1133 lines
38 KiB
C
1133 lines
38 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
|
|
|
|
#include <errno.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.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 "conf-files.h"
|
|
#include "def.h"
|
|
#include "fd-util.h"
|
|
#include "fileio-label.h"
|
|
#include "fileio.h"
|
|
#include "fs-util.h"
|
|
#include "hashmap.h"
|
|
#include "list.h"
|
|
#include "main-func.h"
|
|
#include "memory-util.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"
|
|
|
|
#define NULL_ADJTIME_UTC "0.0 0 0\n0\nUTC\n"
|
|
#define NULL_ADJTIME_LOCAL "0.0 0 0\n0\nLOCAL\n"
|
|
|
|
#define UNIT_LIST_DIRS (const char* const*) CONF_PATHS_STRV("systemd/ntp-units.d")
|
|
|
|
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;
|
|
|
|
#define log_unit_full(unit, level, error, ...) \
|
|
({ \
|
|
const UnitStatusInfo *_u = (unit); \
|
|
log_object_internal(level, error, PROJECT_FILE, __LINE__, __func__, \
|
|
"UNIT=", _u->name, NULL, NULL, ##__VA_ARGS__); \
|
|
})
|
|
|
|
#define log_unit_debug(unit, ...) log_unit_full(unit, LOG_DEBUG, 0, ##__VA_ARGS__)
|
|
#define log_unit_info(unit, ...) log_unit_full(unit, LOG_INFO, 0, ##__VA_ARGS__)
|
|
#define log_unit_notice(unit, ...) log_unit_full(unit, LOG_NOTICE, 0, ##__VA_ARGS__)
|
|
#define log_unit_warning(unit, ...) log_unit_full(unit, LOG_WARNING, 0, ##__VA_ARGS__)
|
|
#define log_unit_error(unit, ...) log_unit_full(unit, LOG_ERR, 0, ##__VA_ARGS__)
|
|
|
|
#define log_unit_debug_errno(unit, error, ...) log_unit_full(unit, LOG_DEBUG, error, ##__VA_ARGS__)
|
|
#define log_unit_info_errno(unit, error, ...) log_unit_full(unit, LOG_INFO, error, ##__VA_ARGS__)
|
|
#define log_unit_notice_errno(unit, error, ...) log_unit_full(unit, LOG_NOTICE, error, ##__VA_ARGS__)
|
|
#define log_unit_warning_errno(unit, error, ...) log_unit_full(unit, LOG_WARNING, error, ##__VA_ARGS__)
|
|
#define log_unit_error_errno(unit, error, ...) log_unit_full(unit, LOG_ERR, error, ##__VA_ARGS__)
|
|
|
|
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, const char *source) {
|
|
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);
|
|
log_unit_debug(u, "added from %s.", source);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int context_parse_ntp_services_from_environment(Context *c) {
|
|
const char *env, *p;
|
|
int r;
|
|
|
|
assert(c);
|
|
|
|
env = getenv("SYSTEMD_TIMEDATED_NTP_SERVICES");
|
|
if (!env)
|
|
return 0;
|
|
|
|
log_debug("Using list of ntp services from environment variable $SYSTEMD_TIMEDATED_NTP_SERVICES=%s.", env);
|
|
|
|
for (p = env;;) {
|
|
_cleanup_free_ char *word = NULL;
|
|
|
|
r = extract_first_word(&p, &word, ":", 0);
|
|
if (r == 0)
|
|
break;
|
|
if (r == -ENOMEM)
|
|
return log_oom();
|
|
if (r < 0) {
|
|
log_error("Invalid syntax, ignoring: %s", env);
|
|
break;
|
|
}
|
|
|
|
r = context_add_ntp_service(c, word, "$SYSTEMD_TIMEDATED_NTP_SERVICES");
|
|
if (r < 0)
|
|
log_warning_errno(r, "Failed to add NTP service \"%s\", ignoring: %m", word);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int context_parse_ntp_services_from_disk(Context *c) {
|
|
_cleanup_strv_free_ char **files = NULL;
|
|
char **f;
|
|
int r;
|
|
|
|
r = conf_files_list_strv(&files, ".list", NULL, CONF_FILES_FILTER_MASKED, UNIT_LIST_DIRS);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to enumerate .list files: %m");
|
|
|
|
STRV_FOREACH(f, files) {
|
|
_cleanup_fclose_ FILE *file = NULL;
|
|
|
|
log_debug("Reading file '%s'", *f);
|
|
|
|
r = fopen_unlocked(*f, "re", &file);
|
|
if (r < 0) {
|
|
log_error_errno(r, "Failed to open %s, ignoring: %m", *f);
|
|
continue;
|
|
}
|
|
|
|
for (;;) {
|
|
_cleanup_free_ char *line = NULL;
|
|
const char *word;
|
|
|
|
r = read_line(file, LINE_MAX, &line);
|
|
if (r < 0) {
|
|
log_error_errno(r, "Failed to read %s, ignoring: %m", *f);
|
|
continue;
|
|
}
|
|
if (r == 0)
|
|
break;
|
|
|
|
word = strstrip(line);
|
|
if (isempty(word) || startswith("#", word))
|
|
continue;
|
|
|
|
r = context_add_ntp_service(c, word, *f);
|
|
if (r < 0)
|
|
