1 files changed, 150 insertions, 0 deletions
diff --git a/posix/tst-vfork1.c b/posix/tst-vfork1.c
new file mode 100644
index 0000000000..4c2d131a32
--- /dev/null
+++ b/posix/tst-vfork1.c
@@ -0,0 +1,150 @@
+/* Test for chmod functions.
+   Copyright (C) 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.
+
+   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 <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+/* This test relies on non-POSIX functionality since the child
+   processes call write.  */
+static int
+do_test (void)
+{
+  int result = 0;
+  int fd[2];
+
+  if (pipe (fd) == -1)
+    {
+      puts ("pipe failed");
+      return 1;
+    }
+
+  /* First vfork() without previous getpid().  */
+  pid_t p1;
+  if ((p1 = vfork ()) == 0)
+    {
+      pid_t p = getpid ();
+      _exit (TEMP_FAILURE_RETRY (write (fd[1], &p, sizeof (p))) != sizeof (p));
+    }
+  else if (p1 == -1)
+    {
+      puts ("1st vfork failed");
+      result = 1;
+    }
+
+  pid_t p2 = 0;
+  if (TEMP_FAILURE_RETRY (read (fd[0], &p2, sizeof (pid_t))) != sizeof (pid_t))
+    {
+      puts ("1st read failed");
+      result = 1;
+    }
+  int r;
+  if (TEMP_FAILURE_RETRY (waitpid (p1, &r, 0)) != p1)
+    {
+      puts ("1st waitpid failed");
+      result = 1;
+    }
+  else if (r != 0)
+    {
+      puts ("write in 1st child failed");
+      result = 1;
+    }
+
+  /* Main process' ID.  */
+  pid_t p0 = getpid ();
+
+  /* vfork() again, but after a getpid() in the main process.  */
+  pid_t p3;
+  if ((p3 = vfork ()) == 0)
+    {
+      pid_t p = getpid ();
+      _exit (TEMP_FAILURE_RETRY (write (fd[1], &p, sizeof (p))) != sizeof (p));
+    }
+  else if (p1 == -1)
+    {
+      puts ("2nd vfork failed");
+      result = 1;
+    }
+
+  pid_t p4;
+  if (TEMP_FAILURE_RETRY (read (fd[0], &p4, sizeof (pid_t))) != sizeof (pid_t))
+    {
+      puts ("2nd read failed");
+      result = 1;
+    }
+  if (TEMP_FAILURE_RETRY (waitpid (p3, &r, 0)) != p3)
+    {
+      puts ("2nd waitpid failed");
+      result = 1;
+    }
+  else if (r != 0)
+    {
+      puts ("write in 2nd child failed");
+      result = 1;
+    }
+
+  /* And getpid in the main process again.  */
+  pid_t p5 = getpid ();
+
+  /* Analysis of the results.  */
+  if (p0 != p5)
+    {
+      printf ("p0(%ld) != p5(%ld)\n", (long int) p0, (long int) p5);
+      result = 1;
+    }
+
+  if (p0 == p1)
+    {
+      printf ("p0(%ld) == p1(%ld)\n", (long int) p0, (long int) p1);
+      result = 1;
+    }
+
+  if (p1 != p2)
+    {
+      printf ("p1(%ld) != p2(%ld)\n", (long int) p1, (long int) p2);
+      result = 1;
+    }
+
+  if (p0 == p3)
+    {
+      printf ("p0(%ld) == p3(%ld)\n", (long int) p0, (long int) p3);
+      result = 1;
+    }
+
+  if (p3 != p4)
+    {
+      printf ("p3(%ld) != p4(%ld)\n", (long int) p3, (long int) p4);
+      result = 1;
+    }
+
+  close (fd[0]);
+  close (fd[1]);
+
+  if (result == 0)
+    puts ("All OK");
+
+  return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"