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53e1b683 1/* SPDX-License-Identifier: LGPL-2.1+ */
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2/***
3 This file is part of systemd.
4
5 Copyright 2012 Lennart Poettering
6
7 systemd is free software; you can redistribute it and/or modify it
8 under the terms of the GNU Lesser General Public License as published by
9 the Free Software Foundation; either version 2.1 of the License, or
10 (at your option) any later version.
11
12 systemd is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
16
17 You should have received a copy of the GNU Lesser General Public License
18 along with systemd; If not, see <http://www.gnu.org/licenses/>.
19***/
20
21#include <stdio.h>
22
a4bcff5b 23#include "sd-journal.h"
07630cea 24
cf0fbc49 25#include "journal-internal.h"
07630cea 26#include "log.h"
763c7aa2 27#include "macro.h"
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28
29int main(int argc, char *argv[]) {
30 unsigned n = 0;
4afd3348 31 _cleanup_(sd_journal_closep) sd_journal*j = NULL;
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32
33 log_set_max_level(LOG_DEBUG);
34
35 assert_se(sd_journal_open(&j, SD_JOURNAL_LOCAL_ONLY) >= 0);
36
37 assert_se(sd_journal_add_match(j, "_TRANSPORT=syslog", 0) >= 0);
38 assert_se(sd_journal_add_match(j, "_UID=0", 0) >= 0);
39
40 SD_JOURNAL_FOREACH_BACKWARDS(j) {
41 const void *d;
42 size_t l;
43
44 assert_se(sd_journal_get_data(j, "MESSAGE", &d, &l) >= 0);
45
46 printf("%.*s\n", (int) l, (char*) d);
47
313cefa1 48 n++;
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49 if (n >= 10)
50 break;
51 }
52
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53 return 0;
54}