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f401e48c LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2011 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
f401e48c LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
f401e48c | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
f401e48c LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
f401e48c LP |
22 | #include <errno.h> |
23 | #include <string.h> | |
24 | #include <unistd.h> | |
75683450 | 25 | #include <sys/capability.h> |
f401e48c | 26 | |
40ca29a1 LP |
27 | #include "sd-id128.h" |
28 | #include "sd-messages.h" | |
29 | #include "sd-event.h" | |
30 | #include "sd-bus.h" | |
31 | ||
f401e48c LP |
32 | #include "util.h" |
33 | #include "strv.h" | |
ad740100 | 34 | #include "def.h" |
24efb112 | 35 | #include "clock-util.h" |
b32d1675 | 36 | #include "conf-files.h" |
424a19f8 | 37 | #include "path-util.h" |
a5c32cff HH |
38 | #include "fileio-label.h" |
39 | #include "label.h" | |
40ca29a1 | 40 | #include "bus-util.h" |
5f86c1f4 | 41 | #include "bus-error.h" |
82d115d9 | 42 | #include "bus-errors.h" |
40ca29a1 | 43 | #include "event-util.h" |
f401e48c LP |
44 | |
45 | #define NULL_ADJTIME_UTC "0.0 0 0\n0\nUTC\n" | |
46 | #define NULL_ADJTIME_LOCAL "0.0 0 0\n0\nLOCAL\n" | |
47 | ||
5f86c1f4 LP |
48 | static BUS_ERROR_MAP_ELF_REGISTER const sd_bus_error_map timedated_errors[] = { |
49 | SD_BUS_ERROR_MAP("org.freedesktop.timedate1.NoNTPSupport", ENOTSUP), | |
50 | SD_BUS_ERROR_MAP_END | |
7358dc02 ZJS |
51 | }; |
52 | ||
40ca29a1 | 53 | typedef struct Context { |
d200735e MS |
54 | char *zone; |
55 | bool local_rtc; | |
82d115d9 KS |
56 | bool can_ntp; |
57 | bool use_ntp; | |
40ca29a1 LP |
58 | Hashmap *polkit_registry; |
59 | } Context; | |
f401e48c | 60 | |
36e34057 | 61 | static void context_free(Context *c) { |
40ca29a1 | 62 | assert(c); |
f401e48c | 63 | |
82d115d9 | 64 | free(c->zone); |
36e34057 | 65 | bus_verify_polkit_async_registry_free(c->polkit_registry); |
f401e48c LP |
66 | } |
67 | ||
40ca29a1 | 68 | static int context_read_data(Context *c) { |
424a19f8 | 69 | _cleanup_free_ char *t = NULL; |
40ca29a1 LP |
70 | int r; |
71 | ||
72 | assert(c); | |
f401e48c | 73 | |
92c4ef2d SL |
74 | r = readlink_malloc("/etc/localtime", &t); |
75 | if (r < 0) { | |
76 | if (r == -EINVAL) | |
07a062a7 | 77 | log_warning("/etc/localtime should be a symbolic link to a time zone data file in /usr/share/zoneinfo/."); |
92c4ef2d | 78 | else |
da927ba9 | 79 | log_warning_errno(r, "Failed to get target of /etc/localtime: %m"); |
92c4ef2d | 80 | } else { |
424a19f8 | 81 | const char *e; |
92c4ef2d | 82 | |
424a19f8 LP |
83 | e = path_startswith(t, "/usr/share/zoneinfo/"); |
84 | if (!e) | |
85 | e = path_startswith(t, "../usr/share/zoneinfo/"); | |
86 | ||
87 | if (!e) | |
07a062a7 | 88 | log_warning("/etc/localtime should be a symbolic link to a time zone data file in /usr/share/zoneinfo/."); |
92c4ef2d | 89 | else { |
40ca29a1 LP |
90 | c->zone = strdup(e); |
91 | if (!c->zone) | |
92c4ef2d SL |
92 | return log_oom(); |
93 | ||
94 | goto have_timezone; | |
95 | } | |
96 | } | |
97 | ||
92c4ef2d | 98 | have_timezone: |
40ca29a1 LP |
99 | if (isempty(c->zone)) { |
100 | free(c->zone); | |
101 | c->zone = NULL; | |
a724d2ed | 102 | } |
f401e48c | 103 | |
24efb112 | 104 | c->local_rtc = clock_is_localtime() > 0; |
f401e48c LP |
105 | |
106 | return 0; | |
107 | } | |
108 | ||
40ca29a1 | 109 | static int context_write_data_timezone(Context *c) { |
424a19f8 | 110 | _cleanup_free_ char *p = NULL; |
40ca29a1 LP |
111 | int r = 0; |
112 | ||
113 | assert(c); | |
e19a21a8 | 114 | |
40ca29a1 | 115 | if (isempty(c->zone)) { |
424a19f8 | 116 | if (unlink("/etc/localtime") < 0 && errno != ENOENT) |
f401e48c LP |
117 | r = -errno; |
118 | ||
f401e48c LP |
119 | return r; |
120 | } | |
121 | ||
40ca29a1 | 122 | p = strappend("../usr/share/zoneinfo/", c->zone); |
0d0f0c50 SL |
123 | if (!p) |
124 | return log_oom(); | |
f401e48c | 125 | |
424a19f8 | 126 | r = symlink_atomic(p, "/etc/localtime"); |
f401e48c | 127 | if (r < 0) |
424a19f8 | 128 | return r; |
f401e48c | 129 | |
f401e48c LP |
130 | return 0; |
131 | } | |
132 | ||
40ca29a1 | 133 | static int context_write_data_local_rtc(Context *c) { |
f401e48c | 134 | int r; |
7fd1b19b | 135 | _cleanup_free_ char *s = NULL, *w = NULL; |
f401e48c | 136 | |
40ca29a1 LP |
137 | assert(c); |
138 | ||
f401e48c LP |
139 | r = read_full_file("/etc/adjtime", &s, NULL); |
140 | if (r < 0) { | |
141 | if (r != -ENOENT) | |
142 | return r; | |
143 | ||
40ca29a1 | 144 | if (!c->local_rtc) |
f401e48c LP |
145 | return 0; |
146 | ||
147 | w = strdup(NULL_ADJTIME_LOCAL); | |
148 | if (!w) | |
149 | return -ENOMEM; | |
150 | } else { | |
151 | char *p, *e; | |
152 | size_t a, b; | |
153 | ||
154 | p = strchr(s, '\n'); | |
d257f05a | 155 | if (!p) |
f401e48c | 156 | return -EIO; |
f401e48c LP |
157 | |
158 | p = strchr(p+1, '\n'); | |
d257f05a | 159 | if (!p) |
f401e48c | 160 | return -EIO; |
f401e48c LP |
161 | |
162 | p++; | |
163 | e = strchr(p, '\n'); | |
d257f05a | 164 | if (!e) |
f401e48c | 165 | return -EIO; |
f401e48c LP |
166 | |
167 | a = p - s; | |
168 | b = strlen(e); | |
169 | ||
40ca29a1 | 170 | w = new(char, a + (c->local_rtc ? 5 : 3) + b + 1); |
d257f05a | 171 | if (!w) |
f401e48c | 172 | return -ENOMEM; |
f401e48c | 173 | |
40ca29a1 | 174 | *(char*) mempcpy(stpcpy(mempcpy(w, s, a), c->local_rtc ? "LOCAL" : "UTC"), e, b) = 0; |
f401e48c LP |
175 | |
176 | if (streq(w, NULL_ADJTIME_UTC)) { | |
d257f05a | 177 | if (unlink("/etc/adjtime") < 0) |
f401e48c LP |
178 | if (errno != ENOENT) |
179 | return -errno; | |
f401e48c LP |
180 | |
181 | return 0; | |
182 | } | |
183 | } | |
40ca29a1 | 184 | |
cc56fafe | 185 | mac_selinux_init("/etc"); |
d257f05a | 186 | return write_string_file_atomic_label("/etc/adjtime", w); |
f401e48c LP |
187 | } |
188 | ||
40ca29a1 | 189 | static int context_read_ntp(Context *c, sd_bus *bus) { |
b72ddf0f KS |
190 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
191 | sd_bus_message *reply = NULL; | |
192 | const char *s; | |
c5f0532f LP |
193 | int r; |
194 | ||
40ca29a1 | 195 | assert(c); |
c5f0532f LP |
196 | assert(bus); |
197 | ||
b72ddf0f KS |
198 | r = sd_bus_call_method( |
199 | bus, | |
200 | "org.freedesktop.systemd1", | |
201 | "/org/freedesktop/systemd1", | |
202 | "org.freedesktop.systemd1.Manager", | |
203 | "GetUnitFileState", | |
204 | &error, | |
205 | &reply, | |
206 | "s", | |
207 | "systemd-timesyncd.service"); | |
2aa4c315 | 208 | |
b72ddf0f KS |
209 | if (r < 0) { |
210 | if (sd_bus_error_has_name(&error, SD_BUS_ERROR_FILE_NOT_FOUND) || | |
211 | sd_bus_error_has_name(&error, "org.freedesktop.systemd1.LoadFailed") || | |
212 | sd_bus_error_has_name(&error, "org.freedesktop.systemd1.NoSuchUnit")) | |
213 | return 0; | |
2aa4c315 | 214 | |
b72ddf0f KS |
215 | return r; |
216 | } | |
c5f0532f | 217 | |
b72ddf0f KS |
218 | r = sd_bus_message_read(reply, "s", &s); |
219 | if (r < 0) | |
220 | return r; | |
40ca29a1 | 221 | |
b72ddf0f KS |
222 | c->can_ntp = true; |
223 | c->use_ntp = STR_IN_SET(s, "enabled", "enabled-runtime"); | |
c5f0532f | 224 | |
40ca29a1 | 225 | return 0; |
c5f0532f LP |
226 | } |
227 | ||
40ca29a1 | 228 | static int context_start_ntp(Context *c, sd_bus *bus, sd_bus_error *error) { |
c5f0532f LP |
229 | int r; |
230 | ||
40ca29a1 | 231 | assert(c); |
c5f0532f LP |
232 | assert(bus); |
233 | assert(error); | |
234 | ||
b72ddf0f KS |
235 | if (c->use_ntp) |
236 | r = sd_bus_call_method( | |
237 | bus, | |
238 | "org.freedesktop.systemd1", | |
239 | "/org/freedesktop/systemd1", | |
240 | "org.freedesktop.systemd1.Manager", | |
241 | "StartUnit", | |
242 | error, | |
243 | NULL, | |
244 | "ss", | |
245 | "systemd-timesyncd.service", | |
246 | "replace"); | |
247 | else | |
248 | r = sd_bus_call_method( | |
249 | bus, | |
250 | "org.freedesktop.systemd1", | |
251 | "/org/freedesktop/systemd1", | |
252 | "org.freedesktop.systemd1.Manager", | |
253 | "StopUnit", | |
254 | error, | |
255 | NULL, | |
256 | "ss", | |
257 | "systemd-timesyncd.service", | |
258 | "replace"); | |
c5f0532f | 259 | |
b72ddf0f KS |
260 | if (r < 0) { |
261 | if (sd_bus_error_has_name(error, SD_BUS_ERROR_FILE_NOT_FOUND) || | |
262 | sd_bus_error_has_name(error, "org.freedesktop.systemd1.LoadFailed") || | |
7358dc02 ZJS |
263 | sd_bus_error_has_name(error, "org.freedesktop.systemd1.NoSuchUnit")) |
264 | return sd_bus_error_set_const(error, "org.freedesktop.timedate1.NoNTPSupport", "NTP not supported."); | |
ac7019f3 | 265 | |
b72ddf0f | 266 | return r; |
c5f0532f LP |
267 | } |
268 | ||
b72ddf0f | 269 | return 0; |
c5f0532f LP |
270 | } |
271 | ||
40ca29a1 | 272 | static int context_enable_ntp(Context*c, sd_bus *bus, sd_bus_error *error) { |
c5f0532f | 273 | int r; |
c5f0532f | 274 | |
40ca29a1 | 275 | assert(c); |
c5f0532f LP |
276 | assert(bus); |
277 | assert(error); | |
278 | ||
b72ddf0f | 279 | if (c->use_ntp) |
40ca29a1 LP |
280 | r = sd_bus_call_method( |
281 | bus, | |
ac7019f3 LP |
282 | "org.freedesktop.systemd1", |
283 | "/org/freedesktop/systemd1", | |
284 | "org.freedesktop.systemd1.Manager", | |
b72ddf0f | 285 | "EnableUnitFiles", |
40ca29a1 LP |
286 | error, |
287 | NULL, | |
b72ddf0f KS |
288 | "asbb", 1, |
289 | "systemd-timesyncd.service", | |
290 | false, true); | |
291 | else | |
292 | r = sd_bus_call_method( | |
293 | bus, | |
294 | "org.freedesktop.systemd1", | |
295 | "/org/freedesktop/systemd1", | |
296 | "org.freedesktop.systemd1.Manager", | |
297 | "DisableUnitFiles", | |
298 | error, | |
299 | NULL, | |
300 | "asb", 1, | |
301 | "systemd-timesyncd.service", | |
302 | false); | |
ac7019f3 | 303 | |
b72ddf0f | 304 | if (r < 0) { |
7358dc02 ZJS |
305 | if (sd_bus_error_has_name(error, SD_BUS_ERROR_FILE_NOT_FOUND)) |
306 | return sd_bus_error_set_const(error, "org.freedesktop.timedate1.NoNTPSupport", "NTP not supported."); | |
b72ddf0f KS |
307 | |
308 | return r; | |
c5f0532f LP |
309 | } |
310 | ||
b72ddf0f KS |
311 | r = sd_bus_call_method( |
312 | bus, | |
313 | "org.freedesktop.systemd1", | |
314 | "/org/freedesktop/systemd1", | |
315 | "org.freedesktop.systemd1.Manager", | |
316 | "Reload", | |
317 | error, | |
318 | NULL, | |
319 | NULL); | |
320 | if (r < 0) | |
321 | return r; | |
322 | ||
323 | return 0; | |
40ca29a1 | 324 | } |
c5f0532f | 325 | |
6fc60278 LP |
326 | static int property_get_rtc_time( |
327 | sd_bus *bus, | |
328 | const char *path, | |
329 | const char *interface, | |
330 | const char *property, | |
331 | sd_bus_message *reply, | |
ebcf1f97 LP |
332 | void *userdata, |
333 | sd_bus_error *error) { | |
6fc60278 LP |
334 | |
335 | struct tm tm; | |
336 | usec_t t; | |
337 | int r; | |
338 | ||
339 | zero(tm); | |
60989612 | 340 | r = clock_get_hwclock(&tm); |
88e262b6 | 341 | if (r == -EBUSY) { |
07a062a7 | 342 | log_warning("/dev/rtc is busy. Is somebody keeping it open continuously? That's not a good idea... Returning a bogus RTC timestamp."); |
88e262b6 | 343 | t = 0; |
fe2b58a4 | 344 | } else if (r == -ENOENT) { |
07a062a7 | 345 | log_debug("/dev/rtc not found."); |
fe2b58a4 | 346 | t = 0; /* no RTC found */ |
ebcf1f97 LP |
347 | } else if (r < 0) |
348 | return sd_bus_error_set_errnof(error, r, "Failed to read RTC: %s", strerror(-r)); | |
349 | else | |
2f6a5907 | 350 | t = (usec_t) timegm(&tm) * USEC_PER_SEC; |
6fc60278 | 351 | |
ebcf1f97 | 352 | return sd_bus_message_append(reply, "t", t); |
6fc60278 LP |
353 | } |
354 | ||
03cc26dd LP |
355 | static int property_get_time( |
356 | sd_bus *bus, | |
357 | const char *path, | |
358 | const char *interface, | |
359 | const char *property, | |
360 | sd_bus_message *reply, | |
ebcf1f97 LP |
361 | void *userdata, |
362 | sd_bus_error *error) { | |
03cc26dd | 363 | |
ebcf1f97 | 364 | return sd_bus_message_append(reply, "t", now(CLOCK_REALTIME)); |
03cc26dd LP |
365 | } |
366 | ||
367 | static int property_get_ntp_sync( | |
368 | sd_bus *bus, | |
369 | const char *path, | |
370 | const char *interface, | |
371 | const char *property, | |
372 | sd_bus_message *reply, | |
ebcf1f97 LP |
373 | void *userdata, |
374 | sd_bus_error *error) { | |
03cc26dd | 375 | |
ebcf1f97 | 376 | return sd_bus_message_append(reply, "b", ntp_synced()); |
03cc26dd LP |
377 | } |
378 | ||
ebcf1f97 | 379 | static int method_set_timezone(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) { |
40ca29a1 LP |
380 | Context *c = userdata; |
381 | const char *z; | |
102d8f81 | 382 | int interactive; |
40ca29a1 LP |
383 | char *t; |
384 | int r; | |
c5f0532f | 385 | |
7e9cf16c LP |
386 | assert(bus); |
387 | assert(m); | |
388 | assert(c); | |
389 | ||
40ca29a1 LP |
390 | r = sd_bus_message_read(m, "sb", &z, &interactive); |
391 | if (r < 0) | |
ebcf1f97 | 392 | return r; |
c5f0532f | 393 | |
75683450 | 394 | if (!timezone_is_valid(z)) |
ebcf1f97 | 395 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid time zone '%s'", z); |
ac7019f3 | 396 | |
40ca29a1 | 397 | if (streq_ptr(z, c->zone)) |
df2d202e | 398 | return sd_bus_reply_method_return(m, NULL); |
c5f0532f | 399 | |
f3885791 | 400 | r = bus_verify_polkit_async(m, CAP_SYS_TIME, "org.freedesktop.timedate1.set-timezone", interactive, &c->polkit_registry, error); |
40ca29a1 | 401 | if (r < 0) |
ebcf1f97 | 402 | return r; |
40ca29a1 | 403 | if (r == 0) |
6fc60278 | 404 | return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ |
6ffe5e37 | 405 | |
40ca29a1 LP |
406 | t = strdup(z); |
407 | if (!t) | |
ebcf1f97 | 408 | return -ENOMEM; |
6ffe5e37 | 409 | |
40ca29a1 LP |
410 | free(c->zone); |
411 | c->zone = t; | |
6ffe5e37 | 412 | |
40ca29a1 LP |
413 | /* 1. Write new configuration file */ |
414 | r = context_write_data_timezone(c); | |
415 | if (r < 0) { | |
da927ba9 | 416 | log_error_errno(r, "Failed to set time zone: %m"); |
07a062a7 | 417 | return sd_bus_error_set_errnof(error, r, "Failed to set time zone: %s", strerror(-r)); |
40ca29a1 | 418 | } |
6ffe5e37 | 419 | |
40ca29a1 | 420 | /* 2. Tell the kernel our timezone */ |
24efb112 | 421 | clock_set_timezone(NULL); |
6ffe5e37 | 422 | |
40ca29a1 LP |
423 | if (c->local_rtc) { |
424 | struct timespec ts; | |
425 | struct tm *tm; | |
c5f0532f | 426 | |
40ca29a1 LP |
427 | /* 3. Sync RTC from system clock, with the new delta */ |
428 | assert_se(clock_gettime(CLOCK_REALTIME, &ts) == 0); | |
429 | assert_se(tm = localtime(&ts.tv_sec)); | |
60989612 | 430 | clock_set_hwclock(tm); |
40ca29a1 | 431 | } |
c5f0532f | 432 | |
40ca29a1 | 433 | log_struct(LOG_INFO, |
e2cc6eca | 434 | LOG_MESSAGE_ID(SD_MESSAGE_TIMEZONE_CHANGE), |
40ca29a1 | 435 | "TIMEZONE=%s", c->zone, |
e2cc6eca | 436 | LOG_MESSAGE("Changed time zone to '%s'.", c->zone), |
40ca29a1 | 437 | NULL); |
c5f0532f | 438 | |
40ca29a1 | 439 | sd_bus_emit_properties_changed(bus, "/org/freedesktop/timedate1", "org.freedesktop.timedate1", "Timezone", NULL); |
c5f0532f | 440 | |
df2d202e | 441 | return sd_bus_reply_method_return(m, NULL); |
c5f0532f LP |
442 | } |
443 | ||
ebcf1f97 | 444 | static int method_set_local_rtc(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) { |
102d8f81 | 445 | int lrtc, fix_system, interactive; |
40ca29a1 LP |
446 | Context *c = userdata; |
447 | struct timespec ts; | |
f401e48c LP |
448 | int r; |
449 | ||
40ca29a1 LP |
450 | assert(bus); |
451 | assert(m); | |
452 | assert(c); | |
f401e48c | 453 | |
40ca29a1 LP |
454 | r = sd_bus_message_read(m, "bbb", &lrtc, &fix_system, &interactive); |
455 | if (r < 0) | |
ebcf1f97 | 456 | return r; |
f401e48c | 457 | |
40ca29a1 | 458 | if (lrtc == c->local_rtc) |
df2d202e | 459 | return sd_bus_reply_method_return(m, NULL); |
f401e48c | 460 | |
f3885791 | 461 | r = bus_verify_polkit_async(m, CAP_SYS_TIME, "org.freedesktop.timedate1.set-local-rtc", interactive, &c->polkit_registry, error); |
40ca29a1 | 462 | if (r < 0) |
ebcf1f97 | 463 | return r; |
40ca29a1 LP |
464 | if (r == 0) |
465 | return 1; | |
f401e48c | 466 | |
40ca29a1 | 467 | c->local_rtc = lrtc; |
f401e48c | 468 | |
40ca29a1 LP |
469 | /* 1. Write new configuration file */ |
470 | r = context_write_data_local_rtc(c); | |
471 | if (r < 0) { | |
da927ba9 | 472 | log_error_errno(r, "Failed to set RTC to local/UTC: %m"); |
ebcf1f97 | 473 | return sd_bus_error_set_errnof(error, r, "Failed to set RTC to local/UTC: %s", strerror(-r)); |
40ca29a1 | 474 | } |
f401e48c | 475 | |
40ca29a1 | 476 | /* 2. Tell the kernel our timezone */ |
24efb112 | 477 | clock_set_timezone(NULL); |
f401e48c | 478 | |
40ca29a1 LP |
479 | /* 3. Synchronize clocks */ |
480 | assert_se(clock_gettime(CLOCK_REALTIME, &ts) == 0); | |
f401e48c | 481 | |
40ca29a1 LP |
482 | if (fix_system) { |
483 | struct tm tm; | |
f401e48c | 484 | |
40ca29a1 LP |
485 | /* Sync system clock from RTC; first, |
486 | * initialize the timezone fields of | |
