diff options
Diffstat (limited to 'src/timesync/timesyncd.c')
| -rw-r--r-- | src/timesync/timesyncd.c | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/src/timesync/timesyncd.c b/src/timesync/timesyncd.c deleted file mode 100644 index 735668bede..0000000000 --- a/src/timesync/timesyncd.c +++ /dev/null @@ -1,166 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2014 Kay Sievers, 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 "sd-event.h" -#include "sd-daemon.h" -#include "capability.h" -#include "clock-util.h" -#include "network-util.h" - -#include "timesyncd-manager.h" -#include "timesyncd-conf.h" - -static int load_clock_timestamp(uid_t uid, gid_t gid) { - _cleanup_close_ int fd = -1; - usec_t min = TIME_EPOCH * USEC_PER_SEC; - usec_t ct; - int r; - - /* Let's try to make sure that the clock is always - * monotonically increasing, by saving the clock whenever we - * have a new NTP time, or when we shut down, and restoring it - * when we start again. This is particularly helpful on - * systems lacking a battery backed RTC. We also will adjust - * the time to at least the build time of systemd. */ - - fd = open("/var/lib/systemd/clock", O_RDWR|O_CLOEXEC, 0644); - if (fd >= 0) { - struct stat st; - usec_t stamp; - - /* check if the recorded time is later than the compiled-in one */ - r = fstat(fd, &st); - if (r >= 0) { - stamp = timespec_load(&st.st_mtim); - if (stamp > min) - min = stamp; - } - - /* Try to fix the access mode, so that we can still - touch the file after dropping priviliges */ - fchmod(fd, 0644); - fchown(fd, uid, gid); - - } else - /* create stamp file with the compiled-in date */ - touch_file("/var/lib/systemd/clock", true, min, uid, gid, 0644); - - ct = now(CLOCK_REALTIME); - if (ct < min) { - struct timespec ts; - char date[FORMAT_TIMESTAMP_MAX]; - - log_info("System clock time unset or jumped backwards, restoring from recorded timestamp: %s", - format_timestamp(date, sizeof(date), min)); - - if (clock_settime(CLOCK_REALTIME, timespec_store(&ts, min)) < 0) - log_error_errno(errno, "Failed to restore system clock: %m"); - } - - return 0; -} - -int main(int argc, char *argv[]) { - _cleanup_(manager_freep) Manager *m = NULL; - const char *user = "systemd-timesync"; - uid_t uid; - gid_t gid; - int r; - - log_set_target(LOG_TARGET_AUTO); - log_set_facility(LOG_CRON); - log_parse_environment(); - log_open(); - - umask(0022); - - if (argc != 1) { - log_error("This program does not take arguments."); - r = -EINVAL; - goto finish; - } - - r = get_user_creds(&user, &uid, &gid, NULL, NULL); - if (r < 0) { - log_error_errno(r, "Cannot resolve user name %s: %m", user); - goto finish; - } - - r = load_clock_timestamp(uid, gid); - if (r < 0) - goto finish; - - r = drop_privileges(uid, gid, (1ULL << CAP_SYS_TIME)); - if (r < 0) - goto finish; - - /* We need one process for ourselves, plus one thread for the asynchronous resolver */ - if (setrlimit(RLIMIT_NPROC, &RLIMIT_MAKE_CONST(2)) < 0) - log_warning_errno(errno, "Failed to lower RLIMIT_NPROC to 2: %m"); - - assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1) == 0); - - r = manager_new(&m); - if (r < 0) { - log_error_errno(r, "Failed to allocate manager: %m"); - goto finish; - } - - if (clock_is_localtime() > 0) { - log_info("The system is configured to read the RTC time in the local time zone. " - "This mode can not be fully supported. All system time to RTC updates are disabled."); - m->rtc_local_time = true; - } - - r = manager_parse_config_file(m); - if (r < 0) - log_warning_errno(r, "Failed to parse configuration file: %m"); - - log_debug("systemd-timesyncd running as pid %lu", (unsigned long) getpid()); - sd_notify(false, - "READY=1\n" - "STATUS=Daemon is running"); - - if (network_is_online()) { - r = manager_connect(m); - if (r < 0) - goto finish; - } - - r = sd_event_loop(m->event); - if (r < 0) { - log_error_errno(r, "Failed to run event loop: %m"); - goto finish; - } - - /* if we got an authoritative time, store it in the file system */ - if (m->sync) - touch("/var/lib/systemd/clock"); - - sd_event_get_exit_code(m->event, &r); - -finish: - sd_notify(false, - "STOPPING=1\n" - "STATUS=Shutting down..."); - - return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; -} |