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Commit | Line | Data |
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9a98c7a1 LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
11c3a366 TA |
20 | #include <errno.h> |
21 | #include <limits.h> | |
22 | #include <stdlib.h> | |
9a98c7a1 | 23 | #include <string.h> |
11c3a366 TA |
24 | #include <sys/stat.h> |
25 | #include <sys/time.h> | |
77ff2de9 | 26 | #include <sys/timerfd.h> |
07630cea | 27 | #include <sys/timex.h> |
11c3a366 TA |
28 | #include <sys/types.h> |
29 | #include <unistd.h> | |
9a98c7a1 | 30 | |
b5efdb8a | 31 | #include "alloc-util.h" |
3ffd4af2 | 32 | #include "fd-util.h" |
0d39fa9c | 33 | #include "fileio.h" |
f4f15635 | 34 | #include "fs-util.h" |
11c3a366 TA |
35 | #include "log.h" |
36 | #include "macro.h" | |
93cc7779 TA |
37 | #include "parse-util.h" |
38 | #include "path-util.h" | |
07630cea | 39 | #include "string-util.h" |
75683450 | 40 | #include "strv.h" |
07630cea | 41 | #include "time-util.h" |
9a98c7a1 | 42 | |
aaea9db8 AK |
43 | static nsec_t timespec_load_nsec(const struct timespec *ts); |
44 | ||
32c1f5a5 LP |
45 | static clockid_t map_clock_id(clockid_t c) { |
46 | ||
47 | /* Some more exotic archs (s390, ppc, …) lack the "ALARM" flavour of the clocks. Thus, clock_gettime() will | |
48 | * fail for them. Since they are essentially the same as their non-ALARM pendants (their only difference is | |
49 | * when timers are set on them), let's just map them accordingly. This way, we can get the correct time even on | |
bdf19f8f | 50 | * those archs. */ |
32c1f5a5 LP |
51 | |
52 | switch (c) { | |
53 | ||
54 | case CLOCK_BOOTTIME_ALARM: | |
bdf19f8f | 55 | return CLOCK_BOOTTIME; |
32c1f5a5 LP |
56 | |
57 | case CLOCK_REALTIME_ALARM: | |
58 | return CLOCK_REALTIME; | |
59 | ||
60 | default: | |
61 | return c; | |
62 | } | |
63 | } | |
64 | ||
9a98c7a1 LP |
65 | usec_t now(clockid_t clock_id) { |
66 | struct timespec ts; | |
67 | ||
32c1f5a5 | 68 | assert_se(clock_gettime(map_clock_id(clock_id), &ts) == 0); |
9a98c7a1 LP |
69 | |
70 | return timespec_load(&ts); | |
71 | } | |
72 | ||
45d7a8bb LP |
73 | nsec_t now_nsec(clockid_t clock_id) { |
74 | struct timespec ts; | |
75 | ||
32c1f5a5 | 76 | assert_se(clock_gettime(map_clock_id(clock_id), &ts) == 0); |
45d7a8bb LP |
77 | |
78 | return timespec_load_nsec(&ts); | |
79 | } | |
80 | ||
9a98c7a1 LP |
81 | dual_timestamp* dual_timestamp_get(dual_timestamp *ts) { |
82 | assert(ts); | |
83 | ||
84 | ts->realtime = now(CLOCK_REALTIME); | |
85 | ts->monotonic = now(CLOCK_MONOTONIC); | |
86 | ||
87 | return ts; | |
88 | } | |
89 | ||
90 | dual_timestamp* dual_timestamp_from_realtime(dual_timestamp *ts, usec_t u) { | |
91 | int64_t delta; | |
92 | assert(ts); | |
93 | ||
75a5f1d8 LP |
94 | if (u == USEC_INFINITY || u <= 0) { |
95 | ts->realtime = ts->monotonic = u; | |
cae0c5e0 LP |
96 | return ts; |
97 | } | |
98 | ||
9a98c7a1 LP |
99 | ts->realtime = u; |
100 | ||
75a5f1d8 | 101 | delta = (int64_t) now(CLOCK_REALTIME) - (int64_t) u; |
5d634ca8 | 102 | ts->monotonic = usec_sub(now(CLOCK_MONOTONIC), delta); |
9a98c7a1 LP |
103 | |
104 | return ts; | |
105 | } | |
106 | ||
cae0c5e0 LP |
107 | dual_timestamp* dual_timestamp_from_monotonic(dual_timestamp *ts, usec_t u) { |
108 | int64_t delta; | |
109 | assert(ts); | |
110 | ||
3a43da28 KS |
111 | if (u == USEC_INFINITY) { |
112 | ts->realtime = ts->monotonic = USEC_INFINITY; | |
cae0c5e0 LP |
113 | return ts; |
114 | } | |
115 | ||
116 | ts->monotonic = u; | |
117 | delta = (int64_t) now(CLOCK_MONOTONIC) - (int64_t) u; | |
5d634ca8 | 118 | ts->realtime = usec_sub(now(CLOCK_REALTIME), delta); |
cae0c5e0 LP |
119 | |
120 | return ts; | |
121 | } | |
122 | ||
fbe55073 LP |
123 | dual_timestamp* dual_timestamp_from_boottime_or_monotonic(dual_timestamp *ts, usec_t u) { |
124 | int64_t delta; | |
125 | ||
126 | if (u == USEC_INFINITY) { | |
127 | ts->realtime = ts->monotonic = USEC_INFINITY; | |
128 | return ts; | |
129 | } | |
fbe55073 | 130 | |
0345d252 | 131 | dual_timestamp_get(ts); |
fbe55073 | 132 | delta = (int64_t) now(clock_boottime_or_monotonic()) - (int64_t) u; |
5d634ca8 AK |
133 | ts->realtime = usec_sub(ts->realtime, delta); |
134 | ts->monotonic = usec_sub(ts->monotonic, delta); | |
