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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" |
a760db24 | 43 | #include "locale-util.h" |
a8fbdf54 TA |
44 | #include "log.h" |
45 | #include "macro.h" | |
07630cea | 46 | #include "mkdir.h" |
83096483 | 47 | #include "path-lookup.h" |
07630cea | 48 | #include "path-util.h" |
344ca755 | 49 | #include "rm-rf.h" |
07630cea LP |
50 | #include "set.h" |
51 | #include "special.h" | |
8fcde012 | 52 | #include "stat-util.h" |
8b43440b | 53 | #include "string-table.h" |
07630cea | 54 | #include "string-util.h" |
83096483 LP |
55 | #include "strv.h" |
56 | #include "unit-name.h" | |
83096483 | 57 | |
0ec0deaa LP |
58 | #define UNIT_FILE_FOLLOW_SYMLINK_MAX 64 |
59 | ||
60 | typedef enum SearchFlags { | |
61 | SEARCH_LOAD = 1, | |
62 | SEARCH_FOLLOW_CONFIG_SYMLINKS = 2, | |
63 | } SearchFlags; | |
64 | ||
83096483 | 65 | typedef struct { |
0ec0deaa LP |
66 | OrderedHashmap *will_process; |
67 | OrderedHashmap *have_processed; | |
83096483 LP |
68 | } InstallContext; |
69 | ||
8965d9f8 AC |
70 | typedef enum { |
71 | PRESET_UNKNOWN, | |
72 | PRESET_ENABLE, | |
73 | PRESET_DISABLE, | |
74 | } PresetAction; | |
75 | ||
76 | typedef struct { | |
77 | char *pattern; | |
78 | PresetAction action; | |
79 | } PresetRule; | |
80 | ||
81 | typedef struct { | |
82 | PresetRule *rules; | |
83 | size_t n_rules; | |
84 | } Presets; | |
85 | ||
86 | static inline void presets_freep(Presets *p) { | |
87 | size_t i; | |
88 | ||
89 | if (!p) | |
90 | return; | |
91 | ||
92 | for (i = 0; i < p->n_rules; i++) | |
93 | free(p->rules[i].pattern); | |
94 | ||
95 | free(p->rules); | |
96 | p->n_rules = 0; | |
97 | } | |
98 | ||
2c52204c LP |
99 | static int unit_file_lookup_state(UnitFileScope scope, const LookupPaths *paths, const char *name, UnitFileState *ret); |
100 | ||
8a993b61 ZJS |
101 | bool unit_type_may_alias(UnitType type) { |
102 | return IN_SET(type, | |
103 | UNIT_SERVICE, | |
104 | UNIT_SOCKET, | |
105 | UNIT_TARGET, | |
106 | UNIT_DEVICE, | |
107 | UNIT_TIMER, | |
108 | UNIT_PATH); | |
109 | } | |
110 | ||
ce99c68a ZJS |
111 | bool unit_type_may_template(UnitType type) { |
112 | return IN_SET(type, | |
113 | UNIT_SERVICE, | |
114 | UNIT_SOCKET, | |
115 | UNIT_TARGET, | |
116 | UNIT_TIMER, | |
117 | UNIT_PATH); | |
118 | } | |
119 | ||
64f9280e ZJS |
120 | static const char *unit_file_type_table[_UNIT_FILE_TYPE_MAX] = { |
121 | [UNIT_FILE_TYPE_REGULAR] = "regular", | |
122 | [UNIT_FILE_TYPE_SYMLINK] = "symlink", | |
123 | [UNIT_FILE_TYPE_MASKED] = "masked", | |
124 | }; | |
125 | ||
126 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(unit_file_type, UnitFileType); | |
127 | ||
32c0ed7b | 128 | static int in_search_path(const LookupPaths *p, const char *path) { |
8f294b45 | 129 | _cleanup_free_ char *parent = NULL; |
0ec0deaa | 130 | char **i; |
8f294b45 LP |
131 | |
132 | assert(path); | |
133 | ||
5f311f8c LP |
134 | parent = dirname_malloc(path); |
135 | if (!parent) | |
136 | return -ENOMEM; | |
8f294b45 | 137 | |
32c0ed7b | 138 | STRV_FOREACH(i, p->search_path) |
0ec0deaa LP |
139 | if (path_equal(parent, *i)) |
140 | return true; | |
141 | ||
142 | return false; | |
8f294b45 LP |
143 | } |
144 | ||
401017e0 | 145 | static const char* skip_root(const LookupPaths *p, const char *path) { |
8f9364f9 | 146 | char *e; |
401017e0 | 147 | |
8f9364f9 LP |
148 | assert(p); |
149 | assert(path); | |
401017e0 | 150 | |
8f9364f9 LP |
151 | if (!p->root_dir) |
152 | return path; | |
401017e0 | 153 | |
8f9364f9 LP |
154 | e = path_startswith(path, p->root_dir); |
155 | if (!e) | |
156 | return NULL; | |
157 | ||
158 | /* Make sure the returned path starts with a slash */ | |
159 | if (e[0] != '/') { | |
160 | if (e == path || e[-1] != '/') | |
161 | return NULL; | |
401017e0 | 162 | |
8f9364f9 | 163 | e--; |
401017e0 LP |
164 | } |
165 | ||
8f9364f9 | 166 | return e; |
401017e0 LP |
167 | } |
168 | ||
f4dc1e65 | 169 | static int path_is_generator(const LookupPaths *p, const char *path) { |
f4139308 LP |
170 | _cleanup_free_ char *parent = NULL; |
171 | ||
e1c5c2b0 | 172 | assert(p); |
f4139308 LP |
173 | assert(path); |
174 | ||
175 | parent = dirname_malloc(path); | |
176 | if (!parent) | |
177 | return -ENOMEM; | |
178 | ||
24737c29 ZJS |
179 | return path_equal_ptr(parent, p->generator) || |
180 | path_equal_ptr(parent, p->generator_early) || | |
181 | path_equal_ptr(parent, p->generator_late); | |
f4139308 LP |
182 | } |
183 | ||
e4fca67f LP |
184 | static int path_is_transient(const LookupPaths *p, const char *path) { |
185 | _cleanup_free_ char *parent = NULL; | |
186 | ||
187 | assert(p); | |
188 | assert(path); | |
189 | ||
190 | parent = dirname_malloc(path); | |
191 | if (!parent) | |
192 | return -ENOMEM; | |
193 | ||
24737c29 | 194 | return path_equal_ptr(parent, p->transient); |
e4fca67f LP |
195 | } |
196 | ||
344ca755 | 197 | static int path_is_control(const LookupPaths *p, const char *path) { |
e1c5c2b0 | 198 | _cleanup_free_ char *parent = NULL; |
0ec0deaa | 199 | |
e1c5c2b0 | 200 | assert(p); |
0ec0deaa LP |
201 | assert(path); |
202 | ||
344ca755 LP |
203 | parent = dirname_malloc(path); |
204 | if (!parent) | |
205 | return -ENOMEM; | |
0ec0deaa | 206 | |
24737c29 ZJS |
207 | return path_equal_ptr(parent, p->persistent_control) || |
208 | path_equal_ptr(parent, p->runtime_control); | |
344ca755 LP |
209 | } |
210 | ||
dfead90d | 211 | static int path_is_config(const LookupPaths *p, const char *path, bool check_parent) { |
344ca755 LP |
212 | _cleanup_free_ char *parent = NULL; |
213 | ||
214 | assert(p); | |
215 | assert(path); | |
216 | ||
d7604756 ZJS |
217 | /* Note that we do *not* have generic checks for /etc or /run in place, since with |
218 | * them we couldn't discern configuration from transient or generated units */ | |
0ec0deaa | 219 | |
dfead90d LP |
220 | if (check_parent) { |
221 | parent = dirname_malloc(path); | |
222 | if (!parent) | |
223 | return -ENOMEM; | |
224 | ||
225 | path = parent; | |
226 | } | |
0ec0deaa | 227 | |
dfead90d LP |
228 | return path_equal_ptr(path, p->persistent_config) || |
229 | path_equal_ptr(path, p->runtime_config); | |
0ec0deaa LP |
230 | } |
231 | ||
dfead90d | 232 | static int path_is_runtime(const LookupPaths *p, const char *path, bool check_parent) { |
385eb996 | 233 | _cleanup_free_ char *parent = NULL; |
401017e0 | 234 | const char *rpath; |
385eb996 LP |
235 | |
236 | assert(p); | |
237 | assert(path); | |
238 | ||
d7604756 ZJS |
239 | /* Everything in /run is considered runtime. On top of that we also add |
240 | * explicit checks for the various runtime directories, as safety net. */ | |
344ca755 | 241 | |
401017e0 LP |
242 | rpath = skip_root(p, path); |
243 | if (rpath && path_startswith(rpath, "/run")) | |
385eb996 LP |
244 | return true; |
245 | ||
dfead90d LP |
246 | if (check_parent) { |
247 | parent = dirname_malloc(path); | |
248 | if (!parent) | |
249 | return -ENOMEM; | |
385eb996 | 250 | |
dfead90d LP |
251 | path = parent; |
252 | } | |
253 | ||
254 | return path_equal_ptr(path, p->runtime_config) || | |
255 | path_equal_ptr(path, p->generator) || | |
256 | path_equal_ptr(path, p->generator_early) || | |
257 | path_equal_ptr(path, p->generator_late) || | |
258 | path_equal_ptr(path, p->transient) || | |
259 | path_equal_ptr(path, p->runtime_control); | |
344ca755 LP |
260 | } |
261 | ||
262 | static int path_is_vendor(const LookupPaths *p, const char *path) { | |
263 | const char *rpath; | |
264 | ||
265 | assert(p); | |
266 | assert(path); | |
267 | ||
268 | rpath = skip_root(p, path); | |
269 | if (!rpath) | |
270 | return 0; | |
271 | ||
272 | if (path_startswith(rpath, "/usr")) | |
273 | return true; | |
274 | ||
275 | #ifdef HAVE_SPLIT_USR | |
276 | if (path_startswith(rpath, "/lib")) | |
277 | return true; | |
278 | #endif | |
279 | ||
280 | return path_equal(rpath, SYSTEM_DATA_UNIT_PATH); | |
385eb996 LP |
281 | } |
282 | ||
0ec0deaa LP |
283 | int unit_file_changes_add( |
284 | UnitFileChange **changes, | |
285 | unsigned *n_changes, | |
286 | UnitFileChangeType type, | |
287 | const char *path, | |
288 | const char *source) { | |
289 | ||
12bf0ae4 | 290 | _cleanup_free_ char *p = NULL, *s = NULL; |
0ec0deaa | 291 | UnitFileChange *c; |
0ec0deaa LP |
292 | |
293 | assert(path); | |
294 | assert(!changes == !n_changes); | |
295 | ||
296 | if (!changes) | |
297 | return 0; | |
298 | ||
299 | c = realloc(*changes, (*n_changes + 1) * sizeof(UnitFileChange)); | |
300 | if (!c) | |
301 | return -ENOMEM; | |
0ec0deaa | 302 | *changes = c; |
0ec0deaa | 303 | |
12bf0ae4 ZJS |
304 | p = strdup(path); |
305 | if (source) | |
306 | s = strdup(source); | |
0ec0deaa | 307 | |
12bf0ae4 ZJS |
308 | if (!p || (source && !s)) |
309 | return -ENOMEM; | |
0ec0deaa | 310 | |
12bf0ae4 ZJS |
311 | path_kill_slashes(p); |
312 | if (s) | |
313 | path_kill_slashes(s); | |
0ec0deaa | 314 | |
12bf0ae4 ZJS |
315 | c[*n_changes] = (UnitFileChange) { type, p, s }; |
316 | p = s = NULL; | |
317 | (*n_changes) ++; | |
0ec0deaa LP |
318 | return 0; |
319 | } | |
320 | ||
321 | void unit_file_changes_free(UnitFileChange *changes, unsigned n_changes) { | |
322 | unsigned i; | |
323 | ||
324 | assert(changes || n_changes == 0); | |
325 | ||
0ec0deaa LP |
326 | for (i = 0; i < n_changes; i++) { |
327 | free(changes[i].path); | |
328 | free(changes[i].source); | |
329 | } | |
330 | ||
331 | free(changes); | |
332 | } | |
333 | ||
af3d8113 ZJS |
334 | void unit_file_dump_changes(int r, const char *verb, const UnitFileChange *changes, unsigned n_changes, bool quiet) { |
335 | unsigned i; | |
336 | bool logged = false; | |
337 | ||
338 | assert(changes || n_changes == 0); | |
339 | /* If verb is not specified, errors are not allowed! */ | |
340 | assert(verb || r >= 0); | |
341 | ||
342 | for (i = 0; i < n_changes; i++) { | |
343 | assert(verb || changes[i].type >= 0); | |
344 | ||
345 | switch(changes[i].type) { | |
346 | case UNIT_FILE_SYMLINK: | |
347 | if (!quiet) | |
a760db24 ZJS |
348 | log_info("Created symlink %s %s %s.", |
349 | changes[i].path, | |
323b7dc9 | 350 | special_glyph(ARROW), |
a760db24 | 351 | changes[i].source); |
af3d8113 ZJS |
352 | break; |
353 | case UNIT_FILE_UNLINK: | |
354 | if (!quiet) | |
355 | log_info("Removed %s.", changes[i].path); | |
356 | break; | |
357 | case UNIT_FILE_IS_MASKED: | |
358 | if (!quiet) | |
359 | log_info("Unit %s is masked, ignoring.", changes[i].path); | |
360 | break; | |
893275df ZJS |
361 | case UNIT_FILE_IS_DANGLING: |
362 | if (!quiet) | |
363 | log_info("Unit %s is an alias to a unit that is not present, ignoring.", | |
364 | changes[i].path); | |
365 | break; | |
af3d8113 ZJS |
366 | case -EEXIST: |
367 | if (changes[i].source) | |
368 | log_error_errno(changes[i].type, | |
369 | "Failed to %s unit, file %s already exists and is a symlink to %s.", | |
370 | verb, changes[i].path, changes[i].source); | |
371 | else | |
372 | log_error_errno(changes[i].type, | |
373 | "Failed to %s unit, file %s already exists.", | |
374 | verb, changes[i].path); | |
375 | logged = true; | |
376 | break; | |
377 | case -ERFKILL: | |
378 | log_error_errno(changes[i].type, "Failed to %s unit, unit %s is masked.", | |
379 | verb, changes[i].path); | |
380 | logged = true; | |
381 | break; | |
382 | case -EADDRNOTAVAIL: | |
383 | log_error_errno(changes[i].type, "Failed to %s unit, unit %s is transient or generated.", | |
384 | verb, changes[i].path); | |
385 | logged = true; | |
386 | break; | |
387 | case -ELOOP: | |
388 | log_error_errno(changes[i].type, "Failed to %s unit, refusing to operate on linked unit file %s", | |
389 | verb, changes[i].path); | |
390 | logged = true; | |
391 | break; | |
637d6e5b LP |
392 | |
393 | case -ENOENT: | |
394 | log_error_errno(changes[i].type, "Failed to %s unit, unit %s does not exist.", verb, changes[i].path); | |
395 | logged = true; | |
396 | break; | |
397 | ||
af3d8113 ZJS |
398 | default: |
399 | assert(changes[i].type < 0); | |
400 | log_error_errno(changes[i].type, "Failed to %s unit, file %s: %m.", | |
401 | verb, changes[i].path); | |
402 | logged = true; | |
403 | } | |
404 | } | |
405 | ||
406 | if (r < 0 && !logged) | |
407 | log_error_errno(r, "Failed to %s: %m.", verb); | |
408 | } | |
409 | ||
25ea9277 ZJS |
410 | /** |
411 | * Checks if two paths or symlinks from wd are the same, when root is the root of the filesystem. | |
412 | * wc should be the full path in the host file system. | |
413 | */ | |
414 | static bool chroot_symlinks_same(const char *root, const char *wd, const char *a, const char *b) { | |
415 | assert(path_is_absolute(wd)); | |
416 | ||
417 | /* This will give incorrect results if the paths are relative and go outside | |
418 | * of the chroot. False negatives are possible. */ | |
419 | ||
ae9efab7 ZJS |
420 | if (!root) |
421 | root = "/"; | |
422 | ||
25ea9277 ZJS |
423 | a = strjoina(path_is_absolute(a) ? root : wd, "/", a); |
424 | b = strjoina(path_is_absolute(b) ? root : wd, "/", b); | |
e3f791a2 | 425 | return path_equal_or_files_same(a, b, 0); |
25ea9277 ZJS |
426 | } |
427 | ||
0ec0deaa | 428 | static int create_symlink( |
60bec8e4 | 429 | const LookupPaths *paths, |
0ec0deaa LP |
430 | const char *old_path, |
431 | const char *new_path, | |
432 | bool force, | |
433 | UnitFileChange **changes, | |
434 | unsigned *n_changes) { | |
435 | ||
25ea9277 | 436 | _cleanup_free_ char *dest = NULL, *dirname = NULL; |
60bec8e4 | 437 | const char *rp; |
0ec0deaa LP |
438 | int r; |
439 | ||
440 | assert(old_path); | |
441 | assert(new_path); | |
442 | ||
60bec8e4 ZJS |
443 | rp = skip_root(paths, old_path); |
444 | if (rp) | |
