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2014-12-08Update modinfo cifs version for cifs.koSteve French1-1/+1
update cifs version to 2.06 Signed-off-by: Steve French <smfrench@gmail.com>
2014-09-16Update version number displayed by modinfo for cifs.koSteve French1-1/+1
Update cifs.ko version to 2.05 Signed-off-by: Steve French <smfrench@gmail.com>w
2014-08-11Merge branch 'for-linus' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs updates from Al Viro: "Stuff in here: - acct.c fixes and general rework of mnt_pin mechanism. That allows to go for delayed-mntput stuff, which will permit mntput() on deep stack without worrying about stack overflows - fs shutdown will happen on shallow stack. IOW, we can do Eric's umount-on-rmdir series without introducing tons of stack overflows on new mntput() call chains it introduces. - Bruce's d_splice_alias() patches - more Miklos' rename() stuff. - a couple of regression fixes (stable fodder, in the end of branch) and a fix for API idiocy in iov_iter.c. There definitely will be another pile, maybe even two. I'd like to get Eric's series in this time, but even if we miss it, it'll go right in the beginning of for-next in the next cycle - the tricky part of prereqs is in this pile" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (40 commits) fix copy_tree() regression __generic_file_write_iter(): fix handling of sync error after DIO switch iov_iter_get_pages() to passing maximal number of pages fs: mark __d_obtain_alias static dcache: d_splice_alias should detect loops exportfs: update Exporting documentation dcache: d_find_alias needn't recheck IS_ROOT && DCACHE_DISCONNECTED dcache: remove unused d_find_alias parameter dcache: d_obtain_alias callers don't all want DISCONNECTED dcache: d_splice_alias should ignore DCACHE_DISCONNECTED dcache: d_splice_alias mustn't create directory aliases dcache: close d_move race in d_splice_alias dcache: move d_splice_alias namei: trivial fix to vfs_rename_dir comment VFS: allow ->d_manage() to declare -EISDIR in rcu_walk mode. cifs: support RENAME_NOREPLACE hostfs: support rename flags shmem: support RENAME_EXCHANGE shmem: support RENAME_NOREPLACE btrfs: add RENAME_NOREPLACE ...
2014-08-07cifs: support RENAME_NOREPLACEMiklos Szeredi1-2/+2
This flag gives CIFS the ability to support its native rename semantics. Implementation is simple: just bail out before trying to hack around the noreplace semantics. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Cc: Steve French <smfrench@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-08-02Update cifs versionSteve French1-1/+1
to 2.04 Signed-off-by: Steve French <smfrench@gmail.com>
2014-06-12Merge branch 'for-linus' of ↵Linus Torvalds1-8/+4
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs updates from Al Viro: "This the bunch that sat in -next + lock_parent() fix. This is the minimal set; there's more pending stuff. In particular, I really hope to get acct.c fixes merged this cycle - we need that to deal sanely with delayed-mntput stuff. In the next pile, hopefully - that series is fairly short and localized (kernel/acct.c, fs/super.c and fs/namespace.c). In this pile: more iov_iter work. Most of prereqs for ->splice_write with sane locking order are there and Kent's dio rewrite would also fit nicely on top of this pile" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (70 commits) lock_parent: don't step on stale ->d_parent of all-but-freed one kill generic_file_splice_write() ceph: switch to iter_file_splice_write() shmem: switch to iter_file_splice_write() nfs: switch to iter_splice_write_file() fs/splice.c: remove unneeded exports ocfs2: switch to iter_file_splice_write() ->splice_write() via ->write_iter() bio_vec-backed iov_iter optimize copy_page_{to,from}_iter() bury generic_file_aio_{read,write} lustre: get rid of messing with iovecs ceph: switch to ->write_iter() ceph_sync_direct_write: stop poking into iov_iter guts ceph_sync_read: stop poking into iov_iter guts new helper: copy_page_from_iter() fuse: switch to ->write_iter() btrfs: switch to ->write_iter() ocfs2: switch to ->write_iter() xfs: switch to ->write_iter() ...