fbe55073 LP |
135 | |
136 | return ts; | |
137 | } | |
138 | ||
9a98c7a1 LP |
139 | usec_t timespec_load(const struct timespec *ts) { |
140 | assert(ts); | |
141 | ||
a2daa2f0 | 142 | if (ts->tv_sec == (time_t) -1 && ts->tv_nsec == (long) -1) |
3a43da28 | 143 | return USEC_INFINITY; |
9a98c7a1 LP |
144 | |
145 | if ((usec_t) ts->tv_sec > (UINT64_MAX - (ts->tv_nsec / NSEC_PER_USEC)) / USEC_PER_SEC) | |
3a43da28 | 146 | return USEC_INFINITY; |
9a98c7a1 LP |
147 | |
148 | return | |
149 | (usec_t) ts->tv_sec * USEC_PER_SEC + | |
150 | (usec_t) ts->tv_nsec / NSEC_PER_USEC; | |
151 | } | |
152 | ||
aaea9db8 | 153 | static nsec_t timespec_load_nsec(const struct timespec *ts) { |
45d7a8bb LP |
154 | assert(ts); |
155 | ||
a2daa2f0 | 156 | if (ts->tv_sec == (time_t) -1 && ts->tv_nsec == (long) -1) |
45d7a8bb LP |
157 | return NSEC_INFINITY; |
158 | ||
a2daa2f0 ZJS |
159 | if ((nsec_t) ts->tv_sec >= (UINT64_MAX - ts->tv_nsec) / NSEC_PER_SEC) |
160 | return NSEC_INFINITY; | |
161 | ||
162 | return (nsec_t) ts->tv_sec * NSEC_PER_SEC + (nsec_t) ts->tv_nsec; | |
45d7a8bb LP |
163 | } |
164 | ||
9a98c7a1 LP |
165 | struct timespec *timespec_store(struct timespec *ts, usec_t u) { |
166 | assert(ts); | |
167 | ||
3a43da28 | 168 | if (u == USEC_INFINITY) { |
9a98c7a1 LP |
169 | ts->tv_sec = (time_t) -1; |
170 | ts->tv_nsec = (long) -1; | |
171 | return ts; | |
172 | } | |
173 | ||
174 | ts->tv_sec = (time_t) (u / USEC_PER_SEC); | |
175 | ts->tv_nsec = (long int) ((u % USEC_PER_SEC) * NSEC_PER_USEC); | |
176 | ||
177 | return ts; | |
178 | } | |
179 | ||
180 | usec_t timeval_load(const struct timeval *tv) { | |
181 | assert(tv); | |
182 | ||
183 | if (tv->tv_sec == (time_t) -1 && | |
184 | tv->tv_usec == (suseconds_t) -1) | |
3a43da28 | 185 | return USEC_INFINITY; |
9a98c7a1 LP |
186 | |
187 | if ((usec_t) tv->tv_sec > (UINT64_MAX - tv->tv_usec) / USEC_PER_SEC) | |
3a43da28 | 188 | return USEC_INFINITY; |
9a98c7a1 LP |
189 | |
190 | return | |
191 | (usec_t) tv->tv_sec * USEC_PER_SEC + | |
192 | (usec_t) tv->tv_usec; | |
193 | } | |
194 | ||
195 | struct timeval *timeval_store(struct timeval *tv, usec_t u) { | |
196 | assert(tv); | |
197 | ||
3a43da28 | 198 | if (u == USEC_INFINITY) { |
9a98c7a1 LP |
199 | tv->tv_sec = (time_t) -1; |
200 | tv->tv_usec = (suseconds_t) -1; | |
4d89874a ZJS |
201 | } else { |
202 | tv->tv_sec = (time_t) (u / USEC_PER_SEC); | |
203 | tv->tv_usec = (suseconds_t) (u % USEC_PER_SEC); | |
9a98c7a1 LP |
204 | } |
205 | ||
9a98c7a1 LP |
206 | return tv; |
207 | } | |
208 | ||
0056086a AK |
209 | static char *format_timestamp_internal(char *buf, size_t l, usec_t t, |
210 | bool utc, bool us) { | |
9a98c7a1 LP |
211 | struct tm tm; |
212 | time_t sec; | |
0056086a | 213 | int k; |
9a98c7a1 LP |
214 | |
215 | assert(buf); | |
216 | assert(l > 0); | |
217 | ||
3a43da28 | 218 | if (t <= 0 || t == USEC_INFINITY) |
9a98c7a1 LP |
219 | return NULL; |
220 | ||
221 | sec = (time_t) (t / USEC_PER_SEC); | |
7c67c79c | 222 | localtime_or_gmtime_r(&sec, &tm, utc); |
9a98c7a1 | 223 | |
0056086a AK |
224 | if (us) |
225 | k = strftime(buf, l, "%a %Y-%m-%d %H:%M:%S", &tm); | |
226 | else | |
227 | k = strftime(buf, l, "%a %Y-%m-%d %H:%M:%S %Z", &tm); | |
228 | ||
229 | if (k <= 0) | |
9a98c7a1 | 230 | return NULL; |
0056086a AK |
231 | if (us) { |
232 | snprintf(buf + strlen(buf), l - strlen(buf), ".%06llu", (unsigned long long) (t % USEC_PER_SEC)); | |
233 | if (strftime(buf + strlen(buf), l - strlen(buf), " %Z", &tm) <= 0) | |
234 | return NULL; | |
235 | } | |
9a98c7a1 LP |
236 | |
237 | return buf; | |
238 | } | |
239 | ||
a62e83b4 | 240 | char *format_timestamp(char *buf, size_t l, usec_t t) { |
0056086a | 241 | return format_timestamp_internal(buf, l, t, false, false); |
a62e83b4 JS |
242 | } |
243 | ||
5ab99e07 | 244 | char *format_timestamp_utc(char *buf, size_t l, usec_t t) { |
0056086a | 245 | return format_timestamp_internal(buf, l, t, true, false); |
f02d8367 ZJS |
246 | } |
247 | ||
5ab99e07 | 248 | char *format_timestamp_us(char *buf, size_t l, usec_t t) { |
0056086a | 249 | return format_timestamp_internal(buf, l, t, false, true); |
5ab99e07 LP |
250 | } |
251 | ||
252 | char *format_timestamp_us_utc(char *buf, size_t l, usec_t t) { | |