445 | old_path = rp; | |
446 | ||
0ec0deaa LP |
447 | /* Actually create a symlink, and remember that we did. Is |
448 | * smart enough to check if there's already a valid symlink in | |
85158303 ZJS |
449 | * place. |
450 | * | |
451 | * Returns 1 if a symlink was created or already exists and points to | |
452 | * the right place, or negative on error. | |
453 | */ | |
0ec0deaa LP |
454 | |
455 | mkdir_parents_label(new_path, 0755); | |
456 | ||
457 | if (symlink(old_path, new_path) >= 0) { | |
458 | unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path); | |
3de15214 | 459 | return 1; |
0ec0deaa LP |
460 | } |
461 | ||
af3d8113 ZJS |
462 | if (errno != EEXIST) { |
463 | unit_file_changes_add(changes, n_changes, -errno, new_path, NULL); | |
0ec0deaa | 464 | return -errno; |
af3d8113 | 465 | } |
0ec0deaa LP |
466 | |
467 | r = readlink_malloc(new_path, &dest); | |
7d782f26 ZJS |
468 | if (r < 0) { |
469 | /* translate EINVAL (non-symlink exists) to EEXIST */ | |
470 | if (r == -EINVAL) | |
471 | r = -EEXIST; | |
472 | ||
473 | unit_file_changes_add(changes, n_changes, r, new_path, NULL); | |
0ec0deaa | 474 | return r; |
7d782f26 | 475 | } |
0ec0deaa | 476 | |
25ea9277 ZJS |
477 | dirname = dirname_malloc(new_path); |
478 | if (!dirname) | |
479 | return -ENOMEM; | |
480 | ||
481 | if (chroot_symlinks_same(paths->root_dir, dirname, dest, old_path)) | |
85158303 | 482 | return 1; |
0ec0deaa | 483 | |
af3d8113 ZJS |
484 | if (!force) { |
485 | unit_file_changes_add(changes, n_changes, -EEXIST, new_path, dest); | |
0ec0deaa | 486 | return -EEXIST; |
af3d8113 | 487 | } |
0ec0deaa LP |
488 | |
489 | r = symlink_atomic(old_path, new_path); | |
7d782f26 ZJS |
490 | if (r < 0) { |
491 | unit_file_changes_add(changes, n_changes, r, new_path, NULL); | |
0ec0deaa | 492 | return r; |
7d782f26 | 493 | } |
0ec0deaa LP |
494 | |
495 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, new_path, NULL); | |
496 | unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path); | |
497 | ||
3de15214 | 498 | return 1; |
0ec0deaa LP |
499 | } |
500 | ||
83096483 LP |
501 | static int mark_symlink_for_removal( |
502 | Set **remove_symlinks_to, | |
503 | const char *p) { | |
504 | ||
505 | char *n; | |
506 | int r; | |
507 | ||
508 | assert(p); | |
509 | ||
d5099efc | 510 | r = set_ensure_allocated(remove_symlinks_to, &string_hash_ops); |
83096483 LP |
511 | if (r < 0) |
512 | return r; | |
513 | ||
514 | n = strdup(p); | |
515 | if (!n) | |
516 | return -ENOMEM; | |
517 | ||
518 | path_kill_slashes(n); | |
519 | ||
ef42202a | 520 | r = set_consume(*remove_symlinks_to, n); |
d25e100b LP |
521 | if (r == -EEXIST) |
522 | return 0; | |
ef42202a | 523 | if (r < 0) |
d25e100b | 524 | return r; |
83096483 | 525 | |
0ec0deaa | 526 | return 1; |
83096483 LP |
527 | } |
528 | ||
529 | static int remove_marked_symlinks_fd( | |
530 | Set *remove_symlinks_to, | |
531 | int fd, | |
532 | const char *path, | |
533 | const char *config_path, | |
401017e0 | 534 | const LookupPaths *lp, |
3b3557c4 | 535 | bool dry_run, |
0ec0deaa | 536 | bool *restart, |
83096483 | 537 | UnitFileChange **changes, |
0ec0deaa | 538 | unsigned *n_changes) { |
83096483 | 539 | |
7fd1b19b | 540 | _cleanup_closedir_ DIR *d = NULL; |
d25e100b | 541 | struct dirent *de; |
bcafe923 | 542 | int r = 0; |
83096483 LP |
543 | |
544 | assert(remove_symlinks_to); | |
545 | assert(fd >= 0); | |
546 | assert(path); | |
547 | assert(config_path); | |
401017e0 | 548 | assert(lp); |
0ec0deaa | 549 | assert(restart); |
83096483 LP |
550 | |
551 | d = fdopendir(fd); | |
552 | if (!d) { | |
03e334a1 | 553 | safe_close(fd); |
83096483 LP |
554 | return -errno; |
555 | } | |
556 | ||
557 | rewinddir(d); | |
558 | ||
d25e100b | 559 | FOREACH_DIRENT(de, d, return -errno) { |
83096483 LP |
560 | |
561 | dirent_ensure_type(d, de); | |
562 | ||
563 | if (de->d_type == DT_DIR) { | |
7fd1b19b | 564 | _cleanup_free_ char *p = NULL; |
d25e100b | 565 | int nfd, q; |
83096483 LP |
566 | |
567 | nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
568 | if (nfd < 0) { | |
569 | if (errno == ENOENT) | |
570 | continue; | |
571 | ||
572 | if (r == 0) | |
573 | r = -errno; | |
574 | continue; | |
575 | } | |
576 | ||
577 | p = path_make_absolute(de->d_name, path); | |
578 | if (!p) { | |
03e334a1 | 579 | safe_close(nfd); |
d9e5e694 | 580 | return -ENOMEM; |
83096483 LP |
581 | } |
582 | ||
583 | /* This will close nfd, regardless whether it succeeds or not */ | |
3b3557c4 | 584 | q = remove_marked_symlinks_fd(remove_symlinks_to, nfd, p, config_path, lp, dry_run, restart, changes, n_changes); |
bcafe923 | 585 | if (q < 0 && r == 0) |
83096483 LP |
586 | r = q; |
587 | ||
588 | } else if (de->d_type == DT_LNK) { | |
7fd1b19b | 589 | _cleanup_free_ char *p = NULL, *dest = NULL; |
401017e0 | 590 | const char *rp; |
83096483 | 591 | bool found; |
0ec0deaa | 592 | int q; |
83096483 | 593 | |
7410616c | 594 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
bcafe923 LP |
595 | continue; |
596 | ||
83096483 | 597 | p = path_make_absolute(de->d_name, path); |
d9e5e694 ZJS |
598 | if (!p) |
599 | return -ENOMEM; | |
af3d8113 | 600 | path_kill_slashes(p); |
83096483 | 601 | |
0ec0deaa | 602 | q = readlink_malloc(p, &dest); |
401017e0 LP |
603 | if (q == -ENOENT) |
604 | continue; | |
83096483 | 605 | if (q < 0) { |
83096483 LP |
606 | if (r == 0) |
607 | r = q; | |
608 | continue; | |
609 | } | |
610 | ||
401017e0 LP |
611 | /* We remove all links pointing to a file or path that is marked, as well as all files sharing |
612 | * the same name as a file that is marked. */ | |
0ec0deaa | 613 | |
596fc263 | 614 | found = set_contains(remove_symlinks_to, dest) || |
0ec0deaa LP |
615 | set_contains(remove_symlinks_to, basename(dest)) || |
616 | set_contains(remove_symlinks_to, de->d_name); | |
83096483 | 617 | |
1dacfd2a LP |
618 | if (!found) |
619 | continue; | |
83096483 | 620 | |
3b3557c4 JS |
621 | if (!dry_run) { |
622 | if (unlinkat(fd, de->d_name, 0) < 0 && errno != ENOENT) { | |
623 | if (r == 0) | |
624 | r = -errno; | |
625 | unit_file_changes_add(changes, n_changes, -errno, p, NULL); | |
626 | continue; | |
627 | } | |
bcafe923 | 628 | |
3b3557c4 JS |
629 | (void) rmdir_parents(p, config_path); |
630 | } | |
83096483 | 631 | |
0ec0deaa | 632 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, p, NULL); |
1dacfd2a | 633 | |
12bf0ae4 ZJS |
634 | /* Now, remember the full path (but with the root prefix removed) of |
635 | * the symlink we just removed, and remove any symlinks to it, too. */ | |
401017e0 LP |
636 | |
637 | rp = skip_root(lp, p); | |
638 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: p); | |
0ec0deaa LP |
639 | if (q < 0) |
640 | return q; | |
3b3557c4 | 641 | if (q > 0 && !dry_run) |
0ec0deaa | 642 | *restart = true; |
83096483 LP |
643 | } |
644 | } | |
645 | ||
83096483 LP |
646 | return r; |
647 | } | |
648 | ||
649 | static int remove_marked_symlinks( | |
650 | Set *remove_symlinks_to, | |
651 | const char *config_path, | |
401017e0 | 652 | const LookupPaths *lp, |
3b3557c4 | 653 | bool dry_run, |
83096483 | 654 | UnitFileChange **changes, |
0ec0deaa | 655 | unsigned *n_changes) { |
83096483 | 656 | |
da39f6a6 | 657 | _cleanup_close_ int fd = -1; |
0ec0deaa | 658 | bool restart; |
d25e100b | 659 | int r = 0; |
83096483 LP |
660 | |
661 | assert(config_path); | |
401017e0 | 662 | assert(lp); |
83096483 LP |
663 | |
664 | if (set_size(remove_symlinks_to) <= 0) | |
665 | return 0; | |
666 | ||
67852d08 | 667 | fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC); |
83096483 | 668 | if (fd < 0) |
32d9493e | 669 | return errno == ENOENT ? 0 : -errno; |
83096483 LP |
670 | |
671 | do { | |
672 | int q, cfd; | |
0ec0deaa | 673 | restart = false; |
83096483 | 674 | |
ead34950 | 675 | cfd = fcntl(fd, F_DUPFD_CLOEXEC, 3); |
d25e100b LP |
676 | if (cfd < 0) |
677 | return -errno; | |
83096483 LP |
678 | |
679 | /* This takes possession of cfd and closes it */ | |
3b3557c4 | 680 | q = remove_marked_symlinks_fd(remove_symlinks_to, cfd, config_path, config_path, lp, dry_run, &restart, changes, n_changes); |
83096483 LP |
681 | if (r == 0) |
682 | r = q; | |
0ec0deaa | 683 | } while (restart); |
83096483 | 684 | |
83096483 LP |
685 | return r; |
686 | } | |
687 | ||
688 | static int find_symlinks_fd( | |
0ec0deaa | 689 | const char *root_dir, |
83096483 LP |
690 | const char *name, |
691 | int fd, | |
692 | const char *path, | |
693 | const char *config_path, | |
694 | bool *same_name_link) { | |
695 | ||
7fd1b19b | 696 | _cleanup_closedir_ DIR *d = NULL; |
d25e100b LP |
697 | struct dirent *de; |
698 | int r = 0; | |
83096483 LP |
699 | |
700 | assert(name); | |
701 | assert(fd >= 0); | |
702 | assert(path); | |
703 | assert(config_path); | |
704 | assert(same_name_link); | |
705 | ||
706 | d = fdopendir(fd); | |
707 | if (!d) { | |
03e334a1 | 708 | safe_close(fd); |
83096483 LP |
709 | return -errno; |
710 | } | |
711 | ||
d25e100b | 712 | FOREACH_DIRENT(de, d, return -errno) { |
83096483 LP |
713 | |
714 | dirent_ensure_type(d, de); | |
715 | ||
716 | if (de->d_type == DT_DIR) { | |
7fd1b19b | 717 | _cleanup_free_ char *p = NULL; |
d25e100b | 718 | int nfd, q; |
83096483 LP |
719 | |
720 | nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
721 | if (nfd < 0) { | |
722 | if (errno == ENOENT) | |
723 | continue; | |
724 | ||
725 | if (r == 0) | |
726 | r = -errno; | |
727 | continue; | |
728 | } | |
729 | ||
730 | p = path_make_absolute(de->d_name, path); | |
731 | if (!p) { | |
03e334a1 | 732 | safe_close(nfd); |
ea55addc | 733 | return -ENOMEM; |
83096483 LP |
734 | } |
735 | ||
736 | /* This will close nfd, regardless whether it succeeds or not */ | |
80cb9da3 | 737 | q = find_symlinks_fd(root_dir, name, nfd, p, config_path, same_name_link); |
ea55addc ZJS |
738 | if (q > 0) |
739 | return 1; | |
83096483 LP |
740 | if (r == 0) |
741 | r = q; | |
742 | ||
743 | } else if (de->d_type == DT_LNK) { | |
7fd1b19b | 744 | _cleanup_free_ char *p = NULL, *dest = NULL; |
83096483 LP |
745 | bool found_path, found_dest, b = false; |
746 | int q; | |
747 | ||
748 | /* Acquire symlink name */ | |
749 | p = path_make_absolute(de->d_name, path); | |
ea55addc ZJS |
750 | if (!p) |
751 | return -ENOMEM; | |
83096483 LP |
752 | |
753 | /* Acquire symlink destination */ | |
0ec0deaa | 754 | q = readlink_malloc(p, &dest); |
d25e100b LP |
755 | if (q == -ENOENT) |
756 | continue; | |
83096483 | 757 | if (q < 0) { |
83096483 LP |
758 | if (r == 0) |
759 | r = q; | |
760 | continue; | |
761 | } | |
762 | ||
0ec0deaa LP |
763 | /* Make absolute */ |
764 | if (!path_is_absolute(dest)) { | |
765 | char *x; | |
766 | ||
767 | x = prefix_root(root_dir, dest); | |
768 | if (!x) | |
769 | return -ENOMEM; | |
770 | ||
771 | free(dest); | |
772 | dest = x; | |
773 | } | |
774 | ||
83096483 LP |
775 | /* Check if the symlink itself matches what we |
776 | * are looking for */ | |
777 | if (path_is_absolute(name)) | |
778 | found_path = path_equal(p, name); | |
779 | else | |
780 | found_path = streq(de->d_name, name); | |
781 | ||
782 | /* Check if what the symlink points to | |
783 | * matches what we are looking for */ | |
784 | if (path_is_absolute(name)) | |
785 | found_dest = path_equal(dest, name); | |
786 | else | |
2b6bf07d | 787 | found_dest = streq(basename(dest), name); |
83096483 | 788 | |
83096483 | 789 | if (found_path && found_dest) { |
7fd1b19b | 790 | _cleanup_free_ char *t = NULL; |
83096483 LP |
791 | |
792 | /* Filter out same name links in the main | |
793 | * config path */ | |
794 | t = path_make_absolute(name, config_path); | |
ea55addc ZJS |
795 | if (!t) |
796 | return -ENOMEM; | |
83096483 LP |
797 | |
798 | b = path_equal(t, p); | |
83096483 LP |
799 | } |
800 | ||
83096483 LP |
801 | if (b) |
802 | *same_name_link = true; | |
ea55addc ZJS |
803 | else if (found_path || found_dest) |
804 | return 1; | |
83096483 LP |
805 | } |
806 | } | |
d25e100b LP |
807 | |
808 | return r; | |
83096483 LP |
809 | } |
810 | ||
811 | static int find_symlinks( | |
0ec0deaa | 812 | const char *root_dir, |
83096483 LP |
813 | const char *name, |
814 | const char *config_path, | |
815 | bool *same_name_link) { | |
816 | ||
817 | int fd; | |
818 | ||
819 | assert(name); | |
820 | assert(config_path); | |
821 | assert(same_name_link); | |
822 | ||
1cd1dab9 | 823 | fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC); |
d5891fda | 824 | if (fd < 0) { |
a1feacf7 | 825 | if (IN_SET(errno, ENOENT, ENOTDIR, EACCES)) |
d5891fda | 826 | return 0; |
83096483 | 827 | return -errno; |
d5891fda | 828 | } |
83096483 LP |
829 | |
830 | /* This takes possession of fd and closes it */ | |
80cb9da3 | 831 | return find_symlinks_fd(root_dir, name, fd, config_path, config_path, same_name_link); |
83096483 LP |
832 | } |
833 | ||
834 | static int find_symlinks_in_scope( | |
e1c5c2b0 | 835 | const LookupPaths *paths, |
83096483 LP |
836 | const char *name, |
837 | UnitFileState *state) { | |
838 | ||
dfead90d LP |
839 | bool same_name_link_runtime = false, same_name_link_config = false; |
840 | bool enabled_in_runtime = false, enabled_at_all = false; | |
841 | char **p; | |
0ec0deaa | 842 | int r; |
83096483 | 843 | |
e1c5c2b0 | 844 | assert(paths); |
83096483 LP |
845 | assert(name); |
846 | ||
dfead90d LP |
847 | STRV_FOREACH(p, paths->search_path) { |
848 | bool same_name_link = false; | |
849 | ||
80cb9da3 | 850 | r = find_symlinks(paths->root_dir, name, *p, &same_name_link); |
dfead90d LP |
851 | if (r < 0) |
852 | return r; | |
853 | if (r > 0) { | |
854 | /* We found symlinks in this dir? Yay! Let's see where precisely it is enabled. */ | |
