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util: properly handle escaped quotes in words in split_quoted()
[thirdparty/systemd.git] / src / util.c
CommitLineData
60918275
LP		 1/*-*- Mode: C; c-basic-offset: 8 -*-*/
2
a7334b09
LP		 3/***
4 This file is part of systemd.
5
6 Copyright 2010 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20***/
21
60918275
LP		 22#include <assert.h>
23#include <string.h>
24#include <unistd.h>
25#include <errno.h>
85261803 26#include <stdlib.h>
034c6ed7
LP		 27#include <signal.h>
28#include <stdio.h>
1dccbe19
LP		 29#include <syslog.h>
30#include <sched.h>
31#include <sys/resource.h>
ef886c6a 32#include <linux/sched.h>
a9f5d454
LP		 33#include <sys/types.h>
34#include <sys/stat.h>
3a0ecb08 35#include <fcntl.h>
a0d40ac5 36#include <dirent.h>
601f6a1e
LP		 37#include <sys/ioctl.h>
38#include <linux/vt.h>
39#include <linux/tiocl.h>
80876c20
LP		 40#include <termios.h>
41#include <stdarg.h>
42#include <sys/inotify.h>
43#include <sys/poll.h>
8d567588 44#include <libgen.h>
3177a7fa 45#include <ctype.h>
5b6319dc 46#include <sys/prctl.h>
ef2f1067
LP		 47#include <sys/utsname.h>
48#include <pwd.h>
4fd5948e 49#include <netinet/ip.h>
60918275
LP		 50
51#include "macro.h"
52#include "util.h"
1dccbe19
LP		 53#include "ioprio.h"
54#include "missing.h"
a9f5d454 55#include "log.h"
65d2ebdc 56#include "strv.h"
60918275 57
e05797fb
LP		 58bool streq_ptr(const char *a, const char *b) {
59
60 /* Like streq(), but tries to make sense of NULL pointers */
61
62 if (a && b)
63 return streq(a, b);
64
65 if (!a && !b)
66 return true;
67
68 return false;
69}
70
47be870b 71usec_t now(clockid_t clock_id) {
60918275
LP		 72 struct timespec ts;
73
47be870b 74 assert_se(clock_gettime(clock_id, &ts) == 0);
60918275
LP		 75
76 return timespec_load(&ts);
77}
78
63983207 79dual_timestamp* dual_timestamp_get(dual_timestamp *ts) {
871d7de4
LP		 80 assert(ts);
81
82 ts->realtime = now(CLOCK_REALTIME);
83 ts->monotonic = now(CLOCK_MONOTONIC);
84
85 return ts;
86}
87
60918275
LP		 88usec_t timespec_load(const struct timespec *ts) {
89 assert(ts);
90
91 return
92 (usec_t) ts->tv_sec * USEC_PER_SEC +
93 (usec_t) ts->tv_nsec / NSEC_PER_USEC;
94}
95
96struct timespec *timespec_store(struct timespec *ts, usec_t u) {
97 assert(ts);
98
99 ts->tv_sec = (time_t) (u / USEC_PER_SEC);
100 ts->tv_nsec = (long int) ((u % USEC_PER_SEC) * NSEC_PER_USEC);
101
102 return ts;
103}
104
105usec_t timeval_load(const struct timeval *tv) {
106 assert(tv);
107
108 return
109 (usec_t) tv->tv_sec * USEC_PER_SEC +
110 (usec_t) tv->tv_usec;
111}
112
113struct timeval *timeval_store(struct timeval *tv, usec_t u) {
114 assert(tv);
115
116 tv->tv_sec = (time_t) (u / USEC_PER_SEC);
117 tv->tv_usec = (suseconds_t) (u % USEC_PER_SEC);
118
119 return tv;
120}
121
122bool endswith(const char *s, const char *postfix) {
123 size_t sl, pl;
124
125 assert(s);
126 assert(postfix);
127
128 sl = strlen(s);
129 pl = strlen(postfix);
130
d4d0d4db
LP		 131 if (pl == 0)
132 return true;
133
60918275
LP		 134 if (sl < pl)
135 return false;
136
137 return memcmp(s + sl - pl, postfix, pl) == 0;
138}
139
140bool startswith(const char *s, const char *prefix) {
141 size_t sl, pl;
142
143 assert(s);
144 assert(prefix);
145
146 sl = strlen(s);
147 pl = strlen(prefix);
148
d4d0d4db
LP		 149 if (pl == 0)
150 return true;
151
60918275
LP		 152 if (sl < pl)
153 return false;
154
155 return memcmp(s, prefix, pl) == 0;
156}
157
3177a7fa
MAP		 158bool startswith_no_case(const char *s, const char *prefix) {
159 size_t sl, pl;
160 unsigned i;
161
162 assert(s);
163 assert(prefix);
164
165 sl = strlen(s);
166 pl = strlen(prefix);
167
168 if (pl == 0)
169 return true;
170
171 if (sl < pl)
172 return false;
173
174 for(i = 0; i < pl; ++i) {
175 if (tolower(s[i]) != tolower(prefix[i]))
176 return false;
177 }
178
179 return true;
180}
181
79d6d816
LP		 182bool first_word(const char *s, const char *word) {
183 size_t sl, wl;
184
185 assert(s);
186 assert(word);
187
188 sl = strlen(s);
189 wl = strlen(word);
190
191 if (sl < wl)
192 return false;
193
d4d0d4db
LP		 194 if (wl == 0)
195 return true;
196
79d6d816
LP		 197 if (memcmp(s, word, wl) != 0)
198 return false;
199
d4d0d4db
LP		 200 return s[wl] == 0 ||
201 strchr(WHITESPACE, s[wl]);
79d6d816
LP		 202}
203
42f4e3c4 204int close_nointr(int fd) {
60918275
LP		 205 assert(fd >= 0);
206
207 for (;;) {
208 int r;
209
210 if ((r = close(fd)) >= 0)
211 return r;
212
213 if (errno != EINTR)
214 return r;
215 }
216}
85261803 217
85f136b5 218void close_nointr_nofail(int fd) {
80876c20 219 int saved_errno = errno;
85f136b5
LP		 220
221 /* like close_nointr() but cannot fail, and guarantees errno
222 * is unchanged */
223
224 assert_se(close_nointr(fd) == 0);
80876c20
LP		 225
226 errno = saved_errno;
85f136b5
LP		 227}
228
5b6319dc
LP		 229void close_many(const int fds[], unsigned n_fd) {
230 unsigned i;
231
232 for (i = 0; i < n_fd; i++)
233 close_nointr_nofail(fds[i]);
234}
235
85261803
LP		 236int parse_boolean(const char *v) {
237 assert(v);
238
44d8db9e 239 if (streq(v, "1") || v[0] == 'y' || v[0] == 'Y' || v[0] == 't' || v[0] == 'T' || !strcasecmp(v, "on"))
85261803 240 return 1;
44d8db9e 241 else if (streq(v, "0") || v[0] == 'n' || v[0] == 'N' || v[0] == 'f' || v[0] == 'F' || !strcasecmp(v, "off"))
85261803
LP		 242 return 0;
243
244 return -EINVAL;
245}
246
3ba686c1
LP		 247int parse_pid(const char *s, pid_t* ret_pid) {
248 unsigned long ul;
249 pid_t pid;
250 int r;
251
252 assert(s);
253 assert(ret_pid);
254
255 if ((r = safe_atolu(s, &ul)) < 0)
256 return r;
257
258 pid = (pid_t) ul;
259
260 if ((unsigned long) pid != ul)
261 return -ERANGE;
262
263 if (pid <= 0)
264 return -ERANGE;
265
266 *ret_pid = pid;
267 return 0;
268}
269
85261803
LP		 270int safe_atou(const char *s, unsigned *ret_u) {
271 char *x = NULL;
034c6ed7 272 unsigned long l;
85261803
LP		 273
274 assert(s);
275 assert(ret_u);
276
277 errno = 0;
278 l = strtoul(s, &x, 0);
279
280 if (!x || *x || errno)
281 return errno ? -errno : -EINVAL;
282
034c6ed7 283 if ((unsigned long) (unsigned) l != l)
85261803
LP		 284 return -ERANGE;
285
286 *ret_u = (unsigned) l;
287 return 0;
288}
289
290int safe_atoi(const char *s, int *ret_i) {
291 char *x = NULL;
034c6ed7 292 long l;
85261803
LP		 293
294 assert(s);
295 assert(ret_i);
296
297 errno = 0;
298 l = strtol(s, &x, 0);
299
300 if (!x || *x || errno)
301 return errno ? -errno : -EINVAL;
302
034c6ed7 303 if ((long) (int) l != l)
85261803
LP		 304 return -ERANGE;
305
034c6ed7
LP		 306 *ret_i = (int) l;
307 return 0;
308}
309
034c6ed7
LP		 310int safe_atollu(const char *s, long long unsigned *ret_llu) {
311 char *x = NULL;
312 unsigned long long l;
313
314 assert(s);
315 assert(ret_llu);
316
317 errno = 0;
318 l = strtoull(s, &x, 0);
319
320 if (!x || *x || errno)
321 return errno ? -errno : -EINVAL;
322
323 *ret_llu = l;
324 return 0;
325}
326
327int safe_atolli(const char *s, long long int *ret_lli) {
328 char *x = NULL;
329 long long l;
330
331 assert(s);
332 assert(ret_lli);
333
334 errno = 0;
335 l = strtoll(s, &x, 0);
336
337 if (!x || *x || errno)
338 return errno ? -errno : -EINVAL;
339
340 *ret_lli = l;
85261803
LP		 341 return 0;
342}
a41e8209 343
a41e8209 344/* Split a string into words. */
65d2ebdc 345char *split(const char *c, size_t *l, const char *separator, char **state) {
a41e8209
LP		 346 char *current;
347
348 current = *state ? *state : (char*) c;
349
350 if (!*current || *c == 0)
351 return NULL;
352
65d2ebdc
LP		 353 current += strspn(current, separator);
