Commit b236017a authored May 31, 2016 by Eric W. Biederman

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>

parent 8654df4e

ipc/namespace.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -34,8 +34,11 @@ static struct ipc_namespace create_ipc_ns(struct user_namespace user_ns,
		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 @@ static struct ipc_namespace create_ipc_ns(struct user_namespace user_ns,
		msg_init_ns(ns);
		shm_init_ns(ns);

		ns->user_ns = get_user_ns(user_ns);

		return ns;
		}