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/*-
* Copyright (c) 2005-2006 The FreeBSD Project
* All rights reserved.
*
* Author: Victor Cruceru <soc-victor@freebsd.org>
*
* Redistribution of this software and documentation and use in source and
* binary forms, with or without modification, are permitted provided that
* the following conditions are met:
*
* 1. Redistributions of source code or documentation must retain the above
* copyright notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This C file contains code developed by Poul-Henning Kamp under the
* following license:
*
* FreeBSD: src/sbin/mdconfig/mdconfig.c,v 1.33.2.1 2004/09/14 03:32:21 jmg Exp
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*
* $FreeBSD$
*/
/*
* Host Resources MIB implementation for bsnmpd.
*/
#include <paths.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include "hostres_snmp.h"
#include "hostres_oid.h"
#include "hostres_tree.h"
/* Internal id got after we'll register this module with the agent */
static u_int host_registration_id = 0;
/* This our hostres module */
static struct lmodule *hostres_module;
/* See the generated file hostres_oid.h */
static const struct asn_oid oid_host = OIDX_host;
/* descriptor to access kernel memory */
kvm_t *hr_kd;
/*
* HOST RESOURCES mib module finalization hook.
* Returns 0 on success, < 0 on error
*/
static int
hostres_fini(void)
{
if (hr_kd != NULL)
(void)kvm_close(hr_kd);
fini_storage_tbl();
fini_fs_tbl();
fini_processor_tbl();
fini_disk_storage_tbl();
fini_device_tbl();
fini_partition_tbl();
fini_network_tbl();
fini_printer_tbl();
fini_swrun_tbl();
fini_swins_tbl();
fini_scalars();
if (host_registration_id > 0)
or_unregister(host_registration_id);
HRDBG("done.");
return (0);
}
/*
* HOST RESOURCES mib module initialization hook.
* Returns 0 on success, < 0 on error
*/
static int
hostres_init(struct lmodule *mod, int argc __unused, char *argv[] __unused)
{
hostres_module = mod;
/*
* NOTE: order of these calls is important here!
*/
if ((hr_kd = kvm_open(NULL, _PATH_DEVNULL, NULL, O_RDONLY,
"kvm_open")) == NULL) {
syslog(LOG_ERR, "kvm_open failed: %m ");
return (-1);
}
/*
* The order is relevant here, because some table depend on each other.
*/
init_device_tbl();
/* populates partition table too */
if (init_disk_storage_tbl()) {
hostres_fini();
return (-1);
}
init_processor_tbl();
init_printer_tbl();
/*
* populate storage and FS tables. Must be done after device
* initialisation because the FS refresh code calls into the
* partition refresh code.
*/
init_storage_tbl();
/* also the hrSWRunPerfTable's support is initialized here */
init_swrun_tbl();
init_swins_tbl();
HRDBG("done.");
return (0);
}
/*
* HOST RESOURCES mib module start operation
* returns nothing
*/
static void
hostres_start(void)
{
host_registration_id = or_register(&oid_host,
"The MIB module for Host Resource MIB (RFC 2790).",
hostres_module);
start_device_tbl(hostres_module);
start_processor_tbl(hostres_module);
start_network_tbl();
HRDBG("done.");
}
/* this identifies the HOST RESOURCES mib module */
const struct snmp_module config = {
"This module implements the host resource mib (rfc 2790)",
hostres_init,
hostres_fini,
NULL, /* idle function, do not use it */
NULL,
NULL,
hostres_start,
NULL, /* proxy a PDU */
hostres_ctree, /* see the generated hostres_tree.h */
hostres_CTREE_SIZE, /* see the generated hostres_tree.h */
NULL
};
/**
* Make an SNMP DateAndTime from a struct tm. This should be in the library.
*/
int
make_date_time(u_char *str, const struct tm *tm, u_int decisecs)
{
str[0] = (u_char)((tm->tm_year + 1900) >> 8);
str[1] = (u_char)(tm->tm_year + 1900);
str[2] = tm->tm_mon + 1;
str[3] = tm->tm_mday;
str[4] = tm->tm_hour;
str[5] = tm->tm_min;
str[6] = tm->tm_sec;
str[7] = decisecs;
if (tm->tm_gmtoff < 0)
str[8] = '-';
else
str[8] = '+';
str[9] = (u_char)(abs(tm->tm_gmtoff) / 3600);
str[10] = (u_char)((abs(tm->tm_gmtoff) % 3600) / 60);
return (11);
}
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