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2012-07-30coredump: warn about unsafe suid_dumpable / core_pattern comboKees Cook1-5/+5
When suid_dumpable=2, detect unsafe core_pattern settings and warn when they are seen. Signed-off-by: Kees Cook <keescook@chromium.org> Suggested-by: Andrew Morton <akpm@linux-foundation.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alan Cox <alan@linux.intel.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Doug Ledford <dledford@redhat.com> Cc: Serge Hallyn <serge.hallyn@canonical.com> Cc: James Morris <james.l.morris@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-30fs: make dumpable=2 require fully qualified pathKees Cook1-3/+14
When the suid_dumpable sysctl is set to "2", and there is no core dump pipe defined in the core_pattern sysctl, a local user can cause core files to be written to root-writable directories, potentially with user-controlled content. This means an admin can unknowningly reintroduce a variation of CVE-2006-2451, allowing local users to gain root privileges. $ cat /proc/sys/fs/suid_dumpable 2 $ cat /proc/sys/kernel/core_pattern core $ ulimit -c unlimited $ cd / $ ls -l core ls: cannot access core: No such file or directory $ touch core touch: cannot touch `core': Permission denied $ OHAI="evil-string-here" ping localhost >/dev/null 2>&1 & $ pid=$! $ sleep 1 $ kill -SEGV $pid $ ls -l core -rw------- 1 root kees 458752 Jun 21 11:35 core $ sudo strings core | grep evil OHAI=evil-string-here While cron has been fixed to abort reading a file when there is any parse error, there are still other sensitive directories that will read any file present and skip unparsable lines. Instead of introducing a suid_dumpable=3 mode and breaking all users of mode 2, this only disables the unsafe portion of mode 2 (writing to disk via relative path). Most users of mode 2 (e.g. Chrome OS) already use a core dump pipe handler, so this change will not break them. For the situations where a pipe handler is not defined but mode 2 is still active, crash dumps will only be written to fully qualified paths. If a relative path is defined (e.g. the default "core" pattern), dump attempts will trigger a printk yelling about the lack of a fully qualified path. Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alan Cox <alan@linux.intel.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Doug Ledford <dledford@redhat.com> Cc: Serge Hallyn <serge.hallyn@canonical.com> Cc: James Morris <james.l.morris@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-30fs/xattr.c:getxattr(): improve handling of allocation failuresSasha Levin1-4/+12
This allocation can be as large as 64k. - Add __GFP_NOWARN so the falied kmalloc() is silent - Fall back to vmalloc() if the kmalloc() failed Signed-off-by: Sasha Levin <levinsasha928@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-30ntfs: remove references to long gone super operations and unimplemented methodsFernando Luis Vazquez Cao1-17/+0
->delete_inode(), ->write_super_lockfs(), ->unlockfs() are gone so remove refereces to them in the NTFS code. Remove unnecessary comments about unimplemented methods while at it (suggested by Christoph Hellwig). Noticed while cleaning up the fsfreeze mess. Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp> Cc: Anton Altaparmakov <anton@tuxera.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-27Merge tag 'ext4_for_linus' of ↵Linus Torvalds14-196/+563
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull ext4 updates from Ted Ts'o: "The usual collection of bug fixes and optimizations. Perhaps of greatest note is a speed up for parallel, non-allocating DIO writes, since we no longer take the i_mutex lock in that case. For bug fixes, we fix an incorrect overhead calculation which caused slightly incorrect results for df(1) and statfs(2). We also fixed bugs in the metadata checksum feature." * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (23 commits) ext4: undo ext4_calc_metadata_amount if we fail to claim space ext4: don't let i_reserved_meta_blocks go negative ext4: fix hole punch failure when depth is greater than 0 ext4: remove unnecessary argument from __ext4_handle_dirty_metadata() ext4: weed out ext4_write_super ext4: remove unnecessary superblock dirtying ext4: convert last user of ext4_mark_super_dirty() to ext4_handle_dirty_super() ext4: remove useless marking of superblock dirty ext4: fix ext4 mismerge back in January ext4: remove dynamic array size in ext4_chksum() ext4: remove unused variable in ext4_update_super() ext4: make quota as first class supported feature ext4: don't take the i_mutex lock when doing DIO overwrites ext4: add a new nolock flag in ext4_map_blocks ext4: split ext4_file_write into buffered IO and direct IO ext4: remove an unused statement in ext4_mb_get_buddy_page_lock() ext4: fix out-of-date comments in extents.c ext4: use s_csum_seed instead of i_csum_seed for xattr block ext4: use proper csum calculation in ext4_rename ext4: fix overhead calculation used by ext4_statfs() ...
