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5008d581 LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
3b63d2d3 | 6 | Copyright 2010 Lennart Poettering, Kay Sievers |
5008d581 LP |
7 | |
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
16 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <unistd.h> | |
23 | #include <fcntl.h> | |
24 | #include <errno.h> | |
25 | #include <string.h> | |
26 | #include <sys/stat.h> | |
27 | #include <limits.h> | |
28 | #include <dirent.h> | |
29 | #include <grp.h> | |
30 | #include <pwd.h> | |
3b63d2d3 LP |
31 | #include <stdio.h> |
32 | #include <stdlib.h> | |
33 | #include <stddef.h> | |
34 | #include <getopt.h> | |
35 | #include <stdbool.h> | |
36 | #include <time.h> | |
37 | #include <sys/types.h> | |
38 | #include <sys/param.h> | |
b8bb3e8f LP |
39 | #include <glob.h> |
40 | #include <fnmatch.h> | |
5008d581 LP |
41 | |
42 | #include "log.h" | |
43 | #include "util.h" | |
44 | #include "strv.h" | |
45 | #include "label.h" | |
3b63d2d3 | 46 | #include "set.h" |
5008d581 | 47 | |
01000479 | 48 | /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates |
5008d581 | 49 | * them in the file system. This is intended to be used to create |
db019b8d KS |
50 | * properly owned directories beneath /tmp, /var/tmp, /run, which are |
51 | * volatile and hence need to be recreated on bootup. */ | |
5008d581 | 52 | |
3b63d2d3 | 53 | enum { |
b8bb3e8f | 54 | /* These ones take file names */ |
3b63d2d3 LP |
55 | CREATE_FILE = 'f', |
56 | TRUNCATE_FILE = 'F', | |
57 | CREATE_DIRECTORY = 'd', | |
58 | TRUNCATE_DIRECTORY = 'D', | |
b8bb3e8f LP |
59 | |
60 | /* These ones take globs */ | |
3b63d2d3 LP |
61 | IGNORE_PATH = 'x', |
62 | REMOVE_PATH = 'r', | |
63 | RECURSIVE_REMOVE_PATH = 'R' | |
64 | }; | |
65 | ||
66 | typedef struct Item { | |
5008d581 | 67 | char type; |
3b63d2d3 LP |
68 | |
69 | char *path; | |
5008d581 LP |
70 | uid_t uid; |
71 | gid_t gid; | |
3b63d2d3 LP |
72 | mode_t mode; |
73 | usec_t age; | |
74 | ||
75 | bool uid_set:1; | |
76 | bool gid_set:1; | |
77 | bool mode_set:1; | |
78 | bool age_set:1; | |
79 | } Item; | |
80 | ||
b8bb3e8f | 81 | static Hashmap *items = NULL, *globs = NULL; |
17b90525 | 82 | static Set *unix_sockets = NULL; |
3b63d2d3 LP |
83 | |
84 | static bool arg_create = false; | |
85 | static bool arg_clean = false; | |
86 | static bool arg_remove = false; | |
87 | ||
fba6e687 LP |
88 | static const char *arg_prefix = NULL; |
89 | ||
3b63d2d3 LP |
90 | #define MAX_DEPTH 256 |
91 | ||
b8bb3e8f LP |
92 | static bool needs_glob(int t) { |
93 | return t == IGNORE_PATH || t == REMOVE_PATH || t == RECURSIVE_REMOVE_PATH; | |
94 | } | |
95 | ||
96 | static struct Item* find_glob(Hashmap *h, const char *match) { | |
97 | Item *j; | |
98 | Iterator i; | |
99 | ||
100 | HASHMAP_FOREACH(j, h, i) | |
101 | if (fnmatch(j->path, match, FNM_PATHNAME|FNM_PERIOD) == 0) | |
102 | return j; | |
103 | ||
104 | return NULL; | |
105 | } | |
106 | ||
17b90525 LP |
107 | static void load_unix_sockets(void) { |
108 | FILE *f = NULL; | |
109 | char line[LINE_MAX]; | |
110 | ||
111 | if (unix_sockets) | |
112 | return; | |
113 | ||
114 | /* We maintain a cache of the sockets we found in | |
115 | * /proc/net/unix to speed things up a little. */ | |
116 | ||
117 | if (!(unix_sockets = set_new(string_hash_func, string_compare_func))) | |
118 | return; | |
119 | ||
120 | if (!(f = fopen("/proc/net/unix", "re"))) | |
121 | return; | |
122 | ||
123 | if (!(fgets(line, sizeof(line), f))) | |
124 | goto fail; | |
125 | ||
126 | for (;;) { | |
127 | char *p, *s; | |
128 | int k; | |
129 | ||
130 | if (!(fgets(line, sizeof(line), f))) | |
131 | break; | |
132 | ||
133 | truncate_nl(line); | |
134 | ||
135 | if (strlen(line) < 53) | |
136 | continue; | |
137 | ||
138 | p = line + 53; | |
139 | p += strspn(p, WHITESPACE); | |
140 | p += strcspn(p, WHITESPACE); | |
141 | p += strspn(p, WHITESPACE); | |
142 | ||
143 | if (*p != '/') | |
144 | continue; | |
145 | ||
146 | if (!(s = strdup(p))) | |
147 | goto fail; | |
148 | ||
4ff21d85 LP |
149 | path_kill_slashes(s); |
150 | ||
17b90525 LP |
151 | if ((k = set_put(unix_sockets, s)) < 0) { |
152 | free(s); | |
153 | ||
154 | if (k != -EEXIST) | |
155 | goto fail; | |
156 | } | |
157 | } | |
158 | ||
159 | return; | |
160 | ||
161 | fail: | |
162 | set_free_free(unix_sockets); | |
163 | unix_sockets = NULL; | |
164 | ||
165 | if (f) | |
166 | fclose(f); | |
167 | } | |
168 | ||
169 | static bool unix_socket_alive(const char *fn) { | |
170 | assert(fn); | |
171 | ||
172 | load_unix_sockets(); | |
173 | ||
174 | if (unix_sockets) | |
175 | return !!set_get(unix_sockets, (char*) fn); | |
176 | ||
177 | /* We don't know, so assume yes */ | |
178 | return true; | |
179 | } | |
180 | ||
3b63d2d3 LP |
181 | static int dir_cleanup( |
182 | const char *p, | |
183 | DIR *d, | |
184 | const struct stat *ds, | |
185 | usec_t cutoff, | |
186 | dev_t rootdev, | |
187 | bool mountpoint, | |
188 | int maxdepth) | |
189 | { | |
190 | struct dirent *dent; | |
191 | struct timespec times[2]; | |
192 | bool deleted = false; | |
193 | char *sub_path = NULL; | |
194 | int r = 0; | |
195 | ||
196 | while ((dent = readdir(d))) { | |
197 | struct stat s; | |
198 | usec_t age; | |
199 | ||
200 | if (streq(dent->d_name, ".") || | |
201 | streq(dent->d_name, "..")) | |
202 | continue; | |
5008d581 | 203 | |
3b63d2d3 | 204 | if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) { |
5008d581 | 205 | |
3b63d2d3 LP |
206 | if (errno != ENOENT) { |
207 | log_error("stat(%s/%s) failed: %m", p, dent->d_name); | |
208 | r = -errno; | |
209 | } | |
210 | ||
211 | continue; | |
212 | } | |
213 | ||
214 | /* Stay on the same filesystem */ | |
215 | if (s.st_dev != rootdev) | |
216 | continue; | |
217 | ||
218 | /* Do not delete read-only files owned by root */ | |
219 | if (s.st_uid == 0 && !(s.st_mode & S_IWUSR)) | |
220 | continue; | |
221 | ||
222 | free(sub_path); | |
223 | sub_path = NULL; | |
224 | ||
225 | if (asprintf(&sub_path, "%s/%s", p, dent->d_name) < 0) { | |
226 | log_error("Out of memory"); | |
227 | r = -ENOMEM; | |
228 | goto finish; | |
229 | } | |
230 | ||
231 | /* Is there an item configured for this path? */ | |
232 | if (hashmap_get(items, sub_path)) | |
233 | continue; | |
234 | ||
b8bb3e8f LP |
235 | if (find_glob(globs, sub_path)) |
236 | continue; | |
237 | ||
3b63d2d3 LP |
238 | if (S_ISDIR(s.st_mode)) { |
239 | ||
240 | if (mountpoint && | |
241 | streq(dent->d_name, "lost+found") && | |
242 | s.st_uid == 0) | |
243 | continue; | |
244 | ||
245 | if (maxdepth <= 0) | |
246 | log_warning("Reached max depth on %s.", sub_path); | |
247 | else { | |
248 | DIR *sub_dir; | |
249 | int q; | |
250 | ||
a247755d | 251 | sub_dir = xopendirat(dirfd(d), dent->d_name, O_NOFOLLOW); |
3b63d2d3 LP |
252 | if (sub_dir == NULL) { |
253 | if (errno != ENOENT) { | |
254 | log_error("opendir(%s/%s) failed: %m", p, dent->d_name); | |
255 | r = -errno; | |
256 | } | |
257 | ||
258 | continue; | |
259 | } | |
260 | ||
261 | q = dir_cleanup(sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1); | |
262 | closedir(sub_dir); | |
263 | ||
264 | if (q < 0) | |
265 | r = q; | |
266 | } | |
267 | ||
268 | /* Ignore ctime, we change it when deleting */ | |
269 | age = MAX(timespec_load(&s.st_mtim), | |
270 | timespec_load(&s.st_atim)); | |
271 | if (age >= cutoff) | |
272 | continue; | |
273 | ||
274 | log_debug("rmdir '%s'\n", sub_path); | |
275 | ||
276 | if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) { | |
277 | if (errno != ENOENT && errno != ENOTEMPTY) { | |
278 | log_error("rmdir(%s): %m", sub_path); | |
279 | r = -errno; | |
280 | } | |
281 | } | |
282 | ||
283 | } else { | |
9c73736d LP |
284 | /* Skip files for which the sticky bit is |
285 | * set. These are semantics we define, and are | |
286 | * unknown elsewhere. See XDG_RUNTIME_DIR | |
287 | * specification for details. */ | |
288 | if (s.st_mode & S_ISVTX) | |
289 | continue; | |
290 | ||
17b90525 | 291 | if (mountpoint && S_ISREG(s.st_mode)) { |
3b63d2d3 LP |
292 | if (streq(dent->d_name, ".journal") && |
293 | s.st_uid == 0) | |
294 | continue; | |
295 | ||
296 | if (streq(dent->d_name, "aquota.user") || | |
297 | streq(dent->d_name, "aquota.group")) | |
298 | continue; | |
299 | } | |
300 | ||
17b90525 LP |
301 | /* Ignore sockets that are listed in /proc/net/unix */ |
302 | if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path)) | |
303 | continue; | |
304 | ||
78ab08eb LP |
305 | /* Ignore device nodes */ |
306 | if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) | |
307 | continue; | |
308 | ||
3b63d2d3 LP |
309 | age = MAX3(timespec_load(&s.st_mtim), |
310 | timespec_load(&s.st_atim), | |
311 | timespec_load(&s.st_ctim)); | |
312 | ||
313 | if (age >= cutoff) | |
314 | continue; | |
315 | ||
316 | log_debug("unlink '%s'\n", sub_path); | |
317 | ||
318 | if (unlinkat(dirfd(d), dent->d_name, 0) < 0) { | |
319 | if (errno != ENOENT) { | |
320 | log_error("unlink(%s): %m", sub_path); | |
321 | r = -errno; | |
322 | } | |
323 | } | |
324 | ||
325 | deleted = true; | |
326 | } | |
327 | } | |
328 | ||
329 | finish: | |
330 | if (deleted) { | |
331 | /* Restore original directory timestamps */ | |
332 | times[0] = ds->st_atim; | |
333 | times[1] = ds->st_mtim; | |
334 | ||
335 | if (futimens(dirfd(d), times) < 0) | |
336 | log_error("utimensat(%s): %m", p); | |
337 | } | |
338 | ||
339 | free(sub_path); | |
340 | ||
341 | return r; | |
342 | } | |
343 | ||
344 | static int clean_item(Item *i) { | |
345 | DIR *d; | |
346 | struct stat s, ps; | |
347 | bool mountpoint; | |
348 | int r; | |
349 | usec_t cutoff, n; | |
350 | ||
351 | assert(i); | |
352 | ||
353 | if (i->type != CREATE_DIRECTORY && | |
354 | i->type != TRUNCATE_DIRECTORY && | |
355 | i->type != IGNORE_PATH) | |
356 | return 0; | |
357 | ||
358 | if (!i->age_set || i->age <= 0) | |
359 | return 0; | |
360 | ||
361 | n = now(CLOCK_REALTIME); | |
362 | if (n < i->age) | |
363 | return 0; | |
364 | ||
365 | cutoff = n - i->age; | |
366 | ||
367 | d = opendir(i->path); | |
368 | if (!d) { | |
369 | if (errno == ENOENT) | |
370 | return 0; | |
371 | ||
372 | log_error("Failed to open directory %s: %m", i->path); | |
373 | return -errno; | |
374 | } | |
375 | ||
376 | if (fstat(dirfd(d), &s) < 0) { | |
377 | log_error("stat(%s) failed: %m", i->path); | |
378 | r = -errno; | |
5008d581 LP |
379 | goto finish; |
380 | } | |
381 | ||
3b63d2d3 LP |
382 | if (!S_ISDIR(s.st_mode)) { |
383 | log_error("%s is not a directory.", i->path); | |
384 | r = -ENOTDIR; | |
5008d581 LP |
385 | goto finish; |
386 | } | |
387 | ||
3b63d2d3 LP |
388 | if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) { |
389 | log_error("stat(%s/..) failed: %m", i->path); | |
390 | r = -errno; | |
5008d581 | 391 | goto finish; |
4aa8b15b | 392 | } |
5008d581 | 393 | |
3b63d2d3 LP |
394 | mountpoint = s.st_dev != ps.st_dev || |
395 | (s.st_dev == ps.st_dev && s.st_ino == ps.st_ino); | |
5008d581 | 396 | |
3b63d2d3 | 397 | r = dir_cleanup(i->path, d, &s, cutoff, s.st_dev, mountpoint, MAX_DEPTH); |
5008d581 | 398 | |
3b63d2d3 LP |
399 | finish: |
400 | if (d) | |
401 | closedir(d); | |
5008d581 | 402 | |
3b63d2d3 LP |
403 | return r; |
404 | } | |
5008d581 | 405 | |
3b63d2d3 LP |
406 | static int create_item(Item *i) { |
407 | int fd = -1, r; | |
408 | mode_t u; | |
409 | struct stat st; | |
5008d581 | 410 | |
3b63d2d3 | 411 | assert(i); |
5008d581 | 412 | |
3b63d2d3 LP |
413 | switch (i->type) { |
414 | ||
415 | case IGNORE_PATH: | |
416 | case REMOVE_PATH: | |
417 | case RECURSIVE_REMOVE_PATH: | |
418 | return 0; | |
5008d581 | 419 | |
3b63d2d3 LP |
420 | case CREATE_FILE: |
421 | case TRUNCATE_FILE: | |
5008d581 LP |
422 | |
423 | u = umask(0); | |
3b63d2d3 LP |
424 | fd = open(i->path, O_CREAT|O_NDELAY|O_CLOEXEC|O_WRONLY|O_NOCTTY|O_NOFOLLOW| |
425 | (i->type == TRUNCATE_FILE ? O_TRUNC : 0), i->mode); | |
5008d581 LP |
426 | umask(u); |
427 | ||
428 | if (fd < 0) { | |
3b63d2d3 | 429 | log_error("Failed to create file %s: %m", i->path); |
4aa8b15b | 430 | r = -errno; |
5008d581 LP |
431 | goto finish; |
432 | } | |
433 | ||
434 | if (fstat(fd, &st) < 0) { | |
3b63d2d3 | 435 | log_error("stat(%s) failed: %m", i->path); |
4aa8b15b | 436 | r = -errno; |
5008d581 LP |
437 | goto finish; |
438 | } | |
439 | ||
440 | if (!S_ISREG(st.st_mode)) { | |
3b63d2d3 | 441 | log_error("%s is not a file.", i->path); |
4aa8b15b | 442 | r = -EEXIST; |
5008d581 LP |
443 | goto finish; |
444 | } | |
445 | ||
3b63d2d3 LP |
446 | if (i->mode_set) |
447 | if (fchmod(fd, i->mode) < 0) { | |
448 | log_error("chmod(%s) failed: %m", i->path); | |
449 | r = -errno; | |
450 | goto finish; | |
451 | } | |
5008d581 | 452 | |
3b63d2d3 | 453 | if (i->uid_set || i->gid_set) |
5008d581 | 454 | if (fchown(fd, |
3b63d2d3 LP |
455 | i->uid_set ? i->uid : (uid_t) -1, |
456 | i->gid_set ? i->gid : (gid_t) -1) < 0) { | |
457 | log_error("chown(%s) failed: %m", i->path); | |
4aa8b15b | 458 | r = -errno; |
5008d581 LP |
459 | goto finish; |
460 | } | |
5008d581 | 461 | |
3b63d2d3 LP |
462 | break; |
463 | ||
464 | case TRUNCATE_DIRECTORY: | |
465 | case CREATE_DIRECTORY: | |
5008d581 LP |
466 | |
467 | u = umask(0); | |
33366862 | 468 | mkdir_parents(i->path, 0755); |
3b63d2d3 | 469 | r = mkdir(i->path, i->mode); |
5008d581 LP |
470 | umask(u); |
471 | ||
472 | if (r < 0 && errno != EEXIST) { | |
3b63d2d3 | 473 | log_error("Failed to create directory %s: %m", i->path); |
4aa8b15b | 474 | r = -errno; |
5008d581 LP |
475 | goto finish; |
476 | } | |
477 | ||
3b63d2d3 LP |
478 | if (stat(i->path, &st) < 0) { |
479 | log_error("stat(%s) failed: %m", i->path); | |
4aa8b15b | 480 | r = -errno; |
5008d581 LP |
481 | goto finish; |
482 | } | |
483 | ||
484 | if (!S_ISDIR(st.st_mode)) { | |
3b63d2d3 | 485 | log_error("%s is not a directory.", i->path); |
4aa8b15b | 486 | r = -EEXIST; |
5008d581 LP |
487 | goto finish; |
488 | } | |
489 | ||
3b63d2d3 LP |
490 | if (i->mode_set) |
491 | if (chmod(i->path, i->mode) < 0) { | |
492 | log_error("chmod(%s) failed: %m", i->path); | |
493 | r = -errno; | |
494 | goto finish; | |
495 | } | |
5008d581 | 496 | |
3b63d2d3 LP |
497 | if (i->uid_set || i->gid_set) |
498 | if (chown(i->path, | |
499 | i->uid_set ? i->uid : (uid_t) -1, | |
500 | i->gid_set ? i->gid : (gid_t) -1) < 0) { | |
5008d581 | 501 | |
3b63d2d3 | 502 | log_error("chown(%s) failed: %m", i->path); |
4aa8b15b | 503 | r = -errno; |
5008d581 LP |
504 | goto finish; |
505 | } | |
3b63d2d3 LP |
506 | |
507 | break; | |
508 | } | |
509 | ||
c904f64d | 510 | if ((r = label_fix(i->path, false)) < 0) |
3b63d2d3 LP |
511 | goto finish; |
512 | ||
513 | log_debug("%s created successfully.", i->path); | |
514 | ||
515 | finish: | |
516 | if (fd >= 0) | |
517 | close_nointr_nofail(fd); | |
518 | ||
519 | return r; | |
520 | } | |
521 | ||
b8bb3e8f | 522 | static int remove_item(Item *i, const char *instance) { |
3b63d2d3 LP |
523 | int r; |
524 | ||
525 | assert(i); | |
526 | ||
527 | switch (i->type) { | |
528 | ||
529 | case CREATE_FILE: | |
530 | case TRUNCATE_FILE: | |
531 | case CREATE_DIRECTORY: | |
532 | case IGNORE_PATH: | |
533 | break; | |
534 | ||
535 | case REMOVE_PATH: | |
b8bb3e8f LP |
536 | if (remove(instance) < 0 && errno != ENOENT) { |
537 | log_error("remove(%s): %m", instance); | |
3b63d2d3 | 538 | return -errno; |
5008d581 | 539 | } |
3b63d2d3 LP |
540 | |
541 | break; | |
542 | ||
543 | case TRUNCATE_DIRECTORY: | |
544 | case RECURSIVE_REMOVE_PATH: | |
b8bb3e8f | 545 | if ((r = rm_rf(instance, false, i->type == RECURSIVE_REMOVE_PATH)) < 0 && |
3b63d2d3 | 546 | r != -ENOENT) { |
b8bb3e8f | 547 | log_error("rm_rf(%s): %s", instance, strerror(-r)); |
3b63d2d3 LP |
548 | return r; |
549 | } | |
550 | ||
551 | break; | |
552 | } | |
553 | ||
554 | return 0; | |
555 | } | |
556 | ||
b8bb3e8f LP |
557 | static int remove_item_glob(Item *i) { |
558 | assert(i); | |
559 | ||
560 | switch (i->type) { | |
561 | ||
562 | case CREATE_FILE: | |
563 | case TRUNCATE_FILE: | |
564 | case CREATE_DIRECTORY: | |
565 | case IGNORE_PATH: | |
566 | break; | |
567 | ||
568 | case REMOVE_PATH: | |
569 | case TRUNCATE_DIRECTORY: | |
570 | case RECURSIVE_REMOVE_PATH: { | |
571 | int r = 0, k; | |
572 | glob_t g; | |
573 | char **fn; | |
574 | ||
575 | zero(g); | |
576 | ||
577 | errno = 0; | |
578 | if ((k = glob(i->path, GLOB_NOSORT|GLOB_BRACE, NULL, &g)) != 0) { | |
579 | ||
580 | if (k != GLOB_NOMATCH) { | |
581 | if (errno != 0) | |
582 | errno = EIO; | |
583 | ||
584 | log_error("glob(%s) failed: %m", i->path); | |
585 | return -errno; | |
586 | } | |
587 | } | |
588 | ||
589 | STRV_FOREACH(fn, g.gl_pathv) | |
590 | if ((k = remove_item(i, *fn)) < 0) | |
591 | r = k; | |
592 | ||
593 | globfree(&g); | |
594 | return r; | |
595 | } | |
596 | } | |
597 | ||
598 | return 0; | |
599 | } | |
600 | ||
3b63d2d3 LP |
601 | static int process_item(Item *i) { |
602 | int r, q, p; | |
603 | ||
604 | assert(i); | |
605 | ||
606 | r = arg_create ? create_item(i) : 0; | |
b8bb3e8f | 607 | q = arg_remove ? remove_item_glob(i) : 0; |
3b63d2d3 LP |
608 | p = arg_clean ? clean_item(i) : 0; |
609 | ||
610 | if (r < 0) | |
611 | return r; | |
612 | ||
613 | if (q < 0) | |
614 | return q; | |
615 | ||
616 | return p; | |
617 | } | |
618 | ||
619 | static void item_free(Item *i) { | |
620 | assert(i); | |
621 | ||
622 | free(i->path); | |
623 | free(i); | |
624 | } | |
625 | ||
fba6e687 | 626 | static int parse_line(const char *fname, unsigned line, const char *buffer) { |
3b63d2d3 LP |
627 | Item *i; |
628 | char *mode = NULL, *user = NULL, *group = NULL, *age = NULL; | |
bd40a2d8 | 629 | int r; |
3b63d2d3 LP |
630 | |
631 | assert(fname); | |
632 | assert(line >= 1); | |
633 | assert(buffer); | |
634 | ||
635 | if (!(i = new0(Item, 1))) { | |
636 | log_error("Out of memory"); | |
637 | return -ENOMEM; | |
638 | } | |
639 | ||
bd40a2d8 LP |
640 | if (sscanf(buffer, |
641 | "%c " | |
642 | "%ms " | |
643 | "%ms " | |
644 | "%ms " | |
645 | "%ms " | |
646 | "%ms", | |
647 | &i->type, | |
648 | &i->path, | |
649 | &mode, | |
650 | &user, | |
651 | &group, | |
652 | &age) < 2) { | |
3b63d2d3 LP |
653 | log_error("[%s:%u] Syntax error.", fname, line); |
654 | r = -EIO; | |
655 | goto finish; | |
5008d581 LP |
656 | } |
657 | ||
3b63d2d3 | 658 | if (i->type != CREATE_FILE && |
3b63d2d3 | 659 | i->type != TRUNCATE_FILE && |
abe35cc2 GSB |
660 | i->type != CREATE_DIRECTORY && |
661 | i->type != TRUNCATE_DIRECTORY && | |
3b63d2d3 LP |
662 | i->type != IGNORE_PATH && |
663 | i->type != REMOVE_PATH && | |
664 | i->type != RECURSIVE_REMOVE_PATH) { | |
665 | log_error("[%s:%u] Unknown file type '%c'.", fname, line, i->type); | |
666 | r = -EBADMSG; | |
4aa8b15b | 667 | goto finish; |
3b63d2d3 LP |
668 | } |
669 | ||
670 | if (!path_is_absolute(i->path)) { | |
671 | log_error("[%s:%u] Path '%s' not absolute.", fname, line, i->path); | |
672 | r = -EBADMSG; | |
673 | goto finish; | |
674 | } | |
675 | ||
676 | path_kill_slashes(i->path); | |
677 | ||
fba6e687 | 678 | if (arg_prefix && !path_startswith(i->path, arg_prefix)) { |
3b63d2d3 LP |
679 | r = 0; |
680 | goto finish; | |
681 | } | |
5008d581 | 682 | |
3b63d2d3 LP |
683 | if (user && !streq(user, "-")) { |
684 | unsigned long lu; | |
685 | struct passwd *p; | |
686 | ||
687 | if (streq(user, "root") || streq(user, "0")) | |
688 | i->uid = 0; | |
689 | else if (safe_atolu(user, &lu) >= 0) | |
690 | i->uid = (uid_t) lu; | |
691 | else if ((p = getpwnam(user))) | |
692 | i->uid = p->pw_uid; | |
693 | else { | |
694 | log_error("[%s:%u] Unknown user '%s'.", fname, line, user); | |
695 | r = -ENOENT; | |
696 | goto finish; | |
697 | } | |
698 | ||
699 | i->uid_set = true; | |
700 | } | |
701 | ||
702 | if (group && !streq(group, "-")) { | |
703 | unsigned long lu; | |
704 | struct group *g; | |
705 | ||
706 | if (streq(group, "root") || streq(group, "0")) | |
707 | i->gid = 0; | |
708 | else if (safe_atolu(group, &lu) >= 0) | |
709 | i->gid = (gid_t) lu; | |
710 | else if ((g = getgrnam(group))) | |
711 | i->gid = g->gr_gid; | |
712 | else { | |
713 | log_error("[%s:%u] Unknown group '%s'.", fname, line, group); | |
714 | r = -ENOENT; | |
715 | goto finish; | |
716 | } | |
717 | ||
718 | i->gid_set = true; | |
719 | } | |
720 | ||
721 | if (mode && !streq(mode, "-")) { | |
722 | unsigned m; | |
723 | ||
724 | if (sscanf(mode, "%o", &m) != 1) { | |
725 | log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode); | |
726 | r = -ENOENT; | |
727 | goto finish; | |
728 | } | |
729 | ||
730 | i->mode = m; | |
731 | i->mode_set = true; | |
732 | } else | |
733 | i->mode = i->type == CREATE_DIRECTORY ? 0755 : 0644; | |
734 | ||
735 | if (age && !streq(age, "-")) { | |
736 | if (parse_usec(age, &i->age) < 0) { | |
737 | log_error("[%s:%u] Invalid age '%s'.", fname, line, age); | |
738 | r = -EBADMSG; | |
739 | goto finish; | |
740 | } | |
741 | ||
742 | i->age_set = true; | |
743 | } | |
744 | ||
b8bb3e8f | 745 | if ((r = hashmap_put(needs_glob(i->type) ? globs : items, i->path, i)) < 0) { |
022707d9 LP |
746 | if (r == -EEXIST) { |
747 | log_warning("Two or more conflicting lines for %s configured, ignoring.", i->path); | |
748 | r = 0; | |
749 | goto finish; | |
750 | } | |
751 | ||
3b63d2d3 LP |
752 | log_error("Failed to insert item %s: %s", i->path, strerror(-r)); |
753 | goto finish; | |
754 | } | |
755 | ||
756 | i = NULL; | |
4aa8b15b | 757 | r = 0; |
5008d581 LP |
758 | |
759 | finish: | |
5008d581 LP |
760 | free(user); |
761 | free(group); | |
3b63d2d3 LP |
762 | free(mode); |
763 | free(age); | |
5008d581 | 764 | |
3b63d2d3 LP |
765 | if (i) |
766 | item_free(i); | |
4aa8b15b LP |
767 | |
768 | return r; | |
5008d581 LP |
769 | } |
770 | ||
771 | static int scandir_filter(const struct dirent *d) { | |
772 | assert(d); | |
773 | ||
774 | if (ignore_file(d->d_name)) | |
775 | return 0; | |
776 | ||
777 | if (d->d_type != DT_REG && | |
1a6f4df6 LP |
778 | d->d_type != DT_LNK && |
779 | d->d_type != DT_UNKNOWN) | |
5008d581 LP |
780 | return 0; |
781 | ||
782 | return endswith(d->d_name, ".conf"); | |
783 | } | |
784 | ||
3b63d2d3 LP |
785 | static int help(void) { |
786 | ||
522d4a49 LP |
787 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
788 | "Creates, deletes and cleans up volatile and temporary files and directories.\n\n" | |
3b63d2d3 LP |
789 | " -h --help Show this help\n" |
790 | " --create Create marked files/directories\n" | |
791 | " --clean Clean up marked directories\n" | |
fba6e687 | 792 | " --remove Remove marked files/directories\n" |
522d4a49 | 793 | " --prefix=PATH Only apply rules that apply to paths with the specified prefix\n", |
3b63d2d3 LP |
794 | program_invocation_short_name); |
795 | ||
796 | return 0; | |
797 | } | |
798 | ||
799 | static int parse_argv(int argc, char *argv[]) { | |
800 | ||
801 | enum { | |
802 | ARG_CREATE, | |
803 | ARG_CLEAN, | |
fba6e687 LP |
804 | ARG_REMOVE, |
805 | ARG_PREFIX | |
3b63d2d3 LP |
806 | }; |
807 | ||
808 | static const struct option options[] = { | |
809 | { "help", no_argument, NULL, 'h' }, | |
810 | { "create", no_argument, NULL, ARG_CREATE }, | |
811 | { "clean", no_argument, NULL, ARG_CLEAN }, | |
812 | { "remove", no_argument, NULL, ARG_REMOVE }, | |
fba6e687 | 813 | { "prefix", required_argument, NULL, ARG_PREFIX }, |
3b63d2d3 LP |
814 | { NULL, 0, NULL, 0 } |
815 | }; | |
816 | ||
817 | int c; | |
818 | ||
819 | assert(argc >= 0); | |
820 | assert(argv); | |
821 | ||
822 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) { | |
823 | ||
824 | switch (c) { | |
825 | ||
826 | case 'h': | |
827 | help(); | |
828 | return 0; | |
829 | ||
830 | case ARG_CREATE: | |
831 | arg_create = true; | |
832 | break; | |
833 | ||
834 | case ARG_CLEAN: | |
835 | arg_clean = true; | |
836 | break; | |
837 | ||
838 | case ARG_REMOVE: | |
839 | arg_remove = true; | |
840 | break; | |
841 | ||
fba6e687 LP |
842 | case ARG_PREFIX: |
843 | arg_prefix = optarg; | |
844 | break; | |
845 | ||
3b63d2d3 LP |
846 | case '?': |
847 | return -EINVAL; | |
848 | ||
849 | default: | |
850 | log_error("Unknown option code %c", c); | |
851 | return -EINVAL; | |
852 | } | |
853 | } | |
854 | ||
855 | if (!arg_clean && !arg_create && !arg_remove) { | |
35b8ca3a | 856 | log_error("You need to specify at least one of --clean, --create or --remove."); |
3b63d2d3 LP |
857 | return -EINVAL; |
858 | } | |
859 | ||
860 | return 1; | |
861 | } | |
862 | ||
fba6e687 LP |
863 | static int read_config_file(const char *fn, bool ignore_enoent) { |
864 | FILE *f; | |
865 | unsigned v = 0; | |
866 | int r = 0; | |
867 | ||
868 | assert(fn); | |
869 | ||
870 | if (!(f = fopen(fn, "re"))) { | |
871 | ||
872 | if (ignore_enoent && errno == ENOENT) | |
873 | return 0; | |
874 | ||
875 | log_error("Failed to open %s: %m", fn); | |
876 | return -errno; | |
877 | } | |
878 | ||
879 | for (;;) { | |
880 | char line[LINE_MAX], *l; | |
881 | int k; | |
882 | ||
883 | if (!(fgets(line, sizeof(line), f))) | |
884 | break; | |
885 | ||
886 | v++; | |
887 | ||
888 | l = strstrip(line); | |
889 | if (*l == '#' || *l == 0) | |
890 | continue; | |
891 | ||
892 | if ((k = parse_line(fn, v, l)) < 0) | |
893 | if (r == 0) | |
894 | r = k; | |
895 | } | |
896 | ||
897 | if (ferror(f)) { | |
898 | log_error("Failed to read from file %s: %m", fn); | |
899 | if (r == 0) | |
900 | r = -EIO; | |
901 | } | |
902 | ||
903 | fclose(f); | |
904 | ||
905 | return r; | |
906 | } | |
907 | ||
5008d581 | 908 | int main(int argc, char *argv[]) { |
fba6e687 | 909 | int r; |
3b63d2d3 LP |
910 | Item *i; |
911 | Iterator iterator; | |
912 | ||
913 | if ((r = parse_argv(argc, argv)) <= 0) | |
914 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
5008d581 | 915 | |
eb0ca9eb | 916 | log_set_target(LOG_TARGET_AUTO); |
5008d581 LP |
917 | log_parse_environment(); |
918 | log_open(); | |
919 | ||
920 | label_init(); | |
921 | ||
b8bb3e8f LP |
922 | items = hashmap_new(string_hash_func, string_compare_func); |
923 | globs = hashmap_new(string_hash_func, string_compare_func); | |
924 | ||
925 | if (!items || !globs) { | |
3b63d2d3 LP |
926 | log_error("Out of memory"); |
927 | r = EXIT_FAILURE; | |
928 | goto finish; | |
929 | } | |
930 | ||
5008d581 LP |
931 | r = EXIT_SUCCESS; |
932 | ||
fba6e687 LP |
933 | if (optind < argc) { |
934 | int j; | |
5008d581 | 935 | |
fba6e687 LP |
936 | for (j = optind; j < argc; j++) |
937 | if (read_config_file(argv[j], false) < 0) | |
938 | r = EXIT_FAILURE; | |
5008d581 | 939 | |
fba6e687 LP |
940 | } else { |
941 | int n, j; | |
942 | struct dirent **de = NULL; | |
5008d581 | 943 | |
fba6e687 | 944 | if ((n = scandir("/etc/tmpfiles.d/", &de, scandir_filter, alphasort)) < 0) { |
3b63d2d3 LP |
945 | |
946 | if (errno != ENOENT) { | |
fba6e687 | 947 | log_error("Failed to enumerate /etc/tmpfiles.d/ files: %m"); |
3b63d2d3 LP |
948 | r = EXIT_FAILURE; |
949 | } | |
950 | ||
fba6e687 | 951 | goto finish; |
5008d581 LP |
952 | } |
953 | ||
fba6e687 LP |
954 | for (j = 0; j < n; j++) { |
955 | int k; | |
956 | char *fn; | |
5008d581 | 957 | |
fba6e687 LP |
958 | k = asprintf(&fn, "/etc/tmpfiles.d/%s", de[j]->d_name); |
959 | free(de[j]); | |
5008d581 | 960 | |
fba6e687 LP |
961 | if (k < 0) { |
962 | log_error("Failed to allocate file name."); | |
963 | r = EXIT_FAILURE; | |
5008d581 | 964 | continue; |
fba6e687 | 965 | } |
5008d581 | 966 | |
fba6e687 | 967 | if (read_config_file(fn, true) < 0) |
4aa8b15b | 968 | r = EXIT_FAILURE; |
5008d581 | 969 | |
fba6e687 | 970 | free(fn); |
5008d581 LP |
971 | } |
972 | ||
fba6e687 | 973 | free(de); |
5008d581 LP |
974 | } |
975 | ||
b8bb3e8f LP |
976 | HASHMAP_FOREACH(i, globs, iterator) |
977 | if (process_item(i) < 0) | |
978 | r = EXIT_FAILURE; | |
979 | ||
3b63d2d3 LP |
980 | HASHMAP_FOREACH(i, items, iterator) |
981 | if (process_item(i) < 0) | |
982 | r = EXIT_FAILURE; | |
983 | ||
5008d581 | 984 | finish: |
3b63d2d3 LP |
985 | while ((i = hashmap_steal_first(items))) |
986 | item_free(i); | |
987 | ||
17b90525 LP |
988 | while ((i = hashmap_steal_first(globs))) |
989 | item_free(i); | |
990 | ||
3b63d2d3 | 991 | hashmap_free(items); |
b8bb3e8f | 992 | hashmap_free(globs); |
5008d581 | 993 | |
17b90525 LP |
994 | set_free_free(unix_sockets); |
995 | ||
29003cff LP |
996 | label_finish(); |
997 | ||
5008d581 LP |
998 | return r; |
999 | } |