sd-journal.h revision 8f9b6cd9eb049b00b1e9e669d0e35aa415dc8fb0
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
#ifndef foojournalhfoo
#define foojournalhfoo
/***
This file is part of systemd.
Copyright 2011 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <inttypes.h>
#include <sys/types.h>
/* TODO:
*
* - check LE/BE conversion for 8bit, 16bit, 32bit values
* - implement parallel traversal
* - implement inotify usage on client
* - implement audit gateway
* - implement native gateway
* - implement stdout gateway
* - extend hash table/bisect table as we go
* - accelerate looking for "all hostnames" and suchlike.
* - throttling
* - enforce limit on open journal files in journald and journalctl
*/
typedef struct sd_journal sd_journal;
int sd_journal_open(sd_journal **ret);
void sd_journal_close(sd_journal *j);
int sd_journal_previous(sd_journal *j);
int sd_journal_next(sd_journal *j);
int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret);
int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret);
int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *l);
int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *l);
void sd_journal_start_data(sd_journal *j);
int sd_journal_add_match(sd_journal *j, const void *data, size_t size);
void sd_journal_flush_matches(sd_journal *j);
int sd_journal_seek_head(sd_journal *j);
int sd_journal_seek_tail(sd_journal *j);
int sd_journal_seek_monotonic_usec(sd_journal *j, uint64_t usec); /* missing */
int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec); /* missing */
int sd_journal_get_cursor(sd_journal *j, char **cursor);
int sd_journal_set_cursor(sd_journal *j, const char *cursor); /* missing */
int sd_journal_unique_seek(sd_journal *j, const char *field); /* missing */
int sd_journal_unique_enumerate(sd_journal *j, const void **data, size_t *l); /* missing */
int sd_journal_get_fd(sd_journal *j); /* missing */
enum {
SD_JOURNAL_NOP,
SD_JOURNAL_APPEND,
SD_JOURNAL_DROP
};
int sd_journal_process(sd_journal *j); /* missing */
#define SD_JOURNAL_FOREACH_BEGIN(j) \
if (sd_journal_seek_head(j) > 0) do {
#define SD_JOURNAL_FOREACH_END(j) \
} while (sd_journal_next(j) > 0)
#define SD_JOURNAL_FOREACH_CONTINUE(j) \
do {
#define SD_JOURNAL_FOREACH_BACKWARDS_BEGIN(j) \
if (sd_journal_seek_tail(j) > 0) do {
#define SD_JOURNAL_FOREACH_BACKWARDS_END(j) \
} while (sd_journal_previous(j) > 0)
#define SD_JOURNAL_FOREACH_BACKWARDS_CONTINUE(j) \
do {
#define SD_JOURNAL_FOREACH_DATA(j, data, l) \
for (sd_journal_start_data(j); sd_journal_enumerate_data((j), &(data), &(l)) > 0; )
#define SD_JOURNAL_FOREACH_UNIQUE(j, data, l) \
while (sd_journal_enumerate_unique_data((j), &(data), &(l)) > 0)
#endif