1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
2
3 #include <errno.h>
4 #include <stdio.h>
5 #include <stdlib.h>
6
7 #include "alloc-util.h"
8 #include "fs-util.h"
9 #include "log.h"
10 #include "macro.h"
11 #include "nulstr-util.h"
12 #include "path-lookup.h"
13 #include "path-util.h"
14 #include "stat-util.h"
15 #include "string-util.h"
16 #include "strv.h"
17 #include "tmpfile-util.h"
18 #include "user-util.h"
19
xdg_user_runtime_dir(char ** ret,const char * suffix)20 int xdg_user_runtime_dir(char **ret, const char *suffix) {
21 const char *e;
22 char *j;
23
24 assert(ret);
25 assert(suffix);
26
27 e = getenv("XDG_RUNTIME_DIR");
28 if (!e)
29 return -ENXIO;
30
31 j = path_join(e, suffix);
32 if (!j)
33 return -ENOMEM;
34
35 *ret = j;
36 return 0;
37 }
38
xdg_user_config_dir(char ** ret,const char * suffix)39 int xdg_user_config_dir(char **ret, const char *suffix) {
40 _cleanup_free_ char *j = NULL;
41 const char *e;
42 int r;
43
44 assert(ret);
45
46 e = getenv("XDG_CONFIG_HOME");
47 if (e) {
48 j = path_join(e, suffix);
49 if (!j)
50 return -ENOMEM;
51 } else {
52 r = get_home_dir(&j);
53 if (r < 0)
54 return r;
55
56 if (!path_extend(&j, "/.config", suffix))
57 return -ENOMEM;
58 }
59
60 *ret = TAKE_PTR(j);
61 return 0;
62 }
63
xdg_user_data_dir(char ** ret,const char * suffix)64 int xdg_user_data_dir(char **ret, const char *suffix) {
65 _cleanup_free_ char *j = NULL;
66 const char *e;
67 int r;
68
69 assert(ret);
70 assert(suffix);
71
72 /* We don't treat /etc/xdg/systemd here as the spec
73 * suggests because we assume that is a link to
74 * /etc/systemd/ anyway. */
75
76 e = getenv("XDG_DATA_HOME");
77 if (e) {
78 j = path_join(e, suffix);
79 if (!j)
80 return -ENOMEM;
81 } else {
82 r = get_home_dir(&j);
83 if (r < 0)
84 return r;
85
86 if (!path_extend(&j, "/.local/share", suffix))
87 return -ENOMEM;
88 }
89
90 *ret = TAKE_PTR(j);
91 return 1;
92 }
93
94 static const char* const user_data_unit_paths[] = {
95 "/usr/local/lib/systemd/user",
96 "/usr/local/share/systemd/user",
97 USER_DATA_UNIT_DIR,
98 "/usr/lib/systemd/user",
99 "/usr/share/systemd/user",
100 NULL
101 };
102
103 static const char* const user_config_unit_paths[] = {
104 USER_CONFIG_UNIT_DIR,
105 "/etc/systemd/user",
106 NULL
107 };
108
xdg_user_dirs(char *** ret_config_dirs,char *** ret_data_dirs)109 int xdg_user_dirs(char ***ret_config_dirs, char ***ret_data_dirs) {
110 /* Implement the mechanisms defined in
111 *
112 * http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html
113 *
114 * We look in both the config and the data dirs because we
115 * want to encourage that distributors ship their unit files
116 * as data, and allow overriding as configuration.
