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/*
** Zabbix
** Copyright (C) 2001-2022 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 "zbxsysinfo.h"
/* Solaris. */
#if !defined(HAVE_SYSINFO_FREESWAP)
#ifdef HAVE_SYS_SWAP_SWAPTABLE
static void get_swapinfo(double *total, double *fr)
{
int cnt, i, page_size;
/* Support for >2Gb */
/* int t, f;*/
double t, f;
struct swaptable *swt;
struct swapent *ste;
static char path[256];
/* get total number of swap entries */
cnt = swapctl(SC_GETNSWP, 0);
/* allocate enough space to hold count + n swapents */
swt = (struct swaptable *)malloc(sizeof(int) +
cnt * sizeof(struct swapent));
if (swt == NULL)
{
*total = 0;
*fr = 0;
return;
}
swt->swt_n = cnt;
/* fill in ste_path pointers: we don't care about the paths, so we
point them all to the same buffer */
ste = &(swt->swt_ent[0]);
i = cnt;
while (--i >= 0)
{
ste++->ste_path = path;
}
/* grab all swap info */
swapctl(SC_LIST, swt);
/* walk through the structs and sum up the fields */
t = f = 0;
ste = &(swt->swt_ent[0]);
i = cnt;
while (--i >= 0)
{
/* don't count slots being deleted */
if (!(ste->ste_flags & ST_INDEL) &&
!(ste->ste_flags & ST_DOINGDEL))
{
t += ste->ste_pages;
f += ste->ste_free;
}
ste++;
}
page_size=getpagesize();
/* fill in the results */
*total = page_size*t;
*fr = page_size*f;
free(swt);
}
#endif
#endif
static int SYSTEM_SWAP_USED(AGENT_RESULT *result)
{
#ifdef HAVE_SYSINFO_FREESWAP
struct sysinfo info;
if (0 == sysinfo(&info))
{
if (0 == (zbx_uint64_t)info.totalswap)
return SYSINFO_RET_FAIL;
#ifdef HAVE_SYSINFO_MEM_UNIT
if (0 == (zbx_uint64_t)info.mem_unit)
return SYSINFO_RET_FAIL;
SET_UI64_RESULT(result, ((zbx_uint64_t)info.totalswap - (zbx_uint64_t)info.freeswap) *
(zbx_uint64_t)info.mem_unit);
#else
SET_UI64_RESULT(result, info.totalswap - info.freeswap);
#endif
return SYSINFO_RET_OK;
}
else
return SYSINFO_RET_FAIL;
/* Solaris */
#else
#ifdef HAVE_SYS_SWAP_SWAPTABLE
double swaptotal, swapfree;
get_swapinfo(&swaptotal, &swapfree);
if (0 == swaptotal)
return SYSINFO_RET_FAIL;
SET_UI64_RESULT(result, swaptotal - swapfree);
return SYSINFO_RET_OK;
#else
return SYSINFO_RET_FAIL;
#endif
#endif
}
static int SYSTEM_SWAP_FREE(AGENT_RESULT *result)
{
#ifdef HAVE_SYSINFO_FREESWAP
struct sysinfo info;
if (0 == sysinfo(&info))
{
if (0 == (zbx_uint64_t)info.freeswap)
return SYSINFO_RET_FAIL;
#ifdef HAVE_SYSINFO_MEM_UNIT
if (0 == (zbx_uint64_t)info.mem_unit)
return SYSINFO_RET_FAIL;
SET_UI64_RESULT(result, (zbx_uint64_t)info.freeswap * (zbx_uint64_t)info.mem_unit);
#else
SET_UI64_RESULT(result, info.freeswap);
#endif
return SYSINFO_RET_OK;
}
else
return SYSINFO_RET_FAIL;
/* Solaris */
#else
#ifdef HAVE_SYS_SWAP_SWAPTABLE
double swaptotal,swapfree;
get_swapinfo(&swaptotal,&swapfree);
if (0 == swapfree)
return SYSINFO_RET_FAIL;
SET_UI64_RESULT(result, swapfree);
return SYSINFO_RET_OK;
