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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; |
0ec0deaa | 108 | char **i; |
8f294b45 LP |
109 | |
110 | assert(path); | |
111 | ||
5f311f8c LP |
112 | parent = dirname_malloc(path); |
113 | if (!parent) | |
114 | return -ENOMEM; | |
8f294b45 | 115 | |
32c0ed7b | 116 | STRV_FOREACH(i, p->search_path) |
0ec0deaa LP |
117 | if (path_equal(parent, *i)) |
118 | return true; | |
119 | ||
120 | return false; | |
8f294b45 LP |
121 | } |
122 | ||
401017e0 | 123 | static const char* skip_root(const LookupPaths *p, const char *path) { |
8f9364f9 | 124 | char *e; |
401017e0 | 125 | |
8f9364f9 LP |
126 | assert(p); |
127 | assert(path); | |
401017e0 | 128 | |
8f9364f9 LP |
129 | if (!p->root_dir) |
130 | return path; | |
401017e0 | 131 | |
8f9364f9 LP |
132 | e = path_startswith(path, p->root_dir); |
133 | if (!e) | |
134 | return NULL; | |
135 | ||
136 | /* Make sure the returned path starts with a slash */ | |
137 | if (e[0] != '/') { | |
138 | if (e == path || e[-1] != '/') | |
139 | return NULL; | |
401017e0 | 140 | |
8f9364f9 | 141 | e--; |
401017e0 LP |
142 | } |
143 | ||
8f9364f9 | 144 | return e; |
401017e0 LP |
145 | } |
146 | ||
f4dc1e65 | 147 | static int path_is_generator(const LookupPaths *p, const char *path) { |
f4139308 LP |
148 | _cleanup_free_ char *parent = NULL; |
149 | ||
e1c5c2b0 | 150 | assert(p); |
f4139308 LP |
151 | assert(path); |
152 | ||
153 | parent = dirname_malloc(path); | |
154 | if (!parent) | |
155 | return -ENOMEM; | |
156 | ||
24737c29 ZJS |
157 | return path_equal_ptr(parent, p->generator) || |
158 | path_equal_ptr(parent, p->generator_early) || | |
159 | path_equal_ptr(parent, p->generator_late); | |
f4139308 LP |
160 | } |
161 | ||
e4fca67f LP |
162 | static int path_is_transient(const LookupPaths *p, const char *path) { |
163 | _cleanup_free_ char *parent = NULL; | |
164 | ||
165 | assert(p); | |
166 | assert(path); | |
167 | ||
168 | parent = dirname_malloc(path); | |
169 | if (!parent) | |
170 | return -ENOMEM; | |
171 | ||
24737c29 | 172 | return path_equal_ptr(parent, p->transient); |
e4fca67f LP |
173 | } |
174 | ||
344ca755 | 175 | static int path_is_control(const LookupPaths *p, const char *path) { |
e1c5c2b0 | 176 | _cleanup_free_ char *parent = NULL; |
0ec0deaa | 177 | |
e1c5c2b0 | 178 | assert(p); |
0ec0deaa LP |
179 | assert(path); |
180 | ||
344ca755 LP |
181 | parent = dirname_malloc(path); |
182 | if (!parent) | |
183 | return -ENOMEM; | |
0ec0deaa | 184 | |
24737c29 ZJS |
185 | return path_equal_ptr(parent, p->persistent_control) || |
186 | path_equal_ptr(parent, p->runtime_control); | |
344ca755 LP |
187 | } |
188 | ||
dfead90d | 189 | static int path_is_config(const LookupPaths *p, const char *path, bool check_parent) { |
344ca755 LP |
190 | _cleanup_free_ char *parent = NULL; |
191 | ||
192 | assert(p); | |
193 | assert(path); | |
194 | ||
d7604756 ZJS |
195 | /* Note that we do *not* have generic checks for /etc or /run in place, since with |
196 | * them we couldn't discern configuration from transient or generated units */ | |
0ec0deaa | 197 | |
dfead90d LP |
198 | if (check_parent) { |
199 | parent = dirname_malloc(path); | |
200 | if (!parent) | |
201 | return -ENOMEM; | |
202 | ||
203 | path = parent; | |
204 | } | |
0ec0deaa | 205 | |
dfead90d LP |
206 | return path_equal_ptr(path, p->persistent_config) || |
207 | path_equal_ptr(path, p->runtime_config); | |
0ec0deaa LP |
208 | } |
209 | ||
dfead90d | 210 | static int path_is_runtime(const LookupPaths *p, const char *path, bool check_parent) { |
385eb996 | 211 | _cleanup_free_ char *parent = NULL; |
401017e0 | 212 | const char *rpath; |
385eb996 LP |
213 | |
214 | assert(p); | |
215 | assert(path); | |
216 | ||
d7604756 ZJS |
217 | /* Everything in /run is considered runtime. On top of that we also add |
218 | * explicit checks for the various runtime directories, as safety net. */ | |
344ca755 | 219 | |
401017e0 LP |
220 | rpath = skip_root(p, path); |
221 | if (rpath && path_startswith(rpath, "/run")) | |
385eb996 LP |
222 | return true; |
223 | ||
dfead90d LP |
224 | if (check_parent) { |
225 | parent = dirname_malloc(path); | |
226 | if (!parent) | |
227 | return -ENOMEM; | |
385eb996 | 228 | |
dfead90d LP |
229 | path = parent; |
230 | } | |
231 | ||
232 | return path_equal_ptr(path, p->runtime_config) || | |
233 | path_equal_ptr(path, p->generator) || | |
234 | path_equal_ptr(path, p->generator_early) || | |
235 | path_equal_ptr(path, p->generator_late) || | |
236 | path_equal_ptr(path, p->transient) || | |
237 | path_equal_ptr(path, p->runtime_control); | |
344ca755 LP |
238 | } |
239 | ||
240 | static int path_is_vendor(const LookupPaths *p, const char *path) { | |
241 | const char *rpath; | |
242 | ||
243 | assert(p); | |
244 | assert(path); | |
245 | ||
246 | rpath = skip_root(p, path); | |
247 | if (!rpath) | |
248 | return 0; | |
249 | ||
250 | if (path_startswith(rpath, "/usr")) | |
251 | return true; | |
252 | ||
349cc4a5 | 253 | #if HAVE_SPLIT_USR |
344ca755 LP |
254 | if (path_startswith(rpath, "/lib")) |
255 | return true; | |
256 | #endif | |
257 | ||
258 | return path_equal(rpath, SYSTEM_DATA_UNIT_PATH); | |
385eb996 LP |
259 | } |
260 | ||
0ec0deaa LP |
261 | int unit_file_changes_add( |
262 | UnitFileChange **changes, | |
da6053d0 | 263 | size_t *n_changes, |
0ec0deaa LP |
264 | UnitFileChangeType type, |
265 | const char *path, | |
266 | const char *source) { | |
267 | ||
12bf0ae4 | 268 | _cleanup_free_ char *p = NULL, *s = NULL; |
0ec0deaa | 269 | UnitFileChange *c; |
0ec0deaa LP |
270 | |
271 | assert(path); | |
272 | assert(!changes == !n_changes); | |
273 | ||
274 | if (!changes) | |
275 | return 0; | |
276 | ||
62d74c78 | 277 | c = reallocarray(*changes, *n_changes + 1, sizeof(UnitFileChange)); |
0ec0deaa LP |
278 | if (!c) |
279 | return -ENOMEM; | |
0ec0deaa | 280 | *changes = c; |
0ec0deaa | 281 | |
12bf0ae4 ZJS |
282 | p = strdup(path); |
283 | if (source) | |
284 | s = strdup(source); | |
0ec0deaa | 285 | |
12bf0ae4 ZJS |
286 | if (!p || (source && !s)) |
287 | return -ENOMEM; | |
0ec0deaa | 288 | |
858d36c1 | 289 | path_simplify(p, false); |
12bf0ae4 | 290 | if (s) |
858d36c1 | 291 | path_simplify(s, false); |
0ec0deaa | 292 | |
12bf0ae4 ZJS |
293 | c[*n_changes] = (UnitFileChange) { type, p, s }; |
294 | p = s = NULL; | |
295 | (*n_changes) ++; | |
0ec0deaa LP |
296 | return 0; |
297 | } | |
298 | ||
da6053d0 LP |
299 | void unit_file_changes_free(UnitFileChange *changes, size_t n_changes) { |
300 | size_t i; | |
0ec0deaa LP |
301 | |
302 | assert(changes || n_changes == 0); | |
303 | ||
0ec0deaa LP |
304 | for (i = 0; i < n_changes; i++) { |
305 | free(changes[i].path); | |
306 | free(changes[i].source); | |
307 | } | |
308 | ||
309 | free(changes); | |
310 | } | |
311 | ||
da6053d0 LP |
312 | void unit_file_dump_changes(int r, const char *verb, const UnitFileChange *changes, size_t n_changes, bool quiet) { |
313 | size_t i; | |
af3d8113 ZJS |
314 | bool logged = false; |
315 | ||
316 | assert(changes || n_changes == 0); | |
317 | /* If verb is not specified, errors are not allowed! */ | |
318 | assert(verb || r >= 0); | |
319 | ||
320 | for (i = 0; i < n_changes; i++) { | |
321 | assert(verb || changes[i].type >= 0); | |
322 | ||
323 | switch(changes[i].type) { | |
324 | case UNIT_FILE_SYMLINK: | |
325 | if (!quiet) | |
a760db24 ZJS |
326 | log_info("Created symlink %s %s %s.", |
327 | changes[i].path, | |
9a6f746f | 328 | special_glyph(SPECIAL_GLYPH_ARROW), |
a760db24 | 329 | changes[i].source); |
af3d8113 ZJS |
330 | break; |
331 | case UNIT_FILE_UNLINK: | |
332 | if (!quiet) | |
333 | log_info("Removed %s.", changes[i].path); | |
334 | break; | |
335 | case UNIT_FILE_IS_MASKED: | |
336 | if (!quiet) | |
337 | log_info("Unit %s is masked, ignoring.", changes[i].path); | |
338 | break; | |
893275df ZJS |
339 | case UNIT_FILE_IS_DANGLING: |
340 | if (!quiet) | |
341 | log_info("Unit %s is an alias to a unit that is not present, ignoring.", | |
342 | changes[i].path); | |
343 | break; | |
af3d8113 ZJS |
344 | case -EEXIST: |
345 | if (changes[i].source) | |
346 | log_error_errno(changes[i].type, | |
347 | "Failed to %s unit, file %s already exists and is a symlink to %s.", | |
348 | verb, changes[i].path, changes[i].source); | |
349 | else | |
350 | log_error_errno(changes[i].type, | |
351 | "Failed to %s unit, file %s already exists.", | |
352 | verb, changes[i].path); | |
353 | logged = true; | |
354 | break; | |
355 | case -ERFKILL: | |
356 | log_error_errno(changes[i].type, "Failed to %s unit, unit %s is masked.", | |
357 | verb, changes[i].path); | |
358 | logged = true; | |
359 | break; | |
360 | case -EADDRNOTAVAIL: | |
361 | log_error_errno(changes[i].type, "Failed to %s unit, unit %s is transient or generated.", | |
362 | verb, changes[i].path); | |
363 | logged = true; | |
364 | break; | |
d7ceaf72 ZJS |
365 | case -EUCLEAN: |
366 | log_error_errno(changes[i].type, | |
367 | "Failed to %s unit, \"%s\" is not a valid unit name.", | |
368 | verb, changes[i].path); | |
369 | logged = true; | |
370 | break; | |
af3d8113 ZJS |
371 | case -ELOOP: |
372 | log_error_errno(changes[i].type, "Failed to %s unit, refusing to operate on linked unit file %s", | |
373 | verb, changes[i].path); | |
374 | logged = true; | |
375 | break; | |
637d6e5b LP |
376 | |
377 | case -ENOENT: | |
378 | log_error_errno(changes[i].type, "Failed to %s unit, unit %s does not exist.", verb, changes[i].path); | |
379 | logged = true; | |
380 | break; | |
381 | ||
af3d8113 ZJS |
382 | default: |
383 | assert(changes[i].type < 0); | |
384 | log_error_errno(changes[i].type, "Failed to %s unit, file %s: %m.", | |
385 | verb, changes[i].path); | |
386 | logged = true; | |
387 | } | |
388 | } | |
389 | ||
390 | if (r < 0 && !logged) | |
391 | log_error_errno(r, "Failed to %s: %m.", verb); | |
392 | } | |
393 | ||
25ea9277 ZJS |
394 | /** |
395 | * Checks if two paths or symlinks from wd are the same, when root is the root of the filesystem. | |
396 | * wc should be the full path in the host file system. | |
397 | */ | |
398 | static bool chroot_symlinks_same(const char *root, const char *wd, const char *a, const char *b) { | |
399 | assert(path_is_absolute(wd)); | |
400 | ||
401 | /* This will give incorrect results if the paths are relative and go outside | |
402 | * of the chroot. False negatives are possible. */ | |
403 | ||
ae9efab7 ZJS |
404 | if (!root) |
405 | root = "/"; | |
406 | ||
25ea9277 ZJS |
407 | a = strjoina(path_is_absolute(a) ? root : wd, "/", a); |
408 | b = strjoina(path_is_absolute(b) ? root : wd, "/", b); | |
e3f791a2 | 409 | return path_equal_or_files_same(a, b, 0); |
25ea9277 ZJS |
410 | } |
411 | ||
0ec0deaa | 412 | static int create_symlink( |
60bec8e4 | 413 | const LookupPaths *paths, |
0ec0deaa LP |
414 | const char *old_path, |
415 | const char *new_path, | |
416 | bool force, | |
417 | UnitFileChange **changes, | |
da6053d0 | 418 | size_t *n_changes) { |
0ec0deaa | 419 | |
25ea9277 | 420 | _cleanup_free_ char *dest = NULL, *dirname = NULL; |
60bec8e4 | 421 | const char *rp; |
0ec0deaa LP |
422 | int r; |
423 | ||
424 | assert(old_path); | |
425 | assert(new_path); | |
426 | ||
60bec8e4 ZJS |
427 | rp = skip_root(paths, old_path); |
428 | if (rp) | |
429 | old_path = rp; | |
430 | ||
0ec0deaa LP |
431 | /* Actually create a symlink, and remember that we did. Is |
432 | * smart enough to check if there's already a valid symlink in | |
85158303 ZJS |
433 | * place. |
434 | * | |
435 | * Returns 1 if a symlink was created or already exists and points to | |
436 | * the right place, or negative on error. | |
437 | */ | |
0ec0deaa LP |
438 | |
439 | mkdir_parents_label(new_path, 0755); | |
440 | ||
441 | if (symlink(old_path, new_path) >= 0) { | |
442 | unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path); | |
3de15214 | 443 | return 1; |
0ec0deaa LP |
444 | } |
445 | ||
af3d8113 ZJS |
446 | if (errno != EEXIST) { |
447 | unit_file_changes_add(changes, n_changes, -errno, new_path, NULL); | |
0ec0deaa | 448 | return -errno; |
af3d8113 | 449 | } |
0ec0deaa LP |
450 | |
451 | r = readlink_malloc(new_path, &dest); | |
7d782f26 ZJS |
452 | if (r < 0) { |
453 | /* translate EINVAL (non-symlink exists) to EEXIST */ | |
454 | if (r == -EINVAL) | |
455 | r = -EEXIST; | |
456 | ||
457 | unit_file_changes_add(changes, n_changes, r, new_path, NULL); | |
0ec0deaa | 458 | return r; |
7d782f26 | 459 | } |
0ec0deaa | 460 | |
25ea9277 ZJS |
461 | dirname = dirname_malloc(new_path); |
462 | if (!dirname) | |
463 | return -ENOMEM; | |
464 | ||
3e8d06d9 ZJS |
465 | if (chroot_symlinks_same(paths->root_dir, dirname, dest, old_path)) { |
466 | log_debug("Symlink %s → %s already exists", new_path, dest); | |
85158303 | 467 | return 1; |
3e8d06d9 | 468 | } |
0ec0deaa | 469 | |
af3d8113 ZJS |
470 | if (!force) { |
471 | unit_file_changes_add(changes, n_changes, -EEXIST, new_path, dest); | |
0ec0deaa | 472 | return -EEXIST; |
af3d8113 | 473 | } |
0ec0deaa LP |
474 | |
475 | r = symlink_atomic(old_path, new_path); | |
7d782f26 ZJS |
476 | if (r < 0) { |
477 | unit_file_changes_add(changes, n_changes, r, new_path, NULL); | |
0ec0deaa | 478 | return r; |
7d782f26 | 479 | } |
0ec0deaa LP |
480 | |
481 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, new_path, NULL); | |
482 | unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path); | |
483 | ||
3de15214 | 484 | return 1; |
0ec0deaa LP |
485 | } |
486 | ||
83096483 LP |
487 | static int mark_symlink_for_removal( |
488 | Set **remove_symlinks_to, | |
489 | const char *p) { | |
490 | ||
491 | char *n; | |
492 | int r; | |
493 | ||
494 | assert(p); | |
495 | ||
548f6937 | 496 | r = set_ensure_allocated(remove_symlinks_to, &path_hash_ops); |
83096483 LP |
497 | if (r < 0) |
498 | return r; | |
499 | ||
500 | n = strdup(p); | |
501 | if (!n) | |
502 | return -ENOMEM; | |
503 | ||
858d36c1 | 504 | path_simplify(n, false); |
83096483 | 505 | |
ef42202a | 506 | r = set_consume(*remove_symlinks_to, n); |
d25e100b LP |
507 | if (r == -EEXIST) |
508 | return 0; | |
ef42202a | 509 | if (r < 0) |
d25e100b | 510 | return r; |
83096483 | 511 | |
0ec0deaa | 512 | return 1; |
83096483 LP |
513 | } |
514 | ||
515 | static int remove_marked_symlinks_fd( | |
516 | Set *remove_symlinks_to, | |
517 | int fd, | |
518 | const char *path, | |
519 | const char *config_path, | |
401017e0 | 520 | const LookupPaths *lp, |
3b3557c4 | 521 | bool dry_run, |
0ec0deaa | 522 | bool *restart, |
83096483 | 523 | UnitFileChange **changes, |
da6053d0 | 524 | size_t *n_changes) { |
83096483 | 525 | |
7fd1b19b | 526 | _cleanup_closedir_ DIR *d = NULL; |
d25e100b | 527 | struct dirent *de; |
bcafe923 | 528 | int r = 0; |
83096483 LP |
529 | |
530 | assert(remove_symlinks_to); | |
531 | assert(fd >= 0); | |
532 | assert(path); | |
533 | assert(config_path); | |
401017e0 | 534 | assert(lp); |
0ec0deaa | 535 | assert(restart); |
83096483 LP |
536 | |
537 | d = fdopendir(fd); | |
538 | if (!d) { | |
03e334a1 | 539 | safe_close(fd); |
83096483 LP |
540 | return -errno; |
541 | } | |
542 | ||
543 | rewinddir(d); | |
544 | ||
d25e100b | 545 | FOREACH_DIRENT(de, d, return -errno) { |
83096483 LP |
546 | |
547 | dirent_ensure_type(d, de); | |
548 | ||
549 | if (de->d_type == DT_DIR) { | |
7fd1b19b | 550 | _cleanup_free_ char *p = NULL; |
d25e100b | 551 | int nfd, q; |
83096483 LP |
552 | |
553 | nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
554 | if (nfd < 0) { | |
555 | if (errno == ENOENT) | |
556 | continue; | |
557 | ||
558 | if (r == 0) | |
559 | r = -errno; | |
560 | continue; | |
561 | } | |
562 | ||
563 | p = path_make_absolute(de->d_name, path); | |
564 | if (!p) { | |
03e334a1 | 565 | safe_close(nfd); |
d9e5e694 | 566 | return -ENOMEM; |
83096483 LP |
567 | } |
568 | ||
569 | /* This will close nfd, regardless whether it succeeds or not */ | |
3b3557c4 | 570 | q = remove_marked_symlinks_fd(remove_symlinks_to, nfd, p, config_path, lp, dry_run, restart, changes, n_changes); |
bcafe923 | 571 | if (q < 0 && r == 0) |
83096483 LP |
572 | r = q; |
573 | ||
574 | } else if (de->d_type == DT_LNK) { | |
7fd1b19b | 575 | _cleanup_free_ char *p = NULL, *dest = NULL; |
401017e0 | 576 | const char *rp; |
83096483 | 577 | bool found; |
0ec0deaa | 578 | int q; |
83096483 | 579 | |
7410616c | 580 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
bcafe923 LP |
581 | continue; |
582 | ||
83096483 | 583 | p = path_make_absolute(de->d_name, path); |
d9e5e694 ZJS |
584 | if (!p) |
585 | return -ENOMEM; | |
858d36c1 | 586 | path_simplify(p, false); |
83096483 | 587 | |
0ec0deaa | 588 | q = readlink_malloc(p, &dest); |
401017e0 LP |
589 | if (q == -ENOENT) |
590 | continue; | |
83096483 | 591 | if (q < 0) { |
83096483 LP |
592 | if (r == 0) |
593 | r = q; | |
594 | continue; | |
595 | } | |
596 | ||
401017e0 LP |
597 | /* We remove all links pointing to a file or path that is marked, as well as all files sharing |
598 | * the same name as a file that is marked. */ | |
0ec0deaa | 599 | |
596fc263 | 600 | found = set_contains(remove_symlinks_to, dest) || |
0ec0deaa LP |
601 | set_contains(remove_symlinks_to, basename(dest)) || |
602 | set_contains(remove_symlinks_to, de->d_name); | |
83096483 | 603 | |
1dacfd2a LP |
604 | if (!found) |
605 | continue; | |
83096483 | 606 | |
3b3557c4 JS |
607 | if (!dry_run) { |
608 | if (unlinkat(fd, de->d_name, 0) < 0 && errno != ENOENT) { | |
609 | if (r == 0) | |
610 | r = -errno; | |
611 | unit_file_changes_add(changes, n_changes, -errno, p, NULL); | |
612 | continue; | |
613 | } | |
bcafe923 | 614 | |
3b3557c4 JS |
615 | (void) rmdir_parents(p, config_path); |
616 | } | |
83096483 | 617 | |
0ec0deaa | 618 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, p, NULL); |
1dacfd2a | 619 | |
12bf0ae4 ZJS |
620 | /* Now, remember the full path (but with the root prefix removed) of |
621 | * the symlink we just removed, and remove any symlinks to it, too. */ | |
401017e0 LP |
622 | |
623 | rp = skip_root(lp, p); | |
624 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: p); | |
0ec0deaa LP |
625 | if (q < 0) |
626 | return q; | |
3b3557c4 | 627 | if (q > 0 && !dry_run) |
0ec0deaa | 628 | *restart = true; |
83096483 LP |
629 | } |
630 | } | |
631 | ||
83096483 LP |
632 | return r; |
633 | } | |
634 | ||
635 | static int remove_marked_symlinks( | |
636 | Set *remove_symlinks_to, | |
637 | const char *config_path, | |
401017e0 | 638 | const LookupPaths *lp, |
3b3557c4 | 639 | bool dry_run, |
83096483 | 640 | UnitFileChange **changes, |
da6053d0 | 641 | size_t *n_changes) { |
83096483 | 642 | |
da39f6a6 | 643 | _cleanup_close_ int fd = -1; |
0ec0deaa | 644 | bool restart; |
d25e100b | 645 | int r = 0; |
83096483 LP |
646 | |
647 | assert(config_path); | |
401017e0 | 648 | assert(lp); |
83096483 LP |
649 | |
650 | if (set_size(remove_symlinks_to) <= 0) | |
651 | return 0; | |
652 | ||
67852d08 | 653 | fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC); |
83096483 | 654 | if (fd < 0) |
32d9493e | 655 | return errno == ENOENT ? 0 : -errno; |
83096483 LP |
656 | |
657 | do { | |
658 | int q, cfd; | |
0ec0deaa | 659 | restart = false; |
83096483 | 660 | |
ead34950 | 661 | cfd = fcntl(fd, F_DUPFD_CLOEXEC, 3); |
d25e100b LP |
662 | if (cfd < 0) |
663 | return -errno; | |
83096483 LP |
664 | |
665 | /* This takes possession of cfd and closes it */ | |
3b3557c4 | 666 | q = remove_marked_symlinks_fd(remove_symlinks_to, cfd, config_path, config_path, lp, dry_run, &restart, changes, n_changes); |
83096483 LP |
667 | if (r == 0) |
668 | r = q; | |
0ec0deaa | 669 | } while (restart); |
83096483 | 670 | |
83096483 LP |
671 | return r; |
672 | } | |
673 | ||
d5c30911 | 674 | static int is_symlink_with_known_name(const UnitFileInstallInfo *i, const char *name) { |
5cd8ae31 ZJS |
675 | int r; |
676 | ||
677 | if (streq(name, i->name)) | |
678 | return true; | |
679 | ||
680 | if (strv_contains(i->aliases, name)) | |
681 | return true; | |
682 | ||
683 | /* Look for template symlink matching DefaultInstance */ | |
684 | if (i->default_instance && unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE)) { | |
685 | _cleanup_free_ char *s = NULL; | |
686 | ||
687 | r = unit_name_replace_instance(i->name, i->default_instance, &s); | |
688 | if (r < 0) { | |
689 | if (r != -EINVAL) | |
690 | return r; | |
691 | ||
692 | } else if (streq(name, s)) | |
693 | return true; | |
694 | } | |
695 | ||
696 | return false; | |
697 | } | |
698 | ||
83096483 | 699 | static int find_symlinks_fd( |
0ec0deaa | 700 | const char *root_dir, |
26526f98 | 701 | const UnitFileInstallInfo *i, |
d9b4b48f | 702 | bool match_aliases, |
4b37c89f | 703 | bool ignore_same_name, |
83096483 LP |
704 | int fd, |
705 | const char *path, | |
706 | const char *config_path, | |
707 | bool *same_name_link) { | |
708 | ||
7fd1b19b | 709 | _cleanup_closedir_ DIR *d = NULL; |
d25e100b LP |
710 | struct dirent *de; |
711 | int r = 0; | |
83096483 | 712 | |
5cd8ae31 | 713 | assert(i); |
83096483 LP |
714 | assert(fd >= 0); |
715 | assert(path); | |
716 | assert(config_path); | |
717 | assert(same_name_link); | |
718 | ||
719 | d = fdopendir(fd); | |
720 | if (!d) { | |
03e334a1 | 721 | safe_close(fd); |
83096483 LP |
722 | return -errno; |
723 | } | |
724 | ||
d25e100b | 725 | FOREACH_DIRENT(de, d, return -errno) { |
83096483 LP |
726 | |
727 | dirent_ensure_type(d, de); | |
728 | ||
729 | if (de->d_type == DT_DIR) { | |
7fd1b19b | 730 | _cleanup_free_ char *p = NULL; |
d25e100b | 731 | int nfd, q; |
83096483 LP |
732 | |
733 | nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
734 | if (nfd < 0) { | |
735 | if (errno == ENOENT) | |
736 | continue; | |
737 | ||
738 | if (r == 0) | |
739 | r = -errno; | |
740 | continue; | |
741 | } | |
742 | ||
743 | p = path_make_absolute(de->d_name, path); | |
744 | if (!p) { | |
03e334a1 | 745 | safe_close(nfd); |
ea55addc | 746 | return -ENOMEM; |
83096483 LP |
747 | } |
748 | ||
749 | /* This will close nfd, regardless whether it succeeds or not */ | |
4b37c89f | 750 | q = find_symlinks_fd(root_dir, i, match_aliases, ignore_same_name, nfd, |
5cd8ae31 | 751 | p, config_path, same_name_link); |
ea55addc ZJS |
752 | if (q > 0) |
753 | return 1; | |
83096483 LP |
754 | if (r == 0) |
755 | r = q; | |
756 | ||
757 | } else if (de->d_type == DT_LNK) { | |
7fd1b19b | 758 | _cleanup_free_ char *p = NULL, *dest = NULL; |
4b37c89f | 759 | bool found_path = false, found_dest, b = false; |
83096483 LP |
760 | int q; |
761 | ||
762 | /* Acquire symlink name */ | |
763 | p = path_make_absolute(de->d_name, path); | |
ea55addc ZJS |
764 | if (!p) |
765 | return -ENOMEM; | |
83096483 LP |
766 | |
767 | /* Acquire symlink destination */ | |
0ec0deaa | 768 | q = readlink_malloc(p, &dest); |
d25e100b LP |
769 | if (q == -ENOENT) |
770 | continue; | |
83096483 | 771 | if (q < 0) { |
83096483 LP |
772 | if (r == 0) |
773 | r = q; | |
774 | continue; | |
775 | } | |
776 | ||
0ec0deaa LP |
777 | /* Make absolute */ |
778 | if (!path_is_absolute(dest)) { | |
779 | char *x; | |
780 | ||
c6134d3e | 781 | x = path_join(root_dir, dest); |
0ec0deaa LP |
782 | if (!x) |
783 | return -ENOMEM; | |
784 | ||
2eded6cb | 785 | free_and_replace(dest, x); |
0ec0deaa LP |
786 | } |
787 | ||
2eded6cb | 788 | assert(unit_name_is_valid(i->name, UNIT_NAME_ANY)); |
4b37c89f ZJS |
789 | if (!ignore_same_name) |
790 | /* Check if the symlink itself matches what we are looking for. | |
791 | * | |
792 | * If ignore_same_name is specified, we are in one of the directories which | |
793 | * have lower priority than the unit file, and even if a file or symlink with | |
794 | * this name was found, we should ignore it. */ | |
795 | found_path = streq(de->d_name, i->name); | |
83096483 | 796 | |
2eded6cb ZJS |
797 | /* Check if what the symlink points to matches what we are looking for */ |
798 | found_dest = streq(basename(dest), i->name); | |
83096483 | 799 | |
83096483 | 800 | if (found_path && found_dest) { |
7fd1b19b | 801 | _cleanup_free_ char *t = NULL; |
83096483 LP |
802 | |
803 | /* Filter out same name links in the main | |
804 | * config path */ | |
5cd8ae31 | 805 | t = path_make_absolute(i->name, config_path); |
ea55addc ZJS |
806 | if (!t) |
807 | return -ENOMEM; | |
83096483 LP |
808 | |
809 | b = path_equal(t, p); | |
83096483 LP |
810 | } |
811 | ||
83096483 LP |
812 | if (b) |
813 | *same_name_link = true; | |
5cd8ae31 | 814 | else if (found_path || found_dest) { |
d9b4b48f ZJS |
815 | if (!match_aliases) |
816 | return 1; | |
817 | ||
5cd8ae31 ZJS |
818 | /* Check if symlink name is in the set of names used by [Install] */ |
819 | q = is_symlink_with_known_name(i, de->d_name); | |
5cd8ae31 ZJS |
820 | if (q < 0) |
821 | return q; | |
822 | if (q > 0) | |
823 | return 1; | |
824 | } | |
83096483 LP |
825 | } |
826 | } | |
d25e100b LP |
827 | |
828 | return r; | |
83096483 LP |
829 | } |
830 | ||
831 | static int find_symlinks( | |
0ec0deaa | 832 | const char *root_dir, |
26526f98 | 833 | const UnitFileInstallInfo *i, |
d9b4b48f | 834 | bool match_name, |
4b37c89f | 835 | bool ignore_same_name, |
83096483 LP |
836 | const char *config_path, |
837 | bool *same_name_link) { | |
838 | ||
839 | int fd; | |
840 | ||
5cd8ae31 | 841 | assert(i); |
83096483 LP |
842 | assert(config_path); |
843 | assert(same_name_link); | |
844 | ||
1cd1dab9 | 845 | fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC); |
d5891fda | 846 | if (fd < 0) { |
a1feacf7 | 847 | if (IN_SET(errno, ENOENT, ENOTDIR, EACCES)) |
d5891fda | 848 | return 0; |
83096483 | 849 | return -errno; |
d5891fda | 850 | } |
83096483 LP |
851 | |
852 | /* This takes possession of fd and closes it */ | |
4b37c89f | 853 | return find_symlinks_fd(root_dir, i, match_name, ignore_same_name, fd, |
5cd8ae31 | 854 | config_path, config_path, same_name_link); |
83096483 LP |
855 | } |
856 | ||
857 | static int find_symlinks_in_scope( | |
d2561cfd | 858 | UnitFileScope scope, |
e1c5c2b0 | 859 | const LookupPaths *paths, |
26526f98 | 860 | const UnitFileInstallInfo *i, |
d9b4b48f | 861 | bool match_name, |
83096483 LP |
862 | UnitFileState *state) { |
863 | ||
dfead90d LP |
864 | bool same_name_link_runtime = false, same_name_link_config = false; |
865 | bool enabled_in_runtime = false, enabled_at_all = false; | |
4b37c89f | 866 | bool ignore_same_name = false; |
dfead90d | 867 | char **p; |
0ec0deaa | 868 | int r; |
83096483 | 869 | |
e1c5c2b0 | 870 | assert(paths); |
5cd8ae31 | 871 | assert(i); |
83096483 | 872 | |
4b37c89f ZJS |
873 | /* As we iterate over the list of search paths in paths->search_path, we may encounter "same name" |
874 | * symlinks. The ones which are "below" (i.e. have lower priority) than the unit file itself are | |
5238e957 | 875 | * effectively masked, so we should ignore them. */ |
4b37c89f | 876 | |
dfead90d LP |
877 | STRV_FOREACH(p, paths->search_path) { |
878 | bool same_name_link = false; | |
879 | ||
4b37c89f | 880 | r = find_symlinks(paths->root_dir, i, match_name, ignore_same_name, *p, &same_name_link); |
dfead90d LP |
881 | if (r < 0) |
882 | return r; | |
883 | if (r > 0) { | |
884 | /* We found symlinks in this dir? Yay! Let's see where precisely it is enabled. */ | |
885 | ||
bb2682bc | 886 | if (path_equal_ptr(*p, paths->persistent_config)) { |
dfead90d LP |
887 | /* This is the best outcome, let's return it immediately. */ |
888 | *state = UNIT_FILE_ENABLED; | |
889 | return 1; | |
890 | } | |
891 | ||
bb2682bc | 892 | /* look for global enablement of user units */ |
d2561cfd ZJS |
893 | if (scope == UNIT_FILE_USER && path_is_user_config_dir(*p)) { |
894 | *state = UNIT_FILE_ENABLED; | |
895 | return 1; | |
896 | } | |
897 | ||
dfead90d LP |
898 | r = path_is_runtime(paths, *p, false); |
899 | if (r < 0) | |
900 | return r; | |
901 | if (r > 0) | |
902 | enabled_in_runtime = true; | |
903 | else | |
904 | enabled_at_all = true; | |
905 | ||
906 | } else if (same_name_link) { | |
bb2682bc | 907 | if (path_equal_ptr(*p, paths->persistent_config)) |
dfead90d LP |
908 | same_name_link_config = true; |
909 | else { | |
910 | r = path_is_runtime(paths, *p, false); | |
911 | if (r < 0) | |
912 | return r; | |
913 | if (r > 0) | |
914 | same_name_link_runtime = true; | |
915 | } | |
916 | } | |
4b37c89f ZJS |
917 | |
918 | /* Check if next iteration will be "below" the unit file (either a regular file | |
919 | * or a symlink), and hence should be ignored */ | |
920 | if (!ignore_same_name && path_startswith(i->path, *p)) | |
921 | ignore_same_name = true; | |
83096483 LP |
922 | } |
923 | ||
dfead90d | 924 | if (enabled_in_runtime) { |
0ec0deaa | 925 | *state = UNIT_FILE_ENABLED_RUNTIME; |
dfead90d LP |
926 | return 1; |
927 | } | |
928 | ||
929 | /* Here's a special rule: if the unit we are looking for is an instance, and it symlinked in the search path | |
930 | * outside of runtime and configuration directory, then we consider it statically enabled. Note we do that only | |
931 | * for instance, not for regular names, as those are merely aliases, while instances explicitly instantiate | |
932 | * something, and hence are a much stronger concept. */ | |
5cd8ae31 | 933 | if (enabled_at_all && unit_name_is_valid(i->name, UNIT_NAME_INSTANCE)) { |
dfead90d LP |
934 | *state = UNIT_FILE_STATIC; |
935 | return 1; | |
83096483 LP |
936 | } |
937 | ||
938 | /* Hmm, we didn't find it, but maybe we found the same name | |
939 | * link? */ | |
dfead90d | 940 | if (same_name_link_config) { |
0ec0deaa LP |
941 | *state = UNIT_FILE_LINKED; |
942 | return 1; | |
943 | } | |
83096483 LP |
944 | if (same_name_link_runtime) { |
945 | *state = UNIT_FILE_LINKED_RUNTIME; | |
946 | return 1; | |
83096483 LP |
947 | } |
948 | ||
949 | return 0; | |
950 | } | |
951 | ||
0ec0deaa | 952 | static void install_info_free(UnitFileInstallInfo *i) { |
83096483 | 953 | |
0ec0deaa LP |
954 | if (!i) |
955 | return; | |
83096483 | 956 | |
0ec0deaa LP |
957 | free(i->name); |
958 | free(i->path); | |
959 | strv_free(i->aliases); | |
960 | strv_free(i->wanted_by); | |
961 | strv_free(i->required_by); | |
962 | strv_free(i->also); | |
963 | free(i->default_instance); | |
964 | free(i->symlink_target); | |
965 | free(i); | |
966 | } | |
83096483 | 967 | |
0ec0deaa LP |
968 | static void install_context_done(InstallContext *c) { |
969 | assert(c); | |
83096483 | 970 | |
224b0e7a ZJS |
