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systemd/src/timedate/timedatectl.c

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/* SPDX-License-Identifier: LGPL-2.1+ */
#include <getopt.h>
#include <locale.h>
#include <math.h>
#include <stdbool.h>
#include <stdlib.h>
#include "sd-bus.h"
#include "bus-error.h"
#include "bus-util.h"
#include "in-addr-util.h"
#include "main-func.h"
#include "pager.h"
#include "parse-util.h"
#include "pretty-print.h"
#include "spawn-polkit-agent.h"
#include "sparse-endian.h"
#include "string-table.h"
#include "strv.h"
#include "terminal-util.h"
#include "util.h"
#include "verbs.h"
static PagerFlags arg_pager_flags = 0;
static bool arg_ask_password = true;
static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
static char *arg_host = NULL;
static bool arg_adjust_system_clock = false;
static bool arg_monitor = false;
static char **arg_property = NULL;
static bool arg_value = false;
static bool arg_all = false;
typedef struct StatusInfo {
usec_t time;
const char *timezone;
usec_t rtc_time;
bool rtc_local;
bool ntp_capable;
bool ntp_active;
bool ntp_synced;
} StatusInfo;
static void print_status_info(const StatusInfo *i) {
const char *old_tz = NULL, *tz;
bool have_time = false;
char a[LINE_MAX];
struct tm tm;
time_t sec;
size_t n;
int r;
assert(i);
/* Save the old $TZ */
tz = getenv("TZ");
if (tz)
old_tz = strdupa(tz);
/* Set the new $TZ */
if (setenv("TZ", isempty(i->timezone) ? "UTC" : i->timezone, true) < 0)
log_warning_errno(errno, "Failed to set TZ environment variable, ignoring: %m");
else
tzset();
if (i->time != 0) {
sec = (time_t) (i->time / USEC_PER_SEC);
have_time = true;
} else if (IN_SET(arg_transport, BUS_TRANSPORT_LOCAL, BUS_TRANSPORT_MACHINE)) {
sec = time(NULL);
have_time = true;
} else
log_warning("Could not get time from timedated and not operating locally, ignoring.");
if (have_time) {
n = strftime(a, sizeof a, "%a %Y-%m-%d %H:%M:%S %Z", localtime_r(&sec, &tm));
printf(" Local time: %s\n", n > 0 ? a : "n/a");
n = strftime(a, sizeof a, "%a %Y-%m-%d %H:%M:%S UTC", gmtime_r(&sec, &tm));
printf(" Universal time: %s\n", n > 0 ? a : "n/a");
} else {
printf(" Local time: %s\n", "n/a");
printf(" Universal time: %s\n", "n/a");
}
if (i->rtc_time > 0) {
time_t rtc_sec;
rtc_sec = (time_t) (i->rtc_time / USEC_PER_SEC);
n = strftime(a, sizeof a, "%a %Y-%m-%d %H:%M:%S", gmtime_r(&rtc_sec, &tm));
printf(" RTC time: %s\n", n > 0 ? a : "n/a");
} else
printf(" RTC time: %s\n", "n/a");
if (have_time)
n = strftime(a, sizeof a, "%Z, %z", localtime_r(&sec, &tm));
/* Restore the $TZ */
if (old_tz)
r = setenv("TZ", old_tz, true);
else
r = unsetenv("TZ");
if (r < 0)
log_warning_errno(errno, "Failed to set TZ environment variable, ignoring: %m");
else
tzset();
printf(" Time zone: %s (%s)\n"
"System clock synchronized: %s\n"
" NTP service: %s\n"
" RTC in local TZ: %s\n",
strna(i->timezone), have_time && n > 0 ? a : "n/a",
yes_no(i->ntp_synced),
i->ntp_capable ? (i->ntp_active ? "active" : "inactive") : "n/a",
yes_no(i->rtc_local));
if (i->rtc_local)
printf("\n%s"
"Warning: The system is configured to read the RTC time in the local time zone.\n"
" This mode cannot be fully supported. It will create various problems\n"
" with time zone changes and daylight saving time adjustments. The RTC\n"
" time is never updated, it relies on external facilities to maintain it.\n"
" If at all possible, use RTC in UTC by calling\n"
" 'timedatectl set-local-rtc 0'.%s\n", ansi_highlight(), ansi_normal());
}
static int show_status(int argc, char **argv, void *userdata) {
StatusInfo info = {};
static const struct bus_properties_map map[] = {
{ "Timezone", "s", NULL, offsetof(StatusInfo, timezone) },
{ "LocalRTC", "b", NULL, offsetof(StatusInfo, rtc_local) },
{ "NTP", "b", NULL, offsetof(StatusInfo, ntp_active) },
{ "CanNTP", "b", NULL, offsetof(StatusInfo, ntp_capable) },
{ "NTPSynchronized", "b", NULL, offsetof(StatusInfo, ntp_synced) },
{ "TimeUSec", "t", NULL, offsetof(StatusInfo, time) },
{ "RTCTimeUSec", "t", NULL, offsetof(StatusInfo, rtc_time) },
{}
};
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
sd_bus *bus = userdata;
int r;
assert(bus);
r = bus_map_all_properties(bus,
"org.freedesktop.timedate1",
"/org/freedesktop/timedate1",
map,
BUS_MAP_BOOLEAN_AS_BOOL,
&error,
&m,
&info);
if (r < 0)
return log_error_errno(r, "Failed to query server: %s", bus_error_message(&error, r));
print_status_info(&info);
return r;
}
static int show_properties(int argc, char **argv, void *userdata) {
sd_bus *bus = userdata;
int r;
assert(bus);
r = bus_print_all_properties(bus,
"org.freedesktop.timedate1",
"/org/freedesktop/timedate1",
NULL,
arg_property,
arg_value,
arg_all,
NULL);
if (r < 0)
return bus_log_parse_error(r);
return 0;
}
static int set_time(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
bool relative = false, interactive = arg_ask_password;
sd_bus *bus = userdata;
usec_t t;
int r;
polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
r = parse_timestamp(argv[1], &t);
if (r < 0)
return log_error_errno(r, "Failed to parse time specification '%s': %m", argv[1]);
r = sd_bus_call_method(bus,
"org.freedesktop.timedate1",
"/org/freedesktop/timedate1",
"org.freedesktop.timedate1",
"SetTime",
&error,
NULL,
"xbb", (int64_t) t, relative, interactive);
if (r < 0)
return log_error_errno(r, "Failed to set time: %s", bus_error_message(&error, r));
return 0;
}
static int set_timezone(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r;
polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
r = sd_bus_call_method(bus,
"org.freedesktop.timedate1",
"/org/freedesktop/timedate1",
"org.freedesktop.timedate1",
"SetTimezone",
&error,
NULL,
"sb", argv[1], arg_ask_password);
if (r < 0)
return log_error_errno(r, "Failed to set time zone: %s", bus_error_message(&error, r));
return 0;
}
static int set_local_rtc(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r, b;
polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
b = parse_boolean(argv[1]);
if (b < 0)
return log_error_errno(b, "Failed to parse local RTC setting '%s': %m", argv[1]);
r = sd_bus_call_method(bus,
"org.freedesktop.timedate1",
"/org/freedesktop/timedate1",
"org.freedesktop.timedate1",
"SetLocalRTC",
&error,
NULL,
"bbb", b, arg_adjust_system_clock, arg_ask_password);
if (r < 0)
return log_error_errno(r, "Failed to set local RTC: %s", bus_error_message(&error, r));
return 0;
}
static int set_ntp(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int b, r;
polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
b = parse_boolean(argv[1]);
if (b < 0)
