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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
83096483 LP |
2 | |
3 | #include <errno.h> | |
4 | #include <fcntl.h> | |
83096483 | 5 | #include <fnmatch.h> |
a8fbdf54 TA |
6 | #include <limits.h> |
7 | #include <stddef.h> | |
8 | #include <stdio.h> | |
9 | #include <stdlib.h> | |
07630cea | 10 | #include <unistd.h> |
83096483 | 11 | |
b5efdb8a | 12 | #include "alloc-util.h" |
07630cea LP |
13 | #include "conf-files.h" |
14 | #include "conf-parser.h" | |
f7767d76 | 15 | #include "def.h" |
a0956174 | 16 | #include "dirent-util.h" |
a8fbdf54 | 17 | #include "extract-word.h" |
a0956174 | 18 | #include "fd-util.h" |
0ec0deaa | 19 | #include "fileio.h" |
f4f15635 | 20 | #include "fs-util.h" |
83096483 | 21 | #include "hashmap.h" |
07630cea | 22 | #include "install-printf.h" |
a0956174 | 23 | #include "install.h" |
a760db24 | 24 | #include "locale-util.h" |
a8fbdf54 TA |
25 | #include "log.h" |
26 | #include "macro.h" | |
07630cea | 27 | #include "mkdir.h" |
83096483 | 28 | #include "path-lookup.h" |
07630cea | 29 | #include "path-util.h" |
344ca755 | 30 | #include "rm-rf.h" |
07630cea LP |
31 | #include "set.h" |
32 | #include "special.h" | |
8fcde012 | 33 | #include "stat-util.h" |
8b43440b | 34 | #include "string-table.h" |
07630cea | 35 | #include "string-util.h" |
83096483 | 36 | #include "strv.h" |
5cfa33e0 | 37 | #include "unit-file.h" |
83096483 | 38 | |
0ec0deaa LP |
39 | #define UNIT_FILE_FOLLOW_SYMLINK_MAX 64 |
40 | ||
41 | typedef enum SearchFlags { | |
ef31828d LP |
42 | SEARCH_LOAD = 1 << 0, |
43 | SEARCH_FOLLOW_CONFIG_SYMLINKS = 1 << 1, | |
44 | SEARCH_DROPIN = 1 << 2, | |
0ec0deaa LP |
45 | } SearchFlags; |
46 | ||
83096483 | 47 | typedef struct { |
0ec0deaa LP |
48 | OrderedHashmap *will_process; |
49 | OrderedHashmap *have_processed; | |
83096483 LP |
50 | } InstallContext; |
51 | ||
8965d9f8 AC |
52 | typedef enum { |
53 | PRESET_UNKNOWN, | |
54 | PRESET_ENABLE, | |
55 | PRESET_DISABLE, | |
56 | } PresetAction; | |
57 | ||
58 | typedef struct { | |
59 | char *pattern; | |
60 | PresetAction action; | |
4c9565ee | 61 | char **instances; |
8965d9f8 AC |
62 | } PresetRule; |
63 | ||
64 | typedef struct { | |
65 | PresetRule *rules; | |
66 | size_t n_rules; | |
67 | } Presets; | |
68 | ||
a1e92eee | 69 | static bool unit_file_install_info_has_rules(const UnitFileInstallInfo *i) { |
7a7ec2bf ZJS |
70 | assert(i); |
71 | ||
72 | return !strv_isempty(i->aliases) || | |
73 | !strv_isempty(i->wanted_by) || | |
74 | !strv_isempty(i->required_by); | |
75 | } | |
76 | ||
a1e92eee | 77 | static bool unit_file_install_info_has_also(const UnitFileInstallInfo *i) { |
7a7ec2bf ZJS |
78 | assert(i); |
79 | ||
80 | return !strv_isempty(i->also); | |
81 | } | |
82 | ||
a1e92eee | 83 | static void presets_freep(Presets *p) { |
8965d9f8 AC |
84 | size_t i; |
85 | ||
86 | if (!p) | |
87 | return; | |
88 | ||
4c9565ee | 89 | for (i = 0; i < p->n_rules; i++) { |
8965d9f8 | 90 | free(p->rules[i].pattern); |
4c9565ee RB |
91 | strv_free(p->rules[i].instances); |
92 | } | |
8965d9f8 AC |
93 | |
94 | free(p->rules); | |
95 | p->n_rules = 0; | |
96 | } | |
97 | ||
b82f71c7 | 98 | static const char *const unit_file_type_table[_UNIT_FILE_TYPE_MAX] = { |
64f9280e ZJS |
99 | [UNIT_FILE_TYPE_REGULAR] = "regular", |
100 | [UNIT_FILE_TYPE_SYMLINK] = "symlink", | |
101 | [UNIT_FILE_TYPE_MASKED] = "masked", | |
102 | }; | |
103 | ||
104 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(unit_file_type, UnitFileType); | |
105 | ||
32c0ed7b | 106 | static int in_search_path(const LookupPaths *p, const char *path) { |
8f294b45 | 107 | _cleanup_free_ char *parent = NULL; |
8f294b45 LP |
108 | |
109 | assert(path); | |
110 | ||
5f311f8c LP |
111 | parent = dirname_malloc(path); |
112 | if (!parent) | |
113 | return -ENOMEM; | |
8f294b45 | 114 | |
9a2ec8f7 | 115 | return path_strv_contains(p->search_path, parent); |
8f294b45 LP |
116 | } |
117 | ||
401017e0 | 118 | static const char* skip_root(const LookupPaths *p, const char *path) { |
8f9364f9 | 119 | char *e; |
401017e0 | 120 | |
8f9364f9 LP |
121 | assert(p); |
122 | assert(path); | |
401017e0 | 123 | |
8f9364f9 LP |
124 | if (!p->root_dir) |
125 | return path; | |
401017e0 | 126 | |
8f9364f9 LP |
127 | e = path_startswith(path, p->root_dir); |
128 | if (!e) | |
129 | return NULL; | |
130 | ||
131 | /* Make sure the returned path starts with a slash */ | |
132 | if (e[0] != '/') { | |
133 | if (e == path || e[-1] != '/') | |
134 | return NULL; | |
401017e0 | 135 | |
8f9364f9 | 136 | e--; |
401017e0 LP |
137 | } |
138 | ||
8f9364f9 | 139 | return e; |
401017e0 LP |
140 | } |
141 | ||
f4dc1e65 | 142 | static int path_is_generator(const LookupPaths *p, const char *path) { |
f4139308 LP |
143 | _cleanup_free_ char *parent = NULL; |
144 | ||
e1c5c2b0 | 145 | assert(p); |
f4139308 LP |
146 | assert(path); |
147 | ||
148 | parent = dirname_malloc(path); | |
149 | if (!parent) | |
150 | return -ENOMEM; | |
151 | ||
24737c29 ZJS |
152 | return path_equal_ptr(parent, p->generator) || |
153 | path_equal_ptr(parent, p->generator_early) || | |
154 | path_equal_ptr(parent, p->generator_late); | |
f4139308 LP |
155 | } |
156 | ||
e4fca67f LP |
157 | static int path_is_transient(const LookupPaths *p, const char *path) { |
158 | _cleanup_free_ char *parent = NULL; | |
159 | ||
160 | assert(p); | |
161 | assert(path); | |
162 | ||
163 | parent = dirname_malloc(path); | |
164 | if (!parent) | |
165 | return -ENOMEM; | |
166 | ||
24737c29 | 167 | return path_equal_ptr(parent, p->transient); |
e4fca67f LP |
168 | } |
169 | ||
344ca755 | 170 | static int path_is_control(const LookupPaths *p, const char *path) { |
e1c5c2b0 | 171 | _cleanup_free_ char *parent = NULL; |
0ec0deaa | 172 | |
e1c5c2b0 | 173 | assert(p); |
0ec0deaa LP |
174 | assert(path); |
175 | ||
344ca755 LP |
176 | parent = dirname_malloc(path); |
177 | if (!parent) | |
178 | return -ENOMEM; | |
0ec0deaa | 179 | |
24737c29 ZJS |
180 | return path_equal_ptr(parent, p->persistent_control) || |
181 | path_equal_ptr(parent, p->runtime_control); | |
344ca755 LP |
182 | } |
183 | ||
dfead90d | 184 | static int path_is_config(const LookupPaths *p, const char *path, bool check_parent) { |
344ca755 LP |
185 | _cleanup_free_ char *parent = NULL; |
186 | ||
187 | assert(p); | |
188 | assert(path); | |
189 | ||
d7604756 ZJS |
190 | /* Note that we do *not* have generic checks for /etc or /run in place, since with |
191 | * them we couldn't discern configuration from transient or generated units */ | |
0ec0deaa | 192 | |
dfead90d LP |
193 | if (check_parent) { |
194 | parent = dirname_malloc(path); | |
195 | if (!parent) | |
196 | return -ENOMEM; | |
197 | ||
198 | path = parent; | |
199 | } | |
0ec0deaa | 200 | |
dfead90d LP |
201 | return path_equal_ptr(path, p->persistent_config) || |
202 | path_equal_ptr(path, p->runtime_config); | |
0ec0deaa LP |
203 | } |
204 | ||
dfead90d | 205 | static int path_is_runtime(const LookupPaths *p, const char *path, bool check_parent) { |
385eb996 | 206 | _cleanup_free_ char *parent = NULL; |
401017e0 | 207 | const char *rpath; |
385eb996 LP |
208 | |
209 | assert(p); | |
210 | assert(path); | |
211 | ||
d7604756 ZJS |
212 | /* Everything in /run is considered runtime. On top of that we also add |
213 | * explicit checks for the various runtime directories, as safety net. */ | |
344ca755 | 214 | |
401017e0 LP |
215 | rpath = skip_root(p, path); |
216 | if (rpath && path_startswith(rpath, "/run")) | |
385eb996 LP |
217 | return true; |
218 | ||
dfead90d LP |
219 | if (check_parent) { |
220 | parent = dirname_malloc(path); | |
221 | if (!parent) | |
222 | return -ENOMEM; | |
385eb996 | 223 | |
dfead90d LP |
224 | path = parent; |
225 | } | |
226 | ||
227 | return path_equal_ptr(path, p->runtime_config) || | |
228 | path_equal_ptr(path, p->generator) || | |
229 | path_equal_ptr(path, p->generator_early) || | |
230 | path_equal_ptr(path, p->generator_late) || | |
231 | path_equal_ptr(path, p->transient) || | |
232 | path_equal_ptr(path, p->runtime_control); | |
344ca755 LP |
233 | } |
234 | ||
235 | static int path_is_vendor(const LookupPaths *p, const char *path) { | |
236 | const char *rpath; | |
237 | ||
238 | assert(p); | |
239 | assert(path); | |
240 | ||
241 | rpath = skip_root(p, path); | |
242 | if (!rpath) | |
243 | return 0; | |
244 | ||
245 | if (path_startswith(rpath, "/usr")) | |
246 | return true; | |
247 | ||
349cc4a5 | 248 | #if HAVE_SPLIT_USR |
344ca755 LP |
249 | if (path_startswith(rpath, "/lib")) |
250 | return true; | |
251 | #endif | |
252 | ||
253 | return path_equal(rpath, SYSTEM_DATA_UNIT_PATH); | |
385eb996 LP |
254 | } |
255 | ||
0ec0deaa LP |
256 | int unit_file_changes_add( |
257 | UnitFileChange **changes, | |
da6053d0 | 258 | size_t *n_changes, |
0ec0deaa LP |
259 | UnitFileChangeType type, |
260 | const char *path, | |
261 | const char *source) { | |
262 | ||
12bf0ae4 | 263 | _cleanup_free_ char *p = NULL, *s = NULL; |
0ec0deaa | 264 | UnitFileChange *c; |
0ec0deaa LP |
265 | |
266 | assert(path); | |
267 | assert(!changes == !n_changes); | |
268 | ||
269 | if (!changes) | |
270 | return 0; | |
271 | ||
62d74c78 | 272 | c = reallocarray(*changes, *n_changes + 1, sizeof(UnitFileChange)); |
0ec0deaa LP |
273 | if (!c) |
274 | return -ENOMEM; | |
0ec0deaa | 275 | *changes = c; |
0ec0deaa | 276 | |
12bf0ae4 ZJS |
277 | p = strdup(path); |
278 | if (source) | |
279 | s = strdup(source); | |
0ec0deaa | 280 | |
12bf0ae4 ZJS |
281 | if (!p || (source && !s)) |
282 | return -ENOMEM; | |
0ec0deaa | 283 | |
858d36c1 | 284 | path_simplify(p, false); |
12bf0ae4 | 285 | if (s) |
858d36c1 | 286 | path_simplify(s, false); |
0ec0deaa | 287 | |
12bf0ae4 ZJS |
288 | c[*n_changes] = (UnitFileChange) { type, p, s }; |
289 | p = s = NULL; | |
290 | (*n_changes) ++; | |
0ec0deaa LP |
291 | return 0; |
292 | } | |
293 | ||
da6053d0 LP |
294 | void unit_file_changes_free(UnitFileChange *changes, size_t n_changes) { |
295 | size_t i; | |
0ec0deaa LP |
296 | |
297 | assert(changes || n_changes == 0); | |
298 | ||
0ec0deaa LP |
299 | for (i = 0; i < n_changes; i++) { |
300 | free(changes[i].path); | |
301 | free(changes[i].source); | |
302 | } | |
303 | ||
304 | free(changes); | |
305 | } | |
306 | ||
da6053d0 LP |
307 | void unit_file_dump_changes(int r, const char *verb, const UnitFileChange *changes, size_t n_changes, bool quiet) { |
308 | size_t i; | |
af3d8113 ZJS |
309 | bool logged = false; |
310 | ||
311 | assert(changes || n_changes == 0); | |
312 | /* If verb is not specified, errors are not allowed! */ | |
313 | assert(verb || r >= 0); | |
314 | ||
315 | for (i = 0; i < n_changes; i++) { | |
316 | assert(verb || changes[i].type >= 0); | |
317 | ||
318 | switch(changes[i].type) { | |
319 | case UNIT_FILE_SYMLINK: | |
320 | if (!quiet) | |
a760db24 ZJS |
321 | log_info("Created symlink %s %s %s.", |
322 | changes[i].path, | |
9a6f746f | 323 | special_glyph(SPECIAL_GLYPH_ARROW), |
a760db24 | 324 | changes[i].source); |
af3d8113 ZJS |
325 | break; |
326 | case UNIT_FILE_UNLINK: | |
327 | if (!quiet) | |
328 | log_info("Removed %s.", changes[i].path); | |
329 | break; | |
330 | case UNIT_FILE_IS_MASKED: | |
331 | if (!quiet) | |
332 | log_info("Unit %s is masked, ignoring.", changes[i].path); | |
333 | break; | |
893275df ZJS |
334 | case UNIT_FILE_IS_DANGLING: |
335 | if (!quiet) | |
336 | log_info("Unit %s is an alias to a unit that is not present, ignoring.", | |
337 | changes[i].path); | |
338 | break; | |
af3d8113 ZJS |
339 | case -EEXIST: |
340 | if (changes[i].source) | |
341 | log_error_errno(changes[i].type, | |
342 | "Failed to %s unit, file %s already exists and is a symlink to %s.", | |
343 | verb, changes[i].path, changes[i].source); | |
344 | else | |
345 | log_error_errno(changes[i].type, | |
346 | "Failed to %s unit, file %s already exists.", | |
347 | verb, changes[i].path); | |
348 | logged = true; | |
349 | break; | |
350 | case -ERFKILL: | |
351 | log_error_errno(changes[i].type, "Failed to %s unit, unit %s is masked.", | |
352 | verb, changes[i].path); | |
353 | logged = true; | |
354 | break; | |
355 | case -EADDRNOTAVAIL: | |
356 | log_error_errno(changes[i].type, "Failed to %s unit, unit %s is transient or generated.", | |
357 | verb, changes[i].path); | |
358 | logged = true; | |
359 | break; | |
d7ceaf72 ZJS |
360 | case -EUCLEAN: |
361 | log_error_errno(changes[i].type, | |
362 | "Failed to %s unit, \"%s\" is not a valid unit name.", | |
363 | verb, changes[i].path); | |
364 | logged = true; | |
365 | break; | |
af3d8113 ZJS |
366 | case -ELOOP: |
367 | log_error_errno(changes[i].type, "Failed to %s unit, refusing to operate on linked unit file %s", | |
368 | verb, changes[i].path); | |
369 | logged = true; | |
370 | break; | |
637d6e5b LP |
371 | |
372 | case -ENOENT: | |
373 | log_error_errno(changes[i].type, "Failed to %s unit, unit %s does not exist.", verb, changes[i].path); | |
374 | logged = true; | |
375 | break; | |
376 | ||
af3d8113 ZJS |
377 | default: |
378 | assert(changes[i].type < 0); | |
379 | log_error_errno(changes[i].type, "Failed to %s unit, file %s: %m.", | |
380 | verb, changes[i].path); | |
381 | logged = true; | |
382 | } | |
383 | } | |
384 | ||
385 | if (r < 0 && !logged) | |
386 | log_error_errno(r, "Failed to %s: %m.", verb); | |
387 | } | |
388 | ||
25ea9277 ZJS |
389 | /** |
390 | * Checks if two paths or symlinks from wd are the same, when root is the root of the filesystem. | |
391 | * wc should be the full path in the host file system. | |
392 | */ | |
393 | static bool chroot_symlinks_same(const char *root, const char *wd, const char *a, const char *b) { | |
394 | assert(path_is_absolute(wd)); | |
395 | ||
396 | /* This will give incorrect results if the paths are relative and go outside | |
397 | * of the chroot. False negatives are possible. */ | |
398 | ||
ae9efab7 ZJS |
399 | if (!root) |
400 | root = "/"; | |
401 | ||
25ea9277 ZJS |
402 | a = strjoina(path_is_absolute(a) ? root : wd, "/", a); |
403 | b = strjoina(path_is_absolute(b) ? root : wd, "/", b); | |
e3f791a2 | 404 | return path_equal_or_files_same(a, b, 0); |
25ea9277 ZJS |
405 | } |
406 | ||
0ec0deaa | 407 | static int create_symlink( |
60bec8e4 | 408 | const LookupPaths *paths, |
0ec0deaa LP |
409 | const char *old_path, |
410 | const char *new_path, | |
411 | bool force, | |
412 | UnitFileChange **changes, | |
da6053d0 | 413 | size_t *n_changes) { |
0ec0deaa | 414 | |
25ea9277 | 415 | _cleanup_free_ char *dest = NULL, *dirname = NULL; |
60bec8e4 | 416 | const char *rp; |
0ec0deaa LP |
417 | int r; |
418 | ||
419 | assert(old_path); | |
420 | assert(new_path); | |
421 | ||
60bec8e4 ZJS |
422 | rp = skip_root(paths, old_path); |
423 | if (rp) | |
424 | old_path = rp; | |
425 | ||
0ec0deaa LP |
426 | /* Actually create a symlink, and remember that we did. Is |
427 | * smart enough to check if there's already a valid symlink in | |
85158303 ZJS |
428 | * place. |
429 | * | |
430 | * Returns 1 if a symlink was created or already exists and points to | |
431 | * the right place, or negative on error. | |
432 | */ | |
0ec0deaa LP |
433 | |
434 | mkdir_parents_label(new_path, 0755); | |
435 | ||
436 | if (symlink(old_path, new_path) >= 0) { | |
437 | unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path); | |
3de15214 | 438 | return 1; |
0ec0deaa LP |
439 | } |
440 | ||
af3d8113 ZJS |
441 | if (errno != EEXIST) { |
442 | unit_file_changes_add(changes, n_changes, -errno, new_path, NULL); | |
0ec0deaa | 443 | return -errno; |
af3d8113 | 444 | } |
0ec0deaa LP |
445 | |
446 | r = readlink_malloc(new_path, &dest); | |
7d782f26 ZJS |
447 | if (r < 0) { |
448 | /* translate EINVAL (non-symlink exists) to EEXIST */ | |
449 | if (r == -EINVAL) | |
450 | r = -EEXIST; | |
451 | ||
452 | unit_file_changes_add(changes, n_changes, r, new_path, NULL); | |
0ec0deaa | 453 | return r; |
7d782f26 | 454 | } |
0ec0deaa | 455 | |
25ea9277 ZJS |
456 | dirname = dirname_malloc(new_path); |
457 | if (!dirname) | |
458 | return -ENOMEM; | |
459 | ||
3e8d06d9 ZJS |
460 | if (chroot_symlinks_same(paths->root_dir, dirname, dest, old_path)) { |
461 | log_debug("Symlink %s → %s already exists", new_path, dest); | |
85158303 | 462 | return 1; |
3e8d06d9 | 463 | } |
0ec0deaa | 464 | |
af3d8113 ZJS |
465 | if (!force) { |
466 | unit_file_changes_add(changes, n_changes, -EEXIST, new_path, dest); | |
0ec0deaa | 467 | return -EEXIST; |
af3d8113 | 468 | } |
0ec0deaa LP |
469 | |
470 | r = symlink_atomic(old_path, new_path); | |
7d782f26 ZJS |
471 | if (r < 0) { |
472 | unit_file_changes_add(changes, n_changes, r, new_path, NULL); | |
0ec0deaa | 473 | return r; |
7d782f26 | 474 | } |
0ec0deaa LP |
475 | |
476 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, new_path, NULL); | |
477 | unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path); | |
478 | ||
3de15214 | 479 | return 1; |
0ec0deaa LP |
480 | } |
481 | ||
83096483 LP |
482 | static int mark_symlink_for_removal( |
483 | Set **remove_symlinks_to, | |
484 | const char *p) { | |
485 | ||
486 | char *n; | |
487 | int r; | |
488 | ||
489 | assert(p); | |
490 | ||
548f6937 | 491 | r = set_ensure_allocated(remove_symlinks_to, &path_hash_ops); |
83096483 LP |
492 | if (r < 0) |
493 | return r; | |
494 | ||
495 | n = strdup(p); | |
496 | if (!n) | |
497 | return -ENOMEM; | |
498 | ||
858d36c1 | 499 | path_simplify(n, false); |
83096483 | 500 | |
ef42202a | 501 | r = set_consume(*remove_symlinks_to, n); |
d25e100b LP |
502 | if (r == -EEXIST) |
503 | return 0; | |
ef42202a | 504 | if (r < 0) |
d25e100b | 505 | return r; |
83096483 | 506 | |
0ec0deaa | 507 | return 1; |
83096483 LP |
508 | } |
509 | ||
510 | static int remove_marked_symlinks_fd( | |
511 | Set *remove_symlinks_to, | |
512 | int fd, | |
513 | const char *path, | |
514 | const char *config_path, | |
401017e0 | 515 | const LookupPaths *lp, |
3b3557c4 | 516 | bool dry_run, |
0ec0deaa | 517 | bool *restart, |
83096483 | 518 | UnitFileChange **changes, |
da6053d0 | 519 | size_t *n_changes) { |
83096483 | 520 | |
7fd1b19b | 521 | _cleanup_closedir_ DIR *d = NULL; |
d25e100b | 522 | struct dirent *de; |
bcafe923 | 523 | int r = 0; |
83096483 LP |
524 | |
525 | assert(remove_symlinks_to); | |
526 | assert(fd >= 0); | |
527 | assert(path); | |
528 | assert(config_path); | |
401017e0 | 529 | assert(lp); |
0ec0deaa | 530 | assert(restart); |
83096483 LP |
531 | |
532 | d = fdopendir(fd); | |
533 | if (!d) { | |
03e334a1 | 534 | safe_close(fd); |
83096483 LP |
535 | return -errno; |
536 | } | |
537 | ||
538 | rewinddir(d); | |
539 | ||
d25e100b | 540 | FOREACH_DIRENT(de, d, return -errno) { |
83096483 LP |
541 | |
542 | dirent_ensure_type(d, de); | |
543 | ||
544 | if (de->d_type == DT_DIR) { | |
7fd1b19b | 545 | _cleanup_free_ char *p = NULL; |
d25e100b | 546 | int nfd, q; |
83096483 LP |
547 | |
548 | nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
549 | if (nfd < 0) { | |
550 | if (errno == ENOENT) | |
551 | continue; | |
552 | ||
553 | if (r == 0) | |
554 | r = -errno; | |
555 | continue; | |
556 | } | |
557 | ||
558 | p = path_make_absolute(de->d_name, path); | |
559 | if (!p) { | |
03e334a1 | 560 | safe_close(nfd); |
d9e5e694 | 561 | return -ENOMEM; |
83096483 LP |
562 | } |
563 | ||
564 | /* This will close nfd, regardless whether it succeeds or not */ | |
3b3557c4 | 565 | q = remove_marked_symlinks_fd(remove_symlinks_to, nfd, p, config_path, lp, dry_run, restart, changes, n_changes); |
bcafe923 | 566 | if (q < 0 && r == 0) |
83096483 LP |
567 | r = q; |
568 | ||
569 | } else if (de->d_type == DT_LNK) { | |
7fd1b19b | 570 | _cleanup_free_ char *p = NULL, *dest = NULL; |
401017e0 | 571 | const char *rp; |
83096483 | 572 | bool found; |
0ec0deaa | 573 | int q; |
83096483 | 574 | |
7410616c | 575 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
bcafe923 LP |
576 | continue; |
577 | ||
83096483 | 578 | p = path_make_absolute(de->d_name, path); |
d9e5e694 ZJS |
579 | if (!p) |
580 | return -ENOMEM; | |
858d36c1 | 581 | path_simplify(p, false); |
83096483 | 582 | |
66a19d85 | 583 | q = chase_symlinks(p, NULL, CHASE_NONEXISTENT, &dest, NULL); |
401017e0 LP |
584 | if (q == -ENOENT) |
585 | continue; | |
83096483 | 586 | if (q < 0) { |
83096483 LP |
587 | if (r == 0) |
588 | r = q; | |
589 | continue; | |
590 | } | |
591 | ||
401017e0 LP |
592 | /* We remove all links pointing to a file or path that is marked, as well as all files sharing |
593 | * the same name as a file that is marked. */ | |
0ec0deaa | 594 | |
596fc263 | 595 | found = set_contains(remove_symlinks_to, dest) || |
0ec0deaa LP |
596 | set_contains(remove_symlinks_to, basename(dest)) || |
597 | set_contains(remove_symlinks_to, de->d_name); | |
83096483 | 598 | |
1dacfd2a LP |
599 | if (!found) |
600 | continue; | |
83096483 | 601 | |
3b3557c4 JS |
602 | if (!dry_run) { |
603 | if (unlinkat(fd, de->d_name, 0) < 0 && errno != ENOENT) { | |
604 | if (r == 0) | |
605 | r = -errno; | |
606 | unit_file_changes_add(changes, n_changes, -errno, p, NULL); | |
607 | continue; | |
608 | } | |
bcafe923 | 609 | |
3b3557c4 JS |
610 | (void) rmdir_parents(p, config_path); |
611 | } | |
83096483 | 612 | |
0ec0deaa | 613 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, p, NULL); |
1dacfd2a | 614 | |
12bf0ae4 ZJS |
615 | /* Now, remember the full path (but with the root prefix removed) of |
616 | * the symlink we just removed, and remove any symlinks to it, too. */ | |
401017e0 LP |
617 | |
618 | rp = skip_root(lp, p); | |
619 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: p); | |
0ec0deaa LP |
620 | if (q < 0) |
621 | return q; | |
3b3557c4 | 622 | if (q > 0 && !dry_run) |
0ec0deaa | 623 | *restart = true; |
83096483 LP |
624 | } |
625 | } | |
626 | ||
83096483 LP |
627 | return r; |
628 | } | |
629 | ||
630 | static int remove_marked_symlinks( | |
631 | Set *remove_symlinks_to, | |
632 | const char *config_path, | |
401017e0 | 633 | const LookupPaths *lp, |
3b3557c4 | 634 | bool dry_run, |
83096483 | 635 | UnitFileChange **changes, |
da6053d0 | 636 | size_t *n_changes) { |
83096483 | 637 | |
da39f6a6 | 638 | _cleanup_close_ int fd = -1; |
0ec0deaa | 639 | bool restart; |
d25e100b | 640 | int r = 0; |
83096483 LP |
641 | |
642 | assert(config_path); | |
401017e0 | 643 | assert(lp); |
83096483 LP |
644 | |
645 | if (set_size(remove_symlinks_to) <= 0) | |
646 | return 0; | |
647 | ||
67852d08 | 648 | fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC); |
83096483 | 649 | if (fd < 0) |
32d9493e | 650 | return errno == ENOENT ? 0 : -errno; |
83096483 LP |
651 | |
652 | do { | |
653 | int q, cfd; | |
0ec0deaa | 654 | restart = false; |
83096483 | 655 | |
ead34950 | 656 | cfd = fcntl(fd, F_DUPFD_CLOEXEC, 3); |
d25e100b LP |
657 | if (cfd < 0) |
658 | return -errno; | |
83096483 LP |
659 | |
660 | /* This takes possession of cfd and closes it */ | |
3b3557c4 | 661 | q = remove_marked_symlinks_fd(remove_symlinks_to, cfd, config_path, config_path, lp, dry_run, &restart, changes, n_changes); |
83096483 LP |
662 | if (r == 0) |
663 | r = q; | |
0ec0deaa | 664 | } while (restart); |
83096483 | 665 | |
83096483 LP |
666 | return r; |
667 | } | |
668 | ||
d5c30911 | 669 | static int is_symlink_with_known_name(const UnitFileInstallInfo *i, const char *name) { |
5cd8ae31 ZJS |
670 | int r; |
671 | ||
672 | if (streq(name, i->name)) | |
673 | return true; | |
674 | ||
675 | if (strv_contains(i->aliases, name)) | |
676 | return true; | |
677 | ||
678 | /* Look for template symlink matching DefaultInstance */ | |
679 | if (i->default_instance && unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE)) { | |
680 | _cleanup_free_ char *s = NULL; | |
681 | ||
682 | r = unit_name_replace_instance(i->name, i->default_instance, &s); | |
683 | if (r < 0) { | |
684 | if (r != -EINVAL) | |
685 | return r; | |
686 | ||
687 | } else if (streq(name, s)) | |
688 | return true; | |
689 | } | |
690 | ||
691 | return false; | |
692 | } | |
693 | ||
83096483 | 694 | static int find_symlinks_fd( |
0ec0deaa | 695 | const char *root_dir, |
26526f98 | 696 | const UnitFileInstallInfo *i, |
d9b4b48f | 697 | bool match_aliases, |
4b37c89f | 698 | bool ignore_same_name, |
83096483 LP |
699 | int fd, |
700 | const char *path, | |
701 | const char *config_path, | |
702 | bool *same_name_link) { | |
703 | ||
7fd1b19b | 704 | _cleanup_closedir_ DIR *d = NULL; |
d25e100b LP |
705 | struct dirent *de; |
706 | int r = 0; | |
83096483 | 707 | |
5cd8ae31 | 708 | assert(i); |
83096483 LP |
709 | assert(fd >= 0); |
710 | assert(path); | |
711 | assert(config_path); | |
712 | assert(same_name_link); | |
713 | ||
714 | d = fdopendir(fd); | |
715 | if (!d) { | |
03e334a1 | 716 | safe_close(fd); |
83096483 LP |
717 | return -errno; |
718 | } | |
719 | ||
d25e100b | 720 | FOREACH_DIRENT(de, d, return -errno) { |
83096483 LP |
721 | |
722 | dirent_ensure_type(d, de); | |
723 | ||
724 | if (de->d_type == DT_DIR) { | |
7fd1b19b | 725 | _cleanup_free_ char *p = NULL; |
d25e100b | 726 | int nfd, q; |
83096483 LP |
727 | |
728 | nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
729 | if (nfd < 0) { | |
730 | if (errno == ENOENT) | |
731 | continue; | |
732 | ||
733 | if (r == 0) | |
734 | r = -errno; | |
735 | continue; | |
736 | } | |
737 | ||
738 | p = path_make_absolute(de->d_name, path); | |
739 | if (!p) { | |
03e334a1 | 740 | safe_close(nfd); |
ea55addc | 741 | return -ENOMEM; |
83096483 LP |
742 | } |
743 | ||
744 | /* This will close nfd, regardless whether it succeeds or not */ | |
4b37c89f | 745 | q = find_symlinks_fd(root_dir, i, match_aliases, ignore_same_name, nfd, |
5cd8ae31 | 746 | p, config_path, same_name_link); |
ea55addc ZJS |
747 | if (q > 0) |
748 | return 1; | |
83096483 LP |
749 | if (r == 0) |
750 | r = q; | |
751 | ||
752 | } else if (de->d_type == DT_LNK) { | |
7fd1b19b | 753 | _cleanup_free_ char *p = NULL, *dest = NULL; |
4b37c89f | 754 | bool found_path = false, found_dest, b = false; |
83096483 LP |
755 | int q; |
756 | ||
757 | /* Acquire symlink name */ | |
758 | p = path_make_absolute(de->d_name, path); | |
ea55addc ZJS |
759 | if (!p) |
760 | return -ENOMEM; | |
83096483 LP |
761 | |
762 | /* Acquire symlink destination */ | |
0ec0deaa | 763 | q = readlink_malloc(p, &dest); |
d25e100b LP |
764 | if (q == -ENOENT) |
765 | continue; | |
83096483 | 766 | if (q < 0) { |
83096483 LP |
767 | if (r == 0) |
768 | r = q; | |
769 | continue; | |
770 | } | |
771 | ||
0ec0deaa LP |
772 | /* Make absolute */ |
773 | if (!path_is_absolute(dest)) { | |
774 | char *x; | |
775 | ||
c6134d3e | 776 | x = path_join(root_dir, dest); |
0ec0deaa LP |
777 | if (!x) |
778 | return -ENOMEM; | |
779 | ||
2eded6cb | 780 | free_and_replace(dest, x); |
0ec0deaa LP |
781 | } |
782 | ||
2eded6cb | 783 | assert(unit_name_is_valid(i->name, UNIT_NAME_ANY)); |
4b37c89f ZJS |
784 | if (!ignore_same_name) |
785 | /* Check if the symlink itself matches what we are looking for. | |
786 | * | |
787 | * If ignore_same_name is specified, we are in one of the directories which | |
788 | * have lower priority than the unit file, and even if a file or symlink with | |
789 | * this name was found, we should ignore it. */ | |
790 | found_path = streq(de->d_name, i->name); | |
83096483 | 791 | |
2eded6cb ZJS |
792 | /* Check if what the symlink points to matches what we are looking for */ |
793 | found_dest = streq(basename(dest), i->name); | |
83096483 | 794 | |
83096483 | 795 | if (found_path && found_dest) { |
7fd1b19b | 796 | _cleanup_free_ char *t = NULL; |
83096483 LP |
797 | |
798 | /* Filter out same name links in the main | |
799 | * config path */ | |
5cd8ae31 | 800 | t = path_make_absolute(i->name, config_path); |
ea55addc ZJS |
801 | if (!t) |
802 | return -ENOMEM; | |
83096483 LP |
803 | |
804 | b = path_equal(t, p); | |
83096483 LP |
805 | } |
806 | ||
83096483 LP |
807 | if (b) |
808 | *same_name_link = true; | |
5cd8ae31 | 809 | else if (found_path || found_dest) { |
d9b4b48f ZJS |
810 | if (!match_aliases) |
811 | return 1; | |
812 | ||
5cd8ae31 ZJS |
813 | /* Check if symlink name is in the set of names used by [Install] */ |
814 | q = is_symlink_with_known_name(i, de->d_name); | |
5cd8ae31 ZJS |
815 | if (q < 0) |
816 | return q; | |
817 | if (q > 0) | |
818 | return 1; | |
819 | } | |
83096483 LP |
820 | } |
821 | } | |
d25e100b LP |
822 | |
823 | return r; | |
83096483 LP |
824 | } |
825 | ||
826 | static int find_symlinks( | |
0ec0deaa | 827 | const char *root_dir, |
26526f98 | 828 | const UnitFileInstallInfo *i, |
d9b4b48f | 829 | bool match_name, |
4b37c89f | 830 | bool ignore_same_name, |
83096483 LP |
831 | const char *config_path, |
832 | bool *same_name_link) { | |
833 | ||
834 | int fd; | |
835 | ||
5cd8ae31 | 836 | assert(i); |
83096483 LP |
837 | assert(config_path); |
838 | assert(same_name_link); | |
839 | ||
1cd1dab9 | 840 | fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC); |
d5891fda | 841 | if (fd < 0) { |
a1feacf7 | 842 | if (IN_SET(errno, ENOENT, ENOTDIR, EACCES)) |
d5891fda | 843 | return 0; |
83096483 | 844 | return -errno; |
d5891fda | 845 | } |
83096483 LP |
846 | |
847 | /* This takes possession of fd and closes it */ | |
4b37c89f | 848 | return find_symlinks_fd(root_dir, i, match_name, ignore_same_name, fd, |
5cd8ae31 | 849 | config_path, config_path, same_name_link); |
83096483 LP |
850 | } |
851 | ||
852 | static int find_symlinks_in_scope( | |
d2561cfd | 853 | UnitFileScope scope, |
e1c5c2b0 | 854 | const LookupPaths *paths, |
26526f98 | 855 | const UnitFileInstallInfo *i, |
d9b4b48f | 856 | bool match_name, |
83096483 LP |
857 | UnitFileState *state) { |
858 | ||
dfead90d LP |
859 | bool same_name_link_runtime = false, same_name_link_config = false; |
860 | bool enabled_in_runtime = false, enabled_at_all = false; | |
4b37c89f | 861 | bool ignore_same_name = false; |
dfead90d | 862 | char **p; |
0ec0deaa | 863 | int r; |
83096483 | 864 | |
e1c5c2b0 | 865 | assert(paths); |
5cd8ae31 | 866 | assert(i); |
83096483 | 867 | |
4b37c89f ZJS |
868 | /* As we iterate over the list of search paths in paths->search_path, we may encounter "same name" |
869 | * symlinks. The ones which are "below" (i.e. have lower priority) than the unit file itself are | |
5238e957 | 870 | * effectively masked, so we should ignore them. */ |
4b37c89f | 871 | |
dfead90d LP |
872 | STRV_FOREACH(p, paths->search_path) { |
873 | bool same_name_link = false; | |
874 | ||
4b37c89f | 875 | r = find_symlinks(paths->root_dir, i, match_name, ignore_same_name, *p, &same_name_link); |
dfead90d LP |
876 | if (r < 0) |
877 | return r; | |
878 | if (r > 0) { | |
879 | /* We found symlinks in this dir? Yay! Let's see where precisely it is enabled. */ | |
880 | ||
bb2682bc | 881 | if (path_equal_ptr(*p, paths->persistent_config)) { |
dfead90d LP |
882 | /* This is the best outcome, let's return it immediately. */ |
883 | *state = UNIT_FILE_ENABLED; | |
884 | return 1; | |
885 | } | |
886 | ||
bb2682bc | 887 | /* look for global enablement of user units */ |
d2561cfd ZJS |
888 | if (scope == UNIT_FILE_USER && path_is_user_config_dir(*p)) { |
889 | *state = UNIT_FILE_ENABLED; | |
890 | return 1; | |
891 | } | |
892 | ||
dfead90d LP |
893 | r = path_is_runtime(paths, *p, false); |
894 | if (r < 0) | |
895 | return r; | |
896 | if (r > 0) | |
897 | enabled_in_runtime = true; | |
898 | else | |
899 | enabled_at_all = true; | |
900 | ||
901 | } else if (same_name_link) { | |
bb2682bc | 902 | if (path_equal_ptr(*p, paths->persistent_config)) |
dfead90d LP |
903 | same_name_link_config = true; |
904 | else { | |
905 | r = path_is_runtime(paths, *p, false); | |
906 | if (r < 0) | |
907 | return r; | |
908 | if (r > 0) | |
909 | same_name_link_runtime = true; | |
910 | } | |
911 | } | |
4b37c89f ZJS |
912 | |
913 | /* Check if next iteration will be "below" the unit file (either a regular file | |
914 | * or a symlink), and hence should be ignored */ | |
915 | if (!ignore_same_name && path_startswith(i->path, *p)) | |
916 | ignore_same_name = true; | |
83096483 LP |
917 | } |
918 | ||
dfead90d | 919 | if (enabled_in_runtime) { |
0ec0deaa | 920 | *state = UNIT_FILE_ENABLED_RUNTIME; |
dfead90d LP |
921 | return 1; |
922 | } | |
923 | ||
924 | /* Here's a special rule: if the unit we are looking for is an instance, and it symlinked in the search path | |
925 | * outside of runtime and configuration directory, then we consider it statically enabled. Note we do that only | |
926 | * for instance, not for regular names, as those are merely aliases, while instances explicitly instantiate | |
927 | * something, and hence are a much stronger concept. */ | |
5cd8ae31 | 928 | if (enabled_at_all && unit_name_is_valid(i->name, UNIT_NAME_INSTANCE)) { |
dfead90d LP |
929 | *state = UNIT_FILE_STATIC; |
930 | return 1; | |
83096483 LP |
931 | } |
932 | ||
933 | /* Hmm, we didn't find it, but maybe we found the same name | |
934 | * link? */ | |
dfead90d | 935 | if (same_name_link_config) { |
0ec0deaa LP |
936 | *state = UNIT_FILE_LINKED; |
937 | return 1; | |
938 | } | |
83096483 LP |
939 | if (same_name_link_runtime) { |
940 | *state = UNIT_FILE_LINKED_RUNTIME; | |
941 | return 1; | |
83096483 LP |
942 | } |
943 | ||
944 | return 0; | |
945 | } | |
946 | ||
0ec0deaa | 947 | static void install_info_free(UnitFileInstallInfo *i) { |
83096483 | 948 | |
0ec0deaa LP |
949 | if (!i) |
950 | return; | |
83096483 | 951 | |
0ec0deaa LP |
952 | free(i->name); |
953 | free(i->path); | |
954 | strv_free(i->aliases); | |
955 | strv_free(i->wanted_by); | |
956 | strv_free(i->required_by); | |
957 | strv_free(i->also); | |
958 | free(i->default_instance); | |
959 | free(i->symlink_target); | |
960 | free(i); | |
961 | } | |
83096483 | 962 | |
0ec0deaa LP |
963 | static void install_context_done(InstallContext *c) { |
964 | assert(c); | |
83096483 | 965 | |
224b0e7a ZJS |
966 | c->will_process = ordered_hashmap_free_with_destructor(c->will_process, install_info_free); |
967 | c->have_processed = ordered_hashmap_free_with_destructor(c->have_processed, install_info_free); | |
0ec0deaa | 968 | } |
83096483 | 969 | |
0ec0deaa LP |
970 | static UnitFileInstallInfo *install_info_find(InstallContext *c, const char *name) { |
971 | UnitFileInstallInfo *i; | |
83096483 | 972 | |
0ec0deaa LP |
973 | i = ordered_hashmap_get(c->have_processed, name); |
974 | if (i) | |
975 | return i; | |
83096483 | 976 | |
0ec0deaa | 977 | return ordered_hashmap_get(c->will_process, name); |
83096483 LP |
978 | } |
979 | ||
af3d8113 | 980 | static int install_info_may_process( |
26526f98 | 981 | const UnitFileInstallInfo *i, |
af3d8113 ZJS |
982 | const LookupPaths *paths, |
983 | UnitFileChange **changes, | |
da6053d0 | 984 | size_t *n_changes) { |
76adb5b8 LP |
985 | assert(i); |
986 | assert(paths); | |
987 | ||
047d91f9 ZJS |
988 | /* Checks whether the loaded unit file is one we should process, or is masked, |
989 | * transient or generated and thus not subject to enable/disable operations. */ | |
76adb5b8 | 990 | |
af3d8113 ZJS |
991 | if (i->type == UNIT_FILE_TYPE_MASKED) { |
992 | unit_file_changes_add(changes, n_changes, -ERFKILL, i->path, NULL); | |
76ec966f | 993 | return -ERFKILL; |
af3d8113 ZJS |
994 | } |
995 | if (path_is_generator(paths, i->path) || | |
996 | path_is_transient(paths, i->path)) { | |
997 | unit_file_changes_add(changes, n_changes, -EADDRNOTAVAIL, i->path, NULL); | |
76adb5b8 | 998 | return -EADDRNOTAVAIL; |
af3d8113 | 999 | } |
76adb5b8 LP |
1000 | |
1001 | return 0; | |
1002 | } | |
1003 | ||
ff56349d ZJS |
1004 | /** |
1005 | * Adds a new UnitFileInstallInfo entry under name in the InstallContext.will_process | |
1006 | * hashmap, or retrieves the existing one if already present. | |
19539807 ZJS |
1007 | * |
1008 | * Returns negative on error, 0 if the unit was already known, 1 otherwise. | |
ff56349d | 1009 | */ |
83096483 LP |
1010 | static int install_info_add( |
1011 | InstallContext *c, | |
1012 | const char *name, | |
0ec0deaa | 1013 | const char *path, |
19539807 | 1014 | bool auxiliary, |
0ec0deaa LP |
1015 | UnitFileInstallInfo **ret) { |
1016 | ||
cab6235f | 1017 | UnitFileInstallInfo *i = NULL; |
83096483 LP |
1018 | int r; |
1019 | ||
1020 | assert(c); | |
1021 | assert(name || path); | |
1022 | ||
1023 | if (!name) | |
2b6bf07d | 1024 | name = basename(path); |
83096483 | 1025 | |
7410616c | 1026 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
83096483 LP |
1027 | return -EINVAL; |
1028 | ||
0ec0deaa LP |
1029 | i = install_info_find(c, name); |
1030 | if (i) { | |
19539807 ZJS |
1031 | i->auxiliary = i->auxiliary && auxiliary; |
1032 | ||
0ec0deaa LP |
1033 | if (ret) |
1034 | *ret = i; | |
83096483 | 1035 | return 0; |
0ec0deaa | 1036 | } |
83096483 | 1037 | |
0ec0deaa | 1038 | r = ordered_hashmap_ensure_allocated(&c->will_process, &string_hash_ops); |
83096483 LP |
1039 | if (r < 0) |
1040 | return r; | |
1041 | ||
d23aeead | 1042 | i = new(UnitFileInstallInfo, 1); |
83096483 LP |
1043 | if (!i) |
1044 | return -ENOMEM; | |
d23aeead LP |
1045 | |
1046 | *i = (UnitFileInstallInfo) { | |
1047 | .type = _UNIT_FILE_TYPE_INVALID, | |
1048 | .auxiliary = auxiliary, | |
1049 | }; | |
83096483 LP |
1050 | |
1051 | i->name = strdup(name); | |
1052 | if (!i->name) { | |
1053 | r = -ENOMEM; | |
1054 | goto fail; | |
1055 | } | |
1056 | ||
1057 | if (path) { | |
1058 | i->path = strdup(path); | |
1059 | if (!i->path) { | |
1060 | r = -ENOMEM; | |
1061 | goto fail; | |
1062 | } | |
1063 | } | |
1064 | ||
0ec0deaa | 1065 | r = ordered_hashmap_put(c->will_process, i->name, i); |
83096483 LP |
1066 | if (r < 0) |
1067 | goto fail; | |
1068 | ||
0ec0deaa LP |
1069 | if (ret) |
1070 | *ret = i; | |
1071 | ||
19539807 | 1072 | return 1; |
83096483 LP |
1073 | |
1074 | fail: | |
d25e100b | 1075 | install_info_free(i); |
83096483 LP |
1076 | return r; |
1077 | } | |
1078 | ||
a7724589 ZJS |
1079 | static int config_parse_alias( |
1080 | const char *unit, | |
1081 | const char *filename, | |
1082 | unsigned line, | |
1083 | const char *section, | |
1084 | unsigned section_line, | |
1085 | const char *lvalue, | |
1086 | int ltype, | |
1087 | const char *rvalue, | |
1088 | void *data, | |
1089 | void *userdata) { | |
1090 | ||
a7724589 ZJS |
1091 | UnitType type; |
1092 | ||
142468d8 | 1093 | assert(unit); |
a7724589 ZJS |
1094 | assert(filename); |
1095 | assert(lvalue); | |
1096 | assert(rvalue); | |
1097 | ||
142468d8 | 1098 | type = unit_name_to_type(unit); |
a7724589 ZJS |
1099 | if (!unit_type_may_alias(type)) |
1100 | return log_syntax(unit, LOG_WARNING, filename, line, 0, | |
3b8769bd | 1101 | "Alias= is not allowed for %s units, ignoring.", |
a7724589 ZJS |
1102 | unit_type_to_string(type)); |
1103 | ||
1104 | return config_parse_strv(unit, filename, line, section, section_line, | |
1105 | lvalue, ltype, rvalue, data, userdata); | |
1106 | } | |
1107 | ||
d54c4993 LP |
1108 | static int config_parse_also( |
1109 | const char *unit, | |
1110 | const char *filename, | |
1111 | unsigned line, | |
1112 | const char *section, | |
1113 | unsigned section_line, | |
1114 | const char *lvalue, | |
1115 | int ltype, | |
1116 | const char *rvalue, | |
1117 | void *data, | |
1118 | void *userdata) { | |
83096483 | 1119 | |
972f3176 | 1120 | UnitFileInstallInfo *info = userdata; |
0ec0deaa LP |
1121 | InstallContext *c = data; |
1122 | int r; | |
83096483 | 1123 | |
142468d8 | 1124 | assert(unit); |
83096483 LP |
1125 | assert(filename); |
1126 | assert(lvalue); | |
1127 | assert(rvalue); | |
1128 | ||
0ec0deaa | 1129 | for (;;) { |
a6612e65 | 1130 | _cleanup_free_ char *word = NULL, *printed = NULL; |
03da6513 | 1131 | |
0ec0deaa LP |
1132 | r = extract_first_word(&rvalue, &word, NULL, 0); |
1133 | if (r < 0) | |
1134 | return r; | |
03da6513 SS |
1135 | if (r == 0) |
1136 | break; | |
83096483 | 1137 | |
a6612e65 | 1138 | r = install_full_printf(info, word, &printed); |
d9e5e694 | 1139 | if (r < 0) |
83096483 | 1140 | return r; |
aedd4012 | 1141 | |
972f3176 | 1142 | r = install_info_add(c, printed, NULL, true, NULL); |
d9e5e694 | 1143 | if (r < 0) |
83096483 | 1144 | return r; |
aedd4012 | 1145 | |
a6612e65 | 1146 | r = strv_push(&info->also, printed); |
aedd4012 JS |
1147 | if (r < 0) |
1148 | return r; | |
0ec0deaa | 1149 | |
a6612e65 | 1150 | printed = NULL; |
83096483 LP |
1151 | } |
1152 | ||
1153 | return 0; | |
1154 | } | |
1155 | ||
d54c4993 LP |
1156 | static int config_parse_default_instance( |
1157 | const char *unit, | |
1158 | const char *filename, | |
1159 | unsigned line, | |
1160 | const char *section, | |
1161 | unsigned section_line, | |
1162 | const char *lvalue, | |
1163 | int ltype, | |
1164 | const char *rvalue, | |
1165 | void *data, | |
1166 | void *userdata) { | |
1167 | ||
cab6235f | 1168 | UnitFileInstallInfo *i = data; |
d7604756 | 1169 | _cleanup_free_ char *printed = NULL; |
d54c4993 LP |
1170 | int r; |
1171 | ||
142468d8 | 1172 | assert(unit); |
d54c4993 LP |
1173 | assert(filename); |
1174 | assert(lvalue); | |
1175 | assert(rvalue); | |
1176 | ||
142468d8 | 1177 | if (unit_name_is_valid(unit, UNIT_NAME_INSTANCE)) |
6597fa61 ZJS |
1178 | /* When enabling an instance, we might be using a template unit file, |
1179 | * but we should ignore DefaultInstance silently. */ | |
1180 | return 0; | |
142468d8 | 1181 | if (!unit_name_is_valid(unit, UNIT_NAME_TEMPLATE)) |
6597fa61 | 1182 | return log_syntax(unit, LOG_WARNING, filename, line, 0, |
10d67460 | 1183 | "DefaultInstance= only makes sense for template units, ignoring."); |
6597fa61 | 1184 | |
d54c4993 LP |
1185 | r = install_full_printf(i, rvalue, &printed); |
1186 | if (r < 0) | |
1187 | return r; | |
1188 | ||
b5395600 JR |
1189 | if (isempty(printed)) { |
1190 | i->default_instance = mfree(i->default_instance); | |
1191 | return 0; | |
1192 | } | |
1193 | ||
d7604756 | 1194 | if (!unit_instance_is_valid(printed)) |
e5171296 ZJS |
1195 | return log_syntax(unit, LOG_WARNING, filename, line, SYNTHETIC_ERRNO(EINVAL), |
1196 | "Invalid DefaultInstance= value \"%s\".", printed); | |
d54c4993 | 1197 | |
3b319885 | 1198 | return free_and_replace(i->default_instance, printed); |
d54c4993 LP |
1199 | } |
1200 | ||
83096483 LP |
1201 | static int unit_file_load( |
1202 | InstallContext *c, | |
cab6235f | 1203 | UnitFileInstallInfo *info, |
83096483 | 1204 | const char *path, |
d04a9386 | 1205 | const char *root_dir, |
0ec0deaa | 1206 | SearchFlags flags) { |
83096483 | 1207 | |
f975e971 | 1208 | const ConfigTableItem items[] = { |
a7724589 | 1209 | { "Install", "Alias", config_parse_alias, 0, &info->aliases }, |
d54c4993 LP |
1210 | { "Install", "WantedBy", config_parse_strv, 0, &info->wanted_by }, |
1211 | { "Install", "RequiredBy", config_parse_strv, 0, &info->required_by }, | |
1212 | { "Install", "DefaultInstance", config_parse_default_instance, 0, info }, | |
1213 | { "Install", "Also", config_parse_also, 0, c }, | |
d54c4993 | 1214 | {} |
83096483 LP |
1215 | }; |
1216 | ||
133e5b36 | 1217 | UnitType type; |
7fd1b19b | 1218 | _cleanup_fclose_ FILE *f = NULL; |
0ec0deaa LP |
1219 | _cleanup_close_ int fd = -1; |
1220 | struct stat st; | |
1221 | int r; | |
83096483 | 1222 | |
83096483 LP |
1223 | assert(info); |
1224 | assert(path); | |
1225 | ||
d04a9386 LP |
1226 | if (!(flags & SEARCH_DROPIN)) { |
1227 | /* Loading or checking for the main unit file… */ | |
133e5b36 | 1228 | |
d04a9386 LP |
1229 | type = unit_name_to_type(info->name); |
1230 | if (type < 0) | |
1231 | return -EINVAL; | |
baaa35ad ZJS |
1232 | if (unit_name_is_valid(info->name, UNIT_NAME_TEMPLATE|UNIT_NAME_INSTANCE) && !unit_type_may_template(type)) |
1233 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1234 | "Unit type %s cannot be templated.", unit_type_to_string(type)); | |
d04a9386 LP |
1235 | |
1236 | if (!(flags & SEARCH_LOAD)) { | |
1237 | r = lstat(path, &st); | |
1238 | if (r < 0) | |
1239 | return -errno; | |
1240 | ||
1241 | if (null_or_empty(&st)) | |
1242 | info->type = UNIT_FILE_TYPE_MASKED; | |
1243 | else if (S_ISREG(st.st_mode)) | |
1244 | info->type = UNIT_FILE_TYPE_REGULAR; | |
1245 | else if (S_ISLNK(st.st_mode)) | |
1246 | return -ELOOP; | |
1247 | else if (S_ISDIR(st.st_mode)) | |
1248 | return -EISDIR; | |
1249 | else | |
1250 | return -ENOTTY; | |
1251 | ||
1252 | return 0; | |
1253 | } | |
1254 | ||
1255 | fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW); | |
1256 | if (fd < 0) | |
d25e100b | 1257 | return -errno; |
d04a9386 LP |
1258 | } else { |
1259 | /* Operating on a drop-in file. If we aren't supposed to load the unit file drop-ins don't matter, let's hence shortcut this. */ | |
d25e100b | 1260 | |
d04a9386 LP |
1261 | if (!(flags & SEARCH_LOAD)) |
1262 | return 0; | |
0ec0deaa | 1263 | |
d04a9386 LP |
1264 | fd = chase_symlinks_and_open(path, root_dir, 0, O_RDONLY|O_CLOEXEC|O_NOCTTY, NULL); |
1265 | if (fd < 0) | |
1266 | return fd; | |
e94937df LN |
1267 | } |
1268 | ||
0ec0deaa LP |
1269 | if (fstat(fd, &st) < 0) |
1270 | return -errno; | |
d04a9386 | 1271 | |
0ec0deaa | 1272 | if (null_or_empty(&st)) { |
d04a9386 LP |
1273 | if ((flags & SEARCH_DROPIN) == 0) |
1274 | info->type = UNIT_FILE_TYPE_MASKED; | |
1275 | ||
0ec0deaa LP |
1276 | return 0; |
1277 | } | |
3cc44114 LP |
1278 | |
1279 | r = stat_verify_regular(&st); | |
1280 | if (r < 0) | |
1281 | return r; | |
83096483 | 1282 | |
4fa744a3 | 1283 | f = take_fdopen(&fd, "r"); |
0ec0deaa LP |
1284 | if (!f) |
1285 | return -errno; | |
83096483 | 1286 | |
d04a9386 LP |
1287 | /* c is only needed if we actually load the file (it's referenced from items[] btw, in case you wonder.) */ |
1288 | assert(c); | |
1289 | ||
142468d8 | 1290 | r = config_parse(info->name, path, f, |
f4331d0d ZJS |
1291 | "Install\0" |
1292 | "-Unit\0" | |
1293 | "-Automount\0" | |
1294 | "-Device\0" | |
1295 | "-Mount\0" | |
1296 | "-Path\0" | |
1297 | "-Scope\0" | |
1298 | "-Service\0" | |
1299 | "-Slice\0" | |
1300 | "-Socket\0" | |
1301 | "-Swap\0" | |
1302 | "-Target\0" | |
1303 | "-Timer\0", | |
36f822c4 | 1304 | config_item_table_lookup, items, |
f4331d0d | 1305 | CONFIG_PARSE_ALLOW_INCLUDE, info); |
83096483 | 1306 | if (r < 0) |
59108fbe | 1307 | return log_debug_errno(r, "Failed to parse %s: %m", info->name); |
83096483 | 1308 | |
d04a9386 LP |
1309 | if ((flags & SEARCH_DROPIN) == 0) |
1310 | info->type = UNIT_FILE_TYPE_REGULAR; | |
aedd4012 | 1311 | |
78d54bd4 | 1312 | return |
693eb9a2 LP |
1313 | (int) strv_length(info->aliases) + |
1314 | (int) strv_length(info->wanted_by) + | |
1315 | (int) strv_length(info->required_by); | |
83096483 LP |
1316 | } |
1317 | ||
0ec0deaa LP |
1318 | static int unit_file_load_or_readlink( |
1319 | InstallContext *c, | |
1320 | UnitFileInstallInfo *info, | |
1321 | const char *path, | |
1322 | const char *root_dir, | |
1323 | SearchFlags flags) { | |
1324 | ||
401017e0 | 1325 | _cleanup_free_ char *target = NULL; |
0ec0deaa LP |
1326 | int r; |
1327 | ||
d04a9386 LP |
1328 | r = unit_file_load(c, info, path, root_dir, flags); |
1329 | if (r != -ELOOP || (flags & SEARCH_DROPIN)) | |
0ec0deaa LP |
1330 | return r; |
1331 | ||
1332 | /* This is a symlink, let's read it. */ | |
1333 | ||
401017e0 | 1334 | r = readlink_malloc(path, &target); |
0ec0deaa LP |
1335 | if (r < 0) |
1336 | return r; | |