117 */
118 const char *e;
119 _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL;
120
121 e = getenv("XDG_CONFIG_DIRS");
122 if (e)
123 config_dirs = strv_split(e, ":");
124 else
125 config_dirs = strv_new("/etc/xdg");
126 if (!config_dirs)
127 return -ENOMEM;
128
129 e = getenv("XDG_DATA_DIRS");
130 if (e)
131 data_dirs = strv_split(e, ":");
132 else
133 data_dirs = strv_new("/usr/local/share",
134 "/usr/share");
135 if (!data_dirs)
136 return -ENOMEM;
137
138 *ret_config_dirs = TAKE_PTR(config_dirs);
139 *ret_data_dirs = TAKE_PTR(data_dirs);
140
141 return 0;
142 }
143
user_dirs(const char * persistent_config,const char * runtime_config,const char * global_persistent_config,const char * global_runtime_config,const char * generator,const char * generator_early,const char * generator_late,const char * transient,const char * persistent_control,const char * runtime_control)144 static char** user_dirs(
145 const char *persistent_config,
146 const char *runtime_config,
147 const char *global_persistent_config,
148 const char *global_runtime_config,
149 const char *generator,
150 const char *generator_early,
151 const char *generator_late,
152 const char *transient,
153 const char *persistent_control,
154 const char *runtime_control) {
155
156 _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL;
157 _cleanup_free_ char *data_home = NULL;
158 _cleanup_strv_free_ char **res = NULL;
159 int r;
160
161 r = xdg_user_dirs(&config_dirs, &data_dirs);
162 if (r < 0)
163 return NULL;
164
165 r = xdg_user_data_dir(&data_home, "/systemd/user");
166 if (r < 0 && r != -ENXIO)
167 return NULL;
168
169 /* Now merge everything we found. */
170 if (strv_extend(&res, persistent_control) < 0)
171 return NULL;
172
173 if (strv_extend(&res, runtime_control) < 0)
174 return NULL;
175
176 if (strv_extend(&res, transient) < 0)
177 return NULL;
178
179 if (strv_extend(&res, generator_early) < 0)
180 return NULL;
181
182 if (strv_extend(&res, persistent_config) < 0)
183 return NULL;
184
185 if (strv_extend_strv_concat(&res, config_dirs, "/systemd/user") < 0)
186 return NULL;
187
188 /* global config has lower priority than the user config of the same type */
189 if (strv_extend(&res, global_persistent_config) < 0)
190 return NULL;
191
192 if (strv_extend_strv(&res, (char**) user_config_unit_paths, false) < 0)
193 return NULL;
194
195 if (strv_extend(&res, runtime_config) < 0)
196 return NULL;
197
198 if (strv_extend(&res, global_runtime_config) < 0)
199 return NULL;
200
201 if (strv_extend(&res, generator) < 0)
202 return NULL;
203
204 if (strv_extend(&res, data_home) < 0)
205 return NULL;
206
207 if (strv_extend_strv_concat(&res, data_dirs, "/systemd/user") < 0)
208 return NULL;
209
210 if (strv_extend_strv(&res, (char**) user_data_unit_paths, false) < 0)
211 return NULL;
212
213 if (strv_extend(&res, generator_late) < 0)
214 return NULL;
215
216 if (path_strv_make_absolute_cwd(res) < 0)
217 return NULL;
218
219 return TAKE_PTR(res);
220 }
221
path_is_user_data_dir(const char * path)222 bool path_is_user_data_dir(const char *path) {
223 assert(path);
224
225 return strv_contains((char**) user_data_unit_paths, path);
226 }
227
path_is_user_config_dir(const char * path)228 bool path_is_user_config_dir(const char *path) {
229 assert(path);
230
231 return strv_contains((char**) user_config_unit_paths, path);
232 }
233
acquire_generator_dirs(LookupScope scope,const char * tempdir,char ** generator,char ** generator_early,char ** generator_late)234 static int acquire_generator_dirs(
235 LookupScope scope,
236 const char *tempdir,
237 char **generator,
238 char **generator_early,