return log_error_errno(b, "Failed to parse NTP setting '%s': %m", argv[1]);
r = sd_bus_call_method(bus,
"org.freedesktop.timedate1",
"/org/freedesktop/timedate1",
"org.freedesktop.timedate1",
"SetNTP",
&error,
NULL,
"bb", b, arg_ask_password);
if (r < 0)
return log_error_errno(r, "Failed to set ntp: %s", bus_error_message(&error, r));
return 0;
}
static int list_timezones(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
int r;
char** zones;
r = sd_bus_call_method(bus,
"org.freedesktop.timedate1",
"/org/freedesktop/timedate1",
"org.freedesktop.timedate1",
"ListTimezones",
&error,
&reply,
NULL);
if (r < 0)
return log_error_errno(r, "Failed to request list of time zones: %s",
bus_error_message(&error, r));
r = sd_bus_message_read_strv(reply, &zones);
if (r < 0)
return bus_log_parse_error(r);
(void) pager_open(arg_pager_flags);
strv_print(zones);
return 0;
}
typedef struct NTPStatusInfo {
const char *server_name;
char *server_address;
usec_t poll_interval, poll_max, poll_min;
usec_t root_distance_max;
uint32_t leap, version, mode, stratum;
int32_t precision;
usec_t root_delay, root_dispersion;
union {
char str[5];
uint32_t val;
} reference;
usec_t origin, recv, trans, dest;
bool spike;
uint64_t packet_count;
usec_t jitter;
int64_t freq;
} NTPStatusInfo;
static void ntp_status_info_clear(NTPStatusInfo *p) {
p->server_address = mfree(p->server_address);
}
static const char * const ntp_leap_table[4] = {
[0] = "normal",
[1] = "last minute of the day has 61 seconds",
[2] = "last minute of the day has 59 seconds",
[3] = "not synchronized",
};
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wtype-limits"
DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(ntp_leap, uint32_t);
#pragma GCC diagnostic pop
static void print_ntp_status_info(NTPStatusInfo *i) {
char ts[FORMAT_TIMESPAN_MAX], tmin[FORMAT_TIMESPAN_MAX], tmax[FORMAT_TIMESPAN_MAX];
usec_t delay, t14, t23, offset, root_distance;
bool offset_sign;
assert(i);
/*
* "Timestamp Name ID When Generated
* ------------------------------------------------------------
* Originate Timestamp T1 time request sent by client
* Receive Timestamp T2 time request received by server
* Transmit Timestamp T3 time reply sent by server
* Destination Timestamp T4 time reply received by client
*
* The round-trip delay, d, and system clock offset, t, are defined as:
* d = (T4 - T1) - (T3 - T2) t = ((T2 - T1) + (T3 - T4)) / 2"
*/
printf(" Server: %s (%s)\n",
i->server_address, i->server_name);
printf("Poll interval: %s (min: %s; max %s)\n",
format_timespan(ts, sizeof(ts), i->poll_interval, 0),
format_timespan(tmin, sizeof(tmin), i->poll_min, 0),
format_timespan(tmax, sizeof(tmax), i->poll_max, 0));
if (i->packet_count == 0) {
printf(" Packet count: 0\n");
return;
}
if (i->dest < i->origin || i->trans < i->recv || i->dest - i->origin < i->trans - i->recv) {
log_error("Invalid NTP response");
return;
}
delay = (i->dest - i->origin) - (i->trans - i->recv);
t14 = i->origin + i->dest;
t23 = i->recv + i->trans;
offset_sign = t14 < t23;
offset = (offset_sign ? t23 - t14 : t14 - t23) / 2;
root_distance = i->root_delay / 2 + i->root_dispersion;
printf(" Leap: %s\n"
" Version: %" PRIu32 "\n"
" Stratum: %" PRIu32 "\n",
ntp_leap_to_string(i->leap),
i->version,
i->stratum);
if (i->stratum <= 1)
printf(" Reference: %s\n", i->reference.str);