1337 | ||
401017e0 | 1338 | if (path_equal(target, "/dev/null")) |
0ec0deaa LP |
1339 | info->type = UNIT_FILE_TYPE_MASKED; |
1340 | else { | |
1341 | const char *bn; | |
1342 | UnitType a, b; | |
1343 | ||
401017e0 | 1344 | bn = basename(target); |
0ec0deaa LP |
1345 | |
1346 | if (unit_name_is_valid(info->name, UNIT_NAME_PLAIN)) { | |
1347 | ||
1348 | if (!unit_name_is_valid(bn, UNIT_NAME_PLAIN)) | |
1349 | return -EINVAL; | |
1350 | ||
1351 | } else if (unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { | |
1352 | ||
1353 | if (!unit_name_is_valid(bn, UNIT_NAME_INSTANCE|UNIT_NAME_TEMPLATE)) | |
1354 | return -EINVAL; | |
1355 | ||
1356 | } else if (unit_name_is_valid(info->name, UNIT_NAME_TEMPLATE)) { | |
1357 | ||
1358 | if (!unit_name_is_valid(bn, UNIT_NAME_TEMPLATE)) | |
1359 | return -EINVAL; | |
1360 | } else | |
1361 | return -EINVAL; | |
1362 | ||
1363 | /* Enforce that the symlink destination does not | |
1364 | * change the unit file type. */ | |
1365 | ||
1366 | a = unit_name_to_type(info->name); | |
1367 | b = unit_name_to_type(bn); | |
1368 | if (a < 0 || b < 0 || a != b) | |
1369 | return -EINVAL; | |
1370 | ||
401017e0 LP |
1371 | if (path_is_absolute(target)) |
1372 | /* This is an absolute path, prefix the root so that we always deal with fully qualified paths */ | |
c6134d3e | 1373 | info->symlink_target = path_join(root_dir, target); |
401017e0 LP |
1374 | else |
1375 | /* This is a relative path, take it relative to the dir the symlink is located in. */ | |
1376 | info->symlink_target = file_in_same_dir(path, target); | |
1377 | if (!info->symlink_target) | |
1378 | return -ENOMEM; | |
1379 | ||
0ec0deaa | 1380 | info->type = UNIT_FILE_TYPE_SYMLINK; |
0ec0deaa LP |
1381 | } |
1382 | ||
1383 | return 0; | |
1384 | } | |
1385 | ||
83096483 LP |
1386 | static int unit_file_search( |
1387 | InstallContext *c, | |
cab6235f | 1388 | UnitFileInstallInfo *info, |
a8ffe6fb | 1389 | const LookupPaths *paths, |
0ec0deaa | 1390 | SearchFlags flags) { |
83096483 | 1391 | |
d04a9386 LP |
1392 | const char *dropin_dir_name = NULL, *dropin_template_dir_name = NULL; |
1393 | _cleanup_strv_free_ char **dirs = NULL, **files = NULL; | |
64f9280e | 1394 | _cleanup_free_ char *template = NULL; |
142468d8 | 1395 | bool found_unit = false; |
d04a9386 LP |
1396 | int r, result; |
1397 | char **p; | |
83096483 | 1398 | |
83096483 LP |
1399 | assert(info); |
1400 | assert(paths); | |
1401 | ||
0ec0deaa LP |
1402 | /* Was this unit already loaded? */ |
1403 | if (info->type != _UNIT_FILE_TYPE_INVALID) | |
1404 | return 0; | |
1405 | ||
278fa575 | 1406 | if (info->path) |
e4bb56c7 | 1407 | return unit_file_load_or_readlink(c, info, info->path, paths->root_dir, flags); |
83096483 LP |
1408 | |
1409 | assert(info->name); | |
1410 | ||
142468d8 JL |
1411 | if (unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { |
1412 | r = unit_name_template(info->name, &template); | |
1413 | if (r < 0) | |
1414 | return r; | |
1415 | } | |
1416 | ||
a3c4eb07 | 1417 | STRV_FOREACH(p, paths->search_path) { |
e50bd775 | 1418 | _cleanup_free_ char *path = NULL; |
83096483 | 1419 | |
657ee2d8 | 1420 | path = path_join(*p, info->name); |
83096483 LP |
1421 | if (!path) |
1422 | return -ENOMEM; | |
1423 | ||
e4bb56c7 | 1424 | r = unit_file_load_or_readlink(c, info, path, paths->root_dir, flags); |
0155928c | 1425 | if (r >= 0) { |
ae2a15bc | 1426 | info->path = TAKE_PTR(path); |
142468d8 JL |
1427 | result = r; |
1428 | found_unit = true; | |
1429 | break; | |
a1feacf7 | 1430 | } else if (!IN_SET(r, -ENOENT, -ENOTDIR, -EACCES)) |
0155928c | 1431 | return r; |
e50bd775 | 1432 | } |
62b00233 | 1433 | |
142468d8 JL |
1434 | if (!found_unit && template) { |
1435 | ||
e50bd775 LP |
1436 | /* Unit file doesn't exist, however instance |
1437 | * enablement was requested. We will check if it is | |
1438 | * possible to load template unit file. */ | |
29283ea4 | 1439 | |
a3c4eb07 | 1440 | STRV_FOREACH(p, paths->search_path) { |
e50bd775 LP |
1441 | _cleanup_free_ char *path = NULL; |
1442 | ||
657ee2d8 | 1443 | path = path_join(*p, template); |
62b00233 ZJS |
1444 | if (!path) |
1445 | return -ENOMEM; | |
29283ea4 | 1446 | |
e4bb56c7 | 1447 | r = unit_file_load_or_readlink(c, info, path, paths->root_dir, flags); |
0155928c | 1448 | if (r >= 0) { |
ae2a15bc | 1449 | info->path = TAKE_PTR(path); |
142468d8 JL |
1450 | result = r; |
1451 | found_unit = true; | |
1452 | break; | |
a1feacf7 | 1453 | } else if (!IN_SET(r, -ENOENT, -ENOTDIR, -EACCES)) |
0155928c | 1454 | return r; |
29283ea4 | 1455 | } |
83096483 LP |
1456 | } |
1457 | ||
baaa35ad ZJS |
1458 | if (!found_unit) |
1459 | return log_debug_errno(SYNTHETIC_ERRNO(ENOENT), | |
1460 | "Cannot find unit %s%s%s.", | |
1461 | info->name, template ? " or " : "", strempty(template)); | |
142468d8 | 1462 | |
9639b175 FB |
1463 | if (info->type == UNIT_FILE_TYPE_MASKED) |
1464 | return result; | |
1465 | ||
142468d8 JL |
1466 | /* Search for drop-in directories */ |
1467 | ||
1468 | dropin_dir_name = strjoina(info->name, ".d"); | |
1469 | STRV_FOREACH(p, paths->search_path) { | |
1470 | char *path; | |
1471 | ||
62a85ee0 | 1472 | path = path_join(*p, dropin_dir_name); |
142468d8 JL |
1473 | if (!path) |
1474 | return -ENOMEM; | |
1475 | ||
1476 | r = strv_consume(&dirs, path); | |
1477 | if (r < 0) | |
1478 | return r; | |
1479 | } | |
1480 | ||
1481 | if (template) { | |
1482 | dropin_template_dir_name = strjoina(template, ".d"); | |
1483 | STRV_FOREACH(p, paths->search_path) { | |
1484 | char *path; | |
1485 | ||
62a85ee0 | 1486 | path = path_join(*p, dropin_template_dir_name); |
142468d8 JL |
1487 | if (!path) |
1488 | return -ENOMEM; | |
1489 | ||
1490 | r = strv_consume(&dirs, path); | |
1491 | if (r < 0) | |
1492 | return r; | |
1493 | } | |
1494 | } | |
1495 | ||
1496 | /* Load drop-in conf files */ | |
1497 | ||
1498 | r = conf_files_list_strv(&files, ".conf", NULL, 0, (const char**) dirs); | |
1499 | if (r < 0) | |
1500 | return log_debug_errno(r, "Failed to get list of conf files: %m"); | |
1501 | ||
1502 | STRV_FOREACH(p, files) { | |
d04a9386 | 1503 | r = unit_file_load_or_readlink(c, info, *p, paths->root_dir, flags | SEARCH_DROPIN); |
142468d8 JL |
1504 | if (r < 0) |
1505 | return log_debug_errno(r, "Failed to load conf file %s: %m", *p); | |
1506 | } | |
1507 | ||
1508 | return result; | |
83096483 LP |
1509 | } |
1510 | ||
0ec0deaa LP |
1511 | static int install_info_follow( |
1512 | InstallContext *c, | |
1513 | UnitFileInstallInfo *i, | |
83096483 | 1514 | const char *root_dir, |
9f6cbcf5 LP |
1515 | SearchFlags flags, |
1516 | bool ignore_different_name) { | |
0ec0deaa LP |
1517 | |
1518 | assert(c); | |
1519 | assert(i); | |
1520 | ||
1521 | if (i->type != UNIT_FILE_TYPE_SYMLINK) | |
1522 | return -EINVAL; | |
1523 | if (!i->symlink_target) | |
1524 | return -EINVAL; | |
1525 | ||
1526 | /* If the basename doesn't match, the caller should add a | |
1527 | * complete new entry for this. */ | |
1528 | ||
9f6cbcf5 | 1529 | if (!ignore_different_name && !streq(basename(i->symlink_target), i->name)) |
0ec0deaa LP |
1530 | return -EXDEV; |
1531 | ||
3b319885 | 1532 | free_and_replace(i->path, i->symlink_target); |
0ec0deaa LP |
1533 | i->type = _UNIT_FILE_TYPE_INVALID; |
1534 | ||
1535 | return unit_file_load_or_readlink(c, i, i->path, root_dir, flags); | |
1536 | } | |
1537 | ||
64f9280e | 1538 | /** |
ff56349d ZJS |
1539 | * Search for the unit file. If the unit name is a symlink, follow the symlink to the |
1540 | * target, maybe more than once. Propagate the instance name if present. | |
64f9280e | 1541 | */ |
0ec0deaa LP |
1542 | static int install_info_traverse( |
1543 | UnitFileScope scope, | |
1544 | InstallContext *c, | |
0ec0deaa LP |
1545 | const LookupPaths *paths, |
1546 | UnitFileInstallInfo *start, | |
1547 | SearchFlags flags, | |
1548 | UnitFileInstallInfo **ret) { | |
83096483 | 1549 | |
cab6235f | 1550 | UnitFileInstallInfo *i; |
0ec0deaa | 1551 | unsigned k = 0; |
83096483 LP |
1552 | int r; |
1553 | ||
1554 | assert(paths); | |
0ec0deaa LP |
1555 | assert(start); |
1556 | assert(c); | |
83096483 | 1557 | |
e4bb56c7 | 1558 | r = unit_file_search(c, start, paths, flags); |
83096483 LP |
1559 | if (r < 0) |
1560 | return r; | |
1561 | ||
0ec0deaa LP |
1562 | i = start; |
1563 | while (i->type == UNIT_FILE_TYPE_SYMLINK) { | |
1564 | /* Follow the symlink */ | |
83096483 | 1565 | |
0ec0deaa LP |
1566 | if (++k > UNIT_FILE_FOLLOW_SYMLINK_MAX) |
1567 | return -ELOOP; | |
83096483 | 1568 | |
e1c5c2b0 | 1569 | if (!(flags & SEARCH_FOLLOW_CONFIG_SYMLINKS)) { |
dfead90d | 1570 | r = path_is_config(paths, i->path, true); |
e1c5c2b0 LP |
1571 | if (r < 0) |
1572 | return r; | |
1573 | if (r > 0) | |
1574 | return -ELOOP; | |
1575 | } | |
83096483 | 1576 | |
9f6cbcf5 | 1577 | r = install_info_follow(c, i, paths->root_dir, flags, false); |
0155928c | 1578 | if (r == -EXDEV) { |
0ec0deaa LP |
1579 | _cleanup_free_ char *buffer = NULL; |
1580 | const char *bn; | |
83096483 | 1581 | |
0ec0deaa LP |
1582 | /* Target has a different name, create a new |
1583 | * install info object for that, and continue | |
1584 | * with that. */ | |
83096483 | 1585 | |
0ec0deaa | 1586 | bn = basename(i->symlink_target); |
83096483 | 1587 | |
0ec0deaa LP |
1588 | if (unit_name_is_valid(i->name, UNIT_NAME_INSTANCE) && |
1589 | unit_name_is_valid(bn, UNIT_NAME_TEMPLATE)) { | |
83096483 | 1590 | |
0ec0deaa LP |
1591 | _cleanup_free_ char *instance = NULL; |
1592 | ||
1593 | r = unit_name_to_instance(i->name, &instance); | |
1594 | if (r < 0) | |
1595 | return r; | |
1596 | ||
1597 | r = unit_name_replace_instance(bn, instance, &buffer); | |
1598 | if (r < 0) | |
1599 | return r; | |
1600 | ||
9f6cbcf5 LP |
1601 | if (streq(buffer, i->name)) { |
1602 | ||
1603 | /* We filled in the instance, and the target stayed the same? If so, then let's | |
1604 | * honour the link as it is. */ | |
1605 | ||
1606 | r = install_info_follow(c, i, paths->root_dir, flags, true); | |
1607 | if (r < 0) | |
1608 | return r; | |
1609 | ||
1610 | continue; | |
1611 | } | |
1612 | ||
0ec0deaa LP |
1613 | bn = buffer; |
1614 | } | |
1615 | ||
19539807 | 1616 | r = install_info_add(c, bn, NULL, false, &i); |
0ec0deaa LP |
1617 | if (r < 0) |
1618 | return r; | |
1619 | ||
0155928c | 1620 | /* Try again, with the new target we found. */ |
e4bb56c7 | 1621 | r = unit_file_search(c, i, paths, flags); |
893275df ZJS |
1622 | if (r == -ENOENT) |
1623 | /* Translate error code to highlight this specific case */ | |
1624 | return -ENOLINK; | |
0ec0deaa LP |
1625 | } |
1626 | ||
0155928c ZJS |
1627 | if (r < 0) |
1628 | return r; | |
83096483 LP |
1629 | } |
1630 | ||
0ec0deaa LP |
1631 | if (ret) |
1632 | *ret = i; | |
83096483 | 1633 | |
0ec0deaa LP |
1634 | return 0; |
1635 | } | |
83096483 | 1636 | |
ff56349d ZJS |
1637 | /** |
1638 | * Call install_info_add() with name_or_path as the path (if name_or_path starts with "/") | |
1639 | * or the name (otherwise). root_dir is prepended to the path. | |
1640 | */ | |
401017e0 LP |
1641 | static int install_info_add_auto( |
1642 | InstallContext *c, | |
1643 | const LookupPaths *paths, | |
1644 | const char *name_or_path, | |
1645 | UnitFileInstallInfo **ret) { | |
1646 | ||
1647 | assert(c); | |
1648 | assert(name_or_path); | |
1649 | ||
1650 | if (path_is_absolute(name_or_path)) { | |
1651 | const char *pp; | |
1652 | ||
1653 | pp = prefix_roota(paths->root_dir, name_or_path); | |
1654 | ||
19539807 | 1655 | return install_info_add(c, NULL, pp, false, ret); |
401017e0 | 1656 | } else |
19539807 | 1657 | return install_info_add(c, name_or_path, NULL, false, ret); |
401017e0 LP |
1658 | } |
1659 | ||
0ec0deaa LP |
1660 | static int install_info_discover( |
1661 | UnitFileScope scope, | |
1662 | InstallContext *c, | |
0ec0deaa LP |
1663 | const LookupPaths *paths, |
1664 | const char *name, | |
1665 | SearchFlags flags, | |
59108fbe ZJS |
1666 | UnitFileInstallInfo **ret, |
1667 | UnitFileChange **changes, | |
da6053d0 | 1668 | size_t *n_changes) { |
83096483 | 1669 | |
0ec0deaa LP |
1670 | UnitFileInstallInfo *i; |
1671 | int r; | |
83096483 | 1672 | |
0ec0deaa LP |
1673 | assert(c); |
1674 | assert(paths); | |
1675 | assert(name); | |
1676 | ||
401017e0 | 1677 | r = install_info_add_auto(c, paths, name, &i); |
59108fbe ZJS |
1678 | if (r >= 0) |
1679 | r = install_info_traverse(scope, c, paths, i, flags, ret); | |
83096483 | 1680 | |
59108fbe ZJS |
1681 | if (r < 0) |
1682 | unit_file_changes_add(changes, n_changes, r, name, NULL); | |
1683 | return r; | |
83096483 LP |
1684 | } |
1685 | ||
1e475a0a RB |
1686 | static int install_info_discover_and_check( |
1687 | UnitFileScope scope, | |
1688 | InstallContext *c, | |
1689 | const LookupPaths *paths, | |
1690 | const char *name, | |
1691 | SearchFlags flags, | |
1692 | UnitFileInstallInfo **ret, | |
1693 | UnitFileChange **changes, | |
1694 | size_t *n_changes) { | |
1695 | ||
1696 | int r; | |
1697 | ||
1698 | r = install_info_discover(scope, c, paths, name, flags, ret, changes, n_changes); | |
1699 | if (r < 0) | |
1700 | return r; | |
1701 | ||
1702 | return install_info_may_process(ret ? *ret : NULL, paths, changes, n_changes); | |
1703 | } | |
1704 | ||
3f57bc22 ZJS |
1705 | int unit_file_verify_alias(const UnitFileInstallInfo *i, const char *dst, char **ret_dst) { |
1706 | _cleanup_free_ char *dst_updated = NULL; | |
aa0f357f ZJS |
1707 | int r; |
1708 | ||
3f57bc22 ZJS |
1709 | /* Verify that dst is a valid either a valid alias or a valid .wants/.requires symlink for the target |
1710 | * unit *i. Return negative on error or if not compatible, zero on success. | |
1711 | * | |
1712 | * ret_dst is set in cases where "instance propagation" happens, i.e. when the instance part is | |
1713 | * inserted into dst. It is not normally set, even on success, so that the caller can easily | |
162392b7 | 1714 | * distinguish the case where instance propagation occurred. |
3f57bc22 ZJS |
1715 | */ |
1716 | ||
1717 | const char *path_alias = strrchr(dst, '/'); | |
1718 | if (path_alias) { | |
1719 | /* This branch covers legacy Alias= function of creating .wants and .requires symlinks. */ | |
1720 | _cleanup_free_ char *dir = NULL; | |
1bf15585 | 1721 | char *p; |
aa0f357f | 1722 | |
3f57bc22 | 1723 | path_alias ++; /* skip over slash */ |
aa0f357f | 1724 | |
3f57bc22 ZJS |
1725 | dir = dirname_malloc(dst); |
1726 | if (!dir) | |
1727 | return log_oom(); | |
aa0f357f | 1728 | |
1bf15585 ZJS |
1729 | p = endswith(dir, ".wants"); |
1730 | if (!p) | |
1731 | p = endswith(dir, ".requires"); | |
1732 | if (!p) | |
3f57bc22 ZJS |
1733 | return log_warning_errno(SYNTHETIC_ERRNO(EXDEV), |
1734 | "Invalid path \"%s\" in alias.", dir); | |
1bf15585 ZJS |
1735 | *p = '\0'; /* dir should now be a unit name */ |
1736 | ||
1737 | r = unit_name_classify(dir); | |
1738 | if (r < 0) | |
1739 | return log_warning_errno(SYNTHETIC_ERRNO(EXDEV), | |
1740 | "Invalid unit name component \"%s\" in alias.", dir); | |
1741 | ||
1742 | const bool instance_propagation = r == UNIT_NAME_TEMPLATE; | |
3f57bc22 ZJS |
1743 | |
1744 | /* That's the name we want to use for verification. */ | |
1bf15585 | 1745 | r = unit_symlink_name_compatible(path_alias, i->name, instance_propagation); |
aa0f357f | 1746 | if (r < 0) |
3f57bc22 ZJS |
1747 | return log_error_errno(r, "Failed to verify alias validity: %m"); |
1748 | if (r == 0) | |
1749 | return log_warning_errno(SYNTHETIC_ERRNO(EXDEV), | |
1750 | "Invalid unit %s symlink %s.", | |
1751 | i->name, dst); | |
1752 | ||
1753 | } else { | |
1754 | /* If the symlink target has an instance set and the symlink source doesn't, we "propagate | |
1755 | * the instance", i.e. instantiate the symlink source with the target instance. */ | |
