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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
84e3543e LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2010 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
8 | under the terms of the GNU Lesser General Public License as published by |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
84e3543e LP |
10 | (at your option) any later version. |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 15 | Lesser General Public License for more details. |
84e3543e | 16 | |
5430f7f2 | 17 | You should have received a copy of the GNU Lesser General Public License |
84e3543e LP |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
19 | ***/ | |
20 | ||
cf0fbc49 | 21 | #include <errno.h> |
84e3543e | 22 | #include <stdio.h> |
cf0fbc49 | 23 | #include <stdlib.h> |
67445f4e | 24 | #include <string.h> |
84e3543e | 25 | |
b5efdb8a | 26 | #include "alloc-util.h" |
a1f31f47 ZJS |
27 | #include "fileio.h" |
28 | #include "fs-util.h" | |
a8ffe6fb | 29 | #include "install.h" |
a8fbdf54 TA |
30 | #include "log.h" |
31 | #include "macro.h" | |
cd64fd56 | 32 | #include "mkdir.h" |
07630cea | 33 | #include "path-lookup.h" |
cf0fbc49 | 34 | #include "path-util.h" |
80b1ae32 | 35 | #include "rm-rf.h" |
e4bb56c7 | 36 | #include "stat-util.h" |
cf0fbc49 TA |
37 | #include "string-util.h" |
38 | #include "strv.h" | |
c4997074 | 39 | #include "user-util.h" |
cf0fbc49 | 40 | #include "util.h" |
84e3543e | 41 | |
ca4adeb7 | 42 | int xdg_user_runtime_dir(char **ret, const char *suffix) { |
10e87ee7 | 43 | const char *e; |
205dd21e LP |
44 | char *j; |
45 | ||
46 | assert(ret); | |
80b1ae32 | 47 | assert(suffix); |
10e87ee7 | 48 | |
80b1ae32 LP |
49 | e = getenv("XDG_RUNTIME_DIR"); |
50 | if (!e) | |
51 | return -ENXIO; | |
205dd21e | 52 | |
80b1ae32 LP |
53 | j = strappend(e, suffix); |
54 | if (!j) | |
55 | return -ENOMEM; | |
10e87ee7 | 56 | |
205dd21e | 57 | *ret = j; |
10e87ee7 LP |
58 | return 0; |
59 | } | |
60 | ||
ca4adeb7 | 61 | int xdg_user_config_dir(char **ret, const char *suffix) { |
718880ba | 62 | const char *e; |
205dd21e | 63 | char *j; |
c4997074 | 64 | int r; |
205dd21e LP |
65 | |
66 | assert(ret); | |
718880ba | 67 | |
80b1ae32 LP |
68 | e = getenv("XDG_CONFIG_HOME"); |
69 | if (e) | |
70 | j = strappend(e, suffix); | |
71 | else { | |
c4997074 | 72 | _cleanup_free_ char *home = NULL; |
80b1ae32 | 73 | |
c4997074 LP |
74 | r = get_home_dir(&home); |
75 | if (r < 0) | |
76 | return r; | |
80b1ae32 | 77 | |
605405c6 | 78 | j = strjoin(home, "/.config", suffix); |
80b1ae32 | 79 | } |
718880ba | 80 | |
205dd21e LP |
81 | if (!j) |
82 | return -ENOMEM; | |
718880ba | 83 | |
205dd21e | 84 | *ret = j; |
718880ba SA |
85 | return 0; |
86 | } | |
87 | ||
ca4adeb7 | 88 | int xdg_user_data_dir(char **ret, const char *suffix) { |
e801700e | 89 | const char *e; |
205dd21e | 90 | char *j; |
c4997074 | 91 | int r; |
205dd21e LP |
92 | |
93 | assert(ret); | |
a7527131 | 94 | assert(suffix); |
e801700e ZJS |
95 | |
96 | /* We don't treat /etc/xdg/systemd here as the spec | |
61233823 | 97 | * suggests because we assume that is a link to |
e801700e ZJS |
98 | * /etc/systemd/ anyway. */ |
99 | ||
100 | e = getenv("XDG_DATA_HOME"); | |
101 | if (e) | |
205dd21e | 102 | j = strappend(e, suffix); |
e801700e | 103 | else { |
c4997074 | 104 | _cleanup_free_ char *home = NULL; |
205dd21e | 105 | |
c4997074 LP |
106 | r = get_home_dir(&home); |
107 | if (r < 0) | |
108 | return r; | |
205dd21e | 109 | |
605405c6 | 110 | j = strjoin(home, "/.local/share", suffix); |
e801700e | 111 | } |
205dd21e | 112 | if (!j) |
e801700e ZJS |
113 | return -ENOMEM; |
114 | ||
205dd21e | 115 | *ret = j; |
463d0d15 | 116 | return 1; |
e801700e ZJS |
117 | } |
118 | ||
d2561cfd ZJS |
119 | static const char* const user_data_unit_paths[] = { |
120 | "/usr/local/lib/systemd/user", | |
121 | "/usr/local/share/systemd/user", | |
122 | USER_DATA_UNIT_PATH, | |
123 | "/usr/lib/systemd/user", | |
124 | "/usr/share/systemd/user", | |
125 | NULL | |
126 | }; | |
127 | ||
128 | static const char* const user_config_unit_paths[] = { | |
129 | USER_CONFIG_UNIT_PATH, | |
130 | "/etc/systemd/user", | |
131 | NULL | |
132 | }; | |
133 | ||
ca4adeb7 | 134 | int xdg_user_dirs(char ***ret_config_dirs, char ***ret_data_dirs) { |
84e3543e LP |
135 | /* Implement the mechanisms defined in |
136 | * | |
137 | * http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html | |
138 | * | |
139 | * We look in both the config and the data dirs because we | |
140 | * want to encourage that distributors ship their unit files | |
141 | * as data, and allow overriding as configuration. | |
142 | */ | |
ca4adeb7 ZJS |
143 | const char *e; |
144 | _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL; | |
84e3543e | 145 | |
07719a21 LP |
146 | e = getenv("XDG_CONFIG_DIRS"); |
147 | if (e) { | |
148 | config_dirs = strv_split(e, ":"); | |
149 | if (!config_dirs) | |
ca4adeb7 | 150 | return -ENOMEM; |
07719a21 | 151 | } |
84e3543e | 152 | |
07719a21 LP |
153 | e = getenv("XDG_DATA_DIRS"); |
154 | if (e) | |
84e3543e LP |
155 | data_dirs = strv_split(e, ":"); |
156 | else | |
ef3102bf | 157 | data_dirs = strv_new("/usr/local/share", |
ef3102bf | 158 | "/usr/share", |
ef3102bf | 159 | NULL); |
84e3543e | 160 | if (!data_dirs) |
ca4adeb7 ZJS |
161 | return -ENOMEM; |
162 | ||
163 | *ret_config_dirs = config_dirs; | |
164 | *ret_data_dirs = data_dirs; | |
165 | config_dirs = data_dirs = NULL; | |
166 | return 0; | |
167 | } | |
168 | ||
169 | static char** user_dirs( | |
170 | const char *persistent_config, | |
171 | const char *runtime_config, | |
7b6344d3 ZJS |
172 | const char *global_persistent_config, |
173 | const char *global_runtime_config, | |
ca4adeb7 ZJS |
174 | const char *generator, |
175 | const char *generator_early, | |
176 | const char *generator_late, | |
177 | const char *transient, | |
178 | const char *persistent_control, | |
179 | const char *runtime_control) { | |
180 | ||
181 | _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL; | |
182 | _cleanup_free_ char *data_home = NULL; | |
183 | _cleanup_strv_free_ char **res = NULL; | |
ca4adeb7 ZJS |
184 | int r; |
185 | ||
186 | r = xdg_user_dirs(&config_dirs, &data_dirs); | |
187 | if (r < 0) | |
188 | return NULL; | |
189 | ||
190 | r = xdg_user_data_dir(&data_home, "/systemd/user"); | |
191 | if (r < 0 && r != -ENXIO) | |
e801700e | 192 | return NULL; |
84e3543e LP |
193 | |
194 | /* Now merge everything we found. */ | |
80b1ae32 LP |
195 | if (strv_extend(&res, persistent_control) < 0) |
196 | return NULL; | |
39591351 | 197 | |
80b1ae32 LP |
198 | if (strv_extend(&res, runtime_control) < 0) |
199 | return NULL; | |
200 | ||
201 | if (strv_extend(&res, transient) < 0) | |
202 | return NULL; | |
203 | ||
204 | if (strv_extend(&res, generator_early) < 0) | |
205 | return NULL; | |
07719a21 | 206 | |
b9418b05 LP |
207 | if (strv_extend_strv_concat(&res, config_dirs, "/systemd/user") < 0) |
208 | return NULL; | |
718880ba | 209 | |
a0f84a10 LP |
210 | if (strv_extend(&res, persistent_config) < 0) |
211 | return NULL; | |
212 | ||
7b6344d3 ZJS |
213 | /* global config has lower priority than the user config of the same type */ |
214 | if (strv_extend(&res, global_persistent_config) < 0) | |
215 | return NULL; | |
216 | ||
d2561cfd | 217 | if (strv_extend_strv(&res, (char**) user_config_unit_paths, false) < 0) |
e801700e | 218 | return NULL; |
718880ba | 219 | |
a0f84a10 | 220 | if (strv_extend(&res, runtime_config) < 0) |
e801700e | 221 | return NULL; |
84e3543e | 222 | |
7b6344d3 ZJS |
223 | if (strv_extend(&res, global_runtime_config) < 0) |
224 | return NULL; | |
225 | ||
80b1ae32 LP |
226 | if (strv_extend(&res, generator) < 0) |
227 | return NULL; | |
07719a21 | 228 | |
80b1ae32 LP |
229 | if (strv_extend(&res, data_home) < 0) |
230 | return NULL; | |
84e3543e | 231 | |
b9418b05 LP |
232 | if (strv_extend_strv_concat(&res, data_dirs, "/systemd/user") < 0) |
233 | return NULL; | |
84e3543e | 234 | |
d2561cfd | 235 | if (strv_extend_strv(&res, (char**) user_data_unit_paths, false) < 0) |
e801700e | 236 | return NULL; |
84e3543e | 237 | |
80b1ae32 LP |
238 | if (strv_extend(&res, generator_late) < 0) |
239 | return NULL; | |
07719a21 | 240 | |
0f474365 | 241 | if (path_strv_make_absolute_cwd(res) < 0) |
e801700e | 242 | return NULL; |
84e3543e | 243 | |
ae2a15bc | 244 | return TAKE_PTR(res); |
e801700e | 245 | } |
84e3543e | 246 | |
d2561cfd ZJS |
247 | bool path_is_user_data_dir(const char *path) { |
248 | assert(path); | |
249 | ||
250 | return strv_contains((char**) user_data_unit_paths, path); | |
251 | } | |
252 | ||
253 | bool path_is_user_config_dir(const char *path) { | |
254 | assert(path); | |
255 | ||
256 | return strv_contains((char**) user_config_unit_paths, path); | |
257 | } | |
258 | ||
a3c4eb07 | 259 | static int acquire_generator_dirs( |
463d0d15 | 260 | UnitFileScope scope, |
a1f31f47 | 261 | const char *tempdir, |
a3c4eb07 LP |
262 | char **generator, |
263 | char **generator_early, | |
264 | char **generator_late) { | |
265 | ||
266 | _cleanup_free_ char *x = NULL, *y = NULL, *z = NULL; | |
267 | const char *prefix; | |
268 | ||
269 | assert(generator); | |
270 | assert(generator_early); | |
271 | assert(generator_late); | |
a1f31f47 | 272 | assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER, UNIT_FILE_GLOBAL)); |
a3c4eb07 | 273 | |
a1f31f47 ZJS |
274 | if (scope == UNIT_FILE_GLOBAL) |
275 | return -EOPNOTSUPP; | |
463d0d15 | 276 | |
a1f31f47 ZJS |
277 | if (tempdir) |
278 | prefix = tempdir; | |
279 | ||
280 | else if (scope == UNIT_FILE_SYSTEM) | |
281 | prefix = "/run/systemd"; | |
a3c4eb07 | 282 | |
a1f31f47 | 283 | else if (scope == UNIT_FILE_USER) { |
463d0d15 | 284 | const char *e; |
a3c4eb07 LP |
285 | |
286 | e = getenv("XDG_RUNTIME_DIR"); | |
287 | if (!e) | |
463d0d15 | 288 | return -ENXIO; |
a3c4eb07 | 289 | |
a1f31f47 | 290 | prefix = strjoina(e, "/systemd"); |
a3c4eb07 LP |
291 | } |
292 | ||
a1f31f47 | 293 | x = strappend(prefix, "/generator"); |
a3c4eb07 LP |
294 | if (!x) |
295 | return -ENOMEM; | |
296 | ||
a1f31f47 | 297 | y = strappend(prefix, "/generator.early"); |
a3c4eb07 LP |
298 | if (!y) |
299 | return -ENOMEM; | |
300 | ||
a1f31f47 | 301 | z = strappend(prefix, "/generator.late"); |
a3c4eb07 LP |
302 | if (!z) |
303 | return -ENOMEM; | |
304 | ||
1cc6c93a YW |
305 | *generator = TAKE_PTR(x); |
306 | *generator_early = TAKE_PTR(y); | |
307 | *generator_late = TAKE_PTR(z); | |
a3c4eb07 | 308 | |
a3c4eb07 LP |
309 | return 0; |
310 | } | |
311 | ||
a1f31f47 ZJS |
312 | static int acquire_transient_dir( |
313 | UnitFileScope scope, | |
314 | const char *tempdir, | |
315 | char **ret) { | |
39591351 | 316 | |
a1f31f47 | 317 | char *transient; |
39591351 | 318 | |
a1f31f47 ZJS |
319 | assert(ret); |
320 | assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER, UNIT_FILE_GLOBAL)); | |
39591351 | 321 | |
a1f31f47 ZJS |
322 | if (scope == UNIT_FILE_GLOBAL) |
323 | return -EOPNOTSUPP; | |
39591351 | 324 | |
a1f31f47 ZJS |
325 | if (tempdir) |
326 | transient = strjoin(tempdir, "/transient"); | |
327 | else if (scope == UNIT_FILE_SYSTEM) | |
328 | transient = strdup("/run/systemd/transient"); | |
329 | else | |
ca4adeb7 | 330 | return xdg_user_runtime_dir(ret, "/systemd/transient"); |
a7527131 | 331 | |
a1f31f47 ZJS |
332 | if (!transient) |
333 | return -ENOMEM; | |
334 | *ret = transient; | |
335 | return 0; | |
39591351 LP |
336 | } |
337 | ||
463d0d15 | 338 | static int acquire_config_dirs(UnitFileScope scope, char **persistent, char **runtime) { |
a0f84a10 LP |
339 | _cleanup_free_ char *a = NULL, *b = NULL; |
340 | int r; | |
341 | ||
342 | assert(persistent); | |
343 | assert(runtime); | |
344 | ||
463d0d15 LP |
345 | switch (scope) { |
346 | ||
347 | case UNIT_FILE_SYSTEM: | |
a0f84a10 LP |
348 | a = strdup(SYSTEM_CONFIG_UNIT_PATH); |
349 | b = strdup("/run/systemd/system"); | |
463d0d15 LP |
350 | break; |
351 | ||
352 | case UNIT_FILE_GLOBAL: | |
353 | a = strdup(USER_CONFIG_UNIT_PATH); | |
354 | b = strdup("/run/systemd/user"); | |
355 | break; | |
a0f84a10 | 356 | |
463d0d15 | 357 | case UNIT_FILE_USER: |
ca4adeb7 | 358 | r = xdg_user_config_dir(&a, "/systemd/user"); |
c3c7eb7d | 359 | if (r < 0 && r != -ENXIO) |
a0f84a10 LP |
360 | return r; |
361 | ||
ca4adeb7 | 362 | r = xdg_user_runtime_dir(runtime, "/systemd/user"); |
c3c7eb7d LP |
363 | if (r < 0) { |
364 | if (r != -ENXIO) | |
365 | return r; | |
366 | ||
367 | /* If XDG_RUNTIME_DIR is not set, don't consider that fatal, simply initialize the runtime | |
368 | * directory to NULL */ | |
369 | *runtime = NULL; | |
370 | } | |
a0f84a10 | 371 | |
ae2a15bc | 372 | *persistent = TAKE_PTR(a); |
a0f84a10 LP |
373 | |
374 | return 0; | |
a0f84a10 | 375 | |
463d0d15 LP |
376 | default: |
377 | assert_not_reached("Hmm, unexpected scope value."); | |
a0f84a10 LP |
378 | } |
379 | ||
380 | if (!a || !b) | |
381 | return -ENOMEM; | |
382 | ||
1cc6c93a YW |
383 | *persistent = TAKE_PTR(a); |
384 | *runtime = TAKE_PTR(b); | |
a0f84a10 LP |
385 | |
386 | return 0; | |
387 | } | |
388 | ||
80b1ae32 LP |
389 | static int acquire_control_dirs(UnitFileScope scope, char **persistent, char **runtime) { |
390 | _cleanup_free_ char *a = NULL; | |
391 | int r; | |
392 | ||
393 | assert(persistent); | |
394 | assert(runtime); | |
395 | ||
396 | switch (scope) { | |
397 | ||
398 | case UNIT_FILE_SYSTEM: { | |
399 | _cleanup_free_ char *b = NULL; | |
400 | ||
401 | a = strdup("/etc/systemd/system.control"); | |
402 | if (!a) | |
403 | return -ENOMEM; | |
404 | ||
405 | b = strdup("/run/systemd/system.control"); | |
406 | if (!b) | |
407 | return -ENOMEM; | |
408 | ||
ae2a15bc | 409 | *runtime = TAKE_PTR(b); |
80b1ae32 LP |
410 | |
411 | break; | |
412 | } | |
413 | ||
414 | case UNIT_FILE_USER: | |
0d6671b2 | 415 | r = xdg_user_config_dir(&a, "/systemd/user.control"); |
c3c7eb7d | 416 | if (r < 0 && r != -ENXIO) |
80b1ae32 LP |
417 | return r; |
418 | ||
0d6671b2 | 419 | r = xdg_user_runtime_dir(runtime, "/systemd/user.control"); |
c3c7eb7d LP |
420 | if (r < 0) { |
421 | if (r != -ENXIO) | |
422 | return r; | |
423 | ||
424 | /* If XDG_RUNTIME_DIR is not set, don't consider this fatal, simply initialize the directory to | |
425 | * NULL */ | |
426 | *runtime = NULL; | |
427 | } | |
80b1ae32 LP |
428 | |
429 | break; | |
430 | ||
431 | case UNIT_FILE_GLOBAL: | |
432 | return -EOPNOTSUPP; | |
433 | ||
434 | default: | |
435 | assert_not_reached("Hmm, unexpected scope value."); | |
436 | } | |
437 | ||
ae2a15bc | 438 | *persistent = TAKE_PTR(a); |
80b1ae32 LP |
439 | |
440 | return 0; | |
441 | } | |
442 | ||
a3c4eb07 LP |
443 | static int patch_root_prefix(char **p, const char *root_dir) { |
444 | char *c; | |
445 | ||
446 | assert(p); | |
447 | ||
448 | if (!*p) | |
449 | return 0; | |
450 | ||
a3c4eb07 LP |
451 | c = prefix_root(root_dir, *p); |
452 | if (!c) | |
453 | return -ENOMEM; | |
454 | ||
455 | free(*p); | |
456 | *p = c; | |
457 | ||
458 | return 0; | |
459 | } | |
460 | ||
a1453343 LP |
461 | static int patch_root_prefix_strv(char **l, const char *root_dir) { |
462 | char **i; | |
463 | int r; | |
464 | ||
465 | if (!root_dir) | |
466 | return 0; | |
467 | ||
468 | STRV_FOREACH(i, l) { | |
469 | r = patch_root_prefix(i, root_dir); | |
470 | if (r < 0) | |
471 | return r; | |
472 | } | |
473 | ||
474 | return 0; | |
475 | } | |
476 | ||
07719a21 LP |
477 | int lookup_paths_init( |
478 | LookupPaths *p, | |
463d0d15 | 479 | UnitFileScope scope, |
4943d143 | 480 | LookupPathsFlags flags, |
a3c4eb07 | 481 | const char *root_dir) { |
07719a21 | 482 | |
a1f31f47 | 483 | _cleanup_(rmdir_and_freep) char *tempdir = NULL; |
e4bb56c7 LP |
484 | _cleanup_free_ char |
485 | *root = NULL, | |
39591351 | 486 | *persistent_config = NULL, *runtime_config = NULL, |
7b6344d3 | 487 | *global_persistent_config = NULL, *global_runtime_config = NULL, |
e4bb56c7 | 488 | *generator = NULL, *generator_early = NULL, *generator_late = NULL, |
80b1ae32 LP |
489 | *transient = NULL, |
490 | *persistent_control = NULL, *runtime_control = NULL; | |
cf7d80a5 | 491 | bool append = false; /* Add items from SYSTEMD_UNIT_PATH before normal directories */ |
e215d211 | 492 | _cleanup_strv_free_ char **paths = NULL; |
a3c4eb07 | 493 | const char *e; |
0f474365 | 494 | int r; |
84e3543e LP |
495 | |
496 | assert(p); | |
463d0d15 LP |
497 | assert(scope >= 0); |
498 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
a3c4eb07 | 499 | |
e4bb56c7 LP |
500 | if (!isempty(root_dir) && !path_equal(root_dir, "/")) { |
501 | if (scope == UNIT_FILE_USER) | |
502 | return -EINVAL; | |
503 | ||
504 | r = is_dir(root_dir, true); | |
505 | if (r < 0) | |
506 | return r; | |
507 | if (r == 0) | |
508 | return -ENOTDIR; | |
509 | ||
510 | root = strdup(root_dir); | |
511 | if (!root) | |
512 | return -ENOMEM; | |
513 | } | |
514 | ||
a1f31f47 ZJS |
515 | if (flags & LOOKUP_PATHS_TEMPORARY_GENERATED) { |
516 | r = mkdtemp_malloc("/tmp/systemd-temporary-XXXXXX", &tempdir); | |
517 | if (r < 0) | |
518 | return log_error_errno(r, "Failed to create temporary directory: %m"); | |
519 | } | |
520 | ||
c3c7eb7d | 521 | /* Note: when XDG_RUNTIME_DIR is not set this will not return -ENXIO, but simply set runtime_config to NULL */ |
463d0d15 | 522 | r = acquire_config_dirs(scope, &persistent_config, &runtime_config); |
c3c7eb7d | 523 | if (r < 0) |
a0f84a10 LP |
524 | return r; |
525 | ||
7b6344d3 ZJS |
526 | if (scope == UNIT_FILE_USER) { |
527 | r = acquire_config_dirs(UNIT_FILE_GLOBAL, &global_persistent_config, &global_runtime_config); | |
528 | if (r < 0) | |
529 | return r; | |
530 | } | |
531 | ||
4943d143 | 532 | if ((flags & LOOKUP_PATHS_EXCLUDE_GENERATED) == 0) { |
c3c7eb7d | 533 | /* Note: if XDG_RUNTIME_DIR is not set, this will fail completely with ENXIO */ |
a1f31f47 ZJS |
534 | r = acquire_generator_dirs(scope, tempdir, |
535 | &generator, &generator_early, &generator_late); | |
4c701096 | 536 | if (r < 0 && !IN_SET(r, -EOPNOTSUPP, -ENXIO)) |
4943d143 LP |
537 | return r; |
538 | } | |
84e3543e | 539 | |
c3c7eb7d | 540 | /* Note: if XDG_RUNTIME_DIR is not set, this will fail completely with ENXIO */ |
a1f31f47 | 541 | r = acquire_transient_dir(scope, tempdir, &transient); |
4c701096 | 542 | if (r < 0 && !IN_SET(r, -EOPNOTSUPP, -ENXIO)) |
39591351 LP |
543 | return r; |
544 | ||
c3c7eb7d | 545 | /* Note: when XDG_RUNTIME_DIR is not set this will not return -ENXIO, but simply set runtime_control to NULL */ |
80b1ae32 | 546 | r = acquire_control_dirs(scope, &persistent_control, &runtime_control); |
c3c7eb7d | 547 | if (r < 0 && r != -EOPNOTSUPP) |
80b1ae32 LP |
548 | return r; |
549 | ||
cd64fd56 | 550 | /* First priority is whatever has been passed to us via env vars */ |
07719a21 LP |
551 | e = getenv("SYSTEMD_UNIT_PATH"); |
552 | if (e) { | |
a3c4eb07 LP |
553 | const char *k; |
554 | ||
555 | k = endswith(e, ":"); | |
556 | if (k) { | |
557 | e = strndupa(e, k - e); | |
cf7d80a5 ZJS |
558 | append = true; |
559 | } | |
560 | ||
f63c4aab | 561 | /* FIXME: empty components in other places should be rejected. */ |
cf7d80a5 | 562 | |
e215d211 | 563 | r = path_split_and_make_absolute(e, &paths); |
0f474365 LP |
564 | if (r < 0) |
565 | return r; | |
e215d211 | 566 | } |
84e3543e | 567 | |
e215d211 | 568 | if (!paths || append) { |
cf7d80a5 ZJS |
569 | /* Let's figure something out. */ |
570 | ||
a3c4eb07 | 571 | _cleanup_strv_free_ char **add = NULL; |
84e3543e | 572 | |
07719a21 | 573 | /* For the user units we include share/ in the search |
cf7d80a5 ZJS |
574 | * path in order to comply with the XDG basedir spec. |
575 | * For the system stuff we avoid such nonsense. OTOH | |
576 | * we include /lib in the search path for the system | |
577 | * stuff but avoid it for user stuff. */ | |
07719a21 | 578 | |
463d0d15 LP |
579 | switch (scope) { |
580 | ||
581 | case UNIT_FILE_SYSTEM: | |
582 | add = strv_new( | |
583 | /* If you modify this you also want to modify | |
584 | * systemdsystemunitpath= in systemd.pc.in! */ | |
80b1ae32 LP |
585 | STRV_IFNOTNULL(persistent_control), |
586 | STRV_IFNOTNULL(runtime_control), | |
39591351 | 587 | STRV_IFNOTNULL(transient), |
463d0d15 LP |
588 | STRV_IFNOTNULL(generator_early), |
589 | persistent_config, | |
5f0a41da | 590 | SYSTEM_CONFIG_UNIT_PATH, |
463d0d15 LP |
591 | "/etc/systemd/system", |
592 | runtime_config, | |
593 | "/run/systemd/system", | |
594 | STRV_IFNOTNULL(generator), | |
595 | "/usr/local/lib/systemd/system", | |
596 | SYSTEM_DATA_UNIT_PATH, | |
597 | "/usr/lib/systemd/system", | |
349cc4a5 | 598 | #if HAVE_SPLIT_USR |
463d0d15 LP |
599 | "/lib/systemd/system", |
600 | #endif | |
601 | STRV_IFNOTNULL(generator_late), | |
602 | NULL); | |
603 | break; | |
604 | ||
605 | case UNIT_FILE_GLOBAL: | |
606 | add = strv_new( | |
07719a21 | 607 | /* If you modify this you also want to modify |
cf7d80a5 ZJS |
608 | * systemduserunitpath= in systemd.pc.in, and |
609 | * the arrays in user_dirs() above! */ | |
80b1ae32 LP |
610 | STRV_IFNOTNULL(persistent_control), |
611 | STRV_IFNOTNULL(runtime_control), | |
39591351 | 612 | STRV_IFNOTNULL(transient), |
463d0d15 | 613 | STRV_IFNOTNULL(generator_early), |
a0f84a10 | 614 | persistent_config, |
5f0a41da | 615 | USER_CONFIG_UNIT_PATH, |
cf7d80a5 | 616 | "/etc/systemd/user", |
a0f84a10 | 617 | runtime_config, |
cf7d80a5 | 618 | "/run/systemd/user", |
463d0d15 | 619 | STRV_IFNOTNULL(generator), |
cf7d80a5 | 620 | "/usr/local/share/systemd/user", |
7e684baf ZJS |
621 | "/usr/share/systemd/user", |
622 | "/usr/local/lib/systemd/user", | |
cf7d80a5 ZJS |
623 | USER_DATA_UNIT_PATH, |
624 | "/usr/lib/systemd/user", | |
463d0d15 | 625 | STRV_IFNOTNULL(generator_late), |
07719a21 | 626 | NULL); |
463d0d15 LP |
627 | break; |
628 | ||
629 | case UNIT_FILE_USER: | |
630 | add = user_dirs(persistent_config, runtime_config, | |
7b6344d3 | 631 | global_persistent_config, global_runtime_config, |
39591351 | 632 | generator, generator_early, generator_late, |
80b1ae32 | 633 | transient, |
c59479e7 | 634 | persistent_control, runtime_control); |
463d0d15 LP |
635 | break; |
636 | ||
637 | default: | |
638 | assert_not_reached("Hmm, unexpected scope?"); | |
639 | } | |
07719a21 | 640 | |
a3c4eb07 | 641 | if (!add) |
cf7d80a5 ZJS |
642 | return -ENOMEM; |
643 | ||
8f1e0ad4 LP |
644 | if (paths) { |
645 | r = strv_extend_strv(&paths, add, true); | |
646 | if (r < 0) | |
a3c4eb07 | 647 | return r; |
1cc6c93a | 648 | } else |
8f1e0ad4 LP |
649 | /* Small optimization: if paths is NULL (and it usually is), we can simply assign 'add' to it, |
650 | * and don't have to copy anything */ | |
1cc6c93a | 651 | paths = TAKE_PTR(add); |
84e3543e LP |
652 | } |
653 | ||
e4bb56c7 | 654 | r = patch_root_prefix(&persistent_config, root); |
a0f84a10 LP |
655 | if (r < 0) |
656 | return r; | |
e4bb56c7 | 657 | r = patch_root_prefix(&runtime_config, root); |
a0f84a10 LP |
658 | if (r < 0) |
659 | return r; | |
660 | ||
e4bb56c7 | 661 | r = patch_root_prefix(&generator, root); |
a3c4eb07 LP |
662 | if (r < 0) |
663 | return r; | |
e4bb56c7 | 664 | r = patch_root_prefix(&generator_early, root); |
a3c4eb07 LP |
665 | if (r < 0) |
666 | return r; | |
e4bb56c7 | 667 | r = patch_root_prefix(&generator_late, root); |
a3c4eb07 LP |
668 | if (r < 0) |
669 | return r; | |
670 | ||
39591351 LP |
671 | r = patch_root_prefix(&transient, root); |
672 | if (r < 0) | |
673 | return r; | |
674 | ||
80b1ae32 LP |
675 | r = patch_root_prefix(&persistent_control, root); |
676 | if (r < 0) | |
677 | return r; | |
678 | ||
679 | r = patch_root_prefix(&runtime_control, root); | |
680 | if (r < 0) | |
681 | return r; | |
682 | ||
e215d211 | 683 | r = patch_root_prefix_strv(paths, root); |
a1453343 | 684 | if (r < 0) |
07719a21 | 685 | return -ENOMEM; |
07459bb6 | 686 | |
e215d211 ZJS |
687 | p->search_path = strv_uniq(paths); |
688 | paths = NULL; | |
a3c4eb07 | 689 | |
1cc6c93a YW |
690 | p->persistent_config = TAKE_PTR(persistent_config); |
691 | p->runtime_config = TAKE_PTR(runtime_config); | |
84e3543e | 692 | |
1cc6c93a YW |
693 | p->generator = TAKE_PTR(generator); |
694 | p->generator_early = TAKE_PTR(generator_early); | |
695 | p->generator_late = TAKE_PTR(generator_late); | |
39591351 | 696 | |
1cc6c93a | 697 | p->transient = TAKE_PTR(transient); |
80b1ae32 | 698 | |
1cc6c93a YW |
699 | p->persistent_control = TAKE_PTR(persistent_control); |
700 | p->runtime_control = TAKE_PTR(runtime_control); | |
e4bb56c7 | 701 | |
1cc6c93a YW |
702 | p->root_dir = TAKE_PTR(root); |
703 | p->temporary_dir = TAKE_PTR(tempdir); | |
a1f31f47 | 704 | |
84e3543e LP |
705 | return 0; |
706 | } | |
707 | ||
708 | void lookup_paths_free(LookupPaths *p) { | |
a3c4eb07 LP |
709 | if (!p) |
710 | return; | |
84e3543e | 711 | |
a3c4eb07 | 712 | p->search_path = strv_free(p->search_path); |
a0f84a10 LP |
713 | |
714 | p->persistent_config = mfree(p->persistent_config); | |
715 | p->runtime_config = mfree(p->runtime_config); | |
716 | ||
a3c4eb07 LP |
717 | p->generator = mfree(p->generator); |
718 | p->generator_early = mfree(p->generator_early); | |
719 | p->generator_late = mfree(p->generator_late); | |
e4bb56c7 | 720 | |
39591351 LP |
721 | p->transient = mfree(p->transient); |
722 | ||
80b1ae32 LP |
723 | p->persistent_control = mfree(p->persistent_control); |
724 | p->runtime_control = mfree(p->runtime_control); | |
725 | ||
e4bb56c7 | 726 | p->root_dir = mfree(p->root_dir); |
23115a60 | 727 | p->temporary_dir = mfree(p->temporary_dir); |
84e3543e | 728 | } |
cd64fd56 | 729 | |
a1453343 LP |
730 | int lookup_paths_reduce(LookupPaths *p) { |
731 | _cleanup_free_ struct stat *stats = NULL; | |
732 | size_t n_stats = 0, allocated = 0; | |
733 | unsigned c = 0; | |
734 | int r; | |
735 | ||
736 | assert(p); | |
737 | ||
738 | /* Drop duplicates and non-existing directories from the search path. We figure out whether two directories are | |
739 | * the same by comparing their device and inode numbers. Note one special tweak: when we have a root path set, | |
740 | * we do not follow symlinks when retrieving them, because the kernel wouldn't take the root prefix into | |
741 | * account when following symlinks. When we have no root path set this restriction does not apply however. */ | |
742 | ||
743 | if (!p->search_path) | |
744 | return 0; | |
745 | ||
746 | while (p->search_path[c]) { | |
747 | struct stat st; | |
748 | unsigned k; | |
749 | ||
45639f1b LP |
750 | /* Never strip the transient and control directories from the path */ |
751 | if (path_equal_ptr(p->search_path[c], p->transient) || | |
752 | path_equal_ptr(p->search_path[c], p->persistent_control) || | |
753 | path_equal_ptr(p->search_path[c], p->runtime_control)) { | |
754 | c++; | |
755 | continue; | |
756 | } | |
757 | ||
a1453343 LP |
758 | if (p->root_dir) |
759 | r = lstat(p->search_path[c], &st); | |
760 | else | |
761 | r = stat(p->search_path[c], &st); | |
762 | if (r < 0) { | |
763 | if (errno == ENOENT) | |
764 | goto remove_item; | |
765 | ||
766 | /* If something we don't grok happened, let's better leave it in. */ | |
767 | log_debug_errno(errno, "Failed to stat %s: %m", p->search_path[c]); | |
768 | c++; | |
769 | continue; | |
770 | } | |
771 | ||
772 | for (k = 0; k < n_stats; k++) { | |
773 | if (stats[k].st_dev == st.st_dev && | |
774 | stats[k].st_ino == st.st_ino) | |
775 | break; | |
776 | } | |
777 | ||
778 | if (k < n_stats) /* Is there already an entry with the same device/inode? */ | |
779 | goto remove_item; | |
780 | ||
781 | if (!GREEDY_REALLOC(stats, allocated, n_stats+1)) | |
782 | return -ENOMEM; | |
783 | ||
784 | stats[n_stats++] = st; | |
785 | c++; | |
786 | continue; | |
787 | ||
788 | remove_item: | |
789 | free(p->search_path[c]); | |
790 | memmove(p->search_path + c, | |
791 | p->search_path + c + 1, | |
792 | (strv_length(p->search_path + c + 1) + 1) * sizeof(char*)); | |
793 | } | |
794 | ||
795 | if (strv_isempty(p->search_path)) { | |
796 | log_debug("Ignoring unit files."); | |
797 | p->search_path = strv_free(p->search_path); | |
798 | } else { | |
799 | _cleanup_free_ char *t; | |
800 | ||
801 | t = strv_join(p->search_path, "\n\t"); | |
802 | if (!t) | |
803 | return -ENOMEM; | |
804 | ||
805 | log_debug("Looking for unit files in (higher priority first):\n\t%s", t); | |
806 | } | |
807 | ||
808 | return 0; | |
809 | } | |
810 | ||
cd64fd56 LP |
811 | int lookup_paths_mkdir_generator(LookupPaths *p) { |
812 | int r, q; | |
813 | ||
814 | assert(p); | |
815 | ||
4943d143 LP |
816 | if (!p->generator || !p->generator_early || !p->generator_late) |
817 | return -EINVAL; | |
818 | ||
cd64fd56 LP |
819 | r = mkdir_p_label(p->generator, 0755); |
820 | ||
821 | q = mkdir_p_label(p->generator_early, 0755); | |
822 | if (q < 0 && r >= 0) | |
823 | r = q; | |
824 | ||
825 | q = mkdir_p_label(p->generator_late, 0755); | |
826 | if (q < 0 && r >= 0) | |
827 | r = q; | |
828 | ||
829 | return r; | |
830 | } | |
831 | ||
832 | void lookup_paths_trim_generator(LookupPaths *p) { | |
833 | assert(p); | |
834 | ||
835 | /* Trim empty dirs */ | |
836 | ||
837 | if (p->generator) | |
838 | (void) rmdir(p->generator); | |
cd64fd56 LP |
839 | if (p->generator_early) |
840 | (void) rmdir(p->generator_early); | |
cd64fd56 LP |
841 | if (p->generator_late) |
842 | (void) rmdir(p->generator_late); | |
843 | } | |
07a78643 LP |
844 | |
845 | void lookup_paths_flush_generator(LookupPaths *p) { | |
846 | assert(p); | |
847 | ||
80b1ae32 LP |
848 | /* Flush the generated unit files in full */ |
849 | ||
07a78643 LP |
850 | if (p->generator) |
851 | (void) rm_rf(p->generator, REMOVE_ROOT); | |
852 | if (p->generator_early) | |
853 | (void) rm_rf(p->generator_early, REMOVE_ROOT); | |
854 | if (p->generator_late) | |
855 | (void) rm_rf(p->generator_late, REMOVE_ROOT); | |
a1f31f47 ZJS |
856 | |
857 | if (p->temporary_dir) | |
858 | (void) rm_rf(p->temporary_dir, REMOVE_ROOT); | |
07a78643 | 859 | } |
a69b4fb0 LP |
860 | |
861 | char **generator_binary_paths(UnitFileScope scope) { | |
862 | ||
863 | switch (scope) { | |
864 | ||
865 | case UNIT_FILE_SYSTEM: | |
866 | return strv_new("/run/systemd/system-generators", | |
867 | "/etc/systemd/system-generators", | |
868 | "/usr/local/lib/systemd/system-generators", | |
869 | SYSTEM_GENERATOR_PATH, | |
870 | NULL); | |
871 | ||
872 | case UNIT_FILE_GLOBAL: | |
873 | case UNIT_FILE_USER: | |
874 | return strv_new("/run/systemd/user-generators", | |
875 | "/etc/systemd/user-generators", | |
876 | "/usr/local/lib/systemd/user-generators", | |
877 | USER_GENERATOR_PATH, | |
878 | NULL); | |
879 | ||
880 | default: | |
881 | assert_not_reached("Hmm, unexpected scope."); | |
882 | } | |
883 | } |