354 *l = strcspn(current, separator);
82919e3d
LP		 355 *state = current+*l;
356
357 return (char*) current;
358}
359
034c6ed7
LP		 360/* Split a string into words, but consider strings enclosed in '' and
361 * "" as words even if they include spaces. */
362char *split_quoted(const char *c, size_t *l, char **state) {
0bab36f2
LP		 363 char *current, *e;
364 bool escaped = false;
034c6ed7
LP		 365
366 current = *state ? *state : (char*) c;
367
368 if (!*current || *c == 0)
369 return NULL;
370
371 current += strspn(current, WHITESPACE);
372
373 if (*current == '\'') {
374 current ++;
034c6ed7 375
0bab36f2
LP		 376 for (e = current; *e; e++) {
377 if (escaped)
378 escaped = false;
379 else if (*e == '\\')
380 escaped = true;
381 else if (*e == '\'')
382 break;
383 }
384
385 *l = e-current;
386 *state = *e == 0 ? e : e+1;
034c6ed7
LP		 387 } else if (*current == '\"') {
388 current ++;
034c6ed7 389
0bab36f2
LP		 390 for (e = current; *e; e++) {
391 if (escaped)
392 escaped = false;
393 else if (*e == '\\')
394 escaped = true;
395 else if (*e == '\"')
396 break;
397 }
398
399 *l = e-current;
400 *state = *e == 0 ? e : e+1;
034c6ed7 401 } else {
0bab36f2
LP		 402 for (e = current; *e; e++) {
403 if (escaped)
404 escaped = false;
405 else if (*e == '\\')
406 escaped = true;
407 else if (strchr(WHITESPACE, *e))
408 break;
409 }
410 *l = e-current;
411 *state = e;
034c6ed7
LP		 412 }
413
414 return (char*) current;
415}
416
65d2ebdc
LP		 417char **split_path_and_make_absolute(const char *p) {
418 char **l;
419 assert(p);
420
421 if (!(l = strv_split(p, ":")))
422 return NULL;
423
424 if (!strv_path_make_absolute_cwd(l)) {
425 strv_free(l);
426 return NULL;
427 }
428
429 return l;
430}
431
034c6ed7
LP		 432int get_parent_of_pid(pid_t pid, pid_t *_ppid) {
433 int r;
434 FILE *f;
435 char fn[132], line[256], *p;
bb00e604 436 long unsigned ppid;
034c6ed7
LP		 437
438 assert(pid >= 0);
439 assert(_ppid);
440
bb00e604 441 assert_se(snprintf(fn, sizeof(fn)-1, "/proc/%lu/stat", (unsigned long) pid) < (int) (sizeof(fn)-1));
034c6ed7
LP		 442 fn[sizeof(fn)-1] = 0;
443
444 if (!(f = fopen(fn, "r")))
445 return -errno;
446
447 if (!(fgets(line, sizeof(line), f))) {
448 r = -errno;
449 fclose(f);
450 return r;
451 }
452
453 fclose(f);
454
455 /* Let's skip the pid and comm fields. The latter is enclosed
456 * in () but does not escape any () in its value, so let's
457 * skip over it manually */
458
459 if (!(p = strrchr(line, ')')))
460 return -EIO;
461
462 p++;
463
464 if (sscanf(p, " "
465 "%*c " /* state */
bb00e604 466 "%lu ", /* ppid */
034c6ed7
LP		 467 &ppid) != 1)
468 return -EIO;
469
bb00e604 470 if ((long unsigned) (pid_t) ppid != ppid)
034c6ed7
LP		 471 return -ERANGE;
472
473 *_ppid = (pid_t) ppid;
474
475 return 0;
476}
477
478int write_one_line_file(const char *fn, const char *line) {
479 FILE *f;
480 int r;
481
482 assert(fn);
483 assert(line);
484
485 if (!(f = fopen(fn, "we")))
486 return -errno;
487
488 if (fputs(line, f) < 0) {
489 r = -errno;
490 goto finish;
491 }
492
493 r = 0;
494finish:
495 fclose(f);
496 return r;
497}
498
499int read_one_line_file(const char *fn, char **line) {
500 FILE *f;
501 int r;
11316633 502 char t[2048], *c;
034c6ed7
LP		 503
504 assert(fn);
505 assert(line);
506
507 if (!(f = fopen(fn, "re")))
508 return -errno;
509
510 if (!(fgets(t, sizeof(t), f))) {
511 r = -errno;
512 goto finish;
513 }
514
515 if (!(c = strdup(t))) {
516 r = -ENOMEM;
517 goto finish;
518 }
519
520 *line = c;
521 r = 0;
522
523finish:
524 fclose(f);
525 return r;
526}
44d8db9e 527
7072ced8
LP		 528char *truncate_nl(char *s) {
529 assert(s);
530
531 s[strcspn(s, NEWLINE)] = 0;
532 return s;
533}
534
535int get_process_name(pid_t pid, char **name) {
536 char *p;
537 int r;
538
539 assert(pid >= 1);
540 assert(name);
541
bb00e604 542 if (asprintf(&p, "/proc/%lu/comm", (unsigned long) pid) < 0)
7072ced8
LP		 543 return -ENOMEM;
544
545 r = read_one_line_file(p, name);
546 free(p);
547
548 if (r < 0)
549 return r;
550
551 truncate_nl(*name);
552 return 0;
553}
554
c59760ee
LP		 555int get_process_cmdline(pid_t pid, size_t max_length, char **line) {
556 char *p, *r, *k;
557 int c;
558 bool space = false;
559 size_t left;
560 FILE *f;
561
562 assert(pid >= 1);
563 assert(max_length > 0);
564 assert(line);
565
566 if (asprintf(&p, "/proc/%lu/cmdline", (unsigned long) pid) < 0)
567 return -ENOMEM;
568
569 f = fopen(p, "r");
570 free(p);
571
572 if (!f)
573 return -errno;
574
575 if (!(r = new(char, max_length))) {
576 fclose(f);
577 return -ENOMEM;
578 }
579
580 k = r;
581 left = max_length;
582 while ((c = getc(f)) != EOF) {
583
584 if (isprint(c)) {
585 if (space) {
586 if (left <= 4)
587 break;
588
589 *(k++) = ' ';
057fbb58 590 left--;
c59760ee
LP		 591 space = false;
592 }
593
594 if (left <= 4)
595 break;
596
597 *(k++) = (char) c;
057fbb58 598 left--;
c59760ee
LP		 599 } else
600 space = true;
601 }
602
603 if (left <= 4) {
604 size_t n = MIN(left-1, 3U);
605 memcpy(k, "...", n);
606 k[n] = 0;
607 } else
608 *k = 0;
609
610 fclose(f);
611
612 *line = r;
613 return 0;
614}
615
44d8db9e
LP		 616char *strappend(const char *s, const char *suffix) {
617 size_t a, b;
618 char *r;
619
620 assert(s);
621 assert(suffix);
622
623 a = strlen(s);
624 b = strlen(suffix);
625
626 if (!(r = new(char, a+b+1)))
627 return NULL;
628
629 memcpy(r, s, a);
630 memcpy(r+a, suffix, b);
631 r[a+b] = 0;
632
633 return r;
634}
87f0e418
LP		 635
636int readlink_malloc(const char *p, char **r) {
637 size_t l = 100;
638
639 assert(p);
640 assert(r);
641
642 for (;;) {
643 char *c;
644 ssize_t n;
645
646 if (!(c = new(char, l)))
647 return -ENOMEM;
648
649 if ((n = readlink(p, c, l-1)) < 0) {
650 int ret = -errno;
651 free(c);
652 return ret;
653 }
654
655 if ((size_t) n < l-1) {
656 c[n] = 0;
657 *r = c;
658 return 0;
659 }
660
661 free(c);
662 l *= 2;
663 }
664}
665
2c7108c4
LP		 666int readlink_and_make_absolute(const char *p, char **r) {
667 char *target, *k;
668 int j;
669
670 assert(p);
671 assert(r);
672
673 if ((j = readlink_malloc(p, &target)) < 0)
674 return j;
675
676 k = file_in_same_dir(p, target);
677 free(target);
678
679 if (!k)
680 return -ENOMEM;
681
682 *r = k;
683 return 0;
684}
685
87f0e418
LP		 686char *file_name_from_path(const char *p) {
687 char *r;
688
689 assert(p);
690
691 if ((r = strrchr(p, '/')))
692 return r + 1;
693
694 return (char*) p;
695}
0301abf4
LP		 696
697bool path_is_absolute(const char *p) {
698 assert(p);
699
700 return p[0] == '/';
701}
702
703bool is_path(const char *p) {
704
705 return !!strchr(p, '/');
706}
707
708char *path_make_absolute(const char *p, const char *prefix) {
709 char *r;
710
711 assert(p);
712
65d2ebdc
LP		 713 /* Makes every item in the list an absolute path by prepending
714 * the prefix, if specified and necessary */
715
0301abf4
LP		 716 if (path_is_absolute(p) || !prefix)
717 return strdup(p);
718
719 if (asprintf(&r, "%s/%s", prefix, p) < 0)
720 return NULL;
721
722 return r;
723}
2a987ee8 724
65d2ebdc
LP		 725char *path_make_absolute_cwd(const char *p) {
726 char *cwd, *r;
727
728 assert(p);
729
730 /* Similar to path_make_absolute(), but prefixes with the
731 * current working directory. */
732
733 if (path_is_absolute(p))
734 return strdup(p);
735
736 if (!(cwd = get_current_dir_name()))
737 return NULL;
738
739 r = path_make_absolute(p, cwd);
740 free(cwd);
741
742 return r;
743}
744
745char **strv_path_make_absolute_cwd(char **l) {
746 char **s;
747
748 /* Goes through every item in the string list and makes it
749 * absolute. This works in place and won't rollback any
