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2010-04-21[CIFS] Neaten cERROR and cFYI macros, reduce text spaceJoe Perches1-41/+40
Neaten cERROR and cFYI macros, reduce text space ~2.5K Convert '__FILE__ ": " fmt' to '"%s: " fmt', __FILE__' to save text space Surround macros with do {} while Add parentheses to macros Make statement expression macro from macro with assign Remove now unnecessary parentheses from cFYI and cERROR uses defconfig with CIFS support old $ size fs/cifs/built-in.o text data bss dec hex filename 156012 1760 148 157920 268e0 fs/cifs/built-in.o defconfig with CIFS support old $ size fs/cifs/built-in.o text data bss dec hex filename 153508 1760 148 155416 25f18 fs/cifs/built-in.o allyesconfig old: $ size fs/cifs/built-in.o text data bss dec hex filename 309138 3864 74824 387826 5eaf2 fs/cifs/built-in.o allyesconfig new $ size fs/cifs/built-in.o text data bss dec hex filename 305655 3864 74824 384343 5dd57 fs/cifs/built-in.o Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-02-25[CIFS] pSesInfo->sesSem is used as mutex. Rename it to session_mutex andSteve French1-1/+1
convert it to a real mutex. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-11-16cifs: clear server inode number flag while autodisablingSuresh Jayaraman1-1/+1
Fix the commit ec06aedd44 that intended to turn off querying for server inode numbers when server doesn't consistently support inode numbers. Presumably the commit didn't actually clear the CIFS_MOUNT_SERVER_INUM flag, perhaps a typo. Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de> Acked-by: Jeff Layton <jlayton@redhat.com> Cc: Stable <stable@kernel.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-11-06cifs: clean up handling when server doesn't consistently support inode numbersJeff Layton1-0/+14
It's possible that a server will return a valid FileID when we query the FILE_INTERNAL_INFO for the root inode, but then zeroed out inode numbers when we do a FindFile with an infolevel of SMB_FIND_FILE_ID_FULL_DIR_INFO. In this situation turn off querying for server inode numbers, generate a warning for the user and just generate an inode number using iunique. Once we generate any inode number with iunique we can no longer use any server inode numbers or we risk collisions, so ensure that we don't do that in cifs_get_inode_info either. Cc: Stable <stable@kernel.org> Reported-by: Timothy Normand Miller <theosib@gmail.com> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-09-24cifs: convert oplock breaks to use slow_work facility (try #4)Jeff Layton1-9/+20
This is the fourth respin of the patch to convert oplock breaks to use the slow_work facility. A customer of ours was testing a backport of one of the earlier patchsets, and hit a "Busy inodes after umount..." problem. An oplock break job had raced with a umount, and the superblock got torn down and its memory reused. When the oplock break job tried to dereference the inode->i_sb, the kernel oopsed. This patchset has the oplock break job hold an inode and vfsmount reference until the oplock break completes. With this, there should be no need to take a tcon reference (the vfsmount implicitly holds one already). Currently, when an oplock break comes in there's a chance that the oplock break job won't occur if the allocation of the oplock_q_entry fails. There are also some rather nasty races in the allocation and handling these structs. Rather than allocating oplock queue entries when an oplock break comes in, add a few extra fields to the cifsFileInfo struct. Get rid of the dedicated cifs_oplock_thread as well and queue the oplock break job to the slow_work thread pool. This approach also has the advantage that the oplock break jobs can potentially run in parallel rather than be serialized like they are today. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-09-15cifs: take read lock on GlobalSMBSes_lock in is_valid_oplock_breakJeff Layton1-3/+3
...rather than a write lock. It doesn't change the list so a read lock should be sufficient. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-09-15cifs: remove cifsInodeInfo.oplockPending flagJeff Layton1-1/+0
