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Commit | Line | Data |
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60918275 LP |
1 | /*-*- Mode: C; c-basic-offset: 8 -*-*/ |
2 | ||
a7334b09 LP |
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 General Public License as published by | |
10 | the Free Software Foundation; either version 2 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 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
60918275 LP |
22 | #include <assert.h> |
23 | #include <string.h> | |
24 | #include <unistd.h> | |
25 | #include <errno.h> | |
85261803 | 26 | #include <stdlib.h> |
034c6ed7 LP |
27 | #include <signal.h> |
28 | #include <stdio.h> | |
1dccbe19 LP |
29 | #include <syslog.h> |
30 | #include <sched.h> | |
31 | #include <sys/resource.h> | |
ef886c6a | 32 | #include <linux/sched.h> |
a9f5d454 LP |
33 | #include <sys/types.h> |
34 | #include <sys/stat.h> | |
3a0ecb08 | 35 | #include <fcntl.h> |
a0d40ac5 | 36 | #include <dirent.h> |
601f6a1e LP |
37 | #include <sys/ioctl.h> |
38 | #include <linux/vt.h> | |
39 | #include <linux/tiocl.h> | |
80876c20 LP |
40 | #include <termios.h> |
41 | #include <stdarg.h> | |
42 | #include <sys/inotify.h> | |
43 | #include <sys/poll.h> | |
8d567588 | 44 | #include <libgen.h> |
3177a7fa | 45 | #include <ctype.h> |
60918275 LP |
46 | |
47 | #include "macro.h" | |
48 | #include "util.h" | |
1dccbe19 LP |
49 | #include "ioprio.h" |
50 | #include "missing.h" | |
a9f5d454 | 51 | #include "log.h" |
65d2ebdc | 52 | #include "strv.h" |
60918275 | 53 | |
e05797fb LP |
54 | bool streq_ptr(const char *a, const char *b) { |
55 | ||
56 | /* Like streq(), but tries to make sense of NULL pointers */ | |
57 | ||
58 | if (a && b) | |
59 | return streq(a, b); | |
60 | ||
61 | if (!a && !b) | |
62 | return true; | |
63 | ||
64 | return false; | |
65 | } | |
66 | ||
47be870b | 67 | usec_t now(clockid_t clock_id) { |
60918275 LP |
68 | struct timespec ts; |
69 | ||
47be870b | 70 | assert_se(clock_gettime(clock_id, &ts) == 0); |
60918275 LP |
71 | |
72 | return timespec_load(&ts); | |
73 | } | |
74 | ||
871d7de4 LP |
75 | timestamp* timestamp_get(timestamp *ts) { |
76 | assert(ts); | |
77 | ||
78 | ts->realtime = now(CLOCK_REALTIME); | |
79 | ts->monotonic = now(CLOCK_MONOTONIC); | |
80 | ||
81 | return ts; | |
82 | } | |
83 | ||
60918275 LP |
84 | usec_t timespec_load(const struct timespec *ts) { |
85 | assert(ts); | |
86 | ||
87 | return | |
88 | (usec_t) ts->tv_sec * USEC_PER_SEC + | |
89 | (usec_t) ts->tv_nsec / NSEC_PER_USEC; | |
90 | } | |
91 | ||
92 | struct timespec *timespec_store(struct timespec *ts, usec_t u) { | |
93 | assert(ts); | |
94 | ||
95 | ts->tv_sec = (time_t) (u / USEC_PER_SEC); | |
96 | ts->tv_nsec = (long int) ((u % USEC_PER_SEC) * NSEC_PER_USEC); | |
97 | ||
98 | return ts; | |
99 | } | |
100 | ||
101 | usec_t timeval_load(const struct timeval *tv) { | |
102 | assert(tv); | |
103 | ||
104 | return | |
105 | (usec_t) tv->tv_sec * USEC_PER_SEC + | |
106 | (usec_t) tv->tv_usec; | |
107 | } | |
108 | ||
109 | struct timeval *timeval_store(struct timeval *tv, usec_t u) { | |
110 | assert(tv); | |
111 | ||
112 | tv->tv_sec = (time_t) (u / USEC_PER_SEC); | |
113 | tv->tv_usec = (suseconds_t) (u % USEC_PER_SEC); | |
114 | ||
115 | return tv; | |
116 | } | |
117 | ||
118 | bool endswith(const char *s, const char *postfix) { | |
119 | size_t sl, pl; | |
120 | ||
121 | assert(s); | |
122 | assert(postfix); | |
123 | ||
124 | sl = strlen(s); | |
125 | pl = strlen(postfix); | |
126 | ||
d4d0d4db LP |
127 | if (pl == 0) |
128 | return true; | |
129 | ||
60918275 LP |
130 | if (sl < pl) |
131 | return false; | |
132 | ||
133 | return memcmp(s + sl - pl, postfix, pl) == 0; | |
134 | } | |
135 | ||
136 | bool startswith(const char *s, const char *prefix) { | |
137 | size_t sl, pl; | |
138 | ||
139 | assert(s); | |
140 | assert(prefix); | |
141 | ||
142 | sl = strlen(s); | |
143 | pl = strlen(prefix); | |
144 | ||
d4d0d4db LP |
145 | if (pl == 0) |
146 | return true; | |
147 | ||
60918275 LP |
148 | if (sl < pl) |
149 | return false; | |
150 | ||
151 | return memcmp(s, prefix, pl) == 0; | |
152 | } | |
153 | ||
3177a7fa MAP |
154 | bool startswith_no_case(const char *s, const char *prefix) { |
155 | size_t sl, pl; | |
156 | unsigned i; | |
157 | ||
158 | assert(s); | |
159 | assert(prefix); | |
160 | ||
161 | sl = strlen(s); | |
162 | pl = strlen(prefix); | |
163 | ||
164 | if (pl == 0) | |
165 | return true; | |
166 | ||
167 | if (sl < pl) | |
168 | return false; | |
169 | ||
170 | for(i = 0; i < pl; ++i) { | |
171 | if (tolower(s[i]) != tolower(prefix[i])) | |
172 | return false; | |
173 | } | |
174 | ||
175 | return true; | |
176 | } | |
177 | ||
79d6d816 LP |
178 | bool first_word(const char *s, const char *word) { |
179 | size_t sl, wl; | |
180 | ||
181 | assert(s); | |
182 | assert(word); | |
183 | ||
184 | sl = strlen(s); | |
185 | wl = strlen(word); | |
186 | ||
187 | if (sl < wl) | |
188 | return false; | |
189 | ||
d4d0d4db LP |
190 | if (wl == 0) |
191 | return true; | |
192 | ||
79d6d816 LP |
193 | if (memcmp(s, word, wl) != 0) |
194 | return false; | |
195 | ||
d4d0d4db LP |
196 | return s[wl] == 0 || |
197 | strchr(WHITESPACE, s[wl]); | |
79d6d816 LP |
198 | } |
199 | ||
42f4e3c4 | 200 | int close_nointr(int fd) { |
60918275 LP |
201 | assert(fd >= 0); |
202 | ||
203 | for (;;) { | |
204 | int r; | |
205 | ||
206 | if ((r = close(fd)) >= 0) | |
207 | return r; | |
208 | ||
209 | if (errno != EINTR) | |
210 | return r; | |
211 | } | |
212 | } | |
85261803 | 213 | |
85f136b5 | 214 | void close_nointr_nofail(int fd) { |
80876c20 | 215 | int saved_errno = errno; |
85f136b5 LP |
216 | |
217 | /* like close_nointr() but cannot fail, and guarantees errno | |
218 | * is unchanged */ | |
219 | ||
220 | assert_se(close_nointr(fd) == 0); | |
80876c20 LP |
221 | |
222 | errno = saved_errno; | |
85f136b5 LP |
223 | } |
224 | ||
85261803 LP |
225 | int parse_boolean(const char *v) { |
226 | assert(v); | |
227 | ||
44d8db9e | 228 | if (streq(v, "1") || v[0] == 'y' || v[0] == 'Y' || v[0] == 't' || v[0] == 'T' || !strcasecmp(v, "on")) |
85261803 | 229 | return 1; |
44d8db9e | 230 | else if (streq(v, "0") || v[0] == 'n' || v[0] == 'N' || v[0] == 'f' || v[0] == 'F' || !strcasecmp(v, "off")) |
85261803 LP |
231 | return 0; |
232 | ||
233 | return -EINVAL; | |
234 | } | |
235 | ||
236 | int safe_atou(const char *s, unsigned *ret_u) { | |
237 | char *x = NULL; | |
034c6ed7 | 238 | unsigned long l; |
85261803 LP |
239 | |
240 | assert(s); | |
241 | assert(ret_u); | |
242 | ||
243 | errno = 0; | |
244 | l = strtoul(s, &x, 0); | |
245 | ||
246 | if (!x || *x || errno) | |
247 | return errno ? -errno : -EINVAL; | |
248 | ||
034c6ed7 | 249 | if ((unsigned long) (unsigned) l != l) |
85261803 LP |
250 | return -ERANGE; |
251 | ||
252 | *ret_u = (unsigned) l; | |
253 | return 0; | |
254 | } | |
255 | ||
256 | int safe_atoi(const char *s, int *ret_i) { | |
257 | char *x = NULL; | |
034c6ed7 | 258 | long l; |
85261803 LP |
259 | |
260 | assert(s); | |
261 | assert(ret_i); | |
262 | ||
263 | errno = 0; | |
264 | l = strtol(s, &x, 0); | |
265 | ||
266 | if (!x || *x || errno) | |
267 | return errno ? -errno : -EINVAL; | |
268 | ||
034c6ed7 | 269 | if ((long) (int) l != l) |
85261803 LP |
270 | return -ERANGE; |
271 | ||
