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9a98c7a1 LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
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 | |
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 | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
9a98c7a1 | 22 | #include <string.h> |
77ff2de9 | 23 | #include <sys/timerfd.h> |
07630cea | 24 | #include <sys/timex.h> |
9a98c7a1 | 25 | |
b5efdb8a | 26 | #include "alloc-util.h" |
3ffd4af2 | 27 | #include "fd-util.h" |
0d39fa9c | 28 | #include "fileio.h" |
f4f15635 | 29 | #include "fs-util.h" |
5c904ba5 | 30 | #include "path-util.h" |
07630cea | 31 | #include "string-util.h" |
75683450 | 32 | #include "strv.h" |
07630cea | 33 | #include "time-util.h" |
3ffd4af2 | 34 | #include "util.h" |
9a98c7a1 LP |
35 | |
36 | usec_t now(clockid_t clock_id) { | |
37 | struct timespec ts; | |
38 | ||
39 | assert_se(clock_gettime(clock_id, &ts) == 0); | |
40 | ||
41 | return timespec_load(&ts); | |
42 | } | |
43 | ||
45d7a8bb LP |
44 | nsec_t now_nsec(clockid_t clock_id) { |
45 | struct timespec ts; | |
46 | ||
47 | assert_se(clock_gettime(clock_id, &ts) == 0); | |
48 | ||
49 | return timespec_load_nsec(&ts); | |
50 | } | |
51 | ||
9a98c7a1 LP |
52 | dual_timestamp* dual_timestamp_get(dual_timestamp *ts) { |
53 | assert(ts); | |
54 | ||
55 | ts->realtime = now(CLOCK_REALTIME); | |
56 | ts->monotonic = now(CLOCK_MONOTONIC); | |
57 | ||
58 | return ts; | |
59 | } | |
60 | ||
61 | dual_timestamp* dual_timestamp_from_realtime(dual_timestamp *ts, usec_t u) { | |
62 | int64_t delta; | |
63 | assert(ts); | |
64 | ||
75a5f1d8 LP |
65 | if (u == USEC_INFINITY || u <= 0) { |
66 | ts->realtime = ts->monotonic = u; | |
cae0c5e0 LP |
67 | return ts; |
68 | } | |
69 | ||
9a98c7a1 LP |
70 | ts->realtime = u; |
71 | ||
75a5f1d8 LP |
72 | delta = (int64_t) now(CLOCK_REALTIME) - (int64_t) u; |
73 | ts->monotonic = now(CLOCK_MONOTONIC); | |
9a98c7a1 | 74 | |
75a5f1d8 LP |
75 | if ((int64_t) ts->monotonic > delta) |
76 | ts->monotonic -= delta; | |
77 | else | |
78 | ts->monotonic = 0; | |
9a98c7a1 LP |
79 | |
80 | return ts; | |
81 | } | |
82 | ||
cae0c5e0 LP |
83 | dual_timestamp* dual_timestamp_from_monotonic(dual_timestamp *ts, usec_t u) { |
84 | int64_t delta; | |
85 | assert(ts); | |
86 | ||
3a43da28 KS |
87 | if (u == USEC_INFINITY) { |
88 | ts->realtime = ts->monotonic = USEC_INFINITY; | |
cae0c5e0 LP |
89 | return ts; |
90 | } | |
91 | ||
92 | ts->monotonic = u; | |
93 | delta = (int64_t) now(CLOCK_MONOTONIC) - (int64_t) u; | |
94 | ||
95 | ts->realtime = now(CLOCK_REALTIME); | |
96 | if ((int64_t) ts->realtime > delta) | |
97 | ts->realtime -= delta; | |
98 | else | |
99 | ts->realtime = 0; | |
100 | ||
101 | return ts; | |
102 | } | |
103 | ||
fbe55073 LP |
104 | dual_timestamp* dual_timestamp_from_boottime_or_monotonic(dual_timestamp *ts, usec_t u) { |
105 | int64_t delta; | |
106 | ||
107 | if (u == USEC_INFINITY) { | |
108 | ts->realtime = ts->monotonic = USEC_INFINITY; | |
109 | return ts; | |
110 | } | |
111 | ts->realtime = now(CLOCK_REALTIME); | |
112 | ts->monotonic = now(CLOCK_MONOTONIC); | |
113 | ||
114 | delta = (int64_t) now(clock_boottime_or_monotonic()) - (int64_t) u; | |
115 | ||
116 | if ((int64_t) ts->realtime > delta) | |
117 | ts->realtime -= delta; | |
118 | else | |
119 | ts->realtime = 0; | |
120 | ||
121 | if ((int64_t) ts->monotonic > delta) | |
122 | ts->monotonic -= delta; | |
123 | else | |
124 | ts->monotonic = 0; | |
125 | ||
126 | return ts; | |
127 | } | |
128 | ||
129 | ||
9a98c7a1 LP |
130 | usec_t timespec_load(const struct timespec *ts) { |
131 | assert(ts); | |
132 | ||
133 | if (ts->tv_sec == (time_t) -1 && | |
134 | ts->tv_nsec == (long) -1) | |
3a43da28 | 135 | return USEC_INFINITY; |
9a98c7a1 LP |
136 | |
137 | if ((usec_t) ts->tv_sec > (UINT64_MAX - (ts->tv_nsec / NSEC_PER_USEC)) / USEC_PER_SEC) | |
3a43da28 | 138 | return USEC_INFINITY; |
9a98c7a1 LP |
139 | |
140 | return | |
141 | (usec_t) ts->tv_sec * USEC_PER_SEC + | |
142 | (usec_t) ts->tv_nsec / NSEC_PER_USEC; | |
143 | } | |
144 | ||
45d7a8bb LP |
145 | nsec_t timespec_load_nsec(const struct timespec *ts) { |
146 | assert(ts); | |
147 | ||
148 | if (ts->tv_sec == (time_t) -1 && | |
149 | ts->tv_nsec == (long) -1) | |
150 | return NSEC_INFINITY; | |
151 | ||
152 | return | |
153 | (nsec_t) ts->tv_sec * NSEC_PER_SEC + | |
154 | (nsec_t) ts->tv_nsec; | |
155 | } | |
156 | ||
9a98c7a1 LP |
157 | struct timespec *timespec_store(struct timespec *ts, usec_t u) { |
158 | assert(ts); | |
159 | ||
3a43da28 | 160 | if (u == USEC_INFINITY) { |
9a98c7a1 LP |
161 | ts->tv_sec = (time_t) -1; |
162 | ts->tv_nsec = (long) -1; | |
163 | return ts; | |
164 | } | |
165 | ||
166 | ts->tv_sec = (time_t) (u / USEC_PER_SEC); | |
167 | ts->tv_nsec = (long int) ((u % USEC_PER_SEC) * NSEC_PER_USEC); | |
168 | ||
169 | return ts; | |
170 | } | |
171 | ||
172 | usec_t timeval_load(const struct timeval *tv) { | |
173 | assert(tv); | |
174 | ||
175 | if (tv->tv_sec == (time_t) -1 && | |
176 | tv->tv_usec == (suseconds_t) -1) | |
3a43da28 | 177 | return USEC_INFINITY; |
9a98c7a1 LP |
178 | |
179 | if ((usec_t) tv->tv_sec > (UINT64_MAX - tv->tv_usec) / USEC_PER_SEC) | |
3a43da28 | 180 | return USEC_INFINITY; |
9a98c7a1 LP |
181 | |
182 | return | |
183 | (usec_t) tv->tv_sec * USEC_PER_SEC + | |
184 | (usec_t) tv->tv_usec; | |
185 | } | |
186 | ||
187 | struct timeval *timeval_store(struct timeval *tv, usec_t u) { | |
188 | assert(tv); | |
189 | ||
3a43da28 | 190 | if (u == USEC_INFINITY) { |
9a98c7a1 LP |
191 | tv->tv_sec = (time_t) -1; |
192 | tv->tv_usec = (suseconds_t) -1; | |
4d89874a ZJS |
193 | } else { |
194 | tv->tv_sec = (time_t) (u / USEC_PER_SEC); | |
195 | tv->tv_usec = (suseconds_t) (u % USEC_PER_SEC); | |
9a98c7a1 LP |
196 | } |
197 | ||
9a98c7a1 LP |
198 | return tv; |
199 | } | |
200 | ||
5ab99e07 | 201 | static char *format_timestamp_internal(char *buf, size_t l, usec_t t, bool utc) { |
9a98c7a1 LP |
202 | struct tm tm; |
203 | time_t sec; | |
204 | ||
205 | assert(buf); | |
206 | assert(l > 0); | |
207 | ||
3a43da28 | 208 | if (t <= 0 || t == USEC_INFINITY) |
9a98c7a1 LP |
209 | return NULL; |
210 | ||
211 | sec = (time_t) (t / USEC_PER_SEC); | |
7c67c79c | 212 | localtime_or_gmtime_r(&sec, &tm, utc); |
9a98c7a1 | 213 | |
a62e83b4 | 214 | if (strftime(buf, l, "%a %Y-%m-%d %H:%M:%S %Z", &tm) <= 0) |
9a98c7a1 LP |
215 | return NULL; |
216 | ||
217 | return buf; | |
218 | } | |
219 | ||
a62e83b4 JS |
220 | char *format_timestamp(char *buf, size_t l, usec_t t) { |
221 | return format_timestamp_internal(buf, l, t, false); | |
222 | } | |
223 | ||
5ab99e07 LP |
224 | char *format_timestamp_utc(char *buf, size_t l, usec_t t) { |
225 | return format_timestamp_internal(buf, l, t, true); | |
226 | } | |
227 | ||
228 | static char *format_timestamp_internal_us(char *buf, size_t l, usec_t t, bool utc) { | |
f02d8367 ZJS |
229 | struct tm tm; |
230 | time_t sec; | |
231 | ||
232 | assert(buf); | |
233 | assert(l > 0); | |
234 | ||
3a43da28 | 235 | if (t <= 0 || t == USEC_INFINITY) |
f02d8367 ZJS |
236 | return NULL; |
237 | ||
238 | sec = (time_t) (t / USEC_PER_SEC); | |
7c67c79c | 239 | localtime_or_gmtime_r(&sec, &tm, utc); |
f02d8367 ZJS |
240 | |
241 | if (strftime(buf, l, "%a %Y-%m-%d %H:%M:%S", &tm) <= 0) | |
242 | return NULL; | |
609e002e | 243 | snprintf(buf + strlen(buf), l - strlen(buf), ".%06llu", (unsigned long long) (t % USEC_PER_SEC)); |
f02d8367 ZJS |
244 | if (strftime(buf + strlen(buf), l - strlen(buf), " %Z", &tm) <= 0) |
245 | return NULL; | |
246 | ||
247 | return buf; | |
248 | } | |
249 | ||
5ab99e07 LP |
250 | char *format_timestamp_us(char *buf, size_t l, usec_t t) { |
251 | return format_timestamp_internal_us(buf, l, t, false); | |
252 | } | |
253 | ||
254 | char *format_timestamp_us_utc(char *buf, size_t l, usec_t t) { | |
255 | return format_timestamp_internal_us(buf, l, t, true); | |
256 | } | |
257 | ||
bbb8486e | 258 | char *format_timestamp_relative(char *buf, size_t l, usec_t t) { |
1fcf71f5 | 259 | const char *s; |
9a98c7a1 LP |
260 | usec_t n, d; |
261 | ||
65de0395 | 262 | if (t <= 0 || t == USEC_INFINITY) |
9a98c7a1 LP |
263 | return NULL; |
264 | ||
65de0395 | 265 | n = now(CLOCK_REALTIME); |
