return -EPERM;
}
+ /*
+ * Can't set/change SCHED_DEADLINE policy at all for now
+ * (safest behavior); in the future we would like to allow
+ * unprivileged DL tasks to increase their relative deadline
+ * or reduce their runtime (both ways reducing utilization)
+ */
+ if (dl_policy(policy))
+ return -EPERM;
+
/*
* Treat SCHED_IDLE as nice 20. Only allow a switch to
* SCHED_NORMAL if the RLIMIT_NICE would normally permit it.
if (sched_copy_attr(uattr, &attr))
return -EFAULT;
+ if (attr.sched_policy < 0)
+ return -EINVAL;
+
rcu_read_lock();
retval = -ESRCH;
p = find_process_by_pid(pid);