034c6ed7 LP |
272 | *ret_i = (int) l; |
273 | return 0; | |
274 | } | |
275 | ||
276 | int safe_atolu(const char *s, long unsigned *ret_lu) { | |
277 | char *x = NULL; | |
278 | unsigned long l; | |
279 | ||
280 | assert(s); | |
281 | assert(ret_lu); | |
282 | ||
283 | errno = 0; | |
284 | l = strtoul(s, &x, 0); | |
285 | ||
286 | if (!x || *x || errno) | |
287 | return errno ? -errno : -EINVAL; | |
288 | ||
289 | *ret_lu = l; | |
290 | return 0; | |
291 | } | |
292 | ||
293 | int safe_atoli(const char *s, long int *ret_li) { | |
294 | char *x = NULL; | |
295 | long l; | |
296 | ||
297 | assert(s); | |
298 | assert(ret_li); | |
299 | ||
300 | errno = 0; | |
301 | l = strtol(s, &x, 0); | |
302 | ||
303 | if (!x || *x || errno) | |
304 | return errno ? -errno : -EINVAL; | |
305 | ||
306 | *ret_li = l; | |
307 | return 0; | |
308 | } | |
309 | ||
310 | int safe_atollu(const char *s, long long unsigned *ret_llu) { | |
311 | char *x = NULL; | |
312 | unsigned long long l; | |
313 | ||
314 | assert(s); | |
315 | assert(ret_llu); | |
316 | ||
317 | errno = 0; | |
318 | l = strtoull(s, &x, 0); | |
319 | ||
320 | if (!x || *x || errno) | |
321 | return errno ? -errno : -EINVAL; | |
322 | ||
323 | *ret_llu = l; | |
324 | return 0; | |
325 | } | |
326 | ||
327 | int safe_atolli(const char *s, long long int *ret_lli) { | |
328 | char *x = NULL; | |
329 | long long l; | |
330 | ||
331 | assert(s); | |
332 | assert(ret_lli); | |
333 | ||
334 | errno = 0; | |
335 | l = strtoll(s, &x, 0); | |
336 | ||
337 | if (!x || *x || errno) | |
338 | return errno ? -errno : -EINVAL; | |
339 | ||
340 | *ret_lli = l; | |
85261803 LP |
341 | return 0; |
342 | } | |
a41e8209 | 343 | |
a41e8209 | 344 | /* Split a string into words. */ |
65d2ebdc | 345 | char *split(const char *c, size_t *l, const char *separator, char **state) { |
a41e8209 LP |
346 | char *current; |
347 | ||
348 | current = *state ? *state : (char*) c; | |
349 | ||
350 | if (!*current || *c == 0) | |
351 | return NULL; | |
352 | ||
65d2ebdc LP |
353 | current += strspn(current, separator); |
354 | *l = strcspn(current, separator); | |
82919e3d LP |
355 | *state = current+*l; |
356 | ||
357 | return (char*) current; | |
358 | } | |
359 | ||
034c6ed7 LP |
360 | /* Split a string into words, but consider strings enclosed in '' and |
361 | * "" as words even if they include spaces. */ | |
362 | char *split_quoted(const char *c, size_t *l, char **state) { | |
363 | char *current; | |
364 | ||
365 | current = *state ? *state : (char*) c; | |
366 | ||
367 | if (!*current || *c == 0) | |
368 | return NULL; | |
369 | ||
370 | current += strspn(current, WHITESPACE); | |
371 | ||
372 | if (*current == '\'') { | |
373 | current ++; | |
374 | *l = strcspn(current, "'"); | |
375 | *state = current+*l; | |
376 | ||
377 | if (**state == '\'') | |
378 | (*state)++; | |
379 | } else if (*current == '\"') { | |
380 | current ++; | |
b858b600 | 381 | *l = strcspn(current, "\""); |
034c6ed7 LP |
382 | *state = current+*l; |
383 | ||
384 | if (**state == '\"') | |
385 | (*state)++; | |
386 | } else { | |
387 | *l = strcspn(current, WHITESPACE); | |
388 | *state = current+*l; | |
389 | } | |
390 | ||
44d8db9e LP |
391 | /* FIXME: Cannot deal with strings that have spaces AND ticks |
392 | * in them */ | |
393 | ||
034c6ed7 LP |
394 | return (char*) current; |
395 | } | |
396 | ||
65d2ebdc LP |
397 | char **split_path_and_make_absolute(const char *p) { |
398 | char **l; | |
399 | assert(p); | |
400 | ||
401 | if (!(l = strv_split(p, ":"))) | |
402 | return NULL; | |
403 | ||
404 | if (!strv_path_make_absolute_cwd(l)) { | |
405 | strv_free(l); | |
406 | return NULL; | |
407 | } | |
408 | ||
409 | return l; | |
410 | } | |
411 | ||
034c6ed7 LP |
412 | int get_parent_of_pid(pid_t pid, pid_t *_ppid) { |
413 | int r; | |
414 | FILE *f; | |
415 | char fn[132], line[256], *p; | |
416 | long long unsigned ppid; | |
417 | ||
418 | assert(pid >= 0); | |
419 | assert(_ppid); | |
420 | ||
421 | assert_se(snprintf(fn, sizeof(fn)-1, "/proc/%llu/stat", (unsigned long long) pid) < (int) (sizeof(fn)-1)); | |
422 | fn[sizeof(fn)-1] = 0; | |
423 | ||
424 | if (!(f = fopen(fn, "r"))) | |
425 | return -errno; | |
426 | ||
427 | if (!(fgets(line, sizeof(line), f))) { | |
428 | r = -errno; | |
429 | fclose(f); | |
430 | return r; | |
431 | } | |
432 | ||
433 | fclose(f); | |
434 | ||
435 | /* Let's skip the pid and comm fields. The latter is enclosed | |
436 | * in () but does not escape any () in its value, so let's | |
437 | * skip over it manually */ | |
438 | ||
439 | if (!(p = strrchr(line, ')'))) | |
440 | return -EIO; | |
441 | ||
442 | p++; | |
443 | ||
444 | if (sscanf(p, " " | |
445 | "%*c " /* state */ | |
446 | "%llu ", /* ppid */ | |
447 | &ppid) != 1) | |
448 | return -EIO; | |
449 | ||
450 | if ((long long unsigned) (pid_t) ppid != ppid) | |
451 | return -ERANGE; | |
452 | ||
453 | *_ppid = (pid_t) ppid; | |
454 | ||
455 | return 0; | |
456 | } | |
457 | ||
458 | int write_one_line_file(const char *fn, const char *line) { | |
459 | FILE *f; | |
460 | int r; | |
461 | ||
462 | assert(fn); | |
463 | assert(line); | |
464 | ||
465 | if (!(f = fopen(fn, "we"))) | |
466 | return -errno; | |
467 | ||
468 | if (fputs(line, f) < 0) { | |
469 | r = -errno; | |
470 | goto finish; | |
471 | } | |
472 | ||
473 | r = 0; | |
474 | finish: | |
475 | fclose(f); | |
476 | return r; | |
477 | } | |
478 | ||
479 | int read_one_line_file(const char *fn, char **line) { | |
480 | FILE *f; | |
481 | int r; | |
11316633 | 482 | char t[2048], *c; |
034c6ed7 LP |
483 | |
484 | assert(fn); | |
485 | assert(line); | |
486 | ||
487 | if (!(f = fopen(fn, "re"))) | |
488 | return -errno; | |
489 | ||
490 | if (!(fgets(t, sizeof(t), f))) { | |
491 | r = -errno; | |
492 | goto finish; | |
493 | } | |
494 | ||
495 | if (!(c = strdup(t))) { | |
496 | r = -ENOMEM; | |
497 | goto finish; | |
498 | } | |
499 | ||
500 | *line = c; | |
501 | r = 0; | |
502 | ||
503 | finish: | |
504 | fclose(f); | |
505 | return r; | |
506 | } | |
44d8db9e | 507 | |
7072ced8 LP |
508 | char *truncate_nl(char *s) { |
509 | assert(s); | |
510 | ||
511 | s[strcspn(s, NEWLINE)] = 0; | |
512 | return s; | |
513 | } | |
514 | ||
515 | int get_process_name(pid_t pid, char **name) { | |
516 | char *p; | |
517 | int r; | |
518 | ||
519 | assert(pid >= 1); | |
520 | assert(name); | |
521 | ||
522 | if (asprintf(&p, "/proc/%llu/comm", (unsigned long long) pid) < 0) | |
523 | return -ENOMEM; | |
524 | ||
525 | r = read_one_line_file(p, name); | |
526 | free(p); | |
527 | ||
528 | if (r < 0) | |
529 | return r; | |
530 | ||
531 | truncate_nl(*name); | |
532 | return 0; | |
533 | } | |
534 | ||
44d8db9e LP |
535 | char *strappend(const char *s, const char *suffix) { |
536 | size_t a, b; | |
537 | char *r; | |
538 | ||
539 | assert(s); | |
540 | assert(suffix); | |
541 | ||
542 | a = strlen(s); | |
543 | b = strlen(suffix); | |
544 | ||
545 | if (!(r = new(char, a+b+1))) | |
546 | return NULL; | |
547 | ||
548 | memcpy(r, s, a); | |
549 | memcpy(r+a, suffix, b); | |
550 | r[a+b] = 0; | |
551 | ||
552 | return r; | |
553 | } | |
87f0e418 LP |
554 | |
555 | int readlink_malloc(const char *p, char **r) { | |
556 | size_t l = 100; | |
557 | ||
558 | assert(p); | |
559 | assert(r); | |
560 | ||
561 | for (;;) { | |
562 | char *c; | |
