IPC: introduce ipc_update_perm()

The IPC_SET command performs the same permission setting for all IPCs.  This
patch introduces a common ipc_update_perm() function to update these
permissions and makes use of it for all IPCs.

Signed-off-by: Pierre Peiffer <pierre.peiffer@bull.net>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Cc: Nadia Derbey <Nadia.Derbey@bull.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 4 deletions

diff --git a/ipc/sem.c b/ipc/sem.c
index df98de290475..e803abec2b08 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -913,10 +913,7 @@ static int semctl_down(struct ipc_namespace *ns, int semid,
                 freeary(ns, ipcp);
                 goto out_up;
         case IPC_SET:
-                ipcp->uid = semid64.sem_perm.uid;
-                ipcp->gid = semid64.sem_perm.gid;
-                ipcp->mode = (ipcp->mode & ~S_IRWXUGO)
-                                | (semid64.sem_perm.mode & S_IRWXUGO);
+                ipc_update_perm(&semid64.sem_perm, ipcp);
                 sma->sem_ctime = get_seconds();
                 break;
         default: