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Commit | Line | Data |
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d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
60918275 | 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> |
5b6319dc | 46 | #include <sys/prctl.h> |
ef2f1067 LP |
47 | #include <sys/utsname.h> |
48 | #include <pwd.h> | |
4fd5948e | 49 | #include <netinet/ip.h> |
3fe5e5d4 | 50 | #include <linux/kd.h> |
afea26ad | 51 | #include <dlfcn.h> |
2e78aa99 | 52 | #include <sys/wait.h> |
60918275 LP |
53 | |
54 | #include "macro.h" | |
55 | #include "util.h" | |
1dccbe19 LP |
56 | #include "ioprio.h" |
57 | #include "missing.h" | |
a9f5d454 | 58 | #include "log.h" |
65d2ebdc | 59 | #include "strv.h" |
e51bc1a2 | 60 | #include "label.h" |
d06dacd0 | 61 | #include "exit-status.h" |
83cc030f | 62 | #include "hashmap.h" |
56cf987f | 63 | |
e05797fb LP |
64 | bool streq_ptr(const char *a, const char *b) { |
65 | ||
66 | /* Like streq(), but tries to make sense of NULL pointers */ | |
67 | ||
68 | if (a && b) | |
69 | return streq(a, b); | |
70 | ||
71 | if (!a && !b) | |
72 | return true; | |
73 | ||
74 | return false; | |
75 | } | |
76 | ||
47be870b | 77 | usec_t now(clockid_t clock_id) { |
60918275 LP |
78 | struct timespec ts; |
79 | ||
47be870b | 80 | assert_se(clock_gettime(clock_id, &ts) == 0); |
60918275 LP |
81 | |
82 | return timespec_load(&ts); | |
83 | } | |
84 | ||
63983207 | 85 | dual_timestamp* dual_timestamp_get(dual_timestamp *ts) { |
871d7de4 LP |
86 | assert(ts); |
87 | ||
88 | ts->realtime = now(CLOCK_REALTIME); | |
89 | ts->monotonic = now(CLOCK_MONOTONIC); | |
90 | ||
91 | return ts; | |
92 | } | |
93 | ||
60918275 LP |
94 | usec_t timespec_load(const struct timespec *ts) { |
95 | assert(ts); | |
96 | ||
97 | return | |
98 | (usec_t) ts->tv_sec * USEC_PER_SEC + | |
99 | (usec_t) ts->tv_nsec / NSEC_PER_USEC; | |
100 | } | |
101 | ||
102 | struct timespec *timespec_store(struct timespec *ts, usec_t u) { | |
103 | assert(ts); | |
104 | ||
105 | ts->tv_sec = (time_t) (u / USEC_PER_SEC); | |
106 | ts->tv_nsec = (long int) ((u % USEC_PER_SEC) * NSEC_PER_USEC); | |
107 | ||
108 | return ts; | |
109 | } | |
110 | ||
111 | usec_t timeval_load(const struct timeval *tv) { | |
112 | assert(tv); | |
113 | ||
114 | return | |
115 | (usec_t) tv->tv_sec * USEC_PER_SEC + | |
116 | (usec_t) tv->tv_usec; | |
117 | } | |
118 | ||
119 | struct timeval *timeval_store(struct timeval *tv, usec_t u) { | |
120 | assert(tv); | |
121 | ||
122 | tv->tv_sec = (time_t) (u / USEC_PER_SEC); | |
123 | tv->tv_usec = (suseconds_t) (u % USEC_PER_SEC); | |
124 | ||
125 | return tv; | |
126 | } | |
127 | ||
128 | bool endswith(const char *s, const char *postfix) { | |
129 | size_t sl, pl; | |
130 | ||
131 | assert(s); | |
132 | assert(postfix); | |
133 | ||
134 | sl = strlen(s); | |
135 | pl = strlen(postfix); | |
136 | ||
d4d0d4db LP |
137 | if (pl == 0) |
138 | return true; | |
139 | ||
60918275 LP |
140 | if (sl < pl) |
141 | return false; | |
142 | ||
143 | return memcmp(s + sl - pl, postfix, pl) == 0; | |
144 | } | |
145 | ||
146 | bool startswith(const char *s, const char *prefix) { | |
147 | size_t sl, pl; | |
148 | ||
149 | assert(s); | |
150 | assert(prefix); | |
151 | ||
152 | sl = strlen(s); | |
153 | pl = strlen(prefix); | |
154 | ||
d4d0d4db LP |
155 | if (pl == 0) |
156 | return true; | |
157 | ||
60918275 LP |
158 | if (sl < pl) |
159 | return false; | |
160 | ||
161 | return memcmp(s, prefix, pl) == 0; | |
162 | } | |
163 | ||
3177a7fa MAP |
164 | bool startswith_no_case(const char *s, const char *prefix) { |
165 | size_t sl, pl; | |
166 | unsigned i; | |
167 | ||
168 | assert(s); | |
169 | assert(prefix); | |
170 | ||
171 | sl = strlen(s); | |
172 | pl = strlen(prefix); | |
173 | ||
174 | if (pl == 0) | |
175 | return true; | |
176 | ||
177 | if (sl < pl) | |
178 | return false; | |
179 | ||
180 | for(i = 0; i < pl; ++i) { | |
181 | if (tolower(s[i]) != tolower(prefix[i])) | |
182 | return false; | |
183 | } | |
184 | ||
185 | return true; | |
186 | } | |
187 | ||
79d6d816 LP |
188 | bool first_word(const char *s, const char *word) { |
189 | size_t sl, wl; | |
190 | ||
191 | assert(s); | |
192 | assert(word); | |
193 | ||
194 | sl = strlen(s); | |
195 | wl = strlen(word); | |
196 | ||
197 | if (sl < wl) | |
198 | return false; | |
199 | ||
d4d0d4db LP |
200 | if (wl == 0) |
201 | return true; | |
202 | ||
79d6d816 LP |
203 | if (memcmp(s, word, wl) != 0) |
204 | return false; | |
205 | ||
d4d0d4db LP |
206 | return s[wl] == 0 || |
207 | strchr(WHITESPACE, s[wl]); | |
79d6d816 LP |
208 | } |
209 | ||
42f4e3c4 | 210 | int close_nointr(int fd) { |
60918275 LP |
211 | assert(fd >= 0); |
212 | ||
213 | for (;;) { | |
214 | int r; | |
215 | ||
216 | if ((r = close(fd)) >= 0) | |
217 | return r; | |
218 | ||
219 | if (errno != EINTR) | |
220 | return r; | |
221 | } | |
222 | } | |
85261803 | 223 | |
85f136b5 | 224 | void close_nointr_nofail(int fd) { |
80876c20 | 225 | int saved_errno = errno; |
85f136b5 LP |
226 | |
227 | /* like close_nointr() but cannot fail, and guarantees errno | |
228 | * is unchanged */ | |
229 | ||
230 | assert_se(close_nointr(fd) == 0); | |
80876c20 LP |
231 | |
232 | errno = saved_errno; | |
85f136b5 LP |
233 | } |
234 | ||
5b6319dc LP |
235 | void close_many(const int fds[], unsigned n_fd) { |
236 | unsigned i; | |
237 | ||
238 | for (i = 0; i < n_fd; i++) | |
239 | close_nointr_nofail(fds[i]); | |
240 | } | |
241 | ||
85261803 LP |
242 | int parse_boolean(const char *v) { |
243 | assert(v); | |
244 | ||
44d8db9e | 245 | if (streq(v, "1") || v[0] == 'y' || v[0] == 'Y' || v[0] == 't' || v[0] == 'T' || !strcasecmp(v, "on")) |
85261803 | 246 | return 1; |
44d8db9e | 247 | else if (streq(v, "0") || v[0] == 'n' || v[0] == 'N' || v[0] == 'f' || v[0] == 'F' || !strcasecmp(v, "off")) |
85261803 LP |
248 | return 0; |
249 | ||
250 | return -EINVAL; | |
251 | } | |
252 | ||
3ba686c1 | 253 | int parse_pid(const char *s, pid_t* ret_pid) { |
0b172489 | 254 | unsigned long ul = 0; |
3ba686c1 LP |
255 | pid_t pid; |
256 | int r; | |
257 | ||
258 | assert(s); | |
259 | assert(ret_pid); | |
260 | ||
261 | if ((r = safe_atolu(s, &ul)) < 0) | |
262 | return r; | |
263 | ||
264 | pid = (pid_t) ul; | |
265 | ||
266 | if ((unsigned long) pid != ul) | |
267 | return -ERANGE; | |
268 | ||
269 | if (pid <= 0) | |
270 | return -ERANGE; | |
271 | ||
272 | *ret_pid = pid; | |
273 | return 0; | |
274 | } | |
275 | ||
85261803 LP |
276 | int safe_atou(const char *s, unsigned *ret_u) { |
277 | char *x = NULL; | |
034c6ed7 | 278 | unsigned long l; |
85261803 LP |
279 | |
280 | assert(s); | |
281 | assert(ret_u); | |
282 | ||
283 | errno = 0; | |
284 | l = strtoul(s, &x, 0); | |
285 | ||
286 | if (!x || *x || errno) | |
287 | return errno ? -errno : -EINVAL; | |
288 | ||
034c6ed7 | 289 | if ((unsigned long) (unsigned) l != l) |
85261803 LP |
290 | return -ERANGE; |
291 | ||
292 | *ret_u = (unsigned) l; | |
293 | return 0; | |
294 | } | |
295 | ||
296 | int safe_atoi(const char *s, int *ret_i) { | |
297 | char *x = NULL; | |
034c6ed7 | 298 | long l; |
85261803 LP |
299 | |
300 | assert(s); | |
301 | assert(ret_i); | |
302 | ||
303 | errno = 0; | |
304 | l = strtol(s, &x, 0); | |
305 | ||
306 | if (!x || *x || errno) | |
307 | return errno ? -errno : -EINVAL; | |
308 | ||
034c6ed7 | 309 | if ((long) (int) l != l) |
85261803 LP |
310 | return -ERANGE; |
311 | ||
034c6ed7 LP |
312 | *ret_i = (int) l; |
313 | return 0; | |
314 | } | |
315 | ||
034c6ed7 LP |
316 | int safe_atollu(const char *s, long long unsigned *ret_llu) { |
317 | char *x = NULL; | |
318 | unsigned long long l; | |
319 | ||
320 | assert(s); | |
321 | assert(ret_llu); | |
322 | ||
323 | errno = 0; | |
324 | l = strtoull(s, &x, 0); | |
325 | ||
326 | if (!x || *x || errno) | |
327 | return errno ? -errno : -EINVAL; | |
328 | ||
329 | *ret_llu = l; | |
330 | return 0; | |
331 | } | |
332 | ||
333 | int safe_atolli(const char *s, long long int *ret_lli) { | |
334 | char *x = NULL; | |
335 | long long l; | |
336 | ||
337 | assert(s); | |
338 | assert(ret_lli); | |
339 | ||
340 | errno = 0; | |
341 | l = strtoll(s, &x, 0); | |
342 | ||
343 | if (!x || *x || errno) | |
344 | return errno ? -errno : -EINVAL; | |
345 | ||
346 | *ret_lli = l; | |
85261803 LP |
347 | return 0; |
348 | } | |
a41e8209 | 349 | |
a41e8209 | 350 | /* Split a string into words. */ |
65d2ebdc | 351 | char *split(const char *c, size_t *l, const char *separator, char **state) { |
a41e8209 LP |
352 | char *current; |
353 | ||
354 | current = *state ? *state : (char*) c; | |
355 | ||
356 | if (!*current || *c == 0) | |
357 | return NULL; | |
358 | ||
65d2ebdc LP |
359 | current += strspn(current, separator); |
360 | *l = strcspn(current, separator); | |
82919e3d LP |
361 | *state = current+*l; |
362 | ||
363 | return (char*) current; | |
364 | } | |
365 | ||
034c6ed7 LP |
366 | /* Split a string into words, but consider strings enclosed in '' and |
367 | * "" as words even if they include spaces. */ | |
368 | char *split_quoted(const char *c, size_t *l, char **state) { | |
0bab36f2 LP |
369 | char *current, *e; |
370 | bool escaped = false; | |
034c6ed7 LP |
371 | |
372 | current = *state ? *state : (char*) c; | |
373 | ||
374 | if (!*current || *c == 0) | |
375 | return NULL; | |
376 | ||
377 | current += strspn(current, WHITESPACE); | |
378 | ||
379 | if (*current == '\'') { | |
380 | current ++; | |
034c6ed7 | 381 | |
0bab36f2 LP |
382 | for (e = current; *e; e++) { |
383 | if (escaped) | |
384 | escaped = false; | |
385 | else if (*e == '\\') | |
386 | escaped = true; | |
387 | else if (*e == '\'') | |
388 | break; | |
389 | } | |
390 | ||
391 | *l = e-current; | |
392 | *state = *e == 0 ? e : e+1; | |
034c6ed7 LP |
393 | } else if (*current == '\"') { |
394 | current ++; | |
034c6ed7 | 395 | |
0bab36f2 LP |
396 | for (e = current; *e; e++) { |
397 | if (escaped) | |
398 | escaped = false; | |
399 | else if (*e == '\\') | |
400 | escaped = true; | |
401 | else if (*e == '\"') | |
402 | break; | |
403 | } | |
404 | ||
405 | *l = e-current; | |
406 | *state = *e == 0 ? e : e+1; | |
034c6ed7 | 407 | } else { |
0bab36f2 LP |
408 | for (e = current; *e; e++) { |
409 | if (escaped) | |
410 | escaped = false; | |
411 | else if (*e == '\\') | |
412 | escaped = true; | |
413 | else if (strchr(WHITESPACE, *e)) | |
414 | break; | |
415 | } | |
416 | *l = e-current; | |
417 | *state = e; | |
034c6ed7 LP |
418 | } |
419 | ||
420 | return (char*) current; | |
421 | } | |
422 | ||
65d2ebdc LP |
423 | char **split_path_and_make_absolute(const char *p) { |
424 | char **l; | |
425 | assert(p); | |
426 | ||
427 | if (!(l = strv_split(p, ":"))) | |
428 | return NULL; | |
429 | ||
430 | if (!strv_path_make_absolute_cwd(l)) { | |
431 | strv_free(l); | |
432 | return NULL; | |
433 | } | |
434 | ||
435 | return l; | |
436 | } | |
437 | ||
034c6ed7 LP |
438 | int get_parent_of_pid(pid_t pid, pid_t *_ppid) { |
439 | int r; | |
440 | FILE *f; | |
441 | char fn[132], line[256], *p; | |
bb00e604 | 442 | long unsigned ppid; |
034c6ed7 LP |
443 | |
444 | assert(pid >= 0); | |
445 | assert(_ppid); | |
446 | ||
bb00e604 | 447 | assert_se(snprintf(fn, sizeof(fn)-1, "/proc/%lu/stat", (unsigned long) pid) < (int) (sizeof(fn)-1)); |
034c6ed7 LP |
448 | fn[sizeof(fn)-1] = 0; |
449 | ||
450 | if (!(f = fopen(fn, "r"))) | |
451 | return -errno; | |
452 | ||
453 | if (!(fgets(line, sizeof(line), f))) { | |
454 | r = -errno; | |
455 | fclose(f); | |
456 | return r; | |
457 | } | |
458 | ||
459 | fclose(f); | |
460 | ||
461 | /* Let's skip the pid and comm fields. The latter is enclosed | |
462 | * in () but does not escape any () in its value, so let's | |
463 | * skip over it manually */ | |
464 | ||
465 | if (!(p = strrchr(line, ')'))) | |
466 | return -EIO; | |
467 | ||
468 | p++; | |
469 | ||
470 | if (sscanf(p, " " | |
471 | "%*c " /* state */ | |
bb00e604 | 472 | "%lu ", /* ppid */ |
034c6ed7 LP |
473 | &ppid) != 1) |
474 | return -EIO; | |
475 | ||
bb00e604 | 476 | if ((long unsigned) (pid_t) ppid != ppid) |
034c6ed7 LP |
477 | return -ERANGE; |
478 | ||
479 | *_ppid = (pid_t) ppid; | |
480 | ||
481 | return 0; | |
482 | } | |
483 | ||
484 | int write_one_line_file(const char *fn, const char *line) { | |
485 | FILE *f; | |
486 | int r; | |
487 | ||
488 | assert(fn); | |
489 | assert(line); | |
490 | ||
491 | if (!(f = fopen(fn, "we"))) | |
492 | return -errno; | |
493 | ||
494 | if (fputs(line, f) < 0) { | |
495 | r = -errno; | |
496 | goto finish; | |
497 | } | |
498 | ||
8e1bd70d LP |
499 | if (!endswith(line, "\n")) |
500 | fputc('\n', f); | |
501 | ||
034c6ed7 LP |
502 | r = 0; |
503 | finish: | |
504 | fclose(f); | |
505 | return r; | |
506 | } | |
507 | ||
508 | int read_one_line_file(const char *fn, char **line) { | |
509 | FILE *f; | |
510 | int r; | |
97c4a07d | 511 | char t[LINE_MAX], *c; |
034c6ed7 LP |
512 | |
513 | assert(fn); | |
514 | assert(line); | |
515 | ||
516 | if (!(f = fopen(fn, "re"))) | |
517 | return -errno; | |
518 | ||
519 | if (!(fgets(t, sizeof(t), f))) { | |
520 | r = -errno; | |
521 | goto finish; | |
522 | } | |
523 | ||
524 | if (!(c = strdup(t))) { | |
525 | r = -ENOMEM; | |
526 | goto finish; | |
527 | } | |
528 | ||
529 | *line = c; | |
530 | r = 0; | |
531 | ||
532 | finish: | |
533 | fclose(f); | |
534 | return r; | |
535 | } | |
44d8db9e | 536 | |
97c4a07d LP |
537 | int read_full_file(const char *fn, char **contents) { |
538 | FILE *f; | |
539 | int r; | |
540 | size_t n, l; | |
541 | char *buf = NULL; | |
542 | struct stat st; | |
543 | ||
544 | if (!(f = fopen(fn, "re"))) | |
545 | return -errno; | |
546 | ||
547 | if (fstat(fileno(f), &st) < 0) { | |
548 | r = -errno; | |
549 | goto finish; | |
550 | } | |
551 | ||
552 | n = st.st_size > 0 ? st.st_size : LINE_MAX; | |
553 | l = 0; | |
554 | ||
555 | for (;;) { | |
556 | char *t; | |
557 | size_t k; | |
558 | ||
559 | if (!(t = realloc(buf, n+1))) { | |
560 | r = -ENOMEM; | |
561 | goto finish; | |
562 | } | |
563 | ||
564 | buf = t; | |
565 | k = fread(buf + l, 1, n - l, f); | |
566 | ||
567 | if (k <= 0) { | |
568 | if (ferror(f)) { | |
569 | r = -errno; | |
570 | goto finish; | |
571 | } | |
572 | ||
573 | break; | |
574 | } | |
575 | ||
576 | l += k; | |
577 | n *= 2; | |
578 | ||
579 | /* Safety check */ | |
580 | if (n > 4*1024*1024) { | |
581 | r = -E2BIG; | |
582 | goto finish; | |
583 | } | |
584 | } | |
585 | ||
586 | if (buf) | |
587 | buf[l] = 0; | |
588 | else if (!(buf = calloc(1, 1))) { | |
589 | r = -errno; | |
590 | goto finish; | |
591 | } | |
592 | ||
593 | *contents = buf; | |
594 | buf = NULL; | |
595 | ||
596 | r = 0; | |
597 | ||
598 | finish: | |
599 | fclose(f); | |
600 | free(buf); | |
601 | ||
602 | return r; | |
603 | } | |
604 | ||
605 | int parse_env_file( | |
606 | const char *fname, | |
c899f8c6 | 607 | const char *separator, ...) { |
97c4a07d | 608 | |
ce8a6aa1 | 609 | int r = 0; |
97c4a07d LP |
610 | char *contents, *p; |
611 | ||
612 | assert(fname); | |
c899f8c6 | 613 | assert(separator); |
97c4a07d LP |
614 | |
615 | if ((r = read_full_file(fname, &contents)) < 0) | |
616 | return r; | |
617 | ||
618 | p = contents; | |
619 | for (;;) { | |
620 | const char *key = NULL; | |
621 | ||
c899f8c6 | 622 | p += strspn(p, separator); |
97c4a07d LP |
623 | p += strspn(p, WHITESPACE); |
624 | ||
625 | if (!*p) | |
626 | break; | |
627 | ||
628 | if (!strchr(COMMENTS, *p)) { | |
629 | va_list ap; | |
630 | char **value; | |
631 | ||
c899f8c6 | 632 | va_start(ap, separator); |
97c4a07d LP |
633 | while ((key = va_arg(ap, char *))) { |
634 | size_t n; | |
635 | char *v; | |
636 | ||
637 | value = va_arg(ap, char **); | |
638 | ||
639 | n = strlen(key); | |
640 | if (strncmp(p, key, n) != 0 || | |
641 | p[n] != '=') | |
642 | continue; | |
643 | ||
644 | p += n + 1; | |
c899f8c6 | 645 | n = strcspn(p, separator); |
97c4a07d LP |
646 | |
647 | if (n >= 2 && | |
e7db37dd LP |
648 | strchr(QUOTES, p[0]) && |
649 | p[n-1] == p[0]) | |
97c4a07d LP |
650 | v = strndup(p+1, n-2); |
651 | else | |
652 | v = strndup(p, n); | |
653 | ||
654 | if (!v) { | |
655 | r = -ENOMEM; | |
656 | va_end(ap); | |
657 | goto fail; | |
658 | } | |
659 | ||
dd36de4d KS |
660 | if (v[0] == '\0') { |
661 | /* return empty value strings as NULL */ | |
662 | free(v); | |
663 | v = NULL; | |
664 | } | |
665 | ||
97c4a07d LP |
666 | free(*value); |
667 | *value = v; | |
668 | ||
669 | p += n; | |
ce8a6aa1 LP |
670 | |
671 | r ++; | |
97c4a07d LP |
672 | break; |
673 | } | |
674 | va_end(ap); | |
675 | } | |
676 | ||
677 | if (!key) | |
c899f8c6 | 678 | p += strcspn(p, separator); |
97c4a07d LP |
679 | } |
680 | ||
97c4a07d LP |
681 | fail: |
682 | free(contents); | |
683 | return r; | |
684 | } | |
685 | ||
7072ced8 LP |
686 | char *truncate_nl(char *s) { |
687 | assert(s); | |
688 | ||
689 | s[strcspn(s, NEWLINE)] = 0; | |
690 | return s; | |
691 | } | |
692 | ||
693 | int get_process_name(pid_t pid, char **name) { | |
694 | char *p; | |
695 | int r; | |
696 | ||
697 | assert(pid >= 1); | |
698 | assert(name); | |
699 | ||
bb00e604 | 700 | if (asprintf(&p, "/proc/%lu/comm", (unsigned long) pid) < 0) |
7072ced8 LP |
701 | return -ENOMEM; |
702 | ||
703 | r = read_one_line_file(p, name); | |
704 | free(p); | |
705 | ||
706 | if (r < 0) | |
707 | return r; | |
708 | ||
709 | truncate_nl(*name); | |
710 | return 0; | |
711 | } | |
712 | ||
c59760ee LP |
713 | int get_process_cmdline(pid_t pid, size_t max_length, char **line) { |
714 | char *p, *r, *k; | |
715 | int c; | |
716 | bool space = false; | |
717 | size_t left; | |
718 | FILE *f; | |
719 | ||
720 | assert(pid >= 1); | |
721 | assert(max_length > 0); | |
722 | assert(line); | |
723 | ||
724 | if (asprintf(&p, "/proc/%lu/cmdline", (unsigned long) pid) < 0) | |
725 | return -ENOMEM; | |
726 | ||
727 | f = fopen(p, "r"); | |
728 | free(p); | |
729 | ||
730 | if (!f) | |
731 | return -errno; | |
732 | ||
733 | if (!(r = new(char, max_length))) { | |
734 | fclose(f); | |
735 | return -ENOMEM; | |
736 | } | |
737 | ||
738 | k = r; | |
739 | left = max_length; | |
740 | while ((c = getc(f)) != EOF) { | |
741 | ||
742 | if (isprint(c)) { | |
743 | if (space) { | |
744 | if (left <= 4) | |
745 | break; | |
746 | ||
747 | *(k++) = ' '; | |
057fbb58 | 748 | left--; |
c59760ee LP |
749 | space = false; |
750 | } | |
751 | ||
752 | if (left <= 4) | |
753 | break; | |
754 | ||
755 | *(k++) = (char) c; | |
057fbb58 | 756 | left--; |
c59760ee LP |
757 | } else |
758 | space = true; | |
759 | } | |
760 | ||
761 | if (left <= 4) { | |
762 | size_t n = MIN(left-1, 3U); | |
763 | memcpy(k, "...", n); | |
764 | k[n] = 0; | |
765 | } else | |
766 | *k = 0; | |
767 | ||
768 | fclose(f); | |
769 | ||
35d2e7ec LP |
770 | /* Kernel threads have no argv[] */ |
771 | if (r[0] == 0) { | |
772 | char *t; | |
773 | int h; | |
774 | ||
775 | free(r); | |
776 | ||
777 | if ((h = get_process_name(pid, &t)) < 0) | |
778 | return h; | |
779 | ||
780 | h = asprintf(&r, "[%s]", t); | |
781 | free(t); | |
782 | ||
783 | if (h < 0) | |
784 | return -ENOMEM; | |
785 | } | |
fa776d8e | 786 | |
c59760ee LP |
787 | *line = r; |
788 | return 0; | |
789 | } | |
790 | ||
fab56fc5 LP |
791 | char *strnappend(const char *s, const char *suffix, size_t b) { |
792 | size_t a; | |
44d8db9e LP |
793 | char *r; |
794 | ||
fab56fc5 LP |
795 | if (!s && !suffix) |
796 | return strdup(""); | |
797 | ||
798 | if (!s) | |
799 | return strndup(suffix, b); | |
800 | ||
801 | if (!suffix) | |
802 | return strdup(s); | |
803 | ||
44d8db9e LP |
804 | assert(s); |
805 | assert(suffix); | |
806 | ||
807 | a = strlen(s); | |
44d8db9e LP |
808 | |
809 | if (!(r = new(char, a+b+1))) | |
810 | return NULL; | |
811 | ||
812 | memcpy(r, s, a); | |
813 | memcpy(r+a, suffix, b); | |
814 | r[a+b] = 0; | |
815 | ||
816 | return r; | |
817 | } | |
87f0e418 | 818 | |
fab56fc5 LP |
819 | char *strappend(const char *s, const char *suffix) { |
820 | return strnappend(s, suffix, suffix ? strlen(suffix) : 0); | |
821 | } | |
822 | ||
87f0e418 LP |
823 | int readlink_malloc(const char *p, char **r) { |
824 | size_t l = 100; | |
825 | ||
826 | assert(p); | |
827 | assert(r); | |
828 | ||
829 | for (;;) { | |
830 | char *c; | |
831 | ssize_t n; | |
832 | ||
833 | if (!(c = new(char, l))) | |
834 | return -ENOMEM; | |
835 | ||
836 | if ((n = readlink(p, c, l-1)) < 0) { | |
837 | int ret = -errno; | |
838 | free(c); | |
839 | return ret; | |
840 | } | |
841 | ||
842 | if ((size_t) n < l-1) { | |
843 | c[n] = 0; | |
844 | *r = c; | |
845 | return 0; | |
846 | } | |
847 | ||
848 | free(c); | |
849 | l *= 2; | |
850 | } | |
851 | } | |
852 | ||
2c7108c4 LP |
853 | int readlink_and_make_absolute(const char *p, char **r) { |
854 | char *target, *k; | |
855 | int j; | |
856 | ||
857 | assert(p); | |
858 | assert(r); | |
859 | ||
860 | if ((j = readlink_malloc(p, &target)) < 0) | |
861 | return j; | |
862 | ||
863 | k = file_in_same_dir(p, target); | |
864 | free(target); | |
865 | ||
866 | if (!k) | |
867 | return -ENOMEM; | |
868 | ||
869 | *r = k; | |
870 | return 0; | |
871 | } | |
872 | ||
35d2e7ec LP |
873 | int parent_of_path(const char *path, char **_r) { |
874 | const char *e, *a = NULL, *b = NULL, *p; | |
875 | char *r; | |
876 | bool slash = false; | |
877 | ||
878 | assert(path); | |
879 | assert(_r); | |
880 | ||
881 | if (!*path) | |
882 | return -EINVAL; | |
883 | ||
884 | for (e = path; *e; e++) { | |
885 | ||
886 | if (!slash && *e == '/') { | |
887 | a = b; | |
888 | b = e; | |
889 | slash = true; | |
890 | } else if (slash && *e != '/') | |
891 | slash = false; | |
892 | } | |
893 | ||
894 | if (*(e-1) == '/') | |
895 | p = a; | |
896 | else | |
897 | p = b; | |
898 | ||
899 | if (!p) | |
900 | return -EINVAL; | |
901 | ||
902 | if (p == path) | |
903 | r = strdup("/"); | |
904 | else | |
905 | r = strndup(path, p-path); | |
906 | ||
907 | if (!r) | |
908 | return -ENOMEM; | |
909 | ||
910 | *_r = r; | |
911 | return 0; | |
912 | } | |
913 | ||
914 | ||
87f0e418 LP |
915 | char *file_name_from_path(const char *p) { |
916 | char *r; | |
917 | ||
918 | assert(p); | |
919 | ||
920 | if ((r = strrchr(p, '/'))) | |
921 | return r + 1; | |
922 | ||
923 | return (char*) p; | |
924 | } | |
0301abf4 LP |
925 | |
926 | bool path_is_absolute(const char *p) { | |
927 | assert(p); | |
928 | ||
929 | return p[0] == '/'; | |
930 | } | |
931 | ||
932 | bool is_path(const char *p) { | |
933 | ||
934 | return !!strchr(p, '/'); | |
935 | } | |
936 | ||
937 | char *path_make_absolute(const char *p, const char *prefix) { | |
938 | char *r; | |
939 | ||
940 | assert(p); | |
941 | ||
65d2ebdc LP |
942 | /* Makes every item in the list an absolute path by prepending |
943 | * the prefix, if specified and necessary */ | |
944 | ||
0301abf4 LP |
945 | if (path_is_absolute(p) || !prefix) |
946 | return strdup(p); | |
947 | ||
948 | if (asprintf(&r, "%s/%s", prefix, p) < 0) | |
949 | return NULL; | |
950 | ||
951 | return r; | |
952 | } | |
2a987ee8 | 953 | |
65d2ebdc LP |
954 | char *path_make_absolute_cwd(const char *p) { |
955 | char *cwd, *r; | |
956 | ||
957 | assert(p); | |
958 | ||
959 | /* Similar to path_make_absolute(), but prefixes with the | |
960 | * current working directory. */ | |
961 | ||
962 | if (path_is_absolute(p)) | |
963 | return strdup(p); | |
964 | ||
965 | if (!(cwd = get_current_dir_name())) | |
966 | return NULL; | |
967 | ||
968 | r = path_make_absolute(p, cwd); | |
969 | free(cwd); | |
970 | ||
971 | return r; | |
972 | } | |
973 | ||
974 | char **strv_path_make_absolute_cwd(char **l) { | |
975 | char **s; | |
976 | ||
977 | /* Goes through every item in the string list and makes it | |
978 | * absolute. This works in place and won't rollback any | |
979 | * changes on failure. */ | |
980 | ||
981 | STRV_FOREACH(s, l) { | |
982 | char *t; | |
983 | ||
984 | if (!(t = path_make_absolute_cwd(*s))) | |
985 | return NULL; | |
986 | ||
987 | free(*s); | |
988 | *s = t; | |
989 | } | |
990 | ||
991 | return l; | |
992 | } | |
993 | ||
c3f6d675 LP |
994 | char **strv_path_canonicalize(char **l) { |
995 | char **s; | |
996 | unsigned k = 0; | |
997 | bool enomem = false; | |
998 | ||
999 | if (strv_isempty(l)) | |
1000 | return l; | |
1001 | ||
1002 | /* Goes through every item in the string list and canonicalize | |
1003 | * the path. This works in place and won't rollback any | |
1004 | * changes on failure. */ | |
1005 | ||
1006 | STRV_FOREACH(s, l) { | |
1007 | char *t, *u; | |
1008 | ||
1009 | t = path_make_absolute_cwd(*s); | |
1010 | free(*s); | |
1011 | ||
1012 | if (!t) { | |
1013 | enomem = true; | |
1014 | continue; | |
1015 | } | |
1016 | ||
1017 | errno = 0; | |
1018 | u = canonicalize_file_name(t); | |
1019 | free(t); | |
1020 | ||
1021 | if (!u) { | |
1022 | if (errno == ENOMEM || !errno) | |
1023 | enomem = true; | |
1024 | ||
1025 | continue; | |
1026 | } | |
1027 | ||
1028 | l[k++] = u; | |
1029 | } | |
1030 | ||
1031 | l[k] = NULL; | |
1032 | ||
1033 | if (enomem) | |
1034 | return NULL; | |
1035 | ||
1036 | return l; | |
1037 | } | |
1038 | ||
2a987ee8 LP |
1039 | int reset_all_signal_handlers(void) { |
1040 | int sig; | |
1041 | ||
1042 | for (sig = 1; sig < _NSIG; sig++) { | |
1043 | struct sigaction sa; | |
1044 | ||
1045 | if (sig == SIGKILL || sig == SIGSTOP) | |
1046 | continue; | |
1047 | ||
1048 | zero(sa); | |
1049 | sa.sa_handler = SIG_DFL; | |
431c32bf | 1050 | sa.sa_flags = SA_RESTART; |
2a987ee8 LP |
1051 | |
1052 | /* On Linux the first two RT signals are reserved by | |
1053 | * glibc, and sigaction() will return EINVAL for them. */ | |
1054 | if ((sigaction(sig, &sa, NULL) < 0)) | |
1055 | if (errno != EINVAL) | |
1056 | return -errno; | |
1057 | } | |
1058 | ||
8e274523 | 1059 | return 0; |
2a987ee8 | 1060 | } |
4a72ff34 LP |
1061 | |
1062 | char *strstrip(char *s) { | |
1063 | char *e, *l = NULL; | |
1064 | ||
1065 | /* Drops trailing whitespace. Modifies the string in | |
1066 | * place. Returns pointer to first non-space character */ | |
1067 | ||
1068 | s += strspn(s, WHITESPACE); | |
1069 | ||
1070 | for (e = s; *e; e++) | |
1071 | if (!strchr(WHITESPACE, *e)) | |
1072 | l = e; | |
1073 | ||
1074 | if (l) | |
1075 | *(l+1) = 0; | |
1076 | else | |
1077 | *s = 0; | |
1078 | ||
1079 | return s; | |
4a72ff34 LP |
1080 | } |
1081 | ||
ee9b5e01 LP |
1082 | char *delete_chars(char *s, const char *bad) { |
1083 | char *f, *t; | |
1084 | ||
1085 | /* Drops all whitespace, regardless where in the string */ | |
1086 | ||
1087 | for (f = s, t = s; *f; f++) { | |
1088 | if (strchr(bad, *f)) | |
1089 | continue; | |
1090 | ||
1091 | *(t++) = *f; | |
1092 | } | |
1093 | ||
1094 | *t = 0; | |
1095 | ||
1096 | return s; | |
1097 | } | |
1098 | ||
4a72ff34 LP |
1099 | char *file_in_same_dir(const char *path, const char *filename) { |
1100 | char *e, *r; | |
1101 | size_t k; | |
1102 | ||
1103 | assert(path); | |
1104 | assert(filename); | |
1105 | ||
1106 | /* This removes the last component of path and appends | |
1107 | * filename, unless the latter is absolute anyway or the | |
1108 | * former isn't */ | |
1109 | ||
1110 | if (path_is_absolute(filename)) | |
1111 | return strdup(filename); | |
1112 | ||
1113 | if (!(e = strrchr(path, '/'))) | |
1114 | return strdup(filename); | |
1115 | ||
1116 | k = strlen(filename); | |
1117 | if (!(r = new(char, e-path+1+k+1))) | |
1118 | return NULL; | |
1119 | ||
1120 | memcpy(r, path, e-path+1); | |
1121 | memcpy(r+(e-path)+1, filename, k+1); | |
1122 | ||
1123 | return r; | |
1124 | } | |
fb624d04 | 1125 | |
8c6db833 LP |
1126 | int safe_mkdir(const char *path, mode_t mode, uid_t uid, gid_t gid) { |
1127 | struct stat st; | |
1128 | ||
56cf987f | 1129 | if (label_mkdir(path, mode) >= 0) |
8c6db833 LP |
1130 | if (chmod_and_chown(path, mode, uid, gid) < 0) |
1131 | return -errno; | |
1132 | ||
1133 | if (lstat(path, &st) < 0) | |
1134 | return -errno; | |
1135 | ||
1136 | if ((st.st_mode & 0777) != mode || | |
1137 | st.st_uid != uid || | |
1138 | st.st_gid != gid || | |
1139 | !S_ISDIR(st.st_mode)) { | |
1140 | errno = EEXIST; | |
1141 | return -errno; | |
1142 | } | |
1143 | ||
1144 | return 0; | |
1145 | } | |
1146 | ||
1147 | ||
a9f5d454 LP |
1148 | int mkdir_parents(const char *path, mode_t mode) { |
1149 | const char *p, *e; | |
1150 | ||
1151 | assert(path); | |
1152 | ||
1153 | /* Creates every parent directory in the path except the last | |
1154 | * component. */ | |
1155 | ||
1156 | p = path + strspn(path, "/"); | |
1157 | for (;;) { | |
1158 | int r; | |
1159 | char *t; | |
1160 | ||
1161 | e = p + strcspn(p, "/"); | |
1162 | p = e + strspn(e, "/"); | |
1163 | ||
1164 | /* Is this the last component? If so, then we're | |
1165 | * done */ | |
1166 | if (*p == 0) | |
1167 | return 0; | |
1168 | ||
1169 | if (!(t = strndup(path, e - path))) | |
1170 | return -ENOMEM; | |
1171 | ||
56cf987f | 1172 | r = label_mkdir(t, mode); |
a9f5d454 LP |
1173 | free(t); |
1174 | ||
1175 | if (r < 0 && errno != EEXIST) | |
1176 | return -errno; | |
1177 | } | |
1178 | } | |
1179 | ||
bbd67135 LP |
1180 | int mkdir_p(const char *path, mode_t mode) { |
1181 | int r; | |
1182 | ||
1183 | /* Like mkdir -p */ | |
1184 | ||
1185 | if ((r = mkdir_parents(path, mode)) < 0) | |
1186 | return r; | |
1187 | ||
56cf987f | 1188 | if (label_mkdir(path, mode) < 0 && errno != EEXIST) |
bbd67135 LP |
1189 | return -errno; |
1190 | ||
1191 | return 0; | |
1192 | } | |
1193 | ||
c32dd69b LP |
1194 | int rmdir_parents(const char *path, const char *stop) { |
1195 | size_t l; | |
1196 | int r = 0; | |
1197 | ||
1198 | assert(path); | |
1199 | assert(stop); | |
1200 | ||
1201 | l = strlen(path); | |
1202 | ||
1203 | /* Skip trailing slashes */ | |
1204 | while (l > 0 && path[l-1] == '/') | |
1205 | l--; | |
1206 | ||
1207 | while (l > 0) { | |
1208 | char *t; | |
1209 | ||
1210 | /* Skip last component */ | |
1211 | while (l > 0 && path[l-1] != '/') | |
1212 | l--; | |
1213 | ||
1214 | /* Skip trailing slashes */ | |
1215 | while (l > 0 && path[l-1] == '/') | |
1216 | l--; | |
1217 | ||
1218 | if (l <= 0) | |
1219 | break; | |
1220 | ||
1221 | if (!(t = strndup(path, l))) | |
1222 | return -ENOMEM; | |
1223 | ||
1224 | if (path_startswith(stop, t)) { | |
1225 | free(t); | |
1226 | return 0; | |
1227 | } | |
1228 | ||
1229 | r = rmdir(t); | |
1230 | free(t); | |
1231 | ||
1232 | if (r < 0) | |
1233 | if (errno != ENOENT) | |
1234 | return -errno; | |
1235 | } | |
1236 | ||
1237 | return 0; | |
1238 | } | |
1239 | ||
1240 | ||
fb624d04 LP |
1241 | char hexchar(int x) { |
1242 | static const char table[16] = "0123456789abcdef"; | |
1243 | ||
1244 | return table[x & 15]; | |
1245 | } | |
4fe88d28 LP |
1246 | |
1247 | int unhexchar(char c) { | |
1248 | ||
1249 | if (c >= '0' && c <= '9') | |
1250 | return c - '0'; | |
1251 | ||
1252 | if (c >= 'a' && c <= 'f') | |
ea430986 | 1253 | return c - 'a' + 10; |
4fe88d28 LP |
1254 | |
1255 | if (c >= 'A' && c <= 'F') | |
ea430986 | 1256 | return c - 'A' + 10; |
4fe88d28 LP |
1257 | |
1258 | return -1; | |
1259 | } | |
1260 | ||
1261 | char octchar(int x) { | |
1262 | return '0' + (x & 7); | |
1263 | } | |
1264 | ||
1265 | int unoctchar(char c) { | |
1266 | ||
1267 | if (c >= '0' && c <= '7') | |
1268 | return c - '0'; | |
1269 | ||
1270 | return -1; | |
1271 | } | |
1272 | ||
5af98f82 LP |
1273 | char decchar(int x) { |
1274 | return '0' + (x % 10); | |
1275 | } | |
1276 | ||
1277 | int undecchar(char c) { | |
1278 | ||
1279 | if (c >= '0' && c <= '9') | |
1280 | return c - '0'; | |
1281 | ||
1282 | return -1; | |
1283 | } | |
1284 | ||
4fe88d28 LP |
1285 | char *cescape(const char *s) { |
1286 | char *r, *t; | |
1287 | const char *f; | |
1288 | ||
1289 | assert(s); | |
1290 | ||
1291 | /* Does C style string escaping. */ | |
1292 | ||
1293 | if (!(r = new(char, strlen(s)*4 + 1))) | |
1294 | return NULL; | |
1295 | ||
1296 | for (f = s, t = r; *f; f++) | |
1297 | ||
1298 | switch (*f) { | |
1299 | ||
1300 | case '\a': | |
1301 | *(t++) = '\\'; | |
1302 | *(t++) = 'a'; | |
1303 | break; | |
1304 | case '\b': | |
1305 | *(t++) = '\\'; | |
1306 | *(t++) = 'b'; | |
1307 | break; | |
1308 | case '\f': | |
1309 | *(t++) = '\\'; | |
1310 | *(t++) = 'f'; | |
1311 | break; | |
1312 | case '\n': | |
1313 | *(t++) = '\\'; | |
1314 | *(t++) = 'n'; | |
1315 | break; | |
1316 | case '\r': | |
1317 | *(t++) = '\\'; | |
1318 | *(t++) = 'r'; | |
1319 | break; | |
1320 | case '\t': | |
1321 | *(t++) = '\\'; | |
1322 | *(t++) = 't'; | |
1323 | break; | |
1324 | case '\v': | |
1325 | *(t++) = '\\'; | |
1326 | *(t++) = 'v'; | |
1327 | break; | |
1328 | case '\\': | |
1329 | *(t++) = '\\'; | |
1330 | *(t++) = '\\'; | |
1331 | break; | |
1332 | case '"': | |
1333 | *(t++) = '\\'; | |
1334 | *(t++) = '"'; | |
1335 | break; | |
1336 | case '\'': | |
1337 | *(t++) = '\\'; | |
1338 | *(t++) = '\''; | |
1339 | break; | |
1340 | ||
1341 | default: | |
1342 | /* For special chars we prefer octal over | |
1343 | * hexadecimal encoding, simply because glib's | |
1344 | * g_strescape() does the same */ | |
1345 | if ((*f < ' ') || (*f >= 127)) { | |
1346 | *(t++) = '\\'; | |
1347 | *(t++) = octchar((unsigned char) *f >> 6); | |
1348 | *(t++) = octchar((unsigned char) *f >> 3); | |
1349 | *(t++) = octchar((unsigned char) *f); | |
1350 | } else | |
1351 | *(t++) = *f; | |
1352 | break; | |
1353 | } | |
1354 | ||
1355 | *t = 0; | |
1356 | ||
1357 | return r; | |
1358 | } | |
1359 | ||
6febfd0d | 1360 | char *cunescape_length(const char *s, size_t length) { |
4fe88d28 LP |
1361 | char *r, *t; |
1362 | const char *f; | |
1363 | ||
1364 | assert(s); | |
1365 | ||
1366 | /* Undoes C style string escaping */ | |
1367 | ||
6febfd0d | 1368 | if (!(r = new(char, length+1))) |
4fe88d28 LP |
1369 | return r; |
1370 | ||
6febfd0d | 1371 | for (f = s, t = r; f < s + length; f++) { |
4fe88d28 LP |
1372 | |
1373 | if (*f != '\\') { | |
1374 | *(t++) = *f; | |
1375 | continue; | |
1376 | } | |
1377 | ||
1378 | f++; | |
1379 | ||
1380 | switch (*f) { | |
1381 | ||
1382 | case 'a': | |
1383 | *(t++) = '\a'; | |
1384 | break; | |
1385 | case 'b': | |
1386 | *(t++) = '\b'; | |
1387 | break; | |
1388 | case 'f': | |
1389 | *(t++) = '\f'; | |
1390 | break; | |
1391 | case 'n': | |
1392 | *(t++) = '\n'; | |
1393 | break; | |
1394 | case 'r': | |
1395 | *(t++) = '\r'; | |
1396 | break; | |
1397 | case 't': | |
1398 | *(t++) = '\t'; | |
1399 | break; | |
1400 | case 'v': | |
1401 | *(t++) = '\v'; | |
1402 | break; | |
1403 | case '\\': | |
1404 | *(t++) = '\\'; | |
1405 | break; | |
1406 | case '"': | |
1407 | *(t++) = '"'; | |
1408 | break; | |
1409 | case '\'': | |
1410 | *(t++) = '\''; | |
1411 | break; | |
1412 | ||
e167fb86 LP |
1413 | case 's': |
1414 | /* This is an extension of the XDG syntax files */ | |
1415 | *(t++) = ' '; | |
1416 | break; | |
1417 | ||
4fe88d28 LP |
1418 | case 'x': { |
1419 | /* hexadecimal encoding */ | |
1420 | int a, b; | |
1421 | ||
1422 | if ((a = unhexchar(f[1])) < 0 || | |
1423 | (b = unhexchar(f[2])) < 0) { | |
1424 | /* Invalid escape code, let's take it literal then */ | |
1425 | *(t++) = '\\'; | |
1426 | *(t++) = 'x'; | |
1427 | } else { | |
1428 | *(t++) = (char) ((a << 4) | b); | |
1429 | f += 2; | |
1430 | } | |
1431 | ||
1432 | break; | |
1433 | } | |
1434 | ||
1435 | case '0': | |
1436 | case '1': | |
1437 | case '2': | |
1438 | case '3': | |
1439 | case '4': | |
1440 | case '5': | |
1441 | case '6': | |
1442 | case '7': { | |
1443 | /* octal encoding */ | |
1444 | int a, b, c; | |
1445 | ||
1446 | if ((a = unoctchar(f[0])) < 0 || | |
1447 | (b = unoctchar(f[1])) < 0 || | |
1448 | (c = unoctchar(f[2])) < 0) { | |
1449 | /* Invalid escape code, let's take it literal then */ | |
1450 | *(t++) = '\\'; | |
1451 | *(t++) = f[0]; | |
1452 | } else { | |
1453 | *(t++) = (char) ((a << 6) | (b << 3) | c); | |
1454 | f += 2; | |
1455 | } | |
1456 | ||
1457 | break; | |
1458 | } | |
1459 | ||
1460 | case 0: | |
1461 | /* premature end of string.*/ | |
1462 | *(t++) = '\\'; | |
1463 | goto finish; | |
1464 | ||
1465 | default: | |
1466 | /* Invalid escape code, let's take it literal then */ | |
1467 | *(t++) = '\\'; | |
f3d4cc01 | 1468 | *(t++) = *f; |
4fe88d28 LP |
1469 | break; |
1470 | } | |
1471 | } | |
1472 | ||
1473 | finish: | |
1474 | *t = 0; | |
1475 | return r; | |
1476 | } | |
1477 | ||
6febfd0d LP |
1478 | char *cunescape(const char *s) { |
1479 | return cunescape_length(s, strlen(s)); | |
1480 | } | |
4fe88d28 LP |
1481 | |
1482 | char *xescape(const char *s, const char *bad) { | |
1483 | char *r, *t; | |
1484 | const char *f; | |
1485 | ||
1486 | /* Escapes all chars in bad, in addition to \ and all special | |
1487 | * chars, in \xFF style escaping. May be reversed with | |
1488 | * cunescape. */ | |
1489 | ||
1490 | if (!(r = new(char, strlen(s)*4+1))) | |
1491 | return NULL; | |
1492 | ||
1493 | for (f = s, t = r; *f; f++) { | |
1494 | ||
b866264a LP |
1495 | if ((*f < ' ') || (*f >= 127) || |
1496 | (*f == '\\') || strchr(bad, *f)) { | |
4fe88d28 LP |
1497 | *(t++) = '\\'; |
1498 | *(t++) = 'x'; | |
1499 | *(t++) = hexchar(*f >> 4); | |
1500 | *(t++) = hexchar(*f); | |
1501 | } else | |
1502 | *(t++) = *f; | |
1503 | } | |
1504 | ||
1505 | *t = 0; | |
1506 | ||
1507 | return r; | |
1508 | } | |
1509 | ||
ea430986 | 1510 | char *bus_path_escape(const char *s) { |
ea430986 LP |
1511 | char *r, *t; |
1512 | const char *f; | |
1513 | ||
47be870b LP |
1514 | assert(s); |
1515 | ||
ea430986 LP |
1516 | /* Escapes all chars that D-Bus' object path cannot deal |
1517 | * with. Can be reverse with bus_path_unescape() */ | |
1518 | ||
1519 | if (!(r = new(char, strlen(s)*3+1))) | |
1520 | return NULL; | |
1521 | ||
1522 | for (f = s, t = r; *f; f++) { | |
1523 | ||
1524 | if (!(*f >= 'A' && *f <= 'Z') && | |
1525 | !(*f >= 'a' && *f <= 'z') && | |
1526 | !(*f >= '0' && *f <= '9')) { | |
1527 | *(t++) = '_'; | |
1528 | *(t++) = hexchar(*f >> 4); | |
1529 | *(t++) = hexchar(*f); | |
1530 | } else | |
1531 | *(t++) = *f; | |
1532 | } | |
1533 | ||
1534 | *t = 0; | |
1535 | ||
1536 | return r; | |
1537 | } | |
1538 | ||
9e2f7c11 | 1539 | char *bus_path_unescape(const char *f) { |
ea430986 | 1540 | char *r, *t; |
ea430986 | 1541 | |
9e2f7c11 | 1542 | assert(f); |
47be870b | 1543 | |
9e2f7c11 | 1544 | if (!(r = strdup(f))) |
ea430986 LP |
1545 | return NULL; |
1546 | ||
9e2f7c11 | 1547 | for (t = r; *f; f++) { |
ea430986 LP |
1548 | |
1549 | if (*f == '_') { | |
1550 | int a, b; | |
1551 | ||
1552 | if ((a = unhexchar(f[1])) < 0 || | |
1553 | (b = unhexchar(f[2])) < 0) { | |
1554 | /* Invalid escape code, let's take it literal then */ | |
1555 | *(t++) = '_'; | |
1556 | } else { | |
1557 | *(t++) = (char) ((a << 4) | b); | |
1558 | f += 2; | |
1559 | } | |
1560 | } else | |
1561 | *(t++) = *f; | |
1562 | } | |
1563 | ||
1564 | *t = 0; | |
1565 | ||
1566 | return r; | |
1567 | } | |
1568 | ||
4fe88d28 LP |
1569 | char *path_kill_slashes(char *path) { |
1570 | char *f, *t; | |
1571 | bool slash = false; | |
1572 | ||
1573 | /* Removes redundant inner and trailing slashes. Modifies the | |
1574 | * passed string in-place. | |
1575 | * | |
1576 | * ///foo///bar/ becomes /foo/bar | |
1577 | */ | |
1578 | ||
1579 | for (f = path, t = path; *f; f++) { | |
1580 | ||
1581 | if (*f == '/') { | |
1582 | slash = true; | |
1583 | continue; | |
1584 | } | |
1585 | ||
1586 | if (slash) { | |
1587 | slash = false; | |
1588 | *(t++) = '/'; | |
1589 | } | |
1590 | ||
1591 | *(t++) = *f; | |
1592 | } | |
1593 | ||
1594 | /* Special rule, if we are talking of the root directory, a | |
1595 | trailing slash is good */ | |
1596 | ||
1597 | if (t == path && slash) | |
1598 | *(t++) = '/'; | |
1599 | ||
1600 | *t = 0; | |
1601 | return path; | |
1602 | } | |
1603 | ||
1604 | bool path_startswith(const char *path, const char *prefix) { | |
1605 | assert(path); | |
1606 | assert(prefix); | |
1607 | ||
1608 | if ((path[0] == '/') != (prefix[0] == '/')) | |
1609 | return false; | |
1610 | ||
1611 | for (;;) { | |
1612 | size_t a, b; | |
1613 | ||
1614 | path += strspn(path, "/"); | |
1615 | prefix += strspn(prefix, "/"); | |
1616 | ||
1617 | if (*prefix == 0) | |
1618 | return true; | |
1619 | ||
1620 | if (*path == 0) | |
1621 | return false; | |
1622 | ||
1623 | a = strcspn(path, "/"); | |
1624 | b = strcspn(prefix, "/"); | |
1625 | ||
1626 | if (a != b) | |
1627 | return false; | |
1628 | ||
1629 | if (memcmp(path, prefix, a) != 0) | |
1630 | return false; | |
1631 | ||
1632 | path += a; | |
1633 | prefix += b; | |
1634 | } | |
1635 | } | |
1636 | ||
15ae422b LP |
1637 | bool path_equal(const char *a, const char *b) { |
1638 | assert(a); | |
1639 | assert(b); | |
1640 | ||
1641 | if ((a[0] == '/') != (b[0] == '/')) | |
1642 | return false; | |
1643 | ||
1644 | for (;;) { | |
1645 | size_t j, k; | |
1646 | ||
1647 | a += strspn(a, "/"); | |
1648 | b += strspn(b, "/"); | |
1649 | ||
1650 | if (*a == 0 && *b == 0) | |
1651 | return true; | |
1652 | ||
