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/*
** Zabbix
** Copyright (C) 2001-2018 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 ZBX_DEV_PFX "/dev/"
typedef struct
{
zbx_uint64_t nread;
zbx_uint64_t nwritten;
zbx_uint64_t reads;
zbx_uint64_t writes;
}
zbx_perfstat_t;
int get_diskstat(const char *devname, zbx_uint64_t *dstat)
{
return FAIL;
}
static int get_perfstat_io(const char *devname, zbx_perfstat_t *zp, char **error)
{
#if defined(HAVE_LIBPERFSTAT)
int err;
if ('\0' != *devname)
{
perfstat_id_t name;
perfstat_disk_t data;
strscpy(name.name, devname);
if (0 < (err = perfstat_disk(&name, &data, sizeof(data), 1)))
{
zp->nread = data.rblks * data.bsize;
zp->nwritten = data.wblks * data.bsize;
zp->reads = data.xrate;
zp->writes = data.xfers - data.xrate;
return SYSINFO_RET_OK;
}
}
else
{
perfstat_disk_total_t data;
if (0 < (err = perfstat_disk_total(NULL, &data, sizeof(data), 1)))
{
zp->nread = data.rblks * 512;
zp->nwritten = data.wblks * 512;
zp->reads = data.xrate;
zp->writes = data.xfers - data.xrate;
return SYSINFO_RET_OK;
}
}
if (0 == err)
*error = zbx_strdup(NULL, "Cannot obtain system information.");
else
*error = zbx_dsprintf(NULL, "Cannot obtain system information: %s", zbx_strerror(errno));
return SYSINFO_RET_FAIL;
#else
*error = zbx_strdup(NULL, "Agent was compiled without support for Perfstat API.");
return SYSINFO_RET_FAIL;
#endif
}
static int VFS_DEV_READ_BYTES(const char *devname, AGENT_RESULT *result)
{
zbx_perfstat_t zp;
char *error;
if (SYSINFO_RET_OK != get_perfstat_io(devname, &zp, &error))
{
SET_MSG_RESULT(result, error);
return SYSINFO_RET_FAIL;
}
SET_UI64_RESULT(result, zp.nread);
return SYSINFO_RET_OK;
}
static int VFS_DEV_READ_OPERATIONS(const char *devname, AGENT_RESULT *result)
{
zbx_perfstat_t zp;
char *error;
if (SYSINFO_RET_OK != get_perfstat_io(devname, &zp, &error))
{
SET_MSG_RESULT(result, error);
return SYSINFO_RET_FAIL;
}
SET_UI64_RESULT(result, zp.reads);
return SYSINFO_RET_OK;
}
static int VFS_DEV_WRITE_BYTES(const char *devname, AGENT_RESULT *result)
{
zbx_perfstat_t zp;
char *error;
if (SYSINFO_RET_OK != get_perfstat_io(devname, &zp, &error))
{
SET_MSG_RESULT(result, error);
return SYSINFO_RET_FAIL;
}
SET_UI64_RESULT(result, zp.nwritten);
return SYSINFO_RET_OK;
}
static int VFS_DEV_WRITE_OPERATIONS(const char *devname, AGENT_RESULT *result)
{
zbx_perfstat_t zp;
char *error;
if (SYSINFO_RET_OK != get_perfstat_io(devname, &zp, &error))
{
SET_MSG_RESULT(result, error);
return SYSINFO_RET_FAIL;
}
SET_UI64_RESULT(result, zp.writes);
return SYSINFO_RET_OK;
}
int VFS_DEV_READ(AGENT_REQUEST *request, AGENT_RESULT *result)
{
const char *devname, *type;
int ret;
if (2 < request->nparam)
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Too many parameters."));
return SYSINFO_RET_FAIL;
}
devname = get_rparam(request, 0);
if (NULL == devname || 0 == strcmp("all", devname))
devname = "";
else if (0 == strncmp(ZBX_DEV_PFX, devname, ZBX_CONST_STRLEN(ZBX_DEV_PFX)))
devname += ZBX_CONST_STRLEN(ZBX_DEV_PFX);
type = get_rparam(request, 1);
if (NULL == type || '\0' == *type || 0 == strcmp(type, "operations"))
ret = VFS_DEV_READ_OPERATIONS(devname, result);
else if (0 == strcmp(type, "bytes"))
ret = VFS_DEV_READ_BYTES(devname, result);
else
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid second parameter."));
return SYSINFO_RET_FAIL;
}
return ret;
}
int VFS_DEV_WRITE(AGENT_REQUEST *request, AGENT_RESULT *result)
{
const char *devname, *type;
int ret;
if (2 < request->nparam)
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Too many parameters."));
return SYSINFO_RET_FAIL;
}
devname = get_rparam(request, 0);
if (NULL == devname || 0 == strcmp("all", devname))
devname = "";
else if (0 == strncmp(ZBX_DEV_PFX, devname, ZBX_CONST_STRLEN(ZBX_DEV_PFX)))
devname += ZBX_CONST_STRLEN(ZBX_DEV_PFX);
type = get_rparam(request, 1);
if (NULL == type || '\0' == *type || 0 == strcmp(type, "operations"))
ret = VFS_DEV_WRITE_OPERATIONS(devname, result);
else if (0 == strcmp(type, "bytes"))
ret = VFS_DEV_WRITE_BYTES(devname, result);
else
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid second parameter."));
return SYSINFO_RET_FAIL;
}
return ret;
}
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