Commit c21761f1 authored Jan 18, 2006 by Jason Baron Committed by Linus Torvalds Jan 18, 2006

[PATCH] fix sched_setscheduler semantics



Currently, a negative policy argument passed into the
'sys_sched_setscheduler()' system call, will return with success.  However,
the manpage for 'sys_sched_setscheduler' says:

EINVAL The scheduling policy is not one of the recognized policies, or the
              parameter p does not make sense for the policy.

Signed-off-by: Jason Baron <jbaron@redhat.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent 147b31cf

kernel/sched.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -3850,6 +3850,10 @@ do_sched_setscheduler(pid_t pid, int policy, struct sched_param __user *param)
		asmlinkage long sys_sched_setscheduler(pid_t pid, int policy,
		struct sched_param __user *param)
		{
		/* negative values for policy are not valid */
		if (policy < 0)
		return -EINVAL;

		return do_sched_setscheduler(pid, policy, param);
		}