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/*
** Zabbix
** Copyright (C) 2001-2013 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 void get_swapinfo(double *total, double *fr)
{
register int cnt, i, page_size;
/* Support for >2Gb */
/* register 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);
}
int SYSTEM_SWAP_FREE(AGENT_REQUEST *request, AGENT_RESULT *result)
{
double swaptotal, swapfree;
get_swapinfo(&swaptotal, &swapfree);
SET_UI64_RESULT(result, swapfree);
return SYSINFO_RET_OK;
}
int SYSTEM_SWAP_TOTAL(AGENT_REQUEST *request, AGENT_RESULT *result)
{
double swaptotal, swapfree;
get_swapinfo(&swaptotal, &swapfree);
SET_UI64_RESULT(result, swaptotal);
return SYSINFO_RET_OK;
}
static int SYSTEM_SWAP_PFREE(AGENT_REQUEST *request, AGENT_RESULT *result)
{
AGENT_RESULT result_tmp;
zbx_uint64_t tot_val = 0;
zbx_uint64_t free_val = 0;
init_result(&result_tmp);
if (SYSINFO_RET_OK != SYSTEM_SWAP_TOTAL(request, &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)
{
free_result(&result_tmp);
return SYSINFO_RET_FAIL;
}
if (SYSINFO_RET_OK != SYSTEM_SWAP_FREE(request, &result_tmp) || !(result_tmp.type & AR_UINT64))
return SYSINFO_RET_FAIL;
free_val = result_tmp.ui64;
free_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_REQUEST *request, AGENT_RESULT *result)
{
AGENT_RESULT result_tmp;
zbx_uint64_t tot_val = 0;
zbx_uint64_t free_val = 0;
init_result(&result_tmp);
if (SYSINFO_RET_OK != SYSTEM_SWAP_TOTAL(request, &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)
{
free_result(&result_tmp);
return SYSINFO_RET_FAIL;
}
if (SYSINFO_RET_OK != SYSTEM_SWAP_FREE(request, &result_tmp) || !(result_tmp.type & AR_UINT64))
return SYSINFO_RET_FAIL;
free_val = result_tmp.ui64;
free_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 *tmp;
int ret = SYSINFO_RET_FAIL;
if (2 < request->nparam)
return SYSINFO_RET_FAIL;
tmp = get_rparam(request, 0);
if (NULL != tmp && '\0' != *tmp && 0 != strcmp(tmp, "all"))
return SYSINFO_RET_FAIL;
tmp = get_rparam(request, 1);
if (NULL == tmp || '\0' == *tmp || 0 == strcmp(tmp, "free"))
ret = SYSTEM_SWAP_FREE(request, result);
else if (0 ==strcmp(tmp, "total"))
ret = SYSTEM_SWAP_TOTAL(request, result);
else if (0 ==strcmp(tmp, "pfree"))
ret = SYSTEM_SWAP_PFREE(request, result);
else if (0 ==strcmp(tmp, "pused"))
ret = SYSTEM_SWAP_PUSED(request, result);
else
ret = SYSINFO_RET_FAIL;
return ret;
}
#define DO_SWP_IN 1
#define DO_PG_IN 2
#define DO_SWP_OUT 3
#define DO_PG_OUT 4
static int get_swap_io(double *swapin, double *pgswapin, double *swapout, double *pgswapout)
{
kstat_ctl_t *kc;
kstat_t *k;
cpu_stat_t *cpu;
int cpu_count = 0;
if (NULL != (kc = kstat_open()))
{
while (NULL != (k = kc->kc_chain))
{
if (0 == strncmp(k->ks_name, "cpu_stat", 8) && -1 != kstat_read(kc, k, NULL))
{
cpu = (cpu_stat_t*)k->ks_data;
if (NULL != swapin)
{
/* uint_t swapin; */ /* swapins */
(*swapin) += (double)cpu->cpu_vminfo.swapin;
}
if (NULL != pgswapin)
{
/* uint_t pgswapin; */ /* pages swapped in */
(*pgswapin) += (double)cpu->cpu_vminfo.pgswapin;
}
if (NULL != swapout)
{
/* uint_t swapout; */ /* swapout */
(*swapout) += (double)cpu->cpu_vminfo.swapout;
}
if (NULL != pgswapout)
{
/* uint_t pgswapout; */ /* pages swapped out */
(*pgswapout) += (double)cpu->cpu_vminfo.pgswapout;
}
cpu_count += 1;
}
k = k->ks_next;
}
kstat_close(kc);
}
if (0 == cpu_count)
return SYSINFO_RET_FAIL;
return SYSINFO_RET_OK;
}
int SYSTEM_SWAP_IN(AGENT_REQUEST *request, AGENT_RESULT *result)
{
int ret = SYSINFO_RET_FAIL;
char *tmp;
double value = 0;
if (2 < request->nparam)
return SYSINFO_RET_FAIL;
tmp = get_rparam(request, 0);
if (NULL != tmp && '\0' != *tmp && 0 != strcmp(tmp, "all"))
return SYSINFO_RET_FAIL;
tmp = get_rparam(request, 1);
if (NULL == tmp || '\0' == *tmp || 0 == strcmp(tmp, "count"))
ret = get_swap_io(&value, NULL, NULL, NULL);
else if (0 == strcmp(tmp,"pages"))
ret = get_swap_io(NULL, &value, NULL, NULL);
else
ret = SYSINFO_RET_FAIL;
if (ret != SYSINFO_RET_OK)
return ret;
SET_UI64_RESULT(result, value);
return ret;
}
int SYSTEM_SWAP_OUT(AGENT_REQUEST *request, AGENT_RESULT *result)
{
int ret = SYSINFO_RET_FAIL;
char *tmp;
double value = 0;
if (2 < request->nparam)
return SYSINFO_RET_FAIL;
tmp = get_rparam(request, 0);
if (NULL != tmp && '\0' != *tmp && 0 != strcmp(tmp, "all"))
return SYSINFO_RET_FAIL;
tmp = get_rparam(request, 1);
if (NULL == tmp || '\0' == *tmp || 0 == strcmp(tmp, "count"))
ret = get_swap_io(NULL, NULL, &value, NULL);
else if (0 == strcmp(tmp,"pages"))
ret = get_swap_io(NULL, NULL, NULL, &value);
else
ret = SYSINFO_RET_FAIL;
if (ret != SYSINFO_RET_OK)
return ret;
SET_UI64_RESULT(result, value);
return ret;
}
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