1fcf71f5 LP |
266 | if (n > t) { |
267 | d = n - t; | |
268 | s = "ago"; | |
269 | } else { | |
270 | d = t - n; | |
271 | s = "left"; | |
272 | } | |
9a98c7a1 LP |
273 | |
274 | if (d >= USEC_PER_YEAR) | |
609e002e | 275 | snprintf(buf, l, USEC_FMT " years " USEC_FMT " months %s", |
de0671ee ZJS |
276 | d / USEC_PER_YEAR, |
277 | (d % USEC_PER_YEAR) / USEC_PER_MONTH, s); | |
9a98c7a1 | 278 | else if (d >= USEC_PER_MONTH) |
609e002e | 279 | snprintf(buf, l, USEC_FMT " months " USEC_FMT " days %s", |
de0671ee ZJS |
280 | d / USEC_PER_MONTH, |
281 | (d % USEC_PER_MONTH) / USEC_PER_DAY, s); | |
9a98c7a1 | 282 | else if (d >= USEC_PER_WEEK) |
609e002e | 283 | snprintf(buf, l, USEC_FMT " weeks " USEC_FMT " days %s", |
de0671ee ZJS |
284 | d / USEC_PER_WEEK, |
285 | (d % USEC_PER_WEEK) / USEC_PER_DAY, s); | |
9a98c7a1 | 286 | else if (d >= 2*USEC_PER_DAY) |
609e002e | 287 | snprintf(buf, l, USEC_FMT " days %s", d / USEC_PER_DAY, s); |
9a98c7a1 | 288 | else if (d >= 25*USEC_PER_HOUR) |
609e002e | 289 | snprintf(buf, l, "1 day " USEC_FMT "h %s", |
de0671ee | 290 | (d - USEC_PER_DAY) / USEC_PER_HOUR, s); |
9a98c7a1 | 291 | else if (d >= 6*USEC_PER_HOUR) |
609e002e | 292 | snprintf(buf, l, USEC_FMT "h %s", |
de0671ee | 293 | d / USEC_PER_HOUR, s); |
9a98c7a1 | 294 | else if (d >= USEC_PER_HOUR) |
609e002e | 295 | snprintf(buf, l, USEC_FMT "h " USEC_FMT "min %s", |
de0671ee ZJS |
296 | d / USEC_PER_HOUR, |
297 | (d % USEC_PER_HOUR) / USEC_PER_MINUTE, s); | |
9a98c7a1 | 298 | else if (d >= 5*USEC_PER_MINUTE) |
609e002e | 299 | snprintf(buf, l, USEC_FMT "min %s", |
de0671ee | 300 | d / USEC_PER_MINUTE, s); |
9a98c7a1 | 301 | else if (d >= USEC_PER_MINUTE) |
609e002e | 302 | snprintf(buf, l, USEC_FMT "min " USEC_FMT "s %s", |
de0671ee ZJS |
303 | d / USEC_PER_MINUTE, |
304 | (d % USEC_PER_MINUTE) / USEC_PER_SEC, s); | |
9a98c7a1 | 305 | else if (d >= USEC_PER_SEC) |
609e002e | 306 | snprintf(buf, l, USEC_FMT "s %s", |
de0671ee | 307 | d / USEC_PER_SEC, s); |
9a98c7a1 | 308 | else if (d >= USEC_PER_MSEC) |
609e002e | 309 | snprintf(buf, l, USEC_FMT "ms %s", |
de0671ee | 310 | d / USEC_PER_MSEC, s); |
9a98c7a1 | 311 | else if (d > 0) |
de0671ee ZJS |
312 | snprintf(buf, l, USEC_FMT"us %s", |
313 | d, s); | |
9a98c7a1 LP |
314 | else |
315 | snprintf(buf, l, "now"); | |
316 | ||
317 | buf[l-1] = 0; | |
318 | return buf; | |
319 | } | |
320 | ||
2fa4092c | 321 | char *format_timespan(char *buf, size_t l, usec_t t, usec_t accuracy) { |
9a98c7a1 LP |
322 | static const struct { |
323 | const char *suffix; | |
324 | usec_t usec; | |
325 | } table[] = { | |
b719810d LP |
326 | { "y", USEC_PER_YEAR }, |
327 | { "month", USEC_PER_MONTH }, | |
9a98c7a1 LP |
328 | { "w", USEC_PER_WEEK }, |
329 | { "d", USEC_PER_DAY }, | |
330 | { "h", USEC_PER_HOUR }, | |
331 | { "min", USEC_PER_MINUTE }, | |
332 | { "s", USEC_PER_SEC }, | |
333 | { "ms", USEC_PER_MSEC }, | |
334 | { "us", 1 }, | |
335 | }; | |
336 | ||
337 | unsigned i; | |
338 | char *p = buf; | |
2fa4092c | 339 | bool something = false; |
9a98c7a1 LP |
340 | |
341 | assert(buf); | |
342 | assert(l > 0); | |
343 | ||
bb1fada8 LP |
344 | if (t == USEC_INFINITY) { |
345 | strncpy(p, "infinity", l-1); | |
346 | p[l-1] = 0; | |
347 | return p; | |
348 | } | |
349 | ||
350 | if (t <= 0) { | |
351 | strncpy(p, "0", l-1); | |
7c537b2e LP |
352 | p[l-1] = 0; |
353 | return p; | |
354 | } | |
355 | ||
7f602784 | 356 | /* The result of this function can be parsed with parse_sec */ |
9a98c7a1 LP |
357 | |
358 | for (i = 0; i < ELEMENTSOF(table); i++) { | |
7759ecb2 | 359 | int k = 0; |
9a98c7a1 | 360 | size_t n; |
2fa4092c LP |
361 | bool done = false; |
362 | usec_t a, b; | |
363 | ||
7c537b2e LP |
364 | if (t <= 0) |
365 | break; | |
2fa4092c | 366 | |
7c537b2e | 367 | if (t < accuracy && something) |
2fa4092c | 368 | break; |
9a98c7a1 LP |
369 | |
370 | if (t < table[i].usec) | |
371 | continue; | |
372 | ||
373 | if (l <= 1) | |
374 | break; | |
375 | ||
2fa4092c LP |
376 | a = t / table[i].usec; |
377 | b = t % table[i].usec; | |
378 | ||
379 | /* Let's see if we should shows this in dot notation */ | |
