1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Test that semop() basic functionality is correct
4 *
5 * Copyright (c) International Business Machines Corp., 2001
6 * 03/2001 - Written by Wayne Boyer
7 * 17/01/02 - Modified. Manoj Iyer, IBM Austin. TX. manjo@austin.ibm.com
8 */
9
10 #include <stdlib.h>
11 #include "tst_test.h"
12 #include "libnewipc.h"
13 #include "lapi/sem.h"
14 #include "semop.h"
15
16 #define NSEMS 4
17
18 static int sem_id = -1;
19 static key_t semkey;
20
21 static unsigned short int sarr[PSEMS];
22 static union semun get_arr = {.array = sarr};
23 static struct sembuf sops[PSEMS];
24 static struct tst_ts timeout;
25
26 static struct test_case_t {
27 struct tst_ts *to;
28 } tc[] = {
29 {NULL},
30 {&timeout}
31 };
32
run(unsigned int n)33 static void run(unsigned int n)
34 {
35 struct time64_variants *tv = &variants[tst_variant];
36 union semun arr = { .val = 0 };
37 int fail = 0;
38 int i;
39
40 TEST(call_semop(tv, sem_id, sops, NSEMS, tst_ts_get(tc[n].to)));
41 if (TST_RET == -1) {
42 tst_res(TFAIL | TTERRNO, "semop() failed");
43 return;
44 }
45
46 if (semctl(sem_id, 0, GETALL, get_arr) == -1)
47 tst_brk(TBROK | TERRNO, "semctl(%i, 0, GETALL, ...)", sem_id);
48
49 for (i = 0; i < NSEMS; i++) {
50 if (get_arr.array[i] != i * i) {
51 fail = 1;
52 }
53 }
54
55 if (fail)
56 tst_res(TFAIL, "semaphore values are wrong");
57 else
58 tst_res(TPASS, "semaphore values are correct");
59
60 for (i = 0; i < NSEMS; i++) {
61 if (semctl(sem_id, i, SETVAL, arr) == -1)
62 tst_brk(TBROK | TERRNO, "semctl(%i, %i, SETVAL, ...)", sem_id, i);
63 }
64 }
65
setup(void)66 static void setup(void)
67 {
68 struct time64_variants *tv = &variants[tst_variant];
69 int i;
70
71 tst_res(TINFO, "Testing variant: %s", tv->desc);
72 semop_supported_by_kernel(tv);
73
74 timeout.type = tv->ts_type;
75 tst_ts_set_sec(&timeout, 0);
76 tst_ts_set_nsec(&timeout, 10000);
77
78 semkey = GETIPCKEY();
79
80 sem_id = semget(semkey, PSEMS, IPC_CREAT | IPC_EXCL | SEM_RA);
81 if (sem_id == -1)
82 tst_brk(TBROK | TERRNO, "couldn't create semaphore in setup");
83
84 for (i = 0; i < NSEMS; i++) {
85 sops[i].sem_num = i;
86 sops[i].sem_op = i * i;
87 sops[i].sem_flg = SEM_UNDO;
88 }
89 }
90
cleanup(void)91 static void cleanup(void)
92 {
93 if (sem_id != -1) {
94 if (semctl(sem_id, 0, IPC_RMID) == -1)
95 tst_res(TWARN, "semaphore deletion failed.");
96 }
97 }
98
99 static struct tst_test test = {
100 .test = run,
101 .tcnt = ARRAY_SIZE(tc),
102 .test_variants = ARRAY_SIZE(variants),
103 .setup = setup,
104 .cleanup = cleanup,
105 .needs_tmpdir = 1,
106 };
107