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 "zbxkstat.h"

​

#if defined(HAVE_KSTAT_H) && defined(HAVE_VMINFO_T_UPDATES)

​

#include "zbxsysinfo.h"

​

#include "stats.h"

​

#include "zbxmutexs.h"

#include "zbxstr.h"

​

static kstat_ctl_t  *kc = NULL;

static kid_t        kc_id = 0;

static kstat_t      *kc_vminfo;

​

static zbx_mutex_t  kstat_lock = ZBX_MUTEX_NULL;

​

/******************************************************************************

 *                                                                            *

 * Purpose: refreshes kstat environment                                       *

 *                                                                            *

 * Parameters: error - [OUT] error message                                    *

 *                                                                            *

 * Return value: SUCCEED - kstat environment was refreshed successfully       *

 *               FAIL - otherwise                                             *

 *                                                                            *

 ******************************************************************************/

static int  zbx_kstat_refresh(char **error)

{

    int ret;

    kid_t   kid;

​

    zabbix_log(LOG_LEVEL_DEBUG, "In %s()", __func__);

​

    if (-1 == (kid = kstat_chain_update(kc)))

    {

        *error = zbx_dsprintf(*error, "failed to update kstat chain: %s", zbx_strerror(errno));

        ret = FAIL;

        goto out;

    }

​

    if (0 != kid)

        kc_id = kid;

​

    if (NULL == (kc_vminfo = kstat_lookup(kc, "unix", -1, "vminfo")))

    {

        *error = zbx_dsprintf(*error, "failed to find vminfo data: %s", zbx_strerror(errno));

        ret = FAIL;

        goto out;