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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 | ||
22 | #include <time.h> | |
23 | #include <string.h> | |
24 | ||
25 | #include "util.h" | |
26 | #include "time-util.h" | |
27 | ||
28 | usec_t now(clockid_t clock_id) { | |
29 | struct timespec ts; | |
30 | ||
31 | assert_se(clock_gettime(clock_id, &ts) == 0); | |
32 | ||
33 | return timespec_load(&ts); | |
34 | } | |
35 | ||
36 | dual_timestamp* dual_timestamp_get(dual_timestamp *ts) { | |
37 | assert(ts); | |
38 | ||
39 | ts->realtime = now(CLOCK_REALTIME); | |
40 | ts->monotonic = now(CLOCK_MONOTONIC); | |
41 | ||
42 | return ts; | |
43 | } | |
44 | ||
45 | dual_timestamp* dual_timestamp_from_realtime(dual_timestamp *ts, usec_t u) { | |
46 | int64_t delta; | |
47 | assert(ts); | |
48 | ||
cae0c5e0 LP |
49 | if (u == (usec_t) -1) { |
50 | ts->realtime = ts->monotonic = (usec_t) -1; | |
51 | return ts; | |
52 | } | |
53 | ||
9a98c7a1 LP |
54 | ts->realtime = u; |
55 | ||
56 | if (u == 0) | |
57 | ts->monotonic = 0; | |
58 | else { | |
59 | delta = (int64_t) now(CLOCK_REALTIME) - (int64_t) u; | |
60 | ||
61 | ts->monotonic = now(CLOCK_MONOTONIC); | |
62 | ||
63 | if ((int64_t) ts->monotonic > delta) | |
64 | ts->monotonic -= delta; | |
65 | else | |
66 | ts->monotonic = 0; | |
67 | } | |
68 | ||
69 | return ts; | |
70 | } | |
71 | ||
cae0c5e0 LP |
72 | dual_timestamp* dual_timestamp_from_monotonic(dual_timestamp *ts, usec_t u) { |
73 | int64_t delta; | |
74 | assert(ts); | |
75 | ||
76 | if (u == (usec_t) -1) { | |
77 | ts->realtime = ts->monotonic = (usec_t) -1; | |
78 | return ts; | |
79 | } | |
80 | ||
81 | ts->monotonic = u; | |
82 | delta = (int64_t) now(CLOCK_MONOTONIC) - (int64_t) u; | |
83 | ||
84 | ts->realtime = now(CLOCK_REALTIME); | |
85 | if ((int64_t) ts->realtime > delta) | |
86 | ts->realtime -= delta; | |
87 | else | |
88 | ts->realtime = 0; | |
89 | ||
90 | return ts; | |
91 | } | |
92 | ||
9a98c7a1 LP |
93 | usec_t timespec_load(const struct timespec *ts) { |
94 | assert(ts); | |
95 | ||
96 | if (ts->tv_sec == (time_t) -1 && | |
97 | ts->tv_nsec == (long) -1) | |
98 | return (usec_t) -1; | |
99 | ||
100 | if ((usec_t) ts->tv_sec > (UINT64_MAX - (ts->tv_nsec / NSEC_PER_USEC)) / USEC_PER_SEC) | |
101 | return (usec_t) -1; | |
102 | ||
103 | return | |
104 | (usec_t) ts->tv_sec * USEC_PER_SEC + | |
105 | (usec_t) ts->tv_nsec / NSEC_PER_USEC; | |
106 | } | |
107 | ||
108 | struct timespec *timespec_store(struct timespec *ts, usec_t u) { | |
109 | assert(ts); | |
110 | ||
111 | if (u == (usec_t) -1) { | |
112 | ts->tv_sec = (time_t) -1; | |
113 | ts->tv_nsec = (long) -1; | |
114 | return ts; | |
115 | } | |
116 | ||
117 | ts->tv_sec = (time_t) (u / USEC_PER_SEC); | |
118 | ts->tv_nsec = (long int) ((u % USEC_PER_SEC) * NSEC_PER_USEC); | |
119 | ||
120 | return ts; | |
121 | } | |
122 | ||
123 | usec_t timeval_load(const struct timeval *tv) { | |
124 | assert(tv); | |
125 | ||
126 | if (tv->tv_sec == (time_t) -1 && | |
127 | tv->tv_usec == (suseconds_t) -1) | |
128 | return (usec_t) -1; | |
129 | ||
130 | if ((usec_t) tv->tv_sec > (UINT64_MAX - tv->tv_usec) / USEC_PER_SEC) | |
131 | return (usec_t) -1; | |
132 | ||
133 | return | |
134 | (usec_t) tv->tv_sec * USEC_PER_SEC + | |
135 | (usec_t) tv->tv_usec; | |
136 | } | |
137 | ||
138 | struct timeval *timeval_store(struct timeval *tv, usec_t u) { | |
139 | assert(tv); | |
140 | ||
141 | if (u == (usec_t) -1) { | |
142 | tv->tv_sec = (time_t) -1; | |
143 | tv->tv_usec = (suseconds_t) -1; | |
144 | return tv; | |
145 | } | |
146 | ||
147 | tv->tv_sec = (time_t) (u / USEC_PER_SEC); | |
148 | tv->tv_usec = (suseconds_t) (u % USEC_PER_SEC); | |
149 | ||
150 | return tv; | |
151 | } | |
152 | ||
153 | char *format_timestamp(char *buf, size_t l, usec_t t) { | |
154 | struct tm tm; | |
155 | time_t sec; | |
156 | ||
157 | assert(buf); | |
158 | assert(l > 0); | |
159 | ||
160 | if (t <= 0) | |
161 | return NULL; | |
162 | ||
163 | sec = (time_t) (t / USEC_PER_SEC); | |
164 | ||
165 | if (strftime(buf, l, "%a %Y-%m-%d %H:%M:%S %Z", localtime_r(&sec, &tm)) <= 0) | |
166 | return NULL; | |
167 | ||
168 | return buf; | |
169 | } | |
170 | ||
bbb8486e | 171 | char *format_timestamp_relative(char *buf, size_t l, usec_t t) { |
9a98c7a1 LP |
172 | usec_t n, d; |
173 | ||
174 | n = now(CLOCK_REALTIME); | |
175 | ||
176 | if (t <= 0 || t > n || t + USEC_PER_DAY*7 <= t) | |
177 | return NULL; | |
178 | ||
179 | d = n - t; | |
180 | ||
181 | if (d >= USEC_PER_YEAR) | |
182 | snprintf(buf, l, "%llu years %llu months ago", | |
183 | (unsigned long long) (d / USEC_PER_YEAR), | |
184 | (unsigned long long) ((d % USEC_PER_YEAR) / USEC_PER_MONTH)); | |
185 | else if (d >= USEC_PER_MONTH) | |
186 | snprintf(buf, l, "%llu months %llu days ago", | |
187 | (unsigned long long) (d / USEC_PER_MONTH), | |
188 | (unsigned long long) ((d % USEC_PER_MONTH) / USEC_PER_DAY)); | |
189 | else if (d >= USEC_PER_WEEK) | |
190 | snprintf(buf, l, "%llu weeks %llu days ago", | |
191 | (unsigned long long) (d / USEC_PER_WEEK), | |
192 | (unsigned long long) ((d % USEC_PER_WEEK) / USEC_PER_DAY)); | |
193 | else if (d >= 2*USEC_PER_DAY) | |
194 | snprintf(buf, l, "%llu days ago", (unsigned long long) (d / USEC_PER_DAY)); | |
195 | else if (d >= 25*USEC_PER_HOUR) | |
196 | snprintf(buf, l, "1 day %lluh ago", | |
197 | (unsigned long long) ((d - USEC_PER_DAY) / USEC_PER_HOUR)); | |
198 | else if (d >= 6*USEC_PER_HOUR) | |
199 | snprintf(buf, l, "%lluh ago", | |
200 | (unsigned long long) (d / USEC_PER_HOUR)); | |
201 | else if (d >= USEC_PER_HOUR) | |
202 | snprintf(buf, l, "%lluh %llumin ago", | |
203 | (unsigned long long) (d / USEC_PER_HOUR), | |
204 | (unsigned long long) ((d % USEC_PER_HOUR) / USEC_PER_MINUTE)); | |
205 | else if (d >= 5*USEC_PER_MINUTE) | |
206 | snprintf(buf, l, "%llumin ago", | |
207 | (unsigned long long) (d / USEC_PER_MINUTE)); | |
208 | else if (d >= USEC_PER_MINUTE) | |
209 | snprintf(buf, l, "%llumin %llus ago", | |
210 | (unsigned long long) (d / USEC_PER_MINUTE), | |
