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Commit | Line | Data |
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83096483 LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2011 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
83096483 LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty <of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
83096483 | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
83096483 LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
a8fbdf54 | 20 | #include <dirent.h> |
83096483 LP |
21 | #include <errno.h> |
22 | #include <fcntl.h> | |
83096483 | 23 | #include <fnmatch.h> |
a8fbdf54 TA |
24 | #include <limits.h> |
25 | #include <stddef.h> | |
26 | #include <stdio.h> | |
27 | #include <stdlib.h> | |
07630cea | 28 | #include <string.h> |
a8fbdf54 | 29 | #include <sys/stat.h> |
07630cea | 30 | #include <unistd.h> |
83096483 | 31 | |
b5efdb8a | 32 | #include "alloc-util.h" |
07630cea LP |
33 | #include "conf-files.h" |
34 | #include "conf-parser.h" | |
a0956174 | 35 | #include "dirent-util.h" |
a8fbdf54 | 36 | #include "extract-word.h" |
a0956174 | 37 | #include "fd-util.h" |
0ec0deaa | 38 | #include "fileio.h" |
f4f15635 | 39 | #include "fs-util.h" |
83096483 | 40 | #include "hashmap.h" |
07630cea | 41 | #include "install-printf.h" |
a0956174 | 42 | #include "install.h" |
a8fbdf54 TA |
43 | #include "log.h" |
44 | #include "macro.h" | |
07630cea | 45 | #include "mkdir.h" |
83096483 | 46 | #include "path-lookup.h" |
07630cea | 47 | #include "path-util.h" |
344ca755 | 48 | #include "rm-rf.h" |
07630cea LP |
49 | #include "set.h" |
50 | #include "special.h" | |
8fcde012 | 51 | #include "stat-util.h" |
8b43440b | 52 | #include "string-table.h" |
07630cea | 53 | #include "string-util.h" |
83096483 LP |
54 | #include "strv.h" |
55 | #include "unit-name.h" | |
83096483 | 56 | |
0ec0deaa LP |
57 | #define UNIT_FILE_FOLLOW_SYMLINK_MAX 64 |
58 | ||
59 | typedef enum SearchFlags { | |
60 | SEARCH_LOAD = 1, | |
61 | SEARCH_FOLLOW_CONFIG_SYMLINKS = 2, | |
62 | } SearchFlags; | |
63 | ||
83096483 | 64 | typedef struct { |
0ec0deaa LP |
65 | OrderedHashmap *will_process; |
66 | OrderedHashmap *have_processed; | |
83096483 LP |
67 | } InstallContext; |
68 | ||
2c52204c LP |
69 | static int unit_file_lookup_state(UnitFileScope scope, const LookupPaths *paths, const char *name, UnitFileState *ret); |
70 | ||
32c0ed7b | 71 | static int in_search_path(const LookupPaths *p, const char *path) { |
8f294b45 | 72 | _cleanup_free_ char *parent = NULL; |
0ec0deaa | 73 | char **i; |
8f294b45 LP |
74 | |
75 | assert(path); | |
76 | ||
5f311f8c LP |
77 | parent = dirname_malloc(path); |
78 | if (!parent) | |
79 | return -ENOMEM; | |
8f294b45 | 80 | |
32c0ed7b | 81 | STRV_FOREACH(i, p->search_path) |
0ec0deaa LP |
82 | if (path_equal(parent, *i)) |
83 | return true; | |
84 | ||
85 | return false; | |
8f294b45 LP |
86 | } |
87 | ||
401017e0 | 88 | static const char* skip_root(const LookupPaths *p, const char *path) { |
8f9364f9 | 89 | char *e; |
401017e0 | 90 | |
8f9364f9 LP |
91 | assert(p); |
92 | assert(path); | |
401017e0 | 93 | |
8f9364f9 LP |
94 | if (!p->root_dir) |
95 | return path; | |
401017e0 | 96 | |
8f9364f9 LP |
97 | e = path_startswith(path, p->root_dir); |
98 | if (!e) | |
99 | return NULL; | |
100 | ||
101 | /* Make sure the returned path starts with a slash */ | |
102 | if (e[0] != '/') { | |
103 | if (e == path || e[-1] != '/') | |
104 | return NULL; | |
401017e0 | 105 | |
8f9364f9 | 106 | e--; |
401017e0 LP |
107 | } |
108 | ||
8f9364f9 | 109 | return e; |
401017e0 LP |
110 | } |
111 | ||
f4dc1e65 | 112 | static int path_is_generator(const LookupPaths *p, const char *path) { |
f4139308 LP |
113 | _cleanup_free_ char *parent = NULL; |
114 | ||
e1c5c2b0 | 115 | assert(p); |
f4139308 LP |
116 | assert(path); |
117 | ||
118 | parent = dirname_malloc(path); | |
119 | if (!parent) | |
120 | return -ENOMEM; | |
121 | ||
24737c29 ZJS |
122 | return path_equal_ptr(parent, p->generator) || |
123 | path_equal_ptr(parent, p->generator_early) || | |
124 | path_equal_ptr(parent, p->generator_late); | |
f4139308 LP |
125 | } |
126 | ||
e4fca67f LP |
127 | static int path_is_transient(const LookupPaths *p, const char *path) { |
128 | _cleanup_free_ char *parent = NULL; | |
129 | ||
130 | assert(p); | |
131 | assert(path); | |
132 | ||
133 | parent = dirname_malloc(path); | |
134 | if (!parent) | |
135 | return -ENOMEM; | |
136 | ||
24737c29 | 137 | return path_equal_ptr(parent, p->transient); |
e4fca67f LP |
138 | } |
139 | ||
344ca755 | 140 | static int path_is_control(const LookupPaths *p, const char *path) { |
e1c5c2b0 | 141 | _cleanup_free_ char *parent = NULL; |
0ec0deaa | 142 | |
e1c5c2b0 | 143 | assert(p); |
0ec0deaa LP |
144 | assert(path); |
145 | ||
344ca755 LP |
146 | parent = dirname_malloc(path); |
147 | if (!parent) | |
148 | return -ENOMEM; | |
0ec0deaa | 149 | |
24737c29 ZJS |
150 | return path_equal_ptr(parent, p->persistent_control) || |
151 | path_equal_ptr(parent, p->runtime_control); | |
344ca755 LP |
152 | } |
153 | ||
154 | static int path_is_config(const LookupPaths *p, const char *path) { | |
155 | _cleanup_free_ char *parent = NULL; | |
156 | ||
157 | assert(p); | |
158 | assert(path); | |
159 | ||
160 | /* Note that we do *not* have generic checks for /etc or /run in place, since with them we couldn't discern | |
161 | * configuration from transient or generated units */ | |
0ec0deaa | 162 | |
e1c5c2b0 LP |
163 | parent = dirname_malloc(path); |
164 | if (!parent) | |
165 | return -ENOMEM; | |
0ec0deaa | 166 | |
24737c29 ZJS |
167 | return path_equal_ptr(parent, p->persistent_config) || |
168 | path_equal_ptr(parent, p->runtime_config); | |
0ec0deaa LP |
169 | } |
170 | ||
385eb996 LP |
171 | static int path_is_runtime(const LookupPaths *p, const char *path) { |
172 | _cleanup_free_ char *parent = NULL; | |
401017e0 | 173 | const char *rpath; |
385eb996 LP |
174 | |
175 | assert(p); | |
176 | assert(path); | |
177 | ||
344ca755 LP |
178 | /* Everything in /run is considered runtime. On top of that we also add explicit checks for the various runtime |
179 | * directories, as safety net. */ | |
180 | ||
401017e0 LP |
181 | rpath = skip_root(p, path); |
182 | if (rpath && path_startswith(rpath, "/run")) | |
385eb996 LP |
183 | return true; |
184 | ||
185 | parent = dirname_malloc(path); | |
186 | if (!parent) | |
187 | return -ENOMEM; | |
188 | ||
24737c29 ZJS |
189 | return path_equal_ptr(parent, p->runtime_config) || |
190 | path_equal_ptr(parent, p->generator) || | |
191 | path_equal_ptr(parent, p->generator_early) || | |
192 | path_equal_ptr(parent, p->generator_late) || | |
193 | path_equal_ptr(parent, p->transient) || | |
194 | path_equal_ptr(parent, p->runtime_control); | |
344ca755 LP |
195 | } |
196 | ||
197 | static int path_is_vendor(const LookupPaths *p, const char *path) { | |
198 | const char *rpath; | |
199 | ||
200 | assert(p); | |
201 | assert(path); | |
202 | ||
203 | rpath = skip_root(p, path); | |
204 | if (!rpath) | |
205 | return 0; | |
206 | ||
207 | if (path_startswith(rpath, "/usr")) | |
208 | return true; | |
209 | ||
210 | #ifdef HAVE_SPLIT_USR | |
211 | if (path_startswith(rpath, "/lib")) | |
212 | return true; | |
213 | #endif | |
214 | ||
215 | return path_equal(rpath, SYSTEM_DATA_UNIT_PATH); | |
385eb996 LP |
216 | } |
217 | ||
0ec0deaa LP |
218 | int unit_file_changes_add( |
219 | UnitFileChange **changes, | |
220 | unsigned *n_changes, | |
221 | UnitFileChangeType type, | |
222 | const char *path, | |
223 | const char *source) { | |
224 | ||
225 | UnitFileChange *c; | |
226 | unsigned i; | |
227 | ||
228 | assert(path); | |
229 | assert(!changes == !n_changes); | |
230 | ||
231 | if (!changes) | |
232 | return 0; | |
233 | ||
234 | c = realloc(*changes, (*n_changes + 1) * sizeof(UnitFileChange)); | |
235 | if (!c) | |
236 | return -ENOMEM; | |
237 | ||
238 | *changes = c; | |
239 | i = *n_changes; | |
240 | ||
241 | c[i].type = type; | |
242 | c[i].path = strdup(path); | |
243 | if (!c[i].path) | |
244 | return -ENOMEM; | |
245 | ||
246 | path_kill_slashes(c[i].path); | |
247 | ||
248 | if (source) { | |
249 | c[i].source = strdup(source); | |
250 | if (!c[i].source) { | |
251 | free(c[i].path); | |
252 | return -ENOMEM; | |
253 | } | |
254 | ||
255 | path_kill_slashes(c[i].path); | |
256 | } else | |
257 | c[i].source = NULL; | |
258 | ||
259 | *n_changes = i+1; | |
260 | return 0; | |
261 | } | |
262 | ||
263 | void unit_file_changes_free(UnitFileChange *changes, unsigned n_changes) { | |
264 | unsigned i; | |
265 | ||
266 | assert(changes || n_changes == 0); | |
267 | ||
268 | if (!changes) | |
269 | return; | |
270 | ||
271 | for (i = 0; i < n_changes; i++) { | |
272 | free(changes[i].path); | |
273 | free(changes[i].source); | |
274 | } | |
275 | ||
276 | free(changes); | |
277 | } | |
278 | ||
279 | static int create_symlink( | |
280 | const char *old_path, | |
281 | const char *new_path, | |
282 | bool force, | |
283 | UnitFileChange **changes, | |
284 | unsigned *n_changes) { | |
285 | ||
286 | _cleanup_free_ char *dest = NULL; | |
287 | int r; | |
288 | ||
289 | assert(old_path); | |
290 | assert(new_path); | |
291 | ||
292 | /* Actually create a symlink, and remember that we did. Is | |
293 | * smart enough to check if there's already a valid symlink in | |
294 | * place. */ | |
295 | ||
296 | mkdir_parents_label(new_path, 0755); | |
297 | ||
298 | if (symlink(old_path, new_path) >= 0) { | |
299 | unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path); | |
3de15214 | 300 | return 1; |
0ec0deaa LP |
301 | } |
302 | ||
303 | if (errno != EEXIST) | |
304 | return -errno; | |
305 | ||
306 | r = readlink_malloc(new_path, &dest); | |
307 | if (r < 0) | |
308 | return r; | |
309 | ||
310 | if (path_equal(dest, old_path)) | |
311 | return 0; | |
312 | ||
313 | if (!force) | |
314 | return -EEXIST; | |
315 | ||
316 | r = symlink_atomic(old_path, new_path); | |
317 | if (r < 0) | |
318 | return r; | |
319 | ||
320 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, new_path, NULL); | |
321 | unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path); | |
322 | ||
3de15214 | 323 | return 1; |
0ec0deaa LP |
324 | } |
325 | ||
83096483 LP |
326 | static int mark_symlink_for_removal( |
327 | Set **remove_symlinks_to, | |
328 | const char *p) { | |
329 | ||
330 | char *n; | |
331 | int r; | |
332 | ||
333 | assert(p); | |
334 | ||
d5099efc | 335 | r = set_ensure_allocated(remove_symlinks_to, &string_hash_ops); |
83096483 LP |
336 | if (r < 0) |
337 | return r; | |
338 | ||
339 | n = strdup(p); | |
340 | if (!n) | |
341 | return -ENOMEM; | |
342 | ||
343 | path_kill_slashes(n); | |
344 | ||
ef42202a | 345 | r = set_consume(*remove_symlinks_to, n); |
d25e100b LP |
346 | if (r == -EEXIST) |
347 | return 0; | |
ef42202a | 348 | if (r < 0) |
d25e100b | 349 | return r; |
83096483 | 350 | |
0ec0deaa | 351 | return 1; |
83096483 LP |
352 | } |
353 | ||
354 | static int remove_marked_symlinks_fd( | |
355 | Set *remove_symlinks_to, | |
356 | int fd, | |
357 | const char *path, | |
358 | const char *config_path, | |
401017e0 | 359 | const LookupPaths *lp, |
0ec0deaa | 360 | bool *restart, |
83096483 | 361 | UnitFileChange **changes, |
0ec0deaa | 362 | unsigned *n_changes) { |
83096483 | 363 | |
7fd1b19b | 364 | _cleanup_closedir_ DIR *d = NULL; |
d25e100b | 365 | struct dirent *de; |
bcafe923 | 366 | int r = 0; |
83096483 LP |
367 | |
368 | assert(remove_symlinks_to); | |
369 | assert(fd >= 0); | |
370 | assert(path); | |
371 | assert(config_path); | |
401017e0 | 372 | assert(lp); |
0ec0deaa | 373 | assert(restart); |
83096483 LP |
374 | |
375 | d = fdopendir(fd); | |
376 | if (!d) { | |
03e334a1 | 377 | safe_close(fd); |
83096483 LP |
378 | return -errno; |
379 | } | |
380 | ||
381 | rewinddir(d); | |
382 | ||
d25e100b | 383 | FOREACH_DIRENT(de, d, return -errno) { |
83096483 LP |
384 | |
385 | dirent_ensure_type(d, de); | |
386 | ||
387 | if (de->d_type == DT_DIR) { | |
7fd1b19b | 388 | _cleanup_free_ char *p = NULL; |
d25e100b | 389 | int nfd, q; |
83096483 LP |
390 | |
391 | nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
392 | if (nfd < 0) { | |
393 | if (errno == ENOENT) | |
394 | continue; | |
395 | ||
396 | if (r == 0) | |
397 | r = -errno; | |
398 | continue; | |
399 | } | |
400 | ||
401 | p = path_make_absolute(de->d_name, path); | |
402 | if (!p) { | |
03e334a1 | 403 | safe_close(nfd); |
d9e5e694 | 404 | return -ENOMEM; |
83096483 LP |
405 | } |
406 | ||
407 | /* This will close nfd, regardless whether it succeeds or not */ | |
401017e0 | 408 | q = remove_marked_symlinks_fd(remove_symlinks_to, nfd, p, config_path, lp, restart, changes, n_changes); |
bcafe923 | 409 | if (q < 0 && r == 0) |
83096483 LP |
410 | r = q; |
411 | ||
412 | } else if (de->d_type == DT_LNK) { | |
7fd1b19b | 413 | _cleanup_free_ char *p = NULL, *dest = NULL; |
401017e0 | 414 | const char *rp; |
83096483 | 415 | bool found; |
0ec0deaa | 416 | int q; |
83096483 | 417 | |
7410616c | 418 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
bcafe923 LP |
419 | continue; |
420 | ||
83096483 | 421 | p = path_make_absolute(de->d_name, path); |
d9e5e694 ZJS |
422 | if (!p) |
423 | return -ENOMEM; | |
83096483 | 424 | |
0ec0deaa | 425 | q = readlink_malloc(p, &dest); |
401017e0 LP |
426 | if (q == -ENOENT) |
427 | continue; | |
83096483 | 428 | if (q < 0) { |
83096483 LP |
429 | if (r == 0) |
430 | r = q; | |
431 | continue; | |
432 | } | |
433 | ||
401017e0 LP |
434 | /* We remove all links pointing to a file or path that is marked, as well as all files sharing |
435 | * the same name as a file that is marked. */ | |
0ec0deaa | 436 | |
596fc263 | 437 | found = set_contains(remove_symlinks_to, dest) || |
0ec0deaa LP |
438 | set_contains(remove_symlinks_to, basename(dest)) || |
439 | set_contains(remove_symlinks_to, de->d_name); | |
83096483 | 440 | |
1dacfd2a LP |
441 | if (!found) |
442 | continue; | |
83096483 | 443 | |
401017e0 | 444 | if (unlinkat(fd, de->d_name, 0) < 0 && errno != ENOENT) { |
1dacfd2a LP |
445 | if (r == 0) |
446 | r = -errno; | |
447 | continue; | |
448 | } | |
bcafe923 | 449 | |
1dacfd2a | 450 | path_kill_slashes(p); |
0ec0deaa | 451 | (void) rmdir_parents(p, config_path); |
83096483 | 452 | |
0ec0deaa | 453 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, p, NULL); |
1dacfd2a | 454 | |
401017e0 LP |
455 | /* Now, remember the full path (but with the root prefix removed) of the symlink we just |
456 | * removed, and remove any symlinks to it, too */ | |
457 | ||
458 | rp = skip_root(lp, p); | |
459 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: p); | |
0ec0deaa LP |
460 | if (q < 0) |
461 | return q; | |
462 | if (q > 0) | |
463 | *restart = true; | |
83096483 LP |
464 | } |
465 | } | |
466 | ||
83096483 LP |
467 | return r; |
468 | } | |
469 | ||
470 | static int remove_marked_symlinks( | |
471 | Set *remove_symlinks_to, | |
472 | const char *config_path, | |
401017e0 | 473 | const LookupPaths *lp, |
83096483 | 474 | UnitFileChange **changes, |
0ec0deaa | 475 | unsigned *n_changes) { |
83096483 | 476 | |
da39f6a6 | 477 | _cleanup_close_ int fd = -1; |
0ec0deaa | 478 | bool restart; |
d25e100b | 479 | int r = 0; |
83096483 LP |
480 | |
481 | assert(config_path); | |
401017e0 | 482 | assert(lp); |
83096483 LP |
483 | |
484 | if (set_size(remove_symlinks_to) <= 0) | |
485 | return 0; | |
486 | ||
487 | fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
488 | if (fd < 0) | |
489 | return -errno; | |
490 | ||
491 | do { | |
492 | int q, cfd; | |
0ec0deaa | 493 | restart = false; |
83096483 | 494 | |
ead34950 | 495 | cfd = fcntl(fd, F_DUPFD_CLOEXEC, 3); |
d25e100b LP |
496 | if (cfd < 0) |
497 | return -errno; | |
83096483 LP |
498 | |
499 | /* This takes possession of cfd and closes it */ | |
401017e0 | 500 | q = remove_marked_symlinks_fd(remove_symlinks_to, cfd, config_path, config_path, lp, &restart, changes, n_changes); |
83096483 LP |
501 | if (r == 0) |
502 | r = q; | |
0ec0deaa | 503 | } while (restart); |
83096483 | 504 | |
83096483 LP |
505 | return r; |
506 | } | |
507 | ||
508 | static int find_symlinks_fd( | |
0ec0deaa | 509 | const char *root_dir, |
83096483 LP |
510 | const char *name, |
511 | int fd, | |
512 | const char *path, | |
513 | const char *config_path, | |
401017e0 | 514 | const LookupPaths *lp, |
83096483 LP |
515 | bool *same_name_link) { |
516 | ||
7fd1b19b | 517 | _cleanup_closedir_ DIR *d = NULL; |
d25e100b LP |
518 | struct dirent *de; |
519 | int r = 0; | |
83096483 LP |
520 | |
521 | assert(name); | |
522 | assert(fd >= 0); | |
523 | assert(path); | |
524 | assert(config_path); | |
401017e0 | 525 | assert(lp); |
83096483 LP |
526 | assert(same_name_link); |
527 | ||
528 | d = fdopendir(fd); | |
529 | if (!d) { | |
03e334a1 | 530 | safe_close(fd); |
83096483 LP |
531 | return -errno; |
532 | } | |
533 | ||
d25e100b | 534 | FOREACH_DIRENT(de, d, return -errno) { |
83096483 LP |
535 | |
536 | dirent_ensure_type(d, de); | |
537 | ||
538 | if (de->d_type == DT_DIR) { | |
7fd1b19b | 539 | _cleanup_free_ char *p = NULL; |
d25e100b | 540 | int nfd, q; |
83096483 LP |
541 | |
542 | nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
543 | if (nfd < 0) { | |
544 | if (errno == ENOENT) | |
545 | continue; | |
546 | ||
547 | if (r == 0) | |
548 | r = -errno; | |
549 | continue; | |
550 | } | |
551 | ||
552 | p = path_make_absolute(de->d_name, path); | |
553 | if (!p) { | |
03e334a1 | 554 | safe_close(nfd); |
ea55addc | 555 | return -ENOMEM; |
83096483 LP |
556 | } |
557 | ||
558 | /* This will close nfd, regardless whether it succeeds or not */ | |
401017e0 | 559 | q = find_symlinks_fd(root_dir, name, nfd, p, config_path, lp, same_name_link); |
ea55addc ZJS |
560 | if (q > 0) |
561 | return 1; | |
83096483 LP |
562 | if (r == 0) |
563 | r = q; | |
564 | ||
565 | } else if (de->d_type == DT_LNK) { | |
7fd1b19b | 566 | _cleanup_free_ char *p = NULL, *dest = NULL; |
83096483 LP |
567 | bool found_path, found_dest, b = false; |
568 | int q; | |
569 | ||
570 | /* Acquire symlink name */ | |
571 | p = path_make_absolute(de->d_name, path); | |
ea55addc ZJS |
572 | if (!p) |
573 | return -ENOMEM; | |
83096483 LP |
574 | |
575 | /* Acquire symlink destination */ | |
0ec0deaa | 576 | q = readlink_malloc(p, &dest); |
d25e100b LP |
577 | if (q == -ENOENT) |
578 | continue; | |
83096483 | 579 | if (q < 0) { |
83096483 LP |
580 | if (r == 0) |
581 | r = q; | |
582 | continue; | |
583 | } | |
584 | ||
0ec0deaa LP |
585 | /* Make absolute */ |
586 | if (!path_is_absolute(dest)) { | |
587 | char *x; | |
588 | ||
589 | x = prefix_root(root_dir, dest); | |
590 | if (!x) | |
591 | return -ENOMEM; | |
592 | ||
593 | free(dest); | |
594 | dest = x; | |
595 | } | |
596 | ||
83096483 LP |
597 | /* Check if the symlink itself matches what we |
598 | * are looking for */ | |
599 | if (path_is_absolute(name)) | |
600 | found_path = path_equal(p, name); | |
601 | else | |
602 | found_path = streq(de->d_name, name); | |
603 | ||
604 | /* Check if what the symlink points to | |
605 | * matches what we are looking for */ | |
606 | if (path_is_absolute(name)) | |
607 | found_dest = path_equal(dest, name); | |
608 | else | |
2b6bf07d | 609 | found_dest = streq(basename(dest), name); |
83096483 | 610 | |
83096483 | 611 | if (found_path && found_dest) { |
7fd1b19b | 612 | _cleanup_free_ char *t = NULL; |
83096483 LP |
613 | |
614 | /* Filter out same name links in the main | |
615 | * config path */ | |
616 | t = path_make_absolute(name, config_path); | |
ea55addc ZJS |
617 | if (!t) |
618 | return -ENOMEM; | |
83096483 LP |
619 | |
620 | b = path_equal(t, p); | |
83096483 LP |
621 | } |
622 | ||
83096483 LP |
623 | if (b) |
624 | *same_name_link = true; | |
ea55addc ZJS |
625 | else if (found_path || found_dest) |
626 | return 1; | |
83096483 LP |
627 | } |
628 | } | |
d25e100b LP |
629 | |
630 | return r; | |
83096483 LP |
631 | } |
632 | ||
633 | static int find_symlinks( | |
0ec0deaa | 634 | const char *root_dir, |
83096483 LP |
635 | const char *name, |
636 | const char *config_path, | |
401017e0 | 637 | const LookupPaths *lp, |
83096483 LP |
638 | bool *same_name_link) { |
639 | ||
640 | int fd; | |
641 | ||
642 | assert(name); | |
643 | assert(config_path); | |
644 | assert(same_name_link); | |
645 | ||
646 | fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
d5891fda ZJS |
647 | if (fd < 0) { |
648 | if (errno == ENOENT) | |
649 | return 0; | |
83096483 | 650 | return -errno; |
d5891fda | 651 | } |
83096483 LP |
652 | |
653 | /* This takes possession of fd and closes it */ | |
401017e0 | 654 | return find_symlinks_fd(root_dir, name, fd, config_path, config_path, lp, same_name_link); |
83096483 LP |
655 | } |
656 | ||
657 | static int find_symlinks_in_scope( | |
658 | UnitFileScope scope, | |
e1c5c2b0 | 659 | const LookupPaths *paths, |
83096483 LP |
660 | const char *name, |
661 | UnitFileState *state) { | |
662 | ||
83096483 | 663 | bool same_name_link_runtime = false, same_name_link = false; |
0ec0deaa | 664 | int r; |
83096483 LP |
665 | |
666 | assert(scope >= 0); | |
667 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
e1c5c2b0 | 668 | assert(paths); |
83096483 LP |
669 | assert(name); |
670 | ||
e1c5c2b0 | 671 | /* First look in the persistent config path */ |
401017e0 | 672 | r = find_symlinks(paths->root_dir, name, paths->persistent_config, paths, &same_name_link); |
718880ba SA |
673 | if (r < 0) |
674 | return r; | |
0ec0deaa LP |
675 | if (r > 0) { |
676 | *state = UNIT_FILE_ENABLED; | |
718880ba | 677 | return r; |
83096483 LP |
678 | } |
679 | ||
0ec0deaa | 680 | /* Then look in runtime config path */ |
401017e0 | 681 | r = find_symlinks(paths->root_dir, name, paths->runtime_config, paths, &same_name_link_runtime); |
83096483 LP |
682 | if (r < 0) |
683 | return r; | |
0ec0deaa LP |
684 | if (r > 0) { |
685 | *state = UNIT_FILE_ENABLED_RUNTIME; | |
83096483 LP |
686 | return r; |
687 | } | |
688 | ||
689 | /* Hmm, we didn't find it, but maybe we found the same name | |
690 | * link? */ | |
0ec0deaa LP |
691 | if (same_name_link) { |
692 | *state = UNIT_FILE_LINKED; | |
693 | return 1; | |
694 | } | |
83096483 LP |
695 | if (same_name_link_runtime) { |
696 | *state = UNIT_FILE_LINKED_RUNTIME; | |
697 | return 1; | |
83096483 LP |
698 | } |
699 | ||
700 | return 0; | |