else
printf(" Reference: %" PRIX32 "\n", be32toh(i->reference.val));
printf(" Precision: %s (%" PRIi32 ")\n",
format_timespan(ts, sizeof(ts), DIV_ROUND_UP((nsec_t) (exp2(i->precision) * NSEC_PER_SEC), NSEC_PER_USEC), 0),
i->precision);
printf("Root distance: %s (max: %s)\n",
format_timespan(ts, sizeof(ts), root_distance, 0),
format_timespan(tmax, sizeof(tmax), i->root_distance_max, 0));
printf(" Offset: %s%s\n",
offset_sign ? "+" : "-",
format_timespan(ts, sizeof(ts), offset, 0));
printf(" Delay: %s\n",
format_timespan(ts, sizeof(ts), delay, 0));
printf(" Jitter: %s\n",
format_timespan(ts, sizeof(ts), i->jitter, 0));
printf(" Packet count: %" PRIu64 "\n", i->packet_count);
if (!i->spike)
printf(" Frequency: %+.3fppm\n",
(double) i->freq / 0x10000);
}
static int map_server_address(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
char **p = (char **) userdata;
const void *d;
int family, r;
size_t sz;
assert(p);
r = sd_bus_message_enter_container(m, 'r', "iay");
if (r < 0)
return r;
r = sd_bus_message_read(m, "i", &family);
if (r < 0)
return r;
r = sd_bus_message_read_array(m, 'y', &d, &sz);
if (r < 0)
return r;
r = sd_bus_message_exit_container(m);
if (r < 0)
return r;
if (sz == 0 && family == AF_UNSPEC) {
*p = mfree(*p);
return 0;
}
if (!IN_SET(family, AF_INET, AF_INET6))
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Unknown address family %i", family);
if (sz != FAMILY_ADDRESS_SIZE(family))
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Invalid address size");
r = in_addr_to_string(family, d, p);
if (r < 0)
return r;
return 0;
}
static int map_ntp_message(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
NTPStatusInfo *p = userdata;
const void *d;
size_t sz;
int32_t b;
int r;
assert(p);
r = sd_bus_message_enter_container(m, 'r', "uuuuittayttttbtt");
if (r < 0)
return r;
r = sd_bus_message_read(m, "uuuuitt",
&p->leap, &p->version, &p->mode, &p->stratum, &p->precision,
&p->root_delay, &p->root_dispersion);
if (r < 0)
return r;
r = sd_bus_message_read_array(m, 'y', &d, &sz);
if (r < 0)
return r;
r = sd_bus_message_read(m, "ttttbtt",
&p->origin, &p->recv, &p->trans, &p->dest,
&b, &p->packet_count, &p->jitter);
if (r < 0)
return r;
r = sd_bus_message_exit_container(m);
if (r < 0)
return r;
if (sz != 4)
return -EINVAL;
memcpy(p->reference.str, d, sz);
p->spike = b;
return 0;
}
static int show_timesync_status_once(sd_bus *bus) {
static const struct bus_properties_map map_timesync[] = {
{ "ServerName", "s", NULL, offsetof(NTPStatusInfo, server_name) },
{ "ServerAddress", "(iay)", map_server_address, offsetof(NTPStatusInfo, server_address) },
{ "PollIntervalUSec", "t", NULL, offsetof(NTPStatusInfo, poll_interval) },
{ "PollIntervalMinUSec", "t", NULL, offsetof(NTPStatusInfo, poll_min) },
{ "PollIntervalMaxUSec", "t", NULL, offsetof(NTPStatusInfo, poll_max) },
{ "RootDistanceMaxUSec", "t", NULL, offsetof(NTPStatusInfo, root_distance_max) },
{ "NTPMessage", "(uuuuittayttttbtt)", map_ntp_message, 0 },
{ "Frequency", "x", NULL, offsetof(NTPStatusInfo, freq) },
{}
};
_cleanup_(ntp_status_info_clear) NTPStatusInfo info = {};
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
int r;
assert(bus);
r = bus_map_all_properties(bus,
"org.freedesktop.timesync1",
"/org/freedesktop/timesync1",
map_timesync,
BUS_MAP_BOOLEAN_AS_BOOL,
&error,
&m,
&info);
if (r < 0)
return log_error_errno(r, "Failed to query server: %s", bus_error_message(&error, r));
if (arg_monitor && !terminal_is_dumb())
fputs(ANSI_HOME_CLEAR, stdout);
print_ntp_status_info(&info);
return 0;
}
static int on_properties_changed(sd_bus_message *m, void *userdata, sd_bus_error *error) {
const char *name;
int r;
assert(m);
r = sd_bus_message_read(m, "s", &name);
if (r < 0)
return log_error_errno(r, "Failed to read interface name: %m");
if (!streq_ptr(name, "org.freedesktop.timesync1.Manager"))
return 0;
return show_timesync_status_once(sd_bus_message_get_bus(m));
}
static int show_timesync_status(int argc, char **argv, void *userdata) {
_cleanup_(sd_event_unrefp) sd_event *event = NULL;
sd_bus *bus = userdata;
int r;
assert(bus);
r = show_timesync_status_once(bus);
if (r < 0)
return r;
if (!arg_monitor)
return 0;
r = sd_event_default(&event);
if (r < 0)
return log_error_errno(r, "Failed to get event loop: %m");
r = sd_bus_match_signal(bus,
NULL,
"org.freedesktop.timesync1",
"/org/freedesktop/timesync1",
"org.freedesktop.DBus.Properties",
"PropertiesChanged",
on_properties_changed, NULL);
if (r < 0)
return log_error_errno(r, "Failed to request match for PropertiesChanged signal: %m");
r = sd_bus_attach_event(bus, event, SD_EVENT_PRIORITY_NORMAL);
if (r < 0)
return log_error_errno(r, "Failed to attach bus to event loop: %m");
r = sd_event_loop(event);
if (r < 0)
return log_error_errno(r, "Failed to run event loop: %m");
return 0;
}
static int print_timesync_property(const char *name, const char *expected_value, sd_bus_message *m, bool value, bool all) {
char type;
const char *contents;
int r;
assert(name);
assert(m);
r = sd_bus_message_peek_type(m, &type, &contents);
if (r < 0)
return r;
switch (type) {
case SD_BUS_TYPE_STRUCT:
if (streq(name, "NTPMessage")) {
_cleanup_(ntp_status_info_clear) NTPStatusInfo i = {};
char ts[FORMAT_TIMESPAN_MAX], stamp[FORMAT_TIMESTAMP_MAX];
r = map_ntp_message(NULL, NULL, m, NULL, &i);
if (r < 0)
return r;
if (i.packet_count == 0)
return 1;
if (!value) {
fputs(name, stdout);
fputc('=', stdout);
}
printf("{ Leap=%u, Version=%u, Mode=%u, Stratum=%u, Precision=%i,",
i.leap, i.version, i.mode, i.stratum, i.precision);
printf(" RootDelay=%s,",
format_timespan(ts, sizeof(ts), i.root_delay, 0));
printf(" RootDispersion=%s,",
format_timespan(ts, sizeof(ts), i.root_dispersion, 0));
if (i.stratum == 1)
printf(" Reference=%s,", i.reference.str);
else
printf(" Reference=%" PRIX32 ",", be32toh(i.reference.val));
printf(" OriginateTimestamp=%s,",
format_timestamp(stamp, sizeof(stamp), i.origin));
printf(" ReceiveTimestamp=%s,",
format_timestamp(stamp, sizeof(stamp), i.recv));
printf(" TransmitTimestamp=%s,",
format_timestamp(stamp, sizeof(stamp), i.trans));
printf(" DestinationTimestamp=%s,",
format_timestamp(stamp, sizeof(stamp), i.dest));
printf(" Ignored=%s PacketCount=%" PRIu64 ",",
yes_no(i.spike), i.packet_count);
printf(" Jitter=%s }\n",
format_timespan(ts, sizeof(ts), i.jitter, 0));
return 1;
} else if (streq(name, "ServerAddress")) {
_cleanup_free_ char *str = NULL;
r = map_server_address(NULL, NULL, m, NULL, &str);
if (r < 0)
return r;
if (arg_all || !isempty(str))
bus_print_property_value(name, expected_value, value, str);
return 1;
}
break;
}
