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-rw-r--r--src/timedate/timedated.c1048
1 files changed, 1048 insertions, 0 deletions
diff --git a/src/timedate/timedated.c b/src/timedate/timedated.c
new file mode 100644
index 0000000..eeb17b6
--- /dev/null
+++ b/src/timedate/timedated.c
@@ -0,0 +1,1048 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "sd-bus.h"
+#include "sd-event.h"
+#include "sd-messages.h"
+
+#include "alloc-util.h"
+#include "bus-common-errors.h"
+#include "bus-error.h"
+#include "bus-util.h"
+#include "clock-util.h"
+#include "def.h"
+#include "fileio-label.h"
+#include "fileio.h"
+#include "fs-util.h"
+#include "hashmap.h"
+#include "list.h"
+#include "main-func.h"
+#include "missing_capability.h"
+#include "path-util.h"
+#include "selinux-util.h"
+#include "signal-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "unit-def.h"
+#include "unit-name.h"
+#include "user-util.h"
+#include "util.h"
+
+#define NULL_ADJTIME_UTC "0.0 0 0\n0\nUTC\n"
+#define NULL_ADJTIME_LOCAL "0.0 0 0\n0\nLOCAL\n"
+
+typedef struct UnitStatusInfo {
+ char *name;
+ char *load_state;
+ char *unit_file_state;
+ char *active_state;
+ char *path;
+
+ LIST_FIELDS(struct UnitStatusInfo, units);
+} UnitStatusInfo;
+
+typedef struct Context {
+ char *zone;
+ bool local_rtc;
+ Hashmap *polkit_registry;
+ sd_bus_message *cache;
+
+ sd_bus_slot *slot_job_removed;
+
+ LIST_HEAD(UnitStatusInfo, units);
+} Context;
+
+static void unit_status_info_clear(UnitStatusInfo *p) {
+ assert(p);
+
+ p->load_state = mfree(p->load_state);
+ p->unit_file_state = mfree(p->unit_file_state);
+ p->active_state = mfree(p->active_state);
+}
+
+static void unit_status_info_free(UnitStatusInfo *p) {
+ assert(p);
+
+ unit_status_info_clear(p);
+ free(p->name);
+ free(p->path);
+ free(p);
+}
+
+static void context_clear(Context *c) {
+ UnitStatusInfo *p;
+
+ assert(c);
+
+ free(c->zone);
+ bus_verify_polkit_async_registry_free(c->polkit_registry);
+ sd_bus_message_unref(c->cache);
+
+ sd_bus_slot_unref(c->slot_job_removed);
+
+ while ((p = c->units)) {
+ LIST_REMOVE(units, c->units, p);
+ unit_status_info_free(p);
+ }
+}
+
+static int context_add_ntp_service(Context *c, const char *s) {
+ UnitStatusInfo *u;
+
+ if (!unit_name_is_valid(s, UNIT_NAME_PLAIN))
+ return -EINVAL;
+
+ /* Do not add this if it is already listed */
+ LIST_FOREACH(units, u, c->units)
+ if (streq(u->name, s))
+ return 0;
+
+ u = new0(UnitStatusInfo, 1);
+ if (!u)
+ return -ENOMEM;
+
+ u->name = strdup(s);
+ if (!u->name) {
+ free(u);
+ return -ENOMEM;
+ }
+
+ LIST_APPEND(units, c->units, u);
+
+ return 0;
+}
+
+static int context_parse_ntp_services(Context *c) {
+ const char *env, *p;
+ int r;
+
+ assert(c);
+
+ env = getenv("SYSTEMD_TIMEDATED_NTP_SERVICES");
+ if (!env) {
+ r = context_add_ntp_service(c, "systemd-timesyncd.service");
+ if (r < 0)
+ log_warning_errno(r, "Failed to add NTP service \"systemd-timesyncd.service\", ignoring: %m");
+
+ return 0;
+ }
+
+ for (p = env;;) {
+ _cleanup_free_ char *word = NULL;
+
+ r = extract_first_word(&p, &word, ":", 0);
+ if (r == 0)
+ break;
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_error("Invalid syntax, ignoring: %s", env);
+ break;
+ }
+
+ r = context_add_ntp_service(c, word);
+ if (r < 0)
+ log_warning_errno(r, "Failed to add NTP service \"%s\", ignoring: %m", word);
+ }
+
+ return 0;
+}
+
+static int context_ntp_service_is_active(Context *c) {
+ UnitStatusInfo *info;
+ int count = 0;
+
+ assert(c);
+
+ /* Call context_update_ntp_status() to update UnitStatusInfo before calling this. */
+
+ LIST_FOREACH(units, info, c->units)
+ count += !STRPTR_IN_SET(info->active_state, "inactive", "failed");
+
+ return count;
+}
+
+static int context_ntp_service_is_enabled(Context *c) {
+ UnitStatusInfo *info;
+ int count = 0;
+
+ assert(c);
+
+ /* Call context_update_ntp_status() to update UnitStatusInfo before calling this. */
+
+ LIST_FOREACH(units, info, c->units)
+ count += !STRPTR_IN_SET(info->unit_file_state, "masked", "masked-runtime", "disabled", "bad");
+
+ return count;
+}
+
+static int context_ntp_service_exists(Context *c) {
+ UnitStatusInfo *info;
+ int count = 0;
+
+ assert(c);
+
+ /* Call context_update_ntp_status() to update UnitStatusInfo before calling this. */
+
+ LIST_FOREACH(units, info, c->units)
+ count += streq_ptr(info->load_state, "loaded");
+
+ return count;
+}
+
+static int context_read_data(Context *c) {
+ _cleanup_free_ char *t = NULL;
+ int r;
+
+ assert(c);
+
+ r = get_timezone(&t);
+ if (r == -EINVAL)
+ log_warning_errno(r, "/etc/localtime should be a symbolic link to a time zone data file in /usr/share/zoneinfo/.");
+ else if (r < 0)
+ log_warning_errno(r, "Failed to get target of /etc/localtime: %m");
+
+ free_and_replace(c->zone, t);
+
+ c->local_rtc = clock_is_localtime(NULL) > 0;
+
+ return 0;
+}
+
+static int context_write_data_timezone(Context *c) {
+ _cleanup_free_ char *p = NULL;
+ int r = 0;
+
+ assert(c);
+
+ if (isempty(c->zone)) {
+ if (unlink("/etc/localtime") < 0 && errno != ENOENT)
+ r = -errno;
+
+ return r;
+ }
+
+ p = strappend("../usr/share/zoneinfo/", c->zone);
+ if (!p)
+ return log_oom();
+
+ r = symlink_atomic(p, "/etc/localtime");
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+static int context_write_data_local_rtc(Context *c) {
+ int r;
+ _cleanup_free_ char *s = NULL, *w = NULL;
+
+ assert(c);
+
+ r = read_full_file("/etc/adjtime", &s, NULL);
+ if (r < 0) {
+ if (r != -ENOENT)
+ return r;
+
+ if (!c->local_rtc)
+ return 0;
+
+ w = strdup(NULL_ADJTIME_LOCAL);
+ if (!w)
+ return -ENOMEM;
+ } else {
+ char *p;
+ const char *e = "\n"; /* default if there is less than 3 lines */
+ const char *prepend = "";
+ size_t a, b;
+
+ p = strchrnul(s, '\n');
+ if (*p == '\0')
+ /* only one line, no \n terminator */
+ prepend = "\n0\n";
+ else if (p[1] == '\0') {
+ /* only one line, with \n terminator */
+ ++p;
+ prepend = "0\n";
+ } else {
+ p = strchr(p+1, '\n');
+ if (!p) {
+ /* only two lines, no \n terminator */
+ prepend = "\n";
+ p = s + strlen(s);
+ } else {
+ char *end;
+ /* third line might have a \n terminator or not */
+ p++;
+ end = strchr(p, '\n');
+ /* if we actually have a fourth line, use that as suffix "e", otherwise the default \n */
+ if (end)
+ e = end;
+ }
+ }
+
+ a = p - s;
+ b = strlen(e);
+
+ w = new(char, a + (c->local_rtc ? 5 : 3) + strlen(prepend) + b + 1);
+ if (!w)
+ return -ENOMEM;
+
+ *(char*) mempcpy(stpcpy(stpcpy(mempcpy(w, s, a), prepend), c->local_rtc ? "LOCAL" : "UTC"), e, b) = 0;
+
+ if (streq(w, NULL_ADJTIME_UTC)) {
+ if (unlink("/etc/adjtime") < 0)
+ if (errno != ENOENT)
+ return -errno;
+
+ return 0;
+ }
+ }
+
+ mac_selinux_init();
+ return write_string_file_atomic_label("/etc/adjtime", w);
+}
+
+static int context_update_ntp_status(Context *c, sd_bus *bus, sd_bus_message *m) {
+ static const struct bus_properties_map map[] = {
+ { "LoadState", "s", NULL, offsetof(UnitStatusInfo, load_state) },
+ { "ActiveState", "s", NULL, offsetof(UnitStatusInfo, active_state) },
+ { "UnitFileState", "s", NULL, offsetof(UnitStatusInfo, unit_file_state) },