1653 | if (*a == 0 || *b == 0) | |
1654 | return false; | |
1655 | ||
1656 | j = strcspn(a, "/"); | |
1657 | k = strcspn(b, "/"); | |
1658 | ||
1659 | if (j != k) | |
1660 | return false; | |
1661 | ||
1662 | if (memcmp(a, b, j) != 0) | |
1663 | return false; | |
1664 | ||
1665 | a += j; | |
1666 | b += k; | |
1667 | } | |
1668 | } | |
1669 | ||
67d51650 | 1670 | char *ascii_strlower(char *t) { |
4fe88d28 LP |
1671 | char *p; |
1672 | ||
67d51650 | 1673 | assert(t); |
4fe88d28 | 1674 | |
67d51650 | 1675 | for (p = t; *p; p++) |
4fe88d28 LP |
1676 | if (*p >= 'A' && *p <= 'Z') |
1677 | *p = *p - 'A' + 'a'; | |
1678 | ||
67d51650 | 1679 | return t; |
4fe88d28 | 1680 | } |
1dccbe19 | 1681 | |
c85dc17b LP |
1682 | bool ignore_file(const char *filename) { |
1683 | assert(filename); | |
1684 | ||
1685 | return | |
1686 | filename[0] == '.' || | |
6c78be3c | 1687 | streq(filename, "lost+found") || |
e472d476 LP |
1688 | streq(filename, "aquota.user") || |
1689 | streq(filename, "aquota.group") || | |
c85dc17b LP |
1690 | endswith(filename, "~") || |
1691 | endswith(filename, ".rpmnew") || | |
1692 | endswith(filename, ".rpmsave") || | |
1693 | endswith(filename, ".rpmorig") || | |
1694 | endswith(filename, ".dpkg-old") || | |
1695 | endswith(filename, ".dpkg-new") || | |
1696 | endswith(filename, ".swp"); | |
1697 | } | |
1698 | ||
3a0ecb08 LP |
1699 | int fd_nonblock(int fd, bool nonblock) { |
1700 | int flags; | |
1701 | ||
1702 | assert(fd >= 0); | |
1703 | ||
1704 | if ((flags = fcntl(fd, F_GETFL, 0)) < 0) | |
1705 | return -errno; | |
1706 | ||
1707 | if (nonblock) | |
1708 | flags |= O_NONBLOCK; | |
1709 | else | |
1710 | flags &= ~O_NONBLOCK; | |
1711 | ||
1712 | if (fcntl(fd, F_SETFL, flags) < 0) | |
1713 | return -errno; | |
1714 | ||
1715 | return 0; | |
1716 | } | |
1717 | ||
1718 | int fd_cloexec(int fd, bool cloexec) { | |
1719 | int flags; | |
1720 | ||
1721 | assert(fd >= 0); | |
1722 | ||
1723 | if ((flags = fcntl(fd, F_GETFD, 0)) < 0) | |
1724 | return -errno; | |
1725 | ||
1726 | if (cloexec) | |
1727 | flags |= FD_CLOEXEC; | |
1728 | else | |
1729 | flags &= ~FD_CLOEXEC; | |
1730 | ||
1731 | if (fcntl(fd, F_SETFD, flags) < 0) | |
1732 | return -errno; | |
1733 | ||
1734 | return 0; | |
1735 | } | |
1736 | ||
a0d40ac5 LP |
1737 | int close_all_fds(const int except[], unsigned n_except) { |
1738 | DIR *d; | |
1739 | struct dirent *de; | |
1740 | int r = 0; | |
1741 | ||
1742 | if (!(d = opendir("/proc/self/fd"))) | |
1743 | return -errno; | |
1744 | ||
1745 | while ((de = readdir(d))) { | |
a7610064 | 1746 | int fd = -1; |
a0d40ac5 | 1747 | |
a16e1123 | 1748 | if (ignore_file(de->d_name)) |
a0d40ac5 LP |
1749 | continue; |
1750 | ||
1751 | if ((r = safe_atoi(de->d_name, &fd)) < 0) | |
1752 | goto finish; | |
1753 | ||
1754 | if (fd < 3) | |
1755 | continue; | |
1756 | ||
1757 | if (fd == dirfd(d)) | |
1758 | continue; | |
1759 | ||
1760 | if (except) { | |
1761 | bool found; | |
1762 | unsigned i; | |
1763 | ||
1764 | found = false; | |
1765 | for (i = 0; i < n_except; i++) | |
1766 | if (except[i] == fd) { | |
1767 | found = true; | |
1768 | break; | |
1769 | } | |
1770 | ||
1771 | if (found) | |
1772 | continue; | |
1773 | } | |
1774 | ||
2f357920 LP |
1775 | if ((r = close_nointr(fd)) < 0) { |
1776 | /* Valgrind has its own FD and doesn't want to have it closed */ | |
1777 | if (errno != EBADF) | |
1778 | goto finish; | |
1779 | } | |
a0d40ac5 LP |
1780 | } |
1781 | ||
2f357920 LP |
1782 | r = 0; |
1783 | ||
a0d40ac5 LP |
1784 | finish: |
1785 | closedir(d); | |
1786 | return r; | |
1787 | } | |
1788 | ||
db12775d LP |
1789 | bool chars_intersect(const char *a, const char *b) { |
1790 | const char *p; | |
1791 | ||
1792 | /* Returns true if any of the chars in a are in b. */ | |
1793 | for (p = a; *p; p++) | |
1794 | if (strchr(b, *p)) | |
1795 | return true; | |
1796 | ||
1797 | return false; | |
1798 | } | |
1799 | ||
8b6c7120 LP |
1800 | char *format_timestamp(char *buf, size_t l, usec_t t) { |
1801 | struct tm tm; | |
1802 | time_t sec; | |
1803 | ||
1804 | assert(buf); | |
1805 | assert(l > 0); | |
1806 | ||
1807 | if (t <= 0) | |
1808 | return NULL; | |
1809 | ||
f872ec33 | 1810 | sec = (time_t) (t / USEC_PER_SEC); |
8b6c7120 LP |
1811 | |
1812 | if (strftime(buf, l, "%a, %d %b %Y %H:%M:%S %z", localtime_r(&sec, &tm)) <= 0) | |
1813 | return NULL; | |
1814 | ||
1815 | return buf; | |
1816 | } | |
1817 | ||
584be568 LP |
1818 | char *format_timestamp_pretty(char *buf, size_t l, usec_t t) { |
1819 | usec_t n, d; | |
1820 | ||
1821 | n = now(CLOCK_REALTIME); | |
1822 | ||
1823 | if (t <= 0 || t > n || t + USEC_PER_DAY*7 <= t) | |
1824 | return NULL; | |
1825 | ||
1826 | d = n - t; | |
1827 | ||
1828 | if (d >= USEC_PER_YEAR) | |
1829 | snprintf(buf, l, "%llu years and %llu months ago", | |
1830 | (unsigned long long) (d / USEC_PER_YEAR), | |
1831 | (unsigned long long) ((d % USEC_PER_YEAR) / USEC_PER_MONTH)); | |
1832 | else if (d >= USEC_PER_MONTH) | |
1833 | snprintf(buf, l, "%llu months and %llu days ago", | |
1834 | (unsigned long long) (d / USEC_PER_MONTH), | |
1835 | (unsigned long long) ((d % USEC_PER_MONTH) / USEC_PER_DAY)); | |
1836 | else if (d >= USEC_PER_WEEK) | |
1837 | snprintf(buf, l, "%llu weeks and %llu days ago", | |
1838 | (unsigned long long) (d / USEC_PER_WEEK), | |
1839 | (unsigned long long) ((d % USEC_PER_WEEK) / USEC_PER_DAY)); | |
1840 | else if (d >= 2*USEC_PER_DAY) | |
1841 | snprintf(buf, l, "%llu days ago", (unsigned long long) (d / USEC_PER_DAY)); | |
1842 | else if (d >= 25*USEC_PER_HOUR) | |
1843 | snprintf(buf, l, "1 day and %lluh ago", | |
1844 | (unsigned long long) ((d - USEC_PER_DAY) / USEC_PER_HOUR)); | |
1845 | else if (d >= 6*USEC_PER_HOUR) | |
1846 | snprintf(buf, l, "%lluh ago", | |
1847 | (unsigned long long) (d / USEC_PER_HOUR)); | |
1848 | else if (d >= USEC_PER_HOUR) | |
1849 | snprintf(buf, l, "%lluh %llumin ago", | |
1850 | (unsigned long long) (d / USEC_PER_HOUR), | |
1851 | (unsigned long long) ((d % USEC_PER_HOUR) / USEC_PER_MINUTE)); | |
1852 | else if (d >= 5*USEC_PER_MINUTE) | |
1853 | snprintf(buf, l, "%llumin ago", | |
1854 | (unsigned long long) (d / USEC_PER_MINUTE)); | |
1855 | else if (d >= USEC_PER_MINUTE) | |
1856 | snprintf(buf, l, "%llumin %llus ago", | |
1857 | (unsigned long long) (d / USEC_PER_MINUTE), | |
1858 | (unsigned long long) ((d % USEC_PER_MINUTE) / USEC_PER_SEC)); | |
1859 | else if (d >= USEC_PER_SEC) | |
1860 | snprintf(buf, l, "%llus ago", | |
1861 | (unsigned long long) (d / USEC_PER_SEC)); | |
1862 | else if (d >= USEC_PER_MSEC) | |
1863 | snprintf(buf, l, "%llums ago", | |
1864 | (unsigned long long) (d / USEC_PER_MSEC)); | |
1865 | else if (d > 0) | |
1866 | snprintf(buf, l, "%lluus ago", | |
1867 | (unsigned long long) d); | |
1868 | else | |
1869 | snprintf(buf, l, "now"); | |
1870 | ||
1871 | buf[l-1] = 0; | |
1872 | return buf; | |
1873 | } | |
1874 | ||
871d7de4 LP |
1875 | char *format_timespan(char *buf, size_t l, usec_t t) { |
1876 | static const struct { | |
1877 | const char *suffix; | |
1878 | usec_t usec; | |
1879 | } table[] = { | |
1880 | { "w", USEC_PER_WEEK }, | |
1881 | { "d", USEC_PER_DAY }, | |
1882 | { "h", USEC_PER_HOUR }, | |
1883 | { "min", USEC_PER_MINUTE }, | |
1884 | { "s", USEC_PER_SEC }, | |
1885 | { "ms", USEC_PER_MSEC }, | |
1886 | { "us", 1 }, | |
1887 | }; | |
1888 | ||
1889 | unsigned i; | |
1890 | char *p = buf; | |
1891 | ||
1892 | assert(buf); | |
1893 | assert(l > 0); | |
1894 | ||
1895 | if (t == (usec_t) -1) | |
1896 | return NULL; | |
1897 | ||
4502d22c LP |
1898 | if (t == 0) { |
1899 | snprintf(p, l, "0"); | |
1900 | p[l-1] = 0; | |
1901 | return p; | |
1902 | } | |
1903 | ||
871d7de4 LP |
1904 | /* The result of this function can be parsed with parse_usec */ |
1905 | ||
1906 | for (i = 0; i < ELEMENTSOF(table); i++) { | |
1907 | int k; | |
1908 | size_t n; | |
1909 | ||
1910 | if (t < table[i].usec) | |
1911 | continue; | |
1912 | ||
1913 | if (l <= 1) | |
1914 | break; | |
1915 | ||
1916 | k = snprintf(p, l, "%s%llu%s", p > buf ? " " : "", (unsigned long long) (t / table[i].usec), table[i].suffix); | |
1917 | n = MIN((size_t) k, l); | |
1918 | ||
1919 | l -= n; | |
1920 | p += n; | |
1921 | ||
1922 | t %= table[i].usec; | |
1923 | } | |
1924 | ||
1925 | *p = 0; | |
1926 | ||
1927 | return buf; | |
1928 | } | |
1929 | ||
42856c10 LP |
1930 | bool fstype_is_network(const char *fstype) { |
1931 | static const char * const table[] = { | |
1932 | "cifs", | |
1933 | "smbfs", | |
1934 | "ncpfs", | |
1935 | "nfs", | |
ca139f94 LP |
1936 | "nfs4", |
1937 | "gfs", | |
1938 | "gfs2" | |
42856c10 LP |
1939 | }; |
1940 | ||
1941 | unsigned i; | |
1942 | ||
1943 | for (i = 0; i < ELEMENTSOF(table); i++) | |
1944 | if (streq(table[i], fstype)) | |
1945 | return true; | |
1946 | ||
1947 | return false; | |
1948 | } | |
1949 | ||
601f6a1e LP |
1950 | int chvt(int vt) { |
1951 | int fd, r = 0; | |
1952 | ||
1953 | if ((fd = open("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC)) < 0) | |
1954 | return -errno; | |
1955 | ||
1956 | if (vt < 0) { | |
1957 | int tiocl[2] = { | |
1958 | TIOCL_GETKMSGREDIRECT, | |
1959 | 0 | |
1960 | }; | |
1961 | ||
1962 | if (ioctl(fd, TIOCLINUX, tiocl) < 0) | |
1963 | return -errno; | |
1964 | ||
1965 | vt = tiocl[0] <= 0 ? 1 : tiocl[0]; | |
1966 | } | |
1967 | ||
1968 | if (ioctl(fd, VT_ACTIVATE, vt) < 0) | |
1969 | r = -errno; | |
1970 | ||
a16e1123 | 1971 | close_nointr_nofail(r); |
601f6a1e LP |
1972 | return r; |
1973 | } | |
1974 | ||
80876c20 LP |
1975 | int read_one_char(FILE *f, char *ret, bool *need_nl) { |
1976 | struct termios old_termios, new_termios; | |
1977 | char c; | |
1978 | char line[1024]; | |
1979 | ||
1980 | assert(f); | |
1981 | assert(ret); | |
1982 | ||
1983 | if (tcgetattr(fileno(f), &old_termios) >= 0) { | |
1984 | new_termios = old_termios; | |
1985 | ||
1986 | new_termios.c_lflag &= ~ICANON; | |
1987 | new_termios.c_cc[VMIN] = 1; | |
1988 | new_termios.c_cc[VTIME] = 0; | |
1989 | ||
1990 | if (tcsetattr(fileno(f), TCSADRAIN, &new_termios) >= 0) { | |
1991 | size_t k; | |
1992 | ||
1993 | k = fread(&c, 1, 1, f); | |
1994 | ||
1995 | tcsetattr(fileno(f), TCSADRAIN, &old_termios); | |
1996 | ||
1997 | if (k <= 0) | |
1998 | return -EIO; | |
1999 | ||
2000 | if (need_nl) | |
2001 | *need_nl = c != '\n'; | |
2002 | ||
2003 | *ret = c; | |
2004 | return 0; | |
2005 | } | |
2006 | } | |
2007 | ||
2008 | if (!(fgets(line, sizeof(line), f))) | |
2009 | return -EIO; | |
2010 | ||
2011 | truncate_nl(line); | |
2012 | ||
2013 | if (strlen(line) != 1) | |
2014 | return -EBADMSG; | |
2015 | ||
2016 | if (need_nl) | |
2017 | *need_nl = false; | |
2018 | ||
2019 | *ret = line[0]; | |
2020 | return 0; | |
2021 | } | |
2022 | ||
2023 | int ask(char *ret, const char *replies, const char *text, ...) { | |
1b39d4b9 LP |
2024 | bool on_tty; |
2025 | ||
80876c20 LP |
2026 | assert(ret); |
2027 | assert(replies); | |
2028 | assert(text); | |
2029 | ||
1b39d4b9 LP |
2030 | on_tty = isatty(STDOUT_FILENO); |
2031 | ||
80876c20 LP |
2032 | for (;;) { |
2033 | va_list ap; | |
2034 | char c; | |
2035 | int r; | |
2036 | bool need_nl = true; | |
2037 | ||
1b39d4b9 LP |
2038 | if (on_tty) |
2039 | fputs("\x1B[1m", stdout); | |
b1b2dc0c | 2040 | |
80876c20 LP |
2041 | va_start(ap, text); |
2042 | vprintf(text, ap); | |
2043 | va_end(ap); | |
2044 | ||
1b39d4b9 LP |
2045 | if (on_tty) |
2046 | fputs("\x1B[0m", stdout); | |
b1b2dc0c | 2047 | |
80876c20 LP |
2048 | fflush(stdout); |
2049 | ||
2050 | if ((r = read_one_char(stdin, &c, &need_nl)) < 0) { | |
2051 | ||
2052 | if (r == -EBADMSG) { | |
2053 | puts("Bad input, please try again."); | |
2054 | continue; | |
2055 | } | |
2056 | ||
2057 | putchar('\n'); | |
2058 | return r; | |
2059 | } | |
2060 | ||
2061 | if (need_nl) | |
2062 | putchar('\n'); | |
2063 | ||
2064 | if (strchr(replies, c)) { | |
2065 | *ret = c; | |
2066 | return 0; | |
2067 | } | |
2068 | ||
2069 | puts("Read unexpected character, please try again."); | |
2070 | } | |
2071 | } | |
2072 | ||
2073 | int reset_terminal(int fd) { | |
2074 | struct termios termios; | |
2075 | int r = 0; | |
3fe5e5d4 LP |
2076 | long arg; |
2077 | ||
2078 | /* Set terminal to some sane defaults */ | |
80876c20 LP |
2079 | |
2080 | assert(fd >= 0); | |
2081 | ||
eed1d0e3 LP |
2082 | /* We leave locked terminal attributes untouched, so that |
2083 | * Plymouth may set whatever it wants to set, and we don't | |
2084 | * interfere with that. */ | |
3fe5e5d4 LP |
2085 | |
2086 | /* Disable exclusive mode, just in case */ | |
2087 | ioctl(fd, TIOCNXCL); | |
2088 | ||
2089 | /* Enable console unicode mode */ | |
2090 | arg = K_UNICODE; | |
2091 | ioctl(fd, KDSKBMODE, &arg); | |
80876c20 LP |
2092 | |
2093 | if (tcgetattr(fd, &termios) < 0) { | |
2094 | r = -errno; | |
2095 | goto finish; | |
2096 | } | |
2097 | ||
aaf694ca LP |
2098 | /* We only reset the stuff that matters to the software. How |
2099 | * hardware is set up we don't touch assuming that somebody | |
2100 | * else will do that for us */ | |
2101 | ||
2102 | termios.c_iflag &= ~(IGNBRK | BRKINT | ISTRIP | INLCR | IGNCR | IUCLC); | |
80876c20 LP |
2103 | termios.c_iflag |= ICRNL | IMAXBEL | IUTF8; |
2104 | termios.c_oflag |= ONLCR; | |
2105 | termios.c_cflag |= CREAD; | |
2106 | termios.c_lflag = ISIG | ICANON | IEXTEN | ECHO | ECHOE | ECHOK | ECHOCTL | ECHOPRT | ECHOKE; | |
2107 | ||
2108 | termios.c_cc[VINTR] = 03; /* ^C */ | |
2109 | termios.c_cc[VQUIT] = 034; /* ^\ */ | |
2110 | termios.c_cc[VERASE] = 0177; | |
2111 | termios.c_cc[VKILL] = 025; /* ^X */ | |
2112 | termios.c_cc[VEOF] = 04; /* ^D */ | |
2113 | termios.c_cc[VSTART] = 021; /* ^Q */ | |