239 char **generator_late) {
240
241 _cleanup_free_ char *x = NULL, *y = NULL, *z = NULL, *p = NULL;
242 const char *prefix;
243
244 assert(generator);
245 assert(generator_early);
246 assert(generator_late);
247 assert(IN_SET(scope, LOOKUP_SCOPE_SYSTEM, LOOKUP_SCOPE_USER, LOOKUP_SCOPE_GLOBAL));
248
249 if (scope == LOOKUP_SCOPE_GLOBAL)
250 return -EOPNOTSUPP;
251
252 if (tempdir)
253 prefix = tempdir;
254 else if (scope == LOOKUP_SCOPE_SYSTEM)
255 prefix = "/run/systemd";
256 else {
257 /* LOOKUP_SCOPE_USER */
258 const char *e;
259
260 e = getenv("XDG_RUNTIME_DIR");
261 if (!e)
262 return -ENXIO;
263
264 p = path_join(e, "/systemd");
265 if (!p)
266 return -ENOMEM;
267
268 prefix = p;
269 }
270
271 x = path_join(prefix, "generator");
272 if (!x)
273 return -ENOMEM;
274
275 y = path_join(prefix, "generator.early");
276 if (!y)
277 return -ENOMEM;
278
279 z = path_join(prefix, "generator.late");
280 if (!z)
281 return -ENOMEM;
282
283 *generator = TAKE_PTR(x);
284 *generator_early = TAKE_PTR(y);
285 *generator_late = TAKE_PTR(z);
286
287 return 0;
288 }
289
acquire_transient_dir(LookupScope scope,const char * tempdir,char ** ret)290 static int acquire_transient_dir(
291 LookupScope scope,
292 const char *tempdir,
293 char **ret) {
294
295 char *transient;
296
297 assert(ret);
298 assert(IN_SET(scope, LOOKUP_SCOPE_SYSTEM, LOOKUP_SCOPE_USER, LOOKUP_SCOPE_GLOBAL));
299
300 if (scope == LOOKUP_SCOPE_GLOBAL)
301 return -EOPNOTSUPP;
302
303 if (tempdir)
304 transient = path_join(tempdir, "transient");
305 else if (scope == LOOKUP_SCOPE_SYSTEM)
306 transient = strdup("/run/systemd/transient");
307 else
308 return xdg_user_runtime_dir(ret, "/systemd/transient");
309
310 if (!transient)
311 return -ENOMEM;
312 *ret = transient;
313 return 0;
314 }
315
acquire_config_dirs(LookupScope scope,char ** persistent,char ** runtime)316 static int acquire_config_dirs(LookupScope scope, char **persistent, char **runtime) {
317 _cleanup_free_ char *a = NULL, *b = NULL;
318 int r;
319
320 assert(persistent);
321 assert(runtime);
322
323 switch (scope) {
324
325 case LOOKUP_SCOPE_SYSTEM:
326 a = strdup(SYSTEM_CONFIG_UNIT_DIR);
327 b = strdup("/run/systemd/system");
328 break;
329
330 case LOOKUP_SCOPE_GLOBAL:
331 a = strdup(USER_CONFIG_UNIT_DIR);
332 b = strdup("/run/systemd/user");
333 break;
334
335 case LOOKUP_SCOPE_USER:
336 r = xdg_user_config_dir(&a, "/systemd/user");
337 if (r < 0 && r != -ENXIO)
338 return r;
339
340 r = xdg_user_runtime_dir(runtime, "/systemd/user");
341 if (r < 0) {
342 if (r != -ENXIO)
343 return r;
344
345 /* If XDG_RUNTIME_DIR is not set, don't consider that fatal, simply initialize the runtime
346 * directory to NULL */
347 *runtime = NULL;
348 }
349
350 *persistent = TAKE_PTR(a);
351
352 return 0;
353
354 default:
355 assert_not_reached();
356 }
357
358 if (!a || !b)
359 return -ENOMEM;
360
361 *persistent = TAKE_PTR(a);
362 *runtime = TAKE_PTR(b);
363
364 return 0;
365 }
366
acquire_control_dirs(LookupScope scope,char ** persistent,char ** runtime)367 static int acquire_control_dirs(LookupScope scope, char **persistent, char **runtime) {
368 _cleanup_free_ char *a = NULL;
369 int r;
370
371 assert(persistent);
372 assert(runtime);
373
374 switch (scope) {
375
376 case LOOKUP_SCOPE_SYSTEM: {
377 _cleanup_free_ char *b = NULL;
378
379 a = strdup("/etc/systemd/system.control");
380 if (!a)
381 return -ENOMEM;
382
383 b = strdup("/run/systemd/system.control");
384 if (!b)
385 return -ENOMEM;
386
387 *runtime = TAKE_PTR(b);
388
389 break;
390 }
391
392 case LOOKUP_SCOPE_USER:
393 r = xdg_user_config_dir(&a, "/systemd/user.control");
394 if (r < 0 && r != -ENXIO)
395 return r;
396
397 r = xdg_user_runtime_dir(runtime, "/systemd/user.control");
398 if (r < 0) {
399 if (r != -ENXIO)
400 return r;
401
402 /* If XDG_RUNTIME_DIR is not set, don't consider this fatal, simply initialize the directory to
403 * NULL */
404 *runtime = NULL;
405 }
406
407 break;
408
409 case LOOKUP_SCOPE_GLOBAL:
410 return -EOPNOTSUPP;
411
412 default:
413 assert_not_reached();
414 }
415
416 *persistent = TAKE_PTR(a);
417
418 return 0;
419 }
420
acquire_attached_dirs(LookupScope scope,char ** ret_persistent,char ** ret_runtime)421 static int acquire_attached_dirs(
422 LookupScope scope,
423 char **ret_persistent,
424 char **ret_runtime) {
425
426 _cleanup_free_ char *a = NULL, *b = NULL;
427
428 assert(ret_persistent);
429 assert(ret_runtime);
430
431 /* Portable services are not available to regular users for now. */
432 if (scope != LOOKUP_SCOPE_SYSTEM)
433 return -EOPNOTSUPP;
434
435 a = strdup("/etc/systemd/system.attached");
436 if (!a)
437 return -ENOMEM;
438
439 b = strdup("/run/systemd/system.attached");
440 if (!b)
441 return -ENOMEM;
442
443 *ret_persistent = TAKE_PTR(a);
444 *ret_runtime = TAKE_PTR(b);
445
446 return 0;
447 }
448
patch_root_prefix(char ** p,const char * root_dir)449 static int patch_root_prefix(char **p, const char *root_dir) {
450 char *c;
451
452 assert(p);
453
454 if (!*p)
455 return 0;
456
457 c = path_join(root_dir, *p);
458 if (!c)
459 return -ENOMEM;
460
461 free_and_replace(*p, c);
462 return 0;
463 }
464
patch_root_prefix_strv(char ** l,const char * root_dir)465 static int patch_root_prefix_strv(char **l, const char *root_dir) {
466 int r;
467
468 if (!root_dir)
469 return 0;
470
471 STRV_FOREACH(i, l) {
472 r = patch_root_prefix(i, root_dir);
473 if (r < 0)
474 return r;
475 }
476
477 return 0;
478 }
479
get_paths_from_environ(const char * var,char *** paths,bool * append)480 static int get_paths_from_environ(const char *var, char ***paths, bool *append) {
481 const char *e;
482 int r;
483
484 assert(var);
485 assert(paths);
486 assert(append);
487
488 *append = false;
489
490 e = getenv(var);
491 if (e) {
492 const char *k;
493
494 k = endswith(e, ":");
495 if (k) {
496 e = strndupa_safe(e, k - e);
497 *append = true;
498 }
499
500 /* FIXME: empty components in other places should be rejected. */
501
502 r = path_split_and_make_absolute(e, paths);
503 if (r < 0)
504 return r;
505 }
506
507 return 0;
508 }
509
lookup_paths_init(LookupPaths * lp,LookupScope scope,LookupPathsFlags flags,const char * root_dir)510 int lookup_paths_init(
511 LookupPaths *lp,
512 LookupScope scope,
513 LookupPathsFlags flags,
514 const char *root_dir) {
515
516 _cleanup_(rmdir_and_freep) char *tempdir = NULL;
517 _cleanup_free_ char
518 *root = NULL,
519 *persistent_config = NULL, *runtime_config = NULL,
520 *global_persistent_config = NULL, *global_runtime_config = NULL,
521 *generator = NULL, *generator_early = NULL, *generator_late = NULL,
522 *transient = NULL,
523 *persistent_control = NULL, *runtime_control = NULL,
524 *persistent_attached = NULL, *runtime_attached = NULL;
525 bool append = false; /* Add items from SYSTEMD_UNIT_PATH before normal directories */
526 _cleanup_strv_free_ char **paths = NULL;
527 int r;
528
529 assert(lp);
530 assert(scope >= 0);
531 assert(scope < _LOOKUP_SCOPE_MAX);
532
533 #if HAVE_SPLIT_USR
534 flags |= LOOKUP_PATHS_SPLIT_USR;
535 #endif
536
537 if (!empty_or_root(root_dir)) {
538 if (scope == LOOKUP_SCOPE_USER)
539 return -EINVAL;
540
541 r = is_dir(root_dir, true);
542 if (r < 0)
543 return r;
544 if (r == 0)
545 return -ENOTDIR;
546
547 root = strdup(root_dir);
548 if (!root)
549 return -ENOMEM;
