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Fix some of my mistakes, slight cleanup, improve reliability (the old

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ifconfig would segfault on "ifconfig ed0 ether up" and the like).

The main reason for this commit was that an "ifconfig -a" would also show
the AF_INET addresses in AF_IPX form (if the kernel was configured for IPX)
due to insufficient AF checking in my "new way" of doing it.
This commit is contained in:
Peter Wemm 1996-01-08 03:46:27 +00:00
parent b20235a04a
commit 79769a745d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=13329
1 changed files with 36 additions and 12 deletions
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48
sbin/ifconfig/ifconfig.c
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@ -185,7 +185,7 @@ struct afswtch {
SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) },
{ "iso", AF_ISO, iso_status, iso_getaddr,
SIOCDIFADDR_ISO, SIOCAIFADDR_ISO, C(iso_ridreq), C(iso_addreq) },
/* { "ether", AF_INET, ether_status, NULL }, XXX - broken */
{ "ether", AF_INET, ether_status, NULL },
{ 0, 0, 0, 0 }
};
@ -424,6 +424,13 @@ ifconfig(argc,argv,af,rafp)
if (setsockopt(s, 0, SO_NSIP_ROUTE, &rq, size) < 0)
Perror("Encapsulation Routing");
}
if (clearaddr) {
if (rafp->af_ridreq == NULL || rafp->af_difaddr == 0) {
warnx("interface %s cannot change %s addresses!",
name, rafp->af_name);
clearaddr = NULL;
}
}
if (clearaddr) {
int ret;
strncpy(rafp->af_ridreq, name, sizeof ifr.ifr_name);
@ -434,6 +441,13 @@ ifconfig(argc,argv,af,rafp)
Perror("ioctl (SIOCDIFADDR)");
}
}
if (newaddr) {
if (rafp->af_ridreq == NULL || rafp->af_difaddr == 0) {
warnx("interface %s cannot change %s addresses!",
name, rafp->af_name);
newaddr = NULL;
}
}
if (newaddr) {
strncpy(rafp->af_addreq, name, sizeof ifr.ifr_name);
if (ioctl(s, rafp->af_aifaddr, rafp->af_addreq) < 0)
@ -583,6 +597,13 @@ status()
printf(" mtu %d", mtu);
putchar('\n');
/*
* XXX: Sigh. This is bad, I know. At this point, we may have
* *zero* RTM_NEWADDR's, so we have to "feel the water" before
* incrementing the loop. One day, I might feel inspired enough
* to get the top level loop to pass a count down here so we
* dont have to mess with this. -Peter
*/
myifm = ifm;
while (1) {
@ -610,13 +631,16 @@ status()
if ((p = afp) != NULL) {
(*p->af_status)(1);
if (p->af_status != ether_status)
(*p->af_status)(1);
} else for (p = afs; p->af_name; p++) {
ifr.ifr_addr.sa_family = p->af_af;
(*p->af_status)(0);
if (p->af_status != ether_status)
(*p->af_status)(0);
}
}
ether_status();
if (afp == NULL || afp->af_status == ether_status)
ether_status();
}
in_status(force)
@ -629,10 +653,10 @@ in_status(force)
memset(&null_sin, 0, sizeof(null_sin));
sin = (struct sockaddr_in *)info.rti_info[RTAX_IFA];
if (!sin) {
if (!sin || sin->sin_family != AF_INET) {
if (!force)
return;
warnx("%s has no AF_INET IFA address!", name);
/* warnx("%s has no AF_INET IFA address!", name); */
sin = &null_sin;
}
printf("\tinet %s ", inet_ntoa(sin->sin_addr));
@ -676,10 +700,10 @@ ipx_status(force)
memset(&null_sipx, 0, sizeof(null_sipx));
sipx = (struct sockaddr_ipx *)info.rti_info[RTAX_IFA];
if (!sipx) {
if (!sipx || sipx->sipx_family != AF_IPX) {
if (!force)
return;
warnx("%s has no AF_IPX IFA address!", name);
/* warnx("%s has no AF_IPX IFA address!", name); */
sipx = &null_sipx;
}
printf("\tipx %s ", ipx_ntoa(sipx->sipx_addr));
@ -710,10 +734,10 @@ xns_status(force)
memset(&null_sns, 0, sizeof(null_sns));
sns = (struct sockaddr_ns *)info.rti_info[RTAX_IFA];
if (!sns) {
if (!sns || sns->sns_family != AF_NS) {
if (!force)
return;
warnx("%s has no AF_NS IFA address!", name);
/* warnx("%s has no AF_NS IFA address!", name); */
sns = &null_sns;
}
printf("\tns %s ", ns_ntoa(sns->sns_addr));
@ -745,10 +769,10 @@ iso_status(force)
memset(&null_siso, 0, sizeof(null_siso));
siso = (struct sockaddr_iso *)info.rti_info[RTAX_IFA];
if (!siso) {
if (!siso || siso->siso_family != AF_ISO) {
if (!force)
return;
warnx("%s has no AF_ISO IFA address!", name);
/* warnx("%s has no AF_ISO IFA address!", name); */
siso = &null_siso;
}
printf("\tiso %s ", iso_ntoa(&siso->siso_addr));