2114 | termios.c_cc[VSTOP] = 023; /* ^S */ | |
2115 | termios.c_cc[VSUSP] = 032; /* ^Z */ | |
2116 | termios.c_cc[VLNEXT] = 026; /* ^V */ | |
2117 | termios.c_cc[VWERASE] = 027; /* ^W */ | |
2118 | termios.c_cc[VREPRINT] = 022; /* ^R */ | |
aaf694ca LP |
2119 | termios.c_cc[VEOL] = 0; |
2120 | termios.c_cc[VEOL2] = 0; | |
80876c20 LP |
2121 | |
2122 | termios.c_cc[VTIME] = 0; | |
2123 | termios.c_cc[VMIN] = 1; | |
2124 | ||
2125 | if (tcsetattr(fd, TCSANOW, &termios) < 0) | |
2126 | r = -errno; | |
2127 | ||
2128 | finish: | |
2129 | /* Just in case, flush all crap out */ | |
2130 | tcflush(fd, TCIOFLUSH); | |
2131 | ||
2132 | return r; | |
2133 | } | |
2134 | ||
2135 | int open_terminal(const char *name, int mode) { | |
2136 | int fd, r; | |
2137 | ||
2138 | if ((fd = open(name, mode)) < 0) | |
2139 | return -errno; | |
2140 | ||
2141 | if ((r = isatty(fd)) < 0) { | |
2142 | close_nointr_nofail(fd); | |
2143 | return -errno; | |
2144 | } | |
2145 | ||
2146 | if (!r) { | |
2147 | close_nointr_nofail(fd); | |
2148 | return -ENOTTY; | |
2149 | } | |
2150 | ||
2151 | return fd; | |
2152 | } | |
2153 | ||
2154 | int flush_fd(int fd) { | |
2155 | struct pollfd pollfd; | |
2156 | ||
2157 | zero(pollfd); | |
2158 | pollfd.fd = fd; | |
2159 | pollfd.events = POLLIN; | |
2160 | ||
2161 | for (;;) { | |
2162 | char buf[1024]; | |
2163 | ssize_t l; | |
2164 | int r; | |
2165 | ||
2166 | if ((r = poll(&pollfd, 1, 0)) < 0) { | |
2167 | ||
2168 | if (errno == EINTR) | |
2169 | continue; | |
2170 | ||
2171 | return -errno; | |
2172 | } | |
2173 | ||
2174 | if (r == 0) | |
2175 | return 0; | |
2176 | ||
2177 | if ((l = read(fd, buf, sizeof(buf))) < 0) { | |
2178 | ||
2179 | if (errno == EINTR) | |
2180 | continue; | |
2181 | ||
2182 | if (errno == EAGAIN) | |
2183 | return 0; | |
2184 | ||
2185 | return -errno; | |
2186 | } | |
2187 | ||
2188 | if (l <= 0) | |
2189 | return 0; | |
2190 | } | |
2191 | } | |
2192 | ||
21de3988 | 2193 | int acquire_terminal(const char *name, bool fail, bool force, bool ignore_tiocstty_eperm) { |
bab45044 | 2194 | int fd = -1, notify = -1, r, wd = -1; |
80876c20 LP |
2195 | |
2196 | assert(name); | |
2197 | ||
2198 | /* We use inotify to be notified when the tty is closed. We | |
2199 | * create the watch before checking if we can actually acquire | |
2200 | * it, so that we don't lose any event. | |
2201 | * | |
2202 | * Note: strictly speaking this actually watches for the | |
2203 | * device being closed, it does *not* really watch whether a | |
2204 | * tty loses its controlling process. However, unless some | |
2205 | * rogue process uses TIOCNOTTY on /dev/tty *after* closing | |
2206 | * its tty otherwise this will not become a problem. As long | |
2207 | * as the administrator makes sure not configure any service | |
2208 | * on the same tty as an untrusted user this should not be a | |
2209 | * problem. (Which he probably should not do anyway.) */ | |
2210 | ||
2211 | if (!fail && !force) { | |
2212 | if ((notify = inotify_init1(IN_CLOEXEC)) < 0) { | |
2213 | r = -errno; | |
2214 | goto fail; | |
2215 | } | |
2216 | ||
2217 | if ((wd = inotify_add_watch(notify, name, IN_CLOSE)) < 0) { | |
2218 | r = -errno; | |
2219 | goto fail; | |
2220 | } | |
2221 | } | |
2222 | ||
2223 | for (;;) { | |
e3d1855b LP |
2224 | if (notify >= 0) |
2225 | if ((r = flush_fd(notify)) < 0) | |
2226 | goto fail; | |
80876c20 LP |
2227 | |
2228 | /* We pass here O_NOCTTY only so that we can check the return | |
2229 | * value TIOCSCTTY and have a reliable way to figure out if we | |
2230 | * successfully became the controlling process of the tty */ | |
2231 | if ((fd = open_terminal(name, O_RDWR|O_NOCTTY)) < 0) | |
2232 | return -errno; | |
2233 | ||
2234 | /* First, try to get the tty */ | |
21de3988 LP |
2235 | r = ioctl(fd, TIOCSCTTY, force); |
2236 | ||
2237 | /* Sometimes it makes sense to ignore TIOCSCTTY | |
2238 | * returning EPERM, i.e. when very likely we already | |
2239 | * are have this controlling terminal. */ | |
2240 | if (r < 0 && errno == EPERM && ignore_tiocstty_eperm) | |
2241 | r = 0; | |
2242 | ||
2243 | if (r < 0 && (force || fail || errno != EPERM)) { | |
80876c20 LP |
2244 | r = -errno; |
2245 | goto fail; | |
2246 | } | |
2247 | ||
2248 | if (r >= 0) | |
2249 | break; | |
2250 | ||
2251 | assert(!fail); | |
2252 | assert(!force); | |
2253 | assert(notify >= 0); | |
2254 | ||
2255 | for (;;) { | |
f601daa7 | 2256 | uint8_t inotify_buffer[sizeof(struct inotify_event) + FILENAME_MAX]; |
80876c20 | 2257 | ssize_t l; |
f601daa7 | 2258 | struct inotify_event *e; |
80876c20 | 2259 | |
f601daa7 | 2260 | if ((l = read(notify, &inotify_buffer, sizeof(inotify_buffer))) < 0) { |
80876c20 | 2261 | |
f601daa7 LP |
2262 | if (errno == EINTR) |
2263 | continue; | |
2264 | ||
2265 | r = -errno; | |
2266 | goto fail; | |
2267 | } | |
2268 | ||
2269 | e = (struct inotify_event*) inotify_buffer; | |
80876c20 | 2270 | |
f601daa7 LP |
2271 | while (l > 0) { |
2272 | size_t step; | |
80876c20 | 2273 | |
f601daa7 | 2274 | if (e->wd != wd || !(e->mask & IN_CLOSE)) { |
80876c20 | 2275 | r = -EIO; |
f601daa7 LP |
2276 | goto fail; |
2277 | } | |
80876c20 | 2278 | |
f601daa7 LP |
2279 | step = sizeof(struct inotify_event) + e->len; |
2280 | assert(step <= (size_t) l); | |
80876c20 | 2281 | |
f601daa7 LP |
2282 | e = (struct inotify_event*) ((uint8_t*) e + step); |
2283 | l -= step; | |
80876c20 LP |
2284 | } |
2285 | ||
2286 | break; | |
2287 | } | |
2288 | ||
2289 | /* We close the tty fd here since if the old session | |
2290 | * ended our handle will be dead. It's important that | |
2291 | * we do this after sleeping, so that we don't enter | |
2292 | * an endless loop. */ | |
2293 | close_nointr_nofail(fd); | |
2294 | } | |
2295 | ||
2296 | if (notify >= 0) | |
a16e1123 | 2297 | close_nointr_nofail(notify); |
80876c20 LP |
2298 | |
2299 | if ((r = reset_terminal(fd)) < 0) | |
2300 | log_warning("Failed to reset terminal: %s", strerror(-r)); | |
2301 | ||
2302 | return fd; | |
2303 | ||
2304 | fail: | |
2305 | if (fd >= 0) | |
a16e1123 | 2306 | close_nointr_nofail(fd); |
80876c20 LP |
2307 | |
2308 | if (notify >= 0) | |
a16e1123 | 2309 | close_nointr_nofail(notify); |
80876c20 LP |
2310 | |
2311 | return r; | |
2312 | } | |
2313 | ||
2314 | int release_terminal(void) { | |
2315 | int r = 0, fd; | |
57cd2192 | 2316 | struct sigaction sa_old, sa_new; |
80876c20 | 2317 | |
57cd2192 | 2318 | if ((fd = open("/dev/tty", O_RDWR|O_NOCTTY|O_NDELAY)) < 0) |
80876c20 LP |
2319 | return -errno; |
2320 | ||
57cd2192 LP |
2321 | /* Temporarily ignore SIGHUP, so that we don't get SIGHUP'ed |
2322 | * by our own TIOCNOTTY */ | |
2323 | ||
2324 | zero(sa_new); | |
2325 | sa_new.sa_handler = SIG_IGN; | |
2326 | sa_new.sa_flags = SA_RESTART; | |
2327 | assert_se(sigaction(SIGHUP, &sa_new, &sa_old) == 0); | |
2328 | ||
80876c20 LP |
2329 | if (ioctl(fd, TIOCNOTTY) < 0) |
2330 | r = -errno; | |
2331 | ||
57cd2192 LP |
2332 | assert_se(sigaction(SIGHUP, &sa_old, NULL) == 0); |
2333 | ||
80876c20 LP |
2334 | close_nointr_nofail(fd); |
2335 | return r; | |
2336 | } | |
2337 | ||
9a34ec5f LP |
2338 | int sigaction_many(const struct sigaction *sa, ...) { |
2339 | va_list ap; | |
2340 | int r = 0, sig; | |
2341 | ||
2342 | va_start(ap, sa); | |
2343 | while ((sig = va_arg(ap, int)) > 0) | |
2344 | if (sigaction(sig, sa, NULL) < 0) | |
2345 | r = -errno; | |
2346 | va_end(ap); | |
2347 | ||
2348 | return r; | |
2349 | } | |
2350 | ||
2351 | int ignore_signals(int sig, ...) { | |
a337c6fc | 2352 | struct sigaction sa; |
9a34ec5f LP |
2353 | va_list ap; |
2354 | int r = 0; | |
a337c6fc LP |
2355 | |
2356 | zero(sa); | |
2357 | sa.sa_handler = SIG_IGN; | |
2358 | sa.sa_flags = SA_RESTART; | |
2359 | ||
9a34ec5f LP |
2360 | if (sigaction(sig, &sa, NULL) < 0) |
2361 | r = -errno; | |
2362 | ||
2363 | va_start(ap, sig); | |
2364 | while ((sig = va_arg(ap, int)) > 0) | |
2365 | if (sigaction(sig, &sa, NULL) < 0) | |
2366 | r = -errno; | |
2367 | va_end(ap); | |
2368 | ||
2369 | return r; | |
2370 | } | |
2371 | ||
2372 | int default_signals(int sig, ...) { | |
2373 | struct sigaction sa; | |
2374 | va_list ap; | |
2375 | int r = 0; | |
2376 | ||
2377 | zero(sa); | |
2378 | sa.sa_handler = SIG_DFL; | |
2379 | sa.sa_flags = SA_RESTART; | |
2380 | ||
2381 | if (sigaction(sig, &sa, NULL) < 0) | |
2382 | r = -errno; | |
2383 | ||
2384 | va_start(ap, sig); | |
2385 | while ((sig = va_arg(ap, int)) > 0) | |
2386 | if (sigaction(sig, &sa, NULL) < 0) | |
2387 | r = -errno; | |
2388 | va_end(ap); | |
2389 | ||
2390 | return r; | |
a337c6fc LP |
2391 | } |
2392 | ||
8d567588 LP |
2393 | int close_pipe(int p[]) { |
2394 | int a = 0, b = 0; | |
2395 | ||
2396 | assert(p); | |
2397 | ||
2398 | if (p[0] >= 0) { | |
2399 | a = close_nointr(p[0]); | |
2400 | p[0] = -1; | |
2401 | } | |
2402 | ||
2403 | if (p[1] >= 0) { | |
2404 | b = close_nointr(p[1]); | |
2405 | p[1] = -1; | |
2406 | } | |
2407 | ||
2408 | return a < 0 ? a : b; | |
2409 | } | |
2410 | ||
eb22ac37 | 2411 | ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll) { |
8d567588 LP |
2412 | uint8_t *p; |
2413 | ssize_t n = 0; | |
2414 | ||
2415 | assert(fd >= 0); | |
2416 | assert(buf); | |
2417 | ||
2418 | p = buf; | |
2419 | ||
2420 | while (nbytes > 0) { | |
2421 | ssize_t k; | |
2422 | ||
2423 | if ((k = read(fd, p, nbytes)) <= 0) { | |
2424 | ||
eb22ac37 | 2425 | if (k < 0 && errno == EINTR) |
8d567588 LP |
2426 | continue; |
2427 | ||
eb22ac37 | 2428 | if (k < 0 && errno == EAGAIN && do_poll) { |
8d567588 LP |
2429 | struct pollfd pollfd; |
2430 | ||
2431 | zero(pollfd); | |
2432 | pollfd.fd = fd; | |
2433 | pollfd.events = POLLIN; | |
2434 | ||
2435 | if (poll(&pollfd, 1, -1) < 0) { | |
2436 | if (errno == EINTR) | |
2437 | continue; | |
2438 | ||
2439 | return n > 0 ? n : -errno; | |
2440 | } | |
2441 | ||
2442 | if (pollfd.revents != POLLIN) | |
2443 | return n > 0 ? n : -EIO; | |
2444 | ||
2445 | continue; | |
2446 | } | |
2447 | ||
2448 | return n > 0 ? n : (k < 0 ? -errno : 0); | |
2449 | } | |
2450 | ||
2451 | p += k; | |
2452 | nbytes -= k; | |
2453 | n += k; | |
2454 | } | |
2455 | ||
2456 | return n; | |
2457 | } | |
2458 | ||
eb22ac37 LP |
2459 | ssize_t loop_write(int fd, const void *buf, size_t nbytes, bool do_poll) { |
2460 | const uint8_t *p; | |
2461 | ssize_t n = 0; | |
2462 | ||
2463 | assert(fd >= 0); | |
2464 | assert(buf); | |
2465 | ||
2466 | p = buf; | |
2467 | ||
2468 | while (nbytes > 0) { | |
2469 | ssize_t k; | |
2470 | ||
2471 | if ((k = write(fd, p, nbytes)) <= 0) { | |
2472 | ||
2473 | if (k < 0 && errno == EINTR) | |
2474 | continue; | |
2475 | ||
2476 | if (k < 0 && errno == EAGAIN && do_poll) { | |
2477 | struct pollfd pollfd; | |
2478 | ||
2479 | zero(pollfd); | |
2480 | pollfd.fd = fd; | |
2481 | pollfd.events = POLLOUT; | |
2482 | ||
2483 | if (poll(&pollfd, 1, -1) < 0) { | |
2484 | if (errno == EINTR) | |
2485 | continue; | |
2486 | ||
2487 | return n > 0 ? n : -errno; | |
2488 | } | |
2489 | ||
2490 | if (pollfd.revents != POLLOUT) | |
2491 | return n > 0 ? n : -EIO; | |
2492 | ||
2493 | continue; | |
2494 | } | |
2495 | ||
2496 | return n > 0 ? n : (k < 0 ? -errno : 0); | |
2497 | } | |
2498 | ||
2499 | p += k; | |
2500 | nbytes -= k; | |
2501 | n += k; | |
2502 | } | |
2503 | ||
2504 | return n; | |
2505 | } | |
2506 | ||
8d567588 LP |
2507 | int path_is_mount_point(const char *t) { |
2508 | struct stat a, b; | |
35d2e7ec LP |
2509 | char *parent; |
2510 | int r; | |
8d567588 LP |
2511 | |
2512 | if (lstat(t, &a) < 0) { | |
8d567588 LP |
2513 | if (errno == ENOENT) |
2514 | return 0; | |
2515 | ||
2516 | return -errno; | |
2517 | } | |
2518 | ||
35d2e7ec LP |
2519 | if ((r = parent_of_path(t, &parent)) < 0) |
2520 | return r; | |
8d567588 | 2521 | |
35d2e7ec LP |
2522 | r = lstat(parent, &b); |
2523 | free(parent); | |
8d567588 | 2524 | |
35d2e7ec LP |
2525 | if (r < 0) |
2526 | return -errno; | |
8d567588 LP |
2527 | |
2528 | return a.st_dev != b.st_dev; | |
2529 | } | |
2530 | ||
24a6e4a4 LP |
2531 | int parse_usec(const char *t, usec_t *usec) { |
2532 | static const struct { | |
2533 | const char *suffix; | |
2534 | usec_t usec; | |
2535 | } table[] = { | |
2536 | { "sec", USEC_PER_SEC }, | |
2537 | { "s", USEC_PER_SEC }, | |
2538 | { "min", USEC_PER_MINUTE }, | |
2539 | { "hr", USEC_PER_HOUR }, | |
2540 | { "h", USEC_PER_HOUR }, | |
2541 | { "d", USEC_PER_DAY }, | |
2542 | { "w", USEC_PER_WEEK }, | |
2543 | { "msec", USEC_PER_MSEC }, | |
2544 | { "ms", USEC_PER_MSEC }, | |
2545 | { "m", USEC_PER_MINUTE }, | |
2546 | { "usec", 1ULL }, | |
2547 | { "us", 1ULL }, | |
2548 | { "", USEC_PER_SEC }, | |
2549 | }; | |
2550 | ||
2551 | const char *p; | |
2552 | usec_t r = 0; | |
2553 | ||
2554 | assert(t); | |
2555 | assert(usec); | |
2556 | ||
2557 | p = t; | |
2558 | do { | |
2559 | long long l; | |
2560 | char *e; | |
2561 | unsigned i; | |
2562 | ||
2563 | errno = 0; | |
2564 | l = strtoll(p, &e, 10); | |
2565 | ||
2566 | if (errno != 0) | |
2567 | return -errno; | |
2568 | ||
2569 | if (l < 0) | |
2570 | return -ERANGE; | |
2571 | ||
2572 | if (e == p) | |
2573 | return -EINVAL; | |
2574 | ||
2575 | e += strspn(e, WHITESPACE); | |
2576 | ||
2577 | for (i = 0; i < ELEMENTSOF(table); i++) | |
2578 | if (startswith(e, table[i].suffix)) { | |
2579 | r += (usec_t) l * table[i].usec; | |
2580 | p = e + strlen(table[i].suffix); | |
2581 | break; | |
2582 | } | |
2583 | ||
2584 | if (i >= ELEMENTSOF(table)) | |
2585 | return -EINVAL; | |
2586 | ||
2587 | } while (*p != 0); | |
2588 | ||
2589 | *usec = r; | |
2590 | ||
2591 | return 0; | |
2592 | } | |
2593 | ||
843d2643 LP |
2594 | int make_stdio(int fd) { |
