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d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
84e3543e LP |
2 | |
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
84e3543e LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
84e3543e | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
84e3543e LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
84e3543e LP |
22 | #include <stdlib.h> |
23 | #include <stdio.h> | |
67445f4e | 24 | #include <string.h> |
84e3543e LP |
25 | #include <errno.h> |
26 | ||
b5efdb8a | 27 | #include "alloc-util.h" |
84e3543e LP |
28 | #include "util.h" |
29 | #include "strv.h" | |
9eb977db | 30 | #include "path-util.h" |
a8ffe6fb | 31 | #include "install.h" |
07630cea LP |
32 | #include "string-util.h" |
33 | #include "path-lookup.h" | |
84e3543e | 34 | |
af2d49f7 | 35 | int user_config_home(char **config_home) { |
10e87ee7 | 36 | const char *e; |
26d04f86 | 37 | char *r; |
10e87ee7 | 38 | |
07719a21 LP |
39 | e = getenv("XDG_CONFIG_HOME"); |
40 | if (e) { | |
26d04f86 LP |
41 | r = strappend(e, "/systemd/user"); |
42 | if (!r) | |
10e87ee7 LP |
43 | return -ENOMEM; |
44 | ||
26d04f86 | 45 | *config_home = r; |
10e87ee7 LP |
46 | return 1; |
47 | } else { | |
48 | const char *home; | |
49 | ||
07719a21 LP |
50 | home = getenv("HOME"); |
51 | if (home) { | |
26d04f86 LP |
52 | r = strappend(home, "/.config/systemd/user"); |
53 | if (!r) | |
10e87ee7 LP |
54 | return -ENOMEM; |
55 | ||
26d04f86 | 56 | *config_home = r; |
10e87ee7 LP |
57 | return 1; |
58 | } | |
59 | } | |
60 | ||
61 | return 0; | |
62 | } | |
63 | ||
4d5dec23 | 64 | int user_runtime_dir(char **runtime_dir) { |
718880ba SA |
65 | const char *e; |
66 | char *r; | |
67 | ||
68 | e = getenv("XDG_RUNTIME_DIR"); | |
69 | if (e) { | |
70 | r = strappend(e, "/systemd/user"); | |
71 | if (!r) | |
72 | return -ENOMEM; | |
73 | ||
4d5dec23 | 74 | *runtime_dir = r; |
718880ba SA |
75 | return 1; |
76 | } | |
77 | ||
78 | return 0; | |
79 | } | |
80 | ||
e801700e ZJS |
81 | static int user_data_home_dir(char **dir, const char *suffix) { |
82 | const char *e; | |
83 | char *res; | |
84 | ||
85 | /* We don't treat /etc/xdg/systemd here as the spec | |
86 | * suggests because we assume that that is a link to | |
87 | * /etc/systemd/ anyway. */ | |
88 | ||
89 | e = getenv("XDG_DATA_HOME"); | |
90 | if (e) | |
91 | res = strappend(e, suffix); | |
92 | else { | |
93 | const char *home; | |
94 | ||
95 | home = getenv("HOME"); | |
96 | if (home) | |
97 | res = strjoin(home, "/.local/share", suffix, NULL); | |
98 | else | |
99 | return 0; | |
100 | } | |
101 | if (!res) | |
102 | return -ENOMEM; | |
103 | ||
104 | *dir = res; | |
105 | return 0; | |
106 | } | |
107 | ||
07719a21 LP |
108 | static char** user_dirs( |
109 | const char *generator, | |
110 | const char *generator_early, | |
111 | const char *generator_late) { | |
112 | ||
f437d5d2 | 113 | const char * const config_unit_paths[] = { |
f437d5d2 | 114 | USER_CONFIG_UNIT_PATH, |
4bf2bbb6 LP |
115 | "/etc/systemd/user", |
116 | NULL | |
f437d5d2 LP |
117 | }; |
118 | ||
718880ba SA |
119 | const char * const runtime_unit_path = "/run/systemd/user"; |
120 | ||
f437d5d2 LP |
121 | const char * const data_unit_paths[] = { |
122 | "/usr/local/lib/systemd/user", | |
123 | "/usr/local/share/systemd/user", | |
124 | USER_DATA_UNIT_PATH, | |
125 | "/usr/lib/systemd/user", | |
4bf2bbb6 LP |
126 | "/usr/share/systemd/user", |
127 | NULL | |
f437d5d2 LP |
128 | }; |
129 | ||
e801700e | 130 | const char *e; |
4d5dec23 | 131 | _cleanup_free_ char *config_home = NULL, *runtime_dir = NULL, *data_home = NULL; |
e3e45d4f | 132 | _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL; |
e801700e ZJS |
133 | _cleanup_free_ char **res = NULL; |
134 | char **tmp; | |
135 | int r; | |
84e3543e LP |
136 | |
137 | /* Implement the mechanisms defined in | |
138 | * | |
139 | * http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html | |
140 | * | |
141 | * We look in both the config and the data dirs because we | |
142 | * want to encourage that distributors ship their unit files | |
143 | * as data, and allow overriding as configuration. | |
144 | */ | |
145 | ||
af2d49f7 | 146 | if (user_config_home(&config_home) < 0) |
e801700e | 147 | return NULL; |
84e3543e | 148 | |
4d5dec23 | 149 | if (user_runtime_dir(&runtime_dir) < 0) |
e801700e | 150 | return NULL; |
84e3543e | 151 | |
07719a21 LP |
152 | e = getenv("XDG_CONFIG_DIRS"); |
153 | if (e) { | |
154 | config_dirs = strv_split(e, ":"); | |
155 | if (!config_dirs) | |
e801700e | 156 | return NULL; |
07719a21 | 157 | } |
84e3543e | 158 | |
e801700e ZJS |
159 | r = user_data_home_dir(&data_home, "/systemd/user"); |
160 | if (r < 0) | |
161 | return NULL; | |
84e3543e | 162 | |
07719a21 LP |
163 | e = getenv("XDG_DATA_DIRS"); |
164 | if (e) | |
84e3543e LP |
165 | data_dirs = strv_split(e, ":"); |
166 | else | |
ef3102bf | 167 | data_dirs = strv_new("/usr/local/share", |
ef3102bf | 168 | "/usr/share", |
ef3102bf | 169 | NULL); |
84e3543e | 170 | if (!data_dirs) |
e801700e | 171 | return NULL; |
84e3543e LP |
172 | |
173 | /* Now merge everything we found. */ | |
e3e45d4f | 174 | if (generator_early) |
e801700e ZJS |
175 | if (strv_extend(&res, generator_early) < 0) |
176 | return NULL; | |
07719a21 | 177 | |
e3e45d4f | 178 | if (config_home) |
e801700e ZJS |
179 | if (strv_extend(&res, config_home) < 0) |
180 | return NULL; | |
84e3543e | 181 | |
aa08982d | 182 | if (!strv_isempty(config_dirs)) |
e801700e ZJS |
183 | if (strv_extend_strv_concat(&res, config_dirs, "/systemd/user") < 0) |
184 | return NULL; | |
718880ba | 185 | |
e287086b | 186 | if (strv_extend_strv(&res, (char**) config_unit_paths, false) < 0) |
e801700e | 187 | return NULL; |
718880ba | 188 | |
aa08982d | 189 | if (runtime_dir) |
e801700e ZJS |
190 | if (strv_extend(&res, runtime_dir) < 0) |
191 | return NULL; | |
84e3543e | 192 | |
e801700e ZJS |
193 | if (strv_extend(&res, runtime_unit_path) < 0) |
194 | return NULL; | |
84e3543e | 195 | |
e3e45d4f | 196 | if (generator) |
e801700e ZJS |
197 | if (strv_extend(&res, generator) < 0) |
198 | return NULL; | |
07719a21 | 199 | |
e3e45d4f | 200 | if (data_home) |
e801700e ZJS |
201 | if (strv_extend(&res, data_home) < 0) |
202 | return NULL; | |
84e3543e | 203 | |
e3e45d4f | 204 | if (!strv_isempty(data_dirs)) |
e801700e ZJS |
205 | if (strv_extend_strv_concat(&res, data_dirs, "/systemd/user") < 0) |
206 | return NULL; | |
84e3543e | 207 | |
e287086b | 208 | if (strv_extend_strv(&res, (char**) data_unit_paths, false) < 0) |
e801700e | 209 | return NULL; |
84e3543e | 210 | |
e3e45d4f | 211 | if (generator_late) |
e801700e ZJS |
212 | if (strv_extend(&res, generator_late) < 0) |
213 | return NULL; | |
07719a21 | 214 | |
0f474365 | 215 | if (path_strv_make_absolute_cwd(res) < 0) |
e801700e | 216 | return NULL; |
84e3543e | 217 | |
e801700e ZJS |
218 | tmp = res; |
219 | res = NULL; | |
220 | return tmp; | |
221 | } | |
84e3543e | 222 | |
b2c23da8 LP |
223 | char **generator_paths(ManagerRunningAs running_as) { |
224 | if (running_as == MANAGER_USER) | |
33e1e5a7 ZJS |
225 | return strv_new("/run/systemd/user-generators", |
226 | "/etc/systemd/user-generators", | |
e801700e ZJS |
227 | "/usr/local/lib/systemd/user-generators", |
228 | USER_GENERATOR_PATH, | |
229 | NULL); | |
230 | else | |
33e1e5a7 ZJS |
231 | return strv_new("/run/systemd/system-generators", |
232 | "/etc/systemd/system-generators", | |
e801700e ZJS |
233 | "/usr/local/lib/systemd/system-generators", |
234 | SYSTEM_GENERATOR_PATH, | |
235 | NULL); | |
84e3543e LP |
236 | } |
237 | ||
07719a21 LP |
238 | int lookup_paths_init( |
239 | LookupPaths *p, | |
b2c23da8 | 240 | ManagerRunningAs running_as, |
07719a21 | 241 | bool personal, |
12ed81d9 | 242 | const char *root_dir, |
07719a21 LP |
243 | const char *generator, |
244 | const char *generator_early, | |
245 | const char *generator_late) { | |
246 | ||
84e3543e | 247 | const char *e; |
cf7d80a5 | 248 | bool append = false; /* Add items from SYSTEMD_UNIT_PATH before normal directories */ |
0f474365 | 249 | int r; |
84e3543e LP |
250 | |
251 | assert(p); | |
252 | ||
253 | /* First priority is whatever has been passed to us via env | |
254 | * vars */ | |
07719a21 LP |
255 | e = getenv("SYSTEMD_UNIT_PATH"); |
256 | if (e) { | |
cf7d80a5 ZJS |
257 | if (endswith(e, ":")) { |
258 | e = strndupa(e, strlen(e) - 1); | |
259 | append = true; | |
260 | } | |
261 | ||
262 | /* FIXME: empty components in other places should be | |
263 | * rejected. */ | |
264 | ||
0f474365 LP |
265 | r = path_split_and_make_absolute(e, &p->unit_path); |
266 | if (r < 0) | |
267 | return r; | |
07719a21 LP |
268 | } else |
269 | p->unit_path = NULL; | |
84e3543e | 270 | |
cf7d80a5 ZJS |
271 | if (!p->unit_path || append) { |
272 | /* Let's figure something out. */ | |
273 | ||
1d3bc017 | 274 | _cleanup_strv_free_ char **unit_path; |
84e3543e | 275 | |
07719a21 | 276 | /* For the user units we include share/ in the search |
cf7d80a5 ZJS |
277 | * path in order to comply with the XDG basedir spec. |
278 | * For the system stuff we avoid such nonsense. OTOH | |
279 | * we include /lib in the search path for the system | |
280 | * stuff but avoid it for user stuff. */ | |
07719a21 | 281 | |
b2c23da8 | 282 | if (running_as == MANAGER_USER) { |
c800e483 | 283 | if (personal) |
cf7d80a5 | 284 | unit_path = user_dirs(generator, generator_early, generator_late); |
c800e483 | 285 | else |
cf7d80a5 | 286 | unit_path = strv_new( |
07719a21 | 287 | /* If you modify this you also want to modify |
cf7d80a5 ZJS |
288 | * systemduserunitpath= in systemd.pc.in, and |
289 | * the arrays in user_dirs() above! */ | |
07719a21 | 290 | STRV_IFNOTNULL(generator_early), |
cf7d80a5 ZJS |
291 | USER_CONFIG_UNIT_PATH, |
292 | "/etc/systemd/user", | |
293 | "/run/systemd/user", | |
07719a21 | 294 | STRV_IFNOTNULL(generator), |
cf7d80a5 ZJS |
295 | "/usr/local/lib/systemd/user", |
296 | "/usr/local/share/systemd/user", | |
297 | USER_DATA_UNIT_PATH, | |
298 | "/usr/lib/systemd/user", | |
299 | "/usr/share/systemd/user", | |
07719a21 LP |
300 | STRV_IFNOTNULL(generator_late), |
301 | NULL); | |
cf7d80a5 ZJS |
302 | } else |
303 | unit_path = strv_new( | |
304 | /* If you modify this you also want to modify | |
305 | * systemdsystemunitpath= in systemd.pc.in! */ | |
306 | STRV_IFNOTNULL(generator_early), | |
307 | SYSTEM_CONFIG_UNIT_PATH, | |
308 | "/etc/systemd/system", | |
309 | "/run/systemd/system", | |
310 | STRV_IFNOTNULL(generator), | |
311 | "/usr/local/lib/systemd/system", | |
312 | SYSTEM_DATA_UNIT_PATH, | |
313 | "/usr/lib/systemd/system", | |
314 | #ifdef HAVE_SPLIT_USR | |
315 | "/lib/systemd/system", | |
316 | #endif | |
317 | STRV_IFNOTNULL(generator_late), | |
318 | NULL); | |
07719a21 | 319 | |
cf7d80a5 ZJS |
320 | if (!unit_path) |
321 | return -ENOMEM; | |
322 | ||
e287086b | 323 | r = strv_extend_strv(&p->unit_path, unit_path, false); |
cf7d80a5 ZJS |
324 | if (r < 0) |
325 | return r; | |
84e3543e LP |
326 | } |
327 | ||
7d8da2c9 | 328 | if (!path_strv_resolve_uniq(p->unit_path, root_dir)) |
07719a21 | 329 | return -ENOMEM; |
07459bb6 | 330 | |
07459bb6 | 331 | if (!strv_isempty(p->unit_path)) { |
7fd1b19b | 332 | _cleanup_free_ char *t = strv_join(p->unit_path, "\n\t"); |
07719a21 | 333 | if (!t) |
07459bb6 | 334 | return -ENOMEM; |
242c4e1c | 335 | log_debug("Looking for unit files in (higher priority first):\n\t%s", t); |
07459bb6 | 336 | } else { |
242c4e1c | 337 | log_debug("Ignoring unit files."); |
6796073e | 338 | p->unit_path = strv_free(p->unit_path); |
07459bb6 FF |
339 | } |
340 | ||
b2c23da8 | 341 | if (running_as == MANAGER_SYSTEM) { |
07459bb6 | 342 | #ifdef HAVE_SYSV_COMPAT |
84e3543e LP |
343 | /* /etc/init.d/ compatibility does not matter to users */ |
344 | ||
07719a21 LP |
345 | e = getenv("SYSTEMD_SYSVINIT_PATH"); |
346 | if (e) { | |
0f474365 LP |
347 | r = path_split_and_make_absolute(e, &p->sysvinit_path); |
348 | if (r < 0) | |
349 | return r; | |
07719a21 LP |
350 | } else |
351 | p->sysvinit_path = NULL; | |
84e3543e LP |
352 | |
353 | if (strv_isempty(p->sysvinit_path)) { | |
354 | strv_free(p->sysvinit_path); | |
355 | ||
07719a21 LP |
356 | p->sysvinit_path = strv_new( |
357 | SYSTEM_SYSVINIT_PATH, /* /etc/init.d/ */ | |
358 | NULL); | |
359 | if (!p->sysvinit_path) | |
84e3543e LP |
360 | return -ENOMEM; |
361 | } | |
362 | ||
07719a21 LP |
363 | e = getenv("SYSTEMD_SYSVRCND_PATH"); |
364 | if (e) { | |
0f474365 LP |
365 | r = path_split_and_make_absolute(e, &p->sysvrcnd_path); |
366 | if (r < 0) | |
367 | return r; | |
07719a21 LP |
368 | } else |
369 | p->sysvrcnd_path = NULL; | |
84e3543e LP |
370 | |
371 | if (strv_isempty(p->sysvrcnd_path)) { | |
372 | strv_free(p->sysvrcnd_path); | |
373 | ||
07719a21 LP |
374 | p->sysvrcnd_path = strv_new( |
375 | SYSTEM_SYSVRCND_PATH, /* /etc/rcN.d/ */ | |
376 | NULL); | |
377 | if (!p->sysvrcnd_path) | |
84e3543e LP |
378 | return -ENOMEM; |
379 | } | |
84e3543e | 380 | |
7d8da2c9 | 381 | if (!path_strv_resolve_uniq(p->sysvinit_path, root_dir)) |
07719a21 | 382 | return -ENOMEM; |
84e3543e | 383 | |
7d8da2c9 | 384 | if (!path_strv_resolve_uniq(p->sysvrcnd_path, root_dir)) |
07719a21 | 385 | return -ENOMEM; |
84e3543e | 386 | |
07459bb6 | 387 | if (!strv_isempty(p->sysvinit_path)) { |
7fd1b19b | 388 | _cleanup_free_ char *t = strv_join(p->sysvinit_path, "\n\t"); |
07719a21 | 389 | if (!t) |
07459bb6 | 390 | return -ENOMEM; |
242c4e1c | 391 | log_debug("Looking for SysV init scripts in:\n\t%s", t); |
07459bb6 | 392 | } else { |
242c4e1c | 393 | log_debug("Ignoring SysV init scripts."); |
6796073e | 394 | p->sysvinit_path = strv_free(p->sysvinit_path); |
07459bb6 | 395 | } |
84e3543e | 396 | |
07459bb6 | 397 | if (!strv_isempty(p->sysvrcnd_path)) { |
7fd1b19b | 398 | _cleanup_free_ char *t = |
7ad94c71 | 399 | strv_join(p->sysvrcnd_path, "\n\t"); |
07719a21 | 400 | if (!t) |
07459bb6 | 401 | return -ENOMEM; |
84e3543e | 402 | |
07459bb6 | 403 | log_debug("Looking for SysV rcN.d links in:\n\t%s", t); |
07459bb6 FF |
404 | } else { |
405 | log_debug("Ignoring SysV rcN.d links."); | |
6796073e | 406 | p->sysvrcnd_path = strv_free(p->sysvrcnd_path); |
07459bb6 FF |
407 | } |
408 | #else | |
242c4e1c | 409 | log_debug("SysV init scripts and rcN.d links support disabled"); |
07459bb6 | 410 | #endif |
84e3543e LP |
411 | } |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
416 | void lookup_paths_free(LookupPaths *p) { | |
417 | assert(p); | |
418 | ||
6796073e | 419 | p->unit_path = strv_free(p->unit_path); |
07459bb6 FF |
420 | |
421 | #ifdef HAVE_SYSV_COMPAT | |
0f474365 LP |
422 | p->sysvinit_path = strv_free(p->sysvinit_path); |
423 | p->sysvrcnd_path = strv_free(p->sysvrcnd_path); | |
07459bb6 | 424 | #endif |
84e3543e | 425 | } |
60d27f19 IS |
426 | |
427 | int lookup_paths_init_from_scope(LookupPaths *paths, | |
428 | UnitFileScope scope, | |
429 | const char *root_dir) { | |
430 | assert(paths); | |
431 | assert(scope >= 0); | |
432 | assert(scope < _UNIT_FILE_SCOPE_MAX); | |
433 | ||
434 | zero(*paths); | |
435 | ||
436 | return lookup_paths_init(paths, | |
b2c23da8 | 437 | scope == UNIT_FILE_SYSTEM ? MANAGER_SYSTEM : MANAGER_USER, |
60d27f19 IS |
438 | scope == UNIT_FILE_USER, |
439 | root_dir, | |
440 | NULL, NULL, NULL); | |
441 | } |