1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) International Business Machines Corp., 2001
4 * Ported to LTP: Wayne Boyer
5 * 11/2016 Modified by Guangwen Feng <fenggw-fnst@cn.fujitsu.com>
6 */
7
8 /*
9 * Verify that,
10 * 1) getpriority(2) fails with -1 and sets errno to EINVAL if 'which'
11 * argument was not one of PRIO_PROCESS, PRIO_PGRP, or PRIO_USER.
12 * 2) getpriority(2) fails with -1 and sets errno to ESRCH if no
13 * process was located for 'which' and 'who' arguments.
14 */
15
16 #include <errno.h>
17 #include <sys/resource.h>
18 #include <sys/time.h>
19 #include "tst_test.h"
20
21 #define INVAL_FLAG -1
22 #define INVAL_ID -1
23
24 static struct tcase {
25 int which;
26 int who;
27 int exp_errno;
28 } tcases[] = {
29 /* test 1 */
30 {INVAL_FLAG, 0, EINVAL},
31
32 /* test 2 */
33 {PRIO_PROCESS, INVAL_ID, ESRCH},
34 {PRIO_PGRP, INVAL_ID, ESRCH},
35 {PRIO_USER, INVAL_ID, ESRCH}
36 };
37
verify_getpriority(unsigned int n)38 static void verify_getpriority(unsigned int n)
39 {
40 struct tcase *tc = &tcases[n];
41
42 TEST(getpriority(tc->which, tc->who));
43
44 if (TST_RET != -1) {
45 tst_res(TFAIL, "getpriority(%d, %d) succeeds unexpectedly, "
46 "returned %li", tc->which, tc->who, TST_RET);
47 return;
48 }
49
50 if (tc->exp_errno != TST_ERR) {
51 tst_res(TFAIL | TTERRNO,
52 "getpriority(%d, %d) should fail with %s",
53 tc->which, tc->who, tst_strerrno(tc->exp_errno));
54 return;
55 }
56
57 tst_res(TPASS | TTERRNO, "getpriority(%d, %d) fails as expected",
58 tc->which, tc->who);
59 }
60
61 static struct tst_test test = {
62 .tcnt = ARRAY_SIZE(tcases),
63 .test = verify_getpriority,
64 };
65