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/* Test for vfork functions.
Copyright (C) 2007-2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2007.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <fcntl.h>
#include <mcheck.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/wait.h>
static int do_test (void);
static void do_prepare (void);
char *tmpdirname;
#define TEST_FUNCTION do_test ()
#define PREPARE(argc, argv) do_prepare ()
#include "../test-skeleton.c"
static int
do_test (void)
{
mtrace ();
const char *path = getenv ("PATH");
if (path == NULL)
path = "/bin";
char pathbuf[strlen (tmpdirname) + 1 + strlen (path) + 1];
strcpy (stpcpy (stpcpy (pathbuf, tmpdirname), ":"), path);
if (setenv ("PATH", pathbuf, 1) < 0)
{
puts ("setenv failed");
return 1;
}
size_t i;
char *argv[3] = { (char *) "script1.sh", (char *) "1", NULL };
for (i = 0; i < 5; i++)
{
pid_t pid = vfork ();
if (pid < 0)
{
printf ("vfork failed: %m\n");
return 1;
}
else if (pid == 0)
{
execvp ("script1.sh", argv);
_exit (errno);
}
int status;
if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
{
puts ("waitpid failed");
return 1;
}
else if (status != 0)
{
if (WIFEXITED (status))
printf ("script1.sh failed with status %d\n",
WEXITSTATUS (status));
else
printf ("script1.sh kill by signal %d\n",
WTERMSIG (status));
return 1;
}
}
argv[0] = (char *) "script2.sh";
argv[1] = (char *) "2";
for (i = 0; i < 5; i++)
{
pid_t pid = vfork ();
if (pid < 0)
{
printf ("vfork failed: %m\n");
return 1;
}
else if (pid == 0)
{
execvp ("script2.sh", argv);
_exit (errno);
}
int status;
if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
{
puts ("waitpid failed");
return 1;
}
else if (status != 0)
{
printf ("script2.sh failed with status %d\n", status);
return 1;
}
}
for (i = 0; i < 5; i++)
{
pid_t pid = vfork ();
if (pid < 0)
{
printf ("vfork failed: %m\n");
return 1;
}
else if (pid == 0)
{
execlp ("script2.sh", "script2.sh", "3", NULL);
_exit (errno);
}
int status;
if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
{
puts ("waitpid failed");
return 1;
}
else if (status != 0)
{
printf ("script2.sh failed with status %d\n", status);
return 1;
}
}
unsetenv ("PATH");
argv[0] = (char *) "echo";
argv[1] = (char *) "script 4";
for (i = 0; i < 5; i++)
{
pid_t pid = vfork ();
if (pid < 0)
{
printf ("vfork failed: %m\n");
return 1;
}
else if (pid == 0)
{
execvp ("echo", argv);
_exit (errno);
}
int status;
if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
{
puts ("waitpid failed");
return 1;
}
else if (status != 0)
{
printf ("echo failed with status %d\n", status);
return 1;
}
}
return 0;
}
static void
do_prepare (void)
{
size_t len = strlen (test_dir) + sizeof ("/tst-vfork3.XXXXXX");
tmpdirname = malloc (len);
char *script1 = malloc (len + sizeof "/script1.sh");
char *script2 = malloc (len + sizeof "/script2.sh");
if (tmpdirname == NULL || script1 == NULL || script2 == NULL)
{
puts ("out of memory");
exit (1);
}
strcpy (stpcpy (tmpdirname, test_dir), "/tst-vfork3.XXXXXX");
tmpdirname = mkdtemp (tmpdirname);
if (tmpdirname == NULL)
{
puts ("could not create temporary directory");
exit (1);
}
strcpy (stpcpy (script1, tmpdirname), "/script1.sh");
strcpy (stpcpy (script2, tmpdirname), "/script2.sh");
/* Need to make sure tmpdirname is at the end of the linked list. */
add_temp_file (script1);
add_temp_file (tmpdirname);
add_temp_file (script2);
const char content1[] = "#!/bin/sh\necho script $1\n";
int fd = open (script1, O_WRONLY | O_CREAT, 0700);
if (fd < 0
|| TEMP_FAILURE_RETRY (write (fd, content1, sizeof content1))
!= sizeof content1
|| fchmod (fd, S_IRUSR | S_IXUSR) < 0)
{
printf ("Could not write %s\n", script1);
exit (1);
}
close (fd);
const char content2[] = "echo script $1\n";
fd = open (script2, O_WRONLY | O_CREAT, 0700);
if (fd < 0
|| TEMP_FAILURE_RETRY (write (fd, content2, sizeof content2))
!= sizeof content2
|| fchmod (fd, S_IRUSR | S_IXUSR) < 0)
{
printf ("Could not write %s\n", script2);
exit (1);
}
close (fd);
}
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