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"

​

int kernel_maxproc(AGENT_REQUEST *request, AGENT_RESULT *result)

{

    int     ret = SYSINFO_RET_FAIL;

    kstat_ctl_t *kc;

    kstat_t     *kt;

    struct var  *v;

​

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

    {

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

                zbx_strerror(errno)));

        return SYSINFO_RET_FAIL;

    }

​

    if (NULL == (kt = kstat_lookup(kc, "unix", 0, "var")))

    {

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

                zbx_strerror(errno)));

        goto clean;

    }

​

    if (KSTAT_TYPE_RAW != kt->ks_type)

    {

        SET_MSG_RESULT(result, zbx_strdup(NULL, "Information looked up in kernel statistics facility"

                " is of the wrong type."));

        goto clean;

    }

​

    if (-1 == kstat_read(kc, kt, NULL))

    {

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

                zbx_strerror(errno)));

        goto clean;

    }

​

    v = (struct var *)kt->ks_data;

​

    /* int  v_proc;     Max processes system wide */

    SET_UI64_RESULT(result, v->v_proc);

    ret = SYSINFO_RET_OK;

clean:

    kstat_close(kc);

​

    return ret;

}