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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 |
bb29785e | 50 | * properly owned directories beneath /tmp, /var/tmp, /run and |
5008d581 LP |
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 | ||
4ff21d85 LP |
150 | path_kill_slashes(s); |
151 | ||
17b90525 LP |
152 | if ((k = set_put(unix_sockets, s)) < 0) { |
153 | free(s); | |
154 | ||
155 | if (k != -EEXIST) | |
156 | goto fail; | |
157 | } | |
158 | } | |
159 | ||
160 | return; | |
161 | ||
162 | fail: | |
163 | set_free_free(unix_sockets); | |
164 | unix_sockets = NULL; | |
165 | ||
166 | if (f) | |
167 | fclose(f); | |
168 | } | |
169 | ||
170 | static bool unix_socket_alive(const char *fn) { | |
171 | assert(fn); | |
172 | ||
173 | load_unix_sockets(); | |
174 | ||
175 | if (unix_sockets) | |
176 | return !!set_get(unix_sockets, (char*) fn); | |
177 | ||
178 | /* We don't know, so assume yes */ | |
179 | return true; | |
180 | } | |
181 | ||
3b63d2d3 LP |
182 | static int dir_cleanup( |
183 | const char *p, | |
184 | DIR *d, | |
185 | const struct stat *ds, | |
186 | usec_t cutoff, | |
187 | dev_t rootdev, | |
188 | bool mountpoint, | |
189 | int maxdepth) | |
190 | { | |
191 | struct dirent *dent; | |
192 | struct timespec times[2]; | |
193 | bool deleted = false; | |
194 | char *sub_path = NULL; | |
195 | int r = 0; | |
196 | ||
197 | while ((dent = readdir(d))) { | |
198 | struct stat s; | |
199 | usec_t age; | |
200 | ||
201 | if (streq(dent->d_name, ".") || | |
202 | streq(dent->d_name, "..")) | |
203 | continue; | |
5008d581 | 204 | |
3b63d2d3 | 205 | if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) { |
5008d581 | 206 | |
3b63d2d3 LP |
207 | if (errno != ENOENT) { |
208 | log_error("stat(%s/%s) failed: %m", p, dent->d_name); | |
209 | r = -errno; | |
210 | } | |
211 | ||
212 | continue; | |
213 | } | |
214 | ||
215 | /* Stay on the same filesystem */ | |
216 | if (s.st_dev != rootdev) | |
217 | continue; | |
218 | ||
219 | /* Do not delete read-only files owned by root */ | |
220 | if (s.st_uid == 0 && !(s.st_mode & S_IWUSR)) | |
221 | continue; | |
222 | ||
223 | free(sub_path); | |
224 | sub_path = NULL; | |
225 | ||
226 | if (asprintf(&sub_path, "%s/%s", p, dent->d_name) < 0) { | |
227 | log_error("Out of memory"); | |
228 | r = -ENOMEM; | |
229 | goto finish; | |
230 | } | |
231 | ||
232 | /* Is there an item configured for this path? */ | |
233 | if (hashmap_get(items, sub_path)) | |
234 | continue; | |
235 | ||
b8bb3e8f LP |
236 | if (find_glob(globs, sub_path)) |
237 | continue; | |
238 | ||
3b63d2d3 LP |
239 | if (S_ISDIR(s.st_mode)) { |
240 | ||
241 | if (mountpoint && | |
242 | streq(dent->d_name, "lost+found") && | |
243 | s.st_uid == 0) | |
244 | continue; | |
245 | ||
246 | if (maxdepth <= 0) | |
247 | log_warning("Reached max depth on %s.", sub_path); | |
248 | else { | |
249 | DIR *sub_dir; | |
250 | int q; | |
251 | ||
a247755d | 252 | sub_dir = xopendirat(dirfd(d), dent->d_name, O_NOFOLLOW); |
3b63d2d3 LP |
253 | if (sub_dir == NULL) { |
254 | if (errno != ENOENT) { | |
255 | log_error("opendir(%s/%s) failed: %m", p, dent->d_name); | |
256 | r = -errno; | |
257 | } | |
258 | ||
259 | continue; | |
260 | } | |
261 | ||
262 | q = dir_cleanup(sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1); | |
263 | closedir(sub_dir); | |
264 | ||
265 | if (q < 0) | |
266 | r = q; | |
267 | } | |
268 | ||
269 | /* Ignore ctime, we change it when deleting */ | |
270 | age = MAX(timespec_load(&s.st_mtim), | |
271 | timespec_load(&s.st_atim)); | |
272 | if (age >= cutoff) | |
273 | continue; | |
274 | ||
275 | log_debug("rmdir '%s'\n", sub_path); | |
276 | ||
277 | if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) { | |
278 | if (errno != ENOENT && errno != ENOTEMPTY) { | |
279 | log_error("rmdir(%s): %m", sub_path); | |
280 | r = -errno; | |
281 | } | |
282 | } | |
283 | ||
284 | } else { | |
9c73736d LP |
285 | /* Skip files for which the sticky bit is |
286 | * set. These are semantics we define, and are | |
287 | * unknown elsewhere. See XDG_RUNTIME_DIR | |
288 | * specification for details. */ | |
289 | if (s.st_mode & S_ISVTX) | |
290 | continue; | |
291 | ||
17b90525 | 292 | if (mountpoint && S_ISREG(s.st_mode)) { |
3b63d2d3 LP |
293 | if (streq(dent->d_name, ".journal") && |
294 | s.st_uid == 0) | |
295 | continue; | |
296 | ||
297 | if (streq(dent->d_name, "aquota.user") || | |
298 | streq(dent->d_name, "aquota.group")) | |
299 | continue; | |
300 | } | |
301 | ||
17b90525 LP |
302 | /* Ignore sockets that are listed in /proc/net/unix */ |
303 | if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path)) | |
304 | continue; | |
305 | ||
78ab08eb LP |
306 | /* Ignore device nodes */ |
307 | if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) | |
308 | continue; | |
309 | ||
3b63d2d3 LP |
310 | age = MAX3(timespec_load(&s.st_mtim), |
311 | timespec_load(&s.st_atim), | |
312 | timespec_load(&s.st_ctim)); | |
313 | ||
314 | if (age >= cutoff) | |
315 | continue; | |
316 | ||
317 | log_debug("unlink '%s'\n", sub_path); | |
318 | ||
319 | if (unlinkat(dirfd(d), dent->d_name, 0) < 0) { | |
320 | if (errno != ENOENT) { | |
321 | log_error("unlink(%s): %m", sub_path); | |
322 | r = -errno; | |
323 | } | |
324 | } | |
325 | ||
326 | deleted = true; | |
327 | } | |
328 | } | |
329 | ||
330 | finish: | |
331 | if (deleted) { | |
332 | /* Restore original directory timestamps */ | |
333 | times[0] = ds->st_atim; | |
334 | times[1] = ds->st_mtim; | |
335 | ||
336 | if (futimens(dirfd(d), times) < 0) | |
337 | log_error("utimensat(%s): %m", p); | |
338 | } | |
339 | ||
340 | free(sub_path); | |
341 | ||
342 | return r; | |
343 | } | |
344 | ||
345 | static int clean_item(Item *i) { | |
346 | DIR *d; | |
347 | struct stat s, ps; | |
348 | bool mountpoint; | |
349 | int r; | |
350 | usec_t cutoff, n; | |
351 | ||
352 | assert(i); | |
353 | ||
354 | if (i->type != CREATE_DIRECTORY && | |
355 | i->type != TRUNCATE_DIRECTORY && | |
356 | i->type != IGNORE_PATH) | |
357 | return 0; | |
358 | ||
359 | if (!i->age_set || i->age <= 0) | |
360 | return 0; | |
361 | ||
362 | n = now(CLOCK_REALTIME); | |
363 | if (n < i->age) | |
364 | return 0; | |
365 | ||
366 | cutoff = n - i->age; | |
367 | ||
368 | d = opendir(i->path); | |
369 | if (!d) { | |
370 | if (errno == ENOENT) | |
371 | return 0; | |
372 | ||
373 | log_error("Failed to open directory %s: %m", i->path); | |
374 | return -errno; | |
375 | } | |
376 | ||
377 | if (fstat(dirfd(d), &s) < 0) { | |
378 | log_error("stat(%s) failed: %m", i->path); | |
379 | r = -errno; | |
5008d581 LP |
380 | goto finish; |
381 | } | |
382 | ||
3b63d2d3 LP |
383 | if (!S_ISDIR(s.st_mode)) { |
384 | log_error("%s is not a directory.", i->path); | |
385 | r = -ENOTDIR; | |
5008d581 LP |
386 | goto finish; |
387 | } | |
388 | ||
3b63d2d3 LP |
389 | if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) { |
390 | log_error("stat(%s/..) failed: %m", i->path); | |
391 | r = -errno; | |
5008d581 | 392 | goto finish; |
4aa8b15b | 393 | } |
5008d581 | 394 | |
3b63d2d3 LP |
395 | mountpoint = s.st_dev != ps.st_dev || |
396 | (s.st_dev == ps.st_dev && s.st_ino == ps.st_ino); | |
5008d581 | 397 | |
3b63d2d3 | 398 | r = dir_cleanup(i->path, d, &s, cutoff, s.st_dev, mountpoint, MAX_DEPTH); |
5008d581 | 399 | |
3b63d2d3 LP |
400 | finish: |
401 | if (d) | |
402 | closedir(d); | |
5008d581 | 403 | |
3b63d2d3 LP |
404 | return r; |
405 | } | |
5008d581 | 406 | |
3b63d2d3 LP |
407 | static int create_item(Item *i) { |
408 | int fd = -1, r; | |
409 | mode_t u; | |
410 | struct stat st; | |
5008d581 | 411 | |
3b63d2d3 | 412 | assert(i); |
5008d581 | 413 | |
3b63d2d3 LP |
414 | switch (i->type) { |
415 | ||
416 | case IGNORE_PATH: | |
417 | case REMOVE_PATH: | |
418 | case RECURSIVE_REMOVE_PATH: | |
419 | return 0; | |
5008d581 | 420 | |
3b63d2d3 LP |
421 | case CREATE_FILE: |
422 | case TRUNCATE_FILE: | |
5008d581 LP |
423 | |
424 | u = umask(0); | |
3b63d2d3 LP |
425 | fd = open(i->path, O_CREAT|O_NDELAY|O_CLOEXEC|O_WRONLY|O_NOCTTY|O_NOFOLLOW| |
426 | (i->type == TRUNCATE_FILE ? O_TRUNC : 0), i->mode); | |
5008d581 LP |
427 | umask(u); |
428 | ||
429 | if (fd < 0) { | |
3b63d2d3 | 430 | log_error("Failed to create file %s: %m", i->path); |
4aa8b15b | 431 | r = -errno; |
5008d581 LP |
432 | goto finish; |
433 | } | |
434 | ||
435 | if (fstat(fd, &st) < 0) { | |
3b63d2d3 | 436 | log_error("stat(%s) failed: %m", i->path); |
4aa8b15b | 437 | r = -errno; |
5008d581 LP |
438 | goto finish; |
439 | } | |
440 | ||
441 | if (!S_ISREG(st.st_mode)) { | |
3b63d2d3 | 442 | log_error("%s is not a file.", i->path); |
4aa8b15b | 443 | r = -EEXIST; |
5008d581 LP |
444 | goto finish; |
445 | } | |
446 | ||
3b63d2d3 LP |
447 | if (i->mode_set) |
448 | if (fchmod(fd, i->mode) < 0) { | |
449 | log_error("chmod(%s) failed: %m", i->path); | |
450 | r = -errno; | |
451 | goto finish; | |
452 | } | |
5008d581 | 453 | |
3b63d2d3 | 454 | if (i->uid_set || i->gid_set) |
5008d581 | 455 | if (fchown(fd, |
3b63d2d3 LP |
456 | i->uid_set ? i->uid : (uid_t) -1, |
457 | i->gid_set ? i->gid : (gid_t) -1) < 0) { | |
458 | log_error("chown(%s) failed: %m", i->path); | |
4aa8b15b | 459 | r = -errno; |