855 | ||
856 | r = path_is_config(paths, *p, false); | |
857 | if (r < 0) | |
858 | return r; | |
859 | if (r > 0) { | |
860 | /* This is the best outcome, let's return it immediately. */ | |
861 | *state = UNIT_FILE_ENABLED; | |
862 | return 1; | |
863 | } | |
864 | ||
865 | r = path_is_runtime(paths, *p, false); | |
866 | if (r < 0) | |
867 | return r; | |
868 | if (r > 0) | |
869 | enabled_in_runtime = true; | |
870 | else | |
871 | enabled_at_all = true; | |
872 | ||
873 | } else if (same_name_link) { | |
874 | ||
875 | r = path_is_config(paths, *p, false); | |
876 | if (r < 0) | |
877 | return r; | |
878 | if (r > 0) | |
879 | same_name_link_config = true; | |
880 | else { | |
881 | r = path_is_runtime(paths, *p, false); | |
882 | if (r < 0) | |
883 | return r; | |
884 | if (r > 0) | |
885 | same_name_link_runtime = true; | |
886 | } | |
887 | } | |
83096483 LP |
888 | } |
889 | ||
dfead90d | 890 | if (enabled_in_runtime) { |
0ec0deaa | 891 | *state = UNIT_FILE_ENABLED_RUNTIME; |
dfead90d LP |
892 | return 1; |
893 | } | |
894 | ||
895 | /* Here's a special rule: if the unit we are looking for is an instance, and it symlinked in the search path | |
896 | * outside of runtime and configuration directory, then we consider it statically enabled. Note we do that only | |
897 | * for instance, not for regular names, as those are merely aliases, while instances explicitly instantiate | |
898 | * something, and hence are a much stronger concept. */ | |
899 | if (enabled_at_all && unit_name_is_valid(name, UNIT_NAME_INSTANCE)) { | |
900 | *state = UNIT_FILE_STATIC; | |
901 | return 1; | |
83096483 LP |
902 | } |
903 | ||
904 | /* Hmm, we didn't find it, but maybe we found the same name | |
905 | * link? */ | |
dfead90d | 906 | if (same_name_link_config) { |
0ec0deaa LP |
907 | *state = UNIT_FILE_LINKED; |
908 | return 1; | |
909 | } | |
83096483 LP |
910 | if (same_name_link_runtime) { |
911 | *state = UNIT_FILE_LINKED_RUNTIME; | |
912 | return 1; | |
83096483 LP |
913 | } |
914 | ||
915 | return 0; | |
916 | } | |
917 | ||
0ec0deaa | 918 | static void install_info_free(UnitFileInstallInfo *i) { |
83096483 | 919 | |
0ec0deaa LP |
920 | if (!i) |
921 | return; | |
83096483 | 922 | |
0ec0deaa LP |
923 | free(i->name); |
924 | free(i->path); | |
925 | strv_free(i->aliases); | |
926 | strv_free(i->wanted_by); | |
927 | strv_free(i->required_by); | |
928 | strv_free(i->also); | |
929 | free(i->default_instance); | |
930 | free(i->symlink_target); | |
931 | free(i); | |
932 | } | |
83096483 | 933 | |
0ec0deaa LP |
934 | static OrderedHashmap* install_info_hashmap_free(OrderedHashmap *m) { |
935 | UnitFileInstallInfo *i; | |
83096483 | 936 | |
0ec0deaa LP |
937 | if (!m) |
938 | return NULL; | |
83096483 | 939 | |
0ec0deaa LP |
940 | while ((i = ordered_hashmap_steal_first(m))) |
941 | install_info_free(i); | |
83096483 | 942 | |
0ec0deaa LP |
943 | return ordered_hashmap_free(m); |
944 | } | |
83096483 | 945 | |
0ec0deaa LP |
946 | static void install_context_done(InstallContext *c) { |
947 | assert(c); | |
83096483 | 948 | |
0ec0deaa LP |
949 | c->will_process = install_info_hashmap_free(c->will_process); |
950 | c->have_processed = install_info_hashmap_free(c->have_processed); | |
951 | } | |
83096483 | 952 | |
0ec0deaa LP |
953 | static UnitFileInstallInfo *install_info_find(InstallContext *c, const char *name) { |
954 | UnitFileInstallInfo *i; | |
83096483 | 955 | |
0ec0deaa LP |
956 | i = ordered_hashmap_get(c->have_processed, name); |
957 | if (i) | |
958 | return i; | |
83096483 | 959 | |
0ec0deaa | 960 | return ordered_hashmap_get(c->will_process, name); |
83096483 LP |
961 | } |
962 | ||
af3d8113 ZJS |
963 | static int install_info_may_process( |
964 | UnitFileInstallInfo *i, | |
965 | const LookupPaths *paths, | |
966 | UnitFileChange **changes, | |
967 | unsigned *n_changes) { | |
76adb5b8 LP |
968 | assert(i); |
969 | assert(paths); | |
970 | ||
047d91f9 ZJS |
971 | /* Checks whether the loaded unit file is one we should process, or is masked, |
972 | * transient or generated and thus not subject to enable/disable operations. */ | |
76adb5b8 | 973 | |
af3d8113 ZJS |
974 | if (i->type == UNIT_FILE_TYPE_MASKED) { |
975 | unit_file_changes_add(changes, n_changes, -ERFKILL, i->path, NULL); | |
76ec966f | 976 | return -ERFKILL; |
af3d8113 ZJS |
977 | } |
978 | if (path_is_generator(paths, i->path) || | |
979 | path_is_transient(paths, i->path)) { | |
980 | unit_file_changes_add(changes, n_changes, -EADDRNOTAVAIL, i->path, NULL); | |
76adb5b8 | 981 | return -EADDRNOTAVAIL; |
af3d8113 | 982 | } |
76adb5b8 LP |
983 | |
984 | return 0; | |
985 | } | |
986 | ||
ff56349d ZJS |
987 | /** |
988 | * Adds a new UnitFileInstallInfo entry under name in the InstallContext.will_process | |
989 | * hashmap, or retrieves the existing one if already present. | |
19539807 ZJS |
990 | * |
991 | * Returns negative on error, 0 if the unit was already known, 1 otherwise. | |
ff56349d | 992 | */ |
83096483 LP |
993 | static int install_info_add( |
994 | InstallContext *c, | |
995 | const char *name, | |
0ec0deaa | 996 | const char *path, |
19539807 | 997 | bool auxiliary, |
0ec0deaa LP |
998 | UnitFileInstallInfo **ret) { |
999 | ||
cab6235f | 1000 | UnitFileInstallInfo *i = NULL; |
83096483 LP |
1001 | int r; |
1002 | ||
1003 | assert(c); | |
1004 | assert(name || path); | |
1005 | ||
1006 | if (!name) | |
2b6bf07d | 1007 | name = basename(path); |
83096483 | 1008 | |
7410616c | 1009 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
83096483 LP |
1010 | return -EINVAL; |
1011 | ||
0ec0deaa LP |
1012 | i = install_info_find(c, name); |
1013 | if (i) { | |
19539807 ZJS |
1014 | i->auxiliary = i->auxiliary && auxiliary; |
1015 | ||
0ec0deaa LP |
1016 | if (ret) |
1017 | *ret = i; | |
83096483 | 1018 | return 0; |
0ec0deaa | 1019 | } |
83096483 | 1020 | |
0ec0deaa | 1021 | r = ordered_hashmap_ensure_allocated(&c->will_process, &string_hash_ops); |
83096483 LP |
1022 | if (r < 0) |
1023 | return r; | |
1024 | ||
cab6235f | 1025 | i = new0(UnitFileInstallInfo, 1); |
83096483 LP |
1026 | if (!i) |
1027 | return -ENOMEM; | |
0ec0deaa | 1028 | i->type = _UNIT_FILE_TYPE_INVALID; |
19539807 | 1029 | i->auxiliary = auxiliary; |
83096483 LP |
1030 | |
1031 | i->name = strdup(name); | |
1032 | if (!i->name) { | |
1033 | r = -ENOMEM; | |
1034 | goto fail; | |
1035 | } | |
1036 | ||
1037 | if (path) { | |
1038 | i->path = strdup(path); | |
1039 | if (!i->path) { | |
1040 | r = -ENOMEM; | |
1041 | goto fail; | |
1042 | } | |
1043 | } | |
1044 | ||
0ec0deaa | 1045 | r = ordered_hashmap_put(c->will_process, i->name, i); |
83096483 LP |
1046 | if (r < 0) |
1047 | goto fail; | |
1048 | ||
0ec0deaa LP |
1049 | if (ret) |
1050 | *ret = i; | |
1051 | ||
19539807 | 1052 | return 1; |
83096483 LP |
1053 | |
1054 | fail: | |
d25e100b | 1055 | install_info_free(i); |
83096483 LP |
1056 | return r; |
1057 | } | |
1058 | ||
a7724589 ZJS |
1059 | static int config_parse_alias( |
1060 | const char *unit, | |
1061 | const char *filename, | |
1062 | unsigned line, | |
1063 | const char *section, | |
1064 | unsigned section_line, | |
1065 | const char *lvalue, | |
1066 | int ltype, | |
1067 | const char *rvalue, | |
1068 | void *data, | |
1069 | void *userdata) { | |
1070 | ||
1071 | const char *name; | |
1072 | UnitType type; | |
1073 | ||
1074 | assert(filename); | |
1075 | assert(lvalue); | |
1076 | assert(rvalue); | |
1077 | ||
1078 | name = basename(filename); | |
1079 | type = unit_name_to_type(name); | |
1080 | if (!unit_type_may_alias(type)) | |
1081 | return log_syntax(unit, LOG_WARNING, filename, line, 0, | |
3b8769bd | 1082 | "Alias= is not allowed for %s units, ignoring.", |
a7724589 ZJS |
1083 | unit_type_to_string(type)); |
1084 | ||
1085 | return config_parse_strv(unit, filename, line, section, section_line, | |
1086 | lvalue, ltype, rvalue, data, userdata); | |
1087 | } | |
1088 | ||
d54c4993 LP |
1089 | static int config_parse_also( |
1090 | const char *unit, | |
1091 | const char *filename, | |
1092 | unsigned line, | |
1093 | const char *section, | |
1094 | unsigned section_line, | |
1095 | const char *lvalue, | |
1096 | int ltype, | |
1097 | const char *rvalue, | |
1098 | void *data, | |
1099 | void *userdata) { | |
83096483 | 1100 | |
19539807 | 1101 | UnitFileInstallInfo *info = userdata, *alsoinfo = NULL; |
0ec0deaa LP |
1102 | InstallContext *c = data; |
1103 | int r; | |
83096483 LP |
1104 | |
1105 | assert(filename); | |
1106 | assert(lvalue); | |
1107 | assert(rvalue); | |
1108 | ||
0ec0deaa | 1109 | for (;;) { |
a6612e65 | 1110 | _cleanup_free_ char *word = NULL, *printed = NULL; |
03da6513 | 1111 | |
0ec0deaa LP |
1112 | r = extract_first_word(&rvalue, &word, NULL, 0); |
1113 | if (r < 0) | |
1114 | return r; | |
03da6513 SS |
1115 | if (r == 0) |
1116 | break; | |
83096483 | 1117 | |
a6612e65 | 1118 | r = install_full_printf(info, word, &printed); |
d9e5e694 | 1119 | if (r < 0) |
83096483 | 1120 | return r; |
aedd4012 | 1121 | |
a6612e65 ZJS |
1122 | if (!unit_name_is_valid(printed, UNIT_NAME_ANY)) |
1123 | return -EINVAL; | |
1124 | ||
1125 | r = install_info_add(c, printed, NULL, true, &alsoinfo); | |
d9e5e694 | 1126 | if (r < 0) |
83096483 | 1127 | return r; |
aedd4012 | 1128 | |
a6612e65 | 1129 | r = strv_push(&info->also, printed); |
aedd4012 JS |
1130 | if (r < 0) |
1131 | return r; | |
0ec0deaa | 1132 | |
a6612e65 | 1133 | printed = NULL; |
83096483 LP |
1134 | } |
1135 | ||
1136 | return 0; | |
1137 | } | |
1138 | ||
d54c4993 LP |
1139 | static int config_parse_default_instance( |
1140 | const char *unit, | |
1141 | const char *filename, | |
1142 | unsigned line, | |
1143 | const char *section, | |
1144 | unsigned section_line, | |
1145 | const char *lvalue, | |
1146 | int ltype, | |
1147 | const char *rvalue, | |
1148 | void *data, | |
1149 | void *userdata) { | |
1150 | ||
cab6235f | 1151 | UnitFileInstallInfo *i = data; |
6597fa61 | 1152 | const char *name; |
d7604756 | 1153 | _cleanup_free_ char *printed = NULL; |
d54c4993 LP |
1154 | int r; |
1155 | ||
1156 | assert(filename); | |
1157 | assert(lvalue); | |
1158 | assert(rvalue); | |
1159 | ||
6597fa61 ZJS |
1160 | name = basename(filename); |
1161 | if (unit_name_is_valid(name, UNIT_NAME_INSTANCE)) | |
1162 | /* When enabling an instance, we might be using a template unit file, | |
1163 | * but we should ignore DefaultInstance silently. */ | |
1164 | return 0; | |
1165 | if (!unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) | |
1166 | return log_syntax(unit, LOG_WARNING, filename, line, 0, | |
3b8769bd | 1167 | "DefaultInstance= only makes sense for template units, ignoring."); |
6597fa61 | 1168 | |
d54c4993 LP |
1169 | r = install_full_printf(i, rvalue, &printed); |
1170 | if (r < 0) | |
1171 | return r; | |
1172 | ||
d7604756 | 1173 | if (!unit_instance_is_valid(printed)) |
d54c4993 LP |
1174 | return -EINVAL; |
1175 | ||
3b319885 | 1176 | return free_and_replace(i->default_instance, printed); |
d54c4993 LP |
1177 | } |
1178 | ||
83096483 LP |
1179 | static int unit_file_load( |
1180 | InstallContext *c, | |
cab6235f | 1181 | UnitFileInstallInfo *info, |
83096483 | 1182 | const char *path, |
0ec0deaa | 1183 | SearchFlags flags) { |
83096483 | 1184 | |
f975e971 | 1185 | const ConfigTableItem items[] = { |
a7724589 | 1186 | { "Install", "Alias", config_parse_alias, 0, &info->aliases }, |
d54c4993 LP |
1187 | { "Install", "WantedBy", config_parse_strv, 0, &info->wanted_by }, |
1188 | { "Install", "RequiredBy", config_parse_strv, 0, &info->required_by }, | |
1189 | { "Install", "DefaultInstance", config_parse_default_instance, 0, info }, | |
1190 | { "Install", "Also", config_parse_also, 0, c }, | |
d54c4993 | 1191 | {} |
83096483 LP |
1192 | }; |
1193 | ||
133e5b36 ZJS |
1194 | const char *name; |
1195 | UnitType type; | |
7fd1b19b | 1196 | _cleanup_fclose_ FILE *f = NULL; |
0ec0deaa LP |
1197 | _cleanup_close_ int fd = -1; |
1198 | struct stat st; | |
1199 | int r; | |
83096483 | 1200 | |
83096483 LP |
1201 | assert(info); |
1202 | assert(path); | |
1203 | ||
133e5b36 ZJS |
1204 | name = basename(path); |
1205 | type = unit_name_to_type(name); | |
1206 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE|UNIT_NAME_INSTANCE) && | |
1207 | !unit_type_may_template(type)) | |
1208 | return log_error_errno(EINVAL, "Unit type %s cannot be templated.", unit_type_to_string(type)); | |
1209 | ||
0ec0deaa LP |
1210 | if (!(flags & SEARCH_LOAD)) { |
1211 | r = lstat(path, &st); | |
1212 | if (r < 0) | |
d25e100b LP |
1213 | return -errno; |
1214 | ||
0ec0deaa LP |
1215 | if (null_or_empty(&st)) |
1216 | info->type = UNIT_FILE_TYPE_MASKED; | |
1217 | else if (S_ISREG(st.st_mode)) | |
1218 | info->type = UNIT_FILE_TYPE_REGULAR; | |
1219 | else if (S_ISLNK(st.st_mode)) | |
1220 | return -ELOOP; | |
1221 | else if (S_ISDIR(st.st_mode)) | |
1222 | return -EISDIR; | |
1223 | else | |
1224 | return -ENOTTY; | |
1225 | ||
d25e100b | 1226 | return 0; |
e94937df LN |
1227 | } |
1228 | ||
047d91f9 ZJS |
1229 | /* c is only needed if we actually load the file */ |
1230 | assert(c); | |
1231 | ||
0ec0deaa | 1232 | fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW); |
83096483 LP |
1233 | if (fd < 0) |
1234 | return -errno; | |
0ec0deaa LP |
1235 | if (fstat(fd, &st) < 0) |
1236 | return -errno; | |
1237 | if (null_or_empty(&st)) { | |
d986e364 | 1238 | info->type = UNIT_FILE_TYPE_MASKED; |
0ec0deaa LP |
1239 | return 0; |
1240 | } | |
1241 | if (S_ISDIR(st.st_mode)) | |
1242 | return -EISDIR; | |
1243 | if (!S_ISREG(st.st_mode)) | |
1244 | return -ENOTTY; | |
83096483 LP |
