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2008-11-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: [CIFS] fix regression in cifs_write_begin/cifs_write_end
2008-11-27udf: Fix BUG_ON() in destroy_inode()Jan Kara
udf_clear_inode() can leave behind buffers on mapping's i_private list (when we truncated preallocation). Call invalidate_inode_buffers() so that the list is properly cleaned-up before we return from udf_clear_inode(). This is ugly and suggest that we should cleanup preallocation earlier than in clear_inode() but currently there's no such call available since drop_inode() is called under inode lock and thus is unusable for disk operations. Signed-off-by: Jan Kara <jack@suse.cz>
2008-11-26[CIFS] fix regression in cifs_write_begin/cifs_write_endJeff Layton
The conversion to write_begin/write_end interfaces had a bug where we were passing a bad parameter to cifs_readpage_worker. Rather than passing the page offset of the start of the write, we needed to pass the offset of the beginning of the page. This was reliably showing up as data corruption in the fsx-linux test from LTP. It also became evident that this code was occasionally doing unnecessary read calls. Optimize those away by using the PG_checked flag to indicate that the unwritten part of the page has been initialized. CC: Nick Piggin <npiggin@suse.de> Acked-by: Dave Kleikamp <shaggy@us.ibm.com> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: [CIFS] Do not attempt to close invalidated file handles [CIFS] fix check for dead tcon in smb_init
2008-11-20[CIFS] Do not attempt to close invalidated file handlesSteve French
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>
2008-11-19hostfs: fix a duplicated global function nameWANG Cong
fs/hostfs/hostfs_user.c defines do_readlink() as non-static, and so does fs/xfs/linux-2.6/xfs_ioctl.c when CONFIG_XFS_DEBUG=y. So rename do_readlink() in hostfs to hostfs_do_readlink(). I think it's better if XFS guys will also rename their do_readlink(), it's not necessary to use such a general name. Signed-off-by: WANG Cong <wangcong@zeuux.org> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-19don't unlink an active swapfileHugh Dickins
Peter Cordes is sorry that he rm'ed his swapfiles while they were in use, he then had no pathname to swapoff. It's a curious little oversight, but not one worth a lot of hackery. Kudos to Willy Tarreau for turning this around from a discussion of synthetic pathnames to how to prevent unlink. Mimic immutable: prohibit unlinking an active swapfile in may_delete() (and don't worry my little head over the tiny race window). Signed-off-by: Hugh Dickins <hugh@veritas.com> Cc: Willy Tarreau <w@1wt.eu> Acked-by: Christoph Hellwig <hch@infradead.org> Cc: Peter Cordes <peter@cordes.ca> Cc: Bodo Eggert <7eggert@gmx.de> Cc: David Newall <davidn@davidnewall.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-19eCryptfs: Allocate up to two scatterlists for crypto ops on keysMichael Halcrow
I have received some reports of out-of-memory errors on some older AMD architectures. These errors are what I would expect to see if crypt_stat->key were split between two separate pages. eCryptfs should not assume that any of the memory sent through virt_to_scatterlist() is all contained in a single page, and so this patch allocates two scatterlist structs instead of one when processing keys. I have received confirmation from one person affected by this bug that this patch resolves the issue for him, and so I am submitting it for inclusion in a future stable release. Note that virt_to_scatterlist() runs sg_init_table() on the scatterlist structs passed to it, so the calls to sg_init_table() in decrypt_passphrase_encrypted_session_key() are redundant. Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com> Reported-by: Paulo J. S. Silva <pjssilva@ime.usp.br> Cc: "Leon Woestenberg" <leon.woestenberg@gmail.com> Cc: Tim Gardner <tim.gardner@canonical.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-18[CIFS] fix check for dead tcon in smb_initSteve French
This was recently changed to check for need_reconnect, but should actually be a check for a tidStatus of CifsExiting. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-18block/md: fix md autodetectionTejun Heo
Block ext devt conversion missed md_autodetect_dev() call in rescan_partitions() leaving md autodetect unable to see partitions. Fix it. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-18block: make add_partition() return pointer to hd_structTejun Heo
Make add_partition() return pointer to the new hd_struct on success and ERR_PTR() value on failure. This change will be used to fix md autodetection bug. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-18block: fix add_partition() error pathTejun Heo
Partition stats structure was not freed on devt allocation failure path. Fix it. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: prevent cifs_writepages() from skipping unwritten pages Fixed parsing of mount options when doing DFS submount [CIFS] Fix check for tcon seal setting and fix oops on failed mount from earlier patch [CIFS] Fix build break cifs: reinstate sharing of tree connections [CIFS] minor cleanup to cifs_mount cifs: reinstate sharing of SMB sessions sans races cifs: disable sharing session and tcon and add new TCP sharing code [CIFS] clean up server protocol handling [CIFS] remove unused list, add new cifs sock list to prepare for mount/umount fix [CIFS] Fix cifs reconnection flags [CIFS] Can't rely on iov length and base when kernel_recvmsg returns error
