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83096483 LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2011 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
83096483 LP |
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 | |
5430f7f2 | 16 | Lesser General Public License for more details. |
83096483 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
83096483 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
22 | #include <errno.h> | |
23 | #include <fcntl.h> | |
24 | #include <unistd.h> | |
25 | #include <string.h> | |
26 | #include <fnmatch.h> | |
27 | ||
28 | #include "util.h" | |
49e942b2 | 29 | #include "mkdir.h" |
83096483 LP |
30 | #include "hashmap.h" |
31 | #include "set.h" | |
9eb977db | 32 | #include "path-util.h" |
83096483 LP |
33 | #include "path-lookup.h" |
34 | #include "strv.h" | |
35 | #include "unit-name.h" | |
36 | #include "install.h" | |
37 | #include "conf-parser.h" | |
2c21044f | 38 | #include "conf-files.h" |
7584d236 | 39 | #include "install-printf.h" |
16ed0233 | 40 | #include "special.h" |
83096483 LP |
41 | |
42 | typedef struct { | |
9f03ee51 MS |
43 | OrderedHashmap *will_install; |
44 | OrderedHashmap *have_installed; | |
83096483 LP |
45 | } InstallContext; |
46 | ||
278fa575 | 47 | static int in_search_path(const char *path, char **search) { |
8f294b45 | 48 | _cleanup_free_ char *parent = NULL; |
8f294b45 LP |
49 | int r; |
50 | ||
51 | assert(path); | |
52 | ||
53 | r = path_get_parent(path, &parent); | |
54 | if (r < 0) | |
55 | return r; | |
56 | ||
278fa575 | 57 | return strv_contains(search, parent); |
8f294b45 LP |
58 | } |
59 | ||
83096483 LP |
60 | static int get_config_path(UnitFileScope scope, bool runtime, const char *root_dir, char **ret) { |
61 | char *p = NULL; | |
62 | int r; | |
63 | ||
64 | assert(scope >= 0); | |
65 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
66 | assert(ret); | |
67 | ||
68 | switch (scope) { | |
69 | ||
70 | case UNIT_FILE_SYSTEM: | |
71 | ||
0c6ea3a4 ZJS |
72 | if (runtime) |
73 | p = path_join(root_dir, "/run/systemd/system", NULL); | |
74 | else | |
75 | p = path_join(root_dir, SYSTEM_CONFIG_UNIT_PATH, NULL); | |
83096483 LP |
76 | break; |
77 | ||
78 | case UNIT_FILE_GLOBAL: | |
79 | ||
80 | if (root_dir) | |
81 | return -EINVAL; | |
82 | ||
83 | if (runtime) | |
84 | p = strdup("/run/systemd/user"); | |
85 | else | |
86 | p = strdup(USER_CONFIG_UNIT_PATH); | |
87 | break; | |
88 | ||
89 | case UNIT_FILE_USER: | |
90 | ||
718880ba | 91 | if (root_dir) |
83096483 LP |
92 | return -EINVAL; |
93 | ||
718880ba | 94 | if (runtime) |
4d5dec23 | 95 | r = user_runtime_dir(&p); |
718880ba SA |
96 | else |
97 | r = user_config_home(&p); | |
98 | ||
83096483 LP |
99 | if (r <= 0) |
100 | return r < 0 ? r : -ENOENT; | |
101 | ||
102 | break; | |
103 | ||
104 | default: | |
105 | assert_not_reached("Bad scope"); | |
106 | } | |
107 | ||
108 | if (!p) | |
109 | return -ENOMEM; | |
110 | ||
111 | *ret = p; | |
112 | return 0; | |
113 | } | |
114 | ||
115 | static int add_file_change( | |
116 | UnitFileChange **changes, | |
117 | unsigned *n_changes, | |
118 | UnitFileChangeType type, | |
119 | const char *path, | |
120 | const char *source) { | |
121 | ||
122 | UnitFileChange *c; | |
123 | unsigned i; | |
124 | ||
83096483 LP |
125 | assert(path); |
126 | assert(!changes == !n_changes); | |
127 | ||
128 | if (!changes) | |
129 | return 0; | |
130 | ||
131 | c = realloc(*changes, (*n_changes + 1) * sizeof(UnitFileChange)); | |
132 | if (!c) | |
133 | return -ENOMEM; | |
134 | ||
135 | *changes = c; | |
136 | i = *n_changes; | |
137 | ||
138 | c[i].type = type; | |
139 | c[i].path = strdup(path); | |
140 | if (!c[i].path) | |
141 | return -ENOMEM; | |
142 | ||
ac78d81a LP |
143 | path_kill_slashes(c[i].path); |
144 | ||
83096483 LP |
145 | if (source) { |
146 | c[i].source = strdup(source); | |
147 | if (!c[i].source) { | |
148 | free(c[i].path); | |
149 | return -ENOMEM; | |
150 | } | |
ac78d81a LP |
151 | |
152 | path_kill_slashes(c[i].path); | |
83096483 LP |
153 | } else |
154 | c[i].source = NULL; | |
155 | ||
156 | *n_changes = i+1; | |
157 | return 0; | |
158 | } | |
159 | ||
160 | static int mark_symlink_for_removal( | |
161 | Set **remove_symlinks_to, | |
162 | const char *p) { | |
163 | ||
164 | char *n; | |
165 | int r; | |
166 | ||
167 | assert(p); | |
168 | ||
d5099efc | 169 | r = set_ensure_allocated(remove_symlinks_to, &string_hash_ops); |
83096483 LP |
170 | if (r < 0) |
171 | return r; | |
172 | ||
173 | n = strdup(p); | |
174 | if (!n) | |
175 | return -ENOMEM; | |
176 | ||
177 | path_kill_slashes(n); | |
178 | ||
ef42202a ZJS |
179 | r = set_consume(*remove_symlinks_to, n); |
180 | if (r < 0) | |
83096483 | 181 | return r == -EEXIST ? 0 : r; |
83096483 LP |
182 | |
183 | return 0; | |
184 | } | |
185 | ||
186 | static int remove_marked_symlinks_fd( | |
187 | Set *remove_symlinks_to, | |
188 | int fd, | |
189 | const char *path, | |
190 | const char *config_path, | |
191 | bool *deleted, | |
192 | UnitFileChange **changes, | |
29283ea4 | 193 | unsigned *n_changes, |
bcafe923 | 194 | char** instance_whitelist) { |
83096483 | 195 | |
7fd1b19b | 196 | _cleanup_closedir_ DIR *d = NULL; |
bcafe923 | 197 | int r = 0; |
83096483 LP |
198 | |
199 | assert(remove_symlinks_to); | |
200 | assert(fd >= 0); | |
201 | assert(path); | |
202 | assert(config_path); | |
203 | assert(deleted); | |
204 | ||
205 | d = fdopendir(fd); | |
206 | if (!d) { | |
03e334a1 | 207 | safe_close(fd); |
83096483 LP |
208 | return -errno; |
209 | } | |
210 | ||
211 | rewinddir(d); | |
212 | ||
213 | for (;;) { | |
7d5e9c0f | 214 | struct dirent *de; |
83096483 | 215 | |
4d993c8c FW |
216 | errno = 0; |
217 | de = readdir(d); | |
218 | if (!de && errno != 0) { | |
83096483 LP |
219 | r = -errno; |
220 | break; | |
221 | } | |
222 | ||
223 | if (!de) | |
224 | break; | |
225 | ||
a34bf9db | 226 | if (hidden_file(de->d_name)) |
83096483 LP |
227 | continue; |
228 | ||
229 | dirent_ensure_type(d, de); | |
230 | ||
231 | if (de->d_type == DT_DIR) { | |
232 | int nfd, q; | |
7fd1b19b | 233 | _cleanup_free_ char *p = NULL; |
83096483 LP |
234 | |
235 | nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
236 | if (nfd < 0) { | |
237 | if (errno == ENOENT) | |
238 | continue; | |
239 | ||
240 | if (r == 0) | |
241 | r = -errno; | |
242 | continue; | |
243 | } | |
244 | ||
245 | p = path_make_absolute(de->d_name, path); | |
246 | if (!p) { | |
03e334a1 | 247 | safe_close(nfd); |
d9e5e694 | 248 | return -ENOMEM; |
83096483 LP |
249 | } |
250 | ||
251 | /* This will close nfd, regardless whether it succeeds or not */ | |
bcafe923 LP |
252 | q = remove_marked_symlinks_fd(remove_symlinks_to, nfd, p, config_path, deleted, changes, n_changes, instance_whitelist); |
253 | if (q < 0 && r == 0) | |
83096483 LP |
254 | r = q; |
255 | ||
256 | } else if (de->d_type == DT_LNK) { | |
7fd1b19b | 257 | _cleanup_free_ char *p = NULL, *dest = NULL; |
83096483 LP |
258 | int q; |
259 | bool found; | |
260 | ||
7410616c | 261 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
bcafe923 LP |
262 | continue; |
263 | ||
7410616c | 264 | if (unit_name_is_valid(de->d_name, UNIT_NAME_INSTANCE) && |
bcafe923 | 265 | instance_whitelist && |
559367ad LP |
266 | !strv_contains(instance_whitelist, de->d_name)) { |
267 | ||
268 | _cleanup_free_ char *w; | |
269 | ||
270 | /* OK, the file is not listed directly | |
271 | * in the whitelist, so let's check if | |
272 | * the template of it might be | |
273 | * listed. */ | |
274 | ||
7410616c LP |
275 | r = unit_name_template(de->d_name, &w); |
276 | if (r < 0) | |
277 | return r; | |
559367ad LP |
278 | |
279 | if (!strv_contains(instance_whitelist, w)) | |
280 | continue; | |
281 | } | |
bcafe923 | 282 | |
83096483 | 283 | p = path_make_absolute(de->d_name, path); |
d9e5e694 ZJS |
284 | if (!p) |
285 | return -ENOMEM; | |
83096483 LP |
286 | |
287 | q = readlink_and_canonicalize(p, &dest); | |
288 | if (q < 0) { | |
83096483 LP |
289 | if (q == -ENOENT) |
290 | continue; | |
291 | ||
292 | if (r == 0) | |
293 | r = q; | |
294 | continue; | |
295 | } | |
296 | ||
297 | found = | |
298 | set_get(remove_symlinks_to, dest) || | |
2b6bf07d | 299 | set_get(remove_symlinks_to, basename(dest)); |
83096483 | 300 | |
1dacfd2a LP |
301 | if (!found) |
302 | continue; | |
83096483 | 303 | |
1dacfd2a | 304 | if (unlink(p) < 0 && errno != ENOENT) { |
1dacfd2a LP |
305 | if (r == 0) |
306 | r = -errno; | |
307 | continue; | |
308 | } | |
bcafe923 | 309 | |
1dacfd2a | 310 | path_kill_slashes(p); |
559367ad | 311 | rmdir_parents(p, config_path); |
1dacfd2a | 312 | add_file_change(changes, n_changes, UNIT_FILE_UNLINK, p, NULL); |
83096483 | 313 | |
1dacfd2a LP |
314 | if (!set_get(remove_symlinks_to, p)) { |
315 | ||
316 | q = mark_symlink_for_removal(&remove_symlinks_to, p); | |
317 | if (q < 0) { | |
318 | if (r == 0) | |
319 | r = q; | |
320 | } else | |
321 | *deleted = true; | |
83096483 | 322 | } |
83096483 LP |
323 | } |
324 | } | |
325 | ||
83096483 LP |
326 | return r; |
327 | } | |
328 | ||
329 | static int remove_marked_symlinks( | |
330 | Set *remove_symlinks_to, | |
331 | const char *config_path, | |
332 | UnitFileChange **changes, | |
29283ea4 | 333 | unsigned *n_changes, |
bcafe923 | 334 | char** instance_whitelist) { |
83096483 | 335 | |
da39f6a6 LP |
336 | _cleanup_close_ int fd = -1; |
337 | int r = 0; | |
83096483 LP |
338 | bool deleted; |
339 | ||
340 | assert(config_path); | |
341 | ||
342 | if (set_size(remove_symlinks_to) <= 0) | |
343 | return 0; | |
344 | ||
345 | fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
346 | if (fd < 0) | |
347 | return -errno; | |
348 | ||
349 | do { | |
350 | int q, cfd; | |
351 | deleted = false; | |
352 | ||
ead34950 | 353 | cfd = fcntl(fd, F_DUPFD_CLOEXEC, 3); |
83096483 LP |
354 | if (cfd < 0) { |
355 | r = -errno; | |
356 | break; | |
357 | } | |
358 | ||
359 | /* This takes possession of cfd and closes it */ | |
bcafe923 | 360 | q = remove_marked_symlinks_fd(remove_symlinks_to, cfd, config_path, config_path, &deleted, changes, n_changes, instance_whitelist); |
83096483 LP |
361 | if (r == 0) |
362 | r = q; | |
363 | } while (deleted); | |
364 | ||
83096483 LP |
365 | return r; |
366 | } | |
367 | ||
368 | static int find_symlinks_fd( | |
369 | const char *name, | |
370 | int fd, | |
371 | const char *path, | |
372 | const char *config_path, | |
373 | bool *same_name_link) { | |
374 | ||
375 | int r = 0; | |
7fd1b19b | 376 | _cleanup_closedir_ DIR *d = NULL; |
83096483 LP |
377 | |
378 | assert(name); | |
379 | assert(fd >= 0); | |
380 | assert(path); | |
381 | assert(config_path); | |
382 | assert(same_name_link); | |
383 | ||
384 | d = fdopendir(fd); | |
385 | if (!d) { | |
03e334a1 | 386 | safe_close(fd); |
83096483 LP |
387 | return -errno; |
388 | } | |
389 | ||
390 | for (;;) { | |
7d5e9c0f | 391 | struct dirent *de; |
83096483 | 392 | |
4d993c8c FW |
393 | errno = 0; |
394 | de = readdir(d); | |
395 | if (!de && errno != 0) | |
ea55addc | 396 | return -errno; |
83096483 LP |
397 | |
398 | if (!de) | |
ea55addc | 399 | return r; |
83096483 | 400 | |
a34bf9db | 401 | if (hidden_file(de->d_name)) |
83096483 LP |
402 | continue; |
403 | ||
404 | dirent_ensure_type(d, de); | |
405 | ||
406 | if (de->d_type == DT_DIR) { | |
407 | int nfd, q; | |
7fd1b19b | 408 | _cleanup_free_ char *p = NULL; |
83096483 LP |
409 | |
410 | nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
411 | if (nfd < 0) { | |
412 | if (errno == ENOENT) | |
413 | continue; | |
414 | ||
415 | if (r == 0) | |
416 | r = -errno; | |
417 | continue; | |
418 | } | |
419 | ||
420 | p = path_make_absolute(de->d_name, path); | |
421 | if (!p) { | |
03e334a1 | 422 | safe_close(nfd); |
ea55addc | 423 | return -ENOMEM; |
83096483 LP |
424 | } |
425 | ||
426 | /* This will close nfd, regardless whether it succeeds or not */ | |
427 | q = find_symlinks_fd(name, nfd, p, config_path, same_name_link); | |
ea55addc ZJS |
428 | if (q > 0) |
429 | return 1; | |
83096483 LP |
430 | if (r == 0) |
431 | r = q; | |
432 | ||
433 | } else if (de->d_type == DT_LNK) { | |
7fd1b19b | 434 | _cleanup_free_ char *p = NULL, *dest = NULL; |
83096483 LP |
435 | bool found_path, found_dest, b = false; |
436 | int q; | |
437 | ||
438 | /* Acquire symlink name */ | |
439 | p = path_make_absolute(de->d_name, path); | |
ea55addc ZJS |
440 | if (!p) |
441 | return -ENOMEM; | |
83096483 LP |
442 | |
443 | /* Acquire symlink destination */ | |
444 | q = readlink_and_canonicalize(p, &dest); | |
445 | if (q < 0) { | |
83096483 LP |
446 | if (q == -ENOENT) |
447 | continue; | |
448 | ||
449 | if (r == 0) | |
450 | r = q; | |
451 | continue; | |
452 | } | |
453 | ||
454 | /* Check if the symlink itself matches what we | |
455 | * are looking for */ | |
456 | if (path_is_absolute(name)) | |
457 | found_path = path_equal(p, name); | |
458 | else | |
459 | found_path = streq(de->d_name, name); | |
460 | ||
461 | /* Check if what the symlink points to | |
462 | * matches what we are looking for */ | |
463 | if (path_is_absolute(name)) | |
464 | found_dest = path_equal(dest, name); | |
465 | else | |
2b6bf07d | 466 | found_dest = streq(basename(dest), name); |
83096483 | 467 | |
83096483 | 468 | if (found_path && found_dest) { |
7fd1b19b | 469 | _cleanup_free_ char *t = NULL; |
83096483 LP |
470 | |
471 | /* Filter out same name links in the main | |
472 | * config path */ | |
473 | t = path_make_absolute(name, config_path); | |
ea55addc ZJS |
474 | if (!t) |
475 | return -ENOMEM; | |
83096483 LP |
476 | |
477 | b = path_equal(t, p); | |
83096483 LP |
478 | } |
479 | ||
83096483 LP |
480 | if (b) |
481 | *same_name_link = true; | |
ea55addc ZJS |
482 | else if (found_path || found_dest) |
483 | return 1; | |
83096483 LP |
484 | } |
485 | } | |
83096483 LP |
486 | } |
487 | ||
488 | static int find_symlinks( | |
489 | const char *name, | |
490 | const char *config_path, | |
491 | bool *same_name_link) { | |
492 | ||
493 | int fd; | |
494 | ||
495 | assert(name); | |
496 | assert(config_path); | |
497 | assert(same_name_link); | |
498 | ||
499 | fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
d5891fda ZJS |
500 | if (fd < 0) { |
501 | if (errno == ENOENT) | |
502 | return 0; | |
83096483 | 503 | return -errno; |
d5891fda | 504 | } |
83096483 LP |
505 | |
506 | /* This takes possession of fd and closes it */ | |
507 | return find_symlinks_fd(name, fd, config_path, config_path, same_name_link); | |
508 | } | |
509 | ||
510 | static int find_symlinks_in_scope( | |
511 | UnitFileScope scope, | |
512 | const char *root_dir, | |
513 | const char *name, | |
514 | UnitFileState *state) { | |
515 | ||
516 | int r; | |
0d674488 | 517 | _cleanup_free_ char *normal_path = NULL, *runtime_path = NULL; |
83096483 LP |
518 | bool same_name_link_runtime = false, same_name_link = false; |
519 | ||
520 | assert(scope >= 0); | |
521 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
522 | assert(name); | |
523 | ||
718880ba | 524 | /* First look in runtime config path */ |
0d674488 | 525 | r = get_config_path(scope, true, root_dir, &normal_path); |
718880ba SA |
526 | if (r < 0) |
527 | return r; | |
83096483 | 528 | |
0d674488 | 529 | r = find_symlinks(name, normal_path, &same_name_link_runtime); |
718880ba SA |
530 | if (r < 0) |
531 | return r; | |
532 | else if (r > 0) { | |
533 | *state = UNIT_FILE_ENABLED_RUNTIME; | |
534 | return r; | |
83096483 LP |
535 | } |
536 | ||
537 | /* Then look in the normal config path */ | |
0d674488 | 538 | r = get_config_path(scope, false, root_dir, &runtime_path); |
83096483 LP |
539 | if (r < 0) |
540 | return r; | |
541 | ||
0d674488 | 542 | r = find_symlinks(name, runtime_path, &same_name_link); |
83096483 LP |
543 | if (r < 0) |
544 | return r; | |
545 | else if (r > 0) { | |
546 | *state = UNIT_FILE_ENABLED; | |
547 | return r; | |
548 | } | |
549 | ||
550 | /* Hmm, we didn't find it, but maybe we found the same name | |
551 | * link? */ | |
552 | if (same_name_link_runtime) { | |
553 | *state = UNIT_FILE_LINKED_RUNTIME; | |
554 | return 1; | |
555 | } else if (same_name_link) { | |
556 | *state = UNIT_FILE_LINKED; | |
557 | return 1; | |
558 | } | |
559 | ||
560 | return 0; | |
561 | } | |
562 | ||
563 | int unit_file_mask( | |
564 | UnitFileScope scope, | |
565 | bool runtime, | |
566 | const char *root_dir, | |
7195aa42 | 567 | char **files, |
83096483 LP |
568 | bool force, |
569 | UnitFileChange **changes, | |
570 | unsigned *n_changes) { | |
571 | ||
d8831ed5 | 572 | char **i; |
22321774 | 573 | _cleanup_free_ char *prefix = NULL; |
83096483 LP |
574 | int r; |
575 | ||
576 | assert(scope >= 0); | |
577 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
578 | ||
579 | r = get_config_path(scope, runtime, root_dir, &prefix); | |
580 | if (r < 0) | |
581 | return r; | |
582 | ||
583 | STRV_FOREACH(i, files) { | |
7fd1b19b | 584 | _cleanup_free_ char *path = NULL; |
83096483 | 585 | |
7410616c | 586 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) { |
83096483 LP |
587 | if (r == 0) |
588 | r = -EINVAL; | |
589 | continue; | |
590 | } | |
591 | ||
592 | path = path_make_absolute(*i, prefix); | |
593 | if (!path) { | |
594 | r = -ENOMEM; | |
595 | break; | |
596 | } | |
597 | ||
598 | if (symlink("/dev/null", path) >= 0) { | |
599 | add_file_change(changes, n_changes, UNIT_FILE_SYMLINK, path, "/dev/null"); | |
83096483 LP |
600 | continue; |
601 | } | |
602 | ||
603 | if (errno == EEXIST) { | |
604 | ||
d8831ed5 | 605 | if (null_or_empty_path(path) > 0) |
83096483 | 606 | continue; |
83096483 LP |
607 | |
608 | if (force) { | |
1f8c4604 | 609 | if (symlink_atomic("/dev/null", path) >= 0) { |
83096483 LP |
610 | add_file_change(changes, n_changes, UNIT_FILE_UNLINK, path, NULL); |
611 | add_file_change(changes, n_changes, UNIT_FILE_SYMLINK, path, "/dev/null"); | |
83096483 LP |
612 | continue; |
613 | } | |
614 | } | |
615 | ||
616 | if (r == 0) | |
617 | r = -EEXIST; | |
618 | } else { | |
619 | if (r == 0) | |
620 | r = -errno; | |
621 | } | |
83096483 LP |
622 | } |
623 | ||
83096483 LP |
624 | return r; |
625 | } | |
626 | ||
627 | int unit_file_unmask( | |
628 | UnitFileScope scope, | |
629 | bool runtime, | |
630 | const char *root_dir, | |
7195aa42 | 631 | char **files, |
83096483 LP |
632 | UnitFileChange **changes, |
633 | unsigned *n_changes) { | |
634 | ||
635 | char **i, *config_path = NULL; | |
636 | int r, q; | |
637 | Set *remove_symlinks_to = NULL; | |
638 | ||
639 | assert(scope >= 0); | |
640 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
641 | ||
642 | r = get_config_path(scope, runtime, root_dir, &config_path); | |
643 | if (r < 0) | |
644 | goto finish; | |
645 | ||
646 | STRV_FOREACH(i, files) { | |
56e73b34 | 647 | _cleanup_free_ char *path = NULL; |
83096483 | 648 | |
7410616c | 649 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) { |
83096483 LP |
650 | if (r == 0) |
651 | r = -EINVAL; | |
652 | continue; | |
653 | } | |
654 | ||
655 | path = path_make_absolute(*i, config_path); | |
656 | if (!path) { | |
657 | r = -ENOMEM; | |
658 | break; | |
659 | } | |
660 | ||
661 | q = null_or_empty_path(path); | |
662 | if (q > 0) { | |
56e73b34 TG |
663 | if (unlink(path) < 0) |
664 | q = -errno; | |
665 | else { | |
666 | q = mark_symlink_for_removal(&remove_symlinks_to, path); | |
83096483 | 667 | add_file_change(changes, n_changes, UNIT_FILE_UNLINK, path, NULL); |
83096483 | 668 | } |
83096483 LP |
669 | } |
670 | ||
671 | if (q != -ENOENT && r == 0) | |
672 | r = q; | |
83096483 LP |
673 | } |
674 | ||
675 | ||
676 | finish: | |
29283ea4 | 677 | q = remove_marked_symlinks(remove_symlinks_to, config_path, changes, n_changes, files); |
83096483 LP |
678 | if (r == 0) |
679 | r = q; | |
680 | ||
681 | set_free_free(remove_symlinks_to); | |
682 | free(config_path); | |
683 | ||
684 | return r; | |
685 | } | |
686 | ||
687 | int unit_file_link( | |
688 | UnitFileScope scope, | |
689 | bool runtime, | |
690 | const char *root_dir, | |
7195aa42 | 691 | char **files, |
83096483 LP |
692 | bool force, |
693 | UnitFileChange **changes, | |
694 | unsigned *n_changes) { | |
695 | ||
7fd1b19b | 696 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
d9e5e694 | 697 | char **i; |
7fd1b19b | 698 | _cleanup_free_ char *config_path = NULL; |
83096483 LP |
699 | int r, q; |
700 | ||
701 | assert(scope >= 0); | |
702 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
703 | ||
12ed81d9 | 704 | r = lookup_paths_init_from_scope(&paths, scope, root_dir); |
83096483 LP |
705 | if (r < 0) |
706 | return r; | |
707 | ||
708 | r = get_config_path(scope, runtime, root_dir, &config_path); | |
709 | if (r < 0) | |
d9e5e694 | 710 | return r; |
83096483 LP |
711 | |
712 | STRV_FOREACH(i, files) { | |
7fd1b19b | 713 | _cleanup_free_ char *path = NULL; |
d9e5e694 | 714 | char *fn; |
83096483 LP |
715 | struct stat st; |
716 | ||
2b6bf07d | 717 | fn = basename(*i); |
83096483 LP |
718 | |
719 | if (!path_is_absolute(*i) || | |
7410616c | 720 | !unit_name_is_valid(fn, UNIT_NAME_ANY)) { |
83096483 LP |
721 | if (r == 0) |
722 | r = -EINVAL; | |
723 | continue; | |
724 | } | |
725 | ||
726 | if (lstat(*i, &st) < 0) { | |
727 | if (r == 0) | |
728 | r = -errno; | |
729 | continue; | |
730 | } | |
731 | ||
732 | if (!S_ISREG(st.st_mode)) { | |
733 | r = -ENOENT; | |
734 | continue; | |
735 | } | |
736 | ||
278fa575 | 737 | q = in_search_path(*i, paths.unit_path); |
d9e5e694 ZJS |
738 | if (q < 0) |
739 | return q; | |
83096483 LP |
740 | |
741 | if (q > 0) | |
742 | continue; | |
743 | ||
744 | path = path_make_absolute(fn, config_path); | |
d9e5e694 ZJS |
745 | if (!path) |
746 | return -ENOMEM; | |
83096483 LP |
747 | |
748 | if (symlink(*i, path) >= 0) { | |
749 | add_file_change(changes, n_changes, UNIT_FILE_SYMLINK, path, *i); | |
83096483 LP |
750 | continue; |
751 | } | |
752 | ||
753 | if (errno == EEXIST) { | |
7fd1b19b | 754 | _cleanup_free_ char *dest = NULL; |
83096483 LP |
755 | |
756 | q = readlink_and_make_absolute(path, &dest); | |
83096483 | 757 | if (q < 0 && errno != ENOENT) { |
83096483 LP |
758 | if (r == 0) |
759 | r = q; | |
83096483 LP |
760 | continue; |
761 | } | |
762 | ||
d9e5e694 | 763 | if (q >= 0 && path_equal(dest, *i)) |
83096483 | 764 | continue; |
83096483 LP |
765 | |
766 | if (force) { | |
1f8c4604 | 767 | if (symlink_atomic(*i, path) >= 0) { |
83096483 LP |
768 | add_file_change(changes, n_changes, UNIT_FILE_UNLINK, path, NULL); |
769 | add_file_change(changes, n_changes, UNIT_FILE_SYMLINK, path, *i); | |
83096483 LP |
770 | continue; |
771 | } | |
772 | } | |
773 | ||
774 | if (r == 0) | |
775 | r = -EEXIST; | |
776 | } else { | |
777 | if (r == 0) | |
778 | r = -errno; | |
779 | } | |
83096483 LP |
780 | } |
781 | ||
83096483 LP |
782 | return r; |
783 | } | |
784 | ||
785 | void unit_file_list_free(Hashmap *h) { | |
786 | UnitFileList *i; | |
787 | ||
788 | while ((i = hashmap_steal_first(h))) { | |
789 | free(i->path); | |
790 | free(i); | |
791 | } | |
792 | ||
793 | hashmap_free(h); | |
794 | } | |
795 | ||
796 | void unit_file_changes_free(UnitFileChange *changes, unsigned n_changes) { | |
797 | unsigned i; | |
798 | ||
799 | assert(changes || n_changes == 0); | |
800 | ||
801 | if (!changes) | |
802 | return; | |
803 | ||
804 | for (i = 0; i < n_changes; i++) { | |
805 | free(changes[i].path); | |
806 | free(changes[i].source); | |
807 | } | |
808 | ||
809 | free(changes); | |
810 | } | |
811 | ||
cab6235f | 812 | static void install_info_free(UnitFileInstallInfo *i) { |
83096483 LP |
813 | assert(i); |
814 | ||
815 | free(i->name); | |
816 | free(i->path); | |
817 | strv_free(i->aliases); | |
818 | strv_free(i->wanted_by); | |
78d54bd4 | 819 | strv_free(i->required_by); |
aedd4012 | 820 | strv_free(i->also); |
d54c4993 | 821 | free(i->default_instance); |
83096483 LP |
822 | free(i); |
823 | } | |
824 | ||
9f03ee51 | 825 | static void install_info_hashmap_free(OrderedHashmap *m) { |
cab6235f | 826 | UnitFileInstallInfo *i; |
83096483 LP |
827 | |
828 | if (!m) | |
829 | return; | |
830 | ||
9f03ee51 | 831 | while ((i = ordered_hashmap_steal_first(m))) |
83096483 LP |
832 | install_info_free(i); |
833 | ||
9f03ee51 | 834 | ordered_hashmap_free(m); |
83096483 LP |
835 | } |
836 | ||
837 | static void install_context_done(InstallContext *c) { | |
838 | assert(c); | |
839 | ||
840 | install_info_hashmap_free(c->will_install); | |
841 | install_info_hashmap_free(c->have_installed); | |
842 | ||
843 | c->will_install = c->have_installed = NULL; | |
844 | } | |
845 | ||
846 | static int install_info_add( | |
847 | InstallContext *c, | |
848 | const char *name, | |
849 | const char *path) { | |
cab6235f | 850 | UnitFileInstallInfo *i = NULL; |
83096483 LP |
851 | int r; |
852 | ||
853 | assert(c); | |
854 | assert(name || path); | |
855 | ||
856 | if (!name) | |
2b6bf07d | 857 | name = basename(path); |
83096483 | 858 | |
7410616c | 859 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
83096483 LP |
860 | return -EINVAL; |
861 | ||
9f03ee51 MS |
862 | if (ordered_hashmap_get(c->have_installed, name) || |
863 | ordered_hashmap_get(c->will_install, name)) | |
83096483 LP |
864 | return 0; |
865 | ||
9f03ee51 | 866 | r = ordered_hashmap_ensure_allocated(&c->will_install, &string_hash_ops); |
83096483 LP |
867 | if (r < 0) |
868 | return r; | |
869 | ||
cab6235f | 870 | i = new0(UnitFileInstallInfo, 1); |
83096483 LP |
871 | if (!i) |
872 | return -ENOMEM; | |
873 | ||
874 | i->name = strdup(name); | |
875 | if (!i->name) { | |
876 | r = -ENOMEM; | |
877 | goto fail; | |
878 | } | |
879 | ||
880 | if (path) { | |
881 | i->path = strdup(path); | |
882 | if (!i->path) { | |
883 | r = -ENOMEM; | |
884 | goto fail; | |
885 | } | |
886 | } | |
887 | ||
9f03ee51 | 888 | r = ordered_hashmap_put(c->will_install, i->name, i); |
83096483 LP |
889 | if (r < 0) |
890 | goto fail; | |
891 | ||
892 | return 0; | |
893 | ||
894 | fail: | |
895 | if (i) | |
896 | install_info_free(i); | |
897 | ||
898 | return r; | |
899 | } | |
900 | ||
901 | static int install_info_add_auto( | |
902 | InstallContext *c, | |
903 | const char *name_or_path) { | |
904 | ||
905 | assert(c); | |
906 | assert(name_or_path); | |
907 | ||
908 | if (path_is_absolute(name_or_path)) | |
909 | return install_info_add(c, NULL, name_or_path); | |
910 | else | |
911 | return install_info_add(c, name_or_path, NULL); | |
912 | } | |
913 | ||
d54c4993 LP |
914 | static int config_parse_also( |
915 | const char *unit, | |
916 | const char *filename, | |
917 | unsigned line, | |
918 | const char *section, | |
919 | unsigned section_line, | |
920 | const char *lvalue, | |
921 | int ltype, | |
922 | const char *rvalue, | |
923 | void *data, | |
924 | void *userdata) { | |
83096483 | 925 | |
83096483 | 926 | size_t l; |
a2a5291b | 927 | const char *word, *state; |
83096483 | 928 | InstallContext *c = data; |
cab6235f | 929 | UnitFileInstallInfo *i = userdata; |
83096483 LP |
930 | |
931 | assert(filename); | |
932 | assert(lvalue); | |
933 | assert(rvalue); | |
934 | ||
a2a5291b | 935 | FOREACH_WORD_QUOTED(word, l, rvalue, state) { |
7fd1b19b | 936 | _cleanup_free_ char *n; |
83096483 LP |
937 | int r; |
938 | ||
a2a5291b | 939 | n = strndup(word, l); |
83096483 LP |
940 | if (!n) |
941 | return -ENOMEM; | |
942 | ||
943 | r = install_info_add(c, n, NULL); | |
d9e5e694 | 944 | if (r < 0) |
83096483 | 945 | return r; |
aedd4012 JS |
946 | |
947 | r = strv_extend(&i->also, n); | |
948 | if (r < 0) | |
949 | return r; | |
83096483 | 950 | } |
b2fadec6 ZJS |
951 | if (!isempty(state)) |
952 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
953 | "Trailing garbage, ignoring."); | |
83096483 LP |
954 | |
955 | return 0; | |
956 | } | |
957 | ||
d54c4993 LP |
958 | static int config_parse_user( |
959 | const char *unit, | |
960 | const char *filename, | |
961 | unsigned line, | |
962 | const char *section, | |
963 | unsigned section_line, | |
964 | const char *lvalue, | |
965 | int ltype, | |
966 | const char *rvalue, | |
967 | void *data, | |
968 | void *userdata) { | |
3f0b2f0f | 969 | |
cab6235f | 970 | UnitFileInstallInfo *i = data; |
d54c4993 | 971 | char *printed; |
19f6d710 | 972 | int r; |
3f0b2f0f ZJS |
973 | |
974 | assert(filename); | |
975 | assert(lvalue); | |
976 | assert(rvalue); | |
977 | ||
19f6d710 LP |
978 | r = install_full_printf(i, rvalue, &printed); |
979 | if (r < 0) | |
980 | return r; | |
3f0b2f0f ZJS |
981 | |
982 | free(i->user); | |
983 | i->user = printed; | |
984 | ||
985 | return 0; | |
986 | } | |
987 | ||
d54c4993 LP |
988 | static int config_parse_default_instance( |
989 | const char *unit, | |
990 | const char *filename, | |
991 | unsigned line, | |
992 | const char *section, | |
993 | unsigned section_line, | |
994 | const char *lvalue, | |
995 | int ltype, | |
996 | const char *rvalue, | |
997 | void *data, | |
998 | void *userdata) { | |
999 | ||
cab6235f | 1000 | UnitFileInstallInfo *i = data; |
d54c4993 LP |
1001 | char *printed; |
1002 | int r; | |
1003 | ||
1004 | assert(filename); | |
1005 | assert(lvalue); | |
1006 | assert(rvalue); | |
1007 | ||
1008 | r = install_full_printf(i, rvalue, &printed); | |
1009 | if (r < 0) | |
1010 | return r; | |
1011 | ||
d9ab174b AH |
1012 | if (!unit_instance_is_valid(printed)) { |
1013 | free(printed); | |
d54c4993 | 1014 | return -EINVAL; |
d9ab174b | 1015 | } |
d54c4993 LP |
1016 | |
1017 | free(i->default_instance); | |
1018 | i->default_instance = printed; | |
1019 | ||
1020 | return 0; | |
1021 | } | |
1022 | ||
83096483 LP |
1023 | static int unit_file_load( |
1024 | InstallContext *c, | |
cab6235f | 1025 | UnitFileInstallInfo *info, |
83096483 | 1026 | const char *path, |
278fa575 | 1027 | const char *root_dir, |
e94937df | 1028 | bool allow_symlink, |
aedd4012 JS |
1029 | bool load, |
1030 | bool *also) { | |
83096483 | 1031 | |
f975e971 | 1032 | const ConfigTableItem items[] = { |
d54c4993 LP |
1033 | { "Install", "Alias", config_parse_strv, 0, &info->aliases }, |
1034 | { "Install", "WantedBy", config_parse_strv, 0, &info->wanted_by }, | |
1035 | { "Install", "RequiredBy", config_parse_strv, 0, &info->required_by }, | |
1036 | { "Install", "DefaultInstance", config_parse_default_instance, 0, info }, | |
1037 | { "Install", "Also", config_parse_also, 0, c }, | |
1038 | { "Exec", "User", config_parse_user, 0, info }, | |
1039 | {} | |
83096483 LP |
1040 | }; |
1041 | ||
7fd1b19b | 1042 | _cleanup_fclose_ FILE *f = NULL; |
278fa575 | 1043 | int fd, r; |
83096483 LP |
1044 | |
1045 | assert(c); | |
1046 | assert(info); | |
1047 | assert(path); | |
1048 | ||
278fa575 | 1049 | if (!isempty(root_dir)) |
63c372cb | 1050 | path = strjoina(root_dir, "/", path); |
278fa575 | 1051 | |
e94937df LN |
1052 | if (!load) { |
1053 | r = access(path, F_OK) ? -errno : 0; | |
1054 | return r; | |
1055 | } | |
1056 | ||
83096483 LP |
1057 | fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|(allow_symlink ? 0 : O_NOFOLLOW)); |
1058 | if (fd < 0) | |
1059 | return -errno; | |
1060 | ||
1061 | f = fdopen(fd, "re"); | |
1062 | if (!f) { | |
03e334a1 | 1063 | safe_close(fd); |
83096483 LP |
1064 | return -ENOMEM; |
1065 | } | |
1066 | ||
36f822c4 ZJS |
1067 | r = config_parse(NULL, path, f, |
1068 | NULL, | |
1069 | config_item_table_lookup, items, | |
1070 | true, true, false, info); | |
83096483 LP |
1071 | if (r < 0) |
1072 | return r; | |
1073 | ||
aedd4012 JS |
1074 | if (also) |
1075 | *also = !strv_isempty(info->also); | |
1076 | ||
78d54bd4 | 1077 | return |
693eb9a2 LP |
1078 | (int) strv_length(info->aliases) + |
1079 | (int) strv_length(info->wanted_by) + | |
1080 | (int) strv_length(info->required_by); | |
83096483 LP |
1081 | } |
1082 | ||
1083 | static int unit_file_search( | |
1084 | InstallContext *c, | |
cab6235f | 1085 | UnitFileInstallInfo *info, |
a8ffe6fb | 1086 | const LookupPaths *paths, |
83096483 | 1087 | const char *root_dir, |
e94937df | 1088 | bool allow_symlink, |
aedd4012 JS |
1089 | bool load, |
1090 | bool *also) { | |
83096483 LP |
1091 | |
1092 | char **p; | |
1093 | int r; | |
1094 | ||
1095 | assert(c); | |
1096 | assert(info); | |
1097 | assert(paths); | |
1098 | ||
278fa575 | 1099 | if (info->path) |
aedd4012 | 1100 | return unit_file_load(c, info, info->path, root_dir, allow_symlink, load, also); |
83096483 LP |
1101 | |
1102 | assert(info->name); | |
1103 | ||
1104 | STRV_FOREACH(p, paths->unit_path) { | |
e50bd775 | 1105 | _cleanup_free_ char *path = NULL; |
83096483 | 1106 | |
278fa575 | 1107 | path = strjoin(*p, "/", info->name, NULL); |
83096483 LP |
1108 | if (!path) |
1109 | return -ENOMEM; | |
1110 | ||
aedd4012 | 1111 | r = unit_file_load(c, info, path, root_dir, allow_symlink, load, also); |
62b00233 | 1112 | if (r >= 0) { |
83096483 | 1113 | info->path = path; |
62b00233 | 1114 | path = NULL; |
e50bd775 LP |
1115 | return r; |
1116 | } | |
1117 | if (r != -ENOENT && r != -ELOOP) | |
1118 | return r; | |
1119 | } | |
62b00233 | 1120 | |
7410616c | 1121 | if (unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { |
29283ea4 | 1122 | |
e50bd775 LP |
1123 | /* Unit file doesn't exist, however instance |
1124 | * enablement was requested. We will check if it is | |
1125 | * possible to load template unit file. */ | |
29283ea4 | 1126 | |
de228aab | 1127 | _cleanup_free_ char *template = NULL; |
e50bd775 | 1128 | |
7410616c LP |
1129 | r = unit_name_template(info->name, &template); |
1130 | if (r < 0) | |
1131 | return r; | |
e50bd775 LP |
1132 | |
1133 | STRV_FOREACH(p, paths->unit_path) { | |
1134 | _cleanup_free_ char *path = NULL; | |
1135 | ||
278fa575 | 1136 | path = strjoin(*p, "/", template, NULL); |
62b00233 ZJS |
1137 | if (!path) |
1138 | return -ENOMEM; | |
29283ea4 | 1139 | |
aedd4012 | 1140 | r = unit_file_load(c, info, path, root_dir, allow_symlink, load, also); |
62b00233 ZJS |
1141 | if (r >= 0) { |
1142 | info->path = path; | |
1143 | path = NULL; | |
e50bd775 | 1144 | return r; |
29283ea4 | 1145 | } |
e50bd775 LP |
1146 | if (r != -ENOENT && r != -ELOOP) |
1147 | return r; | |
29283ea4 | 1148 | } |
83096483 LP |
1149 | } |
1150 | ||
1151 | return -ENOENT; | |
1152 | } | |
1153 | ||
1154 | static int unit_file_can_install( | |
a8ffe6fb | 1155 | const LookupPaths *paths, |
83096483 LP |
1156 | const char *root_dir, |
1157 | const char *name, | |
aedd4012 JS |
1158 | bool allow_symlink, |
1159 | bool *also) { | |
83096483 | 1160 | |
59ccf93d | 1161 | _cleanup_(install_context_done) InstallContext c = {}; |
cab6235f | 1162 | UnitFileInstallInfo *i; |
83096483 LP |
1163 | int r; |
1164 | ||
1165 | assert(paths); | |
1166 | assert(name); | |
1167 | ||
83096483 LP |
1168 | r = install_info_add_auto(&c, name); |
1169 | if (r < 0) | |
1170 | return r; | |
1171 | ||
9f03ee51 | 1172 | assert_se(i = ordered_hashmap_first(c.will_install)); |
83096483 | 1173 | |
aedd4012 | 1174 | r = unit_file_search(&c, i, paths, root_dir, allow_symlink, true, also); |
83096483 LP |
1175 | |
1176 | if (r >= 0) | |
78d54bd4 | 1177 | r = |
693eb9a2 LP |
1178 | (int) strv_length(i->aliases) + |
1179 | (int) strv_length(i->wanted_by) + | |
1180 | (int) strv_length(i->required_by); | |
83096483 | 1181 | |
83096483 LP |
1182 | return r; |
1183 | } | |
1184 | ||
1185 | static int create_symlink( | |
1186 | const char *old_path, | |
1187 | const char *new_path, | |
1188 | bool force, | |
1189 | UnitFileChange **changes, | |
1190 | unsigned *n_changes) { | |
1191 | ||
7fd1b19b | 1192 | _cleanup_free_ char *dest = NULL; |
83096483 LP |
1193 | int r; |
1194 | ||
1195 | assert(old_path); | |
1196 | assert(new_path); | |
1197 | ||
d2e54fae | 1198 | mkdir_parents_label(new_path, 0755); |
83096483 LP |
1199 | |
1200 | if (symlink(old_path, new_path) >= 0) { | |
1201 | add_file_change(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path); | |
1202 | return 0; | |
1203 | } | |
1204 | ||
1205 | if (errno != EEXIST) | |
1206 | return -errno; | |
1207 | ||
1208 | r = readlink_and_make_absolute(new_path, &dest); | |
1209 | if (r < 0) | |
1210 | return r; | |
1211 | ||
d9e5e694 | 1212 | if (path_equal(dest, old_path)) |
83096483 | 1213 | return 0; |
83096483 | 1214 | |
ba49b4a1 | 1215 | if (!force) |
83096483 LP |
1216 | return -EEXIST; |
1217 | ||
1f8c4604 LP |
1218 | r = symlink_atomic(old_path, new_path); |
1219 | if (r < 0) | |
1220 | return r; | |
83096483 | 1221 | |
1f8c4604 LP |
1222 | add_file_change(changes, n_changes, UNIT_FILE_UNLINK, new_path, NULL); |
1223 | add_file_change(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path); | |
83096483 | 1224 | |
1f8c4604 | 1225 | return 0; |
83096483 LP |
1226 | } |
1227 | ||
1228 | static int install_info_symlink_alias( | |
cab6235f | 1229 | UnitFileInstallInfo *i, |
83096483 LP |
1230 | const char *config_path, |
1231 | bool force, | |
1232 | UnitFileChange **changes, | |
1233 | unsigned *n_changes) { | |
1234 | ||
1235 | char **s; | |
1236 | int r = 0, q; | |
1237 | ||
1238 | assert(i); | |
1239 | assert(config_path); | |
1240 | ||
1241 | STRV_FOREACH(s, i->aliases) { | |
7fd1b19b | 1242 | _cleanup_free_ char *alias_path = NULL, *dst = NULL; |
