1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2011 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
22 #include <sys/epoll.h>
23 #include <sys/socket.h>
27 #include <systemd/sd-journal.h>
28 #include <systemd/sd-messages.h>
29 #include <systemd/sd-daemon.h>
31 #include "journal-authenticate.h"
32 #include "journald-server.h"
33 #include "journald-kmsg.h"
34 #include "journald-syslog.h"
36 int main(int argc, char *argv[]) {
40 /* if (getppid() != 1) { */
41 /* log_error("This program should be invoked by init only."); */
42 /* return EXIT_FAILURE; */
46 log_error("This program does not take arguments.");
50 log_set_target(LOG_TARGET_SAFE);
51 log_set_facility(LOG_SYSLOG);
52 log_parse_environment();
57 r = server_init(&server);
61 server_vacuum(&server);
62 server_flush_to_var(&server);
63 server_flush_dev_kmsg(&server);
65 log_debug("systemd-journald running as pid %lu", (unsigned long) getpid());
66 server_driver_message(&server, SD_MESSAGE_JOURNAL_START, "Journal started");
70 "STATUS=Processing requests...");
73 struct epoll_event event;
77 n = now(CLOCK_REALTIME);
79 if (server.max_retention_usec > 0 && server.oldest_file_usec > 0) {
81 /* The retention time is reached, so let's vacuum! */
82 if (server.oldest_file_usec + server.max_retention_usec < n) {
83 log_info("Retention time reached.");
84 server_rotate(&server);
85 server_vacuum(&server);
89 /* Calculate when to rotate the next time */
90 t = (int) ((server.oldest_file_usec + server.max_retention_usec - n + USEC_PER_MSEC - 1) / USEC_PER_MSEC);
94 if (server.system_journal) {
97 if (journal_file_next_evolve_usec(server.system_journal, &u)) {
101 t = MIN(t, (int) ((u - n + USEC_PER_MSEC - 1) / USEC_PER_MSEC));
106 r = epoll_wait(server.epoll_fd, &event, 1, t);
112 log_error("epoll_wait() failed: %m");
118 r = process_event(&server, &event);
125 server_maybe_append_tags(&server);
126 server_maybe_warn_forward_syslog_missed(&server);
129 log_debug("systemd-journald stopped as pid %lu", (unsigned long) getpid());
130 server_driver_message(&server, SD_MESSAGE_JOURNAL_STOP, "Journal stopped");
134 "STATUS=Shutting down...");
136 server_done(&server);
138 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;