563 | ssize_t n; | |
564 | ||
565 | if (!(c = new(char, l))) | |
566 | return -ENOMEM; | |
567 | ||
568 | if ((n = readlink(p, c, l-1)) < 0) { | |
569 | int ret = -errno; | |
570 | free(c); | |
571 | return ret; | |
572 | } | |
573 | ||
574 | if ((size_t) n < l-1) { | |
575 | c[n] = 0; | |
576 | *r = c; | |
577 | return 0; | |
578 | } | |
579 | ||
580 | free(c); | |
581 | l *= 2; | |
582 | } | |
583 | } | |
584 | ||
585 | char *file_name_from_path(const char *p) { | |
586 | char *r; | |
587 | ||
588 | assert(p); | |
589 | ||
590 | if ((r = strrchr(p, '/'))) | |
591 | return r + 1; | |
592 | ||
593 | return (char*) p; | |
594 | } | |
0301abf4 LP |
595 | |
596 | bool path_is_absolute(const char *p) { | |
597 | assert(p); | |
598 | ||
599 | return p[0] == '/'; | |
600 | } | |
601 | ||
602 | bool is_path(const char *p) { | |
603 | ||
604 | return !!strchr(p, '/'); | |
605 | } | |
606 | ||
607 | char *path_make_absolute(const char *p, const char *prefix) { | |
608 | char *r; | |
609 | ||
610 | assert(p); | |
611 | ||
65d2ebdc LP |
612 | /* Makes every item in the list an absolute path by prepending |
613 | * the prefix, if specified and necessary */ | |
614 | ||
0301abf4 LP |
615 | if (path_is_absolute(p) || !prefix) |
616 | return strdup(p); | |
617 | ||
618 | if (asprintf(&r, "%s/%s", prefix, p) < 0) | |
619 | return NULL; | |
620 | ||
621 | return r; | |
622 | } | |
2a987ee8 | 623 | |
65d2ebdc LP |
624 | char *path_make_absolute_cwd(const char *p) { |
625 | char *cwd, *r; | |
626 | ||
627 | assert(p); | |
628 | ||
629 | /* Similar to path_make_absolute(), but prefixes with the | |
630 | * current working directory. */ | |
631 | ||
632 | if (path_is_absolute(p)) | |
633 | return strdup(p); | |
634 | ||
635 | if (!(cwd = get_current_dir_name())) | |
636 | return NULL; | |
637 | ||
638 | r = path_make_absolute(p, cwd); | |
639 | free(cwd); | |
640 | ||
641 | return r; | |
642 | } | |
643 | ||
644 | char **strv_path_make_absolute_cwd(char **l) { | |
645 | char **s; | |
646 | ||
647 | /* Goes through every item in the string list and makes it | |
648 | * absolute. This works in place and won't rollback any | |
649 | * changes on failure. */ | |
650 | ||
651 | STRV_FOREACH(s, l) { | |
652 | char *t; | |
653 | ||
654 | if (!(t = path_make_absolute_cwd(*s))) | |
655 | return NULL; | |
656 | ||
657 | free(*s); | |
658 | *s = t; | |
659 | } | |
660 | ||
661 | return l; | |
662 | } | |
663 | ||
c3f6d675 LP |
664 | char **strv_path_canonicalize(char **l) { |
665 | char **s; | |
666 | unsigned k = 0; | |
667 | bool enomem = false; | |
668 | ||
669 | if (strv_isempty(l)) | |
670 | return l; | |
671 | ||
672 | /* Goes through every item in the string list and canonicalize | |
673 | * the path. This works in place and won't rollback any | |
674 | * changes on failure. */ | |
675 | ||
676 | STRV_FOREACH(s, l) { | |
677 | char *t, *u; | |
678 | ||
679 | t = path_make_absolute_cwd(*s); | |
680 | free(*s); | |
681 | ||
682 | if (!t) { | |
683 | enomem = true; | |
684 | continue; | |
685 | } | |
686 | ||
687 | errno = 0; | |
688 | u = canonicalize_file_name(t); | |
689 | free(t); | |
690 | ||
691 | if (!u) { | |
692 | if (errno == ENOMEM || !errno) | |
693 | enomem = true; | |
694 | ||
695 | continue; | |
696 | } | |
697 | ||
698 | l[k++] = u; | |
699 | } | |
700 | ||
701 | l[k] = NULL; | |
702 | ||
703 | if (enomem) | |
704 | return NULL; | |
705 | ||
706 | return l; | |
707 | } | |
708 | ||
2a987ee8 LP |
709 | int reset_all_signal_handlers(void) { |
710 | int sig; | |
711 | ||
712 | for (sig = 1; sig < _NSIG; sig++) { | |
713 | struct sigaction sa; | |
714 | ||
715 | if (sig == SIGKILL || sig == SIGSTOP) | |
716 | continue; | |
717 | ||
718 | zero(sa); | |
719 | sa.sa_handler = SIG_DFL; | |
431c32bf | 720 | sa.sa_flags = SA_RESTART; |
2a987ee8 LP |
721 | |
722 | /* On Linux the first two RT signals are reserved by | |
723 | * glibc, and sigaction() will return EINVAL for them. */ | |
724 | if ((sigaction(sig, &sa, NULL) < 0)) | |
725 | if (errno != EINVAL) | |
726 | return -errno; | |
727 | } | |
728 | ||
8e274523 | 729 | return 0; |
2a987ee8 | 730 | } |
4a72ff34 LP |
731 | |
732 | char *strstrip(char *s) { | |
733 | char *e, *l = NULL; | |
734 | ||
735 | /* Drops trailing whitespace. Modifies the string in | |
736 | * place. Returns pointer to first non-space character */ | |
737 | ||
738 | s += strspn(s, WHITESPACE); | |
739 | ||
740 | for (e = s; *e; e++) | |
741 | if (!strchr(WHITESPACE, *e)) | |
742 | l = e; | |
743 | ||
744 | if (l) | |
745 | *(l+1) = 0; | |
746 | else | |
747 | *s = 0; | |
748 | ||
749 | return s; | |
4a72ff34 LP |
750 | } |
751 | ||
ee9b5e01 LP |
752 | char *delete_chars(char *s, const char *bad) { |
753 | char *f, *t; | |
754 | ||
755 | /* Drops all whitespace, regardless where in the string */ | |
756 | ||
757 | for (f = s, t = s; *f; f++) { | |
758 | if (strchr(bad, *f)) | |
759 | continue; | |
760 | ||
761 | *(t++) = *f; | |
762 | } | |
763 | ||
764 | *t = 0; | |
765 | ||
766 | return s; | |
767 | } | |
768 | ||
4a72ff34 LP |
769 | char *file_in_same_dir(const char *path, const char *filename) { |
770 | char *e, *r; | |
771 | size_t k; | |
772 | ||
773 | assert(path); | |
774 | assert(filename); | |
775 | ||
776 | /* This removes the last component of path and appends | |
777 | * filename, unless the latter is absolute anyway or the | |
778 | * former isn't */ | |
779 | ||
780 | if (path_is_absolute(filename)) | |
781 | return strdup(filename); | |
782 | ||
783 | if (!(e = strrchr(path, '/'))) | |
784 | return strdup(filename); | |
785 | ||
786 | k = strlen(filename); | |
787 | if (!(r = new(char, e-path+1+k+1))) | |
788 | return NULL; | |
789 | ||
790 | memcpy(r, path, e-path+1); | |
791 | memcpy(r+(e-path)+1, filename, k+1); | |
792 | ||
793 | return r; | |
794 | } | |
fb624d04 | 795 | |
a9f5d454 LP |
796 | int mkdir_parents(const char *path, mode_t mode) { |
797 | const char *p, *e; | |
798 | ||
799 | assert(path); | |
800 | ||
801 | /* Creates every parent directory in the path except the last | |
802 | * component. */ | |
803 | ||
804 | p = path + strspn(path, "/"); | |
805 | for (;;) { | |
806 | int r; | |
807 | char *t; | |
808 | ||
809 | e = p + strcspn(p, "/"); | |
810 | p = e + strspn(e, "/"); | |
811 | ||
812 | /* Is this the last component? If so, then we're | |
813 | * done */ | |
814 | if (*p == 0) | |
815 | return 0; | |
816 | ||
817 | if (!(t = strndup(path, e - path))) | |
818 | return -ENOMEM; | |
819 | ||
820 | r = mkdir(t, mode); | |
821 | ||
822 | free(t); | |
823 | ||
824 | if (r < 0 && errno != EEXIST) | |
825 | return -errno; | |
826 | } | |
827 | } | |
828 | ||
bbd67135 LP |
829 | int mkdir_p(const char *path, mode_t mode) { |
830 | int r; | |
831 | ||
832 | /* Like mkdir -p */ | |
833 | ||
834 | if ((r = mkdir_parents(path, mode)) < 0) | |
835 | return r; | |
836 | ||
837 | if (mkdir(path, mode) < 0) | |
838 | return -errno; | |
839 | ||
840 | return 0; | |
841 | } | |
842 | ||
fb624d04 LP |
843 | char hexchar(int x) { |
844 | static const char table[16] = "0123456789abcdef"; | |
845 | ||
846 | return table[x & 15]; | |
847 | } | |
4fe88d28 LP |
848 | |
849 | int unhexchar(char c) { | |
850 | ||
851 | if (c >= '0' && c <= '9') | |
852 | return c - '0'; | |
853 | ||
854 | if (c >= 'a' && c <= 'f') | |
ea430986 | 855 | return c - 'a' + 10; |