+ {}
+ };
+ UnitStatusInfo *u;
+ int r;
+
+ assert(c);
+ assert(bus);
+
+ /* Suppress calling context_update_ntp_status() multiple times within single DBus transaction. */
+ if (m) {
+ if (m == c->cache)
+ return 0;
+
+ sd_bus_message_unref(c->cache);
+ c->cache = sd_bus_message_ref(m);
+ }
+
+ LIST_FOREACH(units, u, c->units) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_free_ char *path = NULL;
+
+ unit_status_info_clear(u);
+
+ path = unit_dbus_path_from_name(u->name);
+ if (!path)
+ return -ENOMEM;
+
+ r = bus_map_all_properties(
+ bus,
+ "org.freedesktop.systemd1",
+ path,
+ map,
+ BUS_MAP_STRDUP,
+ &error,
+ NULL,
+ u);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get properties: %s", bus_error_message(&error, r));
+ }
+
+ return 0;
+}
+
+static int match_job_removed(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+ Context *c = userdata;
+ UnitStatusInfo *u;
+ const char *path;
+ unsigned n = 0;
+ int r;
+
+ assert(c);
+ assert(m);
+
+ r = sd_bus_message_read(m, "uoss", NULL, &path, NULL, NULL);
+ if (r < 0) {
+ bus_log_parse_error(r);
+ return 0;
+ }
+
+ LIST_FOREACH(units, u, c->units)
+ if (streq_ptr(path, u->path))
+ u->path = mfree(u->path);
+ else
+ n += !!u->path;
+
+ if (n == 0) {
+ (void) sd_bus_emit_properties_changed(sd_bus_message_get_bus(m), "/org/freedesktop/timedate1", "org.freedesktop.timedate1", "NTP", NULL);
+
+ c->slot_job_removed = sd_bus_slot_unref(c->slot_job_removed);
+ }
+
+ return 0;
+}
+
+static int unit_start_or_stop(UnitStatusInfo *u, sd_bus *bus, sd_bus_error *error, bool start) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ const char *path;
+ int r;
+
+ assert(u);
+ assert(bus);
+ assert(error);
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ start ? "StartUnit" : "StopUnit",
+ error,
+ &reply,
+ "ss",
+ u->name,
+ "replace");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read(reply, "o", &path);
+ if (r < 0)
+ return bus_log_parse_error(r);
+
+ r = free_and_strdup(&u->path, path);
+ if (r < 0)
+ return log_oom();
+
+ return 0;
+}
+
+static int unit_enable_or_disable(UnitStatusInfo *u, sd_bus *bus, sd_bus_error *error, bool enable) {
+ int r;
+
+ assert(u);
+ assert(bus);
+ assert(error);
+
+ /* Call context_update_ntp_status() to update UnitStatusInfo before calling this. */
+
+ if (streq(u->unit_file_state, "enabled") == enable)
+ return 0;
+
+ if (enable)
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "EnableUnitFiles",
+ error,
+ NULL,
+ "asbb", 1,
+ u->name,
+ false, true);
+ else
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "DisableUnitFiles",
+ error,
+ NULL,
+ "asb", 1,
+ u->name,
+ false);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "Reload",
+ error,
+ NULL,
+ NULL);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_time, "t", now(CLOCK_REALTIME));
+static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_ntp_sync, "b", ntp_synced());
+
+static int property_get_rtc_time(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ struct tm tm;
+ usec_t t;
+ int r;
+
+ zero(tm);
+ r = clock_get_hwclock(&tm);
+ if (r == -EBUSY) {
+ log_warning("/dev/rtc is busy. Is somebody keeping it open continuously? That's not a good idea... Returning a bogus RTC timestamp.");
+ t = 0;
+ } else if (r == -ENOENT) {
+ log_debug("/dev/rtc not found.");
+ t = 0; /* no RTC found */
+ } else if (r < 0)
+ return sd_bus_error_set_errnof(error, r, "Failed to read RTC: %m");
+ else
+ t = (usec_t) timegm(&tm) * USEC_PER_SEC;
+
+ return sd_bus_message_append(reply, "t", t);