1245 | |
1246 | f = fdopen(fd, "re"); | |
0ec0deaa LP |
1247 | if (!f) |
1248 | return -errno; | |
1249 | fd = -1; | |
83096483 | 1250 | |
36f822c4 ZJS |
1251 | r = config_parse(NULL, path, f, |
1252 | NULL, | |
1253 | config_item_table_lookup, items, | |
1254 | true, true, false, info); | |
83096483 | 1255 | if (r < 0) |
59108fbe | 1256 | return log_debug_errno(r, "Failed to parse %s: %m", info->name); |
83096483 | 1257 | |
0ec0deaa | 1258 | info->type = UNIT_FILE_TYPE_REGULAR; |
aedd4012 | 1259 | |
78d54bd4 | 1260 | return |
693eb9a2 LP |
1261 | (int) strv_length(info->aliases) + |
1262 | (int) strv_length(info->wanted_by) + | |
1263 | (int) strv_length(info->required_by); | |
83096483 LP |
1264 | } |
1265 | ||
0ec0deaa LP |
1266 | static int unit_file_load_or_readlink( |
1267 | InstallContext *c, | |
1268 | UnitFileInstallInfo *info, | |
1269 | const char *path, | |
1270 | const char *root_dir, | |
1271 | SearchFlags flags) { | |
1272 | ||
401017e0 | 1273 | _cleanup_free_ char *target = NULL; |
0ec0deaa LP |
1274 | int r; |
1275 | ||
401017e0 | 1276 | r = unit_file_load(c, info, path, flags); |
0ec0deaa LP |
1277 | if (r != -ELOOP) |
1278 | return r; | |
1279 | ||
1280 | /* This is a symlink, let's read it. */ | |
1281 | ||
401017e0 | 1282 | r = readlink_malloc(path, &target); |
0ec0deaa LP |
1283 | if (r < 0) |
1284 | return r; | |
1285 | ||
401017e0 | 1286 | if (path_equal(target, "/dev/null")) |
0ec0deaa LP |
1287 | info->type = UNIT_FILE_TYPE_MASKED; |
1288 | else { | |
1289 | const char *bn; | |
1290 | UnitType a, b; | |
1291 | ||
401017e0 | 1292 | bn = basename(target); |
0ec0deaa LP |
1293 | |
1294 | if (unit_name_is_valid(info->name, UNIT_NAME_PLAIN)) { | |
1295 | ||
1296 | if (!unit_name_is_valid(bn, UNIT_NAME_PLAIN)) | |
1297 | return -EINVAL; | |
1298 | ||
1299 | } else if (unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { | |
1300 | ||
1301 | if (!unit_name_is_valid(bn, UNIT_NAME_INSTANCE|UNIT_NAME_TEMPLATE)) | |
1302 | return -EINVAL; | |
1303 | ||
1304 | } else if (unit_name_is_valid(info->name, UNIT_NAME_TEMPLATE)) { | |
1305 | ||
1306 | if (!unit_name_is_valid(bn, UNIT_NAME_TEMPLATE)) | |
1307 | return -EINVAL; | |
1308 | } else | |
1309 | return -EINVAL; | |
1310 | ||
1311 | /* Enforce that the symlink destination does not | |
1312 | * change the unit file type. */ | |
1313 | ||
1314 | a = unit_name_to_type(info->name); | |
1315 | b = unit_name_to_type(bn); | |
1316 | if (a < 0 || b < 0 || a != b) | |
1317 | return -EINVAL; | |
1318 | ||
401017e0 LP |
1319 | if (path_is_absolute(target)) |
1320 | /* This is an absolute path, prefix the root so that we always deal with fully qualified paths */ | |
1321 | info->symlink_target = prefix_root(root_dir, target); | |
1322 | else | |
1323 | /* This is a relative path, take it relative to the dir the symlink is located in. */ | |
1324 | info->symlink_target = file_in_same_dir(path, target); | |
1325 | if (!info->symlink_target) | |
1326 | return -ENOMEM; | |
1327 | ||
0ec0deaa | 1328 | info->type = UNIT_FILE_TYPE_SYMLINK; |
0ec0deaa LP |
1329 | } |
1330 | ||
1331 | return 0; | |
1332 | } | |
1333 | ||
83096483 LP |
1334 | static int unit_file_search( |
1335 | InstallContext *c, | |
cab6235f | 1336 | UnitFileInstallInfo *info, |
a8ffe6fb | 1337 | const LookupPaths *paths, |
0ec0deaa | 1338 | SearchFlags flags) { |
83096483 | 1339 | |
64f9280e | 1340 | _cleanup_free_ char *template = NULL; |
83096483 LP |
1341 | char **p; |
1342 | int r; | |
1343 | ||
83096483 LP |
1344 | assert(info); |
1345 | assert(paths); | |
1346 | ||
0ec0deaa LP |
1347 | /* Was this unit already loaded? */ |
1348 | if (info->type != _UNIT_FILE_TYPE_INVALID) | |
1349 | return 0; | |
1350 | ||
278fa575 | 1351 | if (info->path) |
e4bb56c7 | 1352 | return unit_file_load_or_readlink(c, info, info->path, paths->root_dir, flags); |
83096483 LP |
1353 | |
1354 | assert(info->name); | |
1355 | ||
a3c4eb07 | 1356 | STRV_FOREACH(p, paths->search_path) { |
e50bd775 | 1357 | _cleanup_free_ char *path = NULL; |
83096483 | 1358 | |
605405c6 | 1359 | path = strjoin(*p, "/", info->name); |
83096483 LP |
1360 | if (!path) |
1361 | return -ENOMEM; | |
1362 | ||
e4bb56c7 | 1363 | r = unit_file_load_or_readlink(c, info, path, paths->root_dir, flags); |
0155928c | 1364 | if (r >= 0) { |
83096483 | 1365 | info->path = path; |
62b00233 | 1366 | path = NULL; |
e50bd775 | 1367 | return r; |
a1feacf7 | 1368 | } else if (!IN_SET(r, -ENOENT, -ENOTDIR, -EACCES)) |
0155928c | 1369 | return r; |
e50bd775 | 1370 | } |
62b00233 | 1371 | |
7410616c | 1372 | if (unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { |
e50bd775 LP |
1373 | /* Unit file doesn't exist, however instance |
1374 | * enablement was requested. We will check if it is | |
1375 | * possible to load template unit file. */ | |
29283ea4 | 1376 | |
7410616c LP |
1377 | r = unit_name_template(info->name, &template); |
1378 | if (r < 0) | |
1379 | return r; | |
e50bd775 | 1380 | |
a3c4eb07 | 1381 | STRV_FOREACH(p, paths->search_path) { |
e50bd775 LP |
1382 | _cleanup_free_ char *path = NULL; |
1383 | ||
605405c6 | 1384 | path = strjoin(*p, "/", template); |
62b00233 ZJS |
1385 | if (!path) |
1386 | return -ENOMEM; | |
29283ea4 | 1387 | |
e4bb56c7 | 1388 | r = unit_file_load_or_readlink(c, info, path, paths->root_dir, flags); |
0155928c | 1389 | if (r >= 0) { |
62b00233 ZJS |
1390 | info->path = path; |
1391 | path = NULL; | |
e50bd775 | 1392 | return r; |
a1feacf7 | 1393 | } else if (!IN_SET(r, -ENOENT, -ENOTDIR, -EACCES)) |
0155928c | 1394 | return r; |
29283ea4 | 1395 | } |
83096483 LP |
1396 | } |
1397 | ||
64f9280e | 1398 | log_debug("Cannot find unit %s%s%s.", info->name, template ? " or " : "", strempty(template)); |
83096483 LP |
1399 | return -ENOENT; |
1400 | } | |
1401 | ||
0ec0deaa LP |
1402 | static int install_info_follow( |
1403 | InstallContext *c, | |
1404 | UnitFileInstallInfo *i, | |
83096483 | 1405 | const char *root_dir, |
9f6cbcf5 LP |
1406 | SearchFlags flags, |
1407 | bool ignore_different_name) { | |
0ec0deaa LP |
1408 | |
1409 | assert(c); | |
1410 | assert(i); | |
1411 | ||
1412 | if (i->type != UNIT_FILE_TYPE_SYMLINK) | |
1413 | return -EINVAL; | |
1414 | if (!i->symlink_target) | |
1415 | return -EINVAL; | |
1416 | ||
1417 | /* If the basename doesn't match, the caller should add a | |
1418 | * complete new entry for this. */ | |
1419 | ||
9f6cbcf5 | 1420 | if (!ignore_different_name && !streq(basename(i->symlink_target), i->name)) |
0ec0deaa LP |
1421 | return -EXDEV; |
1422 | ||
3b319885 | 1423 | free_and_replace(i->path, i->symlink_target); |
0ec0deaa LP |
1424 | i->type = _UNIT_FILE_TYPE_INVALID; |
1425 | ||
1426 | return unit_file_load_or_readlink(c, i, i->path, root_dir, flags); | |
1427 | } | |
1428 | ||
64f9280e | 1429 | /** |
ff56349d ZJS |
1430 | * Search for the unit file. If the unit name is a symlink, follow the symlink to the |
1431 | * target, maybe more than once. Propagate the instance name if present. | |
64f9280e | 1432 | */ |
0ec0deaa LP |
1433 | static int install_info_traverse( |
1434 | UnitFileScope scope, | |
1435 | InstallContext *c, | |
0ec0deaa LP |
1436 | const LookupPaths *paths, |
1437 | UnitFileInstallInfo *start, | |
1438 | SearchFlags flags, | |
1439 | UnitFileInstallInfo **ret) { | |
83096483 | 1440 | |
cab6235f | 1441 | UnitFileInstallInfo *i; |
0ec0deaa | 1442 | unsigned k = 0; |
83096483 LP |
1443 | int r; |
1444 | ||
1445 | assert(paths); | |
0ec0deaa LP |
1446 | assert(start); |
1447 | assert(c); | |
83096483 | 1448 | |
e4bb56c7 | 1449 | r = unit_file_search(c, start, paths, flags); |
83096483 LP |
1450 | if (r < 0) |
1451 | return r; | |
1452 | ||
0ec0deaa LP |
1453 | i = start; |
1454 | while (i->type == UNIT_FILE_TYPE_SYMLINK) { | |
1455 | /* Follow the symlink */ | |
83096483 | 1456 | |
0ec0deaa LP |
1457 | if (++k > UNIT_FILE_FOLLOW_SYMLINK_MAX) |
1458 | return -ELOOP; | |
83096483 | 1459 | |
e1c5c2b0 | 1460 | if (!(flags & SEARCH_FOLLOW_CONFIG_SYMLINKS)) { |
dfead90d | 1461 | r = path_is_config(paths, i->path, true); |
e1c5c2b0 LP |
1462 | if (r < 0) |
1463 | return r; | |
1464 | if (r > 0) | |
1465 | return -ELOOP; | |
1466 | } | |
83096483 | 1467 | |
9f6cbcf5 | 1468 | r = install_info_follow(c, i, paths->root_dir, flags, false); |
0155928c | 1469 | if (r == -EXDEV) { |
0ec0deaa LP |
1470 | _cleanup_free_ char *buffer = NULL; |
1471 | const char *bn; | |
83096483 | 1472 | |
0ec0deaa LP |
1473 | /* Target has a different name, create a new |
1474 | * install info object for that, and continue | |
1475 | * with that. */ | |
83096483 | 1476 | |
0ec0deaa | 1477 | bn = basename(i->symlink_target); |
83096483 | 1478 | |
0ec0deaa LP |
1479 | if (unit_name_is_valid(i->name, UNIT_NAME_INSTANCE) && |
1480 | unit_name_is_valid(bn, UNIT_NAME_TEMPLATE)) { | |
83096483 | 1481 | |
0ec0deaa LP |
1482 | _cleanup_free_ char *instance = NULL; |
1483 | ||
1484 | r = unit_name_to_instance(i->name, &instance); | |
1485 | if (r < 0) | |
1486 | return r; | |
1487 | ||
1488 | r = unit_name_replace_instance(bn, instance, &buffer); | |
1489 | if (r < 0) | |
1490 | return r; | |
1491 | ||
9f6cbcf5 LP |
1492 | if (streq(buffer, i->name)) { |
1493 | ||
1494 | /* We filled in the instance, and the target stayed the same? If so, then let's | |
1495 | * honour the link as it is. */ | |
1496 | ||
1497 | r = install_info_follow(c, i, paths->root_dir, flags, true); | |
1498 | if (r < 0) | |
1499 | return r; | |
1500 | ||
1501 | continue; | |
1502 | } | |
1503 | ||
0ec0deaa LP |
1504 | bn = buffer; |
1505 | } | |
1506 | ||
19539807 | 1507 | r = install_info_add(c, bn, NULL, false, &i); |
0ec0deaa LP |
1508 | if (r < 0) |
1509 | return r; | |
1510 | ||
0155928c | 1511 | /* Try again, with the new target we found. */ |
e4bb56c7 | 1512 | r = unit_file_search(c, i, paths, flags); |
893275df ZJS |
1513 | if (r == -ENOENT) |
1514 | /* Translate error code to highlight this specific case */ | |
1515 | return -ENOLINK; | |
0ec0deaa LP |
1516 | } |
1517 | ||
0155928c ZJS |
1518 | if (r < 0) |
1519 | return r; | |
83096483 LP |
1520 | } |
1521 | ||
0ec0deaa LP |
1522 | if (ret) |
1523 | *ret = i; | |
83096483 | 1524 | |
0ec0deaa LP |
1525 | return 0; |
1526 | } | |
83096483 | 1527 | |
ff56349d ZJS |
1528 | /** |
1529 | * Call install_info_add() with name_or_path as the path (if name_or_path starts with "/") | |
1530 | * or the name (otherwise). root_dir is prepended to the path. | |
1531 | */ | |
401017e0 LP |
1532 | static int install_info_add_auto( |
1533 | InstallContext *c, | |
1534 | const LookupPaths *paths, | |
1535 | const char *name_or_path, | |
1536 | UnitFileInstallInfo **ret) { | |
1537 | ||
1538 | assert(c); | |
1539 | assert(name_or_path); | |
1540 | ||
1541 | if (path_is_absolute(name_or_path)) { | |
1542 | const char *pp; | |
1543 | ||
1544 | pp = prefix_roota(paths->root_dir, name_or_path); | |
1545 | ||
19539807 | 1546 | return install_info_add(c, NULL, pp, false, ret); |
401017e0 | 1547 | } else |
19539807 | 1548 | return install_info_add(c, name_or_path, NULL, false, ret); |
401017e0 LP |
1549 | } |
1550 | ||
0ec0deaa LP |
1551 | static int install_info_discover( |
1552 | UnitFileScope scope, | |
1553 | InstallContext *c, | |
0ec0deaa LP |
1554 | const LookupPaths *paths, |
1555 | const char *name, | |
1556 | SearchFlags flags, | |
59108fbe ZJS |
1557 | UnitFileInstallInfo **ret, |
1558 | UnitFileChange **changes, | |
1559 | unsigned *n_changes) { | |
83096483 | 1560 | |
0ec0deaa LP |
1561 | UnitFileInstallInfo *i; |
1562 | int r; | |
83096483 | 1563 | |
0ec0deaa LP |
1564 | assert(c); |
1565 | assert(paths); | |
1566 | assert(name); | |
1567 | ||
401017e0 | 1568 | r = install_info_add_auto(c, paths, name, &i); |
59108fbe ZJS |
1569 | if (r >= 0) |
1570 | r = install_info_traverse(scope, c, paths, i, flags, ret); | |
83096483 | 1571 | |
59108fbe ZJS |
1572 | if (r < 0) |
1573 | unit_file_changes_add(changes, n_changes, r, name, NULL); | |
1574 | return r; | |
83096483 LP |
1575 | } |
1576 | ||
1577 | static int install_info_symlink_alias( | |
cab6235f | 1578 | UnitFileInstallInfo *i, |
401017e0 | 1579 | const LookupPaths *paths, |
83096483 LP |
1580 | const char *config_path, |
1581 | bool force, | |
1582 | UnitFileChange **changes, | |
1583 | unsigned *n_changes) { | |
1584 | ||
1585 | char **s; | |
1586 | int r = 0, q; | |
1587 | ||
1588 | assert(i); | |
401017e0 | 1589 | assert(paths); |
83096483 LP |
1590 | assert(config_path); |
1591 | ||
1592 | STRV_FOREACH(s, i->aliases) { | |
7fd1b19b | 1593 | _cleanup_free_ char *alias_path = NULL, *dst = NULL; |
83096483 | 1594 | |
19f6d710 LP |
1595 | q = install_full_printf(i, *s, &dst); |
1596 | if (q < 0) | |
1597 | return q; | |
83096483 | 1598 | |
7584d236 | 1599 | alias_path = path_make_absolute(dst, config_path); |
83096483 LP |
1600 | if (!alias_path) |
1601 | return -ENOMEM; | |
1602 | ||
60bec8e4 | 1603 | q = create_symlink(paths, i->path, alias_path, force, changes, n_changes); |
83096483 LP |
1604 | if (r == 0) |
1605 | r = q; | |
1606 | } | |
1607 | ||
1608 | return r; | |
1609 | } | |
1610 | ||
1611 | static int install_info_symlink_wants( | |
cab6235f | 1612 | UnitFileInstallInfo *i, |
401017e0 | 1613 | const LookupPaths *paths, |
83096483 | 1614 | const char *config_path, |
d54c4993 LP |
1615 | char **list, |
1616 | const char *suffix, | |
83096483 LP |
1617 | UnitFileChange **changes, |
1618 | unsigned *n_changes) { | |
1619 | ||
d54c4993 LP |
1620 | _cleanup_free_ char *buf = NULL; |
1621 | const char *n; | |
83096483 LP |
1622 | char **s; |
1623 | int r = 0, q; | |
1624 | ||
1625 | assert(i); | |
401017e0 | 1626 | assert(paths); |
83096483 LP |
