]>
Commit | Line | Data |
---|---|---|
db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
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" |
f4351959 | 13 | #include "chase-symlinks.h" |
07630cea LP |
14 | #include "conf-files.h" |
15 | #include "conf-parser.h" | |
f7767d76 | 16 | #include "def.h" |
a0956174 | 17 | #include "dirent-util.h" |
93419a96 | 18 | #include "errno-list.h" |
a8fbdf54 | 19 | #include "extract-word.h" |
a0956174 | 20 | #include "fd-util.h" |
0ec0deaa | 21 | #include "fileio.h" |
f4f15635 | 22 | #include "fs-util.h" |
83096483 | 23 | #include "hashmap.h" |
07630cea | 24 | #include "install-printf.h" |
a0956174 | 25 | #include "install.h" |
a760db24 | 26 | #include "locale-util.h" |
a8fbdf54 TA |
27 | #include "log.h" |
28 | #include "macro.h" | |
35cd0ba5 | 29 | #include "mkdir-label.h" |
83096483 | 30 | #include "path-lookup.h" |
07630cea | 31 | #include "path-util.h" |
344ca755 | 32 | #include "rm-rf.h" |
07630cea LP |
33 | #include "set.h" |
34 | #include "special.h" | |
8fcde012 | 35 | #include "stat-util.h" |
8b43440b | 36 | #include "string-table.h" |
07630cea | 37 | #include "string-util.h" |
83096483 | 38 | #include "strv.h" |
5cfa33e0 | 39 | #include "unit-file.h" |
83096483 | 40 | |
0ec0deaa LP |
41 | #define UNIT_FILE_FOLLOW_SYMLINK_MAX 64 |
42 | ||
43 | typedef enum SearchFlags { | |
ef31828d LP |
44 | SEARCH_LOAD = 1 << 0, |
45 | SEARCH_FOLLOW_CONFIG_SYMLINKS = 1 << 1, | |
46 | SEARCH_DROPIN = 1 << 2, | |
0ec0deaa LP |
47 | } SearchFlags; |
48 | ||
83096483 | 49 | typedef struct { |
b380b643 | 50 | LookupScope scope; |
0ec0deaa LP |
51 | OrderedHashmap *will_process; |
52 | OrderedHashmap *have_processed; | |
83096483 LP |
53 | } InstallContext; |
54 | ||
8965d9f8 AC |
55 | typedef enum { |
56 | PRESET_UNKNOWN, | |
57 | PRESET_ENABLE, | |
58 | PRESET_DISABLE, | |
59 | } PresetAction; | |
60 | ||
8f7b2566 | 61 | struct UnitFilePresetRule { |
8965d9f8 AC |
62 | char *pattern; |
63 | PresetAction action; | |
4c9565ee | 64 | char **instances; |
8f7b2566 | 65 | }; |
8965d9f8 | 66 | |
a1e92eee | 67 | static bool unit_file_install_info_has_rules(const UnitFileInstallInfo *i) { |
7a7ec2bf ZJS |
68 | assert(i); |
69 | ||
70 | return !strv_isempty(i->aliases) || | |
71 | !strv_isempty(i->wanted_by) || | |
72 | !strv_isempty(i->required_by); | |
73 | } | |
74 | ||
a1e92eee | 75 | static bool unit_file_install_info_has_also(const UnitFileInstallInfo *i) { |
7a7ec2bf ZJS |
76 | assert(i); |
77 | ||
78 | return !strv_isempty(i->also); | |
79 | } | |
80 | ||
8f7b2566 | 81 | void unit_file_presets_freep(UnitFilePresets *p) { |
8965d9f8 AC |
82 | if (!p) |
83 | return; | |
84 | ||
de8be28e | 85 | for (size_t i = 0; i < p->n_rules; i++) { |
8965d9f8 | 86 | free(p->rules[i].pattern); |
4c9565ee RB |
87 | strv_free(p->rules[i].instances); |
88 | } | |
8965d9f8 AC |
89 | |
90 | free(p->rules); | |
91 | p->n_rules = 0; | |
92 | } | |
93 | ||
b82f71c7 | 94 | static const char *const unit_file_type_table[_UNIT_FILE_TYPE_MAX] = { |
64f9280e | 95 | [UNIT_FILE_TYPE_REGULAR] = "regular", |
48ed75ad ZJS |
96 | [UNIT_FILE_TYPE_LINKED] = "linked", |
97 | [UNIT_FILE_TYPE_ALIAS] = "alias", | |
98 | [UNIT_FILE_TYPE_MASKED] = "masked", | |
64f9280e ZJS |
99 | }; |
100 | ||
101 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(unit_file_type, UnitFileType); | |
102 | ||
c3e7fba0 | 103 | static int in_search_path(const LookupPaths *lp, const char *path) { |
8f294b45 | 104 | _cleanup_free_ char *parent = NULL; |
45519d13 | 105 | int r; |
8f294b45 LP |
106 | |
107 | assert(path); | |
108 | ||
45519d13 LP |
109 | r = path_extract_directory(path, &parent); |
110 | if (r < 0) | |
111 | return r; | |
8f294b45 | 112 | |
c3e7fba0 | 113 | return path_strv_contains(lp->search_path, parent); |
8f294b45 LP |
114 | } |
115 | ||
c3e7fba0 | 116 | static const char* skip_root(const char *root_dir, const char *path) { |
8f9364f9 | 117 | assert(path); |
401017e0 | 118 | |
c3e7fba0 | 119 | if (!root_dir) |
8f9364f9 | 120 | return path; |
401017e0 | 121 | |
c3e7fba0 | 122 | const char *e = path_startswith(path, root_dir); |
8f9364f9 LP |
123 | if (!e) |
124 | return NULL; | |
125 | ||
126 | /* Make sure the returned path starts with a slash */ | |
127 | if (e[0] != '/') { | |
128 | if (e == path || e[-1] != '/') | |
129 | return NULL; | |
401017e0 | 130 | |
8f9364f9 | 131 | e--; |
401017e0 LP |
132 | } |
133 | ||
8f9364f9 | 134 | return e; |
401017e0 LP |
135 | } |
136 | ||
c3e7fba0 | 137 | static int path_is_generator(const LookupPaths *lp, const char *path) { |
f4139308 | 138 | _cleanup_free_ char *parent = NULL; |
45519d13 | 139 | int r; |
f4139308 | 140 | |
c3e7fba0 | 141 | assert(lp); |
f4139308 LP |
142 | assert(path); |
143 | ||
45519d13 LP |
144 | r = path_extract_directory(path, &parent); |
145 | if (r < 0) | |
146 | return r; | |
f4139308 | 147 | |
c3e7fba0 ZJS |
148 | return path_equal_ptr(parent, lp->generator) || |
149 | path_equal_ptr(parent, lp->generator_early) || | |
150 | path_equal_ptr(parent, lp->generator_late); | |
f4139308 LP |
151 | } |
152 | ||
c3e7fba0 | 153 | static int path_is_transient(const LookupPaths *lp, const char *path) { |
e4fca67f | 154 | _cleanup_free_ char *parent = NULL; |
45519d13 | 155 | int r; |
e4fca67f | 156 | |
c3e7fba0 | 157 | assert(lp); |
e4fca67f LP |
158 | assert(path); |
159 | ||
45519d13 LP |
160 | r = path_extract_directory(path, &parent); |
161 | if (r < 0) | |
162 | return r; | |
e4fca67f | 163 | |
c3e7fba0 | 164 | return path_equal_ptr(parent, lp->transient); |
e4fca67f LP |
165 | } |
166 | ||
c3e7fba0 | 167 | static int path_is_control(const LookupPaths *lp, const char *path) { |
e1c5c2b0 | 168 | _cleanup_free_ char *parent = NULL; |
45519d13 | 169 | int r; |
0ec0deaa | 170 | |
c3e7fba0 | 171 | assert(lp); |
0ec0deaa LP |
172 | assert(path); |
173 | ||
45519d13 LP |
174 | r = path_extract_directory(path, &parent); |
175 | if (r < 0) | |
176 | return r; | |
0ec0deaa | 177 | |
c3e7fba0 ZJS |
178 | return path_equal_ptr(parent, lp->persistent_control) || |
179 | path_equal_ptr(parent, lp->runtime_control); | |
344ca755 LP |
180 | } |
181 | ||
c3e7fba0 | 182 | static int path_is_config(const LookupPaths *lp, const char *path, bool check_parent) { |
344ca755 | 183 | _cleanup_free_ char *parent = NULL; |
45519d13 | 184 | int r; |
344ca755 | 185 | |
c3e7fba0 | 186 | assert(lp); |
344ca755 LP |
187 | assert(path); |
188 | ||
d7604756 ZJS |
189 | /* Note that we do *not* have generic checks for /etc or /run in place, since with |
190 | * them we couldn't discern configuration from transient or generated units */ | |
0ec0deaa | 191 | |
dfead90d | 192 | if (check_parent) { |
45519d13 LP |
193 | r = path_extract_directory(path, &parent); |
194 | if (r < 0) | |
195 | return r; | |
dfead90d LP |
196 | |
197 | path = parent; | |
198 | } | |
0ec0deaa | 199 | |
c3e7fba0 ZJS |
200 | return path_equal_ptr(path, lp->persistent_config) || |
201 | path_equal_ptr(path, lp->runtime_config); | |
0ec0deaa LP |
202 | } |
203 | ||
c3e7fba0 | 204 | static int path_is_runtime(const LookupPaths *lp, const char *path, bool check_parent) { |
385eb996 | 205 | _cleanup_free_ char *parent = NULL; |
401017e0 | 206 | const char *rpath; |
45519d13 | 207 | int r; |
385eb996 | 208 | |
c3e7fba0 | 209 | assert(lp); |
385eb996 LP |
210 | assert(path); |
211 | ||
d7604756 ZJS |
212 | /* Everything in /run is considered runtime. On top of that we also add |
213 | * explicit checks for the various runtime directories, as safety net. */ | |
344ca755 | 214 | |
c3e7fba0 | 215 | rpath = skip_root(lp->root_dir, path); |
401017e0 | 216 | if (rpath && path_startswith(rpath, "/run")) |
385eb996 LP |
217 | return true; |
218 | ||
dfead90d | 219 | if (check_parent) { |
45519d13 LP |
220 | r = path_extract_directory(path, &parent); |
221 | if (r < 0) | |
222 | return r; | |
385eb996 | 223 | |
dfead90d LP |
224 | path = parent; |
225 | } | |
226 | ||
c3e7fba0 ZJS |
227 | return path_equal_ptr(path, lp->runtime_config) || |
228 | path_equal_ptr(path, lp->generator) || | |
229 | path_equal_ptr(path, lp->generator_early) || | |
230 | path_equal_ptr(path, lp->generator_late) || | |
231 | path_equal_ptr(path, lp->transient) || | |
232 | path_equal_ptr(path, lp->runtime_control); | |
344ca755 LP |
233 | } |
234 | ||
c3e7fba0 | 235 | static int path_is_vendor_or_generator(const LookupPaths *lp, const char *path) { |
344ca755 LP |
236 | const char *rpath; |
237 | ||
c3e7fba0 | 238 | assert(lp); |
344ca755 LP |
239 | assert(path); |
240 | ||
c3e7fba0 | 241 | rpath = skip_root(lp->root_dir, path); |
344ca755 LP |
242 | if (!rpath) |
243 | return 0; | |
244 | ||
245 | if (path_startswith(rpath, "/usr")) | |
246 | return true; | |
247 | ||
349cc4a5 | 248 | #if HAVE_SPLIT_USR |
344ca755 LP |
249 | if (path_startswith(rpath, "/lib")) |
250 | return true; | |
251 | #endif | |
252 | ||
c3e7fba0 | 253 | if (path_is_generator(lp, rpath)) |
efdbf5fe JC |
254 | return true; |
255 | ||
835cf75a | 256 | return path_equal(rpath, SYSTEM_DATA_UNIT_DIR); |
385eb996 LP |
257 | } |
258 | ||
c3e7fba0 ZJS |
259 | static const char* config_path_from_flags(const LookupPaths *lp, UnitFileFlags flags) { |
260 | assert(lp); | |
83654007 LB |
261 | |
262 | if (FLAGS_SET(flags, UNIT_FILE_PORTABLE)) | |
c3e7fba0 | 263 | return FLAGS_SET(flags, UNIT_FILE_RUNTIME) ? lp->runtime_attached : lp->persistent_attached; |
83654007 | 264 | else |
c3e7fba0 | 265 | return FLAGS_SET(flags, UNIT_FILE_RUNTIME) ? lp->runtime_config : lp->persistent_config; |
83654007 LB |
266 | } |
267 | ||
0ec0deaa LP |
268 | int unit_file_changes_add( |
269 | UnitFileChange **changes, | |
da6053d0 | 270 | size_t *n_changes, |
93419a96 | 271 | int type_or_errno, /* UNIT_FILE_SYMLINK, _UNLINK, _IS_MASKED, _IS_DANGLING if positive or errno if negative */ |
0ec0deaa LP |
272 | const char *path, |
273 | const char *source) { | |
274 | ||
12bf0ae4 | 275 | _cleanup_free_ char *p = NULL, *s = NULL; |
0ec0deaa | 276 | UnitFileChange *c; |
0ec0deaa | 277 | |
0ec0deaa LP |
278 | assert(!changes == !n_changes); |
279 | ||
93419a96 LP |
280 | if (type_or_errno >= 0) |
281 | assert(type_or_errno < _UNIT_FILE_CHANGE_TYPE_MAX); | |
282 | else | |
283 | assert(type_or_errno >= -ERRNO_MAX); | |
284 | ||
0ec0deaa LP |
285 | if (!changes) |
286 | return 0; | |
287 | ||
62d74c78 | 288 | c = reallocarray(*changes, *n_changes + 1, sizeof(UnitFileChange)); |
0ec0deaa LP |
289 | if (!c) |
290 | return -ENOMEM; | |
0ec0deaa | 291 | *changes = c; |
0ec0deaa | 292 | |
3aa96361 ZJS |
293 | if (path) { |
294 | p = strdup(path); | |
295 | if (!p) | |
296 | return -ENOMEM; | |
0ec0deaa | 297 | |
3aa96361 ZJS |
298 | path_simplify(p); |
299 | } | |
93419a96 LP |
300 | |
301 | if (source) { | |
302 | s = strdup(source); | |
303 | if (!s) | |
304 | return -ENOMEM; | |
305 | ||
4ff361cc | 306 | path_simplify(s); |
93419a96 LP |
307 | } |
308 | ||
309 | c[(*n_changes)++] = (UnitFileChange) { | |
310 | .type_or_errno = type_or_errno, | |
311 | .path = TAKE_PTR(p), | |
312 | .source = TAKE_PTR(s), | |
313 | }; | |
0ec0deaa | 314 | |
0ec0deaa LP |
315 | return 0; |
316 | } | |
317 | ||
da6053d0 | 318 | void unit_file_changes_free(UnitFileChange *changes, size_t n_changes) { |
0ec0deaa LP |
319 | assert(changes || n_changes == 0); |
320 | ||
de8be28e | 321 | for (size_t i = 0; i < n_changes; i++) { |
0ec0deaa LP |
322 | free(changes[i].path); |
323 | free(changes[i].source); | |
324 | } | |
325 | ||
326 | free(changes); | |
327 | } | |
328 | ||
da6053d0 | 329 | void unit_file_dump_changes(int r, const char *verb, const UnitFileChange *changes, size_t n_changes, bool quiet) { |
32450f53 | 330 | int err = 0; |
af3d8113 ZJS |
331 | |
332 | assert(changes || n_changes == 0); | |
333 | /* If verb is not specified, errors are not allowed! */ | |
334 | assert(verb || r >= 0); | |
335 | ||
de8be28e | 336 | for (size_t i = 0; i < n_changes; i++) { |
93419a96 | 337 | assert(verb || changes[i].type_or_errno >= 0); |
af3d8113 | 338 | |
79893116 | 339 | switch (changes[i].type_or_errno) { |
af3d8113 ZJS |
340 | case UNIT_FILE_SYMLINK: |
341 | if (!quiet) | |
a760db24 ZJS |
342 | log_info("Created symlink %s %s %s.", |
343 | changes[i].path, | |
fc03e80c | 344 | special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), |
a760db24 | 345 | changes[i].source); |
af3d8113 ZJS |
346 | break; |
347 | case UNIT_FILE_UNLINK: | |
348 | if (!quiet) | |
e75a26d0 | 349 | log_info("Removed \"%s\".", changes[i].path); |
af3d8113 ZJS |
350 | break; |
351 | case UNIT_FILE_IS_MASKED: | |
352 | if (!quiet) | |
353 | log_info("Unit %s is masked, ignoring.", changes[i].path); | |
354 | break; | |
893275df ZJS |
355 | case UNIT_FILE_IS_DANGLING: |
356 | if (!quiet) | |
357 | log_info("Unit %s is an alias to a unit that is not present, ignoring.", | |
358 | changes[i].path); | |
359 | break; | |
8ae27441 JS |
360 | case UNIT_FILE_DESTINATION_NOT_PRESENT: |
361 | if (!quiet) | |
362 | log_warning("Unit %s is added as a dependency to a non-existent unit %s.", | |
363 | changes[i].source, changes[i].path); | |
364 | break; | |
3aa96361 ZJS |
365 | case UNIT_FILE_AUXILIARY_FAILED: |
366 | if (!quiet) | |
367 | log_warning("Failed to enable auxiliary unit %s, ignoring.", changes[i].source); | |
368 | break; | |
af3d8113 ZJS |
369 | case -EEXIST: |
370 | if (changes[i].source) | |
32450f53 ZJS |
371 | err = log_error_errno(changes[i].type_or_errno, |
372 | "Failed to %s unit, file \"%s\" already exists and is a symlink to \"%s\".", | |
373 | verb, changes[i].path, changes[i].source); | |
af3d8113 | 374 | else |
32450f53 ZJS |
375 | err = log_error_errno(changes[i].type_or_errno, |
376 | "Failed to %s unit, file \"%s\" already exists.", | |
377 | verb, changes[i].path); | |
af3d8113 ZJS |
378 | break; |
379 | case -ERFKILL: | |
32450f53 ZJS |
380 | err = log_error_errno(changes[i].type_or_errno, "Failed to %s unit, unit %s is masked.", |
381 | verb, changes[i].path); | |
af3d8113 ZJS |
382 | break; |
383 | case -EADDRNOTAVAIL: | |
32450f53 ZJS |
384 | err = log_error_errno(changes[i].type_or_errno, "Failed to %s unit, unit %s is transient or generated.", |
385 | verb, changes[i].path); | |
af3d8113 | 386 | break; |
19b9d5d0 | 387 | case -EBADSLT: |
32450f53 ZJS |
388 | err = log_error_errno(changes[i].type_or_errno, "Failed to %s unit, invalid specifier in \"%s\".", |
389 | verb, changes[i].path); | |
19b9d5d0 | 390 | break; |
b0ec372a | 391 | case -EIDRM: |
32450f53 ZJS |
392 | err = log_error_errno(changes[i].type_or_errno, "Failed to %s %s, destination unit %s is a non-template unit.", |
393 | verb, changes[i].source, changes[i].path); | |
b0ec372a | 394 | break; |
d7ceaf72 | 395 | case -EUCLEAN: |
32450f53 ZJS |
396 | err = log_error_errno(changes[i].type_or_errno, |
397 | "Failed to %s unit, \"%s\" is not a valid unit name.", | |
398 | verb, changes[i].path); | |
d7ceaf72 | 399 | break; |
af3d8113 | 400 | case -ELOOP: |
32450f53 ZJS |
401 | err = log_error_errno(changes[i].type_or_errno, "Failed to %s unit, refusing to operate on linked unit file %s.", |
402 | verb, changes[i].path); | |
af3d8113 | 403 | break; |
cbfdbffb ZJS |
404 | case -EXDEV: |
405 | if (changes[i].source) | |
406 | err = log_error_errno(changes[i].type_or_errno, "Failed to %s unit, cannot alias %s as %s.", | |
407 | verb, changes[i].source, changes[i].path); | |
408 | else | |
409 | err = log_error_errno(changes[i].type_or_errno, "Failed to %s unit, invalid unit reference \"%s\".", | |
410 | verb, changes[i].path); | |
411 | break; | |
637d6e5b | 412 | case -ENOENT: |
32450f53 ZJS |
413 | err = log_error_errno(changes[i].type_or_errno, "Failed to %s unit, unit %s does not exist.", |
414 | verb, changes[i].path); | |
637d6e5b | 415 | break; |
6ec4c852 | 416 | case -EUNATCH: |
32450f53 ZJS |
417 | err = log_error_errno(changes[i].type_or_errno, "Failed to %s unit, cannot resolve specifiers in \"%s\".", |
418 | verb, changes[i].path); | |
6ec4c852 | 419 | break; |
af3d8113 | 420 | default: |
93419a96 | 421 | assert(changes[i].type_or_errno < 0); |
32450f53 ZJS |
422 | err = log_error_errno(changes[i].type_or_errno, "Failed to %s unit, file \"%s\": %m", |
423 | verb, changes[i].path); | |
af3d8113 ZJS |
424 | } |
425 | } | |
426 | ||
32450f53 | 427 | if (r < 0 && err >= 0) |
af3d8113 ZJS |
428 | log_error_errno(r, "Failed to %s: %m.", verb); |
429 | } | |
430 | ||
25ea9277 | 431 | /** |
3fc53351 ZJS |
432 | * Checks if two symlink targets (starting from src) are equivalent as far as the unit enablement logic is |
433 | * concerned. If the target is in the unit search path, then anything with the same name is equivalent. | |
434 | * If outside the unit search path, paths must be identical. | |
25ea9277 | 435 | */ |
3fc53351 ZJS |
436 | static int chroot_unit_symlinks_equivalent( |
437 | const LookupPaths *lp, | |
438 | const char *src, | |
439 | const char *target_a, | |
440 | const char *target_b) { | |
441 | ||
442 | assert(lp); | |
443 | assert(src); | |
444 | assert(target_a); | |
445 | assert(target_b); | |
25ea9277 ZJS |
446 | |
447 | /* This will give incorrect results if the paths are relative and go outside | |
448 | * of the chroot. False negatives are possible. */ | |
449 | ||
3fc53351 ZJS |
450 | const char *root = lp->root_dir ?: "/"; |
451 | _cleanup_free_ char *dirname = NULL; | |
452 | int r; | |
453 | ||
454 | if (!path_is_absolute(target_a) || !path_is_absolute(target_b)) { | |
455 | r = path_extract_directory(src, &dirname); | |
456 | if (r < 0) | |
457 | return r; | |
458 | } | |
459 | ||
460 | _cleanup_free_ char *a = path_join(path_is_absolute(target_a) ? root : dirname, target_a); | |