971 | c->will_process = ordered_hashmap_free_with_destructor(c->will_process, install_info_free); |
972 | c->have_processed = ordered_hashmap_free_with_destructor(c->have_processed, install_info_free); | |
0ec0deaa | 973 | } |
83096483 | 974 | |
0ec0deaa LP |
975 | static UnitFileInstallInfo *install_info_find(InstallContext *c, const char *name) { |
976 | UnitFileInstallInfo *i; | |
83096483 | 977 | |
0ec0deaa LP |
978 | i = ordered_hashmap_get(c->have_processed, name); |
979 | if (i) | |
980 | return i; | |
83096483 | 981 | |
0ec0deaa | 982 | return ordered_hashmap_get(c->will_process, name); |
83096483 LP |
983 | } |
984 | ||
af3d8113 | 985 | static int install_info_may_process( |
26526f98 | 986 | const UnitFileInstallInfo *i, |
af3d8113 ZJS |
987 | const LookupPaths *paths, |
988 | UnitFileChange **changes, | |
da6053d0 | 989 | size_t *n_changes) { |
76adb5b8 LP |
990 | assert(i); |
991 | assert(paths); | |
992 | ||
047d91f9 ZJS |
993 | /* Checks whether the loaded unit file is one we should process, or is masked, |
994 | * transient or generated and thus not subject to enable/disable operations. */ | |
76adb5b8 | 995 | |
af3d8113 ZJS |
996 | if (i->type == UNIT_FILE_TYPE_MASKED) { |
997 | unit_file_changes_add(changes, n_changes, -ERFKILL, i->path, NULL); | |
76ec966f | 998 | return -ERFKILL; |
af3d8113 ZJS |
999 | } |
1000 | if (path_is_generator(paths, i->path) || | |
1001 | path_is_transient(paths, i->path)) { | |
1002 | unit_file_changes_add(changes, n_changes, -EADDRNOTAVAIL, i->path, NULL); | |
76adb5b8 | 1003 | return -EADDRNOTAVAIL; |
af3d8113 | 1004 | } |
76adb5b8 LP |
1005 | |
1006 | return 0; | |
1007 | } | |
1008 | ||
ff56349d ZJS |
1009 | /** |
1010 | * Adds a new UnitFileInstallInfo entry under name in the InstallContext.will_process | |
1011 | * hashmap, or retrieves the existing one if already present. | |
19539807 ZJS |
1012 | * |
1013 | * Returns negative on error, 0 if the unit was already known, 1 otherwise. | |
ff56349d | 1014 | */ |
83096483 LP |
1015 | static int install_info_add( |
1016 | InstallContext *c, | |
1017 | const char *name, | |
0ec0deaa | 1018 | const char *path, |
19539807 | 1019 | bool auxiliary, |
0ec0deaa LP |
1020 | UnitFileInstallInfo **ret) { |
1021 | ||
cab6235f | 1022 | UnitFileInstallInfo *i = NULL; |
83096483 LP |
1023 | int r; |
1024 | ||
1025 | assert(c); | |
1026 | assert(name || path); | |
1027 | ||
1028 | if (!name) | |
2b6bf07d | 1029 | name = basename(path); |
83096483 | 1030 | |
7410616c | 1031 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
83096483 LP |
1032 | return -EINVAL; |
1033 | ||
0ec0deaa LP |
1034 | i = install_info_find(c, name); |
1035 | if (i) { | |
19539807 ZJS |
1036 | i->auxiliary = i->auxiliary && auxiliary; |
1037 | ||
0ec0deaa LP |
1038 | if (ret) |
1039 | *ret = i; | |
83096483 | 1040 | return 0; |
0ec0deaa | 1041 | } |
83096483 | 1042 | |
0ec0deaa | 1043 | r = ordered_hashmap_ensure_allocated(&c->will_process, &string_hash_ops); |
83096483 LP |
1044 | if (r < 0) |
1045 | return r; | |
1046 | ||
d23aeead | 1047 | i = new(UnitFileInstallInfo, 1); |
83096483 LP |
1048 | if (!i) |
1049 | return -ENOMEM; | |
d23aeead LP |
1050 | |
1051 | *i = (UnitFileInstallInfo) { | |
1052 | .type = _UNIT_FILE_TYPE_INVALID, | |
1053 | .auxiliary = auxiliary, | |
1054 | }; | |
83096483 LP |
1055 | |
1056 | i->name = strdup(name); | |
1057 | if (!i->name) { | |
1058 | r = -ENOMEM; | |
1059 | goto fail; | |
1060 | } | |
1061 | ||
1062 | if (path) { | |
1063 | i->path = strdup(path); | |
1064 | if (!i->path) { | |
1065 | r = -ENOMEM; | |
1066 | goto fail; | |
1067 | } | |
1068 | } | |
1069 | ||
0ec0deaa | 1070 | r = ordered_hashmap_put(c->will_process, i->name, i); |
83096483 LP |
1071 | if (r < 0) |
1072 | goto fail; | |
1073 | ||
0ec0deaa LP |
1074 | if (ret) |
1075 | *ret = i; | |
1076 | ||
19539807 | 1077 | return 1; |
83096483 LP |
1078 | |
1079 | fail: | |
d25e100b | 1080 | install_info_free(i); |
83096483 LP |
1081 | return r; |
1082 | } | |
1083 | ||
a7724589 ZJS |
1084 | static int config_parse_alias( |
1085 | const char *unit, | |
1086 | const char *filename, | |
1087 | unsigned line, | |
1088 | const char *section, | |
1089 | unsigned section_line, | |
1090 | const char *lvalue, | |
1091 | int ltype, | |
1092 | const char *rvalue, | |
1093 | void *data, | |
1094 | void *userdata) { | |
1095 | ||
a7724589 ZJS |
1096 | UnitType type; |
1097 | ||
142468d8 | 1098 | assert(unit); |
a7724589 ZJS |
1099 | assert(filename); |
1100 | assert(lvalue); | |
1101 | assert(rvalue); | |
1102 | ||
142468d8 | 1103 | type = unit_name_to_type(unit); |
a7724589 ZJS |
1104 | if (!unit_type_may_alias(type)) |
1105 | return log_syntax(unit, LOG_WARNING, filename, line, 0, | |
3b8769bd | 1106 | "Alias= is not allowed for %s units, ignoring.", |
a7724589 ZJS |
1107 | unit_type_to_string(type)); |
1108 | ||
1109 | return config_parse_strv(unit, filename, line, section, section_line, | |
1110 | lvalue, ltype, rvalue, data, userdata); | |
1111 | } | |
1112 | ||
d54c4993 LP |
1113 | static int config_parse_also( |
1114 | const char *unit, | |
1115 | const char *filename, | |
1116 | unsigned line, | |
1117 | const char *section, | |
1118 | unsigned section_line, | |
1119 | const char *lvalue, | |
1120 | int ltype, | |
1121 | const char *rvalue, | |
1122 | void *data, | |
1123 | void *userdata) { | |
83096483 | 1124 | |
19539807 | 1125 | UnitFileInstallInfo *info = userdata, *alsoinfo = NULL; |
0ec0deaa LP |
1126 | InstallContext *c = data; |
1127 | int r; | |
83096483 | 1128 | |
142468d8 | 1129 | assert(unit); |
83096483 LP |
1130 | assert(filename); |
1131 | assert(lvalue); | |
1132 | assert(rvalue); | |
1133 | ||
0ec0deaa | 1134 | for (;;) { |
a6612e65 | 1135 | _cleanup_free_ char *word = NULL, *printed = NULL; |
03da6513 | 1136 | |
0ec0deaa LP |
1137 | r = extract_first_word(&rvalue, &word, NULL, 0); |
1138 | if (r < 0) | |
1139 | return r; | |
03da6513 SS |
1140 | if (r == 0) |
1141 | break; | |
83096483 | 1142 | |
a6612e65 | 1143 | r = install_full_printf(info, word, &printed); |
d9e5e694 | 1144 | if (r < 0) |
83096483 | 1145 | return r; |
aedd4012 | 1146 | |
a6612e65 | 1147 | r = install_info_add(c, printed, NULL, true, &alsoinfo); |
d9e5e694 | 1148 | if (r < 0) |
83096483 | 1149 | return r; |
aedd4012 | 1150 | |
a6612e65 | 1151 | r = strv_push(&info->also, printed); |
aedd4012 JS |
1152 | if (r < 0) |
1153 | return r; | |
0ec0deaa | 1154 | |
a6612e65 | 1155 | printed = NULL; |
83096483 LP |
1156 | } |
1157 | ||
1158 | return 0; | |
1159 | } | |
1160 | ||
d54c4993 LP |
1161 | static int config_parse_default_instance( |
1162 | const char *unit, | |
1163 | const char *filename, | |
1164 | unsigned line, | |
1165 | const char *section, | |
1166 | unsigned section_line, | |
1167 | const char *lvalue, | |
1168 | int ltype, | |
1169 | const char *rvalue, | |
1170 | void *data, | |
1171 | void *userdata) { | |
1172 | ||
cab6235f | 1173 | UnitFileInstallInfo *i = data; |
d7604756 | 1174 | _cleanup_free_ char *printed = NULL; |
d54c4993 LP |
1175 | int r; |
1176 | ||
142468d8 | 1177 | assert(unit); |
d54c4993 LP |
1178 | assert(filename); |
1179 | assert(lvalue); | |
1180 | assert(rvalue); | |
1181 | ||
142468d8 | 1182 | if (unit_name_is_valid(unit, UNIT_NAME_INSTANCE)) |
6597fa61 ZJS |
1183 | /* When enabling an instance, we might be using a template unit file, |
1184 | * but we should ignore DefaultInstance silently. */ | |
1185 | return 0; | |
142468d8 | 1186 | if (!unit_name_is_valid(unit, UNIT_NAME_TEMPLATE)) |
6597fa61 | 1187 | return log_syntax(unit, LOG_WARNING, filename, line, 0, |
10d67460 | 1188 | "DefaultInstance= only makes sense for template units, ignoring."); |
6597fa61 | 1189 | |
d54c4993 LP |
1190 | r = install_full_printf(i, rvalue, &printed); |
1191 | if (r < 0) | |
1192 | return r; | |
1193 | ||
b5395600 JR |
1194 | if (isempty(printed)) { |
1195 | i->default_instance = mfree(i->default_instance); | |
1196 | return 0; | |
1197 | } | |
1198 | ||
d7604756 | 1199 | if (!unit_instance_is_valid(printed)) |
e5171296 ZJS |
1200 | return log_syntax(unit, LOG_WARNING, filename, line, SYNTHETIC_ERRNO(EINVAL), |
1201 | "Invalid DefaultInstance= value \"%s\".", printed); | |
d54c4993 | 1202 | |
3b319885 | 1203 | return free_and_replace(i->default_instance, printed); |
d54c4993 LP |
1204 | } |
1205 | ||
83096483 LP |
1206 | static int unit_file_load( |
1207 | InstallContext *c, | |
cab6235f | 1208 | UnitFileInstallInfo *info, |
83096483 | 1209 | const char *path, |
d04a9386 | 1210 | const char *root_dir, |
0ec0deaa | 1211 | SearchFlags flags) { |
83096483 | 1212 | |
f975e971 | 1213 | const ConfigTableItem items[] = { |
a7724589 | 1214 | { "Install", "Alias", config_parse_alias, 0, &info->aliases }, |
d54c4993 LP |
1215 | { "Install", "WantedBy", config_parse_strv, 0, &info->wanted_by }, |
1216 | { "Install", "RequiredBy", config_parse_strv, 0, &info->required_by }, | |
1217 | { "Install", "DefaultInstance", config_parse_default_instance, 0, info }, | |
1218 | { "Install", "Also", config_parse_also, 0, c }, | |
d54c4993 | 1219 | {} |
83096483 LP |
1220 | }; |
1221 | ||
133e5b36 | 1222 | UnitType type; |
7fd1b19b | 1223 | _cleanup_fclose_ FILE *f = NULL; |
0ec0deaa LP |
1224 | _cleanup_close_ int fd = -1; |
1225 | struct stat st; | |
1226 | int r; | |
83096483 | 1227 | |
83096483 LP |
1228 | assert(info); |
1229 | assert(path); | |
1230 | ||
d04a9386 LP |
1231 | if (!(flags & SEARCH_DROPIN)) { |
1232 | /* Loading or checking for the main unit file… */ | |
133e5b36 | 1233 | |
d04a9386 LP |
1234 | type = unit_name_to_type(info->name); |
1235 | if (type < 0) | |
1236 | return -EINVAL; | |
baaa35ad ZJS |
1237 | if (unit_name_is_valid(info->name, UNIT_NAME_TEMPLATE|UNIT_NAME_INSTANCE) && !unit_type_may_template(type)) |
1238 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1239 | "Unit type %s cannot be templated.", unit_type_to_string(type)); | |
d04a9386 LP |
1240 | |
1241 | if (!(flags & SEARCH_LOAD)) { | |
1242 | r = lstat(path, &st); | |
1243 | if (r < 0) | |
1244 | return -errno; | |
1245 | ||
1246 | if (null_or_empty(&st)) | |
1247 | info->type = UNIT_FILE_TYPE_MASKED; | |
1248 | else if (S_ISREG(st.st_mode)) | |
1249 | info->type = UNIT_FILE_TYPE_REGULAR; | |
1250 | else if (S_ISLNK(st.st_mode)) | |
1251 | return -ELOOP; | |
1252 | else if (S_ISDIR(st.st_mode)) | |
1253 | return -EISDIR; | |
1254 | else | |
1255 | return -ENOTTY; | |
1256 | ||
1257 | return 0; | |
1258 | } | |
1259 | ||
1260 | fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW); | |
1261 | if (fd < 0) | |
d25e100b | 1262 | return -errno; |
d04a9386 LP |
1263 | } else { |
1264 | /* 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 | 1265 | |
d04a9386 LP |
1266 | if (!(flags & SEARCH_LOAD)) |
1267 | return 0; | |
0ec0deaa | 1268 | |
d04a9386 LP |
1269 | fd = chase_symlinks_and_open(path, root_dir, 0, O_RDONLY|O_CLOEXEC|O_NOCTTY, NULL); |
1270 | if (fd < 0) | |
1271 | return fd; | |
e94937df LN |
1272 | } |
1273 | ||
0ec0deaa LP |
1274 | if (fstat(fd, &st) < 0) |
1275 | return -errno; | |
d04a9386 | 1276 | |
0ec0deaa | 1277 | if (null_or_empty(&st)) { |
d04a9386 LP |
1278 | if ((flags & SEARCH_DROPIN) == 0) |
1279 | info->type = UNIT_FILE_TYPE_MASKED; | |
1280 | ||
0ec0deaa LP |
1281 | return 0; |
1282 | } | |
3cc44114 LP |
1283 | |
1284 | r = stat_verify_regular(&st); | |
1285 | if (r < 0) | |
1286 | return r; | |
83096483 | 1287 | |
e92aaed3 | 1288 | f = fdopen(fd, "r"); |
0ec0deaa LP |
1289 | if (!f) |
1290 | return -errno; | |
1291 | fd = -1; | |
83096483 | 1292 | |
d04a9386 LP |
1293 | /* c is only needed if we actually load the file (it's referenced from items[] btw, in case you wonder.) */ |
1294 | assert(c); | |
1295 | ||
142468d8 | 1296 | r = config_parse(info->name, path, f, |
f4331d0d ZJS |
1297 | "Install\0" |
1298 | "-Unit\0" | |
1299 | "-Automount\0" | |
1300 | "-Device\0" | |
1301 | "-Mount\0" | |
1302 | "-Path\0" | |
1303 | "-Scope\0" | |
1304 | "-Service\0" | |
1305 | "-Slice\0" | |
1306 | "-Socket\0" | |
1307 | "-Swap\0" | |
1308 | "-Target\0" | |
1309 | "-Timer\0", | |
36f822c4 | 1310 | config_item_table_lookup, items, |
f4331d0d | 1311 | CONFIG_PARSE_ALLOW_INCLUDE, info); |
83096483 | 1312 | if (r < 0) |
59108fbe | 1313 | return log_debug_errno(r, "Failed to parse %s: %m", info->name); |
83096483 | 1314 | |
d04a9386 LP |
1315 | if ((flags & SEARCH_DROPIN) == 0) |
1316 | info->type = UNIT_FILE_TYPE_REGULAR; | |
aedd4012 | 1317 | |
78d54bd4 | 1318 | return |
693eb9a2 LP |
1319 | (int) strv_length(info->aliases) + |
1320 | (int) strv_length(info->wanted_by) + | |
1321 | (int) strv_length(info->required_by); | |
83096483 LP |
1322 | } |
1323 | ||
0ec0deaa LP |
1324 | static int unit_file_load_or_readlink( |
1325 | InstallContext *c, | |
1326 | UnitFileInstallInfo *info, | |
1327 | const char *path, | |
1328 | const char *root_dir, | |
1329 | SearchFlags flags) { | |
1330 | ||
401017e0 | 1331 | _cleanup_free_ char *target = NULL; |
0ec0deaa LP |
1332 | int r; |
1333 | ||
d04a9386 LP |
1334 | r = unit_file_load(c, info, path, root_dir, flags); |
1335 | if (r != -ELOOP || (flags & SEARCH_DROPIN)) | |
0ec0deaa LP |
1336 | return r; |
1337 | ||
1338 | /* This is a symlink, let's read it. */ | |
1339 | ||
401017e0 | 1340 | r = readlink_malloc(path, &target); |
0ec0deaa LP |
1341 | if (r < 0) |
1342 | return r; | |
1343 | ||
401017e0 | 1344 | if (path_equal(target, "/dev/null")) |
0ec0deaa LP |
1345 | info->type = UNIT_FILE_TYPE_MASKED; |
1346 | else { | |
1347 | const char *bn; | |
1348 | UnitType a, b; | |
1349 | ||
401017e0 | 1350 | bn = basename(target); |
0ec0deaa LP |
1351 | |
1352 | if (unit_name_is_valid(info->name, UNIT_NAME_PLAIN)) { | |
1353 | ||
1354 | if (!unit_name_is_valid(bn, UNIT_NAME_PLAIN)) | |
1355 | return -EINVAL; | |
1356 | ||
1357 | } else if (unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { | |
1358 | ||
1359 | if (!unit_name_is_valid(bn, UNIT_NAME_INSTANCE|UNIT_NAME_TEMPLATE)) | |
1360 | return -EINVAL; | |
1361 | ||
1362 | } else if (unit_name_is_valid(info->name, UNIT_NAME_TEMPLATE)) { | |
1363 | ||
1364 | if (!unit_name_is_valid(bn, UNIT_NAME_TEMPLATE)) | |
1365 | return -EINVAL; | |
1366 | } else | |
1367 | return -EINVAL; | |
1368 | ||
1369 | /* Enforce that the symlink destination does not | |
1370 | * change the unit file type. */ | |
1371 | ||
1372 | a = unit_name_to_type(info->name); | |
1373 | b = unit_name_to_type(bn); | |
1374 | if (a < 0 || b < 0 || a != b) | |
1375 | return -EINVAL; | |
1376 | ||
401017e0 LP |
1377 | if (path_is_absolute(target)) |
1378 | /* This is an absolute path, prefix the root so that we always deal with fully qualified paths */ | |
c6134d3e | 1379 | info->symlink_target = path_join(root_dir, target); |
401017e0 LP |
1380 | else |
1381 | /* This is a relative path, take it relative to the dir the symlink is located in. */ | |
1382 | info->symlink_target = file_in_same_dir(path, target); | |
1383 | if (!info->symlink_target) | |
1384 | return -ENOMEM; | |
1385 | ||
0ec0deaa | 1386 | info->type = UNIT_FILE_TYPE_SYMLINK; |
0ec0deaa LP |
1387 | } |
1388 | ||
1389 | return 0; | |
1390 | } | |
1391 | ||
83096483 LP |
1392 | static int unit_file_search( |
1393 | InstallContext *c, | |
cab6235f | 1394 | UnitFileInstallInfo *info, |
a8ffe6fb | 1395 | const LookupPaths *paths, |
0ec0deaa | 1396 | SearchFlags flags) { |
83096483 | 1397 | |
d04a9386 LP |
1398 | const char *dropin_dir_name = NULL, *dropin_template_dir_name = NULL; |
1399 | _cleanup_strv_free_ char **dirs = NULL, **files = NULL; | |
64f9280e | 1400 | _cleanup_free_ char *template = NULL; |
142468d8 | 1401 | bool found_unit = false; |
d04a9386 LP |
1402 | int r, result; |
1403 | char **p; | |
83096483 | 1404 | |
83096483 LP |
1405 | assert(info); |
1406 | assert(paths); | |
1407 | ||
0ec0deaa LP |
1408 | /* Was this unit already loaded? */ |
1409 | if (info->type != _UNIT_FILE_TYPE_INVALID) | |
1410 | return 0; | |
1411 | ||
278fa575 | 1412 | if (info->path) |
e4bb56c7 | 1413 | return unit_file_load_or_readlink(c, info, info->path, paths->root_dir, flags); |
83096483 LP |
1414 | |
1415 | assert(info->name); | |
1416 | ||
142468d8 JL |
1417 | if (unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { |
1418 | r = unit_name_template(info->name, &template); | |
1419 | if (r < 0) | |
1420 | return r; | |
1421 | } | |
1422 | ||
a3c4eb07 | 1423 | STRV_FOREACH(p, paths->search_path) { |
e50bd775 | 1424 | _cleanup_free_ char *path = NULL; |
83096483 | 1425 | |
657ee2d8 | 1426 | path = path_join(*p, info->name); |
83096483 LP |
1427 | if (!path) |
1428 | return -ENOMEM; | |
1429 | ||
e4bb56c7 | 1430 | r = unit_file_load_or_readlink(c, info, path, paths->root_dir, flags); |
0155928c | 1431 | if (r >= 0) { |
ae2a15bc | 1432 | info->path = TAKE_PTR(path); |
142468d8 JL |
1433 | result = r; |
1434 | found_unit = true; | |
1435 | break; | |
a1feacf7 | 1436 | } else if (!IN_SET(r, -ENOENT, -ENOTDIR, -EACCES)) |
0155928c | 1437 | return r; |
e50bd775 | 1438 | } |
62b00233 | 1439 | |
142468d8 JL |
1440 | if (!found_unit && template) { |
1441 | ||
e50bd775 LP |
1442 | /* Unit file doesn't exist, however instance |
1443 | * enablement was requested. We will check if it is | |
1444 | * possible to load template unit file. */ | |
29283ea4 | 1445 | |
a3c4eb07 | 1446 | STRV_FOREACH(p, paths->search_path) { |
e50bd775 LP |
1447 | _cleanup_free_ char *path = NULL; |
1448 | ||
657ee2d8 | 1449 | path = path_join(*p, template); |
62b00233 ZJS |
1450 | if (!path) |
1451 | return -ENOMEM; | |
29283ea4 | 1452 | |
e4bb56c7 | 1453 | r = unit_file_load_or_readlink(c, info, path, paths->root_dir, flags); |
0155928c | 1454 | if (r >= 0) { |
ae2a15bc | 1455 | info->path = TAKE_PTR(path); |
142468d8 JL |
1456 | result = r; |
1457 | found_unit = true; | |
1458 | break; | |
a1feacf7 | 1459 | } else if (!IN_SET(r, -ENOENT, -ENOTDIR, -EACCES)) |
0155928c | 1460 | return r; |
29283ea4 | 1461 | } |
83096483 LP |
1462 | } |
1463 | ||
baaa35ad ZJS |
1464 | if (!found_unit) |
1465 | return log_debug_errno(SYNTHETIC_ERRNO(ENOENT), | |
1466 | "Cannot find unit %s%s%s.", | |
1467 | info->name, template ? " or " : "", strempty(template)); | |
142468d8 | 1468 | |
9639b175 FB |
1469 | if (info->type == UNIT_FILE_TYPE_MASKED) |
1470 | return result; | |
1471 | ||
142468d8 JL |
1472 | /* Search for drop-in directories */ |
1473 | ||
1474 | dropin_dir_name = strjoina(info->name, ".d"); | |
1475 | STRV_FOREACH(p, paths->search_path) { | |
1476 | char *path; | |
1477 | ||
62a85ee0 | 1478 | path = path_join(*p, dropin_dir_name); |
142468d8 JL |
1479 | if (!path) |
1480 | return -ENOMEM; | |
1481 | ||
1482 | r = strv_consume(&dirs, path); | |
1483 | if (r < 0) | |
1484 | return r; | |
1485 | } | |
1486 | ||
1487 | if (template) { | |
1488 | dropin_template_dir_name = strjoina(template, ".d"); | |
1489 | STRV_FOREACH(p, paths->search_path) { | |
1490 | char *path; | |
1491 | ||
62a85ee0 | 1492 | path = path_join(*p, dropin_template_dir_name); |
142468d8 JL |
1493 | if (!path) |
1494 | return -ENOMEM; | |
1495 | ||
1496 | r = strv_consume(&dirs, path); | |
1497 | if (r < 0) | |
1498 | return r; | |
1499 | } | |
1500 | } | |
1501 | ||
1502 | /* Load drop-in conf files */ | |
1503 | ||
1504 | r = conf_files_list_strv(&files, ".conf", NULL, 0, (const char**) dirs); | |
1505 | if (r < 0) | |
1506 | return log_debug_errno(r, "Failed to get list of conf files: %m"); | |
1507 | ||
1508 | STRV_FOREACH(p, files) { | |
d04a9386 | 1509 | r = unit_file_load_or_readlink(c, info, *p, paths->root_dir, flags | SEARCH_DROPIN); |
142468d8 JL |
1510 | if (r < 0) |
1511 | return log_debug_errno(r, "Failed to load conf file %s: %m", *p); | |
1512 | } | |
1513 | ||
1514 | return result; | |
83096483 LP |
1515 | } |
1516 | ||
0ec0deaa LP |
1517 | static int install_info_follow( |
1518 | InstallContext *c, | |
1519 | UnitFileInstallInfo *i, | |
83096483 | 1520 | const char *root_dir, |
9f6cbcf5 LP |
1521 | SearchFlags flags, |
1522 | bool ignore_different_name) { | |
0ec0deaa LP |
1523 | |
1524 | assert(c); | |
1525 | assert(i); | |
1526 | ||
1527 | if (i->type != UNIT_FILE_TYPE_SYMLINK) | |
1528 | return -EINVAL; | |
1529 | if (!i->symlink_target) | |
1530 | return -EINVAL; | |
1531 | ||
1532 | /* If the basename doesn't match, the caller should add a | |
1533 | * complete new entry for this. */ | |
1534 | ||
9f6cbcf5 | 1535 | if (!ignore_different_name && !streq(basename(i->symlink_target), i->name)) |
0ec0deaa LP |
1536 | return -EXDEV; |
1537 | ||
3b319885 | 1538 | free_and_replace(i->path, i->symlink_target); |
0ec0deaa LP |
1539 | i->type = _UNIT_FILE_TYPE_INVALID; |
1540 | ||
1541 | return unit_file_load_or_readlink(c, i, i->path, root_dir, flags); | |
1542 | } | |
1543 | ||
64f9280e | 1544 | /** |
ff56349d ZJS |
1545 | * Search for the unit file. If the unit name is a symlink, follow the symlink to the |
1546 | * target, maybe more than once. Propagate the instance name if present. | |
64f9280e | 1547 | */ |
0ec0deaa LP |
1548 | static int install_info_traverse( |
1549 | UnitFileScope scope, | |
1550 | InstallContext *c, | |
0ec0deaa LP |
1551 | const LookupPaths *paths, |
1552 | UnitFileInstallInfo *start, | |
1553 | SearchFlags flags, | |
1554 | UnitFileInstallInfo **ret) { | |
83096483 | 1555 | |
cab6235f | 1556 | UnitFileInstallInfo *i; |
0ec0deaa | 1557 | unsigned k = 0; |
83096483 LP |
1558 | int r; |
1559 | ||
1560 | assert(paths); | |
0ec0deaa LP |
1561 | assert(start); |
1562 | assert(c); | |
83096483 | 1563 | |
e4bb56c7 | 1564 | r = unit_file_search(c, start, paths, flags); |
83096483 LP |
1565 | if (r < 0) |
1566 | return r; | |
1567 | ||
0ec0deaa LP |
1568 | i = start; |
1569 | while (i->type == UNIT_FILE_TYPE_SYMLINK) { | |
1570 | /* Follow the symlink */ | |
83096483 | 1571 | |
0ec0deaa LP |
1572 | if (++k > UNIT_FILE_FOLLOW_SYMLINK_MAX) |
1573 | return -ELOOP; | |
83096483 | 1574 | |
e1c5c2b0 | 1575 | if (!(flags & SEARCH_FOLLOW_CONFIG_SYMLINKS)) { |
dfead90d | 1576 | r = path_is_config(paths, i->path, true); |
e1c5c2b0 LP |
1577 | if (r < 0) |
1578 | return r; | |
1579 | if (r > 0) | |
1580 | return -ELOOP; | |
1581 | } | |
83096483 | 1582 | |
9f6cbcf5 | 1583 | r = install_info_follow(c, i, paths->root_dir, flags, false); |
0155928c | 1584 | if (r == -EXDEV) { |
0ec0deaa LP |
1585 | _cleanup_free_ char *buffer = NULL; |
1586 | const char *bn; | |
83096483 | 1587 | |
0ec0deaa LP |
1588 | /* Target has a different name, create a new |
1589 | * install info object for that, and continue | |
1590 | * with that. */ | |
83096483 | 1591 | |
0ec0deaa | 1592 | bn = basename(i->symlink_target); |
83096483 | 1593 | |
0ec0deaa LP |
1594 | if (unit_name_is_valid(i->name, UNIT_NAME_INSTANCE) && |
1595 | unit_name_is_valid(bn, UNIT_NAME_TEMPLATE)) { | |
83096483 | 1596 | |
0ec0deaa LP |
1597 | _cleanup_free_ char *instance = NULL; |
1598 | ||
1599 | r = unit_name_to_instance(i->name, &instance); | |
1600 | if (r < 0) | |
1601 | return r; | |
1602 | ||
1603 | r = unit_name_replace_instance(bn, instance, &buffer); | |
1604 | if (r < 0) | |
1605 | return r; | |
1606 | ||
9f6cbcf5 LP |
1607 | if (streq(buffer, i->name)) { |
1608 | ||
1609 | /* We filled in the instance, and the target stayed the same? If so, then let's | |
1610 | * honour the link as it is. */ | |
1611 | ||
1612 | r = install_info_follow(c, i, paths->root_dir, flags, true); | |
1613 | if (r < 0) | |
1614 | return r; | |
1615 | ||
1616 | continue; | |
1617 | } | |
1618 | ||
0ec0deaa LP |
1619 | bn = buffer; |
1620 | } | |
1621 | ||
19539807 | 1622 | r = install_info_add(c, bn, NULL, false, &i); |
0ec0deaa LP |
1623 | if (r < 0) |
1624 | return r; | |
1625 | ||
0155928c | 1626 | /* Try again, with the new target we found. */ |
e4bb56c7 | 1627 | r = unit_file_search(c, i, paths, flags); |
893275df ZJS |
1628 | if (r == -ENOENT) |
1629 | /* Translate error code to highlight this specific case */ | |
1630 | return -ENOLINK; | |
0ec0deaa LP |
1631 | } |
1632 | ||
0155928c ZJS |
1633 | if (r < 0) |
1634 | return r; | |
83096483 LP |
1635 | } |
1636 | ||
0ec0deaa LP |
1637 | if (ret) |
1638 | *ret = i; | |
83096483 | 1639 | |
0ec0deaa LP |
1640 | return 0; |
1641 | } | |
83096483 | 1642 | |
ff56349d ZJS |
1643 | /** |
1644 | * Call install_info_add() with name_or_path as the path (if name_or_path starts with "/") | |
1645 | * or the name (otherwise). root_dir is prepended to the path. | |
1646 | */ | |
401017e0 LP |
1647 | static int install_info_add_auto( |
1648 | InstallContext *c, | |
1649 | const LookupPaths *paths, | |
1650 | const char *name_or_path, | |
1651 | UnitFileInstallInfo **ret) { | |
1652 | ||
1653 | assert(c); | |
1654 | assert(name_or_path); | |
1655 | ||
1656 | if (path_is_absolute(name_or_path)) { | |
1657 | const char *pp; | |
1658 | ||
1659 | pp = prefix_roota(paths->root_dir, name_or_path); | |
1660 | ||
19539807 | 1661 | return install_info_add(c, NULL, pp, false, ret); |
401017e0 | 1662 | } else |
19539807 | 1663 | return install_info_add(c, name_or_path, NULL, false, ret); |
401017e0 LP |
1664 | } |
1665 | ||
0ec0deaa LP |
1666 | static int install_info_discover( |
1667 | UnitFileScope scope, | |
1668 | InstallContext *c, | |
0ec0deaa LP |
1669 | const LookupPaths *paths, |
1670 | const char *name, | |
1671 | SearchFlags flags, | |
59108fbe ZJS |
1672 | UnitFileInstallInfo **ret, |
1673 | UnitFileChange **changes, | |
da6053d0 | 1674 | size_t *n_changes) { |
83096483 | 1675 | |
0ec0deaa LP |
1676 | UnitFileInstallInfo *i; |
1677 | int r; | |
83096483 | 1678 | |
0ec0deaa LP |
1679 | assert(c); |
1680 | assert(paths); | |
1681 | assert(name); | |
1682 | ||
401017e0 | 1683 | r = install_info_add_auto(c, paths, name, &i); |
59108fbe ZJS |
1684 | if (r >= 0) |
1685 | r = install_info_traverse(scope, c, paths, i, flags, ret); | |
83096483 | 1686 | |
59108fbe ZJS |
1687 | if (r < 0) |
1688 | unit_file_changes_add(changes, n_changes, r, name, NULL); | |
1689 | return r; | |
83096483 LP |
1690 | } |
1691 | ||
1e475a0a RB |
1692 | static int install_info_discover_and_check( |
1693 | UnitFileScope scope, | |
1694 | InstallContext *c, | |
1695 | const LookupPaths *paths, | |
1696 | const char *name, | |
1697 | SearchFlags flags, | |
1698 | UnitFileInstallInfo **ret, | |
1699 | UnitFileChange **changes, | |
1700 | size_t *n_changes) { | |
1701 | ||
1702 | int r; | |
1703 | ||
1704 | r = install_info_discover(scope, c, paths, name, flags, ret, changes, n_changes); | |
1705 | if (r < 0) | |
1706 | return r; | |
1707 | ||
1708 | return install_info_may_process(ret ? *ret : NULL, paths, changes, n_changes); | |
1709 | } | |
1710 | ||
83096483 | 1711 | static int install_info_symlink_alias( |
cab6235f | 1712 | UnitFileInstallInfo *i, |
401017e0 | 1713 | const LookupPaths *paths, |
83096483 LP |
1714 | const char *config_path, |
1715 | bool force, | |
1716 | UnitFileChange **changes, | |
da6053d0 | 1717 | size_t *n_changes) { |
83096483 LP |
1718 | |
1719 | char **s; | |
1720 | int r = 0, q; | |
1721 | ||
1722 | assert(i); | |
401017e0 | 1723 | assert(paths); |
83096483 LP |
1724 | assert(config_path); |
1725 | ||
1726 | STRV_FOREACH(s, i->aliases) { | |
3d0205f2 | 1727 | |
7fd1b19b | 1728 | _cleanup_free_ char *alias_path = NULL, *dst = NULL; |
83096483 | 1729 | |
19f6d710 LP |
1730 | q = install_full_printf(i, *s, &dst); |
1731 | if (q < 0) | |
1732 | return q; | |
83096483 | 1733 | |
3d0205f2 JR |
1734 | if (unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE) && |
1735 | !unit_name_is_valid(dst, UNIT_NAME_TEMPLATE) && | |
1736 | !i->default_instance) { | |
1737 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Aliases for templates without DefaultInstance must be templates."); | |
1738 | } | |
1739 | ||
1740 | if (unit_name_is_valid(i->name, UNIT_NAME_INSTANCE | UNIT_NAME_TEMPLATE) && | |
1741 | !unit_name_is_valid(dst, UNIT_NAME_TEMPLATE | UNIT_NAME_INSTANCE)) { | |
1742 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Aliases for template instances must be a templates or template instances containing the instance name."); | |
1743 | } | |
1744 | ||
1745 | if (unit_name_is_valid(i->name, UNIT_NAME_INSTANCE | UNIT_NAME_TEMPLATE) && | |
1746 | unit_name_is_valid(dst, UNIT_NAME_INSTANCE)) { | |
1747 | _cleanup_free_ char *src_inst = NULL, *dst_inst = NULL; | |
1748 | ||
1749 | q = unit_name_to_instance(i->name, &src_inst); | |
1750 | if (q < 0) | |
1751 | return q; | |
1752 | ||
1753 | q = unit_name_to_instance(dst, &dst_inst); | |
1754 | if (q < 0) | |
1755 | return q; | |
1756 | if (!strstr(dst_inst, src_inst?src_inst:i->default_instance)) | |
1757 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Aliases for template instances must be a templates or template instances containing the instance name."); | |
1758 | } | |
1759 | ||
1760 | if (unit_name_is_valid(i->name, UNIT_NAME_INSTANCE) && unit_name_is_valid(dst, UNIT_NAME_TEMPLATE)) { | |
1761 | _cleanup_free_ char *s_copy = NULL, *instance = NULL; | |
1762 | q = unit_name_to_instance(i->name,&instance); | |
1763 | if (q < 0) | |
1764 | return q; | |
1765 | ||
1766 | q = unit_name_replace_instance(dst,instance,&s_copy); | |
1767 | if (q < 0) | |
1768 | return q; | |
1769 | free_and_replace(dst, s_copy); | |
1770 | } | |
1771 | ||
7584d236 | 1772 | alias_path = path_make_absolute(dst, config_path); |
83096483 LP |
1773 | if (!alias_path) |
1774 | return -ENOMEM; | |
1775 | ||
60bec8e4 | 1776 | q = create_symlink(paths, i->path, alias_path, force, changes, n_changes); |
83096483 LP |
1777 | if (r == 0) |
1778 | r = q; | |
3d0205f2 JR |
1779 | |
1780 | /* if we are a template with a DefaultInstance and we target a template, also create a link from the DefaultInstance*/ | |
1781 | if (unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE) && unit_name_is_valid(dst, UNIT_NAME_TEMPLATE) && i->default_instance) { | |
1782 | _cleanup_free_ char *s_copy = NULL,*final_path = NULL; | |
1783 | ||
1784 | q = unit_name_replace_instance(dst,i->default_instance,&s_copy); | |
1785 | if (q < 0) | |
1786 | return q; | |
1787 | final_path = path_make_absolute(s_copy, config_path); | |
1788 | if (!final_path) | |
1789 | return -ENOMEM; | |
1790 | q = create_symlink(paths, i->path, final_path, force, changes, n_changes); | |
1791 | if (r == 0) | |
1792 | r = q; | |
1793 | } | |
1794 | ||
83096483 LP |
1795 | } |
1796 | ||
1797 | return r; | |
1798 | } | |
1799 | ||
1800 | static int install_info_symlink_wants( | |
