#include "mkdir.h"
#include "timesyncd-conf.h"
#include "timesyncd-manager.h"
-
-#define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1)
+#include "time-util.h"
#ifndef ADJ_SETOFFSET
#define ADJ_SETOFFSET 0x0100 /* add 'time' to current time */
/* Maximum acceptable root distance in seconds. */
#define NTP_MAX_ROOT_DISTANCE 5.0
+/* Maximum number of missed replies before selecting another source. */
+#define NTP_MAX_MISSED_REPLIES 2
+
/*
* "NTP timestamps are represented as a 64-bit unsigned fixed-point number,
* in seconds relative to 0h on 1 January 1900."
static int manager_arm_timer(Manager *m, usec_t next);
static int manager_clock_watch_setup(Manager *m);
+static int manager_listen_setup(Manager *m);
static double ntp_ts_short_to_d(const struct ntp_ts_short *ts) {
return be16toh(ts->sec) + (be16toh(ts->frac) / 65536.0);
m->event_timeout = sd_event_source_unref(m->event_timeout);
+ if (m->server_socket < 0) {
+ r = manager_listen_setup(m);
+ if (r < 0) {
+ log_warning_errno(r, "Failed to setup connection socket: %m");
+ return r;
+ }
+ }
+
/*
* Set transmit timestamp, remember it; the server will send that back
* as the origin timestamp and we have an indication that this is the
r = manager_arm_timer(m, m->retry_interval);
if (r < 0) {
- log_error("Failed to rearm timer: %s", strerror(-r));
+ log_error_errno(r, "Failed to rearm timer: %m");
return r;
}
- r = sd_event_add_time(
- m->event,
- &m->event_timeout,
- clock_boottime_or_monotonic(),
- now(clock_boottime_or_monotonic()) + TIMEOUT_USEC, 0,
- manager_timeout, m);
- if (r < 0) {
- log_error("Failed to arm timeout timer: %s", strerror(-r));
- return r;
+ m->missed_replies++;
+ if (m->missed_replies > NTP_MAX_MISSED_REPLIES) {
+ r = sd_event_add_time(
+ m->event,
+ &m->event_timeout,
+ clock_boottime_or_monotonic(),
+ now(clock_boottime_or_monotonic()) + TIMEOUT_USEC, 0,
+ manager_timeout, m);
+ if (r < 0) {
+ log_error_errno(r, "Failed to arm timeout timer: %m");
+ return r;
+ }
}
return 0;
int r;
assert(m);
- assert(m->event_receive);
if (next == 0) {
m->event_timer = sd_event_source_unref(m->event_timer);
r = sd_event_add_io(m->event, &m->event_clock_watch, m->clock_watch_fd, EPOLLIN, manager_clock_watch, m);
if (r < 0) {
- log_error("Failed to create clock watch event source: %s", strerror(-r));
+ log_error_errno(r, "Failed to create clock watch event source: %m");
return r;
}
tmx.constant = log2i(m->poll_interval_usec / USEC_PER_SEC) - 4;
tmx.maxerror = 0;
tmx.esterror = 0;
- log_debug(" adjust (slew): %+.3f sec\n", offset);
+ log_debug(" adjust (slew): %+.3f sec", offset);
} else {
tmx.modes = ADJ_STATUS | ADJ_NANO | ADJ_SETOFFSET;
}
m->jumped = true;
- log_debug(" adjust (jump): %+.3f sec\n", offset);
+ log_debug(" adjust (jump): %+.3f sec", offset);
}
/*
return 0;
}
+ m->missed_replies = 0;
+
/* check our "time cookie" (we just stored nanoseconds in the fraction field) */
if (be32toh(ntpmsg.origin_time.sec) != m->trans_time.tv_sec + OFFSET_1900_1970 ||
be32toh(ntpmsg.origin_time.frac) != m->trans_time.tv_nsec) {
m->pending = false;
m->retry_interval = 0;
+ /* Stop listening */
+ m->event_receive = sd_event_source_unref(m->event_receive);
+ m->server_socket = safe_close(m->server_socket);
+
/* announce leap seconds */
if (NTP_FIELD_LEAP(ntpmsg.field) & NTP_LEAP_PLUSSEC)
leap_sec = 1;
r = manager_arm_timer(m, m->poll_interval_usec);
if (r < 0) {
- log_error("Failed to rearm timer: %s", strerror(-r));
+ log_error_errno(r, "Failed to rearm timer: %m");
return r;
}
