diff options
| author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-29 14:19:21 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-29 14:19:21 -0700 |
| commit | 602cada851b28c5792339786efe872fbdc1f5d41 (patch) | |
| tree | 233d474b74d6038b5bb54a07ad91dd1bb10b0218 | |
| parent | 82991c6f2c361acc17279b8124d9bf1878973435 (diff) | |
| parent | fee68d1cc0d9bd863e51c16cdcd707737b16bb38 (diff) | |
| download | linux-3.10-602cada851b28c5792339786efe872fbdc1f5d41.tar.gz linux-3.10-602cada851b28c5792339786efe872fbdc1f5d41.tar.bz2 linux-3.10-602cada851b28c5792339786efe872fbdc1f5d41.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/devfs-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/devfs-2.6: (22 commits)
[PATCH] devfs: Remove it from the feature_removal.txt file
[PATCH] devfs: Last little devfs cleanups throughout the kernel tree.
[PATCH] devfs: Rename TTY_DRIVER_NO_DEVFS to TTY_DRIVER_DYNAMIC_DEV
[PATCH] devfs: Remove the tty_driver devfs_name field as it's no longer needed
[PATCH] devfs: Remove the line_driver devfs_name field as it's no longer needed
[PATCH] devfs: Remove the videodevice devfs_name field as it's no longer needed
[PATCH] devfs: Remove the gendisk devfs_name field as it's no longer needed
[PATCH] devfs: Remove the miscdevice devfs_name field as it's no longer needed
[PATCH] devfs: Remove the devfs_fs_kernel.h file from the tree
[PATCH] devfs: Remove devfs_remove() function from the kernel tree
[PATCH] devfs: Remove devfs_mk_cdev() function from the kernel tree
[PATCH] devfs: Remove devfs_mk_bdev() function from the kernel tree
[PATCH] devfs: Remove devfs_mk_symlink() function from the kernel tree
[PATCH] devfs: Remove devfs_mk_dir() function from the kernel tree
[PATCH] devfs: Remove devfs_*_tape() functions from the kernel tree
[PATCH] devfs: Remove devfs support from the sound subsystem
[PATCH] devfs: Remove devfs support from the ide subsystem.
[PATCH] devfs: Remove devfs support from the serial subsystem
[PATCH] devfs: Remove devfs from the init code
[PATCH] devfs: Remove devfs from the partition code
...
197 files changed, 96 insertions, 8271 deletions
diff --git a/Documentation/Changes b/Documentation/Changes index b02f476c297..488272074c3 100644 --- a/Documentation/Changes +++ b/Documentation/Changes @@ -181,8 +181,8 @@ Intel IA32 microcode -------------------- A driver has been added to allow updating of Intel IA32 microcode, -accessible as both a devfs regular file and as a normal (misc) -character device. If you are not using devfs you may need to: +accessible as a normal (misc) character device. If you are not using +udev you may need to: mkdir /dev/cpu mknod /dev/cpu/microcode c 10 184 @@ -201,7 +201,9 @@ with programs using shared memory. udev ---- udev is a userspace application for populating /dev dynamically with -only entries for devices actually present. udev replaces devfs. +only entries for devices actually present. udev replaces the basic +functionality of devfs, while allowing persistant device naming for +devices. FUSE ---- @@ -231,18 +233,13 @@ The PPP driver has been restructured to support multilink and to enable it to operate over diverse media layers. If you use PPP, upgrade pppd to at least 2.4.0. -If you are not using devfs, you must have the device file /dev/ppp +If you are not using udev, you must have the device file /dev/ppp which can be made by: mknod /dev/ppp c 108 0 as root. -If you use devfsd and build ppp support as modules, you will need -the following in your /etc/devfsd.conf file: - -LOOKUP PPP MODLOAD - Isdn4k-utils ------------ diff --git a/Documentation/DocBook/kernel-api.tmpl b/Documentation/DocBook/kernel-api.tmpl index 3630a0d7695..1ae4dc0fd85 100644 --- a/Documentation/DocBook/kernel-api.tmpl +++ b/Documentation/DocBook/kernel-api.tmpl @@ -348,11 +348,6 @@ X!Earch/i386/kernel/mca.c </sect1> </chapter> - <chapter id="devfs"> - <title>The Device File System</title> -!Efs/devfs/base.c - </chapter> - <chapter id="sysfs"> <title>The Filesystem for Exporting Kernel Objects</title> !Efs/sysfs/file.c diff --git a/Documentation/README.DAC960 b/Documentation/README.DAC960 index 98ea617a0dd..0e8f618ab53 100644 --- a/Documentation/README.DAC960 +++ b/Documentation/README.DAC960 @@ -78,9 +78,9 @@ also known as "System Drives", and Drive Groups are also called "Packs". Both terms are in use in the Mylex documentation; I have chosen to standardize on the more generic "Logical Drive" and "Drive Group". -DAC960 RAID disk devices are named in the style of the Device File System -(DEVFS). The device corresponding to Logical Drive D on Controller C is -referred to as /dev/rd/cCdD, and the partitions are called /dev/rd/cCdDp1 +DAC960 RAID disk devices are named in the style of the obsolete Device File +System (DEVFS). The device corresponding to Logical Drive D on Controller C +is referred to as /dev/rd/cCdD, and the partitions are called /dev/rd/cCdDp1 through /dev/rd/cCdDp7. For example, partition 3 of Logical Drive 5 on Controller 2 is referred to as /dev/rd/c2d5p3. Note that unlike with SCSI disks the device names will not change in the event of a disk drive failure. diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index b1c6c7036c1..1cbbb8e2899 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -6,17 +6,6 @@ be removed from this file. --------------------------- -What: devfs -When: July 2005 -Files: fs/devfs/*, include/linux/devfs_fs*.h and assorted devfs - function calls throughout the kernel tree -Why: It has been unmaintained for a number of years, has unfixable - races, contains a naming policy within the kernel that is - against the LSB, and can be replaced by using udev. -Who: Greg Kroah-Hartman <greg@kroah.com> - ---------------------------- - What: RAW driver (CONFIG_RAW_DRIVER) When: December 2005 Why: declared obsolete since kernel 2.6.3 diff --git a/Documentation/filesystems/devfs/ChangeLog b/Documentation/filesystems/devfs/ChangeLog deleted file mode 100644 index e5aba5246d7..00000000000 --- a/Documentation/filesystems/devfs/ChangeLog +++ /dev/null @@ -1,1977 +0,0 @@ -/* -*- auto-fill -*- */ -=============================================================================== -Changes for patch v1 - -- creation of devfs - -- modified miscellaneous character devices to support devfs -=============================================================================== -Changes for patch v2 - -- bug fix with manual inode creation -=============================================================================== -Changes for patch v3 - -- bugfixes - -- documentation improvements - -- created a couple of scripts (one to save&restore a devfs and the - other to set up compatibility symlinks) - -- devfs support for SCSI discs. New name format is: sd_hHcCiIlL -=============================================================================== -Changes for patch v4 - -- bugfix for the directory reading code - -- bugfix for compilation with kerneld - -- devfs support for generic hard discs - -- rationalisation of the various watchdog drivers -=============================================================================== -Changes for patch v5 - -- support for mounting directly from entries in the devfs (it doesn't - need to be mounted to do this), including the root filesystem. - Mounting of swap partitions also works. Hence, now if you set - CONFIG_DEVFS_ONLY to 'Y' then you won't be able to access your discs - via ordinary device nodes. Naturally, the default is 'N' so that you - can still use your old device nodes. If you want to mount from devfs - entries, make sure you use: append = "root=/dev/sd_..." in your - lilo.conf. It seems LILO looks for the device number (major&minor) - and writes that into the kernel image :-( - -- support for character memory devices (/dev/null, /dev/zero, /dev/full - and so on). Thanks to C. Scott Ananian <cananian@alumni.princeton.edu> -=============================================================================== -Changes for patch v6 - -- support for subdirectories - -- support for symbolic links (created by devfs_mk_symlink(), no - support yet for creation via symlink(2)) - -- SCSI disc naming now cast in stone, with the format: - /dev/sd/c0b1t2u3 controller=0, bus=1, ID=2, LUN=3, whole disc - /dev/sd/c0b1t2u3p4 controller=0, bus=1, ID=2, LUN=3, 4th partition - -- loop devices now appear in devfs - -- tty devices, console, serial ports, etc. now appear in devfs - Thanks to C. Scott Ananian <cananian@alumni.princeton.edu> - -- bugs with mounting devfs-only devices now fixed -=============================================================================== -Changes for patch v7 - -- SCSI CD-ROMS, tapes and generic devices now appear in devfs -=============================================================================== -Changes for patch v8 - -- bugfix with no-rewind SCSI tapes - -- RAMDISCs now appear in devfs - -- better cleaning up of devfs entries created by various modules - -- interface change to <devfs_register> -=============================================================================== -Changes for patch v9 - -- the v8 patch was corrupted somehow, which would affect the patch for - linux/fs/filesystems.c - I've also fixed the v8 patch file on the WWW - -- MetaDevices (/dev/md*) should now appear in devfs -=============================================================================== -Changes for patch v10 - -- bugfix in meta device support for devfs - -- created this ChangeLog file - -- added devfs support to the floppy driver - -- added support for creating sockets in a devfs -=============================================================================== -Changes for patch v11 - -- added DEVFS_FL_HIDE_UNREG flag - -- incorporated better patch for ttyname() in libc 5.4.43 from H.J. Lu. - -- interface change to <devfs_mk_symlink> - -- support for creating symlinks with symlink(2) - -- parallel port printer (/dev/lp*) now appears in devfs -=============================================================================== -Changes for patch v12 - -- added inode check to <devfs_fill_file> function - -- improved devfs support when mounting from devfs - -- added call to <<release>> operation when removing swap areas on - devfs devices - -- increased NR_SUPER to 128 to support large numbers of devfs mounts - (for chroot(2) gaols) - -- fixed bug in SCSI disc support: was generating incorrect minors if - SCSI ID's did not start at 0 and increase by 1 - -- support symlink traversal when mounting root -=============================================================================== -Changes for patch v13 - -- added devfs support to soundcard driver - Thanks to Eric Dumas <dumas@linux.eu.org> and - C. Scott Ananian <cananian@alumni.princeton.edu> - -- added devfs support to the joystick driver - -- loop driver now has it's own subdirectory "/dev/loop/" - -- created <devfs_get_flags> and <devfs_set_flags> functions - -- fix problem with SCSI disc compatibility names (sd{a,b,c,d,e,f}) - which assumes ID's start at 0 and increase by 1. Also only create - devfs entries for SCSI disc partitions which actually exist - Show new names in partition check - Thanks to Jakub Jelinek <jj@sunsite.ms.mff.cuni.cz> -=============================================================================== -Changes for patch v14 - -- bug fix in floppy driver: would not compile without - CONFIG_DEVFS_FS='Y' - Thanks to Jurgen Botz <jbotz@nova.botz.org> - -- bug fix in loop driver - Thanks to C. Scott Ananian <cananian@alumni.princeton.edu> - -- do not create devfs entries for printers not configured - Thanks to C. Scott Ananian <cananian@alumni.princeton.edu> - -- do not create devfs entries for serial ports not present - Thanks to C. Scott Ananian <cananian@alumni.princeton.edu> - -- ensure <tty_register_devfs> is exported from tty_io.c - Thanks to C. Scott Ananian <cananian@alumni.princeton.edu> - -- allow unregistering of devfs symlink entries - -- fixed bug in SCSI disc naming introduced in last patch version -=============================================================================== -Changes for patch v15 - -- ported to kernel 2.1.81 -=============================================================================== -Changes for patch v16 - -- created <devfs_set_symlink_destination> function - -- moved DEVFS_SUPER_MAGIC into header file - -- added DEVFS_FL_HIDE flag - -- created <devfs_get_maj_min> - -- created <devfs_get_handle_from_inode> - -- fixed bugs in searching by major&minor - -- changed interface to <devfs_unregister>, <devfs_fill_file> and - <devfs_find_handle> - -- fixed inode times when symlink created with symlink(2) - -- change tty driver to do auto-creation of devfs entries - Thanks to C. Scott Ananian <cananian@alumni.princeton.edu> - -- fixed bug in genhd.c: whole disc (non-SCSI) was not registered to - devfs - -- updated libc 5.4.43 patch for ttyname() -=============================================================================== -Changes for patch v17 - -- added CONFIG_DEVFS_TTY_COMPAT - Thanks to C. Scott Ananian <cananian@alumni.princeton.edu> - -- bugfix in devfs support for drivers/char/lp.c - Thanks to C. Scott Ananian <cananian@alumni.princeton.edu> - -- clean up serial driver so that PCMCIA devices unregister correctly - Thanks to C. Scott Ananian <cananian@alumni.princeton.edu> - -- fixed bug in genhd.c: whole disc (non-SCSI) was not registered to - devfs [was missing in patch v16] - -- updated libc 5.4.43 patch for ttyname() [was missing in patch v16] - -- all SCSI devices now registered in /dev/sg - -- support removal of devfs entries via unlink(2) -=============================================================================== -Changes for patch v18 - -- added floppy/?u720 floppy entry - -- fixed kerneld support for entries in devfs subdirectories - -- incorporated latest patch for ttyname() in libc 5.4.43 from H.J. Lu. -=============================================================================== -Changes for patch v19 - -- bug fix when looking up unregistered entries: kerneld was not called - -- fixes for kernel 2.1.86 (now requires 2.1.86) -=============================================================================== -Changes for patch v20 - -- only create available floppy entries - Thanks to Andrzej Krzysztofowicz <ankry@green.mif.pg.gda.pl> - -- new IDE naming scheme following SCSI format (i.e. /dev/id/c0b0t0u0p1 - instead of /dev/hda1) - Thanks to Andrzej Krzysztofowicz <ankry@green.mif.pg.gda.pl> - -- new XT disc naming scheme following SCSI format (i.e. /dev/xd/c0t0p1 - instead of /dev/xda1) - Thanks to Andrzej Krzysztofowicz <ankry@green.mif.pg.gda.pl> - -- new non-standard CD-ROM names (i.e. /dev/sbp/c#t#) - Thanks to Andrzej Krzysztofowicz <ankry@green.mif.pg.gda.pl> - -- allow symlink traversal when mounting the root filesystem - -- Create entries for MD devices at MD init - Thanks to Christophe Leroy <christophe.leroy5@capway.com> -=============================================================================== -Changes for patch v21 - -- ported to kernel 2.1.91 -=============================================================================== -Changes for patch v22 - -- SCSI host number patch ("scsihosts=" kernel option) - Thanks to Andrzej Krzysztofowicz <ankry@green.mif.pg.gda.pl> -=============================================================================== -Changes for patch v23 - -- Fixed persistence bug with device numbers for manually created - device files - -- Fixed problem with recreating symlinks with different content - -- Added CONFIG_DEVFS_MOUNT (mount devfs on /dev at boot time) -=============================================================================== -Changes for patch v24 - -- Switched from CONFIG_KERNELD to CONFIG_KMOD: module autoloading - should now work again - -- Hide entries which are manually unlinked - -- Always invalidate devfs dentry cache when registering entries - -- Support removal of devfs directories via rmdir(2) - -- Ensure directories created by <devfs_mk_dir> are visible - -- Default no access for "other" for floppy device -=============================================================================== -Changes for patch v25 - -- Updates to CREDITS file and minor IDE numbering change - Thanks to Andrzej Krzysztofowicz <ankry@green.mif.pg.gda.pl> - -- Invalidate devfs dentry cache when making directories - -- Invalidate devfs dentry cache when removing entries - -- More informative message if root FS mount fails when devfs - configured - -- Fixed persistence bug with fifos -=============================================================================== -Changes for patch v26 - -- ported to kernel 2.1.97 - -- Changed serial directory from "/dev/serial" to "/dev/tts" and - "/dev/consoles" to "/dev/vc" to be more friendly to new procps -=============================================================================== -Changes for patch v27 - -- Added support for IDE4 and IDE5 - Thanks to Andrzej Krzysztofowicz <ankry@green.mif.pg.gda.pl> - -- Documented "scsihosts=" boot parameter - -- Print process command when debugging kerneld/kmod - -- Added debugging for register/unregister/change operations - -- Added "devfs=" boot options - -- Hide unregistered entries by default -=============================================================================== -Changes for patch v28 - -- No longer lock/unlock superblock in <devfs_put_super> (cope with - recent VFS interface change) - -- Do not automatically change ownership/protection of /dev/tty - -- Drop negative dentries when they are released - -- Manage dcache more efficiently -=============================================================================== -Changes for patch v29 - -- Added DEVFS_FL_AUTO_DEVNUM flag -=============================================================================== -Changes for patch v30 - -- No longer set unnecessary methods - -- Ported to kernel 2.1.99-pre3 -=============================================================================== -Changes for patch v31 - -- Added PID display to <call_kerneld> debugging message - -- Added "diread" and "diwrite" options - -- Ported to kernel 2.1.102 - -- Fixed persistence problem with permissions -=============================================================================== -Changes for patch v32 - -- Fixed devfs support in drivers/block/md.c -=============================================================================== -Changes for patch v33 - -- Support legacy device nodes - -- Fixed bug where recreated inodes were hidden - -- New IDE naming scheme: everything is under /dev/ide -=============================================================================== -Changes for patch v34 - -- Improved debugging in <get_vfs_inode> - -- Prevent duplicate calls to <devfs_mk_dir> in SCSI layer - -- No longer free old dentries in <devfs_mk_dir> - -- Free all dentries for a given entry when deleting inodes -=============================================================================== -Changes for patch v35 - -- Ported to kernel 2.1.105 (sound driver changes) -=============================================================================== -Changes for patch v36 - -- Fixed sound driver port -=============================================================================== -Changes for patch v37 - -- Minor documentation tweaks -=============================================================================== -Changes for patch v38 - -- More documentation tweaks - -- Fix for sound driver port - -- Removed ttyname-patch (grab libc 5.4.44 instead) - -- Ported to kernel 2.1.107-pre2 (loop driver fix) -=============================================================================== -Changes for patch v39 - -- Ported to kernel 2.1.107 (hd.c hunk broke due to spelling "fixes"). Sigh - -- Removed many #ifdef's, replaced with trickery in include/devfs_fs.h -=============================================================================== -Changes for patch v40 - -- Fix for sound driver port - -- Limit auto-device numbering to majors 128 to 239 -=============================================================================== -Changes for patch v41 - -- Fixed inode times persistence problem -=============================================================================== -Changes for patch v42 - -- Ported to kernel 2.1.108 (drivers/scsi/hosts.c hunk broke) -=============================================================================== -Changes for patch v43 - -- Fixed spelling in <devfs_readlink> debug - -- Fixed bug in <devfs_setup> parsing "dilookup" - -- More #ifdef's removed - -- Supported Sparc keyboard (/dev/kbd) - -- Supported DSP56001 digital signal processor (/dev/dsp56k) - -- Supported Apple Desktop Bus (/dev/adb) - -- Supported Coda network file system (/dev/cfs*) -=============================================================================== -Changes for patch v44 - -- Fixed devfs inode leak when manually recreating inodes - -- Fixed permission persistence problem when recreating inodes -=============================================================================== -Changes for patch v45 - -- Ported to kernel 2.1.110 -=============================================================================== -Changes for patch v46 - -- Ported to kernel 2.1.112-pre1 - -- Removed harmless "unused variable" compiler warning - -- Fixed modes for manually recreated device nodes -=============================================================================== -Changes for patch v47 - -- Added NULL devfs inode warning in <devfs_read_inode> - -- Force all inode nlink values to 1 -=============================================================================== -Changes for patch v48 - -- Added "dimknod" option - -- Set inode nlink to 0 when freeing dentries - -- Added support for virtual console capture devices (/dev/vcs*) - Thanks to Dennis Hou <smilax@mindmeld.yi.org> - -- Fixed modes for manually recreated symlinks -=============================================================================== -Changes for patch v49 - -- Ported to kernel 2.1.113 -=============================================================================== -Changes for patch v50 - -- Fixed bugs in recreated directories and symlinks -=============================================================================== -Changes for patch v51 - -- Improved robustness of rc.devfs script - Thanks to Roderich Schupp <rsch@experteam.de> - -- Fixed bugs in recreated device nodes - -- Fixed bug in currently unused <devfs_get_handle_from_inode> - -- Defined new <devfs_handle_t> type - -- Improved debugging when getting entries - -- Fixed bug where directories could be emptied - -- Ported to kernel 2.1.115 -=============================================================================== -Changes for patch v52 - -- Replaced dummy .epoch inode with .devfsd character device - -- Modified rc.devfs to take account of above change - -- Removed spurious driver warning messages when CONFIG_DEVFS_FS=n - -- Implemented devfsd protocol revision 0 -=============================================================================== -Changes for patch v53 - -- Ported to kernel 2.1.116 (kmod change broke hunk) - -- Updated Documentation/Configure.help - -- Test and tty pattern patch for rc.devfs script - Thanks to Roderich Schupp <rsch@experteam.de> - -- Added soothing message to warning in <devfs_d_iput> -=============================================================================== -Changes for patch v54 - -- Ported to kernel 2.1.117 - -- Fixed default permissions in sound driver - -- Added support for frame buffer devices (/dev/fb*) -=============================================================================== -Changes for patch v55 - -- Ported to kernel 2.1.119 - -- Use GCC extensions for structure initialisations - -- Implemented async open notification - -- Incremented devfsd protocol revision to 1 -=============================================================================== -Changes for patch v56 - -- Ported to kernel 2.1.120-pre3 - -- Moved async open notification to end of <devfs_open> -=============================================================================== -Changes for patch v57 - -- Ported to kernel 2.1.121 - -- Prepended "/dev/" to module load request - -- Renamed <call_kerneld> to <call_kmod> - -- Created sample modules.conf file -=============================================================================== -Changes for patch v58 - -- Fixed typo "AYSNC" -> "ASYNC" -=============================================================================== -Changes for patch v59 - -- Added open flag for files -=============================================================================== -Changes for patch v60 - -- Ported to kernel 2.1.123-pre2 -=============================================================================== -Changes for patch v61 - -- Set i_blocks=0 and i_blksize=1024 in <devfs_read_inode> -=============================================================================== -Changes for patch v62 - -- Ported to kernel 2.1.123 -=============================================================================== -Changes for patch v63 - -- Ported to kernel 2.1.124-pre2 -=============================================================================== -Changes for patch v64 - -- Fixed Unix98 pty support - -- Increased buffer size in <get_partition_list> to avoid crash and - burn -=============================================================================== -Changes for patch v65 - -- More Unix98 pty support fixes - -- Added test for empty <<name>> in <devfs_find_handle> - -- Renamed <generate_path> to <devfs_generate_path> and published - -- Created /dev/root symlink - Thanks to Roderich Schupp <rsch@ExperTeam.de> - with further modifications by me -=============================================================================== -Changes for patch v66 - -- Yet more Unix98 pty support fixes (now tested) - -- Created <devfs_get_fops> - -- Support media change checks when CONFIG_DEVFS_ONLY=y - -- Abolished Unix98-style PTY names for old PTY devices -=============================================================================== -Changes for patch v67 - -- Added inline declaration for dummy <devfs_generate_path> - -- Removed spurious "unable to register... in devfs" messages when - CONFIG_DEVFS_FS=n - -- Fixed misc. devices when CONFIG_DEVFS_FS=n - -- Limit auto-device numbering to majors 144 to 239 -=============================================================================== -Changes for patch v68 - -- Hide unopened virtual consoles from directory listings - -- Added support for video capture devices - -- Ported to kernel 2.1.125 -=============================================================================== -Changes for patch v69 - -- Fix for CONFIG_VT=n -=============================================================================== -Changes for patch v70 - -- Added support for non-OSS/Free sound cards -=============================================================================== -Changes for patch v71 - -- Ported to kernel 2.1.126-pre2 -=============================================================================== -Changes for patch v72 - -- #ifdef's for CONFIG_DEVFS_DISABLE_OLD_NAMES removed -=============================================================================== -Changes for patch v73 - -- CONFIG_DEVFS_DISABLE_OLD_NAMES replaced with "nocompat" boot option - -- CONFIG_DEVFS_BOOT_OPTIONS removed: boot options always available -=============================================================================== -Changes for patch v74 - -- Removed CONFIG_DEVFS_MOUNT and "mount" boot option and replaced with - "nomount" boot option - -- Documentation updates - -- Updated sample modules.conf -=============================================================================== -Changes for patch v75 - -- Updated sample modules.conf - -- Remount devfs after initrd finishes - -- Ported to kernel 2.1.127 - -- Added support for ISDN - Thanks to Christophe Leroy <christophe.leroy5@capway.com> -=============================================================================== -Changes for patch v76 - -- Updated an email address in ChangeLog - -- CONFIG_DEVFS_ONLY replaced with "only" boot option -=============================================================================== -Changes for patch v77 - -- Added DEVFS_FL_REMOVABLE flag - -- Check for disc change when listing directories with removable media - devices - -- Use DEVFS_FL_REMOVABLE in sd.c - -- Ported to kernel 2.1.128 -=============================================================================== -Changes for patch v78 - -- Only call <scan_dir_for_removable> on first call to <devfs_readdir> - -- Ported to kernel 2.1.129-pre5 - -- ISDN support improvements - Thanks to Christophe Leroy <christophe.leroy5@capway.com> -=============================================================================== -Changes for patch v79 - -- Ported to kernel 2.1.130 - -- Renamed miscdevice "apm" to "apm_bios" to be consistent with - devices.txt -=============================================================================== -Changes for patch v80 - -- Ported to kernel 2.1.131 - -- Updated <devfs_rmdir> for VFS change in 2.1.131 -=============================================================================== -Changes for patch v81 - -- Fixed permissions on /dev/ptmx -=============================================================================== -Changes for patch v82 - -- Ported to kernel 2.1.132-pre4 - -- Changed initial permissions on /dev/pts/* - -- Created <devfs_mk_compat> - -- Added "symlinks" boot option - -- Changed devfs_register_blkdev() back to register_blkdev() for IDE - -- Check for partitions on removable media in <devfs_lookup> -=============================================================================== -Changes for patch v83 - -- Fixed support for ramdisc when using string-based root FS name - -- Ported to kernel 2.2.0-pre1 -=============================================================================== -Changes for patch v84 - -- Ported to kernel 2.2.0-pre7 -=============================================================================== -Changes for patch v85 - -- Compile fixes for driver/sound/sound_common.c (non-module) and - drivers/isdn/isdn_common.c - Thanks to Christophe Leroy <christophe.leroy5@capway.com> - -- Added support for registering regular files - -- Created <devfs_set_file_size> - -- Added /dev/cpu/mtrr as an alternative interface to /proc/mtrr - -- Update devfs inodes from entries if not changed through FS -=============================================================================== -Changes for patch v86 - -- Ported to kernel 2.2.0-pre9 -=============================================================================== -Changes for patch v87 - -- Fixed bug when mounting non-devfs devices in a devfs -=============================================================================== -Changes for patch v88 - -- Fixed <devfs_fill_file> to only initialise temporary inodes - -- Trap for NULL fops in <devfs_register> - -- Return -ENODEV in <devfs_fill_file> for non-driver inodes - -- Fixed bug when unswapping non-devfs devices in a devfs -=============================================================================== -Changes for patch v89 - -- Switched to C data types in include/linux/devfs_fs.h - -- Switched from PATH_MAX to DEVFS_PATHLEN - -- Updated Documentation/filesystems/devfs/modules.conf to take account - of reverse scanning (!) by modprobe - -- Ported to kernel 2.2.0 -=============================================================================== -Changes for patch v90 - -- CONFIG_DEVFS_DISABLE_OLD_TTY_NAMES replaced with "nottycompat" boot - option - -- CONFIG_DEVFS_TTY_COMPAT removed: existing "symlinks" boot option now - controls this. This means you must have libc 5.4.44 or later, or a - recent version of libc 6 if you use the "symlinks" option -=============================================================================== -Changes for patch v91 - -- Switch from <devfs_mk_symlink> to <devfs_mk_compat> in - drivers/char/vc_screen.c to fix problems with Midnight Commander -=============================================================================== -Changes for patch v92 - -- Ported to kernel 2.2.2-pre5 -=============================================================================== -Changes for patch v93 - -- Modified <sd_name> in drivers/scsi/sd.c to cope with devices that - don't exist (which happens with new RAID autostart code printk()s) -=============================================================================== -Changes for patch v94 - -- Fixed bug in joystick driver: only first joystick was registered -=============================================================================== -Changes for patch v95 - -- Fixed another bug in joystick driver - -- Fixed <devfsd_read> to not overrun event buffer -=============================================================================== -Changes for patch v96 - -- Ported to kernel 2.2.5-2 - -- Created <devfs_auto_unregister> - -- Fixed bugs: compatibility entries were not unregistered for: - loop driver - floppy driver - RAMDISC driver - IDE tape driver - SCSI CD-ROM driver - SCSI HDD driver -=============================================================================== -Changes for patch v97 - -- Fixed bugs: compatibility entries were not unregistered for: - ALSA sound driver - partitions in generic disc driver - -- Don't return unregistred entries in <devfs_find_handle> - -- Panic in <devfs_unregister> if entry unregistered - -- Don't panic in <devfs_auto_unregister> for duplicates -=============================================================================== -Changes for patch v98 - -- Don't unregister already unregistered entries in <unregister> - -- Register entry in <sd_detect> - -- Unregister entry in <sd_detach> - -- Changed to <devfs_*register_chrdev> in drivers/char/tty_io.c - -- Ported to kernel 2.2.7 -=============================================================================== -Changes for patch v99 - -- Ported to kernel 2.2.8 - -- Fixed bug in drivers/scsi/sd.c when >16 SCSI discs - -- Disable warning messages when unable to read partition table for - removable media -=============================================================================== -Changes for patch v100 - -- Ported to kernel 2.3.1-pre5 - -- Added "oops-on-panic" boot option - -- Improved debugging in <devfs_register> and <devfs_unregister> - -- Register entry in <sr_detect> - -- Unregister entry in <sr_detach> - -- Register entry in <sg_detect> - -- Unregister entry in <sg_detach> - -- Added support for ALSA drivers -=============================================================================== -Changes for patch v101 - -- Ported to kernel 2.3.2 -=============================================================================== -Changes for patch v102 - -- Update serial driver to register PCMCIA entries - Thanks to Roch-Alexandre Nomine-Beguin <roch@samarkand.infini.fr> - -- Updated an email address in ChangeLog - -- Hide virtual console capture entries from directory listings when - corresponding console device is not open -=============================================================================== -Changes for patch v103 - -- Ported to kernel 2.3.3 -=============================================================================== -Changes for patch v104 - -- Added documentation for some functions - -- Added "doc" target to fs/devfs/Makefile - -- Added "v4l" directory for video4linux devices - -- Replaced call to <devfs_unregister> in <sd_detach> with call to - <devfs_register_partitions> - -- Moved registration for sr and sg drivers from detect() to attach() - methods - -- Register entries in <st_attach> and unregister in <st_detach> - -- Work around IDE driver treating CD-ROM as gendisk - -- Use <sed> instead of <tr> in rc.devfs - -- Updated ToDo list - -- Removed "oops-on-panic" boot option: now always Oops -=============================================================================== -Changes for patch v105 - -- Unregister SCSI host from <scsi_host_no_list> in <scsi_unregister> - Thanks to Zoltán Böszörményi <zboszor@mail.externet.hu> - -- Don't save /dev/log in rc.devfs - -- Ported to kernel 2.3.4-pre1 -=============================================================================== -Changes for patch v106 - -- Fixed silly typo in drivers/scsi/st.c - -- Improved debugging in <devfs_register> -=============================================================================== -Changes for patch v107 - -- Added "diunlink" and "nokmod" boot options - -- Removed superfluous warning message in <devfs_d_iput> -=============================================================================== -Changes for patch v108 - -- Remove entries when unloading sound module -=============================================================================== -Changes for patch v109 - -- Ported to kernel 2.3.6-pre2 -=============================================================================== -Changes for patch v110 - -- Took account of change to <d_alloc_root> -=============================================================================== -Changes for patch v111 - -- Created separate event queue for each mounted devfs - -- Removed <devfs_invalidate_dcache> - -- Created new ioctl()s for devfsd - -- Incremented devfsd protocol revision to 3 - -- Fixed bug when re-creating directories: contents were lost - -- Block access to inodes until devfsd updates permissions -=============================================================================== -Changes for patch v112 - -- Modified patch so it applies against 2.3.5 and 2.3.6 - -- Updated an email address in ChangeLog - -- Do not automatically change ownership/protection of /dev/tty<n> - -- Updated sample modules.conf - -- Switched to sending process uid/gid to devfsd - -- Renamed <call_kmod> to <try_modload> - -- Added DEVFSD_NOTIFY_LOOKUP event - -- Added DEVFSD_NOTIFY_CHANGE event - -- Added DEVFSD_NOTIFY_CREATE event - -- Incremented devfsd protocol revision to 4 - -- Moved kernel-specific stuff to include/linux/devfs_fs_kernel.h -=============================================================================== -Changes for patch v113 - -- Ported to kernel 2.3.9 - -- Restricted permissions on some block devices -=============================================================================== -Changes for patch v114 - -- Added support for /dev/netlink - Thanks to Dennis Hou <smilax@mindmeld.yi.org> - -- Return EISDIR rather than EINVAL for read(2) on directories - -- Ported to kernel 2.3.10 -=============================================================================== -Changes for patch v115 - -- Added support for all remaining character devices - Thanks to Dennis Hou <smilax@mindmeld.yi.org> - -- Cleaned up netlink support -=============================================================================== -Changes for patch v116 - -- Added support for /dev/parport%d - Thanks to Tim Waugh <tim@cyberelk.demon.co.uk> - -- Fixed parallel port ATAPI tape driver - -- Fixed Atari SLM laser printer driver -=============================================================================== -Changes for patch v117 - -- Added support for COSA card - Thanks to Dennis Hou <smilax@mindmeld.yi.org> - -- Fixed drivers/char/ppdev.c: missing #include <linux/init.h> - -- Fixed drivers/char/ftape/zftape/zftape-init.c - Thanks to Vladimir Popov <mashgrad@usa.net> -=============================================================================== -Changes for patch v118 - -- Ported to kernel 2.3.15-pre3 - -- Fixed bug in loop driver - -- Unregister /dev/lp%d entries in drivers/char/lp.c - Thanks to Maciej W. Rozycki <macro@ds2.pg.gda.pl> -=============================================================================== -Changes for patch v119 - -- Ported to kernel 2.3.16 -=============================================================================== -Changes for patch v120 - -- Fixed bug in drivers/scsi/scsi.c - -- Added /dev/ppp - Thanks to Dennis Hou <smilax@mindmeld.yi.org> - -- Ported to kernel 2.3.17 -=============================================================================== -Changes for patch v121 - -- Fixed bug in drivers/block/loop.c - -- Ported to kernel 2.3.18 -=============================================================================== -Changes for patch v122 - -- Ported to kernel 2.3.19 -=============================================================================== -Changes for patch v123 - -- Ported to kernel 2.3.20 -=============================================================================== -Changes for patch v124 - -- Ported to kernel 2.3.21 -=============================================================================== -Changes for patch v125 - -- Created <devfs_get_info>, <devfs_set_info>, - <devfs_get_first_child> and <devfs_get_next_sibling> - Added <<dir>> parameter to <devfs_register>, <devfs_mk_compat>, - <devfs_mk_dir> and <devfs_find_handle> - Work sponsored by SGI - -- Fixed apparent bug in COSA driver - -- Re-instated "scsihosts=" boot option -=============================================================================== -Changes for patch v126 - -- Always create /dev/pts if CONFIG_UNIX98_PTYS=y - -- Fixed call to <devfs_mk_dir> in drivers/block/ide-disk.c - Thanks to Dennis Hou <smilax@mindmeld.yi.org> - -- Allow multiple unregistrations - -- Created /dev/scsi hierarchy - Work sponsored by SGI -=============================================================================== -Changes for patch v127 - -Work sponsored by SGI - -- No longer disable devpts if devfs enabled (caveat emptor) - -- Added flags array to struct gendisk and removed code from - drivers/scsi/sd.c - -- Created /dev/discs hierarchy -=============================================================================== -Changes for patch v128 - -Work sponsored by SGI - -- Created /dev/cdroms hierarchy -=============================================================================== -Changes for patch v129 - -Work sponsored by SGI - -- Removed compatibility entries for sound devices - -- Removed compatibility entries for printer devices - -- Removed compatibility entries for video4linux devices - -- Removed compatibility entries for parallel port devices - -- Removed compatibility entries for frame buffer devices -=============================================================================== -Changes for patch v130 - -Work sponsored by SGI - -- Added major and minor number to devfsd protocol - -- Incremented devfsd protocol revision to 5 - -- Removed compatibility entries for SoundBlaster CD-ROMs - -- Removed compatibility entries for netlink devices - -- Removed compatibility entries for SCSI generic devices - -- Removed compatibility entries for SCSI tape devices -=============================================================================== -Changes for patch v131 - -Work sponsored by SGI - -- Support info pointer for all devfs entry types - -- Added <<info>> parameter to <devfs_mk_dir> and <devfs_mk_symlink> - -- Removed /dev/st hierarchy - -- Removed /dev/sg hierarchy - -- Removed compatibility entries for loop devices - -- Removed compatibility entries for IDE tape devices - -- Removed compatibility entries for SCSI CD-ROMs - -- Removed /dev/sr hierarchy -=============================================================================== -Changes for patch v132 - -Work sponsored by SGI - -- Removed compatibility entries for floppy devices - -- Removed compatibility entries for RAMDISCs - -- Removed compatibility entries for meta-devices - -- Removed compatibility entries for SCSI discs - -- Created <devfs_make_root> - -- Removed /dev/sd hierarchy - -- Support "../" when searching devfs namespace - -- Created /dev/ide/host* hierarchy - -- Supported IDE hard discs in /dev/ide/host* hierarchy - -- Removed compatibility entries for IDE discs - -- Removed /dev/ide/hd hierarchy - -- Supported IDE CD-ROMs in /dev/ide/host* hierarchy - -- Removed compatibility entries for IDE CD-ROMs - -- Removed /dev/ide/cd hierarchy -=============================================================================== -Changes for patch v133 - -Work sponsored by SGI - -- Created <devfs_get_unregister_slave> - -- Fixed bug in fs/partitions/check.c when rescanning -=============================================================================== -Changes for patch v134 - -Work sponsored by SGI - -- Removed /dev/sd, /dev/sr, /dev/st and /dev/sg directories - -- Removed /dev/ide/hd directory - -- Exported <devfs_get_parent> - -- Created <devfs_register_tape> and /dev/tapes hierarchy - -- Removed /dev/ide/mt hierarchy - -- Removed /dev/ide/fd hierarchy - -- Ported to kernel 2.3.25 -=============================================================================== -Changes for patch v135 - -Work sponsored by SGI - -- Removed compatibility entries for virtual console capture devices - -- Removed unused <devfs_set_symlink_destination> - -- Removed compatibility entries for serial devices - -- Removed compatibility entries for console devices - -- Do not hide entries from devfsd or children - -- Removed DEVFS_FL_TTY_COMPAT flag - -- Removed "nottycompat" boot option - -- Removed <devfs_mk_compat> -=============================================================================== -Changes for patch v136 - -Work sponsored by SGI - -- Moved BSD pty devices to /dev/pty - -- Added DEVFS_FL_WAIT flag -=============================================================================== -Changes for patch v137 - -Work sponsored by SGI - -- Really fixed bug in fs/partitions/check.c when rescanning - -- Support new "disc" naming scheme in <get_removable_partition> - -- Allow NULL fops in <devfs_register> - -- Removed redundant name functions in SCSI disc and IDE drivers -=============================================================================== -Changes for patch v138 - -Work sponsored by SGI - -- Fixed old bugs in drivers/block/paride/pt.c, drivers/char/tpqic02.c, - drivers/net/wan/cosa.c and drivers/scsi/scsi.c - Thanks to Sergey Kubushin <ksi@ksi-linux.com> - -- Fall back to major table if NULL fops given to <devfs_register> -=============================================================================== -Changes for patch v139 - -Work sponsored by SGI - -- Corrected and moved <get_blkfops> and <get_chrfops> declarations - from arch/alpha/kernel/osf_sys.c to include/linux/fs.h - -- Removed name function from struct gendisk - -- Updated devfs FAQ -=============================================================================== -Changes for patch v140 - -Work sponsored by SGI - -- Ported to kernel 2.3.27 -=============================================================================== -Changes for patch v141 - -Work sponsored by SGI - -- Bug fix in arch/m68k/atari/joystick.c - -- Moved ISDN and capi devices to /dev/isdn -=============================================================================== -Changes for patch v142 - -Work sponsored by SGI - -- Bug fix in drivers/block/ide-probe.c (patch confusion) -=============================================================================== -Changes for patch v143 - -Work sponsored by SGI - -- Bug fix in drivers/block/blkpg.c:partition_name() -=============================================================================== -Changes for patch v144 - -Work sponsored by SGI - -- Ported to kernel 2.3.29 - -- Removed calls to <devfs_register> from cdu31a, cm206, mcd and mcdx - CD-ROM drivers: generic driver handles this now - -- Moved joystick devices to /dev/joysticks -=============================================================================== -Changes for patch v145 - -Work sponsored by SGI - -- Ported to kernel 2.3.30-pre3 - -- Register whole-disc entry even for invalid partition tables - -- Fixed bug in mounting root FS when initrd enabled - -- Fixed device entry leak with IDE CD-ROMs - -- Fixed compile problem with drivers/isdn/isdn_common.c - -- Moved COSA devices to /dev/cosa - -- Support fifos when unregistering - -- Created <devfs_register_series> and used in many drivers - -- Moved Coda devices to /dev/coda - -- Moved parallel port IDE tapes to /dev/pt - -- Moved parallel port IDE generic devices to /dev/pg -=============================================================================== -Changes for patch v146 - -Work sponsored by SGI - -- Removed obsolete DEVFS_FL_COMPAT and DEVFS_FL_TOLERANT flags - -- Fixed compile problem with fs/coda/psdev.c - -- Reinstate change to <devfs_register_blkdev> in - drivers/block/ide-probe.c now that fs/isofs/inode.c is fixed - -- Switched to <devfs_register_blkdev> in drivers/block/floppy.c, - drivers/scsi/sr.c and drivers/block/md.c - -- Moved DAC960 devices to /dev/dac960 -=============================================================================== -Changes for patch v147 - -Work sponsored by SGI - -- Ported to kernel 2.3.32-pre4 -=============================================================================== -Changes for patch v148 - -Work sponsored by SGI - -- Removed kmod support: use devfsd instead - -- Moved miscellaneous character devices to /dev/misc -=============================================================================== -Changes for patch v149 - -Work sponsored by SGI - -- Ensure include/linux/joystick.h is OK for user-space - -- Improved debugging in <get_vfs_inode> - -- Ensure dentries created by devfsd will be cleaned up -=============================================================================== -Changes for patch v150 - -Work sponsored by SGI - -- Ported to kernel 2.3.34 -=============================================================================== -Changes for patch v151 - -Work sponsored by SGI - -- Ported to kernel 2.3.35-pre1 - -- Created <devfs_get_name> -=============================================================================== -Changes for patch v152 - -Work sponsored by SGI - -- Updated sample modules.conf - -- Ported to kernel 2.3.36-pre1 -=============================================================================== -Changes for patch v153 - -Work sponsored by SGI - -- Ported to kernel 2.3.42 - -- Removed <devfs_fill_file> -=============================================================================== -Changes for patch v154 - -Work sponsored by SGI - -- Took account of device number changes for /dev/fb* -=============================================================================== -Changes for patch v155 - -Work sponsored by SGI - -- Ported to kernel 2.3.43-pre8 - -- Moved /dev/tty0 to /dev/vc/0 - -- Moved sequence number formatting from <_tty_make_name> to drivers -=============================================================================== -Changes for patch v156 - -Work sponsored by SGI - -- Fixed breakage in drivers/scsi/sd.c due to recent SCSI changes -=============================================================================== -Changes for patch v157 - -Work sponsored by SGI - -- Ported to kernel 2.3.45 -=============================================================================== -Changes for patch v158 - -Work sponsored by SGI - -- Ported to kernel 2.3.46-pre2 -=============================================================================== -Changes for patch v159 - -Work sponsored by SGI - -- Fixed drivers/block/md.c - Thanks to Mike Galbraith <mikeg@weiden.de> - -- Documentation fixes - -- Moved device registration from <lp_init> to <lp_register> - Thanks to Tim Waugh <twaugh@redhat.com> -=============================================================================== -Changes for patch v160 - -Work sponsored by SGI - -- Fixed drivers/char/joystick/joystick.c - Thanks to Vojtech Pavlik <vojtech@suse.cz> - -- Documentation updates - -- Fixed arch/i386/kernel/mtrr.c if procfs and devfs not enabled - -- Fixed drivers/char/stallion.c -=============================================================================== -Changes for patch v161 - -Work sponsored by SGI - -- Remove /dev/ide when ide-mod is unloaded - -- Fixed bug in drivers/block/ide-probe.c when secondary but no primary - -- Added DEVFS_FL_NO_PERSISTENCE flag - -- Used new DEVFS_FL_NO_PERSISTENCE flag for Unix98 pty slaves - -- Removed unnecessary call to <update_devfs_inode_from_entry> in - <devfs_readdir> - -- Only set auto-ownership for /dev/pty/s* -=============================================================================== -Changes for patch v162 - -Work sponsored by SGI - -- Set inode->i_size to correct size for symlinks - Thanks to Jeremy Fitzhardinge <jeremy@goop.org> - -- Only give lookup() method to directories to comply with new VFS - assumptions - -- Remove unnecessary tests in symlink methods - -- Don't kill existing block ops in <devfs_read_inode> - -- Restore auto-ownership for /dev/pty/m* -=============================================================================== -Changes for patch v163 - -Work sponsored by SGI - -- Don't create missing directories in <devfs_find_handle> - -- Removed Documentation/filesystems/devfs/mk-devlinks - -- Updated Documentation/filesystems/devfs/README -=============================================================================== -Changes for patch v164 - -Work sponsored by SGI - -- Fixed CONFIG_DEVFS breakage in drivers/char/serial.c introduced in - linux-2.3.99-pre6-7 -=============================================================================== -Changes for patch v165 - -Work sponsored by SGI - -- Ported to kernel 2.3.99-pre6 -=============================================================================== -Changes for patch v166 - -Work sponsored by SGI - -- Added CONFIG_DEVFS_MOUNT -=============================================================================== -Changes for patch v167 - -Work sponsored by SGI - -- Updated Documentation/filesystems/devfs/README - -- Updated sample modules.conf -=============================================================================== -Changes for patch v168 - -Work sponsored by SGI - -- Disabled multi-mount capability (use VFS bindings instead) - -- Updated README from master HTML file -=============================================================================== -Changes for patch v169 - -Work sponsored by SGI - -- Removed multi-mount code - -- Removed compatibility macros: VFS has changed too much -=============================================================================== -Changes for patch v170 - -Work sponsored by SGI - -- Updated README from master HTML file - -- Merged devfs inode into devfs entry -=============================================================================== -Changes for patch v171 - -Work sponsored by SGI - -- Updated sample modules.conf - -- Removed dead code in <devfs_register> which used to call - <free_dentries> - -- Ported to kernel 2.4.0-test2-pre3 -=============================================================================== -Changes for patch v172 - -Work sponsored by SGI - -- Changed interface to <devfs_register> - -- Changed interface to <devfs_register_series> -=============================================================================== -Changes for patch v173 - -Work sponsored by SGI - -- Simplified interface to <devfs_mk_symlink> - -- Simplified interface to <devfs_mk_dir> - -- Simplified interface to <devfs_find_handle> -=============================================================================== -Changes for patch v174 - -Work sponsored by SGI - -- Updated README from master HTML file -=============================================================================== -Changes for patch v175 - -Work sponsored by SGI - -- DocBook update for fs/devfs/base.c - Thanks to Tim Waugh <twaugh@redhat.com> - -- Removed stale fs/tunnel.c (was never used or completed) -=============================================================================== -Changes for patch v176 - -Work sponsored by SGI - -- Updated ToDo list - -- Removed sample modules.conf: now distributed with devfsd - -- Updated README from master HTML file - -- Ported to kernel 2.4.0-test3-pre4 (which had devfs-patch-v174) -=============================================================================== -Changes for patch v177 - -- Updated README from master HTML file - -- Documentation cleanups - -- Ensure <devfs_generate_path> terminates string for root entry - Thanks to Tim Jansen <tim@tjansen.de> - -- Exported <devfs_get_name> to modules - -- Make <devfs_mk_symlink> send events to devfsd - -- Cleaned up option processing in <devfs_setup> - -- Fixed bugs in handling symlinks: could leak or cause Oops - -- Cleaned up directory handling by separating fops - Thanks to Alexander Viro <viro@parcelfarce.linux.theplanet.co.uk> -=============================================================================== -Changes for patch v178 - -- Fixed handling of inverted options in <devfs_setup> -=============================================================================== -Changes for patch v179 - -- Adjusted <try_modload> to account for <devfs_generate_path> fix -=============================================================================== -Changes for patch v180 - -- Fixed !CONFIG_DEVFS_FS stub declaration of <devfs_get_info> -=============================================================================== -Changes for patch v181 - -- Answered question posed by Al Viro and removed his comments from <devfs_open> - -- Moved setting of registered flag after other fields are changed - -- Fixed race between <devfsd_close> and <devfsd_notify_one> - -- Global VFS changes added bogus BKL to devfsd_close(): removed - -- Widened locking in <devfs_readlink> and <devfs_follow_link> - -- Replaced <devfsd_read> stack usage with <devfsd_ioctl> kmalloc - -- Simplified locking in <devfsd_ioctl> and fixed memory leak -=============================================================================== -Changes for patch v182 - -- Created <devfs_*alloc_major> and <devfs_*alloc_devnum> - -- Removed broken devnum allocation and use <devfs_alloc_devnum> - -- Fixed old devnum leak by calling new <devfs_dealloc_devnum> - -- Created <devfs_*alloc_unique_number> - -- Fixed number leak for /dev/cdroms/cdrom%d - -- Fixed number leak for /dev/discs/disc%d -=============================================================================== -Changes for patch v183 - -- Fixed bug in <devfs_setup> which could hang boot process -=============================================================================== -Changes for patch v184 - -- Documentation typo fix for fs/devfs/util.c - -- Fixed drivers/char/stallion.c for devfs - -- Added DEVFSD_NOTIFY_DELETE event - -- Updated README from master HTML file - -- Removed #include <asm/segment.h> from fs/devfs/base.c -=============================================================================== -Changes for patch v185 - -- Made <block_semaphore> and <char_semaphore> in fs/devfs/util.c - private - -- Fixed inode table races by removing it and using inode->u.generic_ip - instead - -- Moved <devfs_read_inode> into <get_vfs_inode> - -- Moved <devfs_write_inode> into <devfs_notify_change> -=============================================================================== -Changes for patch v186 - -- Fixed race in <devfs_do_symlink> for uni-processor - -- Updated README from master HTML file -=============================================================================== -Changes for patch v187 - -- Fixed drivers/char/stallion.c for devfs - -- Fixed drivers/char/rocket.c for devfs - -- Fixed bug in <devfs_alloc_unique_number>: limited to 128 numbers -=============================================================================== -Changes for patch v188 - -- Updated major masks in fs/devfs/util.c up to Linus' "no new majors" - proclamation. Block: were 126 now 122 free, char: were 26 now 19 free - -- Updated README from master HTML file - -- Removed remnant of multi-mount support in <devfs_mknod> - -- Removed unused DEVFS_FL_SHOW_UNREG flag -=============================================================================== -Changes for patch v189 - -- Removed nlink field from struct devfs_inode - -- Removed auto-ownership for /dev/pty/* (BSD ptys) and used - DEVFS_FL_CURRENT_OWNER|DEVFS_FL_NO_PERSISTENCE for /dev/pty/s* (just - like Unix98 pty slaves) and made /dev/pty/m* rw-rw-rw- access -=============================================================================== -Changes for patch v190 - -- Updated README from master HTML file - -- Replaced BKL with global rwsem to protect symlink data (quick and - dirty hack) -=============================================================================== -Changes for patch v191 - -- Replaced global rwsem for symlink with per-link refcount -=============================================================================== -Changes for patch v192 - -- Removed unnecessary #ifdef CONFIG_DEVFS_FS from arch/i386/kernel/mtrr.c - -- Ported to kernel 2.4.10-pre11 - -- Set inode->i_mapping->a_ops for block nodes in <get_vfs_inode> -=============================================================================== -Changes for patch v193 - -- Went back to global rwsem for symlinks (refcount scheme no good) -=============================================================================== -Changes for patch v194 - -- Fixed overrun in <devfs_link> by removing function (not needed) - -- Updated README from master HTML file -=============================================================================== -Changes for patch v195 - -- Fixed buffer underrun in <try_modload> - -- Moved down_read() from <search_for_entry_in_dir> to <find_entry> -=============================================================================== -Changes for patch v196 - -- Fixed race in <devfsd_ioctl> when setting event mask - Thanks to Kari Hurtta <hurtta@leija.mh.fmi.fi> - -- Avoid deadlock in <devfs_follow_link> by using temporary buffer -=============================================================================== -Changes for patch v197 - -- First release of new locking code for devfs core (v1.0) - -- Fixed bug in drivers/cdrom/cdrom.c -=============================================================================== -Changes for patch v198 - -- Discard temporary buffer, now use "%s" for dentry names - -- Don't generate path in <try_modload>: use fake entry instead - -- Use "existing" directory in <_devfs_make_parent_for_leaf> - -- Use slab cache rather than fixed buffer for devfsd events -=============================================================================== -Changes for patch v199 - -- Removed obsolete usage of DEVFS_FL_NO_PERSISTENCE - -- Send DEVFSD_NOTIFY_REGISTERED events in <devfs_mk_dir> - -- Fixed locking bug in <devfs_d_revalidate_wait> due to typo - -- Do not send CREATE, CHANGE, ASYNC_OPEN or DELETE events from devfsd - or children -=============================================================================== -Changes for patch v200 - -- Ported to kernel 2.5.1-pre2 -=============================================================================== -Changes for patch v201 - -- Fixed bug in <devfsd_read>: was dereferencing freed pointer -=============================================================================== -Changes for patch v202 - -- Fixed bug in <devfsd_close>: was dereferencing freed pointer - -- Added process group check for devfsd privileges -=============================================================================== -Changes for patch v203 - -- Use SLAB_ATOMIC in <devfsd_notify_de> from <devfs_d_delete> -=============================================================================== -Changes for patch v204 - -- Removed long obsolete rc.devfs - -- Return old entry in <devfs_mk_dir> for 2.4.x kernels - -- Updated README from master HTML file - -- Increment refcount on module in <check_disc_changed> - -- Created <devfs_get_handle> and exported <devfs_put> - -- Increment refcount on module in <devfs_get_ops> - -- Created <devfs_put_ops> and used where needed to fix races - -- Added clarifying comments in response to preliminary EMC code review - -- Added poisoning to <devfs_put> - -- Improved debugging messages - -- Fixed unregister bugs in drivers/md/lvm-fs.c -=============================================================================== -Changes for patch v205 - -- Corrected (made useful) debugging message in <unregister> - -- Moved <kmem_cache_create> in <mount_devfs_fs> to <init_devfs_fs> - -- Fixed drivers/md/lvm-fs.c to create "lvm" entry - -- Added magic number to guard against scribbling drivers - -- Only return old entry in <devfs_mk_dir> if a directory - -- Defined macros for error and debug messages - -- Updated README from master HTML file -=============================================================================== -Changes for patch v206 - -- Added support for multiple Compaq cpqarray controllers - -- Fixed (rare, old) race in <devfs_lookup> -=============================================================================== -Changes for patch v207 - -- Fixed deadlock bug in <devfs_d_revalidate_wait> - -- Tag VFS deletable in <devfs_mk_symlink> if handle ignored - -- Updated README from master HTML file -=============================================================================== -Changes for patch v208 - -- Added KERN_* to remaining messages - -- Cleaned up declaration of <stat_read> - -- Updated README from master HTML file -=============================================================================== -Changes for patch v209 - -- Updated README from master HTML file - -- Removed silently introduced calls to lock_kernel() and - unlock_kernel() due to recent VFS locking changes. BKL isn't - required in devfs - -- Changed <devfs_rmdir> to allow later additions if not yet empty - -- Added calls to <devfs_register_partitions> in drivers/block/blkpc.c - <add_partition> and <del_partition> - -- Fixed bug in <devfs_alloc_unique_number>: was clearing beyond - bitfield - -- Fixed bitfield data type for <devfs_*alloc_devnum> - -- Made major bitfield type and initialiser 64 bit safe -=============================================================================== -Changes for patch v210 - -- Updated fs/devfs/util.c to fix shift warning on 64 bit machines - Thanks to Anton Blanchard <anton@samba.org> - -- Updated README from master HTML file -=============================================================================== -Changes for patch v211 - -- Do not put miscellaneous character devices in /dev/misc if they - specify their own directory (i.e. contain a '/' character) - -- Copied macro for error messages from fs/devfs/base.c to - fs/devfs/util.c and made use of this macro - -- Removed 2.4.x compatibility code from fs/devfs/base.c -=============================================================================== -Changes for patch v212 - -- Added BKL to <devfs_open> because drivers still need it -=============================================================================== -Changes for patch v213 - -- Protected <scan_dir_for_removable> and <get_removable_partition> - from changing directory contents -=============================================================================== -Changes for patch v214 - -- Switched to ISO C structure field initialisers - -- Switch to set_current_state() and move before add_wait_queue() - -- Updated README from master HTML file - -- Fixed devfs entry leak in <devfs_readdir> when *readdir fails -=============================================================================== -Changes for patch v215 - -- Created <devfs_find_and_unregister> - -- Switched many functions from <devfs_find_handle> to - <devfs_find_and_unregister> - -- Switched many functions from <devfs_find_handle> to <devfs_get_handle> -=============================================================================== -Changes for patch v216 - -- Switched arch/ia64/sn/io/hcl.c from <devfs_find_handle> to - <devfs_get_handle> - -- Removed deprecated <devfs_find_handle> -=============================================================================== -Changes for patch v217 - -- Exported <devfs_find_and_unregister> and <devfs_only> to modules - -- Updated README from master HTML file - -- Fixed module unload race in <devfs_open> -=============================================================================== -Changes for patch v218 - -- Removed DEVFS_FL_AUTO_OWNER flag - -- Switched lingering structure field initialiser to ISO C - -- Added locking when setting/clearing flags - -- Documentation fix in fs/devfs/util.c diff --git a/Documentation/filesystems/devfs/README b/Documentation/filesystems/devfs/README deleted file mode 100644 index aabfba24bc2..00000000000 --- a/Documentation/filesystems/devfs/README +++ /dev/null @@ -1,1959 +0,0 @@ -Devfs (Device File System) FAQ - - -Linux Devfs (Device File System) FAQ -Richard Gooch -20-AUG-2002 - - -Document languages: - - - - - - - ------------------------------------------------------------------------------ - -NOTE: the master copy of this document is available online at: - -http://www.atnf.csiro.au/~rgooch/linux/docs/devfs.html -and looks much better than the text version distributed with the -kernel sources. A mirror site is available at: - -http://www.ras.ucalgary.ca/~rgooch/linux/docs/devfs.html - -There is also an optional daemon that may be used with devfs. You can -find out more about it at: - -http://www.atnf.csiro.au/~rgooch/linux/ - -A mailing list is available which you may subscribe to. Send -email -to majordomo@oss.sgi.com with the following line in the -body of the message: -subscribe devfs -To unsubscribe, send the message body: -unsubscribe devfs -instead. The list is archived at - -http://oss.sgi.com/projects/devfs/archive/. - ------------------------------------------------------------------------------ - -Contents - - -What is it? - -Why do it? - -Who else does it? - -How it works - -Operational issues (essential reading) - -Instructions for the impatient -Permissions persistence across reboots -Dealing with drivers without devfs support -All the way with Devfs -Other Issues -Kernel Naming Scheme -Devfsd Naming Scheme -Old Compatibility Names -SCSI Host Probing Issues - - - -Device drivers currently ported - -Allocation of Device Numbers - -Questions and Answers - -Making things work -Alternatives to devfs -What I don't like about devfs -How to report bugs -Strange kernel messages -Compilation problems with devfsd - - -Other resources - -Translations of this document - - ------------------------------------------------------------------------------ - - -What is it? - -Devfs is an alternative to "real" character and block special devices -on your root filesystem. Kernel device drivers can register devices by -name rather than major and minor numbers. These devices will appear in -devfs automatically, with whatever default ownership and -protection the driver specified. A daemon (devfsd) can be used to -override these defaults. Devfs has been in the kernel since 2.3.46. - -NOTE that devfs is entirely optional. If you prefer the old -disc-based device nodes, then simply leave CONFIG_DEVFS_FS=n (the -default). In this case, nothing will change. ALSO NOTE that if you do -enable devfs, the defaults are such that full compatibility is -maintained with the old devices names. - -There are two aspects to devfs: one is the underlying device -namespace, which is a namespace just like any mounted filesystem. The -other aspect is the filesystem code which provides a view of the -device namespace. The reason I make a distinction is because devfs -can be mounted many times, with each mount showing the same device -namespace. Changes made are global to all mounted devfs filesystems. -Also, because the devfs namespace exists without any devfs mounts, you -can easily mount the root filesystem by referring to an entry in the -devfs namespace. - - -The cost of devfs is a small increase in kernel code size and memory -usage. About 7 pages of code (some of that in __init sections) and 72 -bytes for each entry in the namespace. A modest system has only a -couple of hundred device entries, so this costs a few more -pages. Compare this with the suggestion to put /dev on a <a -href="#why-faq-ramdisc">ramdisc. - -On a typical machine, the cost is under 0.2 percent. On a modest -system with 64 MBytes of RAM, the cost is under 0.1 percent. The -accusations of "bloatware" levelled at devfs are not justified. - ------------------------------------------------------------------------------ - - -Why do it? - -There are several problems that devfs addresses. Some of these -problems are more serious than others (depending on your point of -view), and some can be solved without devfs. However, the totality of -these problems really calls out for devfs. - -The choice is a patchwork of inefficient user space solutions, which -are complex and likely to be fragile, or to use a simple and efficient -devfs which is robust. - -There have been many counter-proposals to devfs, all seeking to -provide some of the benefits without actually implementing devfs. So -far there has been an absence of code and no proposed alternative has -been able to provide all the features that devfs does. Further, -alternative proposals require far more complexity in user-space (and -still deliver less functionality than devfs). Some people have the -mantra of reducing "kernel bloat", but don't consider the effects on -user-space. - -A good solution limits the total complexity of kernel-space and -user-space. - - -Major&minor allocation - -The existing scheme requires the allocation of major and minor device -numbers for each and every device. This means that a central -co-ordinating authority is required to issue these device numbers -(unless you're developing a "private" device driver), in order to -preserve uniqueness. Devfs shifts the burden to a namespace. This may -not seem like a huge benefit, but actually it is. Since driver authors -will naturally choose a device name which reflects the functionality -of the device, there is far less potential for namespace conflict. -Solving this requires a kernel change. - -/dev management - -Because you currently access devices through device nodes, these must -be created by the system administrator. For standard devices you can -usually find a MAKEDEV programme which creates all these (hundreds!) -of nodes. This means that changes in the kernel must be reflected by -changes in the MAKEDEV programme, or else the system administrator -creates device nodes by hand. - -The basic problem is that there are two separate databases of -major and minor numbers. One is in the kernel and one is in /dev (or -in a MAKEDEV programme, if you want to look at it that way). This is -duplication of information, which is not good practice. -Solving this requires a kernel change. - -/dev growth - -A typical /dev has over 1200 nodes! Most of these devices simply don't -exist because the hardware is not available. A huge /dev increases the -time to access devices (I'm just referring to the dentry lookup times -and the time taken to read inodes off disc: the next subsection shows -some more horrors). - -An example of how big /dev can grow is if we consider SCSI devices: - -host 6 bits (say up to 64 hosts on a really big machine) -channel 4 bits (say up to 16 SCSI buses per host) -id 4 bits -lun 3 bits -partition 6 bits -TOTAL 23 bits - - -This requires 8 Mega (1024*1024) inodes if we want to store all -possible device nodes. Even if we scrap everything but id,partition -and assume a single host adapter with a single SCSI bus and only one -logical unit per SCSI target (id), that's still 10 bits or 1024 -inodes. Each VFS inode takes around 256 bytes (kernel 2.1.78), so -that's 256 kBytes of inode storage on disc (assuming real inodes take -a similar amount of space as VFS inodes). This is actually not so bad, -because disc is cheap these days. Embedded systems would care about -256 kBytes of /dev inodes, but you could argue that embedded systems -would have hand-tuned /dev directories. I've had to do just that on my -embedded systems, but I would rather just leave it to devfs. - -Another issue is the time taken to lookup an inode when first -referenced. Not only does this take time in scanning through a list in -memory, but also the seek times to read the inodes off disc. -This could be solved in user-space using a clever programme which -scanned the kernel logs and deleted /dev entries which are not -available and created them when they were available. This programme -would need to be run every time a new module was loaded, which would -slow things down a lot. - -There is an existing programme called scsidev which will automatically -create device nodes for SCSI devices. It can do this by scanning files -in /proc/scsi. Unfortunately, to extend this idea to other device -nodes would require significant modifications to existing drivers (so -they too would provide information in /proc). This is a non-trivial -change (I should know: devfs has had to do something similar). Once -you go to this much effort, you may as well use devfs itself (which -also provides this information). Furthermore, such a system would -likely be implemented in an ad-hoc fashion, as different drivers will -provide their information in different ways. - -Devfs is much cleaner, because it (naturally) has a uniform mechanism -to provide this information: the device nodes themselves! - - -Node to driver file_operations translation - -There is an important difference between the way disc-based character -and block nodes and devfs entries make the connection between an entry -in /dev and the actual device driver. - -With the current 8 bit major and minor numbers the connection between -disc-based c&b nodes and per-major drivers is done through a -fixed-length table of 128 entries. The various filesystem types set -the inode operations for c&b nodes to {chr,blk}dev_inode_operations, -so when a device is opened a few quick levels of indirection bring us -to the driver file_operations. - -For miscellaneous character devices a second step is required: there -is a scan for the driver entry with the same minor number as the file -that was opened, and the appropriate minor open method is called. This -scanning is done *every time* you open a device node. Potentially, you -may be searching through dozens of misc. entries before you find your -open method. While not an enormous performance overhead, this does -seem pointless. - -Linux *must* move beyond the 8 bit major and minor barrier, -somehow. If we simply increase each to 16 bits, then the indexing -scheme used for major driver lookup becomes untenable, because the -major tables (one each for character and block devices) would need to -be 64 k entries long (512 kBytes on x86, 1 MByte for 64 bit -systems). So we would have to use a scheme like that used for -miscellaneous character devices, which means the search time goes up -linearly with the average number of major device drivers on your -system. Not all "devices" are hardware, some are higher-level drivers -like KGI, so you can get more "devices" without adding hardware -You can improve this by creating an ordered (balanced:-) -binary tree, in which case your search time becomes log(N). -Alternatively, you can use hashing to speed up the search. -But why do that search at all if you don't have to? Once again, it -seems pointless. - -Note that devfs doesn't use the major&minor system. For devfs -entries, the connection is done when you lookup the /dev entry. When -devfs_register() is called, an internal table is appended which has -the entry name and the file_operations. If the dentry cache doesn't -have the /dev entry already, this internal table is scanned to get the -file_operations, and an inode is created. If the dentry cache already -has the entry, there is *no lookup time* (other than the dentry scan -itself, but we can't avoid that anyway, and besides Linux dentries -cream other OS's which don't have them:-). Furthermore, the number of -node entries in a devfs is only the number of available device -entries, not the number of *conceivable* entries. Even if you remove -unnecessary entries in a disc-based /dev, the number of conceivable -entries remains the same: you just limit yourself in order to save -space. - -Devfs provides a fast connection between a VFS node and the device -driver, in a scalable way. - -/dev as a system administration tool - -Right now /dev contains a list of conceivable devices, most of which I -don't have. Devfs only shows those devices available on my -system. This means that listing /dev is a handy way of checking what -devices are available. - -Major&minor size - -Existing major and minor numbers are limited to 8 bits each. This is -now a limiting factor for some drivers, particularly the SCSI disc -driver, which consumes a single major number. Only 16 discs are -supported, and each disc may have only 15 partitions. Maybe this isn't -a problem for you, but some of us are building huge Linux systems with -disc arrays. With devfs an arbitrary pointer can be associated with -each device entry, which can be used to give an effective 32 bit -device identifier (i.e. that's like having a 32 bit minor -number). Since this is private to the kernel, there are no C library -compatibility issues which you would have with increasing major and -minor number sizes. See the section on "Allocation of Device Numbers" -for details on maintaining compatibility with userspace. - -Solving this requires a kernel change. - -Since writing this, the kernel has been modified so that the SCSI disc -driver has more major numbers allocated to it and now supports up to -128 discs. Since these major numbers are non-contiguous (a result of -unplanned expansion), the implementation is a little more cumbersome -than originally. - -Just like the changes to IPv4 to fix impending limitations in the -address space, people find ways around the limitations. In the long -run, however, solutions like IPv6 or devfs can't be put off forever. - -Read-only root filesystem - -Having your device nodes on the root filesystem means that you can't -operate properly with a read-only root filesystem. This is because you -want to change ownerships and protections of tty devices. Existing -practice prevents you using a CD-ROM as your root filesystem for a -*real* system. Sure, you can boot off a CD-ROM, but you can't change -tty ownerships, so it's only good for installing. - -Also, you can't use a shared NFS root filesystem for a cluster of -discless Linux machines (having tty ownerships changed on a common -/dev is not good). Nor can you embed your root filesystem in a -ROM-FS. - -You can get around this by creating a RAMDISC at boot time, making -an ext2 filesystem in it, mounting it somewhere and copying the -contents of /dev into it, then unmounting it and mounting it over -/dev. - -A devfs is a cleaner way of solving this. - -Non-Unix root filesystem - -Non-Unix filesystems (such as NTFS) can't be used for a root -filesystem because they variously don't support character and block -special files or symbolic links. You can't have a separate disc-based -or RAMDISC-based filesystem mounted on /dev because you need device -nodes before you can mount these. Devfs can be mounted without any -device nodes. Devlinks won't work because symlinks aren't supported. -An alternative solution is to use initrd to mount a RAMDISC initial -root filesystem (which is populated with a minimal set of device -nodes), and then construct a new /dev in another RAMDISC, and finally -switch to your non-Unix root filesystem. This requires clever boot -scripts and a fragile and conceptually complex boot procedure. - -Devfs solves this in a robust and conceptually simple way. - -PTY security - -Current pseudo-tty (pty) devices are owned by root and read-writable -by everyone. The user of a pty-pair cannot change -ownership/protections without being suid-root. - -This could be solved with a secure user-space daemon which runs as -root and does the actual creation of pty-pairs. Such a daemon would -require modification to *every* programme that wants to use this new -mechanism. It also slows down creation of pty-pairs. - -An alternative is to create a new open_pty() syscall which does much -the same thing as the user-space daemon. Once again, this requires -modifications to pty-handling programmes. - -The devfs solution allows a device driver to "tag" certain device -files so that when an unopened device is opened, the ownerships are -changed to the current euid and egid of the opening process, and the -protections are changed to the default registered by the driver. When -the device is closed ownership is set back to root and protections are -set back to read-write for everybody. No programme need be changed. -The devpts filesystem provides this auto-ownership feature for Unix98 -ptys. It doesn't support old-style pty devices, nor does it have all -the other features of devfs. - -Intelligent device management - -Devfs implements a simple yet powerful protocol for communication with -a device management daemon (devfsd) which runs in user space. It is -possible to send a message (either synchronously or asynchronously) to -devfsd on any event, such as registration/unregistration of device -entries, opening and closing devices, looking up inodes, scanning -directories and more. This has many possibilities. Some of these are -already implemented. See: - - -http://www.atnf.csiro.au/~rgooch/linux/ - -Device entry registration events can be used by devfsd to change -permissions of newly-created device nodes. This is one mechanism to -control device permissions. - -Device entry registration/unregistration events can be used to run -programmes or scripts. This can be used to provide automatic mounting -of filesystems when a new block device media is inserted into the -drive. - -Asynchronous device open and close events can be used to implement -clever permissions management. For example, the default permissions on -/dev/dsp do not allow everybody to read from the device. This is -sensible, as you don't want some remote user recording what you say at -your console. However, the console user is also prevented from -recording. This behaviour is not desirable. With asynchronous device -open and close events, you can have devfsd run a programme or script -when console devices are opened to change the ownerships for *other* -device nodes (such as /dev/dsp). On closure, you can run a different -script to restore permissions. An advantage of this scheme over -modifying the C library tty handling is that this works even if your -programme crashes (how many times have you seen the utmp database with -lingering entries for non-existent logins?). - -Synchronous device open events can be used to perform intelligent -device access protections. Before the device driver open() method is -called, the daemon must first validate the open attempt, by running an -external programme or script. This is far more flexible than access -control lists, as access can be determined on the basis of other -system conditions instead of just the UID and GID. - -Inode lookup events can be used to authenticate module autoload -requests. Instead of using kmod directly, the event is sent to -devfsd which can implement an arbitrary authentication before loading -the module itself. - -Inode lookup events can also be used to construct arbitrary -namespaces, without having to resort to populating devfs with symlinks -to devices that don't exist. - -Speculative Device Scanning - -Consider an application (like cdparanoia) that wants to find all -CD-ROM devices on the system (SCSI, IDE and other types), whether or -not their respective modules are loaded. The application must -speculatively open certain device nodes (such as /dev/sr0 for the SCSI -CD-ROMs) in order to make sure the module is loaded. This requires -that all Linux distributions follow the standard device naming scheme -(last time I looked RedHat did things differently). Devfs solves the -naming problem. - -The same application also wants to see which devices are actually -available on the system. With the existing system it needs to read the -/dev directory and speculatively open each /dev/sr* device to -determine if the device exists or not. With a large /dev this is an -inefficient operation, especially if there are many /dev/sr* nodes. A -solution like scsidev could reduce the number of /dev/sr* entries (but -of course that also requires all that inefficient directory scanning). - -With devfs, the application can open the /dev/sr directory -(which triggers the module autoloading if required), and proceed to -read /dev/sr. Since only the available devices will have -entries, there are no inefficencies in directory scanning or device -openings. - ------------------------------------------------------------------------------ - -Who else does it? - -FreeBSD has a devfs implementation. Solaris and AIX each have a -pseudo-devfs (something akin to scsidev but for all devices, with some -unspecified kernel support). BeOS, Plan9 and QNX also have it. SGI's -IRIX 6.4 and above also have a device filesystem. - -While we shouldn't just automatically do something because others do -it, we should not ignore the work of others either. FreeBSD has a lot -of competent people working on it, so their opinion should not be -blithely ignored. - ------------------------------------------------------------------------------ - - -How it works - -Registering device entries - -For every entry (device node) in a devfs-based /dev a driver must call -devfs_register(). This adds the name of the device entry, the -file_operations structure pointer and a few other things to an -internal table. Device entries may be added and removed at any -time. When a device entry is registered, it automagically appears in -any mounted devfs'. - -Inode lookup - -When a lookup operation on an entry is performed and if there is no -driver information for that entry devfs will attempt to call -devfsd. If still no driver information can be found then a negative -dentry is yielded and the next stage operation will be called by the -VFS (such as create() or mknod() inode methods). If driver information -can be found, an inode is created (if one does not exist already) and -all is well. - -Manually creating device nodes - -The mknod() method allows you to create an ordinary named pipe in the -devfs, or you can create a character or block special inode if one -does not already exist. You may wish to create a character or block -special inode so that you can set permissions and ownership. Later, if -a device driver registers an entry with the same name, the -permissions, ownership and times are retained. This is how you can set -the protections on a device even before the driver is loaded. Once you -create an inode it appears in the directory listing. - -Unregistering device entries - -A device driver calls devfs_unregister() to unregister an entry. - -Chroot() gaols - -2.2.x kernels - -The semantics of inode creation are different when devfs is mounted -with the "explicit" option. Now, when a device entry is registered, it -will not appear until you use mknod() to create the device. It doesn't -matter if you mknod() before or after the device is registered with -devfs_register(). The purpose of this behaviour is to support -chroot(2) gaols, where you want to mount a minimal devfs inside the -gaol. Only the devices you specifically want to be available (through -your mknod() setup) will be accessible. - -2.4.x kernels - -As of kernel 2.3.99, the VFS has had the ability to rebind parts of -the global filesystem namespace into another part of the namespace. -This now works even at the leaf-node level, which means that -individual files and device nodes may be bound into other parts of the -namespace. This is like making links, but better, because it works -across filesystems (unlike hard links) and works through chroot() -gaols (unlike symbolic links). - -Because of these improvements to the VFS, the multi-mount capability -in devfs is no longer needed. The administrator may create a minimal -device tree inside a chroot(2) gaol by using VFS bindings. As this -provides most of the features of the devfs multi-mount capability, I -removed the multi-mount support code (after issuing an RFC). This -yielded code size reductions and simplifications. - -If you want to construct a minimal chroot() gaol, the following -command should suffice: - -mount --bind /dev/null /gaol/dev/null - - -Repeat for other device nodes you want to expose. Simple! - ------------------------------------------------------------------------------ - - -Operational issues - - -Instructions for the impatient - -Nobody likes reading documentation. People just want to get in there -and play. So this section tells you quickly the steps you need to take -to run with devfs mounted over /dev. Skip these steps and you will end -up with a nearly unbootable system. Subsequent sections describe the -issues in more detail, and discuss non-essential configuration -options. - -Devfsd -OK, if you're reading this, I assume you want to play with -devfs. First you should ensure that /usr/src/linux contains a -recent kernel source tree. Then you need to compile devfsd, the device -management daemon, available at - -http://www.atnf.csiro.au/~rgooch/linux/. -Because the kernel has a naming scheme -which is quite different from the old naming scheme, you need to -install devfsd so that software and configuration files that use the -old naming scheme will not break. - -Compile and install devfsd. You will be provided with a default -configuration file /etc/devfsd.conf which will provide -compatibility symlinks for the old naming scheme. Don't change this -config file unless you know what you're doing. Even if you think you -do know what you're doing, don't change it until you've followed all -the steps below and booted a devfs-enabled system and verified that it -works. - -Now edit your main system boot script so that devfsd is started at the -very beginning (before any filesystem -checks). /etc/rc.d/rc.sysinit is often the main boot script -on systems with SysV-style boot scripts. On systems with BSD-style -boot scripts it is often /etc/rc. Also check -/sbin/rc. - -NOTE that the line you put into the boot -script should be exactly: - -/sbin/devfsd /dev - -DO NOT use some special daemon-launching -programme, otherwise the boot script may not wait for devfsd to finish -initialising. - -System Libraries -There may still be some problems because of broken software making -assumptions about device names. In particular, some software does not -handle devices which are symbolic links. If you are running a libc 5 -based system, install libc 5.4.44 (if you have libc 5.4.46, go back to -libc 5.4.44, which is actually correct). If you are running a glibc -based system, make sure you have glibc 2.1.3 or later. - -/etc/securetty -PAM (Pluggable Authentication Modules) is supposed to be a flexible -mechanism for providing better user authentication and access to -services. Unfortunately, it's also fragile, complex and undocumented -(check out RedHat 6.1, and probably other distributions as well). PAM -has problems with symbolic links. Append the following lines to your -/etc/securetty file: - -vc/1 -vc/2 -vc/3 -vc/4 -vc/5 -vc/6 -vc/7 -vc/8 - -This will not weaken security. If you have a version of util-linux -earlier than 2.10.h, please upgrade to 2.10.h or later. If you -absolutely cannot upgrade, then also append the following lines to -your /etc/securetty file: - -1 -2 -3 -4 -5 -6 -7 -8 - -This may potentially weaken security by allowing root logins over the -network (a password is still required, though). However, since there -are problems with dealing with symlinks, I'm suspicious of the level -of security offered in any case. - -XFree86 -While not essential, it's probably a good idea to upgrade to XFree86 -4.0, as patches went in to make it more devfs-friendly. If you don't, -you'll probably need to apply the following patch to -/etc/security/console.perms so that ordinary users can run -startx. Note that not all distributions have this file (e.g. Debian), -so if it's not present, don't worry about it. - ---- /etc/security/console.perms.orig Sat Apr 17 16:26:47 1999 -+++ /etc/security/console.perms Fri Feb 25 23:53:55 2000 -@@ -14,7 +14,7 @@ - # man 5 console.perms - - # file classes -- these are regular expressions --<console>=tty[0-9][0-9]* :[0-9]\.[0-9] :[0-9] -+<console>=tty[0-9][0-9]* vc/[0-9][0-9]* :[0-9]\.[0-9] :[0-9] - - # device classes -- these are shell-style globs - <floppy>=/dev/fd[0-1]* - -If the patch does not apply, then change the line: - -<console>=tty[0-9][0-9]* :[0-9]\.[0-9] :[0-9] - -with: - -<console>=tty[0-9][0-9]* vc/[0-9][0-9]* :[0-9]\.