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/*
** Zabbix
** Copyright (C) 2001-2019 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 "log.h"
#define get_string(field) #field
#define validate(result, structure, field) \
\
do \
{ \
if (__UINT64_C(0xffffffffffffffff) == structure.field) \
{ \
SET_MSG_RESULT(result, zbx_strdup(NULL, "Cannot obtain filesystem information:" \
" value of " get_string(field) " is unknown.")); \
return SYSINFO_RET_FAIL; \
} \
} \
while(0)
static int vfs_fs_inode(AGENT_REQUEST *request, AGENT_RESULT *result)
{
#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
char *fsname, *mode;
zbx_uint64_t total;
struct ZBX_STATFS s;
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 (0 != ZBX_STATFS(fsname, &s))
{
SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot obtain filesystem information: %s",
zbx_strerror(errno)));
return SYSINFO_RET_FAIL;
}
if (NULL == mode || '\0' == *mode || 0 == strcmp(mode, "total")) /* default parameter */
{
validate(result, s, f_files);
SET_UI64_RESULT(result, s.f_files);
}
else if (0 == strcmp(mode, "free"))
{
validate(result, s, ZBX_FFREE);
SET_UI64_RESULT(result, s.ZBX_FFREE);
}
else if (0 == strcmp(mode, "used"))
{
validate(result, s, f_files);
validate(result, s, f_ffree);
SET_UI64_RESULT(result, s.f_files - s.f_ffree);
}
else if (0 == strcmp(mode, "pfree"))
{
validate(result, s, f_files);
total = s.f_files;
#ifdef HAVE_SYS_STATVFS_H
validate(result, s, f_ffree);
validate(result, s, f_favail);
total -= s.f_ffree - s.f_favail;
#endif
validate(result, s, ZBX_FFREE);
if (0 != total)
{
SET_DBL_RESULT(result, (100.0 * s.ZBX_FFREE) / total);
}
else
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Cannot calculate percentage because total is zero."));
return SYSINFO_RET_FAIL;
}
}
else if (0 == strcmp(mode, "pused"))
{
validate(result, s, f_files);
total = s.f_files;
#ifdef HAVE_SYS_STATVFS_H
validate(result, s, f_ffree);
validate(result, s, f_favail);
total -= s.f_ffree - s.f_favail;
#endif
validate(result, s, ZBX_FFREE);
if (0 != total)
{
SET_DBL_RESULT(result, (100.0 * (total - s.ZBX_FFREE)) / total);
}
else
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Cannot calculate percentage because total is zero."));
return SYSINFO_RET_FAIL;
}
}
else
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid second parameter."));
return SYSINFO_RET_FAIL;
}
return SYSINFO_RET_OK;
}
int VFS_FS_INODE(AGENT_REQUEST *request, AGENT_RESULT *result)
{
return zbx_execute_threaded_metric(vfs_fs_inode, request, result);
}
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