380 | if (t < USEC_PER_MINUTE && b > 0) { | |
381 | usec_t cc; | |
382 | int j; | |
383 | ||
384 | j = 0; | |
385 | for (cc = table[i].usec; cc > 1; cc /= 10) | |
386 | j++; | |
387 | ||
388 | for (cc = accuracy; cc > 1; cc /= 10) { | |
389 | b /= 10; | |
390 | j--; | |
391 | } | |
392 | ||
393 | if (j > 0) { | |
394 | k = snprintf(p, l, | |
de0671ee | 395 | "%s"USEC_FMT".%0*llu%s", |
2fa4092c | 396 | p > buf ? " " : "", |
de0671ee | 397 | a, |
2fa4092c LP |
398 | j, |
399 | (unsigned long long) b, | |
400 | table[i].suffix); | |
401 | ||
402 | t = 0; | |
403 | done = true; | |
404 | } | |
405 | } | |
406 | ||
407 | /* No? Then let's show it normally */ | |
408 | if (!done) { | |
409 | k = snprintf(p, l, | |
de0671ee | 410 | "%s"USEC_FMT"%s", |
2fa4092c | 411 | p > buf ? " " : "", |
de0671ee | 412 | a, |
2fa4092c LP |
413 | table[i].suffix); |
414 | ||
415 | t = b; | |
416 | } | |
417 | ||
9a98c7a1 LP |
418 | n = MIN((size_t) k, l); |
419 | ||
420 | l -= n; | |
421 | p += n; | |
422 | ||
2fa4092c | 423 | something = true; |
9a98c7a1 LP |
424 | } |
425 | ||
426 | *p = 0; | |
427 | ||
428 | return buf; | |
429 | } | |
430 | ||
431 | void dual_timestamp_serialize(FILE *f, const char *name, dual_timestamp *t) { | |
432 | ||
433 | assert(f); | |
434 | assert(name); | |
435 | assert(t); | |
436 | ||
437 | if (!dual_timestamp_is_set(t)) | |
438 | return; | |
439 | ||
de0671ee | 440 | fprintf(f, "%s="USEC_FMT" "USEC_FMT"\n", |
9a98c7a1 | 441 | name, |
de0671ee ZJS |
442 | t->realtime, |
443 | t->monotonic); | |
9a98c7a1 LP |
444 | } |
445 | ||
e911de99 | 446 | int dual_timestamp_deserialize(const char *value, dual_timestamp *t) { |
9a98c7a1 LP |
447 | unsigned long long a, b; |
448 | ||
449 | assert(value); | |
450 | assert(t); | |
451 | ||
e911de99 LP |
452 | if (sscanf(value, "%llu %llu", &a, &b) != 2) { |
453 | log_debug("Failed to parse finish timestamp value %s.", value); | |
454 | return -EINVAL; | |
9a98c7a1 | 455 | } |
e911de99 LP |
456 | |
457 | t->realtime = a; | |
458 | t->monotonic = b; | |
459 | ||
460 | return 0; | |
9a98c7a1 LP |
461 | } |
462 | ||
463 | int parse_timestamp(const char *t, usec_t *usec) { | |
92134489 LP |
464 | static const struct { |
465 | const char *name; | |
466 | const int nr; | |
467 | } day_nr[] = { | |
468 | { "Sunday", 0 }, | |
469 | { "Sun", 0 }, | |
470 | { "Monday", 1 }, | |
471 | { "Mon", 1 }, | |
472 | { "Tuesday", 2 }, | |
473 | { "Tue", 2 }, | |
474 | { "Wednesday", 3 }, | |
475 | { "Wed", 3 }, | |
476 | { "Thursday", 4 }, | |
477 | { "Thu", 4 }, | |
478 | { "Friday", 5 }, | |
479 | { "Fri", 5 }, | |
480 | { "Saturday", 6 }, | |
481 | { "Sat", 6 }, | |
482 | }; | |
483 | ||
9a98c7a1 | 484 | const char *k; |
078efddd | 485 | const char *utc; |
9a98c7a1 LP |
486 | struct tm tm, copy; |
487 | time_t x; | |
e4eaf99a | 488 | usec_t x_usec, plus = 0, minus = 0, ret; |
92134489 LP |
489 | int r, weekday = -1; |
490 | unsigned i; | |
9a98c7a1 LP |
491 | |
492 | /* | |
493 | * Allowed syntaxes: | |
494 | * | |
495 | * 2012-09-22 16:34:22 | |
496 | * 2012-09-22 16:34 (seconds will be set to 0) | |
497 | * 2012-09-22 (time will be set to 00:00:00) | |
498 | * 16:34:22 (date will be set to today) | |
499 | * 16:34 (date will be set to today, seconds to 0) | |
500 | * now | |
501 | * yesterday (time is set to 00:00:00) | |
502 | * today (time is set to 00:00:00) | |
503 | * tomorrow (time is set to 00:00:00) | |
504 | * +5min | |
505 | * -5days | |
5ba6e094 | 506 | * @2147483647 (seconds since epoch) |
9a98c7a1 LP |
507 | * |
508 | */ | |
509 | ||
510 | assert(t); | |
511 | assert(usec); | |
512 | ||
e4eaf99a HV |
513 | if (t[0] == '@') |
514 | return parse_sec(t + 1, usec); | |
9a98c7a1 | 515 | |
e4eaf99a | 516 | ret = now(CLOCK_REALTIME); |
9a98c7a1 | 517 | |
e4eaf99a | 518 | if (streq(t, "now")) |
9a98c7a1 LP |
519 | goto finish; |
520 | ||
e4eaf99a | 521 | else if (t[0] == '+') { |
7f602784 | 522 | r = parse_sec(t+1, &plus); |
9a98c7a1 LP |
523 | if (r < 0) |
524 | return r; | |
525 | ||
526 | goto finish; | |
9a98c7a1 | 527 | |
5ba6e094 | 528 | } else if (t[0] == '-') { |
