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-rw-r--r--cpukit/posix/src/semclose.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/cpukit/posix/src/semclose.c b/cpukit/posix/src/semclose.c
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+/*
+ * 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 <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/seterr.h>
+
+
+/*PAGE
+ *
+ * sem_close
+ *
+ * Routine to close a semaphore that has been opened or initialized.
+ *
+ * 11.2.4 Close a Named Semaphore, P1003.1b-1993, p.224
+ */
+
+int sem_close(
+ sem_t *sem
+)
+{
+ register POSIX_Semaphore_Control *the_semaphore;
+ Objects_Locations location;
+
+ the_semaphore = _POSIX_Semaphore_Get( sem, &location );
+ switch ( location ) {
+
+ case OBJECTS_LOCAL:
+ the_semaphore->open_count -= 1;
+ _POSIX_Semaphore_Delete( the_semaphore );
+ _Thread_Enable_dispatch();
+ return 0;
+
+#if defined(RTEMS_MULTIPROCESSING)
+ case OBJECTS_REMOTE:
+#endif
+ case OBJECTS_ERROR:
+ break;
+ }
+
+ rtems_set_errno_and_return_minus_one( EINVAL );
+}