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authorPierre Peiffer <pierre.peiffer@bull.net>2008-04-29 01:00:51 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-29 08:06:13 -0700
commit8f4a3809c18ff3107bdbb1fabe3f4e5d2a928321 (patch)
tree444ec369565052fde4b349c40b610caa69c93a25 /ipc/util.c
parent016d7132f246a05e6e34ccba157fa278a96c45ae (diff)
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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>
Diffstat (limited to 'ipc/util.c')
-rw-r--r--ipc/util.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/ipc/util.c b/ipc/util.c
index 7a5d5e393c4..dc8943aa971 100644
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -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