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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
5008d581 | 2 | |
5008d581 | 3 | #include <errno.h> |
3f6fd1ba LP |
4 | #include <fcntl.h> |
5 | #include <fnmatch.h> | |
6 | #include <getopt.h> | |
5008d581 | 7 | #include <limits.h> |
3f6fd1ba LP |
8 | #include <linux/fs.h> |
9 | #include <stdbool.h> | |
10 | #include <stddef.h> | |
3b63d2d3 | 11 | #include <stdlib.h> |
52b32b2a | 12 | #include <sys/file.h> |
ebf4e801 | 13 | #include <sys/xattr.h> |
d9daae55 | 14 | #include <sysexits.h> |
3f6fd1ba LP |
15 | #include <time.h> |
16 | #include <unistd.h> | |
5008d581 | 17 | |
5a8575ef ZJS |
18 | #include "sd-path.h" |
19 | ||
3f6fd1ba | 20 | #include "acl-util.h" |
b5efdb8a | 21 | #include "alloc-util.h" |
3f6fd1ba | 22 | #include "btrfs-util.h" |
430f0182 | 23 | #include "capability-util.h" |
c8b3094d | 24 | #include "chattr-util.h" |
3f6fd1ba LP |
25 | #include "conf-files.h" |
26 | #include "copy.h" | |
a0f29c76 | 27 | #include "def.h" |
8fb3f009 | 28 | #include "dirent-util.h" |
63d3d0a5 | 29 | #include "dissect-image.h" |
4f5dd394 | 30 | #include "escape.h" |
3ffd4af2 | 31 | #include "fd-util.h" |
0d39fa9c | 32 | #include "fileio.h" |
f97b34a6 | 33 | #include "format-util.h" |
f4f15635 | 34 | #include "fs-util.h" |
7d50b32a | 35 | #include "glob-util.h" |
c004493c | 36 | #include "io-util.h" |
3f6fd1ba | 37 | #include "label.h" |
5008d581 | 38 | #include "log.h" |
54693d9b | 39 | #include "macro.h" |
87938c3b | 40 | #include "main-func.h" |
ddb439b8 LP |
41 | #include "missing_stat.h" |
42 | #include "missing_syscall.h" | |
49e942b2 | 43 | #include "mkdir.h" |
63d3d0a5 | 44 | #include "mount-util.h" |
049af8ad | 45 | #include "mountpoint-util.h" |
a3451c2c | 46 | #include "offline-passwd.h" |
dcd5c891 | 47 | #include "pager.h" |
6bedfcbb | 48 | #include "parse-util.h" |
f2b5ca0e | 49 | #include "path-lookup.h" |
9eb977db | 50 | #include "path-util.h" |
294bf0c3 | 51 | #include "pretty-print.h" |
e5358401 | 52 | #include "rlimit-util.h" |
c6878637 | 53 | #include "rm-rf.h" |
d7b8eec7 | 54 | #include "selinux-util.h" |
3f6fd1ba | 55 | #include "set.h" |
760877e9 | 56 | #include "sort-util.h" |
3f6fd1ba | 57 | #include "specifier.h" |
8fcde012 | 58 | #include "stat-util.h" |
15a5e950 | 59 | #include "stdio-util.h" |
8b43440b | 60 | #include "string-table.h" |
07630cea | 61 | #include "string-util.h" |
3f6fd1ba | 62 | #include "strv.h" |
3f532a59 | 63 | #include "terminal-util.h" |
affb60b1 | 64 | #include "umask-util.h" |
b1d4f8e1 | 65 | #include "user-util.h" |
5008d581 | 66 | |
01000479 | 67 | /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates |
5008d581 | 68 | * them in the file system. This is intended to be used to create |
db019b8d KS |
69 | * properly owned directories beneath /tmp, /var/tmp, /run, which are |
70 | * volatile and hence need to be recreated on bootup. */ | |
5008d581 | 71 | |
1a967b6b LP |
72 | typedef enum OperationMask { |
73 | OPERATION_CREATE = 1 << 0, | |
74 | OPERATION_REMOVE = 1 << 1, | |
75 | OPERATION_CLEAN = 1 << 2, | |
76 | } OperationMask; | |
77 | ||
66ccd038 | 78 | typedef enum ItemType { |
b8bb3e8f | 79 | /* These ones take file names */ |
3b63d2d3 | 80 | CREATE_FILE = 'f', |
eccebf4b | 81 | TRUNCATE_FILE = 'F', /* deprecated: use f+ */ |
3b63d2d3 LP |
82 | CREATE_DIRECTORY = 'd', |
83 | TRUNCATE_DIRECTORY = 'D', | |
d7b8eec7 | 84 | CREATE_SUBVOLUME = 'v', |
5fb13eb5 LP |
85 | CREATE_SUBVOLUME_INHERIT_QUOTA = 'q', |
86 | CREATE_SUBVOLUME_NEW_QUOTA = 'Q', | |
ee17ee7c | 87 | CREATE_FIFO = 'p', |
468d726b LP |
88 | CREATE_SYMLINK = 'L', |
89 | CREATE_CHAR_DEVICE = 'c', | |
90 | CREATE_BLOCK_DEVICE = 'b', | |
849958d1 | 91 | COPY_FILES = 'C', |
b8bb3e8f LP |
92 | |
93 | /* These ones take globs */ | |
17493fa5 | 94 | WRITE_FILE = 'w', |
df8dee85 | 95 | EMPTY_DIRECTORY = 'e', |
b705ab6a ZJS |
96 | SET_XATTR = 't', |
97 | RECURSIVE_SET_XATTR = 'T', | |
98 | SET_ACL = 'a', | |
99 | RECURSIVE_SET_ACL = 'A', | |
17493fa5 LP |
100 | SET_ATTRIBUTE = 'h', |
101 | RECURSIVE_SET_ATTRIBUTE = 'H', | |
3b63d2d3 | 102 | IGNORE_PATH = 'x', |
78a92a5a | 103 | IGNORE_DIRECTORY_PATH = 'X', |
3b63d2d3 | 104 | REMOVE_PATH = 'r', |
a8d88783 | 105 | RECURSIVE_REMOVE_PATH = 'R', |
777b87e7 | 106 | RELABEL_PATH = 'z', |
e73a03e0 | 107 | RECURSIVE_RELABEL_PATH = 'Z', |
17493fa5 | 108 | ADJUST_MODE = 'm', /* legacy, 'z' is identical to this */ |
66ccd038 | 109 | } ItemType; |
3b63d2d3 LP |
110 | |
111 | typedef struct Item { | |
66ccd038 | 112 | ItemType type; |
3b63d2d3 LP |
113 | |
114 | char *path; | |
468d726b | 115 | char *argument; |
ebf4e801 | 116 | char **xattrs; |
349cc4a5 | 117 | #if HAVE_ACL |
f8eeeaf9 ZJS |
118 | acl_t acl_access; |
119 | acl_t acl_default; | |
120 | #endif | |
5008d581 LP |
121 | uid_t uid; |
122 | gid_t gid; | |
3b63d2d3 LP |
123 | mode_t mode; |
124 | usec_t age; | |
125 | ||
468d726b | 126 | dev_t major_minor; |
88ec4dfa LP |
127 | unsigned attribute_value; |
128 | unsigned attribute_mask; | |
468d726b | 129 | |
3b63d2d3 LP |
130 | bool uid_set:1; |
131 | bool gid_set:1; | |
132 | bool mode_set:1; | |
133 | bool age_set:1; | |
abef3f91 | 134 | bool mask_perms:1; |
88ec4dfa | 135 | bool attribute_set:1; |
24f3a374 LP |
136 | |
137 | bool keep_first_level:1; | |
1910cd0e | 138 | |
c55ac248 | 139 | bool append_or_force:1; |
2e78fa79 | 140 | |
6d7b5433 WD |
141 | bool allow_failure:1; |
142 | ||
811a1587 | 143 | OperationMask done; |
3b63d2d3 LP |
144 | } Item; |
145 | ||
3f93da98 ZJS |
146 | typedef struct ItemArray { |
147 | Item *items; | |
96d10d78 | 148 | size_t n_items; |
64768714 | 149 | size_t allocated; |
811a1587 LP |
150 | |
151 | struct ItemArray *parent; | |
152 | Set *children; | |
3f93da98 ZJS |
153 | } ItemArray; |
154 | ||
5a8575ef | 155 | typedef enum DirectoryType { |
133bbca4 | 156 | DIRECTORY_RUNTIME, |
5a8575ef ZJS |
157 | DIRECTORY_STATE, |
158 | DIRECTORY_CACHE, | |
159 | DIRECTORY_LOGS, | |
160 | _DIRECTORY_TYPE_MAX, | |
161 | } DirectoryType; | |
162 | ||
ceaaeb9b | 163 | static bool arg_cat_config = false; |
f2b5ca0e | 164 | static bool arg_user = false; |
1a967b6b | 165 | static OperationMask arg_operation = 0; |
81815651 | 166 | static bool arg_boot = false; |
0221d68a | 167 | static PagerFlags arg_pager_flags = 0; |
3b63d2d3 | 168 | |
7bc040fa LP |
169 | static char **arg_include_prefixes = NULL; |
170 | static char **arg_exclude_prefixes = NULL; | |
cf9a4abd | 171 | static char *arg_root = NULL; |
63d3d0a5 | 172 | static char *arg_image = NULL; |
a6d8474f | 173 | static char *arg_replace = NULL; |
fba6e687 | 174 | |
3b63d2d3 LP |
175 | #define MAX_DEPTH 256 |
176 | ||
ef43a391 | 177 | static OrderedHashmap *items = NULL, *globs = NULL; |
7bc040fa LP |
178 | static Set *unix_sockets = NULL; |
179 | ||
87938c3b YW |
180 | STATIC_DESTRUCTOR_REGISTER(items, ordered_hashmap_freep); |
181 | STATIC_DESTRUCTOR_REGISTER(globs, ordered_hashmap_freep); | |
182 | STATIC_DESTRUCTOR_REGISTER(unix_sockets, set_free_freep); | |
183 | STATIC_DESTRUCTOR_REGISTER(arg_include_prefixes, freep); | |
184 | STATIC_DESTRUCTOR_REGISTER(arg_exclude_prefixes, freep); | |
185 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); | |
63d3d0a5 | 186 | STATIC_DESTRUCTOR_REGISTER(arg_image, freep); |
87938c3b | 187 | |
303ee601 ZJS |
188 | static int specifier_machine_id_safe(char specifier, const void *data, const void *userdata, char **ret); |
189 | static int specifier_directory(char specifier, const void *data, const void *userdata, char **ret); | |
4cef1923 | 190 | |
bd550f78 | 191 | static const Specifier specifier_table[] = { |
e93387f3 | 192 | { 'a', specifier_architecture, NULL }, |
5a8575ef | 193 | { 'b', specifier_boot_id, NULL }, |
e93387f3 | 194 | { 'B', specifier_os_build_id, NULL }, |
5a8575ef | 195 | { 'H', specifier_host_name, NULL }, |
e97708fa | 196 | { 'l', specifier_short_host_name, NULL }, |
e93387f3 | 197 | { 'm', specifier_machine_id_safe, NULL }, |
268f5a54 | 198 | { 'o', specifier_os_id, NULL }, |
e93387f3 | 199 | { 'v', specifier_kernel_release, NULL }, |
268f5a54 | 200 | { 'w', specifier_os_version_id, NULL }, |
268f5a54 | 201 | { 'W', specifier_os_variant_id, NULL }, |
5a8575ef | 202 | |
5a8575ef | 203 | { 'h', specifier_user_home, NULL }, |
b294e594 | 204 | |
5a8575ef ZJS |
205 | { 'C', specifier_directory, UINT_TO_PTR(DIRECTORY_CACHE) }, |
206 | { 'L', specifier_directory, UINT_TO_PTR(DIRECTORY_LOGS) }, | |
e93387f3 YW |
207 | { 'S', specifier_directory, UINT_TO_PTR(DIRECTORY_STATE) }, |
208 | { 't', specifier_directory, UINT_TO_PTR(DIRECTORY_RUNTIME) }, | |
209 | ||
210 | COMMON_CREDS_SPECIFIERS, | |
211 | ||
2824aa07 | 212 | COMMON_TMP_SPECIFIERS, |
bd550f78 LP |
213 | {} |
214 | }; | |
215 | ||
303ee601 | 216 | static int specifier_machine_id_safe(char specifier, const void *data, const void *userdata, char **ret) { |
4cef1923 FB |
217 | int r; |
218 | ||
d8dab757 FB |
219 | /* If /etc/machine_id is missing or empty (e.g. in a chroot environment) |
220 | * return a recognizable error so that the caller can skip the rule | |
4cef1923 FB |
221 | * gracefully. */ |
222 | ||
223 | r = specifier_machine_id(specifier, data, userdata, ret); | |
d8dab757 | 224 | if (IN_SET(r, -ENOENT, -ENOMEDIUM)) |
5a8575ef | 225 | return -ENXIO; |
4cef1923 FB |
226 | |
227 | return r; | |
228 | } | |
229 | ||
303ee601 | 230 | static int specifier_directory(char specifier, const void *data, const void *userdata, char **ret) { |
5a8575ef ZJS |
231 | struct table_entry { |
232 | uint64_t type; | |
233 | const char *suffix; | |
234 | }; | |
235 | ||
236 | static const struct table_entry paths_system[] = { | |
237 | [DIRECTORY_RUNTIME] = { SD_PATH_SYSTEM_RUNTIME }, | |
238 | [DIRECTORY_STATE] = { SD_PATH_SYSTEM_STATE_PRIVATE }, | |
239 | [DIRECTORY_CACHE] = { SD_PATH_SYSTEM_STATE_CACHE }, | |
240 | [DIRECTORY_LOGS] = { SD_PATH_SYSTEM_STATE_LOGS }, | |
241 | }; | |
242 | ||
243 | static const struct table_entry paths_user[] = { | |
244 | [DIRECTORY_RUNTIME] = { SD_PATH_USER_RUNTIME }, | |
245 | [DIRECTORY_STATE] = { SD_PATH_USER_CONFIGURATION }, | |
246 | [DIRECTORY_CACHE] = { SD_PATH_USER_STATE_CACHE }, | |
247 | [DIRECTORY_LOGS] = { SD_PATH_USER_CONFIGURATION, "log" }, | |
248 | }; | |
249 | ||
250 | unsigned i; | |
251 | const struct table_entry *paths; | |
252 | ||
253 | assert_cc(ELEMENTSOF(paths_system) == ELEMENTSOF(paths_user)); | |
254 | paths = arg_user ? paths_user : paths_system; | |
255 | ||
256 | i = PTR_TO_UINT(data); | |
257 | assert(i < ELEMENTSOF(paths_system)); | |
258 | ||
51327bcc | 259 | return sd_path_lookup(paths[i].type, paths[i].suffix, ret); |
5a8575ef ZJS |
260 | } |
261 | ||
4cef1923 FB |
262 | static int log_unresolvable_specifier(const char *filename, unsigned line) { |
263 | static bool notified = false; | |
264 | ||
5a8575ef ZJS |
265 | /* In system mode, this is called when /etc is not fully initialized (e.g. |
266 | * in a chroot environment) where some specifiers are unresolvable. In user | |
267 | * mode, this is called when some variables are not defined. These cases are | |
268 | * not considered as an error so log at LOG_NOTICE only for the first time | |
269 | * and then downgrade this to LOG_DEBUG for the rest. */ | |
4cef1923 | 270 | |
d02933fd LP |
271 | log_syntax(NULL, |
272 | notified ? LOG_DEBUG : LOG_NOTICE, | |
273 | filename, line, 0, | |
274 | "Failed to resolve specifier: %s, skipping", | |
275 | arg_user ? "Required $XDG_... variable not defined" : "uninitialized /etc detected"); | |
4cef1923 FB |
276 | |
277 | if (!notified) | |
278 | log_notice("All rules containing unresolvable specifiers will be skipped."); | |
279 | ||
280 | notified = true; | |
281 | return 0; | |
282 | } | |
283 | ||
f2b5ca0e ZJS |
284 | static int user_config_paths(char*** ret) { |
285 | _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL; | |
286 | _cleanup_free_ char *persistent_config = NULL, *runtime_config = NULL, *data_home = NULL; | |
287 | _cleanup_strv_free_ char **res = NULL; | |
288 | int r; | |
289 | ||
290 | r = xdg_user_dirs(&config_dirs, &data_dirs); | |
291 | if (r < 0) | |
292 | return r; | |
293 | ||
294 | r = xdg_user_config_dir(&persistent_config, "/user-tmpfiles.d"); | |
295 | if (r < 0 && r != -ENXIO) | |
296 | return r; | |
297 | ||
298 | r = xdg_user_runtime_dir(&runtime_config, "/user-tmpfiles.d"); | |
299 | if (r < 0 && r != -ENXIO) | |
300 | return r; | |
301 | ||
302 | r = xdg_user_data_dir(&data_home, "/user-tmpfiles.d"); | |
303 | if (r < 0 && r != -ENXIO) | |
304 | return r; | |
305 | ||
306 | r = strv_extend_strv_concat(&res, config_dirs, "/user-tmpfiles.d"); | |
307 | if (r < 0) | |
308 | return r; | |
309 | ||
310 | r = strv_extend(&res, persistent_config); | |
311 | if (r < 0) | |
312 | return r; | |
313 | ||
314 | r = strv_extend(&res, runtime_config); | |
315 | if (r < 0) | |
316 | return r; | |
317 | ||
318 | r = strv_extend(&res, data_home); | |
319 | if (r < 0) | |
320 | return r; | |
321 | ||
322 | r = strv_extend_strv_concat(&res, data_dirs, "/user-tmpfiles.d"); | |
323 | if (r < 0) | |
324 | return r; | |
325 | ||
326 | r = path_strv_make_absolute_cwd(res); | |
327 | if (r < 0) | |
328 | return r; | |
329 | ||
ae2a15bc | 330 | *ret = TAKE_PTR(res); |
f2b5ca0e ZJS |
331 | return 0; |
332 | } | |
333 | ||
66ccd038 | 334 | static bool needs_glob(ItemType t) { |
cde684a2 LP |
335 | return IN_SET(t, |
336 | WRITE_FILE, | |
337 | IGNORE_PATH, | |
338 | IGNORE_DIRECTORY_PATH, | |
339 | REMOVE_PATH, | |
340 | RECURSIVE_REMOVE_PATH, | |
df8dee85 | 341 | EMPTY_DIRECTORY, |
e73a03e0 | 342 | ADJUST_MODE, |
cde684a2 | 343 | RELABEL_PATH, |
b705ab6a ZJS |
344 | RECURSIVE_RELABEL_PATH, |
345 | SET_XATTR, | |
346 | RECURSIVE_SET_XATTR, | |
347 | SET_ACL, | |
34f64536 LP |
348 | RECURSIVE_SET_ACL, |
349 | SET_ATTRIBUTE, | |
350 | RECURSIVE_SET_ATTRIBUTE); | |
b8bb3e8f LP |
351 | } |
352 | ||
3f93da98 ZJS |
353 | static bool takes_ownership(ItemType t) { |
354 | return IN_SET(t, | |
355 | CREATE_FILE, | |
356 | TRUNCATE_FILE, | |
357 | CREATE_DIRECTORY, | |
df8dee85 | 358 | EMPTY_DIRECTORY, |
3f93da98 ZJS |
359 | TRUNCATE_DIRECTORY, |
360 | CREATE_SUBVOLUME, | |
5fb13eb5 LP |
361 | CREATE_SUBVOLUME_INHERIT_QUOTA, |
362 | CREATE_SUBVOLUME_NEW_QUOTA, | |
3f93da98 ZJS |
363 | CREATE_FIFO, |
364 | CREATE_SYMLINK, | |
365 | CREATE_CHAR_DEVICE, | |
366 | CREATE_BLOCK_DEVICE, | |
367 | COPY_FILES, | |
3f93da98 ZJS |
368 | WRITE_FILE, |
369 | IGNORE_PATH, | |
370 | IGNORE_DIRECTORY_PATH, | |
371 | REMOVE_PATH, | |
372 | RECURSIVE_REMOVE_PATH); | |
373 | } | |
374 | ||
ef43a391 | 375 | static struct Item* find_glob(OrderedHashmap *h, const char *match) { |
3f93da98 | 376 | ItemArray *j; |
b8bb3e8f | 377 | |
90e74a66 | 378 | ORDERED_HASHMAP_FOREACH(j, h) { |
96d10d78 | 379 | size_t n; |
3f93da98 | 380 | |
96d10d78 | 381 | for (n = 0; n < j->n_items; n++) { |
3f93da98 ZJS |
382 | Item *item = j->items + n; |
383 | ||
384 | if (fnmatch(item->path, match, FNM_PATHNAME|FNM_PERIOD) == 0) | |
385 | return item; | |
386 | } | |
387 | } | |
b8bb3e8f LP |
388 | |
389 | return NULL; | |
390 | } | |
391 | ||
71a0be76 YW |
392 | static int load_unix_sockets(void) { |
393 | _cleanup_set_free_free_ Set *sockets = NULL; | |
7fd1b19b | 394 | _cleanup_fclose_ FILE *f = NULL; |
f1ff734f | 395 | int r; |
17b90525 LP |
396 | |
397 | if (unix_sockets) | |
71a0be76 | 398 | return 0; |
17b90525 | 399 | |
f1ff734f | 400 | /* We maintain a cache of the sockets we found in /proc/net/unix to speed things up a little. */ |
17b90525 | 401 | |
71a0be76 YW |
402 | sockets = set_new(&path_hash_ops); |
403 | if (!sockets) | |
404 | return log_oom(); | |
17b90525 | 405 | |
fdcad0c2 | 406 | f = fopen("/proc/net/unix", "re"); |
71a0be76 YW |
407 | if (!f) |
408 | return log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_WARNING, errno, | |
409 | "Failed to open /proc/net/unix, ignoring: %m"); | |
17b90525 | 410 | |
fdcad0c2 | 411 | /* Skip header */ |
f1ff734f | 412 | r = read_line(f, LONG_LINE_MAX, NULL); |
71a0be76 YW |
413 | if (r < 0) |
414 | return log_warning_errno(r, "Failed to skip /proc/net/unix header line: %m"); | |
415 | if (r == 0) | |
416 | return log_warning_errno(SYNTHETIC_ERRNO(EIO), "Premature end of file reading /proc/net/unix."); | |
17b90525 LP |
417 | |
418 | for (;;) { | |
71a0be76 YW |
419 | _cleanup_free_ char *line = NULL, *s = NULL; |
420 | char *p; | |
17b90525 | 421 | |
f1ff734f | 422 | r = read_line(f, LONG_LINE_MAX, &line); |
71a0be76 YW |
423 | if (r < 0) |
424 | return log_warning_errno(r, "Failed to read /proc/net/unix line, ignoring: %m"); | |
f1ff734f | 425 | if (r == 0) /* EOF */ |
17b90525 LP |
426 | break; |
427 | ||
fdcad0c2 LP |
428 | p = strchr(line, ':'); |
429 | if (!p) | |
430 | continue; | |
431 | ||
432 | if (strlen(p) < 37) | |
17b90525 LP |
433 | continue; |
434 | ||
fdcad0c2 | 435 | p += 37; |
17b90525 | 436 | p += strspn(p, WHITESPACE); |
fdcad0c2 | 437 | p += strcspn(p, WHITESPACE); /* skip one more word */ |
17b90525 LP |
438 | p += strspn(p, WHITESPACE); |
439 | ||
440 | if (*p != '/') | |
441 | continue; | |
442 | ||
fdcad0c2 | 443 | s = strdup(p); |
71a0be76 YW |
444 | if (!s) |
445 | return log_oom(); | |
17b90525 | 446 | |
858d36c1 | 447 | path_simplify(s, false); |
4ff21d85 | 448 | |
71a0be76 YW |
449 | r = set_consume(sockets, s); |
450 | if (r == -EEXIST) | |
451 | continue; | |
452 | if (r < 0) | |
453 | return log_warning_errno(r, "Failed to add AF_UNIX socket to set, ignoring: %m"); | |
17b90525 | 454 | |
71a0be76 YW |
455 | TAKE_PTR(s); |
456 | } | |
17b90525 | 457 | |
71a0be76 YW |
458 | unix_sockets = TAKE_PTR(sockets); |
459 | return 1; | |
17b90525 LP |
460 | } |
461 | ||
462 | static bool unix_socket_alive(const char *fn) { | |
463 | assert(fn); | |
464 | ||
71a0be76 YW |
465 | if (load_unix_sockets() < 0) |
466 | return true; /* We don't know, so assume yes */ | |
17b90525 | 467 | |
71a0be76 | 468 | return !!set_get(unix_sockets, (char*) fn); |
17b90525 LP |
469 | } |
470 | ||
df99a9ef ZJS |
471 | static DIR* xopendirat_nomod(int dirfd, const char *path) { |
472 | DIR *dir; | |
473 | ||
474 | dir = xopendirat(dirfd, path, O_NOFOLLOW|O_NOATIME); | |
1532227a LP |
475 | if (dir) |
476 | return dir; | |
477 | ||
478 | log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); | |
479 | if (errno != EPERM) | |
480 | return NULL; | |
481 | ||
482 | dir = xopendirat(dirfd, path, O_NOFOLLOW); | |
483 | if (!dir) | |
484 | log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); | |
df99a9ef ZJS |
485 | |
486 | return dir; | |
487 | } | |
488 | ||
489 | static DIR* opendir_nomod(const char *path) { | |
490 | return xopendirat_nomod(AT_FDCWD, path); | |
491 | } | |
492 | ||
ddb439b8 LP |
493 | static inline nsec_t load_statx_timestamp_nsec(const struct statx_timestamp *ts) { |
494 | assert(ts); | |
495 | ||
496 | if (ts->tv_sec < 0) | |
497 | return NSEC_INFINITY; | |
498 | ||
499 | if ((nsec_t) ts->tv_sec >= (UINT64_MAX - ts->tv_nsec) / NSEC_PER_SEC) | |
500 | return NSEC_INFINITY; | |
501 | ||
502 | return ts->tv_sec * NSEC_PER_SEC + ts->tv_nsec; | |
503 | } | |
504 | ||
3b63d2d3 | 505 | static int dir_cleanup( |
78a92a5a | 506 | Item *i, |
3b63d2d3 LP |
507 | const char *p, |
508 | DIR *d, | |
ddb439b8 LP |
509 | nsec_t self_atime_nsec, |
510 | nsec_t self_mtime_nsec, | |
511 | nsec_t cutoff_nsec, | |
512 | dev_t rootdev_major, | |
513 | dev_t rootdev_minor, | |
3b63d2d3 | 514 | bool mountpoint, |
24f3a374 | 515 | int maxdepth, |
265ffa1e LP |
516 | bool keep_this_level) { |
517 | ||
3b63d2d3 | 518 | bool deleted = false; |
ddb439b8 | 519 | struct dirent *dent; |
3b63d2d3 LP |
520 | int r = 0; |
521 | ||
8fb3f009 | 522 | FOREACH_DIRENT_ALL(dent, d, break) { |
7fd1b19b | 523 | _cleanup_free_ char *sub_path = NULL; |
ddb439b8 | 524 | nsec_t atime_nsec, mtime_nsec, ctime_nsec, btime_nsec; |
3b63d2d3 | 525 | |
49bfc877 | 526 | if (dot_or_dot_dot(dent->d_name)) |
3b63d2d3 | 527 | continue; |
5008d581 | 528 | |
ca194a2a | 529 | /* If statx() is supported, use it. It's preferable over fstatat() since it tells us |
69e3234d | 530 | * explicitly where we are looking at a mount point, for free as side information. Determining |
ca194a2a LP |
531 | * the same information without statx() is hard, see the complexity of path_is_mount_point(), |
532 | * and also much slower as it requires a number of syscalls instead of just one. Hence, when | |
533 | * we have modern statx() we use it instead of fstat() and do proper mount point checks, | |
534 | * while on older kernels's well do traditional st_dev based detection of mount points. | |
535 | * | |
536 | * Using statx() for detecting mount points also has the benfit that we handle weird file | |
537 | * systems such as overlayfs better where each file is originating from a different | |
538 | * st_dev. */ | |
539 | ||
540 | STRUCT_STATX_DEFINE(sx); | |
541 | ||
542 | r = statx_fallback( | |
543 | dirfd(d), dent->d_name, | |
544 | AT_SYMLINK_NOFOLLOW|AT_NO_AUTOMOUNT, | |
545 | STATX_TYPE|STATX_MODE|STATX_UID|STATX_ATIME|STATX_MTIME|STATX_CTIME|STATX_BTIME, | |
546 | &sx); | |
547 | if (r == -ENOENT) | |
548 | continue; | |
549 | if (r < 0) { | |
550 | /* FUSE, NFS mounts, SELinux might return EACCES */ | |
551 | r = log_full_errno(errno == EACCES ? LOG_DEBUG : LOG_ERR, errno, | |
552 | "statx(%s/%s) failed: %m", p, dent->d_name); | |
553 | continue; | |
3b63d2d3 LP |
554 | } |
555 | ||
ca194a2a LP |
556 | if (FLAGS_SET(sx.stx_attributes_mask, STATX_ATTR_MOUNT_ROOT)) { |
557 | /* Yay, we have the mount point API, use it */ | |
558 | if (FLAGS_SET(sx.stx_attributes, STATX_ATTR_MOUNT_ROOT)) { | |
559 | log_debug("Ignoring \"%s/%s\": different mount points.", p, dent->d_name); | |
ddb439b8 LP |
560 | continue; |
561 | } | |
ca194a2a LP |
562 | } else { |
563 | /* So we might have statx() but the STATX_ATTR_MOUNT_ROOT flag is not supported, fall | |
564 | * back to traditional stx_dev checking. */ | |
565 | if (sx.stx_dev_major != rootdev_major || | |
566 | sx.stx_dev_minor != rootdev_minor) { | |
ddb439b8 LP |
567 | log_debug("Ignoring \"%s/%s\": different filesystem.", p, dent->d_name); |
568 | continue; | |
569 | } | |
570 | ||
ca194a2a LP |
571 | /* Try to detect bind mounts of the same filesystem instance; they do not differ in device |
572 | * major/minors. This type of query is not supported on all kernels or filesystem types | |
573 | * though. */ | |
574 | if (S_ISDIR(sx.stx_mode)) { | |
575 | int q; | |
3b63d2d3 | 576 | |
ca194a2a LP |
577 | q = fd_is_mount_point(dirfd(d), dent->d_name, 0); |
578 | if (q < 0) | |
579 | log_debug_errno(q, "Failed to determine whether \"%s/%s\" is a mount point, ignoring: %m", p, dent->d_name); | |
580 | else if (q > 0) { | |
581 | log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.", p, dent->d_name); | |
582 | continue; | |
583 | } | |
60bdc0ca | 584 | } |
582deb84 | 585 | } |
99d680ac | 586 | |
ca194a2a LP |
587 | atime_nsec = FLAGS_SET(sx.stx_mask, STATX_ATIME) ? load_statx_timestamp_nsec(&sx.stx_atime) : 0; |
588 | mtime_nsec = FLAGS_SET(sx.stx_mask, STATX_MTIME) ? load_statx_timestamp_nsec(&sx.stx_mtime) : 0; | |
589 | ctime_nsec = FLAGS_SET(sx.stx_mask, STATX_CTIME) ? load_statx_timestamp_nsec(&sx.stx_ctime) : 0; | |
590 | btime_nsec = FLAGS_SET(sx.stx_mask, STATX_BTIME) ? load_statx_timestamp_nsec(&sx.stx_btime) : 0; | |
591 | ||
113ed3be | 592 | sub_path = path_join(p, dent->d_name); |
cde684a2 | 593 | if (!sub_path) { |
0d0f0c50 | 594 | r = log_oom(); |
3b63d2d3 LP |
595 | goto finish; |
596 | } | |
597 | ||
598 | /* Is there an item configured for this path? */ | |
ef43a391 | 599 | if (ordered_hashmap_get(items, sub_path)) { |
582deb84 | 600 | log_debug("Ignoring \"%s\": a separate entry exists.", sub_path); |
3b63d2d3 | 601 | continue; |
582deb84 | 602 | } |
3b63d2d3 | 603 | |
582deb84 ZJS |
604 | if (find_glob(globs, sub_path)) { |
605 | log_debug("Ignoring \"%s\": a separate glob exists.", sub_path); | |
b8bb3e8f | 606 | continue; |
582deb84 | 607 | } |
b8bb3e8f | 608 | |
ca194a2a | 609 | if (S_ISDIR(sx.stx_mode)) { |
52b32b2a | 610 | _cleanup_closedir_ DIR *sub_dir = NULL; |
3b63d2d3 LP |
611 | |
612 | if (mountpoint && | |
613 | streq(dent->d_name, "lost+found") && | |
ca194a2a | 614 | sx.stx_uid == 0) { |
781bc44e | 615 | log_debug("Ignoring directory \"%s\".", sub_path); |
3b63d2d3 | 616 | continue; |
582deb84 | 617 | } |
3b63d2d3 LP |
618 | |
619 | if (maxdepth <= 0) | |
582deb84 | 620 | log_warning("Reached max depth on \"%s\".", sub_path); |
3b63d2d3 | 621 | else { |
3b63d2d3 LP |
622 | int q; |
623 | ||
df99a9ef | 624 | sub_dir = xopendirat_nomod(dirfd(d), dent->d_name); |
cde684a2 | 625 | if (!sub_dir) { |
582deb84 | 626 | if (errno != ENOENT) |
781bc44e | 627 | r = log_warning_errno(errno, "Opening directory \"%s\" failed, ignoring: %m", sub_path); |
3b63d2d3 LP |
628 | |
629 | continue; | |
630 | } | |
631 | ||
52b32b2a LP |
632 | if (flock(dirfd(sub_dir), LOCK_EX|LOCK_NB) < 0) { |
633 | log_debug_errno(errno, "Couldn't acquire shared BSD lock on directory \"%s\", skipping: %m", p); | |
634 | continue; | |
635 | } | |
636 | ||
ddb439b8 LP |
637 | q = dir_cleanup(i, |
638 | sub_path, sub_dir, | |
639 | atime_nsec, mtime_nsec, cutoff_nsec, | |
640 | rootdev_major, rootdev_minor, | |
641 | false, maxdepth-1, false); | |
3b63d2d3 LP |
642 | if (q < 0) |
643 | r = q; | |
644 | } | |
645 | ||
a23fabc6 LP |
646 | /* Note: if you are wondering why we don't support the sticky bit for excluding |
647 | * directories from cleaning like we do it for other file system objects: well, the | |
648 | * sticky bit already has a meaning for directories, so we don't want to overload | |
649 | * that. */ | |
24f3a374 | 650 | |
582deb84 | 651 | if (keep_this_level) { |
781bc44e | 652 | log_debug("Keeping directory \"%s\".", sub_path); |
24f3a374 | 653 | continue; |
582deb84 | 654 | } |
24f3a374 | 655 | |
3b63d2d3 | 656 | /* Ignore ctime, we change it when deleting */ |
ddb439b8 | 657 | if (mtime_nsec != NSEC_INFINITY && mtime_nsec >= cutoff_nsec) { |
582deb84 ZJS |
658 | char a[FORMAT_TIMESTAMP_MAX]; |
659 | /* Follows spelling in stat(1). */ | |
660 | log_debug("Directory \"%s\": modify time %s is too new.", | |
661 | sub_path, | |
ddb439b8 | 662 | format_timestamp_style(a, sizeof(a), mtime_nsec / NSEC_PER_USEC, TIMESTAMP_US)); |
3b63d2d3 | 663 | continue; |
582deb84 ZJS |
664 | } |
665 | ||
ddb439b8 | 666 | if (atime_nsec != NSEC_INFINITY && atime_nsec >= cutoff_nsec) { |
582deb84 ZJS |
667 | char a[FORMAT_TIMESTAMP_MAX]; |
668 | log_debug("Directory \"%s\": access time %s is too new.", | |
669 | sub_path, | |
ddb439b8 LP |
670 | format_timestamp_style(a, sizeof(a), atime_nsec / NSEC_PER_USEC, TIMESTAMP_US)); |
671 | continue; | |
672 | } | |
673 | ||
674 | if (btime_nsec != NSEC_INFINITY && btime_nsec >= cutoff_nsec) { | |
675 | char a[FORMAT_TIMESTAMP_MAX]; | |
676 | log_debug("Directory \"%s\": birth time %s is too new.", | |
677 | sub_path, | |
678 | format_timestamp_style(a, sizeof(a), btime_nsec / NSEC_PER_USEC, TIMESTAMP_US)); | |
582deb84 ZJS |
679 | continue; |
680 | } | |
3b63d2d3 | 681 | |
61253220 ZJS |
682 | log_debug("Removing directory \"%s\".", sub_path); |
683 | if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) | |
920ce828 | 684 | if (!IN_SET(errno, ENOENT, ENOTEMPTY)) |
781bc44e | 685 | r = log_warning_errno(errno, "Failed to remove directory \"%s\", ignoring: %m", sub_path); |
3b63d2d3 LP |
686 | |
687 | } else { | |
a23fabc6 LP |
688 | /* Skip files for which the sticky bit is set. These are semantics we define, and are |
689 | * unknown elsewhere. See XDG_RUNTIME_DIR specification for details. */ | |
ca194a2a | 690 | if (sx.stx_mode & S_ISVTX) { |
582deb84 | 691 | log_debug("Skipping \"%s\": sticky bit set.", sub_path); |
9c73736d | 692 | continue; |
582deb84 | 693 | } |
9c73736d | 694 | |
20b6bb95 | 695 | if (mountpoint && |
ca194a2a LP |
696 | S_ISREG(sx.stx_mode) && |
697 | sx.stx_uid == 0 && | |
20b6bb95 LP |
698 | STR_IN_SET(dent->d_name, |
699 | ".journal", | |
700 | "aquota.user", | |
701 | "aquota.group")) { | |
702 | log_debug("Skipping \"%s\".", sub_path); | |
703 | continue; | |
704 | } | |
3b63d2d3 | 705 | |
17b90525 | 706 | /* Ignore sockets that are listed in /proc/net/unix */ |
ca194a2a | 707 | if (S_ISSOCK(sx.stx_mode) && unix_socket_alive(sub_path)) { |
582deb84 | 708 | log_debug("Skipping \"%s\": live socket.", sub_path); |
17b90525 | 709 | continue; |
582deb84 | 710 | } |
17b90525 | 711 | |
78ab08eb | 712 | /* Ignore device nodes */ |
ca194a2a | 713 | if (S_ISCHR(sx.stx_mode) || S_ISBLK(sx.stx_mode)) { |
582deb84 | 714 | log_debug("Skipping \"%s\": a device.", sub_path); |
78ab08eb | 715 | continue; |
582deb84 | 716 | } |
78ab08eb | 717 | |
a23fabc6 | 718 | /* Keep files on this level around if this is requested */ |
582deb84 ZJS |
719 | if (keep_this_level) { |
720 | log_debug("Keeping \"%s\".", sub_path); | |
24f3a374 | 721 | continue; |
582deb84 | 722 | } |
24f3a374 | 723 | |
ddb439b8 | 724 | if (mtime_nsec != NSEC_INFINITY && mtime_nsec >= cutoff_nsec) { |
582deb84 ZJS |
725 | char a[FORMAT_TIMESTAMP_MAX]; |
726 | /* Follows spelling in stat(1). */ | |
727 | log_debug("File \"%s\": modify time %s is too new.", | |
728 | sub_path, | |
ddb439b8 | 729 | format_timestamp_style(a, sizeof(a), mtime_nsec / NSEC_PER_USEC, TIMESTAMP_US)); |
3b63d2d3 | 730 | continue; |
582deb84 | 731 | } |
3b63d2d3 | 732 | |
ddb439b8 | 733 | if (atime_nsec != NSEC_INFINITY && atime_nsec >= cutoff_nsec) { |
582deb84 ZJS |
734 | char a[FORMAT_TIMESTAMP_MAX]; |
735 | log_debug("File \"%s\": access time %s is too new.", | |
736 | sub_path, | |
ddb439b8 | 737 | format_timestamp_style(a, sizeof(a), atime_nsec / NSEC_PER_USEC, TIMESTAMP_US)); |
582deb84 ZJS |
738 | continue; |
739 | } | |
3b63d2d3 | 740 | |
ddb439b8 | 741 | if (ctime_nsec != NSEC_INFINITY && ctime_nsec >= cutoff_nsec) { |
582deb84 ZJS |
742 | char a[FORMAT_TIMESTAMP_MAX]; |
743 | log_debug("File \"%s\": change time %s is too new.", | |
744 | sub_path, | |
ddb439b8 LP |
745 | format_timestamp_style(a, sizeof(a), ctime_nsec / NSEC_PER_USEC, TIMESTAMP_US)); |
746 | continue; | |
747 | } | |
748 | ||
749 | if (btime_nsec != NSEC_INFINITY && btime_nsec >= cutoff_nsec) { | |
750 | char a[FORMAT_TIMESTAMP_MAX]; | |
751 | log_debug("File \"%s\": birth time %s is too new.", | |
752 | sub_path, | |
753 | format_timestamp_style(a, sizeof(a), btime_nsec / NSEC_PER_USEC, TIMESTAMP_US)); | |
582deb84 | 754 | continue; |
3b63d2d3 LP |
755 | } |
756 | ||
781bc44e | 757 | log_debug("Removing \"%s\".", sub_path); |
582deb84 ZJS |
758 | if (unlinkat(dirfd(d), dent->d_name, 0) < 0) |
759 | if (errno != ENOENT) | |
781bc44e | 760 | r = log_warning_errno(errno, "Failed to remove \"%s\", ignoring: %m", sub_path); |
582deb84 | 761 | |
3b63d2d3 LP |
762 | deleted = true; |
763 | } | |
764 | } | |
765 | ||
766 | finish: | |
767 | if (deleted) { | |
ddb439b8 LP |
768 | char a[FORMAT_TIMESTAMP_MAX], m[FORMAT_TIMESTAMP_MAX]; |
769 | struct timespec ts[2]; | |
76e15a9c | 770 | |
582deb84 ZJS |
771 | log_debug("Restoring access and modification time on \"%s\": %s, %s", |
772 | p, | |
ddb439b8 LP |
773 | format_timestamp_style(a, sizeof(a), self_atime_nsec / NSEC_PER_USEC, TIMESTAMP_US), |
774 | format_timestamp_style(m, sizeof(m), self_mtime_nsec / NSEC_PER_USEC, TIMESTAMP_US)); | |
775 | ||
776 | timespec_store_nsec(ts + 0, self_atime_nsec); | |
777 | timespec_store_nsec(ts + 1, self_mtime_nsec); | |
76e15a9c LP |
778 | |
779 | /* Restore original directory timestamps */ | |
ddb439b8 | 780 | if (futimens(dirfd(d), ts) < 0) |
76e15a9c | 781 | log_warning_errno(errno, "Failed to revert timestamps of '%s', ignoring: %m", p); |
3b63d2d3 LP |
782 | } |
783 | ||
3b63d2d3 LP |
784 | return r; |
785 | } | |
786 | ||
5579f856 LP |
787 | static bool dangerous_hardlinks(void) { |
788 | _cleanup_free_ char *value = NULL; | |
789 | static int cached = -1; | |
790 | int r; | |
791 | ||
792 | /* Check whether the fs.protected_hardlinks sysctl is on. If we can't determine it we assume its off, as that's | |
793 | * what the upstream default is. */ | |
794 | ||
795 | if (cached >= 0) | |
796 | return cached; | |
797 | ||
798 | r = read_one_line_file("/proc/sys/fs/protected_hardlinks", &value); | |
799 | if (r < 0) { | |
800 | log_debug_errno(r, "Failed to read fs.protected_hardlinks sysctl: %m"); | |
801 | return true; | |
802 | } | |
803 | ||
804 | r = parse_boolean(value); | |
805 | if (r < 0) { | |
806 | log_debug_errno(r, "Failed to parse fs.protected_hardlinks sysctl: %m"); | |
807 | return true; | |
808 | } | |
809 | ||
810 | cached = r == 0; | |
811 | return cached; | |
812 | } | |
813 | ||
774f79b5 | 814 | static bool hardlink_vulnerable(const struct stat *st) { |
5579f856 LP |
815 | assert(st); |
816 | ||
817 | return !S_ISDIR(st->st_mode) && st->st_nlink > 1 && dangerous_hardlinks(); | |
818 | } | |
819 | ||
8b364a38 LP |
820 | static mode_t process_mask_perms(mode_t mode, mode_t current) { |
821 | ||
822 | if ((current & 0111) == 0) | |
823 | mode &= ~0111; | |
824 | if ((current & 0222) == 0) | |
825 | mode &= ~0222; | |
826 | if ((current & 0444) == 0) | |
827 | mode &= ~0444; | |
828 | if (!S_ISDIR(current)) | |
829 | mode &= ~07000; /* remove sticky/sgid/suid bit, unless directory */ | |
830 | ||
831 | return mode; | |
832 | } | |
833 | ||
9d874aec | 834 | static int fd_set_perms(Item *i, int fd, const char *path, const struct stat *st) { |
b206ac8e | 835 | struct stat stbuf; |
a9f55d0e LP |
836 | mode_t new_mode; |
837 | bool do_chown; | |
dee00c19 | 838 | int r; |
1924a97d | 839 | |
cde684a2 | 840 | assert(i); |
936f6bdb | 841 | assert(fd); |
4dc7bfdf | 842 | assert(path); |
48b8aaa8 | 843 | |
936f6bdb FB |
844 | if (!i->mode_set && !i->uid_set && !i->gid_set) |
845 | goto shortcut; | |
1924a97d | 846 | |
b206ac8e FB |
847 | if (!st) { |
848 | if (fstat(fd, &stbuf) < 0) | |
849 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
850 | st = &stbuf; | |
851 | } | |
852 | ||
baaa35ad ZJS |
853 | if (hardlink_vulnerable(st)) |
854 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
855 | "Refusing to set permissions on hardlinked file %s while the fs.protected_hardlinks sysctl is turned off.", | |
856 | path); | |
5579f856 | 857 | |
a9f55d0e LP |
858 | /* Do we need a chown()? */ |
859 | do_chown = | |
860 | (i->uid_set && i->uid != st->st_uid) || | |
861 | (i->gid_set && i->gid != st->st_gid); | |
8b364a38 | 862 | |
a9f55d0e LP |
863 | /* Calculate the mode to apply */ |
864 | new_mode = i->mode_set ? (i->mask_perms ? | |
865 | process_mask_perms(i->mode, st->st_mode) : | |
866 | i->mode) : | |
867 | (st->st_mode & 07777); | |
868 | ||
869 | if (i->mode_set && do_chown) { | |
870 | /* Before we issue the chmod() let's reduce the access mode to the common bits of the old and | |
871 | * the new mode. That way there's no time window where the file exists under the old owner | |
872 | * with more than the old access modes — and not under the new owner with more than the new | |
873 | * access modes either. */ | |
8b364a38 | 874 | |
936f6bdb | 875 | if (S_ISLNK(st->st_mode)) |
a9f55d0e | 876 | log_debug("Skipping temporary mode fix for symlink %s.", path); |
51207ca1 | 877 | else { |
a9f55d0e | 878 | mode_t m = new_mode & st->st_mode; /* Mask new mode by old mode */ |
abef3f91 | 879 | |
a9f55d0e LP |
880 | if (((m ^ st->st_mode) & 07777) == 0) |
881 | log_debug("\"%s\" matches temporary mode %o already.", path, m); | |
48b8aaa8 | 882 | else { |
a9f55d0e | 883 | log_debug("Temporarily changing \"%s\" to mode %o.", path, m); |
dee00c19 LP |
884 | r = fchmod_opath(fd, m); |
885 | if (r < 0) | |
886 | return log_error_errno(r, "fchmod() of %s failed: %m", path); | |
48b8aaa8 | 887 | } |
062e01bb | 888 | } |
51207ca1 | 889 | } |
062e01bb | 890 | |
a9f55d0e | 891 | if (do_chown) { |
51207ca1 LP |
892 | log_debug("Changing \"%s\" to owner "UID_FMT":"GID_FMT, |
893 | path, | |
894 | i->uid_set ? i->uid : UID_INVALID, | |
895 | i->gid_set ? i->gid : GID_INVALID); | |
896 | ||
936f6bdb FB |
897 | if (fchownat(fd, |
898 | "", | |
899 | i->uid_set ? i->uid : UID_INVALID, | |
900 | i->gid_set ? i->gid : GID_INVALID, | |
901 | AT_EMPTY_PATH) < 0) | |
902 | return log_error_errno(errno, "fchownat() of %s failed: %m", path); | |
582deb84 | 903 | } |
062e01bb | 904 | |
a9f55d0e LP |
905 | /* Now, apply the final mode. We do this in two cases: when the user set a mode explicitly, or after a |
906 | * chown(), since chown()'s mangle the access mode in regards to sgid/suid in some conditions. */ | |
907 | if (i->mode_set || do_chown) { | |
908 | if (S_ISLNK(st->st_mode)) | |
909 | log_debug("Skipping mode fix for symlink %s.", path); | |
910 | else { | |
911 | /* Check if the chmod() is unnecessary. Note that if we did a chown() before we always | |
912 | * chmod() here again, since it might have mangled the bits. */ | |
913 | if (!do_chown && ((new_mode ^ st->st_mode) & 07777) == 0) | |
914 | log_debug("\"%s\" matches mode %o already.", path, new_mode); | |
915 | else { | |
916 | log_debug("Changing \"%s\" to mode %o.", path, new_mode); | |
dee00c19 LP |
917 | r = fchmod_opath(fd, new_mode); |
918 | if (r < 0) | |
919 | return log_error_errno(r, "fchmod() of %s failed: %m", path); | |
a9f55d0e LP |
920 | } |
921 | } | |
922 | } | |
923 | ||
59793c8f | 924 | shortcut: |
08c84981 | 925 | return label_fix(path, 0); |
062e01bb MS |
926 | } |
927 | ||
5ec9d065 FB |
928 | static int path_open_parent_safe(const char *path) { |
929 | _cleanup_free_ char *dn = NULL; | |
a5648b80 | 930 | int r, fd; |
5ec9d065 | 931 | |
baaa35ad ZJS |
932 | if (path_equal(path, "/") || !path_is_normalized(path)) |
933 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
934 | "Failed to open parent of '%s': invalid path.", | |
935 | path); | |
5ec9d065 FB |
936 | |
937 | dn = dirname_malloc(path); | |
938 | if (!dn) | |
939 | return log_oom(); | |
940 | ||
a5648b80 ZJS |
941 | r = chase_symlinks(dn, arg_root, CHASE_SAFE|CHASE_WARN, NULL, &fd); |
942 | if (r < 0 && r != -ENOLINK) | |
943 | return log_error_errno(r, "Failed to validate path %s: %m", path); | |
5ec9d065 | 944 | |
a5648b80 | 945 | return r < 0 ? r : fd; |
5ec9d065 FB |
946 | } |
947 | ||
addc3e30 | 948 | static int path_open_safe(const char *path) { |
a5648b80 | 949 | int r, fd; |
addc3e30 FB |
950 | |
951 | /* path_open_safe() returns a file descriptor opened with O_PATH after | |
952 | * verifying that the path doesn't contain unsafe transitions, except | |
953 | * for its final component as the function does not follow symlink. */ | |
954 | ||
955 | assert(path); | |
956 | ||
baaa35ad ZJS |
957 | if (!path_is_normalized(path)) |
958 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
959 | "Failed to open invalid path '%s'.", | |
960 | path); | |
addc3e30 | 961 | |
a5648b80 ZJS |
962 | r = chase_symlinks(path, arg_root, CHASE_SAFE|CHASE_WARN|CHASE_NOFOLLOW, NULL, &fd); |
963 | if (r < 0 && r != -ENOLINK) | |
964 | return log_error_errno(r, "Failed to validate path %s: %m", path); | |
addc3e30 | 965 | |
a5648b80 | 966 | return r < 0 ? r : fd; |
addc3e30 FB |
967 | } |
968 | ||
936f6bdb FB |
969 | static int path_set_perms(Item *i, const char *path) { |
970 | _cleanup_close_ int fd = -1; | |
936f6bdb FB |
971 | |
972 | assert(i); | |
973 | assert(path); | |
974 | ||
addc3e30 | 975 | fd = path_open_safe(path); |
54946021 | 976 | if (fd < 0) |
addc3e30 | 977 | return fd; |
d460ba18 | 978 | |
9d874aec | 979 | return fd_set_perms(i, fd, path, NULL); |
936f6bdb FB |
980 | } |
981 | ||
bd550f78 | 982 | static int parse_xattrs_from_arg(Item *i) { |
ebf4e801 MW |
983 | const char *p; |
984 | int r; | |
985 | ||
986 | assert(i); | |
505ef0e3 | 987 | assert(i->argument); |
ebf4e801 | 988 | |
ebf4e801 MW |
989 | p = i->argument; |
990 | ||
4034a06d | 991 | for (;;) { |
4cef1923 | 992 | _cleanup_free_ char *name = NULL, *value = NULL, *xattr = NULL; |
4034a06d | 993 | |
4ec85141 | 994 | r = extract_first_word(&p, &xattr, NULL, EXTRACT_UNQUOTE|EXTRACT_CUNESCAPE); |
4034a06d | 995 | if (r < 0) |
bd550f78 | 996 | log_warning_errno(r, "Failed to parse extended attribute '%s', ignoring: %m", p); |
4034a06d LP |
997 | if (r <= 0) |
998 | break; | |
505ef0e3 | 999 | |
4cef1923 | 1000 | r = split_pair(xattr, "=", &name, &value); |
ebf4e801 | 1001 | if (r < 0) { |
4034a06d | 1002 | log_warning_errno(r, "Failed to parse extended attribute, ignoring: %s", xattr); |
ebf4e801 MW |
1003 | continue; |
1004 | } | |
505ef0e3 | 1005 | |
4034a06d | 1006 | if (isempty(name) || isempty(value)) { |
bd550f78 | 1007 | log_warning("Malformed extended attribute found, ignoring: %s", xattr); |
ebf4e801 MW |
1008 | continue; |
1009 | } | |
505ef0e3 | 1010 | |
4034a06d | 1011 | if (strv_push_pair(&i->xattrs, name, value) < 0) |
ebf4e801 | 1012 | return log_oom(); |
505ef0e3 | 1013 | |
4034a06d | 1014 | name = value = NULL; |
ebf4e801 MW |
1015 | } |
1016 | ||
4034a06d | 1017 | return 0; |
ebf4e801 MW |
1018 | } |
1019 | ||
9d874aec | 1020 | static int fd_set_xattrs(Item *i, int fd, const char *path, const struct stat *st) { |
34d26777 | 1021 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
ebf4e801 MW |
1022 | char **name, **value; |
1023 | ||
1024 | assert(i); | |
936f6bdb | 1025 | assert(fd); |
4dc7bfdf | 1026 | assert(path); |
936f6bdb FB |
1027 | |
1028 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); | |
ebf4e801 | 1029 | |
ebf4e801 | 1030 | STRV_FOREACH_PAIR(name, value, i->xattrs) { |
bd550f78 | 1031 | log_debug("Setting extended attribute '%s=%s' on %s.", *name, *value, path); |
936f6bdb | 1032 | if (setxattr(procfs_path, *name, *value, strlen(*value), 0) < 0) |
25f027c5 ZJS |
1033 | return log_error_errno(errno, "Setting extended attribute %s=%s on %s failed: %m", |
1034 | *name, *value, path); | |
ebf4e801 MW |
1035 | } |
1036 | return 0; | |
1037 | } | |
1038 | ||
936f6bdb FB |
1039 | static int path_set_xattrs(Item *i, const char *path) { |
1040 | _cleanup_close_ int fd = -1; | |
1041 | ||
1042 | assert(i); | |
1043 | assert(path); | |
1044 | ||
addc3e30 | 1045 | fd = path_open_safe(path); |
936f6bdb | 1046 | if (fd < 0) |
addc3e30 | 1047 | return fd; |
936f6bdb | 1048 | |
9d874aec | 1049 | return fd_set_xattrs(i, fd, path, NULL); |
936f6bdb FB |
1050 | } |
1051 | ||
bd550f78 | 1052 | static int parse_acls_from_arg(Item *item) { |
349cc4a5 | 1053 | #if HAVE_ACL |
f8eeeaf9 | 1054 | int r; |
f8eeeaf9 ZJS |
1055 | |
1056 | assert(item); | |
1057 | ||
c55ac248 | 1058 | /* If append_or_force (= modify) is set, we will not modify the acl |
50d9e46d | 1059 | * afterwards, so the mask can be added now if necessary. */ |
bd550f78 | 1060 | |
c55ac248 | 1061 | r = parse_acl(item->argument, &item->acl_access, &item->acl_default, !item->append_or_force); |
f8eeeaf9 | 1062 | if (r < 0) |
4034a06d | 1063 | log_warning_errno(r, "Failed to parse ACL \"%s\": %m. Ignoring", item->argument); |
f8eeeaf9 | 1064 | #else |
6008336f | 1065 | log_warning("ACLs are not supported. Ignoring."); |
f8eeeaf9 ZJS |
1066 | #endif |
1067 | ||
1068 | return 0; | |
1069 | } | |
1070 | ||
349cc4a5 | 1071 | #if HAVE_ACL |
48b8aaa8 LP |
1072 | static int path_set_acl(const char *path, const char *pretty, acl_type_t type, acl_t acl, bool modify) { |
1073 | _cleanup_(acl_free_charpp) char *t = NULL; | |
dd4105b0 | 1074 | _cleanup_(acl_freep) acl_t dup = NULL; |
50d9e46d ZJS |
1075 | int r; |
1076 | ||
d873e877 HPD |
1077 | /* Returns 0 for success, positive error if already warned, |
1078 | * negative error otherwise. */ | |
1079 | ||
50d9e46d | 1080 | if (modify) { |
dd4105b0 | 1081 | r = acls_for_file(path, type, acl, &dup); |
50d9e46d ZJS |
1082 | if (r < 0) |
1083 | return r; | |
50d9e46d | 1084 | |
dd4105b0 ZJS |
1085 | r = calc_acl_mask_if_needed(&dup); |
1086 | if (r < 0) | |
1087 | return r; | |
1088 | } else { | |
1089 | dup = acl_dup(acl); | |
1090 | if (!dup) | |
1091 | return -errno; | |
1092 | ||
1093 | /* the mask was already added earlier if needed */ | |
1094 | } | |
1095 | ||
1096 | r = add_base_acls_if_needed(&dup, path); | |
1097 | if (r < 0) | |
1098 | return r; | |
1099 | ||
582deb84 | 1100 | t = acl_to_any_text(dup, NULL, ',', TEXT_ABBREVIATE); |
48b8aaa8 | 1101 | log_debug("Setting %s ACL %s on %s.", |
582deb84 | 1102 | type == ACL_TYPE_ACCESS ? "access" : "default", |
48b8aaa8 | 1103 | strna(t), pretty); |
50d9e46d | 1104 | |
582deb84 | 1105 | r = acl_set_file(path, type, dup); |
3045c416 PC |
1106 | if (r < 0) { |
1107 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
1108 | /* No error if filesystem doesn't support ACLs. Return negative. */ | |
1109 | return -errno; | |
1110 | else | |
1111 | /* Return positive to indicate we already warned */ | |
1112 | return -log_error_errno(errno, | |
1113 | "Setting %s ACL \"%s\" on %s failed: %m", | |
1114 | type == ACL_TYPE_ACCESS ? "access" : "default", | |
1115 | strna(t), pretty); | |
1116 | } | |
582deb84 | 1117 | return 0; |
50d9e46d | 1118 | } |
35888b67 | 1119 | #endif |
50d9e46d | 1120 | |
9d874aec | 1121 | static int fd_set_acls(Item *item, int fd, const char *path, const struct stat *st) { |
d873e877 | 1122 | int r = 0; |
349cc4a5 | 1123 | #if HAVE_ACL |
34d26777 | 1124 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
b206ac8e | 1125 | struct stat stbuf; |
48b8aaa8 | 1126 | |
f8eeeaf9 | 1127 | assert(item); |
936f6bdb | 1128 | assert(fd); |
4dc7bfdf | 1129 | assert(path); |
48b8aaa8 | 1130 | |
b206ac8e FB |
1131 | if (!st) { |
1132 | if (fstat(fd, &stbuf) < 0) | |
1133 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
1134 | st = &stbuf; | |
1135 | } | |
1136 | ||
baaa35ad ZJS |
1137 | if (hardlink_vulnerable(st)) |
1138 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
1139 | "Refusing to set ACLs on hardlinked file %s while the fs.protected_hardlinks sysctl is turned off.", | |
1140 | path); | |
5579f856 | 1141 | |
936f6bdb | 1142 | if (S_ISLNK(st->st_mode)) { |
48b8aaa8 LP |
1143 | log_debug("Skipping ACL fix for symlink %s.", path); |
1144 | return 0; | |
1145 | } | |
1146 | ||
936f6bdb | 1147 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); |
48b8aaa8 | 1148 | |
d873e877 | 1149 | if (item->acl_access) |
c55ac248 | 1150 | r = path_set_acl(procfs_path, path, ACL_TYPE_ACCESS, item->acl_access, item->append_or_force); |
f8eeeaf9 | 1151 | |
2667385b RM |
1152 | /* set only default acls to folders */ |
1153 | if (r == 0 && item->acl_default && S_ISDIR(st->st_mode)) | |
c55ac248 | 1154 | r = path_set_acl(procfs_path, path, ACL_TYPE_DEFAULT, item->acl_default, item->append_or_force); |
f8eeeaf9 | 1155 | |
3045c416 PC |
1156 | if (ERRNO_IS_NOT_SUPPORTED(r)) { |
1157 | log_debug_errno(r, "ACLs not supported by file system at %s", path); | |
1158 | return 0; | |
1159 | } | |
1160 | ||
d873e877 HPD |
1161 | if (r > 0) |
1162 | return -r; /* already warned */ | |
f8606626 LP |
1163 | |
1164 | /* The above procfs paths don't work if /proc is not mounted. */ | |
1165 | if (r == -ENOENT && proc_mounted() == 0) | |
1166 | r = -ENOSYS; | |
1167 | ||
936f6bdb FB |
1168 | if (r < 0) |
1169 | return log_error_errno(r, "ACL operation on \"%s\" failed: %m", path); | |
d873e877 HPD |
1170 | #endif |
1171 | return r; | |
f8eeeaf9 ZJS |
1172 | } |
1173 | ||
936f6bdb FB |
1174 | static int path_set_acls(Item *item, const char *path) { |
1175 | int r = 0; | |
545cdb90 | 1176 | #if HAVE_ACL |
936f6bdb | 1177 | _cleanup_close_ int fd = -1; |
936f6bdb FB |
1178 | |
1179 | assert(item); | |
1180 | assert(path); | |
1181 | ||
addc3e30 | 1182 | fd = path_open_safe(path); |
936f6bdb | 1183 | if (fd < 0) |
addc3e30 | 1184 | return fd; |
936f6bdb | 1185 | |
9d874aec | 1186 | r = fd_set_acls(item, fd, path, NULL); |
545cdb90 YW |
1187 | #endif |
1188 | return r; | |
1189 | } | |
936f6bdb | 1190 | |
bd550f78 | 1191 | static int parse_attribute_from_arg(Item *item) { |
88ec4dfa LP |
1192 | |
1193 | static const struct { | |
1194 | char character; | |
1195 | unsigned value; | |
1196 | } attributes[] = { | |
1197 | { 'A', FS_NOATIME_FL }, /* do not update atime */ | |
1198 | { 'S', FS_SYNC_FL }, /* Synchronous updates */ | |
1199 | { 'D', FS_DIRSYNC_FL }, /* dirsync behaviour (directories only) */ | |
1200 | { 'a', FS_APPEND_FL }, /* writes to file may only append */ | |
1201 | { 'c', FS_COMPR_FL }, /* Compress file */ | |
1202 | { 'd', FS_NODUMP_FL }, /* do not dump file */ | |
8c35b2ca | 1203 | { 'e', FS_EXTENT_FL }, /* Extents */ |
88ec4dfa LP |
1204 | { 'i', FS_IMMUTABLE_FL }, /* Immutable file */ |
1205 | { 'j', FS_JOURNAL_DATA_FL }, /* Reserved for ext3 */ | |
1206 | { 's', FS_SECRM_FL }, /* Secure deletion */ | |
1207 | { 'u', FS_UNRM_FL }, /* Undelete */ | |
1208 | { 't', FS_NOTAIL_FL }, /* file tail should not be merged */ | |
13e785f7 | 1209 | { 'T', FS_TOPDIR_FL }, /* Top of directory hierarchies */ |
88ec4dfa | 1210 | { 'C', FS_NOCOW_FL }, /* Do not cow file */ |
75006470 | 1211 | { 'P', FS_PROJINHERIT_FL }, /* Inherit the quota project ID */ |
22c3a6ca | 1212 | }; |
88ec4dfa | 1213 | |
22c3a6ca GB |
1214 | enum { |
1215 | MODE_ADD, | |
1216 | MODE_DEL, | |
1217 | MODE_SET | |
1218 | } mode = MODE_ADD; | |
22c3a6ca | 1219 | |
88ec4dfa LP |
1220 | unsigned value = 0, mask = 0; |
1221 | const char *p; | |
22c3a6ca | 1222 | |
88ec4dfa LP |
1223 | assert(item); |
1224 | ||
1225 | p = item->argument; | |
1226 | if (p) { | |
1227 | if (*p == '+') { | |
1228 | mode = MODE_ADD; | |
1229 | p++; | |
1230 | } else if (*p == '-') { | |
1231 | mode = MODE_DEL; | |
1232 | p++; | |
1233 | } else if (*p == '=') { | |
1234 | mode = MODE_SET; | |
1235 | p++; | |
1236 | } | |
22c3a6ca GB |
1237 | } |
1238 | ||
baaa35ad ZJS |
1239 | if (isempty(p) && mode != MODE_SET) |
1240 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1241 | "Setting file attribute on '%s' needs an attribute specification.", | |
1242 | item->path); | |
88ec4dfa LP |
1243 | |
1244 | for (; p && *p ; p++) { | |
1245 | unsigned i, v; | |
1246 | ||
1247 | for (i = 0; i < ELEMENTSOF(attributes); i++) | |
1248 | if (*p == attributes[i].character) | |
1249 | break; | |
1250 | ||
baaa35ad ZJS |
1251 | if (i >= ELEMENTSOF(attributes)) |
1252 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1253 | "Unknown file attribute '%c' on '%s'.", | |
1254 | *p, item->path); | |
88ec4dfa LP |
1255 | |
1256 | v = attributes[i].value; | |
1257 | ||
3742095b | 1258 | SET_FLAG(value, v, IN_SET(mode, MODE_ADD, MODE_SET)); |
88ec4dfa LP |
1259 | |
1260 | mask |= v; | |
22c3a6ca GB |
1261 | } |
1262 | ||
1263 | if (mode == MODE_SET) | |
d629ba70 | 1264 | mask |= CHATTR_ALL_FL; |
22c3a6ca | 1265 | |
88ec4dfa | 1266 | assert(mask != 0); |
22c3a6ca | 1267 | |
88ec4dfa LP |
1268 | item->attribute_mask = mask; |
1269 | item->attribute_value = value; | |
1270 | item->attribute_set = true; | |
22c3a6ca GB |
1271 | |
1272 | return 0; | |
22c3a6ca GB |
1273 | } |
1274 | ||
9d874aec | 1275 | static int fd_set_attribute(Item *item, int fd, const char *path, const struct stat *st) { |
936f6bdb | 1276 | _cleanup_close_ int procfs_fd = -1; |
b206ac8e | 1277 | struct stat stbuf; |
88ec4dfa LP |
1278 | unsigned f; |
1279 | int r; | |
22c3a6ca | 1280 | |
4dc7bfdf FB |
1281 | assert(item); |
1282 | assert(fd); | |
1283 | assert(path); | |
1284 | ||
88ec4dfa | 1285 | if (!item->attribute_set || item->attribute_mask == 0) |
22c3a6ca | 1286 | return 0; |
22c3a6ca | 1287 | |
b206ac8e FB |
1288 | if (!st) { |
1289 | if (fstat(fd, &stbuf) < 0) | |
1290 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
1291 | st = &stbuf; | |
1292 | } | |
1293 | ||
88ec4dfa LP |
1294 | /* Issuing the file attribute ioctls on device nodes is not |
1295 | * safe, as that will be delivered to the drivers, not the | |
1296 | * file system containing the device node. */ | |
baaa35ad ZJS |
1297 | if (!S_ISREG(st->st_mode) && !S_ISDIR(st->st_mode)) |
1298 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1299 | "Setting file flags is only supported on regular files and directories, cannot set on '%s'.", | |
1300 | path); | |
88ec4dfa LP |
1301 | |
1302 | f = item->attribute_value & item->attribute_mask; | |
1303 | ||
1304 | /* Mask away directory-specific flags */ | |
936f6bdb | 1305 | if (!S_ISDIR(st->st_mode)) |
22c3a6ca | 1306 | f &= ~FS_DIRSYNC_FL; |
88ec4dfa | 1307 | |
f2324783 | 1308 | procfs_fd = fd_reopen(fd, O_RDONLY|O_CLOEXEC|O_NOATIME); |
936f6bdb | 1309 | if (procfs_fd < 0) |
c3e03778 | 1310 | return log_error_errno(procfs_fd, "Failed to re-open '%s': %m", path); |
936f6bdb | 1311 | |
94566540 YW |
1312 | unsigned previous, current; |
1313 | r = chattr_full(NULL, procfs_fd, f, item->attribute_mask, &previous, ¤t, true); | |
1314 | if (r == -ENOANO) | |
d1a61dfa | 1315 | log_warning("Cannot set file attributes for '%s', maybe due to incompatibility in specified attributes, " |
94566540 YW |
1316 | "previous=0x%08x, current=0x%08x, expected=0x%08x, ignoring.", |
1317 | path, previous, current, (previous & ~item->attribute_mask) | (f & item->attribute_mask)); | |
1318 | else if (r < 0) | |
1319 | log_full_errno(ERRNO_IS_NOT_SUPPORTED(r) ? LOG_DEBUG : LOG_WARNING, r, | |
1320 | "Cannot set file attributes for '%s', value=0x%08x, mask=0x%08x, ignoring: %m", | |
ad75a97f | 1321 | path, item->attribute_value, item->attribute_mask); |
22c3a6ca GB |
1322 | |
1323 | return 0; | |
1324 | } | |
1325 | ||
936f6bdb FB |
1326 | static int path_set_attribute(Item *item, const char *path) { |
1327 | _cleanup_close_ int fd = -1; | |
936f6bdb FB |
1328 | |
1329 | if (!item->attribute_set || item->attribute_mask == 0) | |
1330 | return 0; | |
1331 | ||
addc3e30 | 1332 | fd = path_open_safe(path); |
936f6bdb | 1333 | if (fd < 0) |
addc3e30 | 1334 | return fd; |
936f6bdb | 1335 | |
9d874aec | 1336 | return fd_set_attribute(item, fd, path, NULL); |
936f6bdb FB |
1337 | } |
1338 | ||
d4e9eb91 | 1339 | static int write_one_file(Item *i, const char *path) { |
551470ec FB |
1340 | _cleanup_close_ int fd = -1, dir_fd = -1; |
1341 | char *bn; | |
1baaf8aa | 1342 | int r; |
31c84ff1 FB |
1343 | |
1344 | assert(i); | |
1345 | assert(path); | |
1346 | assert(i->argument); | |
1347 | assert(i->type == WRITE_FILE); | |
1348 | ||
551470ec FB |
1349 | /* Validate the path and keep the fd on the directory for opening the |
1350 | * file so we're sure that it can't be changed behind our back. */ | |
1351 | dir_fd = path_open_parent_safe(path); | |
1352 | if (dir_fd < 0) | |
1353 | return dir_fd; | |
1354 | ||
1355 | bn = basename(path); | |
1356 | ||
31c84ff1 | 1357 | /* Follows symlinks */ |
1baaf8aa LP |
1358 | fd = openat(dir_fd, bn, |
1359 | O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY|(i->append_or_force ? O_APPEND : 0), | |
1360 | i->mode); | |
31c84ff1 FB |
1361 | if (fd < 0) { |
1362 | if (errno == ENOENT) { | |
1363 | log_debug_errno(errno, "Not writing missing file \"%s\": %m", path); | |
1364 | return 0; | |
1365 | } | |
1baaf8aa LP |
1366 | |
1367 | if (i->allow_failure) | |
1368 | return log_debug_errno(errno, "Failed to open file \"%s\", ignoring: %m", path); | |
1369 | ||
31c84ff1 FB |
1370 | return log_error_errno(errno, "Failed to open file \"%s\": %m", path); |
1371 | } | |
1372 | ||
1373 | /* 'w' is allowed to write into any kind of files. */ | |
1374 | log_debug("Writing to \"%s\".", path); | |
1375 | ||
1376 | r = loop_write(fd, i->argument, strlen(i->argument), false); | |
1377 | if (r < 0) | |
1378 | return log_error_errno(r, "Failed to write file \"%s\": %m", path); | |
1379 | ||
9d874aec | 1380 | return fd_set_perms(i, fd, path, NULL); |
31c84ff1 FB |
1381 | } |
1382 | ||
1383 | static int create_file(Item *i, const char *path) { | |
5ec9d065 FB |
1384 | _cleanup_close_ int fd = -1, dir_fd = -1; |
1385 | struct stat stbuf, *st = NULL; | |
1386 | int r = 0; | |
1387 | char *bn; | |
d4e9eb91 | 1388 | |
874f1947 LP |
1389 | assert(i); |
1390 | assert(path); | |
5ec9d065 FB |
1391 | assert(i->type == CREATE_FILE); |
1392 | ||
1393 | /* 'f' operates on regular files exclusively. */ | |
1394 | ||
1395 | /* Validate the path and keep the fd on the directory for opening the | |
1396 | * file so we're sure that it can't be changed behind our back. */ | |
1397 | dir_fd = path_open_parent_safe(path); | |
1398 | if (dir_fd < 0) | |
1399 | return dir_fd; | |
874f1947 | 1400 | |
5ec9d065 | 1401 | bn = basename(path); |
d4e9eb91 | 1402 | |
43ad6e31 | 1403 | RUN_WITH_UMASK(0000) { |
ecabcf8b | 1404 | mac_selinux_create_file_prepare(path, S_IFREG); |
5ec9d065 | 1405 | fd = openat(dir_fd, bn, O_CREAT|O_EXCL|O_NOFOLLOW|O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode); |
ecabcf8b | 1406 | mac_selinux_create_file_clear(); |
5c0d398d | 1407 | } |
d4e9eb91 DR |
1408 | |
1409 | if (fd < 0) { | |
5ec9d065 FB |
1410 | /* Even on a read-only filesystem, open(2) returns EEXIST if the |
1411 | * file already exists. It returns EROFS only if it needs to | |
1412 | * create the file. */ | |
1413 | if (errno != EEXIST) | |
1414 | return log_error_errno(errno, "Failed to create file %s: %m", path); | |
1415 | ||
1416 | /* Re-open the file. At that point it must exist since open(2) | |
1417 | * failed with EEXIST. We still need to check if the perms/mode | |
1418 | * need to be changed. For read-only filesystems, we let | |
1419 | * fd_set_perms() report the error if the perms need to be | |
1420 | * modified. */ | |
1421 | fd = openat(dir_fd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH, i->mode); | |
1422 | if (fd < 0) | |
1423 | return log_error_errno(errno, "Failed to re-open file %s: %m", path); | |
1424 | ||
1425 | if (fstat(fd, &stbuf) < 0) | |
1426 | return log_error_errno(errno, "stat(%s) failed: %m", path); | |
1427 | ||
d7a0f1f4 FS |
1428 | if (!S_ISREG(stbuf.st_mode)) |
1429 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
1430 | "%s exists and is not a regular file.", | |
1431 | path); | |
d4e9eb91 | 1432 | |
5ec9d065 FB |
1433 | st = &stbuf; |
1434 | } else { | |
1435 | ||
1436 | log_debug("\"%s\" has been created.", path); | |
1437 | ||
1438 | if (i->argument) { | |
1439 | log_debug("Writing to \"%s\".", path); | |
f44b28fd | 1440 | |
5ec9d065 FB |
1441 | r = loop_write(fd, i->argument, strlen(i->argument), false); |
1442 | if (r < 0) | |
1443 | return log_error_errno(r, "Failed to write file \"%s\": %m", path); | |
1444 | } | |
d4e9eb91 DR |
1445 | } |
1446 | ||
9d874aec | 1447 | return fd_set_perms(i, fd, path, st); |
5ec9d065 | 1448 | } |
d4e9eb91 | 1449 | |
5ec9d065 | 1450 | static int truncate_file(Item *i, const char *path) { |
14ab804e | 1451 | _cleanup_close_ int fd = -1, dir_fd = -1; |
5ec9d065 FB |
1452 | struct stat stbuf, *st = NULL; |
1453 | bool erofs = false; | |
1454 | int r = 0; | |
14ab804e | 1455 | char *bn; |
5ec9d065 FB |
1456 | |
1457 | assert(i); | |
1458 | assert(path); | |
eccebf4b | 1459 | assert(i->type == TRUNCATE_FILE || (i->type == CREATE_FILE && i->append_or_force)); |
d4e9eb91 | 1460 | |
5ec9d065 FB |
1461 | /* We want to operate on regular file exclusively especially since |
1462 | * O_TRUNC is unspecified if the file is neither a regular file nor a | |
1463 | * fifo nor a terminal device. Therefore we first open the file and make | |
1464 | * sure it's a regular one before truncating it. */ | |
3612fbc1 | 1465 | |
14ab804e FB |
1466 | /* Validate the path and keep the fd on the directory for opening the |
1467 | * file so we're sure that it can't be changed behind our back. */ | |
1468 | dir_fd = path_open_parent_safe(path); | |
1469 | if (dir_fd < 0) | |
1470 | return dir_fd; | |
1471 | ||
1472 | bn = basename(path); | |
1473 | ||
5ec9d065 FB |
1474 | RUN_WITH_UMASK(0000) { |
1475 | mac_selinux_create_file_prepare(path, S_IFREG); | |
14ab804e | 1476 | fd = openat(dir_fd, bn, O_CREAT|O_NOFOLLOW|O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode); |
5ec9d065 FB |
1477 | mac_selinux_create_file_clear(); |
1478 | } | |
1479 | ||
1480 | if (fd < 0) { | |
1481 | if (errno != EROFS) | |
1482 | return log_error_errno(errno, "Failed to open/create file %s: %m", path); | |
1483 | ||
1484 | /* On a read-only filesystem, we don't want to fail if the | |
1485 | * target is already empty and the perms are set. So we still | |
1486 | * proceed with the sanity checks and let the remaining | |
1487 | * operations fail with EROFS if they try to modify the target | |
1488 | * file. */ | |
1489 | ||
14ab804e | 1490 | fd = openat(dir_fd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH, i->mode); |
5ec9d065 | 1491 | if (fd < 0) { |
d7a0f1f4 FS |
1492 | if (errno == ENOENT) |
1493 | return log_error_errno(SYNTHETIC_ERRNO(EROFS), | |
1494 | "Cannot create file %s on a read-only file system.", | |
1495 | path); | |
5ec9d065 FB |
1496 | |
1497 | return log_error_errno(errno, "Failed to re-open file %s: %m", path); | |
1498 | } | |
1499 | ||
1500 | erofs = true; | |
1501 | } | |
1502 | ||
1503 | if (fstat(fd, &stbuf) < 0) | |
4a62c710 | 1504 | return log_error_errno(errno, "stat(%s) failed: %m", path); |
d4e9eb91 | 1505 | |
d7a0f1f4 FS |
1506 | if (!S_ISREG(stbuf.st_mode)) |
1507 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
1508 | "%s exists and is not a regular file.", | |
1509 | path); | |
d4e9eb91 | 1510 | |
5ec9d065 FB |
1511 | if (stbuf.st_size > 0) { |
1512 | if (ftruncate(fd, 0) < 0) { | |
1513 | r = erofs ? -EROFS : -errno; | |
1514 | return log_error_errno(r, "Failed to truncate file %s: %m", path); | |
1515 | } | |
1516 | } else | |
1517 | st = &stbuf; | |
d4e9eb91 | 1518 | |
5ec9d065 FB |
1519 | log_debug("\"%s\" has been created.", path); |
1520 | ||
1521 | if (i->argument) { | |
1522 | log_debug("Writing to \"%s\".", path); | |
1523 | ||
1524 | r = loop_write(fd, i->argument, strlen(i->argument), false); | |
1525 | if (r < 0) { | |
1526 | r = erofs ? -EROFS : r; | |
1527 | return log_error_errno(r, "Failed to write file %s: %m", path); | |
1528 | } | |
1529 | } | |
1530 | ||
9d874aec | 1531 | return fd_set_perms(i, fd, path, st); |
d4e9eb91 DR |
1532 | } |
1533 | ||
b1f7b17f | 1534 | static int copy_files(Item *i) { |
16ba55ad FB |
1535 | _cleanup_close_ int dfd = -1, fd = -1; |
1536 | char *bn; | |
b1f7b17f FB |
1537 | int r; |
1538 | ||
1539 | log_debug("Copying tree \"%s\" to \"%s\".", i->argument, i->path); | |
1540 | ||
16ba55ad | 1541 | bn = basename(i->path); |
b1f7b17f | 1542 | |
16ba55ad FB |
1543 | /* Validate the path and use the returned directory fd for copying the |
1544 | * target so we're sure that the path can't be changed behind our | |
1545 | * back. */ | |
1546 | dfd = path_open_parent_safe(i->path); | |
1547 | if (dfd < 0) | |
1548 | return dfd; | |
b1f7b17f | 1549 | |
16ba55ad FB |
1550 | r = copy_tree_at(AT_FDCWD, i->argument, |
1551 | dfd, bn, | |
1552 | i->uid_set ? i->uid : UID_INVALID, | |
1553 | i->gid_set ? i->gid : GID_INVALID, | |
652d9040 | 1554 | COPY_REFLINK | COPY_MERGE_EMPTY | COPY_MAC_CREATE | COPY_HARDLINKS); |
b1f7b17f FB |
1555 | if (r < 0) { |
1556 | struct stat a, b; | |
1557 | ||
16ba55ad FB |
1558 | /* If the target already exists on read-only filesystems, trying |
1559 | * to create the target will not fail with EEXIST but with | |
1560 | * EROFS. */ | |
1561 | if (r == -EROFS && faccessat(dfd, bn, F_OK, AT_SYMLINK_NOFOLLOW) == 0) | |
1562 | r = -EEXIST; | |
1563 | ||
b1f7b17f FB |
1564 | if (r != -EEXIST) |
1565 | return log_error_errno(r, "Failed to copy files to %s: %m", i->path); | |
1566 | ||
1567 | if (stat(i->argument, &a) < 0) | |
1568 | return log_error_errno(errno, "stat(%s) failed: %m", i->argument); | |
1569 | ||
16ba55ad | 1570 | if (fstatat(dfd, bn, &b, AT_SYMLINK_NOFOLLOW) < 0) |
b1f7b17f FB |
1571 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); |
1572 | ||
1573 | if ((a.st_mode ^ b.st_mode) & S_IFMT) { | |
1574 | log_debug("Can't copy to %s, file exists already and is of different type", i->path); | |
1575 | return 0; | |
1576 | } | |
1577 | } | |
1578 | ||
16ba55ad FB |
1579 | fd = openat(dfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1580 | if (fd < 0) | |
1581 | return log_error_errno(errno, "Failed to openat(%s): %m", i->path); | |
1582 | ||
9d874aec | 1583 | return fd_set_perms(i, fd, i->path, NULL); |
b1f7b17f FB |
1584 | } |
1585 | ||
074bd73f FB |
1586 | typedef enum { |
1587 | CREATION_NORMAL, | |
1588 | CREATION_EXISTING, | |
1589 | CREATION_FORCE, | |
1590 | _CREATION_MODE_MAX, | |
2d93c20e | 1591 | _CREATION_MODE_INVALID = -EINVAL, |
074bd73f FB |
1592 | } CreationMode; |
1593 | ||
b82f71c7 | 1594 | static const char *const creation_mode_verb_table[_CREATION_MODE_MAX] = { |
074bd73f FB |
1595 | [CREATION_NORMAL] = "Created", |
1596 | [CREATION_EXISTING] = "Found existing", | |
1597 | [CREATION_FORCE] = "Created replacement", | |
1598 | }; | |
1599 | ||
1600 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb, CreationMode); | |
1601 | ||
f17a8d61 | 1602 | static int create_directory_or_subvolume(const char *path, mode_t mode, bool subvol, CreationMode *creation) { |
4c39d899 | 1603 | _cleanup_close_ int pfd = -1; |
f17a8d61 | 1604 | CreationMode c; |
4c39d899 | 1605 | int r; |
4ad36844 | 1606 | |
4c39d899 | 1607 | assert(path); |
4ad36844 | 1608 | |
f17a8d61 FB |
1609 | if (!creation) |
1610 | creation = &c; | |
1611 | ||
4c39d899 FB |
1612 | pfd = path_open_parent_safe(path); |
1613 | if (pfd < 0) | |
1614 | return pfd; | |
4ad36844 | 1615 | |
4c39d899 | 1616 | if (subvol) { |
4ad36844 FB |
1617 | if (btrfs_is_subvol(empty_to_root(arg_root)) <= 0) |
1618 | ||
1619 | /* Don't create a subvolume unless the root directory is | |
1620 | * one, too. We do this under the assumption that if the | |
1621 | * root directory is just a plain directory (i.e. very | |
1622 | * light-weight), we shouldn't try to split it up into | |
1623 | * subvolumes (i.e. more heavy-weight). Thus, chroot() | |
1624 | * environments and suchlike will get a full brtfs | |
1625 | * subvolume set up below their tree only if they | |
1626 | * specifically set up a btrfs subvolume for the root | |
1627 | * dir too. */ | |
1628 | ||
4c39d899 | 1629 | subvol = false; |
4ad36844 | 1630 | else { |
4c39d899 FB |
1631 | RUN_WITH_UMASK((~mode) & 0777) |
1632 | r = btrfs_subvol_make_fd(pfd, basename(path)); | |
4ad36844 FB |
1633 | } |
1634 | } else | |
1635 | r = 0; | |
1636 | ||
4c39d899 | 1637 | if (!subvol || r == -ENOTTY) |
4ad36844 | 1638 | RUN_WITH_UMASK(0000) |
4c39d899 | 1639 | r = mkdirat_label(pfd, basename(path), mode); |
4ad36844 FB |
1640 | |
1641 | if (r < 0) { | |
1642 | int k; | |
1643 | ||
1644 | if (!IN_SET(r, -EEXIST, -EROFS)) | |
4c39d899 | 1645 | return log_error_errno(r, "Failed to create directory or subvolume \"%s\": %m", path); |
4ad36844 | 1646 | |
4c39d899 | 1647 | k = is_dir_fd(pfd); |
4ad36844 | 1648 | if (k == -ENOENT && r == -EROFS) |
4c39d899 | 1649 | return log_error_errno(r, "%s does not exist and cannot be created as the file system is read-only.", path); |
4ad36844 | 1650 | if (k < 0) |
4c39d899 | 1651 | return log_error_errno(k, "Failed to check if %s exists: %m", path); |
4ad36844 | 1652 | if (!k) { |
4c39d899 FB |
1653 | log_warning("\"%s\" already exists and is not a directory.", path); |
1654 | return -EEXIST; | |
4ad36844 FB |
1655 | } |
1656 | ||
f17a8d61 | 1657 | *creation = CREATION_EXISTING; |
4ad36844 | 1658 | } else |
f17a8d61 | 1659 | *creation = CREATION_NORMAL; |
4ad36844 | 1660 | |
f17a8d61 | 1661 | log_debug("%s directory \"%s\".", creation_mode_verb_to_string(*creation), path); |
4c39d899 FB |
1662 | |
1663 | r = openat(pfd, basename(path), O_NOCTTY|O_CLOEXEC|O_DIRECTORY); | |
1664 | if (r < 0) | |
09f12798 LP |
1665 | return log_error_errno(errno, "Failed to open directory '%s': %m", basename(path)); |
1666 | ||
4c39d899 FB |
1667 | return r; |
1668 | } | |
1669 | ||
1670 | static int create_directory(Item *i, const char *path) { | |
1671 | _cleanup_close_ int fd = -1; | |
1672 | ||
1673 | assert(i); | |
1674 | assert(IN_SET(i->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY)); | |
1675 | ||
f17a8d61 | 1676 | fd = create_directory_or_subvolume(path, i->mode, false, NULL); |
4c39d899 FB |
1677 | if (fd == -EEXIST) |
1678 | return 0; | |
1679 | if (fd < 0) | |
1680 | return fd; | |
1681 | ||
9d874aec | 1682 | return fd_set_perms(i, fd, path, NULL); |
4c39d899 FB |
1683 | } |
1684 | ||
1685 | static int create_subvolume(Item *i, const char *path) { | |
1686 | _cleanup_close_ int fd = -1; | |
f17a8d61 | 1687 | CreationMode creation; |
4c39d899 FB |
1688 | int r, q = 0; |
1689 | ||
1690 | assert(i); | |
1691 | assert(IN_SET(i->type, CREATE_SUBVOLUME, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)); | |
1692 | ||
f17a8d61 | 1693 | fd = create_directory_or_subvolume(path, i->mode, true, &creation); |
4c39d899 FB |
1694 | if (fd == -EEXIST) |
1695 | return 0; | |
1696 | if (fd < 0) | |
1697 | return fd; | |
4ad36844 | 1698 | |
f17a8d61 FB |
1699 | if (creation == CREATION_NORMAL && |
1700 | IN_SET(i->type, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)) { | |
4c39d899 | 1701 | r = btrfs_subvol_auto_qgroup_fd(fd, 0, i->type == CREATE_SUBVOLUME_NEW_QUOTA); |
4ad36844 FB |
1702 | if (r == -ENOTTY) |
1703 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (unsupported fs or dir not a subvolume): %m", i->path); | |
1704 | else if (r == -EROFS) | |
1705 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (fs is read-only).", i->path); | |
4b019d2f | 1706 | else if (r == -ENOTCONN) |
4ad36844 FB |
1707 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (quota support is disabled).", i->path); |
1708 | else if (r < 0) | |
1709 | q = log_error_errno(r, "Failed to adjust quota for subvolume \"%s\": %m", i->path); | |
1710 | else if (r > 0) | |
1711 | log_debug("Adjusted quota for subvolume \"%s\".", i->path); | |
1712 | else if (r == 0) | |
1713 | log_debug("Quota for subvolume \"%s\" already in place, no change made.", i->path); | |
1714 | } | |
1715 | ||
9d874aec LP |
1716 | r = fd_set_perms(i, fd, path, NULL); |
1717 | if (q < 0) /* prefer the quota change error from above */ | |
4ad36844 FB |
1718 | return q; |
1719 | ||
1720 | return r; | |
1721 | } | |
1722 | ||
54946021 FB |
1723 | static int empty_directory(Item *i, const char *path) { |
1724 | int r; | |
1725 | ||
1726 | assert(i); | |
1727 | assert(i->type == EMPTY_DIRECTORY); | |
1728 | ||
1729 | r = is_dir(path, false); | |
1730 | if (r == -ENOENT) { | |
1731 | /* Option "e" operates only on existing objects. Do not | |
1732 | * print errors about non-existent files or directories */ | |
1733 | log_debug("Skipping missing directory: %s", path); | |
1734 | return 0; | |
1735 | } | |
1736 | if (r < 0) | |
1737 | return log_error_errno(r, "is_dir() failed on path %s: %m", path); | |
baaa35ad ZJS |
1738 | if (r == 0) |
1739 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
1740 | "'%s' already exists and is not a directory.", | |
1741 | path); | |
54946021 FB |
1742 | |
1743 | return path_set_perms(i, path); | |
1744 | } | |
1745 | ||
074bd73f | 1746 | static int create_device(Item *i, mode_t file_type) { |
c7700a77 | 1747 | _cleanup_close_ int dfd = -1, fd = -1; |
074bd73f | 1748 | CreationMode creation; |
c7700a77 | 1749 | char *bn; |
074bd73f FB |
1750 | int r; |
1751 | ||
1752 | assert(i); | |
1753 | assert(IN_SET(file_type, S_IFBLK, S_IFCHR)); | |
1754 | ||
c7700a77 FB |
1755 | bn = basename(i->path); |
1756 | ||
1757 | /* Validate the path and use the returned directory fd for copying the | |
1758 | * target so we're sure that the path can't be changed behind our | |
1759 | * back. */ | |
1760 | dfd = path_open_parent_safe(i->path); | |
1761 | if (dfd < 0) | |
1762 | return dfd; | |
1763 | ||
074bd73f FB |
1764 | RUN_WITH_UMASK(0000) { |
1765 | mac_selinux_create_file_prepare(i->path, file_type); | |
c7700a77 | 1766 | r = mknodat(dfd, bn, i->mode | file_type, i->major_minor); |
074bd73f FB |
1767 | mac_selinux_create_file_clear(); |
1768 | } | |
1769 | ||
1770 | if (r < 0) { | |
c7700a77 FB |
1771 | struct stat st; |
1772 | ||
074bd73f FB |
1773 | if (errno == EPERM) { |
1774 | log_debug("We lack permissions, possibly because of cgroup configuration; " | |
1775 | "skipping creation of device node %s.", i->path); | |
1776 | return 0; | |
1777 | } | |
1778 | ||
1779 | if (errno != EEXIST) | |
1780 | return log_error_errno(errno, "Failed to create device node %s: %m", i->path); | |
1781 | ||
c7700a77 | 1782 | if (fstatat(dfd, bn, &st, 0) < 0) |
074bd73f FB |
1783 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); |
1784 | ||
1785 | if ((st.st_mode & S_IFMT) != file_type) { | |
1786 | ||
c55ac248 | 1787 | if (i->append_or_force) { |
074bd73f FB |
1788 | |
1789 | RUN_WITH_UMASK(0000) { | |
1790 | mac_selinux_create_file_prepare(i->path, file_type); | |
c7700a77 | 1791 | /* FIXME: need to introduce mknodat_atomic() */ |
074bd73f FB |
1792 | r = mknod_atomic(i->path, i->mode | file_type, i->major_minor); |
1793 | mac_selinux_create_file_clear(); | |
1794 | } | |
1795 | ||
1796 | if (r < 0) | |
1797 | return log_error_errno(r, "Failed to create device node \"%s\": %m", i->path); | |
1798 | creation = CREATION_FORCE; | |
1799 | } else { | |
1800 | log_debug("%s is not a device node.", i->path); | |
1801 | return 0; | |
1802 | } | |
1803 | } else | |
1804 | creation = CREATION_EXISTING; | |
1805 | } else | |
1806 | creation = CREATION_NORMAL; | |
1807 | ||
1808 | log_debug("%s %s device node \"%s\" %u:%u.", | |
1809 | creation_mode_verb_to_string(creation), | |
1810 | i->type == CREATE_BLOCK_DEVICE ? "block" : "char", | |
1811 | i->path, major(i->mode), minor(i->mode)); | |
1812 | ||
c7700a77 FB |
1813 | fd = openat(dfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1814 | if (fd < 0) | |
1815 | return log_error_errno(errno, "Failed to openat(%s): %m", i->path); | |
1816 | ||
9d874aec | 1817 | return fd_set_perms(i, fd, i->path, NULL); |
074bd73f FB |
1818 | } |
1819 | ||
a2fc2f8d | 1820 | static int create_fifo(Item *i, const char *path) { |
7ea5a87f | 1821 | _cleanup_close_ int pfd = -1, fd = -1; |
a2fc2f8d FB |
1822 | CreationMode creation; |
1823 | struct stat st; | |
7ea5a87f | 1824 | char *bn; |
a2fc2f8d FB |
1825 | int r; |
1826 | ||
7ea5a87f FB |
1827 | pfd = path_open_parent_safe(path); |
1828 | if (pfd < 0) | |
1829 | return pfd; | |
1830 | ||
1831 | bn = basename(path); | |
1832 | ||
a2fc2f8d FB |
1833 | RUN_WITH_UMASK(0000) { |
1834 | mac_selinux_create_file_prepare(path, S_IFIFO); | |
7ea5a87f | 1835 | r = mkfifoat(pfd, bn, i->mode); |
a2fc2f8d FB |
1836 | mac_selinux_create_file_clear(); |
1837 | } | |
1838 | ||
1839 | if (r < 0) { | |
1840 | if (errno != EEXIST) | |
1841 | return log_error_errno(errno, "Failed to create fifo %s: %m", path); | |
1842 | ||
7ea5a87f | 1843 | if (fstatat(pfd, bn, &st, AT_SYMLINK_NOFOLLOW) < 0) |
a2fc2f8d FB |
1844 | return log_error_errno(errno, "stat(%s) failed: %m", path); |
1845 | ||
1846 | if (!S_ISFIFO(st.st_mode)) { | |
1847 | ||
c55ac248 | 1848 | if (i->append_or_force) { |
a2fc2f8d FB |
1849 | RUN_WITH_UMASK(0000) { |
1850 | mac_selinux_create_file_prepare(path, S_IFIFO); | |
7ea5a87f | 1851 | r = mkfifoat_atomic(pfd, bn, i->mode); |
a2fc2f8d FB |
1852 | mac_selinux_create_file_clear(); |
1853 | } | |
1854 | ||
1855 | if (r < 0) | |
1856 | return log_error_errno(r, "Failed to create fifo %s: %m", path); | |
1857 | creation = CREATION_FORCE; | |
1858 | } else { | |
1859 | log_warning("\"%s\" already exists and is not a fifo.", path); | |
1860 | return 0; | |
1861 | } | |
1862 | } else | |
1863 | creation = CREATION_EXISTING; | |
1864 | } else | |
1865 | creation = CREATION_NORMAL; | |
7ea5a87f | 1866 | |
a2fc2f8d FB |
1867 | log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation), path); |
1868 | ||
7ea5a87f FB |
1869 | fd = openat(pfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1870 | if (fd < 0) | |
a5df05ff | 1871 | return log_error_errno(errno, "Failed to openat(%s): %m", path); |
7ea5a87f | 1872 | |
9d874aec | 1873 | return fd_set_perms(i, fd, i->path, NULL); |
a2fc2f8d FB |
1874 | } |
1875 | ||
9d874aec LP |
1876 | typedef int (*action_t)(Item *i, const char *path); |
1877 | typedef int (*fdaction_t)(Item *i, int fd, const char *path, const struct stat *st); | |
081043cf | 1878 | |
9d874aec | 1879 | static int item_do(Item *i, int fd, const char *path, fdaction_t action) { |
14f3480a | 1880 | struct stat st; |
936f6bdb | 1881 | int r = 0, q; |
e73a03e0 LP |
1882 | |
1883 | assert(i); | |
4dc7bfdf | 1884 | assert(path); |
936f6bdb | 1885 | assert(fd >= 0); |
14f3480a FB |
1886 | |
1887 | if (fstat(fd, &st) < 0) { | |
09f12798 | 1888 | r = log_error_errno(errno, "fstat() on file failed: %m"); |
14f3480a FB |
1889 | goto finish; |
1890 | } | |
a8d88783 MS |
1891 | |
1892 | /* This returns the first error we run into, but nevertheless | |
1893 | * tries to go on */ | |
9d874aec | 1894 | r = action(i, fd, path, &st); |
a8d88783 | 1895 | |
14f3480a | 1896 | if (S_ISDIR(st.st_mode)) { |
22dd8d35 | 1897 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
936f6bdb FB |
1898 | _cleanup_closedir_ DIR *d = NULL; |
1899 | struct dirent *de; | |
a8d88783 | 1900 | |
936f6bdb FB |
1901 | /* The passed 'fd' was opened with O_PATH. We need to convert |
1902 | * it into a 'regular' fd before reading the directory content. */ | |
1903 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); | |
a8d88783 | 1904 | |
936f6bdb FB |
1905 | d = opendir(procfs_path); |
1906 | if (!d) { | |
09f12798 LP |
1907 | log_error_errno(errno, "Failed to opendir() '%s': %m", procfs_path); |
1908 | if (r == 0) | |
1909 | r = -errno; | |
936f6bdb FB |
1910 | goto finish; |
1911 | } | |
a8d88783 | 1912 | |
936f6bdb | 1913 | FOREACH_DIRENT_ALL(de, d, q = -errno; goto finish) { |
936f6bdb | 1914 | int de_fd; |
a8d88783 | 1915 | |
936f6bdb FB |
1916 | if (dot_or_dot_dot(de->d_name)) |
1917 | continue; | |
1918 | ||
1919 | de_fd = openat(fd, de->d_name, O_NOFOLLOW|O_CLOEXEC|O_PATH); | |
9d874aec LP |
1920 | if (de_fd < 0) |
1921 | q = log_error_errno(errno, "Failed to open() file '%s': %m", de->d_name); | |
4dc7bfdf FB |
1922 | else { |
1923 | _cleanup_free_ char *de_path = NULL; | |
1924 | ||
62a85ee0 | 1925 | de_path = path_join(path, de->d_name); |
4dc7bfdf FB |
1926 | if (!de_path) |
1927 | q = log_oom(); | |
1928 | else | |
1929 | /* Pass ownership of dirent fd over */ | |
1930 | q = item_do(i, de_fd, de_path, action); | |
1931 | } | |
a8d88783 | 1932 | |
e73a03e0 LP |
1933 | if (q < 0 && r == 0) |
1934 | r = q; | |
a8d88783 | 1935 | } |
a8d88783 | 1936 | } |
936f6bdb FB |
1937 | finish: |
1938 | safe_close(fd); | |
e73a03e0 | 1939 | return r; |
a8d88783 MS |
1940 | } |
1941 | ||
936f6bdb | 1942 | static int glob_item(Item *i, action_t action) { |
df99a9ef | 1943 | _cleanup_globfree_ glob_t g = { |
ebf31a1f | 1944 | .gl_opendir = (void *(*)(const char *)) opendir_nomod, |
df99a9ef | 1945 | }; |
e73a03e0 | 1946 | int r = 0, k; |
99e68c0b MS |
1947 | char **fn; |
1948 | ||
84e72b5e ZJS |
1949 | k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g); |
1950 | if (k < 0 && k != -ENOENT) | |
1951 | return log_error_errno(k, "glob(%s) failed: %m", i->path); | |
99e68c0b | 1952 | |
c84a9488 ZJS |
1953 | STRV_FOREACH(fn, g.gl_pathv) { |
1954 | k = action(i, *fn); | |
e73a03e0 | 1955 | if (k < 0 && r == 0) |
99e68c0b | 1956 | r = k; |
936f6bdb FB |
1957 | } |
1958 | ||
1959 | return r; | |
1960 | } | |
081043cf | 1961 | |
936f6bdb FB |
1962 | static int glob_item_recursively(Item *i, fdaction_t action) { |
1963 | _cleanup_globfree_ glob_t g = { | |
1964 | .gl_opendir = (void *(*)(const char *)) opendir_nomod, | |
1965 | }; | |
1966 | int r = 0, k; | |
1967 | char **fn; | |
1968 | ||
1969 | k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g); | |
1970 | if (k < 0 && k != -ENOENT) | |
1971 | return log_error_errno(k, "glob(%s) failed: %m", i->path); | |
1972 | ||
1973 | STRV_FOREACH(fn, g.gl_pathv) { | |
1974 | _cleanup_close_ int fd = -1; | |
936f6bdb FB |
1975 | |
1976 | /* Make sure we won't trigger/follow file object (such as | |
1977 | * device nodes, automounts, ...) pointed out by 'fn' with | |
1978 | * O_PATH. Note, when O_PATH is used, flags other than | |
1979 | * O_CLOEXEC, O_DIRECTORY, and O_NOFOLLOW are ignored. */ | |
1980 | ||
1981 | fd = open(*fn, O_CLOEXEC|O_NOFOLLOW|O_PATH); | |
1982 | if (fd < 0) { | |
09f12798 LP |
1983 | log_error_errno(errno, "Opening '%s' failed: %m", *fn); |
1984 | if (r == 0) | |
1985 | r = -errno; | |
936f6bdb FB |
1986 | continue; |
1987 | } | |
1988 | ||
9d874aec | 1989 | k = item_do(i, fd, *fn, action); |
936f6bdb FB |
1990 | if (k < 0 && r == 0) |
1991 | r = k; | |
1992 | ||
1993 | /* we passed fd ownership to the previous call */ | |
1994 | fd = -1; | |
c84a9488 | 1995 | } |
99e68c0b | 1996 | |
99e68c0b MS |
1997 | return r; |
1998 | } | |
1999 | ||
3b63d2d3 | 2000 | static int create_item(Item *i) { |
294929f8 | 2001 | CreationMode creation; |
a2fc2f8d | 2002 | int r = 0; |
5008d581 | 2003 | |
3b63d2d3 | 2004 | assert(i); |
5008d581 | 2005 | |
582deb84 ZJS |
2006 | log_debug("Running create action for entry %c %s", (char) i->type, i->path); |
2007 | ||
3b63d2d3 LP |
2008 | switch (i->type) { |
2009 | ||
2010 | case IGNORE_PATH: | |
78a92a5a | 2011 | case IGNORE_DIRECTORY_PATH: |
3b63d2d3 LP |
2012 | case REMOVE_PATH: |
2013 | case RECURSIVE_REMOVE_PATH: | |
2014 | return 0; | |
5008d581 | 2015 | |
eccebf4b | 2016 | case TRUNCATE_FILE: |
3b63d2d3 | 2017 | case CREATE_FILE: |
7fa10748 LP |
2018 | RUN_WITH_UMASK(0000) |
2019 | (void) mkdir_parents_label(i->path, 0755); | |
2020 | ||
eccebf4b ZS |
2021 | if ((i->type == CREATE_FILE && i->append_or_force) || i->type == TRUNCATE_FILE) |
2022 | r = truncate_file(i, i->path); | |
2023 | else | |
2024 | r = create_file(i, i->path); | |
5ec9d065 | 2025 | |
5ec9d065 FB |
2026 | if (r < 0) |
2027 | return r; | |
2028 | break; | |
2029 | ||
7b887f22 | 2030 | case COPY_FILES: |
7fa10748 LP |
2031 | RUN_WITH_UMASK(0000) |
2032 | (void) mkdir_parents_label(i->path, 0755); | |
2033 | ||
b1f7b17f | 2034 | r = copy_files(i); |
849958d1 LP |
2035 | if (r < 0) |
2036 | return r; | |
849958d1 LP |
2037 | break; |
2038 | ||
d4e9eb91 | 2039 | case WRITE_FILE: |
936f6bdb | 2040 | r = glob_item(i, write_one_file); |
f05bc3f7 MS |
2041 | if (r < 0) |
2042 | return r; | |
5008d581 | 2043 | |
3b63d2d3 LP |
2044 | break; |
2045 | ||
3b63d2d3 | 2046 | case CREATE_DIRECTORY: |
d7b8eec7 | 2047 | case TRUNCATE_DIRECTORY: |
4c39d899 FB |
2048 | RUN_WITH_UMASK(0000) |
2049 | (void) mkdir_parents_label(i->path, 0755); | |
2050 | ||
2051 | r = create_directory(i, i->path); | |
2052 | if (r < 0) | |
2053 | return r; | |
2054 | break; | |
2055 | ||
d7b8eec7 | 2056 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
2057 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
2058 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
d7b8eec7 | 2059 | RUN_WITH_UMASK(0000) |
7fa10748 | 2060 | (void) mkdir_parents_label(i->path, 0755); |
d7b8eec7 | 2061 | |
4c39d899 | 2062 | r = create_subvolume(i, i->path); |
4ad36844 FB |
2063 | if (r < 0) |
2064 | return r; | |
2065 | break; | |
5fb13eb5 | 2066 | |
df8dee85 | 2067 | case EMPTY_DIRECTORY: |
54946021 | 2068 | r = glob_item(i, empty_directory); |
f05bc3f7 MS |
2069 | if (r < 0) |
2070 | return r; | |
3b63d2d3 | 2071 | break; |
ee17ee7c LP |
2072 | |
2073 | case CREATE_FIFO: | |
a2fc2f8d | 2074 | RUN_WITH_UMASK(0000) |
7fa10748 LP |
2075 | (void) mkdir_parents_label(i->path, 0755); |
2076 | ||
a2fc2f8d | 2077 | r = create_fifo(i, i->path); |
f05bc3f7 MS |
2078 | if (r < 0) |
2079 | return r; | |
ee17ee7c | 2080 | break; |
a8d88783 | 2081 | |
5c5ccf12 | 2082 | case CREATE_SYMLINK: { |
7fa10748 LP |
2083 | RUN_WITH_UMASK(0000) |
2084 | (void) mkdir_parents_label(i->path, 0755); | |
2085 | ||
ecabcf8b | 2086 | mac_selinux_create_file_prepare(i->path, S_IFLNK); |
4cef1923 | 2087 | r = symlink(i->argument, i->path); |
ecabcf8b | 2088 | mac_selinux_create_file_clear(); |
e9a5ef7c | 2089 | |
468d726b | 2090 | if (r < 0) { |
2e78fa79 | 2091 | _cleanup_free_ char *x = NULL; |
468d726b | 2092 | |
4a62c710 | 2093 | if (errno != EEXIST) |
4cef1923 | 2094 | return log_error_errno(errno, "symlink(%s, %s) failed: %m", i->argument, i->path); |
2e78fa79 LP |
2095 | |
2096 | r = readlink_malloc(i->path, &x); | |
4cef1923 | 2097 | if (r < 0 || !streq(i->argument, x)) { |
2e78fa79 | 2098 | |
c55ac248 | 2099 | if (i->append_or_force) { |
ecabcf8b | 2100 | mac_selinux_create_file_prepare(i->path, S_IFLNK); |
4cef1923 | 2101 | r = symlink_atomic(i->argument, i->path); |
ecabcf8b | 2102 | mac_selinux_create_file_clear(); |
2e78fa79 | 2103 | |
2ef5de1b | 2104 | if (IN_SET(r, -EISDIR, -EEXIST, -ENOTEMPTY)) { |
b3f5897f WD |
2105 | r = rm_rf(i->path, REMOVE_ROOT|REMOVE_PHYSICAL); |
2106 | if (r < 0) | |
2107 | return log_error_errno(r, "rm -fr %s failed: %m", i->path); | |
2108 | ||
2109 | mac_selinux_create_file_prepare(i->path, S_IFLNK); | |
4cef1923 | 2110 | r = symlink(i->argument, i->path) < 0 ? -errno : 0; |
b3f5897f WD |
2111 | mac_selinux_create_file_clear(); |
2112 | } | |
f647962d | 2113 | if (r < 0) |
4cef1923 | 2114 | return log_error_errno(r, "symlink(%s, %s) failed: %m", i->argument, i->path); |
a542c4dc | 2115 | |
294929f8 | 2116 | creation = CREATION_FORCE; |
1554afae | 2117 | } else { |
582deb84 | 2118 | log_debug("\"%s\" is not a symlink or does not point to the correct path.", i->path); |
1554afae LP |
2119 | return 0; |
2120 | } | |
294929f8 ZJS |
2121 | } else |
2122 | creation = CREATION_EXISTING; | |
2123 | } else | |
a542c4dc | 2124 | |
294929f8 | 2125 | creation = CREATION_NORMAL; |
7a7d5db7 | 2126 | log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation), i->path); |
468d726b | 2127 | break; |
5c5ccf12 | 2128 | } |
468d726b LP |
2129 | |
2130 | case CREATE_BLOCK_DEVICE: | |
074bd73f | 2131 | case CREATE_CHAR_DEVICE: |
cb7ed9df | 2132 | if (have_effective_cap(CAP_MKNOD) == 0) { |
713998cf LP |
2133 | /* In a container we lack CAP_MKNOD. We shouldn't attempt to create the device node in that |
2134 | * case to avoid noise, and we don't support virtualized devices in containers anyway. */ | |
cb7ed9df LP |
2135 | |
2136 | log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path); | |
2137 | return 0; | |
2138 | } | |
2139 | ||
7fa10748 LP |
2140 | RUN_WITH_UMASK(0000) |
2141 | (void) mkdir_parents_label(i->path, 0755); | |
2142 | ||
074bd73f | 2143 | r = create_device(i, i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR); |
468d726b LP |
2144 | if (r < 0) |
2145 | return r; | |
2146 | ||
2147 | break; | |
468d726b | 2148 | |
e73a03e0 | 2149 | case ADJUST_MODE: |
777b87e7 | 2150 | case RELABEL_PATH: |
936f6bdb | 2151 | r = glob_item(i, path_set_perms); |
777b87e7 | 2152 | if (r < 0) |
96ca8194 | 2153 | return r; |
777b87e7 MS |
2154 | break; |
2155 | ||
a8d88783 | 2156 | case RECURSIVE_RELABEL_PATH: |
936f6bdb | 2157 | r = glob_item_recursively(i, fd_set_perms); |
a8d88783 MS |
2158 | if (r < 0) |
2159 | return r; | |
ebf4e801 | 2160 | break; |
e73a03e0 | 2161 | |
ebf4e801 | 2162 | case SET_XATTR: |
936f6bdb | 2163 | r = glob_item(i, path_set_xattrs); |
b705ab6a ZJS |
2164 | if (r < 0) |
2165 | return r; | |
2166 | break; | |
2167 | ||
2168 | case RECURSIVE_SET_XATTR: | |
936f6bdb | 2169 | r = glob_item_recursively(i, fd_set_xattrs); |
ebf4e801 MW |
2170 | if (r < 0) |
2171 | return r; | |
e73a03e0 | 2172 | break; |
f8eeeaf9 ZJS |
2173 | |
2174 | case SET_ACL: | |
936f6bdb | 2175 | r = glob_item(i, path_set_acls); |
f8eeeaf9 ZJS |
2176 | if (r < 0) |
2177 | return r; | |
b705ab6a ZJS |
2178 | break; |
2179 | ||
2180 | case RECURSIVE_SET_ACL: | |
936f6bdb | 2181 | r = glob_item_recursively(i, fd_set_acls); |
b705ab6a ZJS |
2182 | if (r < 0) |
2183 | return r; | |
2184 | break; | |
22c3a6ca | 2185 | |
88ec4dfa | 2186 | case SET_ATTRIBUTE: |
936f6bdb | 2187 | r = glob_item(i, path_set_attribute); |
22c3a6ca GB |
2188 | if (r < 0) |
2189 | return r; | |
2190 | break; | |
2191 | ||
88ec4dfa | 2192 | case RECURSIVE_SET_ATTRIBUTE: |
936f6bdb | 2193 | r = glob_item_recursively(i, fd_set_attribute); |
22c3a6ca GB |
2194 | if (r < 0) |
2195 | return r; | |
2196 | break; | |
3b63d2d3 LP |
2197 | } |
2198 | ||
f05bc3f7 | 2199 | return 0; |
3b63d2d3 LP |
2200 | } |
2201 | ||
a0896123 | 2202 | static int remove_item_instance(Item *i, const char *instance) { |
3b63d2d3 LP |
2203 | int r; |
2204 | ||
2205 | assert(i); | |
2206 | ||
2207 | switch (i->type) { | |
2208 | ||
3b63d2d3 | 2209 | case REMOVE_PATH: |
4a62c710 | 2210 | if (remove(instance) < 0 && errno != ENOENT) |
3f93da98 | 2211 | return log_error_errno(errno, "rm(%s): %m", instance); |
3b63d2d3 LP |
2212 | |
2213 | break; | |
2214 | ||
3b63d2d3 | 2215 | case RECURSIVE_REMOVE_PATH: |
2c575977 | 2216 | /* FIXME: we probably should use dir_cleanup() here instead of rm_rf() so that 'x' is honoured. */ |
582deb84 | 2217 | log_debug("rm -rf \"%s\"", instance); |
2c575977 | 2218 | r = rm_rf(instance, REMOVE_ROOT|REMOVE_SUBVOLUME|REMOVE_PHYSICAL); |
f647962d MS |
2219 | if (r < 0 && r != -ENOENT) |
2220 | return log_error_errno(r, "rm_rf(%s): %m", instance); | |
3b63d2d3 LP |
2221 | |
2222 | break; | |
7fcb4b9b ZJS |
2223 | |
2224 | default: | |
2225 | assert_not_reached("wut?"); | |
3b63d2d3 LP |
2226 | } |
2227 | ||
2228 | return 0; | |
2229 | } | |
2230 | ||
a0896123 | 2231 | static int remove_item(Item *i) { |
2c575977 LP |
2232 | int r; |
2233 | ||
b8bb3e8f LP |
2234 | assert(i); |
2235 | ||
582deb84 ZJS |
2236 | log_debug("Running remove action for entry %c %s", (char) i->type, i->path); |
2237 | ||
b8bb3e8f LP |
2238 | switch (i->type) { |
2239 | ||
b8bb3e8f | 2240 | case TRUNCATE_DIRECTORY: |
2c575977 LP |
2241 | /* FIXME: we probably should use dir_cleanup() here instead of rm_rf() so that 'x' is honoured. */ |
2242 | log_debug("rm -rf \"%s\"", i->path); | |
2243 | r = rm_rf(i->path, REMOVE_PHYSICAL); | |
2244 | if (r < 0 && r != -ENOENT) | |
2245 | return log_error_errno(r, "rm_rf(%s): %m", i->path); | |
2246 | ||
2247 | return 0; | |
2248 | ||
2249 | case REMOVE_PATH: | |
99e68c0b | 2250 | case RECURSIVE_REMOVE_PATH: |
936f6bdb | 2251 | return glob_item(i, remove_item_instance); |
b8bb3e8f | 2252 | |
df8dee85 ZJS |
2253 | default: |
2254 | return 0; | |
2255 | } | |
b8bb3e8f LP |
2256 | } |
2257 | ||
78a92a5a | 2258 | static int clean_item_instance(Item *i, const char* instance) { |
ddb439b8 | 2259 | char timestamp[FORMAT_TIMESTAMP_MAX]; |
7fd1b19b | 2260 | _cleanup_closedir_ DIR *d = NULL; |
7cd296c2 | 2261 | STRUCT_STATX_DEFINE(sx); |
ca194a2a | 2262 | int mountpoint, r; |
78a92a5a | 2263 | usec_t cutoff, n; |
ddb439b8 | 2264 | |
78a92a5a MS |
2265 | assert(i); |
2266 | ||
2267 | if (!i->age_set) | |
2268 | return 0; | |
2269 | ||
2270 | n = now(CLOCK_REALTIME); | |
2271 | if (n < i->age) | |
2272 | return 0; | |
2273 | ||
2274 | cutoff = n - i->age; | |
2275 | ||
df99a9ef | 2276 | d = opendir_nomod(instance); |
78a92a5a | 2277 | if (!d) { |
d710aaf7 | 2278 | if (IN_SET(errno, ENOENT, ENOTDIR)) { |
582deb84 | 2279 | log_debug_errno(errno, "Directory \"%s\": %m", instance); |
78a92a5a | 2280 | return 0; |
582deb84 | 2281 | } |
78a92a5a | 2282 | |
d710aaf7 | 2283 | return log_error_errno(errno, "Failed to open directory %s: %m", instance); |
78a92a5a MS |
2284 | } |
2285 | ||
ca194a2a LP |
2286 | r = statx_fallback(dirfd(d), "", AT_EMPTY_PATH, STATX_MODE|STATX_INO|STATX_ATIME|STATX_MTIME, &sx); |
2287 | if (r < 0) | |
2288 | return log_error_errno(r, "statx(%s) failed: %m", instance); | |
ddb439b8 | 2289 | |
ca194a2a LP |
2290 | if (FLAGS_SET(sx.stx_attributes_mask, STATX_ATTR_MOUNT_ROOT)) |
2291 | mountpoint = FLAGS_SET(sx.stx_attributes, STATX_ATTR_MOUNT_ROOT); | |
2292 | else { | |
ddb439b8 | 2293 | struct stat ps; |
78a92a5a | 2294 | |
ddb439b8 LP |
2295 | if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) |
2296 | return log_error_errno(errno, "stat(%s/..) failed: %m", i->path); | |
78a92a5a | 2297 | |
ddb439b8 | 2298 | mountpoint = |
ca194a2a LP |
2299 | sx.stx_dev_major != major(ps.st_dev) || |
2300 | sx.stx_dev_minor != minor(ps.st_dev) || | |
2301 | sx.stx_ino != ps.st_ino; | |
ddb439b8 | 2302 | } |
78a92a5a | 2303 | |
582deb84 ZJS |
2304 | log_debug("Cleanup threshold for %s \"%s\" is %s", |
2305 | mountpoint ? "mount point" : "directory", | |
2306 | instance, | |
7b3eb5c9 | 2307 | format_timestamp_style(timestamp, sizeof(timestamp), cutoff, TIMESTAMP_US)); |
582deb84 | 2308 | |
ddb439b8 | 2309 | return dir_cleanup(i, instance, d, |
ca194a2a LP |
2310 | load_statx_timestamp_nsec(&sx.stx_atime), |
2311 | load_statx_timestamp_nsec(&sx.stx_mtime), | |
2312 | cutoff * NSEC_PER_USEC, | |
2313 | sx.stx_dev_major, sx.stx_dev_minor, mountpoint, | |
582deb84 | 2314 | MAX_DEPTH, i->keep_first_level); |
78a92a5a MS |
2315 | } |
2316 | ||
2317 | static int clean_item(Item *i) { | |
78a92a5a MS |
2318 | assert(i); |
2319 | ||
582deb84 ZJS |
2320 | log_debug("Running clean action for entry %c %s", (char) i->type, i->path); |
2321 | ||
78a92a5a MS |
2322 | switch (i->type) { |
2323 | case CREATE_DIRECTORY: | |
d7b8eec7 | 2324 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
2325 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
2326 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
78a92a5a MS |
2327 | case TRUNCATE_DIRECTORY: |
2328 | case IGNORE_PATH: | |
849958d1 | 2329 | case COPY_FILES: |
78a92a5a | 2330 | clean_item_instance(i, i->path); |
df8dee85 | 2331 | return 0; |
65241c14 | 2332 | case EMPTY_DIRECTORY: |
78a92a5a | 2333 | case IGNORE_DIRECTORY_PATH: |
936f6bdb | 2334 | return glob_item(i, clean_item_instance); |
78a92a5a | 2335 | default: |
df8dee85 | 2336 | return 0; |
78a92a5a | 2337 | } |
78a92a5a MS |
2338 | } |
2339 | ||
599ebe29 | 2340 | static int process_item(Item *i, OperationMask operation) { |
811a1587 LP |
2341 | OperationMask todo; |
2342 | int r, q, p; | |
3b63d2d3 LP |
2343 | |
2344 | assert(i); | |
2345 | ||
811a1587 LP |
2346 | todo = operation & ~i->done; |
2347 | if (todo == 0) /* Everything already done? */ | |
1910cd0e LP |
2348 | return 0; |
2349 | ||
811a1587 | 2350 | i->done |= operation; |
1910cd0e | 2351 | |
a5648b80 | 2352 | r = chase_symlinks(i->path, arg_root, CHASE_NO_AUTOFS|CHASE_WARN, NULL, NULL); |
21af3386 | 2353 | if (r == -EREMOTE) { |
145b8d0f | 2354 | log_notice_errno(r, "Skipping %s", i->path); |
811a1587 | 2355 | return 0; |
145b8d0f FB |
2356 | } |
2357 | if (r < 0) | |
48d96904 | 2358 | log_debug_errno(r, "Failed to determine whether '%s' is below autofs, ignoring: %m", i->path); |
655f2da0 | 2359 | |
599ebe29 | 2360 | r = FLAGS_SET(operation, OPERATION_CREATE) ? create_item(i) : 0; |
6d7b5433 WD |
2361 | /* Failure can only be tolerated for create */ |
2362 | if (i->allow_failure) | |
2363 | r = 0; | |
3b63d2d3 | 2364 | |
599ebe29 LP |
2365 | q = FLAGS_SET(operation, OPERATION_REMOVE) ? remove_item(i) : 0; |
2366 | p = FLAGS_SET(operation, OPERATION_CLEAN) ? clean_item(i) : 0; | |
1a967b6b | 2367 | |
811a1587 | 2368 | return r < 0 ? r : |
1db50423 ZJS |
2369 | q < 0 ? q : |
2370 | p; | |
3b63d2d3 LP |
2371 | } |
2372 | ||
599ebe29 | 2373 | static int process_item_array(ItemArray *array, OperationMask operation) { |
96d10d78 LP |
2374 | int r = 0; |
2375 | size_t n; | |
753615e8 | 2376 | |
3f93da98 ZJS |
2377 | assert(array); |
2378 | ||
811a1587 LP |
2379 | /* Create any parent first. */ |
2380 | if (FLAGS_SET(operation, OPERATION_CREATE) && array->parent) | |
2381 | r = process_item_array(array->parent, operation & OPERATION_CREATE); | |
2382 | ||
2383 | /* Clean up all children first */ | |
2384 | if ((operation & (OPERATION_REMOVE|OPERATION_CLEAN)) && !set_isempty(array->children)) { | |
811a1587 LP |
2385 | ItemArray *c; |
2386 | ||
90e74a66 | 2387 | SET_FOREACH(c, array->children) { |
811a1587 LP |
2388 | int k; |
2389 | ||
2390 | k = process_item_array(c, operation & (OPERATION_REMOVE|OPERATION_CLEAN)); | |
2391 | if (k < 0 && r == 0) | |
2392 | r = k; | |
2393 | } | |
2394 | } | |
2395 | ||
96d10d78 LP |
2396 | for (n = 0; n < array->n_items; n++) { |
2397 | int k; | |
2398 | ||
599ebe29 | 2399 | k = process_item(array->items + n, operation); |
3f93da98 ZJS |
2400 | if (k < 0 && r == 0) |
2401 | r = k; | |
2402 | } | |
2403 | ||
2404 | return r; | |
2405 | } | |
3b63d2d3 | 2406 | |
3f93da98 ZJS |
2407 | static void item_free_contents(Item *i) { |
2408 | assert(i); | |
3b63d2d3 | 2409 | free(i->path); |
468d726b | 2410 | free(i->argument); |
ebf4e801 | 2411 | strv_free(i->xattrs); |
f8eeeaf9 | 2412 | |
349cc4a5 | 2413 | #if HAVE_ACL |
f8eeeaf9 ZJS |
2414 | acl_free(i->acl_access); |
2415 | acl_free(i->acl_default); | |
2416 | #endif | |
3b63d2d3 LP |
2417 | } |
2418 | ||
87938c3b | 2419 | static ItemArray* item_array_free(ItemArray *a) { |
96d10d78 | 2420 | size_t n; |
3f93da98 ZJS |
2421 | |
2422 | if (!a) | |
87938c3b | 2423 | return NULL; |
3f93da98 | 2424 | |
96d10d78 | 2425 | for (n = 0; n < a->n_items; n++) |
3f93da98 | 2426 | item_free_contents(a->items + n); |
96d10d78 | 2427 | |
811a1587 | 2428 | set_free(a->children); |
3f93da98 | 2429 | free(a->items); |
87938c3b | 2430 | return mfree(a); |
3f93da98 | 2431 | } |
e2f2fb78 | 2432 | |
93bab288 | 2433 | static int item_compare(const Item *a, const Item *b) { |
17493fa5 LP |
2434 | /* Make sure that the ownership taking item is put first, so |
2435 | * that we first create the node, and then can adjust it */ | |
2436 | ||
93bab288 | 2437 | if (takes_ownership(a->type) && !takes_ownership(b->type)) |
17493fa5 | 2438 | return -1; |
93bab288 | 2439 | if (!takes_ownership(a->type) && takes_ownership(b->type)) |
17493fa5 LP |
2440 | return 1; |
2441 | ||
93bab288 | 2442 | return CMP(a->type, b->type); |
17493fa5 LP |
2443 | } |
2444 | ||
3f93da98 | 2445 | static bool item_compatible(Item *a, Item *b) { |
bfe95f35 LP |
2446 | assert(a); |
2447 | assert(b); | |
3f93da98 | 2448 | assert(streq(a->path, b->path)); |
bfe95f35 | 2449 | |
3f93da98 ZJS |
2450 | if (takes_ownership(a->type) && takes_ownership(b->type)) |
2451 | /* check if the items are the same */ | |
2452 | return streq_ptr(a->argument, b->argument) && | |
bfe95f35 | 2453 | |
3f93da98 ZJS |
2454 | a->uid_set == b->uid_set && |
2455 | a->uid == b->uid && | |
bfe95f35 | 2456 | |
3f93da98 ZJS |
2457 | a->gid_set == b->gid_set && |
2458 | a->gid == b->gid && | |
bfe95f35 | 2459 | |
3f93da98 ZJS |
2460 | a->mode_set == b->mode_set && |
2461 | a->mode == b->mode && | |
bfe95f35 | 2462 | |
3f93da98 ZJS |
2463 | a->age_set == b->age_set && |
2464 | a->age == b->age && | |
bfe95f35 | 2465 | |
3f93da98 | 2466 | a->mask_perms == b->mask_perms && |
bfe95f35 | 2467 | |
3f93da98 | 2468 | a->keep_first_level == b->keep_first_level && |
468d726b | 2469 | |
3f93da98 | 2470 | a->major_minor == b->major_minor; |
468d726b | 2471 | |
bfe95f35 LP |
2472 | return true; |
2473 | } | |
2474 | ||
a2aced4a DR |
2475 | static bool should_include_path(const char *path) { |
2476 | char **prefix; | |
2477 | ||
abef3f91 | 2478 | STRV_FOREACH(prefix, arg_exclude_prefixes) |
582deb84 ZJS |
2479 | if (path_startswith(path, *prefix)) { |
2480 | log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.", | |
2481 | path, *prefix); | |
5c795114 | 2482 | return false; |
582deb84 | 2483 | } |
a2aced4a | 2484 | |
abef3f91 | 2485 | STRV_FOREACH(prefix, arg_include_prefixes) |
582deb84 ZJS |
2486 | if (path_startswith(path, *prefix)) { |
2487 | log_debug("Entry \"%s\" matches include prefix \"%s\".", path, *prefix); | |
a2aced4a | 2488 | return true; |
582deb84 | 2489 | } |
a2aced4a | 2490 | |
6b000af4 | 2491 | /* no matches, so we should include this path only if we have no allow list at all */ |
7b943bb7 | 2492 | if (strv_isempty(arg_include_prefixes)) |
582deb84 ZJS |
2493 | return true; |
2494 | ||
2495 | log_debug("Entry \"%s\" does not match any include prefix, skipping.", path); | |
2496 | return false; | |
a2aced4a DR |
2497 | } |
2498 | ||
4cef1923 FB |
2499 | static int specifier_expansion_from_arg(Item *i) { |
2500 | _cleanup_free_ char *unescaped = NULL, *resolved = NULL; | |
2501 | char **xattr; | |
2502 | int r; | |
2503 | ||
2504 | assert(i); | |
2505 | ||
4e361acc | 2506 | if (!i->argument) |
4cef1923 FB |
2507 | return 0; |
2508 | ||
2509 | switch (i->type) { | |
2510 | case COPY_FILES: | |
2511 | case CREATE_SYMLINK: | |
2512 | case CREATE_FILE: | |
2513 | case TRUNCATE_FILE: | |
2514 | case WRITE_FILE: | |
2515 | r = cunescape(i->argument, 0, &unescaped); | |
2516 | if (r < 0) | |
2517 | return log_error_errno(r, "Failed to unescape parameter to write: %s", i->argument); | |
2518 | ||
2519 | r = specifier_printf(unescaped, specifier_table, NULL, &resolved); | |
2520 | if (r < 0) | |
2521 | return r; | |
2522 | ||
2523 | free_and_replace(i->argument, resolved); | |
2524 | break; | |
2525 | ||
2526 | case SET_XATTR: | |
2527 | case RECURSIVE_SET_XATTR: | |
dfe01841 | 2528 | STRV_FOREACH(xattr, i->xattrs) { |
4cef1923 FB |
2529 | r = specifier_printf(*xattr, specifier_table, NULL, &resolved); |
2530 | if (r < 0) | |
2531 | return r; | |
2532 | ||
2533 | free_and_replace(*xattr, resolved); | |
2534 | } | |
2535 | break; | |
2536 | ||
2537 | default: | |
2538 | break; | |
2539 | } | |
2540 | return 0; | |
2541 | } | |
2542 | ||
a2d1fb88 LP |
2543 | static int patch_var_run(const char *fname, unsigned line, char **path) { |
2544 | const char *k; | |
2545 | char *n; | |
2546 | ||
2547 | assert(path); | |
2548 | assert(*path); | |
2549 | ||
2550 | /* Optionally rewrites lines referencing /var/run/, to use /run/ instead. Why bother? tmpfiles merges lines in | |
2551 | * some cases and detects conflicts in others. If files/directories are specified through two equivalent lines | |
2552 | * this is problematic as neither case will be detected. Ideally we'd detect these cases by resolving symlinks | |
2553 | * early, but that's precisely not what we can do here as this code very likely is running very early on, at a | |
2554 | * time where the paths in question are not available yet, or even more importantly, our own tmpfiles rules | |
2555 | * might create the paths that are intermediary to the listed paths. We can't really cover the generic case, | |
2556 | * but the least we can do is cover the specific case of /var/run vs. /run, as /var/run is a legacy name for | |
2557 | * /run only, and we explicitly document that and require that on systemd systems the former is a symlink to | |
2558 | * the latter. Moreover files below this path are by far the primary usecase for tmpfiles.d/. */ | |
2559 | ||
2560 | k = path_startswith(*path, "/var/run/"); | |
2561 | if (isempty(k)) /* Don't complain about other paths than /var/run, and not about /var/run itself either. */ | |
2562 | return 0; | |
2563 | ||
2d9b74ba | 2564 | n = path_join("/run", k); |
a2d1fb88 LP |
2565 | if (!n) |
2566 | return log_oom(); | |
2567 | ||
2568 | /* Also log about this briefly. We do so at LOG_NOTICE level, as we fixed up the situation automatically, hence | |
2569 | * there's no immediate need for action by the user. However, in the interest of making things less confusing | |
2570 | * to the user, let's still inform the user that these snippets should really be updated. */ | |
afb7e1ce | 2571 | log_syntax(NULL, LOG_NOTICE, fname, line, 0, "Line references path below legacy directory /var/run/, updating %s → %s; please update the tmpfiles.d/ drop-in file accordingly.", *path, n); |
a2d1fb88 | 2572 | |
81fa4479 | 2573 | free_and_replace(*path, n); |
a2d1fb88 LP |
2574 | |
2575 | return 0; | |
2576 | } | |
2577 | ||
a3451c2c LP |
2578 | static int find_uid(const char *user, uid_t *ret_uid, Hashmap **cache) { |
2579 | int r; | |
2580 | ||
2581 | assert(user); | |
2582 | assert(ret_uid); | |
2583 | ||
2584 | /* First: parse as numeric UID string */ | |
2585 | r = parse_uid(user, ret_uid); | |
2586 | if (r >= 0) | |
2587 | return r; | |
2588 | ||
2589 | /* Second: pass to NSS if we are running "online" */ | |
2590 | if (!arg_root) | |
2591 | return get_user_creds(&user, ret_uid, NULL, NULL, NULL, 0); | |
2592 | ||
2593 | /* Third, synthesize "root" unconditionally */ | |
2594 | if (streq(user, "root")) { | |
2595 | *ret_uid = 0; | |
2596 | return 0; | |
2597 | } | |
2598 | ||
2599 | /* Fourth: use fgetpwent() to read /etc/passwd directly, if we are "offline" */ | |
2600 | return name_to_uid_offline(arg_root, user, ret_uid, cache); | |
2601 | } | |
2602 | ||
2603 | static int find_gid(const char *group, gid_t *ret_gid, Hashmap **cache) { | |
2604 | int r; | |
2605 | ||
2606 | assert(group); | |
2607 | assert(ret_gid); | |
2608 | ||
2609 | /* First: parse as numeric GID string */ | |
2610 | r = parse_gid(group, ret_gid); | |
2611 | if (r >= 0) | |
2612 | return r; | |
2613 | ||
2614 | /* Second: pass to NSS if we are running "online" */ | |
2615 | if (!arg_root) | |
2616 | return get_group_creds(&group, ret_gid, 0); | |
2617 | ||
2618 | /* Third, synthesize "root" unconditionally */ | |
2619 | if (streq(group, "root")) { | |
2620 | *ret_gid = 0; | |
2621 | return 0; | |
2622 | } | |
2623 | ||
2624 | /* Fourth: use fgetgrent() to read /etc/group directly, if we are "offline" */ | |
2625 | return name_to_gid_offline(arg_root, group, ret_gid, cache); | |
2626 | } | |
2627 | ||
2628 | static int parse_line( | |
2629 | const char *fname, | |
2630 | unsigned line, | |
2631 | const char *buffer, | |
2632 | bool *invalid_config, | |
2633 | Hashmap **uid_cache, | |
2634 | Hashmap **gid_cache) { | |
1731e34a | 2635 | |
cde684a2 | 2636 | _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL; |
3f93da98 ZJS |
2637 | _cleanup_(item_free_contents) Item i = {}; |
2638 | ItemArray *existing; | |
ef43a391 | 2639 | OrderedHashmap *h; |
657cf7f4 | 2640 | int r, pos; |
c55ac248 | 2641 | bool append_or_force = false, boot = false, allow_failure = false; |
3b63d2d3 LP |
2642 | |
2643 | assert(fname); | |
2644 | assert(line >= 1); | |
2645 | assert(buffer); | |
2646 | ||
68685607 | 2647 | r = extract_many_words( |
4034a06d | 2648 | &buffer, |
68685607 | 2649 | NULL, |
4ec85141 | 2650 | EXTRACT_UNQUOTE, |
4034a06d LP |
2651 | &action, |
2652 | &path, | |
2653 | &mode, | |
2654 | &user, | |
2655 | &group, | |
2656 | &age, | |
2657 | NULL); | |
d9daae55 | 2658 | if (r < 0) { |
751223fe ZJS |
2659 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
2660 | /* invalid quoting and such or an unknown specifier */ | |
d9daae55 | 2661 | *invalid_config = true; |
d02933fd | 2662 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to parse line: %m"); |
4b93699d | 2663 | } else if (r < 2) { |
d9daae55 | 2664 | *invalid_config = true; |
d02933fd | 2665 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Syntax error."); |
5008d581 LP |
2666 | } |
2667 | ||
e7b88b7b | 2668 | if (!empty_or_dash(buffer)) { |
4034a06d LP |
2669 | i.argument = strdup(buffer); |
2670 | if (!i.argument) | |
2671 | return log_oom(); | |
2672 | } | |
2673 | ||
2e78fa79 | 2674 | if (isempty(action)) { |
d9daae55 | 2675 | *invalid_config = true; |
d02933fd | 2676 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Command too short '%s'.", action); |
2e78fa79 LP |
2677 | } |
2678 | ||
5f255144 ZJS |
2679 | for (pos = 1; action[pos]; pos++) { |
2680 | if (action[pos] == '!' && !boot) | |
2681 | boot = true; | |
c55ac248 ZS |
2682 | else if (action[pos] == '+' && !append_or_force) |
2683 | append_or_force = true; | |
6d7b5433 WD |
2684 | else if (action[pos] == '-' && !allow_failure) |
2685 | allow_failure = true; | |
5f255144 | 2686 | else { |
d9daae55 | 2687 | *invalid_config = true; |
d02933fd | 2688 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Unknown modifiers in command '%s'", action); |
5f255144 | 2689 | } |
2e78fa79 LP |
2690 | } |
2691 | ||
582deb84 | 2692 | if (boot && !arg_boot) { |
d02933fd | 2693 | log_syntax(NULL, LOG_DEBUG, fname, line, 0, "Ignoring entry %s \"%s\" because --boot is not specified.", action, path); |
c4708f13 | 2694 | return 0; |
582deb84 | 2695 | } |
c4708f13 | 2696 | |
3f93da98 | 2697 | i.type = action[0]; |
c55ac248 | 2698 | i.append_or_force = append_or_force; |
6d7b5433 | 2699 | i.allow_failure = allow_failure; |
2e78fa79 | 2700 | |
3f93da98 | 2701 | r = specifier_printf(path, specifier_table, NULL, &i.path); |
5a8575ef | 2702 | if (r == -ENXIO) |
4cef1923 | 2703 | return log_unresolvable_specifier(fname, line); |
d9daae55 | 2704 | if (r < 0) { |
751223fe ZJS |
2705 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
2706 | *invalid_config = true; | |
d02933fd | 2707 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to replace specifiers in '%s': %m", path); |
d9daae55 | 2708 | } |
1731e34a | 2709 | |
a2d1fb88 LP |
2710 | r = patch_var_run(fname, line, &i.path); |
2711 | if (r < 0) | |
2712 | return r; | |
2713 | ||
3f93da98 | 2714 | switch (i.type) { |
468d726b | 2715 | |
777b87e7 | 2716 | case CREATE_DIRECTORY: |
d7b8eec7 | 2717 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
2718 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
2719 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
df8dee85 | 2720 | case EMPTY_DIRECTORY: |
777b87e7 MS |
2721 | case TRUNCATE_DIRECTORY: |
2722 | case CREATE_FIFO: | |
2723 | case IGNORE_PATH: | |
78a92a5a | 2724 | case IGNORE_DIRECTORY_PATH: |
777b87e7 MS |
2725 | case REMOVE_PATH: |
2726 | case RECURSIVE_REMOVE_PATH: | |
e73a03e0 | 2727 | case ADJUST_MODE: |
777b87e7 MS |
2728 | case RELABEL_PATH: |
2729 | case RECURSIVE_RELABEL_PATH: | |
c82500c6 | 2730 | if (i.argument) |
d02933fd | 2731 | log_syntax(NULL, LOG_WARNING, fname, line, 0, "%c lines don't take argument fields, ignoring.", i.type); |
c82500c6 LP |
2732 | |
2733 | break; | |
2734 | ||
2735 | case CREATE_FILE: | |
2736 | case TRUNCATE_FILE: | |
777b87e7 | 2737 | break; |
468d726b LP |
2738 | |
2739 | case CREATE_SYMLINK: | |
3f93da98 | 2740 | if (!i.argument) { |
b910cc72 | 2741 | i.argument = path_join("/usr/share/factory", i.path); |
3f93da98 | 2742 | if (!i.argument) |
2f3b873a | 2743 | return log_oom(); |
468d726b LP |
2744 | } |
2745 | break; | |
2746 | ||
31ed59c5 | 2747 | case WRITE_FILE: |
3f93da98 | 2748 | if (!i.argument) { |
d9daae55 | 2749 | *invalid_config = true; |
d02933fd | 2750 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Write file requires argument."); |
31ed59c5 LP |
2751 | } |
2752 | break; | |
2753 | ||
849958d1 | 2754 | case COPY_FILES: |
3f93da98 | 2755 | if (!i.argument) { |
7dc6477d | 2756 | i.argument = path_join("/usr/share/factory", i.path); |
3f93da98 | 2757 | if (!i.argument) |
2f3b873a | 2758 | return log_oom(); |
626f8d16 | 2759 | |
3f93da98 | 2760 | } else if (!path_is_absolute(i.argument)) { |
d9daae55 | 2761 | *invalid_config = true; |
d02933fd | 2762 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Source path '%s' is not absolute.", i.argument); |
626f8d16 | 2763 | |
7dc6477d LP |
2764 | } |
2765 | ||
2766 | if (!empty_or_root(arg_root)) { | |
626f8d16 ZJS |
2767 | char *p; |
2768 | ||
d34cd571 | 2769 | p = path_join(arg_root, i.argument); |
626f8d16 ZJS |
2770 | if (!p) |
2771 | return log_oom(); | |
2772 | free_and_replace(i.argument, p); | |
849958d1 LP |
2773 | } |
2774 | ||
858d36c1 | 2775 | path_simplify(i.argument, false); |
849958d1 LP |
2776 | break; |
2777 | ||
468d726b | 2778 | case CREATE_CHAR_DEVICE: |
3a47c40d | 2779 | case CREATE_BLOCK_DEVICE: |
3f93da98 | 2780 | if (!i.argument) { |
d9daae55 | 2781 | *invalid_config = true; |
d02933fd | 2782 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Device file requires argument."); |
468d726b LP |
2783 | } |
2784 | ||
3a47c40d LP |
2785 | r = parse_dev(i.argument, &i.major_minor); |
2786 | if (r < 0) { | |
d9daae55 | 2787 | *invalid_config = true; |
d02933fd | 2788 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Can't parse device file major/minor '%s'.", i.argument); |
468d726b LP |
2789 | } |
2790 | ||
468d726b | 2791 | break; |
468d726b | 2792 | |
ebf4e801 | 2793 | case SET_XATTR: |
b705ab6a | 2794 | case RECURSIVE_SET_XATTR: |
3f93da98 | 2795 | if (!i.argument) { |
d9daae55 | 2796 | *invalid_config = true; |
d02933fd LP |
2797 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
2798 | "Set extended attribute requires argument."); | |
ebf4e801 | 2799 | } |
bd550f78 | 2800 | r = parse_xattrs_from_arg(&i); |
ebf4e801 MW |
2801 | if (r < 0) |
2802 | return r; | |
2803 | break; | |
2804 | ||
f8eeeaf9 | 2805 | case SET_ACL: |
b705ab6a | 2806 | case RECURSIVE_SET_ACL: |
f8eeeaf9 | 2807 | if (!i.argument) { |
d9daae55 | 2808 | *invalid_config = true; |
d02933fd LP |
2809 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
2810 | "Set ACLs requires argument."); | |
f8eeeaf9 | 2811 | } |
bd550f78 | 2812 | r = parse_acls_from_arg(&i); |
f8eeeaf9 ZJS |
2813 | if (r < 0) |
2814 | return r; | |
2815 | break; | |
2816 | ||
88ec4dfa LP |
2817 | case SET_ATTRIBUTE: |
2818 | case RECURSIVE_SET_ATTRIBUTE: | |
22c3a6ca | 2819 | if (!i.argument) { |
d9daae55 | 2820 | *invalid_config = true; |
d02933fd LP |
2821 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
2822 | "Set file attribute requires argument."); | |
22c3a6ca | 2823 | } |
bd550f78 | 2824 | r = parse_attribute_from_arg(&i); |
751223fe | 2825 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
d9daae55 | 2826 | *invalid_config = true; |
22c3a6ca GB |
2827 | if (r < 0) |
2828 | return r; | |
2829 | break; | |
2830 | ||
777b87e7 | 2831 | default: |
d9daae55 | 2832 | *invalid_config = true; |
d02933fd LP |
2833 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
2834 | "Unknown command type '%c'.", (char) i.type); | |
3b63d2d3 | 2835 | } |
468d726b | 2836 | |
3f93da98 | 2837 | if (!path_is_absolute(i.path)) { |
d9daae55 | 2838 | *invalid_config = true; |
d02933fd LP |
2839 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
2840 | "Path '%s' not absolute.", i.path); | |
3b63d2d3 LP |
2841 | } |
2842 | ||
858d36c1 | 2843 | path_simplify(i.path, false); |
3b63d2d3 | 2844 | |
3f93da98 | 2845 | if (!should_include_path(i.path)) |
7f2c1f4d | 2846 | return 0; |
5008d581 | 2847 | |
4cef1923 | 2848 | r = specifier_expansion_from_arg(&i); |
5a8575ef | 2849 | if (r == -ENXIO) |
4cef1923 | 2850 | return log_unresolvable_specifier(fname, line); |
751223fe ZJS |
2851 | if (r < 0) { |
2852 | if (IN_SET(r, -EINVAL, -EBADSLT)) | |
2853 | *invalid_config = true; | |
d02933fd | 2854 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to substitute specifiers in argument: %m"); |
751223fe | 2855 | } |
4cef1923 | 2856 | |
7dc6477d | 2857 | if (!empty_or_root(arg_root)) { |
cde684a2 LP |
2858 | char *p; |
2859 | ||
c6134d3e | 2860 | p = path_join(arg_root, i.path); |
cf9a4abd MM |
2861 | if (!p) |
2862 | return log_oom(); | |
81fa4479 | 2863 | free_and_replace(i.path, p); |
cf9a4abd MM |
2864 | } |
2865 | ||
e7b88b7b | 2866 | if (!empty_or_dash(user)) { |
a3451c2c | 2867 | r = find_uid(user, &i.uid, uid_cache); |
4b67834e | 2868 | if (r < 0) { |
d9daae55 | 2869 | *invalid_config = true; |
d02933fd | 2870 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to resolve user '%s': %m", user); |
3b63d2d3 LP |
2871 | } |
2872 | ||
3f93da98 | 2873 | i.uid_set = true; |
3b63d2d3 LP |
2874 | } |
2875 | ||
e7b88b7b | 2876 | if (!empty_or_dash(group)) { |
a3451c2c | 2877 | r = find_gid(group, &i.gid, gid_cache); |
4b67834e | 2878 | if (r < 0) { |
d9daae55 | 2879 | *invalid_config = true; |
d02933fd | 2880 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to resolve group '%s'.", group); |
3b63d2d3 LP |
2881 | } |
2882 | ||
3f93da98 | 2883 | i.gid_set = true; |
3b63d2d3 LP |
2884 | } |
2885 | ||
e7b88b7b | 2886 | if (!empty_or_dash(mode)) { |
abef3f91 | 2887 | const char *mm = mode; |
3b63d2d3 LP |
2888 | unsigned m; |
2889 | ||
abef3f91 | 2890 | if (*mm == '~') { |
3f93da98 | 2891 | i.mask_perms = true; |
abef3f91 LP |
2892 | mm++; |
2893 | } | |
2894 | ||
d02933fd LP |
2895 | r = parse_mode(mm, &m); |
2896 | if (r < 0) { | |
d9daae55 | 2897 | *invalid_config = true; |
d02933fd | 2898 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Invalid mode '%s'.", mode); |
3b63d2d3 LP |
2899 | } |
2900 | ||
3f93da98 ZJS |
2901 | i.mode = m; |
2902 | i.mode_set = true; | |
3b63d2d3 | 2903 | } else |
5fb13eb5 | 2904 | i.mode = IN_SET(i.type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA) ? 0755 : 0644; |
3b63d2d3 | 2905 | |
e7b88b7b | 2906 | if (!empty_or_dash(age)) { |
24f3a374 LP |
2907 | const char *a = age; |
2908 | ||
2909 | if (*a == '~') { | |
3f93da98 | 2910 | i.keep_first_level = true; |
24f3a374 LP |
2911 | a++; |
2912 | } | |
2913 | ||
d02933fd LP |
2914 | r = parse_sec(a, &i.age); |
2915 | if (r < 0) { | |
d9daae55 | 2916 | *invalid_config = true; |
d02933fd | 2917 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Invalid age '%s'.", age); |
3b63d2d3 LP |
2918 | } |
2919 | ||
3f93da98 | 2920 | i.age_set = true; |
3b63d2d3 LP |
2921 | } |
2922 | ||
3f93da98 | 2923 | h = needs_glob(i.type) ? globs : items; |
bfe95f35 | 2924 | |
ef43a391 | 2925 | existing = ordered_hashmap_get(h, i.path); |
468d726b | 2926 | if (existing) { |
96d10d78 | 2927 | size_t n; |
3f93da98 | 2928 | |
96d10d78 | 2929 | for (n = 0; n < existing->n_items; n++) { |
d0ea5c5e | 2930 | if (!item_compatible(existing->items + n, &i) && !i.append_or_force) { |
d02933fd | 2931 | log_syntax(NULL, LOG_NOTICE, fname, line, 0, "Duplicate line for path \"%s\", ignoring.", i.path); |
6487ada8 MP |
2932 | return 0; |
2933 | } | |
ebf4e801 MW |
2934 | } |
2935 | } else { | |
3f93da98 | 2936 | existing = new0(ItemArray, 1); |
07982ed1 LP |
2937 | if (!existing) |
2938 | return log_oom(); | |
2939 | ||
ef43a391 | 2940 | r = ordered_hashmap_put(h, i.path, existing); |
ccd114f0 LP |
2941 | if (r < 0) { |
2942 | free(existing); | |
3f93da98 | 2943 | return log_oom(); |
ccd114f0 | 2944 | } |
bfe95f35 LP |
2945 | } |
2946 | ||
96d10d78 | 2947 | if (!GREEDY_REALLOC(existing->items, existing->allocated, existing->n_items + 1)) |
3f93da98 | 2948 | return log_oom(); |
5008d581 | 2949 | |
7ab7529d LP |
2950 | existing->items[existing->n_items++] = i; |
2951 | i = (struct Item) {}; | |
dd449aca ZJS |
2952 | |
2953 | /* Sort item array, to enforce stable ordering of application */ | |
96d10d78 | 2954 | typesafe_qsort(existing->items, existing->n_items, item_compare); |
17493fa5 | 2955 | |
7f2c1f4d | 2956 | return 0; |
5008d581 LP |
2957 | } |
2958 | ||
ceaaeb9b ZJS |
2959 | static int cat_config(char **config_dirs, char **args) { |
2960 | _cleanup_strv_free_ char **files = NULL; | |
2961 | int r; | |
2962 | ||
2963 | r = conf_files_list_with_replacement(arg_root, config_dirs, arg_replace, &files, NULL); | |
2964 | if (r < 0) | |
2965 | return r; | |
2966 | ||
2967 | return cat_files(NULL, files, 0); | |
2968 | } | |
2969 | ||
dd04fb32 LP |
2970 | static int exclude_default_prefixes(void) { |
2971 | int r; | |
2972 | ||
2973 | /* Provide an easy way to exclude virtual/memory file systems from what we do here. Useful in | |
2974 | * combination with --root= where we probably don't want to apply stuff to these dirs as they are | |
2975 | * likely over-mounted if the root directory is actually used, and it wouldbe less than ideal to have | |
2976 | * all kinds of files created/adjusted underneath these mount points. */ | |
2977 | ||
2978 | r = strv_extend_strv( | |
2979 | &arg_exclude_prefixes, | |
2980 | STRV_MAKE("/dev", | |
2981 | "/proc", | |
2982 | "/run", | |
2983 | "/sys"), | |
2984 | true); | |
2985 | if (r < 0) | |
2986 | return log_oom(); | |
2987 | ||
2988 | return 0; | |
2989 | } | |
2990 | ||
37ec0fdd LP |
2991 | static int help(void) { |
2992 | _cleanup_free_ char *link = NULL; | |
2993 | int r; | |
2994 | ||
2995 | r = terminal_urlify_man("systemd-tmpfiles", "8", &link); | |
2996 | if (r < 0) | |
2997 | return log_oom(); | |
2998 | ||
3f532a59 LP |
2999 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n" |
3000 | "\n%sCreates, deletes and cleans up volatile and temporary files and directories.%s\n\n" | |
5c795114 | 3001 | " -h --help Show this help\n" |
f2b5ca0e | 3002 | " --user Execute user configuration\n" |
eb9da376 | 3003 | " --version Show package version\n" |
ceaaeb9b | 3004 | " --cat-config Show configuration files\n" |
5c795114 DR |
3005 | " --create Create marked files/directories\n" |
3006 | " --clean Clean up marked directories\n" | |
3007 | " --remove Remove marked files/directories\n" | |
81815651 | 3008 | " --boot Execute actions only safe at boot\n" |
79ca888f ZJS |
3009 | " --prefix=PATH Only apply rules with the specified prefix\n" |
3010 | " --exclude-prefix=PATH Ignore rules with the specified prefix\n" | |
dd04fb32 | 3011 | " -E Ignore rules prefixed with /dev, /proc, /run, /sys\n" |
d9daae55 | 3012 | " --root=PATH Operate on an alternate filesystem root\n" |
63d3d0a5 | 3013 | " --image=PATH Operate on disk image as filesystem root\n" |
a6d8474f | 3014 | " --replace=PATH Treat arguments as replacement for PATH\n" |
dcd5c891 | 3015 | " --no-pager Do not pipe output into a pager\n" |
bc556335 DDM |
3016 | "\nSee the %s for details.\n", |
3017 | program_invocation_short_name, | |
3018 | ansi_highlight(), | |
3019 | ansi_normal(), | |
3020 | link); | |
37ec0fdd LP |
3021 | |
3022 | return 0; | |
3b63d2d3 LP |
3023 | } |
3024 | ||
3025 | static int parse_argv(int argc, char *argv[]) { | |
3026 | ||
3027 | enum { | |
eb9da376 | 3028 | ARG_VERSION = 0x100, |
ceaaeb9b | 3029 | ARG_CAT_CONFIG, |
f2b5ca0e | 3030 | ARG_USER, |
3b63d2d3 LP |
3031 | ARG_CREATE, |
3032 | ARG_CLEAN, | |
fba6e687 | 3033 | ARG_REMOVE, |
81815651 | 3034 | ARG_BOOT, |
5c795114 DR |
3035 | ARG_PREFIX, |
3036 | ARG_EXCLUDE_PREFIX, | |
cf9a4abd | 3037 | ARG_ROOT, |
63d3d0a5 | 3038 | ARG_IMAGE, |
a6d8474f | 3039 | ARG_REPLACE, |
dcd5c891 | 3040 | ARG_NO_PAGER, |
3b63d2d3 LP |
3041 | }; |
3042 | ||
3043 | static const struct option options[] = { | |
5c795114 | 3044 | { "help", no_argument, NULL, 'h' }, |
f2b5ca0e | 3045 | { "user", no_argument, NULL, ARG_USER }, |
eb9da376 | 3046 | { "version", no_argument, NULL, ARG_VERSION }, |
