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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
5008d581 LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
3b63d2d3 | 5 | Copyright 2010 Lennart Poettering, Kay Sievers |
3f93da98 | 6 | Copyright 2015 Zbigniew Jędrzejewski-Szmek |
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 | ||
5008d581 | 22 | #include <errno.h> |
3f6fd1ba LP |
23 | #include <fcntl.h> |
24 | #include <fnmatch.h> | |
25 | #include <getopt.h> | |
26 | #include <glob.h> | |
5008d581 | 27 | #include <limits.h> |
3f6fd1ba LP |
28 | #include <linux/fs.h> |
29 | #include <stdbool.h> | |
30 | #include <stddef.h> | |
3b63d2d3 LP |
31 | #include <stdio.h> |
32 | #include <stdlib.h> | |
3f6fd1ba | 33 | #include <string.h> |
505ef0e3 | 34 | #include <sys/stat.h> |
ebf4e801 | 35 | #include <sys/xattr.h> |
d9daae55 | 36 | #include <sysexits.h> |
3f6fd1ba LP |
37 | #include <time.h> |
38 | #include <unistd.h> | |
5008d581 | 39 | |
5a8575ef ZJS |
40 | #include "sd-path.h" |
41 | ||
3f6fd1ba | 42 | #include "acl-util.h" |
b5efdb8a | 43 | #include "alloc-util.h" |
3f6fd1ba | 44 | #include "btrfs-util.h" |
430f0182 | 45 | #include "capability-util.h" |
c8b3094d | 46 | #include "chattr-util.h" |
3f6fd1ba LP |
47 | #include "conf-files.h" |
48 | #include "copy.h" | |
a0f29c76 | 49 | #include "def.h" |
8fb3f009 | 50 | #include "dirent-util.h" |
4f5dd394 | 51 | #include "escape.h" |
3ffd4af2 | 52 | #include "fd-util.h" |
0d39fa9c | 53 | #include "fileio.h" |
f97b34a6 | 54 | #include "format-util.h" |
f4f15635 | 55 | #include "fs-util.h" |
7d50b32a | 56 | #include "glob-util.h" |
c004493c | 57 | #include "io-util.h" |
3f6fd1ba | 58 | #include "label.h" |
5008d581 | 59 | #include "log.h" |
54693d9b | 60 | #include "macro.h" |
d39efe74 | 61 | #include "missing.h" |
49e942b2 | 62 | #include "mkdir.h" |
4e036b7a | 63 | #include "mount-util.h" |
6bedfcbb | 64 | #include "parse-util.h" |
f2b5ca0e | 65 | #include "path-lookup.h" |
9eb977db | 66 | #include "path-util.h" |
c6878637 | 67 | #include "rm-rf.h" |
d7b8eec7 | 68 | #include "selinux-util.h" |
3f6fd1ba LP |
69 | #include "set.h" |
70 | #include "specifier.h" | |
8fcde012 | 71 | #include "stat-util.h" |
15a5e950 | 72 | #include "stdio-util.h" |
8b43440b | 73 | #include "string-table.h" |
07630cea | 74 | #include "string-util.h" |
3f6fd1ba | 75 | #include "strv.h" |
affb60b1 | 76 | #include "umask-util.h" |
b1d4f8e1 | 77 | #include "user-util.h" |
3f6fd1ba | 78 | #include "util.h" |
5008d581 | 79 | |
01000479 | 80 | /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates |
5008d581 | 81 | * them in the file system. This is intended to be used to create |
db019b8d KS |
82 | * properly owned directories beneath /tmp, /var/tmp, /run, which are |
83 | * volatile and hence need to be recreated on bootup. */ | |
5008d581 | 84 | |
66ccd038 | 85 | typedef enum ItemType { |
b8bb3e8f | 86 | /* These ones take file names */ |
3b63d2d3 LP |
87 | CREATE_FILE = 'f', |
88 | TRUNCATE_FILE = 'F', | |
89 | CREATE_DIRECTORY = 'd', | |
90 | TRUNCATE_DIRECTORY = 'D', | |
d7b8eec7 | 91 | CREATE_SUBVOLUME = 'v', |
5fb13eb5 LP |
92 | CREATE_SUBVOLUME_INHERIT_QUOTA = 'q', |
93 | CREATE_SUBVOLUME_NEW_QUOTA = 'Q', | |
ee17ee7c | 94 | CREATE_FIFO = 'p', |
468d726b LP |
95 | CREATE_SYMLINK = 'L', |
96 | CREATE_CHAR_DEVICE = 'c', | |
97 | CREATE_BLOCK_DEVICE = 'b', | |
849958d1 | 98 | COPY_FILES = 'C', |
b8bb3e8f LP |
99 | |
100 | /* These ones take globs */ | |
17493fa5 | 101 | WRITE_FILE = 'w', |
df8dee85 | 102 | EMPTY_DIRECTORY = 'e', |
b705ab6a ZJS |
103 | SET_XATTR = 't', |
104 | RECURSIVE_SET_XATTR = 'T', | |
105 | SET_ACL = 'a', | |
106 | RECURSIVE_SET_ACL = 'A', | |
17493fa5 LP |
107 | SET_ATTRIBUTE = 'h', |
108 | RECURSIVE_SET_ATTRIBUTE = 'H', | |
3b63d2d3 | 109 | IGNORE_PATH = 'x', |
78a92a5a | 110 | IGNORE_DIRECTORY_PATH = 'X', |
3b63d2d3 | 111 | REMOVE_PATH = 'r', |
a8d88783 | 112 | RECURSIVE_REMOVE_PATH = 'R', |
777b87e7 | 113 | RELABEL_PATH = 'z', |
e73a03e0 | 114 | RECURSIVE_RELABEL_PATH = 'Z', |
17493fa5 | 115 | ADJUST_MODE = 'm', /* legacy, 'z' is identical to this */ |
66ccd038 | 116 | } ItemType; |
3b63d2d3 LP |
117 | |
118 | typedef struct Item { | |
66ccd038 | 119 | ItemType type; |
3b63d2d3 LP |
120 | |
121 | char *path; | |
468d726b | 122 | char *argument; |
ebf4e801 | 123 | char **xattrs; |
349cc4a5 | 124 | #if HAVE_ACL |
f8eeeaf9 ZJS |
125 | acl_t acl_access; |
126 | acl_t acl_default; | |
127 | #endif | |
5008d581 LP |
128 | uid_t uid; |
129 | gid_t gid; | |
3b63d2d3 LP |
130 | mode_t mode; |
131 | usec_t age; | |
132 | ||
468d726b | 133 | dev_t major_minor; |
88ec4dfa LP |
134 | unsigned attribute_value; |
135 | unsigned attribute_mask; | |
468d726b | 136 | |
3b63d2d3 LP |
137 | bool uid_set:1; |
138 | bool gid_set:1; | |
139 | bool mode_set:1; | |
140 | bool age_set:1; | |
abef3f91 | 141 | bool mask_perms:1; |
88ec4dfa | 142 | bool attribute_set:1; |
24f3a374 LP |
143 | |
144 | bool keep_first_level:1; | |
1910cd0e | 145 | |
2e78fa79 LP |
146 | bool force:1; |
147 | ||
1910cd0e | 148 | bool done:1; |
3b63d2d3 LP |
149 | } Item; |
150 | ||
3f93da98 ZJS |
151 | typedef struct ItemArray { |
152 | Item *items; | |
153 | size_t count; | |
154 | size_t size; | |
155 | } ItemArray; | |
156 | ||
5a8575ef ZJS |
157 | typedef enum DirectoryType { |
158 | DIRECTORY_RUNTIME = 0, | |
159 | DIRECTORY_STATE, | |
160 | DIRECTORY_CACHE, | |
161 | DIRECTORY_LOGS, | |
162 | _DIRECTORY_TYPE_MAX, | |
163 | } DirectoryType; | |
164 | ||
f2b5ca0e | 165 | static bool arg_user = false; |
3b63d2d3 LP |
166 | static bool arg_create = false; |
167 | static bool arg_clean = false; | |
168 | static bool arg_remove = false; | |
81815651 | 169 | static bool arg_boot = false; |
3b63d2d3 | 170 | |
7bc040fa LP |
171 | static char **arg_include_prefixes = NULL; |
172 | static char **arg_exclude_prefixes = NULL; | |
cf9a4abd | 173 | static char *arg_root = NULL; |
a6d8474f | 174 | static char *arg_replace = NULL; |
fba6e687 | 175 | |
3b63d2d3 LP |
176 | #define MAX_DEPTH 256 |
177 | ||
ef43a391 | 178 | static OrderedHashmap *items = NULL, *globs = NULL; |
7bc040fa LP |
179 | static Set *unix_sockets = NULL; |
180 | ||
4cef1923 | 181 | static int specifier_machine_id_safe(char specifier, void *data, void *userdata, char **ret); |
5a8575ef | 182 | static int specifier_directory(char specifier, void *data, void *userdata, char **ret); |
4cef1923 | 183 | |
bd550f78 | 184 | static const Specifier specifier_table[] = { |
4cef1923 | 185 | { 'm', specifier_machine_id_safe, NULL }, |
5a8575ef ZJS |
186 | { 'b', specifier_boot_id, NULL }, |
187 | { 'H', specifier_host_name, NULL }, | |
188 | { 'v', specifier_kernel_release, NULL }, | |
189 | ||
190 | { 'U', specifier_user_id, NULL }, | |
191 | { 'u', specifier_user_name, NULL }, | |
192 | { 'h', specifier_user_home, NULL }, | |
193 | { 't', specifier_directory, UINT_TO_PTR(DIRECTORY_RUNTIME) }, | |
194 | { 'S', specifier_directory, UINT_TO_PTR(DIRECTORY_STATE) }, | |
195 | { 'C', specifier_directory, UINT_TO_PTR(DIRECTORY_CACHE) }, | |
196 | { 'L', specifier_directory, UINT_TO_PTR(DIRECTORY_LOGS) }, | |
bd550f78 LP |
197 | {} |
198 | }; | |
199 | ||
4cef1923 FB |
200 | static int specifier_machine_id_safe(char specifier, void *data, void *userdata, char **ret) { |
201 | int r; | |
202 | ||
d8dab757 FB |
203 | /* If /etc/machine_id is missing or empty (e.g. in a chroot environment) |
204 | * return a recognizable error so that the caller can skip the rule | |
4cef1923 FB |
205 | * gracefully. */ |
206 | ||
207 | r = specifier_machine_id(specifier, data, userdata, ret); | |
d8dab757 | 208 | if (IN_SET(r, -ENOENT, -ENOMEDIUM)) |
5a8575ef | 209 | return -ENXIO; |
4cef1923 FB |
210 | |
211 | return r; | |
212 | } | |
213 | ||
5a8575ef ZJS |
214 | static int specifier_directory(char specifier, void *data, void *userdata, char **ret) { |
215 | struct table_entry { | |
216 | uint64_t type; | |
217 | const char *suffix; | |
218 | }; | |
219 | ||
220 | static const struct table_entry paths_system[] = { | |
221 | [DIRECTORY_RUNTIME] = { SD_PATH_SYSTEM_RUNTIME }, | |
222 | [DIRECTORY_STATE] = { SD_PATH_SYSTEM_STATE_PRIVATE }, | |
223 | [DIRECTORY_CACHE] = { SD_PATH_SYSTEM_STATE_CACHE }, | |
224 | [DIRECTORY_LOGS] = { SD_PATH_SYSTEM_STATE_LOGS }, | |
225 | }; | |
226 | ||
227 | static const struct table_entry paths_user[] = { | |
228 | [DIRECTORY_RUNTIME] = { SD_PATH_USER_RUNTIME }, | |
229 | [DIRECTORY_STATE] = { SD_PATH_USER_CONFIGURATION }, | |
230 | [DIRECTORY_CACHE] = { SD_PATH_USER_STATE_CACHE }, | |
231 | [DIRECTORY_LOGS] = { SD_PATH_USER_CONFIGURATION, "log" }, | |
232 | }; | |
233 | ||
234 | unsigned i; | |
235 | const struct table_entry *paths; | |
236 | ||
237 | assert_cc(ELEMENTSOF(paths_system) == ELEMENTSOF(paths_user)); | |
238 | paths = arg_user ? paths_user : paths_system; | |
239 | ||
240 | i = PTR_TO_UINT(data); | |
241 | assert(i < ELEMENTSOF(paths_system)); | |
242 | ||
243 | return sd_path_home(paths[i].type, paths[i].suffix, ret); | |
244 | } | |
245 | ||
4cef1923 FB |
246 | static int log_unresolvable_specifier(const char *filename, unsigned line) { |
247 | static bool notified = false; | |
248 | ||
5a8575ef ZJS |
249 | /* In system mode, this is called when /etc is not fully initialized (e.g. |
250 | * in a chroot environment) where some specifiers are unresolvable. In user | |
251 | * mode, this is called when some variables are not defined. These cases are | |
252 | * not considered as an error so log at LOG_NOTICE only for the first time | |
253 | * and then downgrade this to LOG_DEBUG for the rest. */ | |
4cef1923 FB |
254 | |
255 | log_full(notified ? LOG_DEBUG : LOG_NOTICE, | |
5a8575ef ZJS |
256 | "[%s:%u] Failed to resolve specifier: %s, skipping", |
257 | filename, line, | |
258 | arg_user ? "Required $XDG_... variable not defined" : "uninitialized /etc detected"); | |
4cef1923 FB |
259 | |
260 | if (!notified) | |
261 | log_notice("All rules containing unresolvable specifiers will be skipped."); | |
262 | ||
263 | notified = true; | |
264 | return 0; | |
265 | } | |
266 | ||
f2b5ca0e ZJS |
267 | static int user_config_paths(char*** ret) { |
268 | _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL; | |
269 | _cleanup_free_ char *persistent_config = NULL, *runtime_config = NULL, *data_home = NULL; | |
270 | _cleanup_strv_free_ char **res = NULL; | |
271 | int r; | |
272 | ||
273 | r = xdg_user_dirs(&config_dirs, &data_dirs); | |
274 | if (r < 0) | |
275 | return r; | |
276 | ||
277 | r = xdg_user_config_dir(&persistent_config, "/user-tmpfiles.d"); | |
278 | if (r < 0 && r != -ENXIO) | |
279 | return r; | |
280 | ||
281 | r = xdg_user_runtime_dir(&runtime_config, "/user-tmpfiles.d"); | |
282 | if (r < 0 && r != -ENXIO) | |
283 | return r; | |
284 | ||
285 | r = xdg_user_data_dir(&data_home, "/user-tmpfiles.d"); | |
286 | if (r < 0 && r != -ENXIO) | |
287 | return r; | |
288 | ||
289 | r = strv_extend_strv_concat(&res, config_dirs, "/user-tmpfiles.d"); | |
290 | if (r < 0) | |
291 | return r; | |
292 | ||
293 | r = strv_extend(&res, persistent_config); | |
294 | if (r < 0) | |
295 | return r; | |
296 | ||
297 | r = strv_extend(&res, runtime_config); | |
298 | if (r < 0) | |
299 | return r; | |
300 | ||
301 | r = strv_extend(&res, data_home); | |
302 | if (r < 0) | |
303 | return r; | |
304 | ||
305 | r = strv_extend_strv_concat(&res, data_dirs, "/user-tmpfiles.d"); | |
306 | if (r < 0) | |
307 | return r; | |
308 | ||
309 | r = path_strv_make_absolute_cwd(res); | |
310 | if (r < 0) | |
311 | return r; | |
312 | ||
ae2a15bc | 313 | *ret = TAKE_PTR(res); |
f2b5ca0e ZJS |
314 | return 0; |
315 | } | |
316 | ||
66ccd038 | 317 | static bool needs_glob(ItemType t) { |
cde684a2 LP |
318 | return IN_SET(t, |
319 | WRITE_FILE, | |
320 | IGNORE_PATH, | |
321 | IGNORE_DIRECTORY_PATH, | |
322 | REMOVE_PATH, | |
323 | RECURSIVE_REMOVE_PATH, | |
df8dee85 | 324 | EMPTY_DIRECTORY, |
e73a03e0 | 325 | ADJUST_MODE, |
cde684a2 | 326 | RELABEL_PATH, |
b705ab6a ZJS |
327 | RECURSIVE_RELABEL_PATH, |
328 | SET_XATTR, | |
329 | RECURSIVE_SET_XATTR, | |
330 | SET_ACL, | |
34f64536 LP |
331 | RECURSIVE_SET_ACL, |
332 | SET_ATTRIBUTE, | |
333 | RECURSIVE_SET_ATTRIBUTE); | |
b8bb3e8f LP |
334 | } |
335 | ||
3f93da98 ZJS |
336 | static bool takes_ownership(ItemType t) { |
337 | return IN_SET(t, | |
338 | CREATE_FILE, | |
339 | TRUNCATE_FILE, | |
340 | CREATE_DIRECTORY, | |
df8dee85 | 341 | EMPTY_DIRECTORY, |
3f93da98 ZJS |
342 | TRUNCATE_DIRECTORY, |
343 | CREATE_SUBVOLUME, | |
5fb13eb5 LP |
344 | CREATE_SUBVOLUME_INHERIT_QUOTA, |
345 | CREATE_SUBVOLUME_NEW_QUOTA, | |
3f93da98 ZJS |
346 | CREATE_FIFO, |
347 | CREATE_SYMLINK, | |
348 | CREATE_CHAR_DEVICE, | |
349 | CREATE_BLOCK_DEVICE, | |
350 | COPY_FILES, | |
3f93da98 ZJS |
351 | WRITE_FILE, |
352 | IGNORE_PATH, | |
353 | IGNORE_DIRECTORY_PATH, | |
354 | REMOVE_PATH, | |
355 | RECURSIVE_REMOVE_PATH); | |
356 | } | |
357 | ||
ef43a391 | 358 | static struct Item* find_glob(OrderedHashmap *h, const char *match) { |
3f93da98 | 359 | ItemArray *j; |
b8bb3e8f LP |
360 | Iterator i; |
361 | ||
ef43a391 | 362 | ORDERED_HASHMAP_FOREACH(j, h, i) { |
3f93da98 ZJS |
363 | unsigned n; |
364 | ||
365 | for (n = 0; n < j->count; n++) { | |
366 | Item *item = j->items + n; | |
367 | ||
368 | if (fnmatch(item->path, match, FNM_PATHNAME|FNM_PERIOD) == 0) | |
369 | return item; | |
370 | } | |
371 | } | |
b8bb3e8f LP |
372 | |
373 | return NULL; | |
374 | } | |
375 | ||
17b90525 | 376 | static void load_unix_sockets(void) { |
7fd1b19b | 377 | _cleanup_fclose_ FILE *f = NULL; |
f1ff734f | 378 | int r; |
17b90525 LP |
379 | |
380 | if (unix_sockets) | |
381 | return; | |
382 | ||
f1ff734f | 383 | /* We maintain a cache of the sockets we found in /proc/net/unix to speed things up a little. */ |
17b90525 | 384 | |
548f6937 LP |
385 | unix_sockets = set_new(&path_hash_ops); |
386 | if (!unix_sockets) { | |
387 | log_oom(); | |
17b90525 | 388 | return; |
548f6937 | 389 | } |
17b90525 | 390 | |
fdcad0c2 | 391 | f = fopen("/proc/net/unix", "re"); |
f1ff734f LP |
392 | if (!f) { |
393 | log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_WARNING, errno, | |
394 | "Failed to open /proc/net/unix, ignoring: %m"); | |
395 | goto fail; | |
396 | } | |
17b90525 | 397 | |
fdcad0c2 | 398 | /* Skip header */ |
f1ff734f LP |
399 | r = read_line(f, LONG_LINE_MAX, NULL); |
400 | if (r < 0) { | |
401 | log_warning_errno(r, "Failed to skip /proc/net/unix header line: %m"); | |
402 | goto fail; | |
403 | } | |
404 | if (r == 0) { | |
405 | log_warning("Premature end of file reading /proc/net/unix."); | |
17b90525 | 406 | goto fail; |
f1ff734f | 407 | } |
17b90525 LP |
408 | |
409 | for (;;) { | |
f1ff734f | 410 | _cleanup_free_ char *line = NULL; |
17b90525 | 411 | char *p, *s; |
17b90525 | 412 | |
f1ff734f LP |
413 | r = read_line(f, LONG_LINE_MAX, &line); |
414 | if (r < 0) { | |
415 | log_warning_errno(r, "Failed to read /proc/net/unix line, ignoring: %m"); | |
416 | goto fail; | |
417 | } | |
418 | if (r == 0) /* EOF */ | |
17b90525 LP |
419 | break; |
420 | ||
fdcad0c2 LP |
421 | p = strchr(line, ':'); |
422 | if (!p) | |
423 | continue; | |
424 | ||
425 | if (strlen(p) < 37) | |
17b90525 LP |
426 | continue; |
427 | ||
fdcad0c2 | 428 | p += 37; |
17b90525 | 429 | p += strspn(p, WHITESPACE); |
fdcad0c2 | 430 | p += strcspn(p, WHITESPACE); /* skip one more word */ |
17b90525 LP |
431 | p += strspn(p, WHITESPACE); |
432 | ||
433 | if (*p != '/') | |
434 | continue; | |
435 | ||
fdcad0c2 | 436 | s = strdup(p); |
f1ff734f LP |
437 | if (!s) { |
438 | log_oom(); | |
17b90525 | 439 | goto fail; |
f1ff734f | 440 | } |
17b90525 | 441 | |
4ff21d85 LP |
442 | path_kill_slashes(s); |
443 | ||
f1ff734f LP |
444 | r = set_consume(unix_sockets, s); |
445 | if (r < 0 && r != -EEXIST) { | |
446 | log_warning_errno(r, "Failed to add AF_UNIX socket to set, ignoring: %m"); | |
ef42202a | 447 | goto fail; |
f1ff734f | 448 | } |
17b90525 LP |
449 | } |
450 | ||
451 | return; | |
452 | ||
453 | fail: | |
f1ff734f | 454 | unix_sockets = set_free_free(unix_sockets); |
17b90525 LP |
455 | } |
456 | ||
457 | static bool unix_socket_alive(const char *fn) { | |
458 | assert(fn); | |
459 | ||
460 | load_unix_sockets(); | |
461 | ||
462 | if (unix_sockets) | |
463 | return !!set_get(unix_sockets, (char*) fn); | |
464 | ||
465 | /* We don't know, so assume yes */ | |
466 | return true; | |
467 | } | |
468 | ||
99d680ac | 469 | static int dir_is_mount_point(DIR *d, const char *subdir) { |
cde684a2 | 470 | |
99d680ac KS |
471 | int mount_id_parent, mount_id; |
472 | int r_p, r; | |
473 | ||
cbfb8679 | 474 | r_p = name_to_handle_at_loop(dirfd(d), ".", NULL, &mount_id_parent, 0); |
99d680ac KS |
475 | if (r_p < 0) |
476 | r_p = -errno; | |
477 | ||
cbfb8679 | 478 | r = name_to_handle_at_loop(dirfd(d), subdir, NULL, &mount_id, 0); |
99d680ac KS |
479 | if (r < 0) |
480 | r = -errno; | |
481 | ||
482 | /* got no handle; make no assumptions, return error */ | |
483 | if (r_p < 0 && r < 0) | |
484 | return r_p; | |
485 | ||
486 | /* got both handles; if they differ, it is a mount point */ | |
487 | if (r_p >= 0 && r >= 0) | |
488 | return mount_id_parent != mount_id; | |
489 | ||
490 | /* got only one handle; assume different mount points if one | |
491 | * of both queries was not supported by the filesystem */ | |
4c701096 | 492 | if (IN_SET(r_p, -ENOSYS, -EOPNOTSUPP) || IN_SET(r, -ENOSYS, -EOPNOTSUPP)) |
99d680ac KS |
493 | return true; |
494 | ||
495 | /* return error */ | |
496 | if (r_p < 0) | |
497 | return r_p; | |
498 | return r; | |
499 | } | |
500 | ||
df99a9ef ZJS |
501 | static DIR* xopendirat_nomod(int dirfd, const char *path) { |
502 | DIR *dir; | |
503 | ||
504 | dir = xopendirat(dirfd, path, O_NOFOLLOW|O_NOATIME); | |
1532227a LP |
505 | if (dir) |
506 | return dir; | |
507 | ||
508 | log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); | |
509 | if (errno != EPERM) | |
510 | return NULL; | |
511 | ||
512 | dir = xopendirat(dirfd, path, O_NOFOLLOW); | |
513 | if (!dir) | |
514 | log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); | |
df99a9ef ZJS |
515 | |
516 | return dir; | |
517 | } | |
518 | ||
519 | static DIR* opendir_nomod(const char *path) { | |
520 | return xopendirat_nomod(AT_FDCWD, path); | |
521 | } | |
522 | ||
3b63d2d3 | 523 | static int dir_cleanup( |
78a92a5a | 524 | Item *i, |
3b63d2d3 LP |
525 | const char *p, |
526 | DIR *d, | |
527 | const struct stat *ds, | |
528 | usec_t cutoff, | |
529 | dev_t rootdev, | |
530 | bool mountpoint, | |
24f3a374 | 531 | int maxdepth, |
265ffa1e LP |
532 | bool keep_this_level) { |
533 | ||
3b63d2d3 LP |
534 | struct dirent *dent; |
535 | struct timespec times[2]; | |
536 | bool deleted = false; | |
3b63d2d3 LP |
537 | int r = 0; |
538 | ||
8fb3f009 | 539 | FOREACH_DIRENT_ALL(dent, d, break) { |
3b63d2d3 LP |
540 | struct stat s; |
541 | usec_t age; | |
7fd1b19b | 542 | _cleanup_free_ char *sub_path = NULL; |
3b63d2d3 | 543 | |
49bfc877 | 544 | if (dot_or_dot_dot(dent->d_name)) |
3b63d2d3 | 545 | continue; |
5008d581 | 546 | |
3b63d2d3 | 547 | if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) { |
ca2f4176 KS |
548 | if (errno == ENOENT) |
549 | continue; | |
5008d581 | 550 | |
ca2f4176 | 551 | /* FUSE, NFS mounts, SELinux might return EACCES */ |
ecc1709c LP |
552 | r = log_full_errno(errno == EACCES ? LOG_DEBUG : LOG_ERR, errno, |
553 | "stat(%s/%s) failed: %m", p, dent->d_name); | |
3b63d2d3 LP |
554 | continue; |
555 | } | |
556 | ||
557 | /* Stay on the same filesystem */ | |
582deb84 ZJS |
558 | if (s.st_dev != rootdev) { |
559 | log_debug("Ignoring \"%s/%s\": different filesystem.", p, dent->d_name); | |
3b63d2d3 | 560 | continue; |
582deb84 | 561 | } |
3b63d2d3 | 562 | |
99d680ac KS |
563 | /* Try to detect bind mounts of the same filesystem instance; they |
564 | * do not differ in device major/minors. This type of query is not | |
565 | * supported on all kernels or filesystem types though. */ | |
582deb84 ZJS |
566 | if (S_ISDIR(s.st_mode) && dir_is_mount_point(d, dent->d_name) > 0) { |
567 | log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.", | |
568 | p, dent->d_name); | |
99d680ac | 569 | continue; |
582deb84 | 570 | } |
99d680ac | 571 | |
605405c6 | 572 | sub_path = strjoin(p, "/", dent->d_name); |
cde684a2 | 573 | if (!sub_path) { |
0d0f0c50 | 574 | r = log_oom(); |
3b63d2d3 LP |
575 | goto finish; |
576 | } | |
577 | ||
578 | /* Is there an item configured for this path? */ | |
ef43a391 | 579 | if (ordered_hashmap_get(items, sub_path)) { |
582deb84 | 580 | log_debug("Ignoring \"%s\": a separate entry exists.", sub_path); |
3b63d2d3 | 581 | continue; |
582deb84 | 582 | } |
3b63d2d3 | 583 | |
582deb84 ZJS |
584 | if (find_glob(globs, sub_path)) { |
585 | log_debug("Ignoring \"%s\": a separate glob exists.", sub_path); | |
b8bb3e8f | 586 | continue; |
582deb84 | 587 | } |
b8bb3e8f | 588 | |
3b63d2d3 LP |
589 | if (S_ISDIR(s.st_mode)) { |
590 | ||
591 | if (mountpoint && | |
592 | streq(dent->d_name, "lost+found") && | |
582deb84 ZJS |
593 | s.st_uid == 0) { |
594 | log_debug("Ignoring \"%s\".", sub_path); | |
3b63d2d3 | 595 | continue; |
582deb84 | 596 | } |
3b63d2d3 LP |
597 | |
598 | if (maxdepth <= 0) | |
582deb84 | 599 | log_warning("Reached max depth on \"%s\".", sub_path); |
3b63d2d3 | 600 | else { |
7fd1b19b | 601 | _cleanup_closedir_ DIR *sub_dir; |
3b63d2d3 LP |
602 | int q; |
603 | ||
df99a9ef | 604 | sub_dir = xopendirat_nomod(dirfd(d), dent->d_name); |
cde684a2 | 605 | if (!sub_dir) { |
582deb84 ZJS |
606 | if (errno != ENOENT) |
607 | r = log_error_errno(errno, "opendir(%s) failed: %m", sub_path); | |
3b63d2d3 LP |
608 | |
609 | continue; | |
610 | } | |
611 | ||
78a92a5a | 612 | q = dir_cleanup(i, sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1, false); |
3b63d2d3 LP |
613 | if (q < 0) |
614 | r = q; | |
615 | } | |
616 | ||
24f3a374 LP |
617 | /* Note: if you are wondering why we don't |
618 | * support the sticky bit for excluding | |
619 | * directories from cleaning like we do it for | |
620 | * other file system objects: well, the sticky | |
621 | * bit already has a meaning for directories, | |
622 | * so we don't want to overload that. */ | |
623 | ||
582deb84 ZJS |
624 | if (keep_this_level) { |
625 | log_debug("Keeping \"%s\".", sub_path); | |
24f3a374 | 626 | continue; |
582deb84 | 627 | } |
24f3a374 | 628 | |
3b63d2d3 | 629 | /* Ignore ctime, we change it when deleting */ |
582deb84 ZJS |
630 | age = timespec_load(&s.st_mtim); |
631 | if (age >= cutoff) { | |
632 | char a[FORMAT_TIMESTAMP_MAX]; | |
633 | /* Follows spelling in stat(1). */ | |
634 | log_debug("Directory \"%s\": modify time %s is too new.", | |
635 | sub_path, | |
636 | format_timestamp_us(a, sizeof(a), age)); | |
3b63d2d3 | 637 | continue; |
582deb84 ZJS |
638 | } |
639 | ||
640 | age = timespec_load(&s.st_atim); | |
641 | if (age >= cutoff) { | |
642 | char a[FORMAT_TIMESTAMP_MAX]; | |
643 | log_debug("Directory \"%s\": access time %s is too new.", | |
644 | sub_path, | |
645 | format_timestamp_us(a, sizeof(a), age)); | |
646 | continue; | |
647 | } | |
3b63d2d3 | 648 | |
61253220 ZJS |
649 | log_debug("Removing directory \"%s\".", sub_path); |
650 | if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) | |
920ce828 LP |
651 | if (!IN_SET(errno, ENOENT, ENOTEMPTY)) |
652 | r = log_error_errno(errno, "rmdir(%s): %m", sub_path); | |
3b63d2d3 LP |
653 | |
654 | } else { | |
9c73736d LP |
655 | /* Skip files for which the sticky bit is |
656 | * set. These are semantics we define, and are | |
657 | * unknown elsewhere. See XDG_RUNTIME_DIR | |
658 | * specification for details. */ | |
582deb84 ZJS |
659 | if (s.st_mode & S_ISVTX) { |
660 | log_debug("Skipping \"%s\": sticky bit set.", sub_path); | |
9c73736d | 661 | continue; |
582deb84 | 662 | } |
9c73736d | 663 | |
582deb84 | 664 | if (mountpoint && S_ISREG(s.st_mode)) |
1542c01b ZJS |
665 | if (s.st_uid == 0 && STR_IN_SET(dent->d_name, |
666 | ".journal", | |
667 | "aquota.user", | |
668 | "aquota.group")) { | |
582deb84 | 669 | log_debug("Skipping \"%s\".", sub_path); |
3b63d2d3 | 670 | continue; |
582deb84 | 671 | } |
3b63d2d3 | 672 | |
17b90525 | 673 | /* Ignore sockets that are listed in /proc/net/unix */ |
582deb84 ZJS |
674 | if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path)) { |
675 | log_debug("Skipping \"%s\": live socket.", sub_path); | |
17b90525 | 676 | continue; |
582deb84 | 677 | } |
17b90525 | 678 | |
78ab08eb | 679 | /* Ignore device nodes */ |
582deb84 ZJS |
680 | if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) { |
681 | log_debug("Skipping \"%s\": a device.", sub_path); | |
78ab08eb | 682 | continue; |
582deb84 | 683 | } |
78ab08eb | 684 | |
24f3a374 LP |
685 | /* Keep files on this level around if this is |
686 | * requested */ | |
582deb84 ZJS |
687 | if (keep_this_level) { |
688 | log_debug("Keeping \"%s\".", sub_path); | |
24f3a374 | 689 | continue; |
582deb84 | 690 | } |
24f3a374 | 691 | |
582deb84 ZJS |
692 | age = timespec_load(&s.st_mtim); |
693 | if (age >= cutoff) { | |
694 | char a[FORMAT_TIMESTAMP_MAX]; | |
695 | /* Follows spelling in stat(1). */ | |
696 | log_debug("File \"%s\": modify time %s is too new.", | |
697 | sub_path, | |
698 | format_timestamp_us(a, sizeof(a), age)); | |
3b63d2d3 | 699 | continue; |
582deb84 | 700 | } |
3b63d2d3 | 701 | |
582deb84 ZJS |
702 | age = timespec_load(&s.st_atim); |
703 | if (age >= cutoff) { | |
704 | char a[FORMAT_TIMESTAMP_MAX]; | |
705 | log_debug("File \"%s\": access time %s is too new.", | |
706 | sub_path, | |
707 | format_timestamp_us(a, sizeof(a), age)); | |
708 | continue; | |
709 | } | |
3b63d2d3 | 710 | |
582deb84 ZJS |
711 | age = timespec_load(&s.st_ctim); |
712 | if (age >= cutoff) { | |
713 | char a[FORMAT_TIMESTAMP_MAX]; | |
714 | log_debug("File \"%s\": change time %s is too new.", | |
715 | sub_path, | |
716 | format_timestamp_us(a, sizeof(a), age)); | |
717 | continue; | |
3b63d2d3 LP |
718 | } |
719 | ||
582deb84 ZJS |
720 | log_debug("unlink \"%s\"", sub_path); |
721 | ||
722 | if (unlinkat(dirfd(d), dent->d_name, 0) < 0) | |
723 | if (errno != ENOENT) | |
724 | r = log_error_errno(errno, "unlink(%s): %m", sub_path); | |
725 | ||
3b63d2d3 LP |
726 | deleted = true; |
727 | } | |
728 | } | |
729 | ||
730 | finish: | |
731 | if (deleted) { | |
582deb84 ZJS |
732 | usec_t age1, age2; |
733 | char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX]; | |
734 | ||
3b63d2d3 LP |
735 | /* Restore original directory timestamps */ |
736 | times[0] = ds->st_atim; | |
737 | times[1] = ds->st_mtim; | |
738 | ||
582deb84 ZJS |
739 | age1 = timespec_load(&ds->st_atim); |
740 | age2 = timespec_load(&ds->st_mtim); | |
741 | log_debug("Restoring access and modification time on \"%s\": %s, %s", | |
742 | p, | |
743 | format_timestamp_us(a, sizeof(a), age1), | |
744 | format_timestamp_us(b, sizeof(b), age2)); | |
3b63d2d3 | 745 | if (futimens(dirfd(d), times) < 0) |
56f64d95 | 746 | log_error_errno(errno, "utimensat(%s): %m", p); |
3b63d2d3 LP |
747 | } |
748 | ||
3b63d2d3 LP |
749 | return r; |
750 | } | |
751 | ||
5579f856 LP |
752 | static bool dangerous_hardlinks(void) { |
753 | _cleanup_free_ char *value = NULL; | |
754 | static int cached = -1; | |
755 | int r; | |
756 | ||
757 | /* Check whether the fs.protected_hardlinks sysctl is on. If we can't determine it we assume its off, as that's | |
758 | * what the upstream default is. */ | |
759 | ||
760 | if (cached >= 0) | |
761 | return cached; | |
762 | ||
763 | r = read_one_line_file("/proc/sys/fs/protected_hardlinks", &value); | |
764 | if (r < 0) { | |
765 | log_debug_errno(r, "Failed to read fs.protected_hardlinks sysctl: %m"); | |
766 | return true; | |
767 | } | |
768 | ||
769 | r = parse_boolean(value); | |
770 | if (r < 0) { | |
771 | log_debug_errno(r, "Failed to parse fs.protected_hardlinks sysctl: %m"); | |
772 | return true; | |
773 | } | |
774 | ||
775 | cached = r == 0; | |
776 | return cached; | |
777 | } | |
778 | ||
774f79b5 | 779 | static bool hardlink_vulnerable(const struct stat *st) { |
5579f856 LP |
780 | assert(st); |
781 | ||
782 | return !S_ISDIR(st->st_mode) && st->st_nlink > 1 && dangerous_hardlinks(); | |
783 | } | |
784 | ||
936f6bdb FB |
785 | static int fd_set_perms(Item *i, int fd, const struct stat *st) { |
786 | _cleanup_free_ char *path = NULL; | |
787 | int r; | |
1924a97d | 788 | |
cde684a2 | 789 | assert(i); |
936f6bdb | 790 | assert(fd); |
780e2ee1 | 791 | |
936f6bdb FB |
792 | r = fd_get_path(fd, &path); |
793 | if (r < 0) | |
780e2ee1 | 794 | return r; |
48b8aaa8 | 795 | |
936f6bdb FB |
796 | if (!i->mode_set && !i->uid_set && !i->gid_set) |
797 | goto shortcut; | |
1924a97d | 798 | |
936f6bdb | 799 | if (hardlink_vulnerable(st)) { |
5579f856 LP |
800 | log_error("Refusing to set permissions on hardlinked file %s while the fs.protected_hardlinks sysctl is turned off.", path); |
801 | return -EPERM; | |
802 | } | |
803 | ||
51207ca1 | 804 | if (i->mode_set) { |
936f6bdb | 805 | if (S_ISLNK(st->st_mode)) |
51207ca1 LP |
806 | log_debug("Skipping mode fix for symlink %s.", path); |
807 | else { | |
48b8aaa8 LP |
808 | mode_t m = i->mode; |
809 | ||
810 | if (i->mask_perms) { | |
936f6bdb | 811 | if (!(st->st_mode & 0111)) |
48b8aaa8 | 812 | m &= ~0111; |
936f6bdb | 813 | if (!(st->st_mode & 0222)) |
7d6884b6 | 814 | m &= ~0222; |
936f6bdb | 815 | if (!(st->st_mode & 0444)) |
48b8aaa8 | 816 | m &= ~0444; |
936f6bdb | 817 | if (!S_ISDIR(st->st_mode)) |
48b8aaa8 LP |
818 | m &= ~07000; /* remove sticky/sgid/suid bit, unless directory */ |
819 | } | |
abef3f91 | 820 | |
936f6bdb FB |
821 | if (m == (st->st_mode & 07777)) |
822 | log_debug("\"%s\" has correct mode %o already.", path, st->st_mode); | |
48b8aaa8 | 823 | else { |
34d26777 | 824 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
936f6bdb | 825 | |
51207ca1 LP |
826 | log_debug("Changing \"%s\" to mode %o.", path, m); |
827 | ||
936f6bdb FB |
828 | /* fchmodat() still doesn't have AT_EMPTY_PATH flag. */ |
829 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); | |
830 | ||
831 | if (chmod(procfs_path, m) < 0) | |
832 | return log_error_errno(errno, "chmod() of %s via %s failed: %m", path, procfs_path); | |
48b8aaa8 | 833 | } |
062e01bb | 834 | } |
51207ca1 | 835 | } |
062e01bb | 836 | |
936f6bdb FB |
837 | if ((i->uid_set && i->uid != st->st_uid) || |
838 | (i->gid_set && i->gid != st->st_gid)) { | |
51207ca1 LP |
839 | log_debug("Changing \"%s\" to owner "UID_FMT":"GID_FMT, |
840 | path, | |
841 | i->uid_set ? i->uid : UID_INVALID, | |
842 | i->gid_set ? i->gid : GID_INVALID); | |
843 | ||
936f6bdb FB |
844 | if (fchownat(fd, |
845 | "", | |
846 | i->uid_set ? i->uid : UID_INVALID, | |
847 | i->gid_set ? i->gid : GID_INVALID, | |
848 | AT_EMPTY_PATH) < 0) | |
849 | return log_error_errno(errno, "fchownat() of %s failed: %m", path); | |
582deb84 | 850 | } |
062e01bb | 851 | |
59793c8f | 852 | shortcut: |
08c84981 | 853 | return label_fix(path, 0); |
062e01bb MS |
854 | } |
855 | ||
936f6bdb FB |
856 | static int path_set_perms(Item *i, const char *path) { |
857 | _cleanup_close_ int fd = -1; | |
858 | struct stat st; | |
859 | ||
860 | assert(i); | |
861 | assert(path); | |
862 | ||
863 | fd = open(path, O_NOFOLLOW|O_CLOEXEC|O_PATH); | |
864 | if (fd < 0) { | |
865 | int level = LOG_ERR, r = -errno; | |
866 | ||
867 | /* Option "e" operates only on existing objects. Do not | |
868 | * print errors about non-existent files or directories */ | |
869 | if (i->type == EMPTY_DIRECTORY && errno == ENOENT) { | |
870 | level = LOG_DEBUG; | |
871 | r = 0; | |
872 | } | |
873 | ||
874 | log_full_errno(level, errno, "Adjusting owner and mode for %s failed: %m", path); | |
875 | return r; | |
876 | } | |
877 | ||
878 | if (fstat(fd, &st) < 0) | |
879 | return log_error_errno(errno, "Failed to fstat() file %s: %m", path); | |
880 | ||
881 | return fd_set_perms(i, fd, &st); | |
882 | } | |
883 | ||
bd550f78 | 884 | static int parse_xattrs_from_arg(Item *i) { |
ebf4e801 MW |
885 | const char *p; |
886 | int r; | |
887 | ||
888 | assert(i); | |
505ef0e3 | 889 | assert(i->argument); |
ebf4e801 | 890 | |
ebf4e801 MW |
891 | p = i->argument; |
892 | ||
4034a06d | 893 | for (;;) { |
4cef1923 | 894 | _cleanup_free_ char *name = NULL, *value = NULL, *xattr = NULL; |
4034a06d | 895 | |
12ba2c44 | 896 | r = extract_first_word(&p, &xattr, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE); |
4034a06d | 897 | if (r < 0) |
bd550f78 | 898 | log_warning_errno(r, "Failed to parse extended attribute '%s', ignoring: %m", p); |
4034a06d LP |
899 | if (r <= 0) |
900 | break; | |
505ef0e3 | 901 | |
4cef1923 | 902 | r = split_pair(xattr, "=", &name, &value); |
ebf4e801 | 903 | if (r < 0) { |
4034a06d | 904 | log_warning_errno(r, "Failed to parse extended attribute, ignoring: %s", xattr); |
ebf4e801 MW |
905 | continue; |
906 | } | |
505ef0e3 | 907 | |
4034a06d | 908 | if (isempty(name) || isempty(value)) { |
bd550f78 | 909 | log_warning("Malformed extended attribute found, ignoring: %s", xattr); |
ebf4e801 MW |
910 | continue; |
911 | } | |
505ef0e3 | 912 | |
4034a06d | 913 | if (strv_push_pair(&i->xattrs, name, value) < 0) |
ebf4e801 | 914 | return log_oom(); |
505ef0e3 | 915 | |
4034a06d | 916 | name = value = NULL; |
ebf4e801 MW |
917 | } |
918 | ||
4034a06d | 919 | return 0; |
ebf4e801 MW |
920 | } |
921 | ||
936f6bdb | 922 | static int fd_set_xattrs(Item *i, int fd, const struct stat *st) { |
34d26777 | 923 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
936f6bdb | 924 | _cleanup_free_ char *path = NULL; |
ebf4e801 | 925 | char **name, **value; |
936f6bdb | 926 | int r; |
ebf4e801 MW |
927 | |
928 | assert(i); | |
936f6bdb FB |
929 | assert(fd); |
930 | ||
931 | r = fd_get_path(fd, &path); | |
932 | if (r < 0) | |
933 | return r; | |
934 | ||
935 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); | |
ebf4e801 | 936 | |
ebf4e801 | 937 | STRV_FOREACH_PAIR(name, value, i->xattrs) { |
bd550f78 | 938 | log_debug("Setting extended attribute '%s=%s' on %s.", *name, *value, path); |
936f6bdb | 939 | if (setxattr(procfs_path, *name, *value, strlen(*value), 0) < 0) |
25f027c5 ZJS |
940 | return log_error_errno(errno, "Setting extended attribute %s=%s on %s failed: %m", |
941 | *name, *value, path); | |
ebf4e801 MW |
942 | } |
943 | return 0; | |
944 | } | |
945 | ||
936f6bdb FB |
946 | static int path_set_xattrs(Item *i, const char *path) { |
947 | _cleanup_close_ int fd = -1; | |
948 | ||
949 | assert(i); | |
950 | assert(path); | |
951 | ||
952 | fd = open(path, O_CLOEXEC|O_NOFOLLOW|O_PATH); | |
953 | if (fd < 0) | |
954 | return log_error_errno(errno, "Cannot open '%s': %m", path); | |
955 | ||
956 | return fd_set_xattrs(i, fd, NULL); | |
957 | } | |
958 | ||
bd550f78 | 959 | static int parse_acls_from_arg(Item *item) { |
349cc4a5 | 960 | #if HAVE_ACL |
f8eeeaf9 | 961 | int r; |
f8eeeaf9 ZJS |
962 | |
963 | assert(item); | |
964 | ||
50d9e46d ZJS |
965 | /* If force (= modify) is set, we will not modify the acl |
966 | * afterwards, so the mask can be added now if necessary. */ | |
bd550f78 | 967 | |
50d9e46d | 968 | r = parse_acl(item->argument, &item->acl_access, &item->acl_default, !item->force); |
f8eeeaf9 | 969 | if (r < 0) |
4034a06d | 970 | log_warning_errno(r, "Failed to parse ACL \"%s\": %m. Ignoring", item->argument); |
f8eeeaf9 ZJS |
971 | #else |
972 | log_warning_errno(ENOSYS, "ACLs are not supported. Ignoring"); | |
973 | #endif | |
974 | ||
975 | return 0; | |
976 | } | |
977 | ||
349cc4a5 | 978 | #if HAVE_ACL |
48b8aaa8 LP |
979 | static int path_set_acl(const char *path, const char *pretty, acl_type_t type, acl_t acl, bool modify) { |
980 | _cleanup_(acl_free_charpp) char *t = NULL; | |
dd4105b0 | 981 | _cleanup_(acl_freep) acl_t dup = NULL; |
50d9e46d ZJS |
982 | int r; |
983 | ||
d873e877 HPD |
984 | /* Returns 0 for success, positive error if already warned, |
985 | * negative error otherwise. */ | |
986 | ||
50d9e46d | 987 | if (modify) { |
dd4105b0 | 988 | r = acls_for_file(path, type, acl, &dup); |
50d9e46d ZJS |
989 | if (r < 0) |
990 | return r; | |
50d9e46d | 991 | |
dd4105b0 ZJS |
992 | r = calc_acl_mask_if_needed(&dup); |
993 | if (r < 0) | |
994 | return r; | |
995 | } else { | |
996 | dup = acl_dup(acl); | |
997 | if (!dup) | |
998 | return -errno; | |
999 | ||
1000 | /* the mask was already added earlier if needed */ | |
1001 | } | |
1002 | ||
1003 | r = add_base_acls_if_needed(&dup, path); | |
1004 | if (r < 0) | |
1005 | return r; | |
1006 | ||
582deb84 | 1007 | t = acl_to_any_text(dup, NULL, ',', TEXT_ABBREVIATE); |
48b8aaa8 | 1008 | log_debug("Setting %s ACL %s on %s.", |
582deb84 | 1009 | type == ACL_TYPE_ACCESS ? "access" : "default", |
48b8aaa8 | 1010 | strna(t), pretty); |
50d9e46d | 1011 | |
582deb84 ZJS |
1012 | r = acl_set_file(path, type, dup); |
1013 | if (r < 0) | |
3ea40b78 LP |
1014 | /* Return positive to indicate we already warned */ |
1015 | return -log_error_errno(errno, | |
1016 | "Setting %s ACL \"%s\" on %s failed: %m", | |
1017 | type == ACL_TYPE_ACCESS ? "access" : "default", | |
48b8aaa8 | 1018 | strna(t), pretty); |
d873e877 | 1019 | |
582deb84 | 1020 | return 0; |
50d9e46d | 1021 | } |
35888b67 | 1022 | #endif |
50d9e46d | 1023 | |
936f6bdb | 1024 | static int fd_set_acls(Item *item, int fd, const struct stat *st) { |
d873e877 | 1025 | int r = 0; |
349cc4a5 | 1026 | #if HAVE_ACL |
34d26777 | 1027 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
936f6bdb | 1028 | _cleanup_free_ char *path = NULL; |
48b8aaa8 | 1029 | |
f8eeeaf9 | 1030 | assert(item); |
936f6bdb FB |
1031 | assert(fd); |
1032 | assert(st); | |
48b8aaa8 | 1033 | |
936f6bdb FB |
1034 | r = fd_get_path(fd, &path); |
1035 | if (r < 0) | |
1036 | return r; | |
48b8aaa8 | 1037 | |
936f6bdb | 1038 | if (hardlink_vulnerable(st)) { |
5579f856 LP |
1039 | log_error("Refusing to set ACLs on hardlinked file %s while the fs.protected_hardlinks sysctl is turned off.", path); |
1040 | return -EPERM; | |
1041 | } | |
1042 | ||
936f6bdb | 1043 | if (S_ISLNK(st->st_mode)) { |
48b8aaa8 LP |
1044 | log_debug("Skipping ACL fix for symlink %s.", path); |
1045 | return 0; | |
1046 | } | |
1047 | ||
936f6bdb | 1048 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); |
48b8aaa8 | 1049 | |
d873e877 | 1050 | if (item->acl_access) |
936f6bdb | 1051 | r = path_set_acl(procfs_path, path, ACL_TYPE_ACCESS, item->acl_access, item->force); |
f8eeeaf9 | 1052 | |
d873e877 | 1053 | if (r == 0 && item->acl_default) |
936f6bdb | 1054 | r = path_set_acl(procfs_path, path, ACL_TYPE_DEFAULT, item->acl_default, item->force); |
f8eeeaf9 | 1055 | |
d873e877 HPD |
1056 | if (r > 0) |
1057 | return -r; /* already warned */ | |
936f6bdb | 1058 | if (r == -EOPNOTSUPP) { |
d873e877 HPD |
1059 | log_debug_errno(r, "ACLs not supported by file system at %s", path); |
1060 | return 0; | |
936f6bdb FB |
1061 | } |
1062 | if (r < 0) | |
1063 | return log_error_errno(r, "ACL operation on \"%s\" failed: %m", path); | |
d873e877 HPD |
1064 | #endif |
1065 | return r; | |
f8eeeaf9 ZJS |
1066 | } |
1067 | ||
936f6bdb FB |
1068 | static int path_set_acls(Item *item, const char *path) { |
1069 | int r = 0; | |
1070 | #ifdef HAVE_ACL | |
1071 | _cleanup_close_ int fd = -1; | |
1072 | struct stat st; | |
1073 | ||
1074 | assert(item); | |
1075 | assert(path); | |
1076 | ||
1077 | fd = open(path, O_NOFOLLOW|O_CLOEXEC|O_PATH); | |
1078 | if (fd < 0) | |
1079 | return log_error_errno(errno, "Adjusting ACL of %s failed: %m", path); | |
