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- /* $Id: sm_if.c,v 1.18 2007/12/11 14:17:59 dijkstra Exp $ */
- /*
- * Copyright (c) 2001-2007 Willem Dijkstra
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * - 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 COPYRIGHT HOLDERS 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
- * COPYRIGHT HOLDERS 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.
- *
- */
- /*
- * Get current interface statistics from kernel and return them in symon_buf as
- *
- * ipackets : opackets : ibytes : obytes : imcasts : omcasts : ierrors :
- * oerrors : colls : drops
- */
- #include <sys/types.h>
- #include <sys/ioctl.h>
- #include <sys/socket.h>
- #include <sys/sockio.h>
- #include <net/if.h>
- #include <net/if_dl.h>
- #include <net/if_types.h>
- #include <netinet/in.h>
- #include <netinet/in_var.h>
- #include <errno.h>
- #include <limits.h>
- #include <string.h>
- #include "error.h"
- #include "symon.h"
- /* Globals for this module start with if_ */
- static int if_s = -1;
- void
- init_if(struct stream *st)
- {
- if (if_s == -1) {
- if ((if_s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
- fatal("%s:%d: socket failed, %.200",
- __FILE__, __LINE__, strerror(errno));
- }
- }
- strncpy(st->parg.ifr.ifr_name, st->arg, IFNAMSIZ - 1);
- st->parg.ifr.ifr_name[IFNAMSIZ - 1] = '\0';
- info("started module if(%.200s)", st->arg);
- }
- void
- gets_if()
- {
- /* EMPTY */
- }
- int
- get_if(char *symon_buf, int maxlen, struct stream *st)
- {
- struct if_data ifdata;
- st->parg.ifr.ifr_data = (caddr_t) &ifdata;
- if (ioctl(if_s, SIOCGIFDATA, &st->parg.ifr)) {
- warning("if(%.200s) failed (ioctl error)", st->arg);
- return 0;
- }
- return snpack(symon_buf, maxlen, st->arg, MT_IF2,
- (u_int64_t) ifdata.ifi_ipackets,
- (u_int64_t) ifdata.ifi_opackets,
- (u_int64_t) ifdata.ifi_ibytes,
- (u_int64_t) ifdata.ifi_obytes,
- (u_int64_t) ifdata.ifi_imcasts,
- (u_int64_t) ifdata.ifi_omcasts,
- (u_int64_t) ifdata.ifi_ierrors,
- (u_int64_t) ifdata.ifi_oerrors,
- (u_int64_t) ifdata.ifi_collisions,
- (u_int64_t) ifdata.ifi_iqdrops);
- }
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