It's set on oplock break but nothing ever looks at it. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-04-30cifs: change cifs_get_name_from_search_buf to use new unicode helperJeff Layton1-60/+0
...and remove cifs_convertUCSpath. There are no more callers. Also add a #define for the buffer used in the readdir path so that we don't have so many magic numbers floating around. Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-04-30cifs: move #defines for mapchars into cifs_unicode.hJeff Layton1-11/+0
Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-12-28Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds1-1/+8
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: (31 commits) [CIFS] Remove redundant test [CIFS] make sure that DFS pathnames are properly formed Remove an already-checked error condition in SendReceiveBlockingLock Streamline SendReceiveBlockingLock: Use "goto out:" in an error condition Streamline SendReceiveBlockingLock: Use "goto out:" in an error condition [CIFS] Streamline SendReceive[2] by using "goto out:" in an error condition Slightly streamline SendReceive[2] Check the return value of cifs_sign_smb[2] [CIFS] Cleanup: Move the check for too large R/W requests [CIFS] Slightly simplify wait_for_free_request(), remove an unnecessary "else" branch Simplify allocate_mid() slightly: Remove some unnecessary "else" branches [CIFS] In SendReceive, move consistency check out of the mutexed region cifs: store password in tcon cifs: have calc_lanman_hash take more granular args cifs: zero out session password before freeing it cifs: fix wait_for_response to time out sleeping processes correctly [CIFS] Can not mount with prefixpath if root directory of share is inaccessible [CIFS] various minor cleanups pointed out by checkpatch script [CIFS] fix typo [CIFS] remove sparse warning ... Fix trivial conflict in fs/cifs/cifs_fs_sb.h due to comment changes for the CIFS_MOUNT_xyz bit definitions between cifs updates and security updates.
2008-12-26cifs: store password in tconJeff Layton1-0/+4
cifs: store password in tcon Each tcon has its own password for share-level security. Store it in the tcon and wipe it clean and free it when freeing the tcon. When doing the tree connect with share-level security, use the tcon password instead of the session password. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-12-26cifs: zero out session password before freeing itJeff Layton1-1/+4
cifs: zero out session password before freeing it ...just to be on the safe side. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-12-04Merge branch 'master' into nextJames Morris1-0/+3
Conflicts: fs/nfsd/nfs4recover.c Manually fixed above to use new creds API functions, e.g. nfs4_save_creds(). Signed-off-by: James Morris <jmorris@namei.org>
2008-11-20[CIFS] Do not attempt to close invalidated file handlesSteve French1-0/+3
If a connection with open file handles has gone down and come back up and reconnected without reopening the file handle yet, do not attempt to send an SMB close request for this handle in cifs_close. We were checking for the connection being invalid in cifs_close but since the connection may have been reconnected we also need to check whether the file handle was marked invalid (otherwise we could close the wrong file handle by accident). Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-18Merge branch 'master' into nextJames Morris1-49/+41
Conflicts: fs/cifs/misc.c Merge to resolve above, per the patch below. Signed-off-by: James Morris <jmorris@namei.org> diff --cc fs/cifs/misc.c index ec36410,addd1dc..0000000 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@@ -347,13 -338,13 +338,13 @@@ header_assemble(struct smb_hdr *buffer /* BB Add support for establishing new tCon and SMB Session */ /* with userid/password pairs found on the smb session */ /* for other target tcp/ip addresses BB */ - if (current->fsuid != treeCon->ses->linux_uid) { + if (current_fsuid() != treeCon->ses->linux_uid) { cFYI(1, ("Multiuser mode and UID " "did not match tcon uid")); - read_lock(&GlobalSMBSeslock); - list_for_each(temp_item, &GlobalSMBSessionList) { - ses = list_entry(temp_item, struct cifsSesInfo, cifsSessionList); + read_lock(&cifs_tcp_ses_lock); + list_for_each(temp_item, &treeCon->ses->server->smb_ses_list) { + ses = list_entry(temp_item, struct cifsSesInfo, smb_ses_list); - if (ses->linux_uid == current->fsuid) { + if (ses->linux_uid == current_fsuid()) { if (ses->server == treeCon->ses->server) { cFYI(1, ("found matching uid substitute right smb_uid")); buffer->Uid = ses->Suid;
