isc/unix/ifiter_getifaddrs.c

55 	isc_interfaceiter_t *iter;
64 	iter = isc_mem_get(mctx, sizeof(*iter));
65 	if (iter == NULL)
68 	iter->mctx = mctx;
69 	iter->buf = NULL;
70 	iter->bufsize = 0;
71 	iter->ifaddrs = NULL;
78 		iter->proc = fopen("/proc/net/if_inet6", "r");
79 		if (iter->proc == NULL) {
86 		iter->proc = NULL;
87 	iter->valid = ISC_R_FAILURE;
92 		if ((ret = getifaddrs(&iter->ifaddrs)) >= 0)
114 	iter->pos = NULL;
115 	iter->result = ISC_R_FAILURE;
117 	iter->magic = IFITER_MAGIC;
118 	*iterp = iter;
123 	if (iter->proc != NULL)
124 		fclose(iter->proc);
126 	if (iter->ifaddrs != NULL) /* just in case */
127 		freeifaddrs(iter->ifaddrs);
128 	isc_mem_put(mctx, iter, sizeof(*iter));
133  * Get information about the current interface to iter->current.
140 internal_current(isc_interfaceiter_t *iter) {
145 	REQUIRE(VALID_IFITER(iter));
147 	ifa = iter->pos;
152 	 * burnicki: iter->pos is usually never NULL here (anymore?),
153 	 * so linux_if_inet6_current(iter) is never called here.
158 	if (iter->pos == NULL)
159 		return (linux_if_inet6_current(iter));
188 	memset(&iter->current, 0, sizeof(iter->current));
191 	if (namelen > sizeof(iter->current.name) - 1)
192 		namelen = sizeof(iter->current.name) - 1;
194 	memset(iter->current.name, 0, sizeof(iter->current.name));
195 	memcpy(iter->current.name, ifa->ifa_name, namelen);
197 	iter->current.flags = 0;
200 		iter->current.flags |= INTERFACE_F_UP;
203 		iter->current.flags |= INTERFACE_F_POINTTOPOINT;
206 		iter->current.flags |= INTERFACE_F_LOOPBACK;
209 		iter->current.flags |= INTERFACE_F_BROADCAST;
213 		iter->current.flags |= INTERFACE_F_MULTICAST;
216 	iter->current.af = family;
218 	get_addr(family, &iter->current.address, ifa->ifa_addr, ifa->ifa_name);
221 		get_addr(family, &iter->current.netmask, ifa->ifa_netmask,
225 	    (iter->current.flags & INTERFACE_F_POINTTOPOINT) != 0)
226 		get_addr(family, &iter->current.dstaddress, ifa->ifa_dstaddr,
230 	    (iter->current.flags & INTERFACE_F_BROADCAST) != 0)
231 		get_addr(family, &iter->current.broadcast, ifa->ifa_broadaddr,
235 	iter->current.ifindex = if_nametoindex(iter->current.name);
248 internal_next(isc_interfaceiter_t *iter) {
250 	if (iter->pos != NULL)
251 		iter->pos = iter->pos->ifa_next;
252 	if (iter->pos == NULL) {
255 			return (linux_if_inet6_next(iter));
264 internal_destroy(isc_interfaceiter_t *iter) {
267 	if (iter->proc != NULL)
268 		fclose(iter->proc);
269 	iter->proc = NULL;
271 	if (iter->ifaddrs)
272 		freeifaddrs(iter->ifaddrs);
273 	iter->ifaddrs = NULL;
277 void internal_first(isc_interfaceiter_t *iter) {
280 	linux_if_inet6_first(iter);
282 	iter->pos = iter->ifaddrs;