]>
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" |
f461a28d | 13 | #include "chase.h" |
07630cea LP |
14 | #include "conf-files.h" |
15 | #include "conf-parser.h" | |
28db6fbf | 16 | #include "constants.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 { |
4870133b | 50 | RuntimeScope 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 | |
0047d54d | 67 | static bool install_info_has_rules(const InstallInfo *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 | ||
0047d54d | 75 | static bool install_info_has_also(const InstallInfo *i) { |
7a7ec2bf ZJS |
76 | assert(i); |
77 | ||
78 | return !strv_isempty(i->also); | |
79 | } | |
80 | ||
52c788e6 DT |
81 | static void unit_file_preset_rule_done(UnitFilePresetRule *rule) { |
82 | assert(rule); | |
83 | ||
84 | free(rule->pattern); | |
85 | strv_free(rule->instances); | |
86 | } | |
87 | ||
05cdf6a7 | 88 | void unit_file_presets_done(UnitFilePresets *p) { |
8965d9f8 AC |
89 | if (!p) |
90 | return; | |
91 | ||
f52477d6 DT |
92 | FOREACH_ARRAY(rule, p->rules, p->n_rules) |
93 | unit_file_preset_rule_done(rule); | |
8965d9f8 AC |
94 | |
95 | free(p->rules); | |
96 | p->n_rules = 0; | |
97 | } | |
98 | ||
318031fd ZJS |
99 | static const char *const install_mode_table[_INSTALL_MODE_MAX] = { |
100 | [INSTALL_MODE_REGULAR] = "regular", | |
101 | [INSTALL_MODE_LINKED] = "linked", | |
102 | [INSTALL_MODE_ALIAS] = "alias", | |
103 | [INSTALL_MODE_MASKED] = "masked", | |
64f9280e ZJS |
104 | }; |
105 | ||
318031fd | 106 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(install_mode, InstallMode); |
64f9280e | 107 | |
c3e7fba0 | 108 | static int in_search_path(const LookupPaths *lp, const char *path) { |
8f294b45 | 109 | _cleanup_free_ char *parent = NULL; |
45519d13 | 110 | int r; |
8f294b45 | 111 | |
a6f318a5 | 112 | /* Check if 'path' is in lp->search_path. */ |
8f294b45 | 113 | |
a6f318a5 | 114 | r = path_extract_directory(ASSERT_PTR(path), &parent); |
45519d13 LP |
115 | if (r < 0) |
116 | return r; | |
8f294b45 | 117 | |
a6f318a5 ZJS |
118 | return path_strv_contains(ASSERT_PTR(lp)->search_path, parent); |
119 | } | |
120 | ||
121 | static int underneath_search_path(const LookupPaths *lp, const char *path) { | |
122 | /* Check if 'path' is underneath lp->search_path. */ | |
123 | ||
124 | return !!path_startswith_strv(ASSERT_PTR(path), ASSERT_PTR(lp)->search_path); | |
8f294b45 LP |
125 | } |
126 | ||
c3e7fba0 | 127 | static const char* skip_root(const char *root_dir, const char *path) { |
8f9364f9 | 128 | assert(path); |
401017e0 | 129 | |
c3e7fba0 | 130 | if (!root_dir) |
8f9364f9 | 131 | return path; |
401017e0 | 132 | |
c3e7fba0 | 133 | const char *e = path_startswith(path, root_dir); |
8f9364f9 LP |
134 | if (!e) |
135 | return NULL; | |
136 | ||
137 | /* Make sure the returned path starts with a slash */ | |
138 | if (e[0] != '/') { | |
139 | if (e == path || e[-1] != '/') | |
140 | return NULL; | |
401017e0 | 141 | |
8f9364f9 | 142 | e--; |
401017e0 LP |
143 | } |
144 | ||
8f9364f9 | 145 | return e; |
401017e0 LP |
146 | } |
147 | ||
c3e7fba0 | 148 | static int path_is_generator(const LookupPaths *lp, const char *path) { |
f4139308 | 149 | _cleanup_free_ char *parent = NULL; |
45519d13 | 150 | int r; |
f4139308 | 151 | |
c3e7fba0 | 152 | assert(lp); |
f4139308 LP |
153 | assert(path); |
154 | ||
45519d13 LP |
155 | r = path_extract_directory(path, &parent); |
156 | if (r < 0) | |
157 | return r; | |
f4139308 | 158 | |
c3e7fba0 ZJS |
159 | return path_equal_ptr(parent, lp->generator) || |
160 | path_equal_ptr(parent, lp->generator_early) || | |
161 | path_equal_ptr(parent, lp->generator_late); | |
f4139308 LP |
162 | } |
163 | ||
c3e7fba0 | 164 | static int path_is_transient(const LookupPaths *lp, const char *path) { |
e4fca67f | 165 | _cleanup_free_ char *parent = NULL; |
45519d13 | 166 | int r; |
e4fca67f | 167 | |
c3e7fba0 | 168 | assert(lp); |
e4fca67f LP |
169 | assert(path); |
170 | ||
45519d13 LP |
171 | r = path_extract_directory(path, &parent); |
172 | if (r < 0) | |
173 | return r; | |
e4fca67f | 174 | |
c3e7fba0 | 175 | return path_equal_ptr(parent, lp->transient); |
e4fca67f LP |
176 | } |
177 | ||
c3e7fba0 | 178 | static int path_is_control(const LookupPaths *lp, const char *path) { |
e1c5c2b0 | 179 | _cleanup_free_ char *parent = NULL; |
45519d13 | 180 | int r; |
0ec0deaa | 181 | |
c3e7fba0 | 182 | assert(lp); |
0ec0deaa LP |
183 | assert(path); |
184 | ||
45519d13 LP |
185 | r = path_extract_directory(path, &parent); |
186 | if (r < 0) | |
187 | return r; | |
0ec0deaa | 188 | |
c3e7fba0 ZJS |
189 | return path_equal_ptr(parent, lp->persistent_control) || |
190 | path_equal_ptr(parent, lp->runtime_control); | |
344ca755 LP |
191 | } |
192 | ||
c3e7fba0 | 193 | static int path_is_config(const LookupPaths *lp, const char *path, bool check_parent) { |
344ca755 | 194 | _cleanup_free_ char *parent = NULL; |
45519d13 | 195 | int r; |
344ca755 | 196 | |
c3e7fba0 | 197 | assert(lp); |
344ca755 LP |
198 | assert(path); |
199 | ||
d7604756 ZJS |
200 | /* Note that we do *not* have generic checks for /etc or /run in place, since with |
201 | * them we couldn't discern configuration from transient or generated units */ | |
0ec0deaa | 202 | |
dfead90d | 203 | if (check_parent) { |
45519d13 LP |
204 | r = path_extract_directory(path, &parent); |
205 | if (r < 0) | |
206 | return r; | |
dfead90d LP |
207 | |
208 | path = parent; | |
209 | } | |
0ec0deaa | 210 | |
c3e7fba0 ZJS |
211 | return path_equal_ptr(path, lp->persistent_config) || |
212 | path_equal_ptr(path, lp->runtime_config); | |
0ec0deaa LP |
213 | } |
214 | ||
c3e7fba0 | 215 | static int path_is_runtime(const LookupPaths *lp, const char *path, bool check_parent) { |
385eb996 | 216 | _cleanup_free_ char *parent = NULL; |
401017e0 | 217 | const char *rpath; |
45519d13 | 218 | int r; |
385eb996 | 219 | |
c3e7fba0 | 220 | assert(lp); |
385eb996 LP |
221 | assert(path); |
222 | ||
d7604756 ZJS |
223 | /* Everything in /run is considered runtime. On top of that we also add |
224 | * explicit checks for the various runtime directories, as safety net. */ | |
344ca755 | 225 | |
c3e7fba0 | 226 | rpath = skip_root(lp->root_dir, path); |
401017e0 | 227 | if (rpath && path_startswith(rpath, "/run")) |
385eb996 LP |
228 | return true; |
229 | ||
dfead90d | 230 | if (check_parent) { |
45519d13 LP |
231 | r = path_extract_directory(path, &parent); |
232 | if (r < 0) | |
233 | return r; | |
385eb996 | 234 | |
dfead90d LP |
235 | path = parent; |
236 | } | |
237 | ||
c3e7fba0 ZJS |
238 | return path_equal_ptr(path, lp->runtime_config) || |
239 | path_equal_ptr(path, lp->generator) || | |
240 | path_equal_ptr(path, lp->generator_early) || | |
241 | path_equal_ptr(path, lp->generator_late) || | |
242 | path_equal_ptr(path, lp->transient) || | |
243 | path_equal_ptr(path, lp->runtime_control); | |
344ca755 LP |
244 | } |
245 | ||
c3e7fba0 | 246 | static int path_is_vendor_or_generator(const LookupPaths *lp, const char *path) { |
344ca755 LP |
247 | const char *rpath; |
248 | ||
c3e7fba0 | 249 | assert(lp); |
344ca755 LP |
250 | assert(path); |
251 | ||
c3e7fba0 | 252 | rpath = skip_root(lp->root_dir, path); |
344ca755 LP |
253 | if (!rpath) |
254 | return 0; | |
255 | ||
256 | if (path_startswith(rpath, "/usr")) | |
257 | return true; | |
258 | ||
349cc4a5 | 259 | #if HAVE_SPLIT_USR |
344ca755 LP |
260 | if (path_startswith(rpath, "/lib")) |
261 | return true; | |
262 | #endif | |
263 | ||
c3e7fba0 | 264 | if (path_is_generator(lp, rpath)) |
efdbf5fe JC |
265 | return true; |
266 | ||
835cf75a | 267 | return path_equal(rpath, SYSTEM_DATA_UNIT_DIR); |
385eb996 LP |
268 | } |
269 | ||
c3e7fba0 ZJS |
270 | static const char* config_path_from_flags(const LookupPaths *lp, UnitFileFlags flags) { |
271 | assert(lp); | |
83654007 LB |
272 | |
273 | if (FLAGS_SET(flags, UNIT_FILE_PORTABLE)) | |
c3e7fba0 | 274 | return FLAGS_SET(flags, UNIT_FILE_RUNTIME) ? lp->runtime_attached : lp->persistent_attached; |
83654007 | 275 | else |
c3e7fba0 | 276 | return FLAGS_SET(flags, UNIT_FILE_RUNTIME) ? lp->runtime_config : lp->persistent_config; |
83654007 LB |
277 | } |
278 | ||
94e7298d | 279 | InstallChangeType install_changes_add( |
cd44ec5a | 280 | InstallChange **changes, |
da6053d0 | 281 | size_t *n_changes, |
f8662fee | 282 | InstallChangeType type, /* INSTALL_CHANGE_SYMLINK, _UNLINK, _IS_MASKED, _IS_DANGLING, … if positive or errno if negative */ |
0ec0deaa LP |
283 | const char *path, |
284 | const char *source) { | |
285 | ||
12bf0ae4 | 286 | _cleanup_free_ char *p = NULL, *s = NULL; |
cd44ec5a | 287 | InstallChange *c; |
0ec0deaa | 288 | |
0ec0deaa | 289 | assert(!changes == !n_changes); |
f8662fee | 290 | assert(INSTALL_CHANGE_TYPE_VALID(type)); |
93419a96 | 291 | |
4a4af850 ZJS |
292 | /* Message formatting requires <path> to be set. */ |
293 | assert(path); | |
294 | ||
94e7298d ZJS |
295 | /* Register a change or error. Note that the return value may be the error |
296 | * that was passed in, or -ENOMEM generated internally. */ | |
297 | ||
0ec0deaa | 298 | if (!changes) |
94e7298d | 299 | return type; |
0ec0deaa | 300 | |
cd44ec5a | 301 | c = reallocarray(*changes, *n_changes + 1, sizeof(InstallChange)); |
0ec0deaa LP |
302 | if (!c) |
303 | return -ENOMEM; | |
0ec0deaa | 304 | *changes = c; |
0ec0deaa | 305 | |
3aa96361 ZJS |
306 | if (path) { |
307 | p = strdup(path); | |
308 | if (!p) | |
309 | return -ENOMEM; | |
0ec0deaa | 310 | |
3aa96361 ZJS |
311 | path_simplify(p); |
312 | } | |
93419a96 LP |
313 | |
314 | if (source) { | |
315 | s = strdup(source); | |
316 | if (!s) | |
317 | return -ENOMEM; | |
318 | ||
4ff361cc | 319 | path_simplify(s); |
93419a96 LP |
320 | } |
321 | ||
cd44ec5a | 322 | c[(*n_changes)++] = (InstallChange) { |
f8662fee | 323 | .type = type, |
93419a96 LP |
324 | .path = TAKE_PTR(p), |
325 | .source = TAKE_PTR(s), | |
326 | }; | |
0ec0deaa | 327 | |
94e7298d | 328 | return type; |
0ec0deaa LP |
329 | } |
330 | ||
cd44ec5a | 331 | void install_changes_free(InstallChange *changes, size_t n_changes) { |
0ec0deaa LP |
332 | assert(changes || n_changes == 0); |
333 | ||
de8be28e | 334 | for (size_t i = 0; i < n_changes; i++) { |
0ec0deaa LP |
335 | free(changes[i].path); |
336 | free(changes[i].source); | |
337 | } | |
338 | ||
339 | free(changes); | |
340 | } | |
341 | ||
cd44ec5a | 342 | void install_changes_dump(int r, const char *verb, const InstallChange *changes, size_t n_changes, bool quiet) { |
32450f53 | 343 | int err = 0; |
af3d8113 ZJS |
344 | |
345 | assert(changes || n_changes == 0); | |
346 | /* If verb is not specified, errors are not allowed! */ | |
347 | assert(verb || r >= 0); | |
348 | ||
de8be28e | 349 | for (size_t i = 0; i < n_changes; i++) { |
8f5d716a ZJS |
350 | if (changes[i].type < 0) |
351 | assert(verb); | |
4a4af850 | 352 | assert(changes[i].path); |
af3d8113 | 353 | |
5ad58fea ZJS |
354 | /* When making changes here, make sure to also change install_error() in dbus-manager.c. */ |
355 | ||
f8662fee | 356 | switch (changes[i].type) { |
1308f72e | 357 | case INSTALL_CHANGE_SYMLINK: |
af3d8113 | 358 | if (!quiet) |
a760db24 ZJS |
359 | log_info("Created symlink %s %s %s.", |
360 | changes[i].path, | |
fc03e80c | 361 | special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), |
a760db24 | 362 | changes[i].source); |
af3d8113 | 363 | break; |
1308f72e | 364 | case INSTALL_CHANGE_UNLINK: |
af3d8113 | 365 | if (!quiet) |
e75a26d0 | 366 | log_info("Removed \"%s\".", changes[i].path); |
af3d8113 | 367 | break; |
1308f72e | 368 | case INSTALL_CHANGE_IS_MASKED: |
af3d8113 ZJS |
369 | if (!quiet) |
370 | log_info("Unit %s is masked, ignoring.", changes[i].path); | |
371 | break; | |
bf3b0d5f ZJS |
372 | case INSTALL_CHANGE_IS_MASKED_GENERATOR: |
373 | if (!quiet) | |
374 | log_info("Unit %s is masked via a generator and cannot be unmasked.", | |
375 | changes[i].path); | |
376 | break; | |
1308f72e | 377 | case INSTALL_CHANGE_IS_DANGLING: |
893275df ZJS |
378 | if (!quiet) |
379 | log_info("Unit %s is an alias to a unit that is not present, ignoring.", | |
380 | changes[i].path); | |
381 | break; | |
1308f72e | 382 | case INSTALL_CHANGE_DESTINATION_NOT_PRESENT: |
8ae27441 JS |
383 | if (!quiet) |
384 | log_warning("Unit %s is added as a dependency to a non-existent unit %s.", | |
385 | changes[i].source, changes[i].path); | |
386 | break; | |
1308f72e | 387 | case INSTALL_CHANGE_AUXILIARY_FAILED: |
3aa96361 | 388 | if (!quiet) |
4a4af850 | 389 | log_warning("Failed to enable auxiliary unit %s, ignoring.", changes[i].path); |
3aa96361 | 390 | break; |
af3d8113 ZJS |
391 | case -EEXIST: |
392 | if (changes[i].source) | |
f8662fee | 393 | err = log_error_errno(changes[i].type, |
32450f53 ZJS |
394 | "Failed to %s unit, file \"%s\" already exists and is a symlink to \"%s\".", |
395 | verb, changes[i].path, changes[i].source); | |
af3d8113 | 396 | else |
f8662fee | 397 | err = log_error_errno(changes[i].type, |
32450f53 ZJS |
398 | "Failed to %s unit, file \"%s\" already exists.", |
399 | verb, changes[i].path); | |
af3d8113 ZJS |
400 | break; |
401 | case -ERFKILL: | |
f8662fee | 402 | err = log_error_errno(changes[i].type, "Failed to %s unit, unit %s is masked.", |
32450f53 | 403 | verb, changes[i].path); |
af3d8113 ZJS |
404 | break; |
405 | case -EADDRNOTAVAIL: | |
f8662fee | 406 | err = log_error_errno(changes[i].type, "Failed to %s unit, unit %s is transient or generated.", |
32450f53 | 407 | verb, changes[i].path); |
af3d8113 | 408 | break; |
a6f318a5 ZJS |
409 | case -ETXTBSY: |
410 | err = log_error_errno(changes[i].type, "Failed to %s unit, file %s is under the systemd unit hierarchy already.", | |
411 | verb, changes[i].path); | |
412 | break; | |
19b9d5d0 | 413 | case -EBADSLT: |
f8662fee | 414 | err = log_error_errno(changes[i].type, "Failed to %s unit, invalid specifier in \"%s\".", |
32450f53 | 415 | verb, changes[i].path); |
19b9d5d0 | 416 | break; |
b0ec372a | 417 | case -EIDRM: |
f8662fee | 418 | err = log_error_errno(changes[i].type, "Failed to %s %s, destination unit %s is a non-template unit.", |
32450f53 | 419 | verb, changes[i].source, changes[i].path); |
b0ec372a | 420 | break; |
d7ceaf72 | 421 | case -EUCLEAN: |
f8662fee | 422 | err = log_error_errno(changes[i].type, |
32450f53 ZJS |
423 | "Failed to %s unit, \"%s\" is not a valid unit name.", |
424 | verb, changes[i].path); | |
d7ceaf72 | 425 | break; |
af3d8113 | 426 | case -ELOOP: |
f8662fee | 427 | err = log_error_errno(changes[i].type, "Failed to %s unit, refusing to operate on linked unit file %s.", |
32450f53 | 428 | verb, changes[i].path); |
af3d8113 | 429 | break; |
cbfdbffb ZJS |
430 | case -EXDEV: |
431 | if (changes[i].source) | |
f8662fee | 432 | err = log_error_errno(changes[i].type, "Failed to %s unit, cannot alias %s as %s.", |
cbfdbffb ZJS |
433 | verb, changes[i].source, changes[i].path); |
434 | else | |
f8662fee | 435 | err = log_error_errno(changes[i].type, "Failed to %s unit, invalid unit reference \"%s\".", |
cbfdbffb ZJS |
436 | verb, changes[i].path); |
437 | break; | |
637d6e5b | 438 | case -ENOENT: |
f8662fee | 439 | err = log_error_errno(changes[i].type, "Failed to %s unit, unit %s does not exist.", |
32450f53 | 440 | verb, changes[i].path); |
637d6e5b | 441 | break; |
6ec4c852 | 442 | case -EUNATCH: |
f8662fee | 443 | err = log_error_errno(changes[i].type, "Failed to %s unit, cannot resolve specifiers in \"%s\".", |
32450f53 | 444 | verb, changes[i].path); |
6ec4c852 | 445 | break; |
af3d8113 | 446 | default: |
f8662fee LP |
447 | assert(changes[i].type < 0); |
448 | err = log_error_errno(changes[i].type, "Failed to %s unit, file \"%s\": %m", | |
32450f53 | 449 | verb, changes[i].path); |
af3d8113 ZJS |
450 | } |
451 | } | |
452 | ||
32450f53 | 453 | if (r < 0 && err >= 0) |
af3d8113 ZJS |
454 | log_error_errno(r, "Failed to %s: %m.", verb); |
455 | } | |
456 | ||
25ea9277 | 457 | /** |
3fc53351 ZJS |
458 | * Checks if two symlink targets (starting from src) are equivalent as far as the unit enablement logic is |
459 | * concerned. If the target is in the unit search path, then anything with the same name is equivalent. | |
460 | * If outside the unit search path, paths must be identical. | |
25ea9277 | 461 | */ |
3fc53351 ZJS |
462 | static int chroot_unit_symlinks_equivalent( |
463 | const LookupPaths *lp, | |
464 | const char *src, | |
465 | const char *target_a, | |
466 | const char *target_b) { | |
467 | ||
468 | assert(lp); | |
469 | assert(src); | |
470 | assert(target_a); | |
471 | assert(target_b); | |
25ea9277 ZJS |
472 | |
473 | /* This will give incorrect results if the paths are relative and go outside | |
474 | * of the chroot. False negatives are possible. */ | |
475 | ||
3fc53351 ZJS |
476 | const char *root = lp->root_dir ?: "/"; |
477 | _cleanup_free_ char *dirname = NULL; | |
478 | int r; | |
479 | ||
480 | if (!path_is_absolute(target_a) || !path_is_absolute(target_b)) { | |
481 | r = path_extract_directory(src, &dirname); | |
482 | if (r < 0) | |
483 | return r; | |
484 | } | |
485 | ||
486 | _cleanup_free_ char *a = path_join(path_is_absolute(target_a) ? root : dirname, target_a); | |
487 | _cleanup_free_ char *b = path_join(path_is_absolute(target_b) ? root : dirname, target_b); | |
488 | if (!a || !b) | |
489 | return log_oom(); | |
ae9efab7 | 490 | |
3fc53351 ZJS |
491 | r = path_equal_or_files_same(a, b, 0); |
492 | if (r != 0) | |
493 | return r; | |
494 | ||
495 | _cleanup_free_ char *a_name = NULL, *b_name = NULL; | |
496 | r = path_extract_filename(a, &a_name); | |
497 | if (r < 0) | |
498 | return r; | |
499 | r = path_extract_filename(b, &b_name); | |
500 | if (r < 0) | |
501 | return r; | |
502 | ||
503 | return streq(a_name, b_name) && | |
504 | path_startswith_strv(a, lp->search_path) && | |
505 | path_startswith_strv(b, lp->search_path); | |
25ea9277 ZJS |
506 | } |
507 | ||
0ec0deaa | 508 | static int create_symlink( |
c3e7fba0 | 509 | const LookupPaths *lp, |
0ec0deaa LP |
510 | const char *old_path, |
511 | const char *new_path, | |
512 | bool force, | |
cd44ec5a | 513 | InstallChange **changes, |
da6053d0 | 514 | size_t *n_changes) { |
0ec0deaa | 515 | |
3fc53351 | 516 | _cleanup_free_ char *dest = NULL; |
60bec8e4 | 517 | const char *rp; |
0ec0deaa LP |
518 | int r; |
519 | ||
520 | assert(old_path); | |
521 | assert(new_path); | |
522 | ||
c3e7fba0 | 523 | rp = skip_root(lp->root_dir, old_path); |
60bec8e4 ZJS |
524 | if (rp) |
525 | old_path = rp; | |
526 | ||
4f5c2485 ZJS |
527 | /* Actually create a symlink, and remember that we did. This function is |
528 | * smart enough to check if there's already a valid symlink in place. | |
85158303 | 529 | * |
4f5c2485 ZJS |
530 | * Returns 1 if a symlink was created or already exists and points to the |
531 | * right place, or negative on error. | |
85158303 | 532 | */ |
0ec0deaa | 533 | |
35cd0ba5 | 534 | (void) mkdir_parents_label(new_path, 0755); |
0ec0deaa LP |
535 | |
536 | if (symlink(old_path, new_path) >= 0) { | |
f31f10a6 ZJS |
537 | r = install_changes_add(changes, n_changes, INSTALL_CHANGE_SYMLINK, new_path, old_path); |
538 | if (r < 0) | |
539 | return r; | |
3de15214 | 540 | return 1; |
0ec0deaa LP |
541 | } |
542 | ||
94e7298d ZJS |
543 | if (errno != EEXIST) |
544 | return install_changes_add(changes, n_changes, -errno, new_path, NULL); | |
0ec0deaa LP |
545 | |
546 | r = readlink_malloc(new_path, &dest); | |
7d782f26 ZJS |
547 | if (r < 0) { |
548 | /* translate EINVAL (non-symlink exists) to EEXIST */ | |
549 | if (r == -EINVAL) | |
550 | r = -EEXIST; | |
551 | ||
94e7298d | 552 | return install_changes_add(changes, n_changes, r, new_path, NULL); |
7d782f26 | 553 | } |
0ec0deaa | 554 | |
3fc53351 | 555 | if (chroot_unit_symlinks_equivalent(lp, new_path, dest, old_path)) { |
e2341b6b DT |
556 | log_debug("Symlink %s %s %s already exists", |
557 | new_path, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), dest); | |
85158303 | 558 | return 1; |
3e8d06d9 | 559 | } |
0ec0deaa | 560 | |
94e7298d ZJS |
561 | if (!force) |
562 | return install_changes_add(changes, n_changes, -EEXIST, new_path, dest); | |
0ec0deaa LP |
563 | |
564 | r = symlink_atomic(old_path, new_path); | |
94e7298d ZJS |
565 | if (r < 0) |
566 | return install_changes_add(changes, n_changes, r, new_path, NULL); | |
0ec0deaa | 567 | |
f31f10a6 ZJS |
568 | r = install_changes_add(changes, n_changes, INSTALL_CHANGE_UNLINK, new_path, NULL); |
569 | if (r < 0) | |
570 | return r; | |
571 | r = install_changes_add(changes, n_changes, INSTALL_CHANGE_SYMLINK, new_path, old_path); | |
572 | if (r < 0) | |
573 | return r; | |
0ec0deaa | 574 | |
3de15214 | 575 | return 1; |
0ec0deaa LP |
576 | } |
577 | ||
83096483 LP |
578 | static int mark_symlink_for_removal( |
579 | Set **remove_symlinks_to, | |
580 | const char *p) { | |
581 | ||
582 | char *n; | |
583 | int r; | |
584 | ||
585 | assert(p); | |
586 | ||
548f6937 | 587 | r = set_ensure_allocated(remove_symlinks_to, &path_hash_ops); |
83096483 LP |
588 | if (r < 0) |
589 | return r; | |
590 | ||
591 | n = strdup(p); | |
592 | if (!n) | |
593 | return -ENOMEM; | |
594 | ||
4ff361cc | 595 | path_simplify(n); |
83096483 | 596 | |
ef42202a | 597 | r = set_consume(*remove_symlinks_to, n); |
d25e100b LP |
598 | if (r == -EEXIST) |
599 | return 0; | |
ef42202a | 600 | if (r < 0) |
d25e100b | 601 | return r; |
83096483 | 602 | |
0ec0deaa | 603 | return 1; |
83096483 LP |
604 | } |
605 | ||
606 | static int remove_marked_symlinks_fd( | |
607 | Set *remove_symlinks_to, | |
608 | int fd, | |
609 | const char *path, | |
610 | const char *config_path, | |
401017e0 | 611 | const LookupPaths *lp, |
3b3557c4 | 612 | bool dry_run, |
0ec0deaa | 613 | bool *restart, |
cd44ec5a | 614 | InstallChange **changes, |
da6053d0 | 615 | size_t *n_changes) { |
83096483 | 616 | |
7fd1b19b | 617 | _cleanup_closedir_ DIR *d = NULL; |
bcafe923 | 618 | int r = 0; |
83096483 LP |
619 | |
620 | assert(remove_symlinks_to); | |
621 | assert(fd >= 0); | |
622 | assert(path); | |
623 | assert(config_path); | |
401017e0 | 624 | assert(lp); |
0ec0deaa | 625 | assert(restart); |
83096483 LP |
626 | |
627 | d = fdopendir(fd); | |
628 | if (!d) { | |
03e334a1 | 629 | safe_close(fd); |
83096483 LP |
630 | return -errno; |
631 | } | |
632 | ||
633 | rewinddir(d); | |
634 | ||
06693181 | 635 | FOREACH_DIRENT(de, d, return -errno) |
83096483 | 636 | |
83096483 | 637 | if (de->d_type == DT_DIR) { |
7fd1b19b | 638 | _cleanup_free_ char *p = NULL; |
d25e100b | 639 | int nfd, q; |
83096483 LP |
640 | |
641 | nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
642 | if (nfd < 0) { | |
643 | if (errno == ENOENT) | |
644 | continue; | |
645 | ||
646 | if (r == 0) | |
647 | r = -errno; | |
648 | continue; | |
649 | } | |
650 | ||
651 | p = path_make_absolute(de->d_name, path); | |
652 | if (!p) { | |
03e334a1 | 653 | safe_close(nfd); |
d9e5e694 | 654 | return -ENOMEM; |
83096483 LP |
655 | } |
656 | ||
657 | /* This will close nfd, regardless whether it succeeds or not */ | |
3b3557c4 | 658 | q = remove_marked_symlinks_fd(remove_symlinks_to, nfd, p, config_path, lp, dry_run, restart, changes, n_changes); |
bcafe923 | 659 | if (q < 0 && r == 0) |
83096483 LP |
660 | r = q; |
661 | ||
662 | } else if (de->d_type == DT_LNK) { | |
7a6c73da | 663 | _cleanup_free_ char *p = NULL; |
83096483 | 664 | bool found; |
0ec0deaa | 665 | int q; |
83096483 | 666 | |
7410616c | 667 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
bcafe923 LP |
668 | continue; |
669 | ||
83096483 | 670 | p = path_make_absolute(de->d_name, path); |
d9e5e694 ZJS |
671 | if (!p) |
672 | return -ENOMEM; | |
4ff361cc | 673 | path_simplify(p); |
83096483 | 674 | |
7a6c73da | 675 | /* We remove all links pointing to a file or path that is marked, as well as all |
9f61c9f7 ZJS |
676 | * files sharing the same name as a file that is marked, and files sharing the same |
677 | * name after the instance has been removed. Do path chasing only if we don't already | |
678 | * know that we want to remove the symlink. */ | |
7a6c73da | 679 | found = set_contains(remove_symlinks_to, de->d_name); |
212a24f0 | 680 | |
7a6c73da | 681 | if (!found) { |
9f61c9f7 ZJS |
682 | _cleanup_free_ char *template = NULL; |
683 | ||
684 | q = unit_name_template(de->d_name, &template); | |
685 | if (q < 0 && q != -EINVAL) | |
686 | return q; | |
687 | if (q >= 0) | |
688 | found = set_contains(remove_symlinks_to, template); | |
689 | } | |
7a6c73da | 690 | |
9f61c9f7 ZJS |
691 | if (!found) { |
692 | _cleanup_free_ char *dest = NULL; | |
7a6c73da | 693 | |
f461a28d | 694 | q = chase(p, lp->root_dir, CHASE_NONEXISTENT, &dest, NULL); |
7a6c73da ZJS |
695 | if (q == -ENOENT) |
696 | continue; | |
697 | if (q < 0) { | |
698 | log_debug_errno(q, "Failed to resolve symlink \"%s\": %m", p); | |
cd44ec5a | 699 | install_changes_add(changes, n_changes, q, p, NULL); |
83096483 | 700 | |
7a6c73da ZJS |
701 | if (r == 0) |
702 | r = q; | |
703 | continue; | |
704 | } | |
705 | ||
706 | found = set_contains(remove_symlinks_to, dest) || | |
707 | set_contains(remove_symlinks_to, basename(dest)); | |
708 | ||
709 | } | |
0ec0deaa | 710 | |
83096483 | 711 | |
1dacfd2a LP |
712 | if (!found) |
713 | continue; | |
83096483 | 714 | |
3b3557c4 JS |
715 | if (!dry_run) { |
716 | if (unlinkat(fd, de->d_name, 0) < 0 && errno != ENOENT) { | |
717 | if (r == 0) | |
718 | r = -errno; | |
cd44ec5a | 719 | install_changes_add(changes, n_changes, -errno, p, NULL); |
3b3557c4 JS |
720 | continue; |
721 | } | |
bcafe923 | 722 | |
3b3557c4 JS |
723 | (void) rmdir_parents(p, config_path); |
724 | } | |
83096483 | 725 | |
f31f10a6 ZJS |
726 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_UNLINK, p, NULL); |
727 | if (q < 0) | |
728 | return q; | |
1dacfd2a | 729 | |
12bf0ae4 ZJS |
730 | /* Now, remember the full path (but with the root prefix removed) of |
731 | * the symlink we just removed, and remove any symlinks to it, too. */ | |
401017e0 | 732 | |
7a6c73da | 733 | const char *rp = skip_root(lp->root_dir, p); |
401017e0 | 734 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: p); |
0ec0deaa LP |
735 | if (q < 0) |
736 | return q; | |
3b3557c4 | 737 | if (q > 0 && !dry_run) |
0ec0deaa | 738 | *restart = true; |
83096483 | 739 | } |
83096483 | 740 | |
83096483 LP |
741 | return r; |
742 | } | |
743 | ||
744 | static int remove_marked_symlinks( | |
745 | Set *remove_symlinks_to, | |
746 | const char *config_path, | |
401017e0 | 747 | const LookupPaths *lp, |
3b3557c4 | 748 | bool dry_run, |
cd44ec5a | 749 | InstallChange **changes, |
da6053d0 | 750 | size_t *n_changes) { |
83096483 | 751 | |
254d1313 | 752 | _cleanup_close_ int fd = -EBADF; |
0ec0deaa | 753 | bool restart; |
d25e100b | 754 | int r = 0; |
83096483 LP |
755 | |
756 | assert(config_path); | |
401017e0 | 757 | assert(lp); |
83096483 LP |
758 | |
759 | if (set_size(remove_symlinks_to) <= 0) | |
760 | return 0; | |
761 | ||
67852d08 | 762 | fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC); |
83096483 | 763 | if (fd < 0) |
32d9493e | 764 | return errno == ENOENT ? 0 : -errno; |
83096483 LP |
765 | |
766 | do { | |
767 | int q, cfd; | |
0ec0deaa | 768 | restart = false; |
83096483 | 769 | |
ead34950 | 770 | cfd = fcntl(fd, F_DUPFD_CLOEXEC, 3); |
d25e100b LP |
771 | if (cfd < 0) |
772 | return -errno; | |
83096483 LP |
773 | |
774 | /* This takes possession of cfd and closes it */ | |
3b3557c4 | 775 | q = remove_marked_symlinks_fd(remove_symlinks_to, cfd, config_path, config_path, lp, dry_run, &restart, changes, n_changes); |
83096483 LP |
776 | if (r == 0) |
777 | r = q; | |
0ec0deaa | 778 | } while (restart); |
83096483 | 779 | |
83096483 LP |
780 | return r; |
781 | } | |
782 | ||
0047d54d | 783 | static int is_symlink_with_known_name(const InstallInfo *i, const char *name) { |
5cd8ae31 ZJS |
784 | int r; |
785 | ||
786 | if (streq(name, i->name)) | |
787 | return true; | |
788 | ||
789 | if (strv_contains(i->aliases, name)) | |
790 | return true; | |
791 | ||
792 | /* Look for template symlink matching DefaultInstance */ | |
793 | if (i->default_instance && unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE)) { | |
794 | _cleanup_free_ char *s = NULL; | |
795 | ||
796 | r = unit_name_replace_instance(i->name, i->default_instance, &s); | |
797 | if (r < 0) { | |
798 | if (r != -EINVAL) | |
799 | return r; | |
800 | ||
801 | } else if (streq(name, s)) | |
802 | return true; | |
803 | } | |
804 | ||
805 | return false; | |
806 | } | |
807 | ||
43b4e305 MS |
808 | static int find_symlinks_in_directory( |
809 | DIR *dir, | |
810 | const char *dir_path, | |
0ec0deaa | 811 | const char *root_dir, |
0047d54d | 812 | const InstallInfo *info, |
466f6979 ZJS |
813 | bool ignore_destination, |
814 | bool match_name, | |
4b37c89f | 815 | bool ignore_same_name, |
83096483 LP |
816 | const char *config_path, |
817 | bool *same_name_link) { | |
818 | ||
d25e100b | 819 | int r = 0; |
83096483 | 820 | |
43b4e305 | 821 | FOREACH_DIRENT(de, dir, return -errno) { |
466f6979 | 822 | bool found_path = false, found_dest = false, b = false; |
43b4e305 | 823 | int q; |
83096483 | 824 | |
43b4e305 MS |
825 | if (de->d_type != DT_LNK) |
826 | continue; | |
83096483 | 827 | |
466f6979 ZJS |
828 | if (!ignore_destination) { |
829 | _cleanup_free_ char *dest = NULL; | |
830 | ||
831 | /* Acquire symlink destination */ | |
832 | q = readlinkat_malloc(dirfd(dir), de->d_name, &dest); | |
833 | if (q == -ENOENT) | |
834 | continue; | |
835 | if (q < 0) { | |
836 | if (r == 0) | |
837 | r = q; | |
838 | continue; | |
839 | } | |
83096483 | 840 | |
466f6979 ZJS |
841 | /* Make absolute */ |
842 | if (!path_is_absolute(dest)) { | |
843 | char *x; | |
83096483 | 844 | |
466f6979 ZJS |
845 | x = path_join(dir_path, dest); |
846 | if (!x) | |
847 | return -ENOMEM; | |
83096483 | 848 | |
466f6979 ZJS |
849 | free_and_replace(dest, x); |
850 | } | |
851 | ||
852 | /* Check if what the symlink points to matches what we are looking for */ | |
853 | found_dest = streq(basename(dest), info->name); | |
43b4e305 | 854 | } |
83096483 | 855 | |
4a84db4c | 856 | assert(unit_name_is_valid(info->name, UNIT_NAME_ANY)); |
0ec0deaa | 857 | |
466f6979 ZJS |
858 | /* Check if the symlink itself matches what we are looking for. |
859 | * | |
860 | * If ignore_destination is specified, we only look at the source name. | |
861 | * | |
862 | * If ignore_same_name is specified, we are in one of the directories which | |
863 | * have lower priority than the unit file, and even if a file or symlink with | |
864 | * this name was found, we should ignore it. */ | |
865 | ||
866 | if (ignore_destination || !ignore_same_name) | |
867 | found_path = streq(de->d_name, info->name); | |
868 | ||
869 | if (!found_path && ignore_destination) { | |
870 | _cleanup_free_ char *template = NULL; | |
871 | ||
872 | q = unit_name_template(de->d_name, &template); | |
873 | if (q < 0 && q != -EINVAL) | |
874 | return q; | |
875 | if (q >= 0) | |
876 | found_dest = streq(template, info->name); | |
877 | } | |
0ec0deaa | 878 | |
43b4e305 MS |
879 | if (found_path && found_dest) { |
880 | _cleanup_free_ char *p = NULL, *t = NULL; | |
0ec0deaa | 881 | |
466f6979 | 882 | /* Filter out same name links in the main config path */ |
43b4e305 | 883 | p = path_make_absolute(de->d_name, dir_path); |
4a84db4c | 884 | t = path_make_absolute(info->name, config_path); |
83096483 | 885 | |
43b4e305 MS |
886 | if (!p || !t) |
887 | return -ENOMEM; | |
83096483 | 888 | |
43b4e305 MS |
889 | b = path_equal(p, t); |
890 | } | |
83096483 | 891 | |
43b4e305 MS |
892 | if (b) |
893 | *same_name_link = true; | |
894 | else if (found_path || found_dest) { | |
466f6979 | 895 | if (!match_name) |
43b4e305 | 896 | return 1; |
83096483 | 897 | |
43b4e305 | 898 | /* Check if symlink name is in the set of names used by [Install] */ |
4a84db4c | 899 | q = is_symlink_with_known_name(info, de->d_name); |
43b4e305 MS |
900 | if (q < 0) |
901 | return q; | |
902 | if (q > 0) | |
903 | return 1; | |
83096483 LP |
904 | } |
905 | } | |
d25e100b LP |
906 | |
907 | return r; | |
83096483 LP |
908 | } |
909 | ||
910 | static int find_symlinks( | |
0ec0deaa | 911 | const char *root_dir, |
0047d54d | 912 | const InstallInfo *i, |
d9b4b48f | 913 | bool match_name, |
4b37c89f | 914 | bool ignore_same_name, |
83096483 LP |
915 | const char *config_path, |
916 | bool *same_name_link) { | |
917 | ||
43b4e305 | 918 | _cleanup_closedir_ DIR *config_dir = NULL; |
43b4e305 | 919 | int r = 0; |
83096483 | 920 | |
5cd8ae31 | 921 | assert(i); |
83096483 LP |
922 | assert(config_path); |
923 | assert(same_name_link); | |
924 | ||
43b4e305 MS |
925 | config_dir = opendir(config_path); |
926 | if (!config_dir) { | |
a1feacf7 | 927 | if (IN_SET(errno, ENOENT, ENOTDIR, EACCES)) |
d5891fda | 928 | return 0; |
83096483 | 929 | return -errno; |
d5891fda | 930 | } |
83096483 | 931 | |
43b4e305 MS |
932 | FOREACH_DIRENT(de, config_dir, return -errno) { |
933 | const char *suffix; | |
934 | _cleanup_free_ const char *path = NULL; | |
935 | _cleanup_closedir_ DIR *d = NULL; | |
936 | ||
43b4e305 MS |
937 | if (de->d_type != DT_DIR) |
938 | continue; | |
939 | ||
940 | suffix = strrchr(de->d_name, '.'); | |
941 | if (!STRPTR_IN_SET(suffix, ".wants", ".requires")) | |
942 | continue; | |
943 | ||
944 | path = path_join(config_path, de->d_name); | |
945 | if (!path) | |
946 | return -ENOMEM; | |
947 | ||
948 | d = opendir(path); | |
949 | if (!d) { | |
e75a26d0 | 950 | log_error_errno(errno, "Failed to open directory \"%s\" while scanning for symlinks, ignoring: %m", path); |
43b4e305 MS |
951 | continue; |
952 | } | |
953 | ||
466f6979 ZJS |
954 | r = find_symlinks_in_directory(d, path, root_dir, i, |
955 | /* ignore_destination= */ true, | |
956 | /* match_name= */ match_name, | |
957 | /* ignore_same_name= */ ignore_same_name, | |
958 | config_path, | |
959 | same_name_link); | |
43b4e305 MS |
960 | if (r > 0) |
961 | return 1; | |
962 | else if (r < 0) | |
e75a26d0 | 963 | log_debug_errno(r, "Failed to look up symlinks in \"%s\": %m", path); |
43b4e305 MS |
964 | } |
965 | ||
966 | /* We didn't find any suitable symlinks in .wants or .requires directories, let's look for linked unit files in this directory. */ | |
967 | rewinddir(config_dir); | |
466f6979 ZJS |
968 | return find_symlinks_in_directory(config_dir, config_path, root_dir, i, |
969 | /* ignore_destination= */ false, | |
970 | /* match_name= */ match_name, | |
971 | /* ignore_same_name= */ ignore_same_name, | |
972 | config_path, | |
973 | same_name_link); | |
83096483 LP |
974 | } |
975 | ||
976 | static int find_symlinks_in_scope( | |
4870133b | 977 | RuntimeScope scope, |
c3e7fba0 | 978 | const LookupPaths *lp, |
0047d54d | 979 | const InstallInfo *info, |
d9b4b48f | 980 | bool match_name, |
83096483 LP |
981 | UnitFileState *state) { |
982 | ||
dfead90d LP |
983 | bool same_name_link_runtime = false, same_name_link_config = false; |
984 | bool enabled_in_runtime = false, enabled_at_all = false; | |
4b37c89f | 985 | bool ignore_same_name = false; |
0ec0deaa | 986 | int r; |
83096483 | 987 | |
c3e7fba0 | 988 | assert(lp); |
4a84db4c | 989 | assert(info); |
83096483 | 990 | |
c3e7fba0 | 991 | /* As we iterate over the list of search paths in lp->search_path, we may encounter "same name" |
4b37c89f | 992 | * symlinks. The ones which are "below" (i.e. have lower priority) than the unit file itself are |
5238e957 | 993 | * effectively masked, so we should ignore them. */ |
4b37c89f | 994 | |
c3e7fba0 | 995 | STRV_FOREACH(p, lp->search_path) { |
dfead90d LP |
996 | bool same_name_link = false; |
997 | ||
4a84db4c | 998 | r = find_symlinks(lp->root_dir, info, match_name, ignore_same_name, *p, &same_name_link); |
dfead90d LP |
999 | if (r < 0) |
1000 | return r; | |
1001 | if (r > 0) { | |
1002 | /* We found symlinks in this dir? Yay! Let's see where precisely it is enabled. */ | |
1003 | ||
c3e7fba0 | 1004 | if (path_equal_ptr(*p, lp->persistent_config)) { |
dfead90d LP |
1005 | /* This is the best outcome, let's return it immediately. */ |
1006 | *state = UNIT_FILE_ENABLED; | |
1007 | return 1; | |
1008 | } | |
1009 | ||
bb2682bc | 1010 | /* look for global enablement of user units */ |
4870133b | 1011 | if (scope == RUNTIME_SCOPE_USER && path_is_user_config_dir(*p)) { |
d2561cfd ZJS |
1012 | *state = UNIT_FILE_ENABLED; |
1013 | return 1; | |
1014 | } | |
1015 | ||
c3e7fba0 | 1016 | r = path_is_runtime(lp, *p, false); |
dfead90d LP |
1017 | if (r < 0) |
1018 | return r; | |
1019 | if (r > 0) | |
1020 | enabled_in_runtime = true; | |
1021 | else | |
1022 | enabled_at_all = true; | |
1023 | ||
1024 | } else if (same_name_link) { | |
c3e7fba0 | 1025 | if (path_equal_ptr(*p, lp->persistent_config)) |
dfead90d LP |
1026 | same_name_link_config = true; |
1027 | else { | |
c3e7fba0 | 1028 | r = path_is_runtime(lp, *p, false); |
dfead90d LP |
1029 | if (r < 0) |
1030 | return r; | |
1031 | if (r > 0) | |
1032 | same_name_link_runtime = true; | |
1033 | } | |
1034 | } | |
4b37c89f ZJS |
1035 | |
1036 | /* Check if next iteration will be "below" the unit file (either a regular file | |
1037 | * or a symlink), and hence should be ignored */ | |
4a84db4c | 1038 | if (!ignore_same_name && path_startswith(info->path, *p)) |
4b37c89f | 1039 | ignore_same_name = true; |
83096483 LP |
1040 | } |
1041 | ||
dfead90d | 1042 | if (enabled_in_runtime) { |
0ec0deaa | 1043 | *state = UNIT_FILE_ENABLED_RUNTIME; |
dfead90d LP |
1044 | return 1; |
1045 | } | |
1046 | ||
1047 | /* Here's a special rule: if the unit we are looking for is an instance, and it symlinked in the search path | |
1048 | * outside of runtime and configuration directory, then we consider it statically enabled. Note we do that only | |
1049 | * for instance, not for regular names, as those are merely aliases, while instances explicitly instantiate | |
1050 | * something, and hence are a much stronger concept. */ | |
4a84db4c | 1051 | if (enabled_at_all && unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { |
dfead90d LP |
1052 | *state = UNIT_FILE_STATIC; |
1053 | return 1; | |
83096483 LP |
1054 | } |
1055 | ||
1056 | /* Hmm, we didn't find it, but maybe we found the same name | |
1057 | * link? */ | |
dfead90d | 1058 | if (same_name_link_config) { |
0ec0deaa LP |
1059 | *state = UNIT_FILE_LINKED; |
1060 | return 1; | |
1061 | } | |
83096483 LP |
1062 | if (same_name_link_runtime) { |
1063 | *state = UNIT_FILE_LINKED_RUNTIME; | |
1064 | return 1; | |
83096483 LP |
1065 | } |
1066 | ||
1067 | return 0; | |
1068 | } | |
1069 | ||
acb5b834 | 1070 | static void install_info_clear(InstallInfo *i) { |
0ec0deaa LP |
1071 | if (!i) |
1072 | return; | |
83096483 | 1073 | |
acb5b834 ZJS |
1074 | i->name = mfree(i->name); |
1075 | i->path = mfree(i->path); | |
1076 | i->root = mfree(i->root); | |
1077 | i->aliases = strv_free(i->aliases); | |
1078 | i->wanted_by = strv_free(i->wanted_by); | |
1079 | i->required_by = strv_free(i->required_by); | |
1080 | i->also = strv_free(i->also); | |
1081 | i->default_instance = mfree(i->default_instance); | |
1082 | i->symlink_target = mfree(i->symlink_target); | |
0ec0deaa | 1083 | } |
83096483 | 1084 | |
acb5b834 ZJS |
1085 | static InstallInfo* install_info_free(InstallInfo *i) { |
1086 | install_info_clear(i); | |
1087 | return mfree(i); | |
1088 | } | |
1089 | ||
1090 | DEFINE_TRIVIAL_CLEANUP_FUNC(InstallInfo*, install_info_free); | |
1091 | ||
4a84db4c ZJS |
1092 | static void install_context_done(InstallContext *ctx) { |
1093 | assert(ctx); | |
83096483 | 1094 | |
4a84db4c ZJS |
1095 | ctx->will_process = ordered_hashmap_free_with_destructor(ctx->will_process, install_info_free); |
1096 | ctx->have_processed = ordered_hashmap_free_with_destructor(ctx->have_processed, install_info_free); | |
0ec0deaa | 1097 | } |
83096483 | 1098 | |
0047d54d ZJS |
1099 | static InstallInfo *install_info_find(InstallContext *ctx, const char *name) { |
1100 | InstallInfo *i; | |
83096483 | 1101 | |
4a84db4c | 1102 | i = ordered_hashmap_get(ctx->have_processed, name); |
0ec0deaa LP |
1103 | if (i) |
1104 | return i; | |
83096483 | 1105 | |
4a84db4c | 1106 | return ordered_hashmap_get(ctx->will_process, name); |
83096483 LP |
1107 | } |
1108 | ||
af3d8113 | 1109 | static int install_info_may_process( |
0047d54d | 1110 | const InstallInfo *i, |
c3e7fba0 | 1111 | const LookupPaths *lp, |
cd44ec5a | 1112 | InstallChange **changes, |
da6053d0 | 1113 | size_t *n_changes) { |
76adb5b8 | 1114 | assert(i); |
c3e7fba0 | 1115 | assert(lp); |
76adb5b8 | 1116 | |
047d91f9 ZJS |
1117 | /* Checks whether the loaded unit file is one we should process, or is masked, |
1118 | * transient or generated and thus not subject to enable/disable operations. */ | |
76adb5b8 | 1119 | |
94e7298d ZJS |
1120 | if (i->install_mode == INSTALL_MODE_MASKED) |
1121 | return install_changes_add(changes, n_changes, -ERFKILL, i->path, NULL); | |
c3e7fba0 | 1122 | if (path_is_generator(lp, i->path) || |
94e7298d ZJS |
1123 | path_is_transient(lp, i->path)) |
1124 | return install_changes_add(changes, n_changes, -EADDRNOTAVAIL, i->path, NULL); | |
76adb5b8 LP |
1125 | |
1126 | return 0; | |
1127 | } | |
1128 | ||
ff56349d | 1129 | /** |
0047d54d | 1130 | * Adds a new InstallInfo entry under name in the InstallContext.will_process |
ff56349d | 1131 | * hashmap, or retrieves the existing one if already present. |
19539807 ZJS |
1132 | * |
1133 | * Returns negative on error, 0 if the unit was already known, 1 otherwise. | |
ff56349d | 1134 | */ |
83096483 | 1135 | static int install_info_add( |
4a84db4c | 1136 | InstallContext *ctx, |
83096483 | 1137 | const char *name, |
0ec0deaa | 1138 | const char *path, |
de61a04b | 1139 | const char *root, |
19539807 | 1140 | bool auxiliary, |
0047d54d | 1141 | InstallInfo **ret) { |
0ec0deaa | 1142 | |
83096483 LP |
1143 | int r; |
1144 | ||
4a84db4c | 1145 | assert(ctx); |
83096483 | 1146 | |
08f46856 BR |
1147 | if (!name) { |
1148 | /* 'name' and 'path' must not both be null. Check here 'path' using assert_se() to | |
1149 | * workaround a bug in gcc that generates a -Wnonnull warning when calling basename(), | |
1150 | * but this cannot be possible in any code path (See #6119). */ | |
1151 | assert_se(path); | |
2b6bf07d | 1152 | name = basename(path); |
08f46856 | 1153 | } |
83096483 | 1154 | |
7410616c | 1155 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
83096483 LP |
1156 | return -EINVAL; |
1157 | ||
acb5b834 | 1158 | InstallInfo *i = install_info_find(ctx, name); |
0ec0deaa | 1159 | if (i) { |
19539807 ZJS |
1160 | i->auxiliary = i->auxiliary && auxiliary; |
1161 | ||
0ec0deaa LP |
1162 | if (ret) |
1163 | *ret = i; | |
83096483 | 1164 | return 0; |
0ec0deaa | 1165 | } |
83096483 | 1166 | |
acb5b834 ZJS |
1167 | _cleanup_(install_info_freep) InstallInfo *alloc = new(InstallInfo, 1); |
1168 | if (!alloc) | |
83096483 | 1169 | return -ENOMEM; |
d23aeead | 1170 | |
acb5b834 | 1171 | *alloc = (InstallInfo) { |
91810c8f | 1172 | .install_mode = _INSTALL_MODE_INVALID, |
d23aeead LP |
1173 | .auxiliary = auxiliary, |
1174 | }; | |
83096483 | 1175 | |
acb5b834 ZJS |
1176 | alloc->name = strdup(name); |
1177 | if (!alloc->name) | |
1178 | return -ENOMEM; | |
83096483 | 1179 | |
de61a04b | 1180 | if (root) { |
acb5b834 ZJS |
1181 | alloc->root = strdup(root); |
1182 | if (!alloc->root) | |
1183 | return -ENOMEM; | |
de61a04b LP |
1184 | } |
1185 | ||
83096483 | 1186 | if (path) { |
acb5b834 ZJS |
1187 | alloc->path = strdup(path); |
1188 | if (!alloc->path) | |
1189 | return -ENOMEM; | |
83096483 LP |
1190 | } |
1191 | ||
acb5b834 | 1192 | r = ordered_hashmap_ensure_put(&ctx->will_process, &string_hash_ops, alloc->name, alloc); |
83096483 | 1193 | if (r < 0) |
acb5b834 ZJS |
1194 | return r; |
1195 | i = TAKE_PTR(alloc); | |
83096483 | 1196 | |
0ec0deaa LP |
1197 | if (ret) |
1198 | *ret = i; | |
19539807 | 1199 | return 1; |
83096483 LP |
1200 | } |
1201 | ||
a7724589 ZJS |
1202 | static int config_parse_alias( |
1203 | const char *unit, | |
1204 | const char *filename, | |
1205 | unsigned line, | |
1206 | const char *section, | |
1207 | unsigned section_line, | |
1208 | const char *lvalue, | |
1209 | int ltype, | |
1210 | const char *rvalue, | |
1211 | void *data, | |
1212 | void *userdata) { | |
1213 | ||
a7724589 ZJS |
1214 | UnitType type; |
1215 | ||
142468d8 | 1216 | assert(unit); |
a7724589 ZJS |
1217 | assert(filename); |
1218 | assert(lvalue); | |
1219 | assert(rvalue); | |
1220 | ||
142468d8 | 1221 | type = unit_name_to_type(unit); |
a7724589 ZJS |
1222 | if (!unit_type_may_alias(type)) |
1223 | return log_syntax(unit, LOG_WARNING, filename, line, 0, | |
3b8769bd | 1224 | "Alias= is not allowed for %s units, ignoring.", |
a7724589 ZJS |
1225 | unit_type_to_string(type)); |
1226 | ||
1227 | return config_parse_strv(unit, filename, line, section, section_line, | |
1228 | lvalue, ltype, rvalue, data, userdata); | |
1229 | } | |
1230 | ||
d54c4993 LP |
1231 | static int config_parse_also( |
1232 | const char *unit, | |
1233 | const char *filename, | |
1234 | unsigned line, | |
1235 | const char *section, | |
1236 | unsigned section_line, | |
1237 | const char *lvalue, | |
1238 | int ltype, | |
1239 | const char *rvalue, | |
1240 | void *data, | |
1241 | void *userdata) { | |
83096483 | 1242 | |
0047d54d | 1243 | InstallInfo *info = ASSERT_PTR(userdata); |
4a84db4c | 1244 | InstallContext *ctx = ASSERT_PTR(data); |
0ec0deaa | 1245 | int r; |
83096483 | 1246 | |
142468d8 | 1247 | assert(unit); |
83096483 LP |
1248 | assert(filename); |
1249 | assert(lvalue); | |
1250 | assert(rvalue); | |
1251 | ||
0ec0deaa | 1252 | for (;;) { |
a6612e65 | 1253 | _cleanup_free_ char *word = NULL, *printed = NULL; |
03da6513 | 1254 | |
0ec0deaa LP |
1255 | r = extract_first_word(&rvalue, &word, NULL, 0); |
1256 | if (r < 0) | |
1257 | return r; | |
03da6513 SS |
1258 | if (r == 0) |
1259 | break; | |
83096483 | 1260 | |
38e8a6c7 | 1261 | r = install_name_printf(ctx->scope, info, word, &printed); |
d9e5e694 | 1262 | if (r < 0) |
6ec4c852 ZJS |
1263 | return log_syntax(unit, LOG_WARNING, filename, line, r, |
1264 | "Failed to resolve unit name in Also=\"%s\": %m", word); | |
aedd4012 | 1265 | |
4a84db4c | 1266 | r = install_info_add(ctx, printed, NULL, info->root, /* auxiliary= */ true, NULL); |
d9e5e694 | 1267 | if (r < 0) |
83096483 | 1268 | return r; |
aedd4012 | 1269 | |
a6612e65 | 1270 | r = strv_push(&info->also, printed); |
aedd4012 JS |
1271 | if (r < 0) |
1272 | return r; | |
0ec0deaa | 1273 | |
a6612e65 | 1274 | printed = NULL; |
83096483 LP |
1275 | } |
1276 | ||
1277 | return 0; | |
1278 | } | |
1279 | ||
d54c4993 LP |
1280 | static int config_parse_default_instance( |
1281 | const char *unit, | |
1282 | const char *filename, | |
1283 | unsigned line, | |
1284 | const char *section, | |
1285 | unsigned section_line, | |
1286 | const char *lvalue, | |
1287 | int ltype, | |
1288 | const char *rvalue, | |
1289 | void *data, | |
1290 | void *userdata) { | |
1291 | ||
172e9cc3 | 1292 | InstallContext *ctx = ASSERT_PTR(data); |
0047d54d | 1293 | InstallInfo *info = ASSERT_PTR(userdata); |
d7604756 | 1294 | _cleanup_free_ char *printed = NULL; |
d54c4993 LP |
1295 | int r; |
1296 | ||
142468d8 | 1297 | assert(unit); |
d54c4993 LP |
1298 | assert(filename); |
1299 | assert(lvalue); | |
1300 | assert(rvalue); | |
1301 | ||
142468d8 | 1302 | if (unit_name_is_valid(unit, UNIT_NAME_INSTANCE)) |
6597fa61 ZJS |
1303 | /* When enabling an instance, we might be using a template unit file, |
1304 | * but we should ignore DefaultInstance silently. */ | |
1305 | return 0; | |
142468d8 | 1306 | if (!unit_name_is_valid(unit, UNIT_NAME_TEMPLATE)) |
6597fa61 | 1307 | return log_syntax(unit, LOG_WARNING, filename, line, 0, |
10d67460 | 1308 | "DefaultInstance= only makes sense for template units, ignoring."); |
6597fa61 | 1309 | |
38e8a6c7 | 1310 | r = install_name_printf(ctx->scope, info, rvalue, &printed); |
d54c4993 | 1311 | if (r < 0) |
6ec4c852 ZJS |
1312 | return log_syntax(unit, LOG_WARNING, filename, line, r, |
1313 | "Failed to resolve instance name in DefaultInstance=\"%s\": %m", rvalue); | |
d54c4993 | 1314 | |
6ec4c852 ZJS |
1315 | if (isempty(printed)) |
1316 | printed = mfree(printed); | |
b5395600 | 1317 | |
6ec4c852 | 1318 | if (printed && !unit_instance_is_valid(printed)) |
e5171296 ZJS |
1319 | return log_syntax(unit, LOG_WARNING, filename, line, SYNTHETIC_ERRNO(EINVAL), |
1320 | "Invalid DefaultInstance= value \"%s\".", printed); | |
d54c4993 | 1321 | |
4a84db4c | 1322 | return free_and_replace(info->default_instance, printed); |
d54c4993 LP |
1323 | } |
1324 | ||
83096483 | 1325 | static int unit_file_load( |
4a84db4c | 1326 | InstallContext *ctx, |
0047d54d | 1327 | InstallInfo *info, |
83096483 | 1328 | const char *path, |
d04a9386 | 1329 | const char *root_dir, |
0ec0deaa | 1330 | SearchFlags flags) { |
83096483 | 1331 | |
f975e971 | 1332 | const ConfigTableItem items[] = { |
a7724589 | 1333 | { "Install", "Alias", config_parse_alias, 0, &info->aliases }, |
d54c4993 LP |
1334 | { "Install", "WantedBy", config_parse_strv, 0, &info->wanted_by }, |
1335 | { "Install", "RequiredBy", config_parse_strv, 0, &info->required_by }, | |
1336 | { "Install", "DefaultInstance", config_parse_default_instance, 0, info }, | |
4a84db4c | 1337 | { "Install", "Also", config_parse_also, 0, ctx }, |
d54c4993 | 1338 | {} |
83096483 LP |
1339 | }; |
1340 | ||
133e5b36 | 1341 | UnitType type; |
7fd1b19b | 1342 | _cleanup_fclose_ FILE *f = NULL; |
254d1313 | 1343 | _cleanup_close_ int fd = -EBADF; |
0ec0deaa LP |
1344 | struct stat st; |
1345 | int r; | |
83096483 | 1346 | |
83096483 LP |
1347 | assert(info); |
1348 | assert(path); | |
1349 | ||
d04a9386 LP |
1350 | if (!(flags & SEARCH_DROPIN)) { |
1351 | /* Loading or checking for the main unit file… */ | |
133e5b36 | 1352 | |
d04a9386 LP |
1353 | type = unit_name_to_type(info->name); |
1354 | if (type < 0) | |
1355 | return -EINVAL; | |
baaa35ad ZJS |
1356 | if (unit_name_is_valid(info->name, UNIT_NAME_TEMPLATE|UNIT_NAME_INSTANCE) && !unit_type_may_template(type)) |
1357 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
bce84e10 | 1358 | "%s: unit type %s cannot be templated, ignoring.", path, unit_type_to_string(type)); |
d04a9386 LP |
1359 | |
1360 | if (!(flags & SEARCH_LOAD)) { | |
4276749d | 1361 | if (lstat(path, &st) < 0) |
d04a9386 LP |
1362 | return -errno; |
1363 | ||
1364 | if (null_or_empty(&st)) | |
91810c8f | 1365 | info->install_mode = INSTALL_MODE_MASKED; |
d04a9386 | 1366 | else if (S_ISREG(st.st_mode)) |
91810c8f | 1367 | info->install_mode = INSTALL_MODE_REGULAR; |
d04a9386 LP |
1368 | else if (S_ISLNK(st.st_mode)) |
1369 | return -ELOOP; | |
1370 | else if (S_ISDIR(st.st_mode)) | |
1371 | return -EISDIR; | |
1372 | else | |
1373 | return -ENOTTY; | |
1374 | ||
1375 | return 0; | |
1376 | } | |
1377 | ||
1378 | fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW); | |
1379 | if (fd < 0) | |
d25e100b | 1380 | return -errno; |
d04a9386 LP |
1381 | } else { |
1382 | /* 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 | 1383 | |
d04a9386 LP |
1384 | if (!(flags & SEARCH_LOAD)) |
1385 | return 0; | |
0ec0deaa | 1386 | |
f461a28d | 1387 | fd = chase_and_open(path, root_dir, 0, O_RDONLY|O_CLOEXEC|O_NOCTTY, NULL); |
d04a9386 LP |
1388 | if (fd < 0) |
1389 | return fd; | |
e94937df LN |
1390 | } |
1391 | ||
0ec0deaa LP |
1392 | if (fstat(fd, &st) < 0) |
1393 | return -errno; | |
d04a9386 | 1394 | |
0ec0deaa | 1395 | if (null_or_empty(&st)) { |
d04a9386 | 1396 | if ((flags & SEARCH_DROPIN) == 0) |
91810c8f | 1397 | info->install_mode = INSTALL_MODE_MASKED; |
d04a9386 | 1398 | |
0ec0deaa LP |
1399 | return 0; |
1400 | } | |
3cc44114 LP |
1401 | |
1402 | r = stat_verify_regular(&st); | |
1403 | if (r < 0) | |
1404 | return r; | |
83096483 | 1405 | |
4fa744a3 | 1406 | f = take_fdopen(&fd, "r"); |
0ec0deaa LP |
1407 | if (!f) |
1408 | return -errno; | |
83096483 | 1409 | |
4a84db4c ZJS |
1410 | /* ctx is only needed if we actually load the file (it's referenced from items[] btw, in case you wonder.) */ |
1411 | assert(ctx); | |
d04a9386 | 1412 | |
142468d8 | 1413 | r = config_parse(info->name, path, f, |
f4331d0d ZJS |
1414 | "Install\0" |
1415 | "-Unit\0" | |
1416 | "-Automount\0" | |
1417 | "-Device\0" | |
1418 | "-Mount\0" | |
1419 | "-Path\0" | |
1420 | "-Scope\0" | |
1421 | "-Service\0" | |
1422 | "-Slice\0" | |
1423 | "-Socket\0" | |
1424 | "-Swap\0" | |
1425 | "-Target\0" | |
1426 | "-Timer\0", | |
36f822c4 | 1427 | config_item_table_lookup, items, |
7ade8982 | 1428 | 0, info, |
4f9ff96a | 1429 | NULL); |
83096483 | 1430 | if (r < 0) |
e75a26d0 | 1431 | return log_debug_errno(r, "Failed to parse \"%s\": %m", info->name); |
83096483 | 1432 | |
d04a9386 | 1433 | if ((flags & SEARCH_DROPIN) == 0) |
91810c8f | 1434 | info->install_mode = INSTALL_MODE_REGULAR; |
aedd4012 | 1435 | |
78d54bd4 | 1436 | return |
693eb9a2 LP |
1437 | (int) strv_length(info->aliases) + |
1438 | (int) strv_length(info->wanted_by) + | |
1439 | (int) strv_length(info->required_by); | |
83096483 LP |
1440 | } |
1441 | ||
0ec0deaa | 1442 | static int unit_file_load_or_readlink( |
4a84db4c | 1443 | InstallContext *ctx, |
0047d54d | 1444 | InstallInfo *info, |
0ec0deaa | 1445 | const char *path, |
c3e7fba0 | 1446 | const LookupPaths *lp, |
0ec0deaa | 1447 | SearchFlags flags) { |
0ec0deaa LP |
1448 | int r; |
1449 | ||
4a84db4c | 1450 | r = unit_file_load(ctx, info, path, lp->root_dir, flags); |
d04a9386 | 1451 | if (r != -ELOOP || (flags & SEARCH_DROPIN)) |
0ec0deaa LP |
1452 | return r; |
1453 | ||
047d37dc ZJS |
1454 | /* This is a symlink, let's read and verify it. */ |
1455 | r = unit_file_resolve_symlink(lp->root_dir, lp->search_path, | |
1456 | NULL, AT_FDCWD, path, | |
1457 | true, &info->symlink_target); | |
1458 | if (r < 0) | |
1459 | return r; | |
48ed75ad | 1460 | bool outside_search_path = r > 0; |
4276749d | 1461 | |
047d37dc ZJS |
1462 | r = null_or_empty_path_with_root(info->symlink_target, lp->root_dir); |
1463 | if (r < 0 && r != -ENOENT) | |
1464 | return log_debug_errno(r, "Failed to stat %s: %m", info->symlink_target); | |
1465 | if (r > 0) | |
91810c8f | 1466 | info->install_mode = INSTALL_MODE_MASKED; |
48ed75ad | 1467 | else if (outside_search_path) |
91810c8f | 1468 | info->install_mode = INSTALL_MODE_LINKED; |
047d37dc | 1469 | else |
91810c8f | 1470 | info->install_mode = INSTALL_MODE_ALIAS; |
0ec0deaa LP |
1471 | |
1472 | return 0; | |
1473 | } | |
1474 | ||
83096483 | 1475 | static int unit_file_search( |
4a84db4c | 1476 | InstallContext *ctx, |
0047d54d | 1477 | InstallInfo *info, |
c3e7fba0 | 1478 | const LookupPaths *lp, |
0ec0deaa | 1479 | SearchFlags flags) { |
83096483 | 1480 | |
d04a9386 LP |
1481 | const char *dropin_dir_name = NULL, *dropin_template_dir_name = NULL; |
1482 | _cleanup_strv_free_ char **dirs = NULL, **files = NULL; | |
64f9280e | 1483 | _cleanup_free_ char *template = NULL; |
142468d8 | 1484 | bool found_unit = false; |
d04a9386 | 1485 | int r, result; |
83096483 | 1486 | |
83096483 | 1487 | assert(info); |
c3e7fba0 | 1488 | assert(lp); |
83096483 | 1489 | |
0ec0deaa | 1490 | /* Was this unit already loaded? */ |
91810c8f | 1491 | if (info->install_mode != _INSTALL_MODE_INVALID) |
0ec0deaa LP |
1492 | return 0; |
1493 | ||
278fa575 | 1494 | if (info->path) |
4a84db4c | 1495 | return unit_file_load_or_readlink(ctx, info, info->path, lp, flags); |
83096483 LP |
1496 | |
1497 | assert(info->name); | |
1498 | ||
142468d8 JL |
1499 | if (unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { |
1500 | r = unit_name_template(info->name, &template); | |
1501 | if (r < 0) | |
1502 | return r; | |
1503 | } | |
1504 | ||
c3e7fba0 | 1505 | STRV_FOREACH(p, lp->search_path) { |
e50bd775 | 1506 | _cleanup_free_ char *path = NULL; |
83096483 | 1507 | |
657ee2d8 | 1508 | path = path_join(*p, info->name); |
83096483 LP |
1509 | if (!path) |
1510 | return -ENOMEM; | |
1511 | ||
4a84db4c | 1512 | r = unit_file_load_or_readlink(ctx, info, path, lp, flags); |
0155928c | 1513 | if (r >= 0) { |
ae2a15bc | 1514 | info->path = TAKE_PTR(path); |
142468d8 JL |
1515 | result = r; |
1516 | found_unit = true; | |
1517 | break; | |
a1feacf7 | 1518 | } else if (!IN_SET(r, -ENOENT, -ENOTDIR, -EACCES)) |
0155928c | 1519 | return r; |
e50bd775 | 1520 | } |
62b00233 | 1521 | |
142468d8 JL |
1522 | if (!found_unit && template) { |
1523 | ||
e50bd775 LP |
1524 | /* Unit file doesn't exist, however instance |
1525 | * enablement was requested. We will check if it is | |
1526 | * possible to load template unit file. */ | |
29283ea4 | 1527 | |
c3e7fba0 | 1528 | STRV_FOREACH(p, lp->search_path) { |
e50bd775 LP |
1529 | _cleanup_free_ char *path = NULL; |
1530 | ||
657ee2d8 | 1531 | path = path_join(*p, template); |
62b00233 ZJS |
1532 | if (!path) |
1533 | return -ENOMEM; | |
29283ea4 | 1534 | |
4a84db4c | 1535 | r = unit_file_load_or_readlink(ctx, info, path, lp, flags); |
0155928c | 1536 | if (r >= 0) { |
ae2a15bc | 1537 | info->path = TAKE_PTR(path); |
142468d8 JL |
1538 | result = r; |
1539 | found_unit = true; | |
1540 | break; | |
a1feacf7 | 1541 | } else if (!IN_SET(r, -ENOENT, -ENOTDIR, -EACCES)) |
0155928c | 1542 | return r; |
29283ea4 | 1543 | } |
83096483 LP |
1544 | } |
1545 | ||
baaa35ad ZJS |
1546 | if (!found_unit) |
1547 | return log_debug_errno(SYNTHETIC_ERRNO(ENOENT), | |
1548 | "Cannot find unit %s%s%s.", | |
1549 | info->name, template ? " or " : "", strempty(template)); | |
142468d8 | 1550 | |
91810c8f | 1551 | if (info->install_mode == INSTALL_MODE_MASKED) |
9639b175 FB |
1552 | return result; |
1553 | ||
142468d8 JL |
1554 | /* Search for drop-in directories */ |
1555 | ||
1556 | dropin_dir_name = strjoina(info->name, ".d"); | |
c3e7fba0 | 1557 | STRV_FOREACH(p, lp->search_path) { |
142468d8 JL |
1558 | char *path; |
1559 | ||
62a85ee0 | 1560 | path = path_join(*p, dropin_dir_name); |
142468d8 JL |
1561 | if (!path) |
1562 | return -ENOMEM; | |
1563 | ||
1564 | r = strv_consume(&dirs, path); | |
1565 | if (r < 0) | |
1566 | return r; | |
1567 | } | |
1568 | ||
1569 | if (template) { | |
1570 | dropin_template_dir_name = strjoina(template, ".d"); | |
c3e7fba0 | 1571 | STRV_FOREACH(p, lp->search_path) { |
142468d8 JL |
1572 | char *path; |
1573 | ||
62a85ee0 | 1574 | path = path_join(*p, dropin_template_dir_name); |
142468d8 JL |
1575 | if (!path) |
1576 | return -ENOMEM; | |
1577 | ||
1578 | r = strv_consume(&dirs, path); | |
1579 | if (r < 0) | |
1580 | return r; | |
1581 | } | |
1582 | } | |
1583 | ||
1584 | /* Load drop-in conf files */ | |
1585 | ||
1586 | r = conf_files_list_strv(&files, ".conf", NULL, 0, (const char**) dirs); | |
1587 | if (r < 0) | |
1588 | return log_debug_errno(r, "Failed to get list of conf files: %m"); | |
1589 | ||
1590 | STRV_FOREACH(p, files) { | |
4a84db4c | 1591 | r = unit_file_load_or_readlink(ctx, info, *p, lp, flags | SEARCH_DROPIN); |
142468d8 | 1592 | if (r < 0) |
e75a26d0 | 1593 | return log_debug_errno(r, "Failed to load conf file \"%s\": %m", *p); |
142468d8 JL |
1594 | } |
1595 | ||
1596 | return result; | |
83096483 LP |
1597 | } |
1598 | ||
0ec0deaa | 1599 | static int install_info_follow( |
4a84db4c | 1600 | InstallContext *ctx, |
0047d54d | 1601 | InstallInfo *info, |
c3e7fba0 | 1602 | const LookupPaths *lp, |
9f6cbcf5 LP |
1603 | SearchFlags flags, |
1604 | bool ignore_different_name) { | |
0ec0deaa | 1605 | |
4a84db4c ZJS |
1606 | assert(ctx); |
1607 | assert(info); | |
0ec0deaa | 1608 | |
91810c8f | 1609 | if (!IN_SET(info->install_mode, INSTALL_MODE_ALIAS, INSTALL_MODE_LINKED)) |
0ec0deaa | 1610 | return -EINVAL; |
4a84db4c | 1611 | if (!info->symlink_target) |
0ec0deaa LP |
1612 | return -EINVAL; |
1613 | ||
4f5c2485 | 1614 | /* If the basename doesn't match, the caller should add a complete new entry for this. */ |
0ec0deaa | 1615 | |
4a84db4c | 1616 | if (!ignore_different_name && !streq(basename(info->symlink_target), info->name)) |
0ec0deaa LP |
1617 | return -EXDEV; |
1618 | ||
4a84db4c | 1619 | free_and_replace(info->path, info->symlink_target); |
91810c8f | 1620 | info->install_mode = _INSTALL_MODE_INVALID; |
0ec0deaa | 1621 | |
4a84db4c | 1622 | return unit_file_load_or_readlink(ctx, info, info->path, lp, flags); |
0ec0deaa LP |
1623 | } |
1624 | ||
64f9280e | 1625 | /** |
ff56349d ZJS |
1626 | * Search for the unit file. If the unit name is a symlink, follow the symlink to the |
1627 | * target, maybe more than once. Propagate the instance name if present. | |
64f9280e | 1628 | */ |
0ec0deaa | 1629 | static int install_info_traverse( |
4a84db4c | 1630 | InstallContext *ctx, |
c3e7fba0 | 1631 | const LookupPaths *lp, |
0047d54d | 1632 | InstallInfo *start, |
0ec0deaa | 1633 | SearchFlags flags, |
0047d54d | 1634 | InstallInfo **ret) { |
83096483 | 1635 | |
0047d54d | 1636 | InstallInfo *i; |
0ec0deaa | 1637 | unsigned k = 0; |
83096483 LP |
1638 | int r; |
1639 | ||
c3e7fba0 | 1640 | assert(lp); |
0ec0deaa | 1641 | assert(start); |
4a84db4c | 1642 | assert(ctx); |
83096483 | 1643 | |
4a84db4c | 1644 | r = unit_file_search(ctx, start, lp, flags); |
83096483 LP |
1645 | if (r < 0) |
1646 | return r; | |
1647 | ||
0ec0deaa | 1648 | i = start; |
91810c8f | 1649 | while (IN_SET(i->install_mode, INSTALL_MODE_ALIAS, INSTALL_MODE_LINKED)) { |
0ec0deaa | 1650 | /* Follow the symlink */ |
83096483 | 1651 | |
0ec0deaa LP |
1652 | if (++k > UNIT_FILE_FOLLOW_SYMLINK_MAX) |
1653 | return -ELOOP; | |
83096483 | 1654 | |
e1c5c2b0 | 1655 | if (!(flags & SEARCH_FOLLOW_CONFIG_SYMLINKS)) { |
c3e7fba0 | 1656 | r = path_is_config(lp, i->path, true); |
e1c5c2b0 LP |
1657 | if (r < 0) |
1658 | return r; | |
1659 | if (r > 0) | |
1660 | return -ELOOP; | |
1661 | } | |
83096483 | 1662 | |
48eadb9d ZJS |
1663 | r = install_info_follow(ctx, i, lp, flags, |
1664 | /* If linked, don't look at the target name */ | |
91810c8f | 1665 | /* ignore_different_name= */ i->install_mode == INSTALL_MODE_LINKED); |
19cfda9f | 1666 | if (r == -EXDEV && i->symlink_target) { |
0ec0deaa LP |
1667 | _cleanup_free_ char *buffer = NULL; |
1668 | const char *bn; | |
83096483 | 1669 | |
4f5c2485 | 1670 | /* Target is an alias, create a new install info object and continue with that. */ |
83096483 | 1671 | |
0ec0deaa | 1672 | bn = basename(i->symlink_target); |
83096483 | 1673 | |
0ec0deaa LP |
1674 | if (unit_name_is_valid(i->name, UNIT_NAME_INSTANCE) && |
1675 | unit_name_is_valid(bn, UNIT_NAME_TEMPLATE)) { | |
83096483 | 1676 | |
0ec0deaa LP |
1677 | _cleanup_free_ char *instance = NULL; |
1678 | ||
1679 | r = unit_name_to_instance(i->name, &instance); | |
1680 | if (r < 0) | |
1681 | return r; | |
1682 | ||
1683 | r = unit_name_replace_instance(bn, instance, &buffer); | |
1684 | if (r < 0) | |
1685 | return r; | |
1686 | ||
9f6cbcf5 LP |
1687 | if (streq(buffer, i->name)) { |
1688 | ||
4f5c2485 ZJS |
1689 | /* We filled in the instance, and the target stayed the same? If so, |
1690 | * then let's honour the link as it is. */ | |
9f6cbcf5 | 1691 | |
4a84db4c | 1692 | r = install_info_follow(ctx, i, lp, flags, true); |
9f6cbcf5 LP |
1693 | if (r < 0) |
1694 | return r; | |
1695 | ||
1696 | continue; | |
1697 | } | |
1698 | ||
0ec0deaa LP |
1699 | bn = buffer; |
1700 | } | |
1701 | ||
4a84db4c | 1702 | r = install_info_add(ctx, bn, NULL, lp->root_dir, /* auxiliary= */ false, &i); |
0ec0deaa LP |
1703 | if (r < 0) |
1704 | return r; | |
1705 | ||
0155928c | 1706 | /* Try again, with the new target we found. */ |
4a84db4c | 1707 | r = unit_file_search(ctx, i, lp, flags); |
893275df ZJS |
1708 | if (r == -ENOENT) |
1709 | /* Translate error code to highlight this specific case */ | |
1710 | return -ENOLINK; | |
0ec0deaa LP |
1711 | } |
1712 | ||
0155928c ZJS |
1713 | if (r < 0) |
1714 | return r; | |
83096483 LP |
1715 | } |
1716 | ||
0ec0deaa LP |
1717 | if (ret) |
1718 | *ret = i; | |
83096483 | 1719 | |
0ec0deaa LP |
1720 | return 0; |
1721 | } | |
83096483 | 1722 | |
ff56349d ZJS |
1723 | /** |
1724 | * Call install_info_add() with name_or_path as the path (if name_or_path starts with "/") | |
1725 | * or the name (otherwise). root_dir is prepended to the path. | |
1726 | */ | |
401017e0 | 1727 | static int install_info_add_auto( |
4a84db4c | 1728 | InstallContext *ctx, |
c3e7fba0 | 1729 | const LookupPaths *lp, |
401017e0 | 1730 | const char *name_or_path, |
0047d54d | 1731 | InstallInfo **ret) { |
401017e0 | 1732 | |
4a84db4c | 1733 | assert(ctx); |
401017e0 LP |
1734 | assert(name_or_path); |
1735 | ||
1736 | if (path_is_absolute(name_or_path)) { | |
1737 | const char *pp; | |
1738 | ||
c3e7fba0 | 1739 | pp = prefix_roota(lp->root_dir, name_or_path); |
401017e0 | 1740 | |
4a84db4c | 1741 | return install_info_add(ctx, NULL, pp, lp->root_dir, /* auxiliary= */ false, ret); |
401017e0 | 1742 | } else |
4a84db4c | 1743 | return install_info_add(ctx, name_or_path, NULL, lp->root_dir, /* auxiliary= */ false, ret); |
401017e0 LP |
1744 | } |
1745 | ||
0ec0deaa | 1746 | static int install_info_discover( |
4a84db4c | 1747 | InstallContext *ctx, |
c3e7fba0 | 1748 | const LookupPaths *lp, |
0f87041f | 1749 | const char *name_or_path, |
0ec0deaa | 1750 | SearchFlags flags, |
0047d54d | 1751 | InstallInfo **ret, |
cd44ec5a | 1752 | InstallChange **changes, |
da6053d0 | 1753 | size_t *n_changes) { |
83096483 | 1754 | |
0047d54d | 1755 | InstallInfo *info; |
0ec0deaa | 1756 | int r; |
83096483 | 1757 | |
4a84db4c | 1758 | assert(ctx); |
c3e7fba0 | 1759 | assert(lp); |
0f87041f | 1760 | assert(name_or_path); |
0ec0deaa | 1761 | |
0f87041f | 1762 | r = install_info_add_auto(ctx, lp, name_or_path, &info); |
59108fbe | 1763 | if (r >= 0) |
4a84db4c | 1764 | r = install_info_traverse(ctx, lp, info, flags, ret); |
83096483 | 1765 | |
59108fbe | 1766 | if (r < 0) |
cd44ec5a | 1767 | install_changes_add(changes, n_changes, r, name_or_path, NULL); |
59108fbe | 1768 | return r; |
83096483 LP |
1769 | } |
1770 | ||
1e475a0a | 1771 | static int install_info_discover_and_check( |
4a84db4c ZJS |
1772 | InstallContext *ctx, |
1773 | const LookupPaths *lp, | |
0f87041f | 1774 | const char *name_or_path, |
4a84db4c | 1775 | SearchFlags flags, |
0047d54d | 1776 | InstallInfo **ret, |
cd44ec5a | 1777 | InstallChange **changes, |
4a84db4c | 1778 | size_t *n_changes) { |
1e475a0a RB |
1779 | |
1780 | int r; | |
1781 | ||
0f87041f | 1782 | r = install_info_discover(ctx, lp, name_or_path, flags, ret, changes, n_changes); |
1e475a0a RB |
1783 | if (r < 0) |
1784 | return r; | |
1785 | ||
c3e7fba0 | 1786 | return install_info_may_process(ret ? *ret : NULL, lp, changes, n_changes); |
1e475a0a RB |
1787 | } |
1788 | ||
cbfdbffb | 1789 | int unit_file_verify_alias( |
0047d54d | 1790 | const InstallInfo *info, |
cbfdbffb ZJS |
1791 | const char *dst, |
1792 | char **ret_dst, | |
cd44ec5a | 1793 | InstallChange **changes, |
cbfdbffb ZJS |
1794 | size_t *n_changes) { |
1795 | ||
3f57bc22 | 1796 | _cleanup_free_ char *dst_updated = NULL; |
aa0f357f ZJS |
1797 | int r; |
1798 | ||
3f57bc22 ZJS |
1799 | /* Verify that dst is a valid either a valid alias or a valid .wants/.requires symlink for the target |
1800 | * unit *i. Return negative on error or if not compatible, zero on success. | |
1801 | * | |
1802 | * ret_dst is set in cases where "instance propagation" happens, i.e. when the instance part is | |
1803 | * inserted into dst. It is not normally set, even on success, so that the caller can easily | |
162392b7 | 1804 | * distinguish the case where instance propagation occurred. |
f663e646 ZJS |
1805 | * |
1806 | * Returns: | |
1807 | * -EXDEV when the alias doesn't match the unit, | |
1808 | * -EUCLEAN when the name is invalid, | |
1809 | * -ELOOP when the alias it to the unit itself. | |
3f57bc22 ZJS |
1810 | */ |
1811 | ||
1812 | const char *path_alias = strrchr(dst, '/'); | |
1813 | if (path_alias) { | |
1814 | /* This branch covers legacy Alias= function of creating .wants and .requires symlinks. */ | |
1815 | _cleanup_free_ char *dir = NULL; | |
1bf15585 | 1816 | char *p; |
aa0f357f | 1817 | |
3f57bc22 | 1818 | path_alias ++; /* skip over slash */ |
aa0f357f | 1819 | |
45519d13 LP |
1820 | r = path_extract_directory(dst, &dir); |
1821 | if (r < 0) | |
1822 | return log_error_errno(r, "Failed to extract parent directory from '%s': %m", dst); | |
aa0f357f | 1823 | |
1bf15585 ZJS |
1824 | p = endswith(dir, ".wants"); |
1825 | if (!p) | |
1826 | p = endswith(dir, ".requires"); | |
cbfdbffb | 1827 | if (!p) { |
cd44ec5a | 1828 | install_changes_add(changes, n_changes, -EXDEV, dst, NULL); |
cbfdbffb ZJS |
1829 | return log_debug_errno(SYNTHETIC_ERRNO(EXDEV), "Invalid path \"%s\" in alias.", dir); |
1830 | } | |
1831 | ||
1bf15585 ZJS |
1832 | *p = '\0'; /* dir should now be a unit name */ |
1833 | ||
73ce91a0 | 1834 | UnitNameFlags type = unit_name_classify(dir); |
cbfdbffb | 1835 | if (type < 0) { |
cd44ec5a | 1836 | install_changes_add(changes, n_changes, -EXDEV, dst, NULL); |
cbfdbffb ZJS |
1837 | return log_debug_errno(SYNTHETIC_ERRNO(EXDEV), |
1838 | "Invalid unit name component \"%s\" in alias.", dir); | |
1839 | } | |
1bf15585 | 1840 | |
73ce91a0 | 1841 | const bool instance_propagation = type == UNIT_NAME_TEMPLATE; |
3f57bc22 ZJS |
1842 | |
1843 | /* That's the name we want to use for verification. */ | |
4a84db4c | 1844 | r = unit_symlink_name_compatible(path_alias, info->name, instance_propagation); |
aa0f357f | 1845 | if (r < 0) |
3f57bc22 | 1846 | return log_error_errno(r, "Failed to verify alias validity: %m"); |
cbfdbffb | 1847 | if (r == 0) { |
cd44ec5a | 1848 | install_changes_add(changes, n_changes, -EXDEV, dst, info->name); |
cbfdbffb ZJS |
1849 | return log_debug_errno(SYNTHETIC_ERRNO(EXDEV), |
1850 | "Invalid unit \"%s\" symlink \"%s\".", | |
1851 | info->name, dst); | |
1852 | } | |
3f57bc22 ZJS |
1853 | |
1854 | } else { | |
1855 | /* If the symlink target has an instance set and the symlink source doesn't, we "propagate | |
1856 | * the instance", i.e. instantiate the symlink source with the target instance. */ | |
1857 | if (unit_name_is_valid(dst, UNIT_NAME_TEMPLATE)) { | |
1858 | _cleanup_free_ char *inst = NULL; | |
1859 | ||
4a84db4c | 1860 | UnitNameFlags type = unit_name_to_instance(info->name, &inst); |
cbfdbffb | 1861 | if (type < 0) { |
cd44ec5a | 1862 | install_changes_add(changes, n_changes, -EUCLEAN, info->name, NULL); |
cbfdbffb ZJS |
1863 | return log_debug_errno(type, "Failed to extract instance name from \"%s\": %m", info->name); |
1864 | } | |
3f57bc22 | 1865 | |
73ce91a0 | 1866 | if (type == UNIT_NAME_INSTANCE) { |
3f57bc22 ZJS |
1867 | r = unit_name_replace_instance(dst, inst, &dst_updated); |
1868 | if (r < 0) | |
1869 | return log_error_errno(r, "Failed to build unit name from %s+%s: %m", | |
1870 | dst, inst); | |
1871 | } | |
1872 | } | |
aa0f357f | 1873 | |
cbfdbffb | 1874 | r = unit_validate_alias_symlink_or_warn(LOG_DEBUG, dst_updated ?: dst, info->name); |
f663e646 ZJS |
1875 | if (r == -ELOOP) /* -ELOOP means self-alias, which we (quietly) ignore */ |
1876 | return r; | |
94e7298d ZJS |
1877 | if (r < 0) |
1878 | return install_changes_add(changes, n_changes, | |
1879 | r == -EINVAL ? -EXDEV : r, | |
1880 | dst_updated ?: dst, | |
1881 | info->name); | |
aa0f357f ZJS |
1882 | } |
1883 | ||
3f57bc22 | 1884 | *ret_dst = TAKE_PTR(dst_updated); |
aa0f357f ZJS |
1885 | return 0; |
1886 | } | |
1887 | ||
83096483 | 1888 | static int install_info_symlink_alias( |
4870133b | 1889 | RuntimeScope scope, |
0047d54d | 1890 | InstallInfo *info, |
c3e7fba0 | 1891 | const LookupPaths *lp, |
83096483 LP |
1892 | const char *config_path, |
1893 | bool force, | |
cd44ec5a | 1894 | InstallChange **changes, |
da6053d0 | 1895 | size_t *n_changes) { |
83096483 | 1896 | |
83096483 LP |
1897 | int r = 0, q; |
1898 | ||
4a84db4c | 1899 | assert(info); |
c3e7fba0 | 1900 | assert(lp); |
83096483 LP |
1901 | assert(config_path); |
1902 | ||
4a84db4c | 1903 | STRV_FOREACH(s, info->aliases) { |
3f57bc22 | 1904 | _cleanup_free_ char *alias_path = NULL, *dst = NULL, *dst_updated = NULL; |
c067e61b | 1905 | bool broken; |
83096483 | 1906 | |
38e8a6c7 | 1907 | q = install_name_printf(scope, info, *s, &dst); |
6ec4c852 | 1908 | if (q < 0) { |
cd44ec5a | 1909 | install_changes_add(changes, n_changes, q, *s, NULL); |
0d11db59 ZJS |
1910 | r = r < 0 ? r : q; |
1911 | continue; | |
6ec4c852 | 1912 | } |
83096483 | 1913 | |
cbfdbffb | 1914 | q = unit_file_verify_alias(info, dst, &dst_updated, changes, n_changes); |
f663e646 ZJS |
1915 | if (q == -ELOOP) |
1916 | continue; | |
0d11db59 ZJS |
1917 | if (q < 0) { |
1918 | r = r < 0 ? r : q; | |
aa0f357f | 1919 | continue; |
0d11db59 | 1920 | } |
3d0205f2 | 1921 | |
3f57bc22 | 1922 | alias_path = path_make_absolute(dst_updated ?: dst, config_path); |
83096483 LP |
1923 | if (!alias_path) |
1924 | return -ENOMEM; | |
1925 | ||
f461a28d | 1926 | q = chase(alias_path, lp->root_dir, CHASE_NONEXISTENT, NULL, NULL); |
c067e61b MY |
1927 | if (q < 0 && q != -ENOENT) { |
1928 | r = r < 0 ? r : q; | |
1929 | continue; | |
1930 | } | |
1931 | broken = q == 0; /* symlink target does not exist? */ | |
1932 | ||
1933 | q = create_symlink(lp, info->path, alias_path, force || broken, changes, n_changes); | |
0d11db59 | 1934 | r = r < 0 ? r : q; |
83096483 LP |
1935 | } |
1936 | ||
1937 | return r; | |
1938 | } | |
1939 | ||
1940 | static int install_info_symlink_wants( | |
4870133b | 1941 | RuntimeScope scope, |
9b69770a | 1942 | UnitFileFlags file_flags, |
0047d54d | 1943 | InstallInfo *info, |
c3e7fba0 | 1944 | const LookupPaths *lp, |
83096483 | 1945 | const char *config_path, |
d54c4993 LP |
1946 | char **list, |
1947 | const char *suffix, | |
cd44ec5a | 1948 | InstallChange **changes, |
da6053d0 | 1949 | size_t *n_changes) { |
83096483 | 1950 | |
acb5b834 ZJS |
1951 | _cleanup_(install_info_clear) InstallInfo instance = { |
1952 | .install_mode = _INSTALL_MODE_INVALID, | |
1953 | }; | |
1954 | ||
b0ec372a | 1955 | UnitNameFlags valid_dst_type = UNIT_NAME_ANY; |
d54c4993 | 1956 | const char *n; |
83096483 LP |
1957 | int r = 0, q; |
1958 | ||
4a84db4c | 1959 | assert(info); |
c3e7fba0 | 1960 | assert(lp); |
83096483 LP |
1961 | assert(config_path); |
1962 | ||
047d91f9 ZJS |
1963 | if (strv_isempty(list)) |
1964 | return 0; | |
1965 | ||
4a84db4c | 1966 | if (unit_name_is_valid(info->name, UNIT_NAME_PLAIN | UNIT_NAME_INSTANCE)) |
b0ec372a | 1967 | /* Not a template unit. Use the name directly. */ |
4a84db4c | 1968 | n = info->name; |
b0ec372a | 1969 | |
4a84db4c | 1970 | else if (info->default_instance) { |
b0ec372a | 1971 | /* If this is a template, and we have a default instance, use it. */ |
e4086ae0 | 1972 | |
acb5b834 | 1973 | r = unit_name_replace_instance(info->name, info->default_instance, &instance.name); |
7410616c LP |
1974 | if (r < 0) |
1975 | return r; | |
83096483 | 1976 | |
c3e7fba0 | 1977 | r = unit_file_search(NULL, &instance, lp, SEARCH_FOLLOW_CONFIG_SYMLINKS); |
047d91f9 ZJS |
1978 | if (r < 0) |
1979 | return r; | |
1980 | ||
94e7298d ZJS |
1981 | if (instance.install_mode == INSTALL_MODE_MASKED) |
1982 | return install_changes_add(changes, n_changes, -ERFKILL, instance.path, NULL); | |
047d91f9 | 1983 | |
acb5b834 | 1984 | n = instance.name; |
b0ec372a ZJS |
1985 | |
1986 | } else { | |
1987 | /* We have a template, but no instance yet. When used with an instantiated unit, we will get | |
1988 | * the instance from that unit. Cannot be used with non-instance units. */ | |
1989 | ||
1990 | valid_dst_type = UNIT_NAME_INSTANCE | UNIT_NAME_TEMPLATE; | |
4a84db4c | 1991 | n = info->name; |
b0ec372a | 1992 | } |
78d54bd4 | 1993 | |
f5a0162d | 1994 | r = 0; |
d54c4993 | 1995 | STRV_FOREACH(s, list) { |
9aa3d6b4 | 1996 | _cleanup_free_ char *path = NULL, *dst = NULL; |
78d54bd4 | 1997 | |
38e8a6c7 | 1998 | q = install_name_printf(scope, info, *s, &dst); |
f5a0162d YW |
1999 | if (q < 0) { |
2000 | install_changes_add(changes, n_changes, q, *s, NULL); | |
2001 | if (r >= 0) | |
2002 | r = q; | |
f8979e86 DT |
2003 | |
2004 | continue; | |
f5a0162d | 2005 | } |
7584d236 | 2006 | |
b0ec372a | 2007 | if (!unit_name_is_valid(dst, valid_dst_type)) { |
ad5fdd39 ZJS |
2008 | /* Generate a proper error here: EUCLEAN if the name is generally bad, EIDRM if the |
2009 | * template status doesn't match. If we are doing presets don't bother reporting the | |
2010 | * error. This also covers cases like 'systemctl preset serial-getty@.service', which | |
2011 | * has no DefaultInstance, so there is nothing we can do. At the same time, | |
2012 | * 'systemctl enable serial-getty@.service' should fail, the user should specify an | |
2013 | * instance like in 'systemctl enable serial-getty@ttyS0.service'. | |
2014 | */ | |
2015 | if (file_flags & UNIT_FILE_IGNORE_AUXILIARY_FAILURE) | |
2016 | continue; | |
2017 | ||
94e7298d | 2018 | if (unit_name_is_valid(dst, UNIT_NAME_ANY)) |
f5a0162d | 2019 | q = install_changes_add(changes, n_changes, -EIDRM, dst, n); |
94e7298d | 2020 | else |
f5a0162d YW |
2021 | q = install_changes_add(changes, n_changes, -EUCLEAN, dst, NULL); |
2022 | if (r >= 0) | |
2023 | r = q; | |
b0ec372a | 2024 | |
78d54bd4 LP |
2025 | continue; |
2026 | } | |
2027 | ||
9aa3d6b4 | 2028 | path = strjoin(config_path, "/", dst, suffix, n); |
d54c4993 | 2029 | if (!path) |
78d54bd4 LP |
2030 | return -ENOMEM; |
2031 | ||
9aa3d6b4 | 2032 | q = create_symlink(lp, info->path, path, true, changes, n_changes); |
f5a0162d | 2033 | if ((q < 0 && r >= 0) || r == 0) |
78d54bd4 | 2034 | r = q; |
8ae27441 | 2035 | |
f31f10a6 ZJS |
2036 | if (unit_file_exists(scope, lp, dst) == 0) { |
2037 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_DESTINATION_NOT_PRESENT, dst, info->path); | |
2038 | if (q < 0) | |
2039 | return q; | |
2040 | } | |
78d54bd4 LP |
2041 | } |
2042 | ||
2043 | return r; | |
2044 | } | |
2045 | ||
83096483 | 2046 | static int install_info_symlink_link( |
0047d54d | 2047 | InstallInfo *info, |
c3e7fba0 | 2048 | const LookupPaths *lp, |
83096483 LP |
2049 | const char *config_path, |
2050 | bool force, | |
cd44ec5a | 2051 | InstallChange **changes, |
da6053d0 | 2052 | size_t *n_changes) { |
83096483 | 2053 | |
7fd1b19b | 2054 | _cleanup_free_ char *path = NULL; |
1dacfd2a | 2055 | int r; |
83096483 | 2056 | |
4a84db4c | 2057 | assert(info); |
c3e7fba0 | 2058 | assert(lp); |
83096483 | 2059 | assert(config_path); |
4a84db4c | 2060 | assert(info->path); |
83096483 | 2061 | |
4a84db4c | 2062 | r = in_search_path(lp, info->path); |
fe4aede9 | 2063 | if (r < 0) |
83096483 | 2064 | return r; |
fe4aede9 ZJS |
2065 | if (r > 0) |
2066 | return 0; | |
83096483 | 2067 | |
4a84db4c | 2068 | path = path_join(config_path, info->name); |
1dacfd2a | 2069 | if (!path) |
83096483 LP |
2070 | return -ENOMEM; |
2071 | ||
4a84db4c | 2072 | return create_symlink(lp, info->path, path, force, changes, n_changes); |
83096483 LP |
2073 | } |
2074 | ||
2075 | static int install_info_apply( | |
4870133b | 2076 | RuntimeScope scope, |
9b69770a | 2077 | UnitFileFlags file_flags, |
0047d54d | 2078 | InstallInfo *info, |
c3e7fba0 | 2079 | const LookupPaths *lp, |
83096483 | 2080 | const char *config_path, |
cd44ec5a | 2081 | InstallChange **changes, |
da6053d0 | 2082 | size_t *n_changes) { |
83096483 LP |
2083 | |
2084 | int r, q; | |
2085 | ||
4a84db4c | 2086 | assert(info); |
c3e7fba0 | 2087 | assert(lp); |
83096483 LP |
2088 | assert(config_path); |
2089 | ||
91810c8f | 2090 | if (info->install_mode != INSTALL_MODE_REGULAR) |
0ec0deaa LP |
2091 | return 0; |
2092 | ||
9b69770a ZJS |
2093 | bool force = file_flags & UNIT_FILE_FORCE; |
2094 | ||
20d68b3a ZJS |
2095 | r = install_info_symlink_link(info, lp, config_path, force, changes, n_changes); |
2096 | /* Do not count links to the unit file towards the "carries_install_info" count */ | |
2097 | if (r < 0) | |
2098 | /* If linking of the file failed, do not try to create other symlinks, | |
2099 | * because they might would pointing to a non-existent or wrong unit. */ | |
2100 | return r; | |
2101 | ||
4a84db4c | 2102 | r = install_info_symlink_alias(scope, info, lp, config_path, force, changes, n_changes); |
83096483 | 2103 | |
4a84db4c | 2104 | q = install_info_symlink_wants(scope, file_flags, info, lp, config_path, info->wanted_by, ".wants/", changes, n_changes); |
83096483 LP |
2105 | if (r == 0) |
2106 | r = q; | |
2107 | ||
4a84db4c | 2108 | q = install_info_symlink_wants(scope, file_flags, info, lp, config_path, info->required_by, ".requires/", changes, n_changes); |
78d54bd4 LP |
2109 | if (r == 0) |
2110 | r = q; | |
2111 | ||
83096483 LP |
2112 | return r; |
2113 | } | |
2114 | ||
2115 | static int install_context_apply( | |
4a84db4c | 2116 | InstallContext *ctx, |
c3e7fba0 | 2117 | const LookupPaths *lp, |
4a84db4c | 2118 | UnitFileFlags file_flags, |
83096483 | 2119 | const char *config_path, |
0ec0deaa | 2120 | SearchFlags flags, |
cd44ec5a | 2121 | InstallChange **changes, |
da6053d0 | 2122 | size_t *n_changes) { |
83096483 | 2123 | |
0047d54d | 2124 | InstallInfo *i; |
0ec0deaa | 2125 | int r; |
83096483 | 2126 | |
4a84db4c | 2127 | assert(ctx); |
c3e7fba0 | 2128 | assert(lp); |
83096483 LP |
2129 | assert(config_path); |
2130 | ||
4a84db4c | 2131 | if (ordered_hashmap_isempty(ctx->will_process)) |
d25e100b | 2132 | return 0; |
83096483 | 2133 | |
4a84db4c | 2134 | r = ordered_hashmap_ensure_allocated(&ctx->have_processed, &string_hash_ops); |
d25e100b LP |
2135 | if (r < 0) |
2136 | return r; | |
83096483 | 2137 | |
2d5c93c7 | 2138 | r = 0; |
4a84db4c | 2139 | while ((i = ordered_hashmap_first(ctx->will_process))) { |
0ec0deaa | 2140 | int q; |
83096483 | 2141 | |
4a84db4c | 2142 | q = ordered_hashmap_move_one(ctx->have_processed, ctx->will_process, i->name); |
0ec0deaa LP |
2143 | if (q < 0) |
2144 | return q; | |
83096483 | 2145 | |
4a84db4c | 2146 | q = install_info_traverse(ctx, lp, i, flags, NULL); |
459500a3 | 2147 | if (q < 0) { |
3aa96361 | 2148 | if (i->auxiliary) { |
4a4af850 | 2149 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_AUXILIARY_FAILED, i->name, NULL); |
3aa96361 ZJS |
2150 | if (q < 0) |
2151 | return q; | |
2152 | continue; | |
2153 | } | |
2154 | ||
94e7298d | 2155 | return install_changes_add(changes, n_changes, q, i->name, NULL); |
db093eed | 2156 | } |
0ec0deaa | 2157 | |
f1651715 | 2158 | /* We can attempt to process a masked unit when a different unit |
047d91f9 | 2159 | * that we were processing specifies it in Also=. */ |
91810c8f | 2160 | if (i->install_mode == INSTALL_MODE_MASKED) { |
f31f10a6 ZJS |
2161 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_IS_MASKED, i->path, NULL); |
2162 | if (q < 0) | |
2163 | return q; | |
f1651715 | 2164 | if (r >= 0) |
047d91f9 ZJS |
2165 | /* Assume that something *could* have been enabled here, |
2166 | * avoid "empty [Install] section" warning. */ | |
f1651715 ZJS |
2167 | r += 1; |
2168 | continue; | |
2169 | } | |
2170 | ||
91810c8f | 2171 | if (i->install_mode != INSTALL_MODE_REGULAR) |
0ec0deaa | 2172 | continue; |
83096483 | 2173 | |
4a84db4c | 2174 | q = install_info_apply(ctx->scope, file_flags, i, lp, config_path, changes, n_changes); |
0ec0deaa LP |
2175 | if (r >= 0) { |
2176 | if (q < 0) | |
2177 | r = q; | |
2178 | else | |
596fc263 | 2179 | r += q; |
0ec0deaa | 2180 | } |
83096483 LP |
2181 | } |
2182 | ||
2183 | return r; | |
2184 | } | |
2185 | ||
2186 | static int install_context_mark_for_removal( | |
4a84db4c | 2187 | InstallContext *ctx, |
c3e7fba0 | 2188 | const LookupPaths *lp, |
83096483 | 2189 | Set **remove_symlinks_to, |
1830ac51 | 2190 | const char *config_path, |
cd44ec5a | 2191 | InstallChange **changes, |
da6053d0 | 2192 | size_t *n_changes) { |
83096483 | 2193 | |
0047d54d | 2194 | InstallInfo *i; |
0ec0deaa | 2195 | int r; |
83096483 | 2196 | |
4a84db4c | 2197 | assert(ctx); |
c3e7fba0 | 2198 | assert(lp); |
1830ac51 | 2199 | assert(config_path); |
83096483 LP |
2200 | |
2201 | /* Marks all items for removal */ | |
2202 | ||
4a84db4c | 2203 | if (ordered_hashmap_isempty(ctx->will_process)) |
d25e100b | 2204 | return 0; |
83096483 | 2205 | |
4a84db4c | 2206 | r = ordered_hashmap_ensure_allocated(&ctx->have_processed, &string_hash_ops); |
d25e100b LP |
2207 | if (r < 0) |
2208 | return r; | |
83096483 | 2209 | |
4a84db4c | 2210 | while ((i = ordered_hashmap_first(ctx->will_process))) { |
83096483 | 2211 | |
4a84db4c | 2212 | r = ordered_hashmap_move_one(ctx->have_processed, ctx->will_process, i->name); |
0ec0deaa | 2213 | if (r < 0) |
83096483 | 2214 | return r; |
29283ea4 | 2215 | |
4a84db4c | 2216 | r = install_info_traverse(ctx, lp, i, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, NULL); |
19539807 | 2217 | if (r == -ENOLINK) { |
637d6e5b | 2218 | log_debug_errno(r, "Name %s leads to a dangling symlink, removing name.", i->name); |
f31f10a6 ZJS |
2219 | r = install_changes_add(changes, n_changes, INSTALL_CHANGE_IS_DANGLING, i->path ?: i->name, NULL); |
2220 | if (r < 0) | |
2221 | return r; | |
637d6e5b | 2222 | } else if (r == -ENOENT) { |
637d6e5b LP |
2223 | if (i->auxiliary) /* some unit specified in Also= or similar is missing */ |
2224 | log_debug_errno(r, "Auxiliary unit of %s not found, removing name.", i->name); | |
2225 | else { | |
2226 | log_debug_errno(r, "Unit %s not found, removing name.", i->name); | |
f31f10a6 ZJS |
2227 | r = install_changes_add(changes, n_changes, r, i->path ?: i->name, NULL); |
2228 | if (r < 0) | |
2229 | return r; | |
637d6e5b | 2230 | } |
637d6e5b LP |
2231 | } else if (r < 0) { |
2232 | log_debug_errno(r, "Failed to find unit %s, removing name: %m", i->name); | |
cd44ec5a | 2233 | install_changes_add(changes, n_changes, r, i->path ?: i->name, NULL); |
91810c8f | 2234 | } else if (i->install_mode == INSTALL_MODE_MASKED) { |
637d6e5b | 2235 | log_debug("Unit file %s is masked, ignoring.", i->name); |
1308f72e | 2236 | install_changes_add(changes, n_changes, INSTALL_CHANGE_IS_MASKED, i->path ?: i->name, NULL); |
637d6e5b | 2237 | continue; |
91810c8f ZJS |
2238 | } else if (i->install_mode != INSTALL_MODE_REGULAR) { |
2239 | log_debug("Unit %s has install mode %s, ignoring.", | |
2240 | i->name, install_mode_to_string(i->install_mode) ?: "invalid"); | |
0ec0deaa | 2241 | continue; |
64f9280e | 2242 | } |
0ec0deaa LP |
2243 | |
2244 | r = mark_symlink_for_removal(remove_symlinks_to, i->name); | |
2245 | if (r < 0) | |
2246 | return r; | |
2247 | } | |
2248 | ||
2249 | return 0; | |
2250 | } | |
2251 | ||
2252 | int unit_file_mask( | |
4870133b | 2253 | RuntimeScope scope, |
b3796dd8 | 2254 | UnitFileFlags flags, |
0ec0deaa | 2255 | const char *root_dir, |
0f87041f | 2256 | char **names, |
cd44ec5a | 2257 | InstallChange **changes, |
da6053d0 | 2258 | size_t *n_changes) { |
0ec0deaa | 2259 | |
c3e7fba0 | 2260 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
e1c5c2b0 | 2261 | const char *config_path; |
0ec0deaa LP |
2262 | int r; |
2263 | ||
2264 | assert(scope >= 0); | |
4870133b | 2265 | assert(scope < _RUNTIME_SCOPE_MAX); |
0ec0deaa | 2266 | |
c3e7fba0 | 2267 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
0ec0deaa LP |
2268 | if (r < 0) |
2269 | return r; | |
2270 | ||
c3e7fba0 | 2271 | config_path = (flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
d0fd66a3 LP |
2272 | if (!config_path) |
2273 | return -ENXIO; | |
e1c5c2b0 | 2274 | |
0f87041f | 2275 | STRV_FOREACH(name, names) { |
0ec0deaa LP |
2276 | _cleanup_free_ char *path = NULL; |
2277 | int q; | |
2278 | ||
0f87041f | 2279 | if (!unit_name_is_valid(*name, UNIT_NAME_ANY)) { |
0ec0deaa LP |
2280 | if (r == 0) |
2281 | r = -EINVAL; | |
2282 | continue; | |
2283 | } | |
2284 | ||
0f87041f | 2285 | path = path_make_absolute(*name, config_path); |
0ec0deaa LP |
2286 | if (!path) |
2287 | return -ENOMEM; | |
29283ea4 | 2288 | |
d3e85c9c | 2289 | q = create_symlink(&lp, "/dev/null", path, flags & UNIT_FILE_FORCE, changes, n_changes); |
0ec0deaa | 2290 | if (q < 0 && r >= 0) |
83096483 LP |
2291 | r = q; |
2292 | } | |
2293 | ||
2294 | return r; | |
2295 | } | |
2296 | ||
0ec0deaa | 2297 | int unit_file_unmask( |
4870133b | 2298 | RuntimeScope scope, |
b3796dd8 | 2299 | UnitFileFlags flags, |
0ec0deaa | 2300 | const char *root_dir, |
0f87041f | 2301 | char **names, |
cd44ec5a | 2302 | InstallChange **changes, |
da6053d0 | 2303 | size_t *n_changes) { |
0ec0deaa | 2304 | |
c3e7fba0 | 2305 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
0ec0deaa | 2306 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; |
dc7dd61d | 2307 | _cleanup_strv_free_ char **todo = NULL; |
e1c5c2b0 | 2308 | const char *config_path; |
319a4f4b | 2309 | size_t n_todo = 0; |
0ec0deaa LP |
2310 | int r, q; |
2311 | ||
2312 | assert(scope >= 0); | |
4870133b | 2313 | assert(scope < _RUNTIME_SCOPE_MAX); |
0ec0deaa | 2314 | |
c3e7fba0 | 2315 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
0ec0deaa LP |
2316 | if (r < 0) |
2317 | return r; | |
2318 | ||
c3e7fba0 | 2319 | config_path = (flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
1830ac51 MB |
2320 | if (!config_path) |
2321 | return -ENXIO; | |
2322 | ||
d3e85c9c | 2323 | bool dry_run = flags & UNIT_FILE_DRY_RUN; |
1830ac51 | 2324 | |
0f87041f | 2325 | STRV_FOREACH(name, names) { |
0f87041f | 2326 | if (!unit_name_is_valid(*name, UNIT_NAME_ANY)) |
0ec0deaa LP |
2327 | return -EINVAL; |
2328 | ||
bf3b0d5f ZJS |
2329 | /* If root_dir is set, we don't care about kernel commandline or generators. |
2330 | * But if it is not set, we need to check for interference. */ | |
2331 | if (!root_dir) { | |
2332 | _cleanup_(install_info_clear) InstallInfo info = { | |
2333 | .name = *name, /* We borrow *name temporarily… */ | |
2334 | .install_mode = _INSTALL_MODE_INVALID, | |
2335 | }; | |
2336 | ||
2337 | r = unit_file_search(NULL, &info, &lp, 0); | |
2338 | if (r < 0) { | |
2339 | if (r != -ENOENT) | |
2340 | log_debug_errno(r, "Failed to look up unit %s, ignoring: %m", info.name); | |
f31f10a6 ZJS |
2341 | } else if (info.install_mode == INSTALL_MODE_MASKED && |
2342 | path_is_generator(&lp, info.path)) { | |
2343 | r = install_changes_add(changes, n_changes, | |
2344 | INSTALL_CHANGE_IS_MASKED_GENERATOR, info.name, info.path); | |
2345 | if (r < 0) | |
2346 | return r; | |
bf3b0d5f ZJS |
2347 | } |
2348 | ||
2349 | TAKE_PTR(info.name); /* … and give it back here */ | |
2350 | } | |
2351 | ||
2352 | _cleanup_free_ char *path = path_make_absolute(*name, config_path); | |
1830ac51 MB |
2353 | if (!path) |
2354 | return -ENOMEM; | |
0ec0deaa | 2355 | |
1830ac51 MB |
2356 | r = null_or_empty_path(path); |
2357 | if (r == -ENOENT) | |
2358 | continue; | |
2359 | if (r < 0) | |
2360 | return r; | |
2361 | if (r == 0) | |
2362 | continue; | |
0ec0deaa | 2363 | |
319a4f4b | 2364 | if (!GREEDY_REALLOC0(todo, n_todo + 2)) |
1830ac51 | 2365 | return -ENOMEM; |
d054eae6 | 2366 | |
0f87041f | 2367 | todo[n_todo] = strdup(*name); |
1830ac51 MB |
2368 | if (!todo[n_todo]) |
2369 | return -ENOMEM; | |
4910b350 | 2370 | |
1830ac51 | 2371 | n_todo++; |
0ec0deaa LP |
2372 | } |
2373 | ||
2374 | strv_uniq(todo); | |
2375 | ||
2376 | r = 0; | |
1830ac51 MB |
2377 | STRV_FOREACH(i, todo) { |
2378 | _cleanup_free_ char *path = NULL; | |
2379 | const char *rp; | |
0ec0deaa | 2380 | |
1830ac51 MB |
2381 | path = path_make_absolute(*i, config_path); |
2382 | if (!path) | |
2383 | return -ENOMEM; | |
4910b350 | 2384 | |
1830ac51 MB |
2385 | if (!dry_run && unlink(path) < 0) { |
2386 | if (errno != ENOENT) { | |
2387 | if (r >= 0) | |
2388 | r = -errno; | |
cd44ec5a | 2389 | install_changes_add(changes, n_changes, -errno, path, NULL); |
af3d8113 | 2390 | } |
0ec0deaa | 2391 | |
1830ac51 | 2392 | continue; |
4910b350 | 2393 | } |
401017e0 | 2394 | |
f31f10a6 ZJS |
2395 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_UNLINK, path, NULL); |
2396 | if (q < 0) | |
2397 | return q; | |
1830ac51 | 2398 | |
c3e7fba0 | 2399 | rp = skip_root(lp.root_dir, path); |
1830ac51 MB |
2400 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: path); |
2401 | if (q < 0) | |
2402 | return q; | |
0ec0deaa LP |
2403 | } |
2404 | ||
c3e7fba0 | 2405 | q = remove_marked_symlinks(remove_symlinks_to, config_path, &lp, dry_run, changes, n_changes); |
1830ac51 MB |
2406 | if (r >= 0) |
2407 | r = q; | |
2408 | ||
0ec0deaa LP |
2409 | return r; |
2410 | } | |
2411 | ||
2412 | int unit_file_link( | |
4870133b | 2413 | RuntimeScope scope, |
b3796dd8 | 2414 | UnitFileFlags flags, |
e94937df LN |
2415 | const char *root_dir, |
2416 | char **files, | |
cd44ec5a | 2417 | InstallChange **changes, |
da6053d0 | 2418 | size_t *n_changes) { |
e94937df | 2419 | |
c3e7fba0 | 2420 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
8af35ba6 | 2421 | _cleanup_strv_free_ char **todo = NULL; |
e1c5c2b0 | 2422 | const char *config_path; |
319a4f4b | 2423 | size_t n_todo = 0; |
0ec0deaa | 2424 | int r, q; |
e94937df LN |
2425 | |
2426 | assert(scope >= 0); | |
4870133b | 2427 | assert(scope < _RUNTIME_SCOPE_MAX); |
e94937df | 2428 | |
c3e7fba0 | 2429 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
e94937df LN |
2430 | if (r < 0) |
2431 | return r; | |
2432 | ||
c3e7fba0 | 2433 | config_path = (flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
d0fd66a3 LP |
2434 | if (!config_path) |
2435 | return -ENXIO; | |
e94937df | 2436 | |
0f87041f | 2437 | STRV_FOREACH(file, files) { |
0ec0deaa LP |
2438 | _cleanup_free_ char *full = NULL; |
2439 | struct stat st; | |
2440 | char *fn; | |
e94937df | 2441 | |
0f87041f | 2442 | if (!path_is_absolute(*file)) |
81de6962 | 2443 | return install_changes_add(changes, n_changes, -EINVAL, *file, NULL); |
e94937df | 2444 | |
0f87041f | 2445 | fn = basename(*file); |
0ec0deaa | 2446 | if (!unit_name_is_valid(fn, UNIT_NAME_ANY)) |
81de6962 | 2447 | return install_changes_add(changes, n_changes, -EUCLEAN, *file, NULL); |
0ec0deaa | 2448 | |
0f87041f | 2449 | full = path_join(lp.root_dir, *file); |
0ec0deaa LP |
2450 | if (!full) |
2451 | return -ENOMEM; | |
2452 | ||
2453 | if (lstat(full, &st) < 0) | |
81de6962 ZJS |
2454 | return install_changes_add(changes, n_changes, -errno, *file, NULL); |
2455 | ||
3cc44114 LP |
2456 | r = stat_verify_regular(&st); |
2457 | if (r < 0) | |
81de6962 | 2458 | return install_changes_add(changes, n_changes, r, *file, NULL); |
0ec0deaa | 2459 | |
81de6962 ZJS |
2460 | r = in_search_path(&lp, *file); |
2461 | if (r < 0) | |
2462 | return install_changes_add(changes, n_changes, r, *file, NULL); | |
2463 | if (r > 0) | |
a6f318a5 | 2464 | /* A silent noop if the file is already in the search path. */ |
0ec0deaa LP |
2465 | continue; |
2466 | ||
a6f318a5 ZJS |
2467 | r = underneath_search_path(&lp, *file); |
2468 | if (r > 0) | |
2469 | r = -ETXTBSY; | |
2470 | if (r < 0) | |
2471 | return install_changes_add(changes, n_changes, r, *file, NULL); | |
2472 | ||
319a4f4b | 2473 | if (!GREEDY_REALLOC0(todo, n_todo + 2)) |
0ec0deaa LP |
2474 | return -ENOMEM; |
2475 | ||
0f87041f | 2476 | todo[n_todo] = strdup(*file); |
8af35ba6 EV |
2477 | if (!todo[n_todo]) |
2478 | return -ENOMEM; | |
2479 | ||
2480 | n_todo++; | |
e94937df LN |
2481 | } |
2482 | ||
0ec0deaa | 2483 | strv_uniq(todo); |
e94937df | 2484 | |
0ec0deaa LP |
2485 | r = 0; |
2486 | STRV_FOREACH(i, todo) { | |
401017e0 | 2487 | _cleanup_free_ char *new_path = NULL; |
0ec0deaa | 2488 | |
401017e0 LP |
2489 | new_path = path_make_absolute(basename(*i), config_path); |
2490 | if (!new_path) | |
0ec0deaa LP |
2491 | return -ENOMEM; |
2492 | ||
d3e85c9c | 2493 | q = create_symlink(&lp, *i, new_path, flags & UNIT_FILE_FORCE, changes, n_changes); |
0ec0deaa LP |
2494 | if (q < 0 && r >= 0) |
2495 | r = q; | |
2d5c93c7 MS |
2496 | } |
2497 | ||
0ec0deaa LP |
2498 | return r; |
2499 | } | |
2500 | ||
c3e7fba0 | 2501 | static int path_shall_revert(const LookupPaths *lp, const char *path) { |
344ca755 LP |
2502 | int r; |
2503 | ||
c3e7fba0 | 2504 | assert(lp); |
344ca755 LP |
2505 | assert(path); |
2506 | ||
2507 | /* Checks whether the path is one where the drop-in directories shall be removed. */ | |
2508 | ||
c3e7fba0 | 2509 | r = path_is_config(lp, path, true); |
344ca755 LP |
2510 | if (r != 0) |
2511 | return r; | |
2512 | ||
c3e7fba0 | 2513 | r = path_is_control(lp, path); |
344ca755 LP |
2514 | if (r != 0) |
2515 | return r; | |
2516 | ||
c3e7fba0 | 2517 | return path_is_transient(lp, path); |
344ca755 LP |
2518 | } |
2519 | ||
2520 | int unit_file_revert( | |
4870133b | 2521 | RuntimeScope scope, |
344ca755 | 2522 | const char *root_dir, |
0f87041f | 2523 | char **names, |
cd44ec5a | 2524 | InstallChange **changes, |
da6053d0 | 2525 | size_t *n_changes) { |
344ca755 LP |
2526 | |
2527 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
c3e7fba0 | 2528 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
344ca755 | 2529 | _cleanup_strv_free_ char **todo = NULL; |
319a4f4b | 2530 | size_t n_todo = 0; |
344ca755 LP |
2531 | int r, q; |
2532 | ||
2533 | /* Puts a unit file back into vendor state. This means: | |
2534 | * | |
0f87041f ZJS |
2535 | * a) we remove all drop-in snippets added by the user ("config"), add to transient units |
2536 | * ("transient"), and added via "systemctl set-property" ("control"), but not if the drop-in is | |
2537 | * generated ("generated"). | |
344ca755 | 2538 | * |
0f87041f ZJS |
2539 | * c) if there's a vendor unit file (i.e. one in /usr) we remove any configured overriding unit files |
2540 | * (i.e. in "config", but not in "transient" or "control" or even "generated"). | |
344ca755 | 2541 | * |
4f25723c | 2542 | * We remove all that in both the runtime and the persistent directories, if that applies. |
344ca755 LP |
2543 | */ |
2544 | ||
c3e7fba0 | 2545 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
344ca755 LP |
2546 | if (r < 0) |
2547 | return r; | |
2548 | ||
0f87041f | 2549 | STRV_FOREACH(name, names) { |
344ca755 | 2550 | bool has_vendor = false; |
344ca755 | 2551 | |
0f87041f | 2552 | if (!unit_name_is_valid(*name, UNIT_NAME_ANY)) |
344ca755 LP |
2553 | return -EINVAL; |
2554 | ||
c3e7fba0 | 2555 | STRV_FOREACH(p, lp.search_path) { |
344ca755 LP |
2556 | _cleanup_free_ char *path = NULL, *dropin = NULL; |
2557 | struct stat st; | |
2558 | ||
0f87041f | 2559 | path = path_make_absolute(*name, *p); |
344ca755 LP |
2560 | if (!path) |
2561 | return -ENOMEM; | |
2562 | ||
81de6962 | 2563 | r = RET_NERRNO(lstat(path, &st)); |
344ca755 | 2564 | if (r < 0) { |
81de6962 ZJS |
2565 | if (r != -ENOENT) |
2566 | return install_changes_add(changes, n_changes, r, path, NULL); | |
344ca755 LP |
2567 | } else if (S_ISREG(st.st_mode)) { |
2568 | /* Check if there's a vendor version */ | |
c3e7fba0 | 2569 | r = path_is_vendor_or_generator(&lp, path); |
344ca755 | 2570 | if (r < 0) |
81de6962 | 2571 | return install_changes_add(changes, n_changes, r, path, NULL); |
344ca755 LP |
2572 | if (r > 0) |
2573 | has_vendor = true; | |
2574 | } | |
2575 | ||
b910cc72 | 2576 | dropin = strjoin(path, ".d"); |
344ca755 LP |
2577 | if (!dropin) |
2578 | return -ENOMEM; | |
2579 | ||
81de6962 | 2580 | r = RET_NERRNO(lstat(dropin, &st)); |
344ca755 | 2581 | if (r < 0) { |
81de6962 ZJS |
2582 | if (r != -ENOENT) |
2583 | return install_changes_add(changes, n_changes, r, dropin, NULL); | |
344ca755 LP |
2584 | } else if (S_ISDIR(st.st_mode)) { |
2585 | /* Remove the drop-ins */ | |
c3e7fba0 | 2586 | r = path_shall_revert(&lp, dropin); |
344ca755 | 2587 | if (r < 0) |
81de6962 | 2588 | return install_changes_add(changes, n_changes, r, dropin, NULL); |
344ca755 | 2589 | if (r > 0) { |
319a4f4b | 2590 | if (!GREEDY_REALLOC0(todo, n_todo + 2)) |
344ca755 LP |
2591 | return -ENOMEM; |
2592 | ||
1cc6c93a | 2593 | todo[n_todo++] = TAKE_PTR(dropin); |
344ca755 LP |
2594 | } |
2595 | } | |
2596 | } | |
2597 | ||
2598 | if (!has_vendor) | |
2599 | continue; | |
2600 | ||
2601 | /* OK, there's a vendor version, hence drop all configuration versions */ | |
c3e7fba0 | 2602 | STRV_FOREACH(p, lp.search_path) { |
344ca755 LP |
2603 | _cleanup_free_ char *path = NULL; |
2604 | struct stat st; | |
2605 | ||
0f87041f | 2606 | path = path_make_absolute(*name, *p); |
344ca755 LP |
2607 | if (!path) |
2608 | return -ENOMEM; | |
2609 | ||
81de6962 | 2610 | r = RET_NERRNO(lstat(path, &st)); |
344ca755 | 2611 | if (r < 0) { |
81de6962 ZJS |
2612 | if (r != -ENOENT) |
2613 | return install_changes_add(changes, n_changes, r, path, NULL); | |
344ca755 | 2614 | } else if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) { |
c3e7fba0 | 2615 | r = path_is_config(&lp, path, true); |
344ca755 | 2616 | if (r < 0) |
81de6962 | 2617 | return install_changes_add(changes, n_changes, r, path, NULL); |
344ca755 | 2618 | if (r > 0) { |
319a4f4b | 2619 | if (!GREEDY_REALLOC0(todo, n_todo + 2)) |
344ca755 LP |
2620 | return -ENOMEM; |
2621 | ||
1cc6c93a | 2622 | todo[n_todo++] = TAKE_PTR(path); |
344ca755 LP |
2623 | } |
2624 | } | |
2625 | } | |
2626 | } | |
2627 | ||
2628 | strv_uniq(todo); | |
2629 | ||
2630 | r = 0; | |
2631 | STRV_FOREACH(i, todo) { | |
2632 | _cleanup_strv_free_ char **fs = NULL; | |
2633 | const char *rp; | |
344ca755 LP |
2634 | |
2635 | (void) get_files_in_directory(*i, &fs); | |
2636 | ||
2637 | q = rm_rf(*i, REMOVE_ROOT|REMOVE_PHYSICAL); | |
2638 | if (q < 0 && q != -ENOENT && r >= 0) { | |
2639 | r = q; | |
2640 | continue; | |
2641 | } | |
2642 | ||
2643 | STRV_FOREACH(j, fs) { | |
2644 | _cleanup_free_ char *t = NULL; | |
2645 | ||
657ee2d8 | 2646 | t = path_join(*i, *j); |
344ca755 LP |
2647 | if (!t) |
2648 | return -ENOMEM; | |
2649 | ||
f31f10a6 ZJS |
2650 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_UNLINK, t, NULL); |
2651 | if (q < 0) | |
2652 | return q; | |
344ca755 LP |
2653 | } |
2654 | ||
f31f10a6 ZJS |
2655 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_UNLINK, *i, NULL); |
2656 | if (q < 0) | |
2657 | return q; | |
344ca755 | 2658 | |
c3e7fba0 | 2659 | rp = skip_root(lp.root_dir, *i); |
344ca755 LP |
2660 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: *i); |
2661 | if (q < 0) | |
2662 | return q; | |
2663 | } | |
2664 | ||
c3e7fba0 | 2665 | q = remove_marked_symlinks(remove_symlinks_to, lp.runtime_config, &lp, false, changes, n_changes); |
344ca755 LP |
2666 | if (r >= 0) |
2667 | r = q; | |
2668 | ||
c3e7fba0 | 2669 | q = remove_marked_symlinks(remove_symlinks_to, lp.persistent_config, &lp, false, changes, n_changes); |
344ca755 LP |
2670 | if (r >= 0) |
2671 | r = q; | |
2672 | ||
2673 | return r; | |
2674 | } | |
2675 | ||
0ec0deaa | 2676 | int unit_file_add_dependency( |
4870133b | 2677 | RuntimeScope scope, |
9b69770a | 2678 | UnitFileFlags file_flags, |
0ec0deaa | 2679 | const char *root_dir, |
0f87041f | 2680 | char **names, |
0ec0deaa LP |
2681 | const char *target, |
2682 | UnitDependency dep, | |
cd44ec5a | 2683 | InstallChange **changes, |
da6053d0 | 2684 | size_t *n_changes) { |
0ec0deaa | 2685 | |
c3e7fba0 | 2686 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
4a84db4c | 2687 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
0047d54d | 2688 | InstallInfo *info, *target_info; |
e1c5c2b0 | 2689 | const char *config_path; |
0ec0deaa LP |
2690 | int r; |
2691 | ||
2692 | assert(scope >= 0); | |
4870133b | 2693 | assert(scope < _RUNTIME_SCOPE_MAX); |
0ec0deaa | 2694 | assert(target); |
81de6962 | 2695 | assert(IN_SET(dep, UNIT_WANTS, UNIT_REQUIRES)); |
0ec0deaa LP |
2696 | |
2697 | if (!unit_name_is_valid(target, UNIT_NAME_ANY)) | |
81de6962 | 2698 | return install_changes_add(changes, n_changes, -EUCLEAN, target, NULL); |
0ec0deaa | 2699 | |
c3e7fba0 | 2700 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
0ec0deaa LP |
2701 | if (r < 0) |
2702 | return r; | |
2703 | ||
c3e7fba0 | 2704 | config_path = (file_flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
d0fd66a3 LP |
2705 | if (!config_path) |
2706 | return -ENXIO; | |
0ec0deaa | 2707 | |
4a84db4c | 2708 | r = install_info_discover_and_check(&ctx, &lp, target, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
1e475a0a | 2709 | &target_info, changes, n_changes); |
76adb5b8 LP |
2710 | if (r < 0) |
2711 | return r; | |
0ec0deaa | 2712 | |
91810c8f | 2713 | assert(target_info->install_mode == INSTALL_MODE_REGULAR); |
e94937df | 2714 | |
0f87041f | 2715 | STRV_FOREACH(name, names) { |
0ec0deaa LP |
2716 | char ***l; |
2717 | ||
0f87041f ZJS |
2718 | r = install_info_discover_and_check(&ctx, &lp, *name, |
2719 | SEARCH_FOLLOW_CONFIG_SYMLINKS, | |
4a84db4c | 2720 | &info, changes, n_changes); |
76adb5b8 LP |
2721 | if (r < 0) |
2722 | return r; | |
0ec0deaa | 2723 | |
91810c8f | 2724 | assert(info->install_mode == INSTALL_MODE_REGULAR); |
0ec0deaa LP |
2725 | |
2726 | /* We didn't actually load anything from the unit | |
2727 | * file, but instead just add in our new symlink to | |
2728 | * create. */ | |
e94937df LN |
2729 | |
2730 | if (dep == UNIT_WANTS) | |
4a84db4c | 2731 | l = &info->wanted_by; |
e94937df | 2732 | else |
4a84db4c | 2733 | l = &info->required_by; |
e94937df | 2734 | |
0ec0deaa | 2735 | strv_free(*l); |
bea1a013 | 2736 | *l = strv_new(target_info->name); |
0ec0deaa LP |
2737 | if (!*l) |
2738 | return -ENOMEM; | |
e94937df LN |
2739 | } |
2740 | ||
4a84db4c | 2741 | return install_context_apply(&ctx, &lp, file_flags, config_path, |
9b69770a | 2742 | SEARCH_FOLLOW_CONFIG_SYMLINKS, changes, n_changes); |
e94937df LN |
2743 | } |
2744 | ||
ec7eaff3 ZJS |
2745 | static int do_unit_file_enable( |
2746 | const LookupPaths *lp, | |
4870133b | 2747 | RuntimeScope scope, |
ec7eaff3 ZJS |
2748 | UnitFileFlags flags, |
2749 | const char *config_path, | |
0f87041f | 2750 | char **names_or_paths, |
cd44ec5a | 2751 | InstallChange **changes, |
da6053d0 | 2752 | size_t *n_changes) { |
83096483 | 2753 | |
4a84db4c | 2754 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
0047d54d | 2755 | InstallInfo *info; |
83096483 LP |
2756 | int r; |
2757 | ||
0f87041f ZJS |
2758 | STRV_FOREACH(name, names_or_paths) { |
2759 | r = install_info_discover_and_check(&ctx, lp, *name, | |
2760 | SEARCH_LOAD | SEARCH_FOLLOW_CONFIG_SYMLINKS, | |
4a84db4c | 2761 | &info, changes, n_changes); |
76adb5b8 LP |
2762 | if (r < 0) |
2763 | return r; | |
0ec0deaa | 2764 | |
91810c8f | 2765 | assert(info->install_mode == INSTALL_MODE_REGULAR); |
83096483 LP |
2766 | } |
2767 | ||
729e3769 | 2768 | /* This will return the number of symlink rules that were |
d25e100b | 2769 | supposed to be created, not the ones actually created. This |
0f87041f | 2770 | is useful to determine whether the passed units had any |
d25e100b | 2771 | installation data at all. */ |
b91a3b02 | 2772 | |
ec7eaff3 | 2773 | return install_context_apply(&ctx, lp, flags, config_path, |
4a84db4c | 2774 | SEARCH_LOAD, changes, n_changes); |
83096483 LP |
2775 | } |
2776 | ||
ec7eaff3 | 2777 | int unit_file_enable( |
4870133b | 2778 | RuntimeScope scope, |
b3796dd8 | 2779 | UnitFileFlags flags, |
83096483 | 2780 | const char *root_dir, |
0f87041f | 2781 | char **names_or_paths, |
cd44ec5a | 2782 | InstallChange **changes, |
da6053d0 | 2783 | size_t *n_changes) { |
83096483 | 2784 | |
c3e7fba0 | 2785 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
0ec0deaa | 2786 | int r; |
83096483 LP |
2787 | |
2788 | assert(scope >= 0); | |
4870133b | 2789 | assert(scope < _RUNTIME_SCOPE_MAX); |
83096483 | 2790 | |
c3e7fba0 | 2791 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
83096483 LP |
2792 | if (r < 0) |
2793 | return r; | |
2794 | ||
ec7eaff3 | 2795 | const char *config_path = config_path_from_flags(&lp, flags); |
1830ac51 MB |
2796 | if (!config_path) |
2797 | return -ENXIO; | |
2798 | ||
0f87041f | 2799 | return do_unit_file_enable(&lp, scope, flags, config_path, names_or_paths, changes, n_changes); |
ec7eaff3 ZJS |
2800 | } |
2801 | ||
2802 | static int do_unit_file_disable( | |
2803 | const LookupPaths *lp, | |
4870133b | 2804 | RuntimeScope scope, |
ec7eaff3 ZJS |
2805 | UnitFileFlags flags, |
2806 | const char *config_path, | |
0f87041f | 2807 | char **names, |
cd44ec5a | 2808 | InstallChange **changes, |
ec7eaff3 ZJS |
2809 | size_t *n_changes) { |
2810 | ||
2811 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; | |
2812 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
bf1bea43 MY |
2813 | InstallInfo *info; |
2814 | bool has_install_info = false; | |
ec7eaff3 ZJS |
2815 | int r; |
2816 | ||
0f87041f ZJS |
2817 | STRV_FOREACH(name, names) { |
2818 | if (!unit_name_is_valid(*name, UNIT_NAME_ANY)) | |
81de6962 | 2819 | return install_changes_add(changes, n_changes, -EUCLEAN, *name, NULL); |
0ec0deaa | 2820 | |
bf1bea43 MY |
2821 | r = install_info_add(&ctx, *name, NULL, lp->root_dir, /* auxiliary= */ false, &info); |
2822 | if (r >= 0) | |
2823 | r = install_info_traverse(&ctx, lp, info, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, NULL); | |
2824 | ||
83096483 | 2825 | if (r < 0) |
bf1bea43 MY |
2826 | return install_changes_add(changes, n_changes, r, *name, NULL); |
2827 | ||
2828 | /* If we enable multiple units, some with install info and others without, | |
2829 | * the "empty [Install] section" warning is not shown. Let's make the behavior | |
2830 | * of disable align with that. */ | |
2831 | has_install_info = has_install_info || install_info_has_rules(info) || install_info_has_also(info); | |
83096483 LP |
2832 | } |
2833 | ||
ec7eaff3 | 2834 | r = install_context_mark_for_removal(&ctx, lp, &remove_symlinks_to, config_path, changes, n_changes); |
bf1bea43 MY |
2835 | if (r >= 0) |
2836 | r = remove_marked_symlinks(remove_symlinks_to, config_path, lp, flags & UNIT_FILE_DRY_RUN, changes, n_changes); | |
2837 | ||
0ec0deaa LP |
2838 | if (r < 0) |
2839 | return r; | |
83096483 | 2840 | |
bf1bea43 MY |
2841 | /* The warning is shown only if it's a no-op */ |
2842 | return install_changes_have_modification(*changes, *n_changes) || has_install_info; | |
83096483 LP |
2843 | } |
2844 | ||
ec7eaff3 | 2845 | int unit_file_disable( |
4870133b | 2846 | RuntimeScope scope, |
b3796dd8 | 2847 | UnitFileFlags flags, |
83096483 | 2848 | const char *root_dir, |
7195aa42 | 2849 | char **files, |
cd44ec5a | 2850 | InstallChange **changes, |
da6053d0 | 2851 | size_t *n_changes) { |
0ec0deaa | 2852 | |
ec7eaff3 | 2853 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
92d430a9 | 2854 | int r; |
ec7eaff3 ZJS |
2855 | |
2856 | assert(scope >= 0); | |
4870133b | 2857 | assert(scope < _RUNTIME_SCOPE_MAX); |
ec7eaff3 ZJS |
2858 | |
2859 | r = lookup_paths_init(&lp, scope, 0, root_dir); | |
2860 | if (r < 0) | |
2861 | return r; | |
2862 | ||
2863 | const char *config_path = config_path_from_flags(&lp, flags); | |
2864 | if (!config_path) | |
2865 | return -ENXIO; | |
2866 | ||
2867 | return do_unit_file_disable(&lp, scope, flags, config_path, files, changes, n_changes); | |
2868 | } | |
2869 | ||
29a7c59a | 2870 | static int normalize_linked_files( |
4870133b | 2871 | RuntimeScope scope, |
29a7c59a ZJS |
2872 | const LookupPaths *lp, |
2873 | char **names_or_paths, | |
2874 | char ***ret_names, | |
2875 | char ***ret_files) { | |
2876 | ||
2877 | /* This is similar to normalize_filenames()/normalize_names() in src/systemctl/, | |
30fd9a2d | 2878 | * but operates on real unit names. For each argument we look up the actual path |
8b7378e1 | 2879 | * where the unit is found. This way linked units can be re-enabled successfully. */ |
29a7c59a | 2880 | |
0b6bf4b6 | 2881 | _cleanup_strv_free_ char **files = NULL, **names = NULL; |
29a7c59a ZJS |
2882 | int r; |
2883 | ||
2884 | STRV_FOREACH(a, names_or_paths) { | |
2885 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; | |
0047d54d | 2886 | InstallInfo *i = NULL; |
29a7c59a ZJS |
2887 | _cleanup_free_ char *n = NULL; |
2888 | ||
2889 | r = path_extract_filename(*a, &n); | |
2890 | if (r < 0) | |
2891 | return r; | |
2892 | if (r == O_DIRECTORY) | |
2893 | return log_debug_errno(SYNTHETIC_ERRNO(EISDIR), | |
2894 | "Unexpected path to a directory \"%s\", refusing.", *a); | |
2895 | ||
2896 | if (!is_path(*a)) { | |
2897 | r = install_info_discover(&ctx, lp, n, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, &i, NULL, NULL); | |
2898 | if (r < 0) | |
2899 | log_debug_errno(r, "Failed to discover unit \"%s\", operating on name: %m", n); | |
2900 | } | |
2901 | ||
2902 | r = strv_consume(&names, TAKE_PTR(n)); | |
2903 | if (r < 0) | |
2904 | return r; | |
2905 | ||
2906 | const char *p = NULL; | |
6e961aeb | 2907 | if (i && i->path && i->root) |
29a7c59a ZJS |
2908 | /* Use startswith here, because we know that paths are normalized, and |
2909 | * path_startswith() would give us a relative path, but we need an absolute path | |
2910 | * relative to i->root. | |
2911 | * | |
2912 | * In other words: /var/tmp/instroot.1234/etc/systemd/system/frobnicator.service | |
2913 | * is replaced by /etc/systemd/system/frobnicator.service, which is "absolute" | |
2914 | * in a sense, but only makes sense "relative" to /var/tmp/instroot.1234/. | |
2915 | */ | |
2916 | p = startswith(i->path, i->root); | |
2917 | ||
2918 | r = strv_extend(&files, p ?: *a); | |
2919 | if (r < 0) | |
2920 | return r; | |
2921 | } | |
2922 | ||
2923 | *ret_names = TAKE_PTR(names); | |
2924 | *ret_files = TAKE_PTR(files); | |
2925 | return 0; | |
2926 | } | |
2927 | ||
ec7eaff3 | 2928 | int unit_file_reenable( |
4870133b | 2929 | RuntimeScope scope, |
ec7eaff3 ZJS |
2930 | UnitFileFlags flags, |
2931 | const char *root_dir, | |
29a7c59a | 2932 | char **names_or_paths, |
cd44ec5a | 2933 | InstallChange **changes, |
ec7eaff3 ZJS |
2934 | size_t *n_changes) { |
2935 | ||
2936 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; | |
29a7c59a | 2937 | _cleanup_strv_free_ char **names = NULL, **files = NULL; |
ec7eaff3 ZJS |
2938 | int r; |
2939 | ||
2940 | assert(scope >= 0); | |
4870133b | 2941 | assert(scope < _RUNTIME_SCOPE_MAX); |
ec7eaff3 ZJS |
2942 | |
2943 | r = lookup_paths_init(&lp, scope, 0, root_dir); | |
2944 | if (r < 0) | |
2945 | return r; | |
2946 | ||
2947 | const char *config_path = config_path_from_flags(&lp, flags); | |
2948 | if (!config_path) | |
2949 | return -ENXIO; | |
83096483 | 2950 | |
29a7c59a ZJS |
2951 | r = normalize_linked_files(scope, &lp, names_or_paths, &names, &files); |
2952 | if (r < 0) | |
2953 | return r; | |
0ec0deaa | 2954 | |
29a7c59a | 2955 | /* First, we invoke the disable command with only the basename... */ |
ec7eaff3 | 2956 | r = do_unit_file_disable(&lp, scope, flags, config_path, names, changes, n_changes); |
83096483 | 2957 | if (r < 0) |
d9e5e694 | 2958 | return r; |
83096483 | 2959 | |
0ec0deaa | 2960 | /* But the enable command with the full name */ |
ec7eaff3 | 2961 | return do_unit_file_enable(&lp, scope, flags, config_path, files, changes, n_changes); |
83096483 LP |
2962 | } |
2963 | ||
99504dd4 | 2964 | int unit_file_set_default( |
4870133b | 2965 | RuntimeScope scope, |
b3796dd8 | 2966 | UnitFileFlags flags, |
99504dd4 | 2967 | const char *root_dir, |
0ec0deaa | 2968 | const char *name, |
cd44ec5a | 2969 | InstallChange **changes, |
da6053d0 | 2970 | size_t *n_changes) { |
99504dd4 | 2971 | |
c3e7fba0 | 2972 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
4a84db4c | 2973 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
0047d54d | 2974 | InstallInfo *info; |
60bec8e4 | 2975 | const char *new_path; |
99504dd4 | 2976 | int r; |
99504dd4 VP |
2977 | |
2978 | assert(scope >= 0); | |
4870133b | 2979 | assert(scope < _RUNTIME_SCOPE_MAX); |
0ec0deaa | 2980 | assert(name); |
99504dd4 | 2981 | |
401017e0 | 2982 | if (unit_name_to_type(name) != UNIT_TARGET) /* this also validates the name */ |
0ec0deaa LP |
2983 | return -EINVAL; |
2984 | if (streq(name, SPECIAL_DEFAULT_TARGET)) | |
99504dd4 VP |
2985 | return -EINVAL; |
2986 | ||
c3e7fba0 | 2987 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
99504dd4 VP |
2988 | if (r < 0) |
2989 | return r; | |
2990 | ||
4a84db4c | 2991 | r = install_info_discover_and_check(&ctx, &lp, name, 0, &info, changes, n_changes); |
76adb5b8 LP |
2992 | if (r < 0) |
2993 | return r; | |
99504dd4 | 2994 | |
c3e7fba0 | 2995 | new_path = strjoina(lp.persistent_config, "/" SPECIAL_DEFAULT_TARGET); |
9aa3d6b4 | 2996 | return create_symlink(&lp, info->path, new_path, flags & UNIT_FILE_FORCE, changes, n_changes); |
99504dd4 VP |
2997 | } |
2998 | ||
2999 | int unit_file_get_default( | |
4870133b | 3000 | RuntimeScope scope, |
99504dd4 VP |
3001 | const char *root_dir, |
3002 | char **name) { | |
3003 | ||
c3e7fba0 | 3004 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
4a84db4c | 3005 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
0047d54d | 3006 | InstallInfo *info; |
0ec0deaa | 3007 | char *n; |
99504dd4 VP |
3008 | int r; |
3009 | ||
16ed0233 | 3010 | assert(scope >= 0); |
4870133b | 3011 | assert(scope < _RUNTIME_SCOPE_MAX); |
16ed0233 LP |
3012 | assert(name); |
3013 | ||
c3e7fba0 | 3014 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
0ec0deaa LP |
3015 | if (r < 0) |
3016 | return r; | |
99504dd4 | 3017 | |
4a84db4c ZJS |
3018 | r = install_info_discover(&ctx, &lp, SPECIAL_DEFAULT_TARGET, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3019 | &info, NULL, NULL); | |
0ec0deaa LP |
3020 | if (r < 0) |
3021 | return r; | |
4a84db4c | 3022 | r = install_info_may_process(info, &lp, NULL, 0); |
76adb5b8 LP |
3023 | if (r < 0) |
3024 | return r; | |
99504dd4 | 3025 | |
4a84db4c | 3026 | n = strdup(info->name); |
0ec0deaa LP |
3027 | if (!n) |
3028 | return -ENOMEM; | |
99504dd4 | 3029 | |
0ec0deaa LP |
3030 | *name = n; |
3031 | return 0; | |
99504dd4 VP |
3032 | } |
3033 | ||
d6d98276 | 3034 | int unit_file_lookup_state( |
4870133b | 3035 | RuntimeScope scope, |
c3e7fba0 | 3036 | const LookupPaths *lp, |
0ec0deaa LP |
3037 | const char *name, |
3038 | UnitFileState *ret) { | |
83096483 | 3039 | |
4a84db4c | 3040 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
0047d54d | 3041 | InstallInfo *info; |
0ec0deaa LP |
3042 | UnitFileState state; |
3043 | int r; | |
83096483 | 3044 | |
c3e7fba0 | 3045 | assert(lp); |
0ec0deaa | 3046 | assert(name); |
83096483 | 3047 | |
7410616c | 3048 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
83096483 LP |
3049 | return -EINVAL; |
3050 | ||
4a84db4c ZJS |
3051 | r = install_info_discover(&ctx, lp, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3052 | &info, NULL, NULL); | |
0ec0deaa | 3053 | if (r < 0) |
3e8d06d9 ZJS |
3054 | return log_debug_errno(r, "Failed to discover unit %s: %m", name); |
3055 | ||
91810c8f | 3056 | assert(IN_SET(info->install_mode, INSTALL_MODE_REGULAR, INSTALL_MODE_MASKED)); |
4a84db4c | 3057 | log_debug("Found unit %s at %s (%s)", name, strna(info->path), |
91810c8f | 3058 | info->install_mode == INSTALL_MODE_REGULAR ? "regular file" : "mask"); |
83096483 | 3059 | |
0ec0deaa LP |
3060 | /* Shortcut things, if the caller just wants to know if this unit exists. */ |
3061 | if (!ret) | |
3062 | return 0; | |
83096483 | 3063 | |
91810c8f | 3064 | switch (info->install_mode) { |
67820a0c | 3065 | |
318031fd | 3066 | case INSTALL_MODE_MASKED: |
4a84db4c | 3067 | r = path_is_runtime(lp, info->path, true); |
385eb996 LP |
3068 | if (r < 0) |
3069 | return r; | |
3070 | ||
3071 | state = r > 0 ? UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED; | |
0ec0deaa | 3072 | break; |
83096483 | 3073 | |
318031fd | 3074 | case INSTALL_MODE_REGULAR: |
15d7ab87 | 3075 | /* Check if the name we were querying is actually an alias */ |
4a84db4c | 3076 | if (!streq(name, basename(info->path)) && !unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { |
15d7ab87 ZJS |
3077 | state = UNIT_FILE_ALIAS; |
3078 | break; | |
3079 | } | |
3080 | ||
4a84db4c | 3081 | r = path_is_generator(lp, info->path); |
f4139308 LP |
3082 | if (r < 0) |
3083 | return r; | |
3084 | if (r > 0) { | |
3085 | state = UNIT_FILE_GENERATED; | |
3086 | break; | |
3087 | } | |
3088 | ||
4a84db4c | 3089 | r = path_is_transient(lp, info->path); |
e4fca67f LP |
3090 | if (r < 0) |
3091 | return r; | |
3092 | if (r > 0) { | |
3093 | state = UNIT_FILE_TRANSIENT; | |
3094 | break; | |
3095 | } | |
3096 | ||
5cd8ae31 ZJS |
3097 | /* Check if any of the Alias= symlinks have been created. |
3098 | * We ignore other aliases, and only check those that would | |
3099 | * be created by systemctl enable for this unit. */ | |
4a84db4c | 3100 | r = find_symlinks_in_scope(scope, lp, info, true, &state); |
d9b4b48f ZJS |
3101 | if (r < 0) |
3102 | return r; | |
3103 | if (r > 0) | |
3104 | break; | |
3105 | ||
3106 | /* Check if the file is known under other names. If it is, | |
3107 | * it might be in use. Report that as UNIT_FILE_INDIRECT. */ | |
4a84db4c | 3108 | r = find_symlinks_in_scope(scope, lp, info, false, &state); |
d9e5e694 ZJS |
3109 | if (r < 0) |
3110 | return r; | |
d9b4b48f ZJS |
3111 | if (r > 0) |
3112 | state = UNIT_FILE_INDIRECT; | |
3113 | else { | |
0047d54d | 3114 | if (install_info_has_rules(info)) |
0ec0deaa | 3115 | state = UNIT_FILE_DISABLED; |
0047d54d | 3116 | else if (install_info_has_also(info)) |
0ec0deaa LP |
3117 | state = UNIT_FILE_INDIRECT; |
3118 | else | |
3119 | state = UNIT_FILE_STATIC; | |
3120 | } | |
83096483 | 3121 | |
0ec0deaa LP |
3122 | break; |
3123 | ||
3124 | default: | |
04499a70 | 3125 | assert_not_reached(); |
83096483 LP |
3126 | } |
3127 | ||
0ec0deaa LP |
3128 | *ret = state; |
3129 | return 0; | |
83096483 LP |
3130 | } |
3131 | ||
0ec0deaa | 3132 | int unit_file_get_state( |
4870133b | 3133 | RuntimeScope scope, |
a8ffe6fb | 3134 | const char *root_dir, |
0ec0deaa LP |
3135 | const char *name, |
3136 | UnitFileState *ret) { | |
a8ffe6fb | 3137 | |
c3e7fba0 | 3138 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
a8ffe6fb ZJS |
3139 | int r; |
3140 | ||
3141 | assert(scope >= 0); | |
4870133b | 3142 | assert(scope < _RUNTIME_SCOPE_MAX); |
a8ffe6fb ZJS |
3143 | assert(name); |
3144 | ||
c3e7fba0 | 3145 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
a8ffe6fb ZJS |
3146 | if (r < 0) |
3147 | return r; | |
3148 | ||
c3e7fba0 | 3149 | return unit_file_lookup_state(scope, &lp, name, ret); |
a8ffe6fb ZJS |
3150 | } |
3151 | ||
4870133b | 3152 | int unit_file_exists(RuntimeScope scope, const LookupPaths *lp, const char *name) { |
4a84db4c | 3153 | _cleanup_(install_context_done) InstallContext c = { .scope = scope }; |
e735decc LP |
3154 | int r; |
3155 | ||
c3e7fba0 | 3156 | assert(lp); |
e735decc LP |
3157 | assert(name); |
3158 | ||
3159 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) | |
3160 | return -EINVAL; | |
3161 | ||
4a84db4c | 3162 | r = install_info_discover(&c, lp, name, 0, NULL, NULL, NULL); |
e735decc LP |
3163 | if (r == -ENOENT) |
3164 | return 0; | |
3165 | if (r < 0) | |
3166 | return r; | |
3167 | ||
3168 | return 1; | |
3169 | } | |
3170 | ||
4c9565ee RB |
3171 | static int split_pattern_into_name_and_instances(const char *pattern, char **out_unit_name, char ***out_instances) { |
3172 | _cleanup_strv_free_ char **instances = NULL; | |
3173 | _cleanup_free_ char *unit_name = NULL; | |
3174 | int r; | |
3175 | ||
3176 | assert(pattern); | |
3177 | assert(out_instances); | |
3178 | assert(out_unit_name); | |
3179 | ||
82bd4da7 | 3180 | r = extract_first_word(&pattern, &unit_name, NULL, EXTRACT_RETAIN_ESCAPE); |
4c9565ee RB |
3181 | if (r < 0) |
3182 | return r; | |
3183 | ||
3184 | /* We handle the instances logic when unit name is extracted */ | |
3185 | if (pattern) { | |
3186 | /* We only create instances when a rule of templated unit | |
3187 | * is seen. A rule like enable foo@.service a b c will | |
3188 | * result in an array of (a, b, c) as instance names */ | |
3189 | if (!unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) | |
3190 | return -EINVAL; | |
3191 | ||
3192 | instances = strv_split(pattern, WHITESPACE); | |
3193 | if (!instances) | |
3194 | return -ENOMEM; | |
3195 | ||
3196 | *out_instances = TAKE_PTR(instances); | |
3197 | } | |
3198 | ||
3199 | *out_unit_name = TAKE_PTR(unit_name); | |
3200 | ||
3201 | return 0; | |
3202 | } | |
3203 | ||
4870133b | 3204 | static int presets_find_config(RuntimeScope scope, const char *root_dir, char ***files) { |
10fd1d46 ZJS |
3205 | static const char* const system_dirs[] = {CONF_PATHS("systemd/system-preset"), NULL}; |
3206 | static const char* const user_dirs[] = {CONF_PATHS_USR("systemd/user-preset"), NULL}; | |
f7767d76 | 3207 | const char* const* dirs; |
83096483 LP |
3208 | |
3209 | assert(scope >= 0); | |
4870133b | 3210 | assert(scope < _RUNTIME_SCOPE_MAX); |
0ec0deaa | 3211 | |
4870133b | 3212 | if (scope == RUNTIME_SCOPE_SYSTEM) |
10fd1d46 | 3213 | dirs = system_dirs; |
4870133b | 3214 | else if (IN_SET(scope, RUNTIME_SCOPE_GLOBAL, RUNTIME_SCOPE_USER)) |
10fd1d46 | 3215 | dirs = user_dirs; |
a05294ff | 3216 | else |
04499a70 | 3217 | assert_not_reached(); |
83096483 | 3218 | |
f7767d76 | 3219 | return conf_files_list_strv(files, ".preset", root_dir, 0, dirs); |
e0b8a238 ZJS |
3220 | } |
3221 | ||
4870133b | 3222 | static int read_presets(RuntimeScope scope, const char *root_dir, UnitFilePresets *presets) { |
05cdf6a7 | 3223 | _cleanup_(unit_file_presets_done) UnitFilePresets ps = {}; |
e0b8a238 | 3224 | _cleanup_strv_free_ char **files = NULL; |
e0b8a238 ZJS |
3225 | int r; |
3226 | ||
3227 | assert(scope >= 0); | |
4870133b | 3228 | assert(scope < _RUNTIME_SCOPE_MAX); |
e0b8a238 ZJS |
3229 | assert(presets); |
3230 | ||
3231 | r = presets_find_config(scope, root_dir, &files); | |
83096483 LP |
3232 | if (r < 0) |
3233 | return r; | |
3234 | ||
cba2ef02 | 3235 | STRV_FOREACH(p, files) { |
c2b2df60 | 3236 | _cleanup_fclose_ FILE *f = NULL; |
d544d1a4 | 3237 | int n = 0; |
83096483 | 3238 | |
cba2ef02 | 3239 | f = fopen(*p, "re"); |
83096483 LP |
3240 | if (!f) { |
3241 | if (errno == ENOENT) | |
3242 | continue; | |
3243 | ||
d9e5e694 | 3244 | return -errno; |
83096483 LP |
3245 | } |
3246 | ||
bef77f37 LP |
3247 | for (;;) { |
3248 | _cleanup_free_ char *line = NULL; | |
52c788e6 | 3249 | _cleanup_(unit_file_preset_rule_done) UnitFilePresetRule rule = {}; |
0ec0deaa LP |
3250 | const char *parameter; |
3251 | char *l; | |
83096483 | 3252 | |
bef77f37 LP |
3253 | r = read_line(f, LONG_LINE_MAX, &line); |
3254 | if (r < 0) | |
3255 | return r; | |
3256 | if (r == 0) | |
3257 | break; | |
3258 | ||
83096483 | 3259 | l = strstrip(line); |
d544d1a4 | 3260 | n++; |
83096483 | 3261 | |
0ec0deaa LP |
3262 | if (isempty(l)) |
3263 | continue; | |
3264 | if (strchr(COMMENTS, *l)) | |
83096483 LP |
3265 | continue; |
3266 | ||
0ec0deaa LP |
3267 | parameter = first_word(l, "enable"); |
3268 | if (parameter) { | |
4c9565ee RB |
3269 | char *unit_name; |
3270 | char **instances = NULL; | |
d9e5e694 | 3271 | |
4c9565ee RB |
3272 | /* Unit_name will remain the same as parameter when no instances are specified */ |
3273 | r = split_pattern_into_name_and_instances(parameter, &unit_name, &instances); | |
3274 | if (r < 0) { | |
8ac3c9ab | 3275 | log_syntax(NULL, LOG_WARNING, *p, n, r, "Couldn't parse line '%s'. Ignoring.", line); |
4c9565ee RB |
3276 | continue; |
3277 | } | |
8965d9f8 | 3278 | |
8f7b2566 | 3279 | rule = (UnitFilePresetRule) { |
4c9565ee | 3280 | .pattern = unit_name, |
8965d9f8 | 3281 | .action = PRESET_ENABLE, |
4c9565ee | 3282 | .instances = instances, |
8965d9f8 | 3283 | }; |
0ec0deaa | 3284 | } |
83096483 | 3285 | |
0ec0deaa LP |
3286 | parameter = first_word(l, "disable"); |
3287 | if (parameter) { | |
8965d9f8 | 3288 | char *pattern; |
d9e5e694 | 3289 | |
8965d9f8 AC |
3290 | pattern = strdup(parameter); |
3291 | if (!pattern) | |
3292 | return -ENOMEM; | |
3293 | ||
8f7b2566 | 3294 | rule = (UnitFilePresetRule) { |
8965d9f8 AC |
3295 | .pattern = pattern, |
3296 | .action = PRESET_DISABLE, | |
3297 | }; | |
3298 | } | |
3299 | ||
3300 | if (rule.action) { | |
319a4f4b | 3301 | if (!GREEDY_REALLOC(ps.rules, ps.n_rules + 1)) |
8965d9f8 AC |
3302 | return -ENOMEM; |
3303 | ||
52c788e6 | 3304 | ps.rules[ps.n_rules++] = TAKE_STRUCT(rule); |
0ec0deaa LP |
3305 | continue; |
3306 | } | |
3307 | ||
d544d1a4 | 3308 | log_syntax(NULL, LOG_WARNING, *p, n, 0, "Couldn't parse line '%s'. Ignoring.", line); |
83096483 | 3309 | } |
83096483 LP |
3310 | } |
3311 | ||
8f7b2566 | 3312 | ps.initialized = true; |
088d71f8 | 3313 | *presets = TAKE_STRUCT(ps); |
8965d9f8 AC |
3314 | |
3315 | return 0; | |
3316 | } | |
3317 | ||
4c9565ee | 3318 | static int pattern_match_multiple_instances( |
8f7b2566 | 3319 | const UnitFilePresetRule rule, |
4c9565ee RB |
3320 | const char *unit_name, |
3321 | char ***ret) { | |
3322 | ||
3323 | _cleanup_free_ char *templated_name = NULL; | |
3324 | int r; | |
3325 | ||
3326 | /* If no ret is needed or the rule itself does not have instances | |
5238e957 | 3327 | * initialized, we return not matching */ |
4c9565ee RB |
3328 | if (!ret || !rule.instances) |
3329 | return 0; | |
3330 | ||
3331 | r = unit_name_template(unit_name, &templated_name); | |
3332 | if (r < 0) | |
3333 | return r; | |
3334 | if (!streq(rule.pattern, templated_name)) | |
3335 | return 0; | |
3336 | ||
3337 | /* Compose a list of specified instances when unit name is a template */ | |
3338 | if (unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) { | |
4c9565ee | 3339 | _cleanup_strv_free_ char **out_strv = NULL; |
4c9565ee RB |
3340 | |
3341 | STRV_FOREACH(iter, rule.instances) { | |
3342 | _cleanup_free_ char *name = NULL; | |
47ab95fe ZJS |
3343 | |
3344 | r = unit_name_replace_instance(unit_name, *iter, &name); | |
4c9565ee RB |
3345 | if (r < 0) |
3346 | return r; | |
47ab95fe ZJS |
3347 | |
3348 | r = strv_consume(&out_strv, TAKE_PTR(name)); | |
4c9565ee RB |
3349 | if (r < 0) |
3350 | return r; | |
3351 | } | |
3352 | ||
3353 | *ret = TAKE_PTR(out_strv); | |
3354 | return 1; | |
3355 | } else { | |
3356 | /* We now know the input unit name is an instance name */ | |
3357 | _cleanup_free_ char *instance_name = NULL; | |
3358 | ||
3359 | r = unit_name_to_instance(unit_name, &instance_name); | |
3360 | if (r < 0) | |
3361 | return r; | |
3362 | ||
3363 | if (strv_find(rule.instances, instance_name)) | |
3364 | return 1; | |
3365 | } | |
3366 | return 0; | |
3367 | } | |
3368 | ||
8f7b2566 | 3369 | static int query_presets(const char *name, const UnitFilePresets *presets, char ***instance_name_list) { |
8965d9f8 | 3370 | PresetAction action = PRESET_UNKNOWN; |
de8be28e | 3371 | |
8965d9f8 AC |
3372 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
3373 | return -EINVAL; | |
3374 | ||
de8be28e | 3375 | for (size_t i = 0; i < presets->n_rules; i++) |
8f7b2566 ZJS |
3376 | if (pattern_match_multiple_instances(presets->rules[i], name, instance_name_list) > 0 || |
3377 | fnmatch(presets->rules[i].pattern, name, FNM_NOESCAPE) == 0) { | |
3378 | action = presets->rules[i].action; | |
8965d9f8 AC |
3379 | break; |
3380 | } | |
3381 | ||
3382 | switch (action) { | |
3383 | case PRESET_UNKNOWN: | |
3384 | log_debug("Preset files don't specify rule for %s. Enabling.", name); | |
3385 | return 1; | |
3386 | case PRESET_ENABLE: | |
de010b0b | 3387 | if (instance_name_list && *instance_name_list) |
4c9565ee RB |
3388 | STRV_FOREACH(s, *instance_name_list) |
3389 | log_debug("Preset files say enable %s.", *s); | |
de010b0b | 3390 | else |
4c9565ee | 3391 | log_debug("Preset files say enable %s.", name); |
8965d9f8 AC |
3392 | return 1; |
3393 | case PRESET_DISABLE: | |
3394 | log_debug("Preset files say disable %s.", name); | |
3395 | return 0; | |
3396 | default: | |
04499a70 | 3397 | assert_not_reached(); |
8965d9f8 AC |
3398 | } |
3399 | } | |
3400 | ||
4870133b | 3401 | int unit_file_query_preset(RuntimeScope scope, const char *root_dir, const char *name, UnitFilePresets *cached) { |
05cdf6a7 | 3402 | _cleanup_(unit_file_presets_done) UnitFilePresets tmp = {}; |
8965d9f8 AC |
3403 | int r; |
3404 | ||
8f7b2566 ZJS |
3405 | if (!cached) |
3406 | cached = &tmp; | |
3407 | if (!cached->initialized) { | |
3408 | r = read_presets(scope, root_dir, cached); | |
3409 | if (r < 0) | |
3410 | return r; | |
3411 | } | |
8965d9f8 | 3412 | |
8f7b2566 | 3413 | return query_presets(name, cached, NULL); |
83096483 LP |
3414 | } |
3415 | ||
0ec0deaa | 3416 | static int execute_preset( |
9b69770a | 3417 | UnitFileFlags file_flags, |
0ec0deaa LP |
3418 | InstallContext *plus, |
3419 | InstallContext *minus, | |
c3e7fba0 | 3420 | const LookupPaths *lp, |
1830ac51 | 3421 | const char *config_path, |
0ec0deaa LP |
3422 | char **files, |
3423 | UnitFilePresetMode mode, | |
cd44ec5a | 3424 | InstallChange **changes, |
da6053d0 | 3425 | size_t *n_changes) { |
0ec0deaa | 3426 | |
1830ac51 | 3427 | int r; |
0ec0deaa LP |
3428 | |
3429 | assert(plus); | |
3430 | assert(minus); | |
c3e7fba0 | 3431 | assert(lp); |
1830ac51 | 3432 | assert(config_path); |
0ec0deaa LP |
3433 | |
3434 | if (mode != UNIT_FILE_PRESET_ENABLE_ONLY) { | |
3435 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
3436 | ||
4a84db4c | 3437 | r = install_context_mark_for_removal(minus, lp, &remove_symlinks_to, config_path, changes, n_changes); |
1830ac51 MB |
3438 | if (r < 0) |
3439 | return r; | |
0ec0deaa | 3440 | |
c3e7fba0 | 3441 | r = remove_marked_symlinks(remove_symlinks_to, config_path, lp, false, changes, n_changes); |
1830ac51 MB |
3442 | } else |
3443 | r = 0; | |
0ec0deaa LP |
3444 | |
3445 | if (mode != UNIT_FILE_PRESET_DISABLE_ONLY) { | |
1830ac51 MB |
3446 | int q; |
3447 | ||
0ec0deaa | 3448 | /* Returns number of symlinks that where supposed to be installed. */ |
4a84db4c | 3449 | q = install_context_apply(plus, lp, |
ad5fdd39 | 3450 | file_flags | UNIT_FILE_IGNORE_AUXILIARY_FAILURE, |
4a84db4c ZJS |
3451 | config_path, |
3452 | SEARCH_LOAD, changes, n_changes); | |
1830ac51 MB |
3453 | if (r >= 0) { |
3454 | if (q < 0) | |
3455 | r = q; | |
3456 | else | |
3457 | r += q; | |
3458 | } | |
0ec0deaa LP |
3459 | } |
3460 | ||
3461 | return r; | |
3462 | } | |
3463 | ||
3464 | static int preset_prepare_one( | |
4870133b | 3465 | RuntimeScope scope, |
0ec0deaa LP |
3466 | InstallContext *plus, |
3467 | InstallContext *minus, | |
c3e7fba0 | 3468 | LookupPaths *lp, |
af3d8113 | 3469 | const char *name, |
8f7b2566 | 3470 | const UnitFilePresets *presets, |
cd44ec5a | 3471 | InstallChange **changes, |
da6053d0 | 3472 | size_t *n_changes) { |
0ec0deaa | 3473 | |
4a84db4c | 3474 | _cleanup_(install_context_done) InstallContext tmp = { .scope = scope }; |
4c9565ee | 3475 | _cleanup_strv_free_ char **instance_name_list = NULL; |
0047d54d | 3476 | InstallInfo *info; |
0ec0deaa LP |
3477 | int r; |
3478 | ||
11e11fd5 | 3479 | if (install_info_find(plus, name) || install_info_find(minus, name)) |
0ec0deaa LP |
3480 | return 0; |
3481 | ||
4a84db4c ZJS |
3482 | r = install_info_discover(&tmp, lp, name, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3483 | &info, changes, n_changes); | |
11e11fd5 ZJS |
3484 | if (r < 0) |
3485 | return r; | |
4a84db4c ZJS |
3486 | if (!streq(name, info->name)) { |
3487 | log_debug("Skipping %s because it is an alias for %s.", name, info->name); | |
11e11fd5 ZJS |
3488 | return 0; |
3489 | } | |
3490 | ||
4c9565ee | 3491 | r = query_presets(name, presets, &instance_name_list); |
0ec0deaa LP |
3492 | if (r < 0) |
3493 | return r; | |
3494 | ||
3495 | if (r > 0) { | |
de010b0b | 3496 | if (instance_name_list) |
4c9565ee | 3497 | STRV_FOREACH(s, instance_name_list) { |
4a84db4c ZJS |
3498 | r = install_info_discover_and_check(plus, lp, *s, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3499 | &info, changes, n_changes); | |
4c9565ee RB |
3500 | if (r < 0) |
3501 | return r; | |
3502 | } | |
de010b0b | 3503 | else { |
4a84db4c ZJS |
3504 | r = install_info_discover_and_check(plus, lp, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3505 | &info, changes, n_changes); | |
4c9565ee RB |
3506 | if (r < 0) |
3507 | return r; | |
3508 | } | |
0ec0deaa | 3509 | |
0ec0deaa | 3510 | } else |
4a84db4c ZJS |
3511 | r = install_info_discover(minus, lp, name, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3512 | &info, changes, n_changes); | |
0ec0deaa LP |
3513 | |
3514 | return r; | |
3515 | } | |
3516 | ||
83096483 | 3517 | int unit_file_preset( |
4870133b | 3518 | RuntimeScope scope, |
9b69770a | 3519 | UnitFileFlags file_flags, |
83096483 | 3520 | const char *root_dir, |
0f87041f | 3521 | char **names, |
d309c1c3 | 3522 | UnitFilePresetMode mode, |
cd44ec5a | 3523 | InstallChange **changes, |
da6053d0 | 3524 | size_t *n_changes) { |
83096483 | 3525 | |
59ccf93d | 3526 | _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; |
c3e7fba0 | 3527 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
05cdf6a7 | 3528 | _cleanup_(unit_file_presets_done) UnitFilePresets presets = {}; |
1830ac51 | 3529 | const char *config_path; |
0ec0deaa | 3530 | int r; |
83096483 LP |
3531 | |
3532 | assert(scope >= 0); | |
4870133b | 3533 | assert(scope < _RUNTIME_SCOPE_MAX); |
b364c4de | 3534 | assert(mode < _UNIT_FILE_PRESET_MODE_MAX); |
83096483 | 3535 | |
c3e7fba0 | 3536 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
83096483 LP |
3537 | if (r < 0) |
3538 | return r; | |
3539 | ||
c3e7fba0 | 3540 | config_path = (file_flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
1830ac51 MB |
3541 | if (!config_path) |
3542 | return -ENXIO; | |
3543 | ||
8965d9f8 AC |
3544 | r = read_presets(scope, root_dir, &presets); |
3545 | if (r < 0) | |
3546 | return r; | |
83096483 | 3547 | |
0f87041f ZJS |
3548 | STRV_FOREACH(name, names) { |
3549 | r = preset_prepare_one(scope, &plus, &minus, &lp, *name, &presets, changes, n_changes); | |
83096483 | 3550 | if (r < 0) |
d9e5e694 | 3551 | return r; |
83096483 LP |
3552 | } |
3553 | ||
0f87041f | 3554 | return execute_preset(file_flags, &plus, &minus, &lp, config_path, names, mode, changes, n_changes); |
d309c1c3 LP |
3555 | } |
3556 | ||
3557 | int unit_file_preset_all( | |
4870133b | 3558 | RuntimeScope scope, |
9b69770a | 3559 | UnitFileFlags file_flags, |
d309c1c3 LP |
3560 | const char *root_dir, |
3561 | UnitFilePresetMode mode, | |
cd44ec5a | 3562 | InstallChange **changes, |
da6053d0 | 3563 | size_t *n_changes) { |
d309c1c3 | 3564 | |
59ccf93d | 3565 | _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; |
c3e7fba0 | 3566 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
05cdf6a7 | 3567 | _cleanup_(unit_file_presets_done) UnitFilePresets presets = {}; |
1830ac51 | 3568 | const char *config_path = NULL; |
0ec0deaa | 3569 | int r; |
d309c1c3 LP |
3570 | |
3571 | assert(scope >= 0); | |
4870133b | 3572 | assert(scope < _RUNTIME_SCOPE_MAX); |
b364c4de | 3573 | assert(mode < _UNIT_FILE_PRESET_MODE_MAX); |
d309c1c3 | 3574 | |
c3e7fba0 | 3575 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
d309c1c3 LP |
3576 | if (r < 0) |
3577 | return r; | |
3578 | ||
c3e7fba0 | 3579 | config_path = (file_flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
1830ac51 MB |
3580 | if (!config_path) |
3581 | return -ENXIO; | |
3582 | ||
8965d9f8 AC |
3583 | r = read_presets(scope, root_dir, &presets); |
3584 | if (r < 0) | |
3585 | return r; | |
3586 | ||
c3e7fba0 | 3587 | STRV_FOREACH(i, lp.search_path) { |
d309c1c3 | 3588 | _cleanup_closedir_ DIR *d = NULL; |
d309c1c3 | 3589 | |
401017e0 | 3590 | d = opendir(*i); |
d309c1c3 LP |
3591 | if (!d) { |
3592 | if (errno == ENOENT) | |
3593 | continue; | |
3594 | ||
3595 | return -errno; | |
3596 | } | |
3597 | ||
d25e100b | 3598 | FOREACH_DIRENT(de, d, return -errno) { |
1830ac51 | 3599 | |
7410616c | 3600 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
d309c1c3 LP |
3601 | continue; |
3602 | ||
0ec0deaa | 3603 | if (!IN_SET(de->d_type, DT_LNK, DT_REG)) |
d309c1c3 LP |
3604 | continue; |
3605 | ||
c3e7fba0 | 3606 | r = preset_prepare_one(scope, &plus, &minus, &lp, de->d_name, &presets, changes, n_changes); |
4a203a51 | 3607 | if (r < 0 && |
cbfdbffb | 3608 | !IN_SET(r, -EEXIST, -ERFKILL, -EADDRNOTAVAIL, -EBADSLT, -EIDRM, -EUCLEAN, -ELOOP, -ENOENT, -EUNATCH, -EXDEV)) |
4a203a51 | 3609 | /* Ignore generated/transient/missing/invalid units when applying preset, propagate other errors. |
cd44ec5a | 3610 | * Coordinate with install_changes_dump() above. */ |
d309c1c3 LP |
3611 | return r; |
3612 | } | |
3613 | } | |
3614 | ||
4a84db4c | 3615 | return execute_preset(file_flags, &plus, &minus, &lp, config_path, NULL, mode, changes, n_changes); |
83096483 LP |
3616 | } |
3617 | ||
27681563 | 3618 | static UnitFileList* unit_file_list_free(UnitFileList *f) { |
59ccf93d | 3619 | if (!f) |
75db809a | 3620 | return NULL; |
d9e5e694 | 3621 | |
59ccf93d | 3622 | free(f->path); |
75db809a | 3623 | return mfree(f); |
d9e5e694 | 3624 | } |
59ccf93d | 3625 | |
27681563 | 3626 | DEFINE_TRIVIAL_CLEANUP_FUNC(UnitFileList*, unit_file_list_free); |
d9e5e694 | 3627 | |
c92899fd DT |
3628 | DEFINE_HASH_OPS_WITH_VALUE_DESTRUCTOR( |
3629 | unit_file_list_hash_ops_free, | |
3630 | char, | |
3631 | string_hash_func, | |
3632 | string_compare_func, | |
3633 | UnitFileList, | |
27681563 | 3634 | unit_file_list_free); |
c92899fd | 3635 | |
83096483 | 3636 | int unit_file_get_list( |
4870133b | 3637 | RuntimeScope scope, |
83096483 | 3638 | const char *root_dir, |
313fe66f | 3639 | Hashmap *h, |
3640 | char **states, | |
3641 | char **patterns) { | |
83096483 | 3642 | |
c3e7fba0 | 3643 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
83096483 LP |
3644 | int r; |
3645 | ||
3646 | assert(scope >= 0); | |
4870133b | 3647 | assert(scope < _RUNTIME_SCOPE_MAX); |
83096483 LP |
3648 | assert(h); |
3649 | ||
c3e7fba0 | 3650 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
83096483 LP |
3651 | if (r < 0) |
3652 | return r; | |
3653 | ||
c3e7fba0 | 3654 | STRV_FOREACH(dirname, lp.search_path) { |
da39f6a6 | 3655 | _cleanup_closedir_ DIR *d = NULL; |
83096483 | 3656 | |
9c894b85 | 3657 | d = opendir(*dirname); |
83096483 LP |
3658 | if (!d) { |
3659 | if (errno == ENOENT) | |
3660 | continue; | |
a1feacf7 | 3661 | if (IN_SET(errno, ENOTDIR, EACCES)) { |
9c894b85 | 3662 | log_debug_errno(errno, "Failed to open \"%s\": %m", *dirname); |
a1feacf7 ZJS |
3663 | continue; |
3664 | } | |
83096483 | 3665 | |
d9e5e694 | 3666 | return -errno; |
83096483 LP |
3667 | } |
3668 | ||
d25e100b | 3669 | FOREACH_DIRENT(de, d, return -errno) { |
27681563 | 3670 | _cleanup_(unit_file_list_freep) UnitFileList *f = NULL; |
83096483 | 3671 | |
7410616c | 3672 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
83096483 LP |
3673 | continue; |
3674 | ||
313fe66f | 3675 | if (!strv_fnmatch_or_empty(patterns, de->d_name, FNM_NOESCAPE)) |
3676 | continue; | |
3677 | ||
83096483 LP |
3678 | if (hashmap_get(h, de->d_name)) |
3679 | continue; | |
3680 | ||
da39f6a6 | 3681 | if (!IN_SET(de->d_type, DT_LNK, DT_REG)) |
83096483 LP |
3682 | continue; |
3683 | ||
3684 | f = new0(UnitFileList, 1); | |
d9e5e694 ZJS |
3685 | if (!f) |
3686 | return -ENOMEM; | |
83096483 | 3687 | |
9c894b85 | 3688 | f->path = path_make_absolute(de->d_name, *dirname); |
d9e5e694 ZJS |
3689 | if (!f->path) |
3690 | return -ENOMEM; | |
83096483 | 3691 | |
c3e7fba0 | 3692 | r = unit_file_lookup_state(scope, &lp, de->d_name, &f->state); |
d9e5e694 | 3693 | if (r < 0) |
0ec0deaa | 3694 | f->state = UNIT_FILE_BAD; |
81fc054d | 3695 | |
313fe66f | 3696 | if (!strv_isempty(states) && |
3697 | !strv_contains(states, unit_file_state_to_string(f->state))) | |
3698 | continue; | |
3699 | ||
2b6bf07d | 3700 | r = hashmap_put(h, basename(f->path), f); |
d9e5e694 ZJS |
3701 | if (r < 0) |
3702 | return r; | |
0ec0deaa | 3703 | |
d9e5e694 | 3704 | f = NULL; /* prevent cleanup */ |
83096483 LP |
3705 | } |
3706 | } | |
3707 | ||
77cd2c87 | 3708 | return 0; |
83096483 LP |
3709 | } |
3710 | ||
3711 | static const char* const unit_file_state_table[_UNIT_FILE_STATE_MAX] = { | |
babccf14 | 3712 | [UNIT_FILE_ENABLED] = "enabled", |
771faa9a | 3713 | [UNIT_FILE_ENABLED_RUNTIME] = "enabled-runtime", |
babccf14 ZJS |
3714 | [UNIT_FILE_LINKED] = "linked", |
3715 | [UNIT_FILE_LINKED_RUNTIME] = "linked-runtime", | |
15d7ab87 | 3716 | [UNIT_FILE_ALIAS] = "alias", |
babccf14 ZJS |
3717 | [UNIT_FILE_MASKED] = "masked", |
3718 | [UNIT_FILE_MASKED_RUNTIME] = "masked-runtime", | |
3719 | [UNIT_FILE_STATIC] = "static", | |
3720 | [UNIT_FILE_DISABLED] = "disabled", | |
3721 | [UNIT_FILE_INDIRECT] = "indirect", | |
3722 | [UNIT_FILE_GENERATED] = "generated", | |
3723 | [UNIT_FILE_TRANSIENT] = "transient", | |
3724 | [UNIT_FILE_BAD] = "bad", | |
83096483 LP |
3725 | }; |
3726 | ||
3727 | DEFINE_STRING_TABLE_LOOKUP(unit_file_state, UnitFileState); | |
c0576cd6 | 3728 | |
f8662fee | 3729 | static const char* const install_change_type_table[_INSTALL_CHANGE_TYPE_MAX] = { |
1308f72e ZJS |
3730 | [INSTALL_CHANGE_SYMLINK] = "symlink", |
3731 | [INSTALL_CHANGE_UNLINK] = "unlink", | |
3732 | [INSTALL_CHANGE_IS_MASKED] = "masked", | |
bf3b0d5f | 3733 | [INSTALL_CHANGE_IS_MASKED_GENERATOR] = "masked by generator", |
1308f72e ZJS |
3734 | [INSTALL_CHANGE_IS_DANGLING] = "dangling", |
3735 | [INSTALL_CHANGE_DESTINATION_NOT_PRESENT] = "destination not present", | |
3736 | [INSTALL_CHANGE_AUXILIARY_FAILED] = "auxiliary unit failed", | |
c0576cd6 LP |
3737 | }; |
3738 | ||
f8662fee | 3739 | DEFINE_STRING_TABLE_LOOKUP(install_change_type, InstallChangeType); |
d309c1c3 | 3740 | |
b364c4de | 3741 | static const char* const unit_file_preset_mode_table[_UNIT_FILE_PRESET_MODE_MAX] = { |
babccf14 ZJS |
3742 | [UNIT_FILE_PRESET_FULL] = "full", |
3743 | [UNIT_FILE_PRESET_ENABLE_ONLY] = "enable-only", | |
d309c1c3 LP |
3744 | [UNIT_FILE_PRESET_DISABLE_ONLY] = "disable-only", |
3745 | }; | |
3746 | ||
3747 | DEFINE_STRING_TABLE_LOOKUP(unit_file_preset_mode, UnitFilePresetMode); |