461 | _cleanup_free_ char *b = path_join(path_is_absolute(target_b) ? root : dirname, target_b); | |
462 | if (!a || !b) | |
463 | return log_oom(); | |
ae9efab7 | 464 | |
3fc53351 ZJS |
465 | r = path_equal_or_files_same(a, b, 0); |
466 | if (r != 0) | |
467 | return r; | |
468 | ||
469 | _cleanup_free_ char *a_name = NULL, *b_name = NULL; | |
470 | r = path_extract_filename(a, &a_name); | |
471 | if (r < 0) | |
472 | return r; | |
473 | r = path_extract_filename(b, &b_name); | |
474 | if (r < 0) | |
475 | return r; | |
476 | ||
477 | return streq(a_name, b_name) && | |
478 | path_startswith_strv(a, lp->search_path) && | |
479 | path_startswith_strv(b, lp->search_path); | |
25ea9277 ZJS |
480 | } |
481 | ||
0ec0deaa | 482 | static int create_symlink( |
c3e7fba0 | 483 | const LookupPaths *lp, |
0ec0deaa LP |
484 | const char *old_path, |
485 | const char *new_path, | |
486 | bool force, | |
487 | UnitFileChange **changes, | |
da6053d0 | 488 | size_t *n_changes) { |
0ec0deaa | 489 | |
3fc53351 | 490 | _cleanup_free_ char *dest = NULL; |
60bec8e4 | 491 | const char *rp; |
0ec0deaa LP |
492 | int r; |
493 | ||
494 | assert(old_path); | |
495 | assert(new_path); | |
496 | ||
c3e7fba0 | 497 | rp = skip_root(lp->root_dir, old_path); |
60bec8e4 ZJS |
498 | if (rp) |
499 | old_path = rp; | |
500 | ||
4f5c2485 ZJS |
501 | /* Actually create a symlink, and remember that we did. This function is |
502 | * smart enough to check if there's already a valid symlink in place. | |
85158303 | 503 | * |
4f5c2485 ZJS |
504 | * Returns 1 if a symlink was created or already exists and points to the |
505 | * right place, or negative on error. | |
85158303 | 506 | */ |
0ec0deaa | 507 | |
35cd0ba5 | 508 | (void) mkdir_parents_label(new_path, 0755); |
0ec0deaa LP |
509 | |
510 | if (symlink(old_path, new_path) >= 0) { | |
511 | unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path); | |
3de15214 | 512 | return 1; |
0ec0deaa LP |
513 | } |
514 | ||
af3d8113 ZJS |
515 | if (errno != EEXIST) { |
516 | unit_file_changes_add(changes, n_changes, -errno, new_path, NULL); | |
0ec0deaa | 517 | return -errno; |
af3d8113 | 518 | } |
0ec0deaa LP |
519 | |
520 | r = readlink_malloc(new_path, &dest); | |
7d782f26 ZJS |
521 | if (r < 0) { |
522 | /* translate EINVAL (non-symlink exists) to EEXIST */ | |
523 | if (r == -EINVAL) | |
524 | r = -EEXIST; | |
525 | ||
526 | unit_file_changes_add(changes, n_changes, r, new_path, NULL); | |
0ec0deaa | 527 | return r; |
7d782f26 | 528 | } |
0ec0deaa | 529 | |
3fc53351 | 530 | if (chroot_unit_symlinks_equivalent(lp, new_path, dest, old_path)) { |
e2341b6b DT |
531 | log_debug("Symlink %s %s %s already exists", |
532 | new_path, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), dest); | |
85158303 | 533 | return 1; |
3e8d06d9 | 534 | } |
0ec0deaa | 535 | |
af3d8113 ZJS |
536 | if (!force) { |
537 | unit_file_changes_add(changes, n_changes, -EEXIST, new_path, dest); | |
0ec0deaa | 538 | return -EEXIST; |
af3d8113 | 539 | } |
0ec0deaa LP |
540 | |
541 | r = symlink_atomic(old_path, new_path); | |
7d782f26 ZJS |
542 | if (r < 0) { |
543 | unit_file_changes_add(changes, n_changes, r, new_path, NULL); | |
0ec0deaa | 544 | return r; |
7d782f26 | 545 | } |
0ec0deaa LP |
546 | |
547 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, new_path, NULL); | |
548 | unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path); | |
549 | ||
3de15214 | 550 | return 1; |
0ec0deaa LP |
551 | } |
552 | ||
83096483 LP |
553 | static int mark_symlink_for_removal( |
554 | Set **remove_symlinks_to, | |
555 | const char *p) { | |
556 | ||
557 | char *n; | |
558 | int r; | |
559 | ||
560 | assert(p); | |
561 | ||
548f6937 | 562 | r = set_ensure_allocated(remove_symlinks_to, &path_hash_ops); |
83096483 LP |
563 | if (r < 0) |
564 | return r; | |
565 | ||
566 | n = strdup(p); | |
567 | if (!n) | |
568 | return -ENOMEM; | |
569 | ||
4ff361cc | 570 | path_simplify(n); |
83096483 | 571 | |
ef42202a | 572 | r = set_consume(*remove_symlinks_to, n); |
d25e100b LP |
573 | if (r == -EEXIST) |
574 | return 0; | |
ef42202a | 575 | if (r < 0) |
d25e100b | 576 | return r; |
83096483 | 577 | |
0ec0deaa | 578 | return 1; |
83096483 LP |
579 | } |
580 | ||
581 | static int remove_marked_symlinks_fd( | |
582 | Set *remove_symlinks_to, | |
583 | int fd, | |
584 | const char *path, | |
585 | const char *config_path, | |
401017e0 | 586 | const LookupPaths *lp, |
3b3557c4 | 587 | bool dry_run, |
0ec0deaa | 588 | bool *restart, |
83096483 | 589 | UnitFileChange **changes, |
da6053d0 | 590 | size_t *n_changes) { |
83096483 | 591 | |
7fd1b19b | 592 | _cleanup_closedir_ DIR *d = NULL; |
bcafe923 | 593 | int r = 0; |
83096483 LP |
594 | |
595 | assert(remove_symlinks_to); | |
596 | assert(fd >= 0); | |
597 | assert(path); | |
598 | assert(config_path); | |
401017e0 | 599 | assert(lp); |
0ec0deaa | 600 | assert(restart); |
83096483 LP |
601 | |
602 | d = fdopendir(fd); | |
603 | if (!d) { | |
03e334a1 | 604 | safe_close(fd); |
83096483 LP |
605 | return -errno; |
606 | } | |
607 | ||
608 | rewinddir(d); | |
609 | ||
06693181 | 610 | FOREACH_DIRENT(de, d, return -errno) |
83096483 | 611 | |
83096483 | 612 | if (de->d_type == DT_DIR) { |
7fd1b19b | 613 | _cleanup_free_ char *p = NULL; |
d25e100b | 614 | int nfd, q; |
83096483 LP |
615 | |
616 | nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
617 | if (nfd < 0) { | |
618 | if (errno == ENOENT) | |
619 | continue; | |
620 | ||
621 | if (r == 0) | |
622 | r = -errno; | |
623 | continue; | |
624 | } | |
625 | ||
626 | p = path_make_absolute(de->d_name, path); | |
627 | if (!p) { | |
03e334a1 | 628 | safe_close(nfd); |
d9e5e694 | 629 | return -ENOMEM; |
83096483 LP |
630 | } |
631 | ||
632 | /* This will close nfd, regardless whether it succeeds or not */ | |
3b3557c4 | 633 | q = remove_marked_symlinks_fd(remove_symlinks_to, nfd, p, config_path, lp, dry_run, restart, changes, n_changes); |
bcafe923 | 634 | if (q < 0 && r == 0) |
83096483 LP |
635 | r = q; |
636 | ||
637 | } else if (de->d_type == DT_LNK) { | |
7a6c73da | 638 | _cleanup_free_ char *p = NULL; |
83096483 | 639 | bool found; |
0ec0deaa | 640 | int q; |
83096483 | 641 | |
7410616c | 642 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
bcafe923 LP |
643 | continue; |
644 | ||
83096483 | 645 | p = path_make_absolute(de->d_name, path); |
d9e5e694 ZJS |
646 | if (!p) |
647 | return -ENOMEM; | |
4ff361cc | 648 | path_simplify(p); |
83096483 | 649 | |
7a6c73da | 650 | /* We remove all links pointing to a file or path that is marked, as well as all |
9f61c9f7 ZJS |
651 | * files sharing the same name as a file that is marked, and files sharing the same |
652 | * name after the instance has been removed. Do path chasing only if we don't already | |
653 | * know that we want to remove the symlink. */ | |
7a6c73da | 654 | found = set_contains(remove_symlinks_to, de->d_name); |
212a24f0 | 655 | |
7a6c73da | 656 | if (!found) { |
9f61c9f7 ZJS |
657 | _cleanup_free_ char *template = NULL; |
658 | ||
659 | q = unit_name_template(de->d_name, &template); | |
660 | if (q < 0 && q != -EINVAL) | |
661 | return q; | |
662 | if (q >= 0) | |
663 | found = set_contains(remove_symlinks_to, template); | |
664 | } | |
7a6c73da | 665 | |
9f61c9f7 ZJS |
666 | if (!found) { |
667 | _cleanup_free_ char *dest = NULL; | |
7a6c73da ZJS |
668 | |
669 | q = chase_symlinks(p, lp->root_dir, CHASE_NONEXISTENT, &dest, NULL); | |
670 | if (q == -ENOENT) | |
671 | continue; | |
672 | if (q < 0) { | |
673 | log_debug_errno(q, "Failed to resolve symlink \"%s\": %m", p); | |
674 | unit_file_changes_add(changes, n_changes, q, p, NULL); | |
83096483 | 675 | |
7a6c73da ZJS |
676 | if (r == 0) |
677 | r = q; | |
678 | continue; | |
679 | } | |
680 | ||
681 | found = set_contains(remove_symlinks_to, dest) || | |
682 | set_contains(remove_symlinks_to, basename(dest)); | |
683 | ||
684 | } | |
0ec0deaa | 685 | |
83096483 | 686 | |
1dacfd2a LP |
687 | if (!found) |
688 | continue; | |
83096483 | 689 | |
3b3557c4 JS |
690 | if (!dry_run) { |
691 | if (unlinkat(fd, de->d_name, 0) < 0 && errno != ENOENT) { | |
692 | if (r == 0) | |
693 | r = -errno; | |
694 | unit_file_changes_add(changes, n_changes, -errno, p, NULL); | |
695 | continue; | |
696 | } | |
bcafe923 | 697 | |
3b3557c4 JS |
698 | (void) rmdir_parents(p, config_path); |
699 | } | |
83096483 | 700 | |
0ec0deaa | 701 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, p, NULL); |
1dacfd2a | 702 | |
12bf0ae4 ZJS |
703 | /* Now, remember the full path (but with the root prefix removed) of |
704 | * the symlink we just removed, and remove any symlinks to it, too. */ | |
401017e0 | 705 | |
7a6c73da | 706 | const char *rp = skip_root(lp->root_dir, p); |
401017e0 | 707 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: p); |
0ec0deaa LP |
708 | if (q < 0) |
709 | return q; | |
3b3557c4 | 710 | if (q > 0 && !dry_run) |
0ec0deaa | 711 | *restart = true; |
83096483 | 712 | } |
83096483 | 713 | |
83096483 LP |
714 | return r; |
715 | } | |
716 | ||
717 | static int remove_marked_symlinks( | |
718 | Set *remove_symlinks_to, | |
719 | const char *config_path, | |
401017e0 | 720 | const LookupPaths *lp, |
3b3557c4 | 721 | bool dry_run, |
83096483 | 722 | UnitFileChange **changes, |
da6053d0 | 723 | size_t *n_changes) { |
83096483 | 724 | |
da39f6a6 | 725 | _cleanup_close_ int fd = -1; |
0ec0deaa | 726 | bool restart; |
d25e100b | 727 | int r = 0; |
83096483 LP |
728 | |
729 | assert(config_path); | |
401017e0 | 730 | assert(lp); |
83096483 LP |
731 | |
732 | if (set_size(remove_symlinks_to) <= 0) | |
733 | return 0; | |
734 | ||
67852d08 | 735 | fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC); |
83096483 | 736 | if (fd < 0) |
32d9493e | 737 | return errno == ENOENT ? 0 : -errno; |
83096483 LP |
738 | |
739 | do { | |
740 | int q, cfd; | |
0ec0deaa | 741 | restart = false; |
83096483 | 742 | |
ead34950 | 743 | cfd = fcntl(fd, F_DUPFD_CLOEXEC, 3); |
d25e100b LP |
744 | if (cfd < 0) |
745 | return -errno; | |
83096483 LP |
746 | |
747 | /* This takes possession of cfd and closes it */ | |
3b3557c4 | 748 | q = remove_marked_symlinks_fd(remove_symlinks_to, cfd, config_path, config_path, lp, dry_run, &restart, changes, n_changes); |
83096483 LP |
749 | if (r == 0) |
750 | r = q; | |
0ec0deaa | 751 | } while (restart); |
83096483 | 752 | |
83096483 LP |
753 | return r; |
754 | } | |
755 | ||
d5c30911 | 756 | static int is_symlink_with_known_name(const UnitFileInstallInfo *i, const char *name) { |
5cd8ae31 ZJS |
757 | int r; |
758 | ||
759 | if (streq(name, i->name)) | |
760 | return true; | |
761 | ||
762 | if (strv_contains(i->aliases, name)) | |
763 | return true; | |
764 | ||
765 | /* Look for template symlink matching DefaultInstance */ | |
766 | if (i->default_instance && unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE)) { | |
767 | _cleanup_free_ char *s = NULL; | |
768 | ||
769 | r = unit_name_replace_instance(i->name, i->default_instance, &s); | |
770 | if (r < 0) { | |
771 | if (r != -EINVAL) | |
772 | return r; | |
773 | ||
774 | } else if (streq(name, s)) | |
775 | return true; | |
776 | } | |
777 | ||
778 | return false; | |
779 | } | |
780 | ||
43b4e305 MS |
781 | static int find_symlinks_in_directory( |
782 | DIR *dir, | |
783 | const char *dir_path, | |
0ec0deaa | 784 | const char *root_dir, |
4a84db4c | 785 | const UnitFileInstallInfo *info, |
466f6979 ZJS |
786 | bool ignore_destination, |
787 | bool match_name, | |
4b37c89f | 788 | bool ignore_same_name, |
83096483 LP |
789 | const char *config_path, |
790 | bool *same_name_link) { | |
791 | ||
d25e100b | 792 | int r = 0; |
83096483 | 793 | |
43b4e305 | 794 | FOREACH_DIRENT(de, dir, return -errno) { |
466f6979 | 795 | bool found_path = false, found_dest = false, b = false; |
43b4e305 | 796 | int q; |
83096483 | 797 | |
43b4e305 MS |
798 | if (de->d_type != DT_LNK) |
799 | continue; | |
83096483 | 800 | |
466f6979 ZJS |
801 | if (!ignore_destination) { |
802 | _cleanup_free_ char *dest = NULL; | |
803 | ||
804 | /* Acquire symlink destination */ | |
805 | q = readlinkat_malloc(dirfd(dir), de->d_name, &dest); | |
806 | if (q == -ENOENT) | |
807 | continue; | |
808 | if (q < 0) { | |
809 | if (r == 0) | |
810 | r = q; | |
811 | continue; | |
812 | } | |
83096483 | 813 | |
466f6979 ZJS |
814 | /* Make absolute */ |
815 | if (!path_is_absolute(dest)) { | |
816 | char *x; | |
83096483 | 817 | |
466f6979 ZJS |
818 | x = path_join(dir_path, dest); |
819 | if (!x) | |
820 | return -ENOMEM; | |
83096483 | 821 | |
466f6979 ZJS |
822 | free_and_replace(dest, x); |
823 | } | |
824 | ||
825 | /* Check if what the symlink points to matches what we are looking for */ | |
826 | found_dest = streq(basename(dest), info->name); | |
43b4e305 | 827 | } |
83096483 | 828 | |
4a84db4c | 829 | assert(unit_name_is_valid(info->name, UNIT_NAME_ANY)); |
0ec0deaa | 830 | |
466f6979 ZJS |
831 | /* Check if the symlink itself matches what we are looking for. |
832 | * | |
833 | * If ignore_destination is specified, we only look at the source name. | |
834 | * | |
835 | * If ignore_same_name is specified, we are in one of the directories which | |
836 | * have lower priority than the unit file, and even if a file or symlink with | |
837 | * this name was found, we should ignore it. */ | |
838 | ||
839 | if (ignore_destination || !ignore_same_name) | |
840 | found_path = streq(de->d_name, info->name); | |
841 | ||
842 | if (!found_path && ignore_destination) { | |
843 | _cleanup_free_ char *template = NULL; | |
844 | ||
845 | q = unit_name_template(de->d_name, &template); | |
846 | if (q < 0 && q != -EINVAL) | |
847 | return q; | |
848 | if (q >= 0) | |
849 | found_dest = streq(template, info->name); | |
850 | } | |
0ec0deaa | 851 | |
43b4e305 MS |
852 | if (found_path && found_dest) { |
853 | _cleanup_free_ char *p = NULL, *t = NULL; | |
0ec0deaa | 854 | |
466f6979 | 855 | /* Filter out same name links in the main config path */ |
43b4e305 | 856 | p = path_make_absolute(de->d_name, dir_path); |
4a84db4c | 857 | t = path_make_absolute(info->name, config_path); |
83096483 | 858 | |
43b4e305 MS |
859 | if (!p || !t) |
860 | return -ENOMEM; | |
83096483 | 861 | |
43b4e305 MS |
862 | b = path_equal(p, t); |
863 | } | |
83096483 | 864 | |
43b4e305 MS |
865 | if (b) |
866 | *same_name_link = true; | |
867 | else if (found_path || found_dest) { | |
466f6979 | 868 | if (!match_name) |
43b4e305 | 869 | return 1; |
83096483 | 870 | |
43b4e305 | 871 | /* Check if symlink name is in the set of names used by [Install] */ |
4a84db4c | 872 | q = is_symlink_with_known_name(info, de->d_name); |
43b4e305 MS |
873 | if (q < 0) |
874 | return q; | |
875 | if (q > 0) | |
876 | return 1; | |
83096483 LP |
877 | } |
878 | } | |
d25e100b LP |
879 | |
880 | return r; | |
83096483 LP |
881 | } |
882 | ||
883 | static int find_symlinks( | |
0ec0deaa | 884 | const char *root_dir, |
26526f98 | 885 | const UnitFileInstallInfo *i, |
d9b4b48f | 886 | bool match_name, |
4b37c89f | 887 | bool ignore_same_name, |
83096483 LP |
888 | const char *config_path, |
889 | bool *same_name_link) { | |
890 | ||
43b4e305 | 891 | _cleanup_closedir_ DIR *config_dir = NULL; |
43b4e305 | 892 | int r = 0; |
83096483 | 893 | |
5cd8ae31 | 894 | assert(i); |
83096483 LP |
895 | assert(config_path); |
896 | assert(same_name_link); | |
897 | ||
43b4e305 MS |
898 | config_dir = opendir(config_path); |
899 | if (!config_dir) { | |
a1feacf7 | 900 | if (IN_SET(errno, ENOENT, ENOTDIR, EACCES)) |
d5891fda | 901 | return 0; |
83096483 | 902 | return -errno; |
d5891fda | 903 | } |
83096483 | 904 | |
43b4e305 MS |
905 | FOREACH_DIRENT(de, config_dir, return -errno) { |
906 | const char *suffix; | |
907 | _cleanup_free_ const char *path = NULL; | |
908 | _cleanup_closedir_ DIR *d = NULL; | |
909 | ||
43b4e305 MS |
910 | if (de->d_type != DT_DIR) |
911 | continue; | |
912 | ||
913 | suffix = strrchr(de->d_name, '.'); | |
914 | if (!STRPTR_IN_SET(suffix, ".wants", ".requires")) | |
915 | continue; | |
916 | ||
917 | path = path_join(config_path, de->d_name); | |
918 | if (!path) | |
919 | return -ENOMEM; | |
920 | ||
921 | d = opendir(path); | |
922 | if (!d) { | |
e75a26d0 | 923 | log_error_errno(errno, "Failed to open directory \"%s\" while scanning for symlinks, ignoring: %m", path); |
43b4e305 MS |
924 | continue; |
925 | } | |
926 | ||
466f6979 ZJS |
927 | r = find_symlinks_in_directory(d, path, root_dir, i, |
928 | /* ignore_destination= */ true, | |
929 | /* match_name= */ match_name, | |
930 | /* ignore_same_name= */ ignore_same_name, | |
931 | config_path, | |
932 | same_name_link); | |
43b4e305 MS |
933 | if (r > 0) |
934 | return 1; | |
935 | else if (r < 0) | |
e75a26d0 | 936 | log_debug_errno(r, "Failed to look up symlinks in \"%s\": %m", path); |
43b4e305 MS |
937 | } |
938 | ||
939 | /* We didn't find any suitable symlinks in .wants or .requires directories, let's look for linked unit files in this directory. */ | |
940 | rewinddir(config_dir); | |
466f6979 ZJS |
941 | return find_symlinks_in_directory(config_dir, config_path, root_dir, i, |
942 | /* ignore_destination= */ false, | |
943 | /* match_name= */ match_name, | |
944 | /* ignore_same_name= */ ignore_same_name, | |
945 | config_path, | |
946 | same_name_link); | |
83096483 LP |
947 | } |
948 | ||
949 | static int find_symlinks_in_scope( | |
b380b643 | 950 | LookupScope scope, |
c3e7fba0 | 951 | const LookupPaths *lp, |
4a84db4c | 952 | const UnitFileInstallInfo *info, |
d9b4b48f | 953 | bool match_name, |
83096483 LP |
954 | UnitFileState *state) { |
955 | ||
dfead90d LP |
956 | bool same_name_link_runtime = false, same_name_link_config = false; |
