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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" |
f4351959 | 13 | #include "chase-symlinks.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 { |
b380b643 | 50 | LookupScope scope; |
0ec0deaa LP |
51 | OrderedHashmap *will_process; |
52 | OrderedHashmap *have_processed; | |
83096483 LP |
53 | } InstallContext; |
54 | ||
8965d9f8 AC |
55 | typedef enum { |
56 | PRESET_UNKNOWN, | |
57 | PRESET_ENABLE, | |
58 | PRESET_DISABLE, | |
59 | } PresetAction; | |
60 | ||
8f7b2566 | 61 | struct UnitFilePresetRule { |
8965d9f8 AC |
62 | char *pattern; |
63 | PresetAction action; | |
4c9565ee | 64 | char **instances; |
8f7b2566 | 65 | }; |
8965d9f8 | 66 | |
0047d54d | 67 | static bool install_info_has_rules(const InstallInfo *i) { |
7a7ec2bf ZJS |
68 | assert(i); |
69 | ||
70 | return !strv_isempty(i->aliases) || | |
71 | !strv_isempty(i->wanted_by) || | |
72 | !strv_isempty(i->required_by); | |
73 | } | |
74 | ||
0047d54d | 75 | static bool install_info_has_also(const InstallInfo *i) { |
7a7ec2bf ZJS |
76 | assert(i); |
77 | ||
78 | return !strv_isempty(i->also); | |
79 | } | |
80 | ||
8f7b2566 | 81 | void unit_file_presets_freep(UnitFilePresets *p) { |
8965d9f8 AC |
82 | if (!p) |
83 | return; | |
84 | ||
de8be28e | 85 | for (size_t i = 0; i < p->n_rules; i++) { |
8965d9f8 | 86 | free(p->rules[i].pattern); |
4c9565ee RB |
87 | strv_free(p->rules[i].instances); |
88 | } | |
8965d9f8 AC |
89 | |
90 | free(p->rules); | |
91 | p->n_rules = 0; | |
92 | } | |
93 | ||
318031fd ZJS |
94 | static const char *const install_mode_table[_INSTALL_MODE_MAX] = { |
95 | [INSTALL_MODE_REGULAR] = "regular", | |
96 | [INSTALL_MODE_LINKED] = "linked", | |
97 | [INSTALL_MODE_ALIAS] = "alias", | |
98 | [INSTALL_MODE_MASKED] = "masked", | |
64f9280e ZJS |
99 | }; |
100 | ||
318031fd | 101 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(install_mode, InstallMode); |
64f9280e | 102 | |
c3e7fba0 | 103 | static int in_search_path(const LookupPaths *lp, const char *path) { |
8f294b45 | 104 | _cleanup_free_ char *parent = NULL; |
45519d13 | 105 | int r; |
8f294b45 | 106 | |
a6f318a5 | 107 | /* Check if 'path' is in lp->search_path. */ |
8f294b45 | 108 | |
a6f318a5 | 109 | r = path_extract_directory(ASSERT_PTR(path), &parent); |
45519d13 LP |
110 | if (r < 0) |
111 | return r; | |
8f294b45 | 112 | |
a6f318a5 ZJS |
113 | return path_strv_contains(ASSERT_PTR(lp)->search_path, parent); |
114 | } | |
115 | ||
116 | static int underneath_search_path(const LookupPaths *lp, const char *path) { | |
117 | /* Check if 'path' is underneath lp->search_path. */ | |
118 | ||
119 | return !!path_startswith_strv(ASSERT_PTR(path), ASSERT_PTR(lp)->search_path); | |
8f294b45 LP |
120 | } |
121 | ||
c3e7fba0 | 122 | static const char* skip_root(const char *root_dir, const char *path) { |
8f9364f9 | 123 | assert(path); |
401017e0 | 124 | |
c3e7fba0 | 125 | if (!root_dir) |
8f9364f9 | 126 | return path; |
401017e0 | 127 | |
c3e7fba0 | 128 | const char *e = path_startswith(path, root_dir); |
8f9364f9 LP |
129 | if (!e) |
130 | return NULL; | |
131 | ||
132 | /* Make sure the returned path starts with a slash */ | |
133 | if (e[0] != '/') { | |
134 | if (e == path || e[-1] != '/') | |
135 | return NULL; | |
401017e0 | 136 | |
8f9364f9 | 137 | e--; |
401017e0 LP |
138 | } |
139 | ||
8f9364f9 | 140 | return e; |
401017e0 LP |
141 | } |
142 | ||
c3e7fba0 | 143 | static int path_is_generator(const LookupPaths *lp, const char *path) { |
f4139308 | 144 | _cleanup_free_ char *parent = NULL; |
45519d13 | 145 | int r; |
f4139308 | 146 | |
c3e7fba0 | 147 | assert(lp); |
f4139308 LP |
148 | assert(path); |
149 | ||
45519d13 LP |
150 | r = path_extract_directory(path, &parent); |
151 | if (r < 0) | |
152 | return r; | |
f4139308 | 153 | |
c3e7fba0 ZJS |
154 | return path_equal_ptr(parent, lp->generator) || |
155 | path_equal_ptr(parent, lp->generator_early) || | |
156 | path_equal_ptr(parent, lp->generator_late); | |
f4139308 LP |
157 | } |
158 | ||
c3e7fba0 | 159 | static int path_is_transient(const LookupPaths *lp, const char *path) { |
e4fca67f | 160 | _cleanup_free_ char *parent = NULL; |
45519d13 | 161 | int r; |
e4fca67f | 162 | |
c3e7fba0 | 163 | assert(lp); |
e4fca67f LP |
164 | assert(path); |
165 | ||
45519d13 LP |
166 | r = path_extract_directory(path, &parent); |
167 | if (r < 0) | |
168 | return r; | |
e4fca67f | 169 | |
c3e7fba0 | 170 | return path_equal_ptr(parent, lp->transient); |
e4fca67f LP |
171 | } |
172 | ||
c3e7fba0 | 173 | static int path_is_control(const LookupPaths *lp, const char *path) { |
e1c5c2b0 | 174 | _cleanup_free_ char *parent = NULL; |
45519d13 | 175 | int r; |
0ec0deaa | 176 | |
c3e7fba0 | 177 | assert(lp); |
0ec0deaa LP |
178 | assert(path); |
179 | ||
45519d13 LP |
180 | r = path_extract_directory(path, &parent); |
181 | if (r < 0) | |
182 | return r; | |
0ec0deaa | 183 | |
c3e7fba0 ZJS |
184 | return path_equal_ptr(parent, lp->persistent_control) || |
185 | path_equal_ptr(parent, lp->runtime_control); | |
344ca755 LP |
186 | } |
187 | ||
c3e7fba0 | 188 | static int path_is_config(const LookupPaths *lp, const char *path, bool check_parent) { |
344ca755 | 189 | _cleanup_free_ char *parent = NULL; |
45519d13 | 190 | int r; |
344ca755 | 191 | |
c3e7fba0 | 192 | assert(lp); |
344ca755 LP |
193 | assert(path); |
194 | ||
d7604756 ZJS |
195 | /* Note that we do *not* have generic checks for /etc or /run in place, since with |
196 | * them we couldn't discern configuration from transient or generated units */ | |
0ec0deaa | 197 | |
dfead90d | 198 | if (check_parent) { |
45519d13 LP |
199 | r = path_extract_directory(path, &parent); |
200 | if (r < 0) | |
201 | return r; | |
dfead90d LP |
202 | |
203 | path = parent; | |
204 | } | |
0ec0deaa | 205 | |
c3e7fba0 ZJS |
206 | return path_equal_ptr(path, lp->persistent_config) || |
207 | path_equal_ptr(path, lp->runtime_config); | |
0ec0deaa LP |
208 | } |
209 | ||
c3e7fba0 | 210 | static int path_is_runtime(const LookupPaths *lp, const char *path, bool check_parent) { |
385eb996 | 211 | _cleanup_free_ char *parent = NULL; |
401017e0 | 212 | const char *rpath; |
45519d13 | 213 | int r; |
385eb996 | 214 | |
c3e7fba0 | 215 | assert(lp); |
385eb996 LP |
216 | assert(path); |
217 | ||
d7604756 ZJS |
218 | /* Everything in /run is considered runtime. On top of that we also add |
219 | * explicit checks for the various runtime directories, as safety net. */ | |
344ca755 | 220 | |
c3e7fba0 | 221 | rpath = skip_root(lp->root_dir, path); |
401017e0 | 222 | if (rpath && path_startswith(rpath, "/run")) |
385eb996 LP |
223 | return true; |
224 | ||
dfead90d | 225 | if (check_parent) { |
45519d13 LP |
226 | r = path_extract_directory(path, &parent); |
227 | if (r < 0) | |
228 | return r; | |
385eb996 | 229 | |
dfead90d LP |
230 | path = parent; |
231 | } | |
232 | ||
c3e7fba0 ZJS |
233 | return path_equal_ptr(path, lp->runtime_config) || |
234 | path_equal_ptr(path, lp->generator) || | |
235 | path_equal_ptr(path, lp->generator_early) || | |
236 | path_equal_ptr(path, lp->generator_late) || | |
237 | path_equal_ptr(path, lp->transient) || | |
238 | path_equal_ptr(path, lp->runtime_control); | |
344ca755 LP |
239 | } |
240 | ||
c3e7fba0 | 241 | static int path_is_vendor_or_generator(const LookupPaths *lp, const char *path) { |
344ca755 LP |
242 | const char *rpath; |
243 | ||
c3e7fba0 | 244 | assert(lp); |
344ca755 LP |
245 | assert(path); |
246 | ||
c3e7fba0 | 247 | rpath = skip_root(lp->root_dir, path); |
344ca755 LP |
248 | if (!rpath) |
249 | return 0; | |
250 | ||
251 | if (path_startswith(rpath, "/usr")) | |
252 | return true; | |
253 | ||
349cc4a5 | 254 | #if HAVE_SPLIT_USR |
344ca755 LP |
255 | if (path_startswith(rpath, "/lib")) |
256 | return true; | |
257 | #endif | |
258 | ||
c3e7fba0 | 259 | if (path_is_generator(lp, rpath)) |
efdbf5fe JC |
260 | return true; |
261 | ||
835cf75a | 262 | return path_equal(rpath, SYSTEM_DATA_UNIT_DIR); |
385eb996 LP |
263 | } |
264 | ||
c3e7fba0 ZJS |
265 | static const char* config_path_from_flags(const LookupPaths *lp, UnitFileFlags flags) { |
266 | assert(lp); | |
83654007 LB |
267 | |
268 | if (FLAGS_SET(flags, UNIT_FILE_PORTABLE)) | |
c3e7fba0 | 269 | return FLAGS_SET(flags, UNIT_FILE_RUNTIME) ? lp->runtime_attached : lp->persistent_attached; |
83654007 | 270 | else |
c3e7fba0 | 271 | return FLAGS_SET(flags, UNIT_FILE_RUNTIME) ? lp->runtime_config : lp->persistent_config; |
83654007 LB |
272 | } |
273 | ||
94e7298d | 274 | InstallChangeType install_changes_add( |
cd44ec5a | 275 | InstallChange **changes, |
da6053d0 | 276 | size_t *n_changes, |
f8662fee | 277 | InstallChangeType type, /* INSTALL_CHANGE_SYMLINK, _UNLINK, _IS_MASKED, _IS_DANGLING, … if positive or errno if negative */ |
0ec0deaa LP |
278 | const char *path, |
279 | const char *source) { | |
280 | ||
12bf0ae4 | 281 | _cleanup_free_ char *p = NULL, *s = NULL; |
cd44ec5a | 282 | InstallChange *c; |
0ec0deaa | 283 | |
0ec0deaa | 284 | assert(!changes == !n_changes); |
f8662fee | 285 | assert(INSTALL_CHANGE_TYPE_VALID(type)); |
93419a96 | 286 | |
94e7298d ZJS |
287 | /* Register a change or error. Note that the return value may be the error |
288 | * that was passed in, or -ENOMEM generated internally. */ | |
289 | ||
0ec0deaa | 290 | if (!changes) |
94e7298d | 291 | return type; |
0ec0deaa | 292 | |
cd44ec5a | 293 | c = reallocarray(*changes, *n_changes + 1, sizeof(InstallChange)); |
0ec0deaa LP |
294 | if (!c) |
295 | return -ENOMEM; | |
0ec0deaa | 296 | *changes = c; |
0ec0deaa | 297 | |
3aa96361 ZJS |
298 | if (path) { |
299 | p = strdup(path); | |
300 | if (!p) | |
301 | return -ENOMEM; | |
0ec0deaa | 302 | |
3aa96361 ZJS |
303 | path_simplify(p); |
304 | } | |
93419a96 LP |
305 | |
306 | if (source) { | |
307 | s = strdup(source); | |
308 | if (!s) | |
309 | return -ENOMEM; | |
310 | ||
4ff361cc | 311 | path_simplify(s); |
93419a96 LP |
312 | } |
313 | ||
cd44ec5a | 314 | c[(*n_changes)++] = (InstallChange) { |
f8662fee | 315 | .type = type, |
93419a96 LP |
316 | .path = TAKE_PTR(p), |
317 | .source = TAKE_PTR(s), | |
318 | }; | |
0ec0deaa | 319 | |
94e7298d | 320 | return type; |
0ec0deaa LP |
321 | } |
322 | ||
cd44ec5a | 323 | void install_changes_free(InstallChange *changes, size_t n_changes) { |
0ec0deaa LP |
324 | assert(changes || n_changes == 0); |
325 | ||
de8be28e | 326 | for (size_t i = 0; i < n_changes; i++) { |
0ec0deaa LP |
327 | free(changes[i].path); |
328 | free(changes[i].source); | |
329 | } | |
330 | ||
331 | free(changes); | |
332 | } | |
333 | ||
cd44ec5a | 334 | void install_changes_dump(int r, const char *verb, const InstallChange *changes, size_t n_changes, bool quiet) { |
32450f53 | 335 | int err = 0; |
af3d8113 ZJS |
336 | |
337 | assert(changes || n_changes == 0); | |
338 | /* If verb is not specified, errors are not allowed! */ | |
339 | assert(verb || r >= 0); | |
340 | ||
de8be28e | 341 | for (size_t i = 0; i < n_changes; i++) { |
f8662fee | 342 | assert(verb || changes[i].type >= 0); |
af3d8113 | 343 | |
5ad58fea ZJS |
344 | /* When making changes here, make sure to also change install_error() in dbus-manager.c. */ |
345 | ||
f8662fee | 346 | switch (changes[i].type) { |
1308f72e | 347 | case INSTALL_CHANGE_SYMLINK: |
af3d8113 | 348 | if (!quiet) |
a760db24 ZJS |
349 | log_info("Created symlink %s %s %s.", |
350 | changes[i].path, | |
fc03e80c | 351 | special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), |
a760db24 | 352 | changes[i].source); |
af3d8113 | 353 | break; |
1308f72e | 354 | case INSTALL_CHANGE_UNLINK: |
af3d8113 | 355 | if (!quiet) |
e75a26d0 | 356 | log_info("Removed \"%s\".", changes[i].path); |
af3d8113 | 357 | break; |
1308f72e | 358 | case INSTALL_CHANGE_IS_MASKED: |
af3d8113 ZJS |
359 | if (!quiet) |
360 | log_info("Unit %s is masked, ignoring.", changes[i].path); | |
361 | break; | |
bf3b0d5f ZJS |
362 | case INSTALL_CHANGE_IS_MASKED_GENERATOR: |
363 | if (!quiet) | |
364 | log_info("Unit %s is masked via a generator and cannot be unmasked.", | |
365 | changes[i].path); | |
366 | break; | |
1308f72e | 367 | case INSTALL_CHANGE_IS_DANGLING: |
893275df ZJS |
368 | if (!quiet) |
369 | log_info("Unit %s is an alias to a unit that is not present, ignoring.", | |
370 | changes[i].path); | |
371 | break; | |
1308f72e | 372 | case INSTALL_CHANGE_DESTINATION_NOT_PRESENT: |
8ae27441 JS |
373 | if (!quiet) |
374 | log_warning("Unit %s is added as a dependency to a non-existent unit %s.", | |
375 | changes[i].source, changes[i].path); | |
376 | break; | |
1308f72e | 377 | case INSTALL_CHANGE_AUXILIARY_FAILED: |
3aa96361 ZJS |
378 | if (!quiet) |
379 | log_warning("Failed to enable auxiliary unit %s, ignoring.", changes[i].source); | |
380 | break; | |
af3d8113 ZJS |
381 | case -EEXIST: |
382 | if (changes[i].source) | |
f8662fee | 383 | err = log_error_errno(changes[i].type, |
32450f53 ZJS |
384 | "Failed to %s unit, file \"%s\" already exists and is a symlink to \"%s\".", |
385 | verb, changes[i].path, changes[i].source); | |
af3d8113 | 386 | else |
f8662fee | 387 | err = log_error_errno(changes[i].type, |
32450f53 ZJS |
388 | "Failed to %s unit, file \"%s\" already exists.", |
389 | verb, changes[i].path); | |
af3d8113 ZJS |
390 | break; |
391 | case -ERFKILL: | |
f8662fee | 392 | err = log_error_errno(changes[i].type, "Failed to %s unit, unit %s is masked.", |
32450f53 | 393 | verb, changes[i].path); |
af3d8113 ZJS |
394 | break; |
395 | case -EADDRNOTAVAIL: | |
f8662fee | 396 | err = log_error_errno(changes[i].type, "Failed to %s unit, unit %s is transient or generated.", |
32450f53 | 397 | verb, changes[i].path); |
af3d8113 | 398 | break; |
a6f318a5 ZJS |
399 | case -ETXTBSY: |
400 | err = log_error_errno(changes[i].type, "Failed to %s unit, file %s is under the systemd unit hierarchy already.", | |
401 | verb, changes[i].path); | |
402 | break; | |
19b9d5d0 | 403 | case -EBADSLT: |
f8662fee | 404 | err = log_error_errno(changes[i].type, "Failed to %s unit, invalid specifier in \"%s\".", |
32450f53 | 405 | verb, changes[i].path); |
19b9d5d0 | 406 | break; |
b0ec372a | 407 | case -EIDRM: |
f8662fee | 408 | err = log_error_errno(changes[i].type, "Failed to %s %s, destination unit %s is a non-template unit.", |
32450f53 | 409 | verb, changes[i].source, changes[i].path); |
b0ec372a | 410 | break; |
d7ceaf72 | 411 | case -EUCLEAN: |
f8662fee | 412 | err = log_error_errno(changes[i].type, |
32450f53 ZJS |
413 | "Failed to %s unit, \"%s\" is not a valid unit name.", |
414 | verb, changes[i].path); | |
d7ceaf72 | 415 | break; |
af3d8113 | 416 | case -ELOOP: |
f8662fee | 417 | err = log_error_errno(changes[i].type, "Failed to %s unit, refusing to operate on linked unit file %s.", |
32450f53 | 418 | verb, changes[i].path); |
af3d8113 | 419 | break; |
cbfdbffb ZJS |
420 | case -EXDEV: |
421 | if (changes[i].source) | |
f8662fee | 422 | err = log_error_errno(changes[i].type, "Failed to %s unit, cannot alias %s as %s.", |
cbfdbffb ZJS |
423 | verb, changes[i].source, changes[i].path); |
424 | else | |
f8662fee | 425 | err = log_error_errno(changes[i].type, "Failed to %s unit, invalid unit reference \"%s\".", |
cbfdbffb ZJS |
426 | verb, changes[i].path); |
427 | break; | |
637d6e5b | 428 | case -ENOENT: |
f8662fee | 429 | err = log_error_errno(changes[i].type, "Failed to %s unit, unit %s does not exist.", |
32450f53 | 430 | verb, changes[i].path); |
637d6e5b | 431 | break; |
6ec4c852 | 432 | case -EUNATCH: |
f8662fee | 433 | err = log_error_errno(changes[i].type, "Failed to %s unit, cannot resolve specifiers in \"%s\".", |
32450f53 | 434 | verb, changes[i].path); |
6ec4c852 | 435 | break; |
af3d8113 | 436 | default: |
f8662fee LP |
437 | assert(changes[i].type < 0); |
438 | err = log_error_errno(changes[i].type, "Failed to %s unit, file \"%s\": %m", | |
32450f53 | 439 | verb, changes[i].path); |
af3d8113 ZJS |
440 | } |
441 | } | |
442 | ||
32450f53 | 443 | if (r < 0 && err >= 0) |
af3d8113 ZJS |
444 | log_error_errno(r, "Failed to %s: %m.", verb); |
445 | } | |
446 | ||
25ea9277 | 447 | /** |
3fc53351 ZJS |
448 | * Checks if two symlink targets (starting from src) are equivalent as far as the unit enablement logic is |
449 | * concerned. If the target is in the unit search path, then anything with the same name is equivalent. | |
450 | * If outside the unit search path, paths must be identical. | |
25ea9277 | 451 | */ |
3fc53351 ZJS |
452 | static int chroot_unit_symlinks_equivalent( |
453 | const LookupPaths *lp, | |
454 | const char *src, | |
455 | const char *target_a, | |
456 | const char *target_b) { | |
457 | ||
458 | assert(lp); | |
459 | assert(src); | |
460 | assert(target_a); | |
461 | assert(target_b); | |
25ea9277 ZJS |
462 | |
463 | /* This will give incorrect results if the paths are relative and go outside | |
464 | * of the chroot. False negatives are possible. */ | |
465 | ||
3fc53351 ZJS |
466 | const char *root = lp->root_dir ?: "/"; |
467 | _cleanup_free_ char *dirname = NULL; | |
468 | int r; | |
469 | ||
470 | if (!path_is_absolute(target_a) || !path_is_absolute(target_b)) { | |
471 | r = path_extract_directory(src, &dirname); | |
472 | if (r < 0) | |
473 | return r; | |
474 | } | |
475 | ||
476 | _cleanup_free_ char *a = path_join(path_is_absolute(target_a) ? root : dirname, target_a); | |
477 | _cleanup_free_ char *b = path_join(path_is_absolute(target_b) ? root : dirname, target_b); | |
478 | if (!a || !b) | |
479 | return log_oom(); | |
ae9efab7 | 480 | |
3fc53351 ZJS |
481 | r = path_equal_or_files_same(a, b, 0); |
482 | if (r != 0) | |
483 | return r; | |
484 | ||
485 | _cleanup_free_ char *a_name = NULL, *b_name = NULL; | |
486 | r = path_extract_filename(a, &a_name); | |
487 | if (r < 0) | |
488 | return r; | |
489 | r = path_extract_filename(b, &b_name); | |
490 | if (r < 0) | |
491 | return r; | |
492 | ||
493 | return streq(a_name, b_name) && | |
494 | path_startswith_strv(a, lp->search_path) && | |
495 | path_startswith_strv(b, lp->search_path); | |
25ea9277 ZJS |
496 | } |
497 | ||
0ec0deaa | 498 | static int create_symlink( |
c3e7fba0 | 499 | const LookupPaths *lp, |
0ec0deaa LP |
500 | const char *old_path, |
501 | const char *new_path, | |
502 | bool force, | |
cd44ec5a | 503 | InstallChange **changes, |
da6053d0 | 504 | size_t *n_changes) { |
0ec0deaa | 505 | |
3fc53351 | 506 | _cleanup_free_ char *dest = NULL; |
60bec8e4 | 507 | const char *rp; |
0ec0deaa LP |
508 | int r; |
509 | ||
510 | assert(old_path); | |
511 | assert(new_path); | |
512 | ||
c3e7fba0 | 513 | rp = skip_root(lp->root_dir, old_path); |
60bec8e4 ZJS |
514 | if (rp) |
515 | old_path = rp; | |
516 | ||
4f5c2485 ZJS |
517 | /* Actually create a symlink, and remember that we did. This function is |
518 | * smart enough to check if there's already a valid symlink in place. | |
85158303 | 519 | * |
4f5c2485 ZJS |
520 | * Returns 1 if a symlink was created or already exists and points to the |
521 | * right place, or negative on error. | |
85158303 | 522 | */ |
0ec0deaa | 523 | |
35cd0ba5 | 524 | (void) mkdir_parents_label(new_path, 0755); |
0ec0deaa LP |
525 | |
526 | if (symlink(old_path, new_path) >= 0) { | |
f31f10a6 ZJS |
527 | r = install_changes_add(changes, n_changes, INSTALL_CHANGE_SYMLINK, new_path, old_path); |
528 | if (r < 0) | |
529 | return r; | |
3de15214 | 530 | return 1; |
0ec0deaa LP |
531 | } |
532 | ||
94e7298d ZJS |
533 | if (errno != EEXIST) |
534 | return install_changes_add(changes, n_changes, -errno, new_path, NULL); | |
0ec0deaa LP |
535 | |
536 | r = readlink_malloc(new_path, &dest); | |
7d782f26 ZJS |
537 | if (r < 0) { |
538 | /* translate EINVAL (non-symlink exists) to EEXIST */ | |
539 | if (r == -EINVAL) | |
540 | r = -EEXIST; | |
541 | ||
94e7298d | 542 | return install_changes_add(changes, n_changes, r, new_path, NULL); |
7d782f26 | 543 | } |
0ec0deaa | 544 | |
3fc53351 | 545 | if (chroot_unit_symlinks_equivalent(lp, new_path, dest, old_path)) { |
e2341b6b DT |
546 | log_debug("Symlink %s %s %s already exists", |
547 | new_path, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), dest); | |
85158303 | 548 | return 1; |
3e8d06d9 | 549 | } |
0ec0deaa | 550 | |
94e7298d ZJS |
551 | if (!force) |
552 | return install_changes_add(changes, n_changes, -EEXIST, new_path, dest); | |
0ec0deaa LP |
553 | |
554 | r = symlink_atomic(old_path, new_path); | |
94e7298d ZJS |
555 | if (r < 0) |
556 | return install_changes_add(changes, n_changes, r, new_path, NULL); | |
0ec0deaa | 557 | |
f31f10a6 ZJS |
558 | r = install_changes_add(changes, n_changes, INSTALL_CHANGE_UNLINK, new_path, NULL); |
559 | if (r < 0) | |
560 | return r; | |
561 | r = install_changes_add(changes, n_changes, INSTALL_CHANGE_SYMLINK, new_path, old_path); | |
562 | if (r < 0) | |
563 | return r; | |
0ec0deaa | 564 | |
3de15214 | 565 | return 1; |
0ec0deaa LP |
566 | } |
567 | ||
83096483 LP |
568 | static int mark_symlink_for_removal( |
569 | Set **remove_symlinks_to, | |
570 | const char *p) { | |
571 | ||
572 | char *n; | |
573 | int r; | |
574 | ||
575 | assert(p); | |
576 | ||
548f6937 | 577 | r = set_ensure_allocated(remove_symlinks_to, &path_hash_ops); |
83096483 LP |
578 | if (r < 0) |
579 | return r; | |
580 | ||
581 | n = strdup(p); | |
582 | if (!n) | |
583 | return -ENOMEM; | |
584 | ||
4ff361cc | 585 | path_simplify(n); |
83096483 | 586 | |
ef42202a | 587 | r = set_consume(*remove_symlinks_to, n); |
d25e100b LP |
588 | if (r == -EEXIST) |
589 | return 0; | |
ef42202a | 590 | if (r < 0) |
d25e100b | 591 | return r; |
83096483 | 592 | |
0ec0deaa | 593 | return 1; |
83096483 LP |
594 | } |
595 | ||
596 | static int remove_marked_symlinks_fd( | |
597 | Set *remove_symlinks_to, | |
598 | int fd, | |
599 | const char *path, | |
600 | const char *config_path, | |
401017e0 | 601 | const LookupPaths *lp, |
3b3557c4 | 602 | bool dry_run, |
0ec0deaa | 603 | bool *restart, |
cd44ec5a | 604 | InstallChange **changes, |
da6053d0 | 605 | size_t *n_changes) { |
83096483 | 606 | |
7fd1b19b | 607 | _cleanup_closedir_ DIR *d = NULL; |
bcafe923 | 608 | int r = 0; |
83096483 LP |
609 | |
610 | assert(remove_symlinks_to); | |
611 | assert(fd >= 0); | |
612 | assert(path); | |
613 | assert(config_path); | |
401017e0 | 614 | assert(lp); |
0ec0deaa | 615 | assert(restart); |
83096483 LP |
616 | |
617 | d = fdopendir(fd); | |
618 | if (!d) { | |
03e334a1 | 619 | safe_close(fd); |
83096483 LP |
620 | return -errno; |
621 | } | |
622 | ||
623 | rewinddir(d); | |
624 | ||
06693181 | 625 | FOREACH_DIRENT(de, d, return -errno) |
83096483 | 626 | |
83096483 | 627 | if (de->d_type == DT_DIR) { |
7fd1b19b | 628 | _cleanup_free_ char *p = NULL; |
d25e100b | 629 | int nfd, q; |
83096483 LP |
630 | |
631 | nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
632 | if (nfd < 0) { | |
633 | if (errno == ENOENT) | |
634 | continue; | |
635 | ||
636 | if (r == 0) | |
637 | r = -errno; | |
638 | continue; | |
639 | } | |
640 | ||
641 | p = path_make_absolute(de->d_name, path); | |
642 | if (!p) { | |
03e334a1 | 643 | safe_close(nfd); |
d9e5e694 | 644 | return -ENOMEM; |
83096483 LP |
645 | } |
646 | ||
647 | /* This will close nfd, regardless whether it succeeds or not */ | |
3b3557c4 | 648 | q = remove_marked_symlinks_fd(remove_symlinks_to, nfd, p, config_path, lp, dry_run, restart, changes, n_changes); |
bcafe923 | 649 | if (q < 0 && r == 0) |
83096483 LP |
650 | r = q; |
651 | ||
652 | } else if (de->d_type == DT_LNK) { | |
7a6c73da | 653 | _cleanup_free_ char *p = NULL; |
83096483 | 654 | bool found; |
0ec0deaa | 655 | int q; |
83096483 | 656 | |
7410616c | 657 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
bcafe923 LP |
658 | continue; |
659 | ||
83096483 | 660 | p = path_make_absolute(de->d_name, path); |
d9e5e694 ZJS |
661 | if (!p) |
662 | return -ENOMEM; | |
4ff361cc | 663 | path_simplify(p); |
83096483 | 664 | |
7a6c73da | 665 | /* We remove all links pointing to a file or path that is marked, as well as all |
9f61c9f7 ZJS |
666 | * files sharing the same name as a file that is marked, and files sharing the same |
667 | * name after the instance has been removed. Do path chasing only if we don't already | |
668 | * know that we want to remove the symlink. */ | |
7a6c73da | 669 | found = set_contains(remove_symlinks_to, de->d_name); |
212a24f0 | 670 | |
7a6c73da | 671 | if (!found) { |
9f61c9f7 ZJS |
672 | _cleanup_free_ char *template = NULL; |
673 | ||
674 | q = unit_name_template(de->d_name, &template); | |
675 | if (q < 0 && q != -EINVAL) | |
676 | return q; | |
677 | if (q >= 0) | |
678 | found = set_contains(remove_symlinks_to, template); | |
679 | } | |
7a6c73da | 680 | |
9f61c9f7 ZJS |
681 | if (!found) { |
682 | _cleanup_free_ char *dest = NULL; | |
7a6c73da ZJS |
683 | |
684 | q = chase_symlinks(p, lp->root_dir, CHASE_NONEXISTENT, &dest, NULL); | |
685 | if (q == -ENOENT) | |
686 | continue; | |
687 | if (q < 0) { | |
688 | log_debug_errno(q, "Failed to resolve symlink \"%s\": %m", p); | |
cd44ec5a | 689 | install_changes_add(changes, n_changes, q, p, NULL); |
83096483 | 690 | |
7a6c73da ZJS |
691 | if (r == 0) |
692 | r = q; | |
693 | continue; | |
694 | } | |
695 | ||
696 | found = set_contains(remove_symlinks_to, dest) || | |
697 | set_contains(remove_symlinks_to, basename(dest)); | |
698 | ||
699 | } | |
0ec0deaa | 700 | |
83096483 | 701 | |
1dacfd2a LP |
702 | if (!found) |
703 | continue; | |
83096483 | 704 | |
3b3557c4 JS |
705 | if (!dry_run) { |
706 | if (unlinkat(fd, de->d_name, 0) < 0 && errno != ENOENT) { | |
707 | if (r == 0) | |
708 | r = -errno; | |
cd44ec5a | 709 | install_changes_add(changes, n_changes, -errno, p, NULL); |
3b3557c4 JS |
710 | continue; |
711 | } | |
bcafe923 | 712 | |
3b3557c4 JS |
713 | (void) rmdir_parents(p, config_path); |
714 | } | |
83096483 | 715 | |
f31f10a6 ZJS |
716 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_UNLINK, p, NULL); |
717 | if (q < 0) | |
718 | return q; | |
1dacfd2a | 719 | |
12bf0ae4 ZJS |
720 | /* Now, remember the full path (but with the root prefix removed) of |
721 | * the symlink we just removed, and remove any symlinks to it, too. */ | |
401017e0 | 722 | |
7a6c73da | 723 | const char *rp = skip_root(lp->root_dir, p); |
401017e0 | 724 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: p); |
0ec0deaa LP |
725 | if (q < 0) |
726 | return q; | |
3b3557c4 | 727 | if (q > 0 && !dry_run) |
0ec0deaa | 728 | *restart = true; |
83096483 | 729 | } |
83096483 | 730 | |
83096483 LP |
731 | return r; |
732 | } | |
733 | ||
734 | static int remove_marked_symlinks( | |
735 | Set *remove_symlinks_to, | |
736 | const char *config_path, | |
401017e0 | 737 | const LookupPaths *lp, |
3b3557c4 | 738 | bool dry_run, |
cd44ec5a | 739 | InstallChange **changes, |
da6053d0 | 740 | size_t *n_changes) { |
83096483 | 741 | |
da39f6a6 | 742 | _cleanup_close_ int fd = -1; |
0ec0deaa | 743 | bool restart; |
d25e100b | 744 | int r = 0; |
83096483 LP |
745 | |
746 | assert(config_path); | |
401017e0 | 747 | assert(lp); |
83096483 LP |
748 | |
749 | if (set_size(remove_symlinks_to) <= 0) | |
750 | return 0; | |
751 | ||
67852d08 | 752 | fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC); |
83096483 | 753 | if (fd < 0) |
32d9493e | 754 | return errno == ENOENT ? 0 : -errno; |
83096483 LP |
755 | |
756 | do { | |
757 | int q, cfd; | |
0ec0deaa | 758 | restart = false; |
83096483 | 759 | |
ead34950 | 760 | cfd = fcntl(fd, F_DUPFD_CLOEXEC, 3); |
d25e100b LP |
761 | if (cfd < 0) |
762 | return -errno; | |
83096483 LP |
763 | |
764 | /* This takes possession of cfd and closes it */ | |
3b3557c4 | 765 | q = remove_marked_symlinks_fd(remove_symlinks_to, cfd, config_path, config_path, lp, dry_run, &restart, changes, n_changes); |
83096483 LP |
766 | if (r == 0) |
767 | r = q; | |
0ec0deaa | 768 | } while (restart); |
83096483 | 769 | |
83096483 LP |
770 | return r; |
771 | } | |
772 | ||
0047d54d | 773 | static int is_symlink_with_known_name(const InstallInfo *i, const char *name) { |
5cd8ae31 ZJS |
774 | int r; |
775 | ||
776 | if (streq(name, i->name)) | |
777 | return true; | |
778 | ||
779 | if (strv_contains(i->aliases, name)) | |
780 | return true; | |
781 | ||
782 | /* Look for template symlink matching DefaultInstance */ | |
783 | if (i->default_instance && unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE)) { | |
784 | _cleanup_free_ char *s = NULL; | |
785 | ||
786 | r = unit_name_replace_instance(i->name, i->default_instance, &s); | |
787 | if (r < 0) { | |
788 | if (r != -EINVAL) | |
789 | return r; | |
790 | ||
791 | } else if (streq(name, s)) | |
792 | return true; | |
793 | } | |
794 | ||
795 | return false; | |
796 | } | |
797 | ||
43b4e305 MS |
798 | static int find_symlinks_in_directory( |
799 | DIR *dir, | |
800 | const char *dir_path, | |
0ec0deaa | 801 | const char *root_dir, |
0047d54d | 802 | const InstallInfo *info, |
466f6979 ZJS |
803 | bool ignore_destination, |
804 | bool match_name, | |
4b37c89f | 805 | bool ignore_same_name, |
83096483 LP |
806 | const char *config_path, |
807 | bool *same_name_link) { | |
808 | ||
d25e100b | 809 | int r = 0; |
83096483 | 810 | |
43b4e305 | 811 | FOREACH_DIRENT(de, dir, return -errno) { |
466f6979 | 812 | bool found_path = false, found_dest = false, b = false; |
43b4e305 | 813 | int q; |
83096483 | 814 | |
43b4e305 MS |
815 | if (de->d_type != DT_LNK) |
816 | continue; | |
83096483 | 817 | |
466f6979 ZJS |
818 | if (!ignore_destination) { |
819 | _cleanup_free_ char *dest = NULL; | |
820 | ||
821 | /* Acquire symlink destination */ | |
822 | q = readlinkat_malloc(dirfd(dir), de->d_name, &dest); | |
823 | if (q == -ENOENT) | |
824 | continue; | |
825 | if (q < 0) { | |
826 | if (r == 0) | |
827 | r = q; | |
828 | continue; | |
829 | } | |
83096483 | 830 | |
466f6979 ZJS |
831 | /* Make absolute */ |
832 | if (!path_is_absolute(dest)) { | |
833 | char *x; | |
83096483 | 834 | |
466f6979 ZJS |
835 | x = path_join(dir_path, dest); |
836 | if (!x) | |
837 | return -ENOMEM; | |
83096483 | 838 | |
466f6979 ZJS |
839 | free_and_replace(dest, x); |
840 | } | |
841 | ||
842 | /* Check if what the symlink points to matches what we are looking for */ | |
843 | found_dest = streq(basename(dest), info->name); | |
43b4e305 | 844 | } |
83096483 | 845 | |
4a84db4c | 846 | assert(unit_name_is_valid(info->name, UNIT_NAME_ANY)); |
0ec0deaa | 847 | |
466f6979 ZJS |
848 | /* Check if the symlink itself matches what we are looking for. |
849 | * | |
850 | * If ignore_destination is specified, we only look at the source name. | |
851 | * | |
852 | * If ignore_same_name is specified, we are in one of the directories which | |
853 | * have lower priority than the unit file, and even if a file or symlink with | |
854 | * this name was found, we should ignore it. */ | |
855 | ||
856 | if (ignore_destination || !ignore_same_name) | |
857 | found_path = streq(de->d_name, info->name); | |
858 | ||
859 | if (!found_path && ignore_destination) { | |
860 | _cleanup_free_ char *template = NULL; | |
861 | ||
862 | q = unit_name_template(de->d_name, &template); | |
863 | if (q < 0 && q != -EINVAL) | |
864 | return q; | |
865 | if (q >= 0) | |
866 | found_dest = streq(template, info->name); | |
867 | } | |
0ec0deaa | 868 | |
43b4e305 MS |
869 | if (found_path && found_dest) { |
870 | _cleanup_free_ char *p = NULL, *t = NULL; | |
0ec0deaa | 871 | |
466f6979 | 872 | /* Filter out same name links in the main config path */ |
43b4e305 | 873 | p = path_make_absolute(de->d_name, dir_path); |
4a84db4c | 874 | t = path_make_absolute(info->name, config_path); |
83096483 | 875 | |
43b4e305 MS |
876 | if (!p || !t) |
877 | return -ENOMEM; | |
83096483 | 878 | |
43b4e305 MS |
879 | b = path_equal(p, t); |
880 | } | |
83096483 | 881 | |
43b4e305 MS |
882 | if (b) |
883 | *same_name_link = true; | |
884 | else if (found_path || found_dest) { | |
466f6979 | 885 | if (!match_name) |
43b4e305 | 886 | return 1; |
83096483 | 887 | |
43b4e305 | 888 | /* Check if symlink name is in the set of names used by [Install] */ |
4a84db4c | 889 | q = is_symlink_with_known_name(info, de->d_name); |
43b4e305 MS |
890 | if (q < 0) |
891 | return q; | |
892 | if (q > 0) | |
893 | return 1; | |
83096483 LP |
894 | } |
895 | } | |
d25e100b LP |
896 | |
897 | return r; | |
83096483 LP |
898 | } |
899 | ||
900 | static int find_symlinks( | |
0ec0deaa | 901 | const char *root_dir, |
0047d54d | 902 | const InstallInfo *i, |
d9b4b48f | 903 | bool match_name, |
4b37c89f | 904 | bool ignore_same_name, |
83096483 LP |
905 | const char *config_path, |
906 | bool *same_name_link) { | |
907 | ||
43b4e305 | 908 | _cleanup_closedir_ DIR *config_dir = NULL; |
43b4e305 | 909 | int r = 0; |
83096483 | 910 | |
5cd8ae31 | 911 | assert(i); |
83096483 LP |
912 | assert(config_path); |
913 | assert(same_name_link); | |
914 | ||
43b4e305 MS |
915 | config_dir = opendir(config_path); |
916 | if (!config_dir) { | |
a1feacf7 | 917 | if (IN_SET(errno, ENOENT, ENOTDIR, EACCES)) |
d5891fda | 918 | return 0; |
83096483 | 919 | return -errno; |
d5891fda | 920 | } |
83096483 | 921 | |
43b4e305 MS |
922 | FOREACH_DIRENT(de, config_dir, return -errno) { |
923 | const char *suffix; | |
924 | _cleanup_free_ const char *path = NULL; | |
925 | _cleanup_closedir_ DIR *d = NULL; | |
926 | ||
43b4e305 MS |
927 | if (de->d_type != DT_DIR) |
928 | continue; | |
929 | ||
930 | suffix = strrchr(de->d_name, '.'); | |
931 | if (!STRPTR_IN_SET(suffix, ".wants", ".requires")) | |
932 | continue; | |
933 | ||
934 | path = path_join(config_path, de->d_name); | |
935 | if (!path) | |
936 | return -ENOMEM; | |
937 | ||
938 | d = opendir(path); | |
939 | if (!d) { | |
e75a26d0 | 940 | log_error_errno(errno, "Failed to open directory \"%s\" while scanning for symlinks, ignoring: %m", path); |
43b4e305 MS |
941 | continue; |
942 | } | |
943 | ||
466f6979 ZJS |
944 | r = find_symlinks_in_directory(d, path, root_dir, i, |
945 | /* ignore_destination= */ true, | |
946 | /* match_name= */ match_name, | |
947 | /* ignore_same_name= */ ignore_same_name, | |
948 | config_path, | |
949 | same_name_link); | |
43b4e305 MS |
950 | if (r > 0) |
951 | return 1; | |
952 | else if (r < 0) | |
e75a26d0 | 953 | log_debug_errno(r, "Failed to look up symlinks in \"%s\": %m", path); |
43b4e305 MS |
954 | } |
955 | ||
956 | /* We didn't find any suitable symlinks in .wants or .requires directories, let's look for linked unit files in this directory. */ | |
957 | rewinddir(config_dir); | |
466f6979 ZJS |
958 | return find_symlinks_in_directory(config_dir, config_path, root_dir, i, |
959 | /* ignore_destination= */ false, | |
960 | /* match_name= */ match_name, | |
961 | /* ignore_same_name= */ ignore_same_name, | |
962 | config_path, | |
963 | same_name_link); | |
83096483 LP |
964 | } |
965 | ||
966 | static int find_symlinks_in_scope( | |
b380b643 | 967 | LookupScope scope, |
c3e7fba0 | 968 | const LookupPaths *lp, |
0047d54d | 969 | const InstallInfo *info, |
d9b4b48f | 970 | bool match_name, |
83096483 LP |
971 | UnitFileState *state) { |
972 | ||
dfead90d LP |
973 | bool same_name_link_runtime = false, same_name_link_config = false; |
974 | bool enabled_in_runtime = false, enabled_at_all = false; | |
4b37c89f | 975 | bool ignore_same_name = false; |
0ec0deaa | 976 | int r; |
83096483 | 977 | |
c3e7fba0 | 978 | assert(lp); |
4a84db4c | 979 | assert(info); |
83096483 | 980 | |
c3e7fba0 | 981 | /* As we iterate over the list of search paths in lp->search_path, we may encounter "same name" |
4b37c89f | 982 | * symlinks. The ones which are "below" (i.e. have lower priority) than the unit file itself are |
5238e957 | 983 | * effectively masked, so we should ignore them. */ |
4b37c89f | 984 | |
c3e7fba0 | 985 | STRV_FOREACH(p, lp->search_path) { |
dfead90d LP |
986 | bool same_name_link = false; |
987 | ||
4a84db4c | 988 | r = find_symlinks(lp->root_dir, info, match_name, ignore_same_name, *p, &same_name_link); |
dfead90d LP |
989 | if (r < 0) |
990 | return r; | |
991 | if (r > 0) { | |
992 | /* We found symlinks in this dir? Yay! Let's see where precisely it is enabled. */ | |
993 | ||
c3e7fba0 | 994 | if (path_equal_ptr(*p, lp->persistent_config)) { |
dfead90d LP |
995 | /* This is the best outcome, let's return it immediately. */ |
996 | *state = UNIT_FILE_ENABLED; | |
997 | return 1; | |
998 | } | |
999 | ||
bb2682bc | 1000 | /* look for global enablement of user units */ |
b380b643 | 1001 | if (scope == LOOKUP_SCOPE_USER && path_is_user_config_dir(*p)) { |
d2561cfd ZJS |
1002 | *state = UNIT_FILE_ENABLED; |
1003 | return 1; | |
1004 | } | |
1005 | ||
c3e7fba0 | 1006 | r = path_is_runtime(lp, *p, false); |
dfead90d LP |
1007 | if (r < 0) |
1008 | return r; | |
1009 | if (r > 0) | |
1010 | enabled_in_runtime = true; | |
1011 | else | |
1012 | enabled_at_all = true; | |
1013 | ||
1014 | } else if (same_name_link) { | |
c3e7fba0 | 1015 | if (path_equal_ptr(*p, lp->persistent_config)) |
dfead90d LP |
1016 | same_name_link_config = true; |
1017 | else { | |
c3e7fba0 | 1018 | r = path_is_runtime(lp, *p, false); |
dfead90d LP |
1019 | if (r < 0) |
1020 | return r; | |
1021 | if (r > 0) | |
1022 | same_name_link_runtime = true; | |
1023 | } | |
1024 | } | |
4b37c89f ZJS |
1025 | |
1026 | /* Check if next iteration will be "below" the unit file (either a regular file | |
1027 | * or a symlink), and hence should be ignored */ | |
4a84db4c | 1028 | if (!ignore_same_name && path_startswith(info->path, *p)) |
4b37c89f | 1029 | ignore_same_name = true; |
83096483 LP |
1030 | } |
1031 | ||
dfead90d | 1032 | if (enabled_in_runtime) { |
0ec0deaa | 1033 | *state = UNIT_FILE_ENABLED_RUNTIME; |
dfead90d LP |
1034 | return 1; |
1035 | } | |
1036 | ||
1037 | /* Here's a special rule: if the unit we are looking for is an instance, and it symlinked in the search path | |
1038 | * outside of runtime and configuration directory, then we consider it statically enabled. Note we do that only | |
1039 | * for instance, not for regular names, as those are merely aliases, while instances explicitly instantiate | |
1040 | * something, and hence are a much stronger concept. */ | |
4a84db4c | 1041 | if (enabled_at_all && unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { |
dfead90d LP |
1042 | *state = UNIT_FILE_STATIC; |
1043 | return 1; | |
83096483 LP |
1044 | } |
1045 | ||
1046 | /* Hmm, we didn't find it, but maybe we found the same name | |
1047 | * link? */ | |
dfead90d | 1048 | if (same_name_link_config) { |
0ec0deaa LP |
1049 | *state = UNIT_FILE_LINKED; |
1050 | return 1; | |
1051 | } | |
83096483 LP |
1052 | if (same_name_link_runtime) { |
1053 | *state = UNIT_FILE_LINKED_RUNTIME; | |
1054 | return 1; | |
83096483 LP |
1055 | } |
1056 | ||
1057 | return 0; | |
1058 | } | |
1059 | ||
acb5b834 | 1060 | static void install_info_clear(InstallInfo *i) { |
0ec0deaa LP |
1061 | if (!i) |
1062 | return; | |
83096483 | 1063 | |
acb5b834 ZJS |
1064 | i->name = mfree(i->name); |
1065 | i->path = mfree(i->path); | |
1066 | i->root = mfree(i->root); | |
1067 | i->aliases = strv_free(i->aliases); | |
1068 | i->wanted_by = strv_free(i->wanted_by); | |
1069 | i->required_by = strv_free(i->required_by); | |
1070 | i->also = strv_free(i->also); | |
1071 | i->default_instance = mfree(i->default_instance); | |
1072 | i->symlink_target = mfree(i->symlink_target); | |
0ec0deaa | 1073 | } |
83096483 | 1074 | |
acb5b834 ZJS |
1075 | static InstallInfo* install_info_free(InstallInfo *i) { |
1076 | install_info_clear(i); | |
1077 | return mfree(i); | |
1078 | } | |
1079 | ||
1080 | DEFINE_TRIVIAL_CLEANUP_FUNC(InstallInfo*, install_info_free); | |
1081 | ||
4a84db4c ZJS |
1082 | static void install_context_done(InstallContext *ctx) { |
1083 | assert(ctx); | |
83096483 | 1084 | |
4a84db4c ZJS |
1085 | ctx->will_process = ordered_hashmap_free_with_destructor(ctx->will_process, install_info_free); |
1086 | ctx->have_processed = ordered_hashmap_free_with_destructor(ctx->have_processed, install_info_free); | |
0ec0deaa | 1087 | } |
83096483 | 1088 | |
0047d54d ZJS |
1089 | static InstallInfo *install_info_find(InstallContext *ctx, const char *name) { |
1090 | InstallInfo *i; | |
83096483 | 1091 | |
4a84db4c | 1092 | i = ordered_hashmap_get(ctx->have_processed, name); |
0ec0deaa LP |
1093 | if (i) |
1094 | return i; | |
83096483 | 1095 | |
4a84db4c | 1096 | return ordered_hashmap_get(ctx->will_process, name); |
83096483 LP |
1097 | } |
1098 | ||
af3d8113 | 1099 | static int install_info_may_process( |
0047d54d | 1100 | const InstallInfo *i, |
c3e7fba0 | 1101 | const LookupPaths *lp, |
cd44ec5a | 1102 | InstallChange **changes, |
da6053d0 | 1103 | size_t *n_changes) { |
76adb5b8 | 1104 | assert(i); |
c3e7fba0 | 1105 | assert(lp); |
76adb5b8 | 1106 | |
047d91f9 ZJS |
1107 | /* Checks whether the loaded unit file is one we should process, or is masked, |
1108 | * transient or generated and thus not subject to enable/disable operations. */ | |
76adb5b8 | 1109 | |
94e7298d ZJS |
1110 | if (i->install_mode == INSTALL_MODE_MASKED) |
1111 | return install_changes_add(changes, n_changes, -ERFKILL, i->path, NULL); | |
c3e7fba0 | 1112 | if (path_is_generator(lp, i->path) || |
94e7298d ZJS |
1113 | path_is_transient(lp, i->path)) |
1114 | return install_changes_add(changes, n_changes, -EADDRNOTAVAIL, i->path, NULL); | |
76adb5b8 LP |
1115 | |
1116 | return 0; | |
1117 | } | |
1118 | ||
ff56349d | 1119 | /** |
0047d54d | 1120 | * Adds a new InstallInfo entry under name in the InstallContext.will_process |
ff56349d | 1121 | * hashmap, or retrieves the existing one if already present. |
19539807 ZJS |
1122 | * |
1123 | * Returns negative on error, 0 if the unit was already known, 1 otherwise. | |
ff56349d | 1124 | */ |
83096483 | 1125 | static int install_info_add( |
4a84db4c | 1126 | InstallContext *ctx, |
83096483 | 1127 | const char *name, |
0ec0deaa | 1128 | const char *path, |
de61a04b | 1129 | const char *root, |
19539807 | 1130 | bool auxiliary, |
0047d54d | 1131 | InstallInfo **ret) { |
0ec0deaa | 1132 | |
83096483 LP |
1133 | int r; |
1134 | ||
4a84db4c | 1135 | assert(ctx); |
83096483 | 1136 | |
08f46856 BR |
1137 | if (!name) { |
1138 | /* 'name' and 'path' must not both be null. Check here 'path' using assert_se() to | |
1139 | * workaround a bug in gcc that generates a -Wnonnull warning when calling basename(), | |
1140 | * but this cannot be possible in any code path (See #6119). */ | |
1141 | assert_se(path); | |
2b6bf07d | 1142 | name = basename(path); |
08f46856 | 1143 | } |
83096483 | 1144 | |
7410616c | 1145 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
83096483 LP |
1146 | return -EINVAL; |
1147 | ||
acb5b834 | 1148 | InstallInfo *i = install_info_find(ctx, name); |
0ec0deaa | 1149 | if (i) { |
19539807 ZJS |
1150 | i->auxiliary = i->auxiliary && auxiliary; |
1151 | ||
0ec0deaa LP |
1152 | if (ret) |
1153 | *ret = i; | |
83096483 | 1154 | return 0; |
0ec0deaa | 1155 | } |
83096483 | 1156 | |
acb5b834 ZJS |
1157 | _cleanup_(install_info_freep) InstallInfo *alloc = new(InstallInfo, 1); |
1158 | if (!alloc) | |
83096483 | 1159 | return -ENOMEM; |
d23aeead | 1160 | |
acb5b834 | 1161 | *alloc = (InstallInfo) { |
91810c8f | 1162 | .install_mode = _INSTALL_MODE_INVALID, |
d23aeead LP |
1163 | .auxiliary = auxiliary, |
1164 | }; | |
83096483 | 1165 | |
acb5b834 ZJS |
1166 | alloc->name = strdup(name); |
1167 | if (!alloc->name) | |
1168 | return -ENOMEM; | |
83096483 | 1169 | |
de61a04b | 1170 | if (root) { |
acb5b834 ZJS |
1171 | alloc->root = strdup(root); |
1172 | if (!alloc->root) | |
1173 | return -ENOMEM; | |
de61a04b LP |
1174 | } |
1175 | ||
83096483 | 1176 | if (path) { |
acb5b834 ZJS |
1177 | alloc->path = strdup(path); |
1178 | if (!alloc->path) | |
1179 | return -ENOMEM; | |
83096483 LP |
1180 | } |
1181 | ||
acb5b834 | 1182 | r = ordered_hashmap_ensure_put(&ctx->will_process, &string_hash_ops, alloc->name, alloc); |
83096483 | 1183 | if (r < 0) |
acb5b834 ZJS |
1184 | return r; |
1185 | i = TAKE_PTR(alloc); | |
83096483 | 1186 | |
0ec0deaa LP |
1187 | if (ret) |
1188 | *ret = i; | |
19539807 | 1189 | return 1; |
83096483 LP |
1190 | } |
1191 | ||
a7724589 ZJS |
1192 | static int config_parse_alias( |
1193 | const char *unit, | |
1194 | const char *filename, | |
1195 | unsigned line, | |
1196 | const char *section, | |
1197 | unsigned section_line, | |
1198 | const char *lvalue, | |
1199 | int ltype, | |
1200 | const char *rvalue, | |
1201 | void *data, | |
1202 | void *userdata) { | |
1203 | ||
a7724589 ZJS |
1204 | UnitType type; |
1205 | ||
142468d8 | 1206 | assert(unit); |
a7724589 ZJS |
1207 | assert(filename); |
1208 | assert(lvalue); | |
1209 | assert(rvalue); | |
1210 | ||
142468d8 | 1211 | type = unit_name_to_type(unit); |
a7724589 ZJS |
1212 | if (!unit_type_may_alias(type)) |
1213 | return log_syntax(unit, LOG_WARNING, filename, line, 0, | |
3b8769bd | 1214 | "Alias= is not allowed for %s units, ignoring.", |
a7724589 ZJS |
1215 | unit_type_to_string(type)); |
1216 | ||
1217 | return config_parse_strv(unit, filename, line, section, section_line, | |
1218 | lvalue, ltype, rvalue, data, userdata); | |
1219 | } | |
1220 | ||
d54c4993 LP |
1221 | static int config_parse_also( |
1222 | const char *unit, | |
1223 | const char *filename, | |
1224 | unsigned line, | |
1225 | const char *section, | |
1226 | unsigned section_line, | |
1227 | const char *lvalue, | |
1228 | int ltype, | |
1229 | const char *rvalue, | |
1230 | void *data, | |
1231 | void *userdata) { | |
83096483 | 1232 | |
0047d54d | 1233 | InstallInfo *info = ASSERT_PTR(userdata); |
4a84db4c | 1234 | InstallContext *ctx = ASSERT_PTR(data); |
0ec0deaa | 1235 | int r; |
83096483 | 1236 | |
142468d8 | 1237 | assert(unit); |
83096483 LP |
1238 | assert(filename); |
1239 | assert(lvalue); | |
1240 | assert(rvalue); | |
1241 | ||
0ec0deaa | 1242 | for (;;) { |
a6612e65 | 1243 | _cleanup_free_ char *word = NULL, *printed = NULL; |
03da6513 | 1244 | |
0ec0deaa LP |
1245 | r = extract_first_word(&rvalue, &word, NULL, 0); |
1246 | if (r < 0) | |
1247 | return r; | |
03da6513 SS |
1248 | if (r == 0) |
1249 | break; | |
83096483 | 1250 | |
38e8a6c7 | 1251 | r = install_name_printf(ctx->scope, info, word, &printed); |
d9e5e694 | 1252 | if (r < 0) |
6ec4c852 ZJS |
1253 | return log_syntax(unit, LOG_WARNING, filename, line, r, |
1254 | "Failed to resolve unit name in Also=\"%s\": %m", word); | |
aedd4012 | 1255 | |
4a84db4c | 1256 | r = install_info_add(ctx, printed, NULL, info->root, /* auxiliary= */ true, NULL); |
d9e5e694 | 1257 | if (r < 0) |
83096483 | 1258 | return r; |
aedd4012 | 1259 | |
a6612e65 | 1260 | r = strv_push(&info->also, printed); |
aedd4012 JS |
1261 | if (r < 0) |
1262 | return r; | |
0ec0deaa | 1263 | |
a6612e65 | 1264 | printed = NULL; |
83096483 LP |
1265 | } |
1266 | ||
1267 | return 0; | |
1268 | } | |
1269 | ||
d54c4993 LP |
1270 | static int config_parse_default_instance( |
1271 | const char *unit, | |
1272 | const char *filename, | |
1273 | unsigned line, | |
1274 | const char *section, | |
1275 | unsigned section_line, | |
1276 | const char *lvalue, | |
1277 | int ltype, | |
1278 | const char *rvalue, | |
1279 | void *data, | |
1280 | void *userdata) { | |
1281 | ||
172e9cc3 | 1282 | InstallContext *ctx = ASSERT_PTR(data); |
0047d54d | 1283 | InstallInfo *info = ASSERT_PTR(userdata); |
d7604756 | 1284 | _cleanup_free_ char *printed = NULL; |
d54c4993 LP |
1285 | int r; |
1286 | ||
142468d8 | 1287 | assert(unit); |
d54c4993 LP |
1288 | assert(filename); |
1289 | assert(lvalue); | |
1290 | assert(rvalue); | |
1291 | ||
142468d8 | 1292 | if (unit_name_is_valid(unit, UNIT_NAME_INSTANCE)) |
6597fa61 ZJS |
1293 | /* When enabling an instance, we might be using a template unit file, |
1294 | * but we should ignore DefaultInstance silently. */ | |
1295 | return 0; | |
142468d8 | 1296 | if (!unit_name_is_valid(unit, UNIT_NAME_TEMPLATE)) |
6597fa61 | 1297 | return log_syntax(unit, LOG_WARNING, filename, line, 0, |
10d67460 | 1298 | "DefaultInstance= only makes sense for template units, ignoring."); |
6597fa61 | 1299 | |
38e8a6c7 | 1300 | r = install_name_printf(ctx->scope, info, rvalue, &printed); |
d54c4993 | 1301 | if (r < 0) |
6ec4c852 ZJS |
1302 | return log_syntax(unit, LOG_WARNING, filename, line, r, |
1303 | "Failed to resolve instance name in DefaultInstance=\"%s\": %m", rvalue); | |
d54c4993 | 1304 | |
6ec4c852 ZJS |
1305 | if (isempty(printed)) |
1306 | printed = mfree(printed); | |
b5395600 | 1307 | |
6ec4c852 | 1308 | if (printed && !unit_instance_is_valid(printed)) |
e5171296 ZJS |
1309 | return log_syntax(unit, LOG_WARNING, filename, line, SYNTHETIC_ERRNO(EINVAL), |
1310 | "Invalid DefaultInstance= value \"%s\".", printed); | |
d54c4993 | 1311 | |
4a84db4c | 1312 | return free_and_replace(info->default_instance, printed); |
d54c4993 LP |
1313 | } |
1314 | ||
83096483 | 1315 | static int unit_file_load( |
4a84db4c | 1316 | InstallContext *ctx, |
0047d54d | 1317 | InstallInfo *info, |
83096483 | 1318 | const char *path, |
d04a9386 | 1319 | const char *root_dir, |
0ec0deaa | 1320 | SearchFlags flags) { |
83096483 | 1321 | |
f975e971 | 1322 | const ConfigTableItem items[] = { |
a7724589 | 1323 | { "Install", "Alias", config_parse_alias, 0, &info->aliases }, |
d54c4993 LP |
1324 | { "Install", "WantedBy", config_parse_strv, 0, &info->wanted_by }, |
1325 | { "Install", "RequiredBy", config_parse_strv, 0, &info->required_by }, | |
1326 | { "Install", "DefaultInstance", config_parse_default_instance, 0, info }, | |
4a84db4c | 1327 | { "Install", "Also", config_parse_also, 0, ctx }, |
d54c4993 | 1328 | {} |
83096483 LP |
1329 | }; |
1330 | ||
133e5b36 | 1331 | UnitType type; |
7fd1b19b | 1332 | _cleanup_fclose_ FILE *f = NULL; |
0ec0deaa LP |
1333 | _cleanup_close_ int fd = -1; |
1334 | struct stat st; | |
1335 | int r; | |
83096483 | 1336 | |
83096483 LP |
1337 | assert(info); |
1338 | assert(path); | |
1339 | ||
d04a9386 LP |
1340 | if (!(flags & SEARCH_DROPIN)) { |
1341 | /* Loading or checking for the main unit file… */ | |
133e5b36 | 1342 | |
d04a9386 LP |
1343 | type = unit_name_to_type(info->name); |
1344 | if (type < 0) | |
1345 | return -EINVAL; | |
baaa35ad ZJS |
1346 | if (unit_name_is_valid(info->name, UNIT_NAME_TEMPLATE|UNIT_NAME_INSTANCE) && !unit_type_may_template(type)) |
1347 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
bce84e10 | 1348 | "%s: unit type %s cannot be templated, ignoring.", path, unit_type_to_string(type)); |
d04a9386 LP |
1349 | |
1350 | if (!(flags & SEARCH_LOAD)) { | |
4276749d | 1351 | if (lstat(path, &st) < 0) |
d04a9386 LP |
1352 | return -errno; |
1353 | ||
1354 | if (null_or_empty(&st)) | |
91810c8f | 1355 | info->install_mode = INSTALL_MODE_MASKED; |
d04a9386 | 1356 | else if (S_ISREG(st.st_mode)) |
91810c8f | 1357 | info->install_mode = INSTALL_MODE_REGULAR; |
d04a9386 LP |
1358 | else if (S_ISLNK(st.st_mode)) |
1359 | return -ELOOP; | |
1360 | else if (S_ISDIR(st.st_mode)) | |
1361 | return -EISDIR; | |
1362 | else | |
1363 | return -ENOTTY; | |
1364 | ||
1365 | return 0; | |
1366 | } | |
1367 | ||
1368 | fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW); | |
1369 | if (fd < 0) | |
d25e100b | 1370 | return -errno; |
d04a9386 LP |
1371 | } else { |
1372 | /* 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 | 1373 | |
d04a9386 LP |
1374 | if (!(flags & SEARCH_LOAD)) |
1375 | return 0; | |
0ec0deaa | 1376 | |
d04a9386 LP |
1377 | fd = chase_symlinks_and_open(path, root_dir, 0, O_RDONLY|O_CLOEXEC|O_NOCTTY, NULL); |
1378 | if (fd < 0) | |
1379 | return fd; | |
e94937df LN |
1380 | } |
1381 | ||
0ec0deaa LP |
1382 | if (fstat(fd, &st) < 0) |
1383 | return -errno; | |
d04a9386 | 1384 | |
0ec0deaa | 1385 | if (null_or_empty(&st)) { |
d04a9386 | 1386 | if ((flags & SEARCH_DROPIN) == 0) |
91810c8f | 1387 | info->install_mode = INSTALL_MODE_MASKED; |
d04a9386 | 1388 | |
0ec0deaa LP |
1389 | return 0; |
1390 | } | |
3cc44114 LP |
1391 | |
1392 | r = stat_verify_regular(&st); | |
1393 | if (r < 0) | |
1394 | return r; | |
83096483 | 1395 | |
4fa744a3 | 1396 | f = take_fdopen(&fd, "r"); |
0ec0deaa LP |
1397 | if (!f) |
1398 | return -errno; | |
83096483 | 1399 | |
4a84db4c ZJS |
1400 | /* ctx is only needed if we actually load the file (it's referenced from items[] btw, in case you wonder.) */ |
1401 | assert(ctx); | |
d04a9386 | 1402 | |
142468d8 | 1403 | r = config_parse(info->name, path, f, |
f4331d0d ZJS |
1404 | "Install\0" |
1405 | "-Unit\0" | |
1406 | "-Automount\0" | |
1407 | "-Device\0" | |
1408 | "-Mount\0" | |
1409 | "-Path\0" | |
1410 | "-Scope\0" | |
1411 | "-Service\0" | |
1412 | "-Slice\0" | |
1413 | "-Socket\0" | |
1414 | "-Swap\0" | |
1415 | "-Target\0" | |
1416 | "-Timer\0", | |
36f822c4 | 1417 | config_item_table_lookup, items, |
7ade8982 | 1418 | 0, info, |
4f9ff96a | 1419 | NULL); |
83096483 | 1420 | if (r < 0) |
e75a26d0 | 1421 | return log_debug_errno(r, "Failed to parse \"%s\": %m", info->name); |
83096483 | 1422 | |
d04a9386 | 1423 | if ((flags & SEARCH_DROPIN) == 0) |
91810c8f | 1424 | info->install_mode = INSTALL_MODE_REGULAR; |
aedd4012 | 1425 | |
78d54bd4 | 1426 | return |
693eb9a2 LP |
1427 | (int) strv_length(info->aliases) + |
1428 | (int) strv_length(info->wanted_by) + | |
1429 | (int) strv_length(info->required_by); | |
83096483 LP |
1430 | } |
1431 | ||
0ec0deaa | 1432 | static int unit_file_load_or_readlink( |
4a84db4c | 1433 | InstallContext *ctx, |
0047d54d | 1434 | InstallInfo *info, |
0ec0deaa | 1435 | const char *path, |
c3e7fba0 | 1436 | const LookupPaths *lp, |
0ec0deaa | 1437 | SearchFlags flags) { |
0ec0deaa LP |
1438 | int r; |
1439 | ||
4a84db4c | 1440 | r = unit_file_load(ctx, info, path, lp->root_dir, flags); |
d04a9386 | 1441 | if (r != -ELOOP || (flags & SEARCH_DROPIN)) |
0ec0deaa LP |
1442 | return r; |
1443 | ||
047d37dc ZJS |
1444 | /* This is a symlink, let's read and verify it. */ |
1445 | r = unit_file_resolve_symlink(lp->root_dir, lp->search_path, | |
1446 | NULL, AT_FDCWD, path, | |
1447 | true, &info->symlink_target); | |
1448 | if (r < 0) | |
1449 | return r; | |
48ed75ad | 1450 | bool outside_search_path = r > 0; |
4276749d | 1451 | |
047d37dc ZJS |
1452 | r = null_or_empty_path_with_root(info->symlink_target, lp->root_dir); |
1453 | if (r < 0 && r != -ENOENT) | |
1454 | return log_debug_errno(r, "Failed to stat %s: %m", info->symlink_target); | |
1455 | if (r > 0) | |
91810c8f | 1456 | info->install_mode = INSTALL_MODE_MASKED; |
48ed75ad | 1457 | else if (outside_search_path) |
91810c8f | 1458 | info->install_mode = INSTALL_MODE_LINKED; |
047d37dc | 1459 | else |
91810c8f | 1460 | info->install_mode = INSTALL_MODE_ALIAS; |
0ec0deaa LP |
1461 | |
1462 | return 0; | |
1463 | } | |
1464 | ||
83096483 | 1465 | static int unit_file_search( |
4a84db4c | 1466 | InstallContext *ctx, |
0047d54d | 1467 | InstallInfo *info, |
c3e7fba0 | 1468 | const LookupPaths *lp, |
0ec0deaa | 1469 | SearchFlags flags) { |
83096483 | 1470 | |
d04a9386 LP |
1471 | const char *dropin_dir_name = NULL, *dropin_template_dir_name = NULL; |
1472 | _cleanup_strv_free_ char **dirs = NULL, **files = NULL; | |
64f9280e | 1473 | _cleanup_free_ char *template = NULL; |
142468d8 | 1474 | bool found_unit = false; |
d04a9386 | 1475 | int r, result; |
83096483 | 1476 | |
83096483 | 1477 | assert(info); |
c3e7fba0 | 1478 | assert(lp); |
83096483 | 1479 | |
0ec0deaa | 1480 | /* Was this unit already loaded? */ |
91810c8f | 1481 | if (info->install_mode != _INSTALL_MODE_INVALID) |
0ec0deaa LP |
1482 | return 0; |
1483 | ||
278fa575 | 1484 | if (info->path) |
4a84db4c | 1485 | return unit_file_load_or_readlink(ctx, info, info->path, lp, flags); |
83096483 LP |
1486 | |
1487 | assert(info->name); | |
1488 | ||
142468d8 JL |
1489 | if (unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { |
1490 | r = unit_name_template(info->name, &template); | |
1491 | if (r < 0) | |
1492 | return r; | |
1493 | } | |
1494 | ||
c3e7fba0 | 1495 | STRV_FOREACH(p, lp->search_path) { |
e50bd775 | 1496 | _cleanup_free_ char *path = NULL; |
83096483 | 1497 | |
657ee2d8 | 1498 | path = path_join(*p, info->name); |
83096483 LP |
1499 | if (!path) |
1500 | return -ENOMEM; | |
1501 | ||
4a84db4c | 1502 | r = unit_file_load_or_readlink(ctx, info, path, lp, flags); |
0155928c | 1503 | if (r >= 0) { |
ae2a15bc | 1504 | info->path = TAKE_PTR(path); |
142468d8 JL |
1505 | result = r; |
1506 | found_unit = true; | |
1507 | break; | |
a1feacf7 | 1508 | } else if (!IN_SET(r, -ENOENT, -ENOTDIR, -EACCES)) |
0155928c | 1509 | return r; |
e50bd775 | 1510 | } |
62b00233 | 1511 | |
142468d8 JL |
1512 | if (!found_unit && template) { |
1513 | ||
e50bd775 LP |
1514 | /* Unit file doesn't exist, however instance |
1515 | * enablement was requested. We will check if it is | |
1516 | * possible to load template unit file. */ | |
29283ea4 | 1517 | |
c3e7fba0 | 1518 | STRV_FOREACH(p, lp->search_path) { |
e50bd775 LP |
1519 | _cleanup_free_ char *path = NULL; |
1520 | ||
657ee2d8 | 1521 | path = path_join(*p, template); |
62b00233 ZJS |
1522 | if (!path) |
1523 | return -ENOMEM; | |
29283ea4 | 1524 | |
4a84db4c | 1525 | r = unit_file_load_or_readlink(ctx, info, path, lp, flags); |
0155928c | 1526 | if (r >= 0) { |
ae2a15bc | 1527 | info->path = TAKE_PTR(path); |
142468d8 JL |
1528 | result = r; |
1529 | found_unit = true; | |
1530 | break; | |
a1feacf7 | 1531 | } else if (!IN_SET(r, -ENOENT, -ENOTDIR, -EACCES)) |
0155928c | 1532 | return r; |
29283ea4 | 1533 | } |
83096483 LP |
1534 | } |
1535 | ||
baaa35ad ZJS |
1536 | if (!found_unit) |
1537 | return log_debug_errno(SYNTHETIC_ERRNO(ENOENT), | |
1538 | "Cannot find unit %s%s%s.", | |
1539 | info->name, template ? " or " : "", strempty(template)); | |
142468d8 | 1540 | |
91810c8f | 1541 | if (info->install_mode == INSTALL_MODE_MASKED) |
9639b175 FB |
1542 | return result; |
1543 | ||
142468d8 JL |
1544 | /* Search for drop-in directories */ |
1545 | ||
1546 | dropin_dir_name = strjoina(info->name, ".d"); | |
c3e7fba0 | 1547 | STRV_FOREACH(p, lp->search_path) { |
142468d8 JL |
1548 | char *path; |
1549 | ||
62a85ee0 | 1550 | path = path_join(*p, dropin_dir_name); |
142468d8 JL |
1551 | if (!path) |
1552 | return -ENOMEM; | |
1553 | ||
1554 | r = strv_consume(&dirs, path); | |
1555 | if (r < 0) | |
1556 | return r; | |
1557 | } | |
1558 | ||
1559 | if (template) { | |
1560 | dropin_template_dir_name = strjoina(template, ".d"); | |
c3e7fba0 | 1561 | STRV_FOREACH(p, lp->search_path) { |
142468d8 JL |
1562 | char *path; |
1563 | ||
62a85ee0 | 1564 | path = path_join(*p, dropin_template_dir_name); |
142468d8 JL |
1565 | if (!path) |
1566 | return -ENOMEM; | |
1567 | ||
1568 | r = strv_consume(&dirs, path); | |
1569 | if (r < 0) | |
1570 | return r; | |
1571 | } | |
1572 | } | |
1573 | ||
1574 | /* Load drop-in conf files */ | |
1575 | ||
1576 | r = conf_files_list_strv(&files, ".conf", NULL, 0, (const char**) dirs); | |
1577 | if (r < 0) | |
1578 | return log_debug_errno(r, "Failed to get list of conf files: %m"); | |
1579 | ||
1580 | STRV_FOREACH(p, files) { | |
4a84db4c | 1581 | r = unit_file_load_or_readlink(ctx, info, *p, lp, flags | SEARCH_DROPIN); |
142468d8 | 1582 | if (r < 0) |
e75a26d0 | 1583 | return log_debug_errno(r, "Failed to load conf file \"%s\": %m", *p); |
142468d8 JL |
1584 | } |
1585 | ||
1586 | return result; | |
83096483 LP |
1587 | } |
1588 | ||
0ec0deaa | 1589 | static int install_info_follow( |
4a84db4c | 1590 | InstallContext *ctx, |
0047d54d | 1591 | InstallInfo *info, |
c3e7fba0 | 1592 | const LookupPaths *lp, |
9f6cbcf5 LP |
1593 | SearchFlags flags, |
1594 | bool ignore_different_name) { | |
0ec0deaa | 1595 | |
4a84db4c ZJS |
1596 | assert(ctx); |
1597 | assert(info); | |
0ec0deaa | 1598 | |
91810c8f | 1599 | if (!IN_SET(info->install_mode, INSTALL_MODE_ALIAS, INSTALL_MODE_LINKED)) |
0ec0deaa | 1600 | return -EINVAL; |
4a84db4c | 1601 | if (!info->symlink_target) |
0ec0deaa LP |
1602 | return -EINVAL; |
1603 | ||
4f5c2485 | 1604 | /* If the basename doesn't match, the caller should add a complete new entry for this. */ |
0ec0deaa | 1605 | |
4a84db4c | 1606 | if (!ignore_different_name && !streq(basename(info->symlink_target), info->name)) |
0ec0deaa LP |
1607 | return -EXDEV; |
1608 | ||
4a84db4c | 1609 | free_and_replace(info->path, info->symlink_target); |
91810c8f | 1610 | info->install_mode = _INSTALL_MODE_INVALID; |
0ec0deaa | 1611 | |
4a84db4c | 1612 | return unit_file_load_or_readlink(ctx, info, info->path, lp, flags); |
0ec0deaa LP |
1613 | } |
1614 | ||
64f9280e | 1615 | /** |
ff56349d ZJS |
1616 | * Search for the unit file. If the unit name is a symlink, follow the symlink to the |
1617 | * target, maybe more than once. Propagate the instance name if present. | |
64f9280e | 1618 | */ |
0ec0deaa | 1619 | static int install_info_traverse( |
4a84db4c | 1620 | InstallContext *ctx, |
c3e7fba0 | 1621 | const LookupPaths *lp, |
0047d54d | 1622 | InstallInfo *start, |
0ec0deaa | 1623 | SearchFlags flags, |
0047d54d | 1624 | InstallInfo **ret) { |
83096483 | 1625 | |
0047d54d | 1626 | InstallInfo *i; |
0ec0deaa | 1627 | unsigned k = 0; |
83096483 LP |
1628 | int r; |
1629 | ||
c3e7fba0 | 1630 | assert(lp); |
0ec0deaa | 1631 | assert(start); |
4a84db4c | 1632 | assert(ctx); |
83096483 | 1633 | |
4a84db4c | 1634 | r = unit_file_search(ctx, start, lp, flags); |
83096483 LP |
1635 | if (r < 0) |
1636 | return r; | |
1637 | ||
0ec0deaa | 1638 | i = start; |
91810c8f | 1639 | while (IN_SET(i->install_mode, INSTALL_MODE_ALIAS, INSTALL_MODE_LINKED)) { |
0ec0deaa | 1640 | /* Follow the symlink */ |
83096483 | 1641 | |
0ec0deaa LP |
1642 | if (++k > UNIT_FILE_FOLLOW_SYMLINK_MAX) |
1643 | return -ELOOP; | |
83096483 | 1644 | |
e1c5c2b0 | 1645 | if (!(flags & SEARCH_FOLLOW_CONFIG_SYMLINKS)) { |
c3e7fba0 | 1646 | r = path_is_config(lp, i->path, true); |
e1c5c2b0 LP |
1647 | if (r < 0) |
1648 | return r; | |
1649 | if (r > 0) | |
1650 | return -ELOOP; | |
1651 | } | |
83096483 | 1652 | |
48eadb9d ZJS |
1653 | r = install_info_follow(ctx, i, lp, flags, |
1654 | /* If linked, don't look at the target name */ | |
91810c8f | 1655 | /* ignore_different_name= */ i->install_mode == INSTALL_MODE_LINKED); |
0155928c | 1656 | if (r == -EXDEV) { |
0ec0deaa LP |
1657 | _cleanup_free_ char *buffer = NULL; |
1658 | const char *bn; | |
83096483 | 1659 | |
4f5c2485 | 1660 | /* Target is an alias, create a new install info object and continue with that. */ |
83096483 | 1661 | |
0ec0deaa | 1662 | bn = basename(i->symlink_target); |
83096483 | 1663 | |
0ec0deaa LP |
1664 | if (unit_name_is_valid(i->name, UNIT_NAME_INSTANCE) && |
1665 | unit_name_is_valid(bn, UNIT_NAME_TEMPLATE)) { | |
83096483 | 1666 | |
0ec0deaa LP |
1667 | _cleanup_free_ char *instance = NULL; |
1668 | ||
1669 | r = unit_name_to_instance(i->name, &instance); | |
1670 | if (r < 0) | |
1671 | return r; | |
1672 | ||
1673 | r = unit_name_replace_instance(bn, instance, &buffer); | |
1674 | if (r < 0) | |
1675 | return r; | |
1676 | ||
9f6cbcf5 LP |
1677 | if (streq(buffer, i->name)) { |
1678 | ||
4f5c2485 ZJS |
1679 | /* We filled in the instance, and the target stayed the same? If so, |
1680 | * then let's honour the link as it is. */ | |
9f6cbcf5 | 1681 | |
4a84db4c | 1682 | r = install_info_follow(ctx, i, lp, flags, true); |
9f6cbcf5 LP |
1683 | if (r < 0) |
1684 | return r; | |
1685 | ||
1686 | continue; | |
1687 | } | |
1688 | ||
0ec0deaa LP |
1689 | bn = buffer; |
1690 | } | |
1691 | ||
4a84db4c | 1692 | r = install_info_add(ctx, bn, NULL, lp->root_dir, /* auxiliary= */ false, &i); |
0ec0deaa LP |
1693 | if (r < 0) |
1694 | return r; | |
1695 | ||
0155928c | 1696 | /* Try again, with the new target we found. */ |
4a84db4c | 1697 | r = unit_file_search(ctx, i, lp, flags); |
893275df ZJS |
1698 | if (r == -ENOENT) |
1699 | /* Translate error code to highlight this specific case */ | |
1700 | return -ENOLINK; | |
0ec0deaa LP |
1701 | } |
1702 | ||
0155928c ZJS |
1703 | if (r < 0) |
1704 | return r; | |
83096483 LP |
1705 | } |
1706 | ||
0ec0deaa LP |
1707 | if (ret) |
1708 | *ret = i; | |
83096483 | 1709 | |
0ec0deaa LP |
1710 | return 0; |
1711 | } | |
83096483 | 1712 | |
ff56349d ZJS |
1713 | /** |
1714 | * Call install_info_add() with name_or_path as the path (if name_or_path starts with "/") | |
1715 | * or the name (otherwise). root_dir is prepended to the path. | |
1716 | */ | |
401017e0 | 1717 | static int install_info_add_auto( |
4a84db4c | 1718 | InstallContext *ctx, |
c3e7fba0 | 1719 | const LookupPaths *lp, |
401017e0 | 1720 | const char *name_or_path, |
0047d54d | 1721 | InstallInfo **ret) { |
401017e0 | 1722 | |
4a84db4c | 1723 | assert(ctx); |
401017e0 LP |
1724 | assert(name_or_path); |
1725 | ||
1726 | if (path_is_absolute(name_or_path)) { | |
1727 | const char *pp; | |
1728 | ||
c3e7fba0 | 1729 | pp = prefix_roota(lp->root_dir, name_or_path); |
401017e0 | 1730 | |
4a84db4c | 1731 | return install_info_add(ctx, NULL, pp, lp->root_dir, /* auxiliary= */ false, ret); |
401017e0 | 1732 | } else |
4a84db4c | 1733 | return install_info_add(ctx, name_or_path, NULL, lp->root_dir, /* auxiliary= */ false, ret); |
401017e0 LP |
1734 | } |
1735 | ||
0ec0deaa | 1736 | static int install_info_discover( |
4a84db4c | 1737 | InstallContext *ctx, |
c3e7fba0 | 1738 | const LookupPaths *lp, |
0f87041f | 1739 | const char *name_or_path, |
0ec0deaa | 1740 | SearchFlags flags, |
0047d54d | 1741 | InstallInfo **ret, |
cd44ec5a | 1742 | InstallChange **changes, |
da6053d0 | 1743 | size_t *n_changes) { |
83096483 | 1744 | |
0047d54d | 1745 | InstallInfo *info; |
0ec0deaa | 1746 | int r; |
83096483 | 1747 | |
4a84db4c | 1748 | assert(ctx); |
c3e7fba0 | 1749 | assert(lp); |
0f87041f | 1750 | assert(name_or_path); |
0ec0deaa | 1751 | |
0f87041f | 1752 | r = install_info_add_auto(ctx, lp, name_or_path, &info); |
59108fbe | 1753 | if (r >= 0) |
4a84db4c | 1754 | r = install_info_traverse(ctx, lp, info, flags, ret); |
83096483 | 1755 | |
59108fbe | 1756 | if (r < 0) |
cd44ec5a | 1757 | install_changes_add(changes, n_changes, r, name_or_path, NULL); |
59108fbe | 1758 | return r; |
83096483 LP |
1759 | } |
1760 | ||
1e475a0a | 1761 | static int install_info_discover_and_check( |
4a84db4c ZJS |
1762 | InstallContext *ctx, |
1763 | const LookupPaths *lp, | |
0f87041f | 1764 | const char *name_or_path, |
4a84db4c | 1765 | SearchFlags flags, |
0047d54d | 1766 | InstallInfo **ret, |
cd44ec5a | 1767 | InstallChange **changes, |
4a84db4c | 1768 | size_t *n_changes) { |
1e475a0a RB |
1769 | |
1770 | int r; | |
1771 | ||
0f87041f | 1772 | r = install_info_discover(ctx, lp, name_or_path, flags, ret, changes, n_changes); |
1e475a0a RB |
1773 | if (r < 0) |
1774 | return r; | |
1775 | ||
c3e7fba0 | 1776 | return install_info_may_process(ret ? *ret : NULL, lp, changes, n_changes); |
1e475a0a RB |
1777 | } |
1778 | ||
cbfdbffb | 1779 | int unit_file_verify_alias( |
0047d54d | 1780 | const InstallInfo *info, |
cbfdbffb ZJS |
1781 | const char *dst, |
1782 | char **ret_dst, | |
cd44ec5a | 1783 | InstallChange **changes, |
cbfdbffb ZJS |
1784 | size_t *n_changes) { |
1785 | ||
3f57bc22 | 1786 | _cleanup_free_ char *dst_updated = NULL; |
aa0f357f ZJS |
1787 | int r; |
1788 | ||
3f57bc22 ZJS |
1789 | /* Verify that dst is a valid either a valid alias or a valid .wants/.requires symlink for the target |
1790 | * unit *i. Return negative on error or if not compatible, zero on success. | |
1791 | * | |
1792 | * ret_dst is set in cases where "instance propagation" happens, i.e. when the instance part is | |
1793 | * inserted into dst. It is not normally set, even on success, so that the caller can easily | |
162392b7 | 1794 | * distinguish the case where instance propagation occurred. |
f663e646 ZJS |
1795 | * |
1796 | * Returns: | |
1797 | * -EXDEV when the alias doesn't match the unit, | |
1798 | * -EUCLEAN when the name is invalid, | |
1799 | * -ELOOP when the alias it to the unit itself. | |
3f57bc22 ZJS |
1800 | */ |
1801 | ||
1802 | const char *path_alias = strrchr(dst, '/'); | |
1803 | if (path_alias) { | |
1804 | /* This branch covers legacy Alias= function of creating .wants and .requires symlinks. */ | |
1805 | _cleanup_free_ char *dir = NULL; | |
1bf15585 | 1806 | char *p; |
aa0f357f | 1807 | |
3f57bc22 | 1808 | path_alias ++; /* skip over slash */ |
aa0f357f | 1809 | |
45519d13 LP |
1810 | r = path_extract_directory(dst, &dir); |
1811 | if (r < 0) | |
1812 | return log_error_errno(r, "Failed to extract parent directory from '%s': %m", dst); | |
aa0f357f | 1813 | |
1bf15585 ZJS |
1814 | p = endswith(dir, ".wants"); |
1815 | if (!p) | |
1816 | p = endswith(dir, ".requires"); | |
cbfdbffb | 1817 | if (!p) { |
cd44ec5a | 1818 | install_changes_add(changes, n_changes, -EXDEV, dst, NULL); |
cbfdbffb ZJS |
1819 | return log_debug_errno(SYNTHETIC_ERRNO(EXDEV), "Invalid path \"%s\" in alias.", dir); |
1820 | } | |
1821 | ||
1bf15585 ZJS |
1822 | *p = '\0'; /* dir should now be a unit name */ |
1823 | ||
73ce91a0 | 1824 | UnitNameFlags type = unit_name_classify(dir); |
cbfdbffb | 1825 | if (type < 0) { |
cd44ec5a | 1826 | install_changes_add(changes, n_changes, -EXDEV, dst, NULL); |
cbfdbffb ZJS |
1827 | return log_debug_errno(SYNTHETIC_ERRNO(EXDEV), |
1828 | "Invalid unit name component \"%s\" in alias.", dir); | |
1829 | } | |
1bf15585 | 1830 | |
73ce91a0 | 1831 | const bool instance_propagation = type == UNIT_NAME_TEMPLATE; |
3f57bc22 ZJS |
1832 | |
1833 | /* That's the name we want to use for verification. */ | |
4a84db4c | 1834 | r = unit_symlink_name_compatible(path_alias, info->name, instance_propagation); |
aa0f357f | 1835 | if (r < 0) |
3f57bc22 | 1836 | return log_error_errno(r, "Failed to verify alias validity: %m"); |
cbfdbffb | 1837 | if (r == 0) { |
cd44ec5a | 1838 | install_changes_add(changes, n_changes, -EXDEV, dst, info->name); |
cbfdbffb ZJS |
1839 | return log_debug_errno(SYNTHETIC_ERRNO(EXDEV), |
1840 | "Invalid unit \"%s\" symlink \"%s\".", | |
1841 | info->name, dst); | |
1842 | } | |
3f57bc22 ZJS |
1843 | |
1844 | } else { | |
1845 | /* If the symlink target has an instance set and the symlink source doesn't, we "propagate | |
1846 | * the instance", i.e. instantiate the symlink source with the target instance. */ | |
1847 | if (unit_name_is_valid(dst, UNIT_NAME_TEMPLATE)) { | |
1848 | _cleanup_free_ char *inst = NULL; | |
1849 | ||
4a84db4c | 1850 | UnitNameFlags type = unit_name_to_instance(info->name, &inst); |
cbfdbffb | 1851 | if (type < 0) { |
cd44ec5a | 1852 | install_changes_add(changes, n_changes, -EUCLEAN, info->name, NULL); |
cbfdbffb ZJS |
1853 | return log_debug_errno(type, "Failed to extract instance name from \"%s\": %m", info->name); |
1854 | } | |
3f57bc22 | 1855 | |
73ce91a0 | 1856 | if (type == UNIT_NAME_INSTANCE) { |
3f57bc22 ZJS |
1857 | r = unit_name_replace_instance(dst, inst, &dst_updated); |
1858 | if (r < 0) | |
1859 | return log_error_errno(r, "Failed to build unit name from %s+%s: %m", | |
1860 | dst, inst); | |
1861 | } | |
1862 | } | |
aa0f357f | 1863 | |
cbfdbffb | 1864 | r = unit_validate_alias_symlink_or_warn(LOG_DEBUG, dst_updated ?: dst, info->name); |
f663e646 ZJS |
1865 | if (r == -ELOOP) /* -ELOOP means self-alias, which we (quietly) ignore */ |
1866 | return r; | |
94e7298d ZJS |
1867 | if (r < 0) |
1868 | return install_changes_add(changes, n_changes, | |
1869 | r == -EINVAL ? -EXDEV : r, | |
1870 | dst_updated ?: dst, | |
1871 | info->name); | |
aa0f357f ZJS |
1872 | } |
1873 | ||
3f57bc22 | 1874 | *ret_dst = TAKE_PTR(dst_updated); |
aa0f357f ZJS |
1875 | return 0; |
1876 | } | |
1877 | ||
83096483 | 1878 | static int install_info_symlink_alias( |
b380b643 | 1879 | LookupScope scope, |
0047d54d | 1880 | InstallInfo *info, |
c3e7fba0 | 1881 | const LookupPaths *lp, |
83096483 LP |
1882 | const char *config_path, |
1883 | bool force, | |
cd44ec5a | 1884 | InstallChange **changes, |
da6053d0 | 1885 | size_t *n_changes) { |
83096483 | 1886 | |
83096483 LP |
1887 | int r = 0, q; |
1888 | ||
4a84db4c | 1889 | assert(info); |
c3e7fba0 | 1890 | assert(lp); |
83096483 LP |
1891 | assert(config_path); |
1892 | ||
4a84db4c | 1893 | STRV_FOREACH(s, info->aliases) { |
3f57bc22 | 1894 | _cleanup_free_ char *alias_path = NULL, *dst = NULL, *dst_updated = NULL; |
83096483 | 1895 | |
38e8a6c7 | 1896 | q = install_name_printf(scope, info, *s, &dst); |
6ec4c852 | 1897 | if (q < 0) { |
cd44ec5a | 1898 | install_changes_add(changes, n_changes, q, *s, NULL); |
0d11db59 ZJS |
1899 | r = r < 0 ? r : q; |
1900 | continue; | |
6ec4c852 | 1901 | } |
83096483 | 1902 | |
cbfdbffb | 1903 | q = unit_file_verify_alias(info, dst, &dst_updated, changes, n_changes); |
f663e646 ZJS |
1904 | if (q == -ELOOP) |
1905 | continue; | |
0d11db59 ZJS |
1906 | if (q < 0) { |
1907 | r = r < 0 ? r : q; | |
aa0f357f | 1908 | continue; |
0d11db59 | 1909 | } |
3d0205f2 | 1910 | |
3f57bc22 | 1911 | alias_path = path_make_absolute(dst_updated ?: dst, config_path); |
83096483 LP |
1912 | if (!alias_path) |
1913 | return -ENOMEM; | |
1914 | ||
9aa3d6b4 | 1915 | q = create_symlink(lp, info->path, alias_path, force, changes, n_changes); |
0d11db59 | 1916 | r = r < 0 ? r : q; |
83096483 LP |
1917 | } |
1918 | ||
1919 | return r; | |
1920 | } | |
1921 | ||
1922 | static int install_info_symlink_wants( | |
b380b643 | 1923 | LookupScope scope, |
9b69770a | 1924 | UnitFileFlags file_flags, |
0047d54d | 1925 | InstallInfo *info, |
c3e7fba0 | 1926 | const LookupPaths *lp, |
83096483 | 1927 | const char *config_path, |
d54c4993 LP |
1928 | char **list, |
1929 | const char *suffix, | |
cd44ec5a | 1930 | InstallChange **changes, |
da6053d0 | 1931 | size_t *n_changes) { |
83096483 | 1932 | |
acb5b834 ZJS |
1933 | _cleanup_(install_info_clear) InstallInfo instance = { |
1934 | .install_mode = _INSTALL_MODE_INVALID, | |
1935 | }; | |
1936 | ||
b0ec372a | 1937 | UnitNameFlags valid_dst_type = UNIT_NAME_ANY; |
d54c4993 | 1938 | const char *n; |
83096483 LP |
1939 | int r = 0, q; |
1940 | ||
4a84db4c | 1941 | assert(info); |
c3e7fba0 | 1942 | assert(lp); |
83096483 LP |
1943 | assert(config_path); |
1944 | ||
047d91f9 ZJS |
1945 | if (strv_isempty(list)) |
1946 | return 0; | |
1947 | ||
4a84db4c | 1948 | if (unit_name_is_valid(info->name, UNIT_NAME_PLAIN | UNIT_NAME_INSTANCE)) |
b0ec372a | 1949 | /* Not a template unit. Use the name directly. */ |
4a84db4c | 1950 | n = info->name; |
b0ec372a | 1951 | |
4a84db4c | 1952 | else if (info->default_instance) { |
b0ec372a | 1953 | /* If this is a template, and we have a default instance, use it. */ |
e4086ae0 | 1954 | |
acb5b834 | 1955 | r = unit_name_replace_instance(info->name, info->default_instance, &instance.name); |
7410616c LP |
1956 | if (r < 0) |
1957 | return r; | |
83096483 | 1958 | |
c3e7fba0 | 1959 | r = unit_file_search(NULL, &instance, lp, SEARCH_FOLLOW_CONFIG_SYMLINKS); |
047d91f9 ZJS |
1960 | if (r < 0) |
1961 | return r; | |
1962 | ||
94e7298d ZJS |
1963 | if (instance.install_mode == INSTALL_MODE_MASKED) |
1964 | return install_changes_add(changes, n_changes, -ERFKILL, instance.path, NULL); | |
047d91f9 | 1965 | |
acb5b834 | 1966 | n = instance.name; |
b0ec372a ZJS |
1967 | |
1968 | } else { | |
1969 | /* We have a template, but no instance yet. When used with an instantiated unit, we will get | |
1970 | * the instance from that unit. Cannot be used with non-instance units. */ | |
1971 | ||
1972 | valid_dst_type = UNIT_NAME_INSTANCE | UNIT_NAME_TEMPLATE; | |
4a84db4c | 1973 | n = info->name; |
b0ec372a | 1974 | } |
78d54bd4 | 1975 | |
f5a0162d | 1976 | r = 0; |
d54c4993 | 1977 | STRV_FOREACH(s, list) { |
9aa3d6b4 | 1978 | _cleanup_free_ char *path = NULL, *dst = NULL; |
78d54bd4 | 1979 | |
38e8a6c7 | 1980 | q = install_name_printf(scope, info, *s, &dst); |
f5a0162d YW |
1981 | if (q < 0) { |
1982 | install_changes_add(changes, n_changes, q, *s, NULL); | |
1983 | if (r >= 0) | |
1984 | r = q; | |
1985 | } | |
7584d236 | 1986 | |
b0ec372a | 1987 | if (!unit_name_is_valid(dst, valid_dst_type)) { |
ad5fdd39 ZJS |
1988 | /* Generate a proper error here: EUCLEAN if the name is generally bad, EIDRM if the |
1989 | * template status doesn't match. If we are doing presets don't bother reporting the | |
1990 | * error. This also covers cases like 'systemctl preset serial-getty@.service', which | |
1991 | * has no DefaultInstance, so there is nothing we can do. At the same time, | |
1992 | * 'systemctl enable serial-getty@.service' should fail, the user should specify an | |
1993 | * instance like in 'systemctl enable serial-getty@ttyS0.service'. | |
1994 | */ | |
1995 | if (file_flags & UNIT_FILE_IGNORE_AUXILIARY_FAILURE) | |
1996 | continue; | |
1997 | ||
94e7298d | 1998 | if (unit_name_is_valid(dst, UNIT_NAME_ANY)) |
f5a0162d | 1999 | q = install_changes_add(changes, n_changes, -EIDRM, dst, n); |
94e7298d | 2000 | else |
f5a0162d YW |
2001 | q = install_changes_add(changes, n_changes, -EUCLEAN, dst, NULL); |
2002 | if (r >= 0) | |
2003 | r = q; | |
b0ec372a | 2004 | |
78d54bd4 LP |
2005 | continue; |
2006 | } | |
2007 | ||
9aa3d6b4 | 2008 | path = strjoin(config_path, "/", dst, suffix, n); |
d54c4993 | 2009 | if (!path) |
78d54bd4 LP |
2010 | return -ENOMEM; |
2011 | ||
9aa3d6b4 | 2012 | q = create_symlink(lp, info->path, path, true, changes, n_changes); |
f5a0162d | 2013 | if ((q < 0 && r >= 0) || r == 0) |
78d54bd4 | 2014 | r = q; |
8ae27441 | 2015 | |
f31f10a6 ZJS |
2016 | if (unit_file_exists(scope, lp, dst) == 0) { |
2017 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_DESTINATION_NOT_PRESENT, dst, info->path); | |
2018 | if (q < 0) | |
2019 | return q; | |
2020 | } | |
78d54bd4 LP |
2021 | } |
2022 | ||
2023 | return r; | |
2024 | } | |
2025 | ||
83096483 | 2026 | static int install_info_symlink_link( |
0047d54d | 2027 | InstallInfo *info, |
c3e7fba0 | 2028 | const LookupPaths *lp, |
83096483 LP |
2029 | const char *config_path, |
2030 | bool force, | |
cd44ec5a | 2031 | InstallChange **changes, |
da6053d0 | 2032 | size_t *n_changes) { |
83096483 | 2033 | |
7fd1b19b | 2034 | _cleanup_free_ char *path = NULL; |
1dacfd2a | 2035 | int r; |
83096483 | 2036 | |
4a84db4c | 2037 | assert(info); |
c3e7fba0 | 2038 | assert(lp); |
83096483 | 2039 | assert(config_path); |
4a84db4c | 2040 | assert(info->path); |
83096483 | 2041 | |
4a84db4c | 2042 | r = in_search_path(lp, info->path); |
fe4aede9 | 2043 | if (r < 0) |
83096483 | 2044 | return r; |
fe4aede9 ZJS |
2045 | if (r > 0) |
2046 | return 0; | |
83096483 | 2047 | |
4a84db4c | 2048 | path = path_join(config_path, info->name); |
1dacfd2a | 2049 | if (!path) |
83096483 LP |
2050 | return -ENOMEM; |
2051 | ||
4a84db4c | 2052 | return create_symlink(lp, info->path, path, force, changes, n_changes); |
83096483 LP |
2053 | } |
2054 | ||
2055 | static int install_info_apply( | |
b380b643 | 2056 | LookupScope scope, |
9b69770a | 2057 | UnitFileFlags file_flags, |
0047d54d | 2058 | InstallInfo *info, |
c3e7fba0 | 2059 | const LookupPaths *lp, |
83096483 | 2060 | const char *config_path, |
cd44ec5a | 2061 | InstallChange **changes, |
da6053d0 | 2062 | size_t *n_changes) { |
83096483 LP |
2063 | |
2064 | int r, q; | |
2065 | ||
4a84db4c | 2066 | assert(info); |
c3e7fba0 | 2067 | assert(lp); |
83096483 LP |
2068 | assert(config_path); |
2069 | ||
91810c8f | 2070 | if (info->install_mode != INSTALL_MODE_REGULAR) |
0ec0deaa LP |
2071 | return 0; |
2072 | ||
9b69770a ZJS |
2073 | bool force = file_flags & UNIT_FILE_FORCE; |
2074 | ||
20d68b3a ZJS |
2075 | r = install_info_symlink_link(info, lp, config_path, force, changes, n_changes); |
2076 | /* Do not count links to the unit file towards the "carries_install_info" count */ | |
2077 | if (r < 0) | |
2078 | /* If linking of the file failed, do not try to create other symlinks, | |
2079 | * because they might would pointing to a non-existent or wrong unit. */ | |
2080 | return r; | |
2081 | ||
4a84db4c | 2082 | r = install_info_symlink_alias(scope, info, lp, config_path, force, changes, n_changes); |
83096483 | 2083 | |
4a84db4c | 2084 | q = install_info_symlink_wants(scope, file_flags, info, lp, config_path, info->wanted_by, ".wants/", changes, n_changes); |
83096483 LP |
2085 | if (r == 0) |
2086 | r = q; | |
2087 | ||
4a84db4c | 2088 | q = install_info_symlink_wants(scope, file_flags, info, lp, config_path, info->required_by, ".requires/", changes, n_changes); |
78d54bd4 LP |
2089 | if (r == 0) |
2090 | r = q; | |
2091 | ||
83096483 LP |
2092 | return r; |
2093 | } | |
2094 | ||
2095 | static int install_context_apply( | |
4a84db4c | 2096 | InstallContext *ctx, |
c3e7fba0 | 2097 | const LookupPaths *lp, |
4a84db4c | 2098 | UnitFileFlags file_flags, |
83096483 | 2099 | const char *config_path, |
0ec0deaa | 2100 | SearchFlags flags, |
cd44ec5a | 2101 | InstallChange **changes, |
da6053d0 | 2102 | size_t *n_changes) { |
83096483 | 2103 | |
0047d54d | 2104 | InstallInfo *i; |
0ec0deaa | 2105 | int r; |
83096483 | 2106 | |
4a84db4c | 2107 | assert(ctx); |
c3e7fba0 | 2108 | assert(lp); |
83096483 LP |
2109 | assert(config_path); |
2110 | ||
4a84db4c | 2111 | if (ordered_hashmap_isempty(ctx->will_process)) |
d25e100b | 2112 | return 0; |
83096483 | 2113 | |
4a84db4c | 2114 | r = ordered_hashmap_ensure_allocated(&ctx->have_processed, &string_hash_ops); |
d25e100b LP |
2115 | if (r < 0) |
2116 | return r; | |
83096483 | 2117 | |
2d5c93c7 | 2118 | r = 0; |
4a84db4c | 2119 | while ((i = ordered_hashmap_first(ctx->will_process))) { |
0ec0deaa | 2120 | int q; |
83096483 | 2121 | |
4a84db4c | 2122 | q = ordered_hashmap_move_one(ctx->have_processed, ctx->will_process, i->name); |
0ec0deaa LP |
2123 | if (q < 0) |
2124 | return q; | |
83096483 | 2125 | |
4a84db4c | 2126 | q = install_info_traverse(ctx, lp, i, flags, NULL); |
459500a3 | 2127 | if (q < 0) { |
3aa96361 | 2128 | if (i->auxiliary) { |
1308f72e | 2129 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_AUXILIARY_FAILED, NULL, i->name); |
3aa96361 ZJS |
2130 | if (q < 0) |
2131 | return q; | |
2132 | continue; | |
2133 | } | |
2134 | ||
94e7298d | 2135 | return install_changes_add(changes, n_changes, q, i->name, NULL); |
db093eed | 2136 | } |
0ec0deaa | 2137 | |
f1651715 | 2138 | /* We can attempt to process a masked unit when a different unit |
047d91f9 | 2139 | * that we were processing specifies it in Also=. */ |
91810c8f | 2140 | if (i->install_mode == INSTALL_MODE_MASKED) { |
f31f10a6 ZJS |
2141 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_IS_MASKED, i->path, NULL); |
2142 | if (q < 0) | |
2143 | return q; | |
f1651715 | 2144 | if (r >= 0) |
047d91f9 ZJS |
2145 | /* Assume that something *could* have been enabled here, |
2146 | * avoid "empty [Install] section" warning. */ | |
f1651715 ZJS |
2147 | r += 1; |
2148 | continue; | |
2149 | } | |
2150 | ||
91810c8f | 2151 | if (i->install_mode != INSTALL_MODE_REGULAR) |
0ec0deaa | 2152 | continue; |
83096483 | 2153 | |
4a84db4c | 2154 | q = install_info_apply(ctx->scope, file_flags, i, lp, config_path, changes, n_changes); |
0ec0deaa LP |
2155 | if (r >= 0) { |
2156 | if (q < 0) | |
2157 | r = q; | |
2158 | else | |
596fc263 | 2159 | r += q; |
0ec0deaa | 2160 | } |
83096483 LP |
2161 | } |
2162 | ||
2163 | return r; | |
2164 | } | |
2165 | ||
2166 | static int install_context_mark_for_removal( | |
4a84db4c | 2167 | InstallContext *ctx, |
c3e7fba0 | 2168 | const LookupPaths *lp, |
83096483 | 2169 | Set **remove_symlinks_to, |
1830ac51 | 2170 | const char *config_path, |
cd44ec5a | 2171 | InstallChange **changes, |
da6053d0 | 2172 | size_t *n_changes) { |
83096483 | 2173 | |
0047d54d | 2174 | InstallInfo *i; |
0ec0deaa | 2175 | int r; |
83096483 | 2176 | |
4a84db4c | 2177 | assert(ctx); |
c3e7fba0 | 2178 | assert(lp); |
1830ac51 | 2179 | assert(config_path); |
83096483 LP |
2180 | |
2181 | /* Marks all items for removal */ | |
2182 | ||
4a84db4c | 2183 | if (ordered_hashmap_isempty(ctx->will_process)) |
d25e100b | 2184 | return 0; |
83096483 | 2185 | |
4a84db4c | 2186 | r = ordered_hashmap_ensure_allocated(&ctx->have_processed, &string_hash_ops); |
d25e100b LP |
2187 | if (r < 0) |
2188 | return r; | |
83096483 | 2189 | |
4a84db4c | 2190 | while ((i = ordered_hashmap_first(ctx->will_process))) { |
83096483 | 2191 | |
4a84db4c | 2192 | r = ordered_hashmap_move_one(ctx->have_processed, ctx->will_process, i->name); |
0ec0deaa | 2193 | if (r < 0) |
83096483 | 2194 | return r; |
29283ea4 | 2195 | |
4a84db4c | 2196 | r = install_info_traverse(ctx, lp, i, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, NULL); |
19539807 | 2197 | if (r == -ENOLINK) { |
637d6e5b | 2198 | log_debug_errno(r, "Name %s leads to a dangling symlink, removing name.", i->name); |
f31f10a6 ZJS |
2199 | r = install_changes_add(changes, n_changes, INSTALL_CHANGE_IS_DANGLING, i->path ?: i->name, NULL); |
2200 | if (r < 0) | |
2201 | return r; | |
637d6e5b | 2202 | } else if (r == -ENOENT) { |
637d6e5b LP |
2203 | if (i->auxiliary) /* some unit specified in Also= or similar is missing */ |
2204 | log_debug_errno(r, "Auxiliary unit of %s not found, removing name.", i->name); | |
2205 | else { | |
2206 | log_debug_errno(r, "Unit %s not found, removing name.", i->name); | |
f31f10a6 ZJS |
2207 | r = install_changes_add(changes, n_changes, r, i->path ?: i->name, NULL); |
2208 | if (r < 0) | |
2209 | return r; | |
637d6e5b | 2210 | } |
637d6e5b LP |
2211 | } else if (r < 0) { |
2212 | log_debug_errno(r, "Failed to find unit %s, removing name: %m", i->name); | |
cd44ec5a | 2213 | install_changes_add(changes, n_changes, r, i->path ?: i->name, NULL); |
91810c8f | 2214 | } else if (i->install_mode == INSTALL_MODE_MASKED) { |
637d6e5b | 2215 | log_debug("Unit file %s is masked, ignoring.", i->name); |
1308f72e | 2216 | install_changes_add(changes, n_changes, INSTALL_CHANGE_IS_MASKED, i->path ?: i->name, NULL); |
637d6e5b | 2217 | continue; |
91810c8f ZJS |
2218 | } else if (i->install_mode != INSTALL_MODE_REGULAR) { |
2219 | log_debug("Unit %s has install mode %s, ignoring.", | |
2220 | i->name, install_mode_to_string(i->install_mode) ?: "invalid"); | |
0ec0deaa | 2221 | continue; |
64f9280e | 2222 | } |
0ec0deaa LP |
2223 | |
2224 | r = mark_symlink_for_removal(remove_symlinks_to, i->name); | |
2225 | if (r < 0) | |
2226 | return r; | |
2227 | } | |
2228 | ||
2229 | return 0; | |
2230 | } | |
2231 | ||
2232 | int unit_file_mask( | |
b380b643 | 2233 | LookupScope scope, |
b3796dd8 | 2234 | UnitFileFlags flags, |
0ec0deaa | 2235 | const char *root_dir, |
0f87041f | 2236 | char **names, |
cd44ec5a | 2237 | InstallChange **changes, |
da6053d0 | 2238 | size_t *n_changes) { |
0ec0deaa | 2239 | |
c3e7fba0 | 2240 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
e1c5c2b0 | 2241 | const char *config_path; |
0ec0deaa LP |
2242 | int r; |
2243 | ||
2244 | assert(scope >= 0); | |
b380b643 | 2245 | assert(scope < _LOOKUP_SCOPE_MAX); |
0ec0deaa | 2246 | |
c3e7fba0 | 2247 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
0ec0deaa LP |
2248 | if (r < 0) |
2249 | return r; | |
2250 | ||
c3e7fba0 | 2251 | config_path = (flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
d0fd66a3 LP |
2252 | if (!config_path) |
2253 | return -ENXIO; | |
e1c5c2b0 | 2254 | |
0f87041f | 2255 | STRV_FOREACH(name, names) { |
0ec0deaa LP |
2256 | _cleanup_free_ char *path = NULL; |
2257 | int q; | |
2258 | ||
0f87041f | 2259 | if (!unit_name_is_valid(*name, UNIT_NAME_ANY)) { |
0ec0deaa LP |
2260 | if (r == 0) |
2261 | r = -EINVAL; | |
2262 | continue; | |
2263 | } | |
2264 | ||
0f87041f | 2265 | path = path_make_absolute(*name, config_path); |
0ec0deaa LP |
2266 | if (!path) |
2267 | return -ENOMEM; | |
29283ea4 | 2268 | |
d3e85c9c | 2269 | q = create_symlink(&lp, "/dev/null", path, flags & UNIT_FILE_FORCE, changes, n_changes); |
0ec0deaa | 2270 | if (q < 0 && r >= 0) |
83096483 LP |
2271 | r = q; |
2272 | } | |
2273 | ||
2274 | return r; | |
2275 | } | |
2276 | ||
0ec0deaa | 2277 | int unit_file_unmask( |
b380b643 | 2278 | LookupScope scope, |
b3796dd8 | 2279 | UnitFileFlags flags, |
0ec0deaa | 2280 | const char *root_dir, |
0f87041f | 2281 | char **names, |
cd44ec5a | 2282 | InstallChange **changes, |
da6053d0 | 2283 | size_t *n_changes) { |
0ec0deaa | 2284 | |
c3e7fba0 | 2285 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
0ec0deaa | 2286 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; |
dc7dd61d | 2287 | _cleanup_strv_free_ char **todo = NULL; |
e1c5c2b0 | 2288 | const char *config_path; |
319a4f4b | 2289 | size_t n_todo = 0; |
0ec0deaa LP |
2290 | int r, q; |
2291 | ||
2292 | assert(scope >= 0); | |
b380b643 | 2293 | assert(scope < _LOOKUP_SCOPE_MAX); |
0ec0deaa | 2294 | |
c3e7fba0 | 2295 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
0ec0deaa LP |
2296 | if (r < 0) |
2297 | return r; | |
2298 | ||
c3e7fba0 | 2299 | config_path = (flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
1830ac51 MB |
2300 | if (!config_path) |
2301 | return -ENXIO; | |
2302 | ||
d3e85c9c | 2303 | bool dry_run = flags & UNIT_FILE_DRY_RUN; |
1830ac51 | 2304 | |
0f87041f | 2305 | STRV_FOREACH(name, names) { |
0f87041f | 2306 | if (!unit_name_is_valid(*name, UNIT_NAME_ANY)) |
0ec0deaa LP |
2307 | return -EINVAL; |
2308 | ||
bf3b0d5f ZJS |
2309 | /* If root_dir is set, we don't care about kernel commandline or generators. |
2310 | * But if it is not set, we need to check for interference. */ | |
2311 | if (!root_dir) { | |
2312 | _cleanup_(install_info_clear) InstallInfo info = { | |
2313 | .name = *name, /* We borrow *name temporarily… */ | |
2314 | .install_mode = _INSTALL_MODE_INVALID, | |
2315 | }; | |
2316 | ||
2317 | r = unit_file_search(NULL, &info, &lp, 0); | |
2318 | if (r < 0) { | |
2319 | if (r != -ENOENT) | |
2320 | log_debug_errno(r, "Failed to look up unit %s, ignoring: %m", info.name); | |
f31f10a6 ZJS |
2321 | } else if (info.install_mode == INSTALL_MODE_MASKED && |
2322 | path_is_generator(&lp, info.path)) { | |
2323 | r = install_changes_add(changes, n_changes, | |
2324 | INSTALL_CHANGE_IS_MASKED_GENERATOR, info.name, info.path); | |
2325 | if (r < 0) | |
2326 | return r; | |
bf3b0d5f ZJS |
2327 | } |
2328 | ||
2329 | TAKE_PTR(info.name); /* … and give it back here */ | |
2330 | } | |
2331 | ||
2332 | _cleanup_free_ char *path = path_make_absolute(*name, config_path); | |
1830ac51 MB |
2333 | if (!path) |
2334 | return -ENOMEM; | |
0ec0deaa | 2335 | |
1830ac51 MB |
2336 | r = null_or_empty_path(path); |
2337 | if (r == -ENOENT) | |
2338 | continue; | |
2339 | if (r < 0) | |
2340 | return r; | |
2341 | if (r == 0) | |
2342 | continue; | |
0ec0deaa | 2343 | |
319a4f4b | 2344 | if (!GREEDY_REALLOC0(todo, n_todo + 2)) |
1830ac51 | 2345 | return -ENOMEM; |
d054eae6 | 2346 | |
0f87041f | 2347 | todo[n_todo] = strdup(*name); |
1830ac51 MB |
2348 | if (!todo[n_todo]) |
2349 | return -ENOMEM; | |
4910b350 | 2350 | |
1830ac51 | 2351 | n_todo++; |
0ec0deaa LP |
2352 | } |
2353 | ||
2354 | strv_uniq(todo); | |
2355 | ||
2356 | r = 0; | |
1830ac51 MB |
2357 | STRV_FOREACH(i, todo) { |
2358 | _cleanup_free_ char *path = NULL; | |
2359 | const char *rp; | |
0ec0deaa | 2360 | |
1830ac51 MB |
2361 | path = path_make_absolute(*i, config_path); |
2362 | if (!path) | |
2363 | return -ENOMEM; | |
4910b350 | 2364 | |
1830ac51 MB |
2365 | if (!dry_run && unlink(path) < 0) { |
2366 | if (errno != ENOENT) { | |
2367 | if (r >= 0) | |
2368 | r = -errno; | |
cd44ec5a | 2369 | install_changes_add(changes, n_changes, -errno, path, NULL); |
af3d8113 | 2370 | } |
0ec0deaa | 2371 | |
1830ac51 | 2372 | continue; |
4910b350 | 2373 | } |
401017e0 | 2374 | |
f31f10a6 ZJS |
2375 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_UNLINK, path, NULL); |
2376 | if (q < 0) | |
2377 | return q; | |
1830ac51 | 2378 | |
c3e7fba0 | 2379 | rp = skip_root(lp.root_dir, path); |
1830ac51 MB |
2380 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: path); |
2381 | if (q < 0) | |
2382 | return q; | |
0ec0deaa LP |
2383 | } |
2384 | ||
c3e7fba0 | 2385 | q = remove_marked_symlinks(remove_symlinks_to, config_path, &lp, dry_run, changes, n_changes); |
1830ac51 MB |
2386 | if (r >= 0) |
2387 | r = q; | |
2388 | ||
0ec0deaa LP |
2389 | return r; |
2390 | } | |
2391 | ||
2392 | int unit_file_link( | |
b380b643 | 2393 | LookupScope scope, |
b3796dd8 | 2394 | UnitFileFlags flags, |
e94937df LN |
2395 | const char *root_dir, |
2396 | char **files, | |
cd44ec5a | 2397 | InstallChange **changes, |
da6053d0 | 2398 | size_t *n_changes) { |
e94937df | 2399 | |
c3e7fba0 | 2400 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
8af35ba6 | 2401 | _cleanup_strv_free_ char **todo = NULL; |
e1c5c2b0 | 2402 | const char *config_path; |
319a4f4b | 2403 | size_t n_todo = 0; |
0ec0deaa | 2404 | int r, q; |
e94937df LN |
2405 | |
2406 | assert(scope >= 0); | |
b380b643 | 2407 | assert(scope < _LOOKUP_SCOPE_MAX); |
e94937df | 2408 | |
c3e7fba0 | 2409 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
e94937df LN |
2410 | if (r < 0) |
2411 | return r; | |
2412 | ||
c3e7fba0 | 2413 | config_path = (flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
d0fd66a3 LP |
2414 | if (!config_path) |
2415 | return -ENXIO; | |
e94937df | 2416 | |
0f87041f | 2417 | STRV_FOREACH(file, files) { |
0ec0deaa LP |
2418 | _cleanup_free_ char *full = NULL; |
2419 | struct stat st; | |
2420 | char *fn; | |
e94937df | 2421 | |
0f87041f | 2422 | if (!path_is_absolute(*file)) |
81de6962 | 2423 | return install_changes_add(changes, n_changes, -EINVAL, *file, NULL); |
e94937df | 2424 | |
0f87041f | 2425 | fn = basename(*file); |
0ec0deaa | 2426 | if (!unit_name_is_valid(fn, UNIT_NAME_ANY)) |
81de6962 | 2427 | return install_changes_add(changes, n_changes, -EUCLEAN, *file, NULL); |
0ec0deaa | 2428 | |
0f87041f | 2429 | full = path_join(lp.root_dir, *file); |
0ec0deaa LP |
2430 | if (!full) |
2431 | return -ENOMEM; | |
2432 | ||
2433 | if (lstat(full, &st) < 0) | |
81de6962 ZJS |
2434 | return install_changes_add(changes, n_changes, -errno, *file, NULL); |
2435 | ||
3cc44114 LP |
2436 | r = stat_verify_regular(&st); |
2437 | if (r < 0) | |
81de6962 | 2438 | return install_changes_add(changes, n_changes, r, *file, NULL); |
0ec0deaa | 2439 | |
81de6962 ZJS |
2440 | r = in_search_path(&lp, *file); |
2441 | if (r < 0) | |
2442 | return install_changes_add(changes, n_changes, r, *file, NULL); | |
2443 | if (r > 0) | |
a6f318a5 | 2444 | /* A silent noop if the file is already in the search path. */ |
0ec0deaa LP |
2445 | continue; |
2446 | ||
a6f318a5 ZJS |
2447 | r = underneath_search_path(&lp, *file); |
2448 | if (r > 0) | |
2449 | r = -ETXTBSY; | |
2450 | if (r < 0) | |
2451 | return install_changes_add(changes, n_changes, r, *file, NULL); | |
2452 | ||
319a4f4b | 2453 | if (!GREEDY_REALLOC0(todo, n_todo + 2)) |
0ec0deaa LP |
2454 | return -ENOMEM; |
2455 | ||
0f87041f | 2456 | todo[n_todo] = strdup(*file); |
8af35ba6 EV |
2457 | if (!todo[n_todo]) |
2458 | return -ENOMEM; | |
2459 | ||
2460 | n_todo++; | |
e94937df LN |
2461 | } |
2462 | ||
0ec0deaa | 2463 | strv_uniq(todo); |
e94937df | 2464 | |
0ec0deaa LP |
2465 | r = 0; |
2466 | STRV_FOREACH(i, todo) { | |
401017e0 | 2467 | _cleanup_free_ char *new_path = NULL; |
0ec0deaa | 2468 | |
401017e0 LP |
2469 | new_path = path_make_absolute(basename(*i), config_path); |
2470 | if (!new_path) | |
0ec0deaa LP |
2471 | return -ENOMEM; |
2472 | ||
d3e85c9c | 2473 | q = create_symlink(&lp, *i, new_path, flags & UNIT_FILE_FORCE, changes, n_changes); |
0ec0deaa LP |
2474 | if (q < 0 && r >= 0) |
2475 | r = q; | |
2d5c93c7 MS |
2476 | } |
2477 | ||
0ec0deaa LP |
2478 | return r; |
2479 | } | |
2480 | ||
c3e7fba0 | 2481 | static int path_shall_revert(const LookupPaths *lp, const char *path) { |
344ca755 LP |
2482 | int r; |
2483 | ||
c3e7fba0 | 2484 | assert(lp); |
344ca755 LP |
2485 | assert(path); |
2486 | ||
2487 | /* Checks whether the path is one where the drop-in directories shall be removed. */ | |
2488 | ||
c3e7fba0 | 2489 | r = path_is_config(lp, path, true); |
344ca755 LP |
2490 | if (r != 0) |
2491 | return r; | |
2492 | ||
c3e7fba0 | 2493 | r = path_is_control(lp, path); |
344ca755 LP |
2494 | if (r != 0) |
2495 | return r; | |
2496 | ||
c3e7fba0 | 2497 | return path_is_transient(lp, path); |
344ca755 LP |
2498 | } |
2499 | ||
2500 | int unit_file_revert( | |
b380b643 | 2501 | LookupScope scope, |
344ca755 | 2502 | const char *root_dir, |
0f87041f | 2503 | char **names, |
cd44ec5a | 2504 | InstallChange **changes, |
da6053d0 | 2505 | size_t *n_changes) { |
344ca755 LP |
2506 | |
2507 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
c3e7fba0 | 2508 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
344ca755 | 2509 | _cleanup_strv_free_ char **todo = NULL; |
319a4f4b | 2510 | size_t n_todo = 0; |
344ca755 LP |
2511 | int r, q; |
2512 | ||
2513 | /* Puts a unit file back into vendor state. This means: | |
2514 | * | |
0f87041f ZJS |
2515 | * a) we remove all drop-in snippets added by the user ("config"), add to transient units |
2516 | * ("transient"), and added via "systemctl set-property" ("control"), but not if the drop-in is | |
2517 | * generated ("generated"). | |
344ca755 | 2518 | * |
0f87041f ZJS |
2519 | * c) if there's a vendor unit file (i.e. one in /usr) we remove any configured overriding unit files |
2520 | * (i.e. in "config", but not in "transient" or "control" or even "generated"). | |
344ca755 | 2521 | * |
4f25723c | 2522 | * We remove all that in both the runtime and the persistent directories, if that applies. |
344ca755 LP |
2523 | */ |
2524 | ||
c3e7fba0 | 2525 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
344ca755 LP |
2526 | if (r < 0) |
2527 | return r; | |
2528 | ||
0f87041f | 2529 | STRV_FOREACH(name, names) { |
344ca755 | 2530 | bool has_vendor = false; |
344ca755 | 2531 | |
0f87041f | 2532 | if (!unit_name_is_valid(*name, UNIT_NAME_ANY)) |
344ca755 LP |
2533 | return -EINVAL; |
2534 | ||
c3e7fba0 | 2535 | STRV_FOREACH(p, lp.search_path) { |
344ca755 LP |
2536 | _cleanup_free_ char *path = NULL, *dropin = NULL; |
2537 | struct stat st; | |
2538 | ||
0f87041f | 2539 | path = path_make_absolute(*name, *p); |
344ca755 LP |
2540 | if (!path) |
2541 | return -ENOMEM; | |
2542 | ||
81de6962 | 2543 | r = RET_NERRNO(lstat(path, &st)); |
344ca755 | 2544 | if (r < 0) { |
81de6962 ZJS |
2545 | if (r != -ENOENT) |
2546 | return install_changes_add(changes, n_changes, r, path, NULL); | |
344ca755 LP |
2547 | } else if (S_ISREG(st.st_mode)) { |
2548 | /* Check if there's a vendor version */ | |
c3e7fba0 | 2549 | r = path_is_vendor_or_generator(&lp, path); |
344ca755 | 2550 | if (r < 0) |
81de6962 | 2551 | return install_changes_add(changes, n_changes, r, path, NULL); |
344ca755 LP |
2552 | if (r > 0) |
2553 | has_vendor = true; | |
2554 | } | |
2555 | ||
b910cc72 | 2556 | dropin = strjoin(path, ".d"); |
344ca755 LP |
2557 | if (!dropin) |
2558 | return -ENOMEM; | |
2559 | ||
81de6962 | 2560 | r = RET_NERRNO(lstat(dropin, &st)); |
344ca755 | 2561 | if (r < 0) { |
81de6962 ZJS |
2562 | if (r != -ENOENT) |
2563 | return install_changes_add(changes, n_changes, r, dropin, NULL); | |
344ca755 LP |
2564 | } else if (S_ISDIR(st.st_mode)) { |
2565 | /* Remove the drop-ins */ | |
c3e7fba0 | 2566 | r = path_shall_revert(&lp, dropin); |
344ca755 | 2567 | if (r < 0) |
81de6962 | 2568 | return install_changes_add(changes, n_changes, r, dropin, NULL); |
344ca755 | 2569 | if (r > 0) { |
319a4f4b | 2570 | if (!GREEDY_REALLOC0(todo, n_todo + 2)) |
344ca755 LP |
2571 | return -ENOMEM; |
2572 | ||
1cc6c93a | 2573 | todo[n_todo++] = TAKE_PTR(dropin); |
344ca755 LP |
2574 | } |
2575 | } | |
2576 | } | |
2577 | ||
2578 | if (!has_vendor) | |
2579 | continue; | |
2580 | ||
2581 | /* OK, there's a vendor version, hence drop all configuration versions */ | |
c3e7fba0 | 2582 | STRV_FOREACH(p, lp.search_path) { |
344ca755 LP |
2583 | _cleanup_free_ char *path = NULL; |
2584 | struct stat st; | |
2585 | ||
0f87041f | 2586 | path = path_make_absolute(*name, *p); |
344ca755 LP |
2587 | if (!path) |
2588 | return -ENOMEM; | |
2589 | ||
81de6962 | 2590 | r = RET_NERRNO(lstat(path, &st)); |
344ca755 | 2591 | if (r < 0) { |
81de6962 ZJS |
2592 | if (r != -ENOENT) |
2593 | return install_changes_add(changes, n_changes, r, path, NULL); | |
344ca755 | 2594 | } else if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) { |
c3e7fba0 | 2595 | r = path_is_config(&lp, path, true); |
344ca755 | 2596 | if (r < 0) |
81de6962 | 2597 | return install_changes_add(changes, n_changes, r, path, NULL); |
344ca755 | 2598 | if (r > 0) { |
319a4f4b | 2599 | if (!GREEDY_REALLOC0(todo, n_todo + 2)) |
344ca755 LP |
2600 | return -ENOMEM; |
2601 | ||
1cc6c93a | 2602 | todo[n_todo++] = TAKE_PTR(path); |
344ca755 LP |
2603 | } |
2604 | } | |
2605 | } | |
2606 | } | |
2607 | ||
2608 | strv_uniq(todo); | |
2609 | ||
2610 | r = 0; | |
2611 | STRV_FOREACH(i, todo) { | |
2612 | _cleanup_strv_free_ char **fs = NULL; | |
2613 | const char *rp; | |
344ca755 LP |
2614 | |
2615 | (void) get_files_in_directory(*i, &fs); | |
2616 | ||
2617 | q = rm_rf(*i, REMOVE_ROOT|REMOVE_PHYSICAL); | |
2618 | if (q < 0 && q != -ENOENT && r >= 0) { | |
2619 | r = q; | |
2620 | continue; | |
2621 | } | |
2622 | ||
2623 | STRV_FOREACH(j, fs) { | |
2624 | _cleanup_free_ char *t = NULL; | |
2625 | ||
657ee2d8 | 2626 | t = path_join(*i, *j); |
344ca755 LP |
2627 | if (!t) |
2628 | return -ENOMEM; | |
2629 | ||
f31f10a6 ZJS |
2630 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_UNLINK, t, NULL); |
2631 | if (q < 0) | |
2632 | return q; | |
344ca755 LP |
2633 | } |
2634 | ||
f31f10a6 ZJS |
2635 | q = install_changes_add(changes, n_changes, INSTALL_CHANGE_UNLINK, *i, NULL); |
2636 | if (q < 0) | |
2637 | return q; | |
344ca755 | 2638 | |
c3e7fba0 | 2639 | rp = skip_root(lp.root_dir, *i); |
344ca755 LP |
2640 | q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: *i); |
2641 | if (q < 0) | |
2642 | return q; | |
2643 | } | |
2644 | ||
c3e7fba0 | 2645 | q = remove_marked_symlinks(remove_symlinks_to, lp.runtime_config, &lp, false, changes, n_changes); |
344ca755 LP |
2646 | if (r >= 0) |
2647 | r = q; | |
2648 | ||
c3e7fba0 | 2649 | q = remove_marked_symlinks(remove_symlinks_to, lp.persistent_config, &lp, false, changes, n_changes); |
344ca755 LP |
2650 | if (r >= 0) |
2651 | r = q; | |
2652 | ||
2653 | return r; | |
2654 | } | |
2655 | ||
0ec0deaa | 2656 | int unit_file_add_dependency( |
b380b643 | 2657 | LookupScope scope, |
9b69770a | 2658 | UnitFileFlags file_flags, |
0ec0deaa | 2659 | const char *root_dir, |
0f87041f | 2660 | char **names, |
0ec0deaa LP |
2661 | const char *target, |
2662 | UnitDependency dep, | |
cd44ec5a | 2663 | InstallChange **changes, |
da6053d0 | 2664 | size_t *n_changes) { |
0ec0deaa | 2665 | |
c3e7fba0 | 2666 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
4a84db4c | 2667 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
0047d54d | 2668 | InstallInfo *info, *target_info; |
e1c5c2b0 | 2669 | const char *config_path; |
0ec0deaa LP |
2670 | int r; |
2671 | ||
2672 | assert(scope >= 0); | |
b380b643 | 2673 | assert(scope < _LOOKUP_SCOPE_MAX); |
0ec0deaa | 2674 | assert(target); |
81de6962 | 2675 | assert(IN_SET(dep, UNIT_WANTS, UNIT_REQUIRES)); |
0ec0deaa LP |
2676 | |
2677 | if (!unit_name_is_valid(target, UNIT_NAME_ANY)) | |
81de6962 | 2678 | return install_changes_add(changes, n_changes, -EUCLEAN, target, NULL); |
0ec0deaa | 2679 | |
c3e7fba0 | 2680 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
0ec0deaa LP |
2681 | if (r < 0) |
2682 | return r; | |
2683 | ||
c3e7fba0 | 2684 | config_path = (file_flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
d0fd66a3 LP |
2685 | if (!config_path) |
2686 | return -ENXIO; | |
0ec0deaa | 2687 | |
4a84db4c | 2688 | r = install_info_discover_and_check(&ctx, &lp, target, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
1e475a0a | 2689 | &target_info, changes, n_changes); |
76adb5b8 LP |
2690 | if (r < 0) |
2691 | return r; | |
0ec0deaa | 2692 | |
91810c8f | 2693 | assert(target_info->install_mode == INSTALL_MODE_REGULAR); |
e94937df | 2694 | |
0f87041f | 2695 | STRV_FOREACH(name, names) { |
0ec0deaa LP |
2696 | char ***l; |
2697 | ||
0f87041f ZJS |
2698 | r = install_info_discover_and_check(&ctx, &lp, *name, |
2699 | SEARCH_FOLLOW_CONFIG_SYMLINKS, | |
4a84db4c | 2700 | &info, changes, n_changes); |
76adb5b8 LP |
2701 | if (r < 0) |
2702 | return r; | |
0ec0deaa | 2703 | |
91810c8f | 2704 | assert(info->install_mode == INSTALL_MODE_REGULAR); |
0ec0deaa LP |
2705 | |
2706 | /* We didn't actually load anything from the unit | |
2707 | * file, but instead just add in our new symlink to | |
2708 | * create. */ | |
e94937df LN |
2709 | |
2710 | if (dep == UNIT_WANTS) | |
4a84db4c | 2711 | l = &info->wanted_by; |
e94937df | 2712 | else |
4a84db4c | 2713 | l = &info->required_by; |
e94937df | 2714 | |
0ec0deaa | 2715 | strv_free(*l); |
bea1a013 | 2716 | *l = strv_new(target_info->name); |
0ec0deaa LP |
2717 | if (!*l) |
2718 | return -ENOMEM; | |
e94937df LN |
2719 | } |
2720 | ||
4a84db4c | 2721 | return install_context_apply(&ctx, &lp, file_flags, config_path, |
9b69770a | 2722 | SEARCH_FOLLOW_CONFIG_SYMLINKS, changes, n_changes); |
e94937df LN |
2723 | } |
2724 | ||
ec7eaff3 ZJS |
2725 | static int do_unit_file_enable( |
2726 | const LookupPaths *lp, | |
b380b643 | 2727 | LookupScope scope, |
ec7eaff3 ZJS |
2728 | UnitFileFlags flags, |
2729 | const char *config_path, | |
0f87041f | 2730 | char **names_or_paths, |
cd44ec5a | 2731 | InstallChange **changes, |
da6053d0 | 2732 | size_t *n_changes) { |
83096483 | 2733 | |
4a84db4c | 2734 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
0047d54d | 2735 | InstallInfo *info; |
83096483 LP |
2736 | int r; |
2737 | ||
0f87041f ZJS |
2738 | STRV_FOREACH(name, names_or_paths) { |
2739 | r = install_info_discover_and_check(&ctx, lp, *name, | |
2740 | SEARCH_LOAD | SEARCH_FOLLOW_CONFIG_SYMLINKS, | |
4a84db4c | 2741 | &info, changes, n_changes); |
76adb5b8 LP |
2742 | if (r < 0) |
2743 | return r; | |
0ec0deaa | 2744 | |
91810c8f | 2745 | assert(info->install_mode == INSTALL_MODE_REGULAR); |
83096483 LP |
2746 | } |
2747 | ||
729e3769 | 2748 | /* This will return the number of symlink rules that were |
d25e100b | 2749 | supposed to be created, not the ones actually created. This |
0f87041f | 2750 | is useful to determine whether the passed units had any |
d25e100b | 2751 | installation data at all. */ |
b91a3b02 | 2752 | |
ec7eaff3 | 2753 | return install_context_apply(&ctx, lp, flags, config_path, |
4a84db4c | 2754 | SEARCH_LOAD, changes, n_changes); |
83096483 LP |
2755 | } |
2756 | ||
ec7eaff3 | 2757 | int unit_file_enable( |
b380b643 | 2758 | LookupScope scope, |
b3796dd8 | 2759 | UnitFileFlags flags, |
83096483 | 2760 | const char *root_dir, |
0f87041f | 2761 | char **names_or_paths, |
cd44ec5a | 2762 | InstallChange **changes, |
da6053d0 | 2763 | size_t *n_changes) { |
83096483 | 2764 | |
c3e7fba0 | 2765 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
0ec0deaa | 2766 | int r; |
83096483 LP |
2767 | |
2768 | assert(scope >= 0); | |
b380b643 | 2769 | assert(scope < _LOOKUP_SCOPE_MAX); |
83096483 | 2770 | |
c3e7fba0 | 2771 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
83096483 LP |
2772 | if (r < 0) |
2773 | return r; | |
2774 | ||
ec7eaff3 | 2775 | const char *config_path = config_path_from_flags(&lp, flags); |
1830ac51 MB |
2776 | if (!config_path) |
2777 | return -ENXIO; | |
2778 | ||
0f87041f | 2779 | return do_unit_file_enable(&lp, scope, flags, config_path, names_or_paths, changes, n_changes); |
ec7eaff3 ZJS |
2780 | } |
2781 | ||
2782 | static int do_unit_file_disable( | |
2783 | const LookupPaths *lp, | |
b380b643 | 2784 | LookupScope scope, |
ec7eaff3 ZJS |
2785 | UnitFileFlags flags, |
2786 | const char *config_path, | |
0f87041f | 2787 | char **names, |
cd44ec5a | 2788 | InstallChange **changes, |
ec7eaff3 ZJS |
2789 | size_t *n_changes) { |
2790 | ||
2791 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; | |
2792 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
bf1bea43 MY |
2793 | InstallInfo *info; |
2794 | bool has_install_info = false; | |
ec7eaff3 ZJS |
2795 | int r; |
2796 | ||
0f87041f ZJS |
2797 | STRV_FOREACH(name, names) { |
2798 | if (!unit_name_is_valid(*name, UNIT_NAME_ANY)) | |
81de6962 | 2799 | return install_changes_add(changes, n_changes, -EUCLEAN, *name, NULL); |
0ec0deaa | 2800 | |
bf1bea43 MY |
2801 | r = install_info_add(&ctx, *name, NULL, lp->root_dir, /* auxiliary= */ false, &info); |
2802 | if (r >= 0) | |
2803 | r = install_info_traverse(&ctx, lp, info, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, NULL); | |
2804 | ||
83096483 | 2805 | if (r < 0) |
bf1bea43 MY |
2806 | return install_changes_add(changes, n_changes, r, *name, NULL); |
2807 | ||
2808 | /* If we enable multiple units, some with install info and others without, | |
2809 | * the "empty [Install] section" warning is not shown. Let's make the behavior | |
2810 | * of disable align with that. */ | |
2811 | has_install_info = has_install_info || install_info_has_rules(info) || install_info_has_also(info); | |
83096483 LP |
2812 | } |
2813 | ||
ec7eaff3 | 2814 | r = install_context_mark_for_removal(&ctx, lp, &remove_symlinks_to, config_path, changes, n_changes); |
bf1bea43 MY |
2815 | if (r >= 0) |
2816 | r = remove_marked_symlinks(remove_symlinks_to, config_path, lp, flags & UNIT_FILE_DRY_RUN, changes, n_changes); | |
2817 | ||
0ec0deaa LP |
2818 | if (r < 0) |
2819 | return r; | |
83096483 | 2820 | |
bf1bea43 MY |
2821 | /* The warning is shown only if it's a no-op */ |
2822 | return install_changes_have_modification(*changes, *n_changes) || has_install_info; | |
83096483 LP |
2823 | } |
2824 | ||
ec7eaff3 | 2825 | int unit_file_disable( |
b380b643 | 2826 | LookupScope scope, |
b3796dd8 | 2827 | UnitFileFlags flags, |
83096483 | 2828 | const char *root_dir, |
7195aa42 | 2829 | char **files, |
cd44ec5a | 2830 | InstallChange **changes, |
da6053d0 | 2831 | size_t *n_changes) { |
0ec0deaa | 2832 | |
ec7eaff3 | 2833 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
92d430a9 | 2834 | int r; |
ec7eaff3 ZJS |
2835 | |
2836 | assert(scope >= 0); | |
b380b643 | 2837 | assert(scope < _LOOKUP_SCOPE_MAX); |
ec7eaff3 ZJS |
2838 | |
2839 | r = lookup_paths_init(&lp, scope, 0, root_dir); | |
2840 | if (r < 0) | |
2841 | return r; | |
2842 | ||
2843 | const char *config_path = config_path_from_flags(&lp, flags); | |
2844 | if (!config_path) | |
2845 | return -ENXIO; | |
2846 | ||
2847 | return do_unit_file_disable(&lp, scope, flags, config_path, files, changes, n_changes); | |
2848 | } | |
2849 | ||
29a7c59a | 2850 | static int normalize_linked_files( |
b380b643 | 2851 | LookupScope scope, |
29a7c59a ZJS |
2852 | const LookupPaths *lp, |
2853 | char **names_or_paths, | |
2854 | char ***ret_names, | |
2855 | char ***ret_files) { | |
2856 | ||
2857 | /* This is similar to normalize_filenames()/normalize_names() in src/systemctl/, | |
2858 | * but operates on real unit names. For each argument we we look up the actual path | |
8b7378e1 | 2859 | * where the unit is found. This way linked units can be re-enabled successfully. */ |
29a7c59a | 2860 | |
0b6bf4b6 | 2861 | _cleanup_strv_free_ char **files = NULL, **names = NULL; |
29a7c59a ZJS |
2862 | int r; |
2863 | ||
2864 | STRV_FOREACH(a, names_or_paths) { | |
2865 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; | |
0047d54d | 2866 | InstallInfo *i = NULL; |
29a7c59a ZJS |
2867 | _cleanup_free_ char *n = NULL; |
2868 | ||
2869 | r = path_extract_filename(*a, &n); | |
2870 | if (r < 0) | |
2871 | return r; | |
2872 | if (r == O_DIRECTORY) | |
2873 | return log_debug_errno(SYNTHETIC_ERRNO(EISDIR), | |
2874 | "Unexpected path to a directory \"%s\", refusing.", *a); | |
2875 | ||
2876 | if (!is_path(*a)) { | |
2877 | r = install_info_discover(&ctx, lp, n, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, &i, NULL, NULL); | |
2878 | if (r < 0) | |
2879 | log_debug_errno(r, "Failed to discover unit \"%s\", operating on name: %m", n); | |
2880 | } | |
2881 | ||
2882 | r = strv_consume(&names, TAKE_PTR(n)); | |
2883 | if (r < 0) | |
2884 | return r; | |
2885 | ||
2886 | const char *p = NULL; | |
6e961aeb | 2887 | if (i && i->path && i->root) |
29a7c59a ZJS |
2888 | /* Use startswith here, because we know that paths are normalized, and |
2889 | * path_startswith() would give us a relative path, but we need an absolute path | |
2890 | * relative to i->root. | |
2891 | * | |
2892 | * In other words: /var/tmp/instroot.1234/etc/systemd/system/frobnicator.service | |
2893 | * is replaced by /etc/systemd/system/frobnicator.service, which is "absolute" | |
2894 | * in a sense, but only makes sense "relative" to /var/tmp/instroot.1234/. | |
2895 | */ | |
2896 | p = startswith(i->path, i->root); | |
2897 | ||
2898 | r = strv_extend(&files, p ?: *a); | |
2899 | if (r < 0) | |
2900 | return r; | |
2901 | } | |
2902 | ||
2903 | *ret_names = TAKE_PTR(names); | |
2904 | *ret_files = TAKE_PTR(files); | |
2905 | return 0; | |
2906 | } | |
2907 | ||
ec7eaff3 | 2908 | int unit_file_reenable( |
b380b643 | 2909 | LookupScope scope, |
ec7eaff3 ZJS |
2910 | UnitFileFlags flags, |
2911 | const char *root_dir, | |
29a7c59a | 2912 | char **names_or_paths, |
cd44ec5a | 2913 | InstallChange **changes, |
ec7eaff3 ZJS |
2914 | size_t *n_changes) { |
2915 | ||
2916 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; | |
29a7c59a | 2917 | _cleanup_strv_free_ char **names = NULL, **files = NULL; |
ec7eaff3 ZJS |
2918 | int r; |
2919 | ||
2920 | assert(scope >= 0); | |
b380b643 | 2921 | assert(scope < _LOOKUP_SCOPE_MAX); |
ec7eaff3 ZJS |
2922 | |
2923 | r = lookup_paths_init(&lp, scope, 0, root_dir); | |
2924 | if (r < 0) | |
2925 | return r; | |
2926 | ||
2927 | const char *config_path = config_path_from_flags(&lp, flags); | |
2928 | if (!config_path) | |
2929 | return -ENXIO; | |
83096483 | 2930 | |
29a7c59a ZJS |
2931 | r = normalize_linked_files(scope, &lp, names_or_paths, &names, &files); |
2932 | if (r < 0) | |
2933 | return r; | |
0ec0deaa | 2934 | |
29a7c59a | 2935 | /* First, we invoke the disable command with only the basename... */ |
ec7eaff3 | 2936 | r = do_unit_file_disable(&lp, scope, flags, config_path, names, changes, n_changes); |
83096483 | 2937 | if (r < 0) |
d9e5e694 | 2938 | return r; |
83096483 | 2939 | |
0ec0deaa | 2940 | /* But the enable command with the full name */ |
ec7eaff3 | 2941 | return do_unit_file_enable(&lp, scope, flags, config_path, files, changes, n_changes); |
83096483 LP |
2942 | } |
2943 | ||
99504dd4 | 2944 | int unit_file_set_default( |
b380b643 | 2945 | LookupScope scope, |
b3796dd8 | 2946 | UnitFileFlags flags, |
99504dd4 | 2947 | const char *root_dir, |
0ec0deaa | 2948 | const char *name, |
cd44ec5a | 2949 | InstallChange **changes, |
da6053d0 | 2950 | size_t *n_changes) { |
99504dd4 | 2951 | |
c3e7fba0 | 2952 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
4a84db4c | 2953 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
0047d54d | 2954 | InstallInfo *info; |
60bec8e4 | 2955 | const char *new_path; |
99504dd4 | 2956 | int r; |
99504dd4 VP |
2957 | |
2958 | assert(scope >= 0); | |
b380b643 | 2959 | assert(scope < _LOOKUP_SCOPE_MAX); |
0ec0deaa | 2960 | assert(name); |
99504dd4 | 2961 | |
401017e0 | 2962 | if (unit_name_to_type(name) != UNIT_TARGET) /* this also validates the name */ |
0ec0deaa LP |
2963 | return -EINVAL; |
2964 | if (streq(name, SPECIAL_DEFAULT_TARGET)) | |
99504dd4 VP |
2965 | return -EINVAL; |
2966 | ||
c3e7fba0 | 2967 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
99504dd4 VP |
2968 | if (r < 0) |
2969 | return r; | |
2970 | ||
4a84db4c | 2971 | r = install_info_discover_and_check(&ctx, &lp, name, 0, &info, changes, n_changes); |
76adb5b8 LP |
2972 | if (r < 0) |
2973 | return r; | |
99504dd4 | 2974 | |
c3e7fba0 | 2975 | new_path = strjoina(lp.persistent_config, "/" SPECIAL_DEFAULT_TARGET); |
9aa3d6b4 | 2976 | return create_symlink(&lp, info->path, new_path, flags & UNIT_FILE_FORCE, changes, n_changes); |
99504dd4 VP |
2977 | } |
2978 | ||
2979 | int unit_file_get_default( | |
b380b643 | 2980 | LookupScope scope, |
99504dd4 VP |
2981 | const char *root_dir, |
2982 | char **name) { | |
2983 | ||
c3e7fba0 | 2984 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
4a84db4c | 2985 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
0047d54d | 2986 | InstallInfo *info; |
0ec0deaa | 2987 | char *n; |
99504dd4 VP |
2988 | int r; |
2989 | ||
16ed0233 | 2990 | assert(scope >= 0); |
b380b643 | 2991 | assert(scope < _LOOKUP_SCOPE_MAX); |
16ed0233 LP |
2992 | assert(name); |
2993 | ||
c3e7fba0 | 2994 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
0ec0deaa LP |
2995 | if (r < 0) |
2996 | return r; | |
99504dd4 | 2997 | |
4a84db4c ZJS |
2998 | r = install_info_discover(&ctx, &lp, SPECIAL_DEFAULT_TARGET, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
2999 | &info, NULL, NULL); | |
0ec0deaa LP |
3000 | if (r < 0) |
3001 | return r; | |
4a84db4c | 3002 | r = install_info_may_process(info, &lp, NULL, 0); |
76adb5b8 LP |
3003 | if (r < 0) |
3004 | return r; | |
99504dd4 | 3005 | |
4a84db4c | 3006 | n = strdup(info->name); |
0ec0deaa LP |
3007 | if (!n) |
3008 | return -ENOMEM; | |
99504dd4 | 3009 | |
0ec0deaa LP |
3010 | *name = n; |
3011 | return 0; | |
99504dd4 VP |
3012 | } |
3013 | ||
d6d98276 | 3014 | int unit_file_lookup_state( |
b380b643 | 3015 | LookupScope scope, |
c3e7fba0 | 3016 | const LookupPaths *lp, |
0ec0deaa LP |
3017 | const char *name, |
3018 | UnitFileState *ret) { | |
83096483 | 3019 | |
4a84db4c | 3020 | _cleanup_(install_context_done) InstallContext ctx = { .scope = scope }; |
0047d54d | 3021 | InstallInfo *info; |
0ec0deaa LP |
3022 | UnitFileState state; |
3023 | int r; | |
83096483 | 3024 | |
c3e7fba0 | 3025 | assert(lp); |
0ec0deaa | 3026 | assert(name); |
83096483 | 3027 | |
7410616c | 3028 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
83096483 LP |
3029 | return -EINVAL; |
3030 | ||
4a84db4c ZJS |
3031 | r = install_info_discover(&ctx, lp, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3032 | &info, NULL, NULL); | |
0ec0deaa | 3033 | if (r < 0) |
3e8d06d9 ZJS |
3034 | return log_debug_errno(r, "Failed to discover unit %s: %m", name); |
3035 | ||
91810c8f | 3036 | assert(IN_SET(info->install_mode, INSTALL_MODE_REGULAR, INSTALL_MODE_MASKED)); |
4a84db4c | 3037 | log_debug("Found unit %s at %s (%s)", name, strna(info->path), |
91810c8f | 3038 | info->install_mode == INSTALL_MODE_REGULAR ? "regular file" : "mask"); |
83096483 | 3039 | |
0ec0deaa LP |
3040 | /* Shortcut things, if the caller just wants to know if this unit exists. */ |
3041 | if (!ret) | |
3042 | return 0; | |
83096483 | 3043 | |
91810c8f | 3044 | switch (info->install_mode) { |
67820a0c | 3045 | |
318031fd | 3046 | case INSTALL_MODE_MASKED: |
4a84db4c | 3047 | r = path_is_runtime(lp, info->path, true); |
385eb996 LP |
3048 | if (r < 0) |
3049 | return r; | |
3050 | ||
3051 | state = r > 0 ? UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED; | |
0ec0deaa | 3052 | break; |
83096483 | 3053 | |
318031fd | 3054 | case INSTALL_MODE_REGULAR: |
15d7ab87 | 3055 | /* Check if the name we were querying is actually an alias */ |
4a84db4c | 3056 | if (!streq(name, basename(info->path)) && !unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) { |
15d7ab87 ZJS |
3057 | state = UNIT_FILE_ALIAS; |
3058 | break; | |
3059 | } | |
3060 | ||
4a84db4c | 3061 | r = path_is_generator(lp, info->path); |
f4139308 LP |
3062 | if (r < 0) |
3063 | return r; | |
3064 | if (r > 0) { | |
3065 | state = UNIT_FILE_GENERATED; | |
3066 | break; | |
3067 | } | |
3068 | ||
4a84db4c | 3069 | r = path_is_transient(lp, info->path); |
e4fca67f LP |
3070 | if (r < 0) |
3071 | return r; | |
3072 | if (r > 0) { | |
3073 | state = UNIT_FILE_TRANSIENT; | |
3074 | break; | |
3075 | } | |
3076 | ||
5cd8ae31 ZJS |
3077 | /* Check if any of the Alias= symlinks have been created. |
3078 | * We ignore other aliases, and only check those that would | |
3079 | * be created by systemctl enable for this unit. */ | |
4a84db4c | 3080 | r = find_symlinks_in_scope(scope, lp, info, true, &state); |
d9b4b48f ZJS |
3081 | if (r < 0) |
3082 | return r; | |
3083 | if (r > 0) | |
3084 | break; | |
3085 | ||
3086 | /* Check if the file is known under other names. If it is, | |
3087 | * it might be in use. Report that as UNIT_FILE_INDIRECT. */ | |
4a84db4c | 3088 | r = find_symlinks_in_scope(scope, lp, info, false, &state); |
d9e5e694 ZJS |
3089 | if (r < 0) |
3090 | return r; | |
d9b4b48f ZJS |
3091 | if (r > 0) |
3092 | state = UNIT_FILE_INDIRECT; | |
3093 | else { | |
0047d54d | 3094 | if (install_info_has_rules(info)) |
0ec0deaa | 3095 | state = UNIT_FILE_DISABLED; |
0047d54d | 3096 | else if (install_info_has_also(info)) |
0ec0deaa LP |
3097 | state = UNIT_FILE_INDIRECT; |
3098 | else | |
3099 | state = UNIT_FILE_STATIC; | |
3100 | } | |
83096483 | 3101 | |
0ec0deaa LP |
3102 | break; |
3103 | ||
3104 | default: | |
04499a70 | 3105 | assert_not_reached(); |
83096483 LP |
3106 | } |
3107 | ||
0ec0deaa LP |
3108 | *ret = state; |
3109 | return 0; | |
83096483 LP |
3110 | } |
3111 | ||
0ec0deaa | 3112 | int unit_file_get_state( |
b380b643 | 3113 | LookupScope scope, |
a8ffe6fb | 3114 | const char *root_dir, |
0ec0deaa LP |
3115 | const char *name, |
3116 | UnitFileState *ret) { | |
a8ffe6fb | 3117 | |
c3e7fba0 | 3118 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
a8ffe6fb ZJS |
3119 | int r; |
3120 | ||
3121 | assert(scope >= 0); | |
b380b643 | 3122 | assert(scope < _LOOKUP_SCOPE_MAX); |
a8ffe6fb ZJS |
3123 | assert(name); |
3124 | ||
c3e7fba0 | 3125 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
a8ffe6fb ZJS |
3126 | if (r < 0) |
3127 | return r; | |
3128 | ||
c3e7fba0 | 3129 | return unit_file_lookup_state(scope, &lp, name, ret); |
a8ffe6fb ZJS |
3130 | } |
3131 | ||
b380b643 | 3132 | int unit_file_exists(LookupScope scope, const LookupPaths *lp, const char *name) { |
4a84db4c | 3133 | _cleanup_(install_context_done) InstallContext c = { .scope = scope }; |
e735decc LP |
3134 | int r; |
3135 | ||
c3e7fba0 | 3136 | assert(lp); |
e735decc LP |
3137 | assert(name); |
3138 | ||
3139 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) | |
3140 | return -EINVAL; | |
3141 | ||
4a84db4c | 3142 | r = install_info_discover(&c, lp, name, 0, NULL, NULL, NULL); |
e735decc LP |
3143 | if (r == -ENOENT) |
3144 | return 0; | |
3145 | if (r < 0) | |
3146 | return r; | |
3147 | ||
3148 | return 1; | |
3149 | } | |
3150 | ||
4c9565ee RB |
3151 | static int split_pattern_into_name_and_instances(const char *pattern, char **out_unit_name, char ***out_instances) { |
3152 | _cleanup_strv_free_ char **instances = NULL; | |
3153 | _cleanup_free_ char *unit_name = NULL; | |
3154 | int r; | |
3155 | ||
3156 | assert(pattern); | |
3157 | assert(out_instances); | |
3158 | assert(out_unit_name); | |
3159 | ||
82bd4da7 | 3160 | r = extract_first_word(&pattern, &unit_name, NULL, EXTRACT_RETAIN_ESCAPE); |
4c9565ee RB |
3161 | if (r < 0) |
3162 | return r; | |
3163 | ||
3164 | /* We handle the instances logic when unit name is extracted */ | |
3165 | if (pattern) { | |
3166 | /* We only create instances when a rule of templated unit | |
3167 | * is seen. A rule like enable foo@.service a b c will | |
3168 | * result in an array of (a, b, c) as instance names */ | |
3169 | if (!unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) | |
3170 | return -EINVAL; | |
3171 | ||
3172 | instances = strv_split(pattern, WHITESPACE); | |
3173 | if (!instances) | |
3174 | return -ENOMEM; | |
3175 | ||
3176 | *out_instances = TAKE_PTR(instances); | |
3177 | } | |
3178 | ||
3179 | *out_unit_name = TAKE_PTR(unit_name); | |
3180 | ||
3181 | return 0; | |
3182 | } | |
3183 | ||
b380b643 | 3184 | static int presets_find_config(LookupScope scope, const char *root_dir, char ***files) { |
10fd1d46 ZJS |
3185 | static const char* const system_dirs[] = {CONF_PATHS("systemd/system-preset"), NULL}; |
3186 | static const char* const user_dirs[] = {CONF_PATHS_USR("systemd/user-preset"), NULL}; | |
f7767d76 | 3187 | const char* const* dirs; |
83096483 LP |
3188 | |
3189 | assert(scope >= 0); | |
b380b643 | 3190 | assert(scope < _LOOKUP_SCOPE_MAX); |
0ec0deaa | 3191 | |
b380b643 | 3192 | if (scope == LOOKUP_SCOPE_SYSTEM) |
10fd1d46 | 3193 | dirs = system_dirs; |
b380b643 | 3194 | else if (IN_SET(scope, LOOKUP_SCOPE_GLOBAL, LOOKUP_SCOPE_USER)) |
10fd1d46 | 3195 | dirs = user_dirs; |
a05294ff | 3196 | else |
04499a70 | 3197 | assert_not_reached(); |
83096483 | 3198 | |
f7767d76 | 3199 | return conf_files_list_strv(files, ".preset", root_dir, 0, dirs); |
e0b8a238 ZJS |
3200 | } |
3201 | ||
b380b643 | 3202 | static int read_presets(LookupScope scope, const char *root_dir, UnitFilePresets *presets) { |
8f7b2566 | 3203 | _cleanup_(unit_file_presets_freep) UnitFilePresets ps = {}; |
e0b8a238 | 3204 | _cleanup_strv_free_ char **files = NULL; |
e0b8a238 ZJS |
3205 | int r; |
3206 | ||
3207 | assert(scope >= 0); | |
b380b643 | 3208 | assert(scope < _LOOKUP_SCOPE_MAX); |
e0b8a238 ZJS |
3209 | assert(presets); |
3210 | ||
3211 | r = presets_find_config(scope, root_dir, &files); | |
83096483 LP |
3212 | if (r < 0) |
3213 | return r; | |
3214 | ||
cba2ef02 | 3215 | STRV_FOREACH(p, files) { |
c2b2df60 | 3216 | _cleanup_fclose_ FILE *f = NULL; |
d544d1a4 | 3217 | int n = 0; |
83096483 | 3218 | |
cba2ef02 | 3219 | f = fopen(*p, "re"); |
83096483 LP |
3220 | if (!f) { |
3221 | if (errno == ENOENT) | |
3222 | continue; | |
3223 | ||
d9e5e694 | 3224 | return -errno; |
83096483 LP |
3225 | } |
3226 | ||
bef77f37 LP |
3227 | for (;;) { |
3228 | _cleanup_free_ char *line = NULL; | |
8f7b2566 | 3229 | UnitFilePresetRule rule = {}; |
0ec0deaa LP |
3230 | const char *parameter; |
3231 | char *l; | |
83096483 | 3232 | |
bef77f37 LP |
3233 | r = read_line(f, LONG_LINE_MAX, &line); |
3234 | if (r < 0) | |
3235 | return r; | |
3236 | if (r == 0) | |
3237 | break; | |
3238 | ||
83096483 | 3239 | l = strstrip(line); |
d544d1a4 | 3240 | n++; |
83096483 | 3241 | |
0ec0deaa LP |
3242 | if (isempty(l)) |
3243 | continue; | |
3244 | if (strchr(COMMENTS, *l)) | |
83096483 LP |
3245 | continue; |
3246 | ||
0ec0deaa LP |
3247 | parameter = first_word(l, "enable"); |
3248 | if (parameter) { | |
4c9565ee RB |
3249 | char *unit_name; |
3250 | char **instances = NULL; | |
d9e5e694 | 3251 | |
4c9565ee RB |
3252 | /* Unit_name will remain the same as parameter when no instances are specified */ |
3253 | r = split_pattern_into_name_and_instances(parameter, &unit_name, &instances); | |
3254 | if (r < 0) { | |
8ac3c9ab | 3255 | log_syntax(NULL, LOG_WARNING, *p, n, r, "Couldn't parse line '%s'. Ignoring.", line); |
4c9565ee RB |
3256 | continue; |
3257 | } | |
8965d9f8 | 3258 | |
8f7b2566 | 3259 | rule = (UnitFilePresetRule) { |
4c9565ee | 3260 | .pattern = unit_name, |
8965d9f8 | 3261 | .action = PRESET_ENABLE, |
4c9565ee | 3262 | .instances = instances, |
8965d9f8 | 3263 | }; |
0ec0deaa | 3264 | } |
83096483 | 3265 | |
0ec0deaa LP |
3266 | parameter = first_word(l, "disable"); |
3267 | if (parameter) { | |
8965d9f8 | 3268 | char *pattern; |
d9e5e694 | 3269 | |
8965d9f8 AC |
3270 | pattern = strdup(parameter); |
3271 | if (!pattern) | |
3272 | return -ENOMEM; | |
3273 | ||
8f7b2566 | 3274 | rule = (UnitFilePresetRule) { |
8965d9f8 AC |
3275 | .pattern = pattern, |
3276 | .action = PRESET_DISABLE, | |
3277 | }; | |
3278 | } | |
3279 | ||
3280 | if (rule.action) { | |
319a4f4b | 3281 | if (!GREEDY_REALLOC(ps.rules, ps.n_rules + 1)) |
8965d9f8 AC |
3282 | return -ENOMEM; |
3283 | ||
3284 | ps.rules[ps.n_rules++] = rule; | |
0ec0deaa LP |
3285 | continue; |
3286 | } | |
3287 | ||
d544d1a4 | 3288 | log_syntax(NULL, LOG_WARNING, *p, n, 0, "Couldn't parse line '%s'. Ignoring.", line); |
83096483 | 3289 | } |
83096483 LP |
3290 | } |
3291 | ||
8f7b2566 | 3292 | ps.initialized = true; |
8965d9f8 | 3293 | *presets = ps; |
8f7b2566 | 3294 | ps = (UnitFilePresets){}; |
8965d9f8 AC |
3295 | |
3296 | return 0; | |
3297 | } | |
3298 | ||
4c9565ee | 3299 | static int pattern_match_multiple_instances( |
8f7b2566 | 3300 | const UnitFilePresetRule rule, |
4c9565ee RB |
3301 | const char *unit_name, |
3302 | char ***ret) { | |
3303 | ||
3304 | _cleanup_free_ char *templated_name = NULL; | |
3305 | int r; | |
3306 | ||
3307 | /* If no ret is needed or the rule itself does not have instances | |
5238e957 | 3308 | * initialized, we return not matching */ |
4c9565ee RB |
3309 | if (!ret || !rule.instances) |
3310 | return 0; | |
3311 | ||
3312 | r = unit_name_template(unit_name, &templated_name); | |
3313 | if (r < 0) | |
3314 | return r; | |
3315 | if (!streq(rule.pattern, templated_name)) | |
3316 | return 0; | |
3317 | ||
3318 | /* Compose a list of specified instances when unit name is a template */ | |
3319 | if (unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) { | |
4c9565ee | 3320 | _cleanup_strv_free_ char **out_strv = NULL; |
4c9565ee RB |
3321 | |
3322 | STRV_FOREACH(iter, rule.instances) { | |
3323 | _cleanup_free_ char *name = NULL; | |
47ab95fe ZJS |
3324 | |
3325 | r = unit_name_replace_instance(unit_name, *iter, &name); | |
4c9565ee RB |
3326 | if (r < 0) |
3327 | return r; | |
47ab95fe ZJS |
3328 | |
3329 | r = strv_consume(&out_strv, TAKE_PTR(name)); | |
4c9565ee RB |
3330 | if (r < 0) |
3331 | return r; | |
3332 | } | |
3333 | ||
3334 | *ret = TAKE_PTR(out_strv); | |
3335 | return 1; | |
3336 | } else { | |
3337 | /* We now know the input unit name is an instance name */ | |
3338 | _cleanup_free_ char *instance_name = NULL; | |
3339 | ||
3340 | r = unit_name_to_instance(unit_name, &instance_name); | |
3341 | if (r < 0) | |
3342 | return r; | |
3343 | ||
3344 | if (strv_find(rule.instances, instance_name)) | |
3345 | return 1; | |
3346 | } | |
3347 | return 0; | |
3348 | } | |
3349 | ||
8f7b2566 | 3350 | static int query_presets(const char *name, const UnitFilePresets *presets, char ***instance_name_list) { |
8965d9f8 | 3351 | PresetAction action = PRESET_UNKNOWN; |
de8be28e | 3352 | |
8965d9f8 AC |
3353 | if (!unit_name_is_valid(name, UNIT_NAME_ANY)) |
3354 | return -EINVAL; | |
3355 | ||
de8be28e | 3356 | for (size_t i = 0; i < presets->n_rules; i++) |
8f7b2566 ZJS |
3357 | if (pattern_match_multiple_instances(presets->rules[i], name, instance_name_list) > 0 || |
3358 | fnmatch(presets->rules[i].pattern, name, FNM_NOESCAPE) == 0) { | |
3359 | action = presets->rules[i].action; | |
8965d9f8 AC |
3360 | break; |
3361 | } | |
3362 | ||
3363 | switch (action) { | |
3364 | case PRESET_UNKNOWN: | |
3365 | log_debug("Preset files don't specify rule for %s. Enabling.", name); | |
3366 | return 1; | |
3367 | case PRESET_ENABLE: | |
de010b0b | 3368 | if (instance_name_list && *instance_name_list) |
4c9565ee RB |
3369 | STRV_FOREACH(s, *instance_name_list) |
3370 | log_debug("Preset files say enable %s.", *s); | |
de010b0b | 3371 | else |
4c9565ee | 3372 | log_debug("Preset files say enable %s.", name); |
8965d9f8 AC |
3373 | return 1; |
3374 | case PRESET_DISABLE: | |
3375 | log_debug("Preset files say disable %s.", name); | |
3376 | return 0; | |
3377 | default: | |
04499a70 | 3378 | assert_not_reached(); |
8965d9f8 AC |
3379 | } |
3380 | } | |
3381 | ||
b380b643 | 3382 | int unit_file_query_preset(LookupScope scope, const char *root_dir, const char *name, UnitFilePresets *cached) { |
8f7b2566 | 3383 | _cleanup_(unit_file_presets_freep) UnitFilePresets tmp = {}; |
8965d9f8 AC |
3384 | int r; |
3385 | ||
8f7b2566 ZJS |
3386 | if (!cached) |
3387 | cached = &tmp; | |
3388 | if (!cached->initialized) { | |
3389 | r = read_presets(scope, root_dir, cached); | |
3390 | if (r < 0) | |
3391 | return r; | |
3392 | } | |
8965d9f8 | 3393 | |
8f7b2566 | 3394 | return query_presets(name, cached, NULL); |
83096483 LP |
3395 | } |
3396 | ||
0ec0deaa | 3397 | static int execute_preset( |
9b69770a | 3398 | UnitFileFlags file_flags, |
0ec0deaa LP |
3399 | InstallContext *plus, |
3400 | InstallContext *minus, | |
c3e7fba0 | 3401 | const LookupPaths *lp, |
1830ac51 | 3402 | const char *config_path, |
0ec0deaa LP |
3403 | char **files, |
3404 | UnitFilePresetMode mode, | |
cd44ec5a | 3405 | InstallChange **changes, |
da6053d0 | 3406 | size_t *n_changes) { |
0ec0deaa | 3407 | |
1830ac51 | 3408 | int r; |
0ec0deaa LP |
3409 | |
3410 | assert(plus); | |
3411 | assert(minus); | |
c3e7fba0 | 3412 | assert(lp); |
1830ac51 | 3413 | assert(config_path); |
0ec0deaa LP |
3414 | |
3415 | if (mode != UNIT_FILE_PRESET_ENABLE_ONLY) { | |
3416 | _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; | |
3417 | ||
4a84db4c | 3418 | r = install_context_mark_for_removal(minus, lp, &remove_symlinks_to, config_path, changes, n_changes); |
1830ac51 MB |
3419 | if (r < 0) |
3420 | return r; | |
0ec0deaa | 3421 | |
c3e7fba0 | 3422 | r = remove_marked_symlinks(remove_symlinks_to, config_path, lp, false, changes, n_changes); |
1830ac51 MB |
3423 | } else |
3424 | r = 0; | |
0ec0deaa LP |
3425 | |
3426 | if (mode != UNIT_FILE_PRESET_DISABLE_ONLY) { | |
1830ac51 MB |
3427 | int q; |
3428 | ||
0ec0deaa | 3429 | /* Returns number of symlinks that where supposed to be installed. */ |
4a84db4c | 3430 | q = install_context_apply(plus, lp, |
ad5fdd39 | 3431 | file_flags | UNIT_FILE_IGNORE_AUXILIARY_FAILURE, |
4a84db4c ZJS |
3432 | config_path, |
3433 | SEARCH_LOAD, changes, n_changes); | |
1830ac51 MB |
3434 | if (r >= 0) { |
3435 | if (q < 0) | |
3436 | r = q; | |
3437 | else | |
3438 | r += q; | |
3439 | } | |
0ec0deaa LP |
3440 | } |
3441 | ||
3442 | return r; | |
3443 | } | |
3444 | ||
3445 | static int preset_prepare_one( | |
b380b643 | 3446 | LookupScope scope, |
0ec0deaa LP |
3447 | InstallContext *plus, |
3448 | InstallContext *minus, | |
c3e7fba0 | 3449 | LookupPaths *lp, |
af3d8113 | 3450 | const char *name, |
8f7b2566 | 3451 | const UnitFilePresets *presets, |
cd44ec5a | 3452 | InstallChange **changes, |
da6053d0 | 3453 | size_t *n_changes) { |
0ec0deaa | 3454 | |
4a84db4c | 3455 | _cleanup_(install_context_done) InstallContext tmp = { .scope = scope }; |
4c9565ee | 3456 | _cleanup_strv_free_ char **instance_name_list = NULL; |
0047d54d | 3457 | InstallInfo *info; |
0ec0deaa LP |
3458 | int r; |
3459 | ||
11e11fd5 | 3460 | if (install_info_find(plus, name) || install_info_find(minus, name)) |
0ec0deaa LP |
3461 | return 0; |
3462 | ||
4a84db4c ZJS |
3463 | r = install_info_discover(&tmp, lp, name, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3464 | &info, changes, n_changes); | |
11e11fd5 ZJS |
3465 | if (r < 0) |
3466 | return r; | |
4a84db4c ZJS |
3467 | if (!streq(name, info->name)) { |
3468 | log_debug("Skipping %s because it is an alias for %s.", name, info->name); | |
11e11fd5 ZJS |
3469 | return 0; |
3470 | } | |
3471 | ||
4c9565ee | 3472 | r = query_presets(name, presets, &instance_name_list); |
0ec0deaa LP |
3473 | if (r < 0) |
3474 | return r; | |
3475 | ||
3476 | if (r > 0) { | |
de010b0b | 3477 | if (instance_name_list) |
4c9565ee | 3478 | STRV_FOREACH(s, instance_name_list) { |
4a84db4c ZJS |
3479 | r = install_info_discover_and_check(plus, lp, *s, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3480 | &info, changes, n_changes); | |
4c9565ee RB |
3481 | if (r < 0) |
3482 | return r; | |
3483 | } | |
de010b0b | 3484 | else { |
4a84db4c ZJS |
3485 | r = install_info_discover_and_check(plus, lp, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3486 | &info, changes, n_changes); | |
4c9565ee RB |
3487 | if (r < 0) |
3488 | return r; | |
3489 | } | |
0ec0deaa | 3490 | |
0ec0deaa | 3491 | } else |
4a84db4c ZJS |
3492 | r = install_info_discover(minus, lp, name, SEARCH_FOLLOW_CONFIG_SYMLINKS, |
3493 | &info, changes, n_changes); | |
0ec0deaa LP |
3494 | |
3495 | return r; | |
3496 | } | |
3497 | ||
83096483 | 3498 | int unit_file_preset( |
b380b643 | 3499 | LookupScope scope, |
9b69770a | 3500 | UnitFileFlags file_flags, |
83096483 | 3501 | const char *root_dir, |
0f87041f | 3502 | char **names, |
d309c1c3 | 3503 | UnitFilePresetMode mode, |
cd44ec5a | 3504 | InstallChange **changes, |
da6053d0 | 3505 | size_t *n_changes) { |
83096483 | 3506 | |
59ccf93d | 3507 | _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; |
c3e7fba0 | 3508 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
8f7b2566 | 3509 | _cleanup_(unit_file_presets_freep) UnitFilePresets presets = {}; |
1830ac51 | 3510 | const char *config_path; |
0ec0deaa | 3511 | int r; |
83096483 LP |
3512 | |
3513 | assert(scope >= 0); | |
b380b643 | 3514 | assert(scope < _LOOKUP_SCOPE_MAX); |
b364c4de | 3515 | assert(mode < _UNIT_FILE_PRESET_MODE_MAX); |
83096483 | 3516 | |
c3e7fba0 | 3517 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
83096483 LP |
3518 | if (r < 0) |
3519 | return r; | |
3520 | ||
c3e7fba0 | 3521 | config_path = (file_flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
1830ac51 MB |
3522 | if (!config_path) |
3523 | return -ENXIO; | |
3524 | ||
8965d9f8 AC |
3525 | r = read_presets(scope, root_dir, &presets); |
3526 | if (r < 0) | |
3527 | return r; | |
83096483 | 3528 | |
0f87041f ZJS |
3529 | STRV_FOREACH(name, names) { |
3530 | r = preset_prepare_one(scope, &plus, &minus, &lp, *name, &presets, changes, n_changes); | |
83096483 | 3531 | if (r < 0) |
d9e5e694 | 3532 | return r; |
83096483 LP |
3533 | } |
3534 | ||
0f87041f | 3535 | return execute_preset(file_flags, &plus, &minus, &lp, config_path, names, mode, changes, n_changes); |
d309c1c3 LP |
3536 | } |
3537 | ||
3538 | int unit_file_preset_all( | |
b380b643 | 3539 | LookupScope scope, |
9b69770a | 3540 | UnitFileFlags file_flags, |
d309c1c3 LP |
3541 | const char *root_dir, |
3542 | UnitFilePresetMode mode, | |
cd44ec5a | 3543 | InstallChange **changes, |
da6053d0 | 3544 | size_t *n_changes) { |
d309c1c3 | 3545 | |
59ccf93d | 3546 | _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; |
c3e7fba0 | 3547 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
8f7b2566 | 3548 | _cleanup_(unit_file_presets_freep) UnitFilePresets presets = {}; |
1830ac51 | 3549 | const char *config_path = NULL; |
0ec0deaa | 3550 | int r; |
d309c1c3 LP |
3551 | |
3552 | assert(scope >= 0); | |
b380b643 | 3553 | assert(scope < _LOOKUP_SCOPE_MAX); |
b364c4de | 3554 | assert(mode < _UNIT_FILE_PRESET_MODE_MAX); |
d309c1c3 | 3555 | |
c3e7fba0 | 3556 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
d309c1c3 LP |
3557 | if (r < 0) |
3558 | return r; | |
3559 | ||
c3e7fba0 | 3560 | config_path = (file_flags & UNIT_FILE_RUNTIME) ? lp.runtime_config : lp.persistent_config; |
1830ac51 MB |
3561 | if (!config_path) |
3562 | return -ENXIO; | |
3563 | ||
8965d9f8 AC |
3564 | r = read_presets(scope, root_dir, &presets); |
3565 | if (r < 0) | |
3566 | return r; | |
3567 | ||
c3e7fba0 | 3568 | STRV_FOREACH(i, lp.search_path) { |
d309c1c3 | 3569 | _cleanup_closedir_ DIR *d = NULL; |
d309c1c3 | 3570 | |
401017e0 | 3571 | d = opendir(*i); |
d309c1c3 LP |
3572 | if (!d) { |
3573 | if (errno == ENOENT) | |
3574 | continue; | |
3575 | ||
3576 | return -errno; | |
3577 | } | |
3578 | ||
d25e100b | 3579 | FOREACH_DIRENT(de, d, return -errno) { |
1830ac51 | 3580 | |
7410616c | 3581 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
d309c1c3 LP |
3582 | continue; |
3583 | ||
0ec0deaa | 3584 | if (!IN_SET(de->d_type, DT_LNK, DT_REG)) |
d309c1c3 LP |
3585 | continue; |
3586 | ||
c3e7fba0 | 3587 | r = preset_prepare_one(scope, &plus, &minus, &lp, de->d_name, &presets, changes, n_changes); |
4a203a51 | 3588 | if (r < 0 && |
cbfdbffb | 3589 | !IN_SET(r, -EEXIST, -ERFKILL, -EADDRNOTAVAIL, -EBADSLT, -EIDRM, -EUCLEAN, -ELOOP, -ENOENT, -EUNATCH, -EXDEV)) |
4a203a51 | 3590 | /* Ignore generated/transient/missing/invalid units when applying preset, propagate other errors. |
cd44ec5a | 3591 | * Coordinate with install_changes_dump() above. */ |
d309c1c3 LP |
3592 | return r; |
3593 | } | |
3594 | } | |
3595 | ||
4a84db4c | 3596 | return execute_preset(file_flags, &plus, &minus, &lp, config_path, NULL, mode, changes, n_changes); |
83096483 LP |
3597 | } |
3598 | ||
75db809a | 3599 | static UnitFileList* unit_file_list_free_one(UnitFileList *f) { |
59ccf93d | 3600 | if (!f) |
75db809a | 3601 | return NULL; |
d9e5e694 | 3602 | |
59ccf93d | 3603 | free(f->path); |
75db809a | 3604 | return mfree(f); |
d9e5e694 | 3605 | } |
59ccf93d | 3606 | |
0ec0deaa | 3607 | Hashmap* unit_file_list_free(Hashmap *h) { |
224b0e7a | 3608 | return hashmap_free_with_destructor(h, unit_file_list_free_one); |
0ec0deaa LP |
3609 | } |
3610 | ||
59ccf93d | 3611 | DEFINE_TRIVIAL_CLEANUP_FUNC(UnitFileList*, unit_file_list_free_one); |
d9e5e694 | 3612 | |
83096483 | 3613 | int unit_file_get_list( |
b380b643 | 3614 | LookupScope scope, |
83096483 | 3615 | const char *root_dir, |
313fe66f | 3616 | Hashmap *h, |
3617 | char **states, | |
3618 | char **patterns) { | |
83096483 | 3619 | |
c3e7fba0 | 3620 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
83096483 LP |
3621 | int r; |
3622 | ||
3623 | assert(scope >= 0); | |
b380b643 | 3624 | assert(scope < _LOOKUP_SCOPE_MAX); |
83096483 LP |
3625 | assert(h); |
3626 | ||
c3e7fba0 | 3627 | r = lookup_paths_init(&lp, scope, 0, root_dir); |
83096483 LP |
3628 | if (r < 0) |
3629 | return r; | |
3630 | ||
c3e7fba0 | 3631 | STRV_FOREACH(dirname, lp.search_path) { |
da39f6a6 | 3632 | _cleanup_closedir_ DIR *d = NULL; |
83096483 | 3633 | |
9c894b85 | 3634 | d = opendir(*dirname); |
83096483 LP |
3635 | if (!d) { |
3636 | if (errno == ENOENT) | |
3637 | continue; | |
a1feacf7 | 3638 | if (IN_SET(errno, ENOTDIR, EACCES)) { |
9c894b85 | 3639 | log_debug_errno(errno, "Failed to open \"%s\": %m", *dirname); |
a1feacf7 ZJS |
3640 | continue; |
3641 | } | |
83096483 | 3642 | |
d9e5e694 | 3643 | return -errno; |
83096483 LP |
3644 | } |
3645 | ||
d25e100b | 3646 | FOREACH_DIRENT(de, d, return -errno) { |
59ccf93d | 3647 | _cleanup_(unit_file_list_free_onep) UnitFileList *f = NULL; |
83096483 | 3648 | |
7410616c | 3649 | if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY)) |
83096483 LP |
3650 | continue; |
3651 | ||
313fe66f | 3652 | if (!strv_fnmatch_or_empty(patterns, de->d_name, FNM_NOESCAPE)) |
3653 | continue; | |
3654 | ||
83096483 LP |
3655 | if (hashmap_get(h, de->d_name)) |
3656 | continue; | |
3657 | ||
da39f6a6 | 3658 | if (!IN_SET(de->d_type, DT_LNK, DT_REG)) |
83096483 LP |
3659 | continue; |
3660 | ||
3661 | f = new0(UnitFileList, 1); | |
d9e5e694 ZJS |
3662 | if (!f) |
3663 | return -ENOMEM; | |
83096483 | 3664 | |
9c894b85 | 3665 | f->path = path_make_absolute(de->d_name, *dirname); |
d9e5e694 ZJS |
3666 | if (!f->path) |
3667 | return -ENOMEM; | |
83096483 | 3668 | |
c3e7fba0 | 3669 | r = unit_file_lookup_state(scope, &lp, de->d_name, &f->state); |
d9e5e694 | 3670 | if (r < 0) |
0ec0deaa | 3671 | f->state = UNIT_FILE_BAD; |
81fc054d | 3672 | |
313fe66f | 3673 | if (!strv_isempty(states) && |
3674 | !strv_contains(states, unit_file_state_to_string(f->state))) | |
3675 | continue; | |
3676 | ||
2b6bf07d | 3677 | r = hashmap_put(h, basename(f->path), f); |
d9e5e694 ZJS |
3678 | if (r < 0) |
3679 | return r; | |
0ec0deaa | 3680 | |
d9e5e694 | 3681 | f = NULL; /* prevent cleanup */ |
83096483 LP |
3682 | } |
3683 | } | |
3684 | ||
77cd2c87 | 3685 | return 0; |
83096483 LP |
3686 | } |
3687 | ||
3688 | static const char* const unit_file_state_table[_UNIT_FILE_STATE_MAX] = { | |
babccf14 | 3689 | [UNIT_FILE_ENABLED] = "enabled", |
771faa9a | 3690 | [UNIT_FILE_ENABLED_RUNTIME] = "enabled-runtime", |
babccf14 ZJS |
3691 | [UNIT_FILE_LINKED] = "linked", |
3692 | [UNIT_FILE_LINKED_RUNTIME] = "linked-runtime", | |
15d7ab87 | 3693 | [UNIT_FILE_ALIAS] = "alias", |
babccf14 ZJS |
3694 | [UNIT_FILE_MASKED] = "masked", |
3695 | [UNIT_FILE_MASKED_RUNTIME] = "masked-runtime", | |
3696 | [UNIT_FILE_STATIC] = "static", | |
3697 | [UNIT_FILE_DISABLED] = "disabled", | |
3698 | [UNIT_FILE_INDIRECT] = "indirect", | |
3699 | [UNIT_FILE_GENERATED] = "generated", | |
3700 | [UNIT_FILE_TRANSIENT] = "transient", | |
3701 | [UNIT_FILE_BAD] = "bad", | |
83096483 LP |
3702 | }; |
3703 | ||
3704 | DEFINE_STRING_TABLE_LOOKUP(unit_file_state, UnitFileState); | |
c0576cd6 | 3705 | |
f8662fee | 3706 | static const char* const install_change_type_table[_INSTALL_CHANGE_TYPE_MAX] = { |
1308f72e ZJS |
3707 | [INSTALL_CHANGE_SYMLINK] = "symlink", |
3708 | [INSTALL_CHANGE_UNLINK] = "unlink", | |
3709 | [INSTALL_CHANGE_IS_MASKED] = "masked", | |
bf3b0d5f | 3710 | [INSTALL_CHANGE_IS_MASKED_GENERATOR] = "masked by generator", |
1308f72e ZJS |
3711 | [INSTALL_CHANGE_IS_DANGLING] = "dangling", |
3712 | [INSTALL_CHANGE_DESTINATION_NOT_PRESENT] = "destination not present", | |
3713 | [INSTALL_CHANGE_AUXILIARY_FAILED] = "auxiliary unit failed", | |
c0576cd6 LP |
3714 | }; |
3715 | ||
f8662fee | 3716 | DEFINE_STRING_TABLE_LOOKUP(install_change_type, InstallChangeType); |
d309c1c3 | 3717 | |
b364c4de | 3718 | static const char* const unit_file_preset_mode_table[_UNIT_FILE_PRESET_MODE_MAX] = { |
babccf14 ZJS |
3719 | [UNIT_FILE_PRESET_FULL] = "full", |
3720 | [UNIT_FILE_PRESET_ENABLE_ONLY] = "enable-only", | |
d309c1c3 LP |
3721 | [UNIT_FILE_PRESET_DISABLE_ONLY] = "disable-only", |
3722 | }; | |
3723 | ||
3724 | DEFINE_STRING_TABLE_LOOKUP(unit_file_preset_mode, UnitFilePresetMode); |