1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
6 #include <sys/socket.h>
9 This file is part of nss-myhostname.
11 Copyright 2008-2011 Lennart Poettering
13 nss-myhostname is free software; you can redistribute it and/or
14 modify it under the terms of the GNU Lesser General Public License
15 as published by the Free Software Foundation; either version 2.1 of
16 the License, or (at your option) any later version.
18 nss-myhostname is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 Lesser General Public License for more details.
23 You should have received a copy of the GNU Lesser General Public
24 License along with nss-myhostname; If not, see
25 <http://www.gnu.org/licenses/>.
29 #include <sys/types.h>
39 #define _public_ __attribute__ ((visibility("default")))
40 #define _hidden_ __attribute__ ((visibility("hidden")))
42 int ifconf_acquire_addresses(struct address **_list, unsigned *_n_list) _hidden_;
44 static inline size_t PROTO_ADDRESS_SIZE(int proto) {
45 assert(proto == AF_INET || proto == AF_INET6);
47 return proto == AF_INET6 ? 16 : 4;
50 static inline int address_compare(const void *_a, const void *_b) {
51 const struct address *a = _a, *b = _b;
53 /* Order lowest scope first, IPv4 before IPv6, lowest interface index first */
55 if (a->scope < b->scope)
57 if (a->scope > b->scope)
60 if (a->family == AF_INET && b->family == AF_INET6)
62 if (a->family == AF_INET6 && b->family == AF_INET)
65 if (a->ifindex < b->ifindex)
67 if (a->ifindex > b->ifindex)