From: Ruben Kerkhof <ruben@rubenkerkhof.com>
Date: Mon, 28 Mar 2016 17:56:13 +0000 (+0200)
Subject: daemon: malloc + memset -> calloc
X-Git-Tag: collectd-5.6.0~371^2~45
X-Git-Url: https://git.octo.it/?p=collectd.git;a=commitdiff_plain;h=91103db5378a036c0e4da9d512f686d9d0096ff7

daemon: malloc + memset -> calloc
---

diff --git a/src/daemon/common.c b/src/daemon/common.c
index 2f6da957..7b7353d9 100644
--- a/src/daemon/common.c
+++ b/src/daemon/common.c
@@ -115,10 +115,9 @@ char *ssnprintf_alloc (char const *format, ...) /* {{{ */
 		return (strdup (static_buffer));
 
 	/* Allocate a buffer large enough to hold the string. */
-	alloc_buffer = malloc (alloc_buffer_size);
+	alloc_buffer = calloc (1, alloc_buffer_size);
 	if (alloc_buffer == NULL)
 		return (NULL);
-	memset (alloc_buffer, 0, alloc_buffer_size);
 
 	/* Print again into this new buffer. */
 	va_start (ap, format);
@@ -409,10 +408,9 @@ int escape_string (char *buffer, size_t buffer_size)
   if (buffer_size < 3)
     return (EINVAL);
 
-  temp = malloc (buffer_size);
+  temp = calloc (1, buffer_size);
   if (temp == NULL)
     return (ENOMEM);
-  memset (temp, 0, buffer_size);
 
   temp[0] = '"';
   j = 1;
diff --git a/src/daemon/configfile.c b/src/daemon/configfile.c
index 5f49a9e6..78d4eea8 100644
--- a/src/daemon/configfile.c
+++ b/src/daemon/configfile.c
@@ -717,14 +717,13 @@ static oconfig_item_t *cf_read_dir (const char *dir,
 		return (NULL);
 	}
 
-	root = malloc (sizeof (*root));
+	root = calloc (1, sizeof (*root));
 	if (root == NULL)
 	{
-		ERROR ("configfile: malloc failed.");
+		ERROR ("configfile: calloc failed.");
 		closedir (dh);
 		return (NULL);
 	}
-	memset (root, 0, sizeof (oconfig_item_t));
 
 	while ((de = readdir (dh)) != NULL)
 	{
@@ -835,13 +834,12 @@ static oconfig_item_t *cf_read_generic (const char *path,
 		return (NULL);
 	}
 
-	root = malloc (sizeof (*root));
+	root = calloc (1, sizeof (*root));
 	if (root == NULL)
 	{
-		ERROR ("configfile: malloc failed.");
+		ERROR ("configfile: calloc failed.");
 		return (NULL);
 	}
-	memset (root, '\0', sizeof (oconfig_item_t));
 
 	/* wordexp() might return a sorted list already. That's not
 	 * documented though, so let's make sure we get what we want. */
diff --git a/src/daemon/filter_chain.c b/src/daemon/filter_chain.c
index b599d70e..babf3996 100644
--- a/src/daemon/filter_chain.c
+++ b/src/daemon/filter_chain.c
@@ -235,13 +235,12 @@ static int fc_config_add_match (fc_match_t **matches_head, /* {{{ */
     return (-1);
   }
 
-  m = malloc (sizeof (*m));
+  m = calloc (1, sizeof (*m));
   if (m == NULL)
   {
-    ERROR ("fc_config_add_match: malloc failed.");
+    ERROR ("fc_config_add_match: calloc failed.");
     return (-1);
   }
-  memset (m, 0, sizeof (*m));
 
   sstrncpy (m->name, ptr->name, sizeof (m->name));
   memcpy (&m->proc, &ptr->proc, sizeof (m->proc));
@@ -307,13 +306,12 @@ static int fc_config_add_target (fc_target_t **targets_head, /* {{{ */
     return (-1);
   }
 
-  t = malloc (sizeof (*t));
+  t = calloc (1, sizeof (*t));
   if (t == NULL)
   {
-    ERROR ("fc_config_add_target: malloc failed.");
+    ERROR ("fc_config_add_target: calloc failed.");
     return (-1);
   }
-  memset (t, 0, sizeof (*t));
 
   sstrncpy (t->name, ptr->name, sizeof (t->name));
   memcpy (&t->proc, &ptr->proc, sizeof (t->proc));
@@ -373,14 +371,12 @@ static int fc_config_add_rule (fc_chain_t *chain, /* {{{ */
     return (-1);
   }
 
-  rule = malloc (sizeof (*rule));
+  rule = calloc (1, sizeof (*rule));
   if (rule == NULL)
   {
-    ERROR ("fc_config_add_rule: malloc failed.");
+    ERROR ("fc_config_add_rule: calloc failed.");
     return (-1);
   }
-  memset (rule, 0, sizeof (*rule));
-  rule->next = NULL;
 
   if (ci->values_num == 1)
   {
@@ -469,17 +465,13 @@ static int fc_config_add_chain (const oconfig_item_t *ci) /* {{{ */
 
   if (chain == NULL)
   {
-    chain = malloc (sizeof (*chain));
+    chain = calloc (1, sizeof (*chain));
     if (chain == NULL)
     {
-      ERROR ("fc_config_add_chain: malloc failed.");
+      ERROR ("fc_config_add_chain: calloc failed.");
       return (-1);
     }
-    memset (chain, 0, sizeof (*chain));
     sstrncpy (chain->name, ci->values[0].value.string, sizeof (chain->name));
-    chain->rules = NULL;
-    chain->targets = NULL;
-    chain->next = NULL;
   }
 
   for (i = 0; i < ci->children_num; i++)
@@ -824,14 +816,12 @@ int fc_register_match (const char *name, match_proc_t proc) /* {{{ */
 
   DEBUG ("fc_register_match (%s);", name);
 
-  m = malloc (sizeof (*m));
+  m = calloc (1, sizeof (*m));
   if (m == NULL)
     return (-ENOMEM);
-  memset (m, 0, sizeof (*m));
 
   sstrncpy (m->name, name, sizeof (m->name));
   memcpy (&m->proc, &proc, sizeof (m->proc));
-  m->next = NULL;
 
   if (match_list_head == NULL)
   {
@@ -858,14 +848,12 @@ int fc_register_target (const char *name, target_proc_t proc) /* {{{ */
 
   DEBUG ("fc_register_target (%s);", name);
 
-  t = malloc (sizeof (*t));
+  t = calloc (1, sizeof (*t));
   if (t == NULL)
     return (-ENOMEM);
-  memset (t, 0, sizeof (*t));
 
   sstrncpy (t->name, name, sizeof (t->name));
   memcpy (&t->proc, &proc, sizeof (t->proc));
-  t->next = NULL;
 
   if (target_list_head == NULL)
   {
diff --git a/src/daemon/meta_data.c b/src/daemon/meta_data.c
index 10678640..cb8a195c 100644
--- a/src/daemon/meta_data.c
+++ b/src/daemon/meta_data.c
@@ -84,13 +84,12 @@ static meta_entry_t *md_entry_alloc (const char *key) /* {{{ */
 {
   meta_entry_t *e;
 
-  e = malloc (sizeof (*e));
+  e = calloc (1, sizeof (*e));
   if (e == NULL)
   {
-    ERROR ("md_entry_alloc: malloc failed.");
+    ERROR ("md_entry_alloc: calloc failed.");
     return (NULL);
   }
-  memset (e, 0, sizeof (*e));
 
   e->key = md_strdup (key);
   if (e->key == NULL)
@@ -220,15 +219,13 @@ meta_data_t *meta_data_create (void) /* {{{ */
 {
   meta_data_t *md;
 
-  md = malloc (sizeof (*md));
+  md = calloc (1, sizeof (*md));
   if (md == NULL)
   {
-    ERROR ("meta_data_create: malloc failed.");
+    ERROR ("meta_data_create: calloc failed.");
     return (NULL);
   }
-  memset (md, 0, sizeof (*md));
 
