1 /*
2 * Copyright (C) 2016 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
13 * distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <gtest/gtest.h>
30
31 #include <errno.h>
32 #include <sys/sem.h>
33
34 #include <android-base/file.h>
35
TEST(sys_sem,smoke)36 TEST(sys_sem, smoke) {
37 if (semctl(-1, 0, IPC_RMID) == -1 && errno == ENOSYS) {
38 GTEST_SKIP() << "no <sys/sem.h> support in this kernel";
39 }
40
41 // Create a semaphore.
42 TemporaryDir dir;
43 key_t key = ftok(dir.path, 1);
44 int id = semget(key, 1, IPC_CREAT|0666);
45 ASSERT_NE(id, -1);
46
47 // Check semaphore info.
48 semid_ds ds;
49 memset(&ds, 0, sizeof(ds));
50 ASSERT_EQ(0, semctl(id, 0, IPC_STAT, &ds));
51 ASSERT_EQ(1U, ds.sem_nsems);
52
53 ASSERT_EQ(0, semctl(id, 0, GETVAL));
54
55 // Increment.
56 sembuf ops[] = {{ .sem_num = 0, .sem_op = 1, .sem_flg = 0 }};
57 ASSERT_EQ(0, semop(id, ops, 1));
58 ASSERT_EQ(1, semctl(id, 0, GETVAL));
59
60 // Test timeouts.
61 timespec ts = { .tv_sec = 0, .tv_nsec = 100 };
62 ops[0] = { .sem_num = 0, .sem_op = 0, .sem_flg = 0 };
63 errno = 0;
64 ASSERT_EQ(-1, semtimedop(id, ops, 1, &ts));
65 ASSERT_EQ(EAGAIN, errno);
66 ASSERT_EQ(1, semctl(id, 0, GETVAL));
67
68 // Decrement.
69 ops[0] = { .sem_num = 0, .sem_op = -1, .sem_flg = 0 };
70 ASSERT_EQ(0, semop(id, ops, 1));
71 ASSERT_EQ(0, semctl(id, 0, GETVAL));
72
73 // Destroy the semaphore.
74 ASSERT_EQ(0, semctl(id, 0, IPC_RMID));
75 }
76
TEST(sys_sem,semget_failure)77 TEST(sys_sem, semget_failure) {
78 errno = 0;
79 ASSERT_EQ(-1, semget(-1, -1, 0));
80 ASSERT_TRUE(errno == EINVAL || errno == ENOSYS);
81 }
82
TEST(sys_sem,semctl_failure)83 TEST(sys_sem, semctl_failure) {
84 errno = 0;
85 ASSERT_EQ(-1, semctl(-1, 0, IPC_RMID));
86 ASSERT_TRUE(errno == EINVAL || errno == ENOSYS);
87 }
88
TEST(sys_sem,semop_failure)89 TEST(sys_sem, semop_failure) {
90 errno = 0;
91 ASSERT_EQ(-1, semop(-1, nullptr, 0));
92 ASSERT_TRUE(errno == EINVAL || errno == ENOSYS);
93 }
94
TEST(sys_sem,semtimedop_failure)95 TEST(sys_sem, semtimedop_failure) {
96 errno = 0;
97 ASSERT_EQ(-1, semtimedop(-1, nullptr, 0, nullptr));
98 ASSERT_TRUE(errno == EINVAL || errno == ENOSYS);
99 }
100
TEST(sys_sem,union_semun)101 TEST(sys_sem, union_semun) {
102 // https://github.com/android-ndk/ndk/issues/400
103 #if defined(__BIONIC__)
104 semun arg;
105 semid_ds i1;
106 seminfo i2;
107 unsigned short a[] = { 1u, 2u };
108 arg.val = 123;
109 arg.buf = &i1;
110 arg.array = a;
111 arg.__buf = &i2;
112 #else
113 // glibc already mostly removed this cruft (although it's still in <linux/sem.h>).
114 #endif
115 }
116