Commit 9c806aa0 authored Feb 02, 2012 by Eric W. Biederman

userns: Convert sched_set_affinity and sched_set_scheduler's permission checks



- Compare kuids with uid_eq
- kuid are uniuqe across all user namespaces so there is no longer the
  need for a user_namespace comparison.

Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>

parent 76b6db01

kernel/sched/core.c

+2 −5

Original line number	Diff line number	Diff line
		@@ -4042,11 +4042,8 @@ static bool check_same_owner(struct task_struct *p)

		rcu_read_lock();
		pcred = __task_cred(p);
		if (cred->user_ns == pcred->user_ns)
		match = (cred->euid == pcred->euid \|\|
		cred->euid == pcred->uid);
		else
		match = false;
		match = (uid_eq(cred->euid, pcred->euid) \|\|
		uid_eq(cred->euid, pcred->uid));
		rcu_read_unlock();
		return match;
		}