83096483 | 1243 | |
19f6d710 LP |
1244 | q = install_full_printf(i, *s, &dst); |
1245 | if (q < 0) | |
1246 | return q; | |
83096483 | 1247 | |
7584d236 | 1248 | alias_path = path_make_absolute(dst, config_path); |
83096483 LP |
1249 | if (!alias_path) |
1250 | return -ENOMEM; | |
1251 | ||
1252 | q = create_symlink(i->path, alias_path, force, changes, n_changes); | |
83096483 LP |
1253 | if (r == 0) |
1254 | r = q; | |
1255 | } | |
1256 | ||
1257 | return r; | |
1258 | } | |
1259 | ||
1260 | static int install_info_symlink_wants( | |
cab6235f | 1261 | UnitFileInstallInfo *i, |
83096483 | 1262 | const char *config_path, |
d54c4993 LP |
1263 | char **list, |
1264 | const char *suffix, | |
83096483 LP |
1265 | bool force, |
1266 | UnitFileChange **changes, | |
1267 | unsigned *n_changes) { | |
1268 | ||
d54c4993 LP |
1269 | _cleanup_free_ char *buf = NULL; |
1270 | const char *n; | |
83096483 LP |
1271 | char **s; |
1272 | int r = 0, q; | |
1273 | ||
1274 | assert(i); | |
1275 | assert(config_path); | |
1276 | ||
7410616c | 1277 | if (unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE)) { |
0a327d75 LP |
1278 | |
1279 | /* Don't install any symlink if there's no default | |
1280 | * instance configured */ | |
1281 | ||
1282 | if (!i->default_instance) | |
1283 | return 0; | |
1284 | ||
7410616c LP |
1285 | r = unit_name_replace_instance(i->name, i->default_instance, &buf); |
1286 | if (r < 0) | |
1287 | return r; | |
83096483 | 1288 | |
d54c4993 LP |
1289 | n = buf; |
1290 | } else | |
1291 | n = i->name; | |
78d54bd4 | 1292 | |
d54c4993 | 1293 | STRV_FOREACH(s, list) { |
7fd1b19b | 1294 | _cleanup_free_ char *path = NULL, *dst = NULL; |
78d54bd4 | 1295 | |
19f6d710 LP |
1296 | q = install_full_printf(i, *s, &dst); |
1297 | if (q < 0) | |
1298 | return q; | |
7584d236 | 1299 | |
7410616c | 1300 | if (!unit_name_is_valid(dst, UNIT_NAME_ANY)) { |
78d54bd4 LP |
1301 | r = -EINVAL; |
1302 | continue; | |
1303 | } | |
1304 | ||
d54c4993 LP |
1305 | path = strjoin(config_path, "/", dst, suffix, n, NULL); |
1306 | if (!path) | |
78d54bd4 LP |
1307 | return -ENOMEM; |
1308 | ||
1309 | q = create_symlink(i->path, path, force, changes, n_changes); | |
78d54bd4 LP |
1310 | if (r == 0) |
1311 | r = q; | |
1312 | } | |
1313 | ||
1314 | return r; | |
1315 | } | |
1316 | ||
83096483 | 1317 | static int install_info_symlink_link( |
cab6235f | 1318 | UnitFileInstallInfo *i, |
a8ffe6fb | 1319 | const LookupPaths *paths, |
83096483 | 1320 | const char *config_path, |
8f294b45 | 1321 | const char *root_dir, |
83096483 LP |
1322 | bool force, |
1323 | UnitFileChange **changes, | |
1324 | unsigned *n_changes) { | |
1325 | ||
7fd1b19b | 1326 | _cleanup_free_ char *path = NULL; |
1dacfd2a | 1327 | int r; |
83096483 LP |
1328 | |
1329 | assert(i); | |
1330 | assert(paths); | |
1331 | assert(config_path); | |
1332 | assert(i->path); | |
1333 | ||
278fa575 | 1334 | r = in_search_path(i->path, paths->unit_path); |
83096483 LP |
1335 | if (r != 0) |
1336 | return r; | |
1337 | ||
1dacfd2a LP |
1338 | path = strjoin(config_path, "/", i->name, NULL); |
1339 | if (!path) | |
83096483 LP |
1340 | return -ENOMEM; |
1341 | ||
1dacfd2a | 1342 | return create_symlink(i->path, path, force, changes, n_changes); |
83096483 LP |
1343 | } |
1344 | ||
1345 | static int install_info_apply( | |
cab6235f | 1346 | UnitFileInstallInfo *i, |
a8ffe6fb | 1347 | const LookupPaths *paths, |
83096483 | 1348 | const char *config_path, |
8f294b45 | 1349 | const char *root_dir, |
83096483 LP |
1350 | bool force, |
1351 | UnitFileChange **changes, | |
1352 | unsigned *n_changes) { | |
1353 | ||
1354 | int r, q; | |
1355 | ||
1356 | assert(i); | |
1357 | assert(paths); | |
1358 | assert(config_path); | |
1359 | ||
1360 | r = install_info_symlink_alias(i, config_path, force, changes, n_changes); | |
1361 | ||
d54c4993 | 1362 | q = install_info_symlink_wants(i, config_path, i->wanted_by, ".wants/", force, changes, n_changes); |
83096483 LP |
1363 | if (r == 0) |
1364 | r = q; | |
1365 | ||
d54c4993 | 1366 | q = install_info_symlink_wants(i, config_path, i->required_by, ".requires/", force, changes, n_changes); |
78d54bd4 LP |
1367 | if (r == 0) |
1368 | r = q; | |
1369 | ||
8f294b45 | 1370 | q = install_info_symlink_link(i, paths, config_path, root_dir, force, changes, n_changes); |
83096483 LP |
1371 | if (r == 0) |
1372 | r = q; | |
1373 | ||
1374 | return r; | |
1375 | } | |
1376 | ||
1377 | static int install_context_apply( | |
1378 | InstallContext *c, | |
a8ffe6fb | 1379 | const LookupPaths *paths, |
83096483 LP |
1380 | const char *config_path, |
1381 | const char *root_dir, | |
1382 | bool force, | |
1383 | UnitFileChange **changes, | |
1384 | unsigned *n_changes) { | |
1385 | ||
cab6235f | 1386 | UnitFileInstallInfo *i; |
2d5c93c7 | 1387 | int r, q; |
83096483 LP |
1388 | |
1389 | assert(c); | |
1390 | assert(paths); | |
1391 | assert(config_path); | |
1392 | ||
2d5c93c7 MS |
1393 | if (!ordered_hashmap_isempty(c->will_install)) { |
1394 | r = ordered_hashmap_ensure_allocated(&c->have_installed, &string_hash_ops); | |
1395 | if (r < 0) | |
1396 | return r; | |
83096483 | 1397 | |
2d5c93c7 MS |
1398 | r = ordered_hashmap_reserve(c->have_installed, ordered_hashmap_size(c->will_install)); |
1399 | if (r < 0) | |
1400 | return r; | |
1401 | } | |
83096483 | 1402 | |
2d5c93c7 MS |
1403 | r = 0; |
1404 | while ((i = ordered_hashmap_first(c->will_install))) { | |
9f03ee51 | 1405 | assert_se(ordered_hashmap_move_one(c->have_installed, c->will_install, i->name) == 0); |
83096483 | 1406 | |
aedd4012 | 1407 | q = unit_file_search(c, i, paths, root_dir, false, true, NULL); |
83096483 LP |
1408 | if (q < 0) { |
1409 | if (r >= 0) | |
1410 | r = q; | |
1411 | ||
1412 | return r; | |
1413 | } else if (r >= 0) | |
1414 | r += q; | |
1415 | ||
8f294b45 | 1416 | q = install_info_apply(i, paths, config_path, root_dir, force, changes, n_changes); |
83096483 LP |
1417 | if (r >= 0 && q < 0) |
1418 | r = q; | |
1419 | } | |
1420 | ||
1421 | return r; | |
1422 | } | |
1423 | ||
1424 | static int install_context_mark_for_removal( | |
1425 | InstallContext *c, | |
a8ffe6fb | 1426 | const LookupPaths *paths, |
83096483 LP |
1427 | Set **remove_symlinks_to, |
1428 | const char *config_path, | |
1429 | const char *root_dir) { | |
1430 | ||
cab6235f | 1431 | UnitFileInstallInfo *i; |
2d5c93c7 | 1432 | int r, q; |
83096483 LP |
1433 | |
1434 | assert(c); | |
1435 | assert(paths); | |
1436 | assert(config_path); | |
1437 | ||
1438 | /* Marks all items for removal */ | |
1439 | ||
2d5c93c7 MS |
1440 | if (!ordered_hashmap_isempty(c->will_install)) { |
1441 | r = ordered_hashmap_ensure_allocated(&c->have_installed, &string_hash_ops); | |
1442 | if (r < 0) | |
1443 | return r; | |
83096483 | 1444 | |
2d5c93c7 MS |
1445 | r = ordered_hashmap_reserve(c->have_installed, ordered_hashmap_size(c->will_install)); |
1446 | if (r < 0) | |
1447 | return r; | |
1448 | } | |
83096483 | 1449 | |
2d5c93c7 MS |
1450 | r = 0; |
1451 | while ((i = ordered_hashmap_first(c->will_install))) { | |
9f03ee51 | 1452 | assert_se(ordered_hashmap_move_one(c->have_installed, c->will_install, i->name) == 0); |
83096483 | 1453 | |
aedd4012 | 1454 | q = unit_file_search(c, i, paths, root_dir, false, true, NULL); |
02b9e969 ZJS |
1455 | if (q == -ENOENT) { |
1456 | /* do nothing */ | |
1457 | } else if (q < 0) { | |
83096483 LP |
1458 | if (r >= 0) |
1459 | r = q; | |
1460 | ||
1461 | return r; | |
1462 | } else if (r >= 0) | |
1463 | r += q; | |
1464 | ||
7410616c | 1465 | if (unit_name_is_valid(i->name, UNIT_NAME_INSTANCE)) { |
6c5a2825 ZJS |
1466 | char *unit_file; |
1467 | ||
1468 | if (i->path) { | |
2b6bf07d | 1469 | unit_file = basename(i->path); |
6c5a2825 | 1470 | |
7410616c | 1471 | if (unit_name_is_valid(unit_file, UNIT_NAME_INSTANCE)) |
6c5a2825 ZJS |
1472 | /* unit file named as instance exists, thus all symlinks |
1473 | * pointing to it will be removed */ | |
1474 | q = mark_symlink_for_removal(remove_symlinks_to, i->name); | |
1475 | else | |
1476 | /* does not exist, thus we will mark for removal symlinks | |
1477 | * to template unit file */ | |
1478 | q = mark_symlink_for_removal(remove_symlinks_to, unit_file); | |
1479 | } else { | |
1480 | /* If i->path is not set, it means that we didn't actually find | |
1481 | * the unit file. But we can still remove symlinks to the | |
1482 | * nonexistent template. */ | |
7410616c LP |
1483 | r = unit_name_template(i->name, &unit_file); |
1484 | if (r < 0) | |
1485 | return r; | |
29283ea4 | 1486 | |
29283ea4 | 1487 | q = mark_symlink_for_removal(remove_symlinks_to, unit_file); |
6c5a2825 ZJS |
1488 | free(unit_file); |
1489 | } | |
29283ea4 MS |
1490 | } else |
1491 | q = mark_symlink_for_removal(remove_symlinks_to, i->name); | |
1492 | ||
83096483 LP |
1493 | if (r >= 0 && q < 0) |
1494 | r = q; | |
1495 | } | |
1496 | ||
1497 | return r; | |
1498 | } | |
1499 | ||
e94937df LN |
1500 | int unit_file_add_dependency( |
1501 | UnitFileScope scope, | |
1502 | bool runtime, | |
1503 | const char *root_dir, | |
1504 | char **files, | |
1505 | char *target, | |
1506 | UnitDependency dep, | |
1507 | bool force, | |
1508 | UnitFileChange **changes, | |
1509 | unsigned *n_changes) { | |