2012-07-27Merge branch 'kmap_atomic' of git://github.com/congwang/linuxLinus Torvalds2-3/+3
Pull final kmap_atomic cleanups from Cong Wang: "This should be the final round of cleanup, as the definitions of enum km_type finally get removed from the whole tree. The patches have been in linux-next for a long time." * 'kmap_atomic' of git://github.com/congwang/linux: pipe: remove KM_USER0 from comments vmalloc: remove KM_USER0 from comments feature-removal-schedule.txt: remove kmap_atomic(page, km_type) tile: remove km_type definitions um: remove km_type definitions asm-generic: remove km_type definitions avr32: remove km_type definitions frv: remove km_type definitions powerpc: remove km_type definitions arm: remove km_type definitions highmem: remove the deprecated form of kmap_atomic tile: remove usage of enum km_type frv: remove the second parameter of kmap_atomic_primary() jbd2: remove the second argument of kmap_atomic
2012-07-26Btrfs: using vmalloc and friends needs vmalloc.hStephen Rothwell1-0/+1
On powerpc, we don't get the implicit vmalloc.h include, and as a result the build fails noisily: fs/btrfs/send.c: In function 'fs_path_free': fs/btrfs/send.c:185:4: error: implicit declaration of function 'vfree' [-Werror=implicit-function-declaration] fs/btrfs/send.c: In function 'fs_path_ensure_buf': fs/btrfs/send.c:215:4: error: implicit declaration of function 'vmalloc' [-Werror=implicit-function-declaration] fs/btrfs/send.c:215:12: warning: assignment makes pointer from integer without a cast [enabled by default] fs/btrfs/send.c:225:12: warning: assignment makes pointer from integer without a cast [enabled by default] fs/btrfs/send.c:233:13: warning: assignment makes pointer from integer without a cast [enabled by default] fs/btrfs/send.c: In function 'iterate_dir_item': fs/btrfs/send.c:900:10: warning: assignment makes pointer from integer without a cast [enabled by default] fs/btrfs/send.c:909:11: warning: assignment makes pointer from integer without a cast [enabled by default] fs/btrfs/send.c: In function 'btrfs_ioctl_send': fs/btrfs/send.c:4463:17: warning: assignment makes pointer from integer without a cast [enabled by default] fs/btrfs/send.c:4469:17: warning: assignment makes pointer from integer without a cast [enabled by default] fs/btrfs/send.c:4475:2: error: implicit declaration of function 'vzalloc' [-Werror=implicit-function-declaration] fs/btrfs/send.c:4475:20: warning: assignment makes pointer from integer without a cast [enabled by default] fs/btrfs/send.c:4483:21: warning: assignment makes pointer from integer without a cast [enabled by default] Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-26Merge branch 'for-linus' of ↵Linus Torvalds35-631/+8689
git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull large btrfs update from Chris Mason: "This pull request is very large, and the two main features in here have been under testing/devel for quite a while. We have subvolume quotas from the strato developers. This enables full tracking of how many blocks are allocated to each subvolume (and all snapshots) and you can set limits on a per-subvolume basis. You can also create quota groups and toss multiple subvolumes into a big group. It's everything you need to be a web hosting company and give each user their own subvolume. The userland side of the quotas is being refreshed, they'll send out details on where to grab it soon. Next is the kernel side of btrfs send/receive from Alexander Block. This leverages the same infrastructure as the quota code to figure out relationships between blocks and their owners. It can then compute the difference between two snapshots and sends the diffs in a neutral format into userland. The basic model: create a snapshot send that snapshot as the initial backup make changes create a second snapshot send the incremental as a backup delete the first snapshot (use the second snapshot for the next incremental) The receive portion is all in userland, and in the 'next' branch of my btrfs-progs repo. There's still some work to do in terms of optimizing the send side from kernel to userland. The really important part is figuring out how two snapshots