750 * changes on failure. */
751
752 STRV_FOREACH(s, l) {
753 char *t;
754
755 if (!(t = path_make_absolute_cwd(*s)))
756 return NULL;
757
758 free(*s);
759 *s = t;
760 }
761
762 return l;
763}
764
c3f6d675
LP		 765char **strv_path_canonicalize(char **l) {
766 char **s;
767 unsigned k = 0;
768 bool enomem = false;
769
770 if (strv_isempty(l))
771 return l;
772
773 /* Goes through every item in the string list and canonicalize
774 * the path. This works in place and won't rollback any
775 * changes on failure. */
776
777 STRV_FOREACH(s, l) {
778 char *t, *u;
779
780 t = path_make_absolute_cwd(*s);
781 free(*s);
782
783 if (!t) {
784 enomem = true;
785 continue;
786 }
787
788 errno = 0;
789 u = canonicalize_file_name(t);
790 free(t);
791
792 if (!u) {
793 if (errno == ENOMEM || !errno)
794 enomem = true;
795
796 continue;
797 }
798
799 l[k++] = u;
800 }
801
802 l[k] = NULL;
803
804 if (enomem)
805 return NULL;
806
807 return l;
808}
809
2a987ee8
LP		 810int reset_all_signal_handlers(void) {
811 int sig;
812
813 for (sig = 1; sig < _NSIG; sig++) {
814 struct sigaction sa;
815
816 if (sig == SIGKILL || sig == SIGSTOP)
817 continue;
818
819 zero(sa);
820 sa.sa_handler = SIG_DFL;
431c32bf 821 sa.sa_flags = SA_RESTART;
2a987ee8
LP		 822
823 /* On Linux the first two RT signals are reserved by
824 * glibc, and sigaction() will return EINVAL for them. */
825 if ((sigaction(sig, &sa, NULL) < 0))
826 if (errno != EINVAL)
827 return -errno;
828 }
829
8e274523 830 return 0;
2a987ee8 831}
4a72ff34
LP		 832
833char *strstrip(char *s) {
834 char *e, *l = NULL;
835
836 /* Drops trailing whitespace. Modifies the string in
837 * place. Returns pointer to first non-space character */
838
839 s += strspn(s, WHITESPACE);
840
841 for (e = s; *e; e++)
842 if (!strchr(WHITESPACE, *e))
843 l = e;
844
845 if (l)
846 *(l+1) = 0;
847 else
848 *s = 0;
849
850 return s;
4a72ff34
LP		 851}
852
ee9b5e01
LP		 853char *delete_chars(char *s, const char *bad) {
854 char *f, *t;
855
856 /* Drops all whitespace, regardless where in the string */
857
858 for (f = s, t = s; *f; f++) {
859 if (strchr(bad, *f))
860 continue;
861
862 *(t++) = *f;
863 }
864
865 *t = 0;
866
867 return s;
868}
869
4a72ff34
LP		 870char *file_in_same_dir(const char *path, const char *filename) {
871 char *e, *r;
872 size_t k;
873
874 assert(path);
875 assert(filename);
876
877 /* This removes the last component of path and appends
878 * filename, unless the latter is absolute anyway or the
879 * former isn't */
880
881 if (path_is_absolute(filename))
882 return strdup(filename);
883
884 if (!(e = strrchr(path, '/')))
885 return strdup(filename);
886
887 k = strlen(filename);
888 if (!(r = new(char, e-path+1+k+1)))
889 return NULL;
890
891 memcpy(r, path, e-path+1);
892 memcpy(r+(e-path)+1, filename, k+1);
893
894 return r;
895}
fb624d04 896
8c6db833
LP		 897int safe_mkdir(const char *path, mode_t mode, uid_t uid, gid_t gid) {
898 struct stat st;
899
900 if (mkdir(path, mode) >= 0)
901 if (chmod_and_chown(path, mode, uid, gid) < 0)
902 return -errno;
903
904 if (lstat(path, &st) < 0)
905 return -errno;
906
907 if ((st.st_mode & 0777) != mode ||
908 st.st_uid != uid ||
909 st.st_gid != gid ||
910 !S_ISDIR(st.st_mode)) {
911 errno = EEXIST;
912 return -errno;
913 }
914
915 return 0;
916}
917
918
a9f5d454
LP		 919int mkdir_parents(const char *path, mode_t mode) {
920 const char *p, *e;
921
922 assert(path);
923
924 /* Creates every parent directory in the path except the last
925 * component. */
926
927 p = path + strspn(path, "/");
928 for (;;) {
929 int r;
930 char *t;
931
932 e = p + strcspn(p, "/");
933 p = e + strspn(e, "/");
934
935 /* Is this the last component? If so, then we're
936 * done */
937 if (*p == 0)
938 return 0;
939
940 if (!(t = strndup(path, e - path)))
941 return -ENOMEM;
942
943 r = mkdir(t, mode);
944
945 free(t);
946
947 if (r < 0 && errno != EEXIST)
948 return -errno;
949 }
950}
951
bbd67135
LP		 952int mkdir_p(const char *path, mode_t mode) {
953 int r;
954
955 /* Like mkdir -p */
956
957 if ((r = mkdir_parents(path, mode)) < 0)
958 return r;
959
960 if (mkdir(path, mode) < 0)
961 return -errno;
962
963 return 0;
964}
965
c32dd69b
LP		 966int rmdir_parents(const char *path, const char *stop) {
967 size_t l;
968 int r = 0;
969
970 assert(path);
971 assert(stop);
972
973 l = strlen(path);
974
975 /* Skip trailing slashes */
976 while (l > 0 && path[l-1] == '/')
977 l--;
978
979 while (l > 0) {
980 char *t;
981
982 /* Skip last component */
983 while (l > 0 && path[l-1] != '/')
984 l--;
985
986 /* Skip trailing slashes */
987 while (l > 0 && path[l-1] == '/')
988 l--;
989
990 if (l <= 0)
991 break;
992
993 if (!(t = strndup(path, l)))
994 return -ENOMEM;
995
996 if (path_startswith(stop, t)) {
997 free(t);
998 return 0;
999 }
1000
1001 r = rmdir(t);
1002 free(t);
1003
1004 if (r < 0)
1005 if (errno != ENOENT)
1006 return -errno;
1007 }
1008
1009 return 0;
1010}
1011
1012
fb624d04
LP		 1013char hexchar(int x) {
1014 static const char table[16] = "0123456789abcdef";
1015
1016 return table[x & 15];
1017}
4fe88d28
LP		 1018
1019int unhexchar(char c) {
1020
1021 if (c >= '0' && c <= '9')
1022 return c - '0';
1023
1024 if (c >= 'a' && c <= 'f')
ea430986 1025 return c - 'a' + 10;
4fe88d28
LP		 1026
1027 if (c >= 'A' && c <= 'F')
ea430986 1028 return c - 'A' + 10;
4fe88d28
LP		 1029
1030 return -1;
1031}
1032
1033char octchar(int x) {
1034 return '0' + (x & 7);
1035}
1036
1037int unoctchar(char c) {
1038
1039 if (c >= '0' && c <= '7')
1040 return c - '0';
1041
1042 return -1;
1043}
1044
5af98f82
LP		 1045char decchar(int x) {
1046 return '0' + (x % 10);
1047}
1048
1049int undecchar(char c) {
1050
1051 if (c >= '0' && c <= '9')
1052 return c - '0';
1053
1054 return -1;
1055}
1056
4fe88d28
LP		 1057char *cescape(const char *s) {
1058 char *r, *t;
1059 const char *f;
1060
1061 assert(s);
1062
1063 /* Does C style string escaping. */
1064
1065 if (!(r = new(char, strlen(s)*4 + 1)))
1066 return NULL;
1067
1068 for (f = s, t = r; *f; f++)
1069
1070 switch (*f) {
1071
1072 case '\a':
1073 *(t++) = '\\';
1074 *(t++) = 'a';
1075 break;
1076 case '\b':
1077 *(t++) = '\\';
1078 *(t++) = 'b';
1079 break;
1080 case '\f':
1081 *(t++) = '\\';
1082 *(t++) = 'f';
1083 break;
1084 case '\n':
1085 *(t++) = '\\';
1086 *(t++) = 'n';
1087 break;
1088 case '\r':
1089 *(t++) = '\\';
1090 *(t++) = 'r';
1091 break;
1092 case '\t':
1093 *(t++) = '\\';
1094 *(t++) = 't';
1095 break;
1096 case '\v':
1097 *(t++) = '\\';
1098 *(t++) = 'v';
1099 break;
1100 case '\\':
1101 *(t++) = '\\';
1102 *(t++) = '\\';
1103 break;
1104 case '"':
1105 *(t++) = '\\';
1106 *(t++) = '"';
1107 break;
1108 case '\'':
1109 *(t++) = '\\';
1110 *(t++) = '\'';
1111 break;
1112
1113 default:
1114 /* For special chars we prefer octal over
1115 * hexadecimal encoding, simply because glib's
1116 * g_strescape() does the same */
1117 if ((*f < ' ') || (*f >= 127)) {
1118 *(t++) = '\\';
1119 *(t++) = octchar((unsigned char) *f >> 6);
1120 *(t++) = octchar((unsigned char) *f >> 3);
1121 *(t++) = octchar((unsigned char) *f);
1122 } else
1123 *(t++) = *f;
1124 break;
1125 }
1126
1127 *t = 0;
1128
1129 return r;
1130}
1131
1132char *cunescape(const char *s) {
1133 char *r, *t;
1134 const char *f;
1135
1136 assert(s);
1137
1138 /* Undoes C style string escaping */
1139
1140 if (!(r = new(char, strlen(s)+1)))
1141 return r;
1142
1143 for (f = s, t = r; *f; f++) {
1144
1145 if (*f != '\\') {
1146 *(t++) = *f;
1147 continue;
1148 }
1149
1150 f++;
1151
1152 switch (*f) {
1153
1154 case 'a':
