Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 198 insertions, 0 deletions

diff --git a/REORG.TODO/posix/tst-vfork2.c b/REORG.TODO/posix/tst-vfork2.c
new file mode 100644
index 0000000000..ee0955072d
--- /dev/null
+++ b/REORG.TODO/posix/tst-vfork2.c
@@ -0,0 +1,198 @@
+/* Test for vfork functions.
+   Copyright (C) 2004-2017 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+int raise_fail;
+
+static void
+alrm (int sig)
+{
+  if (raise (SIGUSR1) < 0)
+    raise_fail = 1;
+}
+
+/* This test relies on non-POSIX functionality since the child
+   processes call write, nanosleep and getpid.  */
+static int
+do_test (void)
+{
+  int result = 0;
+  int fd[2];
+
+  signal (SIGUSR1, SIG_IGN);
+
+  struct sigaction sa;
+  sa.sa_handler = alrm;
+  sigemptyset (&sa.sa_mask);
+  sa.sa_flags = 0;
+  if (sigaction (SIGALRM, &sa, NULL) < 0)
+    {
+      puts ("couldn't set up SIGALRM handler");
+      return 1;
+    }
+
+  if (pipe (fd) == -1)
+    {
+      puts ("pipe failed");
+      return 1;
+    }
+
+  struct itimerval it;
+  it.it_value.tv_sec = 0;
+  it.it_value.tv_usec = 200 * 1000;
+  it.it_interval = it.it_value;
+  if (setitimer (ITIMER_REAL, &it, NULL) < 0)
+    {
+      puts ("couldn't set up timer");
+      return 1;
+    }
+
+  /* First vfork() without previous getpid().  */
+  pid_t p1;
+  if ((p1 = vfork ()) == 0)
+    {
+      pid_t p = getpid ();
+
+      struct timespec ts;
+      ts.tv_sec = 1;
+      ts.tv_nsec = 0;
+      TEMP_FAILURE_RETRY (nanosleep (&ts, &ts));
+      _exit (TEMP_FAILURE_RETRY (write (fd[1], &p, sizeof (p))) != sizeof (p));
+    }
+  else if (p1 == -1)
+    {
+      puts ("1st vfork failed");
+      result = 1;
+    }
+
+  memset (&it, 0, sizeof (it));
+  setitimer (ITIMER_REAL, &it, NULL);
+
+  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 (raise_fail)
+    {
+      puts ("raise failed");
+      result = 1;
+    }
+
+  if (result == 0)
+    puts ("All OK");
+
+  return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"