+}
+
+static int property_get_can_ntp(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Context *c = userdata;
+ int r;
+
+ assert(c);
+ assert(bus);
+ assert(property);
+ assert(reply);
+ assert(error);
+
+ if (c->slot_job_removed)
+ /* When the previous request is not finished, then assume NTP is enabled. */
+ return sd_bus_message_append(reply, "b", true);
+
+ r = context_update_ntp_status(c, bus, reply);
+ if (r < 0)
+ return r;
+
+ return sd_bus_message_append(reply, "b", context_ntp_service_exists(c) > 0);
+}
+
+static int property_get_ntp(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Context *c = userdata;
+ int r;
+
+ assert(c);
+ assert(bus);
+ assert(property);
+ assert(reply);
+ assert(error);
+
+ if (c->slot_job_removed)
+ /* When the previous request is not finished, then assume NTP is active. */
+ return sd_bus_message_append(reply, "b", true);
+
+ r = context_update_ntp_status(c, bus, reply);
+ if (r < 0)
+ return r;
+
+ return sd_bus_message_append(reply, "b", context_ntp_service_is_active(c) > 0);
+}
+
+static int method_set_timezone(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+ Context *c = userdata;
+ int interactive, r;
+ const char *z;
+
+ assert(m);
+ assert(c);
+
+ r = sd_bus_message_read(m, "sb", &z, &interactive);
+ if (r < 0)
+ return r;
+
+ if (!timezone_is_valid(z, LOG_DEBUG))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid time zone '%s'", z);
+
+ if (streq_ptr(z, c->zone))
+ return sd_bus_reply_method_return(m, NULL);
+
+ r = bus_verify_polkit_async(
+ m,
+ CAP_SYS_TIME,
+ "org.freedesktop.timedate1.set-timezone",
+ NULL,
+ interactive,
+ UID_INVALID,
+ &c->polkit_registry,
+ error);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
+
+ r = free_and_strdup(&c->zone, z);
+ if (r < 0)
+ return r;
+
+ /* 1. Write new configuration file */
+ r = context_write_data_timezone(c);
+ if (r < 0) {
+ log_error_errno(r, "Failed to set time zone: %m");
+ return sd_bus_error_set_errnof(error, r, "Failed to set time zone: %m");
+ }
+
+ /* 2. Make glibc notice the new timezone */
+ tzset();
+
+ /* 3. Tell the kernel our timezone */
+ r = clock_set_timezone(NULL);
+ if (r < 0)
+ log_debug_errno(r, "Failed to tell kernel about timezone, ignoring: %m");
+
+ if (c->local_rtc) {
+ struct timespec ts;
+ struct tm tm;
+
+ /* 4. Sync RTC from system clock, with the new delta */
+ assert_se(clock_gettime(CLOCK_REALTIME, &ts) == 0);
+ assert_se(localtime_r(&ts.tv_sec, &tm));
+
+ r = clock_set_hwclock(&tm);
+ if (r < 0)
+ log_debug_errno(r, "Failed to sync time to hardware clock, ignoring: %m");
+ }
+
+ log_struct(LOG_INFO,
+ "MESSAGE_ID=" SD_MESSAGE_TIMEZONE_CHANGE_STR,
+ "TIMEZONE=%s", c->zone,
+ "TIMEZONE_SHORTNAME=%s", tzname[daylight],
+ "DAYLIGHT=%i", daylight,
+ LOG_MESSAGE("Changed time zone to '%s' (%s).", c->zone, tzname[daylight]));
+
+ (void) sd_bus_emit_properties_changed(sd_bus_message_get_bus(m), "/org/freedesktop/timedate1", "org.freedesktop.timedate1", "Timezone", NULL);
+
+ return sd_bus_reply_method_return(m, NULL);
+}
+
+static int method_set_local_rtc(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+ int lrtc, fix_system, interactive;
+ Context *c = userdata;
+ struct timespec ts;
+ int r;
+
+ assert(m);
+ assert(c);
+
+ r = sd_bus_message_read(m, "bbb", &lrtc, &fix_system, &interactive);
+ if (r < 0)
+ return r;
+
+ if (lrtc == c->local_rtc)
+ return sd_bus_reply_method_return(m, NULL);
+
+ r = bus_verify_polkit_async(
+ m,
+ CAP_SYS_TIME,
+ "org.freedesktop.timedate1.set-local-rtc",
