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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" |
4368c60c | 30 | #include "env-util.h" |
4f5dd394 | 31 | #include "escape.h" |
3ffd4af2 | 32 | #include "fd-util.h" |
0d39fa9c | 33 | #include "fileio.h" |
f97b34a6 | 34 | #include "format-util.h" |
f4f15635 | 35 | #include "fs-util.h" |
7d50b32a | 36 | #include "glob-util.h" |
c004493c | 37 | #include "io-util.h" |
3f6fd1ba | 38 | #include "label.h" |
5008d581 | 39 | #include "log.h" |
54693d9b | 40 | #include "macro.h" |
87938c3b | 41 | #include "main-func.h" |
ddb439b8 LP |
42 | #include "missing_stat.h" |
43 | #include "missing_syscall.h" | |
49e942b2 | 44 | #include "mkdir.h" |
63d3d0a5 | 45 | #include "mount-util.h" |
049af8ad | 46 | #include "mountpoint-util.h" |
a3451c2c | 47 | #include "offline-passwd.h" |
dcd5c891 | 48 | #include "pager.h" |
614b022c | 49 | #include "parse-argument.h" |
6bedfcbb | 50 | #include "parse-util.h" |
f2b5ca0e | 51 | #include "path-lookup.h" |
9eb977db | 52 | #include "path-util.h" |
294bf0c3 | 53 | #include "pretty-print.h" |
e5358401 | 54 | #include "rlimit-util.h" |
c6878637 | 55 | #include "rm-rf.h" |
d7b8eec7 | 56 | #include "selinux-util.h" |
3f6fd1ba | 57 | #include "set.h" |
760877e9 | 58 | #include "sort-util.h" |
3f6fd1ba | 59 | #include "specifier.h" |
8fcde012 | 60 | #include "stat-util.h" |
15a5e950 | 61 | #include "stdio-util.h" |
8b43440b | 62 | #include "string-table.h" |
07630cea | 63 | #include "string-util.h" |
3f6fd1ba | 64 | #include "strv.h" |
3f532a59 | 65 | #include "terminal-util.h" |
affb60b1 | 66 | #include "umask-util.h" |
b1d4f8e1 | 67 | #include "user-util.h" |
5008d581 | 68 | |
01000479 | 69 | /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates |
5008d581 | 70 | * them in the file system. This is intended to be used to create |
db019b8d KS |
71 | * properly owned directories beneath /tmp, /var/tmp, /run, which are |
72 | * volatile and hence need to be recreated on bootup. */ | |
5008d581 | 73 | |
1a967b6b LP |
74 | typedef enum OperationMask { |
75 | OPERATION_CREATE = 1 << 0, | |
76 | OPERATION_REMOVE = 1 << 1, | |
77 | OPERATION_CLEAN = 1 << 2, | |
78 | } OperationMask; | |
79 | ||
66ccd038 | 80 | typedef enum ItemType { |
b8bb3e8f | 81 | /* These ones take file names */ |
3b63d2d3 | 82 | CREATE_FILE = 'f', |
eccebf4b | 83 | TRUNCATE_FILE = 'F', /* deprecated: use f+ */ |
3b63d2d3 LP |
84 | CREATE_DIRECTORY = 'd', |
85 | TRUNCATE_DIRECTORY = 'D', | |
d7b8eec7 | 86 | CREATE_SUBVOLUME = 'v', |
5fb13eb5 LP |
87 | CREATE_SUBVOLUME_INHERIT_QUOTA = 'q', |
88 | CREATE_SUBVOLUME_NEW_QUOTA = 'Q', | |
ee17ee7c | 89 | CREATE_FIFO = 'p', |
468d726b LP |
90 | CREATE_SYMLINK = 'L', |
91 | CREATE_CHAR_DEVICE = 'c', | |
92 | CREATE_BLOCK_DEVICE = 'b', | |
849958d1 | 93 | COPY_FILES = 'C', |
b8bb3e8f LP |
94 | |
95 | /* These ones take globs */ | |
17493fa5 | 96 | WRITE_FILE = 'w', |
df8dee85 | 97 | EMPTY_DIRECTORY = 'e', |
b705ab6a ZJS |
98 | SET_XATTR = 't', |
99 | RECURSIVE_SET_XATTR = 'T', | |
100 | SET_ACL = 'a', | |
101 | RECURSIVE_SET_ACL = 'A', | |
17493fa5 LP |
102 | SET_ATTRIBUTE = 'h', |
103 | RECURSIVE_SET_ATTRIBUTE = 'H', | |
