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IPC: introduce ipc_update_perm()

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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 <[email protected]>
Acked-by: Serge Hallyn <[email protected]>
Cc: Nadia Derbey <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Pierre Peiffer 2008-04-29 01:00:51 -07:00 • committed by Linus Torvalds
commit 8f4a3809c1
5 changed files with 17 additions and 12 deletions
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5
ipc/shm.c
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@ -656,10 +656,7 @@ static int shmctl_down(struct ipc_namespace *ns, int shmid, int cmd,
do_shm_rmid(ns, ipcp);
goto out_up;
case IPC_SET:
ipcp->uid = shmid64.shm_perm.uid;
ipcp->gid = shmid64.shm_perm.gid;
ipcp->mode = (ipcp->mode & ~S_IRWXUGO)
| (shmid64.shm_perm.mode & S_IRWXUGO);
ipc_update_perm(&shmid64.shm_perm, ipcp);
shp->shm_ctim = get_seconds();
break;
default: