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| author | Pierre Peiffer <pierre.peiffer@bull.net> | 2008-04-29 01:00:51 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-29 08:06:13 -0700 |
| commit | 8f4a3809c18ff3107bdbb1fabe3f4e5d2a928321 (patch) | |
| tree | 444ec369565052fde4b349c40b610caa69c93a25 /ipc/util.c | |
| parent | 016d7132f246a05e6e34ccba157fa278a96c45ae (diff) | |
| download | lwn-8f4a3809c18ff3107bdbb1fabe3f4e5d2a928321.tar.gz lwn-8f4a3809c18ff3107bdbb1fabe3f4e5d2a928321.zip | |
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.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/ipc/util.c b/ipc/util.c index 7a5d5e393c4b..dc8943aa9719 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 |