[0-9] :[0-9] - - -Disable devpts -I've had a report of devpts mounted on /dev/pts not working -correctly. Since devfs will also manage /dev/pts, there is no -need to mount devpts as well. You should either edit your -/etc/fstab so devpts is not mounted, or disable devpts from -your kernel configuration. - -Unsupported drivers -Not all drivers have devfs support. If you depend on one of these -drivers, you will need to create a script or tarfile that you can use -at boot time to create device nodes as appropriate. There is a -section which describes this. Another -section lists the drivers which have -devfs support. - -/dev/mouse - -Many disributions configure /dev/mouse to be the mouse device -for XFree86 and GPM. I actually think this is a bad idea, because it -adds another level of indirection. When looking at a config file, if -you see /dev/mouse you're left wondering which mouse -is being referred to. Hence I recommend putting the actual mouse -device (for example /dev/psaux) into your -/etc/X11/XF86Config file (and similarly for the GPM -configuration file). - -Alternatively, use the same technique used for unsupported drivers -described above. - -The Kernel -Finally, you need to make sure devfs is compiled into your kernel. Set -CONFIG_EXPERIMENTAL=y, CONFIG_DEVFS_FS=y and CONFIG_DEVFS_MOUNT=y by -using favourite configuration tool (i.e. make config or -make xconfig) and then make clean and then recompile your kernel and -modules. At boot, devfs will be mounted onto /dev. - -If you encounter problems booting (for example if you forgot a -configuration step), you can pass devfs=nomount at the kernel -boot command line. This will prevent the kernel from mounting devfs at -boot time onto /dev. - -In general, a kernel built with CONFIG_DEVFS_FS=y but without mounting -devfs onto /dev is completely safe, and requires no -configuration changes. One exception to take note of is when -LABEL= directives are used in /etc/fstab. In this -case you will be unable to boot properly. This is because the -mount(8) programme uses /proc/partitions as part of -the volume label search process, and the device names it finds are not -available, because setting CONFIG_DEVFS_FS=y changes the names in -/proc/partitions, irrespective of whether devfs is mounted. - -Now you've finished all the steps required. You're now ready to boot -your shiny new kernel. Enjoy. - -Changing the configuration - -OK, you've now booted a devfs-enabled system, and everything works. -Now you may feel like changing the configuration (common targets are -/etc/fstab and /etc/devfsd.conf). Since you have a -system that works, if you make any changes and it doesn't work, you -now know that you only have to restore your configuration files to the -default and it will work again. - - -Permissions persistence across reboots - -If you don't use mknod(2) to create a device file, nor use chmod(2) or -chown(2) to change the ownerships/permissions, the inode ctime will -remain at 0 (the epoch, 12 am, 1-JAN-1970, GMT). Anything with a ctime -later than this has had it's ownership/permissions changed. Hence, a -simple script or programme may be used to tar up all changed inodes, -prior to shutdown. Although effective, many consider this approach a -kludge. - -A much better approach is to use devfsd to save and restore -permissions. It may be configured to record changes in permissions and -will save them in a database (in fact a directory tree), and restore -these upon boot. This is an efficient method and results in immediate -saving of current permissions (unlike the tar approach, which saves -permissions at some unspecified future time). - -The default configuration file supplied with devfsd has config entries -which you may uncomment to enable persistence management. - -If you decide to use the tar approach anyway, be aware that tar will -first unlink(2) an inode before creating a new device node. The -unlink(2) has the effect of breaking the connection between a devfs -entry and the device driver. If you use the "devfs=only" boot option, -you lose access to the device driver, requiring you to reload the -module. I consider this a bug in tar (there is no real need to -unlink(2) the inode first). - -Alternatively, you can use devfsd to provide more sophisticated -management of device permissions. You can use devfsd to store -permissions for whole groups of devices with a single configuration -entry, rather than the conventional single entry per device entry. - -Permissions database stored in mounted-over /dev - -If you wish to save and restore your device permissions into the -disc-based /dev while still mounting devfs onto /dev -you may do so. This requires a 2.4.x kernel (in fact, 2.3.99 or -later), which has the VFS binding facility. You need to do the -following to set this up: - - - -make sure the kernel does not mount devfs at boot time - - -make sure you have a correct /dev/console entry in your -root file-system (where your disc-based /dev lives) - -create the /dev-state directory - - -add the following lines near the very beginning of your boot -scripts: - -mount --bind /dev /dev-state -mount -t devfs none /dev -devfsd /dev - - - - -add the following lines to your /etc/devfsd.conf file: - -REGISTER ^pt[sy] IGNORE -CREATE ^pt[sy] IGNORE -CHANGE ^pt[sy] IGNORE -DELETE ^pt[sy] IGNORE -REGISTER .* COPY /dev-state/$devname $devpath -CREATE .* COPY $devpath /dev-state/$devname -CHANGE .* COPY $devpath /dev-state/$devname -DELETE .* CFUNCTION GLOBAL unlink /dev-state/$devname -RESTORE /dev-state - -Note that the sample devfsd.conf file contains these lines, -as well as other sample configurations you may find useful. See the -devfsd distribution - - -reboot. - - - - -Permissions database stored in normal directory - -If you are using an older kernel which doesn't support VFS binding, -then you won't be able to have the permissions database in a -mounted-over /dev. However, you can still use a regular -directory to store the database. The sample /etc/devfsd.conf -file above may still be used. You will need to create the -/dev-state directory prior to installing devfsd. If you have -old permissions in /dev, then just copy (or move) the device -nodes over to the new directory. - -Which method is better? - -The best method is to have the permissions database stored in the -mounted-over /dev. This is because you will not need to copy -device nodes over to /dev-state, and because it allows you to -switch between devfs and non-devfs kernels, without requiring you to -copy permissions between /dev-state (for devfs) and -/dev (for non-devfs). - - -Dealing with drivers without devfs support - -Currently, not all device drivers in the kernel have been modified to -use devfs. Device drivers which do not yet have devfs support will not -automagically appear in devfs. The simplest way to create device nodes -for these drivers is to unpack a tarfile containing the required -device nodes. You can do this in your boot scripts. All your drivers -will now work as before. - -Hopefully for most people devfs will have enough support so that they -can mount devfs directly over /dev without losing most functionality -(i.e. losing access to various devices). As of 22-JAN-1998 (devfs -patch version 10) I am now running this way. All the devices I have -are available in devfs, so I don't lose anything. - -WARNING: if your configuration requires the old-style device names -(i.e. /dev/hda1 or /dev/sda1), you must install devfsd and configure -it to maintain compatibility entries. It is almost certain that you -will require this. Note that the kernel creates a compatibility entry -for the root device, so you don't need initrd. - -Note that you no longer need to mount devpts if you use Unix98 PTYs, -as devfs can manage /dev/pts itself. This saves you some RAM, as you -don't need to compile and install devpts. Note that some versions of -glibc have a bug with Unix98 pty handling on devfs systems. Contact -the glibc maintainers for a fix. Glibc 2.1.3 has the fix. - -Note also that apart from editing /etc/fstab, other things will need -to be changed if you *don't* install devfsd. Some software (like the X -server) hard-wire device names in their source. It really is much -easier to install devfsd so that compatibility entries are created. -You can then slowly migrate your system to using the new device names -(for example, by starting with /etc/fstab), and then limiting the -compatibility entries that devfsd creates. - -IF YOU CONFIGURE TO MOUNT DEVFS AT BOOT, MAKE SURE YOU INSTALL DEVFSD -BEFORE YOU BOOT A DEVFS-ENABLED KERNEL! - -Now that devfs has gone into the 2.3.46 kernel, I'm getting a lot of -reports back. Many of these are because people are trying to run -without devfsd, and hence some things break. Please just run devfsd if -things break. I want to concentrate on real bugs rather than -misconfiguration problems at the moment. If people are willing to fix -bugs/false assumptions in other code (i.e. glibc, X server) and submit -that to the respective maintainers, that would be great. - - -All the way with Devfs - -The devfs kernel patch creates a rationalised device tree. As stated -above, if you want to keep using the old /dev naming scheme, -you just need to configure devfsd appopriately (see the man -page). People who prefer the old names can ignore this section. For -those of us who like the rationalised names and an uncluttered -/dev, read on. - -If you don't run devfsd, or don't enable compatibility entry -management, then you will have to configure your system to use the new -names. For example, you will then need to edit your -/etc/fstab to use the new disc naming scheme. If you want to -be able to boot non-devfs kernels, you will need compatibility -symlinks in the underlying disc-based /dev pointing back to -the old-style names for when you boot a kernel without devfs. - -You can selectively decide which devices you want compatibility -entries for. For example, you may only want compatibility entries for -BSD pseudo-terminal devices (otherwise you'll have to patch you C -library or use Unix98 ptys instead). It's just a matter of putting in -the correct regular expression into /dev/devfsd.conf. - -There are other choices of naming schemes that you may prefer. For -example, I don't use the kernel-supplied -names, because they are too verbose. A common misconception is -that the kernel-supplied names are meant to be used directly in -configuration files. This is not the case. They are designed to -reflect the layout of the devices attached and to provide easy -classification. - -If you like the kernel-supplied names, that's fine. If you don't then -you should be using devfsd to construct a namespace more to your -liking. Devfsd has built-in code to construct a -namespace that is both logical and easy to -manage. In essence, it creates a convenient abbreviation of the -kernel-supplied namespace. - -You are of course free to build your own namespace. Devfsd has all the -infrastructure required to make this easy for you. All you need do is -write a script. You can even write some C code and devfsd can load the -shared object as a callable extension. - - -Other Issues - -The init programme -Another thing to take note of is whether your init programme -creates a Unix socket /dev/telinit. Some versions of init -create /dev/telinit so that the telinit programme can -communicate with the init process. If you have such a system you need -to make sure that devfs is mounted over /dev *before* init -starts. In other words, you can't leave the mounting of devfs to -/etc/rc, since this is executed after init. Other -versions of init require a named pipe /dev/initctl -which must exist *before* init starts. Once again, you need to -mount devfs and then create the named pipe *before* init -starts. - -The default behaviour now is not to mount devfs onto /dev at -boot time for 2.3.x and later kernels. You can correct this with the -"devfs=mount" boot option. This solves any problems with init, -and also prevents the dreaded: - -Cannot open initial console - -message. For 2.2.x kernels where you need to apply the devfs patch, -the default is to mount. - -If you have automatic mounting of devfs onto /dev then you -may need to create /dev/initctl in your boot scripts. The -following lines should suffice: - -mknod /dev/initctl p -kill -SIGUSR1 1 # tell init that /dev/initctl now exists - -Alternatively, if you don't want the kernel to mount devfs onto -/dev then you could use the following procedure is a -guideline for how to get around /dev/initctl problems: - -# cd /sbin -# mv init init.real -# cat > init -#! /bin/sh -mount -n -t devfs none /dev -mknod /dev/initctl p -exec /sbin/init.real $* -[control-D] -# chmod a+x init - -Note that newer versions of init create /dev/initctl -automatically, so you don't have to worry about this. - -Module autoloading -You will need to configure devfsd to enable module -autoloading. The following lines should be placed in your -/etc/devfsd.conf file: - -LOOKUP .* MODLOAD - - -As of devfsd-v1.3.10, a generic /etc/modules.devfs -configuration file is installed, which is used by the MODLOAD -action. This should be sufficient for most configurations. If you -require further configuration, edit your /etc/modules.conf -file. The way module autoloading work with devfs is: - - -a process attempts to lookup a device node (e.g. /dev/fred) - - -if that device node does not exist, the full pathname is passed to -devfsd as a string - - -devfsd will pass the string to the modprobe programme (provided the -configuration line shown above is present), and specifies that -/etc/modules.devfs is the configuration file - - -/etc/modules.devfs includes /etc/modules.conf to -access local configurations - -modprobe will search it's configuration files, looking for an alias -that translates the pathname into a module name - - -the translated pathname is then used to load the module. - - -If you wanted a lookup of /dev/fred to load the -mymod module, you would require the following configuration -line in /etc/modules.conf: - -alias /dev/fred mymod - -The /etc/modules.devfs configuration file provides many such -aliases for standard device names. If you look closely at this file, -you will note that some modules require multiple alias configuration -lines. This is required to support module autoloading for old and new -device names. - -Mounting root off a devfs device -If you wish to mount root off a devfs device when you pass the -"devfs=only" boot option, then you need to pass in the -"root=<device>" option to the kernel when booting. If you use -LILO, then you must have this in lilo.conf: - -append = "root=<device>" - -Surprised? Yep, so was I. It turns out if you have (as most people -do): - -root = <device> - - -then LILO will determine the device number of <device> and will -write that device number into a special place in the kernel image -before starting the kernel, and the kernel will use that device number -to mount the root filesystem. So, using the "append" variety ensures -that LILO passes the root filesystem device as a string, which devfs -can then use. - -Note that this isn't an issue if you don't pass "devfs=only". - -TTY issues -The ttyname(3) function in some versions of the C library makes -false assumptions about device entries which are symbolic links. The -tty(1) programme is one that depends on this function. I've -written a patch to libc 5.4.43 which fixes this. This has been -included in libc 5.4.44 and a similar fix is in glibc 2.1.3. - - -Kernel Naming Scheme - -The kernel provides a default naming scheme. This scheme is designed -to make it easy to search for specific devices or device types, and to -view the available devices. Some device types (such as hard discs), -have a directory of entries, making it easy to see what devices of -that class are available. Often, the entries are symbolic links into a -directory tree that reflects the topology of available devices. The -topological tree is useful for finding how your devices are arranged. - -Below is a list of the naming schemes for the most common drivers. A -list of reserved device names is -available for reference. Please send email to -rgooch@atnf.csiro.au to obtain an allocation. Please be -patient (the maintainer is busy). An alternative name may be allocated -instead of the requested name, at the discretion of the maintainer. - -Disc Devices - -All discs, whether SCSI, IDE or whatever, are placed under the -/dev/discs hierarchy: - - /dev/discs/disc0 first disc - /dev/discs/disc1 second disc - - -Each of these entries is a symbolic link to the directory for that -device. The device directory contains: - - disc for the whole disc - part* for individual partitions - - -CD-ROM Devices - -All CD-ROMs, whether SCSI, IDE or whatever, are placed under the -/dev/cdroms hierarchy: - - /dev/cdroms/cdrom0 first CD-ROM - /dev/cdroms/cdrom1 second CD-ROM - - -Each of these entries is a symbolic link to the real device entry for -that device. - -Tape Devices - -All tapes, whether SCSI, IDE or whatever, are placed under the -/dev/tapes hierarchy: - - /dev/tapes/tape0 first tape - /dev/tapes/tape1 second tape - - -Each of these entries is a symbolic link to the directory for that -device. The device directory contains: - - mt for mode 0 - mtl for mode 1 - mtm for mode 2 - mta for mode 3 - mtn for mode 0, no rewind - mtln for mode 1, no rewind - mtmn for mode 2, no rewind - mtan for mode 3, no rewind - - -SCSI Devices - -To uniquely identify any SCSI device requires the following -information: - - controller (host adapter) - bus (SCSI channel) - target (SCSI ID) - unit (Logical Unit Number) - - -All SCSI devices are placed under /dev/scsi (assuming devfs -is mounted on /dev). Hence, a SCSI device with the following -parameters: c=1,b=2,t=3,u=4 would appear as: - - /dev/scsi/host1/bus2/target3/lun4 device directory - - -Inside this directory, a number of device entries may be created, -depending on which SCSI device-type drivers were installed. - -See the section on the disc naming scheme to see what entries the SCSI -disc driver creates. - -See the section on the tape naming scheme to see what entries the SCSI -tape driver creates. - -The SCSI CD-ROM driver creates: - - cd - - -The SCSI generic driver creates: - - generic - - -IDE Devices - -To uniquely identify any IDE device requires the following -information: - - controller - bus (aka. primary/secondary) - target (aka. master/slave) - unit - - -All IDE devices are placed under /dev/ide, and uses a similar -naming scheme to the SCSI subsystem. - -XT Hard Discs - -All XT discs are placed under /dev/xd. The first XT disc has -the directory /dev/xd/disc0. - -TTY devices - -The tty devices now appear as: - - New name Old-name Device Type - -------- -------- ----------- - /dev/tts/{0,1,...} /dev/ttyS{0,1,...} Serial ports - /dev/cua/{0,1,...} /dev/cua{0,1,...} Call out devices - /dev/vc/0 /dev/tty Current virtual console - /dev/vc/{1,2,...} /dev/tty{1...63} Virtual consoles - /dev/vcc/{0,1,...} /dev/vcs{1...63} Virtual consoles - /dev/pty/m{0,1,...} /dev/ptyp?? PTY masters - /dev/pty/s{0,1,...} /dev/ttyp?? PTY slaves - - -RAMDISCS - -The RAMDISCS are placed in their own directory, and are named thus: - - /dev/rd/{0,1,2,...} - - -Meta Devices - -The meta devices are placed in their own directory, and are named -thus: - - /dev/md/{0,1,2,...} - - -Floppy discs - -Floppy discs are placed in the /dev/floppy directory. - -Loop devices - -Loop devices are placed in the /dev/loop directory. - -Sound devices - -Sound devices are placed in the /dev/sound directory -(audio, sequencer, ...). - - -Devfsd Naming Scheme - -Devfsd provides a naming scheme which is a convenient abbreviation of -the kernel-supplied namespace. In some -cases, the kernel-supplied naming scheme is quite convenient, so -devfsd does not provide another naming scheme. The convenience names -that devfsd creates are in fact the same names as the original devfs -kernel patch created (before Linus mandated the Big Name -Change). These are referred to as "new compatibility entries". - -In order to configure devfsd to create these convenience names, the -following lines should be placed in your /etc/devfsd.conf: - -REGISTER .* MKNEWCOMPAT -UNREGISTER .* RMNEWCOMPAT - -This will cause devfsd to create (and destroy) symbolic links which -point to the kernel-supplied names. - -SCSI Hard Discs - -All SCSI discs are placed under /dev/sd (assuming devfs is -mounted on /dev). Hence, a SCSI disc with the following -parameters: c=1,b=2,t=3,u=4 would appear as: - - /dev/sd/c1b2t3u4 for the whole disc - /dev/sd/c1b2t3u4p5 for the 5th partition - /dev/sd/c1b2t3u4p5s6 for the 6th slice in the 5th partition - - -SCSI Tapes - -All SCSI tapes are placed under /dev/st. A similar naming -scheme is used as for SCSI discs. A SCSI tape with the -parameters:c=1,b=2,t=3,u=4 would appear as: - - /dev/st/c1b2t3u4m0 for mode 0 - /dev/st/c1b2t3u4m1 for mode 1 - /dev/st/c1b2t3u4m2 for mode 2 - /dev/st/c1b2t3u4m3 for mode 3 - /dev/st/c1b2t3u4m0n for mode 0, no rewind - /dev/st/c1b2t3u4m1n for mode 1, no rewind - /dev/st/c1b2t3u4m2n for mode 2, no rewind - /dev/st/c1b2t3u4m3n for mode 3, no rewind - - -SCSI CD-ROMs - -All SCSI CD-ROMs are placed under /dev/sr. A similar naming -scheme is used as for SCSI discs. A SCSI CD-ROM with the -parameters:c=1,b=2,t=3,u=4 would appear as: - - /dev/sr/c1b2t3u4 - - -SCSI Generic Devices - -The generic (aka. raw) interface for all SCSI devices are placed under -/dev/sg. A similar naming scheme is used as for SCSI discs. A -SCSI generic device with the parameters:c=1,b=2,t=3,u=4 would appear -as: - - /dev/sg/c1b2t3u4 - - -IDE Hard Discs - -All IDE discs are placed under /dev/ide/hd, using a similar -convention to SCSI discs. The following mappings exist between the new -and the old names: - - /dev/hda /dev/ide/hd/c0b0t0u0 - /dev/hdb /dev/ide/hd/c0b0t1u0 - /dev/hdc /dev/ide/hd/c0b1t0u0 - /dev/hdd /dev/ide/hd/c0b1t1u0 - - -IDE Tapes - -A similar naming scheme is used as for IDE discs. The entries will -appear in the /dev/ide/mt directory. - -IDE CD-ROM - -A similar naming scheme is used as for IDE discs. The entries will -appear in the /dev/ide/cd directory. - -IDE Floppies - -A similar naming scheme is used as for IDE discs. The entries will -appear in the /dev/ide/fd directory. - -XT Hard Discs - -All XT discs are placed under /dev/xd. The first XT disc -would appear as /dev/xd/c0t0. - - -Old Compatibility Names - -The old compatibility names are the legacy device names, such as -/dev/hda, /dev/sda, /dev/rtc and so on. -Devfsd can be configured to create compatibility symlinks so that you -may continue to use the old names in your configuration files and so -that old applications will continue to function correctly. - -In order to configure devfsd to create these legacy names, the -following lines should be placed in your /etc/devfsd.conf: - -REGISTER .* MKOLDCOMPAT -UNREGISTER .* RMOLDCOMPAT - -This will cause devfsd to create (and destroy) symbolic links which -point to the kernel-supplied names. - - ------------------------------------------------------------------------------ - - -Device drivers currently ported - -- All miscellaneous character devices support devfs (this is done - transparently through misc_register()) - -- SCSI discs and generic hard discs - -- Character memory devices (null, zero, full and so on) - Thanks to C. Scott Ananian <cananian@alumni.princeton.edu> - -- Loop devices (/dev/loop?) - -- TTY devices (console, serial ports, terminals and pseudo-terminals) - Thanks to C. Scott Ananian <cananian@alumni.princeton.edu> - -- SCSI tapes (/dev/scsi and /dev/tapes) - -- SCSI CD-ROMs (/dev/scsi and /dev/cdroms) - -- SCSI generic devices (/dev/scsi) - -- RAMDISCS (/dev/ram?) - -- Meta Devices (/dev/md*) - -- Floppy discs (/dev/floppy) - -- Parallel port printers (/dev/printers) - -- Sound devices (/dev/sound) - Thanks to Eric Dumas <dumas@linux.eu.org> and - C. Scott Ananian <cananian@alumni.princeton.edu> - -- Joysticks (/dev/joysticks) - -- Sparc keyboard (/dev/kbd) - -- DSP56001 digital signal processor (/dev/dsp56k) - -- Apple Desktop Bus (/dev/adb) - -- Coda network file system (/dev/cfs*) - -- Virtual console capture devices (/dev/vcc) - Thanks to Dennis Hou <smilax@mindmeld.yi.org> - -- Frame buffer devices (/dev/fb) - -- Video capture devices (/dev/v4l) - - ------------------------------------------------------------------------------ - - -Allocation of Device Numbers - -Devfs allows you to write a driver which doesn't need to allocate a -device number (major&minor numbers) for the internal operation of the -kernel. However, there are a number of userspace programmes that use -the device number as a unique handle for a device. An example is the -find programme, which uses device numbers to determine whether -an inode is on a different filesystem than another inode. The device -number used is the one for the block device which a filesystem is -using. To preserve compatibility with userspace programmes, block -devices using devfs need to have unique device numbers allocated to -them. Furthermore, POSIX specifies device numbers, so some kind of -device number needs to be presented to userspace. - -The simplest option (especially when porting drivers to devfs) is to -keep using the old major and minor numbers. Devfs will take whatever -values are given for major&minor and pass them onto userspace. - -This device number is a 16 bit number, so this leaves plenty of space -for large numbers of discs and partitions. This scheme can also be -used for character devices, in particular the tty devices, which are -currently limited to 256 pseudo-ttys (this limits the total number of -simultaneous xterms and remote logins). Note that the device number -is limited to the range 36864-61439 (majors 144-239), in order to -avoid any possible conflicts with existing official allocations. - -Please note that using dynamically allocated block device numbers may -break the NFS daemons (both user and kernel mode), which expect dev_t -for a given device to be constant over the lifetime of remote mounts. - -A final note on this scheme: since it doesn't increase the size of -device numbers, there are no compatibility issues with userspace. - ------------------------------------------------------------------------------ - - -Questions and Answers - - -Making things work -Alternatives to devfs -What I don't like about devfs -How to report bugs -Strange kernel messages -Compilation problems with devfsd - - - -Making things work - -Here are some common questions and answers. - - - -Devfsd doesn't start - -Make sure you have compiled and installed devfsd -Make sure devfsd is being started from your boot -scripts -Make sure you have configured your kernel to enable devfs (see -below) -Make sure devfs is mounted (see below) - - -Devfsd is not managing all my permissions - -Make sure you are capturing the appropriate events. For example, -device entries created by the kernel generate REGISTER events, -but those created by devfsd generate CREATE events. - - -Devfsd is not capturing all REGISTER events - -See the previous entry: you may need to capture CREATE events. - - -X will not start - -Make sure you followed the steps -outlined above. - - -Why don't my network devices appear in devfs? - -This is not a bug. Network devices have their own, completely separate -namespace. They are accessed via socket(2) and -setsockopt(2) calls, and thus require no device nodes. I have -raised the possibilty of moving network devices into the device -namespace, but have had no response. - - -How can I test if I have devfs compiled into my kernel? - -All filesystems built-in or currently loaded are listed in -/proc/filesystems. If you see a devfs entry, then -you know that devfs was compiled into your kernel. If you have -correctly configured and rebuilt your kernel, then devfs will be -built-in. If you think you've configured it in, but -/proc/filesystems doesn't show it, you've made a mistake. -Common mistakes include: - -Using a 2.2.x kernel without applying the devfs patch (if you -don't know how to patch your kernel, use 2.4.x instead, don't bother -asking me how to patch) -Forgetting to set CONFIG_EXPERIMENTAL=y -Forgetting to set CONFIG_DEVFS_FS=y -Forgetting to set CONFIG_DEVFS_MOUNT=y (if you want devfs -to be automatically mounted at boot) -Editing your .config manually, instead of using make -config or make xconfig -Forgetting to run make dep; make clean after changing the -configuration and before compiling -Forgetting to compile your kernel and modules -Forgetting to install your kernel -Forgetting to install your modules - -Please check twice that you've done all these steps before sending in -a bug report. - - - -How can I test if devfs is mounted on /dev? - -The device filesystem will always create an entry called -".devfsd", which is used to communicate with the daemon. Even -if the daemon is not running, this entry will exist. Testing for the -existence of this entry is the approved method of determining if devfs -is mounted or not. Note that the type of entry (i.e. regular file, -character device, named pipe, etc.) may change without notice. Only -the existence of the entry should be relied upon. - - -When I start devfsd, I see the error: -Error opening file: ".devfsd" No such file or directory? - -This means that devfs is not mounted. Make sure you have devfs mounted. - - -How do I mount devfs? - -First make sure you have devfs compiled into your kernel (see -above). Then you will either need to: - -set CONFIG_DEVFS_MOUNT=y in your kernel config -pass devfs=mount to your boot loader -mount devfs manually in your boot scripts with: -mount -t none devfs /dev - - - -Mount by volume LABEL=<label> doesn't work with -devfs - -Most probably you are not mounting devfs onto /dev. What -happens is that if your kernel config has CONFIG_DEVFS_FS=y -then the contents of /proc/partitions will have the devfs -names (such as scsi/host0/bus0/target0/lun0/part1). The -contents of /proc/partitions are used by mount(8) when -mounting by volume label. If devfs is not mounted on /dev, -then mount(8) will fail to find devices. The solution is to -make sure that devfs is mounted on /dev. See above for how to -do that. - - -I have extra or incorrect entries in /dev - -You may have stale entries in your dev-state area. Check for a -RESTORE configuration line in your devfsd configuration -(typically /etc/devfsd.conf). If you have this line, check -the contents of the specified directory for stale entries. Remove -any entries which are incorrect, then reboot. - - -I get "Unable to open initial console" messages at boot - -This usually happens when you don't have devfs automounted onto -/dev at boot time, and there is no valid -/dev/console entry on your root file-system. Create a valid -/dev/console device node. - - - - - -Alternatives to devfs - -I've attempted to collate all the anti-devfs proposals and explain -their limitations. Under construction. - - -Why not just pass device create/remove events to a daemon? - -Here the suggestion is to develop an API in the kernel so that devices -can register create and remove events, and a daemon listens for those -events. The daemon would then populate/depopulate /dev (which -resides on disc). - -This has several limitations: - - -it only works for modules loaded and unloaded (or devices inserted -and removed) after the kernel has finished booting. Without a database -of events, there is no way the daemon could fully populate -/dev - - -if you add a database to this scheme, the question is then how to -present that database to user-space. If you make it a list of strings -with embedded event codes which are passed through a pipe to the -daemon, then this is only of use to the daemon. I would argue that the -natural way to present this data is via a filesystem (since many of -the events will be of a hierarchical nature), such as devfs. -Presenting the data as a filesystem makes it easy for the user to see -what is available and also makes it easy to write scripts to scan the -"database" - - -the tight binding between device nodes and drivers is no longer -possible (requiring the otherwise perfectly avoidable -table lookups) - - -you cannot catch inode lookup events on /dev which means -that module autoloading requires device nodes to be created. This is a -problem, particularly for drivers where only a few inodes are created -from a potentially large set - - -this technique can't be used when the root FS is mounted -read-only - - - - -Just implement a better scsidev - -This suggestion involves taking the scsidev programme and -extending it to scan for all devices, not just SCSI devices. The -scsidev programme works by scanning /proc/scsi - -Problems: - - -the kernel does not currently provide a list of all devices -available. Not all drivers register entries in /proc or -generate kernel messages - - -there is no uniform mechanism to register devices other than the -devfs API - - -implementing such an API is then the same as the -proposal above - - - - -Put /dev on a ramdisc - -This suggestion involves creating a ramdisc and populating it with -device nodes and then mounting it over /dev. - -Problems: - - - -this doesn't help when mounting the root filesystem, since you -still need a device node to do that - - -if you want to use this technique for the root device node as -well, you need to use initrd. This complicates the booting sequence -and makes it significantly harder to administer and configure. The -initrd is essentially opaque, robbing the system administrator of easy -configuration - - -insufficient information is available to correctly populate the -ramdisc. So we come back to the -proposal above to "solve" this - - -a ramdisc-based solution would take more kernel memory, since the -backing store would be (at best) normal VFS inodes and dentries, which -take 284 bytes and 112 bytes, respectively, for each entry. Compare -that to 72 bytes for devfs - - - - -Do nothing: there's no problem - -Sometimes people can be heard to claim that the existing scheme is -fine. This is what they're ignoring: - - -device number size (8 bits each for major and minor) is a real -limitation, and must be fixed somehow. Systems with large numbers of -SCSI devices, for example, will continue to consume the remaining -unallocated major numbers. USB will also need to push beyond the 8 bit -minor limitation - - -simply increasing the device number size is insufficient. Apart -from causing a lot of pain, it doesn't solve the management issues -of a /dev with thousands or more device nodes - - -ignoring the problem of a huge /dev will not make it go -away, and dismisses the legitimacy of a large number of people who -want a dynamic /dev - - -the standard response then becomes: "write a device management -daemon", which brings us back to the -proposal above - - - - -What I don't like about devfs - -Here are some common complaints about devfs, and some suggestions and -solutions that may make it more palatable for you. I can't please -everybody, but I do try :-) - -I hate the naming scheme - -First, remember that no naming scheme will please everybody. You hate -the scheme, others love it. Who's to say who's right and who's wrong? -Ultimately, the person who writes the code gets to choose, and what -exists now is a combination of the choices made by the -devfs author and the -kernel maintainer (Linus). - -However, not all is lost. If you want to create your own naming -scheme, it is a simple matter to write a standalone script, hack -devfsd, or write a script called by devfsd. You can create whatever -naming scheme you like. - -Further, if you want to remove all traces of the devfs naming scheme -from /dev, you can mount devfs elsewhere (say -/devfs) and populate /dev with links into -/devfs. This population can be automated using devfsd if you -wish. - -You can even use the VFS binding facility to make the links, rather -than using symbolic links. This way, you don't even have to see the -"destination" of these symbolic links. - -Devfs puts policy into the kernel - -There's already policy in the kernel. Device numbers are in fact -policy (why should the kernel dictate what device numbers I use?). -Face it, some policy has to be in the kernel. The real difference -between device names as policy and device numbers as policy is that -no one will use device numbers directly, because device -numbers are devoid of meaning to humans and are ugly. At least with -the devfs device names, (even though you can add your own naming -scheme) some people will use the devfs-supplied names directly. This -offends some people :-) - -Devfs is bloatware - -This is not even remotely true. As shown above, -both code and data size are quite modest. - - -How to report bugs - -If you have (or think you have) a bug with devfs, please follow the -steps below: - - - -make sure you have enabled debugging output when configuring your -kernel. You will need to set (at least) the following config options: - -CONFIG_DEVFS_DEBUG=y -CONFIG_DEBUG_KERNEL=y -CONFIG_DEBUG_SLAB=y - - - -please make sure you have the latest devfs patches applied. The -latest kernel version might not have the latest devfs patches applied -yet (Linus is very busy) - - -save a copy of your complete kernel logs (preferably by -using the dmesg programme) for later inclusion in your bug -report. You may need to use the -s switch to increase the -internal buffer size so you can capture all the boot messages. -Don't edit or trim the dmesg output - - - - -try booting with devfs=dall passed to the kernel boot -command line (read the documentation on your bootloader on how to do -this), and save the result to a file. This may be quite verbose, and -it may overflow the messages buffer, but try to get as much of it as -you can - - -send a copy of your devfsd configuration file(s) - -send the bug report to me first. -Don't expect that I will see it if you post it to the linux-kernel -mailing list. Include all the information listed above, plus -anything else that you think might be relevant. Put the string -devfs somewhere in the subject line, so my mail filters mark -it as urgent - - - - -Here is a general guide on how to ask questions in a way that greatly -improves your chances of getting a reply: - -http://www.tuxedo.org/~esr/faqs/smart-questions.html. If you have -a bug to report, you should also read - -http://www.chiark.greenend.org.uk/~sgtatham/bugs.html. - - -Strange kernel messages - -You may see devfs-related messages in your kernel logs. Below are some -messages and what they mean (and what you should do about them, if -anything). - - - -devfs_register(fred): could not append to parent, err: -17 - -You need to check what the error code means, but usually 17 means -EEXIST. This means that a driver attempted to create an entry -fred in a directory, but there already was an entry with that -name. This is often caused by flawed boot scripts which untar a bunch -of inodes into /dev, as a way to restore permissions. This -message is harmless, as the device nodes will still -provide access to the driver (unless you use the devfs=only -boot option, which is only for dedicated souls:-). If you want to get -rid of these annoying messages, upgrade to devfsd-v1.3.20 and use the -recommended RESTORE directive to restore permissions. - - -devfs_mk_dir(bill): using old entry in dir: c1808724 "" - -This is similar to the message above, except that a driver attempted -to create a directory named bill, and the parent directory -has an entry with the same name. In this case, to ensure that drivers -continue to work properly, the old entry is re-used and given to the -driver. In 2.5 kernels, the driver is given a NULL entry, and thus, -under rare circumstances, may not create the require device nodes. -The solution is the same as above. - - - - - -Compilation problems with devfsd - -Usually, you can compile devfsd just by typing in -make in the source directory, followed by a make -install (as root). Sometimes, you may have problems, particularly -on broken configurations. - - - -error messages relating to DEVFSD_NOTIFY_DELETE - -This happened because you have an ancient set of kernel headers -installed in /usr/include/linux or /usr/src/linux. -Install kernel 2.4.10 or later. You may need to pass the -KERNEL_DIR variable to make (if you did not install -the new kernel sources as /usr/src/linux), or you may copy -the devfs_fs.h file in the kernel source tree into -/usr/include/linux. - - - - ------------------------------------------------------------------------------ - - -Other resources - - - -Douglas Gilbert has written a useful document at - -http://www.torque.net/sg/devfs_scsi.html which -explores the SCSI subsystem and how it interacts with devfs - - -Douglas Gilbert has written another useful document at - -http://www.torque.net/scsi/SCSI-2.4-HOWTO/ which -discusses the Linux SCSI subsystem in 2.4. - - -Johannes Erdfelt has started a discussion paper on Linux and -hot-swap devices, describing what the requirements are for a scalable -solution and how and why he's used devfs+devfsd. Note that this is an -early draft only, available in plain text form at: - -http://johannes.erdfelt.com/hotswap.txt. -Johannes has promised a HTML version will follow. - - -I presented an invited -paper -at the - -2nd Annual Storage Management Workshop held in Miamia, Florida, -U.S.A. in October 2000. - - - - ------------------------------------------------------------------------------ - - -Translations of this document - -This document has been translated into other languages. - - - - -The document master (in English) by rgooch@atnf.csiro.au is -available at - -http://www.atnf.csiro.au/~rgooch/linux/docs/devfs.html - - - -A Korean translation by viatoris@nownuri.net is available at - -http://your.destiny.pe.kr/devfs/devfs.html - - - - ------------------------------------------------------------------------------ -Most flags courtesy of ITA's -Flags of All Countries -used with permission. diff --git a/Documentation/filesystems/devfs/ToDo b/Documentation/filesystems/devfs/ToDo deleted file mode 100644 index afd5a8f2c19..00000000000 --- a/Documentation/filesystems/devfs/ToDo +++ /dev/null @@ -1,40 +0,0 @@ - Device File System (devfs) ToDo List - - Richard Gooch <rgooch@atnf.csiro.au> - - 3-JUL-2000 - -This is a list of things to be done for better devfs support in the -Linux kernel. If you'd like to contribute to the devfs, please have a -look at this list for anything that is unallocated. Also, if there are -items missing (surely), please contact me so I can add them to the -list (preferably with your name attached to them:-). - - -- >256 ptys - Thanks to C. Scott Ananian <cananian@alumni.princeton.edu> - -- Amiga floppy driver (drivers/block/amiflop.c) - -- Atari floppy driver (drivers/block/ataflop.c) - -- SWIM3 (Super Woz Integrated Machine 3) floppy driver (drivers/block/swim3.c) - -- Amiga ZorroII ramdisc driver (drivers/block/z2ram.c) - -- Parallel port ATAPI CD-ROM (drivers/block/paride/pcd.c) - -- Parallel port ATAPI floppy (drivers/block/paride/pf.c) - -- AP1000 block driver (drivers/ap1000/ap.c, drivers/ap1000/ddv.c) - -- Archimedes floppy (drivers/acorn/block/fd1772.c) - -- MFM hard drive (drivers/acorn/block/mfmhd.c) - -- I2O block device (drivers/message/i2o/i2o_block.c) - -- ST-RAM device (arch/m68k/atari/stram.c) - -- Raw devices - diff --git a/Documentation/filesystems/devfs/boot-options b/Documentation/filesystems/devfs/boot-options deleted file mode 100644 index df3d33b03e0..00000000000 --- a/Documentation/filesystems/devfs/boot-options +++ /dev/null @@ -1,65 +0,0 @@ -/* -*- auto-fill -*- */ - - Device File System (devfs) Boot Options - - Richard Gooch <rgooch@atnf.csiro.au> - - 18-AUG-2001 - - -When CONFIG_DEVFS_DEBUG is enabled, you can pass several boot options -to the kernel to debug devfs. The boot options are prefixed by -"devfs=", and are separated by commas. Spaces are not allowed. The -syntax looks like this: - -devfs=<option1>,<option2>,<option3> - -and so on. For example, if you wanted to turn on debugging for module -load requests and device registration, you would do: - -devfs=dmod,dreg - -You may prefix "no" to any option. This will invert the option. - - -Debugging Options -================= - -These requires CONFIG_DEVFS_DEBUG to be enabled. -Note that all debugging options have 'd' as the first character. By -default all options are off. All debugging output is sent to the -kernel logs. The debugging options do not take effect until the devfs -version message appears (just prior to the root filesystem being -mounted). - -These are the options: - -dmod print module load requests to <request_module> - -dreg print device register requests to <devfs_register> - -dunreg print device unregister requests to <devfs_unregister> - -dchange print device change requests to <devfs_set_flags> - -dilookup print inode lookup requests - -diget print VFS inode allocations - -diunlink print inode unlinks - -dichange print inode changes - -dimknod print calls to mknod(2) - -dall some debugging turned on - - -Other Options -============= - -These control the default behaviour of devfs. The options are: - -mount mount devfs onto /dev at boot time - -only disable non-devfs device nodes for devfs-capable drivers diff --git a/Documentation/initrd.txt b/Documentation/initrd.txt index 7de1c80cd71..b1b6440237a 100644 --- a/Documentation/initrd.txt +++ b/Documentation/initrd.txt @@ -67,8 +67,7 @@ initrd adds the following new options: as the last process has closed it, all data is freed and /dev/initrd can't be opened anymore. - root=/dev/ram0 (without devfs) - root=/dev/rd/0 (with devfs) + root=/dev/ram0 initrd is mounted as root, and the normal boot procedure is followed, with the RAM disk still mounted as root. @@ -90,8 +89,7 @@ you're building an install floppy), the root file system creation procedure should create the /initrd directory. If initrd will not be mounted in some cases, its content is still -accessible if the following device has been created (note that this -does not work if using devfs): +accessible if the following device has been created: # mknod /dev/initrd b 1 250 # chmod 400 /dev/initrd @@ -119,8 +117,7 @@ We'll describe the loopback device method: (if space is critical, you may want to use the Minix FS instead of Ext2) 3) mount the file system, e.g. # mount -t ext2 -o loop initrd /mnt - 4) create the console device (not necessary if using devfs, but it can't - hurt to do it anyway): + 4) create the console device: # mkdir /mnt/dev # mknod /mnt/dev/console c 5 1 5) copy all the files that are needed to properly use the initrd @@ -152,12 +149,7 @@ have to be given: root=/dev/ram0 init=/linuxrc rw -if not using devfs, or - - root=/dev/rd/0 init=/linuxrc rw - -if using devfs. (rw is only necessary if writing to the initrd file -system.) +(rw is only necessary if writing to the initrd file system.) With LOADLIN, you simply execute @@ -217,9 +209,9 @@ following command: # exec chroot . what-follows <dev/console >dev/console 2>&1 Where what-follows is a program under the new root, e.g. /sbin/init -If the new root file system will be used with devfs and has no valid -/dev directory, devfs must be mounted before invoking chroot in order to -provide /dev/console. +If the new root file system will be used with udev and has no valid +/dev directory, udev must be initialized before invoking chroot in order +to provide /dev/console. Note: implementation details of pivot_root may change with time. In order to ensure compatibility, the following points should be observed: @@ -236,7 +228,7 @@ Now, the initrd can be unmounted and the memory allocated by the RAM disk can be freed: # umount /initrd -# blockdev --flushbufs /dev/ram0 # /dev/rd/0 if using devfs +# blockdev --flushbufs /dev/ram0 It is also possible to use initrd with an NFS-mounted root, see the pivot_root(8) man page for details. diff --git a/Documentation/ioctl-number.txt b/Documentation/ioctl-number.txt index 1543802ef53..edc04d74ae2 100644 --- a/Documentation/ioctl-number.txt +++ b/Documentation/ioctl-number.txt @@ -119,7 +119,6 @@ Code Seq# Include File Comments 'c' 00-7F linux/comstats.h conflict! 'c' 00-7F linux/coda.h conflict! 'd' 00-FF linux/char/drm/drm/h conflict! -'d' 00-1F linux/devfs_fs.h conflict! 'd' 00-DF linux/video_decoder.h conflict! 'd' F0-FF linux/digi1.h 'e' all linux/digi1.h conflict! diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 25f8d20dac5..86e9282d1c2 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -35,7 +35,6 @@ parameter is applicable: APM Advanced Power Management support is enabled. AX25 Appropriate AX.25 support is enabled. CD Appropriate CD support is enabled. - DEVFS devfs support is enabled. DRM Direct Rendering Management support is enabled. EDD BIOS Enhanced Disk Drive Services (EDD) is enabled EFI EFI Partitioning (GPT) is enabled @@ -440,9 +439,6 @@ running once the system is up. Format: <area>[,<node>] See also Documentation/networking/decnet.txt. - devfs= [DEVFS] - See Documentation/filesystems/devfs/boot-options. - dhash_entries= [KNL] Set number of hash buckets for dentry cache. diff --git a/arch/cris/arch-v10/kernel/debugport.c b/arch/cris/arch-v10/kernel/debugport.c index f3a85b77c17..dde813e1629 100644 --- a/arch/cris/arch-v10/kernel/debugport.c +++ b/arch/cris/arch-v10/kernel/debugport.c @@ -541,7 +541,7 @@ init_dummy_console(void) dummy_driver.init_termios = tty_std_termios; dummy_driver.init_termios.c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL; /* is normally B9600 default... */ - dummy_driver.flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS; + dummy_driver.flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; dummy_driver.open = dummy_open; dummy_driver.close = dummy_close; diff --git a/arch/cris/arch-v32/kernel/debugport.c b/arch/cris/arch-v32/kernel/debugport.c index ffc1ebf2dfe..3dc587e6201 100644 --- a/arch/cris/arch-v32/kernel/debugport.c +++ b/arch/cris/arch-v32/kernel/debugport.c @@ -353,7 +353,7 @@ init_dummy_console(void) dummy_driver.init_termios = tty_std_termios; dummy_driver.init_termios.c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL; /* is normally B9600 default... */ - dummy_driver.flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS; + dummy_driver.flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; dummy_driver.open = dummy_open; dummy_driver.close = dummy_close; diff --git a/arch/i386/kernel/microcode.c b/arch/i386/kernel/microcode.c index 0a865889b2a..40b44cc0d14 100644 --- a/arch/i386/kernel/microcode.c +++ b/arch/i386/kernel/microcode.c @@ -493,7 +493,6 @@ static struct file_operations microcode_fops = { static struct miscdevice microcode_dev = { .minor = MICROCODE_MINOR, .name = "microcode", - .devfs_name = "cpu/microcode", .fops = µcode_fops, }; diff --git a/arch/ppc/4xx_io/serial_sicc.c b/arch/ppc/4xx_io/serial_sicc.c index 98b25fa0049..1e113d0f59b 100644 --- a/arch/ppc/4xx_io/serial_sicc.c +++ b/arch/ppc/4xx_io/serial_sicc.c @@ -1758,7 +1758,7 @@ int __init siccuart_init(void) siccnormal_driver->subtype = SERIAL_TYPE_NORMAL; siccnormal_driver->init_termios = tty_std_termios; siccnormal_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; - siccnormal_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS; + siccnormal_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; tty_set_operations(siccnormal_driver, &sicc_ops); if (tty_register_driver(siccnormal_driver)) diff --git a/arch/sh/kernel/cpu/sh4/sq.c b/arch/sh/kernel/cpu/sh4/sq.c index 8437ea7430f..83a4f91bce5 100644 --- a/arch/sh/kernel/cpu/sh4/sq.c +++ b/arch/sh/kernel/cpu/sh4/sq.c @@ -417,7 +417,6 @@ static struct file_operations sq_fops = { static struct miscdevice sq_dev = { .minor = STORE_QUEUE_MINOR, .name = "sq", - .devfs_name = "cpu/sq", .fops = &sq_fops, }; diff --git a/arch/sparc64/solaris/socksys.c b/arch/sparc64/solaris/socksys.c index fc6669e8dde..bc3df95bc05 100644 --- a/arch/sparc64/solaris/socksys.c +++ b/arch/sparc64/solaris/socksys.c @@ -26,7 +26,6 @@ #include <linux/slab.h> #include <linux/syscalls.h> #include <linux/in.h> -#include <linux/devfs_fs_kernel.h> #include <net/sock.h> @@ -190,8 +189,6 @@ init_socksys(void) return ret; } - devfs_mk_cdev(MKDEV(30, 0), S_IFCHR|S_IRUSR|S_IWUSR, "socksys"); - file = fcheck(ret); /* N.B. Is this valid? Suppose the f_ops are in a module ... */ socksys_file_ops = *file->f_op; @@ -207,5 +204,4 @@ cleanup_socksys(void) { if (unregister_chrdev(30, "socksys")) printk ("Couldn't unregister socksys character device\n"); - devfs_remove ("socksys"); } diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c index 6c2d4ccaf20..5ca57ca3371 100644 --- a/arch/um/drivers/line.c +++ b/arch/um/drivers/line.c @@ -8,7 +8,6 @@ #include "linux/list.h" #include "linux/kd.h" #include "linux/interrupt.h" -#include "linux/devfs_fs_kernel.h" #include "asm/uaccess.h" #include "chan_kern.h" #include "irq_user.h" @@ -655,7 +654,6 @@ struct tty_driver *line_register_devfs(struct lines *set, driver->driver_name = line_driver->name; driver->name = line_driver->device_name; - driver->devfs_name = line_driver->devfs_name; driver->major = line_driver->major; driver->minor_start = line_driver->minor_start; driver->type = line_driver->type; diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c index a4d6415bc8c..6dafd6fbfda 100644 --- a/arch/um/drivers/ssl.c +++ b/arch/um/drivers/ssl.c @@ -54,7 +54,6 @@ static int ssl_remove(int n); static struct line_driver driver = { .name = "UML serial line", .device_name = "ttyS", - .devfs_name = "tts/", .major = TTY_MAJOR, .minor_start = 64, .type = TTY_DRIVER_TYPE_SERIAL, diff --git a/arch/um/drivers/stdio_console.c b/arch/um/drivers/stdio_console.c index 61db8b2fc83..856f568c268 100644 --- a/arch/um/drivers/stdio_console.c +++ b/arch/um/drivers/stdio_console.c @@ -60,7 +60,6 @@ static int con_remove(int n); static struct line_driver driver = { .name = "UML console", .device_name = "tty", - .devfs_name = "vc/", .major = TTY_MAJOR, .minor_start = 0, .type = TTY_DRIVER_TYPE_CONSOLE, diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c index 290cec6d69e..0345e255124 100644 --- a/arch/um/drivers/ubd_kern.c +++ b/arch/um/drivers/ubd_kern.c @@ -25,7 +25,6 @@ #include "linux/blkdev.h" #include "linux/hdreg.h" #include "linux/init.h" -#include "linux/devfs_fs_kernel.h" #include "linux/cdrom.h" #include "linux/proc_fs.h" #include "linux/ctype.h" @@ -628,7 +627,6 @@ static int ubd_new_disk(int major, u64 size, int unit, { struct gendisk *disk; - char from[sizeof("ubd/nnnnn\0")], to[sizeof("discnnnnn/disc\0")]; int err; disk = alloc_disk(1 << UBD_SHIFT); @@ -639,20 +637,10 @@ static int ubd_new_disk(int major, u64 size, int unit, disk->first_minor = unit << UBD_SHIFT; disk->fops = &ubd_blops; set_capacity(disk, size / 512); - if(major == MAJOR_NR){ + if(major == MAJOR_NR) sprintf(disk->disk_name, "ubd%c", 'a' + unit); - sprintf(disk->devfs_name, "ubd/disc%d", unit); - sprintf(from, "ubd/%d", unit); - sprintf(to, "disc%d/disc", unit); - err = devfs_mk_symlink(from, to); - if(err) - printk("ubd_new_disk failed to make link from %s to " - "%s, error = %d\n", from, to, err); - } - else { + else sprintf(disk->disk_name, "ubd_fake%d", unit); - sprintf(disk->devfs_name, "ubd_fake/disc%d", unit); - } /* sysfs register (not for ide fake devices) */ if (major == MAJOR_NR) { @@ -841,7 +829,6 @@ int ubd_init(void) { int i; - devfs_mk_dir("ubd"); if (register_blkdev(MAJOR_NR, "ubd")) return -1; @@ -855,7 +842,6 @@ int ubd_init(void) char name[sizeof("ubd_nnn\0")]; snprintf(name, sizeof(name), "ubd_%d", fake_major); - devfs_mk_dir(name); if (register_blkdev(fake_major, "ubd")) return -1; } diff --git a/arch/um/include/line.h b/arch/um/include/line.h index 6ac0f8252e2..27bf2f6fbc0 100644 --- a/arch/um/include/line.h +++ b/arch/um/include/line.h @@ -17,7 +17,6 @@ struct line_driver { char *name; char *device_name; - char *devfs_name; short major; short minor_start; short type; diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c index dd8a1501142..50ca1aa4ee3 100644 --- a/drivers/block/DAC960.c +++ b/drivers/block/DAC960.c @@ -2530,7 +2530,6 @@ static boolean DAC960_RegisterBlockDevice(DAC960_Controller_T *Controller) blk_queue_max_sectors(RequestQueue, Controller->MaxBlocksPerCommand); disk->queue = RequestQueue; sprintf(disk->disk_name, "rd/c%dd%d", Controller->ControllerNumber, n); - sprintf(disk->devfs_name, "rd/host%d/target%d", Controller->ControllerNumber, n); disk->major = MajorNumber; disk->first_minor = n << DAC960_MaxPartitionsBits; disk->fops = &DAC960_BlockDeviceOperations; diff --git a/drivers/block/acsi.c b/drivers/block/acsi.c index 196c0ec9cd5..a317e430395 100644 --- a/drivers/block/acsi.c +++ b/drivers/block/acsi.c @@ -1732,13 +1732,10 @@ int acsi_init( void ) struct gendisk *disk = acsi_gendisk[i]; sprintf(disk->disk_name, "ad%c", 'a'+i); aip = &acsi_info[NDevices]; - sprintf(disk->devfs_name, "ad/target%d/lun%d", aip->target, aip->lun); disk->major = ACSI_MAJOR; disk->first_minor = i << 4; - if (acsi_info[i].type != HARDDISK) { + if (acsi_info[i].type != HARDDISK) disk->minors = 1; - strcat(disk->devfs_name, "/disc"); - } disk->fops = &acsi_fops; disk->private_data = &acsi_info[i]; set_capacity(disk, acsi_info[i].size); diff --git a/drivers/block/acsi_slm.c b/drivers/block/acsi_slm.c index 4cb9c133628..4030a8fd118 100644 --- a/drivers/block/acsi_slm.c +++ b/drivers/block/acsi_slm.c @@ -65,7 +65,6 @@ not be guaranteed. There are several ways to assure this: #include <linux/time.h> #include <linux/mm.h> #include <linux/slab.h> -#include <linux/devfs_fs_kernel.h> #include <linux/smp_lock.h> #include <asm/pgtable.h> @@ -1005,11 +1004,6 @@ int slm_init( void ) BufferP = SLMBuffer; SLMState = IDLE; - devfs_mk_dir("slm"); - for (i = 0; i < MAX_SLM; i++) { - devfs_mk_cdev(MKDEV(ACSI_MAJOR, i), - S_IFCHR|S_IRUSR|S_IWUSR, "slm/%d", i); - } return 0; } @@ -1032,10 +1026,6 @@ int init_module(void) void cleanup_module(void) { - int i; - for (i = 0; i < MAX_SLM; i++) - devfs_remove("slm/%d", i); - devfs_remove("slm"); if (unregister_chrdev( ACSI_MAJOR, "slm" ) != 0) printk( KERN_ERR "acsi_slm: cleanup_module failed\n"); atari_stram_free( SLMBuffer ); diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 39b0f53186e..05fb08312c0 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -3248,7 +3248,6 @@ static int __devinit cciss_init_one(struct pci_dev *pdev, q->queuedata = hba[i]; sprintf(disk->disk_name, "cciss/c%dd%d", i, j); - sprintf(disk->devfs_name, "cciss/host%d/target%d", i, j); disk->major = hba[i]->major; disk->first_minor = j << NWD_SHIFT; disk->fops = &cciss_fops; diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c index 5eb6fb7b5cf..bfd245df0a8 100644 --- a/drivers/block/cpqarray.c +++ b/drivers/block/cpqarray.c @@ -33,7 +33,6 @@ #include <linux/blkpg.h> #include <linux/timer.h> #include <linux/proc_fs.h> -#include <linux/devfs_fs_kernel.h> #include <linux/init.h> #include <linux/hdreg.h> #include <linux/spinlock.h> @@ -348,7 +347,6 @@ static void __devexit cpqarray_remove_one(int i) for(j = 0; j < NWD; j++) { if (ida_gendisk[i][j]->flags & GENHD_FL_UP) del_gendisk(ida_gendisk[i][j]); - devfs_remove("ida/c%dd%d",i,j); put_disk(ida_gendisk[i][j]); } blk_cleanup_queue(hba[i]->queue); @@ -1807,8 +1805,6 @@ static void getgeometry(int ctlr) } - sprintf(disk->devfs_name, "ida/c%dd%d", ctlr, log_unit); - info_p->phys_drives = sense_config_buf->ctlr_phys_drv; info_p->drv_assign_map @@ -1844,7 +1840,6 @@ static void __exit cpqarray_exit(void) } } - devfs_remove("ida"); remove_proc_entry("cpqarray", proc_root_driver); } diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index dff1e67b1dd..0242cbb86a8 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -177,7 +177,6 @@ static int print_unex = 1; #include <linux/ioport.h> #include <linux/interrupt.h> #include <linux/init.h> -#include <linux/devfs_fs_kernel.h> #include <linux/platform_device.h> #include <linux/buffer_head.h> /* for invalidate_buffers() */ #include <linux/mutex.h> @@ -224,7 +223,6 @@ static struct completion device_release; static unsigned short virtual_dma_port = 0x3f0; irqreturn_t floppy_interrupt(int irq, void *dev_id, struct pt_regs *regs); static int set_dor(int fdc, char mask, char data); -static void register_devfs_entries(int drive) __init; #define K_64 0x10000 /* 64KB */ @@ -3676,7 +3674,6 @@ static void __init config_types(void) first = 0; } printk("%s fd%d is %s", prepend, drive, name); - register_devfs_entries(drive); } *UDP = *params; } @@ -3954,37 +3951,6 @@ static struct block_device_operations floppy_fops = { .media_changed = check_floppy_change, .revalidate_disk = floppy_revalidate, }; -static char *table[] = { - "", "d360", "h1200", "u360", "u720", "h360", "h720", - "u1440", "u2880", "CompaQ", "h1440", "u1680", "h410", - "u820", "h1476", "u1722", "h420", "u830", "h1494", "u1743", - "h880", "u1040", "u1120", "h1600", "u1760", "u1920", - "u3200", "u3520", "u3840", "u1840", "u800", "u1600", - NULL -}; -static int t360[] = { 1, 0 }, - t1200[] = { 2, 5, 6, 10, 12, 14, 16, 18, 20, 23, 0 }, - t3in[] = { 8, 9, 26, 27, 28, 7, 11, 15, 19, 24, 25, 29, 31, 3, 4, 13, - 17, 21, 22, 30, 0 }; -static int *table_sup[] = - { NULL, t360, t1200, t3in + 5 + 8, t3in + 5, t3in, t3in }; - -static void __init register_devfs_entries(int drive) -{ - int base_minor = (drive < 4) ? drive : (124 + drive); - - if (UDP->cmos < ARRAY_SIZE(default_drive_params)) { - int i = 0; - do { - int minor = base_minor + (table_sup[UDP->cmos][i] << 2); - - devfs_mk_bdev(MKDEV(FLOPPY_MAJOR, minor), - S_IFBLK | S_IRUSR | S_IWUSR | S_IRGRP | - S_IWGRP, "floppy/%d%s", drive, - table[table_sup[UDP->cmos][i]]); - } while (table_sup[UDP->cmos][i++]); - } -} /* * Floppy Driver initialization @@ -4261,11 +4227,9 @@ static int __init floppy_init(void) motor_off_timer[dr].function = motor_off_callback; } - devfs_mk_dir("floppy"); - err = register_blkdev(FLOPPY_MAJOR, "fd"); if (err) - goto out_devfs_remove; + goto out_put_disk; floppy_queue = blk_init_queue(do_fd_request, &floppy_lock); if (!floppy_queue) { @@ -4424,8 +4388,6 @@ out_unreg_region: blk_cleanup_queue(floppy_queue); out_unreg_blkdev: unregister_blkdev(FLOPPY_MAJOR, "fd"); -out_devfs_remove: - devfs_remove("floppy"); out_put_disk: while (dr--) { del_timer(&motor_off_timer[dr]); @@ -4586,19 +4548,6 @@ static void floppy_release_irq_and_dma(void) static char *floppy; -static void unregister_devfs_entries(int drive) -{ - int i; - - if (UDP->cmos < ARRAY_SIZE(default_drive_params)) { - i = 0; - do { - devfs_remove("floppy/%d%s", drive, - table[table_sup[UDP->cmos][i]]); - } while (table_sup[UDP->cmos][i++]); - } -} - static void __init parse_floppy_cfg_string(char *cfg) { char *ptr; @@ -4635,13 +4584,11 @@ void cleanup_module(void) if ((allowed_drive_mask & (1 << drive)) && fdc_state[FDC(drive)].version != FDC_NONE) { del_gendisk(disks[drive]); - unregister_devfs_entries(drive); device_remove_file(&floppy_device[drive].dev, &dev_attr_cmos); platform_device_unregister(&floppy_device[drive]); } put_disk(disks[drive]); } - devfs_remove("floppy"); del_timer_sync(&fd_timeout); del_timer_sync(&fd_timer); diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 18dd026f470..013c5daddb0 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -63,7 +63,6 @@ #include <linux/blkdev.h> #include <linux/blkpg.h> #include <linux/init.h> -#include <linux/devfs_fs_kernel.h> #include <linux/smp_lock.h> #include <linux/swap.h> #include <linux/slab.h> @@ -1277,8 +1276,6 @@ static int __init loop_init(void) goto out_mem3; } - devfs_mk_dir("loop"); - for (i = 0; i < max_loop; i++) { struct loop_device *lo = &loop_dev[i]; struct gendisk *disk = disks[i]; @@ -1296,7 +1293,6 @@ static int __init loop_init(void) disk->first_minor = i; disk->fops = &lo_fops; sprintf(disk->disk_name, "loop%d", i); - sprintf(disk->devfs_name, "loop/%d", i); disk->private_data = lo; disk->queue = lo->lo_queue; } @@ -1310,7 +1306,6 @@ static int __init loop_init(void) out_mem4: while (i--) blk_cleanup_queue(loop_dev[i].lo_queue); - devfs_remove("loop"); i = max_loop; out_mem3: while (i--) @@ -1333,7 +1328,6 @@ static void loop_exit(void) blk_cleanup_queue(loop_dev[i].lo_queue); put_disk(disks[i]); } - devfs_remove("loop"); if (unregister_blkdev(LOOP_MAJOR, "loop")) printk(KERN_WARNING "loop: cannot unregister blkdev\n"); diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 7f554f2ed07..39662f0c9cc 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -29,8 +29,6 @@ #include <linux/kernel.h> #include <net/sock.h> -#include <linux/devfs_fs_kernel.h> - #include <asm/uaccess.h> #include <asm/system.h> #include <asm/types.h> @@ -642,7 +640,6 @@ static int __init nbd_init(void) printk(KERN_INFO "nbd: registered device at major %d\n", NBD_MAJOR); dprintk(DBG_INIT, "nbd: debugflags=0x%x\n", debugflags); - devfs_mk_dir("nbd"); for (i = 0; i < nbds_max; i++) { struct gendisk *disk = nbd_dev[i].disk; nbd_dev[i].file = NULL; @@ -660,7 +657,6 @@ static int __init nbd_init(void) disk->private_data = &nbd_dev[i]; disk->flags |= GENHD_FL_SUPPRESS_PARTITION_INFO; sprintf(disk->disk_name, "nbd%d", i); - sprintf(disk->devfs_name, "nbd/%d", i); set_capacity(disk, 0x7ffffc00ULL << 1); /* 2 TB */ add_disk(disk); } @@ -686,7 +682,6 @@ static void __exit nbd_cleanup(void) put_disk(disk); } } - devfs_remove("nbd"); unregister_blkdev(NBD_MAJOR, "nbd"); printk(KERN_INFO "nbd: unregistered device at major %d\n", NBD_MAJOR); } diff --git a/drivers/block/paride/pg.c b/drivers/block/paride/pg.c index 79b86825403..13f998aa1cd 100644 --- a/drivers/block/paride/pg.c +++ b/drivers/block/paride/pg.c @@ -156,7 +156,6 @@ enum {D_PRT, D_PRO, D_UNI, D_MOD, D_SLV, D_DLY}; #include <linux/module.h> #include <linux/init.h> #include <linux/fs.h> -#include <linux/devfs_fs_kernel.h> #include <linux/delay.h> #include <linux/slab.h> #include <linux/mtio.h> @@ -674,25 +673,15 @@ static int __init pg_init(void) err = PTR_ERR(pg_class); goto out_chrdev; } - devfs_mk_dir("pg"); for (unit = 0; unit < PG_UNITS; unit++) { struct pg *dev = &devices[unit]; - if (dev->present) { + if (dev->present) class_device_create(pg_class, NULL, MKDEV(major, unit), NULL, "pg%u", unit); - err = devfs_mk_cdev(MKDEV(major, unit), - S_IFCHR | S_IRUSR | S_IWUSR, "pg/%u", - unit); - if (err) - goto out_class; - } } err = 0; goto out; -out_class: - class_device_destroy(pg_class, MKDEV(major, unit)); - class_destroy(pg_class); out_chrdev: unregister_chrdev(major, "pg"); out: @@ -705,13 +694,10 @@ static void __exit pg_exit(void) for (unit = 0; unit < PG_UNITS; unit++) { struct pg *dev = &devices[unit]; - if (dev->present) { + if (dev->present) class_device_destroy(pg_class, MKDEV(major, unit)); - devfs_remove("pg/%u", unit); - } } class_destroy(pg_class); - devfs_remove("pg"); unregister_chrdev(major, name); for (unit = 0; unit < PG_UNITS; unit++) { diff --git a/drivers/block/paride/pt.c b/drivers/block/paride/pt.c index d2013d36240..35fb2663672 100644 --- a/drivers/block/paride/pt.c +++ b/drivers/block/paride/pt.c @@ -141,7 +141,6 @@ static int (*drives[4])[6] = {&drive0, &drive1, &drive2, &drive3}; #include <linux/module.h> #include <linux/init.h> #include <linux/fs.h> -#include <linux/devfs_fs_kernel.h> #include <linux/delay.h> #include <linux/slab.h> #include <linux/mtio.h> @@ -971,32 +970,15 @@ static int __init pt_init(void) goto out_chrdev; } - devfs_mk_dir("pt"); for (unit = 0; unit < PT_UNITS; unit++) if (pt[unit].present) { class_device_create(pt_class, NULL, MKDEV(major, unit), NULL, "pt%d", unit); - err = devfs_mk_cdev(MKDEV(major, unit), - S_IFCHR | S_IRUSR | S_IWUSR, - "pt/%d", unit); - if (err) { - class_device_destroy(pt_class, MKDEV(major, unit)); - goto out_class; - } class_device_create(pt_class, NULL, MKDEV(major, unit + 128), NULL, "pt%dn", unit); - err = devfs_mk_cdev(MKDEV(major, unit + 128), - S_IFCHR | S_IRUSR | S_IWUSR, - "pt/%dn", unit); - if (err) { - class_device_destroy(pt_class, MKDEV(major, unit + 128)); - goto out_class; - } } goto out; -out_class: - class_destroy(pt_class); out_chrdev: unregister_chrdev(major, "pt"); out: @@ -1009,12 +991,9 @@ static void __exit pt_exit(void) for (unit = 0; unit < PT_UNITS; unit++) if (pt[unit].present) { class_device_destroy(pt_class, MKDEV(major, unit)); - devfs_remove("pt/%d", unit); class_device_destroy(pt_class, MKDEV(major, unit + 128)); - devfs_remove("pt/%dn", unit); } class_destroy(pt_class); - devfs_remove("pt"); unregister_chrdev(major, name); for (unit = 0; unit < PT_UNITS; unit++) if (pt[unit].present) diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index a04f60693c3..3e4cce5e473 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -2612,7 +2612,6 @@ static struct file_operations pkt_ctl_fops = { static struct miscdevice pkt_misc = { .minor = MISC_DYNAMIC_MINOR, .name = "pktcdvd", - .devfs_name = "pktcdvd/control", .fops = &pkt_ctl_fops }; diff --git a/drivers/block/ps2esdi.c b/drivers/block/ps2esdi.c index bea75f2cb21..a729013a397 100644 --- a/drivers/block/ps2esdi.c +++ b/drivers/block/ps2esdi.c @@ -421,7 +421,6 @@ static int __init ps2esdi_geninit(void) disk->major = PS2ESDI_MAJOR; disk->first_minor = i<<6; sprintf(disk->disk_name, "ed%c", 'a'+i); - sprintf(disk->devfs_name, "ed/target%d", i); disk->fops = &ps2esdi_fops; ps2esdi_gendisk[i] = disk; } diff --git a/drivers/block/rd.c b/drivers/block/rd.c index 0378da04cfa..a9e1c2524c2 100644 --- a/drivers/block/rd.c +++ b/drivers/block/rd.c @@ -50,7 +50,6 @@ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> -#include <linux/devfs_fs_kernel.h> #include <linux/pagemap.h> #include <linux/blkdev.h> #include <linux/genhd.h> @@ -412,7 +411,6 @@ static void __exit rd_cleanup(void) put_disk(rd_disks[i]); blk_cleanup_queue(rd_queue[i]); } - devfs_remove("rd"); unregister_blkdev(RAMDISK_MAJOR, "ramdisk"); } @@ -442,8 +440,6 @@ static int __init rd_init(void) goto out; } - devfs_mk_dir("rd"); - for (i = 0; i < CONFIG_BLK_DEV_RAM_COUNT; i++) { struct gendisk *disk = rd_disks[i]; @@ -461,7 +457,6 @@ static int __init rd_init(void) disk->queue = rd_queue[i]; disk->flags |= GENHD_FL_SUPPRESS_PARTITION_INFO; sprintf(disk->disk_name, "ram%d", i); - sprintf(disk->devfs_name, "rd/%d", i); set_capacity(disk, rd_size * 2); add_disk(rd_disks[i]); } diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c index 01f042f6f1c..628877945f9 100644 --- a/drivers/block/swim3.c +++ b/drivers/block/swim3.c @@ -25,7 +25,6 @@ #include <linux/fd.h> #include <linux/ioctl.h> #include <linux/blkdev.h> -#include <linux/devfs_fs_kernel.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/spinlock.h> @@ -1019,8 +1018,6 @@ int swim3_init(void) int err = -ENOMEM; int i; - devfs_mk_dir("floppy"); - swim = find_devices("floppy"); while (swim && (floppy_count < MAX_FLOPPIES)) { @@ -1064,7 +1061,6 @@ int swim3_init(void) disk->queue = swim3_queue; disk->flags |= GENHD_FL_REMOVABLE; sprintf(disk->disk_name, "fd%d", i); - sprintf(disk->devfs_name, "floppy/%d", i); set_capacity(disk, 2880); add_disk(disk); } diff --git a/drivers/block/sx8.c b/drivers/block/sx8.c index 8144ce9f4df..10a4aa5fb54 100644 --- a/drivers/block/sx8.c +++ b/drivers/block/sx8.c @@ -18,7 +18,6 @@ #include <linux/spinlock.h> #include <linux/blkdev.h> #include <linux/sched.h> -#include <linux/devfs_fs_kernel.h> #include <linux/interrupt.h> #include <linux/compiler.h> #include <linux/workqueue.h> @@ -1510,7 +1509,6 @@ static int carm_init_disks(struct carm_host *host) port->disk = disk; sprintf(disk->disk_name, DRV_NAME "/%u", (unsigned int) (host->id * CARM_MAX_PORTS) + i); - sprintf(disk->devfs_name, DRV_NAME "/%u_%u", host->id, i); disk->major = host->major; disk->first_minor = i * CARM_MINORS_PER_MAJOR; disk->fops = &carm_bd_ops; @@ -1672,8 +1670,6 @@ static int carm_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) if (host->flags & FL_DYN_MAJOR) host->major = rc; - devfs_mk_dir(DRV_NAME); - rc = carm_init_disks(host); if (rc) goto err_out_blkdev_disks; @@ -1739,7 +1735,6 @@ static void carm_remove_one (struct pci_dev *pdev) free_irq(pdev->irq, host); carm_free_disks(host); - devfs_remove(DRV_NAME); unregister_blkdev(host->major, host->name); if (host->major == 160) clear_bit(0, &carm_major_alloc); diff --git a/drivers/block/ub.c b/drivers/block/ub.c index 60e9a9457c6..d62b49fbf10 100644 --- a/drivers/block/ub.c +++ b/drivers/block/ub.c @@ -24,12 +24,10 @@ #include <linux/usb.h> #include <linux/usb_usual.h> #include <linux/blkdev.h> -#include <linux/devfs_fs_kernel.h> #include <linux/timer.h> #include <scsi/scsi.h> #define DRV_NAME "ub" -#define DEVFS_NAME DRV_NAME #define UB_MAJOR 180 @@ -2291,7 +2289,6 @@ static int ub_probe_lun(struct ub_dev *sc, int lnum) goto err_diskalloc; sprintf(disk->disk_name, DRV_NAME "%c", lun->id + 'a'); - sprintf(disk->devfs_name, DEVFS_NAME "/%c", lun->id + 'a'); disk->major = UB_MAJOR; disk->first_minor = lun->id * UB_PARTS_PER_LUN; disk->fops = &ub_bd_fops; @@ -2445,7 +2442,6 @@ static int __init ub_init(void) if ((rc = register_blkdev(UB_MAJOR, DRV_NAME)) != 0) goto err_regblkdev; - devfs_mk_dir(DEVFS_NAME); if ((rc = usb_register(&ub_driver)) != 0) goto err_register; @@ -2454,7 +2450,6 @@ static int __init ub_init(void) return 0; err_register: - devfs_remove(DEVFS_NAME); unregister_blkdev(UB_MAJOR, DRV_NAME); err_regblkdev: return rc; @@ -2464,7 +2459,6 @@ static void __exit ub_exit(void) { usb_deregister(&ub_driver); - devfs_remove(DEVFS_NAME); unregister_blkdev(UB_MAJOR, DRV_NAME); usb_usual_clear_present(USB_US_TYPE_UB); } diff --git a/drivers/block/umem.c b/drivers/block/umem.c index f7d4c65a7b8..585197b95af 100644 --- a/drivers/block/umem.c +++ b/drivers/block/umem.c @@ -1192,7 +1192,6 @@ static int __init mm_init(void) for (i = 0; i < num_cards; i++) { struct gendisk *disk = mm_gendisk[i]; sprintf(disk->disk_name, "umem%c", 'a'+i); - sprintf(disk->devfs_name, "umem/card%d", i); spin_lock_init(&cards[i].lock); disk->major = major_nr; disk->first_minor = i << MM_SHIFT; diff --git a/drivers/block/viodasd.c b/drivers/block/viodasd.c index b0df4f5ab97..ec5a1b90a0a 100644 --- a/drivers/block/viodasd.c +++ b/drivers/block/viodasd.c @@ -59,7 +59,6 @@ MODULE_LICENSE("GPL"); * numbers 0-255 we get a maximum of 32 disks. */ #define VIOD_GENHD_NAME "iseries/vd" -#define VIOD_GENHD_DEVFS_NAME "iseries/disc" #define VIOD_VERS "1.64" @@ -523,8 +522,6 @@ retry: else snprintf(g->disk_name, sizeof(g->disk_name), VIOD_GENHD_NAME "%c", 'a' + (dev_no % 26)); - snprintf(g->devfs_name, sizeof(g->devfs_name), - "%s%d", VIOD_GENHD_DEVFS_NAME, dev_no); g->fops = &viodasd_fops; g->queue = q; g->private_data = d; diff --git a/drivers/block/xd.c b/drivers/block/xd.c index cbce7c5e944..e828e4cbd3e 100644 --- a/drivers/block/xd.c +++ b/drivers/block/xd.c @@ -215,7 +215,6 @@ static int __init xd_init(void) disk->major = XT_DISK_MAJOR; disk->first_minor = i<<6; sprintf(disk->disk_name, "xd%c", i+'a'); - sprintf(disk->devfs_name, "xd/target%d", i); disk->fops = &xd_fops; disk->private_data = p; disk->queue = xd_queue; diff --git a/drivers/block/z2ram.c b/drivers/block/z2ram.c index bb5e8d665a2..82ddbdd7bd4 100644 --- a/drivers/block/z2ram.c +++ b/drivers/block/z2ram.c @@ -354,7 +354,6 @@ z2_init(void) z2ram_gendisk->first_minor = 0; z2ram_gendisk->fops = &z2_fops; sprintf(z2ram_gendisk->disk_name, "z2ram"); - strcpy(z2ram_gendisk->devfs_name, z2ram_gendisk->disk_name); z2ram_gendisk->queue = z2_queue; add_disk(z2ram_gendisk); diff --git a/drivers/cdrom/aztcd.c b/drivers/cdrom/aztcd.c index ec004897b63..ec469497c10 100644 --- a/drivers/cdrom/aztcd.c +++ b/drivers/cdrom/aztcd.c @@ -1918,7 +1918,6 @@ static int __init aztcd_init(void) azt_disk->first_minor = 0; azt_disk->fops = &azt_fops; sprintf(azt_disk->disk_name, "aztcd"); - sprintf(azt_disk->devfs_name, "aztcd"); azt_disk->queue = azt_queue; add_disk(azt_disk); azt_invalidate_buffers(); diff --git a/drivers/cdrom/cdu31a.c b/drivers/cdrom/cdu31a.c index 72ffd64e8b1..5f0f2027f29 100644 --- a/drivers/cdrom/cdu31a.c +++ b/drivers/cdrom/cdu31a.c @@ -161,7 +161,6 @@ #include <linux/hdreg.h> #include <linux/genhd.h> #include <linux/ioport.h> -#include <linux/devfs_fs_kernel.h> #include <linux/string.h> #include <linux/slab.h> #include <linux/init.h> diff --git a/drivers/cdrom/cm206.c b/drivers/cdrom/cm206.c index f43a988dd41..4ee288688fe 100644 --- a/drivers/cdrom/cm206.c +++ b/drivers/cdrom/cm206.c @@ -187,7 +187,6 @@ History: #include <linux/interrupt.h> #include <linux/timer.h> #include <linux/cdrom.h> -#include <linux/devfs_fs_kernel.h> #include <linux/ioport.h> #include <linux/mm.h> #include <linux/slab.h> diff --git a/drivers/cdrom/gscd.c b/drivers/cdrom/gscd.c index ad5464ab99b..b6ee50a2916 100644 --- a/drivers/cdrom/gscd.c +++ b/drivers/cdrom/gscd.c @@ -955,7 +955,6 @@ static int __init gscd_init(void) gscd_disk->first_minor = 0; gscd_disk->fops = &gscd_fops; sprintf(gscd_disk->disk_name, "gscd"); - sprintf(gscd_disk->devfs_name, "gscd"); if (register_blkdev(MAJOR_NR, "gscd")) { ret = -EIO; diff --git a/drivers/cdrom/mcdx.c b/drivers/cdrom/mcdx.c index 0f6e7aab8d2..788c7a0b2fe 100644 --- a/drivers/cdrom/mcdx.c +++ b/drivers/cdrom/mcdx.c @@ -74,7 +74,6 @@ static const char *mcdx_c_version #include <linux/major.h> #define MAJOR_NR MITSUMI_X_CDROM_MAJOR #include <linux/blkdev.h> -#include <linux/devfs_fs_kernel.h> #include "mcdx.h" diff --git a/drivers/cdrom/optcd.c b/drivers/cdrom/optcd.c index 0b0eab4f40f..25032d7edc5 100644 --- a/drivers/cdrom/optcd.c +++ b/drivers/cdrom/optcd.c @@ -2033,7 +2033,6 @@ static int __init optcd_init(void) optcd_disk->first_minor = 0; optcd_disk->fops = &opt_fops; sprintf(optcd_disk->disk_name, "optcd"); - sprintf(optcd_disk->devfs_name, "optcd"); if (!request_region(optcd_port, 4, "optcd")) { printk(KERN_ERR "optcd: conflict, I/O port 0x%x already used\n", diff --git a/drivers/cdrom/sbpcd.c b/drivers/cdrom/sbpcd.c index 05c9e865eca..2fc966c65a0 100644 --- a/drivers/cdrom/sbpcd.c +++ b/drivers/cdrom/sbpcd.c @@ -371,7 +371,6 @@ #include <linux/kernel.h> #include <linux/cdrom.h> #include <linux/ioport.h> -#include <linux/devfs_fs_kernel.h> #include <linux/major.h> #include <linux/string.h> #include <linux/vmalloc.h> @@ -5808,8 +5807,6 @@ int __init sbpcd_init(void) return -ENOMEM; } - devfs_mk_dir("sbp"); - for (j=0;j<NR_SBPCD;j++) { struct cdrom_device_info * sbpcd_infop; @@ -5871,7 +5868,6 @@ int __init sbpcd_init(void) disk->fops = &sbpcd_bdops; strcpy(disk->disk_name, sbpcd_infop->name); disk->flags = GENHD_FL_CD; - sprintf(disk->devfs_name, "sbp/c0t%d", p->drv_id); p->disk = disk; if (register_cdrom(sbpcd_infop)) { @@ -5906,7 +5902,6 @@ static void sbpcd_exit(void) if (D_S[j].drv_id==-1) continue; del_gendisk(D_S[j].disk); put_disk(D_S[j].disk); - devfs_remove("sbp/c0t%d", j); vfree(D_S[j].sbp_buf); if (D_S[j].sbp_audsiz>0) vfree(D_S[j].aud_buf); @@ -5917,7 +5912,6 @@ static void sbpcd_exit(void) } vfree(D_S[j].sbpcd_infop); } - devfs_remove("sbp"); msg(DBG_INF, "%s module released.\n", major_name); } diff --git a/drivers/cdrom/sjcd.c b/drivers/cdrom/sjcd.c index 74b1cadbf16..bf5aef4e555 100644 --- a/drivers/cdrom/sjcd.c +++ b/drivers/cdrom/sjcd.c @@ -1695,7 +1695,6 @@ static int __init sjcd_init(void) sjcd_disk->first_minor = 0, sjcd_disk->fops = &sjcd_fops, sprintf(sjcd_disk->disk_name, "sjcd"); - sprintf(sjcd_disk->devfs_name, "sjcd"); if (!request_region(sjcd_base, 4,"sjcd")) { printk diff --git a/drivers/cdrom/sonycd535.c b/drivers/cdrom/sonycd535.c index e6565992643..8f7cc452af8 100644 --- a/drivers/cdrom/sonycd535.c +++ b/drivers/cdrom/sonycd535.c @@ -1589,7 +1589,6 @@ static int __init sony535_init(void) cdu_disk->first_minor = 0; cdu_disk->fops = &cdu_fops; sprintf(cdu_disk->disk_name, "cdu"); - sprintf(cdu_disk->devfs_name, "cdu535"); if (!request_region(sony535_cd_base_io, 4, CDU535_HANDLE)) { printk(KERN_WARNING"sonycd535: Unable to request region 0x%x\n", diff --git a/drivers/cdrom/viocd.c b/drivers/cdrom/viocd.c index af6b3bfd169..54ca931e19e 100644 --- a/drivers/cdrom/viocd.c +++ b/drivers/cdrom/viocd.c @@ -49,7 +49,6 @@ #include <asm/iseries/vio.h> #define VIOCD_DEVICE "iseries/vcd" -#define VIOCD_DEVICE_DEVFS "iseries/vcd" #define VIOCD_VERS "1.06" @@ -688,8 +687,6 @@ static int viocd_probe(struct vio_dev *vdev, const struct vio_device_id *id) gendisk->first_minor = deviceno; strncpy(gendisk->disk_name, c->name, sizeof(gendisk->disk_name)); - snprintf(gendisk->devfs_name, sizeof(gendisk->devfs_name), - VIOCD_DEVICE_DEVFS "%d", deviceno); blk_queue_max_hw_segments(q, 1); blk_queue_max_phys_segments(q, 1); blk_queue_max_sectors(q, 4096 / 512); diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c index 122e7a72a4e..2657eeba7da 100644 --- a/drivers/char/cyclades.c +++ b/drivers/char/cyclades.c @@ -5250,7 +5250,6 @@ cy_init(void) cy_serial_driver->owner = THIS_MODULE; cy_serial_driver->driver_name = "cyclades"; cy_serial_driver->name = "ttyC"; - cy_serial_driver->devfs_name = "tts/C"; cy_serial_driver->major = CYCLADES_MAJOR; cy_serial_driver->minor_start = 0; cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; diff --git a/drivers/char/dsp56k.c b/drivers/char/dsp56k.c index e233cf280bc..09b413618b5 100644 --- a/drivers/char/dsp56k.c +++ b/drivers/char/dsp56k.c @@ -33,7 +33,6 @@ #include <linux/fs.h> #include <linux/mm.h> #include <linux/init.h> -#include <linux/devfs_fs_kernel.h> #include <linux/smp_lock.h> #include <linux/device.h> @@ -518,17 +517,9 @@ static int __init dsp56k_init_driver(void) } class_device_create(dsp56k_class, NULL, MKDEV(DSP56K_MAJOR, 0), NULL, "dsp56k"); - err = devfs_mk_cdev(MKDEV(DSP56K_MAJOR, 0), - S_IFCHR | S_IRUSR | S_IWUSR, "dsp56k"); - if(err) - goto out_class; - printk(banner); goto out; -out_class: - class_device_destroy(dsp56k_class, MKDEV(DSP56K_MAJOR, 0)); - class_destroy(dsp56k_class); out_chrdev: unregister_chrdev(DSP56K_MAJOR, "dsp56k"); out: @@ -541,7 +532,6 @@ static void __exit dsp56k_cleanup_driver(void) class_device_destroy(dsp56k_class, MKDEV(DSP56K_MAJOR, 0)); class_destroy(dsp56k_class); unregister_chrdev(DSP56K_MAJOR, "dsp56k"); - devfs_remove("dsp56k"); } module_exit(dsp56k_cleanup_driver); diff --git a/drivers/char/dtlk.c b/drivers/char/dtlk.c index 87dcaa237f0..da2c89f1b8b 100644 --- a/drivers/char/dtlk.c +++ b/drivers/char/dtlk.c @@ -62,7 +62,6 @@ #include <linux/init.h> /* for __init, module_{init,exit} */ #include <linux/poll.h> /* for POLLIN, etc. */ #include <linux/dtlk.h> /* local header file for DoubleTalk values */ -#include <linux/devfs_fs_kernel.h> #include <linux/smp_lock.h> #ifdef TRACING @@ -337,9 +336,6 @@ static int __init dtlk_init(void) if (dtlk_dev_probe() == 0) printk(", MAJOR %d\n", dtlk_major); - devfs_mk_cdev(MKDEV(dtlk_major, DTLK_MINOR), - S_IFCHR | S_IRUSR | S_IWUSR, "dtlk"); - init_timer(&dtlk_timer); dtlk_timer.function = dtlk_timer_tick; init_waitqueue_head(&dtlk_process_list); @@ -357,7 +353,6 @@ static void __exit dtlk_cleanup (void) dtlk_write_tts(DTLK_CLEAR); unregister_chrdev(dtlk_major, "dtlk"); - devfs_remove("dtlk"); release_region(dtlk_port_lpc, DTLK_IO_EXTENT); } diff --git a/drivers/char/epca.c b/drivers/char/epca.c index dc0602ae850..d0b3890d930 100644 --- a/drivers/char/epca.c +++ b/drivers/char/epca.c @@ -1232,7 +1232,6 @@ static int __init pc_init(void) pc_driver->owner = THIS_MODULE; pc_driver->name = "ttyD"; - pc_driver->devfs_name = "tts/D"; pc_driver->major = DIGI_MAJOR; pc_driver->minor_start = 0; pc_driver->type = TTY_DRIVER_TYPE_SERIAL; diff --git a/drivers/char/esp.c b/drivers/char/esp.c index 922174d527a..9827d170ca1 100644 --- a/drivers/char/esp.c +++ b/drivers/char/esp.c @@ -2449,7 +2449,6 @@ static int __init espserial_init(void) esp_driver->owner = THIS_MODULE; esp_driver->name = "ttyP"; - esp_driver->devfs_name = "tts/P"; esp_driver->major = ESP_IN_MAJOR; esp_driver->minor_start = 0; esp_driver->type = TTY_DRIVER_TYPE_SERIAL; diff --git a/drivers/char/ftape/zftape/zftape-init.c b/drivers/char/ftape/zftape/zftape-init.c index 821357ce7e0..3eeb869a9a1 100644 --- a/drivers/char/ftape/zftape/zftape-init.c +++ b/drivers/char/ftape/zftape/zftape-init.c @@ -33,7 +33,6 @@ #endif #include <linux/fcntl.h> #include <linux/smp_lock.h> -#include <linux/devfs_fs_kernel.h> #include <linux/zftape.h> #include <linux/init.h> @@ -332,29 +331,11 @@ KERN_INFO zft_class = class_create(THIS_MODULE, "zft"); for (i = 0; i < 4; i++) { class_device_create(zft_class, NULL, MKDEV(QIC117_TAPE_MAJOR, i), NULL, "qft%i", i); - devfs_mk_cdev(MKDEV(QIC117_TAPE_MAJOR, i), - S_IFCHR | S_IRUSR | S_IWUSR, - "qft%i", i); class_device_create(zft_class, NULL, MKDEV(QIC117_TAPE_MAJOR, i + 4), NULL, "nqft%i", i); - devfs_mk_cdev(MKDEV(QIC117_TAPE_MAJOR, i + 4), - S_IFCHR | S_IRUSR | S_IWUSR, - "nqft%i", i); class_device_create(zft_class, NULL, MKDEV(QIC117_TAPE_MAJOR, i + 16), NULL, "zqft%i", i); - devfs_mk_cdev(MKDEV(QIC117_TAPE_MAJOR, i + 16), - S_IFCHR | S_IRUSR | S_IWUSR, - "zqft%i", i); class_device_create(zft_class, NULL, MKDEV(QIC117_TAPE_MAJOR, i + 20), NULL, "nzqft%i", i); - devfs_mk_cdev(MKDEV(QIC117_TAPE_MAJOR, i + 20), - S_IFCHR | S_IRUSR | S_IWUSR, - "nzqft%i", i); class_device_create(zft_class, NULL, MKDEV(QIC117_TAPE_MAJOR, i + 32), NULL, "rawqft%i", i); - devfs_mk_cdev(MKDEV(QIC117_TAPE_MAJOR, i + 32), - S_IFCHR | S_IRUSR | S_IWUSR, - "rawqft%i", i); class_device_create(zft_class, NULL, MKDEV(QIC117_TAPE_MAJOR, i + 36), NULL, "nrawrawqft%i", i); - devfs_mk_cdev(MKDEV(QIC117_TAPE_MAJOR, i + 36), - S_IFCHR | S_IRUSR | S_IWUSR, - "nrawqft%i", i); } #ifdef CONFIG_ZFT_COMPRESSOR @@ -380,17 +361,11 @@ static void zft_exit(void) TRACE(ft_t_info, "successful"); } for (i = 0; i < 4; i++) { - devfs_remove("qft%i", i); class_device_destroy(zft_class, MKDEV(QIC117_TAPE_MAJOR, i)); - devfs_remove("nqft%i", i); class_device_destroy(zft_class, MKDEV(QIC117_TAPE_MAJOR, i + 4)); - devfs_remove("zqft%i", i); class_device_destroy(zft_class, MKDEV(QIC117_TAPE_MAJOR, i + 16)); - devfs_remove("nzqft%i", i); class_device_destroy(zft_class, MKDEV(QIC117_TAPE_MAJOR, i + 20)); - devfs_remove("rawqft%i", i); class_device_destroy(zft_class, MKDEV(QIC117_TAPE_MAJOR, i + 32)); - devfs_remove("nrawqft%i", i); class_device_destroy(zft_class, MKDEV(QIC117_TAPE_MAJOR, i + 36)); } class_destroy(zft_class); diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c index a5c6a9d7ff0..6e380aecea6 100644 --- a/drivers/char/hvc_console.c +++ b/drivers/char/hvc_console.c @@ -820,7 +820,6 @@ int __init hvc_init(void) return -ENOMEM; drv->owner = THIS_MODULE; - drv->devfs_name = "hvc/"; drv->driver_name = "hvc"; drv->name = "hvc"; drv->major = HVC_MAJOR; diff --git a/drivers/char/hvcs.c b/drivers/char/hvcs.c index afa26b65dac..130dedc3756 100644 --- a/drivers/char/hvcs.c +++ b/drivers/char/hvcs.c @@ -1363,7 +1363,6 @@ static int __init hvcs_module_init(void) hvcs_tty_driver->driver_name = hvcs_driver_name; hvcs_tty_driver->name = hvcs_device_node; - hvcs_tty_driver->devfs_name = hvcs_device_node; /* * We'll let the system assign us a major number, indicated by leaving diff --git a/drivers/char/hvsi.c b/drivers/char/hvsi.c index a0370ed752c..7b04eb15320 100644 --- a/drivers/char/hvsi.c +++ b/drivers/char/hvsi.c @@ -1154,7 +1154,6 @@ static int __init hvsi_init(void) return -ENOMEM; hvsi_driver->owner = THIS_MODULE; - hvsi_driver->devfs_name = "hvsi/"; hvsi_driver->driver_name = "hvsi"; hvsi_driver->name = "hvsi"; hvsi_driver->major = HVSI_MAJOR; diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c index 9ab33c3d359..8619542766c 100644 --- a/drivers/char/ip2/ip2main.c +++ b/drivers/char/ip2/ip2main.c @@ -91,7 +91,6 @@ #include <linux/module.h> #include <linux/signal.h> #include <linux/sched.h> -#include <linux/devfs_fs_kernel.h> #include <linux/timer.h> #include <linux/interrupt.h> #include <linux/pci.h> @@ -414,9 +413,7 @@ cleanup_module(void) /* free io addresses and Tibet */ release_region( ip2config.addr[i], 8 ); class_device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i)); - devfs_remove("ip2/ipl%d", i); class_device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i + 1)); - devfs_remove("ip2/stat%d", i); } /* Disable and remove interrupt handler. */ if ( (ip2config.irq[i] > 0) && have_requested_irq(ip2config.irq[i]) ) { @@ -425,7 +422,6 @@ cleanup_module(void) } } class_destroy(ip2_class); - devfs_remove("ip2"); if ( ( err = tty_unregister_driver ( ip2_tty_driver ) ) ) { printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n", err); } @@ -675,7 +671,6 @@ ip2_loadmain(int *iop, int *irqp, unsigned char *firmware, int firmsize) ip2_tty_driver->owner = THIS_MODULE; ip2_tty_driver->name = "ttyF"; - ip2_tty_driver->devfs_name = "tts/F"; ip2_tty_driver->driver_name = pcDriver_name; ip2_tty_driver->major = IP2_TTY_MAJOR; ip2_tty_driver->minor_start = 0; @@ -683,7 +678,7 @@ ip2_loadmain(int *iop, int *irqp, unsigned char *firmware, int firmsize) ip2_tty_driver->subtype = SERIAL_TYPE_NORMAL; ip2_tty_driver->init_termios = tty_std_termios; ip2_tty_driver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL; - ip2_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS; + ip2_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; tty_set_operations(ip2_tty_driver, &ip2_ops); ip2trace (ITRC_NO_PORT, ITRC_INIT, 3, 0 ); @@ -724,26 +719,9 @@ ip2_loadmain(int *iop, int *irqp, unsigned char *firmware, int firmsize) class_device_create(ip2_class, NULL, MKDEV(IP2_IPL_MAJOR, 4 * i), NULL, "ipl%d", i); - err = devfs_mk_cdev(MKDEV(IP2_IPL_MAJOR, 4 * i), - S_IRUSR | S_IWUSR | S_IRGRP | S_IFCHR, - "ip2/ipl%d", i); - if (err) { - class_device_destroy(ip2_class, - MKDEV(IP2_IPL_MAJOR, 4 * i)); - goto out_class; - } - class_device_create(ip2_class, NULL, MKDEV(IP2_IPL_MAJOR, 4 * i + 1), NULL, "stat%d", i); - err = devfs_mk_cdev(MKDEV(IP2_IPL_MAJOR, 4 * i + 1), - S_IRUSR | S_IWUSR | S_IRGRP | S_IFCHR, - "ip2/stat%d", i); - if (err) { - class_device_destroy(ip2_class, - MKDEV(IP2_IPL_MAJOR, 4 * i + 1)); - goto out_class; - } for ( box = 0; box < ABS_MAX_BOXES; ++box ) { diff --git a/drivers/char/ipmi/ipmi_devintf.c b/drivers/char/ipmi/ipmi_devintf.c index e1c95374984..da637adbbfa 100644 --- a/drivers/char/ipmi/ipmi_devintf.c +++ b/drivers/char/ipmi/ipmi_devintf.c @@ -40,7 +40,6 @@ #include <linux/poll.h> #include <linux/spinlock.h> #include <linux/slab.h> -#include <linux/devfs_fs_kernel.h> #include <linux/ipmi.h> #include <linux/mutex.h> #include <linux/init.h> @@ -804,9 +803,6 @@ static void ipmi_new_smi(int if_num, struct device *device) dev_t dev = MKDEV(ipmi_major, if_num); struct ipmi_reg_list *entry; - devfs_mk_cdev(dev, S_IFCHR | S_IRUSR | S_IWUSR, - "ipmidev/%d", if_num); - entry = kmalloc(sizeof(*entry), GFP_KERNEL); if (!entry) { printk(KERN_ERR "ipmi_devintf: Unable to create the" @@ -836,7 +832,6 @@ static void ipmi_smi_gone(int if_num) } class_device_destroy(ipmi_class, dev); mutex_unlock(®_list_mutex); - devfs_remove("ipmidev/%d", if_num); } static struct ipmi_smi_watcher smi_watcher = @@ -872,8 +867,6 @@ static __init int init_ipmi_devintf(void) ipmi_major = rv; } - devfs_mk_dir(DEVICE_NAME); - rv = ipmi_smi_watcher_register(&smi_watcher); if (rv) { unregister_chrdev(ipmi_major, DEVICE_NAME); @@ -898,7 +891,6 @@ static __exit void cleanup_ipmi(void) mutex_unlock(®_list_mutex); class_destroy(ipmi_class); ipmi_smi_watcher_unregister(&smi_watcher); - devfs_remove(DEVICE_NAME); unregister_chrdev(ipmi_major, DEVICE_NAME); } module_exit(cleanup_ipmi); diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c index efaaa1937ab..478bf4d7d06 100644 --- a/drivers/char/isicom.c +++ b/drivers/char/isicom.c @@ -1581,7 +1581,6 @@ static int __devinit isicom_register_tty_driver(void) isicom_normal->owner = THIS_MODULE; isicom_normal->name = "ttyM"; - isicom_normal->devfs_name = "isicom/"; isicom_normal->major = ISICOM_NMAJOR; isicom_normal->minor_start = 0; isicom_normal->type = TTY_DRIVER_TYPE_SERIAL; diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c index 216c79256de..c74e5660a9b 100644 --- a/drivers/char/istallion.c +++ b/drivers/char/istallion.c @@ -39,7 +39,6 @@ #include <linux/ioport.h> #include <linux/delay.h> #include <linux/init.h> -#include <linux/devfs_fs_kernel.h> #include <linux/device.h> #include <linux/wait.h> #include <linux/eisa.h> @@ -826,11 +825,8 @@ static void __exit istallion_module_exit(void) return; } put_tty_driver(stli_serial); - for (i = 0; i < 4; i++) { - devfs_remove("staliomem/%d", i); + for (i = 0; i < 4; i++) class_device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, i)); - } - devfs_remove("staliomem"); class_destroy(istallion_class); if ((i = unregister_chrdev(STL_SIOMEMMAJOR, "staliomem"))) printk("STALLION: failed to un-register serial memory device, " @@ -4728,16 +4724,11 @@ int __init stli_init(void) printk(KERN_ERR "STALLION: failed to register serial memory " "device\n"); - devfs_mk_dir("staliomem"); istallion_class = class_create(THIS_MODULE, "staliomem"); - for (i = 0; i < 4; i++) { - devfs_mk_cdev(MKDEV(STL_SIOMEMMAJOR, i), - S_IFCHR | S_IRUSR | S_IWUSR, - "staliomem/%d", i); + for (i = 0; i < 4; i++) class_device_create(istallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i), NULL, "staliomem%d", i); - } /* * Set up the tty driver structure and register us as a driver. diff --git a/drivers/char/lp.c b/drivers/char/lp.c index e5726052529..b11a390581b 100644 --- a/drivers/char/lp.c +++ b/drivers/char/lp.c @@ -120,7 +120,6 @@ #include <linux/major.h> #include <linux/sched.h> #include <linux/smp_lock.h> -#include <linux/devfs_fs_kernel.h> #include <linux/slab.h> #include <linux/fcntl.h> #include <linux/delay.h> @@ -807,8 +806,6 @@ static int lp_register(int nr, struct parport *port) class_device_create(lp_class, NULL, MKDEV(LP_MAJOR, nr), NULL, "lp%d", nr); - devfs_mk_cdev(MKDEV(LP_MAJOR, nr), S_IFCHR | S_IRUGO | S_IWUGO, - "printers/%d", nr); printk(KERN_INFO "lp%d: using %s (%s).\n", nr, port->name, (port->irq == PARPORT_IRQ_NONE)?"polling":"interrupt-driven"); @@ -907,7 +904,6 @@ static int __init lp_init (void) return -EIO; } - devfs_mk_dir("printers"); lp_class = class_create(THIS_MODULE, "printer"); if (IS_ERR(lp_class)) { err = PTR_ERR(lp_class); @@ -933,7 +929,6 @@ static int __init lp_init (void) out_class: class_destroy(lp_class); out_devfs: - devfs_remove("printers"); unregister_chrdev(LP_MAJOR, "lp"); return err; } @@ -981,10 +976,8 @@ static void lp_cleanup_module (void) if (lp_table[offset].dev == NULL) continue; parport_unregister_device(lp_table[offset].dev); - devfs_remove("printers/%d", offset); class_device_destroy(lp_class, MKDEV(LP_MAJOR, offset)); } - devfs_remove("printers"); class_destroy(lp_class); } diff --git a/drivers/char/mem.c b/drivers/char/mem.c index 1fa9fa157c1..6fe7b6c6c46 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -20,7 +20,6 @@ #include <linux/tty.h> #include <linux/capability.h> #include <linux/smp_lock.h> -#include <linux/devfs_fs_kernel.h> #include <linux/ptrace.h> #include <linux/device.h> #include <linux/highmem.h> @@ -941,13 +940,10 @@ static int __init chr_dev_init(void) printk("unable to get major %d for memory devs\n", MEM_MAJOR); mem_class = class_create(THIS_MODULE, "mem"); - for (i = 0; i < ARRAY_SIZE(devlist); i++) { + for (i = 0; i < ARRAY_SIZE(devlist); i++) class_device_create(mem_class, NULL, MKDEV(MEM_MAJOR, devlist[i].minor), NULL, devlist[i].name); - devfs_mk_cdev(MKDEV(MEM_MAJOR, devlist[i].minor), - S_IFCHR | devlist[i].mode, devlist[i].name); - } return 0; } diff --git a/drivers/char/misc.c b/drivers/char/misc.c index 96eb2a709e2..dfe1cede391 100644 --- a/drivers/char/misc.c +++ b/drivers/char/misc.c @@ -44,7 +44,6 @@ #include <linux/slab.