2 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 logit_(const char *const str)
41 #define prefix "fork-f."
42 #define logit(arg) logit_(prefix arg)
44 int main(int ac, char **av)
53 int child_wait_fds[2];
55 if (pipe(child_wait_fds))
56 perror_msg_and_fail("pipe");
61 perror_msg_and_fail("fork");
64 close(child_wait_fds[1]);
66 if (read(0, child_wait_fds, sizeof(int)))
69 char *const args[] = { av[0], (char *) "", NULL };
70 if (logit("child") || execve(args[0], args, args + 1))
77 close(child_wait_fds[1]);
80 assert(wait(&status) == pid);
83 pid_t ppid = getpid();
86 printf("%-5d chdir(\"%sstart\") = -1 ENOENT (%m)\n"
87 "%-5d chdir(\"%sparent\") = -1 ENOENT (%m)\n"
88 "%-5d chdir(\"%schild\") = -1 ENOENT (%m)\n"
89 "%-5d chdir(\"%sexec\") = -1 ENOENT (%m)\n"
90 "%-5d chdir(\"%sfinish\") = -1 ENOENT (%m)\n",