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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
9a98c7a1 LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2010 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
20 | ||
11c3a366 TA |
21 | #include <errno.h> |
22 | #include <limits.h> | |
23 | #include <stdlib.h> | |
9a98c7a1 | 24 | #include <string.h> |
48d26c01 | 25 | #include <sys/mman.h> |
11c3a366 TA |
26 | #include <sys/stat.h> |
27 | #include <sys/time.h> | |
77ff2de9 | 28 | #include <sys/timerfd.h> |
07630cea | 29 | #include <sys/timex.h> |
11c3a366 TA |
30 | #include <sys/types.h> |
31 | #include <unistd.h> | |
9a98c7a1 | 32 | |
b5efdb8a | 33 | #include "alloc-util.h" |
3ffd4af2 | 34 | #include "fd-util.h" |
0d39fa9c | 35 | #include "fileio.h" |
f4f15635 | 36 | #include "fs-util.h" |
11c3a366 TA |
37 | #include "log.h" |
38 | #include "macro.h" | |
93cc7779 TA |
39 | #include "parse-util.h" |
40 | #include "path-util.h" | |
07630cea | 41 | #include "string-util.h" |
75683450 | 42 | #include "strv.h" |
07630cea | 43 | #include "time-util.h" |
9a98c7a1 | 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 | ||
fe624c4c LP |
90 | triple_timestamp* triple_timestamp_get(triple_timestamp *ts) { |
91 | assert(ts); | |
92 | ||
93 | ts->realtime = now(CLOCK_REALTIME); | |
94 | ts->monotonic = now(CLOCK_MONOTONIC); | |
95 | ts->boottime = clock_boottime_supported() ? now(CLOCK_BOOTTIME) : USEC_INFINITY; | |
96 | ||
97 | return ts; | |
98 | } | |
99 | ||
9a98c7a1 LP |
100 | dual_timestamp* dual_timestamp_from_realtime(dual_timestamp *ts, usec_t u) { |
101 | int64_t delta; | |
102 | assert(ts); | |
103 | ||
75a5f1d8 LP |
104 | if (u == USEC_INFINITY || u <= 0) { |
105 | ts->realtime = ts->monotonic = u; | |
cae0c5e0 LP |
106 | return ts; |
107 | } | |
108 | ||
9a98c7a1 LP |
109 | ts->realtime = u; |
110 | ||
75a5f1d8 | 111 | delta = (int64_t) now(CLOCK_REALTIME) - (int64_t) u; |
54d8ef14 | 112 | ts->monotonic = usec_sub_signed(now(CLOCK_MONOTONIC), delta); |
9a98c7a1 LP |
113 | |
114 | return ts; | |
115 | } | |
116 | ||
fe624c4c LP |
117 | triple_timestamp* triple_timestamp_from_realtime(triple_timestamp *ts, usec_t u) { |
118 | int64_t delta; | |
119 | ||
120 | assert(ts); | |
121 | ||
122 | if (u == USEC_INFINITY || u <= 0) { | |
123 | ts->realtime = ts->monotonic = ts->boottime = u; | |
124 | return ts; | |
125 | } | |
126 | ||
127 | ts->realtime = u; | |
128 | delta = (int64_t) now(CLOCK_REALTIME) - (int64_t) u; | |
54d8ef14 LP |
129 | ts->monotonic = usec_sub_signed(now(CLOCK_MONOTONIC), delta); |
130 | ts->boottime = clock_boottime_supported() ? usec_sub_signed(now(CLOCK_BOOTTIME), delta) : USEC_INFINITY; | |
fe624c4c LP |
131 | |
132 | return ts; | |
133 | } | |
134 | ||
cae0c5e0 LP |
135 | dual_timestamp* dual_timestamp_from_monotonic(dual_timestamp *ts, usec_t u) { |
136 | int64_t delta; | |
137 | assert(ts); | |
138 | ||
3a43da28 KS |
139 | if (u == USEC_INFINITY) { |
140 | ts->realtime = ts->monotonic = USEC_INFINITY; | |
cae0c5e0 LP |
141 | return ts; |
142 | } | |
143 | ||
144 | ts->monotonic = u; | |
145 | delta = (int64_t) now(CLOCK_MONOTONIC) - (int64_t) u; | |
54d8ef14 | 146 | ts->realtime = usec_sub_signed(now(CLOCK_REALTIME), delta); |
cae0c5e0 LP |
147 | |
148 | return ts; | |
149 | } | |
150 | ||
fbe55073 LP |
151 | dual_timestamp* dual_timestamp_from_boottime_or_monotonic(dual_timestamp *ts, usec_t u) { |
152 | int64_t delta; | |
153 | ||
154 | if (u == USEC_INFINITY) { | |
155 | ts->realtime = ts->monotonic = USEC_INFINITY; | |
156 | return ts; | |
157 | } | |
fbe55073 | 158 | |
0345d252 | 159 | dual_timestamp_get(ts); |
fbe55073 | 160 | delta = (int64_t) now(clock_boottime_or_monotonic()) - (int64_t) u; |
54d8ef14 LP |
161 | ts->realtime = usec_sub_signed(ts->realtime, delta); |
162 | ts->monotonic = usec_sub_signed(ts->monotonic, delta); | |
fbe55073 LP |
163 | |
164 | return ts; | |
165 | } | |
166 | ||
fe624c4c LP |
167 | usec_t triple_timestamp_by_clock(triple_timestamp *ts, clockid_t clock) { |
168 | ||
169 | switch (clock) { | |
170 | ||
171 | case CLOCK_REALTIME: | |
172 | case CLOCK_REALTIME_ALARM: | |
173 | return ts->realtime; | |
174 | ||
175 | case CLOCK_MONOTONIC: | |
176 | return ts->monotonic; | |
177 | ||
178 | case CLOCK_BOOTTIME: | |
179 | case CLOCK_BOOTTIME_ALARM: | |
180 | return ts->boottime; | |
181 | ||
182 | default: | |
183 | return USEC_INFINITY; | |
184 | } | |
185 | } | |
186 | ||
9a98c7a1 LP |
187 | usec_t timespec_load(const struct timespec *ts) { |
188 | assert(ts); | |
189 | ||
c477ff14 | 190 | if (ts->tv_sec < 0 || ts->tv_nsec < 0) |
3a43da28 | 191 | return USEC_INFINITY; |
9a98c7a1 LP |
192 | |
193 | if ((usec_t) ts->tv_sec > (UINT64_MAX - (ts->tv_nsec / NSEC_PER_USEC)) / USEC_PER_SEC) | |
3a43da28 | 194 | return USEC_INFINITY; |
9a98c7a1 LP |
195 | |
196 | return | |
197 | (usec_t) ts->tv_sec * USEC_PER_SEC + | |
198 | (usec_t) ts->tv_nsec / NSEC_PER_USEC; | |
199 | } | |
200 | ||
3a730176 | 201 | nsec_t timespec_load_nsec(const struct timespec *ts) { |
45d7a8bb LP |
202 | assert(ts); |
203 | ||
c477ff14 | 204 | if (ts->tv_sec < 0 || ts->tv_nsec < 0) |
45d7a8bb LP |
205 | return NSEC_INFINITY; |
206 | ||
a2daa2f0 ZJS |
207 | if ((nsec_t) ts->tv_sec >= (UINT64_MAX - ts->tv_nsec) / NSEC_PER_SEC) |
208 | return NSEC_INFINITY; | |
209 | ||
210 | return (nsec_t) ts->tv_sec * NSEC_PER_SEC + (nsec_t) ts->tv_nsec; | |
45d7a8bb LP |
211 | } |
212 | ||
9a98c7a1 LP |
213 | struct timespec *timespec_store(struct timespec *ts, usec_t u) { |
214 | assert(ts); | |
215 | ||
f977849c | 216 | if (u == USEC_INFINITY || |
d201d908 | 217 | u / USEC_PER_SEC >= TIME_T_MAX) { |
9a98c7a1 LP |
218 | ts->tv_sec = (time_t) -1; |
219 | ts->tv_nsec = (long) -1; | |
220 | return ts; | |
221 | } | |
222 | ||
223 | ts->tv_sec = (time_t) (u / USEC_PER_SEC); | |
224 | ts->tv_nsec = (long int) ((u % USEC_PER_SEC) * NSEC_PER_USEC); | |
225 | ||
226 | return ts; | |
227 | } | |
228 | ||
229 | usec_t timeval_load(const struct timeval *tv) { | |
230 | assert(tv); | |
231 | ||
c477ff14 | 232 | if (tv->tv_sec < 0 || tv->tv_usec < 0) |
3a43da28 | 233 | return USEC_INFINITY; |
9a98c7a1 LP |
234 | |
235 | if ((usec_t) tv->tv_sec > (UINT64_MAX - tv->tv_usec) / USEC_PER_SEC) | |
3a43da28 | 236 | return USEC_INFINITY; |
9a98c7a1 LP |
237 | |
238 | return | |
239 | (usec_t) tv->tv_sec * USEC_PER_SEC + | |
240 | (usec_t) tv->tv_usec; | |
241 | } | |
242 | ||
243 | struct timeval *timeval_store(struct timeval *tv, usec_t u) { | |
244 | assert(tv); | |
245 | ||
68bdd2d2 | 246 | if (u == USEC_INFINITY || |
f977849c | 247 | u / USEC_PER_SEC > TIME_T_MAX) { |
9a98c7a1 LP |
248 | tv->tv_sec = (time_t) -1; |
249 | tv->tv_usec = (suseconds_t) -1; | |
4d89874a ZJS |
250 | } else { |
251 | tv->tv_sec = (time_t) (u / USEC_PER_SEC); | |
252 | tv->tv_usec = (suseconds_t) (u % USEC_PER_SEC); | |
9a98c7a1 LP |
253 | } |
254 | ||
9a98c7a1 LP |
255 | return tv; |
256 | } | |
257 | ||
21b3a0fc LP |
258 | static char *format_timestamp_internal( |
259 | char *buf, | |
260 | size_t l, | |
261 | usec_t t, | |
262 | bool utc, | |
263 | bool us) { | |
264 | ||
265 | /* The weekdays in non-localized (English) form. We use this instead of the localized form, so that our | |
266 | * generated timestamps may be parsed with parse_timestamp(), and always read the same. */ | |
267 | static const char * const weekdays[] = { | |
268 | [0] = "Sun", | |
269 | [1] = "Mon", | |
270 | [2] = "Tue", | |
271 | [3] = "Wed", | |
272 | [4] = "Thu", | |
273 | [5] = "Fri", | |
274 | [6] = "Sat", | |
275 | }; | |
276 | ||
9a98c7a1 LP |
277 | struct tm tm; |
278 | time_t sec; | |
21b3a0fc | 279 | size_t n; |
9a98c7a1 LP |
280 | |
281 | assert(buf); | |
9a98c7a1 | 282 | |
21b3a0fc LP |
283 | if (l < |
284 | 3 + /* week day */ | |
285 | 1 + 10 + /* space and date */ | |
286 | 1 + 8 + /* space and time */ | |
287 | (us ? 1 + 6 : 0) + /* "." and microsecond part */ | |
288 | 1 + 1 + /* space and shortest possible zone */ | |
289 | 1) | |
290 | return NULL; /* Not enough space even for the shortest form. */ | |
3a43da28 | 291 | if (t <= 0 || t == USEC_INFINITY) |
21b3a0fc LP |
292 | return NULL; /* Timestamp is unset */ |
293 | ||
1bb4b028 LP |
294 | /* Let's not format times with years > 9999 */ |
295 | if (t > USEC_TIMESTAMP_FORMATTABLE_MAX) | |
296 | return NULL; | |
297 | ||
21b3a0fc | 298 | sec = (time_t) (t / USEC_PER_SEC); /* Round down */ |
21b3a0fc LP |
299 | |
300 | if (!localtime_or_gmtime_r(&sec, &tm, utc)) | |
9a98c7a1 LP |
301 | return NULL; |
302 | ||
21b3a0fc LP |
303 | /* Start with the week day */ |
304 | assert((size_t) tm.tm_wday < ELEMENTSOF(weekdays)); | |
305 | memcpy(buf, weekdays[tm.tm_wday], 4); | |
9a98c7a1 | 306 | |
21b3a0fc LP |
307 | /* Add the main components */ |
308 | if (strftime(buf + 3, l - 3, " %Y-%m-%d %H:%M:%S", &tm) <= 0) | |
309 | return NULL; /* Doesn't fit */ | |
0056086a | 310 | |
21b3a0fc | 311 | /* Append the microseconds part, if that's requested */ |
0056086a | 312 | if (us) { |
21b3a0fc LP |
313 | n = strlen(buf); |
314 | if (n + 8 > l) | |
315 | return NULL; /* Microseconds part doesn't fit. */ | |
316 | ||
70887c5f | 317 | sprintf(buf + n, ".%06"PRI_USEC, t % USEC_PER_SEC); |
21b3a0fc LP |
318 | } |
319 | ||
320 | /* Append the timezone */ | |
321 | n = strlen(buf); | |
322 | if (utc) { | |
323 | /* If this is UTC then let's explicitly use the "UTC" string here, because gmtime_r() normally uses the | |
324 | * obsolete "GMT" instead. */ | |
325 | if (n + 5 > l) | |
326 | return NULL; /* "UTC" doesn't fit. */ | |
327 | ||
328 | strcpy(buf + n, " UTC"); | |
329 | ||
330 | } else if (!isempty(tm.tm_zone)) { | |
331 | size_t tn; | |
332 | ||
333 | /* An explicit timezone is specified, let's use it, if it fits */ | |
334 | tn = strlen(tm.tm_zone); | |
335 | if (n + 1 + tn + 1 > l) { | |
336 | /* The full time zone does not fit in. Yuck. */ | |
337 | ||
338 | if (n + 1 + _POSIX_TZNAME_MAX + 1 > l) | |
339 | return NULL; /* Not even enough space for the POSIX minimum (of 6)? In that case, complain that it doesn't fit */ | |
340 | ||
341 | /* So the time zone doesn't fit in fully, but the caller passed enough space for the POSIX | |
342 | * minimum time zone length. In this case suppress the timezone entirely, in order not to dump | |
343 | * an overly long, hard to read string on the user. This should be safe, because the user will | |
344 | * assume the local timezone anyway if none is shown. And so does parse_timestamp(). */ | |
345 | } else { | |
346 | buf[n++] = ' '; | |
347 | strcpy(buf + n, tm.tm_zone); | |
348 | } | |
0056086a | 349 | } |
9a98c7a1 LP |
350 | |
351 | return buf; | |
352 | } | |
353 | ||
a62e83b4 | 354 | char *format_timestamp(char *buf, size_t l, usec_t t) { |
0056086a | 355 | return format_timestamp_internal(buf, l, t, false, false); |
a62e83b4 JS |
356 | } |
357 | ||
5ab99e07 | 358 | char *format_timestamp_utc(char *buf, size_t l, usec_t t) { |
0056086a | 359 | return format_timestamp_internal(buf, l, t, true, false); |
f02d8367 ZJS |
360 | } |
361 | ||
