[MINOR] export the hostname variable so that all the code can access it

The hostname variable will be used later, export it.
(cherry picked from commit 3ad6a7640b)

include/common/defaults.h

@@ -179,4 +179,9 @@
 #define MAX_SIGNAL 256
 #endif
 
+/* Maximum host name length */
+#ifndef MAX_HOSTNAME_LEN
+#define MAX_HOSTNAME_LEN	32
+#endif
+
 #endif /* _COMMON_DEFAULTS_H */

include/types/global.h

@@ -95,6 +95,7 @@ extern const int zero;
 extern const int one;
 extern const struct linger nolinger;
 extern int stopping;	/* non zero means stopping in progress */
+extern char hostname[MAX_HOSTNAME_LEN];
 
 #endif /* _TYPES_GLOBAL_H */
 

src/haproxy.c

@@ -152,12 +152,7 @@ const int zero = 0;
 const int one = 1;
 const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
 
-/*
- * Syslog facilities and levels. Conforming to RFC3164.
- */
-
-#define MAX_HOSTNAME_LEN	32
-static char hostname[MAX_HOSTNAME_LEN] = "";
+char hostname[MAX_HOSTNAME_LEN] = "";
 
 
 /*********************************************************************/