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* net.cc (if_nametoindex): Fix typo in call to get_adapters_addresses. 

(if_indextoname): Prefer IPv6 loopback device name over IPv4 loopback
	device name on pre-Vista systems.
	(if_nameindex): Ditto.
This commit is contained in:
Corinna Vinschen 2008-06-10 18:15:57 +00:00
parent 7a2c0a0d6b
commit bbfcc68ad2
2 changed files with 29 additions and 1 deletions
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7
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,10 @@
2008-06-10 Corinna Vinschen <corinna@vinschen.de>
* net.cc (if_nametoindex): Fix typo in call to get_adapters_addresses.
(if_indextoname): Prefer IPv6 loopback device name over IPv4 loopback
device name on pre-Vista systems.
(if_nameindex): Ditto.
2008-06-10 Corinna Vinschen <corinna@vinschen.de>
* fhandler_procnet.cc (format_procnet_ifinet6): Use sprintf rather than

23
winsup/cygwin/net.cc
View File

@ -2037,7 +2037,7 @@ if_nametoindex (const char *name)
return 0;
if (wincap.has_gaa_prefixes ()
&& get_adapters_addresses (&pap, AF_UNSPEC))
&& get_adapters_addresses (&pa0, AF_UNSPEC))
{
char lname[IF_NAMESIZE], *c;
@ -2072,6 +2072,19 @@ if_indextoname (unsigned ifindex, char *ifname)
for (pap = pa0; pap; pap = pap->Next)
if (ifindex == (pap->Ipv6IfIndex ?: pap->IfIndex))
{
/* Unfortunately the pre-Vista IPv6 stack has a distinct loopback
device with the same Ipv6IfIndex as the IfIndex of the IPv4
loopback device, but with a different adapter name.
For consistency with /proc/net/if_inet6, try to find the
IPv6 loopback device and use that adapter name instead.
We identify the loopback device by its IfIndex of 1. */
if (pap->IfIndex == 1 && pap->Ipv6IfIndex == 0)
for (PIP_ADAPTER_ADDRESSES pap2 = pa0; pap2; pap2 = pap2->Next)
if (pap2->Ipv6IfIndex == 1)
{
pap = pap2;
break;
}
name = strcpy (ifname, pap->AdapterName);
break;
}
@ -2114,6 +2127,14 @@ if_nameindex (void)
goto outer_loop;
iflist[cnt].if_index = pap->Ipv6IfIndex ?: pap->IfIndex;
strcpy (iflist[cnt].if_name = ifnamelist[cnt], pap->AdapterName);
/* See comment in if_indextoname. */
if (pap->IfIndex == 1 && pap->Ipv6IfIndex == 0)
for (PIP_ADAPTER_ADDRESSES pap2 = pa0; pap2; pap2 = pap2->Next)
if (pap2->Ipv6IfIndex == 1)
{
strcpy (ifnamelist[cnt], pap2->AdapterName);
break;
}
++cnt;
outer_loop:
;