[PATCH] support for context based audit filtering

The following patch provides selinux interfaces that will allow the audit
system to perform filtering based on the process context (user, role, type,
sensitivity, and clearance).  These interfaces will allow the selinux
module to perform efficient matches based on lower level selinux constructs,
rather than relying on context retrievals and string comparisons within
the audit module.  It also allows for dominance checks on the mls portion
of the contexts that are impossible with only string comparisons.

Signed-off-by: Darrel Goeddel <dgoeddel@trustedcs.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 7 insertions, 6 deletions

diff --git a/security/selinux/avc.c b/security/selinux/avc.c
index ac5d69bb3377..a300702da527 100644
--- a/security/selinux/avc.c
+++ b/security/selinux/avc.c
@@ -800,7 +800,7 @@ out:
 int avc_ss_reset(u32 seqno)
 {
         struct avc_callback_node *c;
-        int i, rc = 0;
+        int i, rc = 0, tmprc;
         unsigned long flag;
         struct avc_node *node;
 
@@ -813,15 +813,16 @@ int avc_ss_reset(u32 seqno)
 
         for (c = avc_callbacks; c; c = c->next) {
                 if (c->events & AVC_CALLBACK_RESET) {
-                        rc = c->callback(AVC_CALLBACK_RESET,
-                                         0, 0, 0, 0, NULL);
-                        if (rc)
-                                goto out;
+                        tmprc = c->callback(AVC_CALLBACK_RESET,
+                                            0, 0, 0, 0, NULL);
+                        /* save the first error encountered for the return
+                           value and continue processing the callbacks */
+                        if (!rc)
+                                rc = tmprc;
                 }
         }
 
         avc_latest_notif_update(seqno, 0);
-out:
         return rc;
 }