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Systemd/src/timedate/timedatectl.c
Lennart Poettering 353b2baa20 tree-wide: clean up --help texts a bit 
This cleans up and unifies the outut of --help texts a bit:

1. Highlight the human friendly description string, not the command
   line via ANSI sequences. Previously both this description string and
   the brief command line summary was marked with the same ANSI
   highlight sequence, but given we auto-page to less and less does not
   honour multi-line highlights only the command line summary was
   affectively highlighted. Rationale: for highlighting the description
   instead of the command line: the command line summary is relatively
   boring, and mostly the same for out tools, the description on the
   other hand is pregnant, important and captions the whole thing and
   hence deserves highlighting.

2. Always suffix "Options" with ":" in the help text

3. Rename "Flags" →  "Options" in one case

4. Move commands to the top in a few cases

5. add coloring to many more help pages

6. Unify on COMMAND instead of {COMMAND} in the command line summary.
   Some tools did it one way, others the other way. I am not sure what
   precisely {} is supposed to mean, that uppercasing doesn't, hence
   let's simplify and stick to the {}-less syntax

And minor other tweaks.
2019-11-18 15:14:43 +01:00

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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, *tz_colon;
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 */
tz_colon = strjoina(":", isempty(i->timezone) ? "UTC" : i->timezone);
if (setenv("TZ", tz_colon, 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%sQuery or change system time and date settings.%s\n"
"\nCommands:\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"
"\nsystemd-timesyncd Commands:\n"
" timesync-status Show status of systemd-timesyncd\n"
" show-timesync Show properties of systemd-timesyncd\n"
"\nOptions:\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"
"\nSee the %s for details.\n"
, program_invocation_short_name
, ansi_highlight()
, ansi_normal()
, 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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