df40eee8ed
These use the (deprecated) IPv4 address classes to deduce the corresponding subnet masks. This is useful when addresses without subnet masks and prefix lengths are given. Make use of these new functions from sd-dhcp-lease.
50 lines
2 KiB
C
50 lines
2 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2014 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <netinet/in.h>
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#include "macro.h"
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#include "util.h"
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union in_addr_union {
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struct in_addr in;
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struct in6_addr in6;
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};
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int in_addr_is_null(int family, const union in_addr_union *u);
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int in_addr_is_link_local(int family, const union in_addr_union *u);
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int in_addr_equal(int family, const union in_addr_union *a, const union in_addr_union *b);
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int in_addr_prefix_intersect(int family, const union in_addr_union *a, unsigned aprefixlen, const union in_addr_union *b, unsigned bprefixlen);
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int in_addr_prefix_next(int family, union in_addr_union *u, unsigned prefixlen);
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int in_addr_to_string(int family, const union in_addr_union *u, char **ret);
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int in_addr_from_string(int family, const char *s, union in_addr_union *ret);
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int in_addr_from_string_auto(const char *s, int *family, union in_addr_union *ret);
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unsigned in_addr_netmask_to_prefixlen(const struct in_addr *addr);
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int in_addr_default_prefixlen(const struct in_addr *addr, unsigned char *prefixlen);
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int in_addr_default_subnet_mask(const struct in_addr *addr, struct in_addr *mask);
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static inline size_t FAMILY_ADDRESS_SIZE(int family) {
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assert(family == AF_INET || family == AF_INET6);
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return family == AF_INET6 ? 16 : 4;
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}
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