Zabbix

/*

** Zabbix

** Copyright (C) 2001-2022 Zabbix SIA

**

** This program is free software; you can redistribute it and/or modify

** it under the terms of the GNU General Public License as published by

** the Free Software Foundation; either version 2 of the License, or

** (at your option) any later version.

**

** 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 General Public License for more details.

**

** You should have received a copy of the GNU General Public License

** along with this program; if not, write to the Free Software

** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

**/

​

#include "common.h"

#include "sysinfo.h"

#include "log.h"

​

#define ZBX_PERFSTAT_PAGE_SHIFT 12  /* 4 KB */

​

int SYSTEM_SWAP_SIZE(AGENT_REQUEST *request, AGENT_RESULT *result)

{

#ifdef HAVE_LIBPERFSTAT

    perfstat_memory_total_t mem;

    char            *swapdev, *mode;

​

    if (2 < request->nparam)

    {

        SET_MSG_RESULT(result, zbx_strdup(NULL, "Too many parameters."));

        return SYSINFO_RET_FAIL;

    }

​

    swapdev = get_rparam(request, 0);

    mode = get_rparam(request, 1);

​

    if (NULL != swapdev && '\0' != *swapdev && 0 != strcmp(swapdev, "all"))

    {

        SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid first parameter."));

        return SYSINFO_RET_FAIL;

    }

​

    if (1 != perfstat_memory_total(NULL, &mem, sizeof(perfstat_memory_total_t), 1))

    {

        SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot obtain system information: %s", zbx_strerror(errno)));

        return SYSINFO_RET_FAIL;

    }

​

    if (NULL == mode || '\0' == *mode || 0 == strcmp(mode, "free"))

    {

        SET_UI64_RESULT(result, mem.pgsp_free << ZBX_PERFSTAT_PAGE_SHIFT);

    }

    else if (0 == strcmp(mode, "total"))

    {

        SET_UI64_RESULT(result, mem.pgsp_total << ZBX_PERFSTAT_PAGE_SHIFT);

    }

    else if (0 == strcmp(mode, "used"))

    {

        SET_UI64_RESULT(result, (mem.pgsp_total - mem.pgsp_free) << ZBX_PERFSTAT_PAGE_SHIFT);

    }

    else if (0 == strcmp(mode, "pfree"))

    {

        SET_DBL_RESULT(result, 0 != mem.pgsp_total ? 100.0 * (mem.pgsp_free / (double)mem.pgsp_total) : 100.0);

    }

    else if (0 == strcmp(mode, "pused"))

    {

        SET_DBL_RESULT(result, 0 != mem.pgsp_total ? 100.0 - 100.0 * (mem.pgsp_free / (double)mem.pgsp_total) : 0.0);

    }

    else

    {

        SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid second parameter."));

        return SYSINFO_RET_FAIL;

    }

​

    return SYSINFO_RET_OK;

#else

    SET_MSG_RESULT(result, zbx_strdup(NULL, "Agent was compiled without support for Perfstat API."));

    return SYSINFO_RET_FAIL;

#endif

}