mirror of
https://github.com/lm-sensors/lm-sensors.git
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Merlin Hughes
8d29ce56b5
-mh git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@1475 7894878c-1315-0410-8ee3-d5d059ff63e0
132 lines
3.5 KiB
C
132 lines
3.5 KiB
C
/*
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* sensord
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*
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* A daemon that periodically logs sensor information to syslog.
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*
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* Copyright (c) 1999-2002 Merlin Hughes <merlin@merlin.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <syslog.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include "sensord.h"
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#include "lib/error.h"
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static const char *sensorsCfgPaths[] = {
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"/etc", "/usr/local/etc", "/usr/lib/sensors", "/usr/local/lib/sensors", "/usr/lib", "/usr/local/lib", NULL
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};
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#define CFG_PATH_LEN 4096
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static char cfgPath[CFG_PATH_LEN + 1];
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static time_t cfgLastModified;
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int
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initLib
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(void) {
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cfgPath[CFG_PATH_LEN] = '\0';
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if (!strcmp (sensorsCfgFile, "-")) {
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strncpy (cfgPath, sensorsCfgFile, CFG_PATH_LEN);
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} else if (sensorsCfgFile[0] == '/') {
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strncpy (cfgPath, sensorsCfgFile, CFG_PATH_LEN);
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} else if (strchr (sensorsCfgFile, '/')) {
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char *cwd = getcwd (NULL, 0);
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snprintf (cfgPath, CFG_PATH_LEN, "%s/%s", cwd, sensorsCfgFile);
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free (cwd);
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} else {
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int index0;
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struct stat stats;
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for (index0 = 0; sensorsCfgPaths[index0]; ++ index0) {
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snprintf (cfgPath, CFG_PATH_LEN, "%s/%s", sensorsCfgPaths[index0], sensorsCfgFile);
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if (stat (cfgPath, &stats) == 0)
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break;
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}
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if (!sensorsCfgPaths[index0]) {
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sensorLog (LOG_ERR, "Error locating sensors configuration file: %s", sensorsCfgFile);
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return 9;
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}
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}
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return 0;
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}
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static int
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loadConfig
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(int reload) {
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struct stat stats;
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FILE *cfg = NULL;
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int ret = 0;
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if (!strcmp (cfgPath, "-")) {
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if (!reload) {
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if ((ret = sensors_init (stdin))) {
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if (ret == SENSORS_ERR_PROC)
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sensorLog (LOG_ERR, "Error reading /proc; modules probably not loaded");
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else
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sensorLog (LOG_ERR, "Error %d loading sensors configuration file: <stdin>", ret);
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ret = 12;
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}
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}
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} else if (stat (cfgPath, &stats) < 0) {
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sensorLog (LOG_ERR, "Error stating sensors configuration file: %s", cfgPath);
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ret = 10;
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} else if (!reload || (difftime (stats.st_mtime, cfgLastModified) > 0.0)) {
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if (reload)
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sensorLog (LOG_INFO, "configuration reloading");
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if (!(cfg = fopen (cfgPath, "r"))) {
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sensorLog (LOG_ERR, "Error opening sensors configuration file: %s", cfgPath);
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ret = 11;
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} else if ((ret = sensors_init (cfg))) {
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if (ret == SENSORS_ERR_PROC)
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sensorLog (LOG_ERR, "Error reading /proc; modules probably not loaded");
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else
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sensorLog (LOG_ERR, "Error %d loading sensors configuration file: %s", ret, cfgPath);
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ret = 11;
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} else {
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cfgLastModified = stats.st_mtime;
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}
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if (cfg)
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fclose (cfg);
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}
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return ret;
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}
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int
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loadLib
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(void) {
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return loadConfig (0);
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}
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int
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reloadLib
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(void) {
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return loadConfig (1);
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}
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int
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unloadLib
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(void) {
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sensors_cleanup ();
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return 0;
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}
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