2595 | int r, s, t; | |
2596 | ||
2597 | assert(fd >= 0); | |
2598 | ||
2599 | r = dup2(fd, STDIN_FILENO); | |
2600 | s = dup2(fd, STDOUT_FILENO); | |
2601 | t = dup2(fd, STDERR_FILENO); | |
2602 | ||
2603 | if (fd >= 3) | |
2604 | close_nointr_nofail(fd); | |
2605 | ||
2606 | if (r < 0 || s < 0 || t < 0) | |
2607 | return -errno; | |
2608 | ||
2609 | return 0; | |
2610 | } | |
2611 | ||
ade509ce LP |
2612 | int make_null_stdio(void) { |
2613 | int null_fd; | |
2614 | ||
2615 | if ((null_fd = open("/dev/null", O_RDWR|O_NOCTTY)) < 0) | |
2616 | return -errno; | |
2617 | ||
2618 | return make_stdio(null_fd); | |
2619 | } | |
2620 | ||
8407a5d0 LP |
2621 | bool is_device_path(const char *path) { |
2622 | ||
2623 | /* Returns true on paths that refer to a device, either in | |
2624 | * sysfs or in /dev */ | |
2625 | ||
2626 | return | |
2627 | path_startswith(path, "/dev/") || | |
2628 | path_startswith(path, "/sys/"); | |
2629 | } | |
2630 | ||
01f78473 LP |
2631 | int dir_is_empty(const char *path) { |
2632 | DIR *d; | |
2633 | int r; | |
2634 | struct dirent buf, *de; | |
2635 | ||
2636 | if (!(d = opendir(path))) | |
2637 | return -errno; | |
2638 | ||
2639 | for (;;) { | |
2640 | if ((r = readdir_r(d, &buf, &de)) > 0) { | |
2641 | r = -r; | |
2642 | break; | |
2643 | } | |
2644 | ||
2645 | if (!de) { | |
2646 | r = 1; | |
2647 | break; | |
2648 | } | |
2649 | ||
2650 | if (!ignore_file(de->d_name)) { | |
2651 | r = 0; | |
2652 | break; | |
2653 | } | |
2654 | } | |
2655 | ||
2656 | closedir(d); | |
2657 | return r; | |
2658 | } | |
2659 | ||
d3782d60 LP |
2660 | unsigned long long random_ull(void) { |
2661 | int fd; | |
2662 | uint64_t ull; | |
2663 | ssize_t r; | |
2664 | ||
2665 | if ((fd = open("/dev/urandom", O_RDONLY|O_CLOEXEC|O_NOCTTY)) < 0) | |
2666 | goto fallback; | |
2667 | ||
eb22ac37 | 2668 | r = loop_read(fd, &ull, sizeof(ull), true); |
d3782d60 LP |
2669 | close_nointr_nofail(fd); |
2670 | ||
2671 | if (r != sizeof(ull)) | |
2672 | goto fallback; | |
2673 | ||
2674 | return ull; | |
2675 | ||
2676 | fallback: | |
2677 | return random() * RAND_MAX + random(); | |
2678 | } | |
2679 | ||
5b6319dc LP |
2680 | void rename_process(const char name[8]) { |
2681 | assert(name); | |
2682 | ||
2683 | prctl(PR_SET_NAME, name); | |
2684 | ||
2685 | /* This is a like a poor man's setproctitle(). The string | |
2686 | * passed should fit in 7 chars (i.e. the length of | |
2687 | * "systemd") */ | |
2688 | ||
2689 | if (program_invocation_name) | |
2690 | strncpy(program_invocation_name, name, strlen(program_invocation_name)); | |
2691 | } | |
2692 | ||
7d793605 LP |
2693 | void sigset_add_many(sigset_t *ss, ...) { |
2694 | va_list ap; | |
2695 | int sig; | |
2696 | ||
2697 | assert(ss); | |
2698 | ||
2699 | va_start(ap, ss); | |
2700 | while ((sig = va_arg(ap, int)) > 0) | |
2701 | assert_se(sigaddset(ss, sig) == 0); | |
2702 | va_end(ap); | |
2703 | } | |
2704 | ||
ef2f1067 LP |
2705 | char* gethostname_malloc(void) { |
2706 | struct utsname u; | |
2707 | ||
2708 | assert_se(uname(&u) >= 0); | |
2709 | ||
2710 | if (u.nodename[0]) | |
2711 | return strdup(u.nodename); | |
2712 | ||
2713 | return strdup(u.sysname); | |
2714 | } | |
2715 | ||
2716 | char* getlogname_malloc(void) { | |
2717 | uid_t uid; | |
2718 | long bufsize; | |
2719 | char *buf, *name; | |
2720 | struct passwd pwbuf, *pw = NULL; | |
2721 | struct stat st; | |
2722 | ||
2723 | if (isatty(STDIN_FILENO) && fstat(STDIN_FILENO, &st) >= 0) | |
2724 | uid = st.st_uid; | |
2725 | else | |
2726 | uid = getuid(); | |
2727 | ||
2728 | /* Shortcut things to avoid NSS lookups */ | |
2729 | if (uid == 0) | |
2730 | return strdup("root"); | |
2731 | ||
2732 | if ((bufsize = sysconf(_SC_GETPW_R_SIZE_MAX)) <= 0) | |
2733 | bufsize = 4096; | |
2734 | ||
2735 | if (!(buf = malloc(bufsize))) | |
2736 | return NULL; | |
2737 | ||
2738 | if (getpwuid_r(uid, &pwbuf, buf, bufsize, &pw) == 0 && pw) { | |
2739 | name = strdup(pw->pw_name); | |
2740 | free(buf); | |
2741 | return name; | |
2742 | } | |
2743 | ||
2744 | free(buf); | |
2745 | ||
2746 | if (asprintf(&name, "%lu", (unsigned long) uid) < 0) | |
2747 | return NULL; | |
2748 | ||
2749 | return name; | |
2750 | } | |
2751 | ||
fc116c6a LP |
2752 | int getttyname_malloc(int fd, char **r) { |
2753 | char path[PATH_MAX], *c; | |
618e02c7 | 2754 | int k; |
8c6db833 LP |
2755 | |
2756 | assert(r); | |
ef2f1067 | 2757 | |
fc116c6a | 2758 | if ((k = ttyname_r(fd, path, sizeof(path))) != 0) |
618e02c7 | 2759 | return -k; |
ef2f1067 LP |
2760 | |
2761 | char_array_0(path); | |
2762 | ||
fc116c6a | 2763 | if (!(c = strdup(startswith(path, "/dev/") ? path + 5 : path))) |
8c6db833 LP |
2764 | return -ENOMEM; |
2765 | ||
2766 | *r = c; | |
2767 | return 0; | |
2768 | } | |
2769 | ||
fc116c6a LP |
2770 | int getttyname_harder(int fd, char **r) { |
2771 | int k; | |
2772 | char *s; | |
2773 | ||
2774 | if ((k = getttyname_malloc(fd, &s)) < 0) | |
2775 | return k; | |
2776 | ||
2777 | if (streq(s, "tty")) { | |
2778 | free(s); | |
2779 | return get_ctty(r); | |
2780 | } | |
2781 | ||
2782 | *r = s; | |
2783 | return 0; | |
2784 | } | |
2785 | ||
2786 | int get_ctty_devnr(dev_t *d) { | |
2787 | int k; | |
2788 | char line[256], *p; | |
2789 | unsigned long ttynr; | |
2790 | FILE *f; | |
2791 | ||
2792 | if (!(f = fopen("/proc/self/stat", "r"))) | |
2793 | return -errno; | |
2794 | ||
2795 | if (!(fgets(line, sizeof(line), f))) { | |
2796 | k = -errno; | |
2797 | fclose(f); | |
2798 | return k; | |
2799 | } | |
2800 | ||
2801 | fclose(f); | |
2802 | ||
2803 | if (!(p = strrchr(line, ')'))) | |
2804 | return -EIO; | |
2805 | ||
2806 | p++; | |
2807 | ||
2808 | if (sscanf(p, " " | |
2809 | "%*c " /* state */ | |
2810 | "%*d " /* ppid */ | |
2811 | "%*d " /* pgrp */ | |
2812 | "%*d " /* session */ | |
2813 | "%lu ", /* ttynr */ | |
2814 | &ttynr) != 1) | |
2815 | return -EIO; | |
2816 | ||
2817 | *d = (dev_t) ttynr; | |
2818 | return 0; | |
2819 | } | |
2820 | ||
2821 | int get_ctty(char **r) { | |
2822 | int k; | |
2823 | char fn[128], *s, *b, *p; | |
2824 | dev_t devnr; | |
2825 | ||
2826 | assert(r); | |
2827 | ||
2828 | if ((k = get_ctty_devnr(&devnr)) < 0) | |
2829 | return k; | |
2830 | ||
2831 | snprintf(fn, sizeof(fn), "/dev/char/%u:%u", major(devnr), minor(devnr)); | |
2832 | char_array_0(fn); | |
2833 | ||
2834 | if ((k = readlink_malloc(fn, &s)) < 0) { | |
2835 | ||
2836 | if (k != -ENOENT) | |
2837 | return k; | |
2838 | ||
2839 | /* Probably something like the ptys which have no | |
2840 | * symlink in /dev/char. Let's return something | |
2841 | * vaguely useful. */ | |
2842 | ||
2843 | if (!(b = strdup(fn + 5))) | |
2844 | return -ENOMEM; | |
2845 | ||
2846 | *r = b; | |
2847 | return 0; | |
2848 | } | |
2849 | ||
2850 | if (startswith(s, "/dev/")) | |
2851 | p = s + 5; | |
2852 | else if (startswith(s, "../")) | |
2853 | p = s + 3; | |
2854 | else | |
2855 | p = s; | |
2856 | ||
2857 | b = strdup(p); | |
2858 | free(s); | |
2859 | ||
2860 | if (!b) | |
2861 | return -ENOMEM; | |
2862 | ||
2863 | *r = b; | |
2864 | return 0; | |
2865 | } | |
2866 | ||
8c6db833 LP |
2867 | static int rm_rf_children(int fd, bool only_dirs) { |
2868 | DIR *d; | |
2869 | int ret = 0; | |
2870 | ||
2871 | assert(fd >= 0); | |
2872 | ||
2873 | /* This returns the first error we run into, but nevertheless | |
2874 | * tries to go on */ | |
2875 | ||
2876 | if (!(d = fdopendir(fd))) { | |
2877 | close_nointr_nofail(fd); | |
4c633005 LP |
2878 | |
2879 | return errno == ENOENT ? 0 : -errno; | |
8c6db833 LP |
2880 | } |
2881 | ||
2882 | for (;;) { | |
2883 | struct dirent buf, *de; | |
2884 | bool is_dir; | |
2885 | int r; | |
2886 | ||
2887 | if ((r = readdir_r(d, &buf, &de)) != 0) { | |
2888 | if (ret == 0) | |
2889 | ret = -r; | |
2890 | break; | |
2891 | } | |
2892 | ||
2893 | if (!de) | |
2894 | break; | |
2895 | ||
2896 | if (streq(de->d_name, ".") || streq(de->d_name, "..")) | |
2897 | continue; | |
2898 | ||
2899 | if (de->d_type == DT_UNKNOWN) { | |
2900 | struct stat st; | |
2901 | ||
2902 | if (fstatat(fd, de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) { | |
4c633005 | 2903 | if (ret == 0 && errno != ENOENT) |
8c6db833 LP |
2904 | ret = -errno; |
2905 | continue; | |
2906 | } | |
2907 | ||
2908 | is_dir = S_ISDIR(st.st_mode); | |
2909 | } else | |
2910 | is_dir = de->d_type == DT_DIR; | |
2911 | ||
2912 | if (is_dir) { | |
2913 | int subdir_fd; | |
2914 | ||
2915 | if ((subdir_fd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC)) < 0) { | |
4c633005 | 2916 | if (ret == 0 && errno != ENOENT) |
8c6db833 LP |
2917 | ret = -errno; |
2918 | continue; | |
2919 | } | |
2920 | ||
2921 | if ((r = rm_rf_children(subdir_fd, only_dirs)) < 0) { | |
2922 | if (ret == 0) | |
2923 | ret = r; | |
2924 | } | |
2925 | ||
2926 | if (unlinkat(fd, de->d_name, AT_REMOVEDIR) < 0) { | |
4c633005 | 2927 | if (ret == 0 && errno != ENOENT) |
8c6db833 LP |
2928 | ret = -errno; |
2929 | } | |
2930 | } else if (!only_dirs) { | |
2931 | ||
2932 | if (unlinkat(fd, de->d_name, 0) < 0) { | |
4c633005 | 2933 | if (ret == 0 && errno != ENOENT) |
8c6db833 LP |
2934 | ret = -errno; |
2935 | } | |
2936 | } | |
2937 | } | |
2938 | ||
2939 | closedir(d); | |
2940 | ||
2941 | return ret; | |
2942 | } | |
2943 | ||
2944 | int rm_rf(const char *path, bool only_dirs, bool delete_root) { | |
2945 | int fd; | |
2946 | int r; | |
2947 | ||
2948 | assert(path); | |
2949 | ||
2950 | if ((fd = open(path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC)) < 0) { | |
2951 | ||
2952 | if (errno != ENOTDIR) | |
2953 | return -errno; | |
2954 | ||
2955 | if (delete_root && !only_dirs) | |
2956 | if (unlink(path) < 0) | |
2957 | return -errno; | |
2958 | ||
2959 | return 0; | |
2960 | } | |
2961 | ||
2962 | r = rm_rf_children(fd, only_dirs); | |
2963 | ||
2964 | if (delete_root) | |
2965 | if (rmdir(path) < 0) { | |
2966 | if (r == 0) | |
2967 | r = -errno; | |
2968 | } | |
2969 | ||
2970 | return r; | |
2971 | } | |
2972 | ||
2973 | int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid) { | |
2974 | assert(path); | |
2975 | ||
2976 | /* Under the assumption that we are running privileged we | |
2977 | * first change the access mode and only then hand out | |
2978 | * ownership to avoid a window where access is too open. */ | |
2979 | ||
2980 | if (chmod(path, mode) < 0) | |
2981 | return -errno; | |
2982 | ||
2983 | if (chown(path, uid, gid) < 0) | |
2984 | return -errno; | |
2985 | ||
2986 | return 0; | |
ef2f1067 LP |
2987 | } |
2988 | ||
82c121a4 LP |
2989 | cpu_set_t* cpu_set_malloc(unsigned *ncpus) { |
2990 | cpu_set_t *r; | |
2991 | unsigned n = 1024; | |
2992 | ||
2993 | /* Allocates the cpuset in the right size */ | |
2994 | ||
2995 | for (;;) { | |
2996 | if (!(r = CPU_ALLOC(n))) | |
2997 | return NULL; | |
2998 | ||
2999 | if (sched_getaffinity(0, CPU_ALLOC_SIZE(n), r) >= 0) { | |
3000 | CPU_ZERO_S(CPU_ALLOC_SIZE(n), r); | |
3001 | ||
3002 | if (ncpus) | |
3003 | *ncpus = n; | |
3004 | ||
3005 | return r; | |
3006 | } | |
3007 | ||
3008 | CPU_FREE(r); | |
3009 | ||
3010 | if (errno != EINVAL) | |
3011 | return NULL; | |
3012 | ||
3013 | n *= 2; | |
3014 | } | |
3015 | } | |
3016 | ||
9e58ff9c LP |
3017 | void status_vprintf(const char *format, va_list ap) { |
3018 | char *s = NULL; | |
3019 | int fd = -1; | |
3020 | ||
3021 | assert(format); | |
3022 | ||
3023 | /* This independent of logging, as status messages are | |
3024 | * optional and go exclusively to the console. */ | |
3025 | ||
3026 | if (vasprintf(&s, format, ap) < 0) | |
3027 | goto finish; | |
3028 | ||
3029 | if ((fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC)) < 0) | |
3030 | goto finish; | |
3031 | ||
3032 | write(fd, s, strlen(s)); | |
3033 | ||
3034 | finish: | |
3035 | free(s); | |
3036 | ||
3037 | if (fd >= 0) | |
3038 | close_nointr_nofail(fd); | |
3039 | } | |
3040 | ||
c846ff47 LP |
3041 | void status_printf(const char *format, ...) { |
3042 | va_list ap; | |
3043 | ||
3044 | assert(format); | |
3045 | ||
3046 | va_start(ap, format); | |
3047 | status_vprintf(format, ap); | |
3048 | va_end(ap); | |
3049 | } | |
3050 | ||
3051 | void status_welcome(void) { | |
10aa7034 LP |
3052 | char *pretty_name = NULL, *ansi_color = NULL; |
3053 | const char *const_pretty = NULL, *const_color = NULL; | |
3054 | int r; | |
c846ff47 | 3055 | |
10aa7034 LP |
3056 | if ((r = parse_env_file("/etc/os-release", NEWLINE, |
3057 | "PRETTY_NAME", &pretty_name, | |
3058 | "ANSI_COLOR", &ansi_color, | |
3059 | NULL)) < 0) { | |
c846ff47 | 3060 | |
10aa7034 LP |
3061 | if (r != -ENOENT) |
3062 | log_warning("Failed to read /etc/os-release: %s", strerror(-r)); | |
3063 | } | |
c846ff47 | 3064 | |
10aa7034 LP |
3065 | #if defined(TARGET_FEDORA) |
3066 | if (!pretty_name) { | |
3067 | if ((r = read_one_line_file("/etc/system-release", &pretty_name)) < 0) { | |
c846ff47 | 3068 | |
10aa7034 LP |
3069 | if (r != -ENOENT) |
3070 | log_warning("Failed to read /etc/system-release: %s", strerror(-r)); | |
3071 | } else | |
3072 | truncate_nl(pretty_name); | |
3073 | } | |
c846ff47 | 3074 | |
10aa7034 | 3075 | if (!ansi_color && pretty_name) { |
c846ff47 | 3076 | |
10aa7034 LP |
3077 | /* This tries to mimic the color magic the old Red Hat sysinit |
3078 | * script did. */ | |
3079 | ||
3080 | if (startswith(pretty_name, "Red Hat")) | |
3081 | const_color = "0;31"; /* Red for RHEL */ | |
3082 | else if (startswith(pretty_name, "Fedora")) | |
3083 | const_color = "0;34"; /* Blue for Fedora */ | |
3084 | } | |
c846ff47 LP |
3085 | |
3086 | #elif defined(TARGET_SUSE) | |
c846ff47 | 3087 | |
10aa7034 LP |
3088 | if (!pretty_name) { |