487 | * struct tm. */ | |
488 | if (c->local_rtc) | |
489 | tm = *localtime(&ts.tv_sec); | |
490 | else | |
491 | tm = *gmtime(&ts.tv_sec); | |
72edcff5 | 492 | |
40ca29a1 LP |
493 | /* Override the main fields of |
494 | * struct tm, but not the timezone | |
495 | * fields */ | |
60989612 | 496 | if (clock_get_hwclock(&tm) >= 0) { |
2076cf88 | 497 | |
40ca29a1 LP |
498 | /* And set the system clock |
499 | * with this */ | |
500 | if (c->local_rtc) | |
501 | ts.tv_sec = mktime(&tm); | |
502 | else | |
503 | ts.tv_sec = timegm(&tm); | |
2076cf88 | 504 | |
40ca29a1 | 505 | clock_settime(CLOCK_REALTIME, &ts); |
f401e48c LP |
506 | } |
507 | ||
40ca29a1 LP |
508 | } else { |
509 | struct tm *tm; | |
f401e48c | 510 | |
40ca29a1 LP |
511 | /* Sync RTC from system clock */ |
512 | if (c->local_rtc) | |
513 | tm = localtime(&ts.tv_sec); | |
514 | else | |
515 | tm = gmtime(&ts.tv_sec); | |
2076cf88 | 516 | |
60989612 | 517 | clock_set_hwclock(tm); |
40ca29a1 | 518 | } |
2076cf88 | 519 | |
40ca29a1 | 520 | log_info("RTC configured to %s time.", c->local_rtc ? "local" : "UTC"); |
2076cf88 | 521 | |
40ca29a1 | 522 | sd_bus_emit_properties_changed(bus, "/org/freedesktop/timedate1", "org.freedesktop.timedate1", "LocalRTC", NULL); |
2076cf88 | 523 | |
df2d202e | 524 | return sd_bus_reply_method_return(m, NULL); |
40ca29a1 | 525 | } |
2076cf88 | 526 | |
ebcf1f97 | 527 | static int method_set_time(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) { |
102d8f81 | 528 | int relative, interactive; |
40ca29a1 LP |
529 | Context *c = userdata; |
530 | int64_t utc; | |
531 | struct timespec ts; | |
532 | struct tm* tm; | |
533 | int r; | |
2076cf88 | 534 | |
40ca29a1 LP |
535 | assert(bus); |
536 | assert(m); | |
537 | assert(c); | |
2076cf88 | 538 | |
82d115d9 KS |
539 | if (c->use_ntp) |
540 | return sd_bus_error_setf(error, BUS_ERROR_AUTOMATIC_TIME_SYNC_ENABLED, "Automatic time synchronization is enabled"); | |
541 | ||
40ca29a1 LP |
542 | r = sd_bus_message_read(m, "xbb", &utc, &relative, &interactive); |
543 | if (r < 0) | |
ebcf1f97 | 544 | return r; |
2076cf88 | 545 | |
40ca29a1 | 546 | if (!relative && utc <= 0) |
ebcf1f97 | 547 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid absolute time"); |
2076cf88 | 548 | |
40ca29a1 | 549 | if (relative && utc == 0) |
df2d202e | 550 | return sd_bus_reply_method_return(m, NULL); |
2076cf88 | 551 | |
40ca29a1 LP |
552 | if (relative) { |
553 | usec_t n, x; | |
f401e48c | 554 | |
40ca29a1 LP |
555 | n = now(CLOCK_REALTIME); |
556 | x = n + utc; | |
f401e48c | 557 | |
40ca29a1 LP |
558 | if ((utc > 0 && x < n) || |
559 | (utc < 0 && x > n)) | |
ebcf1f97 | 560 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Time value overflow"); |
f401e48c | 561 | |
40ca29a1 LP |
562 | timespec_store(&ts, x); |
563 | } else | |
564 | timespec_store(&ts, (usec_t) utc); | |
2076cf88 | 565 | |
f3885791 | 566 | r = bus_verify_polkit_async(m, CAP_SYS_TIME, "org.freedesktop.timedate1.set-time", interactive, &c->polkit_registry, error); |
40ca29a1 | 567 | if (r < 0) |
ebcf1f97 | 568 | return r; |
40ca29a1 LP |
569 | if (r == 0) |
570 | return 1; | |
571 | ||
572 | /* Set system clock */ | |
573 | if (clock_settime(CLOCK_REALTIME, &ts) < 0) { | |
56f64d95 | 574 | log_error_errno(errno, "Failed to set local time: %m"); |
