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1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
3 /***
4 This file is part of systemd.
5
6 Copyright 2010 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU 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
22 #include <linux/oom.h>
23 #include <assert.h>
24 #include <errno.h>
25 #include <string.h>
26 #include <unistd.h>
27 #include <fcntl.h>
28 #include <sched.h>
29 #include <sys/prctl.h>
30 #include <sys/mount.h>
31 #include <linux/fs.h>
32 #include <sys/stat.h>
33
34 #include "unit.h"
35 #include "strv.h"
36 #include "conf-parser.h"
37 #include "load-fragment.h"
38 #include "log.h"
39 #include "ioprio.h"
40 #include "securebits.h"
41 #include "missing.h"
42 #include "unit-name.h"
43 #include "bus-errors.h"
44
45 #ifndef HAVE_SYSV_COMPAT
46 static int config_parse_warn_compat(
47 const char *filename,
48 unsigned line,
49 const char *section,
50 const char *lvalue,
51 const char *rvalue,
52 void *data,
53 void *userdata) {
54
55 log_debug("[%s:%u] Support for option %s= has been disabled at compile time and is ignored", filename, line, lvalue);
56 return 0;
57 }
58 #endif
59
60 static int config_parse_deps(
61 const char *filename,
62 unsigned line,
63 const char *section,
64 const char *lvalue,
65 const char *rvalue,
66 void *data,
67 void *userdata) {
68
69 UnitDependency d = PTR_TO_UINT(data);
70 Unit *u = userdata;
71 char *w;
72 size_t l;
73 char *state;
74
75 assert(filename);
76 assert(lvalue);
77 assert(rvalue);
78
79 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
80 char *t, *k;
81 int r;
82
83 if (!(t = strndup(w, l)))
84 return -ENOMEM;
85
86 k = unit_name_printf(u, t);
87 free(t);
88
89 if (!k)
90 return -ENOMEM;
91
92 r = unit_add_dependency_by_name(u, d, k, NULL, true);
93
94 if (r < 0) {
95 log_error("Failed to add dependency on %s, ignoring: %s", k, strerror(-r));
96 free(k);
97 return 0;
98 }
99
100 free(k);
101 }
102
103 return 0;
104 }
105
106 static int config_parse_names(
107 const char *filename,
108 unsigned line,
109 const char *section,
110 const char *lvalue,
111 const char *rvalue,
112 void *data,
113 void *userdata) {
114
115 Unit *u = userdata;
116 char *w;
117 size_t l;
118 char *state;
119
120 assert(filename);
121 assert(lvalue);
122 assert(rvalue);
123 assert(data);
124
125 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
126 char *t, *k;
127 int r;
128
129 if (!(t = strndup(w, l)))
130 return -ENOMEM;
131
132 k = unit_name_printf(u, t);
133 free(t);
134
135 if (!k)
136 return -ENOMEM;
137
138 r = unit_merge_by_name(u, k);
139
140 if (r < 0) {
141 log_error("Failed to add name %s, ignoring: %s", k, strerror(-r));
142 free(k);
143 return 0;
144 }
145
146 free(k);
147 }
148
149 return 0;
150 }
151
152 static int config_parse_string_printf(
153 const char *filename,
154 unsigned line,
155 const char *section,
156 const char *lvalue,
157 const char *rvalue,
158 void *data,
159 void *userdata) {
160
161 Unit *u = userdata;
162 char **s = data;
163 char *k;
164
165 assert(filename);
166 assert(lvalue);
167 assert(rvalue);
168 assert(s);
169 assert(u);
170
171 if (!(k = unit_full_printf(u, rvalue)))
172 return -ENOMEM;
173
174 free(*s);
175 if (*k)
176 *s = k;
177 else {
178 free(k);
179 *s = NULL;
180 }
181
182 return 0;
183 }
184
185 static int config_parse_listen(
186 const char *filename,
187 unsigned line,
188 const char *section,
189 const char *lvalue,
190 const char *rvalue,
191 void *data,
192 void *userdata) {
193
194 int r;
195 SocketPort *p;
196 Socket *s;
197
198 assert(filename);
199 assert(lvalue);
200 assert(rvalue);
201 assert(data);
202
203 s = (Socket*) data;
204
205 if (!(p = new0(SocketPort, 1)))
206 return -ENOMEM;
207
208 if (streq(lvalue, "ListenFIFO")) {
209 p->type = SOCKET_FIFO;
210
211 if (!(p->path = strdup(rvalue))) {
212 free(p);
213 return -ENOMEM;
214 }
215
216 path_kill_slashes(p->path);
217 } else {
218 p->type = SOCKET_SOCKET;
219
220 if ((r = socket_address_parse(&p->address, rvalue)) < 0) {
221 log_error("[%s:%u] Failed to parse address value, ignoring: %s", filename, line, rvalue);
222 free(p);
223 return 0;
224 }
225
226 if (streq(lvalue, "ListenStream"))
227 p->address.type = SOCK_STREAM;
228 else if (streq(lvalue, "ListenDatagram"))
229 p->address.type = SOCK_DGRAM;
230 else {
231 assert(streq(lvalue, "ListenSequentialPacket"));
232 p->address.type = SOCK_SEQPACKET;
233 }
234
235 if (socket_address_family(&p->address) != AF_LOCAL && p->address.type == SOCK_SEQPACKET) {
236 log_error("[%s:%u] Address family not supported, ignoring: %s", filename, line, rvalue);
237 free(p);
238 return 0;
239 }
240 }
241
242 p->fd = -1;
243 LIST_PREPEND(SocketPort, port, s->ports, p);
244
245 return 0;
246 }
247
248 static int config_parse_socket_bind(
249 const char *filename,
250 unsigned line,
251 const char *section,
252 const char *lvalue,
253 const char *rvalue,
254 void *data,
255 void *userdata) {
256
257 Socket *s;
258 SocketAddressBindIPv6Only b;
259
260 assert(filename);
261 assert(lvalue);
262 assert(rvalue);
263 assert(data);
264
265 s = (Socket*) data;
266
267 if ((b = socket_address_bind_ipv6_only_from_string(rvalue)) < 0) {
268 int r;
269
270 if ((r = parse_boolean(rvalue)) < 0) {
271 log_error("[%s:%u] Failed to parse bind IPv6 only value, ignoring: %s", filename, line, rvalue);
272 return 0;
273 }
274
275 s->bind_ipv6_only = r ? SOCKET_ADDRESS_IPV6_ONLY : SOCKET_ADDRESS_BOTH;
276 } else
277 s->bind_ipv6_only = b;
278
279 return 0;
280 }
281
282 static int config_parse_nice(
283 const char *filename,
284 unsigned line,
285 const char *section,
286 const char *lvalue,
287 const char *rvalue,
288 void *data,
289 void *userdata) {
290
291 ExecContext *c = data;
292 int priority, r;
293
294 assert(filename);
295 assert(lvalue);
296 assert(rvalue);
297 assert(data);
298
299 if ((r = safe_atoi(rvalue, &priority)) < 0) {
300 log_error("[%s:%u] Failed to parse nice priority, ignoring: %s. ", filename, line, rvalue);
301 return 0;
302 }
303
304 if (priority < PRIO_MIN || priority >= PRIO_MAX) {
305 log_error("[%s:%u] Nice priority out of range, ignoring: %s", filename, line, rvalue);
306 return 0;
307 }
308
309 c->nice = priority;
310 c->nice_set = false;
311
312 return 0;
313 }
314
315 static int config_parse_oom_score_adjust(
316 const char *filename,
317 unsigned line,
318 const char *section,
319 const char *lvalue,
320 const char *rvalue,
321 void *data,
322 void *userdata) {
323
324 ExecContext *c = data;
325 int oa, r;
326
327 assert(filename);
328 assert(lvalue);
329 assert(rvalue);
330 assert(data);
331
332 if ((r = safe_atoi(rvalue, &oa)) < 0) {
333 log_error("[%s:%u] Failed to parse the OOM score adjust value, ignoring: %s", filename, line, rvalue);
334 return 0;
335 }
336
337 if (oa < OOM_SCORE_ADJ_MIN || oa > OOM_SCORE_ADJ_MAX) {
338 log_error("[%s:%u] OOM score adjust value out of range, ignoring: %s", filename, line, rvalue);
339 return 0;
340 }
341
342 c->oom_score_adjust = oa;
343 c->oom_score_adjust_set = true;
344
345 return 0;
346 }
347
348 static int config_parse_mode(
349 const char *filename,
350 unsigned line,
351 const char *section,
352 const char *lvalue,
353 const char *rvalue,
354 void *data,
355 void *userdata) {
356
357 mode_t *m = data;
358 long l;
359 char *x = NULL;
360
361 assert(filename);
362 assert(lvalue);
363 assert(rvalue);
364 assert(data);
365
366 errno = 0;
367 l = strtol(rvalue, &x, 8);
368 if (!x || *x || errno) {
369 log_error("[%s:%u] Failed to parse mode value, ignoring: %s", filename, line, rvalue);
370 return 0;
371 }
372
373 if (l < 0000 || l > 07777) {
374 log_error("[%s:%u] mode value out of range, ignoring: %s", filename, line, rvalue);
375 return 0;
376 }
377
378 *m = (mode_t) l;
379 return 0;
380 }
381
382 static int config_parse_exec(
383 const char *filename,
384 unsigned line,
385 const char *section,
386 const char *lvalue,
387 const char *rvalue,
388 void *data,
389 void *userdata) {
390
391 ExecCommand **e = data, *nce;
392 char *path, **n;
393 unsigned k;
394
395 assert(filename);
396 assert(lvalue);
397 assert(rvalue);
398 assert(e);
399
400 /* We accept an absolute path as first argument, or
401 * alternatively an absolute prefixed with @ to allow
402 * overriding of argv[0]. */
403
404 for (;;) {
405 char *w;
406 size_t l;
407 char *state;
408 bool honour_argv0 = false, ignore = false;
409
410 path = NULL;
411 nce = NULL;
412 n = NULL;
413
414 rvalue += strspn(rvalue, WHITESPACE);
415
416 if (rvalue[0] == 0)
417 break;
418
419 if (rvalue[0] == '-') {
420 ignore = true;
421 rvalue ++;
422 }
423
424 if (rvalue[0] == '@') {
425 honour_argv0 = true;
426 rvalue ++;
427 }
428
429 if (*rvalue != '/') {
430 log_error("[%s:%u] Invalid executable path in command line, ignoring: %s", filename, line, rvalue);
431 return 0;
432 }
433
434 k = 0;
435 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
436 if (strncmp(w, ";", MAX(l, 1U)) == 0)
437 break;
438
439 k++;
440 }
441
442 if (!(n = new(char*, k + !honour_argv0)))
443 return -ENOMEM;
444
445 k = 0;
446 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
447 if (strncmp(w, ";", MAX(l, 1U)) == 0)
448 break;
449
450 if (honour_argv0 && w == rvalue) {
451 assert(!path);
452 if (!(path = cunescape_length(w, l)))
453 goto fail;
454 } else {
455 if (!(n[k++] = cunescape_length(w, l)))
456 goto fail;
457 }
458 }
459
460 n[k] = NULL;
461
462 if (!n[0]) {
463 log_error("[%s:%u] Invalid command line, ignoring: %s", filename, line, rvalue);
464 strv_free(n);
465 return 0;
466 }
467
468 if (!path)
469 if (!(path = strdup(n[0])))
470 goto fail;
471
472 assert(path_is_absolute(path));
473
474 if (!(nce = new0(ExecCommand, 1)))
475 goto fail;
476
477 nce->argv = n;
478 nce->path = path;
479 nce->ignore = ignore;
480
481 path_kill_slashes(nce->path);
482
483 exec_command_append_list(e, nce);
484
485 rvalue = state;
486 }
487
488 return 0;
489
490 fail:
491 n[k] = NULL;
492 strv_free(n);
493 free(path);
494 free(nce);
495
496 return -ENOMEM;
497 }
498
499 static int config_parse_usec(
500 const char *filename,
501 unsigned line,
502 const char *section,
503 const char *lvalue,
504 const char *rvalue,
505 void *data,
506 void *userdata) {
507
508 usec_t *usec = data;
509 int r;
510
511 assert(filename);
512 assert(lvalue);
513 assert(rvalue);
514 assert(data);
515
516 if ((r = parse_usec(rvalue, usec)) < 0) {
517 log_error("[%s:%u] Failed to parse time value, ignoring: %s", filename, line, rvalue);
518 return 0;
519 }
520
521 return 0;
522 }
523
524 static DEFINE_CONFIG_PARSE_ENUM(config_parse_service_type, service_type, ServiceType, "Failed to parse service type");
525 static DEFINE_CONFIG_PARSE_ENUM(config_parse_service_restart, service_restart, ServiceRestart, "Failed to parse service restart specifier");
526
527 static int config_parse_bindtodevice(
528 const char *filename,
529 unsigned line,
530 const char *section,
531 const char *lvalue,
532 const char *rvalue,
533 void *data,
534 void *userdata) {
535
536 Socket *s = data;
537 char *n;
538
539 assert(filename);
540 assert(lvalue);
541 assert(rvalue);
542 assert(data);
543
544 if (rvalue[0] && !streq(rvalue, "*")) {
545 if (!(n = strdup(rvalue)))
546 return -ENOMEM;
547 } else
548 n = NULL;
549
550 free(s->bind_to_device);
551 s->bind_to_device = n;
552
553 return 0;
554 }
555
556 static DEFINE_CONFIG_PARSE_ENUM(config_parse_output, exec_output, ExecOutput, "Failed to parse output specifier");
557 static DEFINE_CONFIG_PARSE_ENUM(config_parse_input, exec_input, ExecInput, "Failed to parse input specifier");
558
559 static int config_parse_facility(
560 const char *filename,
561 unsigned line,
562 const char *section,
563 const char *lvalue,
564 const char *rvalue,
565 void *data,
566 void *userdata) {
567
568
569 int *o = data, x;
570
571 assert(filename);
572 assert(lvalue);
573 assert(rvalue);
574 assert(data);
575
576 if ((x = log_facility_from_string(rvalue)) < 0) {
577 log_error("[%s:%u] Failed to parse log facility, ignoring: %s", filename, line, rvalue);
578 return 0;
579 }
580
581 *o = LOG_MAKEPRI(x, LOG_PRI(*o));
582
583 return 0;
584 }
585
586 static int config_parse_level(
587 const char *filename,
588 unsigned line,
589 const char *section,
590 const char *lvalue,
591 const char *rvalue,
592 void *data,
593 void *userdata) {
594
595
596 int *o = data, x;
597
598 assert(filename);
599 assert(lvalue);
600 assert(rvalue);
601 assert(data);
602
603 if ((x = log_level_from_string(rvalue)) < 0) {
604 log_error("[%s:%u] Failed to parse log level, ignoring: %s", filename, line, rvalue);
605 return 0;
606 }
607
608 *o = LOG_MAKEPRI(LOG_FAC(*o), x);
609 return 0;
610 }
611
612 static int config_parse_io_class(
613 const char *filename,
614 unsigned line,
615 const char *section,
616 const char *lvalue,
617 const char *rvalue,
618 void *data,
619 void *userdata) {
620
621 ExecContext *c = data;
622 int x;
623
624 assert(filename);
625 assert(lvalue);
626 assert(rvalue);
627 assert(data);
628
629 if ((x = ioprio_class_from_string(rvalue)) < 0) {
630 log_error("[%s:%u] Failed to parse IO scheduling class, ignoring: %s", filename, line, rvalue);
631 return 0;
632 }
633
634 c->ioprio = IOPRIO_PRIO_VALUE(x, IOPRIO_PRIO_DATA(c->ioprio));
635 c->ioprio_set = true;
636
637 return 0;
638 }
639
640 static int config_parse_io_priority(
641 const char *filename,
642 unsigned line,
643 const char *section,
644 const char *lvalue,
645 const char *rvalue,
646 void *data,
647 void *userdata) {
648
649 ExecContext *c = data;
650 int i;
651
652 assert(filename);
653 assert(lvalue);
654 assert(rvalue);
655 assert(data);
656
657 if (safe_atoi(rvalue, &i) < 0 || i < 0 || i >= IOPRIO_BE_NR) {
658 log_error("[%s:%u] Failed to parse io priority, ignoring: %s", filename, line, rvalue);
659 return 0;
660 }
661
662 c->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_PRIO_CLASS(c->ioprio), i);
663 c->ioprio_set = true;
664
665 return 0;
666 }
667
668 static int config_parse_cpu_sched_policy(
669 const char *filename,
670 unsigned line,
671 const char *section,
672 const char *lvalue,
673 const char *rvalue,
674 void *data,
675 void *userdata) {
676
677
678 ExecContext *c = data;
679 int x;
680
681 assert(filename);
682 assert(lvalue);
683 assert(rvalue);
684 assert(data);
685
686 if ((x = sched_policy_from_string(rvalue)) < 0) {