701 | } | |
702 | ||
0ec0deaa | 703 | static void install_info_free(UnitFileInstallInfo *i) { |
83096483 | 704 | |
0ec0deaa LP |
705 | if (!i) |
706 | return; | |
83096483 | 707 | |
0ec0deaa LP |
708 | free(i->name); |
709 | free(i->path); | |
710 | strv_free(i->aliases); | |
711 | strv_free(i->wanted_by); | |
712 | strv_free(i->required_by); | |
713 | strv_free(i->also); | |
714 | free(i->default_instance); | |
715 | free(i->symlink_target); | |
716 | free(i); | |
717 | } | |
83096483 | 718 | |
0ec0deaa LP |
719 | static OrderedHashmap* install_info_hashmap_free(OrderedHashmap *m) { |
720 | UnitFileInstallInfo *i; | |
83096483 | 721 | |
0ec0deaa LP |
722 | if (!m) |
723 | return NULL; | |
83096483 | 724 | |
0ec0deaa LP |
725 | while ((i = ordered_hashmap_steal_first(m))) |
726 | install_info_free(i); | |
83096483 | 727 | |
0ec0deaa LP |
728 | return ordered_hashmap_free(m); |
729 | } | |
83096483 | 730 | |
0ec0deaa LP |
731 | static void install_context_done(InstallContext *c) { |
732 | assert(c); | |
83096483 | 733 | |
0ec0deaa LP |
734 | c->will_process = install_info_hashmap_free(c->will_process); |
735 | c->have_processed = install_info_hashmap_free(c->have_processed); | |
736 | } | |
83096483 | 737 | |
0ec0deaa LP |
738 | static UnitFileInstallInfo *install_info_find(InstallContext *c, const char *name) { |
739 | UnitFileInstallInfo *i; | |
83096483 | 740 | |
0ec0deaa LP |
741 | i = ordered_hashmap_get(c->have_processed, name); |
742 | if (i) | |
743 | return i; | |
83096483 | 744 | |
0ec0deaa | 745 | return ordered_hashmap_get(c->will_process, name); |
83096483 LP |
746 | } |
747 | ||
76adb5b8 LP |
748 | static int install_info_may_process(UnitFileInstallInfo *i, const LookupPaths *paths) { |
749 | assert(i); | |
750 | assert(paths); | |
751 | ||
752 | /* Checks whether the loaded unit file is one we should process, or is masked, transient or generated and thus | |
753 | * not subject to enable/disable operations. */ | |
754 | ||
755 | if (i->type == UNIT_FILE_TYPE_MASKED) | |
76ec966f | 756 | return -ERFKILL; |
76adb5b8 LP |
757 | if (path_is_generator(paths, i->path)) |
758 | return -EADDRNOTAVAIL; | |
759 | if (path_is_transient(paths, i->path)) | |
760 | return -EADDRNOTAVAIL; | |
761 | ||
762 | return 0; | |
763 | } | |
764 | ||
83096483 LP |
765 | static int install_info_add( |
766 | InstallContext *c, | |
767 | const char *name, | |
0ec0deaa LP |
768 | const char *path, |
769 | UnitFileInstallInfo **ret) { | |
770 | ||
cab6235f | 771 | UnitFileInstallInfo *i = NULL; |
83096483 LP |
772 | int r; |
773 | ||
774 | assert(c); | |
775 | assert(name || path); | |
776 | ||
777 | if (!name) | |
2b6bf07d | 778 | name = basename(path); |
83096483 | 779 | |
7410616c | 780 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
83096483 LP |
781 | return -EINVAL; |
782 | ||
0ec0deaa LP |
783 | i = install_info_find(c, name); |
784 | if (i) { | |
785 | if (ret) | |
786 | *ret = i; | |
83096483 | 787 | return 0; |
0ec0deaa | 788 | } |
83096483 | 789 | |
0ec0deaa | 790 | r = ordered_hashmap_ensure_allocated(&c->will_process, &string_hash_ops); |
83096483 LP |
791 | if (r < 0) |
792 | return r; | |
793 | ||
cab6235f | 794 | i = new0(UnitFileInstallInfo, 1); |
83096483 LP |
795 | if (!i) |
796 | return -ENOMEM; | |
0ec0deaa | 797 | i->type = _UNIT_FILE_TYPE_INVALID; |
83096483 LP |
798 | |
799 | i->name = strdup(name); | |
800 | if (!i->name) { | |
801 | r = -ENOMEM; | |
802 | goto fail; | |
803 | } | |
804 | ||
805 | if (path) { | |
806 | i->path = strdup(path); | |
807 | if (!i->path) { | |
808 | r = -ENOMEM; | |
809 | goto fail; | |
810 | } | |
811 | } | |
812 | ||
0ec0deaa | 813 | r = ordered_hashmap_put(c->will_process, i->name, i); |
83096483 LP |
814 | if (r < 0) |
815 | goto fail; | |
816 | ||
0ec0deaa LP |
817 | if (ret) |
818 | *ret = i; | |
819 | ||
83096483 LP |
820 | return 0; |
821 | ||
822 | fail: | |
d25e100b | 823 | install_info_free(i); |
83096483 LP |
824 | return r; |
825 | } | |
826 | ||
d54c4993 LP |
827 | static int config_parse_also( |
828 | const char *unit, | |
829 | const char *filename, | |
830 | unsigned line, | |
831 | const char *section, | |
832 | unsigned section_line, | |
833 | const char *lvalue, | |
834 | int ltype, | |
835 | const char *rvalue, | |
836 | void *data, | |
837 | void *userdata) { | |
83096483 | 838 | |
cab6235f | 839 | UnitFileInstallInfo *i = userdata; |
0ec0deaa LP |
840 | InstallContext *c = data; |
841 | int r; | |
83096483 LP |
842 | |
843 | assert(filename); | |
844 | assert(lvalue); | |
845 | assert(rvalue); | |
846 | ||
0ec0deaa LP |
847 | for (;;) { |
848 | _cleanup_free_ char *word = NULL; | |
03da6513 | 849 | |
0ec0deaa LP |
850 | r = extract_first_word(&rvalue, &word, NULL, 0); |
851 | if (r < 0) | |
852 | return r; | |
03da6513 SS |
853 | if (r == 0) |
854 | break; | |
83096483 | 855 | |
0ec0deaa | 856 | r = install_info_add(c, word, NULL, NULL); |
d9e5e694 | 857 | if (r < 0) |
83096483 | 858 | return r; |
aedd4012 | 859 | |
0ec0deaa | 860 | r = strv_push(&i->also, word); |
aedd4012 JS |
861 | if (r < 0) |
862 | return r; | |
0ec0deaa LP |
863 | |
864 | word = NULL; | |
83096483 LP |
865 | } |
866 | ||
867 | return 0; | |
868 | } | |
869 | ||
d54c4993 LP |
870 | static int config_parse_default_instance( |
871 | const char *unit, | |
872 | const char *filename, | |
873 | unsigned line, | |
874 | const char *section, | |
875 | unsigned section_line, | |
876 | const char *lvalue, | |
877 | int ltype, | |
878 | const char *rvalue, | |
879 | void *data, | |
880 | void *userdata) { | |
881 | ||
cab6235f | 882 | UnitFileInstallInfo *i = data; |
d54c4993 LP |
883 | char *printed; |
884 | int r; | |
885 | ||
886 | assert(filename); | |
887 | assert(lvalue); | |
888 | assert(rvalue); | |
889 | ||
890 | r = install_full_printf(i, rvalue, &printed); | |
891 | if (r < 0) | |
892 | return r; | |
893 | ||
d9ab174b AH |
894 | if (!unit_instance_is_valid(printed)) { |
895 | free(printed); | |
d54c4993 | 896 | return -EINVAL; |
d9ab174b | 897 | } |
d54c4993 LP |
898 | |
899 | free(i->default_instance); | |
900 | i->default_instance = printed; | |
901 | ||
902 | return 0; | |
903 | } | |
904 | ||
83096483 LP |
905 | static int unit_file_load( |
906 | InstallContext *c, | |
cab6235f | 907 | UnitFileInstallInfo *info, |
83096483 | 908 | const char *path, |
0ec0deaa | 909 | SearchFlags flags) { |
83096483 | 910 | |
f975e971 | 911 | const ConfigTableItem items[] = { |
d54c4993 LP |
912 | { "Install", "Alias", config_parse_strv, 0, &info->aliases }, |
913 | { "Install", "WantedBy", config_parse_strv, 0, &info->wanted_by }, | |
914 | { "Install", "RequiredBy", config_parse_strv, 0, &info->required_by }, | |
915 | { "Install", "DefaultInstance", config_parse_default_instance, 0, info }, | |
916 | { "Install", "Also", config_parse_also, 0, c }, | |
d54c4993 | 917 | {} |
83096483 LP |
918 | }; |
919 | ||
7fd1b19b | 920 | _cleanup_fclose_ FILE *f = NULL; |
0ec0deaa LP |
921 | _cleanup_close_ int fd = -1; |
922 | struct stat st; | |
923 | int r; | |
83096483 LP |
924 | |
925 | assert(c); | |
926 | assert(info); | |
927 | assert(path); | |
928 | ||
0ec0deaa LP |
929 | if (!(flags & SEARCH_LOAD)) { |
930 | r = lstat(path, &st); | |
931 | if (r < 0) | |
d25e100b LP |
932 | return -errno; |
933 | ||
0ec0deaa LP |
934 | if (null_or_empty(&st)) |
935 | info->type = UNIT_FILE_TYPE_MASKED; | |
936 | else if (S_ISREG(st.st_mode)) | |
937 | info->type = UNIT_FILE_TYPE_REGULAR; | |
938 | else if (S_ISLNK(st.st_mode)) | |
939 | return -ELOOP; | |
940 | else if (S_ISDIR(st.st_mode)) | |
941 | return -EISDIR; | |
942 | else | |
943 | return -ENOTTY; | |
944 | ||
d25e100b | 945 | return 0; |
e94937df LN |
946 | } |
947 | ||
0ec0deaa | 948 | fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW); |
83096483 LP |
949 | if (fd < 0) |
950 | return -errno; | |
0ec0deaa LP |
951 | if (fstat(fd, &st) < 0) |
952 | return -errno; | |
953 | if (null_or_empty(&st)) { | |
d986e364 | 954 | info->type = UNIT_FILE_TYPE_MASKED; |
0ec0deaa LP |
955 | return 0; |
956 | } | |
957 | if (S_ISDIR(st.st_mode)) | |
958 | return -EISDIR; | |
959 | if (!S_ISREG(st.st_mode)) | |
960 | return -ENOTTY; | |
83096483 LP |
961 | |
962 | f = fdopen(fd, "re"); | |
0ec0deaa LP |
963 | if (!f) |
964 | return -errno; | |
965 | fd = -1; | |
83096483 | 966 | |
36f822c4 ZJS |
967 | r = config_parse(NULL, path, f, |
968 | NULL, | |
969 | config_item_table_lookup, items, | |
970 | true, true, false, info); | |
83096483 LP |
971 | if (r < 0) |
972 | return r; | |
973 | ||
0ec0deaa | 974 | info->type = UNIT_FILE_TYPE_REGULAR; |
aedd4012 | 975 | |
78d54bd4 | 976 | return |
693eb9a2 LP |
977 | (int) strv_length(info->aliases) + |
978 | (int) strv_length(info->wanted_by) + | |
979 | (int) strv_length(info->required_by); | |
83096483 LP |
980 | } |
981 | ||
0ec0deaa LP |
982 | static int unit_file_load_or_readlink( |
983 | InstallContext *c, | |
984 | UnitFileInstallInfo *info, | |
985 | const char *path, | |
986 | const char *root_dir, | |
987 | SearchFlags flags) { | |
988 | ||
401017e0 | 989 | _cleanup_free_ char *target = NULL; |
0ec0deaa LP |
990 | int r; |
991 | ||
401017e0 | 992 | r = unit_file_load(c, info, path, flags); |
0ec0deaa LP |
993 | if (r != -ELOOP) |
994 | return r; | |
995 | ||
996 | /* This is a symlink, let's read it. */ | |
997 | ||
401017e0 | 998 | r = readlink_malloc(path, &target); |
0ec0deaa LP |
999 | if (r < 0) |
1000 | return r; | |
1001 | ||
401017e0 | 1002 | if (path_equal(target, "/dev/null")) |
0ec0deaa LP |
1003 | info->type = UNIT_FILE_TYPE_MASKED; |
1004 | else { | |
1005 | const char *bn; | |
1006 | UnitType a, b; | |
1007 | ||
401017e0 | 1008 | bn = basename(target); |
0ec0deaa LP |
1009 | |
1010 | if (unit_name_is_valid(info->name, UNIT_NAME_PLAIN)) { | |
1011 | ||
1012 | if (!unit_name_is_valid(bn, UNIT_NAME_PLAIN)) | |
1013 | return -EINVAL; | |
1014 | ||
1015 | } else if (unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { | |
1016 | ||
1017 | if (!unit_name_is_valid(bn, UNIT_NAME_INSTANCE|UNIT_NAME_TEMPLATE)) | |
1018 | return -EINVAL; | |
1019 | ||
1020 | } else if (unit_name_is_valid(info->name, UNIT_NAME_TEMPLATE)) { | |
1021 | ||
1022 | if (!unit_name_is_valid(bn, UNIT_NAME_TEMPLATE)) | |
1023 | return -EINVAL; | |
1024 | } else | |
1025 | return -EINVAL; | |
1026 | ||
1027 | /* Enforce that the symlink destination does not | |
1028 | * change the unit file type. */ | |
1029 | ||
1030 | a = unit_name_to_type(info->name); | |
1031 | b = unit_name_to_type(bn); | |
1032 | if (a < 0 || b < 0 || a != b) | |
1033 | return -EINVAL; | |
1034 | ||
401017e0 LP |
1035 | if (path_is_absolute(target)) |
1036 | /* This is an absolute path, prefix the root so that we always deal with fully qualified paths */ | |
1037 | info->symlink_target = prefix_root(root_dir, target); | |
1038 | else | |
1039 | /* This is a relative path, take it relative to the dir the symlink is located in. */ | |
1040 | info->symlink_target = file_in_same_dir(path, target); | |
1041 | if (!info->symlink_target) | |
1042 | return -ENOMEM; | |
1043 | ||
0ec0deaa | 1044 | info->type = UNIT_FILE_TYPE_SYMLINK; |
0ec0deaa LP |
1045 | } |
1046 | ||
1047 | return 0; | |
1048 | } | |
1049 | ||
83096483 LP |
1050 | static int unit_file_search( |
1051 | InstallContext *c, | |
cab6235f | 1052 | UnitFileInstallInfo *info, |
a8ffe6fb | 1053 | const LookupPaths *paths, |
0ec0deaa | 1054 | SearchFlags flags) { |
83096483 LP |
1055 | |
1056 | char **p; | |
1057 | int r; | |
1058 | ||
1059 | assert(c); | |
1060 | assert(info); | |
1061 | assert(paths); | |
1062 | ||
0ec0deaa LP |
1063 | /* Was this unit already loaded? */ |
1064 | if (info->type != _UNIT_FILE_TYPE_INVALID) | |
1065 | return 0; | |
1066 | ||
278fa575 | 1067 | if (info->path) |
e4bb56c7 | 1068 | return unit_file_load_or_readlink(c, info, info->path, paths->root_dir, flags); |
83096483 LP |
1069 | |
1070 | assert(info->name); | |
1071 | ||
a3c4eb07 | 1072 | STRV_FOREACH(p, paths->search_path) { |
e50bd775 | 1073 | _cleanup_free_ char *path = NULL; |
83096483 | 1074 | |
278fa575 | 1075 | path = strjoin(*p, "/", info->name, NULL); |
83096483 LP |
1076 | if (!path) |
1077 | return -ENOMEM; | |
1078 | ||
e4bb56c7 | 1079 | r = unit_file_load_or_readlink(c, info, path, paths->root_dir, flags); |
0ec0deaa LP |
1080 | if (r < 0) { |
1081 | if (r != -ENOENT) | |
1082 | return r; | |
1083 | } else { | |
83096483 | 1084 | info->path = path; |
62b00233 | 1085 | path = NULL; |
e50bd775 LP |
1086 | return r; |
1087 | } | |
e50bd775 | 1088 | } |
62b00233 | 1089 | |
7410616c | 1090 | if (unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { |
29283ea4 | 1091 | |
e50bd775 LP |
1092 | /* Unit file doesn't exist, however instance |
1093 | * enablement was requested. We will check if it is | |
1094 | * possible to load template unit file. */ | |
29283ea4 | 1095 | |
de228aab | 1096 | _cleanup_free_ char *template = NULL; |
e50bd775 | 1097 | |
7410616c LP |
1098 | r = unit_name_template(info->name, &template); |
1099 | if (r < 0) | |
1100 | return r; | |
e50bd775 | 1101 | |
a3c4eb07 | 1102 | STRV_FOREACH(p, paths->search_path) { |
e50bd775 LP |
1103 | _cleanup_free_ char *path = NULL; |
1104 | ||
278fa575 | 1105 | path = strjoin(*p, "/", template, NULL); |
62b00233 ZJS |
1106 | if (!path) |
1107 | return -ENOMEM; | |
29283ea4 | 1108 | |
e4bb56c7 | 1109 | r = unit_file_load_or_readlink(c, info, path, paths->root_dir, flags); |
0ec0deaa LP |
1110 | if (r < 0) { |
1111 | if (r != -ENOENT) | |
1112 | return r; | |
1113 | } else { | |
62b00233 ZJS |
1114 | info->path = path; |
1115 | path = NULL; | |
e50bd775 | 1116 | return r; |
29283ea4 | 1117 | } |
29283ea4 | 1118 | } |
83096483 LP |
1119 | } |
1120 | ||
1121 | return -ENOENT; | |
1122 | } | |
1123 | ||
0ec0deaa LP |
1124 | static int install_info_follow( |
1125 | InstallContext *c, | |
1126 | UnitFileInstallInfo *i, | |
83096483 | 1127 | const char *root_dir, |
0ec0deaa LP |
1128 | SearchFlags flags) { |
1129 | ||
1130 | assert(c); | |
1131 | assert(i); | |
1132 | ||
1133 | if (i->type != UNIT_FILE_TYPE_SYMLINK) | |
1134 | return -EINVAL; | |
1135 | if (!i->symlink_target) | |
1136 | return -EINVAL; | |
1137 | ||
1138 | /* If the basename doesn't match, the caller should add a | |
1139 | * complete new entry for this. */ | |
1140 | ||
1141 | if (!streq(basename(i->symlink_target), i->name)) | |
1142 | return -EXDEV; | |
1143 | ||
1144 | free(i->path); | |
1145 | i->path = i->symlink_target; | |
1146 | i->symlink_target = NULL; | |
1147 | i->type = _UNIT_FILE_TYPE_INVALID; | |
1148 | ||
1149 | return unit_file_load_or_readlink(c, i, i->path, root_dir, flags); | |
1150 | } | |
1151 | ||
1152 | static int install_info_traverse( | |
1153 | UnitFileScope scope, | |
1154 | InstallContext *c, | |
0ec0deaa LP |
1155 | const LookupPaths *paths, |
1156 | UnitFileInstallInfo *start, | |
1157 | SearchFlags flags, | |
1158 | UnitFileInstallInfo **ret) { | |
83096483 | 1159 | |
cab6235f | 1160 | UnitFileInstallInfo *i; |
0ec0deaa | 1161 | unsigned k = 0; |
83096483 LP |
1162 | int r; |
1163 | ||
1164 | assert(paths); | |
0ec0deaa LP |
1165 | assert(start); |
1166 | assert(c); | |
83096483 | 1167 | |
e4bb56c7 | 1168 | r = unit_file_search(c, start, paths, flags); |
83096483 LP |
1169 | if (r < 0) |
1170 | return r; | |
1171 | ||
0ec0deaa LP |
1172 | i = start; |
1173 | while (i->type == UNIT_FILE_TYPE_SYMLINK) { | |
1174 | /* Follow the symlink */ | |
83096483 | 1175 | |
0ec0deaa LP |
1176 | if (++k > UNIT_FILE_FOLLOW_SYMLINK_MAX) |
1177 | return -ELOOP; | |
83096483 | 1178 | |
e1c5c2b0 LP |
1179 | if (!(flags & SEARCH_FOLLOW_CONFIG_SYMLINKS)) { |
1180 | r = path_is_config(paths, i->path); | |
1181 | if (r < 0) | |
1182 | return r; | |
1183 | if (r > 0) | |
1184 | return -ELOOP; | |
1185 | } | |
83096483 | 1186 | |
e4bb56c7 | 1187 | r = install_info_follow(c, i, paths->root_dir, flags); |
0ec0deaa LP |
1188 | if (r < 0) { |
1189 | _cleanup_free_ char *buffer = NULL; | |
1190 | const char *bn; | |
83096483 | 1191 | |
0ec0deaa LP |
1192 | if (r != -EXDEV) |
1193 | return r; | |
83096483 | 1194 | |
0ec0deaa LP |
1195 | /* Target has a different name, create a new |
1196 | * install info object for that, and continue | |
1197 | * with that. */ | |
83096483 | 1198 | |
0ec0deaa | 1199 | bn = basename(i->symlink_target); |
83096483 | 1200 | |
0ec0deaa LP |
1201 | if (unit_name_is_valid(i->name, UNIT_NAME_INSTANCE) && |
1202 | unit_name_is_valid(bn, UNIT_NAME_TEMPLATE)) { | |
83096483 | 1203 | |
0ec0deaa LP |
1204 | _cleanup_free_ char *instance = NULL; |
1205 | ||
1206 | r = unit_name_to_instance(i->name, &instance); | |
1207 | if (r < 0) | |
1208 | return r; | |
1209 | ||
1210 | r = unit_name_replace_instance(bn, instance, &buffer); | |
1211 | if (r < 0) | |
1212 | return r; | |
1213 | ||
1214 | bn = buffer; | |
1215 | } | |
1216 | ||
1217 | r = install_info_add(c, bn, NULL, &i); | |
1218 | if (r < 0) | |
1219 | return r; | |
1220 | ||
e4bb56c7 | 1221 | r = unit_file_search(c, i, paths, flags); |
0ec0deaa LP |
1222 | if (r < 0) |
1223 | return r; | |
1224 | } | |
1225 | ||
1226 | /* Try again, with the new target we found. */ | |
83096483 LP |
1227 | } |
1228 | ||
0ec0deaa LP |
1229 | if (ret) |
1230 | *ret = i; | |
83096483 | 1231 | |
0ec0deaa LP |
1232 | return 0; |
1233 | } | |
83096483 | 1234 | |
401017e0 LP |
1235 | static int install_info_add_auto( |
1236 | InstallContext *c, | |
1237 | const LookupPaths *paths, | |
1238 | const char *name_or_path, | |
1239 | UnitFileInstallInfo **ret) { | |
1240 | ||
1241 | assert(c); | |
1242 | assert(name_or_path); | |
1243 | ||
1244 | if (path_is_absolute(name_or_path)) { | |
1245 | const char *pp; | |
1246 | ||
1247 | pp = prefix_roota(paths->root_dir, name_or_path); | |
1248 | ||
1249 | return install_info_add(c, NULL, pp, ret); | |
1250 | } else | |
1251 | return install_info_add(c, name_or_path, NULL, ret); | |
1252 | } | |
1253 | ||
0ec0deaa LP |
1254 | static int install_info_discover( |
1255 | UnitFileScope scope, | |
1256 | InstallContext *c, | |
0ec0deaa LP |
1257 | const LookupPaths *paths, |
1258 | const char *name, | |
1259 | SearchFlags flags, | |
1260 | UnitFileInstallInfo **ret) { | |
83096483 | 1261 | |
0ec0deaa LP |
1262 | UnitFileInstallInfo *i; |
1263 | int r; | |
83096483 | 1264 | |
0ec0deaa LP |
1265 | assert(c); |
1266 | assert(paths); | |
1267 | assert(name); | |
1268 | ||
401017e0 | 1269 | r = install_info_add_auto(c, paths, name, &i); |
1f8c4604 LP |
1270 | if (r < 0) |
1271 | return r; | |
83096483 | 1272 | |
e4bb56c7 | 1273 | return install_info_traverse(scope, c, paths, i, flags, ret); |
83096483 LP |
1274 | } |
1275 | ||
1276 | static int install_info_symlink_alias( | |
cab6235f | 1277 | UnitFileInstallInfo *i, |
401017e0 | 1278 | const LookupPaths *paths, |
83096483 LP |
1279 | const char *config_path, |
1280 | bool force, | |
1281 | UnitFileChange **changes, | |
1282 | unsigned *n_changes) { | |
1283 | ||
1284 | char **s; | |
1285 | int r = 0, q; | |
1286 | ||
1287 | assert(i); | |
401017e0 | 1288 | assert(paths); |
83096483 LP |
1289 | assert(config_path); |
1290 | ||
1291 | STRV_FOREACH(s, i->aliases) { | |
7fd1b19b | 1292 | _cleanup_free_ char *alias_path = NULL, *dst = NULL; |
401017e0 | 1293 | const char *rp; |
83096483 | 1294 | |
19f6d710 LP |
1295 | q = install_full_printf(i, *s, &dst); |
1296 | if (q < 0) | |
1297 | return q; | |
83096483 | 1298 | |
7584d236 | 1299 | alias_path = path_make_absolute(dst, config_path); |
83096483 LP |
1300 | if (!alias_path) |
1301 | return -ENOMEM; | |
1302 | ||
401017e0 LP |
1303 | rp = skip_root(paths, i->path); |
1304 | ||
1305 | q = create_symlink(rp ?: i->path, alias_path, force, changes, n_changes); | |
83096483 LP |
1306 | if (r == 0) |
1307 | r = q; | |
1308 | } | |
1309 | ||
1310 | return r; | |
1311 | } | |
1312 | ||
1313 | static int install_info_symlink_wants( | |
cab6235f | 1314 | UnitFileInstallInfo *i, |
401017e0 | 1315 | const LookupPaths *paths, |
83096483 | 1316 | const char *config_path, |
d54c4993 LP |
1317 | char **list, |
1318 | const char *suffix, | |
83096483 LP |
1319 | bool force, |
1320 | UnitFileChange **changes, | |
1321 | unsigned *n_changes) { | |
1322 | ||
d54c4993 LP |
1323 | _cleanup_free_ char *buf = NULL; |
1324 | const char *n; | |
83096483 LP |
1325 | char **s; |
1326 | int r = 0, q; | |
1327 | ||
1328 | assert(i); | |
401017e0 | 1329 | assert(paths); |
83096483 LP |
1330 | assert(config_path); |
1331 | ||
7410616c | 1332 | if (unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE)) { |
0a327d75 LP |
1333 | |
1334 | /* Don't install any symlink if there's no default | |
1335 | * instance configured */ | |
1336 | ||
1337 | if (!i->default_instance) | |
1338 | return 0; | |
1339 | ||
7410616c LP |
1340 | r = unit_name_replace_instance(i->name, i->default_instance, &buf); |
1341 | if (r < 0) | |
1342 | return r; | |
83096483 | 1343 | |
d54c4993 LP |
1344 | n = buf; |
1345 | } else | |
1346 | n = i->name; | |
78d54bd4 | 1347 | |
d54c4993 | 1348 | STRV_FOREACH(s, list) { |
7fd1b19b | 1349 | _cleanup_free_ char *path = NULL, *dst = NULL; |
401017e0 | 1350 | const char *rp; |
78d54bd4 | 1351 | |
19f6d710 LP |
1352 | q = install_full_printf(i, *s, &dst); |
1353 | if (q < 0) | |
1354 | return q; | |
7584d236 | 1355 | |
7410616c | 1356 | if (!unit_name_is_valid(dst, UNIT_NAME_ANY)) { |
78d54bd4 LP |
1357 | r = -EINVAL; |
1358 | continue; | |
1359 | } | |
1360 | ||
d54c4993 LP |
1361 | path = strjoin(config_path, "/", dst, suffix, n, NULL); |
1362 | if (!path) | |
78d54bd4 LP |
1363 | return -ENOMEM; |
1364 | ||
401017e0 LP |
1365 | rp = skip_root(paths, i->path); |
1366 | ||
1367 | q = create_symlink(rp ?: i->path, path, force, changes, n_changes); | |
78d54bd4 LP |
1368 | if (r == 0) |
1369 | r = q; | |
1370 | } | |
1371 | ||
1372 | return r; | |
1373 | } | |
1374 | ||
83096483 | 1375 | static int install_info_symlink_link( |
cab6235f | 1376 | UnitFileInstallInfo *i, |
a8ffe6fb | 1377 | const LookupPaths *paths, |
83096483 LP |
1378 | const char *config_path, |
1379 | bool force, | |
1380 | UnitFileChange **changes, | |
1381 | unsigned *n_changes) { | |
1382 | ||
7fd1b19b | 1383 | _cleanup_free_ char *path = NULL; |
401017e0 | 1384 | const char *rp; |
1dacfd2a | 1385 | int r; |
83096483 LP |
1386 | |
1387 | assert(i); | |
1388 | assert(paths); | |
1389 | assert(config_path); | |
1390 | assert(i->path); | |
1391 | ||
