limits.h: add define for HOST_NAME_MAX
according to the rules defined here:
http://pubs.opengroup.org/onlinepubs/009695399/basedefs/limits.h.html
add the definition for HOST_NAME_MAX to limits.h file,
and set the default value to _POSIX_HOST_NAME_MAX as 255
Change-Id: Iddd5c6c569f4e0a14994c7a7c54985f3e7809fc4
Signed-off-by: Yongqin Liu <yongqin.liu@linaro.org>
diff --git a/libc/include/machine/posix_limits.h b/libc/include/machine/posix_limits.h
index f906e3b..f092731 100644
--- a/libc/include/machine/posix_limits.h
+++ b/libc/include/machine/posix_limits.h
@@ -37,6 +37,7 @@
#define _POSIX_CHOWN_RESTRICTED 1 /* yes, chown requires appropriate privileges */
#define _POSIX_FSYNC 1 /* fdatasync() supported */
#define _POSIX_JOB_CONTROL 1 /* job control is a Linux feature */
+#define _POSIX_HOST_NAME_MAX 255
#define _POSIX_LINK_MAX 8
#define _POSIX_LOGIN_NAME_MAX 9 /* includes trailing NUL */
#define _POSIX_MAPPED_FILES 1 /* mmap-ed files supported */