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>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/exec.c b/fs/exec.c
index 604834f3b20..31149e430a8 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1738,7 +1738,7 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs)
          */
         if (get_dumpable(mm) == 2) {    /* Setuid core dump mode */
                 flag = O_EXCL;          /* Stop rewrite attacks */
-                current->fsuid = 0;     /* Dump root private */
+                current->cred->fsuid = 0;       /* Dump root private */
         }
 
         retval = coredump_wait(exit_code, &core_state);
@@ -1834,7 +1834,7 @@ fail_unlock:
         if (helper_argv)
                 argv_free(helper_argv);
 
-        current->fsuid = fsuid;
+        current->cred->fsuid = fsuid;
         coredump_finish(mm);
 fail:
         return retval;