ebcf1f97 | 575 | return sd_bus_error_set_errnof(error, errno, "Failed to set local time: %m"); |
40ca29a1 | 576 | } |
2076cf88 | 577 | |
40ca29a1 LP |
578 | /* Sync down to RTC */ |
579 | if (c->local_rtc) | |
580 | tm = localtime(&ts.tv_sec); | |
581 | else | |
582 | tm = gmtime(&ts.tv_sec); | |
60989612 | 583 | clock_set_hwclock(tm); |
f401e48c | 584 | |
40ca29a1 | 585 | log_struct(LOG_INFO, |
e2cc6eca | 586 | LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE), |
de0671ee | 587 | "REALTIME="USEC_FMT, timespec_load(&ts), |
e2cc6eca | 588 | LOG_MESSAGE("Changed local time to %s", ctime(&ts.tv_sec)), |
40ca29a1 | 589 | NULL); |
f401e48c | 590 | |
df2d202e | 591 | return sd_bus_reply_method_return(m, NULL); |
40ca29a1 | 592 | } |
f401e48c | 593 | |
ebcf1f97 | 594 | static int method_set_ntp(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) { |
102d8f81 | 595 | int ntp, interactive; |
40ca29a1 LP |
596 | Context *c = userdata; |
597 | int r; | |
f401e48c | 598 | |
40ca29a1 LP |
599 | r = sd_bus_message_read(m, "bb", &ntp, &interactive); |
600 | if (r < 0) | |
ebcf1f97 | 601 | return r; |
f401e48c | 602 | |
102d8f81 | 603 | if ((bool)ntp == c->use_ntp) |
df2d202e | 604 | return sd_bus_reply_method_return(m, NULL); |
f401e48c | 605 | |
f3885791 | 606 | r = bus_verify_polkit_async(m, CAP_SYS_TIME, "org.freedesktop.timedate1.set-ntp", interactive, &c->polkit_registry, error); |
40ca29a1 | 607 | if (r < 0) |
ebcf1f97 | 608 | return r; |
40ca29a1 LP |
609 | if (r == 0) |
610 | return 1; | |
f401e48c | 611 | |
40ca29a1 | 612 | c->use_ntp = ntp; |
f401e48c | 613 | |
ebcf1f97 | 614 | r = context_enable_ntp(c, bus, error); |
40ca29a1 | 615 | if (r < 0) |
ebcf1f97 | 616 | return r; |
40ca29a1 | 617 | |
ebcf1f97 | 618 | r = context_start_ntp(c, bus, error); |
40ca29a1 | 619 | if (r < 0) |
ebcf1f97 | 620 | return r; |
f401e48c | 621 | |
40ca29a1 | 622 | log_info("Set NTP to %s", c->use_ntp ? "enabled" : "disabled"); |
f401e48c | 623 | |
40ca29a1 | 624 | sd_bus_emit_properties_changed(bus, "/org/freedesktop/timedate1", "org.freedesktop.timedate1", "NTP", NULL); |
f401e48c | 625 | |
df2d202e | 626 | return sd_bus_reply_method_return(m, NULL); |
f401e48c LP |
627 | } |
628 | ||
40ca29a1 LP |
629 | static const sd_bus_vtable timedate_vtable[] = { |
630 | SD_BUS_VTABLE_START(0), | |
631 | SD_BUS_PROPERTY("Timezone", "s", NULL, offsetof(Context, zone), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), | |
82d115d9 KS |
632 | SD_BUS_PROPERTY("LocalRTC", "b", bus_property_get_bool, offsetof(Context, local_rtc), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
633 | SD_BUS_PROPERTY("CanNTP", "b", bus_property_get_bool, offsetof(Context, can_ntp), 0), | |
634 | SD_BUS_PROPERTY("NTP", "b", bus_property_get_bool, offsetof(Context, use_ntp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), | |
03cc26dd LP |
635 | SD_BUS_PROPERTY("NTPSynchronized", "b", property_get_ntp_sync, 0, 0), |
636 | SD_BUS_PROPERTY("TimeUSec", "t", property_get_time, 0, 0), | |
6fc60278 | 637 | SD_BUS_PROPERTY("RTCTimeUSec", "t", property_get_rtc_time, 0, 0), |
adacb957 LP |
638 | SD_BUS_METHOD("SetTime", "xbb", NULL, method_set_time, SD_BUS_VTABLE_UNPRIVILEGED), |
639 | SD_BUS_METHOD("SetTimezone", "sb", NULL, method_set_timezone, SD_BUS_VTABLE_UNPRIVILEGED), | |
640 | SD_BUS_METHOD("SetLocalRTC", "bbb", NULL, method_set_local_rtc, SD_BUS_VTABLE_UNPRIVILEGED), | |
