| From | "\"Eric W. Beiderman" <> | Date | Sat, 7 Apr 2012 22:15:17 -0700 | Subject | [PATCH 21/43] userns: Convert sched_set_affinity and sched_set_scheduler's permission checks |
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From: Eric W. Biederman <ebiederm@xmission.com>
- Compare kuids with uid_eq - kuid are uniuqe across all user namespaces so there is no longer the need for a user_namespace comparison.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> --- kernel/sched/core.c | 7 ++----- 1 files changed, 2 insertions(+), 5 deletions(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 96bff85..b189fec 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -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; } -- 1.7.2.5
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