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 "zbx_sysinfo_kstat.h"

#include "../sysinfo.h"

​

int system_boottime(AGENT_REQUEST *request, AGENT_RESULT *result)

{

    int ret = SYSINFO_RET_FAIL;

​

#ifdef HAVE_ZONE_H

    if (GLOBAL_ZONEID == getzoneid())

    {

#endif

        kstat_ctl_t *kc;

        kstat_t     *kp;

        kstat_named_t   *kn;

​

        if (NULL == (kc = kstat_open()))

        {

            SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot open kernel statistics facility: %s",

                    zbx_strerror(errno)));

            return ret;

        }

​

        if (NULL == (kp = kstat_lookup(kc, "unix", 0, "system_misc")))

        {

            SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot look up in kernel statistics facility: %s",

                    zbx_strerror(errno)));

            goto clean;

        }

​

        if (-1 == kstat_read(kc, kp, 0))

        {

            SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot read from kernel statistics facility: %s",

                    zbx_strerror(errno)));

            goto clean;

        }

​

        if (NULL == (kn = (kstat_named_t *)kstat_data_lookup(kp, "boot_time")))

        {

            SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot look up data in kernel statistics facility:"

                    " %s", zbx_strerror(errno)));

            goto clean;

        }

​

        SET_UI64_RESULT(result, get_kstat_numeric_value(kn));

        ret = SYSINFO_RET_OK;

clean:

        kstat_close(kc);

#ifdef HAVE_ZONE_H