1 files changed, 38 insertions, 0 deletions
diff --git a/cpukit/libdrvmgr/drvmgr_lock.c b/cpukit/libdrvmgr/drvmgr_lock.c
new file mode 100644
index 0000000000..d6601d35c9
--- /dev/null
+++ b/cpukit/libdrvmgr/drvmgr_lock.c
@@ -0,0 +1,38 @@
+/* Driver Manager Internal locking implementation
+ *
+ * COPYRIGHT (c) 2009.
+ * Cobham Gaisler AB.
+ *
+ * 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.
+ */
+
+#include <rtems.h>
+#include <drvmgr/drvmgr.h>
+#include "drvmgr_internal.h"
+
+void _DRV_Manager_Lock(void)
+{
+	rtems_semaphore_obtain(drv_mgr.lock, RTEMS_WAIT, RTEMS_NO_TIMEOUT);
+}
+
+void _DRV_Manager_Unlock(void)
+{
+	rtems_semaphore_release(drv_mgr.lock);
+}
+
+int _DRV_Manager_Init_Lock(void)
+{
+	int rc;
+
+	rc = rtems_semaphore_create(
+		rtems_build_name('D', 'R', 'V', 'M'),
+		1,
+		RTEMS_DEFAULT_ATTRIBUTES,
+		0,
+		&drv_mgr.lock);
+	if (rc != RTEMS_SUCCESSFUL)
+		return -1;
+	return 0;
+}