+ NULL,
+ interactive,
+ UID_INVALID,
+ &c->polkit_registry,
+ error);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return 1;
+
+ c->local_rtc = lrtc;
+
+ /* 1. Write new configuration file */
+ r = context_write_data_local_rtc(c);
+ if (r < 0) {
+ log_error_errno(r, "Failed to set RTC to local/UTC: %m");
+ return sd_bus_error_set_errnof(error, r, "Failed to set RTC to local/UTC: %m");
+ }
+
+ /* 2. Tell the kernel our timezone */
+ r = clock_set_timezone(NULL);
+ if (r < 0)
+ log_debug_errno(r, "Failed to tell kernel about timezone, ignoring: %m");
+
+ /* 3. Synchronize clocks */
+ assert_se(clock_gettime(CLOCK_REALTIME, &ts) == 0);
+
+ if (fix_system) {
+ struct tm tm;
+
+ /* Sync system clock from RTC; first, initialize the timezone fields of struct tm. */
+ if (c->local_rtc)
+ localtime_r(&ts.tv_sec, &tm);
+ else
+ gmtime_r(&ts.tv_sec, &tm);
+
+ /* Override the main fields of struct tm, but not the timezone fields */
+ r = clock_get_hwclock(&tm);
+ if (r < 0)
+ log_debug_errno(r, "Failed to get hardware clock, ignoring: %m");
+ else {
+ /* And set the system clock with this */
+ if (c->local_rtc)
+ ts.tv_sec = mktime(&tm);
+ else
+ ts.tv_sec = timegm(&tm);
+
+ if (clock_settime(CLOCK_REALTIME, &ts) < 0)
+ log_debug_errno(errno, "Failed to update system clock, ignoring: %m");
+ }
+
+ } else {
+ struct tm tm;
+
+ /* Sync RTC from system clock */
+ if (c->local_rtc)
+ localtime_r(&ts.tv_sec, &tm);
+ else
+ gmtime_r(&ts.tv_sec, &tm);
+
+ r = clock_set_hwclock(&tm);
+ if (r < 0)
+ log_debug_errno(r, "Failed to sync time to hardware clock, ignoring: %m");
+ }
+
+ log_info("RTC configured to %s time.", c->local_rtc ? "local" : "UTC");
+
+ (void) sd_bus_emit_properties_changed(sd_bus_message_get_bus(m), "/org/freedesktop/timedate1", "org.freedesktop.timedate1", "LocalRTC", NULL);
+
+ return sd_bus_reply_method_return(m, NULL);
+}
+
+static int method_set_time(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+ sd_bus *bus = sd_bus_message_get_bus(m);
+ int relative, interactive, r;
+ Context *c = userdata;
+ int64_t utc;
+ struct timespec ts;
+ usec_t start;
+ struct tm tm;
+
+ assert(m);
+ assert(c);
+
+ if (c->slot_job_removed)
+ return sd_bus_error_set(error, BUS_ERROR_AUTOMATIC_TIME_SYNC_ENABLED, "Previous request is not finished, refusing.");
+
+ r = context_update_ntp_status(c, bus, m);
+ if (r < 0)
+ return sd_bus_error_set_errnof(error, r, "Failed to update context: %m");
+
+ if (context_ntp_service_is_active(c) > 0)
+ return sd_bus_error_set(error, BUS_ERROR_AUTOMATIC_TIME_SYNC_ENABLED, "Automatic time synchronization is enabled");
+
+ /* this only gets used if dbus does not provide a timestamp */
+ start = now(CLOCK_MONOTONIC);
+
+ r = sd_bus_message_read(m, "xbb", &utc, &relative, &interactive);
+ if (r < 0)
+ return r;
+
+ if (!relative && utc <= 0)
+ return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid absolute time");
+
+ if (relative && utc == 0)
+ return sd_bus_reply_method_return(m, NULL);
+
+ if (relative) {
+ usec_t n, x;
+
+ n = now(CLOCK_REALTIME);
+ x = n + utc;
+
+ if ((utc > 0 && x < n) ||
+ (utc < 0 && x > n))
+ return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Time value overflow");
+
+ timespec_store(&ts, x);
+ } else
+ timespec_store(&ts, (usec_t) utc);
+
+ r = bus_verify_polkit_async(
+ m,
+ CAP_SYS_TIME,
+ "org.freedesktop.timedate1.set-time",
+ NULL,
+ interactive,
+ UID_INVALID,
+ &c->polkit_registry,
+ error);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return 1;
+
+ /* adjust ts for time spent in program */