3b63d2d3 | 104 | IGNORE_PATH = 'x', |
78a92a5a | 105 | IGNORE_DIRECTORY_PATH = 'X', |
3b63d2d3 | 106 | REMOVE_PATH = 'r', |
a8d88783 | 107 | RECURSIVE_REMOVE_PATH = 'R', |
777b87e7 | 108 | RELABEL_PATH = 'z', |
e73a03e0 | 109 | RECURSIVE_RELABEL_PATH = 'Z', |
17493fa5 | 110 | ADJUST_MODE = 'm', /* legacy, 'z' is identical to this */ |
66ccd038 | 111 | } ItemType; |
3b63d2d3 LP |
112 | |
113 | typedef struct Item { | |
66ccd038 | 114 | ItemType type; |
3b63d2d3 LP |
115 | |
116 | char *path; | |
468d726b | 117 | char *argument; |
ebf4e801 | 118 | char **xattrs; |
349cc4a5 | 119 | #if HAVE_ACL |
f8eeeaf9 ZJS |
120 | acl_t acl_access; |
121 | acl_t acl_default; | |
122 | #endif | |
5008d581 LP |
123 | uid_t uid; |
124 | gid_t gid; | |
3b63d2d3 LP |
125 | mode_t mode; |
126 | usec_t age; | |
127 | ||
468d726b | 128 | dev_t major_minor; |
88ec4dfa LP |
129 | unsigned attribute_value; |
130 | unsigned attribute_mask; | |
468d726b | 131 | |
3b63d2d3 LP |
132 | bool uid_set:1; |
133 | bool gid_set:1; | |
134 | bool mode_set:1; | |
135 | bool age_set:1; | |
abef3f91 | 136 | bool mask_perms:1; |
88ec4dfa | 137 | bool attribute_set:1; |
24f3a374 LP |
138 | |
139 | bool keep_first_level:1; | |
1910cd0e | 140 | |
c55ac248 | 141 | bool append_or_force:1; |
2e78fa79 | 142 | |
6d7b5433 WD |
143 | bool allow_failure:1; |
144 | ||
811a1587 | 145 | OperationMask done; |
3b63d2d3 LP |
146 | } Item; |
147 | ||
3f93da98 ZJS |
148 | typedef struct ItemArray { |
149 | Item *items; | |
96d10d78 | 150 | size_t n_items; |
811a1587 LP |
151 | |
152 | struct ItemArray *parent; | |
153 | Set *children; | |
3f93da98 ZJS |
154 | } ItemArray; |
155 | ||
5a8575ef | 156 | typedef enum DirectoryType { |
133bbca4 | 157 | DIRECTORY_RUNTIME, |
5a8575ef ZJS |
158 | DIRECTORY_STATE, |
159 | DIRECTORY_CACHE, | |
160 | DIRECTORY_LOGS, | |
161 | _DIRECTORY_TYPE_MAX, | |
162 | } DirectoryType; | |
163 | ||
ceaaeb9b | 164 | static bool arg_cat_config = false; |
f2b5ca0e | 165 | static bool arg_user = false; |
1a967b6b | 166 | static OperationMask arg_operation = 0; |
81815651 | 167 | static bool arg_boot = false; |
0221d68a | 168 | static PagerFlags arg_pager_flags = 0; |
3b63d2d3 | 169 | |
7bc040fa LP |
170 | static char **arg_include_prefixes = NULL; |
171 | static char **arg_exclude_prefixes = NULL; | |
cf9a4abd | 172 | static char *arg_root = NULL; |
63d3d0a5 | 173 | static char *arg_image = NULL; |
a6d8474f | 174 | static char *arg_replace = NULL; |
fba6e687 | 175 | |
3b63d2d3 LP |
176 | #define MAX_DEPTH 256 |
177 | ||
ef43a391 | 178 | static OrderedHashmap *items = NULL, *globs = NULL; |
7bc040fa LP |
179 | static Set *unix_sockets = NULL; |
180 | ||
87938c3b YW |
181 | STATIC_DESTRUCTOR_REGISTER(items, ordered_hashmap_freep); |
182 | STATIC_DESTRUCTOR_REGISTER(globs, ordered_hashmap_freep); | |
183 | STATIC_DESTRUCTOR_REGISTER(unix_sockets, set_free_freep); | |
184 | STATIC_DESTRUCTOR_REGISTER(arg_include_prefixes, freep); | |
185 | STATIC_DESTRUCTOR_REGISTER(arg_exclude_prefixes, freep); | |
186 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); | |
63d3d0a5 | 187 | STATIC_DESTRUCTOR_REGISTER(arg_image, freep); |
