128 lines
4.1 KiB
C
128 lines
4.1 KiB
C
/***
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This file is part of systemd.
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Copyright 2011 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <unistd.h>
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#include "sd-daemon.h"
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#include "sd-messages.h"
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#include "format-util.h"
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#include "journal-authenticate.h"
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#include "journald-kmsg.h"
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#include "journald-server.h"
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#include "journald-syslog.h"
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#include "sigbus.h"
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int main(int argc, char *argv[]) {
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Server server;
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int r;
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if (argc > 1) {
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log_error("This program does not take arguments.");
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return EXIT_FAILURE;
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}
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log_set_target(LOG_TARGET_SAFE);
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log_set_facility(LOG_SYSLOG);
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log_parse_environment();
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log_open();
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umask(0022);
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sigbus_install();
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r = server_init(&server);
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if (r < 0)
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goto finish;
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server_vacuum(&server, false);
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server_flush_to_var(&server, true);
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server_flush_dev_kmsg(&server);
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log_debug("systemd-journald running as pid "PID_FMT, getpid_cached());
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server_driver_message(&server,
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"MESSAGE_ID=" SD_MESSAGE_JOURNAL_START_STR,
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LOG_MESSAGE("Journal started"),
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NULL);
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/* Make sure to send the usage message *after* flushing the
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* journal so entries from the runtime journals are ordered
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* before this message. See #4190 for some details. */
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server_space_usage_message(&server, NULL);
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for (;;) {
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usec_t t = USEC_INFINITY, n;
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r = sd_event_get_state(server.event);
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if (r < 0)
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goto finish;
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if (r == SD_EVENT_FINISHED)
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break;
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n = now(CLOCK_REALTIME);
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if (server.max_retention_usec > 0 && server.oldest_file_usec > 0) {
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/* The retention time is reached, so let's vacuum! */
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if (server.oldest_file_usec + server.max_retention_usec < n) {
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log_info("Retention time reached.");
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server_rotate(&server);
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server_vacuum(&server, false);
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continue;
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}
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/* Calculate when to rotate the next time */
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t = server.oldest_file_usec + server.max_retention_usec - n;
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}
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#if HAVE_GCRYPT
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if (server.system_journal) {
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usec_t u;
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if (journal_file_next_evolve_usec(server.system_journal, &u)) {
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if (n >= u)
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t = 0;
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else
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t = MIN(t, u - n);
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}
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}
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#endif
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r = sd_event_run(server.event, t);
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if (r < 0) {
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log_error_errno(r, "Failed to run event loop: %m");
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goto finish;
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}
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server_maybe_append_tags(&server);
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server_maybe_warn_forward_syslog_missed(&server);
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}
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log_debug("systemd-journald stopped as pid "PID_FMT, getpid_cached());
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server_driver_message(&server,
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"MESSAGE_ID=" SD_MESSAGE_JOURNAL_STOP_STR,
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LOG_MESSAGE("Journal stopped"),
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NULL);
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finish:
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server_done(&server);
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return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
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}
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