-  md->head = NULL;
   pthread_mutex_init (&md->lock, /* attr = */ NULL);
 
   return (md);
diff --git a/src/daemon/plugin.c b/src/daemon/plugin.c
index 6c8b6b0e..e5939395 100644
--- a/src/daemon/plugin.c
+++ b/src/daemon/plugin.c
@@ -368,13 +368,12 @@ static int create_register_callback (llist_t **list, /* {{{ */
 {
 	callback_func_t *cf;
 
-	cf = malloc (sizeof (*cf));
+	cf = calloc (1, sizeof (*cf));
 	if (cf == NULL)
 	{
-		ERROR ("plugin: create_register_callback: malloc failed.");
+		ERROR ("plugin: create_register_callback: calloc failed.");
 		return (-1);
 	}
-	memset (cf, 0, sizeof (*cf));
 
 	cf->cf_callback = callback;
 	if (ud == NULL)
@@ -1244,14 +1243,13 @@ int plugin_register_read (const char *name,
 	read_func_t *rf;
 	int status;
 
-	rf = malloc (sizeof (*rf));
+	rf = calloc (1, sizeof (*rf));
 	if (rf == NULL)
 	{
-		ERROR ("plugin_register_read: malloc failed.");
+		ERROR ("plugin_register_read: calloc failed.");
 		return (ENOMEM);
 	}
 
-	memset (rf, 0, sizeof (read_func_t));
 	rf->rf_callback = (void *) callback;
 	rf->rf_udata.data = NULL;
 	rf->rf_udata.free_func = NULL;
@@ -1278,14 +1276,13 @@ int plugin_register_complex_read (const char *group, const char *name,
 	read_func_t *rf;
 	int status;
 
-	rf = malloc (sizeof (*rf));
+	rf = calloc (1,sizeof (*rf));
 	if (rf == NULL)
 	{
-		ERROR ("plugin_register_complex_read: malloc failed.");
+		ERROR ("plugin_register_complex_read: calloc failed.");
 		return (ENOMEM);
 	}
 
-	memset (rf, 0, sizeof (read_func_t));
 	rf->rf_callback = (void *) callback;
 	if (group != NULL)
 		sstrncpy (rf->rf_group, group, sizeof (rf->rf_group));
@@ -2578,13 +2575,12 @@ static int plugin_notification_meta_add (notification_t *n,
     return (-1);
   }
 
-  meta = malloc (sizeof (*meta));
+  meta = calloc (1, sizeof (*meta));
   if (meta == NULL)
   {
-    ERROR ("plugin_notification_meta_add: malloc failed.");
+    ERROR ("plugin_notification_meta_add: calloc failed.");
     return (-1);
   }
-  memset (meta, 0, sizeof (notification_meta_t));
 
   sstrncpy (meta->name, name, sizeof (meta->name));
   meta->type = type;
diff --git a/src/daemon/types_list.c b/src/daemon/types_list.c
index 3ac38f23..de6fce3e 100644
--- a/src/daemon/types_list.c
+++ b/src/daemon/types_list.c
@@ -112,12 +112,10 @@ static void parse_line (char *buf)
   if (fields[0][0] == '#')
     return;
 
-  ds = malloc (sizeof (*ds));
+  ds = calloc (1, sizeof (*ds));
   if (ds == NULL)
     return;
 
-  memset (ds, '\0', sizeof (data_set_t));
-
   sstrncpy (ds->type, fields[0], sizeof (ds->type));
 
   ds->ds_num = fields_num - 1;
diff --git a/src/daemon/utils_avltree.c b/src/daemon/utils_avltree.c
index bf6880ca..1680c41f 100644
--- a/src/daemon/utils_avltree.c
+++ b/src/daemon/utils_avltree.c
@@ -665,10 +665,9 @@ c_avl_iterator_t *c_avl_get_iterator (c_avl_tree_t *t)
 	if (t == NULL)
 		return (NULL);
 
