journal: fix field retrieval by name

[thirdparty/systemd.git] / src / journal / journalctl.c

/*-*- 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 <string.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>

#include "sd-journal.h"
#include "log.h"

int main(int argc, char *argv[]) {
        int r;
        sd_journal *j = NULL;

        log_set_max_level(LOG_DEBUG);
        log_set_target(LOG_TARGET_CONSOLE);

        log_parse_environment();
        log_open();

        r = sd_journal_open(&j);
        if (r < 0) {
                log_error("Failed to open journal: %s", strerror(-r));
                goto finish;
        }

        SD_JOURNAL_FOREACH(j) {
                const void *data;
                size_t length;
                char *cursor;

                r = sd_journal_get_cursor(j, &cursor);
                if (r < 0) {
                        log_error("Failed to get cursor: %s", strerror(-r));
                        goto finish;
                }

                printf("entry: %s\n", cursor);
                free(cursor);

                SD_JOURNAL_FOREACH_FIELD(j, data, length)
                        printf("\t%.*s\n", (int) length, (const char*) data);
        }

finish:
        if (j)
                sd_journal_close(j);

        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}