1155 *(t++) = '\a';
1156 break;
1157 case 'b':
1158 *(t++) = '\b';
1159 break;
1160 case 'f':
1161 *(t++) = '\f';
1162 break;
1163 case 'n':
1164 *(t++) = '\n';
1165 break;
1166 case 'r':
1167 *(t++) = '\r';
1168 break;
1169 case 't':
1170 *(t++) = '\t';
1171 break;
1172 case 'v':
1173 *(t++) = '\v';
1174 break;
1175 case '\\':
1176 *(t++) = '\\';
1177 break;
1178 case '"':
1179 *(t++) = '"';
1180 break;
1181 case '\'':
1182 *(t++) = '\'';
1183 break;
1184
1185 case 'x': {
1186 /* hexadecimal encoding */
1187 int a, b;
1188
1189 if ((a = unhexchar(f[1])) < 0 ||
1190 (b = unhexchar(f[2])) < 0) {
1191 /* Invalid escape code, let's take it literal then */
1192 *(t++) = '\\';
1193 *(t++) = 'x';
1194 } else {
1195 *(t++) = (char) ((a << 4) | b);
1196 f += 2;
1197 }
1198
1199 break;
1200 }
1201
1202 case '0':
1203 case '1':
1204 case '2':
1205 case '3':
1206 case '4':
1207 case '5':
1208 case '6':
1209 case '7': {
1210 /* octal encoding */
1211 int a, b, c;
1212
1213 if ((a = unoctchar(f[0])) < 0 ||
1214 (b = unoctchar(f[1])) < 0 ||
1215 (c = unoctchar(f[2])) < 0) {
1216 /* Invalid escape code, let's take it literal then */
1217 *(t++) = '\\';
1218 *(t++) = f[0];
1219 } else {
1220 *(t++) = (char) ((a << 6) | (b << 3) | c);
1221 f += 2;
1222 }
1223
1224 break;
1225 }
1226
1227 case 0:
1228 /* premature end of string.*/
1229 *(t++) = '\\';
1230 goto finish;
1231
1232 default:
1233 /* Invalid escape code, let's take it literal then */
1234 *(t++) = '\\';
f3d4cc01 1235 *(t++) = *f;
4fe88d28
LP		 1236 break;
1237 }
1238 }
1239
1240finish:
1241 *t = 0;
1242 return r;
1243}
1244
1245
1246char *xescape(const char *s, const char *bad) {
1247 char *r, *t;
1248 const char *f;
1249
1250 /* Escapes all chars in bad, in addition to \ and all special
1251 * chars, in \xFF style escaping. May be reversed with
1252 * cunescape. */
1253
1254 if (!(r = new(char, strlen(s)*4+1)))
1255 return NULL;
1256
1257 for (f = s, t = r; *f; f++) {
1258
b866264a
LP		 1259 if ((*f < ' ') || (*f >= 127) ||
1260 (*f == '\\') || strchr(bad, *f)) {
4fe88d28
LP		 1261 *(t++) = '\\';
1262 *(t++) = 'x';
1263 *(t++) = hexchar(*f >> 4);
1264 *(t++) = hexchar(*f);
1265 } else
1266 *(t++) = *f;
1267 }
1268
1269 *t = 0;
1270
1271 return r;
1272}
1273
ea430986 1274char *bus_path_escape(const char *s) {
ea430986
LP		 1275 char *r, *t;
1276 const char *f;
1277
47be870b
LP		 1278 assert(s);
1279
ea430986
LP		 1280 /* Escapes all chars that D-Bus' object path cannot deal
1281 * with. Can be reverse with bus_path_unescape() */
1282
1283 if (!(r = new(char, strlen(s)*3+1)))
1284 return NULL;
1285
1286 for (f = s, t = r; *f; f++) {
1287
1288 if (!(*f >= 'A' && *f <= 'Z') &&
1289 !(*f >= 'a' && *f <= 'z') &&
1290 !(*f >= '0' && *f <= '9')) {
1291 *(t++) = '_';
1292 *(t++) = hexchar(*f >> 4);
1293 *(t++) = hexchar(*f);
1294 } else
1295 *(t++) = *f;
1296 }
1297
1298 *t = 0;
1299
1300 return r;
1301}
1302
9e2f7c11 1303char *bus_path_unescape(const char *f) {
ea430986 1304 char *r, *t;
ea430986 1305
9e2f7c11 1306 assert(f);
47be870b 1307
9e2f7c11 1308 if (!(r = strdup(f)))
ea430986
LP		 1309 return NULL;
1310
9e2f7c11 1311 for (t = r; *f; f++) {
ea430986
LP		 1312
1313 if (*f == '_') {
1314 int a, b;
1315
1316 if ((a = unhexchar(f[1])) < 0 ||
1317 (b = unhexchar(f[2])) < 0) {
1318 /* Invalid escape code, let's take it literal then */
1319 *(t++) = '_';
1320 } else {
1321 *(t++) = (char) ((a << 4) | b);
1322 f += 2;
1323 }
1324 } else
1325 *(t++) = *f;
1326 }
1327
1328 *t = 0;
1329
1330 return r;
1331}
1332
4fe88d28
LP		 1333char *path_kill_slashes(char *path) {
1334 char *f, *t;
1335 bool slash = false;
1336
1337 /* Removes redundant inner and trailing slashes. Modifies the
1338 * passed string in-place.
1339 *
1340 * ///foo///bar/ becomes /foo/bar
1341 */
1342
1343 for (f = path, t = path; *f; f++) {
1344
1345 if (*f == '/') {
1346 slash = true;
1347 continue;
1348 }
1349
1350 if (slash) {
1351 slash = false;
1352 *(t++) = '/';
1353 }
1354
1355 *(t++) = *f;
1356 }
1357
1358 /* Special rule, if we are talking of the root directory, a
1359 trailing slash is good */
1360
1361 if (t == path && slash)
1362 *(t++) = '/';
1363
1364 *t = 0;
1365 return path;
1366}
1367
1368bool path_startswith(const char *path, const char *prefix) {
1369 assert(path);
1370 assert(prefix);
1371
1372 if ((path[0] == '/') != (prefix[0] == '/'))
1373 return false;
1374
1375 for (;;) {
1376 size_t a, b;
1377
1378 path += strspn(path, "/");
1379 prefix += strspn(prefix, "/");
1380
1381 if (*prefix == 0)
1382 return true;
1383
1384 if (*path == 0)
1385 return false;
1386
1387 a = strcspn(path, "/");
1388 b = strcspn(prefix, "/");
1389
1390 if (a != b)
1391 return false;
1392
1393 if (memcmp(path, prefix, a) != 0)
1394 return false;
1395
1396 path += a;
1397 prefix += b;
1398 }
1399}
1400
15ae422b
LP		 1401bool path_equal(const char *a, const char *b) {
1402 assert(a);
1403 assert(b);
1404
1405 if ((a[0] == '/') != (b[0] == '/'))
1406 return false;
1407
1408 for (;;) {
1409 size_t j, k;
1410
1411 a += strspn(a, "/");
1412 b += strspn(b, "/");
1413
1414 if (*a == 0 && *b == 0)
1415 return true;
1416
1417 if (*a == 0 || *b == 0)
1418 return false;
1419
1420 j = strcspn(a, "/");
1421 k = strcspn(b, "/");
1422
1423 if (j != k)
1424 return false;
1425
1426 if (memcmp(a, b, j) != 0)
1427 return false;
1428
1429 a += j;
1430 b += k;
1431 }
1432}
1433
67d51650 1434char *ascii_strlower(char *t) {
4fe88d28
LP		 1435 char *p;
1436
67d51650 1437 assert(t);
4fe88d28 1438
67d51650 1439 for (p = t; *p; p++)
4fe88d28
LP		 1440 if (*p >= 'A' && *p <= 'Z')
1441 *p = *p - 'A' + 'a';
1442
67d51650 1443 return t;
4fe88d28 1444}
1dccbe19 1445
c85dc17b
LP		 1446bool ignore_file(const char *filename) {
1447 assert(filename);
1448
1449 return
1450 filename[0] == '.' ||
6c78be3c 1451 streq(filename, "lost+found") ||
c85dc17b
LP		 1452 endswith(filename, "~") ||
1453 endswith(filename, ".rpmnew") ||
1454 endswith(filename, ".rpmsave") ||
1455 endswith(filename, ".rpmorig") ||
1456 endswith(filename, ".dpkg-old") ||
1457 endswith(filename, ".dpkg-new") ||
1458 endswith(filename, ".swp");
1459}
1460
3a0ecb08
LP		 1461int fd_nonblock(int fd, bool nonblock) {
1462 int flags;
1463
1464 assert(fd >= 0);
1465
1466 if ((flags = fcntl(fd, F_GETFL, 0)) < 0)
1467 return -errno;
1468
1469 if (nonblock)
1470 flags |= O_NONBLOCK;
1471 else
1472 flags &= ~O_NONBLOCK;
1473
1474 if (fcntl(fd, F_SETFL, flags) < 0)
1475 return -errno;
1476
1477 return 0;
1478}
1479
1480int fd_cloexec(int fd, bool cloexec) {
1481 int flags;
1482
1483 assert(fd >= 0);
1484
1485 if ((flags = fcntl(fd, F_GETFD, 0)) < 0)
1486 return -errno;
1487
1488 if (cloexec)
1489 flags |= FD_CLOEXEC;
1490 else
1491 flags &= ~FD_CLOEXEC;
1492
1493 if (fcntl(fd, F_SETFD, flags) < 0)
1494 return -errno;
1495
1496 return 0;
1497}
1498
a0d40ac5
LP		 1499int close_all_fds(const int except[], unsigned n_except) {
1500 DIR *d;
1501 struct dirent *de;
1502 int r = 0;
1503
1504 if (!(d = opendir("/proc/self/fd")))
1505 return -errno;
1506
1507 while ((de = readdir(d))) {
a7610064 1508 int fd = -1;
a0d40ac5 1509
a16e1123 1510 if (ignore_file(de->d_name))
a0d40ac5
LP		 1511 continue;
1512
1513 if ((r = safe_atoi(de->d_name, &fd)) < 0)
1514 goto finish;
1515
1516 if (fd < 3)
1517 continue;
1518
1519 if (fd == dirfd(d))
1520 continue;
1521
1522 if (except) {
1523 bool found;
1524 unsigned i;
1525
1526 found = false;
1527 for (i = 0; i < n_except; i++)
1528 if (except[i] == fd) {
1529 found = true;
1530 break;
1531 }
1532
1533 if (found)
1534 continue;
1535 }
