/*************************************************************************** * Copyright (C) 06/2006 by Olaf Rempel * * razzor@kopf-tisch.de * * * * 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; either version 2 of the License, or * * (at your option) any later version. * * * * 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. * * * * 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., * * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * ***************************************************************************/ #include #include #include "plugins.h" struct sammler_plugin plugin; static char *ds_def = { "DS:entropy:GAUGE:15:0:U " }; static char * get_ds(int ds_id) { return ds_def; } static int probe(void) { FILE *fp; char buffer[32]; char *val[1]; fp = fopen("/proc/sys/kernel/random/entropy_avail", "r"); if (fp == NULL) { log_print(LOG_WARN, "plugin random"); return -1; } if (fgets(buffer, sizeof(buffer), fp) == NULL) { log_print(LOG_WARN, "plugin random"); fclose(fp); return -1; } fclose(fp); if (strsplit(buffer, val, 1) != 1) return -1; probe_submit(&plugin, "random.rrd", 0, "%s", val[0]); return 0; } struct sammler_plugin plugin = { .name = "random", .interval = 10, .probe = &probe, .get_ds = &get_ds, };