linux.git/fs/cifs, branch v4.8

Move check for prefix path to within cifs_get_root()

2016-09-10T04:58:07+00:00

Signed-off-by: Sachin Prabhu 
Tested-by: Aurelien Aptel 
Signed-off-by: Steve French

Compare prepaths when comparing superblocks

2016-09-10T04:58:06+00:00

The patch
fs/cifs: make share unaccessible at root level mountable
makes use of prepaths when any component of the underlying path is
inaccessible.

When mounting 2 separate shares having different prepaths but are other
wise similar in other respects, we end up sharing superblocks when we
shouldn't be doing so.

Signed-off-by: Sachin Prabhu 
Tested-by: Aurelien Aptel 
Signed-off-by: Steve French

Fix memory leaks in cifs_do_mount()

2016-09-10T04:58:06+00:00

Fix memory leaks introduced by the patch
fs/cifs: make share unaccessible at root level mountable

Also move allocation of cifs_sb->prepath to cifs_setup_cifs_sb().

Signed-off-by: Sachin Prabhu 
Tested-by: Aurelien Aptel 
Signed-off-by: Steve French

get rid of 'parent' argument of ->d_compare()

2016-07-31T20:37:25+00:00

Signed-off-by: Al Viro

cifs, msdos, vfat, hfs+: don't bother with parent in ->d_compare()

2016-07-29T22:27:51+00:00

dentry->d_sb is just as good as parent->d_sb

Signed-off-by: Al Viro

Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6

2016-07-29T18:29:13+00:00

Pull CIFS/SMB3 fixes from Steve French:
 "Various CIFS/SMB3 fixes, most for stable"

* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
  CIFS: Fix a possible invalid memory access in smb2_query_symlink()
  fs/cifs: make share unaccessible at root level mountable
  cifs: fix crash due to race in hmac(md5) handling
  cifs: unbreak TCP session reuse
  cifs: Check for existing directory when opening file with O_CREAT
  Add MF-Symlinks support for SMB 2.0

Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2016-07-28T19:59:05+00:00

Pull vfs updates from Al Viro:
 "Assorted cleanups and fixes.

  Probably the most interesting part long-term is ->d_init() - that will
  have a bunch of followups in (at least) ceph and lustre, but we'll
  need to sort the barrier-related rules before it can get used for
  really non-trivial stuff.

  Another fun thing is the merge of ->d_iput() callers (dentry_iput()
  and dentry_unlink_inode()) and a bunch of ->d_compare() ones (all
  except the one in __d_lookup_lru())"

* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (26 commits)
  fs/dcache.c: avoid soft-lockup in dput()
  vfs: new d_init method
  vfs: Update lookup_dcache() comment
  bdev: get rid of ->bd_inodes
  Remove last traces of ->sync_page
  new helper: d_same_name()
  dentry_cmp(): use lockless_dereference() instead of smp_read_barrier_depends()
  vfs: clean up documentation
  vfs: document ->d_real()
  vfs: merge .d_select_inode() into .d_real()
  unify dentry_iput() and dentry_unlink_inode()
  binfmt_misc: ->s_root is not going anywhere
  drop redundant ->owner initializations
  ufs: get rid of redundant checks
  orangefs: constify inode_operations
  missed comment updates from ->direct_IO() prototype change
  file_inode(f)->i_mapping is f->f_mapping
  trim fsnotify hooks a bit
  9p: new helper - v9fs_parent_fid()
  debugfs: ->d_parent is never NULL or negative
  ...

Merge branch 'salted-string-hash'

2016-07-28T19:26:31+00:00

This changes the vfs dentry hashing to mix in the parent pointer at the
_beginning_ of the hash, rather than at the end.

That actually improves both the hash and the code generation, because we
can move more of the computation to the "static" part of the dcache
setup, and do less at lookup runtime.

It turns out that a lot of other hash users also really wanted to mix in
a base pointer as a 'salt' for the hash, and so the slightly extended
interface ends up working well for other cases too.

Users that want a string hash that is purely about the string pass in a
'salt' pointer of NULL.

* merge branch 'salted-string-hash':
  fs/dcache.c: Save one 32-bit multiply in dcache lookup
  vfs: make the string hashes salt the hash

CIFS: Fix a possible invalid memory access in smb2_query_symlink()

2016-07-28T03:55:56+00:00

During following a symbolic link we received err_buf from SMB2_open().
While the validity of SMB2 error response is checked previously
in smb2_check_message() a symbolic link payload is not checked at all.
Fix it by adding such checks.

Cc: Dan Carpenter 
CC: Stable 
Signed-off-by: Pavel Shilovsky 
Signed-off-by: Steve French

fs/cifs: make share unaccessible at root level mountable

2016-07-28T03:50:55+00:00

if, when mounting //HOST/share/sub/dir/foo we can query /sub/dir/foo but
not any of the path components above:

- store the /sub/dir/foo prefix in the cifs super_block info
- in the superblock, set root dentry to the subpath dentry (instead of
  the share root)
- set a flag in the superblock to remember it
- use prefixpath when building path from a dentry

fixes bso#8950

Signed-off-by: Aurelien Aptel 
CC: Stable 
Reviewed-by: Pavel Shilovsky 
Signed-off-by: Steve French