src/journal/test-journal-enum.c

   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 }