1756 | if (unit_name_is_valid(dst, UNIT_NAME_TEMPLATE)) { | |
1757 | _cleanup_free_ char *inst = NULL; | |
1758 | ||
1759 | r = unit_name_to_instance(i->name, &inst); | |
1760 | if (r < 0) | |
1761 | return log_error_errno(r, "Failed to extract instance name from %s: %m", i->name); | |
1762 | ||
1763 | if (r == UNIT_NAME_INSTANCE) { | |
1764 | r = unit_name_replace_instance(dst, inst, &dst_updated); | |
1765 | if (r < 0) | |
1766 | return log_error_errno(r, "Failed to build unit name from %s+%s: %m", | |
1767 | dst, inst); | |
1768 | } | |
1769 | } | |
aa0f357f | 1770 | |
3f57bc22 | 1771 | r = unit_validate_alias_symlink_and_warn(dst_updated ?: dst, i->name); |
aa0f357f ZJS |
1772 | if (r < 0) |
1773 | return r; | |
3f57bc22 | 1774 | |
aa0f357f ZJS |
1775 | } |
1776 | ||
3f57bc22 | 1777 | *ret_dst = TAKE_PTR(dst_updated); |
aa0f357f ZJS |
1778 | return 0; |
1779 | } | |
1780 | ||
83096483 | 1781 | static int install_info_symlink_alias( |
cab6235f | 1782 | UnitFileInstallInfo *i, |
401017e0 | 1783 | const LookupPaths *paths, |
83096483 LP |
1784 | const char *config_path, |
1785 | bool force, | |
1786 | UnitFileChange **changes, | |
da6053d0 | 1787 | size_t *n_changes) { |
83096483 LP |
1788 | |
1789 | char **s; | |
1790 | int r = 0, q; | |
1791 | ||
1792 | assert(i); | |
401017e0 | 1793 | assert(paths); |
83096483 LP |
1794 | assert(config_path); |
1795 | ||
1796 | STRV_FOREACH(s, i->aliases) { | |
3f57bc22 | 1797 | _cleanup_free_ char *alias_path = NULL, *dst = NULL, *dst_updated = NULL; |
83096483 | 1798 | |
19f6d710 LP |
1799 | q = install_full_printf(i, *s, &dst); |
1800 | if (q < 0) | |
1801 | return q; | |
83096483 | 1802 | |
3f57bc22 | 1803 | q = unit_file_verify_alias(i, dst, &dst_updated); |
aa0f357f ZJS |
1804 | if (q < 0) |
1805 | continue; | |
3d0205f2 | 1806 | |
3f57bc22 | 1807 | alias_path = path_make_absolute(dst_updated ?: dst, config_path); |
83096483 LP |
1808 | if (!alias_path) |
1809 | return -ENOMEM; | |
1810 | ||
60bec8e4 | 1811 | q = create_symlink(paths, i->path, alias_path, force, changes, n_changes); |
83096483 LP |
1812 | if (r == 0) |
1813 | r = q; | |
1814 | } | |
1815 | ||
1816 | return r; | |
1817 | } | |
1818 | ||
1819 | static int install_info_symlink_wants( | |
cab6235f | 1820 | UnitFileInstallInfo *i, |
401017e0 | 1821 | const LookupPaths *paths, |
83096483 | 1822 | const char *config_path, |
d54c4993 LP |
1823 | char **list, |
1824 | const char *suffix, | |
83096483 | 1825 | UnitFileChange **changes, |
da6053d0 | 1826 | size_t *n_changes) { |
83096483 | 1827 | |
d54c4993 LP |
1828 | _cleanup_free_ char *buf = NULL; |
1829 | const char *n; | |
83096483 LP |
1830 | char **s; |
1831 | int r = 0, q; | |
1832 | ||
1833 | assert(i); | |
401017e0 | 1834 | assert(paths); |
83096483 LP |
1835 | assert(config_path); |
1836 | ||
047d91f9 ZJS |
1837 | if (strv_isempty(list)) |
1838 | return 0; | |
1839 | ||
e4086ae0 | 1840 | if (unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE)) { |
047d91f9 ZJS |
1841 | UnitFileInstallInfo instance = { |
1842 | .type = _UNIT_FILE_TYPE_INVALID, | |
1843 | }; | |
1844 | _cleanup_free_ char *path = NULL; | |
0a327d75 | 1845 | |
e4086ae0 LP |
1846 | /* If this is a template, and we have no instance, don't do anything */ |
1847 | if (!i->default_instance) | |
1848 | return 1; | |
1849 | ||
7410616c LP |
1850 | r = unit_name_replace_instance(i->name, i->default_instance, &buf); |
1851 | if (r < 0) | |
1852 | return r; | |
83096483 | 1853 | |
047d91f9 ZJS |
1854 | instance.name = buf; |
1855 | r = unit_file_search(NULL, &instance, paths, SEARCH_FOLLOW_CONFIG_SYMLINKS); | |
1856 | if (r < 0) | |
1857 | return r; | |
1858 | ||
ae2a15bc | 1859 | path = TAKE_PTR(instance.path); |
047d91f9 ZJS |
1860 | |
1861 | if (instance.type == UNIT_FILE_TYPE_MASKED) { | |
1862 | unit_file_changes_add(changes, n_changes, -ERFKILL, path, NULL); | |
1863 | return -ERFKILL; | |
1864 | } | |
1865 | ||
d54c4993 LP |
1866 | n = buf; |
1867 | } else | |
1868 | n = i->name; | |
78d54bd4 | 1869 | |
d54c4993 | 1870 | STRV_FOREACH(s, list) { |
7fd1b19b | 1871 | _cleanup_free_ char *path = NULL, *dst = NULL; |
78d54bd4 | 1872 | |
19f6d710 LP |
1873 | q = install_full_printf(i, *s, &dst); |
1874 | if (q < 0) | |
1875 | return q; | |
7584d236 | 1876 | |
7410616c | 1877 | if (!unit_name_is_valid(dst, UNIT_NAME_ANY)) { |
d7ceaf72 ZJS |
1878 | unit_file_changes_add(changes, n_changes, -EUCLEAN, dst, NULL); |
1879 | r = -EUCLEAN; | |
78d54bd4 LP |
1880 | continue; |
1881 | } | |
1882 | ||
605405c6 | 1883 | path = strjoin(config_path, "/", dst, suffix, n); |
d54c4993 | 1884 | if (!path) |
78d54bd4 LP |
1885 | return -ENOMEM; |
1886 | ||
60bec8e4 | 1887 | q = create_symlink(paths, i->path, path, true, changes, n_changes); |
78d54bd4 LP |
1888 | if (r == 0) |
1889 | r = q; | |
1890 | } | |
1891 | ||
1892 | return r; | |
1893 | } | |
1894 | ||
83096483 | 1895 | static int install_info_symlink_link( |
cab6235f | 1896 | UnitFileInstallInfo *i, |
a8ffe6fb | 1897 | const LookupPaths *paths, |
83096483 LP |
1898 | const char *config_path, |
1899 | bool force, | |
1900 | UnitFileChange **changes, | |
da6053d0 | 1901 | size_t *n_changes) { |
83096483 | 1902 | |
7fd1b19b | 1903 | _cleanup_free_ char *path = NULL; |
1dacfd2a | 1904 | int r; |
83096483 LP |
1905 | |
1906 | assert(i); | |
1907 | assert(paths); | |
1908 | assert(config_path); | |
1909 | assert(i->path); | |
1910 | ||
32c0ed7b | 1911 | r = in_search_path(paths, i->path); |
fe4aede9 | 1912 | if (r < 0) |
83096483 | 1913 | return r; |
fe4aede9 ZJS |
1914 | if (r > 0) |
1915 | return 0; | |
83096483 | 1916 | |
657ee2d8 | 1917 | path = path_join(config_path, i->name); |
1dacfd2a | 1918 | if (!path) |
83096483 LP |
1919 | return -ENOMEM; |
1920 | ||
60bec8e4 | 1921 | return create_symlink(paths, i->path, path, force, changes, n_changes); |
83096483 LP |
1922 | } |
1923 | ||
1924 | static int install_info_apply( | |
cab6235f | 1925 | UnitFileInstallInfo *i, |
a8ffe6fb | 1926 | const LookupPaths *paths, |
83096483 LP |
1927 | const char *config_path, |
1928 | bool force, | |
1929 | UnitFileChange **changes, | |
da6053d0 | 1930 | size_t *n_changes) { |
83096483 LP |
1931 | |
1932 | int r, q; | |
1933 | ||
1934 | assert(i); | |
1935 | assert(paths); | |
1936 | assert(config_path); | |
1937 | ||
0ec0deaa LP |
1938 | if (i->type != UNIT_FILE_TYPE_REGULAR) |
1939 | return 0; | |
1940 | ||
401017e0 | 1941 | r = install_info_symlink_alias(i, paths, config_path, force, changes, n_changes); |
83096483 | 1942 | |
29380daf | 1943 | q = install_info_symlink_wants(i, paths, config_path, i->wanted_by, ".wants/", changes, n_changes); |
83096483 LP |
1944 | if (r == 0) |
1945 | r = q; | |
1946 | ||
29380daf | 1947 | q = install_info_symlink_wants(i, paths, config_path, i->required_by, ".requires/", changes, n_changes); |
78d54bd4 LP |
1948 | if (r == 0) |
1949 | r = q; | |
1950 | ||
e4bb56c7 | 1951 | q = install_info_symlink_link(i, paths, config_path, force, changes, n_changes); |
fe4aede9 ZJS |
1952 | /* Do not count links to the unit file towards the "carries_install_info" count */ |
1953 | if (r == 0 && q < 0) | |
83096483 LP |
1954 | r = q; |
1955 | ||
1956 | return r; | |
1957 | } | |
1958 | ||
1959 | static int install_context_apply( | |
0ec0deaa | 1960 | UnitFileScope scope, |
83096483 | 1961 | InstallContext *c, |
a8ffe6fb | 1962 | const LookupPaths *paths, |
83096483 | 1963 | const char *config_path, |
83096483 | 1964 | bool force, |
0ec0deaa | 1965 | SearchFlags flags, |
83096483 | 1966 | UnitFileChange **changes, |
da6053d0 | 1967 | size_t *n_changes) { |
83096483 | 1968 | |
cab6235f | 1969 | UnitFileInstallInfo *i; |
0ec0deaa | 1970 | int r; |
83096483 LP |
1971 | |
1972 | assert(c); | |
1973 | assert(paths); | |
1974 | assert(config_path); | |
1975 | ||
0ec0deaa | 1976 | if (ordered_hashmap_isempty(c->will_process)) |
d25e100b | 1977 | return 0; |
83096483 | 1978 | |
0ec0deaa | 1979 | r = ordered_hashmap_ensure_allocated(&c->have_processed, &string_hash_ops); |
d25e100b LP |
1980 | if (r < 0) |
1981 | return r; | |
83096483 | 1982 | |
2d5c93c7 | 1983 | r = 0; |
0ec0deaa LP |
1984 | while ((i = ordered_hashmap_first(c->will_process))) { |
1985 | int q; | |
83096483 | 1986 | |
0ec0deaa LP |
1987 | q = ordered_hashmap_move_one(c->have_processed, c->will_process, i->name); |
1988 | if (q < 0) | |
1989 | return q; | |
83096483 | 1990 | |
459500a3 ZJS |
1991 | q = install_info_traverse(scope, c, paths, i, flags, NULL); |
1992 | if (q < 0) { | |
56a4ce24 | 1993 | unit_file_changes_add(changes, n_changes, q, i->name, NULL); |
459500a3 | 1994 | return q; |
db093eed | 1995 | } |
0ec0deaa | 1996 | |
f1651715 | 1997 | /* We can attempt to process a masked unit when a different unit |
047d91f9 | 1998 | * that we were processing specifies it in Also=. */ |
f1651715 ZJS |
1999 | if (i->type == UNIT_FILE_TYPE_MASKED) { |
2000 | unit_file_changes_add(changes, n_changes, UNIT_FILE_IS_MASKED, i->path, NULL); | |
2001 | if (r >= 0) | |
047d91f9 ZJS |
2002 | /* Assume that something *could* have been enabled here, |
2003 | * avoid "empty [Install] section" warning. */ | |
f1651715 ZJS |
2004 | r += 1; |
2005 | continue; | |
2006 | } | |
2007 | ||
0ec0deaa LP |
2008 | if (i->type != UNIT_FILE_TYPE_REGULAR) |
2009 | continue; | |
83096483 | 2010 | |
e4bb56c7 | 2011 | q = install_info_apply(i, paths, config_path, force, changes, n_changes); |
0ec0deaa LP |
2012 | if (r >= 0) { |
2013 | if (q < 0) | |
2014 | r = q; | |
2015 | else | |
596fc263 | 2016 | r += q; |
0ec0deaa | 2017 | } |
83096483 LP |
2018 | } |
2019 | ||
2020 | return r; | |
2021 | } | |
2022 | ||
2023 | static int install_context_mark_for_removal( | |
0ec0deaa | 2024 | UnitFileScope scope, |
83096483 | 2025 | InstallContext *c, |
a8ffe6fb | 2026 | const LookupPaths *paths, |
83096483 | 2027 | Set **remove_symlinks_to, |
1830ac51 | 2028 | const char *config_path, |
637d6e5b | 2029 | UnitFileChange **changes, |
da6053d0 | 2030 | size_t *n_changes) { |
83096483 | 2031 | |
cab6235f | 2032 | UnitFileInstallInfo *i; |
0ec0deaa | 2033 | int r; |
83096483 LP |
2034 | |
2035 | assert(c); | |
2036 | assert(paths); | |
1830ac51 | 2037 | assert(config_path); |
83096483 LP |
2038 | |
2039 | /* Marks all items for removal */ | |
2040 | ||
0ec0deaa | 2041 | if (ordered_hashmap_isempty(c->will_process)) |
d25e100b | 2042 | return 0; |
83096483 | 2043 | |
0ec0deaa | 2044 | r = ordered_hashmap_ensure_allocated(&c->have_processed, &string_hash_ops); |
d25e100b LP |
2045 | if (r < 0) |
2046 | return r; | |
83096483 | 2047 | |
0ec0deaa | 2048 | while ((i = ordered_hashmap_first(c->will_process))) { |
83096483 | 2049 | |
0ec0deaa LP |
2050 | r = ordered_hashmap_move_one(c->have_processed, c->will_process, i->name); |
2051 | if (r < 0) | |
83096483 | 2052 | return r; |
29283ea4 | 2053 | |
e4bb56c7 | 2054 | r = install_info_traverse(scope, c, paths, i, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, NULL); |
19539807 | 2055 | if (r == -ENOLINK) { |
637d6e5b LP |
2056 | log_debug_errno(r, "Name %s leads to a dangling symlink, removing name.", i->name); |
2057 | unit_file_changes_add(changes, n_changes, UNIT_FILE_IS_DANGLING, i->path ?: i->name, NULL); | |
2058 | } else if (r == -ENOENT) { | |
2059 | ||
2060 | if (i->auxiliary) /* some unit specified in Also= or similar is missing */ | |
2061 | log_debug_errno(r, "Auxiliary unit of %s not found, removing name.", i->name); | |
2062 | else { | |
2063 | log_debug_errno(r, "Unit %s not found, removing name.", i->name); | |
2064 | unit_file_changes_add(changes, n_changes, r, i->path ?: i->name, NULL); | |
2065 | } | |
0ec0deaa | 2066 | |
637d6e5b LP |
2067 | } else if (r < 0) { |
2068 | log_debug_errno(r, "Failed to find unit %s, removing name: %m", i->name); | |
2069 | unit_file_changes_add(changes, n_changes, r, i->path ?: i->name, NULL); | |
2070 | } else if (i->type == UNIT_FILE_TYPE_MASKED) { | |
2071 | log_debug("Unit file %s is masked, ignoring.", i->name); | |
2072 | unit_file_changes_add(changes, n_changes, UNIT_FILE_IS_MASKED, i->path ?: i->name, NULL); | |
2073 | continue; | |
2074 | } else if (i->type != UNIT_FILE_TYPE_REGULAR) { | |
2075 | log_debug("Unit %s has type %s, ignoring.", i->name, unit_file_type_to_string(i->type) ?: "invalid"); | |
0ec0deaa | 2076 | continue; |
64f9280e | 2077 | } |
0ec0deaa LP |
2078 | |
2079 | r = mark_symlink_for_removal(remove_symlinks_to, i->name); | |
2080 | if (r < 0) | |
2081 | return r; | |
2082 | } | |
2083 | ||
2084 | return 0; | |
2085 | } | |
2086 | ||
2087 | int unit_file_mask( | |
2088 | UnitFileScope scope, | |
b3796dd8 | 2089 | UnitFileFlags flags, |
0ec0deaa LP |
2090 | const char *root_dir, |
2091 | char **files, | |
0ec0deaa | 2092 | UnitFileChange **changes, |
da6053d0 | 2093 | size_t *n_changes) { |
0ec0deaa | 2094 | |
8e766630 | 2095 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
e1c5c2b0 | 2096 | const char *config_path; |
0ec0deaa LP |
2097 | char **i; |
2098 | int r; | |
2099 | ||
2100 | assert(scope >= 0); | |
2101 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2102 | ||
4943d143 | 2103 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
0ec0deaa LP |
2104 | if (r < 0) |
2105 | return r; | |
2106 | ||
b3796dd8 | 2107 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
d0fd66a3 LP |
2108 | if (!config_path) |
2109 | return -ENXIO; | |
e1c5c2b0 | 2110 | |
0ec0deaa LP |
2111 | STRV_FOREACH(i, files) { |
2112 | _cleanup_free_ char *path = NULL; | |
2113 | int q; | |
2114 | ||
2115 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) { | |
2116 | if (r == 0) | |
2117 | r = -EINVAL; | |
2118 | continue; | |
2119 | } | |
2120 | ||
e1c5c2b0 | 2121 | path = path_make_absolute(*i, config_path); |
0ec0deaa LP |
2122 | if (!path) |
2123 | return -ENOMEM; | |
29283ea4 | 2124 | |
b3796dd8 | 2125 | q = create_symlink(&paths, "/dev/null", path, !!(flags & UNIT_FILE_FORCE), changes, n_changes); |
0ec0deaa | 2126 | if (q < 0 && r >= 0) |
83096483 LP |
2127 | r = q; |
2128 | } | |
2129 | ||
2130 | return r; | |
2131 | } | |
2132 | ||
0ec0deaa LP |
2133 | int unit_file_unmask( |
2134 | UnitFileScope scope, | |
b3796dd8 | 2135 | UnitFileFlags flags, |
0ec0deaa LP |
2136 | const char *root_dir, |
2137 | char **files, | |
2138 | UnitFileChange **changes, | |
da6053d0 | 2139 | size_t *n_changes) { |
0ec0deaa | 2140 | |
8e766630 | 2141 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
0ec0deaa | 2142 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; |
dc7dd61d | 2143 | _cleanup_strv_free_ char **todo = NULL; |
0ec0deaa | 2144 | size_t n_todo = 0, n_allocated = 0; |
e1c5c2b0 | 2145 | const char *config_path; |
0ec0deaa | 2146 | char **i; |
1830ac51 | 2147 | bool dry_run; |
0ec0deaa LP |
2148 | int r, q; |
2149 | ||
2150 | assert(scope >= 0); | |
2151 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2152 | ||
4943d143 | 2153 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
0ec0deaa LP |
2154 | if (r < 0) |
2155 | return r; | |
2156 | ||
1830ac51 MB |
2157 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
2158 | if (!config_path) | |
2159 | return -ENXIO; | |
2160 | ||
2161 | dry_run = !!(flags & UNIT_FILE_DRY_RUN); | |
2162 | ||
0ec0deaa | 2163 | STRV_FOREACH(i, files) { |
1830ac51 MB |
2164 | _cleanup_free_ char *path = NULL; |
2165 | ||
0ec0deaa LP |
2166 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) |
2167 | return -EINVAL; | |
2168 | ||
1830ac51 MB |
2169 | path = path_make_absolute(*i, config_path); |
2170 | if (!path) | |
2171 | return -ENOMEM; | |
0ec0deaa | 2172 | |
1830ac51 MB |
2173 | r = null_or_empty_path(path); |
2174 | if (r == -ENOENT) | |
2175 | continue; | |
2176 | if (r < 0) | |
2177 | return r; | |
2178 | if (r == 0) | |
2179 | continue; | |
