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Diffstat (limited to 'sys/sys/errno.h')
-rw-r--r--sys/sys/errno.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/sys/errno.h b/sys/sys/errno.h
index 96d52f323b0c..3bac4ed751de 100644
--- a/sys/sys/errno.h
+++ b/sys/sys/errno.h
@@ -36,9 +36,12 @@
* SUCH DAMAGE.
*
* @(#)errno.h 8.5 (Berkeley) 1/21/94
- * $Id$
+ * $Id: errno.h,v 1.2 1994/08/02 07:52:54 davidg Exp $
*/
+#ifndef _SYS_ERRNO_H_
+#define _SYS_ERRNO_H_
+
#ifndef KERNEL
extern int errno; /* global error number */
#endif
@@ -162,3 +165,5 @@ extern int errno; /* global error number */
#define ERESTART -1 /* restart syscall */
#define EJUSTRETURN -2 /* don't modify regs, just return */
#endif
+
+#endif