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
18static int sem_id = -1;
19static key_t semkey;
20
21static unsigned short int sarr[PSEMS];
22static union semun get_arr = {.array = sarr};
23static struct sembuf sops[PSEMS];
24static struct tst_ts timeout;
25
26static struct test_case_t {
27	struct tst_ts *to;
28} tc[] = {
29	{NULL},
30	{&timeout}
31};
32
33static 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
66static 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
91static 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
99static 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