1510 | ||
1511 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; | |
1512 | _cleanup_(install_context_done) InstallContext c = {}; | |
1513 | _cleanup_free_ char *config_path = NULL; | |
1514 | char **i; | |
1515 | int r; | |
cab6235f | 1516 | UnitFileInstallInfo *info; |
e94937df LN |
1517 | |
1518 | assert(scope >= 0); | |
1519 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
1520 | ||
1521 | r = lookup_paths_init_from_scope(&paths, scope, root_dir); | |
1522 | if (r < 0) | |
1523 | return r; | |
1524 | ||
1525 | r = get_config_path(scope, runtime, root_dir, &config_path); | |
1526 | if (r < 0) | |
1527 | return r; | |
1528 | ||
1529 | STRV_FOREACH(i, files) { | |
1530 | UnitFileState state; | |
1531 | ||
1532 | state = unit_file_get_state(scope, root_dir, *i); | |
f647962d MS |
1533 | if (state < 0) |
1534 | return log_error_errno(state, "Failed to get unit file state for %s: %m", *i); | |
e94937df LN |
1535 | |
1536 | if (state == UNIT_FILE_MASKED || state == UNIT_FILE_MASKED_RUNTIME) { | |
1537 | log_error("Failed to enable unit: Unit %s is masked", *i); | |
15411c0c | 1538 | return -EOPNOTSUPP; |
e94937df LN |
1539 | } |
1540 | ||
1541 | r = install_info_add_auto(&c, *i); | |
1542 | if (r < 0) | |
1543 | return r; | |
1544 | } | |
1545 | ||
2d5c93c7 | 1546 | if (!ordered_hashmap_isempty(c.will_install)) { |
9f03ee51 | 1547 | r = ordered_hashmap_ensure_allocated(&c.have_installed, &string_hash_ops); |
e94937df LN |
1548 | if (r < 0) |
1549 | return r; | |
1550 | ||
2d5c93c7 MS |
1551 | r = ordered_hashmap_reserve(c.have_installed, ordered_hashmap_size(c.will_install)); |
1552 | if (r < 0) | |
1553 | return r; | |
1554 | } | |
1555 | ||
1556 | while ((info = ordered_hashmap_first(c.will_install))) { | |
9f03ee51 | 1557 | assert_se(ordered_hashmap_move_one(c.have_installed, c.will_install, info->name) == 0); |
e94937df | 1558 | |
aedd4012 | 1559 | r = unit_file_search(&c, info, &paths, root_dir, false, false, NULL); |
e94937df LN |
1560 | if (r < 0) |
1561 | return r; | |
1562 | ||
1563 | if (dep == UNIT_WANTS) | |
1564 | r = strv_extend(&info->wanted_by, target); | |
1565 | else if (dep == UNIT_REQUIRES) | |
1566 | r = strv_extend(&info->required_by, target); | |
1567 | else | |
1568 | r = -EINVAL; | |
1569 | ||
1570 | if (r < 0) | |
1571 | return r; | |
1572 | ||
1573 | r = install_info_apply(info, &paths, config_path, root_dir, force, changes, n_changes); | |
1574 | if (r < 0) | |
1575 | return r; | |
1576 | } | |
1577 | ||
1578 | return 0; | |
1579 | } | |
1580 | ||
83096483 LP |
1581 | int unit_file_enable( |
1582 | UnitFileScope scope, | |
1583 | bool runtime, | |
1584 | const char *root_dir, | |
7195aa42 | 1585 | char **files, |
83096483 LP |
1586 | bool force, |
1587 | UnitFileChange **changes, | |
1588 | unsigned *n_changes) { | |
1589 | ||
7fd1b19b | 1590 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
59ccf93d | 1591 | _cleanup_(install_context_done) InstallContext c = {}; |
d9e5e694 | 1592 | char **i; |
7fd1b19b | 1593 | _cleanup_free_ char *config_path = NULL; |
83096483 LP |
1594 | int r; |
1595 | ||
1596 | assert(scope >= 0); | |
1597 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
1598 | ||
12ed81d9 | 1599 | r = lookup_paths_init_from_scope(&paths, scope, root_dir); |
83096483 LP |
1600 | if (r < 0) |
1601 | return r; | |
1602 | ||
1603 | r = get_config_path(scope, runtime, root_dir, &config_path); | |
1604 | if (r < 0) | |
d9e5e694 | 1605 | return r; |
83096483 LP |
1606 | |
1607 | STRV_FOREACH(i, files) { | |
f7101b73 JS |
1608 | UnitFileState state; |
1609 | ||
0ffce503 DR |
1610 | /* We only want to know if this unit is masked, so we ignore |
1611 | * errors from unit_file_get_state, deferring other checks. | |
1612 | * This allows templated units to be enabled on the fly. */ | |
f7101b73 | 1613 | state = unit_file_get_state(scope, root_dir, *i); |
f7101b73 JS |
1614 | if (state == UNIT_FILE_MASKED || state == UNIT_FILE_MASKED_RUNTIME) { |
1615 | log_error("Failed to enable unit: Unit %s is masked", *i); | |
15411c0c | 1616 | return -EOPNOTSUPP; |
f7101b73 JS |
1617 | } |
1618 | ||
83096483 LP |
1619 | r = install_info_add_auto(&c, *i); |
1620 | if (r < 0) | |
d9e5e694 | 1621 | return r; |
83096483 LP |
1622 | } |
1623 | ||
729e3769 LP |
1624 | /* This will return the number of symlink rules that were |
1625 | supposed to be created, not the ones actually created. This is | |
20f59e42 | 1626 | useful to determine whether the passed files had any |
729e3769 | 1627 | installation data at all. */ |
b91a3b02 LP |
1628 | |
1629 | return install_context_apply(&c, &paths, config_path, root_dir, force, changes, n_changes); | |
83096483 LP |
1630 | } |
1631 | ||
1632 | int unit_file_disable( | |
1633 | UnitFileScope scope, | |
1634 | bool runtime, | |
1635 | const char *root_dir, | |
7195aa42 | 1636 | char **files, |
83096483 LP |
1637 | UnitFileChange **changes, |
1638 | unsigned *n_changes) { | |
1639 | ||
7fd1b19b | 1640 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
59ccf93d | 1641 | _cleanup_(install_context_done) InstallContext c = {}; |
d9e5e694 | 1642 | char **i; |
7fd1b19b HH |
1643 | _cleanup_free_ char *config_path = NULL; |
1644 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
83096483 LP |
1645 | int r, q; |
1646 | ||
1647 | assert(scope >= 0); | |
1648 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
1649 | ||
12ed81d9 | 1650 | r = lookup_paths_init_from_scope(&paths, scope, root_dir); |
83096483 LP |
1651 | if (r < 0) |
1652 | return r; | |
1653 | ||
1654 | r = get_config_path(scope, runtime, root_dir, &config_path); | |
1655 | if (r < 0) | |
d9e5e694 | 1656 | return r; |
83096483 LP |
1657 | |
1658 | STRV_FOREACH(i, files) { | |
1659 | r = install_info_add_auto(&c, *i); | |
1660 | if (r < 0) | |
d9e5e694 | 1661 | return r; |
83096483 LP |
1662 | } |
1663 | ||
1664 | r = install_context_mark_for_removal(&c, &paths, &remove_symlinks_to, config_path, root_dir); | |
1665 | ||
29283ea4 | 1666 | q = remove_marked_symlinks(remove_symlinks_to, config_path, changes, n_changes, files); |
e95c9837 | 1667 | if (r >= 0) |
034a2a52 | 1668 | r = q; |
83096483 | 1669 | |
83096483 LP |
1670 | return r; |
1671 | } | |
1672 | ||
1673 | int unit_file_reenable( | |
1674 | UnitFileScope scope, | |
1675 | bool runtime, | |
1676 | const char *root_dir, | |
7195aa42 | 1677 | char **files, |
83096483 LP |
1678 | bool force, |
1679 | UnitFileChange **changes, | |
1680 | unsigned *n_changes) { | |
92d430a9 | 1681 | int r; |
83096483 | 1682 | |
92d430a9 RL |
1683 | r = unit_file_disable(scope, runtime, root_dir, files, |
1684 | changes, n_changes); | |
83096483 | 1685 | if (r < 0) |
d9e5e694 | 1686 | return r; |
83096483 | 1687 | |
92d430a9 RL |
1688 | return unit_file_enable(scope, runtime, root_dir, files, force, |
1689 | changes, n_changes); | |
83096483 LP |
1690 | } |
1691 | ||
99504dd4 VP |
1692 | int unit_file_set_default( |
1693 | UnitFileScope scope, | |
1694 | const char *root_dir, | |
16ed0233 | 1695 | const char *file, |
718db961 | 1696 | bool force, |
99504dd4 VP |
1697 | UnitFileChange **changes, |
1698 | unsigned *n_changes) { | |
1699 | ||
1700 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; | |
59ccf93d | 1701 | _cleanup_(install_context_done) InstallContext c = {}; |
99504dd4 VP |
1702 | _cleanup_free_ char *config_path = NULL; |
1703 | char *path; | |
1704 | int r; | |
cab6235f | 1705 | UnitFileInstallInfo *i = NULL; |
99504dd4 VP |
1706 | |
1707 | assert(scope >= 0); | |
1708 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
16ed0233 | 1709 | assert(file); |
99504dd4 VP |
1710 | |
1711 | if (unit_name_to_type(file) != UNIT_TARGET) | |
1712 | return -EINVAL; | |
1713 | ||
12ed81d9 | 1714 | r = lookup_paths_init_from_scope(&paths, scope, root_dir); |
99504dd4 VP |
1715 | if (r < 0) |
1716 | return r; | |
1717 | ||
1718 | r = get_config_path(scope, false, root_dir, &config_path); | |
1719 | if (r < 0) | |
1720 | return r; | |
1721 | ||
1722 | r = install_info_add_auto(&c, file); | |
1723 | if (r < 0) | |
1724 | return r; | |
1725 | ||
9f03ee51 | 1726 | assert_se(i = ordered_hashmap_first(c.will_install)); |
99504dd4 | 1727 | |
aedd4012 | 1728 | r = unit_file_search(&c, i, &paths, root_dir, false, true, NULL); |
99504dd4 VP |
1729 | if (r < 0) |
1730 | return r; | |
1731 | ||
63c372cb | 1732 | path = strjoina(config_path, "/" SPECIAL_DEFAULT_TARGET); |
16ed0233 | 1733 | |
718db961 | 1734 | r = create_symlink(i->path, path, force, changes, n_changes); |
99504dd4 VP |
1735 | if (r < 0) |
1736 | return r; | |
1737 | ||
1738 | return 0; | |
1739 | } | |
1740 | ||
1741 | int unit_file_get_default( | |
1742 | UnitFileScope scope, | |
1743 | const char *root_dir, | |
1744 | char **name) { | |
1745 | ||
1746 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; | |
1747 | char **p; | |
1748 | int r; | |
1749 | ||
16ed0233 LP |
1750 | assert(scope >= 0); |
1751 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
1752 | assert(name); | |
1753 | ||
12ed81d9 | 1754 | r = lookup_paths_init_from_scope(&paths, scope, root_dir); |
99504dd4 VP |
1755 | if (r < 0) |
1756 | return r; | |
1757 | ||
1758 | STRV_FOREACH(p, paths.unit_path) { | |
1759 | _cleanup_free_ char *path = NULL, *tmp = NULL; | |
97137ecc | 1760 | char *n; |