641 | SD_BUS_METHOD("SetNTP", "bb", NULL, method_set_ntp, SD_BUS_VTABLE_UNPRIVILEGED), | |
40ca29a1 LP |
642 | SD_BUS_VTABLE_END, |
643 | }; | |
644 | ||
645 | static int connect_bus(Context *c, sd_event *event, sd_bus **_bus) { | |
24996861 | 646 | _cleanup_bus_close_unref_ sd_bus *bus = NULL; |
f401e48c LP |
647 | int r; |
648 | ||
40ca29a1 LP |
649 | assert(c); |
650 | assert(event); | |
f401e48c LP |
651 | assert(_bus); |
652 | ||
76b54375 | 653 | r = sd_bus_default_system(&bus); |
f647962d MS |
654 | if (r < 0) |
655 | return log_error_errno(r, "Failed to get system bus connection: %m"); | |
f401e48c | 656 | |
19befb2d | 657 | r = sd_bus_add_object_vtable(bus, NULL, "/org/freedesktop/timedate1", "org.freedesktop.timedate1", timedate_vtable, c); |
f647962d MS |
658 | if (r < 0) |
659 | return log_error_errno(r, "Failed to register object: %m"); | |
f401e48c | 660 | |
5bb658a1 | 661 | r = sd_bus_request_name(bus, "org.freedesktop.timedate1", 0); |
f647962d MS |
662 | if (r < 0) |
663 | return log_error_errno(r, "Failed to register name: %m"); | |
add10b5a | 664 | |
40ca29a1 | 665 | r = sd_bus_attach_event(bus, event, 0); |
f647962d MS |
666 | if (r < 0) |
667 | return log_error_errno(r, "Failed to attach bus to event loop: %m"); | |
f401e48c | 668 | |
40ca29a1 LP |
669 | *_bus = bus; |
670 | bus = NULL; | |
f401e48c | 671 | |
40ca29a1 | 672 | return 0; |
f401e48c LP |
673 | } |
674 | ||
675 | int main(int argc, char *argv[]) { | |
82d115d9 | 676 | Context context = {}; |
40ca29a1 | 677 | _cleanup_event_unref_ sd_event *event = NULL; |
24996861 | 678 | _cleanup_bus_close_unref_ sd_bus *bus = NULL; |
f401e48c | 679 | int r; |
f401e48c LP |
680 | |
681 | log_set_target(LOG_TARGET_AUTO); | |
682 | log_parse_environment(); | |
683 | log_open(); | |
684 | ||
4c12626c LP |
685 | umask(0022); |
686 | ||
f401e48c LP |
687 | if (argc != 1) { |
688 | log_error("This program takes no arguments."); | |
689 | r = -EINVAL; | |
690 | goto finish; | |
691 | } | |
692 | ||
afc6adb5 | 693 | r = sd_event_default(&event); |
f401e48c | 694 | if (r < 0) { |
da927ba9 | 695 | log_error_errno(r, "Failed to allocate event loop: %m"); |
f401e48c LP |
696 | goto finish; |
697 | } | |
698 | ||
cde93897 LP |
699 | sd_event_set_watchdog(event, true); |
700 | ||
40ca29a1 | 701 | r = connect_bus(&context, event, &bus); |
f401e48c LP |
702 | if (r < 0) |
703 | goto finish; | |
704 | ||
40ca29a1 | 705 | r = context_read_data(&context); |
c5f0532f | 706 | if (r < 0) { |
da927ba9 | 707 | log_error_errno(r, "Failed to read time zone data: %m"); |
c5f0532f LP |
708 | goto finish; |
709 | } | |
710 | ||
40ca29a1 LP |
711 | r = context_read_ntp(&context, bus); |
712 | if (r < 0) { | |
da927ba9 | 713 | log_error_errno(r, "Failed to determine whether NTP is enabled: %m"); |
40ca29a1 LP |
714 | goto finish; |
715 | } | |
ad740100 | 716 | |
37224a5f | 717 | r = bus_event_loop_with_idle(event, bus, "org.freedesktop.timedate1", DEFAULT_EXIT_USEC, NULL, NULL); |
40ca29a1 | 718 | if (r < 0) { |
da927ba9 | 719 | log_error_errno(r, "Failed to run event loop: %m"); |
40ca29a1 | 720 | goto finish; |
ad740100 | 721 | } |
f401e48c | 722 | |
f401e48c | 723 | finish: |
36e34057 | 724 | context_free(&context); |
f401e48c LP |
725 | |
726 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
727 | } |