src/journal/test-journal-enum.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   Copyright 2012 Lennart Poettering
   4 ***/
   5
   6 #include <stdio.h>
   7
   8 #include "sd-journal.h"
   9
  10 #include "journal-internal.h"
  11 #include "log.h"
  12 #include "macro.h"
  13
  14 int main(int argc, char *argv[]) {
  15         unsigned n = 0;
  16         _cleanup_(sd_journal_closep) sd_journal*j = NULL;
  17
  18         log_set_max_level(LOG_DEBUG);
  19
  20         assert_se(sd_journal_open(&j, SD_JOURNAL_LOCAL_ONLY) >= 0);
  21
  22         assert_se(sd_journal_add_match(j, "_TRANSPORT=syslog", 0) >= 0);
  23         assert_se(sd_journal_add_match(j, "_UID=0", 0) >= 0);
  24
  25         SD_JOURNAL_FOREACH_BACKWARDS(j) {
  26                 const void *d;
  27                 size_t l;
  28
  29                 assert_se(sd_journal_get_data(j, "MESSAGE", &d, &l) >= 0);
  30
  31                 printf("%.*s\n", (int) l, (char*) d);
  32
  33                 n++;
  34                 if (n >= 10)
  35                         break;
  36         }
  37
  38         return 0;
  39 }