log_warning_errno(r, "Failed to add NTP service \"%s\", ignoring: %m", word);
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int context_parse_ntp_services(Context *c) {
|
|
int r;
|
|
|
|
r = context_parse_ntp_services_from_environment(c);
|
|
if (r != 0)
|
|
return r;
|
|
|
|
return context_parse_ntp_services_from_disk(c);
|
|
}
|
|
|
|
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_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;
|
|
const char *source;
|
|
|
|
assert(c);
|
|
|
|
/* No timezone is very similar to UTC. Hence in either of these cases link the UTC file in. Except if
|
|
* it isn't installed, in which case we remove the symlink altogether. Since glibc defaults to an
|
|
* internal version of UTC in that case behaviour is mostly equivalent. We still prefer creating the
|
|
* symlink though, since things are more self explanatory then. */
|
|
|
|
if (isempty(c->zone) || streq(c->zone, "UTC")) {
|
|
|
|
if (access("/usr/share/zoneinfo/UTC", F_OK) < 0) {
|
|
|
|
if (unlink("/etc/localtime") < 0 && errno != ENOENT)
|
|
return -errno;
|
|
|
|
return 0;
|
|
}
|
|
|
|
source = "../usr/share/zoneinfo/UTC";
|
|
} else {
|
|
p = path_join("../usr/share/zoneinfo", c->zone);
|
|
if (!p)
|
|
return -ENOMEM;
|
|
|
|
source = p;
|
|
}
|
|
|
|
return symlink_atomic(source, "/etc/localtime");
|
|
}
|
|
|
|
static int context_write_data_local_rtc(Context *c) {
|
|
_cleanup_free_ char *s = NULL, *w = NULL;
|
|
int r;
|
|
|
|
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_unit_error_errno(u, 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) {
|
|
c->slot_job_removed = sd_bus_slot_unref(c->slot_job_removed);
|
|
|
|
(void) sd_bus_emit_properties_changed(sd_bus_message_get_bus(m),
|
|
"/org/freedesktop/timedate1", "org.freedesktop.timedate1", "NTP",
|
|
NULL);
|
|
}
|
|
|
|
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");
|
|
log_unit_full(u, r < 0 ? LOG_WARNING : LOG_DEBUG, r,
|
|
"%s unit: %m", start ? "Starting" : "Stopping");
|
|
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) {
|
|
log_unit_debug(u, "already %sd.", enable_disable(enable));
|
|
return 0;
|
|
}
|
|
|
|
log_unit_info(u, "%s unit.", enable ? "Enabling" : "Disabling");
|
|
|
|
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 = 0;
|
|
int r;
|
|
|
|
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.");
|
|
else if (r == -ENOENT)
|
|
log_debug("/dev/rtc not 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 or not installed 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 %s: %m", lrtc ? "local" : "UTC");
|
|
return sd_bus_error_set_errnof(error, r, "Failed to set RTC to %s: %m", lrtc ? "local" : "UTC");
|
|
}
|
|
|
|
/* 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;
|
|
const UnitStatusInfo *selected = NULL;
|
|
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) {
|
|
bool enable_this_one = !selected;
|
|
|
|
if (!streq(u->load_state, "loaded"))
|
|
continue;
|
|
|
|
r = unit_enable_or_disable(u, bus, error, enable_this_one);
|
|
if (r < 0)
|
|
/* If enablement failed, don't start this unit. */
|
|
enable_this_one = false;
|
|
|
|
r = unit_start_or_stop(u, bus, error, enable_this_one);
|
|
if (r < 0)
|
|
log_unit_warning_errno(u, r, "Failed to %s %sd NTP unit, ignoring: %m",
|
|
enable_this_one ? "start" : "stop",
|
|
enable_disable(enable_this_one));
|
|
if (enable_this_one)
|
|
selected = u;
|
|
}
|
|
else
|
|
LIST_FOREACH(units, u, c->units) {
|
|
if (!streq(u->load_state, "loaded"))
|
|
continue;
|
|
|
|
q = unit_enable_or_disable(u, bus, error, false);
|
|
if (q < 0)
|
|
r = q;
|
|
|
|
q = unit_start_or_stop(u, bus, error, false);
|
|
if (q < 0)
|
|
r = q;
|
|
}
|
|
|
|
if (r < 0)
|
|
return r;
|
|
if (enable && !selected)
|
|
return log_error_errno(SYNTHETIC_ERRNO(ENOENT), "No NTP service found to enable.");
|
|
|
|
if (slot)
|
|
c->slot_job_removed = TAKE_PTR(slot);
|
|
|
|
if (selected)
|
|
log_info("Set NTP to enabled (%s).", selected->name);
|
|
else
|
|
log_info("Set NTP to disabled.");
|
|
|
|
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);
|