4fe88d28 LP |
856 | |
857 | if (c >= 'A' && c <= 'F') | |
ea430986 | 858 | return c - 'A' + 10; |
4fe88d28 LP |
859 | |
860 | return -1; | |
861 | } | |
862 | ||
863 | char octchar(int x) { | |
864 | return '0' + (x & 7); | |
865 | } | |
866 | ||
867 | int unoctchar(char c) { | |
868 | ||
869 | if (c >= '0' && c <= '7') | |
870 | return c - '0'; | |
871 | ||
872 | return -1; | |
873 | } | |
874 | ||
5af98f82 LP |
875 | char decchar(int x) { |
876 | return '0' + (x % 10); | |
877 | } | |
878 | ||
879 | int undecchar(char c) { | |
880 | ||
881 | if (c >= '0' && c <= '9') | |
882 | return c - '0'; | |
883 | ||
884 | return -1; | |
885 | } | |
886 | ||
4fe88d28 LP |
887 | char *cescape(const char *s) { |
888 | char *r, *t; | |
889 | const char *f; | |
890 | ||
891 | assert(s); | |
892 | ||
893 | /* Does C style string escaping. */ | |
894 | ||
895 | if (!(r = new(char, strlen(s)*4 + 1))) | |
896 | return NULL; | |
897 | ||
898 | for (f = s, t = r; *f; f++) | |
899 | ||
900 | switch (*f) { | |
901 | ||
902 | case '\a': | |
903 | *(t++) = '\\'; | |
904 | *(t++) = 'a'; | |
905 | break; | |
906 | case '\b': | |
907 | *(t++) = '\\'; | |
908 | *(t++) = 'b'; | |
909 | break; | |
910 | case '\f': | |
911 | *(t++) = '\\'; | |
912 | *(t++) = 'f'; | |
913 | break; | |
914 | case '\n': | |
915 | *(t++) = '\\'; | |
916 | *(t++) = 'n'; | |
917 | break; | |
918 | case '\r': | |
919 | *(t++) = '\\'; | |
920 | *(t++) = 'r'; | |
921 | break; | |
922 | case '\t': | |
923 | *(t++) = '\\'; | |
924 | *(t++) = 't'; | |
925 | break; | |
926 | case '\v': | |
927 | *(t++) = '\\'; | |
928 | *(t++) = 'v'; | |
929 | break; | |
930 | case '\\': | |
931 | *(t++) = '\\'; | |
932 | *(t++) = '\\'; | |
933 | break; | |
934 | case '"': | |
935 | *(t++) = '\\'; | |
936 | *(t++) = '"'; | |
937 | break; | |
938 | case '\'': | |
939 | *(t++) = '\\'; | |
940 | *(t++) = '\''; | |
941 | break; | |
942 | ||
943 | default: | |
944 | /* For special chars we prefer octal over | |
945 | * hexadecimal encoding, simply because glib's | |
946 | * g_strescape() does the same */ | |
947 | if ((*f < ' ') || (*f >= 127)) { | |
948 | *(t++) = '\\'; | |
949 | *(t++) = octchar((unsigned char) *f >> 6); | |
950 | *(t++) = octchar((unsigned char) *f >> 3); | |
951 | *(t++) = octchar((unsigned char) *f); | |
952 | } else | |
953 | *(t++) = *f; | |
954 | break; | |
955 | } | |
956 | ||
957 | *t = 0; | |
958 | ||
959 | return r; | |
960 | } | |
961 | ||
962 | char *cunescape(const char *s) { | |
963 | char *r, *t; | |
964 | const char *f; | |
965 | ||
966 | assert(s); | |
967 | ||
968 | /* Undoes C style string escaping */ | |
969 | ||
970 | if (!(r = new(char, strlen(s)+1))) | |
971 | return r; | |
972 | ||
973 | for (f = s, t = r; *f; f++) { | |
974 | ||
975 | if (*f != '\\') { | |
976 | *(t++) = *f; | |
977 | continue; | |
978 | } | |
979 | ||
980 | f++; | |
981 | ||
982 | switch (*f) { | |
983 | ||
984 | case 'a': | |
985 | *(t++) = '\a'; | |
986 | break; | |
987 | case 'b': | |
988 | *(t++) = '\b'; | |
989 | break; | |
990 | case 'f': | |
991 | *(t++) = '\f'; | |
992 | break; | |
993 | case 'n': | |
994 | *(t++) = '\n'; | |
995 | break; | |
996 | case 'r': | |
997 | *(t++) = '\r'; | |
998 | break; | |
999 | case 't': | |
1000 | *(t++) = '\t'; | |
1001 | break; | |
1002 | case 'v': | |
1003 | *(t++) = '\v'; | |
1004 | break; | |
1005 | case '\\': | |
1006 | *(t++) = '\\'; | |
1007 | break; | |
1008 | case '"': | |
1009 | *(t++) = '"'; | |
1010 | break; | |
1011 | case '\'': | |
1012 | *(t++) = '\''; | |
1013 | break; | |
1014 | ||
1015 | case 'x': { | |
1016 | /* hexadecimal encoding */ | |
1017 | int a, b; | |
1018 | ||
1019 | if ((a = unhexchar(f[1])) < 0 || | |
1020 | (b = unhexchar(f[2])) < 0) { | |
1021 | /* Invalid escape code, let's take it literal then */ | |
1022 | *(t++) = '\\'; | |
1023 | *(t++) = 'x'; | |
1024 | } else { | |
1025 | *(t++) = (char) ((a << 4) | b); | |
1026 | f += 2; | |
1027 | } | |
1028 | ||
1029 | break; | |
1030 | } | |
1031 | ||
1032 | case '0': | |
1033 | case '1': | |
1034 | case '2': | |
1035 | case '3': | |
1036 | case '4': | |
1037 | case '5': | |
1038 | case '6': | |
1039 | case '7': { | |
1040 | /* octal encoding */ | |
1041 | int a, b, c; | |
1042 | ||
1043 | if ((a = unoctchar(f[0])) < 0 || | |
1044 | (b = unoctchar(f[1])) < 0 || | |
1045 | (c = unoctchar(f[2])) < 0) { | |
1046 | /* Invalid escape code, let's take it literal then */ | |
1047 | *(t++) = '\\'; | |
1048 | *(t++) = f[0]; | |
1049 | } else { | |
1050 | *(t++) = (char) ((a << 6) | (b << 3) | c); | |
1051 | f += 2; | |
1052 | } | |
1053 | ||
1054 | break; | |
1055 | } | |
1056 | ||
1057 | case 0: | |
1058 | /* premature end of string.*/ | |
1059 | *(t++) = '\\'; | |
1060 | goto finish; | |
1061 | ||
1062 | default: | |
1063 | /* Invalid escape code, let's take it literal then */ | |
1064 | *(t++) = '\\'; | |
1065 | *(t++) = 'f'; | |
1066 | break; | |
1067 | } | |
1068 | } | |
1069 | ||
1070 | finish: | |
1071 | *t = 0; | |
1072 | return r; | |
1073 | } | |
1074 | ||
1075 | ||
1076 | char *xescape(const char *s, const char *bad) { | |
1077 | char *r, *t; | |
1078 | const char *f; | |
1079 | ||
1080 | /* Escapes all chars in bad, in addition to \ and all special | |
1081 | * chars, in \xFF style escaping. May be reversed with | |
1082 | * cunescape. */ | |
1083 | ||
1084 | if (!(r = new(char, strlen(s)*4+1))) | |
1085 | return NULL; | |
1086 | ||
1087 | for (f = s, t = r; *f; f++) { | |
1088 | ||
b866264a LP |
1089 | if ((*f < ' ') || (*f >= 127) || |
1090 | (*f == '\\') || strchr(bad, *f)) { | |
4fe88d28 LP |
1091 | *(t++) = '\\'; |
1092 | *(t++) = 'x'; | |
1093 | *(t++) = hexchar(*f >> 4); | |
1094 | *(t++) = hexchar(*f); | |
1095 | } else | |
1096 | *(t++) = *f; | |
1097 | } | |
1098 | ||
1099 | *t = 0; | |
1100 | ||
1101 | return r; | |
1102 | } | |
1103 | ||
ea430986 | 1104 | char *bus_path_escape(const char *s) { |
ea430986 LP |
1105 | char *r, *t; |
1106 | const char *f; | |
1107 | ||
47be870b LP |
1108 | assert(s); |
1109 | ||
ea430986 LP |
1110 | /* Escapes all chars that D-Bus' object path cannot deal |
1111 | * with. Can be reverse with bus_path_unescape() */ | |
1112 | ||
1113 | if (!(r = new(char, strlen(s)*3+1))) | |
1114 | return NULL; | |
1115 | ||
1116 | for (f = s, t = r; *f; f++) { | |
1117 | ||
1118 | if (!(*f >= 'A' && *f <= 'Z') && | |
1119 | !(*f >= 'a' && *f <= 'z') && | |
1120 | !(*f >= '0' && *f <= '9')) { | |
1121 | *(t++) = '_'; | |
1122 | *(t++) = hexchar(*f >> 4); | |
1123 | *(t++) = hexchar(*f); | |
1124 | } else | |
1125 | *(t++) = *f; | |
1126 | } | |
1127 | ||
1128 | *t = 0; | |
1129 | ||
1130 | return r; | |
1131 | } | |
1132 | ||
9e2f7c11 | 1133 | char *bus_path_unescape(const char *f) { |
ea430986 | 1134 | char *r, *t; |
ea430986 | 1135 | |
9e2f7c11 | 1136 | assert(f); |
47be870b | 1137 | |
9e2f7c11 | 1138 | if (!(r = strdup(f))) |
ea430986 LP |
1139 | return NULL; |
1140 | ||
9e2f7c11 | 1141 | for (t = r; *f; f++) { |
ea430986 LP |
1142 | |
1143 | if (*f == '_') { | |
1144 | int a, b; | |
1145 | ||
1146 | if ((a = unhexchar(f[1])) < 0 || | |
1147 | (b = unhexchar(f[2])) < 0) { | |
1148 | /* Invalid escape code, let's take it literal then */ | |
1149 | *(t++) = '_'; | |
1150 | } else { | |
1151 | *(t++) = (char) ((a << 4) | b); | |
1152 | f += 2; | |
1153 | } | |
1154 | } else | |
1155 | *(t++) = *f; | |
1156 | } | |
1157 | ||
1158 | *t = 0; | |
1159 | ||
1160 | return r; | |
1161 | } | |
1162 | ||
4fe88d28 LP |
1163 | char *path_kill_slashes(char *path) { |
1164 | char *f, *t; | |
1165 | bool slash = false; | |
1166 | ||
1167 | /* Removes redundant inner and trailing slashes. Modifies the | |
1168 | * passed string in-place. | |
1169 | * | |
1170 | * ///foo///bar/ becomes /foo/bar | |
1171 | */ | |
1172 | ||
1173 | for (f = path, t = path; *f; f++) { | |
1174 | ||
1175 | if (*f == '/') { | |
1176 | slash = true; | |
1177 | continue; | |
1178 | } | |
1179 | ||
1180 | if (slash) { | |
1181 | slash = false; | |
1182 | *(t++) = '/'; | |
1183 | } | |
1184 | ||
1185 | *(t++) = *f; | |
1186 | } | |
1187 | ||
1188 | /* Special rule, if we are talking of the root directory, a | |
1189 | trailing slash is good */ | |
1190 | ||
1191 | if (t == path && slash) | |
1192 | *(t++) = '/'; | |
1193 | ||
1194 | *t = 0; | |
1195 | return path; | |
1196 | } | |
1197 | ||
1198 | bool path_startswith(const char *path, const char *prefix) { | |
1199 | assert(path); | |
1200 | assert(prefix); | |
1201 | ||
1202 | if ((path[0] == '/') != (prefix[0] == '/')) | |
1203 | return false; | |
1204 | ||
1205 | for (;;) { | |
1206 | size_t a, b; | |
1207 | ||
1208 | path += strspn(path, "/"); | |
1209 | prefix += strspn(prefix, "/"); | |
1210 | ||
1211 | if (*prefix == 0) | |
1212 | return true; | |
1213 | ||
1214 | if (*path == 0) | |
1215 | return false; | |
1216 | ||
1217 | a = strcspn(path, "/"); | |
1218 | b = strcspn(prefix, "/"); | |
1219 | ||
1220 | if (a != b) | |
1221 | return false; | |
1222 | ||
1223 | if (memcmp(path, prefix, a) != 0) | |
1224 | return false; | |
1225 | ||
1226 | path += a; | |
1227 | prefix += b; | |
1228 | } | |
1229 | } | |
1230 | ||
15ae422b LP |
1231 | bool path_equal(const char *a, const char *b) { |
1232 | assert(a); | |
1233 | assert(b); | |
1234 | ||
1235 | if ((a[0] == '/') != (b[0] == '/')) | |
1236 | return false; | |
1237 | ||
1238 | for (;;) { | |
1239 | size_t j, k; | |
1240 | ||
1241 | a += strspn(a, "/"); | |
1242 | b += strspn(b, "/"); | |
1243 | ||
1244 | if (*a == 0 && *b == 0) | |
1245 | return true; | |
1246 | ||
1247 | if (*a == 0 || *b == 0) | |
1248 | return false; | |
1249 | ||
1250 | j = strcspn(a, "/"); | |
1251 | k = strcspn(b, "/"); | |
1252 | ||
1253 | if (j != k) | |
1254 | return false; | |
1255 | ||
1256 | if (memcmp(a, b, j) != 0) | |
1257 | return false; | |
1258 | ||
1259 | a += j; | |
1260 | b += k; | |
1261 | } | |
1262 | } | |
1263 | ||
67d51650 | 1264 | char *ascii_strlower(char *t) { |
4fe88d28 LP |
1265 | char *p; |
1266 | ||
67d51650 | 1267 | assert(t); |
4fe88d28 | 1268 | |
67d51650 | 1269 | for (p = t; *p; p++) |
4fe88d28 LP |
1270 | if (*p >= 'A' && *p <= 'Z') |
1271 | *p = *p - 'A' + 'a'; | |
1272 | ||
67d51650 | 1273 | return t; |
4fe88d28 | 1274 | } |
1dccbe19 | 1275 | |
c85dc17b LP |
1276 | bool ignore_file(const char *filename) { |
1277 | assert(filename); | |
1278 | ||
1279 | return | |
1280 | filename[0] == '.' || | |
6c78be3c | 1281 | streq(filename, "lost+found") || |
c85dc17b LP |
1282 | endswith(filename, "~") || |
1283 | endswith(filename, ".rpmnew") || | |
1284 | endswith(filename, ".rpmsave") || | |
1285 | endswith(filename, ".rpmorig") || | |
1286 | endswith(filename, ".dpkg-old") || | |
1287 | endswith(filename, ".dpkg-new") || | |
1288 | endswith(filename, ".swp"); | |
1289 | } | |
1290 | ||
3a0ecb08 LP |
1291 | int fd_nonblock(int fd, bool nonblock) { |
1292 | int flags; | |
1293 | ||
1294 | assert(fd >= 0); | |
1295 | ||
1296 | if ((flags = fcntl(fd, F_GETFL, 0)) < 0) | |
1297 | return -errno; | |
1298 | ||
1299 | if (nonblock) | |
1300 | flags |= O_NONBLOCK; | |
1301 | else | |
1302 | flags &= ~O_NONBLOCK; | |
1303 | ||
1304 | if (fcntl(fd, F_SETFL, flags) < 0) | |
1305 | return -errno; | |
1306 | ||
1307 | return 0; | |
1308 | } | |
1309 | ||
1310 | int fd_cloexec(int fd, bool cloexec) { | |
1311 | int flags; | |
1312 | ||
1313 | assert(fd >= 0); | |
1314 | ||
1315 | if ((flags = fcntl(fd, F_GETFD, 0)) < 0) | |
1316 | return -errno; | |
1317 | ||
1318 | if (cloexec) | |
1319 | flags |= FD_CLOEXEC; | |
1320 | else | |
1321 | flags &= ~FD_CLOEXEC; | |
1322 | ||
1323 | if (fcntl(fd, F_SETFD, flags) < 0) | |
1324 | return -errno; | |
1325 | ||
1326 | return 0; | |
1327 | } | |
1328 | ||
a0d40ac5 LP |
1329 | int close_all_fds(const int except[], unsigned n_except) { |
1330 | DIR *d; | |
1331 | struct dirent *de; | |
1332 | int r = 0; | |
1333 | ||
1334 | if (!(d = opendir("/proc/self/fd"))) | |
1335 | return -errno; | |
1336 | ||
1337 | while ((de = readdir(d))) { | |
a7610064 | 1338 | int fd = -1; |
a0d40ac5 | 1339 | |
a16e1123 | 1340 | if (ignore_file(de->d_name)) |
a0d40ac5 LP |
1341 | continue; |
1342 | ||
1343 | if ((r = safe_atoi(de->d_name, &fd)) < 0) | |
1344 | goto finish; | |
1345 | ||
1346 | if (fd < 3) | |
1347 | continue; | |
1348 | ||
1349 | if (fd == dirfd(d)) | |
1350 | continue; | |
1351 | ||
1352 | if (except) { | |
1353 | bool found; | |
1354 | unsigned i; | |
1355 | ||
1356 | found = false; | |
1357 | for (i = 0; i < n_except; i++) | |
1358 | if (except[i] == fd) { | |
1359 | found = true; | |
1360 | break; | |
1361 | } | |
1362 | ||
1363 | if (found) | |
1364 | continue; | |
1365 | } | |
1366 | ||
2f357920 LP |
1367 | if ((r = close_nointr(fd)) < 0) { |
1368 | /* Valgrind has its own FD and doesn't want to have it closed */ | |
1369 | if (errno != EBADF) | |
1370 | goto finish; | |
1371 | } | |
a0d40ac5 LP |
1372 | } |
1373 | ||
2f357920 LP |
1374 | r = 0; |
1375 | ||
a0d40ac5 LP |
1376 | finish: |
1377 | closedir(d); | |
1378 | return r; | |
1379 | } | |
1380 | ||
db12775d LP |
1381 | bool chars_intersect(const char *a, const char *b) { |
1382 | const char *p; | |
1383 | ||
1384 | /* Returns true if any of the chars in a are in b. */ | |
1385 | for (p = a; *p; p++) | |
1386 | if (strchr(b, *p)) | |
1387 | return true; | |
1388 | ||
1389 | return false; | |
1390 | } | |
1391 | ||
8b6c7120 LP |
1392 | char *format_timestamp(char *buf, size_t l, usec_t t) { |
1393 | struct tm tm; | |
1394 | time_t sec; | |
1395 | ||
1396 | assert(buf); | |
1397 | assert(l > 0); | |
1398 | ||
1399 | if (t <= 0) | |
1400 | return NULL; | |
1401 | ||
1402 | sec = (time_t) t / USEC_PER_SEC; | |
1403 | ||
1404 | if (strftime(buf, l, "%a, %d %b %Y %H:%M:%S %z", localtime_r(&sec, &tm)) <= 0) | |
1405 | return NULL; | |
1406 | ||
1407 | return buf; | |
1408 | } | |
1409 | ||
871d7de4 LP |
1410 | char *format_timespan(char *buf, size_t l, usec_t t) { |
1411 | static const struct { | |
1412 | const char *suffix; | |
1413 | usec_t usec; | |
1414 | } table[] = { | |
1415 | { "w", USEC_PER_WEEK }, | |
1416 | { "d", USEC_PER_DAY }, | |
1417 | { "h", USEC_PER_HOUR }, | |
1418 | { "min", USEC_PER_MINUTE }, | |
1419 | { "s", USEC_PER_SEC }, | |
1420 | { "ms", USEC_PER_MSEC }, | |
1421 | { "us", 1 }, | |
1422 | }; | |
1423 | ||
1424 | unsigned i; | |
1425 | char *p = buf; | |
1426 | ||
1427 | assert(buf); | |
1428 | assert(l > 0); | |
1429 | ||
1430 | if (t == (usec_t) -1) | |
1431 | return NULL; | |
1432 | ||
1433 | /* The result of this function can be parsed with parse_usec */ | |
1434 | ||
1435 | for (i = 0; i < ELEMENTSOF(table); i++) { | |
1436 | int k; | |
1437 | size_t n; | |
1438 | ||
1439 | if (t < table[i].usec) | |