2008-11-18prevent cifs_writepages() from skipping unwritten pagesDave Kleikamp
Fixes a data corruption under heavy stress in which pages could be left dirty after all open instances of a inode have been closed. In order to write contiguous pages whenever possible, cifs_writepages() asks pagevec_lookup_tag() for more pages than it may write at one time. Normally, it then resets index just past the last page written before calling pagevec_lookup_tag() again. If cifs_writepages() can't write the first page returned, it wasn't resetting index, and the next call to pagevec_lookup_tag() resulted in skipping all of the pages it previously returned, even though cifs_writepages() did nothing with them. This can result in data loss when the file descriptor is about to be closed. This patch ensures that index gets set back to the next returned page so that none get skipped. Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Acked-by: Jeff Layton <jlayton@redhat.com> Cc: Shirish S Pargaonkar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-18Fixed parsing of mount options when doing DFS submountIgor Mammedov
Since these hit the same routines, and are relatively small, it is easier to review them as one patch. Fixed incorrect handling of the last option in some cases Fixed prefixpath handling convert path_consumed into host depended string length (in bytes) Use non default separator if it is provided in the original mount options Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Igor Mammedov <niallain@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-17[CIFS] Fix check for tcon seal setting and fix oops on failed mount from ↵Steve French
earlier patch set tcon->ses earlier If the inital tree connect fails, we'll end up calling cifs_put_smb_ses with a NULL pointer. Fix it by setting the tcon->ses earlier. Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-17[CIFS] Fix build breakSteve French
Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-17cifs: reinstate sharing of tree connectionsJeff Layton
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>
2008-11-16Fix broken ownership of /proc/sys/ filesAl Viro
D'oh... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Reported-and-tested-by: Peter Palfrader <peter@palfrader.org> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-15Fix inotify watch removal/umount racesAl Viro
Inotify watch removals suck violently. To kick the watch out we need (in this order) inode->inotify_mutex and ih->mutex. That's fine if we have a hold on inode; however, for all other cases we need to make damn sure we don't race with umount. We can *NOT* just grab a reference to a watch - inotify_unmount_inodes() will happily sail past it and we'll end with reference to inode potentially outliving its superblock. Ideally we just want to grab an active reference to superblock if we can; that will make sure we won't go into inotify_umount_inodes() until we are done. Cleanup is just deactivate_super(). However, that leaves a messy case - what if we *are* racing with umount() and active references to superblock can't be acquired anymore? We can bump ->s_count, grab ->s_umount, which will almost certainly wait until the superblock is shut down and the watch in question is pining for fjords. That's fine, but there is a problem - we might have hit the window between ->s_active getting to 0 / ->s_count - below S_BIAS (i.e. the moment when superblock is past the point of no return and is heading for shutdown) and the moment when deactivate_super() acquires ->s_umount. We could just do drop_super() yield() and retry, but that's rather antisocial and this stuff is luser-triggerable. OTOH, having grabbed ->s_umount and having found that we'd got there first (i.e. that ->s_root is non-NULL) we know that we won't race with inotify_umount_inodes(). So we could grab a reference to watch and do the rest as above, just with drop_super() instead of deactivate_super(), right? Wrong. We had to drop ih->mutex before we could grab ->s_umount. So the watch could've been gone already. That still can be dealt with - we need to save watch->wd, do idr_find() and compare its result with our pointer. If they match, we either have the damn thing still alive or we'd lost not one but two races at once, the watch had been killed and a new one got created with the same ->wd at the same address. That couldn't have happened in inotify_destroy(), but inotify_rm_wd() could run into that. Still, "new one got created" is not a problem - we have every right to kill it or leave it alone, whatever's more convenient. So we can use idr_find(...) == watch && watch->inode->i_sb == sb as "grab it and kill it" check. If it's been our original watch, we are fine, if it's a newcomer - nevermind, just pretend that we'd won the race and kill the fscker anyway; we are safe since we know that its superblock won't be going away. And yes, this is far beyond mere "not very pretty"; so's the entire concept of inotify to start with. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Greg KH <greg@kroah.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-15[CIFS] minor cleanup to cifs_mountSteve French
Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-14cifs: reinstate sharing of SMB sessions sans racesJeff Layton
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>
2008-11-14cifs: disable sharing session and tcon and add new TCP sharing codeJeff Layton
The code that allows these structs to be shared is extremely racy. Disable the sharing of SMB and tcon structs for now until we can come up with a way to do this that's race free. We want to continue to share TCP sessions, however since they are required for multiuser mounts. For that, implement a new (hopefully race-free) scheme. Add a new global list of TCP sessions, and take care to get a reference to it whenever we're dealing with one. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-14[CIFS] clean up server protocol handlingSteve French
We're currently declaring both a sockaddr_in and sockaddr6_in on the stack, but we really only need storage for one of them. Declare a sockaddr struct and cast it to the proper type. Also, eliminate the protocolType field in the TCP_Server_Info struct. It's redundant since we have a sa_family field in the sockaddr anyway. We may need to revisit this if SCTP is ever implemented, but for now this will simplify the code. CIFS over IPv6 also has a number of problems currently. This fixes all of them that I found. Eventually, it would be nice to move more of the code to be protocol independent, but this is a start. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-13[CIFS] remove unused list, add new cifs sock list to prepare for ↵Steve French
mount/umount fix Also adds two lines missing from the previous patch (for the need reconnect flag in the /proc/fs/cifs/DebugData handling) The new global_cifs_sock_list is added, and initialized in init_cifs but not used yet. Jeff Layton will be adding code in to use that and to remove the GlobalTcon and GlobalSMBSession lists. CC: Jeff Layton <jlayton@redhat.com> CC: Shirish Pargaonkar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-13Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm: dlm: fix shutdown cleanup
2008-11-13[CIFS] Fix cifs reconnection flagsSteve French
In preparation for Jeff's big umount/mount fixes to remove the possibility of various races in cifs mount and linked list handling of sessions, sockets and tree connections, this patch cleans up some repetitive code in cifs_mount, and addresses a problem with ses->status and tcon->tidStatus in which we were overloading the "need_reconnect" state with other status in that field. So the "need_reconnect" flag has been broken out from those two state fields (need reconnect was not mutually exclusive from some of the other possible tid and ses states). In addition, a few exit cases in cifs_mount were cleaned up, and a problem with a tcon flag (for lease support) was not being set consistently for the 2nd mount of the same share CC: Jeff Layton <jlayton@redhat.com> CC: Shirish Pargaonkar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-13dlm: fix shutdown cleanupDavid Teigland
Fixes a regression from commit 0f8e0d9a317406612700426fad3efab0b7bbc467, "dlm: allow multiple lockspace creates". An extraneous 'else' slipped into a code fragment being moved from release_lockspace() to dlm_release_lockspace(). The result of the unwanted 'else' is that dlm threads and structures are not stopped and cleaned up when the final dlm lockspace is removed. Trying to create a new lockspace again afterward will fail with "kmem_cache_create: duplicate cache dlm_conn" because the cache was not previously destroyed. Signed-off-by: David Teigland <teigland@redhat.com>
2008-11-12ext3: Clean up outdated and incorrect comment for ext3_write_super()Theodore Tso
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-12vfs: fix shrink_submountsEric W. Biederman
In the last refactoring of shrink_submounts a variable was not completely renamed. So finish the renaming of mnt to m now. Without this if you attempt to mount an nfs mount that has both automatic nfs sub mounts on it, and has normal mounts on it. The unmount will succeed when it should not. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Alexey Dobriyan <adobriyan@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>
2008-11-11Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfsLinus Torvalds
* 'for-linus' of git://oss.sgi.com/xfs/xfs: [XFS] XFS: Check for valid transaction headers in recovery [XFS] handle memory allocation failures during log initialisation [XFS] Account for allocated blocks when expanding directories [XFS] Wait for all I/O on truncate to zero file size [XFS] Fix use-after-free with log and quotas
2008-11-10ocfs2: Check search result in ocfs2_xattr_block_get()Tiger Yang
ocfs2_xattr_block_get() calls ocfs2_xattr_search() to find an external xattr, but doesn't check the search result that is passed back via struct ocfs2_xattr_search. Add a check for search result, and pass back -ENODATA if the xattr search failed. This avoids a later NULL pointer error. Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-11-10ocfs2: fix printk related build warnings in xattr.cMark Fasheh
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-11-10ocfs2: truncate outstanding block after direct io failureDmitri Monakhov
Signed-off-by: Dmitri Monakhov <dmonakhov@openvz.org> Cc: Jeff Moyer <jmoyer@redhat.com> Cc: Mark Fasheh <mark.fasheh@oracle.com> Cc: Joel Becker <Joel.Becker@oracle.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-11-10ocfs2/xattr: Proper hash collision handle in bucket divisionTao Ma
