1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
7 This file is part of systemd.
9 Copyright 2011 Lennart Poettering
11 systemd is free software; you can redistribute it and/or modify it
12 under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 systemd is distributed in the hope that it will be useful, but
17 WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include <sys/types.h>
30 * - check LE/BE conversion for 8bit, 16bit, 32bit values
31 * - implement parallel traversal
32 * - implement inotify usage on client
33 * - implement audit gateway
34 * - implement native gateway
35 * - implement stdout gateway
36 * - extend hash table/bisect table as we go
37 * - accelerate looking for "all hostnames" and suchlike.
39 * - enforce limit on open journal files in journald and journalctl
42 typedef struct sd_journal sd_journal;
44 int sd_journal_open(sd_journal **ret);
45 void sd_journal_close(sd_journal *j);
47 int sd_journal_previous(sd_journal *j);
48 int sd_journal_next(sd_journal *j);
50 int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret);
51 int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret);
52 int sd_journal_get_field(sd_journal *j, const char *field, const void **data, size_t *l);
53 int sd_journal_iterate_fields(sd_journal *j, const void **data, size_t *l);
55 int sd_journal_add_match(sd_journal *j, const void *data, size_t size);
56 void sd_journal_flush_matches(sd_journal *j);
58 int sd_journal_seek_head(sd_journal *j);
59 int sd_journal_seek_tail(sd_journal *j);
61 int sd_journal_seek_monotonic_usec(sd_journal *j, uint64_t usec);
62 int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec);
64 int sd_journal_get_cursor(sd_journal *j, char **cursor);
65 int sd_journal_set_cursor(sd_journal *j, const char *cursor);
67 int sd_journal_get_fd(sd_journal *j);
75 int sd_journal_process(sd_journal *j);
77 #define SD_JOURNAL_FOREACH(j) \
78 while (sd_journal_next(j) > 0)
80 #define SD_JOURNAL_FOREACH_BACKWARDS(j) \
81 while (sd_journal_previous(j) > 0)
83 #define SD_JOURNAL_FOREACH_FIELD(j, data, l) \
84 while (sd_journal_iterate_fields((j), &(data), &(l)) > 0)