return 0;
}
static int show_timesync(int argc, char **argv, void *userdata) {
sd_bus *bus = userdata;
int r;
assert(bus);
r = bus_print_all_properties(bus,
"org.freedesktop.timesync1",
"/org/freedesktop/timesync1",
print_timesync_property,
arg_property,
arg_value,
arg_all,
NULL);
if (r < 0)
return bus_log_parse_error(r);
return 0;
}
static int parse_ifindex_bus(sd_bus *bus, const char *str, int *ret) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
int32_t i;
int r;
assert(bus);
assert(str);
assert(ret);
r = parse_ifindex(str, ret);
if (r >= 0)
return 0;
r = sd_bus_call_method(
bus,
"org.freedesktop.network1",
"/org/freedesktop/network1",
"org.freedesktop.network1.Manager",
"GetLinkByName",
&error,
&reply,
"s", str);
if (r < 0)
return log_error_errno(r, "Failed to get ifindex of interfaces %s: %s", str, bus_error_message(&error, r));
r = sd_bus_message_read(reply, "io", &i, NULL);
if (r < 0)
return bus_log_create_error(r);
*ret = i;
return 0;
}
static int verb_ntp_servers(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL;
sd_bus *bus = userdata;
int ifindex, r;
assert(bus);
r = parse_ifindex_bus(bus, argv[1], &ifindex);
if (r < 0)
return r;
polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
r = sd_bus_message_new_method_call(
bus,
&req,
"org.freedesktop.network1",
"/org/freedesktop/network1",
"org.freedesktop.network1.Manager",
"SetLinkNTP");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append(req, "i", ifindex);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append_strv(req, argv + 2);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_call(bus, req, 0, &error, NULL);
if (r < 0)
return log_error_errno(r, "Failed to set NTP servers: %s", bus_error_message(&error, r));
return 0;
}
static int verb_revert(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int ifindex, r;
assert(bus);
r = parse_ifindex_bus(bus, argv[1], &ifindex);
if (r < 0)
return r;
polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
r = sd_bus_call_method(
bus,
"org.freedesktop.network1",
"/org/freedesktop/network1",
"org.freedesktop.network1.Manager",
"RevertLinkNTP",
&error,
NULL,
"i", ifindex);
if (r < 0)
return log_error_errno(r, "Failed to revert interface configuration: %s", bus_error_message(&error, r));
return 0;
}
static int help(void) {
_cleanup_free_ char *link = NULL;
int r;
r = terminal_urlify_man("timedatectl", "1", &link);
if (r < 0)
return log_oom();
printf("%s [OPTIONS...] COMMAND ...\n\n"
"Query or change system time and date settings.\n\n"
" -h --help Show this help message\n"
" --version Show package version\n"
" --no-pager Do not pipe output into a pager\n"
" --no-ask-password Do not prompt for password\n"
" -H --host=[USER@]HOST Operate on remote host\n"
" -M --machine=CONTAINER Operate on local container\n"
" --adjust-system-clock Adjust system clock when changing local RTC mode\n"
" --monitor Monitor status of systemd-timesyncd\n"
" -p --property=NAME Show only properties by this name\n"
" -a --all Show all properties, including empty ones\n"
" --value When showing properties, only print the value\n"
"\n"
"Commands:\n"
" status Show current time settings\n"
" show Show properties of systemd-timedated\n"
" set-time TIME Set system time\n"
" set-timezone ZONE Set system time zone\n"
