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 "zbxjson.h"

#include "log.h"

#include "zbxalgo.h"

#include "inodes.h"

​

static int  get_fs_size_stat(const char *fs, zbx_uint64_t *total, zbx_uint64_t *free,

        zbx_uint64_t *used, double *pfree, double *pused, char **error)

{

#ifdef HAVE_SYS_STATVFS_H

#   ifdef HAVE_SYS_STATVFS64

#       define ZBX_STATFS   statvfs64

#   else

#       define ZBX_STATFS   statvfs

#   endif

#   define ZBX_BSIZE    f_frsize

#else

#   define ZBX_STATFS   statfs

#   define ZBX_BSIZE    f_bsize

#endif

    struct ZBX_STATFS   s;

​

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

    {

        *error = zbx_dsprintf(NULL, "Cannot obtain filesystem information: %s", zbx_strerror(errno));

        zabbix_log(LOG_LEVEL_DEBUG,"%s failed with error: %s",__func__, *error);

        return SYSINFO_RET_FAIL;

    }

​

    /* Available space could be negative (top bit set) if we hit disk space */

    /* reserved for non-privileged users. Treat it as 0.                    */

    if (0 != ZBX_IS_TOP_BIT_SET(s.f_bavail))

        s.f_bavail = 0;

​

    if (NULL != total)

        *total = (zbx_uint64_t)s.f_blocks * s.ZBX_BSIZE;

​

    if (NULL != free)

        *free = (zbx_uint64_t)s.f_bavail * s.ZBX_BSIZE;

​

    if (NULL != used)

        *used = (zbx_uint64_t)(s.f_blocks - s.f_bfree) * s.ZBX_BSIZE;

​