Tests for getppid in MT applications.

1 files changed, 90 insertions, 0 deletions

diff --git a/nptl/tst-fork2.c b/nptl/tst-fork2.c
new file mode 100644
index 0000000000..07d6c22668
--- /dev/null
+++ b/nptl/tst-fork2.c
@@ -0,0 +1,90 @@
+/* Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Roland McGrath <roland@redhat.com>, 2002.
+
+   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 <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/wait.h>
+
+
+static pid_t initial_pid;
+
+
+static void *
+tf (void *arg)
+{
+  if (getppid () != initial_pid)
+    {
+      printf ("getppid in thread returned %ld, expected %ld\n",
+	      (long int) getppid (), (long int) initial_pid);
+      return (void *) -1;
+    }
+
+  return NULL;
+}
+
+
+int
+main (void)
+{
+  initial_pid = getpid ();
+
+  pid_t child = fork ();
+  if (child == 0)
+    {
+      if (getppid () != initial_pid)
+	{
+	  printf ("first getppid returned %ld, expected %ld\n",
+		  (long int) getppid (), (long int) initial_pid);
+	  exit (1);
+	}
+
+      pthread_t th;
+      if (pthread_create (&th, NULL, tf, NULL) != 0)
+	{
+	  puts ("pthread_create failed");
+	  exit (1);
+	}
+
+      void *result;
+      if (pthread_join (th, &result) != 0)
+	{
+	  puts ("pthread_join failed");
+	  exit  (1);
+	}
+
+      exit (result == NULL ? 0 : 1);
+    }
+  else if (child == -1)
+    {
+      puts ("initial fork failed");
+      return 1;
+    }
+
+  int status;
+  if (TEMP_FAILURE_RETRY (waitpid (child, &status, 0)) != child)
+    {
+      printf ("waitpid failed: %m\n");
+      return 1;
+    }
+
+  return status;
+}