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 "inodes.h"

#include "zbxsysinfo.h"

#include "../sysinfo.h"

​

int get_fs_inode_stat(const char *fs, zbx_uint64_t *itotal, zbx_uint64_t *ifree, zbx_uint64_t *iused, double *pfree,

        double *pused, const char *mode, char **error)

{

#ifdef HAVE_SYS_STATVFS_H

#   define ZBX_STATFS   statvfs

#   define ZBX_FFREE    f_favail

#else

#   define ZBX_STATFS   statfs

#   define ZBX_FFREE    f_ffree

#endif

    zbx_uint64_t        total;

    struct ZBX_STATFS   s;

​

    if (0 != ZBX_STATFS(fs, &s))

    {

        *error = zbx_dsprintf(NULL, "Cannot obtain filesystem information: %s",

                zbx_strerror(errno));

        return SYSINFO_RET_FAIL;

    }

​

    *itotal = (zbx_uint64_t)s.f_files;

    *ifree = (zbx_uint64_t)s.ZBX_FFREE;

    *iused =  (zbx_uint64_t)(s.f_files - s.f_ffree);

    total = s.f_files;

#ifdef HAVE_SYS_STATVFS_H

    total -= s.f_ffree - s.f_favail;

#endif

    if (0 != total)

    {

        *pfree = (100.0 *  s.ZBX_FFREE) / total;

        *pused = 100.0 - (double)(100.0 * s.ZBX_FFREE) / total;

    }

    else if (NULL != mode && (0 == strcmp(mode, "pfree") || 0 == strcmp(mode, "pused")))

    {

        *pfree = 100.0;

        *pused = 0.0;

    }

​

    return SYSINFO_RET_OK;

#undef ZBX_STATFS

#undef ZBX_FFREE

}

​

static int  vfs_fs_inode_local(AGENT_REQUEST *request, AGENT_RESULT *result)

{

    char            *fsname, *mode, *error;

    zbx_uint64_t        total, free, used;

    double          pfree, pused;

​

    if (2 < request->nparam)

    {

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

        return SYSINFO_RET_FAIL;

    }

​

    fsname = get_rparam(request, 0);

    mode = get_rparam(request, 1);

​

    if (NULL == fsname || '\0' == *fsname)

    {

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

        return SYSINFO_RET_FAIL;

    }

​

    if (SYSINFO_RET_OK != get_fs_inode_stat(fsname, &total, &free, &used, &pfree, &pused, mode, &error))

    {

        SET_MSG_RESULT(result, error);

        return SYSINFO_RET_FAIL;

    }

​

    if (NULL == mode || '\0' == *mode || 0 == strcmp(mode, "total"))    /* default parameter */

    {

        SET_UI64_RESULT(result, total);