141 lines
4.5 KiB
C
141 lines
4.5 KiB
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 Lesser General Public License as published by
|
|
the Free Software Foundation; either version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with systemd; If not, see <http://www.gnu.org/licenses/>.
|
|
***/
|
|
|
|
#include <sys/epoll.h>
|
|
#include <sys/socket.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
|
|
#include <systemd/sd-journal.h>
|
|
#include <systemd/sd-messages.h>
|
|
#include <systemd/sd-daemon.h>
|
|
|
|
#include "journal-authenticate.h"
|
|
#include "journald-server.h"
|
|
#include "journald-kmsg.h"
|
|
#include "journald-syslog.h"
|
|
|
|
int main(int argc, char *argv[]) {
|
|
Server server;
|
|
int r;
|
|
|
|
/* if (getppid() != 1) { */
|
|
/* log_error("This program should be invoked by init only."); */
|
|
/* return EXIT_FAILURE; */
|
|
/* } */
|
|
|
|
if (argc > 1) {
|
|
log_error("This program does not take arguments.");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
log_set_target(LOG_TARGET_SAFE);
|
|
log_set_facility(LOG_SYSLOG);
|
|
log_parse_environment();
|
|
log_open();
|
|
|
|
umask(0022);
|
|
|
|
r = server_init(&server);
|
|
if (r < 0)
|
|
goto finish;
|
|
|
|
server_vacuum(&server);
|
|
server_flush_to_var(&server);
|
|
server_flush_dev_kmsg(&server);
|
|
|
|
log_debug("systemd-journald running as pid %lu", (unsigned long) getpid());
|
|
server_driver_message(&server, SD_MESSAGE_JOURNAL_START, "Journal started");
|
|
|
|
sd_notify(false,
|
|
"READY=1\n"
|
|
"STATUS=Processing requests...");
|
|
|
|
for (;;) {
|
|
struct epoll_event event;
|
|
int t = -1;
|
|
usec_t n;
|
|
|
|
n = now(CLOCK_REALTIME);
|
|
|
|
if (server.max_retention_usec > 0 && server.oldest_file_usec > 0) {
|
|
|
|
/* The retention time is reached, so let's vacuum! */
|
|
if (server.oldest_file_usec + server.max_retention_usec < n) {
|
|
log_info("Retention time reached.");
|
|
server_rotate(&server);
|
|
server_vacuum(&server);
|
|
continue;
|
|
}
|
|
|
|
/* Calculate when to rotate the next time */
|
|
t = (int) ((server.oldest_file_usec + server.max_retention_usec - n + USEC_PER_MSEC - 1) / USEC_PER_MSEC);
|
|
log_info("Sleeping for %i ms", t);
|
|
}
|
|
|
|
#ifdef HAVE_GCRYPT
|
|
if (server.system_journal) {
|
|
usec_t u;
|
|
|
|
if (journal_file_next_evolve_usec(server.system_journal, &u)) {
|
|
if (n >= u)
|
|
t = 0;
|
|
else
|
|
t = MIN(t, (int) ((u - n + USEC_PER_MSEC - 1) / USEC_PER_MSEC));
|
|
}
|
|
}
|
|
#endif
|
|
|
|
r = epoll_wait(server.epoll_fd, &event, 1, t);
|
|
if (r < 0) {
|
|
|
|
if (errno == EINTR)
|
|
continue;
|
|
|
|
log_error("epoll_wait() failed: %m");
|
|
r = -errno;
|
|
goto finish;
|
|
}
|
|
|
|
if (r > 0) {
|
|
r = process_event(&server, &event);
|
|
if (r < 0)
|
|
goto finish;
|
|
else if (r == 0)
|
|
break;
|
|
}
|
|
|
|
server_maybe_append_tags(&server);
|
|
server_maybe_warn_forward_syslog_missed(&server);
|
|
}
|
|
|
|
log_debug("systemd-journald stopped as pid %lu", (unsigned long) getpid());
|
|
server_driver_message(&server, SD_MESSAGE_JOURNAL_STOP, "Journal stopped");
|
|
|
|
finish:
|
|
sd_notify(false,
|
|
"STATUS=Shutting down...");
|
|
|
|
server_done(&server);
|
|
|
|
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
|
|
}
|