--- mstools/h/limits.h	2018/08/09 18:20:01	1.1
+++ mstools/h/limits.h	2018/08/09 18:21:13	1.1.1.3
@@ -34,5 +34,35 @@
 #define LONG_MAX	  2147483647	/* maximum (signed) long value */
 #define ULONG_MAX	  0xffffffff	/* maximum unsigned long value */
 
+#ifdef _POSIX_
+
+#define _POSIX_ARG_MAX          16384
+#define _POSIX_CHILD_MAX        6
+#define _POSIX_LINK_MAX         8
+#define _POSIX_MAX_CANON        255
+#define _POSIX_MAX_INPUT        255
+#define _POSIX_NAME_MAX         14
+#define _POSIX_NGROUPS_MAX      0
+#define _POSIX_OPEN_MAX         16
+#define _POSIX_PATH_MAX         255
+#define _POSIX_PIPE_BUF         512
+
+
+#define NGROUPS_MAX             _POSIX_NGROUPS_MAX
+
+
+#define ARG_MAX                 _POSIX_ARG_MAX
+#define CHILD_MAX               _POSIX_CHILD_MAX
+#define OPEN_MAX                _POSIX_OPEN_MAX
+
+#define LINK_MAX                _POSIX_LINK_MAX
+#define MAX_CANON               _POSIX_MAX_CANON
+#define MAX_INPUT               _POSIX_MAX_INPUT
+#define NAME_MAX                _POSIX_NAME_MAX
+#define PATH_MAX                _POSIX_PATH_MAX
+#define PIPE_BUF                _POSIX_PIPE_BUF
+
+#endif /* POSIX */
+
 #define _INC_LIMITS
 #endif	/* _INC_LIMITS */