99504dd4 | 1761 | |
0c6ea3a4 | 1762 | path = path_join(root_dir, *p, SPECIAL_DEFAULT_TARGET); |
99504dd4 VP |
1763 | if (!path) |
1764 | return -ENOMEM; | |
1765 | ||
1766 | r = readlink_malloc(path, &tmp); | |
1767 | if (r == -ENOENT) | |
1768 | continue; | |
e8372f7e LP |
1769 | else if (r == -EINVAL) |
1770 | /* not a symlink */ | |
1771 | n = strdup(SPECIAL_DEFAULT_TARGET); | |
1772 | else if (r < 0) | |
99504dd4 | 1773 | return r; |
e8372f7e | 1774 | else |
2b6bf07d | 1775 | n = strdup(basename(tmp)); |
99504dd4 | 1776 | |
97137ecc | 1777 | if (!n) |
99504dd4 VP |
1778 | return -ENOMEM; |
1779 | ||
97137ecc | 1780 | *name = n; |
99504dd4 VP |
1781 | return 0; |
1782 | } | |
1783 | ||
1784 | return -ENOENT; | |
1785 | } | |
1786 | ||
a8ffe6fb | 1787 | UnitFileState unit_file_lookup_state( |
83096483 LP |
1788 | UnitFileScope scope, |
1789 | const char *root_dir, | |
a8ffe6fb | 1790 | const LookupPaths *paths, |
83096483 LP |
1791 | const char *name) { |
1792 | ||
83096483 | 1793 | UnitFileState state = _UNIT_FILE_STATE_INVALID; |
d9e5e694 | 1794 | char **i; |
7fd1b19b | 1795 | _cleanup_free_ char *path = NULL; |
a7f7d1bd | 1796 | int r = 0; |
83096483 | 1797 | |
a8ffe6fb | 1798 | assert(paths); |
83096483 | 1799 | |
7410616c | 1800 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
83096483 LP |
1801 | return -EINVAL; |
1802 | ||
a8ffe6fb | 1803 | STRV_FOREACH(i, paths->unit_path) { |
83096483 | 1804 | struct stat st; |
12ed81d9 | 1805 | char *partial; |
aedd4012 | 1806 | bool also = false; |
83096483 LP |
1807 | |
1808 | free(path); | |
0c6ea3a4 | 1809 | path = path_join(root_dir, *i, name); |
d9e5e694 ZJS |
1810 | if (!path) |
1811 | return -ENOMEM; | |
83096483 | 1812 | |
12ed81d9 | 1813 | if (root_dir) |
0c6ea3a4 | 1814 | partial = path + strlen(root_dir); |
12ed81d9 ZJS |
1815 | else |
1816 | partial = path; | |
1817 | ||
67820a0c MT |
1818 | /* |
1819 | * Search for a unit file in our default paths, to | |
1820 | * be sure, that there are no broken symlinks. | |
1821 | */ | |
83096483 | 1822 | if (lstat(path, &st) < 0) { |
81006b8a | 1823 | r = -errno; |
67820a0c MT |
1824 | if (errno != ENOENT) |
1825 | return r; | |
83096483 | 1826 | |
7410616c | 1827 | if (!unit_name_is_valid(name, UNIT_NAME_INSTANCE)) |
67820a0c MT |
1828 | continue; |
1829 | } else { | |
1830 | if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode)) | |
1831 | return -ENOENT; | |
1832 | ||
1833 | r = null_or_empty_path(path); | |
1834 | if (r < 0 && r != -ENOENT) | |
1835 | return r; | |
1836 | else if (r > 0) { | |
7410616c | 1837 | state = path_startswith(*i, "/run") ? UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED; |
67820a0c MT |
1838 | return state; |
1839 | } | |
83096483 LP |
1840 | } |
1841 | ||
1842 | r = find_symlinks_in_scope(scope, root_dir, name, &state); | |
d9e5e694 ZJS |
1843 | if (r < 0) |
1844 | return r; | |
1845 | else if (r > 0) | |
1846 | return state; | |
83096483 | 1847 | |
a8ffe6fb | 1848 | r = unit_file_can_install(paths, root_dir, partial, true, &also); |
bcb161b0 | 1849 | if (r < 0 && errno != ENOENT) |
d9e5e694 ZJS |
1850 | return r; |
1851 | else if (r > 0) | |
1852 | return UNIT_FILE_DISABLED; | |
aedd4012 JS |
1853 | else if (r == 0) { |
1854 | if (also) | |
1855 | return UNIT_FILE_INDIRECT; | |
d9e5e694 | 1856 | return UNIT_FILE_STATIC; |
aedd4012 | 1857 | } |
83096483 LP |
1858 | } |
1859 | ||
83096483 LP |
1860 | return r < 0 ? r : state; |
1861 | } | |
1862 | ||
a8ffe6fb ZJS |
1863 | UnitFileState unit_file_get_state( |
1864 | UnitFileScope scope, | |
1865 | const char *root_dir, | |
1866 | const char *name) { | |
1867 | ||
1868 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; | |
1869 | int r; | |
1870 | ||
1871 | assert(scope >= 0); | |
1872 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
1873 | assert(name); | |
1874 | ||
1875 | if (root_dir && scope != UNIT_FILE_SYSTEM) | |
1876 | return -EINVAL; | |
1877 | ||
1878 | r = lookup_paths_init_from_scope(&paths, scope, root_dir); | |
1879 | if (r < 0) | |
1880 | return r; | |
1881 | ||
1882 | return unit_file_lookup_state(scope, root_dir, &paths, name); | |
1883 | } | |
1884 | ||
c2a8d7b0 | 1885 | int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char *name) { |
7fd1b19b | 1886 | _cleanup_strv_free_ char **files = NULL; |
cba2ef02 | 1887 | char **p; |
83096483 LP |
1888 | int r; |
1889 | ||
1890 | assert(scope >= 0); | |
1891 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
1892 | assert(name); | |
1893 | ||
1894 | if (scope == UNIT_FILE_SYSTEM) | |
c2a8d7b0 | 1895 | r = conf_files_list(&files, ".preset", root_dir, |
a7480dba LP |
1896 | "/etc/systemd/system-preset", |
1897 | "/usr/local/lib/systemd/system-preset", | |
1898 | "/usr/lib/systemd/system-preset", | |
b4bdfefa | 1899 | #ifdef HAVE_SPLIT_USR |
a7480dba | 1900 | "/lib/systemd/system-preset", |
b4bdfefa | 1901 | #endif |
83096483 LP |
1902 | NULL); |
1903 | else if (scope == UNIT_FILE_GLOBAL) | |
c2a8d7b0 | 1904 | r = conf_files_list(&files, ".preset", root_dir, |
a7480dba LP |
1905 | "/etc/systemd/user-preset", |
1906 | "/usr/local/lib/systemd/user-preset", | |
1907 | "/usr/lib/systemd/user-preset", | |
83096483 LP |
1908 | NULL); |
1909 | else | |
1910 | return 1; | |
1911 | ||
1912 | if (r < 0) | |
1913 | return r; | |
1914 | ||
cba2ef02 | 1915 | STRV_FOREACH(p, files) { |
7fd1b19b | 1916 | _cleanup_fclose_ FILE *f; |
83096483 | 1917 | |
cba2ef02 | 1918 | f = fopen(*p, "re"); |
83096483 LP |
1919 | if (!f) { |
1920 | if (errno == ENOENT) | |
1921 | continue; | |
1922 | ||
d9e5e694 | 1923 | return -errno; |
83096483 LP |
1924 | } |
1925 | ||
1926 | for (;;) { | |
1927 | char line[LINE_MAX], *l; | |
1928 | ||
1929 | if (!fgets(line, sizeof(line), f)) | |
1930 | break; | |
1931 | ||
1932 | l = strstrip(line); | |
1933 | if (!*l) | |
1934 | continue; | |
1935 | ||
d3b6d0c2 | 1936 | if (strchr(COMMENTS "\n", *l)) |
83096483 LP |
1937 | continue; |
1938 | ||
1939 | if (first_word(l, "enable")) { | |
1940 | l += 6; | |
1941 | l += strspn(l, WHITESPACE); | |
1942 | ||
c2a8d7b0 LP |
1943 | if (fnmatch(l, name, FNM_NOESCAPE) == 0) { |
1944 | log_debug("Preset file says enable %s.", name); | |
d9e5e694 | 1945 | return 1; |
c2a8d7b0 | 1946 | } |
d9e5e694 | 1947 | |
83096483 LP |
1948 | } else if (first_word(l, "disable")) { |
1949 | l += 7; | |
1950 | l += strspn(l, WHITESPACE); | |
1951 | ||
c2a8d7b0 LP |
1952 | if (fnmatch(l, name, FNM_NOESCAPE) == 0) { |
1953 | log_debug("Preset file says disable %s.", name); | |
d9e5e694 | 1954 | return 0; |
c2a8d7b0 | 1955 | } |
d9e5e694 | 1956 | |
83096483 LP |
1957 | } else |
1958 | log_debug("Couldn't parse line '%s'", l); | |
1959 | } | |
83096483 LP |
1960 | } |
1961 | ||
1962 | /* Default is "enable" */ | |
c2a8d7b0 | 1963 | log_debug("Preset file doesn't say anything about %s, enabling.", name); |
d9e5e694 | 1964 | return 1; |
83096483 LP |
1965 | } |
1966 | ||
1967 | int unit_file_preset( | |
1968 | UnitFileScope scope, | |
1969 | bool runtime, | |
1970 | const char *root_dir, | |
7195aa42 | 1971 | char **files, |
d309c1c3 | 1972 | UnitFilePresetMode mode, |
83096483 LP |
1973 | bool force, |
1974 | UnitFileChange **changes, | |
1975 | unsigned *n_changes) { | |
1976 | ||
59ccf93d | 1977 | _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; |
da39f6a6 LP |
1978 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
1979 | _cleanup_free_ char *config_path = NULL; | |
1980 | char **i; | |
83096483 LP |
1981 | int r, q; |
1982 | ||
1983 | assert(scope >= 0); | |
1984 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
86bbe5bf | 1985 | assert(mode < _UNIT_FILE_PRESET_MAX); |
83096483 | 1986 | |
12ed81d9 | 1987 | r = lookup_paths_init_from_scope(&paths, scope, root_dir); |
83096483 LP |
1988 | if (r < 0) |
1989 | return r; | |
1990 | ||
1991 | r = get_config_path(scope, runtime, root_dir, &config_path); | |
1992 | if (r < 0) | |
d9e5e694 | 1993 | return r; |
83096483 LP |
1994 | |
1995 | STRV_FOREACH(i, files) { | |
1996 | ||
7410616c | 1997 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) |
d9e5e694 | 1998 | return -EINVAL; |
83096483 | 1999 | |
c2a8d7b0 | 2000 | r = unit_file_query_preset(scope, root_dir, *i); |
83096483 | 2001 | if (r < 0) |
d9e5e694 | 2002 | return r; |
83096483 | 2003 | |
d309c1c3 | 2004 | if (r && mode != UNIT_FILE_PRESET_DISABLE_ONLY) |
83096483 | 2005 | r = install_info_add_auto(&plus, *i); |
d309c1c3 | 2006 | else if (!r && mode != UNIT_FILE_PRESET_ENABLE_ONLY) |
83096483 | 2007 | r = install_info_add_auto(&minus, *i); |
d309c1c3 LP |
2008 | else |
2009 | r = 0; | |
83096483 | 2010 | if (r < 0) |
d9e5e694 | 2011 | return r; |
83096483 LP |
2012 | } |
2013 | ||
d309c1c3 | 2014 | r = 0; |
83096483 | 2015 | |
d309c1c3 LP |
2016 | if (mode != UNIT_FILE_PRESET_ENABLE_ONLY) { |
2017 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
83096483 | 2018 | |
d309c1c3 LP |
2019 | r = install_context_mark_for_removal(&minus, &paths, &remove_symlinks_to, config_path, root_dir); |
2020 | ||
2021 | q = remove_marked_symlinks(remove_symlinks_to, config_path, changes, n_changes, files); | |
2022 | if (r == 0) | |
2023 | r = q; | |
2024 | } | |
2025 | ||
2026 | if (mode != UNIT_FILE_PRESET_DISABLE_ONLY) { | |
2027 | /* Returns number of symlinks that where supposed to be installed. */ | |
2028 | q = install_context_apply(&plus, &paths, config_path, root_dir, force, changes, n_changes); | |
2029 | if (r == 0) | |
2030 | r = q; | |
2031 | } | |
2032 | ||
2033 | return r; | |
2034 | } | |
2035 | ||
2036 | int unit_file_preset_all( | |
2037 | UnitFileScope scope, | |
2038 | bool runtime, | |
2039 | const char *root_dir, | |
2040 | UnitFilePresetMode mode, | |
2041 | bool force, | |
2042 | UnitFileChange **changes, | |
2043 | unsigned *n_changes) { | |
2044 | ||
59ccf93d | 2045 | _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; |
d309c1c3 LP |
2046 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
2047 | _cleanup_free_ char *config_path = NULL; | |
2048 | char **i; | |
2049 | int r, q; | |
2050 | ||
2051 | assert(scope >= 0); | |
2052 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
86bbe5bf | 2053 | assert(mode < _UNIT_FILE_PRESET_MAX); |
d309c1c3 LP |
2054 | |
2055 | r = lookup_paths_init_from_scope(&paths, scope, root_dir); | |
2056 | if (r < 0) | |
2057 | return r; | |
2058 | ||
2059 | r = get_config_path(scope, runtime, root_dir, &config_path); | |
2060 | if (r < 0) | |
2061 | return r; | |
2062 | ||
2063 | STRV_FOREACH(i, paths.unit_path) { | |
2064 | _cleanup_closedir_ DIR *d = NULL; | |
0c6ea3a4 | 2065 | _cleanup_free_ char *units_dir; |
d309c1c3 | 2066 | |
0c6ea3a4 ZJS |
2067 | units_dir = path_join(root_dir, *i, NULL); |
2068 | if (!units_dir) | |
2069 | return -ENOMEM; | |
d309c1c3 LP |
2070 | |
2071 | d = opendir(units_dir); | |
2072 | if (!d) { | |
2073 | if (errno == ENOENT) | |
2074 | continue; | |
2075 | ||
2076 | return -errno; | |
2077 | } | |
2078 | ||
2079 | for (;;) { | |
2080 | struct dirent *de; | |
2081 | ||
2082 | errno = 0; | |
2083 | de = readdir(d); | |
2084 | if (!de && errno != 0) | |
2085 | return -errno; | |
2086 | ||
2087 | if (!de) | |
2088 | break; | |
2089 | ||
a34bf9db | 2090 | if (hidden_file(de->d_name)) |
d309c1c3 LP |
2091 | continue; |
2092 | ||
7410616c | 2093 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
d309c1c3 LP |
2094 | continue; |
2095 | ||
2096 | dirent_ensure_type(d, de); | |
2097 | ||
2098 | if (de->d_type != DT_REG) | |
2099 | continue; | |
2100 | ||
c2a8d7b0 | 2101 | r = unit_file_query_preset(scope, root_dir, de->d_name); |
d309c1c3 LP |
2102 | if (r < 0) |
2103 | return r; | |
2104 | ||
2105 | if (r && mode != UNIT_FILE_PRESET_DISABLE_ONLY) | |
2106 | r = install_info_add_auto(&plus, de->d_name); | |
2107 | else if (!r && mode != UNIT_FILE_PRESET_ENABLE_ONLY) | |
2108 | r = install_info_add_auto(&minus, de->d_name); | |
2109 | else | |
2110 | r = 0; | |
2111 | if (r < 0) | |
2112 | return r; | |
2113 | } | |
2114 | } | |
2115 | ||
2116 | r = 0; | |
2117 | ||
2118 | if (mode != UNIT_FILE_PRESET_ENABLE_ONLY) { | |
2119 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
2120 | ||
2121 | r = install_context_mark_for_removal(&minus, &paths, &remove_symlinks_to, config_path, root_dir); | |
2122 | ||
2123 | q = remove_marked_symlinks(remove_symlinks_to, config_path, changes, n_changes, NULL); | |
2124 | if (r == 0) | |
2125 | r = q; | |
2126 | } | |
2127 | ||
2128 | if (mode != UNIT_FILE_PRESET_DISABLE_ONLY) { | |
2129 | q = install_context_apply(&plus, &paths, config_path, root_dir, force, changes, n_changes); | |
2130 | if (r == 0) | |
2131 | r = q; | |
2132 | } | |
83096483 | 2133 | |
83096483 LP |
2134 | return r; |
2135 | } | |
2136 | ||
59ccf93d LP |
2137 | static void unit_file_list_free_one(UnitFileList *f) { |
2138 | if (!f) | |
d9e5e694 ZJS |
2139 | return; |
2140 | ||
59ccf93d LP |
2141 | free(f->path); |
2142 | free(f); | |
d9e5e694 | 2143 | } |
59ccf93d LP |
2144 | |
2145 | DEFINE_TRIVIAL_CLEANUP_FUNC(UnitFileList*, unit_file_list_free_one); | |
d9e5e694 | 2146 | |
83096483 LP |
2147 | int unit_file_get_list( |
2148 | UnitFileScope scope, | |
2149 | const char *root_dir, | |
2150 | Hashmap *h) { | |
2151 | ||
7fd1b19b | 2152 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
d9e5e694 | 2153 | char **i; |
83096483 LP |
2154 | int r; |
2155 | ||
2156 | assert(scope >= 0); | |
2157 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2158 | assert(h); | |
2159 | ||
83096483 LP |
2160 | if (root_dir && scope != UNIT_FILE_SYSTEM) |
2161 | return -EINVAL; | |
2162 | ||
fdbdf6ec LN |
2163 | if (root_dir) { |
2164 | r = access(root_dir, F_OK); | |
2165 | if (r < 0) | |
2166 | return -errno; | |
2167 | } | |
2168 | ||
12ed81d9 | 2169 | r = lookup_paths_init_from_scope(&paths, scope, root_dir); |
83096483 LP |
2170 | if (r < 0) |
2171 | return r; | |
2172 | ||
2173 | STRV_FOREACH(i, paths.unit_path) { | |
da39f6a6 | 2174 | _cleanup_closedir_ DIR *d = NULL; |
0c6ea3a4 | 2175 | _cleanup_free_ char *units_dir; |
83096483 | 2176 | |
0c6ea3a4 ZJS |
2177 | units_dir = path_join(root_dir, *i, NULL); |
2178 | if (!units_dir) | |
2179 | return -ENOMEM; | |
83096483 | 2180 | |
83096483 LP |
2181 | d = opendir(units_dir); |
2182 | if (!d) { | |
2183 | if (errno == ENOENT) | |
2184 | continue; | |
2185 | ||
d9e5e694 | 2186 | return -errno; |
83096483 LP |
2187 | } |
2188 | ||
2189 | for (;;) { | |
59ccf93d | 2190 | _cleanup_(unit_file_list_free_onep) UnitFileList *f = NULL; |
d309c1c3 | 2191 | struct dirent *de; |
81fc054d | 2192 | _cleanup_free_ char *path = NULL; |
83096483 | 2193 | |
4d993c8c FW |
2194 | errno = 0; |
2195 | de = readdir(d); | |
2196 | if (!de && errno != 0) | |
2197 | return -errno; | |
83096483 LP |
2198 | |
2199 | if (!de) | |
2200 | break; | |
2201 | ||
a34bf9db | 2202 | if (hidden_file(de->d_name)) |
83096483 LP |
2203 | continue; |
2204 | ||
7410616c | 2205 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
83096483 LP |
2206 | continue; |
2207 | ||
2208 | if (hashmap_get(h, de->d_name)) | |
2209 | continue; | |
2210 | ||
da39f6a6 | 2211 | dirent_ensure_type(d, de); |
83096483 | 2212 | |
da39f6a6 | 2213 | if (!IN_SET(de->d_type, DT_LNK, DT_REG)) |
83096483 LP |
2214 | continue; |
2215 | ||
2216 | f = new0(UnitFileList, 1); | |
d9e5e694 ZJS |
2217 | if (!f) |
2218 | return -ENOMEM; | |
83096483 | 2219 | |
4fc13f52 | 2220 | f->path = path_make_absolute(de->d_name, units_dir); |
d9e5e694 ZJS |
2221 | if (!f->path) |
2222 | return -ENOMEM; | |
83096483 LP |
2223 | |
2224 | r = null_or_empty_path(f->path); | |
d9e5e694 ZJS |
2225 | if (r < 0 && r != -ENOENT) |
2226 | return r; | |
2227 | else if (r > 0) { | |
83096483 LP |
2228 | f->state = |
2229 | path_startswith(*i, "/run") ? | |
2230 | UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED; | |
2231 | goto found; | |
2232 | } | |
2233 | ||
2234 | r = find_symlinks_in_scope(scope, root_dir, de->d_name, &f->state); | |
d9e5e694 ZJS |
2235 | if (r < 0) |
2236 | return r; | |
2237 | else if (r > 0) { | |
b5b46d59 | 2238 | f->state = UNIT_FILE_ENABLED; |
83096483 | 2239 | goto found; |
b5b46d59 | 2240 | } |
83096483 | 2241 | |
81fc054d LN |
2242 | path = path_make_absolute(de->d_name, *i); |
2243 | if (!path) | |
2244 | return -ENOMEM; | |
2245 | ||
aedd4012 | 2246 | r = unit_file_can_install(&paths, root_dir, path, true, NULL); |
b5b46d59 LP |
2247 | if (r == -EINVAL || /* Invalid setting? */ |
2248 | r == -EBADMSG || /* Invalid format? */ | |
2249 | r == -ENOENT /* Included file not found? */) | |
2250 | f->state = UNIT_FILE_INVALID; | |
d9e5e694 ZJS |
2251 | else if (r < 0) |
2252 | return r; | |
2253 | else if (r > 0) | |
83096483 | 2254 | f->state = UNIT_FILE_DISABLED; |
b5b46d59 | 2255 | else |
83096483 | 2256 | f->state = UNIT_FILE_STATIC; |
83096483 LP |
2257 | |
2258 | found: | |
2b6bf07d | 2259 | r = hashmap_put(h, basename(f->path), f); |
d9e5e694 ZJS |
2260 | if (r < 0) |
2261 | return r; | |
2262 | f = NULL; /* prevent cleanup */ | |
83096483 LP |
2263 | } |
2264 | } | |
2265 | ||
83096483 LP |
2266 | return r; |
2267 | } | |
2268 | ||
2269 | static const char* const unit_file_state_table[_UNIT_FILE_STATE_MAX] = { | |
2270 | [UNIT_FILE_ENABLED] = "enabled", | |
771faa9a | 2271 | [UNIT_FILE_ENABLED_RUNTIME] = "enabled-runtime", |
83096483 LP |
2272 | [UNIT_FILE_LINKED] = "linked", |
2273 | [UNIT_FILE_LINKED_RUNTIME] = "linked-runtime", | |
2274 | [UNIT_FILE_MASKED] = "masked", | |
2275 | [UNIT_FILE_MASKED_RUNTIME] = "masked-runtime", | |
2276 | [UNIT_FILE_STATIC] = "static", | |
b5b46d59 | 2277 | [UNIT_FILE_DISABLED] = "disabled", |
aedd4012 | 2278 | [UNIT_FILE_INDIRECT] = "indirect", |
b5b46d59 | 2279 | [UNIT_FILE_INVALID] = "invalid", |
83096483 LP |
2280 | }; |
2281 | ||
2282 | DEFINE_STRING_TABLE_LOOKUP(unit_file_state, UnitFileState); | |
c0576cd6 LP |
2283 | |
2284 | static const char* const unit_file_change_type_table[_UNIT_FILE_CHANGE_TYPE_MAX] = { | |
2285 | [UNIT_FILE_SYMLINK] = "symlink", | |
2286 | [UNIT_FILE_UNLINK] = "unlink", | |
2287 | }; | |
2288 | ||
2289 | DEFINE_STRING_TABLE_LOOKUP(unit_file_change_type, UnitFileChangeType); | |
d309c1c3 | 2290 | |
86bbe5bf | 2291 | static const char* const unit_file_preset_mode_table[_UNIT_FILE_PRESET_MAX] = { |
d309c1c3 LP |
2292 | [UNIT_FILE_PRESET_FULL] = "full", |
2293 | [UNIT_FILE_PRESET_ENABLE_ONLY] = "enable-only", | |
2294 | [UNIT_FILE_PRESET_DISABLE_ONLY] = "disable-only", | |
2295 | }; | |
2296 | ||
2297 | DEFINE_STRING_TABLE_LOOKUP(unit_file_preset_mode, UnitFilePresetMode); |