497ad30d7d
This is a bit bogus because it's been removed from glibc (though not thoroughly) and is never useful on Android (because the system calls in question are compiled out of Android kernels, and SELinux would disallow them even if you weren't running an Android kernel). This also means that on glibc you need to include <linux/sem.h> for this and on bionic you need <sys/sem.h> (and for either if you #include the other file, you won't get this union). Bug: https://github.com/android-ndk/ndk/issues/400 Test: added new test Change-Id: I47f721da77515531f616d6ad8479bfbc9b60ee47
116 lines
3.5 KiB
C++
116 lines
3.5 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 "TemporaryFile.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_LOG_(INFO) << "no <sys/sem.h> support in this kernel\n";
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return;
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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.dirname, 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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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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}
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TEST(sys_sem, semtimedop_failure) {
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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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}
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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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