957 | bool enabled_in_runtime = false, enabled_at_all = false; | |
4b37c89f | 958 | bool ignore_same_name = false; |
0ec0deaa | 959 | int r; |
83096483 | 960 | |
c3e7fba0 | 961 | assert(lp); |
4a84db4c | 962 | assert(info); |
83096483 | 963 | |
c3e7fba0 | 964 | /* As we iterate over the list of search paths in lp->search_path, we may encounter "same name" |
4b37c89f | 965 | * symlinks. The ones which are "below" (i.e. have lower priority) than the unit file itself are |
5238e957 | 966 | * effectively masked, so we should ignore them. */ |
4b37c89f | 967 | |
c3e7fba0 | 968 | STRV_FOREACH(p, lp->search_path) { |
dfead90d LP |
969 | bool same_name_link = false; |
970 | ||
4a84db4c | 971 | r = find_symlinks(lp->root_dir, info, match_name, ignore_same_name, *p, &same_name_link); |
dfead90d LP |
972 | if (r < 0) |
973 | return r; | |
974 | if (r > 0) { | |
975 | /* We found symlinks in this dir? Yay! Let's see where precisely it is enabled. */ | |
976 | ||
c3e7fba0 | 977 | if (path_equal_ptr(*p, lp->persistent_config)) { |
dfead90d LP |
978 | /* This is the best outcome, let's return it immediately. */ |
979 | *state = UNIT_FILE_ENABLED; | |
980 | return 1; | |
981 | } | |
982 | ||
bb2682bc | 983 | /* look for global enablement of user units */ |
b380b643 | 984 | if (scope == LOOKUP_SCOPE_USER && path_is_user_config_dir(*p)) { |
d2561cfd ZJS |
985 | *state = UNIT_FILE_ENABLED; |
986 | return 1; | |
987 | } | |
988 | ||
c3e7fba0 | 989 | r = path_is_runtime(lp, *p, false); |
dfead90d LP |
990 | if (r < 0) |
991 | return r; | |
992 | if (r > 0) | |
993 | enabled_in_runtime = true; | |
994 | else | |
995 | enabled_at_all = true; | |
996 | ||
997 | } else if (same_name_link) { | |
c3e7fba0 | 998 | if (path_equal_ptr(*p, lp->persistent_config)) |
dfead90d LP |
999 | same_name_link_config = true; |
1000 | else { | |
c3e7fba0 | 1001 | r = path_is_runtime(lp, *p, false); |
dfead90d LP |
1002 | if (r < 0) |
1003 | return r; | |
1004 | if (r > 0) | |
1005 | same_name_link_runtime = true; | |
1006 | } | |
1007 | } | |
4b37c89f ZJS |
1008 | |
1009 | /* Check if next iteration will be "below" the unit file (either a regular file | |
1010 | * or a symlink), and hence should be ignored */ | |
4a84db4c | 1011 | if (!ignore_same_name && path_startswith(info->path, *p)) |
4b37c89f | 1012 | ignore_same_name = true; |
83096483 LP |
1013 | } |
1014 | ||
dfead90d | 1015 | if (enabled_in_runtime) { |
0ec0deaa | 1016 | *state = UNIT_FILE_ENABLED_RUNTIME; |
dfead90d LP |
1017 | return 1; |
1018 | } | |
1019 | ||
1020 | /* Here's a special rule: if the unit we are looking for is an instance, and it symlinked in the search path | |
1021 | * outside of runtime and configuration directory, then we consider it statically enabled. Note we do that only | |
1022 | * for instance, not for regular names, as those are merely aliases, while instances explicitly instantiate | |
1023 | * something, and hence are a much stronger concept. */ | |
4a84db4c | 1024 | if (enabled_at_all && unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { |
dfead90d LP |
1025 | *state = UNIT_FILE_STATIC; |
1026 | return 1; | |
83096483 LP |
1027 | } |
1028 | ||
1029 | /* Hmm, we didn't find it, but maybe we found the same name | |
1030 | * link? */ | |
dfead90d | 1031 | if (same_name_link_config) { |
0ec0deaa LP |
1032 | *state = UNIT_FILE_LINKED; |
1033 | return 1; | |
1034 | } | |
83096483 LP |
1035 | if (same_name_link_runtime) { |
1036 | *state = UNIT_FILE_LINKED_RUNTIME; | |
1037 | return 1; | |
83096483 LP |
1038 | } |
1039 | ||
1040 | return 0; | |
1041 | } | |
1042 | ||
0ec0deaa | 1043 | static void install_info_free(UnitFileInstallInfo *i) { |
0ec0deaa LP |
1044 | if (!i) |
1045 | return; | |
83096483 | 1046 | |
0ec0deaa LP |
1047 | free(i->name); |
1048 | free(i->path); | |
de61a04b | 1049 | free(i->root); |
0ec0deaa LP |
1050 | strv_free(i->aliases); |
1051 | strv_free(i->wanted_by); | |
1052 | strv_free(i->required_by); | |
1053 | strv_free(i->also); | |
1054 | free(i->default_instance); | |
1055 | free(i->symlink_target); | |
1056 | free(i); | |
1057 | } | |
83096483 | 1058 | |
4a84db4c ZJS |
1059 | static void install_context_done(InstallContext *ctx) { |
1060 | assert(ctx); | |
83096483 | 1061 | |
4a84db4c ZJS |
1062 | ctx->will_process = ordered_hashmap_free_with_destructor(ctx->will_process, install_info_free); |
1063 | ctx->have_processed = ordered_hashmap_free_with_destructor(ctx->have_processed, install_info_free); | |
0ec0deaa | 1064 | } |
83096483 | 1065 | |
4a84db4c | 1066 | static UnitFileInstallInfo *install_info_find(InstallContext *ctx, const char *name) { |
0ec0deaa | 1067 | UnitFileInstallInfo *i; |
83096483 | 1068 | |
4a84db4c | 1069 | i = ordered_hashmap_get(ctx->have_processed, name); |
0ec0deaa LP |
1070 | if (i) |
1071 | return i; | |
83096483 | 1072 | |
4a84db4c | 1073 | return ordered_hashmap_get(ctx->will_process, name); |
83096483 LP |
1074 | } |
1075 | ||
af3d8113 | 1076 | static int install_info_may_process( |
26526f98 | 1077 | const UnitFileInstallInfo *i, |
c3e7fba0 | 1078 | const LookupPaths *lp, |
af3d8113 | 1079 | UnitFileChange **changes, |
da6053d0 | 1080 | size_t *n_changes) { |
76adb5b8 | 1081 | assert(i); |
c3e7fba0 | 1082 | assert(lp); |
76adb5b8 | 1083 | |
047d91f9 ZJS |
1084 | /* Checks whether the loaded unit file is one we should process, or is masked, |
1085 | * transient or generated and thus not subject to enable/disable operations. */ | |
76adb5b8 | 1086 | |
af3d8113 ZJS |
1087 | if (i->type == UNIT_FILE_TYPE_MASKED) { |
1088 | unit_file_changes_add(changes, n_changes, -ERFKILL, i->path, NULL); | |
76ec966f | 1089 | return -ERFKILL; |
af3d8113 | 1090 | } |
c3e7fba0 ZJS |
1091 | if (path_is_generator(lp, i->path) || |
1092 | path_is_transient(lp, i->path)) { | |
af3d8113 | 1093 | unit_file_changes_add(changes, n_changes, -EADDRNOTAVAIL, i->path, NULL); |
76adb5b8 | 1094 | return -EADDRNOTAVAIL; |
af3d8113 | 1095 | } |
76adb5b8 LP |
1096 | |
1097 | return 0; | |
1098 | } | |
1099 | ||
ff56349d ZJS |
1100 | /** |
1101 | * Adds a new UnitFileInstallInfo entry under name in the InstallContext.will_process | |
1102 | * hashmap, or retrieves the existing one if already present. | |
19539807 ZJS |
1103 | * |
1104 | * Returns negative on error, 0 if the unit was already known, 1 otherwise. | |
ff56349d | 1105 | */ |
83096483 | 1106 | static int install_info_add( |
4a84db4c | 1107 | InstallContext *ctx, |
83096483 | 1108 | const char *name, |
0ec0deaa | 1109 | const char *path, |
de61a04b | 1110 | const char *root, |
19539807 | 1111 | bool auxiliary, |
0ec0deaa LP |
1112 | UnitFileInstallInfo **ret) { |
1113 | ||
cab6235f | 1114 | UnitFileInstallInfo *i = NULL; |
83096483 LP |
1115 | int r; |
1116 | ||
4a84db4c | 1117 | assert(ctx); |
83096483 | 1118 | |
08f46856 BR |
1119 | if (!name) { |
1120 | /* 'name' and 'path' must not both be null. Check here 'path' using assert_se() to | |
1121 | * workaround a bug in gcc that generates a -Wnonnull warning when calling basename(), | |
1122 | * but this cannot be possible in any code path (See #6119). */ | |
1123 | assert_se(path); | |
2b6bf07d | 1124 | name = basename(path); |
08f46856 | 1125 | } |
83096483 | 1126 | |
7410616c | 1127 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
83096483 LP |
1128 | return -EINVAL; |
1129 | ||
4a84db4c | 1130 | i = install_info_find(ctx, name); |
0ec0deaa | 1131 | if (i) { |
19539807 ZJS |
1132 | i->auxiliary = i->auxiliary && auxiliary; |
1133 | ||
0ec0deaa LP |
1134 | if (ret) |
1135 | *ret = i; | |
83096483 | 1136 | return 0; |
0ec0deaa | 1137 | } |
83096483 | 1138 | |
d23aeead | 1139 | i = new(UnitFileInstallInfo, 1); |
83096483 LP |
1140 | if (!i) |
1141 | return -ENOMEM; | |
d23aeead LP |
1142 | |
1143 | *i = (UnitFileInstallInfo) { | |
1144 | .type = _UNIT_FILE_TYPE_INVALID, | |
1145 | .auxiliary = auxiliary, | |
1146 | }; | |
83096483 LP |
1147 | |
1148 | i->name = strdup(name); | |
1149 | if (!i->name) { | |
1150 | r = -ENOMEM; | |
1151 | goto fail; | |
1152 | } | |
1153 | ||
de61a04b LP |
1154 | if (root) { |
1155 | i->root = strdup(root); | |
1156 | if (!i->root) { | |
1157 | r = -ENOMEM; | |
1158 | goto fail; | |
1159 | } | |
1160 | } | |
1161 | ||
83096483 LP |
1162 | if (path) { |
1163 | i->path = strdup(path); | |
1164 | if (!i->path) { | |
1165 | r = -ENOMEM; | |
1166 | goto fail; | |
1167 | } | |
1168 | } | |
1169 | ||
4a84db4c | 1170 | r = ordered_hashmap_ensure_put(&ctx->will_process, &string_hash_ops, i->name, i); |
83096483 LP |
1171 | if (r < 0) |
1172 | goto fail; | |
1173 | ||
0ec0deaa LP |
1174 | if (ret) |
1175 | *ret = i; | |
1176 | ||
19539807 | 1177 | return 1; |
83096483 LP |
1178 | |
1179 | fail: | |
d25e100b | 1180 | install_info_free(i); |
83096483 LP |
1181 | return r; |
1182 | } | |
1183 | ||
a7724589 ZJS |
1184 | static int config_parse_alias( |
1185 | const char *unit, | |
1186 | const char *filename, | |
1187 | unsigned line, | |
1188 | const char *section, | |
1189 | unsigned section_line, | |
1190 | const char *lvalue, | |
1191 | int ltype, | |
1192 | const char *rvalue, | |
1193 | void *data, | |
1194 | void *userdata) { | |
1195 | ||
a7724589 ZJS |
1196 | UnitType type; |
1197 | ||
142468d8 | 1198 | assert(unit); |
a7724589 ZJS |
1199 | assert(filename); |
1200 | assert(lvalue); | |
1201 | assert(rvalue); | |
1202 | ||
142468d8 | 1203 | type = unit_name_to_type(unit); |
a7724589 ZJS |
1204 | if (!unit_type_may_alias(type)) |
1205 | return log_syntax(unit, LOG_WARNING, filename, line, 0, | |
3b8769bd | 1206 | "Alias= is not allowed for %s units, ignoring.", |
a7724589 ZJS |
1207 | unit_type_to_string(type)); |
1208 | ||
1209 | return config_parse_strv(unit, filename, line, section, section_line, | |
1210 | lvalue, ltype, rvalue, data, userdata); | |
1211 | } | |
1212 | ||
d54c4993 LP |
1213 | static int config_parse_also( |
1214 | const char *unit, | |
1215 | const char *filename, | |
1216 | unsigned line, | |
1217 | const char *section, | |
1218 | unsigned section_line, | |
1219 | const char *lvalue, | |
1220 | int ltype, | |
1221 | const char *rvalue, | |
1222 | void *data, | |
1223 | void *userdata) { | |
83096483 | 1224 | |
4a84db4c ZJS |
1225 | UnitFileInstallInfo *info = ASSERT_PTR(userdata); |
1226 | InstallContext *ctx = ASSERT_PTR(data); | |
0ec0deaa | 1227 | int r; |
83096483 | 1228 | |
142468d8 | 1229 | assert(unit); |
83096483 LP |
1230 | assert(filename); |
1231 | assert(lvalue); | |
1232 | assert(rvalue); | |
1233 | ||
0ec0deaa | 1234 | for (;;) { |
a6612e65 | 1235 | _cleanup_free_ char *word = NULL, *printed = NULL; |
03da6513 | 1236 | |
0ec0deaa LP |
1237 | r = extract_first_word(&rvalue, &word, NULL, 0); |
1238 | if (r < 0) | |
1239 | return r; | |
03da6513 SS |
1240 | if (r == 0) |
1241 | break; | |
83096483 | 1242 | |
38e8a6c7 | 1243 | r = install_name_printf(ctx->scope, info, word, &printed); |
d9e5e694 | 1244 | if (r < 0) |
6ec4c852 ZJS |
1245 | return log_syntax(unit, LOG_WARNING, filename, line, r, |
1246 | "Failed to resolve unit name in Also=\"%s\": %m", word); | |
aedd4012 | 1247 | |
4a84db4c | 1248 | r = install_info_add(ctx, printed, NULL, info->root, /* auxiliary= */ true, NULL); |
d9e5e694 | 1249 | if (r < 0) |
83096483 | 1250 | return r; |
aedd4012 | 1251 | |
a6612e65 | 1252 | r = strv_push(&info->also, printed); |
aedd4012 JS |
1253 | if (r < 0) |
1254 | return r; | |
0ec0deaa | 1255 | |
a6612e65 | 1256 | printed = NULL; |
83096483 LP |
1257 | } |
1258 | ||
1259 | return 0; | |
1260 | } | |
1261 | ||
d54c4993 LP |
1262 | static int config_parse_default_instance( |
1263 | const char *unit, | |
1264 | const char *filename, | |
1265 | unsigned line, | |
1266 | const char *section, | |
1267 | unsigned section_line, | |
1268 | const char *lvalue, | |
1269 | int ltype, | |
1270 | const char *rvalue, | |
1271 | void *data, | |
1272 | void *userdata) { | |
1273 | ||
172e9cc3 | 1274 | InstallContext *ctx = ASSERT_PTR(data); |
4a84db4c | 1275 | UnitFileInstallInfo *info = ASSERT_PTR(userdata); |
d7604756 | 1276 | _cleanup_free_ char *printed = NULL; |
d54c4993 LP |
1277 | int r; |
1278 | ||
142468d8 | 1279 | assert(unit); |
d54c4993 LP |
1280 | assert(filename); |
1281 | assert(lvalue); | |
1282 | assert(rvalue); | |
1283 | ||
142468d8 | 1284 | if (unit_name_is_valid(unit, UNIT_NAME_INSTANCE)) |
6597fa61 ZJS |
1285 | /* When enabling an instance, we might be using a template unit file, |
1286 | * but we should ignore DefaultInstance silently. */ | |
1287 | return 0; | |
142468d8 | 1288 | if (!unit_name_is_valid(unit, UNIT_NAME_TEMPLATE)) |
6597fa61 | 1289 | return log_syntax(unit, LOG_WARNING, filename, line, 0, |
10d67460 | 1290 | "DefaultInstance= only makes sense for template units, ignoring."); |
6597fa61 | 1291 | |
38e8a6c7 | 1292 | r = install_name_printf(ctx->scope, info, rvalue, &printed); |
d54c4993 | 1293 | if (r < 0) |
6ec4c852 ZJS |
1294 | return log_syntax(unit, LOG_WARNING, filename, line, r, |
1295 | "Failed to resolve instance name in DefaultInstance=\"%s\": %m", rvalue); | |
d54c4993 | 1296 | |
6ec4c852 ZJS |
1297 | if (isempty(printed)) |
1298 | printed = mfree(printed); | |
b5395600 | 1299 | |
6ec4c852 | 1300 | if (printed && !unit_instance_is_valid(printed)) |
e5171296 ZJS |
1301 | return log_syntax(unit, LOG_WARNING, filename, line, SYNTHETIC_ERRNO(EINVAL), |
1302 | "Invalid DefaultInstance= value \"%s\".", printed); | |
d54c4993 | 1303 | |
4a84db4c | 1304 | return free_and_replace(info->default_instance, printed); |
d54c4993 LP |
1305 | } |
1306 | ||
83096483 | 1307 | static int unit_file_load( |
4a84db4c | 1308 | InstallContext *ctx, |
cab6235f | 1309 | UnitFileInstallInfo *info, |
83096483 | 1310 | const char *path, |
d04a9386 | 1311 | const char *root_dir, |
0ec0deaa | 1312 | SearchFlags flags) { |
83096483 | 1313 | |
f975e971 | 1314 | const ConfigTableItem items[] = { |
a7724589 | 1315 | { "Install", "Alias", config_parse_alias, 0, &info->aliases }, |
d54c4993 LP |
1316 | { "Install", "WantedBy", config_parse_strv, 0, &info->wanted_by }, |
1317 | { "Install", "RequiredBy", config_parse_strv, 0, &info->required_by }, | |
1318 | { "Install", "DefaultInstance", config_parse_default_instance, 0, info }, | |
4a84db4c | 1319 | { "Install", "Also", config_parse_also, 0, ctx }, |
d54c4993 | 1320 | {} |
83096483 LP |
1321 | }; |
1322 | ||
133e5b36 | 1323 | UnitType type; |
7fd1b19b | 1324 | _cleanup_fclose_ FILE *f = NULL; |
0ec0deaa LP |
1325 | _cleanup_close_ int fd = -1; |
1326 | struct stat st; | |
1327 | int r; | |
83096483 | 1328 | |
83096483 LP |
1329 | assert(info); |
1330 | assert(path); | |
1331 | ||
d04a9386 LP |
1332 | if (!(flags & SEARCH_DROPIN)) { |
1333 | /* Loading or checking for the main unit file… */ | |
133e5b36 | 1334 | |
d04a9386 LP |
1335 | type = unit_name_to_type(info->name); |
1336 | if (type < 0) | |
1337 | return -EINVAL; | |
baaa35ad ZJS |
1338 | if (unit_name_is_valid(info->name, UNIT_NAME_TEMPLATE|UNIT_NAME_INSTANCE) && !unit_type_may_template(type)) |
1339 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
bce84e10 | 1340 | "%s: unit type %s cannot be templated, ignoring.", path, unit_type_to_string(type)); |
d04a9386 LP |
1341 | |
1342 | if (!(flags & SEARCH_LOAD)) { | |
4276749d | 1343 | if (lstat(path, &st) < 0) |
d04a9386 LP |
1344 | return -errno; |
1345 | ||
1346 | if (null_or_empty(&st)) | |
1347 | info->type = UNIT_FILE_TYPE_MASKED; | |
1348 | else if (S_ISREG(st.st_mode)) | |
1349 | info->type = UNIT_FILE_TYPE_REGULAR; | |
1350 | else if (S_ISLNK(st.st_mode)) | |
1351 | return -ELOOP; | |
1352 | else if (S_ISDIR(st.st_mode)) | |
1353 | return -EISDIR; | |
1354 | else | |
1355 | return -ENOTTY; | |
1356 | ||
1357 | return 0; | |
1358 | } | |
1359 | ||
1360 | fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW); | |
1361 | if (fd < 0) | |
d25e100b | 1362 | return -errno; |
d04a9386 LP |
1363 | } else { |
1364 | /* 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 | 1365 | |
d04a9386 LP |
1366 | if (!(flags & SEARCH_LOAD)) |
1367 | return 0; | |
0ec0deaa | 1368 | |
d04a9386 LP |
1369 | fd = chase_symlinks_and_open(path, root_dir, 0, O_RDONLY|O_CLOEXEC|O_NOCTTY, NULL); |
1370 | if (fd < 0) | |
1371 | return fd; | |
e94937df LN |
1372 | } |
1373 | ||
0ec0deaa LP |
1374 | if (fstat(fd, &st) < 0) |
1375 | return -errno; | |
d04a9386 | 1376 | |
0ec0deaa | 1377 | if (null_or_empty(&st)) { |
d04a9386 LP |
1378 | if ((flags & SEARCH_DROPIN) == 0) |
1379 | info->type = UNIT_FILE_TYPE_MASKED; | |
1380 | ||
0ec0deaa LP |
1381 | return 0; |
1382 | } | |
3cc44114 LP |
1383 | |
1384 | r = stat_verify_regular(&st); | |
1385 | if (r < 0) | |
1386 | return r; | |
83096483 | 1387 | |
4fa744a3 | 1388 | f = take_fdopen(&fd, "r"); |
0ec0deaa LP |
1389 | if (!f) |
1390 | return -errno; | |
83096483 | 1391 | |
4a84db4c ZJS |
1392 | /* ctx is only needed if we actually load the file (it's referenced from items[] btw, in case you wonder.) */ |
1393 | assert(ctx); | |
d04a9386 | 1394 | |
142468d8 | 1395 | r = config_parse(info->name, path, f, |
f4331d0d ZJS |
1396 | "Install\0" |
1397 | "-Unit\0" | |
1398 | "-Automount\0" | |
1399 | "-Device\0" | |
1400 | "-Mount\0" | |
1401 | "-Path\0" | |
1402 | "-Scope\0" | |
1403 | "-Service\0" | |
1404 | "-Slice\0" | |
1405 | "-Socket\0" | |
1406 | "-Swap\0" | |
1407 | "-Target\0" | |
1408 | "-Timer\0", | |
36f822c4 | 1409 | config_item_table_lookup, items, |
7ade8982 | 1410 | 0, info, |
4f9ff96a | 1411 | NULL); |
83096483 | 1412 | if (r < 0) |
e75a26d0 | 1413 | return log_debug_errno(r, "Failed to parse \"%s\": %m", info->name); |
83096483 | 1414 | |
d04a9386 LP |
1415 | if ((flags & SEARCH_DROPIN) == 0) |
1416 | info->type = UNIT_FILE_TYPE_REGULAR; | |