5008d581 LP |
460 | goto finish; |
461 | } | |
5008d581 | 462 | |
3b63d2d3 LP |
463 | break; |
464 | ||
465 | case TRUNCATE_DIRECTORY: | |
466 | case CREATE_DIRECTORY: | |
5008d581 LP |
467 | |
468 | u = umask(0); | |
33366862 | 469 | mkdir_parents(i->path, 0755); |
3b63d2d3 | 470 | r = mkdir(i->path, i->mode); |
5008d581 LP |
471 | umask(u); |
472 | ||
473 | if (r < 0 && errno != EEXIST) { | |
3b63d2d3 | 474 | log_error("Failed to create directory %s: %m", i->path); |
4aa8b15b | 475 | r = -errno; |
5008d581 LP |
476 | goto finish; |
477 | } | |
478 | ||
3b63d2d3 LP |
479 | if (stat(i->path, &st) < 0) { |
480 | log_error("stat(%s) failed: %m", i->path); | |
4aa8b15b | 481 | r = -errno; |
5008d581 LP |
482 | goto finish; |
483 | } | |
484 | ||
485 | if (!S_ISDIR(st.st_mode)) { | |
3b63d2d3 | 486 | log_error("%s is not a directory.", i->path); |
4aa8b15b | 487 | r = -EEXIST; |
5008d581 LP |
488 | goto finish; |
489 | } | |
490 | ||
3b63d2d3 LP |
491 | if (i->mode_set) |
492 | if (chmod(i->path, i->mode) < 0) { | |
493 | log_error("chmod(%s) failed: %m", i->path); | |
494 | r = -errno; | |
495 | goto finish; | |
496 | } | |
5008d581 | 497 | |
3b63d2d3 LP |
498 | if (i->uid_set || i->gid_set) |
499 | if (chown(i->path, | |
500 | i->uid_set ? i->uid : (uid_t) -1, | |
501 | i->gid_set ? i->gid : (gid_t) -1) < 0) { | |
5008d581 | 502 | |
3b63d2d3 | 503 | log_error("chown(%s) failed: %m", i->path); |
4aa8b15b | 504 | r = -errno; |
5008d581 LP |
505 | goto finish; |
506 | } | |
3b63d2d3 LP |
507 | |
508 | break; | |
509 | } | |
510 | ||
c904f64d | 511 | if ((r = label_fix(i->path, false)) < 0) |
3b63d2d3 LP |
512 | goto finish; |
513 | ||
514 | log_debug("%s created successfully.", i->path); | |
515 | ||
516 | finish: | |
517 | if (fd >= 0) | |
518 | close_nointr_nofail(fd); | |
519 | ||
520 | return r; | |
521 | } | |
522 | ||
b8bb3e8f | 523 | static int remove_item(Item *i, const char *instance) { |
3b63d2d3 LP |
524 | int r; |
525 | ||
526 | assert(i); | |
527 | ||
528 | switch (i->type) { | |
529 | ||
530 | case CREATE_FILE: | |
531 | case TRUNCATE_FILE: | |
532 | case CREATE_DIRECTORY: | |
533 | case IGNORE_PATH: | |
534 | break; | |
535 | ||
536 | case REMOVE_PATH: | |
b8bb3e8f LP |
537 | if (remove(instance) < 0 && errno != ENOENT) { |
538 | log_error("remove(%s): %m", instance); | |
3b63d2d3 | 539 | return -errno; |
5008d581 | 540 | } |
3b63d2d3 LP |
541 | |
542 | break; | |
543 | ||
544 | case TRUNCATE_DIRECTORY: | |
545 | case RECURSIVE_REMOVE_PATH: | |
b8bb3e8f | 546 | if ((r = rm_rf(instance, false, i->type == RECURSIVE_REMOVE_PATH)) < 0 && |
3b63d2d3 | 547 | r != -ENOENT) { |
b8bb3e8f | 548 | log_error("rm_rf(%s): %s", instance, strerror(-r)); |
3b63d2d3 LP |
549 | return r; |
550 | } | |
551 | ||
552 | break; | |
553 | } | |
554 | ||
555 | return 0; | |
556 | } | |
557 | ||
b8bb3e8f LP |
558 | static int remove_item_glob(Item *i) { |
559 | assert(i); | |
560 | ||
561 | switch (i->type) { | |
562 | ||
563 | case CREATE_FILE: | |
564 | case TRUNCATE_FILE: | |
565 | case CREATE_DIRECTORY: | |
