[PATCH] POSIX01: implement mandatory constants in limits.h

Implement mandatory _POSIX_SYMLOOP_MAX and _POSIX_HOST_NAME_MAX constants. So,
MAXSYMLINKS and MAXHOSTNAMELEN should be synchronized somehow with them.
---
 include/limits.h |    2 ++
 sys/sys/param.h  |    3 +++
 2 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/include/limits.h b/include/limits.h
index ea8d96d..7a1985b 100644
--- a/include/limits.h
+++ b/include/limits.h
@@ -42,6 +42,7 @@
 #define	_POSIX_AIO_MAX		1
 #define	_POSIX_ARG_MAX		4096
 #define	_POSIX_CHILD_MAX	25
+#define	_POSIX_HOST_NAME_MAX	255
 #define	_POSIX_LINK_MAX		8
 #define	_POSIX_LOGIN_NAME_MAX	9
 #define	_POSIX_MAX_CANON	255
@@ -57,6 +58,7 @@
 #define	_POSIX_SSIZE_MAX	32767
 #define	_POSIX_STREAM_MAX	8
 #define	_POSIX_SYMLINK_MAX	255
+#define	_POSIX_SYMLOOP_MAX	8
 #define	_POSIX_THREAD_DESTRUCTOR_ITERATIONS	4
 #define	_POSIX_THREAD_KEYS_MAX	128
 #define	_POSIX_THREAD_THREADS_MAX		64
diff --git a/sys/sys/param.h b/sys/sys/param.h
index 561938b..e97e885 100644
--- a/sys/sys/param.h
+++ b/sys/sys/param.h
@@ -94,6 +94,7 @@
  * Redefined constants are from POSIX 1003.1 limits file.
  *
  * MAXCOMLEN should be >= sizeof(ac_comm) (see <acct.h>)
+ * MAXHOSTNAMELEN should be >= (_POSIX_HOST_NAME_MAX + 1) (see <limits.h>)
  * MAXLOGNAME should be >= UT_NAMESIZE (see <utmp.h>)
  */
 #include <sys/syslimits.h>
@@ -310,6 +311,8 @@
  * maximum number of symbolic links that may be expanded in a path name.
  * It should be set high enough to allow all legitimate uses, but halt
  * infinite loops reasonably quickly.
+ *
+ * MAXSYMLINKS should be >= _POSIX_SYMLOOP_MAX (see <limits.h>)
  */
 #define	MAXPATHLEN	PATH_MAX
 #define	MAXSYMLINKS	32
-- 
1.5.2.5