/*- * SPDX-License-Identifier: (BSD-2-Clause AND Beerware) * * Copyright (c) 2005-2006 The FreeBSD Project * All rights reserved. * * Author: Victor Cruceru * * 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): * 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 #include #include #include #include #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)(labs(tm->tm_gmtoff) / 3600); str[10] = (u_char)((labs(tm->tm_gmtoff) % 3600) / 60); return (11); }