118 lines
3.7 KiB
C
118 lines
3.7 KiB
C
/*
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* Copyright (C) 2008 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 <errno.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/resource.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#define CHILD_EXIT_CODE 111
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typedef int (*wait_call_function)(pid_t child_pid);
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static bool check_wait_call(const char *title, wait_call_function wait_func,
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int expected_exit_code) {
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printf("Testing %s(): ", title);
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int cpid = fork();
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if (cpid < 0) {
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fprintf(stderr, "ERROR: fork() failed: %s\n", strerror(errno));
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return false;
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}
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if (cpid == 0) { /* in the chid process */
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printf("Child created pid=%d parent_pid=%d\n", getpid(), getppid());
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exit(expected_exit_code);
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}
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/* in the parent process */
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printf("Parent waiting for child with pid=%d\n", cpid);
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int exit_code = wait_func(cpid);
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if (exit_code < 0)
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return false;
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if (exit_code != expected_exit_code) {
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fprintf(stderr, "ERROR: Child exited with code %d, expected %d\n",
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exit_code, expected_exit_code);
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return false;
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}
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printf("Testing %s(): OK\n", title);
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return true;
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}
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// To be called by check_wait_call() to check wait().
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static int check_wait(pid_t child_pid) {
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int status = 0;
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pid_t ret = wait(&status);
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if (ret != child_pid) {
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fprintf(stderr, "ERROR: wait() returned %d, expected %d\n", ret, child_pid);
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return -1;
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}
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return WEXITSTATUS(status);
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}
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// To be called by check_wait_call() to check waitpid()
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static int check_waitpid(pid_t child_pid) {
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int status = 0;
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pid_t ret = waitpid((pid_t)-1, &status, 0);
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if (ret != child_pid) {
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fprintf(stderr, "ERROR: waitpid() returned %d, expected %d\n", ret, child_pid);
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return -1;
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}
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return WEXITSTATUS(status);
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}
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// To be called by check_wait_call() to check wait3()
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static int check_wait4(pid_t child_pid) {
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int status = 0;
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struct rusage ru;
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pid_t ret = wait4(-1, &status, 0, &ru);
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if (ret != child_pid) {
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fprintf(stderr, "ERROR: wait4() returned %d, expected %d\n", ret, child_pid);
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return -1;
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}
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return WEXITSTATUS(status);
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}
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int main(int argc, char *argv[]) {
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if (!check_wait_call("wait", check_wait, CHILD_EXIT_CODE + 0)) {
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return EXIT_FAILURE;
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}
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if (!check_wait_call("waitpid", check_waitpid, CHILD_EXIT_CODE + 1)) {
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return EXIT_FAILURE;
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}
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if (!check_wait_call("wait4", check_wait4, CHILD_EXIT_CODE + 3)) {
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return EXIT_FAILURE;
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}
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return EXIT_SUCCESS;
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}
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