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Use SIOCGIFNETMASK6 to get IPv6 interface netmasks.

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This is used when SIOCGIFNETMASK_IN6 isn't available.
This commit is contained in:
david 2011-09-28 06:55:48 +00:00
parent 31f12a071c
commit ddb4829b2b
1 changed files with 22 additions and 1 deletions
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23
libdnet-stripped/src/intf.c
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@ -33,6 +33,10 @@
# include <netinet/in.h>
# include <netinet/in_var.h>
#endif
#ifdef HAVE_NETINET_IN6_VAR_H
# include <sys/protosw.h>
# include <netinet/in6_var.h>
#endif
#include <errno.h>
#include <stdio.h>
@ -134,7 +138,7 @@ intf_open(void)
setsockopt(intf->fd, SOL_SOCKET, SO_BROADCAST,
(const char *) &one, sizeof(one));
#ifdef SIOCGIFNETMASK_IN6
#if defined(SIOCGIFNETMASK_IN6) || defined(SIOCGIFNETMASK6)
if ((intf->fd6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
# ifdef EPROTONOSUPPORT
if (errno != EPROTONOSUPPORT)
@ -547,6 +551,23 @@ _intf_get_aliases(intf_t *intf, struct intf_entry *entry)
}
else perror("SIOCGIFNETMASK_IN6");
}
#else
#ifdef SIOCGIFNETMASK6
else if (ap->addr_type == ADDR_TYPE_IP6 && intf->fd6 != -1) {
struct in6_ifreq ifr6;
/* XXX - sizeof(ifr) < sizeof(ifr6) */
memcpy(&ifr6, ifr, sizeof(ifr6));
if (ioctl(intf->fd6, SIOCGIFNETMASK6, &ifr6) == 0) {
/* For some reason this is 0 after the ioctl. */
ifr6.ifr_Addr.sin6_family = AF_INET6;
addr_stob((struct sockaddr *)&ifr6.ifr_Addr,
&ap->addr_bits);
}
else perror("SIOCGIFNETMASK6");
}
#endif
#endif
ap++, entry->intf_alias_num++;
}