7f602784 | 529 | r = parse_sec(t+1, &minus); |
9a98c7a1 LP |
530 | if (r < 0) |
531 | return r; | |
532 | ||
533 | goto finish; | |
decad910 | 534 | |
078efddd HV |
535 | } else if ((k = endswith(t, " ago"))) { |
536 | t = strndupa(t, k - t); | |
decad910 | 537 | |
e4eaf99a | 538 | r = parse_sec(t, &minus); |
decad910 LP |
539 | if (r < 0) |
540 | return r; | |
541 | ||
1fcf71f5 | 542 | goto finish; |
1fcf71f5 | 543 | |
078efddd HV |
544 | } else if ((k = endswith(t, " left"))) { |
545 | t = strndupa(t, k - t); | |
1fcf71f5 | 546 | |
e4eaf99a | 547 | r = parse_sec(t, &plus); |
1fcf71f5 LP |
548 | if (r < 0) |
549 | return r; | |
550 | ||
decad910 | 551 | goto finish; |
9a98c7a1 LP |
552 | } |
553 | ||
e4eaf99a HV |
554 | utc = endswith_no_case(t, " UTC"); |
555 | if (utc) | |
078efddd | 556 | t = strndupa(t, utc - t); |
e4eaf99a HV |
557 | |
558 | x = ret / USEC_PER_SEC; | |
559 | x_usec = 0; | |
560 | ||
561 | assert_se(localtime_or_gmtime_r(&x, &tm, utc)); | |
562 | tm.tm_isdst = -1; | |
563 | ||
564 | if (streq(t, "today")) { | |
565 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
566 | goto from_tm; | |
567 | ||
568 | } else if (streq(t, "yesterday")) { | |
569 | tm.tm_mday --; | |
570 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
571 | goto from_tm; | |
572 | ||
573 | } else if (streq(t, "tomorrow")) { | |
574 | tm.tm_mday ++; | |
575 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
576 | goto from_tm; | |
577 | } | |
578 | ||
579 | ||
92134489 LP |
580 | for (i = 0; i < ELEMENTSOF(day_nr); i++) { |
581 | size_t skip; | |
582 | ||
583 | if (!startswith_no_case(t, day_nr[i].name)) | |
584 | continue; | |
585 | ||
586 | skip = strlen(day_nr[i].name); | |
587 | if (t[skip] != ' ') | |
588 | continue; | |
589 | ||
590 | weekday = day_nr[i].nr; | |
591 | t += skip + 1; | |
592 | break; | |
593 | } | |
594 | ||
9a98c7a1 LP |
595 | copy = tm; |
596 | k = strptime(t, "%y-%m-%d %H:%M:%S", &tm); | |
e4eaf99a HV |
597 | if (k) { |
598 | if (*k == '.') | |
599 | goto parse_usec; | |
600 | else if (*k == 0) | |
601 | goto from_tm; | |
602 | } | |
9a98c7a1 LP |
603 | |
604 | tm = copy; | |
605 | k = strptime(t, "%Y-%m-%d %H:%M:%S", &tm); | |
e4eaf99a HV |
606 | if (k) { |
607 | if (*k == '.') | |
608 | goto parse_usec; | |
609 | else if (*k == 0) | |
610 | goto from_tm; | |
611 | } | |
9a98c7a1 LP |
612 | |
613 | tm = copy; | |
614 | k = strptime(t, "%y-%m-%d %H:%M", &tm); | |
615 | if (k && *k == 0) { | |
616 | tm.tm_sec = 0; | |
e4eaf99a | 617 | goto from_tm; |
9a98c7a1 LP |
618 | } |
619 | ||
620 | tm = copy; | |
621 | k = strptime(t, "%Y-%m-%d %H:%M", &tm); | |
622 | if (k && *k == 0) { | |
623 | tm.tm_sec = 0; | |
e4eaf99a | 624 | goto from_tm; |
9a98c7a1 LP |
625 | } |
626 | ||
627 | tm = copy; | |
628 | k = strptime(t, "%y-%m-%d", &tm); | |
629 | if (k && *k == 0) { | |
630 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
e4eaf99a | 631 | goto from_tm; |
9a98c7a1 LP |
632 | } |
633 | ||
634 | tm = copy; | |
635 | k = strptime(t, "%Y-%m-%d", &tm); | |
636 | if (k && *k == 0) { | |
637 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
e4eaf99a | 638 | goto from_tm; |
9a98c7a1 LP |
639 | } |
640 | ||
641 | tm = copy; | |
642 | k = strptime(t, "%H:%M:%S", &tm); | |
e4eaf99a HV |
643 | if (k) { |
644 | if (*k == '.') | |
645 | goto parse_usec; | |
646 | else if (*k == 0) | |
647 | goto from_tm; | |
648 | } | |
9a98c7a1 LP |
649 | |
650 | tm = copy; | |
651 | k = strptime(t, "%H:%M", &tm); | |
652 | if (k && *k == 0) { | |
653 | tm.tm_sec = 0; | |
e4eaf99a | 654 | goto from_tm; |
9a98c7a1 LP |
655 | } |
656 | ||
657 | return -EINVAL; | |
658 | ||
e4eaf99a HV |
659 | parse_usec: |
660 | { | |
661 | char *end; | |
662 | unsigned long long val; | |
663 | size_t l; | |
664 | ||
665 | k++; | |
666 | if (*k < '0' || *k > '9') | |
667 | return -EINVAL; | |
668 | ||
669 | /* base 10 instead of base 0, .09 is not base 8 */ | |
670 | errno = 0; | |
671 | val = strtoull(k, &end, 10); | |
672 | if (*end || errno) | |
673 | return -EINVAL; | |
674 | ||
675 | l = end-k; | |
676 | ||
677 | /* val has l digits, make them 6 */ | |
678 | for (; l < 6; l++) | |