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> -#include <linux/devfs_fs_kernel.h> #include <linux/stat.h> #include <linux/init.h> #include <linux/device.h> @@ -204,7 +203,7 @@ int misc_register(struct miscdevice * misc) { struct miscdevice *c; dev_t dev; - int err; + int err = 0; down(&misc_sem); list_for_each_entry(c, &misc_list, list) { @@ -228,10 +227,6 @@ int misc_register(struct miscdevice * misc) if (misc->minor < DYNAMIC_MINORS) misc_minors[misc->minor >> 3] |= 1 << (misc->minor & 7); - if (misc->devfs_name[0] == '\0') { - snprintf(misc->devfs_name, sizeof(misc->devfs_name), - "misc/%s", misc->name); - } dev = MKDEV(MISC_MAJOR, misc->minor); misc->class = class_device_create(misc_class, NULL, dev, misc->dev, @@ -241,13 +236,6 @@ int misc_register(struct miscdevice * misc) goto out; } - err = devfs_mk_cdev(dev, S_IFCHR|S_IRUSR|S_IWUSR|S_IRGRP, - misc->devfs_name); - if (err) { - class_device_destroy(misc_class, dev); - goto out; - } - /* * Add it to the front, so that later devices can "override" * earlier defaults @@ -278,7 +266,6 @@ int misc_deregister(struct miscdevice * misc) down(&misc_sem); list_del(&misc->list); class_device_destroy(misc_class, MKDEV(MISC_MAJOR, misc->minor)); - devfs_remove(misc->devfs_name); if (i < DYNAMIC_MINORS && i>0) { misc_minors[i>>3] &= ~(1 << (misc->minor & 7)); } diff --git a/drivers/char/mmtimer.c b/drivers/char/mmtimer.c index d65b3109318..95e8122b806 100644 --- a/drivers/char/mmtimer.c +++ b/drivers/char/mmtimer.c @@ -25,7 +25,6 @@ #include <linux/init.h> #include <linux/errno.h> #include <linux/mm.h> -#include <linux/devfs_fs_kernel.h> #include <linux/mmtimer.h> #include <linux/miscdevice.h> #include <linux/posix-timers.h> @@ -694,7 +693,6 @@ static int __init mmtimer_init(void) return -1; } - strcpy(mmtimer_miscdev.devfs_name, MMTIMER_NAME); if (misc_register(&mmtimer_miscdev)) { printk(KERN_ERR "%s: failed to register device\n", MMTIMER_NAME); diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c index 01247cccb89..52ef61f54ba 100644 --- a/drivers/char/moxa.c +++ b/drivers/char/moxa.c @@ -342,7 +342,6 @@ static int __init moxa_init(void) init_MUTEX(&moxaBuffSem); moxaDriver->owner = THIS_MODULE; moxaDriver->name = "ttyMX"; - moxaDriver->devfs_name = "tts/a"; moxaDriver->major = ttymajor; moxaDriver->minor_start = 0; moxaDriver->type = TTY_DRIVER_TYPE_SERIAL; diff --git a/drivers/char/ppdev.c b/drivers/char/ppdev.c index bee6c47b45b..24231d9743d 100644 --- a/drivers/char/ppdev.c +++ b/drivers/char/ppdev.c @@ -60,7 +60,6 @@ #include <linux/init.h> #include <linux/sched.h> #include <linux/device.h> -#include <linux/devfs_fs_kernel.h> #include <linux/ioctl.h> #include <linux/parport.h> #include <linux/ctype.h> @@ -770,7 +769,7 @@ static struct parport_driver pp_driver = { static int __init ppdev_init (void) { - int i, err = 0; + int err = 0; if (register_chrdev (PP_MAJOR, CHRDEV, &pp_fops)) { printk (KERN_WARNING CHRDEV ": unable to get major %d\n", @@ -782,11 +781,6 @@ static int __init ppdev_init (void) err = PTR_ERR(ppdev_class); goto out_chrdev; } - devfs_mk_dir("parports"); - for (i = 0; i < PARPORT_MAX; i++) { - devfs_mk_cdev(MKDEV(PP_MAJOR, i), - S_IFCHR | S_IRUGO | S_IWUGO, "parports/%d", i); - } if (parport_register_driver(&pp_driver)) { printk (KERN_WARNING CHRDEV ": unable to register with parport\n"); goto out_class; @@ -796,9 +790,6 @@ static int __init ppdev_init (void) goto out; out_class: - for (i = 0; i < PARPORT_MAX; i++) - devfs_remove("parports/%d", i); - devfs_remove("parports"); class_destroy(ppdev_class); out_chrdev: unregister_chrdev(PP_MAJOR, CHRDEV); @@ -808,12 +799,8 @@ out: static void __exit ppdev_cleanup (void) { - int i; /* Clean up all parport stuff */ - for (i = 0; i < PARPORT_MAX; i++) - devfs_remove("parports/%d", i); parport_unregister_driver(&pp_driver); - devfs_remove("parports"); class_destroy(ppdev_class); unregister_chrdev (PP_MAJOR, CHRDEV); } diff --git a/drivers/char/pty.c b/drivers/char/pty.c index 0c17f61549b..9491e430756 100644 --- a/drivers/char/pty.c +++ b/drivers/char/pty.c @@ -24,7 +24,6 @@ #include <linux/major.h> #include <linux/mm.h> #include <linux/init.h> -#include <linux/devfs_fs_kernel.h> #include <linux/sysctl.h> #include <asm/uaccess.h> @@ -265,7 +264,6 @@ static void __init legacy_pty_init(void) pty_driver->owner = THIS_MODULE; pty_driver->driver_name = "pty_master"; pty_driver->name = "pty"; - pty_driver->devfs_name = "pty/m"; pty_driver->major = PTY_MASTER_MAJOR; pty_driver->minor_start = 0; pty_driver->type = TTY_DRIVER_TYPE_PTY; @@ -283,7 +281,6 @@ static void __init legacy_pty_init(void) pty_slave_driver->owner = THIS_MODULE; pty_slave_driver->driver_name = "pty_slave"; pty_slave_driver->name = "ttyp"; - pty_slave_driver->devfs_name = "pty/s"; pty_slave_driver->major = PTY_SLAVE_MAJOR; pty_slave_driver->minor_start = 0; pty_slave_driver->type = TTY_DRIVER_TYPE_PTY; @@ -351,7 +348,6 @@ static int pty_unix98_ioctl(struct tty_struct *tty, struct file *file, static void __init unix98_pty_init(void) { - devfs_mk_dir("pts"); ptm_driver = alloc_tty_driver(NR_UNIX98_PTY_MAX); if (!ptm_driver) panic("Couldn't allocate Unix98 ptm driver"); @@ -372,7 +368,7 @@ static void __init unix98_pty_init(void) ptm_driver->init_termios.c_cflag = B38400 | CS8 | CREAD; ptm_driver->init_termios.c_lflag = 0; ptm_driver->flags = TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_REAL_RAW | - TTY_DRIVER_NO_DEVFS | TTY_DRIVER_DEVPTS_MEM; + TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_DEVPTS_MEM; ptm_driver->other = pts_driver; tty_set_operations(ptm_driver, &pty_ops); ptm_driver->ioctl = pty_unix98_ioctl; @@ -387,7 +383,7 @@ static void __init unix98_pty_init(void) pts_driver->init_termios = tty_std_termios; pts_driver->init_termios.c_cflag = B38400 | CS8 | CREAD; pts_driver->flags = TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_REAL_RAW | - TTY_DRIVER_NO_DEVFS | TTY_DRIVER_DEVPTS_MEM; + TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_DEVPTS_MEM; pts_driver->other = ptm_driver; tty_set_operations(pts_driver, &pty_ops); diff --git a/drivers/char/raw.c b/drivers/char/raw.c index 15a7b408652..9bf97c5e38c 100644 --- a/drivers/char/raw.c +++ b/drivers/char/raw.c @@ -10,7 +10,6 @@ #include <linux/init.h> #include <linux/fs.h> -#include <linux/devfs_fs_kernel.h> #include <linux/major.h> #include <linux/blkdev.h> #include <linux/module.h> @@ -288,7 +287,6 @@ static struct cdev raw_cdev = { static int __init raw_init(void) { - int i; dev_t dev = MKDEV(RAW_MAJOR, 0); if (register_chrdev_region(dev, MAX_RAW_MINORS, "raw")) @@ -310,13 +308,6 @@ static int __init raw_init(void) } class_device_create(raw_class, NULL, MKDEV(RAW_MAJOR, 0), NULL, "rawctl"); - devfs_mk_cdev(MKDEV(RAW_MAJOR, 0), - S_IFCHR | S_IRUGO | S_IWUGO, - "raw/rawctl"); - for (i = 1; i < MAX_RAW_MINORS; i++) - devfs_mk_cdev(MKDEV(RAW_MAJOR, i), - S_IFCHR | S_IRUGO | S_IWUGO, - "raw/raw%d", i); return 0; error: @@ -326,12 +317,6 @@ error: static void __exit raw_exit(void) { - int i; - - for (i = 1; i < MAX_RAW_MINORS; i++) - devfs_remove("raw/raw%d", i); - devfs_remove("raw/rawctl"); - devfs_remove("raw"); class_device_destroy(raw_class, MKDEV(RAW_MAJOR, 0)); class_destroy(raw_class); cdev_del(&raw_cdev); diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c index 657c0d88f48..c84c3c3f10c 100644 --- a/drivers/char/riscom8.c +++ b/drivers/char/riscom8.c @@ -1634,7 +1634,6 @@ static inline int rc_init_drivers(void) memset(IRQ_to_board, 0, sizeof(IRQ_to_board)); riscom_driver->owner = THIS_MODULE; riscom_driver->name = "ttyL"; - riscom_driver->devfs_name = "tts/L"; riscom_driver->major = RISCOM8_NORMAL_MAJOR; riscom_driver->type = TTY_DRIVER_TYPE_SERIAL; riscom_driver->subtype = SERIAL_TYPE_NORMAL; diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c index 0708c5164c8..0ac13188132 100644 --- a/drivers/char/rocket.c +++ b/drivers/char/rocket.c @@ -2426,8 +2426,7 @@ static int __init rp_init(void) */ rocket_driver->owner = THIS_MODULE; - rocket_driver->flags = TTY_DRIVER_NO_DEVFS; - rocket_driver->devfs_name = "tts/R"; + rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV; rocket_driver->name = "ttyR"; rocket_driver->driver_name = "Comtrol RocketPort"; rocket_driver->major = TTY_ROCKET_MAJOR; @@ -2438,7 +2437,7 @@ static int __init rp_init(void) rocket_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; #ifdef ROCKET_SOFT_FLOW - rocket_driver->flags |= TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS; + rocket_driver->flags |= TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; #endif tty_set_operations(rocket_driver, &rocket_ops); diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c index 037c940ac71..c851eeaa406 100644 --- a/drivers/char/serial167.c +++ b/drivers/char/serial167.c @@ -2235,7 +2235,6 @@ scrn[1] = '\0'; /* Initialize the tty_driver structure */ cy_serial_driver->owner = THIS_MODULE; - cy_serial_driver->devfs_name = "tts/"; cy_serial_driver->name = "ttyS"; cy_serial_driver->major = TTY_MAJOR; cy_serial_driver->minor_start = 64; diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c index 00b4a218716..0f7a542d904 100644 --- a/drivers/char/stallion.c +++ b/drivers/char/stallion.c @@ -40,7 +40,6 @@ #include <linux/ioport.h> #include <linux/init.h> #include <linux/smp_lock.h> -#include <linux/devfs_fs_kernel.h> #include <linux/device.h> #include <linux/delay.h> @@ -757,11 +756,8 @@ static void __exit stallion_module_exit(void) "errno=%d\n", -i); return; } - for (i = 0; i < 4; i++) { - devfs_remove("staliomem/%d", i); + for (i = 0; i < 4; i++) class_device_destroy(stallion_class, MKDEV(STL_SIOMEMMAJOR, i)); - } - devfs_remove("staliomem"); if ((i = unregister_chrdev(STL_SIOMEMMAJOR, "staliomem"))) printk("STALLION: failed to un-register serial memory device, " "errno=%d\n", -i); @@ -3044,22 +3040,16 @@ static int __init stl_init(void) */ if (register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stl_fsiomem)) printk("STALLION: failed to register serial board device\n"); - devfs_mk_dir("staliomem"); stallion_class = class_create(THIS_MODULE, "staliomem"); - for (i = 0; i < 4; i++) { - devfs_mk_cdev(MKDEV(STL_SIOMEMMAJOR, i), - S_IFCHR|S_IRUSR|S_IWUSR, - "staliomem/%d", i); + for (i = 0; i < 4; i++) class_device_create(stallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i), NULL, "staliomem%d", i); - } stl_serial->owner = THIS_MODULE; stl_serial->driver_name = stl_drvname; stl_serial->name = "ttyE"; - stl_serial->devfs_name = "tts/E"; stl_serial->major = STL_SERIALMAJOR; stl_serial->minor_start = 0; stl_serial->type = TTY_DRIVER_TYPE_SERIAL; diff --git a/drivers/char/tipar.c b/drivers/char/tipar.c index 079db5a935a..f7802e5bd7c 100644 --- a/drivers/char/tipar.c +++ b/drivers/char/tipar.c @@ -56,7 +56,6 @@ #include <linux/ioport.h> #include <asm/io.h> #include <linux/bitops.h> -#include <linux/devfs_fs_kernel.h> /* DevFs support */ #include <linux/parport.h> /* Our code depend on parport */ #include <linux/device.h> @@ -443,12 +442,6 @@ tipar_register(int nr, struct parport *port) class_device_create(tipar_class, NULL, MKDEV(TIPAR_MAJOR, TIPAR_MINOR + nr), NULL, "par%d", nr); - /* Use devfs, tree: /dev/ticables/par/[0..2] */ - err = devfs_mk_cdev(MKDEV(TIPAR_MAJOR, TIPAR_MINOR + nr), - S_IFCHR | S_IRUGO | S_IWUGO, - "ticables/par/%d", nr); - if (err) - goto out_class; /* Display informations */ pr_info("tipar%d: using %s (%s)\n", nr, port->name, (port->irq == @@ -460,11 +453,7 @@ tipar_register(int nr, struct parport *port) pr_info("tipar%d: link cable not found\n", nr); err = 0; - goto out; -out_class: - class_device_destroy(tipar_class, MKDEV(TIPAR_MAJOR, TIPAR_MINOR + nr)); - class_destroy(tipar_class); out: return err; } @@ -507,9 +496,6 @@ tipar_init_module(void) goto out; } - /* Use devfs with tree: /dev/ticables/par/[0..2] */ - devfs_mk_dir("ticables/par"); - tipar_class = class_create(THIS_MODULE, "ticables"); if (IS_ERR(tipar_class)) { err = PTR_ERR(tipar_class); @@ -528,7 +514,6 @@ out_class: class_destroy(tipar_class); out_chrdev: - devfs_remove("ticables/par"); unregister_chrdev(TIPAR_MAJOR, "tipar"); out: return err; @@ -549,10 +534,8 @@ tipar_cleanup_module(void) continue; parport_unregister_device(table[i].dev); class_device_destroy(tipar_class, MKDEV(TIPAR_MAJOR, i)); - devfs_remove("ticables/par/%d", i); } class_destroy(tipar_class); - devfs_remove("ticables/par"); pr_info("tipar: module unloaded\n"); } diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index 8d19f7281f0..a1143238fec 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -102,7 +102,6 @@ #include <linux/kbd_kern.h> #include <linux/vt_kern.h> #include <linux/selection.h> -#include <linux/devfs_fs_kernel.h> #include <linux/kmod.h> @@ -2955,8 +2954,8 @@ static struct class *tty_class; * Returns a pointer to the class device (or ERR_PTR(-EFOO) on error). * * This call is required to be made to register an individual tty device if - * the tty driver's flags have the TTY_DRIVER_NO_DEVFS bit set. If that - * bit is not set, this function should not be called. + * the tty driver's flags have the TTY_DRIVER_DYNAMIC_DEV bit set. If that + * bit is not set, this function should not be called by a tty driver. */ struct class_device *tty_register_device(struct tty_driver *driver, unsigned index, struct device *device) @@ -2970,9 +2969,6 @@ struct class_device *tty_register_device(struct tty_driver *driver, return ERR_PTR(-EINVAL); } - devfs_mk_cdev(dev, S_IFCHR | S_IRUSR | S_IWUSR, - "%s%d", driver->devfs_name, index + driver->name_base); - if (driver->type == TTY_DRIVER_TYPE_PTY) pty_line_name(driver, index, name); else @@ -2991,7 +2987,6 @@ struct class_device *tty_register_device(struct tty_driver *driver, */ void tty_unregister_device(struct tty_driver *driver, unsigned index) { - devfs_remove("%s%d", driver->devfs_name, index + driver->name_base); class_device_destroy(tty_class, MKDEV(driver->major, driver->minor_start) + index); } @@ -3113,7 +3108,7 @@ int tty_register_driver(struct tty_driver *driver) list_add(&driver->tty_drivers, &tty_drivers); - if ( !(driver->flags & TTY_DRIVER_NO_DEVFS) ) { + if ( !(driver->flags & TTY_DRIVER_DYNAMIC_DEV) ) { for(i = 0; i < driver->num; i++) tty_register_device(driver, i, NULL); } @@ -3156,7 +3151,7 @@ int tty_unregister_driver(struct tty_driver *driver) driver->termios_locked[i] = NULL; kfree(tp); } - if (!(driver->flags & TTY_DRIVER_NO_DEVFS)) + if (!(driver->flags & TTY_DRIVER_DYNAMIC_DEV)) tty_unregister_device(driver, i); } p = driver->ttys; @@ -3232,14 +3227,12 @@ static int __init tty_init(void) if (cdev_add(&tty_cdev, MKDEV(TTYAUX_MAJOR, 0), 1) || register_chrdev_region(MKDEV(TTYAUX_MAJOR, 0), 1, "/dev/tty") < 0) panic("Couldn't register /dev/tty driver\n"); - devfs_mk_cdev(MKDEV(TTYAUX_MAJOR, 0), S_IFCHR|S_IRUGO|S_IWUGO, "tty"); class_device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 0), NULL, "tty"); cdev_init(&console_cdev, &console_fops); if (cdev_add(&console_cdev, MKDEV(TTYAUX_MAJOR, 1), 1) || register_chrdev_region(MKDEV(TTYAUX_MAJOR, 1), 1, "/dev/console") < 0) panic("Couldn't register /dev/console driver\n"); - devfs_mk_cdev(MKDEV(TTYAUX_MAJOR, 1), S_IFCHR|S_IRUSR|S_IWUSR, "console"); class_device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 1), NULL, "console"); #ifdef CONFIG_UNIX98_PTYS @@ -3247,7 +3240,6 @@ static int __init tty_init(void) if (cdev_add(&ptmx_cdev, MKDEV(TTYAUX_MAJOR, 2), 1) || register_chrdev_region(MKDEV(TTYAUX_MAJOR, 2), 1, "/dev/ptmx") < 0) panic("Couldn't register /dev/ptmx driver\n"); - devfs_mk_cdev(MKDEV(TTYAUX_MAJOR, 2), S_IFCHR|S_IRUGO|S_IWUGO, "ptmx"); class_device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 2), NULL, "ptmx"); #endif @@ -3256,7 +3248,6 @@ static int __init tty_init(void) if (cdev_add(&vc0_cdev, MKDEV(TTY_MAJOR, 0), 1) || register_chrdev_region(MKDEV(TTY_MAJOR, 0), 1, "/dev/vc/0") < 0) panic("Couldn't register /dev/tty0 driver\n"); - devfs_mk_cdev(MKDEV(TTY_MAJOR, 0), S_IFCHR|S_IRUSR|S_IWUSR, "vc/0"); class_device_create(tty_class, NULL, MKDEV(TTY_MAJOR, 0), NULL, "tty0"); vty_init(); diff --git a/drivers/char/vc_screen.c b/drivers/char/vc_screen.c index 3c1dafaa344..234d7f3fb11 100644 --- a/drivers/char/vc_screen.c +++ b/drivers/char/vc_screen.c @@ -26,7 +26,6 @@ #include <linux/major.h> #include <linux/errno.h> #include <linux/tty.h> -#include <linux/devfs_fs_kernel.h> #include <linux/sched.h> #include <linux/interrupt.h> #include <linux/mm.h> @@ -478,12 +477,6 @@ static struct class *vc_class; void vcs_make_devfs(struct tty_struct *tty) { - devfs_mk_cdev(MKDEV(VCS_MAJOR, tty->index + 1), - S_IFCHR|S_IRUSR|S_IWUSR, - "vcc/%u", tty->index + 1); - devfs_mk_cdev(MKDEV(VCS_MAJOR, tty->index + 129), - S_IFCHR|S_IRUSR|S_IWUSR, - "vcc/a%u", tty->index + 1); class_device_create(vc_class, NULL, MKDEV(VCS_MAJOR, tty->index + 1), NULL, "vcs%u", tty->index + 1); class_device_create(vc_class, NULL, MKDEV(VCS_MAJOR, tty->index + 129), @@ -491,8 +484,6 @@ void vcs_make_devfs(struct tty_struct *tty) } void vcs_remove_devfs(struct tty_struct *tty) { - devfs_remove("vcc/%u", tty->index + 1); - devfs_remove("vcc/a%u", tty->index + 1); class_device_destroy(vc_class, MKDEV(VCS_MAJOR, tty->index + 1)); class_device_destroy(vc_class, MKDEV(VCS_MAJOR, tty->index + 129)); } @@ -503,8 +494,6 @@ int __init vcs_init(void) panic("unable to get major %d for vcs device", VCS_MAJOR); vc_class = class_create(THIS_MODULE, "vc"); - devfs_mk_cdev(MKDEV(VCS_MAJOR, 0), S_IFCHR|S_IRUSR|S_IWUSR, "vcc/0"); - devfs_mk_cdev(MKDEV(VCS_MAJOR, 128), S_IFCHR|S_IRUSR|S_IWUSR, "vcc/a0"); class_device_create(vc_class, NULL, MKDEV(VCS_MAJOR, 0), NULL, "vcs"); class_device_create(vc_class, NULL, MKDEV(VCS_MAJOR, 128), NULL, "vcsa"); return 0; diff --git a/drivers/char/viocons.c b/drivers/char/viocons.c index 4e536038874..07f5ce4b28e 100644 --- a/drivers/char/viocons.c +++ b/drivers/char/viocons.c @@ -1152,7 +1152,6 @@ static int __init viocons_init2(void) viotty_driver = alloc_tty_driver(VTTY_PORTS); viotty_driver->owner = THIS_MODULE; viotty_driver->driver_name = "vioconsole"; - viotty_driver->devfs_name = "vcs/"; viotty_driver->name = "tty"; viotty_driver->name_base = 1; viotty_driver->major = TTY_MAJOR; diff --git a/drivers/char/viotape.c b/drivers/char/viotape.c index 11c7e9de595..198f1505ae2 100644 --- a/drivers/char/viotape.c +++ b/drivers/char/viotape.c @@ -43,7 +43,6 @@ #include <linux/dma-mapping.h> #include <linux/fs.h> #include <linux/cdev.h> -#include <linux/devfs_fs_kernel.h> #include <linux/major.h> #include <linux/completion.h> #include <linux/proc_fs.h> @@ -246,7 +245,6 @@ static struct device *tape_device[VIOTAPE_MAX_TAPE]; */ static struct { unsigned char cur_part; - int dev_handle; unsigned char part_stat_rwi[MAX_PARTITIONS]; } state[VIOTAPE_MAX_TAPE]; @@ -959,12 +957,7 @@ static int viotape_probe(struct vio_dev *vdev, const struct vio_device_id *id) "iseries!vt%d", i); class_device_create(tape_class, NULL, MKDEV(VIOTAPE_MAJOR, i | 0x80), NULL, "iseries!nvt%d", i); - devfs_mk_cdev(MKDEV(VIOTAPE_MAJOR, i), S_IFCHR | S_IRUSR | S_IWUSR, - "iseries/vt%d", i); - devfs_mk_cdev(MKDEV(VIOTAPE_MAJOR, i | 0x80), - S_IFCHR | S_IRUSR | S_IWUSR, "iseries/nvt%d", i); sprintf(tapename, "iseries/vt%d", i); - state[i].dev_handle = devfs_register_tape(tapename); printk(VIOTAPE_KERN_INFO "tape %s is iSeries " "resource %10.10s type %4.4s, model %3.3s\n", tapename, viotape_unitinfo[i].rsrcname, @@ -976,9 +969,6 @@ static int viotape_remove(struct vio_dev *vdev) { int i = vdev->unit_address; - devfs_remove("iseries/nvt%d", i); - devfs_remove("iseries/vt%d", i); - devfs_unregister_tape(state[i].dev_handle); class_device_destroy(tape_class, MKDEV(VIOTAPE_MAJOR, i | 0x80)); class_device_destroy(tape_class, MKDEV(VIOTAPE_MAJOR, i)); return 0; diff --git a/drivers/char/vme_scc.c b/drivers/char/vme_scc.c index fd00822ac14..fe99fc1aba4 100644 --- a/drivers/char/vme_scc.c +++ b/drivers/char/vme_scc.c @@ -147,7 +147,6 @@ static int scc_init_drivers(void) scc_driver->owner = THIS_MODULE; scc_driver->driver_name = "scc"; scc_driver->name = "ttyS"; - scc_driver->devfs_name = "tts/"; scc_driver->major = TTY_MAJOR; scc_driver->minor_start = SCC_MINOR_BASE; scc_driver->type = TTY_DRIVER_TYPE_SERIAL; diff --git a/drivers/char/vt.c b/drivers/char/vt.c index 714d95ff2f1..d6f65032649 100644 --- a/drivers/char/vt.c +++ b/drivers/char/vt.c @@ -79,7 +79,6 @@ #include <linux/mm.h> #include <linux/console.h> #include <linux/init.h> -#include <linux/devfs_fs_kernel.h> #include <linux/vt_kern.h> #include <linux/selection.h> #include <linux/tiocl.h> @@ -2663,7 +2662,6 @@ int __init vty_init(void) if (!console_driver) panic("Couldn't allocate console driver\n"); console_driver->owner = THIS_MODULE; - console_driver->devfs_name = "vc/"; console_driver->name = "tty"; console_driver->name_base = 1; console_driver->major = TTY_MAJOR; diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index 99fa42402e7..bfafd4846a0 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -3527,8 +3527,6 @@ static int ide_cd_probe(ide_drive_t *drive) drive->driver_data = info; g->minors = 1; - snprintf(g->devfs_name, sizeof(g->devfs_name), - "%s/cd", drive->devfs_name); g->driverfs_dev = &drive->gendev; g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE; if (ide_cdrom_setup(drive)) { diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c index f033d732f38..d0227c39ced 100644 --- a/drivers/ide/ide-disk.c +++ b/drivers/ide/ide-disk.c @@ -1018,7 +1018,6 @@ static void ide_disk_release(struct kref *kref) struct gendisk *g = idkp->disk; drive->driver_data = NULL; - drive->devfs_name[0] = '\0'; g->private_data = NULL; put_disk(g); kfree(idkp); @@ -1222,7 +1221,6 @@ static int ide_disk_probe(ide_drive_t *drive) drive->attach = 1; g->minors = 1 << PARTN_BITS; - strcpy(g->devfs_name, drive->devfs_name); g->driverfs_dev = &drive->gendev; g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; set_capacity(g, idedisk_capacity(drive)); diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c index 4656587aa2f..68628327c0f 100644 --- a/drivers/ide/ide-floppy.c +++ b/drivers/ide/ide-floppy.c @@ -2176,7 +2176,6 @@ static int ide_floppy_probe(ide_drive_t *drive) g->minors = 1 << PARTN_BITS; g->driverfs_dev = &drive->gendev; - strcpy(g->devfs_name, drive->devfs_name); g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; g->fops = &idefloppy_ops; drive->attach = 1; diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c index 9ebf8ae2a5e..0d5038a2856 100644 --- a/drivers/ide/ide-probe.c +++ b/drivers/ide/ide-probe.c @@ -47,7 +47,6 @@ #include <linux/slab.h> #include <linux/delay.h> #include <linux/ide.h> -#include <linux/devfs_fs_kernel.h> #include <linux/spinlock.h> #include <linux/kmod.h> #include <linux/pci.h> @@ -1279,10 +1278,6 @@ static void drive_release_dev (struct device *dev) ide_drive_t *drive = container_of(dev, ide_drive_t, gendev); spin_lock_irq(&ide_lock); - if (drive->devfs_name[0] != '\0') { - devfs_remove(drive->devfs_name); - drive->devfs_name[0] = '\0'; - } ide_remove_drive_from_hwgroup(drive); kfree(drive->id); drive->id = NULL; @@ -1316,12 +1311,6 @@ static void init_gendisk (ide_hwif_t *hwif) drive->gendev.bus = &ide_bus_type; drive->gendev.driver_data = drive; drive->gendev.release = drive_release_dev; - if (drive->present) { - sprintf(drive->devfs_name, "ide/host%d/bus%d/target%d/lun%d", - (hwif->channel && hwif->mate) ? - hwif->mate->index : hwif->index, - hwif->channel, unit, drive->lun); - } } blk_register_region(MKDEV(hwif->major, 0), MAX_DRIVES << PARTN_BITS, THIS_MODULE, ata_probe, ata_lock, hwif); diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 09f3a7dab28..4b91101e12b 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -435,7 +435,6 @@ #include <linux/interrupt.h> #include <linux/jiffies.h> #include <linux/major.h> -#include <linux/devfs_fs_kernel.h> #include <linux/errno.h> #include <linux/genhd.h> #include <linux/slab.h> @@ -4726,9 +4725,6 @@ static void ide_tape_release(struct kref *kref) MKDEV(IDETAPE_MAJOR, tape->minor)); class_device_destroy(idetape_sysfs_class, MKDEV(IDETAPE_MAJOR, tape->minor + 128)); - devfs_remove("%s/mt", drive->devfs_name); - devfs_remove("%s/mtn", drive->devfs_name); - devfs_unregister_tape(g->number); idetape_devs[tape->minor] = NULL; g->private_data = NULL; put_disk(g); @@ -4902,14 +4898,6 @@ static int ide_tape_probe(ide_drive_t *drive) class_device_create(idetape_sysfs_class, NULL, MKDEV(IDETAPE_MAJOR, minor + 128), &drive->gendev, "n%s", tape->name); - devfs_mk_cdev(MKDEV(HWIF(drive)->major, minor), - S_IFCHR | S_IRUGO | S_IWUGO, - "%s/mt", drive->devfs_name); - devfs_mk_cdev(MKDEV(HWIF(drive)->major, minor + 128), - S_IFCHR | S_IRUGO | S_IWUGO, - "%s/mtn", drive->devfs_name); - - g->number = devfs_register_tape(drive->devfs_name); g->fops = &idetape_block_ops; ide_register_region(g); diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c index 59fe358048b..1cdf4420516 100644 --- a/drivers/ide/ide.c +++ b/drivers/ide/ide.c @@ -147,7 +147,6 @@ #include <linux/pci.h> #include <linux/delay.h> #include <linux/ide.h> -#include <linux/devfs_fs_kernel.h> #include <linux/completion.h> #include <linux/reboot.h> #include <linux/cdrom.h> @@ -592,13 +591,8 @@ void ide_unregister(unsigned int index) goto abort; for (unit = 0; unit < MAX_DRIVES; ++unit) { drive = &hwif->drives[unit]; - if (!drive->present) { - if (drive->devfs_name[0] != '\0') { - devfs_remove(drive->devfs_name); - drive->devfs_name[0] = '\0'; - } + if (!drive->present) continue; - } spin_unlock_irq(&ide_lock); device_unregister(&drive->gendev); wait_for_completion(&drive->gendev_rel_comp); @@ -1996,7 +1990,6 @@ EXPORT_SYMBOL_GPL(ide_bus_type); static int __init ide_init(void) { printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n"); - devfs_mk_dir("ide"); system_bus_speed = ide_system_bus_speed(); bus_register(&ide_bus_type); @@ -2074,7 +2067,6 @@ void cleanup_module (void) #ifdef CONFIG_PROC_FS proc_ide_destroy(); #endif - devfs_remove("ide"); bus_unregister(&ide_bus_type); } diff --git a/drivers/input/serio/serio_raw.c b/drivers/input/serio/serio_raw.c index 5a2703b536d..71a8eea816c 100644 --- a/drivers/input/serio/serio_raw.c +++ b/drivers/input/serio/serio_raw.c @@ -16,7 +16,6 @@ #include <linux/init.h> #include <linux/major.h> #include <linux/device.h> -#include <linux/devfs_fs_kernel.h> #include <linux/miscdevice.h> #include <linux/wait.h> #include <linux/mutex.h> diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c index 2e541fa0202..a518ec53102 100644 --- a/drivers/isdn/capi/capi.c +++ b/drivers/isdn/capi/capi.c @@ -39,7 +39,6 @@ #include <linux/init.h> #include <linux/device.h> #include <linux/moduleparam.h> -#include <linux/devfs_fs_kernel.h> #include <linux/isdn/capiutil.h> #include <linux/isdn/capicmd.h> #if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE) @@ -1337,7 +1336,6 @@ static int capinc_tty_init(void) drv->owner = THIS_MODULE; drv->driver_name = "capi_nc"; - drv->devfs_name = "capi/"; drv->name = "capi"; drv->major = capi_ttymajor; drv->minor_start = 0; @@ -1516,8 +1514,6 @@ static int __init capi_init(void) } class_device_create(capi_class, NULL, MKDEV(capi_major, 0), NULL, "capi"); - devfs_mk_cdev(MKDEV(capi_major, 0), S_IFCHR | S_IRUSR | S_IWUSR, - "isdn/capi20"); #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE if (capinc_tty_init() < 0) { @@ -1552,7 +1548,6 @@ static void __exit capi_exit(void) class_device_destroy(capi_class, MKDEV(capi_major, 0)); class_destroy(capi_class); unregister_chrdev(capi_major, "capi20"); - devfs_remove("isdn/capi20"); #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE capinc_tty_exit(); diff --git a/drivers/isdn/gigaset/bas-gigaset.c b/drivers/isdn/gigaset/bas-gigaset.c index 8a45715dd4c..3845defd490 100644 --- a/drivers/isdn/gigaset/bas-gigaset.c +++ b/drivers/isdn/gigaset/bas-gigaset.c @@ -41,7 +41,6 @@ MODULE_PARM_DESC(cidmode, "Call-ID mode"); #define GIGASET_MINORS 1 #define GIGASET_MINOR 16 #define GIGASET_MODULENAME "bas_gigaset" -#define GIGASET_DEVFSNAME "gig/bas/" #define GIGASET_DEVNAME "ttyGB" /* length limit according to Siemens 3070usb-protokoll.doc ch. 2.1 */ @@ -2349,8 +2348,7 @@ static int __init bas_gigaset_init(void) /* allocate memory for our driver state and intialize it */ if ((driver = gigaset_initdriver(GIGASET_MINOR, GIGASET_MINORS, GIGASET_MODULENAME, GIGASET_DEVNAME, - GIGASET_DEVFSNAME, &gigops, - THIS_MODULE)) == NULL) + &gigops, THIS_MODULE)) == NULL) goto error; /* allocate memory for our device state and intialize it */ diff --git a/drivers/isdn/gigaset/common.c b/drivers/isdn/gigaset/common.c index 2a56bf33a67..aca165d43aa 100644 --- a/drivers/isdn/gigaset/common.c +++ b/drivers/isdn/gigaset/common.c @@ -1092,14 +1092,12 @@ EXPORT_SYMBOL_GPL(gigaset_freedriver); * minors Number of minors this driver can handle * procname Name of the driver * devname Name of the device files (prefix without minor number) - * devfsname Devfs name of the device files without %d * return value: * Pointer to the gigaset_driver structure on success, NULL on failure. */ struct gigaset_driver *gigaset_initdriver(unsigned minor, unsigned minors, const char *procname, const char *devname, - const char *devfsname, const struct gigaset_ops *ops, struct module *owner) { @@ -1139,7 +1137,7 @@ struct gigaset_driver *gigaset_initdriver(unsigned minor, unsigned minors, drv->cs[i].minor_index = i; } - gigaset_if_initdriver(drv, procname, devname, devfsname); + gigaset_if_initdriver(drv, procname, devname); spin_lock_irqsave(&driver_lock, flags); list_add(&drv->list, &drivers); diff --git a/drivers/isdn/gigaset/gigaset.h b/drivers/isdn/gigaset/gigaset.h index 8d63d822104..1ca3bfdef51 100644 --- a/drivers/isdn/gigaset/gigaset.h +++ b/drivers/isdn/gigaset/gigaset.h @@ -769,7 +769,6 @@ void gigaset_block_channels(struct cardstate *cs); struct gigaset_driver *gigaset_initdriver(unsigned minor, unsigned minors, const char *procname, const char *devname, - const char *devfsname, const struct gigaset_ops *ops, struct module *owner); @@ -892,7 +891,7 @@ int gigaset_fill_inbuf(struct inbuf_t *inbuf, const unsigned char *src, /* initialize interface */ void gigaset_if_initdriver(struct gigaset_driver *drv, const char *procname, - const char *devname, const char *devfsname); + const char *devname); /* release interface */ void gigaset_if_freedriver(struct gigaset_driver *drv); /* add minor */ diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c index 74fd234956c..bd2e4267528 100644 --- a/drivers/isdn/gigaset/interface.c +++ b/drivers/isdn/gigaset/interface.c @@ -673,10 +673,9 @@ EXPORT_SYMBOL_GPL(gigaset_if_receive); * drv Driver * procname Name of the driver (e.g. for /proc/tty/drivers) * devname Name of the device files (prefix without minor number) - * devfsname Devfs name of the device files without %d */ void gigaset_if_initdriver(struct gigaset_driver *drv, const char *procname, - const char *devname, const char *devfsname) + const char *devname) { unsigned minors = drv->minors; int ret; @@ -692,7 +691,7 @@ void gigaset_if_initdriver(struct gigaset_driver *drv, const char *procname, tty->major = GIG_MAJOR, tty->type = TTY_DRIVER_TYPE_SERIAL, tty->subtype = SERIAL_TYPE_NORMAL, - tty->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS, + tty->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; tty->driver_name = procname; tty->name = devname; @@ -700,7 +699,6 @@ void gigaset_if_initdriver(struct gigaset_driver *drv, const char *procname, tty->num = drv->minors; tty->owner = THIS_MODULE; - tty->devfs_name = devfsname; tty->init_termios = tty_std_termios; //FIXME tty->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; //FIXME diff --git a/drivers/isdn/gigaset/usb-gigaset.c b/drivers/isdn/gigaset/usb-gigaset.c index d86ab68114b..6e05d9d4a51 100644 --- a/drivers/isdn/gigaset/usb-gigaset.c +++ b/drivers/isdn/gigaset/usb-gigaset.c @@ -41,7 +41,6 @@ MODULE_PARM_DESC(cidmode, "Call-ID mode"); #define GIGASET_MINORS 1 #define GIGASET_MINOR 8 #define GIGASET_MODULENAME "usb_gigaset" -#define GIGASET_DEVFSNAME "gig/usb/" #define GIGASET_DEVNAME "ttyGU" #define IF_WRITEBUF 2000 //FIXME // WAKEUP_CHARS: 256 @@ -896,8 +895,7 @@ static int __init usb_gigaset_init(void) /* allocate memory for our driver state and intialize it */ if ((driver = gigaset_initdriver(GIGASET_MINOR, GIGASET_MINORS, GIGASET_MODULENAME, GIGASET_DEVNAME, - GIGASET_DEVFSNAME, &ops, - THIS_MODULE)) == NULL) + &ops, THIS_MODULE)) == NULL) goto error; /* allocate memory for our device state and intialize it */ diff --git a/drivers/isdn/hardware/eicon/divamnt.c b/drivers/isdn/hardware/eicon/divamnt.c index 6146f7633be..b163c590918 100644 --- a/drivers/isdn/hardware/eicon/divamnt.c +++ b/drivers/isdn/hardware/eicon/divamnt.c @@ -17,7 +17,6 @@ #include <linux/sched.h> #include <linux/smp_lock.h> #include <linux/poll.h> -#include <linux/devfs_fs_kernel.h> #include <asm/uaccess.h> #include "platform.h" @@ -178,7 +177,6 @@ static struct file_operations divas_maint_fops = { static void divas_maint_unregister_chrdev(void) { - devfs_remove(DEVNAME); unregister_chrdev(major, DEVNAME); } @@ -190,7 +188,6 @@ static int DIVA_INIT_FUNCTION divas_maint_register_chrdev(void) DRIVERLNAME); return (0); } - devfs_mk_cdev(MKDEV(major, 0), S_IFCHR|S_IRUSR|S_IWUSR, DEVNAME); return (1); } diff --git a/drivers/isdn/hardware/eicon/divasi.c b/drivers/isdn/hardware/eicon/divasi.c index df715b47e2b..6e7d89a31c1 100644 --- a/drivers/isdn/hardware/eicon/divasi.c +++ b/drivers/isdn/hardware/eicon/divasi.c @@ -19,7 +19,6 @@ #include <linux/poll.h> #include <linux/proc_fs.h> #include <linux/skbuff.h> -#include <linux/devfs_fs_kernel.h> #include <asm/uaccess.h> #include "platform.h" @@ -145,7 +144,6 @@ static struct file_operations divas_idi_fops = { static void divas_idi_unregister_chrdev(void) { - devfs_remove(DEVNAME); unregister_chrdev(major, DEVNAME); } @@ -157,7 +155,6 @@ static int DIVA_INIT_FUNCTION divas_idi_register_chrdev(void) DRIVERLNAME); return (0); } - devfs_mk_cdev(MKDEV(major, 0), S_IFCHR|S_IRUSR|S_IWUSR, DEVNAME); return (1); } diff --git a/drivers/isdn/hardware/eicon/divasmain.c b/drivers/isdn/hardware/eicon/divasmain.c index c9b26e86d18..9dee6a39104 100644 --- a/drivers/isdn/hardware/eicon/divasmain.c +++ b/drivers/isdn/hardware/eicon/divasmain.c @@ -14,7 +14,6 @@ #include <linux/init.h> #include <linux/kernel.h> #include <linux/sched.h> -#include <linux/devfs_fs_kernel.h> #include <asm/uaccess.h> #include <asm/io.h> #include <linux/ioport.h> @@ -678,7 +677,6 @@ static struct file_operations divas_fops = { static void divas_unregister_chrdev(void) { - devfs_remove(DEVNAME); unregister_chrdev(major, DEVNAME); } @@ -690,7 +688,6 @@ static int DIVA_INIT_FUNCTION divas_register_chrdev(void) DRIVERLNAME); return (0); } - devfs_mk_cdev(MKDEV(major, 0), S_IFCHR|S_IRUSR|S_IWUSR, DEVNAME); return (1); } diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c index 433389daedb..0a53a990c10 100644 --- a/drivers/isdn/i4l/isdn_tty.c +++ b/drivers/isdn/i4l/isdn_tty.c @@ -1890,14 +1890,13 @@ isdn_tty_modem_init(void) if (!m->tty_modem) return -ENOMEM; m->tty_modem->name = "ttyI"; - m->tty_modem->devfs_name = "isdn/ttyI"; m->tty_modem->major = ISDN_TTY_MAJOR; m->tty_modem->minor_start = 0; m->tty_modem->type = TTY_DRIVER_TYPE_SERIAL; m->tty_modem->subtype = SERIAL_TYPE_NORMAL; m->tty_modem->init_termios = tty_std_termios; m->tty_modem->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; - m->tty_modem->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS; + m->tty_modem->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; m->tty_modem->driver_name = "isdn_tty"; tty_set_operations(m->tty_modem, &modem_ops); retval = tty_register_driver(m->tty_modem); diff --git a/drivers/macintosh/adb.c b/drivers/macintosh/adb.c index 259fd8973ce..9f1a049dc22 100644 --- a/drivers/macintosh/adb.c +++ b/drivers/macintosh/adb.c @@ -36,7 +36,6 @@ #include <linux/spinlock.h> #include <linux/completion.h> #include <linux/device.h> -#include <linux/devfs_fs_kernel.h> #include <asm/uaccess.h> #include <asm/semaphore.h> @@ -904,8 +903,6 @@ adbdev_init(void) return; } - devfs_mk_cdev(MKDEV(ADB_MAJOR, 0), S_IFCHR | S_IRUSR | S_IWUSR, "adb"); - adb_dev_class = class_create(THIS_MODULE, "adb"); if (IS_ERR(adb_dev_class)) return; diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c index 3edb3477f98..d13bb15a8a0 100644 --- a/drivers/md/dm-ioctl.c +++ b/drivers/md/dm-ioctl.c @@ -13,7 +13,6 @@ #include <linux/init.h> #include <linux/wait.h> #include <linux/slab.h> -#include <linux/devfs_fs_kernel.h> #include <linux/dm-ioctl.h> #include <linux/hdreg.h> @@ -68,14 +67,12 @@ static int dm_hash_init(void) { init_buckets(_name_buckets); init_buckets(_uuid_buckets); - devfs_mk_dir(DM_DIR); return 0; } static void dm_hash_exit(void) { dm_hash_remove_all(0); - devfs_remove(DM_DIR); } /*----------------------------------------------------------------- @@ -172,25 +169,6 @@ static void free_cell(struct hash_cell *hc) } /* - * devfs stuff. - */ -static int register_with_devfs(struct hash_cell *hc) -{ - struct gendisk *disk = dm_disk(hc->md); - - devfs_mk_bdev(MKDEV(disk->major, disk->first_minor), - S_IFBLK | S_IRUSR | S_IWUSR | S_IRGRP, - DM_DIR "/%s", hc->name); - return 0; -} - -static int unregister_with_devfs(struct hash_cell *hc) -{ - devfs_remove(DM_DIR"/%s", hc->name); - return 0; -} - -/* * The kdev_t and uuid of a device can never change once it is * initially inserted. */ @@ -226,7 +204,6 @@ static int dm_hash_insert(const char *name, const char *uuid, struct mapped_devi } list_add(&cell->uuid_list, _uuid_buckets + hash_str(uuid)); } - register_with_devfs(cell); dm_get(md); dm_set_mdptr(md, cell); up_write(&_hash_lock); @@ -246,7 +223,6 @@ static void __hash_remove(struct hash_cell *hc) /* remove from the dev hash */ list_del(&hc->uuid_list); list_del(&hc->name_list); - unregister_with_devfs(hc); dm_set_mdptr(hc->md, NULL); table = dm_get_table(hc->md); @@ -342,16 +318,11 @@ static int dm_hash_rename(const char *old, const char *new) /* * rename and move the name cell. */ - unregister_with_devfs(hc); - list_del(&hc->name_list); old_name = hc->name; hc->name = new_name; list_add(&hc->name_list, _name_buckets + hash_str(new_name)); - /* rename the device node in devfs */ - register_with_devfs(hc); - /* * Wake up any dm event waiters. */ @@ -1501,7 +1472,6 @@ static struct file_operations _ctl_fops = { static struct miscdevice _dm_misc = { .minor = MISC_DYNAMIC_MINOR, .name = DM_NAME, - .devfs_name = "mapper/control", .fops = &_ctl_fops }; diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 3ed2e53b9eb..c99bf9f0175 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -167,7 +167,7 @@ static void local_exit(void) bioset_free(dm_set); if (unregister_blkdev(_major, _name) < 0) - DMERR("devfs_unregister_blkdev failed"); + DMERR("unregister_blkdev failed"); _major = 0; diff --git a/drivers/md/md.c b/drivers/md/md.c index 306268ec99f..2ec1b3520a0 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -39,7 +39,6 @@ #include <linux/raid/md.h> #include <linux/raid/bitmap.h> #include <linux/sysctl.h> -#include <linux/devfs_fs_kernel.h> #include <linux/buffer_head.h> /* for invalidate_bdev */ #include <linux/suspend.h> #include <linux/poll.h> @@ -2911,13 +2910,10 @@ static struct kobject *md_probe(dev_t dev, int *part, void *data) } disk->major = MAJOR(dev); disk->first_minor = unit << shift; - if (partitioned) { + if (partitioned) sprintf(disk->disk_name, "md_d%d", unit); - sprintf(disk->devfs_name, "md/d%d", unit); - } else { + else sprintf(disk->disk_name, "md%d", unit); - sprintf(disk->devfs_name, "md/%d", unit); - } disk->fops = &md_fops; disk->private_data = mddev; disk->queue = mddev->queue; @@ -5538,8 +5534,6 @@ static void md_geninit(void) static int __init md_init(void) { - int minor; - printk(KERN_INFO "md: md driver %d.%d.%d MAX_MD_DEVS=%d," " MD_SB_DISKS=%d\n", MD_MAJOR_VERSION, MD_MINOR_VERSION, @@ -5553,23 +5547,11 @@ static int __init md_init(void) unregister_blkdev(MAJOR_NR, "md"); return -1; } - devfs_mk_dir("md"); blk_register_region(MKDEV(MAJOR_NR, 0), MAX_MD_DEVS, THIS_MODULE, md_probe, NULL, NULL); blk_register_region(MKDEV(mdp_major, 0), MAX_MD_DEVS<<MdpMinorShift, THIS_MODULE, md_probe, NULL, NULL); - for (minor=0; minor < MAX_MD_DEVS; ++minor) - devfs_mk_bdev(MKDEV(MAJOR_NR, minor), - S_IFBLK|S_IRUSR|S_IWUSR, - "md/%d", minor); - - for (minor=0; minor < MAX_MD_DEVS; ++minor) - devfs_mk_bdev(MKDEV(mdp_major, minor<<MdpMinorShift), - S_IFBLK|S_IRUSR|S_IWUSR, - "md/mdp%d", minor); - - register_reboot_notifier(&md_notifier); raid_table_header = register_sysctl_table(raid_root_table, 1); @@ -5625,15 +5607,9 @@ static __exit void md_exit(void) { mddev_t *mddev; struct list_head *tmp; - int i; + blk_unregister_region(MKDEV(MAJOR_NR,0), MAX_MD_DEVS); blk_unregister_region(MKDEV(mdp_major,0), MAX_MD_DEVS << MdpMinorShift); - for (i=0; i < MAX_MD_DEVS; i++) - devfs_remove("md/%d", i); - for (i=0; i < MAX_MD_DEVS; i++) - devfs_remove("md/d%d", i); - - devfs_remove("md"); unregister_blkdev(MAJOR_NR,"md"); unregister_blkdev(mdp_major, "mdp"); diff --git a/drivers/media/dvb/dvb-core/dvbdev.c b/drivers/media/dvb/dvb-core/dvbdev.c index 134c2bbbeeb..40774feb895 100644 --- a/drivers/media/dvb/dvb-core/dvbdev.c +++ b/drivers/media/dvb/dvb-core/dvbdev.c @@ -231,10 +231,6 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, mutex_unlock(&dvbdev_register_lock); - devfs_mk_cdev(MKDEV(DVB_MAJOR, nums2minor(adap->num, type, id)), - S_IFCHR | S_IRUSR | S_IWUSR, - "dvb/adapter%d/%s%d", adap->num, dnames[type], id); - class_device_create(dvb_class, NULL, MKDEV(DVB_MAJOR, nums2minor(adap->num, type, id)), adap->device, "dvb%d.%s%d", adap->num, dnames[type], id); @@ -252,9 +248,6 @@ void dvb_unregister_device(struct dvb_device *dvbdev) if (!dvbdev) return; - devfs_remove("dvb/adapter%d/%s%d", dvbdev->adapter->num, - dnames[dvbdev->type], dvbdev->id); - class_device_destroy(dvb_class, MKDEV(DVB_MAJOR, nums2minor(dvbdev->adapter->num, dvbdev->type, dvbdev->id))); @@ -302,7 +295,6 @@ int dvb_register_adapter(struct dvb_adapter *adap, const char *name, struct modu printk ("DVB: registering new adapter (%s).\n", name); - devfs_mk_dir("dvb/adapter%d", num); adap->num = num; adap->name = name; adap->module = module; @@ -319,8 +311,6 @@ EXPORT_SYMBOL(dvb_register_adapter); int dvb_unregister_adapter(struct dvb_adapter *adap) { - devfs_remove("dvb/adapter%d", adap->num); - if (mutex_lock_interruptible(&dvbdev_register_lock)) return -ERESTARTSYS; list_del (&adap->list_head); @@ -410,8 +400,6 @@ static int __init init_dvbdev(void) goto error; } - devfs_mk_dir("dvb"); - dvb_class = class_create(THIS_MODULE, "dvb"); if (IS_ERR(dvb_class)) { retval = PTR_ERR(dvb_class); @@ -428,7 +416,6 @@ error: static void __exit exit_dvbdev(void) { - devfs_remove("dvb"); class_destroy(dvb_class); cdev_del(&dvb_device_cdev); unregister_chrdev_region(MKDEV(DVB_MAJOR, 0), MAX_DVB_MINORS); diff --git a/drivers/media/dvb/dvb-core/dvbdev.h b/drivers/media/dvb/dvb-core/dvbdev.h index d7a976d040d..7a7f75fd168 100644 --- a/drivers/media/dvb/dvb-core/dvbdev.h +++ b/drivers/media/dvb/dvb-core/dvbdev.h @@ -27,7 +27,6 @@ #include <linux/poll.h> #include <linux/fs.h> #include <linux/list.h> -#include <linux/devfs_fs_kernel.h> #include <linux/smp_lock.h> #define DVB_MAJOR 212 diff --git a/drivers/media/dvb/ttpci/av7110.h b/drivers/media/dvb/ttpci/av7110.h index 3e2e12124ba..9c79696da08 100644 --- a/drivers/media/dvb/ttpci/av7110.h +++ b/drivers/media/dvb/ttpci/av7110.h @@ -6,10 +6,6 @@ #include <linux/netdevice.h> #include <linux/i2c.h> -#ifdef CONFIG_DEVFS_FS -#include <linux/devfs_fs_kernel.h> -#endif - #include <linux/dvb/video.h> #include <linux/dvb/audio.h> #include <linux/dvb/dmx.h> diff --git a/drivers/media/dvb/ttusb-budget/dvb-ttusb-budget.c b/drivers/media/dvb/ttusb-budget/dvb-ttusb-budget.c index 14559ef6153..336b2fe1a5f 100644 --- a/drivers/media/dvb/ttusb-budget/dvb-ttusb-budget.c +++ b/drivers/media/dvb/ttusb-budget/dvb-ttusb-budget.c @@ -126,10 +126,6 @@ struct ttusb { int revision; -#if 0 - devfs_handle_t stc_devfs_handle; -#endif - struct dvb_frontend* fe; }; @@ -1746,13 +1742,6 @@ static int ttusb_probe(struct usb_interface *intf, const struct usb_device_id *i return -ENODEV; } -#if 0 - ttusb->stc_devfs_handle = - devfs_register(ttusb->adapter->devfs_handle, TTUSB_BUDGET_NAME, - DEVFS_FL_DEFAULT, 0, 192, - S_IFCHR | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP - | S_IROTH | S_IWOTH, &stc_fops, ttusb); -#endif usb_set_intfdata(intf, (void *) ttusb); frontend_init(ttusb); diff --git a/drivers/media/radio/miropcm20-rds.c b/drivers/media/radio/miropcm20-rds.c index 87b37b7691d..c1b1db65e66 100644 --- a/drivers/media/radio/miropcm20-rds.c +++ b/drivers/media/radio/miropcm20-rds.c @@ -115,7 +115,6 @@ static struct file_operations rds_fops = { static struct miscdevice rds_miscdev = { .minor = MISC_DYNAMIC_MINOR, .name = "radiotext", - .devfs_name = "v4l/rds/radiotext", .fops = &rds_fops, }; diff --git a/drivers/media/video/arv.c b/drivers/media/video/arv.c index 6e08e32346e..ae14f5f3203 100644 --- a/drivers/media/video/arv.c +++ b/drivers/media/video/arv.c @@ -20,7 +20,6 @@ #include <linux/config.h> #include <linux/init.h> -#include <linux/devfs_fs_kernel.h> #include <linux/module.h> #include <linux/delay.h> #include <linux/errno.h> diff --git a/drivers/media/video/videodev.c b/drivers/media/video/videodev.c index 2dfa7f23d0c..b26ebaff226 100644 --- a/drivers/media/video/videodev.c +++ b/drivers/media/video/videodev.c @@ -37,7 +37,6 @@ #include <linux/init.h> #include <linux/kmod.h> #include <linux/slab.h> -#include <linux/devfs_fs_kernel.h> #include <asm/uaccess.h> #include <asm/system.h> @@ -1563,10 +1562,6 @@ int video_register_device(struct video_device *vfd, int type, int nr) video_device[i]=vfd; vfd->minor=i; mutex_unlock(&videodev_lock); - - sprintf(vfd->devfs_name, "v4l/%s%d", name_base, i - base); - devfs_mk_cdev(MKDEV(VIDEO_MAJOR, vfd->minor), - S_IFCHR | S_IRUSR | S_IWUSR, vfd->devfs_name); mutex_init(&vfd->lock); /* sysfs class */ @@ -1575,7 +1570,7 @@ int video_register_device(struct video_device *vfd, int type, int nr) vfd->class_dev.dev = vfd->dev; vfd->class_dev.class = &video_class; vfd->class_dev.devt = MKDEV(VIDEO_MAJOR, vfd->minor); - strlcpy(vfd->class_dev.class_id, vfd->devfs_name + 4, BUS_ID_SIZE); + sprintf(vfd->class_dev.class_id, "%s%d", name_base, i - base); class_device_register(&vfd->class_dev); class_device_create_file(&vfd->class_dev, &class_device_attr_name); @@ -1604,7 +1599,6 @@ void video_unregister_device(struct video_device *vfd) if(video_device[vfd->minor]!=vfd) panic("videodev: bad unregister"); - devfs_remove(vfd->devfs_name); video_device[vfd->minor]=NULL; class_device_unregister(&vfd->class_dev); mutex_unlock(&videodev_lock); diff --git a/drivers/message/i2o/i2o_block.c b/drivers/message/i2o/i2o_block.c index 7d4c5497785..1ddc2fb429d 100644 --- a/drivers/message/i2o/i2o_block.c +++ b/drivers/message/i2o/i2o_block.c @@ -1089,7 +1089,6 @@ static int i2o_block_probe(struct device *dev) gd = i2o_blk_dev->gd; gd->first_minor = unit << 4; sprintf(gd->disk_name, "i2o/hd%c", 'a' + unit); - sprintf(gd->devfs_name, "i2o/hd%c", 'a' + unit); gd->driverfs_dev = &i2o_dev->device; /* setup request queue */ diff --git a/drivers/mmc/mmc_block.c b/drivers/mmc/mmc_block.c index 587458b370b..115cc21094b 100644 --- a/drivers/mmc/mmc_block.c +++ b/drivers/mmc/mmc_block.c @@ -27,7 +27,6 @@ #include <linux/hdreg.h> #include <linux/kdev_t.h> #include <linux/blkdev.h> -#include <linux/devfs_fs_kernel.h> #include <linux/mutex.h> #include <linux/mmc/card.h> @@ -409,7 +408,6 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card) */ sprintf(md->disk->disk_name, "mmcblk%d", devidx); - sprintf(md->disk->devfs_name, "mmc/blk%d", devidx); blk_queue_hardsect_size(md->queue.queue, 1 << md->block_bits); @@ -555,7 +553,6 @@ static int __init mmc_blk_init(void) if (major == 0) major = res; - devfs_mk_dir("mmc"); return mmc_register_driver(&mmc_driver); out: @@ -565,7 +562,6 @@ static int __init mmc_blk_init(void) static void __exit mmc_blk_exit(void) { mmc_unregister_driver(&mmc_driver); - devfs_remove("mmc"); unregister_blkdev(major, "mmc"); } diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c index d643a097faa..425ff5b117f 100644 --- a/drivers/net/ppp_generic.c +++ b/drivers/net/ppp_generic.c @@ -28,7 +28,6 @@ #include <linux/kmod.h> #include <linux/init.h> #include <linux/list.h> -#include <linux/devfs_fs_kernel.h> #include <linux/netdevice.h> #include <linux/poll.h> #include <linux/ppp_defs.h> @@ -863,10 +862,6 @@ static int __init ppp_init(void) goto out_chrdev; } class_device_create(ppp_class, NULL, MKDEV(PPP_MAJOR, 0), NULL, "ppp"); - err = devfs_mk_cdev(MKDEV(PPP_MAJOR, 0), - S_IFCHR|S_IRUSR|S_IWUSR, "ppp"); - if (err) - goto out_class; } out: @@ -874,9 +869,6 @@ out: printk(KERN_ERR "failed to register PPP device (%d)\n", err); return err; -out_class: - class_device_destroy(ppp_class, MKDEV(PPP_MAJOR,0)); - class_destroy(ppp_class); out_chrdev: unregister_chrdev(PPP_MAJOR, "ppp"); goto out; @@ -2681,7 +2673,6 @@ static void __exit ppp_cleanup(void) cardmap_destroy(&all_ppp_units); if (unregister_chrdev(PPP_MAJOR, "ppp") != 0) printk(KERN_ERR "PPP: failed to unregister PPP device\n"); - devfs_remove("ppp"); class_device_destroy(ppp_class, MKDEV(PPP_MAJOR, 0)); class_destroy(ppp_class); } diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 6c62d5c8826..732c5edec2e 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -780,7 +780,6 @@ static struct miscdevice tun_miscdev = { .minor = TUN_MINOR, .name = "tun", .fops = &tun_fops, - .devfs_name = "net/tun", }; /* ethtool interface */ diff --git a/drivers/net/wan/cosa.c b/drivers/net/wan/cosa.c index e392ee8b37a..be5e33814cb 100644 --- a/drivers/net/wan/cosa.c +++ b/drivers/net/wan/cosa.c @@ -85,7 +85,6 @@ #include <linux/slab.h> #include <linux/poll.h> #include <linux/fs.h> -#include <linux/devfs_fs_kernel.