1536
2f357920
LP		 1537 if ((r = close_nointr(fd)) < 0) {
1538 /* Valgrind has its own FD and doesn't want to have it closed */
1539 if (errno != EBADF)
1540 goto finish;
1541 }
a0d40ac5
LP		 1542 }
1543
2f357920
LP		 1544 r = 0;
1545
a0d40ac5
LP		 1546finish:
1547 closedir(d);
1548 return r;
1549}
1550
db12775d
LP		 1551bool chars_intersect(const char *a, const char *b) {
1552 const char *p;
1553
1554 /* Returns true if any of the chars in a are in b. */
1555 for (p = a; *p; p++)
1556 if (strchr(b, *p))
1557 return true;
1558
1559 return false;
1560}
1561
8b6c7120
LP		 1562char *format_timestamp(char *buf, size_t l, usec_t t) {
1563 struct tm tm;
1564 time_t sec;
1565
1566 assert(buf);
1567 assert(l > 0);
1568
1569 if (t <= 0)
1570 return NULL;
1571
f872ec33 1572 sec = (time_t) (t / USEC_PER_SEC);
8b6c7120
LP		 1573
1574 if (strftime(buf, l, "%a, %d %b %Y %H:%M:%S %z", localtime_r(&sec, &tm)) <= 0)
1575 return NULL;
1576
1577 return buf;
1578}
1579
871d7de4
LP		 1580char *format_timespan(char *buf, size_t l, usec_t t) {
1581 static const struct {
1582 const char *suffix;
1583 usec_t usec;
1584 } table[] = {
1585 { "w", USEC_PER_WEEK },
1586 { "d", USEC_PER_DAY },
1587 { "h", USEC_PER_HOUR },
1588 { "min", USEC_PER_MINUTE },
1589 { "s", USEC_PER_SEC },
1590 { "ms", USEC_PER_MSEC },
1591 { "us", 1 },
1592 };
1593
1594 unsigned i;
1595 char *p = buf;
1596
1597 assert(buf);
1598 assert(l > 0);
1599
1600 if (t == (usec_t) -1)
1601 return NULL;
1602
1603 /* The result of this function can be parsed with parse_usec */
1604
1605 for (i = 0; i < ELEMENTSOF(table); i++) {
1606 int k;
1607 size_t n;
1608
1609 if (t < table[i].usec)
1610 continue;
1611
1612 if (l <= 1)
1613 break;
1614
1615 k = snprintf(p, l, "%s%llu%s", p > buf ? " " : "", (unsigned long long) (t / table[i].usec), table[i].suffix);
1616 n = MIN((size_t) k, l);
1617
1618 l -= n;
1619 p += n;
1620
1621 t %= table[i].usec;
1622 }
1623
1624 *p = 0;
1625
1626 return buf;
1627}
1628
42856c10
LP		 1629bool fstype_is_network(const char *fstype) {
1630 static const char * const table[] = {
1631 "cifs",
1632 "smbfs",
1633 "ncpfs",
1634 "nfs",
ca139f94
LP		 1635 "nfs4",
1636 "gfs",
1637 "gfs2"
42856c10
LP		 1638 };
1639
1640 unsigned i;
1641
1642 for (i = 0; i < ELEMENTSOF(table); i++)
1643 if (streq(table[i], fstype))
1644 return true;
1645
1646 return false;
1647}
1648
601f6a1e
LP		 1649int chvt(int vt) {
1650 int fd, r = 0;
1651
1652 if ((fd = open("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC)) < 0)
1653 return -errno;
1654
1655 if (vt < 0) {
1656 int tiocl[2] = {
1657 TIOCL_GETKMSGREDIRECT,
1658 0
1659 };
1660
1661 if (ioctl(fd, TIOCLINUX, tiocl) < 0)
1662 return -errno;
1663
1664 vt = tiocl[0] <= 0 ? 1 : tiocl[0];
1665 }
1666
1667 if (ioctl(fd, VT_ACTIVATE, vt) < 0)
1668 r = -errno;
1669
a16e1123 1670 close_nointr_nofail(r);
601f6a1e
LP		 1671 return r;
1672}
1673
80876c20
LP		 1674int read_one_char(FILE *f, char *ret, bool *need_nl) {
1675 struct termios old_termios, new_termios;
1676 char c;
1677 char line[1024];
1678
1679 assert(f);
1680 assert(ret);
1681
1682 if (tcgetattr(fileno(f), &old_termios) >= 0) {
1683 new_termios = old_termios;
1684
1685 new_termios.c_lflag &= ~ICANON;
1686 new_termios.c_cc[VMIN] = 1;
1687 new_termios.c_cc[VTIME] = 0;
1688
1689 if (tcsetattr(fileno(f), TCSADRAIN, &new_termios) >= 0) {
1690 size_t k;
1691
1692 k = fread(&c, 1, 1, f);
1693
1694 tcsetattr(fileno(f), TCSADRAIN, &old_termios);
1695
1696 if (k <= 0)
1697 return -EIO;
1698
1699 if (need_nl)
1700 *need_nl = c != '\n';
1701
1702 *ret = c;
1703 return 0;
1704 }
1705 }
1706
1707 if (!(fgets(line, sizeof(line), f)))
1708 return -EIO;
1709
1710 truncate_nl(line);
1711
1712 if (strlen(line) != 1)
1713 return -EBADMSG;
1714
1715 if (need_nl)
1716 *need_nl = false;
1717
1718 *ret = line[0];
1719 return 0;
1720}
1721
1722int ask(char *ret, const char *replies, const char *text, ...) {
1723 assert(ret);
1724 assert(replies);
1725 assert(text);
1726
1727 for (;;) {
1728 va_list ap;
1729 char c;
1730 int r;
1731 bool need_nl = true;
1732
b1b2dc0c
LP		 1733 fputs("\x1B[1m", stdout);
1734
80876c20
LP		 1735 va_start(ap, text);
1736 vprintf(text, ap);
1737 va_end(ap);
1738
b1b2dc0c
LP		 1739 fputs("\x1B[0m", stdout);
1740
80876c20
LP		 1741 fflush(stdout);
1742
1743 if ((r = read_one_char(stdin, &c, &need_nl)) < 0) {
1744
1745 if (r == -EBADMSG) {
1746 puts("Bad input, please try again.");
1747 continue;
1748 }
1749
1750 putchar('\n');
1751 return r;
1752 }
1753
1754 if (need_nl)
1755 putchar('\n');
1756
1757 if (strchr(replies, c)) {
1758 *ret = c;
1759 return 0;
1760 }
1761
1762 puts("Read unexpected character, please try again.");
1763 }
1764}
1765
1766int reset_terminal(int fd) {
1767 struct termios termios;
1768 int r = 0;
1769
1770 assert(fd >= 0);
1771
aaf694ca 1772 /* Set terminal to some sane defaults */
80876c20
LP		 1773
1774 if (tcgetattr(fd, &termios) < 0) {
1775 r = -errno;
1776 goto finish;
1777 }
1778
aaf694ca
LP		 1779 /* We only reset the stuff that matters to the software. How
1780 * hardware is set up we don't touch assuming that somebody
1781 * else will do that for us */
1782
1783 termios.c_iflag &= ~(IGNBRK | BRKINT | ISTRIP | INLCR | IGNCR | IUCLC);
80876c20
LP		 1784 termios.c_iflag |= ICRNL | IMAXBEL | IUTF8;
1785 termios.c_oflag |= ONLCR;
1786 termios.c_cflag |= CREAD;
1787 termios.c_lflag = ISIG | ICANON | IEXTEN | ECHO | ECHOE | ECHOK | ECHOCTL | ECHOPRT | ECHOKE;
1788
1789 termios.c_cc[VINTR] = 03; /* ^C */
1790 termios.c_cc[VQUIT] = 034; /* ^\ */
1791 termios.c_cc[VERASE] = 0177;
1792 termios.c_cc[VKILL] = 025; /* ^X */
1793 termios.c_cc[VEOF] = 04; /* ^D */
1794 termios.c_cc[VSTART] = 021; /* ^Q */
1795 termios.c_cc[VSTOP] = 023; /* ^S */
1796 termios.c_cc[VSUSP] = 032; /* ^Z */
1797 termios.c_cc[VLNEXT] = 026; /* ^V */
1798 termios.c_cc[VWERASE] = 027; /* ^W */
1799 termios.c_cc[VREPRINT] = 022; /* ^R */
aaf694ca
LP		 1800 termios.c_cc[VEOL] = 0;
1801 termios.c_cc[VEOL2] = 0;
80876c20
LP		 1802
1803 termios.c_cc[VTIME] = 0;
1804 termios.c_cc[VMIN] = 1;
1805
1806 if (tcsetattr(fd, TCSANOW, &termios) < 0)
1807 r = -errno;
1808
1809finish:
1810 /* Just in case, flush all crap out */
1811 tcflush(fd, TCIOFLUSH);
1812
1813 return r;
1814}
1815
1816int open_terminal(const char *name, int mode) {
1817 int fd, r;
1818
1819 if ((fd = open(name, mode)) < 0)
1820 return -errno;
1821
1822 if ((r = isatty(fd)) < 0) {
1823 close_nointr_nofail(fd);
1824 return -errno;
1825 }
1826
1827 if (!r) {
1828 close_nointr_nofail(fd);
1829 return -ENOTTY;
1830 }
1831
1832 return fd;
1833}
1834
1835int flush_fd(int fd) {
1836 struct pollfd pollfd;
1837
1838 zero(pollfd);
1839 pollfd.fd = fd;
1840 pollfd.events = POLLIN;
1841
1842 for (;;) {
1843 char buf[1024];
1844 ssize_t l;
1845 int r;
1846
1847 if ((r = poll(&pollfd, 1, 0)) < 0) {
1848
1849 if (errno == EINTR)
1850 continue;
1851
1852 return -errno;
1853 }
1854
1855 if (r == 0)
1856 return 0;
1857
1858 if ((l = read(fd, buf, sizeof(buf))) < 0) {
1859
1860 if (errno == EINTR)
1861 continue;
1862
1863 if (errno == EAGAIN)
1864 return 0;
1865
1866 return -errno;
1867 }
1868
1869 if (l <= 0)
1870 return 0;
1871 }
1872}
1873
21de3988 1874int acquire_terminal(const char *name, bool fail, bool force, bool ignore_tiocstty_eperm) {
bab45044 1875 int fd = -1, notify = -1, r, wd = -1;
80876c20
LP		 1876
1877 assert(name);
1878
1879 /* We use inotify to be notified when the tty is closed. We
1880 * create the watch before checking if we can actually acquire
1881 * it, so that we don't lose any event.