are different, and this is where we are concentrating right now. The initial send of a dataset is a little slower than tar, but the incremental sends are dramatically faster than what rsync can do. On top of all of that, we have a nice queue of fixes, cleanups and optimizations." Fix up trivial modify/del conflict in fs/btrfs/ioctl.c Also fix up semantic conflict in fs/btrfs/send.c: the interface to dentry_open() changed in commit 765927b2d508 ("switch dentry_open() to struct path, make it grab references itself"), and since it now grabs whatever references it needs, we should no longer do the mntget() on the mnt (and we need to dput() the dentry reference we took). * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (65 commits) Btrfs: uninit variable fixes in send/receive Btrfs: introduce BTRFS_IOC_SEND for btrfs send/receive Btrfs: add btrfs_compare_trees function Btrfs: introduce subvol uuids and times Btrfs: make iref_to_path non static Btrfs: add a barrier before a waitqueue_active check Btrfs: call the ordered free operation without any locks held Btrfs: Check INCOMPAT flags on remount and add helper function Btrfs: add helper for tree enumeration btrfs: allow cross-subvolume file clone Btrfs: improve multi-thread buffer read Btrfs: make btrfs's allocation smoothly with preallocation Btrfs: lock the transition from dirty to writeback for an eb Btrfs: fix potential race in extent buffer freeing Btrfs: don't return true in releasepage unless we actually freed the eb Btrfs: suppress printk() if all device I/O stats are zero Btrfs: remove unwanted printk() for btrfs device I/O stats Btrfs: rewrite BTRFS_SETGET_FUNCS Btrfs: zero unused bytes in inode item Btrfs: kill free_space pointer from inode structure ... Conflicts: fs/btrfs/ioctl.c
2012-07-26Merge tag 'dlm-3.6' of ↵Linus Torvalds14-668/+1600
git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm Pull dlm updatesfrom David Teigland: "This set includes a major redesign of recording the master node for resources. The old dir hash table, which just held the master node for each resource, has been removed. The rsb hash table has always duplicated the master node value from the dir, and is now the single record of it. Having two full hash tables of all resources has always been a waste, especially since one just duplicated a single value from the other. Local requests will now often require one instead of two lengthy hash table searches. The other substantial change is made possible by the dirtbl removal, and fixes a long standing race between resource removal and lookup by reworking how removal is done. At the same time it improves the efficiency of removal by avoiding repeated searches through a hash bucket. The other commits include minor fixes and changes." * tag 'dlm-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm: dlm: fix missing dir remove dlm: fix conversion deadlock from recovery dlm: use wait_event_timeout dlm: fix race between remove and lookup dlm: use idr instead of list for recovered rsbs dlm: use rsbtbl as resource directory
2012-07-26Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6Linus Torvalds38-1148/+8555
Pull CIFS fixes from Steve French. * 'for-next' of git://git.samba.org/sfrench/cifs-2.6: (40 commits) cifs: ensure that we always do cifsFileInfo_get under the spinlock CIFS: Make CAP_* checks protocol independent CIFS: Allow SMB2 statistics to be tracked CIFS: Move clear/print_stats code to ops struct CIFS: Add echo request support for SMB2 CIFS: Move echo code to osp struct CIFS: Add SMB2 support for async requests CIFS: Setup async request in ops struct CIFS: Add SMB2 support for build_path_to_root CIFS: Move building path to root to ops struct CIFS: Query SMB2 inode info CIFS: Move query inode info code to ops struct CIFS: Add SMB2 support for is_path_accessible CIFS: Move is_path_accessible to ops struct CIFS: Move informational tcon calls to ops struct CIFS: Move getting dfs referalls to ops struct CIFS: Process reconnects for SMB2 shares CIFS: Add tree connect/disconnect capability for SMB2 CIFS: Add session setup/logoff capability for SMB2 CIFS: Add capability to send SMB2 negotiate message ...
