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