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Commit | Line | Data |
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84e3543e LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
84e3543e LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
84e3543e | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
84e3543e LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
cf0fbc49 | 20 | #include <errno.h> |
84e3543e | 21 | #include <stdio.h> |
cf0fbc49 | 22 | #include <stdlib.h> |
67445f4e | 23 | #include <string.h> |
84e3543e | 24 | |
b5efdb8a | 25 | #include "alloc-util.h" |
a1f31f47 ZJS |
26 | #include "fileio.h" |
27 | #include "fs-util.h" | |
a8ffe6fb | 28 | #include "install.h" |
a8fbdf54 TA |
29 | #include "log.h" |
30 | #include "macro.h" | |
cd64fd56 | 31 | #include "mkdir.h" |
07630cea | 32 | #include "path-lookup.h" |
cf0fbc49 | 33 | #include "path-util.h" |
80b1ae32 | 34 | #include "rm-rf.h" |
e4bb56c7 | 35 | #include "stat-util.h" |
cf0fbc49 TA |
36 | #include "string-util.h" |
37 | #include "strv.h" | |
c4997074 | 38 | #include "user-util.h" |
cf0fbc49 | 39 | #include "util.h" |
84e3543e | 40 | |
80b1ae32 | 41 | static int user_runtime_dir(char **ret, const char *suffix) { |
10e87ee7 | 42 | const char *e; |
205dd21e LP |
43 | char *j; |
44 | ||
45 | assert(ret); | |
80b1ae32 | 46 | assert(suffix); |
10e87ee7 | 47 | |
80b1ae32 LP |
48 | e = getenv("XDG_RUNTIME_DIR"); |
49 | if (!e) | |
50 | return -ENXIO; | |
205dd21e | 51 | |
80b1ae32 LP |
52 | j = strappend(e, suffix); |
53 | if (!j) | |
54 | return -ENOMEM; | |
10e87ee7 | 55 | |
205dd21e | 56 | *ret = j; |
10e87ee7 LP |
57 | return 0; |
58 | } | |
59 | ||
80b1ae32 | 60 | static int user_config_dir(char **ret, const char *suffix) { |
718880ba | 61 | const char *e; |
205dd21e | 62 | char *j; |
c4997074 | 63 | int r; |
205dd21e LP |
64 | |
65 | assert(ret); | |
718880ba | 66 | |
80b1ae32 LP |
67 | e = getenv("XDG_CONFIG_HOME"); |
68 | if (e) | |
69 | j = strappend(e, suffix); | |
70 | else { | |
c4997074 | 71 | _cleanup_free_ char *home = NULL; |
80b1ae32 | 72 | |
c4997074 LP |
73 | r = get_home_dir(&home); |
74 | if (r < 0) | |
75 | return r; | |
80b1ae32 | 76 | |
605405c6 | 77 | j = strjoin(home, "/.config", suffix); |
80b1ae32 | 78 | } |
718880ba | 79 | |
205dd21e LP |
80 | if (!j) |
81 | return -ENOMEM; | |
718880ba | 82 | |
205dd21e | 83 | *ret = j; |
718880ba SA |
84 | return 0; |
85 | } | |
86 | ||
80b1ae32 | 87 | static int user_data_dir(char **ret, const char *suffix) { |
e801700e | 88 | const char *e; |
205dd21e | 89 | char *j; |
c4997074 | 90 | int r; |
205dd21e LP |
91 | |
92 | assert(ret); | |
a7527131 | 93 | assert(suffix); |
e801700e ZJS |
94 | |
95 | /* We don't treat /etc/xdg/systemd here as the spec | |
61233823 | 96 | * suggests because we assume that is a link to |
e801700e ZJS |
97 | * /etc/systemd/ anyway. */ |
98 | ||
99 | e = getenv("XDG_DATA_HOME"); | |
100 | if (e) | |
205dd21e | 101 | j = strappend(e, suffix); |
e801700e | 102 | else { |
c4997074 | 103 | _cleanup_free_ char *home = NULL; |
205dd21e | 104 | |
c4997074 LP |
105 | r = get_home_dir(&home); |
106 | if (r < 0) | |
107 | return r; | |
205dd21e | 108 | |
605405c6 | 109 | j = strjoin(home, "/.local/share", suffix); |
e801700e | 110 | } |
205dd21e | 111 | if (!j) |
e801700e ZJS |
112 | return -ENOMEM; |
113 | ||
205dd21e | 114 | *ret = j; |
463d0d15 | 115 | return 1; |
e801700e ZJS |
116 | } |
117 | ||
d2561cfd ZJS |
118 | static const char* const user_data_unit_paths[] = { |
119 | "/usr/local/lib/systemd/user", | |
120 | "/usr/local/share/systemd/user", | |
121 | USER_DATA_UNIT_PATH, | |
122 | "/usr/lib/systemd/user", | |
123 | "/usr/share/systemd/user", | |
124 | NULL | |
125 | }; | |
126 | ||
127 | static const char* const user_config_unit_paths[] = { | |
128 | USER_CONFIG_UNIT_PATH, | |
129 | "/etc/systemd/user", | |
130 | NULL | |
131 | }; | |
132 | ||
07719a21 | 133 | static char** user_dirs( |
a0f84a10 LP |
134 | const char *persistent_config, |
135 | const char *runtime_config, | |
07719a21 LP |
136 | const char *generator, |
137 | const char *generator_early, | |
39591351 | 138 | const char *generator_late, |
80b1ae32 LP |
139 | const char *transient, |
140 | const char *persistent_control, | |
141 | const char *runtime_control) { | |
07719a21 | 142 | |
e3e45d4f | 143 | _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL; |
205dd21e | 144 | _cleanup_free_ char *data_home = NULL; |
fcd574d4 | 145 | _cleanup_strv_free_ char **res = NULL; |
b9418b05 | 146 | const char *e; |
e801700e ZJS |
147 | char **tmp; |
148 | int r; | |
84e3543e LP |
149 | |
150 | /* Implement the mechanisms defined in | |
151 | * | |
152 | * http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html | |
153 | * | |
154 | * We look in both the config and the data dirs because we | |
155 | * want to encourage that distributors ship their unit files | |
156 | * as data, and allow overriding as configuration. | |
157 | */ | |
158 | ||
07719a21 LP |
159 | e = getenv("XDG_CONFIG_DIRS"); |
160 | if (e) { | |
161 | config_dirs = strv_split(e, ":"); | |
162 | if (!config_dirs) | |
e801700e | 163 | return NULL; |
07719a21 | 164 | } |
84e3543e | 165 | |
80b1ae32 | 166 | r = user_data_dir(&data_home, "/systemd/user"); |
205dd21e | 167 | if (r < 0 && r != -ENXIO) |
e801700e | 168 | return NULL; |
84e3543e | 169 | |
07719a21 LP |
170 | e = getenv("XDG_DATA_DIRS"); |
171 | if (e) | |
84e3543e LP |
172 | data_dirs = strv_split(e, ":"); |
173 | else | |
ef3102bf | 174 | data_dirs = strv_new("/usr/local/share", |
ef3102bf | 175 | "/usr/share", |
ef3102bf | 176 | NULL); |
84e3543e | 177 | if (!data_dirs) |
e801700e | 178 | return NULL; |
84e3543e LP |
179 | |
180 | /* Now merge everything we found. */ | |
80b1ae32 LP |
181 | if (strv_extend(&res, persistent_control) < 0) |
182 | return NULL; | |
39591351 | 183 | |
80b1ae32 LP |
184 | if (strv_extend(&res, runtime_control) < 0) |
185 | return NULL; | |
186 | ||
187 | if (strv_extend(&res, transient) < 0) | |
188 | return NULL; | |
189 | ||
190 | if (strv_extend(&res, generator_early) < 0) | |
191 | return NULL; | |
07719a21 | 192 | |
b9418b05 LP |
193 | if (strv_extend_strv_concat(&res, config_dirs, "/systemd/user") < 0) |
194 | return NULL; | |
718880ba | 195 | |
a0f84a10 LP |
196 | if (strv_extend(&res, persistent_config) < 0) |
197 | return NULL; | |
198 | ||
d2561cfd | 199 | if (strv_extend_strv(&res, (char**) user_config_unit_paths, false) < 0) |
e801700e | 200 | return NULL; |
718880ba | 201 | |
a0f84a10 | 202 | if (strv_extend(&res, runtime_config) < 0) |
e801700e | 203 | return NULL; |
84e3543e | 204 | |
80b1ae32 LP |
205 | if (strv_extend(&res, generator) < 0) |
206 | return NULL; | |
07719a21 | 207 | |
80b1ae32 LP |
208 | if (strv_extend(&res, data_home) < 0) |
209 | return NULL; | |
84e3543e | 210 | |
b9418b05 LP |
211 | if (strv_extend_strv_concat(&res, data_dirs, "/systemd/user") < 0) |
212 | return NULL; | |
84e3543e | 213 | |
d2561cfd | 214 | if (strv_extend_strv(&res, (char**) user_data_unit_paths, false) < 0) |
e801700e | 215 | return NULL; |
84e3543e | 216 | |
80b1ae32 LP |
217 | if (strv_extend(&res, generator_late) < 0) |
218 | return NULL; | |
07719a21 | 219 | |
0f474365 | 220 | if (path_strv_make_absolute_cwd(res) < 0) |
e801700e | 221 | return NULL; |
84e3543e | 222 | |
e801700e ZJS |
223 | tmp = res; |
224 | res = NULL; | |
b9418b05 | 225 | |
e801700e ZJS |
226 | return tmp; |
227 | } | |
84e3543e | 228 | |
d2561cfd ZJS |
229 | bool path_is_user_data_dir(const char *path) { |
230 | assert(path); | |
231 | ||
232 | return strv_contains((char**) user_data_unit_paths, path); | |
233 | } | |
234 | ||
235 | bool path_is_user_config_dir(const char *path) { | |
236 | assert(path); | |
237 | ||
238 | return strv_contains((char**) user_config_unit_paths, path); | |
239 | } | |
240 | ||
a3c4eb07 | 241 | static int acquire_generator_dirs( |
463d0d15 | 242 | UnitFileScope scope, |
a1f31f47 | 243 | const char *tempdir, |
a3c4eb07 LP |
244 | char **generator, |
245 | char **generator_early, | |
246 | char **generator_late) { | |
247 | ||
a1f31f47 | 248 | _cleanup_(rmdir_and_freep) char *t = NULL; |
a3c4eb07 LP |
249 | _cleanup_free_ char *x = NULL, *y = NULL, *z = NULL; |
250 | const char *prefix; | |
251 | ||
252 | assert(generator); | |
253 | assert(generator_early); | |
254 | assert(generator_late); | |
a1f31f47 | 255 | assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER, UNIT_FILE_GLOBAL)); |
a3c4eb07 | 256 | |
a1f31f47 ZJS |
257 | if (scope == UNIT_FILE_GLOBAL) |
258 | return -EOPNOTSUPP; | |
463d0d15 | 259 | |
a1f31f47 ZJS |
260 | if (tempdir) |
261 | prefix = tempdir; | |
262 | ||
263 | else if (scope == UNIT_FILE_SYSTEM) | |
264 | prefix = "/run/systemd"; | |
a3c4eb07 | 265 | |
a1f31f47 | 266 | else if (scope == UNIT_FILE_USER) { |
463d0d15 | 267 | const char *e; |
a3c4eb07 LP |
268 | |
269 | e = getenv("XDG_RUNTIME_DIR"); | |
270 | if (!e) | |
463d0d15 | 271 | return -ENXIO; |
a3c4eb07 | 272 | |
a1f31f47 | 273 | prefix = strjoina(e, "/systemd"); |
a3c4eb07 LP |
274 | } |
275 | ||
a1f31f47 | 276 | x = strappend(prefix, "/generator"); |
a3c4eb07 LP |
277 | if (!x) |
278 | return -ENOMEM; | |
279 | ||
a1f31f47 | 280 | y = strappend(prefix, "/generator.early"); |
a3c4eb07 LP |
281 | if (!y) |
282 | return -ENOMEM; | |
283 | ||
a1f31f47 | 284 | z = strappend(prefix, "/generator.late"); |
a3c4eb07 LP |
285 | if (!z) |
286 | return -ENOMEM; | |
287 | ||
288 | *generator = x; | |
289 | *generator_early = y; | |
290 | *generator_late = z; | |
291 | ||
292 | x = y = z = NULL; | |
293 | return 0; | |
294 | } | |
295 | ||
a1f31f47 ZJS |
296 | static int acquire_transient_dir( |
297 | UnitFileScope scope, | |
298 | const char *tempdir, | |
299 | char **ret) { | |
39591351 | 300 | |
a1f31f47 | 301 | char *transient; |
39591351 | 302 | |
a1f31f47 ZJS |
303 | assert(ret); |
304 | assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER, UNIT_FILE_GLOBAL)); | |
39591351 | 305 | |
a1f31f47 ZJS |
306 | if (scope == UNIT_FILE_GLOBAL) |
307 | return -EOPNOTSUPP; | |
39591351 | 308 | |
a1f31f47 ZJS |
309 | if (tempdir) |
310 | transient = strjoin(tempdir, "/transient"); | |
311 | else if (scope == UNIT_FILE_SYSTEM) | |
312 | transient = strdup("/run/systemd/transient"); | |
313 | else | |
a7527131 LP |
314 | return user_runtime_dir(ret, "/systemd/transient"); |
315 | ||
a1f31f47 ZJS |
316 | if (!transient) |
317 | return -ENOMEM; | |
318 | *ret = transient; | |
319 | return 0; | |
39591351 LP |
320 | } |
321 | ||
463d0d15 | 322 | static int acquire_config_dirs(UnitFileScope scope, char **persistent, char **runtime) { |
a0f84a10 LP |
323 | _cleanup_free_ char *a = NULL, *b = NULL; |
324 | int r; | |
325 | ||
326 | assert(persistent); | |
327 | assert(runtime); | |
328 | ||
463d0d15 LP |
329 | switch (scope) { |
330 | ||
331 | case UNIT_FILE_SYSTEM: | |
a0f84a10 LP |
332 | a = strdup(SYSTEM_CONFIG_UNIT_PATH); |
333 | b = strdup("/run/systemd/system"); | |
463d0d15 LP |
334 | break; |
335 | ||
336 | case UNIT_FILE_GLOBAL: | |
337 | a = strdup(USER_CONFIG_UNIT_PATH); | |
338 | b = strdup("/run/systemd/user"); | |
339 | break; | |
a0f84a10 | 340 | |
463d0d15 | 341 | case UNIT_FILE_USER: |
80b1ae32 | 342 | r = user_config_dir(&a, "/systemd/user"); |
c3c7eb7d | 343 | if (r < 0 && r != -ENXIO) |
a0f84a10 LP |
344 | return r; |
345 | ||
a7527131 | 346 | r = user_runtime_dir(runtime, "/systemd/user"); |
c3c7eb7d LP |
347 | if (r < 0) { |
348 | if (r != -ENXIO) | |
349 | return r; | |
350 | ||
351 | /* If XDG_RUNTIME_DIR is not set, don't consider that fatal, simply initialize the runtime | |
352 | * directory to NULL */ | |
353 | *runtime = NULL; | |
354 | } | |
a0f84a10 LP |
355 | |
356 | *persistent = a; | |
357 | a = NULL; | |
358 | ||
359 | return 0; | |
a0f84a10 | 360 | |
463d0d15 LP |
361 | default: |
362 | assert_not_reached("Hmm, unexpected scope value."); | |
a0f84a10 LP |
363 | } |
364 | ||
365 | if (!a || !b) | |
366 | return -ENOMEM; | |
367 | ||
368 | *persistent = a; | |
369 | *runtime = b; | |
370 | a = b = NULL; | |
371 | ||
372 | return 0; | |
373 | } | |
374 | ||
80b1ae32 LP |
375 | static int acquire_control_dirs(UnitFileScope scope, char **persistent, char **runtime) { |
376 | _cleanup_free_ char *a = NULL; | |
377 | int r; | |
378 | ||
379 | assert(persistent); | |
380 | assert(runtime); | |
381 | ||
382 | switch (scope) { | |
383 | ||
384 | case UNIT_FILE_SYSTEM: { | |
385 | _cleanup_free_ char *b = NULL; | |
386 | ||
387 | a = strdup("/etc/systemd/system.control"); | |
388 | if (!a) | |
389 | return -ENOMEM; | |
390 | ||
391 | b = strdup("/run/systemd/system.control"); | |
392 | if (!b) | |
393 | return -ENOMEM; | |
394 | ||
395 | *runtime = b; | |
396 | b = NULL; | |
397 | ||
398 | break; | |
399 | } | |
400 | ||
401 | case UNIT_FILE_USER: | |
402 | r = user_config_dir(&a, "/systemd/system.control"); | |
c3c7eb7d | 403 | if (r < 0 && r != -ENXIO) |
80b1ae32 LP |
404 | return r; |
405 | ||
406 | r = user_runtime_dir(runtime, "/systemd/system.control"); | |
c3c7eb7d LP |
407 | if (r < 0) { |
408 | if (r != -ENXIO) | |
409 | return r; | |
410 | ||
411 | /* If XDG_RUNTIME_DIR is not set, don't consider this fatal, simply initialize the directory to | |
412 | * NULL */ | |
413 | *runtime = NULL; | |
414 | } | |
80b1ae32 LP |
415 | |
416 | break; | |
417 | ||
418 | case UNIT_FILE_GLOBAL: | |
419 | return -EOPNOTSUPP; | |
420 | ||
421 | default: | |
422 | assert_not_reached("Hmm, unexpected scope value."); | |
423 | } | |
424 | ||
425 | *persistent = a; | |
426 | a = NULL; | |
427 | ||
428 | return 0; | |
429 | } | |
430 | ||
a3c4eb07 LP |
431 | static int patch_root_prefix(char **p, const char *root_dir) { |
432 | char *c; | |
433 | ||
434 | assert(p); | |
435 | ||
436 | if (!*p) | |
437 | return 0; | |
438 | ||
a3c4eb07 LP |
439 | c = prefix_root(root_dir, *p); |
440 | if (!c) | |
441 | return -ENOMEM; | |
442 | ||
443 | free(*p); | |
444 | *p = c; | |
445 | ||
446 | return 0; | |
447 | } | |
448 | ||
a1453343 LP |
449 | static int patch_root_prefix_strv(char **l, const char *root_dir) { |
450 | char **i; | |
451 | int r; | |
452 | ||
453 | if (!root_dir) | |
454 | return 0; | |
455 | ||
456 | STRV_FOREACH(i, l) { | |
457 | r = patch_root_prefix(i, root_dir); | |
458 | if (r < 0) | |
459 | return r; | |
460 | } | |
461 | ||
462 | return 0; | |
463 | } | |
464 | ||
07719a21 LP |
465 | int lookup_paths_init( |
466 | LookupPaths *p, | |
463d0d15 | 467 | UnitFileScope scope, |
4943d143 | 468 | LookupPathsFlags flags, |
a3c4eb07 | 469 | const char *root_dir) { |
07719a21 | 470 | |
a1f31f47 | 471 | _cleanup_(rmdir_and_freep) char *tempdir = NULL; |
e4bb56c7 LP |
472 | _cleanup_free_ char |
473 | *root = NULL, | |
39591351 | 474 | *persistent_config = NULL, *runtime_config = NULL, |
e4bb56c7 | 475 | *generator = NULL, *generator_early = NULL, *generator_late = NULL, |
80b1ae32 LP |
476 | *transient = NULL, |
477 | *persistent_control = NULL, *runtime_control = NULL; | |
cf7d80a5 | 478 | bool append = false; /* Add items from SYSTEMD_UNIT_PATH before normal directories */ |
e215d211 | 479 | _cleanup_strv_free_ char **paths = NULL; |
a3c4eb07 | 480 | const char *e; |
0f474365 | 481 | int r; |
84e3543e LP |
482 | |
483 | assert(p); | |
463d0d15 LP |
484 | assert(scope >= 0); |
485 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
a3c4eb07 | 486 | |
e4bb56c7 LP |
487 | if (!isempty(root_dir) && !path_equal(root_dir, "/")) { |
488 | if (scope == UNIT_FILE_USER) | |
489 | return -EINVAL; | |
490 | ||
491 | r = is_dir(root_dir, true); | |
492 | if (r < 0) | |
493 | return r; | |
494 | if (r == 0) | |
495 | return -ENOTDIR; | |
496 | ||
497 | root = strdup(root_dir); | |
498 | if (!root) | |
499 | return -ENOMEM; | |
500 | } | |
501 | ||
a1f31f47 ZJS |
502 | if (flags & LOOKUP_PATHS_TEMPORARY_GENERATED) { |
503 | r = mkdtemp_malloc("/tmp/systemd-temporary-XXXXXX", &tempdir); | |
504 | if (r < 0) | |
505 | return log_error_errno(r, "Failed to create temporary directory: %m"); | |
506 | } | |
507 | ||
c3c7eb7d | 508 | /* Note: when XDG_RUNTIME_DIR is not set this will not return -ENXIO, but simply set runtime_config to NULL */ |
463d0d15 | 509 | r = acquire_config_dirs(scope, &persistent_config, &runtime_config); |
c3c7eb7d | 510 | if (r < 0) |
a0f84a10 LP |
511 | return r; |
512 | ||
4943d143 | 513 | if ((flags & LOOKUP_PATHS_EXCLUDE_GENERATED) == 0) { |
c3c7eb7d | 514 | /* Note: if XDG_RUNTIME_DIR is not set, this will fail completely with ENXIO */ |
a1f31f47 ZJS |
515 | r = acquire_generator_dirs(scope, tempdir, |
516 | &generator, &generator_early, &generator_late); | |
4943d143 LP |
517 | if (r < 0 && r != -EOPNOTSUPP && r != -ENXIO) |
518 | return r; | |
519 | } | |
84e3543e | 520 | |
c3c7eb7d | 521 | /* Note: if XDG_RUNTIME_DIR is not set, this will fail completely with ENXIO */ |
a1f31f47 | 522 | r = acquire_transient_dir(scope, tempdir, &transient); |
39591351 LP |
523 | if (r < 0 && r != -EOPNOTSUPP && r != -ENXIO) |
524 | return r; | |
525 | ||
c3c7eb7d | 526 | /* Note: when XDG_RUNTIME_DIR is not set this will not return -ENXIO, but simply set runtime_control to NULL */ |
80b1ae32 | 527 | r = acquire_control_dirs(scope, &persistent_control, &runtime_control); |
c3c7eb7d | 528 | if (r < 0 && r != -EOPNOTSUPP) |
80b1ae32 LP |
529 | return r; |
530 | ||
cd64fd56 | 531 | /* First priority is whatever has been passed to us via env vars */ |
07719a21 LP |
532 | e = getenv("SYSTEMD_UNIT_PATH"); |
533 | if (e) { | |
a3c4eb07 LP |
534 | const char *k; |
535 | ||
536 | k = endswith(e, ":"); | |
537 | if (k) { | |
538 | e = strndupa(e, k - e); | |
cf7d80a5 ZJS |
539 | append = true; |
540 | } | |
541 | ||
f63c4aab | 542 | /* FIXME: empty components in other places should be rejected. */ |
cf7d80a5 | 543 | |
e215d211 | 544 | r = path_split_and_make_absolute(e, &paths); |
0f474365 LP |
545 | if (r < 0) |
546 | return r; | |
e215d211 | 547 | } |
84e3543e | 548 | |
e215d211 | 549 | if (!paths || append) { |
cf7d80a5 ZJS |
550 | /* Let's figure something out. */ |
551 | ||
a3c4eb07 | 552 | _cleanup_strv_free_ char **add = NULL; |
84e3543e | 553 | |
07719a21 | 554 | /* For the user units we include share/ in the search |
cf7d80a5 ZJS |
555 | * path in order to comply with the XDG basedir spec. |
556 | * For the system stuff we avoid such nonsense. OTOH | |
557 | * we include /lib in the search path for the system | |
558 | * stuff but avoid it for user stuff. */ | |
07719a21 | 559 | |
463d0d15 LP |
560 | switch (scope) { |
561 | ||
562 | case UNIT_FILE_SYSTEM: | |
563 | add = strv_new( | |
564 | /* If you modify this you also want to modify | |
565 | * systemdsystemunitpath= in systemd.pc.in! */ | |
80b1ae32 LP |
566 | STRV_IFNOTNULL(persistent_control), |
567 | STRV_IFNOTNULL(runtime_control), | |
39591351 | 568 | STRV_IFNOTNULL(transient), |
463d0d15 LP |
569 | STRV_IFNOTNULL(generator_early), |
570 | persistent_config, | |
5f0a41da | 571 | SYSTEM_CONFIG_UNIT_PATH, |
463d0d15 LP |
572 | "/etc/systemd/system", |
573 | runtime_config, | |
574 | "/run/systemd/system", | |
575 | STRV_IFNOTNULL(generator), | |
576 | "/usr/local/lib/systemd/system", | |
577 | SYSTEM_DATA_UNIT_PATH, | |
578 | "/usr/lib/systemd/system", | |
349cc4a5 | 579 | #if HAVE_SPLIT_USR |
463d0d15 LP |
580 | "/lib/systemd/system", |
581 | #endif | |
582 | STRV_IFNOTNULL(generator_late), | |
583 | NULL); | |
584 | break; | |
585 | ||
586 | case UNIT_FILE_GLOBAL: | |
587 | add = strv_new( | |
07719a21 | 588 | /* If you modify this you also want to modify |
cf7d80a5 ZJS |
589 | * systemduserunitpath= in systemd.pc.in, and |
590 | * the arrays in user_dirs() above! */ | |
80b1ae32 LP |
591 | STRV_IFNOTNULL(persistent_control), |
592 | STRV_IFNOTNULL(runtime_control), | |
39591351 | 593 | STRV_IFNOTNULL(transient), |
463d0d15 | 594 | STRV_IFNOTNULL(generator_early), |
a0f84a10 | 595 | persistent_config, |
5f0a41da | 596 | USER_CONFIG_UNIT_PATH, |
cf7d80a5 | 597 | "/etc/systemd/user", |
a0f84a10 | 598 | runtime_config, |
cf7d80a5 | 599 | "/run/systemd/user", |
463d0d15 | 600 | STRV_IFNOTNULL(generator), |
cf7d80a5 ZJS |
601 | "/usr/local/lib/systemd/user", |
602 | "/usr/local/share/systemd/user", | |
603 | USER_DATA_UNIT_PATH, | |
604 | "/usr/lib/systemd/user", | |
605 | "/usr/share/systemd/user", | |
463d0d15 | 606 | STRV_IFNOTNULL(generator_late), |
07719a21 | 607 | NULL); |
463d0d15 LP |
608 | break; |
609 | ||
610 | case UNIT_FILE_USER: | |
611 | add = user_dirs(persistent_config, runtime_config, | |
39591351 | 612 | generator, generator_early, generator_late, |
80b1ae32 LP |
613 | transient, |
614 | persistent_config, runtime_control); | |
463d0d15 LP |
615 | break; |
616 | ||
617 | default: | |
618 | assert_not_reached("Hmm, unexpected scope?"); | |
619 | } | |
07719a21 | 620 | |
a3c4eb07 | 621 | if (!add) |
cf7d80a5 ZJS |
622 | return -ENOMEM; |
623 | ||
8f1e0ad4 LP |
624 | if (paths) { |
625 | r = strv_extend_strv(&paths, add, true); | |
626 | if (r < 0) | |
a3c4eb07 | 627 | return r; |
8f1e0ad4 LP |
628 | } else { |
629 | /* Small optimization: if paths is NULL (and it usually is), we can simply assign 'add' to it, | |
630 | * and don't have to copy anything */ | |
631 | paths = add; | |
632 | add = NULL; | |
633 | } | |
84e3543e LP |
634 | } |
635 | ||
e4bb56c7 | 636 | r = patch_root_prefix(&persistent_config, root); |
a0f84a10 LP |
637 | if (r < 0) |
638 | return r; | |
e4bb56c7 | 639 | r = patch_root_prefix(&runtime_config, root); |
a0f84a10 LP |
640 | if (r < 0) |
641 | return r; | |
642 | ||
e4bb56c7 | 643 | r = patch_root_prefix(&generator, root); |
a3c4eb07 LP |
644 | if (r < 0) |
645 | return r; | |
e4bb56c7 | 646 | r = patch_root_prefix(&generator_early, root); |
a3c4eb07 LP |
647 | if (r < 0) |
648 | return r; | |
e4bb56c7 | 649 | r = patch_root_prefix(&generator_late, root); |
a3c4eb07 LP |
650 | if (r < 0) |
651 | return r; | |
652 | ||
39591351 LP |
653 | r = patch_root_prefix(&transient, root); |
654 | if (r < 0) | |
655 | return r; | |
656 | ||
80b1ae32 LP |
657 | r = patch_root_prefix(&persistent_control, root); |
658 | if (r < 0) | |
659 | return r; | |
660 | ||
661 | r = patch_root_prefix(&runtime_control, root); | |
662 | if (r < 0) | |
663 | return r; | |
664 | ||
e215d211 | 665 | r = patch_root_prefix_strv(paths, root); |
a1453343 | 666 | if (r < 0) |
07719a21 | 667 | return -ENOMEM; |
07459bb6 | 668 | |
e215d211 ZJS |
669 | p->search_path = strv_uniq(paths); |
670 | paths = NULL; | |
a3c4eb07 | 671 | |
a0f84a10 LP |
672 | p->persistent_config = persistent_config; |
673 | p->runtime_config = runtime_config; | |
674 | persistent_config = runtime_config = NULL; | |
675 | ||
a3c4eb07 LP |
676 | p->generator = generator; |
677 | p->generator_early = generator_early; | |
678 | p->generator_late = generator_late; | |
679 | generator = generator_early = generator_late = NULL; | |
84e3543e | 680 | |
39591351 LP |
681 | p->transient = transient; |
682 | transient = NULL; | |
683 | ||
80b1ae32 LP |
684 | p->persistent_control = persistent_control; |
685 | p->runtime_control = runtime_control; | |
686 | persistent_control = runtime_control = NULL; | |
687 | ||
e4bb56c7 LP |
688 | p->root_dir = root; |
689 | root = NULL; | |
690 | ||
a1f31f47 ZJS |
691 | p->temporary_dir = tempdir; |
692 | tempdir = NULL; | |
693 | ||
84e3543e LP |
694 | return 0; |
695 | } | |
696 | ||
697 | void lookup_paths_free(LookupPaths *p) { | |
a3c4eb07 LP |
698 | if (!p) |
699 | return; | |
84e3543e | 700 | |
a3c4eb07 | 701 | p->search_path = strv_free(p->search_path); |
a0f84a10 LP |
702 | |
703 | p->persistent_config = mfree(p->persistent_config); | |
704 | p->runtime_config = mfree(p->runtime_config); | |
705 | ||
a3c4eb07 LP |
706 | p->generator = mfree(p->generator); |
707 | p->generator_early = mfree(p->generator_early); | |
708 | p->generator_late = mfree(p->generator_late); | |
e4bb56c7 | 709 | |
39591351 LP |
710 | p->transient = mfree(p->transient); |
711 | ||
80b1ae32 LP |
712 | p->persistent_control = mfree(p->persistent_control); |
713 | p->runtime_control = mfree(p->runtime_control); | |
714 | ||
e4bb56c7 | 715 | p->root_dir = mfree(p->root_dir); |
23115a60 | 716 | p->temporary_dir = mfree(p->temporary_dir); |
84e3543e | 717 | } |
cd64fd56 | 718 | |
a1453343 LP |
719 | int lookup_paths_reduce(LookupPaths *p) { |
720 | _cleanup_free_ struct stat *stats = NULL; | |
721 | size_t n_stats = 0, allocated = 0; | |
722 | unsigned c = 0; | |
723 | int r; | |
724 | ||
725 | assert(p); | |
726 | ||
727 | /* Drop duplicates and non-existing directories from the search path. We figure out whether two directories are | |
728 | * the same by comparing their device and inode numbers. Note one special tweak: when we have a root path set, | |
729 | * we do not follow symlinks when retrieving them, because the kernel wouldn't take the root prefix into | |
730 | * account when following symlinks. When we have no root path set this restriction does not apply however. */ | |
731 | ||
732 | if (!p->search_path) | |
733 | return 0; | |
734 | ||
735 | while (p->search_path[c]) { | |
736 | struct stat st; | |
737 | unsigned k; | |
738 | ||
739 | if (p->root_dir) | |
740 | r = lstat(p->search_path[c], &st); | |
741 | else | |
742 | r = stat(p->search_path[c], &st); | |
743 | if (r < 0) { | |
744 | if (errno == ENOENT) | |
745 | goto remove_item; | |
746 | ||
747 | /* If something we don't grok happened, let's better leave it in. */ | |
748 | log_debug_errno(errno, "Failed to stat %s: %m", p->search_path[c]); | |
749 | c++; | |
750 | continue; | |
751 | } | |
752 | ||
753 | for (k = 0; k < n_stats; k++) { | |
754 | if (stats[k].st_dev == st.st_dev && | |
755 | stats[k].st_ino == st.st_ino) | |
756 | break; | |
757 | } | |
758 | ||
759 | if (k < n_stats) /* Is there already an entry with the same device/inode? */ | |
760 | goto remove_item; | |
761 | ||
762 | if (!GREEDY_REALLOC(stats, allocated, n_stats+1)) | |
763 | return -ENOMEM; | |
764 | ||
765 | stats[n_stats++] = st; | |
766 | c++; | |
767 | continue; | |
768 | ||
769 | remove_item: | |
770 | free(p->search_path[c]); | |
771 | memmove(p->search_path + c, | |
772 | p->search_path + c + 1, | |
773 | (strv_length(p->search_path + c + 1) + 1) * sizeof(char*)); | |
774 | } | |
775 | ||
776 | if (strv_isempty(p->search_path)) { | |
777 | log_debug("Ignoring unit files."); | |
778 | p->search_path = strv_free(p->search_path); | |
779 | } else { | |
780 | _cleanup_free_ char *t; | |
781 | ||
782 | t = strv_join(p->search_path, "\n\t"); | |
783 | if (!t) | |
784 | return -ENOMEM; | |
785 | ||
786 | log_debug("Looking for unit files in (higher priority first):\n\t%s", t); | |
787 | } | |
788 | ||
789 | return 0; | |
790 | } | |
791 | ||
cd64fd56 LP |
792 | int lookup_paths_mkdir_generator(LookupPaths *p) { |
793 | int r, q; | |
794 | ||
795 | assert(p); | |
796 | ||
4943d143 LP |
797 | if (!p->generator || !p->generator_early || !p->generator_late) |
798 | return -EINVAL; | |
799 | ||
cd64fd56 LP |
800 | r = mkdir_p_label(p->generator, 0755); |
801 | ||
802 | q = mkdir_p_label(p->generator_early, 0755); | |
803 | if (q < 0 && r >= 0) | |
804 | r = q; | |
805 | ||
806 | q = mkdir_p_label(p->generator_late, 0755); | |
807 | if (q < 0 && r >= 0) | |
808 | r = q; | |
809 | ||
810 | return r; | |
811 | } | |
812 | ||
813 | void lookup_paths_trim_generator(LookupPaths *p) { | |
814 | assert(p); | |
815 | ||
816 | /* Trim empty dirs */ | |
817 | ||
818 | if (p->generator) | |
819 | (void) rmdir(p->generator); | |
cd64fd56 LP |
820 | if (p->generator_early) |
821 | (void) rmdir(p->generator_early); | |
cd64fd56 LP |
822 | if (p->generator_late) |
823 | (void) rmdir(p->generator_late); | |
824 | } | |
07a78643 LP |
825 | |
826 | void lookup_paths_flush_generator(LookupPaths *p) { | |
827 | assert(p); | |
828 | ||
80b1ae32 LP |
829 | /* Flush the generated unit files in full */ |
830 | ||
07a78643 LP |
831 | if (p->generator) |
832 | (void) rm_rf(p->generator, REMOVE_ROOT); | |
833 | if (p->generator_early) | |
834 | (void) rm_rf(p->generator_early, REMOVE_ROOT); | |
835 | if (p->generator_late) | |
836 | (void) rm_rf(p->generator_late, REMOVE_ROOT); | |
a1f31f47 ZJS |
837 | |
838 | if (p->temporary_dir) | |
839 | (void) rm_rf(p->temporary_dir, REMOVE_ROOT); | |
07a78643 | 840 | } |
a69b4fb0 LP |
841 | |
842 | char **generator_binary_paths(UnitFileScope scope) { | |
843 | ||
844 | switch (scope) { | |
845 | ||
846 | case UNIT_FILE_SYSTEM: | |
847 | return strv_new("/run/systemd/system-generators", | |
848 | "/etc/systemd/system-generators", | |
849 | "/usr/local/lib/systemd/system-generators", | |
850 | SYSTEM_GENERATOR_PATH, | |
851 | NULL); | |
852 | ||
853 | case UNIT_FILE_GLOBAL: | |
854 | case UNIT_FILE_USER: | |
855 | return strv_new("/run/systemd/user-generators", | |
856 | "/etc/systemd/user-generators", | |
857 | "/usr/local/lib/systemd/user-generators", | |
858 | USER_GENERATOR_PATH, | |
859 | NULL); | |
860 | ||
861 | default: | |
862 | assert_not_reached("Hmm, unexpected scope."); | |
863 | } | |
864 | } |