mirror of
https://gitlab.com/apparmor/apparmor.git
synced 2025-03-09 02:41:03 +01:00
54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
|
/* $Id: syscall_setscheduler.c 6040 2006-01-11 00:15:48Z tonyj $ */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copyright (C) 2002-2005 Novell/SUSE
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License as
|
||
|
|
* published by the Free Software Foundation, version 2 of the
|
||
|
|
* License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* test whether the sched_setscheduler(2) syscall is allowed. */
|
||
|
|
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <errno.h>
|
||
|
|
#include <sched.h>
|
||
|
|
|
||
|
|
int
|
||
|
|
main (int argc, char * argv[]) {
|
||
|
|
struct sched_param sp, saved_sp, new_sp;
|
||
|
|
int saved_sched_policy, new_sched_policy;
|
||
|
|
|
||
|
|
/* save the default policy and priority */
|
||
|
|
memset(&saved_sp, 0, sizeof(saved_sp));
|
||
|
|
saved_sched_policy = sched_getscheduler(0);
|
||
|
|
if (saved_sched_policy < 0) {
|
||
|
|
perror ("FAIL: Couldn't get scheduler policy\n");
|
||
|
|
saved_sched_policy = SCHED_OTHER;
|
||
|
|
return errno;
|
||
|
|
}
|
||
|
|
saved_sp.sched_priority = sched_get_priority_max(saved_sched_policy);
|
||
|
|
|
||
|
|
memset(&sp, 0, sizeof(sp));
|
||
|
|
sp.sched_priority = sched_get_priority_max(SCHED_RR) - 1;
|
||
|
|
if (sched_setscheduler(0, SCHED_RR, &sp)) {
|
||
|
|
perror("FAIL: Can't set SCHED_RR");
|
||
|
|
return errno;
|
||
|
|
}
|
||
|
|
|
||
|
|
memset(&new_sp, 0, sizeof(new_sp));
|
||
|
|
new_sched_policy = sched_getscheduler(0);
|
||
|
|
if (new_sched_policy != SCHED_RR) {
|
||
|
|
fprintf (stderr, "FAIL: set policy is %d, not SCHED_RR\n",
|
||
|
|
new_sched_policy);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
printf ("PASS\n");
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|