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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 | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
5008d581 LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
5008d581 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
5008d581 LP |
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> | |
cb7ed9df | 41 | #include <sys/capability.h> |
5008d581 LP |
42 | |
43 | #include "log.h" | |
44 | #include "util.h" | |
54693d9b | 45 | #include "macro.h" |
d39efe74 | 46 | #include "missing.h" |
49e942b2 | 47 | #include "mkdir.h" |
9eb977db | 48 | #include "path-util.h" |
5008d581 LP |
49 | #include "strv.h" |
50 | #include "label.h" | |
3b63d2d3 | 51 | #include "set.h" |
2c21044f | 52 | #include "conf-files.h" |
cb7ed9df | 53 | #include "capability.h" |
1731e34a | 54 | #include "specifier.h" |
eb9da376 | 55 | #include "build.h" |
5008d581 | 56 | |
01000479 | 57 | /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates |
5008d581 | 58 | * them in the file system. This is intended to be used to create |
db019b8d KS |
59 | * properly owned directories beneath /tmp, /var/tmp, /run, which are |
60 | * volatile and hence need to be recreated on bootup. */ | |
5008d581 | 61 | |
66ccd038 | 62 | typedef enum ItemType { |
b8bb3e8f | 63 | /* These ones take file names */ |
3b63d2d3 LP |
64 | CREATE_FILE = 'f', |
65 | TRUNCATE_FILE = 'F', | |
31ed59c5 | 66 | WRITE_FILE = 'w', |
3b63d2d3 LP |
67 | CREATE_DIRECTORY = 'd', |
68 | TRUNCATE_DIRECTORY = 'D', | |
ee17ee7c | 69 | CREATE_FIFO = 'p', |
468d726b LP |
70 | CREATE_SYMLINK = 'L', |
71 | CREATE_CHAR_DEVICE = 'c', | |
72 | CREATE_BLOCK_DEVICE = 'b', | |
265ffa1e | 73 | ADJUST_MODE = 'm', |
b8bb3e8f LP |
74 | |
75 | /* These ones take globs */ | |
3b63d2d3 | 76 | IGNORE_PATH = 'x', |
78a92a5a | 77 | IGNORE_DIRECTORY_PATH = 'X', |
3b63d2d3 | 78 | REMOVE_PATH = 'r', |
a8d88783 | 79 | RECURSIVE_REMOVE_PATH = 'R', |
777b87e7 | 80 | RELABEL_PATH = 'z', |
a8d88783 | 81 | RECURSIVE_RELABEL_PATH = 'Z' |
66ccd038 | 82 | } ItemType; |
3b63d2d3 LP |
83 | |
84 | typedef struct Item { | |
66ccd038 | 85 | ItemType type; |
3b63d2d3 LP |
86 | |
87 | char *path; | |
468d726b | 88 | char *argument; |
5008d581 LP |
89 | uid_t uid; |
90 | gid_t gid; | |
3b63d2d3 LP |
91 | mode_t mode; |
92 | usec_t age; | |
93 | ||
468d726b LP |
94 | dev_t major_minor; |
95 | ||
3b63d2d3 LP |
96 | bool uid_set:1; |
97 | bool gid_set:1; | |
98 | bool mode_set:1; | |
99 | bool age_set:1; | |
24f3a374 LP |
100 | |
101 | bool keep_first_level:1; | |
3b63d2d3 LP |
102 | } Item; |
103 | ||
b8bb3e8f | 104 | static Hashmap *items = NULL, *globs = NULL; |
17b90525 | 105 | static Set *unix_sockets = NULL; |
3b63d2d3 LP |
106 | |
107 | static bool arg_create = false; | |
108 | static bool arg_clean = false; | |
109 | static bool arg_remove = false; | |
81815651 | 110 | static bool arg_boot = false; |
3b63d2d3 | 111 | |
a2aced4a | 112 | static char **include_prefixes = NULL; |
5c795114 | 113 | static char **exclude_prefixes = NULL; |
cf9a4abd | 114 | static char *arg_root = NULL; |
fba6e687 | 115 | |
fabe5c0e LP |
116 | static const char conf_file_dirs[] = |
117 | "/etc/tmpfiles.d\0" | |
118 | "/run/tmpfiles.d\0" | |
119 | "/usr/local/lib/tmpfiles.d\0" | |
120 | "/usr/lib/tmpfiles.d\0" | |
3f2afb29 | 121 | #ifdef HAVE_SPLIT_USR |
fabe5c0e | 122 | "/lib/tmpfiles.d\0" |
3f2afb29 | 123 | #endif |
fabe5c0e | 124 | ; |
9125670f | 125 | |
3b63d2d3 LP |
126 | #define MAX_DEPTH 256 |
127 | ||
66ccd038 | 128 | static bool needs_glob(ItemType t) { |
78a92a5a | 129 | return t == IGNORE_PATH || t == IGNORE_DIRECTORY_PATH || t == REMOVE_PATH || t == RECURSIVE_REMOVE_PATH || t == RELABEL_PATH || t == RECURSIVE_RELABEL_PATH; |
b8bb3e8f LP |
130 | } |
131 | ||
132 | static struct Item* find_glob(Hashmap *h, const char *match) { | |
133 | Item *j; | |
134 | Iterator i; | |
135 | ||
136 | HASHMAP_FOREACH(j, h, i) | |
137 | if (fnmatch(j->path, match, FNM_PATHNAME|FNM_PERIOD) == 0) | |
138 | return j; | |
139 | ||
140 | return NULL; | |
141 | } | |
142 | ||
17b90525 | 143 | static void load_unix_sockets(void) { |
7fd1b19b | 144 | _cleanup_fclose_ FILE *f = NULL; |
17b90525 LP |
145 | char line[LINE_MAX]; |
146 | ||
147 | if (unix_sockets) | |
148 | return; | |
149 | ||
150 | /* We maintain a cache of the sockets we found in | |
151 | * /proc/net/unix to speed things up a little. */ | |
152 | ||
fdcad0c2 LP |
153 | unix_sockets = set_new(string_hash_func, string_compare_func); |
154 | if (!unix_sockets) | |
17b90525 LP |
155 | return; |
156 | ||
fdcad0c2 LP |
157 | f = fopen("/proc/net/unix", "re"); |
158 | if (!f) | |
17b90525 LP |
159 | return; |
160 | ||
fdcad0c2 LP |
161 | /* Skip header */ |
162 | if (!fgets(line, sizeof(line), f)) | |
17b90525 LP |
163 | goto fail; |
164 | ||
165 | for (;;) { | |
166 | char *p, *s; | |
167 | int k; | |
168 | ||
fdcad0c2 | 169 | if (!fgets(line, sizeof(line), f)) |
17b90525 LP |
170 | break; |
171 | ||
172 | truncate_nl(line); | |
173 | ||
fdcad0c2 LP |
174 | p = strchr(line, ':'); |
175 | if (!p) | |
176 | continue; | |
177 | ||
178 | if (strlen(p) < 37) | |
17b90525 LP |
179 | continue; |
180 | ||
fdcad0c2 | 181 | p += 37; |
17b90525 | 182 | p += strspn(p, WHITESPACE); |
fdcad0c2 | 183 | p += strcspn(p, WHITESPACE); /* skip one more word */ |
17b90525 LP |
184 | p += strspn(p, WHITESPACE); |
185 | ||
186 | if (*p != '/') | |
187 | continue; | |
188 | ||
fdcad0c2 LP |
189 | s = strdup(p); |
190 | if (!s) | |
17b90525 LP |
191 | goto fail; |
192 | ||
4ff21d85 LP |
193 | path_kill_slashes(s); |
194 | ||
ef42202a ZJS |
195 | k = set_consume(unix_sockets, s); |
196 | if (k < 0 && k != -EEXIST) | |
197 | goto fail; | |
17b90525 LP |
198 | } |
199 | ||
200 | return; | |
201 | ||
202 | fail: | |
203 | set_free_free(unix_sockets); | |
204 | unix_sockets = NULL; | |
17b90525 LP |
205 | } |
206 | ||
207 | static bool unix_socket_alive(const char *fn) { | |
208 | assert(fn); | |
209 | ||
210 | load_unix_sockets(); | |
211 | ||
212 | if (unix_sockets) | |
213 | return !!set_get(unix_sockets, (char*) fn); | |
214 | ||
