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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 | ||
8f7b2566 | 55 | struct UnitFilePresetRule { |
8965d9f8 AC |
56 | char *pattern; |
57 | PresetAction action; | |
4c9565ee | 58 | char **instances; |
8f7b2566 | 59 | }; |
8965d9f8 | 60 | |
e77e07f6 DDM |
61 | /* NB! strings use past tense. */ |
62 | static const char *const preset_action_past_tense_table[_PRESET_ACTION_MAX] = { | |
63 | [PRESET_UNKNOWN] = "unknown", | |
64 | [PRESET_ENABLE] = "enabled", | |
65 | [PRESET_DISABLE] = "disabled", | |
66 | [PRESET_IGNORE] = "ignored", | |
67 | }; | |
68 | ||
69 | DEFINE_STRING_TABLE_LOOKUP_TO_STRING(preset_action_past_tense, PresetAction); | |
70 | ||
0047d54d | 71 | static bool install_info_has_rules(const InstallInfo *i) { |
7a7ec2bf ZJS |
72 | assert(i); |
73 | ||
74 | return !strv_isempty(i->aliases) || | |
75 | !strv_isempty(i->wanted_by) || | |
38f90179 MY |
76 | !strv_isempty(i->required_by) || |
77 | !strv_isempty(i->upheld_by); | |
7a7ec2bf ZJS |
78 | } |
79 | ||
0047d54d | 80 | static bool install_info_has_also(const InstallInfo *i) { |
7a7ec2bf ZJS |
81 | assert(i); |
82 | ||
83 | return !strv_isempty(i->also); | |
84 | } | |
85 | ||
52c788e6 DT |
86 | static void unit_file_preset_rule_done(UnitFilePresetRule *rule) { |
87 | assert(rule); | |
88 | ||
89 | free(rule->pattern); | |
90 | strv_free(rule->instances); | |
91 | } | |
92 | ||
05cdf6a7 | 93 | void unit_file_presets_done(UnitFilePresets *p) { |
8965d9f8 AC |
94 | if (!p) |
95 | return; | |
96 | ||
f52477d6 DT |
97 | FOREACH_ARRAY(rule, p->rules, p->n_rules) |
98 | unit_file_preset_rule_done(rule); | |
8965d9f8 AC |
99 | |
100 | free(p->rules); | |
101 | p->n_rules = 0; | |
102 | } | |
103 | ||
318031fd ZJS |
104 | static const char *const install_mode_table[_INSTALL_MODE_MAX] = { |
105 | [INSTALL_MODE_REGULAR] = "regular", | |
106 | [INSTALL_MODE_LINKED] = "linked", | |
107 | [INSTALL_MODE_ALIAS] = "alias", | |
108 | [INSTALL_MODE_MASKED] = "masked", | |
64f9280e ZJS |
109 | }; |
110 | ||
318031fd | 111 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(install_mode, InstallMode); |
64f9280e | 112 | |
c3e7fba0 | 113 | static int in_search_path(const LookupPaths *lp, const char *path) { |
8f294b45 | 114 | _cleanup_free_ char *parent = NULL; |
45519d13 | 115 | int r; |
8f294b45 | 116 | |
a6f318a5 | 117 | /* Check if 'path' is in lp->search_path. */ |
8f294b45 | 118 | |
a6f318a5 | 119 | r = path_extract_directory(ASSERT_PTR(path), &parent); |
45519d13 LP |
120 | if (r < 0) |
121 | return r; | |
8f294b45 | 122 | |
a6f318a5 ZJS |
123 | return path_strv_contains(ASSERT_PTR(lp)->search_path, parent); |
124 | } | |
125 | ||
126 | static int underneath_search_path(const LookupPaths *lp, const char *path) { | |
127 | /* Check if 'path' is underneath lp->search_path. */ | |
128 | ||
129 | return !!path_startswith_strv(ASSERT_PTR(path), ASSERT_PTR(lp)->search_path); | |
8f294b45 LP |
130 | } |
131 | ||
c3e7fba0 | 132 | static const char* skip_root(const char *root_dir, const char *path) { |
8f9364f9 | 133 | assert(path); |
401017e0 | 134 | |
c3e7fba0 | 135 | if (!root_dir) |
8f9364f9 | 136 | return path; |
401017e0 | 137 | |
c3e7fba0 | 138 | const char *e = path_startswith(path, root_dir); |
8f9364f9 LP |
139 | if (!e) |
140 | return NULL; | |
141 | ||
142 | /* Make sure the returned path starts with a slash */ | |
143 | if (e[0] != '/') { | |
144 | if (e == path || e[-1] != '/') | |
145 | return NULL; | |
401017e0 | 146 | |
8f9364f9 | 147 | e--; |
401017e0 LP |
148 | } |
149 | ||
8f9364f9 | 150 | return e; |
401017e0 LP |
151 | } |
152 | ||
c3e7fba0 | 153 | static int path_is_generator(const LookupPaths *lp, const char *path) { |
f4139308 | 154 | _cleanup_free_ char *parent = NULL; |
45519d13 | 155 | int r; |
f4139308 | 156 | |
c3e7fba0 | 157 | assert(lp); |
f4139308 LP |
158 | assert(path); |
159 | ||
45519d13 LP |
160 | r = path_extract_directory(path, &parent); |
161 | if (r < 0) | |
162 | return r; | |
f4139308 | 163 | |
c3e7fba0 ZJS |
164 | return path_equal_ptr(parent, lp->generator) || |
165 | path_equal_ptr(parent, lp->generator_early) || | |
166 | path_equal_ptr(parent, lp->generator_late); | |
f4139308 LP |
167 | } |
168 | ||
c3e7fba0 | 169 | static int path_is_transient(const LookupPaths *lp, const char *path) { |
e4fca67f | 170 | _cleanup_free_ char *parent = NULL; |
45519d13 | 171 | int r; |
e4fca67f | 172 | |
c3e7fba0 | 173 | assert(lp); |
e4fca67f LP |
174 | assert(path); |
175 | ||
45519d13 LP |
176 | r = path_extract_directory(path, &parent); |
177 | if (r < 0) | |
178 | return r; | |
e4fca67f | 179 | |
c3e7fba0 | 180 | return path_equal_ptr(parent, lp->transient); |
e4fca67f LP |
181 | } |
182 | ||
c3e7fba0 | 183 | static int path_is_control(const LookupPaths *lp, const char *path) { |
e1c5c2b0 | 184 | _cleanup_free_ char *parent = NULL; |
45519d13 | 185 | int r; |
0ec0deaa | 186 | |
c3e7fba0 | 187 | assert(lp); |
0ec0deaa LP |
188 | assert(path); |
189 | ||
45519d13 LP |
190 | r = path_extract_directory(path, &parent); |
191 | if (r < 0) | |
192 | return r; | |
0ec0deaa | 193 | |
c3e7fba0 ZJS |
194 | return path_equal_ptr(parent, lp->persistent_control) || |
195 | path_equal_ptr(parent, lp->runtime_control); | |
344ca755 LP |
196 | } |
197 | ||
c3e7fba0 | 198 | static int path_is_config(const LookupPaths *lp, const char *path, bool check_parent) { |
344ca755 | 199 | _cleanup_free_ char *parent = NULL; |
45519d13 | 200 | int r; |
344ca755 | 201 | |
c3e7fba0 | 202 | assert(lp); |
344ca755 LP |
203 | assert(path); |
204 | ||
d7604756 ZJS |
205 | /* Note that we do *not* have generic checks for /etc or /run in place, since with |
206 | * them we couldn't discern configuration from transient or generated units */ | |
0ec0deaa | 207 | |
dfead90d | 208 | if (check_parent) { |
45519d13 LP |
209 | r = path_extract_directory(path, &parent); |
210 | if (r < 0) | |
211 | return r; | |
dfead90d LP |
212 | |
213 | path = parent; | |
214 | } | |
0ec0deaa | 215 | |
c3e7fba0 ZJS |
216 | return path_equal_ptr(path, lp->persistent_config) || |
217 | path_equal_ptr(path, lp->runtime_config); | |
0ec0deaa LP |
218 | } |
219 | ||
c3e7fba0 | 220 | static int path_is_runtime(const LookupPaths *lp, const char *path, bool check_parent) { |
385eb996 | 221 | _cleanup_free_ char *parent = NULL; |
401017e0 | 222 | const char *rpath; |
45519d13 | 223 | int r; |
385eb996 | 224 | |
c3e7fba0 | 225 | assert(lp); |
385eb996 LP |
226 | assert(path); |
227 | ||
d7604756 ZJS |
228 | /* Everything in /run is considered runtime. On top of that we also add |
229 | * explicit checks for the various runtime directories, as safety net. */ | |
344ca755 | 230 | |
c3e7fba0 | 231 | rpath = skip_root(lp->root_dir, path); |
401017e0 | 232 | if (rpath && path_startswith(rpath, "/run")) |
385eb996 LP |
233 | return true; |
234 | ||
dfead90d | 235 | if (check_parent) { |
45519d13 LP |
236 | r = path_extract_directory(path, &parent); |
237 | if (r < 0) | |
238 | return r; | |
385eb996 | 239 | |
dfead90d LP |
240 | path = parent; |
241 | } | |
242 | ||
c3e7fba0 ZJS |
243 | return path_equal_ptr(path, lp->runtime_config) || |
244 | path_equal_ptr(path, lp->generator) || | |
245 | path_equal_ptr(path, lp->generator_early) || | |
246 | path_equal_ptr(path, lp->generator_late) || | |
247 | path_equal_ptr(path, lp->transient) || | |
248 | path_equal_ptr(path, lp->runtime_control); | |
344ca755 LP |
249 | } |
250 | ||
c3e7fba0 | 251 | static int path_is_vendor_or_generator(const LookupPaths *lp, const char *path) { |
344ca755 LP |
252 | const char *rpath; |
253 | ||
c3e7fba0 | 254 | assert(lp); |
344ca755 LP |
255 | assert(path); |
256 | ||
c3e7fba0 | 257 | rpath = skip_root(lp->root_dir, path); |
344ca755 LP |
258 | if (!rpath) |
259 | return 0; | |
260 | ||
261 | if (path_startswith(rpath, "/usr")) | |
262 | return true; | |
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; |
660087dc | 288 | int r; |
0ec0deaa | 289 | |
0ec0deaa | 290 | assert(!changes == !n_changes); |
f8662fee | 291 | assert(INSTALL_CHANGE_TYPE_VALID(type)); |
93419a96 | 292 | |
4a4af850 ZJS |
293 | /* Message formatting requires <path> to be set. */ |
294 | assert(path); | |
295 | ||
94e7298d ZJS |
296 | /* Register a change or error. Note that the return value may be the error |
297 | * that was passed in, or -ENOMEM generated internally. */ | |
298 | ||
0ec0deaa | 299 | if (!changes) |
94e7298d | 300 | return type; |
0ec0deaa | 301 | |
cd44ec5a | 302 | c = reallocarray(*changes, *n_changes + 1, sizeof(InstallChange)); |
0ec0deaa LP |
303 | if (!c) |
304 | return -ENOMEM; | |
0ec0deaa | 305 | *changes = c; |
0ec0deaa | 306 | |
660087dc ZJS |
307 | r = path_simplify_alloc(path, &p); |
308 | if (r < 0) | |
309 | return r; | |
93419a96 | 310 | |
660087dc ZJS |
311 | r = path_simplify_alloc(source, &s); |
312 | if (r < 0) | |
313 | return r; | |
93419a96 | 314 | |
cd44ec5a | 315 | c[(*n_changes)++] = (InstallChange) { |
f8662fee | 316 | .type = type, |
93419a96 LP |
317 | .path = TAKE_PTR(p), |
318 | .source = TAKE_PTR(s), | |
319 | }; | |
0ec0deaa | 320 | |
94e7298d | 321 | return type; |
0ec0deaa LP |
322 | } |
323 | ||
cd44ec5a | 324 | void install_changes_free(InstallChange *changes, size_t n_changes) { |
0ec0deaa LP |
325 | assert(changes || n_changes == 0); |
326 | ||
de8be28e | 327 | for (size_t i = 0; i < n_changes; i++) { |
0ec0deaa LP |
328 | free(changes[i].path); |
329 | free(changes[i].source); | |
330 | } | |
331 | ||
332 | free(changes); | |
333 | } | |
334 | ||
cd44ec5a | 335 | void install_changes_dump(int r, const char *verb, const InstallChange *changes, size_t n_changes, bool quiet) { |
32450f53 | 336 | int err = 0; |
af3d8113 ZJS |
337 | |
338 | assert(changes || n_changes == 0); | |
339 | /* If verb is not specified, errors are not allowed! */ | |
340 | assert(verb || r >= 0); | |
341 | ||
de8be28e | 342 | for (size_t i = 0; i < n_changes; i++) { |
8f5d716a ZJS |
343 | if (changes[i].type < 0) |
344 | assert(verb); | |
4a4af850 | 345 | assert(changes[i].path); |
af3d8113 | 346 | |
5ad58fea ZJS |
347 | /* When making changes here, make sure to also change install_error() in dbus-manager.c. */ |
348 | ||
f8662fee | 349 | switch (changes[i].type) { |
1308f72e | 350 | case INSTALL_CHANGE_SYMLINK: |
af3d8113 | 351 | if (!quiet) |
a760db24 ZJS |
352 | log_info("Created symlink %s %s %s.", |
353 | changes[i].path, | |
fc03e80c | 354 | special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), |
a760db24 | 355 | changes[i].source); |
af3d8113 | 356 | break; |
1308f72e | 357 | case INSTALL_CHANGE_UNLINK: |
af3d8113 | 358 | if (!quiet) |
e75a26d0 | 359 | log_info("Removed \"%s\".", changes[i].path); |
af3d8113 | 360 | break; |
1308f72e | 361 | case INSTALL_CHANGE_IS_MASKED: |
af3d8113 ZJS |
362 | if (!quiet) |
363 | log_info("Unit %s is masked, ignoring.", changes[i].path); | |
364 | break; | |
bf3b0d5f ZJS |
365 | case INSTALL_CHANGE_IS_MASKED_GENERATOR: |
366 | if (!quiet) | |
367 | log_info("Unit %s is masked via a generator and cannot be unmasked.", | |
368 | changes[i].path); | |
369 | break; | |
1308f72e | 370 | case INSTALL_CHANGE_IS_DANGLING: |
893275df ZJS |
371 | if (!quiet) |
372 | log_info("Unit %s is an alias to a unit that is not present, ignoring.", | |
373 | changes[i].path); | |
374 | break; | |
1308f72e | 375 | case INSTALL_CHANGE_DESTINATION_NOT_PRESENT: |
8ae27441 JS |
376 | if (!quiet) |
377 | log_warning("Unit %s is added as a dependency to a non-existent unit %s.", | |
378 | changes[i].source, changes[i].path); | |
379 | break; | |
1308f72e | 380 | case INSTALL_CHANGE_AUXILIARY_FAILED: |
3aa96361 | 381 | if (!quiet) |
4a4af850 | 382 | log_warning("Failed to enable auxiliary unit %s, ignoring.", changes[i].path); |
3aa96361 | 383 | break; |
af3d8113 ZJS |
384 | case -EEXIST: |
385 | if (changes[i].source) | |
f8662fee | 386 | err = log_error_errno(changes[i].type, |
32450f53 ZJS |
387 | "Failed to %s unit, file \"%s\" already exists and is a symlink to \"%s\".", |
388 | verb, changes[i].path, changes[i].source); | |
af3d8113 | 389 | else |
f8662fee | 390 | err = log_error_errno(changes[i].type, |
32450f53 ZJS |
391 | "Failed to %s unit, file \"%s\" already exists.", |
392 | verb, changes[i].path); | |
af3d8113 ZJS |
393 | break; |
394 | case -ERFKILL: | |
f8662fee | 395 | err = log_error_errno(changes[i].type, "Failed to %s unit, unit %s is masked.", |
32450f53 | 396 | verb, changes[i].path); |
af3d8113 ZJS |
397 | break; |
398 | case -EADDRNOTAVAIL: | |
f8662fee | 399 | err = log_error_errno(changes[i].type, "Failed to %s unit, unit %s is transient or generated.", |
32450f53 | 400 | verb, changes[i].path); |
af3d8113 | 401 | break; |
a6f318a5 ZJS |
402 | case -ETXTBSY: |
403 | err = log_error_errno(changes[i].type, "Failed to %s unit, file %s is under the systemd unit hierarchy already.", | |
404 | verb, changes[i].path); | |
405 | break; | |
19b9d5d0 | 406 | case -EBADSLT: |
f8662fee | 407 | err = log_error_errno(changes[i].type, "Failed to %s unit, invalid specifier in \"%s\".", |
32450f53 | 408 | verb, changes[i].path); |
19b9d5d0 | 409 | break; |
b0ec372a | 410 | case -EIDRM: |
f8662fee | 411 | err = log_error_errno(changes[i].type, "Failed to %s %s, destination unit %s is a non-template unit.", |
32450f53 | 412 | verb, changes[i].source, changes[i].path); |
b0ec372a | 413 | break; |
d7ceaf72 | 414 | case -EUCLEAN: |
f8662fee | 415 | err = log_error_errno(changes[i].type, |
32450f53 ZJS |
416 | "Failed to %s unit, \"%s\" is not a valid unit name.", |
417 | verb, changes[i].path); | |
d7ceaf72 | 418 | break; |
af3d8113 | 419 | case -ELOOP: |
f8662fee | 420 | err = log_error_errno(changes[i].type, "Failed to %s unit, refusing to operate on linked unit file %s.", |
32450f53 | 421 | verb, changes[i].path); |
af3d8113 | 422 | break; |
cbfdbffb ZJS |
423 | case -EXDEV: |
424 | if (changes[i].source) | |
f8662fee | 425 | err = log_error_errno(changes[i].type, "Failed to %s unit, cannot alias %s as %s.", |
cbfdbffb ZJS |
426 | verb, changes[i].source, changes[i].path); |
427 | else | |
f8662fee | 428 | err = log_error_errno(changes[i].type, "Failed to %s unit, invalid unit reference \"%s\".", |
cbfdbffb ZJS |
429 | verb, changes[i].path); |
430 | break; | |
637d6e5b | 431 | case -ENOENT: |
f8662fee | 432 | err = log_error_errno(changes[i].type, "Failed to %s unit, unit %s does not exist.", |
32450f53 | 433 | verb, changes[i].path); |
637d6e5b | 434 | break; |
6ec4c852 | 435 | case -EUNATCH: |
f8662fee | 436 | err = log_error_errno(changes[i].type, "Failed to %s unit, cannot resolve specifiers in \"%s\".", |
32450f53 | 437 | verb, changes[i].path); |
6ec4c852 | 438 | break; |
af3d8113 | 439 | default: |
f8662fee LP |
440 | assert(changes[i].type < 0); |
441 | err = log_error_errno(changes[i].type, "Failed to %s unit, file \"%s\": %m", | |
32450f53 | 442 | verb, changes[i].path); |
af3d8113 ZJS |
443 | } |
444 | } | |
445 | ||
32450f53 | 446 | if (r < 0 && err >= 0) |
af3d8113 ZJS |
447 | log_error_errno(r, "Failed to %s: %m.", verb); |
448 | } | |
449 | ||
25ea9277 | 450 | /** |
3fc53351 ZJS |
451 | * Checks if two symlink targets (starting from src) are equivalent as far as the unit enablement logic is |
452 | * concerned. If the target is in the unit search path, then anything with the same name is equivalent. | |
453 | * If outside the unit search path, paths must be identical. | |
25ea9277 | 454 | */ |
3fc53351 ZJS |
455 | static int chroot_unit_symlinks_equivalent( |
456 | const LookupPaths *lp, | |
457 | const char *src, | |
458 | const char *target_a, | |
459 | const char *target_b) { | |
460 | ||
461 | assert(lp); | |
462 | assert(src); | |
463 | assert(target_a); | |
464 | assert(target_b); | |
25ea9277 ZJS |
465 | |
466 | /* This will give incorrect results if the paths are relative and go outside | |
467 | * of the chroot. False negatives are possible. */ | |
468 | ||
3fc53351 ZJS |
469 | const char *root = lp->root_dir ?: "/"; |
470 | _cleanup_free_ char *dirname = NULL; | |
471 | int r; | |
472 | ||
473 | if (!path_is_absolute(target_a) || !path_is_absolute(target_b)) { | |
474 | r = path_extract_directory(src, &dirname); | |
475 | if (r < 0) | |
476 | return r; | |
477 | } | |
478 | ||
479 | _cleanup_free_ char *a = path_join(path_is_absolute(target_a) ? root : dirname, target_a); | |
480 | _cleanup_free_ char *b = path_join(path_is_absolute(target_b) ? root : dirname, target_b); | |
481 | if (!a || !b) | |
482 | return log_oom(); | |
ae9efab7 | 483 | |
563e6846 | 484 | r = path_equal_or_inode_same(a, b, 0); |
3fc53351 ZJS |
485 | if (r != 0) |
486 | return r; | |
487 | ||
488 | _cleanup_free_ char *a_name = NULL, *b_name = NULL; | |
489 | r = path_extract_filename(a, &a_name); | |
490 | if (r < 0) | |
491 | return r; | |
492 | r = path_extract_filename(b, &b_name); | |
493 | if (r < 0) | |
494 | return r; | |
495 | ||
496 | return streq(a_name, b_name) && | |
497 | path_startswith_strv(a, lp->search_path) && | |
498 | path_startswith_strv(b, lp->search_path); | |
25ea9277 ZJS |
499 | } |
500 | ||
0ec0deaa | 501 | static int create_symlink( |
c3e7fba0 | 502 | const LookupPaths *lp, |
0ec0deaa LP |
503 | const char *old_path, |
504 | const char *new_path, | |
505 | bool force, | |
cd44ec5a | 506 | InstallChange **changes, |
da6053d0 | 507 | size_t *n_changes) { |
0ec0deaa | 508 | |
3fc53351 | 509 | _cleanup_free_ char *dest = NULL; |
60bec8e4 | 510 | const char *rp; |
0ec0deaa LP |
511 | int r; |
512 | ||
513 | assert(old_path); | |
514 | assert(new_path); | |
515 | ||
c3e7fba0 | 516 | rp = skip_root(lp->root_dir, old_path); |
60bec8e4 ZJS |
517 | if (rp) |
518 | old_path = rp; | |
519 | ||
4f5c2485 ZJS |
520 | /* Actually create a symlink, and remember that we did. This function is |
521 | * smart enough to check if there's already a valid symlink in place. | |
85158303 | 522 | * |
4f5c2485 ZJS |
523 | * Returns 1 if a symlink was created or already exists and points to the |
524 | * right place, or negative on error. | |
85158303 | 525 | */ |
0ec0deaa | 526 | |
35cd0ba5 | 527 | (void) mkdir_parents_label(new_path, 0755); |
0ec0deaa LP |
528 | |
529 | if (symlink(old_path, new_path) >= 0) { | |
f31f10a6 ZJS |
530 | r = install_changes_add(changes, n_changes, INSTALL_CHANGE_SYMLINK, new_path, old_path); |
531 | if (r < 0) | |
532 | return r; | |
3de15214 | 533 | return 1; |
0ec0deaa LP |
534 | } |
535 | ||
94e7298d ZJS |
536 | if (errno != EEXIST) |
537 | return install_changes_add(changes, n_changes, -errno, new_path, NULL); | |
0ec0deaa LP |
538 | |
539 | r = readlink_malloc(new_path, &dest); | |
7d782f26 ZJS |
540 | if (r < 0) { |
541 | /* translate EINVAL (non-symlink exists) to EEXIST */ | |
542 | if (r == -EINVAL) | |
543 | r = -EEXIST; | |
544 | ||
94e7298d | 545 | return install_changes_add(changes, n_changes, r, new_path, NULL); |
7d782f26 | 546 | } |
0ec0deaa | 547 | |
3fc53351 | 548 | if (chroot_unit_symlinks_equivalent(lp, new_path, dest, old_path)) { |
e2341b6b DT |
549 | log_debug("Symlink %s %s %s already exists", |
550 | new_path, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), dest); | |
85158303 | 551 | return 1; |
3e8d06d9 | 552 | } |
0ec0deaa | 553 | |
94e7298d ZJS |
554 | if (!force) |
555 | return install_changes_add(changes, n_changes, -EEXIST, new_path, dest); | |
0ec0deaa LP |
556 | |
557 | r = symlink_atomic(old_path, new_path); | |
94e7298d ZJS |
558 | if (r < 0) |
559 | return install_changes_add(changes, n_changes, r, new_path, NULL); | |
0ec0deaa | 560 | |
f31f10a6 ZJS |
561 | r = install_changes_add(changes, n_changes, INSTALL_CHANGE_UNLINK, new_path, NULL); |
562 | if (r < 0) | |
563 | return r; | |
564 | r = install_changes_add(changes, n_changes, INSTALL_CHANGE_SYMLINK, new_path, old_path); | |
565 | if (r < 0) | |
566 | return r; | |
0ec0deaa | 567 | |
3de15214 | 568 | return 1; |
0ec0deaa LP |
569 | } |
570 | ||
83096483 LP |
571 | static int mark_symlink_for_removal( |
572 | Set **remove_symlinks_to, | |
573 | const char *p) { | |
574 | ||
575 | char *n; | |
576 | int r; | |
577 | ||
578 | assert(p); | |
579 | ||
548f6937 | 580 | r = set_ensure_allocated(remove_symlinks_to, &path_hash_ops); |
83096483 LP |
581 | if (r < 0) |
582 | return r; | |
583 | ||
cf3d95b2 YW |
584 | r = path_simplify_alloc(p, &n); |
585 | if (r < 0) | |
586 | return r; | |
83096483 | 587 | |
ef42202a | 588 | r = set_consume(*remove_symlinks_to, n); |
d25e100b LP |
589 | if (r == -EEXIST) |
590 | return 0; | |
ef42202a | 591 | if (r < 0) |
d25e100b | 592 | return r; |
83096483 | 593 | |
0ec0deaa | 594 | return 1; |
83096483 LP |
595 | } |
596 | ||
597 | static int remove_marked_symlinks_fd( | |
598 | Set *remove_symlinks_to, | |
599 | int fd, | |
600 | const char *path, | |
601 | const char *config_path, | |
401017e0 | 602 | const LookupPaths *lp, |
3b3557c4 | 603 | bool dry_run, |
0ec0deaa | 604 | bool *restart, |
cd44ec5a | 605 | InstallChange **changes, |
da6053d0 | 606 | size_t *n_changes) { |
83096483 | 607 | |
7fd1b19b | 608 | _cleanup_closedir_ DIR *d = NULL; |
bcafe923 | 609 | int r = 0; |
83096483 LP |
610 | |
611 | assert(remove_symlinks_to); | |
612 | assert(fd >= 0); | |
613 | assert(path); | |
614 | assert(config_path); | |
401017e0 | 615 | assert(lp); |
0ec0deaa | 616 | assert(restart); |
83096483 LP |
617 | |
618 | d = fdopendir(fd); | |
619 | if (!d) { | |
03e334a1 | 620 | safe_close(fd); |
83096483 LP |
621 | return -errno; |
622 | } | |
623 | ||
624 | rewinddir(d); | |
625 | ||
06693181 | 626 | FOREACH_DIRENT(de, d, return -errno) |
83096483 | 627 | |
83096483 | 628 | if (de->d_type == DT_DIR) { |
7fd1b19b | 629 | _cleanup_free_ char *p = NULL; |
d25e100b | 630 | int nfd, q; |
83096483 LP |
631 | |
632 | nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
633 | if (nfd < 0) { | |
634 | if (errno == ENOENT) | |
635 | continue; | |
636 | ||
637 | if (r == 0) | |
638 | r = -errno; | |
639 | continue; | |
640 | } | |
641 | ||
642 | p = path_make_absolute(de->d_name, path); | |
643 | if (!p) { | |
03e334a1 | 644 | safe_close(nfd); |
d9e5e694 | 645 | return -ENOMEM; |
83096483 LP |
646 | } |
647 | ||
648 | /* This will close nfd, regardless whether it succeeds or not */ | |
3b3557c4 | 649 | q = remove_marked_symlinks_fd(remove_symlinks_to, nfd, p, config_path, lp, dry_run, restart, changes, n_changes); |
bcafe923 | 650 | if (q < 0 && r == 0) |
83096483 LP |
651 | r = q; |
652 | ||
653 | } else if (de->d_type == DT_LNK) { | |
7a6c73da | 654 | _cleanup_free_ char *p = NULL; |
83096483 | 655 | bool found; |
0ec0deaa | 656 | int q; |
83096483 | 657 | |
7410616c | 658 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
bcafe923 LP |
659 | continue; |
660 | ||
83096483 | 661 | p = path_make_absolute(de->d_name, path); |
d9e5e694 ZJS |
662 | if (!p) |
663 | return -ENOMEM; | |
4ff361cc | 664 | path_simplify(p); |
83096483 | 665 | |
7a6c73da | 666 | /* We remove all links pointing to a file or path that is marked, as well as all |
9f61c9f7 ZJS |
667 | * files sharing the same name as a file that is marked, and files sharing the same |
668 | * name after the instance has been removed. Do path chasing only if we don't already | |
669 | * know that we want to remove the symlink. */ | |
7a6c73da | 670 | found = set_contains(remove_symlinks_to, de->d_name); |
212a24f0 | 671 | |
7a6c73da | 672 | if (!found) { |
9f61c9f7 ZJS |
673 | _cleanup_free_ char *template = NULL; |
674 | ||
675 | q = unit_name_template(de->d_name, &template); | |
676 | if (q < 0 && q != -EINVAL) | |
677 | return q; | |
678 | if (q >= 0) | |
679 | found = set_contains(remove_symlinks_to, template); | |
680 | } | |
7a6c73da | 681 | |
9f61c9f7 ZJS |
682 | if (!found) { |
683 | _cleanup_free_ char *dest = NULL; | |
7a6c73da | 684 | |
f461a28d | 685 | q = chase(p, lp->root_dir, CHASE_NONEXISTENT, &dest, NULL); |
7a6c73da ZJS |
686 | if (q == -ENOENT) |
687 | continue; | |
688 | if (q < 0) { | |
689 | log_debug_errno(q, "Failed to resolve symlink \"%s\": %m", p); | |
cd44ec5a | 690 | install_changes_add(changes, n_changes, q, p, NULL); |
83096483 | 691 | |
7a6c73da ZJS |
692 | if (r == 0) |
693 | r = q; | |
694 | continue; | |
695 | } | |
696 | ||
697 | found = set_contains(remove_symlinks_to, dest) || | |
698 | set_contains(remove_symlinks_to, basename(dest)); | |
699 | ||
700 | } | |
0ec0deaa | 701 | |
83096483 | 702 | |
1dacfd2a LP |
703 | if (!found) |
704 | continue; | |
83096483 | 705 | |
3b3557c4 JS |
706 | if (!dry_run) { |
707 | if (unlinkat(fd, de->d_name, 0) < 0 && errno != ENOENT) { | |
708 | if (r == 0) | |
709 | r = -errno; | |
cd44ec5a | 710 | install_changes_add(changes, n_changes, -errno, p, NULL); |
3b3557c4 JS |
711 | continue; |
712 | } | |
bcafe923 | 713 | |
3b3557c4 JS |
714 | (void) rmdir_parents(p, config_path); |
715 | } | |
83096483 | 716 | |
f31f10a6 ZJS |
717 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_UNLINK, p, NULL); |
718 | if (q < 0) | |
719 | return q; | |
1dacfd2a | 720 | |
12bf0ae4 ZJS |
721 | /* Now, remember the full path (but with the root prefix removed) of |
722 | * the symlink we just removed, and remove any symlinks to it, too. */ | |
401017e0 | 723 | |
7a6c73da | 724 | const char *rp = skip_root(lp->root_dir, p); |
401017e0 | 725 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: p); |
0ec0deaa LP |
726 | if (q < 0) |
727 | return q; | |
3b3557c4 | 728 | if (q > 0 && !dry_run) |
0ec0deaa | 729 | *restart = true; |
83096483 | 730 | } |
83096483 | 731 | |
83096483 LP |
732 | return r; |
733 | } | |
734 | ||
735 | static int remove_marked_symlinks( | |
736 | Set *remove_symlinks_to, | |
737 | const char *config_path, | |
401017e0 | 738 | const LookupPaths *lp, |
3b3557c4 | 739 | bool dry_run, |
cd44ec5a | 740 | InstallChange **changes, |
da6053d0 | 741 | size_t *n_changes) { |
83096483 | 742 | |
254d1313 | 743 | _cleanup_close_ int fd = -EBADF; |
0ec0deaa | 744 | bool restart; |
d25e100b | 745 | int r = 0; |
83096483 LP |
746 | |
747 | assert(config_path); | |
401017e0 | 748 | assert(lp); |
83096483 LP |
749 | |
750 | if (set_size(remove_symlinks_to) <= 0) | |
751 | return 0; | |
752 | ||
67852d08 | 753 | fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC); |
83096483 | 754 | if (fd < 0) |
32d9493e | 755 | return errno == ENOENT ? 0 : -errno; |
83096483 LP |
756 | |
757 | do { | |
758 | int q, cfd; | |
0ec0deaa | 759 | restart = false; |
83096483 | 760 | |
ead34950 | 761 | cfd = fcntl(fd, F_DUPFD_CLOEXEC, 3); |
d25e100b LP |
762 | if (cfd < 0) |
763 | return -errno; | |
83096483 LP |
764 | |
765 | /* This takes possession of cfd and closes it */ | |
3b3557c4 | 766 | q = remove_marked_symlinks_fd(remove_symlinks_to, cfd, config_path, config_path, lp, dry_run, &restart, changes, n_changes); |
83096483 LP |
767 | if (r == 0) |
768 | r = q; | |
0ec0deaa | 769 | } while (restart); |
83096483 | 770 | |
83096483 LP |
771 | return r; |
772 | } | |
773 | ||
0047d54d | 774 | static int is_symlink_with_known_name(const InstallInfo *i, const char *name) { |
5cd8ae31 ZJS |
775 | int r; |
776 | ||
777 | if (streq(name, i->name)) | |
778 | return true; | |
779 | ||
780 | if (strv_contains(i->aliases, name)) | |
781 | return true; | |
782 | ||
783 | /* Look for template symlink matching DefaultInstance */ | |
784 | if (i->default_instance && unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE)) { | |
785 | _cleanup_free_ char *s = NULL; | |
786 | ||
787 | r = unit_name_replace_instance(i->name, i->default_instance, &s); | |
788 | if (r < 0) { | |
789 | if (r != -EINVAL) | |
790 | return r; | |
791 | ||
792 | } else if (streq(name, s)) | |
793 | return true; | |
794 | } | |
795 | ||
796 | return false; | |
797 | } | |
798 | ||
43b4e305 MS |
799 | static int find_symlinks_in_directory( |
800 | DIR *dir, | |
801 | const char *dir_path, | |
0ec0deaa | 802 | const char *root_dir, |
0047d54d | 803 | const InstallInfo *info, |
466f6979 ZJS |
804 | bool ignore_destination, |
805 | bool match_name, | |
4b37c89f | 806 | bool ignore_same_name, |
83096483 LP |
807 | const char *config_path, |
808 | bool *same_name_link) { | |
809 | ||
d25e100b | 810 | int r = 0; |
83096483 | 811 | |
43b4e305 | 812 | FOREACH_DIRENT(de, dir, return -errno) { |
466f6979 | 813 | bool found_path = false, found_dest = false, b = false; |
43b4e305 | 814 | int q; |
83096483 | 815 | |
43b4e305 MS |
816 | if (de->d_type != DT_LNK) |
817 | continue; | |
83096483 | 818 | |
466f6979 ZJS |
819 | if (!ignore_destination) { |
820 | _cleanup_free_ char *dest = NULL; | |
821 | ||
822 | /* Acquire symlink destination */ | |
823 | q = readlinkat_malloc(dirfd(dir), de->d_name, &dest); | |
824 | if (q == -ENOENT) | |
825 | continue; | |
826 | if (q < 0) { | |
827 | if (r == 0) | |
828 | r = q; | |
829 | continue; | |
830 | } | |
83096483 | 831 | |
466f6979 ZJS |
832 | /* Make absolute */ |
833 | if (!path_is_absolute(dest)) { | |
834 | char *x; | |
83096483 | 835 | |
466f6979 ZJS |
836 | x = path_join(dir_path, dest); |
837 | if (!x) | |
838 | return -ENOMEM; | |
83096483 | 839 | |
466f6979 ZJS |
840 | free_and_replace(dest, x); |
841 | } | |
842 | ||
843 | /* Check if what the symlink points to matches what we are looking for */ | |
844 | found_dest = streq(basename(dest), info->name); | |
43b4e305 | 845 | } |
83096483 | 846 | |
4a84db4c | 847 | assert(unit_name_is_valid(info->name, UNIT_NAME_ANY)); |
0ec0deaa | 848 | |
466f6979 ZJS |
849 | /* Check if the symlink itself matches what we are looking for. |
850 | * | |
851 | * If ignore_destination is specified, we only look at the source name. | |
852 | * | |
853 | * If ignore_same_name is specified, we are in one of the directories which | |
854 | * have lower priority than the unit file, and even if a file or symlink with | |
855 | * this name was found, we should ignore it. */ | |
856 | ||
857 | if (ignore_destination || !ignore_same_name) | |
858 | found_path = streq(de->d_name, info->name); | |
859 | ||
860 | if (!found_path && ignore_destination) { | |
861 | _cleanup_free_ char *template = NULL; | |
862 | ||
863 | q = unit_name_template(de->d_name, &template); | |
864 | if (q < 0 && q != -EINVAL) | |
865 | return q; | |
866 | if (q >= 0) | |
867 | found_dest = streq(template, info->name); | |
868 | } | |
0ec0deaa | 869 | |
43b4e305 MS |
870 | if (found_path && found_dest) { |
871 | _cleanup_free_ char *p = NULL, *t = NULL; | |
0ec0deaa | 872 | |
466f6979 | 873 | /* Filter out same name links in the main config path */ |
43b4e305 | 874 | p = path_make_absolute(de->d_name, dir_path); |
4a84db4c | 875 | t = path_make_absolute(info->name, config_path); |
83096483 | 876 | |
43b4e305 MS |
877 | if (!p || !t) |
878 | return -ENOMEM; | |
83096483 | 879 | |
43b4e305 MS |
880 | b = path_equal(p, t); |
881 | } | |
83096483 | 882 | |
43b4e305 MS |
883 | if (b) |
884 | *same_name_link = true; | |
885 | else if (found_path || found_dest) { | |
466f6979 | 886 | if (!match_name) |
43b4e305 | 887 | return 1; |
83096483 | 888 | |
43b4e305 | 889 | /* Check if symlink name is in the set of names used by [Install] */ |
4a84db4c | 890 | q = is_symlink_with_known_name(info, de->d_name); |
43b4e305 MS |
891 | if (q < 0) |
892 | return q; | |
893 | if (q > 0) | |
894 | return 1; | |
83096483 LP |
895 | } |
896 | } | |
d25e100b LP |
897 | |
898 | return r; | |
83096483 LP |
899 | } |
900 | ||
901 | static int find_symlinks( | |
0ec0deaa | 902 | const char *root_dir, |
0047d54d | 903 | const InstallInfo *i, |
d9b4b48f | 904 | bool match_name, |
4b37c89f | 905 | bool ignore_same_name, |
83096483 LP |
906 | const char *config_path, |
907 | bool *same_name_link) { | |
908 | ||
43b4e305 | 909 | _cleanup_closedir_ DIR *config_dir = NULL; |
43b4e305 | 910 | int r = 0; |
83096483 | 911 | |
5cd8ae31 | 912 | assert(i); |
83096483 LP |
913 | assert(config_path); |
914 | assert(same_name_link); | |
915 | ||
43b4e305 MS |
916 | config_dir = opendir(config_path); |
917 | if (!config_dir) { | |
a1feacf7 | 918 | if (IN_SET(errno, ENOENT, ENOTDIR, EACCES)) |
d5891fda | 919 | return 0; |
83096483 | 920 | return -errno; |
d5891fda | 921 | } |
83096483 | 922 | |
43b4e305 MS |
923 | FOREACH_DIRENT(de, config_dir, return -errno) { |
924 | const char *suffix; | |
925 | _cleanup_free_ const char *path = NULL; | |
926 | _cleanup_closedir_ DIR *d = NULL; | |
927 | ||
43b4e305 MS |
928 | if (de->d_type != DT_DIR) |
929 | continue; | |
930 | ||
931 | suffix = strrchr(de->d_name, '.'); | |
38f90179 | 932 | if (!STRPTR_IN_SET(suffix, ".wants", ".requires", ".upholds")) |
43b4e305 MS |
933 | continue; |
934 | ||
935 | path = path_join(config_path, de->d_name); | |
936 | if (!path) | |
937 | return -ENOMEM; | |
938 | ||
939 | d = opendir(path); | |
940 | if (!d) { | |
e75a26d0 | 941 | log_error_errno(errno, "Failed to open directory \"%s\" while scanning for symlinks, ignoring: %m", path); |
43b4e305 MS |
942 | continue; |
943 | } | |
944 | ||
466f6979 ZJS |
945 | r = find_symlinks_in_directory(d, path, root_dir, i, |
946 | /* ignore_destination= */ true, | |
947 | /* match_name= */ match_name, | |
948 | /* ignore_same_name= */ ignore_same_name, | |
949 | config_path, | |
950 | same_name_link); | |
43b4e305 MS |
951 | if (r > 0) |
952 | return 1; | |
953 | else if (r < 0) | |
e75a26d0 | 954 | log_debug_errno(r, "Failed to look up symlinks in \"%s\": %m", path); |
43b4e305 MS |
955 | } |
956 | ||
38f90179 MY |
957 | /* We didn't find any suitable symlinks in .wants, .requires or .upholds directories, |
958 | * let's look for linked unit files in this directory. */ | |
43b4e305 | 959 | rewinddir(config_dir); |
466f6979 ZJS |
960 | return find_symlinks_in_directory(config_dir, config_path, root_dir, i, |
961 | /* ignore_destination= */ false, | |
962 | /* match_name= */ match_name, | |
963 | /* ignore_same_name= */ ignore_same_name, | |
964 | config_path, | |
965 | same_name_link); | |
83096483 LP |
966 | } |
967 | ||
968 | static int find_symlinks_in_scope( | |
4870133b | 969 | RuntimeScope scope, |
c3e7fba0 | 970 | const LookupPaths *lp, |
0047d54d | 971 | const InstallInfo *info, |
d9b4b48f | 972 | bool match_name, |
83096483 LP |
973 | UnitFileState *state) { |
974 | ||
dfead90d LP |
975 | bool same_name_link_runtime = false, same_name_link_config = false; |
976 | bool enabled_in_runtime = false, enabled_at_all = false; | |
4b37c89f | 977 | bool ignore_same_name = false; |
0ec0deaa | 978 | int r; |
83096483 | 979 | |
c3e7fba0 | 980 | assert(lp); |
4a84db4c | 981 | assert(info); |
83096483 | 982 | |
c3e7fba0 | 983 | /* As we iterate over the list of search paths in lp->search_path, we may encounter "same name" |
4b37c89f | 984 | * symlinks. The ones which are "below" (i.e. have lower priority) than the unit file itself are |
5238e957 | 985 | * effectively masked, so we should ignore them. */ |
4b37c89f | 986 | |
c3e7fba0 | 987 | STRV_FOREACH(p, lp->search_path) { |
dfead90d LP |
988 | bool same_name_link = false; |
989 | ||
4a84db4c | 990 | r = find_symlinks(lp->root_dir, info, match_name, ignore_same_name, *p, &same_name_link); |
dfead90d LP |
991 | if (r < 0) |
992 | return r; | |
993 | if (r > 0) { | |
994 | /* We found symlinks in this dir? Yay! Let's see where precisely it is enabled. */ | |
995 | ||
c3e7fba0 | 996 | if (path_equal_ptr(*p, lp->persistent_config)) { |
dfead90d LP |
997 | /* This is the best outcome, let's return it immediately. */ |
998 | *state = UNIT_FILE_ENABLED; | |
999 | return 1; | |
1000 | } | |
1001 | ||
bb2682bc | 1002 | /* look for global enablement of user units */ |
4870133b | 1003 | if (scope == RUNTIME_SCOPE_USER && path_is_user_config_dir(*p)) { |
d2561cfd ZJS |
1004 | *state = UNIT_FILE_ENABLED; |
1005 | return 1; | |
1006 | } | |
1007 | ||
c3e7fba0 | 1008 | r = path_is_runtime(lp, *p, false); |
dfead90d LP |
1009 | if (r < 0) |
1010 | return r; | |
1011 | if (r > 0) | |
1012 | enabled_in_runtime = true; | |
1013 | else | |
1014 | enabled_at_all = true; | |
1015 | ||
1016 | } else if (same_name_link) { | |
c3e7fba0 | 1017 | if (path_equal_ptr(*p, lp->persistent_config)) |
dfead90d LP |
1018 | same_name_link_config = true; |
1019 | else { | |
c3e7fba0 | 1020 | r = path_is_runtime(lp, *p, false); |
dfead90d LP |
1021 | if (r < 0) |
1022 | return r; | |
1023 | if (r > 0) | |
1024 | same_name_link_runtime = true; | |
1025 | } | |
1026 | } | |
4b37c89f ZJS |
1027 | |
1028 | /* Check if next iteration will be "below" the unit file (either a regular file | |
1029 | * or a symlink), and hence should be ignored */ | |
4a84db4c | 1030 | if (!ignore_same_name && path_startswith(info->path, *p)) |
4b37c89f | 1031 | ignore_same_name = true; |
83096483 LP |
1032 | } |
1033 | ||
dfead90d | 1034 | if (enabled_in_runtime) { |
0ec0deaa | 1035 | *state = UNIT_FILE_ENABLED_RUNTIME; |
dfead90d LP |
1036 | return 1; |
1037 | } | |
1038 | ||
1039 | /* Here's a special rule: if the unit we are looking for is an instance, and it symlinked in the search path | |
1040 | * outside of runtime and configuration directory, then we consider it statically enabled. Note we do that only | |
1041 | * for instance, not for regular names, as those are merely aliases, while instances explicitly instantiate | |
1042 | * something, and hence are a much stronger concept. */ | |
4a84db4c | 1043 | if (enabled_at_all && unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { |
dfead90d LP |
1044 | *state = UNIT_FILE_STATIC; |
1045 | return 1; | |
83096483 LP |
1046 | } |
1047 | ||
1048 | /* Hmm, we didn't find it, but maybe we found the same name | |
1049 | * link? */ | |
dfead90d | 1050 | if (same_name_link_config) { |
0ec0deaa LP |
1051 | *state = UNIT_FILE_LINKED; |
1052 | return 1; | |
1053 | } | |
83096483 LP |
1054 | if (same_name_link_runtime) { |
1055 | *state = UNIT_FILE_LINKED_RUNTIME; | |
1056 | return 1; | |
83096483 LP |
1057 | } |
1058 | ||
1059 | return 0; | |
1060 | } | |
1061 | ||
acb5b834 | 1062 | static void install_info_clear(InstallInfo *i) { |
0ec0deaa LP |
1063 | if (!i) |
1064 | return; | |
83096483 | 1065 | |
acb5b834 ZJS |
1066 | i->name = mfree(i->name); |
1067 | i->path = mfree(i->path); | |
1068 | i->root = mfree(i->root); | |
1069 | i->aliases = strv_free(i->aliases); | |
1070 | i->wanted_by = strv_free(i->wanted_by); | |
1071 | i->required_by = strv_free(i->required_by); | |
38f90179 | 1072 | i->upheld_by = strv_free(i->upheld_by); |
acb5b834 ZJS |
1073 | i->also = strv_free(i->also); |
1074 | i->default_instance = mfree(i->default_instance); | |
1075 | i->symlink_target = mfree(i->symlink_target); | |
0ec0deaa | 1076 | } |
83096483 | 1077 | |
acb5b834 ZJS |
1078 | static InstallInfo* install_info_free(InstallInfo *i) { |
1079 | install_info_clear(i); | |
1080 | return mfree(i); | |
1081 | } | |
1082 | ||
1083 | DEFINE_TRIVIAL_CLEANUP_FUNC(InstallInfo*, install_info_free); | |
1084 | ||
4a84db4c ZJS |
1085 | static void install_context_done(InstallContext *ctx) { |
1086 | assert(ctx); | |
83096483 | 1087 | |
4a84db4c ZJS |
1088 | ctx->will_process = ordered_hashmap_free_with_destructor(ctx->will_process, install_info_free); |
1089 | ctx->have_processed = ordered_hashmap_free_with_destructor(ctx->have_processed, install_info_free); | |
0ec0deaa | 1090 | } |
83096483 | 1091 | |
0047d54d ZJS |
1092 | static InstallInfo *install_info_find(InstallContext *ctx, const char *name) { |
1093 | InstallInfo *i; | |
83096483 | 1094 | |
4a84db4c | 1095 | i = ordered_hashmap_get(ctx->have_processed, name); |
0ec0deaa LP |
1096 | if (i) |
1097 | return i; | |
83096483 | 1098 | |
4a84db4c | 1099 | return ordered_hashmap_get(ctx->will_process, name); |
83096483 LP |
1100 | } |
1101 | ||
af3d8113 | 1102 | static int install_info_may_process( |
0047d54d | 1103 | const InstallInfo *i, |
c3e7fba0 | 1104 | const LookupPaths *lp, |
cd44ec5a | 1105 | InstallChange **changes, |
da6053d0 | 1106 | size_t *n_changes) { |
76adb5b8 | 1107 | assert(i); |
c3e7fba0 | 1108 | assert(lp); |
76adb5b8 | 1109 | |
047d91f9 ZJS |
1110 | /* Checks whether the loaded unit file is one we should process, or is masked, |
1111 | * transient or generated and thus not subject to enable/disable operations. */ | |
76adb5b8 | 1112 | |
94e7298d ZJS |
1113 | if (i->install_mode == INSTALL_MODE_MASKED) |
1114 | return install_changes_add(changes, n_changes, -ERFKILL, i->path, NULL); | |
c3e7fba0 | 1115 | if (path_is_generator(lp, i->path) || |
94e7298d ZJS |
1116 | path_is_transient(lp, i->path)) |
1117 | return install_changes_add(changes, n_changes, -EADDRNOTAVAIL, i->path, NULL); | |
76adb5b8 LP |
1118 | |
1119 | return 0; | |
1120 | } | |
1121 | ||
ff56349d | 1122 | /** |
0047d54d | 1123 | * Adds a new InstallInfo entry under name in the InstallContext.will_process |
ff56349d | 1124 | * hashmap, or retrieves the existing one if already present. |
19539807 ZJS |
1125 | * |
1126 | * Returns negative on error, 0 if the unit was already known, 1 otherwise. | |
ff56349d | 1127 | */ |
83096483 | 1128 | static int install_info_add( |
4a84db4c | 1129 | InstallContext *ctx, |
83096483 | 1130 | const char *name, |
0ec0deaa | 1131 | const char *path, |
de61a04b | 1132 | const char *root, |
19539807 | 1133 | bool auxiliary, |
0047d54d | 1134 | InstallInfo **ret) { |
0ec0deaa | 1135 | |
83096483 LP |
1136 | int r; |
1137 | ||
4a84db4c | 1138 | assert(ctx); |
83096483 | 1139 | |
08f46856 BR |
1140 | if (!name) { |
1141 | /* 'name' and 'path' must not both be null. Check here 'path' using assert_se() to | |
1142 | * workaround a bug in gcc that generates a -Wnonnull warning when calling basename(), | |
1143 | * but this cannot be possible in any code path (See #6119). */ | |
1144 | assert_se(path); | |
2b6bf07d | 1145 | name = basename(path); |
08f46856 | 1146 | } |
83096483 | 1147 | |
7410616c | 1148 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
83096483 LP |
1149 | return -EINVAL; |
1150 | ||
acb5b834 | 1151 | InstallInfo *i = install_info_find(ctx, name); |
0ec0deaa | 1152 | if (i) { |
19539807 ZJS |
1153 | i->auxiliary = i->auxiliary && auxiliary; |
1154 | ||
0ec0deaa LP |
1155 | if (ret) |
1156 | *ret = i; | |
83096483 | 1157 | return 0; |
0ec0deaa | 1158 | } |
83096483 | 1159 | |
acb5b834 ZJS |
1160 | _cleanup_(install_info_freep) InstallInfo *alloc = new(InstallInfo, 1); |
1161 | if (!alloc) | |
83096483 | 1162 | return -ENOMEM; |
d23aeead | 1163 | |
acb5b834 | 1164 | *alloc = (InstallInfo) { |
91810c8f | 1165 | .install_mode = _INSTALL_MODE_INVALID, |
d23aeead LP |
1166 | .auxiliary = auxiliary, |
1167 | }; | |
83096483 | 1168 | |
acb5b834 ZJS |
1169 | alloc->name = strdup(name); |
1170 | if (!alloc->name) | |
1171 | return -ENOMEM; | |
83096483 | 1172 | |
de61a04b | 1173 | if (root) { |
acb5b834 ZJS |
1174 | alloc->root = strdup(root); |
1175 | if (!alloc->root) | |
1176 | return -ENOMEM; | |
de61a04b LP |
1177 | } |
1178 | ||
83096483 | 1179 | if (path) { |
acb5b834 ZJS |
1180 | alloc->path = strdup(path); |
1181 | if (!alloc->path) | |
1182 | return -ENOMEM; | |
83096483 LP |
1183 | } |
1184 | ||
acb5b834 | 1185 | r = ordered_hashmap_ensure_put(&ctx->will_process, &string_hash_ops, alloc->name, alloc); |
83096483 | 1186 | if (r < 0) |
acb5b834 ZJS |
1187 | return r; |
1188 | i = TAKE_PTR(alloc); | |
83096483 | 1189 | |
0ec0deaa LP |
1190 | if (ret) |
1191 | *ret = i; | |
19539807 | 1192 | return 1; |
83096483 LP |
1193 | } |
1194 | ||
a7724589 ZJS |
1195 | static int config_parse_alias( |
1196 | const char *unit, | |
1197 | const char *filename, | |
1198 | unsigned line, | |
1199 | const char *section, | |
1200 | unsigned section_line, | |
1201 | const char *lvalue, | |
1202 | int ltype, | |
1203 | const char *rvalue, | |
1204 | void *data, | |
1205 | void *userdata) { | |
1206 | ||
a7724589 ZJS |
1207 | UnitType type; |
1208 | ||
142468d8 | 1209 | assert(unit); |
a7724589 ZJS |
1210 | assert(filename); |
1211 | assert(lvalue); | |
1212 | assert(rvalue); | |
1213 | ||
142468d8 | 1214 | type = unit_name_to_type(unit); |
a7724589 ZJS |
1215 | if (!unit_type_may_alias(type)) |
1216 | return log_syntax(unit, LOG_WARNING, filename, line, 0, | |
3b8769bd | 1217 | "Alias= is not allowed for %s units, ignoring.", |
a7724589 ZJS |
1218 | unit_type_to_string(type)); |
1219 | ||
1220 | return config_parse_strv(unit, filename, line, section, section_line, | |
1221 | lvalue, ltype, rvalue, data, userdata); | |
1222 | } | |
1223 | ||
d54c4993 LP |
1224 | static int config_parse_also( |
1225 | const char *unit, | |
1226 | const char *filename, | |
1227 | unsigned line, | |
1228 | const char *section, | |
1229 | unsigned section_line, | |
1230 | const char *lvalue, | |
1231 | int ltype, | |
1232 | const char *rvalue, | |
1233 | void *data, | |
1234 | void *userdata) { | |
83096483 | 1235 | |
0047d54d | 1236 | InstallInfo *info = ASSERT_PTR(userdata); |
4a84db4c | 1237 | InstallContext *ctx = ASSERT_PTR(data); |
0ec0deaa | 1238 | int r; |
83096483 | 1239 | |
142468d8 | 1240 | assert(unit); |
83096483 LP |
1241 | assert(filename); |
1242 | assert(lvalue); | |
1243 | assert(rvalue); | |
1244 | ||
0ec0deaa | 1245 | for (;;) { |
a6612e65 | 1246 | _cleanup_free_ char *word = NULL, *printed = NULL; |
03da6513 | 1247 | |
0ec0deaa LP |
1248 | r = extract_first_word(&rvalue, &word, NULL, 0); |
1249 | if (r < 0) | |
1250 | return r; | |
03da6513 SS |
1251 | if (r == 0) |
1252 | break; | |
83096483 | 1253 | |
38e8a6c7 | 1254 | r = install_name_printf(ctx->scope, info, word, &printed); |
d9e5e694 | 1255 | if (r < 0) |
6ec4c852 ZJS |
1256 | return log_syntax(unit, LOG_WARNING, filename, line, r, |
1257 | "Failed to resolve unit name in Also=\"%s\": %m", word); | |
aedd4012 | 1258 | |
4a84db4c | 1259 | r = install_info_add(ctx, printed, NULL, info->root, /* auxiliary= */ true, NULL); |
d9e5e694 | 1260 | if (r < 0) |
83096483 | 1261 | return r; |
aedd4012 | 1262 | |
a6612e65 | 1263 | r = strv_push(&info->also, printed); |
aedd4012 JS |
1264 | if (r < 0) |
1265 | return r; | |
0ec0deaa | 1266 | |
a6612e65 | 1267 | printed = NULL; |
83096483 LP |
1268 | } |
1269 | ||
1270 | return 0; | |
1271 | } | |
1272 | ||
d54c4993 LP |
1273 | static int config_parse_default_instance( |
1274 | const char *unit, | |
1275 | const char *filename, | |
1276 | unsigned line, | |
1277 | const char *section, | |
1278 | unsigned section_line, | |
1279 | const char *lvalue, | |
1280 | int ltype, | |
1281 | const char *rvalue, | |
1282 | void *data, | |
1283 | void *userdata) { | |
1284 | ||
172e9cc3 | 1285 | InstallContext *ctx = ASSERT_PTR(data); |
0047d54d | 1286 | InstallInfo *info = ASSERT_PTR(userdata); |
d7604756 | 1287 | _cleanup_free_ char *printed = NULL; |
d54c4993 LP |
1288 | int r; |
1289 | ||
142468d8 | 1290 | assert(unit); |
d54c4993 LP |
1291 | assert(filename); |
1292 | assert(lvalue); | |
1293 | assert(rvalue); | |
1294 | ||
142468d8 | 1295 | if (unit_name_is_valid(unit, UNIT_NAME_INSTANCE)) |
6597fa61 ZJS |
1296 | /* When enabling an instance, we might be using a template unit file, |
1297 | * but we should ignore DefaultInstance silently. */ | |
1298 | return 0; | |
142468d8 | 1299 | if (!unit_name_is_valid(unit, UNIT_NAME_TEMPLATE)) |
6597fa61 | 1300 | return log_syntax(unit, LOG_WARNING, filename, line, 0, |
10d67460 | 1301 | "DefaultInstance= only makes sense for template units, ignoring."); |
6597fa61 | 1302 | |
38e8a6c7 | 1303 | r = install_name_printf(ctx->scope, info, rvalue, &printed); |
d54c4993 | 1304 | if (r < 0) |
6ec4c852 ZJS |
1305 | return log_syntax(unit, LOG_WARNING, filename, line, r, |
1306 | "Failed to resolve instance name in DefaultInstance=\"%s\": %m", rvalue); | |
d54c4993 | 1307 | |
6ec4c852 ZJS |
1308 | if (isempty(printed)) |
1309 | printed = mfree(printed); | |
b5395600 | 1310 | |
6ec4c852 | 1311 | if (printed && !unit_instance_is_valid(printed)) |
e5171296 ZJS |
1312 | return log_syntax(unit, LOG_WARNING, filename, line, SYNTHETIC_ERRNO(EINVAL), |
1313 | "Invalid DefaultInstance= value \"%s\".", printed); | |
d54c4993 | 1314 | |
4a84db4c | 1315 | return free_and_replace(info->default_instance, printed); |
d54c4993 LP |
1316 | } |
1317 | ||
83096483 | 1318 | static int unit_file_load( |
4a84db4c | 1319 | InstallContext *ctx, |
0047d54d | 1320 | InstallInfo *info, |
83096483 | 1321 | const char *path, |
d04a9386 | 1322 | const char *root_dir, |
0ec0deaa | 1323 | SearchFlags flags) { |
83096483 | 1324 | |
f975e971 | 1325 | const ConfigTableItem items[] = { |
a7724589 | 1326 | { "Install", "Alias", config_parse_alias, 0, &info->aliases }, |
d54c4993 LP |
1327 | { "Install", "WantedBy", config_parse_strv, 0, &info->wanted_by }, |
1328 | { "Install", "RequiredBy", config_parse_strv, 0, &info->required_by }, | |
38f90179 | 1329 | { "Install", "UpheldBy", config_parse_strv, 0, &info->upheld_by }, |
d54c4993 | 1330 | { "Install", "DefaultInstance", config_parse_default_instance, 0, info }, |
4a84db4c | 1331 | { "Install", "Also", config_parse_also, 0, ctx }, |
d54c4993 | 1332 | {} |
83096483 LP |
1333 | }; |
1334 | ||
133e5b36 | 1335 | UnitType type; |
7fd1b19b | 1336 | _cleanup_fclose_ FILE *f = NULL; |
254d1313 | 1337 | _cleanup_close_ int fd = -EBADF; |
0ec0deaa LP |
1338 | struct stat st; |
1339 | int r; | |
83096483 | 1340 | |
83096483 LP |
1341 | assert(info); |
1342 | assert(path); | |
1343 | ||
d04a9386 LP |
1344 | if (!(flags & SEARCH_DROPIN)) { |
1345 | /* Loading or checking for the main unit file… */ | |
133e5b36 | 1346 | |
d04a9386 LP |
1347 | type = unit_name_to_type(info->name); |
1348 | if (type < 0) | |
1349 | return -EINVAL; | |
baaa35ad ZJS |
1350 | if (unit_name_is_valid(info->name, UNIT_NAME_TEMPLATE|UNIT_NAME_INSTANCE) && !unit_type_may_template(type)) |
1351 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
bce84e10 | 1352 | "%s: unit type %s cannot be templated, ignoring.", path, unit_type_to_string(type)); |
d04a9386 LP |
1353 | |
1354 | if (!(flags & SEARCH_LOAD)) { | |
4276749d | 1355 | if (lstat(path, &st) < 0) |
d04a9386 LP |
1356 | return -errno; |
1357 | ||
1358 | if (null_or_empty(&st)) | |
91810c8f | 1359 | info->install_mode = INSTALL_MODE_MASKED; |
d04a9386 | 1360 | else if (S_ISREG(st.st_mode)) |
91810c8f | 1361 | info->install_mode = INSTALL_MODE_REGULAR; |
d04a9386 LP |
1362 | else if (S_ISLNK(st.st_mode)) |
1363 | return -ELOOP; | |
1364 | else if (S_ISDIR(st.st_mode)) | |
1365 | return -EISDIR; | |
1366 | else | |
1367 | return -ENOTTY; | |
1368 | ||
1369 | return 0; | |
1370 | } | |
1371 | ||
1372 | fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW); | |
1373 | if (fd < 0) | |
d25e100b | 1374 | return -errno; |
d04a9386 LP |
1375 | } else { |
1376 | /* 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 | 1377 | |
d04a9386 LP |
1378 | if (!(flags & SEARCH_LOAD)) |
1379 | return 0; | |
0ec0deaa | 1380 | |
f461a28d | 1381 | fd = chase_and_open(path, root_dir, 0, O_RDONLY|O_CLOEXEC|O_NOCTTY, NULL); |
d04a9386 LP |
1382 | if (fd < 0) |
1383 | return fd; | |
e94937df LN |
1384 | } |
1385 | ||
0ec0deaa LP |
1386 | if (fstat(fd, &st) < 0) |
1387 | return -errno; | |
d04a9386 | 1388 | |
0ec0deaa | 1389 | if (null_or_empty(&st)) { |
d04a9386 | 1390 | if ((flags & SEARCH_DROPIN) == 0) |
91810c8f | 1391 | info->install_mode = INSTALL_MODE_MASKED; |
d04a9386 | 1392 | |
0ec0deaa LP |
1393 | return 0; |
1394 | } | |
3cc44114 LP |
1395 | |
1396 | r = stat_verify_regular(&st); | |
1397 | if (r < 0) | |
1398 | return r; | |
83096483 | 1399 | |
4fa744a3 | 1400 | f = take_fdopen(&fd, "r"); |
0ec0deaa LP |
1401 | if (!f) |
1402 | return -errno; | |
83096483 | 1403 | |
4a84db4c ZJS |
1404 | /* ctx is only needed if we actually load the file (it's referenced from items[] btw, in case you wonder.) */ |
1405 | assert(ctx); | |
d04a9386 | 1406 | |
142468d8 | 1407 | r = config_parse(info->name, path, f, |
f4331d0d ZJS |
1408 | "Install\0" |
1409 | "-Unit\0" | |
1410 | "-Automount\0" | |
1411 | "-Device\0" | |
1412 | "-Mount\0" | |
1413 | "-Path\0" | |
1414 | "-Scope\0" | |
1415 | "-Service\0" | |
1416 | "-Slice\0" | |
1417 | "-Socket\0" | |
1418 | "-Swap\0" | |
1419 | "-Target\0" | |
1420 | "-Timer\0", | |
36f822c4 | 1421 | config_item_table_lookup, items, |
7ade8982 | 1422 | 0, info, |
4f9ff96a | 1423 | NULL); |
83096483 | 1424 | if (r < 0) |
e75a26d0 | 1425 | return log_debug_errno(r, "Failed to parse \"%s\": %m", info->name); |
83096483 | 1426 | |
d04a9386 | 1427 | if ((flags & SEARCH_DROPIN) == 0) |
91810c8f | 1428 | info->install_mode = INSTALL_MODE_REGULAR; |
aedd4012 | 1429 | |
78d54bd4 | 1430 | return |
693eb9a2 LP |
1431 | (int) strv_length(info->aliases) + |
1432 | (int) strv_length(info->wanted_by) + | |
38f90179 MY |
1433 | (int) strv_length(info->required_by) + |
1434 | (int) strv_length(info->upheld_by); | |
83096483 LP |
1435 | } |
1436 | ||
0ec0deaa | 1437 | static int unit_file_load_or_readlink( |
4a84db4c | 1438 | InstallContext *ctx, |
0047d54d | 1439 | InstallInfo *info, |
0ec0deaa | 1440 | const char *path, |
c3e7fba0 | 1441 | const LookupPaths *lp, |
0ec0deaa | 1442 | SearchFlags flags) { |
0ec0deaa LP |
1443 | int r; |
1444 | ||
4a84db4c | 1445 | r = unit_file_load(ctx, info, path, lp->root_dir, flags); |
d04a9386 | 1446 | if (r != -ELOOP || (flags & SEARCH_DROPIN)) |
0ec0deaa LP |
1447 | return r; |
1448 | ||
047d37dc ZJS |
1449 | /* This is a symlink, let's read and verify it. */ |
1450 | r = unit_file_resolve_symlink(lp->root_dir, lp->search_path, | |
1451 | NULL, AT_FDCWD, path, | |
1452 | true, &info->symlink_target); | |
1453 | if (r < 0) | |
1454 | return r; | |
48ed75ad | 1455 | bool outside_search_path = r > 0; |
4276749d | 1456 | |
047d37dc ZJS |
1457 | r = null_or_empty_path_with_root(info->symlink_target, lp->root_dir); |
1458 | if (r < 0 && r != -ENOENT) | |
1459 | return log_debug_errno(r, "Failed to stat %s: %m", info->symlink_target); | |
1460 | if (r > 0) | |
91810c8f | 1461 | info->install_mode = INSTALL_MODE_MASKED; |
48ed75ad | 1462 | else if (outside_search_path) |
91810c8f | 1463 | info->install_mode = INSTALL_MODE_LINKED; |
047d37dc | 1464 | else |
91810c8f | 1465 | info->install_mode = INSTALL_MODE_ALIAS; |
0ec0deaa LP |
1466 | |
1467 | return 0; | |
1468 | } | |
1469 | ||
83096483 | 1470 | static int unit_file_search( |
4a84db4c | 1471 | InstallContext *ctx, |
0047d54d | 1472 | InstallInfo *info, |
c3e7fba0 | 1473 | const LookupPaths *lp, |
0ec0deaa | 1474 | SearchFlags flags) { |
83096483 | 1475 | |
d04a9386 LP |
1476 | const char *dropin_dir_name = NULL, *dropin_template_dir_name = NULL; |
1477 | _cleanup_strv_free_ char **dirs = NULL, **files = NULL; | |
64f9280e | 1478 | _cleanup_free_ char *template = NULL; |
142468d8 | 1479 | bool found_unit = false; |
d04a9386 | 1480 | int r, result; |
83096483 | 1481 | |
83096483 | 1482 | assert(info); |
c3e7fba0 | 1483 | assert(lp); |
83096483 | 1484 | |
0ec0deaa | 1485 | /* Was this unit already loaded? */ |
91810c8f | 1486 | if (info->install_mode != _INSTALL_MODE_INVALID) |
0ec0deaa LP |
1487 | return 0; |
1488 | ||
278fa575 | 1489 | if (info->path) |
4a84db4c | 1490 | return unit_file_load_or_readlink(ctx, info, info->path, lp, flags); |
83096483 LP |
1491 | |
1492 | assert(info->name); | |
1493 | ||
142468d8 JL |
1494 | if (unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { |
1495 | r = unit_name_template(info->name, &template); | |
1496 | if (r < 0) | |
1497 | return r; | |
1498 | } | |
1499 | ||
c3e7fba0 | 1500 | STRV_FOREACH(p, lp->search_path) { |
e50bd775 | 1501 | _cleanup_free_ char *path = NULL; |
83096483 | 1502 | |
657ee2d8 | 1503 | path = path_join(*p, info->name); |
83096483 LP |
1504 | if (!path) |
1505 | return -ENOMEM; | |
1506 | ||
4a84db4c | 1507 | r = unit_file_load_or_readlink(ctx, info, path, lp, flags); |
0155928c | 1508 | if (r >= 0) { |
ae2a15bc | 1509 | info->path = TAKE_PTR(path); |
142468d8 JL |
1510 | result = r; |
1511 | found_unit = true; | |
1512 | break; | |
a1feacf7 | 1513 | } else if (!IN_SET(r, -ENOENT, -ENOTDIR, -EACCES)) |
0155928c | 1514 | return r; |
e50bd775 | 1515 | } |
62b00233 | 1516 | |
142468d8 JL |
1517 | if (!found_unit && template) { |
1518 | ||
e50bd775 LP |
1519 | /* Unit file doesn't exist, however instance |
1520 | * enablement was requested. We will check if it is | |
1521 | * possible to load template unit file. */ | |
29283ea4 | 1522 | |
c3e7fba0 | 1523 | STRV_FOREACH(p, lp->search_path) { |
e50bd775 LP |
1524 | _cleanup_free_ char *path = NULL; |
1525 | ||
657ee2d8 | 1526 | path = path_join(*p, template); |
62b00233 ZJS |
1527 | if (!path) |
1528 | return -ENOMEM; | |
29283ea4 | 1529 | |
4a84db4c | 1530 | r = unit_file_load_or_readlink(ctx, info, path, lp, flags); |
0155928c | 1531 | if (r >= 0) { |
ae2a15bc | 1532 | info->path = TAKE_PTR(path); |
142468d8 JL |
1533 | result = r; |
1534 | found_unit = true; | |
1535 | break; | |
a1feacf7 | 1536 | } else if (!IN_SET(r, -ENOENT, -ENOTDIR, -EACCES)) |
0155928c | 1537 | return r; |
29283ea4 | 1538 | } |
83096483 LP |
1539 | } |
1540 | ||
baaa35ad ZJS |
1541 | if (!found_unit) |
1542 | return log_debug_errno(SYNTHETIC_ERRNO(ENOENT), | |
1543 | "Cannot find unit %s%s%s.", | |
1544 | info->name, template ? " or " : "", strempty(template)); | |
142468d8 | 1545 | |
91810c8f | 1546 | if (info->install_mode == INSTALL_MODE_MASKED) |
9639b175 FB |
1547 | return result; |
1548 | ||
142468d8 JL |
1549 | /* Search for drop-in directories */ |
1550 | ||
1551 | dropin_dir_name = strjoina(info->name, ".d"); | |
c3e7fba0 | 1552 | STRV_FOREACH(p, lp->search_path) { |
142468d8 JL |
1553 | char *path; |
1554 | ||
62a85ee0 | 1555 | path = path_join(*p, dropin_dir_name); |
142468d8 JL |
1556 | if (!path) |
1557 | return -ENOMEM; | |
1558 | ||
1559 | r = strv_consume(&dirs, path); | |
1560 | if (r < 0) | |
1561 | return r; | |
1562 | } | |
1563 | ||
1564 | if (template) { | |
1565 | dropin_template_dir_name = strjoina(template, ".d"); | |
c3e7fba0 | 1566 | STRV_FOREACH(p, lp->search_path) { |
142468d8 JL |
1567 | char *path; |
1568 | ||
62a85ee0 | 1569 | path = path_join(*p, dropin_template_dir_name); |
142468d8 JL |
1570 | if (!path) |
1571 | return -ENOMEM; | |
1572 | ||
1573 | r = strv_consume(&dirs, path); | |
1574 | if (r < 0) | |
1575 | return r; | |
1576 | } | |
1577 | } | |
1578 | ||
1579 | /* Load drop-in conf files */ | |
1580 | ||
1581 | r = conf_files_list_strv(&files, ".conf", NULL, 0, (const char**) dirs); | |
1582 | if (r < 0) | |
1583 | return log_debug_errno(r, "Failed to get list of conf files: %m"); | |
1584 | ||
1585 | STRV_FOREACH(p, files) { | |
4a84db4c | 1586 | r = unit_file_load_or_readlink(ctx, info, *p, lp, flags | SEARCH_DROPIN); |
142468d8 | 1587 | if (r < 0) |
e75a26d0 | 1588 | return log_debug_errno(r, "Failed to load conf file \"%s\": %m", *p); |
142468d8 JL |
1589 | } |
1590 | ||
1591 | return result; | |
83096483 LP |
1592 | } |
1593 | ||
0ec0deaa | 1594 | static int install_info_follow( |
4a84db4c | 1595 | InstallContext *ctx, |
0047d54d | 1596 | InstallInfo *info, |
c3e7fba0 | 1597 | const LookupPaths *lp, |
9f6cbcf5 LP |
1598 | SearchFlags flags, |
1599 | bool ignore_different_name) { | |
0ec0deaa | 1600 | |
4a84db4c ZJS |
1601 | assert(ctx); |
1602 | assert(info); | |
0ec0deaa | 1603 | |
91810c8f | 1604 | if (!IN_SET(info->install_mode, INSTALL_MODE_ALIAS, INSTALL_MODE_LINKED)) |
0ec0deaa | 1605 | return -EINVAL; |
4a84db4c | 1606 | if (!info->symlink_target) |
0ec0deaa LP |
1607 | return -EINVAL; |
1608 | ||
4f5c2485 | 1609 | /* If the basename doesn't match, the caller should add a complete new entry for this. */ |
0ec0deaa | 1610 | |
4a84db4c | 1611 | if (!ignore_different_name && !streq(basename(info->symlink_target), info->name)) |
0ec0deaa LP |
1612 | return -EXDEV; |
1613 | ||
4a84db4c | 1614 | free_and_replace(info->path, info->symlink_target); |
91810c8f | 1615 | info->install_mode = _INSTALL_MODE_INVALID; |
0ec0deaa | 1616 | |
4a84db4c | 1617 | return unit_file_load_or_readlink(ctx, info, info->path, lp, flags); |
0ec0deaa LP |
1618 | } |
1619 | ||
64f9280e | 1620 | /** |
ff56349d ZJS |
1621 | * Search for the unit file. If the unit name is a symlink, follow the symlink to the |
1622 | * target, maybe more than once. Propagate the instance name if present. | |
64f9280e | 1623 | */ |
0ec0deaa | 1624 | static int install_info_traverse( |
4a84db4c | 1625 | InstallContext *ctx, |
c3e7fba0 | 1626 | const LookupPaths *lp, |
0047d54d | 1627 | InstallInfo *start, |
0ec0deaa | 1628 | SearchFlags flags, |
0047d54d | 1629 | InstallInfo **ret) { |
83096483 | 1630 | |
0047d54d | 1631 | InstallInfo *i; |
0ec0deaa | 1632 | unsigned k = 0; |
83096483 LP |
1633 | int r; |
1634 | ||
c3e7fba0 | 1635 | assert(lp); |
0ec0deaa | 1636 | assert(start); |
4a84db4c | 1637 | assert(ctx); |
83096483 | 1638 | |
4a84db4c | 1639 | r = unit_file_search(ctx, start, lp, flags); |
83096483 LP |
1640 | if (r < 0) |
1641 | return r; | |
1642 | ||
0ec0deaa | 1643 | i = start; |
91810c8f | 1644 | while (IN_SET(i->install_mode, INSTALL_MODE_ALIAS, INSTALL_MODE_LINKED)) { |
0ec0deaa | 1645 | /* Follow the symlink */ |
83096483 | 1646 | |
0ec0deaa LP |
1647 | if (++k > UNIT_FILE_FOLLOW_SYMLINK_MAX) |
1648 | return -ELOOP; | |
83096483 | 1649 | |
e1c5c2b0 | 1650 | if (!(flags & SEARCH_FOLLOW_CONFIG_SYMLINKS)) { |
c3e7fba0 | 1651 | r = path_is_config(lp, i->path, true); |
e1c5c2b0 LP |
1652 | if (r < 0) |
1653 | return r; | |
1654 | if (r > 0) | |
1655 | return -ELOOP; | |
1656 | } | |
83096483 | 1657 | |
48eadb9d ZJS |
1658 | r = install_info_follow(ctx, i, lp, flags, |
1659 | /* If linked, don't look at the target name */ | |
91810c8f | 1660 | /* ignore_different_name= */ i->install_mode == INSTALL_MODE_LINKED); |
19cfda9f | 1661 | if (r == -EXDEV && i->symlink_target) { |
0ec0deaa LP |
1662 | _cleanup_free_ char *buffer = NULL; |
1663 | const char *bn; | |
83096483 | 1664 | |
4f5c2485 | 1665 | /* Target is an alias, create a new install info object and continue with that. */ |
83096483 | 1666 | |
0ec0deaa | 1667 | bn = basename(i->symlink_target); |
83096483 | 1668 | |
0ec0deaa LP |
1669 | if (unit_name_is_valid(i->name, UNIT_NAME_INSTANCE) && |
1670 | unit_name_is_valid(bn, UNIT_NAME_TEMPLATE)) { | |
83096483 | 1671 | |
0ec0deaa LP |
1672 | _cleanup_free_ char *instance = NULL; |
1673 | ||
1674 | r = unit_name_to_instance(i->name, &instance); | |
1675 | if (r < 0) | |
1676 | return r; | |
1677 | ||
1678 | r = unit_name_replace_instance(bn, instance, &buffer); | |
1679 | if (r < 0) | |
1680 | return r; | |
1681 | ||
9f6cbcf5 LP |
1682 | if (streq(buffer, i->name)) { |
1683 | ||
4f5c2485 ZJS |
1684 | /* We filled in the instance, and the target stayed the same? If so, |
1685 | * then let's honour the link as it is. */ | |
9f6cbcf5 | 1686 | |
4a84db4c | 1687 | r = install_info_follow(ctx, i, lp, flags, true); |
9f6cbcf5 LP |
1688 | if (r < 0) |
1689 | return r; | |
1690 | ||
1691 | continue; | |
1692 | } | |
1693 | ||
0ec0deaa LP |
1694 | bn = buffer; |
1695 | } | |
1696 | ||
4a84db4c | 1697 | r = install_info_add(ctx, bn, NULL, lp->root_dir, /* auxiliary= */ false, &i); |
0ec0deaa LP |
1698 | if (r < 0) |
1699 | return r; | |
1700 | ||
0155928c | 1701 | /* Try again, with the new target we found. */ |
4a84db4c | 1702 | r = unit_file_search(ctx, i, lp, flags); |
893275df ZJS |
1703 | if (r == -ENOENT) |
1704 | /* Translate error code to highlight this specific case */ | |
1705 | return -ENOLINK; | |
0ec0deaa LP |
1706 | } |
1707 | ||
0155928c ZJS |
1708 | if (r < 0) |
1709 | return r; | |
83096483 LP |
1710 | } |
1711 | ||
0ec0deaa LP |
1712 | if (ret) |
1713 | *ret = i; | |
83096483 | 1714 | |
0ec0deaa LP |
1715 | return 0; |
1716 | } | |
83096483 | 1717 | |
ff56349d ZJS |
1718 | /** |
1719 | * Call install_info_add() with name_or_path as the path (if name_or_path starts with "/") | |
1720 | * or the name (otherwise). root_dir is prepended to the path. | |
1721 | */ | |
401017e0 | 1722 | static int install_info_add_auto( |
4a84db4c | 1723 | InstallContext *ctx, |
c3e7fba0 | 1724 | const LookupPaths *lp, |
401017e0 | 1725 | const char *name_or_path, |
0047d54d | 1726 | InstallInfo **ret) { |
401017e0 | 1727 | |
4a84db4c | 1728 | assert(ctx); |
401017e0 LP |
1729 | assert(name_or_path); |
1730 | ||
1731 | if (path_is_absolute(name_or_path)) { | |
1732 | const char *pp; | |
1733 | ||
c3e7fba0 | 1734 | pp = prefix_roota(lp->root_dir, name_or_path); |
401017e0 | 1735 | |
4a84db4c | 1736 | return install_info_add(ctx, NULL, pp, lp->root_dir, /* auxiliary= */ false, ret); |
401017e0 | 1737 | } else |
4a84db4c | 1738 | return install_info_add(ctx, name_or_path, NULL, lp->root_dir, /* auxiliary= */ false, ret); |
401017e0 LP |
1739 | } |
1740 | ||
0ec0deaa | 1741 | static int install_info_discover( |
4a84db4c | 1742 | InstallContext *ctx, |
c3e7fba0 | 1743 | const LookupPaths *lp, |
0f87041f | 1744 | const char *name_or_path, |
0ec0deaa | 1745 | SearchFlags flags, |
0047d54d | 1746 | InstallInfo **ret, |
cd44ec5a | 1747 | InstallChange **changes, |
da6053d0 | 1748 | size_t *n_changes) { |
83096483 | 1749 | |
0047d54d | 1750 | InstallInfo *info; |
0ec0deaa | 1751 | int r; |
83096483 | 1752 | |
4a84db4c | 1753 | assert(ctx); |
c3e7fba0 | 1754 | assert(lp); |
0f87041f | 1755 | assert(name_or_path); |
0ec0deaa | 1756 | |
0f87041f | 1757 | r = install_info_add_auto(ctx, lp, name_or_path, &info); |
59108fbe | 1758 | if (r >= 0) |
4a84db4c | 1759 | r = install_info_traverse(ctx, lp, info, flags, ret); |
83096483 | 1760 | |
59108fbe | 1761 | if (r < 0) |
cd44ec5a | 1762 | install_changes_add(changes, n_changes, r, name_or_path, NULL); |
59108fbe | 1763 | return r; |
83096483 LP |
1764 | } |
1765 | ||
1e475a0a | 1766 | static int install_info_discover_and_check( |
4a84db4c ZJS |
1767 | InstallContext *ctx, |
1768 | const LookupPaths *lp, | |
0f87041f | 1769 | const char *name_or_path, |
4a84db4c | 1770 | SearchFlags flags, |
0047d54d | 1771 | InstallInfo **ret, |
cd44ec5a | 1772 | InstallChange **changes, |
4a84db4c | 1773 | size_t *n_changes) { |
1e475a0a RB |
1774 | |
1775 | int r; | |
1776 | ||
0f87041f | 1777 | r = install_info_discover(ctx, lp, name_or_path, flags, ret, changes, n_changes); |
1e475a0a RB |
1778 | if (r < 0) |
1779 | return r; | |
1780 | ||
c3e7fba0 | 1781 | return install_info_may_process(ret ? *ret : NULL, lp, changes, n_changes); |
1e475a0a RB |
1782 | } |
1783 | ||
cbfdbffb | 1784 | int unit_file_verify_alias( |
0047d54d | 1785 | const InstallInfo *info, |
cbfdbffb ZJS |
1786 | const char *dst, |
1787 | char **ret_dst, | |
cd44ec5a | 1788 | InstallChange **changes, |
cbfdbffb ZJS |
1789 | size_t *n_changes) { |
1790 | ||
3f57bc22 | 1791 | _cleanup_free_ char *dst_updated = NULL; |
aa0f357f ZJS |
1792 | int r; |
1793 | ||
3f57bc22 ZJS |
1794 | /* Verify that dst is a valid either a valid alias or a valid .wants/.requires symlink for the target |
1795 | * unit *i. Return negative on error or if not compatible, zero on success. | |
1796 | * | |
1797 | * ret_dst is set in cases where "instance propagation" happens, i.e. when the instance part is | |
1798 | * inserted into dst. It is not normally set, even on success, so that the caller can easily | |
162392b7 | 1799 | * distinguish the case where instance propagation occurred. |
f663e646 ZJS |
1800 | * |
1801 | * Returns: | |
1802 | * -EXDEV when the alias doesn't match the unit, | |
1803 | * -EUCLEAN when the name is invalid, | |
1804 | * -ELOOP when the alias it to the unit itself. | |
3f57bc22 ZJS |
1805 | */ |
1806 | ||
1807 | const char *path_alias = strrchr(dst, '/'); | |
1808 | if (path_alias) { | |
1809 | /* This branch covers legacy Alias= function of creating .wants and .requires symlinks. */ | |
1810 | _cleanup_free_ char *dir = NULL; | |
1bf15585 | 1811 | char *p; |
aa0f357f | 1812 | |
3f57bc22 | 1813 | path_alias ++; /* skip over slash */ |
aa0f357f | 1814 | |
45519d13 LP |
1815 | r = path_extract_directory(dst, &dir); |
1816 | if (r < 0) | |
1817 | return log_error_errno(r, "Failed to extract parent directory from '%s': %m", dst); | |
aa0f357f | 1818 | |
1bf15585 ZJS |
1819 | p = endswith(dir, ".wants"); |
1820 | if (!p) | |
1821 | p = endswith(dir, ".requires"); | |
cbfdbffb | 1822 | if (!p) { |
cd44ec5a | 1823 | install_changes_add(changes, n_changes, -EXDEV, dst, NULL); |
cbfdbffb ZJS |
1824 | return log_debug_errno(SYNTHETIC_ERRNO(EXDEV), "Invalid path \"%s\" in alias.", dir); |
1825 | } | |
1826 | ||
1bf15585 ZJS |
1827 | *p = '\0'; /* dir should now be a unit name */ |
1828 | ||
73ce91a0 | 1829 | UnitNameFlags type = unit_name_classify(dir); |
cbfdbffb | 1830 | if (type < 0) { |
cd44ec5a | 1831 | install_changes_add(changes, n_changes, -EXDEV, dst, NULL); |
cbfdbffb ZJS |
1832 | return log_debug_errno(SYNTHETIC_ERRNO(EXDEV), |
1833 | "Invalid unit name component \"%s\" in alias.", dir); | |
1834 | } | |
1bf15585 | 1835 | |
73ce91a0 | 1836 | const bool instance_propagation = type == UNIT_NAME_TEMPLATE; |
3f57bc22 ZJS |
1837 | |
1838 | /* That's the name we want to use for verification. */ | |
4a84db4c | 1839 | r = unit_symlink_name_compatible(path_alias, info->name, instance_propagation); |
aa0f357f | 1840 | if (r < 0) |
3f57bc22 | 1841 | return log_error_errno(r, "Failed to verify alias validity: %m"); |
cbfdbffb | 1842 | if (r == 0) { |
cd44ec5a | 1843 | install_changes_add(changes, n_changes, -EXDEV, dst, info->name); |
cbfdbffb ZJS |
1844 | return log_debug_errno(SYNTHETIC_ERRNO(EXDEV), |
1845 | "Invalid unit \"%s\" symlink \"%s\".", | |
1846 | info->name, dst); | |
1847 | } | |
3f57bc22 ZJS |
1848 | |
1849 | } else { | |
1850 | /* If the symlink target has an instance set and the symlink source doesn't, we "propagate | |
1851 | * the instance", i.e. instantiate the symlink source with the target instance. */ | |
1852 | if (unit_name_is_valid(dst, UNIT_NAME_TEMPLATE)) { | |
1853 | _cleanup_free_ char *inst = NULL; | |
1854 | ||
4a84db4c | 1855 | UnitNameFlags type = unit_name_to_instance(info->name, &inst); |
cbfdbffb | 1856 | if (type < 0) { |
cd44ec5a | 1857 | install_changes_add(changes, n_changes, -EUCLEAN, info->name, NULL); |
cbfdbffb ZJS |
1858 | return log_debug_errno(type, "Failed to extract instance name from \"%s\": %m", info->name); |
1859 | } | |
3f57bc22 | 1860 | |
73ce91a0 | 1861 | if (type == UNIT_NAME_INSTANCE) { |
3f57bc22 ZJS |
1862 | r = unit_name_replace_instance(dst, inst, &dst_updated); |
1863 | if (r < 0) | |
1864 | return log_error_errno(r, "Failed to build unit name from %s+%s: %m", | |
1865 | dst, inst); | |
1866 | } | |
1867 | } | |
aa0f357f | 1868 | |
cbfdbffb | 1869 | r = unit_validate_alias_symlink_or_warn(LOG_DEBUG, dst_updated ?: dst, info->name); |
f663e646 ZJS |
1870 | if (r == -ELOOP) /* -ELOOP means self-alias, which we (quietly) ignore */ |
1871 | return r; | |
94e7298d ZJS |
1872 | if (r < 0) |
1873 | return install_changes_add(changes, n_changes, | |
1874 | r == -EINVAL ? -EXDEV : r, | |
1875 | dst_updated ?: dst, | |
1876 | info->name); | |
aa0f357f ZJS |
1877 | } |
1878 | ||
3f57bc22 | 1879 | *ret_dst = TAKE_PTR(dst_updated); |
aa0f357f ZJS |
1880 | return 0; |
1881 | } | |
1882 | ||
83096483 | 1883 | static int install_info_symlink_alias( |
4870133b | 1884 | RuntimeScope scope, |
0047d54d | 1885 | InstallInfo *info, |
c3e7fba0 | 1886 | const LookupPaths *lp, |
83096483 LP |
1887 | const char *config_path, |
1888 | bool force, | |
cd44ec5a | 1889 | InstallChange **changes, |
da6053d0 | 1890 | size_t *n_changes) { |
83096483 | 1891 | |
83096483 LP |
1892 | int r = 0, q; |
1893 | ||
4a84db4c | 1894 | assert(info); |
c3e7fba0 | 1895 | assert(lp); |
83096483 LP |
1896 | assert(config_path); |
1897 | ||
4a84db4c | 1898 | STRV_FOREACH(s, info->aliases) { |
3f57bc22 | 1899 | _cleanup_free_ char *alias_path = NULL, *dst = NULL, *dst_updated = NULL; |
c067e61b | 1900 | bool broken; |
83096483 | 1901 | |
38e8a6c7 | 1902 | q = install_name_printf(scope, info, *s, &dst); |
6ec4c852 | 1903 | if (q < 0) { |
cd44ec5a | 1904 | install_changes_add(changes, n_changes, q, *s, NULL); |
0d11db59 ZJS |
1905 | r = r < 0 ? r : q; |
1906 | continue; | |
6ec4c852 | 1907 | } |
83096483 | 1908 | |
cbfdbffb | 1909 | q = unit_file_verify_alias(info, dst, &dst_updated, changes, n_changes); |
f663e646 ZJS |
1910 | if (q == -ELOOP) |
1911 | continue; | |
0d11db59 ZJS |
1912 | if (q < 0) { |
1913 | r = r < 0 ? r : q; | |
aa0f357f | 1914 | continue; |
0d11db59 | 1915 | } |
3d0205f2 | 1916 | |
3f57bc22 | 1917 | alias_path = path_make_absolute(dst_updated ?: dst, config_path); |
83096483 LP |
1918 | if (!alias_path) |
1919 | return -ENOMEM; | |
1920 | ||
f461a28d | 1921 | q = chase(alias_path, lp->root_dir, CHASE_NONEXISTENT, NULL, NULL); |
c067e61b MY |
1922 | if (q < 0 && q != -ENOENT) { |
1923 | r = r < 0 ? r : q; | |
1924 | continue; | |
1925 | } | |
1926 | broken = q == 0; /* symlink target does not exist? */ | |
1927 | ||
1928 | q = create_symlink(lp, info->path, alias_path, force || broken, changes, n_changes); | |
0d11db59 | 1929 | r = r < 0 ? r : q; |
83096483 LP |
1930 | } |
1931 | ||
1932 | return r; | |
1933 | } | |
1934 | ||
1935 | static int install_info_symlink_wants( | |
4870133b | 1936 | RuntimeScope scope, |
9b69770a | 1937 | UnitFileFlags file_flags, |
0047d54d | 1938 | InstallInfo *info, |
c3e7fba0 | 1939 | const LookupPaths *lp, |
83096483 | 1940 | const char *config_path, |
d54c4993 LP |
1941 | char **list, |
1942 | const char *suffix, | |
cd44ec5a | 1943 | InstallChange **changes, |
da6053d0 | 1944 | size_t *n_changes) { |
83096483 | 1945 | |
acb5b834 ZJS |
1946 | _cleanup_(install_info_clear) InstallInfo instance = { |
1947 | .install_mode = _INSTALL_MODE_INVALID, | |
1948 | }; | |
1949 | ||
b0ec372a | 1950 | UnitNameFlags valid_dst_type = UNIT_NAME_ANY; |
d54c4993 | 1951 | const char *n; |
83096483 LP |
1952 | int r = 0, q; |
1953 | ||
4a84db4c | 1954 | assert(info); |
c3e7fba0 | 1955 | assert(lp); |
83096483 LP |
1956 | assert(config_path); |
1957 | ||
047d91f9 ZJS |
1958 | if (strv_isempty(list)) |
1959 | return 0; | |
1960 | ||
4a84db4c | 1961 | if (unit_name_is_valid(info->name, UNIT_NAME_PLAIN | UNIT_NAME_INSTANCE)) |
b0ec372a | 1962 | /* Not a template unit. Use the name directly. */ |
4a84db4c | 1963 | n = info->name; |
b0ec372a | 1964 | |
4a84db4c | 1965 | else if (info->default_instance) { |
b0ec372a | 1966 | /* If this is a template, and we have a default instance, use it. */ |
e4086ae0 | 1967 | |
acb5b834 | 1968 | r = unit_name_replace_instance(info->name, info->default_instance, &instance.name); |
7410616c LP |
1969 | if (r < 0) |
1970 | return r; | |
83096483 | 1971 | |
c3e7fba0 | 1972 | r = unit_file_search(NULL, &instance, lp, SEARCH_FOLLOW_CONFIG_SYMLINKS); |
047d91f9 ZJS |
1973 | if (r < 0) |
1974 | return r; | |
1975 | ||
94e7298d ZJS |
1976 | if (instance.install_mode == INSTALL_MODE_MASKED) |
1977 | return install_changes_add(changes, n_changes, -ERFKILL, instance.path, NULL); | |
047d91f9 | 1978 | |
acb5b834 | 1979 | n = instance.name; |
b0ec372a ZJS |
1980 | |
1981 | } else { | |
1982 | /* We have a template, but no instance yet. When used with an instantiated unit, we will get | |
1983 | * the instance from that unit. Cannot be used with non-instance units. */ | |
1984 | ||
1985 | valid_dst_type = UNIT_NAME_INSTANCE | UNIT_NAME_TEMPLATE; | |
4a84db4c | 1986 | n = info->name; |
b0ec372a | 1987 | } |
78d54bd4 | 1988 | |
f5a0162d | 1989 | r = 0; |
d54c4993 | 1990 | STRV_FOREACH(s, list) { |
9aa3d6b4 | 1991 | _cleanup_free_ char *path = NULL, *dst = NULL; |
78d54bd4 | 1992 | |
38e8a6c7 | 1993 | q = install_name_printf(scope, info, *s, &dst); |
f5a0162d YW |
1994 | if (q < 0) { |
1995 | install_changes_add(changes, n_changes, q, *s, NULL); | |
1996 | if (r >= 0) | |
1997 | r = q; | |
f8979e86 DT |
1998 | |
1999 | continue; | |
f5a0162d | 2000 | } |
7584d236 | 2001 | |
b0ec372a | 2002 | if (!unit_name_is_valid(dst, valid_dst_type)) { |
ad5fdd39 ZJS |
2003 | /* Generate a proper error here: EUCLEAN if the name is generally bad, EIDRM if the |
2004 | * template status doesn't match. If we are doing presets don't bother reporting the | |
2005 | * error. This also covers cases like 'systemctl preset serial-getty@.service', which | |
2006 | * has no DefaultInstance, so there is nothing we can do. At the same time, | |
2007 | * 'systemctl enable serial-getty@.service' should fail, the user should specify an | |
2008 | * instance like in 'systemctl enable serial-getty@ttyS0.service'. | |
2009 | */ | |
2010 | if (file_flags & UNIT_FILE_IGNORE_AUXILIARY_FAILURE) | |
2011 | continue; | |
2012 | ||
94e7298d | 2013 | if (unit_name_is_valid(dst, UNIT_NAME_ANY)) |
f5a0162d | 2014 | q = install_changes_add(changes, n_changes, -EIDRM, dst, n); |
94e7298d | 2015 | else |
f5a0162d YW |
2016 | q = install_changes_add(changes, n_changes, -EUCLEAN, dst, NULL); |
2017 | if (r >= 0) | |
2018 | r = q; | |
b0ec372a | 2019 | |
78d54bd4 LP |
2020 | continue; |
2021 | } | |
2022 | ||
9aa3d6b4 | 2023 | path = strjoin(config_path, "/", dst, suffix, n); |
d54c4993 | 2024 | if (!path) |
78d54bd4 LP |
2025 | return -ENOMEM; |
2026 | ||
9aa3d6b4 | 2027 | q = create_symlink(lp, info->path, path, true, changes, n_changes); |
f5a0162d | 2028 | if ((q < 0 && r >= 0) || r == 0) |
78d54bd4 | 2029 | r = q; |
8ae27441 | 2030 | |
f31f10a6 ZJS |
2031 | if (unit_file_exists(scope, lp, dst) == 0) { |
2032 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_DESTINATION_NOT_PRESENT, dst, info->path); | |
2033 | if (q < 0) | |
2034 | return q; | |
2035 | } | |
78d54bd4 LP |
2036 | } |
2037 | ||
2038 | return r; | |
2039 | } | |
2040 | ||
83096483 | 2041 | static int install_info_symlink_link( |
0047d54d | 2042 | InstallInfo *info, |
c3e7fba0 | 2043 | const LookupPaths *lp, |
83096483 LP |
2044 | const char *config_path, |
2045 | bool force, | |
cd44ec5a | 2046 | InstallChange **changes, |
da6053d0 | 2047 | size_t *n_changes) { |
83096483 | 2048 | |
7fd1b19b | 2049 | _cleanup_free_ char *path = NULL; |
1dacfd2a | 2050 | int r; |
83096483 | 2051 | |
4a84db4c | 2052 | assert(info); |
c3e7fba0 | 2053 | assert(lp); |
83096483 | 2054 | assert(config_path); |
4a84db4c | 2055 | assert(info->path); |
83096483 | 2056 | |
4a84db4c | 2057 | r = in_search_path(lp, info->path); |
fe4aede9 | 2058 | if (r < 0) |
83096483 | 2059 | return r; |
fe4aede9 ZJS |
2060 | if (r > 0) |
2061 | return 0; | |
83096483 | 2062 | |
4a84db4c | 2063 | path = path_join(config_path, info->name); |
1dacfd2a | 2064 | if (!path) |
83096483 LP |
2065 | return -ENOMEM; |
2066 | ||
4a84db4c | 2067 | return create_symlink(lp, info->path, path, force, changes, n_changes); |
83096483 LP |
2068 | } |
2069 | ||
2070 | static int install_info_apply( | |
4870133b | 2071 | RuntimeScope scope, |
9b69770a | 2072 | UnitFileFlags file_flags, |
0047d54d | 2073 | InstallInfo *info, |
c3e7fba0 | 2074 | const LookupPaths *lp, |
83096483 | 2075 | const char *config_path, |
cd44ec5a | 2076 | InstallChange **changes, |
da6053d0 | 2077 | size_t *n_changes) { |
83096483 LP |
2078 | |
2079 | int r, q; | |
2080 | ||
4a84db4c | 2081 | assert(info); |
c3e7fba0 | 2082 | assert(lp); |
83096483 LP |
2083 | assert(config_path); |
2084 | ||
91810c8f | 2085 | if (info->install_mode != INSTALL_MODE_REGULAR) |
0ec0deaa LP |
2086 | return 0; |
2087 | ||
9b69770a ZJS |
2088 | bool force = file_flags & UNIT_FILE_FORCE; |
2089 | ||
20d68b3a ZJS |
2090 | r = install_info_symlink_link(info, lp, config_path, force, changes, n_changes); |
2091 | /* Do not count links to the unit file towards the "carries_install_info" count */ | |
2092 | if (r < 0) | |
2093 | /* If linking of the file failed, do not try to create other symlinks, | |
2094 | * because they might would pointing to a non-existent or wrong unit. */ | |
2095 | return r; | |
2096 | ||
4a84db4c | 2097 | r = install_info_symlink_alias(scope, info, lp, config_path, force, changes, n_changes); |
83096483 | 2098 | |
4a84db4c | 2099 | q = install_info_symlink_wants(scope, file_flags, info, lp, config_path, info->wanted_by, ".wants/", changes, n_changes); |
83096483 LP |
2100 | if (r == 0) |
2101 | r = q; | |
2102 | ||
4a84db4c | 2103 | q = install_info_symlink_wants(scope, file_flags, info, lp, config_path, info->required_by, ".requires/", changes, n_changes); |
78d54bd4 LP |
2104 | if (r == 0) |
2105 | r = q; | |
2106 | ||
38f90179 MY |
2107 | q = install_info_symlink_wants(scope, file_flags, info, lp, config_path, info->upheld_by, ".upholds/", changes, n_changes); |
2108 | if (r == 0) | |
2109 | r = q; | |
2110 | ||
83096483 LP |
2111 | return r; |
2112 | } | |
2113 | ||
2114 | static int install_context_apply( | |
4a84db4c | 2115 | InstallContext *ctx, |
c3e7fba0 | 2116 | const LookupPaths *lp, |
4a84db4c | 2117 | UnitFileFlags file_flags, |
83096483 | 2118 | const char *config_path, |
0ec0deaa | 2119 | SearchFlags flags, |
cd44ec5a | 2120 | InstallChange **changes, |
da6053d0 | 2121 | size_t *n_changes) { |
83096483 | 2122 | |
0047d54d | 2123 | InstallInfo *i; |
0ec0deaa | 2124 | int r; |
83096483 | 2125 | |
4a84db4c | 2126 | assert(ctx); |
c3e7fba0 | 2127 | assert(lp); |
83096483 LP |
2128 | assert(config_path); |
2129 | ||
4a84db4c | 2130 | if (ordered_hashmap_isempty(ctx->will_process)) |
d25e100b | 2131 | return 0; |
83096483 | 2132 | |
4a84db4c | 2133 | r = ordered_hashmap_ensure_allocated(&ctx->have_processed, &string_hash_ops); |
d25e100b LP |
2134 | if (r < 0) |
2135 | return r; | |
83096483 | 2136 | |
2d5c93c7 | 2137 | r = 0; |
4a84db4c | 2138 | while ((i = ordered_hashmap_first(ctx->will_process))) { |
0ec0deaa | 2139 | int q; |
83096483 | 2140 | |
4a84db4c | 2141 | q = ordered_hashmap_move_one(ctx->have_processed, ctx->will_process, i->name); |
0ec0deaa LP |
2142 | if (q < 0) |
2143 | return q; | |
83096483 | 2144 | |
4a84db4c | 2145 | q = install_info_traverse(ctx, lp, i, flags, NULL); |
459500a3 | 2146 | if (q < 0) { |
3aa96361 | 2147 | if (i->auxiliary) { |
4a4af850 | 2148 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_AUXILIARY_FAILED, i->name, NULL); |
3aa96361 ZJS |
2149 | if (q < 0) |
2150 | return q; | |
2151 | continue; | |
2152 | } | |
2153 | ||
94e7298d | 2154 | return install_changes_add(changes, n_changes, q, i->name, NULL); |
db093eed | 2155 | } |
0ec0deaa | 2156 | |
f1651715 | 2157 | /* We can attempt to process a masked unit when a different unit |
047d91f9 | 2158 | * that we were processing specifies it in Also=. */ |
91810c8f | 2159 | if (i->install_mode == INSTALL_MODE_MASKED) { |
f31f10a6 ZJS |
2160 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_IS_MASKED, i->path, NULL); |
2161 | if (q < 0) | |
2162 | return q; | |
f1651715 | 2163 | if (r >= 0) |
047d91f9 ZJS |
2164 | /* Assume that something *could* have been enabled here, |
2165 | * avoid "empty [Install] section" warning. */ | |
f1651715 ZJS |
2166 | r += 1; |
2167 | continue; | |
2168 | } | |
2169 | ||
91810c8f | 2170 | if (i->install_mode != INSTALL_MODE_REGULAR) |
0ec0deaa | 2171 | continue; |
83096483 | 2172 | |
4a84db4c | 2173 | q = install_info_apply(ctx->scope, file_flags, i, lp, config_path, changes, n_changes); |
0ec0deaa LP |
2174 | if (r >= 0) { |
2175 | if (q < 0) | |
2176 | r = q; | |
2177 | else | |
596fc263 | 2178 | r += q; |
0ec0deaa | 2179 | } |
83096483 LP |
2180 | } |
2181 | ||
2182 | return r; | |
2183 | } | |
2184 | ||
2185 | static int install_context_mark_for_removal( | |
4a84db4c | 2186 | InstallContext *ctx, |
c3e7fba0 | 2187 | const LookupPaths *lp, |
83096483 | 2188 | Set **remove_symlinks_to, |
1830ac51 | 2189 | const char *config_path, |
cd44ec5a | 2190 | InstallChange **changes, |
da6053d0 | 2191 | size_t *n_changes) { |
83096483 | 2192 | |
0047d54d | 2193 | InstallInfo *i; |
0ec0deaa | 2194 | int r; |
83096483 | 2195 | |
4a84db4c | 2196 | assert(ctx); |
c3e7fba0 | 2197 | assert(lp); |
1830ac51 | 2198 | assert(config_path); |
83096483 LP |
2199 | |
2200 | /* Marks all items for removal */ | |
2201 | ||
4a84db4c | 2202 | if (ordered_hashmap_isempty(ctx->will_process)) |
d25e100b | 2203 | return 0; |
83096483 | 2204 | |
4a84db4c | 2205 | r = ordered_hashmap_ensure_allocated(&ctx->have_processed, &string_hash_ops); |
d25e100b LP |
2206 | if (r < 0) |
2207 | return r; | |
83096483 | 2208 | |
4a84db4c | 2209 | while ((i = ordered_hashmap_first(ctx->will_process))) { |
83096483 | 2210 | |
4a84db4c | 2211 | r = ordered_hashmap_move_one(ctx->have_processed, ctx->will_process, i->name); |
0ec0deaa | 2212 | if (r < 0) |
83096483 | 2213 | return r; |
29283ea4 | 2214 | |
4a84db4c | 2215 | r = install_info_traverse(ctx, lp, i, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, NULL); |
19539807 | 2216 | if (r == -ENOLINK) { |
637d6e5b | 2217 | log_debug_errno(r, "Name %s leads to a dangling symlink, removing name.", i->name); |
f31f10a6 ZJS |
2218 | r = install_changes_add(changes, n_changes, INSTALL_CHANGE_IS_DANGLING, i->path ?: i->name, NULL); |
2219 | if (r < 0) | |
2220 | return r; | |
637d6e5b | 2221 | } else if (r == -ENOENT) { |
637d6e5b LP |
2222 | if (i->auxiliary) /* some unit specified in Also= or similar is missing */ |
2223 | log_debug_errno(r, "Auxiliary unit of %s not found, removing name.", i->name); | |
2224 | else { | |
2225 | log_debug_errno(r, "Unit %s not found, removing name.", i->name); | |
f31f10a6 ZJS |
2226 | r = install_changes_add(changes, n_changes, r, i->path ?: i->name, NULL); |
2227 | if (r < 0) | |
2228 | return r; | |
637d6e5b | 2229 | } |
637d6e5b LP |
2230 | } else if (r < 0) { |
2231 | log_debug_errno(r, "Failed to find unit %s, removing name: %m", i->name); | |
cd44ec5a | 2232 | install_changes_add(changes, n_changes, r, i->path ?: i->name, NULL); |
91810c8f | 2233 | } else if (i->install_mode == INSTALL_MODE_MASKED) { |
637d6e5b | 2234 | log_debug("Unit file %s is masked, ignoring.", i->name); |
1308f72e | 2235 | install_changes_add(changes, n_changes, INSTALL_CHANGE_IS_MASKED, i->path ?: i->name, NULL); |
637d6e5b | 2236 | continue; |
91810c8f ZJS |
2237 | } else if (i->install_mode != INSTALL_MODE_REGULAR) { |
2238 | log_debug("Unit %s has install mode %s, ignoring.", | |
2239 | i->name, install_mode_to_string(i->install_mode) ?: "invalid"); | |
0ec0deaa | 2240 | continue; |
64f9280e | 2241 | } |
0ec0deaa LP |
2242 | |
2243 | r = mark_symlink_for_removal(remove_symlinks_to, i->name); | |
2244 | if (r < 0) | |
2245 | return r; | |
2246 | } | |
2247 | ||
2248 | return 0; | |
2249 | } | |
2250 | ||
2251 | int unit_file_mask( | |
4870133b | 2252 | RuntimeScope scope, |
b3796dd8 | 2253 | UnitFileFlags flags, |
0ec0deaa | 2254 | const char *root_dir, |
0f87041f | 2255 | char **names, |
cd44ec5a | 2256 | InstallChange **changes, |
da6053d0 | 2257 | size_t *n_changes) { |
0ec0deaa | 2258 | |
c3e7fba0 | 2259 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
e1c5c2b0 | 2260 | const char *config_path; |
0ec0deaa LP |
2261 | int r; |
2262 | ||
2263 | assert(scope >= 0); | |
4870133b | 2264 | assert(scope < _RUNTIME_SCOPE_MAX); |
0ec0deaa | 2265 | |
c3e7fba0 | 2266 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
0ec0deaa LP |
2267 | if (r < 0) |
2268 | return r; | |
2269 | ||
c3e7fba0 | 2270 | config_path = (flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
d0fd66a3 LP |
2271 | if (!config_path) |
2272 | return -ENXIO; | |
e1c5c2b0 | 2273 | |
2886cadc MY |
2274 | r = 0; |
2275 | ||
0f87041f | 2276 | STRV_FOREACH(name, names) { |
0ec0deaa | 2277 | _cleanup_free_ char *path = NULL; |
0ec0deaa | 2278 | |
0f87041f | 2279 | if (!unit_name_is_valid(*name, UNIT_NAME_ANY)) { |
2886cadc | 2280 | RET_GATHER(r, -EINVAL); |
0ec0deaa LP |
2281 | continue; |
2282 | } | |
2283 | ||
0f87041f | 2284 | path = path_make_absolute(*name, config_path); |
0ec0deaa LP |
2285 | if (!path) |
2286 | return -ENOMEM; | |
29283ea4 | 2287 | |
2886cadc | 2288 | RET_GATHER(r, create_symlink(&lp, "/dev/null", path, flags & UNIT_FILE_FORCE, changes, n_changes)); |
83096483 LP |
2289 | } |
2290 | ||
2291 | return r; | |
2292 | } | |
2293 | ||
0ec0deaa | 2294 | int unit_file_unmask( |
4870133b | 2295 | RuntimeScope scope, |
b3796dd8 | 2296 | UnitFileFlags flags, |
0ec0deaa | 2297 | const char *root_dir, |
0f87041f | 2298 | char **names, |
cd44ec5a | 2299 | InstallChange **changes, |
da6053d0 | 2300 | size_t *n_changes) { |
0ec0deaa | 2301 | |
c3e7fba0 | 2302 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
0ec0deaa | 2303 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; |
dc7dd61d | 2304 | _cleanup_strv_free_ char **todo = NULL; |
e1c5c2b0 | 2305 | const char *config_path; |
319a4f4b | 2306 | size_t n_todo = 0; |
0ec0deaa LP |
2307 | int r, q; |
2308 | ||
2309 | assert(scope >= 0); | |
4870133b | 2310 | assert(scope < _RUNTIME_SCOPE_MAX); |
0ec0deaa | 2311 | |
c3e7fba0 | 2312 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
0ec0deaa LP |
2313 | if (r < 0) |
2314 | return r; | |
2315 | ||
c3e7fba0 | 2316 | config_path = (flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
1830ac51 MB |
2317 | if (!config_path) |
2318 | return -ENXIO; | |
2319 | ||
d3e85c9c | 2320 | bool dry_run = flags & UNIT_FILE_DRY_RUN; |
1830ac51 | 2321 | |
0f87041f | 2322 | STRV_FOREACH(name, names) { |
0f87041f | 2323 | if (!unit_name_is_valid(*name, UNIT_NAME_ANY)) |
0ec0deaa LP |
2324 | return -EINVAL; |
2325 | ||
7c52d523 | 2326 | /* If root_dir is set, we don't care about kernel command line or generators. |
bf3b0d5f ZJS |
2327 | * But if it is not set, we need to check for interference. */ |
2328 | if (!root_dir) { | |
2329 | _cleanup_(install_info_clear) InstallInfo info = { | |
2330 | .name = *name, /* We borrow *name temporarily… */ | |
2331 | .install_mode = _INSTALL_MODE_INVALID, | |
2332 | }; | |
2333 | ||
2334 | r = unit_file_search(NULL, &info, &lp, 0); | |
2335 | if (r < 0) { | |
2336 | if (r != -ENOENT) | |
2337 | log_debug_errno(r, "Failed to look up unit %s, ignoring: %m", info.name); | |
f31f10a6 ZJS |
2338 | } else if (info.install_mode == INSTALL_MODE_MASKED && |
2339 | path_is_generator(&lp, info.path)) { | |
2340 | r = install_changes_add(changes, n_changes, | |
2341 | INSTALL_CHANGE_IS_MASKED_GENERATOR, info.name, info.path); | |
2342 | if (r < 0) | |
2343 | return r; | |
bf3b0d5f ZJS |
2344 | } |
2345 | ||
2346 | TAKE_PTR(info.name); /* … and give it back here */ | |
2347 | } | |
2348 | ||
2349 | _cleanup_free_ char *path = path_make_absolute(*name, config_path); | |
1830ac51 MB |
2350 | if (!path) |
2351 | return -ENOMEM; | |
0ec0deaa | 2352 | |
1830ac51 MB |
2353 | r = null_or_empty_path(path); |
2354 | if (r == -ENOENT) | |
2355 | continue; | |
2356 | if (r < 0) | |
2357 | return r; | |
2358 | if (r == 0) | |
2359 | continue; | |
0ec0deaa | 2360 | |
319a4f4b | 2361 | if (!GREEDY_REALLOC0(todo, n_todo + 2)) |
1830ac51 | 2362 | return -ENOMEM; |
d054eae6 | 2363 | |
0f87041f | 2364 | todo[n_todo] = strdup(*name); |
1830ac51 MB |
2365 | if (!todo[n_todo]) |
2366 | return -ENOMEM; | |
4910b350 | 2367 | |
1830ac51 | 2368 | n_todo++; |
0ec0deaa LP |
2369 | } |
2370 | ||
2371 | strv_uniq(todo); | |
2372 | ||
2373 | r = 0; | |
1830ac51 MB |
2374 | STRV_FOREACH(i, todo) { |
2375 | _cleanup_free_ char *path = NULL; | |
2376 | const char *rp; | |
0ec0deaa | 2377 | |
1830ac51 MB |
2378 | path = path_make_absolute(*i, config_path); |
2379 | if (!path) | |
2380 | return -ENOMEM; | |
4910b350 | 2381 | |
1830ac51 MB |
2382 | if (!dry_run && unlink(path) < 0) { |
2383 | if (errno != ENOENT) { | |
2886cadc | 2384 | RET_GATHER(r, -errno); |
cd44ec5a | 2385 | install_changes_add(changes, n_changes, -errno, path, NULL); |
af3d8113 | 2386 | } |
0ec0deaa | 2387 | |
1830ac51 | 2388 | continue; |
4910b350 | 2389 | } |
401017e0 | 2390 | |
f31f10a6 ZJS |
2391 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_UNLINK, path, NULL); |
2392 | if (q < 0) | |
2393 | return q; | |
1830ac51 | 2394 | |
c3e7fba0 | 2395 | rp = skip_root(lp.root_dir, path); |
1830ac51 MB |
2396 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: path); |
2397 | if (q < 0) | |
2398 | return q; | |
0ec0deaa LP |
2399 | } |
2400 | ||
2886cadc | 2401 | RET_GATHER(r, remove_marked_symlinks(remove_symlinks_to, config_path, &lp, dry_run, changes, n_changes)); |
1830ac51 | 2402 | |
0ec0deaa LP |
2403 | return r; |
2404 | } | |
2405 | ||
2406 | int unit_file_link( | |
4870133b | 2407 | RuntimeScope scope, |
b3796dd8 | 2408 | UnitFileFlags flags, |
e94937df LN |
2409 | const char *root_dir, |
2410 | char **files, | |
cd44ec5a | 2411 | InstallChange **changes, |
da6053d0 | 2412 | size_t *n_changes) { |
e94937df | 2413 | |
c3e7fba0 | 2414 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
8af35ba6 | 2415 | _cleanup_strv_free_ char **todo = NULL; |
e1c5c2b0 | 2416 | const char *config_path; |
319a4f4b | 2417 | size_t n_todo = 0; |
0ec0deaa | 2418 | int r, q; |
e94937df LN |
2419 | |
2420 | assert(scope >= 0); | |
4870133b | 2421 | assert(scope < _RUNTIME_SCOPE_MAX); |
e94937df | 2422 | |
c3e7fba0 | 2423 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
e94937df LN |
2424 | if (r < 0) |
2425 | return r; | |
2426 | ||
c3e7fba0 | 2427 | config_path = (flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
d0fd66a3 LP |
2428 | if (!config_path) |
2429 | return -ENXIO; | |
e94937df | 2430 | |
0f87041f | 2431 | STRV_FOREACH(file, files) { |
0ec0deaa LP |
2432 | _cleanup_free_ char *full = NULL; |
2433 | struct stat st; | |
2434 | char *fn; | |
e94937df | 2435 | |
0f87041f | 2436 | if (!path_is_absolute(*file)) |
81de6962 | 2437 | return install_changes_add(changes, n_changes, -EINVAL, *file, NULL); |
e94937df | 2438 | |
0f87041f | 2439 | fn = basename(*file); |
0ec0deaa | 2440 | if (!unit_name_is_valid(fn, UNIT_NAME_ANY)) |
81de6962 | 2441 | return install_changes_add(changes, n_changes, -EUCLEAN, *file, NULL); |
0ec0deaa | 2442 | |
0f87041f | 2443 | full = path_join(lp.root_dir, *file); |
0ec0deaa LP |
2444 | if (!full) |
2445 | return -ENOMEM; | |
2446 | ||
2447 | if (lstat(full, &st) < 0) | |
81de6962 ZJS |
2448 | return install_changes_add(changes, n_changes, -errno, *file, NULL); |
2449 | ||
3cc44114 LP |
2450 | r = stat_verify_regular(&st); |
2451 | if (r < 0) | |
81de6962 | 2452 | return install_changes_add(changes, n_changes, r, *file, NULL); |
0ec0deaa | 2453 | |
81de6962 ZJS |
2454 | r = in_search_path(&lp, *file); |
2455 | if (r < 0) | |
2456 | return install_changes_add(changes, n_changes, r, *file, NULL); | |
2457 | if (r > 0) | |
a6f318a5 | 2458 | /* A silent noop if the file is already in the search path. */ |
0ec0deaa LP |
2459 | continue; |
2460 | ||
a6f318a5 ZJS |
2461 | r = underneath_search_path(&lp, *file); |
2462 | if (r > 0) | |
2463 | r = -ETXTBSY; | |
2464 | if (r < 0) | |
2465 | return install_changes_add(changes, n_changes, r, *file, NULL); | |
2466 | ||
319a4f4b | 2467 | if (!GREEDY_REALLOC0(todo, n_todo + 2)) |
0ec0deaa LP |
2468 | return -ENOMEM; |
2469 | ||
0f87041f | 2470 | todo[n_todo] = strdup(*file); |
8af35ba6 EV |
2471 | if (!todo[n_todo]) |
2472 | return -ENOMEM; | |
2473 | ||
2474 | n_todo++; | |
e94937df LN |
2475 | } |
2476 | ||
0ec0deaa | 2477 | strv_uniq(todo); |
e94937df | 2478 | |
0ec0deaa LP |
2479 | r = 0; |
2480 | STRV_FOREACH(i, todo) { | |
401017e0 | 2481 | _cleanup_free_ char *new_path = NULL; |
0ec0deaa | 2482 | |
401017e0 LP |
2483 | new_path = path_make_absolute(basename(*i), config_path); |
2484 | if (!new_path) | |
0ec0deaa LP |
2485 | return -ENOMEM; |
2486 | ||
d3e85c9c | 2487 | q = create_symlink(&lp, *i, new_path, flags & UNIT_FILE_FORCE, changes, n_changes); |
0ec0deaa LP |
2488 | if (q < 0 && r >= 0) |
2489 | r = q; | |
2d5c93c7 MS |
2490 | } |
2491 | ||
0ec0deaa LP |
2492 | return r; |
2493 | } | |
2494 | ||
c3e7fba0 | 2495 | static int path_shall_revert(const LookupPaths *lp, const char *path) { |
344ca755 LP |
2496 | int r; |
2497 | ||
c3e7fba0 | 2498 | assert(lp); |
344ca755 LP |
2499 | assert(path); |
2500 | ||
2501 | /* Checks whether the path is one where the drop-in directories shall be removed. */ | |
2502 | ||
c3e7fba0 | 2503 | r = path_is_config(lp, path, true); |
344ca755 LP |
2504 | if (r != 0) |
2505 | return r; | |
2506 | ||
c3e7fba0 | 2507 | r = path_is_control(lp, path); |
344ca755 LP |
2508 | if (r != 0) |
2509 | return r; | |
2510 | ||
c3e7fba0 | 2511 | return path_is_transient(lp, path); |
344ca755 LP |
2512 | } |
2513 | ||
2514 | int unit_file_revert( | |
4870133b | 2515 | RuntimeScope scope, |
344ca755 | 2516 | const char *root_dir, |
0f87041f | 2517 | char **names, |
cd44ec5a | 2518 | InstallChange **changes, |
da6053d0 | 2519 | size_t *n_changes) { |
344ca755 LP |
2520 | |
2521 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
c3e7fba0 | 2522 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
344ca755 | 2523 | _cleanup_strv_free_ char **todo = NULL; |
319a4f4b | 2524 | size_t n_todo = 0; |
344ca755 LP |
2525 | int r, q; |
2526 | ||
2527 | /* Puts a unit file back into vendor state. This means: | |
2528 | * | |
0f87041f ZJS |
2529 | * a) we remove all drop-in snippets added by the user ("config"), add to transient units |
2530 | * ("transient"), and added via "systemctl set-property" ("control"), but not if the drop-in is | |
2531 | * generated ("generated"). | |
344ca755 | 2532 | * |
0f87041f ZJS |
2533 | * c) if there's a vendor unit file (i.e. one in /usr) we remove any configured overriding unit files |
2534 | * (i.e. in "config", but not in "transient" or "control" or even "generated"). | |
344ca755 | 2535 | * |
4f25723c | 2536 | * We remove all that in both the runtime and the persistent directories, if that applies. |
344ca755 LP |
2537 | */ |
2538 | ||
c3e7fba0 | 2539 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
344ca755 LP |
2540 | if (r < 0) |
2541 | return r; | |
2542 | ||
0f87041f | 2543 | STRV_FOREACH(name, names) { |
344ca755 | 2544 | bool has_vendor = false; |
344ca755 | 2545 | |
0f87041f | 2546 | if (!unit_name_is_valid(*name, UNIT_NAME_ANY)) |
344ca755 LP |
2547 | return -EINVAL; |
2548 | ||
c3e7fba0 | 2549 | STRV_FOREACH(p, lp.search_path) { |
344ca755 LP |
2550 | _cleanup_free_ char *path = NULL, *dropin = NULL; |
2551 | struct stat st; | |
2552 | ||
0f87041f | 2553 | path = path_make_absolute(*name, *p); |
344ca755 LP |
2554 | if (!path) |
2555 | return -ENOMEM; | |
2556 | ||
81de6962 | 2557 | r = RET_NERRNO(lstat(path, &st)); |
344ca755 | 2558 | if (r < 0) { |
81de6962 ZJS |
2559 | if (r != -ENOENT) |
2560 | return install_changes_add(changes, n_changes, r, path, NULL); | |
344ca755 LP |
2561 | } else if (S_ISREG(st.st_mode)) { |
2562 | /* Check if there's a vendor version */ | |
c3e7fba0 | 2563 | r = path_is_vendor_or_generator(&lp, path); |
344ca755 | 2564 | if (r < 0) |
81de6962 | 2565 | return install_changes_add(changes, n_changes, r, path, NULL); |
344ca755 LP |
2566 | if (r > 0) |
2567 | has_vendor = true; | |
2568 | } | |
2569 | ||
b910cc72 | 2570 | dropin = strjoin(path, ".d"); |
344ca755 LP |
2571 | if (!dropin) |
2572 | return -ENOMEM; | |
2573 | ||
81de6962 | 2574 | r = RET_NERRNO(lstat(dropin, &st)); |
344ca755 | 2575 | if (r < 0) { |
81de6962 ZJS |
2576 | if (r != -ENOENT) |
2577 | return install_changes_add(changes, n_changes, r, dropin, NULL); | |
344ca755 LP |
2578 | } else if (S_ISDIR(st.st_mode)) { |
2579 | /* Remove the drop-ins */ | |
c3e7fba0 | 2580 | r = path_shall_revert(&lp, dropin); |
344ca755 | 2581 | if (r < 0) |
81de6962 | 2582 | return install_changes_add(changes, n_changes, r, dropin, NULL); |
344ca755 | 2583 | if (r > 0) { |
319a4f4b | 2584 | if (!GREEDY_REALLOC0(todo, n_todo + 2)) |
344ca755 LP |
2585 | return -ENOMEM; |
2586 | ||
1cc6c93a | 2587 | todo[n_todo++] = TAKE_PTR(dropin); |
344ca755 LP |
2588 | } |
2589 | } | |
2590 | } | |
2591 | ||
2592 | if (!has_vendor) | |
2593 | continue; | |
2594 | ||
2595 | /* OK, there's a vendor version, hence drop all configuration versions */ | |
c3e7fba0 | 2596 | STRV_FOREACH(p, lp.search_path) { |
344ca755 LP |
2597 | _cleanup_free_ char *path = NULL; |
2598 | struct stat st; | |
2599 | ||
0f87041f | 2600 | path = path_make_absolute(*name, *p); |
344ca755 LP |
2601 | if (!path) |
2602 | return -ENOMEM; | |
2603 | ||
81de6962 | 2604 | r = RET_NERRNO(lstat(path, &st)); |
344ca755 | 2605 | if (r < 0) { |
81de6962 ZJS |
2606 | if (r != -ENOENT) |
2607 | return install_changes_add(changes, n_changes, r, path, NULL); | |
344ca755 | 2608 | } else if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) { |
c3e7fba0 | 2609 | r = path_is_config(&lp, path, true); |
344ca755 | 2610 | if (r < 0) |
81de6962 | 2611 | return install_changes_add(changes, n_changes, r, path, NULL); |
344ca755 | 2612 | if (r > 0) { |
319a4f4b | 2613 | if (!GREEDY_REALLOC0(todo, n_todo + 2)) |
344ca755 LP |
2614 | return -ENOMEM; |
2615 | ||
1cc6c93a | 2616 | todo[n_todo++] = TAKE_PTR(path); |
344ca755 LP |
2617 | } |
2618 | } | |
2619 | } | |
2620 | } | |
2621 | ||
2622 | strv_uniq(todo); | |
2623 | ||
2624 | r = 0; | |
2625 | STRV_FOREACH(i, todo) { | |
2626 | _cleanup_strv_free_ char **fs = NULL; | |
2627 | const char *rp; | |
344ca755 LP |
2628 | |
2629 | (void) get_files_in_directory(*i, &fs); | |
2630 | ||
2631 | q = rm_rf(*i, REMOVE_ROOT|REMOVE_PHYSICAL); | |
2632 | if (q < 0 && q != -ENOENT && r >= 0) { | |
2633 | r = q; | |
2634 | continue; | |
2635 | } | |
2636 | ||
2637 | STRV_FOREACH(j, fs) { | |
2638 | _cleanup_free_ char *t = NULL; | |
2639 | ||
657ee2d8 | 2640 | t = path_join(*i, *j); |
344ca755 LP |
2641 | if (!t) |
2642 | return -ENOMEM; | |
2643 | ||
f31f10a6 ZJS |
2644 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_UNLINK, t, NULL); |
2645 | if (q < 0) | |
2646 | return q; | |
344ca755 LP |
2647 | } |
2648 | ||
f31f10a6 ZJS |
2649 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_UNLINK, *i, NULL); |
2650 | if (q < 0) | |
2651 | return q; | |
344ca755 | 2652 | |
c3e7fba0 | 2653 | rp = skip_root(lp.root_dir, *i); |
344ca755 LP |
2654 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: *i); |
2655 | if (q < 0) | |
2656 | return q; | |
2657 | } | |
2658 | ||
c3e7fba0 | 2659 | q = remove_marked_symlinks(remove_symlinks_to, lp.runtime_config, &lp, false, changes, n_changes); |
344ca755 LP |
2660 | if (r >= 0) |
2661 | r = q; | |
2662 | ||
c3e7fba0 | 2663 | q = remove_marked_symlinks(remove_symlinks_to, lp.persistent_config, &lp, false, changes, n_changes); |
344ca755 LP |
2664 | if (r >= 0) |
2665 | r = q; | |
2666 | ||
2667 | return r; | |
2668 | } | |
2669 | ||
0ec0deaa | 2670 | int unit_file_add_dependency( |
4870133b | 2671 | RuntimeScope scope, |
9b69770a | 2672 | UnitFileFlags file_flags, |
0ec0deaa | 2673 | const char *root_dir, |
0f87041f | 2674 | char **names, |
0ec0deaa LP |
2675 | const char *target, |
2676 | UnitDependency dep, | |
cd44ec5a | 2677 | InstallChange **changes, |
da6053d0 | 2678 | size_t *n_changes) { |
0ec0deaa | 2679 | |
c3e7fba0 | 2680 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
4a84db4c | 2681 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
0047d54d | 2682 | InstallInfo *info, *target_info; |
e1c5c2b0 | 2683 | const char *config_path; |
0ec0deaa LP |
2684 | int r; |
2685 | ||
2686 | assert(scope >= 0); | |
4870133b | 2687 | assert(scope < _RUNTIME_SCOPE_MAX); |
0ec0deaa | 2688 | assert(target); |
81de6962 | 2689 | assert(IN_SET(dep, UNIT_WANTS, UNIT_REQUIRES)); |
0ec0deaa LP |
2690 | |
2691 | if (!unit_name_is_valid(target, UNIT_NAME_ANY)) | |
81de6962 | 2692 | return install_changes_add(changes, n_changes, -EUCLEAN, target, NULL); |
0ec0deaa | 2693 | |
c3e7fba0 | 2694 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
0ec0deaa LP |
2695 | if (r < 0) |
2696 | return r; | |
2697 | ||
c3e7fba0 | 2698 | config_path = (file_flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
d0fd66a3 LP |
2699 | if (!config_path) |
2700 | return -ENXIO; | |
0ec0deaa | 2701 | |
4a84db4c | 2702 | r = install_info_discover_and_check(&ctx, &lp, target, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
1e475a0a | 2703 | &target_info, changes, n_changes); |
76adb5b8 LP |
2704 | if (r < 0) |
2705 | return r; | |
0ec0deaa | 2706 | |
91810c8f | 2707 | assert(target_info->install_mode == INSTALL_MODE_REGULAR); |
e94937df | 2708 | |
0f87041f | 2709 | STRV_FOREACH(name, names) { |
0ec0deaa LP |
2710 | char ***l; |
2711 | ||
0f87041f ZJS |
2712 | r = install_info_discover_and_check(&ctx, &lp, *name, |
2713 | SEARCH_FOLLOW_CONFIG_SYMLINKS, | |
4a84db4c | 2714 | &info, changes, n_changes); |
76adb5b8 LP |
2715 | if (r < 0) |
2716 | return r; | |
0ec0deaa | 2717 | |
91810c8f | 2718 | assert(info->install_mode == INSTALL_MODE_REGULAR); |
0ec0deaa LP |
2719 | |
2720 | /* We didn't actually load anything from the unit | |
2721 | * file, but instead just add in our new symlink to | |
2722 | * create. */ | |
e94937df LN |
2723 | |
2724 | if (dep == UNIT_WANTS) | |
4a84db4c | 2725 | l = &info->wanted_by; |
38f90179 | 2726 | else if (dep == UNIT_REQUIRES) |
4a84db4c | 2727 | l = &info->required_by; |
38f90179 MY |
2728 | else |
2729 | l = &info->upheld_by; | |
e94937df | 2730 | |
0ec0deaa | 2731 | strv_free(*l); |
bea1a013 | 2732 | *l = strv_new(target_info->name); |
0ec0deaa LP |
2733 | if (!*l) |
2734 | return -ENOMEM; | |
e94937df LN |
2735 | } |
2736 | ||
4a84db4c | 2737 | return install_context_apply(&ctx, &lp, file_flags, config_path, |
9b69770a | 2738 | SEARCH_FOLLOW_CONFIG_SYMLINKS, changes, n_changes); |
e94937df LN |
2739 | } |
2740 | ||
ec7eaff3 ZJS |
2741 | static int do_unit_file_enable( |
2742 | const LookupPaths *lp, | |
4870133b | 2743 | RuntimeScope scope, |
ec7eaff3 ZJS |
2744 | UnitFileFlags flags, |
2745 | const char *config_path, | |
0f87041f | 2746 | char **names_or_paths, |
cd44ec5a | 2747 | InstallChange **changes, |
da6053d0 | 2748 | size_t *n_changes) { |
83096483 | 2749 | |
4a84db4c | 2750 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
0047d54d | 2751 | InstallInfo *info; |
83096483 LP |
2752 | int r; |
2753 | ||
0f87041f ZJS |
2754 | STRV_FOREACH(name, names_or_paths) { |
2755 | r = install_info_discover_and_check(&ctx, lp, *name, | |
2756 | SEARCH_LOAD | SEARCH_FOLLOW_CONFIG_SYMLINKS, | |
4a84db4c | 2757 | &info, changes, n_changes); |
76adb5b8 LP |
2758 | if (r < 0) |
2759 | return r; | |
0ec0deaa | 2760 | |
91810c8f | 2761 | assert(info->install_mode == INSTALL_MODE_REGULAR); |
83096483 LP |
2762 | } |
2763 | ||
729e3769 | 2764 | /* This will return the number of symlink rules that were |
d25e100b | 2765 | supposed to be created, not the ones actually created. This |
0f87041f | 2766 | is useful to determine whether the passed units had any |
d25e100b | 2767 | installation data at all. */ |
b91a3b02 | 2768 | |
ec7eaff3 | 2769 | return install_context_apply(&ctx, lp, flags, config_path, |
4a84db4c | 2770 | SEARCH_LOAD, changes, n_changes); |
83096483 LP |
2771 | } |
2772 | ||
ec7eaff3 | 2773 | int unit_file_enable( |
4870133b | 2774 | RuntimeScope scope, |
b3796dd8 | 2775 | UnitFileFlags flags, |
83096483 | 2776 | const char *root_dir, |
0f87041f | 2777 | char **names_or_paths, |
cd44ec5a | 2778 | InstallChange **changes, |
da6053d0 | 2779 | size_t *n_changes) { |
83096483 | 2780 | |
c3e7fba0 | 2781 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
0ec0deaa | 2782 | int r; |
83096483 LP |
2783 | |
2784 | assert(scope >= 0); | |
4870133b | 2785 | assert(scope < _RUNTIME_SCOPE_MAX); |
83096483 | 2786 | |
c3e7fba0 | 2787 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
83096483 LP |
2788 | if (r < 0) |
2789 | return r; | |
2790 | ||
ec7eaff3 | 2791 | const char *config_path = config_path_from_flags(&lp, flags); |
1830ac51 MB |
2792 | if (!config_path) |
2793 | return -ENXIO; | |
2794 | ||
0f87041f | 2795 | return do_unit_file_enable(&lp, scope, flags, config_path, names_or_paths, changes, n_changes); |
ec7eaff3 ZJS |
2796 | } |
2797 | ||
2798 | static int do_unit_file_disable( | |
2799 | const LookupPaths *lp, | |
4870133b | 2800 | RuntimeScope scope, |
ec7eaff3 ZJS |
2801 | UnitFileFlags flags, |
2802 | const char *config_path, | |
0f87041f | 2803 | char **names, |
cd44ec5a | 2804 | InstallChange **changes, |
ec7eaff3 ZJS |
2805 | size_t *n_changes) { |
2806 | ||
2807 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; | |
2808 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
bf1bea43 MY |
2809 | InstallInfo *info; |
2810 | bool has_install_info = false; | |
ec7eaff3 ZJS |
2811 | int r; |
2812 | ||
0f87041f ZJS |
2813 | STRV_FOREACH(name, names) { |
2814 | if (!unit_name_is_valid(*name, UNIT_NAME_ANY)) | |
81de6962 | 2815 | return install_changes_add(changes, n_changes, -EUCLEAN, *name, NULL); |
0ec0deaa | 2816 | |
bf1bea43 MY |
2817 | r = install_info_add(&ctx, *name, NULL, lp->root_dir, /* auxiliary= */ false, &info); |
2818 | if (r >= 0) | |
2819 | r = install_info_traverse(&ctx, lp, info, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, NULL); | |
2820 | ||
83096483 | 2821 | if (r < 0) |
bf1bea43 MY |
2822 | return install_changes_add(changes, n_changes, r, *name, NULL); |
2823 | ||
2824 | /* If we enable multiple units, some with install info and others without, | |
2825 | * the "empty [Install] section" warning is not shown. Let's make the behavior | |
2826 | * of disable align with that. */ | |
2827 | has_install_info = has_install_info || install_info_has_rules(info) || install_info_has_also(info); | |
83096483 LP |
2828 | } |
2829 | ||
ec7eaff3 | 2830 | r = install_context_mark_for_removal(&ctx, lp, &remove_symlinks_to, config_path, changes, n_changes); |
bf1bea43 MY |
2831 | if (r >= 0) |
2832 | r = remove_marked_symlinks(remove_symlinks_to, config_path, lp, flags & UNIT_FILE_DRY_RUN, changes, n_changes); | |
2833 | ||
0ec0deaa LP |
2834 | if (r < 0) |
2835 | return r; | |
83096483 | 2836 | |
bf1bea43 MY |
2837 | /* The warning is shown only if it's a no-op */ |
2838 | return install_changes_have_modification(*changes, *n_changes) || has_install_info; | |
83096483 LP |
2839 | } |
2840 | ||
ec7eaff3 | 2841 | int unit_file_disable( |
4870133b | 2842 | RuntimeScope scope, |
b3796dd8 | 2843 | UnitFileFlags flags, |
83096483 | 2844 | const char *root_dir, |
7195aa42 | 2845 | char **files, |
cd44ec5a | 2846 | InstallChange **changes, |
da6053d0 | 2847 | size_t *n_changes) { |
0ec0deaa | 2848 | |
ec7eaff3 | 2849 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
92d430a9 | 2850 | int r; |
ec7eaff3 ZJS |
2851 | |
2852 | assert(scope >= 0); | |
4870133b | 2853 | assert(scope < _RUNTIME_SCOPE_MAX); |
ec7eaff3 ZJS |
2854 | |
2855 | r = lookup_paths_init(&lp, scope, 0, root_dir); | |
2856 | if (r < 0) | |
2857 | return r; | |
2858 | ||
2859 | const char *config_path = config_path_from_flags(&lp, flags); | |
2860 | if (!config_path) | |
2861 | return -ENXIO; | |
2862 | ||
2863 | return do_unit_file_disable(&lp, scope, flags, config_path, files, changes, n_changes); | |
2864 | } | |
2865 | ||
29a7c59a | 2866 | static int normalize_linked_files( |
4870133b | 2867 | RuntimeScope scope, |
29a7c59a ZJS |
2868 | const LookupPaths *lp, |
2869 | char **names_or_paths, | |
2870 | char ***ret_names, | |
2871 | char ***ret_files) { | |
2872 | ||
2873 | /* This is similar to normalize_filenames()/normalize_names() in src/systemctl/, | |
30fd9a2d | 2874 | * but operates on real unit names. For each argument we look up the actual path |
8b7378e1 | 2875 | * where the unit is found. This way linked units can be re-enabled successfully. */ |
29a7c59a | 2876 | |
0b6bf4b6 | 2877 | _cleanup_strv_free_ char **files = NULL, **names = NULL; |
29a7c59a ZJS |
2878 | int r; |
2879 | ||
2880 | STRV_FOREACH(a, names_or_paths) { | |
2881 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; | |
0047d54d | 2882 | InstallInfo *i = NULL; |
29a7c59a ZJS |
2883 | _cleanup_free_ char *n = NULL; |
2884 | ||
2885 | r = path_extract_filename(*a, &n); | |
2886 | if (r < 0) | |
2887 | return r; | |
2888 | if (r == O_DIRECTORY) | |
2889 | return log_debug_errno(SYNTHETIC_ERRNO(EISDIR), | |
2890 | "Unexpected path to a directory \"%s\", refusing.", *a); | |
2891 | ||
fe6e0cfa | 2892 | if (!is_path(*a) && !unit_name_is_valid(*a, UNIT_NAME_INSTANCE)) { |
29a7c59a ZJS |
2893 | r = install_info_discover(&ctx, lp, n, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, &i, NULL, NULL); |
2894 | if (r < 0) | |
2895 | log_debug_errno(r, "Failed to discover unit \"%s\", operating on name: %m", n); | |
2896 | } | |
2897 | ||
2898 | r = strv_consume(&names, TAKE_PTR(n)); | |
2899 | if (r < 0) | |
2900 | return r; | |
2901 | ||
2902 | const char *p = NULL; | |
6e961aeb | 2903 | if (i && i->path && i->root) |
29a7c59a ZJS |
2904 | /* Use startswith here, because we know that paths are normalized, and |
2905 | * path_startswith() would give us a relative path, but we need an absolute path | |
2906 | * relative to i->root. | |
2907 | * | |
2908 | * In other words: /var/tmp/instroot.1234/etc/systemd/system/frobnicator.service | |
2909 | * is replaced by /etc/systemd/system/frobnicator.service, which is "absolute" | |
2910 | * in a sense, but only makes sense "relative" to /var/tmp/instroot.1234/. | |
2911 | */ | |
2912 | p = startswith(i->path, i->root); | |
2913 | ||
2914 | r = strv_extend(&files, p ?: *a); | |
2915 | if (r < 0) | |
2916 | return r; | |
2917 | } | |
2918 | ||
2919 | *ret_names = TAKE_PTR(names); | |
2920 | *ret_files = TAKE_PTR(files); | |
2921 | return 0; | |
2922 | } | |
2923 | ||
ec7eaff3 | 2924 | int unit_file_reenable( |
4870133b | 2925 | RuntimeScope scope, |
ec7eaff3 ZJS |
2926 | UnitFileFlags flags, |
2927 | const char *root_dir, | |
29a7c59a | 2928 | char **names_or_paths, |
cd44ec5a | 2929 | InstallChange **changes, |
ec7eaff3 ZJS |
2930 | size_t *n_changes) { |
2931 | ||
2932 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; | |
29a7c59a | 2933 | _cleanup_strv_free_ char **names = NULL, **files = NULL; |
ec7eaff3 ZJS |
2934 | int r; |
2935 | ||
2936 | assert(scope >= 0); | |
4870133b | 2937 | assert(scope < _RUNTIME_SCOPE_MAX); |
ec7eaff3 ZJS |
2938 | |
2939 | r = lookup_paths_init(&lp, scope, 0, root_dir); | |
2940 | if (r < 0) | |
2941 | return r; | |
2942 | ||
2943 | const char *config_path = config_path_from_flags(&lp, flags); | |
2944 | if (!config_path) | |
2945 | return -ENXIO; | |
83096483 | 2946 | |
29a7c59a ZJS |
2947 | r = normalize_linked_files(scope, &lp, names_or_paths, &names, &files); |
2948 | if (r < 0) | |
2949 | return r; | |
0ec0deaa | 2950 | |
29a7c59a | 2951 | /* First, we invoke the disable command with only the basename... */ |
ec7eaff3 | 2952 | r = do_unit_file_disable(&lp, scope, flags, config_path, names, changes, n_changes); |
83096483 | 2953 | if (r < 0) |
d9e5e694 | 2954 | return r; |
83096483 | 2955 | |
0ec0deaa | 2956 | /* But the enable command with the full name */ |
ec7eaff3 | 2957 | return do_unit_file_enable(&lp, scope, flags, config_path, files, changes, n_changes); |
83096483 LP |
2958 | } |
2959 | ||
99504dd4 | 2960 | int unit_file_set_default( |
4870133b | 2961 | RuntimeScope scope, |
b3796dd8 | 2962 | UnitFileFlags flags, |
99504dd4 | 2963 | const char *root_dir, |
0ec0deaa | 2964 | const char *name, |
cd44ec5a | 2965 | InstallChange **changes, |
da6053d0 | 2966 | size_t *n_changes) { |
99504dd4 | 2967 | |
c3e7fba0 | 2968 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
4a84db4c | 2969 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
0047d54d | 2970 | InstallInfo *info; |
60bec8e4 | 2971 | const char *new_path; |
99504dd4 | 2972 | int r; |
99504dd4 VP |
2973 | |
2974 | assert(scope >= 0); | |
4870133b | 2975 | assert(scope < _RUNTIME_SCOPE_MAX); |
0ec0deaa | 2976 | assert(name); |
99504dd4 | 2977 | |
401017e0 | 2978 | if (unit_name_to_type(name) != UNIT_TARGET) /* this also validates the name */ |
0ec0deaa LP |
2979 | return -EINVAL; |
2980 | if (streq(name, SPECIAL_DEFAULT_TARGET)) | |
99504dd4 VP |
2981 | return -EINVAL; |
2982 | ||
c3e7fba0 | 2983 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
99504dd4 VP |
2984 | if (r < 0) |
2985 | return r; | |
2986 | ||
4a84db4c | 2987 | r = install_info_discover_and_check(&ctx, &lp, name, 0, &info, changes, n_changes); |
76adb5b8 LP |
2988 | if (r < 0) |
2989 | return r; | |
99504dd4 | 2990 | |
c3e7fba0 | 2991 | new_path = strjoina(lp.persistent_config, "/" SPECIAL_DEFAULT_TARGET); |
9aa3d6b4 | 2992 | return create_symlink(&lp, info->path, new_path, flags & UNIT_FILE_FORCE, changes, n_changes); |
99504dd4 VP |
2993 | } |
2994 | ||
2995 | int unit_file_get_default( | |
4870133b | 2996 | RuntimeScope scope, |
99504dd4 VP |
2997 | const char *root_dir, |
2998 | char **name) { | |
2999 | ||
c3e7fba0 | 3000 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
4a84db4c | 3001 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
0047d54d | 3002 | InstallInfo *info; |
0ec0deaa | 3003 | char *n; |
99504dd4 VP |
3004 | int r; |
3005 | ||
16ed0233 | 3006 | assert(scope >= 0); |
4870133b | 3007 | assert(scope < _RUNTIME_SCOPE_MAX); |
16ed0233 LP |
3008 | assert(name); |
3009 | ||
c3e7fba0 | 3010 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
0ec0deaa LP |
3011 | if (r < 0) |
3012 | return r; | |
99504dd4 | 3013 | |
4a84db4c ZJS |
3014 | r = install_info_discover(&ctx, &lp, SPECIAL_DEFAULT_TARGET, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3015 | &info, NULL, NULL); | |
0ec0deaa LP |
3016 | if (r < 0) |
3017 | return r; | |
99504dd4 | 3018 | |
4a84db4c | 3019 | n = strdup(info->name); |
0ec0deaa LP |
3020 | if (!n) |
3021 | return -ENOMEM; | |
99504dd4 | 3022 | |
0ec0deaa LP |
3023 | *name = n; |
3024 | return 0; | |
99504dd4 VP |
3025 | } |
3026 | ||
d6d98276 | 3027 | int unit_file_lookup_state( |
4870133b | 3028 | RuntimeScope scope, |
c3e7fba0 | 3029 | const LookupPaths *lp, |
0ec0deaa LP |
3030 | const char *name, |
3031 | UnitFileState *ret) { | |
83096483 | 3032 | |
4a84db4c | 3033 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
0047d54d | 3034 | InstallInfo *info; |
0ec0deaa LP |
3035 | UnitFileState state; |
3036 | int r; | |
83096483 | 3037 | |
c3e7fba0 | 3038 | assert(lp); |
0ec0deaa | 3039 | assert(name); |
83096483 | 3040 | |
7410616c | 3041 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
83096483 LP |
3042 | return -EINVAL; |
3043 | ||
4a84db4c ZJS |
3044 | r = install_info_discover(&ctx, lp, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3045 | &info, NULL, NULL); | |
0ec0deaa | 3046 | if (r < 0) |
3e8d06d9 ZJS |
3047 | return log_debug_errno(r, "Failed to discover unit %s: %m", name); |
3048 | ||
91810c8f | 3049 | assert(IN_SET(info->install_mode, INSTALL_MODE_REGULAR, INSTALL_MODE_MASKED)); |
4a84db4c | 3050 | log_debug("Found unit %s at %s (%s)", name, strna(info->path), |
91810c8f | 3051 | info->install_mode == INSTALL_MODE_REGULAR ? "regular file" : "mask"); |
83096483 | 3052 | |
0ec0deaa LP |
3053 | /* Shortcut things, if the caller just wants to know if this unit exists. */ |
3054 | if (!ret) | |
3055 | return 0; | |
83096483 | 3056 | |
91810c8f | 3057 | switch (info->install_mode) { |
67820a0c | 3058 | |
318031fd | 3059 | case INSTALL_MODE_MASKED: |
4a84db4c | 3060 | r = path_is_runtime(lp, info->path, true); |
385eb996 LP |
3061 | if (r < 0) |
3062 | return r; | |
3063 | ||
3064 | state = r > 0 ? UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED; | |
0ec0deaa | 3065 | break; |
83096483 | 3066 | |
318031fd | 3067 | case INSTALL_MODE_REGULAR: |
15d7ab87 | 3068 | /* Check if the name we were querying is actually an alias */ |
4a84db4c | 3069 | if (!streq(name, basename(info->path)) && !unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { |
15d7ab87 ZJS |
3070 | state = UNIT_FILE_ALIAS; |
3071 | break; | |
3072 | } | |
3073 | ||
4a84db4c | 3074 | r = path_is_generator(lp, info->path); |
f4139308 LP |
3075 | if (r < 0) |
3076 | return r; | |
3077 | if (r > 0) { | |
3078 | state = UNIT_FILE_GENERATED; | |
3079 | break; | |
3080 | } | |
3081 | ||
4a84db4c | 3082 | r = path_is_transient(lp, info->path); |
e4fca67f LP |
3083 | if (r < 0) |
3084 | return r; | |
3085 | if (r > 0) { | |
3086 | state = UNIT_FILE_TRANSIENT; | |
3087 | break; | |
3088 | } | |
3089 | ||
5cd8ae31 ZJS |
3090 | /* Check if any of the Alias= symlinks have been created. |
3091 | * We ignore other aliases, and only check those that would | |
3092 | * be created by systemctl enable for this unit. */ | |
4a84db4c | 3093 | r = find_symlinks_in_scope(scope, lp, info, true, &state); |
d9b4b48f ZJS |
3094 | if (r < 0) |
3095 | return r; | |
3096 | if (r > 0) | |
3097 | break; | |
3098 | ||
3099 | /* Check if the file is known under other names. If it is, | |
3100 | * it might be in use. Report that as UNIT_FILE_INDIRECT. */ | |
4a84db4c | 3101 | r = find_symlinks_in_scope(scope, lp, info, false, &state); |
d9e5e694 ZJS |
3102 | if (r < 0) |
3103 | return r; | |
d9b4b48f ZJS |
3104 | if (r > 0) |
3105 | state = UNIT_FILE_INDIRECT; | |
3106 | else { | |
0047d54d | 3107 | if (install_info_has_rules(info)) |
0ec0deaa | 3108 | state = UNIT_FILE_DISABLED; |
0047d54d | 3109 | else if (install_info_has_also(info)) |
0ec0deaa LP |
3110 | state = UNIT_FILE_INDIRECT; |
3111 | else | |
3112 | state = UNIT_FILE_STATIC; | |
3113 | } | |
83096483 | 3114 | |
0ec0deaa LP |
3115 | break; |
3116 | ||
3117 | default: | |
04499a70 | 3118 | assert_not_reached(); |
83096483 LP |
3119 | } |
3120 | ||
0ec0deaa LP |
3121 | *ret = state; |
3122 | return 0; | |
83096483 LP |
3123 | } |
3124 | ||
0ec0deaa | 3125 | int unit_file_get_state( |
4870133b | 3126 | RuntimeScope scope, |
a8ffe6fb | 3127 | const char *root_dir, |
0ec0deaa LP |
3128 | const char *name, |
3129 | UnitFileState *ret) { | |
a8ffe6fb | 3130 | |
c3e7fba0 | 3131 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
a8ffe6fb ZJS |
3132 | int r; |
3133 | ||
3134 | assert(scope >= 0); | |
4870133b | 3135 | assert(scope < _RUNTIME_SCOPE_MAX); |
a8ffe6fb ZJS |
3136 | assert(name); |
3137 | ||
c3e7fba0 | 3138 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
a8ffe6fb ZJS |
3139 | if (r < 0) |
3140 | return r; | |
3141 | ||
c3e7fba0 | 3142 | return unit_file_lookup_state(scope, &lp, name, ret); |
a8ffe6fb ZJS |
3143 | } |
3144 | ||
4870133b | 3145 | int unit_file_exists(RuntimeScope scope, const LookupPaths *lp, const char *name) { |
4a84db4c | 3146 | _cleanup_(install_context_done) InstallContext c = { .scope = scope }; |
e735decc LP |
3147 | int r; |
3148 | ||
c3e7fba0 | 3149 | assert(lp); |
e735decc LP |
3150 | assert(name); |
3151 | ||
3152 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) | |
3153 | return -EINVAL; | |
3154 | ||
4a84db4c | 3155 | r = install_info_discover(&c, lp, name, 0, NULL, NULL, NULL); |
e735decc LP |
3156 | if (r == -ENOENT) |
3157 | return 0; | |
3158 | if (r < 0) | |
3159 | return r; | |
3160 | ||
3161 | return 1; | |
3162 | } | |
3163 | ||
4c9565ee RB |
3164 | static int split_pattern_into_name_and_instances(const char *pattern, char **out_unit_name, char ***out_instances) { |
3165 | _cleanup_strv_free_ char **instances = NULL; | |
3166 | _cleanup_free_ char *unit_name = NULL; | |
3167 | int r; | |
3168 | ||
3169 | assert(pattern); | |
3170 | assert(out_instances); | |
3171 | assert(out_unit_name); | |
3172 | ||
82bd4da7 | 3173 | r = extract_first_word(&pattern, &unit_name, NULL, EXTRACT_RETAIN_ESCAPE); |
4c9565ee RB |
3174 | if (r < 0) |
3175 | return r; | |
3176 | ||
3177 | /* We handle the instances logic when unit name is extracted */ | |
3178 | if (pattern) { | |
3179 | /* We only create instances when a rule of templated unit | |
3180 | * is seen. A rule like enable foo@.service a b c will | |
3181 | * result in an array of (a, b, c) as instance names */ | |
3182 | if (!unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) | |
3183 | return -EINVAL; | |
3184 | ||
3185 | instances = strv_split(pattern, WHITESPACE); | |
3186 | if (!instances) | |
3187 | return -ENOMEM; | |
3188 | ||
3189 | *out_instances = TAKE_PTR(instances); | |
3190 | } | |
3191 | ||
3192 | *out_unit_name = TAKE_PTR(unit_name); | |
3193 | ||
3194 | return 0; | |
3195 | } | |
3196 | ||
4870133b | 3197 | static int presets_find_config(RuntimeScope scope, const char *root_dir, char ***files) { |
10fd1d46 ZJS |
3198 | static const char* const system_dirs[] = {CONF_PATHS("systemd/system-preset"), NULL}; |
3199 | static const char* const user_dirs[] = {CONF_PATHS_USR("systemd/user-preset"), NULL}; | |
f7767d76 | 3200 | const char* const* dirs; |
83096483 LP |
3201 | |
3202 | assert(scope >= 0); | |
4870133b | 3203 | assert(scope < _RUNTIME_SCOPE_MAX); |
0ec0deaa | 3204 | |
4870133b | 3205 | if (scope == RUNTIME_SCOPE_SYSTEM) |
10fd1d46 | 3206 | dirs = system_dirs; |
4870133b | 3207 | else if (IN_SET(scope, RUNTIME_SCOPE_GLOBAL, RUNTIME_SCOPE_USER)) |
10fd1d46 | 3208 | dirs = user_dirs; |
a05294ff | 3209 | else |
04499a70 | 3210 | assert_not_reached(); |
83096483 | 3211 | |
f7767d76 | 3212 | return conf_files_list_strv(files, ".preset", root_dir, 0, dirs); |
e0b8a238 ZJS |
3213 | } |
3214 | ||
4870133b | 3215 | static int read_presets(RuntimeScope scope, const char *root_dir, UnitFilePresets *presets) { |
05cdf6a7 | 3216 | _cleanup_(unit_file_presets_done) UnitFilePresets ps = {}; |
e0b8a238 | 3217 | _cleanup_strv_free_ char **files = NULL; |
e0b8a238 ZJS |
3218 | int r; |
3219 | ||
3220 | assert(scope >= 0); | |
4870133b | 3221 | assert(scope < _RUNTIME_SCOPE_MAX); |
e0b8a238 ZJS |
3222 | assert(presets); |
3223 | ||
3224 | r = presets_find_config(scope, root_dir, &files); | |
83096483 LP |
3225 | if (r < 0) |
3226 | return r; | |
3227 | ||
cba2ef02 | 3228 | STRV_FOREACH(p, files) { |
c2b2df60 | 3229 | _cleanup_fclose_ FILE *f = NULL; |
d544d1a4 | 3230 | int n = 0; |
83096483 | 3231 | |
cba2ef02 | 3232 | f = fopen(*p, "re"); |
83096483 LP |
3233 | if (!f) { |
3234 | if (errno == ENOENT) | |
3235 | continue; | |
3236 | ||
d9e5e694 | 3237 | return -errno; |
83096483 LP |
3238 | } |
3239 | ||
bef77f37 LP |
3240 | for (;;) { |
3241 | _cleanup_free_ char *line = NULL; | |
52c788e6 | 3242 | _cleanup_(unit_file_preset_rule_done) UnitFilePresetRule rule = {}; |
0ec0deaa | 3243 | const char *parameter; |
83096483 | 3244 | |
0ff6ff2b | 3245 | r = read_stripped_line(f, LONG_LINE_MAX, &line); |
bef77f37 LP |
3246 | if (r < 0) |
3247 | return r; | |
3248 | if (r == 0) | |
3249 | break; | |
3250 | ||
d544d1a4 | 3251 | n++; |
83096483 | 3252 | |
0ff6ff2b | 3253 | if (isempty(line)) |
0ec0deaa | 3254 | continue; |
0ff6ff2b | 3255 | if (strchr(COMMENTS, line[0])) |
83096483 LP |
3256 | continue; |
3257 | ||
0ff6ff2b | 3258 | parameter = first_word(line, "enable"); |
0ec0deaa | 3259 | if (parameter) { |
4c9565ee RB |
3260 | char *unit_name; |
3261 | char **instances = NULL; | |
d9e5e694 | 3262 | |
4c9565ee RB |
3263 | /* Unit_name will remain the same as parameter when no instances are specified */ |
3264 | r = split_pattern_into_name_and_instances(parameter, &unit_name, &instances); | |
3265 | if (r < 0) { | |
8ac3c9ab | 3266 | log_syntax(NULL, LOG_WARNING, *p, n, r, "Couldn't parse line '%s'. Ignoring.", line); |
4c9565ee RB |
3267 | continue; |
3268 | } | |
8965d9f8 | 3269 | |
8f7b2566 | 3270 | rule = (UnitFilePresetRule) { |
4c9565ee | 3271 | .pattern = unit_name, |
8965d9f8 | 3272 | .action = PRESET_ENABLE, |
4c9565ee | 3273 | .instances = instances, |
8965d9f8 | 3274 | }; |
0ec0deaa | 3275 | } |
83096483 | 3276 | |
0ff6ff2b | 3277 | parameter = first_word(line, "disable"); |
0ec0deaa | 3278 | if (parameter) { |
8965d9f8 | 3279 | char *pattern; |
d9e5e694 | 3280 | |
8965d9f8 AC |
3281 | pattern = strdup(parameter); |
3282 | if (!pattern) | |
3283 | return -ENOMEM; | |
3284 | ||
8f7b2566 | 3285 | rule = (UnitFilePresetRule) { |
8965d9f8 AC |
3286 | .pattern = pattern, |
3287 | .action = PRESET_DISABLE, | |
3288 | }; | |
3289 | } | |
3290 | ||
0ff6ff2b | 3291 | parameter = first_word(line, "ignore"); |
e77e07f6 DDM |
3292 | if (parameter) { |
3293 | char *pattern; | |
3294 | ||
3295 | pattern = strdup(parameter); | |
3296 | if (!pattern) | |
3297 | return -ENOMEM; | |
3298 | ||
3299 | rule = (UnitFilePresetRule) { | |
3300 | .pattern = pattern, | |
3301 | .action = PRESET_IGNORE, | |
3302 | }; | |
3303 | } | |
3304 | ||
8965d9f8 | 3305 | if (rule.action) { |
319a4f4b | 3306 | if (!GREEDY_REALLOC(ps.rules, ps.n_rules + 1)) |
8965d9f8 AC |
3307 | return -ENOMEM; |
3308 | ||
52c788e6 | 3309 | ps.rules[ps.n_rules++] = TAKE_STRUCT(rule); |
0ec0deaa LP |
3310 | continue; |
3311 | } | |
3312 | ||
d544d1a4 | 3313 | log_syntax(NULL, LOG_WARNING, *p, n, 0, "Couldn't parse line '%s'. Ignoring.", line); |
83096483 | 3314 | } |
83096483 LP |
3315 | } |
3316 | ||
8f7b2566 | 3317 | ps.initialized = true; |
088d71f8 | 3318 | *presets = TAKE_STRUCT(ps); |
8965d9f8 AC |
3319 | |
3320 | return 0; | |
3321 | } | |
3322 | ||
4c9565ee | 3323 | static int pattern_match_multiple_instances( |
8f7b2566 | 3324 | const UnitFilePresetRule rule, |
4c9565ee RB |
3325 | const char *unit_name, |
3326 | char ***ret) { | |
3327 | ||
3328 | _cleanup_free_ char *templated_name = NULL; | |
3329 | int r; | |
3330 | ||
3331 | /* If no ret is needed or the rule itself does not have instances | |
5238e957 | 3332 | * initialized, we return not matching */ |
4c9565ee RB |
3333 | if (!ret || !rule.instances) |
3334 | return 0; | |
3335 | ||
3336 | r = unit_name_template(unit_name, &templated_name); | |
3337 | if (r < 0) | |
3338 | return r; | |
3339 | if (!streq(rule.pattern, templated_name)) | |
3340 | return 0; | |
3341 | ||
3342 | /* Compose a list of specified instances when unit name is a template */ | |
3343 | if (unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) { | |
4c9565ee | 3344 | _cleanup_strv_free_ char **out_strv = NULL; |
4c9565ee RB |
3345 | |
3346 | STRV_FOREACH(iter, rule.instances) { | |
3347 | _cleanup_free_ char *name = NULL; | |
47ab95fe ZJS |
3348 | |
3349 | r = unit_name_replace_instance(unit_name, *iter, &name); | |
4c9565ee RB |
3350 | if (r < 0) |
3351 | return r; | |
47ab95fe ZJS |
3352 | |
3353 | r = strv_consume(&out_strv, TAKE_PTR(name)); | |
4c9565ee RB |
3354 | if (r < 0) |
3355 | return r; | |
3356 | } | |
3357 | ||
3358 | *ret = TAKE_PTR(out_strv); | |
3359 | return 1; | |
3360 | } else { | |
3361 | /* We now know the input unit name is an instance name */ | |
3362 | _cleanup_free_ char *instance_name = NULL; | |
3363 | ||
3364 | r = unit_name_to_instance(unit_name, &instance_name); | |
3365 | if (r < 0) | |
3366 | return r; | |
3367 | ||
3368 | if (strv_find(rule.instances, instance_name)) | |
3369 | return 1; | |
3370 | } | |
3371 | return 0; | |
3372 | } | |
3373 | ||
8f7b2566 | 3374 | static int query_presets(const char *name, const UnitFilePresets *presets, char ***instance_name_list) { |
8965d9f8 | 3375 | PresetAction action = PRESET_UNKNOWN; |
de8be28e | 3376 | |
8965d9f8 AC |
3377 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
3378 | return -EINVAL; | |
3379 | ||
de8be28e | 3380 | for (size_t i = 0; i < presets->n_rules; i++) |
8f7b2566 ZJS |
3381 | if (pattern_match_multiple_instances(presets->rules[i], name, instance_name_list) > 0 || |
3382 | fnmatch(presets->rules[i].pattern, name, FNM_NOESCAPE) == 0) { | |
3383 | action = presets->rules[i].action; | |
8965d9f8 AC |
3384 | break; |
3385 | } | |
3386 | ||
3387 | switch (action) { | |
3388 | case PRESET_UNKNOWN: | |
3389 | log_debug("Preset files don't specify rule for %s. Enabling.", name); | |
e77e07f6 | 3390 | return PRESET_ENABLE; |
8965d9f8 | 3391 | case PRESET_ENABLE: |
de010b0b | 3392 | if (instance_name_list && *instance_name_list) |
4c9565ee RB |
3393 | STRV_FOREACH(s, *instance_name_list) |
3394 | log_debug("Preset files say enable %s.", *s); | |
de010b0b | 3395 | else |
4c9565ee | 3396 | log_debug("Preset files say enable %s.", name); |
e77e07f6 | 3397 | return PRESET_ENABLE; |
8965d9f8 AC |
3398 | case PRESET_DISABLE: |
3399 | log_debug("Preset files say disable %s.", name); | |
e77e07f6 DDM |
3400 | return PRESET_DISABLE; |
3401 | case PRESET_IGNORE: | |
3402 | log_debug("Preset files say ignore %s.", name); | |
3403 | return PRESET_IGNORE; | |
8965d9f8 | 3404 | default: |
04499a70 | 3405 | assert_not_reached(); |
8965d9f8 AC |
3406 | } |
3407 | } | |
3408 | ||
e77e07f6 | 3409 | PresetAction unit_file_query_preset(RuntimeScope scope, const char *root_dir, const char *name, UnitFilePresets *cached) { |
05cdf6a7 | 3410 | _cleanup_(unit_file_presets_done) UnitFilePresets tmp = {}; |
8965d9f8 AC |
3411 | int r; |
3412 | ||
8f7b2566 ZJS |
3413 | if (!cached) |
3414 | cached = &tmp; | |
3415 | if (!cached->initialized) { | |
3416 | r = read_presets(scope, root_dir, cached); | |
3417 | if (r < 0) | |
3418 | return r; | |
3419 | } | |
8965d9f8 | 3420 | |
8f7b2566 | 3421 | return query_presets(name, cached, NULL); |
83096483 LP |
3422 | } |
3423 | ||
0ec0deaa | 3424 | static int execute_preset( |
9b69770a | 3425 | UnitFileFlags file_flags, |
0ec0deaa LP |
3426 | InstallContext *plus, |
3427 | InstallContext *minus, | |
c3e7fba0 | 3428 | const LookupPaths *lp, |
1830ac51 | 3429 | const char *config_path, |
0ec0deaa LP |
3430 | char **files, |
3431 | UnitFilePresetMode mode, | |
cd44ec5a | 3432 | InstallChange **changes, |
da6053d0 | 3433 | size_t *n_changes) { |
0ec0deaa | 3434 | |
1830ac51 | 3435 | int r; |
0ec0deaa LP |
3436 | |
3437 | assert(plus); | |
3438 | assert(minus); | |
c3e7fba0 | 3439 | assert(lp); |
1830ac51 | 3440 | assert(config_path); |
0ec0deaa LP |
3441 | |
3442 | if (mode != UNIT_FILE_PRESET_ENABLE_ONLY) { | |
3443 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
3444 | ||
4a84db4c | 3445 | r = install_context_mark_for_removal(minus, lp, &remove_symlinks_to, config_path, changes, n_changes); |
1830ac51 MB |
3446 | if (r < 0) |
3447 | return r; | |
0ec0deaa | 3448 | |
c3e7fba0 | 3449 | r = remove_marked_symlinks(remove_symlinks_to, config_path, lp, false, changes, n_changes); |
1830ac51 MB |
3450 | } else |
3451 | r = 0; | |
0ec0deaa LP |
3452 | |
3453 | if (mode != UNIT_FILE_PRESET_DISABLE_ONLY) { | |
1830ac51 MB |
3454 | int q; |
3455 | ||
0ec0deaa | 3456 | /* Returns number of symlinks that where supposed to be installed. */ |
4a84db4c | 3457 | q = install_context_apply(plus, lp, |
ad5fdd39 | 3458 | file_flags | UNIT_FILE_IGNORE_AUXILIARY_FAILURE, |
4a84db4c ZJS |
3459 | config_path, |
3460 | SEARCH_LOAD, changes, n_changes); | |
1830ac51 MB |
3461 | if (r >= 0) { |
3462 | if (q < 0) | |
3463 | r = q; | |
3464 | else | |
3465 | r += q; | |
3466 | } | |
0ec0deaa LP |
3467 | } |
3468 | ||
3469 | return r; | |
3470 | } | |
3471 | ||
3472 | static int preset_prepare_one( | |
4870133b | 3473 | RuntimeScope scope, |
0ec0deaa LP |
3474 | InstallContext *plus, |
3475 | InstallContext *minus, | |
c3e7fba0 | 3476 | LookupPaths *lp, |
af3d8113 | 3477 | const char *name, |
8f7b2566 | 3478 | const UnitFilePresets *presets, |
cd44ec5a | 3479 | InstallChange **changes, |
da6053d0 | 3480 | size_t *n_changes) { |
0ec0deaa | 3481 | |
4a84db4c | 3482 | _cleanup_(install_context_done) InstallContext tmp = { .scope = scope }; |
4c9565ee | 3483 | _cleanup_strv_free_ char **instance_name_list = NULL; |
0047d54d | 3484 | InstallInfo *info; |
0ec0deaa LP |
3485 | int r; |
3486 | ||
11e11fd5 | 3487 | if (install_info_find(plus, name) || install_info_find(minus, name)) |
0ec0deaa LP |
3488 | return 0; |
3489 | ||
4a84db4c ZJS |
3490 | r = install_info_discover(&tmp, lp, name, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3491 | &info, changes, n_changes); | |
11e11fd5 ZJS |
3492 | if (r < 0) |
3493 | return r; | |
4a84db4c ZJS |
3494 | if (!streq(name, info->name)) { |
3495 | log_debug("Skipping %s because it is an alias for %s.", name, info->name); | |
11e11fd5 ZJS |
3496 | return 0; |
3497 | } | |
3498 | ||
4c9565ee | 3499 | r = query_presets(name, presets, &instance_name_list); |
0ec0deaa LP |
3500 | if (r < 0) |
3501 | return r; | |
3502 | ||
e77e07f6 | 3503 | if (r == PRESET_ENABLE) { |
de010b0b | 3504 | if (instance_name_list) |
4c9565ee | 3505 | STRV_FOREACH(s, instance_name_list) { |
4a84db4c ZJS |
3506 | r = install_info_discover_and_check(plus, lp, *s, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3507 | &info, changes, n_changes); | |
4c9565ee RB |
3508 | if (r < 0) |
3509 | return r; | |
3510 | } | |
de010b0b | 3511 | else { |
4a84db4c ZJS |
3512 | r = install_info_discover_and_check(plus, lp, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3513 | &info, changes, n_changes); | |
4c9565ee RB |
3514 | if (r < 0) |
3515 | return r; | |
3516 | } | |
0ec0deaa | 3517 | |
e77e07f6 | 3518 | } else if (r == PRESET_DISABLE) |
4a84db4c ZJS |
3519 | r = install_info_discover(minus, lp, name, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3520 | &info, changes, n_changes); | |
0ec0deaa LP |
3521 | |
3522 | return r; | |
3523 | } | |
3524 | ||
83096483 | 3525 | int unit_file_preset( |
4870133b | 3526 | RuntimeScope scope, |
9b69770a | 3527 | UnitFileFlags file_flags, |
83096483 | 3528 | const char *root_dir, |
0f87041f | 3529 | char **names, |
d309c1c3 | 3530 | UnitFilePresetMode mode, |
cd44ec5a | 3531 | InstallChange **changes, |
da6053d0 | 3532 | size_t *n_changes) { |
83096483 | 3533 | |
59ccf93d | 3534 | _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; |
c3e7fba0 | 3535 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
05cdf6a7 | 3536 | _cleanup_(unit_file_presets_done) UnitFilePresets presets = {}; |
1830ac51 | 3537 | const char *config_path; |
0ec0deaa | 3538 | int r; |
83096483 LP |
3539 | |
3540 | assert(scope >= 0); | |
4870133b | 3541 | assert(scope < _RUNTIME_SCOPE_MAX); |
b364c4de | 3542 | assert(mode < _UNIT_FILE_PRESET_MODE_MAX); |
83096483 | 3543 | |
c3e7fba0 | 3544 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
83096483 LP |
3545 | if (r < 0) |
3546 | return r; | |
3547 | ||
c3e7fba0 | 3548 | config_path = (file_flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
1830ac51 MB |
3549 | if (!config_path) |
3550 | return -ENXIO; | |
3551 | ||
8965d9f8 AC |
3552 | r = read_presets(scope, root_dir, &presets); |
3553 | if (r < 0) | |
3554 | return r; | |
83096483 | 3555 | |
0f87041f ZJS |
3556 | STRV_FOREACH(name, names) { |
3557 | r = preset_prepare_one(scope, &plus, &minus, &lp, *name, &presets, changes, n_changes); | |
83096483 | 3558 | if (r < 0) |
d9e5e694 | 3559 | return r; |
83096483 LP |
3560 | } |
3561 | ||
0f87041f | 3562 | return execute_preset(file_flags, &plus, &minus, &lp, config_path, names, mode, changes, n_changes); |
d309c1c3 LP |
3563 | } |
3564 | ||
3565 | int unit_file_preset_all( | |
4870133b | 3566 | RuntimeScope scope, |
9b69770a | 3567 | UnitFileFlags file_flags, |
d309c1c3 LP |
3568 | const char *root_dir, |
3569 | UnitFilePresetMode mode, | |
cd44ec5a | 3570 | InstallChange **changes, |
da6053d0 | 3571 | size_t *n_changes) { |
d309c1c3 | 3572 | |
59ccf93d | 3573 | _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; |
c3e7fba0 | 3574 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
05cdf6a7 | 3575 | _cleanup_(unit_file_presets_done) UnitFilePresets presets = {}; |
1830ac51 | 3576 | const char *config_path = NULL; |
0ec0deaa | 3577 | int r; |
d309c1c3 LP |
3578 | |
3579 | assert(scope >= 0); | |
4870133b | 3580 | assert(scope < _RUNTIME_SCOPE_MAX); |
b364c4de | 3581 | assert(mode < _UNIT_FILE_PRESET_MODE_MAX); |
d309c1c3 | 3582 | |
c3e7fba0 | 3583 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
d309c1c3 LP |
3584 | if (r < 0) |
3585 | return r; | |
3586 | ||
c3e7fba0 | 3587 | config_path = (file_flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
1830ac51 MB |
3588 | if (!config_path) |
3589 | return -ENXIO; | |
3590 | ||
8965d9f8 AC |
3591 | r = read_presets(scope, root_dir, &presets); |
3592 | if (r < 0) | |
3593 | return r; | |
3594 | ||
c3e7fba0 | 3595 | STRV_FOREACH(i, lp.search_path) { |
d309c1c3 | 3596 | _cleanup_closedir_ DIR *d = NULL; |
d309c1c3 | 3597 | |
401017e0 | 3598 | d = opendir(*i); |
d309c1c3 LP |
3599 | if (!d) { |
3600 | if (errno == ENOENT) | |
3601 | continue; | |
3602 | ||
3603 | return -errno; | |
3604 | } | |
3605 | ||
d25e100b | 3606 | FOREACH_DIRENT(de, d, return -errno) { |
1830ac51 | 3607 | |
7410616c | 3608 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
d309c1c3 LP |
3609 | continue; |
3610 | ||
0ec0deaa | 3611 | if (!IN_SET(de->d_type, DT_LNK, DT_REG)) |
d309c1c3 LP |
3612 | continue; |
3613 | ||
c3e7fba0 | 3614 | r = preset_prepare_one(scope, &plus, &minus, &lp, de->d_name, &presets, changes, n_changes); |
4a203a51 | 3615 | if (r < 0 && |
cbfdbffb | 3616 | !IN_SET(r, -EEXIST, -ERFKILL, -EADDRNOTAVAIL, -EBADSLT, -EIDRM, -EUCLEAN, -ELOOP, -ENOENT, -EUNATCH, -EXDEV)) |
4a203a51 | 3617 | /* Ignore generated/transient/missing/invalid units when applying preset, propagate other errors. |
cd44ec5a | 3618 | * Coordinate with install_changes_dump() above. */ |
d309c1c3 LP |
3619 | return r; |
3620 | } | |
3621 | } | |
3622 | ||
4a84db4c | 3623 | return execute_preset(file_flags, &plus, &minus, &lp, config_path, NULL, mode, changes, n_changes); |
83096483 LP |
3624 | } |
3625 | ||
27681563 | 3626 | static UnitFileList* unit_file_list_free(UnitFileList *f) { |
59ccf93d | 3627 | if (!f) |
75db809a | 3628 | return NULL; |
d9e5e694 | 3629 | |
59ccf93d | 3630 | free(f->path); |
75db809a | 3631 | return mfree(f); |
d9e5e694 | 3632 | } |
59ccf93d | 3633 | |
27681563 | 3634 | DEFINE_TRIVIAL_CLEANUP_FUNC(UnitFileList*, unit_file_list_free); |
d9e5e694 | 3635 | |
c92899fd DT |
3636 | DEFINE_HASH_OPS_WITH_VALUE_DESTRUCTOR( |
3637 | unit_file_list_hash_ops_free, | |
3638 | char, | |
3639 | string_hash_func, | |
3640 | string_compare_func, | |
3641 | UnitFileList, | |
27681563 | 3642 | unit_file_list_free); |
c92899fd | 3643 | |
83096483 | 3644 | int unit_file_get_list( |
4870133b | 3645 | RuntimeScope scope, |
83096483 | 3646 | const char *root_dir, |
313fe66f | 3647 | Hashmap *h, |
3648 | char **states, | |
3649 | char **patterns) { | |
83096483 | 3650 | |
c3e7fba0 | 3651 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
83096483 LP |
3652 | int r; |
3653 | ||
3654 | assert(scope >= 0); | |
4870133b | 3655 | assert(scope < _RUNTIME_SCOPE_MAX); |
83096483 LP |
3656 | assert(h); |
3657 | ||
c3e7fba0 | 3658 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
83096483 LP |
3659 | if (r < 0) |
3660 | return r; | |
3661 | ||
c3e7fba0 | 3662 | STRV_FOREACH(dirname, lp.search_path) { |
da39f6a6 | 3663 | _cleanup_closedir_ DIR *d = NULL; |
83096483 | 3664 | |
9c894b85 | 3665 | d = opendir(*dirname); |
83096483 LP |
3666 | if (!d) { |
3667 | if (errno == ENOENT) | |
3668 | continue; | |
a1feacf7 | 3669 | if (IN_SET(errno, ENOTDIR, EACCES)) { |
9c894b85 | 3670 | log_debug_errno(errno, "Failed to open \"%s\": %m", *dirname); |
a1feacf7 ZJS |
3671 | continue; |
3672 | } | |
83096483 | 3673 | |
d9e5e694 | 3674 | return -errno; |
83096483 LP |
3675 | } |
3676 | ||
d25e100b | 3677 | FOREACH_DIRENT(de, d, return -errno) { |
27681563 | 3678 | _cleanup_(unit_file_list_freep) UnitFileList *f = NULL; |
83096483 | 3679 | |
7410616c | 3680 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
83096483 LP |
3681 | continue; |
3682 | ||
313fe66f | 3683 | if (!strv_fnmatch_or_empty(patterns, de->d_name, FNM_NOESCAPE)) |
3684 | continue; | |
3685 | ||
83096483 LP |
3686 | if (hashmap_get(h, de->d_name)) |
3687 | continue; | |
3688 | ||
da39f6a6 | 3689 | if (!IN_SET(de->d_type, DT_LNK, DT_REG)) |
83096483 LP |
3690 | continue; |
3691 | ||
3692 | f = new0(UnitFileList, 1); | |
d9e5e694 ZJS |
3693 | if (!f) |
3694 | return -ENOMEM; | |
83096483 | 3695 | |
9c894b85 | 3696 | f->path = path_make_absolute(de->d_name, *dirname); |
d9e5e694 ZJS |
3697 | if (!f->path) |
3698 | return -ENOMEM; | |
83096483 | 3699 | |
c3e7fba0 | 3700 | r = unit_file_lookup_state(scope, &lp, de->d_name, &f->state); |
d9e5e694 | 3701 | if (r < 0) |
0ec0deaa | 3702 | f->state = UNIT_FILE_BAD; |
81fc054d | 3703 | |
313fe66f | 3704 | if (!strv_isempty(states) && |
3705 | !strv_contains(states, unit_file_state_to_string(f->state))) | |
3706 | continue; | |
3707 | ||
2b6bf07d | 3708 | r = hashmap_put(h, basename(f->path), f); |
d9e5e694 ZJS |
3709 | if (r < 0) |
3710 | return r; | |
0ec0deaa | 3711 | |
d9e5e694 | 3712 | f = NULL; /* prevent cleanup */ |
83096483 LP |
3713 | } |
3714 | } | |
3715 | ||
77cd2c87 | 3716 | return 0; |
83096483 LP |
3717 | } |
3718 | ||
3719 | static const char* const unit_file_state_table[_UNIT_FILE_STATE_MAX] = { | |
babccf14 | 3720 | [UNIT_FILE_ENABLED] = "enabled", |
771faa9a | 3721 | [UNIT_FILE_ENABLED_RUNTIME] = "enabled-runtime", |
babccf14 ZJS |
3722 | [UNIT_FILE_LINKED] = "linked", |
3723 | [UNIT_FILE_LINKED_RUNTIME] = "linked-runtime", | |
15d7ab87 | 3724 | [UNIT_FILE_ALIAS] = "alias", |
babccf14 ZJS |
3725 | [UNIT_FILE_MASKED] = "masked", |
3726 | [UNIT_FILE_MASKED_RUNTIME] = "masked-runtime", | |
3727 | [UNIT_FILE_STATIC] = "static", | |
3728 | [UNIT_FILE_DISABLED] = "disabled", | |
3729 | [UNIT_FILE_INDIRECT] = "indirect", | |
3730 | [UNIT_FILE_GENERATED] = "generated", | |
3731 | [UNIT_FILE_TRANSIENT] = "transient", | |
3732 | [UNIT_FILE_BAD] = "bad", | |
83096483 LP |
3733 | }; |
3734 | ||
3735 | DEFINE_STRING_TABLE_LOOKUP(unit_file_state, UnitFileState); | |
c0576cd6 | 3736 | |
f8662fee | 3737 | static const char* const install_change_type_table[_INSTALL_CHANGE_TYPE_MAX] = { |
1308f72e ZJS |
3738 | [INSTALL_CHANGE_SYMLINK] = "symlink", |
3739 | [INSTALL_CHANGE_UNLINK] = "unlink", | |
3740 | [INSTALL_CHANGE_IS_MASKED] = "masked", | |
bf3b0d5f | 3741 | [INSTALL_CHANGE_IS_MASKED_GENERATOR] = "masked by generator", |
1308f72e ZJS |
3742 | [INSTALL_CHANGE_IS_DANGLING] = "dangling", |
3743 | [INSTALL_CHANGE_DESTINATION_NOT_PRESENT] = "destination not present", | |
3744 | [INSTALL_CHANGE_AUXILIARY_FAILED] = "auxiliary unit failed", | |
c0576cd6 LP |
3745 | }; |
3746 | ||
f8662fee | 3747 | DEFINE_STRING_TABLE_LOOKUP(install_change_type, InstallChangeType); |
d309c1c3 | 3748 | |
b364c4de | 3749 | static const char* const unit_file_preset_mode_table[_UNIT_FILE_PRESET_MODE_MAX] = { |
babccf14 ZJS |
3750 | [UNIT_FILE_PRESET_FULL] = "full", |
3751 | [UNIT_FILE_PRESET_ENABLE_ONLY] = "enable-only", | |
d309c1c3 LP |
3752 | [UNIT_FILE_PRESET_DISABLE_ONLY] = "disable-only", |
3753 | }; | |
3754 | ||
3755 | DEFINE_STRING_TABLE_LOOKUP(unit_file_preset_mode, UnitFilePresetMode); |