3089 | if ((r = read_one_line_file("/etc/SuSE-release", &pretty_name)) < 0) { | |
c846ff47 | 3090 | |
10aa7034 LP |
3091 | if (r != -ENOENT) |
3092 | log_warning("Failed to read /etc/SuSE-release: %s", strerror(-r)); | |
3093 | } else | |
3094 | truncate_nl(pretty_name); | |
3095 | } | |
c846ff47 | 3096 | |
10aa7034 LP |
3097 | if (!ansi_color) |
3098 | const_color = "0;32"; /* Green for openSUSE */ | |
5a6225fd | 3099 | |
0d37b36b | 3100 | #elif defined(TARGET_GENTOO) |
0d37b36b | 3101 | |
10aa7034 LP |
3102 | if (!pretty_name) { |
3103 | if ((r = read_one_line_file("/etc/gentoo-release", &pretty_name)) < 0) { | |
0d37b36b | 3104 | |
10aa7034 LP |
3105 | if (r != -ENOENT) |
3106 | log_warning("Failed to read /etc/gentoo-release: %s", strerror(-r)); | |
3107 | } else | |
3108 | truncate_nl(pretty_name); | |
3109 | } | |
0d37b36b | 3110 | |
10aa7034 LP |
3111 | if (!ansi_color) |
3112 | const_color = "1;34"; /* Light Blue for Gentoo */ | |
5a6225fd | 3113 | |
a338bab5 AS |
3114 | #elif defined(TARGET_ALTLINUX) |
3115 | ||
3116 | if (!pretty_name) { | |
3117 | if ((r = read_one_line_file("/etc/altlinux-release", &pretty_name)) < 0) { | |
3118 | ||
3119 | if (r != -ENOENT) | |
3120 | log_warning("Failed to read /etc/altlinux-release: %s", strerror(-r)); | |
3121 | } else | |
3122 | truncate_nl(pretty_name); | |
3123 | } | |
3124 | ||
3125 | if (!ansi_color) | |
3126 | const_color = "0;36"; /* Cyan for ALTLinux */ | |
3127 | ||
3128 | ||
5a6225fd | 3129 | #elif defined(TARGET_DEBIAN) |
5a6225fd | 3130 | |
10aa7034 | 3131 | if (!pretty_name) { |
22927a36 | 3132 | char *version; |
c8bffa43 | 3133 | |
22927a36 | 3134 | if ((r = read_one_line_file("/etc/debian_version", &version)) < 0) { |
5a6225fd | 3135 | |
10aa7034 LP |
3136 | if (r != -ENOENT) |
3137 | log_warning("Failed to read /etc/debian_version: %s", strerror(-r)); | |
22927a36 MB |
3138 | } else { |
3139 | truncate_nl(version); | |
3140 | pretty_name = strappend("Debian ", version); | |
3141 | free(version); | |
c8bffa43 LP |
3142 | |
3143 | if (!pretty_name) | |
3144 | log_warning("Failed to allocate Debian version string."); | |
22927a36 | 3145 | } |
10aa7034 | 3146 | } |
5a6225fd | 3147 | |
10aa7034 LP |
3148 | if (!ansi_color) |
3149 | const_color = "1;31"; /* Light Red for Debian */ | |
5a6225fd | 3150 | |
274914f9 | 3151 | #elif defined(TARGET_UBUNTU) |
10aa7034 LP |
3152 | |
3153 | if ((r = parse_env_file("/etc/lsb-release", NEWLINE, | |
3154 | "DISTRIB_DESCRIPTION", &pretty_name, | |
3155 | NULL)) < 0) { | |
3156 | ||
3157 | if (r != -ENOENT) | |
3158 | log_warning("Failed to read /etc/lsb-release: %s", strerror(-r)); | |
3159 | } | |
3160 | ||
3161 | if (!ansi_color) | |
3162 | const_color = "0;33"; /* Orange/Brown for Ubuntu */ | |
3163 | ||
c846ff47 | 3164 | #endif |
10aa7034 LP |
3165 | |
3166 | if (!pretty_name && !const_pretty) | |
3167 | const_pretty = "Linux"; | |
3168 | ||
3169 | if (!ansi_color && !const_color) | |
3170 | const_color = "1"; | |
3171 | ||
da71f23c | 3172 | status_printf("\nWelcome to \x1B[%sm%s\x1B[0m!\n\n", |
10aa7034 LP |
3173 | const_color ? const_color : ansi_color, |
3174 | const_pretty ? const_pretty : pretty_name); | |
86a3475b LP |
3175 | |
3176 | free(ansi_color); | |
3177 | free(pretty_name); | |
c846ff47 LP |
3178 | } |
3179 | ||
fab56fc5 LP |
3180 | char *replace_env(const char *format, char **env) { |
3181 | enum { | |
3182 | WORD, | |
c24eb49e | 3183 | CURLY, |
fab56fc5 LP |
3184 | VARIABLE |
3185 | } state = WORD; | |
3186 | ||
3187 | const char *e, *word = format; | |
3188 | char *r = NULL, *k; | |
3189 | ||
3190 | assert(format); | |
3191 | ||
3192 | for (e = format; *e; e ++) { | |
3193 | ||
3194 | switch (state) { | |
3195 | ||
3196 | case WORD: | |
3197 | if (*e == '$') | |
c24eb49e | 3198 | state = CURLY; |
fab56fc5 LP |
3199 | break; |
3200 | ||
c24eb49e LP |
3201 | case CURLY: |
3202 | if (*e == '{') { | |
fab56fc5 LP |
3203 | if (!(k = strnappend(r, word, e-word-1))) |
3204 | goto fail; | |
3205 | ||
3206 | free(r); | |
3207 | r = k; | |
3208 | ||
3209 | word = e-1; | |
3210 | state = VARIABLE; | |
3211 | ||
3212 | } else if (*e == '$') { | |
3213 | if (!(k = strnappend(r, word, e-word))) | |
3214 | goto fail; | |
3215 | ||
3216 | free(r); | |
3217 | r = k; | |
3218 | ||
3219 | word = e+1; | |
3220 | state = WORD; | |
3221 | } else | |
3222 | state = WORD; | |
3223 | break; | |
3224 | ||
3225 | case VARIABLE: | |
c24eb49e | 3226 | if (*e == '}') { |
b95cf362 | 3227 | const char *t; |
fab56fc5 | 3228 | |
b95cf362 LP |
3229 | if (!(t = strv_env_get_with_length(env, word+2, e-word-2))) |
3230 | t = ""; | |
fab56fc5 | 3231 | |
b95cf362 LP |
3232 | if (!(k = strappend(r, t))) |
3233 | goto fail; | |
fab56fc5 | 3234 | |
b95cf362 LP |
3235 | free(r); |
3236 | r = k; | |
fab56fc5 | 3237 | |
b95cf362 | 3238 | word = e+1; |
fab56fc5 LP |
3239 | state = WORD; |
3240 | } | |
3241 | break; | |
3242 | } | |
3243 | } | |
3244 | ||
3245 | if (!(k = strnappend(r, word, e-word))) | |
3246 | goto fail; | |
3247 | ||
3248 | free(r); | |
3249 | return k; | |
3250 | ||
3251 | fail: | |
3252 | free(r); | |
3253 | return NULL; | |
3254 | } | |
3255 | ||
3256 | char **replace_env_argv(char **argv, char **env) { | |
3257 | char **r, **i; | |
c24eb49e LP |
3258 | unsigned k = 0, l = 0; |
3259 | ||
3260 | l = strv_length(argv); | |
fab56fc5 | 3261 | |
c24eb49e | 3262 | if (!(r = new(char*, l+1))) |
fab56fc5 LP |
3263 | return NULL; |
3264 | ||
3265 | STRV_FOREACH(i, argv) { | |
c24eb49e LP |
3266 | |
3267 | /* If $FOO appears as single word, replace it by the split up variable */ | |
b95cf362 LP |
3268 | if ((*i)[0] == '$' && (*i)[1] != '{') { |
3269 | char *e; | |
3270 | char **w, **m; | |
3271 | unsigned q; | |
c24eb49e | 3272 | |
b95cf362 | 3273 | if ((e = strv_env_get(env, *i+1))) { |
c24eb49e LP |
3274 | |
3275 | if (!(m = strv_split_quoted(e))) { | |
3276 | r[k] = NULL; | |
3277 | strv_free(r); | |
3278 | return NULL; | |
3279 | } | |
b95cf362 LP |
3280 | } else |
3281 | m = NULL; | |
c24eb49e | 3282 | |
b95cf362 LP |
3283 | q = strv_length(m); |
3284 | l = l + q - 1; | |
c24eb49e | 3285 | |
b95cf362 LP |
3286 | if (!(w = realloc(r, sizeof(char*) * (l+1)))) { |
3287 | r[k] = NULL; | |
3288 | strv_free(r); | |
3289 | strv_free(m); | |
3290 | return NULL; | |
3291 | } | |
c24eb49e | 3292 | |
b95cf362 LP |
3293 | r = w; |
3294 | if (m) { | |
c24eb49e LP |
3295 | memcpy(r + k, m, q * sizeof(char*)); |
3296 | free(m); | |
c24eb49e | 3297 | } |
b95cf362 LP |
3298 | |
3299 | k += q; | |
3300 | continue; | |
c24eb49e LP |
3301 | } |
3302 | ||
3303 | /* If ${FOO} appears as part of a word, replace it by the variable as-is */ | |
fab56fc5 LP |
3304 | if (!(r[k++] = replace_env(*i, env))) { |
3305 | strv_free(r); | |
3306 | return NULL; | |
3307 | } | |
3308 | } | |
3309 | ||
3310 | r[k] = NULL; | |
3311 | return r; | |
3312 | } | |
3313 | ||
fa776d8e LP |
3314 | int columns(void) { |
3315 | static __thread int parsed_columns = 0; | |
3316 | const char *e; | |
3317 | ||
3318 | if (parsed_columns > 0) | |
3319 | return parsed_columns; | |
3320 | ||
3321 | if ((e = getenv("COLUMNS"))) | |
3322 | parsed_columns = atoi(e); | |
3323 | ||
3324 | if (parsed_columns <= 0) { | |
3325 | struct winsize ws; | |
3326 | zero(ws); | |
3327 | ||
9ed95f43 | 3328 | if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) >= 0) |
fa776d8e LP |
3329 | parsed_columns = ws.ws_col; |
3330 | } | |
3331 | ||
3332 | if (parsed_columns <= 0) | |
3333 | parsed_columns = 80; | |
3334 | ||
3335 | return parsed_columns; | |
3336 | } | |
3337 | ||
b4f10a5e LP |
3338 | int running_in_chroot(void) { |
3339 | struct stat a, b; | |
3340 | ||
3341 | zero(a); | |
3342 | zero(b); | |
3343 | ||
3344 | /* Only works as root */ | |
3345 | ||
3346 | if (stat("/proc/1/root", &a) < 0) | |
3347 | return -errno; | |
3348 | ||
3349 | if (stat("/", &b) < 0) | |
3350 | return -errno; | |
3351 | ||
3352 | return | |
3353 | a.st_dev != b.st_dev || | |
3354 | a.st_ino != b.st_ino; | |
3355 | } | |
3356 | ||
8fe914ec LP |
3357 | char *ellipsize(const char *s, unsigned length, unsigned percent) { |
3358 | size_t l, x; | |
3359 | char *r; | |
3360 | ||
3361 | assert(s); | |
3362 | assert(percent <= 100); | |
3363 | assert(length >= 3); | |
3364 | ||
3365 | l = strlen(s); | |
3366 | ||
3367 | if (l <= 3 || l <= length) | |
3368 | return strdup(s); | |
3369 | ||
3370 | if (!(r = new0(char, length+1))) | |
3371 | return r; | |
3372 | ||
3373 | x = (length * percent) / 100; | |
3374 | ||
3375 | if (x > length - 3) | |
3376 | x = length - 3; | |
3377 | ||
3378 | memcpy(r, s, x); | |
3379 | r[x] = '.'; | |
3380 | r[x+1] = '.'; | |
3381 | r[x+2] = '.'; | |
3382 | memcpy(r + x + 3, | |
3383 | s + l - (length - x - 3), | |
3384 | length - x - 3); | |
3385 | ||
3386 | return r; | |
3387 | } | |
3388 | ||
f6144808 LP |
3389 | int touch(const char *path) { |
3390 | int fd; | |
3391 | ||
3392 | assert(path); | |
3393 | ||
3394 | if ((fd = open(path, O_WRONLY|O_CREAT|O_CLOEXEC|O_NOCTTY, 0666)) < 0) | |
3395 | return -errno; | |
3396 | ||
3397 | close_nointr_nofail(fd); | |
3398 | return 0; | |
3399 | } | |
afea26ad | 3400 | |
97c4a07d | 3401 | char *unquote(const char *s, const char* quotes) { |
11ce3427 LP |
3402 | size_t l; |
3403 | assert(s); | |
3404 | ||
3405 | if ((l = strlen(s)) < 2) | |
3406 | return strdup(s); | |
3407 | ||
97c4a07d | 3408 | if (strchr(quotes, s[0]) && s[l-1] == s[0]) |
11ce3427 LP |
3409 | return strndup(s+1, l-2); |
3410 | ||
3411 | return strdup(s); | |
3412 | } | |
3413 | ||
5f7c426e LP |
3414 | char *normalize_env_assignment(const char *s) { |
3415 | char *name, *value, *p, *r; | |
3416 | ||
3417 | p = strchr(s, '='); | |
3418 | ||
3419 | if (!p) { | |
3420 | if (!(r = strdup(s))) | |
3421 | return NULL; | |
3422 | ||
3423 | return strstrip(r); | |
3424 | } | |
3425 | ||
3426 | if (!(name = strndup(s, p - s))) | |
3427 | return NULL; | |
3428 | ||
3429 | if (!(p = strdup(p+1))) { | |
3430 | free(name); | |
3431 | return NULL; | |
3432 | } | |
3433 | ||
3434 | value = unquote(strstrip(p), QUOTES); | |
3435 | free(p); | |
3436 | ||
3437 | if (!value) { | |
3438 | free(p); | |
3439 | free(name); | |
3440 | return NULL; | |
3441 | } | |
3442 | ||
3443 | if (asprintf(&r, "%s=%s", name, value) < 0) | |
3444 | r = NULL; | |
3445 | ||
3446 | free(value); | |
3447 | free(name); | |
3448 | ||
3449 | return r; | |
3450 | } | |
3451 | ||
8e12a6ae | 3452 | int wait_for_terminate(pid_t pid, siginfo_t *status) { |
2e78aa99 LP |
3453 | assert(pid >= 1); |
3454 | assert(status); | |
3455 | ||
3456 | for (;;) { | |
8e12a6ae LP |
3457 | zero(*status); |
3458 | ||
3459 | if (waitid(P_PID, pid, status, WEXITED) < 0) { | |
2e78aa99 LP |
3460 | |
3461 | if (errno == EINTR) | |
3462 | continue; | |
3463 | ||
3464 | return -errno; | |
3465 | } | |
3466 | ||
3467 | return 0; | |
3468 | } | |
3469 | } | |
3470 | ||
97c4a07d LP |
3471 | int wait_for_terminate_and_warn(const char *name, pid_t pid) { |
3472 | int r; | |
3473 | siginfo_t status; | |
3474 | ||
3475 | assert(name); | |
3476 | assert(pid > 1); | |
3477 | ||
3478 | if ((r = wait_for_terminate(pid, &status)) < 0) { | |
3479 | log_warning("Failed to wait for %s: %s", name, strerror(-r)); | |
3480 | return r; | |
3481 | } | |
3482 | ||
3483 | if (status.si_code == CLD_EXITED) { | |
3484 | if (status.si_status != 0) { | |
3485 | log_warning("%s failed with error code %i.", name, status.si_status); | |
3486 | return -EPROTO; | |
3487 | } | |
3488 | ||
3489 | log_debug("%s succeeded.", name); | |
3490 | return 0; | |
3491 | ||
3492 | } else if (status.si_code == CLD_KILLED || | |
3493 | status.si_code == CLD_DUMPED) { | |
3494 | ||
3495 | log_warning("%s terminated by signal %s.", name, signal_to_string(status.si_status)); | |
3496 | return -EPROTO; | |
3497 | } | |
3498 | ||
3499 | log_warning("%s failed due to unknown reason.", name); | |
3500 | return -EPROTO; | |
3501 | ||
3502 | } | |
3503 | ||
3c14d26c | 3504 | void freeze(void) { |
c29597a1 LP |
3505 | sync(); |
3506 | ||
3c14d26c LP |
3507 | for (;;) |
3508 | pause(); | |
3509 | } | |
3510 | ||
00dc5d76 LP |
3511 | bool null_or_empty(struct stat *st) { |
3512 | assert(st); | |
3513 | ||
3514 | if (S_ISREG(st->st_mode) && st->st_size <= 0) | |
3515 | return true; | |
3516 | ||
c8f26f42 | 3517 | if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) |
00dc5d76 LP |
3518 | return true; |
3519 | ||
3520 | return false; | |
3521 | } | |
3522 | ||
a247755d | 3523 | DIR *xopendirat(int fd, const char *name, int flags) { |
c4731d11 LP |
3524 | int nfd; |
3525 | DIR *d; | |
3526 | ||
3527 | if ((nfd = openat(fd, name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|flags)) < 0) | |
3528 | return NULL; | |
3529 | ||
3530 | if (!(d = fdopendir(nfd))) { | |
3531 | close_nointr_nofail(nfd); | |
3532 | return NULL; | |
3533 | } | |
3534 | ||
3535 | return d; | |
3b63d2d3 LP |
3536 | } |
3537 | ||
8a0867d6 LP |
3538 | int signal_from_string_try_harder(const char *s) { |
3539 | int signo; | |
3540 | assert(s); | |
3541 | ||
3542 | if ((signo = signal_from_string(s)) <= 0) | |
3543 | if (startswith(s, "SIG")) | |
3544 | return signal_from_string(s+3); | |
3545 | ||
3546 | return signo; | |
3547 | } | |
3548 | ||
10717a1a LP |
3549 | void dual_timestamp_serialize(FILE *f, const char *name, dual_timestamp *t) { |
3550 | ||
3551 | assert(f); | |
3552 | assert(name); | |
3553 | assert(t); | |
3554 | ||
3555 | if (!dual_timestamp_is_set(t)) | |
3556 | return; | |
3557 | ||
3558 | fprintf(f, "%s=%llu %llu\n", | |
3559 | name, | |
3560 | (unsigned long long) t->realtime, | |
3561 | (unsigned long long) t->monotonic); | |
3562 | } | |
3563 | ||
