src/daemon/common.[ch]: add check_capability() function

[collectd.git] / src / utils_fbhash.c

diff --git a/src/utils_fbhash.c b/src/utils_fbhash.c
index 7513729..893bfbd 100644 (file)
--- a/src/utils_fbhash.c
+++ b/src/utils_fbhash.c
@@ -1,28 +1,32 @@
 /**
  * collectd - src/utils_fbhash.c
- * Copyright (C) 2009  Florian octo Forster
+ * Copyright (C) 2009       Florian octo Forster
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; only version 2 of the License is applicable.
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
  *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
  *
  * Authors:
- *   Florian octo Forster <octo at verplant.org>
+ *   Florian octo Forster <octo at collectd.org>
  **/
 
 #include "collectd.h"
-#include "plugin.h"
 
-#include <pthread.h>
+#include "plugin.h"
 
 #include "utils_fbhash.h"
 #include "utils_avltree.h"
@@ -66,7 +70,7 @@ static int fbh_read_file (fbhash_t *h) /* {{{ */
 {
   FILE *fh;
   char buffer[4096];
-  struct flock fl;
+  struct flock fl = { 0 };
   c_avl_tree_t *tree;
   int status;
 
@@ -74,11 +78,8 @@ static int fbh_read_file (fbhash_t *h) /* {{{ */
   if (fh == NULL)
     return (-1);
 
-  memset (&fl, 0, sizeof (fl));
   fl.l_type = F_RDLCK;
   fl.l_whence = SEEK_SET;
-  fl.l_start = 0;
-  fl.l_len = 0; /* == entire file */
   /* TODO: Lock file? -> fcntl */
 
   status = fcntl (fileno (fh), F_SETLK, &fl);
@@ -88,7 +89,7 @@ static int fbh_read_file (fbhash_t *h) /* {{{ */
     return (-1);
   }
 
-  tree = c_avl_create ((void *) strcmp);
+  tree = c_avl_create ((int (*) (const void *, const void *)) strcmp);
   if (tree == NULL)
   {
     fclose (fh);
@@ -174,11 +175,9 @@ static int fbh_read_file (fbhash_t *h) /* {{{ */
 
 static int fbh_check_file (fbhash_t *h) /* {{{ */
 {
-  struct stat statbuf;
+  struct stat statbuf = { 0 };
   int status;
 
-  memset (&statbuf, 0, sizeof (statbuf));
-
   status = stat (h->filename, &statbuf);
   if (status != 0)
     return (-1);
@@ -204,10 +203,9 @@ fbhash_t *fbh_create (const char *file) /* {{{ */
   if (file == NULL)
     return (NULL);
 
-  h = malloc (sizeof (*h));
+  h = calloc (1, sizeof (*h));
   if (h == NULL)
     return (NULL);
-  memset (h, 0, sizeof (*h));
 
   h->filename = strdup (file);
   if (h->filename == NULL)
@@ -254,7 +252,7 @@ char *fbh_get (fbhash_t *h, const char *key) /* {{{ */
 
   pthread_mutex_lock (&h->lock);
 
-  /* TODO: Checking this everytime may be a bit much..? */
+  /* TODO: Checking this every time may be a bit much..? */
   fbh_check_file (h);
 
   status = c_avl_get (h->tree, key, (void *) &value);