87938c3b | 188 | |
303ee601 ZJS |
189 | static int specifier_machine_id_safe(char specifier, const void *data, const void *userdata, char **ret); |
190 | static int specifier_directory(char specifier, const void *data, const void *userdata, char **ret); | |
4cef1923 | 191 | |
bd550f78 | 192 | static const Specifier specifier_table[] = { |
e93387f3 | 193 | { 'a', specifier_architecture, NULL }, |
5a8575ef | 194 | { 'b', specifier_boot_id, NULL }, |
e93387f3 | 195 | { 'B', specifier_os_build_id, NULL }, |
5a8575ef | 196 | { 'H', specifier_host_name, NULL }, |
e97708fa | 197 | { 'l', specifier_short_host_name, NULL }, |
e93387f3 | 198 | { 'm', specifier_machine_id_safe, NULL }, |
268f5a54 | 199 | { 'o', specifier_os_id, NULL }, |
e93387f3 | 200 | { 'v', specifier_kernel_release, NULL }, |
268f5a54 | 201 | { 'w', specifier_os_version_id, NULL }, |
268f5a54 | 202 | { 'W', specifier_os_variant_id, NULL }, |
5a8575ef | 203 | |
5a8575ef | 204 | { 'h', specifier_user_home, NULL }, |
b294e594 | 205 | |
5a8575ef ZJS |
206 | { 'C', specifier_directory, UINT_TO_PTR(DIRECTORY_CACHE) }, |
207 | { 'L', specifier_directory, UINT_TO_PTR(DIRECTORY_LOGS) }, | |
e93387f3 YW |
208 | { 'S', specifier_directory, UINT_TO_PTR(DIRECTORY_STATE) }, |
209 | { 't', specifier_directory, UINT_TO_PTR(DIRECTORY_RUNTIME) }, | |
210 | ||
211 | COMMON_CREDS_SPECIFIERS, | |
212 | ||
2824aa07 | 213 | COMMON_TMP_SPECIFIERS, |
bd550f78 LP |
214 | {} |
215 | }; | |
216 | ||
303ee601 | 217 | static int specifier_machine_id_safe(char specifier, const void *data, const void *userdata, char **ret) { |
4cef1923 FB |
218 | int r; |
219 | ||
d8dab757 FB |
220 | /* If /etc/machine_id is missing or empty (e.g. in a chroot environment) |
221 | * return a recognizable error so that the caller can skip the rule | |
4cef1923 FB |
222 | * gracefully. */ |
223 | ||
224 | r = specifier_machine_id(specifier, data, userdata, ret); | |
d8dab757 | 225 | if (IN_SET(r, -ENOENT, -ENOMEDIUM)) |
5a8575ef | 226 | return -ENXIO; |
4cef1923 FB |
227 | |
228 | return r; | |
229 | } | |
230 | ||
303ee601 | 231 | static int specifier_directory(char specifier, const void *data, const void *userdata, char **ret) { |
5a8575ef ZJS |
232 | struct table_entry { |
233 | uint64_t type; | |
234 | const char *suffix; | |
235 | }; | |
236 | ||
237 | static const struct table_entry paths_system[] = { | |
238 | [DIRECTORY_RUNTIME] = { SD_PATH_SYSTEM_RUNTIME }, | |
239 | [DIRECTORY_STATE] = { SD_PATH_SYSTEM_STATE_PRIVATE }, | |
240 | [DIRECTORY_CACHE] = { SD_PATH_SYSTEM_STATE_CACHE }, | |
241 | [DIRECTORY_LOGS] = { SD_PATH_SYSTEM_STATE_LOGS }, | |
242 | }; | |
243 | ||
244 | static const struct table_entry paths_user[] = { | |
245 | [DIRECTORY_RUNTIME] = { SD_PATH_USER_RUNTIME }, | |
246 | [DIRECTORY_STATE] = { SD_PATH_USER_CONFIGURATION }, | |
247 | [DIRECTORY_CACHE] = { SD_PATH_USER_STATE_CACHE }, | |
248 | [DIRECTORY_LOGS] = { SD_PATH_USER_CONFIGURATION, "log" }, | |
249 | }; | |
250 | ||
251 | unsigned i; | |
252 | const struct table_entry *paths; | |
253 | ||
254 | assert_cc(ELEMENTSOF(paths_system) == ELEMENTSOF(paths_user)); | |
255 | paths = arg_user ? paths_user : paths_system; | |
