freebsd-nq/sbin/ifconfig/af_link.c
Sam Leffler 90c4b74cbe Fix special status reporting. Prior to the reorg there was
special-purpose code to display status for an interface for
state that was not address-oriented.  This status reporting
was merged in to the address-oriented status reporting but
did not work for link address reporting (as discovered with
fwip interfaces).  Correct this mis-merge and eliminate the
bogus kludge that was used for link-level address reporting.

o add an af_other_status method for an address family for
  reporting status of things like media, vlan, etc.
o call the af_other_status methods after reporting address
  status for an interface
o special-case link address status; when reporting all
  status for an interface invoke it specially prior to
  reporting af_other_status methods (since it requires the
  sockaddr_dl that is passed in to status separately from
  the rtmsg address state)
o correct the calling convention for link address status;
  don't cast types, construct the proper parameter

This fixes ifconfig on fwip interfaces.
2004-12-31 19:46:27 +00:00

128 lines
3.7 KiB
C

/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution 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 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.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*/
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/route.h> /* for RTX_IFA */
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/ethernet.h>
#include "ifconfig.h"
static struct ifreq link_ridreq;
static void
link_status(int s __unused, const struct rt_addrinfo *info)
{
const struct sockaddr_dl *sdl =
(const struct sockaddr_dl *) info->rti_info[RTAX_IFA];
if (sdl != NULL && sdl->sdl_alen > 0) {
if (sdl->sdl_type == IFT_ETHER &&
sdl->sdl_alen == ETHER_ADDR_LEN)
printf("\tether %s\n",
ether_ntoa((const struct ether_addr *)LLADDR(sdl)));
else {
int n = sdl->sdl_nlen > 0 ? sdl->sdl_nlen + 1 : 0;
printf("\tlladdr %s\n", link_ntoa(sdl) + n);
}
}
}
static void
link_getaddr(const char *addr, int which)
{
char *temp;
struct sockaddr_dl sdl;
struct sockaddr *sa = &link_ridreq.ifr_addr;
if (which != ADDR)
errx(1, "can't set link-level netmask or broadcast");
if ((temp = malloc(strlen(addr) + 1)) == NULL)
errx(1, "malloc failed");
temp[0] = ':';
strcpy(temp + 1, addr);
sdl.sdl_len = sizeof(sdl);
link_addr(temp, &sdl);
free(temp);
if (sdl.sdl_alen > sizeof(sa->sa_data))
errx(1, "malformed link-level address");
sa->sa_family = AF_LINK;
sa->sa_len = sdl.sdl_alen;
bcopy(LLADDR(&sdl), sa->sa_data, sdl.sdl_alen);
}
static struct afswtch af_link = {
.af_name = "link",
.af_af = AF_LINK,
.af_status = link_status,
.af_getaddr = link_getaddr,
.af_aifaddr = SIOCSIFLLADDR,
.af_addreq = &link_ridreq,
};
static struct afswtch af_ether = {
.af_name = "ether",
.af_af = AF_LINK,
.af_status = link_status,
.af_getaddr = link_getaddr,
.af_aifaddr = SIOCSIFLLADDR,
.af_addreq = &link_ridreq,
};
static struct afswtch af_lladdr = {
.af_name = "lladdr",
.af_af = AF_LINK,
.af_status = link_status,
.af_getaddr = link_getaddr,
.af_aifaddr = SIOCSIFLLADDR,
.af_addreq = &link_ridreq,
};
static __constructor void
link_ctor(void)
{
af_register(&af_link);
af_register(&af_ether);
af_register(&af_lladdr);
}