687 log_error("[%s:%u] Failed to parse CPU scheduling policy, ignoring: %s", filename, line, rvalue);
688 return 0;
689 }
690
691 c->cpu_sched_policy = x;
692 c->cpu_sched_set = true;
693
694 return 0;
695 }
696
697 static int config_parse_cpu_sched_prio(
698 const char *filename,
699 unsigned line,
700 const char *section,
701 const char *lvalue,
702 const char *rvalue,
703 void *data,
704 void *userdata) {
705
706 ExecContext *c = data;
707 int i;
708
709 assert(filename);
710 assert(lvalue);
711 assert(rvalue);
712 assert(data);
713
714 /* On Linux RR/FIFO have the same range */
715 if (safe_atoi(rvalue, &i) < 0 || i < sched_get_priority_min(SCHED_RR) || i > sched_get_priority_max(SCHED_RR)) {
716 log_error("[%s:%u] Failed to parse CPU scheduling priority, ignoring: %s", filename, line, rvalue);
717 return 0;
718 }
719
720 c->cpu_sched_priority = i;
721 c->cpu_sched_set = true;
722
723 return 0;
724 }
725
726 static int config_parse_cpu_affinity(
727 const char *filename,
728 unsigned line,
729 const char *section,
730 const char *lvalue,
731 const char *rvalue,
732 void *data,
733 void *userdata) {
734
735 ExecContext *c = data;
736 char *w;
737 size_t l;
738 char *state;
739
740 assert(filename);
741 assert(lvalue);
742 assert(rvalue);
743 assert(data);
744
745 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
746 char *t;
747 int r;
748 unsigned cpu;
749
750 if (!(t = strndup(w, l)))
751 return -ENOMEM;
752
753 r = safe_atou(t, &cpu);
754 free(t);
755
756 if (!(c->cpuset))
757 if (!(c->cpuset = cpu_set_malloc(&c->cpuset_ncpus)))
758 return -ENOMEM;
759
760 if (r < 0 || cpu >= c->cpuset_ncpus) {
761 log_error("[%s:%u] Failed to parse CPU affinity, ignoring: %s", filename, line, rvalue);
762 return 0;
763 }
764
765 CPU_SET_S(cpu, CPU_ALLOC_SIZE(c->cpuset_ncpus), c->cpuset);
766 }
767
768 return 0;
769 }
770
771 static int config_parse_capabilities(
772 const char *filename,
773 unsigned line,
774 const char *section,
775 const char *lvalue,
776 const char *rvalue,
777 void *data,
778 void *userdata) {
779
780 ExecContext *c = data;
781 cap_t cap;
782
783 assert(filename);
784 assert(lvalue);
785 assert(rvalue);
786 assert(data);
787
788 if (!(cap = cap_from_text(rvalue))) {
789 if (errno == ENOMEM)
790 return -ENOMEM;
791
792 log_error("[%s:%u] Failed to parse capabilities, ignoring: %s", filename, line, rvalue);
793 return 0;
794 }
795
796 if (c->capabilities)
797 cap_free(c->capabilities);
798 c->capabilities = cap;
799
800 return 0;
801 }
802
803 static int config_parse_secure_bits(
804 const char *filename,
805 unsigned line,
806 const char *section,
807 const char *lvalue,
808 const char *rvalue,
809 void *data,
810 void *userdata) {
811
812 ExecContext *c = data;
813 char *w;
814 size_t l;
815 char *state;
816
817 assert(filename);
818 assert(lvalue);
819 assert(rvalue);
820 assert(data);
821
822 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
823 if (first_word(w, "keep-caps"))
824 c->secure_bits |= SECURE_KEEP_CAPS;
825 else if (first_word(w, "keep-caps-locked"))
826 c->secure_bits |= SECURE_KEEP_CAPS_LOCKED;
827 else if (first_word(w, "no-setuid-fixup"))
828 c->secure_bits |= SECURE_NO_SETUID_FIXUP;
829 else if (first_word(w, "no-setuid-fixup-locked"))
830 c->secure_bits |= SECURE_NO_SETUID_FIXUP_LOCKED;
831 else if (first_word(w, "noroot"))
832 c->secure_bits |= SECURE_NOROOT;
833 else if (first_word(w, "noroot-locked"))
834 c->secure_bits |= SECURE_NOROOT_LOCKED;
835 else {
836 log_error("[%s:%u] Failed to parse secure bits, ignoring: %s", filename, line, rvalue);
837 return 0;
838 }
839 }
840
841 return 0;
842 }
843
844 static int config_parse_bounding_set(
845 const char *filename,
846 unsigned line,
847 const char *section,
848 const char *lvalue,
849 const char *rvalue,
850 void *data,
851 void *userdata) {
852
853 ExecContext *c = data;
854 char *w;
855 size_t l;
856 char *state;
857
858 assert(filename);
859 assert(lvalue);
860 assert(rvalue);
861 assert(data);
862
863 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
864 char *t;
865 int r;
866 cap_value_t cap;
867
868 if (!(t = strndup(w, l)))
869 return -ENOMEM;
870
871 r = cap_from_name(t, &cap);
872 free(t);
873
874 if (r < 0) {
875 log_error("[%s:%u] Failed to parse capability bounding set, ignoring: %s", filename, line, rvalue);
876 return 0;
877 }
878
879 c->capability_bounding_set_drop |= 1 << cap;
880 }
881
882 return 0;
883 }
884
885 static int config_parse_timer_slack_nsec(
886 const char *filename,
887 unsigned line,
888 const char *section,
889 const char *lvalue,
890 const char *rvalue,
891 void *data,
892 void *userdata) {
893
894 ExecContext *c = data;
895 unsigned long u;
896 int r;
897
898 assert(filename);
899 assert(lvalue);
900 assert(rvalue);
901 assert(data);
902
903 if ((r = safe_atolu(rvalue, &u)) < 0) {
904 log_error("[%s:%u] Failed to parse time slack value, ignoring: %s", filename, line, rvalue);
905 return 0;
906 }
907
908 c->timer_slack_nsec = u;
909
910 return 0;
911 }
912
913 static int config_parse_limit(
914 const char *filename,
915 unsigned line,
916 const char *section,
917 const char *lvalue,
918 const char *rvalue,
919 void *data,
920 void *userdata) {
921
922 struct rlimit **rl = data;
923 unsigned long long u;
924 int r;
925
926 assert(filename);
927 assert(lvalue);
928 assert(rvalue);
929 assert(data);
930
931 if ((r = safe_atollu(rvalue, &u)) < 0) {
932 log_error("[%s:%u] Failed to parse resource value, ignoring: %s", filename, line, rvalue);
933 return 0;
934 }
935
936 if (!*rl)
937 if (!(*rl = new(struct rlimit, 1)))
938 return -ENOMEM;
939
940 (*rl)->rlim_cur = (*rl)->rlim_max = (rlim_t) u;
941 return 0;
942 }
943
944 static int config_parse_cgroup(
945 const char *filename,
946 unsigned line,
947 const char *section,
948 const char *lvalue,
949 const char *rvalue,
950 void *data,
951 void *userdata) {
952
953 Unit *u = userdata;
954 char *w;
955 size_t l;
956 char *state;
957
958 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
959 char *t;
960 int r;
961
962 if (!(t = cunescape_length(w, l)))
963 return -ENOMEM;
964
965 r = unit_add_cgroup_from_text(u, t);
966 free(t);
967
968 if (r < 0) {
969 log_error("[%s:%u] Failed to parse cgroup value, ignoring: %s", filename, line, rvalue);
970 return 0;
971 }
972 }
973
974 return 0;
975 }
976
977 #ifdef HAVE_SYSV_COMPAT
978 static int config_parse_sysv_priority(
979 const char *filename,
980 unsigned line,
981 const char *section,
982 const char *lvalue,
983 const char *rvalue,
984 void *data,
985 void *userdata) {
986
987 int *priority = data;
988 int r, i;
989
990 assert(filename);
991 assert(lvalue);
992 assert(rvalue);
993 assert(data);
994
995 if ((r = safe_atoi(rvalue, &i)) < 0 || i < 0) {
996 log_error("[%s:%u] Failed to parse SysV start priority, ignoring: %s", filename, line, rvalue);
997 return 0;
998 }
999
1000 *priority = (int) i;
1001 return 0;
1002 }
1003 #endif
1004
1005 static int config_parse_fsck_passno(
1006 const char *filename,
1007 unsigned line,
1008 const char *section,
1009 const char *lvalue,
1010 const char *rvalue,
1011 void *data,
1012 void *userdata) {
1013
1014 int *passno = data;
1015 int r, i;
1016
1017 assert(filename);
1018 assert(lvalue);