+ r = sd_bus_message_get_monotonic_usec(m, &start);
+ /* when sd_bus_message_get_monotonic_usec() returns -ENODATA it does not modify &start */
+ if (r < 0 && r != -ENODATA)
+ return r;
+
+ timespec_store(&ts, timespec_load(&ts) + (now(CLOCK_MONOTONIC) - start));
+
+ /* Set system clock */
+ if (clock_settime(CLOCK_REALTIME, &ts) < 0) {
+ log_error_errno(errno, "Failed to set local time: %m");
+ return sd_bus_error_set_errnof(error, errno, "Failed to set local time: %m");
+ }
+
+ /* Sync down to RTC */
+ if (c->local_rtc)
+ localtime_r(&ts.tv_sec, &tm);
+ else
+ gmtime_r(&ts.tv_sec, &tm);
+
+ r = clock_set_hwclock(&tm);
+ if (r < 0)
+ log_debug_errno(r, "Failed to update hardware clock, ignoring: %m");
+
+ log_struct(LOG_INFO,
+ "MESSAGE_ID=" SD_MESSAGE_TIME_CHANGE_STR,
+ "REALTIME="USEC_FMT, timespec_load(&ts),
+ LOG_MESSAGE("Changed local time to %s", ctime(&ts.tv_sec)));
+
+ return sd_bus_reply_method_return(m, NULL);
+}
+
+static int method_set_ntp(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+ _cleanup_(sd_bus_slot_unrefp) sd_bus_slot *slot = NULL;
+ sd_bus *bus = sd_bus_message_get_bus(m);
+ Context *c = userdata;
+ UnitStatusInfo *u;
+ int enable, interactive, q, r;
+
+ assert(m);
+ assert(bus);
+ assert(c);
+
+ r = sd_bus_message_read(m, "bb", &enable, &interactive);
+ if (r < 0)
+ return r;
+
+ r = context_update_ntp_status(c, bus, m);
+ if (r < 0)
+ return r;
+
+ if (context_ntp_service_exists(c) <= 0)
+ return sd_bus_error_set(error, BUS_ERROR_NO_NTP_SUPPORT, "NTP not supported");
+
+ r = bus_verify_polkit_async(
+ m,
+ CAP_SYS_TIME,
+ "org.freedesktop.timedate1.set-ntp",
+ NULL,
+ interactive,
+ UID_INVALID,
+ &c->polkit_registry,
+ error);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return 1;
+
+ /* This method may be called frequently. Forget the previous job if it has not completed yet. */
+ LIST_FOREACH(units, u, c->units)
+ u->path = mfree(u->path);
+
+ if (!c->slot_job_removed) {
+ r = sd_bus_match_signal_async(
+ bus,
+ &slot,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "JobRemoved",
+ match_job_removed, NULL, c);
+ if (r < 0)
+ return r;
+ }
+
+ if (!enable)
+ LIST_FOREACH(units, u, c->units) {
+ if (!streq(u->load_state, "loaded"))
+ continue;
+
+ q = unit_enable_or_disable(u, bus, error, enable);
+ if (q < 0)
+ r = q;
+
+ q = unit_start_or_stop(u, bus, error, enable);
+ if (q < 0)
+ r = q;
+ }
+
+ else if (context_ntp_service_is_enabled(c) <= 0)
+ LIST_FOREACH(units, u, c->units) {
+ if (!streq(u->load_state, "loaded"))
+ continue;
+
+ r = unit_enable_or_disable(u, bus, error, enable);
+ if (r < 0)
+ continue;
+
+ r = unit_start_or_stop(u, bus, error, enable);
+ break;
+ }
+
+ else
+ LIST_FOREACH(units, u, c->units) {
+ if (!streq(u->load_state, "loaded") ||
+ !streq(u->unit_file_state, "enabled"))
+ continue;
+
+ r = unit_start_or_stop(u, bus, error, enable);
+ break;
+ }
+
+ if (r < 0)
+ return r;
+
+ if (slot)
+ c->slot_job_removed = TAKE_PTR(slot);
+
+ log_info("Set NTP to %sd", enable_disable(enable));
+
+ return sd_bus_reply_method_return(m, NULL);
+}
+
+static int method_list_timezones(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_strv_free_ char **zones = NULL;
+ int r;
+
+ assert(m);
+
+ r = get_timezones(&zones);
+ if (r < 0)
+ return sd_bus_error_set_errnof(error, r, "Failed to read list of time zones: %m");
+
+ r = sd_bus_message_new_method_return(m, &reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append_strv(reply, zones);
+ if (r < 0)
+ return r;
+