0056086a | 253 | return format_timestamp_internal(buf, l, t, true, true); |
5ab99e07 LP |
254 | } |
255 | ||
bbb8486e | 256 | char *format_timestamp_relative(char *buf, size_t l, usec_t t) { |
1fcf71f5 | 257 | const char *s; |
9a98c7a1 LP |
258 | usec_t n, d; |
259 | ||
65de0395 | 260 | if (t <= 0 || t == USEC_INFINITY) |
9a98c7a1 LP |
261 | return NULL; |
262 | ||
65de0395 | 263 | n = now(CLOCK_REALTIME); |
1fcf71f5 LP |
264 | if (n > t) { |
265 | d = n - t; | |
266 | s = "ago"; | |
267 | } else { | |
268 | d = t - n; | |
269 | s = "left"; | |
270 | } | |
9a98c7a1 LP |
271 | |
272 | if (d >= USEC_PER_YEAR) | |
609e002e | 273 | snprintf(buf, l, USEC_FMT " years " USEC_FMT " months %s", |
de0671ee ZJS |
274 | d / USEC_PER_YEAR, |
275 | (d % USEC_PER_YEAR) / USEC_PER_MONTH, s); | |
9a98c7a1 | 276 | else if (d >= USEC_PER_MONTH) |
609e002e | 277 | snprintf(buf, l, USEC_FMT " months " USEC_FMT " days %s", |
de0671ee ZJS |
278 | d / USEC_PER_MONTH, |
279 | (d % USEC_PER_MONTH) / USEC_PER_DAY, s); | |
9a98c7a1 | 280 | else if (d >= USEC_PER_WEEK) |
609e002e | 281 | snprintf(buf, l, USEC_FMT " weeks " USEC_FMT " days %s", |
de0671ee ZJS |
282 | d / USEC_PER_WEEK, |
283 | (d % USEC_PER_WEEK) / USEC_PER_DAY, s); | |
9a98c7a1 | 284 | else if (d >= 2*USEC_PER_DAY) |
609e002e | 285 | snprintf(buf, l, USEC_FMT " days %s", d / USEC_PER_DAY, s); |
9a98c7a1 | 286 | else if (d >= 25*USEC_PER_HOUR) |
609e002e | 287 | snprintf(buf, l, "1 day " USEC_FMT "h %s", |
de0671ee | 288 | (d - USEC_PER_DAY) / USEC_PER_HOUR, s); |
9a98c7a1 | 289 | else if (d >= 6*USEC_PER_HOUR) |
609e002e | 290 | snprintf(buf, l, USEC_FMT "h %s", |
de0671ee | 291 | d / USEC_PER_HOUR, s); |
9a98c7a1 | 292 | else if (d >= USEC_PER_HOUR) |
609e002e | 293 | snprintf(buf, l, USEC_FMT "h " USEC_FMT "min %s", |
de0671ee ZJS |
294 | d / USEC_PER_HOUR, |
295 | (d % USEC_PER_HOUR) / USEC_PER_MINUTE, s); | |
9a98c7a1 | 296 | else if (d >= 5*USEC_PER_MINUTE) |
609e002e | 297 | snprintf(buf, l, USEC_FMT "min %s", |
de0671ee | 298 | d / USEC_PER_MINUTE, s); |
9a98c7a1 | 299 | else if (d >= USEC_PER_MINUTE) |
609e002e | 300 | snprintf(buf, l, USEC_FMT "min " USEC_FMT "s %s", |
de0671ee ZJS |
301 | d / USEC_PER_MINUTE, |
302 | (d % USEC_PER_MINUTE) / USEC_PER_SEC, s); | |
9a98c7a1 | 303 | else if (d >= USEC_PER_SEC) |
609e002e | 304 | snprintf(buf, l, USEC_FMT "s %s", |
de0671ee | 305 | d / USEC_PER_SEC, s); |
9a98c7a1 | 306 | else if (d >= USEC_PER_MSEC) |
609e002e | 307 | snprintf(buf, l, USEC_FMT "ms %s", |
de0671ee | 308 | d / USEC_PER_MSEC, s); |
9a98c7a1 | 309 | else if (d > 0) |
de0671ee ZJS |
310 | snprintf(buf, l, USEC_FMT"us %s", |
311 | d, s); | |
9a98c7a1 LP |
312 | else |
313 | snprintf(buf, l, "now"); | |
314 | ||
315 | buf[l-1] = 0; | |
316 | return buf; | |
317 | } | |
318 | ||
2fa4092c | 319 | char *format_timespan(char *buf, size_t l, usec_t t, usec_t accuracy) { |
9a98c7a1 LP |
320 | static const struct { |
321 | const char *suffix; | |
322 | usec_t usec; | |
323 | } table[] = { | |
eb55ec9f LP |
324 | { "y", USEC_PER_YEAR }, |
325 | { "month", USEC_PER_MONTH }, | |
326 | { "w", USEC_PER_WEEK }, | |
327 | { "d", USEC_PER_DAY }, | |
328 | { "h", USEC_PER_HOUR }, | |
329 | { "min", USEC_PER_MINUTE }, | |
330 | { "s", USEC_PER_SEC }, | |
331 | { "ms", USEC_PER_MSEC }, | |
332 | { "us", 1 }, | |
9a98c7a1 LP |
333 | }; |
334 | ||
335 | unsigned i; | |
336 | char *p = buf; | |
2fa4092c | 337 | bool something = false; |
9a98c7a1 LP |
338 | |
339 | assert(buf); | |
340 | assert(l > 0); | |
341 | ||
bb1fada8 LP |
342 | if (t == USEC_INFINITY) { |
343 | strncpy(p, "infinity", l-1); | |
344 | p[l-1] = 0; | |
345 | return p; | |
346 | } | |
347 | ||
348 | if (t <= 0) { | |
349 | strncpy(p, "0", l-1); | |
7c537b2e LP |
350 | p[l-1] = 0; |
351 | return p; | |
352 | } | |
353 | ||
7f602784 | 354 | /* The result of this function can be parsed with parse_sec */ |
9a98c7a1 LP |
355 | |
356 | for (i = 0; i < ELEMENTSOF(table); i++) { | |
7759ecb2 | 357 | int k = 0; |
9a98c7a1 | 358 | size_t n; |
2fa4092c LP |
359 | bool done = false; |
360 | usec_t a, b; | |
361 | ||
7c537b2e LP |
362 | if (t <= 0) |
363 | break; | |
2fa4092c | 364 | |
7c537b2e | 365 | if (t < accuracy && something) |
2fa4092c | 366 | break; |
9a98c7a1 LP |
367 | |
368 | if (t < table[i].usec) | |
369 | continue; | |
370 | ||
371 | if (l <= 1) | |
372 | break; | |
373 | ||
2fa4092c LP |
374 | a = t / table[i].usec; |
375 | b = t % table[i].usec; | |
376 | ||
377 | /* Let's see if we should shows this in dot notation */ | |
378 | if (t < USEC_PER_MINUTE && b > 0) { | |
379 | usec_t cc; | |
380 | int j; | |
381 | ||
382 | j = 0; | |
383 | for (cc = table[i].usec; cc > 1; cc /= 10) | |
384 | j++; | |
385 | ||
386 | for (cc = accuracy; cc > 1; cc /= 10) { | |
387 | b /= 10; | |
388 | j--; | |
389 | } | |
390 | ||
391 | if (j > 0) { | |
392 | k = snprintf(p, l, | |
de0671ee | 393 | "%s"USEC_FMT".%0*llu%s", |
2fa4092c | 394 | p > buf ? " " : "", |
de0671ee | 395 | a, |
2fa4092c LP |
396 | j, |
397 | (unsigned long long) b, | |
398 | table[i].suffix); | |
399 | ||
400 | t = 0; | |
401 | done = true; | |
402 | } | |
403 | } | |
404 | ||
405 | /* No? Then let's show it normally */ | |
406 | if (!done) { | |
407 | k = snprintf(p, l, | |
de0671ee | 408 | "%s"USEC_FMT"%s", |
2fa4092c | 409 | p > buf ? " " : "", |
de0671ee | 410 | a, |
2fa4092c LP |
411 | table[i].suffix); |
412 | ||
413 | t = b; | |
414 | } | |
415 | ||
9a98c7a1 LP |
416 | n = MIN((size_t) k, l); |
417 | ||
418 | l -= n; | |
419 | p += n; | |
420 | ||
2fa4092c | 421 | something = true; |
9a98c7a1 LP |
422 | } |
423 | ||
424 | *p = 0; | |
425 | ||
426 | return buf; | |
427 | } | |
428 | ||
429 | void dual_timestamp_serialize(FILE *f, const char *name, dual_timestamp *t) { | |
430 | ||
431 | assert(f); | |
432 | assert(name); | |
433 | assert(t); | |
434 | ||
435 | if (!dual_timestamp_is_set(t)) | |
436 | return; | |
437 | ||
de0671ee | 438 | fprintf(f, "%s="USEC_FMT" "USEC_FMT"\n", |
9a98c7a1 | 439 | name, |
de0671ee ZJS |
440 | t->realtime, |
441 | t->monotonic); | |
9a98c7a1 LP |
442 | } |
443 | ||
e911de99 | 444 | int dual_timestamp_deserialize(const char *value, dual_timestamp *t) { |
9a98c7a1 LP |
445 | unsigned long long a, b; |
446 | ||
447 | assert(value); | |
448 | assert(t); | |
449 | ||
e911de99 | 450 | if (sscanf(value, "%llu %llu", &a, &b) != 2) { |
b895a735 | 451 | log_debug("Failed to parse dual timestamp value \"%s\": %m", value); |
e911de99 | 452 | return -EINVAL; |
9a98c7a1 | 453 | } |
e911de99 LP |
454 | |
455 | t->realtime = a; | |
456 | t->monotonic = b; | |
457 | ||
458 | return 0; | |
9a98c7a1 LP |
459 | } |
460 | ||
b895a735 | 461 | int timestamp_deserialize(const char *value, usec_t *timestamp) { |
ebf30a08 AK |
462 | int r; |
463 | ||
464 | assert(value); | |
465 | ||
466 | r = safe_atou64(value, timestamp); | |
ebf30a08 | 467 | if (r < 0) |
b895a735 | 468 | return log_debug_errno(r, "Failed to parse timestamp value \"%s\": %m", value); |
ebf30a08 AK |
469 | |
470 | return r; | |
471 | } | |
472 | ||
9a98c7a1 | 473 | int parse_timestamp(const char *t, usec_t *usec) { |
92134489 LP |
474 | static const struct { |
475 | const char *name; | |
476 | const int nr; | |
477 | } day_nr[] = { | |
478 | { "Sunday", 0 }, | |
479 | { "Sun", 0 }, | |
480 | { "Monday", 1 }, | |
481 | { "Mon", 1 }, | |
482 | { "Tuesday", 2 }, | |
483 | { "Tue", 2 }, | |
484 | { "Wednesday", 3 }, | |
485 | { "Wed", 3 }, | |
486 | { "Thursday", 4 }, | |
487 | { "Thu", 4 }, | |
488 | { "Friday", 5 }, | |
489 | { "Fri", 5 }, | |
490 | { "Saturday", 6 }, | |
491 | { "Sat", 6 }, | |
492 | }; | |
493 | ||
9a98c7a1 | 494 | const char *k; |
078efddd | 495 | const char *utc; |
9a98c7a1 LP |
496 | struct tm tm, copy; |
497 | time_t x; | |
e4eaf99a | 498 | usec_t x_usec, plus = 0, minus = 0, ret; |
92134489 LP |
499 | int r, weekday = -1; |
500 | unsigned i; | |
9a98c7a1 LP |
501 | |
502 | /* | |
503 | * Allowed syntaxes: | |
504 | * | |
505 | * 2012-09-22 16:34:22 | |
506 | * 2012-09-22 16:34 (seconds will be set to 0) | |
507 | * 2012-09-22 (time will be set to 00:00:00) | |
508 | * 16:34:22 (date will be set to today) | |
509 | * 16:34 (date will be set to today, seconds to 0) | |
510 | * now | |
511 | * yesterday (time is set to 00:00:00) | |
512 | * today (time is set to 00:00:00) | |
513 | * tomorrow (time is set to 00:00:00) | |
514 | * +5min | |
515 | * -5days | |
5ba6e094 | 516 | * @2147483647 (seconds since epoch) |
9a98c7a1 LP |
517 | * |
518 | */ | |
519 | ||
520 | assert(t); | |
521 | assert(usec); | |
522 | ||
e4eaf99a HV |