679 | val *= 10; | |
680 | for (; l > 6; l--) | |
681 | val /= 10; | |
682 | ||
683 | x_usec = val; | |
684 | } | |
685 | ||
686 | from_tm: | |
687 | x = mktime_or_timegm(&tm, utc); | |
9a98c7a1 LP |
688 | if (x == (time_t) -1) |
689 | return -EINVAL; | |
690 | ||
92134489 LP |
691 | if (weekday >= 0 && tm.tm_wday != weekday) |
692 | return -EINVAL; | |
693 | ||
e4eaf99a | 694 | ret = (usec_t) x * USEC_PER_SEC + x_usec; |
9a98c7a1 | 695 | |
e4eaf99a | 696 | finish: |
9a98c7a1 LP |
697 | ret += plus; |
698 | if (ret > minus) | |
699 | ret -= minus; | |
700 | else | |
701 | ret = 0; | |
702 | ||
703 | *usec = ret; | |
704 | ||
705 | return 0; | |
706 | } | |
707 | ||
7f602784 | 708 | int parse_sec(const char *t, usec_t *usec) { |
9a98c7a1 LP |
709 | static const struct { |
710 | const char *suffix; | |
711 | usec_t usec; | |
712 | } table[] = { | |
713 | { "seconds", USEC_PER_SEC }, | |
714 | { "second", USEC_PER_SEC }, | |
715 | { "sec", USEC_PER_SEC }, | |
716 | { "s", USEC_PER_SEC }, | |
717 | { "minutes", USEC_PER_MINUTE }, | |
718 | { "minute", USEC_PER_MINUTE }, | |
719 | { "min", USEC_PER_MINUTE }, | |
720 | { "months", USEC_PER_MONTH }, | |
721 | { "month", USEC_PER_MONTH }, | |
722 | { "msec", USEC_PER_MSEC }, | |
723 | { "ms", USEC_PER_MSEC }, | |
724 | { "m", USEC_PER_MINUTE }, | |
725 | { "hours", USEC_PER_HOUR }, | |
726 | { "hour", USEC_PER_HOUR }, | |
727 | { "hr", USEC_PER_HOUR }, | |
728 | { "h", USEC_PER_HOUR }, | |
729 | { "days", USEC_PER_DAY }, | |
730 | { "day", USEC_PER_DAY }, | |
731 | { "d", USEC_PER_DAY }, | |
732 | { "weeks", USEC_PER_WEEK }, | |
733 | { "week", USEC_PER_WEEK }, | |
734 | { "w", USEC_PER_WEEK }, | |
735 | { "years", USEC_PER_YEAR }, | |
736 | { "year", USEC_PER_YEAR }, | |
737 | { "y", USEC_PER_YEAR }, | |
738 | { "usec", 1ULL }, | |
739 | { "us", 1ULL }, | |
740 | { "", USEC_PER_SEC }, /* default is sec */ | |
741 | }; | |
742 | ||
b1d6dcf5 | 743 | const char *p, *s; |
9a98c7a1 | 744 | usec_t r = 0; |
cb0dac05 | 745 | bool something = false; |
9a98c7a1 LP |
746 | |
747 | assert(t); | |
748 | assert(usec); | |
749 | ||
750 | p = t; | |
b1d6dcf5 ZJS |
751 | |
752 | p += strspn(p, WHITESPACE); | |
753 | s = startswith(p, "infinity"); | |
754 | if (s) { | |
755 | s += strspn(s, WHITESPACE); | |
756 | if (*s != 0) | |
757 | return -EINVAL; | |
758 | ||
759 | *usec = USEC_INFINITY; | |
760 | return 0; | |
761 | } | |
762 | ||
cb0dac05 LP |
763 | for (;;) { |
764 | long long l, z = 0; | |
9a98c7a1 | 765 | char *e; |
cb0dac05 LP |
766 | unsigned i, n = 0; |
767 | ||
768 | p += strspn(p, WHITESPACE); | |
769 | ||
770 | if (*p == 0) { | |
771 | if (!something) | |
772 | return -EINVAL; | |
773 | ||
774 | break; | |
775 | } | |
9a98c7a1 LP |
776 | |
777 | errno = 0; | |
778 | l = strtoll(p, &e, 10); | |
779 | ||
8333c77e | 780 | if (errno > 0) |
9a98c7a1 LP |
781 | return -errno; |
782 | ||
783 | if (l < 0) | |
784 | return -ERANGE; | |
785 | ||
cb0dac05 LP |
786 | if (*e == '.') { |
787 | char *b = e + 1; | |
788 | ||
789 | errno = 0; | |
790 | z = strtoll(b, &e, 10); | |
791 | if (errno > 0) | |
792 | return -errno; | |
793 | ||
794 | if (z < 0) | |
795 | return -ERANGE; | |
796 | ||
797 | if (e == b) | |
798 | return -EINVAL; | |
799 | ||
800 | n = e - b; | |
801 | ||
802 | } else if (e == p) | |
9a98c7a1 LP |
803 | return -EINVAL; |
804 | ||
805 | e += strspn(e, WHITESPACE); | |
806 | ||
807 | for (i = 0; i < ELEMENTSOF(table); i++) | |
808 | if (startswith(e, table[i].suffix)) { | |
cb0dac05 LP |
809 | usec_t k = (usec_t) z * table[i].usec; |
810 | ||
811 | for (; n > 0; n--) | |
812 | k /= 10; | |
813 | ||
814 | r += (usec_t) l * table[i].usec + k; | |
9a98c7a1 | 815 | p = e + strlen(table[i].suffix); |
cb0dac05 LP |
816 | |
817 | something = true; | |
9a98c7a1 LP |
818 | break; |
819 | } | |
820 | ||
821 | if (i >= ELEMENTSOF(table)) | |
822 | return -EINVAL; | |
823 | ||
cb0dac05 | 824 | } |
9a98c7a1 LP |
825 | |
826 | *usec = r; | |
827 | ||
828 | return 0; | |
829 | } | |
830 | ||
831 | int parse_nsec(const char *t, nsec_t *nsec) { | |
832 | static const struct { | |