#else
return SYSINFO_RET_FAIL;
#endif
#endif
}
static int SYSTEM_SWAP_TOTAL(AGENT_RESULT *result)
{
#ifdef HAVE_SYSINFO_TOTALSWAP
struct sysinfo info;
if (0 == sysinfo(&info))
{
#ifdef HAVE_SYSINFO_MEM_UNIT
SET_UI64_RESULT(result, (zbx_uint64_t)info.totalswap * (zbx_uint64_t)info.mem_unit);
#else
SET_UI64_RESULT(result, info.totalswap);
#endif
return SYSINFO_RET_OK;
}
else
return SYSINFO_RET_FAIL;
/* Solaris */
#else
#ifdef HAVE_SYS_SWAP_SWAPTABLE
double swaptotal,swapfree;
get_swapinfo(&swaptotal,&swapfree);
SET_UI64_RESULT(result, swaptotal);
return SYSINFO_RET_OK;
#else
return SYSINFO_RET_FAIL;
#endif
#endif
}
static int SYSTEM_SWAP_PFREE(AGENT_RESULT *result)
{
AGENT_RESULT result_tmp;
zbx_uint64_t tot_val = 0;
zbx_uint64_t free_val = 0;
zbx_init_agent_result(&result_tmp);
if (SYSINFO_RET_OK != SYSTEM_SWAP_TOTAL(&result_tmp) || !(result_tmp.type & AR_UINT64))
return SYSINFO_RET_FAIL;
tot_val = result_tmp.ui64;
/* Check for division by zero */
if (0 == tot_val)
{
zbx_free_agent_result(&result_tmp);
return SYSINFO_RET_FAIL;
}
if (SYSINFO_RET_OK != SYSTEM_SWAP_FREE(&result_tmp) || !(result_tmp.type & AR_UINT64))
return SYSINFO_RET_FAIL;
free_val = result_tmp.ui64;
zbx_free_agent_result(&result_tmp);
SET_DBL_RESULT(result, (100.0 * (double)free_val) / (double)tot_val);
return SYSINFO_RET_OK;
}
static int SYSTEM_SWAP_PUSED(AGENT_RESULT *result)
{
AGENT_RESULT result_tmp;
zbx_uint64_t tot_val = 0;
zbx_uint64_t free_val = 0;
zbx_init_agent_result(&result_tmp);
if (SYSINFO_RET_OK != SYSTEM_SWAP_TOTAL(&result_tmp) || !(result_tmp.type & AR_UINT64))
return SYSINFO_RET_FAIL;
tot_val = result_tmp.ui64;
/* Check for division by zero */
if (0 == tot_val)
{
zbx_free_agent_result(&result_tmp);
return SYSINFO_RET_FAIL;
}
if (SYSINFO_RET_OK != SYSTEM_SWAP_FREE(&result_tmp) || !(result_tmp.type & AR_UINT64))
return SYSINFO_RET_FAIL;
free_val = result_tmp.ui64;
zbx_free_agent_result(&result_tmp);
SET_DBL_RESULT(result, 100.0 - (100.0 * (double)free_val) / (double)tot_val);
return SYSINFO_RET_OK;
}
int SYSTEM_SWAP_SIZE(AGENT_REQUEST *request, AGENT_RESULT *result)
{
char *swapdev, *mode;
int ret = SYSINFO_RET_FAIL;
if (2 < request->nparam)
return SYSINFO_RET_FAIL;
swapdev = get_rparam(request, 0);
mode = get_rparam(request, 1);
if (NULL != swapdev && '\0' != *swapdev && 0 != strcmp(swapdev, "all"))
return SYSINFO_RET_FAIL;
if (NULL == mode || '\0' == *mode || 0 == strcmp(mode, "free"))
ret = SYSTEM_SWAP_FREE(result);
else if (0 == strcmp(mode, "used"))
ret = SYSTEM_SWAP_USED(result);
else if (0 == strcmp(mode, "total"))
ret = SYSTEM_SWAP_TOTAL(result);
else if (0 == strcmp(mode, "pfree"))
ret = SYSTEM_SWAP_PFREE(result);
else if (0 == strcmp(mode, "pused"))
ret = SYSTEM_SWAP_PUSED(result);
else
ret = SYSINFO_RET_FAIL;
return ret;
}
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