1627 | assert(config_path); |
1628 | ||
047d91f9 ZJS |
1629 | if (strv_isempty(list)) |
1630 | return 0; | |
1631 | ||
be704916 | 1632 | if (unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE) && i->default_instance) { |
047d91f9 ZJS |
1633 | UnitFileInstallInfo instance = { |
1634 | .type = _UNIT_FILE_TYPE_INVALID, | |
1635 | }; | |
1636 | _cleanup_free_ char *path = NULL; | |
0a327d75 | 1637 | |
7410616c LP |
1638 | r = unit_name_replace_instance(i->name, i->default_instance, &buf); |
1639 | if (r < 0) | |
1640 | return r; | |
83096483 | 1641 | |
047d91f9 ZJS |
1642 | instance.name = buf; |
1643 | r = unit_file_search(NULL, &instance, paths, SEARCH_FOLLOW_CONFIG_SYMLINKS); | |
1644 | if (r < 0) | |
1645 | return r; | |
1646 | ||
1647 | path = instance.path; | |
1648 | instance.path = NULL; | |
1649 | ||
1650 | if (instance.type == UNIT_FILE_TYPE_MASKED) { | |
1651 | unit_file_changes_add(changes, n_changes, -ERFKILL, path, NULL); | |
1652 | return -ERFKILL; | |
1653 | } | |
1654 | ||
d54c4993 LP |
1655 | n = buf; |
1656 | } else | |
1657 | n = i->name; | |
78d54bd4 | 1658 | |
d54c4993 | 1659 | STRV_FOREACH(s, list) { |
7fd1b19b | 1660 | _cleanup_free_ char *path = NULL, *dst = NULL; |
78d54bd4 | 1661 | |
19f6d710 LP |
1662 | q = install_full_printf(i, *s, &dst); |
1663 | if (q < 0) | |
1664 | return q; | |
7584d236 | 1665 | |
7410616c | 1666 | if (!unit_name_is_valid(dst, UNIT_NAME_ANY)) { |
78d54bd4 LP |
1667 | r = -EINVAL; |
1668 | continue; | |
1669 | } | |
1670 | ||
605405c6 | 1671 | path = strjoin(config_path, "/", dst, suffix, n); |
d54c4993 | 1672 | if (!path) |
78d54bd4 LP |
1673 | return -ENOMEM; |
1674 | ||
60bec8e4 | 1675 | q = create_symlink(paths, i->path, path, true, changes, n_changes); |
78d54bd4 LP |
1676 | if (r == 0) |
1677 | r = q; | |
1678 | } | |
1679 | ||
1680 | return r; | |
1681 | } | |
1682 | ||
83096483 | 1683 | static int install_info_symlink_link( |
cab6235f | 1684 | UnitFileInstallInfo *i, |
a8ffe6fb | 1685 | const LookupPaths *paths, |
83096483 LP |
1686 | const char *config_path, |
1687 | bool force, | |
1688 | UnitFileChange **changes, | |
1689 | unsigned *n_changes) { | |
1690 | ||
7fd1b19b | 1691 | _cleanup_free_ char *path = NULL; |
1dacfd2a | 1692 | int r; |
83096483 LP |
1693 | |
1694 | assert(i); | |
1695 | assert(paths); | |
1696 | assert(config_path); | |
1697 | assert(i->path); | |
1698 | ||
32c0ed7b | 1699 | r = in_search_path(paths, i->path); |
fe4aede9 | 1700 | if (r < 0) |
83096483 | 1701 | return r; |
fe4aede9 ZJS |
1702 | if (r > 0) |
1703 | return 0; | |
83096483 | 1704 | |
605405c6 | 1705 | path = strjoin(config_path, "/", i->name); |
1dacfd2a | 1706 | if (!path) |
83096483 LP |
1707 | return -ENOMEM; |
1708 | ||
60bec8e4 | 1709 | return create_symlink(paths, i->path, path, force, changes, n_changes); |
83096483 LP |
1710 | } |
1711 | ||
1712 | static int install_info_apply( | |
cab6235f | 1713 | UnitFileInstallInfo *i, |
a8ffe6fb | 1714 | const LookupPaths *paths, |
83096483 LP |
1715 | const char *config_path, |
1716 | bool force, | |
1717 | UnitFileChange **changes, | |
1718 | unsigned *n_changes) { | |
1719 | ||
1720 | int r, q; | |
1721 | ||
1722 | assert(i); | |
1723 | assert(paths); | |
1724 | assert(config_path); | |
1725 | ||
0ec0deaa LP |
1726 | if (i->type != UNIT_FILE_TYPE_REGULAR) |
1727 | return 0; | |
1728 | ||
401017e0 | 1729 | r = install_info_symlink_alias(i, paths, config_path, force, changes, n_changes); |
83096483 | 1730 | |
29380daf | 1731 | q = install_info_symlink_wants(i, paths, config_path, i->wanted_by, ".wants/", changes, n_changes); |
83096483 LP |
1732 | if (r == 0) |
1733 | r = q; | |
1734 | ||
29380daf | 1735 | q = install_info_symlink_wants(i, paths, config_path, i->required_by, ".requires/", changes, n_changes); |
78d54bd4 LP |
1736 | if (r == 0) |
1737 | r = q; | |
1738 | ||
e4bb56c7 | 1739 | q = install_info_symlink_link(i, paths, config_path, force, changes, n_changes); |
fe4aede9 ZJS |
1740 | /* Do not count links to the unit file towards the "carries_install_info" count */ |
1741 | if (r == 0 && q < 0) | |
83096483 LP |
1742 | r = q; |
1743 | ||
1744 | return r; | |
1745 | } | |
1746 | ||
1747 | static int install_context_apply( | |
0ec0deaa | 1748 | UnitFileScope scope, |
83096483 | 1749 | InstallContext *c, |
a8ffe6fb | 1750 | const LookupPaths *paths, |
83096483 | 1751 | const char *config_path, |
83096483 | 1752 | bool force, |
0ec0deaa | 1753 | SearchFlags flags, |
83096483 LP |
1754 | UnitFileChange **changes, |
1755 | unsigned *n_changes) { | |
1756 | ||
cab6235f | 1757 | UnitFileInstallInfo *i; |
0ec0deaa | 1758 | int r; |
83096483 LP |
1759 | |
1760 | assert(c); | |
1761 | assert(paths); | |
1762 | assert(config_path); | |
1763 | ||
0ec0deaa | 1764 | if (ordered_hashmap_isempty(c->will_process)) |
d25e100b | 1765 | return 0; |
83096483 | 1766 | |
0ec0deaa | 1767 | r = ordered_hashmap_ensure_allocated(&c->have_processed, &string_hash_ops); |
d25e100b LP |
1768 | if (r < 0) |
1769 | return r; | |
83096483 | 1770 | |
2d5c93c7 | 1771 | r = 0; |
0ec0deaa LP |
1772 | while ((i = ordered_hashmap_first(c->will_process))) { |
1773 | int q; | |
83096483 | 1774 | |
0ec0deaa LP |
1775 | q = ordered_hashmap_move_one(c->have_processed, c->will_process, i->name); |
1776 | if (q < 0) | |
1777 | return q; | |
83096483 | 1778 | |
e4bb56c7 | 1779 | r = install_info_traverse(scope, c, paths, i, flags, NULL); |
db093eed ZJS |
1780 | if (r < 0) { |
1781 | unit_file_changes_add(changes, n_changes, r, i->name, NULL); | |
83096483 | 1782 | return r; |
db093eed | 1783 | } |
0ec0deaa | 1784 | |
f1651715 | 1785 | /* We can attempt to process a masked unit when a different unit |
047d91f9 | 1786 | * that we were processing specifies it in Also=. */ |
f1651715 ZJS |
1787 | if (i->type == UNIT_FILE_TYPE_MASKED) { |
1788 | unit_file_changes_add(changes, n_changes, UNIT_FILE_IS_MASKED, i->path, NULL); | |
1789 | if (r >= 0) | |
047d91f9 ZJS |
1790 | /* Assume that something *could* have been enabled here, |
1791 | * avoid "empty [Install] section" warning. */ | |
f1651715 ZJS |
1792 | r += 1; |
1793 | continue; | |
1794 | } | |
1795 | ||
0ec0deaa LP |
1796 | if (i->type != UNIT_FILE_TYPE_REGULAR) |
1797 | continue; | |
83096483 | 1798 | |
e4bb56c7 | 1799 | q = install_info_apply(i, paths, config_path, force, changes, n_changes); |
0ec0deaa LP |
1800 | if (r >= 0) { |
1801 | if (q < 0) | |
1802 | r = q; | |
1803 | else | |
596fc263 | 1804 | r += q; |
0ec0deaa | 1805 | } |
83096483 LP |
1806 | } |
1807 | ||
1808 | return r; | |
1809 | } | |
1810 | ||
1811 | static int install_context_mark_for_removal( | |
0ec0deaa | 1812 | UnitFileScope scope, |
83096483 | 1813 | InstallContext *c, |
a8ffe6fb | 1814 | const LookupPaths *paths, |
83096483 | 1815 | Set **remove_symlinks_to, |
637d6e5b LP |
1816 | const char *config_path, |
1817 | UnitFileChange **changes, | |
1818 | unsigned *n_changes) { | |
83096483 | 1819 | |
cab6235f | 1820 | UnitFileInstallInfo *i; |
0ec0deaa | 1821 | int r; |
83096483 LP |
1822 | |
1823 | assert(c); | |
1824 | assert(paths); | |
1825 | assert(config_path); | |
1826 | ||
1827 | /* Marks all items for removal */ | |
1828 | ||
0ec0deaa | 1829 | if (ordered_hashmap_isempty(c->will_process)) |
d25e100b | 1830 | return 0; |
83096483 | 1831 | |
0ec0deaa | 1832 | r = ordered_hashmap_ensure_allocated(&c->have_processed, &string_hash_ops); |
d25e100b LP |
1833 | if (r < 0) |
1834 | return r; | |
83096483 | 1835 | |
0ec0deaa | 1836 | while ((i = ordered_hashmap_first(c->will_process))) { |
83096483 | 1837 | |
0ec0deaa LP |
1838 | r = ordered_hashmap_move_one(c->have_processed, c->will_process, i->name); |
1839 | if (r < 0) | |
83096483 | 1840 | return r; |
29283ea4 | 1841 | |
e4bb56c7 | 1842 | r = install_info_traverse(scope, c, paths, i, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, NULL); |
19539807 | 1843 | if (r == -ENOLINK) { |
637d6e5b LP |
1844 | log_debug_errno(r, "Name %s leads to a dangling symlink, removing name.", i->name); |
1845 | unit_file_changes_add(changes, n_changes, UNIT_FILE_IS_DANGLING, i->path ?: i->name, NULL); | |
1846 | } else if (r == -ENOENT) { | |
1847 | ||
1848 | if (i->auxiliary) /* some unit specified in Also= or similar is missing */ | |
1849 | log_debug_errno(r, "Auxiliary unit of %s not found, removing name.", i->name); | |
1850 | else { | |
1851 | log_debug_errno(r, "Unit %s not found, removing name.", i->name); | |
1852 | unit_file_changes_add(changes, n_changes, r, i->path ?: i->name, NULL); | |
1853 | } | |
0ec0deaa | 1854 | |
637d6e5b LP |
1855 | } else if (r < 0) { |
1856 | log_debug_errno(r, "Failed to find unit %s, removing name: %m", i->name); | |
1857 | unit_file_changes_add(changes, n_changes, r, i->path ?: i->name, NULL); | |
1858 | } else if (i->type == UNIT_FILE_TYPE_MASKED) { | |
1859 | log_debug("Unit file %s is masked, ignoring.", i->name); | |
1860 | unit_file_changes_add(changes, n_changes, UNIT_FILE_IS_MASKED, i->path ?: i->name, NULL); | |
1861 | continue; | |
1862 | } else if (i->type != UNIT_FILE_TYPE_REGULAR) { | |
1863 | log_debug("Unit %s has type %s, ignoring.", i->name, unit_file_type_to_string(i->type) ?: "invalid"); | |
0ec0deaa | 1864 | continue; |
64f9280e | 1865 | } |
0ec0deaa LP |
1866 | |
1867 | r = mark_symlink_for_removal(remove_symlinks_to, i->name); | |
1868 | if (r < 0) | |
1869 | return r; | |
1870 | } | |
1871 | ||
1872 | return 0; | |
1873 | } | |
1874 | ||
1875 | int unit_file_mask( | |
1876 | UnitFileScope scope, | |
b3796dd8 | 1877 | UnitFileFlags flags, |
0ec0deaa LP |
1878 | const char *root_dir, |
1879 | char **files, | |
0ec0deaa LP |
1880 | UnitFileChange **changes, |
1881 | unsigned *n_changes) { | |
1882 | ||
e1c5c2b0 LP |
1883 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
1884 | const char *config_path; | |
0ec0deaa LP |
1885 | char **i; |
1886 | int r; | |
1887 | ||
1888 | assert(scope >= 0); | |
1889 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
1890 | ||
4943d143 | 1891 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
0ec0deaa LP |
1892 | if (r < 0) |
1893 | return r; | |
1894 | ||
b3796dd8 | 1895 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
d0fd66a3 LP |
1896 | if (!config_path) |
1897 | return -ENXIO; | |
e1c5c2b0 | 1898 | |
0ec0deaa LP |
1899 | STRV_FOREACH(i, files) { |
1900 | _cleanup_free_ char *path = NULL; | |
1901 | int q; | |
1902 | ||
1903 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) { | |
1904 | if (r == 0) | |
1905 | r = -EINVAL; | |
1906 | continue; | |
1907 | } | |
1908 | ||
e1c5c2b0 | 1909 | path = path_make_absolute(*i, config_path); |
0ec0deaa LP |
1910 | if (!path) |
1911 | return -ENOMEM; | |
29283ea4 | 1912 | |
b3796dd8 | 1913 | q = create_symlink(&paths, "/dev/null", path, !!(flags & UNIT_FILE_FORCE), changes, n_changes); |
0ec0deaa | 1914 | if (q < 0 && r >= 0) |
83096483 LP |
1915 | r = q; |
1916 | } | |
1917 | ||
1918 | return r; | |
1919 | } | |
1920 | ||
0ec0deaa LP |
1921 | int unit_file_unmask( |
1922 | UnitFileScope scope, | |
b3796dd8 | 1923 | UnitFileFlags flags, |
0ec0deaa LP |
1924 | const char *root_dir, |
1925 | char **files, | |
1926 | UnitFileChange **changes, | |
1927 | unsigned *n_changes) { | |
1928 | ||
e1c5c2b0 | 1929 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
0ec0deaa | 1930 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; |
dc7dd61d | 1931 | _cleanup_strv_free_ char **todo = NULL; |
0ec0deaa | 1932 | size_t n_todo = 0, n_allocated = 0; |
e1c5c2b0 | 1933 | const char *config_path; |
0ec0deaa | 1934 | char **i; |
3b3557c4 | 1935 | bool dry_run; |
0ec0deaa LP |
1936 | int r, q; |
1937 | ||
1938 | assert(scope >= 0); | |
1939 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
1940 | ||
4943d143 | 1941 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
0ec0deaa LP |
1942 | if (r < 0) |
1943 | return r; | |
1944 | ||
b3796dd8 | 1945 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
d0fd66a3 LP |
1946 | if (!config_path) |
1947 | return -ENXIO; | |
1948 | ||
3b3557c4 | 1949 | dry_run = !!(flags & UNIT_FILE_DRY_RUN); |
e1c5c2b0 | 1950 | |
0ec0deaa LP |
1951 | STRV_FOREACH(i, files) { |
1952 | _cleanup_free_ char *path = NULL; | |
1953 | ||
1954 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) | |
1955 | return -EINVAL; | |
1956 | ||
1957 | path = path_make_absolute(*i, config_path); | |
1958 | if (!path) | |
1959 | return -ENOMEM; | |
1960 | ||
1961 | r = null_or_empty_path(path); | |
1962 | if (r == -ENOENT) | |
1963 | continue; | |
1964 | if (r < 0) | |
1965 | return r; | |
1966 | if (r == 0) | |
1967 | continue; | |
1968 | ||
1969 | if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2)) | |
1970 | return -ENOMEM; | |
1971 | ||
d054eae6 EV |
1972 | todo[n_todo] = strdup(*i); |
1973 | if (!todo[n_todo]) | |
1974 | return -ENOMEM; | |
1975 | ||
1976 | n_todo++; | |
0ec0deaa LP |
1977 | } |
1978 | ||
1979 | strv_uniq(todo); | |
1980 | ||
1981 | r = 0; | |
1982 | STRV_FOREACH(i, todo) { | |
1983 | _cleanup_free_ char *path = NULL; | |
401017e0 | 1984 | const char *rp; |
0ec0deaa LP |
1985 | |
1986 | path = path_make_absolute(*i, config_path); | |
1987 | if (!path) | |
1988 | return -ENOMEM; | |
1989 | ||
3b3557c4 | 1990 | if (!dry_run && unlink(path) < 0) { |
af3d8113 ZJS |
1991 | if (errno != ENOENT) { |
1992 | if (r >= 0) | |
1993 | r = -errno; | |
1994 | unit_file_changes_add(changes, n_changes, -errno, path, NULL); | |
1995 | } | |
0ec0deaa | 1996 | |
401017e0 | 1997 | continue; |
0ec0deaa | 1998 | } |
401017e0 LP |
1999 | |
2000 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, path, NULL); | |
2001 | ||
2002 | rp = skip_root(&paths, path); | |
