X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Frrdtool.c;h=3cd6d6bb6807b842407f79e5760c4708d78a9a0e;hb=42ca41a0798e3a2b742f7da3bacc03fbaf6175fa;hp=9b5723ad2992c4d3cdcaa448c9462afead768866;hpb=f701e685eab83f37ecc6501d7dbe4eb941a454bb;p=collectd.git

diff --git a/src/rrdtool.c b/src/rrdtool.c
index 9b5723ad..3cd6d6bb 100644
--- a/src/rrdtool.c
+++ b/src/rrdtool.c
@@ -166,7 +166,7 @@ static int srrd_update (char *filename, char *template,
 	assert (template == NULL);
 
 	new_argc = 2 + argc;
-	new_argv = (char **) malloc ((new_argc + 1) * sizeof (char *));
+	new_argv = malloc ((new_argc + 1) * sizeof (*new_argv));
 	if (new_argv == NULL)
 	{
 		ERROR ("rrdtool plugin: malloc failed.");
@@ -204,7 +204,7 @@ static int value_list_to_string_multiple (char *buffer, int buffer_len,
 	int offset;
 	int status;
 	time_t tt;
-	int i;
+	size_t i;
 
 	memset (buffer, '\0', buffer_len);
 
@@ -442,7 +442,7 @@ static void *rrd_queue_thread (void __attribute__((unused)) *data)
 		}
 
 		/* Update `tv_next_update' */
-		if (write_rate > 0.0) 
+		if (write_rate > 0.0)
                 {
                   gettimeofday (&tv_now, /* timezone = */ NULL);
                   tv_next_update.tv_sec = tv_now.tv_sec;
@@ -480,7 +480,7 @@ static int rrd_queue_enqueue (const char *filename,
 {
   rrd_queue_t *queue_entry;
 
-  queue_entry = (rrd_queue_t *) malloc (sizeof (rrd_queue_t));
+  queue_entry = malloc (sizeof (*queue_entry));
   if (queue_entry == NULL)
     return (-1);
 
@@ -522,7 +522,7 @@ static int rrd_queue_dequeue (const char *filename,
   {
     if (strcmp (this->filename, filename) == 0)
       break;
-    
+
     prev = this;
     this = this->next;
   }
@@ -588,7 +588,7 @@ static void rrd_cache_flush (cdtime_t timeout)
 		}
 		else /* ancient and no values -> waste of memory */
 		{
-			char **tmp = (char **) realloc ((void *) keys,
+			char **tmp = realloc (keys,
 					(keys_num + 1) * sizeof (char *));
 			if (tmp == NULL)
 			{
@@ -607,7 +607,7 @@ static void rrd_cache_flush (cdtime_t timeout)
 		}
 	} /* while (c_avl_iterator_next) */
 	c_avl_iterator_destroy (iter);
-	
+
 	for (i = 0; i < keys_num; i++)
 	{
 		if (c_avl_remove (cache, keys[i], (void *) &key, (void *) &rc) != 0)
@@ -756,7 +756,7 @@ static int rrd_cache_insert (const char *filename,
 		return (-1);
 	}
 
-	values_new = (char **) realloc ((void *) rc->values,
+	values_new = realloc ((void *) rc->values,
 			(rc->values_num + 1) * sizeof (char *));
 	if (values_new == NULL)
 	{
@@ -1008,23 +1008,36 @@ static int rrd_config (const char *key, const char *value)
 	}
 	else if (strcasecmp ("DataDir", key) == 0)
 	{
-		if (datadir != NULL)
-			free (datadir);
-		datadir = strdup (value);
+		char *tmp;
+		size_t len;
+
+		tmp = strdup (value);
+		if (tmp == NULL)
+		{
+			ERROR ("rrdtool plugin: strdup failed.");
+			return (1);
+		}
+
+		len = strlen (tmp);
+		while ((len > 0) && (tmp[len - 1] == '/'))
+		{
+			len--;
+			tmp[len] = 0;
+		}
+
+		if (len == 0)
+		{
+			ERROR ("rrdtool plugin: Invalid \"DataDir\" option.");
+			sfree (tmp);
+			return (1);
+		}
+
 		if (datadir != NULL)
 		{
-			int len = strlen (datadir);
-			while ((len > 0) && (datadir[len - 1] == '/'))
-			{
-				len--;
-				datadir[len] = '\0';
-			}
-			if (len <= 0)
-			{
-				free (datadir);
-				datadir = NULL;
-			}
+			sfree (datadir);
 		}
+
+		datadir = tmp;
 	}
 	else if (strcasecmp ("StepSize", key) == 0)
 	{
@@ -1074,7 +1087,7 @@ static int rrd_config (const char *key, const char *value)
 		while ((ptr = strtok_r (dummy, ", \t", &saveptr)) != NULL)
 		{
 			dummy = NULL;
-			
+
 			tmp_alloc = realloc (rrdcreate_config.timespans,
 					sizeof (int) * (rrdcreate_config.timespans_num + 1));
 			if (tmp_alloc == NULL)