5ab99e07 | 362 | char *format_timestamp_us(char *buf, size_t l, usec_t t) { |
0056086a | 363 | return format_timestamp_internal(buf, l, t, false, true); |
5ab99e07 LP |
364 | } |
365 | ||
366 | char *format_timestamp_us_utc(char *buf, size_t l, usec_t t) { | |
0056086a | 367 | return format_timestamp_internal(buf, l, t, true, true); |
5ab99e07 LP |
368 | } |
369 | ||
bbb8486e | 370 | char *format_timestamp_relative(char *buf, size_t l, usec_t t) { |
1fcf71f5 | 371 | const char *s; |
9a98c7a1 LP |
372 | usec_t n, d; |
373 | ||
65de0395 | 374 | if (t <= 0 || t == USEC_INFINITY) |
9a98c7a1 LP |
375 | return NULL; |
376 | ||
65de0395 | 377 | n = now(CLOCK_REALTIME); |
1fcf71f5 LP |
378 | if (n > t) { |
379 | d = n - t; | |
380 | s = "ago"; | |
381 | } else { | |
382 | d = t - n; | |
383 | s = "left"; | |
384 | } | |
9a98c7a1 LP |
385 | |
386 | if (d >= USEC_PER_YEAR) | |
609e002e | 387 | snprintf(buf, l, USEC_FMT " years " USEC_FMT " months %s", |
de0671ee ZJS |
388 | d / USEC_PER_YEAR, |
389 | (d % USEC_PER_YEAR) / USEC_PER_MONTH, s); | |
9a98c7a1 | 390 | else if (d >= USEC_PER_MONTH) |
609e002e | 391 | snprintf(buf, l, USEC_FMT " months " USEC_FMT " days %s", |
de0671ee ZJS |
392 | d / USEC_PER_MONTH, |
393 | (d % USEC_PER_MONTH) / USEC_PER_DAY, s); | |
9a98c7a1 | 394 | else if (d >= USEC_PER_WEEK) |
609e002e | 395 | snprintf(buf, l, USEC_FMT " weeks " USEC_FMT " days %s", |
de0671ee ZJS |
396 | d / USEC_PER_WEEK, |
397 | (d % USEC_PER_WEEK) / USEC_PER_DAY, s); | |
9a98c7a1 | 398 | else if (d >= 2*USEC_PER_DAY) |
609e002e | 399 | snprintf(buf, l, USEC_FMT " days %s", d / USEC_PER_DAY, s); |
9a98c7a1 | 400 | else if (d >= 25*USEC_PER_HOUR) |
609e002e | 401 | snprintf(buf, l, "1 day " USEC_FMT "h %s", |
de0671ee | 402 | (d - USEC_PER_DAY) / USEC_PER_HOUR, s); |
9a98c7a1 | 403 | else if (d >= 6*USEC_PER_HOUR) |
609e002e | 404 | snprintf(buf, l, USEC_FMT "h %s", |
de0671ee | 405 | d / USEC_PER_HOUR, s); |
9a98c7a1 | 406 | else if (d >= USEC_PER_HOUR) |
609e002e | 407 | snprintf(buf, l, USEC_FMT "h " USEC_FMT "min %s", |
de0671ee ZJS |
408 | d / USEC_PER_HOUR, |
409 | (d % USEC_PER_HOUR) / USEC_PER_MINUTE, s); | |
9a98c7a1 | 410 | else if (d >= 5*USEC_PER_MINUTE) |
609e002e | 411 | snprintf(buf, l, USEC_FMT "min %s", |
de0671ee | 412 | d / USEC_PER_MINUTE, s); |
9a98c7a1 | 413 | else if (d >= USEC_PER_MINUTE) |
609e002e | 414 | snprintf(buf, l, USEC_FMT "min " USEC_FMT "s %s", |
de0671ee ZJS |
415 | d / USEC_PER_MINUTE, |
416 | (d % USEC_PER_MINUTE) / USEC_PER_SEC, s); | |
9a98c7a1 | 417 | else if (d >= USEC_PER_SEC) |
609e002e | 418 | snprintf(buf, l, USEC_FMT "s %s", |
de0671ee | 419 | d / USEC_PER_SEC, s); |
9a98c7a1 | 420 | else if (d >= USEC_PER_MSEC) |
609e002e | 421 | snprintf(buf, l, USEC_FMT "ms %s", |
de0671ee | 422 | d / USEC_PER_MSEC, s); |
9a98c7a1 | 423 | else if (d > 0) |
de0671ee ZJS |
424 | snprintf(buf, l, USEC_FMT"us %s", |
425 | d, s); | |
9a98c7a1 LP |
426 | else |
427 | snprintf(buf, l, "now"); | |
428 | ||
429 | buf[l-1] = 0; | |
430 | return buf; | |
431 | } | |
432 | ||
2fa4092c | 433 | char *format_timespan(char *buf, size_t l, usec_t t, usec_t accuracy) { |
9a98c7a1 LP |
434 | static const struct { |
435 | const char *suffix; | |
436 | usec_t usec; | |
437 | } table[] = { | |
eb55ec9f LP |
438 | { "y", USEC_PER_YEAR }, |
439 | { "month", USEC_PER_MONTH }, | |
440 | { "w", USEC_PER_WEEK }, | |
441 | { "d", USEC_PER_DAY }, | |
442 | { "h", USEC_PER_HOUR }, | |
443 | { "min", USEC_PER_MINUTE }, | |
444 | { "s", USEC_PER_SEC }, | |
445 | { "ms", USEC_PER_MSEC }, | |
446 | { "us", 1 }, | |
9a98c7a1 LP |
447 | }; |
448 | ||
449 | unsigned i; | |
450 | char *p = buf; | |
2fa4092c | 451 | bool something = false; |
9a98c7a1 LP |
452 | |
453 | assert(buf); | |
454 | assert(l > 0); | |
455 | ||
bb1fada8 LP |
456 | if (t == USEC_INFINITY) { |
457 | strncpy(p, "infinity", l-1); | |
458 | p[l-1] = 0; | |
459 | return p; | |
460 | } | |
461 | ||
462 | if (t <= 0) { | |
463 | strncpy(p, "0", l-1); | |
7c537b2e LP |
464 | p[l-1] = 0; |
465 | return p; | |
466 | } | |
467 | ||
7f602784 | 468 | /* The result of this function can be parsed with parse_sec */ |
9a98c7a1 LP |
469 | |
470 | for (i = 0; i < ELEMENTSOF(table); i++) { | |
7759ecb2 | 471 | int k = 0; |
9a98c7a1 | 472 | size_t n; |
2fa4092c LP |
473 | bool done = false; |
474 | usec_t a, b; | |
475 | ||
7c537b2e LP |
476 | if (t <= 0) |
477 | break; | |
2fa4092c | 478 | |
7c537b2e | 479 | if (t < accuracy && something) |
2fa4092c | 480 | break; |
9a98c7a1 LP |
481 | |
482 | if (t < table[i].usec) | |
483 | continue; | |
484 | ||
485 | if (l <= 1) | |
486 | break; | |
487 | ||
2fa4092c LP |
488 | a = t / table[i].usec; |
489 | b = t % table[i].usec; | |
490 | ||
491 | /* Let's see if we should shows this in dot notation */ | |
492 | if (t < USEC_PER_MINUTE && b > 0) { | |
493 | usec_t cc; | |
494 | int j; | |
495 | ||
496 | j = 0; | |
497 | for (cc = table[i].usec; cc > 1; cc /= 10) | |
498 | j++; | |
499 | ||
500 | for (cc = accuracy; cc > 1; cc /= 10) { | |
501 | b /= 10; | |
502 | j--; | |
503 | } | |
504 | ||
505 | if (j > 0) { | |
506 | k = snprintf(p, l, | |
70887c5f | 507 | "%s"USEC_FMT".%0*"PRI_USEC"%s", |
2fa4092c | 508 | p > buf ? " " : "", |
de0671ee | 509 | a, |
2fa4092c | 510 | j, |
70887c5f | 511 | b, |
2fa4092c LP |
512 | table[i].suffix); |
513 | ||
514 | t = 0; | |
515 | done = true; | |
516 | } | |
517 | } | |
518 | ||
519 | /* No? Then let's show it normally */ | |
520 | if (!done) { | |
521 | k = snprintf(p, l, | |
de0671ee | 522 | "%s"USEC_FMT"%s", |
2fa4092c | 523 | p > buf ? " " : "", |
de0671ee | 524 | a, |
2fa4092c LP |
525 | table[i].suffix); |
526 | ||
527 | t = b; | |
528 | } | |
529 | ||
9a98c7a1 LP |
530 | n = MIN((size_t) k, l); |
531 | ||
532 | l -= n; | |
533 | p += n; | |
534 | ||
2fa4092c | 535 | something = true; |
9a98c7a1 LP |
536 | } |
537 | ||
538 | *p = 0; | |
539 | ||
540 | return buf; | |
541 | } | |
542 | ||
543 | void dual_timestamp_serialize(FILE *f, const char *name, dual_timestamp *t) { | |
544 | ||
545 | assert(f); | |
546 | assert(name); | |
547 | assert(t); | |
548 | ||
549 | if (!dual_timestamp_is_set(t)) | |
550 | return; | |
551 | ||
de0671ee | 552 | fprintf(f, "%s="USEC_FMT" "USEC_FMT"\n", |
9a98c7a1 | 553 | name, |
de0671ee ZJS |
554 | t->realtime, |
555 | t->monotonic); | |
9a98c7a1 LP |
556 | } |
557 | ||
e911de99 | 558 | int dual_timestamp_deserialize(const char *value, dual_timestamp *t) { |
74c5b33b | 559 | uint64_t a, b; |
9c0565b2 | 560 | int r, pos; |
9a98c7a1 LP |
561 | |
562 | assert(value); | |
563 | assert(t); | |
564 | ||
9c0565b2 ZJS |
565 | pos = strspn(value, WHITESPACE); |
566 | if (value[pos] == '-') | |
567 | return -EINVAL; | |
568 | pos += strspn(value + pos, DIGITS); | |
569 | pos += strspn(value + pos, WHITESPACE); | |
570 | if (value[pos] == '-') | |
571 | return -EINVAL; | |
572 | ||
573 | r = sscanf(value, "%" PRIu64 "%" PRIu64 "%n", &a, &b, &pos); | |
574 | if (r != 2) { | |
575 | log_debug("Failed to parse dual timestamp value \"%s\".", value); | |
e911de99 | 576 | return -EINVAL; |
9a98c7a1 | 577 | } |
e911de99 | 578 | |
9c0565b2 ZJS |
579 | if (value[pos] != '\0') |
580 | /* trailing garbage */ | |
581 | return -EINVAL; | |
582 | ||
e911de99 LP |
583 | t->realtime = a; |
584 | t->monotonic = b; | |
585 | ||
586 | return 0; | |
9a98c7a1 LP |
587 | } |
588 | ||
b895a735 | 589 | int timestamp_deserialize(const char *value, usec_t *timestamp) { |
ebf30a08 AK |
590 | int r; |
591 | ||
592 | assert(value); | |
593 | ||
594 | r = safe_atou64(value, timestamp); | |
ebf30a08 | 595 | if (r < 0) |
b895a735 | 596 | return log_debug_errno(r, "Failed to parse timestamp value \"%s\": %m", value); |
ebf30a08 AK |
597 | |
598 | return r; | |
599 | } | |
600 | ||
48d26c01 | 601 | static int parse_timestamp_impl(const char *t, usec_t *usec, bool with_tz) { |
92134489 LP |
602 | static const struct { |
603 | const char *name; | |
604 | const int nr; | |
605 | } day_nr[] = { | |
606 | { "Sunday", 0 }, | |
607 | { "Sun", 0 }, | |
608 | { "Monday", 1 }, | |
609 | { "Mon", 1 }, | |
610 | { "Tuesday", 2 }, | |
611 | { "Tue", 2 }, | |
612 | { "Wednesday", 3 }, | |
613 | { "Wed", 3 }, | |
614 | { "Thursday", 4 }, | |
615 | { "Thu", 4 }, | |
616 | { "Friday", 5 }, | |
617 | { "Fri", 5 }, | |
618 | { "Saturday", 6 }, | |
619 | { "Sat", 6 }, | |
620 | }; | |
621 | ||
48d26c01 | 622 | const char *k, *utc = NULL, *tzn = NULL; |
9a98c7a1 LP |
623 | struct tm tm, copy; |
624 | time_t x; | |
e4eaf99a | 625 | usec_t x_usec, plus = 0, minus = 0, ret; |
21b3a0fc | 626 | int r, weekday = -1, dst = -1; |
92134489 | 627 | unsigned i; |
9a98c7a1 LP |
628 | |
629 | /* | |
630 | * Allowed syntaxes: | |
631 | * | |
632 | * 2012-09-22 16:34:22 | |
633 | * 2012-09-22 16:34 (seconds will be set to 0) | |
634 | * 2012-09-22 (time will be set to 00:00:00) | |
635 | * 16:34:22 (date will be set to today) | |
636 | * 16:34 (date will be set to today, seconds to 0) | |
637 | * now | |
638 | * yesterday (time is set to 00:00:00) | |
639 | * today (time is set to 00:00:00) | |
640 | * tomorrow (time is set to 00:00:00) | |
641 | * +5min | |
642 | * -5days | |
5ba6e094 | 643 | * @2147483647 (seconds since epoch) |
9a98c7a1 LP |
644 | * |
645 | */ | |
646 | ||
647 | assert(t); | |
648 | assert(usec); | |
649 | ||
48d26c01 | 650 | if (t[0] == '@' && !with_tz) |
e4eaf99a | 651 | return parse_sec(t + 1, usec); |
9a98c7a1 | 652 | |
e4eaf99a | 653 | ret = now(CLOCK_REALTIME); |
9a98c7a1 | 654 | |
48d26c01 IK |
655 | if (!with_tz) { |
656 | if (streq(t, "now")) | |
657 | goto finish; | |
9a98c7a1 | 658 | |
48d26c01 IK |
659 | else if (t[0] == '+') { |
660 | r = parse_sec(t+1, &plus); | |
661 | if (r < 0) | |
662 | return r; | |
9a98c7a1 | 663 | |
48d26c01 | 664 | goto finish; |
9a98c7a1 | 665 | |
48d26c01 IK |
666 | } else if (t[0] == '-') { |
667 | r = parse_sec(t+1, &minus); | |
668 | if (r < 0) | |
669 | return r; | |
9a98c7a1 | 670 | |
48d26c01 | 671 | goto finish; |
decad910 | 672 | |
48d26c01 IK |
673 | } else if ((k = endswith(t, " ago"))) { |
674 | t = strndupa(t, k - t); | |
decad910 | 675 | |
48d26c01 IK |
676 | r = parse_sec(t, &minus); |
677 | if (r < 0) | |
678 | return r; | |
decad910 | 679 | |
48d26c01 | 680 | goto finish; |
1fcf71f5 | 681 | |
48d26c01 IK |
682 | } else if ((k = endswith(t, " left"))) { |
683 | t = strndupa(t, k - t); | |
1fcf71f5 | 684 | |
48d26c01 IK |
685 | r = parse_sec(t, &plus); |
686 | if (r < 0) | |
687 | return r; | |
1fcf71f5 | 688 | |
48d26c01 IK |
689 | goto finish; |
690 | } | |
9a98c7a1 | 691 | |
48d26c01 IK |
692 | /* See if the timestamp is suffixed with UTC */ |
693 | utc = endswith_no_case(t, " UTC"); | |
694 | if (utc) | |
695 | t = strndupa(t, utc - t); | |
696 | else { | |
697 | const char *e = NULL; | |
698 | int j; | |
21b3a0fc | 699 | |
48d26c01 | 700 | tzset(); |
21b3a0fc | 701 | |
48d26c01 IK |
702 | /* See if the timestamp is suffixed by either the DST or non-DST local timezone. Note that we only |
703 | * support the local timezones here, nothing else. Not because we wouldn't want to, but simply because | |