cab6235f | 1801 | UnitFileInstallInfo *i, |
401017e0 | 1802 | const LookupPaths *paths, |
83096483 | 1803 | const char *config_path, |
d54c4993 LP |
1804 | char **list, |
1805 | const char *suffix, | |
83096483 | 1806 | UnitFileChange **changes, |
da6053d0 | 1807 | size_t *n_changes) { |
83096483 | 1808 | |
d54c4993 LP |
1809 | _cleanup_free_ char *buf = NULL; |
1810 | const char *n; | |
83096483 LP |
1811 | char **s; |
1812 | int r = 0, q; | |
1813 | ||
1814 | assert(i); | |
401017e0 | 1815 | assert(paths); |
83096483 LP |
1816 | assert(config_path); |
1817 | ||
047d91f9 ZJS |
1818 | if (strv_isempty(list)) |
1819 | return 0; | |
1820 | ||
e4086ae0 | 1821 | if (unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE)) { |
047d91f9 ZJS |
1822 | UnitFileInstallInfo instance = { |
1823 | .type = _UNIT_FILE_TYPE_INVALID, | |
1824 | }; | |
1825 | _cleanup_free_ char *path = NULL; | |
0a327d75 | 1826 | |
e4086ae0 LP |
1827 | /* If this is a template, and we have no instance, don't do anything */ |
1828 | if (!i->default_instance) | |
1829 | return 1; | |
1830 | ||
7410616c LP |
1831 | r = unit_name_replace_instance(i->name, i->default_instance, &buf); |
1832 | if (r < 0) | |
1833 | return r; | |
83096483 | 1834 | |
047d91f9 ZJS |
1835 | instance.name = buf; |
1836 | r = unit_file_search(NULL, &instance, paths, SEARCH_FOLLOW_CONFIG_SYMLINKS); | |
1837 | if (r < 0) | |
1838 | return r; | |
1839 | ||
ae2a15bc | 1840 | path = TAKE_PTR(instance.path); |
047d91f9 ZJS |
1841 | |
1842 | if (instance.type == UNIT_FILE_TYPE_MASKED) { | |
1843 | unit_file_changes_add(changes, n_changes, -ERFKILL, path, NULL); | |
1844 | return -ERFKILL; | |
1845 | } | |
1846 | ||
d54c4993 LP |
1847 | n = buf; |
1848 | } else | |
1849 | n = i->name; | |
78d54bd4 | 1850 | |
d54c4993 | 1851 | STRV_FOREACH(s, list) { |
7fd1b19b | 1852 | _cleanup_free_ char *path = NULL, *dst = NULL; |
78d54bd4 | 1853 | |
19f6d710 LP |
1854 | q = install_full_printf(i, *s, &dst); |
1855 | if (q < 0) | |
1856 | return q; | |
7584d236 | 1857 | |
7410616c | 1858 | if (!unit_name_is_valid(dst, UNIT_NAME_ANY)) { |
d7ceaf72 ZJS |
1859 | unit_file_changes_add(changes, n_changes, -EUCLEAN, dst, NULL); |
1860 | r = -EUCLEAN; | |
78d54bd4 LP |
1861 | continue; |
1862 | } | |
1863 | ||
605405c6 | 1864 | path = strjoin(config_path, "/", dst, suffix, n); |
d54c4993 | 1865 | if (!path) |
78d54bd4 LP |
1866 | return -ENOMEM; |
1867 | ||
60bec8e4 | 1868 | q = create_symlink(paths, i->path, path, true, changes, n_changes); |
78d54bd4 LP |
1869 | if (r == 0) |
1870 | r = q; | |
1871 | } | |
1872 | ||
1873 | return r; | |
1874 | } | |
1875 | ||
83096483 | 1876 | static int install_info_symlink_link( |
cab6235f | 1877 | UnitFileInstallInfo *i, |
a8ffe6fb | 1878 | const LookupPaths *paths, |
83096483 LP |
1879 | const char *config_path, |
1880 | bool force, | |
1881 | UnitFileChange **changes, | |
da6053d0 | 1882 | size_t *n_changes) { |
83096483 | 1883 | |
7fd1b19b | 1884 | _cleanup_free_ char *path = NULL; |
1dacfd2a | 1885 | int r; |
83096483 LP |
1886 | |
1887 | assert(i); | |
1888 | assert(paths); | |
1889 | assert(config_path); | |
1890 | assert(i->path); | |
1891 | ||
32c0ed7b | 1892 | r = in_search_path(paths, i->path); |
fe4aede9 | 1893 | if (r < 0) |
83096483 | 1894 | return r; |
fe4aede9 ZJS |
1895 | if (r > 0) |
1896 | return 0; | |
83096483 | 1897 | |
657ee2d8 | 1898 | path = path_join(config_path, i->name); |
1dacfd2a | 1899 | if (!path) |
83096483 LP |
1900 | return -ENOMEM; |
1901 | ||
60bec8e4 | 1902 | return create_symlink(paths, i->path, path, force, changes, n_changes); |
83096483 LP |
1903 | } |
1904 | ||
1905 | static int install_info_apply( | |
cab6235f | 1906 | UnitFileInstallInfo *i, |
a8ffe6fb | 1907 | const LookupPaths *paths, |
83096483 LP |
1908 | const char *config_path, |
1909 | bool force, | |
1910 | UnitFileChange **changes, | |
da6053d0 | 1911 | size_t *n_changes) { |
83096483 LP |
1912 | |
1913 | int r, q; | |
1914 | ||
1915 | assert(i); | |
1916 | assert(paths); | |
1917 | assert(config_path); | |
1918 | ||
0ec0deaa LP |
1919 | if (i->type != UNIT_FILE_TYPE_REGULAR) |
1920 | return 0; | |
1921 | ||
401017e0 | 1922 | r = install_info_symlink_alias(i, paths, config_path, force, changes, n_changes); |
83096483 | 1923 | |
29380daf | 1924 | q = install_info_symlink_wants(i, paths, config_path, i->wanted_by, ".wants/", changes, n_changes); |
83096483 LP |
1925 | if (r == 0) |
1926 | r = q; | |
1927 | ||
29380daf | 1928 | q = install_info_symlink_wants(i, paths, config_path, i->required_by, ".requires/", changes, n_changes); |
78d54bd4 LP |
1929 | if (r == 0) |
1930 | r = q; | |
1931 | ||
e4bb56c7 | 1932 | q = install_info_symlink_link(i, paths, config_path, force, changes, n_changes); |
fe4aede9 ZJS |
1933 | /* Do not count links to the unit file towards the "carries_install_info" count */ |
1934 | if (r == 0 && q < 0) | |
83096483 LP |
1935 | r = q; |
1936 | ||
1937 | return r; | |
1938 | } | |
1939 | ||
1940 | static int install_context_apply( | |
0ec0deaa | 1941 | UnitFileScope scope, |
83096483 | 1942 | InstallContext *c, |
a8ffe6fb | 1943 | const LookupPaths *paths, |
83096483 | 1944 | const char *config_path, |
83096483 | 1945 | bool force, |
0ec0deaa | 1946 | SearchFlags flags, |
83096483 | 1947 | UnitFileChange **changes, |
da6053d0 | 1948 | size_t *n_changes) { |
83096483 | 1949 | |
cab6235f | 1950 | UnitFileInstallInfo *i; |
0ec0deaa | 1951 | int r; |
83096483 LP |
1952 | |
1953 | assert(c); | |
1954 | assert(paths); | |
1955 | assert(config_path); | |
1956 | ||
0ec0deaa | 1957 | if (ordered_hashmap_isempty(c->will_process)) |
d25e100b | 1958 | return 0; |
83096483 | 1959 | |
0ec0deaa | 1960 | r = ordered_hashmap_ensure_allocated(&c->have_processed, &string_hash_ops); |
d25e100b LP |
1961 | if (r < 0) |
1962 | return r; | |
83096483 | 1963 | |
2d5c93c7 | 1964 | r = 0; |
0ec0deaa LP |
1965 | while ((i = ordered_hashmap_first(c->will_process))) { |
1966 | int q; | |
83096483 | 1967 | |
0ec0deaa LP |
1968 | q = ordered_hashmap_move_one(c->have_processed, c->will_process, i->name); |
1969 | if (q < 0) | |
1970 | return q; | |
83096483 | 1971 | |
459500a3 ZJS |
1972 | q = install_info_traverse(scope, c, paths, i, flags, NULL); |
1973 | if (q < 0) { | |
56a4ce24 | 1974 | unit_file_changes_add(changes, n_changes, q, i->name, NULL); |
459500a3 | 1975 | return q; |
db093eed | 1976 | } |
0ec0deaa | 1977 | |
f1651715 | 1978 | /* We can attempt to process a masked unit when a different unit |
047d91f9 | 1979 | * that we were processing specifies it in Also=. */ |
f1651715 ZJS |
1980 | if (i->type == UNIT_FILE_TYPE_MASKED) { |
1981 | unit_file_changes_add(changes, n_changes, UNIT_FILE_IS_MASKED, i->path, NULL); | |
1982 | if (r >= 0) | |
047d91f9 ZJS |
1983 | /* Assume that something *could* have been enabled here, |
1984 | * avoid "empty [Install] section" warning. */ | |
f1651715 ZJS |
1985 | r += 1; |
1986 | continue; | |
1987 | } | |
1988 | ||
0ec0deaa LP |
1989 | if (i->type != UNIT_FILE_TYPE_REGULAR) |
1990 | continue; | |
83096483 | 1991 | |
e4bb56c7 | 1992 | q = install_info_apply(i, paths, config_path, force, changes, n_changes); |
0ec0deaa LP |
1993 | if (r >= 0) { |
1994 | if (q < 0) | |
1995 | r = q; | |
1996 | else | |
596fc263 | 1997 | r += q; |
0ec0deaa | 1998 | } |
83096483 LP |
1999 | } |
2000 | ||
2001 | return r; | |
2002 | } | |
2003 | ||
2004 | static int install_context_mark_for_removal( | |
0ec0deaa | 2005 | UnitFileScope scope, |
83096483 | 2006 | InstallContext *c, |
a8ffe6fb | 2007 | const LookupPaths *paths, |
83096483 | 2008 | Set **remove_symlinks_to, |
1830ac51 | 2009 | const char *config_path, |
637d6e5b | 2010 | UnitFileChange **changes, |
da6053d0 | 2011 | size_t *n_changes) { |
83096483 | 2012 | |
cab6235f | 2013 | UnitFileInstallInfo *i; |
0ec0deaa | 2014 | int r; |
83096483 LP |
2015 | |
2016 | assert(c); | |
2017 | assert(paths); | |
1830ac51 | 2018 | assert(config_path); |
83096483 LP |
2019 | |
2020 | /* Marks all items for removal */ | |
2021 | ||
0ec0deaa | 2022 | if (ordered_hashmap_isempty(c->will_process)) |
d25e100b | 2023 | return 0; |
83096483 | 2024 | |
0ec0deaa | 2025 | r = ordered_hashmap_ensure_allocated(&c->have_processed, &string_hash_ops); |
d25e100b LP |
2026 | if (r < 0) |
2027 | return r; | |
83096483 | 2028 | |
0ec0deaa | 2029 | while ((i = ordered_hashmap_first(c->will_process))) { |
83096483 | 2030 | |
0ec0deaa LP |
2031 | r = ordered_hashmap_move_one(c->have_processed, c->will_process, i->name); |
2032 | if (r < 0) | |
83096483 | 2033 | return r; |
29283ea4 | 2034 | |
e4bb56c7 | 2035 | r = install_info_traverse(scope, c, paths, i, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, NULL); |
19539807 | 2036 | if (r == -ENOLINK) { |
637d6e5b LP |
2037 | log_debug_errno(r, "Name %s leads to a dangling symlink, removing name.", i->name); |
2038 | unit_file_changes_add(changes, n_changes, UNIT_FILE_IS_DANGLING, i->path ?: i->name, NULL); | |
2039 | } else if (r == -ENOENT) { | |
2040 | ||
2041 | if (i->auxiliary) /* some unit specified in Also= or similar is missing */ | |
2042 | log_debug_errno(r, "Auxiliary unit of %s not found, removing name.", i->name); | |
2043 | else { | |
2044 | log_debug_errno(r, "Unit %s not found, removing name.", i->name); | |
2045 | unit_file_changes_add(changes, n_changes, r, i->path ?: i->name, NULL); | |
2046 | } | |
0ec0deaa | 2047 | |
637d6e5b LP |
2048 | } else if (r < 0) { |
2049 | log_debug_errno(r, "Failed to find unit %s, removing name: %m", i->name); | |
2050 | unit_file_changes_add(changes, n_changes, r, i->path ?: i->name, NULL); | |
2051 | } else if (i->type == UNIT_FILE_TYPE_MASKED) { | |
2052 | log_debug("Unit file %s is masked, ignoring.", i->name); | |
2053 | unit_file_changes_add(changes, n_changes, UNIT_FILE_IS_MASKED, i->path ?: i->name, NULL); | |
2054 | continue; | |
2055 | } else if (i->type != UNIT_FILE_TYPE_REGULAR) { | |
2056 | log_debug("Unit %s has type %s, ignoring.", i->name, unit_file_type_to_string(i->type) ?: "invalid"); | |
0ec0deaa | 2057 | continue; |
64f9280e | 2058 | } |
0ec0deaa LP |
2059 | |
2060 | r = mark_symlink_for_removal(remove_symlinks_to, i->name); | |
2061 | if (r < 0) | |
2062 | return r; | |
2063 | } | |
2064 | ||
2065 | return 0; | |
2066 | } | |
2067 | ||
2068 | int unit_file_mask( | |
2069 | UnitFileScope scope, | |
b3796dd8 | 2070 | UnitFileFlags flags, |
0ec0deaa LP |
2071 | const char *root_dir, |
2072 | char **files, | |
0ec0deaa | 2073 | UnitFileChange **changes, |
da6053d0 | 2074 | size_t *n_changes) { |
0ec0deaa | 2075 | |
8e766630 | 2076 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
e1c5c2b0 | 2077 | const char *config_path; |
0ec0deaa LP |
2078 | char **i; |
2079 | int r; | |
2080 | ||
2081 | assert(scope >= 0); | |
2082 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2083 | ||
4943d143 | 2084 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
0ec0deaa LP |
2085 | if (r < 0) |
2086 | return r; | |
2087 | ||
b3796dd8 | 2088 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
d0fd66a3 LP |
2089 | if (!config_path) |
2090 | return -ENXIO; | |
e1c5c2b0 | 2091 | |
0ec0deaa LP |
2092 | STRV_FOREACH(i, files) { |
2093 | _cleanup_free_ char *path = NULL; | |
2094 | int q; | |
2095 | ||
2096 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) { | |
2097 | if (r == 0) | |
2098 | r = -EINVAL; | |
2099 | continue; | |
2100 | } | |
2101 | ||
e1c5c2b0 | 2102 | path = path_make_absolute(*i, config_path); |
0ec0deaa LP |
2103 | if (!path) |
2104 | return -ENOMEM; | |
29283ea4 | 2105 | |
b3796dd8 | 2106 | q = create_symlink(&paths, "/dev/null", path, !!(flags & UNIT_FILE_FORCE), changes, n_changes); |
0ec0deaa | 2107 | if (q < 0 && r >= 0) |
83096483 LP |
2108 | r = q; |
2109 | } | |
2110 | ||
2111 | return r; | |
2112 | } | |
2113 | ||
0ec0deaa LP |
2114 | int unit_file_unmask( |
2115 | UnitFileScope scope, | |
b3796dd8 | 2116 | UnitFileFlags flags, |
0ec0deaa LP |
2117 | const char *root_dir, |
2118 | char **files, | |
2119 | UnitFileChange **changes, | |
da6053d0 | 2120 | size_t *n_changes) { |
0ec0deaa | 2121 | |
8e766630 | 2122 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
0ec0deaa | 2123 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; |
dc7dd61d | 2124 | _cleanup_strv_free_ char **todo = NULL; |
0ec0deaa | 2125 | size_t n_todo = 0, n_allocated = 0; |
e1c5c2b0 | 2126 | const char *config_path; |
0ec0deaa | 2127 | char **i; |
1830ac51 | 2128 | bool dry_run; |
0ec0deaa LP |
2129 | int r, q; |
2130 | ||
2131 | assert(scope >= 0); | |
2132 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2133 | ||
4943d143 | 2134 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
0ec0deaa LP |
2135 | if (r < 0) |
2136 | return r; | |
2137 | ||
1830ac51 MB |
2138 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
2139 | if (!config_path) | |
2140 | return -ENXIO; | |
2141 | ||
2142 | dry_run = !!(flags & UNIT_FILE_DRY_RUN); | |
2143 | ||
0ec0deaa | 2144 | STRV_FOREACH(i, files) { |
1830ac51 MB |
2145 | _cleanup_free_ char *path = NULL; |
2146 | ||
0ec0deaa LP |
2147 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) |
2148 | return -EINVAL; | |
2149 | ||
1830ac51 MB |
2150 | path = path_make_absolute(*i, config_path); |
2151 | if (!path) | |
2152 | return -ENOMEM; | |
0ec0deaa | 2153 | |
1830ac51 MB |
2154 | r = null_or_empty_path(path); |
2155 | if (r == -ENOENT) | |
2156 | continue; | |
2157 | if (r < 0) | |
2158 | return r; | |
2159 | if (r == 0) | |
2160 | continue; | |
0ec0deaa | 2161 | |
1830ac51 MB |
2162 | if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2)) |
2163 | return -ENOMEM; | |
d054eae6 | 2164 | |
1830ac51 MB |
2165 | todo[n_todo] = strdup(*i); |
2166 | if (!todo[n_todo]) | |
2167 | return -ENOMEM; | |
4910b350 | 2168 | |
1830ac51 | 2169 | n_todo++; |
0ec0deaa LP |
2170 | } |
2171 | ||
2172 | strv_uniq(todo); | |
2173 | ||
2174 | r = 0; | |
1830ac51 MB |
2175 | STRV_FOREACH(i, todo) { |
2176 | _cleanup_free_ char *path = NULL; | |
2177 | const char *rp; | |
0ec0deaa | 2178 | |
1830ac51 MB |
2179 | path = path_make_absolute(*i, config_path); |
2180 | if (!path) | |
2181 | return -ENOMEM; | |
4910b350 | 2182 | |
1830ac51 MB |
2183 | if (!dry_run && unlink(path) < 0) { |
2184 | if (errno != ENOENT) { | |
2185 | if (r >= 0) | |
2186 | r = -errno; | |
2187 | unit_file_changes_add(changes, n_changes, -errno, path, NULL); | |
af3d8113 | 2188 | } |
0ec0deaa | 2189 | |
1830ac51 | 2190 | continue; |
4910b350 | 2191 | } |
401017e0 | 2192 | |
1830ac51 MB |
2193 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, path, NULL); |
2194 | ||
2195 | rp = skip_root(&paths, path); | |
2196 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: path); | |
2197 | if (q < 0) | |
2198 | return q; | |
0ec0deaa LP |
2199 | } |
2200 | ||
1830ac51 MB |
2201 | q = remove_marked_symlinks(remove_symlinks_to, config_path, &paths, dry_run, changes, n_changes); |
2202 | if (r >= 0) | |
2203 | r = q; | |
2204 | ||
0ec0deaa LP |
2205 | return r; |
2206 | } | |
2207 | ||
2208 | int unit_file_link( | |
e94937df | 2209 | UnitFileScope scope, |
b3796dd8 | 2210 | UnitFileFlags flags, |
e94937df LN |
2211 | const char *root_dir, |
2212 | char **files, | |
