ipc: Initialize ipc_namespace->user_ns early.
Allow the ipc namespace initialization code to depend on ns->user_ns
being set during initialization.
In particular this allows mq_init_ns to use ns->user_ns for permission
checks and initializating s_user_ns while the the mq filesystem is
being mounted.
Acked-by: Seth Forshee <seth.forshee@canonical.com>
Suggested-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
diff --git a/ipc/namespace.c b/ipc/namespace.c
index 068caf1..04cb07e 100644
--- a/ipc/namespace.c
+++ b/ipc/namespace.c
@@ -34,8 +34,11 @@
ns->ns.ops = &ipcns_operations;
atomic_set(&ns->count, 1);
+ ns->user_ns = get_user_ns(user_ns);
+
err = mq_init_ns(ns);
if (err) {
+ put_user_ns(ns->user_ns);
ns_free_inum(&ns->ns);
kfree(ns);
return ERR_PTR(err);
@@ -46,8 +49,6 @@
msg_init_ns(ns);
shm_init_ns(ns);
- ns->user_ns = get_user_ns(user_ns);
-
return ns;
}