7f5f010bbd
. remove minix ping
. add support for socket(AF_INET, SOCK_RAW, {IPPROTO_ICMP,IPPROTO_UDP})
. gives test48 a better chance of detecting network connectivity
Change-Id: Ia678546d27ac378642f1160a141e1fc33458cce2
147 lines
4.1 KiB
C
147 lines
4.1 KiB
C
/* $NetBSD: ifaddrlist.c,v 1.10 2011/09/11 01:06:26 christos Exp $ */
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/*
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* Copyright (c) 1997, 1998, 1999, 2000
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the Computer Systems
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* Engineering Group at Lawrence Berkeley Laboratory.
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* 4. Neither the name of the University nor of the Laboratory may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static const char rcsid[] =
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"@(#) Header: ifaddrlist.c,v 1.2 97/04/22 13:31:05 leres Exp (LBL)";
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"@(#) Id: ifaddrlist.c,v 1.9 2000/11/23 20:01:55 leres Exp (LBL)";
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#else
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__RCSID("$NetBSD: ifaddrlist.c,v 1.10 2011/09/11 01:06:26 christos Exp $");
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#endif
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#endif
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#include <sys/param.h>
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#include <sys/file.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#ifdef HAVE_SYS_SOCKIO_H
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#include <sys/sockio.h>
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#endif
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#include <sys/time.h> /* concession to AIX */
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struct mbuf;
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struct rtentry;
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#include <net/if.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <ctype.h>
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#include <errno.h>
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#include <memory.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <ifaddrs.h>
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#include "gnuc.h"
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#ifdef HAVE_OS_PROTO_H
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#include "os-proto.h"
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#endif
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#include "ifaddrlist.h"
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/* Not all systems have IFF_LOOPBACK */
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#ifdef IFF_LOOPBACK
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#define ISLOOPBACK(p) ((p)->ifa_flags & IFF_LOOPBACK)
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#else
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#define ISLOOPBACK(p) (strcmp((p)->ifa_name, "lo0") == 0)
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#endif
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/*
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* Return the interface list
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*/
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ssize_t
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ifaddrlist(struct ifaddrlist **ipaddrp, char *errbuf, size_t buflen)
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{
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struct sockaddr_in *sin;
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struct ifaddrs *ifap = NULL, *ifa;
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struct ifaddrlist *al = NULL, *nal;
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size_t i = 0, maxal = 10;
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if (getifaddrs(&ifap) != 0)
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goto out;
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if ((al = malloc(maxal * sizeof(*al))) == NULL)
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goto out;
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for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
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if (ifa->ifa_addr->sa_family != AF_INET)
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continue;
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/* Must be up */
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if ((ifa->ifa_flags & IFF_UP) == 0)
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continue;
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/*
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* Must not be a loopback address (127/8)
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*/
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sin = (struct sockaddr_in *)ifa->ifa_addr;
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if (ISLOOPBACK(ifa))
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if (ntohl(sin->sin_addr.s_addr) == INADDR_LOOPBACK)
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continue;
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if (i == maxal) {
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maxal <<= 1;
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if ((nal = realloc(al, maxal * sizeof(*al))) == NULL)
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goto out;
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al = nal;
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}
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al[i].addr = sin->sin_addr.s_addr;
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if ((al[i].device = strdup(ifa->ifa_name)) == NULL)
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goto out;
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i++;
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}
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if ((nal = realloc(al, i * sizeof(*al))) == NULL)
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goto out;
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freeifaddrs(ifap);
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*ipaddrp = nal;
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return (ssize_t)i;
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out:
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if (ifap)
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freeifaddrs(ifap);
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if (al) {
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while (i > 0)
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free(al[--i].device);
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free(al);
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}
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(void)snprintf(errbuf, buflen, "%s: %s", __func__, strerror(errno));
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return -1;
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}
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