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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
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 <fcntl.h>
#include <errno.h>
#include <stddef.h>
#include "journal-file.h"
static int system_journal_open(JournalFile **f) {
int r;
char *fn;
sd_id128_t machine;
char ids[33];
assert(f);
r = sd_id128_get_machine(&machine);
if (r < 0)
return r;
fn = join("/var/log/journal/", sd_id128_to_string(machine, ids), "/system.journal", NULL);
if (!fn)
return -ENOMEM;
r = journal_file_open(fn, O_RDONLY, 0640, NULL, f);
free(fn);
if (r >= 0)
return r;
if (r < 0 && r != -ENOENT) {
log_error("Failed to open system journal: %s", strerror(-r));
return r;
}
fn = join("/run/log/journal/", ids, "/system.journal", NULL);
if (!fn)
return -ENOMEM;
r = journal_file_open(fn, O_RDONLY, 0640, NULL, f);
free(fn);
if (r < 0) {
log_error("Failed to open system journal: %s", strerror(-r));
return r;
}
return r;
}
int main(int argc, char *argv[]) {
int r;
JournalFile *f;
Object *o = NULL;
log_parse_environment();
log_open();
r = system_journal_open(&f);
if (r < 0) {
log_error("Failed to open journal: %s", strerror(-r));
return EXIT_FAILURE;
}
for (;;) {
uint64_t offset;
uint64_t n, i;
r = journal_file_next_entry(f, o, &o, &offset);
if (r < 0) {
log_error("Failed to read journal: %s", strerror(-r));
goto finish;
}
if (r == 0)
break;
printf("entry: %llu\n", (unsigned long long) le64toh(o->entry.seqnum));
n = journal_file_entry_n_items(o);
for (i = 0; i < n; i++) {
uint64_t p, l;
p = le64toh(o->entry.items[i].object_offset);
r = journal_file_move_to_object(f, p, OBJECT_DATA, &o);
if (r < 0) {
log_error("Failed to move to data: %s", strerror(-r));
goto finish;
}
l = o->object.size - offsetof(Object, data.payload);
printf("\t[%.*s]\n", (int) l, o->data.payload);
r = journal_file_move_to_object(f, offset, OBJECT_ENTRY, &o);
if (r < 0) {
log_error("Failed to move back to entry: %s", strerror(-r));
goto finish;
}
}
}
finish:
journal_file_close(f);
return 0;
}
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