256 | ||
257 | i = PTR_TO_UINT(data); | |
258 | assert(i < ELEMENTSOF(paths_system)); | |
259 | ||
51327bcc | 260 | return sd_path_lookup(paths[i].type, paths[i].suffix, ret); |
5a8575ef ZJS |
261 | } |
262 | ||
4cef1923 FB |
263 | static int log_unresolvable_specifier(const char *filename, unsigned line) { |
264 | static bool notified = false; | |
265 | ||
5a8575ef ZJS |
266 | /* In system mode, this is called when /etc is not fully initialized (e.g. |
267 | * in a chroot environment) where some specifiers are unresolvable. In user | |
268 | * mode, this is called when some variables are not defined. These cases are | |
269 | * not considered as an error so log at LOG_NOTICE only for the first time | |
270 | * and then downgrade this to LOG_DEBUG for the rest. */ | |
4cef1923 | 271 | |
d02933fd LP |
272 | log_syntax(NULL, |
273 | notified ? LOG_DEBUG : LOG_NOTICE, | |
274 | filename, line, 0, | |
275 | "Failed to resolve specifier: %s, skipping", | |
276 | arg_user ? "Required $XDG_... variable not defined" : "uninitialized /etc detected"); | |
4cef1923 FB |
277 | |
278 | if (!notified) | |
279 | log_notice("All rules containing unresolvable specifiers will be skipped."); | |
280 | ||
281 | notified = true; | |
282 | return 0; | |
283 | } | |
284 | ||
f2b5ca0e ZJS |
285 | static int user_config_paths(char*** ret) { |
286 | _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL; | |
287 | _cleanup_free_ char *persistent_config = NULL, *runtime_config = NULL, *data_home = NULL; | |
288 | _cleanup_strv_free_ char **res = NULL; | |
289 | int r; | |
290 | ||
291 | r = xdg_user_dirs(&config_dirs, &data_dirs); | |
292 | if (r < 0) | |
293 | return r; | |
294 | ||
295 | r = xdg_user_config_dir(&persistent_config, "/user-tmpfiles.d"); | |
296 | if (r < 0 && r != -ENXIO) | |
297 | return r; | |
298 | ||
299 | r = xdg_user_runtime_dir(&runtime_config, "/user-tmpfiles.d"); | |
300 | if (r < 0 && r != -ENXIO) | |
301 | return r; | |
302 | ||
303 | r = xdg_user_data_dir(&data_home, "/user-tmpfiles.d"); | |
304 | if (r < 0 && r != -ENXIO) | |
305 | return r; | |
306 | ||
307 | r = strv_extend_strv_concat(&res, config_dirs, "/user-tmpfiles.d"); | |
308 | if (r < 0) | |
309 | return r; | |
310 | ||
311 | r = strv_extend(&res, persistent_config); | |
312 | if (r < 0) | |
313 | return r; | |
314 | ||
315 | r = strv_extend(&res, runtime_config); | |
316 | if (r < 0) | |
317 | return r; | |
318 | ||
319 | r = strv_extend(&res, data_home); | |
320 | if (r < 0) | |
321 | return r; | |
322 | ||
323 | r = strv_extend_strv_concat(&res, data_dirs, "/user-tmpfiles.d"); | |
324 | if (r < 0) | |
325 | return r; | |
326 | ||
327 | r = path_strv_make_absolute_cwd(res); | |
328 | if (r < 0) | |
329 | return r; | |
330 | ||
ae2a15bc | 331 | *ret = TAKE_PTR(res); |
f2b5ca0e ZJS |
332 | return 0; |
333 | } | |
334 | ||
66ccd038 | 335 | static bool needs_glob(ItemType t) { |
cde684a2 LP |
336 | return IN_SET(t, |
337 | WRITE_FILE, | |
338 | IGNORE_PATH, | |
339 | IGNORE_DIRECTORY_PATH, | |
340 | REMOVE_PATH, | |
341 | RECURSIVE_REMOVE_PATH, | |
df8dee85 | 342 | EMPTY_DIRECTORY, |
e73a03e0 | 343 | ADJUST_MODE, |
cde684a2 | 344 | RELABEL_PATH, |
b705ab6a ZJS |
345 | RECURSIVE_RELABEL_PATH, |
346 | SET_XATTR, | |
347 | RECURSIVE_SET_XATTR, | |
348 | SET_ACL, | |
34f64536 LP |
349 | RECURSIVE_SET_ACL, |
350 | SET_ATTRIBUTE, | |
351 | RECURSIVE_SET_ATTRIBUTE); | |
b8bb3e8f LP |
352 | } |
353 | ||
3f93da98 ZJS |
354 | static bool takes_ownership(ItemType t) { |
355 | return IN_SET(t, | |
356 | CREATE_FILE, | |
357 | TRUNCATE_FILE, | |
358 | CREATE_DIRECTORY, | |
df8dee85 | 359 | EMPTY_DIRECTORY, |
3f93da98 ZJS |
360 | TRUNCATE_DIRECTORY, |
361 | CREATE_SUBVOLUME, | |
5fb13eb5 LP |
362 | CREATE_SUBVOLUME_INHERIT_QUOTA, |
363 | CREATE_SUBVOLUME_NEW_QUOTA, | |
3f93da98 ZJS |
364 | CREATE_FIFO, |
365 | CREATE_SYMLINK, | |
366 | CREATE_CHAR_DEVICE, | |
367 | CREATE_BLOCK_DEVICE, | |
368 | COPY_FILES, | |
3f93da98 ZJS |
369 | WRITE_FILE, |
370 | IGNORE_PATH, | |
371 | IGNORE_DIRECTORY_PATH, | |
372 | REMOVE_PATH, | |
373 | RECURSIVE_REMOVE_PATH); | |
374 | } | |
375 | ||
ef43a391 | 376 | static struct Item* find_glob(OrderedHashmap *h, const char *match) { |
3f93da98 | 377 | ItemArray *j; |
b8bb3e8f | 378 | |
90e74a66 | 379 | ORDERED_HASHMAP_FOREACH(j, h) { |
96d10d78 | 380 | size_t n; |
3f93da98 | 381 | |
96d10d78 | 382 | for (n = 0; n < j->n_items; n++) { |
3f93da98 ZJS |
383 | Item *item = j->items + n; |
384 | ||
385 | if (fnmatch(item->path, match, FNM_PATHNAME|FNM_PERIOD) == 0) | |
386 | return item; | |
387 | } | |
388 | } | |
b8bb3e8f LP |
389 | |
390 | return NULL; | |
391 | } | |
392 | ||
71a0be76 YW |
393 | static int load_unix_sockets(void) { |
394 | _cleanup_set_free_free_ Set *sockets = NULL; | |
7fd1b19b | 395 | _cleanup_fclose_ FILE *f = NULL; |
f1ff734f | 396 | int r; |
17b90525 LP |
397 | |
398 | if (unix_sockets) | |
71a0be76 | 399 | return 0; |
17b90525 | 400 | |
f1ff734f | 401 | /* We maintain a cache of the sockets we found in /proc/net/unix to speed things up a little. */ |
17b90525 | 402 | |
71a0be76 YW |
403 | sockets = set_new(&path_hash_ops); |
404 | if (!sockets) | |
405 | return log_oom(); | |
17b90525 | 406 | |
fdcad0c2 | 407 | f = fopen("/proc/net/unix", "re"); |
71a0be76 YW |
408 | if (!f) |
409 | return log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_WARNING, errno, | |
410 | "Failed to open /proc/net/unix, ignoring: %m"); | |
17b90525 | 411 | |
fdcad0c2 | 412 | /* Skip header */ |
f1ff734f | 413 | r = read_line(f, LONG_LINE_MAX, NULL); |
71a0be76 YW |
414 | if (r < 0) |
415 | return log_warning_errno(r, "Failed to skip /proc/net/unix header line: %m"); | |
416 | if (r == 0) | |
417 | return log_warning_errno(SYNTHETIC_ERRNO(EIO), "Premature end of file reading /proc/net/unix."); | |
17b90525 LP |
418 | |
419 | for (;;) { | |
71a0be76 YW |
420 | _cleanup_free_ char *line = NULL, *s = NULL; |
421 | char *p; | |
17b90525 | 422 | |
f1ff734f | 423 | r = read_line(f, LONG_LINE_MAX, &line); |
71a0be76 YW |
424 | if (r < 0) |
425 | return log_warning_errno(r, "Failed to read /proc/net/unix line, ignoring: %m"); | |
f1ff734f | 426 | if (r == 0) /* EOF */ |
17b90525 LP |
427 | break; |
428 | ||
fdcad0c2 LP |
429 | p = strchr(line, ':'); |
430 | if (!p) | |
431 | continue; | |
432 | ||
433 | if (strlen(p) < 37) | |