In ocfs2/xattr, we must make sure the xattrs which have the same hash value exist in the same bucket so that the search schema can work. But in the old implementation, when we want to extend a bucket, we just move half number of xattrs to the new bucket. This works in most cases, but if we are lucky enough we will move 2 xattrs into 2 different buckets. This means that an xattr from the previous bucket cannot be found anymore. This patch fix this problem by finding the right position during extending the bucket and extend an empty bucket if needed. Signed-off-by: Tao Ma <tao.ma@oracle.com> Cc: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-11-10ocfs2: return 0 in page_mkwrite to let VFS retry.Tao Ma
In ocfs2_page_mkwrite, we return -EINVAL when we found the page mapping isn't updated, and it will cause the user space program get SIGBUS and exit. The reason is that during race writeable mmap, we will do unmap_mapping_range in ocfs2_data_downconvert_worker. The good thing is that if we reuturn 0 in page_mkwrite, VFS will retry fault and then call page_mkwrite again, so it is safe to return 0 here. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-11-10ocfs2: Set journal descriptor to NULL after journal shutdownSunil Mushran
Patch sets journal descriptor to NULL after the journal is shutdown. This ensures that jbd2_journal_release_jbd_inode(), which removes the jbd2 inode from txn lists, can be called safely from ocfs2_clear_inode() even after the journal has been shutdown. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-11-10ocfs2: Fix check of return value of ocfs2_start_trans() in xattr.c.Tao Ma
On failure, ocfs2_start_trans() returns values like ERR_PTR(-ENOMEM), so we should check whether handle is NULL. Fix them to use IS_ERR(). Jan has made the patch for other part in ocfs2(thank Jan for it), so this is just the fix for fs/ocfs2/xattr.c. Signed-off-by: Tao Ma <tao.ma@oracle.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-11-10ocfs2: Let inode be really deleted when ocfs2_mknod_locked() failsJan Kara
We forgot to set i_nlink to 0 when returning due to error from ocfs2_mknod_locked() and thus inode was not properly released via ocfs2_delete_inode() (e.g. claimed space was not released). Fix it. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-11-10ocfs2: Fix checking of return value of new_inode()Jan Kara
new_inode() does not return ERR_PTR() but NULL in case of failure. Correct checking of the return value. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-11-10ocfs2: Fix check of return value of ocfs2_start_trans()Jan Kara
On failure, ocfs2_start_trans() returns values like ERR_PTR(-ENOMEM). Thus checks for !handle are wrong. Fix them to use IS_ERR(). Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-11-10ocfs2: Fix some typos in xattr annotations.Tao Ma
Fix some typos in the xattr annotations. Signed-off-by: Tao Ma <tao.ma@oracle.com> Reported-by: Coly Li <coyli@suse.de> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-11-10ocfs2: Remove unused ocfs2_restore_xattr_block().Tao Ma
Since now ocfs2 supports empty xattr buckets, we will never remove the xattr index tree even if all the xattrs are removed, so this function will never be called. So remove it. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-11-10ocfs2: Don't repeat ocfs2_xattr_block_find()Joel Becker
ocfs2_xattr_block_get() looks up the xattr in a startlingly familiar way; it's identical to the function ocfs2_xattr_block_find(). Let's just use the later in the former. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-11-10ocfs2: Specify appropriate journal access for new xattr buckets.Joel Becker
There are a couple places that get an xattr bucket that may be reading an existing one or may be allocating a new one. They should specify the correct journal access mode depending. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-11-10ocfs2: Check errors from ocfs2_xattr_update_xattr_search()Joel Becker
The ocfs2_xattr_update_xattr_search() function can return an error when trying to read blocks off of disk. The caller needs to check this error before using those (possibly invalid) blocks. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-11-10ocfs2: Don't return -EFAULT from a corrupt xattr entry.Joel Becker
If the xattr disk structures are corrupt, return -EIO, not -EFAULT. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-11-10ocfs2: Check xattr block signatures properly.Joel Becker
The xattr.c code is currently memcmp()ing naking buffer pointers. Create the OCFS2_IS_VALID_XATTR_BLOCK() macro to match its peers and use that. In addition, failed signature checks were returning -EFAULT, which is completely wrong. Return -EIO. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-11-10ocfs2: add handler_map array bounds checkingTiger Yang
Make the handler_map array as large as the possible value range to avoid a fencepost error. [ Utilize alternate method -- Joel ] Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-11-10ocfs2: remove duplicate definition in xattrTiger Yang
Include/linux/xattr.h already has the definition about xattr prefix, so remove the duplicate definitions in xattr.c. Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>