Zabbix

/*

** Copyright (C) 2001-2024 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"

​

#include "inodes.h"

​

#include "zbxjson.h"

#include "zbxalgo.h"

​

static zbx_mntopt_t mntopts[] = {

    {MNT_ASYNC,     "asynchronous"},

#if defined(MNT_AUTOMOUNTED)

    {MNT_AUTOMOUNTED,   "automounted"},

#endif

#if defined(MNT_DISCARD)

    {MNT_DISCARD,       "discard"},

#endif

#if defined(MNT_EXTATTR)

    {MNT_EXTATTR,       "extattr"},

#endif

    {MNT_IGNORE,        "hidden"},

    {MNT_LOG,       "log"},

    {MNT_NOATIME,       "noatime"},

    {MNT_NOCOREDUMP,    "nocoredump"},

    {MNT_NODEV,     "nodev"},

    {MNT_NODEVMTIME,    "nodevmtime"},

    {MNT_NOEXEC,        "noexec"},

    {MNT_NOSUID,        "nosuid"},

    {MNT_RDONLY,        "read-only"},

#if defined(MNT_RELATIME)

    {MNT_RELATIME,      "relatime"},

#endif

    {MNT_SOFTDEP,       "soft dependencies"},

#if defined(MNT_SYMPERM)

    {MNT_SYMPERM,       "symperm"},

#endif

    {MNT_SYNCHRONOUS,   "synchronous"},

    {MNT_UNION,     "union"},

    {MNT_EXPORTED,      "NFS exported"},

    {MNT_EXNORESPORT,   "non-reserved ports"},

    {MNT_EXPUBLIC,      "WebNFS exports"},

    {MNT_LOCAL,     "local"},

    {MNT_QUOTA,     "with quotas"},

    {0,         NULL},

};

​

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

#   define ZBX_STATFS   statvfs

#   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;