2012-07-26posix_types.h: Cleanup stale __NFDBITS and related definitionsJosh Boyer2-6/+6
Recently, glibc made a change to suppress sign-conversion warnings in FD_SET (glibc commit ceb9e56b3d1). This uncovered an issue with the kernel's definition of __NFDBITS if applications #include <linux/types.h> after including <sys/select.h>. A build failure would be seen when passing the -Werror=sign-compare and -D_FORTIFY_SOURCE=2 flags to gcc. It was suggested that the kernel should either match the glibc definition of __NFDBITS or remove that entirely. The current in-kernel uses of __NFDBITS can be replaced with BITS_PER_LONG, and there are no uses of the related __FDELT and __FDMASK defines. Given that, we'll continue the cleanup that was started with commit 8b3d1cda4f5f ("posix_types: Remove fd_set macros") and drop the remaining unused macros. Additionally, linux/time.h has similar macros defined that expand to nothing so we'll remove those at the same time. Reported-by: Jeff Law <law@redhat.com> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> CC: <stable@vger.kernel.org> Signed-off-by: Josh Boyer <jwboyer@redhat.com> [ .. and fix up whitespace as per akpm ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-26Merge tag 'driver-core-3.6-rc1' of ↵Linus Torvalds2-2/+12
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core changes from Greg Kroah-Hartman: "Here's the big driver core pull request for 3.6-rc1. Unlike 3.5, this kernel should be a lot tamer, with the printk changes now settled down. All we have here is some extcon driver updates, w1 driver updates, a few printk cleanups that weren't needed for 3.5, but are good to have now, and some other minor fixes/changes in the driver core. All of these have been in the linux-next releases for a while now. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>" * tag 'driver-core-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (38 commits) printk: Export struct log size and member offsets through vmcoreinfo Drivers: hv: Change the hex constant to a decimal constant driver core: don't trigger uevent after failure extcon: MAX77693: Add extcon-max77693 driver to support Maxim MAX77693 MUIC device sysfs: fail dentry revalidation after namespace change fix sysfs: fail dentry revalidation after namespace change extcon: spelling of detach in function doc extcon: arizona: Stop microphone detection if we give up on it extcon: arizona: Update cable reporting calls and split headset PM / Runtime: Do not increment device usage counts before probing kmsg - do not flush partial lines when the console is busy kmsg - export "continuation record" flag to /dev/kmsg kmsg - avoid warning for CONFIG_PRINTK=n compilations kmsg - properly print over-long continuation lines driver-core: Use kobj_to_dev instead of re-implementing it driver-core: Move kobj_to_dev from genhd.h to device.h driver core: Move deferred devices to the end of dpm_list before probing driver core: move uevent call to driver_register driver core: fix shutdown races with probe/remove(v3) Extcon: Arizona: Add driver for Wolfson Arizona class devices ...
