add hook

Author: leiffyli

co_hook_sys_call.cpp

@@ -822,6 +822,18 @@ struct hostent *gethostbyname(const char *name)
 }
 
 
+struct hostent* co_gethostbyname(const char *name);
+
+struct hostent *gethostbyname(const char *name)
+{
+    HOOK_SYS_FUNC( gethostbyname );
+    if (!co_is_enable_sys_hook())
+    {   
+        return g_sys_gethostbyname_func(name);
+    }   
+    return co_gethostbyname(name);
+}
+
 struct res_state_wrap
 {
 	struct __res_state state;