1882 *
1883 * Note: strictly speaking this actually watches for the
1884 * device being closed, it does *not* really watch whether a
1885 * tty loses its controlling process. However, unless some
1886 * rogue process uses TIOCNOTTY on /dev/tty *after* closing
1887 * its tty otherwise this will not become a problem. As long
1888 * as the administrator makes sure not configure any service
1889 * on the same tty as an untrusted user this should not be a
1890 * problem. (Which he probably should not do anyway.) */
1891
1892 if (!fail && !force) {
1893 if ((notify = inotify_init1(IN_CLOEXEC)) < 0) {
1894 r = -errno;
1895 goto fail;
1896 }
1897
1898 if ((wd = inotify_add_watch(notify, name, IN_CLOSE)) < 0) {
1899 r = -errno;
1900 goto fail;
1901 }
1902 }
1903
1904 for (;;) {
e3d1855b
LP		 1905 if (notify >= 0)
1906 if ((r = flush_fd(notify)) < 0)
1907 goto fail;
80876c20
LP		 1908
1909 /* We pass here O_NOCTTY only so that we can check the return
1910 * value TIOCSCTTY and have a reliable way to figure out if we
1911 * successfully became the controlling process of the tty */
1912 if ((fd = open_terminal(name, O_RDWR|O_NOCTTY)) < 0)
1913 return -errno;
1914
1915 /* First, try to get the tty */
21de3988
LP		 1916 r = ioctl(fd, TIOCSCTTY, force);
1917
1918 /* Sometimes it makes sense to ignore TIOCSCTTY
1919 * returning EPERM, i.e. when very likely we already
1920 * are have this controlling terminal. */
1921 if (r < 0 && errno == EPERM && ignore_tiocstty_eperm)
1922 r = 0;
1923
1924 if (r < 0 && (force || fail || errno != EPERM)) {
80876c20
LP		 1925 r = -errno;
1926 goto fail;
1927 }
1928
1929 if (r >= 0)
1930 break;
1931
1932 assert(!fail);
1933 assert(!force);
1934 assert(notify >= 0);
1935
1936 for (;;) {
1937 struct inotify_event e;
1938 ssize_t l;
1939
1940 if ((l = read(notify, &e, sizeof(e))) != sizeof(e)) {
1941
1942 if (l < 0) {
1943
1944 if (errno == EINTR)
1945 continue;
1946
1947 r = -errno;
1948 } else
1949 r = -EIO;
1950
1951 goto fail;
1952 }
1953
1954 if (e.wd != wd || !(e.mask & IN_CLOSE)) {
1955 r = -errno;
1956 goto fail;
1957 }
1958
1959 break;
1960 }
1961
1962 /* We close the tty fd here since if the old session
1963 * ended our handle will be dead. It's important that
1964 * we do this after sleeping, so that we don't enter
1965 * an endless loop. */
1966 close_nointr_nofail(fd);
1967 }
1968
1969 if (notify >= 0)
a16e1123 1970 close_nointr_nofail(notify);
80876c20
LP		 1971
1972 if ((r = reset_terminal(fd)) < 0)
1973 log_warning("Failed to reset terminal: %s", strerror(-r));
1974
1975 return fd;
1976
1977fail:
1978 if (fd >= 0)
a16e1123 1979 close_nointr_nofail(fd);
80876c20
LP		 1980
1981 if (notify >= 0)
a16e1123 1982 close_nointr_nofail(notify);
80876c20
LP		 1983
1984 return r;
1985}
1986
1987int release_terminal(void) {
1988 int r = 0, fd;
57cd2192 1989 struct sigaction sa_old, sa_new;
80876c20 1990
57cd2192 1991 if ((fd = open("/dev/tty", O_RDWR|O_NOCTTY|O_NDELAY)) < 0)
80876c20
LP		 1992 return -errno;
1993
57cd2192
LP		 1994 /* Temporarily ignore SIGHUP, so that we don't get SIGHUP'ed
1995 * by our own TIOCNOTTY */
1996
1997 zero(sa_new);
1998 sa_new.sa_handler = SIG_IGN;
1999 sa_new.sa_flags = SA_RESTART;
2000 assert_se(sigaction(SIGHUP, &sa_new, &sa_old) == 0);
2001
80876c20
LP		 2002 if (ioctl(fd, TIOCNOTTY) < 0)
2003 r = -errno;
2004
57cd2192
LP		 2005 assert_se(sigaction(SIGHUP, &sa_old, NULL) == 0);
2006
80876c20
LP		 2007 close_nointr_nofail(fd);
2008 return r;
2009}
2010
9a34ec5f
LP		 2011int sigaction_many(const struct sigaction *sa, ...) {
2012 va_list ap;
2013 int r = 0, sig;
2014
2015 va_start(ap, sa);
2016 while ((sig = va_arg(ap, int)) > 0)
2017 if (sigaction(sig, sa, NULL) < 0)
2018 r = -errno;
2019 va_end(ap);
2020
2021 return r;
2022}
2023
2024int ignore_signals(int sig, ...) {
a337c6fc 2025 struct sigaction sa;
9a34ec5f
LP		 2026 va_list ap;
2027 int r = 0;
a337c6fc
LP		 2028
2029 zero(sa);
2030 sa.sa_handler = SIG_IGN;
2031 sa.sa_flags = SA_RESTART;
2032
9a34ec5f
LP		 2033 if (sigaction(sig, &sa, NULL) < 0)
2034 r = -errno;
2035
2036 va_start(ap, sig);
2037 while ((sig = va_arg(ap, int)) > 0)
2038 if (sigaction(sig, &sa, NULL) < 0)
2039 r = -errno;
2040 va_end(ap);
2041
2042 return r;
2043}
2044
2045int default_signals(int sig, ...) {
2046 struct sigaction sa;
2047 va_list ap;
2048 int r = 0;
2049
2050 zero(sa);
2051 sa.sa_handler = SIG_DFL;
2052 sa.sa_flags = SA_RESTART;
2053
2054 if (sigaction(sig, &sa, NULL) < 0)
2055 r = -errno;
2056
2057 va_start(ap, sig);
2058 while ((sig = va_arg(ap, int)) > 0)
2059 if (sigaction(sig, &sa, NULL) < 0)
2060 r = -errno;
2061 va_end(ap);
2062
2063 return r;
a337c6fc
LP		 2064}
2065
8d567588
LP		 2066int close_pipe(int p[]) {
2067 int a = 0, b = 0;
2068
2069 assert(p);
2070
2071 if (p[0] >= 0) {
2072 a = close_nointr(p[0]);
2073 p[0] = -1;
2074 }
2075
2076 if (p[1] >= 0) {
2077 b = close_nointr(p[1]);
2078 p[1] = -1;
2079 }
2080
2081 return a < 0 ? a : b;
2082}
2083
eb22ac37 2084ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll) {
8d567588
LP		 2085 uint8_t *p;
2086 ssize_t n = 0;
2087
2088 assert(fd >= 0);
2089 assert(buf);
2090
2091 p = buf;
2092
2093 while (nbytes > 0) {
2094 ssize_t k;
2095
2096 if ((k = read(fd, p, nbytes)) <= 0) {
2097
eb22ac37 2098 if (k < 0 && errno == EINTR)
8d567588
LP		 2099 continue;
2100
eb22ac37 2101 if (k < 0 && errno == EAGAIN && do_poll) {
8d567588
LP		 2102 struct pollfd pollfd;
2103
2104 zero(pollfd);
2105 pollfd.fd = fd;
2106 pollfd.events = POLLIN;
2107
2108 if (poll(&pollfd, 1, -1) < 0) {
2109 if (errno == EINTR)
2110 continue;
2111
2112 return n > 0 ? n : -errno;
2113 }
2114
2115 if (pollfd.revents != POLLIN)
2116 return n > 0 ? n : -EIO;
2117
2118 continue;
2119 }
2120
2121 return n > 0 ? n : (k < 0 ? -errno : 0);
2122 }
2123
2124 p += k;
2125 nbytes -= k;
2126 n += k;
2127 }
2128
2129 return n;
2130}
2131
eb22ac37
LP		 2132ssize_t loop_write(int fd, const void *buf, size_t nbytes, bool do_poll) {
2133 const uint8_t *p;
2134 ssize_t n = 0;
2135
2136 assert(fd >= 0);
2137 assert(buf);
2138
2139 p = buf;
2140
2141 while (nbytes > 0) {
2142 ssize_t k;
2143
2144 if ((k = write(fd, p, nbytes)) <= 0) {
2145
2146 if (k < 0 && errno == EINTR)
2147 continue;
2148
2149 if (k < 0 && errno == EAGAIN && do_poll) {
2150 struct pollfd pollfd;
2151
2152 zero(pollfd);
2153 pollfd.fd = fd;
2154 pollfd.events = POLLOUT;
2155
2156 if (poll(&pollfd, 1, -1) < 0) {
2157 if (errno == EINTR)
2158 continue;
2159
2160 return n > 0 ? n : -errno;
2161 }
2162
2163 if (pollfd.revents != POLLOUT)
2164 return n > 0 ? n : -EIO;
2165
2166 continue;
2167 }
2168
2169 return n > 0 ? n : (k < 0 ? -errno : 0);
