--- Net2/sys/syslimits.h	2018/04/24 18:03:58	1.1.1.1
+++ Net2/sys/syslimits.h	2018/04/24 18:16:23	1.1.1.2
@@ -30,9 +30,13 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	@(#)syslimits.h	7.4 (Berkeley) 2/4/91
+ *	from: @(#)syslimits.h	7.4 (Berkeley) 2/4/91
+ *	syslimits.h,v 1.4 1993/05/20 16:23:15 cgd Exp
  */
 
+#ifndef _SYS_SYSLIMITS_H_
+#define _SYS_SYSLIMITS_H_
+
 #define	ARG_MAX		20480	/* max bytes for an exec function */
 #define	CHILD_MAX	40	/* max simultaneous processes */
 #define	LINK_MAX	32767	/* max file link count */
@@ -43,6 +47,7 @@
 #define	OPEN_MAX	64	/* max open files per process */
 #define	PATH_MAX	1024	/* max number of bytes in pathname */
 #define	PIPE_BUF	512	/* max number of bytes for atomic pipe writes */
+#define SSIZE_MAX   INT_MAX /* max number ssize can return */
 
 #define	BC_BASE_MAX	99	/* max ibase/obase values allowed by bc(1) */
 #define	BC_DIM_MAX	2048	/* max array elements allowed by bc(1) */
@@ -52,3 +57,5 @@
 #define	EXPR_NEST_MAX	32	/* max expressions nested in expr(1) */
 #define	LINE_MAX	2048	/* max length in bytes of an input line */
 #define	RE_DUP_MAX	255	/* max repeated RE's using interval notation */
+
+#endif /* !_SYS_SYSLIMITS_H_ */