1 /*
2 * Copyright (c) International Business Machines Corp., 2001
3 * 07/2001 Ported by Wayne Boyer
4 * 11/2016 Modified by Guangwen Feng <fenggw-fnst@cn.fujitsu.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
18 */
19
20 /*
21 * Verify that getpriority(2) succeeds get the scheduling priority of
22 * the current process, process group or user, and the priority values
23 * are in the ranges of [0, 0], [0, 0] and [-20, 0] by default for the
24 * flags PRIO_PROCESS, PRIO_PGRP and PRIO_USER respectively.
25 */
26
27 #include <errno.h>
28 #include <sys/resource.h>
29 #include <sys/time.h>
30 #include "tst_test.h"
31
32 static struct tcase {
33 int which;
34 int min;
35 int max;
36 } tcases[] = {
37 {PRIO_PROCESS, 0, 0},
38 {PRIO_PGRP, 0, 0},
39 {PRIO_USER, -20, 0}
40 };
41
verify_getpriority(unsigned int n)42 static void verify_getpriority(unsigned int n)
43 {
44 struct tcase *tc = &tcases[n];
45
46 TEST(getpriority(tc->which, 0));
47
48 if (TST_ERR != 0) {
49 tst_res(TFAIL | TTERRNO, "getpriority(%d, 0) failed",
50 tc->which);
51 return;
52 }
53
54 if (TST_RET < tc->min || TST_RET > tc->max) {
55 tst_res(TFAIL, "getpriority(%d, 0) returned %ld, "
56 "expected in the range of [%d, %d]",
57 tc->which, TST_RET, tc->min, tc->max);
58 return;
59 }
60
61 tst_res(TPASS, "getpriority(%d, 0) returned %ld",
62 tc->which, TST_RET);
63 }
64
65 static struct tst_test test = {
66 .tcnt = ARRAY_SIZE(tcases),
67 .test = verify_getpriority,
68 };
69