linux-toradex.git/fs/posix_acl.c, branch v3.9.7

userns: Convert vfs posix_acl support to use kuids and kgids

2012-09-18T08:01:35+00:00

- In setxattr if we are setting a posix acl convert uids and gids from
  the current user namespace into the initial user namespace, before
  the xattrs are passed to the underlying filesystem.

  Untranslatable uids and gids are represented as -1 which
  posix_acl_from_xattr will represent as INVALID_UID or INVALID_GID.
  posix_acl_valid will fail if an acl from userspace has any
  INVALID_UID or INVALID_GID values.  In net this guarantees that
  untranslatable posix acls will not be stored by filesystems.

- In getxattr if we are reading a posix acl convert uids and gids from
  the initial user namespace into the current user namespace.

  Uids and gids that can not be tranlsated into the current user namespace
  will be represented as -1.

- Replace e_id in struct posix_acl_entry with an anymouns union of
  e_uid and e_gid.  For the short term retain the e_id field
  until all of the users are converted.

- Don't set struct posix_acl.e_id in the cases where the acl type
  does not use e_id.  Greatly reducing the use of ACL_UNDEFINED_ID.

- Rework the ordering checks in posix_acl_valid so that I use kuid_t
  and kgid_t types throughout the code, and so that I don't need
  arithmetic on uid and gid types.

Cc: Theodore Tso 
Cc: Andrew Morton 
Cc: Andreas Dilger 
Cc: Jan Kara 
Cc: Al Viro 
Signed-off-by: Eric W. Biederman

fs: reduce the use of module.h wherever possible

2012-02-29T00:31:58+00:00

For files only using THIS_MODULE and/or EXPORT_SYMBOL, map
them onto including export.h -- or if the file isn't even
using those, then just delete the include.  Fix up any implicit
include dependencies that were being masked by module.h along
the way.

Signed-off-by: Paul Gortmaker

vfs: pass all mask flags check_acl and posix_acl_permission

2011-10-28T12:58:54+00:00

Acked-by: J. Bruce Fields 
Acked-by: David Howells 
Signed-off-by: Andreas Gruenbacher 
Signed-off-by: Aneesh Kumar K.V 
Signed-off-by: Christoph Hellwig

switch posix_acl_chmod() to umode_t

2011-08-01T06:10:32+00:00

again, that's what all callers pass to it

Signed-off-by: Al Viro

switch posix_acl_from_mode() to umode_t

2011-08-01T06:10:20+00:00

... seeing that this is what all callers pass to it anyway.

Signed-off-by: Al Viro

switch posix_acl_equiv_mode() to umode_t *

2011-08-01T06:10:06+00:00

... so that &inode->i_mode could be passed to it

Signed-off-by: Al Viro

switch posix_acl_create() to umode_t *

2011-08-01T06:09:42+00:00

so we can pass &inode->i_mode to it

Signed-off-by: Al Viro

atomic: use

2011-07-26T23:49:47+00:00

This allows us to move duplicated code in 
(atomic_inc_not_zero() for now) to 

Signed-off-by: Arun Sharma 
Reviewed-by: Eric Dumazet 
Cc: Ingo Molnar 
Cc: David Miller 
Cc: Eric Dumazet 
Acked-by: Mike Frysinger 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fs: take the ACL checks to common code

2011-07-25T18:30:23+00:00

Replace the ->check_acl method with a ->get_acl method that simply reads an
ACL from disk after having a cache miss.  This means we can replace the ACL
checking boilerplate code with a single implementation in namei.c.

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

bury posix_acl_..._masq() variants

2011-07-25T18:27:32+00:00

made static; no callers left outside of posix_acl.c.  posix_acl_clone() also
has lost all external callers and became static...

Signed-off-by: Al Viro