aedd4012 | 1417 | |
78d54bd4 | 1418 | return |
693eb9a2 LP |
1419 | (int) strv_length(info->aliases) + |
1420 | (int) strv_length(info->wanted_by) + | |
1421 | (int) strv_length(info->required_by); | |
83096483 LP |
1422 | } |
1423 | ||
0ec0deaa | 1424 | static int unit_file_load_or_readlink( |
4a84db4c | 1425 | InstallContext *ctx, |
0ec0deaa LP |
1426 | UnitFileInstallInfo *info, |
1427 | const char *path, | |
c3e7fba0 | 1428 | const LookupPaths *lp, |
0ec0deaa | 1429 | SearchFlags flags) { |
0ec0deaa LP |
1430 | int r; |
1431 | ||
4a84db4c | 1432 | r = unit_file_load(ctx, info, path, lp->root_dir, flags); |
d04a9386 | 1433 | if (r != -ELOOP || (flags & SEARCH_DROPIN)) |
0ec0deaa LP |
1434 | return r; |
1435 | ||
047d37dc ZJS |
1436 | /* This is a symlink, let's read and verify it. */ |
1437 | r = unit_file_resolve_symlink(lp->root_dir, lp->search_path, | |
1438 | NULL, AT_FDCWD, path, | |
1439 | true, &info->symlink_target); | |
1440 | if (r < 0) | |
1441 | return r; | |
48ed75ad | 1442 | bool outside_search_path = r > 0; |
4276749d | 1443 | |
047d37dc ZJS |
1444 | r = null_or_empty_path_with_root(info->symlink_target, lp->root_dir); |
1445 | if (r < 0 && r != -ENOENT) | |
1446 | return log_debug_errno(r, "Failed to stat %s: %m", info->symlink_target); | |
1447 | if (r > 0) | |
4276749d | 1448 | info->type = UNIT_FILE_TYPE_MASKED; |
48ed75ad ZJS |
1449 | else if (outside_search_path) |
1450 | info->type = UNIT_FILE_TYPE_LINKED; | |
047d37dc | 1451 | else |
48ed75ad | 1452 | info->type = UNIT_FILE_TYPE_ALIAS; |
0ec0deaa LP |
1453 | |
1454 | return 0; | |
1455 | } | |
1456 | ||
83096483 | 1457 | static int unit_file_search( |
4a84db4c | 1458 | InstallContext *ctx, |
cab6235f | 1459 | UnitFileInstallInfo *info, |
c3e7fba0 | 1460 | const LookupPaths *lp, |
0ec0deaa | 1461 | SearchFlags flags) { |
83096483 | 1462 | |
d04a9386 LP |
1463 | const char *dropin_dir_name = NULL, *dropin_template_dir_name = NULL; |
1464 | _cleanup_strv_free_ char **dirs = NULL, **files = NULL; | |
64f9280e | 1465 | _cleanup_free_ char *template = NULL; |
142468d8 | 1466 | bool found_unit = false; |
d04a9386 | 1467 | int r, result; |
83096483 | 1468 | |
83096483 | 1469 | assert(info); |
c3e7fba0 | 1470 | assert(lp); |
83096483 | 1471 | |
0ec0deaa LP |
1472 | /* Was this unit already loaded? */ |
1473 | if (info->type != _UNIT_FILE_TYPE_INVALID) | |
1474 | return 0; | |
1475 | ||
278fa575 | 1476 | if (info->path) |
4a84db4c | 1477 | return unit_file_load_or_readlink(ctx, info, info->path, lp, flags); |
83096483 LP |
1478 | |
1479 | assert(info->name); | |
1480 | ||
142468d8 JL |
1481 | if (unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { |
1482 | r = unit_name_template(info->name, &template); | |
1483 | if (r < 0) | |
1484 | return r; | |
1485 | } | |
1486 | ||
c3e7fba0 | 1487 | STRV_FOREACH(p, lp->search_path) { |
e50bd775 | 1488 | _cleanup_free_ char *path = NULL; |
83096483 | 1489 | |
657ee2d8 | 1490 | path = path_join(*p, info->name); |
83096483 LP |
1491 | if (!path) |
1492 | return -ENOMEM; | |
1493 | ||
4a84db4c | 1494 | r = unit_file_load_or_readlink(ctx, info, path, lp, flags); |
0155928c | 1495 | if (r >= 0) { |
ae2a15bc | 1496 | info->path = TAKE_PTR(path); |
142468d8 JL |
1497 | result = r; |
1498 | found_unit = true; | |
1499 | break; | |
a1feacf7 | 1500 | } else if (!IN_SET(r, -ENOENT, -ENOTDIR, -EACCES)) |
0155928c | 1501 | return r; |
e50bd775 | 1502 | } |
62b00233 | 1503 | |
142468d8 JL |
1504 | if (!found_unit && template) { |
1505 | ||
e50bd775 LP |
1506 | /* Unit file doesn't exist, however instance |
1507 | * enablement was requested. We will check if it is | |
1508 | * possible to load template unit file. */ | |
29283ea4 | 1509 | |
c3e7fba0 | 1510 | STRV_FOREACH(p, lp->search_path) { |
e50bd775 LP |
1511 | _cleanup_free_ char *path = NULL; |
1512 | ||
657ee2d8 | 1513 | path = path_join(*p, template); |
62b00233 ZJS |
1514 | if (!path) |
1515 | return -ENOMEM; | |
29283ea4 | 1516 | |
4a84db4c | 1517 | r = unit_file_load_or_readlink(ctx, info, path, lp, flags); |
0155928c | 1518 | if (r >= 0) { |
ae2a15bc | 1519 | info->path = TAKE_PTR(path); |
142468d8 JL |
1520 | result = r; |
1521 | found_unit = true; | |
1522 | break; | |
a1feacf7 | 1523 | } else if (!IN_SET(r, -ENOENT, -ENOTDIR, -EACCES)) |
0155928c | 1524 | return r; |
29283ea4 | 1525 | } |
83096483 LP |
1526 | } |
1527 | ||
baaa35ad ZJS |
1528 | if (!found_unit) |
1529 | return log_debug_errno(SYNTHETIC_ERRNO(ENOENT), | |
1530 | "Cannot find unit %s%s%s.", | |
1531 | info->name, template ? " or " : "", strempty(template)); | |
142468d8 | 1532 | |
9639b175 FB |
1533 | if (info->type == UNIT_FILE_TYPE_MASKED) |
1534 | return result; | |
1535 | ||
142468d8 JL |
1536 | /* Search for drop-in directories */ |
1537 | ||
1538 | dropin_dir_name = strjoina(info->name, ".d"); | |
c3e7fba0 | 1539 | STRV_FOREACH(p, lp->search_path) { |
142468d8 JL |
1540 | char *path; |
1541 | ||
62a85ee0 | 1542 | path = path_join(*p, dropin_dir_name); |
142468d8 JL |
1543 | if (!path) |
1544 | return -ENOMEM; | |
1545 | ||
1546 | r = strv_consume(&dirs, path); | |
1547 | if (r < 0) | |
1548 | return r; | |
1549 | } | |
1550 | ||
1551 | if (template) { | |
1552 | dropin_template_dir_name = strjoina(template, ".d"); | |
c3e7fba0 | 1553 | STRV_FOREACH(p, lp->search_path) { |
142468d8 JL |
1554 | char *path; |
1555 | ||
62a85ee0 | 1556 | path = path_join(*p, dropin_template_dir_name); |
142468d8 JL |
1557 | if (!path) |
1558 | return -ENOMEM; | |
1559 | ||
1560 | r = strv_consume(&dirs, path); | |
1561 | if (r < 0) | |
1562 | return r; | |
1563 | } | |
1564 | } | |
1565 | ||
1566 | /* Load drop-in conf files */ | |
1567 | ||
1568 | r = conf_files_list_strv(&files, ".conf", NULL, 0, (const char**) dirs); | |
1569 | if (r < 0) | |
1570 | return log_debug_errno(r, "Failed to get list of conf files: %m"); | |
1571 | ||
1572 | STRV_FOREACH(p, files) { | |
4a84db4c | 1573 | r = unit_file_load_or_readlink(ctx, info, *p, lp, flags | SEARCH_DROPIN); |
142468d8 | 1574 | if (r < 0) |
e75a26d0 | 1575 | return log_debug_errno(r, "Failed to load conf file \"%s\": %m", *p); |
142468d8 JL |
1576 | } |
1577 | ||
1578 | return result; | |
83096483 LP |
1579 | } |
1580 | ||
0ec0deaa | 1581 | static int install_info_follow( |
4a84db4c ZJS |
1582 | InstallContext *ctx, |
1583 | UnitFileInstallInfo *info, | |
c3e7fba0 | 1584 | const LookupPaths *lp, |
9f6cbcf5 LP |
1585 | SearchFlags flags, |
1586 | bool ignore_different_name) { | |
0ec0deaa | 1587 | |
4a84db4c ZJS |
1588 | assert(ctx); |
1589 | assert(info); | |
0ec0deaa | 1590 | |
48ed75ad | 1591 | if (!IN_SET(info->type, UNIT_FILE_TYPE_ALIAS, UNIT_FILE_TYPE_LINKED)) |
0ec0deaa | 1592 | return -EINVAL; |
4a84db4c | 1593 | if (!info->symlink_target) |
0ec0deaa LP |
1594 | return -EINVAL; |
1595 | ||
4f5c2485 | 1596 | /* If the basename doesn't match, the caller should add a complete new entry for this. */ |
0ec0deaa | 1597 | |
4a84db4c | 1598 | if (!ignore_different_name && !streq(basename(info->symlink_target), info->name)) |
0ec0deaa LP |
1599 | return -EXDEV; |
1600 | ||
4a84db4c ZJS |
1601 | free_and_replace(info->path, info->symlink_target); |
1602 | info->type = _UNIT_FILE_TYPE_INVALID; | |
0ec0deaa | 1603 | |
4a84db4c | 1604 | return unit_file_load_or_readlink(ctx, info, info->path, lp, flags); |
0ec0deaa LP |
1605 | } |
1606 | ||
64f9280e | 1607 | /** |
ff56349d ZJS |
1608 | * Search for the unit file. If the unit name is a symlink, follow the symlink to the |
1609 | * target, maybe more than once. Propagate the instance name if present. | |
64f9280e | 1610 | */ |
0ec0deaa | 1611 | static int install_info_traverse( |
4a84db4c | 1612 | InstallContext *ctx, |
c3e7fba0 | 1613 | const LookupPaths *lp, |
0ec0deaa LP |
1614 | UnitFileInstallInfo *start, |
1615 | SearchFlags flags, | |
1616 | UnitFileInstallInfo **ret) { | |
83096483 | 1617 | |
cab6235f | 1618 | UnitFileInstallInfo *i; |
0ec0deaa | 1619 | unsigned k = 0; |
83096483 LP |
1620 | int r; |
1621 | ||
c3e7fba0 | 1622 | assert(lp); |
0ec0deaa | 1623 | assert(start); |
4a84db4c | 1624 | assert(ctx); |
83096483 | 1625 | |
4a84db4c | 1626 | r = unit_file_search(ctx, start, lp, flags); |
83096483 LP |
1627 | if (r < 0) |
1628 | return r; | |
1629 | ||
0ec0deaa | 1630 | i = start; |
48ed75ad | 1631 | while (IN_SET(i->type, UNIT_FILE_TYPE_ALIAS, UNIT_FILE_TYPE_LINKED)) { |
0ec0deaa | 1632 | /* Follow the symlink */ |
83096483 | 1633 | |
0ec0deaa LP |
1634 | if (++k > UNIT_FILE_FOLLOW_SYMLINK_MAX) |
1635 | return -ELOOP; | |
83096483 | 1636 | |
e1c5c2b0 | 1637 | if (!(flags & SEARCH_FOLLOW_CONFIG_SYMLINKS)) { |
c3e7fba0 | 1638 | r = path_is_config(lp, i->path, true); |
e1c5c2b0 LP |
1639 | if (r < 0) |
1640 | return r; | |
1641 | if (r > 0) | |
1642 | return -ELOOP; | |
1643 | } | |
83096483 | 1644 | |
48eadb9d ZJS |
1645 | r = install_info_follow(ctx, i, lp, flags, |
1646 | /* If linked, don't look at the target name */ | |
1647 | /* ignore_different_name= */ i->type == UNIT_FILE_TYPE_LINKED); | |
0155928c | 1648 | if (r == -EXDEV) { |
0ec0deaa LP |
1649 | _cleanup_free_ char *buffer = NULL; |
1650 | const char *bn; | |
83096483 | 1651 | |
4f5c2485 | 1652 | /* Target is an alias, create a new install info object and continue with that. */ |
83096483 | 1653 | |
0ec0deaa | 1654 | bn = basename(i->symlink_target); |
83096483 | 1655 | |
0ec0deaa LP |
1656 | if (unit_name_is_valid(i->name, UNIT_NAME_INSTANCE) && |
1657 | unit_name_is_valid(bn, UNIT_NAME_TEMPLATE)) { | |
83096483 | 1658 | |
0ec0deaa LP |
1659 | _cleanup_free_ char *instance = NULL; |
1660 | ||
1661 | r = unit_name_to_instance(i->name, &instance); | |
1662 | if (r < 0) | |
1663 | return r; | |
1664 | ||
1665 | r = unit_name_replace_instance(bn, instance, &buffer); | |
1666 | if (r < 0) | |
1667 | return r; | |
1668 | ||
9f6cbcf5 LP |
1669 | if (streq(buffer, i->name)) { |
1670 | ||
4f5c2485 ZJS |
1671 | /* We filled in the instance, and the target stayed the same? If so, |
1672 | * then let's honour the link as it is. */ | |
9f6cbcf5 | 1673 | |
4a84db4c | 1674 | r = install_info_follow(ctx, i, lp, flags, true); |
9f6cbcf5 LP |
1675 | if (r < 0) |
1676 | return r; | |
1677 | ||
1678 | continue; | |
1679 | } | |
1680 | ||
0ec0deaa LP |
1681 | bn = buffer; |
1682 | } | |
1683 | ||
4a84db4c | 1684 | r = install_info_add(ctx, bn, NULL, lp->root_dir, /* auxiliary= */ false, &i); |
0ec0deaa LP |
1685 | if (r < 0) |
1686 | return r; | |
1687 | ||
0155928c | 1688 | /* Try again, with the new target we found. */ |
4a84db4c | 1689 | r = unit_file_search(ctx, i, lp, flags); |
893275df ZJS |
1690 | if (r == -ENOENT) |
1691 | /* Translate error code to highlight this specific case */ | |
1692 | return -ENOLINK; | |
0ec0deaa LP |
1693 | } |
1694 | ||
0155928c ZJS |
1695 | if (r < 0) |
1696 | return r; | |
83096483 LP |
1697 | } |
1698 | ||
0ec0deaa LP |
1699 | if (ret) |
1700 | *ret = i; | |
83096483 | 1701 | |
0ec0deaa LP |
1702 | return 0; |
1703 | } | |
83096483 | 1704 | |
ff56349d ZJS |
1705 | /** |
1706 | * Call install_info_add() with name_or_path as the path (if name_or_path starts with "/") | |
1707 | * or the name (otherwise). root_dir is prepended to the path. | |
1708 | */ | |
401017e0 | 1709 | static int install_info_add_auto( |
4a84db4c | 1710 | InstallContext *ctx, |
c3e7fba0 | 1711 | const LookupPaths *lp, |
401017e0 LP |
1712 | const char *name_or_path, |
1713 | UnitFileInstallInfo **ret) { | |
1714 | ||
4a84db4c | 1715 | assert(ctx); |
401017e0 LP |
1716 | assert(name_or_path); |
1717 | ||
1718 | if (path_is_absolute(name_or_path)) { | |
1719 | const char *pp; | |
1720 | ||
c3e7fba0 | 1721 | pp = prefix_roota(lp->root_dir, name_or_path); |
401017e0 | 1722 | |
4a84db4c | 1723 | return install_info_add(ctx, NULL, pp, lp->root_dir, /* auxiliary= */ false, ret); |
401017e0 | 1724 | } else |
4a84db4c | 1725 | return install_info_add(ctx, name_or_path, NULL, lp->root_dir, /* auxiliary= */ false, ret); |
401017e0 LP |
1726 | } |
1727 | ||
0ec0deaa | 1728 | static int install_info_discover( |
4a84db4c | 1729 | InstallContext *ctx, |
c3e7fba0 | 1730 | const LookupPaths *lp, |
0f87041f | 1731 | const char *name_or_path, |
0ec0deaa | 1732 | SearchFlags flags, |
59108fbe ZJS |
1733 | UnitFileInstallInfo **ret, |
1734 | UnitFileChange **changes, | |
da6053d0 | 1735 | size_t *n_changes) { |
83096483 | 1736 | |
4a84db4c | 1737 | UnitFileInstallInfo *info; |
0ec0deaa | 1738 | int r; |
83096483 | 1739 | |
4a84db4c | 1740 | assert(ctx); |
c3e7fba0 | 1741 | assert(lp); |
0f87041f | 1742 | assert(name_or_path); |
0ec0deaa | 1743 | |
0f87041f | 1744 | r = install_info_add_auto(ctx, lp, name_or_path, &info); |
59108fbe | 1745 | if (r >= 0) |
4a84db4c | 1746 | r = install_info_traverse(ctx, lp, info, flags, ret); |
83096483 | 1747 | |
59108fbe | 1748 | if (r < 0) |
0f87041f | 1749 | unit_file_changes_add(changes, n_changes, r, name_or_path, NULL); |
59108fbe | 1750 | return r; |
83096483 LP |
1751 | } |
1752 | ||
1e475a0a | 1753 | static int install_info_discover_and_check( |
4a84db4c ZJS |
1754 | InstallContext *ctx, |
1755 | const LookupPaths *lp, | |
0f87041f | 1756 | const char *name_or_path, |
4a84db4c ZJS |
1757 | SearchFlags flags, |
1758 | UnitFileInstallInfo **ret, | |
1759 | UnitFileChange **changes, | |
1760 | size_t *n_changes) { | |
1e475a0a RB |
1761 | |
1762 | int r; | |
1763 | ||
0f87041f | 1764 | r = install_info_discover(ctx, lp, name_or_path, flags, ret, changes, n_changes); |
1e475a0a RB |
1765 | if (r < 0) |
1766 | return r; | |
1767 | ||
c3e7fba0 | 1768 | return install_info_may_process(ret ? *ret : NULL, lp, changes, n_changes); |
1e475a0a RB |
1769 | } |
1770 | ||
cbfdbffb ZJS |
1771 | int unit_file_verify_alias( |
1772 | const UnitFileInstallInfo *info, | |
1773 | const char *dst, | |
1774 | char **ret_dst, | |
1775 | UnitFileChange **changes, | |
1776 | size_t *n_changes) { | |
1777 | ||
3f57bc22 | 1778 | _cleanup_free_ char *dst_updated = NULL; |
aa0f357f ZJS |
1779 | int r; |
1780 | ||
3f57bc22 ZJS |
1781 | /* Verify that dst is a valid either a valid alias or a valid .wants/.requires symlink for the target |
1782 | * unit *i. Return negative on error or if not compatible, zero on success. | |
1783 | * | |
1784 | * ret_dst is set in cases where "instance propagation" happens, i.e. when the instance part is | |
1785 | * inserted into dst. It is not normally set, even on success, so that the caller can easily | |
162392b7 | 1786 | * distinguish the case where instance propagation occurred. |
f663e646 ZJS |
1787 | * |
1788 | * Returns: | |
1789 | * -EXDEV when the alias doesn't match the unit, | |
1790 | * -EUCLEAN when the name is invalid, | |
1791 | * -ELOOP when the alias it to the unit itself. | |
3f57bc22 ZJS |
1792 | */ |
1793 | ||
1794 | const char *path_alias = strrchr(dst, '/'); | |
1795 | if (path_alias) { | |
1796 | /* This branch covers legacy Alias= function of creating .wants and .requires symlinks. */ | |
1797 | _cleanup_free_ char *dir = NULL; | |
1bf15585 | 1798 | char *p; |
aa0f357f | 1799 | |
3f57bc22 | 1800 | path_alias ++; /* skip over slash */ |
aa0f357f | 1801 | |
45519d13 LP |
1802 | r = path_extract_directory(dst, &dir); |
1803 | if (r < 0) | |
1804 | return log_error_errno(r, "Failed to extract parent directory from '%s': %m", dst); | |
aa0f357f | 1805 | |
1bf15585 ZJS |
1806 | p = endswith(dir, ".wants"); |
1807 | if (!p) | |
1808 | p = endswith(dir, ".requires"); | |
cbfdbffb ZJS |
1809 | if (!p) { |
1810 | unit_file_changes_add(changes, n_changes, -EXDEV, dst, NULL); | |
1811 | return log_debug_errno(SYNTHETIC_ERRNO(EXDEV), "Invalid path \"%s\" in alias.", dir); | |
1812 | } | |
1813 | ||
1bf15585 ZJS |
1814 | *p = '\0'; /* dir should now be a unit name */ |
1815 | ||
73ce91a0 | 1816 | UnitNameFlags type = unit_name_classify(dir); |
cbfdbffb ZJS |
1817 | if (type < 0) { |
1818 | unit_file_changes_add(changes, n_changes, -EXDEV, dst, NULL); | |
1819 | return log_debug_errno(SYNTHETIC_ERRNO(EXDEV), | |
1820 | "Invalid unit name component \"%s\" in alias.", dir); | |
1821 | } | |
1bf15585 | 1822 | |
73ce91a0 | 1823 | const bool instance_propagation = type == UNIT_NAME_TEMPLATE; |
3f57bc22 ZJS |
1824 | |
1825 | /* That's the name we want to use for verification. */ | |
4a84db4c | 1826 | r = unit_symlink_name_compatible(path_alias, info->name, instance_propagation); |
aa0f357f | 1827 | if (r < 0) |
3f57bc22 | 1828 | return log_error_errno(r, "Failed to verify alias validity: %m"); |
cbfdbffb ZJS |
1829 | if (r == 0) { |
1830 | unit_file_changes_add(changes, n_changes, -EXDEV, dst, info->name); | |
1831 | return log_debug_errno(SYNTHETIC_ERRNO(EXDEV), | |
1832 | "Invalid unit \"%s\" symlink \"%s\".", | |
1833 | info->name, dst); | |
1834 | } | |
3f57bc22 ZJS |
1835 | |
1836 | } else { | |
1837 | /* If the symlink target has an instance set and the symlink source doesn't, we "propagate | |
1838 | * the instance", i.e. instantiate the symlink source with the target instance. */ | |
1839 | if (unit_name_is_valid(dst, UNIT_NAME_TEMPLATE)) { | |
1840 | _cleanup_free_ char *inst = NULL; | |
1841 | ||
4a84db4c | 1842 | UnitNameFlags type = unit_name_to_instance(info->name, &inst); |
cbfdbffb ZJS |
1843 | if (type < 0) { |
1844 | unit_file_changes_add(changes, n_changes, -EUCLEAN, info->name, NULL); | |
1845 | return log_debug_errno(type, "Failed to extract instance name from \"%s\": %m", info->name); | |
1846 | } | |
3f57bc22 | 1847 | |
73ce91a0 | 1848 | if (type == UNIT_NAME_INSTANCE) { |
3f57bc22 ZJS |
1849 | r = unit_name_replace_instance(dst, inst, &dst_updated); |
1850 | if (r < 0) | |
1851 | return log_error_errno(r, "Failed to build unit name from %s+%s: %m", | |
