linux/fs/ext2
Satyam Sharma 3bd858ab1c Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check
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 <ssatyam@cse.iitk.ac.in>
Cc: Al Viro <viro@ftp.linux.org.uk>
Acked-by: Serge E. Hallyn <serge@hallyn.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 12:00:03 -07:00
..
acl.c Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check 2007-07-17 12:00:03 -07:00
acl.h [PATCH] remove <linux/xattr_acl.h> 2005-06-23 09:45:33 -07:00
balloc.c [PATCH] ext[234]: update documentation 2007-02-20 17:10:14 -08:00
dir.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
ext2.h ext3: copy i_flags to inode flags on write 2007-05-08 11:15:13 -07:00
file.c ext2: fix a comment when ext2_release_file() is called 2007-07-16 09:05:44 -07:00
fsync.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
ialloc.c [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
inode.c ext3: copy i_flags to inode flags on write 2007-05-08 11:15:13 -07:00
ioctl.c Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check 2007-07-17 12:00:03 -07:00
Makefile [PATCH] Make EXT2_DEBUG work again 2006-06-25 10:01:12 -07:00
namei.c [PATCH] mark struct inode_operations const 1 2007-02-12 09:48:46 -08:00
super.c knfsd: exportfs: add exportfs.h header 2007-07-17 10:23:06 -07:00
symlink.c [PATCH] mark struct inode_operations const 1 2007-02-12 09:48:46 -08:00
xattr_security.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
xattr_trusted.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
xattr_user.c [PATCH] remove ext2 xattr permission checks 2006-01-10 08:01:30 -08:00
xattr.c [PATCH] Remove superfluous lock_super() in extN xattr code 2006-12-07 08:39:32 -08:00
xattr.h Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
xip.c [PATCH] fix xip sparse file handling in ext2 2005-07-27 16:25:53 -07:00
xip.h [PATCH] xip: ext2: execute in place 2005-06-24 00:06:41 -07:00