566 | case IGNORE_PATH: | |
567 | break; | |
568 | ||
569 | case REMOVE_PATH: | |
570 | case TRUNCATE_DIRECTORY: | |
571 | case RECURSIVE_REMOVE_PATH: { | |
572 | int r = 0, k; | |
573 | glob_t g; | |
574 | char **fn; | |
575 | ||
576 | zero(g); | |
577 | ||
578 | errno = 0; | |
579 | if ((k = glob(i->path, GLOB_NOSORT|GLOB_BRACE, NULL, &g)) != 0) { | |
580 | ||
581 | if (k != GLOB_NOMATCH) { | |
582 | if (errno != 0) | |
583 | errno = EIO; | |
584 | ||
585 | log_error("glob(%s) failed: %m", i->path); | |
586 | return -errno; | |
587 | } | |
588 | } | |
589 | ||
590 | STRV_FOREACH(fn, g.gl_pathv) | |
591 | if ((k = remove_item(i, *fn)) < 0) | |
592 | r = k; | |
593 | ||
594 | globfree(&g); | |
595 | return r; | |
596 | } | |
597 | } | |
598 | ||
599 | return 0; | |
600 | } | |
601 | ||
3b63d2d3 LP |
602 | static int process_item(Item *i) { |
603 | int r, q, p; | |
604 | ||
605 | assert(i); | |
606 | ||
607 | r = arg_create ? create_item(i) : 0; | |
b8bb3e8f | 608 | q = arg_remove ? remove_item_glob(i) : 0; |
3b63d2d3 LP |
609 | p = arg_clean ? clean_item(i) : 0; |
610 | ||
611 | if (r < 0) | |
612 | return r; | |
613 | ||
614 | if (q < 0) | |
615 | return q; | |
616 | ||
617 | return p; | |
618 | } | |
619 | ||
620 | static void item_free(Item *i) { | |
621 | assert(i); | |
622 | ||
623 | free(i->path); | |
624 | free(i); | |
625 | } | |
626 | ||
fba6e687 | 627 | static int parse_line(const char *fname, unsigned line, const char *buffer) { |
3b63d2d3 LP |
628 | Item *i; |
629 | char *mode = NULL, *user = NULL, *group = NULL, *age = NULL; | |
bd40a2d8 | 630 | int r; |
3b63d2d3 LP |
631 | |
632 | assert(fname); | |
633 | assert(line >= 1); | |
634 | assert(buffer); | |
635 | ||
636 | if (!(i = new0(Item, 1))) { | |
637 | log_error("Out of memory"); | |
638 | return -ENOMEM; | |
639 | } | |
640 | ||
bd40a2d8 LP |
641 | if (sscanf(buffer, |
642 | "%c " | |
643 | "%ms " | |
644 | "%ms " | |
645 | "%ms " | |
646 | "%ms " | |
647 | "%ms", | |
648 | &i->type, | |
649 | &i->path, | |
650 | &mode, | |
651 | &user, | |
652 | &group, | |
653 | &age) < 2) { | |
3b63d2d3 LP |
654 | log_error("[%s:%u] Syntax error.", fname, line); |
655 | r = -EIO; | |
656 | goto finish; | |
5008d581 LP |
657 | } |
658 | ||
3b63d2d3 | 659 | if (i->type != CREATE_FILE && |
3b63d2d3 | 660 | i->type != TRUNCATE_FILE && |
abe35cc2 GSB |
661 | i->type != CREATE_DIRECTORY && |
662 | i->type != TRUNCATE_DIRECTORY && | |
3b63d2d3 LP |
663 | i->type != IGNORE_PATH && |
664 | i->type != REMOVE_PATH && | |
665 | i->type != RECURSIVE_REMOVE_PATH) { | |
666 | log_error("[%s:%u] Unknown file type '%c'.", fname, line, i->type); | |
667 | r = -EBADMSG; | |
4aa8b15b | 668 | goto finish; |
3b63d2d3 LP |
669 | } |
670 | ||
671 | if (!path_is_absolute(i->path)) { | |
672 | log_error("[%s:%u] Path '%s' not absolute.", fname, line, i->path); | |
673 | r = -EBADMSG; | |
674 | goto finish; | |
675 | } | |
676 | ||
677 | path_kill_slashes(i->path); | |
678 | ||
fba6e687 | 679 | if (arg_prefix && !path_startswith(i->path, arg_prefix)) { |
3b63d2d3 LP |
680 | r = 0; |
681 | goto finish; | |
682 | } | |
5008d581 | 683 | |
3b63d2d3 LP |
684 | if (user && !streq(user, "-")) { |
685 | unsigned long lu; | |
686 | struct passwd *p; | |
687 | ||
688 | if (streq(user, "root") || streq(user, "0")) | |
689 | i->uid = 0; | |
690 | else if (safe_atolu(user, &lu) >= 0) | |
691 | i->uid = (uid_t) lu; | |
692 | else if ((p = getpwnam(user))) | |
693 | i->uid = p->pw_uid; | |
694 | else { | |
695 | log_error("[%s:%u] Unknown user '%s'.", fname, line, user); | |
696 | r = -ENOENT; | |
697 | goto finish; | |
698 | } | |
699 | ||
700 | i->uid_set = true; | |
701 | } | |
702 | ||
703 | if (group && !streq(group, "-")) { | |
704 | unsigned long lu; | |
705 | struct group *g; | |
706 | ||
707 | if (streq(group, "root") || streq(group, "0")) | |
708 | i->gid = 0; | |
709 | else if (safe_atolu(group, &lu) >= 0) | |
710 | i->gid = (gid_t) lu; | |
711 | else if ((g = getgrnam(group))) | |
712 | i->gid = g->gr_gid; | |
713 | else { | |
714 | log_error("[%s:%u] Unknown group '%s'.", fname, line, group); | |
715 | r = -ENOENT; | |
716 | goto finish; | |
717 | } | |
718 | ||
719 | i->gid_set = true; | |
720 | } | |
721 | ||
722 | if (mode && !streq(mode, "-")) { | |
723 | unsigned m; | |
724 | ||
725 | if (sscanf(mode, "%o", &m) != 1) { | |
726 | log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode); | |
727 | r = -ENOENT; | |
728 | goto finish; | |
729 | } | |
730 | ||
731 | i->mode = m; | |
732 | i->mode_set = true; | |
733 | } else | |
734 | i->mode = i->type == CREATE_DIRECTORY ? 0755 : 0644; | |
735 | ||
736 | if (age && !streq(age, "-")) { | |
737 | if (parse_usec(age, &i->age) < 0) { | |
738 | log_error("[%s:%u] Invalid age '%s'.", fname, line, age); | |
739 | r = -EBADMSG; | |
740 | goto finish; | |
741 | } | |
742 | ||
743 | i->age_set = true; | |
744 | } | |
745 | ||
b8bb3e8f | 746 | if ((r = hashmap_put(needs_glob(i->type) ? globs : items, i->path, i)) < 0) { |
022707d9 LP |
747 | if (r == -EEXIST) { |
748 | log_warning("Two or more conflicting lines for %s configured, ignoring.", i->path); | |
749 | r = 0; | |
750 | goto finish; | |
751 | } | |
752 | ||
3b63d2d3 LP |
753 | log_error("Failed to insert item %s: %s", i->path, strerror(-r)); |
754 | goto finish; | |
755 | } | |
756 | ||
757 | i = NULL; | |
4aa8b15b | 758 | r = 0; |
5008d581 LP |
759 | |
760 | finish: | |
5008d581 LP |
761 | free(user); |
762 | free(group); | |
3b63d2d3 LP |
763 | free(mode); |
764 | free(age); | |
5008d581 | 765 | |
3b63d2d3 LP |
766 | if (i) |
767 | item_free(i); | |
4aa8b15b LP |
768 | |
769 | return r; | |
5008d581 LP |
770 | } |
771 | ||
772 | static int scandir_filter(const struct dirent *d) { | |
773 | assert(d); | |
774 | ||
775 | if (ignore_file(d->d_name)) | |
776 | return 0; | |
777 | ||
778 | if (d->d_type != DT_REG && | |
1a6f4df6 LP |
779 | d->d_type != DT_LNK && |
780 | d->d_type != DT_UNKNOWN) | |
5008d581 LP |
781 | return 0; |
782 | ||
783 | return endswith(d->d_name, ".conf"); | |
784 | } | |
785 | ||
3b63d2d3 LP |
786 | static int help(void) { |
787 | ||
522d4a49 LP |
788 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
789 | "Creates, deletes and cleans up volatile and temporary files and directories.\n\n" | |
3b63d2d3 LP |
790 | " -h --help Show this help\n" |
791 | " --create Create marked files/directories\n" | |
792 | " --clean Clean up marked directories\n" | |
fba6e687 | 793 | " --remove Remove marked files/directories\n" |
522d4a49 | 794 | " --prefix=PATH Only apply rules that apply to paths with the specified prefix\n", |
3b63d2d3 LP |
795 | program_invocation_short_name); |
796 | ||
797 | return 0; | |
798 | } | |
799 | ||
800 | static int parse_argv(int argc, char *argv[]) { | |
801 | ||
802 | enum { | |
803 | ARG_CREATE, | |
804 | ARG_CLEAN, | |
fba6e687 LP |
805 | ARG_REMOVE, |
806 | ARG_PREFIX | |
3b63d2d3 LP |
807 | }; |
808 | ||
809 | static const struct option options[] = { | |
810 | { "help", no_argument, NULL, 'h' }, | |
811 | { "create", no_argument, NULL, ARG_CREATE }, | |
812 | { "clean", no_argument, NULL, ARG_CLEAN }, | |
813 | { "remove", no_argument, NULL, ARG_REMOVE }, | |
fba6e687 | 814 | { "prefix", required_argument, NULL, ARG_PREFIX }, |
3b63d2d3 LP |
815 | { NULL, 0, NULL, 0 } |
816 | }; | |
817 | ||
818 | int c; | |
819 | ||
820 | assert(argc >= 0); | |
821 | assert(argv); | |
822 | ||
823 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) { | |
824 | ||
825 | switch (c) { | |
826 | ||
827 | case 'h': | |
828 | help(); | |
829 | return 0; | |
830 | ||
831 | case ARG_CREATE: | |
832 | arg_create = true; | |
833 | break; | |
834 | ||
835 | case ARG_CLEAN: | |
836 | arg_clean = true; | |
837 | break; | |
838 | ||
839 | case ARG_REMOVE: | |
840 | arg_remove = true; | |
841 | break; | |
842 | ||
fba6e687 LP |
843 | case ARG_PREFIX: |
844 | arg_prefix = optarg; | |
845 | break; | |
846 | ||
3b63d2d3 LP |
847 | case '?': |
848 | return -EINVAL; | |
849 | ||
850 | default: | |
851 | log_error("Unknown option code %c", c); | |
852 | return -EINVAL; | |
853 | } | |
854 | } | |
855 | ||
856 | if (!arg_clean && !arg_create && !arg_remove) { | |
35b8ca3a | 857 | log_error("You need to specify at least one of --clean, --create or --remove."); |
3b63d2d3 LP |
858 | return -EINVAL; |
859 | } | |
860 | ||
861 | return 1; | |
862 | } | |
863 | ||
fba6e687 LP |
864 | static int read_config_file(const char *fn, bool ignore_enoent) { |
865 | FILE *f; | |
866 | unsigned v = 0; | |
867 | int r = 0; | |
868 | ||
869 | assert(fn); | |
870 | ||
871 | if (!(f = fopen(fn, "re"))) { | |
872 | ||
873 | if (ignore_enoent && errno == ENOENT) | |
874 | return 0; | |
875 | ||
876 | log_error("Failed to open %s: %m", fn); | |
877 | return -errno; | |
878 | } | |
879 | ||
880 | for (;;) { | |
881 | char line[LINE_MAX], *l; | |
882 | int k; | |
883 | ||
884 | if (!(fgets(line, sizeof(line), f))) | |
885 | break; | |
886 | ||
887 | v++; | |
888 | ||
889 | l = strstrip(line); | |
890 | if (*l == '#' || *l == 0) | |
891 | continue; | |
892 | ||
893 | if ((k = parse_line(fn, v, l)) < 0) | |
894 | if (r == 0) | |
895 | r = k; | |
896 | } | |
897 | ||
898 | if (ferror(f)) { | |
899 | log_error("Failed to read from file %s: %m", fn); | |
900 | if (r == 0) | |
901 | r = -EIO; | |
902 | } | |
903 | ||
904 | fclose(f); | |
905 | ||
906 | return r; | |
907 | } | |
908 | ||
5008d581 | 909 | int main(int argc, char *argv[]) { |
fba6e687 | 910 | int r; |
3b63d2d3 LP |
911 | Item *i; |
912 | Iterator iterator; | |
913 | ||
914 | if ((r = parse_argv(argc, argv)) <= 0) | |
915 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
5008d581 | 916 | |
eb0ca9eb | 917 | log_set_target(LOG_TARGET_AUTO); |
5008d581 LP |
918 | log_parse_environment(); |
919 | log_open(); | |
920 | ||
921 | label_init(); | |
922 | ||
b8bb3e8f LP |
923 | items = hashmap_new(string_hash_func, string_compare_func); |
924 | globs = hashmap_new(string_hash_func, string_compare_func); | |
925 | ||
926 | if (!items || !globs) { | |
3b63d2d3 LP |
927 | log_error("Out of memory"); |
928 | r = EXIT_FAILURE; | |
929 | goto finish; | |
930 | } | |
931 | ||
5008d581 LP |
932 | r = EXIT_SUCCESS; |
933 | ||
fba6e687 LP |
934 | if (optind < argc) { |
935 | int j; | |
5008d581 | 936 | |
fba6e687 LP |
937 | for (j = optind; j < argc; j++) |
938 | if (read_config_file(argv[j], false) < 0) | |
939 | r = EXIT_FAILURE; | |
5008d581 | 940 | |
fba6e687 LP |
941 | } else { |
942 | int n, j; | |
943 | struct dirent **de = NULL; | |
5008d581 | 944 | |
fba6e687 | 945 | if ((n = scandir("/etc/tmpfiles.d/", &de, scandir_filter, alphasort)) < 0) { |
3b63d2d3 LP |
946 | |
947 | if (errno != ENOENT) { | |
fba6e687 | 948 | log_error("Failed to enumerate /etc/tmpfiles.d/ files: %m"); |
3b63d2d3 LP |
949 | r = EXIT_FAILURE; |
950 | } | |
951 | ||
fba6e687 | 952 | goto finish; |
5008d581 LP |
953 | } |
954 | ||
fba6e687 LP |
955 | for (j = 0; j < n; j++) { |
956 | int k; | |
957 | char *fn; | |
5008d581 | 958 | |
fba6e687 LP |
959 | k = asprintf(&fn, "/etc/tmpfiles.d/%s", de[j]->d_name); |
960 | free(de[j]); | |
5008d581 | 961 | |
fba6e687 LP |
962 | if (k < 0) { |
963 | log_error("Failed to allocate file name."); | |
964 | r = EXIT_FAILURE; | |
5008d581 | 965 | continue; |
fba6e687 | 966 | } |
5008d581 | 967 | |
fba6e687 | 968 | if (read_config_file(fn, true) < 0) |
4aa8b15b | 969 | r = EXIT_FAILURE; |
5008d581 | 970 | |
fba6e687 | 971 | free(fn); |
5008d581 LP |
972 | } |
973 | ||
fba6e687 | 974 | free(de); |
5008d581 LP |
975 | } |
976 | ||
b8bb3e8f LP |
977 | HASHMAP_FOREACH(i, globs, iterator) |
978 | if (process_item(i) < 0) | |
979 | r = EXIT_FAILURE; | |
980 | ||
3b63d2d3 LP |
981 | HASHMAP_FOREACH(i, items, iterator) |
982 | if (process_item(i) < 0) | |
983 | r = EXIT_FAILURE; | |
984 | ||
5008d581 | 985 | finish: |
3b63d2d3 LP |
986 | while ((i = hashmap_steal_first(items))) |
987 | item_free(i); | |
988 | ||
17b90525 LP |
989 | while ((i = hashmap_steal_first(globs))) |
990 | item_free(i); | |
991 | ||
3b63d2d3 | 992 | hashmap_free(items); |
b8bb3e8f | 993 | hashmap_free(globs); |
5008d581 | 994 | |
17b90525 LP |
995 | set_free_free(unix_sockets); |
996 | ||
29003cff LP |
997 | label_finish(); |
998 | ||
5008d581 LP |
999 | return r; |
1000 | } |