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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 <procfs.h>
#include "common.h"
#include "sysinfo.h"
#include "zbxregexp.h"
#include "log.h"
static int check_procstate(psinfo_t *psinfo, int zbx_proc_stat)
{
if (zbx_proc_stat == ZBX_PROC_STAT_ALL)
return SUCCEED;
switch (zbx_proc_stat)
{
case ZBX_PROC_STAT_RUN:
return (psinfo->pr_lwp.pr_state == SRUN || psinfo->pr_lwp.pr_state == SONPROC) ? SUCCEED : FAIL;
case ZBX_PROC_STAT_SLEEP:
return (psinfo->pr_lwp.pr_state == SSLEEP) ? SUCCEED : FAIL;
case ZBX_PROC_STAT_ZOMB:
return (psinfo->pr_lwp.pr_state == SZOMB) ? SUCCEED : FAIL;
}
return FAIL;
}
int PROC_MEM(AGENT_REQUEST *request, AGENT_RESULT *result)
{
char tmp[MAX_STRING_LEN], *procname, *proccomm, *param;
DIR *dir;
struct dirent *entries;
zbx_stat_t buf;
struct passwd *usrinfo;
psinfo_t psinfo; /* In the correct procfs.h, the structure name is psinfo_t */
int fd = -1;
zbx_uint64_t value = 0;
int do_task;
double memsize = 0;
zbx_uint64_t proccount = 0;
if (4 < request->nparam)
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Too many parameters."));
return SYSINFO_RET_FAIL;
}
procname = get_rparam(request, 0);
param = get_rparam(request, 1);
if (NULL != param && '\0' != *param)
{
errno = 0;
if (NULL == (usrinfo = getpwnam(param)))
{
if (0 == errno)
SET_MSG_RESULT(result, zbx_strdup(NULL, "Specified user does not exist."));
else
SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot obtain user information: %s",
zbx_strerror(errno)));
return SYSINFO_RET_FAIL;
}
}
else
usrinfo = NULL;
param = get_rparam(request, 2);
if (NULL == param || '\0' == *param || 0 == strcmp(param, "sum"))
do_task = ZBX_DO_SUM;
else if (0 == strcmp(param, "avg"))
do_task = ZBX_DO_AVG;
else if (0 == strcmp(param, "max"))
do_task = ZBX_DO_MAX;
else if (0 == strcmp(param, "min"))
do_task = ZBX_DO_MIN;
else
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid third parameter."));
return SYSINFO_RET_FAIL;
}
proccomm = get_rparam(request, 3);
if (NULL == (dir = opendir("/proc")))
{
SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot open /proc: %s", zbx_strerror(errno)));
return SYSINFO_RET_FAIL;
}
while (NULL != (entries = readdir(dir)))
{
if (-1 != fd)
{
close(fd);
fd = -1;
}
zbx_snprintf(tmp, sizeof(tmp), "/proc/%s/psinfo", entries->d_name);
if (0 != zbx_stat(tmp, &buf))
continue;
if (-1 == (fd = open(tmp, O_RDONLY)))
continue;
if (-1 == read(fd, &psinfo, sizeof(psinfo)))
continue;
if (NULL != procname && '\0' != *procname && 0 != strcmp(procname, psinfo.pr_fname))
continue;
if (NULL != usrinfo && usrinfo->pw_uid != psinfo.pr_uid)
continue;
if (NULL != proccomm && '\0' != *proccomm && NULL == zbx_regexp_match(psinfo.pr_psargs, proccomm, NULL))
continue;
value = psinfo.pr_size;
value <<= 10; /* kB to Byte */
if (0 == proccount++)
memsize = value;
else
{
if (ZBX_DO_MAX == do_task)
memsize = MAX(memsize, value);
else if (ZBX_DO_MIN == do_task)
memsize = MIN(memsize, value);
else
memsize += value;
}
}
closedir(dir);
if (-1 != fd)
close(fd);
if (ZBX_DO_AVG == do_task)
SET_DBL_RESULT(result, proccount == 0 ? 0 : memsize / proccount);
else
SET_UI64_RESULT(result, memsize);
return SYSINFO_RET_OK;
}
int PROC_NUM(AGENT_REQUEST *request, AGENT_RESULT *result)
{
char tmp[MAX_STRING_LEN], *procname, *proccomm, *param;
DIR *dir;
struct dirent *entries;
zbx_stat_t buf;
struct passwd *usrinfo;
psinfo_t psinfo; /* In the correct procfs.h, the structure name is psinfo_t */
int fd = -1;
int zbx_proc_stat;
zbx_uint64_t proccount = 0;
if (4 < request->nparam)
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Too many parameters."));
return SYSINFO_RET_FAIL;
}
procname = get_rparam(request, 0);
param = get_rparam(request, 1);
if (NULL != param && '\0' != *param)
{
errno = 0;
if (NULL == (usrinfo = getpwnam(param)))
{
if (0 == errno)
SET_MSG_RESULT(result, zbx_strdup(NULL, "Specified user does not exist."));
else
SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot obtain user information: %s",
zbx_strerror(errno)));
return SYSINFO_RET_FAIL;
}
}
else
usrinfo = NULL;
param = get_rparam(request, 2);
if (NULL == param || '\0' == *param || 0 == strcmp(param, "all"))
zbx_proc_stat = ZBX_PROC_STAT_ALL;
else if (0 == strcmp(param, "run"))
zbx_proc_stat = ZBX_PROC_STAT_RUN;
else if (0 == strcmp(param, "sleep"))
zbx_proc_stat = ZBX_PROC_STAT_SLEEP;
else if (0 == strcmp(param, "zomb"))
zbx_proc_stat = ZBX_PROC_STAT_ZOMB;
else
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid third parameter."));
return SYSINFO_RET_FAIL;
}
proccomm = get_rparam(request, 3);
if (NULL == (dir = opendir("/proc")))
{
SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot open /proc: %s", zbx_strerror(errno)));
return SYSINFO_RET_FAIL;
}
while (NULL != (entries = readdir(dir)))
{
if (-1 != fd)
{
close(fd);
fd = -1;
}
zbx_snprintf(tmp, sizeof(tmp), "/proc/%s/psinfo", entries->d_name);
if (0 != zbx_stat(tmp, &buf))
continue;
if (-1 == (fd = open(tmp, O_RDONLY)))
continue;
if (-1 == read(fd, &psinfo, sizeof(psinfo)))
continue;
if (NULL != procname && '\0' != *procname && 0 != strcmp(procname, psinfo.pr_fname))
continue;
if (NULL != usrinfo && usrinfo->pw_uid != psinfo.pr_uid)
continue;
if (FAIL == check_procstate(&psinfo, zbx_proc_stat))
continue;
if (NULL != proccomm && '\0' != *proccomm && NULL == zbx_regexp_match(psinfo.pr_psargs, proccomm, NULL))
continue;
proccount++;
}
closedir(dir);
if (-1 != fd)
close(fd);
SET_UI64_RESULT(result, proccount);
return SYSINFO_RET_OK;
}
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