833 | const char *suffix; | |
834 | nsec_t nsec; | |
835 | } table[] = { | |
836 | { "seconds", NSEC_PER_SEC }, | |
837 | { "second", NSEC_PER_SEC }, | |
838 | { "sec", NSEC_PER_SEC }, | |
839 | { "s", NSEC_PER_SEC }, | |
840 | { "minutes", NSEC_PER_MINUTE }, | |
841 | { "minute", NSEC_PER_MINUTE }, | |
842 | { "min", NSEC_PER_MINUTE }, | |
843 | { "months", NSEC_PER_MONTH }, | |
844 | { "month", NSEC_PER_MONTH }, | |
845 | { "msec", NSEC_PER_MSEC }, | |
846 | { "ms", NSEC_PER_MSEC }, | |
847 | { "m", NSEC_PER_MINUTE }, | |
848 | { "hours", NSEC_PER_HOUR }, | |
849 | { "hour", NSEC_PER_HOUR }, | |
850 | { "hr", NSEC_PER_HOUR }, | |
851 | { "h", NSEC_PER_HOUR }, | |
852 | { "days", NSEC_PER_DAY }, | |
853 | { "day", NSEC_PER_DAY }, | |
854 | { "d", NSEC_PER_DAY }, | |
855 | { "weeks", NSEC_PER_WEEK }, | |
856 | { "week", NSEC_PER_WEEK }, | |
857 | { "w", NSEC_PER_WEEK }, | |
858 | { "years", NSEC_PER_YEAR }, | |
859 | { "year", NSEC_PER_YEAR }, | |
860 | { "y", NSEC_PER_YEAR }, | |
861 | { "usec", NSEC_PER_USEC }, | |
862 | { "us", NSEC_PER_USEC }, | |
863 | { "nsec", 1ULL }, | |
864 | { "ns", 1ULL }, | |
865 | { "", 1ULL }, /* default is nsec */ | |
866 | }; | |
867 | ||
e73c78c2 | 868 | const char *p, *s; |
9a98c7a1 | 869 | nsec_t r = 0; |
cb0dac05 | 870 | bool something = false; |
9a98c7a1 LP |
871 | |
872 | assert(t); | |
873 | assert(nsec); | |
874 | ||
875 | p = t; | |
e73c78c2 LP |
876 | |
877 | p += strspn(p, WHITESPACE); | |
878 | s = startswith(p, "infinity"); | |
879 | if (s) { | |
880 | s += strspn(s, WHITESPACE); | |
8e8933ca | 881 | if (*s != 0) |
e73c78c2 LP |
882 | return -EINVAL; |
883 | ||
884 | *nsec = NSEC_INFINITY; | |
885 | return 0; | |
886 | } | |
887 | ||
cb0dac05 LP |
888 | for (;;) { |
889 | long long l, z = 0; | |
9a98c7a1 | 890 | char *e; |
cb0dac05 LP |
891 | unsigned i, n = 0; |
892 | ||
893 | p += strspn(p, WHITESPACE); | |
894 | ||
895 | if (*p == 0) { | |
896 | if (!something) | |
897 | return -EINVAL; | |
898 | ||
899 | break; | |
900 | } | |
9a98c7a1 LP |
901 | |
902 | errno = 0; | |
903 | l = strtoll(p, &e, 10); | |
904 | ||
8333c77e | 905 | if (errno > 0) |
9a98c7a1 LP |
906 | return -errno; |
907 | ||
908 | if (l < 0) | |
909 | return -ERANGE; | |
910 | ||
cb0dac05 LP |
911 | if (*e == '.') { |
912 | char *b = e + 1; | |
913 | ||
914 | errno = 0; | |
915 | z = strtoll(b, &e, 10); | |
916 | if (errno > 0) | |
917 | return -errno; | |
918 | ||
919 | if (z < 0) | |
920 | return -ERANGE; | |
921 | ||
922 | if (e == b) | |
923 | return -EINVAL; | |
924 | ||
925 | n = e - b; | |
926 | ||
927 | } else if (e == p) | |
9a98c7a1 LP |
928 | return -EINVAL; |
929 | ||
930 | e += strspn(e, WHITESPACE); | |
931 | ||
932 | for (i = 0; i < ELEMENTSOF(table); i++) | |
933 | if (startswith(e, table[i].suffix)) { | |
cb0dac05 LP |
934 | nsec_t k = (nsec_t) z * table[i].nsec; |
935 | ||
936 | for (; n > 0; n--) | |
937 | k /= 10; | |
938 | ||
939 | r += (nsec_t) l * table[i].nsec + k; | |
9a98c7a1 | 940 | p = e + strlen(table[i].suffix); |
cb0dac05 LP |
941 | |
942 | something = true; | |
9a98c7a1 LP |
943 | break; |
944 | } | |
945 | ||
946 | if (i >= ELEMENTSOF(table)) | |
947 | return -EINVAL; | |
948 | ||
cb0dac05 | 949 | } |
9a98c7a1 LP |
950 | |
951 | *nsec = r; | |
952 | ||
953 | return 0; | |
954 | } | |
03cc26dd LP |
955 | |
956 | bool ntp_synced(void) { | |
957 | struct timex txc = {}; | |
958 | ||
959 | if (adjtimex(&txc) < 0) | |
960 | return false; | |
961 | ||
962 | if (txc.status & STA_UNSYNC) | |
963 | return false; | |
964 | ||
965 | return true; | |
966 | } | |
75683450 LP |
967 | |
968 | int get_timezones(char ***ret) { | |
969 | _cleanup_fclose_ FILE *f = NULL; | |
970 | _cleanup_strv_free_ char **zones = NULL; | |
971 | size_t n_zones = 0, n_allocated = 0; | |
972 | ||
973 | assert(ret); | |
974 | ||
975 | zones = strv_new("UTC", NULL); | |
976 | if (!zones) | |
977 | return -ENOMEM; | |
978 | ||
979 | n_allocated = 2; | |
980 | n_zones = 1; | |
981 | ||
982 | f = fopen("/usr/share/zoneinfo/zone.tab", "re"); | |
983 | if (f) { | |
984 | char l[LINE_MAX]; | |
985 | ||
986 | FOREACH_LINE(l, f, return -errno) { | |