799fd0fd | 3564 | void dual_timestamp_deserialize(const char *value, dual_timestamp *t) { |
10717a1a LP |
3565 | unsigned long long a, b; |
3566 | ||
10717a1a LP |
3567 | assert(value); |
3568 | assert(t); | |
3569 | ||
3570 | if (sscanf(value, "%lli %llu", &a, &b) != 2) | |
3571 | log_debug("Failed to parse finish timestamp value %s", value); | |
3572 | else { | |
3573 | t->realtime = a; | |
3574 | t->monotonic = b; | |
3575 | } | |
3576 | } | |
3577 | ||
e23a0ce8 LP |
3578 | char *fstab_node_to_udev_node(const char *p) { |
3579 | char *dn, *t, *u; | |
3580 | int r; | |
3581 | ||
3582 | /* FIXME: to follow udev's logic 100% we need to leave valid | |
3583 | * UTF8 chars unescaped */ | |
3584 | ||
3585 | if (startswith(p, "LABEL=")) { | |
3586 | ||
3587 | if (!(u = unquote(p+6, "\"\'"))) | |
3588 | return NULL; | |
3589 | ||
3590 | t = xescape(u, "/ "); | |
3591 | free(u); | |
3592 | ||
3593 | if (!t) | |
3594 | return NULL; | |
3595 | ||
3596 | r = asprintf(&dn, "/dev/disk/by-label/%s", t); | |
3597 | free(t); | |
3598 | ||
3599 | if (r < 0) | |
3600 | return NULL; | |
3601 | ||
3602 | return dn; | |
3603 | } | |
3604 | ||
3605 | if (startswith(p, "UUID=")) { | |
3606 | ||
3607 | if (!(u = unquote(p+5, "\"\'"))) | |
3608 | return NULL; | |
3609 | ||
3610 | t = xescape(u, "/ "); | |
3611 | free(u); | |
3612 | ||
3613 | if (!t) | |
3614 | return NULL; | |
3615 | ||
0058d7b9 | 3616 | r = asprintf(&dn, "/dev/disk/by-uuid/%s", t); |
e23a0ce8 LP |
3617 | free(t); |
3618 | ||
3619 | if (r < 0) | |
3620 | return NULL; | |
3621 | ||
3622 | return dn; | |
3623 | } | |
3624 | ||
3625 | return strdup(p); | |
3626 | } | |
3627 | ||
e9ddabc2 LP |
3628 | void filter_environ(const char *prefix) { |
3629 | int i, j; | |
3630 | assert(prefix); | |
3631 | ||
3632 | if (!environ) | |
3633 | return; | |
3634 | ||
3635 | for (i = 0, j = 0; environ[i]; i++) { | |
3636 | ||
3637 | if (startswith(environ[i], prefix)) | |
3638 | continue; | |
3639 | ||
3640 | environ[j++] = environ[i]; | |
3641 | } | |
3642 | ||
3643 | environ[j] = NULL; | |
3644 | } | |
3645 | ||
f212ac12 LP |
3646 | bool tty_is_vc(const char *tty) { |
3647 | assert(tty); | |
3648 | ||
3649 | if (startswith(tty, "/dev/")) | |
3650 | tty += 5; | |
3651 | ||
3652 | return startswith(tty, "tty") && | |
3653 | tty[3] >= '0' && tty[3] <= '9'; | |
3654 | } | |
3655 | ||
e3aa71c3 | 3656 | const char *default_term_for_tty(const char *tty) { |
3030ccd7 LP |
3657 | char *active = NULL; |
3658 | const char *term; | |
3659 | ||
e3aa71c3 LP |
3660 | assert(tty); |
3661 | ||
3662 | if (startswith(tty, "/dev/")) | |
3663 | tty += 5; | |
3664 | ||
3030ccd7 LP |
3665 | /* Resolve where /dev/console is pointing when determining |
3666 | * TERM */ | |
3667 | if (streq(tty, "console")) | |
3668 | if (read_one_line_file("/sys/class/tty/console/active", &active) >= 0) { | |
3669 | truncate_nl(active); | |
079a09fb LP |
3670 | |
3671 | /* If multiple log outputs are configured the | |
3672 | * last one is what /dev/console points to */ | |
3673 | if ((tty = strrchr(active, ' '))) | |
3674 | tty++; | |
3675 | else | |
3676 | tty = active; | |
3030ccd7 LP |
3677 | } |
3678 | ||
f212ac12 | 3679 | term = tty_is_vc(tty) ? "TERM=linux" : "TERM=vt100"; |
3030ccd7 | 3680 | free(active); |
e3aa71c3 | 3681 | |
3030ccd7 | 3682 | return term; |
e3aa71c3 LP |
3683 | } |
3684 | ||
46a08e38 LP |
3685 | bool running_in_vm(void) { |
3686 | ||
3687 | #if defined(__i386__) || defined(__x86_64__) | |
3688 | ||
3689 | /* Both CPUID and DMI are x86 specific interfaces... */ | |
3690 | ||
3691 | const char *const dmi_vendors[] = { | |
3692 | "/sys/class/dmi/id/sys_vendor", | |
3693 | "/sys/class/dmi/id/board_vendor", | |
3694 | "/sys/class/dmi/id/bios_vendor" | |
3695 | }; | |
3696 | ||
3697 | uint32_t eax = 0x40000000; | |
3698 | union { | |
3699 | uint32_t sig32[3]; | |
3700 | char text[13]; | |
3701 | } sig; | |
3702 | ||
3703 | unsigned i; | |
3704 | ||
3705 | for (i = 0; i < ELEMENTSOF(dmi_vendors); i++) { | |
3706 | char *s; | |
3707 | bool b; | |
3708 | ||
3709 | if (read_one_line_file(dmi_vendors[i], &s) < 0) | |
3710 | continue; | |
3711 | ||
3712 | b = startswith(s, "QEMU") || | |
3713 | /* http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1009458 */ | |
3714 | startswith(s, "VMware") || | |
3715 | startswith(s, "VMW") || | |
3716 | startswith(s, "Microsoft Corporation") || | |
3717 | startswith(s, "innotek GmbH") || | |
3718 | startswith(s, "Xen"); | |
3719 | ||
3720 | free(s); | |
3721 | ||
3722 | if (b) | |
3723 | return true; | |
3724 | } | |
3725 | ||
3726 | /* http://lwn.net/Articles/301888/ */ | |
3727 | zero(sig); | |
3728 | ||
3729 | ||
3730 | #if defined (__i386__) | |
3731 | #define REG_a "eax" | |
3732 | #define REG_b "ebx" | |
3733 | #elif defined (__amd64__) | |
3734 | #define REG_a "rax" | |
3735 | #define REG_b "rbx" | |
3736 | #endif | |
3737 | ||
3738 | __asm__ __volatile__ ( | |
3739 | /* ebx/rbx is being used for PIC! */ | |
3740 | " push %%"REG_b" \n\t" | |
3741 | " cpuid \n\t" | |
3742 | " mov %%ebx, %1 \n\t" | |
3743 | " pop %%"REG_b" \n\t" | |
3744 | ||
3745 | : "=a" (eax), "=r" (sig.sig32[0]), "=c" (sig.sig32[1]), "=d" (sig.sig32[2]) | |
3746 | : "0" (eax) | |
3747 | ); | |
3748 | ||
3749 | if (streq(sig.text, "XenVMMXenVMM") || | |
3750 | streq(sig.text, "KVMKVMKVM") || | |
3751 | /* http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1009458 */ | |
3752 | streq(sig.text, "VMwareVMware") || | |
3753 | /* http://msdn.microsoft.com/en-us/library/bb969719.aspx */ | |
3754 | streq(sig.text, "Microsoft Hv")) | |
3755 | return true; | |
3756 | #endif | |
3757 | ||
3758 | return false; | |
3759 | } | |
3760 | ||
83cc030f LP |
3761 | void execute_directory(const char *directory, DIR *d, char *argv[]) { |
3762 | DIR *_d = NULL; | |
3763 | struct dirent *de; | |
3764 | Hashmap *pids = NULL; | |
3765 | ||
3766 | assert(directory); | |
3767 | ||
3768 | /* Executes all binaries in a directory in parallel and waits | |
3769 | * until all they all finished. */ | |
3770 | ||
3771 | if (!d) { | |
3772 | if (!(_d = opendir(directory))) { | |
3773 | ||
3774 | if (errno == ENOENT) | |
3775 | return; | |
3776 | ||
3777 | log_error("Failed to enumerate directory %s: %m", directory); | |
3778 | return; | |
3779 | } | |
3780 | ||
3781 | d = _d; | |
3782 | } | |
3783 | ||
3784 | if (!(pids = hashmap_new(trivial_hash_func, trivial_compare_func))) { | |
3785 | log_error("Failed to allocate set."); | |
3786 | goto finish; | |
3787 | } | |
3788 | ||
3789 | while ((de = readdir(d))) { | |
3790 | char *path; | |
3791 | pid_t pid; | |
3792 | int k; | |
3793 | ||
3794 | if (ignore_file(de->d_name)) | |
3795 | continue; | |
3796 | ||
3797 | if (de->d_type != DT_REG && | |
3798 | de->d_type != DT_LNK && | |
3799 | de->d_type != DT_UNKNOWN) | |
3800 | continue; | |
3801 | ||
3802 | if (asprintf(&path, "%s/%s", directory, de->d_name) < 0) { | |
3803 | log_error("Out of memory"); | |
3804 | continue; | |
3805 | } | |
3806 | ||
3807 | if ((pid = fork()) < 0) { | |
3808 | log_error("Failed to fork: %m"); | |
3809 | free(path); | |
3810 | continue; | |
3811 | } | |
3812 | ||
3813 | if (pid == 0) { | |
3814 | char *_argv[2]; | |
3815 | /* Child */ | |
3816 | ||
3817 | if (!argv) { | |
3818 | _argv[0] = path; | |
3819 | _argv[1] = NULL; | |
3820 | argv = _argv; | |
3821 | } else | |
3822 | if (!argv[0]) | |
3823 | argv[0] = path; | |
3824 | ||
3825 | execv(path, argv); | |
3826 | ||
3827 | log_error("Failed to execute %s: %m", path); | |
3828 | _exit(EXIT_FAILURE); | |
3829 | } | |
3830 | ||
3831 | log_debug("Spawned %s as %lu", path, (unsigned long) pid); | |
3832 | ||
3833 | if ((k = hashmap_put(pids, UINT_TO_PTR(pid), path)) < 0) { | |
3834 | log_error("Failed to add PID to set: %s", strerror(-k)); | |
3835 | free(path); | |
3836 | } | |
3837 | } | |
3838 | ||
3839 | while (!hashmap_isempty(pids)) { | |
3840 | siginfo_t si; | |
3841 | char *path; | |
3842 | ||
3843 | zero(si); | |
3844 | if (waitid(P_ALL, 0, &si, WEXITED) < 0) { | |
3845 | ||
3846 | if (errno == EINTR) | |
3847 | continue; | |
3848 | ||
3849 | log_error("waitid() failed: %m"); | |
3850 | goto finish; | |
3851 | } | |
3852 | ||
3853 | if ((path = hashmap_remove(pids, UINT_TO_PTR(si.si_pid)))) { | |
3854 | if (!is_clean_exit(si.si_code, si.si_status)) { | |
3855 | if (si.si_code == CLD_EXITED) | |
3856 | log_error("%s exited with exit status %i.", path, si.si_status); | |
3857 | else | |
3858 | log_error("%s terminated by signal %s.", path, signal_to_string(si.si_status)); | |
3859 | } else | |
3860 | log_debug("%s exited successfully.", path); | |
3861 | ||
3862 | free(path); | |
3863 | } | |
3864 | } | |
3865 | ||
3866 | finish: | |
3867 | if (_d) | |
3868 | closedir(_d); | |
3869 | ||
3870 | if (pids) | |
3871 | hashmap_free_free(pids); | |
3872 | } | |
3873 | ||
1dccbe19 LP |
3874 | static const char *const ioprio_class_table[] = { |
3875 | [IOPRIO_CLASS_NONE] = "none", | |
3876 | [IOPRIO_CLASS_RT] = "realtime", | |
3877 | [IOPRIO_CLASS_BE] = "best-effort", | |
3878 | [IOPRIO_CLASS_IDLE] = "idle" | |
3879 | }; | |
3880 | ||
3881 | DEFINE_STRING_TABLE_LOOKUP(ioprio_class, int); | |
3882 | ||
3883 | static const char *const sigchld_code_table[] = { | |
3884 | [CLD_EXITED] = "exited", | |
3885 | [CLD_KILLED] = "killed", | |
3886 | [CLD_DUMPED] = "dumped", | |
3887 | [CLD_TRAPPED] = "trapped", | |
3888 | [CLD_STOPPED] = "stopped", | |
3889 | [CLD_CONTINUED] = "continued", | |
3890 | }; | |
3891 | ||
3892 | DEFINE_STRING_TABLE_LOOKUP(sigchld_code, int); | |
3893 | ||
3894 | static const char *const log_facility_table[LOG_NFACILITIES] = { | |
3895 | [LOG_FAC(LOG_KERN)] = "kern", | |
3896 | [LOG_FAC(LOG_USER)] = "user", | |
3897 | [LOG_FAC(LOG_MAIL)] = "mail", | |
3898 | [LOG_FAC(LOG_DAEMON)] = "daemon", | |
3899 | [LOG_FAC(LOG_AUTH)] = "auth", | |
3900 | [LOG_FAC(LOG_SYSLOG)] = "syslog", | |
3901 | [LOG_FAC(LOG_LPR)] = "lpr", | |
3902 | [LOG_FAC(LOG_NEWS)] = "news", | |
3903 | [LOG_FAC(LOG_UUCP)] = "uucp", | |
3904 | [LOG_FAC(LOG_CRON)] = "cron", | |
3905 | [LOG_FAC(LOG_AUTHPRIV)] = "authpriv", | |
3906 | [LOG_FAC(LOG_FTP)] = "ftp", | |
3907 | [LOG_FAC(LOG_LOCAL0)] = "local0", | |
3908 | [LOG_FAC(LOG_LOCAL1)] = "local1", | |
3909 | [LOG_FAC(LOG_LOCAL2)] = "local2", | |
3910 | [LOG_FAC(LOG_LOCAL3)] = "local3", | |
3911 | [LOG_FAC(LOG_LOCAL4)] = "local4", | |
3912 | [LOG_FAC(LOG_LOCAL5)] = "local5", | |
3913 | [LOG_FAC(LOG_LOCAL6)] = "local6", | |
3914 | [LOG_FAC(LOG_LOCAL7)] = "local7" | |
3915 | }; | |
3916 | ||
3917 | DEFINE_STRING_TABLE_LOOKUP(log_facility, int); | |
3918 | ||
3919 | static const char *const log_level_table[] = { | |
3920 | [LOG_EMERG] = "emerg", | |
3921 | [LOG_ALERT] = "alert", | |
3922 | [LOG_CRIT] = "crit", | |
3923 | [LOG_ERR] = "err", | |
3924 | [LOG_WARNING] = "warning", | |
3925 | [LOG_NOTICE] = "notice", | |
3926 | [LOG_INFO] = "info", | |
3927 | [LOG_DEBUG] = "debug" | |
3928 | }; | |
3929 | ||
3930 | DEFINE_STRING_TABLE_LOOKUP(log_level, int); | |
3931 | ||
3932 | static const char* const sched_policy_table[] = { | |
3933 | [SCHED_OTHER] = "other", | |
3934 | [SCHED_BATCH] = "batch", | |
3935 | [SCHED_IDLE] = "idle", | |
3936 | [SCHED_FIFO] = "fifo", | |
3937 | [SCHED_RR] = "rr" | |
3938 | }; | |
3939 | ||
3940 | DEFINE_STRING_TABLE_LOOKUP(sched_policy, int); | |
3941 | ||
3942 | static const char* const rlimit_table[] = { | |
3943 | [RLIMIT_CPU] = "LimitCPU", | |
3944 | [RLIMIT_FSIZE] = "LimitFSIZE", | |
3945 | [RLIMIT_DATA] = "LimitDATA", | |
3946 | [RLIMIT_STACK] = "LimitSTACK", | |
3947 | [RLIMIT_CORE] = "LimitCORE", | |
3948 | [RLIMIT_RSS] = "LimitRSS", | |
3949 | [RLIMIT_NOFILE] = "LimitNOFILE", | |
3950 | [RLIMIT_AS] = "LimitAS", | |
3951 | [RLIMIT_NPROC] = "LimitNPROC", | |
3952 | [RLIMIT_MEMLOCK] = "LimitMEMLOCK", | |
3953 | [RLIMIT_LOCKS] = "LimitLOCKS", | |
3954 | [RLIMIT_SIGPENDING] = "LimitSIGPENDING", | |
3955 | [RLIMIT_MSGQUEUE] = "LimitMSGQUEUE", | |
3956 | [RLIMIT_NICE] = "LimitNICE", | |
3957 | [RLIMIT_RTPRIO] = "LimitRTPRIO", | |
3958 | [RLIMIT_RTTIME] = "LimitRTTIME" | |
3959 | }; | |
3960 | ||
3961 | DEFINE_STRING_TABLE_LOOKUP(rlimit, int); | |
4fd5948e LP |
3962 | |
3963 | static const char* const ip_tos_table[] = { | |
3964 | [IPTOS_LOWDELAY] = "low-delay", | |
3965 | [IPTOS_THROUGHPUT] = "throughput", | |
3966 | [IPTOS_RELIABILITY] = "reliability", | |
3967 | [IPTOS_LOWCOST] = "low-cost", | |
3968 | }; | |
3969 | ||
3970 | DEFINE_STRING_TABLE_LOOKUP(ip_tos, int); | |
2e22afe9 LP |
3971 | |
3972 | static const char *const signal_table[] = { | |
3973 | [SIGHUP] = "HUP", | |
3974 | [SIGINT] = "INT", | |
3975 | [SIGQUIT] = "QUIT", | |
3976 | [SIGILL] = "ILL", | |
3977 | [SIGTRAP] = "TRAP", | |
3978 | [SIGABRT] = "ABRT", | |
3979 | [SIGBUS] = "BUS", | |
3980 | [SIGFPE] = "FPE", | |
3981 | [SIGKILL] = "KILL", | |
3982 | [SIGUSR1] = "USR1", | |
3983 | [SIGSEGV] = "SEGV", | |
3984 | [SIGUSR2] = "USR2", | |
3985 | [SIGPIPE] = "PIPE", | |
3986 | [SIGALRM] = "ALRM", | |
3987 | [SIGTERM] = "TERM", | |
f26ee0b9 LP |
3988 | #ifdef SIGSTKFLT |
3989 | [SIGSTKFLT] = "STKFLT", /* Linux on SPARC doesn't know SIGSTKFLT */ | |
3990 | #endif | |
2e22afe9 LP |
3991 | [SIGCHLD] = "CHLD", |
3992 | [SIGCONT] = "CONT", | |
3993 | [SIGSTOP] = "STOP", | |
3994 | [SIGTSTP] = "TSTP", | |
3995 | [SIGTTIN] = "TTIN", | |
3996 | [SIGTTOU] = "TTOU", | |
3997 | [SIGURG] = "URG", | |
3998 | [SIGXCPU] = "XCPU", | |
3999 | [SIGXFSZ] = "XFSZ", | |
4000 | [SIGVTALRM] = "VTALRM", | |
4001 | [SIGPROF] = "PROF", | |
4002 | [SIGWINCH] = "WINCH", | |
4003 | [SIGIO] = "IO", | |
4004 | [SIGPWR] = "PWR", | |
4005 | [SIGSYS] = "SYS" | |
4006 | }; | |
4007 | ||
4008 | DEFINE_STRING_TABLE_LOOKUP(signal, int); |