523 | if (t[0] == '@') |
524 | return parse_sec(t + 1, usec); | |
9a98c7a1 | 525 | |
e4eaf99a | 526 | ret = now(CLOCK_REALTIME); |
9a98c7a1 | 527 | |
e4eaf99a | 528 | if (streq(t, "now")) |
9a98c7a1 LP |
529 | goto finish; |
530 | ||
e4eaf99a | 531 | else if (t[0] == '+') { |
7f602784 | 532 | r = parse_sec(t+1, &plus); |
9a98c7a1 LP |
533 | if (r < 0) |
534 | return r; | |
535 | ||
536 | goto finish; | |
9a98c7a1 | 537 | |
5ba6e094 | 538 | } else if (t[0] == '-') { |
7f602784 | 539 | r = parse_sec(t+1, &minus); |
9a98c7a1 LP |
540 | if (r < 0) |
541 | return r; | |
542 | ||
543 | goto finish; | |
decad910 | 544 | |
078efddd HV |
545 | } else if ((k = endswith(t, " ago"))) { |
546 | t = strndupa(t, k - t); | |
decad910 | 547 | |
e4eaf99a | 548 | r = parse_sec(t, &minus); |
decad910 LP |
549 | if (r < 0) |
550 | return r; | |
551 | ||
1fcf71f5 | 552 | goto finish; |
1fcf71f5 | 553 | |
078efddd HV |
554 | } else if ((k = endswith(t, " left"))) { |
555 | t = strndupa(t, k - t); | |
1fcf71f5 | 556 | |
e4eaf99a | 557 | r = parse_sec(t, &plus); |
1fcf71f5 LP |
558 | if (r < 0) |
559 | return r; | |
560 | ||
decad910 | 561 | goto finish; |
9a98c7a1 LP |
562 | } |
563 | ||
e4eaf99a HV |
564 | utc = endswith_no_case(t, " UTC"); |
565 | if (utc) | |
078efddd | 566 | t = strndupa(t, utc - t); |
e4eaf99a HV |
567 | |
568 | x = ret / USEC_PER_SEC; | |
569 | x_usec = 0; | |
570 | ||
571 | assert_se(localtime_or_gmtime_r(&x, &tm, utc)); | |
572 | tm.tm_isdst = -1; | |
573 | ||
574 | if (streq(t, "today")) { | |
575 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
576 | goto from_tm; | |
577 | ||
578 | } else if (streq(t, "yesterday")) { | |
313cefa1 | 579 | tm.tm_mday--; |
e4eaf99a HV |
580 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; |
581 | goto from_tm; | |
582 | ||
583 | } else if (streq(t, "tomorrow")) { | |
313cefa1 | 584 | tm.tm_mday++; |
e4eaf99a HV |
585 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; |
586 | goto from_tm; | |
587 | } | |
588 | ||
589 | ||
92134489 LP |
590 | for (i = 0; i < ELEMENTSOF(day_nr); i++) { |
591 | size_t skip; | |
592 | ||
593 | if (!startswith_no_case(t, day_nr[i].name)) | |
594 | continue; | |
595 | ||
596 | skip = strlen(day_nr[i].name); | |
597 | if (t[skip] != ' ') | |
598 | continue; | |
599 | ||
600 | weekday = day_nr[i].nr; | |
601 | t += skip + 1; | |
602 | break; | |
603 | } | |
604 | ||
9a98c7a1 LP |
605 | copy = tm; |
606 | k = strptime(t, "%y-%m-%d %H:%M:%S", &tm); | |
e4eaf99a HV |
607 | if (k) { |
608 | if (*k == '.') | |
609 | goto parse_usec; | |
610 | else if (*k == 0) | |
611 | goto from_tm; | |
612 | } | |
9a98c7a1 LP |
613 | |
614 | tm = copy; | |
615 | k = strptime(t, "%Y-%m-%d %H:%M:%S", &tm); | |
e4eaf99a HV |
616 | if (k) { |
617 | if (*k == '.') | |
618 | goto parse_usec; | |
619 | else if (*k == 0) | |
620 | goto from_tm; | |
621 | } | |
9a98c7a1 LP |
622 | |
623 | tm = copy; | |
624 | k = strptime(t, "%y-%m-%d %H:%M", &tm); | |
625 | if (k && *k == 0) { | |
626 | tm.tm_sec = 0; | |
e4eaf99a | 627 | goto from_tm; |
9a98c7a1 LP |
628 | } |
629 | ||
630 | tm = copy; | |
631 | k = strptime(t, "%Y-%m-%d %H:%M", &tm); | |
632 | if (k && *k == 0) { | |
633 | tm.tm_sec = 0; | |
e4eaf99a | 634 | goto from_tm; |
9a98c7a1 LP |
635 | } |
636 | ||
637 | tm = copy; | |
638 | k = strptime(t, "%y-%m-%d", &tm); | |
639 | if (k && *k == 0) { | |
640 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
e4eaf99a | 641 | goto from_tm; |
9a98c7a1 LP |
642 | } |
643 | ||
644 | tm = copy; | |
645 | k = strptime(t, "%Y-%m-%d", &tm); | |
646 | if (k && *k == 0) { | |
647 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
e4eaf99a | 648 | goto from_tm; |
9a98c7a1 LP |
649 | } |
650 | ||
651 | tm = copy; | |
652 | k = strptime(t, "%H:%M:%S", &tm); | |
e4eaf99a HV |
653 | if (k) { |
654 | if (*k == '.') | |
655 | goto parse_usec; | |
656 | else if (*k == 0) | |
657 | goto from_tm; | |
658 | } | |
9a98c7a1 LP |
659 | |
660 | tm = copy; | |
661 | k = strptime(t, "%H:%M", &tm); | |
662 | if (k && *k == 0) { | |
663 | tm.tm_sec = 0; | |
e4eaf99a | 664 | goto from_tm; |
9a98c7a1 LP |
665 | } |
666 | ||
667 | return -EINVAL; | |
668 | ||
e4eaf99a HV |
669 | parse_usec: |
670 | { | |
436dd70f | 671 | unsigned add; |
e4eaf99a HV |