e94937df | 2213 | UnitFileChange **changes, |
da6053d0 | 2214 | size_t *n_changes) { |
e94937df | 2215 | |
8e766630 | 2216 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
8af35ba6 | 2217 | _cleanup_strv_free_ char **todo = NULL; |
0ec0deaa | 2218 | size_t n_todo = 0, n_allocated = 0; |
e1c5c2b0 | 2219 | const char *config_path; |
e94937df | 2220 | char **i; |
0ec0deaa | 2221 | int r, q; |
e94937df LN |
2222 | |
2223 | assert(scope >= 0); | |
2224 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2225 | ||
4943d143 | 2226 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
e94937df LN |
2227 | if (r < 0) |
2228 | return r; | |
2229 | ||
b3796dd8 | 2230 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
d0fd66a3 LP |
2231 | if (!config_path) |
2232 | return -ENXIO; | |
e94937df LN |
2233 | |
2234 | STRV_FOREACH(i, files) { | |
0ec0deaa LP |
2235 | _cleanup_free_ char *full = NULL; |
2236 | struct stat st; | |
2237 | char *fn; | |
e94937df | 2238 | |
0ec0deaa LP |
2239 | if (!path_is_absolute(*i)) |
2240 | return -EINVAL; | |
e94937df | 2241 | |
0ec0deaa LP |
2242 | fn = basename(*i); |
2243 | if (!unit_name_is_valid(fn, UNIT_NAME_ANY)) | |
2244 | return -EINVAL; | |
2245 | ||
c6134d3e | 2246 | full = path_join(paths.root_dir, *i); |
0ec0deaa LP |
2247 | if (!full) |
2248 | return -ENOMEM; | |
2249 | ||
2250 | if (lstat(full, &st) < 0) | |
2251 | return -errno; | |
3cc44114 LP |
2252 | r = stat_verify_regular(&st); |
2253 | if (r < 0) | |
2254 | return r; | |
0ec0deaa | 2255 | |
32c0ed7b | 2256 | q = in_search_path(&paths, *i); |
0ec0deaa LP |
2257 | if (q < 0) |
2258 | return q; | |
2259 | if (q > 0) | |
2260 | continue; | |
2261 | ||
2262 | if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2)) | |
2263 | return -ENOMEM; | |
2264 | ||
8af35ba6 EV |
2265 | todo[n_todo] = strdup(*i); |
2266 | if (!todo[n_todo]) | |
2267 | return -ENOMEM; | |
2268 | ||
2269 | n_todo++; | |
e94937df LN |
2270 | } |
2271 | ||
0ec0deaa | 2272 | strv_uniq(todo); |
e94937df | 2273 | |
0ec0deaa LP |
2274 | r = 0; |
2275 | STRV_FOREACH(i, todo) { | |
401017e0 | 2276 | _cleanup_free_ char *new_path = NULL; |
0ec0deaa | 2277 | |
401017e0 LP |
2278 | new_path = path_make_absolute(basename(*i), config_path); |
2279 | if (!new_path) | |
0ec0deaa LP |
2280 | return -ENOMEM; |
2281 | ||
b3796dd8 | 2282 | q = create_symlink(&paths, *i, new_path, !!(flags & UNIT_FILE_FORCE), changes, n_changes); |
0ec0deaa LP |
2283 | if (q < 0 && r >= 0) |
2284 | r = q; | |
2d5c93c7 MS |
2285 | } |
2286 | ||
0ec0deaa LP |
2287 | return r; |
2288 | } | |
2289 | ||
344ca755 LP |
2290 | static int path_shall_revert(const LookupPaths *paths, const char *path) { |
2291 | int r; | |
2292 | ||
2293 | assert(paths); | |
2294 | assert(path); | |
2295 | ||
2296 | /* Checks whether the path is one where the drop-in directories shall be removed. */ | |
2297 | ||
dfead90d | 2298 | r = path_is_config(paths, path, true); |
344ca755 LP |
2299 | if (r != 0) |
2300 | return r; | |
2301 | ||
2302 | r = path_is_control(paths, path); | |
2303 | if (r != 0) | |
2304 | return r; | |
2305 | ||
2306 | return path_is_transient(paths, path); | |
2307 | } | |
2308 | ||
2309 | int unit_file_revert( | |
2310 | UnitFileScope scope, | |
2311 | const char *root_dir, | |
2312 | char **files, | |
2313 | UnitFileChange **changes, | |
da6053d0 | 2314 | size_t *n_changes) { |
344ca755 LP |
2315 | |
2316 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
8e766630 | 2317 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
344ca755 LP |
2318 | _cleanup_strv_free_ char **todo = NULL; |
2319 | size_t n_todo = 0, n_allocated = 0; | |
2320 | char **i; | |
2321 | int r, q; | |
2322 | ||
2323 | /* Puts a unit file back into vendor state. This means: | |
2324 | * | |
2325 | * a) we remove all drop-in snippets added by the user ("config"), add to transient units ("transient"), and | |
2326 | * added via "systemctl set-property" ("control"), but not if the drop-in is generated ("generated"). | |
2327 | * | |
2328 | * c) if there's a vendor unit file (i.e. one in /usr) we remove any configured overriding unit files (i.e. in | |
2329 | * "config", but not in "transient" or "control" or even "generated"). | |
2330 | * | |
4f25723c | 2331 | * We remove all that in both the runtime and the persistent directories, if that applies. |
344ca755 LP |
2332 | */ |
2333 | ||
2334 | r = lookup_paths_init(&paths, scope, 0, root_dir); | |
2335 | if (r < 0) | |
2336 | return r; | |
2337 | ||
2338 | STRV_FOREACH(i, files) { | |
2339 | bool has_vendor = false; | |
2340 | char **p; | |
2341 | ||
2342 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) | |
2343 | return -EINVAL; | |
2344 | ||
2345 | STRV_FOREACH(p, paths.search_path) { | |
2346 | _cleanup_free_ char *path = NULL, *dropin = NULL; | |
2347 | struct stat st; | |
2348 | ||
2349 | path = path_make_absolute(*i, *p); | |
2350 | if (!path) | |
2351 | return -ENOMEM; | |
2352 | ||
2353 | r = lstat(path, &st); | |
2354 | if (r < 0) { | |
2355 | if (errno != ENOENT) | |
2356 | return -errno; | |
2357 | } else if (S_ISREG(st.st_mode)) { | |
2358 | /* Check if there's a vendor version */ | |
2359 | r = path_is_vendor(&paths, path); | |
2360 | if (r < 0) | |
2361 | return r; | |
2362 | if (r > 0) | |
2363 | has_vendor = true; | |
2364 | } | |
2365 | ||
b910cc72 | 2366 | dropin = strjoin(path, ".d"); |
344ca755 LP |
2367 | if (!dropin) |
2368 | return -ENOMEM; | |
2369 | ||
2370 | r = lstat(dropin, &st); | |
2371 | if (r < 0) { | |
2372 | if (errno != ENOENT) | |
2373 | return -errno; | |
2374 | } else if (S_ISDIR(st.st_mode)) { | |
2375 | /* Remove the drop-ins */ | |
2376 | r = path_shall_revert(&paths, dropin); | |
2377 | if (r < 0) | |
2378 | return r; | |
2379 | if (r > 0) { | |
2380 | if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2)) | |
2381 | return -ENOMEM; | |
2382 | ||
1cc6c93a | 2383 | todo[n_todo++] = TAKE_PTR(dropin); |
344ca755 LP |
2384 | } |
2385 | } | |
2386 | } | |
2387 | ||
2388 | if (!has_vendor) | |
2389 | continue; | |
2390 | ||
2391 | /* OK, there's a vendor version, hence drop all configuration versions */ | |
2392 | STRV_FOREACH(p, paths.search_path) { | |
2393 | _cleanup_free_ char *path = NULL; | |
2394 | struct stat st; | |
2395 | ||
2396 | path = path_make_absolute(*i, *p); | |
2397 | if (!path) | |
2398 | return -ENOMEM; | |
2399 | ||
2400 | r = lstat(path, &st); | |
2401 | if (r < 0) { | |
2402 | if (errno != ENOENT) | |
2403 | return -errno; | |
2404 | } else if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) { | |
dfead90d | 2405 | r = path_is_config(&paths, path, true); |
344ca755 LP |
2406 | if (r < 0) |
2407 | return r; | |
2408 | if (r > 0) { | |
2409 | if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2)) | |
2410 | return -ENOMEM; | |
2411 | ||
1cc6c93a | 2412 | todo[n_todo++] = TAKE_PTR(path); |
344ca755 LP |
2413 | } |
2414 | } | |
2415 | } | |
2416 | } | |
2417 | ||
2418 | strv_uniq(todo); | |
2419 | ||
2420 | r = 0; | |
2421 | STRV_FOREACH(i, todo) { | |
2422 | _cleanup_strv_free_ char **fs = NULL; | |
2423 | const char *rp; | |
2424 | char **j; | |
2425 | ||
2426 | (void) get_files_in_directory(*i, &fs); | |
2427 | ||
2428 | q = rm_rf(*i, REMOVE_ROOT|REMOVE_PHYSICAL); | |
2429 | if (q < 0 && q != -ENOENT && r >= 0) { | |
2430 | r = q; | |
2431 | continue; | |
2432 | } | |
2433 | ||
2434 | STRV_FOREACH(j, fs) { | |
2435 | _cleanup_free_ char *t = NULL; | |
2436 | ||
657ee2d8 | 2437 | t = path_join(*i, *j); |
344ca755 LP |
2438 | if (!t) |
2439 | return -ENOMEM; | |
2440 | ||
2441 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, t, NULL); | |
2442 | } | |
2443 | ||
2444 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, *i, NULL); | |
2445 | ||
2446 | rp = skip_root(&paths, *i); | |
2447 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: *i); | |
2448 | if (q < 0) | |
2449 | return q; | |
2450 | } | |
2451 | ||
3b3557c4 | 2452 | q = remove_marked_symlinks(remove_symlinks_to, paths.runtime_config, &paths, false, changes, n_changes); |
344ca755 LP |
2453 | if (r >= 0) |
2454 | r = q; | |
2455 | ||
3b3557c4 | 2456 | q = remove_marked_symlinks(remove_symlinks_to, paths.persistent_config, &paths, false, changes, n_changes); |
344ca755 LP |
2457 | if (r >= 0) |
2458 | r = q; | |
2459 | ||
2460 | return r; | |
2461 | } | |
2462 | ||
0ec0deaa LP |
2463 | int unit_file_add_dependency( |
2464 | UnitFileScope scope, | |
b3796dd8 | 2465 | UnitFileFlags flags, |
0ec0deaa LP |
2466 | const char *root_dir, |
2467 | char **files, | |
2468 | const char *target, | |
2469 | UnitDependency dep, | |
0ec0deaa | 2470 | UnitFileChange **changes, |
da6053d0 | 2471 | size_t *n_changes) { |
0ec0deaa | 2472 | |
8e766630 | 2473 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
0ec0deaa | 2474 | _cleanup_(install_context_done) InstallContext c = {}; |
0ec0deaa | 2475 | UnitFileInstallInfo *i, *target_info; |
e1c5c2b0 | 2476 | const char *config_path; |
0ec0deaa LP |
2477 | char **f; |
2478 | int r; | |
2479 | ||
2480 | assert(scope >= 0); | |
2481 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2482 | assert(target); | |
2483 | ||
2484 | if (!IN_SET(dep, UNIT_WANTS, UNIT_REQUIRES)) | |
2485 | return -EINVAL; | |
2486 | ||
2487 | if (!unit_name_is_valid(target, UNIT_NAME_ANY)) | |
2488 | return -EINVAL; | |
2489 | ||
4943d143 | 2490 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
0ec0deaa LP |
2491 | if (r < 0) |
2492 | return r; | |
2493 | ||
b3796dd8 | 2494 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
d0fd66a3 LP |
2495 | if (!config_path) |
2496 | return -ENXIO; | |
0ec0deaa | 2497 | |
1e475a0a RB |
2498 | r = install_info_discover_and_check(scope, &c, &paths, target, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2499 | &target_info, changes, n_changes); | |
76adb5b8 LP |
2500 | if (r < 0) |
2501 | return r; | |
0ec0deaa LP |
2502 | |
2503 | assert(target_info->type == UNIT_FILE_TYPE_REGULAR); | |
e94937df | 2504 | |
0ec0deaa LP |
2505 | STRV_FOREACH(f, files) { |
2506 | char ***l; | |
2507 | ||
1e475a0a RB |
2508 | r = install_info_discover_and_check(scope, &c, &paths, *f, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2509 | &i, changes, n_changes); | |
76adb5b8 LP |
2510 | if (r < 0) |
2511 | return r; | |
0ec0deaa LP |
2512 | |
2513 | assert(i->type == UNIT_FILE_TYPE_REGULAR); | |
2514 | ||
2515 | /* We didn't actually load anything from the unit | |
2516 | * file, but instead just add in our new symlink to | |
2517 | * create. */ | |
e94937df LN |
2518 | |
2519 | if (dep == UNIT_WANTS) | |
0ec0deaa | 2520 | l = &i->wanted_by; |
e94937df | 2521 | else |
0ec0deaa | 2522 | l = &i->required_by; |
e94937df | 2523 | |
0ec0deaa | 2524 | strv_free(*l); |
bea1a013 | 2525 | *l = strv_new(target_info->name); |
0ec0deaa LP |
2526 | if (!*l) |
2527 | return -ENOMEM; | |
e94937df LN |
2528 | } |
2529 | ||
b3796dd8 | 2530 | return install_context_apply(scope, &c, &paths, config_path, !!(flags & UNIT_FILE_FORCE), SEARCH_FOLLOW_CONFIG_SYMLINKS, changes, n_changes); |
e94937df LN |
2531 | } |
2532 | ||
83096483 LP |
2533 | int unit_file_enable( |
2534 | UnitFileScope scope, | |
b3796dd8 | 2535 | UnitFileFlags flags, |
83096483 | 2536 | const char *root_dir, |
7195aa42 | 2537 | char **files, |
83096483 | 2538 | UnitFileChange **changes, |
da6053d0 | 2539 | size_t *n_changes) { |
83096483 | 2540 | |
8e766630 | 2541 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
59ccf93d | 2542 | _cleanup_(install_context_done) InstallContext c = {}; |
e1c5c2b0 | 2543 | const char *config_path; |
0ec0deaa LP |
2544 | UnitFileInstallInfo *i; |
2545 | char **f; | |
83096483 LP |
2546 | int r; |
2547 | ||
2548 | assert(scope >= 0); | |
2549 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2550 | ||
4943d143 | 2551 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
83096483 LP |
2552 | if (r < 0) |
2553 | return r; | |
2554 | ||
b3796dd8 | 2555 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
d0fd66a3 LP |
2556 | if (!config_path) |
2557 | return -ENXIO; | |
83096483 | 2558 | |
0ec0deaa | 2559 | STRV_FOREACH(f, files) { |
1e475a0a RB |
2560 | r = install_info_discover_and_check(scope, &c, &paths, *f, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2561 | &i, changes, n_changes); | |
76adb5b8 LP |
2562 | if (r < 0) |
2563 | return r; | |
0ec0deaa LP |
2564 | |
2565 | assert(i->type == UNIT_FILE_TYPE_REGULAR); | |
83096483 LP |
2566 | } |
2567 | ||
729e3769 | 2568 | /* This will return the number of symlink rules that were |
d25e100b LP |
2569 | supposed to be created, not the ones actually created. This |
2570 | is useful to determine whether the passed files had any | |
2571 | installation data at all. */ | |
b91a3b02 | 2572 | |
b3796dd8 | 2573 | return install_context_apply(scope, &c, &paths, config_path, !!(flags & UNIT_FILE_FORCE), SEARCH_LOAD, changes, n_changes); |
83096483 LP |
2574 | } |
2575 | ||
2576 | int unit_file_disable( | |
2577 | UnitFileScope scope, | |
b3796dd8 | 2578 | UnitFileFlags flags, |
83096483 | 2579 | const char *root_dir, |
7195aa42 | 2580 | char **files, |
83096483 | 2581 | UnitFileChange **changes, |
da6053d0 | 2582 | size_t *n_changes) { |
83096483 | 2583 | |
8e766630 | 2584 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
59ccf93d | 2585 | _cleanup_(install_context_done) InstallContext c = {}; |
7fd1b19b | 2586 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; |
e1c5c2b0 | 2587 | const char *config_path; |
0ec0deaa LP |
2588 | char **i; |
2589 | int r; | |
83096483 LP |
2590 | |
2591 | assert(scope >= 0); | |
2592 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2593 | ||
4943d143 | 2594 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
83096483 LP |
2595 | if (r < 0) |
2596 | return r; | |
2597 | ||
1830ac51 MB |
2598 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
2599 | if (!config_path) | |
2600 | return -ENXIO; | |
2601 | ||
83096483 | 2602 | STRV_FOREACH(i, files) { |
0ec0deaa LP |
2603 | if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) |
2604 | return -EINVAL; | |
2605 | ||
19539807 | 2606 | r = install_info_add(&c, *i, NULL, false, NULL); |
83096483 | 2607 | if (r < 0) |
d9e5e694 | 2608 | return r; |
83096483 LP |
2609 | } |
2610 | ||
1830ac51 | 2611 | r = install_context_mark_for_removal(scope, &c, &paths, &remove_symlinks_to, config_path, changes, n_changes); |
0ec0deaa LP |
2612 | if (r < 0) |
2613 | return r; | |
83096483 | 2614 | |
1830ac51 | 2615 | return remove_marked_symlinks(remove_symlinks_to, config_path, &paths, !!(flags & UNIT_FILE_DRY_RUN), changes, n_changes); |
83096483 LP |
2616 | } |
2617 | ||
2618 | int unit_file_reenable( | |
2619 | UnitFileScope scope, | |
b3796dd8 | 2620 | UnitFileFlags flags, |
83096483 | 2621 | const char *root_dir, |
7195aa42 | 2622 | char **files, |
83096483 | 2623 | UnitFileChange **changes, |
da6053d0 | 2624 | size_t *n_changes) { |
0ec0deaa LP |
2625 | |
2626 | char **n; | |
92d430a9 | 2627 | int r; |
0ec0deaa | 2628 | size_t l, i; |
83096483 | 2629 | |
0ec0deaa LP |
2630 | /* First, we invoke the disable command with only the basename... */ |
2631 | l = strv_length(files); | |
2632 | n = newa(char*, l+1); | |