+ return sd_bus_send(NULL, reply, NULL);
+}
+
+static const sd_bus_vtable timedate_vtable[] = {
+ SD_BUS_VTABLE_START(0),
+ SD_BUS_PROPERTY("Timezone", "s", NULL, offsetof(Context, zone), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("LocalRTC", "b", bus_property_get_bool, offsetof(Context, local_rtc), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("CanNTP", "b", property_get_can_ntp, 0, 0),
+ SD_BUS_PROPERTY("NTP", "b", property_get_ntp, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("NTPSynchronized", "b", property_get_ntp_sync, 0, 0),
+ SD_BUS_PROPERTY("TimeUSec", "t", property_get_time, 0, 0),
+ SD_BUS_PROPERTY("RTCTimeUSec", "t", property_get_rtc_time, 0, 0),
+ SD_BUS_METHOD("SetTime", "xbb", NULL, method_set_time, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD("SetTimezone", "sb", NULL, method_set_timezone, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD("SetLocalRTC", "bbb", NULL, method_set_local_rtc, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD("SetNTP", "bb", NULL, method_set_ntp, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD("ListTimezones", NULL, "as", method_list_timezones, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_VTABLE_END,
+};
+
+static int connect_bus(Context *c, sd_event *event, sd_bus **_bus) {
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ int r;
+
+ assert(c);
+ assert(event);
+ assert(_bus);
+
+ r = sd_bus_default_system(&bus);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get system bus connection: %m");
+
+ r = sd_bus_add_object_vtable(bus, NULL, "/org/freedesktop/timedate1", "org.freedesktop.timedate1", timedate_vtable, c);
+ if (r < 0)
+ return log_error_errno(r, "Failed to register object: %m");
+
+ r = sd_bus_request_name_async(bus, NULL, "org.freedesktop.timedate1", 0, NULL, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Failed to request name: %m");
+
+ r = sd_bus_attach_event(bus, event, 0);
+ if (r < 0)
+ return log_error_errno(r, "Failed to attach bus to event loop: %m");
+
+ *_bus = TAKE_PTR(bus);
+
+ return 0;
+}
+
+static int run(int argc, char *argv[]) {
+ _cleanup_(context_clear) Context context = {};
+ _cleanup_(sd_event_unrefp) sd_event *event = NULL;
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ int r;
+
+ log_setup_service();
+
+ umask(0022);
+
+ if (argc != 1)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "This program takes no arguments.");
+
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
+
+ r = sd_event_default(&event);
+ if (r < 0)
+ return log_error_errno(r, "Failed to allocate event loop: %m");
+
+ (void) sd_event_set_watchdog(event, true);
+
+ r = sd_event_add_signal(event, NULL, SIGINT, NULL, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Failed to install SIGINT handler: %m");
+
+ r = sd_event_add_signal(event, NULL, SIGTERM, NULL, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Failed to install SIGTERM handler: %m");
+
+ r = connect_bus(&context, event, &bus);
+ if (r < 0)
+ return r;
+
+ (void) sd_bus_negotiate_timestamp(bus, true);
+
+ r = context_read_data(&context);
+ if (r < 0)
+ return log_error_errno(r, "Failed to read time zone data: %m");
+
+ r = context_parse_ntp_services(&context);
+ if (r < 0)
+ return r;
+
+ r = bus_event_loop_with_idle(event, bus, "org.freedesktop.timedate1", DEFAULT_EXIT_USEC, NULL, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Failed to run event loop: %m");
+
+ return 0;
+}
+
+DEFINE_MAIN_FUNCTION(run);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 17:46:55 +0000