2012-07-26Merge tag 'staging-3.6-rc1' of ↵Linus Torvalds8-222/+576
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging tree patches from Greg Kroah-Hartman: "Here's the big staging tree merge for the 3.6-rc1 merge window. There are some patches in here outside of drivers/staging/, notibly the iio code (which is still stradeling the staging / not staging boundry), the pstore code, and the tracing code. All of these have gotten acks from the various subsystem maintainers to be included in this tree. The pstore and tracing patches are related, and are coming here as they replace one of the android staging drivers. Otherwise, the normal staging mess. Lots of cleanups and a few new drivers (some iio drivers, and the large csr wireless driver abomination.) Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>" Fixed up trivial conflicts in drivers/staging/comedi/drivers/s626.h and drivers/staging/gdm72xx/netlink_k.c * tag 'staging-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1108 commits) staging: csr: delete a bunch of unused library functions staging: csr: remove csr_utf16.c staging: csr: remove csr_pmem.h staging: csr: remove CsrPmemAlloc staging: csr: remove CsrPmemFree() staging: csr: remove CsrMemAllocDma() staging: csr: remove CsrMemCalloc() staging: csr: remove CsrMemAlloc() staging: csr: remove CsrMemFree() and CsrMemFreeDma() staging: csr: remove csr_util.h staging: csr: remove CsrOffSetOf() stating: csr: remove unneeded #includes in csr_util.c staging: csr: make CsrUInt16ToHex static staging: csr: remove CsrMemCpy() staging: csr: remove CsrStrLen() staging: csr: remove CsrVsnprintf() staging: csr: remove CsrStrDup staging: csr: remove CsrStrChr() staging: csr: remove CsrStrNCmp staging: csr: remove CsrStrCmp ...
2012-07-25Btrfs: uninit variable fixes in send/receiveChris Mason1-2/+2
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
2012-07-25Merge branch 'send-v2' of git://github.com/ablock84/linux-btrfs into for-linusChris Mason14-40/+5483
This is the kernel portion of btrfs send/receive Conflicts: fs/btrfs/Makefile fs/btrfs/backref.h fs/btrfs/ctree.c fs/btrfs/ioctl.c fs/btrfs/ioctl.h Signed-off-by: Chris Mason <chris.mason@fusionio.com>
2012-07-25Btrfs: introduce BTRFS_IOC_SEND for btrfs send/receiveAlexander Block5-1/+4717
This patch introduces the BTRFS_IOC_SEND ioctl that is required for send. It allows btrfs-progs to implement full and incremental sends. Patches for btrfs-progs will follow. Signed-off-by: Alexander Block <ablock84@googlemail.com> Reviewed-by: David Sterba <dave@jikos.cz> Reviewed-by: Arne Jansen <sensille@gmx.net> Reviewed-by: Jan Schmidt <list.btrfs@jan-o-sch.net> Reviewed-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>
2012-07-25Btrfs: add btrfs_compare_trees functionAlexander Block2-0/+440
This function is used to find the differences between two trees. The tree compare skips whole subtrees if it detects shared tree blocks and thus is pretty fast. Signed-off-by: Alexander Block <ablock84@googlemail.com> Reviewed-by: David Sterba <dave@jikos.cz> Reviewed-by: Arne Jansen <sensille@gmx.net> Reviewed-by: Jan Schmidt <list.btrfs@jan-o-sch.net> Reviewed-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>
2012-07-25Btrfs: introduce subvol uuids and timesAlexander Block8-15/+292
This patch introduces uuids for subvolumes. Each subvolume has it's own uuid. In case it was snapshotted, it also contains parent_uuid. In case it was received, it also contains received_uuid. It also introduces subvolume ctime/otime/stime/rtime. The first two are comparable to the times found in inodes. otime is the origin/creation time and ctime is the change time. stime/rtime are only valid on received subvolumes. stime is the time of the subvolume when it was sent. rtime is the time of the subvolume when it was received. Additionally to the times, we have a transid for each time. They are updated at the same place as the times. btrfs receive uses stransid and rtransid to find out if a received subvolume changed in the meantime. If an older kernel mounts a filesystem with the extented fields, all fields become invalid. The next mount with a new kernel will detect this and reset the fields. Signed-off-by: Alexander Block <ablock84@googlemail.com> Reviewed-by: David Sterba <dave@jikos.cz> Reviewed-by: Arne Jansen <sensille@gmx.net> Reviewed-by: Jan Schmidt <list.btrfs@jan-o-sch.net> Reviewed-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>
2012-07-25Btrfs: make iref_to_path non staticAlexander Block2-5/+9
Make iref_to_path non static (needed in send) and rename it to btrfs_iref_to_path Signed-off-by: Alexander Block <ablock84@googlemail.com>
