From 799c767d319d65c94b3770e82490c8dd4dc80378 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Tue, 2 Nov 1999 18:00:15 +0000
Subject: Split the POSIX semaphore manager into multiple files.

---
 cpukit/posix/src/semunlink.c | 65 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 cpukit/posix/src/semunlink.c

(limited to 'cpukit/posix/src/semunlink.c')

diff --git a/cpukit/posix/src/semunlink.c b/cpukit/posix/src/semunlink.c
new file mode 100644
index 0000000000..7fc2c56a28
--- /dev/null
+++ b/cpukit/posix/src/semunlink.c
@@ -0,0 +1,65 @@
+/*
+ *  $Id$
+ */
+
+#include <stdarg.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <semaphore.h>
+#include <limits.h>
+
+#include <rtems/system.h>
+#include <rtems/score/object.h>
+#include <rtems/posix/semaphore.h>
+#include <rtems/posix/time.h>
+#include <rtems/posix/seterr.h>
+
+/*PAGE
+ *
+ *  11.2.5 Remove a Named Semaphore, P1003.1b-1993, p.225
+ */
+
+int sem_unlink(
+  const char *name
+)
+{
+  int  status;
+  register POSIX_Semaphore_Control *the_semaphore;
+  Objects_Id                        the_semaphore_id;
+  Objects_Locations                 location;
+ 
+  status = _POSIX_Semaphore_Name_to_id( name, &the_semaphore_id );
+   
+  if ( !status )
+    set_errno_and_return_minus_one( status );
+
+  the_semaphore = _POSIX_Semaphore_Get( &the_semaphore_id, &location );
+  switch ( location ) {
+    case OBJECTS_ERROR:
+      set_errno_and_return_minus_one( EINVAL );
+    case OBJECTS_REMOTE:
+      _Thread_Dispatch();
+      return POSIX_MP_NOT_IMPLEMENTED();
+      set_errno_and_return_minus_one( EINVAL );
+    case OBJECTS_LOCAL:
+
+#if defined(RTEMS_MULTIPROCESSING)
+      if ( the_semaphore->process_shared == PTHREAD_PROCESS_SHARED ) {
+        _Objects_MP_Close(
+          &_POSIX_Semaphore_Information,
+          the_semaphore->Object.id
+        );
+      }
+#endif
+
+      the_semaphore->linked = FALSE;
+
+      _POSIX_Semaphore_Delete( the_semaphore );
+
+      _Thread_Enable_dispatch();
+      return 0;
+  }
+  return POSIX_BOTTOM_REACHED();
+}
-- 
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