linux.git/fs/ext2/acl.c, branch v2.6.35

ext2: update ctime when changing the file's permission by setfacl

2010-06-24T23:20:37+00:00

ext2 didn't update the ctime of the file when its permission was changed.

Steps to reproduce:
 # touch aaa
 # stat -c %Z aaa
 1275289822
 # setfacl -m  'u::x,g::x,o::x' aaa
 # stat -c %Z aaa
 1275289822                         <- unchanged

But, according to the spec of the ctime, ext2 must update it.

Port of ext3 patch by Miao Xie .

Signed-off-by: Jan Kara

ext2: constify xattr_handler

2010-05-21T22:31:18+00:00

Signed-off-by: Stephen Hemminger 
Signed-off-by: Al Viro

sanitize xattr handler prototypes

2009-12-16T17:16:49+00:00

Add a flags argument to struct xattr_handler and pass it to all xattr
handler methods.  This allows using the same methods for multiple
handlers, e.g. for the ACL methods which perform exactly the same action
for the access and default ACLs, just using a different underlying
attribute.  With a little more groundwork it'll also allow sharing the
methods for the regular user/trusted/secure handlers in extN, ocfs2 and
jffs2 like it's already done for xfs in this patch.

Also change the inode argument to the handlers to a dentry to allow
using the handlers mechnism for filesystems that require it later,
e.g. cifs.

[with GFS2 bits updated by Steven Whitehouse ]

Signed-off-by: Christoph Hellwig 
Reviewed-by: James Morris 
Acked-by: Joel Becker 
Signed-off-by: Al Viro

ext[234]: move over to 'check_acl' permission model

2009-09-08T18:09:04+00:00

Don't implement per-filesystem 'extX_permission()' functions that have
to be called for every path component operation, and instead just expose
the actual ACL checking so that the VFS layer can now do it for us.

Reviewed-by: James Morris 
Acked-by: Serge Hallyn 
Signed-off-by: Linus Torvalds

helpers for acl caching + switch to those

2009-06-24T12:17:07+00:00

helpers: get_cached_acl(inode, type), set_cached_acl(inode, type, acl),
forget_cached_acl(inode, type).

ubifs/xattr.c needed includes reordered, the rest is a plain switchover.

Signed-off-by: Al Viro

switch ext2 to inode->i_acl

2009-06-24T12:15:28+00:00

Signed-off-by: Al Viro

New helper - current_umask()

2009-04-01T03:00:26+00:00

current->fs->umask is what most of fs_struct users are doing.
Put that into a helper function.

Signed-off-by: Al Viro

[PATCH] sanitize ->permission() prototype

2008-07-27T00:53:14+00:00

* kill nameidata * argument; map the 3 bits in ->flags anybody cares
  about to new MAY_... ones and pass with the mask.
* kill redundant gfs2_iop_permission()
* sanitize ecryptfs_permission()
* fix remaining places where ->permission() instances might barf on new
  MAY_... found in mask.

The obvious next target in that direction is permission(9)

folded fix for nfs_permission() breakage from Miklos Szeredi 

Signed-off-by: Al Viro

Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check

2007-07-17T19:00:03+00:00

Introduce is_owner_or_cap() macro in fs.h, and convert over relevant
users to it. This is done because we want to avoid bugs in the future
where we check for only effective fsuid of the current task against a
file's owning uid, without simultaneously checking for CAP_FOWNER as
well, thus violating its semantics.
[ XFS uses special macros and structures, and in general looked ...
untouchable, so we leave it alone -- but it has been looked over. ]

The (current->fsuid != inode->i_uid) check in generic_permission() and
exec_permission_lite() is left alone, because those operations are
covered by CAP_DAC_OVERRIDE and CAP_DAC_READ_SEARCH. Similarly operations
falling under the purview of CAP_CHOWN and CAP_LEASE are also left alone.

Signed-off-by: Satyam Sharma 
Cc: Al Viro 
Acked-by: Serge E. Hallyn 
Signed-off-by: Linus Torvalds

[PATCH] fs: Removing useless casts

2006-09-27T15:26:10+00:00

* Removing useless casts
* Removing useless wrapper
* Conversion from kmalloc+memset to kzalloc

Signed-off-by: Panagiotis Issaris 
Acked-by: Dave Kleikamp 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds