CRED: Separate task security context from task_struct

Separate the task security context from task_struct.  At this point, the
security data is temporarily embedded in the task_struct with two pointers
pointing to it.

Note that the Alpha arch is altered as it refers to (E)UID and (E)GID in
entry.S via asm-offsets.

With comment fixes Signed-off-by: Marc Dionne <marc.c.dionne@gmail.com>

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: James Morris <jmorris@namei.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c
index c21d8c8..c5ca279 100644
--- a/security/smack/smackfs.c
+++ b/security/smack/smackfs.c
@@ -336,7 +336,7 @@
 
 	audit_info.loginuid = audit_get_loginuid(current);
 	audit_info.sessionid = audit_get_sessionid(current);
-	audit_info.secid = smack_to_secid(current->security);
+	audit_info.secid = smack_to_secid(current->cred->security);
 
 	rc = netlbl_cfg_map_del(NULL, &audit_info);
 	if (rc != 0)
@@ -371,7 +371,7 @@
 
 	audit_info.loginuid = audit_get_loginuid(current);
 	audit_info.sessionid = audit_get_sessionid(current);
-	audit_info.secid = smack_to_secid(current->security);
+	audit_info.secid = smack_to_secid(current->cred->security);
 
 	if (oldambient != NULL) {
 		rc = netlbl_cfg_map_del(oldambient, &audit_info);
@@ -843,7 +843,7 @@
 				 size_t count, loff_t *ppos)
 {
 	char in[SMK_LABELLEN];
-	char *sp = current->security;
+	char *sp = current->cred->security;
 
 	if (!capable(CAP_MAC_ADMIN))
 		return -EPERM;