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/errno.h> @@ -393,7 +392,6 @@ static int __init cosa_init(void) err = -ENODEV; goto out; } - devfs_mk_dir("cosa"); cosa_class = class_create(THIS_MODULE, "cosa"); if (IS_ERR(cosa_class)) { err = PTR_ERR(cosa_class); @@ -402,13 +400,6 @@ static int __init cosa_init(void) for (i=0; i<nr_cards; i++) { class_device_create(cosa_class, NULL, MKDEV(cosa_major, i), NULL, "cosa%d", i); - err = devfs_mk_cdev(MKDEV(cosa_major, i), - S_IFCHR|S_IRUSR|S_IWUSR, - "cosa/%d", i); - if (err) { - class_device_destroy(cosa_class, MKDEV(cosa_major, i)); - goto out_chrdev; - } } err = 0; goto out; @@ -426,12 +417,9 @@ static void __exit cosa_exit(void) int i; printk(KERN_INFO "Unloading the cosa module\n"); - for (i=0; i<nr_cards; i++) { + for (i=0; i<nr_cards; i++) class_device_destroy(cosa_class, MKDEV(cosa_major, i)); - devfs_remove("cosa/%d", i); - } class_destroy(cosa_class); - devfs_remove("cosa"); for (cosa=cosa_cards; nr_cards--; cosa++) { /* Clean up the per-channel data */ for (i=0; i<cosa->nchannels; i++) { diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index bafcd2f20ae..2dc179b14ce 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -1834,7 +1834,6 @@ dasd_exit(void) } dasd_gendisk_exit(); dasd_devmap_exit(); - devfs_remove("dasd"); if (dasd_debug_area != NULL) { debug_unregister(dasd_debug_area); dasd_debug_area = NULL; @@ -2107,9 +2106,6 @@ dasd_init(void) dasd_diag_discipline_pointer = NULL; - rc = devfs_mk_dir("dasd"); - if (rc) - goto failed; rc = dasd_devmap_init(); if (rc) goto failed; diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c index fce2835e7d1..61ffde718a7 100644 --- a/drivers/s390/block/dasd_genhd.c +++ b/drivers/s390/block/dasd_genhd.c @@ -68,8 +68,6 @@ dasd_gendisk_alloc(struct dasd_device *device) } len += sprintf(gdp->disk_name + len, "%c", 'a'+(device->devindex%26)); - sprintf(gdp->devfs_name, "dasd/%s", device->cdev->dev.bus_id); - if (device->features & DASD_FEATURE_READONLY) set_disk_ro(gdp, 1); gdp->private_data = device; diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index 03a83efc34c..3ccf06d28ba 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -54,7 +54,6 @@ #include <linux/module.h> #include <linux/wait.h> #include <linux/blkdev.h> -#include <linux/devfs_fs_kernel.h> #include <linux/genhd.h> #include <linux/hdreg.h> #include <linux/interrupt.h> diff --git a/drivers/s390/block/xpram.c b/drivers/s390/block/xpram.c index 54ecd548c31..4c1e56b9b98 100644 --- a/drivers/s390/block/xpram.c +++ b/drivers/s390/block/xpram.c @@ -36,7 +36,6 @@ #include <linux/hdreg.h> /* HDIO_GETGEO */ #include <linux/sysdev.h> #include <linux/bio.h> -#include <linux/devfs_fs_kernel.h> #include <asm/uaccess.h> #define XPRAM_NAME "xpram" @@ -439,8 +438,6 @@ static int __init xpram_setup_blkdev(void) if (rc < 0) goto out; - devfs_mk_dir("slram"); - /* * Assign the other needed values: make request function, sizes and * hardsect size. All the minor devices feature the same value. @@ -469,14 +466,12 @@ static int __init xpram_setup_blkdev(void) disk->private_data = &xpram_devices[i]; disk->queue = xpram_queue; sprintf(disk->disk_name, "slram%d", i); - sprintf(disk->devfs_name, "slram/%d", i); set_capacity(disk, xpram_sizes[i] << 1); add_disk(disk); } return 0; out_unreg: - devfs_remove("slram"); unregister_blkdev(XPRAM_MAJOR, XPRAM_NAME); out: while (i--) @@ -495,7 +490,6 @@ static void __exit xpram_exit(void) put_disk(xpram_disks[i]); } unregister_blkdev(XPRAM_MAJOR, XPRAM_NAME); - devfs_remove("slram"); blk_cleanup_queue(xpram_queue); sysdev_unregister(&xpram_sys_device); sysdev_class_unregister(&xpram_sysclass); diff --git a/drivers/s390/char/monreader.c b/drivers/s390/char/monreader.c index fb7bc9e5eeb..a138b151009 100644 --- a/drivers/s390/char/monreader.c +++ b/drivers/s390/char/monreader.c @@ -586,7 +586,6 @@ static struct file_operations mon_fops = { static struct miscdevice mon_dev = { .name = "monreader", - .devfs_name = "monreader", .fops = &mon_fops, .minor = MISC_DYNAMIC_MINOR, }; diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c index 9a141776873..7d26a3e4cb8 100644 --- a/drivers/s390/char/tty3270.c +++ b/drivers/s390/char/tty3270.c @@ -1785,7 +1785,6 @@ tty3270_init(void) * proc_entry, set_termios, flush_buffer, set_ldisc, write_proc */ driver->owner = THIS_MODULE; - driver->devfs_name = "ttyTUB/"; driver->driver_name = "ttyTUB"; driver->name = "ttyTUB"; driver->major = IBM_TTY3270_MAJOR; @@ -1793,7 +1792,7 @@ tty3270_init(void) driver->type = TTY_DRIVER_TYPE_SYSTEM; driver->subtype = SYSTEM_TYPE_TTY; driver->init_termios = tty_std_termios; - driver->flags = TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_NO_DEVFS; + driver->flags = TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_DYNAMIC_DEV; tty_set_operations(driver, &tty3270_ops); ret = tty_register_driver(driver); if (ret) { diff --git a/drivers/s390/crypto/z90main.c b/drivers/s390/crypto/z90main.c index 982acc7303e..b2f20ab8431 100644 --- a/drivers/s390/crypto/z90main.c +++ b/drivers/s390/crypto/z90main.c @@ -411,7 +411,6 @@ static struct miscdevice z90crypt_misc_device = { .minor = Z90CRYPT_MINOR, .name = DEV_NAME, .fops = &z90crypt_fops, - .devfs_name = DEV_NAME }; /** diff --git a/drivers/sbus/char/bpp.c b/drivers/sbus/char/bpp.c index ccb20a6f5f3..385f4f76831 100644 --- a/drivers/sbus/char/bpp.c +++ b/drivers/sbus/char/bpp.c @@ -20,7 +20,6 @@ #include <linux/timer.h> #include <linux/ioport.h> #include <linux/major.h> -#include <linux/devfs_fs_kernel.h> #include <asm/uaccess.h> #include <asm/io.h> @@ -1031,11 +1030,6 @@ static int __init bpp_init(void) instances[idx].opened = 0; probeLptPort(idx); } - devfs_mk_dir("bpp"); - for (idx = 0; idx < BPP_NO; idx++) { - devfs_mk_cdev(MKDEV(BPP_MAJOR, idx), - S_IFCHR | S_IRUSR | S_IWUSR, "bpp/%d", idx); - } return 0; } @@ -1044,9 +1038,6 @@ static void __exit bpp_cleanup(void) { unsigned idx; - for (idx = 0; idx < BPP_NO; idx++) - devfs_remove("bpp/%d", idx); - devfs_remove("bpp"); unregister_chrdev(BPP_MAJOR, dev_name); for (idx = 0; idx < BPP_NO; idx++) { diff --git a/drivers/sbus/char/vfc.h b/drivers/sbus/char/vfc.h index 8045cd5e7cb..63941a259b9 100644 --- a/drivers/sbus/char/vfc.h +++ b/drivers/sbus/char/vfc.h @@ -1,8 +1,6 @@ #ifndef _LINUX_VFC_H_ #define _LINUX_VFC_H_ -#include <linux/devfs_fs_kernel.h> - /* * The control register for the vfc is at offset 0x4000 * The first field ram bank is located at offset 0x5000 diff --git a/drivers/sbus/char/vfc_dev.c b/drivers/sbus/char/vfc_dev.c index ddcd330b9e8..55b2b31bd7a 100644 --- a/drivers/sbus/char/vfc_dev.c +++ b/drivers/sbus/char/vfc_dev.c @@ -164,10 +164,6 @@ int init_vfc_device(struct sbus_dev *sdev,struct vfc_dev *dev, int instance) return -EINVAL; if (init_vfc_hw(dev)) return -EIO; - - devfs_mk_cdev(MKDEV(VFC_MAJOR, instance), - S_IFCHR | S_IRUSR | S_IWUSR, - "vfc/%d", instance); return 0; } @@ -677,7 +673,6 @@ static int vfc_probe(void) kfree(vfc_dev_lst); return -EIO; } - devfs_mk_dir("vfc"); instance = 0; for_all_sbusdev(sdev, sbus) { if (strcmp(sdev->prom_name, "vfc") == 0) { @@ -717,7 +712,6 @@ static void deinit_vfc_device(struct vfc_dev *dev) { if(dev == NULL) return; - devfs_remove("vfc/%d", dev->instance); sbus_iounmap(dev->regs, sizeof(struct vfc_regs)); kfree(dev); } @@ -731,7 +725,6 @@ void cleanup_module(void) for (devp = vfc_dev_lst; *devp; devp++) deinit_vfc_device(*devp); - devfs_remove("vfc"); kfree(vfc_dev_lst); return; } diff --git a/drivers/serial/21285.c b/drivers/serial/21285.c index 7572665a885..9fd0de4b7af 100644 --- a/drivers/serial/21285.c +++ b/drivers/serial/21285.c @@ -479,7 +479,6 @@ static struct uart_driver serial21285_reg = { .owner = THIS_MODULE, .driver_name = "ttyFB", .dev_name = "ttyFB", - .devfs_name = "ttyFB", .major = SERIAL_21285_MAJOR, .minor = SERIAL_21285_MINOR, .nr = 1, diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c index bbf78aaf9e0..f361b356bd1 100644 --- a/drivers/serial/8250.c +++ b/drivers/serial/8250.c @@ -2354,7 +2354,6 @@ int __init serial8250_start_console(struct uart_port *port, char *options) static struct uart_driver serial8250_reg = { .owner = THIS_MODULE, .driver_name = "serial", - .devfs_name = "tts/", .dev_name = "ttyS", .major = TTY_MAJOR, .minor = 64, diff --git a/drivers/serial/at91_serial.c b/drivers/serial/at91_serial.c index db5b25fafed..df9500bdade 100644 --- a/drivers/serial/at91_serial.c +++ b/drivers/serial/at91_serial.c @@ -863,7 +863,6 @@ static struct uart_driver at91_uart = { .owner = THIS_MODULE, .driver_name = "at91_serial", .dev_name = AT91_DEVICENAME, - .devfs_name = AT91_DEVICENAME, .major = SERIAL_AT91_MAJOR, .minor = MINOR_START, .nr = AT91_NR_UART, diff --git a/drivers/serial/crisv10.c b/drivers/serial/crisv10.c index 5cacc5e74a9..b84137cdeb2 100644 --- a/drivers/serial/crisv10.c +++ b/drivers/serial/crisv10.c @@ -4878,7 +4878,7 @@ rs_init(void) driver->init_termios = tty_std_termios; driver->init_termios.c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL; /* is normally B9600 default... */ - driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS; + driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; driver->termios = serial_termios; driver->termios_locked = serial_termios_locked; diff --git a/drivers/serial/dz.c b/drivers/serial/dz.c index bf71bad5c34..466d06cc7d3 100644 --- a/drivers/serial/dz.c +++ b/drivers/serial/dz.c @@ -768,11 +768,7 @@ void __init dz_serial_console_init(void) static struct uart_driver dz_reg = { .owner = THIS_MODULE, .driver_name = "serial", -#ifdef CONFIG_DEVFS - .dev_name = "tts/%d", -#else .dev_name = "ttyS%d", -#endif .major = TTY_MAJOR, .minor = 64, .nr = DZ_NB_PORT, diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c index d202eb4f384..da85bafa094 100644 --- a/drivers/serial/imx.c +++ b/drivers/serial/imx.c @@ -888,7 +888,6 @@ static struct uart_driver imx_reg = { .owner = THIS_MODULE, .driver_name = DRIVER_NAME, .dev_name = "ttySMX", - .devfs_name = "ttsmx/", .major = SERIAL_IMX_MAJOR, .minor = MINOR_START, .nr = ARRAY_SIZE(imx_ports), diff --git a/drivers/serial/ip22zilog.c b/drivers/serial/ip22zilog.c index 651772474ac..56b093ecd77 100644 --- a/drivers/serial/ip22zilog.c +++ b/drivers/serial/ip22zilog.c @@ -1085,7 +1085,6 @@ static struct console ip22zilog_console = { static struct uart_driver ip22zilog_reg = { .owner = THIS_MODULE, .driver_name = "serial", - .devfs_name = "tts/", .dev_name = "ttyS", .major = TTY_MAJOR, .minor = 64, diff --git a/drivers/serial/m32r_sio.c b/drivers/serial/m32r_sio.c index 321a40f33b5..6a2a25d9b59 100644 --- a/drivers/serial/m32r_sio.c +++ b/drivers/serial/m32r_sio.c @@ -1131,7 +1131,6 @@ console_initcall(m32r_sio_console_init); static struct uart_driver m32r_sio_reg = { .owner = THIS_MODULE, .driver_name = "sio", - .devfs_name = "tts/", .dev_name = "ttyS", .major = TTY_MAJOR, .minor = 64, diff --git a/drivers/serial/mcfserial.c b/drivers/serial/mcfserial.c index 8ad24293436..29c0630e3e6 100644 --- a/drivers/serial/mcfserial.c +++ b/drivers/serial/mcfserial.c @@ -1713,7 +1713,6 @@ mcfrs_init(void) /* Initialize the tty_driver structure */ mcfrs_serial_driver->owner = THIS_MODULE; mcfrs_serial_driver->name = "ttyS"; - mcfrs_serial_driver->devfs_name = "ttys/"; mcfrs_serial_driver->driver_name = "serial"; mcfrs_serial_driver->major = TTY_MAJOR; mcfrs_serial_driver->minor_start = 64; diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c index 6459edc7f5c..1aa34844218 100644 --- a/drivers/serial/mpc52xx_uart.c +++ b/drivers/serial/mpc52xx_uart.c @@ -693,7 +693,6 @@ static struct uart_driver mpc52xx_uart_driver = { .owner = THIS_MODULE, .driver_name = "mpc52xx_psc_uart", .dev_name = "ttyPSC", - .devfs_name = "ttyPSC", .major = SERIAL_PSC_MAJOR, .minor = SERIAL_PSC_MINOR, .nr = MPC52xx_PSC_MAXNUM, diff --git a/drivers/serial/mpsc.c b/drivers/serial/mpsc.c index 94681922ea0..1cd102f84bf 100644 --- a/drivers/serial/mpsc.c +++ b/drivers/serial/mpsc.c @@ -315,7 +315,6 @@ struct mpsc_port_info *mpsc_device_remove(int index); #define MPSC_MAJOR 204 #define MPSC_MINOR_START 44 #define MPSC_DRIVER_NAME "MPSC" -#define MPSC_DEVFS_NAME "ttymm/" #define MPSC_DEV_NAME "ttyMM" #define MPSC_VERSION "1.00" @@ -1863,7 +1862,6 @@ static struct platform_driver mpsc_shared_driver = { static struct uart_driver mpsc_reg = { .owner = THIS_MODULE, .driver_name = MPSC_DRIVER_NAME, - .devfs_name = MPSC_DEVFS_NAME, .dev_name = MPSC_DEV_NAME, .major = MPSC_MAJOR, .minor = MPSC_MINOR_START, diff --git a/drivers/serial/pmac_zilog.c b/drivers/serial/pmac_zilog.c index 513ff859770..e3ba7e17a24 100644 --- a/drivers/serial/pmac_zilog.c +++ b/drivers/serial/pmac_zilog.c @@ -101,7 +101,6 @@ static DEFINE_MUTEX(pmz_irq_mutex); static struct uart_driver pmz_uart_reg = { .owner = THIS_MODULE, .driver_name = "ttyS", - .devfs_name = "tts/", .dev_name = "ttyS", .major = TTY_MAJOR, }; diff --git a/drivers/serial/pxa.c b/drivers/serial/pxa.c index ae364956854..0fa0ccc9ed2 100644 --- a/drivers/serial/pxa.c +++ b/drivers/serial/pxa.c @@ -780,7 +780,6 @@ static struct uart_pxa_port serial_pxa_ports[] = { static struct uart_driver serial_pxa_reg = { .owner = THIS_MODULE, .driver_name = "PXA serial", - .devfs_name = "tts/", .dev_name = "ttyS", .major = TTY_MAJOR, .minor = 64, diff --git a/drivers/serial/s3c2410.c b/drivers/serial/s3c2410.c index 837b6da520b..4c62ab949ec 100644 --- a/drivers/serial/s3c2410.c +++ b/drivers/serial/s3c2410.c @@ -149,7 +149,6 @@ s3c24xx_serial_dbg(const char *fmt, ...) /* UART name and device definitions */ #define S3C24XX_SERIAL_NAME "ttySAC" -#define S3C24XX_SERIAL_DEVFS "tts/" #define S3C24XX_SERIAL_MAJOR 204 #define S3C24XX_SERIAL_MINOR 64 @@ -952,7 +951,6 @@ static struct uart_driver s3c24xx_uart_drv = { .nr = 3, .cons = S3C24XX_SERIAL_CONSOLE, .driver_name = S3C24XX_SERIAL_NAME, - .devfs_name = S3C24XX_SERIAL_DEVFS, .major = S3C24XX_SERIAL_MAJOR, .minor = S3C24XX_SERIAL_MINOR, }; diff --git a/drivers/serial/sa1100.c b/drivers/serial/sa1100.c index c2d9068b491..8bbd8567669 100644 --- a/drivers/serial/sa1100.c +++ b/drivers/serial/sa1100.c @@ -816,7 +816,6 @@ static struct uart_driver sa1100_reg = { .owner = THIS_MODULE, .driver_name = "ttySA", .dev_name = "ttySA", - .devfs_name = "ttySA", .major = SERIAL_SA1100_MAJOR, .minor = MINOR_START, .nr = NR_PORTS, diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c index 17839e753e4..7dc1e67b685 100644 --- a/drivers/serial/serial_core.c +++ b/drivers/serial/serial_core.c @@ -2153,7 +2153,6 @@ int uart_register_driver(struct uart_driver *drv) normal->owner = drv->owner; normal->driver_name = drv->driver_name; - normal->devfs_name = drv->devfs_name; normal->name = drv->dev_name; normal->major = drv->major; normal->minor_start = drv->minor; @@ -2161,7 +2160,7 @@ int uart_register_driver(struct uart_driver *drv) normal->subtype = SERIAL_TYPE_NORMAL; normal->init_termios = tty_std_termios; normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; - normal->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS; + normal->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; normal->driver_state = drv; tty_set_operations(normal, &uart_ops); @@ -2312,7 +2311,7 @@ int uart_remove_one_port(struct uart_driver *drv, struct uart_port *port) mutex_unlock(&state->mutex); /* - * Remove the devices from devfs + * Remove the devices from the tty layer */ tty_unregister_device(drv->tty_driver, port->line); diff --git a/drivers/serial/serial_txx9.c b/drivers/serial/serial_txx9.c index 3bdee64d1a9..a901a7e446f 100644 --- a/drivers/serial/serial_txx9.c +++ b/drivers/serial/serial_txx9.c @@ -69,12 +69,10 @@ static char *serial_name = "TX39/49 Serial driver"; #if !defined(CONFIG_SERIAL_TXX9_STDSERIAL) /* "ttyS" is used for standard serial driver */ #define TXX9_TTY_NAME "ttyTX" -#define TXX9_TTY_DEVFS_NAME "tttx/" #define TXX9_TTY_MINOR_START (64 + 64) /* ttyTX0(128), ttyTX1(129) */ #else /* acts like standard serial driver */ #define TXX9_TTY_NAME "ttyS" -#define TXX9_TTY_DEVFS_NAME "tts/" #define TXX9_TTY_MINOR_START 64 #endif #define TXX9_TTY_MAJOR TTY_MAJOR @@ -971,7 +969,6 @@ console_initcall(serial_txx9_console_init); static struct uart_driver serial_txx9_reg = { .owner = THIS_MODULE, .driver_name = "serial_txx9", - .devfs_name = TXX9_TTY_DEVFS_NAME, .dev_name = TXX9_TTY_NAME, .major = TXX9_TTY_MAJOR, .minor = TXX9_TTY_MINOR_START, diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c index 44f6bf79bbe..d97f3ca6cc2 100644 --- a/drivers/serial/sh-sci.c +++ b/drivers/serial/sh-sci.c @@ -1699,9 +1699,6 @@ static char banner[] __initdata = static struct uart_driver sci_uart_driver = { .owner = THIS_MODULE, .driver_name = "sci", -#ifdef CONFIG_DEVFS_FS - .devfs_name = "ttsc/", -#endif .dev_name = "ttySC", .major = SCI_MAJOR, .minor = SCI_MINOR_START, diff --git a/drivers/serial/sunhv.c b/drivers/serial/sunhv.c index ba22e256c6f..d36bc400339 100644 --- a/drivers/serial/sunhv.c +++ b/drivers/serial/sunhv.c @@ -353,7 +353,6 @@ static struct uart_ops sunhv_pops = { static struct uart_driver sunhv_reg = { .owner = THIS_MODULE, .driver_name = "serial", - .devfs_name = "tts/", .dev_name = "ttyS", .major = TTY_MAJOR, }; diff --git a/drivers/serial/sunsab.c b/drivers/serial/sunsab.c index e4c0fd2d6a9..7da02d11c36 100644 --- a/drivers/serial/sunsab.c +++ b/drivers/serial/sunsab.c @@ -851,7 +851,6 @@ static struct uart_ops sunsab_pops = { static struct uart_driver sunsab_reg = { .owner = THIS_MODULE, .driver_name = "serial", - .devfs_name = "tts/", .dev_name = "ttyS", .major = TTY_MAJOR, }; diff --git a/drivers/serial/sunsu.c b/drivers/serial/sunsu.c index 0268b307c01..6e28c25138c 100644 --- a/drivers/serial/sunsu.c +++ b/drivers/serial/sunsu.c @@ -1265,7 +1265,6 @@ out: static struct uart_driver sunsu_reg = { .owner = THIS_MODULE, .driver_name = "serial", - .devfs_name = "tts/", .dev_name = "ttyS", .major = TTY_MAJOR, }; diff --git a/drivers/serial/sunzilog.c b/drivers/serial/sunzilog.c index 76c9bac9271..9f42677287a 100644 --- a/drivers/serial/sunzilog.c +++ b/drivers/serial/sunzilog.c @@ -1017,7 +1017,6 @@ static int zilog_irq = -1; static struct uart_driver sunzilog_reg = { .owner = THIS_MODULE, .driver_name = "ttyS", - .devfs_name = "tts/", .dev_name = "ttyS", .major = TTY_MAJOR, }; diff --git a/drivers/serial/v850e_uart.c b/drivers/serial/v850e_uart.c index df705fda424..a0da2aaf71c 100644 --- a/drivers/serial/v850e_uart.c +++ b/drivers/serial/v850e_uart.c @@ -468,7 +468,6 @@ static struct uart_ops v850e_uart_ops = { static struct uart_driver v850e_uart_driver = { .owner = THIS_MODULE, .driver_name = "v850e_uart", - .devfs_name = "tts/", .dev_name = "ttyS", .major = TTY_MAJOR, .minor = V850E_UART_MINOR_BASE, diff --git a/drivers/serial/vr41xx_siu.c b/drivers/serial/vr41xx_siu.c index df5e8713fa3..017571ffa19 100644 --- a/drivers/serial/vr41xx_siu.c +++ b/drivers/serial/vr41xx_siu.c @@ -911,7 +911,6 @@ static struct uart_driver siu_uart_driver = { .owner = THIS_MODULE, .driver_name = "SIU", .dev_name = "ttyVR", - .devfs_name = "ttvr/", .major = SIU_MAJOR, .minor = SIU_MINOR_BASE, .cons = SERIAL_VR41XX_CONSOLE, diff --git a/drivers/tc/zs.c b/drivers/tc/zs.c index 2dffa8e303b..7f27b356eaf 100644 --- a/drivers/tc/zs.c +++ b/drivers/tc/zs.c @@ -1745,7 +1745,6 @@ int __init zs_init(void) /* Not all of this is exactly right for us. */ serial_driver->owner = THIS_MODULE; - serial_driver->devfs_name = "tts/"; serial_driver->name = "ttyS"; serial_driver->major = TTY_MAJOR; serial_driver->minor_start = 64; @@ -1754,7 +1753,7 @@ int __init zs_init(void) serial_driver->init_termios = tty_std_termios; serial_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; - serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS; + serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; tty_set_operations(serial_driver, &serial_ops); if (tty_register_driver(serial_driver)) diff --git a/drivers/telephony/phonedev.c b/drivers/telephony/phonedev.c index e166fffea86..e41f49afd0f 100644 --- a/drivers/telephony/phonedev.c +++ b/drivers/telephony/phonedev.c @@ -28,7 +28,6 @@ #include <linux/kmod.h> #include <linux/sem.h> -#include <linux/devfs_fs_kernel.h> #include <linux/mutex.h> #define PHONE_NUM_DEVICES 256 @@ -106,8 +105,6 @@ int phone_register_device(struct phone_device *p, int unit) if (phone_device[i] == NULL) { phone_device[i] = p; p->minor = i; - devfs_mk_cdev(MKDEV(PHONE_MAJOR,i), - S_IFCHR|S_IRUSR|S_IWUSR, "phone/%d", i); mutex_unlock(&phone_lock); return 0; } @@ -125,7 +122,6 @@ void phone_unregister_device(struct phone_device *pfd) mutex_lock(&phone_lock); if (phone_device[pfd->minor] != pfd) panic("phone: bad unregister"); - devfs_remove("phone/%d", pfd->minor); phone_device[pfd->minor] = NULL; mutex_unlock(&phone_lock); } diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index d41dc67ba4c..3670d77e912 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -1145,12 +1145,11 @@ static int __init acm_init(void) acm_tty_driver->owner = THIS_MODULE, acm_tty_driver->driver_name = "acm", acm_tty_driver->name = "ttyACM", - acm_tty_driver->devfs_name = "usb/acm/", acm_tty_driver->major = ACM_TTY_MAJOR, acm_tty_driver->minor_start = 0, acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL, acm_tty_driver->subtype = SERIAL_TYPE_NORMAL, - acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS, + acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; acm_tty_driver->init_termios = tty_std_termios; acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; tty_set_operations(acm_tty_driver, &acm_ops); diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c index 9d6e1d29552..416acac879d 100644 --- a/drivers/usb/gadget/serial.c +++ b/drivers/usb/gadget/serial.c @@ -588,12 +588,11 @@ static int __init gs_module_init(void) gs_tty_driver->owner = THIS_MODULE; gs_tty_driver->driver_name = GS_SHORT_NAME; gs_tty_driver->name = "ttygs"; - gs_tty_driver->devfs_name = "usb/ttygs/"; gs_tty_driver->major = GS_MAJOR; gs_tty_driver->minor_start = GS_MINOR_START; gs_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; gs_tty_driver->subtype = SERIAL_TYPE_NORMAL; - gs_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS; + gs_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; gs_tty_driver->init_termios = tty_std_termios; gs_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; tty_set_operations(gs_tty_driver, &gs_tty_ops); diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index a30135c7cfe..f466f89eeb6 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -1059,13 +1059,12 @@ static int __init usb_serial_init(void) usb_serial_tty_driver->owner = THIS_MODULE; usb_serial_tty_driver->driver_name = "usbserial"; - usb_serial_tty_driver->devfs_name = "usb/tts/"; usb_serial_tty_driver->name = "ttyUSB"; usb_serial_tty_driver->major = SERIAL_TTY_MAJOR; usb_serial_tty_driver->minor_start = 0; usb_serial_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; usb_serial_tty_driver->subtype = SERIAL_TYPE_NORMAL; - usb_serial_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS; + usb_serial_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; usb_serial_tty_driver->init_termios = tty_std_termios; usb_serial_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; tty_set_operations(usb_serial_tty_driver, &serial_ops); diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c index 31143afe7c9..a171daab0ad 100644 --- a/drivers/video/fbmem.c +++ b/drivers/video/fbmem.c @@ -32,7 +32,6 @@ #ifdef CONFIG_KMOD #include <linux/kmod.h> #endif -#include <linux/devfs_fs_kernel.h> #include <linux/err.h> #include <linux/device.h> #include <linux/efi.h> @@ -1331,8 +1330,6 @@ register_framebuffer(struct fb_info *fb_info) fb_add_videomode(&mode, &fb_info->modelist); registered_fb[i] = fb_info; - devfs_mk_cdev(MKDEV(FB_MAJOR, i), - S_IFCHR | S_IRUGO | S_IWUGO, "fb/%d", i); event.info = fb_info; blocking_notifier_call_chain(&fb_notifier_list, FB_EVENT_FB_REGISTERED, &event); @@ -1359,7 +1356,6 @@ unregister_framebuffer(struct fb_info *fb_info) i = fb_info->node; if (!registered_fb[i]) return -EINVAL; - devfs_remove("fb/%d", i); if (fb_info->pixmap.addr && (fb_info->pixmap.flags & FB_PIXMAP_DEFAULT)) @@ -1432,7 +1428,6 @@ fbmem_init(void) { create_proc_read_entry("fb", 0, NULL, fbmem_read_proc, NULL); - devfs_mk_dir("fb"); if (register_chrdev(FB_MAJOR,"fb",&fb_fops)) printk("unable to get major %d for fb devs\n", FB_MAJOR); diff --git a/fs/Makefile b/fs/Makefile index d0ea6bfccf2..89135428a53 100644 --- a/fs/Makefile +++ b/fs/Makefile @@ -66,7 +66,6 @@ obj-$(CONFIG_MSDOS_FS) += msdos/ obj-$(CONFIG_VFAT_FS) += vfat/ obj-$(CONFIG_BFS_FS) += bfs/ obj-$(CONFIG_ISO9660_FS) += isofs/ -obj-$(CONFIG_DEVFS_FS) += devfs/ obj-$(CONFIG_HFSPLUS_FS) += hfsplus/ # Before hfs to find wrapped HFS+ obj-$(CONFIG_HFS_FS) += hfs/ obj-$(CONFIG_VXFS_FS) += freevxfs/ diff --git a/fs/block_dev.c b/fs/block_dev.c index 7f7600e2381..909cb0595b4 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -12,7 +12,6 @@ #include <linux/slab.h> #include <linux/kmod.h> #include <linux/major.h> -#include <linux/devfs_fs_kernel.h> #include <linux/smp_lock.h> #include <linux/highmem.h> #include <linux/blkdev.h> diff --git a/fs/char_dev.c b/fs/char_dev.c index f3418f7a6e9..97986635b64 100644 --- a/fs/char_dev.c +++ b/fs/char_dev.c @@ -14,7 +14,6 @@ #include <linux/errno.h> #include <linux/module.h> #include <linux/smp_lock.h> -#include <linux/devfs_fs_kernel.h> #include <linux/seq_file.h> #include <linux/kobject.h> diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c index 7caee8d8ea3..803aacf0d49 100644 --- a/fs/coda/psdev.c +++ b/fs/coda/psdev.c @@ -28,7 +28,6 @@ #include <linux/delay.h> #include <linux/skbuff.h> #include <linux/proc_fs.h> -#include <linux/devfs_fs_kernel.h> #include <linux/vmalloc.h> #include <linux/fs.h> #include <linux/file.h> @@ -365,22 +364,12 @@ static int init_coda_psdev(void) err = PTR_ERR(coda_psdev_class); goto out_chrdev; } - devfs_mk_dir ("coda"); - for (i = 0; i < MAX_CODADEVS; i++) { + for (i = 0; i < MAX_CODADEVS; i++) class_device_create(coda_psdev_class, NULL, MKDEV(CODA_PSDEV_MAJOR,i), NULL, "cfs%d", i); - err = devfs_mk_cdev(MKDEV(CODA_PSDEV_MAJOR, i), - S_IFCHR|S_IRUSR|S_IWUSR, "coda/%d", i); - if (err) - goto out_class; - } coda_sysctl_init(); goto out; -out_class: - for (i = 0; i < MAX_CODADEVS; i++) - class_device_destroy(coda_psdev_class, MKDEV(CODA_PSDEV_MAJOR, i)); - class_destroy(coda_psdev_class); out_chrdev: unregister_chrdev(CODA_PSDEV_MAJOR, "coda"); out: @@ -419,12 +408,9 @@ static int __init init_coda(void) } return 0; out: - for (i = 0; i < MAX_CODADEVS; i++) { + for (i = 0; i < MAX_CODADEVS; i++) class_device_destroy(coda_psdev_class, MKDEV(CODA_PSDEV_MAJOR, i)); - devfs_remove("coda/%d", i); - } class_destroy(coda_psdev_class); - devfs_remove("coda"); unregister_chrdev(CODA_PSDEV_MAJOR, "coda"); coda_sysctl_clean(); out1: @@ -441,12 +427,9 @@ static void __exit exit_coda(void) if ( err != 0 ) { printk("coda: failed to unregister filesystem\n"); } - for (i = 0; i < MAX_CODADEVS; i++) { + for (i = 0; i < MAX_CODADEVS; i++) class_device_destroy(coda_psdev_class, MKDEV(CODA_PSDEV_MAJOR, i)); - devfs_remove("coda/%d", i); - } class_destroy(coda_psdev_class); - devfs_remove("coda"); unregister_chrdev(CODA_PSDEV_MAJOR, "coda"); coda_sysctl_clean(); coda_destroy_inodecache(); diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index d8ecfedef18..d8d50a70c58 100644 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@ -44,7 +44,6 @@ #include <linux/loop.h> #include <linux/auto_fs.h> #include <linux/auto_fs4.h> -#include <linux/devfs_fs.h> #include <linux/tty.h> #include <linux/vt_kern.h> #include <linux/fb.h> diff --git a/fs/devfs/Makefile b/fs/devfs/Makefile deleted file mode 100644 index 6dd8d1245e2..00000000000 --- a/fs/devfs/Makefile +++ /dev/null @@ -1,8 +0,0 @@ -# -# Makefile for the linux devfs-filesystem routines. -# - -obj-$(CONFIG_DEVFS_FS) += devfs.o - -devfs-objs := base.o util.o - diff --git a/fs/devfs/base.c b/fs/devfs/base.c deleted file mode 100644 index 51a97f13274..00000000000 --- a/fs/devfs/base.c +++ /dev/null @@ -1,2836 +0,0 @@ -/* devfs (Device FileSystem) driver. - - Copyright (C) 1998-2002 Richard Gooch - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public - License as published by the Free Software Foundation; either - version 2 of the License, or (at your option) any later version. - - This library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with this library; if not, write to the Free - Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - - Richard Gooch may be reached by email at rgooch@atnf.csiro.au - The postal address is: - Richard Gooch, c/o ATNF, P. O. Box 76, Epping, N.S.W., 2121, Australia. - - ChangeLog - - 19980110 Richard Gooch <rgooch@atnf.csiro.au> - Original version. - v0.1 - 19980111 Richard Gooch <rgooch@atnf.csiro.au> - Created per-fs inode table rather than using inode->u.generic_ip - v0.2 - 19980111 Richard Gooch <rgooch@atnf.csiro.au> - Created .epoch inode which has a ctime of 0. - Fixed loss of named pipes when dentries lost. - Fixed loss of inode data when devfs_register() follows mknod(). - v0.3 - 19980111 Richard Gooch <rgooch@atnf.csiro.au> - Fix for when compiling with CONFIG_KERNELD. - 19980112 Richard Gooch <rgooch@atnf.csiro.au> - Fix for readdir() which sometimes didn't show entries. - Added <<tolerant>> option to <devfs_register>. - v0.4 - 19980113 Richard Gooch <rgooch@atnf.csiro.au> - Created <devfs_fill_file> function. - v0.5 - 19980115 Richard Gooch <rgooch@atnf.csiro.au> - Added subdirectory support. Major restructuring. - 19980116 Richard Gooch <rgooch@atnf.csiro.au> - Fixed <find_by_dev> to not search major=0,minor=0. - Added symlink support. - v0.6 - 19980120 Richard Gooch <rgooch@atnf.csiro.au> - Created <devfs_mk_dir> function and support directory unregister - 19980120 Richard Gooch <rgooch@atnf.csiro.au> - Auto-ownership uses real uid/gid rather than effective uid/gid. - v0.7 - 19980121 Richard Gooch <rgooch@atnf.csiro.au> - Supported creation of sockets. - v0.8 - 19980122 Richard Gooch <rgooch@atnf.csiro.au> - Added DEVFS_FL_HIDE_UNREG flag. - Interface change to <devfs_mk_symlink>. - Created <devfs_symlink> to support symlink(2). - v0.9 - 19980123 Richard Gooch <rgooch@atnf.csiro.au> - Added check to <devfs_fill_file> to check inode is in devfs. - Added optional traversal of symlinks. - v0.10 - 19980124 Richard Gooch <rgooch@atnf.csiro.au> - Created <devfs_get_flags> and <devfs_set_flags>. - v0.11 - 19980125 C. Scott Ananian <cananian@alumni.princeton.edu> - Created <devfs_find_handle>. - 19980125 Richard Gooch <rgooch@atnf.csiro.au> - Allow removal of symlinks. - v0.12 - 19980125 Richard Gooch <rgooch@atnf.csiro.au> - Created <devfs_set_symlink_destination>. - 19980126 Richard Gooch <rgooch@atnf.csiro.au> - Moved DEVFS_SUPER_MAGIC into header file. - Added DEVFS_FL_HIDE flag. - Created <devfs_get_maj_min>. - Created <devfs_get_handle_from_inode>. - Fixed minor bug in <find_by_dev>. - 19980127 Richard Gooch <rgooch@atnf.csiro.au> - Changed interface to <find_by_dev>, <find_entry>, - <devfs_unregister>, <devfs_fill_file> and <devfs_find_handle>. - Fixed inode times when symlink created with symlink(2). - v0.13 - 19980129 C. Scott Ananian <cananian@alumni.princeton.edu> - Exported <devfs_set_symlink_destination>, <devfs_get_maj_min> - and <devfs_get_handle_from_inode>. - 19980129 Richard Gooch <rgooch@atnf.csiro.au> - Created <devfs_unlink> to support unlink(2). - v0.14 - 19980129 Richard Gooch <rgooch@atnf.csiro.au> - Fixed kerneld support for entries in devfs subdirectories. - 19980130 Richard Gooch <rgooch@atnf.csiro.au> - Bugfixes in <call_kerneld>. - v0.15 - 19980207 Richard Gooch <rgooch@atnf.csiro.au> - Call kerneld when looking up unregistered entries. - v0.16 - 19980326 Richard Gooch <rgooch@atnf.csiro.au> - Modified interface to <devfs_find_handle> for symlink traversal. - v0.17 - 19980331 Richard Gooch <rgooch@atnf.csiro.au> - Fixed persistence bug with device numbers for manually created - device files. - Fixed problem with recreating symlinks with different content. - v0.18 - 19980401 Richard Gooch <rgooch@atnf.csiro.au> - Changed to CONFIG_KMOD. - Hide entries which are manually unlinked. - Always invalidate devfs dentry cache when registering entries. - Created <devfs_rmdir> to support rmdir(2). - Ensure directories created by <devfs_mk_dir> are visible. - v0.19 - 19980402 Richard Gooch <rgooch@atnf.csiro.au> - Invalidate devfs dentry cache when making directories. - Invalidate devfs dentry cache when removing entries. - Fixed persistence bug with fifos. - v0.20 - 19980421 Richard Gooch <rgooch@atnf.csiro.au> - Print process command when debugging kerneld/kmod. - Added debugging for register/unregister/change operations. - 19980422 Richard Gooch <rgooch@atnf.csiro.au> - Added "devfs=" boot options. - v0.21 - 19980426 Richard Gooch <rgooch@atnf.csiro.au> - No longer lock/unlock superblock in <devfs_put_super>. - Drop negative dentries when they are released. - Manage dcache more efficiently. - v0.22 - 19980427 Richard Gooch <rgooch@atnf.csiro.au> - Added DEVFS_FL_AUTO_DEVNUM flag. - v0.23 - 19980430 Richard Gooch <rgooch@atnf.csiro.au> - No longer set unnecessary methods. - v0.24 - 19980504 Richard Gooch <rgooch@atnf.csiro.au> - Added PID display to <call_kerneld> debugging message. - Added "after" debugging message to <call_kerneld>. - 19980519 Richard Gooch <rgooch@atnf.csiro.au> - Added "diread" and "diwrite" boot options. - 19980520 Richard Gooch <rgooch@atnf.csiro.au> - Fixed persistence problem with permissions. - v0.25 - 19980602 Richard Gooch <rgooch@atnf.csiro.au> - Support legacy device nodes. - Fixed bug where recreated inodes were hidden. - v0.26 - 19980602 Richard Gooch <rgooch@atnf.csiro.au> - Improved debugging in <get_vfs_inode>. - 19980607 Richard Gooch <rgooch@atnf.csiro.au> - No longer free old dentries in <devfs_mk_dir>. - Free all dentries for a given entry when deleting inodes. - v0.27 - 19980627 Richard Gooch <rgooch@atnf.csiro.au> - Limit auto-device numbering to majors 128 to 239. - v0.28 - 19980629 Richard Gooch <rgooch@atnf.csiro.au> - Fixed inode times persistence problem. - v0.29 - 19980704 Richard Gooch <rgooch@atnf.csiro.au> - Fixed spelling in <devfs_readlink> debug. - Fixed bug in <devfs_setup> parsing "dilookup". - v0.30 - 19980705 Richard Gooch <rgooch@atnf.csiro.au> - Fixed devfs inode leak when manually recreating inodes. - Fixed permission persistence problem when recreating inodes. - v0.31 - 19980727 Richard Gooch <rgooch@atnf.csiro.au> - Removed harmless "unused variable" compiler warning. - Fixed modes for manually recreated device nodes. - v0.32 - 19980728 Richard Gooch <rgooch@atnf.csiro.au> - Added NULL devfs inode warning in <devfs_read_inode>. - Force all inode nlink values to 1. - v0.33 - 19980730 Richard Gooch <rgooch@atnf.csiro.au> - Added "dimknod" boot option. - Set inode nlink to 0 when freeing dentries. - Fixed modes for manually recreated symlinks. - v0.34 - 19980802 Richard Gooch <rgooch@atnf.csiro.au> - Fixed bugs in recreated directories and symlinks. - v0.35 - 19980806 Richard Gooch <rgooch@atnf.csiro.au> - Fixed bugs in recreated device nodes. - 19980807 Richard Gooch <rgooch@atnf.csiro.au> - Fixed bug in currently unused <devfs_get_handle_from_inode>. - Defined new <devfs_handle_t> type. - Improved debugging when getting entries. - Fixed bug where directories could be emptied. - v0.36 - 19980809 Richard Gooch <rgooch@atnf.csiro.au> - Replaced dummy .epoch inode with .devfsd character device. - 19980810 Richard Gooch <rgooch@atnf.csiro.au> - Implemented devfsd protocol revision 0. - v0.37 - 19980819 Richard Gooch <rgooch@atnf.csiro.au> - Added soothing message to warning in <devfs_d_iput>. - v0.38 - 19980829 Richard Gooch <rgooch@atnf.csiro.au> - Use GCC extensions for structure initialisations. - Implemented async open notification. - Incremented devfsd protocol revision to 1. - v0.39 - 19980908 Richard Gooch <rgooch@atnf.csiro.au> - Moved async open notification to end of <devfs_open>. - v0.40 - 19980910 Richard Gooch <rgooch@atnf.csiro.au> - Prepended "/dev/" to module load request. - Renamed <call_kerneld> to <call_kmod>. - v0.41 - 19980910 Richard Gooch <rgooch@atnf.csiro.au> - Fixed typo "AYSNC" -> "ASYNC". - v0.42 - 19980910 Richard Gooch <rgooch@atnf.csiro.au> - Added open flag for files. - v0.43 - 19980927 Richard Gooch <rgooch@atnf.csiro.au> - Set i_blocks=0 and i_blksize=1024 in <devfs_read_inode>. - v0.44 - 19981005 Richard Gooch <rgooch@atnf.csiro.au> - Added test for empty <<name>> in <devfs_find_handle>. - Renamed <generate_path> to <devfs_generate_path> and published. - v0.45 - 19981006 Richard Gooch <rgooch@atnf.csiro.au> - Created <devfs_get_fops>. - v0.46 - 19981007 Richard Gooch <rgooch@atnf.csiro.au> - Limit auto-device numbering to majors 144 to 239. - v0.47 - 19981010 Richard Gooch <rgooch@atnf.csiro.au> - Updated <devfs_follow_link> for VFS change in 2.1.125. - v0.48 - 19981022 Richard Gooch <rgooch@atnf.csiro.au> - Created DEVFS_ FL_COMPAT flag. - v0.49 - 19981023 Richard Gooch <rgooch@atnf.csiro.au> - Created "nocompat" boot option. - v0.50 - 19981025 Richard Gooch <rgooch@atnf.csiro.au> - Replaced "mount" boot option with "nomount". - v0.51 - 19981110 Richard Gooch <rgooch@atnf.csiro.au> - Created "only" boot option. - v0.52 - 19981112 Richard Gooch <rgooch@atnf.csiro.au> - Added DEVFS_FL_REMOVABLE flag. - v0.53 - 19981114 Richard Gooch <rgooch@atnf.csiro.au> - Only call <scan_dir_for_removable> on first call to - <devfs_readdir>. - v0.54 - 19981205 Richard Gooch <rgooch@atnf.csiro.au> - Updated <devfs_rmdir> for VFS change in 2.1.131. - v0.55 - 19981218 Richard Gooch <rgooch@atnf.csiro.au> - Created <devfs_mk_compat>. - 19981220 Richard Gooch <rgooch@atnf.csiro.au> - Check for partitions on removable media in <devfs_lookup>. - v0.56 - 19990118 Richard Gooch <rgooch@atnf.csiro.au> - Added support for registering regular files. - Created <devfs_set_file_size>. - Update devfs inodes from entries if not changed through FS. - v0.57 - 19990124 Richard Gooch <rgooch@atnf.csiro.au> - Fixed <devfs_fill_file> to only initialise temporary inodes. - Trap for NULL fops in <devfs_register>. - Return -ENODEV in <devfs_fill_file> for non-driver inodes. - v0.58 - 19990126 Richard Gooch <rgooch@atnf.csiro.au> - Switched from PATH_MAX to DEVFS_PATHLEN. - v0.59 - 19990127 Richard Gooch <rgooch@atnf.csiro.au> - Created "nottycompat" boot option. - v0.60 - 19990318 Richard Gooch <rgooch@atnf.csiro.au> - Fixed <devfsd_read> to not overrun event buffer. - v0.61 - 19990329 Richard Gooch <rgooch@atnf.csiro.au> - Created <devfs_auto_unregister>. - v0.62 - 19990330 Richard Gooch <rgooch@atnf.csiro.au> - Don't return unregistred entries in <devfs_find_handle>. - Panic in <devfs_unregister> if entry unregistered. - 19990401 Richard Gooch <rgooch@atnf.csiro.au> - Don't panic in <devfs_auto_unregister> for duplicates. - v0.63 - 19990402 Richard Gooch <rgooch@atnf.csiro.au> - Don't unregister already unregistered entries in <unregister>. - v0.64 - 19990510 Richard Gooch <rgooch@atnf.csiro.au> - Disable warning messages when unable to read partition table for - removable media. - v0.65 - 19990512 Richard Gooch <rgooch@atnf.csiro.au> - Updated <devfs_lookup> for VFS change in 2.3.1-pre1. - Created "oops-on-panic" boot option. - Improved debugging in <devfs_register> and <devfs_unregister>. - v0.66 - 19990519 Richard Gooch <rgooch@atnf.csiro.au> - Added documentation for some functions. - 19990525 Richard Gooch <rgooch@atnf.csiro.au> - Removed "oops-on-panic" boot option: now always Oops. - v0.67 - 19990531 Richard Gooch <rgooch@atnf.csiro.au> - Improved debugging in <devfs_register>. - v0.68 - 19990604 Richard Gooch <rgooch@atnf.csiro.au> - Added "diunlink" and "nokmod" boot options. - Removed superfluous warning message in <devfs_d_iput>. - v0.69 - 19990611 Richard Gooch <rgooch@atnf.csiro.au> - Took account of change to <d_alloc_root>. - v0.70 - 19990614 Richard Gooch <rgooch@atnf.csiro.au> - Created separate event queue for each mounted devfs. - Removed <devfs_invalidate_dcache>. - Created new ioctl()s. - Incremented devfsd protocol revision to 3. - Fixed bug when re-creating directories: contents were lost. - Block access to inodes until devfsd updates permissions. - 19990615 Richard Gooch <rgooch@atnf.csiro.au> - Support 2.2.x kernels. - v0.71 - 19990623 Richard Gooch <rgooch@atnf.csiro.au> - Switched to sending process uid/gid to devfsd. - Renamed <call_kmod> to <try_modload>. - Added DEVFSD_NOTIFY_LOOKUP event. - 19990624 Richard Gooch <rgooch@atnf.csiro.au> - Added DEVFSD_NOTIFY_CHANGE event. - Incremented devfsd protocol revision to 4. - v0.72 - 19990713 Richard Gooch <rgooch@atnf.csiro.au> - Return EISDIR rather than EINVAL for read(2) on directories. - v0.73 - 19990809 Richard Gooch <rgooch@atnf.csiro.au> - Changed <devfs_setup> to new __init scheme. - v0.74 - 19990901 Richard Gooch <rgooch@atnf.csiro.au> - Changed remaining function declarations to new __init scheme. - v0.75 - 19991013 Richard Gooch <rgooch@atnf.csiro.au> - Created <devfs_get_info>, <devfs_set_info>, - <devfs_get_first_child> and <devfs_get_next_sibling>. - Added <<dir>> parameter to <devfs_register>, <devfs_mk_compat>, - <devfs_mk_dir> and <devfs_find_handle>. - Work sponsored by SGI. - v0.76 - 19991017 Richard Gooch <rgooch@atnf.csiro.au> - Allow multiple unregistrations. - Work sponsored by SGI. - v0.77 - 19991026 Richard Gooch <rgooch@atnf.csiro.au> - Added major and minor number to devfsd protocol. - Incremented devfsd protocol revision to 5. - Work sponsored by SGI. - v0.78 - 19991030 Richard Gooch <rgooch@atnf.csiro.au> - Support info pointer for all devfs entry types. - Added <<info>> parameter to <devfs_mk_dir> and - <devfs_mk_symlink>. - Work sponsored by SGI. - v0.79 - 19991031 Richard Gooch <rgooch@atnf.csiro.au> - Support "../" when searching devfs namespace. - Work sponsored by SGI. - v0.80 - 19991101 Richard Gooch <rgooch@atnf.csiro.au> - Created <devfs_get_unregister_slave>. - Work sponsored by SGI. - v0.81 - 19991103 Richard Gooch <rgooch@atnf.csiro.au> - Exported <devfs_get_parent>. - Work sponsored by SGI. - v0.82 - 19991104 Richard Gooch <rgooch@atnf.csiro.au> - Removed unused <devfs_set_symlink_destination>. - 19991105 Richard Gooch <rgooch@atnf.csiro.au> - Do not hide entries from devfsd or children. - Removed DEVFS_ FL_TTY_COMPAT flag. - Removed "nottycompat" boot option. - Removed <devfs_mk_compat>. - Work sponsored by SGI. - v0.83 - 19991107 Richard Gooch <rgooch@atnf.csiro.au> - Added DEVFS_FL_WAIT flag. - Work sponsored by SGI. - v0.84 - 19991107 Richard Gooch <rgooch@atnf.csiro.au> - Support new "disc" naming scheme in <get_removable_partition>. - Allow NULL fops in <devfs_register>. - Work sponsored by SGI. - v0.85 - 19991110 Richard Gooch <rgooch@atnf.csiro.au> - Fall back to major table if NULL fops given to <devfs_register>. - Work sponsored by SGI. - v0.86 - 19991204 Richard Gooch <rgooch@atnf.csiro.au> - Support fifos when unregistering. - Work sponsored by SGI. - v0.87 - 19991209 Richard Gooch <rgooch@atnf.csiro.au> - Removed obsolete DEVFS_ FL_COMPAT and DEVFS_ FL_TOLERANT flags. - Work sponsored by SGI. - v0.88 - 19991214 Richard Gooch <rgooch@atnf.csiro.au> - Removed kmod support. - Work sponsored by SGI. - v0.89 - 19991216 Richard Gooch <rgooch@atnf.csiro.au> - Improved debugging in <get_vfs_inode>. - Ensure dentries created by devfsd will be cleaned up. - Work sponsored by SGI. - v0.90 - 19991223 Richard Gooch <rgooch@atnf.csiro.au> - Created <devfs_get_name>. - Work sponsored by SGI. - v0.91 - 20000203 Richard Gooch <rgooch@atnf.csiro.au> - Ported to kernel 2.3.42. - Removed <devfs_fill_file>. - Work sponsored by SGI. - v0.92 - 20000306 Richard Gooch <rgooch@atnf.csiro.au> - Added DEVFS_ FL_NO_PERSISTENCE flag. - Removed unnecessary call to <update_devfs_inode_from_entry> in - <devfs_readdir>. - Work sponsored by SGI. - v0.93 - 20000413 Richard Gooch <rgooch@atnf.csiro.au> - Set inode->i_size to correct size for symlinks. - 20000414 Richard Gooch <rgooch@atnf.csiro.au> - Only give lookup() method to directories to comply with new VFS - assumptions. - Work sponsored by SGI. - 20000415 Richard Gooch <rgooch@atnf.csiro.au> - Remove unnecessary tests in symlink methods. - Don't kill existing block ops in <devfs_read_inode>. - Work sponsored by SGI. - v0.94 - 20000424 Richard Gooch <rgooch@atnf.csiro.au> - Don't create missing directories in <devfs_find_handle>. - Work sponsored by SGI. - v0.95 - 20000430 Richard Gooch <rgooch@atnf.csiro.au> - Added CONFIG_DEVFS_MOUNT. - Work sponsored by SGI. - v0.96 - 20000608 Richard Gooch <rgooch@atnf.csiro.au> - Disabled multi-mount capability (use VFS bindings instead). - Work sponsored by SGI. - v0.97 - 20000610 Richard Gooch <rgooch@atnf.csiro.au> - Switched to FS_SINGLE to disable multi-mounts. - 20000612 Richard Gooch <rgooch@atnf.csiro.au> - Removed module support. - Removed multi-mount code. - Removed compatibility macros: VFS has changed too much. - Work sponsored by SGI. - v0.98 - 20000614 Richard Gooch <rgooch@atnf.csiro.au> - Merged devfs inode into devfs entry. - Work sponsored by SGI. - v0.99 - 20000619 Richard Gooch <rgooch@atnf.csiro.au> - Removed dead code in <devfs_register> which used to call - <free_dentries>. - Work sponsored by SGI. - v0.100 - 20000621 Richard Gooch <rgooch@atnf.csiro.au> - Changed interface to <devfs_register>. - Work sponsored by SGI. - v0.101 - 20000622 Richard Gooch <rgooch@atnf.csiro.au> - Simplified interface to <devfs_mk_symlink> and <devfs_mk_dir>. - Simplified interface to <devfs_find_handle>. - Work sponsored by SGI. - v0.102 - 20010519 Richard Gooch <rgooch@atnf.csiro.au> - Ensure <devfs_generate_path> terminates string for root entry. - Exported <devfs_get_name> to modules. - 20010520 Richard Gooch <rgooch@atnf.csiro.au> - Make <devfs_mk_symlink> send events to devfsd. - Cleaned up option processing in <devfs_setup>. - 20010521 Richard Gooch <rgooch@atnf.csiro.au> - Fixed bugs in handling symlinks: could leak or cause Oops. - 20010522 Richard Gooch <rgooch@atnf.csiro.au> - Cleaned up directory handling by separating fops. - v0.103 - 20010601 Richard Gooch <rgooch@atnf.csiro.au> - Fixed handling of inverted options in <devfs_setup>. - v0.104 - 20010604 Richard Gooch <rgooch@atnf.csiro.au> - Adjusted <try_modload> to account for <devfs_generate_path> fix. - v0.105 - 20010617 Richard Gooch <rgooch@atnf.csiro.au> - Answered question posed by Al Viro and removed his comments. - Moved setting of registered flag after other fields are changed. - Fixed race between <devfsd_close> and <devfsd_notify_one>. - Global VFS changes added bogus BKL to <devfsd_close>: removed. - Widened locking in <devfs_readlink> and <devfs_follow_link>. - Replaced <devfsd_read> stack usage with <devfsd_ioctl> kmalloc. - Simplified locking in <devfsd_ioctl> and fixed memory leak. - v0.106 - 20010709 Richard Gooch <rgooch@atnf.csiro.au> - Removed broken devnum allocation and use <devfs_alloc_devnum>. - Fixed old devnum leak by calling new <devfs_dealloc_devnum>. - v0.107 - 20010712 Richard Gooch <rgooch@atnf.csiro.au> - Fixed bug in <devfs_setup> which could hang boot process. - v0.108 - 20010730 Richard Gooch <rgooch@atnf.csiro.au> - Added DEVFSD_NOTIFY_DELETE event. - 20010801 Richard Gooch <rgooch@atnf.csiro.au> - Removed #include <asm/segment.h>. - v0.109 - 20010807 Richard Gooch <rgooch@atnf.csiro.au> - Fixed inode table races by removing it and using - inode->u.generic_ip instead. - Moved <devfs_read_inode> into <get_vfs_inode>. - Moved <devfs_write_inode> into <devfs_notify_change>. - v0.110 - 20010808 Richard Gooch <rgooch@atnf.csiro.au> - Fixed race in <devfs_do_symlink> for uni-processor. - v0.111 - 20010818 Richard Gooch <rgooch@atnf.csiro.au> - Removed remnant of multi-mount support in <devfs_mknod>. - Removed unused DEVFS_FL_SHOW_UNREG flag. - v0.112 - 20010820 Richard Gooch <rgooch@atnf.csiro.au> - Removed nlink field from struct devfs_inode. - v0.113 - 20010823 Richard Gooch <rgooch@atnf.csiro.au> - Replaced BKL with global rwsem to protect symlink data (quick - and dirty hack). - v0.114 - 20010827 Richard Gooch <rgooch@atnf.csiro.au> - Replaced global rwsem for symlink with per-link refcount. - v0.115 - 20010919 Richard Gooch <rgooch@atnf.csiro.au> - Set inode->i_mapping->a_ops for block nodes in <get_vfs_inode>. - v0.116 - 20011008 Richard Gooch <rgooch@atnf.csiro.au> - Fixed overrun in <devfs_link> by removing function (not needed). - 20011009 Richard Gooch <rgooch@atnf.csiro.au> - Fixed buffer underrun in <try_modload>. - 20011029 Richard Gooch <rgooch@atnf.csiro.au> - Fixed race in <devfsd_ioctl> when setting event mask. - 20011114 Richard Gooch <rgooch@atnf.csiro.au> - First release of new locking code. - v1.0 - 20011117 Richard Gooch <rgooch@atnf.csiro.au> - Discard temporary buffer, now use "%s" for dentry names. - 20011118 Richard Gooch <rgooch@atnf.csiro.au> - Don't generate path in <try_modload>: use fake entry instead. - Use "existing" directory in <_devfs_make_parent_for_leaf>. - 20011122 Richard Gooch <rgooch@atnf.csiro.au> - Use slab cache rather than fixed buffer for devfsd events. - v1.1 - 20011125 Richard Gooch <rgooch@atnf.csiro.au> - Send DEVFSD_NOTIFY_REGISTERED events in <devfs_mk_dir>. - 20011127 Richard Gooch <rgooch@atnf.csiro.au> - Fixed locking bug in <devfs_d_revalidate_wait> due to typo. - Do not send CREATE, CHANGE, ASYNC_OPEN or DELETE events from - devfsd or children. - v1.2 - 20011202 Richard Gooch <rgooch@atnf.csiro.au> - Fixed bug in <devfsd_read>: was dereferencing freed pointer. - v1.3 - 20011203 Richard Gooch <rgooch@atnf.csiro.au> - Fixed bug in <devfsd_close>: was dereferencing freed pointer. - Added process group check for devfsd privileges. - v1.4 - 20011204 Richard Gooch <rgooch@atnf.csiro.au> - Use SLAB_ATOMIC in <devfsd_notify_de> from <devfs_d_delete>. - v1.5 - 20011211 Richard Gooch <rgooch@atnf.csiro.au> - Return old entry in <devfs_mk_dir> for 2.4.x kernels. - 20011212 Richard Gooch <rgooch@atnf.csiro.au> - Increment refcount on module in <check_disc_changed>. - 20011215 Richard Gooch <rgooch@atnf.csiro.au> - Created <devfs_get_handle> and exported <devfs_put>. - Increment refcount on module in <devfs_get_ops>. - Created <devfs_put_ops>. - v1.6 - 20011216 Richard Gooch <rgooch@atnf.csiro.au> - Added poisoning to <devfs_put>. - Improved debugging messages. - v1.7 - 20011221 Richard Gooch <rgooch@atnf.csiro.au> - Corrected (made useful) debugging message in <unregister>. - Moved <kmem_cache_create> in <mount_devfs_fs> to <init_devfs_fs> - 20011224 Richard Gooch <rgooch@atnf.csiro.au> - Added magic number to guard against scribbling drivers. - 20011226 Richard Gooch <rgooch@atnf.csiro.au> - Only return old entry in <devfs_mk_dir> if a directory. - Defined macros for error and debug messages. - v1.8 - 20020113 Richard Gooch <rgooch@atnf.csiro.au> - Fixed (rare, old) race in <devfs_lookup>. - v1.9 - 20020120 Richard Gooch <rgooch@atnf.csiro.au> - Fixed deadlock bug in <devfs_d_revalidate_wait>. - Tag VFS deletable in <devfs_mk_symlink> if handle ignored. - v1.10 - 20020129 Richard Gooch <rgooch@atnf.csiro.au> - Added KERN_* to remaining messages. - Cleaned up declaration of <stat_read>. - v1.11 - 20020219 Richard Gooch <rgooch@atnf.csiro.au> - Changed <devfs_rmdir> to allow later additions if not yet empty. - v1.12 - 20020406 Richard Gooch <rgooch@atnf.csiro.au> - Removed silently introduced calls to lock_kernel() and - unlock_kernel() due to recent VFS locking changes. BKL isn't - required in devfs. - v1.13 - 20020428 Richard Gooch <rgooch@atnf.csiro.au> - Removed 2.4.x compatibility code. - v1.14 - 20020510 Richard Gooch <rgooch@atnf.csiro.au> - Added BKL to <devfs_open> because drivers still need it. - v1.15 - 20020512 Richard Gooch <rgooch@atnf.csiro.au> - Protected <scan_dir_for_removable> and <get_removable_partition> - from changing directory contents. - v1.16 - 20020514 Richard Gooch <rgooch@atnf.csiro.au> - Minor cleanup of <scan_dir_for_removable>. - v1.17 - 20020721 Richard Gooch <rgooch@atnf.csiro.au> - Switched to ISO C structure field initialisers. - Switch to set_current_state() and move before add_wait_queue(). - 20020722 Richard Gooch <rgooch@atnf.csiro.au> - Fixed devfs entry leak in <devfs_readdir> when *readdir fails. - v1.18 - 20020725 Richard Gooch <rgooch@atnf.csiro.au> - Created <devfs_find_and_unregister>. - v1.19 - 20020728 Richard Gooch <rgooch@atnf.csiro.au> - Removed deprecated <devfs_find_handle>. - v1.20 - 20020820 Richard Gooch <rgooch@atnf.csiro.au> - Fixed module unload race in <devfs_open>. - v1.21 - 20021013 Richard Gooch <rgooch@atnf.csiro.au> - Removed DEVFS_ FL_AUTO_OWNER. - Switched lingering structure field initialiser to ISO C. - Added locking when updating FCB flags. - v1.22 -*/ -#include <linux/types.h> -#include <linux/errno.h> -#include <linux/time.h> -#include <linux/tty.h> -#include <linux/timer.h> -#include <linux/config.h> -#include <linux/kernel.h> -#include <linux/wait.h> -#include <linux/string.h> -#include <linux/slab.h> -#include <linux/ioport.h> -#include <linux/delay.h> -#include <linux/ctype.h> -#include <linux/mm.