Zabbix

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** 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 Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

#include "zbxsysinfo.h"

#include "../sysinfo.h"

​

#include "zbxregexp.h"

​

#include <sys/sensors.h>

​

#ifdef HAVE_SENSORDEV

​

static void count_sensor(int do_task, const struct sensor *sensor, double *aggr, int *cnt)

{

    double  value = sensor->value;

​

    switch (sensor->type)

    {

        case SENSOR_TEMP:

            value = (value - 273150000) / 1000000;

            break;

        case SENSOR_VOLTS_DC:

        case SENSOR_VOLTS_AC:

        case SENSOR_AMPS:

        case SENSOR_LUX:

            value /= 1000000;

            break;

        case SENSOR_TIMEDELTA:

            value /= 1000000000;

            break;

        default:

            break;

    }

​

    (*cnt)++;

​

    switch (do_task)

    {

        case ZBX_DO_ONE:

            *aggr = value;

            break;

        case ZBX_DO_AVG:

            *aggr += value;

            break;

        case ZBX_DO_MAX:

            *aggr = (1 == *cnt ? value : MAX(*aggr, value));

            break;

        case ZBX_DO_MIN:

            *aggr = (1 == *cnt ? value : MIN(*aggr, value));

            break;

    }

}

​

static int  get_device_sensors(int do_task, int *mib, const struct sensordev *sensordev, const char *name,

        double *aggr, int *cnt)

{

    if (ZBX_DO_ONE == do_task)

    {

        int     i, len = 0;

        struct sensor   sensor;

        size_t      slen = sizeof(sensor);

​

        for (i = 0; i < SENSOR_MAX_TYPES; i++)

        {

            if (0 == strncmp(name, sensor_type_s[i], len = strlen(sensor_type_s[i])))

                break;

        }

​

        if (i == SENSOR_MAX_TYPES)

            return FAIL;

​

        if (SUCCEED != zbx_is_uint31(name + len, &mib[4]))

            return FAIL;

​

        mib[3] = i;

​

        if (-1 == sysctl(mib, 5, &sensor, &slen, NULL, 0))

            return FAIL;

​

        count_sensor(do_task, &sensor, aggr, cnt);