1 files changed, 93 insertions, 0 deletions
diff --git a/nptl/tst-flock1.c b/nptl/tst-flock1.c
new file mode 100644
index 0000000000..ed2472d3a0
--- /dev/null
+++ b/nptl/tst-flock1.c
@@ -0,0 +1,93 @@
+/* Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@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 <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/file.h>
+
+
+static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
+
+static int fd;
+
+
+static void *
+tf (void *arg)
+{
+  if (flock (fd, LOCK_SH | LOCK_NB) != 0)
+    {
+      puts ("second flock failed");
+      exit (1);
+    }
+
+  pthread_mutex_unlock (&lock);
+
+  return NULL;
+}
+
+
+static int
+do_test (void)
+{
+  char tmp[] = "/tmp/tst-flock1-XXXXXX";
+
+  fd = mkstemp (tmp);
+  if (fd == -1)
+    {
+      puts ("mkstemp failed");
+      exit (1);
+    }
+
+  unlink (tmp);
+
+  write (fd, "foobar xyzzy", 12);
+
+  if (flock (fd, LOCK_EX | LOCK_NB) != 0)
+    {
+      puts ("first flock failed");
+      exit (1);
+    }
+
+  pthread_mutex_lock (&lock);
+
+  pthread_t th;
+  if (pthread_create (&th, NULL, tf, NULL) != 0)
+    {
+      puts ("pthread_create failed");
+      exit (1);
+    }
+
+  pthread_mutex_lock (&lock);
+
+  void *result;
+  if (pthread_join (th, &result) != 0)
+    {
+      puts ("pthread_join failed");
+      exit (1);
+    }
+
+  close (fd);
+
+  return result != NULL;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"