53e1b68390
This follows what the kernel is doing, c.f. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5fd54ace4721fc5ce2bb5aef6318fcf17f421460.
53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/***
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This file is part of systemd
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Copyright 2017 Zbigniew Jędrzejewski-Szmek
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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 "log.h"
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#include "resolved-dns-packet.h"
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static void test_dns_packet_new(void) {
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size_t i;
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_cleanup_(dns_packet_unrefp) DnsPacket *p2 = NULL;
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for (i = 0; i <= DNS_PACKET_SIZE_MAX; i++) {
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_cleanup_(dns_packet_unrefp) DnsPacket *p = NULL;
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assert_se(dns_packet_new(&p, DNS_PROTOCOL_DNS, i, DNS_PACKET_SIZE_MAX) == 0);
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log_debug("dns_packet_new: %zu → %zu", i, p->allocated);
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assert_se(p->allocated >= MIN(DNS_PACKET_SIZE_MAX, i));
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if (i > DNS_PACKET_SIZE_START + 10 && i < DNS_PACKET_SIZE_MAX - 10)
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i = MIN(i * 2, DNS_PACKET_SIZE_MAX - 10);
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}
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assert_se(dns_packet_new(&p2, DNS_PROTOCOL_DNS, DNS_PACKET_SIZE_MAX + 1, DNS_PACKET_SIZE_MAX) == -EFBIG);
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}
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int main(int argc, char **argv) {
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log_set_max_level(LOG_DEBUG);
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log_parse_environment();
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log_open();
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test_dns_packet_new();
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return 0;
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}
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