672 | |
673 | k++; | |
436dd70f HV |
674 | r = parse_fractional_part_u(&k, 6, &add); |
675 | if (r < 0) | |
e4eaf99a HV |
676 | return -EINVAL; |
677 | ||
436dd70f | 678 | if (*k) |
e4eaf99a HV |
679 | return -EINVAL; |
680 | ||
436dd70f | 681 | x_usec = add; |
e4eaf99a | 682 | |
e4eaf99a HV |
683 | } |
684 | ||
685 | from_tm: | |
686 | x = mktime_or_timegm(&tm, utc); | |
9a98c7a1 LP |
687 | if (x == (time_t) -1) |
688 | return -EINVAL; | |
689 | ||
92134489 LP |
690 | if (weekday >= 0 && tm.tm_wday != weekday) |
691 | return -EINVAL; | |
692 | ||
e4eaf99a | 693 | ret = (usec_t) x * USEC_PER_SEC + x_usec; |
9a98c7a1 | 694 | |
e4eaf99a | 695 | finish: |
9a98c7a1 LP |
696 | ret += plus; |
697 | if (ret > minus) | |
698 | ret -= minus; | |
699 | else | |
700 | ret = 0; | |
701 | ||
702 | *usec = ret; | |
703 | ||
704 | return 0; | |
705 | } | |
706 | ||
240a7ba9 | 707 | static char* extract_multiplier(char *p, usec_t *multiplier) { |
9a98c7a1 LP |
708 | static const struct { |
709 | const char *suffix; | |
710 | usec_t usec; | |
711 | } table[] = { | |
eb55ec9f LP |
712 | { "seconds", USEC_PER_SEC }, |
713 | { "second", USEC_PER_SEC }, | |
714 | { "sec", USEC_PER_SEC }, | |
715 | { "s", USEC_PER_SEC }, | |
9a98c7a1 | 716 | { "minutes", USEC_PER_MINUTE }, |
eb55ec9f LP |
717 | { "minute", USEC_PER_MINUTE }, |
718 | { "min", USEC_PER_MINUTE }, | |
719 | { "months", USEC_PER_MONTH }, | |
720 | { "month", USEC_PER_MONTH }, | |
721 | { "M", 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 }, | |
9a98c7a1 | 740 | }; |
240a7ba9 ZJS |
741 | unsigned i; |
742 | ||
743 | for (i = 0; i < ELEMENTSOF(table); i++) { | |
744 | char *e; | |
745 | ||
746 | e = startswith(p, table[i].suffix); | |
747 | if (e) { | |
748 | *multiplier = table[i].usec; | |
749 | return e; | |
750 | } | |
751 | } | |
9a98c7a1 | 752 | |
240a7ba9 ZJS |
753 | return p; |
754 | } | |
755 | ||
756 | int parse_time(const char *t, usec_t *usec, usec_t default_unit) { | |
b1d6dcf5 | 757 | const char *p, *s; |
9a98c7a1 | 758 | usec_t r = 0; |
cb0dac05 | 759 | bool something = false; |
9a98c7a1 LP |
760 | |
761 | assert(t); | |
762 | assert(usec); | |
519cffec | 763 | assert(default_unit > 0); |
9a98c7a1 LP |
764 | |
765 | p = t; | |
b1d6dcf5 ZJS |
766 | |
767 | p += strspn(p, WHITESPACE); | |
768 | s = startswith(p, "infinity"); | |
769 | if (s) { | |
770 | s += strspn(s, WHITESPACE); | |
771 | if (*s != 0) | |
772 | return -EINVAL; | |
773 | ||
774 | *usec = USEC_INFINITY; | |
775 | return 0; | |
776 | } | |
777 | ||
cb0dac05 LP |
778 | for (;;) { |
779 | long long l, z = 0; | |
9a98c7a1 | 780 | char *e; |
240a7ba9 ZJS |
781 | unsigned n = 0; |
782 | usec_t multiplier = default_unit, k; | |
cb0dac05 LP |
783 | |
784 | p += strspn(p, WHITESPACE); | |
785 | ||
786 | if (*p == 0) { | |
787 | if (!something) | |
788 | return -EINVAL; | |
789 | ||
790 | break; | |
791 | } | |
9a98c7a1 LP |
792 | |
793 | errno = 0; | |
794 | l = strtoll(p, &e, 10); | |
8333c77e | 795 | if (errno > 0) |
9a98c7a1 | 796 | return -errno; |
9a98c7a1 LP |
797 | if (l < 0) |
798 | return -ERANGE; | |
799 | ||
cb0dac05 LP |
800 | if (*e == '.') { |
801 | char *b = e + 1; | |
802 | ||
803 | errno = 0; | |
804 | z = strtoll(b, &e, 10); | |
805 | if (errno > 0) | |
806 | return -errno; | |
807 | ||
808 | if (z < 0) | |
809 | return -ERANGE; | |
810 | ||
811 | if (e == b) | |
812 | return -EINVAL; | |
813 | ||
814 | n = e - b; | |
815 | ||
816 | } else if (e == p) | |
9a98c7a1 LP |
817 | return -EINVAL; |
818 | ||
819 | e += strspn(e, WHITESPACE); | |
240a7ba9 | 820 | p = extract_multiplier(e, &multiplier); |
9a98c7a1 | 821 | |
519cffec LP |
822 | something = true; |
823 | ||
824 | k = (usec_t) z * multiplier; | |
825 | ||
826 | for (; n > 0; n--) | |
827 | k /= 10; | |
828 | ||
829 | r += (usec_t) l * multiplier + k; | |
cb0dac05 | 830 | } |
9a98c7a1 LP |
831 | |
832 | *usec = r; | |
833 | ||
834 | return 0; | |
835 | } | |
836 | ||
519cffec LP |
837 | int parse_sec(const char *t, usec_t *usec) { |
838 | return parse_time(t, usec, USEC_PER_SEC); | |
839 | } | |
840 | ||
9a98c7a1 LP |
841 | int parse_nsec(const char *t, nsec_t *nsec) { |
842 | static const struct { | |
843 | const char *suffix; | |
844 | nsec_t nsec; | |
845 | } table[] = { | |
846 | { "seconds", NSEC_PER_SEC }, | |
847 | { "second", NSEC_PER_SEC }, | |
848 | { "sec", NSEC_PER_SEC }, | |
849 | { "s", NSEC_PER_SEC }, | |
850 | { "minutes", NSEC_PER_MINUTE }, | |
851 | { "minute", NSEC_PER_MINUTE }, | |
852 | { "min", NSEC_PER_MINUTE }, | |
853 | { "months", NSEC_PER_MONTH }, | |
854 | { "month", NSEC_PER_MONTH }, | |
855 | { "msec", NSEC_PER_MSEC }, | |
856 | { "ms", NSEC_PER_MSEC }, | |
857 | { "m", NSEC_PER_MINUTE }, | |
858 | { "hours", NSEC_PER_HOUR }, | |
859 | { "hour", NSEC_PER_HOUR }, | |
860 | { "hr", NSEC_PER_HOUR }, | |
861 | { "h", NSEC_PER_HOUR }, | |
862 | { "days", NSEC_PER_DAY }, | |
863 | { "day", NSEC_PER_DAY }, | |
864 | { "d", NSEC_PER_DAY }, | |
865 | { "weeks", NSEC_PER_WEEK }, | |
866 | { "week", NSEC_PER_WEEK }, | |
867 | { "w", NSEC_PER_WEEK }, | |
868 | { "years", NSEC_PER_YEAR }, | |
869 | { "year", NSEC_PER_YEAR }, | |
870 | { "y", NSEC_PER_YEAR }, | |
871 | { "usec", NSEC_PER_USEC }, | |
872 | { "us", NSEC_PER_USEC }, | |
873 | { "nsec", 1ULL }, | |
874 | { "ns", 1ULL }, | |
875 | { "", 1ULL }, /* default is nsec */ | |
876 | }; | |
877 | ||
e73c78c2 | 878 | const char *p, *s; |
9a98c7a1 | 879 | nsec_t r = 0; |
cb0dac05 | 880 | bool something = false; |
9a98c7a1 LP |
881 | |
882 | assert(t); | |
883 | assert(nsec); | |
884 | ||
885 | p = t; | |
e73c78c2 LP |
886 | |
887 | p += strspn(p, WHITESPACE); | |
888 | s = startswith(p, "infinity"); | |
889 | if (s) { | |
890 | s += strspn(s, WHITESPACE); | |
8e8933ca | 891 | if (*s != 0) |
e73c78c2 LP |
892 | return -EINVAL; |
893 | ||
894 | *nsec = NSEC_INFINITY; | |
895 | return 0; | |
896 | } | |
897 | ||
cb0dac05 LP |
898 | for (;;) { |
899 | long long l, z = 0; | |
9a98c7a1 | 900 | char *e; |
cb0dac05 LP |
901 | unsigned i, n = 0; |
902 | ||
903 | p += strspn(p, WHITESPACE); | |
904 | ||
905 | if (*p == 0) { | |
906 | if (!something) | |
907 | return -EINVAL; | |
908 | ||
909 | break; | |
910 | } | |
9a98c7a1 LP |
911 | |
912 | errno = 0; | |
913 | l = strtoll(p, &e, 10); | |
914 | ||
8333c77e | 915 | if (errno > 0) |
9a98c7a1 LP |
916 | return -errno; |
917 | ||
918 | if (l < 0) | |
919 | return -ERANGE; | |
920 | ||
cb0dac05 LP |
921 | if (*e == '.') { |
922 | char *b = e + 1; | |
923 | ||
924 | errno = 0; | |
925 | z = strtoll(b, &e, 10); | |
926 | if (errno > 0) | |
927 | return -errno; | |
928 | ||
929 | if (z < 0) | |
930 | return -ERANGE; | |
931 | ||
932 | if (e == b) | |
933 | return -EINVAL; | |
934 | ||
935 | n = e - b; | |
936 | ||
937 | } else if (e == p) | |
9a98c7a1 LP |
938 | return -EINVAL; |
939 | ||
940 | e += strspn(e, WHITESPACE); | |
941 | ||
942 | for (i = 0; i < ELEMENTSOF(table); i++) | |
943 | if (startswith(e, table[i].suffix)) { | |
cb0dac05 LP |
944 | nsec_t k = (nsec_t) z * table[i].nsec; |
945 | ||
946 | for (; n > 0; n--) | |
947 | k /= 10; | |
948 | ||
949 | r += (nsec_t) l * table[i].nsec + k; | |
9a98c7a1 | 950 | p = e + strlen(table[i].suffix); |
cb0dac05 LP |
951 | |
952 | something = true; | |
9a98c7a1 LP |
953 | break; |
954 | } | |
955 | ||
956 | if (i >= ELEMENTSOF(table)) | |
957 | return -EINVAL; | |
958 | ||
cb0dac05 | 959 | } |
9a98c7a1 LP |
960 | |
961 | *nsec = r; | |
962 | ||
963 | return 0; | |
964 | } | |
03cc26dd LP |
965 | |
966 | bool ntp_synced(void) { | |
967 | struct timex txc = {}; | |
968 | ||
969 | if (adjtimex(&txc) < 0) | |
970 | return false; | |
971 | ||
972 | if (txc.status & STA_UNSYNC) | |
973 | return false; | |
974 | ||
975 | return true; | |
976 | } | |
75683450 LP |
977 | |
978 | int get_timezones(char ***ret) { | |
979 | _cleanup_fclose_ FILE *f = NULL; | |
980 | _cleanup_strv_free_ char **zones = NULL; | |
981 | size_t n_zones = 0, n_allocated = 0; | |
982 | ||
983 | assert(ret); | |
984 | ||
985 | zones = strv_new("UTC", NULL); | |
986 | if (!zones) | |
987 | return -ENOMEM; | |
988 | ||
989 | n_allocated = 2; | |
990 | n_zones = 1; | |
991 | ||
992 | f = fopen("/usr/share/zoneinfo/zone.tab", "re"); | |
993 | if (f) { | |
994 | char l[LINE_MAX]; | |
995 | ||
996 | FOREACH_LINE(l, f, return -errno) { | |
997 | char *p, *w; | |
998 | size_t k; | |
999 | ||
1000 | p = strstrip(l); | |
1001 | ||
1002 | if (isempty(p) || *p == '#') | |
1003 | continue; | |
1004 | ||
1005 | /* Skip over country code */ | |
1006 | p += strcspn(p, WHITESPACE); | |
1007 | p += strspn(p, WHITESPACE); | |
1008 | ||
1009 | /* Skip over coordinates */ | |
1010 | p += strcspn(p, WHITESPACE); | |
1011 | p += strspn(p, WHITESPACE); | |
1012 | ||
1013 | /* Found timezone name */ | |
1014 | k = strcspn(p, WHITESPACE); | |
1015 | if (k <= 0) | |
1016 | continue; | |
1017 | ||
1018 | w = strndup(p, k); | |
1019 | if (!w) | |
1020 | return -ENOMEM; | |
1021 | ||
1022 | if (!GREEDY_REALLOC(zones, n_allocated, n_zones + 2)) { | |
1023 | free(w); | |
1024 | return -ENOMEM; | |
1025 | } | |
1026 | ||
1027 | zones[n_zones++] = w; | |
1028 | zones[n_zones] = NULL; | |
1029 | } | |
1030 | ||
1031 | strv_sort(zones); | |
1032 | ||
1033 | } else if (errno != ENOENT) | |
1034 | return -errno; | |
1035 | ||
1036 | *ret = zones; | |
1037 | zones = NULL; | |
1038 | ||
1039 | return 0; | |
1040 | } | |
1041 | ||
1042 | bool timezone_is_valid(const char *name) { | |
1043 | bool slash = false; | |
1044 | const char *p, *t; | |
1045 | struct stat st; | |
1046 | ||
5c904ba5 LP |
1047 | if (isempty(name)) |
1048 | return false; | |
1049 | ||
1050 | if (name[0] == '/') | |
75683450 LP |
1051 | return false; |
1052 | ||
1053 | for (p = name; *p; p++) { | |
1054 | if (!(*p >= '0' && *p <= '9') && | |
1055 | !(*p >= 'a' && *p <= 'z') && | |
1056 | !(*p >= 'A' && *p <= 'Z') && | |
1057 | !(*p == '-' || *p == '_' || *p == '+' || *p == '/')) | |
1058 | return false; | |
1059 | ||
1060 | if (*p == '/') { | |
1061 | ||
1062 | if (slash) | |
1063 | return false; | |
1064 | ||
1065 | slash = true; | |
1066 | } else | |
1067 | slash = false; | |
1068 | } | |
1069 | ||
1070 | if (slash) | |
1071 | return false; | |
1072 | ||
63c372cb | 1073 | t = strjoina("/usr/share/zoneinfo/", name); |
75683450 LP |
1074 | if (stat(t, &st) < 0) |
1075 | return false; | |
1076 | ||
1077 | if (!S_ISREG(st.st_mode)) | |
1078 | return false; | |
1079 | ||
1080 | return true; | |
1081 | } | |
77ff2de9 | 1082 | |
3411372e LP |
1083 | bool clock_boottime_supported(void) { |
1084 | static int supported = -1; | |
1085 | ||
1086 | /* Note that this checks whether CLOCK_BOOTTIME is available in general as well as available for timerfds()! */ | |
1087 | ||
1088 | if (supported < 0) { | |
1089 | int fd; | |
1090 | ||
1091 | fd = timerfd_create(CLOCK_BOOTTIME, TFD_NONBLOCK|TFD_CLOEXEC); | |
1092 | if (fd < 0) | |
1093 | supported = false; | |
1094 | else { | |
1095 | safe_close(fd); | |
1096 | supported = true; | |
1097 | } | |
77ff2de9 TG |
1098 | } |
1099 | ||
3411372e LP |
1100 | return supported; |
1101 | } | |
1102 | ||
1103 | clockid_t clock_boottime_or_monotonic(void) { | |
1104 | if (clock_boottime_supported()) | |
1105 | return CLOCK_BOOTTIME; | |
1106 | else | |
1107 | return CLOCK_MONOTONIC; | |
77ff2de9 | 1108 | } |
5c904ba5 | 1109 | |
64d6c229 | 1110 | int get_timezone(char **tz) { |
5c904ba5 LP |
1111 | _cleanup_free_ char *t = NULL; |
1112 | const char *e; | |
1113 | char *z; | |
1114 | int r; | |
1115 | ||
1116 | r = readlink_malloc("/etc/localtime", &t); | |
1117 | if (r < 0) | |
1118 | return r; /* returns EINVAL if not a symlink */ | |
1119 | ||
1120 | e = path_startswith(t, "/usr/share/zoneinfo/"); | |
1121 | if (!e) | |
1122 | e = path_startswith(t, "../usr/share/zoneinfo/"); | |
1123 | if (!e) | |
1124 | return -EINVAL; | |
1125 | ||
1126 | if (!timezone_is_valid(e)) | |
1127 | return -EINVAL; | |
1128 | ||
1129 | z = strdup(e); | |
1130 | if (!z) | |
1131 | return -ENOMEM; | |
1132 | ||
64d6c229 | 1133 | *tz = z; |
5c904ba5 LP |
1134 | return 0; |
1135 | } | |
7c67c79c HV |
1136 | |
1137 | time_t mktime_or_timegm(struct tm *tm, bool utc) { | |
1138 | return utc ? timegm(tm) : mktime(tm); | |
1139 | } | |
1140 | ||
1141 | struct tm *localtime_or_gmtime_r(const time_t *t, struct tm *tm, bool utc) { | |
1142 | return utc ? gmtime_r(t, tm) : localtime_r(t, tm); | |
1143 | } | |
87b8ce69 SS |
1144 | |
1145 | unsigned long usec_to_jiffies(usec_t u) { | |
1146 | static thread_local unsigned long hz = 0; | |
1147 | long r; | |
1148 | ||
1149 | if (hz == 0) { | |
1150 | r = sysconf(_SC_CLK_TCK); | |
1151 | ||
1152 | assert(r > 0); | |
1153 | hz = (unsigned long) r; | |
1154 | } | |
1155 | ||
1156 | return DIV_ROUND_UP(u , USEC_PER_SEC / hz); | |
1157 | } |