121 lines
3.6 KiB
C++
121 lines
3.6 KiB
C++
/*
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* Copyright (C) 2016 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <gtest/gtest.h>
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#include <errno.h>
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#include <sys/sem.h>
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#include <android-base/file.h>
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TEST(sys_sem, smoke) {
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if (semctl(-1, 0, IPC_RMID) == -1 && errno == ENOSYS) {
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GTEST_SKIP() << "no <sys/sem.h> support in this kernel";
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}
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// Create a semaphore.
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TemporaryDir dir;
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key_t key = ftok(dir.path, 1);
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int id = semget(key, 1, IPC_CREAT|0666);
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ASSERT_NE(id, -1);
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// Check semaphore info.
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semid_ds ds;
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memset(&ds, 0, sizeof(ds));
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ASSERT_EQ(0, semctl(id, 0, IPC_STAT, &ds));
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ASSERT_EQ(1U, ds.sem_nsems);
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ASSERT_EQ(0, semctl(id, 0, GETVAL));
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// Increment.
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sembuf ops[] = {{ .sem_num = 0, .sem_op = 1, .sem_flg = 0 }};
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ASSERT_EQ(0, semop(id, ops, 1));
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ASSERT_EQ(1, semctl(id, 0, GETVAL));
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// Test timeouts.
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timespec ts = { .tv_sec = 0, .tv_nsec = 100 };
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ops[0] = { .sem_num = 0, .sem_op = 0, .sem_flg = 0 };
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errno = 0;
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ASSERT_EQ(-1, semtimedop(id, ops, 1, &ts));
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ASSERT_EQ(EAGAIN, errno);
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ASSERT_EQ(1, semctl(id, 0, GETVAL));
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// Decrement.
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ops[0] = { .sem_num = 0, .sem_op = -1, .sem_flg = 0 };
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ASSERT_EQ(0, semop(id, ops, 1));
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ASSERT_EQ(0, semctl(id, 0, GETVAL));
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// Destroy the semaphore.
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ASSERT_EQ(0, semctl(id, 0, IPC_RMID));
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}
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TEST(sys_sem, semget_failure) {
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errno = 0;
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ASSERT_EQ(-1, semget(-1, -1, 0));
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ASSERT_TRUE(errno == EINVAL || errno == ENOSYS);
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}
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TEST(sys_sem, semctl_failure) {
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errno = 0;
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ASSERT_EQ(-1, semctl(-1, 0, IPC_RMID));
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ASSERT_TRUE(errno == EINVAL || errno == ENOSYS);
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}
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TEST(sys_sem, semop_failure) {
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wnonnull"
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errno = 0;
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ASSERT_EQ(-1, semop(-1, nullptr, 0));
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ASSERT_TRUE(errno == EINVAL || errno == ENOSYS);
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#pragma clang diagnostic pop
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}
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TEST(sys_sem, semtimedop_failure) {
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wnonnull"
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errno = 0;
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ASSERT_EQ(-1, semtimedop(-1, nullptr, 0, nullptr));
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ASSERT_TRUE(errno == EINVAL || errno == ENOSYS);
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#pragma clang diagnostic pop
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}
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TEST(sys_sem, union_semun) {
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// https://github.com/android-ndk/ndk/issues/400
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#if defined(__BIONIC__)
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semun arg;
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semid_ds i1;
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seminfo i2;
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unsigned short a[] = { 1u, 2u };
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arg.val = 123;
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arg.buf = &i1;
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arg.array = a;
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arg.__buf = &i2;
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#else
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// glibc already mostly removed this cruft (although it's still in <linux/sem.h>).
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#endif
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}
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