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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 <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>
This commit is contained in:
Pierre Peiffer
2008-04-29 01:00:51 -07:00
committed by Linus Torvalds
parent 016d7132f2
commit 8f4a3809c1
5 changed files with 17 additions and 12 deletions
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5
ipc/msg.c
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@ -484,10 +484,7 @@ static int msgctl_down(struct ipc_namespace *ns, int msqid, int cmd,
msq->q_qbytes = msqid64.msg_qbytes;
ipcp->uid = msqid64.msg_perm.uid;
ipcp->gid = msqid64.msg_perm.gid;
ipcp->mode = (ipcp->mode & ~S_IRWXUGO) |
(S_IRWXUGO & msqid64.msg_perm.mode);
ipc_update_perm(&msqid64.msg_perm, ipcp);
msq->q_ctime = get_seconds();
/* sleeping receivers might be excluded by
* stricter permissions.