1852 | dst, inst); | |
1853 | } | |
1854 | } | |
aa0f357f | 1855 | |
cbfdbffb | 1856 | r = unit_validate_alias_symlink_or_warn(LOG_DEBUG, dst_updated ?: dst, info->name); |
f663e646 ZJS |
1857 | if (r == -ELOOP) /* -ELOOP means self-alias, which we (quietly) ignore */ |
1858 | return r; | |
cbfdbffb ZJS |
1859 | if (r < 0) { |
1860 | unit_file_changes_add(changes, n_changes, | |
1861 | r == -EINVAL ? -EXDEV : r, | |
1862 | dst_updated ?: dst, | |
1863 | info->name); | |
aa0f357f | 1864 | return r; |
cbfdbffb | 1865 | } |
aa0f357f ZJS |
1866 | } |
1867 | ||
3f57bc22 | 1868 | *ret_dst = TAKE_PTR(dst_updated); |
aa0f357f ZJS |
1869 | return 0; |
1870 | } | |
1871 | ||
83096483 | 1872 | static int install_info_symlink_alias( |
b380b643 | 1873 | LookupScope scope, |
4a84db4c | 1874 | UnitFileInstallInfo *info, |
c3e7fba0 | 1875 | const LookupPaths *lp, |
83096483 LP |
1876 | const char *config_path, |
1877 | bool force, | |
1878 | UnitFileChange **changes, | |
da6053d0 | 1879 | size_t *n_changes) { |
83096483 | 1880 | |
83096483 LP |
1881 | int r = 0, q; |
1882 | ||
4a84db4c | 1883 | assert(info); |
c3e7fba0 | 1884 | assert(lp); |
83096483 LP |
1885 | assert(config_path); |
1886 | ||
4a84db4c | 1887 | STRV_FOREACH(s, info->aliases) { |
3f57bc22 | 1888 | _cleanup_free_ char *alias_path = NULL, *dst = NULL, *dst_updated = NULL; |
83096483 | 1889 | |
38e8a6c7 | 1890 | q = install_name_printf(scope, info, *s, &dst); |
6ec4c852 ZJS |
1891 | if (q < 0) { |
1892 | unit_file_changes_add(changes, n_changes, q, *s, NULL); | |
0d11db59 ZJS |
1893 | r = r < 0 ? r : q; |
1894 | continue; | |
6ec4c852 | 1895 | } |
83096483 | 1896 | |
cbfdbffb | 1897 | q = unit_file_verify_alias(info, dst, &dst_updated, changes, n_changes); |
f663e646 ZJS |
1898 | if (q == -ELOOP) |
1899 | continue; | |
0d11db59 ZJS |
1900 | if (q < 0) { |
1901 | r = r < 0 ? r : q; | |
aa0f357f | 1902 | continue; |
0d11db59 | 1903 | } |
3d0205f2 | 1904 | |
3f57bc22 | 1905 | alias_path = path_make_absolute(dst_updated ?: dst, config_path); |
83096483 LP |
1906 | if (!alias_path) |
1907 | return -ENOMEM; | |
1908 | ||
9aa3d6b4 | 1909 | q = create_symlink(lp, info->path, alias_path, force, changes, n_changes); |
0d11db59 | 1910 | r = r < 0 ? r : q; |
83096483 LP |
1911 | } |
1912 | ||
1913 | return r; | |
1914 | } | |
1915 | ||
1916 | static int install_info_symlink_wants( | |
b380b643 | 1917 | LookupScope scope, |
9b69770a | 1918 | UnitFileFlags file_flags, |
4a84db4c | 1919 | UnitFileInstallInfo *info, |
c3e7fba0 | 1920 | const LookupPaths *lp, |
83096483 | 1921 | const char *config_path, |
d54c4993 LP |
1922 | char **list, |
1923 | const char *suffix, | |
83096483 | 1924 | UnitFileChange **changes, |
da6053d0 | 1925 | size_t *n_changes) { |
83096483 | 1926 | |
d54c4993 | 1927 | _cleanup_free_ char *buf = NULL; |
b0ec372a | 1928 | UnitNameFlags valid_dst_type = UNIT_NAME_ANY; |
d54c4993 | 1929 | const char *n; |
83096483 LP |
1930 | int r = 0, q; |
1931 | ||
4a84db4c | 1932 | assert(info); |
c3e7fba0 | 1933 | assert(lp); |
83096483 LP |
1934 | assert(config_path); |
1935 | ||
047d91f9 ZJS |
1936 | if (strv_isempty(list)) |
1937 | return 0; | |
1938 | ||
4a84db4c | 1939 | if (unit_name_is_valid(info->name, UNIT_NAME_PLAIN | UNIT_NAME_INSTANCE)) |
b0ec372a | 1940 | /* Not a template unit. Use the name directly. */ |
4a84db4c | 1941 | n = info->name; |
b0ec372a | 1942 | |
4a84db4c | 1943 | else if (info->default_instance) { |
047d91f9 ZJS |
1944 | UnitFileInstallInfo instance = { |
1945 | .type = _UNIT_FILE_TYPE_INVALID, | |
1946 | }; | |
1947 | _cleanup_free_ char *path = NULL; | |
0a327d75 | 1948 | |
b0ec372a | 1949 | /* If this is a template, and we have a default instance, use it. */ |
e4086ae0 | 1950 | |
4a84db4c | 1951 | r = unit_name_replace_instance(info->name, info->default_instance, &buf); |
7410616c LP |
1952 | if (r < 0) |
1953 | return r; | |
83096483 | 1954 | |
047d91f9 | 1955 | instance.name = buf; |
c3e7fba0 | 1956 | r = unit_file_search(NULL, &instance, lp, SEARCH_FOLLOW_CONFIG_SYMLINKS); |
047d91f9 ZJS |
1957 | if (r < 0) |
1958 | return r; | |
1959 | ||
ae2a15bc | 1960 | path = TAKE_PTR(instance.path); |
047d91f9 ZJS |
1961 | |
1962 | if (instance.type == UNIT_FILE_TYPE_MASKED) { | |
1963 | unit_file_changes_add(changes, n_changes, -ERFKILL, path, NULL); | |
1964 | return -ERFKILL; | |
1965 | } | |
1966 | ||
d54c4993 | 1967 | n = buf; |
b0ec372a ZJS |
1968 | |
1969 | } else { | |
1970 | /* We have a template, but no instance yet. When used with an instantiated unit, we will get | |
1971 | * the instance from that unit. Cannot be used with non-instance units. */ | |
1972 | ||
1973 | valid_dst_type = UNIT_NAME_INSTANCE | UNIT_NAME_TEMPLATE; | |
4a84db4c | 1974 | n = info->name; |
b0ec372a | 1975 | } |
78d54bd4 | 1976 | |
d54c4993 | 1977 | STRV_FOREACH(s, list) { |
9aa3d6b4 | 1978 | _cleanup_free_ char *path = NULL, *dst = NULL; |
78d54bd4 | 1979 | |
38e8a6c7 | 1980 | q = install_name_printf(scope, info, *s, &dst); |
6ec4c852 ZJS |
1981 | if (q < 0) { |
1982 | unit_file_changes_add(changes, n_changes, q, *s, NULL); | |
19f6d710 | 1983 | return q; |
6ec4c852 | 1984 | } |
7584d236 | 1985 | |
b0ec372a | 1986 | if (!unit_name_is_valid(dst, valid_dst_type)) { |
ad5fdd39 ZJS |
1987 | /* Generate a proper error here: EUCLEAN if the name is generally bad, EIDRM if the |
1988 | * template status doesn't match. If we are doing presets don't bother reporting the | |
1989 | * error. This also covers cases like 'systemctl preset serial-getty@.service', which | |
1990 | * has no DefaultInstance, so there is nothing we can do. At the same time, | |
1991 | * 'systemctl enable serial-getty@.service' should fail, the user should specify an | |
1992 | * instance like in 'systemctl enable serial-getty@ttyS0.service'. | |
1993 | */ | |
1994 | if (file_flags & UNIT_FILE_IGNORE_AUXILIARY_FAILURE) | |
1995 | continue; | |
1996 | ||
b0ec372a ZJS |
1997 | if (unit_name_is_valid(dst, UNIT_NAME_ANY)) { |
1998 | unit_file_changes_add(changes, n_changes, -EIDRM, dst, n); | |
1999 | r = -EIDRM; | |
2000 | } else { | |
2001 | unit_file_changes_add(changes, n_changes, -EUCLEAN, dst, NULL); | |
2002 | r = -EUCLEAN; | |
2003 | } | |
2004 | ||
78d54bd4 LP |
2005 | continue; |
2006 | } | |
2007 | ||
9aa3d6b4 | 2008 | path = strjoin(config_path, "/", dst, suffix, n); |
d54c4993 | 2009 | if (!path) |
78d54bd4 LP |
2010 | return -ENOMEM; |
2011 | ||
9aa3d6b4 | 2012 | q = create_symlink(lp, info->path, path, true, changes, n_changes); |
78d54bd4 LP |
2013 | if (r == 0) |
2014 | r = q; | |
8ae27441 | 2015 | |
c3e7fba0 | 2016 | if (unit_file_exists(scope, lp, dst) == 0) |
4a84db4c | 2017 | unit_file_changes_add(changes, n_changes, UNIT_FILE_DESTINATION_NOT_PRESENT, dst, info->path); |
78d54bd4 LP |
2018 | } |
2019 | ||
2020 | return r; | |
2021 | } | |
2022 | ||
83096483 | 2023 | static int install_info_symlink_link( |
4a84db4c | 2024 | UnitFileInstallInfo *info, |
c3e7fba0 | 2025 | const LookupPaths *lp, |
83096483 LP |
2026 | const char *config_path, |
2027 | bool force, | |
2028 | UnitFileChange **changes, | |
da6053d0 | 2029 | size_t *n_changes) { |
83096483 | 2030 | |
7fd1b19b | 2031 | _cleanup_free_ char *path = NULL; |
1dacfd2a | 2032 | int r; |
83096483 | 2033 | |
4a84db4c | 2034 | assert(info); |
c3e7fba0 | 2035 | assert(lp); |
83096483 | 2036 | assert(config_path); |
4a84db4c | 2037 | assert(info->path); |
83096483 | 2038 | |
4a84db4c | 2039 | r = in_search_path(lp, info->path); |
fe4aede9 | 2040 | if (r < 0) |
83096483 | 2041 | return r; |
fe4aede9 ZJS |
2042 | if (r > 0) |
2043 | return 0; | |
83096483 | 2044 | |
4a84db4c | 2045 | path = path_join(config_path, info->name); |
1dacfd2a | 2046 | if (!path) |
83096483 LP |
2047 | return -ENOMEM; |
2048 | ||
4a84db4c | 2049 | return create_symlink(lp, info->path, path, force, changes, n_changes); |
83096483 LP |
2050 | } |
2051 | ||
2052 | static int install_info_apply( | |
b380b643 | 2053 | LookupScope scope, |
9b69770a | 2054 | UnitFileFlags file_flags, |
4a84db4c | 2055 | UnitFileInstallInfo *info, |
c3e7fba0 | 2056 | const LookupPaths *lp, |
83096483 | 2057 | const char *config_path, |
83096483 | 2058 | UnitFileChange **changes, |
da6053d0 | 2059 | size_t *n_changes) { |
83096483 LP |
2060 | |
2061 | int r, q; | |
2062 | ||
4a84db4c | 2063 | assert(info); |
c3e7fba0 | 2064 | assert(lp); |
83096483 LP |
2065 | assert(config_path); |
2066 | ||
4a84db4c | 2067 | if (info->type != UNIT_FILE_TYPE_REGULAR) |
0ec0deaa LP |
2068 | return 0; |
2069 | ||
9b69770a ZJS |
2070 | bool force = file_flags & UNIT_FILE_FORCE; |
2071 | ||
20d68b3a ZJS |
2072 | r = install_info_symlink_link(info, lp, config_path, force, changes, n_changes); |
2073 | /* Do not count links to the unit file towards the "carries_install_info" count */ | |
2074 | if (r < 0) | |
2075 | /* If linking of the file failed, do not try to create other symlinks, | |
2076 | * because they might would pointing to a non-existent or wrong unit. */ | |
2077 | return r; | |
2078 | ||
4a84db4c | 2079 | r = install_info_symlink_alias(scope, info, lp, config_path, force, changes, n_changes); |
83096483 | 2080 | |
4a84db4c | 2081 | q = install_info_symlink_wants(scope, file_flags, info, lp, config_path, info->wanted_by, ".wants/", changes, n_changes); |
83096483 LP |
2082 | if (r == 0) |
2083 | r = q; | |
2084 | ||
4a84db4c | 2085 | q = install_info_symlink_wants(scope, file_flags, info, lp, config_path, info->required_by, ".requires/", changes, n_changes); |
78d54bd4 LP |
2086 | if (r == 0) |
2087 | r = q; | |
2088 | ||
83096483 LP |
2089 | return r; |
2090 | } | |
2091 | ||
2092 | static int install_context_apply( | |
4a84db4c | 2093 | InstallContext *ctx, |
c3e7fba0 | 2094 | const LookupPaths *lp, |
4a84db4c | 2095 | UnitFileFlags file_flags, |
83096483 | 2096 | const char *config_path, |
0ec0deaa | 2097 | SearchFlags flags, |
83096483 | 2098 | UnitFileChange **changes, |
da6053d0 | 2099 | size_t *n_changes) { |
83096483 | 2100 | |
cab6235f | 2101 | UnitFileInstallInfo *i; |
0ec0deaa | 2102 | int r; |
83096483 | 2103 | |
4a84db4c | 2104 | assert(ctx); |
c3e7fba0 | 2105 | assert(lp); |
83096483 LP |
2106 | assert(config_path); |
2107 | ||
4a84db4c | 2108 | if (ordered_hashmap_isempty(ctx->will_process)) |
d25e100b | 2109 | return 0; |
83096483 | 2110 | |
4a84db4c | 2111 | r = ordered_hashmap_ensure_allocated(&ctx->have_processed, &string_hash_ops); |
d25e100b LP |
2112 | if (r < 0) |
2113 | return r; | |
83096483 | 2114 | |
2d5c93c7 | 2115 | r = 0; |
4a84db4c | 2116 | while ((i = ordered_hashmap_first(ctx->will_process))) { |
0ec0deaa | 2117 | int q; |
83096483 | 2118 | |
4a84db4c | 2119 | q = ordered_hashmap_move_one(ctx->have_processed, ctx->will_process, i->name); |
0ec0deaa LP |
2120 | if (q < 0) |
2121 | return q; | |
83096483 | 2122 | |
4a84db4c | 2123 | q = install_info_traverse(ctx, lp, i, flags, NULL); |
459500a3 | 2124 | if (q < 0) { |
3aa96361 ZJS |
2125 | if (i->auxiliary) { |
2126 | q = unit_file_changes_add(changes, n_changes, UNIT_FILE_AUXILIARY_FAILED, NULL, i->name); | |
2127 | if (q < 0) | |
2128 | return q; | |
2129 | continue; | |
2130 | } | |
2131 | ||
56a4ce24 | 2132 | unit_file_changes_add(changes, n_changes, q, i->name, NULL); |
459500a3 | 2133 | return q; |
db093eed | 2134 | } |
0ec0deaa | 2135 | |
f1651715 | 2136 | /* We can attempt to process a masked unit when a different unit |
047d91f9 | 2137 | * that we were processing specifies it in Also=. */ |
f1651715 ZJS |
2138 | if (i->type == UNIT_FILE_TYPE_MASKED) { |
2139 | unit_file_changes_add(changes, n_changes, UNIT_FILE_IS_MASKED, i->path, NULL); | |
2140 | if (r >= 0) | |
047d91f9 ZJS |
2141 | /* Assume that something *could* have been enabled here, |
2142 | * avoid "empty [Install] section" warning. */ | |
f1651715 ZJS |
2143 | r += 1; |
2144 | continue; | |
2145 | } | |
2146 | ||
0ec0deaa LP |
2147 | if (i->type != UNIT_FILE_TYPE_REGULAR) |
2148 | continue; | |
83096483 | 2149 | |
4a84db4c | 2150 | q = install_info_apply(ctx->scope, file_flags, i, lp, config_path, changes, n_changes); |
0ec0deaa LP |
2151 | if (r >= 0) { |
2152 | if (q < 0) | |
2153 | r = q; | |
2154 | else | |
596fc263 | 2155 | r += q; |
0ec0deaa | 2156 | } |
83096483 LP |
2157 | } |
2158 | ||
2159 | return r; | |
2160 | } | |
2161 | ||
2162 | static int install_context_mark_for_removal( | |
4a84db4c | 2163 | InstallContext *ctx, |
c3e7fba0 | 2164 | const LookupPaths *lp, |
83096483 | 2165 | Set **remove_symlinks_to, |
1830ac51 | 2166 | const char *config_path, |
637d6e5b | 2167 | UnitFileChange **changes, |
da6053d0 | 2168 | size_t *n_changes) { |
83096483 | 2169 | |
cab6235f | 2170 | UnitFileInstallInfo *i; |
0ec0deaa | 2171 | int r; |
83096483 | 2172 | |
4a84db4c | 2173 | assert(ctx); |
c3e7fba0 | 2174 | assert(lp); |
1830ac51 | 2175 | assert(config_path); |
83096483 LP |
2176 | |
2177 | /* Marks all items for removal */ | |
2178 | ||
4a84db4c | 2179 | if (ordered_hashmap_isempty(ctx->will_process)) |
d25e100b | 2180 | return 0; |
83096483 | 2181 | |
4a84db4c | 2182 | r = ordered_hashmap_ensure_allocated(&ctx->have_processed, &string_hash_ops); |
d25e100b LP |
2183 | if (r < 0) |
2184 | return r; | |
83096483 | 2185 | |
4a84db4c | 2186 | while ((i = ordered_hashmap_first(ctx->will_process))) { |
83096483 | 2187 | |
4a84db4c | 2188 | r = ordered_hashmap_move_one(ctx->have_processed, ctx->will_process, i->name); |
0ec0deaa | 2189 | if (r < 0) |
83096483 | 2190 | return r; |
29283ea4 | 2191 | |
4a84db4c | 2192 | r = install_info_traverse(ctx, lp, i, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, NULL); |
19539807 | 2193 | if (r == -ENOLINK) { |
637d6e5b LP |
2194 | log_debug_errno(r, "Name %s leads to a dangling symlink, removing name.", i->name); |
2195 | unit_file_changes_add(changes, n_changes, UNIT_FILE_IS_DANGLING, i->path ?: i->name, NULL); | |
2196 | } else if (r == -ENOENT) { | |
2197 | ||
2198 | if (i->auxiliary) /* some unit specified in Also= or similar is missing */ | |
2199 | log_debug_errno(r, "Auxiliary unit of %s not found, removing name.", i->name); | |
2200 | else { | |
2201 | log_debug_errno(r, "Unit %s not found, removing name.", i->name); | |
2202 | unit_file_changes_add(changes, n_changes, r, i->path ?: i->name, NULL); | |
2203 | } | |
0ec0deaa | 2204 | |
637d6e5b LP |
2205 | } else if (r < 0) { |
2206 | log_debug_errno(r, "Failed to find unit %s, removing name: %m", i->name); | |
2207 | unit_file_changes_add(changes, n_changes, r, i->path ?: i->name, NULL); | |
2208 | } else if (i->type == UNIT_FILE_TYPE_MASKED) { | |
2209 | log_debug("Unit file %s is masked, ignoring.", i->name); | |
2210 | unit_file_changes_add(changes, n_changes, UNIT_FILE_IS_MASKED, i->path ?: i->name, NULL); | |
2211 | continue; | |
2212 | } else if (i->type != UNIT_FILE_TYPE_REGULAR) { | |
2213 | log_debug("Unit %s has type %s, ignoring.", i->name, unit_file_type_to_string(i->type) ?: "invalid"); | |
0ec0deaa | 2214 | continue; |
64f9280e | 2215 | } |
0ec0deaa LP |
2216 | |
2217 | r = mark_symlink_for_removal(remove_symlinks_to, i->name); | |
2218 | if (r < 0) | |
2219 | return r; | |
2220 | } | |
2221 | ||
2222 | return 0; | |
2223 | } | |
2224 | ||
2225 | int unit_file_mask( | |
b380b643 | 2226 | LookupScope scope, |
b3796dd8 | 2227 | UnitFileFlags flags, |
0ec0deaa | 2228 | const char *root_dir, |
0f87041f | 2229 | char **names, |
0ec0deaa | 2230 | UnitFileChange **changes, |
da6053d0 | 2231 | size_t *n_changes) { |
0ec0deaa | 2232 | |
c3e7fba0 | 2233 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
e1c5c2b0 | 2234 | const char *config_path; |
0ec0deaa LP |
2235 | int r; |
2236 | ||
2237 | assert(scope >= 0); | |
b380b643 | 2238 | assert(scope < _LOOKUP_SCOPE_MAX); |
0ec0deaa | 2239 | |
c3e7fba0 | 2240 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
0ec0deaa LP |
2241 | if (r < 0) |
2242 | return r; | |
2243 | ||
c3e7fba0 | 2244 | config_path = (flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
d0fd66a3 LP |
2245 | if (!config_path) |
2246 | return -ENXIO; | |
e1c5c2b0 | 2247 | |
0f87041f | 2248 | STRV_FOREACH(name, names) { |
0ec0deaa LP |
2249 | _cleanup_free_ char *path = NULL; |
2250 | int q; | |
2251 | ||
0f87041f | 2252 | if (!unit_name_is_valid(*name, UNIT_NAME_ANY)) { |
0ec0deaa LP |
2253 | if (r == 0) |
2254 | r = -EINVAL; | |
2255 | continue; | |
2256 | } | |
2257 | ||
0f87041f | 2258 | path = path_make_absolute(*name, config_path); |
0ec0deaa LP |
2259 | if (!path) |
2260 | return -ENOMEM; | |
29283ea4 | 2261 | |
d3e85c9c | 2262 | q = create_symlink(&lp, "/dev/null", path, flags & UNIT_FILE_FORCE, changes, n_changes); |
0ec0deaa | 2263 | if (q < 0 && r >= 0) |
83096483 LP |
2264 | r = q; |
2265 | } | |
2266 | ||
2267 | return r; | |
2268 | } | |
2269 | ||
0ec0deaa | 2270 | int unit_file_unmask( |
b380b643 | 2271 | LookupScope scope, |
b3796dd8 | 2272 | UnitFileFlags flags, |
0ec0deaa | 2273 | const char *root_dir, |
0f87041f | 2274 | char **names, |
0ec0deaa | 2275 | UnitFileChange **changes, |
da6053d0 | 2276 | size_t *n_changes) { |
0ec0deaa | 2277 | |
c3e7fba0 | 2278 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
0ec0deaa | 2279 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; |
dc7dd61d | 2280 | _cleanup_strv_free_ char **todo = NULL; |
e1c5c2b0 | 2281 | const char *config_path; |
319a4f4b | 2282 | size_t n_todo = 0; |
0ec0deaa LP |
2283 | int r, q; |
2284 | ||
2285 | assert(scope >= 0); | |
b380b643 | 2286 | assert(scope < _LOOKUP_SCOPE_MAX); |
0ec0deaa | 2287 | |
c3e7fba0 | 2288 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
0ec0deaa LP |
2289 | if (r < 0) |
2290 | return r; | |
2291 | ||
c3e7fba0 | 2292 | config_path = (flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
