linux-stable.git/include/linux/posix_acl.h, branch v4.7.3

posix_acl: de-union a_refcount and a_rcu

2016-07-11T17:48:02+00:00

Currently the two are unioned together, but I don't think that's safe.

It looks like get_cached_acl could race with the last put in
posix_acl_release. get_cached_acl calls atomic_inc_not_zero on
a_refcount, but that field could have already been clobbered by
call_rcu, and may no longer be zero. Fix this by de-unioning the two
fields.

Fixes: b8a7a3a66747 (posix_acl: Inode acl caching fixes)
Signed-off-by: Jeff Layton 
Signed-off-by: Al Viro

posix_acl: Unexport acl_by_type and make it static

2016-03-31T04:30:26+00:00

acl_by_type(inode, type) returns a pointer to either inode->i_acl or
inode->i_default_acl depending on type.  This is useful in
fs/posix_acl.c, but should never have been visible outside that file.

Signed-off-by: Andreas Gruenbacher 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Al Viro

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2014-01-28T16:38:04+00:00

Pull vfs updates from Al Viro:
 "Assorted stuff; the biggest pile here is Christoph's ACL series.  Plus
  assorted cleanups and fixes all over the place...

  There will be another pile later this week"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (43 commits)
  __dentry_path() fixes
  vfs: Remove second variable named error in __dentry_path
  vfs: Is mounted should be testing mnt_ns for NULL or error.
  Fix race when checking i_size on direct i/o read
  hfsplus: remove can_set_xattr
  nfsd: use get_acl and ->set_acl
  fs: remove generic_acl
  nfs: use generic posix ACL infrastructure for v3 Posix ACLs
  gfs2: use generic posix ACL infrastructure
  jfs: use generic posix ACL infrastructure
  xfs: use generic posix ACL infrastructure
  reiserfs: use generic posix ACL infrastructure
  ocfs2: use generic posix ACL infrastructure
  jffs2: use generic posix ACL infrastructure
  hfsplus: use generic posix ACL infrastructure
  f2fs: use generic posix ACL infrastructure
  ext2/3/4: use generic posix ACL infrastructure
  btrfs: use generic posix ACL infrastructure
  fs: make posix_acl_create more useful
  fs: make posix_acl_chmod more useful
  ...

fs: remove generic_acl

2014-01-26T13:26:40+00:00

And instead convert tmpfs to use the new generic ACL code, with two stub
methods provided for in-memory filesystems.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Al Viro

nfs: use generic posix ACL infrastructure for v3 Posix ACLs

2014-01-26T13:26:20+00:00

This causes a small behaviour change in that we don't bother to set
ACLs on file creation if the mode bit can express the access permissions
fully, and thus behaving identical to local filesystems.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Al Viro

fs: make posix_acl_create more useful

2014-01-26T04:58:18+00:00

Rename the current posix_acl_created to __posix_acl_create and add
a fully featured helper to set up the ACLs on file creation that
uses get_acl().

Signed-off-by: Christoph Hellwig 
Reviewed-by: Jan Kara 
Signed-off-by: Al Viro

fs: make posix_acl_chmod more useful

2014-01-26T04:58:18+00:00

Rename the current posix_acl_chmod to __posix_acl_chmod and add
a fully featured ACL chmod helper that uses the ->set_acl inode
operation.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Jan Kara 
Signed-off-by: Al Viro

fs: add get_acl helper

2014-01-26T04:58:16+00:00

Factor out the code to get an ACL either from the inode or disk from
check_acl, so that it can be used elsewhere later on.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Jan Kara 
Signed-off-by: Al Viro

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2014-01-25T19:10:14+00:00

Pull user namespaces work from Eric Biederman:
 "The work to convert the kernel to use kuid_t and kgid_t has been
  finished since 3.12 so it is time to remove the scaffolding that
  allowed the work to progress incrementally.

  The first patch on this branch just removes the scaffolding, ensuring
  we will always get compile errors if people accidentally try the
  userspace and the kernel uid and gid types.  The second patch an
  overlooked and unused chunk of mips code that that fails to build
  after the first patch.

  The code hasn't been in linux-next for long (as I was out of it and
  could not sheppared the cold properly) but the patch has been around
  for a long time just waiting for the day when I had finished the
  uid/gid conversions.  Putting the code in linux-next did find the
  compile failure on mips so I took the time to get that fix reviewed
  and included.  Beyond that I am not too worried about errors because
  all these two patches do is delete a modest amount of code"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  MIPS: VPE: Remove vpe_getuid and vpe_getgid
  userns:  userns: Remove UIDGID_STRICT_TYPE_CHECKS

posix_acl: uninlining

2014-01-22T00:19:42+00:00

Uninline vast tracts of nested inline functions in
include/linux/posix_acl.h.

This reduces the text+data+bss size of x86_64 allyesconfig vmlinux by
8026 bytes.

The patch also regularises the positioning of the EXPORT_SYMBOLs in
posix_acl.c.

Cc: Alexander Viro 
Cc: J. Bruce Fields 
Cc: Trond Myklebust 
Tested-by: Benny Halevy 
Cc: Benny Halevy 
Cc: Andreas Gruenbacher 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds