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- /*
- * Copyright (c) 2001-2005 Willem Dijkstra
- * Copyright (c) 2006/2007 Constantine A. Murenin
- * <cnst+symon@bugmail.mojo.ru>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- */
- /*
- * Get sensor data from the kernel and return in symon_buf as
- *
- * num : value
- *
- */
- #include "conf.h"
- #include <sys/param.h>
- #include <sys/sensors.h>
- #include <sys/sysctl.h>
- #include <errno.h>
- #include <limits.h>
- #include <stdlib.h>
- #include <string.h>
- #include <ctype.h>
- #include "error.h"
- #include "symon.h"
- #include "xmalloc.h"
- #ifndef MAXSENSORDEVICES
- #define MAXSENSORDEVICES 1024
- #endif
- /* Globals for this module start with sn_ */
- static struct sensor sn_sensor;
- void
- privinit_sensor()
- {
- /* EMPTY */
- }
- void
- init_sensor(struct stream *st)
- {
- #ifndef HAS_SENSORDEV
- long l = strtol(st->arg, NULL, 10);
- st->parg.sn.mib[0] = CTL_HW;
- st->parg.sn.mib[1] = HW_SENSORS;
- st->parg.sn.mib[2] = (int) (l & SYMON_SENSORMASK);
- #else /* HAS_SENSORDEV */
- char *devname, *typename, *bufp, *bufpo;
- int dev, numt, i;
- enum sensor_type type;
- struct sensordev sensordev;
- size_t sdlen = sizeof(sensordev);
- st->parg.sn.mib[0] = CTL_HW;
- st->parg.sn.mib[1] = HW_SENSORS;
- bufpo = xstrdup(st->arg);
- bufp = bufpo;
- if ((devname = strsep(&bufp, ".")) == NULL)
- fatal("%s:%d: sensor(%.200s): incomplete specification",
- __FILE__, __LINE__, st->arg);
- /* convert sensor device string to an integer */
- for (dev = 0; dev < MAXSENSORDEVICES; dev++) {
- st->parg.sn.mib[2] = dev;
- if (sysctl(st->parg.sn.mib, 3, &sensordev, &sdlen, NULL, 0) == -1) {
- if (errno == ENOENT)
- break;
- if (errno == ENXIO)
- continue;
- fatal("%s:%d: sensor(%.200s): sensor %d unknown errno %d",
- __FILE__, __LINE__, st->arg, dev, errno);
- }
- if (strcmp(devname, sensordev.xname) == 0)
- break;
- }
- if (strcmp(devname, sensordev.xname) != 0)
- fatal("sensor(%.200s): device not found: %.200s",
- st->arg, devname);
- /* convert sensor_type string to an integer */
- if ((typename = strsep(&bufp, ".")) == NULL)
- fatal("%s:%d: sensor(%.200s): incomplete specification",
- __FILE__, __LINE__, st->arg);
- numt = -1;
- for (i = 0; typename[i] != '\0'; i++)
- if (isdigit(typename[i])) {
- numt = atoi(&typename[i]);
- typename[i] = '\0';
- break;
- }
- for (type = 0; type < SENSOR_MAX_TYPES; type++)
- if (strcmp(typename, sensor_type_s[type]) == 0)
- break;
- if (type == SENSOR_MAX_TYPES)
- fatal("sensor(%.200s): sensor type not recognised: %.200s",
- st->arg, typename);
- if (sensordev.maxnumt[type] == 0)
- fatal("sensor(%.200s): no sensors of such type on this device: %.200s",
- st->arg, typename);
- st->parg.sn.mib[3] = type;
- if (numt == -1) {
- warning("sensor(%.200s): sensor number not specified, using 0",
- st->arg);
- numt = 0;
- }
- if (!(numt < sensordev.maxnumt[type]))
- fatal("sensor(%.200s): no such sensor attached to this device: %.200s%i",
- st->arg, typename, numt);
- st->parg.sn.mib[4] = numt;
- xfree(bufpo);
- #endif /* !HAS_SENSORDEV */
- info("started module sensor(%.200s)", st->arg);
- }
- int
- get_sensor(char *symon_buf, int maxlen, struct stream *st)
- {
- size_t len = sizeof(sn_sensor);
- double t;
- if (sysctl(st->parg.sn.mib,
- sizeof(st->parg.sn.mib)/sizeof(st->parg.sn.mib[0]),
- &sn_sensor, &len, NULL, 0) == -1) {
- if (errno != ENOENT)
- warning("%s:%d: sensor(%.200s): sysctl error: %.200s",
- __FILE__, __LINE__, st->arg, strerror(errno));
- else
- warning("sensor(%.200s): sensor not found",
- st->arg);
- return 0;
- } else {
- switch (sn_sensor.type) {
- case SENSOR_TEMP:
- t = (double) (sn_sensor.value / 1000.0 / 1000.0) - 273.15;
- break;
- case SENSOR_FANRPM:
- t = (double) sn_sensor.value;
- break;
- case SENSOR_VOLTS_DC:
- t = (double) (sn_sensor.value / 1000.0 / 1000.0);
- break;
- default:
- t = (double) sn_sensor.value;
- }
- return snpack(symon_buf, maxlen, st->arg, MT_SENSOR, t);
- }
- }
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