215 | /* We don't know, so assume yes */ | |
216 | return true; | |
217 | } | |
218 | ||
99d680ac | 219 | static int dir_is_mount_point(DIR *d, const char *subdir) { |
370c860f | 220 | union file_handle_union h = { .handle.handle_bytes = MAX_HANDLE_SZ }; |
99d680ac KS |
221 | int mount_id_parent, mount_id; |
222 | int r_p, r; | |
223 | ||
370c860f | 224 | r_p = name_to_handle_at(dirfd(d), ".", &h.handle, &mount_id_parent, 0); |
99d680ac KS |
225 | if (r_p < 0) |
226 | r_p = -errno; | |
227 | ||
370c860f DR |
228 | h.handle.handle_bytes = MAX_HANDLE_SZ; |
229 | r = name_to_handle_at(dirfd(d), subdir, &h.handle, &mount_id, 0); | |
99d680ac KS |
230 | if (r < 0) |
231 | r = -errno; | |
232 | ||
233 | /* got no handle; make no assumptions, return error */ | |
234 | if (r_p < 0 && r < 0) | |
235 | return r_p; | |
236 | ||
237 | /* got both handles; if they differ, it is a mount point */ | |
238 | if (r_p >= 0 && r >= 0) | |
239 | return mount_id_parent != mount_id; | |
240 | ||
241 | /* got only one handle; assume different mount points if one | |
242 | * of both queries was not supported by the filesystem */ | |
243 | if (r_p == -ENOSYS || r_p == -ENOTSUP || r == -ENOSYS || r == -ENOTSUP) | |
244 | return true; | |
245 | ||
246 | /* return error */ | |
247 | if (r_p < 0) | |
248 | return r_p; | |
249 | return r; | |
250 | } | |
251 | ||
3b63d2d3 | 252 | static int dir_cleanup( |
78a92a5a | 253 | Item *i, |
3b63d2d3 LP |
254 | const char *p, |
255 | DIR *d, | |
256 | const struct stat *ds, | |
257 | usec_t cutoff, | |
258 | dev_t rootdev, | |
259 | bool mountpoint, | |
24f3a374 | 260 | int maxdepth, |
265ffa1e LP |
261 | bool keep_this_level) { |
262 | ||
3b63d2d3 LP |
263 | struct dirent *dent; |
264 | struct timespec times[2]; | |
265 | bool deleted = false; | |
3b63d2d3 LP |
266 | int r = 0; |
267 | ||
268 | while ((dent = readdir(d))) { | |
269 | struct stat s; | |
270 | usec_t age; | |
7fd1b19b | 271 | _cleanup_free_ char *sub_path = NULL; |
3b63d2d3 LP |
272 | |
273 | if (streq(dent->d_name, ".") || | |
274 | streq(dent->d_name, "..")) | |
275 | continue; | |
5008d581 | 276 | |
3b63d2d3 | 277 | if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) { |
ca2f4176 KS |
278 | if (errno == ENOENT) |
279 | continue; | |
5008d581 | 280 | |
ca2f4176 KS |
281 | /* FUSE, NFS mounts, SELinux might return EACCES */ |
282 | if (errno == EACCES) | |
283 | log_debug("stat(%s/%s) failed: %m", p, dent->d_name); | |
284 | else | |
3b63d2d3 | 285 | log_error("stat(%s/%s) failed: %m", p, dent->d_name); |
ca2f4176 | 286 | r = -errno; |
3b63d2d3 LP |
287 | continue; |
288 | } | |
289 | ||
290 | /* Stay on the same filesystem */ | |
291 | if (s.st_dev != rootdev) | |
292 | continue; | |
293 | ||
99d680ac KS |
294 | /* Try to detect bind mounts of the same filesystem instance; they |
295 | * do not differ in device major/minors. This type of query is not | |
296 | * supported on all kernels or filesystem types though. */ | |
297 | if (S_ISDIR(s.st_mode) && dir_is_mount_point(d, dent->d_name) > 0) | |
298 | continue; | |
299 | ||
3b63d2d3 LP |
300 | /* Do not delete read-only files owned by root */ |
301 | if (s.st_uid == 0 && !(s.st_mode & S_IWUSR)) | |
302 | continue; | |
303 | ||
3b63d2d3 | 304 | if (asprintf(&sub_path, "%s/%s", p, dent->d_name) < 0) { |
0d0f0c50 | 305 | r = log_oom(); |
3b63d2d3 LP |
306 | goto finish; |
307 | } | |
308 | ||
309 | /* Is there an item configured for this path? */ | |
310 | if (hashmap_get(items, sub_path)) | |
311 | continue; | |
312 | ||
b8bb3e8f LP |
313 | if (find_glob(globs, sub_path)) |
314 | continue; | |
315 | ||
3b63d2d3 LP |
316 | if (S_ISDIR(s.st_mode)) { |
317 | ||
318 | if (mountpoint && | |
319 | streq(dent->d_name, "lost+found") && | |
320 | s.st_uid == 0) | |
321 | continue; | |
322 | ||
323 | if (maxdepth <= 0) | |
324 | log_warning("Reached max depth on %s.", sub_path); | |
325 | else { | |
7fd1b19b | 326 | _cleanup_closedir_ DIR *sub_dir; |
3b63d2d3 LP |
327 | int q; |
328 | ||
e5f3d1ba | 329 | sub_dir = xopendirat(dirfd(d), dent->d_name, O_NOFOLLOW|O_NOATIME); |
3b63d2d3 LP |
330 | if (sub_dir == NULL) { |
331 | if (errno != ENOENT) { | |
332 | log_error("opendir(%s/%s) failed: %m", p, dent->d_name); | |
333 | r = -errno; | |
334 | } | |
335 | ||
336 | continue; | |
337 | } | |
338 | ||
78a92a5a | 339 | q = dir_cleanup(i, sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1, false); |
3b63d2d3 LP |
340 | |
341 | if (q < 0) | |
342 | r = q; | |
343 | } | |
344 | ||
24f3a374 LP |
345 | /* Note: if you are wondering why we don't |
346 | * support the sticky bit for excluding | |
347 | * directories from cleaning like we do it for | |
348 | * other file system objects: well, the sticky | |
349 | * bit already has a meaning for directories, | |
350 | * so we don't want to overload that. */ | |
351 | ||
352 | if (keep_this_level) | |
353 | continue; | |
354 | ||
3b63d2d3 LP |
355 | /* Ignore ctime, we change it when deleting */ |
356 | age = MAX(timespec_load(&s.st_mtim), | |
357 | timespec_load(&s.st_atim)); | |
358 | if (age >= cutoff) | |
359 | continue; | |
360 | ||
a6187d4c | 361 | if (i->type != IGNORE_DIRECTORY_PATH || !streq(dent->d_name, p)) { |
9f6445e3 | 362 | log_debug("rmdir '%s'", sub_path); |
3b63d2d3 | 363 | |
78a92a5a MS |
364 | if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) { |
365 | if (errno != ENOENT && errno != ENOTEMPTY) { | |
366 | log_error("rmdir(%s): %m", sub_path); | |
367 | r = -errno; | |
368 | } | |
3b63d2d3 LP |
369 | } |
370 | } | |
371 | ||
372 | } else { | |
9c73736d LP |
373 | /* Skip files for which the sticky bit is |
374 | * set. These are semantics we define, and are | |
375 | * unknown elsewhere. See XDG_RUNTIME_DIR | |
376 | * specification for details. */ | |
377 | if (s.st_mode & S_ISVTX) | |
378 | continue; | |
379 | ||
17b90525 | 380 | if (mountpoint && S_ISREG(s.st_mode)) { |
3b63d2d3 LP |
381 | if (streq(dent->d_name, ".journal") && |
382 | s.st_uid == 0) | |
383 | continue; | |
384 | ||
385 | if (streq(dent->d_name, "aquota.user") || | |
386 | streq(dent->d_name, "aquota.group")) | |
387 | continue; | |