2012-07-25Btrfs: add a barrier before a waitqueue_active checkChris Mason1-0/+1
We were missing wakeups on the delayed ref waitqueue due to races on waitqueue_active. Signed-off-by: Chris Mason <chris.mason@fusionio.com>
2012-07-25Btrfs: call the ordered free operation without any locks heldChris Mason1-1/+8
Each ordered operation has a free callback, and this was called with the worker spinlock held. Josef made the free callback also call iput, which we can't do with the spinlock. This drops the spinlock for the free operation and grabs it again before moving through the rest of the list. We'll circle back around to this and find a cleaner way that doesn't bounce the lock around so much. Signed-off-by: Chris Mason <chris.mason@fusionio.com> cc: stable@kernel.org
2012-07-25Btrfs: Check INCOMPAT flags on remount and add helper functionMitch Harder3-14/+20
In support of the recently added capability to remount with lzo compression, provide a helper function to check the compression INCOMPAT flags when remounting with lzo compression, and set the flags if necessary. Also, implement the new helper function when defragmenting with explicit lzo compression and when setting the default subvolume. Signed-off-by: Mitch Harder <mitch.harder@sabayonlinux.org> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
2012-07-25Merge branch 'qgroup' of git://git.jan-o-sch.net/btrfs-unstable into for-linusChris Mason15-242/+2697
Conflicts: fs/btrfs/ioctl.c fs/btrfs/ioctl.h fs/btrfs/transaction.c fs/btrfs/transaction.h Signed-off-by: Chris Mason <chris.mason@fusionio.com>
2012-07-25cifs: ensure that we always do cifsFileInfo_get under the spinlockJeff Layton2-8/+15
The readpages bug is a regression that was introduced in 6993f74a5. This also fixes a couple of similar bugs in the uncached read and write codepaths. Also, prevent this sort of thing in the future by having cifsFileInfo_get take the spinlock itself, and adding a _locked variant for use in places that are already holding the lock. The _put code has always done that so this makes for a less confusing interface. Cc: <stable@vger.kernel.org> # 3.5.x Reviewed-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-25Btrfs: add helper for tree enumerationArne Jansen2-0/+77
Often no exact match is wanted but just the next lower or higher item. There's a lot of duplicated code throughout btrfs to deal with the corner cases. This patch adds a helper function that can facilitate searching. Signed-off-by: Arne Jansen <sensille@gmx.net>
2012-07-25btrfs: allow cross-subvolume file cloneDavid Sterba1-3/+8
Lift the EXDEV condition and allow different root trees for files being cloned, then pass source inode's root when searching for extents. Cloning is not allowed to cross vfsmounts, ie. when two subvolumes from one filesystem are mounted separately. Signed-off-by: David Sterba <dsterba@suse.cz>
2012-07-24Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmwLinus Torvalds21-370/+1107
Pull GFS2 updates from Steven Whitehouse. * git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw: GFS2: Eliminate 64-bit divides GFS2: Reduce file fragmentation GFS2: kernel panic with small gfs2 filesystems - 1 RG GFS2: Fixing double brelse'ing bh allocated in gfs2_meta_read when EIO occurs GFS2: Combine functions get_local_rgrp and gfs2_inplace_reserve GFS2: Add kobject release method GFS2: Size seq_file buffer more carefully GFS2: Use seq_vprintf for glocks debugfs file seq_file: Add seq_vprintf function and export it GFS2: Use lvbs for storing rgrp information with mount option GFS2: Cache last hash bucket for glock seq_files GFS2: Increase buffer size for glocks and glstats debugfs files GFS2: Fix error handling when reading an invalid block from the journal GFS2: Add "top dir" flag support GFS2: Fold quota data into the reservations struct GFS2: Extend the life of the reservations
2012-07-24Merge branch 'for_linus' of ↵Linus Torvalds12-82/+88
git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs Pull misc udf, ext2, ext3, and isofs fixes from Jan Kara: "Assorted, mostly trivial, fixes for udf, ext2, ext3, and isofs. I'm on vacation and scarcely checking email since we are expecting baby any day now but these fixes should be safe to go in and I don't want to delay them unnecessarily." * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: udf: avoid info leak on export isofs: avoid info leak on export udf: Improve table length check to avoid possible overflow ext3: Check return value of blkdev_issue_flush() jbd: Check return value of blkdev_issue_flush() udf: Do not decrement i_blocks when freeing indirect extent block udf: Fix memory leak when mounting ext2: cleanup the confused goto label UDF: Remove unnecessary variable "offset" from udf_fill_inode udf: stop using s_dirt ext3: force ro mount if ext3_setup_super() fails quota: fix checkpatch.pl warning by replacing <asm/uaccess.h> with <linux/uaccess.h>
2012-07-24Merge branch 'for-linus' of ↵Linus Torvalds1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree from Jiri Kosina: "Trivial updates all over the place as usual." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (29 commits) Fix typo in include/linux/clk.h . pci: hotplug: Fix typo in pci iommu: Fix typo in iommu video: Fix typo in drivers/video Documentation: Add newline at end-of-file to files lacking one arm,unicore32: Remove obsolete "select MISC_DEVICES" module.c: spelling s/postition/position/g cpufreq: Fix typo in cpufreq driver trivial: typo in comment in mksysmap mach-omap2: Fix typo in debug message and comment scsi: aha152x: Fix sparse warning and make printing pointer address more portable. Change email address for Steve Glendinning Btrfs: fix typo in convert_extent_bit via: Remove bogus if check netprio_cgroup.c: fix comment typo backlight: fix memory leak on obscure error path Documentation: asus-laptop.txt references an obsolete Kconfig item Documentation: ManagementStyle: fixed typo mm/vmscan: cleanup comment error in balance_pgdat mm: cleanup on the comments of zone_reclaim_stat ...
2012-07-24CIFS: Make CAP_* checks protocol independentPavel Shilovsky11-49/+66
Since both CIFS and SMB2 use ses->capabilities (server->capabilities) field but flags are different we should make such checks protocol independent. Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Allow SMB2 statistics to be trackedPavel Shilovsky3-3/+91
Since there are only 19 command codes, it also is easier to track by exact command code than it was for cifs. Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Move clear/print_stats code to ops structPavel Shilovsky5-103/+129
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Add echo request support for SMB2Pavel Shilovsky6-3/+73
Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Move echo code to osp structPavel Shilovsky3-4/+11
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Add SMB2 support for async requestsPavel Shilovsky3-1/+27
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Setup async request in ops structPavel Shilovsky4-2/+8
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Add SMB2 support for build_path_to_rootPavel Shilovsky1-0/+18
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Move building path to root to ops structPavel Shilovsky6-38/+48
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Query SMB2 inode infoPavel Shilovsky8-2/+417
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Move query inode info code to ops structPavel Shilovsky5-70/+107
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Add SMB2 support for is_path_accessiblePavel Shilovsky7-0/+423
that needs for a successful mount through SMB2 protocol. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Move is_path_accessible to ops structPavel Shilovsky5-62/+69
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Move informational tcon calls to ops structPavel Shilovsky3-27/+34
and rename variables in cifs_mount. Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Move getting dfs referalls to ops structPavel Shilovsky5-22/+27
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Process reconnects for SMB2 sharesPavel Shilovsky4-9/+143
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Add tree connect/disconnect capability for SMB2Pavel Shilovsky7-5/+230
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Add session setup/logoff capability for SMB2Pavel Shilovsky8-3/+284
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Add capability to send SMB2 negotiate messagePavel Shilovsky8-11/+417
and add negotiate request type to let set_credits know that we are only on negotiate stage and no need to make a decision about disabling echos and oplocks. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Respect SMB2 header/max header sizePavel Shilovsky2-8/+31
Use SMB2 header size values for allocation and memset because they are bigger and suitable for both CIFS and SMB2. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Make demultiplex_thread work with SMB2 codePavel Shilovsky6-2/+384
Now we can process SMB2 messages: check message, get message id and wakeup awaiting routines. Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Steve French <smfrench@gmail.com>