32c0ed7b | 1392 | r = in_search_path(paths, i->path); |
83096483 LP |
1393 | if (r != 0) |
1394 | return r; | |
1395 | ||
1dacfd2a LP |
1396 | path = strjoin(config_path, "/", i->name, NULL); |
1397 | if (!path) | |
83096483 LP |
1398 | return -ENOMEM; |
1399 | ||
401017e0 LP |
1400 | rp = skip_root(paths, i->path); |
1401 | ||
1402 | return create_symlink(rp ?: i->path, path, force, changes, n_changes); | |
83096483 LP |
1403 | } |
1404 | ||
1405 | static int install_info_apply( | |
cab6235f | 1406 | UnitFileInstallInfo *i, |
a8ffe6fb | 1407 | const LookupPaths *paths, |
83096483 LP |
1408 | const char *config_path, |
1409 | bool force, | |
1410 | UnitFileChange **changes, | |
1411 | unsigned *n_changes) { | |
1412 | ||
1413 | int r, q; | |
1414 | ||
1415 | assert(i); | |
1416 | assert(paths); | |
1417 | assert(config_path); | |
1418 | ||
0ec0deaa LP |
1419 | if (i->type != UNIT_FILE_TYPE_REGULAR) |
1420 | return 0; | |
1421 | ||
401017e0 | 1422 | r = install_info_symlink_alias(i, paths, config_path, force, changes, n_changes); |
83096483 | 1423 | |
401017e0 | 1424 | q = install_info_symlink_wants(i, paths, config_path, i->wanted_by, ".wants/", force, changes, n_changes); |
83096483 LP |
1425 | if (r == 0) |
1426 | r = q; | |
1427 | ||
401017e0 | 1428 | q = install_info_symlink_wants(i, paths, config_path, i->required_by, ".requires/", force, changes, n_changes); |
78d54bd4 LP |
1429 | if (r == 0) |
1430 | r = q; | |
1431 | ||
e4bb56c7 | 1432 | q = install_info_symlink_link(i, paths, config_path, force, changes, n_changes); |
83096483 LP |
1433 | if (r == 0) |
1434 | r = q; | |
1435 | ||
1436 | return r; | |
1437 | } | |
1438 | ||
1439 | static int install_context_apply( | |
0ec0deaa | 1440 | UnitFileScope scope, |
83096483 | 1441 | InstallContext *c, |
a8ffe6fb | 1442 | const LookupPaths *paths, |
83096483 | 1443 | const char *config_path, |
83096483 | 1444 | bool force, |
0ec0deaa | 1445 | SearchFlags flags, |
83096483 LP |
1446 | UnitFileChange **changes, |
1447 | unsigned *n_changes) { | |
1448 | ||
cab6235f | 1449 | UnitFileInstallInfo *i; |
0ec0deaa | 1450 | int r; |
83096483 LP |
1451 | |
1452 | assert(c); | |
1453 | assert(paths); | |
1454 | assert(config_path); | |
1455 | ||
0ec0deaa | 1456 | if (ordered_hashmap_isempty(c->will_process)) |
d25e100b | 1457 | return 0; |
83096483 | 1458 | |
0ec0deaa | 1459 | r = ordered_hashmap_ensure_allocated(&c->have_processed, &string_hash_ops); |
d25e100b LP |
1460 | if (r < 0) |
1461 | return r; | |
83096483 | 1462 | |
2d5c93c7 | 1463 | r = 0; |
0ec0deaa LP |
1464 | while ((i = ordered_hashmap_first(c->will_process))) { |
1465 | int q; | |
83096483 | 1466 | |
0ec0deaa LP |
1467 | q = ordered_hashmap_move_one(c->have_processed, c->will_process, i->name); |
1468 | if (q < 0) | |
1469 | return q; | |
83096483 | 1470 | |
e4bb56c7 | 1471 | r = install_info_traverse(scope, c, paths, i, flags, NULL); |
0ec0deaa | 1472 | if (r < 0) |
83096483 | 1473 | return r; |
0ec0deaa LP |
1474 | |
1475 | if (i->type != UNIT_FILE_TYPE_REGULAR) | |
1476 | continue; | |
83096483 | 1477 | |
e4bb56c7 | 1478 | q = install_info_apply(i, paths, config_path, force, changes, n_changes); |
0ec0deaa LP |
1479 | if (r >= 0) { |
1480 | if (q < 0) | |
1481 | r = q; | |
1482 | else | |
596fc263 | 1483 | r += q; |
0ec0deaa | 1484 | } |
83096483 LP |
1485 | } |
1486 | ||
1487 | return r; | |
1488 | } | |
1489 | ||
1490 | static int install_context_mark_for_removal( | |
0ec0deaa | 1491 | UnitFileScope scope, |
83096483 | 1492 | InstallContext *c, |
a8ffe6fb | 1493 | const LookupPaths *paths, |
83096483 | 1494 | Set **remove_symlinks_to, |
e4bb56c7 | 1495 | const char *config_path) { |
83096483 | 1496 | |
cab6235f | 1497 | UnitFileInstallInfo *i; |
0ec0deaa | 1498 | int r; |
83096483 LP |
1499 | |
1500 | assert(c); | |
1501 | assert(paths); | |
1502 | assert(config_path); | |
1503 | ||
1504 | /* Marks all items for removal */ | |
1505 | ||
0ec0deaa | 1506 | if (ordered_hashmap_isempty(c->will_process)) |
d25e100b | 1507 | return 0; |
83096483 | 1508 | |
0ec0deaa | 1509 | r = ordered_hashmap_ensure_allocated(&c->have_processed, &string_hash_ops); |
d25e100b LP |
1510 | if (r < 0) |
1511 | return r; | |
83096483 | 1512 | |
0ec0deaa | 1513 | while ((i = ordered_hashmap_first(c->will_process))) { |
83096483 | 1514 | |
0ec0deaa LP |
1515 | r = ordered_hashmap_move_one(c->have_processed, c->will_process, i->name); |
1516 | if (r < 0) | |
83096483 | 1517 | return r; |
29283ea4 | 1518 | |
e4bb56c7 | 1519 | r = install_info_traverse(scope, c, paths, i, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, NULL); |
0ec0deaa LP |
1520 | if (r < 0) |
1521 | return r; | |
1522 | ||
1523 | if (i->type != UNIT_FILE_TYPE_REGULAR) | |
1524 | continue; | |
1525 | ||
1526 | r = mark_symlink_for_removal(remove_symlinks_to, i->name); | |
1527 | if (r < 0) | |
1528 | return r; | |
1529 | } | |
1530 | ||
1531 | return 0; | |
1532 | } | |
1533 | ||
1534 | int unit_file_mask( | |
1535 | UnitFileScope scope, | |
1536 | bool runtime, | |
1537 | const char *root_dir, | |
1538 | char **files, | |
1539 | bool force, | |
1540 | UnitFileChange **changes, | |
1541 | unsigned *n_changes) { | |
1542 | ||
e1c5c2b0 LP |
1543 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
1544 | const char *config_path; | |
0ec0deaa LP |
1545 | char **i; |
1546 | int r; | |
1547 | ||
1548 | assert(scope >= 0); | |
1549 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
1550 | ||
4943d143 | 1551 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
0ec0deaa LP |
1552 | if (r < 0) |
1553 | return r; | |
1554 | ||
e1c5c2b0 LP |
1555 | config_path = runtime ? paths.runtime_config : paths.persistent_config; |
1556 | ||
0ec0deaa LP |
1557 | STRV_FOREACH(i, files) { |
1558 | _cleanup_free_ char *path = NULL; | |
1559 | int q; | |
1560 | ||
1561 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) { | |
1562 | if (r == 0) | |
1563 | r = -EINVAL; | |
1564 | continue; | |
1565 | } | |
1566 | ||
e1c5c2b0 | 1567 | path = path_make_absolute(*i, config_path); |
0ec0deaa LP |
1568 | if (!path) |
1569 | return -ENOMEM; | |
29283ea4 | 1570 | |
0ec0deaa LP |
1571 | q = create_symlink("/dev/null", path, force, changes, n_changes); |
1572 | if (q < 0 && r >= 0) | |
83096483 LP |
1573 | r = q; |
1574 | } | |
1575 | ||
1576 | return r; | |
1577 | } | |
1578 | ||
0ec0deaa LP |
1579 | int unit_file_unmask( |
1580 | UnitFileScope scope, | |
1581 | bool runtime, | |
1582 | const char *root_dir, | |
1583 | char **files, | |
1584 | UnitFileChange **changes, | |
1585 | unsigned *n_changes) { | |
1586 | ||
e1c5c2b0 | 1587 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
0ec0deaa | 1588 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; |
0ec0deaa LP |
1589 | _cleanup_free_ char **todo = NULL; |
1590 | size_t n_todo = 0, n_allocated = 0; | |
e1c5c2b0 | 1591 | const char *config_path; |
0ec0deaa LP |
1592 | char **i; |
1593 | int r, q; | |
1594 | ||
1595 | assert(scope >= 0); | |
1596 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
1597 | ||
4943d143 | 1598 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
0ec0deaa LP |
1599 | if (r < 0) |
1600 | return r; | |
1601 | ||
e1c5c2b0 LP |
1602 | config_path = runtime ? paths.runtime_config : paths.persistent_config; |
1603 | ||
0ec0deaa LP |
1604 | STRV_FOREACH(i, files) { |
1605 | _cleanup_free_ char *path = NULL; | |
1606 | ||
1607 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) | |
1608 | return -EINVAL; | |
1609 | ||
1610 | path = path_make_absolute(*i, config_path); | |
1611 | if (!path) | |
1612 | return -ENOMEM; | |
1613 | ||
1614 | r = null_or_empty_path(path); | |
1615 | if (r == -ENOENT) | |
1616 | continue; | |
1617 | if (r < 0) | |
1618 | return r; | |
1619 | if (r == 0) | |
1620 | continue; | |
1621 | ||
1622 | if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2)) | |
1623 | return -ENOMEM; | |
1624 | ||
1625 | todo[n_todo++] = *i; | |
1626 | } | |
1627 | ||
1628 | strv_uniq(todo); | |
1629 | ||
1630 | r = 0; | |
1631 | STRV_FOREACH(i, todo) { | |
1632 | _cleanup_free_ char *path = NULL; | |
401017e0 | 1633 | const char *rp; |
0ec0deaa LP |
1634 | |
1635 | path = path_make_absolute(*i, config_path); | |
1636 | if (!path) | |
1637 | return -ENOMEM; | |
1638 | ||
1639 | if (unlink(path) < 0) { | |
d096025b | 1640 | if (errno != ENOENT && r >= 0) |
0ec0deaa | 1641 | r = -errno; |
0ec0deaa | 1642 | |
401017e0 | 1643 | continue; |
0ec0deaa | 1644 | } |
401017e0 LP |
1645 | |
1646 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, path, NULL); | |
1647 | ||
1648 | rp = skip_root(&paths, path); | |
1649 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: path); | |
1650 | if (q < 0) | |
1651 | return q; | |
0ec0deaa LP |
1652 | } |
1653 | ||
401017e0 | 1654 | q = remove_marked_symlinks(remove_symlinks_to, config_path, &paths, changes, n_changes); |
0ec0deaa LP |
1655 | if (r >= 0) |
1656 | r = q; | |
1657 | ||
1658 | return r; | |
1659 | } | |
1660 | ||
1661 | int unit_file_link( | |
e94937df LN |
1662 | UnitFileScope scope, |
1663 | bool runtime, | |
1664 | const char *root_dir, | |
1665 | char **files, | |
e94937df LN |
1666 | bool force, |
1667 | UnitFileChange **changes, | |
1668 | unsigned *n_changes) { | |
1669 | ||
1670 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; | |
0ec0deaa LP |
1671 | _cleanup_free_ char **todo = NULL; |
1672 | size_t n_todo = 0, n_allocated = 0; | |
e1c5c2b0 | 1673 | const char *config_path; |
e94937df | 1674 | char **i; |
0ec0deaa | 1675 | int r, q; |
e94937df LN |
1676 | |
1677 | assert(scope >= 0); | |
1678 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
1679 | ||
4943d143 | 1680 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
e94937df LN |
1681 | if (r < 0) |
1682 | return r; | |
1683 | ||
e1c5c2b0 | 1684 | config_path = runtime ? paths.runtime_config : paths.persistent_config; |
e94937df LN |
1685 | |
1686 | STRV_FOREACH(i, files) { | |
0ec0deaa LP |
1687 | _cleanup_free_ char *full = NULL; |
1688 | struct stat st; | |
1689 | char *fn; | |
e94937df | 1690 | |
0ec0deaa LP |
1691 | if (!path_is_absolute(*i)) |
1692 | return -EINVAL; | |
e94937df | 1693 | |
0ec0deaa LP |
1694 | fn = basename(*i); |
1695 | if (!unit_name_is_valid(fn, UNIT_NAME_ANY)) | |
1696 | return -EINVAL; | |
1697 | ||
e4bb56c7 | 1698 | full = prefix_root(paths.root_dir, *i); |
0ec0deaa LP |
1699 | if (!full) |
1700 | return -ENOMEM; | |
1701 | ||
1702 | if (lstat(full, &st) < 0) | |
1703 | return -errno; | |
1704 | if (S_ISLNK(st.st_mode)) | |
1705 | return -ELOOP; | |
1706 | if (S_ISDIR(st.st_mode)) | |
1707 | return -EISDIR; | |
1708 | if (!S_ISREG(st.st_mode)) | |
1709 | return -ENOTTY; | |
1710 | ||
32c0ed7b | 1711 | q = in_search_path(&paths, *i); |
0ec0deaa LP |
1712 | if (q < 0) |
1713 | return q; | |
1714 | if (q > 0) | |
1715 | continue; | |
1716 | ||
1717 | if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2)) | |
1718 | return -ENOMEM; | |
1719 | ||
1720 | todo[n_todo++] = *i; | |
e94937df LN |
1721 | } |
1722 | ||
0ec0deaa | 1723 | strv_uniq(todo); |
e94937df | 1724 | |
0ec0deaa LP |
1725 | r = 0; |
1726 | STRV_FOREACH(i, todo) { | |
401017e0 LP |
1727 | _cleanup_free_ char *new_path = NULL; |