-	iter = malloc (sizeof (*iter));
+	iter = calloc (1, sizeof (*iter));
 	if (iter == NULL)
 		return (NULL);
-	memset (iter, '\0', sizeof (c_avl_iterator_t));
 	iter->tree = t;
 
 	return (iter);
diff --git a/src/daemon/utils_cache.c b/src/daemon/utils_cache.c
index 7f0d228f..e1cfac98 100644
--- a/src/daemon/utils_cache.c
+++ b/src/daemon/utils_cache.c
@@ -83,13 +83,12 @@ static cache_entry_t *cache_alloc (size_t values_num)
 {
   cache_entry_t *ce;
 
-  ce = malloc (sizeof (*ce));
+  ce = calloc (1, sizeof (*ce));
   if (ce == NULL)
   {
-    ERROR ("utils_cache: cache_alloc: malloc failed.");
+    ERROR ("utils_cache: cache_alloc: calloc failed.");
     return (NULL);
   }
-  memset (ce, '\0', sizeof (cache_entry_t));
   ce->values_num = values_num;
 
   ce->values_gauge = calloc (values_num, sizeof (*ce->values_gauge));
diff --git a/src/daemon/utils_heap.c b/src/daemon/utils_heap.c
index 1b5dca73..ae502c90 100644
--- a/src/daemon/utils_heap.c
+++ b/src/daemon/utils_heap.c
@@ -112,14 +112,13 @@ c_heap_t *c_heap_create (int (*compare) (const void *, const void *))
   if (compare == NULL)
     return (NULL);
 
-  h = malloc (sizeof (*h));
+  h = calloc (1, sizeof (*h));
   if (h == NULL)
     return (NULL);
 
-  memset (h, 0, sizeof (*h));
   pthread_mutex_init (&h->lock, /* attr = */ NULL);
   h->compare = compare;
-  
+
   h->list = NULL;
   h->list_len = 0;
   h->list_size = 0;
diff --git a/src/daemon/utils_ignorelist.c b/src/daemon/utils_ignorelist.c
index 011b3d3d..d867c848 100644
--- a/src/daemon/utils_ignorelist.c
+++ b/src/daemon/utils_ignorelist.c
@@ -94,13 +94,12 @@ static int ignorelist_append_regex(ignorelist_t *il, const char *re_str)
 	ignorelist_item_t *entry;
 	int status;
 
-	re = malloc (sizeof (*re));
+	re = calloc (1, sizeof (*re));
 	if (re == NULL)
 	{
-		ERROR ("ignorelist_append_regex: malloc failed.");
+		ERROR ("ignorelist_append_regex: calloc failed.");
 		return (ENOMEM);
 	}
-	memset (re, 0, sizeof (*re));
 
 	status = regcomp (re, re_str, REG_EXTENDED);
 	if (status != 0)
@@ -113,15 +112,14 @@ static int ignorelist_append_regex(ignorelist_t *il, const char *re_str)
 		return (status);
 	}
 
-	entry = malloc (sizeof (*entry));
+	entry = calloc (1, sizeof (*entry));
 	if (entry == NULL)
 	{
-		ERROR ("ignorelist_append_regex: malloc failed.");
+		ERROR ("ignorelist_append_regex: calloc failed.");
 		regfree (re);
 		sfree (re);
 		return (ENOMEM);
 	}
-	memset (entry, 0, sizeof (*entry));
 	entry->rmatch = re;
 
 	ignorelist_append (il, entry);
@@ -134,12 +132,11 @@ static int ignorelist_append_string(ignorelist_t *il, const char *entry)
 	ignorelist_item_t *new;
 
 	/* create new entry */
-	if ((new = malloc(sizeof (*new))) == NULL )
+	if ((new = calloc(1, sizeof (*new))) == NULL )
 	{
 		ERROR ("cannot allocate new entry");
 		return (1);
 	}
-	memset (new, '\0', sizeof(ignorelist_item_t));
 	new->smatch = sstrdup(entry);
 
 	/* append new entry */
@@ -194,10 +191,9 @@ ignorelist_t *ignorelist_create (int invert)
 {
 	ignorelist_t *il;
 