704 | * there are no nice APIs available to cover this. By accepting the local time zone strings, we make | |
705 | * sure that all timestamps written by format_timestamp() can be parsed correctly, even though we don't | |
706 | * support arbitrary timezone specifications. */ | |
e4eaf99a | 707 | |
48d26c01 | 708 | for (j = 0; j <= 1; j++) { |
21b3a0fc | 709 | |
48d26c01 IK |
710 | if (isempty(tzname[j])) |
711 | continue; | |
21b3a0fc | 712 | |
48d26c01 IK |
713 | e = endswith_no_case(t, tzname[j]); |
714 | if (!e) | |
715 | continue; | |
716 | if (e == t) | |
717 | continue; | |
718 | if (e[-1] != ' ') | |
719 | continue; | |
21b3a0fc | 720 | |
48d26c01 IK |
721 | break; |
722 | } | |
21b3a0fc | 723 | |
48d26c01 IK |
724 | if (IN_SET(j, 0, 1)) { |
725 | /* Found one of the two timezones specified. */ | |
726 | t = strndupa(t, e - t - 1); | |
727 | dst = j; | |
728 | tzn = tzname[j]; | |
729 | } | |
21b3a0fc LP |
730 | } |
731 | } | |
732 | ||
733 | x = (time_t) (ret / USEC_PER_SEC); | |
e4eaf99a HV |
734 | x_usec = 0; |
735 | ||
21b3a0fc LP |
736 | if (!localtime_or_gmtime_r(&x, &tm, utc)) |
737 | return -EINVAL; | |
738 | ||
2e72b794 IK |
739 | tm.tm_isdst = dst; |
740 | if (!with_tz && tzn) | |
741 | tm.tm_zone = tzn; | |
e4eaf99a HV |
742 | |
743 | if (streq(t, "today")) { | |
744 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
745 | goto from_tm; | |
746 | ||
747 | } else if (streq(t, "yesterday")) { | |
313cefa1 | 748 | tm.tm_mday--; |
e4eaf99a HV |
749 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; |
750 | goto from_tm; | |
751 | ||
752 | } else if (streq(t, "tomorrow")) { | |
313cefa1 | 753 | tm.tm_mday++; |
e4eaf99a HV |
754 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; |
755 | goto from_tm; | |
756 | } | |
757 | ||
92134489 LP |
758 | for (i = 0; i < ELEMENTSOF(day_nr); i++) { |
759 | size_t skip; | |
760 | ||
761 | if (!startswith_no_case(t, day_nr[i].name)) | |
762 | continue; | |
763 | ||
764 | skip = strlen(day_nr[i].name); | |
765 | if (t[skip] != ' ') | |
766 | continue; | |
767 | ||
768 | weekday = day_nr[i].nr; | |
769 | t += skip + 1; | |
770 | break; | |
771 | } | |
772 | ||
9a98c7a1 LP |
773 | copy = tm; |
774 | k = strptime(t, "%y-%m-%d %H:%M:%S", &tm); | |
e4eaf99a HV |
775 | if (k) { |
776 | if (*k == '.') | |
777 | goto parse_usec; | |
778 | else if (*k == 0) | |
779 | goto from_tm; | |
780 | } | |
9a98c7a1 LP |
781 | |
782 | tm = copy; | |
783 | k = strptime(t, "%Y-%m-%d %H:%M:%S", &tm); | |
e4eaf99a HV |
784 | if (k) { |
785 | if (*k == '.') | |
786 | goto parse_usec; | |
787 | else if (*k == 0) | |
788 | goto from_tm; | |
789 | } | |
9a98c7a1 LP |
790 | |
791 | tm = copy; | |
792 | k = strptime(t, "%y-%m-%d %H:%M", &tm); | |
793 | if (k && *k == 0) { | |
794 | tm.tm_sec = 0; | |
e4eaf99a | 795 | goto from_tm; |
9a98c7a1 LP |
796 | } |
797 | ||
798 | tm = copy; | |
799 | k = strptime(t, "%Y-%m-%d %H:%M", &tm); | |
800 | if (k && *k == 0) { | |
801 | tm.tm_sec = 0; | |
e4eaf99a | 802 | goto from_tm; |
9a98c7a1 LP |
803 | } |
804 | ||
805 | tm = copy; | |
806 | k = strptime(t, "%y-%m-%d", &tm); | |
807 | if (k && *k == 0) { | |
808 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
e4eaf99a | 809 | goto from_tm; |
9a98c7a1 LP |
810 | } |
811 | ||
812 | tm = copy; | |
813 | k = strptime(t, "%Y-%m-%d", &tm); | |
814 | if (k && *k == 0) { | |
815 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
e4eaf99a | 816 | goto from_tm; |
9a98c7a1 LP |
817 | } |
818 | ||
819 | tm = copy; | |
820 | k = strptime(t, "%H:%M:%S", &tm); | |
e4eaf99a HV |
821 | if (k) { |
822 | if (*k == '.') | |
823 | goto parse_usec; | |
824 | else if (*k == 0) | |
825 | goto from_tm; | |
826 | } | |
9a98c7a1 LP |
827 | |
828 | tm = copy; | |
829 | k = strptime(t, "%H:%M", &tm); | |
830 | if (k && *k == 0) { | |
831 | tm.tm_sec = 0; | |
e4eaf99a | 832 | goto from_tm; |
9a98c7a1 LP |
833 | } |
834 | ||
835 | return -EINVAL; | |
836 | ||
e4eaf99a HV |
837 | parse_usec: |
838 | { | |
436dd70f | 839 | unsigned add; |
e4eaf99a HV |
840 | |
841 | k++; | |
436dd70f HV |
842 | r = parse_fractional_part_u(&k, 6, &add); |
843 | if (r < 0) | |
e4eaf99a HV |
844 | return -EINVAL; |
845 | ||
436dd70f | 846 | if (*k) |
e4eaf99a HV |
847 | return -EINVAL; |
848 | ||
436dd70f | 849 | x_usec = add; |
e4eaf99a HV |
850 | } |
851 | ||
852 | from_tm: | |
214cc95d | 853 | if (weekday >= 0 && tm.tm_wday != weekday) |
68bdd2d2 | 854 | return -EINVAL; |
9a98c7a1 | 855 | |
214cc95d MH |
856 | x = mktime_or_timegm(&tm, utc); |
857 | if (x < 0) | |
92134489 LP |
858 | return -EINVAL; |
859 | ||
68bdd2d2 | 860 | ret = (usec_t) x * USEC_PER_SEC + x_usec; |
1bb4b028 LP |
861 | if (ret > USEC_TIMESTAMP_FORMATTABLE_MAX) |
862 | return -EINVAL; | |
9a98c7a1 | 863 | |
e4eaf99a | 864 | finish: |
315782db | 865 | if (ret + plus < ret) /* overflow? */ |
68bdd2d2 | 866 | return -EINVAL; |
9a98c7a1 | 867 | ret += plus; |
1bb4b028 LP |
868 | if (ret > USEC_TIMESTAMP_FORMATTABLE_MAX) |
869 | return -EINVAL; | |
870 | ||
68bdd2d2 | 871 | if (ret >= minus) |
9a98c7a1 LP |
872 | ret -= minus; |
873 | else | |
68bdd2d2 | 874 | return -EINVAL; |
9a98c7a1 LP |
875 | |
876 | *usec = ret; | |
877 | ||
878 | return 0; | |
879 | } | |
880 | ||
48d26c01 IK |
881 | typedef struct ParseTimestampResult { |
882 | usec_t usec; | |
883 | int return_value; | |
884 | } ParseTimestampResult; | |
885 | ||
886 | int parse_timestamp(const char *t, usec_t *usec) { | |
ff69484a | 887 | char *last_space, *tz = NULL; |
48d26c01 IK |
888 | ParseTimestampResult *shared, tmp; |
889 | int r; | |
890 | pid_t pid; | |
891 | ||
892 | last_space = strrchr(t, ' '); | |
a2932a0d | 893 | if (last_space != NULL && timezone_is_valid(last_space + 1)) |
ff69484a | 894 | tz = last_space + 1; |
48d26c01 | 895 | |
ff69484a | 896 | if (tz == NULL || endswith_no_case(t, " UTC")) |
48d26c01 IK |
897 | return parse_timestamp_impl(t, usec, false); |
898 | ||
48d26c01 IK |
899 | shared = mmap(NULL, sizeof *shared, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANONYMOUS, -1, 0); |
900 | if (shared == MAP_FAILED) | |
901 | return negative_errno(); | |
902 | ||
903 | pid = fork(); | |
904 | ||
905 | if (pid == -1) { | |
906 | int fork_errno = errno; | |
907 | (void) munmap(shared, sizeof *shared); | |
908 | return -fork_errno; | |
909 | } | |
910 | ||
911 | if (pid == 0) { | |
3fd4929b MH |
912 | bool with_tz = true; |
913 | ||
ff69484a | 914 | if (setenv("TZ", tz, 1) != 0) { |
48d26c01 IK |
915 | shared->return_value = negative_errno(); |
916 | _exit(EXIT_FAILURE); | |
917 | } | |
918 | ||
919 | tzset(); | |
920 | ||
3fd4929b MH |
921 | /* If there is a timezone that matches the tzname fields, leave the parsing to the implementation. |
922 | * Otherwise just cut it off */ | |
923 | with_tz = !STR_IN_SET(tz, tzname[0], tzname[1]); | |
924 | ||
925 | /*cut off the timezone if we dont need it*/ | |
926 | if (with_tz) | |
927 | t = strndupa(t, last_space - t); | |
928 | ||
929 | shared->return_value = parse_timestamp_impl(t, &shared->usec, with_tz); | |
48d26c01 IK |
930 | |
931 | _exit(EXIT_SUCCESS); | |
932 | } | |
933 | ||
934 | r = wait_for_terminate(pid, NULL); | |
935 | if (r < 0) { | |
936 | (void) munmap(shared, sizeof *shared); | |
937 | return r; | |
938 | } | |
939 | ||
940 | tmp = *shared; | |
941 | if (munmap(shared, sizeof *shared) != 0) | |
942 | return negative_errno(); | |
943 | ||
944 | if (tmp.return_value == 0) | |
945 | *usec = tmp.usec; | |
946 | ||
947 | return tmp.return_value; | |
948 | } | |
949 | ||
240a7ba9 | 950 | static char* extract_multiplier(char *p, usec_t *multiplier) { |
9a98c7a1 LP |
951 | static const struct { |
952 | const char *suffix; | |
953 | usec_t usec; | |
954 | } table[] = { | |
eb55ec9f LP |
955 | { "seconds", USEC_PER_SEC }, |
956 | { "second", USEC_PER_SEC }, | |
957 | { "sec", USEC_PER_SEC }, | |
958 | { "s", USEC_PER_SEC }, | |
9a98c7a1 | 959 | { "minutes", USEC_PER_MINUTE }, |
eb55ec9f LP |
960 | { "minute", USEC_PER_MINUTE }, |
961 | { "min", USEC_PER_MINUTE }, | |
962 | { "months", USEC_PER_MONTH }, | |
963 | { "month", USEC_PER_MONTH }, | |
964 | { "M", USEC_PER_MONTH }, | |
965 | { "msec", USEC_PER_MSEC }, | |
966 | { "ms", USEC_PER_MSEC }, | |
967 | { "m", USEC_PER_MINUTE }, | |
968 | { "hours", USEC_PER_HOUR }, | |
969 | { "hour", USEC_PER_HOUR }, | |
970 | { "hr", USEC_PER_HOUR }, | |
971 | { "h", USEC_PER_HOUR }, | |
972 | { "days", USEC_PER_DAY }, | |
973 | { "day", USEC_PER_DAY }, | |
974 | { "d", USEC_PER_DAY }, | |
975 | { "weeks", USEC_PER_WEEK }, | |
976 | { "week", USEC_PER_WEEK }, | |
977 | { "w", USEC_PER_WEEK }, | |
978 | { "years", USEC_PER_YEAR }, | |
979 | { "year", USEC_PER_YEAR }, | |
980 | { "y", USEC_PER_YEAR }, | |
981 | { "usec", 1ULL }, | |
982 | { "us", 1ULL }, | |
5efdbf11 | 983 | { "µs", 1ULL }, |
9a98c7a1 | 984 | }; |
240a7ba9 ZJS |
985 | unsigned i; |
986 | ||
987 | for (i = 0; i < ELEMENTSOF(table); i++) { | |
988 | char *e; | |
989 | ||
990 | e = startswith(p, table[i].suffix); | |
991 | if (e) { | |
992 | *multiplier = table[i].usec; | |
993 | return e; | |
994 | } | |
995 | } | |
9a98c7a1 | 996 | |
240a7ba9 ZJS |
997 | return p; |
998 | } | |
999 | ||
1000 | int parse_time(const char *t, usec_t *usec, usec_t default_unit) { | |
b1d6dcf5 | 1001 | const char *p, *s; |
9a98c7a1 | 1002 | usec_t r = 0; |
cb0dac05 | 1003 | bool something = false; |
9a98c7a1 LP |
1004 | |
1005 | assert(t); | |
1006 | assert(usec); | |
519cffec | 1007 | assert(default_unit > 0); |
9a98c7a1 LP |
1008 | |
1009 | p = t; | |
b1d6dcf5 ZJS |
1010 | |
1011 | p += strspn(p, WHITESPACE); | |
1012 | s = startswith(p, "infinity"); | |
1013 | if (s) { | |
1014 | s += strspn(s, WHITESPACE); | |
1015 | if (*s != 0) | |
1016 | return -EINVAL; | |
1017 | ||
1018 | *usec = USEC_INFINITY; | |
1019 | return 0; | |
1020 | } | |
1021 | ||
cb0dac05 LP |
1022 | for (;;) { |
1023 | long long l, z = 0; | |
9a98c7a1 | 1024 | char *e; |
240a7ba9 ZJS |
1025 | unsigned n = 0; |
1026 | usec_t multiplier = default_unit, k; | |
cb0dac05 LP |
1027 | |
1028 | p += strspn(p, WHITESPACE); | |
1029 | ||
1030 | if (*p == 0) { | |
1031 | if (!something) | |
1032 | return -EINVAL; | |
1033 | ||
1034 | break; | |
1035 | } | |
9a98c7a1 LP |
1036 | |
1037 | errno = 0; | |
1038 | l = strtoll(p, &e, 10); | |
8333c77e | 1039 | if (errno > 0) |
9a98c7a1 | 1040 | return -errno; |
9a98c7a1 LP |
1041 | if (l < 0) |
1042 | return -ERANGE; | |
1043 | ||
cb0dac05 LP |
1044 | if (*e == '.') { |
1045 | char *b = e + 1; | |
1046 | ||
1047 | errno = 0; | |
1048 | z = strtoll(b, &e, 10); | |
1049 | if (errno > 0) | |
1050 | return -errno; | |
1051 | ||
1052 | if (z < 0) | |
1053 | return -ERANGE; | |
1054 | ||
1055 | if (e == b) | |
1056 | return -EINVAL; | |
1057 | ||
1058 | n = e - b; | |
1059 | ||
1060 | } else if (e == p) | |
9a98c7a1 LP |
1061 | return -EINVAL; |
1062 | ||
1063 | e += strspn(e, WHITESPACE); | |
240a7ba9 | 1064 | p = extract_multiplier(e, &multiplier); |
9a98c7a1 | 1065 | |
519cffec LP |
1066 | something = true; |
1067 | ||
1068 | k = (usec_t) z * multiplier; | |
1069 | ||
1070 | for (; n > 0; n--) | |
1071 | k /= 10; | |
1072 | ||
1073 | r += (usec_t) l * multiplier + k; | |
cb0dac05 | 1074 | } |
9a98c7a1 LP |
1075 | |
1076 | *usec = r; | |
1077 | ||
1078 | return 0; | |
1079 | } | |
1080 | ||
519cffec LP |
1081 | int parse_sec(const char *t, usec_t *usec) { |
1082 | return parse_time(t, usec, USEC_PER_SEC); | |
1083 | } | |
1084 | ||
0004f698 | 1085 | int parse_sec_fix_0(const char *t, usec_t *usec) { |
eae51da3 LP |
1086 | assert(t); |
1087 | assert(usec); | |
1088 | ||
0004f698 | 1089 | t += strspn(t, WHITESPACE); |
eae51da3 | 1090 | |
0004f698 ZJS |
1091 | if (streq(t, "0")) { |
1092 | *usec = USEC_INFINITY; | |
1093 | return 0; | |
1094 | } | |
1095 | ||
1096 | return parse_sec(t, usec); | |
1097 | } | |
1098 | ||
9a98c7a1 LP |
1099 | int parse_nsec(const char *t, nsec_t *nsec) { |
1100 | static const struct { | |
1101 | const char *suffix; | |
1102 | nsec_t nsec; | |
1103 | } table[] = { | |
1104 | { "seconds", NSEC_PER_SEC }, | |
1105 | { "second", NSEC_PER_SEC }, | |
1106 | { "sec", NSEC_PER_SEC }, | |
1107 | { "s", NSEC_PER_SEC }, | |
1108 | { "minutes", NSEC_PER_MINUTE }, | |
1109 | { "minute", NSEC_PER_MINUTE }, | |
1110 | { "min", NSEC_PER_MINUTE }, | |
1111 | { "months", NSEC_PER_MONTH }, | |
1112 | { "month", NSEC_PER_MONTH }, | |
1113 | { "msec", NSEC_PER_MSEC }, | |
1114 | { "ms", NSEC_PER_MSEC }, | |
1115 | { "m", NSEC_PER_MINUTE }, | |
1116 | { "hours", NSEC_PER_HOUR }, | |
1117 | { "hour", NSEC_PER_HOUR }, | |
1118 | { "hr", NSEC_PER_HOUR }, | |
1119 | { "h", NSEC_PER_HOUR }, | |
1120 | { "days", NSEC_PER_DAY }, | |
1121 | { "day", NSEC_PER_DAY }, | |
1122 | { "d", NSEC_PER_DAY }, | |
1123 | { "weeks", NSEC_PER_WEEK }, | |
1124 | { "week", NSEC_PER_WEEK }, | |
1125 | { "w", NSEC_PER_WEEK }, | |
1126 | { "years", NSEC_PER_YEAR }, | |
1127 | { "year", NSEC_PER_YEAR }, | |
1128 | { "y", NSEC_PER_YEAR }, | |
1129 | { "usec", NSEC_PER_USEC }, | |
1130 | { "us", NSEC_PER_USEC }, | |
5efdbf11 | 1131 | { "µs", NSEC_PER_USEC }, |
9a98c7a1 LP |
1132 | { "nsec", 1ULL }, |
1133 | { "ns", 1ULL }, | |
1134 | { "", 1ULL }, /* default is nsec */ | |
1135 | }; | |
1136 | ||
e73c78c2 | 1137 | const char *p, *s; |
9a98c7a1 | 1138 | nsec_t r = 0; |
cb0dac05 | 1139 | bool something = false; |
9a98c7a1 LP |
1140 | |
1141 | assert(t); | |
1142 | assert(nsec); | |
1143 | ||
1144 | p = t; | |
e73c78c2 LP |
1145 | |
1146 | p += strspn(p, WHITESPACE); | |
1147 | s = startswith(p, "infinity"); | |
1148 | if (s) { | |
1149 | s += strspn(s, WHITESPACE); | |
8e8933ca | 1150 | if (*s != 0) |
e73c78c2 LP |
1151 | return -EINVAL; |
1152 | ||
1153 | *nsec = NSEC_INFINITY; | |
1154 | return 0; | |
1155 | } | |
1156 | ||
cb0dac05 LP |
1157 | for (;;) { |
1158 | long long l, z = 0; | |
9a98c7a1 | 1159 | char *e; |
cb0dac05 LP |
1160 | unsigned i, n = 0; |
1161 | ||
1162 | p += strspn(p, WHITESPACE); | |
1163 | ||
1164 | if (*p == 0) { | |
1165 | if (!something) | |
1166 | return -EINVAL; | |
1167 | ||
1168 | break; | |
1169 | } | |
9a98c7a1 LP |
1170 | |
1171 | errno = 0; | |
1172 | l = strtoll(p, &e, 10); | |
1173 | ||
8333c77e | 1174 | if (errno > 0) |
9a98c7a1 LP |
1175 | return -errno; |
1176 | ||
1177 | if (l < 0) | |
1178 | return -ERANGE; | |
1179 | ||
cb0dac05 LP |
1180 | if (*e == '.') { |
1181 | char *b = e + 1; | |
1182 | ||
1183 | errno = 0; | |
1184 | z = strtoll(b, &e, 10); | |
1185 | if (errno > 0) | |
1186 | return -errno; | |
1187 | ||
1188 | if (z < 0) | |
1189 | return -ERANGE; | |
1190 | ||
1191 | if (e == b) | |
1192 | return -EINVAL; | |
1193 | ||
1194 | n = e - b; | |
1195 | ||
1196 | } else if (e == p) | |
9a98c7a1 LP |
1197 | return -EINVAL; |
1198 | ||
1199 | e += strspn(e, WHITESPACE); | |
1200 | ||
1201 | for (i = 0; i < ELEMENTSOF(table); i++) | |
1202 | if (startswith(e, table[i].suffix)) { | |
cb0dac05 LP |
1203 | nsec_t k = (nsec_t) z * table[i].nsec; |
1204 | ||
1205 | for (; n > 0; n--) | |
1206 | k /= 10; | |
1207 | ||
1208 | r += (nsec_t) l * table[i].nsec + k; | |
9a98c7a1 | 1209 | p = e + strlen(table[i].suffix); |
cb0dac05 LP |
1210 | |
1211 | something = true; | |
9a98c7a1 LP |
1212 | break; |
1213 | } | |
1214 | ||
1215 | if (i >= ELEMENTSOF(table)) | |
1216 | return -EINVAL; | |
1217 | ||
cb0dac05 | 1218 | } |
9a98c7a1 LP |
1219 | |
1220 | *nsec = r; | |
1221 | ||
1222 | return 0; | |
1223 | } | |
03cc26dd LP |
1224 | |
1225 | bool ntp_synced(void) { | |
1226 | struct timex txc = {}; | |
1227 | ||
1228 | if (adjtimex(&txc) < 0) | |
1229 | return false; | |
1230 | ||
1231 | if (txc.status & STA_UNSYNC) | |
1232 | return false; | |
1233 | ||
1234 | return true; | |
1235 | } | |
75683450 LP |
1236 | |
1237 | int get_timezones(char ***ret) { | |
1238 | _cleanup_fclose_ FILE *f = NULL; | |
1239 | _cleanup_strv_free_ char **zones = NULL; | |
1240 | size_t n_zones = 0, n_allocated = 0; | |
1241 | ||
1242 | assert(ret); | |
1243 | ||
1244 | zones = strv_new("UTC", NULL); | |
1245 | if (!zones) | |
1246 | return -ENOMEM; | |
1247 | ||
1248 | n_allocated = 2; | |
1249 | n_zones = 1; | |
1250 | ||
1251 | f = fopen("/usr/share/zoneinfo/zone.tab", "re"); | |
1252 | if (f) { | |
1253 | char l[LINE_MAX]; | |
1254 | ||
1255 | FOREACH_LINE(l, f, return -errno) { | |
1256 | char *p, *w; | |
1257 | size_t k; | |
1258 | ||
1259 | p = strstrip(l); | |
1260 | ||
1261 | if (isempty(p) || *p == '#') | |
1262 | continue; | |
1263 | ||
1264 | /* Skip over country code */ | |
1265 | p += strcspn(p, WHITESPACE); | |
1266 | p += strspn(p, WHITESPACE); | |
1267 | ||
1268 | /* Skip over coordinates */ | |
1269 | p += strcspn(p, WHITESPACE); | |
1270 | p += strspn(p, WHITESPACE); | |
1271 | ||
1272 | /* Found timezone name */ | |
1273 | k = strcspn(p, WHITESPACE); | |
1274 | if (k <= 0) | |
1275 | continue; | |
1276 | ||
1277 | w = strndup(p, k); | |
1278 | if (!w) | |
1279 | return -ENOMEM; | |
1280 | ||
1281 | if (!GREEDY_REALLOC(zones, n_allocated, n_zones + 2)) { | |
1282 | free(w); | |
1283 | return -ENOMEM; | |
1284 | } | |
1285 | ||
1286 | zones[n_zones++] = w; | |
1287 | zones[n_zones] = NULL; | |
1288 | } | |
1289 | ||
1290 | strv_sort(zones); | |
1291 | ||
1292 | } else if (errno != ENOENT) | |
1293 | return -errno; | |
1294 | ||
1295 | *ret = zones; | |
1296 | zones = NULL; | |
1297 | ||
1298 | return 0; | |
1299 | } | |
1300 | ||
1301 | bool timezone_is_valid(const char *name) { | |
1302 | bool slash = false; | |
1303 | const char *p, *t; | |
1304 | struct stat st; | |
1305 | ||
5c904ba5 LP |
1306 | if (isempty(name)) |
1307 | return false; | |
1308 | ||
1309 | if (name[0] == '/') | |
75683450 LP |
1310 | return false; |
1311 | ||
1312 | for (p = name; *p; p++) { | |
1313 | if (!(*p >= '0' && *p <= '9') && | |
1314 | !(*p >= 'a' && *p <= 'z') && | |
1315 | !(*p >= 'A' && *p <= 'Z') && | |
4c701096 | 1316 | !IN_SET(*p, '-', '_', '+', '/')) |
75683450 LP |
1317 | return false; |
1318 | ||
1319 | if (*p == '/') { | |
1320 | ||
1321 | if (slash) | |
1322 | return false; | |
1323 | ||
1324 | slash = true; | |
1325 | } else | |
1326 | slash = false; | |
1327 | } | |
1328 | ||
1329 | if (slash) | |
1330 | return false; | |
1331 | ||
63c372cb | 1332 | t = strjoina("/usr/share/zoneinfo/", name); |
75683450 LP |
1333 | if (stat(t, &st) < 0) |
1334 | return false; | |
1335 | ||
1336 | if (!S_ISREG(st.st_mode)) | |
1337 | return false; | |
1338 | ||
1339 | return true; | |
1340 | } | |
77ff2de9 | 1341 | |
3411372e LP |
1342 | bool clock_boottime_supported(void) { |
1343 | static int supported = -1; | |
1344 | ||
1345 | /* Note that this checks whether CLOCK_BOOTTIME is available in general as well as available for timerfds()! */ | |
1346 | ||
1347 | if (supported < 0) { | |
1348 | int fd; | |
1349 | ||
1350 | fd = timerfd_create(CLOCK_BOOTTIME, TFD_NONBLOCK|TFD_CLOEXEC); | |
1351 | if (fd < 0) | |
1352 | supported = false; | |
1353 | else { | |
1354 | safe_close(fd); | |
1355 | supported = true; | |
1356 | } | |
77ff2de9 TG |
1357 | } |
1358 | ||
3411372e LP |
1359 | return supported; |
1360 | } | |
1361 | ||
1362 | clockid_t clock_boottime_or_monotonic(void) { | |
1363 | if (clock_boottime_supported()) | |
1364 | return CLOCK_BOOTTIME; | |
1365 | else | |
1366 | return CLOCK_MONOTONIC; | |
77ff2de9 | 1367 | } |
5c904ba5 | 1368 | |
fe624c4c LP |
1369 | bool clock_supported(clockid_t clock) { |
1370 | struct timespec ts; | |
1371 | ||
1372 | switch (clock) { | |
1373 | ||
1374 | case CLOCK_MONOTONIC: | |
1375 | case CLOCK_REALTIME: | |
1376 | return true; | |
1377 | ||
1378 | case CLOCK_BOOTTIME: | |
1379 | return clock_boottime_supported(); | |
1380 | ||
1381 | case CLOCK_BOOTTIME_ALARM: | |
1382 | if (!clock_boottime_supported()) | |
1383 | return false; | |
1384 | ||
ec251fe7 | 1385 | /* fall through */ |
fe624c4c LP |
1386 | |
1387 | default: | |
1388 | /* For everything else, check properly */ | |
1389 | return clock_gettime(clock, &ts) >= 0; | |
1390 | } | |
1391 | } | |
1392 | ||
64d6c229 | 1393 | int get_timezone(char **tz) { |
5c904ba5 LP |
1394 | _cleanup_free_ char *t = NULL; |
1395 | const char *e; | |
1396 | char *z; | |
1397 | int r; | |
1398 | ||
1399 | r = readlink_malloc("/etc/localtime", &t); | |
1400 | if (r < 0) | |
1401 | return r; /* returns EINVAL if not a symlink */ | |
1402 | ||
1403 | e = path_startswith(t, "/usr/share/zoneinfo/"); | |
1404 | if (!e) | |
1405 | e = path_startswith(t, "../usr/share/zoneinfo/"); | |
1406 | if (!e) | |
1407 | return -EINVAL; | |
1408 | ||
1409 | if (!timezone_is_valid(e)) | |
1410 | return -EINVAL; | |
1411 | ||
1412 | z = strdup(e); | |
1413 | if (!z) | |
1414 | return -ENOMEM; | |
1415 | ||
64d6c229 | 1416 | *tz = z; |
5c904ba5 LP |
1417 | return 0; |
1418 | } | |
7c67c79c HV |
1419 | |
1420 | time_t mktime_or_timegm(struct tm *tm, bool utc) { | |
1421 | return utc ? timegm(tm) : mktime(tm); | |
1422 | } | |
1423 | ||
1424 | struct tm *localtime_or_gmtime_r(const time_t *t, struct tm *tm, bool utc) { | |
1425 | return utc ? gmtime_r(t, tm) : localtime_r(t, tm); | |
1426 | } | |
87b8ce69 SS |
1427 | |
1428 | unsigned long usec_to_jiffies(usec_t u) { | |
1429 | static thread_local unsigned long hz = 0; | |
1430 | long r; | |
1431 | ||
1432 | if (hz == 0) { | |
1433 | r = sysconf(_SC_CLK_TCK); | |
1434 | ||
1435 | assert(r > 0); | |
70887c5f | 1436 | hz = r; |
87b8ce69 SS |
1437 | } |
1438 | ||
1439 | return DIV_ROUND_UP(u , USEC_PER_SEC / hz); | |
1440 | } | |
1007ec60 LP |
1441 | |
1442 | usec_t usec_shift_clock(usec_t x, clockid_t from, clockid_t to) { | |
1443 | usec_t a, b; | |
1444 | ||
1445 | if (x == USEC_INFINITY) | |
1446 | return USEC_INFINITY; | |
1447 | if (map_clock_id(from) == map_clock_id(to)) | |
1448 | return x; | |
1449 | ||
1450 | a = now(from); | |
1451 | b = now(to); | |
1452 | ||
1453 | if (x > a) | |
1454 | /* x lies in the future */ | |
1455 | return usec_add(b, usec_sub_unsigned(x, a)); | |
1456 | else | |
1457 | /* x lies in the past */ | |
1458 | return usec_sub_unsigned(b, usec_sub_unsigned(a, x)); | |
1459 | } |