1019 assert(rvalue);
1020 assert(data);
1021
1022 if ((r = safe_atoi(rvalue, &i)) < 0 || i < 0) {
1023 log_error("[%s:%u] Failed to parse fsck pass number, ignoring: %s", filename, line, rvalue);
1024 return 0;
1025 }
1026
1027 *passno = (int) i;
1028 return 0;
1029 }
1030
1031 static DEFINE_CONFIG_PARSE_ENUM(config_parse_kill_mode, kill_mode, KillMode, "Failed to parse kill mode");
1032
1033 static int config_parse_kill_signal(
1034 const char *filename,
1035 unsigned line,
1036 const char *section,
1037 const char *lvalue,
1038 const char *rvalue,
1039 void *data,
1040 void *userdata) {
1041
1042 int *sig = data;
1043 int r;
1044
1045 assert(filename);
1046 assert(lvalue);
1047 assert(rvalue);
1048 assert(sig);
1049
1050 if ((r = signal_from_string_try_harder(rvalue)) <= 0) {
1051 log_error("[%s:%u] Failed to parse kill signal, ignoring: %s", filename, line, rvalue);
1052 return 0;
1053 }
1054
1055 *sig = r;
1056 return 0;
1057 }
1058
1059 static int config_parse_mount_flags(
1060 const char *filename,
1061 unsigned line,
1062 const char *section,
1063 const char *lvalue,
1064 const char *rvalue,
1065 void *data,
1066 void *userdata) {
1067
1068 ExecContext *c = data;
1069 char *w;
1070 size_t l;
1071 char *state;
1072 unsigned long flags = 0;
1073
1074 assert(filename);
1075 assert(lvalue);
1076 assert(rvalue);
1077 assert(data);
1078
1079 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
1080 if (strncmp(w, "shared", MAX(l, 6U)) == 0)
1081 flags |= MS_SHARED;
1082 else if (strncmp(w, "slave", MAX(l, 5U)) == 0)
1083 flags |= MS_SLAVE;
1084 else if (strncmp(w, "private", MAX(l, 7U)) == 0)
1085 flags |= MS_PRIVATE;
1086 else {
1087 log_error("[%s:%u] Failed to parse mount flags, ignoring: %s", filename, line, rvalue);
1088 return 0;
1089 }
1090 }
1091
1092 c->mount_flags = flags;
1093 return 0;
1094 }
1095
1096 static int config_parse_timer(
1097 const char *filename,
1098 unsigned line,
1099 const char *section,
1100 const char *lvalue,
1101 const char *rvalue,
1102 void *data,
1103 void *userdata) {
1104
1105 Timer *t = data;
1106 usec_t u;
1107 int r;
1108 TimerValue *v;
1109 TimerBase b;
1110
1111 assert(filename);
1112 assert(lvalue);
1113 assert(rvalue);
1114 assert(data);
1115
1116 if ((b = timer_base_from_string(lvalue)) < 0) {
1117 log_error("[%s:%u] Failed to parse timer base, ignoring: %s", filename, line, lvalue);
1118 return 0;
1119 }
1120
1121 if ((r = parse_usec(rvalue, &u)) < 0) {
1122 log_error("[%s:%u] Failed to parse timer value, ignoring: %s", filename, line, rvalue);
1123 return 0;
1124 }
1125
1126 if (!(v = new0(TimerValue, 1)))
1127 return -ENOMEM;
1128
1129 v->base = b;
1130 v->value = u;
1131
1132 LIST_PREPEND(TimerValue, value, t->values, v);
1133
1134 return 0;
1135 }
1136
1137 static int config_parse_timer_unit(
1138 const char *filename,
1139 unsigned line,
1140 const char *section,
1141 const char *lvalue,
1142 const char *rvalue,
1143 void *data,
1144 void *userdata) {
1145
1146 Timer *t = data;
1147 int r;
1148 DBusError error;
1149
1150 assert(filename);
1151 assert(lvalue);
1152 assert(rvalue);
1153 assert(data);
1154
1155 dbus_error_init(&error);
1156
1157 if (endswith(rvalue, ".timer")) {
1158 log_error("[%s:%u] Unit cannot be of type timer, ignoring: %s", filename, line, rvalue);
1159 return 0;
1160 }
1161
1162 if ((r = manager_load_unit(t->meta.manager, rvalue, NULL, NULL, &t->unit)) < 0) {
1163 log_error("[%s:%u] Failed to load unit %s, ignoring: %s", filename, line, rvalue, bus_error(&error, r));
1164 dbus_error_free(&error);
1165 return 0;
1166 }
1167
1168 return 0;
1169 }
1170
1171 static int config_parse_path_spec(
1172 const char *filename,
1173 unsigned line,
1174 const char *section,
1175 const char *lvalue,
1176 const char *rvalue,
1177 void *data,
1178 void *userdata) {
1179
1180 Path *p = data;
1181 PathSpec *s;
1182 PathType b;
1183
1184 assert(filename);
1185 assert(lvalue);
1186 assert(rvalue);
1187 assert(data);
1188
1189 if ((b = path_type_from_string(lvalue)) < 0) {
1190 log_error("[%s:%u] Failed to parse path type, ignoring: %s", filename, line, lvalue);
1191 return 0;
1192 }
1193
1194 if (!path_is_absolute(rvalue)) {
1195 log_error("[%s:%u] Path is not absolute, ignoring: %s", filename, line, rvalue);
1196 return 0;
1197 }
1198
1199 if (!(s = new0(PathSpec, 1)))
1200 return -ENOMEM;
1201
1202 if (!(s->path = strdup(rvalue))) {
1203 free(s);
1204 return -ENOMEM;
1205 }
1206
1207 path_kill_slashes(s->path);
1208
1209 s->type = b;
1210 s->inotify_fd = -1;
1211
1212 LIST_PREPEND(PathSpec, spec, p->specs, s);
1213
1214 return 0;
1215 }
1216
1217 static int config_parse_path_unit(
1218 const char *filename,
1219 unsigned line,
1220 const char *section,
1221 const char *lvalue,
1222 const char *rvalue,
1223 void *data,
1224 void *userdata) {
1225
1226 Path *t = data;
1227 int r;
1228 DBusError error;
1229
1230 assert(filename);
1231 assert(lvalue);
1232 assert(rvalue);
1233 assert(data);
1234
1235 dbus_error_init(&error);
1236
1237 if (endswith(rvalue, ".path")) {
1238 log_error("[%s:%u] Unit cannot be of type path, ignoring: %s", filename, line, rvalue);
1239 return 0;
1240 }
1241
1242 if ((r = manager_load_unit(t->meta.manager, rvalue, NULL, &error, &t->unit)) < 0) {
1243 log_error("[%s:%u] Failed to load unit %s, ignoring: %s", filename, line, rvalue, bus_error(&error, r));
1244 dbus_error_free(&error);
1245 return 0;
1246 }
1247
1248 return 0;
1249 }
1250
1251 static int config_parse_socket_service(
1252 const char *filename,
1253 unsigned line,
1254 const char *section,
1255 const char *lvalue,
1256 const char *rvalue,
1257 void *data,
1258 void *userdata) {
1259
1260 Socket *s = data;
1261 int r;
1262 DBusError error;
1263
1264 assert(filename);
1265 assert(lvalue);
1266 assert(rvalue);
1267 assert(data);
1268
1269 dbus_error_init(&error);
1270
1271 if (!endswith(rvalue, ".service")) {
1272 log_error("[%s:%u] Unit must be of type service, ignoring: %s", filename, line, rvalue);
1273 return 0;
1274 }
1275
1276 if ((r = manager_load_unit(s->meta.manager, rvalue, NULL, &error, (Unit**) &s->service)) < 0) {
1277 log_error("[%s:%u] Failed to load unit %s, ignoring: %s", filename, line, rvalue, bus_error(&error, r));
1278 dbus_error_free(&error);
1279 return 0;
1280 }
1281
1282 return 0;
1283 }
1284
1285 static int config_parse_service_sockets(
1286 const char *filename,
1287 unsigned line,
1288 const char *section,
1289 const char *lvalue,
1290 const char *rvalue,
1291 void *data,
1292 void *userdata) {
1293
1294 Service *s = data;
1295 int r;
1296 DBusError error;
1297 char *state, *w;
1298 size_t l;
1299
1300 assert(filename);
1301 assert(lvalue);
1302 assert(rvalue);
1303 assert(data);
1304
1305 dbus_error_init(&error);
1306
1307 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
1308 char *t;
1309 Unit *sock;
1310
1311 if (!(t = strndup(w, l)))
1312 return -ENOMEM;
1313
1314 if (!endswith(t, ".socket")) {
1315 log_error("[%s:%u] Unit must be of type socket, ignoring: %s", filename, line, rvalue);
1316 free(t);
1317 continue;
1318 }
1319
1320 r = manager_load_unit(s->meta.manager, t, NULL, &error, &sock);
1321 free(t);
1322
1323 if (r < 0) {
1324 log_error("[%s:%u] Failed to load unit %s, ignoring: %s", filename, line, rvalue, bus_error(&error, r));
1325 dbus_error_free(&error);
1326 continue;
1327 }
1328
1329 if ((r = set_ensure_allocated(&s->configured_sockets, trivial_hash_func, trivial_compare_func)) < 0)
1330 return r;
1331
1332 if ((r = set_put(s->configured_sockets, sock)) < 0)
1333 return r;
1334 }
1335
1336 return 0;
1337 }
1338
1339 static int config_parse_env_file(
1340 const char *filename,
1341 unsigned line,
1342 const char *section,
1343 const char *lvalue,
1344 const char *rvalue,
1345 void *data,
1346 void *userdata) {
1347
1348 FILE *f;
1349 int r;
1350 char ***env = data;
1351 bool ignore = false;
1352
1353 assert(filename);
1354 assert(lvalue);
1355 assert(rvalue);
1356 assert(data);
1357
1358 if (rvalue[0] == '-') {
1359 ignore = true;
1360 rvalue++;
1361 }
1362
1363 if (!path_is_absolute(rvalue)) {
1364 log_error("[%s:%u] Path '%s' is not absolute, ignoring.", filename, line, rvalue);
1365 return 0;
1366 }
1367
1368 if (!(f = fopen(rvalue, "re"))) {
1369 if (!ignore)
1370 log_error("[%s:%u] Failed to open environment file '%s', ignoring: %m", filename, line, rvalue);
1371 return 0;
1372 }
1373
1374 while (!feof(f)) {
1375 char l[LINE_MAX], *p, *u;
1376 char **t;
1377
1378 if (!fgets(l, sizeof(l), f)) {
1379 if (feof(f))
1380 break;
1381
1382 r = -errno;
1383 log_error("[%s:%u] Failed to read environment file '%s', ignoring: %m", filename, line, rvalue);
1384 r = 0;
1385 goto finish;
1386 }
1387
1388 p = strstrip(l);
1389
1390 if (!*p)
1391 continue;
1392
1393 if (strchr(COMMENTS, *p))
1394 continue;
1395
1396 if (!(u = normalize_env_assignment(p))) {
1397 log_error("Out of memory");
1398 r = -ENOMEM;
1399 goto finish;
1400 }
1401
1402 t = strv_append(*env, u);
1403 free(u);
1404
1405 if (!t) {
1406 log_error("Out of memory");
1407 r = -ENOMEM;
1408 goto finish;
1409 }
1410
1411 strv_free(*env);
1412 *env = t;
1413 }
1414
1415 r = 0;
1416
1417 finish:
1418 if (f)
1419 fclose(f);
1420
1421 return r;
1422 }
1423
1424 static int config_parse_ip_tos(
1425 const char *filename,
1426 unsigned line,
1427 const char *section,
1428 const char *lvalue,
1429 const char *rvalue,
1430 void *data,
1431 void *userdata) {
1432
1433 int *ip_tos = data, x;
1434 int r;
1435
1436 assert(filename);
1437 assert(lvalue);
1438 assert(rvalue);
1439 assert(data);
1440
1441 if ((x = ip_tos_from_string(rvalue)) < 0)
1442 if ((r = safe_atoi(rvalue, &x)) < 0) {
1443 log_error("[%s:%u] Failed to parse IP TOS value, ignoring: %s", filename, line, rvalue);
1444 return 0;
1445 }
1446
1447 *ip_tos = x;
1448 return 0;
1449 }
1450
1451 static int config_parse_condition_path(
1452 const char *filename,
1453 unsigned line,
1454 const char *section,
1455 const char *lvalue,
1456 const char *rvalue,
1457 void *data,
1458 void *userdata) {
1459
1460 Unit *u = data;
1461 bool negate;
1462 Condition *c;
1463
1464 assert(filename);
1465 assert(lvalue);
1466 assert(rvalue);
1467 assert(data);
1468
1469 if ((negate = rvalue[0] == '!'))
1470 rvalue++;
1471
1472 if (!path_is_absolute(rvalue)) {
1473 log_error("[%s:%u] Path in condition not absolute, ignoring: %s", filename, line, rvalue);
1474 return 0;
1475 }
1476
1477 if (!(c = condition_new(streq(lvalue, "ConditionPathExists") ? CONDITION_PATH_EXISTS : CONDITION_DIRECTORY_NOT_EMPTY,
1478 rvalue, negate)))
1479 return -ENOMEM;
1480
1481 LIST_PREPEND(Condition, conditions, u->meta.conditions, c);
1482 return 0;
1483 }
1484
1485 static int config_parse_condition_kernel(
1486 const char *filename,
1487 unsigned line,
1488 const char *section,
1489 const char *lvalue,
1490 const char *rvalue,
1491 void *data,
1492 void *userdata) {
1493
1494 Unit *u = data;
1495 bool negate;
1496 Condition *c;
1497
1498 assert(filename);
1499 assert(lvalue);
1500 assert(rvalue);
1501 assert(data);
1502
1503 if ((negate = rvalue[0] == '!'))
1504 rvalue++;
1505
1506 if (!(c = condition_new(CONDITION_KERNEL_COMMAND_LINE, rvalue, negate)))
1507 return -ENOMEM;
1508
1509 LIST_PREPEND(Condition, conditions, u->meta.conditions, c);
1510 return 0;
1511 }
1512
1513 static int config_parse_condition_null(
1514 const char *filename,
1515 unsigned line,
1516 const char *section,
1517 const char *lvalue,
1518 const char *rvalue,
1519 void *data,
1520 void *userdata) {
1521
1522 Unit *u = data;
1523 Condition *c;
1524 bool negate;
1525 int b;
1526
1527 assert(filename);
1528 assert(lvalue);
1529 assert(rvalue);
1530 assert(data);
1531
1532 if ((negate = rvalue[0] == '!'))
1533 rvalue++;
1534
1535 if ((b = parse_boolean(rvalue)) < 0) {
1536 log_error("[%s:%u] Failed to parse boolean value in condition, ignoring: %s", filename, line, rvalue);
1537 return 0;
1538 }
1539
1540 if (!b)
1541 negate = !negate;
1542
1543 if (!(c = condition_new(CONDITION_NULL, NULL, negate)))
1544 return -ENOMEM;
1545
1546 LIST_PREPEND(Condition, conditions, u->meta.conditions, c);
1547 return 0;
1548 }
1549
1550 static DEFINE_CONFIG_PARSE_ENUM(config_parse_notify_access, notify_access, NotifyAccess, "Failed to parse notify access specifier");
1551
1552 #define FOLLOW_MAX 8
1553
1554 static int open_follow(char **filename, FILE **_f, Set *names, char **_final) {
1555 unsigned c = 0;
1556 int fd, r;
1557 FILE *f;
1558 char *id = NULL;
1559
1560 assert(filename);
1561 assert(*filename);
1562 assert(_f);
1563 assert(names);
1564
1565 /* This will update the filename pointer if the loaded file is
1566 * reached by a symlink. The old string will be freed. */
1567
1568 for (;;) {
1569 char *target, *name;
1570
1571 if (c++ >= FOLLOW_MAX)
1572 return -ELOOP;
1573
1574 path_kill_slashes(*filename);
1575
1576 /* Add the file name we are currently looking at to
1577 * the names of this unit, but only if it is a valid
1578 * unit name. */
1579 name = file_name_from_path(*filename);
1580
1581 if (unit_name_is_valid(name, false)) {
1582 if (!(id = set_get(names, name))) {
1583
1584 if (!(id = strdup(name)))
1585 return -ENOMEM;
1586
1587 if ((r = set_put(names, id)) < 0) {
1588 free(id);
1589 return r;
1590 }
1591 }
1592 }
1593
1594 /* Try to open the file name, but don't if its a symlink */
1595 if ((fd = open(*filename, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW)) >= 0)
1596 break;
1597
1598 if (errno != ELOOP)
1599 return -errno;
1600
1601 /* Hmm, so this is a symlink. Let's read the name, and follow it manually */
1602 if ((r = readlink_and_make_absolute(*filename, &target)) < 0)
1603 return r;
1604
1605 free(*filename);
1606 *filename = target;
1607 }
1608
1609 if (!(f = fdopen(fd, "re"))) {
1610 r = -errno;
1611 close_nointr_nofail(fd);
1612 return r;
1613 }
1614
1615 *_f = f;
1616 *_final = id;
1617 return 0;
1618 }
1619
1620 static int merge_by_names(Unit **u, Set *names, const char *id) {
1621 char *k;
1622 int r;
1623
1624 assert(u);
1625 assert(*u);
1626 assert(names);
1627
1628 /* Let's try to add in all symlink names we found */
1629 while ((k = set_steal_first(names))) {
1630
1631 /* First try to merge in the other name into our
1632 * unit */
1633 if ((r = unit_merge_by_name(*u, k)) < 0) {
1634 Unit *other;
1635
1636 /* Hmm, we couldn't merge the other unit into
1637 * ours? Then let's try it the other way
1638 * round */
1639
1640 other = manager_get_unit((*u)->meta.manager, k);
1641 free(k);
1642
1643 if (other)
1644 if ((r = unit_merge(other, *u)) >= 0) {
1645 *u = other;
1646 return merge_by_names(u, names, NULL);
1647 }
1648
1649 return r;
1650 }
1651
1652 if (id == k)
1653 unit_choose_id(*u, id);
1654
1655 free(k);
1656 }
1657
1658 return 0;
1659 }
1660
1661 static void dump_items(FILE *f, const ConfigItem *items) {
1662 const ConfigItem *i;
1663 const char *prev_section = NULL;
1664 bool not_first = false;
1665
1666 struct {
1667 ConfigParserCallback callback;
1668 const char *rvalue;
1669 } table[] = {
1670 { config_parse_int, "INTEGER" },
1671 { config_parse_unsigned, "UNSIGNED" },
1672 { config_parse_size, "SIZE" },
1673 { config_parse_bool, "BOOLEAN" },
1674 { config_parse_string, "STRING" },
1675 { config_parse_path, "PATH" },
1676 { config_parse_strv, "STRING [...]" },
1677 { config_parse_nice, "NICE" },
1678 { config_parse_oom_score_adjust, "OOMSCOREADJUST" },
1679 { config_parse_io_class, "IOCLASS" },
1680 { config_parse_io_priority, "IOPRIORITY" },
1681 { config_parse_cpu_sched_policy, "CPUSCHEDPOLICY" },
1682 { config_parse_cpu_sched_prio, "CPUSCHEDPRIO" },
1683 { config_parse_cpu_affinity, "CPUAFFINITY" },
1684 { config_parse_mode, "MODE" },
1685 { config_parse_env_file, "FILE" },
1686 { config_parse_output, "OUTPUT" },
1687 { config_parse_input, "INPUT" },
1688 { config_parse_facility, "FACILITY" },
1689 { config_parse_level, "LEVEL" },
1690 { config_parse_capabilities, "CAPABILITIES" },
1691 { config_parse_secure_bits, "SECUREBITS" },
1692 { config_parse_bounding_set, "BOUNDINGSET" },
1693 { config_parse_timer_slack_nsec, "TIMERSLACK" },
1694 { config_parse_limit, "LIMIT" },
1695 { config_parse_cgroup, "CGROUP [...]" },
1696 { config_parse_deps, "UNIT [...]" },
1697 { config_parse_names, "UNIT [...]" },
1698 { config_parse_exec, "PATH [ARGUMENT [...]]" },
1699 { config_parse_service_type, "SERVICETYPE" },
1700 { config_parse_service_restart, "SERVICERESTART" },
1701 #ifdef HAVE_SYSV_COMPAT
1702 { config_parse_sysv_priority, "SYSVPRIORITY" },
1703 #else
1704 { config_parse_warn_compat, "NOTSUPPORTED" },
1705 #endif
1706 { config_parse_kill_mode, "KILLMODE" },
1707 { config_parse_kill_signal, "SIGNAL" },
1708 { config_parse_listen, "SOCKET [...]" },
1709 { config_parse_socket_bind, "SOCKETBIND" },
1710 { config_parse_bindtodevice, "NETWORKINTERFACE" },
1711 { config_parse_usec, "SECONDS" },
1712 { config_parse_path_strv, "PATH [...]" },
1713 { config_parse_mount_flags, "MOUNTFLAG [...]" },
1714 { config_parse_string_printf, "STRING" },
1715 { config_parse_timer, "TIMER" },
1716 { config_parse_timer_unit, "NAME" },
1717 { config_parse_path_spec, "PATH" },
1718 { config_parse_path_unit, "UNIT" },
1719 { config_parse_notify_access, "ACCESS" },
1720 { config_parse_ip_tos, "TOS" },
1721 { config_parse_condition_path, "CONDITION" },
1722 { config_parse_condition_kernel, "CONDITION" },
1723 { config_parse_condition_null, "CONDITION" },
1724 };
1725
1726 assert(f);
1727 assert(items);
1728
1729 for (i = items; i->lvalue; i++) {
1730 unsigned j;
1731 const char *rvalue = "OTHER";
1732
1733 if (!streq_ptr(i->section, prev_section)) {
1734 if (!not_first)
1735 not_first = true;
1736 else
1737 fputc('\n', f);
1738
1739 fprintf(f, "[%s]\n", i->section);
1740 prev_section = i->section;
1741 }
1742
1743 for (j = 0; j < ELEMENTSOF(table); j++)
1744 if (i->parse == table[j].callback) {
1745 rvalue = table[j].rvalue;
1746 break;
1747 }
1748
1749 fprintf(f, "%s=%s\n", i->lvalue, rvalue);
1750 }
1751 }
1752
1753 static int load_from_path(Unit *u, const char *path) {
1754
1755 static const char* const section_table[_UNIT_TYPE_MAX] = {
1756 [UNIT_SERVICE] = "Service",
1757 [UNIT_TIMER] = "Timer",
1758 [UNIT_SOCKET] = "Socket",
1759 [UNIT_TARGET] = "Target",
1760 [UNIT_DEVICE] = "Device",
1761 [UNIT_MOUNT] = "Mount",
1762 [UNIT_AUTOMOUNT] = "Automount",
1763 [UNIT_SNAPSHOT] = "Snapshot",
1764 [UNIT_SWAP] = "Swap",
1765 [UNIT_PATH] = "Path"
1766 };
1767
1768 #define EXEC_CONTEXT_CONFIG_ITEMS(context, section) \
1769 { "WorkingDirectory", config_parse_path, &(context).working_directory, section }, \
1770 { "RootDirectory", config_parse_path, &(context).root_directory, section }, \
1771 { "User", config_parse_string_printf, &(context).user, section }, \
1772 { "Group", config_parse_string_printf, &(context).group, section }, \
1773 { "SupplementaryGroups", config_parse_strv, &(context).supplementary_groups, section }, \
1774 { "Nice", config_parse_nice, &(context), section }, \
1775 { "OOMScoreAdjust", config_parse_oom_score_adjust,&(context), section }, \
1776 { "IOSchedulingClass", config_parse_io_class, &(context), section }, \
1777 { "IOSchedulingPriority", config_parse_io_priority, &(context), section }, \
1778 { "CPUSchedulingPolicy", config_parse_cpu_sched_policy,&(context), section }, \
1779 { "CPUSchedulingPriority", config_parse_cpu_sched_prio, &(context), section }, \
1780 { "CPUSchedulingResetOnFork", config_parse_bool, &(context).cpu_sched_reset_on_fork, section }, \
1781 { "CPUAffinity", config_parse_cpu_affinity, &(context), section }, \
1782 { "UMask", config_parse_mode, &(context).umask, section }, \
1783 { "Environment", config_parse_strv, &(context).environment, section }, \
1784 { "EnvironmentFile", config_parse_env_file, &(context).environment, section }, \
1785 { "StandardInput", config_parse_input, &(context).std_input, section }, \
1786 { "StandardOutput", config_parse_output, &(context).std_output, section }, \
1787 { "StandardError", config_parse_output, &(context).std_error, section }, \
1788 { "TTYPath", config_parse_path, &(context).tty_path, section }, \
1789 { "SyslogIdentifier", config_parse_string_printf, &(context).syslog_identifier, section }, \
1790 { "SyslogFacility", config_parse_facility, &(context).syslog_priority, section }, \
1791 { "SyslogLevel", config_parse_level, &(context).syslog_priority, section }, \
1792 { "SyslogLevelPrefix", config_parse_bool, &(context).syslog_level_prefix, section }, \
1793 { "Capabilities", config_parse_capabilities, &(context), section }, \
1794 { "SecureBits", config_parse_secure_bits, &(context), section }, \
1795 { "CapabilityBoundingSetDrop", config_parse_bounding_set, &(context), section }, \
1796 { "TimerSlackNSec", config_parse_timer_slack_nsec,&(context), section }, \
1797 { "LimitCPU", config_parse_limit, &(context).rlimit[RLIMIT_CPU], section }, \
1798 { "LimitFSIZE", config_parse_limit, &(context).rlimit[RLIMIT_FSIZE], section }, \
1799 { "LimitDATA", config_parse_limit, &(context).rlimit[RLIMIT_DATA], section }, \
1800 { "LimitSTACK", config_parse_limit, &(context).rlimit[RLIMIT_STACK], section }, \
1801 { "LimitCORE", config_parse_limit, &(context).rlimit[RLIMIT_CORE], section }, \
1802 { "LimitRSS", config_parse_limit, &(context).rlimit[RLIMIT_RSS], section }, \
1803 { "LimitNOFILE", config_parse_limit, &(context).rlimit[RLIMIT_NOFILE], section }, \
1804 { "LimitAS", config_parse_limit, &(context).rlimit[RLIMIT_AS], section }, \
1805 { "LimitNPROC", config_parse_limit, &(context).rlimit[RLIMIT_NPROC], section }, \
1806 { "LimitMEMLOCK", config_parse_limit, &(context).rlimit[RLIMIT_MEMLOCK], section }, \
1807 { "LimitLOCKS", config_parse_limit, &(context).rlimit[RLIMIT_LOCKS], section }, \
1808 { "LimitSIGPENDING", config_parse_limit, &(context).rlimit[RLIMIT_SIGPENDING], section }, \
1809 { "LimitMSGQUEUE", config_parse_limit, &(context).rlimit[RLIMIT_MSGQUEUE], section }, \
1810 { "LimitNICE", config_parse_limit, &(context).rlimit[RLIMIT_NICE], section }, \
1811 { "LimitRTPRIO", config_parse_limit, &(context).rlimit[RLIMIT_RTPRIO], section }, \
1812 { "LimitRTTIME", config_parse_limit, &(context).rlimit[RLIMIT_RTTIME], section }, \
1813 { "ControlGroup", config_parse_cgroup, u, section }, \
1814 { "ReadWriteDirectories", config_parse_path_strv, &(context).read_write_dirs, section }, \
1815 { "ReadOnlyDirectories", config_parse_path_strv, &(context).read_only_dirs, section }, \
1816 { "InaccessibleDirectories",config_parse_path_strv, &(context).inaccessible_dirs, section }, \
1817 { "PrivateTmp", config_parse_bool, &(context).private_tmp, section }, \
1818 { "MountFlags", config_parse_mount_flags, &(context), section }, \
1819 { "TCPWrapName", config_parse_string_printf, &(context).tcpwrap_name, section }, \
1820 { "PAMName", config_parse_string_printf, &(context).pam_name, section }, \
1821 { "KillMode", config_parse_kill_mode, &(context).kill_mode, section }, \
1822 { "KillSignal", config_parse_kill_signal, &(context).kill_signal, section }, \
1823 { "UtmpIdentifier", config_parse_string_printf, &(context).utmp_id, section }
1824
1825 const ConfigItem items[] = {
1826 { "Names", config_parse_names, u, "Unit" },
1827 { "Description", config_parse_string_printf, &u->meta.description, "Unit" },
1828 { "Requires", config_parse_deps, UINT_TO_PTR(UNIT_REQUIRES), "Unit" },
1829 { "RequiresOverridable", config_parse_deps, UINT_TO_PTR(UNIT_REQUIRES_OVERRIDABLE), "Unit" },
1830 { "Requisite", config_parse_deps, UINT_TO_PTR(UNIT_REQUISITE), "Unit" },
1831 { "RequisiteOverridable", config_parse_deps, UINT_TO_PTR(UNIT_REQUISITE_OVERRIDABLE), "Unit" },
1832 { "Wants", config_parse_deps, UINT_TO_PTR(UNIT_WANTS), "Unit" },
1833 { "BindTo", config_parse_deps, UINT_TO_PTR(UNIT_BIND_TO), "Unit" },
1834 { "Conflicts", config_parse_deps, UINT_TO_PTR(UNIT_CONFLICTS), "Unit" },
1835 { "Before", config_parse_deps, UINT_TO_PTR(UNIT_BEFORE), "Unit" },
1836 { "After", config_parse_deps, UINT_TO_PTR(UNIT_AFTER), "Unit" },
1837 { "OnFailure", config_parse_deps, UINT_TO_PTR(UNIT_ON_FAILURE), "Unit" },
1838 { "StopWhenUnneeded", config_parse_bool, &u->meta.stop_when_unneeded, "Unit" },
1839 { "RefuseManualStart", config_parse_bool, &u->meta.refuse_manual_start, "Unit" },
1840 { "RefuseManualStop", config_parse_bool, &u->meta.refuse_manual_stop, "Unit" },
1841 { "AllowIsolate", config_parse_bool, &u->meta.allow_isolate, "Unit" },
1842 { "DefaultDependencies", config_parse_bool, &u->meta.default_dependencies, "Unit" },
1843 { "JobTimeoutSec", config_parse_usec, &u->meta.job_timeout, "Unit" },
1844 { "ConditionPathExists", config_parse_condition_path, u, "Unit" },
1845 { "ConditionDirectoryNotEmpty", config_parse_condition_path, u, "Unit" },
1846 { "ConditionKernelCommandLine", config_parse_condition_kernel, u, "Unit" },
1847 { "ConditionNull", config_parse_condition_null, u, "Unit" },
1848
1849 { "PIDFile", config_parse_path, &u->service.pid_file, "Service" },
1850 { "ExecStartPre", config_parse_exec, u->service.exec_command+SERVICE_EXEC_START_PRE, "Service" },
1851 { "ExecStart", config_parse_exec, u->service.exec_command+SERVICE_EXEC_START, "Service" },
1852 { "ExecStartPost", config_parse_exec, u->service.exec_command+SERVICE_EXEC_START_POST, "Service" },
1853 { "ExecReload", config_parse_exec, u->service.exec_command+SERVICE_EXEC_RELOAD, "Service" },
1854 { "ExecStop", config_parse_exec, u->service.exec_command+SERVICE_EXEC_STOP, "Service" },
1855 { "ExecStopPost", config_parse_exec, u->service.exec_command+SERVICE_EXEC_STOP_POST, "Service" },
1856 { "RestartSec", config_parse_usec, &u->service.restart_usec, "Service" },
1857 { "TimeoutSec", config_parse_usec, &u->service.timeout_usec, "Service" },
1858 { "Type", config_parse_service_type, &u->service.type, "Service" },
1859 { "Restart", config_parse_service_restart, &u->service.restart, "Service" },
1860 { "PermissionsStartOnly", config_parse_bool, &u->service.permissions_start_only, "Service" },
1861 { "RootDirectoryStartOnly", config_parse_bool, &u->service.root_directory_start_only, "Service" },
1862 { "RemainAfterExit", config_parse_bool, &u->service.remain_after_exit, "Service" },
1863 #ifdef HAVE_SYSV_COMPAT
1864 { "SysVStartPriority", config_parse_sysv_priority, &u->service.sysv_start_priority, "Service" },
1865 #else
1866 { "SysVStartPriority", config_parse_warn_compat, NULL, "Service" },
1867 #endif
1868 { "NonBlocking", config_parse_bool, &u->service.exec_context.non_blocking, "Service" },
1869 { "BusName", config_parse_string_printf, &u->service.bus_name, "Service" },
1870 { "NotifyAccess", config_parse_notify_access, &u->service.notify_access, "Service" },
1871 { "Sockets", config_parse_service_sockets, &u->service, "Service" },
1872 { "FsckPassNo", config_parse_fsck_passno, &u->service.fsck_passno, "Service" },
1873 EXEC_CONTEXT_CONFIG_ITEMS(u->service.exec_context, "Service"),
1874
1875 { "ListenStream", config_parse_listen, &u->socket, "Socket" },
1876 { "ListenDatagram", config_parse_listen, &u->socket, "Socket" },
1877 { "ListenSequentialPacket", config_parse_listen, &u->socket, "Socket" },
1878 { "ListenFIFO", config_parse_listen, &u->socket, "Socket" },
1879 { "BindIPv6Only", config_parse_socket_bind, &u->socket, "Socket" },
1880 { "Backlog", config_parse_unsigned, &u->socket.backlog, "Socket" },
1881 { "BindToDevice", config_parse_bindtodevice, &u->socket, "Socket" },
1882 { "ExecStartPre", config_parse_exec, u->socket.exec_command+SOCKET_EXEC_START_PRE, "Socket" },
1883 { "ExecStartPost", config_parse_exec, u->socket.exec_command+SOCKET_EXEC_START_POST, "Socket" },
1884 { "ExecStopPre", config_parse_exec, u->socket.exec_command+SOCKET_EXEC_STOP_PRE, "Socket" },
1885 { "ExecStopPost", config_parse_exec, u->socket.exec_command+SOCKET_EXEC_STOP_POST, "Socket" },
1886 { "TimeoutSec", config_parse_usec, &u->socket.timeout_usec, "Socket" },
1887 { "DirectoryMode", config_parse_mode, &u->socket.directory_mode, "Socket" },
1888 { "SocketMode", config_parse_mode, &u->socket.socket_mode, "Socket" },
1889 { "Accept", config_parse_bool, &u->socket.accept, "Socket" },
1890 { "MaxConnections", config_parse_unsigned, &u->socket.max_connections, "Socket" },
1891 { "KeepAlive", config_parse_bool, &u->socket.keep_alive, "Socket" },
1892 { "Priority", config_parse_int, &u->socket.priority, "Socket" },
1893 { "ReceiveBuffer", config_parse_size, &u->socket.receive_buffer, "Socket" },
1894 { "SendBuffer", config_parse_size, &u->socket.send_buffer, "Socket" },
1895 { "IPTOS", config_parse_ip_tos, &u->socket.ip_tos, "Socket" },
1896 { "IPTTL", config_parse_int, &u->socket.ip_ttl, "Socket" },
1897 { "Mark", config_parse_int, &u->socket.mark, "Socket" },
1898 { "PipeSize", config_parse_size, &u->socket.pipe_size, "Socket" },
1899 { "FreeBind", config_parse_bool, &u->socket.free_bind, "Socket" },
1900 { "TCPCongestion", config_parse_string, &u->socket.tcp_congestion, "Socket" },
1901 { "Service", config_parse_socket_service, &u->socket, "Socket" },
1902 EXEC_CONTEXT_CONFIG_ITEMS(u->socket.exec_context, "Socket"),
1903
1904 { "What", config_parse_string, &u->mount.parameters_fragment.what, "Mount" },
1905 { "Where", config_parse_path, &u->mount.where, "Mount" },
1906 { "Options", config_parse_string, &u->mount.parameters_fragment.options, "Mount" },
1907 { "Type", config_parse_string, &u->mount.parameters_fragment.fstype, "Mount" },
1908 { "TimeoutSec", config_parse_usec, &u->mount.timeout_usec, "Mount" },
1909 { "DirectoryMode", config_parse_mode, &u->mount.directory_mode, "Mount" },
1910 EXEC_CONTEXT_CONFIG_ITEMS(u->mount.exec_context, "Mount"),
1911
1912 { "Where", config_parse_path, &u->automount.where, "Automount" },
1913 { "DirectoryMode", config_parse_mode, &u->automount.directory_mode, "Automount" },
1914
1915 { "What", config_parse_path, &u->swap.parameters_fragment.what, "Swap" },
1916 { "Priority", config_parse_int, &u->swap.parameters_fragment.priority, "Swap" },
1917 { "TimeoutSec", config_parse_usec, &u->swap.timeout_usec, "Swap" },
1918 EXEC_CONTEXT_CONFIG_ITEMS(u->swap.exec_context, "Swap"),
1919
1920 { "OnActiveSec", config_parse_timer, &u->timer, "Timer" },
1921 { "OnBootSec", config_parse_timer, &u->timer, "Timer" },
1922 { "OnStartupSec", config_parse_timer, &u->timer, "Timer" },
1923 { "OnUnitActiveSec", config_parse_timer, &u->timer, "Timer" },
1924 { "OnUnitInactiveSec", config_parse_timer, &u->timer, "Timer" },
1925 { "Unit", config_parse_timer_unit, &u->timer, "Timer" },
1926
1927 { "PathExists", config_parse_path_spec, &u->path, "Path" },
1928 { "PathChanged", config_parse_path_spec, &u->path, "Path" },
1929 { "DirectoryNotEmpty", config_parse_path_spec, &u->path, "Path" },
1930 { "Unit", config_parse_path_unit, &u->path, "Path" },
1931
1932 /* The [Install] section is ignored here. */
1933 { "Alias", NULL, NULL, "Install" },
1934 { "WantedBy", NULL, NULL, "Install" },
1935 { "Also", NULL, NULL, "Install" },
1936
1937 { NULL, NULL, NULL, NULL }
1938 };
1939
1940 #undef EXEC_CONTEXT_CONFIG_ITEMS
1941
1942 const char *sections[4];
1943 int r;
1944 Set *symlink_names;
1945 FILE *f = NULL;
1946 char *filename = NULL, *id = NULL;
1947 Unit *merged;
1948 struct stat st;
1949
1950 if (!u) {
1951 /* Dirty dirty hack. */
1952 dump_items((FILE*) path, items);
1953 return 0;
1954 }
1955
1956 assert(u);
1957 assert(path);
1958
1959 sections[0] = "Unit";
1960 sections[1] = section_table[u->meta.type];
1961 sections[2] = "Install";
1962 sections[3] = NULL;
1963
1964 if (!(symlink_names = set_new(string_hash_func, string_compare_func)))
1965 return -ENOMEM;
1966
1967 if (path_is_absolute(path)) {
1968
1969 if (!(filename = strdup(path))) {
1970 r = -ENOMEM;
1971 goto finish;
1972 }
1973
1974 if ((r = open_follow(&filename, &f, symlink_names, &id)) < 0) {
1975 free(filename);
1976 filename = NULL;
1977
1978 if (r != -ENOENT)
1979 goto finish;
1980 }
1981
1982 } else {
1983 char **p;
1984
1985 STRV_FOREACH(p, u->meta.manager->lookup_paths.unit_path) {
1986
1987 /* Instead of opening the path right away, we manually
1988 * follow all symlinks and add their name to our unit
1989 * name set while doing so */
1990 if (!(filename = path_make_absolute(path, *p))) {
1991 r = -ENOMEM;
1992 goto finish;
1993 }
1994
1995 if (u->meta.manager->unit_path_cache &&
1996 !set_get(u->meta.manager->unit_path_cache, filename))
1997 r = -ENOENT;
1998 else
1999 r = open_follow(&filename, &f, symlink_names, &id);
2000
2001 if (r < 0) {
2002 char *sn;
2003
2004 free(filename);
2005 filename = NULL;
2006
2007 if (r != -ENOENT)
2008 goto finish;
2009
2010 /* Empty the symlink names for the next run */
2011 while ((sn = set_steal_first(symlink_names)))
2012 free(sn);
2013
2014 continue;
2015 }
2016
2017 break;
2018 }
2019 }
2020
2021 if (!filename) {
2022 /* Hmm, no suitable file found? */
2023 r = 0;
2024 goto finish;
2025 }
2026
2027 merged = u;
2028 if ((r = merge_by_names(&merged, symlink_names, id)) < 0)
2029 goto finish;
2030
2031 if (merged != u) {
2032 u->meta.load_state = UNIT_MERGED;
2033 r = 0;
2034 goto finish;
2035 }
2036
2037 zero(st);
2038 if (fstat(fileno(f), &st) < 0) {
2039 r = -errno;
2040 goto finish;
2041 }
2042
2043 if (null_or_empty(&st))
2044 u->meta.load_state = UNIT_MASKED;
2045 else {
2046 /* Now, parse the file contents */
2047 if ((r = config_parse(filename, f, sections, items, false, u)) < 0)
2048 goto finish;
2049
2050 u->meta.load_state = UNIT_LOADED;
2051 }
2052
2053 free(u->meta.fragment_path);
2054 u->meta.fragment_path = filename;
2055 filename = NULL;
2056
2057 u->meta.fragment_mtime = timespec_load(&st.st_mtim);
2058
2059 r = 0;
2060
2061 finish:
2062 set_free_free(symlink_names);
2063 free(filename);
2064
2065 if (f)
2066 fclose(f);
2067
2068 return r;
2069 }
2070
2071 int unit_load_fragment(Unit *u) {
2072 int r;
2073 Iterator i;
2074 const char *t;
2075
2076 assert(u);
2077 assert(u->meta.load_state == UNIT_STUB);
2078 assert(u->meta.id);
2079
2080 /* First, try to find the unit under its id. We always look
2081 * for unit files in the default directories, to make it easy
2082 * to override things by placing things in /etc/systemd/system */
2083 if ((r = load_from_path(u, u->meta.id)) < 0)
2084 return r;
2085
2086 /* Try to find an alias we can load this with */
2087 if (u->meta.load_state == UNIT_STUB)
2088 SET_FOREACH(t, u->meta.names, i) {
2089
2090 if (t == u->meta.id)
2091 continue;
2092
2093 if ((r = load_from_path(u, t)) < 0)
2094 return r;
2095
2096 if (u->meta.load_state != UNIT_STUB)
2097 break;
2098 }
2099
2100 /* And now, try looking for it under the suggested (originally linked) path */
2101 if (u->meta.load_state == UNIT_STUB && u->meta.fragment_path) {
2102
2103 if ((r = load_from_path(u, u->meta.fragment_path)) < 0)
2104 return r;
2105
2106 if (u->meta.load_state == UNIT_STUB) {
2107 /* Hmm, this didn't work? Then let's get rid
2108 * of the fragment path stored for us, so that
2109 * we don't point to an invalid location. */
2110 free(u->meta.fragment_path);
2111 u->meta.fragment_path = NULL;
2112 }
2113 }
2114
2115 /* Look for a template */
2116 if (u->meta.load_state == UNIT_STUB && u->meta.instance) {
2117 char *k;
2118
2119 if (!(k = unit_name_template(u->meta.id)))
2120 return -ENOMEM;
2121
2122 r = load_from_path(u, k);
2123 free(k);
2124
2125 if (r < 0)
2126 return r;
2127
2128 if (u->meta.load_state == UNIT_STUB)
2129 SET_FOREACH(t, u->meta.names, i) {
2130
2131 if (t == u->meta.id)
2132 continue;
2133
2134 if (!(k = unit_name_template(t)))
2135 return -ENOMEM;
2136
2137 r = load_from_path(u, k);
2138 free(k);
2139
2140 if (r < 0)
2141 return r;
2142
2143 if (u->meta.load_state != UNIT_STUB)
2144 break;
2145 }
2146 }
2147
2148 return 0;
2149 }
2150
2151 void unit_dump_config_items(FILE *f) {
2152 /* OK, this wins a prize for extreme ugliness. */
2153
2154 load_from_path(NULL, (const void*) f);
2155 }
Unnamed repository; edit this file 'description' to name the repository.