From cbe5d0b3deec5978a5b0c61371d5c87b9285a0ae Mon Sep 17 00:00:00 2001
From: Florian Forster <octo@collectd.org>
Date: Thu, 2 Feb 2012 17:43:28 +0100
Subject: [PATCH] write_graphite plugin: Don't allocate {Pre,Post}fix if
 unspecified.

Just leave them at NULL and catch this condition in wg_format_name().
---
 src/write_graphite.c | 24 ++++++------------------
 1 file changed, 6 insertions(+), 18 deletions(-)

diff --git a/src/write_graphite.c b/src/write_graphite.c
index c658e207..827ec388 100644
--- a/src/write_graphite.c
+++ b/src/write_graphite.c
@@ -377,6 +377,12 @@ static int wg_format_name (char *ret, int ret_len,
     assert (plugin != NULL);
     assert (type != NULL);
 
+    if (prefix == NULL)
+        prefix = "";
+
+    if (postfix == NULL)
+        postfix = "";
+
     if ((n_hostname = malloc(strlen(hostname)+1)) == NULL)
     {
         ERROR ("Unable to allocate memory for normalized hostname buffer");
@@ -679,24 +685,6 @@ static int wg_config_carbon (oconfig_item_t *ci)
         }
     }
 
-    if (cb->prefix == NULL) {
-        if ((cb->prefix = malloc((int)sizeof(char))) == NULL)
-        {
-            ERROR ("Unable to allocate memory for hostname prefix buffer");
-            return (-1);
-        }
-        cb->prefix[0] = '\0';
-    }
-
-    if (cb->postfix == NULL) {
-        if ((cb->postfix = malloc((int)sizeof(char))) == NULL)
-        {
-            ERROR ("Unable to allocate memory for hostname postfix buffer");
-            return (-1);
-        }
-        cb->postfix[0] = '\0';
-    }
-
     DEBUG ("write_graphite: Registering write callback to carbon agent %s:%s",
             cb->node ? cb->node : WG_DEFAULT_NODE,
             cb->service ? cb->service : WG_DEFAULT_SERVICE);
-- 
2.30.2