mirror of
https://github.com/facebookexperimental/reverie.git
synced 2025-02-03 18:47:50 +00:00
44 lines
1 KiB
C
44 lines
1 KiB
C
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/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#include <errno.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/stat.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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int main(int argc, char* argv[], char* envp[]) {
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if (argc == 2 && strcmp(argv[1], "child") == 0) {
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printf("exec pid: %u\n", getpid());
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_exit(0);
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}
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pid_t pid = fork();
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if (pid < 0) {
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perror("fork failed: ");
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exit(1);
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} else if (pid == 0) {
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char* prog = argv[0];
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char* const newArgv[] = {prog, "child", NULL};
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printf("child pid: %u\n", getpid());
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execve(prog, newArgv, envp);
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printf("exec failed: %s\n", strerror(errno));
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} else {
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int status;
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printf("parent pid: %u\n", getpid());
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waitpid(pid, &status, 0);
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if (WIFSIGNALED(status)) {
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printf("%u terminated by signal: %u\n", pid, WTERMSIG(status));
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}
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}
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}
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