1830ac51 MB |
2293 | if (!config_path) |
2294 | return -ENXIO; | |
2295 | ||
d3e85c9c | 2296 | bool dry_run = flags & UNIT_FILE_DRY_RUN; |
1830ac51 | 2297 | |
0f87041f | 2298 | STRV_FOREACH(name, names) { |
1830ac51 MB |
2299 | _cleanup_free_ char *path = NULL; |
2300 | ||
0f87041f | 2301 | if (!unit_name_is_valid(*name, UNIT_NAME_ANY)) |
0ec0deaa LP |
2302 | return -EINVAL; |
2303 | ||
0f87041f | 2304 | path = path_make_absolute(*name, config_path); |
1830ac51 MB |
2305 | if (!path) |
2306 | return -ENOMEM; | |
0ec0deaa | 2307 | |
1830ac51 MB |
2308 | r = null_or_empty_path(path); |
2309 | if (r == -ENOENT) | |
2310 | continue; | |
2311 | if (r < 0) | |
2312 | return r; | |
2313 | if (r == 0) | |
2314 | continue; | |
0ec0deaa | 2315 | |
319a4f4b | 2316 | if (!GREEDY_REALLOC0(todo, n_todo + 2)) |
1830ac51 | 2317 | return -ENOMEM; |
d054eae6 | 2318 | |
0f87041f | 2319 | todo[n_todo] = strdup(*name); |
1830ac51 MB |
2320 | if (!todo[n_todo]) |
2321 | return -ENOMEM; | |
4910b350 | 2322 | |
1830ac51 | 2323 | n_todo++; |
0ec0deaa LP |
2324 | } |
2325 | ||
2326 | strv_uniq(todo); | |
2327 | ||
2328 | r = 0; | |
1830ac51 MB |
2329 | STRV_FOREACH(i, todo) { |
2330 | _cleanup_free_ char *path = NULL; | |
2331 | const char *rp; | |
0ec0deaa | 2332 | |
1830ac51 MB |
2333 | path = path_make_absolute(*i, config_path); |
2334 | if (!path) | |
2335 | return -ENOMEM; | |
4910b350 | 2336 | |
1830ac51 MB |
2337 | if (!dry_run && unlink(path) < 0) { |
2338 | if (errno != ENOENT) { | |
2339 | if (r >= 0) | |
2340 | r = -errno; | |
2341 | unit_file_changes_add(changes, n_changes, -errno, path, NULL); | |
af3d8113 | 2342 | } |
0ec0deaa | 2343 | |
1830ac51 | 2344 | continue; |
4910b350 | 2345 | } |
401017e0 | 2346 | |
1830ac51 MB |
2347 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, path, NULL); |
2348 | ||
c3e7fba0 | 2349 | rp = skip_root(lp.root_dir, path); |
1830ac51 MB |
2350 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: path); |
2351 | if (q < 0) | |
2352 | return q; | |
0ec0deaa LP |
2353 | } |
2354 | ||
c3e7fba0 | 2355 | q = remove_marked_symlinks(remove_symlinks_to, config_path, &lp, dry_run, changes, n_changes); |
1830ac51 MB |
2356 | if (r >= 0) |
2357 | r = q; | |
2358 | ||
0ec0deaa LP |
2359 | return r; |
2360 | } | |
2361 | ||
2362 | int unit_file_link( | |
b380b643 | 2363 | LookupScope scope, |
b3796dd8 | 2364 | UnitFileFlags flags, |
e94937df LN |
2365 | const char *root_dir, |
2366 | char **files, | |
e94937df | 2367 | UnitFileChange **changes, |
da6053d0 | 2368 | size_t *n_changes) { |
e94937df | 2369 | |
c3e7fba0 | 2370 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
8af35ba6 | 2371 | _cleanup_strv_free_ char **todo = NULL; |
e1c5c2b0 | 2372 | const char *config_path; |
319a4f4b | 2373 | size_t n_todo = 0; |
0ec0deaa | 2374 | int r, q; |
e94937df LN |
2375 | |
2376 | assert(scope >= 0); | |
b380b643 | 2377 | assert(scope < _LOOKUP_SCOPE_MAX); |
e94937df | 2378 | |
c3e7fba0 | 2379 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
e94937df LN |
2380 | if (r < 0) |
2381 | return r; | |
2382 | ||
c3e7fba0 | 2383 | config_path = (flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
d0fd66a3 LP |
2384 | if (!config_path) |
2385 | return -ENXIO; | |
e94937df | 2386 | |
0f87041f | 2387 | STRV_FOREACH(file, files) { |
0ec0deaa LP |
2388 | _cleanup_free_ char *full = NULL; |
2389 | struct stat st; | |
2390 | char *fn; | |
e94937df | 2391 | |
0f87041f | 2392 | if (!path_is_absolute(*file)) |
0ec0deaa | 2393 | return -EINVAL; |
e94937df | 2394 | |
0f87041f | 2395 | fn = basename(*file); |
0ec0deaa LP |
2396 | if (!unit_name_is_valid(fn, UNIT_NAME_ANY)) |
2397 | return -EINVAL; | |
2398 | ||
0f87041f | 2399 | full = path_join(lp.root_dir, *file); |
0ec0deaa LP |
2400 | if (!full) |
2401 | return -ENOMEM; | |
2402 | ||
2403 | if (lstat(full, &st) < 0) | |
2404 | return -errno; | |
3cc44114 LP |
2405 | r = stat_verify_regular(&st); |
2406 | if (r < 0) | |
2407 | return r; | |
0ec0deaa | 2408 | |
0f87041f | 2409 | q = in_search_path(&lp, *file); |
0ec0deaa LP |
2410 | if (q < 0) |
2411 | return q; | |
2412 | if (q > 0) | |
2413 | continue; | |
2414 | ||
319a4f4b | 2415 | if (!GREEDY_REALLOC0(todo, n_todo + 2)) |
0ec0deaa LP |
2416 | return -ENOMEM; |
2417 | ||
0f87041f | 2418 | todo[n_todo] = strdup(*file); |
8af35ba6 EV |
2419 | if (!todo[n_todo]) |
2420 | return -ENOMEM; | |
2421 | ||
2422 | n_todo++; | |
e94937df LN |
2423 | } |
2424 | ||
0ec0deaa | 2425 | strv_uniq(todo); |
e94937df | 2426 | |
0ec0deaa LP |
2427 | r = 0; |
2428 | STRV_FOREACH(i, todo) { | |
401017e0 | 2429 | _cleanup_free_ char *new_path = NULL; |
0ec0deaa | 2430 | |
401017e0 LP |
2431 | new_path = path_make_absolute(basename(*i), config_path); |
2432 | if (!new_path) | |
0ec0deaa LP |
2433 | return -ENOMEM; |
2434 | ||
d3e85c9c | 2435 | q = create_symlink(&lp, *i, new_path, flags & UNIT_FILE_FORCE, changes, n_changes); |
0ec0deaa LP |
2436 | if (q < 0 && r >= 0) |
2437 | r = q; | |
2d5c93c7 MS |
2438 | } |
2439 | ||
0ec0deaa LP |
2440 | return r; |
2441 | } | |
2442 | ||
c3e7fba0 | 2443 | static int path_shall_revert(const LookupPaths *lp, const char *path) { |
344ca755 LP |
2444 | int r; |
2445 | ||
c3e7fba0 | 2446 | assert(lp); |
344ca755 LP |
2447 | assert(path); |
2448 | ||
2449 | /* Checks whether the path is one where the drop-in directories shall be removed. */ | |
2450 | ||
c3e7fba0 | 2451 | r = path_is_config(lp, path, true); |
344ca755 LP |
2452 | if (r != 0) |
2453 | return r; | |
2454 | ||
c3e7fba0 | 2455 | r = path_is_control(lp, path); |
344ca755 LP |
2456 | if (r != 0) |
2457 | return r; | |
2458 | ||
c3e7fba0 | 2459 | return path_is_transient(lp, path); |
344ca755 LP |
2460 | } |
2461 | ||
2462 | int unit_file_revert( | |
b380b643 | 2463 | LookupScope scope, |
344ca755 | 2464 | const char *root_dir, |
0f87041f | 2465 | char **names, |
344ca755 | 2466 | UnitFileChange **changes, |
da6053d0 | 2467 | size_t *n_changes) { |
344ca755 LP |
2468 | |
2469 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
c3e7fba0 | 2470 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
344ca755 | 2471 | _cleanup_strv_free_ char **todo = NULL; |
319a4f4b | 2472 | size_t n_todo = 0; |
344ca755 LP |
2473 | int r, q; |
2474 | ||
2475 | /* Puts a unit file back into vendor state. This means: | |
2476 | * | |
0f87041f ZJS |
2477 | * a) we remove all drop-in snippets added by the user ("config"), add to transient units |
2478 | * ("transient"), and added via "systemctl set-property" ("control"), but not if the drop-in is | |
2479 | * generated ("generated"). | |
344ca755 | 2480 | * |
0f87041f ZJS |
2481 | * c) if there's a vendor unit file (i.e. one in /usr) we remove any configured overriding unit files |
2482 | * (i.e. in "config", but not in "transient" or "control" or even "generated"). | |
344ca755 | 2483 | * |
4f25723c | 2484 | * We remove all that in both the runtime and the persistent directories, if that applies. |
344ca755 LP |
2485 | */ |
2486 | ||
c3e7fba0 | 2487 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
344ca755 LP |
2488 | if (r < 0) |
2489 | return r; | |
2490 | ||
0f87041f | 2491 | STRV_FOREACH(name, names) { |
344ca755 | 2492 | bool has_vendor = false; |
344ca755 | 2493 | |
0f87041f | 2494 | if (!unit_name_is_valid(*name, UNIT_NAME_ANY)) |
344ca755 LP |
2495 | return -EINVAL; |
2496 | ||
c3e7fba0 | 2497 | STRV_FOREACH(p, lp.search_path) { |
344ca755 LP |
2498 | _cleanup_free_ char *path = NULL, *dropin = NULL; |
2499 | struct stat st; | |
2500 | ||
0f87041f | 2501 | path = path_make_absolute(*name, *p); |
344ca755 LP |
2502 | if (!path) |
2503 | return -ENOMEM; | |
2504 | ||
2505 | r = lstat(path, &st); | |
2506 | if (r < 0) { | |
2507 | if (errno != ENOENT) | |
2508 | return -errno; | |
2509 | } else if (S_ISREG(st.st_mode)) { | |
2510 | /* Check if there's a vendor version */ | |
c3e7fba0 | 2511 | r = path_is_vendor_or_generator(&lp, path); |
344ca755 LP |
2512 | if (r < 0) |
2513 | return r; | |
2514 | if (r > 0) | |
2515 | has_vendor = true; | |
2516 | } | |
2517 | ||
b910cc72 | 2518 | dropin = strjoin(path, ".d"); |
344ca755 LP |
2519 | if (!dropin) |
2520 | return -ENOMEM; | |
2521 | ||
2522 | r = lstat(dropin, &st); | |
2523 | if (r < 0) { | |
2524 | if (errno != ENOENT) | |
2525 | return -errno; | |
2526 | } else if (S_ISDIR(st.st_mode)) { | |
2527 | /* Remove the drop-ins */ | |
c3e7fba0 | 2528 | r = path_shall_revert(&lp, dropin); |
344ca755 LP |
2529 | if (r < 0) |
2530 | return r; | |
2531 | if (r > 0) { | |
319a4f4b | 2532 | if (!GREEDY_REALLOC0(todo, n_todo + 2)) |
344ca755 LP |
2533 | return -ENOMEM; |
2534 | ||
1cc6c93a | 2535 | todo[n_todo++] = TAKE_PTR(dropin); |
344ca755 LP |
2536 | } |
2537 | } | |
2538 | } | |
2539 | ||
2540 | if (!has_vendor) | |
2541 | continue; | |
2542 | ||
2543 | /* OK, there's a vendor version, hence drop all configuration versions */ | |
c3e7fba0 | 2544 | STRV_FOREACH(p, lp.search_path) { |
344ca755 LP |
2545 | _cleanup_free_ char *path = NULL; |
2546 | struct stat st; | |
2547 | ||
0f87041f | 2548 | path = path_make_absolute(*name, *p); |
344ca755 LP |
2549 | if (!path) |
2550 | return -ENOMEM; | |
2551 | ||
2552 | r = lstat(path, &st); | |
2553 | if (r < 0) { | |
2554 | if (errno != ENOENT) | |
2555 | return -errno; | |
2556 | } else if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) { | |
c3e7fba0 | 2557 | r = path_is_config(&lp, path, true); |
344ca755 LP |
2558 | if (r < 0) |
2559 | return r; | |
2560 | if (r > 0) { | |
319a4f4b | 2561 | if (!GREEDY_REALLOC0(todo, n_todo + 2)) |
344ca755 LP |
2562 | return -ENOMEM; |
2563 | ||
1cc6c93a | 2564 | todo[n_todo++] = TAKE_PTR(path); |
344ca755 LP |
2565 | } |
2566 | } | |
2567 | } | |
2568 | } | |
2569 | ||
2570 | strv_uniq(todo); | |
2571 | ||
2572 | r = 0; | |
2573 | STRV_FOREACH(i, todo) { | |
2574 | _cleanup_strv_free_ char **fs = NULL; | |
2575 | const char *rp; | |
344ca755 LP |
2576 | |
2577 | (void) get_files_in_directory(*i, &fs); | |
2578 | ||
2579 | q = rm_rf(*i, REMOVE_ROOT|REMOVE_PHYSICAL); | |
2580 | if (q < 0 && q != -ENOENT && r >= 0) { | |
2581 | r = q; | |
2582 | continue; | |
2583 | } | |
2584 | ||
2585 | STRV_FOREACH(j, fs) { | |
2586 | _cleanup_free_ char *t = NULL; | |
2587 | ||
657ee2d8 | 2588 | t = path_join(*i, *j); |
344ca755 LP |
2589 | if (!t) |
2590 | return -ENOMEM; | |
2591 | ||
2592 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, t, NULL); | |
2593 | } | |
2594 | ||
2595 | unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, *i, NULL); | |
2596 | ||
c3e7fba0 | 2597 | rp = skip_root(lp.root_dir, *i); |
344ca755 LP |
2598 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: *i); |
2599 | if (q < 0) | |
2600 | return q; | |
2601 | } | |
2602 | ||
c3e7fba0 | 2603 | q = remove_marked_symlinks(remove_symlinks_to, lp.runtime_config, &lp, false, changes, n_changes); |
344ca755 LP |
2604 | if (r >= 0) |
2605 | r = q; | |
2606 | ||
c3e7fba0 | 2607 | q = remove_marked_symlinks(remove_symlinks_to, lp.persistent_config, &lp, false, changes, n_changes); |
344ca755 LP |
2608 | if (r >= 0) |
2609 | r = q; | |
2610 | ||
2611 | return r; | |
2612 | } | |
2613 | ||
0ec0deaa | 2614 | int unit_file_add_dependency( |
b380b643 | 2615 | LookupScope scope, |
9b69770a | 2616 | UnitFileFlags file_flags, |
0ec0deaa | 2617 | const char *root_dir, |
0f87041f | 2618 | char **names, |
0ec0deaa LP |
2619 | const char *target, |
2620 | UnitDependency dep, | |
0ec0deaa | 2621 | UnitFileChange **changes, |
da6053d0 | 2622 | size_t *n_changes) { |
0ec0deaa | 2623 | |
c3e7fba0 | 2624 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
4a84db4c ZJS |
2625 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
2626 | UnitFileInstallInfo *info, *target_info; | |
e1c5c2b0 | 2627 | const char *config_path; |
0ec0deaa LP |
2628 | int r; |
2629 | ||
2630 | assert(scope >= 0); | |
b380b643 | 2631 | assert(scope < _LOOKUP_SCOPE_MAX); |
0ec0deaa LP |
2632 | assert(target); |
2633 | ||
2634 | if (!IN_SET(dep, UNIT_WANTS, UNIT_REQUIRES)) | |
2635 | return -EINVAL; | |
2636 | ||
2637 | if (!unit_name_is_valid(target, UNIT_NAME_ANY)) | |
2638 | return -EINVAL; | |
2639 | ||
c3e7fba0 | 2640 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
0ec0deaa LP |
2641 | if (r < 0) |
2642 | return r; | |
2643 | ||
c3e7fba0 | 2644 | config_path = (file_flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
d0fd66a3 LP |
2645 | if (!config_path) |
2646 | return -ENXIO; | |
0ec0deaa | 2647 | |
4a84db4c | 2648 | r = install_info_discover_and_check(&ctx, &lp, target, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
1e475a0a | 2649 | &target_info, changes, n_changes); |
76adb5b8 LP |
2650 | if (r < 0) |
2651 | return r; | |
0ec0deaa LP |
2652 | |
2653 | assert(target_info->type == UNIT_FILE_TYPE_REGULAR); | |
e94937df | 2654 | |
0f87041f | 2655 | STRV_FOREACH(name, names) { |
0ec0deaa LP |
2656 | char ***l; |
2657 | ||
0f87041f ZJS |
2658 | r = install_info_discover_and_check(&ctx, &lp, *name, |
2659 | SEARCH_FOLLOW_CONFIG_SYMLINKS, | |
4a84db4c | 2660 | &info, changes, n_changes); |
76adb5b8 LP |
2661 | if (r < 0) |
2662 | return r; | |
0ec0deaa | 2663 | |
4a84db4c | 2664 | assert(info->type == UNIT_FILE_TYPE_REGULAR); |
0ec0deaa LP |
2665 | |
2666 | /* We didn't actually load anything from the unit | |
2667 | * file, but instead just add in our new symlink to | |
2668 | * create. */ | |
e94937df LN |
2669 | |
2670 | if (dep == UNIT_WANTS) | |
4a84db4c | 2671 | l = &info->wanted_by; |
e94937df | 2672 | else |
4a84db4c | 2673 | l = &info->required_by; |
e94937df | 2674 | |
0ec0deaa | 2675 | strv_free(*l); |
bea1a013 | 2676 | *l = strv_new(target_info->name); |
0ec0deaa LP |
2677 | if (!*l) |
2678 | return -ENOMEM; | |
e94937df LN |
2679 | } |
2680 | ||
4a84db4c | 2681 | return install_context_apply(&ctx, &lp, file_flags, config_path, |
9b69770a | 2682 | SEARCH_FOLLOW_CONFIG_SYMLINKS, changes, n_changes); |
e94937df LN |
2683 | } |
2684 | ||
ec7eaff3 ZJS |
2685 | static int do_unit_file_enable( |
2686 | const LookupPaths *lp, | |
b380b643 | 2687 | LookupScope scope, |
ec7eaff3 ZJS |
2688 | UnitFileFlags flags, |
2689 | const char *config_path, | |
0f87041f | 2690 | char **names_or_paths, |
83096483 | 2691 | UnitFileChange **changes, |
da6053d0 | 2692 | size_t *n_changes) { |
83096483 | 2693 | |
4a84db4c | 2694 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
4a84db4c | 2695 | UnitFileInstallInfo *info; |
83096483 LP |
2696 | int r; |
2697 | ||
0f87041f ZJS |
2698 | STRV_FOREACH(name, names_or_paths) { |
2699 | r = install_info_discover_and_check(&ctx, lp, *name, | |
2700 | SEARCH_LOAD | SEARCH_FOLLOW_CONFIG_SYMLINKS, | |
4a84db4c | 2701 | &info, changes, n_changes); |
76adb5b8 LP |
2702 | if (r < 0) |
2703 | return r; | |
0ec0deaa | 2704 | |
4a84db4c | 2705 | assert(info->type == UNIT_FILE_TYPE_REGULAR); |
83096483 LP |
2706 | } |
2707 | ||
729e3769 | 2708 | /* This will return the number of symlink rules that were |
d25e100b | 2709 | supposed to be created, not the ones actually created. This |
0f87041f | 2710 | is useful to determine whether the passed units had any |
d25e100b | 2711 | installation data at all. */ |
b91a3b02 | 2712 | |
ec7eaff3 | 2713 | return install_context_apply(&ctx, lp, flags, config_path, |
4a84db4c | 2714 | SEARCH_LOAD, changes, n_changes); |
83096483 LP |
2715 | } |
2716 | ||
ec7eaff3 | 2717 | int unit_file_enable( |
b380b643 | 2718 | LookupScope scope, |
b3796dd8 | 2719 | UnitFileFlags flags, |
83096483 | 2720 | const char *root_dir, |
0f87041f | 2721 | char **names_or_paths, |
83096483 | 2722 | UnitFileChange **changes, |
da6053d0 | 2723 | size_t *n_changes) { |
83096483 | 2724 | |
c3e7fba0 | 2725 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
0ec0deaa | 2726 | int r; |
83096483 LP |
2727 | |
2728 | assert(scope >= 0); | |
b380b643 | 2729 | assert(scope < _LOOKUP_SCOPE_MAX); |
83096483 | 2730 | |
c3e7fba0 | 2731 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
83096483 LP |
2732 | if (r < 0) |
2733 | return r; | |
2734 | ||
ec7eaff3 | 2735 | const char *config_path = config_path_from_flags(&lp, flags); |
1830ac51 MB |
2736 | if (!config_path) |
2737 | return -ENXIO; | |
2738 | ||
0f87041f | 2739 | return do_unit_file_enable(&lp, scope, flags, config_path, names_or_paths, changes, n_changes); |
ec7eaff3 ZJS |
2740 | } |
2741 | ||
2742 | static int do_unit_file_disable( | |
2743 | const LookupPaths *lp, | |
b380b643 | 2744 | LookupScope scope, |
ec7eaff3 ZJS |
2745 | UnitFileFlags flags, |
2746 | const char *config_path, | |
0f87041f | 2747 | char **names, |
ec7eaff3 ZJS |
2748 | UnitFileChange **changes, |
2749 | size_t *n_changes) { | |
2750 | ||
2751 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; | |
2752 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
2753 | int r; | |
2754 | ||
0f87041f ZJS |
2755 | STRV_FOREACH(name, names) { |
2756 | if (!unit_name_is_valid(*name, UNIT_NAME_ANY)) | |
0ec0deaa LP |
2757 | return -EINVAL; |
2758 | ||
0f87041f | 2759 | r = install_info_add(&ctx, *name, NULL, lp->root_dir, /* auxiliary= */ false, NULL); |
83096483 | 2760 | if (r < 0) |
d9e5e694 | 2761 | return r; |
83096483 LP |
2762 | } |
2763 | ||
ec7eaff3 | 2764 | r = install_context_mark_for_removal(&ctx, lp, &remove_symlinks_to, config_path, changes, n_changes); |
0ec0deaa LP |
2765 | if (r < 0) |
2766 | return r; | |
83096483 | 2767 | |
ec7eaff3 | 2768 | return remove_marked_symlinks(remove_symlinks_to, config_path, lp, flags & UNIT_FILE_DRY_RUN, changes, n_changes); |
83096483 LP |
2769 | } |
2770 | ||
ec7eaff3 ZJS |
2771 | |
2772 | int unit_file_disable( | |
b380b643 | 2773 | LookupScope scope, |
b3796dd8 | 2774 | UnitFileFlags flags, |
83096483 | 2775 | const char *root_dir, |
7195aa42 | 2776 | char **files, |
83096483 | 2777 | UnitFileChange **changes, |
da6053d0 | 2778 | size_t *n_changes) { |
0ec0deaa | 2779 | |
ec7eaff3 | 2780 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
92d430a9 | 2781 | int r; |
ec7eaff3 ZJS |
2782 | |
2783 | assert(scope >= 0); | |
b380b643 | 2784 | assert(scope < _LOOKUP_SCOPE_MAX); |
ec7eaff3 ZJS |
2785 | |
2786 | r = lookup_paths_init(&lp, scope, 0, root_dir); | |
2787 | if (r < 0) | |
2788 | return r; | |
2789 | ||
2790 | const char *config_path = config_path_from_flags(&lp, flags); | |
2791 | if (!config_path) | |
2792 | return -ENXIO; | |
2793 | ||
2794 | return do_unit_file_disable(&lp, scope, flags, config_path, files, changes, n_changes); | |
2795 | } | |
2796 | ||
29a7c59a | 2797 | static int normalize_linked_files( |
b380b643 | 2798 | LookupScope scope, |
29a7c59a ZJS |
2799 | const LookupPaths *lp, |
2800 | char **names_or_paths, | |
2801 | char ***ret_names, | |
2802 | char ***ret_files) { | |
2803 | ||
2804 | /* This is similar to normalize_filenames()/normalize_names() in src/systemctl/, | |
2805 | * but operates on real unit names. For each argument we we look up the actual path | |
8b7378e1 | 2806 | * where the unit is found. This way linked units can be re-enabled successfully. */ |
29a7c59a | 2807 | |
0b6bf4b6 | 2808 | _cleanup_strv_free_ char **files = NULL, **names = NULL; |
29a7c59a ZJS |
2809 | int r; |
2810 | ||
2811 | STRV_FOREACH(a, names_or_paths) { | |
2812 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; | |
2813 | UnitFileInstallInfo *i = NULL; | |
2814 | _cleanup_free_ char *n = NULL; | |
2815 | ||
2816 | r = path_extract_filename(*a, &n); | |
2817 | if (r < 0) | |
2818 | return r; | |
2819 | if (r == O_DIRECTORY) | |
2820 | return log_debug_errno(SYNTHETIC_ERRNO(EISDIR), | |
2821 | "Unexpected path to a directory \"%s\", refusing.", *a); | |
2822 | ||
2823 | if (!is_path(*a)) { | |
2824 | r = install_info_discover(&ctx, lp, n, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, &i, NULL, NULL); | |
2825 | if (r < 0) | |
2826 | log_debug_errno(r, "Failed to discover unit \"%s\", operating on name: %m", n); | |
2827 | } | |
2828 | ||
2829 | r = strv_consume(&names, TAKE_PTR(n)); | |
2830 | if (r < 0) | |
2831 | return r; | |
2832 | ||
2833 | const char *p = NULL; | |
6e961aeb | 2834 | if (i && i->path && i->root) |
29a7c59a ZJS |
2835 | /* Use startswith here, because we know that paths are normalized, and |
2836 | * path_startswith() would give us a relative path, but we need an absolute path | |
2837 | * relative to i->root. | |
2838 | * | |
2839 | * In other words: /var/tmp/instroot.1234/etc/systemd/system/frobnicator.service | |
2840 | * is replaced by /etc/systemd/system/frobnicator.service, which is "absolute" | |
2841 | * in a sense, but only makes sense "relative" to /var/tmp/instroot.1234/. | |
2842 | */ | |
2843 | p = startswith(i->path, i->root); | |
2844 | ||
2845 | r = strv_extend(&files, p ?: *a); | |
2846 | if (r < 0) | |
2847 | return r; | |
2848 | } | |
2849 | ||
2850 | *ret_names = TAKE_PTR(names); | |
2851 | *ret_files = TAKE_PTR(files); | |
2852 | return 0; | |
2853 | } | |
2854 | ||
ec7eaff3 | 2855 | int unit_file_reenable( |
b380b643 | 2856 | LookupScope scope, |
ec7eaff3 ZJS |
2857 | UnitFileFlags flags, |
2858 | const char *root_dir, | |
29a7c59a | 2859 | char **names_or_paths, |
ec7eaff3 ZJS |
2860 | UnitFileChange **changes, |
2861 | size_t *n_changes) { | |
2862 | ||
2863 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; | |
29a7c59a | 2864 | _cleanup_strv_free_ char **names = NULL, **files = NULL; |
ec7eaff3 ZJS |
2865 | int r; |
2866 | ||
2867 | assert(scope >= 0); | |
b380b643 | 2868 | assert(scope < _LOOKUP_SCOPE_MAX); |
ec7eaff3 ZJS |
2869 | |
2870 | r = lookup_paths_init(&lp, scope, 0, root_dir); | |
2871 | if (r < 0) | |
2872 | return r; | |
2873 | ||
2874 | const char *config_path = config_path_from_flags(&lp, flags); | |
2875 | if (!config_path) | |
2876 | return -ENXIO; | |
83096483 | 2877 | |
29a7c59a ZJS |
2878 | r = normalize_linked_files(scope, &lp, names_or_paths, &names, &files); |
2879 | if (r < 0) | |
2880 | return r; | |
0ec0deaa | 2881 | |
29a7c59a | 2882 | /* First, we invoke the disable command with only the basename... */ |
ec7eaff3 | 2883 | r = do_unit_file_disable(&lp, scope, flags, config_path, names, changes, n_changes); |
83096483 | 2884 | if (r < 0) |
d9e5e694 | 2885 | return r; |
83096483 | 2886 | |
0ec0deaa | 2887 | /* But the enable command with the full name */ |
ec7eaff3 | 2888 | return do_unit_file_enable(&lp, scope, flags, config_path, files, changes, n_changes); |
83096483 LP |
2889 | } |
2890 | ||
99504dd4 | 2891 | int unit_file_set_default( |
b380b643 | 2892 | LookupScope scope, |
b3796dd8 | 2893 | UnitFileFlags flags, |
99504dd4 | 2894 | const char *root_dir, |
0ec0deaa | 2895 | const char *name, |
99504dd4 | 2896 | UnitFileChange **changes, |
da6053d0 | 2897 | size_t *n_changes) { |
99504dd4 | 2898 | |
c3e7fba0 | 2899 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
4a84db4c ZJS |
2900 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
2901 | UnitFileInstallInfo *info; | |
60bec8e4 | 2902 | const char *new_path; |
99504dd4 | 2903 | int r; |
99504dd4 VP |
2904 | |
2905 | assert(scope >= 0); | |
b380b643 | 2906 | assert(scope < _LOOKUP_SCOPE_MAX); |
0ec0deaa | 2907 | assert(name); |
99504dd4 | 2908 | |
401017e0 | 2909 | if (unit_name_to_type(name) != UNIT_TARGET) /* this also validates the name */ |
0ec0deaa LP |
2910 | return -EINVAL; |
2911 | if (streq(name, SPECIAL_DEFAULT_TARGET)) | |
99504dd4 VP |
2912 | return -EINVAL; |
2913 | ||
c3e7fba0 | 2914 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
99504dd4 VP |
2915 | if (r < 0) |
2916 | return r; | |
2917 | ||
4a84db4c | 2918 | r = install_info_discover_and_check(&ctx, &lp, name, 0, &info, changes, n_changes); |
76adb5b8 LP |
2919 | if (r < 0) |
2920 | return r; | |
99504dd4 | 2921 | |
c3e7fba0 | 2922 | new_path = strjoina(lp.persistent_config, "/" SPECIAL_DEFAULT_TARGET); |
9aa3d6b4 | 2923 | return create_symlink(&lp, info->path, new_path, flags & UNIT_FILE_FORCE, changes, n_changes); |
99504dd4 VP |
2924 | } |
2925 | ||
2926 | int unit_file_get_default( | |
b380b643 | 2927 | LookupScope scope, |
99504dd4 VP |
2928 | const char *root_dir, |
2929 | char **name) { | |
2930 | ||
c3e7fba0 | 2931 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
4a84db4c ZJS |
2932 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
2933 | UnitFileInstallInfo *info; | |
0ec0deaa | 2934 | char *n; |
99504dd4 VP |
2935 | int r; |
2936 | ||
16ed0233 | 2937 | assert(scope >= 0); |
b380b643 | 2938 | assert(scope < _LOOKUP_SCOPE_MAX); |
16ed0233 LP |
2939 | assert(name); |
2940 | ||
c3e7fba0 | 2941 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
0ec0deaa LP |
2942 | if (r < 0) |
2943 | return r; | |
99504dd4 | 2944 | |
4a84db4c ZJS |
2945 | r = install_info_discover(&ctx, &lp, SPECIAL_DEFAULT_TARGET, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2946 | &info, NULL, NULL); | |
0ec0deaa LP |
2947 | if (r < 0) |
2948 | return r; | |
4a84db4c | 2949 | r = install_info_may_process(info, &lp, NULL, 0); |
76adb5b8 LP |
2950 | if (r < 0) |
2951 | return r; | |
99504dd4 | 2952 | |
4a84db4c | 2953 | n = strdup(info->name); |
0ec0deaa LP |
2954 | if (!n) |
2955 | return -ENOMEM; | |
99504dd4 | 2956 | |
0ec0deaa LP |
2957 | *name = n; |
2958 | return 0; | |
99504dd4 VP |
2959 | } |
2960 | ||
d6d98276 | 2961 | int unit_file_lookup_state( |
b380b643 | 2962 | LookupScope scope, |
c3e7fba0 | 2963 | const LookupPaths *lp, |
0ec0deaa LP |
2964 | const char *name, |
2965 | UnitFileState *ret) { | |
83096483 | 2966 | |
4a84db4c ZJS |
2967 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
2968 | UnitFileInstallInfo *info; | |
0ec0deaa LP |
2969 | UnitFileState state; |
2970 | int r; | |
83096483 | 2971 | |
c3e7fba0 | 2972 | assert(lp); |
0ec0deaa | 2973 | assert(name); |
83096483 | 2974 | |
7410616c | 2975 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
83096483 LP |
2976 | return -EINVAL; |
2977 | ||
4a84db4c ZJS |
2978 | r = install_info_discover(&ctx, lp, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2979 | &info, NULL, NULL); | |
0ec0deaa | 2980 | if (r < 0) |
3e8d06d9 ZJS |
2981 | return log_debug_errno(r, "Failed to discover unit %s: %m", name); |
2982 | ||
4a84db4c ZJS |
2983 | assert(IN_SET(info->type, UNIT_FILE_TYPE_REGULAR, UNIT_FILE_TYPE_MASKED)); |
2984 | log_debug("Found unit %s at %s (%s)", name, strna(info->path), | |
2985 | info->type == UNIT_FILE_TYPE_REGULAR ? "regular file" : "mask"); | |
83096483 | 2986 | |
0ec0deaa LP |
2987 | /* Shortcut things, if the caller just wants to know if this unit exists. */ |
2988 | if (!ret) | |
2989 | return 0; | |
83096483 | 2990 | |
4a84db4c | 2991 | switch (info->type) { |
67820a0c | 2992 | |
0ec0deaa | 2993 | case UNIT_FILE_TYPE_MASKED: |
4a84db4c | 2994 | r = path_is_runtime(lp, info->path, true); |
385eb996 LP |
2995 | if (r < 0) |
2996 | return r; | |
2997 | ||
2998 | state = r > 0 ? UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED; | |
0ec0deaa | 2999 | break; |
83096483 | 3000 | |
0ec0deaa | 3001 | case UNIT_FILE_TYPE_REGULAR: |
15d7ab87 | 3002 | /* Check if the name we were querying is actually an alias */ |
4a84db4c | 3003 | if (!streq(name, basename(info->path)) && !unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { |
15d7ab87 ZJS |
3004 | state = UNIT_FILE_ALIAS; |
3005 | break; | |
3006 | } | |
3007 | ||
4a84db4c | 3008 | r = path_is_generator(lp, info->path); |
f4139308 LP |
3009 | if (r < 0) |
3010 | return r; | |
3011 | if (r > 0) { | |
3012 | state = UNIT_FILE_GENERATED; | |
3013 | break; | |
3014 | } | |
3015 | ||
4a84db4c | 3016 | r = path_is_transient(lp, info->path); |
e4fca67f LP |
3017 | if (r < 0) |
3018 | return r; | |
3019 | if (r > 0) { | |
3020 | state = UNIT_FILE_TRANSIENT; | |
3021 | break; | |
3022 | } | |
3023 | ||
5cd8ae31 ZJS |
3024 | /* Check if any of the Alias= symlinks have been created. |
3025 | * We ignore other aliases, and only check those that would | |
3026 | * be created by systemctl enable for this unit. */ | |
4a84db4c | 3027 | r = find_symlinks_in_scope(scope, lp, info, true, &state); |
d9b4b48f ZJS |
3028 | if (r < 0) |
3029 | return r; | |
3030 | if (r > 0) | |
3031 | break; | |
3032 | ||
3033 | /* Check if the file is known under other names. If it is, | |
3034 | * it might be in use. Report that as UNIT_FILE_INDIRECT. */ | |
4a84db4c | 3035 | r = find_symlinks_in_scope(scope, lp, info, false, &state); |
d9e5e694 ZJS |
3036 | if (r < 0) |
3037 | return r; | |
d9b4b48f ZJS |
3038 | if (r > 0) |
3039 | state = UNIT_FILE_INDIRECT; | |
3040 | else { | |
4a84db4c | 3041 | if (unit_file_install_info_has_rules(info)) |
0ec0deaa | 3042 | state = UNIT_FILE_DISABLED; |
4a84db4c | 3043 | else if (unit_file_install_info_has_also(info)) |
0ec0deaa LP |
3044 | state = UNIT_FILE_INDIRECT; |
3045 | else | |
3046 | state = UNIT_FILE_STATIC; | |
3047 | } | |
83096483 | 3048 | |
0ec0deaa LP |
3049 | break; |
3050 | ||
3051 | default: | |
04499a70 | 3052 | assert_not_reached(); |
83096483 LP |
3053 | } |
3054 | ||
0ec0deaa LP |
3055 | *ret = state; |
3056 | return 0; | |
83096483 LP |
3057 | } |
3058 | ||
0ec0deaa | 3059 | int unit_file_get_state( |
b380b643 | 3060 | LookupScope scope, |
a8ffe6fb | 3061 | const char *root_dir, |
0ec0deaa LP |
3062 | const char *name, |
3063 | UnitFileState *ret) { | |
a8ffe6fb | 3064 | |
c3e7fba0 | 3065 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
a8ffe6fb ZJS |
3066 | int r; |
3067 | ||
3068 | assert(scope >= 0); | |
b380b643 | 3069 | assert(scope < _LOOKUP_SCOPE_MAX); |
a8ffe6fb ZJS |
3070 | assert(name); |
3071 | ||
c3e7fba0 | 3072 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
a8ffe6fb ZJS |
3073 | if (r < 0) |
3074 | return r; | |
3075 | ||
c3e7fba0 | 3076 | return unit_file_lookup_state(scope, &lp, name, ret); |
a8ffe6fb ZJS |
3077 | } |
3078 | ||
b380b643 | 3079 | int unit_file_exists(LookupScope scope, const LookupPaths *lp, const char *name) { |
4a84db4c | 3080 | _cleanup_(install_context_done) InstallContext c = { .scope = scope }; |
e735decc LP |
3081 | int r; |
3082 | ||
c3e7fba0 | 3083 | assert(lp); |
e735decc LP |
3084 | assert(name); |
3085 | ||
3086 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) | |
3087 | return -EINVAL; | |
3088 | ||
4a84db4c | 3089 | r = install_info_discover(&c, lp, name, 0, NULL, NULL, NULL); |
e735decc LP |
3090 | if (r == -ENOENT) |
3091 | return 0; | |
3092 | if (r < 0) | |
3093 | return r; | |
3094 | ||
3095 | return 1; | |
3096 | } | |
3097 | ||
4c9565ee RB |
3098 | static int split_pattern_into_name_and_instances(const char *pattern, char **out_unit_name, char ***out_instances) { |
3099 | _cleanup_strv_free_ char **instances = NULL; | |
3100 | _cleanup_free_ char *unit_name = NULL; | |
3101 | int r; | |
3102 | ||
3103 | assert(pattern); | |
3104 | assert(out_instances); | |
3105 | assert(out_unit_name); | |
3106 | ||
82bd4da7 | 3107 | r = extract_first_word(&pattern, &unit_name, NULL, EXTRACT_RETAIN_ESCAPE); |
4c9565ee RB |
3108 | if (r < 0) |
3109 | return r; | |
3110 | ||
3111 | /* We handle the instances logic when unit name is extracted */ | |
3112 | if (pattern) { | |
3113 | /* We only create instances when a rule of templated unit | |
3114 | * is seen. A rule like enable foo@.service a b c will | |
3115 | * result in an array of (a, b, c) as instance names */ | |
3116 | if (!unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) | |
3117 | return -EINVAL; | |
3118 | ||
3119 | instances = strv_split(pattern, WHITESPACE); | |
3120 | if (!instances) | |
3121 | return -ENOMEM; | |
3122 | ||
3123 | *out_instances = TAKE_PTR(instances); | |
3124 | } | |
3125 | ||
3126 | *out_unit_name = TAKE_PTR(unit_name); | |
3127 | ||
3128 | return 0; | |
3129 | } | |
3130 | ||
b380b643 | 3131 | static int presets_find_config(LookupScope scope, const char *root_dir, char ***files) { |
10fd1d46 ZJS |
3132 | static const char* const system_dirs[] = {CONF_PATHS("systemd/system-preset"), NULL}; |
3133 | static const char* const user_dirs[] = {CONF_PATHS_USR("systemd/user-preset"), NULL}; | |
f7767d76 | 3134 | const char* const* dirs; |
83096483 LP |
3135 | |
3136 | assert(scope >= 0); | |
b380b643 | 3137 | assert(scope < _LOOKUP_SCOPE_MAX); |
0ec0deaa | 3138 | |
b380b643 | 3139 | if (scope == LOOKUP_SCOPE_SYSTEM) |
10fd1d46 | 3140 | dirs = system_dirs; |
b380b643 | 3141 | else if (IN_SET(scope, LOOKUP_SCOPE_GLOBAL, LOOKUP_SCOPE_USER)) |
10fd1d46 | 3142 | dirs = user_dirs; |
a05294ff | 3143 | else |
04499a70 | 3144 | assert_not_reached(); |
83096483 | 3145 | |
f7767d76 | 3146 | return conf_files_list_strv(files, ".preset", root_dir, 0, dirs); |
e0b8a238 ZJS |
3147 | } |
3148 | ||
b380b643 | 3149 | static int read_presets(LookupScope scope, const char *root_dir, UnitFilePresets *presets) { |
8f7b2566 | 3150 | _cleanup_(unit_file_presets_freep) UnitFilePresets ps = {}; |
e0b8a238 | 3151 | _cleanup_strv_free_ char **files = NULL; |
e0b8a238 ZJS |
3152 | int r; |
3153 | ||
3154 | assert(scope >= 0); | |
b380b643 | 3155 | assert(scope < _LOOKUP_SCOPE_MAX); |
e0b8a238 ZJS |
3156 | assert(presets); |
3157 | ||
3158 | r = presets_find_config(scope, root_dir, &files); | |
83096483 LP |
3159 | if (r < 0) |
3160 | return r; | |
3161 | ||
cba2ef02 | 3162 | STRV_FOREACH(p, files) { |
c2b2df60 | 3163 | _cleanup_fclose_ FILE *f = NULL; |
d544d1a4 | 3164 | int n = 0; |
83096483 | 3165 | |
cba2ef02 | 3166 | f = fopen(*p, "re"); |
83096483 LP |
3167 | if (!f) { |
3168 | if (errno == ENOENT) | |
3169 | continue; | |
3170 | ||
d9e5e694 | 3171 | return -errno; |
83096483 LP |
3172 | } |
3173 | ||
bef77f37 LP |
3174 | for (;;) { |
3175 | _cleanup_free_ char *line = NULL; | |
8f7b2566 | 3176 | UnitFilePresetRule rule = {}; |
0ec0deaa LP |
3177 | const char *parameter; |
3178 | char *l; | |
83096483 | 3179 | |
bef77f37 LP |
3180 | r = read_line(f, LONG_LINE_MAX, &line); |
3181 | if (r < 0) | |
3182 | return r; | |
3183 | if (r == 0) | |
3184 | break; | |
3185 | ||
83096483 | 3186 | l = strstrip(line); |
d544d1a4 | 3187 | n++; |
83096483 | 3188 | |
0ec0deaa LP |
3189 | if (isempty(l)) |
3190 | continue; | |
3191 | if (strchr(COMMENTS, *l)) | |
83096483 LP |
3192 | continue; |
3193 | ||
0ec0deaa LP |
3194 | parameter = first_word(l, "enable"); |
3195 | if (parameter) { | |
4c9565ee RB |
3196 | char *unit_name; |
3197 | char **instances = NULL; | |
d9e5e694 | 3198 | |
4c9565ee RB |
3199 | /* Unit_name will remain the same as parameter when no instances are specified */ |
3200 | r = split_pattern_into_name_and_instances(parameter, &unit_name, &instances); | |
3201 | if (r < 0) { | |
8ac3c9ab | 3202 | log_syntax(NULL, LOG_WARNING, *p, n, r, "Couldn't parse line '%s'. Ignoring.", line); |
4c9565ee RB |
3203 | continue; |
3204 | } | |
8965d9f8 | 3205 | |
8f7b2566 | 3206 | rule = (UnitFilePresetRule) { |
4c9565ee | 3207 | .pattern = unit_name, |
8965d9f8 | 3208 | .action = PRESET_ENABLE, |
4c9565ee | 3209 | .instances = instances, |
8965d9f8 | 3210 | }; |
0ec0deaa | 3211 | } |
83096483 | 3212 | |
0ec0deaa LP |
3213 | parameter = first_word(l, "disable"); |
3214 | if (parameter) { | |
8965d9f8 | 3215 | char *pattern; |
d9e5e694 | 3216 | |
8965d9f8 AC |
3217 | pattern = strdup(parameter); |
3218 | if (!pattern) | |
3219 | return -ENOMEM; | |
3220 | ||
8f7b2566 | 3221 | rule = (UnitFilePresetRule) { |
8965d9f8 AC |
3222 | .pattern = pattern, |
3223 | .action = PRESET_DISABLE, | |
3224 | }; | |
3225 | } | |
3226 | ||
3227 | if (rule.action) { | |
319a4f4b | 3228 | if (!GREEDY_REALLOC(ps.rules, ps.n_rules + 1)) |
8965d9f8 AC |
3229 | return -ENOMEM; |
3230 | ||
3231 | ps.rules[ps.n_rules++] = rule; | |
0ec0deaa LP |
3232 | continue; |
3233 | } | |
3234 | ||
d544d1a4 | 3235 | log_syntax(NULL, LOG_WARNING, *p, n, 0, "Couldn't parse line '%s'. Ignoring.", line); |
83096483 | 3236 | } |
83096483 LP |
3237 | } |
3238 | ||
8f7b2566 | 3239 | ps.initialized = true; |
8965d9f8 | 3240 | *presets = ps; |
8f7b2566 | 3241 | ps = (UnitFilePresets){}; |
8965d9f8 AC |
3242 | |
3243 | return 0; | |
3244 | } | |
3245 | ||
4c9565ee | 3246 | static int pattern_match_multiple_instances( |
8f7b2566 | 3247 | const UnitFilePresetRule rule, |
4c9565ee RB |
3248 | const char *unit_name, |
3249 | char ***ret) { | |
3250 | ||
3251 | _cleanup_free_ char *templated_name = NULL; | |
3252 | int r; | |
3253 | ||
3254 | /* If no ret is needed or the rule itself does not have instances | |
5238e957 | 3255 | * initialized, we return not matching */ |
4c9565ee RB |
3256 | if (!ret || !rule.instances) |
3257 | return 0; | |
3258 | ||
3259 | r = unit_name_template(unit_name, &templated_name); | |
3260 | if (r < 0) | |
3261 | return r; | |
3262 | if (!streq(rule.pattern, templated_name)) | |
3263 | return 0; | |
3264 | ||
3265 | /* Compose a list of specified instances when unit name is a template */ | |
3266 | if (unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) { | |
4c9565ee | 3267 | _cleanup_strv_free_ char **out_strv = NULL; |
4c9565ee RB |
3268 | |
3269 | STRV_FOREACH(iter, rule.instances) { | |
3270 | _cleanup_free_ char *name = NULL; | |
47ab95fe ZJS |
3271 | |
3272 | r = unit_name_replace_instance(unit_name, *iter, &name); | |
4c9565ee RB |
3273 | if (r < 0) |
3274 | return r; | |
47ab95fe ZJS |
3275 | |
3276 | r = strv_consume(&out_strv, TAKE_PTR(name)); | |
4c9565ee RB |
3277 | if (r < 0) |
3278 | return r; | |
3279 | } | |
3280 | ||
3281 | *ret = TAKE_PTR(out_strv); | |
3282 | return 1; | |
3283 | } else { | |
3284 | /* We now know the input unit name is an instance name */ | |
3285 | _cleanup_free_ char *instance_name = NULL; | |
3286 | ||
3287 | r = unit_name_to_instance(unit_name, &instance_name); | |
3288 | if (r < 0) | |
3289 | return r; | |
3290 | ||
3291 | if (strv_find(rule.instances, instance_name)) | |
3292 | return 1; | |
3293 | } | |
3294 | return 0; | |
3295 | } | |
3296 | ||
8f7b2566 | 3297 | static int query_presets(const char *name, const UnitFilePresets *presets, char ***instance_name_list) { |
8965d9f8 | 3298 | PresetAction action = PRESET_UNKNOWN; |
de8be28e | 3299 | |
8965d9f8 AC |
3300 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
3301 | return -EINVAL; | |
3302 | ||
de8be28e | 3303 | for (size_t i = 0; i < presets->n_rules; i++) |
8f7b2566 ZJS |
3304 | if (pattern_match_multiple_instances(presets->rules[i], name, instance_name_list) > 0 || |
3305 | fnmatch(presets->rules[i].pattern, name, FNM_NOESCAPE) == 0) { | |
3306 | action = presets->rules[i].action; | |
8965d9f8 AC |
3307 | break; |
3308 | } | |
3309 | ||
3310 | switch (action) { | |
3311 | case PRESET_UNKNOWN: | |
3312 | log_debug("Preset files don't specify rule for %s. Enabling.", name); | |
3313 | return 1; | |
3314 | case PRESET_ENABLE: | |
de010b0b | 3315 | if (instance_name_list && *instance_name_list) |
4c9565ee RB |
3316 | STRV_FOREACH(s, *instance_name_list) |
3317 | log_debug("Preset files say enable %s.", *s); | |
de010b0b | 3318 | else |
4c9565ee | 3319 | log_debug("Preset files say enable %s.", name); |
8965d9f8 AC |
3320 | return 1; |
3321 | case PRESET_DISABLE: | |
3322 | log_debug("Preset files say disable %s.", name); | |
3323 | return 0; | |
3324 | default: | |
04499a70 | 3325 | assert_not_reached(); |
8965d9f8 AC |
3326 | } |
3327 | } | |
3328 | ||
b380b643 | 3329 | int unit_file_query_preset(LookupScope scope, const char *root_dir, const char *name, UnitFilePresets *cached) { |
8f7b2566 | 3330 | _cleanup_(unit_file_presets_freep) UnitFilePresets tmp = {}; |
8965d9f8 AC |
3331 | int r; |
3332 | ||
8f7b2566 ZJS |
3333 | if (!cached) |
3334 | cached = &tmp; | |
3335 | if (!cached->initialized) { | |
3336 | r = read_presets(scope, root_dir, cached); | |
3337 | if (r < 0) | |
3338 | return r; | |
3339 | } | |
8965d9f8 | 3340 | |
8f7b2566 | 3341 | return query_presets(name, cached, NULL); |
83096483 LP |
3342 | } |
3343 | ||
0ec0deaa | 3344 | static int execute_preset( |
9b69770a | 3345 | UnitFileFlags file_flags, |
0ec0deaa LP |
3346 | InstallContext *plus, |
3347 | InstallContext *minus, | |
c3e7fba0 | 3348 | const LookupPaths *lp, |
1830ac51 | 3349 | const char *config_path, |
0ec0deaa LP |
3350 | char **files, |
3351 | UnitFilePresetMode mode, | |
0ec0deaa | 3352 | UnitFileChange **changes, |
da6053d0 | 3353 | size_t *n_changes) { |
0ec0deaa | 3354 | |
1830ac51 | 3355 | int r; |
0ec0deaa LP |
3356 | |
3357 | assert(plus); | |
3358 | assert(minus); | |
c3e7fba0 | 3359 | assert(lp); |
1830ac51 | 3360 | assert(config_path); |
0ec0deaa LP |
3361 | |
3362 | if (mode != UNIT_FILE_PRESET_ENABLE_ONLY) { | |
3363 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
3364 | ||
4a84db4c | 3365 | r = install_context_mark_for_removal(minus, lp, &remove_symlinks_to, config_path, changes, n_changes); |
1830ac51 MB |
3366 | if (r < 0) |
3367 | return r; | |
0ec0deaa | 3368 | |
c3e7fba0 | 3369 | r = remove_marked_symlinks(remove_symlinks_to, config_path, lp, false, changes, n_changes); |
1830ac51 MB |
3370 | } else |
3371 | r = 0; | |
0ec0deaa LP |
3372 | |
3373 | if (mode != UNIT_FILE_PRESET_DISABLE_ONLY) { | |
1830ac51 MB |
3374 | int q; |
3375 | ||
0ec0deaa | 3376 | /* Returns number of symlinks that where supposed to be installed. */ |
4a84db4c | 3377 | q = install_context_apply(plus, lp, |
ad5fdd39 | 3378 | file_flags | UNIT_FILE_IGNORE_AUXILIARY_FAILURE, |
4a84db4c ZJS |
3379 | config_path, |
3380 | SEARCH_LOAD, changes, n_changes); | |
1830ac51 MB |
3381 | if (r >= 0) { |
3382 | if (q < 0) | |
3383 | r = q; | |
3384 | else | |
3385 | r += q; | |
3386 | } | |
0ec0deaa LP |
3387 | } |
3388 | ||
3389 | return r; | |
3390 | } | |
3391 | ||
3392 | static int preset_prepare_one( | |
b380b643 | 3393 | LookupScope scope, |
0ec0deaa LP |
3394 | InstallContext *plus, |
3395 | InstallContext *minus, | |
c3e7fba0 | 3396 | LookupPaths *lp, |
af3d8113 | 3397 | const char *name, |
8f7b2566 | 3398 | const UnitFilePresets *presets, |
af3d8113 | 3399 | UnitFileChange **changes, |
da6053d0 | 3400 | size_t *n_changes) { |
0ec0deaa | 3401 | |
4a84db4c | 3402 | _cleanup_(install_context_done) InstallContext tmp = { .scope = scope }; |
4c9565ee | 3403 | _cleanup_strv_free_ char **instance_name_list = NULL; |
4a84db4c | 3404 | UnitFileInstallInfo *info; |
0ec0deaa LP |
3405 | int r; |
3406 | ||
11e11fd5 | 3407 | if (install_info_find(plus, name) || install_info_find(minus, name)) |
0ec0deaa LP |
3408 | return 0; |
3409 | ||
4a84db4c ZJS |
3410 | r = install_info_discover(&tmp, lp, name, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3411 | &info, changes, n_changes); | |
11e11fd5 ZJS |
3412 | if (r < 0) |
3413 | return r; | |
4a84db4c ZJS |
3414 | if (!streq(name, info->name)) { |
3415 | log_debug("Skipping %s because it is an alias for %s.", name, info->name); | |
11e11fd5 ZJS |
3416 | return 0; |
3417 | } | |
3418 | ||
4c9565ee | 3419 | r = query_presets(name, presets, &instance_name_list); |
0ec0deaa LP |
3420 | if (r < 0) |
3421 | return r; | |
3422 | ||
3423 | if (r > 0) { | |
de010b0b | 3424 | if (instance_name_list) |
4c9565ee | 3425 | STRV_FOREACH(s, instance_name_list) { |
4a84db4c ZJS |
3426 | r = install_info_discover_and_check(plus, lp, *s, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3427 | &info, changes, n_changes); | |
4c9565ee RB |
3428 | if (r < 0) |
3429 | return r; | |
3430 | } | |
de010b0b | 3431 | else { |
4a84db4c ZJS |
3432 | r = install_info_discover_and_check(plus, lp, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3433 | &info, changes, n_changes); | |
4c9565ee RB |
3434 | if (r < 0) |
3435 | return r; | |
3436 | } | |
0ec0deaa | 3437 | |
0ec0deaa | 3438 | } else |
4a84db4c ZJS |
3439 | r = install_info_discover(minus, lp, name, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3440 | &info, changes, n_changes); | |
0ec0deaa LP |
3441 | |
3442 | return r; | |
3443 | } | |
3444 | ||
83096483 | 3445 | int unit_file_preset( |
b380b643 | 3446 | LookupScope scope, |
9b69770a | 3447 | UnitFileFlags file_flags, |
83096483 | 3448 | const char *root_dir, |
0f87041f | 3449 | char **names, |
d309c1c3 | 3450 | UnitFilePresetMode mode, |
83096483 | 3451 | UnitFileChange **changes, |
da6053d0 | 3452 | size_t *n_changes) { |
83096483 | 3453 | |
59ccf93d | 3454 | _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; |
c3e7fba0 | 3455 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
8f7b2566 | 3456 | _cleanup_(unit_file_presets_freep) UnitFilePresets presets = {}; |
1830ac51 | 3457 | const char *config_path; |
0ec0deaa | 3458 | int r; |
83096483 LP |
3459 | |
3460 | assert(scope >= 0); | |
b380b643 | 3461 | assert(scope < _LOOKUP_SCOPE_MAX); |
86bbe5bf | 3462 | assert(mode < _UNIT_FILE_PRESET_MAX); |
83096483 | 3463 | |
c3e7fba0 | 3464 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
83096483 LP |
3465 | if (r < 0) |
3466 | return r; | |
3467 | ||
c3e7fba0 | 3468 | config_path = (file_flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
1830ac51 MB |
3469 | if (!config_path) |
3470 | return -ENXIO; | |
3471 | ||
8965d9f8 AC |
3472 | r = read_presets(scope, root_dir, &presets); |
3473 | if (r < 0) | |
3474 | return r; | |
83096483 | 3475 | |
0f87041f ZJS |
3476 | STRV_FOREACH(name, names) { |
3477 | r = preset_prepare_one(scope, &plus, &minus, &lp, *name, &presets, changes, n_changes); | |
83096483 | 3478 | if (r < 0) |
d9e5e694 | 3479 | return r; |
83096483 LP |
3480 | } |
3481 | ||
0f87041f | 3482 | return execute_preset(file_flags, &plus, &minus, &lp, config_path, names, mode, changes, n_changes); |
d309c1c3 LP |
3483 | } |
3484 | ||
3485 | int unit_file_preset_all( | |
b380b643 | 3486 | LookupScope scope, |
9b69770a | 3487 | UnitFileFlags file_flags, |
d309c1c3 LP |
3488 | const char *root_dir, |
3489 | UnitFilePresetMode mode, | |
d309c1c3 | 3490 | UnitFileChange **changes, |
da6053d0 | 3491 | size_t *n_changes) { |
d309c1c3 | 3492 | |
59ccf93d | 3493 | _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; |
c3e7fba0 | 3494 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
8f7b2566 | 3495 | _cleanup_(unit_file_presets_freep) UnitFilePresets presets = {}; |
1830ac51 | 3496 | const char *config_path = NULL; |
0ec0deaa | 3497 | int r; |
d309c1c3 LP |
3498 | |
3499 | assert(scope >= 0); | |
b380b643 | 3500 | assert(scope < _LOOKUP_SCOPE_MAX); |
86bbe5bf | 3501 | assert(mode < _UNIT_FILE_PRESET_MAX); |
d309c1c3 | 3502 | |
c3e7fba0 | 3503 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
d309c1c3 LP |
3504 | if (r < 0) |
3505 | return r; | |
3506 | ||
c3e7fba0 | 3507 | config_path = (file_flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
1830ac51 MB |
3508 | if (!config_path) |
3509 | return -ENXIO; | |
3510 | ||
8965d9f8 AC |
3511 | r = read_presets(scope, root_dir, &presets); |
3512 | if (r < 0) | |
3513 | return r; | |
3514 | ||
c3e7fba0 | 3515 | STRV_FOREACH(i, lp.search_path) { |
d309c1c3 | 3516 | _cleanup_closedir_ DIR *d = NULL; |
d309c1c3 | 3517 | |
401017e0 | 3518 | d = opendir(*i); |
d309c1c3 LP |
3519 | if (!d) { |
3520 | if (errno == ENOENT) | |
3521 | continue; | |
3522 | ||
3523 | return -errno; | |
3524 | } | |
3525 | ||
d25e100b | 3526 | FOREACH_DIRENT(de, d, return -errno) { |
1830ac51 | 3527 | |
7410616c | 3528 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
d309c1c3 LP |
3529 | continue; |
3530 | ||
0ec0deaa | 3531 | if (!IN_SET(de->d_type, DT_LNK, DT_REG)) |
d309c1c3 LP |
3532 | continue; |
3533 | ||
c3e7fba0 | 3534 | r = preset_prepare_one(scope, &plus, &minus, &lp, de->d_name, &presets, changes, n_changes); |
4a203a51 | 3535 | if (r < 0 && |
cbfdbffb | 3536 | !IN_SET(r, -EEXIST, -ERFKILL, -EADDRNOTAVAIL, -EBADSLT, -EIDRM, -EUCLEAN, -ELOOP, -ENOENT, -EUNATCH, -EXDEV)) |
4a203a51 ZJS |
3537 | /* Ignore generated/transient/missing/invalid units when applying preset, propagate other errors. |
3538 | * Coordinate with unit_file_dump_changes() above. */ | |
d309c1c3 LP |
3539 | return r; |
3540 | } | |
3541 | } | |
3542 | ||
4a84db4c | 3543 | return execute_preset(file_flags, &plus, &minus, &lp, config_path, NULL, mode, changes, n_changes); |
83096483 LP |
3544 | } |
3545 | ||
75db809a | 3546 | static UnitFileList* unit_file_list_free_one(UnitFileList *f) { |
59ccf93d | 3547 | if (!f) |
75db809a | 3548 | return NULL; |
d9e5e694 | 3549 | |
59ccf93d | 3550 | free(f->path); |
75db809a | 3551 | return mfree(f); |
d9e5e694 | 3552 | } |
59ccf93d | 3553 | |
0ec0deaa | 3554 | Hashmap* unit_file_list_free(Hashmap *h) { |
224b0e7a | 3555 | return hashmap_free_with_destructor(h, unit_file_list_free_one); |
0ec0deaa LP |
3556 | } |
3557 | ||
59ccf93d | 3558 | DEFINE_TRIVIAL_CLEANUP_FUNC(UnitFileList*, unit_file_list_free_one); |
d9e5e694 | 3559 | |
83096483 | 3560 | int unit_file_get_list( |
b380b643 | 3561 | LookupScope scope, |
83096483 | 3562 | const char *root_dir, |
313fe66f | 3563 | Hashmap *h, |
3564 | char **states, | |
3565 | char **patterns) { | |
83096483 | 3566 | |
c3e7fba0 | 3567 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
83096483 LP |
3568 | int r; |
3569 | ||
3570 | assert(scope >= 0); | |
b380b643 | 3571 | assert(scope < _LOOKUP_SCOPE_MAX); |
83096483 LP |
3572 | assert(h); |
3573 | ||
c3e7fba0 | 3574 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
83096483 LP |
3575 | if (r < 0) |
3576 | return r; | |
3577 | ||
c3e7fba0 | 3578 | STRV_FOREACH(dirname, lp.search_path) { |
da39f6a6 | 3579 | _cleanup_closedir_ DIR *d = NULL; |
83096483 | 3580 | |
9c894b85 | 3581 | d = opendir(*dirname); |
83096483 LP |
3582 | if (!d) { |
3583 | if (errno == ENOENT) | |
3584 | continue; | |
a1feacf7 | 3585 | if (IN_SET(errno, ENOTDIR, EACCES)) { |
9c894b85 | 3586 | log_debug_errno(errno, "Failed to open \"%s\": %m", *dirname); |
a1feacf7 ZJS |
3587 | continue; |
3588 | } | |
83096483 | 3589 | |
d9e5e694 | 3590 | return -errno; |
83096483 LP |
3591 | } |
3592 | ||
d25e100b | 3593 | FOREACH_DIRENT(de, d, return -errno) { |
59ccf93d | 3594 | _cleanup_(unit_file_list_free_onep) UnitFileList *f = NULL; |
83096483 | 3595 | |
7410616c | 3596 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
83096483 LP |
3597 | continue; |
3598 | ||
313fe66f | 3599 | if (!strv_fnmatch_or_empty(patterns, de->d_name, FNM_NOESCAPE)) |
3600 | continue; | |
3601 | ||
83096483 LP |
3602 | if (hashmap_get(h, de->d_name)) |
3603 | continue; | |
3604 | ||
da39f6a6 | 3605 | if (!IN_SET(de->d_type, DT_LNK, DT_REG)) |
83096483 LP |
3606 | continue; |
3607 | ||
3608 | f = new0(UnitFileList, 1); | |
d9e5e694 ZJS |
3609 | if (!f) |
3610 | return -ENOMEM; | |
83096483 | 3611 | |
9c894b85 | 3612 | f->path = path_make_absolute(de->d_name, *dirname); |
d9e5e694 ZJS |
3613 | if (!f->path) |
3614 | return -ENOMEM; | |
83096483 | 3615 | |
c3e7fba0 | 3616 | r = unit_file_lookup_state(scope, &lp, de->d_name, &f->state); |
d9e5e694 | 3617 | if (r < 0) |
0ec0deaa | 3618 | f->state = UNIT_FILE_BAD; |
81fc054d | 3619 | |
313fe66f | 3620 | if (!strv_isempty(states) && |
3621 | !strv_contains(states, unit_file_state_to_string(f->state))) | |
3622 | continue; | |
3623 | ||
2b6bf07d | 3624 | r = hashmap_put(h, basename(f->path), f); |
d9e5e694 ZJS |
3625 | if (r < 0) |
3626 | return r; | |
0ec0deaa | 3627 | |
d9e5e694 | 3628 | f = NULL; /* prevent cleanup */ |
83096483 LP |
3629 | } |
3630 | } | |
3631 | ||
77cd2c87 | 3632 | return 0; |
83096483 LP |
3633 | } |
3634 | ||
3635 | static const char* const unit_file_state_table[_UNIT_FILE_STATE_MAX] = { | |
babccf14 | 3636 | [UNIT_FILE_ENABLED] = "enabled", |
771faa9a | 3637 | [UNIT_FILE_ENABLED_RUNTIME] = "enabled-runtime", |
babccf14 ZJS |
3638 | [UNIT_FILE_LINKED] = "linked", |
3639 | [UNIT_FILE_LINKED_RUNTIME] = "linked-runtime", | |
15d7ab87 | 3640 | [UNIT_FILE_ALIAS] = "alias", |
babccf14 ZJS |
3641 | [UNIT_FILE_MASKED] = "masked", |
3642 | [UNIT_FILE_MASKED_RUNTIME] = "masked-runtime", | |
3643 | [UNIT_FILE_STATIC] = "static", | |
3644 | [UNIT_FILE_DISABLED] = "disabled", | |
3645 | [UNIT_FILE_INDIRECT] = "indirect", | |
3646 | [UNIT_FILE_GENERATED] = "generated", | |
3647 | [UNIT_FILE_TRANSIENT] = "transient", | |
3648 | [UNIT_FILE_BAD] = "bad", | |
83096483 LP |
3649 | }; |
3650 | ||
3651 | DEFINE_STRING_TABLE_LOOKUP(unit_file_state, UnitFileState); | |
c0576cd6 LP |
3652 | |
3653 | static const char* const unit_file_change_type_table[_UNIT_FILE_CHANGE_TYPE_MAX] = { | |
8ae27441 JS |
3654 | [UNIT_FILE_SYMLINK] = "symlink", |
3655 | [UNIT_FILE_UNLINK] = "unlink", | |
3656 | [UNIT_FILE_IS_MASKED] = "masked", | |
3657 | [UNIT_FILE_IS_DANGLING] = "dangling", | |
3658 | [UNIT_FILE_DESTINATION_NOT_PRESENT] = "destination not present", | |
3aa96361 | 3659 | [UNIT_FILE_AUXILIARY_FAILED] = "auxiliary unit failed", |
c0576cd6 LP |
3660 | }; |
3661 | ||
93419a96 | 3662 | DEFINE_STRING_TABLE_LOOKUP(unit_file_change_type, int); |
d309c1c3 | 3663 | |
86bbe5bf | 3664 | static const char* const unit_file_preset_mode_table[_UNIT_FILE_PRESET_MAX] = { |
babccf14 ZJS |
3665 | [UNIT_FILE_PRESET_FULL] = "full", |
3666 | [UNIT_FILE_PRESET_ENABLE_ONLY] = "enable-only", | |
d309c1c3 LP |
3667 | [UNIT_FILE_PRESET_DISABLE_ONLY] = "disable-only", |
3668 | }; | |
3669 | ||
3670 | DEFINE_STRING_TABLE_LOOKUP(unit_file_preset_mode, UnitFilePresetMode); |