1 files changed, 75 insertions, 0 deletions
diff --git a/cpukit/posix/src/mqueueunlink.c b/cpukit/posix/src/mqueueunlink.c
new file mode 100644
index 0000000000..67bb26928f
--- /dev/null
+++ b/cpukit/posix/src/mqueueunlink.c
@@ -0,0 +1,75 @@
+/*
+ *  NOTE:  The structure of the routines is identical to that of POSIX
+ *         Message_queues to leave the option of having unnamed message
+ *         queues at a future date.  They are currently not part of the
+ *         POSIX standard but unnamed message_queues are.  This is also
+ *         the reason for the apparently unnecessary tracking of
+ *         the process_shared attribute.  [In addition to the fact that
+ *         it would be trivial to add pshared to the mq_attr structure
+ *         and have process private message queues.]
+ *
+ *         This code ignores the O_RDONLY/O_WRONLY/O_RDWR flag at open
+ *         time.
+ *
+ *  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 <stdarg.h>
+
+#include <pthread.h>
+#include <limits.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <mqueue.h>
+
+#include <rtems/system.h>
+#include <rtems/score/watchdog.h>
+#include <rtems/score/wkspace.h>
+#include <rtems/seterr.h>
+#include <rtems/posix/mqueue.h>
+#include <rtems/posix/time.h>
+
+/*PAGE
+ *
+ *  15.2.2 Remove a Message Queue, P1003.1b-1993, p. 276
+ */
+
+int mq_unlink(
+  const char *name
+)
+{
+  int                                   status;
+  register POSIX_Message_queue_Control *the_mq;
+  Objects_Id                            the_mq_id;
+
+  _Thread_Disable_dispatch();
+
+  status = _POSIX_Message_queue_Name_to_id( name, &the_mq_id );
+   if ( status != 0 ) {
+    _Thread_Enable_dispatch();
+    rtems_set_errno_and_return_minus_one( status );
+   }
+
+  the_mq = (POSIX_Message_queue_Control *) _Objects_Get_local_object(
+    &_POSIX_Message_queue_Information,
+    _Objects_Get_index( the_mq_id )
+  );
+
+  the_mq->linked = false;
+  _POSIX_Message_queue_Namespace_remove( the_mq );
+  _POSIX_Message_queue_Delete( the_mq );
+
+  _Thread_Enable_dispatch();
+  return 0;
+}