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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 | |
66ccd038 | 53 | typedef enum ItemType { |
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', | |
ee17ee7c | 59 | CREATE_FIFO = 'p', |
b8bb3e8f LP |
60 | |
61 | /* These ones take globs */ | |
3b63d2d3 LP |
62 | IGNORE_PATH = 'x', |
63 | REMOVE_PATH = 'r', | |
a8d88783 | 64 | RECURSIVE_REMOVE_PATH = 'R', |
777b87e7 | 65 | RELABEL_PATH = 'z', |
a8d88783 | 66 | RECURSIVE_RELABEL_PATH = 'Z' |
66ccd038 | 67 | } ItemType; |
3b63d2d3 LP |
68 | |
69 | typedef struct Item { | |
66ccd038 | 70 | ItemType type; |
3b63d2d3 LP |
71 | |
72 | char *path; | |
5008d581 LP |
73 | uid_t uid; |
74 | gid_t gid; | |
3b63d2d3 LP |
75 | mode_t mode; |
76 | usec_t age; | |
77 | ||
78 | bool uid_set:1; | |
79 | bool gid_set:1; | |
80 | bool mode_set:1; | |
81 | bool age_set:1; | |
82 | } Item; | |
83 | ||
b8bb3e8f | 84 | static Hashmap *items = NULL, *globs = NULL; |
17b90525 | 85 | static Set *unix_sockets = NULL; |
3b63d2d3 LP |
86 | |
87 | static bool arg_create = false; | |
88 | static bool arg_clean = false; | |
89 | static bool arg_remove = false; | |
90 | ||
fba6e687 LP |
91 | static const char *arg_prefix = NULL; |
92 | ||
3b63d2d3 LP |
93 | #define MAX_DEPTH 256 |
94 | ||
66ccd038 | 95 | static bool needs_glob(ItemType t) { |
777b87e7 | 96 | return t == IGNORE_PATH || t == REMOVE_PATH || t == RECURSIVE_REMOVE_PATH || t == RELABEL_PATH || t == RECURSIVE_RELABEL_PATH; |
b8bb3e8f LP |
97 | } |
98 | ||
99 | static struct Item* find_glob(Hashmap *h, const char *match) { | |
100 | Item *j; | |
101 | Iterator i; | |
102 | ||
103 | HASHMAP_FOREACH(j, h, i) | |
104 | if (fnmatch(j->path, match, FNM_PATHNAME|FNM_PERIOD) == 0) | |
105 | return j; | |
106 | ||
107 | return NULL; | |
108 | } | |
109 | ||
17b90525 LP |
110 | static void load_unix_sockets(void) { |
111 | FILE *f = NULL; | |
112 | char line[LINE_MAX]; | |
113 | ||
114 | if (unix_sockets) | |
115 | return; | |
116 | ||
117 | /* We maintain a cache of the sockets we found in | |
118 | * /proc/net/unix to speed things up a little. */ | |
119 | ||
fdcad0c2 LP |
120 | unix_sockets = set_new(string_hash_func, string_compare_func); |
121 | if (!unix_sockets) | |
17b90525 LP |
122 | return; |
123 | ||
fdcad0c2 LP |
124 | f = fopen("/proc/net/unix", "re"); |
125 | if (!f) | |
17b90525 LP |
126 | return; |
127 | ||
fdcad0c2 LP |
128 | /* Skip header */ |
129 | if (!fgets(line, sizeof(line), f)) | |
17b90525 LP |
130 | goto fail; |
131 | ||
132 | for (;;) { | |
133 | char *p, *s; | |
134 | int k; | |
135 | ||
fdcad0c2 | 136 | if (!fgets(line, sizeof(line), f)) |
17b90525 LP |
137 | break; |
138 | ||
139 | truncate_nl(line); | |
140 | ||
fdcad0c2 LP |
141 | p = strchr(line, ':'); |
142 | if (!p) | |
143 | continue; | |
144 | ||
145 | if (strlen(p) < 37) | |
17b90525 LP |
146 | continue; |
147 | ||
fdcad0c2 | 148 | p += 37; |
17b90525 | 149 | p += strspn(p, WHITESPACE); |
fdcad0c2 | 150 | p += strcspn(p, WHITESPACE); /* skip one more word */ |
17b90525 LP |
151 | p += strspn(p, WHITESPACE); |
152 | ||
153 | if (*p != '/') | |
154 | continue; | |
155 | ||
fdcad0c2 LP |
156 | s = strdup(p); |
157 | if (!s) | |
17b90525 LP |
158 | goto fail; |
159 | ||
4ff21d85 LP |
160 | path_kill_slashes(s); |
161 | ||
fdcad0c2 LP |
162 | k = set_put(unix_sockets, s); |
163 | if (k < 0) { | |
17b90525 LP |
164 | free(s); |
165 | ||
166 | if (k != -EEXIST) | |
167 | goto fail; | |
168 | } | |
169 | } | |
170 | ||
10d975f5 | 171 | fclose(f); |
17b90525 LP |
172 | return; |
173 | ||
174 | fail: | |
175 | set_free_free(unix_sockets); | |
176 | unix_sockets = NULL; | |
177 | ||
178 | if (f) | |
179 | fclose(f); | |
180 | } | |
181 | ||
182 | static bool unix_socket_alive(const char *fn) { | |
183 | assert(fn); | |
184 | ||
185 | load_unix_sockets(); | |
186 | ||
187 | if (unix_sockets) | |
188 | return !!set_get(unix_sockets, (char*) fn); | |
189 | ||
190 | /* We don't know, so assume yes */ | |
191 | return true; | |
192 | } | |
193 | ||
3b63d2d3 LP |
194 | static int dir_cleanup( |
195 | const char *p, | |
196 | DIR *d, | |
197 | const struct stat *ds, | |
198 | usec_t cutoff, | |
199 | dev_t rootdev, | |
200 | bool mountpoint, | |
201 | int maxdepth) | |
202 | { | |
203 | struct dirent *dent; | |
204 | struct timespec times[2]; | |
205 | bool deleted = false; | |
206 | char *sub_path = NULL; | |
207 | int r = 0; | |
208 | ||
209 | while ((dent = readdir(d))) { | |
210 | struct stat s; | |
211 | usec_t age; | |
212 | ||
213 | if (streq(dent->d_name, ".") || | |
214 | streq(dent->d_name, "..")) | |
215 | continue; | |
5008d581 | 216 | |
3b63d2d3 | 217 | if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) { |
5008d581 | 218 | |
3b63d2d3 LP |
219 | if (errno != ENOENT) { |
220 | log_error("stat(%s/%s) failed: %m", p, dent->d_name); | |
221 | r = -errno; | |
222 | } | |
223 | ||
224 | continue; | |
225 | } | |
226 | ||
227 | /* Stay on the same filesystem */ | |
228 | if (s.st_dev != rootdev) | |
229 | continue; | |
230 | ||
231 | /* Do not delete read-only files owned by root */ | |
232 | if (s.st_uid == 0 && !(s.st_mode & S_IWUSR)) | |
233 | continue; | |
234 | ||
235 | free(sub_path); | |
236 | sub_path = NULL; | |
237 | ||
238 | if (asprintf(&sub_path, "%s/%s", p, dent->d_name) < 0) { | |
239 | log_error("Out of memory"); | |
240 | r = -ENOMEM; | |
241 | goto finish; | |
242 | } | |
243 | ||
244 | /* Is there an item configured for this path? */ | |
245 | if (hashmap_get(items, sub_path)) | |
246 | continue; | |
247 | ||
b8bb3e8f LP |
248 | if (find_glob(globs, sub_path)) |
249 | continue; | |
250 | ||
3b63d2d3 LP |
251 | if (S_ISDIR(s.st_mode)) { |
252 | ||
253 | if (mountpoint && | |
254 | streq(dent->d_name, "lost+found") && | |
255 | s.st_uid == 0) | |
256 | continue; | |
257 | ||
258 | if (maxdepth <= 0) | |
259 | log_warning("Reached max depth on %s.", sub_path); | |
260 | else { | |
261 | DIR *sub_dir; | |
262 | int q; | |
263 | ||
a247755d | 264 | sub_dir = xopendirat(dirfd(d), dent->d_name, O_NOFOLLOW); |
3b63d2d3 LP |
265 | if (sub_dir == NULL) { |
266 | if (errno != ENOENT) { | |
267 | log_error("opendir(%s/%s) failed: %m", p, dent->d_name); | |
268 | r = -errno; | |
269 | } | |
270 | ||
271 | continue; | |
272 | } | |
273 | ||
274 | q = dir_cleanup(sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1); | |
275 | closedir(sub_dir); | |
276 | ||
277 | if (q < 0) | |
278 | r = q; | |
279 | } | |
280 | ||
281 | /* Ignore ctime, we change it when deleting */ | |
282 | age = MAX(timespec_load(&s.st_mtim), | |
283 | timespec_load(&s.st_atim)); | |
284 | if (age >= cutoff) | |
285 | continue; | |
286 | ||
287 | log_debug("rmdir '%s'\n", sub_path); | |
288 | ||
289 | if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) { | |
290 | if (errno != ENOENT && errno != ENOTEMPTY) { | |
291 | log_error("rmdir(%s): %m", sub_path); | |
292 | r = -errno; | |
293 | } | |
294 | } | |
295 | ||
296 | } else { | |
9c73736d LP |
297 | /* Skip files for which the sticky bit is |
298 | * set. These are semantics we define, and are | |
299 | * unknown elsewhere. See XDG_RUNTIME_DIR | |
300 | * specification for details. */ | |
301 | if (s.st_mode & S_ISVTX) | |
302 | continue; | |
303 | ||
17b90525 | 304 | if (mountpoint && S_ISREG(s.st_mode)) { |
3b63d2d3 LP |
305 | if (streq(dent->d_name, ".journal") && |
306 | s.st_uid == 0) | |
307 | continue; | |
308 | ||
309 | if (streq(dent->d_name, "aquota.user") || | |
310 | streq(dent->d_name, "aquota.group")) | |
311 | continue; | |
312 | } | |
313 | ||
17b90525 LP |
314 | /* Ignore sockets that are listed in /proc/net/unix */ |
315 | if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path)) | |
316 | continue; | |
317 | ||
78ab08eb LP |
318 | /* Ignore device nodes */ |
319 | if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) | |
320 | continue; | |
321 | ||
3b63d2d3 LP |
322 | age = MAX3(timespec_load(&s.st_mtim), |
323 | timespec_load(&s.st_atim), | |
324 | timespec_load(&s.st_ctim)); | |
325 | ||
326 | if (age >= cutoff) | |
327 | continue; | |
328 | ||
329 | log_debug("unlink '%s'\n", sub_path); | |
330 | ||
331 | if (unlinkat(dirfd(d), dent->d_name, 0) < 0) { | |
332 | if (errno != ENOENT) { | |
333 | log_error("unlink(%s): %m", sub_path); | |
334 | r = -errno; | |
335 | } | |
336 | } | |
337 | ||
338 | deleted = true; | |
339 | } | |
340 | } | |
341 | ||
342 | finish: | |
343 | if (deleted) { | |
344 | /* Restore original directory timestamps */ | |
345 | times[0] = ds->st_atim; | |
346 | times[1] = ds->st_mtim; | |
347 | ||
348 | if (futimens(dirfd(d), times) < 0) | |
349 | log_error("utimensat(%s): %m", p); | |
350 | } | |
351 | ||
352 | free(sub_path); | |
353 | ||
354 | return r; | |
355 | } | |
356 | ||
357 | static int clean_item(Item *i) { | |
358 | DIR *d; | |
359 | struct stat s, ps; | |
360 | bool mountpoint; | |
361 | int r; | |
362 | usec_t cutoff, n; | |
363 | ||
364 | assert(i); | |
365 | ||
366 | if (i->type != CREATE_DIRECTORY && | |
367 | i->type != TRUNCATE_DIRECTORY && | |
368 | i->type != IGNORE_PATH) | |
369 | return 0; | |
370 | ||
371 | if (!i->age_set || i->age <= 0) | |
372 | return 0; | |
373 | ||
374 | n = now(CLOCK_REALTIME); | |
375 | if (n < i->age) | |
376 | return 0; | |
377 | ||
378 | cutoff = n - i->age; | |
379 | ||
380 | d = opendir(i->path); | |
381 | if (!d) { | |
382 | if (errno == ENOENT) | |
383 | return 0; | |
384 | ||
385 | log_error("Failed to open directory %s: %m", i->path); | |
386 | return -errno; | |
387 | } | |
388 | ||
389 | if (fstat(dirfd(d), &s) < 0) { | |
390 | log_error("stat(%s) failed: %m", i->path); | |
391 | r = -errno; | |
5008d581 LP |
392 | goto finish; |
393 | } | |
394 | ||
3b63d2d3 LP |
395 | if (!S_ISDIR(s.st_mode)) { |
396 | log_error("%s is not a directory.", i->path); | |
397 | r = -ENOTDIR; | |
5008d581 LP |
398 | goto finish; |
399 | } | |
400 | ||
3b63d2d3 LP |
401 | if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) { |
402 | log_error("stat(%s/..) failed: %m", i->path); | |
403 | r = -errno; | |
5008d581 | 404 | goto finish; |
4aa8b15b | 405 | } |
5008d581 | 406 | |
3b63d2d3 LP |
407 | mountpoint = s.st_dev != ps.st_dev || |
408 | (s.st_dev == ps.st_dev && s.st_ino == ps.st_ino); | |
5008d581 | 409 | |
3b63d2d3 | 410 | r = dir_cleanup(i->path, d, &s, cutoff, s.st_dev, mountpoint, MAX_DEPTH); |
5008d581 | 411 | |
3b63d2d3 LP |
412 | finish: |
413 | if (d) | |
414 | closedir(d); | |
5008d581 | 415 | |
3b63d2d3 LP |
416 | return r; |
417 | } | |
5008d581 | 418 | |
062e01bb MS |
419 | static int item_set_perms(Item *i, const char *path) { |
420 | /* not using i->path directly because it may be a glob */ | |
421 | if (i->mode_set) | |
422 | if (chmod(path, i->mode) < 0) { | |
423 | log_error("chmod(%s) failed: %m", path); | |
424 | return -errno; | |
425 | } | |
426 | ||
427 | if (i->uid_set || i->gid_set) | |
428 | if (chown(path, | |
429 | i->uid_set ? i->uid : (uid_t) -1, | |
430 | i->gid_set ? i->gid : (gid_t) -1) < 0) { | |
431 | ||
432 | log_error("chown(%s) failed: %m", path); | |
433 | return -errno; | |
434 | } | |
435 | ||
436 | return label_fix(path, false); | |
437 | } | |
438 | ||
439 | static int recursive_relabel_children(Item *i, const char *path) { | |
a8d88783 MS |
440 | DIR *d; |
441 | int ret = 0; | |
442 | ||
443 | /* This returns the first error we run into, but nevertheless | |
444 | * tries to go on */ | |
445 | ||
446 | d = opendir(path); | |
447 | if (!d) | |
448 | return errno == ENOENT ? 0 : -errno; | |
449 | ||
450 | for (;;) { | |
451 | struct dirent buf, *de; | |
452 | bool is_dir; | |
453 | int r; | |
454 | char *entry_path; | |
455 | ||
456 | r = readdir_r(d, &buf, &de); | |
457 | if (r != 0) { | |
458 | if (ret == 0) | |
459 | ret = -r; | |
460 | break; | |
461 | } | |
462 | ||
463 | if (!de) | |
464 | break; | |
465 | ||
466 | if (streq(de->d_name, ".") || streq(de->d_name, "..")) | |
467 | continue; | |
468 | ||
469 | if (asprintf(&entry_path, "%s/%s", path, de->d_name) < 0) { | |
470 | if (ret == 0) | |
471 | ret = -ENOMEM; | |
472 | continue; | |
473 | } | |
474 | ||
475 | if (de->d_type == DT_UNKNOWN) { | |
476 | struct stat st; | |
477 | ||
478 | if (lstat(entry_path, &st) < 0) { | |
479 | if (ret == 0 && errno != ENOENT) | |
480 | ret = -errno; | |
481 | free(entry_path); | |
482 | continue; | |
483 | } | |
484 | ||
485 | is_dir = S_ISDIR(st.st_mode); | |
486 | ||
487 | } else | |
488 | is_dir = de->d_type == DT_DIR; | |
489 | ||
062e01bb | 490 | r = item_set_perms(i, entry_path); |
a8d88783 MS |
491 | if (r < 0) { |
492 | if (ret == 0 && r != -ENOENT) | |
493 | ret = r; | |
494 | free(entry_path); | |
495 | continue; | |
496 | } | |
497 | ||
498 | if (is_dir) { | |
062e01bb | 499 | r = recursive_relabel_children(i, entry_path); |
a8d88783 MS |
500 | if (r < 0 && ret == 0) |
501 | ret = r; | |
502 | } | |
503 | ||
504 | free(entry_path); | |
505 | } | |
506 | ||
507 | closedir(d); | |
508 | ||
509 | return ret; | |
510 | } | |
511 | ||
512 | static int recursive_relabel(Item *i, const char *path) { | |
513 | int r; | |
514 | struct stat st; | |
515 | ||
062e01bb | 516 | r = item_set_perms(i, path); |
a8d88783 MS |
517 | if (r < 0) |
518 | return r; | |
519 | ||
520 | if (lstat(path, &st) < 0) | |
521 | return -errno; | |
522 | ||
523 | if (S_ISDIR(st.st_mode)) | |
062e01bb | 524 | r = recursive_relabel_children(i, path); |
a8d88783 MS |
525 | |
526 | return r; | |
527 | } | |
528 | ||
99e68c0b MS |
529 | static int glob_item(Item *i, int (*action)(Item *, const char *)) { |
530 | int r = 0, k; | |
531 | glob_t g; | |
532 | char **fn; | |
533 | ||
534 | zero(g); | |
535 | ||
536 | errno = 0; | |
537 | if ((k = glob(i->path, GLOB_NOSORT|GLOB_BRACE, NULL, &g)) != 0) { | |
538 | ||
539 | if (k != GLOB_NOMATCH) { | |
540 | if (errno != 0) | |
541 | errno = EIO; | |
542 | ||
543 | log_error("glob(%s) failed: %m", i->path); | |
544 | return -errno; | |
545 | } | |
546 | } | |
547 | ||
548 | STRV_FOREACH(fn, g.gl_pathv) | |
549 | if ((k = action(i, *fn)) < 0) | |
550 | r = k; | |
551 | ||
552 | globfree(&g); | |
553 | return r; | |
554 | } | |
555 | ||
3b63d2d3 | 556 | static int create_item(Item *i) { |
f05bc3f7 | 557 | int r; |
3b63d2d3 LP |
558 | mode_t u; |
559 | struct stat st; | |
5008d581 | 560 | |
3b63d2d3 | 561 | assert(i); |
5008d581 | 562 | |
3b63d2d3 LP |
563 | switch (i->type) { |
564 | ||
565 | case IGNORE_PATH: | |
566 | case REMOVE_PATH: | |
567 | case RECURSIVE_REMOVE_PATH: | |
568 | return 0; | |
5008d581 | 569 | |
3b63d2d3 | 570 | case CREATE_FILE: |
f05bc3f7 MS |
571 | case TRUNCATE_FILE: { |
572 | int fd; | |
5008d581 LP |
573 | |
574 | u = umask(0); | |
3b63d2d3 LP |
575 | fd = open(i->path, O_CREAT|O_NDELAY|O_CLOEXEC|O_WRONLY|O_NOCTTY|O_NOFOLLOW| |
576 | (i->type == TRUNCATE_FILE ? O_TRUNC : 0), i->mode); | |
5008d581 LP |
577 | umask(u); |
578 | ||
579 | if (fd < 0) { | |
3b63d2d3 | 580 | log_error("Failed to create file %s: %m", i->path); |
f05bc3f7 | 581 | return -errno; |
5008d581 LP |
582 | } |
583 | ||
f05bc3f7 MS |
584 | close_nointr_nofail(fd); |
585 | ||
586 | if (stat(i->path, &st) < 0) { | |
3b63d2d3 | 587 | log_error("stat(%s) failed: %m", i->path); |
f05bc3f7 | 588 | return -errno; |
5008d581 LP |
589 | } |
590 | ||
591 | if (!S_ISREG(st.st_mode)) { | |
3b63d2d3 | 592 | log_error("%s is not a file.", i->path); |
f05bc3f7 | 593 | return -EEXIST; |
5008d581 LP |
594 | } |
595 | ||
062e01bb | 596 | r = item_set_perms(i, i->path); |
f05bc3f7 MS |
597 | if (r < 0) |
598 | return r; | |
5008d581 | 599 | |
3b63d2d3 | 600 | break; |
f05bc3f7 | 601 | } |
3b63d2d3 LP |
602 | |
603 | case TRUNCATE_DIRECTORY: | |
604 | case CREATE_DIRECTORY: | |
5008d581 LP |
605 | |
606 | u = umask(0); | |
33366862 | 607 | mkdir_parents(i->path, 0755); |
3b63d2d3 | 608 | r = mkdir(i->path, i->mode); |
5008d581 LP |
609 | umask(u); |
610 | ||
611 | if (r < 0 && errno != EEXIST) { | |
3b63d2d3 | 612 | log_error("Failed to create directory %s: %m", i->path); |
f05bc3f7 | 613 | return -errno; |
5008d581 LP |
614 | } |
615 | ||
3b63d2d3 LP |
616 | if (stat(i->path, &st) < 0) { |
617 | log_error("stat(%s) failed: %m", i->path); | |
f05bc3f7 | 618 | return -errno; |
5008d581 LP |
619 | } |
620 | ||
621 | if (!S_ISDIR(st.st_mode)) { | |
3b63d2d3 | 622 | log_error("%s is not a directory.", i->path); |
f05bc3f7 | 623 | return -EEXIST; |
5008d581 LP |
624 | } |
625 | ||
062e01bb | 626 | r = item_set_perms(i, i->path); |
f05bc3f7 MS |
627 | if (r < 0) |
628 | return r; | |
3b63d2d3 LP |
629 | |
630 | break; | |
ee17ee7c LP |
631 | |
632 | case CREATE_FIFO: | |
633 | ||
634 | u = umask(0); | |
635 | r = mkfifo(i->path, i->mode); | |
636 | umask(u); | |
637 | ||
638 | if (r < 0 && errno != EEXIST) { | |
639 | log_error("Failed to create fifo %s: %m", i->path); | |
f05bc3f7 | 640 | return -errno; |
ee17ee7c LP |
641 | } |
642 | ||
643 | if (stat(i->path, &st) < 0) { | |
644 | log_error("stat(%s) failed: %m", i->path); | |
f05bc3f7 | 645 | return -errno; |
ee17ee7c LP |
646 | } |
647 | ||
648 | if (!S_ISFIFO(st.st_mode)) { | |
649 | log_error("%s is not a fifo.", i->path); | |
f05bc3f7 | 650 | return -EEXIST; |
ee17ee7c LP |
651 | } |
652 | ||
062e01bb | 653 | r = item_set_perms(i, i->path); |
f05bc3f7 MS |
654 | if (r < 0) |
655 | return r; | |
ee17ee7c LP |
656 | |
657 | break; | |
a8d88783 | 658 | |
777b87e7 MS |
659 | case RELABEL_PATH: |
660 | ||
661 | r = glob_item(i, item_set_perms); | |
662 | if (r < 0) | |
663 | return 0; | |
664 | break; | |
665 | ||
a8d88783 MS |
666 | case RECURSIVE_RELABEL_PATH: |
667 | ||
668 | r = glob_item(i, recursive_relabel); | |
669 | if (r < 0) | |
670 | return r; | |
3b63d2d3 LP |
671 | } |
672 | ||
3b63d2d3 LP |
673 | log_debug("%s created successfully.", i->path); |
674 | ||
f05bc3f7 | 675 | return 0; |
3b63d2d3 LP |
676 | } |
677 | ||
a0896123 | 678 | static int remove_item_instance(Item *i, const char *instance) { |
3b63d2d3 LP |
679 | int r; |
680 | ||
681 | assert(i); | |
682 | ||
683 | switch (i->type) { | |
684 | ||
685 | case CREATE_FILE: | |
686 | case TRUNCATE_FILE: | |
687 | case CREATE_DIRECTORY: | |
ee17ee7c | 688 | case CREATE_FIFO: |
3b63d2d3 | 689 | case IGNORE_PATH: |
777b87e7 | 690 | case RELABEL_PATH: |
a8d88783 | 691 | case RECURSIVE_RELABEL_PATH: |
3b63d2d3 LP |
692 | break; |
693 | ||
694 | case REMOVE_PATH: | |
b8bb3e8f LP |
695 | if (remove(instance) < 0 && errno != ENOENT) { |
696 | log_error("remove(%s): %m", instance); | |
3b63d2d3 | 697 | return -errno; |
5008d581 | 698 | } |
3b63d2d3 LP |
699 | |
700 | break; | |
701 | ||
702 | case TRUNCATE_DIRECTORY: | |
703 | case RECURSIVE_REMOVE_PATH: | |
ad293f5a | 704 | if ((r = rm_rf(instance, false, i->type == RECURSIVE_REMOVE_PATH, false)) < 0 && |
3b63d2d3 | 705 | r != -ENOENT) { |
b8bb3e8f | 706 | log_error("rm_rf(%s): %s", instance, strerror(-r)); |
3b63d2d3 LP |
707 | return r; |
708 | } | |
709 | ||
710 | break; | |
711 | } | |
712 | ||
713 | return 0; | |
714 | } | |
715 | ||
a0896123 | 716 | static int remove_item(Item *i) { |
99e68c0b MS |
717 | int r = 0; |
718 | ||
b8bb3e8f LP |
719 | assert(i); |
720 | ||
721 | switch (i->type) { | |
722 | ||
723 | case CREATE_FILE: | |
724 | case TRUNCATE_FILE: | |
725 | case CREATE_DIRECTORY: | |
ee17ee7c | 726 | case CREATE_FIFO: |
b8bb3e8f | 727 | case IGNORE_PATH: |
777b87e7 | 728 | case RELABEL_PATH: |
a8d88783 | 729 | case RECURSIVE_RELABEL_PATH: |
b8bb3e8f LP |
730 | break; |
731 | ||
732 | case REMOVE_PATH: | |
733 | case TRUNCATE_DIRECTORY: | |
99e68c0b MS |
734 | case RECURSIVE_REMOVE_PATH: |
735 | r = glob_item(i, remove_item_instance); | |
736 | break; | |
b8bb3e8f LP |
737 | } |
738 | ||
99e68c0b | 739 | return r; |
b8bb3e8f LP |
740 | } |
741 | ||
3b63d2d3 LP |
742 | static int process_item(Item *i) { |
743 | int r, q, p; | |
744 | ||
745 | assert(i); | |
746 | ||
747 | r = arg_create ? create_item(i) : 0; | |
a0896123 | 748 | q = arg_remove ? remove_item(i) : 0; |
3b63d2d3 LP |
749 | p = arg_clean ? clean_item(i) : 0; |
750 | ||
751 | if (r < 0) | |
752 | return r; | |
753 | ||
754 | if (q < 0) | |
755 | return q; | |
756 | ||
757 | return p; | |
758 | } | |
759 | ||
760 | static void item_free(Item *i) { | |
761 | assert(i); | |
762 | ||
763 | free(i->path); | |
764 | free(i); | |
765 | } | |
766 | ||
bfe95f35 LP |
767 | static bool item_equal(Item *a, Item *b) { |
768 | assert(a); | |
769 | assert(b); | |
770 | ||
771 | if (!streq_ptr(a->path, b->path)) | |
772 | return false; | |
773 | ||
774 | if (a->type != b->type) | |
775 | return false; | |
776 | ||
777 | if (a->uid_set != b->uid_set || | |
778 | (a->uid_set && a->uid != b->uid)) | |
779 | return false; | |
780 | ||
781 | if (a->gid_set != b->gid_set || | |
782 | (a->gid_set && a->gid != b->gid)) | |
783 | return false; | |
784 | ||
785 | if (a->mode_set != b->mode_set || | |
786 | (a->mode_set && a->mode != b->mode)) | |
787 | return false; | |
788 | ||
789 | if (a->age_set != b->age_set || | |
790 | (a->age_set && a->age != b->age)) | |
791 | return false; | |
792 | ||
793 | return true; | |
794 | } | |
795 | ||
fba6e687 | 796 | static int parse_line(const char *fname, unsigned line, const char *buffer) { |
bfe95f35 | 797 | Item *i, *existing; |
3b63d2d3 | 798 | char *mode = NULL, *user = NULL, *group = NULL, *age = NULL; |
66ccd038 | 799 | char type; |
bfe95f35 | 800 | Hashmap *h; |
bd40a2d8 | 801 | int r; |
3b63d2d3 LP |
802 | |
803 | assert(fname); | |
804 | assert(line >= 1); | |
805 | assert(buffer); | |
806 | ||
807 | if (!(i = new0(Item, 1))) { | |
808 | log_error("Out of memory"); | |
809 | return -ENOMEM; | |
810 | } | |
811 | ||
bd40a2d8 LP |
812 | if (sscanf(buffer, |
813 | "%c " | |
814 | "%ms " | |
815 | "%ms " | |
816 | "%ms " | |
817 | "%ms " | |
818 | "%ms", | |
66ccd038 | 819 | &type, |
bd40a2d8 LP |
820 | &i->path, |
821 | &mode, | |
822 | &user, | |
823 | &group, | |
824 | &age) < 2) { | |
3b63d2d3 LP |
825 | log_error("[%s:%u] Syntax error.", fname, line); |
826 | r = -EIO; | |
827 | goto finish; | |
5008d581 LP |
828 | } |
829 | ||
777b87e7 MS |
830 | switch(type) { |
831 | case CREATE_FILE: | |
832 | case TRUNCATE_FILE: | |
833 | case CREATE_DIRECTORY: | |
834 | case TRUNCATE_DIRECTORY: | |
835 | case CREATE_FIFO: | |
836 | case IGNORE_PATH: | |
837 | case REMOVE_PATH: | |
838 | case RECURSIVE_REMOVE_PATH: | |
839 | case RELABEL_PATH: | |
840 | case RECURSIVE_RELABEL_PATH: | |
841 | break; | |
842 | default: | |
a8d88783 | 843 | log_error("[%s:%u] Unknown file type '%c'.", fname, line, type); |
3b63d2d3 | 844 | r = -EBADMSG; |
4aa8b15b | 845 | goto finish; |
3b63d2d3 | 846 | } |
a8d88783 | 847 | i->type = type; |
3b63d2d3 LP |
848 | |
849 | if (!path_is_absolute(i->path)) { | |
850 | log_error("[%s:%u] Path '%s' not absolute.", fname, line, i->path); | |
851 | r = -EBADMSG; | |
852 | goto finish; | |
853 | } | |
854 | ||
855 | path_kill_slashes(i->path); | |
856 | ||
fba6e687 | 857 | if (arg_prefix && !path_startswith(i->path, arg_prefix)) { |
3b63d2d3 LP |
858 | r = 0; |
859 | goto finish; | |
860 | } | |
5008d581 | 861 | |
3b63d2d3 | 862 | if (user && !streq(user, "-")) { |
4b67834e LP |
863 | const char *u = user; |
864 | ||
865 | r = get_user_creds(&u, &i->uid, NULL, NULL); | |
866 | if (r < 0) { | |
3b63d2d3 | 867 | log_error("[%s:%u] Unknown user '%s'.", fname, line, user); |
3b63d2d3 LP |
868 | goto finish; |
869 | } | |
870 | ||
871 | i->uid_set = true; | |
872 | } | |
873 | ||
874 | if (group && !streq(group, "-")) { | |
4b67834e LP |
875 | const char *g = group; |
876 | ||
877 | r = get_group_creds(&g, &i->gid); | |
878 | if (r < 0) { | |
3b63d2d3 | 879 | log_error("[%s:%u] Unknown group '%s'.", fname, line, group); |
3b63d2d3 LP |
880 | goto finish; |
881 | } | |
882 | ||
883 | i->gid_set = true; | |
884 | } | |
885 | ||
886 | if (mode && !streq(mode, "-")) { | |
887 | unsigned m; | |
888 | ||
889 | if (sscanf(mode, "%o", &m) != 1) { | |
890 | log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode); | |
891 | r = -ENOENT; | |
892 | goto finish; | |
893 | } | |
894 | ||
895 | i->mode = m; | |
896 | i->mode_set = true; | |
897 | } else | |
898 | i->mode = i->type == CREATE_DIRECTORY ? 0755 : 0644; | |
899 | ||
900 | if (age && !streq(age, "-")) { | |
901 | if (parse_usec(age, &i->age) < 0) { | |
902 | log_error("[%s:%u] Invalid age '%s'.", fname, line, age); | |
903 | r = -EBADMSG; | |
904 | goto finish; | |
905 | } | |
906 | ||
907 | i->age_set = true; | |
908 | } | |
909 | ||
bfe95f35 LP |
910 | h = needs_glob(i->type) ? globs : items; |
911 | ||
912 | if ((existing = hashmap_get(h, i->path))) { | |
913 | ||
914 | /* Two identical items are fine */ | |
915 | if (!item_equal(existing, i)) | |
022707d9 | 916 | log_warning("Two or more conflicting lines for %s configured, ignoring.", i->path); |
022707d9 | 917 | |
bfe95f35 LP |
918 | r = 0; |
919 | goto finish; | |
920 | } | |
921 | ||
922 | if ((r = hashmap_put(h, i->path, i)) < 0) { | |
3b63d2d3 LP |
923 | log_error("Failed to insert item %s: %s", i->path, strerror(-r)); |
924 | goto finish; | |
925 | } | |
926 | ||
927 | i = NULL; | |
4aa8b15b | 928 | r = 0; |
5008d581 LP |
929 | |
930 | finish: | |
5008d581 LP |
931 | free(user); |
932 | free(group); | |
3b63d2d3 LP |
933 | free(mode); |
934 | free(age); | |
5008d581 | 935 | |
3b63d2d3 LP |
936 | if (i) |
937 | item_free(i); | |
4aa8b15b LP |
938 | |
939 | return r; | |
5008d581 LP |
940 | } |
941 | ||
3b63d2d3 LP |
942 | static int help(void) { |
943 | ||
522d4a49 LP |
944 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
945 | "Creates, deletes and cleans up volatile and temporary files and directories.\n\n" | |
3b63d2d3 LP |
946 | " -h --help Show this help\n" |
947 | " --create Create marked files/directories\n" | |
948 | " --clean Clean up marked directories\n" | |
fba6e687 | 949 | " --remove Remove marked files/directories\n" |
522d4a49 | 950 | " --prefix=PATH Only apply rules that apply to paths with the specified prefix\n", |
3b63d2d3 LP |
951 | program_invocation_short_name); |
952 | ||
953 | return 0; | |
954 | } | |
955 | ||
956 | static int parse_argv(int argc, char *argv[]) { | |
957 | ||
958 | enum { | |
959 | ARG_CREATE, | |
960 | ARG_CLEAN, | |
fba6e687 LP |
961 | ARG_REMOVE, |
962 | ARG_PREFIX | |
3b63d2d3 LP |
963 | }; |
964 | ||
965 | static const struct option options[] = { | |
966 | { "help", no_argument, NULL, 'h' }, | |
967 | { "create", no_argument, NULL, ARG_CREATE }, | |
968 | { "clean", no_argument, NULL, ARG_CLEAN }, | |
969 | { "remove", no_argument, NULL, ARG_REMOVE }, | |
fba6e687 | 970 | { "prefix", required_argument, NULL, ARG_PREFIX }, |
3b63d2d3 LP |
971 | { NULL, 0, NULL, 0 } |
972 | }; | |
973 | ||
974 | int c; | |
975 | ||
976 | assert(argc >= 0); | |
977 | assert(argv); | |
978 | ||
979 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) { | |
980 | ||
981 | switch (c) { | |
982 | ||
983 | case 'h': | |
984 | help(); | |
985 | return 0; | |
986 | ||
987 | case ARG_CREATE: | |
988 | arg_create = true; | |
989 | break; | |
990 | ||
991 | case ARG_CLEAN: | |
992 | arg_clean = true; | |
993 | break; | |
994 | ||
995 | case ARG_REMOVE: | |
996 | arg_remove = true; | |
997 | break; | |
998 | ||
fba6e687 LP |
999 | case ARG_PREFIX: |
1000 | arg_prefix = optarg; | |
1001 | break; | |
1002 | ||
3b63d2d3 LP |
1003 | case '?': |
1004 | return -EINVAL; | |
1005 | ||
1006 | default: | |
1007 | log_error("Unknown option code %c", c); | |
1008 | return -EINVAL; | |
1009 | } | |
1010 | } | |
1011 | ||
1012 | if (!arg_clean && !arg_create && !arg_remove) { | |
35b8ca3a | 1013 | log_error("You need to specify at least one of --clean, --create or --remove."); |
3b63d2d3 LP |
1014 | return -EINVAL; |
1015 | } | |
1016 | ||
1017 | return 1; | |
1018 | } | |
1019 | ||
fba6e687 LP |
1020 | static int read_config_file(const char *fn, bool ignore_enoent) { |
1021 | FILE *f; | |
1022 | unsigned v = 0; | |
1023 | int r = 0; | |
1024 | ||
1025 | assert(fn); | |
1026 | ||
1027 | if (!(f = fopen(fn, "re"))) { | |
1028 | ||
1029 | if (ignore_enoent && errno == ENOENT) | |
1030 | return 0; | |
1031 | ||
1032 | log_error("Failed to open %s: %m", fn); | |
1033 | return -errno; | |
1034 | } | |
1035 | ||
772f8371 | 1036 | log_debug("apply: %s\n", fn); |
fba6e687 LP |
1037 | for (;;) { |
1038 | char line[LINE_MAX], *l; | |
1039 | int k; | |
1040 | ||
1041 | if (!(fgets(line, sizeof(line), f))) | |
1042 | break; | |
1043 | ||
1044 | v++; | |
1045 | ||
1046 | l = strstrip(line); | |
1047 | if (*l == '#' || *l == 0) | |
1048 | continue; | |
1049 | ||
1050 | if ((k = parse_line(fn, v, l)) < 0) | |
1051 | if (r == 0) | |
1052 | r = k; | |
1053 | } | |
1054 | ||
1055 | if (ferror(f)) { | |
1056 | log_error("Failed to read from file %s: %m", fn); | |
1057 | if (r == 0) | |
1058 | r = -EIO; | |
1059 | } | |
1060 | ||
1061 | fclose(f); | |
1062 | ||
1063 | return r; | |
1064 | } | |
1065 | ||
5008d581 | 1066 | int main(int argc, char *argv[]) { |
fba6e687 | 1067 | int r; |
3b63d2d3 LP |
1068 | Item *i; |
1069 | Iterator iterator; | |
1070 | ||
fdcad0c2 LP |
1071 | r = parse_argv(argc, argv); |
1072 | if (r <= 0) | |
3b63d2d3 | 1073 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
5008d581 | 1074 | |
eb0ca9eb | 1075 | log_set_target(LOG_TARGET_AUTO); |
5008d581 LP |
1076 | log_parse_environment(); |
1077 | log_open(); | |
1078 | ||
4c12626c LP |
1079 | umask(0022); |
1080 | ||
5008d581 LP |
1081 | label_init(); |
1082 | ||
b8bb3e8f LP |
1083 | items = hashmap_new(string_hash_func, string_compare_func); |
1084 | globs = hashmap_new(string_hash_func, string_compare_func); | |
1085 | ||
1086 | if (!items || !globs) { | |
3b63d2d3 LP |
1087 | log_error("Out of memory"); |
1088 | r = EXIT_FAILURE; | |
1089 | goto finish; | |
1090 | } | |
1091 | ||
5008d581 LP |
1092 | r = EXIT_SUCCESS; |
1093 | ||
fba6e687 LP |
1094 | if (optind < argc) { |
1095 | int j; | |
5008d581 | 1096 | |
fba6e687 LP |
1097 | for (j = optind; j < argc; j++) |
1098 | if (read_config_file(argv[j], false) < 0) | |
1099 | r = EXIT_FAILURE; | |
5008d581 | 1100 | |
fba6e687 | 1101 | } else { |
772f8371 | 1102 | char **files, **f; |
5008d581 | 1103 | |
44143309 KS |
1104 | r = conf_files_list(&files, ".conf", |
1105 | "/run/tmpfiles.d", | |
1106 | "/etc/tmpfiles.d", | |
223a3558 | 1107 | "/usr/local/lib/tmpfiles.d", |
44143309 KS |
1108 | "/usr/lib/tmpfiles.d", |
1109 | NULL); | |
1110 | if (r < 0) { | |
1111 | r = EXIT_FAILURE; | |
1112 | log_error("Failed to enumerate tmpfiles.d files: %s", strerror(-r)); | |
1113 | goto finish; | |
1114 | } | |
3b63d2d3 | 1115 | |
772f8371 KS |
1116 | STRV_FOREACH(f, files) { |
1117 | if (read_config_file(*f, true) < 0) | |
3b63d2d3 | 1118 | r = EXIT_FAILURE; |
5008d581 LP |
1119 | } |
1120 | ||
772f8371 KS |
1121 | strv_free(files); |
1122 | } | |
5008d581 | 1123 | |
b8bb3e8f | 1124 | HASHMAP_FOREACH(i, globs, iterator) |
21bdae12 | 1125 | process_item(i); |
b8bb3e8f | 1126 | |
3b63d2d3 | 1127 | HASHMAP_FOREACH(i, items, iterator) |
21bdae12 | 1128 | process_item(i); |
3b63d2d3 | 1129 | |
5008d581 | 1130 | finish: |
3b63d2d3 LP |
1131 | while ((i = hashmap_steal_first(items))) |
1132 | item_free(i); | |
1133 | ||
17b90525 LP |
1134 | while ((i = hashmap_steal_first(globs))) |
1135 | item_free(i); | |
1136 | ||
3b63d2d3 | 1137 | hashmap_free(items); |
b8bb3e8f | 1138 | hashmap_free(globs); |
5008d581 | 1139 | |
17b90525 LP |
1140 | set_free_free(unix_sockets); |
1141 | ||
29003cff LP |
1142 | label_finish(); |
1143 | ||
5008d581 LP |
1144 | return r; |
1145 | } |