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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ | |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2014 Lennart Poettering | |
7 | ||
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. | |
12 | ||
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. | |
17 | ||
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/>. | |
20 | ***/ | |
21 | ||
22 | #include "resolved-dns-rr.h" | |
23 | ||
24 | void dns_resource_key_free(DnsResourceKey *key) { | |
25 | if (!key) | |
26 | return; | |
27 | ||
28 | free(key->name); | |
29 | zero(*key); | |
30 | } | |
31 | ||
32 | DnsResourceRecord* dns_resource_record_new(void) { | |
33 | DnsResourceRecord *rr; | |
34 | ||
35 | rr = new0(DnsResourceRecord, 1); | |
36 | if (!rr) | |
37 | return NULL; | |
38 | ||
39 | rr->n_ref = 1; | |
40 | return rr; | |
41 | } | |
42 | ||
43 | DnsResourceRecord* dns_resource_record_ref(DnsResourceRecord *rr) { | |
44 | if (!rr) | |
45 | return NULL; | |
46 | ||
47 | assert(rr->n_ref > 0); | |
48 | rr->n_ref++; | |
49 | ||
50 | return rr; | |
51 | } | |
52 | ||
53 | DnsResourceRecord* dns_resource_record_unref(DnsResourceRecord *rr) { | |
54 | if (!rr) | |
55 | return NULL; | |
56 | ||
57 | assert(rr->n_ref > 0); | |
58 | ||
59 | if (rr->n_ref > 1) { | |
60 | rr->n_ref--; | |
61 | return NULL; | |
62 | } | |
63 | ||
64 | if (IN_SET(rr->key.type, DNS_TYPE_PTR, DNS_TYPE_NS, DNS_TYPE_CNAME)) | |
65 | free(rr->ptr.name); | |
66 | else if (rr->key.type == DNS_TYPE_HINFO) { | |
67 | free(rr->hinfo.cpu); | |
68 | free(rr->hinfo.os); | |
69 | } else if (!IN_SET(rr->key.type, DNS_TYPE_A, DNS_TYPE_AAAA)) | |
70 | free(rr->generic.data); | |
71 | ||
72 | dns_resource_key_free(&rr->key); | |
73 | free(rr); | |
74 | ||
75 | return NULL; | |
76 | } |