-	il = malloc (sizeof (*il));
+	il = calloc (1, sizeof (*il));
 	if (il == NULL)
 		return NULL;
-	memset (il, 0, sizeof (*il));
 
 	/*
 	 * ->ignore == 0  =>  collect
diff --git a/src/daemon/utils_llist.c b/src/daemon/utils_llist.c
index 40dd0eaa..1a6188f6 100644
--- a/src/daemon/utils_llist.c
+++ b/src/daemon/utils_llist.c
@@ -48,12 +48,10 @@ llist_t *llist_create (void)
 {
 	llist_t *ret;
 
-	ret = malloc (sizeof (*ret));
+	ret = calloc (1, sizeof (*ret));
 	if (ret == NULL)
 		return (NULL);
 
-	memset (ret, '\0', sizeof (llist_t));
-
 	return (ret);
 }
 
diff --git a/src/daemon/utils_match.c b/src/daemon/utils_match.c
index c1d99e15..cf87b6b7 100644
--- a/src/daemon/utils_match.c
+++ b/src/daemon/utils_match.c
@@ -238,10 +238,9 @@ cu_match_t *match_create_callback (const char *regex, const char *excluderegex,
   DEBUG ("utils_match: match_create_callback: regex = %s, excluderegex = %s",
 	 regex, excluderegex);
 
-  obj = malloc (sizeof (*obj));
+  obj = calloc (1, sizeof (*obj));
   if (obj == NULL)
     return (NULL);
-  memset (obj, '\0', sizeof (cu_match_t));
 
   status = regcomp (&obj->regex, regex, REG_EXTENDED | REG_NEWLINE);
   if (status != 0)
@@ -275,10 +274,9 @@ cu_match_t *match_create_simple (const char *regex,
   cu_match_value_t *user_data;
   cu_match_t *obj;
 
-  user_data = malloc (sizeof (*user_data));
+  user_data = calloc (1, sizeof (*user_data));
   if (user_data == NULL)
     return (NULL);
-  memset (user_data, '\0', sizeof (cu_match_value_t));
   user_data->ds_type = match_ds_type;
 
   obj = match_create_callback (regex, excluderegex,
diff --git a/src/daemon/utils_tail.c b/src/daemon/utils_tail.c
index c4b73c35..0b0a8fb4 100644
--- a/src/daemon/utils_tail.c
+++ b/src/daemon/utils_tail.c
@@ -119,10 +119,9 @@ cu_tail_t *cu_tail_create (const char *file)
 {
 	cu_tail_t *obj;
 
-	obj = malloc (sizeof (*obj));
+	obj = calloc (1, sizeof (*obj));
 	if (obj == NULL)
 		return (NULL);
-	memset (obj, '\0', sizeof (cu_tail_t));
 
 	obj->file = strdup (file);
 	if (obj->file == NULL)
diff --git a/src/daemon/utils_tail_match.c b/src/daemon/utils_tail_match.c
index c8fd05ef..1e5da95e 100644
--- a/src/daemon/utils_tail_match.c
+++ b/src/daemon/utils_tail_match.c
@@ -126,10 +126,9 @@ cu_tail_match_t *tail_match_create (const char *filename)
 {
   cu_tail_match_t *obj;
 
-  obj = malloc (sizeof (*obj));
+  obj = calloc (1, sizeof (*obj));
   if (obj == NULL)
     return (NULL);
-  memset (obj, '\0', sizeof (cu_tail_match_t));
 
   obj->tail = cu_tail_create (filename);
   if (obj->tail == NULL)
@@ -212,13 +211,12 @@ int tail_match_add_match_simple (cu_tail_match_t *obj,
   if (match == NULL)
     return (-1);
 
-  user_data = malloc (sizeof (*user_data));
+  user_data = calloc (1, sizeof (*user_data));
   if (user_data == NULL)
   {
     match_destroy (match);
     return (-1);
   }
-  memset (user_data, '\0', sizeof (cu_tail_match_simple_t));
 
   sstrncpy (user_data->plugin, plugin, sizeof (user_data->plugin));
   if (plugin_instance != NULL)