1728 | const char *old_path; | |
0ec0deaa | 1729 | |
401017e0 LP |
1730 | old_path = skip_root(&paths, *i); |
1731 | new_path = path_make_absolute(basename(*i), config_path); | |
1732 | if (!new_path) | |
0ec0deaa LP |
1733 | return -ENOMEM; |
1734 | ||
401017e0 | 1735 | q = create_symlink(old_path ?: *i, new_path, force, changes, n_changes); |
0ec0deaa LP |
1736 | if (q < 0 && r >= 0) |
1737 | r = q; | |
2d5c93c7 MS |
1738 | } |
1739 | ||
0ec0deaa LP |
1740 | return r; |
1741 | } | |
1742 | ||
344ca755 LP |
1743 | static int path_shall_revert(const LookupPaths *paths, const char *path) { |
1744 | int r; | |
1745 | ||
1746 | assert(paths); | |
1747 | assert(path); | |
1748 | ||
1749 | /* Checks whether the path is one where the drop-in directories shall be removed. */ | |
1750 | ||
1751 | r = path_is_config(paths, path); | |
1752 | if (r != 0) | |
1753 | return r; | |
1754 | ||
1755 | r = path_is_control(paths, path); | |
1756 | if (r != 0) | |
1757 | return r; | |
1758 | ||
1759 | return path_is_transient(paths, path); | |
1760 | } | |
1761 | ||
1762 | int unit_file_revert( | |
1763 | UnitFileScope scope, | |
1764 | const char *root_dir, | |
1765 | char **files, | |
1766 | UnitFileChange **changes, | |
1767 | unsigned *n_changes) { | |
1768 | ||
1769 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
1770 | /* _cleanup_(install_context_done) InstallContext c = {}; */ | |
1771 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; | |
1772 | _cleanup_strv_free_ char **todo = NULL; | |
1773 | size_t n_todo = 0, n_allocated = 0; | |
1774 | char **i; | |
1775 | int r, q; | |
1776 | ||
1777 | /* Puts a unit file back into vendor state. This means: | |
1778 | * | |
1779 | * a) we remove all drop-in snippets added by the user ("config"), add to transient units ("transient"), and | |
1780 | * added via "systemctl set-property" ("control"), but not if the drop-in is generated ("generated"). | |
1781 | * | |
1782 | * c) if there's a vendor unit file (i.e. one in /usr) we remove any configured overriding unit files (i.e. in | |
1783 | * "config", but not in "transient" or "control" or even "generated"). | |
1784 | * | |
1785 | * We remove all that in both the runtime and the persistant directories, if that applies. | |
1786 | */ | |
1787 | ||
1788 | r = lookup_paths_init(&paths, scope, 0, root_dir); | |
1789 | if (r < 0) | |
1790 | return r; | |
1791 | ||
1792 | STRV_FOREACH(i, files) { | |
1793 | bool has_vendor = false; | |
1794 | char **p; | |
1795 | ||
1796 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) | |
1797 | return -EINVAL; | |
1798 | ||
1799 | STRV_FOREACH(p, paths.search_path) { | |
1800 | _cleanup_free_ char *path = NULL, *dropin = NULL; | |
1801 | struct stat st; | |
1802 | ||
1803 | path = path_make_absolute(*i, *p); | |
1804 | if (!path) | |
1805 | return -ENOMEM; | |
1806 | ||
1807 | r = lstat(path, &st); | |
1808 | if (r < 0) { | |
1809 | if (errno != ENOENT) | |
1810 | return -errno; | |
1811 | } else if (S_ISREG(st.st_mode)) { | |
1812 | /* Check if there's a vendor version */ | |
1813 | r = path_is_vendor(&paths, path); | |
1814 | if (r < 0) | |
1815 | return r; | |
1816 | if (r > 0) | |
1817 | has_vendor = true; | |
1818 | } | |
1819 | ||
1820 | dropin = strappend(path, ".d"); | |
1821 | if (!dropin) | |
1822 | return -ENOMEM; | |
1823 | ||
1824 | r = lstat(dropin, &st); | |
1825 | if (r < 0) { | |
1826 | if (errno != ENOENT) | |
1827 | return -errno; | |
1828 | } else if (S_ISDIR(st.st_mode)) { | |
1829 | /* Remove the drop-ins */ | |
1830 | r = path_shall_revert(&paths, dropin); | |
1831 | if (r < 0) | |
1832 | return r; | |
1833 | if (r > 0) { | |
1834 | if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2)) | |
1835 | return -ENOMEM; | |
1836 | ||
1837 | todo[n_todo++] = dropin; | |
1838 | dropin = NULL; | |
1839 | } | |
1840 | } | |
1841 | } | |
1842 | ||
1843 | if (!has_vendor) | |
1844 | continue; | |
1845 | ||
1846 | /* OK, there's a vendor version, hence drop all configuration versions */ | |
1847 | STRV_FOREACH(p, paths.search_path) { | |
1848 | _cleanup_free_ char *path = NULL; | |
1849 | struct stat st; | |
1850 | ||
1851 | path = path_make_absolute(*i, *p); | |
1852 | if (!path) | |
1853 | return -ENOMEM; | |
1854 | ||
1855 | r = lstat(path, &st); | |
1856 | if (r < 0) { | |
1857 | if (errno != ENOENT) | |
1858 | return -errno; | |
1859 | } else if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) { | |
1860 | r = path_is_config(&paths, path); | |
1861 | if (r < 0) | |
1862 | return r; | |
1863 | if (r > 0) { | |
1864 | if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2)) | |
1865 | return -ENOMEM; | |
1866 | ||
1867 | todo[n_todo++] = path; | |
1868 | path = NULL; | |
1869 | } | |
1870 | } | |
1871 | } | |
1872 | } | |
1873 | ||
1874 | strv_uniq(todo); | |
1875 | ||
1876 | r = 0; | |
1877 | STRV_FOREACH(i, todo) { | |
1878 | _cleanup_strv_free_ char **fs = NULL; | |
1879 | const char *rp; | |
1880 | char **j; | |
1881 | ||
1882 | (void) get_files_in_directory(*i, &fs); | |
1883 | ||
1884 | q = rm_rf(*i, REMOVE_ROOT|REMOVE_PHYSICAL); | |
1885 | if (q < 0 && q != -ENOENT && r >= 0) { | |
1886 | r = q; | |
1887 | continue; | |
1888 | } | |
1889 | ||
1890 | STRV_FOREACH(j, fs) { | |
1891 | _cleanup_free_ char *t = NULL; | |
1892 | ||
1893 | t = strjoin(*i, "/", *j, NULL); | |
1894 | if (!t) | |
1895 | return -ENOMEM; | |
1896 | ||
1897 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, t, NULL); | |
1898 | } | |
1899 | ||
1900 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, *i, NULL); | |
1901 | ||
1902 | rp = skip_root(&paths, *i); | |
1903 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: *i); | |
1904 | if (q < 0) | |
1905 | return q; | |
1906 | } | |
1907 | ||
1908 | q = remove_marked_symlinks(remove_symlinks_to, paths.runtime_config, &paths, changes, n_changes); | |
1909 | if (r >= 0) | |
1910 | r = q; | |
1911 | ||
1912 | q = remove_marked_symlinks(remove_symlinks_to, paths.persistent_config, &paths, changes, n_changes); | |
1913 | if (r >= 0) | |
1914 | r = q; | |
1915 | ||
1916 | return r; | |
1917 | } | |
1918 | ||
0ec0deaa LP |
1919 | int unit_file_add_dependency( |
1920 | UnitFileScope scope, | |
1921 | bool runtime, | |
1922 | const char *root_dir, | |
1923 | char **files, | |
1924 | const char *target, | |
1925 | UnitDependency dep, | |
1926 | bool force, | |
1927 | UnitFileChange **changes, | |
1928 | unsigned *n_changes) { | |
1929 | ||
1930 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; | |
1931 | _cleanup_(install_context_done) InstallContext c = {}; | |
0ec0deaa | 1932 | UnitFileInstallInfo *i, *target_info; |
e1c5c2b0 | 1933 | const char *config_path; |
0ec0deaa LP |
1934 | char **f; |
1935 | int r; | |
1936 | ||
1937 | assert(scope >= 0); | |
1938 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
1939 | assert(target); | |
1940 | ||
1941 | if (!IN_SET(dep, UNIT_WANTS, UNIT_REQUIRES)) | |
1942 | return -EINVAL; | |
1943 | ||
1944 | if (!unit_name_is_valid(target, UNIT_NAME_ANY)) | |
1945 | return -EINVAL; | |
1946 | ||
4943d143 | 1947 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
0ec0deaa LP |
1948 | if (r < 0) |
1949 | return r; | |
1950 | ||
e1c5c2b0 | 1951 | config_path = runtime ? paths.runtime_config : paths.persistent_config; |
0ec0deaa | 1952 | |
e4bb56c7 | 1953 | r = install_info_discover(scope, &c, &paths, target, SEARCH_FOLLOW_CONFIG_SYMLINKS, &target_info); |
0ec0deaa LP |
1954 | if (r < 0) |
1955 | return r; | |
76adb5b8 LP |
1956 | r = install_info_may_process(target_info, &paths); |
1957 | if (r < 0) | |
1958 | return r; | |
0ec0deaa LP |
1959 | |
1960 | assert(target_info->type == UNIT_FILE_TYPE_REGULAR); | |
e94937df | 1961 | |
0ec0deaa LP |
1962 | STRV_FOREACH(f, files) { |
1963 | char ***l; | |
1964 | ||
e4bb56c7 | 1965 | r = install_info_discover(scope, &c, &paths, *f, SEARCH_FOLLOW_CONFIG_SYMLINKS, &i); |
e94937df LN |
1966 | if (r < 0) |
1967 | return r; | |
76adb5b8 LP |
1968 | r = install_info_may_process(i, &paths); |
1969 | if (r < 0) | |
1970 | return r; | |
0ec0deaa LP |
1971 | |
1972 | assert(i->type == UNIT_FILE_TYPE_REGULAR); | |
1973 | ||
1974 | /* We didn't actually load anything from the unit | |
1975 | * file, but instead just add in our new symlink to | |
1976 | * create. */ | |
e94937df LN |
1977 | |
1978 | if (dep == UNIT_WANTS) | |
0ec0deaa | 1979 | l = &i->wanted_by; |
e94937df | 1980 | else |
0ec0deaa | 1981 | l = &i->required_by; |
e94937df | 1982 | |
0ec0deaa LP |
1983 | strv_free(*l); |
1984 | *l = strv_new(target_info->name, NULL); | |
1985 | if (!*l) | |
1986 | return -ENOMEM; | |
e94937df LN |
1987 | } |
1988 | ||
e4bb56c7 | 1989 | return install_context_apply(scope, &c, &paths, config_path, force, SEARCH_FOLLOW_CONFIG_SYMLINKS, changes, n_changes); |
e94937df LN |
1990 | } |
1991 | ||
83096483 LP |
1992 | int unit_file_enable( |
1993 | UnitFileScope scope, | |
1994 | bool runtime, | |
1995 | const char *root_dir, | |
7195aa42 | 1996 | char **files, |
83096483 LP |
1997 | bool force, |
1998 | UnitFileChange **changes, | |
1999 | unsigned *n_changes) { | |
2000 | ||
7fd1b19b | 2001 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
59ccf93d | 2002 | _cleanup_(install_context_done) InstallContext c = {}; |
e1c5c2b0 | 2003 | const char *config_path; |
0ec0deaa LP |
2004 | UnitFileInstallInfo *i; |
2005 | char **f; | |
83096483 LP |
2006 | int r; |
2007 | ||
2008 | assert(scope >= 0); | |
2009 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2010 | ||
4943d143 | 2011 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
83096483 LP |
2012 | if (r < 0) |
2013 | return r; | |
2014 | ||
e1c5c2b0 | 2015 | config_path = runtime ? paths.runtime_config : paths.persistent_config; |
83096483 | 2016 | |
0ec0deaa | 2017 | STRV_FOREACH(f, files) { |
e4bb56c7 | 2018 | r = install_info_discover(scope, &c, &paths, *f, SEARCH_LOAD, &i); |
83096483 | 2019 | if (r < 0) |
d9e5e694 | 2020 | return r; |
76adb5b8 LP |
2021 | r = install_info_may_process(i, &paths); |
2022 | if (r < 0) | |
2023 | return r; | |
0ec0deaa LP |
2024 | |
2025 | assert(i->type == UNIT_FILE_TYPE_REGULAR); | |
83096483 LP |
2026 | } |
2027 | ||
729e3769 | 2028 | /* This will return the number of symlink rules that were |
d25e100b LP |
2029 | supposed to be created, not the ones actually created. This |
2030 | is useful to determine whether the passed files had any | |
2031 | installation data at all. */ | |
b91a3b02 | 2032 | |
e4bb56c7 | 2033 | return install_context_apply(scope, &c, &paths, config_path, force, SEARCH_LOAD, changes, n_changes); |
83096483 LP |
2034 | } |
2035 | ||
2036 | int unit_file_disable( | |
2037 | UnitFileScope scope, | |
2038 | bool runtime, | |
2039 | const char *root_dir, | |
7195aa42 | 2040 | char **files, |
83096483 LP |
2041 | UnitFileChange **changes, |
2042 | unsigned *n_changes) { | |
2043 | ||
7fd1b19b | 2044 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
59ccf93d | 2045 | _cleanup_(install_context_done) InstallContext c = {}; |
7fd1b19b | 2046 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; |
e1c5c2b0 | 2047 | const char *config_path; |
0ec0deaa LP |
2048 | char **i; |
2049 | int r; | |