" list-timezones Show known time zones\n"
" set-local-rtc BOOL Control whether RTC is in local time\n"
" set-ntp BOOL Enable or disable network time synchronization\n"
"\n"
"systemd-timesyncd Commands:\n"
" timesync-status Show status of systemd-timesyncd\n"
" show-timesync Show properties of systemd-timesyncd\n"
"\nSee the %s for details.\n"
, program_invocation_short_name
, link
);
return 0;
}
static int verb_help(int argc, char **argv, void *userdata) {
return help();
}
static int parse_argv(int argc, char *argv[]) {
enum {
ARG_VERSION = 0x100,
ARG_NO_PAGER,
ARG_ADJUST_SYSTEM_CLOCK,
ARG_NO_ASK_PASSWORD,
ARG_MONITOR,
ARG_VALUE,
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ "no-pager", no_argument, NULL, ARG_NO_PAGER },
{ "host", required_argument, NULL, 'H' },
{ "machine", required_argument, NULL, 'M' },
{ "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
{ "adjust-system-clock", no_argument, NULL, ARG_ADJUST_SYSTEM_CLOCK },
{ "monitor", no_argument, NULL, ARG_MONITOR },
{ "property", required_argument, NULL, 'p' },
{ "all", no_argument, NULL, 'a' },
{ "value", no_argument, NULL, ARG_VALUE },
{}
};
int c, r;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "hH:M:p:a", options, NULL)) >= 0)
switch (c) {
case 'h':
return help();
case ARG_VERSION:
return version();
case 'H':
arg_transport = BUS_TRANSPORT_REMOTE;
arg_host = optarg;
break;
case 'M':
arg_transport = BUS_TRANSPORT_MACHINE;
arg_host = optarg;
break;
case ARG_NO_ASK_PASSWORD:
arg_ask_password = false;
break;
case ARG_ADJUST_SYSTEM_CLOCK:
arg_adjust_system_clock = true;
break;
case ARG_NO_PAGER:
arg_pager_flags |= PAGER_DISABLE;
break;
case ARG_MONITOR:
arg_monitor = true;
break;
case 'p': {
r = strv_extend(&arg_property, optarg);
if (r < 0)
return log_oom();
/* If the user asked for a particular
* property, show it to him, even if it is
* empty. */
arg_all = true;
break;
}
case 'a':
arg_all = true;
break;
case ARG_VALUE:
arg_value = true;
break;
case '?':
return -EINVAL;
default:
assert_not_reached("Unhandled option");
}
return 1;
}
static int timedatectl_main(sd_bus *bus, int argc, char *argv[]) {
static const Verb verbs[] = {
{ "status", VERB_ANY, 1, VERB_DEFAULT, show_status },
{ "show", VERB_ANY, 1, 0, show_properties },
{ "set-time", 2, 2, 0, set_time },
{ "set-timezone", 2, 2, 0, set_timezone },
{ "list-timezones", VERB_ANY, 1, 0, list_timezones },
{ "set-local-rtc", 2, 2, 0, set_local_rtc },
{ "set-ntp", 2, 2, 0, set_ntp },
{ "timesync-status", VERB_ANY, 1, 0, show_timesync_status },
{ "show-timesync", VERB_ANY, 1, 0, show_timesync },
{ "ntp-servers", 3, VERB_ANY, 0, verb_ntp_servers },
{ "revert", 2, 2, 0, verb_revert },
{ "help", VERB_ANY, VERB_ANY, 0, verb_help }, /* Not documented, but supported since it is created. */
{}
};
return dispatch_verb(argc, argv, verbs, bus);
}
static int run(int argc, char *argv[]) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
int r;
setlocale(LC_ALL, "");
log_show_color(true);
log_parse_environment();
log_open();
r = parse_argv(argc, argv);
if (r <= 0)
return r;
r = bus_connect_transport(arg_transport, arg_host, false, &bus);
if (r < 0)
return log_error_errno(r, "Failed to create bus connection: %m");
return timedatectl_main(bus, argc, argv);
}
DEFINE_MAIN_FUNCTION(run);
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