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glibc/posix/tst-vfork3.c
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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); | |
} |