83096483 LP |
2050 | |
2051 | assert(scope >= 0); | |
2052 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2053 | ||
4943d143 | 2054 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
83096483 LP |
2055 | if (r < 0) |
2056 | return r; | |
2057 | ||
e1c5c2b0 | 2058 | config_path = runtime ? paths.runtime_config : paths.persistent_config; |
83096483 LP |
2059 | |
2060 | STRV_FOREACH(i, files) { | |
0ec0deaa LP |
2061 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) |
2062 | return -EINVAL; | |
2063 | ||
2064 | r = install_info_add(&c, *i, NULL, NULL); | |
83096483 | 2065 | if (r < 0) |
d9e5e694 | 2066 | return r; |
83096483 LP |
2067 | } |
2068 | ||
e4bb56c7 | 2069 | r = install_context_mark_for_removal(scope, &c, &paths, &remove_symlinks_to, config_path); |
0ec0deaa LP |
2070 | if (r < 0) |
2071 | return r; | |
83096483 | 2072 | |
401017e0 | 2073 | return remove_marked_symlinks(remove_symlinks_to, config_path, &paths, changes, n_changes); |
83096483 LP |
2074 | } |
2075 | ||
2076 | int unit_file_reenable( | |
2077 | UnitFileScope scope, | |
2078 | bool runtime, | |
2079 | const char *root_dir, | |
7195aa42 | 2080 | char **files, |
83096483 LP |
2081 | bool force, |
2082 | UnitFileChange **changes, | |
2083 | unsigned *n_changes) { | |
0ec0deaa LP |
2084 | |
2085 | char **n; | |
92d430a9 | 2086 | int r; |
0ec0deaa | 2087 | size_t l, i; |
83096483 | 2088 | |
0ec0deaa LP |
2089 | /* First, we invoke the disable command with only the basename... */ |
2090 | l = strv_length(files); | |
2091 | n = newa(char*, l+1); | |
2092 | for (i = 0; i < l; i++) | |
2093 | n[i] = basename(files[i]); | |
2094 | n[i] = NULL; | |
2095 | ||
2096 | r = unit_file_disable(scope, runtime, root_dir, n, changes, n_changes); | |
83096483 | 2097 | if (r < 0) |
d9e5e694 | 2098 | return r; |
83096483 | 2099 | |
0ec0deaa | 2100 | /* But the enable command with the full name */ |
d25e100b | 2101 | return unit_file_enable(scope, runtime, root_dir, files, force, changes, n_changes); |
83096483 LP |
2102 | } |
2103 | ||
99504dd4 VP |
2104 | int unit_file_set_default( |
2105 | UnitFileScope scope, | |
2106 | const char *root_dir, | |
0ec0deaa | 2107 | const char *name, |
718db961 | 2108 | bool force, |
99504dd4 VP |
2109 | UnitFileChange **changes, |
2110 | unsigned *n_changes) { | |
2111 | ||
2112 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; | |
59ccf93d | 2113 | _cleanup_(install_context_done) InstallContext c = {}; |
0ec0deaa | 2114 | UnitFileInstallInfo *i; |
401017e0 | 2115 | const char *new_path, *old_path; |
99504dd4 | 2116 | int r; |
99504dd4 VP |
2117 | |
2118 | assert(scope >= 0); | |
2119 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
0ec0deaa | 2120 | assert(name); |
99504dd4 | 2121 | |
401017e0 | 2122 | if (unit_name_to_type(name) != UNIT_TARGET) /* this also validates the name */ |
0ec0deaa LP |
2123 | return -EINVAL; |
2124 | if (streq(name, SPECIAL_DEFAULT_TARGET)) | |
99504dd4 VP |
2125 | return -EINVAL; |
2126 | ||
4943d143 | 2127 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
99504dd4 VP |
2128 | if (r < 0) |
2129 | return r; | |
2130 | ||
e4bb56c7 | 2131 | r = install_info_discover(scope, &c, &paths, name, 0, &i); |
99504dd4 VP |
2132 | if (r < 0) |
2133 | return r; | |
76adb5b8 LP |
2134 | r = install_info_may_process(i, &paths); |
2135 | if (r < 0) | |
2136 | return r; | |
99504dd4 | 2137 | |
401017e0 LP |
2138 | old_path = skip_root(&paths, i->path); |
2139 | new_path = strjoina(paths.persistent_config, "/" SPECIAL_DEFAULT_TARGET); | |
16ed0233 | 2140 | |
401017e0 | 2141 | return create_symlink(old_path ?: i->path, new_path, force, changes, n_changes); |
99504dd4 VP |
2142 | } |
2143 | ||
2144 | int unit_file_get_default( | |
2145 | UnitFileScope scope, | |
2146 | const char *root_dir, | |
2147 | char **name) { | |
2148 | ||
2149 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; | |
0ec0deaa LP |
2150 | _cleanup_(install_context_done) InstallContext c = {}; |
2151 | UnitFileInstallInfo *i; | |
2152 | char *n; | |
99504dd4 VP |
2153 | int r; |
2154 | ||
16ed0233 LP |
2155 | assert(scope >= 0); |
2156 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2157 | assert(name); | |
2158 | ||
4943d143 | 2159 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
0ec0deaa LP |
2160 | if (r < 0) |
2161 | return r; | |
99504dd4 | 2162 | |
e4bb56c7 | 2163 | r = install_info_discover(scope, &c, &paths, SPECIAL_DEFAULT_TARGET, SEARCH_FOLLOW_CONFIG_SYMLINKS, &i); |
0ec0deaa LP |
2164 | if (r < 0) |
2165 | return r; | |
76adb5b8 LP |
2166 | r = install_info_may_process(i, &paths); |
2167 | if (r < 0) | |
2168 | return r; | |
99504dd4 | 2169 | |
0ec0deaa LP |
2170 | n = strdup(i->name); |
2171 | if (!n) | |
2172 | return -ENOMEM; | |
99504dd4 | 2173 | |
0ec0deaa LP |
2174 | *name = n; |
2175 | return 0; | |
99504dd4 VP |
2176 | } |
2177 | ||
2c52204c | 2178 | static int unit_file_lookup_state( |
83096483 | 2179 | UnitFileScope scope, |
a8ffe6fb | 2180 | const LookupPaths *paths, |
0ec0deaa LP |
2181 | const char *name, |
2182 | UnitFileState *ret) { | |
83096483 | 2183 | |
0ec0deaa LP |
2184 | _cleanup_(install_context_done) InstallContext c = {}; |
2185 | UnitFileInstallInfo *i; | |
2186 | UnitFileState state; | |
2187 | int r; | |
83096483 | 2188 | |
a8ffe6fb | 2189 | assert(paths); |
0ec0deaa | 2190 | assert(name); |
83096483 | 2191 | |
7410616c | 2192 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
83096483 LP |
2193 | return -EINVAL; |
2194 | ||
e4bb56c7 | 2195 | r = install_info_discover(scope, &c, paths, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, &i); |
0ec0deaa LP |
2196 | if (r < 0) |
2197 | return r; | |
83096483 | 2198 | |
0ec0deaa LP |
2199 | /* Shortcut things, if the caller just wants to know if this unit exists. */ |
2200 | if (!ret) | |
2201 | return 0; | |
83096483 | 2202 | |
0ec0deaa | 2203 | switch (i->type) { |
67820a0c | 2204 | |
0ec0deaa | 2205 | case UNIT_FILE_TYPE_MASKED: |
385eb996 LP |
2206 | r = path_is_runtime(paths, i->path); |
2207 | if (r < 0) | |
2208 | return r; | |
2209 | ||
2210 | state = r > 0 ? UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED; | |
0ec0deaa | 2211 | break; |
83096483 | 2212 | |
0ec0deaa | 2213 | case UNIT_FILE_TYPE_REGULAR: |
f4dc1e65 | 2214 | r = path_is_generator(paths, i->path); |
f4139308 LP |
2215 | if (r < 0) |
2216 | return r; | |
2217 | if (r > 0) { | |
2218 | state = UNIT_FILE_GENERATED; | |
2219 | break; | |
2220 | } | |
2221 | ||
e4fca67f LP |
2222 | r = path_is_transient(paths, i->path); |
2223 | if (r < 0) | |
2224 | return r; | |
2225 | if (r > 0) { | |
2226 | state = UNIT_FILE_TRANSIENT; | |
2227 | break; | |
2228 | } | |
2229 | ||
e4bb56c7 | 2230 | r = find_symlinks_in_scope(scope, paths, i->name, &state); |
d9e5e694 ZJS |
2231 | if (r < 0) |
2232 | return r; | |
0ec0deaa LP |
2233 | if (r == 0) { |
2234 | if (UNIT_FILE_INSTALL_INFO_HAS_RULES(i)) | |
2235 | state = UNIT_FILE_DISABLED; | |
2236 | else if (UNIT_FILE_INSTALL_INFO_HAS_ALSO(i)) | |
2237 | state = UNIT_FILE_INDIRECT; | |
2238 | else | |
2239 | state = UNIT_FILE_STATIC; | |
2240 | } | |
83096483 | 2241 | |
0ec0deaa LP |
2242 | break; |
2243 | ||
2244 | default: | |
2245 | assert_not_reached("Unexpect unit file type."); | |
83096483 LP |
2246 | } |
2247 | ||
0ec0deaa LP |
2248 | *ret = state; |
2249 | return 0; | |
83096483 LP |
2250 | } |
2251 | ||
0ec0deaa | 2252 | int unit_file_get_state( |
a8ffe6fb ZJS |
2253 | UnitFileScope scope, |
2254 | const char *root_dir, | |
0ec0deaa LP |
2255 | const char *name, |
2256 | UnitFileState *ret) { | |
a8ffe6fb ZJS |
2257 | |
2258 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; | |
2259 | int r; | |
2260 | ||
2261 | assert(scope >= 0); | |
2262 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2263 | assert(name); | |
2264 | ||
4943d143 | 2265 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
a8ffe6fb ZJS |
2266 | if (r < 0) |
2267 | return r; | |
2268 | ||
e4bb56c7 | 2269 | return unit_file_lookup_state(scope, &paths, name, ret); |
a8ffe6fb ZJS |
2270 | } |
2271 | ||
e735decc LP |
2272 | int unit_file_exists(UnitFileScope scope, const LookupPaths *paths, const char *name) { |
2273 | _cleanup_(install_context_done) InstallContext c = {}; | |
2274 | int r; | |
2275 | ||
2276 | assert(paths); | |
2277 | assert(name); | |
2278 | ||
2279 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) | |
2280 | return -EINVAL; | |
2281 | ||
2282 | r = install_info_discover(scope, &c, paths, name, 0, NULL); | |
2283 | if (r == -ENOENT) | |
2284 | return 0; | |
2285 | if (r < 0) | |
2286 | return r; | |
2287 | ||
2288 | return 1; | |
2289 | } | |
2290 | ||
c2a8d7b0 | 2291 | int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char *name) { |
7fd1b19b | 2292 | _cleanup_strv_free_ char **files = NULL; |
cba2ef02 | 2293 | char **p; |
83096483 LP |
2294 | int r; |
2295 | ||
2296 | assert(scope >= 0); | |
2297 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2298 | assert(name); | |
2299 | ||
0ec0deaa LP |
2300 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
2301 | return -EINVAL; | |
2302 | ||
83096483 | 2303 | if (scope == UNIT_FILE_SYSTEM) |
c2a8d7b0 | 2304 | r = conf_files_list(&files, ".preset", root_dir, |
a7480dba LP |
2305 | "/etc/systemd/system-preset", |
2306 | "/usr/local/lib/systemd/system-preset", | |
2307 | "/usr/lib/systemd/system-preset", | |
b4bdfefa | 2308 | #ifdef HAVE_SPLIT_USR |
a7480dba | 2309 | "/lib/systemd/system-preset", |
b4bdfefa | 2310 | #endif |
83096483 LP |
2311 | NULL); |
2312 | else if (scope == UNIT_FILE_GLOBAL) | |
c2a8d7b0 | 2313 | r = conf_files_list(&files, ".preset", root_dir, |
a7480dba LP |
2314 | "/etc/systemd/user-preset", |
2315 | "/usr/local/lib/systemd/user-preset", | |
2316 | "/usr/lib/systemd/user-preset", | |
83096483 LP |
2317 | NULL); |
2318 | else | |
0ec0deaa | 2319 | return 1; /* Default is "enable" */ |
83096483 LP |
2320 | |
2321 | if (r < 0) | |
2322 | return r; | |
2323 | ||
cba2ef02 | 2324 | STRV_FOREACH(p, files) { |
7fd1b19b | 2325 | _cleanup_fclose_ FILE *f; |
0ec0deaa | 2326 | char line[LINE_MAX]; |
83096483 | 2327 | |
cba2ef02 | 2328 | f = fopen(*p, "re"); |
83096483 LP |
2329 | if (!f) { |
2330 | if (errno == ENOENT) | |
2331 | continue; | |
2332 | ||
d9e5e694 | 2333 | return -errno; |
83096483 LP |
2334 | } |
2335 | ||
0ec0deaa LP |
2336 | FOREACH_LINE(line, f, return -errno) { |
2337 | const char *parameter; | |
2338 | char *l; | |
83096483 LP |
2339 | |
2340 | l = strstrip(line); | |
83096483 | 2341 | |
0ec0deaa LP |
2342 | if (isempty(l)) |
2343 | continue; | |
2344 | if (strchr(COMMENTS, *l)) | |
83096483 LP |
2345 | continue; |
2346 | ||
0ec0deaa LP |
2347 | parameter = first_word(l, "enable"); |
2348 | if (parameter) { | |
2349 | if (fnmatch(parameter, name, FNM_NOESCAPE) == 0) { | |
c2a8d7b0 | 2350 | log_debug("Preset file says enable %s.", name); |
d9e5e694 | 2351 | return 1; |
c2a8d7b0 | 2352 | } |
d9e5e694 | 2353 | |
0ec0deaa LP |
2354 | continue; |
2355 | } | |
83096483 | 2356 | |
0ec0deaa LP |
2357 | parameter = first_word(l, "disable"); |
2358 | if (parameter) { | |
2359 | if (fnmatch(parameter, name, FNM_NOESCAPE) == 0) { | |
c2a8d7b0 | 2360 | log_debug("Preset file says disable %s.", name); |
d9e5e694 | 2361 | return 0; |
c2a8d7b0 | 2362 | } |
d9e5e694 | 2363 | |
0ec0deaa LP |
2364 | continue; |
2365 | } | |
2366 | ||
2367 | log_debug("Couldn't parse line '%s'", l); | |
83096483 | 2368 | } |
83096483 LP |
2369 | } |
2370 | ||
2371 | /* Default is "enable" */ | |
c2a8d7b0 | 2372 | log_debug("Preset file doesn't say anything about %s, enabling.", name); |
d9e5e694 | 2373 | return 1; |
83096483 LP |
2374 | } |
2375 | ||
0ec0deaa LP |
2376 | static int execute_preset( |
2377 | UnitFileScope scope, | |
2378 | InstallContext *plus, | |
2379 | InstallContext *minus, | |
2380 | const LookupPaths *paths, | |
2381 | const char *config_path, | |
0ec0deaa LP |
2382 | char **files, |
2383 | UnitFilePresetMode mode, | |
2384 | bool force, | |
2385 | UnitFileChange **changes, | |
2386 | unsigned *n_changes) { | |
2387 | ||
2388 | int r; | |
2389 | ||
2390 | assert(plus); | |
2391 | assert(minus); | |
2392 | assert(paths); | |
2393 | assert(config_path); | |
2394 | ||
2395 | if (mode != UNIT_FILE_PRESET_ENABLE_ONLY) { | |
2396 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
2397 | ||
e4bb56c7 | 2398 | r = install_context_mark_for_removal(scope, minus, paths, &remove_symlinks_to, config_path); |
0ec0deaa LP |
2399 | if (r < 0) |
2400 | return r; | |
2401 | ||
401017e0 | 2402 | r = remove_marked_symlinks(remove_symlinks_to, config_path, paths, changes, n_changes); |
0ec0deaa LP |
2403 | } else |
2404 | r = 0; | |
2405 | ||
2406 | if (mode != UNIT_FILE_PRESET_DISABLE_ONLY) { | |
2407 | int q; | |
2408 | ||
2409 | /* Returns number of symlinks that where supposed to be installed. */ | |
e4bb56c7 | 2410 | q = install_context_apply(scope, plus, paths, config_path, force, SEARCH_LOAD, changes, n_changes); |
0ec0deaa LP |
2411 | if (r >= 0) { |
2412 | if (q < 0) | |
2413 | r = q; | |
2414 | else | |
596fc263 | 2415 | r += q; |
0ec0deaa LP |
2416 | } |
2417 | } | |
2418 | ||
2419 | return r; | |
2420 | } | |
2421 | ||
2422 | static int preset_prepare_one( | |
2423 | UnitFileScope scope, | |
2424 | InstallContext *plus, | |
2425 | InstallContext *minus, | |
2426 | LookupPaths *paths, | |
0ec0deaa LP |
2427 | UnitFilePresetMode mode, |
2428 | const char *name) { | |
2429 | ||
2430 | UnitFileInstallInfo *i; | |
2431 | int r; | |
2432 | ||
2433 | if (install_info_find(plus, name) || | |
2434 | install_info_find(minus, name)) | |
2435 | return 0; | |
2436 | ||
e4bb56c7 | 2437 | r = unit_file_query_preset(scope, paths->root_dir, name); |
0ec0deaa LP |
2438 | if (r < 0) |
2439 | return r; | |
2440 | ||
2441 | if (r > 0) { | |
e4bb56c7 | 2442 | r = install_info_discover(scope, plus, paths, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, &i); |
0ec0deaa LP |
2443 | if (r < 0) |
2444 | return r; | |
2445 | ||
76adb5b8 LP |
2446 | r = install_info_may_process(i, paths); |
2447 | if (r < 0) | |
2448 | return r; | |
0ec0deaa | 2449 | } else |
e4bb56c7 | 2450 | r = install_info_discover(scope, minus, paths, name, SEARCH_FOLLOW_CONFIG_SYMLINKS, &i); |
0ec0deaa LP |
2451 | |
2452 | return r; | |
2453 | } | |
2454 | ||
83096483 LP |
2455 | int unit_file_preset( |
2456 | UnitFileScope scope, | |
2457 | bool runtime, | |
2458 | const char *root_dir, | |
7195aa42 | 2459 | char **files, |
d309c1c3 | 2460 | UnitFilePresetMode mode, |
83096483 LP |
2461 | bool force, |
2462 | UnitFileChange **changes, | |
2463 | unsigned *n_changes) { | |
2464 | ||
59ccf93d | 2465 | _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; |
da39f6a6 | 2466 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
e1c5c2b0 | 2467 | const char *config_path; |
da39f6a6 | 2468 | char **i; |
0ec0deaa | 2469 | int r; |
83096483 LP |
2470 | |
2471 | assert(scope >= 0); | |
2472 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
86bbe5bf | 2473 | assert(mode < _UNIT_FILE_PRESET_MAX); |
83096483 | 2474 | |
4943d143 | 2475 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
83096483 LP |
2476 | if (r < 0) |
2477 | return r; | |
2478 | ||
e1c5c2b0 | 2479 | config_path = runtime ? paths.runtime_config : paths.persistent_config; |
83096483 LP |
2480 | |
2481 | STRV_FOREACH(i, files) { | |
7410616c | 2482 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) |
d9e5e694 | 2483 | return -EINVAL; |
83096483 | 2484 | |
e4bb56c7 | 2485 | r = preset_prepare_one(scope, &plus, &minus, &paths, mode, *i); |
83096483 | 2486 | if (r < 0) |
d9e5e694 | 2487 | return r; |
83096483 LP |
2488 | } |
2489 | ||
e4bb56c7 | 2490 | return execute_preset(scope, &plus, &minus, &paths, config_path, files, mode, force, changes, n_changes); |
d309c1c3 LP |
2491 | } |
2492 | ||
2493 | int unit_file_preset_all( | |
2494 | UnitFileScope scope, | |
2495 | bool runtime, | |
2496 | const char *root_dir, | |
2497 | UnitFilePresetMode mode, | |
2498 | bool force, | |
2499 | UnitFileChange **changes, | |
2500 | unsigned *n_changes) { | |
2501 | ||
59ccf93d | 2502 | _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; |
d309c1c3 | 2503 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
e1c5c2b0 | 2504 | const char *config_path = NULL; |
d309c1c3 | 2505 | char **i; |
0ec0deaa | 2506 | int r; |
d309c1c3 LP |
2507 | |
2508 | assert(scope >= 0); | |
2509 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
86bbe5bf | 2510 | assert(mode < _UNIT_FILE_PRESET_MAX); |
d309c1c3 | 2511 | |
4943d143 | 2512 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
d309c1c3 LP |
2513 | if (r < 0) |
2514 | return r; | |
2515 | ||
e1c5c2b0 | 2516 | config_path = runtime ? paths.runtime_config : paths.persistent_config; |
d309c1c3 | 2517 | |
a3c4eb07 | 2518 | STRV_FOREACH(i, paths.search_path) { |
d309c1c3 | 2519 | _cleanup_closedir_ DIR *d = NULL; |
d25e100b | 2520 | struct dirent *de; |
d309c1c3 | 2521 | |
401017e0 | 2522 | d = opendir(*i); |
d309c1c3 LP |
2523 | if (!d) { |
2524 | if (errno == ENOENT) | |
2525 | continue; | |
2526 | ||
2527 | return -errno; | |
2528 | } | |
2529 | ||
d25e100b | 2530 | FOREACH_DIRENT(de, d, return -errno) { |
d309c1c3 | 2531 | |
7410616c | 2532 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
d309c1c3 LP |
2533 | continue; |
2534 | ||
2535 | dirent_ensure_type(d, de); | |
2536 | ||
0ec0deaa | 2537 | if (!IN_SET(de->d_type, DT_LNK, DT_REG)) |
d309c1c3 LP |
2538 | continue; |
2539 | ||
e4bb56c7 | 2540 | r = preset_prepare_one(scope, &plus, &minus, &paths, mode, de->d_name); |
9a0a413a ZJS |
2541 | if (r == -ERFKILL) |
2542 | r = unit_file_changes_add(changes, n_changes, | |
2543 | UNIT_FILE_IS_MASKED, de->d_name, NULL); | |
d309c1c3 LP |
2544 | if (r < 0) |
2545 | return r; | |
2546 | } | |
2547 | } | |
2548 | ||
e4bb56c7 | 2549 | return execute_preset(scope, &plus, &minus, &paths, config_path, NULL, mode, force, changes, n_changes); |
83096483 LP |
2550 | } |
2551 | ||
59ccf93d LP |
2552 | static void unit_file_list_free_one(UnitFileList *f) { |
2553 | if (!f) | |
d9e5e694 ZJS |
2554 | return; |
2555 | ||
59ccf93d LP |
2556 | free(f->path); |
2557 | free(f); | |
d9e5e694 | 2558 | } |
59ccf93d | 2559 | |
0ec0deaa LP |
2560 | Hashmap* unit_file_list_free(Hashmap *h) { |
2561 | UnitFileList *i; | |
2562 | ||
2563 | while ((i = hashmap_steal_first(h))) | |
2564 | unit_file_list_free_one(i); | |
2565 | ||
2566 | return hashmap_free(h); | |
2567 | } | |
2568 | ||
59ccf93d | 2569 | DEFINE_TRIVIAL_CLEANUP_FUNC(UnitFileList*, unit_file_list_free_one); |
d9e5e694 | 2570 | |
83096483 LP |
2571 | int unit_file_get_list( |
2572 | UnitFileScope scope, | |
2573 | const char *root_dir, | |
2574 | Hashmap *h) { | |
2575 | ||
7fd1b19b | 2576 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
d9e5e694 | 2577 | char **i; |
83096483 LP |
2578 | int r; |
2579 | ||
2580 | assert(scope >= 0); | |
2581 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2582 | assert(h); | |
2583 | ||
4943d143 | 2584 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
83096483 LP |
2585 | if (r < 0) |
2586 | return r; | |
2587 | ||
a3c4eb07 | 2588 | STRV_FOREACH(i, paths.search_path) { |
da39f6a6 | 2589 | _cleanup_closedir_ DIR *d = NULL; |
d25e100b | 2590 | struct dirent *de; |
83096483 | 2591 | |
401017e0 | 2592 | d = opendir(*i); |
83096483 LP |
2593 | if (!d) { |
2594 | if (errno == ENOENT) | |
2595 | continue; | |
2596 | ||
d9e5e694 | 2597 | return -errno; |
83096483 LP |
2598 | } |
2599 | ||
d25e100b | 2600 | FOREACH_DIRENT(de, d, return -errno) { |
59ccf93d | 2601 | _cleanup_(unit_file_list_free_onep) UnitFileList *f = NULL; |
83096483 | 2602 | |
7410616c | 2603 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
83096483 LP |
2604 | continue; |
2605 | ||
2606 | if (hashmap_get(h, de->d_name)) | |
2607 | continue; | |
2608 | ||
da39f6a6 | 2609 | dirent_ensure_type(d, de); |
83096483 | 2610 | |
da39f6a6 | 2611 | if (!IN_SET(de->d_type, DT_LNK, DT_REG)) |
83096483 LP |
2612 | continue; |
2613 | ||
2614 | f = new0(UnitFileList, 1); | |
d9e5e694 ZJS |
2615 | if (!f) |
2616 | return -ENOMEM; | |
83096483 | 2617 | |
401017e0 | 2618 | f->path = path_make_absolute(de->d_name, *i); |
d9e5e694 ZJS |
2619 | if (!f->path) |
2620 | return -ENOMEM; | |
83096483 | 2621 | |
401017e0 | 2622 | r = unit_file_lookup_state(scope, &paths, de->d_name, &f->state); |
d9e5e694 | 2623 | if (r < 0) |
0ec0deaa | 2624 | f->state = UNIT_FILE_BAD; |
81fc054d | 2625 | |
2b6bf07d | 2626 | r = hashmap_put(h, basename(f->path), f); |
d9e5e694 ZJS |
2627 | if (r < 0) |
2628 | return r; | |
0ec0deaa | 2629 | |
d9e5e694 | 2630 | f = NULL; /* prevent cleanup */ |
83096483 LP |
2631 | } |
2632 | } | |
2633 | ||
77cd2c87 | 2634 | return 0; |
83096483 LP |
2635 | } |
2636 | ||
2637 | static const char* const unit_file_state_table[_UNIT_FILE_STATE_MAX] = { | |
2638 | [UNIT_FILE_ENABLED] = "enabled", | |
771faa9a | 2639 | [UNIT_FILE_ENABLED_RUNTIME] = "enabled-runtime", |
83096483 LP |
2640 | [UNIT_FILE_LINKED] = "linked", |
2641 | [UNIT_FILE_LINKED_RUNTIME] = "linked-runtime", | |
2642 | [UNIT_FILE_MASKED] = "masked", | |
2643 | [UNIT_FILE_MASKED_RUNTIME] = "masked-runtime", | |
2644 | [UNIT_FILE_STATIC] = "static", | |
b5b46d59 | 2645 | [UNIT_FILE_DISABLED] = "disabled", |
aedd4012 | 2646 | [UNIT_FILE_INDIRECT] = "indirect", |
f4139308 | 2647 | [UNIT_FILE_GENERATED] = "generated", |
e4fca67f | 2648 | [UNIT_FILE_TRANSIENT] = "transient", |
0ec0deaa | 2649 | [UNIT_FILE_BAD] = "bad", |
83096483 LP |
2650 | }; |
2651 | ||
2652 | DEFINE_STRING_TABLE_LOOKUP(unit_file_state, UnitFileState); | |
c0576cd6 LP |
2653 | |
2654 | static const char* const unit_file_change_type_table[_UNIT_FILE_CHANGE_TYPE_MAX] = { | |
2655 | [UNIT_FILE_SYMLINK] = "symlink", | |
2656 | [UNIT_FILE_UNLINK] = "unlink", | |
9a0a413a | 2657 | [UNIT_FILE_IS_MASKED] = "masked", |
c0576cd6 LP |
2658 | }; |
2659 | ||
2660 | DEFINE_STRING_TABLE_LOOKUP(unit_file_change_type, UnitFileChangeType); | |
d309c1c3 | 2661 | |
86bbe5bf | 2662 | static const char* const unit_file_preset_mode_table[_UNIT_FILE_PRESET_MAX] = { |
d309c1c3 LP |
2663 | [UNIT_FILE_PRESET_FULL] = "full", |
2664 | [UNIT_FILE_PRESET_ENABLE_ONLY] = "enable-only", | |
2665 | [UNIT_FILE_PRESET_DISABLE_ONLY] = "disable-only", | |
2666 | }; | |
2667 | ||
2668 | DEFINE_STRING_TABLE_LOOKUP(unit_file_preset_mode, UnitFilePresetMode); |