53e1b68390
This follows what the kernel is doing, c.f. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5fd54ace4721fc5ce2bb5aef6318fcf17f421460.
119 lines
3.2 KiB
C
119 lines
3.2 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2014 Kay Sievers, 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 "sd-event.h"
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#include "sd-network.h"
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#include "sd-resolve.h"
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#include "list.h"
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#include "ratelimit.h"
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#include "time-util.h"
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typedef struct Manager Manager;
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#include "timesyncd-server.h"
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/*
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* "A client MUST NOT under any conditions use a poll interval less
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* than 15 seconds."
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*/
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#define NTP_POLL_INTERVAL_MIN_USEC (32 * USEC_PER_SEC)
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#define NTP_POLL_INTERVAL_MAX_USEC (2048 * USEC_PER_SEC)
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struct Manager {
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sd_event *event;
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sd_resolve *resolve;
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LIST_HEAD(ServerName, system_servers);
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LIST_HEAD(ServerName, link_servers);
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LIST_HEAD(ServerName, fallback_servers);
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bool have_fallbacks:1;
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RateLimit ratelimit;
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bool exhausted_servers;
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/* network */
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sd_event_source *network_event_source;
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sd_network_monitor *network_monitor;
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/* peer */
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sd_resolve_query *resolve_query;
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sd_event_source *event_receive;
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ServerName *current_server_name;
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ServerAddress *current_server_address;
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int server_socket;
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int missed_replies;
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uint64_t packet_count;
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sd_event_source *event_timeout;
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bool good;
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/* last sent packet */
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struct timespec trans_time_mon;
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struct timespec trans_time;
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usec_t retry_interval;
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bool pending;
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/* poll timer */
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sd_event_source *event_timer;
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usec_t poll_interval_usec;
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usec_t poll_interval_min_usec;
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usec_t poll_interval_max_usec;
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bool poll_resync;
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/* history data */
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struct {
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double offset;
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double delay;
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} samples[8];
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unsigned int samples_idx;
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double samples_jitter;
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usec_t max_root_distance_usec;
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/* last change */
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bool jumped;
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bool sync;
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int drift_ppm;
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/* watch for time changes */
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sd_event_source *event_clock_watch;
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int clock_watch_fd;
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/* Retry connections */
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sd_event_source *event_retry;
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/* RTC runs in local time, leave it alone */
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bool rtc_local_time;
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};
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int manager_new(Manager **ret);
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void manager_free(Manager *m);
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DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
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void manager_set_server_name(Manager *m, ServerName *n);
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void manager_set_server_address(Manager *m, ServerAddress *a);
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void manager_flush_server_names(Manager *m, ServerType t);
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int manager_connect(Manager *m);
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void manager_disconnect(Manager *m);
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