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-rw-r--r--posix/tst-vfork3.c224
1 files changed, 224 insertions, 0 deletions
diff --git a/posix/tst-vfork3.c b/posix/tst-vfork3.c
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+/* Test for vfork functions.
+ Copyright (C) 2007 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#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);
+}