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/devfs_fs.h> -#include <linux/devfs_fs_kernel.h> -#include <linux/smp_lock.h> -#include <linux/smp.h> -#include <linux/rwsem.h> -#include <linux/sched.h> -#include <linux/namei.h> -#include <linux/bitops.h> - -#include <asm/uaccess.h> -#include <asm/io.h> -#include <asm/processor.h> -#include <asm/system.h> -#include <asm/pgtable.h> -#include <asm/atomic.h> - -#define DEVFS_VERSION "2004-01-31" - -#define DEVFS_NAME "devfs" - -#define FIRST_INODE 1 - -#define STRING_LENGTH 256 -#define FAKE_BLOCK_SIZE 1024 -#define POISON_PTR ( *(void **) poison_array ) -#define MAGIC_VALUE 0x327db823 - -#ifndef TRUE -# define TRUE 1 -# define FALSE 0 -#endif - -#define MODE_DIR (S_IFDIR | S_IWUSR | S_IRUGO | S_IXUGO) - -#define DEBUG_NONE 0x0000000 -#define DEBUG_MODULE_LOAD 0x0000001 -#define DEBUG_REGISTER 0x0000002 -#define DEBUG_UNREGISTER 0x0000004 -#define DEBUG_FREE 0x0000008 -#define DEBUG_SET_FLAGS 0x0000010 -#define DEBUG_S_READ 0x0000100 /* Break */ -#define DEBUG_I_LOOKUP 0x0001000 /* Break */ -#define DEBUG_I_CREATE 0x0002000 -#define DEBUG_I_GET 0x0004000 -#define DEBUG_I_CHANGE 0x0008000 -#define DEBUG_I_UNLINK 0x0010000 -#define DEBUG_I_RLINK 0x0020000 -#define DEBUG_I_FLINK 0x0040000 -#define DEBUG_I_MKNOD 0x0080000 -#define DEBUG_F_READDIR 0x0100000 /* Break */ -#define DEBUG_D_DELETE 0x1000000 /* Break */ -#define DEBUG_D_RELEASE 0x2000000 -#define DEBUG_D_IPUT 0x4000000 -#define DEBUG_ALL 0xfffffff -#define DEBUG_DISABLED DEBUG_NONE - -#define OPTION_NONE 0x00 -#define OPTION_MOUNT 0x01 - -#define PRINTK(format, args...) \ - {printk (KERN_ERR "%s" format, __FUNCTION__ , ## args);} - -#define OOPS(format, args...) \ - {printk (KERN_CRIT "%s" format, __FUNCTION__ , ## args); \ - printk ("Forcing Oops\n"); \ - BUG();} - -#ifdef CONFIG_DEVFS_DEBUG -# define VERIFY_ENTRY(de) \ - {if ((de) && (de)->magic_number != MAGIC_VALUE) \ - OOPS ("(%p): bad magic value: %x\n", (de), (de)->magic_number);} -# define WRITE_ENTRY_MAGIC(de,magic) (de)->magic_number = (magic) -# define DPRINTK(flag, format, args...) \ - {if (devfs_debug & flag) \ - printk (KERN_INFO "%s" format, __FUNCTION__ , ## args);} -#else -# define VERIFY_ENTRY(de) -# define WRITE_ENTRY_MAGIC(de,magic) -# define DPRINTK(flag, format, args...) -#endif - -typedef struct devfs_entry *devfs_handle_t; - -struct directory_type { - rwlock_t lock; /* Lock for searching(R)/updating(W) */ - struct devfs_entry *first; - struct devfs_entry *last; - unsigned char no_more_additions:1; -}; - -struct symlink_type { - unsigned int length; /* Not including the NULL-termimator */ - char *linkname; /* This is NULL-terminated */ -}; - -struct devfs_inode { /* This structure is for "persistent" inode storage */ - struct dentry *dentry; - struct timespec atime; - struct timespec mtime; - struct timespec ctime; - unsigned int ino; /* Inode number as seen in the VFS */ - uid_t uid; - gid_t gid; -}; - -struct devfs_entry { -#ifdef CONFIG_DEVFS_DEBUG - unsigned int magic_number; -#endif - void *info; - atomic_t refcount; /* When this drops to zero, it's unused */ - union { - struct directory_type dir; - dev_t dev; - struct symlink_type symlink; - const char *name; /* Only used for (mode == 0) */ - } u; - struct devfs_entry *prev; /* Previous entry in the parent directory */ - struct devfs_entry *next; /* Next entry in the parent directory */ - struct devfs_entry *parent; /* The parent directory */ - struct devfs_inode inode; - umode_t mode; - unsigned short namelen; /* I think 64k+ filenames are a way off... */ - unsigned char vfs:1; /* Whether the VFS may delete the entry */ - char name[1]; /* This is just a dummy: the allocated array - is bigger. This is NULL-terminated */ -}; - -/* The root of the device tree */ -static struct devfs_entry *root_entry; - -struct devfsd_buf_entry { - struct devfs_entry *de; /* The name is generated with this */ - unsigned short type; /* The type of event */ - umode_t mode; - uid_t uid; - gid_t gid; - struct devfsd_buf_entry *next; -}; - -struct fs_info { /* This structure is for the mounted devfs */ - struct super_block *sb; - spinlock_t devfsd_buffer_lock; /* Lock when inserting/deleting events */ - struct devfsd_buf_entry *devfsd_first_event; - struct devfsd_buf_entry *devfsd_last_event; - volatile int devfsd_sleeping; - volatile struct task_struct *devfsd_task; - volatile pid_t devfsd_pgrp; - volatile struct file *devfsd_file; - struct devfsd_notify_struct *devfsd_info; - volatile unsigned long devfsd_event_mask; - atomic_t devfsd_overrun_count; - wait_queue_head_t devfsd_wait_queue; /* Wake devfsd on input */ - wait_queue_head_t revalidate_wait_queue; /* Wake when devfsd sleeps */ -}; - -static struct fs_info fs_info = {.devfsd_buffer_lock = SPIN_LOCK_UNLOCKED }; -static kmem_cache_t *devfsd_buf_cache; -#ifdef CONFIG_DEVFS_DEBUG -static unsigned int devfs_debug_init __initdata = DEBUG_NONE; -static unsigned int devfs_debug = DEBUG_NONE; -static DEFINE_SPINLOCK(stat_lock); -static unsigned int stat_num_entries; -static unsigned int stat_num_bytes; -#endif -static unsigned char poison_array[8] = - { 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a }; - -#ifdef CONFIG_DEVFS_MOUNT -static unsigned int boot_options = OPTION_MOUNT; -#else -static unsigned int boot_options = OPTION_NONE; -#endif - -/* Forward function declarations */ -static devfs_handle_t _devfs_walk_path(struct devfs_entry *dir, - const char *name, int namelen, - int traverse_symlink); -static ssize_t devfsd_read(struct file *file, char __user *buf, size_t len, - loff_t * ppos); -static int devfsd_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg); -static int devfsd_close(struct inode *inode, struct file *file); -#ifdef CONFIG_DEVFS_DEBUG -static ssize_t stat_read(struct file *file, char __user *buf, size_t len, - loff_t * ppos); -static const struct file_operations stat_fops = { - .open = nonseekable_open, - .read = stat_read, -}; -#endif - -/* Devfs daemon file operations */ -static const struct file_operations devfsd_fops = { - .open = nonseekable_open, - .read = devfsd_read, - .ioctl = devfsd_ioctl, - .release = devfsd_close, -}; - -/* Support functions follow */ - -/** - * devfs_get - Get a reference to a devfs entry. - * @de: The devfs entry. - */ - -static struct devfs_entry *devfs_get(struct devfs_entry *de) -{ - VERIFY_ENTRY(de); - if (de) - atomic_inc(&de->refcount); - return de; -} /* End Function devfs_get */ - -/** - * devfs_put - Put (release) a reference to a devfs entry. - * @de: The handle to the devfs entry. - */ - -static void devfs_put(devfs_handle_t de) -{ - if (!de) - return; - VERIFY_ENTRY(de); - if (de->info == POISON_PTR) - OOPS("(%p): poisoned pointer\n", de); - if (!atomic_dec_and_test(&de->refcount)) - return; - if (de == root_entry) - OOPS("(%p): root entry being freed\n", de); - DPRINTK(DEBUG_FREE, "(%s): de: %p, parent: %p \"%s\"\n", - de->name, de, de->parent, - de->parent ? de->parent->name : "no parent"); - if (S_ISLNK(de->mode)) - kfree(de->u.symlink.linkname); - WRITE_ENTRY_MAGIC(de, 0); -#ifdef CONFIG_DEVFS_DEBUG - spin_lock(&stat_lock); - --stat_num_entries; - stat_num_bytes -= sizeof *de + de->namelen; - if (S_ISLNK(de->mode)) - stat_num_bytes -= de->u.symlink.length + 1; - spin_unlock(&stat_lock); -#endif - de->info = POISON_PTR; - kfree(de); -} /* End Function devfs_put */ - -/** - * _devfs_search_dir - Search for a devfs entry in a directory. - * @dir: The directory to search. - * @name: The name of the entry to search for. - * @namelen: The number of characters in @name. - * - * Search for a devfs entry in a directory and returns a pointer to the entry - * on success, else %NULL. The directory must be locked already. - * An implicit devfs_get() is performed on the returned entry. - */ - -static struct devfs_entry *_devfs_search_dir(struct devfs_entry *dir, - const char *name, - unsigned int namelen) -{ - struct devfs_entry *curr; - - if (!S_ISDIR(dir->mode)) { - PRINTK("(%s): not a directory\n", dir->name); - return NULL; - } - for (curr = dir->u.dir.first; curr != NULL; curr = curr->next) { - if (curr->namelen != namelen) - continue; - if (memcmp(curr->name, name, namelen) == 0) - break; - /* Not found: try the next one */ - } - return devfs_get(curr); -} /* End Function _devfs_search_dir */ - -/** - * _devfs_alloc_entry - Allocate a devfs entry. - * @name: the name of the entry - * @namelen: the number of characters in @name - * @mode: the mode for the entry - * - * Allocate a devfs entry and returns a pointer to the entry on success, else - * %NULL. - */ - -static struct devfs_entry *_devfs_alloc_entry(const char *name, - unsigned int namelen, - umode_t mode) -{ - struct devfs_entry *new; - static unsigned long inode_counter = FIRST_INODE; - static DEFINE_SPINLOCK(counter_lock); - - if (name && (namelen < 1)) - namelen = strlen(name); - if ((new = kmalloc(sizeof *new + namelen, GFP_KERNEL)) == NULL) - return NULL; - memset(new, 0, sizeof *new + namelen); /* Will set '\0' on name */ - new->mode = mode; - if (S_ISDIR(mode)) - rwlock_init(&new->u.dir.lock); - atomic_set(&new->refcount, 1); - spin_lock(&counter_lock); - new->inode.ino = inode_counter++; - spin_unlock(&counter_lock); - if (name) - memcpy(new->name, name, namelen); - new->namelen = namelen; - WRITE_ENTRY_MAGIC(new, MAGIC_VALUE); -#ifdef CONFIG_DEVFS_DEBUG - spin_lock(&stat_lock); - ++stat_num_entries; - stat_num_bytes += sizeof *new + namelen; - spin_unlock(&stat_lock); -#endif - return new; -} /* End Function _devfs_alloc_entry */ - -/** - * _devfs_append_entry - Append a devfs entry to a directory's child list. - * @dir: The directory to add to. - * @de: The devfs entry to append. - * @old_de: If an existing entry exists, it will be written here. This may - * be %NULL. An implicit devfs_get() is performed on this entry. - * - * Append a devfs entry to a directory's list of children, checking first to - * see if an entry of the same name exists. The directory will be locked. - * The value 0 is returned on success, else a negative error code. - * On failure, an implicit devfs_put() is performed on %de. - */ - -static int _devfs_append_entry(devfs_handle_t dir, devfs_handle_t de, - devfs_handle_t * old_de) -{ - int retval; - - if (old_de) - *old_de = NULL; - if (!S_ISDIR(dir->mode)) { - PRINTK("(%s): dir: \"%s\" is not a directory\n", de->name, - dir->name); - devfs_put(de); - return -ENOTDIR; - } - write_lock(&dir->u.dir.lock); - if (dir->u.dir.no_more_additions) - retval = -ENOENT; - else { - struct devfs_entry *old; - - old = _devfs_search_dir(dir, de->name, de->namelen); - if (old_de) - *old_de = old; - else - devfs_put(old); - if (old == NULL) { - de->parent = dir; - de->prev = dir->u.dir.last; - /* Append to the directory's list of children */ - if (dir->u.dir.first == NULL) - dir->u.dir.first = de; - else - dir->u.dir.last->next = de; - dir->u.dir.last = de; - retval = 0; - } else - retval = -EEXIST; - } - write_unlock(&dir->u.dir.lock); - if (retval) - devfs_put(de); - return retval; -} /* End Function _devfs_append_entry */ - -/** - * _devfs_get_root_entry - Get the root devfs entry. - * - * Returns the root devfs entry on success, else %NULL. - * - * TODO it must be called asynchronously due to the fact - * that devfs is initialized relatively late. Proper way - * is to remove module_init from init_devfs_fs and manually - * call it early enough during system init - */ - -static struct devfs_entry *_devfs_get_root_entry(void) -{ - struct devfs_entry *new; - static DEFINE_SPINLOCK(root_lock); - - if (root_entry) - return root_entry; - - new = _devfs_alloc_entry(NULL, 0, MODE_DIR); - if (new == NULL) - return NULL; - - spin_lock(&root_lock); - if (root_entry) { - spin_unlock(&root_lock); - devfs_put(new); - return root_entry; - } - root_entry = new; - spin_unlock(&root_lock); - - return root_entry; -} /* End Function _devfs_get_root_entry */ - -/** - * _devfs_descend - Descend down a tree using the next component name. - * @dir: The directory to search. - * @name: The component name to search for. - * @namelen: The length of %name. - * @next_pos: The position of the next '/' or '\0' is written here. - * - * Descend into a directory, searching for a component. This function forms - * the core of a tree-walking algorithm. The directory will be locked. - * The devfs entry corresponding to the component is returned. If there is - * no matching entry, %NULL is returned. - * An implicit devfs_get() is performed on the returned entry. - */ - -static struct devfs_entry *_devfs_descend(struct devfs_entry *dir, - const char *name, int namelen, - int *next_pos) -{ - const char *stop, *ptr; - struct devfs_entry *entry; - - if ((namelen >= 3) && (strncmp(name, "../", 3) == 0)) { /* Special-case going to parent directory */ - *next_pos = 3; - return devfs_get(dir->parent); - } - stop = name + namelen; - /* Search for a possible '/' */ - for (ptr = name; (ptr < stop) && (*ptr != '/'); ++ptr) ; - *next_pos = ptr - name; - read_lock(&dir->u.dir.lock); - entry = _devfs_search_dir(dir, name, *next_pos); - read_unlock(&dir->u.dir.lock); - return entry; -} /* End Function _devfs_descend */ - -static devfs_handle_t _devfs_make_parent_for_leaf(struct devfs_entry *dir, - const char *name, - int namelen, int *leaf_pos) -{ - int next_pos = 0; - - if (dir == NULL) - dir = _devfs_get_root_entry(); - if (dir == NULL) - return NULL; - devfs_get(dir); - /* Search for possible trailing component and ignore it */ - for (--namelen; (namelen > 0) && (name[namelen] != '/'); --namelen) ; - *leaf_pos = (name[namelen] == '/') ? (namelen + 1) : 0; - for (; namelen > 0; name += next_pos, namelen -= next_pos) { - struct devfs_entry *de, *old = NULL; - - if ((de = - _devfs_descend(dir, name, namelen, &next_pos)) == NULL) { - de = _devfs_alloc_entry(name, next_pos, MODE_DIR); - devfs_get(de); - if (!de || _devfs_append_entry(dir, de, &old)) { - devfs_put(de); - if (!old || !S_ISDIR(old->mode)) { - devfs_put(old); - devfs_put(dir); - return NULL; - } - de = old; /* Use the existing directory */ - } - } - if (de == dir->parent) { - devfs_put(dir); - devfs_put(de); - return NULL; - } - devfs_put(dir); - dir = de; - if (name[next_pos] == '/') - ++next_pos; - } - return dir; -} /* End Function _devfs_make_parent_for_leaf */ - -static devfs_handle_t _devfs_prepare_leaf(devfs_handle_t * dir, - const char *name, umode_t mode) -{ - int namelen, leaf_pos; - struct devfs_entry *de; - - namelen = strlen(name); - if ((*dir = _devfs_make_parent_for_leaf(*dir, name, namelen, - &leaf_pos)) == NULL) { - PRINTK("(%s): could not create parent path\n", name); - return NULL; - } - if ((de = _devfs_alloc_entry(name + leaf_pos, namelen - leaf_pos, mode)) - == NULL) { - PRINTK("(%s): could not allocate entry\n", name); - devfs_put(*dir); - return NULL; - } - return de; -} /* End Function _devfs_prepare_leaf */ - -static devfs_handle_t _devfs_walk_path(struct devfs_entry *dir, - const char *name, int namelen, - int traverse_symlink) -{ - int next_pos = 0; - - if (dir == NULL) - dir = _devfs_get_root_entry(); - if (dir == NULL) - return NULL; - devfs_get(dir); - for (; namelen > 0; name += next_pos, namelen -= next_pos) { - struct devfs_entry *de, *link; - - if (!S_ISDIR(dir->mode)) { - devfs_put(dir); - return NULL; - } - - if ((de = - _devfs_descend(dir, name, namelen, &next_pos)) == NULL) { - devfs_put(dir); - return NULL; - } - if (S_ISLNK(de->mode) && traverse_symlink) { /* Need to follow the link: this is a stack chomper */ - /* FIXME what if it puts outside of mounted tree? */ - link = _devfs_walk_path(dir, de->u.symlink.linkname, - de->u.symlink.length, TRUE); - devfs_put(de); - if (!link) { - devfs_put(dir); - return NULL; - } - de = link; - } - devfs_put(dir); - dir = de; - if (name[next_pos] == '/') - ++next_pos; - } - return dir; -} /* End Function _devfs_walk_path */ - -/** - * _devfs_find_entry - Find a devfs entry. - * @dir: The handle to the parent devfs directory entry. If this is %NULL the - * name is relative to the root of the devfs. - * @name: The name of the entry. This may be %NULL. - * @traverse_symlink: If %TRUE then symbolic links are traversed. - * - * Returns the devfs_entry pointer on success, else %NULL. An implicit - * devfs_get() is performed. - */ - -static struct devfs_entry *_devfs_find_entry(devfs_handle_t dir, - const char *name, - int traverse_symlink) -{ - unsigned int namelen = strlen(name); - - if (name[0] == '/') { - /* Skip leading pathname component */ - if (namelen < 2) { - PRINTK("(%s): too short\n", name); - return NULL; - } - for (++name, --namelen; (*name != '/') && (namelen > 0); - ++name, --namelen) ; - if (namelen < 2) { - PRINTK("(%s): too short\n", name); - return NULL; - } - ++name; - --namelen; - } - return _devfs_walk_path(dir, name, namelen, traverse_symlink); -} /* End Function _devfs_find_entry */ - -static struct devfs_entry *get_devfs_entry_from_vfs_inode(struct inode *inode) -{ - if (inode == NULL) - return NULL; - VERIFY_ENTRY((struct devfs_entry *)inode->u.generic_ip); - return inode->u.generic_ip; -} /* End Function get_devfs_entry_from_vfs_inode */ - -/** - * free_dentry - Free the dentry for a device entry and invalidate inode. - * @de: The entry. - * - * This must only be called after the entry has been unhooked from its - * parent directory. - */ - -static void free_dentry(struct devfs_entry *de) -{ - struct dentry *dentry = de->inode.dentry; - - if (!dentry) - return; - spin_lock(&dcache_lock); - dget_locked(dentry); - spin_unlock(&dcache_lock); - /* Forcefully remove the inode */ - if (dentry->d_inode != NULL) - dentry->d_inode->i_nlink = 0; - d_drop(dentry); - dput(dentry); -} /* End Function free_dentry */ - -/** - * is_devfsd_or_child - Test if the current process is devfsd or one of its children. - * @fs_info: The filesystem information. - * - * Returns %TRUE if devfsd or child, else %FALSE. - */ - -static int is_devfsd_or_child(struct fs_info *fs_info) -{ - struct task_struct *p = current; - - if (p == fs_info->devfsd_task) - return (TRUE); - if (process_group(p) == fs_info->devfsd_pgrp) - return (TRUE); - read_lock(&tasklist_lock); - for (; p != &init_task; p = p->real_parent) { - if (p == fs_info->devfsd_task) { - read_unlock(&tasklist_lock); - return (TRUE); - } - } - read_unlock(&tasklist_lock); - return (FALSE); -} /* End Function is_devfsd_or_child */ - -/** - * devfsd_queue_empty - Test if devfsd has work pending in its event queue. - * @fs_info: The filesystem information. - * - * Returns %TRUE if the queue is empty, else %FALSE. - */ - -static inline int devfsd_queue_empty(struct fs_info *fs_info) -{ - return (fs_info->devfsd_last_event) ? FALSE : TRUE; -} /* End Function devfsd_queue_empty */ - -/** - * wait_for_devfsd_finished - Wait for devfsd to finish processing its event queue. - * @fs_info: The filesystem information. - * - * Returns %TRUE if no more waiting will be required, else %FALSE. - */ - -static int wait_for_devfsd_finished(struct fs_info *fs_info) -{ - DECLARE_WAITQUEUE(wait, current); - - if (fs_info->devfsd_task == NULL) - return (TRUE); - if (devfsd_queue_empty(fs_info) && fs_info->devfsd_sleeping) - return TRUE; - if (is_devfsd_or_child(fs_info)) - return (FALSE); - set_current_state(TASK_UNINTERRUPTIBLE); - add_wait_queue(&fs_info->revalidate_wait_queue, &wait); - if (!devfsd_queue_empty(fs_info) || !fs_info->devfsd_sleeping) - if (fs_info->devfsd_task) - schedule(); - remove_wait_queue(&fs_info->revalidate_wait_queue, &wait); - __set_current_state(TASK_RUNNING); - return (TRUE); -} /* End Function wait_for_devfsd_finished */ - -/** - * devfsd_notify_de - Notify the devfsd daemon of a change. - * @de: The devfs entry that has changed. This and all parent entries will - * have their reference counts incremented if the event was queued. - * @type: The type of change. - * @mode: The mode of the entry. - * @uid: The user ID. - * @gid: The group ID. - * @fs_info: The filesystem info. - * - * Returns %TRUE if an event was queued and devfsd woken up, else %FALSE. - */ - -static int devfsd_notify_de(struct devfs_entry *de, - unsigned short type, umode_t mode, - uid_t uid, gid_t gid, struct fs_info *fs_info) -{ - struct devfsd_buf_entry *entry; - struct devfs_entry *curr; - - if (!(fs_info->devfsd_event_mask & (1 << type))) - return (FALSE); - if ((entry = kmem_cache_alloc(devfsd_buf_cache, SLAB_KERNEL)) == NULL) { - atomic_inc(&fs_info->devfsd_overrun_count); - return (FALSE); - } - for (curr = de; curr != NULL; curr = curr->parent) - devfs_get(curr); - entry->de = de; - entry->type = type; - entry->mode = mode; - entry->uid = uid; - entry->gid = gid; - entry->next = NULL; - spin_lock(&fs_info->devfsd_buffer_lock); - if (!fs_info->devfsd_first_event) - fs_info->devfsd_first_event = entry; - if (fs_info->devfsd_last_event) - fs_info->devfsd_last_event->next = entry; - fs_info->devfsd_last_event = entry; - spin_unlock(&fs_info->devfsd_buffer_lock); - wake_up_interruptible(&fs_info->devfsd_wait_queue); - return (TRUE); -} /* End Function devfsd_notify_de */ - -/** - * devfsd_notify - Notify the devfsd daemon of a change. - * @de: The devfs entry that has changed. - * @type: The type of change event. - * @wait: If TRUE, the function waits for the daemon to finish processing - * the event. - */ - -static void devfsd_notify(struct devfs_entry *de, unsigned short type) -{ - devfsd_notify_de(de, type, de->mode, current->euid, - current->egid, &fs_info); -} - -static int devfs_mk_dev(dev_t dev, umode_t mode, const char *fmt, va_list args) -{ - struct devfs_entry *dir = NULL, *de; - char buf[64]; - int error, n; - - n = vsnprintf(buf, sizeof(buf), fmt, args); - if (n >= sizeof(buf) || !buf[0]) { - printk(KERN_WARNING "%s: invalid format string %s\n", - __FUNCTION__, fmt); - return -EINVAL; - } - - de = _devfs_prepare_leaf(&dir, buf, mode); - if (!de) { - printk(KERN_WARNING "%s: could not prepare leaf for %s\n", - __FUNCTION__, buf); - return -ENOMEM; /* could be more accurate... */ - } - - de->u.dev = dev; - - error = _devfs_append_entry(dir, de, NULL); - if (error) { - printk(KERN_WARNING "%s: could not append to parent for %s\n", - __FUNCTION__, buf); - goto out; - } - - devfsd_notify(de, DEVFSD_NOTIFY_REGISTERED); - out: - devfs_put(dir); - return error; -} - -int devfs_mk_bdev(dev_t dev, umode_t mode, const char *fmt, ...) -{ - va_list args; - - if (!S_ISBLK(mode)) { - printk(KERN_WARNING "%s: invalide mode (%u) for %s\n", - __FUNCTION__, mode, fmt); - return -EINVAL; - } - - va_start(args, fmt); - return devfs_mk_dev(dev, mode, fmt, args); -} - -EXPORT_SYMBOL(devfs_mk_bdev); - -int devfs_mk_cdev(dev_t dev, umode_t mode, const char *fmt, ...) -{ - va_list args; - - if (!S_ISCHR(mode)) { - printk(KERN_WARNING "%s: invalide mode (%u) for %s\n", - __FUNCTION__, mode, fmt); - return -EINVAL; - } - - va_start(args, fmt); - return devfs_mk_dev(dev, mode, fmt, args); -} - -EXPORT_SYMBOL(devfs_mk_cdev); - -/** - * _devfs_unhook - Unhook a device entry from its parents list - * @de: The entry to unhook. - * - * Returns %TRUE if the entry was unhooked, else %FALSE if it was - * previously unhooked. - * The caller must have a write lock on the parent directory. - */ - -static int _devfs_unhook(struct devfs_entry *de) -{ - struct devfs_entry *parent; - - if (!de || (de->prev == de)) - return FALSE; - parent = de->parent; - if (de->prev == NULL) - parent->u.dir.first = de->next; - else - de->prev->next = de->next; - if (de->next == NULL) - parent->u.dir.last = de->prev; - else - de->next->prev = de->prev; - de->prev = de; /* Indicate we're unhooked */ - de->next = NULL; /* Force early termination for <devfs_readdir> */ - return TRUE; -} /* End Function _devfs_unhook */ - -/** - * _devfs_unregister - Unregister a device entry from its parent. - * @dir: The parent directory. - * @de: The entry to unregister. - * - * The caller must have a write lock on the parent directory, which is - * unlocked by this function. - */ - -static void _devfs_unregister(struct devfs_entry *dir, struct devfs_entry *de) -{ - int unhooked = _devfs_unhook(de); - - write_unlock(&dir->u.dir.lock); - if (!unhooked) - return; - devfs_get(dir); - devfsd_notify(de, DEVFSD_NOTIFY_UNREGISTERED); - free_dentry(de); - devfs_put(dir); - if (!S_ISDIR(de->mode)) - return; - while (TRUE) { /* Recursively unregister: this is a stack chomper */ - struct devfs_entry *child; - - write_lock(&de->u.dir.lock); - de->u.dir.no_more_additions = TRUE; - child = de->u.dir.first; - VERIFY_ENTRY(child); - _devfs_unregister(de, child); - if (!child) - break; - DPRINTK(DEBUG_UNREGISTER, "(%s): child: %p refcount: %d\n", - child->name, child, atomic_read(&child->refcount)); - devfs_put(child); - } -} /* End Function _devfs_unregister */ - -static int devfs_do_symlink(devfs_handle_t dir, const char *name, - const char *link, devfs_handle_t * handle) -{ - int err; - unsigned int linklength; - char *newlink; - struct devfs_entry *de; - - if (handle != NULL) - *handle = NULL; - if (name == NULL) { - PRINTK("(): NULL name pointer\n"); - return -EINVAL; - } - if (link == NULL) { - PRINTK("(%s): NULL link pointer\n", name); - return -EINVAL; - } - linklength = strlen(link); - if ((newlink = kmalloc(linklength + 1, GFP_KERNEL)) == NULL) - return -ENOMEM; - memcpy(newlink, link, linklength); - newlink[linklength] = '\0'; - if ((de = _devfs_prepare_leaf(&dir, name, S_IFLNK | S_IRUGO | S_IXUGO)) - == NULL) { - PRINTK("(%s): could not prepare leaf\n", name); - kfree(newlink); - return -ENOTDIR; - } - de->info = NULL; - de->u.symlink.linkname = newlink; - de->u.symlink.length = linklength; - if ((err = _devfs_append_entry(dir, de, NULL)) != 0) { - PRINTK("(%s): could not append to parent, err: %d\n", name, - err); - devfs_put(dir); - return err; - } - devfs_put(dir); -#ifdef CONFIG_DEVFS_DEBUG - spin_lock(&stat_lock); - stat_num_bytes += linklength + 1; - spin_unlock(&stat_lock); -#endif - if (handle != NULL) - *handle = de; - return 0; -} /* End Function devfs_do_symlink */ - -/** - * devfs_mk_symlink Create a symbolic link in the devfs namespace. - * @from: The name of the entry. - * @to: Name of the destination - * - * Returns 0 on success, else a negative error code is returned. - */ - -int devfs_mk_symlink(const char *from, const char *to) -{ - devfs_handle_t de; - int err; - - err = devfs_do_symlink(NULL, from, to, &de); - if (!err) { - de->vfs = TRUE; - devfsd_notify(de, DEVFSD_NOTIFY_REGISTERED); - } - - return err; -} - -/** - * devfs_mk_dir - Create a directory in the devfs namespace. - * new name is relative to the root of the devfs. - * @fmt: The name of the entry. - * - * Use of this function is optional. The devfs_register() function - * will automatically create intermediate directories as needed. This function - * is provided for efficiency reasons, as it provides a handle to a directory. - * On failure %NULL is returned. - */ - -int devfs_mk_dir(const char *fmt, ...) -{ - struct devfs_entry *dir = NULL, *de = NULL, *old; - char buf[64]; - va_list args; - int error, n; - - va_start(args, fmt); - n = vsnprintf(buf, 64, fmt, args); - if (n >= 64 || !buf[0]) { - printk(KERN_WARNING "%s: invalid argument.", __FUNCTION__); - return -EINVAL; - } - - de = _devfs_prepare_leaf(&dir, buf, MODE_DIR); - if (!de) { - PRINTK("(%s): could not prepare leaf\n", buf); - return -EINVAL; - } - - error = _devfs_append_entry(dir, de, &old); - if (error == -EEXIST && S_ISDIR(old->mode)) { - /* - * devfs_mk_dir() of an already-existing directory will - * return success. - */ - error = 0; - goto out_put; - } else if (error) { - PRINTK("(%s): could not append to dir: %p \"%s\"\n", - buf, dir, dir->name); - devfs_put(old); - goto out_put; - } - - devfsd_notify(de, DEVFSD_NOTIFY_REGISTERED); - - out_put: - devfs_put(dir); - return error; -} - -void devfs_remove(const char *fmt, ...) -{ - char buf[64]; - va_list args; - int n; - - va_start(args, fmt); - n = vsnprintf(buf, sizeof(buf), fmt, args); - if (n < sizeof(buf) && buf[0]) { - devfs_handle_t de = _devfs_find_entry(NULL, buf, 0); - - if (!de) { - printk(KERN_ERR "%s: %s not found, cannot remove\n", - __FUNCTION__, buf); - dump_stack(); - return; - } - - write_lock(&de->parent->u.dir.lock); - _devfs_unregister(de->parent, de); - devfs_put(de); - devfs_put(de); - } -} - -/** - * devfs_generate_path - Generate a pathname for an entry, relative to the devfs root. - * @de: The devfs entry. - * @path: The buffer to write the pathname to. The pathname and '\0' - * terminator will be written at the end of the buffer. - * @buflen: The length of the buffer. - * - * Returns the offset in the buffer where the pathname starts on success, - * else a negative error code. - */ - -static int devfs_generate_path(devfs_handle_t de, char *path, int buflen) -{ - int pos; -#define NAMEOF(de) ( (de)->mode ? (de)->name : (de)->u.name ) - - if (de == NULL) - return -EINVAL; - VERIFY_ENTRY(de); - if (de->namelen >= buflen) - return -ENAMETOOLONG; /* Must be first */ - path[buflen - 1] = '\0'; - if (de->parent == NULL) - return buflen - 1; /* Don't prepend root */ - pos = buflen - de->namelen - 1; - memcpy(path + pos, NAMEOF(de), de->namelen); - for (de = de->parent; de->parent != NULL; de = de->parent) { - if (pos - de->namelen - 1 < 0) - return -ENAMETOOLONG; - path[--pos] = '/'; - pos -= de->namelen; - memcpy(path + pos, NAMEOF(de), de->namelen); - } - return pos; -} /* End Function devfs_generate_path */ - -/** - * devfs_setup - Process kernel boot options. - * @str: The boot options after the "devfs=". - */ - -static int __init devfs_setup(char *str) -{ - static struct { - char *name; - unsigned int mask; - unsigned int *opt; - } devfs_options_tab[] __initdata = { -#ifdef CONFIG_DEVFS_DEBUG - { - "dall", DEBUG_ALL, &devfs_debug_init}, { - "dmod", DEBUG_MODULE_LOAD, &devfs_debug_init}, { - "dreg", DEBUG_REGISTER, &devfs_debug_init}, { - "dunreg", DEBUG_UNREGISTER, &devfs_debug_init}, { - "dfree", DEBUG_FREE, &devfs_debug_init}, { - "diget", DEBUG_I_GET, &devfs_debug_init}, { - "dchange", DEBUG_SET_FLAGS, &devfs_debug_init}, { - "dsread", DEBUG_S_READ, &devfs_debug_init}, { - "dichange", DEBUG_I_CHANGE, &devfs_debug_init}, { - "dimknod", DEBUG_I_MKNOD, &devfs_debug_init}, { - "dilookup", DEBUG_I_LOOKUP, &devfs_debug_init}, { - "diunlink", DEBUG_I_UNLINK, &devfs_debug_init}, -#endif /* CONFIG_DEVFS_DEBUG */ - { - "mount", OPTION_MOUNT, &boot_options}, { - NULL, 0, NULL} - }; - - while ((*str != '\0') && !isspace(*str)) { - int i, found = 0, invert = 0; - - if (strncmp(str, "no", 2) == 0) { - invert = 1; - str += 2; - } - for (i = 0; devfs_options_tab[i].name != NULL; i++) { - int len = strlen(devfs_options_tab[i].name); - - if (strncmp(str, devfs_options_tab[i].name, len) == 0) { - if (invert) - *devfs_options_tab[i].opt &= - ~devfs_options_tab[i].mask; - else - *devfs_options_tab[i].opt |= - devfs_options_tab[i].mask; - str += len; - found = 1; - break; - } - } - if (!found) - return 0; /* No match */ - if (*str != ',') - return 0; /* No more options */ - ++str; - } - return 1; -} /* End Function devfs_setup */ - -__setup("devfs=", devfs_setup); - -EXPORT_SYMBOL(devfs_mk_dir); -EXPORT_SYMBOL(devfs_remove); - -/** - * try_modload - Notify devfsd of an inode lookup by a non-devfsd process. - * @parent: The parent devfs entry. - * @fs_info: The filesystem info. - * @name: The device name. - * @namelen: The number of characters in @name. - * @buf: A working area that will be used. This must not go out of scope - * until devfsd is idle again. - * - * Returns 0 on success (event was queued), else a negative error code. - */ - -static int try_modload(struct devfs_entry *parent, struct fs_info *fs_info, - const char *name, unsigned namelen, - struct devfs_entry *buf) -{ - if (!(fs_info->devfsd_event_mask & (1 << DEVFSD_NOTIFY_LOOKUP))) - return -ENOENT; - if (is_devfsd_or_child(fs_info)) - return -ENOENT; - memset(buf, 0, sizeof *buf); - atomic_set(&buf->refcount, 1); - buf->parent = parent; - buf->namelen = namelen; - buf->u.name = name; - WRITE_ENTRY_MAGIC(buf, MAGIC_VALUE); - if (!devfsd_notify_de(buf, DEVFSD_NOTIFY_LOOKUP, 0, - current->euid, current->egid, fs_info)) - return -ENOENT; - /* Possible success: event has been queued */ - return 0; -} /* End Function try_modload */ - -/* Superblock operations follow */ - -static struct inode_operations devfs_iops; -static struct inode_operations devfs_dir_iops; -static const struct file_operations devfs_fops; -static const struct file_operations devfs_dir_fops; -static struct inode_operations devfs_symlink_iops; - -static int devfs_notify_change(struct dentry *dentry, struct iattr *iattr) -{ - int retval; - struct devfs_entry *de; - struct inode *inode = dentry->d_inode; - struct fs_info *fs_info = inode->i_sb->s_fs_info; - - de = get_devfs_entry_from_vfs_inode(inode); - if (de == NULL) - return -ENODEV; - retval = inode_change_ok(inode, iattr); - if (retval != 0) - return retval; - retval = inode_setattr(inode, iattr); - if (retval != 0) - return retval; - DPRINTK(DEBUG_I_CHANGE, "(%d): VFS inode: %p devfs_entry: %p\n", - (int)inode->i_ino, inode, de); - DPRINTK(DEBUG_I_CHANGE, "(): mode: 0%o uid: %d gid: %d\n", - (int)inode->i_mode, (int)inode->i_uid, (int)inode->i_gid); - /* Inode is not on hash chains, thus must save permissions here rather - than in a write_inode() method */ - de->mode = inode->i_mode; - de->inode.uid = inode->i_uid; - de->inode.gid = inode->i_gid; - de->inode.atime = inode->i_atime; - de->inode.mtime = inode->i_mtime; - de->inode.ctime = inode->i_ctime; - if ((iattr->ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID)) && - !is_devfsd_or_child(fs_info)) - devfsd_notify_de(de, DEVFSD_NOTIFY_CHANGE, inode->i_mode, - inode->i_uid, inode->i_gid, fs_info); - return 0; -} /* End Function devfs_notify_change */ - -static struct super_operations devfs_sops = { - .drop_inode = generic_delete_inode, - .statfs = simple_statfs, -}; - -/** - * _devfs_get_vfs_inode - Get a VFS inode. - * @sb: The super block. - * @de: The devfs inode. - * @dentry: The dentry to register with the devfs inode. - * - * Returns the inode on success, else %NULL. An implicit devfs_get() is - * performed if the inode is created. - */ - -static struct inode *_devfs_get_vfs_inode(struct super_block *sb, - struct devfs_entry *de, - struct dentry *dentry) -{ - struct inode *inode; - - if (de->prev == de) - return NULL; /* Quick check to see if unhooked */ - if ((inode = new_inode(sb)) == NULL) { - PRINTK("(%s): new_inode() failed, de: %p\n", de->name, de); - return NULL; - } - if (de->parent) { - read_lock(&de->parent->u.dir.lock); - if (de->prev != de) - de->inode.dentry = dentry; /* Not unhooked */ - read_unlock(&de->parent->u.dir.lock); - } else - de->inode.dentry = dentry; /* Root: no locking needed */ - if (de->inode.dentry != dentry) { /* Must have been unhooked */ - iput(inode); - return NULL; - } - /* FIXME where is devfs_put? */ - inode->u.generic_ip = devfs_get(de); - inode->i_ino = de->inode.ino; - DPRINTK(DEBUG_I_GET, "(%d): VFS inode: %p devfs_entry: %p\n", - (int)inode->i_ino, inode, de); - inode->i_blocks = 0; - inode->i_blksize = FAKE_BLOCK_SIZE; - inode->i_op = &devfs_iops; - inode->i_mode = de->mode; - if (S_ISDIR(de->mode)) { - inode->i_op = &devfs_dir_iops; - inode->i_fop = &devfs_dir_fops; - } else if (S_ISLNK(de->mode)) { - inode->i_op = &devfs_symlink_iops; - inode->i_size = de->u.symlink.length; - } else if (S_ISCHR(de->mode) || S_ISBLK(de->mode)) { - init_special_inode(inode, de->mode, de->u.dev); - } else if (S_ISFIFO(de->mode) || S_ISSOCK(de->mode)) { - init_special_inode(inode, de->mode, 0); - } else { - PRINTK("(%s): unknown mode %o de: %p\n", - de->name, de->mode, de); - iput(inode); - devfs_put(de); - return NULL; - } - - inode->i_uid = de->inode.uid; - inode->i_gid = de->inode.gid; - inode->i_atime = de->inode.atime; - inode->i_mtime = de->inode.mtime; - inode->i_ctime = de->inode.ctime; - DPRINTK(DEBUG_I_GET, "(): mode: 0%o uid: %d gid: %d\n", - (int)inode->i_mode, (int)inode->i_uid, (int)inode->i_gid); - return inode; -} /* End Function _devfs_get_vfs_inode */ - -/* File operations for device entries follow */ - -static int devfs_readdir(struct file *file, void *dirent, filldir_t filldir) -{ - int err, count; - int stored = 0; - struct fs_info *fs_info; - struct devfs_entry *parent, *de, *next = NULL; - struct inode *inode = file->f_dentry->d_inode; - - fs_info = inode->i_sb->s_fs_info; - parent = get_devfs_entry_from_vfs_inode(file->f_dentry->d_inode); - if ((long)file->f_pos < 0) - return -EINVAL; - DPRINTK(DEBUG_F_READDIR, "(%s): fs_info: %p pos: %ld\n", - parent->name, fs_info, (long)file->f_pos); - switch ((long)file->f_pos) { - case 0: - err = (*filldir) (dirent, "..", 2, file->f_pos, - parent_ino(file->f_dentry), DT_DIR); - if (err == -EINVAL) - break; - if (err < 0) - return err; - file->f_pos++; - ++stored; - /* Fall through */ - case 1: - err = - (*filldir) (dirent, ".", 1, file->f_pos, inode->i_ino, - DT_DIR); - if (err == -EINVAL) - break; - if (err < 0) - return err; - file->f_pos++; - ++stored; - /* Fall through */ - default: - /* Skip entries */ - count = file->f_pos - 2; - read_lock(&parent->u.dir.lock); - for (de = parent->u.dir.first; de && (count > 0); de = de->next) - --count; - devfs_get(de); - read_unlock(&parent->u.dir.lock); - /* Now add all remaining entries */ - while (de) { - err = (*filldir) (dirent, de->name, de->namelen, - file->f_pos, de->inode.ino, - de->mode >> 12); - if (err < 0) - devfs_put(de); - else { - file->f_pos++; - ++stored; - } - if (err == -EINVAL) - break; - if (err < 0) - return err; - read_lock(&parent->u.dir.lock); - next = devfs_get(de->next); - read_unlock(&parent->u.dir.lock); - devfs_put(de); - de = next; - } - break; - } - return stored; -} /* End Function devfs_readdir */ - -/* Open devfs specific special files */ -static int devfs_open(struct inode *inode, struct file *file) -{ - int err; - int minor = MINOR(inode->i_rdev); - struct file_operations *old_fops, *new_fops; - - switch (minor) { - case 0: /* /dev/.devfsd */ - new_fops = fops_get(&devfsd_fops); - break; -#ifdef CONFIG_DEVFS_DEBUG - case 1: /* /dev/.stat */ - new_fops = fops_get(&stat_fops); - break; -#endif - default: - return -ENODEV; - } - - if (new_fops == NULL) - return -ENODEV; - old_fops = file->f_op; - file->f_op = new_fops; - err = new_fops->open ? new_fops->open(inode, file) : 0; - if (err) { - file->f_op = old_fops; - fops_put(new_fops); - } else - fops_put(old_fops); - return err; -} /* End Function devfs_open */ - -static const struct file_operations devfs_fops = { - .open = devfs_open, -}; - -static const struct file_operations devfs_dir_fops = { - .read = generic_read_dir, - .readdir = devfs_readdir, -}; - -/* Dentry operations for device entries follow */ - -/** - * devfs_d_release - Callback for when a dentry is freed. - * @dentry: The dentry. - */ - -static void devfs_d_release(struct dentry *dentry) -{ - DPRINTK(DEBUG_D_RELEASE, "(%p): inode: %p\n", dentry, dentry->d_inode); -} /* End Function devfs_d_release */ - -/** - * devfs_d_iput - Callback for when a dentry loses its inode. - * @dentry: The dentry. - * @inode: The inode. - */ - -static void devfs_d_iput(struct dentry *dentry, struct inode *inode) -{ - struct devfs_entry *de; - - de = get_devfs_entry_from_vfs_inode(inode); - DPRINTK(DEBUG_D_IPUT, - "(%s): dentry: %p inode: %p de: %p de->dentry: %p\n", de->name, - dentry, inode, de, de->inode.dentry); - if (de->inode.dentry && (de->inode.dentry != dentry)) - OOPS("(%s): de: %p dentry: %p de->dentry: %p\n", - de->name, de, dentry, de->inode.dentry); - de->inode.dentry = NULL; - iput(inode); - devfs_put(de); -} /* End Function devfs_d_iput */ - -static int devfs_d_delete(struct dentry *dentry); - -static struct dentry_operations devfs_dops = { - .d_delete = devfs_d_delete, - .d_release = devfs_d_release, - .d_iput = devfs_d_iput, -}; - -static int devfs_d_revalidate_wait(struct dentry *dentry, struct nameidata *); - -static struct dentry_operations devfs_wait_dops = { - .d_delete = devfs_d_delete, - .d_release = devfs_d_release, - .d_iput = devfs_d_iput, - .d_revalidate = devfs_d_revalidate_wait, -}; - -/** - * devfs_d_delete - Callback for when all files for a dentry are closed. - * @dentry: The dentry. - */ - -static int devfs_d_delete(struct dentry *dentry) -{ - struct inode *inode = dentry->d_inode; - - if (dentry->d_op == &devfs_wait_dops) - dentry->d_op = &devfs_dops; - /* Unhash dentry if negative (has no inode) */ - if (inode == NULL) { - DPRINTK(DEBUG_D_DELETE, "(%p): dropping negative dentry\n", - dentry); - return 1; - } - return 0; -} /* End Function devfs_d_delete */ - -struct devfs_lookup_struct { - devfs_handle_t de; - wait_queue_head_t wait_queue; -}; - -/* XXX: this doesn't handle the case where we got a negative dentry - but a devfs entry has been registered in the meanwhile */ -static int devfs_d_revalidate_wait(struct dentry *dentry, struct nameidata *nd) -{ - struct inode *dir = dentry->d_parent->d_inode; - struct fs_info *fs_info = dir->i_sb->s_fs_info; - devfs_handle_t parent = get_devfs_entry_from_vfs_inode(dir); - struct devfs_lookup_struct *lookup_info = dentry->d_fsdata; - DECLARE_WAITQUEUE(wait, current); - int need_lock; - - /* - * FIXME HACK - * - * make sure that - * d_instantiate always runs under lock - * we release i_mutex lock before going to sleep - * - * unfortunately sometimes d_revalidate is called with - * and sometimes without i_mutex lock held. The following checks - * attempt to deduce when we need to add (and drop resp.) lock - * here. This relies on current (2.6.2) calling coventions: - * - * lookup_hash is always run under i_mutex and is passing NULL - * as nd - * - * open(...,O_CREATE,...) calls _lookup_hash under i_mutex - * and sets flags to LOOKUP_OPEN|LOOKUP_CREATE - * - * all other invocations of ->d_revalidate seem to happen - * outside of i_mutex - */ - need_lock = nd && - (!(nd->flags & LOOKUP_CREATE) || (nd->flags & LOOKUP_PARENT)); - - if (need_lock) - mutex_lock(&dir->i_mutex); - - if (is_devfsd_or_child(fs_info)) { - devfs_handle_t de = lookup_info->de; - struct inode *inode; - - DPRINTK(DEBUG_I_LOOKUP, - "(%s): dentry: %p inode: %p de: %p by: \"%s\"\n", - dentry->d_name.name, dentry, dentry->d_inode, de, - current->comm); - if (dentry->d_inode) - goto out; - if (de == NULL) { - read_lock(&parent->u.dir.lock); - de = _devfs_search_dir(parent, dentry->d_name.name, - dentry->d_name.len); - read_unlock(&parent->u.dir.lock); - if (de == NULL) - goto out; - lookup_info->de = de; - } - /* Create an inode, now that the driver information is available */ - inode = _devfs_get_vfs_inode(dir->i_sb, de, dentry); - if (!inode) - goto out; - DPRINTK(DEBUG_I_LOOKUP, - "(%s): new VFS inode(%u): %p de: %p by: \"%s\"\n", - de->name, de->inode.ino, inode, de, current->comm); - d_instantiate(dentry, inode); - goto out; - } - if (lookup_info == NULL) - goto out; /* Early termination */ - read_lock(&parent->u.dir.lock); - if (dentry->d_fsdata) { - set_current_state(TASK_UNINTERRUPTIBLE); - add_wait_queue(&lookup_info->wait_queue, &wait); - read_unlock(&parent->u.dir.lock); - /* at this point it is always (hopefully) locked */ - mutex_unlock(&dir->i_mutex); - schedule(); - mutex_lock(&dir->i_mutex); - /* - * This does not need nor should remove wait from wait_queue. - * Wait queue head is never reused - nothing is ever added to it - * after all waiters have been waked up and head itself disappears - * very soon after it. Moreover it is local variable on stack that - * is likely to have already disappeared so any reference to it - * at this point is buggy. - */ - - } else - read_unlock(&parent->u.dir.lock); - - out: - if (need_lock) - mutex_unlock(&dir->i_mutex); - return 1; -} /* End Function devfs_d_revalidate_wait */ - -/* Inode operations for device entries follow */ - -static struct dentry *devfs_lookup(struct inode *dir, struct dentry *dentry, - struct nameidata *nd) -{ - struct devfs_entry tmp; /* Must stay in scope until devfsd idle again */ - struct devfs_lookup_struct lookup_info; - struct fs_info *fs_info = dir->i_sb->s_fs_info; - struct devfs_entry *parent, *de; - struct inode *inode; - struct dentry *retval = NULL; - - /* Set up the dentry operations before anything else, to ensure cleaning - up on any error */ - dentry->d_op = &devfs_dops; - /* First try to get the devfs entry for this directory */ - parent = get_devfs_entry_from_vfs_inode(dir); - DPRINTK(DEBUG_I_LOOKUP, "(%s): dentry: %p parent: %p by: \"%s\"\n", - dentry->d_name.name, dentry, parent, current->comm); - if (parent == NULL) - return ERR_PTR(-ENOENT); - read_lock(&parent->u.dir.lock); - de = _devfs_search_dir(parent, dentry->d_name.name, dentry->d_name.len); - read_unlock(&parent->u.dir.lock); - lookup_info.de = de; - init_waitqueue_head(&lookup_info.wait_queue); - dentry->d_fsdata = &lookup_info; - if (de == NULL) { /* Try with devfsd. For any kind of failure, leave a negative dentry - so someone else can deal with it (in the case where the sysadmin - does a mknod()). It's important to do this before hashing the - dentry, so that the devfsd queue is filled before revalidates - can start */ - if (try_modload(parent, fs_info, dentry->d_name.name, dentry->d_name.len, &tmp) < 0) { /* Lookup event was not queued to devfsd */ - d_add(dentry, NULL); - return NULL; - } - } - dentry->d_op = &devfs_wait_dops; - d_add(dentry, NULL); /* Open the floodgates */ - /* Unlock directory semaphore, which will release any waiters. They - will get the hashed dentry, and may be forced to wait for - revalidation */ - mutex_unlock(&dir->i_mutex); - wait_for_devfsd_finished(fs_info); /* If I'm not devfsd, must wait */ - mutex_lock(&dir->i_mutex); /* Grab it again because them's the rules */ - de = lookup_info.de; - /* If someone else has been so kind as to make the inode, we go home - early */ - if (dentry->d_inode) - goto out; - if (de == NULL) { - read_lock(&parent->u.dir.lock); - de = _devfs_search_dir(parent, dentry->d_name.name, - dentry->d_name.len); - read_unlock(&parent->u.dir.lock); - if (de == NULL) - goto out; - /* OK, there's an entry now, but no VFS inode yet */ - } - /* Create an inode, now that the driver information is available */ - inode = _devfs_get_vfs_inode(dir->i_sb, de, dentry); - if (!inode) { - retval = ERR_PTR(-ENOMEM); - goto out; - } - DPRINTK(DEBUG_I_LOOKUP, - "(%s): new VFS inode(%u): %p de: %p by: \"%s\"\n", de->name, - de->inode.ino, inode, de, current->comm); - d_instantiate(dentry, inode); - out: - write_lock(&parent->u.dir.lock); - dentry->d_op = &devfs_dops; - dentry->d_fsdata = NULL; - wake_up(&lookup_info.wait_queue); - write_unlock(&parent->u.dir.lock); - devfs_put(de); - return retval; -} /* End Function devfs_lookup */ - -static int devfs_unlink(struct inode *dir, struct dentry *dentry) -{ - int unhooked; - struct devfs_entry *de; - struct inode *inode = dentry->d_inode; - struct fs_info *fs_info = dir->i_sb->s_fs_info; - - de = get_devfs_entry_from_vfs_inode(inode); - DPRINTK(DEBUG_I_UNLINK, "(%s): de: %p\n", dentry->d_name.name, de); - if (de == NULL) - return -ENOENT; - if (!de->vfs) - return -EPERM; - write_lock(&de->parent->u.dir.lock); - unhooked = _devfs_unhook(de); - write_unlock(&de->parent->u.dir.lock); - if (!unhooked) - return -ENOENT; - if (!is_devfsd_or_child(fs_info)) - devfsd_notify_de(de, DEVFSD_NOTIFY_DELETE, inode->i_mode, - inode->i_uid, inode->i_gid, fs_info); - free_dentry(de); - devfs_put(de); - return 0; -} /* End Function devfs_unlink */ - -static int devfs_symlink(struct inode *dir, struct dentry *dentry, - const char *symname) -{ - int err; - struct fs_info *fs_info = dir->i_sb->s_fs_info; - struct devfs_entry *parent, *de; - struct inode *inode; - - /* First try to get the devfs entry for this directory */ - parent = get_devfs_entry_from_vfs_inode(dir); - if (parent == NULL) - return -ENOENT; - err = devfs_do_symlink(parent, dentry->d_name.name, symname, &de); - DPRINTK(DEBUG_DISABLED, "(%s): errcode from <devfs_do_symlink>: %d\n", - dentry->d_name.name, err); - if (err < 0) - return err; - de->vfs = TRUE; - de->inode.uid = current->euid; - de->inode.gid = current->egid; - de->inode.atime = CURRENT_TIME; - de->inode.mtime = CURRENT_TIME; - de->inode.ctime = CURRENT_TIME; - if ((inode = _devfs_get_vfs_inode(dir->i_sb, de, dentry)) == NULL) - return -ENOMEM; - DPRINTK(DEBUG_DISABLED, "(%s): new VFS inode(%u): %p dentry: %p\n", - dentry->d_name.name, de->inode.ino, inode, dentry); - d_instantiate(dentry, inode); - if (!is_devfsd_or_child(fs_info)) - devfsd_notify_de(de, DEVFSD_NOTIFY_CREATE, inode->i_mode, - inode->i_uid, inode->i_gid, fs_info); - return 0; -} /* End Function devfs_symlink */ - -static int devfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) -{ - int err; - struct fs_info *fs_info = dir->i_sb->s_fs_info; - struct devfs_entry *parent, *de; - struct inode *inode; - - mode = (mode & ~S_IFMT) | S_IFDIR; /* VFS doesn't pass S_IFMT part */ - parent = get_devfs_entry_from_vfs_inode(dir); - if (parent == NULL) - return -ENOENT; - de = _devfs_alloc_entry(dentry->d_name.name, dentry->d_name.len, mode); - if (!de) - return -ENOMEM; - de->vfs = TRUE; - if ((err = _devfs_append_entry(parent, de, NULL)) != 0) - return err; - de->inode.uid = current->euid; - de->inode.gid = current->egid; - de->inode.atime = CURRENT_TIME; - de->inode.mtime = CURRENT_TIME; - de->inode.ctime = CURRENT_TIME; - if ((inode = _devfs_get_vfs_inode(dir->i_sb, de, dentry)) == NULL) - return -ENOMEM; - DPRINTK(DEBUG_DISABLED, "(%s): new VFS inode(%u): %p dentry: %p\n", - dentry->d_name.name, de->inode.ino, inode, dentry); - d_instantiate(dentry, inode); - if (!is_devfsd_or_child(fs_info)) - devfsd_notify_de(de, DEVFSD_NOTIFY_CREATE, inode->i_mode, - inode->i_uid, inode->i_gid, fs_info); - return 0; -} /* End Function devfs_mkdir */ - -static int devfs_rmdir(struct inode *dir, struct dentry *dentry) -{ - int err = 0; - struct devfs_entry *de; - struct fs_info *fs_info = dir->i_sb->s_fs_info; - struct inode *inode = dentry->d_inode; - - if (dir->i_sb->s_fs_info != inode->i_sb->s_fs_info) - return -EINVAL; - de = get_devfs_entry_from_vfs_inode(inode); - if (de == NULL) - return -ENOENT; - if (!S_ISDIR(de->mode)) - return -ENOTDIR; - if (!de->vfs) - return -EPERM; - /* First ensure the directory is empty and will stay that way */ - write_lock(&de->u.dir.lock); - if (de->u.dir.first) - err = -ENOTEMPTY; - else - de->u.dir.no_more_additions = TRUE; - write_unlock(&de->u.dir.lock); - if (err) - return err; - /* Now unhook the directory from its parent */ - write_lock(&de->parent->u.dir.lock); - if (!