987 | char *p, *w; | |
988 | size_t k; | |
989 | ||
990 | p = strstrip(l); | |
991 | ||
992 | if (isempty(p) || *p == '#') | |
993 | continue; | |
994 | ||
995 | /* Skip over country code */ | |
996 | p += strcspn(p, WHITESPACE); | |
997 | p += strspn(p, WHITESPACE); | |
998 | ||
999 | /* Skip over coordinates */ | |
1000 | p += strcspn(p, WHITESPACE); | |
1001 | p += strspn(p, WHITESPACE); | |
1002 | ||
1003 | /* Found timezone name */ | |
1004 | k = strcspn(p, WHITESPACE); | |
1005 | if (k <= 0) | |
1006 | continue; | |
1007 | ||
1008 | w = strndup(p, k); | |
1009 | if (!w) | |
1010 | return -ENOMEM; | |
1011 | ||
1012 | if (!GREEDY_REALLOC(zones, n_allocated, n_zones + 2)) { | |
1013 | free(w); | |
1014 | return -ENOMEM; | |
1015 | } | |
1016 | ||
1017 | zones[n_zones++] = w; | |
1018 | zones[n_zones] = NULL; | |
1019 | } | |
1020 | ||
1021 | strv_sort(zones); | |
1022 | ||
1023 | } else if (errno != ENOENT) | |
1024 | return -errno; | |
1025 | ||
1026 | *ret = zones; | |
1027 | zones = NULL; | |
1028 | ||
1029 | return 0; | |
1030 | } | |
1031 | ||
1032 | bool timezone_is_valid(const char *name) { | |
1033 | bool slash = false; | |
1034 | const char *p, *t; | |
1035 | struct stat st; | |
1036 | ||
5c904ba5 LP |
1037 | if (isempty(name)) |
1038 | return false; | |
1039 | ||
1040 | if (name[0] == '/') | |
75683450 LP |
1041 | return false; |
1042 | ||
1043 | for (p = name; *p; p++) { | |
1044 | if (!(*p >= '0' && *p <= '9') && | |
1045 | !(*p >= 'a' && *p <= 'z') && | |
1046 | !(*p >= 'A' && *p <= 'Z') && | |
1047 | !(*p == '-' || *p == '_' || *p == '+' || *p == '/')) | |
1048 | return false; | |
1049 | ||
1050 | if (*p == '/') { | |
1051 | ||
1052 | if (slash) | |
1053 | return false; | |
1054 | ||
1055 | slash = true; | |
1056 | } else | |
1057 | slash = false; | |
1058 | } | |
1059 | ||
1060 | if (slash) | |
1061 | return false; | |
1062 | ||
63c372cb | 1063 | t = strjoina("/usr/share/zoneinfo/", name); |
75683450 LP |
1064 | if (stat(t, &st) < 0) |
1065 | return false; | |
1066 | ||
1067 | if (!S_ISREG(st.st_mode)) | |
1068 | return false; | |
1069 | ||
1070 | return true; | |
1071 | } | |
77ff2de9 TG |
1072 | |
1073 | clockid_t clock_boottime_or_monotonic(void) { | |
1074 | static clockid_t clock = -1; | |
1075 | int fd; | |
1076 | ||
1077 | if (clock != -1) | |
1078 | return clock; | |
1079 | ||
1080 | fd = timerfd_create(CLOCK_BOOTTIME, TFD_NONBLOCK|TFD_CLOEXEC); | |
1081 | if (fd < 0) | |
1082 | clock = CLOCK_MONOTONIC; | |
1083 | else { | |
1084 | safe_close(fd); | |
1085 | clock = CLOCK_BOOTTIME; | |
1086 | } | |
1087 | ||
1088 | return clock; | |
1089 | } | |
5c904ba5 | 1090 | |
64d6c229 | 1091 | int get_timezone(char **tz) { |
5c904ba5 LP |
1092 | _cleanup_free_ char *t = NULL; |
1093 | const char *e; | |
1094 | char *z; | |
1095 | int r; | |
1096 | ||
1097 | r = readlink_malloc("/etc/localtime", &t); | |
1098 | if (r < 0) | |
1099 | return r; /* returns EINVAL if not a symlink */ | |
1100 | ||
1101 | e = path_startswith(t, "/usr/share/zoneinfo/"); | |
1102 | if (!e) | |
1103 | e = path_startswith(t, "../usr/share/zoneinfo/"); | |
1104 | if (!e) | |
1105 | return -EINVAL; | |
1106 | ||
1107 | if (!timezone_is_valid(e)) | |
1108 | return -EINVAL; | |
1109 | ||
1110 | z = strdup(e); | |
1111 | if (!z) | |
1112 | return -ENOMEM; | |
1113 | ||
64d6c229 | 1114 | *tz = z; |
5c904ba5 LP |
1115 | return 0; |
1116 | } | |
7c67c79c HV |
1117 | |
1118 | time_t mktime_or_timegm(struct tm *tm, bool utc) { | |
1119 | return utc ? timegm(tm) : mktime(tm); | |
1120 | } | |
1121 | ||
1122 | struct tm *localtime_or_gmtime_r(const time_t *t, struct tm *tm, bool utc) { | |
1123 | return utc ? gmtime_r(t, tm) : localtime_r(t, tm); | |
1124 | } | |
87b8ce69 SS |
1125 | |
1126 | unsigned long usec_to_jiffies(usec_t u) { | |
1127 | static thread_local unsigned long hz = 0; | |
1128 | long r; | |
1129 | ||
1130 | if (hz == 0) { | |
1131 | r = sysconf(_SC_CLK_TCK); | |
1132 | ||
1133 | assert(r > 0); | |
1134 | hz = (unsigned long) r; | |
1135 | } | |
1136 | ||
1137 | return DIV_ROUND_UP(u , USEC_PER_SEC / hz); | |
1138 | } |