/**
* 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 */