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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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13
ipc/util.c
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@@ -811,6 +811,19 @@ int ipcget(struct ipc_namespace *ns, struct ipc_ids *ids,
return ipcget_public(ns, ids, ops, params);
}
/**
* ipc_update_perm - update the permissions of an IPC.
* @in: the permission given as input.
* @out: the permission of the ipc to set.
*/
void ipc_update_perm(struct ipc64_perm *in, struct kern_ipc_perm *out)
{
out->uid = in->uid;
out->gid = in->gid;
out->mode = (out->mode & ~S_IRWXUGO)
| (in->mode & S_IRWXUGO);
}
#ifdef __ARCH_WANT_IPC_PARSE_VERSION