0ec0deaa | 2180 | |
1830ac51 MB |
2181 | if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2)) |
2182 | return -ENOMEM; | |
d054eae6 | 2183 | |
1830ac51 MB |
2184 | todo[n_todo] = strdup(*i); |
2185 | if (!todo[n_todo]) | |
2186 | return -ENOMEM; | |
4910b350 | 2187 | |
1830ac51 | 2188 | n_todo++; |
0ec0deaa LP |
2189 | } |
2190 | ||
2191 | strv_uniq(todo); | |
2192 | ||
2193 | r = 0; | |
1830ac51 MB |
2194 | STRV_FOREACH(i, todo) { |
2195 | _cleanup_free_ char *path = NULL; | |
2196 | const char *rp; | |
0ec0deaa | 2197 | |
1830ac51 MB |
2198 | path = path_make_absolute(*i, config_path); |
2199 | if (!path) | |
2200 | return -ENOMEM; | |
4910b350 | 2201 | |
1830ac51 MB |
2202 | if (!dry_run && unlink(path) < 0) { |
2203 | if (errno != ENOENT) { | |
2204 | if (r >= 0) | |
2205 | r = -errno; | |
2206 | unit_file_changes_add(changes, n_changes, -errno, path, NULL); | |
af3d8113 | 2207 | } |
0ec0deaa | 2208 | |
1830ac51 | 2209 | continue; |
4910b350 | 2210 | } |
401017e0 | 2211 | |
1830ac51 MB |
2212 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, path, NULL); |
2213 | ||
2214 | rp = skip_root(&paths, path); | |
2215 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: path); | |
2216 | if (q < 0) | |
2217 | return q; | |
0ec0deaa LP |
2218 | } |
2219 | ||
1830ac51 MB |
2220 | q = remove_marked_symlinks(remove_symlinks_to, config_path, &paths, dry_run, changes, n_changes); |
2221 | if (r >= 0) | |
2222 | r = q; | |
2223 | ||
0ec0deaa LP |
2224 | return r; |
2225 | } | |
2226 | ||
2227 | int unit_file_link( | |
e94937df | 2228 | UnitFileScope scope, |
b3796dd8 | 2229 | UnitFileFlags flags, |
e94937df LN |
2230 | const char *root_dir, |
2231 | char **files, | |
e94937df | 2232 | UnitFileChange **changes, |
da6053d0 | 2233 | size_t *n_changes) { |
e94937df | 2234 | |
8e766630 | 2235 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
8af35ba6 | 2236 | _cleanup_strv_free_ char **todo = NULL; |
0ec0deaa | 2237 | size_t n_todo = 0, n_allocated = 0; |
e1c5c2b0 | 2238 | const char *config_path; |
e94937df | 2239 | char **i; |
0ec0deaa | 2240 | int r, q; |
e94937df LN |
2241 | |
2242 | assert(scope >= 0); | |
2243 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2244 | ||
4943d143 | 2245 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
e94937df LN |
2246 | if (r < 0) |
2247 | return r; | |
2248 | ||
b3796dd8 | 2249 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
d0fd66a3 LP |
2250 | if (!config_path) |
2251 | return -ENXIO; | |
e94937df LN |
2252 | |
2253 | STRV_FOREACH(i, files) { | |
0ec0deaa LP |
2254 | _cleanup_free_ char *full = NULL; |
2255 | struct stat st; | |
2256 | char *fn; | |
e94937df | 2257 | |
0ec0deaa LP |
2258 | if (!path_is_absolute(*i)) |
2259 | return -EINVAL; | |
e94937df | 2260 | |
0ec0deaa LP |
2261 | fn = basename(*i); |
2262 | if (!unit_name_is_valid(fn, UNIT_NAME_ANY)) | |
2263 | return -EINVAL; | |
2264 | ||
c6134d3e | 2265 | full = path_join(paths.root_dir, *i); |
0ec0deaa LP |
2266 | if (!full) |
2267 | return -ENOMEM; | |
2268 | ||
2269 | if (lstat(full, &st) < 0) | |
2270 | return -errno; | |
3cc44114 LP |
2271 | r = stat_verify_regular(&st); |
2272 | if (r < 0) | |
2273 | return r; | |
0ec0deaa | 2274 | |
32c0ed7b | 2275 | q = in_search_path(&paths, *i); |
0ec0deaa LP |
2276 | if (q < 0) |
2277 | return q; | |
2278 | if (q > 0) | |
2279 | continue; | |
2280 | ||
2281 | if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2)) | |
2282 | return -ENOMEM; | |
2283 | ||
8af35ba6 EV |
2284 | todo[n_todo] = strdup(*i); |
2285 | if (!todo[n_todo]) | |
2286 | return -ENOMEM; | |
2287 | ||
2288 | n_todo++; | |
e94937df LN |
2289 | } |
2290 | ||
0ec0deaa | 2291 | strv_uniq(todo); |
e94937df | 2292 | |
0ec0deaa LP |
2293 | r = 0; |
2294 | STRV_FOREACH(i, todo) { | |
401017e0 | 2295 | _cleanup_free_ char *new_path = NULL; |
0ec0deaa | 2296 | |
401017e0 LP |
2297 | new_path = path_make_absolute(basename(*i), config_path); |
2298 | if (!new_path) | |
0ec0deaa LP |
2299 | return -ENOMEM; |
2300 | ||
b3796dd8 | 2301 | q = create_symlink(&paths, *i, new_path, !!(flags & UNIT_FILE_FORCE), changes, n_changes); |
0ec0deaa LP |
2302 | if (q < 0 && r >= 0) |
2303 | r = q; | |
2d5c93c7 MS |
2304 | } |
2305 | ||
0ec0deaa LP |
2306 | return r; |
2307 | } | |
2308 | ||
344ca755 LP |
2309 | static int path_shall_revert(const LookupPaths *paths, const char *path) { |
2310 | int r; | |
2311 | ||
2312 | assert(paths); | |
2313 | assert(path); | |
2314 | ||
2315 | /* Checks whether the path is one where the drop-in directories shall be removed. */ | |
2316 | ||
dfead90d | 2317 | r = path_is_config(paths, path, true); |
344ca755 LP |
2318 | if (r != 0) |
2319 | return r; | |
2320 | ||
2321 | r = path_is_control(paths, path); | |
2322 | if (r != 0) | |
2323 | return r; | |
2324 | ||
2325 | return path_is_transient(paths, path); | |
2326 | } | |
2327 | ||
2328 | int unit_file_revert( | |
2329 | UnitFileScope scope, | |
2330 | const char *root_dir, | |
2331 | char **files, | |
2332 | UnitFileChange **changes, | |
da6053d0 | 2333 | size_t *n_changes) { |
344ca755 LP |
2334 | |
2335 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
8e766630 | 2336 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
344ca755 LP |
2337 | _cleanup_strv_free_ char **todo = NULL; |
2338 | size_t n_todo = 0, n_allocated = 0; | |
2339 | char **i; | |
2340 | int r, q; | |
2341 | ||
2342 | /* Puts a unit file back into vendor state. This means: | |
2343 | * | |
2344 | * a) we remove all drop-in snippets added by the user ("config"), add to transient units ("transient"), and | |
2345 | * added via "systemctl set-property" ("control"), but not if the drop-in is generated ("generated"). | |
2346 | * | |
2347 | * c) if there's a vendor unit file (i.e. one in /usr) we remove any configured overriding unit files (i.e. in | |
2348 | * "config", but not in "transient" or "control" or even "generated"). | |
2349 | * | |
4f25723c | 2350 | * We remove all that in both the runtime and the persistent directories, if that applies. |
344ca755 LP |
2351 | */ |
2352 | ||
2353 | r = lookup_paths_init(&paths, scope, 0, root_dir); | |
2354 | if (r < 0) | |
2355 | return r; | |
2356 | ||
2357 | STRV_FOREACH(i, files) { | |
2358 | bool has_vendor = false; | |
2359 | char **p; | |
2360 | ||
2361 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) | |
2362 | return -EINVAL; | |
2363 | ||
2364 | STRV_FOREACH(p, paths.search_path) { | |
2365 | _cleanup_free_ char *path = NULL, *dropin = NULL; | |
2366 | struct stat st; | |
2367 | ||
2368 | path = path_make_absolute(*i, *p); | |
2369 | if (!path) | |
2370 | return -ENOMEM; | |
2371 | ||
2372 | r = lstat(path, &st); | |
2373 | if (r < 0) { | |
2374 | if (errno != ENOENT) | |
2375 | return -errno; | |
2376 | } else if (S_ISREG(st.st_mode)) { | |
2377 | /* Check if there's a vendor version */ | |
2378 | r = path_is_vendor(&paths, path); | |
2379 | if (r < 0) | |
2380 | return r; | |
2381 | if (r > 0) | |
2382 | has_vendor = true; | |
2383 | } | |
2384 | ||
b910cc72 | 2385 | dropin = strjoin(path, ".d"); |
344ca755 LP |
2386 | if (!dropin) |
2387 | return -ENOMEM; | |
2388 | ||
2389 | r = lstat(dropin, &st); | |
2390 | if (r < 0) { | |
2391 | if (errno != ENOENT) | |
2392 | return -errno; | |
2393 | } else if (S_ISDIR(st.st_mode)) { | |
2394 | /* Remove the drop-ins */ | |
2395 | r = path_shall_revert(&paths, dropin); | |
2396 | if (r < 0) | |
2397 | return r; | |
2398 | if (r > 0) { | |
2399 | if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2)) | |
2400 | return -ENOMEM; | |
2401 | ||
1cc6c93a | 2402 | todo[n_todo++] = TAKE_PTR(dropin); |
344ca755 LP |
2403 | } |
2404 | } | |
2405 | } | |
2406 | ||
2407 | if (!has_vendor) | |
2408 | continue; | |
2409 | ||
2410 | /* OK, there's a vendor version, hence drop all configuration versions */ | |
2411 | STRV_FOREACH(p, paths.search_path) { | |
2412 | _cleanup_free_ char *path = NULL; | |
2413 | struct stat st; | |
2414 | ||
2415 | path = path_make_absolute(*i, *p); | |
2416 | if (!path) | |
2417 | return -ENOMEM; | |
2418 | ||
2419 | r = lstat(path, &st); | |
2420 | if (r < 0) { | |
2421 | if (errno != ENOENT) | |
2422 | return -errno; | |
2423 | } else if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) { | |
dfead90d | 2424 | r = path_is_config(&paths, path, true); |
344ca755 LP |
2425 | if (r < 0) |
2426 | return r; | |
2427 | if (r > 0) { | |
2428 | if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2)) | |
2429 | return -ENOMEM; | |
2430 | ||
1cc6c93a | 2431 | todo[n_todo++] = TAKE_PTR(path); |
344ca755 LP |
2432 | } |
2433 | } | |
2434 | } | |
2435 | } | |
2436 | ||
2437 | strv_uniq(todo); | |
2438 | ||
2439 | r = 0; | |
2440 | STRV_FOREACH(i, todo) { | |
2441 | _cleanup_strv_free_ char **fs = NULL; | |
2442 | const char *rp; | |
2443 | char **j; | |
2444 | ||
2445 | (void) get_files_in_directory(*i, &fs); | |
2446 | ||
2447 | q = rm_rf(*i, REMOVE_ROOT|REMOVE_PHYSICAL); | |
2448 | if (q < 0 && q != -ENOENT && r >= 0) { | |
2449 | r = q; | |
2450 | continue; | |
2451 | } | |
2452 | ||
2453 | STRV_FOREACH(j, fs) { | |
2454 | _cleanup_free_ char *t = NULL; | |
2455 | ||
657ee2d8 | 2456 | t = path_join(*i, *j); |
344ca755 LP |
2457 | if (!t) |
2458 | return -ENOMEM; | |
2459 | ||
2460 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, t, NULL); | |
2461 | } | |
2462 | ||
2463 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, *i, NULL); | |
2464 | ||
2465 | rp = skip_root(&paths, *i); | |
2466 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: *i); | |
2467 | if (q < 0) | |
2468 | return q; | |
2469 | } | |
2470 | ||
3b3557c4 | 2471 | q = remove_marked_symlinks(remove_symlinks_to, paths.runtime_config, &paths, false, changes, n_changes); |
344ca755 LP |
2472 | if (r >= 0) |
2473 | r = q; | |
2474 | ||
3b3557c4 | 2475 | q = remove_marked_symlinks(remove_symlinks_to, paths.persistent_config, &paths, false, changes, n_changes); |
344ca755 LP |
2476 | if (r >= 0) |
2477 | r = q; | |
2478 | ||
2479 | return r; | |
2480 | } | |
2481 | ||
0ec0deaa LP |
2482 | int unit_file_add_dependency( |
2483 | UnitFileScope scope, | |
b3796dd8 | 2484 | UnitFileFlags flags, |
0ec0deaa LP |
2485 | const char *root_dir, |
2486 | char **files, | |
2487 | const char *target, | |
2488 | UnitDependency dep, | |
0ec0deaa | 2489 | UnitFileChange **changes, |
da6053d0 | 2490 | size_t *n_changes) { |
0ec0deaa | 2491 | |
8e766630 | 2492 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
0ec0deaa | 2493 | _cleanup_(install_context_done) InstallContext c = {}; |
0ec0deaa | 2494 | UnitFileInstallInfo *i, *target_info; |
e1c5c2b0 | 2495 | const char *config_path; |
0ec0deaa LP |
2496 | char **f; |
2497 | int r; | |
2498 | ||
2499 | assert(scope >= 0); | |
2500 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2501 | assert(target); | |
2502 | ||
2503 | if (!IN_SET(dep, UNIT_WANTS, UNIT_REQUIRES)) | |
2504 | return -EINVAL; | |
2505 | ||
2506 | if (!unit_name_is_valid(target, UNIT_NAME_ANY)) | |
2507 | return -EINVAL; | |
2508 | ||
4943d143 | 2509 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
0ec0deaa LP |
2510 | if (r < 0) |
2511 | return r; | |
2512 | ||
b3796dd8 | 2513 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
d0fd66a3 LP |
2514 | if (!config_path) |
2515 | return -ENXIO; | |
0ec0deaa | 2516 | |
1e475a0a RB |
2517 | r = install_info_discover_and_check(scope, &c, &paths, target, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2518 | &target_info, changes, n_changes); | |
76adb5b8 LP |
2519 | if (r < 0) |
2520 | return r; | |
0ec0deaa LP |
2521 | |
2522 | assert(target_info->type == UNIT_FILE_TYPE_REGULAR); | |
e94937df | 2523 | |
0ec0deaa LP |
2524 | STRV_FOREACH(f, files) { |
2525 | char ***l; | |
2526 | ||
1e475a0a RB |
2527 | r = install_info_discover_and_check(scope, &c, &paths, *f, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2528 | &i, changes, n_changes); | |
76adb5b8 LP |
2529 | if (r < 0) |
2530 | return r; | |
0ec0deaa LP |
2531 | |
2532 | assert(i->type == UNIT_FILE_TYPE_REGULAR); | |
2533 | ||
2534 | /* We didn't actually load anything from the unit | |
2535 | * file, but instead just add in our new symlink to | |
2536 | * create. */ | |
e94937df LN |
2537 | |
2538 | if (dep == UNIT_WANTS) | |
0ec0deaa | 2539 | l = &i->wanted_by; |
e94937df | 2540 | else |
0ec0deaa | 2541 | l = &i->required_by; |
e94937df | 2542 | |
0ec0deaa | 2543 | strv_free(*l); |
bea1a013 | 2544 | *l = strv_new(target_info->name); |
0ec0deaa LP |
2545 | if (!*l) |
2546 | return -ENOMEM; | |
e94937df LN |
2547 | } |
2548 | ||
b3796dd8 | 2549 | return install_context_apply(scope, &c, &paths, config_path, !!(flags & UNIT_FILE_FORCE), SEARCH_FOLLOW_CONFIG_SYMLINKS, changes, n_changes); |
e94937df LN |
2550 | } |
2551 | ||
83096483 LP |
2552 | int unit_file_enable( |
2553 | UnitFileScope scope, | |
b3796dd8 | 2554 | UnitFileFlags flags, |
83096483 | 2555 | const char *root_dir, |
7195aa42 | 2556 | char **files, |
83096483 | 2557 | UnitFileChange **changes, |
da6053d0 | 2558 | size_t *n_changes) { |
83096483 | 2559 | |
8e766630 | 2560 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
59ccf93d | 2561 | _cleanup_(install_context_done) InstallContext c = {}; |
e1c5c2b0 | 2562 | const char *config_path; |
0ec0deaa LP |
2563 | UnitFileInstallInfo *i; |
2564 | char **f; | |
83096483 LP |
2565 | int r; |
2566 | ||
2567 | assert(scope >= 0); | |
2568 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2569 | ||
4943d143 | 2570 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
83096483 LP |
2571 | if (r < 0) |
2572 | return r; | |
2573 | ||
b3796dd8 | 2574 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
d0fd66a3 LP |
2575 | if (!config_path) |
2576 | return -ENXIO; | |
83096483 | 2577 | |
0ec0deaa | 2578 | STRV_FOREACH(f, files) { |
1e475a0a RB |
2579 | r = install_info_discover_and_check(scope, &c, &paths, *f, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2580 | &i, changes, n_changes); | |
76adb5b8 LP |
2581 | if (r < 0) |
2582 | return r; | |
0ec0deaa LP |
2583 | |
2584 | assert(i->type == UNIT_FILE_TYPE_REGULAR); | |
83096483 LP |
2585 | } |
2586 | ||
729e3769 | 2587 | /* This will return the number of symlink rules that were |
d25e100b LP |
2588 | supposed to be created, not the ones actually created. This |
2589 | is useful to determine whether the passed files had any | |
2590 | installation data at all. */ | |
b91a3b02 | 2591 | |
b3796dd8 | 2592 | return install_context_apply(scope, &c, &paths, config_path, !!(flags & UNIT_FILE_FORCE), SEARCH_LOAD, changes, n_changes); |
83096483 LP |
2593 | } |
2594 | ||
2595 | int unit_file_disable( | |
2596 | UnitFileScope scope, | |
b3796dd8 | 2597 | UnitFileFlags flags, |
83096483 | 2598 | const char *root_dir, |
7195aa42 | 2599 | char **files, |
83096483 | 2600 | UnitFileChange **changes, |
da6053d0 | 2601 | size_t *n_changes) { |
83096483 | 2602 | |
8e766630 | 2603 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
59ccf93d | 2604 | _cleanup_(install_context_done) InstallContext c = {}; |
7fd1b19b | 2605 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; |
e1c5c2b0 | 2606 | const char *config_path; |
0ec0deaa LP |
2607 | char **i; |
2608 | int r; | |
83096483 LP |
2609 | |
2610 | assert(scope >= 0); | |
2611 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2612 | ||
4943d143 | 2613 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
83096483 LP |
2614 | if (r < 0) |
2615 | return r; | |
2616 | ||
1830ac51 MB |
2617 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
2618 | if (!config_path) | |
2619 | return -ENXIO; | |
2620 | ||
83096483 | 2621 | STRV_FOREACH(i, files) { |
0ec0deaa LP |
2622 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) |
