[PATCH] selinux: add hooks for key subsystem

Introduce SELinux hooks to support the access key retention subsystem
within the kernel.  Incorporate new flask headers from a modified version
of the SELinux reference policy, with support for the new security class
representing retained keys.  Extend the "key_alloc" security hook with a
task parameter representing the intended ownership context for the key
being allocated.  Attach security information to root's default keyrings
within the SELinux initialization routine.

Has passed David's testsuite.

Signed-off-by: Michael LeMay <mdlemay@epoch.ncsc.mil>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
Acked-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/security/keys/keyring.c b/security/keys/keyring.c
index bffa924c1f88..1357207fc9df 100644
--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -240,13 +240,14 @@ static long keyring_read(const struct key *keyring,
  * allocate a keyring and link into the destination keyring
  */
 struct key *keyring_alloc(const char *description, uid_t uid, gid_t gid,
-                          int not_in_quota, struct key *dest)
+                          struct task_struct *ctx, int not_in_quota,
+                          struct key *dest)
 {
         struct key *keyring;
         int ret;
 
         keyring = key_alloc(&key_type_keyring, description,
-                            uid, gid,
+                            uid, gid, ctx,
                             (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_ALL,
                             not_in_quota);