adding zephyr-im master branch

lib/ZClosePort.c

@@ -0,0 +1,29 @@
+/* This file is part of the Project Athena Zephyr Notification System.
+ * It contains source for the ZClosePort function.
+ *
+ *	Created by:	Robert French
+ *
+ *	$Id$
+ *
+ *	Copyright (c) 1987 by the Massachusetts Institute of Technology.
+ *	For copying and distribution information, see the file
+ *	"mit-copyright.h". 
+ */
+
+#include <internal.h>
+
+#ifndef lint
+static const char rcsid_ZClosePort_c[] = "$Id$";
+#endif
+
+Code_t
+ZClosePort(void)
+{
+    if (__Zephyr_fd >= 0 && __Zephyr_open)
+	(void) close(__Zephyr_fd);
+
+    __Zephyr_fd = -1;
+    __Zephyr_open = 0;
+	
+    return (ZERR_NONE);
+}