_devfs_unhook(de)) - err = -ENOENT; - write_unlock(&de->parent->u.dir.lock); - if (err) - return err; - if (!is_devfsd_or_child(fs_info)) - devfsd_notify_de(de, DEVFSD_NOTIFY_DELETE, inode->i_mode, - inode->i_uid, inode->i_gid, fs_info); - free_dentry(de); - devfs_put(de); - return 0; -} /* End Function devfs_rmdir */ - -static int devfs_mknod(struct inode *dir, struct dentry *dentry, int mode, - dev_t rdev) -{ - int err; - struct fs_info *fs_info = dir->i_sb->s_fs_info; - struct devfs_entry *parent, *de; - struct inode *inode; - - DPRINTK(DEBUG_I_MKNOD, "(%s): mode: 0%o dev: %u:%u\n", - dentry->d_name.name, mode, MAJOR(rdev), MINOR(rdev)); - parent = get_devfs_entry_from_vfs_inode(dir); - if (parent == NULL) - return -ENOENT; - de = _devfs_alloc_entry(dentry->d_name.name, dentry->d_name.len, mode); - if (!de) - return -ENOMEM; - de->vfs = TRUE; - if (S_ISCHR(mode) || S_ISBLK(mode)) - de->u.dev = rdev; - if ((err = _devfs_append_entry(parent, de, NULL)) != 0) - return err; - de->inode.uid = current->euid; - de->inode.gid = current->egid; - de->inode.atime = CURRENT_TIME; - de->inode.mtime = CURRENT_TIME; - de->inode.ctime = CURRENT_TIME; - if ((inode = _devfs_get_vfs_inode(dir->i_sb, de, dentry)) == NULL) - return -ENOMEM; - DPRINTK(DEBUG_I_MKNOD, ": new VFS inode(%u): %p dentry: %p\n", - de->inode.ino, inode, dentry); - d_instantiate(dentry, inode); - if (!is_devfsd_or_child(fs_info)) - devfsd_notify_de(de, DEVFSD_NOTIFY_CREATE, inode->i_mode, - inode->i_uid, inode->i_gid, fs_info); - return 0; -} /* End Function devfs_mknod */ - -static void *devfs_follow_link(struct dentry *dentry, struct nameidata *nd) -{ - struct devfs_entry *p = get_devfs_entry_from_vfs_inode(dentry->d_inode); - nd_set_link(nd, p ? p->u.symlink.linkname : ERR_PTR(-ENODEV)); - return NULL; -} /* End Function devfs_follow_link */ - -static struct inode_operations devfs_iops = { - .setattr = devfs_notify_change, -}; - -static struct inode_operations devfs_dir_iops = { - .lookup = devfs_lookup, - .unlink = devfs_unlink, - .symlink = devfs_symlink, - .mkdir = devfs_mkdir, - .rmdir = devfs_rmdir, - .mknod = devfs_mknod, - .setattr = devfs_notify_change, -}; - -static struct inode_operations devfs_symlink_iops = { - .readlink = generic_readlink, - .follow_link = devfs_follow_link, - .setattr = devfs_notify_change, -}; - -static int devfs_fill_super(struct super_block *sb, void *data, int silent) -{ - struct inode *root_inode = NULL; - - if (_devfs_get_root_entry() == NULL) - goto out_no_root; - atomic_set(&fs_info.devfsd_overrun_count, 0); - init_waitqueue_head(&fs_info.devfsd_wait_queue); - init_waitqueue_head(&fs_info.revalidate_wait_queue); - fs_info.sb = sb; - sb->s_fs_info = &fs_info; - sb->s_blocksize = 1024; - sb->s_blocksize_bits = 10; - sb->s_magic = DEVFS_SUPER_MAGIC; - sb->s_op = &devfs_sops; - sb->s_time_gran = 1; - if ((root_inode = _devfs_get_vfs_inode(sb, root_entry, NULL)) == NULL) - goto out_no_root; - sb->s_root = d_alloc_root(root_inode); - if (!sb->s_root) - goto out_no_root; - DPRINTK(DEBUG_S_READ, "(): made devfs ptr: %p\n", sb->s_fs_info); - return 0; - - out_no_root: - PRINTK("(): get root inode failed\n"); - if (root_inode) - iput(root_inode); - return -EINVAL; -} /* End Function devfs_fill_super */ - -static int devfs_get_sb(struct file_system_type *fs_type, - int flags, const char *dev_name, - void *data, struct vfsmount *mnt) -{ - return get_sb_single(fs_type, flags, data, devfs_fill_super, mnt); -} - -static struct file_system_type devfs_fs_type = { - .name = DEVFS_NAME, - .get_sb = devfs_get_sb, - .kill_sb = kill_anon_super, -}; - -/* File operations for devfsd follow */ - -static ssize_t devfsd_read(struct file *file, char __user *buf, size_t len, - loff_t * ppos) -{ - int done = FALSE; - int ival; - loff_t pos, devname_offset, tlen, rpos; - devfs_handle_t de; - struct devfsd_buf_entry *entry; - struct fs_info *fs_info = file->f_dentry->d_inode->i_sb->s_fs_info; - struct devfsd_notify_struct *info = fs_info->devfsd_info; - DECLARE_WAITQUEUE(wait, current); - - /* Verify the task has grabbed the queue */ - if (fs_info->devfsd_task != current) - return -EPERM; - info->major = 0; - info->minor = 0; - /* Block for a new entry */ - set_current_state(TASK_INTERRUPTIBLE); - add_wait_queue(&fs_info->devfsd_wait_queue, &wait); - while (devfsd_queue_empty(fs_info)) { - fs_info->devfsd_sleeping = TRUE; - wake_up(&fs_info->revalidate_wait_queue); - schedule(); - fs_info->devfsd_sleeping = FALSE; - if (signal_pending(current)) { - remove_wait_queue(&fs_info->devfsd_wait_queue, &wait); - __set_current_state(TASK_RUNNING); - return -EINTR; - } - set_current_state(TASK_INTERRUPTIBLE); - } - remove_wait_queue(&fs_info->devfsd_wait_queue, &wait); - __set_current_state(TASK_RUNNING); - /* Now play with the data */ - ival = atomic_read(&fs_info->devfsd_overrun_count); - info->overrun_count = ival; - entry = fs_info->devfsd_first_event; - info->type = entry->type; - info->mode = entry->mode; - info->uid = entry->uid; - info->gid = entry->gid; - de = entry->de; - if (S_ISCHR(de->mode) || S_ISBLK(de->mode)) { - info->major = MAJOR(de->u.dev); - info->minor = MINOR(de->u.dev); - } - pos = devfs_generate_path(de, info->devname, DEVFS_PATHLEN); - if (pos < 0) - return pos; - info->namelen = DEVFS_PATHLEN - pos - 1; - if (info->mode == 0) - info->mode = de->mode; - devname_offset = info->devname - (char *)info; - rpos = *ppos; - if (rpos < devname_offset) { - /* Copy parts of the header */ - tlen = devname_offset - rpos; - if (tlen > len) - tlen = len; - if (copy_to_user(buf, (char *)info + rpos, tlen)) { - return -EFAULT; - } - rpos += tlen; - buf += tlen; - len -= tlen; - } - if ((rpos >= devname_offset) && (len > 0)) { - /* Copy the name */ - tlen = info->namelen + 1; - if (tlen > len) - tlen = len; - else - done = TRUE; - if (copy_to_user - (buf, info->devname + pos + rpos - devname_offset, tlen)) { - return -EFAULT; - } - rpos += tlen; - } - tlen = rpos - *ppos; - if (done) { - devfs_handle_t parent; - - spin_lock(&fs_info->devfsd_buffer_lock); - fs_info->devfsd_first_event = entry->next; - if (entry->next == NULL) - fs_info->devfsd_last_event = NULL; - spin_unlock(&fs_info->devfsd_buffer_lock); - for (; de != NULL; de = parent) { - parent = de->parent; - devfs_put(de); - } - kmem_cache_free(devfsd_buf_cache, entry); - if (ival > 0) - atomic_sub(ival, &fs_info->devfsd_overrun_count); - *ppos = 0; - } else - *ppos = rpos; - return tlen; -} /* End Function devfsd_read */ - -static int devfsd_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg) -{ - int ival; - struct fs_info *fs_info = inode->i_sb->s_fs_info; - - switch (cmd) { - case DEVFSDIOC_GET_PROTO_REV: - ival = DEVFSD_PROTOCOL_REVISION_KERNEL; - if (copy_to_user((void __user *)arg, &ival, sizeof ival)) - return -EFAULT; - break; - case DEVFSDIOC_SET_EVENT_MASK: - /* Ensure only one reader has access to the queue. This scheme will - work even if the global kernel lock were to be removed, because it - doesn't matter who gets in first, as long as only one gets it */ - if (fs_info->devfsd_task == NULL) { - static DEFINE_SPINLOCK(lock); - - if (!spin_trylock(&lock)) - return -EBUSY; - if (fs_info->devfsd_task != NULL) { /* We lost the race... */ - spin_unlock(&lock); - return -EBUSY; - } - fs_info->devfsd_task = current; - spin_unlock(&lock); - fs_info->devfsd_pgrp = - (process_group(current) == - current->pid) ? process_group(current) : 0; - fs_info->devfsd_file = file; - fs_info->devfsd_info = - kmalloc(sizeof *fs_info->devfsd_info, GFP_KERNEL); - if (!fs_info->devfsd_info) { - devfsd_close(inode, file); - return -ENOMEM; - } - } else if (fs_info->devfsd_task != current) - return -EBUSY; - fs_info->devfsd_event_mask = arg; /* Let the masses come forth */ - break; - case DEVFSDIOC_RELEASE_EVENT_QUEUE: - if (fs_info->devfsd_file != file) - return -EPERM; - return devfsd_close(inode, file); - /*break; */ -#ifdef CONFIG_DEVFS_DEBUG - case DEVFSDIOC_SET_DEBUG_MASK: - if (copy_from_user(&ival, (void __user *)arg, sizeof ival)) - return -EFAULT; - devfs_debug = ival; - break; -#endif - default: - return -ENOIOCTLCMD; - } - return 0; -} /* End Function devfsd_ioctl */ - -static int devfsd_close(struct inode *inode, struct file *file) -{ - struct devfsd_buf_entry *entry, *next; - struct fs_info *fs_info = inode->i_sb->s_fs_info; - - if (fs_info->devfsd_file != file) - return 0; - fs_info->devfsd_event_mask = 0; - fs_info->devfsd_file = NULL; - spin_lock(&fs_info->devfsd_buffer_lock); - entry = fs_info->devfsd_first_event; - fs_info->devfsd_first_event = NULL; - fs_info->devfsd_last_event = NULL; - kfree(fs_info->devfsd_info); - fs_info->devfsd_info = NULL; - spin_unlock(&fs_info->devfsd_buffer_lock); - fs_info->devfsd_pgrp = 0; - fs_info->devfsd_task = NULL; - wake_up(&fs_info->revalidate_wait_queue); - for (; entry; entry = next) { - next = entry->next; - kmem_cache_free(devfsd_buf_cache, entry); - } - return 0; -} /* End Function devfsd_close */ - -#ifdef CONFIG_DEVFS_DEBUG -static ssize_t stat_read(struct file *file, char __user *buf, size_t len, - loff_t * ppos) -{ - ssize_t num; - char txt[80]; - - num = sprintf(txt, "Number of entries: %u number of bytes: %u\n", - stat_num_entries, stat_num_bytes) + 1; - if (*ppos >= num) - return 0; - if (*ppos + len > num) - len = num - *ppos; - if (copy_to_user(buf, txt + *ppos, len)) - return -EFAULT; - *ppos += len; - return len; -} /* End Function stat_read */ -#endif - -static int __init init_devfs_fs(void) -{ - int err; - int major; - struct devfs_entry *devfsd; -#ifdef CONFIG_DEVFS_DEBUG - struct devfs_entry *stat; -#endif - - if (_devfs_get_root_entry() == NULL) - return -ENOMEM; - - printk(KERN_INFO "%s: %s Richard Gooch (rgooch@atnf.csiro.au)\n", - DEVFS_NAME, DEVFS_VERSION); - devfsd_buf_cache = kmem_cache_create("devfsd_event", - sizeof(struct devfsd_buf_entry), - 0, 0, NULL, NULL); - if (!devfsd_buf_cache) - OOPS("(): unable to allocate event slab\n"); -#ifdef CONFIG_DEVFS_DEBUG - devfs_debug = devfs_debug_init; - printk(KERN_INFO "%s: devfs_debug: 0x%0x\n", DEVFS_NAME, devfs_debug); -#endif - printk(KERN_INFO "%s: boot_options: 0x%0x\n", DEVFS_NAME, boot_options); - - /* register special device for devfsd communication */ - major = register_chrdev(0, "devfs", &devfs_fops); - if (major < 0) - return major; - - /* And create the entry for ".devfsd" */ - devfsd = _devfs_alloc_entry(".devfsd", 0, S_IFCHR | S_IRUSR | S_IWUSR); - if (devfsd == NULL) - return -ENOMEM; - devfsd->u.dev = MKDEV(major, 0); - _devfs_append_entry(root_entry, devfsd, NULL); - -#ifdef CONFIG_DEVFS_DEBUG - stat = _devfs_alloc_entry(".stat", 0, S_IFCHR | S_IRUGO); - if (stat == NULL) - return -ENOMEM; - stat->u.dev = MKDEV(major, 1); - _devfs_append_entry(root_entry, stat, NULL); -#endif - - err = register_filesystem(&devfs_fs_type); - return err; -} /* End Function init_devfs_fs */ - -void __init mount_devfs_fs(void) -{ - int err; - - if (!(boot_options & OPTION_MOUNT)) - return; - err = do_mount("none", "/dev", "devfs", 0, NULL); - if (err == 0) - printk(KERN_INFO "Mounted devfs on /dev\n"); - else - PRINTK("(): unable to mount devfs, err: %d\n", err); -} /* End Function mount_devfs_fs */ - -module_init(init_devfs_fs) diff --git a/fs/devfs/util.c b/fs/devfs/util.c deleted file mode 100644 index db06d388c9a..00000000000 --- a/fs/devfs/util.c +++ /dev/null @@ -1,97 +0,0 @@ -/* devfs (Device FileSystem) utilities. - - Copyright (C) 1999-2002 Richard Gooch - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public - License as published by the Free Software Foundation; either - version 2 of the License, or (at your option) any later version. - - This library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with this library; if not, write to the Free - Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - - Richard Gooch may be reached by email at rgooch@atnf.csiro.au - The postal address is: - Richard Gooch, c/o ATNF, P. O. Box 76, Epping, N.S.W., 2121, Australia. - - ChangeLog - - 19991031 Richard Gooch <rgooch@atnf.csiro.au> - Created. - 19991103 Richard Gooch <rgooch@atnf.csiro.au> - Created <_devfs_convert_name> and supported SCSI and IDE CD-ROMs - 20000203 Richard Gooch <rgooch@atnf.csiro.au> - Changed operations pointer type to void *. - 20000621 Richard Gooch <rgooch@atnf.csiro.au> - Changed interface to <devfs_register_series>. - 20000622 Richard Gooch <rgooch@atnf.csiro.au> - Took account of interface change to <devfs_mk_symlink>. - Took account of interface change to <devfs_mk_dir>. - 20010519 Richard Gooch <rgooch@atnf.csiro.au> - Documentation cleanup. - 20010709 Richard Gooch <rgooch@atnf.csiro.au> - Created <devfs_*alloc_major> and <devfs_*alloc_devnum>. - 20010710 Richard Gooch <rgooch@atnf.csiro.au> - Created <devfs_*alloc_unique_number>. - 20010730 Richard Gooch <rgooch@atnf.csiro.au> - Documentation typo fix. - 20010806 Richard Gooch <rgooch@atnf.csiro.au> - Made <block_semaphore> and <char_semaphore> private. - 20010813 Richard Gooch <rgooch@atnf.csiro.au> - Fixed bug in <devfs_alloc_unique_number>: limited to 128 numbers - 20010818 Richard Gooch <rgooch@atnf.csiro.au> - Updated major masks up to Linus' "no new majors" proclamation. - Block: were 126 now 122 free, char: were 26 now 19 free. - 20020324 Richard Gooch <rgooch@atnf.csiro.au> - Fixed bug in <devfs_alloc_unique_number>: was clearing beyond - bitfield. - 20020326 Richard Gooch <rgooch@atnf.csiro.au> - Fixed bitfield data type for <devfs_*alloc_devnum>. - Made major bitfield type and initialiser 64 bit safe. - 20020413 Richard Gooch <rgooch@atnf.csiro.au> - Fixed shift warning on 64 bit machines. - 20020428 Richard Gooch <rgooch@atnf.csiro.au> - Copied and used macro for error messages from fs/devfs/base.c - 20021013 Richard Gooch <rgooch@atnf.csiro.au> - Documentation fix. - 20030101 Adam J. Richter <adam@yggdrasil.com> - Eliminate DEVFS_SPECIAL_{CHR,BLK}. Use mode_t instead. - 20030106 Christoph Hellwig <hch@infradead.org> - Rewrite devfs_{,de}alloc_devnum to look like C code. -*/ -#include <linux/module.h> -#include <linux/init.h> -#include <linux/devfs_fs_kernel.h> -#include <linux/slab.h> -#include <linux/vmalloc.h> -#include <linux/genhd.h> -#include <linux/bitops.h> - -int devfs_register_tape(const char *name) -{ - char tname[32], dest[64]; - static unsigned int tape_counter; - unsigned int n = tape_counter++; - - sprintf(dest, "../%s", name); - sprintf(tname, "tapes/tape%u", n); - devfs_mk_symlink(tname, dest); - - return n; -} - -EXPORT_SYMBOL(devfs_register_tape); - -void devfs_unregister_tape(int num) -{ - if (num >= 0) - devfs_remove("tapes/tape%u", num); -} - -EXPORT_SYMBOL(devfs_unregister_tape); diff --git a/fs/partitions/Makefile b/fs/partitions/Makefile index 42c7d3878ed..d713ce6b3e1 100644 --- a/fs/partitions/Makefile +++ b/fs/partitions/Makefile @@ -4,7 +4,6 @@ obj-y := check.o -obj-$(CONFIG_DEVFS_FS) += devfs.o obj-$(CONFIG_ACORN_PARTITION) += acorn.o obj-$(CONFIG_AMIGA_PARTITION) += amiga.o obj-$(CONFIG_ATARI_PARTITION) += atari.o diff --git a/fs/partitions/check.c b/fs/partitions/check.c index 2ef313a96b6..839634026eb 100644 --- a/fs/partitions/check.c +++ b/fs/partitions/check.c @@ -18,10 +18,8 @@ #include <linux/fs.h> #include <linux/kmod.h> #include <linux/ctype.h> -#include <linux/devfs_fs_kernel.h> #include "check.h" -#include "devfs.h" #include "acorn.h" #include "amiga.h" @@ -161,18 +159,11 @@ check_partition(struct gendisk *hd, struct block_device *bdev) if (!state) return NULL; -#ifdef CONFIG_DEVFS_FS - if (hd->devfs_name[0] != '\0') { - printk(KERN_INFO " /dev/%s:", hd->devfs_name); + disk_name(hd, 0, state->name); + printk(KERN_INFO " %s:", state->name); + if (isdigit(state->name[strlen(state->name)-1])) sprintf(state->name, "p"); - } -#endif - else { - disk_name(hd, 0, state->name); - printk(KERN_INFO " %s:", state->name); - if (isdigit(state->name[strlen(state->name)-1])) - sprintf(state->name, "p"); - } + state->limit = hd->minors; i = res = 0; while (!res && check_part[i]) { @@ -328,7 +319,6 @@ void delete_partition(struct gendisk *disk, int part) p->nr_sects = 0; p->ios[0] = p->ios[1] = 0; p->sectors[0] = p->sectors[1] = 0; - devfs_remove("%s/part%d", disk->devfs_name, part); sysfs_remove_link(&p->kobj, "subsystem"); if (p->holder_dir) kobject_unregister(p->holder_dir); @@ -350,10 +340,6 @@ void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len) p->nr_sects = len; p->partno = part; - devfs_mk_bdev(MKDEV(disk->major, disk->first_minor + part), - S_IFBLK|S_IRUSR|S_IWUSR, - "%s/part%d", disk->devfs_name, part); - if (isdigit(disk->kobj.name[strlen(disk->kobj.name)-1])) snprintf(p->kobj.name,KOBJ_NAME_LEN,"%sp%d",disk->kobj.name,part); else @@ -423,14 +409,8 @@ void register_disk(struct gendisk *disk) disk_sysfs_add_subdirs(disk); /* No minors to use for partitions */ - if (disk->minors == 1) { - if (disk->devfs_name[0] != '\0') - devfs_add_disk(disk); + if (disk->minors == 1) goto exit; - } - - /* always add handle for the whole disk */ - devfs_add_partitioned(disk); /* No such device (e.g., media were just removed) */ if (!get_capacity(disk)) @@ -538,8 +518,6 @@ void del_gendisk(struct gendisk *disk) disk_stat_set_all(disk, 0); disk->stamp = 0; - devfs_remove_disk(disk); - kobject_uevent(&disk->kobj, KOBJ_REMOVE); if (disk->holder_dir) kobject_unregister(disk->holder_dir); diff --git a/fs/partitions/devfs.c b/fs/partitions/devfs.c deleted file mode 100644 index 3f0a780c9ce..00000000000 --- a/fs/partitions/devfs.c +++ /dev/null @@ -1,130 +0,0 @@ -/* - * This tries to keep block devices away from devfs as much as possible. - */ -#include <linux/fs.h> -#include <linux/devfs_fs_kernel.h> -#include <linux/vmalloc.h> -#include <linux/genhd.h> -#include <linux/bitops.h> -#include <linux/mutex.h> - - -struct unique_numspace { - u32 num_free; /* Num free in bits */ - u32 length; /* Array length in bytes */ - unsigned long *bits; - struct semaphore mutex; -}; - -static DEFINE_MUTEX(numspace_mutex); - -static int expand_numspace(struct unique_numspace *s) -{ - u32 length; - void *bits; - - if (s->length < 16) - length = 16; - else - length = s->length << 1; - - bits = vmalloc(length); - if (!bits) - return -ENOMEM; - if (s->bits) { - memcpy(bits, s->bits, s->length); - vfree(s->bits); - } - - s->num_free = (length - s->length) << 3; - s->bits = bits; - memset(bits + s->length, 0, length - s->length); - s->length = length; - - return 0; -} - -static int alloc_unique_number(struct unique_numspace *s) -{ - int rval = 0; - - mutex_lock(&numspace_mutex); - if (s->num_free < 1) - rval = expand_numspace(s); - if (!rval) { - rval = find_first_zero_bit(s->bits, s->length << 3); - --s->num_free; - __set_bit(rval, s->bits); - } - mutex_unlock(&numspace_mutex); - - return rval; -} - -static void dealloc_unique_number(struct unique_numspace *s, int number) -{ - int old_val; - - if (number >= 0) { - mutex_lock(&numspace_mutex); - old_val = __test_and_clear_bit(number, s->bits); - if (old_val) - ++s->num_free; - mutex_unlock(&numspace_mutex); - } -} - -static struct unique_numspace disc_numspace; -static struct unique_numspace cdrom_numspace; - -void devfs_add_partitioned(struct gendisk *disk) -{ - char dirname[64], symlink[16]; - - devfs_mk_dir(disk->devfs_name); - devfs_mk_bdev(MKDEV(disk->major, disk->first_minor), - S_IFBLK|S_IRUSR|S_IWUSR, - "%s/disc", disk->devfs_name); - - disk->number = alloc_unique_number(&disc_numspace); - - sprintf(symlink, "discs/disc%d", disk->number); - sprintf(dirname, "../%s", disk->devfs_name); - devfs_mk_symlink(symlink, dirname); - -} - -void devfs_add_disk(struct gendisk *disk) -{ - devfs_mk_bdev(MKDEV(disk->major, disk->first_minor), - (disk->flags & GENHD_FL_CD) ? - S_IFBLK|S_IRUGO|S_IWUGO : - S_IFBLK|S_IRUSR|S_IWUSR, - "%s", disk->devfs_name); - - if (disk->flags & GENHD_FL_CD) { - char dirname[64], symlink[16]; - - disk->number = alloc_unique_number(&cdrom_numspace); - - sprintf(symlink, "cdroms/cdrom%d", disk->number); - sprintf(dirname, "../%s", disk->devfs_name); - devfs_mk_symlink(symlink, dirname); - } -} - -void devfs_remove_disk(struct gendisk *disk) -{ - if (disk->minors != 1) { - devfs_remove("discs/disc%d", disk->number); - dealloc_unique_number(&disc_numspace, disk->number); - devfs_remove("%s/disc", disk->devfs_name); - } - if (disk->flags & GENHD_FL_CD) { - devfs_remove("cdroms/cdrom%d", disk->number); - dealloc_unique_number(&cdrom_numspace, disk->number); - } - devfs_remove(disk->devfs_name); -} - - diff --git a/fs/partitions/devfs.h b/fs/partitions/devfs.h deleted file mode 100644 index 176118b4e49..00000000000 --- a/fs/partitions/devfs.h +++ /dev/null @@ -1,10 +0,0 @@ - -#ifdef CONFIG_DEVFS_FS -void devfs_add_disk(struct gendisk *dev); -void devfs_add_partitioned(struct gendisk *dev); -void devfs_remove_disk(struct gendisk *dev); -#else -# define devfs_add_disk(disk) do { } while (0) -# define devfs_add_partitioned(disk) do { } while (0) -# define devfs_remove_disk(disk) do { } while (0) -#endif diff --git a/include/asm-ppc/ocp.h b/include/asm-ppc/ocp.h index 3be5d760ffc..16dbc7d1745 100644 --- a/include/asm-ppc/ocp.h +++ b/include/asm-ppc/ocp.h @@ -26,7 +26,6 @@ #include <linux/init.h> #include <linux/list.h> -#include <linux/devfs_fs_kernel.h> #include <linux/device.h> #include <asm/mmu.h> diff --git a/include/linux/compat_ioctl.h b/include/linux/compat_ioctl.h index 917d62e4148..269d000bb2a 100644 --- a/include/linux/compat_ioctl.h +++ b/include/linux/compat_ioctl.h @@ -567,11 +567,6 @@ COMPATIBLE_IOCTL(AUTOFS_IOC_PROTOSUBVER) COMPATIBLE_IOCTL(AUTOFS_IOC_ASKREGHOST) COMPATIBLE_IOCTL(AUTOFS_IOC_TOGGLEREGHOST) COMPATIBLE_IOCTL(AUTOFS_IOC_ASKUMOUNT) -/* DEVFS */ -COMPATIBLE_IOCTL(DEVFSDIOC_GET_PROTO_REV) -COMPATIBLE_IOCTL(DEVFSDIOC_SET_EVENT_MASK) -COMPATIBLE_IOCTL(DEVFSDIOC_RELEASE_EVENT_QUEUE) -COMPATIBLE_IOCTL(DEVFSDIOC_SET_DEBUG_MASK) /* Raw devices */ COMPATIBLE_IOCTL(RAW_SETBIND) COMPATIBLE_IOCTL(RAW_GETBIND) diff --git a/include/linux/devfs_fs.h b/include/linux/devfs_fs.h deleted file mode 100644 index de236f43187..00000000000 --- a/include/linux/devfs_fs.h +++ /dev/null @@ -1,41 +0,0 @@ -#ifndef _LINUX_DEVFS_FS_H -#define _LINUX_DEVFS_FS_H - -#include <linux/ioctl.h> - -#define DEVFSD_PROTOCOL_REVISION_KERNEL 5 - -#define DEVFSD_IOCTL_BASE 'd' - -/* These are the various ioctls */ -#define DEVFSDIOC_GET_PROTO_REV _IOR(DEVFSD_IOCTL_BASE, 0, int) -#define DEVFSDIOC_SET_EVENT_MASK _IOW(DEVFSD_IOCTL_BASE, 2, int) -#define DEVFSDIOC_RELEASE_EVENT_QUEUE _IOW(DEVFSD_IOCTL_BASE, 3, int) -#define DEVFSDIOC_SET_DEBUG_MASK _IOW(DEVFSD_IOCTL_BASE, 4, int) - -#define DEVFSD_NOTIFY_REGISTERED 0 -#define DEVFSD_NOTIFY_UNREGISTERED 1 -#define DEVFSD_NOTIFY_ASYNC_OPEN 2 -#define DEVFSD_NOTIFY_CLOSE 3 -#define DEVFSD_NOTIFY_LOOKUP 4 -#define DEVFSD_NOTIFY_CHANGE 5 -#define DEVFSD_NOTIFY_CREATE 6 -#define DEVFSD_NOTIFY_DELETE 7 - -#define DEVFS_PATHLEN 1024 /* Never change this otherwise the - binary interface will change */ - -struct devfsd_notify_struct { /* Use native C types to ensure same types in kernel and user space */ - unsigned int type; /* DEVFSD_NOTIFY_* value */ - unsigned int mode; /* Mode of the inode or device entry */ - unsigned int major; /* Major number of device entry */ - unsigned int minor; /* Minor number of device entry */ - unsigned int uid; /* Uid of process, inode or device entry */ - unsigned int gid; /* Gid of process, inode or device entry */ - unsigned int overrun_count; /* Number of lost events */ - unsigned int namelen; /* Number of characters not including '\0' */ - /* The device name MUST come last */ - char devname[DEVFS_PATHLEN]; /* This will be '\0' terminated */ -}; - -#endif /* _LINUX_DEVFS_FS_H */ diff --git a/include/linux/devfs_fs_kernel.h b/include/linux/devfs_fs_kernel.h deleted file mode 100644 index 0d74a6f22ab..00000000000 --- a/include/linux/devfs_fs_kernel.h +++ /dev/null @@ -1,57 +0,0 @@ -#ifndef _LINUX_DEVFS_FS_KERNEL_H -#define _LINUX_DEVFS_FS_KERNEL_H - -#include <linux/fs.h> -#include <linux/spinlock.h> -#include <linux/types.h> - -#include <asm/semaphore.h> - -#define DEVFS_SUPER_MAGIC 0x1373 - -#ifdef CONFIG_DEVFS_FS -extern int devfs_mk_bdev(dev_t dev, umode_t mode, const char *fmt, ...) - __attribute__ ((format(printf, 3, 4))); -extern int devfs_mk_cdev(dev_t dev, umode_t mode, const char *fmt, ...) - __attribute__ ((format(printf, 3, 4))); -extern int devfs_mk_symlink(const char *name, const char *link); -extern int devfs_mk_dir(const char *fmt, ...) - __attribute__ ((format(printf, 1, 2))); -extern void devfs_remove(const char *fmt, ...) - __attribute__ ((format(printf, 1, 2))); -extern int devfs_register_tape(const char *name); -extern void devfs_unregister_tape(int num); -extern void mount_devfs_fs(void); -#else /* CONFIG_DEVFS_FS */ -static inline int devfs_mk_bdev(dev_t dev, umode_t mode, const char *fmt, ...) -{ - return 0; -} -static inline int devfs_mk_cdev(dev_t dev, umode_t mode, const char *fmt, ...) -{ - return 0; -} -static inline int devfs_mk_symlink(const char *name, const char *link) -{ - return 0; -} -static inline int devfs_mk_dir(const char *fmt, ...) -{ - return 0; -} -static inline void devfs_remove(const char *fmt, ...) -{ -} -static inline int devfs_register_tape(const char *name) -{ - return -1; -} -static inline void devfs_unregister_tape(int num) -{ -} -static inline void mount_devfs_fs(void) -{ - return; -} -#endif /* CONFIG_DEVFS_FS */ -#endif /* _LINUX_DEVFS_FS_KERNEL_H */ diff --git a/include/linux/fb.h b/include/linux/fb.h index 07a08e92bc7..b45928f5c63 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -380,7 +380,6 @@ struct fb_cursor { #include <linux/tty.h> #include <linux/device.h> #include <linux/workqueue.h> -#include <linux/devfs_fs_kernel.h> #include <linux/notifier.h> #include <linux/list.h> #include <asm/io.h> diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 3498a0c6818..e4af57e87c1 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -112,8 +112,6 @@ struct gendisk { sector_t capacity; int flags; - char devfs_name[64]; /* devfs crap */ - int number; /* more of the same */ struct device *driverfs_dev; struct kobject kobj; struct kobject *holder_dir; diff --git a/include/linux/ide.h b/include/linux/ide.h index 0c100168c0c..285316c836b 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -552,7 +552,6 @@ typedef struct ide_drive_s { struct hd_driveid *id; /* drive model identification info */ struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ struct ide_settings_s *settings;/* /proc/ide/ drive settings */ - char devfs_name[64]; /* devfs crap */ struct hwif_s *hwif; /* actually (ide_hwif_t *) */ diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h index 5b584dafb5a..b03cfb91e22 100644 --- a/include/linux/miscdevice.h +++ b/include/linux/miscdevice.h @@ -40,7 +40,6 @@ struct miscdevice { struct list_head list; struct device *dev; struct class_device *class; - char devfs_name[64]; }; extern int misc_register(struct miscdevice * misc); diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 951c4e85827..fc1104a2cfa 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -336,7 +336,6 @@ struct uart_driver { struct module *owner; const char *driver_name; const char *dev_name; - const char *devfs_name; int major; int minor; int nr; diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h index b368b296d03..58c961c9e17 100644 --- a/include/linux/tty_driver.h +++ b/include/linux/tty_driver.h @@ -157,7 +157,6 @@ struct tty_driver { struct cdev cdev; struct module *owner; const char *driver_name; - const char *devfs_name; const char *name; int name_base; /* offset of printed name */ int major; /* major device number */ @@ -242,8 +241,15 @@ void tty_set_operations(struct tty_driver *driver, struct tty_operations *op); * is also a promise, if the above case is true, not to signal * overruns, either.) * - * TTY_DRIVER_NO_DEVFS --- if set, do not create devfs entries. This - * is only used by tty_register_driver(). + * TTY_DRIVER_DYNAMIC_DEV --- if set, the individual tty devices need + * to be registered with a call to tty_register_driver() when the + * device is found in the system and unregistered with a call to + * tty_unregister_device() so the devices will be show up + * properly in sysfs. If not set, driver->num entries will be + * created by the tty core in sysfs when tty_register_driver() is + * called. This is to be used by drivers that have tty devices + * that can appear and disappear while the main tty driver is + * registered with the tty core. * * TTY_DRIVER_DEVPTS_MEM -- don't use the standard arrays, instead * use dynamic memory keyed through the devpts filesystem. This @@ -252,7 +258,7 @@ void tty_set_operations(struct tty_driver *driver, struct tty_operations *op); #define TTY_DRIVER_INSTALLED 0x0001 #define TTY_DRIVER_RESET_TERMIOS 0x0002 #define TTY_DRIVER_REAL_RAW 0x0004 -#define TTY_DRIVER_NO_DEVFS 0x0008 +#define TTY_DRIVER_DYNAMIC_DEV 0x0008 #define TTY_DRIVER_DEVPTS_MEM 0x0010 /* tty driver types */ diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h index a1b473190e6..62dae1a8c44 100644 --- a/include/media/v4l2-dev.h +++ b/include/media/v4l2-dev.h @@ -314,7 +314,6 @@ void *priv; /* for videodev.c intenal usage -- please don't touch */ int users; /* video_exclusive_{open|close} ... */ struct mutex lock; /* ... helper function uses these */ - char devfs_name[64]; /* devfs */ struct class_device class_dev; /* sysfs */ }; diff --git a/init/Makefile b/init/Makefile index a2300078f2b..633a268d270 100644 --- a/init/Makefile +++ b/init/Makefile @@ -6,7 +6,6 @@ obj-y := main.o version.o mounts.o initramfs.o obj-$(CONFIG_GENERIC_CALIBRATE_DELAY) += calibrate.o mounts-y := do_mounts.o -mounts-$(CONFIG_DEVFS_FS) += do_mounts_devfs.o mounts-$(CONFIG_BLK_DEV_RAM) += do_mounts_rd.o mounts-$(CONFIG_BLK_DEV_INITRD) += do_mounts_initrd.o mounts-$(CONFIG_BLK_DEV_MD) += do_mounts_md.o diff --git a/init/do_mounts.c b/init/do_mounts.c index 21b3b8f33a7..94aeec7aa91 100644 --- a/init/do_mounts.c +++ b/init/do_mounts.c @@ -325,7 +325,7 @@ static int __init mount_nfs_root(void) { void *data = nfs_root_data(); - create_dev("/dev/root", ROOT_DEV, NULL); + create_dev("/dev/root", ROOT_DEV); if (data && do_mount_root("/dev/root", "nfs", root_mountflags, data) == 0) return 1; @@ -386,7 +386,7 @@ void __init mount_root(void) change_floppy("root floppy"); } #endif - create_dev("/dev/root", ROOT_DEV, root_device_name); + create_dev("/dev/root", ROOT_DEV); mount_block_root("/dev/root", root_mountflags); } @@ -397,8 +397,6 @@ void __init prepare_namespace(void) { int is_floppy; - mount_devfs(); - if (root_delay) { printk(KERN_INFO "Waiting %dsec before mounting root device...\n", root_delay); @@ -428,10 +426,8 @@ void __init prepare_namespace(void) mount_root(); out: - umount_devfs("/dev"); sys_mount(".", "/", NULL, MS_MOVE, NULL); sys_chroot("."); security_sb_post_mountroot(); - mount_devfs_fs (); } diff --git a/init/do_mounts.h b/init/do_mounts.h index e0a7ac9649e..e7f2e7fa066 100644 --- a/init/do_mounts.h +++ b/init/do_mounts.h @@ -1,6 +1,5 @@ #include <linux/config.h> #include <linux/kernel.h> -#include <linux/devfs_fs_kernel.h> #include <linux/init.h> #include <linux/syscalls.h> #include <linux/unistd.h> @@ -15,25 +14,12 @@ void mount_root(void); extern int root_mountflags; extern char *root_device_name; -#ifdef CONFIG_DEVFS_FS - -void mount_devfs(void); -void umount_devfs(char *path); -int create_dev(char *name, dev_t dev, char *devfs_name); - -#else - -static inline void mount_devfs(void) {} -static inline void umount_devfs(const char *path) {} - -static inline int create_dev(char *name, dev_t dev, char *devfs_name) +static inline int create_dev(char *name, dev_t dev) { sys_unlink(name); return sys_mknod(name, S_IFBLK|0600, new_encode_dev(dev)); } -#endif - #if BITS_PER_LONG == 32 static inline u32 bstat(char *name) { diff --git a/init/do_mounts_devfs.c b/init/do_mounts_devfs.c deleted file mode 100644 index cc526474690..00000000000 --- a/init/do_mounts_devfs.c +++ /dev/null @@ -1,137 +0,0 @@ - -#include <linux/kernel.h> -#include <linux/dirent.h> -#include <linux/string.h> - -#include "do_mounts.h" - -void __init mount_devfs(void) -{ - sys_mount("devfs", "/dev", "devfs", 0, NULL); -} - -void __init umount_devfs(char *path) -{ - sys_umount(path, 0); -} - -/* - * If the dir will fit in *buf, return its length. If it won't fit, return - * zero. Return -ve on error. - */ -static int __init do_read_dir(int fd, void *buf, int len) -{ - long bytes, n; - char *p = buf; - sys_lseek(fd, 0, 0); - - for (bytes = 0; bytes < len; bytes += n) { - n = sys_getdents64(fd, (struct linux_dirent64 *)(p + bytes), - len - bytes); - if (n < 0) - return n; - if (n == 0) - return bytes; - } - return 0; -} - -/* - * Try to read all of a directory. Returns the contents at *p, which - * is kmalloced memory. Returns the number of bytes read at *len. Returns - * NULL on error. - */ -static void * __init read_dir(char *path, int *len) -{ - int size; - int fd = sys_open(path, 0, 0); - - *len = 0; - if (fd < 0) - return NULL; - - for (size = 1 << 9; size <= (PAGE_SIZE << MAX_ORDER); size <<= 1) { - void *p = kmalloc(size, GFP_KERNEL); - int n; - if (!p) - break; - n = do_read_dir(fd, p, size); - if (n > 0) { - sys_close(fd); - *len = n; - return p; - } - kfree(p); - if (n == -EINVAL) - continue; /* Try a larger buffer */ - if (n < 0) - break; - } - sys_close(fd); - return NULL; -} - -/* - * recursively scan <path>, looking for a device node of type <dev> - */ -static int __init find_in_devfs(char *path, unsigned dev) -{ - char *end = path + strlen(path); - int rest = path + 64 - end; - int size; - char *p = read_dir(path, &size); - char *s; - - if (!p) - return -1; - for (s = p; s < p + size; s += ((struct linux_dirent64 *)s)->d_reclen) { - struct linux_dirent64 *d = (struct linux_dirent64 *)s; - if (strlen(d->d_name) + 2 > rest) - continue; - switch (d->d_type) { - case DT_BLK: - sprintf(end, "/%s", d->d_name); - if (bstat(path) != dev) - break; - kfree(p); - return 0; - case DT_DIR: - if (strcmp(d->d_name, ".") == 0) - break; - if (strcmp(d->d_name, "..") == 0) - break; - sprintf(end, "/%s", d->d_name); - if (find_in_devfs(path, dev) < 0) - break; - kfree(p); - return 0; - } - } - kfree(p); - return -1; -} - -/* - * create a device node called <name> which points to - * <devfs_name> if possible, otherwise find a device node - * which matches <dev> and make <name> a symlink pointing to it. - */ -int __init create_dev(char *name, dev_t dev, char *devfs_name) -{ - char path[64]; - - sys_unlink(name); - if (devfs_name && devfs_name[0]) { - if (strncmp(devfs_name, "/dev/", 5) == 0) - devfs_name += 5; - sprintf(path, "/dev/%s", devfs_name); - if (sys_access(path, 0) == 0) - return sys_symlink(devfs_name, name); - } - if (!dev) - return -1; - strcpy(path, "/dev"); - if (find_in_devfs(path, new_encode_dev(dev)) < 0) - return -1; - return sys_symlink(path + 5, name); -} diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c index 405f9031af8..a06f037fa00 100644 --- a/init/do_mounts_initrd.c +++ b/init/do_mounts_initrd.c @@ -44,7 +44,7 @@ static void __init handle_initrd(void) int pid; real_root_dev = new_encode_dev(ROOT_DEV); - create_dev("/dev/root.old", Root_RAM0, NULL); + create_dev("/dev/root.old", Root_RAM0); /* mount initrd on rootfs' /root */ mount_block_root("/dev/root.old", root_mountflags & ~MS_RDONLY); sys_mkdir("/old", 0700); @@ -54,7 +54,6 @@ static void __init handle_initrd(void) sys_chdir("/root"); sys_mount(".", "/", NULL, MS_MOVE, NULL); sys_chroot("."); - mount_devfs_fs (); current->flags |= PF_NOFREEZE; pid = kernel_thread(do_linuxrc, "/linuxrc", SIGCHLD); @@ -71,7 +70,6 @@ static void __init handle_initrd(void) sys_chroot("."); sys_close(old_fd); sys_close(root_fd); - umount_devfs("/old/dev"); if (new_decode_dev(real_root_dev) == Root_RAM0) { sys_chdir("/old"); @@ -107,7 +105,7 @@ static void __init handle_initrd(void) int __init initrd_load(void) { if (mount_initrd) { - create_dev("/dev/ram", Root_RAM0, NULL); + create_dev("/dev/ram", Root_RAM0); /* * Load the initrd data into /dev/ram0. Execute it as initrd * unless /dev/ram0 is supposed to be our actual root device, diff --git a/init/do_mounts_md.c b/init/do_mounts_md.c index f6f36806f84..2429e1bf8c6 100644 --- a/init/do_mounts_md.c +++ b/init/do_mounts_md.c @@ -125,19 +125,18 @@ static void __init md_setup_drive(void) int err = 0; char *devname; mdu_disk_info_t dinfo; - char name[16], devfs_name[16]; + char name[16]; minor = md_setup_args[ent].minor; partitioned = md_setup_args[ent].partitioned; devname = md_setup_args[ent].device_names; sprintf(name, "/dev/md%s%d", partitioned?"_d":"", minor); - sprintf(devfs_name, "/dev/md/%s%d", partitioned?"d":"", minor); if (partitioned) dev = MKDEV(mdp_major, minor << MdpMinorShift); else dev = MKDEV(MD_MAJOR, minor); - create_dev(name, dev, devfs_name); + create_dev(name, dev); for (i = 0; i < MD_SB_DISKS && devname != 0; i++) { char *p; char comp_name[64]; @@ -272,7 +271,7 @@ __setup("md=", md_setup); void __init md_run_setup(void) { - create_dev("/dev/md0", MKDEV(MD_MAJOR, 0), "md/0"); + create_dev("/dev/md0", MKDEV(MD_MAJOR, 0)); if (raid_noautodetect) printk(KERN_INFO "md: Skipping autodetection of RAID arrays. (raid=noautodetect)\n"); else { diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c index c2683fcd792..ed652f40f07 100644 --- a/init/do_mounts_rd.c +++ b/init/do_mounts_rd.c @@ -262,8 +262,8 @@ int __init rd_load_disk(int n) { if (rd_prompt) change_floppy("root floppy disk to be loaded into RAM disk"); - create_dev("/dev/root", ROOT_DEV, root_device_name); - create_dev("/dev/ram", MKDEV(RAMDISK_MAJOR, n), NULL); + create_dev("/dev/root", ROOT_DEV); + create_dev("/dev/ram", MKDEV(RAMDISK_MAJOR, n)); return rd_load_image("/dev/root"); } diff --git a/init/main.c b/init/main.c index 0d57f6ccb63..bce0eb7f4f8 100644 --- a/init/main.c +++ b/init/main.c @@ -15,7 +15,6 @@ #include <linux/types.h> #include <linux/module.h> #include <linux/proc_fs.h> -#include <linux/devfs_fs_kernel.h> #include <linux/kernel.h> #include <linux/syscalls.h> #include <linux/string.h> diff --git a/mm/shmem.c b/mm/shmem.c index ea64c07cbe7..b14ff817d16 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -26,7 +26,6 @@ #include <linux/config.h> #include <linux/module.h> #include <linux/init.h> -#include <linux/devfs_fs_kernel.h> #include <linux/fs.h> #include <linux/mm.h> #include <linux/mman.h> @@ -2252,9 +2251,7 @@ static int __init init_tmpfs(void) printk(KERN_ERR "Could not register tmpfs\n"); goto out2; } -#ifdef CONFIG_TMPFS - devfs_mk_dir("shm"); -#endif + shm_mnt = vfs_kern_mount(&tmpfs_fs_type, MS_NOUSER, tmpfs_fs_type.name, NULL); if (IS_ERR(shm_mnt)) { diff --git a/mm/tiny-shmem.c b/mm/tiny-shmem.c index f9d6a9cc91c..5f2cbf0f153 100644 --- a/mm/tiny-shmem.c +++ b/mm/tiny-shmem.c @@ -12,7 +12,6 @@ #include <linux/fs.h> #include <linux/init.h> -#include <linux/devfs_fs_kernel.h> #include <linux/vfs.h> #include <linux/mount.h> #include <linux/file.h> @@ -33,9 +32,6 @@ static int __init init_tmpfs(void) { BUG_ON(register_filesystem(&tmpfs_fs_type) != 0); -#ifdef CONFIG_TMPFS - devfs_mk_dir("shm"); -#endif shm_mnt = kern_mount(&tmpfs_fs_type); BUG_ON(IS_ERR(shm_mnt)); diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c index b81fad89332..b105a715fa9 100644 --- a/net/bluetooth/rfcomm/tty.c +++ b/net/bluetooth/rfcomm/tty.c @@ -1021,13 +1021,12 @@ int rfcomm_init_ttys(void) rfcomm_tty_driver->owner = THIS_MODULE; rfcomm_tty_driver->driver_name = "rfcomm"; - rfcomm_tty_driver->devfs_name = "bluetooth/rfcomm/"; rfcomm_tty_driver->name = "rfcomm"; rfcomm_tty_driver->major = RFCOMM_TTY_MAJOR; rfcomm_tty_driver->minor_start = RFCOMM_TTY_MINOR; rfcomm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; rfcomm_tty_driver->subtype = SERIAL_TYPE_NORMAL; - rfcomm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS; + rfcomm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; rfcomm_tty_driver->init_termios = tty_std_termios; rfcomm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; tty_set_operations(rfcomm_tty_driver, &rfcomm_ops); diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c index 6f20b4206e0..b592c4bc333 100644 --- a/net/irda/ircomm/ircomm_tty.c +++ b/net/irda/ircomm/ircomm_tty.c @@ -124,7 +124,6 @@ static int __init ircomm_tty_init(void) driver->owner = THIS_MODULE; driver->driver_name = "ircomm"; driver->name = "ircomm"; - driver->devfs_name = "ircomm"; driver->major = IRCOMM_TTY_MAJOR; driver->minor_start = IRCOMM_TTY_MINOR; driver->type = TTY_DRIVER_TYPE_SERIAL; diff --git a/net/irda/irnet/irnet.h b/net/irda/irnet/irnet.h index e4fe1e80029..ad6caba02a7 100644 --- a/net/irda/irnet/irnet.h +++ b/net/irda/irnet/irnet.h @@ -244,7 +244,6 @@ #include <linux/skbuff.h> #include <linux/tty.h> #include <linux/proc_fs.h> -#include <linux/devfs_fs_kernel.h> #include <linux/netdevice.h> #include <linux/miscdevice.h> #include <linux/poll.h> diff --git a/sound/core/info.c b/sound/core/info.c index 10c1772bf3e..340332c6d97 100644 --- a/sound/core/info.c +++ b/sound/core/info.c @@ -29,7 +29,6 @@ #include <sound/info.h> #include <sound/version.h> #include <linux/proc_fs.h> -#include <linux/devfs_fs_kernel.h> #include <linux/mutex.h> #include <stdarg.h> diff --git a/sound/core/sound.c b/sound/core/sound.c index cd862728346..264f2efd1af 100644 --- a/sound/core/sound.c +++ b/sound/core/sound.c @@ -32,7 +32,6 @@ #include <sound/control.h> #include <sound/initval.h> #include <linux/kmod.h> -#include <linux/devfs_fs_kernel.h> #include <linux/mutex.h> #define SNDRV_OS_MINORS 256 @@ -42,7 +41,6 @@ int snd_major; EXPORT_SYMBOL(snd_major); static int cards_limit = 1; -static int device_mode = S_IFCHR | S_IRUGO | S_IWUGO; MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>"); MODULE_DESCRIPTION("Advanced Linux Sound Architecture driver for soundcards."); @@ -51,10 +49,6 @@ module_param(major, int, 0444); MODULE_PARM_DESC(major, "Major # for sound driver."); module_param(cards_limit, int, 0444); MODULE_PARM_DESC(cards_limit, "Count of auto-loadable soundcards."); -#ifdef CONFIG_DEVFS_FS -module_param(device_mode, int, 0444); -MODULE_PARM_DESC(device_mode, "Device file permission mask for devfs."); -#endif MODULE_ALIAS_CHARDEV_MAJOR(CONFIG_SND_MAJOR); /* this one holds the actual max. card number currently available. @@ -273,8 +267,6 @@ int snd_register_device(int type, struct snd_card *card, int dev, return minor; } snd_minors[minor] = preg; - if (type != SNDRV_DEVICE_TYPE_CONTROL || preg->card >= cards_limit) - devfs_mk_cdev(MKDEV(major, minor), S_IFCHR | device_mode, "snd/%s", name); if (card) device = card->dev; class_device_create(sound_class, NULL, MKDEV(major, minor), device, "%s", name); @@ -314,9 +306,6 @@ int snd_unregister_device(int type, struct snd_card *card, int dev) return -EINVAL; } - if (mptr->type != SNDRV_DEVICE_TYPE_CONTROL || - mptr->card >= cards_limit) /* created in sound.c */ - devfs_remove("snd/%s", mptr->name); class_device_destroy(sound_class, MKDEV(major, minor)); snd_minors[minor] = NULL; @@ -411,24 +400,17 @@ int __exit snd_minor_info_done(void) static int __init alsa_sound_init(void) { - short controlnum; - snd_major = major; snd_ecards_limit = cards_limit; - devfs_mk_dir("snd"); if (register_chrdev(major, "alsa", &snd_fops)) { snd_printk(KERN_ERR "unable to register native major device number %d\n", major); - devfs_remove("snd"); return -EIO; } if (snd_info_init() < 0) { unregister_chrdev(major, "alsa"); - devfs_remove("snd"); return -ENOMEM; } snd_info_minor_register(); - for (controlnum = 0; controlnum < cards_limit; controlnum++) - devfs_mk_cdev(MKDEV(major, controlnum<<5), S_IFCHR | device_mode, "snd/controlC%d", controlnum); #ifndef MODULE printk(KERN_INFO "Advanced Linux Sound Architecture Driver Version " CONFIG_SND_VERSION CONFIG_SND_DATE ".\n"); #endif @@ -437,16 +419,10 @@ static int __init alsa_sound_init(void) static void __exit alsa_sound_exit(void) { - short controlnum; - - for (controlnum = 0; controlnum < cards_limit; controlnum++) - devfs_remove("snd/controlC%d", controlnum); - snd_info_minor_unregister(); snd_info_done(); if (unregister_chrdev(major, "alsa") != 0) snd_printk(KERN_ERR "unable to unregister major device number %d\n", major); - devfs_remove("snd"); } module_init(alsa_sound_init) diff --git a/sound/oss/soundcard.c b/sound/oss/soundcard.c index d33bb464f70..a3328994890 100644 --- a/sound/oss/soundcard.c +++ b/sound/oss/soundcard.c @@ -38,7 +38,6 @@ #include <linux/wait.h> #include <linux/slab.h> #include <linux/ioport.h> -#include <linux/devfs_fs_kernel.h> #include <linux/major.h> #include <linux/delay.h> #include <linux/proc_fs.h> @@ -564,9 +563,6 @@ static int __init oss_init(void) sound_dmap_flag = (dmabuf > 0 ? 1 : 0); for (i = 0; i < sizeof (dev_list) / sizeof *dev_list; i++) { - devfs_mk_cdev(MKDEV(SOUND_MAJOR, dev_list[i].minor), - S_IFCHR | dev_list[i].mode, - "sound/%s", dev_list[i].name); class_device_create(sound_class, NULL, MKDEV(SOUND_MAJOR, dev_list[i].minor), NULL, "%s", dev_list[i].name); @@ -574,15 +570,10 @@ static int __init oss_init(void) if (!dev_list[i].num) continue; - for (j = 1; j < *dev_list[i].num; j++) { - devfs_mk_cdev(MKDEV(SOUND_MAJOR, - dev_list[i].minor + (j*0x10)), - S_IFCHR | dev_list[i].mode, - "sound/%s%d", dev_list[i].name, j); + for (j = 1; j < *dev_list[i].num; j++) class_device_create(sound_class, NULL, MKDEV(SOUND_MAJOR, dev_list[i].minor + (j*0x10)), NULL, "%s%d", dev_list[i].name, j); - } } if (sound_nblocks >= 1024) @@ -596,14 +587,11 @@ static void __exit oss_cleanup(void) int i, j; for (i = 0; i < sizeof (dev_list) / sizeof *dev_list; i++) { - devfs_remove("sound/%s", dev_list[i].name); class_device_destroy(sound_class, MKDEV(SOUND_MAJOR, dev_list[i].minor)); if (!dev_list[i].num) continue; - for (j = 1; j < *dev_list[i].num; j++) { - devfs_remove("sound/%s%d", dev_list[i].name, j); + for (j = 1; j < *dev_list[i].num; j++) class_device_destroy(sound_class, MKDEV(SOUND_MAJOR, dev_list[i].minor + (j*0x10))); - } } unregister_sound_special(1); diff --git a/sound/sound_core.c b/sound/sound_core.c index 6f849720aef..7535ec821dc 100644 --- a/sound/sound_core.c +++ b/sound/sound_core.c @@ -44,7 +44,6 @@ #include <linux/sound.h> #include <linux/major.h> #include <linux/kmod.h> -#include <linux/devfs_fs_kernel.h> #include <linux/device.h> #define SOUND_STEP 16 @@ -172,8 +171,6 @@ static int sound_insert_unit(struct sound_unit **list, const struct file_operati else sprintf(s->name, "sound/%s%d", name, r / SOUND_STEP); - devfs_mk_cdev(MKDEV(SOUND_MAJOR, s->unit_minor), - S_IFCHR | mode, s->name); class_device_create(sound_class, NULL, MKDEV(SOUND_MAJOR, s->unit_minor), dev, s->name+6); return r; @@ -197,7 +194,6 @@ static void sound_remove_unit(struct sound_unit **list, int unit) p = __sound_remove_unit(list, unit); spin_unlock(&sound_loader_lock); if (p) { - devfs_remove(p->name); class_device_destroy(sound_class, MKDEV(SOUND_MAJOR, p->unit_minor)); kfree(p); } @@ -570,7 +566,6 @@ static void __exit cleanup_soundcore(void) /* We have nothing to really do here - we know the lists must be empty */ unregister_chrdev(SOUND_MAJOR, "sound"); - devfs_remove("sound"); class_destroy(sound_class); } @@ -580,7 +575,6 @@ static int __init init_soundcore(void) printk(KERN_ERR "soundcore: sound device already in use.\n"); return -EBUSY; } - devfs_mk_dir ("sound"); sound_class = class_create(THIS_MODULE, "sound"); if (IS_ERR(sound_class)) return PTR_ERR(sound_class); |