2008-11-17cifs: reinstate sharing of tree connectionsJeff Layton1-39/+35
Use a similar approach to the SMB session sharing. Add a list of tcons attached to each SMB session. Move the refcount to non-atomic. Protect all of the above with the cifs_tcp_ses_lock. Add functions to properly find and put references to the tcons. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-14cifs: reinstate sharing of SMB sessions sans racesJeff Layton1-10/+6
We do this by abandoning the global list of SMB sessions and instead moving to a per-server list. This entails adding a new list head to the TCP_Server_Info struct. The refcounting for the cifsSesInfo is moved to a non-atomic variable. We have to protect it by a lock anyway, so there's no benefit to making it an atomic. The list and refcount are protected by the global cifs_tcp_ses_lock. The patch also adds a new routines to find and put SMB sessions and that properly take and put references under the lock. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-14CRED: Wrap task credential accesses in the CIFS filesystemDavid Howells1-2/+2
Wrap access to task credentials so that they can be separated more easily from the task_struct during the introduction of COW creds. Change most current->(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id(). Change some task->e?[ug]id to task_e?[ug]id(). In some places it makes more sense to use RCU directly rather than a convenient wrapper; these will be addressed by later patches. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: James Morris <jmorris@namei.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Cc: Steve French <sfrench@samba.org> Cc: linux-cifs-client@lists.samba.org Signed-off-by: James Morris <jmorris@namei.org>
2008-10-12[CIFS] cifs: remove pointless lock and unlock of GlobalMid_Lock in ↵Jeff Layton1-2/+0
header_assemble We lock GlobalMid_Lock in header_assemble and then immediately unlock it again without doing anything. Not sure what this was intended to do, but remove it. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-09-22cifs: don't use GFP_KERNEL with GFP_NOFSPekka Enberg1-4/+2
GFP_KERNEL and GFP_NOFS are mutually exclusive. If you combine them, you end up with plain GFP_KERNEL which can deadlock in cases where you really want GFP_NOFS. Cc: Steve French <sfrench@samba.org> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-05-23[CIFS] remove unused variablesSteve French1-2/+1
CC: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-04-29[CIFS] convert usage of implicit booleans to boolSteve French1-16/+17
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-02-07[CIFS] reduce checkpatch warningsSteve French1-6/+8
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-25[CIFS] acl support part 6Steve French1-5/+5
Acked-by: Shirish Pargaonkar <shirishp@us.ibm.com> CC: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-28[CIFS] CIFS support for named pipes (part 1)Steve French1-1/+0
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>
2007-07-17[CIFS] More whitespace/formatting fixes (noticed by checkpatch)Steve French1-5/+10
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-13[CIFS] whitespace/formatting fixesSteve French1-5/+7
This should be the last big batch of whitespace/formatting fixes. checkpatch warnings for the cifs directory are down about 90% and many of the remaining ones are harder to remove or make the code harder to read. Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-10[CIFS] whitespace cleanupSteve French1-74/+76
More than halfway there Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-07[CIFS] more whitespace cleanupSteve French1-32/+32
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-01-21[CIFS] Remove 2 unneeded kzalloc castsSteve French1-6/+2
Signed-off-by: Ahmed Darwish <darwish.07@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2006-12-07[PATCH] slab: remove SLAB_KERNELChristoph Lameter1-2/+2