2014-05-21Update cifs version number to 2.03Steve French1-1/+1
Signed-off-by: Steve French <smfrench@gmail.com>
2014-05-21cifs: fix potential races in cifs_revalidate_mappingJeff Layton1-0/+1
The handling of the CIFS_INO_INVALID_MAPPING flag is racy. It's possible for two tasks to attempt to revalidate the mapping at the same time. The first sees that CIFS_INO_INVALID_MAPPING is set. It clears the flag and then calls invalidate_inode_pages2 to start shooting down the pagecache. While that's going on, another task checks the flag and sees that it's clear. It then ends up trusting the pagecache to satisfy a read when it shouldn't. Fix this by adding a bitlock to ensure that the clearing of the flag is atomic with respect to the actual cache invalidation. Also, move the other existing users of cifs_invalidate_mapping to use a new cifs_zap_mapping() function that just sets the INVALID_MAPPING bit and then uses the standard codepath to handle the invalidation. Signed-off-by: Jeff Layton <jlayton@poochiereds.net> Signed-off-by: Steve French <smfrench@gmail.com>
2014-05-21cifs: new helper function: cifs_revalidate_mappingJeff Layton1-0/+1
Consolidate a bit of code. In a later patch we'll expand this to fix some races. Signed-off-by: Jeff Layton <jlayton@poochiereds.net> Signed-off-by: Steve French <smfrench@gmail.com>
2014-05-21cifs: fix cifs_uniqueid_to_ino_t not to ever return 0Jeff Layton1-5/+13
Currently, when the top and bottom 32-bit words are equivalent and the host is a 32-bit arch, cifs_uniqueid_to_ino_t returns 0 as the ino_t value. All we're doing to hash the value down to 32 bits is xor'ing the top and bottom 32-bit words and that obviously results in 0 if they are equivalent. The kernel doesn't really care if it returns this value, but some userland apps (like "ls") will ignore dirents that have a zero d_ino value. Change this function to use hash_64 to convert this value to a 31 bit value and then add 1 to ensure that it doesn't ever return 0. Also, there's no need to check the sizeof(ino_t) at runtime so create two different cifs_uniqueid_to_ino_t functions based on whether BITS_PER_LONG is 64 for not. This should fix: https://bugzilla.kernel.org/show_bug.cgi?id=19282 Reported-by: Eric <copet_eric@emc.com> Reported-by: <per-ola@sadata.se> Signed-off-by: Jeff Layton <jlayton@poochiereds.net> Signed-off-by: Steve French <smfrench@gmail.com>
2014-05-07cifs: switch to ->write_iter()Al Viro1-4/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-05-07cifs: switch to ->read_iter()Al Viro1-4/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25new helper: kfree_put_link()Al Viro1-2/+0
duplicated to hell and back... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-09-26[CIFS] update cifs.ko versionSteve French1-1/+1
To 2.02 Signed-off-by: Steve French <smfrench@gmail.com>
2013-07-04Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6Linus Torvalds1-1/+1
Pull cifs updates from Steve French: "Various CIFS/SMB2/SMB3 updates for 3.11. Includes bug fixes - SMB3 support should be much more stable with key DFS fix and also signing possible now (although is more work to do to get SMB3 signing working well with multiuser). Mounts using the new SMB 3.02 dialect can now be done (specify "vers=3.02" on mount) against the most current Microsoft systems. Also includes a big cleanup of the cifs/smb2/smb3 authentication code from Jeff which fixes some long standing problems with the way allowed authentication flavors and signing are configured. Some followon patches later in the cycle will clean up allocation of structures for the various security mechanisms depending on what dialect is chosen (reduces memory usage a little) and to add support for the secure negotiate fsctl (for smb3) which prevents downgrade attacks." * 'for-next' of git://git.samba.org/sfrench/cifs-2.6: (39 commits) cifs: fill TRANS2_QUERY_FILE_INFO ByteCount fields cifs: fix SMB2 signing enablement in cifs_enable_signing [CIFS] Fix build warning [CIFS] SMB3 Signing enablement [CIFS] Do not set DFS flag on SMB2 open [CIFS] fix static checker warning cifs: try to handle the MUST SecurityFlags sanely When server doesn't provide SecurityBuffer on SMB2Negotiate pick default Handle big endianness in NTLM (ntlmv2) authentication revalidate directories instiantiated via FIND_* in order to handle DFS referrals SMB2 FSCTL and IOCTL worker function Charge at least one credit, if server says that it supports multicredit Remove typo Some missing share flags cifs: using strlcpy instead of strncpy Update headers to update various SMB3 ioctl definitions Update cifs version number Add ability to dipslay SMB3 share flags and capabilities for debugging Add some missing SMB3 and SMB3.02 flags Add SMB3.02 dialect support ...
