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