configure.ac: fix libpqos detection style

[collectd.git] / src / entropy.c

diff --git a/src/entropy.c b/src/entropy.c
index d56be6d..c7b5b3f 100644 (file)
--- a/src/entropy.c
+++ b/src/entropy.c
@@ -1,76 +1,62 @@
 /**
  * collectd - src/entropy.c
- * Copyright (C) 2007  Florian octo Forster
+ * Copyright (C) 2007       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 "common.h"
 #include "plugin.h"
 
 #if !KERNEL_LINUX
-# error "No applicable input method."
+#error "No applicable input method."
 #endif
 
 #define ENTROPY_FILE "/proc/sys/kernel/random/entropy_avail"
 
-static void entropy_submit (double entropy)
-{
-       value_t values[1];
-       value_list_t vl = VALUE_LIST_INIT;
-
-       values[0].gauge = entropy;
+static void entropy_submit(value_t value) {
+  value_list_t vl = VALUE_LIST_INIT;
 
-       vl.values = values;
-       vl.values_len = 1;
-       sstrncpy (vl.host, hostname_g, sizeof (vl.host));
-       sstrncpy (vl.plugin, "entropy", sizeof (vl.plugin));
-       sstrncpy (vl.type, "entropy", sizeof (vl.type));
+  vl.values = &value;
+  vl.values_len = 1;
+  sstrncpy(vl.plugin, "entropy", sizeof(vl.plugin));
+  sstrncpy(vl.type, "entropy", sizeof(vl.type));
 
-       plugin_dispatch_values (&vl);
+  plugin_dispatch_values(&vl);
 }
 
-static int entropy_read (void)
-{
-       double entropy;
-       FILE *fh;
-       char buffer[64];
-
-       fh = fopen (ENTROPY_FILE, "r");
-       if (fh == NULL)
-               return (-1);
-
-       if (fgets (buffer, sizeof (buffer), fh) == NULL)
-       {
-               fclose (fh);
-               return (-1);
-       }
-       fclose (fh);
-
-       entropy = atof (buffer);
-       
-       if (entropy > 0.0)
-               entropy_submit (entropy);
+static int entropy_read(void) {
+  value_t v;
+  if (parse_value_file(ENTROPY_FILE, &v, DS_TYPE_GAUGE) != 0) {
+    ERROR("entropy plugin: Reading \"" ENTROPY_FILE "\" failed.");
+    return -1;
+  }
 
-       return (0);
+  entropy_submit(v);
+  return 0;
 }
 
-void module_register (void)
-{
-       plugin_register_read ("entropy", entropy_read);
+void module_register(void) {
+  plugin_register_read("entropy", entropy_read);
 } /* void module_register */