77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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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 "resolved-dns-answer.h"
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DnsAnswer *dns_answer_new(unsigned n) {
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DnsAnswer *a;
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assert(n > 0);
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a = malloc0(offsetof(DnsAnswer, rrs) + sizeof(DnsResourceRecord*) * n);
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if (!a)
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return NULL;
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a->n_ref = 1;
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a->n_allocated = n;
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return a;
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}
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DnsAnswer *dns_answer_ref(DnsAnswer *a) {
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if (!a)
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return NULL;
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assert(a->n_ref > 0);
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a->n_ref++;
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return a;
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}
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DnsAnswer *dns_answer_unref(DnsAnswer *a) {
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if (!a)
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return NULL;
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assert(a->n_ref > 0);
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if (a->n_ref == 1) {
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unsigned i;
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for (i = 0; i < a->n_rrs; i++)
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dns_resource_record_unref(a->rrs[i]);
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free(a);
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} else
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a->n_ref--;
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return NULL;
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}
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int dns_answer_add(DnsAnswer *a, DnsResourceRecord *rr) {
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assert(a);
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assert(rr);
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if (a->n_rrs >= a->n_allocated)
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return -ENOSPC;
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a->rrs[a->n_rrs++] = dns_resource_record_ref(rr);
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return 0;
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}
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