2170 }
2171
2172 p += k;
2173 nbytes -= k;
2174 n += k;
2175 }
2176
2177 return n;
2178}
2179
8d567588
LP		 2180int path_is_mount_point(const char *t) {
2181 struct stat a, b;
2182 char *copy;
2183
2184 if (lstat(t, &a) < 0) {
2185
2186 if (errno == ENOENT)
2187 return 0;
2188
2189 return -errno;
2190 }
2191
2192 if (!(copy = strdup(t)))
2193 return -ENOMEM;
2194
2195 if (lstat(dirname(copy), &b) < 0) {
2196 free(copy);
2197 return -errno;
2198 }
2199
2200 free(copy);
2201
2202 return a.st_dev != b.st_dev;
2203}
2204
24a6e4a4
LP		 2205int parse_usec(const char *t, usec_t *usec) {
2206 static const struct {
2207 const char *suffix;
2208 usec_t usec;
2209 } table[] = {
2210 { "sec", USEC_PER_SEC },
2211 { "s", USEC_PER_SEC },
2212 { "min", USEC_PER_MINUTE },
2213 { "hr", USEC_PER_HOUR },
2214 { "h", USEC_PER_HOUR },
2215 { "d", USEC_PER_DAY },
2216 { "w", USEC_PER_WEEK },
2217 { "msec", USEC_PER_MSEC },
2218 { "ms", USEC_PER_MSEC },
2219 { "m", USEC_PER_MINUTE },
2220 { "usec", 1ULL },
2221 { "us", 1ULL },
2222 { "", USEC_PER_SEC },
2223 };
2224
2225 const char *p;
2226 usec_t r = 0;
2227
2228 assert(t);
2229 assert(usec);
2230
2231 p = t;
2232 do {
2233 long long l;
2234 char *e;
2235 unsigned i;
2236
2237 errno = 0;
2238 l = strtoll(p, &e, 10);
2239
2240 if (errno != 0)
2241 return -errno;
2242
2243 if (l < 0)
2244 return -ERANGE;
2245
2246 if (e == p)
2247 return -EINVAL;
2248
2249 e += strspn(e, WHITESPACE);
2250
2251 for (i = 0; i < ELEMENTSOF(table); i++)
2252 if (startswith(e, table[i].suffix)) {
2253 r += (usec_t) l * table[i].usec;
2254 p = e + strlen(table[i].suffix);
2255 break;
2256 }
2257
2258 if (i >= ELEMENTSOF(table))
2259 return -EINVAL;
2260
2261 } while (*p != 0);
2262
2263 *usec = r;
2264
2265 return 0;
2266}
2267
843d2643
LP		 2268int make_stdio(int fd) {
2269 int r, s, t;
2270
2271 assert(fd >= 0);
2272
2273 r = dup2(fd, STDIN_FILENO);
2274 s = dup2(fd, STDOUT_FILENO);
2275 t = dup2(fd, STDERR_FILENO);
2276
2277 if (fd >= 3)
2278 close_nointr_nofail(fd);
2279
2280 if (r < 0 || s < 0 || t < 0)
2281 return -errno;
2282
2283 return 0;
2284}
2285
cb8a8f78
LP		 2286bool is_clean_exit(int code, int status) {
2287
2288 if (code == CLD_EXITED)
2289 return status == 0;
2290
2291 /* If a daemon does not implement handlers for some of the
2292 * signals that's not considered an unclean shutdown */
2293 if (code == CLD_KILLED)
2294 return
2295 status == SIGHUP ||
2296 status == SIGINT ||
2297 status == SIGTERM ||
2298 status == SIGPIPE;
2299
2300 return false;
2301}
2302
8407a5d0
LP		 2303bool is_device_path(const char *path) {
2304
2305 /* Returns true on paths that refer to a device, either in
2306 * sysfs or in /dev */
2307
2308 return
2309 path_startswith(path, "/dev/") ||
2310 path_startswith(path, "/sys/");
2311}
2312
01f78473
LP		 2313int dir_is_empty(const char *path) {
2314 DIR *d;
2315 int r;
2316 struct dirent buf, *de;
2317
2318 if (!(d = opendir(path)))
2319 return -errno;
2320
2321 for (;;) {
2322 if ((r = readdir_r(d, &buf, &de)) > 0) {
2323 r = -r;
2324 break;
2325 }
2326
2327 if (!de) {
2328 r = 1;
2329 break;
2330 }
2331
2332 if (!ignore_file(de->d_name)) {
2333 r = 0;
2334 break;
2335 }
2336 }
2337
2338 closedir(d);
2339 return r;
2340}
2341
d3782d60
LP		 2342unsigned long long random_ull(void) {
2343 int fd;
2344 uint64_t ull;
2345 ssize_t r;
2346
2347 if ((fd = open("/dev/urandom", O_RDONLY|O_CLOEXEC|O_NOCTTY)) < 0)
2348 goto fallback;
2349
eb22ac37 2350 r = loop_read(fd, &ull, sizeof(ull), true);
d3782d60
LP		 2351 close_nointr_nofail(fd);
2352
2353 if (r != sizeof(ull))
2354 goto fallback;
2355
2356 return ull;
2357
2358fallback:
2359 return random() * RAND_MAX + random();
2360}
2361
5b6319dc
LP		 2362void rename_process(const char name[8]) {
2363 assert(name);
2364
2365 prctl(PR_SET_NAME, name);
2366
2367 /* This is a like a poor man's setproctitle(). The string
2368 * passed should fit in 7 chars (i.e. the length of
2369 * "systemd") */
2370
2371 if (program_invocation_name)
2372 strncpy(program_invocation_name, name, strlen(program_invocation_name));
2373}
2374
7d793605
LP		 2375void sigset_add_many(sigset_t *ss, ...) {
2376 va_list ap;
2377 int sig;
2378
2379 assert(ss);
2380
2381 va_start(ap, ss);
2382 while ((sig = va_arg(ap, int)) > 0)
2383 assert_se(sigaddset(ss, sig) == 0);
2384 va_end(ap);
2385}
2386
ef2f1067
LP		 2387char* gethostname_malloc(void) {
2388 struct utsname u;
2389
2390 assert_se(uname(&u) >= 0);
2391
2392 if (u.nodename[0])
2393 return strdup(u.nodename);
2394
2395 return strdup(u.sysname);
2396}
2397
8c6db833
LP		 2398int getmachineid_malloc(char **b) {
2399 int r;
2400
2401 assert(b);
2402
2403 if ((r = read_one_line_file("/var/lib/dbus/machine-id", b)) < 0)
2404 return r;
2405
2406 strstrip(*b);
2407 return 0;
2408}
2409
ef2f1067
LP		 2410char* getlogname_malloc(void) {
2411 uid_t uid;
2412 long bufsize;
2413 char *buf, *name;
2414 struct passwd pwbuf, *pw = NULL;
2415 struct stat st;
2416
2417 if (isatty(STDIN_FILENO) && fstat(STDIN_FILENO, &st) >= 0)
2418 uid = st.st_uid;
2419 else
2420 uid = getuid();
2421
2422 /* Shortcut things to avoid NSS lookups */
2423 if (uid == 0)
2424 return strdup("root");
2425
2426 if ((bufsize = sysconf(_SC_GETPW_R_SIZE_MAX)) <= 0)
2427 bufsize = 4096;
2428
2429 if (!(buf = malloc(bufsize)))
2430 return NULL;
2431
2432 if (getpwuid_r(uid, &pwbuf, buf, bufsize, &pw) == 0 && pw) {
2433 name = strdup(pw->pw_name);
2434 free(buf);
2435 return name;
2436 }
2437
2438 free(buf);
2439
2440 if (asprintf(&name, "%lu", (unsigned long) uid) < 0)
2441 return NULL;
2442
2443 return name;
2444}
2445
8c6db833
LP		 2446int getttyname_malloc(char **r) {
2447 char path[PATH_MAX], *p, *c;
2448
2449 assert(r);
ef2f1067
LP		 2450
2451 if (ttyname_r(STDIN_FILENO, path, sizeof(path)) < 0)
8c6db833 2452 return -errno;
ef2f1067
LP		 2453
2454 char_array_0(path);
2455
2456 p = path;
2457 if (startswith(path, "/dev/"))
2458 p += 5;
2459
8c6db833
LP		 2460 if (!(c = strdup(p)))
2461 return -ENOMEM;
2462
2463 *r = c;
2464 return 0;
2465}
2466
2467static int rm_rf_children(int fd, bool only_dirs) {
2468 DIR *d;
2469 int ret = 0;
2470
2471 assert(fd >= 0);
2472
2473 /* This returns the first error we run into, but nevertheless
2474 * tries to go on */
2475
2476 if (!(d = fdopendir(fd))) {
2477 close_nointr_nofail(fd);
2478 return -errno;
2479 }
2480
2481 for (;;) {
2482 struct dirent buf, *de;
2483 bool is_dir;
2484 int r;
2485
2486 if ((r = readdir_r(d, &buf, &de)) != 0) {
2487 if (ret == 0)
2488 ret = -r;
2489 break;
2490 }
2491
2492 if (!de)
2493 break;
2494
2495 if (streq(de->d_name, ".") || streq(de->d_name, ".."))
