1 files changed, 64 insertions, 0 deletions
diff --git a/cpukit/posix/src/prwlockunlock.c b/cpukit/posix/src/prwlockunlock.c
new file mode 100644
index 0000000000..665ee1fb34
--- /dev/null
+++ b/cpukit/posix/src/prwlockunlock.c
@@ -0,0 +1,64 @@
+/*
+ *  POSIX RWLock Manager -- Release a lock held on a RWLock Instance
+ *
+ *  COPYRIGHT (c) 1989-2007.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  $Id$
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <pthread.h>
+#include <errno.h>
+
+#include <rtems/system.h>
+#include <rtems/posix/rwlock.h>
+
+/*
+ *  pthread_rwlock_unlock
+ *
+ *  This directive attempts to release a lock on an RWLock.
+ *
+ *  Input parameters:
+ *    rwlock          - pointer to rwlock id
+ *
+ *  Output parameters:
+ *    0          - if successful
+ *    error code - if unsuccessful
+ */
+
+int pthread_rwlock_unlock(
+  pthread_rwlock_t  *rwlock
+)
+{
+  POSIX_RWLock_Control  *the_rwlock;
+  Objects_Locations      location;
+  CORE_RWLock_Status     status;
+
+  if ( !rwlock )
+    return EINVAL;
+
+  the_rwlock = _POSIX_RWLock_Get( rwlock, &location );
+  switch ( location ) {
+
+    case OBJECTS_LOCAL:
+      status = _CORE_RWLock_Release( &the_rwlock->RWLock );
+      _Thread_Enable_dispatch();
+      return _POSIX_RWLock_Translate_core_RWLock_return_code( status );
+
+#if defined(RTEMS_MULTIPROCESSING)
+    case OBJECTS_REMOTE:
+#endif
+    case OBJECTS_ERROR:
+      break;
+  }
+
+  return EINVAL;
+}