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userns: Allow the unprivileged users to mount mqueue fs

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This patch allow the unprivileged user to mount mqueuefs in
user ns.

If two userns share the same ipcns,the files in mqueue fs
should be seen in both these two userns.

If the userns has its own ipcns,it has its own mqueue fs too.
ipcns has already done this job well.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
This commit is contained in:
Gao feng 2013-01-28 11:09:01 +08:00 committed by Eric W. Biederman
parent 2b8576cb09
commit bc1b69ed22
1 changed files with 1 additions and 0 deletions
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ipc/mqueue.c
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@ -1383,6 +1383,7 @@ static struct file_system_type mqueue_fs_type = {
.name = "mqueue",
.mount = mqueue_mount,
.kill_sb = kill_litter_super,
.fs_flags = FS_USERNS_MOUNT,
};
int mq_init_ns(struct ipc_namespace *ns)