2633 | for (i = 0; i < l; i++) | |
2634 | n[i] = basename(files[i]); | |
2635 | n[i] = NULL; | |
2636 | ||
b3796dd8 | 2637 | r = unit_file_disable(scope, flags, root_dir, n, changes, n_changes); |
83096483 | 2638 | if (r < 0) |
d9e5e694 | 2639 | return r; |
83096483 | 2640 | |
0ec0deaa | 2641 | /* But the enable command with the full name */ |
b3796dd8 | 2642 | return unit_file_enable(scope, flags, root_dir, files, changes, n_changes); |
83096483 LP |
2643 | } |
2644 | ||
99504dd4 VP |
2645 | int unit_file_set_default( |
2646 | UnitFileScope scope, | |
b3796dd8 | 2647 | UnitFileFlags flags, |
99504dd4 | 2648 | const char *root_dir, |
0ec0deaa | 2649 | const char *name, |
99504dd4 | 2650 | UnitFileChange **changes, |
da6053d0 | 2651 | size_t *n_changes) { |
99504dd4 | 2652 | |
8e766630 | 2653 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
59ccf93d | 2654 | _cleanup_(install_context_done) InstallContext c = {}; |
0ec0deaa | 2655 | UnitFileInstallInfo *i; |
60bec8e4 | 2656 | const char *new_path; |
99504dd4 | 2657 | int r; |
99504dd4 VP |
2658 | |
2659 | assert(scope >= 0); | |
2660 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
0ec0deaa | 2661 | assert(name); |
99504dd4 | 2662 | |
401017e0 | 2663 | if (unit_name_to_type(name) != UNIT_TARGET) /* this also validates the name */ |
0ec0deaa LP |
2664 | return -EINVAL; |
2665 | if (streq(name, SPECIAL_DEFAULT_TARGET)) | |
99504dd4 VP |
2666 | return -EINVAL; |
2667 | ||
4943d143 | 2668 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
99504dd4 VP |
2669 | if (r < 0) |
2670 | return r; | |
2671 | ||
1e475a0a | 2672 | r = install_info_discover_and_check(scope, &c, &paths, name, 0, &i, changes, n_changes); |
76adb5b8 LP |
2673 | if (r < 0) |
2674 | return r; | |
99504dd4 | 2675 | |
401017e0 | 2676 | new_path = strjoina(paths.persistent_config, "/" SPECIAL_DEFAULT_TARGET); |
b3796dd8 | 2677 | return create_symlink(&paths, i->path, new_path, !!(flags & UNIT_FILE_FORCE), changes, n_changes); |
99504dd4 VP |
2678 | } |
2679 | ||
2680 | int unit_file_get_default( | |
2681 | UnitFileScope scope, | |
2682 | const char *root_dir, | |
2683 | char **name) { | |
2684 | ||
8e766630 | 2685 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
0ec0deaa LP |
2686 | _cleanup_(install_context_done) InstallContext c = {}; |
2687 | UnitFileInstallInfo *i; | |
2688 | char *n; | |
99504dd4 VP |
2689 | int r; |
2690 | ||
16ed0233 LP |
2691 | assert(scope >= 0); |
2692 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2693 | assert(name); | |
2694 | ||
4943d143 | 2695 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
0ec0deaa LP |
2696 | if (r < 0) |
2697 | return r; | |
99504dd4 | 2698 | |
59108fbe ZJS |
2699 | r = install_info_discover(scope, &c, &paths, SPECIAL_DEFAULT_TARGET, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2700 | &i, NULL, NULL); | |
0ec0deaa LP |
2701 | if (r < 0) |
2702 | return r; | |
af3d8113 | 2703 | r = install_info_may_process(i, &paths, NULL, 0); |
76adb5b8 LP |
2704 | if (r < 0) |
2705 | return r; | |
99504dd4 | 2706 | |
0ec0deaa LP |
2707 | n = strdup(i->name); |
2708 | if (!n) | |
2709 | return -ENOMEM; | |
99504dd4 | 2710 | |
0ec0deaa LP |
2711 | *name = n; |
2712 | return 0; | |
99504dd4 VP |
2713 | } |
2714 | ||
d6d98276 | 2715 | int unit_file_lookup_state( |
83096483 | 2716 | UnitFileScope scope, |
a8ffe6fb | 2717 | const LookupPaths *paths, |
0ec0deaa LP |
2718 | const char *name, |
2719 | UnitFileState *ret) { | |
83096483 | 2720 | |
0ec0deaa LP |
2721 | _cleanup_(install_context_done) InstallContext c = {}; |
2722 | UnitFileInstallInfo *i; | |
2723 | UnitFileState state; | |
2724 | int r; | |
83096483 | 2725 | |
a8ffe6fb | 2726 | assert(paths); |
0ec0deaa | 2727 | assert(name); |
83096483 | 2728 | |
7410616c | 2729 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
83096483 LP |
2730 | return -EINVAL; |
2731 | ||
59108fbe ZJS |
2732 | r = install_info_discover(scope, &c, paths, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2733 | &i, NULL, NULL); | |
0ec0deaa | 2734 | if (r < 0) |
3e8d06d9 ZJS |
2735 | return log_debug_errno(r, "Failed to discover unit %s: %m", name); |
2736 | ||
2737 | assert(IN_SET(i->type, UNIT_FILE_TYPE_REGULAR, UNIT_FILE_TYPE_MASKED)); | |
2738 | log_debug("Found unit %s at %s (%s)", name, strna(i->path), | |
2739 | i->type == UNIT_FILE_TYPE_REGULAR ? "regular file" : "mask"); | |
83096483 | 2740 | |
0ec0deaa LP |
2741 | /* Shortcut things, if the caller just wants to know if this unit exists. */ |
2742 | if (!ret) | |
2743 | return 0; | |
83096483 | 2744 | |
0ec0deaa | 2745 | switch (i->type) { |
67820a0c | 2746 | |
0ec0deaa | 2747 | case UNIT_FILE_TYPE_MASKED: |
dfead90d | 2748 | r = path_is_runtime(paths, i->path, true); |
385eb996 LP |
2749 | if (r < 0) |
2750 | return r; | |
2751 | ||
2752 | state = r > 0 ? UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED; | |
0ec0deaa | 2753 | break; |
83096483 | 2754 | |
0ec0deaa | 2755 | case UNIT_FILE_TYPE_REGULAR: |
f4dc1e65 | 2756 | r = path_is_generator(paths, i->path); |
f4139308 LP |
2757 | if (r < 0) |
2758 | return r; | |
2759 | if (r > 0) { | |
2760 | state = UNIT_FILE_GENERATED; | |
2761 | break; | |
2762 | } | |
2763 | ||
e4fca67f LP |
2764 | r = path_is_transient(paths, i->path); |
2765 | if (r < 0) | |
2766 | return r; | |
2767 | if (r > 0) { | |
2768 | state = UNIT_FILE_TRANSIENT; | |
2769 | break; | |
2770 | } | |
2771 | ||
5cd8ae31 ZJS |
2772 | /* Check if any of the Alias= symlinks have been created. |
2773 | * We ignore other aliases, and only check those that would | |
2774 | * be created by systemctl enable for this unit. */ | |
d2561cfd | 2775 | r = find_symlinks_in_scope(scope, paths, i, true, &state); |
d9b4b48f ZJS |
2776 | if (r < 0) |
2777 | return r; | |
2778 | if (r > 0) | |
2779 | break; | |
2780 | ||
2781 | /* Check if the file is known under other names. If it is, | |
2782 | * it might be in use. Report that as UNIT_FILE_INDIRECT. */ | |
d2561cfd | 2783 | r = find_symlinks_in_scope(scope, paths, i, false, &state); |
d9e5e694 ZJS |
2784 | if (r < 0) |
2785 | return r; | |
d9b4b48f ZJS |
2786 | if (r > 0) |
2787 | state = UNIT_FILE_INDIRECT; | |
2788 | else { | |
7a7ec2bf | 2789 | if (unit_file_install_info_has_rules(i)) |
0ec0deaa | 2790 | state = UNIT_FILE_DISABLED; |
7a7ec2bf | 2791 | else if (unit_file_install_info_has_also(i)) |
0ec0deaa LP |
2792 | state = UNIT_FILE_INDIRECT; |
2793 | else | |
2794 | state = UNIT_FILE_STATIC; | |
2795 | } | |
83096483 | 2796 | |
0ec0deaa LP |
2797 | break; |
2798 | ||
2799 | default: | |
e5369d1a | 2800 | assert_not_reached("Unexpected unit file type."); |
83096483 LP |
2801 | } |
2802 | ||
0ec0deaa LP |
2803 | *ret = state; |
2804 | return 0; | |
83096483 LP |
2805 | } |
2806 | ||
0ec0deaa | 2807 | int unit_file_get_state( |
a8ffe6fb ZJS |
2808 | UnitFileScope scope, |
2809 | const char *root_dir, | |
0ec0deaa LP |
2810 | const char *name, |
2811 | UnitFileState *ret) { | |
a8ffe6fb | 2812 | |
8e766630 | 2813 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
a8ffe6fb ZJS |
2814 | int r; |
2815 | ||
2816 | assert(scope >= 0); | |
2817 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2818 | assert(name); | |
2819 | ||
4943d143 | 2820 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
a8ffe6fb ZJS |
2821 | if (r < 0) |
2822 | return r; | |
2823 | ||
e4bb56c7 | 2824 | return unit_file_lookup_state(scope, &paths, name, ret); |
a8ffe6fb ZJS |
2825 | } |
2826 | ||
e735decc LP |
2827 | int unit_file_exists(UnitFileScope scope, const LookupPaths *paths, const char *name) { |
2828 | _cleanup_(install_context_done) InstallContext c = {}; | |
2829 | int r; | |
2830 | ||
2831 | assert(paths); | |
2832 | assert(name); | |
2833 | ||
2834 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) | |
2835 | return -EINVAL; | |
2836 | ||
59108fbe | 2837 | r = install_info_discover(scope, &c, paths, name, 0, NULL, NULL, NULL); |
e735decc LP |
2838 | if (r == -ENOENT) |
2839 | return 0; | |
2840 | if (r < 0) | |
2841 | return r; | |
2842 | ||
2843 | return 1; | |
2844 | } | |
2845 | ||
4c9565ee RB |
2846 | static int split_pattern_into_name_and_instances(const char *pattern, char **out_unit_name, char ***out_instances) { |
2847 | _cleanup_strv_free_ char **instances = NULL; | |
2848 | _cleanup_free_ char *unit_name = NULL; | |
2849 | int r; | |
2850 | ||
2851 | assert(pattern); | |
2852 | assert(out_instances); | |
2853 | assert(out_unit_name); | |
2854 | ||
82bd4da7 | 2855 | r = extract_first_word(&pattern, &unit_name, NULL, EXTRACT_RETAIN_ESCAPE); |
4c9565ee RB |
2856 | if (r < 0) |
2857 | return r; | |
2858 | ||
2859 | /* We handle the instances logic when unit name is extracted */ | |
2860 | if (pattern) { | |
2861 | /* We only create instances when a rule of templated unit | |
2862 | * is seen. A rule like enable foo@.service a b c will | |
2863 | * result in an array of (a, b, c) as instance names */ | |
2864 | if (!unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) | |
2865 | return -EINVAL; | |
2866 | ||
2867 | instances = strv_split(pattern, WHITESPACE); | |
2868 | if (!instances) | |
2869 | return -ENOMEM; | |
2870 | ||
2871 | *out_instances = TAKE_PTR(instances); | |
2872 | } | |
2873 | ||
2874 | *out_unit_name = TAKE_PTR(unit_name); | |
2875 | ||
2876 | return 0; | |
2877 | } | |
2878 | ||
e0b8a238 | 2879 | static int presets_find_config(UnitFileScope scope, const char *root_dir, char ***files) { |
10fd1d46 ZJS |
2880 | static const char* const system_dirs[] = {CONF_PATHS("systemd/system-preset"), NULL}; |
2881 | static const char* const user_dirs[] = {CONF_PATHS_USR("systemd/user-preset"), NULL}; | |
f7767d76 | 2882 | const char* const* dirs; |
83096483 LP |
2883 | |
2884 | assert(scope >= 0); | |
2885 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
0ec0deaa | 2886 | |
a05294ff | 2887 | if (scope == UNIT_FILE_SYSTEM) |
10fd1d46 | 2888 | dirs = system_dirs; |
a05294ff | 2889 | else if (IN_SET(scope, UNIT_FILE_GLOBAL, UNIT_FILE_USER)) |
10fd1d46 | 2890 | dirs = user_dirs; |
a05294ff | 2891 | else |
264afce0 | 2892 | assert_not_reached("Invalid unit file scope"); |
83096483 | 2893 | |
f7767d76 | 2894 | return conf_files_list_strv(files, ".preset", root_dir, 0, dirs); |
e0b8a238 ZJS |
2895 | } |
2896 | ||
2897 | static int read_presets(UnitFileScope scope, const char *root_dir, Presets *presets) { | |
2898 | _cleanup_(presets_freep) Presets ps = {}; | |
2899 | size_t n_allocated = 0; | |
2900 | _cleanup_strv_free_ char **files = NULL; | |
2901 | char **p; | |
2902 | int r; | |
2903 | ||
2904 | assert(scope >= 0); | |
2905 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
2906 | assert(presets); | |
2907 | ||
2908 | r = presets_find_config(scope, root_dir, &files); | |
83096483 LP |
2909 | if (r < 0) |
2910 | return r; | |
2911 | ||
cba2ef02 | 2912 | STRV_FOREACH(p, files) { |
7fd1b19b | 2913 | _cleanup_fclose_ FILE *f; |
d544d1a4 | 2914 | int n = 0; |
83096483 | 2915 | |
cba2ef02 | 2916 | f = fopen(*p, "re"); |
83096483 LP |
2917 | if (!f) { |
2918 | if (errno == ENOENT) | |
2919 | continue; | |
2920 | ||
d9e5e694 | 2921 | return -errno; |
83096483 LP |
2922 | } |
2923 | ||
bef77f37 LP |
2924 | for (;;) { |
2925 | _cleanup_free_ char *line = NULL; | |
8965d9f8 | 2926 | PresetRule rule = {}; |
0ec0deaa LP |
2927 | const char *parameter; |
2928 | char *l; | |
83096483 | 2929 | |
bef77f37 LP |
2930 | r = read_line(f, LONG_LINE_MAX, &line); |
2931 | if (r < 0) | |
2932 | return r; | |
2933 | if (r == 0) | |
2934 | break; | |
2935 | ||
83096483 | 2936 | l = strstrip(line); |
d544d1a4 | 2937 | n++; |
83096483 | 2938 | |
0ec0deaa LP |
2939 | if (isempty(l)) |
2940 | continue; | |
2941 | if (strchr(COMMENTS, *l)) | |
83096483 LP |
2942 | continue; |
2943 | ||
0ec0deaa LP |
2944 | parameter = first_word(l, "enable"); |
2945 | if (parameter) { | |
4c9565ee RB |
2946 | char *unit_name; |
2947 | char **instances = NULL; | |
d9e5e694 | 2948 | |
4c9565ee RB |
2949 | /* Unit_name will remain the same as parameter when no instances are specified */ |
2950 | r = split_pattern_into_name_and_instances(parameter, &unit_name, &instances); | |
2951 | if (r < 0) { | |
8ac3c9ab | 2952 | log_syntax(NULL, LOG_WARNING, *p, n, r, "Couldn't parse line '%s'. Ignoring.", line); |
4c9565ee RB |
2953 | continue; |
2954 | } | |
8965d9f8 AC |
2955 | |
2956 | rule = (PresetRule) { | |
4c9565ee | 2957 | .pattern = unit_name, |
8965d9f8 | 2958 | .action = PRESET_ENABLE, |
4c9565ee | 2959 | .instances = instances, |
8965d9f8 | 2960 | }; |
0ec0deaa | 2961 | } |
83096483 | 2962 | |
0ec0deaa LP |
2963 | parameter = first_word(l, "disable"); |
2964 | if (parameter) { | |
8965d9f8 | 2965 | char *pattern; |
d9e5e694 | 2966 | |
8965d9f8 AC |
2967 | pattern = strdup(parameter); |
2968 | if (!pattern) | |
2969 | return -ENOMEM; | |
2970 | ||
2971 | rule = (PresetRule) { | |
2972 | .pattern = pattern, | |
2973 | .action = PRESET_DISABLE, | |
2974 | }; | |
2975 | } | |
2976 | ||
2977 | if (rule.action) { | |
2978 | if (!GREEDY_REALLOC(ps.rules, n_allocated, ps.n_rules + 1)) | |
2979 | return -ENOMEM; | |
2980 | ||
2981 | ps.rules[ps.n_rules++] = rule; | |
0ec0deaa LP |
2982 | continue; |
2983 | } | |
2984 | ||
d544d1a4 | 2985 | log_syntax(NULL, LOG_WARNING, *p, n, 0, "Couldn't parse line '%s'. Ignoring.", line); |
83096483 | 2986 | } |
83096483 LP |
2987 | } |
2988 | ||
8965d9f8 AC |
2989 | *presets = ps; |
2990 | ps = (Presets){}; | |
2991 | ||
2992 | return 0; | |
2993 | } | |
2994 | ||
4c9565ee RB |
2995 | static int pattern_match_multiple_instances( |
2996 | const PresetRule rule, | |
2997 | const char *unit_name, | |
2998 | char ***ret) { | |
2999 | ||
3000 | _cleanup_free_ char *templated_name = NULL; | |
3001 | int r; | |
3002 | ||
3003 | /* If no ret is needed or the rule itself does not have instances | |
5238e957 | 3004 | * initialized, we return not matching */ |
4c9565ee RB |
3005 | if (!ret || !rule.instances) |
3006 | return 0; | |
3007 | ||
3008 | r = unit_name_template(unit_name, &templated_name); | |
3009 | if (r < 0) | |
3010 | return r; | |
3011 | if (!streq(rule.pattern, templated_name)) | |
3012 | return 0; | |
3013 | ||
3014 | /* Compose a list of specified instances when unit name is a template */ | |
3015 | if (unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) { | |
3016 | _cleanup_free_ char *prefix = NULL; | |
3017 | _cleanup_strv_free_ char **out_strv = NULL; | |
3018 | char **iter; | |
3019 | ||
3020 | r = unit_name_to_prefix(unit_name, &prefix); | |
3021 | if (r < 0) | |
3022 | return r; | |
3023 | ||
3024 | STRV_FOREACH(iter, rule.instances) { | |
3025 | _cleanup_free_ char *name = NULL; | |
3026 | r = unit_name_build(prefix, *iter, ".service", &name); | |
3027 | if (r < 0) | |
3028 | return r; | |
3029 | r = strv_extend(&out_strv, name); | |
3030 | if (r < 0) | |
3031 | return r; | |
3032 | } | |
3033 | ||
3034 | *ret = TAKE_PTR(out_strv); | |
3035 | return 1; | |
3036 | } else { | |
3037 | /* We now know the input unit name is an instance name */ | |
3038 | _cleanup_free_ char *instance_name = NULL; | |
3039 | ||
3040 | r = unit_name_to_instance(unit_name, &instance_name); | |
3041 | if (r < 0) | |
3042 | return r; | |
