/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ #pragma once /*** This file is part of systemd. Copyright 2008-2011 Lennart Poettering systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <inttypes.h> #include <sys/types.h> #include <assert.h> #include <sys/socket.h> struct address { unsigned char family; uint8_t address[16]; unsigned char scope; int ifindex; }; #define _public_ __attribute__ ((visibility("default"))) #define _hidden_ __attribute__ ((visibility("hidden"))) int ifconf_acquire_addresses(struct address **_list, unsigned *_n_list) _hidden_; static inline size_t PROTO_ADDRESS_SIZE(int proto) { assert(proto == AF_INET || proto == AF_INET6); return proto == AF_INET6 ? 16 : 4; } static inline int address_compare(const void *_a, const void *_b) { const struct address *a = _a, *b = _b; /* Order lowest scope first, IPv4 before IPv6, lowest interface index first */ if (a->scope < b->scope) return -1; if (a->scope > b->scope) return 1; if (a->family == AF_INET && b->family == AF_INET6) return -1; if (a->family == AF_INET6 && b->family == AF_INET) return 1; if (a->ifindex < b->ifindex) return -1; if (a->ifindex > b->ifindex) return 1; return 0; }