1080 | ||
1081 | if (fstat(fd, &st) < 0) | |
1082 | return log_error_errno(errno, "Failed to fstat() file %s: %m", path); | |
1083 | ||
1084 | r = fd_set_acls(item, fd, &st); | |
1085 | #endif | |
1086 | return r; | |
1087 | } | |
1088 | ||
88ec4dfa LP |
1089 | #define ATTRIBUTES_ALL \ |
1090 | (FS_NOATIME_FL | \ | |
1091 | FS_SYNC_FL | \ | |
1092 | FS_DIRSYNC_FL | \ | |
1093 | FS_APPEND_FL | \ | |
1094 | FS_COMPR_FL | \ | |
1095 | FS_NODUMP_FL | \ | |
1096 | FS_EXTENT_FL | \ | |
1097 | FS_IMMUTABLE_FL | \ | |
1098 | FS_JOURNAL_DATA_FL | \ | |
1099 | FS_SECRM_FL | \ | |
1100 | FS_UNRM_FL | \ | |
1101 | FS_NOTAIL_FL | \ | |
1102 | FS_TOPDIR_FL | \ | |
1103 | FS_NOCOW_FL) | |
1104 | ||
bd550f78 | 1105 | static int parse_attribute_from_arg(Item *item) { |
88ec4dfa LP |
1106 | |
1107 | static const struct { | |
1108 | char character; | |
1109 | unsigned value; | |
1110 | } attributes[] = { | |
1111 | { 'A', FS_NOATIME_FL }, /* do not update atime */ | |
1112 | { 'S', FS_SYNC_FL }, /* Synchronous updates */ | |
1113 | { 'D', FS_DIRSYNC_FL }, /* dirsync behaviour (directories only) */ | |
1114 | { 'a', FS_APPEND_FL }, /* writes to file may only append */ | |
1115 | { 'c', FS_COMPR_FL }, /* Compress file */ | |
1116 | { 'd', FS_NODUMP_FL }, /* do not dump file */ | |
8c35b2ca | 1117 | { 'e', FS_EXTENT_FL }, /* Extents */ |
88ec4dfa LP |
1118 | { 'i', FS_IMMUTABLE_FL }, /* Immutable file */ |
1119 | { 'j', FS_JOURNAL_DATA_FL }, /* Reserved for ext3 */ | |
1120 | { 's', FS_SECRM_FL }, /* Secure deletion */ | |
1121 | { 'u', FS_UNRM_FL }, /* Undelete */ | |
1122 | { 't', FS_NOTAIL_FL }, /* file tail should not be merged */ | |
13e785f7 | 1123 | { 'T', FS_TOPDIR_FL }, /* Top of directory hierarchies */ |
88ec4dfa | 1124 | { 'C', FS_NOCOW_FL }, /* Do not cow file */ |
22c3a6ca | 1125 | }; |
88ec4dfa | 1126 | |
22c3a6ca GB |
1127 | enum { |
1128 | MODE_ADD, | |
1129 | MODE_DEL, | |
1130 | MODE_SET | |
1131 | } mode = MODE_ADD; | |
22c3a6ca | 1132 | |
88ec4dfa LP |
1133 | unsigned value = 0, mask = 0; |
1134 | const char *p; | |
22c3a6ca | 1135 | |
88ec4dfa LP |
1136 | assert(item); |
1137 | ||
1138 | p = item->argument; | |
1139 | if (p) { | |
1140 | if (*p == '+') { | |
1141 | mode = MODE_ADD; | |
1142 | p++; | |
1143 | } else if (*p == '-') { | |
1144 | mode = MODE_DEL; | |
1145 | p++; | |
1146 | } else if (*p == '=') { | |
1147 | mode = MODE_SET; | |
1148 | p++; | |
1149 | } | |
22c3a6ca GB |
1150 | } |
1151 | ||
88ec4dfa LP |
1152 | if (isempty(p) && mode != MODE_SET) { |
1153 | log_error("Setting file attribute on '%s' needs an attribute specification.", item->path); | |
22c3a6ca GB |
1154 | return -EINVAL; |
1155 | } | |
88ec4dfa LP |
1156 | |
1157 | for (; p && *p ; p++) { | |
1158 | unsigned i, v; | |
1159 | ||
1160 | for (i = 0; i < ELEMENTSOF(attributes); i++) | |
1161 | if (*p == attributes[i].character) | |
1162 | break; | |
1163 | ||
1164 | if (i >= ELEMENTSOF(attributes)) { | |
1165 | log_error("Unknown file attribute '%c' on '%s'.", *p, item->path); | |
22c3a6ca GB |
1166 | return -EINVAL; |
1167 | } | |
88ec4dfa LP |
1168 | |
1169 | v = attributes[i].value; | |
1170 | ||
3742095b | 1171 | SET_FLAG(value, v, IN_SET(mode, MODE_ADD, MODE_SET)); |
88ec4dfa LP |
1172 | |
1173 | mask |= v; | |
22c3a6ca GB |
1174 | } |
1175 | ||
1176 | if (mode == MODE_SET) | |
88ec4dfa | 1177 | mask |= ATTRIBUTES_ALL; |
22c3a6ca | 1178 | |
88ec4dfa | 1179 | assert(mask != 0); |
22c3a6ca | 1180 | |
88ec4dfa LP |
1181 | item->attribute_mask = mask; |
1182 | item->attribute_value = value; | |
1183 | item->attribute_set = true; | |
22c3a6ca GB |
1184 | |
1185 | return 0; | |
22c3a6ca GB |
1186 | } |
1187 | ||
936f6bdb | 1188 | static int fd_set_attribute(Item *item, int fd, const struct stat *st) { |
34d26777 | 1189 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
936f6bdb FB |
1190 | _cleanup_close_ int procfs_fd = -1; |
1191 | _cleanup_free_ char *path = NULL; | |
88ec4dfa LP |
1192 | unsigned f; |
1193 | int r; | |
22c3a6ca | 1194 | |
88ec4dfa | 1195 | if (!item->attribute_set || item->attribute_mask == 0) |
22c3a6ca | 1196 | return 0; |
22c3a6ca | 1197 | |
936f6bdb FB |
1198 | r = fd_get_path(fd, &path); |
1199 | if (r < 0) | |
1200 | return r; | |
88ec4dfa LP |
1201 | |
1202 | /* Issuing the file attribute ioctls on device nodes is not | |
1203 | * safe, as that will be delivered to the drivers, not the | |
1204 | * file system containing the device node. */ | |
936f6bdb | 1205 | if (!S_ISREG(st->st_mode) && !S_ISDIR(st->st_mode)) { |
88ec4dfa LP |
1206 | log_error("Setting file flags is only supported on regular files and directories, cannot set on '%s'.", path); |
1207 | return -EINVAL; | |
1208 | } | |
1209 | ||
1210 | f = item->attribute_value & item->attribute_mask; | |
1211 | ||
1212 | /* Mask away directory-specific flags */ | |
936f6bdb | 1213 | if (!S_ISDIR(st->st_mode)) |
22c3a6ca | 1214 | f &= ~FS_DIRSYNC_FL; |
88ec4dfa | 1215 | |
936f6bdb FB |
1216 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); |
1217 | ||
1218 | procfs_fd = open(procfs_path, O_RDONLY|O_CLOEXEC|O_NOATIME); | |
1219 | if (procfs_fd < 0) | |
1220 | return -errno; | |
1221 | ||
1222 | r = chattr_fd(procfs_fd, f, item->attribute_mask); | |
22c3a6ca | 1223 | if (r < 0) |
4c701096 | 1224 | log_full_errno(IN_SET(r, -ENOTTY, -EOPNOTSUPP) ? LOG_DEBUG : LOG_WARNING, |
ad75a97f LP |
1225 | r, |
1226 | "Cannot set file attribute for '%s', value=0x%08x, mask=0x%08x: %m", | |
1227 | path, item->attribute_value, item->attribute_mask); | |
22c3a6ca GB |
1228 | |
1229 | return 0; | |
1230 | } | |
1231 | ||
936f6bdb FB |
1232 | static int path_set_attribute(Item *item, const char *path) { |
1233 | _cleanup_close_ int fd = -1; | |
1234 | struct stat st; | |
1235 | ||
1236 | if (!item->attribute_set || item->attribute_mask == 0) | |
1237 | return 0; | |
1238 | ||
1239 | fd = open(path, O_CLOEXEC|O_NOFOLLOW|O_PATH); | |
1240 | if (fd < 0) | |
1241 | return log_error_errno(errno, "Cannot open '%s': %m", path); | |
1242 | ||
1243 | if (fstat(fd, &st) < 0) | |
1244 | return log_error_errno(errno, "Cannot stat '%s': %m", path); | |
1245 | ||
1246 | return fd_set_attribute(item, fd, &st); | |
1247 | } | |
1248 | ||
d4e9eb91 | 1249 | static int write_one_file(Item *i, const char *path) { |
43ad6e31 LP |
1250 | _cleanup_close_ int fd = -1; |
1251 | int flags, r = 0; | |
d4e9eb91 | 1252 | struct stat st; |
d4e9eb91 | 1253 | |
874f1947 LP |
1254 | assert(i); |
1255 | assert(path); | |
1256 | ||
49e87292 | 1257 | flags = i->type == CREATE_FILE ? O_CREAT|O_EXCL|O_NOFOLLOW : |
43ad6e31 | 1258 | i->type == TRUNCATE_FILE ? O_CREAT|O_TRUNC|O_NOFOLLOW : 0; |
d4e9eb91 | 1259 | |
43ad6e31 | 1260 | RUN_WITH_UMASK(0000) { |
ecabcf8b | 1261 | mac_selinux_create_file_prepare(path, S_IFREG); |
43ad6e31 | 1262 | fd = open(path, flags|O_NDELAY|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode); |
ecabcf8b | 1263 | mac_selinux_create_file_clear(); |
5c0d398d | 1264 | } |
d4e9eb91 DR |
1265 | |
1266 | if (fd < 0) { | |
582deb84 | 1267 | if (i->type == WRITE_FILE && errno == ENOENT) { |
49e87292 | 1268 | log_debug_errno(errno, "Not writing missing file \"%s\": %m", path); |
d4e9eb91 | 1269 | return 0; |
582deb84 | 1270 | } |
49e87292 LP |
1271 | if (i->type == CREATE_FILE && errno == EEXIST) { |
1272 | log_debug_errno(errno, "Not writing to pre-existing file \"%s\": %m", path); | |
1273 | goto done; | |
1274 | } | |
d4e9eb91 | 1275 | |
f44b28fd MO |
1276 | r = -errno; |
1277 | if (!i->argument && errno == EROFS && stat(path, &st) == 0 && | |
1278 | (i->type == CREATE_FILE || st.st_size == 0)) | |
1279 | goto check_mode; | |
1280 | ||
1281 | return log_error_errno(r, "Failed to create file %s: %m", path); | |
d4e9eb91 DR |
1282 | } |
1283 | ||
1284 | if (i->argument) { | |
4034a06d | 1285 | log_debug("%s to \"%s\".", i->type == CREATE_FILE ? "Appending" : "Writing", path); |
d4e9eb91 | 1286 | |
4cef1923 | 1287 | r = loop_write(fd, i->argument, strlen(i->argument), false); |
582deb84 ZJS |
1288 | if (r < 0) |
1289 | return log_error_errno(r, "Failed to write file \"%s\": %m", path); | |
1290 | } else | |
1291 | log_debug("\"%s\" has been created.", path); | |
d4e9eb91 | 1292 | |
43ad6e31 | 1293 | fd = safe_close(fd); |
3612fbc1 | 1294 | |
49e87292 | 1295 | done: |
4a62c710 MS |
1296 | if (stat(path, &st) < 0) |
1297 | return log_error_errno(errno, "stat(%s) failed: %m", path); | |
d4e9eb91 | 1298 | |
f44b28fd | 1299 | check_mode: |
d4e9eb91 DR |
1300 | if (!S_ISREG(st.st_mode)) { |
1301 | log_error("%s is not a file.", path); | |
1302 | return -EEXIST; | |
1303 | } | |
1304 | ||
b705ab6a | 1305 | r = path_set_perms(i, path); |
d4e9eb91 DR |
1306 | if (r < 0) |
1307 | return r; | |
1308 | ||
1309 | return 0; | |
1310 | } | |
1311 | ||
081043cf | 1312 | typedef int (*action_t)(Item *, const char *); |
936f6bdb | 1313 | typedef int (*fdaction_t)(Item *, int fd, const struct stat *st); |
081043cf | 1314 | |
936f6bdb FB |
1315 | static int item_do(Item *i, int fd, const struct stat *st, fdaction_t action) { |
1316 | int r = 0, q; | |
e73a03e0 LP |
1317 | |
1318 | assert(i); | |
936f6bdb FB |
1319 | assert(fd >= 0); |
1320 | assert(st); | |
a8d88783 MS |
1321 | |
1322 | /* This returns the first error we run into, but nevertheless | |
1323 | * tries to go on */ | |
936f6bdb | 1324 | r = action(i, fd, st); |
a8d88783 | 1325 | |
936f6bdb FB |
1326 | if (S_ISDIR(st->st_mode)) { |
1327 | char procfs_path[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; | |
1328 | _cleanup_closedir_ DIR *d = NULL; | |
1329 | struct dirent *de; | |
a8d88783 | 1330 | |
936f6bdb FB |
1331 | /* The passed 'fd' was opened with O_PATH. We need to convert |
1332 | * it into a 'regular' fd before reading the directory content. */ | |
1333 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); | |
a8d88783 | 1334 | |
936f6bdb FB |
1335 | d = opendir(procfs_path); |
1336 | if (!d) { | |
1337 | r = r ?: -errno; | |
1338 | goto finish; | |
1339 | } | |
a8d88783 | 1340 | |
936f6bdb FB |
1341 | FOREACH_DIRENT_ALL(de, d, q = -errno; goto finish) { |
1342 | struct stat de_st; | |
1343 | int de_fd; | |
a8d88783 | 1344 | |
936f6bdb FB |
1345 | if (dot_or_dot_dot(de->d_name)) |
1346 | continue; | |
1347 | ||
1348 | de_fd = openat(fd, de->d_name, O_NOFOLLOW|O_CLOEXEC|O_PATH); | |
1349 | if (de_fd >= 0 && fstat(de_fd, &de_st) >= 0) | |
1350 | /* pass ownership of dirent fd over */ | |
1351 | q = item_do(i, de_fd, &de_st, action); | |
1352 | else | |
1353 | q = -errno; | |
a8d88783 | 1354 | |
e73a03e0 LP |
1355 | if (q < 0 && r == 0) |
1356 | r = q; | |
a8d88783 | 1357 | } |
a8d88783 | 1358 | } |
936f6bdb FB |
1359 | finish: |
1360 | safe_close(fd); | |
e73a03e0 | 1361 | return r; |
a8d88783 MS |
1362 | } |
1363 | ||
936f6bdb | 1364 | static int glob_item(Item *i, action_t action) { |
df99a9ef | 1365 | _cleanup_globfree_ glob_t g = { |
ebf31a1f | 1366 | .gl_opendir = (void *(*)(const char *)) opendir_nomod, |
df99a9ef | 1367 | }; |
e73a03e0 | 1368 | int r = 0, k; |
99e68c0b MS |
1369 | char **fn; |
1370 | ||
84e72b5e ZJS |
1371 | k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g); |
1372 | if (k < 0 && k != -ENOENT) | |
1373 | return log_error_errno(k, "glob(%s) failed: %m", i->path); | |
99e68c0b | 1374 | |
c84a9488 ZJS |
1375 | STRV_FOREACH(fn, g.gl_pathv) { |
1376 | k = action(i, *fn); | |
e73a03e0 | 1377 | if (k < 0 && r == 0) |
99e68c0b | 1378 | r = k; |
936f6bdb FB |
1379 | } |
1380 | ||
1381 | return r; | |
1382 | } | |
081043cf | 1383 | |
936f6bdb FB |
1384 | static int glob_item_recursively(Item *i, fdaction_t action) { |
1385 | _cleanup_globfree_ glob_t g = { | |
1386 | .gl_opendir = (void *(*)(const char *)) opendir_nomod, | |
1387 | }; | |
1388 | int r = 0, k; | |
1389 | char **fn; | |
1390 | ||
1391 | k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g); | |
1392 | if (k < 0 && k != -ENOENT) | |
1393 | return log_error_errno(k, "glob(%s) failed: %m", i->path); | |
1394 | ||
1395 | STRV_FOREACH(fn, g.gl_pathv) { | |
1396 | _cleanup_close_ int fd = -1; | |
1397 | struct stat st; | |
1398 | ||
1399 | /* Make sure we won't trigger/follow file object (such as | |
1400 | * device nodes, automounts, ...) pointed out by 'fn' with | |
1401 | * O_PATH. Note, when O_PATH is used, flags other than | |
1402 | * O_CLOEXEC, O_DIRECTORY, and O_NOFOLLOW are ignored. */ | |
1403 | ||
1404 | fd = open(*fn, O_CLOEXEC|O_NOFOLLOW|O_PATH); | |
1405 | if (fd < 0) { | |
1406 | r = r ?: -errno; | |
1407 | continue; | |
1408 | } | |
1409 | ||
1410 | if (fstat(fd, &st) < 0) { | |
1411 | r = r ?: -errno; | |
1412 | continue; | |
081043cf | 1413 | } |
936f6bdb FB |
1414 | |
1415 | k = item_do(i, fd, &st, action); | |
1416 | if (k < 0 && r == 0) | |
1417 | r = k; | |
1418 | ||
1419 | /* we passed fd ownership to the previous call */ | |
1420 | fd = -1; | |
c84a9488 | 1421 | } |
99e68c0b | 1422 | |
99e68c0b MS |
1423 | return r; |
1424 | } | |
1425 | ||
294929f8 ZJS |
1426 | typedef enum { |
1427 | CREATION_NORMAL, | |
1428 | CREATION_EXISTING, | |
1429 | CREATION_FORCE, | |
7a7d5db7 LP |
1430 | _CREATION_MODE_MAX, |
1431 | _CREATION_MODE_INVALID = -1 | |
294929f8 ZJS |
1432 | } CreationMode; |
1433 | ||
7a7d5db7 LP |
1434 | static const char *creation_mode_verb_table[_CREATION_MODE_MAX] = { |
1435 | [CREATION_NORMAL] = "Created", | |
1436 | [CREATION_EXISTING] = "Found existing", | |
1437 | [CREATION_FORCE] = "Created replacement", | |
1438 | }; | |
1439 | ||
1440 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb, CreationMode); | |
294929f8 | 1441 | |
3b63d2d3 | 1442 | static int create_item(Item *i) { |
3b63d2d3 | 1443 | struct stat st; |
df28bc08 | 1444 | int r = 0; |
114a17d2 | 1445 | int q = 0; |
294929f8 | 1446 | CreationMode creation; |
5008d581 | 1447 | |
3b63d2d3 | 1448 | assert(i); |
5008d581 | 1449 | |
582deb84 ZJS |
1450 | log_debug("Running create action for entry %c %s", (char) i->type, i->path); |
1451 | ||
3b63d2d3 LP |
1452 | switch (i->type) { |
1453 | ||
1454 | case IGNORE_PATH: | |
78a92a5a | 1455 | case IGNORE_DIRECTORY_PATH: |
3b63d2d3 LP |
1456 | case REMOVE_PATH: |
1457 | case RECURSIVE_REMOVE_PATH: | |
1458 | return 0; | |
5008d581 | 1459 | |
3b63d2d3 | 1460 | case CREATE_FILE: |
31ed59c5 | 1461 | case TRUNCATE_FILE: |
7fa10748 LP |
1462 | RUN_WITH_UMASK(0000) |
1463 | (void) mkdir_parents_label(i->path, 0755); | |
1464 | ||
1845fdd9 DR |
1465 | r = write_one_file(i, i->path); |
1466 | if (r < 0) | |
1467 | return r; | |
1468 | break; | |
265ffa1e | 1469 | |
5c5ccf12 | 1470 | case COPY_FILES: { |
7fa10748 LP |
1471 | |
1472 | RUN_WITH_UMASK(0000) | |
1473 | (void) mkdir_parents_label(i->path, 0755); | |
1474 | ||
4cef1923 | 1475 | log_debug("Copying tree \"%s\" to \"%s\".", i->argument, i->path); |
7fa10748 LP |
1476 | r = copy_tree(i->argument, i->path, |
1477 | i->uid_set ? i->uid : UID_INVALID, | |
1478 | i->gid_set ? i->gid : GID_INVALID, | |
1479 | COPY_REFLINK); | |
f44b28fd MO |
1480 | |
1481 | if (r == -EROFS && stat(i->path, &st) == 0) | |
1482 | r = -EEXIST; | |
1483 | ||
849958d1 | 1484 | if (r < 0) { |
e156347e LP |
1485 | struct stat a, b; |
1486 | ||
8d3d7072 MS |
1487 | if (r != -EEXIST) |
1488 | return log_error_errno(r, "Failed to copy files to %s: %m", i->path); | |
e156347e | 1489 | |
4cef1923 FB |
1490 | if (stat(i->argument, &a) < 0) |
1491 | return log_error_errno(errno, "stat(%s) failed: %m", i->argument); | |
e156347e | 1492 | |
4a62c710 MS |
1493 | if (stat(i->path, &b) < 0) |
1494 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); | |
e156347e LP |
1495 | |
1496 | if ((a.st_mode ^ b.st_mode) & S_IFMT) { | |
1497 | log_debug("Can't copy to %s, file exists already and is of different type", i->path); | |
1498 | return 0; | |
1499 | } | |
849958d1 LP |
1500 | } |
1501 | ||
b705ab6a | 1502 | r = path_set_perms(i, i->path); |
849958d1 LP |
1503 | if (r < 0) |
1504 | return r; | |
1505 | ||
1506 | break; | |
1507 | ||
d4e9eb91 | 1508 | case WRITE_FILE: |
936f6bdb | 1509 | r = glob_item(i, write_one_file); |
f05bc3f7 MS |
1510 | if (r < 0) |
1511 | return r; | |
5008d581 | 1512 | |
3b63d2d3 LP |
1513 | break; |
1514 | ||
3b63d2d3 | 1515 | case CREATE_DIRECTORY: |
d7b8eec7 LP |
1516 | case TRUNCATE_DIRECTORY: |
1517 | case CREATE_SUBVOLUME: | |
5fb13eb5 LP |
1518 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
1519 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
d7b8eec7 | 1520 | RUN_WITH_UMASK(0000) |
7fa10748 | 1521 | (void) mkdir_parents_label(i->path, 0755); |
d7b8eec7 | 1522 | |
5fb13eb5 | 1523 | if (IN_SET(i->type, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA)) { |
2904e949 LP |
1524 | |
1525 | if (btrfs_is_subvol(isempty(arg_root) ? "/" : arg_root) <= 0) | |
1526 | ||
1527 | /* Don't create a subvolume unless the | |
1528 | * root directory is one, too. We do | |
1529 | * this under the assumption that if | |
1530 | * the root directory is just a plain | |
1531 | * directory (i.e. very light-weight), | |
1532 | * we shouldn't try to split it up | |
1533 | * into subvolumes (i.e. more | |
1534 | * heavy-weight). Thus, chroot() | |
1535 | * environments and suchlike will get | |
1536 | * a full brtfs subvolume set up below | |
1537 | * their tree only if they | |
1538 | * specifically set up a btrfs | |
1539 | * subvolume for the root dir too. */ | |
1540 | ||
1541 | r = -ENOTTY; | |
1542 | else { | |
1543 | RUN_WITH_UMASK((~i->mode) & 0777) | |
1544 | r = btrfs_subvol_make(i->path); | |
1545 | } | |
5fb13eb5 | 1546 | } else |
d7b8eec7 LP |
1547 | r = 0; |
1548 | ||
582deb84 | 1549 | if (IN_SET(i->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY) || r == -ENOTTY) |
d7b8eec7 LP |
1550 | RUN_WITH_UMASK(0000) |
1551 | r = mkdir_label(i->path, i->mode); | |
5008d581 | 1552 | |
e156347e | 1553 | if (r < 0) { |
7b135a73 | 1554 | int k; |
5008d581 | 1555 | |
4c701096 | 1556 | if (!IN_SET(r, -EEXIST, -EROFS)) |
7b135a73 | 1557 | return log_error_errno(r, "Failed to create directory or subvolume \"%s\": %m", i->path); |
5008d581 | 1558 | |
7b135a73 LP |
1559 | k = is_dir(i->path, false); |
1560 | if (k == -ENOENT && r == -EROFS) | |
1561 | return log_error_errno(r, "%s does not exist and cannot be created as the file system is read-only.", i->path); | |
1562 | if (k < 0) | |
1563 | return log_error_errno(k, "Failed to check if %s exists: %m", i->path); | |
1564 | if (!k) { | |
1565 | log_warning("\"%s\" already exists and is not a directory.", i->path); | |
e156347e LP |
1566 | return 0; |
1567 | } | |
294929f8 ZJS |
1568 | |
1569 | creation = CREATION_EXISTING; | |
1570 | } else | |
1571 | creation = CREATION_NORMAL; | |
7b135a73 | 1572 | |
7a7d5db7 | 1573 | log_debug("%s directory \"%s\".", creation_mode_verb_to_string(creation), i->path); |
5008d581 | 1574 | |
5fb13eb5 LP |
1575 | if (IN_SET(i->type, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)) { |
1576 | r = btrfs_subvol_auto_qgroup(i->path, 0, i->type == CREATE_SUBVOLUME_NEW_QUOTA); | |
114a17d2 | 1577 | if (r == -ENOTTY) |
022ffe4c | 1578 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (unsupported fs or dir not a subvolume): %m", i->path); |
114a17d2 | 1579 | else if (r == -EROFS) |
022ffe4c | 1580 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (fs is read-only).", i->path); |
114a17d2 | 1581 | else if (r == -ENOPROTOOPT) |
022ffe4c | 1582 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (quota support is disabled).", i->path); |
114a17d2 EV |
1583 | else if (r < 0) |
1584 | q = log_error_errno(r, "Failed to adjust quota for subvolume \"%s\": %m", i->path); | |
1585 | else if (r > 0) | |
5fb13eb5 | 1586 | log_debug("Adjusted quota for subvolume \"%s\".", i->path); |
114a17d2 | 1587 | else if (r == 0) |
5fb13eb5 LP |
1588 | log_debug("Quota for subvolume \"%s\" already in place, no change made.", i->path); |
1589 | } | |
1590 | ||
4831981d | 1591 | _fallthrough_; |
df8dee85 | 1592 | case EMPTY_DIRECTORY: |
b705ab6a | 1593 | r = path_set_perms(i, i->path); |
114a17d2 EV |
1594 | if (q < 0) |
1595 | return q; | |
f05bc3f7 MS |
1596 | if (r < 0) |
1597 | return r; | |
3b63d2d3 LP |
1598 | |
1599 | break; | |
ee17ee7c LP |
1600 | |
1601 | case CREATE_FIFO: | |
5c0d398d | 1602 | RUN_WITH_UMASK(0000) { |
7fa10748 LP |
1603 | (void) mkdir_parents_label(i->path, 0755); |
1604 | ||
ecabcf8b | 1605 | mac_selinux_create_file_prepare(i->path, S_IFIFO); |
5c0d398d | 1606 | r = mkfifo(i->path, i->mode); |
ecabcf8b | 1607 | mac_selinux_create_file_clear(); |
5c0d398d | 1608 | } |
ee17ee7c | 1609 | |
1554afae | 1610 | if (r < 0) { |
4a62c710 MS |
1611 | if (errno != EEXIST) |
1612 | return log_error_errno(errno, "Failed to create fifo %s: %m", i->path); | |
ee17ee7c | 1613 | |
a542c4dc | 1614 | if (lstat(i->path, &st) < 0) |
4a62c710 | 1615 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); |
ee17ee7c | 1616 | |
1554afae LP |
1617 | if (!S_ISFIFO(st.st_mode)) { |
1618 | ||
1619 | if (i->force) { | |
1554afae | 1620 | RUN_WITH_UMASK(0000) { |
ecabcf8b | 1621 | mac_selinux_create_file_prepare(i->path, S_IFIFO); |
1554afae | 1622 | r = mkfifo_atomic(i->path, i->mode); |
ecabcf8b | 1623 | mac_selinux_create_file_clear(); |
1554afae LP |
1624 | } |
1625 | ||
f647962d MS |
1626 | if (r < 0) |
1627 | return log_error_errno(r, "Failed to create fifo %s: %m", i->path); | |
294929f8 | 1628 | creation = CREATION_FORCE; |
1554afae | 1629 | } else { |
a542c4dc | 1630 | log_warning("\"%s\" already exists and is not a fifo.", i->path); |
1554afae LP |
1631 | return 0; |
1632 | } | |
294929f8 ZJS |
1633 | } else |
1634 | creation = CREATION_EXISTING; | |
1635 | } else | |
1636 | creation = CREATION_NORMAL; | |
7a7d5db7 | 1637 | log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation), i->path); |
ee17ee7c | 1638 | |
b705ab6a | 1639 | r = path_set_perms(i, i->path); |
f05bc3f7 MS |
1640 | if (r < 0) |
1641 | return r; | |
ee17ee7c LP |
1642 | |
1643 | break; | |
5c5ccf12 | 1644 | } |
a8d88783 | 1645 | |
5c5ccf12 | 1646 | case CREATE_SYMLINK: { |
7fa10748 LP |
1647 | RUN_WITH_UMASK(0000) |
1648 | (void) mkdir_parents_label(i->path, 0755); | |
1649 | ||
ecabcf8b | 1650 | mac_selinux_create_file_prepare(i->path, S_IFLNK); |
4cef1923 | 1651 | r = symlink(i->argument, i->path); |
ecabcf8b | 1652 | mac_selinux_create_file_clear(); |
e9a5ef7c | 1653 | |
468d726b | 1654 | if (r < 0) { |
2e78fa79 | 1655 | _cleanup_free_ char *x = NULL; |
468d726b | 1656 | |
4a62c710 | 1657 | if (errno != EEXIST) |
4cef1923 | 1658 | return log_error_errno(errno, "symlink(%s, %s) failed: %m", i->argument, i->path); |
2e78fa79 LP |
1659 | |
1660 | r = readlink_malloc(i->path, &x); | |
4cef1923 | 1661 | if (r < 0 || !streq(i->argument, x)) { |
2e78fa79 LP |
1662 | |
1663 | if (i->force) { | |
ecabcf8b | 1664 | mac_selinux_create_file_prepare(i->path, S_IFLNK); |
4cef1923 | 1665 | r = symlink_atomic(i->argument, i->path); |
ecabcf8b | 1666 | mac_selinux_create_file_clear(); |
2e78fa79 | 1667 | |
b3f5897f WD |
1668 | if (IN_SET(r, -EEXIST, -ENOTEMPTY)) { |
1669 | r = rm_rf(i->path, REMOVE_ROOT|REMOVE_PHYSICAL); | |
1670 | if (r < 0) | |
1671 | return log_error_errno(r, "rm -fr %s failed: %m", i->path); | |
1672 | ||
1673 | mac_selinux_create_file_prepare(i->path, S_IFLNK); | |
4cef1923 | 1674 | r = symlink(i->argument, i->path) < 0 ? -errno : 0; |
b3f5897f WD |
1675 | mac_selinux_create_file_clear(); |
1676 | } | |
f647962d | 1677 | if (r < 0) |
4cef1923 | 1678 | return log_error_errno(r, "symlink(%s, %s) failed: %m", i->argument, i->path); |
a542c4dc | 1679 | |
294929f8 | 1680 | creation = CREATION_FORCE; |
1554afae | 1681 | } else { |
582deb84 | 1682 | log_debug("\"%s\" is not a symlink or does not point to the correct path.", i->path); |
1554afae LP |
1683 | return 0; |
1684 | } | |
294929f8 ZJS |
1685 | } else |
1686 | creation = CREATION_EXISTING; | |
1687 | } else | |
a542c4dc | 1688 | |
294929f8 | 1689 | creation = CREATION_NORMAL; |
7a7d5db7 | 1690 | log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation), i->path); |
468d726b | 1691 | break; |
5c5ccf12 | 1692 | } |
468d726b LP |
1693 | |
1694 | case CREATE_BLOCK_DEVICE: | |
1695 | case CREATE_CHAR_DEVICE: { | |
cb7ed9df LP |
1696 | mode_t file_type; |
1697 | ||
1698 | if (have_effective_cap(CAP_MKNOD) == 0) { | |
1699 | /* In a container we lack CAP_MKNOD. We | |
ab06eef8 | 1700 | shouldn't attempt to create the device node in |
cb7ed9df LP |
1701 | that case to avoid noise, and we don't support |
1702 | virtualized devices in containers anyway. */ | |
1703 | ||
1704 | log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path); | |
1705 | return 0; | |
1706 | } | |
1707 | ||
7fa10748 LP |
1708 | RUN_WITH_UMASK(0000) |
1709 | (void) mkdir_parents_label(i->path, 0755); | |
1710 | ||
1554afae | 1711 | file_type = i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR; |
468d726b | 1712 | |
5c0d398d | 1713 | RUN_WITH_UMASK(0000) { |
ecabcf8b | 1714 | mac_selinux_create_file_prepare(i->path, file_type); |
5c0d398d | 1715 | r = mknod(i->path, i->mode | file_type, i->major_minor); |
ecabcf8b | 1716 | mac_selinux_create_file_clear(); |
5c0d398d | 1717 | } |
468d726b | 1718 | |
6555ad8e KS |
1719 | if (r < 0) { |
1720 | if (errno == EPERM) { | |
1721 | log_debug("We lack permissions, possibly because of cgroup configuration; " | |
1722 | "skipping creation of device node %s.", i->path); | |
1723 | return 0; | |
1724 | } | |
1725 | ||
4a62c710 MS |
1726 | if (errno != EEXIST) |
1727 | return log_error_errno(errno, "Failed to create device node %s: %m", i->path); | |
468d726b | 1728 | |
a542c4dc | 1729 | if (lstat(i->path, &st) < 0) |
4a62c710 | 1730 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); |
468d726b | 1731 | |
1554afae LP |
1732 | if ((st.st_mode & S_IFMT) != file_type) { |
1733 | ||
1734 | if (i->force) { | |
1735 | ||
1736 | RUN_WITH_UMASK(0000) { | |
ecabcf8b | 1737 | mac_selinux_create_file_prepare(i->path, file_type); |
1554afae | 1738 | r = mknod_atomic(i->path, i->mode | file_type, i->major_minor); |
ecabcf8b | 1739 | mac_selinux_create_file_clear(); |
1554afae LP |
1740 | } |
1741 | ||
f647962d | 1742 | if (r < 0) |
294929f8 ZJS |
1743 | return log_error_errno(r, "Failed to create device node \"%s\": %m", i->path); |
1744 | creation = CREATION_FORCE; | |
1554afae LP |
1745 | } else { |
1746 | log_debug("%s is not a device node.", i->path); | |
1747 | return 0; | |
1748 | } | |
294929f8 ZJS |
1749 | } else |
1750 | creation = CREATION_EXISTING; | |
1751 | } else | |
1752 | creation = CREATION_NORMAL; | |
a542c4dc | 1753 | |
294929f8 | 1754 | log_debug("%s %s device node \"%s\" %u:%u.", |
7a7d5db7 | 1755 | creation_mode_verb_to_string(creation), |
582deb84 ZJS |
1756 | i->type == CREATE_BLOCK_DEVICE ? "block" : "char", |
1757 | i->path, major(i->mode), minor(i->mode)); | |
468d726b | 1758 | |
b705ab6a | 1759 | r = path_set_perms(i, i->path); |
468d726b LP |
1760 | if (r < 0) |
1761 | return r; | |
1762 | ||
1763 | break; | |
1764 | } | |
1765 | ||
e73a03e0 | 1766 | case ADJUST_MODE: |
777b87e7 | 1767 | case RELABEL_PATH: |
936f6bdb | 1768 | r = glob_item(i, path_set_perms); |
777b87e7 | 1769 | if (r < 0) |
96ca8194 | 1770 | return r; |
777b87e7 MS |
1771 | break; |
1772 | ||
a8d88783 | 1773 | case RECURSIVE_RELABEL_PATH: |
936f6bdb | 1774 | r = glob_item_recursively(i, fd_set_perms); |
a8d88783 MS |
1775 | if (r < 0) |
1776 | return r; | |
ebf4e801 | 1777 | break; |
e73a03e0 | 1778 | |
ebf4e801 | 1779 | case SET_XATTR: |
936f6bdb | 1780 | r = glob_item(i, path_set_xattrs); |
b705ab6a ZJS |
1781 | if (r < 0) |
1782 | return r; | |
1783 | break; | |
1784 | ||
1785 | case RECURSIVE_SET_XATTR: | |
936f6bdb | 1786 | r = glob_item_recursively(i, fd_set_xattrs); |
ebf4e801 MW |
1787 | if (r < 0) |
1788 | return r; | |
e73a03e0 | 1789 | break; |
f8eeeaf9 ZJS |
1790 | |
1791 | case SET_ACL: | |
936f6bdb | 1792 | r = glob_item(i, path_set_acls); |
f8eeeaf9 ZJS |
1793 | if (r < 0) |
1794 | return r; | |
b705ab6a ZJS |
1795 | break; |
1796 | ||
1797 | case RECURSIVE_SET_ACL: | |
936f6bdb | 1798 | r = glob_item_recursively(i, fd_set_acls); |
b705ab6a ZJS |
1799 | if (r < 0) |
1800 | return r; | |
1801 | break; | |
22c3a6ca | 1802 | |
88ec4dfa | 1803 | case SET_ATTRIBUTE: |
936f6bdb | 1804 | r = glob_item(i, path_set_attribute); |
22c3a6ca GB |
1805 | if (r < 0) |
1806 | return r; | |
1807 | break; | |
1808 | ||
88ec4dfa | 1809 | case RECURSIVE_SET_ATTRIBUTE: |
936f6bdb | 1810 | r = glob_item_recursively(i, fd_set_attribute); |
22c3a6ca GB |
1811 | if (r < 0) |
1812 | return r; | |
1813 | break; | |
3b63d2d3 LP |
1814 | } |
1815 | ||
f05bc3f7 | 1816 | return 0; |
3b63d2d3 LP |
1817 | } |
1818 | ||
a0896123 | 1819 | static int remove_item_instance(Item *i, const char *instance) { |
3b63d2d3 LP |
1820 | int r; |
1821 | ||
1822 | assert(i); | |
1823 | ||
1824 | switch (i->type) { | |
1825 | ||
3b63d2d3 | 1826 | case REMOVE_PATH: |
4a62c710 | 1827 | if (remove(instance) < 0 && errno != ENOENT) |
3f93da98 | 1828 | return log_error_errno(errno, "rm(%s): %m", instance); |
3b63d2d3 LP |
1829 | |
1830 | break; | |
1831 | ||
1832 | case TRUNCATE_DIRECTORY: | |
1833 | case RECURSIVE_REMOVE_PATH: | |
d139b24a LP |
1834 | /* FIXME: we probably should use dir_cleanup() here |
1835 | * instead of rm_rf() so that 'x' is honoured. */ | |
582deb84 | 1836 | log_debug("rm -rf \"%s\"", instance); |
1b26f09e | 1837 | r = rm_rf(instance, (i->type == RECURSIVE_REMOVE_PATH ? REMOVE_ROOT|REMOVE_SUBVOLUME : 0) | REMOVE_PHYSICAL); |
f647962d MS |
1838 | if (r < 0 && r != -ENOENT) |
1839 | return log_error_errno(r, "rm_rf(%s): %m", instance); | |
3b63d2d3 LP |
1840 | |
1841 | break; | |
7fcb4b9b ZJS |
1842 | |
1843 | default: | |
1844 | assert_not_reached("wut?"); | |
3b63d2d3 LP |
1845 | } |
1846 | ||
1847 | return 0; | |
1848 | } | |
1849 | ||
a0896123 | 1850 | static int remove_item(Item *i) { |
b8bb3e8f LP |
1851 | assert(i); |
1852 | ||
582deb84 ZJS |
1853 | log_debug("Running remove action for entry %c %s", (char) i->type, i->path); |
1854 | ||
b8bb3e8f LP |
1855 | switch (i->type) { |
1856 | ||
b8bb3e8f LP |
1857 | case REMOVE_PATH: |
1858 | case TRUNCATE_DIRECTORY: | |
99e68c0b | 1859 | case RECURSIVE_REMOVE_PATH: |
936f6bdb | 1860 | return glob_item(i, remove_item_instance); |
b8bb3e8f | 1861 | |
df8dee85 ZJS |
1862 | default: |
1863 | return 0; | |
1864 | } | |
b8bb3e8f LP |
1865 | } |
1866 | ||
78a92a5a | 1867 | static int clean_item_instance(Item *i, const char* instance) { |
7fd1b19b | 1868 | _cleanup_closedir_ DIR *d = NULL; |
78a92a5a MS |
1869 | struct stat s, ps; |
1870 | bool mountpoint; | |
78a92a5a | 1871 | usec_t cutoff, n; |
582deb84 | 1872 | char timestamp[FORMAT_TIMESTAMP_MAX]; |
78a92a5a MS |
1873 | |
1874 | assert(i); | |
1875 | ||
1876 | if (!i->age_set) | |
1877 | return 0; | |
1878 | ||
1879 | n = now(CLOCK_REALTIME); | |
1880 | if (n < i->age) | |
1881 | return 0; | |
1882 | ||
1883 | cutoff = n - i->age; | |
1884 | ||
df99a9ef | 1885 | d = opendir_nomod(instance); |
78a92a5a | 1886 | if (!d) { |
d710aaf7 | 1887 | if (IN_SET(errno, ENOENT, ENOTDIR)) { |
582deb84 | 1888 | log_debug_errno(errno, "Directory \"%s\": %m", instance); |
78a92a5a | 1889 | return 0; |
582deb84 | 1890 | } |
78a92a5a | 1891 | |
d710aaf7 | 1892 | return log_error_errno(errno, "Failed to open directory %s: %m", instance); |
78a92a5a MS |
1893 | } |
1894 | ||
4a62c710 MS |
1895 | if (fstat(dirfd(d), &s) < 0) |
1896 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); | |
78a92a5a MS |
1897 | |
1898 | if (!S_ISDIR(s.st_mode)) { | |
1899 | log_error("%s is not a directory.", i->path); | |
19fbec19 | 1900 | return -ENOTDIR; |
78a92a5a MS |
1901 | } |
1902 | ||
4a62c710 MS |
1903 | if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) |
1904 | return log_error_errno(errno, "stat(%s/..) failed: %m", i->path); | |
78a92a5a | 1905 | |
2bb158c1 | 1906 | mountpoint = s.st_dev != ps.st_dev || s.st_ino == ps.st_ino; |
78a92a5a | 1907 | |
582deb84 ZJS |
1908 | log_debug("Cleanup threshold for %s \"%s\" is %s", |
1909 | mountpoint ? "mount point" : "directory", | |
1910 | instance, | |
1911 | format_timestamp_us(timestamp, sizeof(timestamp), cutoff)); | |
1912 | ||
1913 | return dir_cleanup(i, instance, d, &s, cutoff, s.st_dev, mountpoint, | |
1914 | MAX_DEPTH, i->keep_first_level); | |
78a92a5a MS |
1915 | } |
1916 | ||
1917 | static int clean_item(Item *i) { | |
78a92a5a MS |
1918 | assert(i); |
1919 | ||
582deb84 ZJS |
1920 | log_debug("Running clean action for entry %c %s", (char) i->type, i->path); |
1921 | ||
78a92a5a MS |
1922 | switch (i->type) { |
1923 | case CREATE_DIRECTORY: | |
d7b8eec7 | 1924 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
1925 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
1926 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
78a92a5a MS |
1927 | case TRUNCATE_DIRECTORY: |
1928 | case IGNORE_PATH: | |
849958d1 | 1929 | case COPY_FILES: |
78a92a5a | 1930 | clean_item_instance(i, i->path); |
df8dee85 | 1931 | return 0; |
65241c14 | 1932 | case EMPTY_DIRECTORY: |
78a92a5a | 1933 | case IGNORE_DIRECTORY_PATH: |
936f6bdb | 1934 | return glob_item(i, clean_item_instance); |
78a92a5a | 1935 | default: |
df8dee85 | 1936 | return 0; |
78a92a5a | 1937 | } |
78a92a5a MS |
1938 | } |
1939 | ||
3f93da98 ZJS |
1940 | static int process_item_array(ItemArray *array); |
1941 | ||
3b63d2d3 | 1942 | static int process_item(Item *i) { |
1e95893a | 1943 | int r, q, p, t = 0; |
9348f0e6 | 1944 | _cleanup_free_ char *prefix = NULL; |
3b63d2d3 LP |
1945 | |
1946 | assert(i); | |
1947 | ||
1910cd0e LP |
1948 | if (i->done) |
1949 | return 0; | |
1950 | ||
1951 | i->done = true; | |
1952 | ||
9348f0e6 ZJS |
1953 | prefix = malloc(strlen(i->path) + 1); |
1954 | if (!prefix) | |
1955 | return log_oom(); | |
1956 | ||
1910cd0e | 1957 | PATH_FOREACH_PREFIX(prefix, i->path) { |
3f93da98 | 1958 | ItemArray *j; |
1910cd0e | 1959 | |
ef43a391 | 1960 | j = ordered_hashmap_get(items, prefix); |
1db50423 ZJS |
1961 | if (j) { |
1962 | int s; | |
1963 | ||
3f93da98 | 1964 | s = process_item_array(j); |
1db50423 ZJS |
1965 | if (s < 0 && t == 0) |
1966 | t = s; | |
1967 | } | |
1910cd0e LP |
1968 | } |
1969 | ||
655f2da0 N |
1970 | if (chase_symlinks(i->path, NULL, CHASE_NO_AUTOFS, NULL) == -EREMOTE) |
1971 | return t; | |
1972 | ||
3b63d2d3 | 1973 | r = arg_create ? create_item(i) : 0; |
a0896123 | 1974 | q = arg_remove ? remove_item(i) : 0; |
3b63d2d3 LP |
1975 | p = arg_clean ? clean_item(i) : 0; |
1976 | ||
1db50423 ZJS |
1977 | return t < 0 ? t : |
1978 | r < 0 ? r : | |
1979 | q < 0 ? q : | |
1980 | p; | |
3b63d2d3 LP |
1981 | } |
1982 | ||
3f93da98 ZJS |
1983 | static int process_item_array(ItemArray *array) { |
1984 | unsigned n; | |
1985 | int r = 0, k; | |
753615e8 | 1986 | |
3f93da98 ZJS |
1987 | assert(array); |
1988 | ||
1989 | for (n = 0; n < array->count; n++) { | |
1990 | k = process_item(array->items + n); | |
1991 | if (k < 0 && r == 0) | |
1992 | r = k; | |
1993 | } | |
1994 | ||
1995 | return r; | |
1996 | } | |
3b63d2d3 | 1997 | |
3f93da98 ZJS |
1998 | static void item_free_contents(Item *i) { |
1999 | assert(i); | |
3b63d2d3 | 2000 | free(i->path); |
468d726b | 2001 | free(i->argument); |
ebf4e801 | 2002 | strv_free(i->xattrs); |
f8eeeaf9 | 2003 | |
349cc4a5 | 2004 | #if HAVE_ACL |
f8eeeaf9 ZJS |
2005 | acl_free(i->acl_access); |
2006 | acl_free(i->acl_default); | |
2007 | #endif | |
3b63d2d3 LP |
2008 | } |
2009 | ||
3f93da98 ZJS |
2010 | static void item_array_free(ItemArray *a) { |
2011 | unsigned n; | |
2012 | ||
2013 | if (!a) | |
2014 | return; | |
2015 | ||
2016 | for (n = 0; n < a->count; n++) | |
2017 | item_free_contents(a->items + n); | |
2018 | free(a->items); | |
2019 | free(a); | |
2020 | } | |
e2f2fb78 | 2021 | |
17493fa5 LP |
2022 | static int item_compare(const void *a, const void *b) { |
2023 | const Item *x = a, *y = b; | |
2024 | ||
2025 | /* Make sure that the ownership taking item is put first, so | |
2026 | * that we first create the node, and then can adjust it */ | |
2027 | ||
2028 | if (takes_ownership(x->type) && !takes_ownership(y->type)) | |
2029 | return -1; | |
2030 | if (!takes_ownership(x->type) && takes_ownership(y->type)) | |
2031 | return 1; | |
2032 | ||
2033 | return (int) x->type - (int) y->type; | |
2034 | } | |
2035 | ||
3f93da98 | 2036 | static bool item_compatible(Item *a, Item *b) { |
bfe95f35 LP |
2037 | assert(a); |
2038 | assert(b); | |
3f93da98 | 2039 | assert(streq(a->path, b->path)); |
bfe95f35 | 2040 | |
3f93da98 ZJS |
2041 | if (takes_ownership(a->type) && takes_ownership(b->type)) |
2042 | /* check if the items are the same */ | |
2043 | return streq_ptr(a->argument, b->argument) && | |
bfe95f35 | 2044 | |
3f93da98 ZJS |
2045 | a->uid_set == b->uid_set && |
2046 | a->uid == b->uid && | |
bfe95f35 | 2047 | |
3f93da98 ZJS |
2048 | a->gid_set == b->gid_set && |
2049 | a->gid == b->gid && | |
bfe95f35 | 2050 | |
3f93da98 ZJS |
2051 | a->mode_set == b->mode_set && |
2052 | a->mode == b->mode && | |
bfe95f35 | 2053 | |
3f93da98 ZJS |
2054 | a->age_set == b->age_set && |
2055 | a->age == b->age && | |
bfe95f35 | 2056 | |
3f93da98 | 2057 | a->mask_perms == b->mask_perms && |
bfe95f35 | 2058 | |
3f93da98 | 2059 | a->keep_first_level == b->keep_first_level && |
468d726b | 2060 | |
3f93da98 | 2061 | a->major_minor == b->major_minor; |
468d726b | 2062 | |
bfe95f35 LP |
2063 | return true; |
2064 | } | |
2065 | ||
a2aced4a DR |
2066 | static bool should_include_path(const char *path) { |
2067 | char **prefix; | |
2068 | ||
abef3f91 | 2069 | STRV_FOREACH(prefix, arg_exclude_prefixes) |
582deb84 ZJS |
2070 | if (path_startswith(path, *prefix)) { |
2071 | log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.", | |
2072 | path, *prefix); | |
5c795114 | 2073 | return false; |
582deb84 | 2074 | } |
a2aced4a | 2075 | |
abef3f91 | 2076 | STRV_FOREACH(prefix, arg_include_prefixes) |
582deb84 ZJS |
2077 | if (path_startswith(path, *prefix)) { |
2078 | log_debug("Entry \"%s\" matches include prefix \"%s\".", path, *prefix); | |
a2aced4a | 2079 | return true; |
582deb84 | 2080 | } |
a2aced4a | 2081 | |
5c795114 DR |
2082 | /* no matches, so we should include this path only if we |
2083 | * have no whitelist at all */ | |
7b943bb7 | 2084 | if (strv_isempty(arg_include_prefixes)) |
582deb84 ZJS |
2085 | return true; |
2086 | ||
2087 | log_debug("Entry \"%s\" does not match any include prefix, skipping.", path); | |
2088 | return false; | |
a2aced4a DR |
2089 | } |
2090 | ||
4cef1923 FB |
2091 | static int specifier_expansion_from_arg(Item *i) { |
2092 | _cleanup_free_ char *unescaped = NULL, *resolved = NULL; | |
2093 | char **xattr; | |
2094 | int r; | |
2095 | ||
2096 | assert(i); | |
2097 | ||
2098 | if (i->argument == NULL) | |
2099 | return 0; | |
2100 | ||
2101 | switch (i->type) { | |
2102 | case COPY_FILES: | |
2103 | case CREATE_SYMLINK: | |
2104 | case CREATE_FILE: | |
2105 | case TRUNCATE_FILE: | |
2106 | case WRITE_FILE: | |
2107 | r = cunescape(i->argument, 0, &unescaped); | |
2108 | if (r < 0) | |
2109 | return log_error_errno(r, "Failed to unescape parameter to write: %s", i->argument); | |
2110 | ||
2111 | r = specifier_printf(unescaped, specifier_table, NULL, &resolved); | |
2112 | if (r < 0) | |
2113 | return r; | |
2114 | ||
2115 | free_and_replace(i->argument, resolved); | |
2116 | break; | |
2117 | ||
2118 | case SET_XATTR: | |
2119 | case RECURSIVE_SET_XATTR: | |
2120 | assert(i->xattrs); | |
2121 | ||
2122 | STRV_FOREACH (xattr, i->xattrs) { | |
2123 | r = specifier_printf(*xattr, specifier_table, NULL, &resolved); | |
2124 | if (r < 0) | |
2125 | return r; | |
2126 | ||
2127 | free_and_replace(*xattr, resolved); | |
2128 | } | |
2129 | break; | |
2130 | ||
2131 | default: | |
2132 | break; | |
2133 | } | |
2134 | return 0; | |
2135 | } | |
2136 | ||
d9daae55 | 2137 | static int parse_line(const char *fname, unsigned line, const char *buffer, bool *invalid_config) { |
1731e34a | 2138 | |
cde684a2 | 2139 | _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL; |
3f93da98 ZJS |
2140 | _cleanup_(item_free_contents) Item i = {}; |
2141 | ItemArray *existing; | |
ef43a391 | 2142 | OrderedHashmap *h; |
657cf7f4 | 2143 | int r, pos; |
5f255144 | 2144 | bool force = false, boot = false; |
3b63d2d3 LP |
2145 | |
2146 | assert(fname); | |
2147 | assert(line >= 1); | |
2148 | assert(buffer); | |
2149 | ||
68685607 | 2150 | r = extract_many_words( |
4034a06d | 2151 | &buffer, |
68685607 | 2152 | NULL, |
12ba2c44 | 2153 | EXTRACT_QUOTES, |
4034a06d LP |
2154 | &action, |
2155 | &path, | |
2156 | &mode, | |
2157 | &user, | |
2158 | &group, | |
2159 | &age, | |
2160 | NULL); | |
d9daae55 | 2161 | if (r < 0) { |
751223fe ZJS |
2162 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
2163 | /* invalid quoting and such or an unknown specifier */ | |
d9daae55 | 2164 | *invalid_config = true; |
657cf7f4 | 2165 | return log_error_errno(r, "[%s:%u] Failed to parse line: %m", fname, line); |
d9daae55 ZJS |
2166 | } |
2167 | ||
657cf7f4 | 2168 | else if (r < 2) { |
d9daae55 | 2169 | *invalid_config = true; |
3b63d2d3 | 2170 | log_error("[%s:%u] Syntax error.", fname, line); |
7f2c1f4d | 2171 | return -EIO; |
5008d581 LP |
2172 | } |
2173 | ||
aa5f6817 | 2174 | if (!isempty(buffer) && !streq(buffer, "-")) { |
4034a06d LP |
2175 | i.argument = strdup(buffer); |
2176 | if (!i.argument) | |
2177 | return log_oom(); | |
2178 | } | |
2179 | ||
2e78fa79 | 2180 | if (isempty(action)) { |
d9daae55 | 2181 | *invalid_config = true; |
2e78fa79 | 2182 | log_error("[%s:%u] Command too short '%s'.", fname, line, action); |
c4708f13 | 2183 | return -EINVAL; |
2e78fa79 LP |
2184 | } |
2185 | ||
5f255144 ZJS |
2186 | for (pos = 1; action[pos]; pos++) { |
2187 | if (action[pos] == '!' && !boot) | |
2188 | boot = true; | |
2189 | else if (action[pos] == '+' && !force) | |
2190 | force = true; | |
2191 | else { | |
d9daae55 | 2192 | *invalid_config = true; |
5f255144 ZJS |
2193 | log_error("[%s:%u] Unknown modifiers in command '%s'", |
2194 | fname, line, action); | |
2195 | return -EINVAL; | |
2196 | } | |
2e78fa79 LP |
2197 | } |
2198 | ||
582deb84 ZJS |
2199 | if (boot && !arg_boot) { |
2200 | log_debug("Ignoring entry %s \"%s\" because --boot is not specified.", | |
2201 | action, path); | |
c4708f13 | 2202 | return 0; |
582deb84 | 2203 | } |
c4708f13 | 2204 | |
3f93da98 ZJS |
2205 | i.type = action[0]; |
2206 | i.force = force; | |
2e78fa79 | 2207 | |
3f93da98 | 2208 | r = specifier_printf(path, specifier_table, NULL, &i.path); |
5a8575ef | 2209 | if (r == -ENXIO) |
4cef1923 | 2210 | return log_unresolvable_specifier(fname, line); |
d9daae55 | 2211 | if (r < 0) { |
751223fe ZJS |
2212 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
2213 | *invalid_config = true; | |
4cef1923 | 2214 | return log_error_errno(r, "[%s:%u] Failed to replace specifiers: %s", fname, line, path); |
d9daae55 | 2215 | } |
1731e34a | 2216 | |
3f93da98 | 2217 | switch (i.type) { |
468d726b | 2218 | |
777b87e7 | 2219 | case CREATE_DIRECTORY: |
d7b8eec7 | 2220 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
2221 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
2222 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
df8dee85 | 2223 | case EMPTY_DIRECTORY: |
777b87e7 MS |
2224 | case TRUNCATE_DIRECTORY: |
2225 | case CREATE_FIFO: | |
2226 | case IGNORE_PATH: | |
78a92a5a | 2227 | case IGNORE_DIRECTORY_PATH: |
777b87e7 MS |
2228 | case REMOVE_PATH: |
2229 | case RECURSIVE_REMOVE_PATH: | |
e73a03e0 | 2230 | case ADJUST_MODE: |
777b87e7 MS |
2231 | case RELABEL_PATH: |
2232 | case RECURSIVE_RELABEL_PATH: | |
c82500c6 | 2233 | if (i.argument) |
bd550f78 | 2234 | log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname, line, i.type); |
c82500c6 LP |
2235 | |
2236 | break; | |
2237 | ||
2238 | case CREATE_FILE: | |
2239 | case TRUNCATE_FILE: | |
777b87e7 | 2240 | break; |
468d726b LP |
2241 | |
2242 | case CREATE_SYMLINK: | |
3f93da98 ZJS |
2243 | if (!i.argument) { |
2244 | i.argument = strappend("/usr/share/factory/", i.path); | |
2245 | if (!i.argument) | |
2f3b873a | 2246 | return log_oom(); |
468d726b LP |
2247 | } |
2248 | break; | |
2249 | ||
31ed59c5 | 2250 | case WRITE_FILE: |
3f93da98 | 2251 | if (!i.argument) { |
d9daae55 | 2252 | *invalid_config = true; |
31ed59c5 | 2253 | log_error("[%s:%u] Write file requires argument.", fname, line); |
7f2c1f4d | 2254 | return -EBADMSG; |
31ed59c5 LP |
2255 | } |
2256 | break; | |
2257 | ||
849958d1 | 2258 | case COPY_FILES: |
3f93da98 ZJS |
2259 | if (!i.argument) { |
2260 | i.argument = strappend("/usr/share/factory/", i.path); | |
2261 | if (!i.argument) | |
2f3b873a | 2262 | return log_oom(); |
3f93da98 | 2263 | } else if (!path_is_absolute(i.argument)) { |
d9daae55 | 2264 | *invalid_config = true; |
849958d1 LP |
2265 | log_error("[%s:%u] Source path is not absolute.", fname, line); |
2266 | return -EBADMSG; | |
2267 | } | |
2268 | ||
3f93da98 | 2269 | path_kill_slashes(i.argument); |
849958d1 LP |
2270 | break; |
2271 | ||
468d726b LP |
2272 | case CREATE_CHAR_DEVICE: |
2273 | case CREATE_BLOCK_DEVICE: { | |
2274 | unsigned major, minor; | |
2275 | ||
3f93da98 | 2276 | if (!i.argument) { |
d9daae55 | 2277 | *invalid_config = true; |
468d726b | 2278 | log_error("[%s:%u] Device file requires argument.", fname, line); |
7f2c1f4d | 2279 | return -EBADMSG; |
468d726b LP |
2280 | } |
2281 | ||
3f93da98 | 2282 | if (sscanf(i.argument, "%u:%u", &major, &minor) != 2) { |
d9daae55 | 2283 | *invalid_config = true; |
3f93da98 | 2284 | log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname, line, i.argument); |
7f2c1f4d | 2285 | return -EBADMSG; |
468d726b LP |
2286 | } |
2287 | ||
3f93da98 | 2288 | i.major_minor = makedev(major, minor); |
468d726b LP |
2289 | break; |
2290 | } | |
2291 | ||
ebf4e801 | 2292 | case SET_XATTR: |
b705ab6a | 2293 | case RECURSIVE_SET_XATTR: |
3f93da98 | 2294 | if (!i.argument) { |
d9daae55 | 2295 | *invalid_config = true; |
ebf4e801 MW |
2296 | log_error("[%s:%u] Set extended attribute requires argument.", fname, line); |
2297 | return -EBADMSG; | |
2298 | } | |
bd550f78 | 2299 | r = parse_xattrs_from_arg(&i); |
ebf4e801 MW |
2300 | if (r < 0) |
2301 | return r; | |
2302 | break; | |
2303 | ||
f8eeeaf9 | 2304 | case SET_ACL: |
b705ab6a | 2305 | case RECURSIVE_SET_ACL: |
f8eeeaf9 | 2306 | if (!i.argument) { |
d9daae55 | 2307 | *invalid_config = true; |
f8eeeaf9 ZJS |
2308 | log_error("[%s:%u] Set ACLs requires argument.", fname, line); |
2309 | return -EBADMSG; | |
2310 | } | |
bd550f78 | 2311 | r = parse_acls_from_arg(&i); |
f8eeeaf9 ZJS |
2312 | if (r < 0) |
2313 | return r; | |
2314 | break; | |
2315 | ||
88ec4dfa LP |
2316 | case SET_ATTRIBUTE: |
2317 | case RECURSIVE_SET_ATTRIBUTE: | |
22c3a6ca | 2318 | if (!i.argument) { |
d9daae55 | 2319 | *invalid_config = true; |
88ec4dfa | 2320 | log_error("[%s:%u] Set file attribute requires argument.", fname, line); |
22c3a6ca GB |
2321 | return -EBADMSG; |
2322 | } | |
bd550f78 | 2323 | r = parse_attribute_from_arg(&i); |
751223fe | 2324 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
d9daae55 | 2325 | *invalid_config = true; |
22c3a6ca GB |
2326 | if (r < 0) |
2327 | return r; | |
2328 | break; | |
2329 | ||
777b87e7 | 2330 | default: |
582deb84 | 2331 | log_error("[%s:%u] Unknown command type '%c'.", fname, line, (char) i.type); |
d9daae55 | 2332 | *invalid_config = true; |
7f2c1f4d | 2333 | return -EBADMSG; |
3b63d2d3 | 2334 | } |
468d726b | 2335 | |
3f93da98 ZJS |
2336 | if (!path_is_absolute(i.path)) { |
2337 | log_error("[%s:%u] Path '%s' not absolute.", fname, line, i.path); | |
d9daae55 | 2338 | *invalid_config = true; |
7f2c1f4d | 2339 | return -EBADMSG; |
3b63d2d3 LP |
2340 | } |
2341 | ||
3f93da98 | 2342 | path_kill_slashes(i.path); |
3b63d2d3 | 2343 | |
3f93da98 | 2344 | if (!should_include_path(i.path)) |
7f2c1f4d | 2345 | return 0; |
5008d581 | 2346 | |
4cef1923 | 2347 | r = specifier_expansion_from_arg(&i); |
5a8575ef | 2348 | if (r == -ENXIO) |
4cef1923 | 2349 | return log_unresolvable_specifier(fname, line); |
751223fe ZJS |
2350 | if (r < 0) { |
2351 | if (IN_SET(r, -EINVAL, -EBADSLT)) | |
2352 | *invalid_config = true; | |
4cef1923 FB |
2353 | return log_error_errno(r, "[%s:%u] Failed to substitute specifiers in argument: %m", |
2354 | fname, line); | |
751223fe | 2355 | } |
4cef1923 | 2356 | |
cf9a4abd | 2357 | if (arg_root) { |
cde684a2 LP |
2358 | char *p; |
2359 | ||
1d13f648 | 2360 | p = prefix_root(arg_root, i.path); |
cf9a4abd MM |
2361 | if (!p) |
2362 | return log_oom(); | |
2363 | ||
3f93da98 ZJS |
2364 | free(i.path); |
2365 | i.path = p; | |
cf9a4abd MM |
2366 | } |
2367 | ||
90937fe3 | 2368 | if (!isempty(user) && !streq(user, "-")) { |
4b67834e LP |
2369 | const char *u = user; |
2370 | ||
3f93da98 | 2371 | r = get_user_creds(&u, &i.uid, NULL, NULL, NULL); |
4b67834e | 2372 | if (r < 0) { |
d9daae55 ZJS |
2373 | *invalid_config = true; |
2374 | return log_error_errno(r, "[%s:%u] Unknown user '%s'.", fname, line, user); | |
3b63d2d3 LP |
2375 | } |
2376 | ||
3f93da98 | 2377 | i.uid_set = true; |
3b63d2d3 LP |
2378 | } |
2379 | ||
90937fe3 | 2380 | if (!isempty(group) && !streq(group, "-")) { |
4b67834e LP |
2381 | const char *g = group; |
2382 | ||
3f93da98 | 2383 | r = get_group_creds(&g, &i.gid); |
4b67834e | 2384 | if (r < 0) { |
d9daae55 | 2385 | *invalid_config = true; |
3b63d2d3 | 2386 | log_error("[%s:%u] Unknown group '%s'.", fname, line, group); |
7f2c1f4d | 2387 | return r; |
3b63d2d3 LP |
2388 | } |
2389 | ||
3f93da98 | 2390 | i.gid_set = true; |
3b63d2d3 LP |
2391 | } |
2392 | ||
90937fe3 | 2393 | if (!isempty(mode) && !streq(mode, "-")) { |
abef3f91 | 2394 | const char *mm = mode; |
3b63d2d3 LP |
2395 | unsigned m; |
2396 | ||
abef3f91 | 2397 | if (*mm == '~') { |
3f93da98 | 2398 | i.mask_perms = true; |
abef3f91 LP |
2399 | mm++; |
2400 | } | |
2401 | ||
2ff7b0a5 | 2402 | if (parse_mode(mm, &m) < 0) { |
d9daae55 | 2403 | *invalid_config = true; |
3b63d2d3 | 2404 | log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode); |
2ff7b0a5 | 2405 | return -EBADMSG; |
3b63d2d3 LP |
2406 | } |
2407 | ||
3f93da98 ZJS |
2408 | i.mode = m; |
2409 | i.mode_set = true; | |
3b63d2d3 | 2410 | } else |
5fb13eb5 | 2411 | i.mode = IN_SET(i.type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA) ? 0755 : 0644; |
3b63d2d3 | 2412 | |
90937fe3 | 2413 | if (!isempty(age) && !streq(age, "-")) { |
24f3a374 LP |
2414 | const char *a = age; |
2415 | ||
2416 | if (*a == '~') { | |
3f93da98 | 2417 | i.keep_first_level = true; |
24f3a374 LP |
2418 | a++; |
2419 | } | |
2420 | ||
3f93da98 | 2421 | if (parse_sec(a, &i.age) < 0) { |
d9daae55 | 2422 | *invalid_config = true; |
3b63d2d3 | 2423 | log_error("[%s:%u] Invalid age '%s'.", fname, line, age); |
7f2c1f4d | 2424 | return -EBADMSG; |
3b63d2d3 LP |
2425 | } |
2426 | ||
3f93da98 | 2427 | i.age_set = true; |
3b63d2d3 LP |
2428 | } |
2429 | ||
3f93da98 | 2430 | h = needs_glob(i.type) ? globs : items; |
bfe95f35 | 2431 | |
ef43a391 | 2432 | existing = ordered_hashmap_get(h, i.path); |
468d726b | 2433 | if (existing) { |
3f93da98 ZJS |
2434 | unsigned n; |
2435 | ||
2436 | for (n = 0; n < existing->count; n++) { | |
6487ada8 | 2437 | if (!item_compatible(existing->items + n, &i)) { |
e286dbaf ZJS |
2438 | log_notice("[%s:%u] Duplicate line for path \"%s\", ignoring.", |
2439 | fname, line, i.path); | |
6487ada8 MP |
2440 | return 0; |
2441 | } | |
ebf4e801 MW |
2442 | } |
2443 | } else { | |
3f93da98 | 2444 | existing = new0(ItemArray, 1); |
07982ed1 LP |
2445 | if (!existing) |
2446 | return log_oom(); | |
2447 | ||
ef43a391 | 2448 | r = ordered_hashmap_put(h, i.path, existing); |
3f93da98 ZJS |
2449 | if (r < 0) |
2450 | return log_oom(); | |
bfe95f35 LP |
2451 | } |
2452 | ||
3f93da98 ZJS |
2453 | if (!GREEDY_REALLOC(existing->items, existing->size, existing->count + 1)) |
2454 | return log_oom(); | |
5008d581 | 2455 | |
3f93da98 | 2456 | memcpy(existing->items + existing->count++, &i, sizeof(i)); |
dd449aca ZJS |
2457 | |
2458 | /* Sort item array, to enforce stable ordering of application */ | |
2459 | qsort_safe(existing->items, existing->count, sizeof(Item), item_compare); | |
17493fa5 | 2460 | |
3f93da98 | 2461 | zero(i); |
7f2c1f4d | 2462 | return 0; |
5008d581 LP |
2463 | } |
2464 | ||
601185b4 | 2465 | static void help(void) { |
522d4a49 LP |
2466 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
2467 | "Creates, deletes and cleans up volatile and temporary files and directories.\n\n" | |
5c795114 | 2468 | " -h --help Show this help\n" |
f2b5ca0e | 2469 | " --user Execute user configuration\n" |
eb9da376 | 2470 | " --version Show package version\n" |
5c795114 DR |
2471 | " --create Create marked files/directories\n" |
2472 | " --clean Clean up marked directories\n" | |
2473 | " --remove Remove marked files/directories\n" | |
81815651 | 2474 | " --boot Execute actions only safe at boot\n" |
79ca888f ZJS |
2475 | " --prefix=PATH Only apply rules with the specified prefix\n" |
2476 | " --exclude-prefix=PATH Ignore rules with the specified prefix\n" | |
d9daae55 | 2477 | " --root=PATH Operate on an alternate filesystem root\n" |
a6d8474f | 2478 | " --replace=PATH Treat arguments as replacement for PATH\n" |
d9daae55 | 2479 | , program_invocation_short_name); |
3b63d2d3 LP |
2480 | } |
2481 | ||
2482 | static int parse_argv(int argc, char *argv[]) { | |
2483 | ||
2484 | enum { | |
eb9da376 | 2485 | ARG_VERSION = 0x100, |
f2b5ca0e | 2486 | ARG_USER, |
3b63d2d3 LP |
2487 | ARG_CREATE, |
2488 | ARG_CLEAN, | |
fba6e687 | 2489 | ARG_REMOVE, |
81815651 | 2490 | ARG_BOOT, |
5c795114 DR |
2491 | ARG_PREFIX, |
2492 | ARG_EXCLUDE_PREFIX, | |
cf9a4abd | 2493 | ARG_ROOT, |
a6d8474f | 2494 | ARG_REPLACE, |
3b63d2d3 LP |
2495 | }; |
2496 | ||
2497 | static const struct option options[] = { | |
5c795114 | 2498 | { "help", no_argument, NULL, 'h' }, |
f2b5ca0e | 2499 | { "user", no_argument, NULL, ARG_USER }, |
eb9da376 | 2500 | { "version", no_argument, NULL, ARG_VERSION }, |
5c795114 DR |
2501 | { "create", no_argument, NULL, ARG_CREATE }, |
2502 | { "clean", no_argument, NULL, ARG_CLEAN }, | |
2503 | { "remove", no_argument, NULL, ARG_REMOVE }, | |
81815651 | 2504 | { "boot", no_argument, NULL, ARG_BOOT }, |
5c795114 DR |
2505 | { "prefix", required_argument, NULL, ARG_PREFIX }, |
2506 | { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX }, | |
cf9a4abd | 2507 | { "root", required_argument, NULL, ARG_ROOT }, |
a6d8474f | 2508 | { "replace", required_argument, NULL, ARG_REPLACE }, |
eb9da376 | 2509 | {} |
3b63d2d3 LP |
2510 | }; |
2511 | ||
0f474365 | 2512 | int c, r; |
3b63d2d3 LP |
2513 | |
2514 | assert(argc >= 0); | |
2515 | assert(argv); | |
2516 | ||
601185b4 | 2517 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
3b63d2d3 LP |
2518 | |
2519 | switch (c) { | |
2520 | ||
2521 | case 'h': | |
601185b4 ZJS |
2522 | help(); |
2523 | return 0; | |
eb9da376 LP |
2524 | |
2525 | case ARG_VERSION: | |
3f6fd1ba | 2526 | return version(); |
3b63d2d3 | 2527 | |
f2b5ca0e ZJS |
2528 | case ARG_USER: |
2529 | arg_user = true; | |
2530 | break; | |
2531 | ||
3b63d2d3 LP |
2532 | case ARG_CREATE: |
2533 | arg_create = true; | |
2534 | break; | |
2535 | ||
2536 | case ARG_CLEAN: | |
2537 | arg_clean = true; | |
2538 | break; | |
2539 | ||
2540 | case ARG_REMOVE: | |
2541 | arg_remove = true; | |
2542 | break; | |
2543 | ||
81815651 ZJS |
2544 | case ARG_BOOT: |
2545 | arg_boot = true; | |
c4708f13 ZJS |
2546 | break; |
2547 | ||
fba6e687 | 2548 | case ARG_PREFIX: |
7bc040fa | 2549 | if (strv_push(&arg_include_prefixes, optarg) < 0) |
a2aced4a | 2550 | return log_oom(); |
fba6e687 LP |
2551 | break; |
2552 | ||
5c795114 | 2553 | case ARG_EXCLUDE_PREFIX: |
7bc040fa | 2554 | if (strv_push(&arg_exclude_prefixes, optarg) < 0) |
5c795114 DR |
2555 | return log_oom(); |
2556 | break; | |
2557 | ||
cf9a4abd | 2558 | case ARG_ROOT: |
0f03c2a4 | 2559 | r = parse_path_argument_and_warn(optarg, true, &arg_root); |
0f474365 | 2560 | if (r < 0) |
0f03c2a4 | 2561 | return r; |
cf9a4abd MM |
2562 | break; |
2563 | ||
a6d8474f ZJS |
2564 | case ARG_REPLACE: |
2565 | if (!path_is_absolute(optarg) || | |
2566 | !endswith(optarg, ".conf")) { | |
2567 | log_error("The argument to --replace= must an absolute path to a config file"); | |
2568 | return -EINVAL; | |
2569 | } | |
2570 | ||
2571 | arg_replace = optarg; | |
2572 | break; | |
2573 | ||
3b63d2d3 LP |
2574 | case '?': |
2575 | return -EINVAL; | |
2576 | ||
2577 | default: | |
eb9da376 | 2578 | assert_not_reached("Unhandled option"); |
3b63d2d3 | 2579 | } |
3b63d2d3 LP |
2580 | |
2581 | if (!arg_clean && !arg_create && !arg_remove) { | |
35b8ca3a | 2582 | log_error("You need to specify at least one of --clean, --create or --remove."); |
3b63d2d3 LP |
2583 | return -EINVAL; |
2584 | } | |
2585 | ||
a6d8474f ZJS |
2586 | if (arg_replace && optind >= argc) { |
2587 | log_error("When --replace= is given, some configuration items must be specified"); | |
2588 | return -EINVAL; | |
2589 | } | |
2590 | ||
3b63d2d3 LP |
2591 | return 1; |
2592 | } | |
2593 | ||
a6d8474f | 2594 | static int read_config_file(char **config_dirs, const char *fn, bool ignore_enoent, bool *invalid_config) { |
f7ac1ed2 ZJS |
2595 | _cleanup_fclose_ FILE *_f = NULL; |
2596 | FILE *f; | |
1731e34a | 2597 | char line[LINE_MAX]; |
78a92a5a | 2598 | Iterator iterator; |
1731e34a | 2599 | unsigned v = 0; |
78a92a5a | 2600 | Item *i; |
4e68ec18 | 2601 | int r = 0; |
fba6e687 LP |
2602 | |
2603 | assert(fn); | |
2604 | ||
f7ac1ed2 | 2605 | if (streq(fn, "-")) { |
a6d8474f | 2606 | log_debug("Reading config from stdin…"); |
f7ac1ed2 ZJS |
2607 | fn = "<stdin>"; |
2608 | f = stdin; | |
2609 | } else { | |
a6d8474f | 2610 | r = search_and_fopen(fn, "re", arg_root, (const char**) config_dirs, &_f); |
f7ac1ed2 ZJS |
2611 | if (r < 0) { |
2612 | if (ignore_enoent && r == -ENOENT) { | |
2613 | log_debug_errno(r, "Failed to open \"%s\", ignoring: %m", fn); | |
2614 | return 0; | |
2615 | } | |
fba6e687 | 2616 | |
f7ac1ed2 ZJS |
2617 | return log_error_errno(r, "Failed to open '%s': %m", fn); |
2618 | } | |
a6d8474f | 2619 | log_debug("Reading config file \"%s\"…", fn); |
f7ac1ed2 | 2620 | f = _f; |
fba6e687 LP |
2621 | } |
2622 | ||
1731e34a LP |
2623 | FOREACH_LINE(line, f, break) { |
2624 | char *l; | |
fba6e687 | 2625 | int k; |
d9daae55 | 2626 | bool invalid_line = false; |
fba6e687 | 2627 | |
fba6e687 LP |
2628 | v++; |
2629 | ||
2630 | l = strstrip(line); | |
4c701096 | 2631 | if (IN_SET(*l, 0, '#')) |
fba6e687 LP |
2632 | continue; |
2633 | ||
d9daae55 ZJS |
2634 | k = parse_line(fn, v, l, &invalid_line); |
2635 | if (k < 0) { | |
2636 | if (invalid_line) | |
2637 | /* Allow reporting with a special code if the caller requested this */ | |
2638 | *invalid_config = true; | |
2639 | else if (r == 0) | |
2640 | /* The first error becomes our return value */ | |
2641 | r = k; | |
2642 | } | |
fba6e687 LP |
2643 | } |
2644 | ||
78a92a5a | 2645 | /* we have to determine age parameter for each entry of type X */ |
ef43a391 | 2646 | ORDERED_HASHMAP_FOREACH(i, globs, iterator) { |
78a92a5a MS |
2647 | Iterator iter; |
2648 | Item *j, *candidate_item = NULL; | |
2649 | ||
2650 | if (i->type != IGNORE_DIRECTORY_PATH) | |
2651 | continue; | |
2652 | ||
ef43a391 | 2653 | ORDERED_HASHMAP_FOREACH(j, items, iter) { |
5fb13eb5 | 2654 | if (!IN_SET(j->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA)) |
78a92a5a MS |
2655 | continue; |
2656 | ||
2657 | if (path_equal(j->path, i->path)) { | |
2658 | candidate_item = j; | |
2659 | break; | |
2660 | } | |
2661 | ||
2662 | if ((!candidate_item && path_startswith(i->path, j->path)) || | |
2663 | (candidate_item && path_startswith(j->path, candidate_item->path) && (fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0))) | |
2664 | candidate_item = j; | |
2665 | } | |
2666 | ||
9ed2a35e | 2667 | if (candidate_item && candidate_item->age_set) { |
78a92a5a MS |
2668 | i->age = candidate_item->age; |
2669 | i->age_set = true; | |
2670 | } | |
2671 | } | |
2672 | ||
fba6e687 | 2673 | if (ferror(f)) { |
56f64d95 | 2674 | log_error_errno(errno, "Failed to read from file %s: %m", fn); |
fba6e687 LP |
2675 | if (r == 0) |
2676 | r = -EIO; | |
2677 | } | |
2678 | ||
fba6e687 LP |
2679 | return r; |
2680 | } | |
2681 | ||
a6d8474f ZJS |
2682 | static int parse_arguments(char **config_dirs, char **args, bool *invalid_config) { |
2683 | char **arg; | |
2684 | int r; | |
2685 | ||
2686 | STRV_FOREACH(arg, args) { | |
2687 | r = read_config_file(config_dirs, *arg, false, invalid_config); | |
2688 | if (r < 0) | |
2689 | return r; | |
2690 | } | |
2691 | ||
2692 | return 0; | |
2693 | } | |
2694 | ||
2695 | static int read_config_files(char **config_dirs, char **args, bool *invalid_config) { | |
2696 | _cleanup_strv_free_ char **files = NULL; | |
2697 | _cleanup_free_ char *p = NULL; | |
2698 | char **f; | |
2699 | int r; | |
2700 | ||
2701 | r = conf_files_list_strv(&files, ".conf", arg_root, 0, (const char* const*) config_dirs); | |
2702 | if (r < 0) | |
2703 | return log_error_errno(r, "Failed to enumerate tmpfiles.d files: %m"); | |
2704 | ||
2705 | if (arg_replace) { | |
2706 | r = conf_files_insert(&files, arg_root, config_dirs, arg_replace); | |
2707 | if (r < 0) | |
2708 | return log_error_errno(r, "Failed to extend tmpfiles.d file list: %m"); | |
2709 | ||
2710 | p = path_join(arg_root, arg_replace, NULL); | |
2711 | if (!p) | |
2712 | return log_oom(); | |
2713 | } | |
2714 | ||
2715 | STRV_FOREACH(f, files) | |
2716 | if (p && path_equal(*f, p)) { | |
2717 | log_debug("Parsing arguments at position \"%s\"…", *f); | |
2718 | ||
2719 | r = parse_arguments(config_dirs, args, invalid_config); | |
2720 | if (r < 0) | |
2721 | return r; | |
2722 | } else | |
2723 | /* Just warn, ignore result otherwise. | |
2724 | * read_config_file() has some debug output, so no need to print anything. */ | |
2725 | (void) read_config_file(config_dirs, *f, true, invalid_config); | |
2726 | ||
2727 | return 0; | |
2728 | } | |
2729 | ||
5008d581 | 2730 | int main(int argc, char *argv[]) { |
fabe5c0e | 2731 | int r, k; |
3f93da98 | 2732 | ItemArray *a; |
3b63d2d3 | 2733 | Iterator iterator; |
f2b5ca0e | 2734 | _cleanup_strv_free_ char **config_dirs = NULL; |
d9daae55 | 2735 | bool invalid_config = false; |
3b63d2d3 | 2736 | |
fdcad0c2 LP |
2737 | r = parse_argv(argc, argv); |
2738 | if (r <= 0) | |
753615e8 | 2739 | goto finish; |
5008d581 | 2740 | |
eb0ca9eb | 2741 | log_set_target(LOG_TARGET_AUTO); |
5008d581 LP |
2742 | log_parse_environment(); |
2743 | log_open(); | |
2744 | ||
4c12626c LP |
2745 | umask(0022); |
2746 | ||
c3dacc8b | 2747 | mac_selinux_init(); |
5008d581 | 2748 | |
ef43a391 LP |
2749 | items = ordered_hashmap_new(&string_hash_ops); |
2750 | globs = ordered_hashmap_new(&string_hash_ops); | |
b8bb3e8f LP |
2751 | |
2752 | if (!items || !globs) { | |
fabe5c0e | 2753 | r = log_oom(); |
3b63d2d3 LP |
2754 | goto finish; |
2755 | } | |
2756 | ||
fabe5c0e | 2757 | r = 0; |
5008d581 | 2758 | |
f2b5ca0e ZJS |
2759 | if (arg_user) { |
2760 | r = user_config_paths(&config_dirs); | |
2761 | if (r < 0) { | |
2762 | log_error_errno(r, "Failed to initialize configuration directory list: %m"); | |
2763 | goto finish; | |
2764 | } | |
2765 | } else { | |
2766 | config_dirs = strv_split_nulstr(CONF_PATHS_NULSTR("tmpfiles.d")); | |
2767 | if (!config_dirs) { | |
2768 | r = log_oom(); | |
2769 | goto finish; | |
2770 | } | |
2771 | } | |
2772 | ||
79c91cec | 2773 | if (DEBUG_LOGGING) { |
f2b5ca0e ZJS |
2774 | _cleanup_free_ char *t = NULL; |
2775 | ||
2776 | t = strv_join(config_dirs, "\n\t"); | |
2777 | if (t) | |
2778 | log_debug("Looking for configuration files in (higher priority first:\n\t%s", t); | |
2779 | } | |
2780 | ||
a6d8474f ZJS |
2781 | /* If command line arguments are specified along with --replace, read all |
2782 | * configuration files and insert the positional arguments at the specified | |
2783 | * place. Otherwise, if command line arguments are specified, execute just | |
2784 | * them, and finally, without --replace= or any positional arguments, just | |
2785 | * read configuration and execute it. | |
2786 | */ | |
2787 | if (arg_replace || optind >= argc) | |
2788 | r = read_config_files(config_dirs, argv + optind, &invalid_config); | |
2789 | else | |
2790 | r = parse_arguments(config_dirs, argv + optind, &invalid_config); | |
2791 | if (r < 0) | |
2792 | goto finish; | |
5008d581 | 2793 | |
3b63d2d3 | 2794 | |
5008d581 | 2795 | |
17493fa5 LP |
2796 | /* The non-globbing ones usually create things, hence we apply |
2797 | * them first */ | |
ef43a391 | 2798 | ORDERED_HASHMAP_FOREACH(a, items, iterator) { |
3f93da98 | 2799 | k = process_item_array(a); |
1db50423 ZJS |
2800 | if (k < 0 && r == 0) |
2801 | r = k; | |
2802 | } | |
b8bb3e8f | 2803 | |
17493fa5 LP |
2804 | /* The globbing ones usually alter things, hence we apply them |
2805 | * second. */ | |
ef43a391 | 2806 | ORDERED_HASHMAP_FOREACH(a, globs, iterator) { |
3f93da98 | 2807 | k = process_item_array(a); |
1db50423 ZJS |
2808 | if (k < 0 && r == 0) |
2809 | r = k; | |
2810 | } | |
3b63d2d3 | 2811 | |
5008d581 | 2812 | finish: |
224b0e7a ZJS |
2813 | ordered_hashmap_free_with_destructor(items, item_array_free); |
2814 | ordered_hashmap_free_with_destructor(globs, item_array_free); | |
5008d581 | 2815 | |
7bc040fa LP |
2816 | free(arg_include_prefixes); |
2817 | free(arg_exclude_prefixes); | |
cf9a4abd | 2818 | free(arg_root); |
a2aced4a | 2819 | |
17b90525 LP |
2820 | set_free_free(unix_sockets); |
2821 | ||
cc56fafe | 2822 | mac_selinux_finish(); |
29003cff | 2823 | |
d9daae55 ZJS |
2824 | if (r < 0) |
2825 | return EXIT_FAILURE; | |
2826 | else if (invalid_config) | |
2827 | return EX_DATAERR; | |
2828 | else | |
2829 | return EXIT_SUCCESS; | |
5008d581 | 2830 | } |