vfs: re-introduce MAY_CHDIR
authorEric Paris <eparis@redhat.com>
Fri, 23 Jul 2010 15:43:51 +0000 (11:43 -0400)
committerJames Morris <jmorris@namei.org>
Mon, 2 Aug 2010 05:35:06 +0000 (15:35 +1000)
commit9cfcac810e8993fa7a5bfd24b1a21f1dbbb03a7b
tree86fae80c744e46b15b8eb9aa23fead7e63a64159
parent692a8a231b212dfc68f612956d63f34abf098e0f
vfs: re-introduce MAY_CHDIR

Currently MAY_ACCESS means that filesystems must check the permissions
right then and not rely on cached results or the results of future
operations on the object.  This can be because of a call to sys_access() or
because of a call to chdir() which needs to check search without relying on
any future operations inside that dir.  I plan to use MAY_ACCESS for other
purposes in the security system, so I split the MAY_ACCESS and the
MAY_CHDIR cases.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Stephen D. Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@namei.org>
fs/fuse/dir.c
fs/nfs/dir.c
fs/open.c
include/linux/fs.h