3043 | ||
3044 | if (strv_find(rule.instances, instance_name)) | |
3045 | return 1; | |
3046 | } | |
3047 | return 0; | |
3048 | } | |
3049 | ||
3050 | static int query_presets(const char *name, const Presets presets, char ***instance_name_list) { | |
8965d9f8 AC |
3051 | PresetAction action = PRESET_UNKNOWN; |
3052 | size_t i; | |
4c9565ee | 3053 | char **s; |
8965d9f8 AC |
3054 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
3055 | return -EINVAL; | |
3056 | ||
3057 | for (i = 0; i < presets.n_rules; i++) | |
4c9565ee RB |
3058 | if (pattern_match_multiple_instances(presets.rules[i], name, instance_name_list) > 0 || |
3059 | fnmatch(presets.rules[i].pattern, name, FNM_NOESCAPE) == 0) { | |
8965d9f8 AC |
3060 | action = presets.rules[i].action; |
3061 | break; | |
3062 | } | |
3063 | ||
3064 | switch (action) { | |
3065 | case PRESET_UNKNOWN: | |
3066 | log_debug("Preset files don't specify rule for %s. Enabling.", name); | |
3067 | return 1; | |
3068 | case PRESET_ENABLE: | |
4c9565ee RB |
3069 | if (instance_name_list && *instance_name_list) |
3070 | STRV_FOREACH(s, *instance_name_list) | |
3071 | log_debug("Preset files say enable %s.", *s); | |
3072 | else | |
3073 | log_debug("Preset files say enable %s.", name); | |
8965d9f8 AC |
3074 | return 1; |
3075 | case PRESET_DISABLE: | |
3076 | log_debug("Preset files say disable %s.", name); | |
3077 | return 0; | |
3078 | default: | |
3079 | assert_not_reached("invalid preset action"); | |
3080 | } | |
3081 | } | |
3082 | ||
3083 | int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char *name) { | |
3084 | _cleanup_(presets_freep) Presets presets = {}; | |
3085 | int r; | |
3086 | ||
3087 | r = read_presets(scope, root_dir, &presets); | |
3088 | if (r < 0) | |
3089 | return r; | |
3090 | ||
4c9565ee | 3091 | return query_presets(name, presets, NULL); |
83096483 LP |
3092 | } |
3093 | ||
0ec0deaa LP |
3094 | static int execute_preset( |
3095 | UnitFileScope scope, | |
3096 | InstallContext *plus, | |
3097 | InstallContext *minus, | |
3098 | const LookupPaths *paths, | |
1830ac51 | 3099 | const char *config_path, |
0ec0deaa LP |
3100 | char **files, |
3101 | UnitFilePresetMode mode, | |
1830ac51 | 3102 | bool force, |
0ec0deaa | 3103 | UnitFileChange **changes, |
da6053d0 | 3104 | size_t *n_changes) { |
0ec0deaa | 3105 | |
1830ac51 | 3106 | int r; |
0ec0deaa LP |
3107 | |
3108 | assert(plus); | |
3109 | assert(minus); | |
3110 | assert(paths); | |
1830ac51 | 3111 | assert(config_path); |
0ec0deaa LP |
3112 | |
3113 | if (mode != UNIT_FILE_PRESET_ENABLE_ONLY) { | |
3114 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
3115 | ||
1830ac51 MB |
3116 | r = install_context_mark_for_removal(scope, minus, paths, &remove_symlinks_to, config_path, changes, n_changes); |
3117 | if (r < 0) | |
3118 | return r; | |
0ec0deaa | 3119 | |
1830ac51 MB |
3120 | r = remove_marked_symlinks(remove_symlinks_to, config_path, paths, false, changes, n_changes); |
3121 | } else | |
3122 | r = 0; | |
0ec0deaa LP |
3123 | |
3124 | if (mode != UNIT_FILE_PRESET_DISABLE_ONLY) { | |
1830ac51 MB |
3125 | int q; |
3126 | ||
0ec0deaa | 3127 | /* Returns number of symlinks that where supposed to be installed. */ |
1830ac51 MB |
3128 | q = install_context_apply(scope, plus, paths, config_path, force, SEARCH_LOAD, changes, n_changes); |
3129 | if (r >= 0) { | |
3130 | if (q < 0) | |
3131 | r = q; | |
3132 | else | |
3133 | r += q; | |
3134 | } | |
0ec0deaa LP |
3135 | } |
3136 | ||
3137 | return r; | |
3138 | } | |
3139 | ||
3140 | static int preset_prepare_one( | |
3141 | UnitFileScope scope, | |
3142 | InstallContext *plus, | |
3143 | InstallContext *minus, | |
3144 | LookupPaths *paths, | |
af3d8113 | 3145 | const char *name, |
8965d9f8 | 3146 | Presets presets, |
af3d8113 | 3147 | UnitFileChange **changes, |
da6053d0 | 3148 | size_t *n_changes) { |
0ec0deaa | 3149 | |
11e11fd5 | 3150 | _cleanup_(install_context_done) InstallContext tmp = {}; |
4c9565ee | 3151 | _cleanup_strv_free_ char **instance_name_list = NULL; |
0ec0deaa LP |
3152 | UnitFileInstallInfo *i; |
3153 | int r; | |
3154 | ||
11e11fd5 | 3155 | if (install_info_find(plus, name) || install_info_find(minus, name)) |
0ec0deaa LP |
3156 | return 0; |
3157 | ||
59108fbe ZJS |
3158 | r = install_info_discover(scope, &tmp, paths, name, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3159 | &i, changes, n_changes); | |
11e11fd5 ZJS |
3160 | if (r < 0) |
3161 | return r; | |
3162 | if (!streq(name, i->name)) { | |
10d67460 | 3163 | log_debug("Skipping %s because it is an alias for %s.", name, i->name); |
11e11fd5 ZJS |
3164 | return 0; |
3165 | } | |
3166 | ||
4c9565ee | 3167 | r = query_presets(name, presets, &instance_name_list); |
0ec0deaa LP |
3168 | if (r < 0) |
3169 | return r; | |
3170 | ||
3171 | if (r > 0) { | |
4c9565ee RB |
3172 | if (instance_name_list) { |
3173 | char **s; | |
3174 | STRV_FOREACH(s, instance_name_list) { | |
1e475a0a RB |
3175 | r = install_info_discover_and_check(scope, plus, paths, *s, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3176 | &i, changes, n_changes); | |
4c9565ee RB |
3177 | if (r < 0) |
3178 | return r; | |
3179 | } | |
3180 | } else { | |
1e475a0a RB |
3181 | r = install_info_discover_and_check(scope, plus, paths, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3182 | &i, changes, n_changes); | |
4c9565ee RB |
3183 | if (r < 0) |
3184 | return r; | |
3185 | } | |
0ec0deaa | 3186 | |
0ec0deaa | 3187 | } else |
59108fbe ZJS |
3188 | r = install_info_discover(scope, minus, paths, name, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3189 | &i, changes, n_changes); | |
0ec0deaa LP |
3190 | |
3191 | return r; | |
3192 | } | |
3193 | ||
83096483 LP |
3194 | int unit_file_preset( |
3195 | UnitFileScope scope, | |
b3796dd8 | 3196 | UnitFileFlags flags, |
83096483 | 3197 | const char *root_dir, |
7195aa42 | 3198 | char **files, |
d309c1c3 | 3199 | UnitFilePresetMode mode, |
83096483 | 3200 | UnitFileChange **changes, |
da6053d0 | 3201 | size_t *n_changes) { |
83096483 | 3202 | |
59ccf93d | 3203 | _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; |
8e766630 | 3204 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
8965d9f8 | 3205 | _cleanup_(presets_freep) Presets presets = {}; |
1830ac51 | 3206 | const char *config_path; |
da39f6a6 | 3207 | char **i; |
0ec0deaa | 3208 | int r; |
83096483 LP |
3209 | |
3210 | assert(scope >= 0); | |
3211 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
86bbe5bf | 3212 | assert(mode < _UNIT_FILE_PRESET_MAX); |
83096483 | 3213 | |
4943d143 | 3214 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
83096483 LP |
3215 | if (r < 0) |
3216 | return r; | |
3217 | ||
1830ac51 MB |
3218 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
3219 | if (!config_path) | |
3220 | return -ENXIO; | |
3221 | ||
8965d9f8 AC |
3222 | r = read_presets(scope, root_dir, &presets); |
3223 | if (r < 0) | |
3224 | return r; | |
83096483 | 3225 | |
8965d9f8 | 3226 | STRV_FOREACH(i, files) { |
ff56349d | 3227 | r = preset_prepare_one(scope, &plus, &minus, &paths, *i, presets, changes, n_changes); |
83096483 | 3228 | if (r < 0) |
d9e5e694 | 3229 | return r; |
83096483 LP |
3230 | } |
3231 | ||
1830ac51 | 3232 | return execute_preset(scope, &plus, &minus, &paths, config_path, files, mode, !!(flags & UNIT_FILE_FORCE), changes, n_changes); |
d309c1c3 LP |
3233 | } |
3234 | ||
3235 | int unit_file_preset_all( | |
3236 | UnitFileScope scope, | |
b3796dd8 | 3237 | UnitFileFlags flags, |
d309c1c3 LP |
3238 | const char *root_dir, |
3239 | UnitFilePresetMode mode, | |
d309c1c3 | 3240 | UnitFileChange **changes, |
da6053d0 | 3241 | size_t *n_changes) { |
d309c1c3 | 3242 | |
59ccf93d | 3243 | _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; |
8e766630 | 3244 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
8965d9f8 | 3245 | _cleanup_(presets_freep) Presets presets = {}; |
1830ac51 | 3246 | const char *config_path = NULL; |
d309c1c3 | 3247 | char **i; |
0ec0deaa | 3248 | int r; |
d309c1c3 LP |
3249 | |
3250 | assert(scope >= 0); | |
3251 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
86bbe5bf | 3252 | assert(mode < _UNIT_FILE_PRESET_MAX); |
d309c1c3 | 3253 | |
4943d143 | 3254 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
d309c1c3 LP |
3255 | if (r < 0) |
3256 | return r; | |
3257 | ||
1830ac51 MB |
3258 | config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config; |
3259 | if (!config_path) | |
3260 | return -ENXIO; | |
3261 | ||
8965d9f8 AC |
3262 | r = read_presets(scope, root_dir, &presets); |
3263 | if (r < 0) | |
3264 | return r; | |
3265 | ||
a3c4eb07 | 3266 | STRV_FOREACH(i, paths.search_path) { |
d309c1c3 | 3267 | _cleanup_closedir_ DIR *d = NULL; |
d25e100b | 3268 | struct dirent *de; |
d309c1c3 | 3269 | |
401017e0 | 3270 | d = opendir(*i); |
d309c1c3 LP |
3271 | if (!d) { |
3272 | if (errno == ENOENT) | |
3273 | continue; | |
3274 | ||
3275 | return -errno; | |
3276 | } | |
3277 | ||
d25e100b | 3278 | FOREACH_DIRENT(de, d, return -errno) { |
1830ac51 | 3279 | |
7410616c | 3280 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
d309c1c3 LP |
3281 | continue; |
3282 | ||
3283 | dirent_ensure_type(d, de); | |
3284 | ||
0ec0deaa | 3285 | if (!IN_SET(de->d_type, DT_LNK, DT_REG)) |
d309c1c3 LP |
3286 | continue; |
3287 | ||
af3d8113 | 3288 | /* we don't pass changes[] in, because we want to handle errors on our own */ |
ff56349d | 3289 | r = preset_prepare_one(scope, &plus, &minus, &paths, de->d_name, presets, NULL, 0); |
9a0a413a ZJS |
3290 | if (r == -ERFKILL) |
3291 | r = unit_file_changes_add(changes, n_changes, | |
3292 | UNIT_FILE_IS_MASKED, de->d_name, NULL); | |
893275df ZJS |
3293 | else if (r == -ENOLINK) |
3294 | r = unit_file_changes_add(changes, n_changes, | |
3295 | UNIT_FILE_IS_DANGLING, de->d_name, NULL); | |
26421228 LP |
3296 | else if (r == -EADDRNOTAVAIL) /* Ignore generated/transient units when applying preset */ |
3297 | continue; | |
d309c1c3 LP |
3298 | if (r < 0) |
3299 | return r; | |
3300 | } | |
3301 | } | |
3302 | ||
1830ac51 | 3303 | return execute_preset(scope, &plus, &minus, &paths, config_path, NULL, mode, !!(flags & UNIT_FILE_FORCE), changes, n_changes); |
83096483 LP |
3304 | } |
3305 | ||
59ccf93d LP |
3306 | static void unit_file_list_free_one(UnitFileList *f) { |
3307 | if (!f) | |
d9e5e694 ZJS |
3308 | return; |
3309 | ||
59ccf93d LP |
3310 | free(f->path); |
3311 | free(f); | |
d9e5e694 | 3312 | } |
59ccf93d | 3313 | |
0ec0deaa | 3314 | Hashmap* unit_file_list_free(Hashmap *h) { |
224b0e7a | 3315 | return hashmap_free_with_destructor(h, unit_file_list_free_one); |
0ec0deaa LP |
3316 | } |
3317 | ||
59ccf93d | 3318 | DEFINE_TRIVIAL_CLEANUP_FUNC(UnitFileList*, unit_file_list_free_one); |
d9e5e694 | 3319 | |
83096483 LP |
3320 | int unit_file_get_list( |
3321 | UnitFileScope scope, | |
3322 | const char *root_dir, | |
313fe66f | 3323 | Hashmap *h, |
3324 | char **states, | |
3325 | char **patterns) { | |
83096483 | 3326 | |
8e766630 | 3327 | _cleanup_(lookup_paths_free) LookupPaths paths = {}; |
d9e5e694 | 3328 | char **i; |
83096483 LP |
3329 | int r; |
3330 | ||
3331 | assert(scope >= 0); | |
3332 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
3333 | assert(h); | |
3334 | ||
4943d143 | 3335 | r = lookup_paths_init(&paths, scope, 0, root_dir); |
83096483 LP |
3336 | if (r < 0) |
3337 | return r; | |
3338 | ||
a3c4eb07 | 3339 | STRV_FOREACH(i, paths.search_path) { |
da39f6a6 | 3340 | _cleanup_closedir_ DIR *d = NULL; |
d25e100b | 3341 | struct dirent *de; |
83096483 | 3342 | |
401017e0 | 3343 | d = opendir(*i); |
83096483 LP |
3344 | if (!d) { |
3345 | if (errno == ENOENT) | |
3346 | continue; | |
a1feacf7 | 3347 | if (IN_SET(errno, ENOTDIR, EACCES)) { |
25f027c5 | 3348 | log_debug_errno(errno, "Failed to open \"%s\": %m", *i); |
a1feacf7 ZJS |
3349 | continue; |
3350 | } | |
83096483 | 3351 | |
d9e5e694 | 3352 | return -errno; |
83096483 LP |
3353 | } |
3354 | ||
d25e100b | 3355 | FOREACH_DIRENT(de, d, return -errno) { |
59ccf93d | 3356 | _cleanup_(unit_file_list_free_onep) UnitFileList *f = NULL; |
83096483 | 3357 | |
7410616c | 3358 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
83096483 LP |
3359 | continue; |
3360 | ||
313fe66f | 3361 | if (!strv_fnmatch_or_empty(patterns, de->d_name, FNM_NOESCAPE)) |
3362 | continue; | |
3363 | ||
83096483 LP |
3364 | if (hashmap_get(h, de->d_name)) |
3365 | continue; | |
3366 | ||
da39f6a6 | 3367 | dirent_ensure_type(d, de); |
83096483 | 3368 | |
da39f6a6 | 3369 | if (!IN_SET(de->d_type, DT_LNK, DT_REG)) |
83096483 LP |
3370 | continue; |
3371 | ||
3372 | f = new0(UnitFileList, 1); | |
d9e5e694 ZJS |
3373 | if (!f) |
3374 | return -ENOMEM; | |
83096483 | 3375 | |
401017e0 | 3376 | f->path = path_make_absolute(de->d_name, *i); |
d9e5e694 ZJS |
3377 | if (!f->path) |
3378 | return -ENOMEM; | |
83096483 | 3379 | |
401017e0 | 3380 | r = unit_file_lookup_state(scope, &paths, de->d_name, &f->state); |
d9e5e694 | 3381 | if (r < 0) |
0ec0deaa | 3382 | f->state = UNIT_FILE_BAD; |
81fc054d | 3383 | |
313fe66f | 3384 | if (!strv_isempty(states) && |
3385 | !strv_contains(states, unit_file_state_to_string(f->state))) | |
3386 | continue; | |
3387 | ||
2b6bf07d | 3388 | r = hashmap_put(h, basename(f->path), f); |
d9e5e694 ZJS |
3389 | if (r < 0) |
3390 | return r; | |
0ec0deaa | 3391 | |
d9e5e694 | 3392 | f = NULL; /* prevent cleanup */ |
83096483 LP |
3393 | } |
3394 | } | |
3395 | ||
77cd2c87 | 3396 | return 0; |
83096483 LP |
3397 | } |
3398 | ||
3399 | static const char* const unit_file_state_table[_UNIT_FILE_STATE_MAX] = { | |
3400 | [UNIT_FILE_ENABLED] = "enabled", | |
771faa9a | 3401 | [UNIT_FILE_ENABLED_RUNTIME] = "enabled-runtime", |
83096483 LP |
3402 | [UNIT_FILE_LINKED] = "linked", |
3403 | [UNIT_FILE_LINKED_RUNTIME] = "linked-runtime", | |
3404 | [UNIT_FILE_MASKED] = "masked", | |
3405 | [UNIT_FILE_MASKED_RUNTIME] = "masked-runtime", | |
3406 | [UNIT_FILE_STATIC] = "static", | |
b5b46d59 | 3407 | [UNIT_FILE_DISABLED] = "disabled", |
aedd4012 | 3408 | [UNIT_FILE_INDIRECT] = "indirect", |
f4139308 | 3409 | [UNIT_FILE_GENERATED] = "generated", |
e4fca67f | 3410 | [UNIT_FILE_TRANSIENT] = "transient", |
0ec0deaa | 3411 | [UNIT_FILE_BAD] = "bad", |
83096483 LP |
3412 | }; |
3413 | ||
3414 | DEFINE_STRING_TABLE_LOOKUP(unit_file_state, UnitFileState); | |
c0576cd6 LP |
3415 | |
3416 | static const char* const unit_file_change_type_table[_UNIT_FILE_CHANGE_TYPE_MAX] = { | |
3417 | [UNIT_FILE_SYMLINK] = "symlink", | |
3418 | [UNIT_FILE_UNLINK] = "unlink", | |
9a0a413a | 3419 | [UNIT_FILE_IS_MASKED] = "masked", |
893275df | 3420 | [UNIT_FILE_IS_DANGLING] = "dangling", |
c0576cd6 LP |
3421 | }; |
3422 | ||
3423 | DEFINE_STRING_TABLE_LOOKUP(unit_file_change_type, UnitFileChangeType); | |
d309c1c3 | 3424 | |
86bbe5bf | 3425 | static const char* const unit_file_preset_mode_table[_UNIT_FILE_PRESET_MAX] = { |
d309c1c3 LP |
3426 | [UNIT_FILE_PRESET_FULL] = "full", |
3427 | [UNIT_FILE_PRESET_ENABLE_ONLY] = "enable-only", | |
3428 | [UNIT_FILE_PRESET_DISABLE_ONLY] = "disable-only", | |
3429 | }; | |
3430 | ||
3431 | DEFINE_STRING_TABLE_LOOKUP(unit_file_preset_mode, UnitFilePresetMode); |