550 }
551
552 if (flags & LOOKUP_PATHS_TEMPORARY_GENERATED) {
553 r = mkdtemp_malloc("/tmp/systemd-temporary-XXXXXX", &tempdir);
554 if (r < 0)
555 return log_debug_errno(r, "Failed to create temporary directory: %m");
556 }
557
558 /* Note: when XDG_RUNTIME_DIR is not set this will not return -ENXIO, but simply set runtime_config to NULL */
559 r = acquire_config_dirs(scope, &persistent_config, &runtime_config);
560 if (r < 0)
561 return r;
562
563 if (scope == LOOKUP_SCOPE_USER) {
564 r = acquire_config_dirs(LOOKUP_SCOPE_GLOBAL, &global_persistent_config, &global_runtime_config);
565 if (r < 0)
566 return r;
567 }
568
569 if ((flags & LOOKUP_PATHS_EXCLUDE_GENERATED) == 0) {
570 /* Note: if XDG_RUNTIME_DIR is not set, this will fail completely with ENXIO */
571 r = acquire_generator_dirs(scope, tempdir,
572 &generator, &generator_early, &generator_late);
573 if (r < 0 && !IN_SET(r, -EOPNOTSUPP, -ENXIO))
574 return r;
575 }
576
577 /* Note: if XDG_RUNTIME_DIR is not set, this will fail completely with ENXIO */
578 r = acquire_transient_dir(scope, tempdir, &transient);
579 if (r < 0 && !IN_SET(r, -EOPNOTSUPP, -ENXIO))
580 return r;
581
582 /* Note: when XDG_RUNTIME_DIR is not set this will not return -ENXIO, but simply set runtime_control to NULL */
583 r = acquire_control_dirs(scope, &persistent_control, &runtime_control);
584 if (r < 0 && r != -EOPNOTSUPP)
585 return r;
586
587 r = acquire_attached_dirs(scope, &persistent_attached, &runtime_attached);
588 if (r < 0 && r != -EOPNOTSUPP)
589 return r;
590
591 /* First priority is whatever has been passed to us via env vars */
592 r = get_paths_from_environ("SYSTEMD_UNIT_PATH", &paths, &append);
593 if (r < 0)
594 return r;
595
596 if (!paths || append) {
597 /* Let's figure something out. */
598
599 _cleanup_strv_free_ char **add = NULL;
600
601 /* For the user units we include share/ in the search
602 * path in order to comply with the XDG basedir spec.
603 * For the system stuff we avoid such nonsense. OTOH
604 * we include /lib in the search path for the system
605 * stuff but avoid it for user stuff. */
606
607 switch (scope) {
608
609 case LOOKUP_SCOPE_SYSTEM:
610 add = strv_new(
611 /* If you modify this you also want to modify
612 * systemdsystemunitpath= in systemd.pc.in! */
613 STRV_IFNOTNULL(persistent_control),
614 STRV_IFNOTNULL(runtime_control),
615 STRV_IFNOTNULL(transient),
616 STRV_IFNOTNULL(generator_early),
617 persistent_config,
618 SYSTEM_CONFIG_UNIT_DIR,
619 "/etc/systemd/system",
620 STRV_IFNOTNULL(persistent_attached),
621 runtime_config,
622 "/run/systemd/system",
623 STRV_IFNOTNULL(runtime_attached),
624 STRV_IFNOTNULL(generator),
625 "/usr/local/lib/systemd/system",
626 SYSTEM_DATA_UNIT_DIR,
627 "/usr/lib/systemd/system",
628 STRV_IFNOTNULL(flags & LOOKUP_PATHS_SPLIT_USR ? "/lib/systemd/system" : NULL),
629 STRV_IFNOTNULL(generator_late));
630 break;
631
632 case LOOKUP_SCOPE_GLOBAL:
633 add = strv_new(
634 /* If you modify this you also want to modify
635 * systemduserunitpath= in systemd.pc.in, and
636 * the arrays in user_dirs() above! */
637 STRV_IFNOTNULL(persistent_control),
638 STRV_IFNOTNULL(runtime_control),
639 STRV_IFNOTNULL(transient),
640 STRV_IFNOTNULL(generator_early),
641 persistent_config,
642 USER_CONFIG_UNIT_DIR,
643 "/etc/systemd/user",
644 runtime_config,
645 "/run/systemd/user",
646 STRV_IFNOTNULL(generator),
647 "/usr/local/share/systemd/user",
648 "/usr/share/systemd/user",
649 "/usr/local/lib/systemd/user",
650 USER_DATA_UNIT_DIR,
651 "/usr/lib/systemd/user",
652 STRV_IFNOTNULL(generator_late));
653 break;
654
655 case LOOKUP_SCOPE_USER:
656 add = user_dirs(persistent_config, runtime_config,
657 global_persistent_config, global_runtime_config,
658 generator, generator_early, generator_late,
659 transient,
660 persistent_control, runtime_control);
661 break;
662
663 default:
664 assert_not_reached();
665 }
666
667 if (!add)
668 return -ENOMEM;
669
670 if (paths) {
671 r = strv_extend_strv(&paths, add, true);
672 if (r < 0)
673 return r;
674 } else
675 /* Small optimization: if paths is NULL (and it usually is), we can simply assign 'add' to it,
676 * and don't have to copy anything */
677 paths = TAKE_PTR(add);
678 }
679
680 r = patch_root_prefix(&persistent_config, root);
681 if (r < 0)
682 return r;
683 r = patch_root_prefix(&runtime_config, root);
684 if (r < 0)
685 return r;
686
687 r = patch_root_prefix(&generator, root);
688 if (r < 0)
689 return r;
690 r = patch_root_prefix(&generator_early, root);
691 if (r < 0)
692 return r;
693 r = patch_root_prefix(&generator_late, root);
694 if (r < 0)
695 return r;
696
697 r = patch_root_prefix(&transient, root);
698 if (r < 0)
699 return r;
700
701 r = patch_root_prefix(&persistent_control, root);
702 if (r < 0)
703 return r;
704 r = patch_root_prefix(&runtime_control, root);
705 if (r < 0)
706 return r;
707
708 r = patch_root_prefix(&persistent_attached, root);
709 if (r < 0)
710 return r;
711 r = patch_root_prefix(&runtime_attached, root);
712 if (r < 0)
713 return r;
714
715 r = patch_root_prefix_strv(paths, root);
716 if (r < 0)
717 return -ENOMEM;
718
719 *lp = (LookupPaths) {
720 .search_path = strv_uniq(TAKE_PTR(paths)),
721
722 .persistent_config = TAKE_PTR(persistent_config),
723 .runtime_config = TAKE_PTR(runtime_config),
724
725 .generator = TAKE_PTR(generator),
726 .generator_early = TAKE_PTR(generator_early),
727 .generator_late = TAKE_PTR(generator_late),
728
729 .transient = TAKE_PTR(transient),
730
731 .persistent_control = TAKE_PTR(persistent_control),
732 .runtime_control = TAKE_PTR(runtime_control),
733
734 .persistent_attached = TAKE_PTR(persistent_attached),
735 .runtime_attached = TAKE_PTR(runtime_attached),
736
737 .root_dir = TAKE_PTR(root),
738 .temporary_dir = TAKE_PTR(tempdir),
739 };
740
741 return 0;
742 }
743
lookup_paths_init_or_warn(LookupPaths * lp,LookupScope scope,LookupPathsFlags flags,const char * root_dir)744 int lookup_paths_init_or_warn(LookupPaths *lp, LookupScope scope, LookupPathsFlags flags, const char *root_dir) {
745 int r;
746
747 r = lookup_paths_init(lp, scope, flags, root_dir);
748 if (r < 0)
749 return log_error_errno(r, "Failed to initialize unit search paths%s%s: %m",
750 isempty(root_dir) ? "" : " for root directory ", strempty(root_dir));
751 return r;
752 }
753
lookup_paths_free(LookupPaths * lp)754 void lookup_paths_free(LookupPaths *lp) {
755 if (!lp)
756 return;
757
758 lp->search_path = strv_free(lp->search_path);
759
760 lp->persistent_config = mfree(lp->persistent_config);
761 lp->runtime_config = mfree(lp->runtime_config);
762
763 lp->persistent_attached = mfree(lp->persistent_attached);
764 lp->runtime_attached = mfree(lp->runtime_attached);
765
766 lp->generator = mfree(lp->generator);
767 lp->generator_early = mfree(lp->generator_early);
768 lp->generator_late = mfree(lp->generator_late);
769
770 lp->transient = mfree(lp->transient);
771
772 lp->persistent_control = mfree(lp->persistent_control);
773 lp->runtime_control = mfree(lp->runtime_control);
774
775 lp->root_dir = mfree(lp->root_dir);
776 lp->temporary_dir = mfree(lp->temporary_dir);
777 }
778
lookup_paths_log(LookupPaths * lp)779 void lookup_paths_log(LookupPaths *lp) {
780 assert(lp);
781
782 if (strv_isempty(lp->search_path)) {
783 log_debug("Ignoring unit files.");
784 lp->search_path = strv_free(lp->search_path);
785 } else {
786 _cleanup_free_ char *t = NULL;
787
788 t = strv_join(lp->search_path, "\n\t");
789 log_debug("Looking for unit files in (higher priority first):\n\t%s", strna(t));
790 }
791 }
792
generator_binary_paths(LookupScope scope)793 char **generator_binary_paths(LookupScope scope) {
794 bool append = false; /* Add items from SYSTEMD_GENERATOR_PATH before normal directories */
795 _cleanup_strv_free_ char **paths = NULL;
796 int r;
797
798 /* First priority is whatever has been passed to us via env vars */
799 r = get_paths_from_environ("SYSTEMD_GENERATOR_PATH", &paths, &append);
800 if (r < 0)
801 return NULL;
802
803 if (!paths || append) {
804 _cleanup_strv_free_ char **add = NULL;
805
806 switch (scope) {
807
808 case LOOKUP_SCOPE_SYSTEM:
809 add = strv_new("/run/systemd/system-generators",
810 "/etc/systemd/system-generators",
811 "/usr/local/lib/systemd/system-generators",
812 SYSTEM_GENERATOR_DIR);
813 break;
814
815 case LOOKUP_SCOPE_GLOBAL:
816 case LOOKUP_SCOPE_USER:
817 add = strv_new("/run/systemd/user-generators",
818 "/etc/systemd/user-generators",
819 "/usr/local/lib/systemd/user-generators",
820 USER_GENERATOR_DIR);
821 break;
822
823 default:
824 assert_not_reached();
825 }
826
827 if (!add)
828 return NULL;
829
830 if (paths) {
831 r = strv_extend_strv(&paths, add, true);
832 if (r < 0)
833 return NULL;
834 } else
835 /* Small optimization: if paths is NULL (and it usually is), we can simply assign 'add' to it,
836 * and don't have to copy anything */
837 paths = TAKE_PTR(add);
838 }
839
840 return TAKE_PTR(paths);
841 }
842
env_generator_binary_paths(bool is_system)843 char **env_generator_binary_paths(bool is_system) {
844 bool append = false; /* Add items from SYSTEMD_ENVIRONMENT_GENERATOR_PATH before normal directories */
845 _cleanup_strv_free_ char **paths = NULL;
846 _cleanup_strv_free_ char **add = NULL;
847 int r;
848
849 /* First priority is whatever has been passed to us via env vars */
850 r = get_paths_from_environ("SYSTEMD_ENVIRONMENT_GENERATOR_PATH", &paths, &append);
851 if (r < 0)
852 return NULL;
853
854 if (!paths || append) {
855 if (is_system)
856 add = strv_new("/run/systemd/system-environment-generators",
857 "/etc/systemd/system-environment-generators",
858 "/usr/local/lib/systemd/system-environment-generators",
859 SYSTEM_ENV_GENERATOR_DIR);
860 else
861 add = strv_new("/run/systemd/user-environment-generators",
862 "/etc/systemd/user-environment-generators",
863 "/usr/local/lib/systemd/user-environment-generators",
864 USER_ENV_GENERATOR_DIR);
865
866 if (!add)
867 return NULL;
868 }
869
870 if (paths) {
871 r = strv_extend_strv(&paths, add, true);
872 if (r < 0)
873 return NULL;
874 } else
875 /* Small optimization: if paths is NULL (and it usually is), we can simply assign 'add' to it,
876 * and don't have to copy anything */
877 paths = TAKE_PTR(add);
878
879 return TAKE_PTR(paths);
880 }
881
find_portable_profile(const char * name,const char * unit,char ** ret_path)882 int find_portable_profile(const char *name, const char *unit, char **ret_path) {
883 const char *p, *dot;
884
885 assert(name);
886 assert(ret_path);
887
888 assert_se(dot = strrchr(unit, '.'));
889
890 NULSTR_FOREACH(p, PORTABLE_PROFILE_DIRS) {
891 _cleanup_free_ char *joined = NULL;
892
893 joined = strjoin(p, "/", name, "/", dot + 1, ".conf");
894 if (!joined)
895 return -ENOMEM;
896
897 if (laccess(joined, F_OK) >= 0) {
898 *ret_path = TAKE_PTR(joined);
899 return 0;
900 }
901
902 if (errno != ENOENT)
903 return -errno;
904 }
905
906 return -ENOENT;
907 }
908