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use getifaddrs, not SIOCGIFCONF, to avoid alignment constraints.

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TODO: maybe it's better to pass struct ifaddrs * to in{,6}_alias.
This commit is contained in:
itojun 2000-04-13 07:39:57 +00:00
parent dbe85fd5ef
commit 4a58ed7b4f
2 changed files with 112 additions and 3 deletions
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3
sbin/ifconfig/Makefile
View File

@ -1,10 +1,11 @@
# $NetBSD: Makefile,v 1.11 1999/12/13 15:24:45 itojun Exp $
# $NetBSD: Makefile,v 1.12 2000/04/13 07:39:57 itojun Exp $
# @(#)Makefile 8.1 (Berkeley) 6/5/93
PROG= ifconfig
MAN= ifconfig.8
CPPFLAGS+=-DINET6
CPPFLAGS+=-DHAVE_IFADDRS_H
# KAME scope id hack
CPPFLAGS+=-DKAME_SCOPEID

112
sbin/ifconfig/ifconfig.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: ifconfig.c,v 1.77 2000/04/13 07:16:54 itojun Exp $ */
/* $NetBSD: ifconfig.c,v 1.78 2000/04/13 07:39:57 itojun Exp $ */
/*-
* Copyright (c) 1997, 1998, 2000 The NetBSD Foundation, Inc.
@ -80,7 +80,7 @@ __COPYRIGHT("@(#) Copyright (c) 1983, 1993\n\
#if 0
static char sccsid[] = "@(#)ifconfig.c 8.2 (Berkeley) 2/16/94";
#else
__RCSID("$NetBSD: ifconfig.c,v 1.77 2000/04/13 07:16:54 itojun Exp $");
__RCSID("$NetBSD: ifconfig.c,v 1.78 2000/04/13 07:39:57 itojun Exp $");
#endif
#endif /* not lint */
@ -120,6 +120,9 @@ __RCSID("$NetBSD: ifconfig.c,v 1.77 2000/04/13 07:16:54 itojun Exp $");
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#ifdef HAVE_IFADDRS_H
#include <ifaddrs.h>
#endif
struct ifreq ifr, flagreq, ridreq;
struct ifaliasreq addreq __attribute__((aligned(4)));
@ -614,6 +617,66 @@ getinfo(ifr)
void
printall()
{
#ifdef HAVE_IFADDRS_H
struct ifaddrs *ifap, *ifa;
struct ifreq ifr;
const struct sockaddr_dl *sdl;
int idx;
char *p;
if (getifaddrs(&ifap) != 0)
err(1, "getifaddrs");
p = NULL;
idx = 0;
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, ifa->ifa_name, sizeof(ifr.ifr_name));
if (sizeof(ifr.ifr_addr) >= ifa->ifa_addr->sa_len) {
memcpy(&ifr.ifr_addr, ifa->ifa_addr,
ifa->ifa_addr->sa_len);
}
if (ifa->ifa_addr->sa_family == AF_LINK)
sdl = (const struct sockaddr_dl *) ifa->ifa_addr;
if (p && strcmp(p, ifa->ifa_name) == 0)
continue;
(void) strncpy(name, ifa->ifa_name, sizeof(name));
name[sizeof(name) - 1] = '\0';
p = ifa->ifa_name;
if (getinfo(&ifr) < 0)
continue;
if (bflag && (ifa->ifa_flags & (IFF_POINTOPOINT|IFF_LOOPBACK)))
continue;
if (dflag && (ifa->ifa_flags & IFF_UP) != 0)
continue;
if (uflag && (ifa->ifa_flags & IFF_UP) == 0)
continue;
if (sflag && carrier())
continue;
idx++;
/*
* Are we just listing the interfaces?
*/
if (lflag) {
if (idx > 1)
putchar(' ');
fputs(name, stdout);
continue;
}
if (sdl == NULL) {
status(NULL, 0);
} else {
status(LLADDR(sdl), sdl->sdl_alen);
sdl = NULL;
}
}
if (lflag)
putchar('\n');
freeifaddrs(ifap);
#else
char inbuf[8192];
const struct sockaddr_dl *sdl = NULL;
struct ifconf ifc;
@ -686,6 +749,7 @@ printall()
}
if (lflag)
putchar('\n');
#endif
}
#define RIDADDR 0
@ -1428,6 +1492,27 @@ void
in_status(force)
int force;
{
#ifdef HAVE_IFADDRS_H
struct ifaddrs *ifap, *ifa;
struct ifreq ifr;
if (getifaddrs(&ifap) != 0)
err(1, "getifaddrs");
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
if (strcmp(name, ifa->ifa_name) != 0)
continue;
if (ifa->ifa_addr->sa_family != AF_INET)
continue;
if (sizeof(ifr.ifr_addr) < ifa->ifa_addr->sa_len)
continue;
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, ifa->ifa_name, sizeof(ifr.ifr_name));
memcpy(&ifr.ifr_addr, ifa->ifa_addr, ifa->ifa_addr->sa_len);
in_alias(&ifr);
}
freeifaddrs(ifap);
#else
char inbuf[8192];
struct ifconf ifc;
struct ifreq *ifr;
@ -1464,6 +1549,7 @@ in_status(force)
in_alias(ifr);
}
}
#endif
}
void
@ -1609,6 +1695,27 @@ void
in6_status(force)
int force;
{
#ifdef HAVE_IFADDRS_H
struct ifaddrs *ifap, *ifa;
struct in6_ifreq ifr;
if (getifaddrs(&ifap) != 0)
err(1, "getifaddrs");
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
if (strcmp(name, ifa->ifa_name) != 0)
continue;
if (ifa->ifa_addr->sa_family != AF_INET6)
continue;
if (sizeof(ifr.ifr_addr) < ifa->ifa_addr->sa_len)
continue;
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, ifa->ifa_name, sizeof(ifr.ifr_name));
memcpy(&ifr.ifr_addr, ifa->ifa_addr, ifa->ifa_addr->sa_len);
in6_alias(&ifr);
}
freeifaddrs(ifap);
#else
char inbuf[8192];
struct ifconf ifc;
struct ifreq *ifr;
@ -1645,6 +1752,7 @@ in6_status(force)
in6_alias((struct in6_ifreq *)ifr);
}
}
#endif
}
#endif /*INET6*/