1440 | continue; | |
1441 | ||
1442 | if (l <= 1) | |
1443 | break; | |
1444 | ||
1445 | k = snprintf(p, l, "%s%llu%s", p > buf ? " " : "", (unsigned long long) (t / table[i].usec), table[i].suffix); | |
1446 | n = MIN((size_t) k, l); | |
1447 | ||
1448 | l -= n; | |
1449 | p += n; | |
1450 | ||
1451 | t %= table[i].usec; | |
1452 | } | |
1453 | ||
1454 | *p = 0; | |
1455 | ||
1456 | return buf; | |
1457 | } | |
1458 | ||
42856c10 LP |
1459 | bool fstype_is_network(const char *fstype) { |
1460 | static const char * const table[] = { | |
1461 | "cifs", | |
1462 | "smbfs", | |
1463 | "ncpfs", | |
1464 | "nfs", | |
ca139f94 LP |
1465 | "nfs4", |
1466 | "gfs", | |
1467 | "gfs2" | |
42856c10 LP |
1468 | }; |
1469 | ||
1470 | unsigned i; | |
1471 | ||
1472 | for (i = 0; i < ELEMENTSOF(table); i++) | |
1473 | if (streq(table[i], fstype)) | |
1474 | return true; | |
1475 | ||
1476 | return false; | |
1477 | } | |
1478 | ||
601f6a1e LP |
1479 | int chvt(int vt) { |
1480 | int fd, r = 0; | |
1481 | ||
1482 | if ((fd = open("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC)) < 0) | |
1483 | return -errno; | |
1484 | ||
1485 | if (vt < 0) { | |
1486 | int tiocl[2] = { | |
1487 | TIOCL_GETKMSGREDIRECT, | |
1488 | 0 | |
1489 | }; | |
1490 | ||
1491 | if (ioctl(fd, TIOCLINUX, tiocl) < 0) | |
1492 | return -errno; | |
1493 | ||
1494 | vt = tiocl[0] <= 0 ? 1 : tiocl[0]; | |
1495 | } | |
1496 | ||
1497 | if (ioctl(fd, VT_ACTIVATE, vt) < 0) | |
1498 | r = -errno; | |
1499 | ||
a16e1123 | 1500 | close_nointr_nofail(r); |
601f6a1e LP |
1501 | return r; |
1502 | } | |
1503 | ||
80876c20 LP |
1504 | int read_one_char(FILE *f, char *ret, bool *need_nl) { |
1505 | struct termios old_termios, new_termios; | |
1506 | char c; | |
1507 | char line[1024]; | |
1508 | ||
1509 | assert(f); | |
1510 | assert(ret); | |
1511 | ||
1512 | if (tcgetattr(fileno(f), &old_termios) >= 0) { | |
1513 | new_termios = old_termios; | |
1514 | ||
1515 | new_termios.c_lflag &= ~ICANON; | |
1516 | new_termios.c_cc[VMIN] = 1; | |
1517 | new_termios.c_cc[VTIME] = 0; | |
1518 | ||
1519 | if (tcsetattr(fileno(f), TCSADRAIN, &new_termios) >= 0) { | |
1520 | size_t k; | |
1521 | ||
1522 | k = fread(&c, 1, 1, f); | |
1523 | ||
1524 | tcsetattr(fileno(f), TCSADRAIN, &old_termios); | |
1525 | ||
1526 | if (k <= 0) | |
1527 | return -EIO; | |
1528 | ||
1529 | if (need_nl) | |
1530 | *need_nl = c != '\n'; | |
1531 | ||
1532 | *ret = c; | |
1533 | return 0; | |
1534 | } | |
1535 | } | |
1536 | ||
1537 | if (!(fgets(line, sizeof(line), f))) | |
1538 | return -EIO; | |
1539 | ||
1540 | truncate_nl(line); | |
1541 | ||
1542 | if (strlen(line) != 1) | |
1543 | return -EBADMSG; | |
1544 | ||
1545 | if (need_nl) | |
1546 | *need_nl = false; | |
1547 | ||
1548 | *ret = line[0]; | |
1549 | return 0; | |
1550 | } | |
1551 | ||
1552 | int ask(char *ret, const char *replies, const char *text, ...) { | |
1553 | assert(ret); | |
1554 | assert(replies); | |
1555 | assert(text); | |
1556 | ||
1557 | for (;;) { | |
1558 | va_list ap; | |
1559 | char c; | |
1560 | int r; | |
1561 | bool need_nl = true; | |
1562 | ||
b1b2dc0c LP |
1563 | fputs("\x1B[1m", stdout); |
1564 | ||
80876c20 LP |
1565 | va_start(ap, text); |
1566 | vprintf(text, ap); | |
1567 | va_end(ap); | |
1568 | ||
b1b2dc0c LP |
1569 | fputs("\x1B[0m", stdout); |
1570 | ||
80876c20 LP |
1571 | fflush(stdout); |
1572 | ||
1573 | if ((r = read_one_char(stdin, &c, &need_nl)) < 0) { | |
1574 | ||
1575 | if (r == -EBADMSG) { | |
1576 | puts("Bad input, please try again."); | |
1577 | continue; | |
1578 | } | |
1579 | ||
1580 | putchar('\n'); | |
1581 | return r; | |
1582 | } | |
1583 | ||
1584 | if (need_nl) | |
1585 | putchar('\n'); | |
1586 | ||
1587 | if (strchr(replies, c)) { | |
1588 | *ret = c; | |
1589 | return 0; | |
1590 | } | |
1591 | ||
1592 | puts("Read unexpected character, please try again."); | |
1593 | } | |
1594 | } | |
1595 | ||
1596 | int reset_terminal(int fd) { | |
1597 | struct termios termios; | |
1598 | int r = 0; | |
1599 | ||
1600 | assert(fd >= 0); | |
1601 | ||
aaf694ca | 1602 | /* Set terminal to some sane defaults */ |
80876c20 LP |
1603 | |
1604 | if (tcgetattr(fd, &termios) < 0) { | |
1605 | r = -errno; | |
1606 | goto finish; | |
1607 | } | |
1608 | ||
aaf694ca LP |
1609 | /* We only reset the stuff that matters to the software. How |
1610 | * hardware is set up we don't touch assuming that somebody | |
1611 | * else will do that for us */ | |
1612 | ||
1613 | termios.c_iflag &= ~(IGNBRK | BRKINT | ISTRIP | INLCR | IGNCR | IUCLC); | |
80876c20 LP |
1614 | termios.c_iflag |= ICRNL | IMAXBEL | IUTF8; |
1615 | termios.c_oflag |= ONLCR; | |
1616 | termios.c_cflag |= CREAD; | |
1617 | termios.c_lflag = ISIG | ICANON | IEXTEN | ECHO | ECHOE | ECHOK | ECHOCTL | ECHOPRT | ECHOKE; | |
1618 | ||
1619 | termios.c_cc[VINTR] = 03; /* ^C */ | |
1620 | termios.c_cc[VQUIT] = 034; /* ^\ */ | |
1621 | termios.c_cc[VERASE] = 0177; | |
1622 | termios.c_cc[VKILL] = 025; /* ^X */ | |
1623 | termios.c_cc[VEOF] = 04; /* ^D */ | |
1624 | termios.c_cc[VSTART] = 021; /* ^Q */ | |
1625 | termios.c_cc[VSTOP] = 023; /* ^S */ | |
1626 | termios.c_cc[VSUSP] = 032; /* ^Z */ | |
1627 | termios.c_cc[VLNEXT] = 026; /* ^V */ | |
1628 | termios.c_cc[VWERASE] = 027; /* ^W */ | |
1629 | termios.c_cc[VREPRINT] = 022; /* ^R */ | |
aaf694ca LP |
1630 | termios.c_cc[VEOL] = 0; |
1631 | termios.c_cc[VEOL2] = 0; | |
80876c20 LP |
1632 | |
1633 | termios.c_cc[VTIME] = 0; | |
1634 | termios.c_cc[VMIN] = 1; | |
1635 | ||
1636 | if (tcsetattr(fd, TCSANOW, &termios) < 0) | |
1637 | r = -errno; | |
1638 | ||
1639 | finish: | |
1640 | /* Just in case, flush all crap out */ | |
1641 | tcflush(fd, TCIOFLUSH); | |
1642 | ||
1643 | return r; | |
1644 | } | |
1645 | ||
1646 | int open_terminal(const char *name, int mode) { | |
1647 | int fd, r; | |
1648 | ||
1649 | if ((fd = open(name, mode)) < 0) | |
1650 | return -errno; | |
1651 | ||
1652 | if ((r = isatty(fd)) < 0) { | |
1653 | close_nointr_nofail(fd); | |
1654 | return -errno; | |
1655 | } | |
1656 | ||
1657 | if (!r) { | |
1658 | close_nointr_nofail(fd); | |
1659 | return -ENOTTY; | |
1660 | } | |
1661 | ||
1662 | return fd; | |
1663 | } | |
1664 | ||
1665 | int flush_fd(int fd) { | |
1666 | struct pollfd pollfd; | |
1667 | ||
1668 | zero(pollfd); | |
1669 | pollfd.fd = fd; | |
1670 | pollfd.events = POLLIN; | |
1671 | ||
1672 | for (;;) { | |
1673 | char buf[1024]; | |
1674 | ssize_t l; | |
1675 | int r; | |
1676 | ||
1677 | if ((r = poll(&pollfd, 1, 0)) < 0) { | |
1678 | ||
1679 | if (errno == EINTR) | |
1680 | continue; | |
1681 | ||
1682 | return -errno; | |
1683 | } | |
1684 | ||
1685 | if (r == 0) | |
1686 | return 0; | |
1687 | ||
1688 | if ((l = read(fd, buf, sizeof(buf))) < 0) { | |
1689 | ||
1690 | if (errno == EINTR) | |
1691 | continue; | |
1692 | ||
1693 | if (errno == EAGAIN) | |
1694 | return 0; | |
1695 | ||
1696 | return -errno; | |
1697 | } | |
1698 | ||
1699 | if (l <= 0) | |
1700 | return 0; | |
1701 | } | |
1702 | } | |
1703 | ||
21de3988 | 1704 | int acquire_terminal(const char *name, bool fail, bool force, bool ignore_tiocstty_eperm) { |
bab45044 | 1705 | int fd = -1, notify = -1, r, wd = -1; |
80876c20 LP |
1706 | |
1707 | assert(name); | |
1708 | ||
1709 | /* We use inotify to be notified when the tty is closed. We | |
1710 | * create the watch before checking if we can actually acquire | |
1711 | * it, so that we don't lose any event. | |
1712 | * | |
1713 | * Note: strictly speaking this actually watches for the | |
1714 | * device being closed, it does *not* really watch whether a | |
1715 | * tty loses its controlling process. However, unless some | |
1716 | * rogue process uses TIOCNOTTY on /dev/tty *after* closing | |
1717 | * its tty otherwise this will not become a problem. As long | |
1718 | * as the administrator makes sure not configure any service | |
1719 | * on the same tty as an untrusted user this should not be a | |
1720 | * problem. (Which he probably should not do anyway.) */ | |
1721 | ||
1722 | if (!fail && !force) { | |
1723 | if ((notify = inotify_init1(IN_CLOEXEC)) < 0) { | |
1724 | r = -errno; | |
1725 | goto fail; | |
1726 | } | |
1727 | ||
1728 | if ((wd = inotify_add_watch(notify, name, IN_CLOSE)) < 0) { | |
1729 | r = -errno; | |
1730 | goto fail; | |
1731 | } | |
1732 | } | |
1733 | ||
1734 | for (;;) { | |
e3d1855b LP |
1735 | if (notify >= 0) |
1736 | if ((r = flush_fd(notify)) < 0) | |
1737 | goto fail; | |
80876c20 LP |
1738 | |
1739 | /* We pass here O_NOCTTY only so that we can check the return | |
1740 | * value TIOCSCTTY and have a reliable way to figure out if we | |
1741 | * successfully became the controlling process of the tty */ | |
1742 | if ((fd = open_terminal(name, O_RDWR|O_NOCTTY)) < 0) | |
1743 | return -errno; | |
1744 | ||
1745 | /* First, try to get the tty */ | |
21de3988 LP |
1746 | r = ioctl(fd, TIOCSCTTY, force); |
1747 | ||
1748 | /* Sometimes it makes sense to ignore TIOCSCTTY | |
1749 | * returning EPERM, i.e. when very likely we already | |
1750 | * are have this controlling terminal. */ | |
1751 | if (r < 0 && errno == EPERM && ignore_tiocstty_eperm) | |
1752 | r = 0; | |
1753 | ||
1754 | if (r < 0 && (force || fail || errno != EPERM)) { | |
80876c20 LP |
1755 | r = -errno; |
1756 | goto fail; | |
1757 | } | |
1758 | ||
1759 | if (r >= 0) | |
1760 | break; | |
1761 | ||
1762 | assert(!fail); | |
1763 | assert(!force); | |
1764 | assert(notify >= 0); | |
1765 | ||
1766 | for (;;) { | |
1767 | struct inotify_event e; | |
1768 | ssize_t l; | |
1769 | ||
1770 | if ((l = read(notify, &e, sizeof(e))) != sizeof(e)) { | |
1771 | ||
1772 | if (l < 0) { | |
1773 | ||
1774 | if (errno == EINTR) | |
1775 | continue; | |
1776 | ||
1777 | r = -errno; | |
1778 | } else | |
1779 | r = -EIO; | |
1780 | ||
1781 | goto fail; | |
1782 | } | |
1783 | ||
1784 | if (e.wd != wd || !(e.mask & IN_CLOSE)) { | |
1785 | r = -errno; | |
1786 | goto fail; | |
1787 | } | |
1788 | ||
1789 | break; | |
1790 | } | |
1791 | ||
1792 | /* We close the tty fd here since if the old session | |
1793 | * ended our handle will be dead. It's important that | |
1794 | * we do this after sleeping, so that we don't enter | |
1795 | * an endless loop. */ | |
1796 | close_nointr_nofail(fd); | |
1797 | } | |
1798 | ||
1799 | if (notify >= 0) | |
a16e1123 | 1800 | close_nointr_nofail(notify); |
80876c20 LP |
1801 | |
1802 | if ((r = reset_terminal(fd)) < 0) | |
1803 | log_warning("Failed to reset terminal: %s", strerror(-r)); | |
1804 | ||
1805 | return fd; | |
1806 | ||
1807 | fail: | |
1808 | if (fd >= 0) | |
a16e1123 | 1809 | close_nointr_nofail(fd); |
80876c20 LP |
1810 | |
1811 | if (notify >= 0) | |
a16e1123 | 1812 | close_nointr_nofail(notify); |
80876c20 LP |
1813 | |
1814 | return r; | |
1815 | } | |
1816 | ||
1817 | int release_terminal(void) { | |
1818 | int r = 0, fd; | |
57cd2192 | 1819 | struct sigaction sa_old, sa_new; |
80876c20 | 1820 | |
57cd2192 | 1821 | if ((fd = open("/dev/tty", O_RDWR|O_NOCTTY|O_NDELAY)) < 0) |
80876c20 LP |
1822 | return -errno; |
1823 | ||
57cd2192 LP |
1824 | /* Temporarily ignore SIGHUP, so that we don't get SIGHUP'ed |
1825 | * by our own TIOCNOTTY */ | |
1826 | ||
1827 | zero(sa_new); | |
1828 | sa_new.sa_handler = SIG_IGN; | |
1829 | sa_new.sa_flags = SA_RESTART; | |
1830 | assert_se(sigaction(SIGHUP, &sa_new, &sa_old) == 0); | |
1831 | ||
80876c20 LP |
1832 | if (ioctl(fd, TIOCNOTTY) < 0) |
1833 | r = -errno; | |
1834 | ||
57cd2192 LP |
1835 | assert_se(sigaction(SIGHUP, &sa_old, NULL) == 0); |
1836 | ||
80876c20 LP |
1837 | close_nointr_nofail(fd); |
1838 | return r; | |
1839 | } | |
1840 | ||
9a34ec5f LP |
1841 | int sigaction_many(const struct sigaction *sa, ...) { |
1842 | va_list ap; | |
1843 | int r = 0, sig; | |
1844 | ||
1845 | va_start(ap, sa); | |
1846 | while ((sig = va_arg(ap, int)) > 0) | |
1847 | if (sigaction(sig, sa, NULL) < 0) | |
1848 | r = -errno; | |
1849 | va_end(ap); | |
1850 | ||
1851 | return r; | |
1852 | } | |
1853 | ||
1854 | int ignore_signals(int sig, ...) { | |
a337c6fc | 1855 | struct sigaction sa; |
9a34ec5f LP |
1856 | va_list ap; |
1857 | int r = 0; | |
a337c6fc LP |
1858 | |
1859 | zero(sa); | |
1860 | sa.sa_handler = SIG_IGN; | |
1861 | sa.sa_flags = SA_RESTART; | |
1862 | ||
9a34ec5f LP |
1863 | if (sigaction(sig, &sa, NULL) < 0) |
1864 | r = -errno; | |
1865 | ||
1866 | va_start(ap, sig); | |
1867 | while ((sig = va_arg(ap, int)) > 0) | |
1868 | if (sigaction(sig, &sa, NULL) < 0) | |
1869 | r = -errno; | |
1870 | va_end(ap); | |
1871 | ||
1872 | return r; | |
1873 | } | |
1874 | ||
1875 | int default_signals(int sig, ...) { | |
1876 | struct sigaction sa; | |
1877 | va_list ap; | |
1878 | int r = 0; | |
1879 | ||
1880 | zero(sa); | |
1881 | sa.sa_handler = SIG_DFL; | |
1882 | sa.sa_flags = SA_RESTART; | |
1883 | ||
1884 | if (sigaction(sig, &sa, NULL) < 0) | |
1885 | r = -errno; | |
1886 | ||
1887 | va_start(ap, sig); | |
1888 | while ((sig = va_arg(ap, int)) > 0) | |
1889 | if (sigaction(sig, &sa, NULL) < 0) | |
1890 | r = -errno; | |
1891 | va_end(ap); | |
1892 | ||
1893 | return r; | |
a337c6fc LP |
1894 | } |
1895 | ||
8d567588 LP |
1896 | int close_pipe(int p[]) { |
1897 | int a = 0, b = 0; | |
1898 | ||
1899 | assert(p); | |
1900 | ||
1901 | if (p[0] >= 0) { | |
1902 | a = close_nointr(p[0]); | |
1903 | p[0] = -1; | |
1904 | } | |
1905 | ||
1906 | if (p[1] >= 0) { | |
1907 | b = close_nointr(p[1]); | |
1908 | p[1] = -1; | |
1909 | } | |
1910 | ||
1911 | return a < 0 ? a : b; | |
1912 | } | |
1913 | ||
1914 | ssize_t loop_read(int fd, void *buf, size_t nbytes) { | |
1915 | uint8_t *p; | |
1916 | ssize_t n = 0; | |
1917 | ||
1918 | assert(fd >= 0); | |
1919 | assert(buf); | |
1920 | ||
1921 | p = buf; | |
1922 | ||
1923 | while (nbytes > 0) { | |
1924 | ssize_t k; | |
1925 | ||
1926 | if ((k = read(fd, p, nbytes)) <= 0) { | |
1927 | ||
1928 | if (errno == EINTR) | |
1929 | continue; | |
1930 | ||
1931 | if (errno == EAGAIN) { | |
1932 | struct pollfd pollfd; | |
1933 | ||
1934 | zero(pollfd); | |
1935 | pollfd.fd = fd; | |
1936 | pollfd.events = POLLIN; | |
1937 | ||
1938 | if (poll(&pollfd, 1, -1) < 0) { | |
1939 | if (errno == EINTR) | |
1940 | continue; | |
1941 | ||
1942 | return n > 0 ? n : -errno; | |
1943 | } | |
1944 | ||
1945 | if (pollfd.revents != POLLIN) | |
1946 | return n > 0 ? n : -EIO; | |
1947 | ||
1948 | continue; | |
1949 | } | |
1950 | ||
1951 | return n > 0 ? n : (k < 0 ? -errno : 0); | |
1952 | } | |
1953 | ||
1954 | p += k; | |
1955 | nbytes -= k; | |
1956 | n += k; | |
1957 | } | |
1958 | ||
1959 | return n; | |
1960 | } | |
1961 | ||
1962 | int path_is_mount_point(const char *t) { | |
1963 | struct stat a, b; | |
1964 | char *copy; | |
1965 | ||
1966 | if (lstat(t, &a) < 0) { | |
1967 | ||
1968 | if (errno == ENOENT) | |
1969 | return 0; | |
1970 | ||
1971 | return -errno; | |
1972 | } | |
1973 | ||
1974 | if (!(copy = strdup(t))) | |
1975 | return -ENOMEM; | |
1976 | ||
1977 | if (lstat(dirname(copy), &b) < 0) { | |
1978 | free(copy); | |
1979 | return -errno; | |
1980 | } | |
1981 | ||
1982 | free(copy); | |
1983 | ||
1984 | return a.st_dev != b.st_dev; | |
1985 | } | |
1986 | ||
24a6e4a4 LP |
1987 | int parse_usec(const char *t, usec_t *usec) { |
1988 | static const struct { | |
1989 | const char *suffix; | |
1990 | usec_t usec; | |
1991 | } table[] = { | |
1992 | { "sec", USEC_PER_SEC }, | |
1993 | { "s", USEC_PER_SEC }, | |
1994 | { "min", USEC_PER_MINUTE }, | |
1995 | { "hr", USEC_PER_HOUR }, | |
1996 | { "h", USEC_PER_HOUR }, | |
1997 | { "d", USEC_PER_DAY }, | |
1998 | { "w", USEC_PER_WEEK }, | |
1999 | { "msec", USEC_PER_MSEC }, | |
2000 | { "ms", USEC_PER_MSEC }, | |
2001 | { "m", USEC_PER_MINUTE }, | |
2002 | { "usec", 1ULL }, | |
2003 | { "us", 1ULL }, | |
2004 | { "", USEC_PER_SEC }, | |
2005 | }; | |
2006 | ||
2007 | const char *p; | |
2008 | usec_t r = 0; | |
2009 | ||
2010 | assert(t); | |
2011 | assert(usec); | |
2012 | ||
2013 | p = t; | |
2014 | do { | |
2015 | long long l; | |
2016 | char *e; | |
2017 | unsigned i; | |
2018 | ||
2019 | errno = 0; | |
2020 | l = strtoll(p, &e, 10); | |
2021 | ||
2022 | if (errno != 0) | |
2023 | return -errno; | |
2024 | ||
2025 | if (l < 0) | |
2026 | return -ERANGE; | |
2027 | ||
2028 | if (e == p) | |
2029 | return -EINVAL; | |
2030 | ||
2031 | e += strspn(e, WHITESPACE); | |
2032 | ||
2033 | for (i = 0; i < ELEMENTSOF(table); i++) | |
2034 | if (startswith(e, table[i].suffix)) { | |
2035 | r += (usec_t) l * table[i].usec; | |
2036 | p = e + strlen(table[i].suffix); | |
2037 | break; | |
2038 | } | |
2039 | ||
2040 | if (i >= ELEMENTSOF(table)) | |
2041 | return -EINVAL; | |
2042 | ||
2043 | } while (*p != 0); | |
2044 | ||
2045 | *usec = r; | |
2046 | ||
2047 | return 0; | |
2048 | } | |
2049 | ||
843d2643 LP |
2050 | int make_stdio(int fd) { |
2051 | int r, s, t; | |
2052 | ||
2053 | assert(fd >= 0); | |
2054 | ||
2055 | r = dup2(fd, STDIN_FILENO); | |
2056 | s = dup2(fd, STDOUT_FILENO); | |
2057 | t = dup2(fd, STDERR_FILENO); | |
2058 | ||
2059 | if (fd >= 3) | |
2060 | close_nointr_nofail(fd); | |
2061 | ||
2062 | if (r < 0 || s < 0 || t < 0) | |
2063 | return -errno; | |
2064 | ||
2065 | return 0; | |
2066 | } | |
2067 | ||
cb8a8f78 LP |
2068 | bool is_clean_exit(int code, int status) { |
2069 | ||
2070 | if (code == CLD_EXITED) | |
2071 | return status == 0; | |
2072 | ||
2073 | /* If a daemon does not implement handlers for some of the | |
2074 | * signals that's not considered an unclean shutdown */ | |
2075 | if (code == CLD_KILLED) | |
2076 | return | |
2077 | status == SIGHUP || | |
2078 | status == SIGINT || | |
2079 | status == SIGTERM || | |
2080 | status == SIGPIPE; | |
2081 | ||
2082 | return false; | |
2083 | } | |
2084 | ||
8407a5d0 LP |
2085 | bool is_device_path(const char *path) { |
2086 | ||
2087 | /* Returns true on paths that refer to a device, either in | |
2088 | * sysfs or in /dev */ | |
2089 | ||
2090 | return | |
2091 | path_startswith(path, "/dev/") || | |
2092 | path_startswith(path, "/sys/"); | |
2093 | } | |
2094 | ||
01f78473 LP |
2095 | int dir_is_empty(const char *path) { |
2096 | DIR *d; | |
2097 | int r; | |
2098 | struct dirent buf, *de; | |
2099 | ||
2100 | if (!(d = opendir(path))) | |
2101 | return -errno; | |
2102 | ||
2103 | for (;;) { | |
2104 | if ((r = readdir_r(d, &buf, &de)) > 0) { | |
2105 | r = -r; | |
2106 | break; | |
2107 | } | |
2108 | ||
2109 | if (!de) { | |
2110 | r = 1; | |
2111 | break; | |
2112 | } | |
2113 | ||
2114 | if (!ignore_file(de->d_name)) { | |
2115 | r = 0; | |
2116 | break; | |
2117 | } | |
2118 | } | |
2119 | ||
2120 | closedir(d); | |
2121 | return r; | |
2122 | } | |
2123 | ||
1dccbe19 LP |
2124 | static const char *const ioprio_class_table[] = { |
2125 | [IOPRIO_CLASS_NONE] = "none", | |
2126 | [IOPRIO_CLASS_RT] = "realtime", | |
2127 | [IOPRIO_CLASS_BE] = "best-effort", | |
2128 | [IOPRIO_CLASS_IDLE] = "idle" | |
2129 | }; | |
2130 | ||
2131 | DEFINE_STRING_TABLE_LOOKUP(ioprio_class, int); | |
2132 | ||
2133 | static const char *const sigchld_code_table[] = { | |
2134 | [CLD_EXITED] = "exited", | |
2135 | [CLD_KILLED] = "killed", | |
2136 | [CLD_DUMPED] = "dumped", | |
2137 | [CLD_TRAPPED] = "trapped", | |
2138 | [CLD_STOPPED] = "stopped", | |
2139 | [CLD_CONTINUED] = "continued", | |
2140 | }; | |
2141 | ||
2142 | DEFINE_STRING_TABLE_LOOKUP(sigchld_code, int); | |
2143 | ||
2144 | static const char *const log_facility_table[LOG_NFACILITIES] = { | |
2145 | [LOG_FAC(LOG_KERN)] = "kern", | |
2146 | [LOG_FAC(LOG_USER)] = "user", | |
2147 | [LOG_FAC(LOG_MAIL)] = "mail", | |
2148 | [LOG_FAC(LOG_DAEMON)] = "daemon", | |
2149 | [LOG_FAC(LOG_AUTH)] = "auth", | |
2150 | [LOG_FAC(LOG_SYSLOG)] = "syslog", | |
2151 | [LOG_FAC(LOG_LPR)] = "lpr", | |
2152 | [LOG_FAC(LOG_NEWS)] = "news", | |
2153 | [LOG_FAC(LOG_UUCP)] = "uucp", | |
2154 | [LOG_FAC(LOG_CRON)] = "cron", | |
2155 | [LOG_FAC(LOG_AUTHPRIV)] = "authpriv", | |
2156 | [LOG_FAC(LOG_FTP)] = "ftp", | |
2157 | [LOG_FAC(LOG_LOCAL0)] = "local0", | |
2158 | [LOG_FAC(LOG_LOCAL1)] = "local1", | |
2159 | [LOG_FAC(LOG_LOCAL2)] = "local2", | |
2160 | [LOG_FAC(LOG_LOCAL3)] = "local3", | |
2161 | [LOG_FAC(LOG_LOCAL4)] = "local4", | |
2162 | [LOG_FAC(LOG_LOCAL5)] = "local5", | |
2163 | [LOG_FAC(LOG_LOCAL6)] = "local6", | |
2164 | [LOG_FAC(LOG_LOCAL7)] = "local7" | |
2165 | }; | |
2166 | ||
2167 | DEFINE_STRING_TABLE_LOOKUP(log_facility, int); | |
2168 | ||
2169 | static const char *const log_level_table[] = { | |
2170 | [LOG_EMERG] = "emerg", | |
2171 | [LOG_ALERT] = "alert", | |
2172 | [LOG_CRIT] = "crit", | |
2173 | [LOG_ERR] = "err", | |
2174 | [LOG_WARNING] = "warning", | |
2175 | [LOG_NOTICE] = "notice", | |
2176 | [LOG_INFO] = "info", | |
2177 | [LOG_DEBUG] = "debug" | |
2178 | }; | |
2179 | ||
2180 | DEFINE_STRING_TABLE_LOOKUP(log_level, int); | |
2181 | ||
2182 | static const char* const sched_policy_table[] = { | |
2183 | [SCHED_OTHER] = "other", | |
2184 | [SCHED_BATCH] = "batch", | |
2185 | [SCHED_IDLE] = "idle", | |
2186 | [SCHED_FIFO] = "fifo", | |
2187 | [SCHED_RR] = "rr" | |
2188 | }; | |
2189 | ||
2190 | DEFINE_STRING_TABLE_LOOKUP(sched_policy, int); | |
2191 | ||
2192 | static const char* const rlimit_table[] = { | |
2193 | [RLIMIT_CPU] = "LimitCPU", | |
2194 | [RLIMIT_FSIZE] = "LimitFSIZE", | |
2195 | [RLIMIT_DATA] = "LimitDATA", | |
2196 | [RLIMIT_STACK] = "LimitSTACK", | |
2197 | [RLIMIT_CORE] = "LimitCORE", | |
2198 | [RLIMIT_RSS] = "LimitRSS", | |
2199 | [RLIMIT_NOFILE] = "LimitNOFILE", | |
2200 | [RLIMIT_AS] = "LimitAS", | |
2201 | [RLIMIT_NPROC] = "LimitNPROC", | |
2202 | [RLIMIT_MEMLOCK] = "LimitMEMLOCK", | |
2203 | [RLIMIT_LOCKS] = "LimitLOCKS", | |
2204 | [RLIMIT_SIGPENDING] = "LimitSIGPENDING", | |
2205 | [RLIMIT_MSGQUEUE] = "LimitMSGQUEUE", | |
2206 | [RLIMIT_NICE] = "LimitNICE", | |
2207 | [RLIMIT_RTPRIO] = "LimitRTPRIO", | |
2208 | [RLIMIT_RTTIME] = "LimitRTTIME" | |
2209 | }; | |
2210 | ||
2211 | DEFINE_STRING_TABLE_LOOKUP(rlimit, int); |