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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> |
48d26c01 | 24 | #include <sys/mman.h> |
11c3a366 TA |
25 | #include <sys/stat.h> |
26 | #include <sys/time.h> | |
77ff2de9 | 27 | #include <sys/timerfd.h> |
07630cea | 28 | #include <sys/timex.h> |
11c3a366 TA |
29 | #include <sys/types.h> |
30 | #include <unistd.h> | |
9a98c7a1 | 31 | |
b5efdb8a | 32 | #include "alloc-util.h" |
3ffd4af2 | 33 | #include "fd-util.h" |
0d39fa9c | 34 | #include "fileio.h" |
f4f15635 | 35 | #include "fs-util.h" |
11c3a366 TA |
36 | #include "log.h" |
37 | #include "macro.h" | |
93cc7779 TA |
38 | #include "parse-util.h" |
39 | #include "path-util.h" | |
07630cea | 40 | #include "string-util.h" |
75683450 | 41 | #include "strv.h" |
07630cea | 42 | #include "time-util.h" |
9a98c7a1 | 43 | |
32c1f5a5 LP |
44 | static clockid_t map_clock_id(clockid_t c) { |
45 | ||
46 | /* Some more exotic archs (s390, ppc, …) lack the "ALARM" flavour of the clocks. Thus, clock_gettime() will | |
47 | * fail for them. Since they are essentially the same as their non-ALARM pendants (their only difference is | |
48 | * when timers are set on them), let's just map them accordingly. This way, we can get the correct time even on | |
bdf19f8f | 49 | * those archs. */ |
32c1f5a5 LP |
50 | |
51 | switch (c) { | |
52 | ||
53 | case CLOCK_BOOTTIME_ALARM: | |
bdf19f8f | 54 | return CLOCK_BOOTTIME; |
32c1f5a5 LP |
55 | |
56 | case CLOCK_REALTIME_ALARM: | |
57 | return CLOCK_REALTIME; | |
58 | ||
59 | default: | |
60 | return c; | |
61 | } | |
62 | } | |
63 | ||
9a98c7a1 LP |
64 | usec_t now(clockid_t clock_id) { |
65 | struct timespec ts; | |
66 | ||
32c1f5a5 | 67 | assert_se(clock_gettime(map_clock_id(clock_id), &ts) == 0); |
9a98c7a1 LP |
68 | |
69 | return timespec_load(&ts); | |
70 | } | |
71 | ||
45d7a8bb LP |
72 | nsec_t now_nsec(clockid_t clock_id) { |
73 | struct timespec ts; | |
74 | ||
32c1f5a5 | 75 | assert_se(clock_gettime(map_clock_id(clock_id), &ts) == 0); |
45d7a8bb LP |
76 | |
77 | return timespec_load_nsec(&ts); | |
78 | } | |
79 | ||
9a98c7a1 LP |
80 | dual_timestamp* dual_timestamp_get(dual_timestamp *ts) { |
81 | assert(ts); | |
82 | ||
83 | ts->realtime = now(CLOCK_REALTIME); | |
84 | ts->monotonic = now(CLOCK_MONOTONIC); | |
85 | ||
86 | return ts; | |
87 | } | |
88 | ||
fe624c4c LP |
89 | triple_timestamp* triple_timestamp_get(triple_timestamp *ts) { |
90 | assert(ts); | |
91 | ||
92 | ts->realtime = now(CLOCK_REALTIME); | |
93 | ts->monotonic = now(CLOCK_MONOTONIC); | |
94 | ts->boottime = clock_boottime_supported() ? now(CLOCK_BOOTTIME) : USEC_INFINITY; | |
95 | ||
96 | return ts; | |
97 | } | |
98 | ||
9a98c7a1 LP |
99 | dual_timestamp* dual_timestamp_from_realtime(dual_timestamp *ts, usec_t u) { |
100 | int64_t delta; | |
101 | assert(ts); | |
102 | ||
75a5f1d8 LP |
103 | if (u == USEC_INFINITY || u <= 0) { |
104 | ts->realtime = ts->monotonic = u; | |
cae0c5e0 LP |
105 | return ts; |
106 | } | |
107 | ||
9a98c7a1 LP |
108 | ts->realtime = u; |
109 | ||
75a5f1d8 | 110 | delta = (int64_t) now(CLOCK_REALTIME) - (int64_t) u; |
54d8ef14 | 111 | ts->monotonic = usec_sub_signed(now(CLOCK_MONOTONIC), delta); |
9a98c7a1 LP |
112 | |
113 | return ts; | |
114 | } | |
115 | ||
fe624c4c LP |
116 | triple_timestamp* triple_timestamp_from_realtime(triple_timestamp *ts, usec_t u) { |
117 | int64_t delta; | |
118 | ||
119 | assert(ts); | |
120 | ||
121 | if (u == USEC_INFINITY || u <= 0) { | |
122 | ts->realtime = ts->monotonic = ts->boottime = u; | |
123 | return ts; | |
124 | } | |
125 | ||
126 | ts->realtime = u; | |
127 | delta = (int64_t) now(CLOCK_REALTIME) - (int64_t) u; | |
54d8ef14 LP |
128 | ts->monotonic = usec_sub_signed(now(CLOCK_MONOTONIC), delta); |
129 | ts->boottime = clock_boottime_supported() ? usec_sub_signed(now(CLOCK_BOOTTIME), delta) : USEC_INFINITY; | |
fe624c4c LP |
130 | |
131 | return ts; | |
132 | } | |
133 | ||
cae0c5e0 LP |
134 | dual_timestamp* dual_timestamp_from_monotonic(dual_timestamp *ts, usec_t u) { |
135 | int64_t delta; | |
136 | assert(ts); | |
137 | ||
3a43da28 KS |
138 | if (u == USEC_INFINITY) { |
139 | ts->realtime = ts->monotonic = USEC_INFINITY; | |
cae0c5e0 LP |
140 | return ts; |
141 | } | |
142 | ||
143 | ts->monotonic = u; | |
144 | delta = (int64_t) now(CLOCK_MONOTONIC) - (int64_t) u; | |
54d8ef14 | 145 | ts->realtime = usec_sub_signed(now(CLOCK_REALTIME), delta); |
cae0c5e0 LP |
146 | |
147 | return ts; | |
148 | } | |
149 | ||
fbe55073 LP |
150 | dual_timestamp* dual_timestamp_from_boottime_or_monotonic(dual_timestamp *ts, usec_t u) { |
151 | int64_t delta; | |
152 | ||
153 | if (u == USEC_INFINITY) { | |
154 | ts->realtime = ts->monotonic = USEC_INFINITY; | |
155 | return ts; | |
156 | } | |
fbe55073 | 157 | |
0345d252 | 158 | dual_timestamp_get(ts); |
fbe55073 | 159 | delta = (int64_t) now(clock_boottime_or_monotonic()) - (int64_t) u; |
54d8ef14 LP |
160 | ts->realtime = usec_sub_signed(ts->realtime, delta); |
161 | ts->monotonic = usec_sub_signed(ts->monotonic, delta); | |
fbe55073 LP |
162 | |
163 | return ts; | |
164 | } | |
165 | ||
fe624c4c LP |
166 | usec_t triple_timestamp_by_clock(triple_timestamp *ts, clockid_t clock) { |
167 | ||
168 | switch (clock) { | |
169 | ||
170 | case CLOCK_REALTIME: | |
171 | case CLOCK_REALTIME_ALARM: | |
172 | return ts->realtime; | |
173 | ||
174 | case CLOCK_MONOTONIC: | |
175 | return ts->monotonic; | |
176 | ||
177 | case CLOCK_BOOTTIME: | |
178 | case CLOCK_BOOTTIME_ALARM: | |
179 | return ts->boottime; | |
180 | ||
181 | default: | |
182 | return USEC_INFINITY; | |
183 | } | |
184 | } | |
185 | ||
9a98c7a1 LP |
186 | usec_t timespec_load(const struct timespec *ts) { |
187 | assert(ts); | |
188 | ||
c477ff14 | 189 | if (ts->tv_sec < 0 || ts->tv_nsec < 0) |
3a43da28 | 190 | return USEC_INFINITY; |
9a98c7a1 LP |
191 | |
192 | if ((usec_t) ts->tv_sec > (UINT64_MAX - (ts->tv_nsec / NSEC_PER_USEC)) / USEC_PER_SEC) | |
3a43da28 | 193 | return USEC_INFINITY; |
9a98c7a1 LP |
194 | |
195 | return | |
196 | (usec_t) ts->tv_sec * USEC_PER_SEC + | |
197 | (usec_t) ts->tv_nsec / NSEC_PER_USEC; | |
198 | } | |
199 | ||
3a730176 | 200 | nsec_t timespec_load_nsec(const struct timespec *ts) { |
45d7a8bb LP |
201 | assert(ts); |
202 | ||
c477ff14 | 203 | if (ts->tv_sec < 0 || ts->tv_nsec < 0) |
45d7a8bb LP |
204 | return NSEC_INFINITY; |
205 | ||
a2daa2f0 ZJS |
206 | if ((nsec_t) ts->tv_sec >= (UINT64_MAX - ts->tv_nsec) / NSEC_PER_SEC) |
207 | return NSEC_INFINITY; | |
208 | ||
209 | return (nsec_t) ts->tv_sec * NSEC_PER_SEC + (nsec_t) ts->tv_nsec; | |
45d7a8bb LP |
210 | } |
211 | ||
9a98c7a1 LP |
212 | struct timespec *timespec_store(struct timespec *ts, usec_t u) { |
213 | assert(ts); | |
214 | ||
f977849c | 215 | if (u == USEC_INFINITY || |
d201d908 | 216 | u / USEC_PER_SEC >= TIME_T_MAX) { |
9a98c7a1 LP |
217 | ts->tv_sec = (time_t) -1; |
218 | ts->tv_nsec = (long) -1; | |
219 | return ts; | |
220 | } | |
221 | ||
222 | ts->tv_sec = (time_t) (u / USEC_PER_SEC); | |
223 | ts->tv_nsec = (long int) ((u % USEC_PER_SEC) * NSEC_PER_USEC); | |
224 | ||
225 | return ts; | |
226 | } | |
227 | ||
228 | usec_t timeval_load(const struct timeval *tv) { | |
229 | assert(tv); | |
230 | ||
c477ff14 | 231 | if (tv->tv_sec < 0 || tv->tv_usec < 0) |
3a43da28 | 232 | return USEC_INFINITY; |
9a98c7a1 LP |
233 | |
234 | if ((usec_t) tv->tv_sec > (UINT64_MAX - tv->tv_usec) / USEC_PER_SEC) | |
3a43da28 | 235 | return USEC_INFINITY; |
9a98c7a1 LP |
236 | |
237 | return | |
238 | (usec_t) tv->tv_sec * USEC_PER_SEC + | |
239 | (usec_t) tv->tv_usec; | |
240 | } | |
241 | ||
242 | struct timeval *timeval_store(struct timeval *tv, usec_t u) { | |
243 | assert(tv); | |
244 | ||
68bdd2d2 | 245 | if (u == USEC_INFINITY || |
f977849c | 246 | u / USEC_PER_SEC > TIME_T_MAX) { |
9a98c7a1 LP |
247 | tv->tv_sec = (time_t) -1; |
248 | tv->tv_usec = (suseconds_t) -1; | |
4d89874a ZJS |
249 | } else { |
250 | tv->tv_sec = (time_t) (u / USEC_PER_SEC); | |
251 | tv->tv_usec = (suseconds_t) (u % USEC_PER_SEC); | |
9a98c7a1 LP |
252 | } |
253 | ||
9a98c7a1 LP |
254 | return tv; |
255 | } | |
256 | ||
21b3a0fc LP |
257 | static char *format_timestamp_internal( |
258 | char *buf, | |
259 | size_t l, | |
260 | usec_t t, | |
261 | bool utc, | |
262 | bool us) { | |
263 | ||
264 | /* The weekdays in non-localized (English) form. We use this instead of the localized form, so that our | |
265 | * generated timestamps may be parsed with parse_timestamp(), and always read the same. */ | |
266 | static const char * const weekdays[] = { | |
267 | [0] = "Sun", | |
268 | [1] = "Mon", | |
269 | [2] = "Tue", | |
270 | [3] = "Wed", | |
271 | [4] = "Thu", | |
272 | [5] = "Fri", | |
273 | [6] = "Sat", | |
274 | }; | |
275 | ||
9a98c7a1 LP |
276 | struct tm tm; |
277 | time_t sec; | |
21b3a0fc | 278 | size_t n; |
9a98c7a1 LP |
279 | |
280 | assert(buf); | |
9a98c7a1 | 281 | |
21b3a0fc LP |
282 | if (l < |
283 | 3 + /* week day */ | |
284 | 1 + 10 + /* space and date */ | |
285 | 1 + 8 + /* space and time */ | |
286 | (us ? 1 + 6 : 0) + /* "." and microsecond part */ | |
287 | 1 + 1 + /* space and shortest possible zone */ | |
288 | 1) | |
289 | return NULL; /* Not enough space even for the shortest form. */ | |
3a43da28 | 290 | if (t <= 0 || t == USEC_INFINITY) |
21b3a0fc LP |
291 | return NULL; /* Timestamp is unset */ |
292 | ||
1bb4b028 LP |
293 | /* Let's not format times with years > 9999 */ |
294 | if (t > USEC_TIMESTAMP_FORMATTABLE_MAX) | |
295 | return NULL; | |
296 | ||
21b3a0fc | 297 | sec = (time_t) (t / USEC_PER_SEC); /* Round down */ |
21b3a0fc LP |
298 | |
299 | if (!localtime_or_gmtime_r(&sec, &tm, utc)) | |
9a98c7a1 LP |
300 | return NULL; |
301 | ||
21b3a0fc LP |
302 | /* Start with the week day */ |
303 | assert((size_t) tm.tm_wday < ELEMENTSOF(weekdays)); | |
304 | memcpy(buf, weekdays[tm.tm_wday], 4); | |
9a98c7a1 | 305 | |
21b3a0fc LP |
306 | /* Add the main components */ |
307 | if (strftime(buf + 3, l - 3, " %Y-%m-%d %H:%M:%S", &tm) <= 0) | |
308 | return NULL; /* Doesn't fit */ | |
0056086a | 309 | |
21b3a0fc | 310 | /* Append the microseconds part, if that's requested */ |
0056086a | 311 | if (us) { |
21b3a0fc LP |
312 | n = strlen(buf); |
313 | if (n + 8 > l) | |
314 | return NULL; /* Microseconds part doesn't fit. */ | |
315 | ||
70887c5f | 316 | sprintf(buf + n, ".%06"PRI_USEC, t % USEC_PER_SEC); |
21b3a0fc LP |
317 | } |
318 | ||
319 | /* Append the timezone */ | |
320 | n = strlen(buf); | |
321 | if (utc) { | |
322 | /* If this is UTC then let's explicitly use the "UTC" string here, because gmtime_r() normally uses the | |
323 | * obsolete "GMT" instead. */ | |
324 | if (n + 5 > l) | |
325 | return NULL; /* "UTC" doesn't fit. */ | |
326 | ||
327 | strcpy(buf + n, " UTC"); | |
328 | ||
329 | } else if (!isempty(tm.tm_zone)) { | |
330 | size_t tn; | |
331 | ||
332 | /* An explicit timezone is specified, let's use it, if it fits */ | |
333 | tn = strlen(tm.tm_zone); | |
334 | if (n + 1 + tn + 1 > l) { | |
335 | /* The full time zone does not fit in. Yuck. */ | |
336 | ||
337 | if (n + 1 + _POSIX_TZNAME_MAX + 1 > l) | |
338 | return NULL; /* Not even enough space for the POSIX minimum (of 6)? In that case, complain that it doesn't fit */ | |
339 | ||
340 | /* So the time zone doesn't fit in fully, but the caller passed enough space for the POSIX | |
341 | * minimum time zone length. In this case suppress the timezone entirely, in order not to dump | |
342 | * an overly long, hard to read string on the user. This should be safe, because the user will | |
343 | * assume the local timezone anyway if none is shown. And so does parse_timestamp(). */ | |
344 | } else { | |
345 | buf[n++] = ' '; | |
346 | strcpy(buf + n, tm.tm_zone); | |
347 | } | |
0056086a | 348 | } |
9a98c7a1 LP |
349 | |
350 | return buf; | |
351 | } | |
352 | ||
a62e83b4 | 353 | char *format_timestamp(char *buf, size_t l, usec_t t) { |
0056086a | 354 | return format_timestamp_internal(buf, l, t, false, false); |
a62e83b4 JS |
355 | } |
356 | ||
5ab99e07 | 357 | char *format_timestamp_utc(char *buf, size_t l, usec_t t) { |
0056086a | 358 | return format_timestamp_internal(buf, l, t, true, false); |
f02d8367 ZJS |
359 | } |
360 | ||
5ab99e07 | 361 | char *format_timestamp_us(char *buf, size_t l, usec_t t) { |
0056086a | 362 | return format_timestamp_internal(buf, l, t, false, true); |
5ab99e07 LP |
363 | } |
364 | ||
365 | char *format_timestamp_us_utc(char *buf, size_t l, usec_t t) { | |
0056086a | 366 | return format_timestamp_internal(buf, l, t, true, true); |
5ab99e07 LP |
367 | } |
368 | ||
bbb8486e | 369 | char *format_timestamp_relative(char *buf, size_t l, usec_t t) { |
1fcf71f5 | 370 | const char *s; |
9a98c7a1 LP |
371 | usec_t n, d; |
372 | ||
65de0395 | 373 | if (t <= 0 || t == USEC_INFINITY) |
9a98c7a1 LP |
374 | return NULL; |
375 | ||
65de0395 | 376 | n = now(CLOCK_REALTIME); |
1fcf71f5 LP |
377 | if (n > t) { |
378 | d = n - t; | |
379 | s = "ago"; | |
380 | } else { | |
381 | d = t - n; | |
382 | s = "left"; | |
383 | } | |
9a98c7a1 LP |
384 | |
385 | if (d >= USEC_PER_YEAR) | |
609e002e | 386 | snprintf(buf, l, USEC_FMT " years " USEC_FMT " months %s", |
de0671ee ZJS |
387 | d / USEC_PER_YEAR, |
388 | (d % USEC_PER_YEAR) / USEC_PER_MONTH, s); | |
9a98c7a1 | 389 | else if (d >= USEC_PER_MONTH) |
609e002e | 390 | snprintf(buf, l, USEC_FMT " months " USEC_FMT " days %s", |
de0671ee ZJS |
391 | d / USEC_PER_MONTH, |
392 | (d % USEC_PER_MONTH) / USEC_PER_DAY, s); | |
9a98c7a1 | 393 | else if (d >= USEC_PER_WEEK) |
609e002e | 394 | snprintf(buf, l, USEC_FMT " weeks " USEC_FMT " days %s", |
de0671ee ZJS |
395 | d / USEC_PER_WEEK, |
396 | (d % USEC_PER_WEEK) / USEC_PER_DAY, s); | |
9a98c7a1 | 397 | else if (d >= 2*USEC_PER_DAY) |
609e002e | 398 | snprintf(buf, l, USEC_FMT " days %s", d / USEC_PER_DAY, s); |
9a98c7a1 | 399 | else if (d >= 25*USEC_PER_HOUR) |
609e002e | 400 | snprintf(buf, l, "1 day " USEC_FMT "h %s", |
de0671ee | 401 | (d - USEC_PER_DAY) / USEC_PER_HOUR, s); |
9a98c7a1 | 402 | else if (d >= 6*USEC_PER_HOUR) |
609e002e | 403 | snprintf(buf, l, USEC_FMT "h %s", |
de0671ee | 404 | d / USEC_PER_HOUR, s); |
9a98c7a1 | 405 | else if (d >= USEC_PER_HOUR) |
609e002e | 406 | snprintf(buf, l, USEC_FMT "h " USEC_FMT "min %s", |
de0671ee ZJS |
407 | d / USEC_PER_HOUR, |
408 | (d % USEC_PER_HOUR) / USEC_PER_MINUTE, s); | |
9a98c7a1 | 409 | else if (d >= 5*USEC_PER_MINUTE) |
609e002e | 410 | snprintf(buf, l, USEC_FMT "min %s", |
de0671ee | 411 | d / USEC_PER_MINUTE, s); |
9a98c7a1 | 412 | else if (d >= USEC_PER_MINUTE) |
609e002e | 413 | snprintf(buf, l, USEC_FMT "min " USEC_FMT "s %s", |
de0671ee ZJS |
414 | d / USEC_PER_MINUTE, |
415 | (d % USEC_PER_MINUTE) / USEC_PER_SEC, s); | |
9a98c7a1 | 416 | else if (d >= USEC_PER_SEC) |
609e002e | 417 | snprintf(buf, l, USEC_FMT "s %s", |
de0671ee | 418 | d / USEC_PER_SEC, s); |
9a98c7a1 | 419 | else if (d >= USEC_PER_MSEC) |
609e002e | 420 | snprintf(buf, l, USEC_FMT "ms %s", |
de0671ee | 421 | d / USEC_PER_MSEC, s); |
9a98c7a1 | 422 | else if (d > 0) |
de0671ee ZJS |
423 | snprintf(buf, l, USEC_FMT"us %s", |
424 | d, s); | |
9a98c7a1 LP |
425 | else |
426 | snprintf(buf, l, "now"); | |
427 | ||
428 | buf[l-1] = 0; | |
429 | return buf; | |
430 | } | |
431 | ||
2fa4092c | 432 | char *format_timespan(char *buf, size_t l, usec_t t, usec_t accuracy) { |
9a98c7a1 LP |
433 | static const struct { |
434 | const char *suffix; | |
435 | usec_t usec; | |
436 | } table[] = { | |
eb55ec9f LP |
437 | { "y", USEC_PER_YEAR }, |
438 | { "month", USEC_PER_MONTH }, | |
439 | { "w", USEC_PER_WEEK }, | |
440 | { "d", USEC_PER_DAY }, | |
441 | { "h", USEC_PER_HOUR }, | |
442 | { "min", USEC_PER_MINUTE }, | |
443 | { "s", USEC_PER_SEC }, | |
444 | { "ms", USEC_PER_MSEC }, | |
445 | { "us", 1 }, | |
9a98c7a1 LP |
446 | }; |
447 | ||
448 | unsigned i; | |
449 | char *p = buf; | |
2fa4092c | 450 | bool something = false; |
9a98c7a1 LP |
451 | |
452 | assert(buf); | |
453 | assert(l > 0); | |
454 | ||
bb1fada8 LP |
455 | if (t == USEC_INFINITY) { |
456 | strncpy(p, "infinity", l-1); | |
457 | p[l-1] = 0; | |
458 | return p; | |
459 | } | |
460 | ||
461 | if (t <= 0) { | |
462 | strncpy(p, "0", l-1); | |
7c537b2e LP |
463 | p[l-1] = 0; |
464 | return p; | |
465 | } | |
466 | ||
7f602784 | 467 | /* The result of this function can be parsed with parse_sec */ |
9a98c7a1 LP |
468 | |
469 | for (i = 0; i < ELEMENTSOF(table); i++) { | |
7759ecb2 | 470 | int k = 0; |
9a98c7a1 | 471 | size_t n; |
2fa4092c LP |
472 | bool done = false; |
473 | usec_t a, b; | |
474 | ||
7c537b2e LP |
475 | if (t <= 0) |
476 | break; | |
2fa4092c | 477 | |
7c537b2e | 478 | if (t < accuracy && something) |
2fa4092c | 479 | break; |
9a98c7a1 LP |
480 | |
481 | if (t < table[i].usec) | |
482 | continue; | |
483 | ||
484 | if (l <= 1) | |
485 | break; | |
486 | ||
2fa4092c LP |
487 | a = t / table[i].usec; |
488 | b = t % table[i].usec; | |
489 | ||
490 | /* Let's see if we should shows this in dot notation */ | |
491 | if (t < USEC_PER_MINUTE && b > 0) { | |
492 | usec_t cc; | |
493 | int j; | |
494 | ||
495 | j = 0; | |
496 | for (cc = table[i].usec; cc > 1; cc /= 10) | |
497 | j++; | |
498 | ||
499 | for (cc = accuracy; cc > 1; cc /= 10) { | |
500 | b /= 10; | |
501 | j--; | |
502 | } | |
503 | ||
504 | if (j > 0) { | |
505 | k = snprintf(p, l, | |
70887c5f | 506 | "%s"USEC_FMT".%0*"PRI_USEC"%s", |
2fa4092c | 507 | p > buf ? " " : "", |
de0671ee | 508 | a, |
2fa4092c | 509 | j, |
70887c5f | 510 | b, |
2fa4092c LP |
511 | table[i].suffix); |
512 | ||
513 | t = 0; | |
514 | done = true; | |
515 | } | |
516 | } | |
517 | ||
518 | /* No? Then let's show it normally */ | |
519 | if (!done) { | |
520 | k = snprintf(p, l, | |
de0671ee | 521 | "%s"USEC_FMT"%s", |
2fa4092c | 522 | p > buf ? " " : "", |
de0671ee | 523 | a, |
2fa4092c LP |
524 | table[i].suffix); |
525 | ||
526 | t = b; | |
527 | } | |
528 | ||
9a98c7a1 LP |
529 | n = MIN((size_t) k, l); |
530 | ||
531 | l -= n; | |
532 | p += n; | |
533 | ||
2fa4092c | 534 | something = true; |
9a98c7a1 LP |
535 | } |
536 | ||
537 | *p = 0; | |
538 | ||
539 | return buf; | |
540 | } | |
541 | ||
542 | void dual_timestamp_serialize(FILE *f, const char *name, dual_timestamp *t) { | |
543 | ||
544 | assert(f); | |
545 | assert(name); | |
546 | assert(t); | |
547 | ||
548 | if (!dual_timestamp_is_set(t)) | |
549 | return; | |
550 | ||
de0671ee | 551 | fprintf(f, "%s="USEC_FMT" "USEC_FMT"\n", |
9a98c7a1 | 552 | name, |
de0671ee ZJS |
553 | t->realtime, |
554 | t->monotonic); | |
9a98c7a1 LP |
555 | } |
556 | ||
e911de99 | 557 | int dual_timestamp_deserialize(const char *value, dual_timestamp *t) { |
74c5b33b | 558 | uint64_t a, b; |
9c0565b2 | 559 | int r, pos; |
9a98c7a1 LP |
560 | |
561 | assert(value); | |
562 | assert(t); | |
563 | ||
9c0565b2 ZJS |
564 | pos = strspn(value, WHITESPACE); |
565 | if (value[pos] == '-') | |
566 | return -EINVAL; | |
567 | pos += strspn(value + pos, DIGITS); | |
568 | pos += strspn(value + pos, WHITESPACE); | |
569 | if (value[pos] == '-') | |
570 | return -EINVAL; | |
571 | ||
572 | r = sscanf(value, "%" PRIu64 "%" PRIu64 "%n", &a, &b, &pos); | |
573 | if (r != 2) { | |
574 | log_debug("Failed to parse dual timestamp value \"%s\".", value); | |
e911de99 | 575 | return -EINVAL; |
9a98c7a1 | 576 | } |
e911de99 | 577 | |
9c0565b2 ZJS |
578 | if (value[pos] != '\0') |
579 | /* trailing garbage */ | |
580 | return -EINVAL; | |
581 | ||
e911de99 LP |
582 | t->realtime = a; |
583 | t->monotonic = b; | |
584 | ||
585 | return 0; | |
9a98c7a1 LP |
586 | } |
587 | ||
b895a735 | 588 | int timestamp_deserialize(const char *value, usec_t *timestamp) { |
ebf30a08 AK |
589 | int r; |
590 | ||
591 | assert(value); | |
592 | ||
593 | r = safe_atou64(value, timestamp); | |
ebf30a08 | 594 | if (r < 0) |
b895a735 | 595 | return log_debug_errno(r, "Failed to parse timestamp value \"%s\": %m", value); |
ebf30a08 AK |
596 | |
597 | return r; | |
598 | } | |
599 | ||
48d26c01 | 600 | static int parse_timestamp_impl(const char *t, usec_t *usec, bool with_tz) { |
92134489 LP |
601 | static const struct { |
602 | const char *name; | |
603 | const int nr; | |
604 | } day_nr[] = { | |
605 | { "Sunday", 0 }, | |
606 | { "Sun", 0 }, | |
607 | { "Monday", 1 }, | |
608 | { "Mon", 1 }, | |
609 | { "Tuesday", 2 }, | |
610 | { "Tue", 2 }, | |
611 | { "Wednesday", 3 }, | |
612 | { "Wed", 3 }, | |
613 | { "Thursday", 4 }, | |
614 | { "Thu", 4 }, | |
615 | { "Friday", 5 }, | |
616 | { "Fri", 5 }, | |
617 | { "Saturday", 6 }, | |
618 | { "Sat", 6 }, | |
619 | }; | |
620 | ||
48d26c01 | 621 | const char *k, *utc = NULL, *tzn = NULL; |
9a98c7a1 LP |
622 | struct tm tm, copy; |
623 | time_t x; | |
e4eaf99a | 624 | usec_t x_usec, plus = 0, minus = 0, ret; |
21b3a0fc | 625 | int r, weekday = -1, dst = -1; |
92134489 | 626 | unsigned i; |
9a98c7a1 LP |
627 | |
628 | /* | |
629 | * Allowed syntaxes: | |
630 | * | |
631 | * 2012-09-22 16:34:22 | |
632 | * 2012-09-22 16:34 (seconds will be set to 0) | |
633 | * 2012-09-22 (time will be set to 00:00:00) | |
634 | * 16:34:22 (date will be set to today) | |
635 | * 16:34 (date will be set to today, seconds to 0) | |
636 | * now | |
637 | * yesterday (time is set to 00:00:00) | |
638 | * today (time is set to 00:00:00) | |
639 | * tomorrow (time is set to 00:00:00) | |
640 | * +5min | |
641 | * -5days | |
5ba6e094 | 642 | * @2147483647 (seconds since epoch) |
9a98c7a1 LP |
643 | * |
644 | */ | |
645 | ||
646 | assert(t); | |
647 | assert(usec); | |
648 | ||
48d26c01 | 649 | if (t[0] == '@' && !with_tz) |
e4eaf99a | 650 | return parse_sec(t + 1, usec); |
9a98c7a1 | 651 | |
e4eaf99a | 652 | ret = now(CLOCK_REALTIME); |
9a98c7a1 | 653 | |
48d26c01 IK |
654 | if (!with_tz) { |
655 | if (streq(t, "now")) | |
656 | goto finish; | |
9a98c7a1 | 657 | |
48d26c01 IK |
658 | else if (t[0] == '+') { |
659 | r = parse_sec(t+1, &plus); | |
660 | if (r < 0) | |
661 | return r; | |
9a98c7a1 | 662 | |
48d26c01 | 663 | goto finish; |
9a98c7a1 | 664 | |
48d26c01 IK |
665 | } else if (t[0] == '-') { |
666 | r = parse_sec(t+1, &minus); | |
667 | if (r < 0) | |
668 | return r; | |
9a98c7a1 | 669 | |
48d26c01 | 670 | goto finish; |
decad910 | 671 | |
48d26c01 IK |
672 | } else if ((k = endswith(t, " ago"))) { |
673 | t = strndupa(t, k - t); | |
decad910 | 674 | |
48d26c01 IK |
675 | r = parse_sec(t, &minus); |
676 | if (r < 0) | |
677 | return r; | |
decad910 | 678 | |
48d26c01 | 679 | goto finish; |
1fcf71f5 | 680 | |
48d26c01 IK |
681 | } else if ((k = endswith(t, " left"))) { |
682 | t = strndupa(t, k - t); | |
1fcf71f5 | 683 | |
48d26c01 IK |
684 | r = parse_sec(t, &plus); |
685 | if (r < 0) | |
686 | return r; | |
1fcf71f5 | 687 | |
48d26c01 IK |
688 | goto finish; |
689 | } | |
9a98c7a1 | 690 | |
48d26c01 IK |
691 | /* See if the timestamp is suffixed with UTC */ |
692 | utc = endswith_no_case(t, " UTC"); | |
693 | if (utc) | |
694 | t = strndupa(t, utc - t); | |
695 | else { | |
696 | const char *e = NULL; | |
697 | int j; | |
21b3a0fc | 698 | |
48d26c01 | 699 | tzset(); |
21b3a0fc | 700 | |
48d26c01 IK |
701 | /* See if the timestamp is suffixed by either the DST or non-DST local timezone. Note that we only |
702 | * support the local timezones here, nothing else. Not because we wouldn't want to, but simply because | |
703 | * there are no nice APIs available to cover this. By accepting the local time zone strings, we make | |
704 | * sure that all timestamps written by format_timestamp() can be parsed correctly, even though we don't | |
705 | * support arbitrary timezone specifications. */ | |
e4eaf99a | 706 | |
48d26c01 | 707 | for (j = 0; j <= 1; j++) { |
21b3a0fc | 708 | |
48d26c01 IK |
709 | if (isempty(tzname[j])) |
710 | continue; | |
21b3a0fc | 711 | |
48d26c01 IK |
712 | e = endswith_no_case(t, tzname[j]); |
713 | if (!e) | |
714 | continue; | |
715 | if (e == t) | |
716 | continue; | |
717 | if (e[-1] != ' ') | |
718 | continue; | |
21b3a0fc | 719 | |
48d26c01 IK |
720 | break; |
721 | } | |
21b3a0fc | 722 | |
48d26c01 IK |
723 | if (IN_SET(j, 0, 1)) { |
724 | /* Found one of the two timezones specified. */ | |
725 | t = strndupa(t, e - t - 1); | |
726 | dst = j; | |
727 | tzn = tzname[j]; | |
728 | } | |
21b3a0fc LP |
729 | } |
730 | } | |
731 | ||
732 | x = (time_t) (ret / USEC_PER_SEC); | |
e4eaf99a HV |
733 | x_usec = 0; |
734 | ||
21b3a0fc LP |
735 | if (!localtime_or_gmtime_r(&x, &tm, utc)) |
736 | return -EINVAL; | |
737 | ||
2e72b794 IK |
738 | tm.tm_isdst = dst; |
739 | if (!with_tz && tzn) | |
740 | tm.tm_zone = tzn; | |
e4eaf99a HV |
741 | |
742 | if (streq(t, "today")) { | |
743 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
744 | goto from_tm; | |
745 | ||
746 | } else if (streq(t, "yesterday")) { | |
313cefa1 | 747 | tm.tm_mday--; |
e4eaf99a HV |
748 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; |
749 | goto from_tm; | |
750 | ||
751 | } else if (streq(t, "tomorrow")) { | |
313cefa1 | 752 | tm.tm_mday++; |
e4eaf99a HV |
753 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; |
754 | goto from_tm; | |
755 | } | |
756 | ||
92134489 LP |
757 | for (i = 0; i < ELEMENTSOF(day_nr); i++) { |
758 | size_t skip; | |
759 | ||
760 | if (!startswith_no_case(t, day_nr[i].name)) | |
761 | continue; | |
762 | ||
763 | skip = strlen(day_nr[i].name); | |
764 | if (t[skip] != ' ') | |
765 | continue; | |
766 | ||
767 | weekday = day_nr[i].nr; | |
768 | t += skip + 1; | |
769 | break; | |
770 | } | |
771 | ||
9a98c7a1 LP |
772 | copy = tm; |
773 | k = strptime(t, "%y-%m-%d %H:%M:%S", &tm); | |
e4eaf99a HV |
774 | if (k) { |
775 | if (*k == '.') | |
776 | goto parse_usec; | |
777 | else if (*k == 0) | |
778 | goto from_tm; | |
779 | } | |
9a98c7a1 LP |
780 | |
781 | tm = copy; | |
782 | k = strptime(t, "%Y-%m-%d %H:%M:%S", &tm); | |
e4eaf99a HV |
783 | if (k) { |
784 | if (*k == '.') | |
785 | goto parse_usec; | |
786 | else if (*k == 0) | |
787 | goto from_tm; | |
788 | } | |
9a98c7a1 LP |
789 | |
790 | tm = copy; | |
791 | k = strptime(t, "%y-%m-%d %H:%M", &tm); | |
792 | if (k && *k == 0) { | |
793 | tm.tm_sec = 0; | |
e4eaf99a | 794 | goto from_tm; |
9a98c7a1 LP |
795 | } |
796 | ||
797 | tm = copy; | |
798 | k = strptime(t, "%Y-%m-%d %H:%M", &tm); | |
799 | if (k && *k == 0) { | |
800 | tm.tm_sec = 0; | |
e4eaf99a | 801 | goto from_tm; |
9a98c7a1 LP |
802 | } |
803 | ||
804 | tm = copy; | |
805 | k = strptime(t, "%y-%m-%d", &tm); | |
806 | if (k && *k == 0) { | |
807 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
e4eaf99a | 808 | goto from_tm; |
9a98c7a1 LP |
809 | } |
810 | ||
811 | tm = copy; | |
812 | k = strptime(t, "%Y-%m-%d", &tm); | |
813 | if (k && *k == 0) { | |
814 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
e4eaf99a | 815 | goto from_tm; |
9a98c7a1 LP |
816 | } |
817 | ||
818 | tm = copy; | |
819 | k = strptime(t, "%H:%M:%S", &tm); | |
e4eaf99a HV |
820 | if (k) { |
821 | if (*k == '.') | |
822 | goto parse_usec; | |
823 | else if (*k == 0) | |
824 | goto from_tm; | |
825 | } | |
9a98c7a1 LP |
826 | |
827 | tm = copy; | |
828 | k = strptime(t, "%H:%M", &tm); | |
829 | if (k && *k == 0) { | |
830 | tm.tm_sec = 0; | |
e4eaf99a | 831 | goto from_tm; |
9a98c7a1 LP |
832 | } |
833 | ||
834 | return -EINVAL; | |
835 | ||
e4eaf99a HV |
836 | parse_usec: |
837 | { | |
436dd70f | 838 | unsigned add; |
e4eaf99a HV |
839 | |
840 | k++; | |
436dd70f HV |
841 | r = parse_fractional_part_u(&k, 6, &add); |
842 | if (r < 0) | |
e4eaf99a HV |
843 | return -EINVAL; |
844 | ||
436dd70f | 845 | if (*k) |
e4eaf99a HV |
846 | return -EINVAL; |
847 | ||
436dd70f | 848 | x_usec = add; |
e4eaf99a HV |
849 | } |
850 | ||
851 | from_tm: | |
214cc95d | 852 | if (weekday >= 0 && tm.tm_wday != weekday) |
68bdd2d2 | 853 | return -EINVAL; |
9a98c7a1 | 854 | |
214cc95d MH |
855 | x = mktime_or_timegm(&tm, utc); |
856 | if (x < 0) | |
92134489 LP |
857 | return -EINVAL; |
858 | ||
68bdd2d2 | 859 | ret = (usec_t) x * USEC_PER_SEC + x_usec; |
1bb4b028 LP |
860 | if (ret > USEC_TIMESTAMP_FORMATTABLE_MAX) |
861 | return -EINVAL; | |
9a98c7a1 | 862 | |
e4eaf99a | 863 | finish: |
315782db | 864 | if (ret + plus < ret) /* overflow? */ |
68bdd2d2 | 865 | return -EINVAL; |
9a98c7a1 | 866 | ret += plus; |
1bb4b028 LP |
867 | if (ret > USEC_TIMESTAMP_FORMATTABLE_MAX) |
868 | return -EINVAL; | |
869 | ||
68bdd2d2 | 870 | if (ret >= minus) |
9a98c7a1 LP |
871 | ret -= minus; |
872 | else | |
68bdd2d2 | 873 | return -EINVAL; |
9a98c7a1 LP |
874 | |
875 | *usec = ret; | |
876 | ||
877 | return 0; | |
878 | } | |
879 | ||
48d26c01 IK |
880 | typedef struct ParseTimestampResult { |
881 | usec_t usec; | |
882 | int return_value; | |
883 | } ParseTimestampResult; | |
884 | ||
885 | int parse_timestamp(const char *t, usec_t *usec) { | |
ff69484a | 886 | char *last_space, *tz = NULL; |
48d26c01 IK |
887 | ParseTimestampResult *shared, tmp; |
888 | int r; | |
889 | pid_t pid; | |
890 | ||
891 | last_space = strrchr(t, ' '); | |
a2932a0d | 892 | if (last_space != NULL && timezone_is_valid(last_space + 1)) |
ff69484a | 893 | tz = last_space + 1; |
48d26c01 | 894 | |
ff69484a | 895 | if (tz == NULL || endswith_no_case(t, " UTC")) |
48d26c01 IK |
896 | return parse_timestamp_impl(t, usec, false); |
897 | ||
48d26c01 IK |
898 | shared = mmap(NULL, sizeof *shared, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANONYMOUS, -1, 0); |
899 | if (shared == MAP_FAILED) | |
900 | return negative_errno(); | |
901 | ||
902 | pid = fork(); | |
903 | ||
904 | if (pid == -1) { | |
905 | int fork_errno = errno; | |
906 | (void) munmap(shared, sizeof *shared); | |
907 | return -fork_errno; | |
908 | } | |
909 | ||
910 | if (pid == 0) { | |
3fd4929b MH |
911 | bool with_tz = true; |
912 | ||
ff69484a | 913 | if (setenv("TZ", tz, 1) != 0) { |
48d26c01 IK |
914 | shared->return_value = negative_errno(); |
915 | _exit(EXIT_FAILURE); | |
916 | } | |
917 | ||
918 | tzset(); | |
919 | ||
3fd4929b MH |
920 | /* If there is a timezone that matches the tzname fields, leave the parsing to the implementation. |
921 | * Otherwise just cut it off */ | |
922 | with_tz = !STR_IN_SET(tz, tzname[0], tzname[1]); | |
923 | ||
924 | /*cut off the timezone if we dont need it*/ | |
925 | if (with_tz) | |
926 | t = strndupa(t, last_space - t); | |
927 | ||
928 | shared->return_value = parse_timestamp_impl(t, &shared->usec, with_tz); | |
48d26c01 IK |
929 | |
930 | _exit(EXIT_SUCCESS); | |
931 | } | |
932 | ||
933 | r = wait_for_terminate(pid, NULL); | |
934 | if (r < 0) { | |
935 | (void) munmap(shared, sizeof *shared); | |
936 | return r; | |
937 | } | |
938 | ||
939 | tmp = *shared; | |
940 | if (munmap(shared, sizeof *shared) != 0) | |
941 | return negative_errno(); | |
942 | ||
943 | if (tmp.return_value == 0) | |
944 | *usec = tmp.usec; | |
945 | ||
946 | return tmp.return_value; | |
947 | } | |
948 | ||
240a7ba9 | 949 | static char* extract_multiplier(char *p, usec_t *multiplier) { |
9a98c7a1 LP |
950 | static const struct { |
951 | const char *suffix; | |
952 | usec_t usec; | |
953 | } table[] = { | |
eb55ec9f LP |
954 | { "seconds", USEC_PER_SEC }, |
955 | { "second", USEC_PER_SEC }, | |
956 | { "sec", USEC_PER_SEC }, | |
957 | { "s", USEC_PER_SEC }, | |
9a98c7a1 | 958 | { "minutes", USEC_PER_MINUTE }, |
eb55ec9f LP |
959 | { "minute", USEC_PER_MINUTE }, |
960 | { "min", USEC_PER_MINUTE }, | |
961 | { "months", USEC_PER_MONTH }, | |
962 | { "month", USEC_PER_MONTH }, | |
963 | { "M", USEC_PER_MONTH }, | |
964 | { "msec", USEC_PER_MSEC }, | |
965 | { "ms", USEC_PER_MSEC }, | |
966 | { "m", USEC_PER_MINUTE }, | |
967 | { "hours", USEC_PER_HOUR }, | |
968 | { "hour", USEC_PER_HOUR }, | |
969 | { "hr", USEC_PER_HOUR }, | |
970 | { "h", USEC_PER_HOUR }, | |
971 | { "days", USEC_PER_DAY }, | |
972 | { "day", USEC_PER_DAY }, | |
973 | { "d", USEC_PER_DAY }, | |
974 | { "weeks", USEC_PER_WEEK }, | |
975 | { "week", USEC_PER_WEEK }, | |
976 | { "w", USEC_PER_WEEK }, | |
977 | { "years", USEC_PER_YEAR }, | |
978 | { "year", USEC_PER_YEAR }, | |
979 | { "y", USEC_PER_YEAR }, | |
980 | { "usec", 1ULL }, | |
981 | { "us", 1ULL }, | |
5efdbf11 | 982 | { "µs", 1ULL }, |
9a98c7a1 | 983 | }; |
240a7ba9 ZJS |
984 | unsigned i; |
985 | ||
986 | for (i = 0; i < ELEMENTSOF(table); i++) { | |
987 | char *e; | |
988 | ||
989 | e = startswith(p, table[i].suffix); | |
990 | if (e) { | |
991 | *multiplier = table[i].usec; | |
992 | return e; | |
993 | } | |
994 | } | |
9a98c7a1 | 995 | |
240a7ba9 ZJS |
996 | return p; |
997 | } | |
998 | ||
999 | int parse_time(const char *t, usec_t *usec, usec_t default_unit) { | |
b1d6dcf5 | 1000 | const char *p, *s; |
9a98c7a1 | 1001 | usec_t r = 0; |
cb0dac05 | 1002 | bool something = false; |
9a98c7a1 LP |
1003 | |
1004 | assert(t); | |
1005 | assert(usec); | |
519cffec | 1006 | assert(default_unit > 0); |
9a98c7a1 LP |
1007 | |
1008 | p = t; | |
b1d6dcf5 ZJS |
1009 | |
1010 | p += strspn(p, WHITESPACE); | |
1011 | s = startswith(p, "infinity"); | |
1012 | if (s) { | |
1013 | s += strspn(s, WHITESPACE); | |
1014 | if (*s != 0) | |
1015 | return -EINVAL; | |
1016 | ||
1017 | *usec = USEC_INFINITY; | |
1018 | return 0; | |
1019 | } | |
1020 | ||
cb0dac05 LP |
1021 | for (;;) { |
1022 | long long l, z = 0; | |
9a98c7a1 | 1023 | char *e; |
240a7ba9 ZJS |
1024 | unsigned n = 0; |
1025 | usec_t multiplier = default_unit, k; | |
cb0dac05 LP |
1026 | |
1027 | p += strspn(p, WHITESPACE); | |
1028 | ||
1029 | if (*p == 0) { | |
1030 | if (!something) | |
1031 | return -EINVAL; | |
1032 | ||
1033 | break; | |
1034 | } | |
9a98c7a1 LP |
1035 | |
1036 | errno = 0; | |
1037 | l = strtoll(p, &e, 10); | |
8333c77e | 1038 | if (errno > 0) |
9a98c7a1 | 1039 | return -errno; |
9a98c7a1 LP |
1040 | if (l < 0) |
1041 | return -ERANGE; | |
1042 | ||
cb0dac05 LP |
1043 | if (*e == '.') { |
1044 | char *b = e + 1; | |
1045 | ||
1046 | errno = 0; | |
1047 | z = strtoll(b, &e, 10); | |
1048 | if (errno > 0) | |
1049 | return -errno; | |
1050 | ||
1051 | if (z < 0) | |
1052 | return -ERANGE; | |
1053 | ||
1054 | if (e == b) | |
1055 | return -EINVAL; | |
1056 | ||
1057 | n = e - b; | |
1058 | ||
1059 | } else if (e == p) | |
9a98c7a1 LP |
1060 | return -EINVAL; |
1061 | ||
1062 | e += strspn(e, WHITESPACE); | |
240a7ba9 | 1063 | p = extract_multiplier(e, &multiplier); |
9a98c7a1 | 1064 | |
519cffec LP |
1065 | something = true; |
1066 | ||
1067 | k = (usec_t) z * multiplier; | |
1068 | ||
1069 | for (; n > 0; n--) | |
1070 | k /= 10; | |
1071 | ||
1072 | r += (usec_t) l * multiplier + k; | |
cb0dac05 | 1073 | } |
9a98c7a1 LP |
1074 | |
1075 | *usec = r; | |
1076 | ||
1077 | return 0; | |
1078 | } | |
1079 | ||
519cffec LP |
1080 | int parse_sec(const char *t, usec_t *usec) { |
1081 | return parse_time(t, usec, USEC_PER_SEC); | |
1082 | } | |
1083 | ||
0004f698 ZJS |
1084 | int parse_sec_fix_0(const char *t, usec_t *usec) { |
1085 | t += strspn(t, WHITESPACE); | |
1086 | if (streq(t, "0")) { | |
1087 | *usec = USEC_INFINITY; | |
1088 | return 0; | |
1089 | } | |
1090 | ||
1091 | return parse_sec(t, usec); | |
1092 | } | |
1093 | ||
9a98c7a1 LP |
1094 | int parse_nsec(const char *t, nsec_t *nsec) { |
1095 | static const struct { | |
1096 | const char *suffix; | |
1097 | nsec_t nsec; | |
1098 | } table[] = { | |
1099 | { "seconds", NSEC_PER_SEC }, | |
1100 | { "second", NSEC_PER_SEC }, | |
1101 | { "sec", NSEC_PER_SEC }, | |
1102 | { "s", NSEC_PER_SEC }, | |
1103 | { "minutes", NSEC_PER_MINUTE }, | |
1104 | { "minute", NSEC_PER_MINUTE }, | |
1105 | { "min", NSEC_PER_MINUTE }, | |
1106 | { "months", NSEC_PER_MONTH }, | |
1107 | { "month", NSEC_PER_MONTH }, | |
1108 | { "msec", NSEC_PER_MSEC }, | |
1109 | { "ms", NSEC_PER_MSEC }, | |
1110 | { "m", NSEC_PER_MINUTE }, | |
1111 | { "hours", NSEC_PER_HOUR }, | |
1112 | { "hour", NSEC_PER_HOUR }, | |
1113 | { "hr", NSEC_PER_HOUR }, | |
1114 | { "h", NSEC_PER_HOUR }, | |
1115 | { "days", NSEC_PER_DAY }, | |
1116 | { "day", NSEC_PER_DAY }, | |
1117 | { "d", NSEC_PER_DAY }, | |
1118 | { "weeks", NSEC_PER_WEEK }, | |
1119 | { "week", NSEC_PER_WEEK }, | |
1120 | { "w", NSEC_PER_WEEK }, | |
1121 | { "years", NSEC_PER_YEAR }, | |
1122 | { "year", NSEC_PER_YEAR }, | |
1123 | { "y", NSEC_PER_YEAR }, | |
1124 | { "usec", NSEC_PER_USEC }, | |
1125 | { "us", NSEC_PER_USEC }, | |
5efdbf11 | 1126 | { "µs", NSEC_PER_USEC }, |
9a98c7a1 LP |
1127 | { "nsec", 1ULL }, |
1128 | { "ns", 1ULL }, | |
1129 | { "", 1ULL }, /* default is nsec */ | |
1130 | }; | |
1131 | ||
e73c78c2 | 1132 | const char *p, *s; |
9a98c7a1 | 1133 | nsec_t r = 0; |
cb0dac05 | 1134 | bool something = false; |
9a98c7a1 LP |
1135 | |
1136 | assert(t); | |
1137 | assert(nsec); | |
1138 | ||
1139 | p = t; | |
e73c78c2 LP |
1140 | |
1141 | p += strspn(p, WHITESPACE); | |
1142 | s = startswith(p, "infinity"); | |
1143 | if (s) { | |
1144 | s += strspn(s, WHITESPACE); | |
8e8933ca | 1145 | if (*s != 0) |
e73c78c2 LP |
1146 | return -EINVAL; |
1147 | ||
1148 | *nsec = NSEC_INFINITY; | |
1149 | return 0; | |
1150 | } | |
1151 | ||
cb0dac05 LP |
1152 | for (;;) { |
1153 | long long l, z = 0; | |
9a98c7a1 | 1154 | char *e; |
cb0dac05 LP |
1155 | unsigned i, n = 0; |
1156 | ||
1157 | p += strspn(p, WHITESPACE); | |
1158 | ||
1159 | if (*p == 0) { | |
1160 | if (!something) | |
1161 | return -EINVAL; | |
1162 | ||
1163 | break; | |
1164 | } | |
9a98c7a1 LP |
1165 | |
1166 | errno = 0; | |
1167 | l = strtoll(p, &e, 10); | |
1168 | ||
8333c77e | 1169 | if (errno > 0) |
9a98c7a1 LP |
1170 | return -errno; |
1171 | ||
1172 | if (l < 0) | |
1173 | return -ERANGE; | |
1174 | ||
cb0dac05 LP |
1175 | if (*e == '.') { |
1176 | char *b = e + 1; | |
1177 | ||
1178 | errno = 0; | |
1179 | z = strtoll(b, &e, 10); | |
1180 | if (errno > 0) | |
1181 | return -errno; | |
1182 | ||
1183 | if (z < 0) | |
1184 | return -ERANGE; | |
1185 | ||
1186 | if (e == b) | |
1187 | return -EINVAL; | |
1188 | ||
1189 | n = e - b; | |
1190 | ||
1191 | } else if (e == p) | |
9a98c7a1 LP |
1192 | return -EINVAL; |
1193 | ||
1194 | e += strspn(e, WHITESPACE); | |
1195 | ||
1196 | for (i = 0; i < ELEMENTSOF(table); i++) | |
1197 | if (startswith(e, table[i].suffix)) { | |
cb0dac05 LP |
1198 | nsec_t k = (nsec_t) z * table[i].nsec; |
1199 | ||
1200 | for (; n > 0; n--) | |
1201 | k /= 10; | |
1202 | ||
1203 | r += (nsec_t) l * table[i].nsec + k; | |
9a98c7a1 | 1204 | p = e + strlen(table[i].suffix); |
cb0dac05 LP |
1205 | |
1206 | something = true; | |
9a98c7a1 LP |
1207 | break; |
1208 | } | |
1209 | ||
1210 | if (i >= ELEMENTSOF(table)) | |
1211 | return -EINVAL; | |
1212 | ||
cb0dac05 | 1213 | } |
9a98c7a1 LP |
1214 | |
1215 | *nsec = r; | |
1216 | ||
1217 | return 0; | |
1218 | } | |
03cc26dd LP |
1219 | |
1220 | bool ntp_synced(void) { | |
1221 | struct timex txc = {}; | |
1222 | ||
1223 | if (adjtimex(&txc) < 0) | |
1224 | return false; | |
1225 | ||
1226 | if (txc.status & STA_UNSYNC) | |
1227 | return false; | |
1228 | ||
1229 | return true; | |
1230 | } | |
75683450 LP |
1231 | |
1232 | int get_timezones(char ***ret) { | |
1233 | _cleanup_fclose_ FILE *f = NULL; | |
1234 | _cleanup_strv_free_ char **zones = NULL; | |
1235 | size_t n_zones = 0, n_allocated = 0; | |
1236 | ||
1237 | assert(ret); | |
1238 | ||
1239 | zones = strv_new("UTC", NULL); | |
1240 | if (!zones) | |
1241 | return -ENOMEM; | |
1242 | ||
1243 | n_allocated = 2; | |
1244 | n_zones = 1; | |
1245 | ||
1246 | f = fopen("/usr/share/zoneinfo/zone.tab", "re"); | |
1247 | if (f) { | |
1248 | char l[LINE_MAX]; | |
1249 | ||
1250 | FOREACH_LINE(l, f, return -errno) { | |
1251 | char *p, *w; | |
1252 | size_t k; | |
1253 | ||
1254 | p = strstrip(l); | |
1255 | ||
1256 | if (isempty(p) || *p == '#') | |
1257 | continue; | |
1258 | ||
1259 | /* Skip over country code */ | |
1260 | p += strcspn(p, WHITESPACE); | |
1261 | p += strspn(p, WHITESPACE); | |
1262 | ||
1263 | /* Skip over coordinates */ | |
1264 | p += strcspn(p, WHITESPACE); | |
1265 | p += strspn(p, WHITESPACE); | |
1266 | ||
1267 | /* Found timezone name */ | |
1268 | k = strcspn(p, WHITESPACE); | |
1269 | if (k <= 0) | |
1270 | continue; | |
1271 | ||
1272 | w = strndup(p, k); | |
1273 | if (!w) | |
1274 | return -ENOMEM; | |
1275 | ||
1276 | if (!GREEDY_REALLOC(zones, n_allocated, n_zones + 2)) { | |
1277 | free(w); | |
1278 | return -ENOMEM; | |
1279 | } | |
1280 | ||
1281 | zones[n_zones++] = w; | |
1282 | zones[n_zones] = NULL; | |
1283 | } | |
1284 | ||
1285 | strv_sort(zones); | |
1286 | ||
1287 | } else if (errno != ENOENT) | |
1288 | return -errno; | |
1289 | ||
1290 | *ret = zones; | |
1291 | zones = NULL; | |
1292 | ||
1293 | return 0; | |
1294 | } | |
1295 | ||
1296 | bool timezone_is_valid(const char *name) { | |
1297 | bool slash = false; | |
1298 | const char *p, *t; | |
1299 | struct stat st; | |
1300 | ||
5c904ba5 LP |
1301 | if (isempty(name)) |
1302 | return false; | |
1303 | ||
1304 | if (name[0] == '/') | |
75683450 LP |
1305 | return false; |
1306 | ||
1307 | for (p = name; *p; p++) { | |
1308 | if (!(*p >= '0' && *p <= '9') && | |
1309 | !(*p >= 'a' && *p <= 'z') && | |
1310 | !(*p >= 'A' && *p <= 'Z') && | |
4c701096 | 1311 | !IN_SET(*p, '-', '_', '+', '/')) |
75683450 LP |
1312 | return false; |
1313 | ||
1314 | if (*p == '/') { | |
1315 | ||
1316 | if (slash) | |
1317 | return false; | |
1318 | ||
1319 | slash = true; | |
1320 | } else | |
1321 | slash = false; | |
1322 | } | |
1323 | ||
1324 | if (slash) | |
1325 | return false; | |
1326 | ||
63c372cb | 1327 | t = strjoina("/usr/share/zoneinfo/", name); |
75683450 LP |
1328 | if (stat(t, &st) < 0) |
1329 | return false; | |
1330 | ||
1331 | if (!S_ISREG(st.st_mode)) | |
1332 | return false; | |
1333 | ||
1334 | return true; | |
1335 | } | |
77ff2de9 | 1336 | |
3411372e LP |
1337 | bool clock_boottime_supported(void) { |
1338 | static int supported = -1; | |
1339 | ||
1340 | /* Note that this checks whether CLOCK_BOOTTIME is available in general as well as available for timerfds()! */ | |
1341 | ||
1342 | if (supported < 0) { | |
1343 | int fd; | |
1344 | ||
1345 | fd = timerfd_create(CLOCK_BOOTTIME, TFD_NONBLOCK|TFD_CLOEXEC); | |
1346 | if (fd < 0) | |
1347 | supported = false; | |
1348 | else { | |
1349 | safe_close(fd); | |
1350 | supported = true; | |
1351 | } | |
77ff2de9 TG |
1352 | } |
1353 | ||
3411372e LP |
1354 | return supported; |
1355 | } | |
1356 | ||
1357 | clockid_t clock_boottime_or_monotonic(void) { | |
1358 | if (clock_boottime_supported()) | |
1359 | return CLOCK_BOOTTIME; | |
1360 | else | |
1361 | return CLOCK_MONOTONIC; | |
77ff2de9 | 1362 | } |
5c904ba5 | 1363 | |
fe624c4c LP |
1364 | bool clock_supported(clockid_t clock) { |
1365 | struct timespec ts; | |
1366 | ||
1367 | switch (clock) { | |
1368 | ||
1369 | case CLOCK_MONOTONIC: | |
1370 | case CLOCK_REALTIME: | |
1371 | return true; | |
1372 | ||
1373 | case CLOCK_BOOTTIME: | |
1374 | return clock_boottime_supported(); | |
1375 | ||
1376 | case CLOCK_BOOTTIME_ALARM: | |
1377 | if (!clock_boottime_supported()) | |
1378 | return false; | |
1379 | ||
ec251fe7 | 1380 | /* fall through */ |
fe624c4c LP |
1381 | |
1382 | default: | |
1383 | /* For everything else, check properly */ | |
1384 | return clock_gettime(clock, &ts) >= 0; | |
1385 | } | |
1386 | } | |
1387 | ||
64d6c229 | 1388 | int get_timezone(char **tz) { |
5c904ba5 LP |
1389 | _cleanup_free_ char *t = NULL; |
1390 | const char *e; | |
1391 | char *z; | |
1392 | int r; | |
1393 | ||
1394 | r = readlink_malloc("/etc/localtime", &t); | |
1395 | if (r < 0) | |
1396 | return r; /* returns EINVAL if not a symlink */ | |
1397 | ||
1398 | e = path_startswith(t, "/usr/share/zoneinfo/"); | |
1399 | if (!e) | |
1400 | e = path_startswith(t, "../usr/share/zoneinfo/"); | |
1401 | if (!e) | |
1402 | return -EINVAL; | |
1403 | ||
1404 | if (!timezone_is_valid(e)) | |
1405 | return -EINVAL; | |
1406 | ||
1407 | z = strdup(e); | |
1408 | if (!z) | |
1409 | return -ENOMEM; | |
1410 | ||
64d6c229 | 1411 | *tz = z; |
5c904ba5 LP |
1412 | return 0; |
1413 | } | |
7c67c79c HV |
1414 | |
1415 | time_t mktime_or_timegm(struct tm *tm, bool utc) { | |
1416 | return utc ? timegm(tm) : mktime(tm); | |
1417 | } | |
1418 | ||
1419 | struct tm *localtime_or_gmtime_r(const time_t *t, struct tm *tm, bool utc) { | |
1420 | return utc ? gmtime_r(t, tm) : localtime_r(t, tm); | |
1421 | } | |
87b8ce69 SS |
1422 | |
1423 | unsigned long usec_to_jiffies(usec_t u) { | |
1424 | static thread_local unsigned long hz = 0; | |
1425 | long r; | |
1426 | ||
1427 | if (hz == 0) { | |
1428 | r = sysconf(_SC_CLK_TCK); | |
1429 | ||
1430 | assert(r > 0); | |
70887c5f | 1431 | hz = r; |
87b8ce69 SS |
1432 | } |
1433 | ||
1434 | return DIV_ROUND_UP(u , USEC_PER_SEC / hz); | |
1435 | } | |
1007ec60 LP |
1436 | |
1437 | usec_t usec_shift_clock(usec_t x, clockid_t from, clockid_t to) { | |
1438 | usec_t a, b; | |
1439 | ||
1440 | if (x == USEC_INFINITY) | |
1441 | return USEC_INFINITY; | |
1442 | if (map_clock_id(from) == map_clock_id(to)) | |
1443 | return x; | |
1444 | ||
1445 | a = now(from); | |
1446 | b = now(to); | |
1447 | ||
1448 | if (x > a) | |
1449 | /* x lies in the future */ | |
1450 | return usec_add(b, usec_sub_unsigned(x, a)); | |
1451 | else | |
1452 | /* x lies in the past */ | |
1453 | return usec_sub_unsigned(b, usec_sub_unsigned(a, x)); | |
1454 | } |