2003 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: path); | |
2004 | if (q < 0) | |
2005 | return q; | |
0ec0deaa LP |
2006 | } |
2007 | ||
3b3557c4 | 2008 | q = remove_marked_symlinks(remove_symlinks_to, config_path, &paths, dry_run, changes, n_changes); |
0ec0deaa LP |
2009 | if (r >= 0) |
2010 | r = q; | |
2011 | ||
2012 | return r; | |
2013 | } | |
2014 | ||
2015 | int unit_file_link( | |
e94937df | 2016 | UnitFileScope scope, |
b3796dd8 | 2017 | UnitFileFlags flags, |
e94937df LN |
2018 | const char *root_dir, |
2019 | char **files, | |
e94937df LN |
2020 | UnitFileChange **changes, |
2021 | unsigned *n_changes) { | |
2022 | ||
2023 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; | |
8af35ba6 | 2024 | _cleanup_strv_free_ char **todo = NULL; |
0ec0deaa | 2025 | size_t n_todo = 0, n_allocated = 0; |
e1c5c2b0 | 2026 | const char *config_path; |
e94937df | 2027 | char **i; |
0ec0deaa | 2028 | int r, q; |
e94937df LN |
2029 | |
2030 | assert(scope >= 0); | |
2031 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2032 | ||
4943d143 | 2033 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
e94937df LN |
2034 | if (r < 0) |
2035 | return r; | |
2036 | ||
b3796dd8 | 2037 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
d0fd66a3 LP |
2038 | if (!config_path) |
2039 | return -ENXIO; | |
e94937df LN |
2040 | |
2041 | STRV_FOREACH(i, files) { | |
0ec0deaa LP |
2042 | _cleanup_free_ char *full = NULL; |
2043 | struct stat st; | |
2044 | char *fn; | |
e94937df | 2045 | |
0ec0deaa LP |
2046 | if (!path_is_absolute(*i)) |
2047 | return -EINVAL; | |
e94937df | 2048 | |
0ec0deaa LP |
2049 | fn = basename(*i); |
2050 | if (!unit_name_is_valid(fn, UNIT_NAME_ANY)) | |
2051 | return -EINVAL; | |
2052 | ||
e4bb56c7 | 2053 | full = prefix_root(paths.root_dir, *i); |
0ec0deaa LP |
2054 | if (!full) |
2055 | return -ENOMEM; | |
2056 | ||
2057 | if (lstat(full, &st) < 0) | |
2058 | return -errno; | |
2059 | if (S_ISLNK(st.st_mode)) | |
2060 | return -ELOOP; | |
2061 | if (S_ISDIR(st.st_mode)) | |
2062 | return -EISDIR; | |
2063 | if (!S_ISREG(st.st_mode)) | |
2064 | return -ENOTTY; | |
2065 | ||
32c0ed7b | 2066 | q = in_search_path(&paths, *i); |
0ec0deaa LP |
2067 | if (q < 0) |
2068 | return q; | |
2069 | if (q > 0) | |
2070 | continue; | |
2071 | ||
2072 | if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2)) | |
2073 | return -ENOMEM; | |
2074 | ||
8af35ba6 EV |
2075 | todo[n_todo] = strdup(*i); |
2076 | if (!todo[n_todo]) | |
2077 | return -ENOMEM; | |
2078 | ||
2079 | n_todo++; | |
e94937df LN |
2080 | } |
2081 | ||
0ec0deaa | 2082 | strv_uniq(todo); |
e94937df | 2083 | |
0ec0deaa LP |
2084 | r = 0; |
2085 | STRV_FOREACH(i, todo) { | |
401017e0 | 2086 | _cleanup_free_ char *new_path = NULL; |
0ec0deaa | 2087 | |
401017e0 LP |
2088 | new_path = path_make_absolute(basename(*i), config_path); |
2089 | if (!new_path) | |
0ec0deaa LP |
2090 | return -ENOMEM; |
2091 | ||
b3796dd8 | 2092 | q = create_symlink(&paths, *i, new_path, !!(flags & UNIT_FILE_FORCE), changes, n_changes); |
0ec0deaa LP |
2093 | if (q < 0 && r >= 0) |
2094 | r = q; | |
2d5c93c7 MS |
2095 | } |
2096 | ||
0ec0deaa LP |
2097 | return r; |
2098 | } | |
2099 | ||
344ca755 LP |
2100 | static int path_shall_revert(const LookupPaths *paths, const char *path) { |
2101 | int r; | |
2102 | ||
2103 | assert(paths); | |
2104 | assert(path); | |
2105 | ||
2106 | /* Checks whether the path is one where the drop-in directories shall be removed. */ | |
2107 | ||
dfead90d | 2108 | r = path_is_config(paths, path, true); |
344ca755 LP |
2109 | if (r != 0) |
2110 | return r; | |
2111 | ||
2112 | r = path_is_control(paths, path); | |
2113 | if (r != 0) | |
2114 | return r; | |
2115 | ||
2116 | return path_is_transient(paths, path); | |
2117 | } | |
2118 | ||
2119 | int unit_file_revert( | |
2120 | UnitFileScope scope, | |
2121 | const char *root_dir, | |
2122 | char **files, | |
2123 | UnitFileChange **changes, | |
2124 | unsigned *n_changes) { | |
2125 | ||
2126 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
344ca755 LP |
2127 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
2128 | _cleanup_strv_free_ char **todo = NULL; | |
2129 | size_t n_todo = 0, n_allocated = 0; | |
2130 | char **i; | |
2131 | int r, q; | |
2132 | ||
2133 | /* Puts a unit file back into vendor state. This means: | |
2134 | * | |
2135 | * a) we remove all drop-in snippets added by the user ("config"), add to transient units ("transient"), and | |
2136 | * added via "systemctl set-property" ("control"), but not if the drop-in is generated ("generated"). | |
2137 | * | |
2138 | * c) if there's a vendor unit file (i.e. one in /usr) we remove any configured overriding unit files (i.e. in | |
2139 | * "config", but not in "transient" or "control" or even "generated"). | |
2140 | * | |
4f25723c | 2141 | * We remove all that in both the runtime and the persistent directories, if that applies. |
344ca755 LP |
2142 | */ |
2143 | ||
2144 | r = lookup_paths_init(&paths, scope, 0, root_dir); | |
2145 | if (r < 0) | |
2146 | return r; | |
2147 | ||
2148 | STRV_FOREACH(i, files) { | |
2149 | bool has_vendor = false; | |
2150 | char **p; | |
2151 | ||
2152 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) | |
2153 | return -EINVAL; | |
2154 | ||
2155 | STRV_FOREACH(p, paths.search_path) { | |
2156 | _cleanup_free_ char *path = NULL, *dropin = NULL; | |
2157 | struct stat st; | |
2158 | ||
2159 | path = path_make_absolute(*i, *p); | |
2160 | if (!path) | |
2161 | return -ENOMEM; | |
2162 | ||
2163 | r = lstat(path, &st); | |
2164 | if (r < 0) { | |
2165 | if (errno != ENOENT) | |
2166 | return -errno; | |
2167 | } else if (S_ISREG(st.st_mode)) { | |
2168 | /* Check if there's a vendor version */ | |
2169 | r = path_is_vendor(&paths, path); | |
2170 | if (r < 0) | |
2171 | return r; | |
2172 | if (r > 0) | |
2173 | has_vendor = true; | |
2174 | } | |
2175 | ||
2176 | dropin = strappend(path, ".d"); | |
2177 | if (!dropin) | |
2178 | return -ENOMEM; | |
2179 | ||
2180 | r = lstat(dropin, &st); | |
2181 | if (r < 0) { | |
2182 | if (errno != ENOENT) | |
2183 | return -errno; | |
2184 | } else if (S_ISDIR(st.st_mode)) { | |
2185 | /* Remove the drop-ins */ | |
2186 | r = path_shall_revert(&paths, dropin); | |
2187 | if (r < 0) | |
2188 | return r; | |
2189 | if (r > 0) { | |
2190 | if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2)) | |
2191 | return -ENOMEM; | |
2192 | ||
2193 | todo[n_todo++] = dropin; | |
2194 | dropin = NULL; | |
2195 | } | |
2196 | } | |
2197 | } | |
2198 | ||
2199 | if (!has_vendor) | |
2200 | continue; | |
2201 | ||
2202 | /* OK, there's a vendor version, hence drop all configuration versions */ | |
2203 | STRV_FOREACH(p, paths.search_path) { | |
2204 | _cleanup_free_ char *path = NULL; | |
2205 | struct stat st; | |
2206 | ||
2207 | path = path_make_absolute(*i, *p); | |
2208 | if (!path) | |
2209 | return -ENOMEM; | |
2210 | ||
2211 | r = lstat(path, &st); | |
2212 | if (r < 0) { | |
2213 | if (errno != ENOENT) | |
2214 | return -errno; | |
2215 | } else if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) { | |
dfead90d | 2216 | r = path_is_config(&paths, path, true); |
344ca755 LP |
2217 | if (r < 0) |
2218 | return r; | |
2219 | if (r > 0) { | |
2220 | if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2)) | |
2221 | return -ENOMEM; | |
2222 | ||
2223 | todo[n_todo++] = path; | |
2224 | path = NULL; | |
2225 | } | |
2226 | } | |
2227 | } | |
2228 | } | |
2229 | ||
2230 | strv_uniq(todo); | |
2231 | ||
2232 | r = 0; | |
2233 | STRV_FOREACH(i, todo) { | |
2234 | _cleanup_strv_free_ char **fs = NULL; | |
2235 | const char *rp; | |
2236 | char **j; | |
2237 | ||
2238 | (void) get_files_in_directory(*i, &fs); | |
2239 | ||
2240 | q = rm_rf(*i, REMOVE_ROOT|REMOVE_PHYSICAL); | |
2241 | if (q < 0 && q != -ENOENT && r >= 0) { | |
2242 | r = q; | |
2243 | continue; | |
2244 | } | |
2245 | ||
2246 | STRV_FOREACH(j, fs) { | |
2247 | _cleanup_free_ char *t = NULL; | |
2248 | ||
605405c6 | 2249 | t = strjoin(*i, "/", *j); |
344ca755 LP |
2250 | if (!t) |
2251 | return -ENOMEM; | |
2252 | ||
2253 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, t, NULL); | |
2254 | } | |
2255 | ||
2256 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, *i, NULL); | |
2257 | ||
2258 | rp = skip_root(&paths, *i); | |
2259 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: *i); | |
2260 | if (q < 0) | |
2261 | return q; | |
2262 | } | |
2263 | ||
3b3557c4 | 2264 | q = remove_marked_symlinks(remove_symlinks_to, paths.runtime_config, &paths, false, changes, n_changes); |
344ca755 LP |
2265 | if (r >= 0) |
2266 | r = q; | |
2267 | ||
3b3557c4 | 2268 | q = remove_marked_symlinks(remove_symlinks_to, paths.persistent_config, &paths, false, changes, n_changes); |
344ca755 LP |
2269 | if (r >= 0) |
2270 | r = q; | |
2271 | ||
2272 | return r; | |
2273 | } | |
2274 | ||
0ec0deaa LP |
2275 | int unit_file_add_dependency( |
2276 | UnitFileScope scope, | |
b3796dd8 | 2277 | UnitFileFlags flags, |
0ec0deaa LP |
2278 | const char *root_dir, |
2279 | char **files, | |
2280 | const char *target, | |
2281 | UnitDependency dep, | |
0ec0deaa LP |
2282 | UnitFileChange **changes, |
2283 | unsigned *n_changes) { | |
2284 | ||
2285 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; | |
2286 | _cleanup_(install_context_done) InstallContext c = {}; | |
0ec0deaa | 2287 | UnitFileInstallInfo *i, *target_info; |
e1c5c2b0 | 2288 | const char *config_path; |
0ec0deaa LP |
2289 | char **f; |
2290 | int r; | |
2291 | ||
2292 | assert(scope >= 0); | |
2293 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2294 | assert(target); | |
2295 | ||
2296 | if (!IN_SET(dep, UNIT_WANTS, UNIT_REQUIRES)) | |
2297 | return -EINVAL; | |
2298 | ||
2299 | if (!unit_name_is_valid(target, UNIT_NAME_ANY)) | |
2300 | return -EINVAL; | |
2301 | ||
4943d143 | 2302 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
0ec0deaa LP |
2303 | if (r < 0) |
2304 | return r; | |
2305 | ||
b3796dd8 | 2306 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
d0fd66a3 LP |
2307 | if (!config_path) |
2308 | return -ENXIO; | |
0ec0deaa | 2309 | |
59108fbe ZJS |
2310 | r = install_info_discover(scope, &c, &paths, target, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2311 | &target_info, changes, n_changes); | |
0ec0deaa LP |
2312 | if (r < 0) |
2313 | return r; | |
af3d8113 | 2314 | r = install_info_may_process(target_info, &paths, changes, n_changes); |
76adb5b8 LP |
2315 | if (r < 0) |
2316 | return r; | |
0ec0deaa LP |
2317 | |
2318 | assert(target_info->type == UNIT_FILE_TYPE_REGULAR); | |
e94937df | 2319 | |
0ec0deaa LP |
2320 | STRV_FOREACH(f, files) { |
2321 | char ***l; | |
2322 | ||
59108fbe ZJS |
2323 | r = install_info_discover(scope, &c, &paths, *f, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2324 | &i, changes, n_changes); | |
e94937df LN |
2325 | if (r < 0) |
2326 | return r; | |
af3d8113 | 2327 | r = install_info_may_process(i, &paths, changes, n_changes); |
76adb5b8 LP |
2328 | if (r < 0) |
2329 | return r; | |
0ec0deaa LP |
2330 | |
2331 | assert(i->type == UNIT_FILE_TYPE_REGULAR); | |
2332 | ||
2333 | /* We didn't actually load anything from the unit | |
2334 | * file, but instead just add in our new symlink to | |
2335 | * create. */ | |
e94937df LN |
2336 | |
2337 | if (dep == UNIT_WANTS) | |
0ec0deaa | 2338 | l = &i->wanted_by; |
e94937df | 2339 | else |
0ec0deaa | 2340 | l = &i->required_by; |
e94937df | 2341 | |
0ec0deaa LP |
2342 | strv_free(*l); |
2343 | *l = strv_new(target_info->name, NULL); | |
2344 | if (!*l) | |
2345 | return -ENOMEM; | |
e94937df LN |
2346 | } |
2347 | ||
b3796dd8 | 2348 | return install_context_apply(scope, &c, &paths, config_path, !!(flags & UNIT_FILE_FORCE), SEARCH_FOLLOW_CONFIG_SYMLINKS, changes, n_changes); |
e94937df LN |
2349 | } |
2350 | ||
83096483 LP |
2351 | int unit_file_enable( |
2352 | UnitFileScope scope, | |
b3796dd8 | 2353 | UnitFileFlags flags, |
83096483 | 2354 | const char *root_dir, |
7195aa42 | 2355 | char **files, |
83096483 LP |
2356 | UnitFileChange **changes, |
2357 | unsigned *n_changes) { | |
2358 | ||
7fd1b19b | 2359 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
59ccf93d | 2360 | _cleanup_(install_context_done) InstallContext c = {}; |
e1c5c2b0 | 2361 | const char *config_path; |
0ec0deaa LP |
2362 | UnitFileInstallInfo *i; |
2363 | char **f; | |
83096483 LP |
2364 | int r; |
2365 | ||
2366 | assert(scope >= 0); | |
2367 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2368 | ||
4943d143 | 2369 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
83096483 LP |
2370 | if (r < 0) |
2371 | return r; | |
2372 | ||
b3796dd8 | 2373 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
d0fd66a3 LP |
2374 | if (!config_path) |
2375 | return -ENXIO; | |
83096483 | 2376 | |
0ec0deaa | 2377 | STRV_FOREACH(f, files) { |
59108fbe ZJS |
2378 | r = install_info_discover(scope, &c, &paths, *f, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2379 | &i, changes, n_changes); | |
83096483 | 2380 | if (r < 0) |
d9e5e694 | 2381 | return r; |
af3d8113 | 2382 | r = install_info_may_process(i, &paths, changes, n_changes); |
76adb5b8 LP |
2383 | if (r < 0) |
2384 | return r; | |
0ec0deaa LP |
2385 | |
2386 | assert(i->type == UNIT_FILE_TYPE_REGULAR); | |
83096483 LP |
2387 | } |
2388 | ||
729e3769 | 2389 | /* This will return the number of symlink rules that were |
d25e100b LP |
2390 | supposed to be created, not the ones actually created. This |
2391 | is useful to determine whether the passed files had any | |
2392 | installation data at all. */ | |
