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_data(sd_journal *j, const char *field, const void **data, size_t *l);
53 int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *l);
54 void sd_journal_start_data(sd_journal *j);
56 int sd_journal_add_match(sd_journal *j, const void *data, size_t size);
57 void sd_journal_flush_matches(sd_journal *j);
59 int sd_journal_seek_head(sd_journal *j);
60 int sd_journal_seek_tail(sd_journal *j);
62 int sd_journal_seek_monotonic_usec(sd_journal *j, uint64_t usec); /* missing */
63 int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec); /* missing */
65 int sd_journal_get_cursor(sd_journal *j, char **cursor);
66 int sd_journal_set_cursor(sd_journal *j, const char *cursor); /* missing */
68 int sd_journal_unique_seek(sd_journal *j, const char *field); /* missing */
69 int sd_journal_unique_enumerate(sd_journal *j, const void **data, size_t *l); /* missing */
71 int sd_journal_get_fd(sd_journal *j); /* missing */
79 int sd_journal_process(sd_journal *j); /* missing */
81 #define SD_JOURNAL_FOREACH_BEGIN(j) \
82 if (sd_journal_seek_head(j) > 0) do {
84 #define SD_JOURNAL_FOREACH_END(j) \
85 } while (sd_journal_next(j) > 0)
87 #define SD_JOURNAL_FOREACH_CONTINUE(j) \
90 #define SD_JOURNAL_FOREACH_BACKWARDS_BEGIN(j) \
91 if (sd_journal_seek_tail(j) > 0) do {
93 #define SD_JOURNAL_FOREACH_BACKWARDS_END(j) \
94 } while (sd_journal_previous(j) > 0)
96 #define SD_JOURNAL_FOREACH_BACKWARDS_CONTINUE(j) \
99 #define SD_JOURNAL_FOREACH_DATA(j, data, l) \
100 for (sd_journal_start_data(j); sd_journal_enumerate_data((j), &(data), &(l)) > 0; )
102 #define SD_JOURNAL_FOREACH_UNIQUE(j, data, l) \
103 while (sd_journal_enumerate_unique_data((j), &(data), &(l)) > 0)