Line data    Source code

       1             : /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
       2             : 
       3             : #pragma once
       4             : 
       5             : /***
       6             :   This file is part of systemd.
       7             : 
       8             :   Copyright 2014 Lennart Poettering
       9             : 
      10             :   systemd is free software; you can redistribute it and/or modify it
      11             :   under the terms of the GNU Lesser General Public License as published by
      12             :   the Free Software Foundation; either version 2.1 of the License, or
      13             :   (at your option) any later version.
      14             : 
      15             :   systemd is distributed in the hope that it will be useful, but
      16             :   WITHOUT ANY WARRANTY; without even the implied warranty of
      17             :   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
      18             :   Lesser General Public License for more details.
      19             : 
      20             :   You should have received a copy of the GNU Lesser General Public License
      21             :   along with systemd; If not, see <http://www.gnu.org/licenses/>.
      22             : ***/
      23             : 
      24             : #include <netinet/in.h>
      25             : 
      26             : #include "macro.h"
      27             : #include "util.h"
      28             : 
      29             : union in_addr_union {
      30             :         struct in_addr in;
      31             :         struct in6_addr in6;
      32             : };
      33             : 
      34             : int in_addr_is_null(int family, const union in_addr_union *u);
      35             : int in_addr_is_link_local(int family, const union in_addr_union *u);
      36             : int in_addr_equal(int family, const union in_addr_union *a, const union in_addr_union *b);
      37             : int in_addr_prefix_intersect(int family, const union in_addr_union *a, unsigned aprefixlen, const union in_addr_union *b, unsigned bprefixlen);
      38             : int in_addr_prefix_next(int family, union in_addr_union *u, unsigned prefixlen);
      39             : int in_addr_to_string(int family, const union in_addr_union *u, char **ret);
      40             : int in_addr_from_string(int family, const char *s, union in_addr_union *ret);
      41             : int in_addr_from_string_auto(const char *s, int *family, union in_addr_union *ret);
      42             : unsigned char in_addr_netmask_to_prefixlen(const struct in_addr *addr);
      43             : struct in_addr* in_addr_prefixlen_to_netmask(struct in_addr *addr, unsigned char prefixlen);
      44             : int in_addr_default_prefixlen(const struct in_addr *addr, unsigned char *prefixlen);
      45             : int in_addr_default_subnet_mask(const struct in_addr *addr, struct in_addr *mask);
      46             : int in_addr_mask(int family, union in_addr_union *addr, unsigned char prefixlen);
      47             : 
      48           0 : static inline size_t FAMILY_ADDRESS_SIZE(int family) {
      49           0 :         assert(family == AF_INET || family == AF_INET6);
      50           0 :         return family == AF_INET6 ? 16 : 4;
      51             : }
      52             : 
      53             : #define IN_ADDR_NULL ((union in_addr_union) {})