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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
9a98c7a1 | 2 | |
11c3a366 TA |
3 | #include <errno.h> |
4 | #include <limits.h> | |
5 | #include <stdlib.h> | |
9a98c7a1 | 6 | #include <string.h> |
48d26c01 | 7 | #include <sys/mman.h> |
11c3a366 TA |
8 | #include <sys/stat.h> |
9 | #include <sys/time.h> | |
77ff2de9 | 10 | #include <sys/timerfd.h> |
07630cea | 11 | #include <sys/timex.h> |
11c3a366 TA |
12 | #include <sys/types.h> |
13 | #include <unistd.h> | |
9a98c7a1 | 14 | |
b5efdb8a | 15 | #include "alloc-util.h" |
3ffd4af2 | 16 | #include "fd-util.h" |
0d39fa9c | 17 | #include "fileio.h" |
f4f15635 | 18 | #include "fs-util.h" |
a2932d51 | 19 | #include "io-util.h" |
11c3a366 TA |
20 | #include "log.h" |
21 | #include "macro.h" | |
93cc7779 TA |
22 | #include "parse-util.h" |
23 | #include "path-util.h" | |
dccca82b | 24 | #include "process-util.h" |
a2932d51 | 25 | #include "stat-util.h" |
07630cea | 26 | #include "string-util.h" |
75683450 | 27 | #include "strv.h" |
07630cea | 28 | #include "time-util.h" |
9a98c7a1 | 29 | |
32c1f5a5 LP |
30 | static clockid_t map_clock_id(clockid_t c) { |
31 | ||
32 | /* Some more exotic archs (s390, ppc, …) lack the "ALARM" flavour of the clocks. Thus, clock_gettime() will | |
33 | * fail for them. Since they are essentially the same as their non-ALARM pendants (their only difference is | |
34 | * when timers are set on them), let's just map them accordingly. This way, we can get the correct time even on | |
bdf19f8f | 35 | * those archs. */ |
32c1f5a5 LP |
36 | |
37 | switch (c) { | |
38 | ||
39 | case CLOCK_BOOTTIME_ALARM: | |
bdf19f8f | 40 | return CLOCK_BOOTTIME; |
32c1f5a5 LP |
41 | |
42 | case CLOCK_REALTIME_ALARM: | |
43 | return CLOCK_REALTIME; | |
44 | ||
45 | default: | |
46 | return c; | |
47 | } | |
48 | } | |
49 | ||
9a98c7a1 LP |
50 | usec_t now(clockid_t clock_id) { |
51 | struct timespec ts; | |
52 | ||
32c1f5a5 | 53 | assert_se(clock_gettime(map_clock_id(clock_id), &ts) == 0); |
9a98c7a1 LP |
54 | |
55 | return timespec_load(&ts); | |
56 | } | |
57 | ||
45d7a8bb LP |
58 | nsec_t now_nsec(clockid_t clock_id) { |
59 | struct timespec ts; | |
60 | ||
32c1f5a5 | 61 | assert_se(clock_gettime(map_clock_id(clock_id), &ts) == 0); |
45d7a8bb LP |
62 | |
63 | return timespec_load_nsec(&ts); | |
64 | } | |
65 | ||
9a98c7a1 LP |
66 | dual_timestamp* dual_timestamp_get(dual_timestamp *ts) { |
67 | assert(ts); | |
68 | ||
69 | ts->realtime = now(CLOCK_REALTIME); | |
70 | ts->monotonic = now(CLOCK_MONOTONIC); | |
71 | ||
72 | return ts; | |
73 | } | |
74 | ||
fe624c4c LP |
75 | triple_timestamp* triple_timestamp_get(triple_timestamp *ts) { |
76 | assert(ts); | |
77 | ||
78 | ts->realtime = now(CLOCK_REALTIME); | |
79 | ts->monotonic = now(CLOCK_MONOTONIC); | |
80 | ts->boottime = clock_boottime_supported() ? now(CLOCK_BOOTTIME) : USEC_INFINITY; | |
81 | ||
82 | return ts; | |
83 | } | |
84 | ||
9a98c7a1 LP |
85 | dual_timestamp* dual_timestamp_from_realtime(dual_timestamp *ts, usec_t u) { |
86 | int64_t delta; | |
87 | assert(ts); | |
88 | ||
75a5f1d8 LP |
89 | if (u == USEC_INFINITY || u <= 0) { |
90 | ts->realtime = ts->monotonic = u; | |
cae0c5e0 LP |
91 | return ts; |
92 | } | |
93 | ||
9a98c7a1 LP |
94 | ts->realtime = u; |
95 | ||
75a5f1d8 | 96 | delta = (int64_t) now(CLOCK_REALTIME) - (int64_t) u; |
54d8ef14 | 97 | ts->monotonic = usec_sub_signed(now(CLOCK_MONOTONIC), delta); |
9a98c7a1 LP |
98 | |
99 | return ts; | |
100 | } | |
101 | ||
fe624c4c LP |
102 | triple_timestamp* triple_timestamp_from_realtime(triple_timestamp *ts, usec_t u) { |
103 | int64_t delta; | |
104 | ||
105 | assert(ts); | |
106 | ||
107 | if (u == USEC_INFINITY || u <= 0) { | |
108 | ts->realtime = ts->monotonic = ts->boottime = u; | |
109 | return ts; | |
110 | } | |
111 | ||
112 | ts->realtime = u; | |
113 | delta = (int64_t) now(CLOCK_REALTIME) - (int64_t) u; | |
54d8ef14 LP |
114 | ts->monotonic = usec_sub_signed(now(CLOCK_MONOTONIC), delta); |
115 | ts->boottime = clock_boottime_supported() ? usec_sub_signed(now(CLOCK_BOOTTIME), delta) : USEC_INFINITY; | |
fe624c4c LP |
116 | |
117 | return ts; | |
118 | } | |
119 | ||
cae0c5e0 LP |
120 | dual_timestamp* dual_timestamp_from_monotonic(dual_timestamp *ts, usec_t u) { |
121 | int64_t delta; | |
122 | assert(ts); | |
123 | ||
3a43da28 KS |
124 | if (u == USEC_INFINITY) { |
125 | ts->realtime = ts->monotonic = USEC_INFINITY; | |
cae0c5e0 LP |
126 | return ts; |
127 | } | |
128 | ||
129 | ts->monotonic = u; | |
130 | delta = (int64_t) now(CLOCK_MONOTONIC) - (int64_t) u; | |
54d8ef14 | 131 | ts->realtime = usec_sub_signed(now(CLOCK_REALTIME), delta); |
cae0c5e0 LP |
132 | |
133 | return ts; | |
134 | } | |
135 | ||
fbe55073 LP |
136 | dual_timestamp* dual_timestamp_from_boottime_or_monotonic(dual_timestamp *ts, usec_t u) { |
137 | int64_t delta; | |
138 | ||
139 | if (u == USEC_INFINITY) { | |
140 | ts->realtime = ts->monotonic = USEC_INFINITY; | |
141 | return ts; | |
142 | } | |
fbe55073 | 143 | |
0345d252 | 144 | dual_timestamp_get(ts); |
fbe55073 | 145 | delta = (int64_t) now(clock_boottime_or_monotonic()) - (int64_t) u; |
54d8ef14 LP |
146 | ts->realtime = usec_sub_signed(ts->realtime, delta); |
147 | ts->monotonic = usec_sub_signed(ts->monotonic, delta); | |
fbe55073 LP |
148 | |
149 | return ts; | |
150 | } | |
151 | ||
fe624c4c LP |
152 | usec_t triple_timestamp_by_clock(triple_timestamp *ts, clockid_t clock) { |
153 | ||
154 | switch (clock) { | |
155 | ||
156 | case CLOCK_REALTIME: | |
157 | case CLOCK_REALTIME_ALARM: | |
158 | return ts->realtime; | |
159 | ||
160 | case CLOCK_MONOTONIC: | |
161 | return ts->monotonic; | |
162 | ||
163 | case CLOCK_BOOTTIME: | |
164 | case CLOCK_BOOTTIME_ALARM: | |
165 | return ts->boottime; | |
166 | ||
167 | default: | |
168 | return USEC_INFINITY; | |
169 | } | |
170 | } | |
171 | ||
9a98c7a1 LP |
172 | usec_t timespec_load(const struct timespec *ts) { |
173 | assert(ts); | |
174 | ||
c477ff14 | 175 | if (ts->tv_sec < 0 || ts->tv_nsec < 0) |
3a43da28 | 176 | return USEC_INFINITY; |
9a98c7a1 LP |
177 | |
178 | if ((usec_t) ts->tv_sec > (UINT64_MAX - (ts->tv_nsec / NSEC_PER_USEC)) / USEC_PER_SEC) | |
3a43da28 | 179 | return USEC_INFINITY; |
9a98c7a1 LP |
180 | |
181 | return | |
182 | (usec_t) ts->tv_sec * USEC_PER_SEC + | |
183 | (usec_t) ts->tv_nsec / NSEC_PER_USEC; | |
184 | } | |
185 | ||
3a730176 | 186 | nsec_t timespec_load_nsec(const struct timespec *ts) { |
45d7a8bb LP |
187 | assert(ts); |
188 | ||
c477ff14 | 189 | if (ts->tv_sec < 0 || ts->tv_nsec < 0) |
45d7a8bb LP |
190 | return NSEC_INFINITY; |
191 | ||
a2daa2f0 ZJS |
192 | if ((nsec_t) ts->tv_sec >= (UINT64_MAX - ts->tv_nsec) / NSEC_PER_SEC) |
193 | return NSEC_INFINITY; | |
194 | ||
195 | return (nsec_t) ts->tv_sec * NSEC_PER_SEC + (nsec_t) ts->tv_nsec; | |
45d7a8bb LP |
196 | } |
197 | ||
9a98c7a1 LP |
198 | struct timespec *timespec_store(struct timespec *ts, usec_t u) { |
199 | assert(ts); | |
200 | ||
f977849c | 201 | if (u == USEC_INFINITY || |
d201d908 | 202 | u / USEC_PER_SEC >= TIME_T_MAX) { |
9a98c7a1 LP |
203 | ts->tv_sec = (time_t) -1; |
204 | ts->tv_nsec = (long) -1; | |
205 | return ts; | |
206 | } | |
207 | ||
208 | ts->tv_sec = (time_t) (u / USEC_PER_SEC); | |
209 | ts->tv_nsec = (long int) ((u % USEC_PER_SEC) * NSEC_PER_USEC); | |
210 | ||
211 | return ts; | |
212 | } | |
213 | ||
214 | usec_t timeval_load(const struct timeval *tv) { | |
215 | assert(tv); | |
216 | ||
c477ff14 | 217 | if (tv->tv_sec < 0 || tv->tv_usec < 0) |
3a43da28 | 218 | return USEC_INFINITY; |
9a98c7a1 LP |
219 | |
220 | if ((usec_t) tv->tv_sec > (UINT64_MAX - tv->tv_usec) / USEC_PER_SEC) | |
3a43da28 | 221 | return USEC_INFINITY; |
9a98c7a1 LP |
222 | |
223 | return | |
224 | (usec_t) tv->tv_sec * USEC_PER_SEC + | |
225 | (usec_t) tv->tv_usec; | |
226 | } | |
227 | ||
228 | struct timeval *timeval_store(struct timeval *tv, usec_t u) { | |
229 | assert(tv); | |
230 | ||
68bdd2d2 | 231 | if (u == USEC_INFINITY || |
f977849c | 232 | u / USEC_PER_SEC > TIME_T_MAX) { |
9a98c7a1 LP |
233 | tv->tv_sec = (time_t) -1; |
234 | tv->tv_usec = (suseconds_t) -1; | |
4d89874a ZJS |
235 | } else { |
236 | tv->tv_sec = (time_t) (u / USEC_PER_SEC); | |
237 | tv->tv_usec = (suseconds_t) (u % USEC_PER_SEC); | |
9a98c7a1 LP |
238 | } |
239 | ||
9a98c7a1 LP |
240 | return tv; |
241 | } | |
242 | ||
21b3a0fc LP |
243 | static char *format_timestamp_internal( |
244 | char *buf, | |
245 | size_t l, | |
246 | usec_t t, | |
247 | bool utc, | |
248 | bool us) { | |
249 | ||
250 | /* The weekdays in non-localized (English) form. We use this instead of the localized form, so that our | |
251 | * generated timestamps may be parsed with parse_timestamp(), and always read the same. */ | |
252 | static const char * const weekdays[] = { | |
253 | [0] = "Sun", | |
254 | [1] = "Mon", | |
255 | [2] = "Tue", | |
256 | [3] = "Wed", | |
257 | [4] = "Thu", | |
258 | [5] = "Fri", | |
259 | [6] = "Sat", | |
260 | }; | |
261 | ||
9a98c7a1 LP |
262 | struct tm tm; |
263 | time_t sec; | |
21b3a0fc | 264 | size_t n; |
9a98c7a1 LP |
265 | |
266 | assert(buf); | |
9a98c7a1 | 267 | |
21b3a0fc LP |
268 | if (l < |
269 | 3 + /* week day */ | |
270 | 1 + 10 + /* space and date */ | |
271 | 1 + 8 + /* space and time */ | |
272 | (us ? 1 + 6 : 0) + /* "." and microsecond part */ | |
273 | 1 + 1 + /* space and shortest possible zone */ | |
274 | 1) | |
275 | return NULL; /* Not enough space even for the shortest form. */ | |
3a43da28 | 276 | if (t <= 0 || t == USEC_INFINITY) |
21b3a0fc LP |
277 | return NULL; /* Timestamp is unset */ |
278 | ||
1bb4b028 | 279 | /* Let's not format times with years > 9999 */ |
d3d28024 ZJS |
280 | if (t > USEC_TIMESTAMP_FORMATTABLE_MAX) { |
281 | assert(l >= strlen("--- XXXX-XX-XX XX:XX:XX") + 1); | |
282 | strcpy(buf, "--- XXXX-XX-XX XX:XX:XX"); | |
283 | return buf; | |
284 | } | |
1bb4b028 | 285 | |
21b3a0fc | 286 | sec = (time_t) (t / USEC_PER_SEC); /* Round down */ |
21b3a0fc LP |
287 | |
288 | if (!localtime_or_gmtime_r(&sec, &tm, utc)) | |
9a98c7a1 LP |
289 | return NULL; |
290 | ||
21b3a0fc LP |
291 | /* Start with the week day */ |
292 | assert((size_t) tm.tm_wday < ELEMENTSOF(weekdays)); | |
293 | memcpy(buf, weekdays[tm.tm_wday], 4); | |
9a98c7a1 | 294 | |
21b3a0fc LP |
295 | /* Add the main components */ |
296 | if (strftime(buf + 3, l - 3, " %Y-%m-%d %H:%M:%S", &tm) <= 0) | |
297 | return NULL; /* Doesn't fit */ | |
0056086a | 298 | |
21b3a0fc | 299 | /* Append the microseconds part, if that's requested */ |
0056086a | 300 | if (us) { |
21b3a0fc LP |
301 | n = strlen(buf); |
302 | if (n + 8 > l) | |
303 | return NULL; /* Microseconds part doesn't fit. */ | |
304 | ||
70887c5f | 305 | sprintf(buf + n, ".%06"PRI_USEC, t % USEC_PER_SEC); |
21b3a0fc LP |
306 | } |
307 | ||
308 | /* Append the timezone */ | |
309 | n = strlen(buf); | |
310 | if (utc) { | |
311 | /* If this is UTC then let's explicitly use the "UTC" string here, because gmtime_r() normally uses the | |
312 | * obsolete "GMT" instead. */ | |
313 | if (n + 5 > l) | |
314 | return NULL; /* "UTC" doesn't fit. */ | |
315 | ||
316 | strcpy(buf + n, " UTC"); | |
317 | ||
318 | } else if (!isempty(tm.tm_zone)) { | |
319 | size_t tn; | |
320 | ||
321 | /* An explicit timezone is specified, let's use it, if it fits */ | |
322 | tn = strlen(tm.tm_zone); | |
323 | if (n + 1 + tn + 1 > l) { | |
324 | /* The full time zone does not fit in. Yuck. */ | |
325 | ||
326 | if (n + 1 + _POSIX_TZNAME_MAX + 1 > l) | |
327 | return NULL; /* Not even enough space for the POSIX minimum (of 6)? In that case, complain that it doesn't fit */ | |
328 | ||
329 | /* So the time zone doesn't fit in fully, but the caller passed enough space for the POSIX | |
330 | * minimum time zone length. In this case suppress the timezone entirely, in order not to dump | |
331 | * an overly long, hard to read string on the user. This should be safe, because the user will | |
332 | * assume the local timezone anyway if none is shown. And so does parse_timestamp(). */ | |
333 | } else { | |
334 | buf[n++] = ' '; | |
335 | strcpy(buf + n, tm.tm_zone); | |
336 | } | |
0056086a | 337 | } |
9a98c7a1 LP |
338 | |
339 | return buf; | |
340 | } | |
341 | ||
a62e83b4 | 342 | char *format_timestamp(char *buf, size_t l, usec_t t) { |
0056086a | 343 | return format_timestamp_internal(buf, l, t, false, false); |
a62e83b4 JS |
344 | } |
345 | ||
5ab99e07 | 346 | char *format_timestamp_utc(char *buf, size_t l, usec_t t) { |
0056086a | 347 | return format_timestamp_internal(buf, l, t, true, false); |
f02d8367 ZJS |
348 | } |
349 | ||
5ab99e07 | 350 | char *format_timestamp_us(char *buf, size_t l, usec_t t) { |
0056086a | 351 | return format_timestamp_internal(buf, l, t, false, true); |
5ab99e07 LP |
352 | } |
353 | ||
354 | char *format_timestamp_us_utc(char *buf, size_t l, usec_t t) { | |
0056086a | 355 | return format_timestamp_internal(buf, l, t, true, true); |
5ab99e07 LP |
356 | } |
357 | ||
bbb8486e | 358 | char *format_timestamp_relative(char *buf, size_t l, usec_t t) { |
1fcf71f5 | 359 | const char *s; |
9a98c7a1 LP |
360 | usec_t n, d; |
361 | ||
65de0395 | 362 | if (t <= 0 || t == USEC_INFINITY) |
9a98c7a1 LP |
363 | return NULL; |
364 | ||
65de0395 | 365 | n = now(CLOCK_REALTIME); |
1fcf71f5 LP |
366 | if (n > t) { |
367 | d = n - t; | |
368 | s = "ago"; | |
369 | } else { | |
370 | d = t - n; | |
371 | s = "left"; | |
372 | } | |
9a98c7a1 LP |
373 | |
374 | if (d >= USEC_PER_YEAR) | |
609e002e | 375 | snprintf(buf, l, USEC_FMT " years " USEC_FMT " months %s", |
de0671ee ZJS |
376 | d / USEC_PER_YEAR, |
377 | (d % USEC_PER_YEAR) / USEC_PER_MONTH, s); | |
9a98c7a1 | 378 | else if (d >= USEC_PER_MONTH) |
609e002e | 379 | snprintf(buf, l, USEC_FMT " months " USEC_FMT " days %s", |
de0671ee ZJS |
380 | d / USEC_PER_MONTH, |
381 | (d % USEC_PER_MONTH) / USEC_PER_DAY, s); | |
9a98c7a1 | 382 | else if (d >= USEC_PER_WEEK) |
609e002e | 383 | snprintf(buf, l, USEC_FMT " weeks " USEC_FMT " days %s", |
de0671ee ZJS |
384 | d / USEC_PER_WEEK, |
385 | (d % USEC_PER_WEEK) / USEC_PER_DAY, s); | |
9a98c7a1 | 386 | else if (d >= 2*USEC_PER_DAY) |
609e002e | 387 | snprintf(buf, l, USEC_FMT " days %s", d / USEC_PER_DAY, s); |
9a98c7a1 | 388 | else if (d >= 25*USEC_PER_HOUR) |
609e002e | 389 | snprintf(buf, l, "1 day " USEC_FMT "h %s", |
de0671ee | 390 | (d - USEC_PER_DAY) / USEC_PER_HOUR, s); |
9a98c7a1 | 391 | else if (d >= 6*USEC_PER_HOUR) |
609e002e | 392 | snprintf(buf, l, USEC_FMT "h %s", |
de0671ee | 393 | d / USEC_PER_HOUR, s); |
9a98c7a1 | 394 | else if (d >= USEC_PER_HOUR) |
609e002e | 395 | snprintf(buf, l, USEC_FMT "h " USEC_FMT "min %s", |
de0671ee ZJS |
396 | d / USEC_PER_HOUR, |
397 | (d % USEC_PER_HOUR) / USEC_PER_MINUTE, s); | |
9a98c7a1 | 398 | else if (d >= 5*USEC_PER_MINUTE) |
609e002e | 399 | snprintf(buf, l, USEC_FMT "min %s", |
de0671ee | 400 | d / USEC_PER_MINUTE, s); |
9a98c7a1 | 401 | else if (d >= USEC_PER_MINUTE) |
609e002e | 402 | snprintf(buf, l, USEC_FMT "min " USEC_FMT "s %s", |
de0671ee ZJS |
403 | d / USEC_PER_MINUTE, |
404 | (d % USEC_PER_MINUTE) / USEC_PER_SEC, s); | |
9a98c7a1 | 405 | else if (d >= USEC_PER_SEC) |
609e002e | 406 | snprintf(buf, l, USEC_FMT "s %s", |
de0671ee | 407 | d / USEC_PER_SEC, s); |
9a98c7a1 | 408 | else if (d >= USEC_PER_MSEC) |
609e002e | 409 | snprintf(buf, l, USEC_FMT "ms %s", |
de0671ee | 410 | d / USEC_PER_MSEC, s); |
9a98c7a1 | 411 | else if (d > 0) |
de0671ee ZJS |
412 | snprintf(buf, l, USEC_FMT"us %s", |
413 | d, s); | |
9a98c7a1 LP |
414 | else |
415 | snprintf(buf, l, "now"); | |
416 | ||
417 | buf[l-1] = 0; | |
418 | return buf; | |
419 | } | |
420 | ||
2fa4092c | 421 | char *format_timespan(char *buf, size_t l, usec_t t, usec_t accuracy) { |
9a98c7a1 LP |
422 | static const struct { |
423 | const char *suffix; | |
424 | usec_t usec; | |
425 | } table[] = { | |
eb55ec9f LP |
426 | { "y", USEC_PER_YEAR }, |
427 | { "month", USEC_PER_MONTH }, | |
428 | { "w", USEC_PER_WEEK }, | |
429 | { "d", USEC_PER_DAY }, | |
430 | { "h", USEC_PER_HOUR }, | |
431 | { "min", USEC_PER_MINUTE }, | |
432 | { "s", USEC_PER_SEC }, | |
433 | { "ms", USEC_PER_MSEC }, | |
434 | { "us", 1 }, | |
9a98c7a1 LP |
435 | }; |
436 | ||
da6053d0 | 437 | size_t i; |
9a98c7a1 | 438 | char *p = buf; |
2fa4092c | 439 | bool something = false; |
9a98c7a1 LP |
440 | |
441 | assert(buf); | |
442 | assert(l > 0); | |
443 | ||
bb1fada8 LP |
444 | if (t == USEC_INFINITY) { |
445 | strncpy(p, "infinity", l-1); | |
446 | p[l-1] = 0; | |
447 | return p; | |
448 | } | |
449 | ||
450 | if (t <= 0) { | |
451 | strncpy(p, "0", l-1); | |
7c537b2e LP |
452 | p[l-1] = 0; |
453 | return p; | |
454 | } | |
455 | ||
7f602784 | 456 | /* The result of this function can be parsed with parse_sec */ |
9a98c7a1 LP |
457 | |
458 | for (i = 0; i < ELEMENTSOF(table); i++) { | |
7759ecb2 | 459 | int k = 0; |
9a98c7a1 | 460 | size_t n; |
2fa4092c LP |
461 | bool done = false; |
462 | usec_t a, b; | |
463 | ||
7c537b2e LP |
464 | if (t <= 0) |
465 | break; | |
2fa4092c | 466 | |
7c537b2e | 467 | if (t < accuracy && something) |
2fa4092c | 468 | break; |
9a98c7a1 LP |
469 | |
470 | if (t < table[i].usec) | |
471 | continue; | |
472 | ||
473 | if (l <= 1) | |
474 | break; | |
475 | ||
2fa4092c LP |
476 | a = t / table[i].usec; |
477 | b = t % table[i].usec; | |
478 | ||
479 | /* Let's see if we should shows this in dot notation */ | |
480 | if (t < USEC_PER_MINUTE && b > 0) { | |
481 | usec_t cc; | |
5fd8d5be | 482 | signed char j; |
2fa4092c LP |
483 | |
484 | j = 0; | |
485 | for (cc = table[i].usec; cc > 1; cc /= 10) | |
486 | j++; | |
487 | ||
488 | for (cc = accuracy; cc > 1; cc /= 10) { | |
489 | b /= 10; | |
490 | j--; | |
491 | } | |
492 | ||
493 | if (j > 0) { | |
494 | k = snprintf(p, l, | |
70887c5f | 495 | "%s"USEC_FMT".%0*"PRI_USEC"%s", |
2fa4092c | 496 | p > buf ? " " : "", |
de0671ee | 497 | a, |
2fa4092c | 498 | j, |
70887c5f | 499 | b, |
2fa4092c LP |
500 | table[i].suffix); |
501 | ||
502 | t = 0; | |
503 | done = true; | |
504 | } | |
505 | } | |
506 | ||
507 | /* No? Then let's show it normally */ | |
508 | if (!done) { | |
509 | k = snprintf(p, l, | |
de0671ee | 510 | "%s"USEC_FMT"%s", |
2fa4092c | 511 | p > buf ? " " : "", |
de0671ee | 512 | a, |
2fa4092c LP |
513 | table[i].suffix); |
514 | ||
515 | t = b; | |
516 | } | |
517 | ||
9a98c7a1 LP |
518 | n = MIN((size_t) k, l); |
519 | ||
520 | l -= n; | |
521 | p += n; | |
522 | ||
2fa4092c | 523 | something = true; |
9a98c7a1 LP |
524 | } |
525 | ||
526 | *p = 0; | |
527 | ||
528 | return buf; | |
529 | } | |
530 | ||
531 | void dual_timestamp_serialize(FILE *f, const char *name, dual_timestamp *t) { | |
532 | ||
533 | assert(f); | |
534 | assert(name); | |
535 | assert(t); | |
536 | ||
537 | if (!dual_timestamp_is_set(t)) | |
538 | return; | |
539 | ||
de0671ee | 540 | fprintf(f, "%s="USEC_FMT" "USEC_FMT"\n", |
9a98c7a1 | 541 | name, |
de0671ee ZJS |
542 | t->realtime, |
543 | t->monotonic); | |
9a98c7a1 LP |
544 | } |
545 | ||
e911de99 | 546 | int dual_timestamp_deserialize(const char *value, dual_timestamp *t) { |
74c5b33b | 547 | uint64_t a, b; |
9c0565b2 | 548 | int r, pos; |
9a98c7a1 LP |
549 | |
550 | assert(value); | |
551 | assert(t); | |
552 | ||
9c0565b2 ZJS |
553 | pos = strspn(value, WHITESPACE); |
554 | if (value[pos] == '-') | |
555 | return -EINVAL; | |
556 | pos += strspn(value + pos, DIGITS); | |
557 | pos += strspn(value + pos, WHITESPACE); | |
558 | if (value[pos] == '-') | |
559 | return -EINVAL; | |
560 | ||
561 | r = sscanf(value, "%" PRIu64 "%" PRIu64 "%n", &a, &b, &pos); | |
562 | if (r != 2) { | |
563 | log_debug("Failed to parse dual timestamp value \"%s\".", value); | |
e911de99 | 564 | return -EINVAL; |
9a98c7a1 | 565 | } |
e911de99 | 566 | |
9c0565b2 ZJS |
567 | if (value[pos] != '\0') |
568 | /* trailing garbage */ | |
569 | return -EINVAL; | |
570 | ||
e911de99 LP |
571 | t->realtime = a; |
572 | t->monotonic = b; | |
573 | ||
574 | return 0; | |
9a98c7a1 LP |
575 | } |
576 | ||
b895a735 | 577 | int timestamp_deserialize(const char *value, usec_t *timestamp) { |
ebf30a08 AK |
578 | int r; |
579 | ||
580 | assert(value); | |
581 | ||
582 | r = safe_atou64(value, timestamp); | |
ebf30a08 | 583 | if (r < 0) |
b895a735 | 584 | return log_debug_errno(r, "Failed to parse timestamp value \"%s\": %m", value); |
ebf30a08 AK |
585 | |
586 | return r; | |
587 | } | |
588 | ||
48d26c01 | 589 | static int parse_timestamp_impl(const char *t, usec_t *usec, bool with_tz) { |
92134489 LP |
590 | static const struct { |
591 | const char *name; | |
592 | const int nr; | |
593 | } day_nr[] = { | |
594 | { "Sunday", 0 }, | |
595 | { "Sun", 0 }, | |
596 | { "Monday", 1 }, | |
597 | { "Mon", 1 }, | |
598 | { "Tuesday", 2 }, | |
599 | { "Tue", 2 }, | |
600 | { "Wednesday", 3 }, | |
601 | { "Wed", 3 }, | |
602 | { "Thursday", 4 }, | |
603 | { "Thu", 4 }, | |
604 | { "Friday", 5 }, | |
605 | { "Fri", 5 }, | |
606 | { "Saturday", 6 }, | |
607 | { "Sat", 6 }, | |
608 | }; | |
609 | ||
48d26c01 | 610 | const char *k, *utc = NULL, *tzn = NULL; |
9a98c7a1 LP |
611 | struct tm tm, copy; |
612 | time_t x; | |
e4eaf99a | 613 | usec_t x_usec, plus = 0, minus = 0, ret; |
21b3a0fc | 614 | int r, weekday = -1, dst = -1; |
da6053d0 | 615 | size_t i; |
9a98c7a1 | 616 | |
947f9f01 | 617 | /* Allowed syntaxes: |
9a98c7a1 LP |
618 | * |
619 | * 2012-09-22 16:34:22 | |
620 | * 2012-09-22 16:34 (seconds will be set to 0) | |
621 | * 2012-09-22 (time will be set to 00:00:00) | |
622 | * 16:34:22 (date will be set to today) | |
623 | * 16:34 (date will be set to today, seconds to 0) | |
624 | * now | |
625 | * yesterday (time is set to 00:00:00) | |
626 | * today (time is set to 00:00:00) | |
627 | * tomorrow (time is set to 00:00:00) | |
628 | * +5min | |
629 | * -5days | |
5ba6e094 | 630 | * @2147483647 (seconds since epoch) |
9a98c7a1 LP |
631 | */ |
632 | ||
633 | assert(t); | |
634 | assert(usec); | |
635 | ||
48d26c01 | 636 | if (t[0] == '@' && !with_tz) |
e4eaf99a | 637 | return parse_sec(t + 1, usec); |
9a98c7a1 | 638 | |
e4eaf99a | 639 | ret = now(CLOCK_REALTIME); |
9a98c7a1 | 640 | |
48d26c01 IK |
641 | if (!with_tz) { |
642 | if (streq(t, "now")) | |
643 | goto finish; | |
9a98c7a1 | 644 | |
48d26c01 IK |
645 | else if (t[0] == '+') { |
646 | r = parse_sec(t+1, &plus); | |
647 | if (r < 0) | |
648 | return r; | |
9a98c7a1 | 649 | |
48d26c01 | 650 | goto finish; |
9a98c7a1 | 651 | |
48d26c01 IK |
652 | } else if (t[0] == '-') { |
653 | r = parse_sec(t+1, &minus); | |
654 | if (r < 0) | |
655 | return r; | |
9a98c7a1 | 656 | |
48d26c01 | 657 | goto finish; |
decad910 | 658 | |
48d26c01 IK |
659 | } else if ((k = endswith(t, " ago"))) { |
660 | t = strndupa(t, k - t); | |
decad910 | 661 | |
48d26c01 IK |
662 | r = parse_sec(t, &minus); |
663 | if (r < 0) | |
664 | return r; | |
decad910 | 665 | |
48d26c01 | 666 | goto finish; |
1fcf71f5 | 667 | |
48d26c01 IK |
668 | } else if ((k = endswith(t, " left"))) { |
669 | t = strndupa(t, k - t); | |
1fcf71f5 | 670 | |
48d26c01 IK |
671 | r = parse_sec(t, &plus); |
672 | if (r < 0) | |
673 | return r; | |
1fcf71f5 | 674 | |
48d26c01 IK |
675 | goto finish; |
676 | } | |
9a98c7a1 | 677 | |
48d26c01 IK |
678 | /* See if the timestamp is suffixed with UTC */ |
679 | utc = endswith_no_case(t, " UTC"); | |
680 | if (utc) | |
681 | t = strndupa(t, utc - t); | |
682 | else { | |
683 | const char *e = NULL; | |
684 | int j; | |
21b3a0fc | 685 | |
48d26c01 | 686 | tzset(); |
21b3a0fc | 687 | |
48d26c01 | 688 | /* See if the timestamp is suffixed by either the DST or non-DST local timezone. Note that we only |
947f9f01 YW |
689 | * support the local timezones here, nothing else. Not because we wouldn't want to, but simply because |
690 | * there are no nice APIs available to cover this. By accepting the local time zone strings, we make | |
691 | * sure that all timestamps written by format_timestamp() can be parsed correctly, even though we don't | |
692 | * support arbitrary timezone specifications. */ | |
e4eaf99a | 693 | |
48d26c01 | 694 | for (j = 0; j <= 1; j++) { |
21b3a0fc | 695 | |
48d26c01 IK |
696 | if (isempty(tzname[j])) |
697 | continue; | |
21b3a0fc | 698 | |
48d26c01 IK |
699 | e = endswith_no_case(t, tzname[j]); |
700 | if (!e) | |
701 | continue; | |
702 | if (e == t) | |
703 | continue; | |
704 | if (e[-1] != ' ') | |
705 | continue; | |
21b3a0fc | 706 | |
48d26c01 IK |
707 | break; |
708 | } | |
21b3a0fc | 709 | |
48d26c01 IK |
710 | if (IN_SET(j, 0, 1)) { |
711 | /* Found one of the two timezones specified. */ | |
712 | t = strndupa(t, e - t - 1); | |
713 | dst = j; | |
714 | tzn = tzname[j]; | |
715 | } | |
21b3a0fc LP |
716 | } |
717 | } | |
718 | ||
719 | x = (time_t) (ret / USEC_PER_SEC); | |
e4eaf99a HV |
720 | x_usec = 0; |
721 | ||
21b3a0fc LP |
722 | if (!localtime_or_gmtime_r(&x, &tm, utc)) |
723 | return -EINVAL; | |
724 | ||
2e72b794 IK |
725 | tm.tm_isdst = dst; |
726 | if (!with_tz && tzn) | |
727 | tm.tm_zone = tzn; | |
e4eaf99a HV |
728 | |
729 | if (streq(t, "today")) { | |
730 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
731 | goto from_tm; | |
732 | ||
733 | } else if (streq(t, "yesterday")) { | |
313cefa1 | 734 | tm.tm_mday--; |
e4eaf99a HV |
735 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; |
736 | goto from_tm; | |
737 | ||
738 | } else if (streq(t, "tomorrow")) { | |
313cefa1 | 739 | tm.tm_mday++; |
e4eaf99a HV |
740 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; |
741 | goto from_tm; | |
742 | } | |
743 | ||
92134489 LP |
744 | for (i = 0; i < ELEMENTSOF(day_nr); i++) { |
745 | size_t skip; | |
746 | ||
747 | if (!startswith_no_case(t, day_nr[i].name)) | |
748 | continue; | |
749 | ||
750 | skip = strlen(day_nr[i].name); | |
751 | if (t[skip] != ' ') | |
752 | continue; | |
753 | ||
754 | weekday = day_nr[i].nr; | |
755 | t += skip + 1; | |
756 | break; | |
757 | } | |
758 | ||
9a98c7a1 LP |
759 | copy = tm; |
760 | k = strptime(t, "%y-%m-%d %H:%M:%S", &tm); | |
e4eaf99a HV |
761 | if (k) { |
762 | if (*k == '.') | |
763 | goto parse_usec; | |
764 | else if (*k == 0) | |
765 | goto from_tm; | |
766 | } | |
9a98c7a1 LP |
767 | |
768 | tm = copy; | |
769 | k = strptime(t, "%Y-%m-%d %H:%M:%S", &tm); | |
e4eaf99a HV |
770 | if (k) { |
771 | if (*k == '.') | |
772 | goto parse_usec; | |
773 | else if (*k == 0) | |
774 | goto from_tm; | |
775 | } | |
9a98c7a1 LP |
776 | |
777 | tm = copy; | |
778 | k = strptime(t, "%y-%m-%d %H:%M", &tm); | |
779 | if (k && *k == 0) { | |
780 | tm.tm_sec = 0; | |
e4eaf99a | 781 | goto from_tm; |
9a98c7a1 LP |
782 | } |
783 | ||
784 | tm = copy; | |
785 | k = strptime(t, "%Y-%m-%d %H:%M", &tm); | |
786 | if (k && *k == 0) { | |
787 | tm.tm_sec = 0; | |
e4eaf99a | 788 | goto from_tm; |
9a98c7a1 LP |
789 | } |
790 | ||
791 | tm = copy; | |
792 | k = strptime(t, "%y-%m-%d", &tm); | |
793 | if (k && *k == 0) { | |
794 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
e4eaf99a | 795 | goto from_tm; |
9a98c7a1 LP |
796 | } |
797 | ||
798 | tm = copy; | |
799 | k = strptime(t, "%Y-%m-%d", &tm); | |
800 | if (k && *k == 0) { | |
801 | tm.tm_sec = tm.tm_min = tm.tm_hour = 0; | |
e4eaf99a | 802 | goto from_tm; |
9a98c7a1 LP |
803 | } |
804 | ||
805 | tm = copy; | |
806 | k = strptime(t, "%H:%M:%S", &tm); | |
e4eaf99a HV |
807 | if (k) { |
808 | if (*k == '.') | |
809 | goto parse_usec; | |
810 | else if (*k == 0) | |
811 | goto from_tm; | |
812 | } | |
9a98c7a1 LP |
813 | |
814 | tm = copy; | |
815 | k = strptime(t, "%H:%M", &tm); | |
816 | if (k && *k == 0) { | |
817 | tm.tm_sec = 0; | |
e4eaf99a | 818 | goto from_tm; |
9a98c7a1 LP |
819 | } |
820 | ||
821 | return -EINVAL; | |
822 | ||
e4eaf99a HV |
823 | parse_usec: |
824 | { | |
436dd70f | 825 | unsigned add; |
e4eaf99a HV |
826 | |
827 | k++; | |
436dd70f HV |
828 | r = parse_fractional_part_u(&k, 6, &add); |
829 | if (r < 0) | |
e4eaf99a HV |
830 | return -EINVAL; |
831 | ||
436dd70f | 832 | if (*k) |
e4eaf99a HV |
833 | return -EINVAL; |
834 | ||
436dd70f | 835 | x_usec = add; |
e4eaf99a HV |
836 | } |
837 | ||
838 | from_tm: | |
214cc95d | 839 | if (weekday >= 0 && tm.tm_wday != weekday) |
68bdd2d2 | 840 | return -EINVAL; |
9a98c7a1 | 841 | |
214cc95d MH |
842 | x = mktime_or_timegm(&tm, utc); |
843 | if (x < 0) | |
92134489 LP |
844 | return -EINVAL; |
845 | ||
68bdd2d2 | 846 | ret = (usec_t) x * USEC_PER_SEC + x_usec; |
1bb4b028 LP |
847 | if (ret > USEC_TIMESTAMP_FORMATTABLE_MAX) |
848 | return -EINVAL; | |
9a98c7a1 | 849 | |
e4eaf99a | 850 | finish: |
315782db | 851 | if (ret + plus < ret) /* overflow? */ |
68bdd2d2 | 852 | return -EINVAL; |
9a98c7a1 | 853 | ret += plus; |
1bb4b028 LP |
854 | if (ret > USEC_TIMESTAMP_FORMATTABLE_MAX) |
855 | return -EINVAL; | |
856 | ||
68bdd2d2 | 857 | if (ret >= minus) |
9a98c7a1 LP |
858 | ret -= minus; |
859 | else | |
68bdd2d2 | 860 | return -EINVAL; |
9a98c7a1 LP |
861 | |
862 | *usec = ret; | |
863 | ||
864 | return 0; | |
865 | } | |
866 | ||
48d26c01 IK |
867 | typedef struct ParseTimestampResult { |
868 | usec_t usec; | |
869 | int return_value; | |
870 | } ParseTimestampResult; | |
871 | ||
872 | int parse_timestamp(const char *t, usec_t *usec) { | |
ff69484a | 873 | char *last_space, *tz = NULL; |
48d26c01 | 874 | ParseTimestampResult *shared, tmp; |
4c253ed1 | 875 | int r; |
48d26c01 IK |
876 | |
877 | last_space = strrchr(t, ' '); | |
089fb865 | 878 | if (last_space != NULL && timezone_is_valid(last_space + 1, LOG_DEBUG)) |
ff69484a | 879 | tz = last_space + 1; |
48d26c01 | 880 | |
234519ae | 881 | if (!tz || endswith_no_case(t, " UTC")) |
48d26c01 IK |
882 | return parse_timestamp_impl(t, usec, false); |
883 | ||
48d26c01 IK |
884 | shared = mmap(NULL, sizeof *shared, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANONYMOUS, -1, 0); |
885 | if (shared == MAP_FAILED) | |
886 | return negative_errno(); | |
887 | ||
1f5d1e02 | 888 | r = safe_fork("(sd-timestamp)", FORK_RESET_SIGNALS|FORK_CLOSE_ALL_FDS|FORK_DEATHSIG|FORK_WAIT, NULL); |
4c253ed1 | 889 | if (r < 0) { |
48d26c01 | 890 | (void) munmap(shared, sizeof *shared); |
4c253ed1 | 891 | return r; |
48d26c01 | 892 | } |
4c253ed1 | 893 | if (r == 0) { |
3fd4929b MH |
894 | bool with_tz = true; |
895 | ||
ff69484a | 896 | if (setenv("TZ", tz, 1) != 0) { |
48d26c01 IK |
897 | shared->return_value = negative_errno(); |
898 | _exit(EXIT_FAILURE); | |
899 | } | |
900 | ||
901 | tzset(); | |
902 | ||
3fd4929b | 903 | /* If there is a timezone that matches the tzname fields, leave the parsing to the implementation. |
947f9f01 | 904 | * Otherwise just cut it off. */ |
3fd4929b MH |
905 | with_tz = !STR_IN_SET(tz, tzname[0], tzname[1]); |
906 | ||
947f9f01 | 907 | /* Cut off the timezone if we dont need it. */ |
3fd4929b MH |
908 | if (with_tz) |
909 | t = strndupa(t, last_space - t); | |
910 | ||
911 | shared->return_value = parse_timestamp_impl(t, &shared->usec, with_tz); | |
48d26c01 IK |
912 | |
913 | _exit(EXIT_SUCCESS); | |
914 | } | |
915 | ||
48d26c01 IK |
916 | tmp = *shared; |
917 | if (munmap(shared, sizeof *shared) != 0) | |
918 | return negative_errno(); | |
919 | ||
920 | if (tmp.return_value == 0) | |
921 | *usec = tmp.usec; | |
922 | ||
923 | return tmp.return_value; | |
924 | } | |
925 | ||
240a7ba9 | 926 | static char* extract_multiplier(char *p, usec_t *multiplier) { |
9a98c7a1 LP |
927 | static const struct { |
928 | const char *suffix; | |
929 | usec_t usec; | |
930 | } table[] = { | |
eb55ec9f LP |
931 | { "seconds", USEC_PER_SEC }, |
932 | { "second", USEC_PER_SEC }, | |
933 | { "sec", USEC_PER_SEC }, | |
934 | { "s", USEC_PER_SEC }, | |
9a98c7a1 | 935 | { "minutes", USEC_PER_MINUTE }, |
eb55ec9f LP |
936 | { "minute", USEC_PER_MINUTE }, |
937 | { "min", USEC_PER_MINUTE }, | |
938 | { "months", USEC_PER_MONTH }, | |
939 | { "month", USEC_PER_MONTH }, | |
940 | { "M", USEC_PER_MONTH }, | |
941 | { "msec", USEC_PER_MSEC }, | |
942 | { "ms", USEC_PER_MSEC }, | |
943 | { "m", USEC_PER_MINUTE }, | |
944 | { "hours", USEC_PER_HOUR }, | |
945 | { "hour", USEC_PER_HOUR }, | |
946 | { "hr", USEC_PER_HOUR }, | |
947 | { "h", USEC_PER_HOUR }, | |
948 | { "days", USEC_PER_DAY }, | |
949 | { "day", USEC_PER_DAY }, | |
950 | { "d", USEC_PER_DAY }, | |
951 | { "weeks", USEC_PER_WEEK }, | |
952 | { "week", USEC_PER_WEEK }, | |
953 | { "w", USEC_PER_WEEK }, | |
954 | { "years", USEC_PER_YEAR }, | |
955 | { "year", USEC_PER_YEAR }, | |
956 | { "y", USEC_PER_YEAR }, | |
957 | { "usec", 1ULL }, | |
958 | { "us", 1ULL }, | |
5efdbf11 | 959 | { "µs", 1ULL }, |
9a98c7a1 | 960 | }; |
da6053d0 | 961 | size_t i; |
240a7ba9 ZJS |
962 | |
963 | for (i = 0; i < ELEMENTSOF(table); i++) { | |
964 | char *e; | |
965 | ||
966 | e = startswith(p, table[i].suffix); | |
967 | if (e) { | |
968 | *multiplier = table[i].usec; | |
969 | return e; | |
970 | } | |
971 | } | |
9a98c7a1 | 972 | |
240a7ba9 ZJS |
973 | return p; |
974 | } | |
975 | ||
976 | int parse_time(const char *t, usec_t *usec, usec_t default_unit) { | |
b1d6dcf5 | 977 | const char *p, *s; |
9a98c7a1 | 978 | usec_t r = 0; |
cb0dac05 | 979 | bool something = false; |
9a98c7a1 LP |
980 | |
981 | assert(t); | |
982 | assert(usec); | |
519cffec | 983 | assert(default_unit > 0); |
9a98c7a1 LP |
984 | |
985 | p = t; | |
b1d6dcf5 ZJS |
986 | |
987 | p += strspn(p, WHITESPACE); | |
988 | s = startswith(p, "infinity"); | |
989 | if (s) { | |
990 | s += strspn(s, WHITESPACE); | |
991 | if (*s != 0) | |
992 | return -EINVAL; | |
993 | ||
994 | *usec = USEC_INFINITY; | |
995 | return 0; | |
996 | } | |
997 | ||
cb0dac05 LP |
998 | for (;;) { |
999 | long long l, z = 0; | |
9a98c7a1 | 1000 | char *e; |
240a7ba9 ZJS |
1001 | unsigned n = 0; |
1002 | usec_t multiplier = default_unit, k; | |
cb0dac05 LP |
1003 | |
1004 | p += strspn(p, WHITESPACE); | |
1005 | ||
1006 | if (*p == 0) { | |
1007 | if (!something) | |
1008 | return -EINVAL; | |
1009 | ||
1010 | break; | |
1011 | } | |
9a98c7a1 LP |
1012 | |
1013 | errno = 0; | |
1014 | l = strtoll(p, &e, 10); | |
8333c77e | 1015 | if (errno > 0) |
9a98c7a1 | 1016 | return -errno; |
9a98c7a1 LP |
1017 | if (l < 0) |
1018 | return -ERANGE; | |
1019 | ||
cb0dac05 LP |
1020 | if (*e == '.') { |
1021 | char *b = e + 1; | |
1022 | ||
1023 | errno = 0; | |
1024 | z = strtoll(b, &e, 10); | |
1025 | if (errno > 0) | |
1026 | return -errno; | |
1027 | ||
1028 | if (z < 0) | |
1029 | return -ERANGE; | |
1030 | ||
1031 | if (e == b) | |
1032 | return -EINVAL; | |
1033 | ||
1034 | n = e - b; | |
1035 | ||
1036 | } else if (e == p) | |
9a98c7a1 LP |
1037 | return -EINVAL; |
1038 | ||
1039 | e += strspn(e, WHITESPACE); | |
240a7ba9 | 1040 | p = extract_multiplier(e, &multiplier); |
9a98c7a1 | 1041 | |
519cffec LP |
1042 | something = true; |
1043 | ||
1044 | k = (usec_t) z * multiplier; | |
1045 | ||
1046 | for (; n > 0; n--) | |
1047 | k /= 10; | |
1048 | ||
1049 | r += (usec_t) l * multiplier + k; | |
cb0dac05 | 1050 | } |
9a98c7a1 LP |
1051 | |
1052 | *usec = r; | |
1053 | ||
1054 | return 0; | |
1055 | } | |
1056 | ||
519cffec LP |
1057 | int parse_sec(const char *t, usec_t *usec) { |
1058 | return parse_time(t, usec, USEC_PER_SEC); | |
1059 | } | |
1060 | ||
0004f698 | 1061 | int parse_sec_fix_0(const char *t, usec_t *usec) { |
eae51da3 LP |
1062 | assert(t); |
1063 | assert(usec); | |
1064 | ||
0004f698 | 1065 | t += strspn(t, WHITESPACE); |
eae51da3 | 1066 | |
0004f698 ZJS |
1067 | if (streq(t, "0")) { |
1068 | *usec = USEC_INFINITY; | |
1069 | return 0; | |
1070 | } | |
1071 | ||
1072 | return parse_sec(t, usec); | |
1073 | } | |
1074 | ||
9a98c7a1 LP |
1075 | int parse_nsec(const char *t, nsec_t *nsec) { |
1076 | static const struct { | |
1077 | const char *suffix; | |
1078 | nsec_t nsec; | |
1079 | } table[] = { | |
1080 | { "seconds", NSEC_PER_SEC }, | |
1081 | { "second", NSEC_PER_SEC }, | |
1082 | { "sec", NSEC_PER_SEC }, | |
1083 | { "s", NSEC_PER_SEC }, | |
1084 | { "minutes", NSEC_PER_MINUTE }, | |
1085 | { "minute", NSEC_PER_MINUTE }, | |
1086 | { "min", NSEC_PER_MINUTE }, | |
1087 | { "months", NSEC_PER_MONTH }, | |
1088 | { "month", NSEC_PER_MONTH }, | |
1089 | { "msec", NSEC_PER_MSEC }, | |
1090 | { "ms", NSEC_PER_MSEC }, | |
1091 | { "m", NSEC_PER_MINUTE }, | |
1092 | { "hours", NSEC_PER_HOUR }, | |
1093 | { "hour", NSEC_PER_HOUR }, | |
1094 | { "hr", NSEC_PER_HOUR }, | |
1095 | { "h", NSEC_PER_HOUR }, | |
1096 | { "days", NSEC_PER_DAY }, | |
1097 | { "day", NSEC_PER_DAY }, | |
1098 | { "d", NSEC_PER_DAY }, | |
1099 | { "weeks", NSEC_PER_WEEK }, | |
1100 | { "week", NSEC_PER_WEEK }, | |
1101 | { "w", NSEC_PER_WEEK }, | |
1102 | { "years", NSEC_PER_YEAR }, | |
1103 | { "year", NSEC_PER_YEAR }, | |
1104 | { "y", NSEC_PER_YEAR }, | |
1105 | { "usec", NSEC_PER_USEC }, | |
1106 | { "us", NSEC_PER_USEC }, | |
5efdbf11 | 1107 | { "µs", NSEC_PER_USEC }, |
9a98c7a1 LP |
1108 | { "nsec", 1ULL }, |
1109 | { "ns", 1ULL }, | |
1110 | { "", 1ULL }, /* default is nsec */ | |
1111 | }; | |
1112 | ||
e73c78c2 | 1113 | const char *p, *s; |
9a98c7a1 | 1114 | nsec_t r = 0; |
cb0dac05 | 1115 | bool something = false; |
9a98c7a1 LP |
1116 | |
1117 | assert(t); | |
1118 | assert(nsec); | |
1119 | ||
1120 | p = t; | |
e73c78c2 LP |
1121 | |
1122 | p += strspn(p, WHITESPACE); | |
1123 | s = startswith(p, "infinity"); | |
1124 | if (s) { | |
1125 | s += strspn(s, WHITESPACE); | |
8e8933ca | 1126 | if (*s != 0) |
e73c78c2 LP |
1127 | return -EINVAL; |
1128 | ||
1129 | *nsec = NSEC_INFINITY; | |
1130 | return 0; | |
1131 | } | |
1132 | ||
cb0dac05 LP |
1133 | for (;;) { |
1134 | long long l, z = 0; | |
da6053d0 | 1135 | size_t n = 0, i; |
9a98c7a1 | 1136 | char *e; |
cb0dac05 LP |
1137 | |
1138 | p += strspn(p, WHITESPACE); | |
1139 | ||
1140 | if (*p == 0) { | |
1141 | if (!something) | |
1142 | return -EINVAL; | |
1143 | ||
1144 | break; | |
1145 | } | |
9a98c7a1 LP |
1146 | |
1147 | errno = 0; | |
1148 | l = strtoll(p, &e, 10); | |
1149 | ||
8333c77e | 1150 | if (errno > 0) |
9a98c7a1 LP |
1151 | return -errno; |
1152 | ||
1153 | if (l < 0) | |
1154 | return -ERANGE; | |
1155 | ||
cb0dac05 LP |
1156 | if (*e == '.') { |
1157 | char *b = e + 1; | |
1158 | ||
1159 | errno = 0; | |
1160 | z = strtoll(b, &e, 10); | |
1161 | if (errno > 0) | |
1162 | return -errno; | |
1163 | ||
1164 | if (z < 0) | |
1165 | return -ERANGE; | |
1166 | ||
1167 | if (e == b) | |
1168 | return -EINVAL; | |
1169 | ||
1170 | n = e - b; | |
1171 | ||
1172 | } else if (e == p) | |
9a98c7a1 LP |
1173 | return -EINVAL; |
1174 | ||
1175 | e += strspn(e, WHITESPACE); | |
1176 | ||
1177 | for (i = 0; i < ELEMENTSOF(table); i++) | |
1178 | if (startswith(e, table[i].suffix)) { | |
cb0dac05 LP |
1179 | nsec_t k = (nsec_t) z * table[i].nsec; |
1180 | ||
1181 | for (; n > 0; n--) | |
1182 | k /= 10; | |
1183 | ||
1184 | r += (nsec_t) l * table[i].nsec + k; | |
9a98c7a1 | 1185 | p = e + strlen(table[i].suffix); |
cb0dac05 LP |
1186 | |
1187 | something = true; | |
9a98c7a1 LP |
1188 | break; |
1189 | } | |
1190 | ||
1191 | if (i >= ELEMENTSOF(table)) | |
1192 | return -EINVAL; | |
1193 | ||
cb0dac05 | 1194 | } |
9a98c7a1 LP |
1195 | |
1196 | *nsec = r; | |
1197 | ||
1198 | return 0; | |
1199 | } | |
03cc26dd LP |
1200 | |
1201 | bool ntp_synced(void) { | |
1202 | struct timex txc = {}; | |
1203 | ||
1204 | if (adjtimex(&txc) < 0) | |
1205 | return false; | |
1206 | ||
1207 | if (txc.status & STA_UNSYNC) | |
1208 | return false; | |
1209 | ||
1210 | return true; | |
1211 | } | |
75683450 LP |
1212 | |
1213 | int get_timezones(char ***ret) { | |
1214 | _cleanup_fclose_ FILE *f = NULL; | |
1215 | _cleanup_strv_free_ char **zones = NULL; | |
1216 | size_t n_zones = 0, n_allocated = 0; | |
1217 | ||
1218 | assert(ret); | |
1219 | ||
1220 | zones = strv_new("UTC", NULL); | |
1221 | if (!zones) | |
1222 | return -ENOMEM; | |
1223 | ||
1224 | n_allocated = 2; | |
1225 | n_zones = 1; | |
1226 | ||
1227 | f = fopen("/usr/share/zoneinfo/zone.tab", "re"); | |
1228 | if (f) { | |
1229 | char l[LINE_MAX]; | |
1230 | ||
1231 | FOREACH_LINE(l, f, return -errno) { | |
1232 | char *p, *w; | |
1233 | size_t k; | |
1234 | ||
1235 | p = strstrip(l); | |
1236 | ||
1237 | if (isempty(p) || *p == '#') | |
1238 | continue; | |
1239 | ||
1240 | /* Skip over country code */ | |
1241 | p += strcspn(p, WHITESPACE); | |
1242 | p += strspn(p, WHITESPACE); | |
1243 | ||
1244 | /* Skip over coordinates */ | |
1245 | p += strcspn(p, WHITESPACE); | |
1246 | p += strspn(p, WHITESPACE); | |
1247 | ||
1248 | /* Found timezone name */ | |
1249 | k = strcspn(p, WHITESPACE); | |
1250 | if (k <= 0) | |
1251 | continue; | |
1252 | ||
1253 | w = strndup(p, k); | |
1254 | if (!w) | |
1255 | return -ENOMEM; | |
1256 | ||
1257 | if (!GREEDY_REALLOC(zones, n_allocated, n_zones + 2)) { | |
1258 | free(w); | |
1259 | return -ENOMEM; | |
1260 | } | |
1261 | ||
1262 | zones[n_zones++] = w; | |
1263 | zones[n_zones] = NULL; | |
1264 | } | |
1265 | ||
1266 | strv_sort(zones); | |
1267 | ||
1268 | } else if (errno != ENOENT) | |
1269 | return -errno; | |
1270 | ||
1cc6c93a | 1271 | *ret = TAKE_PTR(zones); |
75683450 LP |
1272 | |
1273 | return 0; | |
1274 | } | |
1275 | ||
089fb865 | 1276 | bool timezone_is_valid(const char *name, int log_level) { |
75683450 LP |
1277 | bool slash = false; |
1278 | const char *p, *t; | |
a2932d51 MG |
1279 | _cleanup_close_ int fd = -1; |
1280 | char buf[4]; | |
1281 | int r; | |
75683450 | 1282 | |
5c904ba5 LP |
1283 | if (isempty(name)) |
1284 | return false; | |
1285 | ||
1286 | if (name[0] == '/') | |
75683450 LP |
1287 | return false; |
1288 | ||
1289 | for (p = name; *p; p++) { | |
1290 | if (!(*p >= '0' && *p <= '9') && | |
1291 | !(*p >= 'a' && *p <= 'z') && | |
1292 | !(*p >= 'A' && *p <= 'Z') && | |
4c701096 | 1293 | !IN_SET(*p, '-', '_', '+', '/')) |
75683450 LP |
1294 | return false; |
1295 | ||
1296 | if (*p == '/') { | |
1297 | ||
1298 | if (slash) | |
1299 | return false; | |
1300 | ||
1301 | slash = true; | |
1302 | } else | |
1303 | slash = false; | |
1304 | } | |
1305 | ||
1306 | if (slash) | |
1307 | return false; | |
1308 | ||
1c73b60b YW |
1309 | if (p - name >= PATH_MAX) |
1310 | return false; | |
1311 | ||
63c372cb | 1312 | t = strjoina("/usr/share/zoneinfo/", name); |
a2932d51 MG |
1313 | |
1314 | fd = open(t, O_RDONLY|O_CLOEXEC); | |
1315 | if (fd < 0) { | |
089fb865 | 1316 | log_full_errno(log_level, errno, "Failed to open timezone file '%s': %m", t); |
a2932d51 MG |
1317 | return false; |
1318 | } | |
1319 | ||
1320 | r = fd_verify_regular(fd); | |
1321 | if (r < 0) { | |
089fb865 | 1322 | log_full_errno(log_level, r, "Timezone file '%s' is not a regular file: %m", t); |
75683450 | 1323 | return false; |
a2932d51 MG |
1324 | } |
1325 | ||
1326 | r = loop_read_exact(fd, buf, 4, false); | |
1327 | if (r < 0) { | |
089fb865 | 1328 | log_full_errno(log_level, r, "Failed to read from timezone file '%s': %m", t); |
a2932d51 MG |
1329 | return false; |
1330 | } | |
75683450 | 1331 | |
a2932d51 MG |
1332 | /* Magic from tzfile(5) */ |
1333 | if (memcmp(buf, "TZif", 4) != 0) { | |
089fb865 | 1334 | log_full(log_level, "Timezone file '%s' has wrong magic bytes", t); |
75683450 | 1335 | return false; |
a2932d51 | 1336 | } |
75683450 LP |
1337 | |
1338 | return true; | |
1339 | } | |
77ff2de9 | 1340 | |
3411372e LP |
1341 | bool clock_boottime_supported(void) { |
1342 | static int supported = -1; | |
1343 | ||
1344 | /* Note that this checks whether CLOCK_BOOTTIME is available in general as well as available for timerfds()! */ | |
1345 | ||
1346 | if (supported < 0) { | |
1347 | int fd; | |
1348 | ||
1349 | fd = timerfd_create(CLOCK_BOOTTIME, TFD_NONBLOCK|TFD_CLOEXEC); | |
1350 | if (fd < 0) | |
1351 | supported = false; | |
1352 | else { | |
1353 | safe_close(fd); | |
1354 | supported = true; | |
1355 | } | |
77ff2de9 TG |
1356 | } |
1357 | ||
3411372e LP |
1358 | return supported; |
1359 | } | |
1360 | ||
1361 | clockid_t clock_boottime_or_monotonic(void) { | |
1362 | if (clock_boottime_supported()) | |
1363 | return CLOCK_BOOTTIME; | |
1364 | else | |
1365 | return CLOCK_MONOTONIC; | |
77ff2de9 | 1366 | } |
5c904ba5 | 1367 | |
fe624c4c LP |
1368 | bool clock_supported(clockid_t clock) { |
1369 | struct timespec ts; | |
1370 | ||
1371 | switch (clock) { | |
1372 | ||
1373 | case CLOCK_MONOTONIC: | |
1374 | case CLOCK_REALTIME: | |
1375 | return true; | |
1376 | ||
1377 | case CLOCK_BOOTTIME: | |
1378 | return clock_boottime_supported(); | |
1379 | ||
1380 | case CLOCK_BOOTTIME_ALARM: | |
1381 | if (!clock_boottime_supported()) | |
1382 | return false; | |
1383 | ||
4831981d | 1384 | _fallthrough_; |
fe624c4c LP |
1385 | default: |
1386 | /* For everything else, check properly */ | |
1387 | return clock_gettime(clock, &ts) >= 0; | |
1388 | } | |
1389 | } | |
1390 | ||
64d6c229 | 1391 | int get_timezone(char **tz) { |
5c904ba5 LP |
1392 | _cleanup_free_ char *t = NULL; |
1393 | const char *e; | |
1394 | char *z; | |
1395 | int r; | |
1396 | ||
1397 | r = readlink_malloc("/etc/localtime", &t); | |
1398 | if (r < 0) | |
1399 | return r; /* returns EINVAL if not a symlink */ | |
1400 | ||
1401 | e = path_startswith(t, "/usr/share/zoneinfo/"); | |
1402 | if (!e) | |
1403 | e = path_startswith(t, "../usr/share/zoneinfo/"); | |
1404 | if (!e) | |
1405 | return -EINVAL; | |
1406 | ||
089fb865 | 1407 | if (!timezone_is_valid(e, LOG_DEBUG)) |
5c904ba5 LP |
1408 | return -EINVAL; |
1409 | ||
1410 | z = strdup(e); | |
1411 | if (!z) | |
1412 | return -ENOMEM; | |
1413 | ||
64d6c229 | 1414 | *tz = z; |
5c904ba5 LP |
1415 | return 0; |
1416 | } | |
7c67c79c HV |
1417 | |
1418 | time_t mktime_or_timegm(struct tm *tm, bool utc) { | |
1419 | return utc ? timegm(tm) : mktime(tm); | |
1420 | } | |
1421 | ||
1422 | struct tm *localtime_or_gmtime_r(const time_t *t, struct tm *tm, bool utc) { | |
1423 | return utc ? gmtime_r(t, tm) : localtime_r(t, tm); | |
1424 | } | |
87b8ce69 SS |
1425 | |
1426 | unsigned long usec_to_jiffies(usec_t u) { | |
1427 | static thread_local unsigned long hz = 0; | |
1428 | long r; | |
1429 | ||
1430 | if (hz == 0) { | |
1431 | r = sysconf(_SC_CLK_TCK); | |
1432 | ||
1433 | assert(r > 0); | |
70887c5f | 1434 | hz = r; |
87b8ce69 SS |
1435 | } |
1436 | ||
1437 | return DIV_ROUND_UP(u , USEC_PER_SEC / hz); | |
1438 | } | |
1007ec60 LP |
1439 | |
1440 | usec_t usec_shift_clock(usec_t x, clockid_t from, clockid_t to) { | |
1441 | usec_t a, b; | |
1442 | ||
1443 | if (x == USEC_INFINITY) | |
1444 | return USEC_INFINITY; | |
1445 | if (map_clock_id(from) == map_clock_id(to)) | |
1446 | return x; | |
1447 | ||
1448 | a = now(from); | |
1449 | b = now(to); | |
1450 | ||
1451 | if (x > a) | |
1452 | /* x lies in the future */ | |
1453 | return usec_add(b, usec_sub_unsigned(x, a)); | |
1454 | else | |
1455 | /* x lies in the past */ | |
1456 | return usec_sub_unsigned(b, usec_sub_unsigned(a, x)); | |
1457 | } | |
9a9a4f10 LP |
1458 | |
1459 | bool in_utc_timezone(void) { | |
1460 | tzset(); | |
1461 | ||
1462 | return timezone == 0 && daylight == 0; | |
1463 | } | |
4f811d27 LP |
1464 | |
1465 | int time_change_fd(void) { | |
1466 | ||
1467 | /* We only care for the cancellation event, hence we set the timeout to the latest possible value. */ | |
1468 | static const struct itimerspec its = { | |
1469 | .it_value.tv_sec = TIME_T_MAX, | |
1470 | }; | |
1471 | ||
1472 | _cleanup_close_ int fd; | |
1473 | ||
1474 | assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX)); | |
1475 | ||
1476 | /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever CLOCK_REALTIME makes a jump relative to | |
1477 | * CLOCK_MONOTONIC. */ | |
1478 | ||
1479 | fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC); | |
1480 | if (fd < 0) | |
1481 | return -errno; | |
1482 | ||
1483 | if (timerfd_settime(fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) | |
1484 | return -errno; | |
1485 | ||
1486 | return TAKE_FD(fd); | |
1487 | } |