388 | } | |
389 | ||
17b90525 LP |
390 | /* Ignore sockets that are listed in /proc/net/unix */ |
391 | if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path)) | |
392 | continue; | |
393 | ||
78ab08eb LP |
394 | /* Ignore device nodes */ |
395 | if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) | |
396 | continue; | |
397 | ||
24f3a374 LP |
398 | /* Keep files on this level around if this is |
399 | * requested */ | |
400 | if (keep_this_level) | |
401 | continue; | |
402 | ||
3b63d2d3 LP |
403 | age = MAX3(timespec_load(&s.st_mtim), |
404 | timespec_load(&s.st_atim), | |
405 | timespec_load(&s.st_ctim)); | |
406 | ||
407 | if (age >= cutoff) | |
408 | continue; | |
409 | ||
9f6445e3 | 410 | log_debug("unlink '%s'", sub_path); |
3b63d2d3 LP |
411 | |
412 | if (unlinkat(dirfd(d), dent->d_name, 0) < 0) { | |
413 | if (errno != ENOENT) { | |
414 | log_error("unlink(%s): %m", sub_path); | |
415 | r = -errno; | |
416 | } | |
417 | } | |
418 | ||
419 | deleted = true; | |
420 | } | |
421 | } | |
422 | ||
423 | finish: | |
424 | if (deleted) { | |
425 | /* Restore original directory timestamps */ | |
426 | times[0] = ds->st_atim; | |
427 | times[1] = ds->st_mtim; | |
428 | ||
429 | if (futimens(dirfd(d), times) < 0) | |
430 | log_error("utimensat(%s): %m", p); | |
431 | } | |
432 | ||
3b63d2d3 LP |
433 | return r; |
434 | } | |
435 | ||
265ffa1e | 436 | static int item_set_perms_full(Item *i, const char *path, bool ignore_enoent) { |
062e01bb MS |
437 | /* not using i->path directly because it may be a glob */ |
438 | if (i->mode_set) | |
439 | if (chmod(path, i->mode) < 0) { | |
265ffa1e LP |
440 | if (errno != ENOENT || !ignore_enoent) { |
441 | log_error("chmod(%s) failed: %m", path); | |
442 | return -errno; | |
443 | } | |
062e01bb MS |
444 | } |
445 | ||
446 | if (i->uid_set || i->gid_set) | |
447 | if (chown(path, | |
448 | i->uid_set ? i->uid : (uid_t) -1, | |
449 | i->gid_set ? i->gid : (gid_t) -1) < 0) { | |
450 | ||
265ffa1e LP |
451 | if (errno != ENOENT || !ignore_enoent) { |
452 | log_error("chown(%s) failed: %m", path); | |
453 | return -errno; | |
454 | } | |
062e01bb MS |
455 | } |
456 | ||
f58ceb21 | 457 | return label_fix(path, ignore_enoent, false); |
265ffa1e LP |
458 | } |
459 | ||
460 | static int item_set_perms(Item *i, const char *path) { | |
461 | return item_set_perms_full(i, path, false); | |
062e01bb MS |
462 | } |
463 | ||
d4e9eb91 | 464 | static int write_one_file(Item *i, const char *path) { |
df28bc08 KS |
465 | int e, flags; |
466 | int fd = -1; | |
d4e9eb91 | 467 | struct stat st; |
df28bc08 | 468 | int r = 0; |
d4e9eb91 DR |
469 | |
470 | flags = i->type == CREATE_FILE ? O_CREAT|O_APPEND : | |
471 | i->type == TRUNCATE_FILE ? O_CREAT|O_TRUNC : 0; | |
472 | ||
5c0d398d LP |
473 | RUN_WITH_UMASK(0) { |
474 | label_context_set(path, S_IFREG); | |
475 | fd = open(path, flags|O_NDELAY|O_CLOEXEC|O_WRONLY|O_NOCTTY|O_NOFOLLOW, i->mode); | |
476 | e = errno; | |
477 | label_context_clear(); | |
478 | errno = e; | |
479 | } | |
d4e9eb91 DR |
480 | |
481 | if (fd < 0) { | |
482 | if (i->type == WRITE_FILE && errno == ENOENT) | |
483 | return 0; | |
484 | ||
485 | log_error("Failed to create file %s: %m", path); | |
486 | return -errno; | |
487 | } | |
488 | ||
489 | if (i->argument) { | |
490 | ssize_t n; | |
491 | size_t l; | |
54693d9b | 492 | _cleanup_free_ char *unescaped; |
d4e9eb91 | 493 | |
54693d9b | 494 | unescaped = cunescape(i->argument); |
3785ba69 | 495 | if (unescaped == NULL) { |
03e334a1 | 496 | safe_close(fd); |
54693d9b | 497 | return log_oom(); |
3785ba69 | 498 | } |
d4e9eb91 | 499 | |
54693d9b DR |
500 | l = strlen(unescaped); |
501 | n = write(fd, unescaped, l); | |
d4e9eb91 | 502 | |
d4e9eb91 DR |
503 | if (n < 0 || (size_t) n < l) { |
504 | log_error("Failed to write file %s: %s", path, n < 0 ? strerror(-n) : "Short write"); | |
03e334a1 | 505 | safe_close(fd); |
d4e9eb91 DR |
506 | return n < 0 ? n : -EIO; |
507 | } | |
508 | } | |
509 | ||
03e334a1 | 510 | safe_close(fd); |
3612fbc1 | 511 | |
d4e9eb91 DR |
512 | if (stat(path, &st) < 0) { |
513 | log_error("stat(%s) failed: %m", path); | |
514 | return -errno; | |
515 | } | |
516 | ||
517 | if (!S_ISREG(st.st_mode)) { | |
518 | log_error("%s is not a file.", path); | |
519 | return -EEXIST; | |
520 | } | |
521 | ||
522 | r = item_set_perms(i, path); | |
523 | if (r < 0) | |
524 | return r; | |
525 | ||
526 | return 0; | |
527 | } | |
528 | ||
062e01bb | 529 | static int recursive_relabel_children(Item *i, const char *path) { |
7fd1b19b | 530 | _cleanup_closedir_ DIR *d; |
a8d88783 MS |
531 | int ret = 0; |
532 | ||
533 | /* This returns the first error we run into, but nevertheless | |
534 | * tries to go on */ | |
535 | ||
536 | d = opendir(path); | |
537 | if (!d) | |
538 | return errno == ENOENT ? 0 : -errno; | |
539 | ||
540 | for (;;) { | |
7d5e9c0f | 541 | struct dirent *de; |
6cf487af | 542 | bool dir; |
a8d88783 | 543 | int r; |
7fd1b19b | 544 | _cleanup_free_ char *entry_path = NULL; |
a8d88783 | 545 | |
d78096b3 FW |
546 | errno = 0; |
547 | de = readdir(d); | |
548 | if (!de && errno != 0) { | |
a8d88783 | 549 | if (ret == 0) |
d78096b3 | 550 | ret = -errno; |
a8d88783 MS |
551 | break; |
552 | } | |
553 | ||
554 | if (!de) | |
555 | break; | |
556 | ||
557 | if (streq(de->d_name, ".") || streq(de->d_name, "..")) | |
558 | continue; | |
559 | ||
560 | if (asprintf(&entry_path, "%s/%s", path, de->d_name) < 0) { | |
561 | if (ret == 0) | |
562 | ret = -ENOMEM; | |
563 | continue; | |
564 | } | |
565 | ||
566 | if (de->d_type == DT_UNKNOWN) { | |
6cf487af ZJS |
567 | r = is_dir(entry_path); |
568 | if (r < 0) { | |
a8d88783 MS |
569 | if (ret == 0 && errno != ENOENT) |
570 | ret = -errno; | |
a8d88783 MS |
571 | continue; |
572 | } | |
573 | ||
6cf487af | 574 | dir = r; |
a8d88783 MS |
575 | |
576 | } else | |
6cf487af | 577 | dir = de->d_type == DT_DIR; |
a8d88783 | 578 | |
062e01bb | 579 | r = item_set_perms(i, entry_path); |
a8d88783 MS |
580 | if (r < 0) { |
581 | if (ret == 0 && r != -ENOENT) | |
582 | ret = r; | |
a8d88783 MS |
583 | continue; |
584 | } | |
585 | ||
6cf487af | 586 | if (dir) { |
062e01bb | 587 | r = recursive_relabel_children(i, entry_path); |
a8d88783 MS |
588 | if (r < 0 && ret == 0) |
589 | ret = r; | |
590 | } | |
a8d88783 MS |
591 | } |
592 | ||
a8d88783 MS |
593 | return ret; |
594 | } | |
595 | ||
596 | static int recursive_relabel(Item *i, const char *path) { | |
597 | int r; | |
598 | struct stat st; | |
599 | ||
062e01bb | 600 | r = item_set_perms(i, path); |
a8d88783 MS |
601 | if (r < 0) |
602 | return r; | |
603 | ||
604 | if (lstat(path, &st) < 0) | |
605 | return -errno; | |
606 | ||
607 | if (S_ISDIR(st.st_mode)) | |
062e01bb | 608 | r = recursive_relabel_children(i, path); |
a8d88783 MS |
609 | |
610 | return r; | |
611 | } | |
612 | ||
99e68c0b MS |
613 | static int glob_item(Item *i, int (*action)(Item *, const char *)) { |
614 | int r = 0, k; | |
7fd1b19b | 615 | _cleanup_globfree_ glob_t g = {}; |
99e68c0b MS |
616 | char **fn; |
617 | ||
99e68c0b | 618 | errno = 0; |
c84a9488 ZJS |
619 | k = glob(i->path, GLOB_NOSORT|GLOB_BRACE, NULL, &g); |
620 | if (k != 0) | |
99e68c0b | 621 | if (k != GLOB_NOMATCH) { |
8333c77e | 622 | if (errno > 0) |
99e68c0b MS |
623 | errno = EIO; |
624 | ||
625 | log_error("glob(%s) failed: %m", i->path); | |
626 | return -errno; | |
627 | } | |
99e68c0b | 628 | |
c84a9488 ZJS |
629 | STRV_FOREACH(fn, g.gl_pathv) { |
630 | k = action(i, *fn); | |
631 | if (k < 0) | |
99e68c0b | 632 | r = k; |
c84a9488 | 633 | } |
99e68c0b | 634 | |
99e68c0b MS |
635 | return r; |
636 | } | |
637 | ||
3b63d2d3 | 638 | static int create_item(Item *i) { |
df28bc08 | 639 | int e; |
3b63d2d3 | 640 | struct stat st; |
df28bc08 | 641 | int r = 0; |
5008d581 | 642 | |
3b63d2d3 | 643 | assert(i); |
5008d581 | 644 | |
3b63d2d3 LP |
645 | switch (i->type) { |
646 | ||
647 | case IGNORE_PATH: | |
78a92a5a | 648 | case IGNORE_DIRECTORY_PATH: |
3b63d2d3 LP |
649 | case REMOVE_PATH: |
650 | case RECURSIVE_REMOVE_PATH: | |
651 | return 0; | |
5008d581 | 652 | |
3b63d2d3 | 653 | case CREATE_FILE: |
31ed59c5 | 654 | case TRUNCATE_FILE: |
1845fdd9 DR |
655 | r = write_one_file(i, i->path); |
656 | if (r < 0) | |
657 | return r; | |
658 | break; | |
265ffa1e | 659 | |
d4e9eb91 DR |
660 | case WRITE_FILE: |
661 | r = glob_item(i, write_one_file); | |
f05bc3f7 MS |
662 | if (r < 0) |
663 | return r; | |
5008d581 | 664 | |
3b63d2d3 LP |
665 | break; |
666 | ||
265ffa1e LP |
667 | case ADJUST_MODE: |
668 | r = item_set_perms_full(i, i->path, true); | |
669 | if (r < 0) | |
670 | return r; | |
671 | ||
672 | break; | |
673 | ||
3b63d2d3 LP |
674 | case TRUNCATE_DIRECTORY: |
675 | case CREATE_DIRECTORY: | |
5008d581 | 676 | |
5c0d398d LP |
677 | RUN_WITH_UMASK(0000) { |
678 | mkdir_parents_label(i->path, 0755); | |
679 | r = mkdir(i->path, i->mode); | |
680 | } | |
5008d581 LP |
681 | |
682 | if (r < 0 && errno != EEXIST) { | |
3b63d2d3 | 683 | log_error("Failed to create directory %s: %m", i->path); |
f05bc3f7 | 684 | return -errno; |
5008d581 LP |
685 | } |
686 | ||
3b63d2d3 LP |
687 | if (stat(i->path, &st) < 0) { |
688 | log_error("stat(%s) failed: %m", i->path); | |
f05bc3f7 | 689 | return -errno; |
5008d581 LP |
690 | } |
691 | ||
692 | if (!S_ISDIR(st.st_mode)) { | |
3b63d2d3 | 693 | log_error("%s is not a directory.", i->path); |
f05bc3f7 | 694 | return -EEXIST; |
5008d581 LP |
695 | } |
696 | ||
062e01bb | 697 | r = item_set_perms(i, i->path); |
f05bc3f7 MS |
698 | if (r < 0) |
699 | return r; | |
3b63d2d3 LP |
700 | |
701 | break; | |
ee17ee7c LP |
702 | |
703 | case CREATE_FIFO: | |
704 | ||
5c0d398d LP |
705 | RUN_WITH_UMASK(0000) { |
706 | r = mkfifo(i->path, i->mode); | |
707 | } | |
ee17ee7c LP |
708 | |
709 | if (r < 0 && errno != EEXIST) { | |
710 | log_error("Failed to create fifo %s: %m", i->path); | |
f05bc3f7 | 711 | return -errno; |
ee17ee7c LP |
712 | } |
713 | ||
714 | if (stat(i->path, &st) < 0) { | |
715 | log_error("stat(%s) failed: %m", i->path); | |
f05bc3f7 | 716 | return -errno; |
ee17ee7c LP |
717 | } |
718 | ||
719 | if (!S_ISFIFO(st.st_mode)) { | |
720 | log_error("%s is not a fifo.", i->path); | |
f05bc3f7 | 721 | return -EEXIST; |
ee17ee7c LP |
722 | } |
723 | ||
062e01bb | 724 | r = item_set_perms(i, i->path); |
f05bc3f7 MS |
725 | if (r < 0) |
726 | return r; | |
ee17ee7c LP |
727 | |
728 | break; | |
a8d88783 | 729 | |
468d726b | 730 | case CREATE_SYMLINK: { |
e26da2dc | 731 | _cleanup_free_ char *x = NULL; |
468d726b | 732 | |
e9a5ef7c | 733 | label_context_set(i->path, S_IFLNK); |
468d726b | 734 | r = symlink(i->argument, i->path); |
e9a5ef7c KS |
735 | e = errno; |
736 | label_context_clear(); | |
737 | errno = e; | |
738 | ||
468d726b LP |
739 | if (r < 0 && errno != EEXIST) { |
740 | log_error("symlink(%s, %s) failed: %m", i->argument, i->path); | |
741 | return -errno; | |
742 | } | |
743 | ||
744 | r = readlink_malloc(i->path, &x); | |
745 | if (r < 0) { | |
746 | log_error("readlink(%s) failed: %s", i->path, strerror(-r)); | |
747 | return -errno; | |
748 | } | |
749 | ||
750 | if (!streq(i->argument, x)) { | |
468d726b LP |
751 | log_error("%s is not the right symlinks.", i->path); |
752 | return -EEXIST; | |
753 | } | |
754 | ||
468d726b LP |
755 | break; |
756 | } | |
757 | ||
758 | case CREATE_BLOCK_DEVICE: | |
759 | case CREATE_CHAR_DEVICE: { | |
cb7ed9df LP |
760 | mode_t file_type; |
761 | ||
762 | if (have_effective_cap(CAP_MKNOD) == 0) { | |
763 | /* In a container we lack CAP_MKNOD. We | |
ab06eef8 | 764 | shouldn't attempt to create the device node in |
cb7ed9df LP |
765 | that case to avoid noise, and we don't support |
766 | virtualized devices in containers anyway. */ | |
767 | ||
768 | log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path); | |
769 | return 0; | |
770 | } | |
771 | ||
772 | file_type = (i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR); | |
468d726b | 773 | |
5c0d398d LP |
774 | RUN_WITH_UMASK(0000) { |
775 | label_context_set(i->path, file_type); | |
776 | r = mknod(i->path, i->mode | file_type, i->major_minor); | |
777 | e = errno; | |
778 | label_context_clear(); | |
779 | errno = e; | |
780 | } | |
468d726b LP |
781 | |
782 | if (r < 0 && errno != EEXIST) { | |
783 | log_error("Failed to create device node %s: %m", i->path); | |
784 | return -errno; | |
785 | } | |
786 | ||
787 | if (stat(i->path, &st) < 0) { | |
788 | log_error("stat(%s) failed: %m", i->path); | |
789 | return -errno; | |
790 | } | |
791 | ||
e7aee759 | 792 | if ((st.st_mode & S_IFMT) != file_type) { |
468d726b LP |
793 | log_error("%s is not a device node.", i->path); |
794 | return -EEXIST; | |
795 | } | |
796 | ||
797 | r = item_set_perms(i, i->path); | |
798 | if (r < 0) | |
799 | return r; | |
800 | ||
801 | break; | |
802 | } | |
803 | ||
777b87e7 MS |
804 | case RELABEL_PATH: |
805 | ||
806 | r = glob_item(i, item_set_perms); | |
807 | if (r < 0) | |
96ca8194 | 808 | return r; |
777b87e7 MS |
809 | break; |
810 | ||
a8d88783 MS |
811 | case RECURSIVE_RELABEL_PATH: |
812 | ||
813 | r = glob_item(i, recursive_relabel); | |
814 | if (r < 0) | |
815 | return r; | |
3b63d2d3 LP |
816 | } |
817 | ||
3b63d2d3 LP |
818 | log_debug("%s created successfully.", i->path); |
819 | ||
f05bc3f7 | 820 | return 0; |
3b63d2d3 LP |
821 | } |
822 | ||
a0896123 | 823 | static int remove_item_instance(Item *i, const char *instance) { |
3b63d2d3 LP |
824 | int r; |
825 | ||
826 | assert(i); | |
827 | ||
828 | switch (i->type) { | |
829 | ||
830 | case CREATE_FILE: | |
831 | case TRUNCATE_FILE: | |
832 | case CREATE_DIRECTORY: | |
ee17ee7c | 833 | case CREATE_FIFO: |
468d726b LP |
834 | case CREATE_SYMLINK: |
835 | case CREATE_BLOCK_DEVICE: | |
836 | case CREATE_CHAR_DEVICE: | |
3b63d2d3 | 837 | case IGNORE_PATH: |
78a92a5a | 838 | case IGNORE_DIRECTORY_PATH: |
777b87e7 | 839 | case RELABEL_PATH: |
a8d88783 | 840 | case RECURSIVE_RELABEL_PATH: |
31ed59c5 | 841 | case WRITE_FILE: |
265ffa1e | 842 | case ADJUST_MODE: |
3b63d2d3 LP |
843 | break; |
844 | ||
845 | case REMOVE_PATH: | |
b8bb3e8f LP |
846 | if (remove(instance) < 0 && errno != ENOENT) { |
847 | log_error("remove(%s): %m", instance); | |
3b63d2d3 | 848 | return -errno; |
5008d581 | 849 | } |
3b63d2d3 LP |
850 | |
851 | break; | |
852 | ||
853 | case TRUNCATE_DIRECTORY: | |
854 | case RECURSIVE_REMOVE_PATH: | |
d139b24a LP |
855 | /* FIXME: we probably should use dir_cleanup() here |
856 | * instead of rm_rf() so that 'x' is honoured. */ | |
f56d5db9 | 857 | r = rm_rf_dangerous(instance, false, i->type == RECURSIVE_REMOVE_PATH, false); |
468d726b | 858 | if (r < 0 && r != -ENOENT) { |
b8bb3e8f | 859 | log_error("rm_rf(%s): %s", instance, strerror(-r)); |
3b63d2d3 LP |
860 | return r; |
861 | } | |
862 | ||
863 | break; | |
864 | } | |
865 | ||
866 | return 0; | |
867 | } | |
868 | ||
a0896123 | 869 | static int remove_item(Item *i) { |
99e68c0b MS |
870 | int r = 0; |
871 | ||
b8bb3e8f LP |
872 | assert(i); |
873 | ||
874 | switch (i->type) { | |
875 | ||
876 | case CREATE_FILE: | |
877 | case TRUNCATE_FILE: | |
878 | case CREATE_DIRECTORY: | |
ee17ee7c | 879 | case CREATE_FIFO: |
468d726b LP |
880 | case CREATE_SYMLINK: |
881 | case CREATE_CHAR_DEVICE: | |
882 | case CREATE_BLOCK_DEVICE: | |
b8bb3e8f | 883 | case IGNORE_PATH: |
78a92a5a | 884 | case IGNORE_DIRECTORY_PATH: |
777b87e7 | 885 | case RELABEL_PATH: |
a8d88783 | 886 | case RECURSIVE_RELABEL_PATH: |
31ed59c5 | 887 | case WRITE_FILE: |
265ffa1e | 888 | case ADJUST_MODE: |
b8bb3e8f LP |
889 | break; |
890 | ||
891 | case REMOVE_PATH: | |
892 | case TRUNCATE_DIRECTORY: | |
99e68c0b MS |
893 | case RECURSIVE_REMOVE_PATH: |
894 | r = glob_item(i, remove_item_instance); | |
895 | break; | |
b8bb3e8f LP |
896 | } |
897 | ||
99e68c0b | 898 | return r; |
b8bb3e8f LP |
899 | } |
900 | ||
78a92a5a | 901 | static int clean_item_instance(Item *i, const char* instance) { |
7fd1b19b | 902 | _cleanup_closedir_ DIR *d = NULL; |
78a92a5a MS |
903 | struct stat s, ps; |
904 | bool mountpoint; | |
905 | int r; | |
906 | usec_t cutoff, n; | |
907 | ||
908 | assert(i); | |
909 | ||
910 | if (!i->age_set) | |
911 | return 0; | |
912 | ||
913 | n = now(CLOCK_REALTIME); | |
914 | if (n < i->age) | |
915 | return 0; | |
916 | ||
917 | cutoff = n - i->age; | |
918 | ||
919 | d = opendir(instance); | |
920 | if (!d) { | |
921 | if (errno == ENOENT || errno == ENOTDIR) | |
922 | return 0; | |
923 | ||
924 | log_error("Failed to open directory %s: %m", i->path); | |
925 | return -errno; | |
926 | } | |
927 | ||
928 | if (fstat(dirfd(d), &s) < 0) { | |
929 | log_error("stat(%s) failed: %m", i->path); | |
19fbec19 | 930 | return -errno; |
78a92a5a MS |
931 | } |
932 | ||
933 | if (!S_ISDIR(s.st_mode)) { | |
934 | log_error("%s is not a directory.", i->path); | |
19fbec19 | 935 | return -ENOTDIR; |
78a92a5a MS |
936 | } |
937 | ||
938 | if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) { | |
939 | log_error("stat(%s/..) failed: %m", i->path); | |
19fbec19 | 940 | return -errno; |
78a92a5a MS |
941 | } |
942 | ||
943 | mountpoint = s.st_dev != ps.st_dev || | |
944 | (s.st_dev == ps.st_dev && s.st_ino == ps.st_ino); | |
945 | ||
19fbec19 ZJS |
946 | r = dir_cleanup(i, instance, d, &s, cutoff, s.st_dev, mountpoint, |
947 | MAX_DEPTH, i->keep_first_level); | |
78a92a5a MS |
948 | return r; |
949 | } | |
950 | ||
951 | static int clean_item(Item *i) { | |
952 | int r = 0; | |
953 | ||
954 | assert(i); | |
955 | ||
956 | switch (i->type) { | |
957 | case CREATE_DIRECTORY: | |
958 | case TRUNCATE_DIRECTORY: | |
959 | case IGNORE_PATH: | |
960 | clean_item_instance(i, i->path); | |
961 | break; | |
962 | case IGNORE_DIRECTORY_PATH: | |
963 | r = glob_item(i, clean_item_instance); | |
964 | break; | |
965 | default: | |
966 | break; | |
967 | } | |
968 | ||
969 | return r; | |
970 | } | |
971 | ||
3b63d2d3 LP |
972 | static int process_item(Item *i) { |
973 | int r, q, p; | |
974 | ||
975 | assert(i); | |
976 | ||
977 | r = arg_create ? create_item(i) : 0; | |
a0896123 | 978 | q = arg_remove ? remove_item(i) : 0; |
3b63d2d3 LP |
979 | p = arg_clean ? clean_item(i) : 0; |
980 | ||
981 | if (r < 0) | |
982 | return r; | |
983 | ||
984 | if (q < 0) | |
985 | return q; | |
986 | ||
987 | return p; | |
988 | } | |
989 | ||
990 | static void item_free(Item *i) { | |
991 | assert(i); | |
992 | ||
993 | free(i->path); | |
468d726b | 994 | free(i->argument); |
3b63d2d3 LP |
995 | free(i); |
996 | } | |
997 | ||
14bf2c9d | 998 | DEFINE_TRIVIAL_CLEANUP_FUNC(Item*, item_free); |
e2f2fb78 MW |
999 | #define _cleanup_item_free_ _cleanup_(item_freep) |
1000 | ||
bfe95f35 LP |
1001 | static bool item_equal(Item *a, Item *b) { |
1002 | assert(a); | |
1003 | assert(b); | |
1004 | ||
1005 | if (!streq_ptr(a->path, b->path)) | |
1006 | return false; | |
1007 | ||
1008 | if (a->type != b->type) | |
1009 | return false; | |
1010 | ||
1011 | if (a->uid_set != b->uid_set || | |
1012 | (a->uid_set && a->uid != b->uid)) | |
1013 | return false; | |
1014 | ||
1015 | if (a->gid_set != b->gid_set || | |
1016 | (a->gid_set && a->gid != b->gid)) | |
1017 | return false; | |
1018 | ||
1019 | if (a->mode_set != b->mode_set || | |
1020 | (a->mode_set && a->mode != b->mode)) | |
1021 | return false; | |
1022 | ||
1023 | if (a->age_set != b->age_set || | |
1024 | (a->age_set && a->age != b->age)) | |
1025 | return false; | |
1026 | ||
31ed59c5 LP |
1027 | if ((a->type == CREATE_FILE || |
1028 | a->type == TRUNCATE_FILE || | |
1029 | a->type == WRITE_FILE || | |
1030 | a->type == CREATE_SYMLINK) && | |
1733ca54 | 1031 | !streq_ptr(a->argument, b->argument)) |
468d726b LP |
1032 | return false; |
1033 | ||
1034 | if ((a->type == CREATE_CHAR_DEVICE || | |
1035 | a->type == CREATE_BLOCK_DEVICE) && | |
1036 | a->major_minor != b->major_minor) | |
1037 | return false; | |
1038 | ||
bfe95f35 LP |
1039 | return true; |
1040 | } | |
1041 | ||
a2aced4a DR |
1042 | static bool should_include_path(const char *path) { |
1043 | char **prefix; | |
1044 | ||
5c795114 DR |
1045 | STRV_FOREACH(prefix, exclude_prefixes) { |
1046 | if (path_startswith(path, *prefix)) | |
1047 | return false; | |
1048 | } | |
a2aced4a DR |
1049 | |
1050 | STRV_FOREACH(prefix, include_prefixes) { | |
1051 | if (path_startswith(path, *prefix)) | |
1052 | return true; | |
1053 | } | |
1054 | ||
5c795114 DR |
1055 | /* no matches, so we should include this path only if we |
1056 | * have no whitelist at all */ | |
1057 | return strv_length(include_prefixes) == 0; | |
a2aced4a DR |
1058 | } |
1059 | ||
fba6e687 | 1060 | static int parse_line(const char *fname, unsigned line, const char *buffer) { |
1731e34a LP |
1061 | |
1062 | static const Specifier specifier_table[] = { | |
1063 | { 'm', specifier_machine_id, NULL }, | |
1064 | { 'b', specifier_boot_id, NULL }, | |
1065 | { 'H', specifier_host_name, NULL }, | |
1066 | { 'v', specifier_kernel_release, NULL }, | |
1067 | {} | |
1068 | }; | |
1069 | ||
e2f2fb78 | 1070 | _cleanup_item_free_ Item *i = NULL; |
7f2c1f4d | 1071 | Item *existing; |
7fd1b19b | 1072 | _cleanup_free_ char |
c4708f13 | 1073 | *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL; |
66ccd038 | 1074 | char type; |
bfe95f35 | 1075 | Hashmap *h; |
31ed59c5 | 1076 | int r, n = -1; |
3b63d2d3 LP |
1077 | |
1078 | assert(fname); | |
1079 | assert(line >= 1); | |
1080 | assert(buffer); | |
1081 | ||
19fbec19 | 1082 | r = sscanf(buffer, |
c4708f13 ZJS |
1083 | "%ms %ms %ms %ms %ms %ms %n", |
1084 | &action, | |
1731e34a | 1085 | &path, |
bd40a2d8 LP |
1086 | &mode, |
1087 | &user, | |
1088 | &group, | |
468d726b | 1089 | &age, |
19fbec19 ZJS |
1090 | &n); |
1091 | if (r < 2) { | |
3b63d2d3 | 1092 | log_error("[%s:%u] Syntax error.", fname, line); |
7f2c1f4d | 1093 | return -EIO; |
5008d581 LP |
1094 | } |
1095 | ||
c4708f13 ZJS |
1096 | if (strlen(action) > 2 || (strlen(action) > 1 && action[1] != '!')) { |
1097 | log_error("[%s:%u] Unknown modifier '%s'", fname, line, action); | |
1098 | return -EINVAL; | |
81815651 | 1099 | } else if (strlen(action) > 1 && !arg_boot) |
c4708f13 ZJS |
1100 | return 0; |
1101 | ||
1102 | type = action[0]; | |
1103 | ||
1731e34a LP |
1104 | i = new0(Item, 1); |
1105 | if (!i) | |
1106 | return log_oom(); | |
1107 | ||
1108 | r = specifier_printf(path, specifier_table, NULL, &i->path); | |
1109 | if (r < 0) { | |
1110 | log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, path); | |
1111 | return r; | |
1112 | } | |
1113 | ||
31ed59c5 LP |
1114 | if (n >= 0) { |
1115 | n += strspn(buffer+n, WHITESPACE); | |
1116 | if (buffer[n] != 0 && (buffer[n] != '-' || buffer[n+1] != 0)) { | |
1117 | i->argument = unquote(buffer+n, "\""); | |
0d0f0c50 SL |
1118 | if (!i->argument) |
1119 | return log_oom(); | |
31ed59c5 LP |
1120 | } |
1121 | } | |
1122 | ||
777b87e7 | 1123 | switch(type) { |
468d726b | 1124 | |
777b87e7 MS |
1125 | case CREATE_FILE: |
1126 | case TRUNCATE_FILE: | |
1127 | case CREATE_DIRECTORY: | |
1128 | case TRUNCATE_DIRECTORY: | |
1129 | case CREATE_FIFO: | |
1130 | case IGNORE_PATH: | |
78a92a5a | 1131 | case IGNORE_DIRECTORY_PATH: |
777b87e7 MS |
1132 | case REMOVE_PATH: |
1133 | case RECURSIVE_REMOVE_PATH: | |
1134 | case RELABEL_PATH: | |
1135 | case RECURSIVE_RELABEL_PATH: | |
265ffa1e | 1136 | case ADJUST_MODE: |
777b87e7 | 1137 | break; |
468d726b LP |
1138 | |
1139 | case CREATE_SYMLINK: | |
1140 | if (!i->argument) { | |
1141 | log_error("[%s:%u] Symlink file requires argument.", fname, line); | |
7f2c1f4d | 1142 | return -EBADMSG; |
468d726b LP |
1143 | } |
1144 | break; | |
1145 | ||
31ed59c5 LP |
1146 | case WRITE_FILE: |
1147 | if (!i->argument) { | |
1148 | log_error("[%s:%u] Write file requires argument.", fname, line); | |
7f2c1f4d | 1149 | return -EBADMSG; |
31ed59c5 LP |
1150 | } |
1151 | break; | |
1152 | ||
468d726b LP |
1153 | case CREATE_CHAR_DEVICE: |
1154 | case CREATE_BLOCK_DEVICE: { | |
1155 | unsigned major, minor; | |
1156 | ||
1157 | if (!i->argument) { | |
1158 | log_error("[%s:%u] Device file requires argument.", fname, line); | |
7f2c1f4d | 1159 | return -EBADMSG; |
468d726b LP |
1160 | } |
1161 | ||
1162 | if (sscanf(i->argument, "%u:%u", &major, &minor) != 2) { | |
1163 | log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname, line, i->argument); | |
7f2c1f4d | 1164 | return -EBADMSG; |
468d726b LP |
1165 | } |
1166 | ||
1167 | i->major_minor = makedev(major, minor); | |
1168 | break; | |
1169 | } | |
1170 | ||
777b87e7 | 1171 | default: |
a8d88783 | 1172 | log_error("[%s:%u] Unknown file type '%c'.", fname, line, type); |
7f2c1f4d | 1173 | return -EBADMSG; |
3b63d2d3 | 1174 | } |
468d726b | 1175 | |
a8d88783 | 1176 | i->type = type; |
3b63d2d3 LP |
1177 | |
1178 | if (!path_is_absolute(i->path)) { | |
1179 | log_error("[%s:%u] Path '%s' not absolute.", fname, line, i->path); | |
7f2c1f4d | 1180 | return -EBADMSG; |
3b63d2d3 LP |
1181 | } |
1182 | ||
1183 | path_kill_slashes(i->path); | |
1184 | ||
a2aced4a | 1185 | if (!should_include_path(i->path)) |
7f2c1f4d | 1186 | return 0; |
5008d581 | 1187 | |
cf9a4abd MM |
1188 | if (arg_root) { |
1189 | char *p = strappend(arg_root, i->path); | |
1190 | if (!p) | |
1191 | return log_oom(); | |
1192 | ||
1193 | free(i->path); | |
1194 | i->path = p; | |
1195 | } | |
1196 | ||
3b63d2d3 | 1197 | if (user && !streq(user, "-")) { |
4b67834e LP |
1198 | const char *u = user; |
1199 | ||
d05c5031 | 1200 | r = get_user_creds(&u, &i->uid, NULL, NULL, NULL); |
4b67834e | 1201 | if (r < 0) { |
3b63d2d3 | 1202 | log_error("[%s:%u] Unknown user '%s'.", fname, line, user); |
7f2c1f4d | 1203 | return r; |
3b63d2d3 LP |
1204 | } |
1205 | ||
1206 | i->uid_set = true; | |
1207 | } | |
1208 | ||
1209 | if (group && !streq(group, "-")) { | |
4b67834e LP |
1210 | const char *g = group; |
1211 | ||
1212 | r = get_group_creds(&g, &i->gid); | |
1213 | if (r < 0) { | |
3b63d2d3 | 1214 | log_error("[%s:%u] Unknown group '%s'.", fname, line, group); |
7f2c1f4d | 1215 | return r; |
3b63d2d3 LP |
1216 | } |
1217 | ||
1218 | i->gid_set = true; | |
1219 | } | |
1220 | ||
1221 | if (mode && !streq(mode, "-")) { | |
1222 | unsigned m; | |
1223 | ||
1224 | if (sscanf(mode, "%o", &m) != 1) { | |
1225 | log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode); | |
7f2c1f4d | 1226 | return -ENOENT; |
3b63d2d3 LP |
1227 | } |
1228 | ||
1229 | i->mode = m; | |
1230 | i->mode_set = true; | |
1231 | } else | |
468d726b LP |
1232 | i->mode = |
1233 | i->type == CREATE_DIRECTORY || | |
1234 | i->type == TRUNCATE_DIRECTORY ? 0755 : 0644; | |
3b63d2d3 LP |
1235 | |
1236 | if (age && !streq(age, "-")) { | |
24f3a374 LP |
1237 | const char *a = age; |
1238 | ||
1239 | if (*a == '~') { | |
1240 | i->keep_first_level = true; | |
1241 | a++; | |
1242 | } | |
1243 | ||
7f602784 | 1244 | if (parse_sec(a, &i->age) < 0) { |
3b63d2d3 | 1245 | log_error("[%s:%u] Invalid age '%s'.", fname, line, age); |
7f2c1f4d | 1246 | return -EBADMSG; |
3b63d2d3 LP |
1247 | } |
1248 | ||
1249 | i->age_set = true; | |
1250 | } | |
1251 | ||
bfe95f35 LP |
1252 | h = needs_glob(i->type) ? globs : items; |
1253 | ||
468d726b LP |
1254 | existing = hashmap_get(h, i->path); |
1255 | if (existing) { | |
bfe95f35 LP |
1256 | |
1257 | /* Two identical items are fine */ | |
1258 | if (!item_equal(existing, i)) | |
022707d9 | 1259 | log_warning("Two or more conflicting lines for %s configured, ignoring.", i->path); |
022707d9 | 1260 | |
7f2c1f4d | 1261 | return 0; |
bfe95f35 LP |
1262 | } |
1263 | ||
468d726b LP |
1264 | r = hashmap_put(h, i->path, i); |
1265 | if (r < 0) { | |
3b63d2d3 | 1266 | log_error("Failed to insert item %s: %s", i->path, strerror(-r)); |
7f2c1f4d | 1267 | return r; |
3b63d2d3 LP |
1268 | } |
1269 | ||
7f2c1f4d | 1270 | i = NULL; /* avoid cleanup */ |
5008d581 | 1271 | |
7f2c1f4d | 1272 | return 0; |
5008d581 LP |
1273 | } |
1274 | ||
3b63d2d3 LP |
1275 | static int help(void) { |
1276 | ||
522d4a49 LP |
1277 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
1278 | "Creates, deletes and cleans up volatile and temporary files and directories.\n\n" | |
5c795114 | 1279 | " -h --help Show this help\n" |
eb9da376 | 1280 | " --version Show package version\n" |
5c795114 DR |
1281 | " --create Create marked files/directories\n" |
1282 | " --clean Clean up marked directories\n" | |
1283 | " --remove Remove marked files/directories\n" | |
81815651 | 1284 | " --boot Execute actions only safe at boot\n" |
5c795114 | 1285 | " --prefix=PATH Only apply rules that apply to paths with the specified prefix\n" |
cf9a4abd MM |
1286 | " --exclude-prefix=PATH Ignore rules that apply to paths with the specified prefix\n" |
1287 | " --root=PATH Operate on an alternate filesystem root\n", | |
3b63d2d3 LP |
1288 | program_invocation_short_name); |
1289 | ||
1290 | return 0; | |
1291 | } | |
1292 | ||
1293 | static int parse_argv(int argc, char *argv[]) { | |
1294 | ||
1295 | enum { | |
eb9da376 | 1296 | ARG_VERSION = 0x100, |
3b63d2d3 LP |
1297 | ARG_CREATE, |
1298 | ARG_CLEAN, | |
fba6e687 | 1299 | ARG_REMOVE, |
81815651 | 1300 | ARG_BOOT, |
5c795114 DR |
1301 | ARG_PREFIX, |
1302 | ARG_EXCLUDE_PREFIX, | |
cf9a4abd | 1303 | ARG_ROOT, |
3b63d2d3 LP |
1304 | }; |
1305 | ||
1306 | static const struct option options[] = { | |
5c795114 | 1307 | { "help", no_argument, NULL, 'h' }, |
eb9da376 | 1308 | { "version", no_argument, NULL, ARG_VERSION }, |
5c795114 DR |
1309 | { "create", no_argument, NULL, ARG_CREATE }, |
1310 | { "clean", no_argument, NULL, ARG_CLEAN }, | |
1311 | { "remove", no_argument, NULL, ARG_REMOVE }, | |
81815651 | 1312 | { "boot", no_argument, NULL, ARG_BOOT }, |
5c795114 DR |
1313 | { "prefix", required_argument, NULL, ARG_PREFIX }, |
1314 | { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX }, | |
cf9a4abd | 1315 | { "root", required_argument, NULL, ARG_ROOT }, |
eb9da376 | 1316 | {} |
3b63d2d3 LP |
1317 | }; |
1318 | ||
1319 | int c; | |
1320 | ||
1321 | assert(argc >= 0); | |
1322 | assert(argv); | |
1323 | ||
1324 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) { | |
1325 | ||
1326 | switch (c) { | |
1327 | ||
1328 | case 'h': | |
eb9da376 LP |
1329 | return help(); |
1330 | ||
1331 | case ARG_VERSION: | |
1332 | puts(PACKAGE_STRING); | |
1333 | puts(SYSTEMD_FEATURES); | |
3b63d2d3 LP |
1334 | return 0; |
1335 | ||
1336 | case ARG_CREATE: | |
1337 | arg_create = true; | |
1338 | break; | |
1339 | ||
1340 | case ARG_CLEAN: | |
1341 | arg_clean = true; | |
1342 | break; | |
1343 | ||
1344 | case ARG_REMOVE: | |
1345 | arg_remove = true; | |
1346 | break; | |
1347 | ||
81815651 ZJS |
1348 | case ARG_BOOT: |
1349 | arg_boot = true; | |
c4708f13 ZJS |
1350 | break; |
1351 | ||
fba6e687 | 1352 | case ARG_PREFIX: |
498f8a39 | 1353 | if (strv_push(&include_prefixes, optarg) < 0) |
a2aced4a | 1354 | return log_oom(); |
fba6e687 LP |
1355 | break; |
1356 | ||
5c795114 | 1357 | case ARG_EXCLUDE_PREFIX: |
498f8a39 | 1358 | if (strv_push(&exclude_prefixes, optarg) < 0) |
5c795114 DR |
1359 | return log_oom(); |
1360 | break; | |
1361 | ||
cf9a4abd MM |
1362 | case ARG_ROOT: |
1363 | arg_root = path_make_absolute_cwd(optarg); | |
1364 | if (!arg_root) | |
1365 | return log_oom(); | |
1366 | path_kill_slashes(arg_root); | |
1367 | break; | |
1368 | ||
3b63d2d3 LP |
1369 | case '?': |
1370 | return -EINVAL; | |
1371 | ||
1372 | default: | |
eb9da376 | 1373 | assert_not_reached("Unhandled option"); |
3b63d2d3 LP |
1374 | } |
1375 | } | |
1376 | ||
1377 | if (!arg_clean && !arg_create && !arg_remove) { | |
35b8ca3a | 1378 | log_error("You need to specify at least one of --clean, --create or --remove."); |
3b63d2d3 LP |
1379 | return -EINVAL; |
1380 | } | |
1381 | ||
1382 | return 1; | |
1383 | } | |
1384 | ||
fba6e687 | 1385 | static int read_config_file(const char *fn, bool ignore_enoent) { |
1731e34a LP |
1386 | _cleanup_fclose_ FILE *f = NULL; |
1387 | char line[LINE_MAX]; | |
78a92a5a | 1388 | Iterator iterator; |
1731e34a | 1389 | unsigned v = 0; |
78a92a5a | 1390 | Item *i; |
1731e34a | 1391 | int r; |
fba6e687 LP |
1392 | |
1393 | assert(fn); | |
1394 | ||
cf9a4abd | 1395 | r = search_and_fopen_nulstr(fn, "re", arg_root, conf_file_dirs, &f); |
fabe5c0e LP |
1396 | if (r < 0) { |
1397 | if (ignore_enoent && r == -ENOENT) | |
fba6e687 LP |
1398 | return 0; |
1399 | ||
fabe5c0e LP |
1400 | log_error("Failed to open '%s', ignoring: %s", fn, strerror(-r)); |
1401 | return r; | |
fba6e687 LP |
1402 | } |
1403 | ||
1731e34a LP |
1404 | FOREACH_LINE(line, f, break) { |
1405 | char *l; | |
fba6e687 LP |
1406 | int k; |
1407 | ||
fba6e687 LP |
1408 | v++; |
1409 | ||
1410 | l = strstrip(line); | |
1411 | if (*l == '#' || *l == 0) | |
1412 | continue; | |
1413 | ||
1731e34a LP |
1414 | k = parse_line(fn, v, l); |
1415 | if (k < 0 && r == 0) | |
1416 | r = k; | |
fba6e687 LP |
1417 | } |
1418 | ||
78a92a5a MS |
1419 | /* we have to determine age parameter for each entry of type X */ |
1420 | HASHMAP_FOREACH(i, globs, iterator) { | |
1421 | Iterator iter; | |
1422 | Item *j, *candidate_item = NULL; | |
1423 | ||
1424 | if (i->type != IGNORE_DIRECTORY_PATH) | |
1425 | continue; | |
1426 | ||
1427 | HASHMAP_FOREACH(j, items, iter) { | |
1428 | if (j->type != CREATE_DIRECTORY && j->type != TRUNCATE_DIRECTORY) | |
1429 | continue; | |
1430 | ||
1431 | if (path_equal(j->path, i->path)) { | |
1432 | candidate_item = j; | |
1433 | break; | |
1434 | } | |
1435 | ||
1436 | if ((!candidate_item && path_startswith(i->path, j->path)) || | |
1437 | (candidate_item && path_startswith(j->path, candidate_item->path) && (fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0))) | |
1438 | candidate_item = j; | |
1439 | } | |
1440 | ||
1441 | if (candidate_item) { | |
1442 | i->age = candidate_item->age; | |
1443 | i->age_set = true; | |
1444 | } | |
1445 | } | |
1446 | ||
fba6e687 LP |
1447 | if (ferror(f)) { |
1448 | log_error("Failed to read from file %s: %m", fn); | |
1449 | if (r == 0) | |
1450 | r = -EIO; | |
1451 | } | |
1452 | ||
fba6e687 LP |
1453 | return r; |
1454 | } | |
1455 | ||
5008d581 | 1456 | int main(int argc, char *argv[]) { |
fabe5c0e | 1457 | int r, k; |
3b63d2d3 LP |
1458 | Item *i; |
1459 | Iterator iterator; | |
1460 | ||
fdcad0c2 LP |
1461 | r = parse_argv(argc, argv); |
1462 | if (r <= 0) | |
3b63d2d3 | 1463 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
5008d581 | 1464 | |
eb0ca9eb | 1465 | log_set_target(LOG_TARGET_AUTO); |
5008d581 LP |
1466 | log_parse_environment(); |
1467 | log_open(); | |
1468 | ||
4c12626c LP |
1469 | umask(0022); |
1470 | ||
e9a5ef7c | 1471 | label_init(NULL); |
5008d581 | 1472 | |
b8bb3e8f LP |
1473 | items = hashmap_new(string_hash_func, string_compare_func); |
1474 | globs = hashmap_new(string_hash_func, string_compare_func); | |
1475 | ||
1476 | if (!items || !globs) { | |
fabe5c0e | 1477 | r = log_oom(); |
3b63d2d3 LP |
1478 | goto finish; |
1479 | } | |
1480 | ||
fabe5c0e | 1481 | r = 0; |
5008d581 | 1482 | |
fba6e687 LP |
1483 | if (optind < argc) { |
1484 | int j; | |
5008d581 | 1485 | |
9125670f | 1486 | for (j = optind; j < argc; j++) { |
fabe5c0e LP |
1487 | k = read_config_file(argv[j], false); |
1488 | if (k < 0 && r == 0) | |
1489 | r = k; | |
9125670f | 1490 | } |
5008d581 | 1491 | |
fba6e687 | 1492 | } else { |
fabe5c0e LP |
1493 | _cleanup_strv_free_ char **files = NULL; |
1494 | char **f; | |
5008d581 | 1495 | |
cf9a4abd | 1496 | r = conf_files_list_nulstr(&files, ".conf", arg_root, conf_file_dirs); |
44143309 | 1497 | if (r < 0) { |
44143309 KS |
1498 | log_error("Failed to enumerate tmpfiles.d files: %s", strerror(-r)); |
1499 | goto finish; | |
1500 | } | |
3b63d2d3 | 1501 | |
772f8371 | 1502 | STRV_FOREACH(f, files) { |
fabe5c0e LP |
1503 | k = read_config_file(*f, true); |
1504 | if (k < 0 && r == 0) | |
1505 | r = k; | |
5008d581 | 1506 | } |
772f8371 | 1507 | } |
5008d581 | 1508 | |
b8bb3e8f | 1509 | HASHMAP_FOREACH(i, globs, iterator) |
21bdae12 | 1510 | process_item(i); |
b8bb3e8f | 1511 | |
3b63d2d3 | 1512 | HASHMAP_FOREACH(i, items, iterator) |
21bdae12 | 1513 | process_item(i); |
3b63d2d3 | 1514 | |
5008d581 | 1515 | finish: |
3b63d2d3 LP |
1516 | while ((i = hashmap_steal_first(items))) |
1517 | item_free(i); | |
1518 | ||
17b90525 LP |
1519 | while ((i = hashmap_steal_first(globs))) |
1520 | item_free(i); | |
1521 | ||
3b63d2d3 | 1522 | hashmap_free(items); |
b8bb3e8f | 1523 | hashmap_free(globs); |
5008d581 | 1524 | |
498f8a39 ZJS |
1525 | free(include_prefixes); |
1526 | free(exclude_prefixes); | |
cf9a4abd | 1527 | free(arg_root); |
a2aced4a | 1528 | |
17b90525 LP |
1529 | set_free_free(unix_sockets); |
1530 | ||
29003cff LP |
1531 | label_finish(); |
1532 | ||
fabe5c0e | 1533 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
5008d581 | 1534 | } |