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/*
** Zabbix
** Copyright (C) 2001-2014 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"
static int VM_MEMORY_TOTAL(AGENT_RESULT *result)
{
struct sysinfo info;
if (0 != sysinfo(&info))
return SYSINFO_RET_FAIL;
SET_UI64_RESULT(result, (zbx_uint64_t)info.totalram * info.mem_unit);
return SYSINFO_RET_OK;
}
static int VM_MEMORY_FREE(AGENT_RESULT *result)
{
struct sysinfo info;
if (0 != sysinfo(&info))
return SYSINFO_RET_FAIL;
SET_UI64_RESULT(result, (zbx_uint64_t)info.freeram * info.mem_unit);
return SYSINFO_RET_OK;
}
static int VM_MEMORY_BUFFERS(AGENT_RESULT *result)
{
struct sysinfo info;
if (0 != sysinfo(&info))
return SYSINFO_RET_FAIL;
SET_UI64_RESULT(result, (zbx_uint64_t)info.bufferram * info.mem_unit);
return SYSINFO_RET_OK;
}
static int VM_MEMORY_CACHED(AGENT_RESULT *result)
{
FILE *f;
char *t, c[MAX_STRING_LEN];
zbx_uint64_t res = 0;
if (NULL == (f = fopen("/proc/meminfo", "r")))
return SYSINFO_RET_FAIL;
while (NULL != fgets(c, sizeof(c), f))
{
if (0 == strncmp(c, "Cached:", 7))
{
t = strtok(c, " ");
t = strtok(NULL, " ");
sscanf(t, ZBX_FS_UI64, &res);
t = strtok(NULL, " ");
if (0 != strcasecmp(t, "kb"))
res <<= 10;
else if (0 != strcasecmp(t, "mb"))
res <<= 20;
else if (0 != strcasecmp(t, "gb"))
res <<= 30;
else if (0 != strcasecmp(t, "tb"))
res <<= 40;
break;
}
}
zbx_fclose(f);
SET_UI64_RESULT(result, res);
return SYSINFO_RET_OK;
}
static int VM_MEMORY_USED(AGENT_RESULT *result)
{
struct sysinfo info;
if (0 != sysinfo(&info))
return SYSINFO_RET_FAIL;
SET_UI64_RESULT(result, (zbx_uint64_t)(info.totalram - info.freeram) * info.mem_unit);
return SYSINFO_RET_OK;
}
static int VM_MEMORY_PUSED(AGENT_RESULT *result)
{
struct sysinfo info;
if (0 != sysinfo(&info) || 0 == info.totalram)
return SYSINFO_RET_FAIL;
SET_DBL_RESULT(result, (info.totalram - info.freeram) / (double)info.totalram * 100);
return SYSINFO_RET_OK;
}
static int VM_MEMORY_AVAILABLE(AGENT_RESULT *result)
{
struct sysinfo info;
AGENT_RESULT result_tmp;
if (0 != sysinfo(&info))
return SYSINFO_RET_FAIL;
init_result(&result_tmp);
if (SYSINFO_RET_OK != VM_MEMORY_CACHED(&result_tmp))
return SYSINFO_RET_FAIL;
SET_UI64_RESULT(result, (zbx_uint64_t)(info.freeram + info.bufferram) * info.mem_unit + result_tmp.ui64);
free_result(&result_tmp);
return SYSINFO_RET_OK;
}
static int VM_MEMORY_PAVAILABLE(AGENT_RESULT *result)
{
struct sysinfo info;
AGENT_RESULT result_tmp;
zbx_uint64_t available, total;
if (0 != sysinfo(&info))
return SYSINFO_RET_FAIL;
init_result(&result_tmp);
if (SYSINFO_RET_OK != VM_MEMORY_CACHED(&result_tmp))
return SYSINFO_RET_FAIL;
available = (zbx_uint64_t)(info.freeram + info.bufferram) * info.mem_unit + result_tmp.ui64;
total = (zbx_uint64_t)info.totalram * info.mem_unit;
if (0 == total)
return SYSINFO_RET_FAIL;
SET_DBL_RESULT(result, available / (double)total * 100);
free_result(&result_tmp);
return SYSINFO_RET_OK;
}
static int VM_MEMORY_SHARED(AGENT_RESULT *result)
{
#ifdef KERNEL_2_4
struct sysinfo info;
if (0 != sysinfo(&info))
return SYSINFO_RET_FAIL;
SET_UI64_RESULT(result, (zbx_uint64_t)info.sharedram * info.mem_unit);
return SYSINFO_RET_OK;
#else
return SYSINFO_RET_FAIL;
#endif
}
int VM_MEMORY_SIZE(AGENT_REQUEST *request, AGENT_RESULT *result)
{
char *mode;
int ret = SYSINFO_RET_FAIL;
if (1 < request->nparam)
return SYSINFO_RET_FAIL;
mode = get_rparam(request, 0);
if (NULL == mode || '\0' == *mode || 0 == strcmp(mode, "total"))
ret = VM_MEMORY_TOTAL(result);
else if (0 == strcmp(mode, "free"))
ret = VM_MEMORY_FREE(result);
else if (0 == strcmp(mode, "buffers"))
ret = VM_MEMORY_BUFFERS(result);
else if (0 == strcmp(mode, "cached"))
ret = VM_MEMORY_CACHED(result);
else if (0 == strcmp(mode, "used"))
ret = VM_MEMORY_USED(result);
else if (0 == strcmp(mode, "pused"))
ret = VM_MEMORY_PUSED(result);
else if (0 == strcmp(mode, "available"))
ret = VM_MEMORY_AVAILABLE(result);
else if (0 == strcmp(mode, "pavailable"))
ret = VM_MEMORY_PAVAILABLE(result);
else if (0 == strcmp(mode, "shared"))
ret = VM_MEMORY_SHARED(result);
else
ret = SYSINFO_RET_FAIL;
return ret;
}
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