2623 | return -EINVAL; | |
2624 | ||
19539807 | 2625 | r = install_info_add(&c, *i, NULL, false, NULL); |
83096483 | 2626 | if (r < 0) |
d9e5e694 | 2627 | return r; |
83096483 LP |
2628 | } |
2629 | ||
1830ac51 | 2630 | r = install_context_mark_for_removal(scope, &c, &paths, &remove_symlinks_to, config_path, changes, n_changes); |
0ec0deaa LP |
2631 | if (r < 0) |
2632 | return r; | |
83096483 | 2633 | |
1830ac51 | 2634 | return remove_marked_symlinks(remove_symlinks_to, config_path, &paths, !!(flags & UNIT_FILE_DRY_RUN), changes, n_changes); |
83096483 LP |
2635 | } |
2636 | ||
2637 | int unit_file_reenable( | |
2638 | UnitFileScope scope, | |
b3796dd8 | 2639 | UnitFileFlags flags, |
83096483 | 2640 | const char *root_dir, |
7195aa42 | 2641 | char **files, |
83096483 | 2642 | UnitFileChange **changes, |
da6053d0 | 2643 | size_t *n_changes) { |
0ec0deaa LP |
2644 | |
2645 | char **n; | |
92d430a9 | 2646 | int r; |
0ec0deaa | 2647 | size_t l, i; |
83096483 | 2648 | |
0ec0deaa LP |
2649 | /* First, we invoke the disable command with only the basename... */ |
2650 | l = strv_length(files); | |
2651 | n = newa(char*, l+1); | |
2652 | for (i = 0; i < l; i++) | |
2653 | n[i] = basename(files[i]); | |
2654 | n[i] = NULL; | |
2655 | ||
b3796dd8 | 2656 | r = unit_file_disable(scope, flags, root_dir, n, changes, n_changes); |
83096483 | 2657 | if (r < 0) |
d9e5e694 | 2658 | return r; |
83096483 | 2659 | |
0ec0deaa | 2660 | /* But the enable command with the full name */ |
b3796dd8 | 2661 | return unit_file_enable(scope, flags, root_dir, files, changes, n_changes); |
83096483 LP |
2662 | } |
2663 | ||
99504dd4 VP |
2664 | int unit_file_set_default( |
2665 | UnitFileScope scope, | |
b3796dd8 | 2666 | UnitFileFlags flags, |
99504dd4 | 2667 | const char *root_dir, |
0ec0deaa | 2668 | const char *name, |
99504dd4 | 2669 | UnitFileChange **changes, |
da6053d0 | 2670 | size_t *n_changes) { |
99504dd4 | 2671 | |
8e766630 | 2672 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
59ccf93d | 2673 | _cleanup_(install_context_done) InstallContext c = {}; |
0ec0deaa | 2674 | UnitFileInstallInfo *i; |
60bec8e4 | 2675 | const char *new_path; |
99504dd4 | 2676 | int r; |
99504dd4 VP |
2677 | |
2678 | assert(scope >= 0); | |
2679 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
0ec0deaa | 2680 | assert(name); |
99504dd4 | 2681 | |
401017e0 | 2682 | if (unit_name_to_type(name) != UNIT_TARGET) /* this also validates the name */ |
0ec0deaa LP |
2683 | return -EINVAL; |
2684 | if (streq(name, SPECIAL_DEFAULT_TARGET)) | |
99504dd4 VP |
2685 | return -EINVAL; |
2686 | ||
4943d143 | 2687 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
99504dd4 VP |
2688 | if (r < 0) |
2689 | return r; | |
2690 | ||
1e475a0a | 2691 | r = install_info_discover_and_check(scope, &c, &paths, name, 0, &i, changes, n_changes); |
76adb5b8 LP |
2692 | if (r < 0) |
2693 | return r; | |
99504dd4 | 2694 | |
401017e0 | 2695 | new_path = strjoina(paths.persistent_config, "/" SPECIAL_DEFAULT_TARGET); |
b3796dd8 | 2696 | return create_symlink(&paths, i->path, new_path, !!(flags & UNIT_FILE_FORCE), changes, n_changes); |
99504dd4 VP |
2697 | } |
2698 | ||
2699 | int unit_file_get_default( | |
2700 | UnitFileScope scope, | |
2701 | const char *root_dir, | |
2702 | char **name) { | |
2703 | ||
8e766630 | 2704 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
0ec0deaa LP |
2705 | _cleanup_(install_context_done) InstallContext c = {}; |
2706 | UnitFileInstallInfo *i; | |
2707 | char *n; | |
99504dd4 VP |
2708 | int r; |
2709 | ||
16ed0233 LP |
2710 | assert(scope >= 0); |
2711 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2712 | assert(name); | |
2713 | ||
4943d143 | 2714 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
0ec0deaa LP |
2715 | if (r < 0) |
2716 | return r; | |
99504dd4 | 2717 | |
59108fbe ZJS |
2718 | r = install_info_discover(scope, &c, &paths, SPECIAL_DEFAULT_TARGET, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2719 | &i, NULL, NULL); | |
0ec0deaa LP |
2720 | if (r < 0) |
2721 | return r; | |
af3d8113 | 2722 | r = install_info_may_process(i, &paths, NULL, 0); |
76adb5b8 LP |
2723 | if (r < 0) |
2724 | return r; | |
99504dd4 | 2725 | |
0ec0deaa LP |
2726 | n = strdup(i->name); |
2727 | if (!n) | |
2728 | return -ENOMEM; | |
99504dd4 | 2729 | |
0ec0deaa LP |
2730 | *name = n; |
2731 | return 0; | |
99504dd4 VP |
2732 | } |
2733 | ||
d6d98276 | 2734 | int unit_file_lookup_state( |
83096483 | 2735 | UnitFileScope scope, |
a8ffe6fb | 2736 | const LookupPaths *paths, |
0ec0deaa LP |
2737 | const char *name, |
2738 | UnitFileState *ret) { | |
83096483 | 2739 | |
0ec0deaa LP |
2740 | _cleanup_(install_context_done) InstallContext c = {}; |
2741 | UnitFileInstallInfo *i; | |
2742 | UnitFileState state; | |
2743 | int r; | |
83096483 | 2744 | |
a8ffe6fb | 2745 | assert(paths); |
0ec0deaa | 2746 | assert(name); |
83096483 | 2747 | |
7410616c | 2748 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
83096483 LP |
2749 | return -EINVAL; |
2750 | ||
59108fbe ZJS |
2751 | r = install_info_discover(scope, &c, paths, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2752 | &i, NULL, NULL); | |
0ec0deaa | 2753 | if (r < 0) |
3e8d06d9 ZJS |
2754 | return log_debug_errno(r, "Failed to discover unit %s: %m", name); |
2755 | ||
2756 | assert(IN_SET(i->type, UNIT_FILE_TYPE_REGULAR, UNIT_FILE_TYPE_MASKED)); | |
2757 | log_debug("Found unit %s at %s (%s)", name, strna(i->path), | |
2758 | i->type == UNIT_FILE_TYPE_REGULAR ? "regular file" : "mask"); | |
83096483 | 2759 | |
0ec0deaa LP |
2760 | /* Shortcut things, if the caller just wants to know if this unit exists. */ |
2761 | if (!ret) | |
2762 | return 0; | |
83096483 | 2763 | |
0ec0deaa | 2764 | switch (i->type) { |
67820a0c | 2765 | |
0ec0deaa | 2766 | case UNIT_FILE_TYPE_MASKED: |
dfead90d | 2767 | r = path_is_runtime(paths, i->path, true); |
385eb996 LP |
2768 | if (r < 0) |
2769 | return r; | |
2770 | ||
2771 | state = r > 0 ? UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED; | |
0ec0deaa | 2772 | break; |
83096483 | 2773 | |
0ec0deaa | 2774 | case UNIT_FILE_TYPE_REGULAR: |
f4dc1e65 | 2775 | r = path_is_generator(paths, i->path); |
f4139308 LP |
2776 | if (r < 0) |
2777 | return r; | |
2778 | if (r > 0) { | |
2779 | state = UNIT_FILE_GENERATED; | |
2780 | break; | |
2781 | } | |
2782 | ||
e4fca67f LP |
2783 | r = path_is_transient(paths, i->path); |
2784 | if (r < 0) | |
2785 | return r; | |
2786 | if (r > 0) { | |
2787 | state = UNIT_FILE_TRANSIENT; | |
2788 | break; | |
2789 | } | |
2790 | ||
5cd8ae31 ZJS |
2791 | /* Check if any of the Alias= symlinks have been created. |
2792 | * We ignore other aliases, and only check those that would | |
2793 | * be created by systemctl enable for this unit. */ | |
d2561cfd | 2794 | r = find_symlinks_in_scope(scope, paths, i, true, &state); |
d9b4b48f ZJS |
2795 | if (r < 0) |
2796 | return r; | |
2797 | if (r > 0) | |
2798 | break; | |
2799 | ||
2800 | /* Check if the file is known under other names. If it is, | |
2801 | * it might be in use. Report that as UNIT_FILE_INDIRECT. */ | |
d2561cfd | 2802 | r = find_symlinks_in_scope(scope, paths, i, false, &state); |
d9e5e694 ZJS |
2803 | if (r < 0) |
2804 | return r; | |
d9b4b48f ZJS |
2805 | if (r > 0) |
2806 | state = UNIT_FILE_INDIRECT; | |
2807 | else { | |
7a7ec2bf | 2808 | if (unit_file_install_info_has_rules(i)) |
0ec0deaa | 2809 | state = UNIT_FILE_DISABLED; |
7a7ec2bf | 2810 | else if (unit_file_install_info_has_also(i)) |
0ec0deaa LP |
2811 | state = UNIT_FILE_INDIRECT; |
2812 | else | |
2813 | state = UNIT_FILE_STATIC; | |
2814 | } | |
83096483 | 2815 | |
0ec0deaa LP |
2816 | break; |
2817 | ||
2818 | default: | |
e5369d1a | 2819 | assert_not_reached("Unexpected unit file type."); |
83096483 LP |
2820 | } |
2821 | ||
0ec0deaa LP |
2822 | *ret = state; |
2823 | return 0; | |
83096483 LP |
2824 | } |
2825 | ||
0ec0deaa | 2826 | int unit_file_get_state( |
a8ffe6fb ZJS |
2827 | UnitFileScope scope, |
2828 | const char *root_dir, | |
0ec0deaa LP |
2829 | const char *name, |
2830 | UnitFileState *ret) { | |
a8ffe6fb | 2831 | |
8e766630 | 2832 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
a8ffe6fb ZJS |
2833 | int r; |
2834 | ||
2835 | assert(scope >= 0); | |
2836 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2837 | assert(name); | |
2838 | ||
4943d143 | 2839 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
a8ffe6fb ZJS |
2840 | if (r < 0) |
2841 | return r; | |
2842 | ||
e4bb56c7 | 2843 | return unit_file_lookup_state(scope, &paths, name, ret); |
a8ffe6fb ZJS |
2844 | } |
2845 | ||
e735decc LP |
2846 | int unit_file_exists(UnitFileScope scope, const LookupPaths *paths, const char *name) { |
2847 | _cleanup_(install_context_done) InstallContext c = {}; | |
2848 | int r; | |
2849 | ||
2850 | assert(paths); | |
2851 | assert(name); | |
2852 | ||
2853 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) | |
2854 | return -EINVAL; | |
2855 | ||
59108fbe | 2856 | r = install_info_discover(scope, &c, paths, name, 0, NULL, NULL, NULL); |
e735decc LP |
2857 | if (r == -ENOENT) |
2858 | return 0; | |
2859 | if (r < 0) | |
2860 | return r; | |
2861 | ||
2862 | return 1; | |
2863 | } | |
2864 | ||
4c9565ee RB |
2865 | static int split_pattern_into_name_and_instances(const char *pattern, char **out_unit_name, char ***out_instances) { |
2866 | _cleanup_strv_free_ char **instances = NULL; | |
2867 | _cleanup_free_ char *unit_name = NULL; | |
2868 | int r; | |
2869 | ||
2870 | assert(pattern); | |
2871 | assert(out_instances); | |
2872 | assert(out_unit_name); | |
2873 | ||
82bd4da7 | 2874 | r = extract_first_word(&pattern, &unit_name, NULL, EXTRACT_RETAIN_ESCAPE); |
4c9565ee RB |
2875 | if (r < 0) |
2876 | return r; | |
2877 | ||
2878 | /* We handle the instances logic when unit name is extracted */ | |
2879 | if (pattern) { | |
2880 | /* We only create instances when a rule of templated unit | |
2881 | * is seen. A rule like enable foo@.service a b c will | |
2882 | * result in an array of (a, b, c) as instance names */ | |
2883 | if (!unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) | |
2884 | return -EINVAL; | |
2885 | ||
2886 | instances = strv_split(pattern, WHITESPACE); | |
2887 | if (!instances) | |
2888 | return -ENOMEM; | |
2889 | ||
2890 | *out_instances = TAKE_PTR(instances); | |
2891 | } | |
2892 | ||
2893 | *out_unit_name = TAKE_PTR(unit_name); | |
2894 | ||
2895 | return 0; | |
2896 | } | |
2897 | ||
e0b8a238 | 2898 | static int presets_find_config(UnitFileScope scope, const char *root_dir, char ***files) { |
10fd1d46 ZJS |
2899 | static const char* const system_dirs[] = {CONF_PATHS("systemd/system-preset"), NULL}; |
2900 | static const char* const user_dirs[] = {CONF_PATHS_USR("systemd/user-preset"), NULL}; | |
f7767d76 | 2901 | const char* const* dirs; |
83096483 LP |
2902 | |
2903 | assert(scope >= 0); | |
2904 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
0ec0deaa | 2905 | |
a05294ff | 2906 | if (scope == UNIT_FILE_SYSTEM) |
10fd1d46 | 2907 | dirs = system_dirs; |
a05294ff | 2908 | else if (IN_SET(scope, UNIT_FILE_GLOBAL, UNIT_FILE_USER)) |
10fd1d46 | 2909 | dirs = user_dirs; |
a05294ff | 2910 | else |
264afce0 | 2911 | assert_not_reached("Invalid unit file scope"); |
83096483 | 2912 | |
f7767d76 | 2913 | return conf_files_list_strv(files, ".preset", root_dir, 0, dirs); |
e0b8a238 ZJS |
2914 | } |
2915 | ||
2916 | static int read_presets(UnitFileScope scope, const char *root_dir, Presets *presets) { | |
2917 | _cleanup_(presets_freep) Presets ps = {}; | |
2918 | size_t n_allocated = 0; | |
2919 | _cleanup_strv_free_ char **files = NULL; | |
2920 | char **p; | |
2921 | int r; | |
2922 | ||
2923 | assert(scope >= 0); | |
2924 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2925 | assert(presets); | |
2926 | ||
2927 | r = presets_find_config(scope, root_dir, &files); | |
83096483 LP |
2928 | if (r < 0) |
2929 | return r; | |
2930 | ||
cba2ef02 | 2931 | STRV_FOREACH(p, files) { |
7fd1b19b | 2932 | _cleanup_fclose_ FILE *f; |
d544d1a4 | 2933 | int n = 0; |
83096483 | 2934 | |
cba2ef02 | 2935 | f = fopen(*p, "re"); |
83096483 LP |
2936 | if (!f) { |
2937 | if (errno == ENOENT) | |
2938 | continue; | |
2939 | ||
d9e5e694 | 2940 | return -errno; |
83096483 LP |
2941 | } |
2942 | ||
bef77f37 LP |
2943 | for (;;) { |
2944 | _cleanup_free_ char *line = NULL; | |
8965d9f8 | 2945 | PresetRule rule = {}; |
0ec0deaa LP |
2946 | const char *parameter; |
2947 | char *l; | |
83096483 | 2948 | |
bef77f37 LP |
2949 | r = read_line(f, LONG_LINE_MAX, &line); |
2950 | if (r < 0) | |
2951 | return r; | |
2952 | if (r == 0) | |
2953 | break; | |
2954 | ||
83096483 | 2955 | l = strstrip(line); |
d544d1a4 | 2956 | n++; |
83096483 | 2957 | |
0ec0deaa LP |
2958 | if (isempty(l)) |
2959 | continue; | |
2960 | if (strchr(COMMENTS, *l)) | |
83096483 LP |
2961 | continue; |
2962 | ||
0ec0deaa LP |
2963 | parameter = first_word(l, "enable"); |
2964 | if (parameter) { | |
4c9565ee RB |
2965 | char *unit_name; |
2966 | char **instances = NULL; | |
d9e5e694 | 2967 | |
4c9565ee RB |
2968 | /* Unit_name will remain the same as parameter when no instances are specified */ |
2969 | r = split_pattern_into_name_and_instances(parameter, &unit_name, &instances); | |
2970 | if (r < 0) { | |
8ac3c9ab | 2971 | log_syntax(NULL, LOG_WARNING, *p, n, r, "Couldn't parse line '%s'. Ignoring.", line); |
4c9565ee RB |
2972 | continue; |
2973 | } | |
8965d9f8 AC |
2974 | |
2975 | rule = (PresetRule) { | |
4c9565ee | 2976 | .pattern = unit_name, |
8965d9f8 | 2977 | .action = PRESET_ENABLE, |
4c9565ee | 2978 | .instances = instances, |
8965d9f8 | 2979 | }; |
0ec0deaa | 2980 | } |
83096483 | 2981 | |
0ec0deaa LP |
2982 | parameter = first_word(l, "disable"); |
2983 | if (parameter) { | |
8965d9f8 | 2984 | char *pattern; |
d9e5e694 | 2985 | |
8965d9f8 AC |
2986 | pattern = strdup(parameter); |
2987 | if (!pattern) | |
2988 | return -ENOMEM; | |
2989 | ||
2990 | rule = (PresetRule) { | |
2991 | .pattern = pattern, | |
2992 | .action = PRESET_DISABLE, | |
2993 | }; | |
2994 | } | |
2995 | ||
2996 | if (rule.action) { | |
2997 | if (!GREEDY_REALLOC(ps.rules, n_allocated, ps.n_rules + 1)) | |
2998 | return -ENOMEM; | |
2999 | ||
3000 | ps.rules[ps.n_rules++] = rule; | |
0ec0deaa LP |
3001 | continue; |
3002 | } | |
3003 | ||
d544d1a4 | 3004 | log_syntax(NULL, LOG_WARNING, *p, n, 0, "Couldn't parse line '%s'. Ignoring.", line); |
83096483 | 3005 | } |
83096483 LP |
3006 | } |
3007 | ||
8965d9f8 AC |
3008 | *presets = ps; |
3009 | ps = (Presets){}; | |
3010 | ||
3011 | return 0; | |
3012 | } | |
3013 | ||
4c9565ee RB |
3014 | static int pattern_match_multiple_instances( |
3015 | const PresetRule rule, | |
3016 | const char *unit_name, | |
3017 | char ***ret) { | |
3018 | ||
3019 | _cleanup_free_ char *templated_name = NULL; | |
3020 | int r; | |
3021 | ||
3022 | /* If no ret is needed or the rule itself does not have instances | |
5238e957 | 3023 | * initialized, we return not matching */ |
4c9565ee RB |
3024 | if (!ret || !rule.instances) |
3025 | return 0; | |
3026 | ||
3027 | r = unit_name_template(unit_name, &templated_name); | |
3028 | if (r < 0) | |
3029 | return r; | |
3030 | if (!streq(rule.pattern, templated_name)) | |
3031 | return 0; | |
3032 | ||
3033 | /* Compose a list of specified instances when unit name is a template */ | |
3034 | if (unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) { | |
3035 | _cleanup_free_ char *prefix = NULL; | |
3036 | _cleanup_strv_free_ char **out_strv = NULL; | |
3037 | char **iter; | |
3038 | ||
3039 | r = unit_name_to_prefix(unit_name, &prefix); | |
3040 | if (r < 0) | |
3041 | return r; | |
3042 | ||
3043 | STRV_FOREACH(iter, rule.instances) { | |
3044 | _cleanup_free_ char *name = NULL; | |
3045 | r = unit_name_build(prefix, *iter, ".service", &name); | |
3046 | if (r < 0) | |
3047 | return r; | |
3048 | r = strv_extend(&out_strv, name); | |
3049 | if (r < 0) | |
3050 | return r; | |
3051 | } | |
3052 | ||
3053 | *ret = TAKE_PTR(out_strv); | |
3054 | return 1; | |
3055 | } else { | |
3056 | /* We now know the input unit name is an instance name */ | |
3057 | _cleanup_free_ char *instance_name = NULL; | |
3058 | ||
3059 | r = unit_name_to_instance(unit_name, &instance_name); | |
3060 | if (r < 0) | |
3061 | return r; | |
3062 | ||
3063 | if (strv_find(rule.instances, instance_name)) | |
3064 | return 1; | |
3065 | } | |
3066 | return 0; | |
3067 | } | |
3068 | ||
3069 | static int query_presets(const char *name, const Presets presets, char ***instance_name_list) { | |
8965d9f8 AC |
3070 | PresetAction action = PRESET_UNKNOWN; |
3071 | size_t i; | |
4c9565ee | 3072 | char **s; |
8965d9f8 AC |
3073 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
3074 | return -EINVAL; | |
3075 | ||
3076 | for (i = 0; i < presets.n_rules; i++) | |
4c9565ee RB |
3077 | if (pattern_match_multiple_instances(presets.rules[i], name, instance_name_list) > 0 || |
3078 | fnmatch(presets.rules[i].pattern, name, FNM_NOESCAPE) == 0) { | |
8965d9f8 AC |
3079 | action = presets.rules[i].action; |
3080 | break; | |
3081 | } | |
3082 | ||
3083 | switch (action) { | |
3084 | case PRESET_UNKNOWN: | |
3085 | log_debug("Preset files don't specify rule for %s. Enabling.", name); | |
3086 | return 1; | |
3087 | case PRESET_ENABLE: | |
4c9565ee RB |
3088 | if (instance_name_list && *instance_name_list) |
3089 | STRV_FOREACH(s, *instance_name_list) | |
3090 | log_debug("Preset files say enable %s.", *s); | |
3091 | else | |
3092 | log_debug("Preset files say enable %s.", name); | |
8965d9f8 AC |
3093 | return 1; |
3094 | case PRESET_DISABLE: | |
3095 | log_debug("Preset files say disable %s.", name); | |
3096 | return 0; | |
3097 | default: | |
3098 | assert_not_reached("invalid preset action"); | |
3099 | } | |
3100 | } | |
3101 | ||
3102 | int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char *name) { | |
3103 | _cleanup_(presets_freep) Presets presets = {}; | |
3104 | int r; | |
3105 | ||
3106 | r = read_presets(scope, root_dir, &presets); | |
3107 | if (r < 0) | |
3108 | return r; | |
3109 | ||
4c9565ee | 3110 | return query_presets(name, presets, NULL); |
83096483 LP |
3111 | } |
3112 | ||
0ec0deaa LP |
3113 | static int execute_preset( |
3114 | UnitFileScope scope, | |
3115 | InstallContext *plus, | |
3116 | InstallContext *minus, | |
3117 | const LookupPaths *paths, | |
1830ac51 | 3118 | const char *config_path, |
0ec0deaa LP |
3119 | char **files, |
3120 | UnitFilePresetMode mode, | |
1830ac51 | 3121 | bool force, |
0ec0deaa | 3122 | UnitFileChange **changes, |
da6053d0 | 3123 | size_t *n_changes) { |
0ec0deaa | 3124 | |
1830ac51 | 3125 | int r; |
0ec0deaa LP |
3126 | |
3127 | assert(plus); | |
3128 | assert(minus); | |
3129 | assert(paths); | |
1830ac51 | 3130 | assert(config_path); |
0ec0deaa LP |
3131 | |
3132 | if (mode != UNIT_FILE_PRESET_ENABLE_ONLY) { | |
3133 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
3134 | ||
1830ac51 MB |
3135 | r = install_context_mark_for_removal(scope, minus, paths, &remove_symlinks_to, config_path, changes, n_changes); |
3136 | if (r < 0) | |
3137 | return r; | |
0ec0deaa | 3138 | |
1830ac51 MB |
3139 | r = remove_marked_symlinks(remove_symlinks_to, config_path, paths, false, changes, n_changes); |
3140 | } else | |
3141 | r = 0; | |
0ec0deaa LP |
3142 | |
3143 | if (mode != UNIT_FILE_PRESET_DISABLE_ONLY) { | |
1830ac51 MB |
3144 | int q; |
3145 | ||
0ec0deaa | 3146 | /* Returns number of symlinks that where supposed to be installed. */ |
1830ac51 MB |
3147 | q = install_context_apply(scope, plus, paths, config_path, force, SEARCH_LOAD, changes, n_changes); |
3148 | if (r >= 0) { | |
3149 | if (q < 0) | |
3150 | r = q; | |
3151 | else | |
3152 | r += q; | |
3153 | } | |
0ec0deaa LP |
3154 | } |
3155 | ||
3156 | return r; | |
3157 | } | |
3158 | ||
3159 | static int preset_prepare_one( | |
3160 | UnitFileScope scope, | |
3161 | InstallContext *plus, | |
3162 | InstallContext *minus, | |
3163 | LookupPaths *paths, | |
af3d8113 | 3164 | const char *name, |
8965d9f8 | 3165 | Presets presets, |
af3d8113 | 3166 | UnitFileChange **changes, |
da6053d0 | 3167 | size_t *n_changes) { |
0ec0deaa | 3168 | |
11e11fd5 | 3169 | _cleanup_(install_context_done) InstallContext tmp = {}; |
4c9565ee | 3170 | _cleanup_strv_free_ char **instance_name_list = NULL; |
0ec0deaa LP |
3171 | UnitFileInstallInfo *i; |
3172 | int r; | |
3173 | ||
11e11fd5 | 3174 | if (install_info_find(plus, name) || install_info_find(minus, name)) |
0ec0deaa LP |
3175 | return 0; |
3176 | ||
59108fbe ZJS |
3177 | r = install_info_discover(scope, &tmp, paths, name, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3178 | &i, changes, n_changes); | |
11e11fd5 ZJS |
3179 | if (r < 0) |
3180 | return r; | |
3181 | if (!streq(name, i->name)) { | |
10d67460 | 3182 | log_debug("Skipping %s because it is an alias for %s.", name, i->name); |
11e11fd5 ZJS |
3183 | return 0; |
3184 | } | |
3185 | ||
4c9565ee | 3186 | r = query_presets(name, presets, &instance_name_list); |
0ec0deaa LP |
3187 | if (r < 0) |
3188 | return r; | |
3189 | ||
3190 | if (r > 0) { | |
4c9565ee RB |
3191 | if (instance_name_list) { |
3192 | char **s; | |
3193 | STRV_FOREACH(s, instance_name_list) { | |
1e475a0a RB |
3194 | r = install_info_discover_and_check(scope, plus, paths, *s, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3195 | &i, changes, n_changes); | |
4c9565ee RB |
3196 | if (r < 0) |
3197 | return r; | |
3198 | } | |
3199 | } else { | |
1e475a0a RB |
3200 | r = install_info_discover_and_check(scope, plus, paths, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3201 | &i, changes, n_changes); | |
4c9565ee RB |
3202 | if (r < 0) |
3203 | return r; | |
3204 | } | |
0ec0deaa | 3205 | |
0ec0deaa | 3206 | } else |
59108fbe ZJS |
3207 | r = install_info_discover(scope, minus, paths, name, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3208 | &i, changes, n_changes); | |
0ec0deaa LP |
3209 | |
3210 | return r; | |
3211 | } | |
3212 | ||
83096483 LP |
3213 | int unit_file_preset( |
3214 | UnitFileScope scope, | |
b3796dd8 | 3215 | UnitFileFlags flags, |
83096483 | 3216 | const char *root_dir, |
7195aa42 | 3217 | char **files, |
d309c1c3 | 3218 | UnitFilePresetMode mode, |
83096483 | 3219 | UnitFileChange **changes, |
da6053d0 | 3220 | size_t *n_changes) { |
83096483 | 3221 | |
59ccf93d | 3222 | _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; |
8e766630 | 3223 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
8965d9f8 | 3224 | _cleanup_(presets_freep) Presets presets = {}; |
1830ac51 | 3225 | const char *config_path; |
da39f6a6 | 3226 | char **i; |
0ec0deaa | 3227 | int r; |
83096483 LP |
3228 | |
3229 | assert(scope >= 0); | |
3230 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
86bbe5bf | 3231 | assert(mode < _UNIT_FILE_PRESET_MAX); |
83096483 | 3232 | |
4943d143 | 3233 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
83096483 LP |
3234 | if (r < 0) |
3235 | return r; | |
3236 | ||
1830ac51 MB |
3237 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
3238 | if (!config_path) | |
3239 | return -ENXIO; | |
3240 | ||
8965d9f8 AC |
3241 | r = read_presets(scope, root_dir, &presets); |
3242 | if (r < 0) | |
3243 | return r; | |
83096483 | 3244 | |
8965d9f8 | 3245 | STRV_FOREACH(i, files) { |
ff56349d | 3246 | r = preset_prepare_one(scope, &plus, &minus, &paths, *i, presets, changes, n_changes); |
83096483 | 3247 | if (r < 0) |
d9e5e694 | 3248 | return r; |
83096483 LP |
3249 | } |
3250 | ||
1830ac51 | 3251 | return execute_preset(scope, &plus, &minus, &paths, config_path, files, mode, !!(flags & UNIT_FILE_FORCE), changes, n_changes); |
d309c1c3 LP |
3252 | } |
3253 | ||
3254 | int unit_file_preset_all( | |
3255 | UnitFileScope scope, | |
b3796dd8 | 3256 | UnitFileFlags flags, |
d309c1c3 LP |
3257 | const char *root_dir, |
3258 | UnitFilePresetMode mode, | |
d309c1c3 | 3259 | UnitFileChange **changes, |
da6053d0 | 3260 | size_t *n_changes) { |
d309c1c3 | 3261 | |
59ccf93d | 3262 | _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; |
8e766630 | 3263 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
8965d9f8 | 3264 | _cleanup_(presets_freep) Presets presets = {}; |
1830ac51 | 3265 | const char *config_path = NULL; |
d309c1c3 | 3266 | char **i; |
0ec0deaa | 3267 | int r; |
d309c1c3 LP |
3268 | |
3269 | assert(scope >= 0); | |
3270 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
86bbe5bf | 3271 | assert(mode < _UNIT_FILE_PRESET_MAX); |
d309c1c3 | 3272 | |
4943d143 | 3273 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
d309c1c3 LP |
3274 | if (r < 0) |
3275 | return r; | |
3276 | ||
1830ac51 MB |
3277 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
3278 | if (!config_path) | |
3279 | return -ENXIO; | |
3280 | ||
8965d9f8 AC |
3281 | r = read_presets(scope, root_dir, &presets); |
3282 | if (r < 0) | |
3283 | return r; | |
3284 | ||
a3c4eb07 | 3285 | STRV_FOREACH(i, paths.search_path) { |
d309c1c3 | 3286 | _cleanup_closedir_ DIR *d = NULL; |
d25e100b | 3287 | struct dirent *de; |
d309c1c3 | 3288 | |
401017e0 | 3289 | d = opendir(*i); |
d309c1c3 LP |
3290 | if (!d) { |
3291 | if (errno == ENOENT) | |
3292 | continue; | |
3293 | ||
3294 | return -errno; | |
3295 | } | |
3296 | ||
d25e100b | 3297 | FOREACH_DIRENT(de, d, return -errno) { |
1830ac51 | 3298 | |
7410616c | 3299 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
d309c1c3 LP |
3300 | continue; |
3301 | ||
3302 | dirent_ensure_type(d, de); | |
3303 | ||
0ec0deaa | 3304 | if (!IN_SET(de->d_type, DT_LNK, DT_REG)) |
d309c1c3 LP |
3305 | continue; |
3306 | ||
af3d8113 | 3307 | /* we don't pass changes[] in, because we want to handle errors on our own */ |
ff56349d | 3308 | r = preset_prepare_one(scope, &plus, &minus, &paths, de->d_name, presets, NULL, 0); |
9a0a413a ZJS |
3309 | if (r == -ERFKILL) |
3310 | r = unit_file_changes_add(changes, n_changes, | |
3311 | UNIT_FILE_IS_MASKED, de->d_name, NULL); | |
893275df ZJS |
3312 | else if (r == -ENOLINK) |
3313 | r = unit_file_changes_add(changes, n_changes, | |
3314 | UNIT_FILE_IS_DANGLING, de->d_name, NULL); | |
26421228 LP |
3315 | else if (r == -EADDRNOTAVAIL) /* Ignore generated/transient units when applying preset */ |
3316 | continue; | |
d309c1c3 LP |
3317 | if (r < 0) |
3318 | return r; | |
3319 | } | |
3320 | } | |
3321 | ||
1830ac51 | 3322 | return execute_preset(scope, &plus, &minus, &paths, config_path, NULL, mode, !!(flags & UNIT_FILE_FORCE), changes, n_changes); |
83096483 LP |
3323 | } |
3324 | ||
59ccf93d LP |
3325 | static void unit_file_list_free_one(UnitFileList *f) { |
3326 | if (!f) | |
d9e5e694 ZJS |
3327 | return; |
3328 | ||
59ccf93d LP |
3329 | free(f->path); |
3330 | free(f); | |
d9e5e694 | 3331 | } |
59ccf93d | 3332 | |
0ec0deaa | 3333 | Hashmap* unit_file_list_free(Hashmap *h) { |
224b0e7a | 3334 | return hashmap_free_with_destructor(h, unit_file_list_free_one); |
0ec0deaa LP |
3335 | } |
3336 | ||
59ccf93d | 3337 | DEFINE_TRIVIAL_CLEANUP_FUNC(UnitFileList*, unit_file_list_free_one); |
d9e5e694 | 3338 | |
83096483 LP |
3339 | int unit_file_get_list( |
3340 | UnitFileScope scope, | |
3341 | const char *root_dir, | |
313fe66f | 3342 | Hashmap *h, |
3343 | char **states, | |
3344 | char **patterns) { | |
83096483 | 3345 | |
8e766630 | 3346 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
d9e5e694 | 3347 | char **i; |
83096483 LP |
3348 | int r; |
3349 | ||
3350 | assert(scope >= 0); | |
3351 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
3352 | assert(h); | |
3353 | ||
4943d143 | 3354 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
83096483 LP |
3355 | if (r < 0) |
3356 | return r; | |
3357 | ||
a3c4eb07 | 3358 | STRV_FOREACH(i, paths.search_path) { |
da39f6a6 | 3359 | _cleanup_closedir_ DIR *d = NULL; |
d25e100b | 3360 | struct dirent *de; |
83096483 | 3361 | |
401017e0 | 3362 | d = opendir(*i); |
83096483 LP |
3363 | if (!d) { |
3364 | if (errno == ENOENT) | |
3365 | continue; | |
a1feacf7 | 3366 | if (IN_SET(errno, ENOTDIR, EACCES)) { |
25f027c5 | 3367 | log_debug_errno(errno, "Failed to open \"%s\": %m", *i); |
a1feacf7 ZJS |
3368 | continue; |
3369 | } | |
83096483 | 3370 | |
d9e5e694 | 3371 | return -errno; |
83096483 LP |
3372 | } |
3373 | ||
d25e100b | 3374 | FOREACH_DIRENT(de, d, return -errno) { |
59ccf93d | 3375 | _cleanup_(unit_file_list_free_onep) UnitFileList *f = NULL; |
83096483 | 3376 | |
7410616c | 3377 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
83096483 LP |
3378 | continue; |
3379 | ||
313fe66f | 3380 | if (!strv_fnmatch_or_empty(patterns, de->d_name, FNM_NOESCAPE)) |
3381 | continue; | |
3382 | ||
83096483 LP |
3383 | if (hashmap_get(h, de->d_name)) |
3384 | continue; | |
3385 | ||
da39f6a6 | 3386 | dirent_ensure_type(d, de); |
83096483 | 3387 | |
da39f6a6 | 3388 | if (!IN_SET(de->d_type, DT_LNK, DT_REG)) |
83096483 LP |
3389 | continue; |
3390 | ||
3391 | f = new0(UnitFileList, 1); | |
d9e5e694 ZJS |
3392 | if (!f) |
3393 | return -ENOMEM; | |
83096483 | 3394 | |
401017e0 | 3395 | f->path = path_make_absolute(de->d_name, *i); |
d9e5e694 ZJS |
3396 | if (!f->path) |
3397 | return -ENOMEM; | |
83096483 | 3398 | |
401017e0 | 3399 | r = unit_file_lookup_state(scope, &paths, de->d_name, &f->state); |
d9e5e694 | 3400 | if (r < 0) |
0ec0deaa | 3401 | f->state = UNIT_FILE_BAD; |
81fc054d | 3402 | |
313fe66f | 3403 | if (!strv_isempty(states) && |
3404 | !strv_contains(states, unit_file_state_to_string(f->state))) | |
3405 | continue; | |
3406 | ||
2b6bf07d | 3407 | r = hashmap_put(h, basename(f->path), f); |
d9e5e694 ZJS |
3408 | if (r < 0) |
3409 | return r; | |
0ec0deaa | 3410 | |
d9e5e694 | 3411 | f = NULL; /* prevent cleanup */ |
83096483 LP |
3412 | } |
3413 | } | |
3414 | ||
77cd2c87 | 3415 | return 0; |
83096483 LP |
3416 | } |
3417 | ||
3418 | static const char* const unit_file_state_table[_UNIT_FILE_STATE_MAX] = { | |
3419 | [UNIT_FILE_ENABLED] = "enabled", | |
771faa9a | 3420 | [UNIT_FILE_ENABLED_RUNTIME] = "enabled-runtime", |
83096483 LP |
3421 | [UNIT_FILE_LINKED] = "linked", |
3422 | [UNIT_FILE_LINKED_RUNTIME] = "linked-runtime", | |
3423 | [UNIT_FILE_MASKED] = "masked", | |
3424 | [UNIT_FILE_MASKED_RUNTIME] = "masked-runtime", | |
3425 | [UNIT_FILE_STATIC] = "static", | |
b5b46d59 | 3426 | [UNIT_FILE_DISABLED] = "disabled", |
aedd4012 | 3427 | [UNIT_FILE_INDIRECT] = "indirect", |
f4139308 | 3428 | [UNIT_FILE_GENERATED] = "generated", |
e4fca67f | 3429 | [UNIT_FILE_TRANSIENT] = "transient", |
0ec0deaa | 3430 | [UNIT_FILE_BAD] = "bad", |
83096483 LP |
3431 | }; |
3432 | ||
3433 | DEFINE_STRING_TABLE_LOOKUP(unit_file_state, UnitFileState); | |
c0576cd6 LP |
3434 | |
3435 | static const char* const unit_file_change_type_table[_UNIT_FILE_CHANGE_TYPE_MAX] = { | |
3436 | [UNIT_FILE_SYMLINK] = "symlink", | |
3437 | [UNIT_FILE_UNLINK] = "unlink", | |
9a0a413a | 3438 | [UNIT_FILE_IS_MASKED] = "masked", |
893275df | 3439 | [UNIT_FILE_IS_DANGLING] = "dangling", |
c0576cd6 LP |
3440 | }; |
3441 | ||
3442 | DEFINE_STRING_TABLE_LOOKUP(unit_file_change_type, UnitFileChangeType); | |
d309c1c3 | 3443 | |
86bbe5bf | 3444 | static const char* const unit_file_preset_mode_table[_UNIT_FILE_PRESET_MAX] = { |
d309c1c3 LP |
3445 | [UNIT_FILE_PRESET_FULL] = "full", |
3446 | [UNIT_FILE_PRESET_ENABLE_ONLY] = "enable-only", | |
3447 | [UNIT_FILE_PRESET_DISABLE_ONLY] = "disable-only", | |
3448 | }; | |
3449 | ||
3450 | DEFINE_STRING_TABLE_LOOKUP(unit_file_preset_mode, UnitFilePresetMode); |