b91a3b02 | 2393 | |
b3796dd8 | 2394 | return install_context_apply(scope, &c, &paths, config_path, !!(flags & UNIT_FILE_FORCE), SEARCH_LOAD, changes, n_changes); |
83096483 LP |
2395 | } |
2396 | ||
2397 | int unit_file_disable( | |
2398 | UnitFileScope scope, | |
b3796dd8 | 2399 | UnitFileFlags flags, |
83096483 | 2400 | const char *root_dir, |
7195aa42 | 2401 | char **files, |
83096483 LP |
2402 | UnitFileChange **changes, |
2403 | unsigned *n_changes) { | |
2404 | ||
7fd1b19b | 2405 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
59ccf93d | 2406 | _cleanup_(install_context_done) InstallContext c = {}; |
7fd1b19b | 2407 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; |
e1c5c2b0 | 2408 | const char *config_path; |
0ec0deaa LP |
2409 | char **i; |
2410 | int r; | |
83096483 LP |
2411 | |
2412 | assert(scope >= 0); | |
2413 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2414 | ||
4943d143 | 2415 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
83096483 LP |
2416 | if (r < 0) |
2417 | return r; | |
2418 | ||
b3796dd8 | 2419 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
d0fd66a3 LP |
2420 | if (!config_path) |
2421 | return -ENXIO; | |
83096483 LP |
2422 | |
2423 | STRV_FOREACH(i, files) { | |
0ec0deaa LP |
2424 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) |
2425 | return -EINVAL; | |
2426 | ||
19539807 | 2427 | r = install_info_add(&c, *i, NULL, false, NULL); |
83096483 | 2428 | if (r < 0) |
d9e5e694 | 2429 | return r; |
83096483 LP |
2430 | } |
2431 | ||
637d6e5b | 2432 | r = install_context_mark_for_removal(scope, &c, &paths, &remove_symlinks_to, config_path, changes, n_changes); |
0ec0deaa LP |
2433 | if (r < 0) |
2434 | return r; | |
83096483 | 2435 | |
3b3557c4 | 2436 | return remove_marked_symlinks(remove_symlinks_to, config_path, &paths, !!(flags & UNIT_FILE_DRY_RUN), changes, n_changes); |
83096483 LP |
2437 | } |
2438 | ||
2439 | int unit_file_reenable( | |
2440 | UnitFileScope scope, | |
b3796dd8 | 2441 | UnitFileFlags flags, |
83096483 | 2442 | const char *root_dir, |
7195aa42 | 2443 | char **files, |
83096483 LP |
2444 | UnitFileChange **changes, |
2445 | unsigned *n_changes) { | |
0ec0deaa LP |
2446 | |
2447 | char **n; | |
92d430a9 | 2448 | int r; |
0ec0deaa | 2449 | size_t l, i; |
83096483 | 2450 | |
0ec0deaa LP |
2451 | /* First, we invoke the disable command with only the basename... */ |
2452 | l = strv_length(files); | |
2453 | n = newa(char*, l+1); | |
2454 | for (i = 0; i < l; i++) | |
2455 | n[i] = basename(files[i]); | |
2456 | n[i] = NULL; | |
2457 | ||
b3796dd8 | 2458 | r = unit_file_disable(scope, flags, root_dir, n, changes, n_changes); |
83096483 | 2459 | if (r < 0) |
d9e5e694 | 2460 | return r; |
83096483 | 2461 | |
0ec0deaa | 2462 | /* But the enable command with the full name */ |
b3796dd8 | 2463 | return unit_file_enable(scope, flags, root_dir, files, changes, n_changes); |
83096483 LP |
2464 | } |
2465 | ||
99504dd4 VP |
2466 | int unit_file_set_default( |
2467 | UnitFileScope scope, | |
b3796dd8 | 2468 | UnitFileFlags flags, |
99504dd4 | 2469 | const char *root_dir, |
0ec0deaa | 2470 | const char *name, |
99504dd4 VP |
2471 | UnitFileChange **changes, |
2472 | unsigned *n_changes) { | |
2473 | ||
2474 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; | |
59ccf93d | 2475 | _cleanup_(install_context_done) InstallContext c = {}; |
0ec0deaa | 2476 | UnitFileInstallInfo *i; |
60bec8e4 | 2477 | const char *new_path; |
99504dd4 | 2478 | int r; |
99504dd4 VP |
2479 | |
2480 | assert(scope >= 0); | |
2481 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
0ec0deaa | 2482 | assert(name); |
99504dd4 | 2483 | |
401017e0 | 2484 | if (unit_name_to_type(name) != UNIT_TARGET) /* this also validates the name */ |
0ec0deaa LP |
2485 | return -EINVAL; |
2486 | if (streq(name, SPECIAL_DEFAULT_TARGET)) | |
99504dd4 VP |
2487 | return -EINVAL; |
2488 | ||
4943d143 | 2489 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
99504dd4 VP |
2490 | if (r < 0) |
2491 | return r; | |
2492 | ||
59108fbe | 2493 | r = install_info_discover(scope, &c, &paths, name, 0, &i, changes, n_changes); |
99504dd4 VP |
2494 | if (r < 0) |
2495 | return r; | |
af3d8113 | 2496 | r = install_info_may_process(i, &paths, changes, n_changes); |
76adb5b8 LP |
2497 | if (r < 0) |
2498 | return r; | |
99504dd4 | 2499 | |
401017e0 | 2500 | new_path = strjoina(paths.persistent_config, "/" SPECIAL_DEFAULT_TARGET); |
b3796dd8 | 2501 | return create_symlink(&paths, i->path, new_path, !!(flags & UNIT_FILE_FORCE), changes, n_changes); |
99504dd4 VP |
2502 | } |
2503 | ||
2504 | int unit_file_get_default( | |
2505 | UnitFileScope scope, | |
2506 | const char *root_dir, | |
2507 | char **name) { | |
2508 | ||
2509 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; | |
0ec0deaa LP |
2510 | _cleanup_(install_context_done) InstallContext c = {}; |
2511 | UnitFileInstallInfo *i; | |
2512 | char *n; | |
99504dd4 VP |
2513 | int r; |
2514 | ||
16ed0233 LP |
2515 | assert(scope >= 0); |
2516 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2517 | assert(name); | |
2518 | ||
4943d143 | 2519 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
0ec0deaa LP |
2520 | if (r < 0) |
2521 | return r; | |
99504dd4 | 2522 | |
59108fbe ZJS |
2523 | r = install_info_discover(scope, &c, &paths, SPECIAL_DEFAULT_TARGET, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2524 | &i, NULL, NULL); | |
0ec0deaa LP |
2525 | if (r < 0) |
2526 | return r; | |
af3d8113 | 2527 | r = install_info_may_process(i, &paths, NULL, 0); |
76adb5b8 LP |
2528 | if (r < 0) |
2529 | return r; | |
99504dd4 | 2530 | |
0ec0deaa LP |
2531 | n = strdup(i->name); |
2532 | if (!n) | |
2533 | return -ENOMEM; | |
99504dd4 | 2534 | |
0ec0deaa LP |
2535 | *name = n; |
2536 | return 0; | |
99504dd4 VP |
2537 | } |
2538 | ||
2c52204c | 2539 | static int unit_file_lookup_state( |
83096483 | 2540 | UnitFileScope scope, |
a8ffe6fb | 2541 | const LookupPaths *paths, |
0ec0deaa LP |
2542 | const char *name, |
2543 | UnitFileState *ret) { | |
83096483 | 2544 | |
0ec0deaa LP |
2545 | _cleanup_(install_context_done) InstallContext c = {}; |
2546 | UnitFileInstallInfo *i; | |
2547 | UnitFileState state; | |
2548 | int r; | |
83096483 | 2549 | |
a8ffe6fb | 2550 | assert(paths); |
0ec0deaa | 2551 | assert(name); |
83096483 | 2552 | |
7410616c | 2553 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
83096483 LP |
2554 | return -EINVAL; |
2555 | ||
59108fbe ZJS |
2556 | r = install_info_discover(scope, &c, paths, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2557 | &i, NULL, NULL); | |
0ec0deaa LP |
2558 | if (r < 0) |
2559 | return r; | |
83096483 | 2560 | |
0ec0deaa LP |
2561 | /* Shortcut things, if the caller just wants to know if this unit exists. */ |
2562 | if (!ret) | |
2563 | return 0; | |
83096483 | 2564 | |
0ec0deaa | 2565 | switch (i->type) { |
67820a0c | 2566 | |
0ec0deaa | 2567 | case UNIT_FILE_TYPE_MASKED: |
dfead90d | 2568 | r = path_is_runtime(paths, i->path, true); |
385eb996 LP |
2569 | if (r < 0) |
2570 | return r; | |
2571 | ||
2572 | state = r > 0 ? UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED; | |
0ec0deaa | 2573 | break; |
83096483 | 2574 | |
0ec0deaa | 2575 | case UNIT_FILE_TYPE_REGULAR: |
f4dc1e65 | 2576 | r = path_is_generator(paths, i->path); |
f4139308 LP |
2577 | if (r < 0) |
2578 | return r; | |
2579 | if (r > 0) { | |
2580 | state = UNIT_FILE_GENERATED; | |
2581 | break; | |
2582 | } | |
2583 | ||
e4fca67f LP |
2584 | r = path_is_transient(paths, i->path); |
2585 | if (r < 0) | |
2586 | return r; | |
2587 | if (r > 0) { | |
2588 | state = UNIT_FILE_TRANSIENT; | |
2589 | break; | |
2590 | } | |
2591 | ||
80cb9da3 | 2592 | r = find_symlinks_in_scope(paths, i->name, &state); |
d9e5e694 ZJS |
2593 | if (r < 0) |
2594 | return r; | |
0ec0deaa LP |
2595 | if (r == 0) { |
2596 | if (UNIT_FILE_INSTALL_INFO_HAS_RULES(i)) | |
2597 | state = UNIT_FILE_DISABLED; | |
2598 | else if (UNIT_FILE_INSTALL_INFO_HAS_ALSO(i)) | |
2599 | state = UNIT_FILE_INDIRECT; | |
2600 | else | |
2601 | state = UNIT_FILE_STATIC; | |
2602 | } | |
83096483 | 2603 | |
0ec0deaa LP |
2604 | break; |
2605 | ||
2606 | default: | |
2607 | assert_not_reached("Unexpect unit file type."); | |
83096483 LP |
2608 | } |
2609 | ||
0ec0deaa LP |
2610 | *ret = state; |
2611 | return 0; | |
83096483 LP |
2612 | } |
2613 | ||
0ec0deaa | 2614 | int unit_file_get_state( |
a8ffe6fb ZJS |
2615 | UnitFileScope scope, |
2616 | const char *root_dir, | |
0ec0deaa LP |
2617 | const char *name, |
2618 | UnitFileState *ret) { | |
a8ffe6fb ZJS |
2619 | |
2620 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; | |
2621 | int r; | |
2622 | ||
2623 | assert(scope >= 0); | |
2624 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2625 | assert(name); | |
2626 | ||
4943d143 | 2627 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
a8ffe6fb ZJS |
2628 | if (r < 0) |
2629 | return r; | |
2630 | ||
e4bb56c7 | 2631 | return unit_file_lookup_state(scope, &paths, name, ret); |
a8ffe6fb ZJS |
2632 | } |
2633 | ||
e735decc LP |
2634 | int unit_file_exists(UnitFileScope scope, const LookupPaths *paths, const char *name) { |
2635 | _cleanup_(install_context_done) InstallContext c = {}; | |
2636 | int r; | |
2637 | ||
2638 | assert(paths); | |
2639 | assert(name); | |
2640 | ||
2641 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) | |
2642 | return -EINVAL; | |
2643 | ||
59108fbe | 2644 | r = install_info_discover(scope, &c, paths, name, 0, NULL, NULL, NULL); |
e735decc LP |
2645 | if (r == -ENOENT) |
2646 | return 0; | |
2647 | if (r < 0) | |
2648 | return r; | |
2649 | ||
2650 | return 1; | |
2651 | } | |
2652 | ||
8965d9f8 AC |
2653 | static int read_presets(UnitFileScope scope, const char *root_dir, Presets *presets) { |
2654 | _cleanup_(presets_freep) Presets ps = {}; | |
2655 | size_t n_allocated = 0; | |
7fd1b19b | 2656 | _cleanup_strv_free_ char **files = NULL; |
cba2ef02 | 2657 | char **p; |
83096483 LP |
2658 | int r; |
2659 | ||
2660 | assert(scope >= 0); | |
2661 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
8965d9f8 | 2662 | assert(presets); |
0ec0deaa | 2663 | |
83096483 | 2664 | if (scope == UNIT_FILE_SYSTEM) |
b5084605 | 2665 | r = conf_files_list(&files, ".preset", root_dir, 0, |
a7480dba LP |
2666 | "/etc/systemd/system-preset", |
2667 | "/usr/local/lib/systemd/system-preset", | |
2668 | "/usr/lib/systemd/system-preset", | |
b4bdfefa | 2669 | #ifdef HAVE_SPLIT_USR |
a7480dba | 2670 | "/lib/systemd/system-preset", |
b4bdfefa | 2671 | #endif |
83096483 LP |
2672 | NULL); |
2673 | else if (scope == UNIT_FILE_GLOBAL) | |
b5084605 | 2674 | r = conf_files_list(&files, ".preset", root_dir, 0, |
a7480dba LP |
2675 | "/etc/systemd/user-preset", |
2676 | "/usr/local/lib/systemd/user-preset", | |
2677 | "/usr/lib/systemd/user-preset", | |
83096483 | 2678 | NULL); |
8965d9f8 AC |
2679 | else { |
2680 | *presets = (Presets){}; | |
2681 | ||
2682 | return 0; | |
2683 | } | |
83096483 LP |
2684 | |
2685 | if (r < 0) | |
2686 | return r; | |
2687 | ||
cba2ef02 | 2688 | STRV_FOREACH(p, files) { |
7fd1b19b | 2689 | _cleanup_fclose_ FILE *f; |
0ec0deaa | 2690 | char line[LINE_MAX]; |
d544d1a4 | 2691 | int n = 0; |
83096483 | 2692 | |
cba2ef02 | 2693 | f = fopen(*p, "re"); |
83096483 LP |
2694 | if (!f) { |
2695 | if (errno == ENOENT) | |
2696 | continue; | |
2697 | ||
d9e5e694 | 2698 | return -errno; |
83096483 LP |
2699 | } |
2700 | ||
0ec0deaa | 2701 | FOREACH_LINE(line, f, return -errno) { |
8965d9f8 | 2702 | PresetRule rule = {}; |
0ec0deaa LP |
2703 | const char *parameter; |
2704 | char *l; | |
83096483 LP |
2705 | |
2706 | l = strstrip(line); | |
d544d1a4 | 2707 | n++; |
83096483 | 2708 | |
0ec0deaa LP |
2709 | if (isempty(l)) |
2710 | continue; | |
2711 | if (strchr(COMMENTS, *l)) | |
83096483 LP |
2712 | continue; |
2713 | ||
0ec0deaa LP |
2714 | parameter = first_word(l, "enable"); |
2715 | if (parameter) { | |
8965d9f8 | 2716 | char *pattern; |
d9e5e694 | 2717 | |
8965d9f8 AC |
2718 | pattern = strdup(parameter); |
2719 | if (!pattern) | |
2720 | return -ENOMEM; | |
2721 | ||
2722 | rule = (PresetRule) { | |
2723 | .pattern = pattern, | |
2724 | .action = PRESET_ENABLE, | |
2725 | }; | |
0ec0deaa | 2726 | } |
83096483 | 2727 | |
0ec0deaa LP |
2728 | parameter = first_word(l, "disable"); |
2729 | if (parameter) { | |
8965d9f8 | 2730 | char *pattern; |
d9e5e694 | 2731 | |
8965d9f8 AC |
2732 | pattern = strdup(parameter); |
2733 | if (!pattern) | |
2734 | return -ENOMEM; | |
2735 | ||
2736 | rule = (PresetRule) { | |
2737 | .pattern = pattern, | |
2738 | .action = PRESET_DISABLE, | |
2739 | }; | |
2740 | } | |
2741 | ||
2742 | if (rule.action) { | |
2743 | if (!GREEDY_REALLOC(ps.rules, n_allocated, ps.n_rules + 1)) | |
2744 | return -ENOMEM; | |
2745 | ||
2746 | ps.rules[ps.n_rules++] = rule; | |
0ec0deaa LP |
2747 | continue; |
2748 | } | |
2749 | ||
d544d1a4 | 2750 | log_syntax(NULL, LOG_WARNING, *p, n, 0, "Couldn't parse line '%s'. Ignoring.", line); |
83096483 | 2751 | } |
83096483 LP |
2752 | } |
2753 | ||
8965d9f8 AC |
2754 | *presets = ps; |
2755 | ps = (Presets){}; | |
2756 | ||
2757 | return 0; | |
2758 | } | |
2759 | ||
2760 | static int query_presets(const char *name, const Presets presets) { | |
2761 | PresetAction action = PRESET_UNKNOWN; | |
2762 | size_t i; | |
2763 | ||
2764 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) | |
2765 | return -EINVAL; | |
2766 | ||
2767 | for (i = 0; i < presets.n_rules; i++) | |
2768 | if (fnmatch(presets.rules[i].pattern, name, FNM_NOESCAPE) == 0) { | |
2769 | action = presets.rules[i].action; | |
2770 | break; | |
2771 | } | |
2772 | ||
2773 | switch (action) { | |
2774 | case PRESET_UNKNOWN: | |
2775 | log_debug("Preset files don't specify rule for %s. Enabling.", name); | |
2776 | return 1; | |
2777 | case PRESET_ENABLE: | |
2778 | log_debug("Preset files say enable %s.", name); | |
2779 | return 1; | |
2780 | case PRESET_DISABLE: | |
2781 | log_debug("Preset files say disable %s.", name); | |
2782 | return 0; | |
2783 | default: | |
2784 | assert_not_reached("invalid preset action"); | |
2785 | } | |
2786 | } | |
2787 | ||
2788 | int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char *name) { | |
2789 | _cleanup_(presets_freep) Presets presets = {}; | |
2790 | int r; | |
2791 | ||
2792 | r = read_presets(scope, root_dir, &presets); | |
2793 | if (r < 0) | |
2794 | return r; | |
2795 | ||
2796 | return query_presets(name, presets); | |
83096483 LP |
2797 | } |
2798 | ||
0ec0deaa LP |
2799 | static int execute_preset( |
2800 | UnitFileScope scope, | |
2801 | InstallContext *plus, | |
2802 | InstallContext *minus, | |
2803 | const LookupPaths *paths, | |
2804 | const char *config_path, | |
0ec0deaa LP |
2805 | char **files, |
2806 | UnitFilePresetMode mode, | |
2807 | bool force, | |
2808 | UnitFileChange **changes, | |
2809 | unsigned *n_changes) { | |
2810 | ||
2811 | int r; | |
2812 | ||
2813 | assert(plus); | |
2814 | assert(minus); | |
2815 | assert(paths); | |
2816 | assert(config_path); | |
2817 | ||
2818 | if (mode != UNIT_FILE_PRESET_ENABLE_ONLY) { | |
2819 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
2820 | ||
637d6e5b | 2821 | r = install_context_mark_for_removal(scope, minus, paths, &remove_symlinks_to, config_path, changes, n_changes); |
0ec0deaa LP |
2822 | if (r < 0) |
2823 | return r; | |
2824 | ||
3b3557c4 | 2825 | r = remove_marked_symlinks(remove_symlinks_to, config_path, paths, false, changes, n_changes); |
0ec0deaa LP |
2826 | } else |
2827 | r = 0; | |
2828 | ||
2829 | if (mode != UNIT_FILE_PRESET_DISABLE_ONLY) { | |
2830 | int q; | |
2831 | ||
2832 | /* Returns number of symlinks that where supposed to be installed. */ | |
e4bb56c7 | 2833 | q = install_context_apply(scope, plus, paths, config_path, force, SEARCH_LOAD, changes, n_changes); |
0ec0deaa LP |
2834 | if (r >= 0) { |
2835 | if (q < 0) | |
2836 | r = q; | |
2837 | else | |
596fc263 | 2838 | r += q; |
0ec0deaa LP |
2839 | } |
2840 | } | |
2841 | ||
2842 | return r; | |
2843 | } | |
2844 | ||
2845 | static int preset_prepare_one( | |
2846 | UnitFileScope scope, | |
2847 | InstallContext *plus, | |
2848 | InstallContext *minus, | |
2849 | LookupPaths *paths, | |
af3d8113 | 2850 | const char *name, |
8965d9f8 | 2851 | Presets presets, |
af3d8113 ZJS |
2852 | UnitFileChange **changes, |
2853 | unsigned *n_changes) { | |
0ec0deaa | 2854 | |
11e11fd5 | 2855 | _cleanup_(install_context_done) InstallContext tmp = {}; |
0ec0deaa LP |
2856 | UnitFileInstallInfo *i; |
2857 | int r; | |
2858 | ||
11e11fd5 | 2859 | if (install_info_find(plus, name) || install_info_find(minus, name)) |
0ec0deaa LP |
2860 | return 0; |
2861 | ||
59108fbe ZJS |
2862 | r = install_info_discover(scope, &tmp, paths, name, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2863 | &i, changes, n_changes); | |
11e11fd5 ZJS |
2864 | if (r < 0) |
2865 | return r; | |
2866 | if (!streq(name, i->name)) { | |
2867 | log_debug("Skipping %s because is an alias for %s", name, i->name); | |
2868 | return 0; | |
2869 | } | |
2870 | ||
8965d9f8 | 2871 | r = query_presets(name, presets); |
0ec0deaa LP |
2872 | if (r < 0) |
2873 | return r; | |
2874 | ||
2875 | if (r > 0) { | |
59108fbe ZJS |
2876 | r = install_info_discover(scope, plus, paths, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2877 | &i, changes, n_changes); | |
0ec0deaa LP |
2878 | if (r < 0) |
2879 | return r; | |
2880 | ||
af3d8113 | 2881 | r = install_info_may_process(i, paths, changes, n_changes); |
76adb5b8 LP |
2882 | if (r < 0) |
2883 | return r; | |
0ec0deaa | 2884 | } else |
59108fbe ZJS |
2885 | r = install_info_discover(scope, minus, paths, name, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2886 | &i, changes, n_changes); | |
0ec0deaa LP |
2887 | |
2888 | return r; | |
2889 | } | |
2890 | ||
83096483 LP |
2891 | int unit_file_preset( |
2892 | UnitFileScope scope, | |
b3796dd8 | 2893 | UnitFileFlags flags, |
83096483 | 2894 | const char *root_dir, |
7195aa42 | 2895 | char **files, |
d309c1c3 | 2896 | UnitFilePresetMode mode, |
83096483 LP |
2897 | UnitFileChange **changes, |
2898 | unsigned *n_changes) { | |
2899 | ||
59ccf93d | 2900 | _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; |
da39f6a6 | 2901 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
8965d9f8 | 2902 | _cleanup_(presets_freep) Presets presets = {}; |
e1c5c2b0 | 2903 | const char *config_path; |
da39f6a6 | 2904 | char **i; |
0ec0deaa | 2905 | int r; |
83096483 LP |
2906 | |
2907 | assert(scope >= 0); | |
2908 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
86bbe5bf | 2909 | assert(mode < _UNIT_FILE_PRESET_MAX); |
83096483 | 2910 | |
4943d143 | 2911 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
83096483 LP |
2912 | if (r < 0) |
2913 | return r; | |
2914 | ||
b3796dd8 | 2915 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
d0fd66a3 LP |
2916 | if (!config_path) |
2917 | return -ENXIO; | |
83096483 | 2918 | |
8965d9f8 AC |
2919 | r = read_presets(scope, root_dir, &presets); |
2920 | if (r < 0) | |
2921 | return r; | |
83096483 | 2922 | |
8965d9f8 | 2923 | STRV_FOREACH(i, files) { |
ff56349d | 2924 | r = preset_prepare_one(scope, &plus, &minus, &paths, *i, presets, changes, n_changes); |
83096483 | 2925 | if (r < 0) |
d9e5e694 | 2926 | return r; |
83096483 LP |
2927 | } |
2928 | ||
b3796dd8 | 2929 | return execute_preset(scope, &plus, &minus, &paths, config_path, files, mode, !!(flags & UNIT_FILE_FORCE), changes, n_changes); |
d309c1c3 LP |
2930 | } |
2931 | ||
2932 | int unit_file_preset_all( | |
2933 | UnitFileScope scope, | |
b3796dd8 | 2934 | UnitFileFlags flags, |
d309c1c3 LP |
2935 | const char *root_dir, |
2936 | UnitFilePresetMode mode, | |
d309c1c3 LP |
2937 | UnitFileChange **changes, |
2938 | unsigned *n_changes) { | |
2939 | ||
59ccf93d | 2940 | _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; |
d309c1c3 | 2941 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
8965d9f8 | 2942 | _cleanup_(presets_freep) Presets presets = {}; |
e1c5c2b0 | 2943 | const char *config_path = NULL; |
d309c1c3 | 2944 | char **i; |
0ec0deaa | 2945 | int r; |
d309c1c3 LP |
2946 | |
2947 | assert(scope >= 0); | |
2948 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
86bbe5bf | 2949 | assert(mode < _UNIT_FILE_PRESET_MAX); |
d309c1c3 | 2950 | |
4943d143 | 2951 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
d309c1c3 LP |
2952 | if (r < 0) |
2953 | return r; | |
2954 | ||
b3796dd8 | 2955 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
d0fd66a3 LP |
2956 | if (!config_path) |
2957 | return -ENXIO; | |
d309c1c3 | 2958 | |
8965d9f8 AC |
2959 | r = read_presets(scope, root_dir, &presets); |
2960 | if (r < 0) | |
2961 | return r; | |
2962 | ||
a3c4eb07 | 2963 | STRV_FOREACH(i, paths.search_path) { |
d309c1c3 | 2964 | _cleanup_closedir_ DIR *d = NULL; |
d25e100b | 2965 | struct dirent *de; |
d309c1c3 | 2966 | |
401017e0 | 2967 | d = opendir(*i); |
d309c1c3 LP |
2968 | if (!d) { |
2969 | if (errno == ENOENT) | |
2970 | continue; | |
2971 | ||
2972 | return -errno; | |
2973 | } | |
2974 | ||
d25e100b | 2975 | FOREACH_DIRENT(de, d, return -errno) { |
d309c1c3 | 2976 | |
7410616c | 2977 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
d309c1c3 LP |
2978 | continue; |
2979 | ||
2980 | dirent_ensure_type(d, de); | |
2981 | ||
0ec0deaa | 2982 | if (!IN_SET(de->d_type, DT_LNK, DT_REG)) |
d309c1c3 LP |
2983 | continue; |
2984 | ||
af3d8113 | 2985 | /* we don't pass changes[] in, because we want to handle errors on our own */ |
ff56349d | 2986 | r = preset_prepare_one(scope, &plus, &minus, &paths, de->d_name, presets, NULL, 0); |
9a0a413a ZJS |
2987 | if (r == -ERFKILL) |
2988 | r = unit_file_changes_add(changes, n_changes, | |
2989 | UNIT_FILE_IS_MASKED, de->d_name, NULL); | |
893275df ZJS |
2990 | else if (r == -ENOLINK) |
2991 | r = unit_file_changes_add(changes, n_changes, | |
2992 | UNIT_FILE_IS_DANGLING, de->d_name, NULL); | |
d309c1c3 LP |
2993 | if (r < 0) |
2994 | return r; | |
2995 | } | |
2996 | } | |
2997 | ||
b3796dd8 | 2998 | return execute_preset(scope, &plus, &minus, &paths, config_path, NULL, mode, !!(flags & UNIT_FILE_FORCE), changes, n_changes); |
83096483 LP |
2999 | } |
3000 | ||
59ccf93d LP |
3001 | static void unit_file_list_free_one(UnitFileList *f) { |
3002 | if (!f) | |
d9e5e694 ZJS |
3003 | return; |
3004 | ||
59ccf93d LP |
3005 | free(f->path); |
3006 | free(f); | |
d9e5e694 | 3007 | } |
59ccf93d | 3008 | |
0ec0deaa LP |
3009 | Hashmap* unit_file_list_free(Hashmap *h) { |
3010 | UnitFileList *i; | |
3011 | ||
3012 | while ((i = hashmap_steal_first(h))) | |
3013 | unit_file_list_free_one(i); | |
3014 | ||
3015 | return hashmap_free(h); | |
3016 | } | |
3017 | ||
59ccf93d | 3018 | DEFINE_TRIVIAL_CLEANUP_FUNC(UnitFileList*, unit_file_list_free_one); |
d9e5e694 | 3019 | |
83096483 LP |
3020 | int unit_file_get_list( |
3021 | UnitFileScope scope, | |
3022 | const char *root_dir, | |
313fe66f | 3023 | Hashmap *h, |
3024 | char **states, | |
3025 | char **patterns) { | |
83096483 | 3026 | |
7fd1b19b | 3027 | _cleanup_lookup_paths_free_ LookupPaths paths = {}; |
d9e5e694 | 3028 | char **i; |
83096483 LP |
3029 | int r; |
3030 | ||
3031 | assert(scope >= 0); | |
3032 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
3033 | assert(h); | |
3034 | ||
4943d143 | 3035 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
83096483 LP |
3036 | if (r < 0) |
3037 | return r; | |
3038 | ||
a3c4eb07 | 3039 | STRV_FOREACH(i, paths.search_path) { |
da39f6a6 | 3040 | _cleanup_closedir_ DIR *d = NULL; |
d25e100b | 3041 | struct dirent *de; |
83096483 | 3042 | |
401017e0 | 3043 | d = opendir(*i); |
83096483 LP |
3044 | if (!d) { |
3045 | if (errno == ENOENT) | |
3046 | continue; | |
a1feacf7 | 3047 | if (IN_SET(errno, ENOTDIR, EACCES)) { |
25f027c5 | 3048 | log_debug_errno(errno, "Failed to open \"%s\": %m", *i); |
a1feacf7 ZJS |
3049 | continue; |
3050 | } | |
83096483 | 3051 | |
d9e5e694 | 3052 | return -errno; |
83096483 LP |
3053 | } |
3054 | ||
d25e100b | 3055 | FOREACH_DIRENT(de, d, return -errno) { |
59ccf93d | 3056 | _cleanup_(unit_file_list_free_onep) UnitFileList *f = NULL; |
83096483 | 3057 | |
7410616c | 3058 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
83096483 LP |
3059 | continue; |
3060 | ||
313fe66f | 3061 | if (!strv_fnmatch_or_empty(patterns, de->d_name, FNM_NOESCAPE)) |
3062 | continue; | |
3063 | ||
83096483 LP |
3064 | if (hashmap_get(h, de->d_name)) |
3065 | continue; | |
3066 | ||
da39f6a6 | 3067 | dirent_ensure_type(d, de); |
83096483 | 3068 | |
da39f6a6 | 3069 | if (!IN_SET(de->d_type, DT_LNK, DT_REG)) |
83096483 LP |
3070 | continue; |
3071 | ||
3072 | f = new0(UnitFileList, 1); | |
d9e5e694 ZJS |
3073 | if (!f) |
3074 | return -ENOMEM; | |
83096483 | 3075 | |
401017e0 | 3076 | f->path = path_make_absolute(de->d_name, *i); |
d9e5e694 ZJS |
3077 | if (!f->path) |
3078 | return -ENOMEM; | |
83096483 | 3079 | |
401017e0 | 3080 | r = unit_file_lookup_state(scope, &paths, de->d_name, &f->state); |
d9e5e694 | 3081 | if (r < 0) |
0ec0deaa | 3082 | f->state = UNIT_FILE_BAD; |
81fc054d | 3083 | |
313fe66f | 3084 | if (!strv_isempty(states) && |
3085 | !strv_contains(states, unit_file_state_to_string(f->state))) | |
3086 | continue; | |
3087 | ||
2b6bf07d | 3088 | r = hashmap_put(h, basename(f->path), f); |
d9e5e694 ZJS |
3089 | if (r < 0) |
3090 | return r; | |
0ec0deaa | 3091 | |
d9e5e694 | 3092 | f = NULL; /* prevent cleanup */ |
83096483 LP |
3093 | } |
3094 | } | |
3095 | ||
77cd2c87 | 3096 | return 0; |
83096483 LP |
3097 | } |
3098 | ||
3099 | static const char* const unit_file_state_table[_UNIT_FILE_STATE_MAX] = { | |
3100 | [UNIT_FILE_ENABLED] = "enabled", | |
771faa9a | 3101 | [UNIT_FILE_ENABLED_RUNTIME] = "enabled-runtime", |
83096483 LP |
3102 | [UNIT_FILE_LINKED] = "linked", |
3103 | [UNIT_FILE_LINKED_RUNTIME] = "linked-runtime", | |
3104 | [UNIT_FILE_MASKED] = "masked", | |
3105 | [UNIT_FILE_MASKED_RUNTIME] = "masked-runtime", | |
3106 | [UNIT_FILE_STATIC] = "static", | |
b5b46d59 | 3107 | [UNIT_FILE_DISABLED] = "disabled", |
aedd4012 | 3108 | [UNIT_FILE_INDIRECT] = "indirect", |
f4139308 | 3109 | [UNIT_FILE_GENERATED] = "generated", |
e4fca67f | 3110 | [UNIT_FILE_TRANSIENT] = "transient", |
0ec0deaa | 3111 | [UNIT_FILE_BAD] = "bad", |
83096483 LP |
3112 | }; |
3113 | ||
3114 | DEFINE_STRING_TABLE_LOOKUP(unit_file_state, UnitFileState); | |
c0576cd6 LP |
3115 | |
3116 | static const char* const unit_file_change_type_table[_UNIT_FILE_CHANGE_TYPE_MAX] = { | |
3117 | [UNIT_FILE_SYMLINK] = "symlink", | |
3118 | [UNIT_FILE_UNLINK] = "unlink", | |
9a0a413a | 3119 | [UNIT_FILE_IS_MASKED] = "masked", |
893275df | 3120 | [UNIT_FILE_IS_DANGLING] = "dangling", |
c0576cd6 LP |
3121 | }; |
3122 | ||
3123 | DEFINE_STRING_TABLE_LOOKUP(unit_file_change_type, UnitFileChangeType); | |
d309c1c3 | 3124 | |
86bbe5bf | 3125 | static const char* const unit_file_preset_mode_table[_UNIT_FILE_PRESET_MAX] = { |
d309c1c3 LP |
3126 | [UNIT_FILE_PRESET_FULL] = "full", |
3127 | [UNIT_FILE_PRESET_ENABLE_ONLY] = "enable-only", | |
3128 | [UNIT_FILE_PRESET_DISABLE_ONLY] = "disable-only", | |
3129 | }; | |
3130 | ||
3131 | DEFINE_STRING_TABLE_LOOKUP(unit_file_preset_mode, UnitFilePresetMode); |