2496 continue;
2497
2498 if (de->d_type == DT_UNKNOWN) {
2499 struct stat st;
2500
2501 if (fstatat(fd, de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) {
2502 if (ret == 0)
2503 ret = -errno;
2504 continue;
2505 }
2506
2507 is_dir = S_ISDIR(st.st_mode);
2508 } else
2509 is_dir = de->d_type == DT_DIR;
2510
2511 if (is_dir) {
2512 int subdir_fd;
2513
2514 if ((subdir_fd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC)) < 0) {
2515 if (ret == 0)
2516 ret = -errno;
2517 continue;
2518 }
2519
2520 if ((r = rm_rf_children(subdir_fd, only_dirs)) < 0) {
2521 if (ret == 0)
2522 ret = r;
2523 }
2524
2525 if (unlinkat(fd, de->d_name, AT_REMOVEDIR) < 0) {
2526 if (ret == 0)
2527 ret = -errno;
2528 }
2529 } else if (!only_dirs) {
2530
2531 if (unlinkat(fd, de->d_name, 0) < 0) {
2532 if (ret == 0)
2533 ret = -errno;
2534 }
2535 }
2536 }
2537
2538 closedir(d);
2539
2540 return ret;
2541}
2542
2543int rm_rf(const char *path, bool only_dirs, bool delete_root) {
2544 int fd;
2545 int r;
2546
2547 assert(path);
2548
2549 if ((fd = open(path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC)) < 0) {
2550
2551 if (errno != ENOTDIR)
2552 return -errno;
2553
2554 if (delete_root && !only_dirs)
2555 if (unlink(path) < 0)
2556 return -errno;
2557
2558 return 0;
2559 }
2560
2561 r = rm_rf_children(fd, only_dirs);
2562
2563 if (delete_root)
2564 if (rmdir(path) < 0) {
2565 if (r == 0)
2566 r = -errno;
2567 }
2568
2569 return r;
2570}
2571
2572int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid) {
2573 assert(path);
2574
2575 /* Under the assumption that we are running privileged we
2576 * first change the access mode and only then hand out
2577 * ownership to avoid a window where access is too open. */
2578
2579 if (chmod(path, mode) < 0)
2580 return -errno;
2581
2582 if (chown(path, uid, gid) < 0)
2583 return -errno;
2584
2585 return 0;
ef2f1067
LP		 2586}
2587
82c121a4
LP		 2588cpu_set_t* cpu_set_malloc(unsigned *ncpus) {
2589 cpu_set_t *r;
2590 unsigned n = 1024;
2591
2592 /* Allocates the cpuset in the right size */
2593
2594 for (;;) {
2595 if (!(r = CPU_ALLOC(n)))
2596 return NULL;
2597
2598 if (sched_getaffinity(0, CPU_ALLOC_SIZE(n), r) >= 0) {
2599 CPU_ZERO_S(CPU_ALLOC_SIZE(n), r);
2600
2601 if (ncpus)
2602 *ncpus = n;
2603
2604 return r;
2605 }
2606
2607 CPU_FREE(r);
2608
2609 if (errno != EINVAL)
2610 return NULL;
2611
2612 n *= 2;
2613 }
2614}
2615
9e58ff9c
LP		 2616void status_vprintf(const char *format, va_list ap) {
2617 char *s = NULL;
2618 int fd = -1;
2619
2620 assert(format);
2621
2622 /* This independent of logging, as status messages are
2623 * optional and go exclusively to the console. */
2624
2625 if (vasprintf(&s, format, ap) < 0)
2626 goto finish;
2627
2628 if ((fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC)) < 0)
2629 goto finish;
2630
2631 write(fd, s, strlen(s));
2632
2633finish:
2634 free(s);
2635
2636 if (fd >= 0)
2637 close_nointr_nofail(fd);
2638}
2639
c846ff47
LP		 2640void status_printf(const char *format, ...) {
2641 va_list ap;
2642
2643 assert(format);
2644
2645 va_start(ap, format);
2646 status_vprintf(format, ap);
2647 va_end(ap);
2648}
2649
2650void status_welcome(void) {
2651
2652#if defined(TARGET_FEDORA)
2653 char *r;
2654
2655 if (read_one_line_file("/etc/system-release", &r) < 0)
2656 return;
2657
2658 truncate_nl(r);
2659
2660 /* This tries to mimic the color magic the old Red Hat sysinit
2661 * script did. */
2662
2663 if (startswith(r, "Red Hat"))
2e54424d 2664 status_printf("Welcome to \x1B[0;31m%s\x1B[0m!\n", r); /* Red for RHEL */
c846ff47 2665 else if (startswith(r, "Fedora"))
2e54424d 2666 status_printf("Welcome to \x1B[0;34m%s\x1B[0m!\n", r); /* Blue for Fedora */
c846ff47 2667 else
2e54424d 2668 status_printf("Welcome to %s!\n", r);
c846ff47
LP		 2669
2670 free(r);
2671
2672#elif defined(TARGET_SUSE)
2673 char *r;
2674
2675 if (read_one_line_file("/etc/SuSE-release", &r) < 0)
2676 return;
2677
2678 truncate_nl(r);
2679
2e54424d 2680 status_printf("Welcome to \x1B[0;32m%s\x1B[0m!\n", r); /* Green for SUSE */
c846ff47
LP		 2681 free(r);
2682#else
2683#warning "You probably should add a welcome text logic here."
2684#endif
2685}
2686
1dccbe19
LP		 2687static const char *const ioprio_class_table[] = {
2688 [IOPRIO_CLASS_NONE] = "none",
2689 [IOPRIO_CLASS_RT] = "realtime",
2690 [IOPRIO_CLASS_BE] = "best-effort",
2691 [IOPRIO_CLASS_IDLE] = "idle"
2692};
2693
2694DEFINE_STRING_TABLE_LOOKUP(ioprio_class, int);
2695
2696static const char *const sigchld_code_table[] = {
2697 [CLD_EXITED] = "exited",
2698 [CLD_KILLED] = "killed",
2699 [CLD_DUMPED] = "dumped",
2700 [CLD_TRAPPED] = "trapped",
2701 [CLD_STOPPED] = "stopped",
2702 [CLD_CONTINUED] = "continued",
2703};
2704
2705DEFINE_STRING_TABLE_LOOKUP(sigchld_code, int);
2706
2707static const char *const log_facility_table[LOG_NFACILITIES] = {
2708 [LOG_FAC(LOG_KERN)] = "kern",
2709 [LOG_FAC(LOG_USER)] = "user",
2710 [LOG_FAC(LOG_MAIL)] = "mail",
2711 [LOG_FAC(LOG_DAEMON)] = "daemon",
2712 [LOG_FAC(LOG_AUTH)] = "auth",
2713 [LOG_FAC(LOG_SYSLOG)] = "syslog",
2714 [LOG_FAC(LOG_LPR)] = "lpr",
2715 [LOG_FAC(LOG_NEWS)] = "news",
2716 [LOG_FAC(LOG_UUCP)] = "uucp",
2717 [LOG_FAC(LOG_CRON)] = "cron",
2718 [LOG_FAC(LOG_AUTHPRIV)] = "authpriv",
2719 [LOG_FAC(LOG_FTP)] = "ftp",
2720 [LOG_FAC(LOG_LOCAL0)] = "local0",
2721 [LOG_FAC(LOG_LOCAL1)] = "local1",
2722 [LOG_FAC(LOG_LOCAL2)] = "local2",
2723 [LOG_FAC(LOG_LOCAL3)] = "local3",
2724 [LOG_FAC(LOG_LOCAL4)] = "local4",
2725 [LOG_FAC(LOG_LOCAL5)] = "local5",
2726 [LOG_FAC(LOG_LOCAL6)] = "local6",
2727 [LOG_FAC(LOG_LOCAL7)] = "local7"
2728};
2729
2730DEFINE_STRING_TABLE_LOOKUP(log_facility, int);
2731
2732static const char *const log_level_table[] = {
2733 [LOG_EMERG] = "emerg",
2734 [LOG_ALERT] = "alert",
2735 [LOG_CRIT] = "crit",
2736 [LOG_ERR] = "err",
2737 [LOG_WARNING] = "warning",
2738 [LOG_NOTICE] = "notice",
2739 [LOG_INFO] = "info",
2740 [LOG_DEBUG] = "debug"
2741};
2742
2743DEFINE_STRING_TABLE_LOOKUP(log_level, int);
2744
2745static const char* const sched_policy_table[] = {
2746 [SCHED_OTHER] = "other",
2747 [SCHED_BATCH] = "batch",
2748 [SCHED_IDLE] = "idle",
2749 [SCHED_FIFO] = "fifo",
2750 [SCHED_RR] = "rr"
2751};
2752
2753DEFINE_STRING_TABLE_LOOKUP(sched_policy, int);
2754
2755static const char* const rlimit_table[] = {
2756 [RLIMIT_CPU] = "LimitCPU",
2757 [RLIMIT_FSIZE] = "LimitFSIZE",
2758 [RLIMIT_DATA] = "LimitDATA",
2759 [RLIMIT_STACK] = "LimitSTACK",
2760 [RLIMIT_CORE] = "LimitCORE",
2761 [RLIMIT_RSS] = "LimitRSS",
2762 [RLIMIT_NOFILE] = "LimitNOFILE",
2763 [RLIMIT_AS] = "LimitAS",
2764 [RLIMIT_NPROC] = "LimitNPROC",
2765 [RLIMIT_MEMLOCK] = "LimitMEMLOCK",
2766 [RLIMIT_LOCKS] = "LimitLOCKS",
2767 [RLIMIT_SIGPENDING] = "LimitSIGPENDING",
2768 [RLIMIT_MSGQUEUE] = "LimitMSGQUEUE",
2769 [RLIMIT_NICE] = "LimitNICE",
2770 [RLIMIT_RTPRIO] = "LimitRTPRIO",
2771 [RLIMIT_RTTIME] = "LimitRTTIME"
2772};
2773
2774DEFINE_STRING_TABLE_LOOKUP(rlimit, int);
4fd5948e
LP		 2775
2776static const char* const ip_tos_table[] = {
2777 [IPTOS_LOWDELAY] = "low-delay",
2778 [IPTOS_THROUGHPUT] = "throughput",
2779 [IPTOS_RELIABILITY] = "reliability",
2780 [IPTOS_LOWCOST] = "low-cost",
2781};
2782
2783DEFINE_STRING_TABLE_LOOKUP(ip_tos, int);
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