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/*
* This file is part of attach-p-cmd strace test.
*
* Copyright (c) 2016-2021 Dmitry V. Levin <ldv@strace.io>
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <errno.h>
#include <stdio.h>
#include <sys/stat.h>
#include <unistd.h>
#include "attach-p-cmd.h"
static void
write_pidfile(const pid_t pid)
{
FILE *fp = fopen(pidfile, "w");
if (!fp)
perror_msg_and_fail("fopen: %s", pidfile);
if (fprintf(fp, "%d", pid) < 0)
perror_msg_and_fail("fprintf: %s", pidfile);
if (fclose(fp))
perror_msg_and_fail("fclose: %s", pidfile);
}
static void
wait_for_peer_invocation(void)
{
/* wait for the lock directory to be created by peer */
while (rmdir(lockdir)) {
if (ENOENT != errno)
perror_msg_and_fail("rmdir: %s", lockdir);
}
}
int
main(void)
{
const pid_t pid = getpid();
write_pidfile(pid);
wait_for_peer_invocation();
static const char dir[] = "attach-p-cmd.test cmd";
int rc = chdir(dir);
printf("%-5d chdir(\"%s\") = %s\n"
"%-5d +++ exited with 0 +++\n",
pid, dir, sprintrc(rc), pid);
return 0;
}
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