2013-06-29[readdir] convert cifsAl Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-06-24Update cifs version numberSteve French1-1/+1
More than 160 fixes since we last bumped the version number of cifs.ko. Update to version 2.01 so it is easier in modinfo to tell that fixes are in. Signed-off-by: Steve French <smfrench@gmail.com>
2013-03-13cifs: delay super block destruction until all cifsFileInfo objects are goneMateusz Guzik1-0/+4
cifsFileInfo objects hold references to dentries and it is possible that these will still be around in workqueues when VFS decides to kill super block during unmount. This results in panics like this one: BUG: Dentry ffff88001f5e76c0{i=66b4a,n=1M-2} still in use (1) [unmount of cifs cifs] ------------[ cut here ]------------ kernel BUG at fs/dcache.c:943! [..] Process umount (pid: 1781, threadinfo ffff88003d6e8000, task ffff880035eeaec0) [..] Call Trace: [<ffffffff811b44f3>] shrink_dcache_for_umount+0x33/0x60 [<ffffffff8119f7fc>] generic_shutdown_super+0x2c/0xe0 [<ffffffff8119f946>] kill_anon_super+0x16/0x30 [<ffffffffa036623a>] cifs_kill_sb+0x1a/0x30 [cifs] [<ffffffff8119fcc7>] deactivate_locked_super+0x57/0x80 [<ffffffff811a085e>] deactivate_super+0x4e/0x70 [<ffffffff811bb417>] mntput_no_expire+0xd7/0x130 [<ffffffff811bc30c>] sys_umount+0x9c/0x3c0 [<ffffffff81657c19>] system_call_fastpath+0x16/0x1b Fix this by making each cifsFileInfo object hold a reference to cifs super block, which implicitly keeps VFS super block around as well. Signed-off-by: Mateusz Guzik <mguzik@redhat.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Cc: <stable@vger.kernel.org> Reported-and-Tested-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-09-25Update cifs version numberSteve French1-1/+1
With SMB2 support, update from version 1.79 to 2.0 to make it easier for users to recognize which version has SMB2 support. Signed-off-by: Steve French <sfrench@us.ibm.com> Reviewed-by: Jeff Layton <jlayton@redhat.com>
2012-07-14don't pass nameidata to ->create()Al Viro1-1/+1
boolean "does it have to be exclusive?" flag is passed instead; Local filesystem should just ignore it - the object is guaranteed not to be there yet. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-07-14stop passing nameidata to ->lookup()Al Viro1-1/+1
Just the flags; only NFS cares even about that, but there are legitimate uses for such argument. And getting rid of that completely would require splitting ->lookup() into a couple of methods (at least), so let's leave that alone for now... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-07-14kill struct opendataAl Viro1-1/+1
Just pass struct file *. Methods are happier that way... There's no need to return struct file * from finish_open() now, so let it return int. Next: saner prototypes for parts in namei.c Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-07-14make ->atomic_open() return intAl Viro1-3/+3
Change of calling conventions: old new NULL 1 file 0 ERR_PTR(-ve) -ve Caller *knows* that struct file *; no need to return it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-07-14->atomic_open() prototype change - pass int * instead of bool *Al Viro1-1/+1
... and let finish_open() report having opened the file via that sucker. Next step: don't modify od->filp at all. [AV: FILE_CREATE was already used by cifs; Miklos' fix folded] Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-07-14cifs: implement i_op->atomic_open()Miklos Szeredi1-0/+3
Add an ->atomic_open implementation which replaces the atomic lookup+open+create operation implemented via ->lookup and ->create operations. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> CC: Steve French <sfrench@samba.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-05-03[CIFS] Update cifs version to 1.78Steve French1-1/+1
Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-03-27[CIFS] Update CIFS version number to 1.77Steve French1-1/+1
Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-01-04switch ->mknod() to umode_tAl Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-04switch ->create() to umode_tAl Viro1-1/+1
vfs_create() ignores everything outside of 16bit subset of its mode argument; switching it to umode_t is obviously equivalent and it's the only caller of the method Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-04switch vfs_mkdir() and ->mkdir() to umode_tAl Viro1-1/+1
vfs_mkdir() gets int, but immediately drops everything that might not fit into umode_t and that's the only caller of ->mkdir()... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-10-28[CIFS] Update cifs version to 1.76Steve French1-1/+1
Update cifs version to 1.76 now that async read, lock caching, and changes to oplock enabled interface are in. Thanks to Pavel for reminding me. Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2011-10-13cifs: Fix typo 'CIFS_NFSD_EXPORT'Paul Bolle1-2/+2
It should be 'CONFIG_CIFS_NFSD_EXPORT'. No-one noticed because that symbol depends on BROKEN. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Steve French <smfrench@gmail.com>
2011-08-18update cifs version to 1.75Steve French1-1/+1
Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-08-01cifs: simplify refcounting for oplock breaksJeff Layton1-4/+0
Currently, we take a sb->s_active reference and a cifsFileInfo reference when an oplock break workqueue job is queued. This is unnecessary and more complicated than it needs to be. Also as Al points out, deactivate_super has non-trivial locking implications so it's best to avoid that if we can. Instead, just cancel any pending oplock breaks for this filehandle synchronously in cifsFileInfo_put after taking it off the lists. That should ensure that this job doesn't outlive the structures it depends on. Reported-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-07-21fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlersJosef Bacik1-2/+2
Btrfs needs to be able to control how filemap_write_and_wait_range() is called in fsync to make it less of a painful operation, so push down taking i_mutex and the calling of filemap_write_and_wait() down into the ->fsync() handlers. Some file systems can drop taking the i_mutex altogether it seems, like ext3 and ocfs2. For correctness sake I just pushed everything down in all cases to make sure that we keep the current behavior the same for everybody, and then each individual fs maintainer can make up their mind about what to do from there. Thanks, Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-12[CIFS] update cifs to version 1.74Steve French1-1/+1
Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-06-14[CIFS] update cifs version to 1.73Steve French1-1/+1
Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-19[CIFS] Update cifs to version 1.72Steve French1-1/+1
Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-19CIFS: Simplify invalidate part (try #5)Pavel Shilovsky1-1/+3
Simplify many places when we call cifs_revalidate/invalidate to make it do what it exactly needs. Reviewed-by: Jeff Layton <jlayton@samba.org> Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-19CIFS: directio read/write cleanupsPavel Shilovsky1-4/+4
Recently introduced strictcache mode brought a new code that can be efficiently used by directio part. That's let us add vectored operations and break unnecessary cifs_user_read and cifs_user_write. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-19cifs: cleanup: Rename and remove config flagsShirish Pargaonkar1-2/+2
Remove config flag CIFS_EXPERIMENTAL. Do export operations under new config flag CIFS_NFSD_EXPORT Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-19cifs: Remove unused inode number while fetching root inodeShirish Pargaonkar1-1/+1
ino is unused in function cifs_root_iget(). Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-02-22[CIFS] update cifs versionSteve French1-1/+1
Update version to 1.71 so we can more easily spot modules with the last two fixes Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-02-01[CIFS] Update cifs minor versionSteve French1-1/+1
Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-01-25CIFS: Implement cifs_strict_writev (try #4)Pavel Shilovsky1-1/+3
If we don't have Exclusive oplock we write a data to the server. Also set invalidate_mapping flag on the inode if we wrote something to the server. Add cifs_iovec_write to let the client write iovec buffers through CIFSSMBWrite2. Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-01-21CIFS: Implement cifs_strict_readv (try #4)Pavel Shilovsky1-1/+3
Read from the cache if we have at least Level II oplock - otherwise read from the server. Add cifs_user_readv to let the client read into iovec buffers. Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-01-21CIFS: Implement cifs_file_strict_mmap (try #2)Pavel Shilovsky1-0/+1
Invalidate inode mapping if we don't have at least Level II oplock. Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-01-21CIFS: Implement cifs_strict_fsyncPavel Shilovsky1-2/+6
Invalidate inode mapping if we don't have at least Level II oplock in cifs_strict_fsync. Also remove filemap_write_and_wait call from cifs_fsync because it is previously called from vfs_fsync_range. Add file operations' structures for strict cache mode. Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-01-19[CIFS] Update cifs version numberSteve French1-1/+1
Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-01-16CIFS: Use d_automount() rather than abusing follow_link()David Howells1-0/+6
Make CIFS use the new d_automount() dentry operation rather than abusing follow_link() on directories. [NOTE: THIS IS UNTESTED!] Signed-off-by: David Howells <dhowells@redhat.com> Cc: Steve French <sfrench@samba.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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