if (r < 0)
return -errno;
- setsockopt(m->server_socket, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
+ (void) setsockopt(m->server_socket, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
return sd_event_add_io(m->event, &m->event_receive, m->server_socket, EPOLLIN, manager_receive_response, m);
}
assert_return(m->current_server_name, -EHOSTUNREACH);
assert_return(m->current_server_address, -EHOSTUNREACH);
- m->poll_interval_usec = NTP_POLL_INTERVAL_MIN_SEC * USEC_PER_SEC;
+ m->missed_replies = NTP_MAX_MISSED_REPLIES;
+ if (m->poll_interval_usec == 0)
+ m->poll_interval_usec = NTP_POLL_INTERVAL_MIN_SEC * USEC_PER_SEC;
server_address_pretty(m->current_server_address, &pretty);
log_info("Using NTP server %s (%s).", strna(pretty), m->current_server_name->string);
sd_notifyf(false, "STATUS=Using Time Server %s (%s).", strna(pretty), m->current_server_name->string);
- r = manager_listen_setup(m);
- if (r < 0) {
- log_warning("Failed to setup connection socket: %s", strerror(-r));
- return r;
- }
-
r = manager_clock_watch_setup(m);
if (r < 0)
return r;
if (m->current_server_address == a)
return;
- m->current_server_name = a ? a->name : NULL;
m->current_server_address = a;
+ /* If a is NULL, we are just clearing the address, without
+ * changing the name. Keep the existing name in that case. */
+ if (a)
+ m->current_server_name = a->name;
manager_disconnect(m);
r = server_address_new(m->current_server_name, &a, (const union sockaddr_union*) ai->ai_addr, ai->ai_addrlen);
if (r < 0) {
- log_error("Failed to add server address: %s", strerror(-r));
+ log_error_errno(r, "Failed to add server address: %m");
return r;
}
r = sd_event_add_time(m->event, &m->event_retry, clock_boottime_or_monotonic(), now(clock_boottime_or_monotonic()) + RETRY_USEC, 0, manager_retry_connect, m);
if (r < 0) {
- log_error("Failed to create retry timer: %s", strerror(-r));
+ log_error_errno(r, "Failed to create retry timer: %m");
return r;
}
manager_set_server_name(m, m->current_server_name->names_next);
else {
ServerName *f;
+ bool restart = true;
/* Our current server name list is exhausted,
* let's find the next one to iterate. First
f = m->link_servers;
if (!f)
f = m->system_servers;
+ else
+ restart = false;
}
if (!f)
return 0;
}
+ if (restart && !m->exhausted_servers && m->poll_interval_usec) {
+ log_debug("Waiting after exhausting servers.");
+ r = sd_event_add_time(m->event, &m->event_retry, clock_boottime_or_monotonic(), now(clock_boottime_or_monotonic()) + m->poll_interval_usec, 0, manager_retry_connect, m);
+ if (r < 0) {
+ log_error_errno(r, "Failed to create retry timer: %m");
+ return r;
+ }
+
+ m->exhausted_servers = true;
+
+ /* Increase the polling interval */
+ if (m->poll_interval_usec < NTP_POLL_INTERVAL_MAX_SEC * USEC_PER_SEC)
+ m->poll_interval_usec *= 2;
+
+ return 0;
+ }
+
+ m->exhausted_servers = false;
+
manager_set_server_name(m, f);
}
r = sd_resolve_getaddrinfo(m->resolve, &m->resolve_query, m->current_server_name->string, "123", &hints, manager_resolve_handler, m);
if (r < 0) {
- log_error("Failed to create resolver: %s", strerror(-r));
+ log_error_errno(r, "Failed to create resolver: %m");
return r;
}
online = network_is_online();
/* check if the client is currently connected */
- connected = m->server_socket >= 0 || m->resolve_query;
+ connected = m->server_socket >= 0 || m->resolve_query || m->exhausted_servers;
if (connected && !online) {
log_info("No network connectivity, watching for changes.");
~ianmdlvl / elogind.git / blobdiff