1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2014 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
22 #include "resolved-dns-server.h"
30 const union in_addr_union *in_addr) {
35 assert((type == DNS_SERVER_LINK) == !!l);
38 s = new0(DnsServer, 1);
44 s->address = *in_addr;
46 if (type == DNS_SERVER_LINK) {
47 LIST_FIND_TAIL(servers, l->dns_servers, tail);
48 LIST_INSERT_AFTER(servers, l->dns_servers, tail, s);
50 } else if (type == DNS_SERVER_SYSTEM) {
51 LIST_FIND_TAIL(servers, m->dns_servers, tail);
52 LIST_INSERT_AFTER(servers, m->dns_servers, tail, s);
53 } else if (type == DNS_SERVER_FALLBACK) {
54 LIST_FIND_TAIL(servers, m->fallback_dns_servers, tail);
55 LIST_INSERT_AFTER(servers, m->fallback_dns_servers, tail, s);
57 assert_not_reached("Unknown server type");
61 /* A new DNS server that isn't fallback is added and the one
62 * we used so far was a fallback one? Then let's try to pick
64 if (type != DNS_SERVER_FALLBACK &&
65 s->manager->current_dns_server &&
66 s->manager->current_dns_server->type == DNS_SERVER_FALLBACK)
67 manager_set_dns_server(s->manager, NULL);
75 DnsServer* dns_server_free(DnsServer *s) {
80 if (s->type == DNS_SERVER_LINK)
81 LIST_REMOVE(servers, s->link->dns_servers, s);
82 else if (s->type == DNS_SERVER_SYSTEM)
83 LIST_REMOVE(servers, s->manager->dns_servers, s);
84 else if (s->type == DNS_SERVER_FALLBACK)
85 LIST_REMOVE(servers, s->manager->fallback_dns_servers, s);
87 assert_not_reached("Unknown server type");
90 if (s->link && s->link->current_dns_server == s)
91 link_set_dns_server(s->link, NULL);
93 if (s->manager && s->manager->current_dns_server == s)
94 manager_set_dns_server(s->manager, NULL);