ceaaeb9b | 3047 | { "cat-config", no_argument, NULL, ARG_CAT_CONFIG }, |
5c795114 DR |
3048 | { "create", no_argument, NULL, ARG_CREATE }, |
3049 | { "clean", no_argument, NULL, ARG_CLEAN }, | |
3050 | { "remove", no_argument, NULL, ARG_REMOVE }, | |
81815651 | 3051 | { "boot", no_argument, NULL, ARG_BOOT }, |
5c795114 DR |
3052 | { "prefix", required_argument, NULL, ARG_PREFIX }, |
3053 | { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX }, | |
cf9a4abd | 3054 | { "root", required_argument, NULL, ARG_ROOT }, |
63d3d0a5 | 3055 | { "image", required_argument, NULL, ARG_IMAGE }, |
a6d8474f | 3056 | { "replace", required_argument, NULL, ARG_REPLACE }, |
dcd5c891 | 3057 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, |
eb9da376 | 3058 | {} |
3b63d2d3 LP |
3059 | }; |
3060 | ||
0f474365 | 3061 | int c, r; |
3b63d2d3 LP |
3062 | |
3063 | assert(argc >= 0); | |
3064 | assert(argv); | |
3065 | ||
dd04fb32 | 3066 | while ((c = getopt_long(argc, argv, "hE", options, NULL)) >= 0) |
3b63d2d3 LP |
3067 | |
3068 | switch (c) { | |
3069 | ||
3070 | case 'h': | |
37ec0fdd | 3071 | return help(); |
eb9da376 LP |
3072 | |
3073 | case ARG_VERSION: | |
3f6fd1ba | 3074 | return version(); |
3b63d2d3 | 3075 | |
ceaaeb9b ZJS |
3076 | case ARG_CAT_CONFIG: |
3077 | arg_cat_config = true; | |
3078 | break; | |
3079 | ||
f2b5ca0e ZJS |
3080 | case ARG_USER: |
3081 | arg_user = true; | |
3082 | break; | |
3083 | ||
3b63d2d3 | 3084 | case ARG_CREATE: |
1a967b6b | 3085 | arg_operation |= OPERATION_CREATE; |
3b63d2d3 LP |
3086 | break; |
3087 | ||
3088 | case ARG_CLEAN: | |
1a967b6b | 3089 | arg_operation |= OPERATION_CLEAN; |
3b63d2d3 LP |
3090 | break; |
3091 | ||
3092 | case ARG_REMOVE: | |
1a967b6b | 3093 | arg_operation |= OPERATION_REMOVE; |
3b63d2d3 LP |
3094 | break; |
3095 | ||
81815651 ZJS |
3096 | case ARG_BOOT: |
3097 | arg_boot = true; | |
c4708f13 ZJS |
3098 | break; |
3099 | ||
fba6e687 | 3100 | case ARG_PREFIX: |
7bc040fa | 3101 | if (strv_push(&arg_include_prefixes, optarg) < 0) |
a2aced4a | 3102 | return log_oom(); |
fba6e687 LP |
3103 | break; |
3104 | ||
5c795114 | 3105 | case ARG_EXCLUDE_PREFIX: |
7bc040fa | 3106 | if (strv_push(&arg_exclude_prefixes, optarg) < 0) |
5c795114 DR |
3107 | return log_oom(); |
3108 | break; | |
3109 | ||
63d3d0a5 LP |
3110 | case ARG_ROOT: |
3111 | r = parse_path_argument_and_warn(optarg, /* suppress_root= */ false, &arg_root); | |
dd04fb32 LP |
3112 | if (r < 0) |
3113 | return r; | |
dd04fb32 LP |
3114 | break; |
3115 | ||
63d3d0a5 | 3116 | case ARG_IMAGE: |
3537577c ZJS |
3117 | #ifdef STANDALONE |
3118 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3119 | "This systemd-tmpfiles version is compiled without support for --image=."); | |
3120 | #else | |
63d3d0a5 LP |
3121 | r = parse_path_argument_and_warn(optarg, /* suppress_root= */ false, &arg_image); |
3122 | if (r < 0) | |
3123 | return r; | |
3537577c ZJS |
3124 | #endif |
3125 | /* Imply -E here since it makes little sense to create files persistently in the /run mountpoint of a disk image */ | |
63d3d0a5 LP |
3126 | _fallthrough_; |
3127 | ||
3128 | case 'E': | |
3129 | r = exclude_default_prefixes(); | |
0f474365 | 3130 | if (r < 0) |
0f03c2a4 | 3131 | return r; |
63d3d0a5 | 3132 | |
cf9a4abd MM |
3133 | break; |
3134 | ||
a6d8474f ZJS |
3135 | case ARG_REPLACE: |
3136 | if (!path_is_absolute(optarg) || | |
baaa35ad ZJS |
3137 | !endswith(optarg, ".conf")) |
3138 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3139 | "The argument to --replace= must an absolute path to a config file"); | |
a6d8474f ZJS |
3140 | |
3141 | arg_replace = optarg; | |
3142 | break; | |
3143 | ||
dcd5c891 | 3144 | case ARG_NO_PAGER: |
0221d68a | 3145 | arg_pager_flags |= PAGER_DISABLE; |
dcd5c891 LP |
3146 | break; |
3147 | ||
3b63d2d3 LP |
3148 | case '?': |
3149 | return -EINVAL; | |
3150 | ||
3151 | default: | |
eb9da376 | 3152 | assert_not_reached("Unhandled option"); |
3b63d2d3 | 3153 | } |
3b63d2d3 | 3154 | |
baaa35ad ZJS |
3155 | if (arg_operation == 0 && !arg_cat_config) |
3156 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3157 | "You need to specify at least one of --clean, --create or --remove."); | |
3b63d2d3 | 3158 | |
baaa35ad ZJS |
3159 | if (arg_replace && arg_cat_config) |
3160 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3161 | "Option --replace= is not supported with --cat-config"); | |
ceaaeb9b | 3162 | |
baaa35ad ZJS |
3163 | if (arg_replace && optind >= argc) |
3164 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3165 | "When --replace= is given, some configuration items must be specified"); | |
a6d8474f | 3166 | |
b63aacaa LP |
3167 | if (arg_root && arg_user) |
3168 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3169 | "Combination of --user and --root= is not supported."); | |
3170 | ||
63d3d0a5 LP |
3171 | if (arg_image && arg_root) |
3172 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported."); | |
3173 | ||
3b63d2d3 LP |
3174 | return 1; |
3175 | } | |
3176 | ||
a6d8474f | 3177 | static int read_config_file(char **config_dirs, const char *fn, bool ignore_enoent, bool *invalid_config) { |
a3451c2c | 3178 | _cleanup_(hashmap_freep) Hashmap *uid_cache = NULL, *gid_cache = NULL; |
f7ac1ed2 | 3179 | _cleanup_fclose_ FILE *_f = NULL; |
1731e34a | 3180 | unsigned v = 0; |
2a98ae4a | 3181 | FILE *f; |
78a92a5a | 3182 | Item *i; |
4e68ec18 | 3183 | int r = 0; |
fba6e687 LP |
3184 | |
3185 | assert(fn); | |
3186 | ||
f7ac1ed2 | 3187 | if (streq(fn, "-")) { |
a6d8474f | 3188 | log_debug("Reading config from stdin…"); |
f7ac1ed2 ZJS |
3189 | fn = "<stdin>"; |
3190 | f = stdin; | |
3191 | } else { | |
a6d8474f | 3192 | r = search_and_fopen(fn, "re", arg_root, (const char**) config_dirs, &_f); |
f7ac1ed2 ZJS |
3193 | if (r < 0) { |
3194 | if (ignore_enoent && r == -ENOENT) { | |
3195 | log_debug_errno(r, "Failed to open \"%s\", ignoring: %m", fn); | |
3196 | return 0; | |
3197 | } | |
fba6e687 | 3198 | |
f7ac1ed2 ZJS |
3199 | return log_error_errno(r, "Failed to open '%s': %m", fn); |
3200 | } | |
a6d8474f | 3201 | log_debug("Reading config file \"%s\"…", fn); |
f7ac1ed2 | 3202 | f = _f; |
fba6e687 LP |
3203 | } |
3204 | ||
2a98ae4a LP |
3205 | for (;;) { |
3206 | _cleanup_free_ char *line = NULL; | |
3207 | bool invalid_line = false; | |
1731e34a | 3208 | char *l; |
fba6e687 | 3209 | int k; |
2a98ae4a LP |
3210 | |
3211 | k = read_line(f, LONG_LINE_MAX, &line); | |
3212 | if (k < 0) | |
3213 | return log_error_errno(k, "Failed to read '%s': %m", fn); | |
3214 | if (k == 0) | |
3215 | break; | |
fba6e687 | 3216 | |
fba6e687 LP |
3217 | v++; |
3218 | ||
3219 | l = strstrip(line); | |
4c701096 | 3220 | if (IN_SET(*l, 0, '#')) |
fba6e687 LP |
3221 | continue; |
3222 | ||
a3451c2c | 3223 | k = parse_line(fn, v, l, &invalid_line, &uid_cache, &gid_cache); |
d9daae55 ZJS |
3224 | if (k < 0) { |
3225 | if (invalid_line) | |
3226 | /* Allow reporting with a special code if the caller requested this */ | |
3227 | *invalid_config = true; | |
3228 | else if (r == 0) | |
3229 | /* The first error becomes our return value */ | |
3230 | r = k; | |
3231 | } | |
fba6e687 LP |
3232 | } |
3233 | ||
78a92a5a | 3234 | /* we have to determine age parameter for each entry of type X */ |
90e74a66 | 3235 | ORDERED_HASHMAP_FOREACH(i, globs) { |
78a92a5a MS |
3236 | Item *j, *candidate_item = NULL; |
3237 | ||
3238 | if (i->type != IGNORE_DIRECTORY_PATH) | |
3239 | continue; | |
3240 | ||
90e74a66 | 3241 | ORDERED_HASHMAP_FOREACH(j, items) { |
5fb13eb5 | 3242 | if (!IN_SET(j->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA)) |
78a92a5a MS |
3243 | continue; |
3244 | ||
3245 | if (path_equal(j->path, i->path)) { | |
3246 | candidate_item = j; | |
3247 | break; | |
3248 | } | |
3249 | ||
3250 | if ((!candidate_item && path_startswith(i->path, j->path)) || | |
3251 | (candidate_item && path_startswith(j->path, candidate_item->path) && (fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0))) | |
3252 | candidate_item = j; | |
3253 | } | |
3254 | ||
9ed2a35e | 3255 | if (candidate_item && candidate_item->age_set) { |
78a92a5a MS |
3256 | i->age = candidate_item->age; |
3257 | i->age_set = true; | |
3258 | } | |
3259 | } | |
3260 | ||
fba6e687 | 3261 | if (ferror(f)) { |
56f64d95 | 3262 | log_error_errno(errno, "Failed to read from file %s: %m", fn); |
fba6e687 LP |
3263 | if (r == 0) |
3264 | r = -EIO; | |
3265 | } | |
3266 | ||
fba6e687 LP |
3267 | return r; |
3268 | } | |
3269 | ||
a6d8474f ZJS |
3270 | static int parse_arguments(char **config_dirs, char **args, bool *invalid_config) { |
3271 | char **arg; | |
3272 | int r; | |
3273 | ||
3274 | STRV_FOREACH(arg, args) { | |
3275 | r = read_config_file(config_dirs, *arg, false, invalid_config); | |
3276 | if (r < 0) | |
3277 | return r; | |
3278 | } | |
3279 | ||
3280 | return 0; | |
3281 | } | |
3282 | ||
3283 | static int read_config_files(char **config_dirs, char **args, bool *invalid_config) { | |
3284 | _cleanup_strv_free_ char **files = NULL; | |
3285 | _cleanup_free_ char *p = NULL; | |
3286 | char **f; | |
3287 | int r; | |
3288 | ||
ceaaeb9b | 3289 | r = conf_files_list_with_replacement(arg_root, config_dirs, arg_replace, &files, &p); |
a6d8474f | 3290 | if (r < 0) |
ceaaeb9b | 3291 | return r; |
a6d8474f ZJS |
3292 | |
3293 | STRV_FOREACH(f, files) | |
3294 | if (p && path_equal(*f, p)) { | |
3295 | log_debug("Parsing arguments at position \"%s\"…", *f); | |
3296 | ||
3297 | r = parse_arguments(config_dirs, args, invalid_config); | |
3298 | if (r < 0) | |
3299 | return r; | |
3300 | } else | |
3301 | /* Just warn, ignore result otherwise. | |
3302 | * read_config_file() has some debug output, so no need to print anything. */ | |
3303 | (void) read_config_file(config_dirs, *f, true, invalid_config); | |
3304 | ||
3305 | return 0; | |
3306 | } | |
3307 | ||
811a1587 LP |
3308 | static int link_parent(ItemArray *a) { |
3309 | const char *path; | |
3310 | char *prefix; | |
3311 | int r; | |
3312 | ||
3313 | assert(a); | |
3314 | ||
09f467ac | 3315 | /* Finds the closest "parent" item array for the specified item array. Then registers the specified item array |
811a1587 LP |
3316 | * as child of it, and fills the parent in, linking them both ways. This allows us to later create parents |
3317 | * before their children, and clean up/remove children before their parents. */ | |
3318 | ||
3319 | if (a->n_items <= 0) | |
3320 | return 0; | |
3321 | ||
3322 | path = a->items[0].path; | |
6e9417f5 | 3323 | prefix = newa(char, strlen(path) + 1); |
811a1587 LP |
3324 | PATH_FOREACH_PREFIX(prefix, path) { |
3325 | ItemArray *j; | |
3326 | ||
3327 | j = ordered_hashmap_get(items, prefix); | |
bd0ce244 LP |
3328 | if (!j) |
3329 | j = ordered_hashmap_get(globs, prefix); | |
811a1587 | 3330 | if (j) { |
de7fef4b | 3331 | r = set_ensure_put(&j->children, NULL, a); |
811a1587 LP |
3332 | if (r < 0) |
3333 | return log_oom(); | |
3334 | ||
3335 | a->parent = j; | |
3336 | return 1; | |
3337 | } | |
3338 | } | |
3339 | ||
3340 | return 0; | |
3341 | } | |
3342 | ||
87938c3b YW |
3343 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(item_array_hash_ops, char, string_hash_func, string_compare_func, |
3344 | ItemArray, item_array_free); | |
3345 | ||
3346 | static int run(int argc, char *argv[]) { | |
3537577c | 3347 | #ifndef STANDALONE |
63d3d0a5 LP |
3348 | _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; |
3349 | _cleanup_(decrypted_image_unrefp) DecryptedImage *decrypted_image = NULL; | |
3350 | _cleanup_(umount_and_rmdir_and_freep) char *unlink_dir = NULL; | |
3537577c | 3351 | #endif |
f2b5ca0e | 3352 | _cleanup_strv_free_ char **config_dirs = NULL; |
d9daae55 | 3353 | bool invalid_config = false; |
64adb379 | 3354 | ItemArray *a; |
44ac4f88 LP |
3355 | enum { |
3356 | PHASE_REMOVE_AND_CLEAN, | |
3357 | PHASE_CREATE, | |
3358 | _PHASE_MAX | |
3359 | } phase; | |
87938c3b | 3360 | int r, k; |
3b63d2d3 | 3361 | |
fdcad0c2 LP |
3362 | r = parse_argv(argc, argv); |
3363 | if (r <= 0) | |
87938c3b | 3364 | return r; |
5008d581 | 3365 | |
d2acb93d | 3366 | log_setup(); |
5008d581 | 3367 | |
e5358401 LP |
3368 | /* Descending down file system trees might take a lot of fds */ |
3369 | (void) rlimit_nofile_bump(HIGH_RLIMIT_NOFILE); | |
3370 | ||
f2b5ca0e ZJS |
3371 | if (arg_user) { |
3372 | r = user_config_paths(&config_dirs); | |
87938c3b YW |
3373 | if (r < 0) |
3374 | return log_error_errno(r, "Failed to initialize configuration directory list: %m"); | |
f2b5ca0e ZJS |
3375 | } else { |
3376 | config_dirs = strv_split_nulstr(CONF_PATHS_NULSTR("tmpfiles.d")); | |
87938c3b YW |
3377 | if (!config_dirs) |
3378 | return log_oom(); | |
f2b5ca0e ZJS |
3379 | } |
3380 | ||
79c91cec | 3381 | if (DEBUG_LOGGING) { |
f2b5ca0e | 3382 | _cleanup_free_ char *t = NULL; |
b8e35011 | 3383 | char **i; |
f2b5ca0e | 3384 | |
b8e35011 LP |
3385 | STRV_FOREACH(i, config_dirs) { |
3386 | _cleanup_free_ char *j = NULL; | |
3387 | ||
3388 | j = path_join(arg_root, *i); | |
3389 | if (!j) | |
3390 | return log_oom(); | |
3391 | ||
c2bc710b | 3392 | if (!strextend(&t, "\n\t", j)) |
b8e35011 LP |
3393 | return log_oom(); |
3394 | } | |
3395 | ||
3396 | log_debug("Looking for configuration files in (higher priority first):%s", t); | |
f2b5ca0e ZJS |
3397 | } |
3398 | ||
ceaaeb9b | 3399 | if (arg_cat_config) { |
0221d68a | 3400 | (void) pager_open(arg_pager_flags); |
dcd5c891 | 3401 | |
87938c3b | 3402 | return cat_config(config_dirs, argv + optind); |
ceaaeb9b ZJS |
3403 | } |
3404 | ||
3405 | umask(0022); | |
3406 | ||
a9ba0e32 CG |
3407 | r = mac_selinux_init(); |
3408 | if (r < 0) | |
3409 | return r; | |
ceaaeb9b | 3410 | |
3537577c | 3411 | #ifndef STANDALONE |
63d3d0a5 LP |
3412 | if (arg_image) { |
3413 | assert(!arg_root); | |
3414 | ||
3415 | r = mount_image_privately_interactively( | |
3416 | arg_image, | |
3417 | DISSECT_IMAGE_REQUIRE_ROOT|DISSECT_IMAGE_VALIDATE_OS|DISSECT_IMAGE_RELAX_VAR_CHECK|DISSECT_IMAGE_FSCK, | |
3418 | &unlink_dir, | |
3419 | &loop_device, | |
3420 | &decrypted_image); | |
3421 | if (r < 0) | |
3422 | return r; | |
3423 | ||
3424 | arg_root = strdup(unlink_dir); | |
3425 | if (!arg_root) | |
3426 | return log_oom(); | |
3427 | } | |
3537577c ZJS |
3428 | #else |
3429 | assert(!arg_image); | |
3430 | #endif | |
63d3d0a5 | 3431 | |
87938c3b YW |
3432 | items = ordered_hashmap_new(&item_array_hash_ops); |
3433 | globs = ordered_hashmap_new(&item_array_hash_ops); | |
3434 | if (!items || !globs) | |
3435 | return log_oom(); | |
ceaaeb9b | 3436 | |
a6d8474f ZJS |
3437 | /* If command line arguments are specified along with --replace, read all |
3438 | * configuration files and insert the positional arguments at the specified | |
3439 | * place. Otherwise, if command line arguments are specified, execute just | |
3440 | * them, and finally, without --replace= or any positional arguments, just | |
3441 | * read configuration and execute it. | |
3442 | */ | |
3443 | if (arg_replace || optind >= argc) | |
3444 | r = read_config_files(config_dirs, argv + optind, &invalid_config); | |
3445 | else | |
3446 | r = parse_arguments(config_dirs, argv + optind, &invalid_config); | |
3447 | if (r < 0) | |
87938c3b | 3448 | return r; |
5008d581 | 3449 | |
811a1587 | 3450 | /* Let's now link up all child/parent relationships */ |
90e74a66 | 3451 | ORDERED_HASHMAP_FOREACH(a, items) { |
811a1587 LP |
3452 | r = link_parent(a); |
3453 | if (r < 0) | |
87938c3b | 3454 | return r; |
1db50423 | 3455 | } |
90e74a66 | 3456 | ORDERED_HASHMAP_FOREACH(a, globs) { |
811a1587 LP |
3457 | r = link_parent(a); |
3458 | if (r < 0) | |
87938c3b | 3459 | return r; |
811a1587 LP |
3460 | } |
3461 | ||
64adb379 LP |
3462 | /* If multiple operations are requested, let's first run the remove/clean operations, and only then the create |
3463 | * operations. i.e. that we first clean out the platform we then build on. */ | |
44ac4f88 | 3464 | for (phase = 0; phase < _PHASE_MAX; phase++) { |
64adb379 | 3465 | OperationMask op; |
b8bb3e8f | 3466 | |
44ac4f88 | 3467 | if (phase == PHASE_REMOVE_AND_CLEAN) |
64adb379 | 3468 | op = arg_operation & (OPERATION_REMOVE|OPERATION_CLEAN); |
44ac4f88 | 3469 | else if (phase == PHASE_CREATE) |
64adb379 LP |
3470 | op = arg_operation & OPERATION_CREATE; |
3471 | else | |
3472 | assert_not_reached("unexpected phase"); | |
3473 | ||
3474 | if (op == 0) /* Nothing requested in this phase */ | |
3475 | continue; | |
3476 | ||
3477 | /* The non-globbing ones usually create things, hence we apply them first */ | |
90e74a66 | 3478 | ORDERED_HASHMAP_FOREACH(a, items) { |
64adb379 | 3479 | k = process_item_array(a, op); |
87938c3b YW |
3480 | if (k < 0 && r >= 0) |
3481 | r = k; | |
64adb379 LP |
3482 | } |
3483 | ||
3484 | /* The globbing ones usually alter things, hence we apply them second. */ | |
90e74a66 | 3485 | ORDERED_HASHMAP_FOREACH(a, globs) { |
64adb379 | 3486 | k = process_item_array(a, op); |
87938c3b YW |
3487 | if (k < 0 && r >= 0) |
3488 | r = k; | |
64adb379 | 3489 | } |
1db50423 | 3490 | } |
3b63d2d3 | 3491 | |
95d2155a | 3492 | if (ERRNO_IS_RESOURCE(r)) |
87938c3b YW |
3493 | return r; |
3494 | if (invalid_config) | |
d9daae55 | 3495 | return EX_DATAERR; |
87938c3b | 3496 | if (r < 0) |
bb9947be | 3497 | return EX_CANTCREAT; |
87938c3b | 3498 | return 0; |
5008d581 | 3499 | } |
87938c3b YW |
3500 | |
3501 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |