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