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2007-10-19Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds26-383/+961
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: (51 commits) [CIFS] log better errors on failed mounts [CIFS] Return better error when server requires signing but client forbids [CIFS] fix typo [CIFS] acl support part 4 [CIFS] Fix minor problems noticed by scan [CIFS] fix bad handling of EAGAIN error on kernel_recvmsg in cifs_demultiplex_thread [CIFS] build break [CIFS] endian fixes [CIFS] endian fixes in new acl code [CIFS] Fix some endianness problems in new acl code [CIFS] missing #endif from a previous patch [CIFS] formatting fixes [CIFS] Break up unicode_sessetup string functions [CIFS] parse server_GUID in SPNEGO negProt response [CIFS] [CIFS] Fix endian conversion problem in posix mkdir [CIFS] fix build break when lanman not enabled [CIFS] remove two sparse warnings [CIFS] remove compile warnings when debug disabled [CIFS] CIFS ACL support part 3 ...
2007-10-19Use helpers to obtain task pid in printksPavel Emelyanov1-1/+1
The task_struct->pid member is going to be deprecated, so start using the helpers (task_pid_nr/task_pid_vnr/task_pid_nr_ns) in the kernel. The first thing to start with is the pid, printed to dmesg - in this case we may safely use task_pid_nr(). Besides, printks produce more (much more) than a half of all the explicit pid usage. [akpm@linux-foundation.org: git-drm went and changed lots of stuff] Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Cc: Dave Airlie <airlied@linux.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-18[CIFS] log better errors on failed mountsSteve French6-26/+35
Also returns more accurate errors to mount for the cases of account expired and password expired Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-18CIFS: ignore mode change if it's just for clearing setuid/setgid bitsJeff Layton1-0/+5
If the ATTR_KILL_S*ID bits are set then any mode change is only for clearing the setuid/setgid bits. For CIFS, skip the mode change and let the server handle it. Signed-off-by: Jeff Layton <jlayton@redhat.com> Cc: Steven French <sfrench@us.ibm.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-18[CIFS] Return better error when server requires signing but client forbidsSteve French2-2/+5
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-17[CIFS] fix typoSteve French1-1/+1
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-17[CIFS] acl support part 4Steve French3-9/+25
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-17[CIFS] Fix minor problems noticed by scanSteve French2-7/+10
Coverity scan pointed out some minor possible errors. Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-17[CIFS] fix bad handling of EAGAIN error on kernel_recvmsg in ↵Steve French2-2/+7
cifs_demultiplex_thread When kernel_recvmsg returns -EAGAIN or -ERESTARTSYS, then cifs_demultiplex_thread sleeps for a bit and then tries the read again. When it does this, it's not zeroing out the length and that throws off the value of total_read. Fix it to zero out the length. Can cause memory corruption: If kernel_recvmsg returns an error and total_read is a large enough value, then we'll end up going through the loop again. total_read will be a bogus value, as will (pdu_length-total_read). When this happens we end up calling kernel_recvmsg with a bogus value (possibly larger than the current iov_len). At that point, memcpy_toiovec can overrun iov. It will start walking up the stack, casting other things that are there to struct iovecs (since it assumes that it's been passed an array of them). Any pointer on the stack at an address above the kvec is a candidate for corruption here. Many thanks to Ulrich Obergfell for pointing this out. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-17Slab API: remove useless ctor parameter and reorder parametersChristoph Lameter1-1/+1
Slab constructors currently have a flags parameter that is never used. And the order of the arguments is opposite to other slab functions. The object pointer is placed before the kmem_cache pointer. Convert ctor(void *object, struct kmem_cache *s, unsigned long flags) to ctor(struct kmem_cache *s, void *object) throughout the kernel [akpm@linux-foundation.org: coupla fixes] Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17[CIFS] build breakSteve French1-1/+1
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-17[CIFS] endian fixesSteve French1-3/+3
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-16[CIFS] endian fixes in new acl codeDave Kleikamp1-11/+11
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-16[CIFS] Fix some endianness problems in new acl codeSteve French3-27/+26
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-16[CIFS] missing #endif from a previous patchSteve French1-0/+2
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-16[CIFS] formatting fixesCyrill Gorcunov1-31/+26
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-16[CIFS] Break up unicode_sessetup string functionsJeff Layton2-26/+55
SPNEGO setup needs only some of these strings. Break up unicode_ssetup_strings so we can call them individually. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-16[CIFS] parse server_GUID in SPNEGO negProt responseJeff Layton1-14/+18
SPNEGO NegProt response also contains a server_GUID. Parse it as we would for RawNTLMSSP. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-16[CIFS]Jeff Layton1-2/+2
[CIFS] fix error message about packet signing When packet signing is disabled and the server requires it, cifs prints an error message. The current message refers to a file in /proc that no longer exists. Fix it to refer to the correct file. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-14[CIFS] Fix endian conversion problem in posix mkdirCyril Gorcunov5-10/+13
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-12[CIFS] fix build break when lanman not enabledSteve French1-0/+3
Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-12[CIFS] remove two sparse warningsSteve French2-5/+5
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-12[CIFS] remove compile warnings when debug disabledSteve French1-2/+2
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-12[CIFS] CIFS ACL support part 3Steve French7-22/+141
Signed-off-by: Shirish Pargaonkar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-04[CIFS] Fix cifsd so shuts down when signing fails during mountSteve French4-8/+42
Fixes two problems: 1) we dropped down to negotiating lanman if we did not recognize the mechanism (krb5 e.g.) 2) we did not stop cifsd (thus will fail when doing rmod cifs with slab free errors) when we fail tcon but have a bad session (which is the case in which signing is required but we don't allow signing on the client) It also turns on extended security flag in the header when passing "sec=krb5" on mount command (although kerberos support is not done of course) Acked-by: Jeff Layton <jlayton@redhat.com> CC: Shaggy <shaggy@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-03[CIFS] Cleanup formattingSteve French2-46/+51
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-03[CIFS] CIFS ACL support (part 2)Shirish Pargaonkar4-60/+151
Signed-off-by: Shirish Pargaonkar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-03[CIFS] remove some redundant argument checksMariusz Kozlowski1-14/+8
This patch does kmalloc + memset conversion to kzalloc and removes some redundant argument checks. Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-02[CIFS] Reduce chance of list corruption in find_writable_fileSteve French1-15/+39
When find_writable_file is racing with close and the session to the server goes down, Shaggy noticed that there was a chance that an open file in the list of files off the inode could have been freed by close since cifs_reconnect can block (the spinlock thus not held). This means that we have to start over at the beginning of the list in some cases. There is a 2nd change that needs to be made later (pointed out by Jeremy Allison and Shaggy) in order to prevent cifs_close ever freeing the cifs per file info when a write is pending. Although we delay close from freeing this memory for sufficiently long for all known cases, ultimately on a very, very slow write overlapping a close pending we need to allow close to return (without freeing the cifs file info) and defer freeing the memory to be the responsibility of the (sloooow) write thread (presumably have to look at every place wrtPending is decremented - and add a flag for deferred free for after wrtPending goes to zero). Acked-by: Shaggy <shaggy@us.ibm.com> Acked-by: Shirish Pargaonkar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-01[CIFS] change misleading field nameSteve French2-8/+6
num_auth is really num_subauth in ACL terminology Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-29[CIFS] named pipe support (part 2)Steve French4-5/+17
Also fixes typo which could cause build break Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-28[CIFS] CIFS support for named pipes (part 1)Steve French5-8/+37
This allows cifs to mount to ipc shares (IPC$) which will allow user space applications to layer over authenticated cifs connections (useful for Wine and others that would want to put DCE/RPC over CIFS or run CIFS named pipes) Acked-by: Rob Shearman <rob@codeweavers.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-28[CIFS] Fix memory leak in statfs to very old serversSteve French2-4/+5
We were allocating request buffers twice in the statfs path when mounted to very old (Windows 9x) servers. Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-25[CIFS] fix cut and paste error - missing defines cause cifsacl build errorSteve French1-1/+8
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-25[CIFS] move cifs acl code to new file and fix build breakSteve French5-109/+137
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-24[CIFS] Support for CIFS ACLs (part 1)Steve French4-8/+143
Add code to be able to dump CIFS ACL information when Query Posix ACL with cifsacl mount parm enabled. Signed-off-by: Shirish Pargoankar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-20[CIFS] fix typo in previous commitSteve French1-1/+1
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-20[CIFS] Print better error when server returns malformed QueryUnixInfo responseSteve French1-0/+3
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-20[CIFS] Add warning message when broken server fails SetFSInfo callSteve French1-1/+10
A reasonably common NAS server returns an error on the SetFSInfo of the Unix capabilities. Log a message for this alerting the user that the server may have problems with the Unix extensions, and telling them what they can do to workaround it. Unfortunately the server does not return other clues that we could easily use to turn the Unix Extension support off automatically in this case (since they claim to support it). Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-17[CIFS] Fallback to standard mkdir if server incorrectly claims support forSteve French2-3/+6
posix ops Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-16[CIFS] fix small memory leak in an error path in new posix mkdirSteve French1-2/+6
There is a small memory leak in fs/cifs/inode.c::cifs_mkdir(). Storage for 'pInfo' is allocated with kzalloc(), but if the call to CIFSPOSIXCreate(...) happens to return 0 and pInfo->Type == -1, then we'll jump to the 'mkdir_get_info' label without freeing the storage allocated for 'pInfo'. This patch adds a kfree() call to free the storage just before jumping to the label, thus getting rid of the leak. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-15[CIFS] missing field in debug output from previous fixSteve French1-1/+2
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-15[CIFS] Fix potential NULL pointer usage if kzalloc failsSteve French2-12/+17
Potential problem was noticed by Cyrill Gorcunov CC: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-15[CIFS] typo in earlier cifs_reconnect fixSteve French1-1/+0
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-13[CIFS] Respect umask when using POSIX mkdirJeff1-0/+1
When making a directory with POSIX mkdir calls, cifs_mkdir does not respect the umask. This patch causes the new POSIX mkdir to create with the right mode Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-11[CIFS] lock inode open file list in close in case racing with openSteve French1-0/+2
Harmless since it only protected turning off caching for the inode, but cleaner to lock around this in case we have a close racing with open. Signed-off-by: Shaggy <shaggy@us.ibm.com> CC: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-07[CIFS] Fix oops in find_writable_fileSteve French1-9/+28
There was a case in which find_writable_file was not waiting long enough under heavy stress when writepages was racing with close of the file handle being used by the write. Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-08-31[CIFS] Fix warnings shown by newer version of sparseSteve French4-37/+32
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-08-30[CIFS] formatting cleanup found by checkpatchSteve French10-105/+80
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-08-30[CIFS] fix for incorrect session reconnectsSteve French1-6/+7
cifs reconnect could end up happening incorrectly due to the small initial tcp recvmsg response. When the socket was within three bytes of being full and the recvmsg returned only 1 to 3 bytes of the initial 4 byte read of the RFC1001 length field. Fortunately this seems to be less common on more current kernels, but this fixes it so cifs tries to retrieve all 4 bytes of the initial tcp read. Signed-off-by: Shirish Pargoankar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
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