SLAB_KERNEL is an alias of GFP_KERNEL. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] slab: remove SLAB_NOFSChristoph Lameter1-2/+2
SLAB_NOFS is an alias of GFP_NOFS. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-12[CIFS] Workaround incomplete byte length returned by someSteve French1-13/+29
servers on small SMB responses Signed-off-by: Steve French <sfrench@us.ibm.com>
2006-09-28[CIFS] Remove static and unused symbolsSteve French1-1/+1
Most cases of the ones found by Shaggy by "make namespacecheck" could be removed or made static Ack: Dave Kleikamp <shaggy@austin.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2006-05-31[CIFS] Support for setting up SMB sessions to legacy lanman serversSteve French1-4/+6
2006-03-03[CIFS] Fix slow oplock break response when mounts to differentSteve French1-2/+2
servers have same tid and we try to match oplock break to wrong tid. Signed-off-by: Steve French <sfrench@us.ibm.com>
2006-03-02[CIFS] Move noisy debug message (triggerred by some older servers) fromSteve French1-5/+8
error to informational unless frame is rejected. Signed-off-by: Steve French <sfrench@us.ibm.com>
2006-02-24[CIFS] Fix large (ie over 64K for MaxCIFSBufSize) buffer case for wrappingSteve French1-11/+16
bcc on read response and for wrapping sessionsetup maxbufsize field Signed-off-by: Steve French <sfrench@us.ibm.com>
2006-02-21[CIFS] Convert remaining places in fs/cifs fromEric Sesterhenn1-4/+2
kmalloc/memset to simpler kzalloc usage Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
2005-12-12[CIFS] Avoid extra large buffer allocation (and memcpy) in cifs_readpagesSteve French1-1/+1
Signed-off-by: Steve French <sfrench@us.ibm.com>
2005-12-03[CIFS] Add extended stats (STATS2) for total buffer allocations forSteve French1-0/+7
better performance debugging. Signed-off-by: Steve French <sfrench@us.ibm.com>
2005-12-01[CIFS] Use fsuid (fsgid) more consistently instead of uid/gid inSteve French1-4/+4
assembling smb requests when setuids and Linux protocol extensions enabled and in checking more matching sessions in multiuser mount mode. Pointed out by Shaggy. Signed-off-by: Steve French <sfrench@us.ibm.com>
2005-11-29[CIFS] Fix umount --force to wake up the pending response queue, not justSteve French1-5/+12
the request queue. Also periodically wakeup response_q so threads can check if stuck requests have timed out. Workaround Windows server illegal smb length on transact2 findfirst response. Signed-off-by: Steve French <sfrench@us.ibm.com>
2005-11-11[CIFS] Cleanup sparse warnings for unicode little endian castsSteve French1-1/+1
Following Shaggy's suggestion, do a better job on the unicode string handling routines in cifs in specifying that the wchar_t are really little endian widechars (__le16). Signed-off-by: Steve French <sfrench@us.ibm.com>
2005-11-07[PATCH] kfree cleanup: fsJesper Juhl1-10/+5
This is the fs/ part of the big kfree cleanup patch. Remove pointless checks for NULL prior to calling kfree() in fs/. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-10[CIFS] Fix byte range locking to Windows when Windows server returnsSteve French1-7/+15
illegal RFC1001 length (which had caused the lock to block forever until killed).
2005-09-22[CIFS] Various minor bigendian fixes and sparse level 2 warning message fixesSteve French1-5/+7
Most important of these fixes mapchars on bigendian and a few statfs fields Signed-off-by: Shaggy (shaggy@austin.ibm.com) Signed-off-by: Steve French (sfrench@us.ibm.com)
2005-09-21[CIFS] Add support for legacy servers part nine. statfs (df and du) is nowSteve French1-2/+1
functional, and the length check is fixed so readdir does not throw a warning message when windows me messes up the response to FindFirst of an empty dir (with only . and ..). Signed-off-by: Steve French (sfrench@us.ibm.com)
2005-08-24CIFS: Reduce CONFIG_CIFS_STATS ifdefsSteve French1-3/+1
Make cifs_stats code conditional in the header files to avoid ifdefs in the main code. Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2005-08-19[CIFS] Finish cifs mount option which requests case insensitive pathSteve French1-0/+2
name matching. Signed-off-by: Steve French (sfrench@us.ibm.com)
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