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 "zbxsysinfo.h"

#include "../sysinfo.h"

​

#include "zbxjson.h"

#include "zbxalgo.h"

#include "inodes.h"

​

static zbx_mntopt_t mntopts[] = {

#if defined(MNTOPT_NAMES)

    MNTOPT_NAMES

#else

    {MNT_ASYNC,     "asynchronous"},

    {MNT_EXPORTED,      "NFS exported"},

    {MNT_LOCAL,     "local"},

    {MNT_NOATIME,       "noatime"},

#if defined(MNT_NODEV)

    {MNT_NODEV,     "nodev"},

#endif

    {MNT_NOEXEC,        "noexec"},

    {MNT_NOSUID,        "nosuid"},

    {MNT_NOSYMFOLLOW,   "nosymfollow"},

    {MNT_QUOTA,     "with quotas"},

    {MNT_RDONLY,        "read-only"},

    {MNT_SYNCHRONOUS,   "synchronous"},

    {MNT_UNION,     "union"},

    {MNT_NOCLUSTERR,    "noclusterr"},

    {MNT_NOCLUSTERW,    "noclusterw"},

    {MNT_SUIDDIR,       "suiddir"},

    {MNT_SOFTDEP,       "soft-updates"},

#if defined(MNT_SUJ)

    {MNT_SUJ,       "journaled soft-updates"},

#endif

    {MNT_MULTILABEL,    "multilabel"},

    {MNT_ACLS,      "acls"},

#if defined(MNT_NFS4ACLS)

    {MNT_NFS4ACLS,      "nfsv4acls"},

#endif

#if defined(MNT_GJOURNAL)

    {MNT_GJOURNAL,      "gjournal"},

#endif

#if defined(MNT_AUTOMOUNTED)

    {MNT_AUTOMOUNTED,   "automounted"},

#endif

#if defined(MNT_VERIFIED)

    {MNT_VERIFIED,      "verified"},

#endif

#if defined(MNT_UNTRUSTED)

    {MNT_UNTRUSTED,     "untrusted"},

#endif

    {0,         NULL}

#endif

};

​

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;

​