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a5c32cff HH |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
11c3a366 TA |
22 | #include <errno.h> |
23 | #include <fcntl.h> | |
24 | #include <limits.h> | |
25 | #include <stdarg.h> | |
26 | #include <stdint.h> | |
27 | #include <stdlib.h> | |
28 | #include <string.h> | |
29 | #include <sys/stat.h> | |
30 | #include <sys/types.h> | |
a5c32cff | 31 | #include <unistd.h> |
cda134ab | 32 | |
b5efdb8a | 33 | #include "alloc-util.h" |
4f5dd394 LP |
34 | #include "ctype.h" |
35 | #include "escape.h" | |
3ffd4af2 LP |
36 | #include "fd-util.h" |
37 | #include "fileio.h" | |
f4f15635 | 38 | #include "fs-util.h" |
0d39fa9c | 39 | #include "hexdecoct.h" |
93cc7779 TA |
40 | #include "log.h" |
41 | #include "macro.h" | |
33d52ab9 | 42 | #include "parse-util.h" |
0d39fa9c LP |
43 | #include "path-util.h" |
44 | #include "random-util.h" | |
33d52ab9 | 45 | #include "stdio-util.h" |
07630cea | 46 | #include "string-util.h" |
a5c32cff | 47 | #include "strv.h" |
93cc7779 | 48 | #include "time-util.h" |
affb60b1 | 49 | #include "umask-util.h" |
335c46b5 | 50 | #include "utf8.h" |
a5c32cff | 51 | |
40beecdb | 52 | int write_string_stream(FILE *f, const char *line, bool enforce_newline) { |
dacd6cee | 53 | |
717603e3 LP |
54 | assert(f); |
55 | assert(line); | |
56 | ||
fec6fc6b | 57 | fputs(line, f); |
40beecdb | 58 | if (enforce_newline && !endswith(line, "\n")) |
a5c32cff HH |
59 | fputc('\n', f); |
60 | ||
dacd6cee | 61 | return fflush_and_check(f); |
a5c32cff HH |
62 | } |
63 | ||
4c1fc3e4 | 64 | static int write_string_file_atomic(const char *fn, const char *line, bool enforce_newline) { |
a5c32cff HH |
65 | _cleanup_fclose_ FILE *f = NULL; |
66 | _cleanup_free_ char *p = NULL; | |
67 | int r; | |
68 | ||
69 | assert(fn); | |
70 | assert(line); | |
71 | ||
72 | r = fopen_temporary(fn, &f, &p); | |
73 | if (r < 0) | |
74 | return r; | |
75 | ||
0d39fa9c | 76 | (void) fchmod_umask(fileno(f), 0644); |
a5c32cff | 77 | |
4c1fc3e4 | 78 | r = write_string_stream(f, line, enforce_newline); |
f2997962 | 79 | if (r >= 0) { |
a5c32cff HH |
80 | if (rename(p, fn) < 0) |
81 | r = -errno; | |
a5c32cff HH |
82 | } |
83 | ||
a5c32cff | 84 | if (r < 0) |
0d39fa9c | 85 | (void) unlink(p); |
a5c32cff HH |
86 | |
87 | return r; | |
88 | } | |
89 | ||
4c1fc3e4 DM |
90 | int write_string_file(const char *fn, const char *line, WriteStringFileFlags flags) { |
91 | _cleanup_fclose_ FILE *f = NULL; | |
eb3da901 | 92 | int q, r; |
4c1fc3e4 DM |
93 | |
94 | assert(fn); | |
95 | assert(line); | |
96 | ||
97 | if (flags & WRITE_STRING_FILE_ATOMIC) { | |
98 | assert(flags & WRITE_STRING_FILE_CREATE); | |
99 | ||
eb3da901 LP |
100 | r = write_string_file_atomic(fn, line, !(flags & WRITE_STRING_FILE_AVOID_NEWLINE)); |
101 | if (r < 0) | |
102 | goto fail; | |
103 | ||
104 | return r; | |
4c1fc3e4 DM |
105 | } |
106 | ||
107 | if (flags & WRITE_STRING_FILE_CREATE) { | |
108 | f = fopen(fn, "we"); | |
eb3da901 LP |
109 | if (!f) { |
110 | r = -errno; | |
111 | goto fail; | |
112 | } | |
4c1fc3e4 DM |
113 | } else { |
114 | int fd; | |
115 | ||
116 | /* We manually build our own version of fopen(..., "we") that | |
117 | * works without O_CREAT */ | |
118 | fd = open(fn, O_WRONLY|O_CLOEXEC|O_NOCTTY); | |
eb3da901 LP |
119 | if (fd < 0) { |
120 | r = -errno; | |
121 | goto fail; | |
122 | } | |
4c1fc3e4 DM |
123 | |
124 | f = fdopen(fd, "we"); | |
125 | if (!f) { | |
eb3da901 | 126 | r = -errno; |
4c1fc3e4 | 127 | safe_close(fd); |
eb3da901 | 128 | goto fail; |
4c1fc3e4 DM |
129 | } |
130 | } | |
131 | ||
eb3da901 LP |
132 | r = write_string_stream(f, line, !(flags & WRITE_STRING_FILE_AVOID_NEWLINE)); |
133 | if (r < 0) | |
134 | goto fail; | |
135 | ||
136 | return 0; | |
137 | ||
138 | fail: | |
139 | if (!(flags & WRITE_STRING_FILE_VERIFY_ON_FAILURE)) | |
140 | return r; | |
141 | ||
142 | f = safe_fclose(f); | |
143 | ||
144 | /* OK, the operation failed, but let's see if the right | |
145 | * contents in place already. If so, eat up the error. */ | |
146 | ||
147 | q = verify_file(fn, line, !(flags & WRITE_STRING_FILE_AVOID_NEWLINE)); | |
148 | if (q <= 0) | |
149 | return r; | |
150 | ||
151 | return 0; | |
4c1fc3e4 DM |
152 | } |
153 | ||
a5c32cff HH |
154 | int read_one_line_file(const char *fn, char **line) { |
155 | _cleanup_fclose_ FILE *f = NULL; | |
156 | char t[LINE_MAX], *c; | |
157 | ||
158 | assert(fn); | |
159 | assert(line); | |
160 | ||
161 | f = fopen(fn, "re"); | |
162 | if (!f) | |
163 | return -errno; | |
164 | ||
165 | if (!fgets(t, sizeof(t), f)) { | |
166 | ||
167 | if (ferror(f)) | |
f5e5c28f | 168 | return errno > 0 ? -errno : -EIO; |
a5c32cff HH |
169 | |
170 | t[0] = 0; | |
171 | } | |
172 | ||
173 | c = strdup(t); | |
174 | if (!c) | |
175 | return -ENOMEM; | |
176 | truncate_nl(c); | |
177 | ||
178 | *line = c; | |
179 | return 0; | |
180 | } | |
181 | ||
eb3da901 LP |
182 | int verify_file(const char *fn, const char *blob, bool accept_extra_nl) { |
183 | _cleanup_fclose_ FILE *f = NULL; | |
184 | _cleanup_free_ char *buf = NULL; | |
185 | size_t l, k; | |
15dee3f0 | 186 | |
eb3da901 LP |
187 | assert(fn); |
188 | assert(blob); | |
189 | ||
190 | l = strlen(blob); | |
191 | ||
192 | if (accept_extra_nl && endswith(blob, "\n")) | |
193 | accept_extra_nl = false; | |
194 | ||
195 | buf = malloc(l + accept_extra_nl + 1); | |
196 | if (!buf) | |
197 | return -ENOMEM; | |
198 | ||
199 | f = fopen(fn, "re"); | |
200 | if (!f) | |
201 | return -errno; | |
202 | ||
203 | /* We try to read one byte more than we need, so that we know whether we hit eof */ | |
204 | errno = 0; | |
205 | k = fread(buf, 1, l + accept_extra_nl + 1, f); | |
206 | if (ferror(f)) | |
207 | return errno > 0 ? -errno : -EIO; | |
208 | ||
209 | if (k != l && k != l + accept_extra_nl) | |
210 | return 0; | |
211 | if (memcmp(buf, blob, l) != 0) | |
212 | return 0; | |
213 | if (k > l && buf[l] != '\n') | |
214 | return 0; | |
15dee3f0 | 215 | |
eb3da901 | 216 | return 1; |
15dee3f0 LP |
217 | } |
218 | ||
717603e3 | 219 | int read_full_stream(FILE *f, char **contents, size_t *size) { |
a5c32cff HH |
220 | size_t n, l; |
221 | _cleanup_free_ char *buf = NULL; | |
222 | struct stat st; | |
223 | ||
717603e3 | 224 | assert(f); |
a5c32cff HH |
225 | assert(contents); |
226 | ||
a5c32cff HH |
227 | if (fstat(fileno(f), &st) < 0) |
228 | return -errno; | |
229 | ||
717603e3 | 230 | n = LINE_MAX; |
a5c32cff | 231 | |
717603e3 LP |
232 | if (S_ISREG(st.st_mode)) { |
233 | ||
234 | /* Safety check */ | |
235 | if (st.st_size > 4*1024*1024) | |
236 | return -E2BIG; | |
237 | ||
238 | /* Start with the right file size, but be prepared for | |
239 | * files from /proc which generally report a file size | |
240 | * of 0 */ | |
241 | if (st.st_size > 0) | |
242 | n = st.st_size; | |
243 | } | |
a5c32cff | 244 | |
717603e3 | 245 | l = 0; |
a5c32cff HH |
246 | for (;;) { |
247 | char *t; | |
248 | size_t k; | |
249 | ||
250 | t = realloc(buf, n+1); | |
251 | if (!t) | |
252 | return -ENOMEM; | |
253 | ||
254 | buf = t; | |
255 | k = fread(buf + l, 1, n - l, f); | |
256 | ||
257 | if (k <= 0) { | |
258 | if (ferror(f)) | |
259 | return -errno; | |
260 | ||
261 | break; | |
262 | } | |
263 | ||
264 | l += k; | |
265 | n *= 2; | |
266 | ||
267 | /* Safety check */ | |
268 | if (n > 4*1024*1024) | |
269 | return -E2BIG; | |
270 | } | |
271 | ||
272 | buf[l] = 0; | |
273 | *contents = buf; | |
d78a28e3 | 274 | buf = NULL; /* do not free */ |
a5c32cff HH |
275 | |
276 | if (size) | |
277 | *size = l; | |
278 | ||
279 | return 0; | |
280 | } | |
281 | ||
717603e3 LP |
282 | int read_full_file(const char *fn, char **contents, size_t *size) { |
283 | _cleanup_fclose_ FILE *f = NULL; | |
284 | ||
285 | assert(fn); | |
286 | assert(contents); | |
287 | ||
288 | f = fopen(fn, "re"); | |
289 | if (!f) | |
290 | return -errno; | |
291 | ||
292 | return read_full_stream(f, contents, size); | |
293 | } | |
294 | ||
f73141d7 | 295 | static int parse_env_file_internal( |
717603e3 | 296 | FILE *f, |
a5c32cff | 297 | const char *fname, |
f73141d7 | 298 | const char *newline, |
335c46b5 | 299 | int (*push) (const char *filename, unsigned line, |
a5f6c30d MS |
300 | const char *key, char *value, void *userdata, int *n_pushed), |
301 | void *userdata, | |
302 | int *n_pushed) { | |
f73141d7 LP |
303 | |
304 | _cleanup_free_ char *contents = NULL, *key = NULL; | |
2b77f67e | 305 | size_t key_alloc = 0, n_key = 0, value_alloc = 0, n_value = 0, last_value_whitespace = (size_t) -1, last_key_whitespace = (size_t) -1; |
f73141d7 LP |
306 | char *p, *value = NULL; |
307 | int r; | |
335c46b5 | 308 | unsigned line = 1; |
a5c32cff | 309 | |
f73141d7 LP |
310 | enum { |
311 | PRE_KEY, | |
312 | KEY, | |
f73141d7 LP |
313 | PRE_VALUE, |
314 | VALUE, | |
315 | VALUE_ESCAPE, | |
316 | SINGLE_QUOTE_VALUE, | |
317 | SINGLE_QUOTE_VALUE_ESCAPE, | |
318 | DOUBLE_QUOTE_VALUE, | |
319 | DOUBLE_QUOTE_VALUE_ESCAPE, | |
320 | COMMENT, | |
321 | COMMENT_ESCAPE | |
322 | } state = PRE_KEY; | |
a5c32cff | 323 | |
f73141d7 | 324 | assert(newline); |
a5c32cff | 325 | |
717603e3 LP |
326 | if (f) |
327 | r = read_full_stream(f, &contents, NULL); | |
328 | else | |
329 | r = read_full_file(fname, &contents, NULL); | |
1c17cbed | 330 | if (r < 0) |
a5c32cff HH |
331 | return r; |
332 | ||
f73141d7 LP |
333 | for (p = contents; *p; p++) { |
334 | char c = *p; | |
335 | ||
336 | switch (state) { | |
337 | ||
338 | case PRE_KEY: | |
ebc05a09 | 339 | if (strchr(COMMENTS, c)) |
f73141d7 LP |
340 | state = COMMENT; |
341 | else if (!strchr(WHITESPACE, c)) { | |
342 | state = KEY; | |
2b77f67e LP |
343 | last_key_whitespace = (size_t) -1; |
344 | ||
ca2d3784 | 345 | if (!GREEDY_REALLOC(key, key_alloc, n_key+2)) { |
f73141d7 LP |
346 | r = -ENOMEM; |
347 | goto fail; | |
348 | } | |
349 | ||
350 | key[n_key++] = c; | |
351 | } | |
352 | break; | |
353 | ||
354 | case KEY: | |
355 | if (strchr(newline, c)) { | |
356 | state = PRE_KEY; | |
335c46b5 | 357 | line ++; |
f73141d7 | 358 | n_key = 0; |
2b77f67e | 359 | } else if (c == '=') { |
f73141d7 | 360 | state = PRE_VALUE; |
2b77f67e LP |
361 | last_value_whitespace = (size_t) -1; |
362 | } else { | |
363 | if (!strchr(WHITESPACE, c)) | |
364 | last_key_whitespace = (size_t) -1; | |
365 | else if (last_key_whitespace == (size_t) -1) | |
366 | last_key_whitespace = n_key; | |
367 | ||
ca2d3784 | 368 | if (!GREEDY_REALLOC(key, key_alloc, n_key+2)) { |
f73141d7 LP |
369 | r = -ENOMEM; |
370 | goto fail; | |
371 | } | |
372 | ||
373 | key[n_key++] = c; | |
374 | } | |
a5c32cff | 375 | |
f73141d7 LP |
376 | break; |
377 | ||
f73141d7 | 378 | case PRE_VALUE: |
98f59e59 | 379 | if (strchr(newline, c)) { |
f73141d7 | 380 | state = PRE_KEY; |
335c46b5 | 381 | line ++; |
f73141d7 | 382 | key[n_key] = 0; |
a5c32cff | 383 | |
f73141d7 LP |
384 | if (value) |
385 | value[n_value] = 0; | |
a5c32cff | 386 | |
ebc05a09 | 387 | /* strip trailing whitespace from key */ |
2b77f67e LP |
388 | if (last_key_whitespace != (size_t) -1) |
389 | key[last_key_whitespace] = 0; | |
ebc05a09 | 390 | |
a5f6c30d | 391 | r = push(fname, line, key, value, userdata, n_pushed); |
f73141d7 LP |
392 | if (r < 0) |
393 | goto fail; | |
394 | ||
395 | n_key = 0; | |
396 | value = NULL; | |
397 | value_alloc = n_value = 0; | |
2b77f67e | 398 | |
f73141d7 LP |
399 | } else if (c == '\'') |
400 | state = SINGLE_QUOTE_VALUE; | |
401 | else if (c == '\"') | |
402 | state = DOUBLE_QUOTE_VALUE; | |
403 | else if (c == '\\') | |
404 | state = VALUE_ESCAPE; | |
405 | else if (!strchr(WHITESPACE, c)) { | |
406 | state = VALUE; | |
407 | ||
ca2d3784 | 408 | if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) { |
f73141d7 LP |
409 | r = -ENOMEM; |
410 | goto fail; | |
411 | } | |
412 | ||
413 | value[n_value++] = c; | |
414 | } | |
415 | ||
416 | break; | |
417 | ||
418 | case VALUE: | |
419 | if (strchr(newline, c)) { | |
420 | state = PRE_KEY; | |
335c46b5 | 421 | line ++; |
98f59e59 | 422 | |
f73141d7 LP |
423 | key[n_key] = 0; |
424 | ||
425 | if (value) | |
426 | value[n_value] = 0; | |
427 | ||
2b77f67e LP |
428 | /* Chomp off trailing whitespace from value */ |
429 | if (last_value_whitespace != (size_t) -1) | |
430 | value[last_value_whitespace] = 0; | |
f73141d7 | 431 | |
ebc05a09 | 432 | /* strip trailing whitespace from key */ |
2b77f67e LP |
433 | if (last_key_whitespace != (size_t) -1) |
434 | key[last_key_whitespace] = 0; | |
ebc05a09 | 435 | |
a5f6c30d | 436 | r = push(fname, line, key, value, userdata, n_pushed); |
f73141d7 LP |
437 | if (r < 0) |
438 | goto fail; | |
439 | ||
440 | n_key = 0; | |
441 | value = NULL; | |
442 | value_alloc = n_value = 0; | |
2b77f67e | 443 | |
f73141d7 LP |
444 | } else if (c == '\\') { |
445 | state = VALUE_ESCAPE; | |
2b77f67e | 446 | last_value_whitespace = (size_t) -1; |
f73141d7 LP |
447 | } else { |
448 | if (!strchr(WHITESPACE, c)) | |
2b77f67e LP |
449 | last_value_whitespace = (size_t) -1; |
450 | else if (last_value_whitespace == (size_t) -1) | |
451 | last_value_whitespace = n_value; | |
f73141d7 | 452 | |
ca2d3784 | 453 | if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) { |
f73141d7 LP |
454 | r = -ENOMEM; |
455 | goto fail; | |
456 | } | |
457 | ||
458 | value[n_value++] = c; | |
459 | } | |
460 | ||
461 | break; | |
462 | ||
463 | case VALUE_ESCAPE: | |
464 | state = VALUE; | |
465 | ||
466 | if (!strchr(newline, c)) { | |
467 | /* Escaped newlines we eat up entirely */ | |
ca2d3784 | 468 | if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) { |
f73141d7 LP |
469 | r = -ENOMEM; |
470 | goto fail; | |
471 | } | |
472 | ||
473 | value[n_value++] = c; | |
474 | } | |
475 | break; | |
476 | ||
477 | case SINGLE_QUOTE_VALUE: | |
478 | if (c == '\'') | |
479 | state = PRE_VALUE; | |
480 | else if (c == '\\') | |
481 | state = SINGLE_QUOTE_VALUE_ESCAPE; | |
482 | else { | |
ca2d3784 | 483 | if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) { |
f73141d7 LP |
484 | r = -ENOMEM; |
485 | goto fail; | |
486 | } | |
a5c32cff | 487 | |
f73141d7 LP |
488 | value[n_value++] = c; |
489 | } | |
a5c32cff | 490 | |
f73141d7 | 491 | break; |
a5c32cff | 492 | |
f73141d7 LP |
493 | case SINGLE_QUOTE_VALUE_ESCAPE: |
494 | state = SINGLE_QUOTE_VALUE; | |
a5c32cff | 495 | |
f73141d7 | 496 | if (!strchr(newline, c)) { |
ca2d3784 | 497 | if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) { |
a5c32cff | 498 | r = -ENOMEM; |
a5c32cff HH |
499 | goto fail; |
500 | } | |
501 | ||
f73141d7 LP |
502 | value[n_value++] = c; |
503 | } | |
504 | break; | |
505 | ||
506 | case DOUBLE_QUOTE_VALUE: | |
507 | if (c == '\"') | |
508 | state = PRE_VALUE; | |
509 | else if (c == '\\') | |
510 | state = DOUBLE_QUOTE_VALUE_ESCAPE; | |
511 | else { | |
ca2d3784 | 512 | if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) { |
f73141d7 LP |
513 | r = -ENOMEM; |
514 | goto fail; | |
a5c32cff HH |
515 | } |
516 | ||
f73141d7 LP |
517 | value[n_value++] = c; |
518 | } | |
519 | ||
520 | break; | |
521 | ||
522 | case DOUBLE_QUOTE_VALUE_ESCAPE: | |
523 | state = DOUBLE_QUOTE_VALUE; | |
a5c32cff | 524 | |
f73141d7 | 525 | if (!strchr(newline, c)) { |
ca2d3784 | 526 | if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) { |
f73141d7 LP |
527 | r = -ENOMEM; |
528 | goto fail; | |
529 | } | |
a5c32cff | 530 | |
f73141d7 | 531 | value[n_value++] = c; |
a5c32cff | 532 | } |
f73141d7 LP |
533 | break; |
534 | ||
535 | case COMMENT: | |
536 | if (c == '\\') | |
537 | state = COMMENT_ESCAPE; | |
335c46b5 | 538 | else if (strchr(newline, c)) { |
f73141d7 | 539 | state = PRE_KEY; |
335c46b5 ZJS |
540 | line ++; |
541 | } | |
f73141d7 LP |
542 | break; |
543 | ||
544 | case COMMENT_ESCAPE: | |
545 | state = COMMENT; | |
546 | break; | |
a5c32cff | 547 | } |
f73141d7 LP |
548 | } |
549 | ||
550 | if (state == PRE_VALUE || | |
551 | state == VALUE || | |
552 | state == VALUE_ESCAPE || | |
553 | state == SINGLE_QUOTE_VALUE || | |
554 | state == SINGLE_QUOTE_VALUE_ESCAPE || | |
555 | state == DOUBLE_QUOTE_VALUE || | |
556 | state == DOUBLE_QUOTE_VALUE_ESCAPE) { | |
a5c32cff | 557 | |
f73141d7 LP |
558 | key[n_key] = 0; |
559 | ||
560 | if (value) | |
561 | value[n_value] = 0; | |
562 | ||
2b77f67e LP |
563 | if (state == VALUE) |
564 | if (last_value_whitespace != (size_t) -1) | |
565 | value[last_value_whitespace] = 0; | |
566 | ||
ebc05a09 | 567 | /* strip trailing whitespace from key */ |
2b77f67e LP |
568 | if (last_key_whitespace != (size_t) -1) |
569 | key[last_key_whitespace] = 0; | |
ebc05a09 | 570 | |
a5f6c30d | 571 | r = push(fname, line, key, value, userdata, n_pushed); |
f73141d7 LP |
572 | if (r < 0) |
573 | goto fail; | |
a5c32cff HH |
574 | } |
575 | ||
f73141d7 LP |
576 | return 0; |
577 | ||
a5c32cff | 578 | fail: |
f73141d7 | 579 | free(value); |
a5c32cff HH |
580 | return r; |
581 | } | |
582 | ||
717603e3 LP |
583 | static int parse_env_file_push( |
584 | const char *filename, unsigned line, | |
585 | const char *key, char *value, | |
a5f6c30d MS |
586 | void *userdata, |
587 | int *n_pushed) { | |
335c46b5 | 588 | |
f27f0e21 GB |
589 | const char *k; |
590 | va_list aq, *ap = userdata; | |
591 | ||
592 | if (!utf8_is_valid(key)) { | |
717603e3 | 593 | _cleanup_free_ char *p; |
550a40ec | 594 | |
717603e3 LP |
595 | p = utf8_escape_invalid(key); |
596 | log_error("%s:%u: invalid UTF-8 in key '%s', ignoring.", strna(filename), line, p); | |
f27f0e21 GB |
597 | return -EINVAL; |
598 | } | |
599 | ||
600 | if (value && !utf8_is_valid(value)) { | |
717603e3 | 601 | _cleanup_free_ char *p; |
550a40ec | 602 | |
717603e3 LP |
603 | p = utf8_escape_invalid(value); |
604 | log_error("%s:%u: invalid UTF-8 value for key %s: '%s', ignoring.", strna(filename), line, key, p); | |
f27f0e21 GB |
605 | return -EINVAL; |
606 | } | |
a5c32cff | 607 | |
f27f0e21 | 608 | va_copy(aq, *ap); |
a5c32cff | 609 | |
f27f0e21 GB |
610 | while ((k = va_arg(aq, const char *))) { |
611 | char **v; | |
a5c32cff | 612 | |
f27f0e21 | 613 | v = va_arg(aq, char **); |
a5c32cff | 614 | |
f27f0e21 GB |
615 | if (streq(key, k)) { |
616 | va_end(aq); | |
617 | free(*v); | |
618 | *v = value; | |
a5f6c30d MS |
619 | |
620 | if (n_pushed) | |
621 | (*n_pushed)++; | |
622 | ||
f27f0e21 | 623 | return 1; |
f73141d7 | 624 | } |
335c46b5 | 625 | } |
a5c32cff | 626 | |
f27f0e21 | 627 | va_end(aq); |
f73141d7 | 628 | free(value); |
717603e3 | 629 | |
f73141d7 LP |
630 | return 0; |
631 | } | |
a5c32cff | 632 | |
f73141d7 LP |
633 | int parse_env_file( |
634 | const char *fname, | |
635 | const char *newline, ...) { | |
a5c32cff | 636 | |
f73141d7 | 637 | va_list ap; |
a5f6c30d | 638 | int r, n_pushed = 0; |
a5c32cff | 639 | |
f73141d7 LP |
640 | if (!newline) |
641 | newline = NEWLINE; | |
a5c32cff | 642 | |
f73141d7 | 643 | va_start(ap, newline); |
a5f6c30d | 644 | r = parse_env_file_internal(NULL, fname, newline, parse_env_file_push, &ap, &n_pushed); |
f73141d7 | 645 | va_end(ap); |
a5c32cff | 646 | |
a5f6c30d | 647 | return r < 0 ? r : n_pushed; |
f73141d7 | 648 | } |
a5c32cff | 649 | |
717603e3 LP |
650 | static int load_env_file_push( |
651 | const char *filename, unsigned line, | |
652 | const char *key, char *value, | |
a5f6c30d MS |
653 | void *userdata, |
654 | int *n_pushed) { | |
f27f0e21 GB |
655 | char ***m = userdata; |
656 | char *p; | |
657 | int r; | |
a5c32cff | 658 | |
f27f0e21 | 659 | if (!utf8_is_valid(key)) { |
b5d74213 ZJS |
660 | _cleanup_free_ char *t = utf8_escape_invalid(key); |
661 | ||
717603e3 | 662 | log_error("%s:%u: invalid UTF-8 for key '%s', ignoring.", strna(filename), line, t); |
f27f0e21 GB |
663 | return -EINVAL; |
664 | } | |
665 | ||
666 | if (value && !utf8_is_valid(value)) { | |
b5d74213 ZJS |
667 | _cleanup_free_ char *t = utf8_escape_invalid(value); |
668 | ||
717603e3 | 669 | log_error("%s:%u: invalid UTF-8 value for key %s: '%s', ignoring.", strna(filename), line, key, t); |
f27f0e21 GB |
670 | return -EINVAL; |
671 | } | |
a5c32cff | 672 | |
f27f0e21 GB |
673 | p = strjoin(key, "=", strempty(value), NULL); |
674 | if (!p) | |
675 | return -ENOMEM; | |
335c46b5 | 676 | |
6e18964d ZJS |
677 | r = strv_consume(m, p); |
678 | if (r < 0) | |
f27f0e21 | 679 | return r; |
a5c32cff | 680 | |
a5f6c30d MS |
681 | if (n_pushed) |
682 | (*n_pushed)++; | |
683 | ||
f73141d7 LP |
684 | free(value); |
685 | return 0; | |
686 | } | |
687 | ||
717603e3 LP |
688 | int load_env_file(FILE *f, const char *fname, const char *newline, char ***rl) { |
689 | char **m = NULL; | |
690 | int r; | |
691 | ||
692 | if (!newline) | |
693 | newline = NEWLINE; | |
694 | ||
a5f6c30d | 695 | r = parse_env_file_internal(f, fname, newline, load_env_file_push, &m, NULL); |
717603e3 LP |
696 | if (r < 0) { |
697 | strv_free(m); | |
698 | return r; | |
699 | } | |
700 | ||
701 | *rl = m; | |
702 | return 0; | |
703 | } | |
704 | ||
705 | static int load_env_file_push_pairs( | |
706 | const char *filename, unsigned line, | |
707 | const char *key, char *value, | |
a5f6c30d MS |
708 | void *userdata, |
709 | int *n_pushed) { | |
717603e3 LP |
710 | char ***m = userdata; |
711 | int r; | |
712 | ||
713 | if (!utf8_is_valid(key)) { | |
714 | _cleanup_free_ char *t = utf8_escape_invalid(key); | |
715 | ||
716 | log_error("%s:%u: invalid UTF-8 for key '%s', ignoring.", strna(filename), line, t); | |
717 | return -EINVAL; | |
718 | } | |
719 | ||
720 | if (value && !utf8_is_valid(value)) { | |
721 | _cleanup_free_ char *t = utf8_escape_invalid(value); | |
722 | ||
723 | log_error("%s:%u: invalid UTF-8 value for key %s: '%s', ignoring.", strna(filename), line, key, t); | |
724 | return -EINVAL; | |
725 | } | |
726 | ||
727 | r = strv_extend(m, key); | |
728 | if (r < 0) | |
729 | return -ENOMEM; | |
730 | ||
731 | if (!value) { | |
732 | r = strv_extend(m, ""); | |
733 | if (r < 0) | |
734 | return -ENOMEM; | |
735 | } else { | |
736 | r = strv_push(m, value); | |
737 | if (r < 0) | |
738 | return r; | |
739 | } | |
740 | ||
a5f6c30d MS |
741 | if (n_pushed) |
742 | (*n_pushed)++; | |
743 | ||
717603e3 LP |
744 | return 0; |
745 | } | |
746 | ||
747 | int load_env_file_pairs(FILE *f, const char *fname, const char *newline, char ***rl) { | |
f73141d7 LP |
748 | char **m = NULL; |
749 | int r; | |
a5c32cff | 750 | |
f73141d7 LP |
751 | if (!newline) |
752 | newline = NEWLINE; | |
753 | ||
a5f6c30d | 754 | r = parse_env_file_internal(f, fname, newline, load_env_file_push_pairs, &m, NULL); |
f73141d7 LP |
755 | if (r < 0) { |
756 | strv_free(m); | |
757 | return r; | |
a5c32cff HH |
758 | } |
759 | ||
760 | *rl = m; | |
a5c32cff HH |
761 | return 0; |
762 | } | |
763 | ||
768100ef LP |
764 | static void write_env_var(FILE *f, const char *v) { |
765 | const char *p; | |
766 | ||
767 | p = strchr(v, '='); | |
768 | if (!p) { | |
769 | /* Fallback */ | |
770 | fputs(v, f); | |
771 | fputc('\n', f); | |
772 | return; | |
773 | } | |
774 | ||
775 | p++; | |
776 | fwrite(v, 1, p-v, f); | |
777 | ||
0ce5a806 | 778 | if (string_has_cc(p, NULL) || chars_intersect(p, WHITESPACE SHELL_NEED_QUOTES)) { |
768100ef LP |
779 | fputc('\"', f); |
780 | ||
781 | for (; *p; p++) { | |
0ce5a806 | 782 | if (strchr(SHELL_NEED_ESCAPE, *p)) |
768100ef LP |
783 | fputc('\\', f); |
784 | ||
785 | fputc(*p, f); | |
786 | } | |
787 | ||
788 | fputc('\"', f); | |
789 | } else | |
790 | fputs(p, f); | |
791 | ||
792 | fputc('\n', f); | |
793 | } | |
794 | ||
a5c32cff | 795 | int write_env_file(const char *fname, char **l) { |
7fd1b19b | 796 | _cleanup_fclose_ FILE *f = NULL; |
736937e5 LP |
797 | _cleanup_free_ char *p = NULL; |
798 | char **i; | |
a5c32cff HH |
799 | int r; |
800 | ||
736937e5 LP |
801 | assert(fname); |
802 | ||
a5c32cff HH |
803 | r = fopen_temporary(fname, &f, &p); |
804 | if (r < 0) | |
805 | return r; | |
806 | ||
807 | fchmod_umask(fileno(f), 0644); | |
808 | ||
768100ef LP |
809 | STRV_FOREACH(i, l) |
810 | write_env_var(f, *i); | |
a5c32cff | 811 | |
736937e5 LP |
812 | r = fflush_and_check(f); |
813 | if (r >= 0) { | |
814 | if (rename(p, fname) >= 0) | |
815 | return 0; | |
a5c32cff | 816 | |
736937e5 | 817 | r = -errno; |
a5c32cff HH |
818 | } |
819 | ||
736937e5 | 820 | unlink(p); |
a5c32cff HH |
821 | return r; |
822 | } | |
68fee104 ZJS |
823 | |
824 | int executable_is_script(const char *path, char **interpreter) { | |
825 | int r; | |
c8b32e11 | 826 | _cleanup_free_ char *line = NULL; |
68fee104 ZJS |
827 | int len; |
828 | char *ans; | |
829 | ||
830 | assert(path); | |
831 | ||
832 | r = read_one_line_file(path, &line); | |
833 | if (r < 0) | |
834 | return r; | |
835 | ||
836 | if (!startswith(line, "#!")) | |
837 | return 0; | |
838 | ||
839 | ans = strstrip(line + 2); | |
840 | len = strcspn(ans, " \t"); | |
841 | ||
842 | if (len == 0) | |
843 | return 0; | |
844 | ||
845 | ans = strndup(ans, len); | |
846 | if (!ans) | |
847 | return -ENOMEM; | |
848 | ||
849 | *interpreter = ans; | |
850 | return 1; | |
851 | } | |
69ab8088 ZJS |
852 | |
853 | /** | |
0a7b53bd | 854 | * Retrieve one field from a file like /proc/self/status. pattern |
c4cd1d4d AK |
855 | * should not include whitespace or the delimiter (':'). pattern matches only |
856 | * the beginning of a line. Whitespace before ':' is skipped. Whitespace and | |
857 | * zeros after the ':' will be skipped. field must be freed afterwards. | |
858 | * terminator specifies the terminating characters of the field value (not | |
859 | * included in the value). | |
69ab8088 | 860 | */ |
c4cd1d4d | 861 | int get_proc_field(const char *filename, const char *pattern, const char *terminator, char **field) { |
69ab8088 | 862 | _cleanup_free_ char *status = NULL; |
90110825 | 863 | char *t, *f; |
69ab8088 ZJS |
864 | size_t len; |
865 | int r; | |
866 | ||
c4cd1d4d | 867 | assert(terminator); |
69ab8088 | 868 | assert(filename); |
7ff7394d | 869 | assert(pattern); |
69ab8088 ZJS |
870 | assert(field); |
871 | ||
872 | r = read_full_file(filename, &status, NULL); | |
873 | if (r < 0) | |
874 | return r; | |
875 | ||
c4cd1d4d AK |
876 | t = status; |
877 | ||
878 | do { | |
879 | bool pattern_ok; | |
880 | ||
881 | do { | |
882 | t = strstr(t, pattern); | |
883 | if (!t) | |
884 | return -ENOENT; | |
885 | ||
886 | /* Check that pattern occurs in beginning of line. */ | |
887 | pattern_ok = (t == status || t[-1] == '\n'); | |
888 | ||
889 | t += strlen(pattern); | |
890 | ||
891 | } while (!pattern_ok); | |
892 | ||
893 | t += strspn(t, " \t"); | |
894 | if (!*t) | |
895 | return -ENOENT; | |
896 | ||
897 | } while (*t != ':'); | |
898 | ||
899 | t++; | |
69ab8088 | 900 | |
4ec29144 | 901 | if (*t) { |
1e5413f7 ZJS |
902 | t += strspn(t, " \t"); |
903 | ||
904 | /* Also skip zeros, because when this is used for | |
905 | * capabilities, we don't want the zeros. This way the | |
906 | * same capability set always maps to the same string, | |
907 | * irrespective of the total capability set size. For | |
908 | * other numbers it shouldn't matter. */ | |
909 | t += strspn(t, "0"); | |
4ec29144 ZJS |
910 | /* Back off one char if there's nothing but whitespace |
911 | and zeros */ | |
1e5413f7 | 912 | if (!*t || isspace(*t)) |
4ec29144 ZJS |
913 | t --; |
914 | } | |
69ab8088 | 915 | |
c4cd1d4d | 916 | len = strcspn(t, terminator); |
69ab8088 | 917 | |
90110825 LP |
918 | f = strndup(t, len); |
919 | if (!f) | |
69ab8088 ZJS |
920 | return -ENOMEM; |
921 | ||
90110825 | 922 | *field = f; |
69ab8088 ZJS |
923 | return 0; |
924 | } | |
0d39fa9c LP |
925 | |
926 | DIR *xopendirat(int fd, const char *name, int flags) { | |
927 | int nfd; | |
928 | DIR *d; | |
929 | ||
930 | assert(!(flags & O_CREAT)); | |
931 | ||
932 | nfd = openat(fd, name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|flags, 0); | |
933 | if (nfd < 0) | |
934 | return NULL; | |
935 | ||
936 | d = fdopendir(nfd); | |
937 | if (!d) { | |
938 | safe_close(nfd); | |
939 | return NULL; | |
940 | } | |
941 | ||
942 | return d; | |
943 | } | |
944 | ||
945 | static int search_and_fopen_internal(const char *path, const char *mode, const char *root, char **search, FILE **_f) { | |
946 | char **i; | |
947 | ||
948 | assert(path); | |
949 | assert(mode); | |
950 | assert(_f); | |
951 | ||
952 | if (!path_strv_resolve_uniq(search, root)) | |
953 | return -ENOMEM; | |
954 | ||
955 | STRV_FOREACH(i, search) { | |
956 | _cleanup_free_ char *p = NULL; | |
957 | FILE *f; | |
958 | ||
959 | if (root) | |
960 | p = strjoin(root, *i, "/", path, NULL); | |
961 | else | |
962 | p = strjoin(*i, "/", path, NULL); | |
963 | if (!p) | |
964 | return -ENOMEM; | |
965 | ||
966 | f = fopen(p, mode); | |
967 | if (f) { | |
968 | *_f = f; | |
969 | return 0; | |
970 | } | |
971 | ||
972 | if (errno != ENOENT) | |
973 | return -errno; | |
974 | } | |
975 | ||
976 | return -ENOENT; | |
977 | } | |
978 | ||
979 | int search_and_fopen(const char *path, const char *mode, const char *root, const char **search, FILE **_f) { | |
980 | _cleanup_strv_free_ char **copy = NULL; | |
981 | ||
982 | assert(path); | |
983 | assert(mode); | |
984 | assert(_f); | |
985 | ||
986 | if (path_is_absolute(path)) { | |
987 | FILE *f; | |
988 | ||
989 | f = fopen(path, mode); | |
990 | if (f) { | |
991 | *_f = f; | |
992 | return 0; | |
993 | } | |
994 | ||
995 | return -errno; | |
996 | } | |
997 | ||
998 | copy = strv_copy((char**) search); | |
999 | if (!copy) | |
1000 | return -ENOMEM; | |
1001 | ||
1002 | return search_and_fopen_internal(path, mode, root, copy, _f); | |
1003 | } | |
1004 | ||
1005 | int search_and_fopen_nulstr(const char *path, const char *mode, const char *root, const char *search, FILE **_f) { | |
1006 | _cleanup_strv_free_ char **s = NULL; | |
1007 | ||
1008 | if (path_is_absolute(path)) { | |
1009 | FILE *f; | |
1010 | ||
1011 | f = fopen(path, mode); | |
1012 | if (f) { | |
1013 | *_f = f; | |
1014 | return 0; | |
1015 | } | |
1016 | ||
1017 | return -errno; | |
1018 | } | |
1019 | ||
1020 | s = strv_split_nulstr(search); | |
1021 | if (!s) | |
1022 | return -ENOMEM; | |
1023 | ||
1024 | return search_and_fopen_internal(path, mode, root, s, _f); | |
1025 | } | |
1026 | ||
1027 | int fopen_temporary(const char *path, FILE **_f, char **_temp_path) { | |
1028 | FILE *f; | |
1029 | char *t; | |
1030 | int r, fd; | |
1031 | ||
1032 | assert(path); | |
1033 | assert(_f); | |
1034 | assert(_temp_path); | |
1035 | ||
1036 | r = tempfn_xxxxxx(path, NULL, &t); | |
1037 | if (r < 0) | |
1038 | return r; | |
1039 | ||
1040 | fd = mkostemp_safe(t, O_WRONLY|O_CLOEXEC); | |
1041 | if (fd < 0) { | |
1042 | free(t); | |
1043 | return -errno; | |
1044 | } | |
1045 | ||
1046 | f = fdopen(fd, "we"); | |
1047 | if (!f) { | |
1048 | unlink_noerrno(t); | |
1049 | free(t); | |
1050 | safe_close(fd); | |
1051 | return -errno; | |
1052 | } | |
1053 | ||
1054 | *_f = f; | |
1055 | *_temp_path = t; | |
1056 | ||
1057 | return 0; | |
1058 | } | |
1059 | ||
1060 | int fflush_and_check(FILE *f) { | |
1061 | assert(f); | |
1062 | ||
1063 | errno = 0; | |
1064 | fflush(f); | |
1065 | ||
1066 | if (ferror(f)) | |
f5e5c28f | 1067 | return errno > 0 ? -errno : -EIO; |
0d39fa9c LP |
1068 | |
1069 | return 0; | |
1070 | } | |
1071 | ||
1072 | /* This is much like like mkostemp() but is subject to umask(). */ | |
1073 | int mkostemp_safe(char *pattern, int flags) { | |
1074 | _cleanup_umask_ mode_t u; | |
1075 | int fd; | |
1076 | ||
1077 | assert(pattern); | |
1078 | ||
1079 | u = umask(077); | |
1080 | ||
1081 | fd = mkostemp(pattern, flags); | |
1082 | if (fd < 0) | |
1083 | return -errno; | |
1084 | ||
1085 | return fd; | |
1086 | } | |
1087 | ||
1088 | int open_tmpfile(const char *path, int flags) { | |
1089 | char *p; | |
1090 | int fd; | |
1091 | ||
1092 | assert(path); | |
1093 | ||
1094 | #ifdef O_TMPFILE | |
1095 | /* Try O_TMPFILE first, if it is supported */ | |
1096 | fd = open(path, flags|O_TMPFILE|O_EXCL, S_IRUSR|S_IWUSR); | |
1097 | if (fd >= 0) | |
1098 | return fd; | |
1099 | #endif | |
1100 | ||
1101 | /* Fall back to unguessable name + unlinking */ | |
1102 | p = strjoina(path, "/systemd-tmp-XXXXXX"); | |
1103 | ||
1104 | fd = mkostemp_safe(p, flags); | |
1105 | if (fd < 0) | |
1106 | return fd; | |
1107 | ||
1108 | unlink(p); | |
1109 | return fd; | |
1110 | } | |
1111 | ||
1112 | int tempfn_xxxxxx(const char *p, const char *extra, char **ret) { | |
1113 | const char *fn; | |
1114 | char *t; | |
1115 | ||
1116 | assert(p); | |
1117 | assert(ret); | |
1118 | ||
1119 | /* | |
1120 | * Turns this: | |
1121 | * /foo/bar/waldo | |
1122 | * | |
1123 | * Into this: | |
1124 | * /foo/bar/.#<extra>waldoXXXXXX | |
1125 | */ | |
1126 | ||
1127 | fn = basename(p); | |
1128 | if (!filename_is_valid(fn)) | |
1129 | return -EINVAL; | |
1130 | ||
1131 | if (extra == NULL) | |
1132 | extra = ""; | |
1133 | ||
1134 | t = new(char, strlen(p) + 2 + strlen(extra) + 6 + 1); | |
1135 | if (!t) | |
1136 | return -ENOMEM; | |
1137 | ||
1138 | strcpy(stpcpy(stpcpy(stpcpy(mempcpy(t, p, fn - p), ".#"), extra), fn), "XXXXXX"); | |
1139 | ||
1140 | *ret = path_kill_slashes(t); | |
1141 | return 0; | |
1142 | } | |
1143 | ||
1144 | int tempfn_random(const char *p, const char *extra, char **ret) { | |
1145 | const char *fn; | |
1146 | char *t, *x; | |
1147 | uint64_t u; | |
1148 | unsigned i; | |
1149 | ||
1150 | assert(p); | |
1151 | assert(ret); | |
1152 | ||
1153 | /* | |
1154 | * Turns this: | |
1155 | * /foo/bar/waldo | |
1156 | * | |
1157 | * Into this: | |
1158 | * /foo/bar/.#<extra>waldobaa2a261115984a9 | |
1159 | */ | |
1160 | ||
1161 | fn = basename(p); | |
1162 | if (!filename_is_valid(fn)) | |
1163 | return -EINVAL; | |
1164 | ||
1165 | if (!extra) | |
1166 | extra = ""; | |
1167 | ||
1168 | t = new(char, strlen(p) + 2 + strlen(extra) + 16 + 1); | |
1169 | if (!t) | |
1170 | return -ENOMEM; | |
1171 | ||
1172 | x = stpcpy(stpcpy(stpcpy(mempcpy(t, p, fn - p), ".#"), extra), fn); | |
1173 | ||
1174 | u = random_u64(); | |
1175 | for (i = 0; i < 16; i++) { | |
1176 | *(x++) = hexchar(u & 0xF); | |
1177 | u >>= 4; | |
1178 | } | |
1179 | ||
1180 | *x = 0; | |
1181 | ||
1182 | *ret = path_kill_slashes(t); | |
1183 | return 0; | |
1184 | } | |
1185 | ||
1186 | int tempfn_random_child(const char *p, const char *extra, char **ret) { | |
1187 | char *t, *x; | |
1188 | uint64_t u; | |
1189 | unsigned i; | |
1190 | ||
1191 | assert(p); | |
1192 | assert(ret); | |
1193 | ||
1194 | /* Turns this: | |
1195 | * /foo/bar/waldo | |
1196 | * Into this: | |
1197 | * /foo/bar/waldo/.#<extra>3c2b6219aa75d7d0 | |
1198 | */ | |
1199 | ||
1200 | if (!extra) | |
1201 | extra = ""; | |
1202 | ||
1203 | t = new(char, strlen(p) + 3 + strlen(extra) + 16 + 1); | |
1204 | if (!t) | |
1205 | return -ENOMEM; | |
1206 | ||
1207 | x = stpcpy(stpcpy(stpcpy(t, p), "/.#"), extra); | |
1208 | ||
1209 | u = random_u64(); | |
1210 | for (i = 0; i < 16; i++) { | |
1211 | *(x++) = hexchar(u & 0xF); | |
1212 | u >>= 4; | |
1213 | } | |
1214 | ||
1215 | *x = 0; | |
1216 | ||
1217 | *ret = path_kill_slashes(t); | |
1218 | return 0; | |
1219 | } | |
33d52ab9 LP |
1220 | |
1221 | int write_timestamp_file_atomic(const char *fn, usec_t n) { | |
1222 | char ln[DECIMAL_STR_MAX(n)+2]; | |
1223 | ||
1224 | /* Creates a "timestamp" file, that contains nothing but a | |
1225 | * usec_t timestamp, formatted in ASCII. */ | |
1226 | ||
1227 | if (n <= 0 || n >= USEC_INFINITY) | |
1228 | return -ERANGE; | |
1229 | ||
1230 | xsprintf(ln, USEC_FMT "\n", n); | |
1231 | ||
1232 | return write_string_file(fn, ln, WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_ATOMIC); | |
1233 | } | |
1234 | ||
1235 | int read_timestamp_file(const char *fn, usec_t *ret) { | |
1236 | _cleanup_free_ char *ln = NULL; | |
1237 | uint64_t t; | |
1238 | int r; | |
1239 | ||
1240 | r = read_one_line_file(fn, &ln); | |
1241 | if (r < 0) | |
1242 | return r; | |
1243 | ||
1244 | r = safe_atou64(ln, &t); | |
1245 | if (r < 0) | |
1246 | return r; | |
1247 | ||
1248 | if (t <= 0 || t >= (uint64_t) USEC_INFINITY) | |
1249 | return -ERANGE; | |
1250 | ||
1251 | *ret = (usec_t) t; | |
1252 | return 0; | |
1253 | } |