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 "inodes.h"

​

#include "common.h"

#include "sysinfo.h"

#include "log.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")))

    {

        *error = zbx_strdup(NULL, "Cannot calculate percentage because total is zero.");

        return SYSINFO_RET_FAIL;

    }

    return SYSINFO_RET_OK;