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