blob: bcd1cc2d585fc5bfe8d520e193d0b2c83ebe52e9 [file] [log] [blame]
/*
* Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "tests.h"
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/wait.h>
static inline int
logit(const char *const str)
{
return pwrite(-1, str, strlen(str), 0) >= 0;
}
int main(int ac, char **av, char **ep)
{
if (ac < 1)
return 1;
if (ac > 1) {
if (read(0, &ac, sizeof(int)))
return 2;
return logit(av[1]);
}
logit("start");
int fds[2];
(void) close(0);
if (pipe(fds)) {
perror("pipe");
return 77;
}
if (fcntl(fds[1], F_SETFD, FD_CLOEXEC)) {
perror("fcntl");
return 77;
}
char *const args[] = { av[0], (char *) "exec", NULL };
pid_t pid = vfork();
if (pid < 0) {
perror("vfork");
return 77;
}
if (!pid) {
if (logit("child") || execve(args[0], args, args + 1))
_exit(2);
}
close(0);
logit("parent");
close(fds[1]);
int status;
if (wait(&status) != pid) {
perror("wait");
return 77;
}
if (status) {
fprintf(stderr, "status = %d\n", status);
return 77;
}
logit("finish");
pid_t ppid = getpid();
close(-1);
printf("%-5d pwrite64(-1, \"start\", 5, 0) = -1 EBADF (%m)\n"
"%-5d pwrite64(-1, \"child\", 5, 0) = -1 EBADF (%m)\n"
"%-5d pwrite64(-1, \"parent\", 6, 0) = -1 EBADF (%m)\n"
"%-5d pwrite64(-1, \"exec\", 4, 0) = -1 EBADF (%m)\n"
"%-5d pwrite64(-1, \"finish\", 6, 0) = -1 EBADF (%m)\n",
ppid, pid, ppid, pid, ppid);
return 0;
}