211 | (unsigned long long) ((d % USEC_PER_MINUTE) / USEC_PER_SEC)); | |
212 | else if (d >= USEC_PER_SEC) | |
213 | snprintf(buf, l, "%llus ago", | |
214 | (unsigned long long) (d / USEC_PER_SEC)); | |
215 | else if (d >= USEC_PER_MSEC) | |
216 | snprintf(buf, l, "%llums ago", | |
217 | (unsigned long long) (d / USEC_PER_MSEC)); | |
218 | else if (d > 0) | |
219 | snprintf(buf, l, "%lluus ago", | |
220 | (unsigned long long) d); | |
221 | else | |
222 | snprintf(buf, l, "now"); | |
223 | ||
224 | buf[l-1] = 0; | |
225 | return buf; | |
226 | } | |
227 | ||
228 | char *format_timespan(char *buf, size_t l, usec_t t) { | |
229 | static const struct { | |
230 | const char *suffix; | |
231 | usec_t usec; | |
232 | } table[] = { | |
b719810d LP |
233 | { "y", USEC_PER_YEAR }, |
234 | { "month", USEC_PER_MONTH }, | |
9a98c7a1 LP |
235 | { "w", USEC_PER_WEEK }, |
236 | { "d", USEC_PER_DAY }, | |
237 | { "h", USEC_PER_HOUR }, | |
238 | { "min", USEC_PER_MINUTE }, | |
239 | { "s", USEC_PER_SEC }, | |
240 | { "ms", USEC_PER_MSEC }, | |
241 | { "us", 1 }, | |
242 | }; | |
243 | ||
244 | unsigned i; | |
245 | char *p = buf; | |
246 | ||
247 | assert(buf); | |
248 | assert(l > 0); | |
249 | ||
250 | if (t == (usec_t) -1) | |
251 | return NULL; | |
252 | ||
253 | if (t == 0) { | |
254 | snprintf(p, l, "0"); | |
255 | p[l-1] = 0; | |
256 | return p; | |
257 | } | |
258 | ||
7f602784 | 259 | /* The result of this function can be parsed with parse_sec */ |
9a98c7a1 LP |
260 | |
261 | for (i = 0; i < ELEMENTSOF(table); i++) { | |
262 | int k; | |
263 | size_t n; | |
264 | ||
265 | if (t < table[i].usec) | |
266 | continue; | |
267 | ||
268 | if (l <= 1) | |
269 | break; | |
270 | ||
271 | k = snprintf(p, l, "%s%llu%s", p > buf ? " " : "", (unsigned long long) (t / table[i].usec), table[i].suffix); | |
272 | n = MIN((size_t) k, l); | |
273 | ||
274 | l -= n; | |
275 | p += n; | |
276 | ||
277 | t %= table[i].usec; | |
278 | } | |
279 | ||
280 | *p = 0; | |
281 | ||
282 | return buf; | |
283 | } | |
284 | ||
285 | void dual_timestamp_serialize(FILE *f, const char *name, dual_timestamp *t) { | |
286 | ||
287 | assert(f); | |
288 | assert(name); | |
289 | assert(t); | |
290 | ||
291 | if (!dual_timestamp_is_set(t)) | |
292 | return; | |
293 | ||
294 | fprintf(f, "%s=%llu %llu\n", | |
295 | name, | |
296 | (unsigned long long) t->realtime, | |
297 | (unsigned long long) t->monotonic); | |
298 | } | |
299 | ||
300 | void dual_timestamp_deserialize(const char *value, dual_timestamp *t) { | |
301 | unsigned long long a, b; | |
302 | ||
303 | assert(value); | |
304 | assert(t); | |
305 | ||
306 | if (sscanf(value, "%lli %llu", &a, &b) != 2) | |
307 | log_debug("Failed to parse finish timestamp value %s", value); | |
308 | else { | |
309 | t->realtime = a; | |
310 | t->monotonic = b; | |
311 | } | |
312 | } | |
313 | ||
314 | int parse_timestamp(const char *t, usec_t *usec) { | |
92134489 LP |
315 | static const struct { |
316 | const char *name; | |
317 | const int nr; | |
318 | } day_nr[] = { | |
319 | { "Sunday", 0 }, | |
320 | { "Sun", 0 }, | |
321 | { "Monday", 1 }, | |
322 | { "Mon", 1 }, | |
323 | { "Tuesday", 2 }, | |
324 | { "Tue", 2 }, | |
325 | { "Wednesday", 3 }, | |
326 | { "Wed", 3 }, | |
327 | { "Thursday", 4 }, | |
328 | { "Thu", 4 }, | |
329 | { "Friday", 5 }, | |
330 | { "Fri", 5 }, | |
331 | { "Saturday", 6 }, | |
332 | { "Sat", 6 }, | |
333 | }; | |
334 | ||
9a98c7a1 LP |
335 | const char *k; |
336 | struct tm tm, copy; | |
337 | time_t x; | |
338 | usec_t plus = 0, minus = 0, ret; | |
92134489 LP |
339 | int r, weekday = -1; |
340 | unsigned i; | |
9a98c7a1 LP |
341 | |
342 | /* | |
343 | * Allowed syntaxes: | |
344 | * | |
345 | * 2012-09-22 16:34:22 | |
346 | * 2012-09-22 16:34 (seconds will be set to 0) | |
347 | * 2012-09-22 (time will be set to 00:00:00) | |
348 | * 16:34:22 (date will be set to today) | |
349 | * 16:34 (date will be set to today, seconds to 0) | |
350 | * now | |
351 | * yesterday (time is set to 00:00:00) | |
352 | * today (time is set to 00:00:00) | |
353 | * tomorrow (time is set to 00:00:00) | |
354 | * +5min | |
355 | * -5days | |
356 | * | |
357 | */ | |
358 | ||
359 | assert(t); | |
360 | assert(usec); | |
361 | ||
362 | x = time(NULL); | |
363 | assert_se(localtime_r(&x, &tm)); | |
6a741b4a | 364 | tm.tm_isdst = -1; |
9a98c7a1 LP |
365 | |
366 | if (streq(t, "now")) | |
367 | goto finish; | |
368 | ||
369 | else if (streq(t, "today")) { | |
370 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
371 | goto finish; | |
372 | ||
373 | } else if (streq(t, "yesterday")) { | |
374 | tm.tm_mday --; | |
375 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
376 | goto finish; | |
377 | ||
378 | } else if (streq(t, "tomorrow")) { | |
379 | tm.tm_mday ++; | |
380 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
381 | goto finish; | |
382 | ||
383 | } else if (t[0] == '+') { | |
384 | ||
7f602784 | 385 | r = parse_sec(t+1, &plus); |
9a98c7a1 LP |
386 | if (r < 0) |
387 | return r; | |
388 | ||
389 | goto finish; | |
390 | } else if (t[0] == '-') { | |
391 | ||
7f602784 | 392 | r = parse_sec(t+1, &minus); |
9a98c7a1 LP |
393 | if (r < 0) |
394 | return r; | |
395 | ||
396 | goto finish; | |
decad910 LP |
397 | |
398 | } else if (endswith(t, " ago")) { | |
399 | _cleanup_free_ char *z; | |
400 | ||
401 | z = strndup(t, strlen(t) - 4); | |
402 | if (!z) | |
403 | return -ENOMEM; | |
404 | ||
7f602784 | 405 | r = parse_sec(z, &minus); |
decad910 LP |
406 | if (r < 0) |
407 | return r; | |
408 | ||
409 | goto finish; | |
9a98c7a1 LP |
410 | } |
411 | ||
92134489 LP |
412 | for (i = 0; i < ELEMENTSOF(day_nr); i++) { |
413 | size_t skip; | |
414 | ||
415 | if (!startswith_no_case(t, day_nr[i].name)) | |
416 | continue; | |
417 | ||
418 | skip = strlen(day_nr[i].name); | |
419 | if (t[skip] != ' ') | |
420 | continue; | |
421 | ||
422 | weekday = day_nr[i].nr; | |
423 | t += skip + 1; | |
424 | break; | |
425 | } | |
426 | ||
9a98c7a1 LP |
427 | copy = tm; |
428 | k = strptime(t, "%y-%m-%d %H:%M:%S", &tm); | |
429 | if (k && *k == 0) | |
430 | goto finish; | |
431 | ||
432 | tm = copy; | |
433 | k = strptime(t, "%Y-%m-%d %H:%M:%S", &tm); | |
434 | if (k && *k == 0) | |
435 | goto finish; | |
436 | ||
437 | tm = copy; | |
438 | k = strptime(t, "%y-%m-%d %H:%M", &tm); | |
439 | if (k && *k == 0) { | |
440 | tm.tm_sec = 0; | |
441 | goto finish; | |
442 | } | |
443 | ||
444 | tm = copy; | |
445 | k = strptime(t, "%Y-%m-%d %H:%M", &tm); | |
446 | if (k && *k == 0) { | |
447 | tm.tm_sec = 0; | |
448 | goto finish; | |
449 | } | |
450 | ||
451 | tm = copy; | |
452 | k = strptime(t, "%y-%m-%d", &tm); | |
453 | if (k && *k == 0) { | |
454 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
455 | goto finish; | |
456 | } | |
457 | ||
458 | tm = copy; | |
459 | k = strptime(t, "%Y-%m-%d", &tm); | |
460 | if (k && *k == 0) { | |
461 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
462 | goto finish; | |
463 | } | |
464 | ||
465 | tm = copy; | |
466 | k = strptime(t, "%H:%M:%S", &tm); | |
467 | if (k && *k == 0) | |
468 | goto finish; | |
469 | ||
470 | tm = copy; | |
471 | k = strptime(t, "%H:%M", &tm); | |
472 | if (k && *k == 0) { | |
473 | tm.tm_sec = 0; | |
474 | goto finish; | |
475 | } | |
476 | ||
477 | return -EINVAL; | |
478 | ||
479 | finish: | |
480 | x = mktime(&tm); | |
481 | if (x == (time_t) -1) | |
482 | return -EINVAL; | |
483 | ||
92134489 LP |
484 | if (weekday >= 0 && tm.tm_wday != weekday) |
485 | return -EINVAL; | |
486 | ||
9a98c7a1 LP |
487 | ret = (usec_t) x * USEC_PER_SEC; |
488 | ||
489 | ret += plus; | |
490 | if (ret > minus) | |
491 | ret -= minus; | |
492 | else | |
493 | ret = 0; | |
494 | ||
495 | *usec = ret; | |
496 | ||
497 | return 0; | |
498 | } | |
499 | ||
7f602784 | 500 | int parse_sec(const char *t, usec_t *usec) { |
9a98c7a1 LP |
501 | static const struct { |
502 | const char *suffix; | |
503 | usec_t usec; | |
504 | } table[] = { | |
505 | { "seconds", USEC_PER_SEC }, | |
506 | { "second", USEC_PER_SEC }, | |
507 | { "sec", USEC_PER_SEC }, | |
508 | { "s", USEC_PER_SEC }, | |
509 | { "minutes", USEC_PER_MINUTE }, | |
510 | { "minute", USEC_PER_MINUTE }, | |
511 | { "min", USEC_PER_MINUTE }, | |
512 | { "months", USEC_PER_MONTH }, | |
513 | { "month", USEC_PER_MONTH }, | |
514 | { "msec", USEC_PER_MSEC }, | |
515 | { "ms", USEC_PER_MSEC }, | |
516 | { "m", USEC_PER_MINUTE }, | |
517 | { "hours", USEC_PER_HOUR }, | |
518 | { "hour", USEC_PER_HOUR }, | |
519 | { "hr", USEC_PER_HOUR }, | |
520 | { "h", USEC_PER_HOUR }, | |
521 | { "days", USEC_PER_DAY }, | |
522 | { "day", USEC_PER_DAY }, | |
523 | { "d", USEC_PER_DAY }, | |
524 | { "weeks", USEC_PER_WEEK }, | |
525 | { "week", USEC_PER_WEEK }, | |
526 | { "w", USEC_PER_WEEK }, | |
527 | { "years", USEC_PER_YEAR }, | |
528 | { "year", USEC_PER_YEAR }, | |
529 | { "y", USEC_PER_YEAR }, | |
530 | { "usec", 1ULL }, | |
531 | { "us", 1ULL }, | |
532 | { "", USEC_PER_SEC }, /* default is sec */ | |
533 | }; | |
534 | ||
535 | const char *p; | |
536 | usec_t r = 0; | |
537 | ||
538 | assert(t); | |
539 | assert(usec); | |
540 | ||
541 | p = t; | |
542 | do { | |
543 | long long l; | |
544 | char *e; | |
545 | unsigned i; | |
546 | ||
547 | errno = 0; | |
548 | l = strtoll(p, &e, 10); | |
549 | ||
8333c77e | 550 | if (errno > 0) |
9a98c7a1 LP |
551 | return -errno; |
552 | ||
553 | if (l < 0) | |
554 | return -ERANGE; | |
555 | ||
556 | if (e == p) | |
557 | return -EINVAL; | |
558 | ||
559 | e += strspn(e, WHITESPACE); | |
560 | ||
561 | for (i = 0; i < ELEMENTSOF(table); i++) | |
562 | if (startswith(e, table[i].suffix)) { | |
563 | r += (usec_t) l * table[i].usec; | |
564 | p = e + strlen(table[i].suffix); | |
565 | break; | |
566 | } | |
567 | ||
568 | if (i >= ELEMENTSOF(table)) | |
569 | return -EINVAL; | |
570 | ||
571 | } while (*p != 0); | |
572 | ||
573 | *usec = r; | |
574 | ||
575 | return 0; | |
576 | } | |
577 | ||
578 | int parse_nsec(const char *t, nsec_t *nsec) { | |
579 | static const struct { | |
580 | const char *suffix; | |
581 | nsec_t nsec; | |
582 | } table[] = { | |
583 | { "seconds", NSEC_PER_SEC }, | |
584 | { "second", NSEC_PER_SEC }, | |
585 | { "sec", NSEC_PER_SEC }, | |
586 | { "s", NSEC_PER_SEC }, | |
587 | { "minutes", NSEC_PER_MINUTE }, | |
588 | { "minute", NSEC_PER_MINUTE }, | |
589 | { "min", NSEC_PER_MINUTE }, | |
590 | { "months", NSEC_PER_MONTH }, | |
591 | { "month", NSEC_PER_MONTH }, | |
592 | { "msec", NSEC_PER_MSEC }, | |
593 | { "ms", NSEC_PER_MSEC }, | |
594 | { "m", NSEC_PER_MINUTE }, | |
595 | { "hours", NSEC_PER_HOUR }, | |
596 | { "hour", NSEC_PER_HOUR }, | |
597 | { "hr", NSEC_PER_HOUR }, | |
598 | { "h", NSEC_PER_HOUR }, | |
599 | { "days", NSEC_PER_DAY }, | |
600 | { "day", NSEC_PER_DAY }, | |
601 | { "d", NSEC_PER_DAY }, | |
602 | { "weeks", NSEC_PER_WEEK }, | |
603 | { "week", NSEC_PER_WEEK }, | |
604 | { "w", NSEC_PER_WEEK }, | |
605 | { "years", NSEC_PER_YEAR }, | |
606 | { "year", NSEC_PER_YEAR }, | |
607 | { "y", NSEC_PER_YEAR }, | |
608 | { "usec", NSEC_PER_USEC }, | |
609 | { "us", NSEC_PER_USEC }, | |
610 | { "nsec", 1ULL }, | |
611 | { "ns", 1ULL }, | |
612 | { "", 1ULL }, /* default is nsec */ | |
613 | }; | |
614 | ||
615 | const char *p; | |
616 | nsec_t r = 0; | |
617 | ||
618 | assert(t); | |
619 | assert(nsec); | |
620 | ||
621 | p = t; | |
622 | do { | |
623 | long long l; | |
624 | char *e; | |
625 | unsigned i; | |
626 | ||
627 | errno = 0; | |
628 | l = strtoll(p, &e, 10); | |
629 | ||
8333c77e | 630 | if (errno > 0) |
9a98c7a1 LP |
631 | return -errno; |
632 | ||
633 | if (l < 0) | |
634 | return -ERANGE; | |
635 | ||
636 | if (e == p) | |
637 | return -EINVAL; | |
638 | ||
639 | e += strspn(e, WHITESPACE); | |
640 | ||
641 | for (i = 0; i < ELEMENTSOF(table); i++) | |
642 | if (startswith(e, table[i].suffix)) { | |
643 | r += (nsec_t) l * table[i].nsec; | |
644 | p = e + strlen(table[i].suffix); | |
645 | break; | |
646 | } | |
647 | ||
648 | if (i >= ELEMENTSOF(table)) | |
649 | return -EINVAL; | |
650 | ||
651 | } while (*p != 0); | |
652 | ||
653 | *nsec = r; | |
654 | ||
655 | return 0; | |
656 | } |