17b90525 LP |
434 | continue; |
435 | ||
fdcad0c2 | 436 | p += 37; |
17b90525 | 437 | p += strspn(p, WHITESPACE); |
fdcad0c2 | 438 | p += strcspn(p, WHITESPACE); /* skip one more word */ |
17b90525 LP |
439 | p += strspn(p, WHITESPACE); |
440 | ||
441 | if (*p != '/') | |
442 | continue; | |
443 | ||
fdcad0c2 | 444 | s = strdup(p); |
71a0be76 YW |
445 | if (!s) |
446 | return log_oom(); | |
17b90525 | 447 | |
858d36c1 | 448 | path_simplify(s, false); |
4ff21d85 | 449 | |
71a0be76 YW |
450 | r = set_consume(sockets, s); |
451 | if (r == -EEXIST) | |
452 | continue; | |
453 | if (r < 0) | |
454 | return log_warning_errno(r, "Failed to add AF_UNIX socket to set, ignoring: %m"); | |
17b90525 | 455 | |
71a0be76 YW |
456 | TAKE_PTR(s); |
457 | } | |
17b90525 | 458 | |
71a0be76 YW |
459 | unix_sockets = TAKE_PTR(sockets); |
460 | return 1; | |
17b90525 LP |
461 | } |
462 | ||
463 | static bool unix_socket_alive(const char *fn) { | |
464 | assert(fn); | |
465 | ||
71a0be76 YW |
466 | if (load_unix_sockets() < 0) |
467 | return true; /* We don't know, so assume yes */ | |
17b90525 | 468 | |
71a0be76 | 469 | return !!set_get(unix_sockets, (char*) fn); |
17b90525 LP |
470 | } |
471 | ||
df99a9ef ZJS |
472 | static DIR* xopendirat_nomod(int dirfd, const char *path) { |
473 | DIR *dir; | |
474 | ||
475 | dir = xopendirat(dirfd, path, O_NOFOLLOW|O_NOATIME); | |
1532227a LP |
476 | if (dir) |
477 | return dir; | |
478 | ||
479 | log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); | |
480 | if (errno != EPERM) | |
481 | return NULL; | |
482 | ||
483 | dir = xopendirat(dirfd, path, O_NOFOLLOW); | |
484 | if (!dir) | |
485 | log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); | |
df99a9ef ZJS |
486 | |
487 | return dir; | |
488 | } | |
489 | ||
490 | static DIR* opendir_nomod(const char *path) { | |
491 | return xopendirat_nomod(AT_FDCWD, path); | |
492 | } | |
493 | ||
ddb439b8 LP |
494 | static inline nsec_t load_statx_timestamp_nsec(const struct statx_timestamp *ts) { |
495 | assert(ts); | |
496 | ||
497 | if (ts->tv_sec < 0) | |
498 | return NSEC_INFINITY; | |
499 | ||
500 | if ((nsec_t) ts->tv_sec >= (UINT64_MAX - ts->tv_nsec) / NSEC_PER_SEC) | |
501 | return NSEC_INFINITY; | |
502 | ||
503 | return ts->tv_sec * NSEC_PER_SEC + ts->tv_nsec; | |
504 | } | |
505 | ||
3b63d2d3 | 506 | static int dir_cleanup( |
78a92a5a | 507 | Item *i, |
3b63d2d3 LP |
508 | const char *p, |
509 | DIR *d, | |
ddb439b8 LP |
510 | nsec_t self_atime_nsec, |
511 | nsec_t self_mtime_nsec, | |
512 | nsec_t cutoff_nsec, | |
513 | dev_t rootdev_major, | |
514 | dev_t rootdev_minor, | |
3b63d2d3 | 515 | bool mountpoint, |
24f3a374 | 516 | int maxdepth, |
265ffa1e LP |
517 | bool keep_this_level) { |
518 | ||
3b63d2d3 | 519 | bool deleted = false; |
ddb439b8 | 520 | struct dirent *dent; |
3b63d2d3 LP |
521 | int r = 0; |
522 | ||
8fb3f009 | 523 | FOREACH_DIRENT_ALL(dent, d, break) { |
7fd1b19b | 524 | _cleanup_free_ char *sub_path = NULL; |
ddb439b8 | 525 | nsec_t atime_nsec, mtime_nsec, ctime_nsec, btime_nsec; |
3b63d2d3 | 526 | |
49bfc877 | 527 | if (dot_or_dot_dot(dent->d_name)) |
3b63d2d3 | 528 | continue; |
5008d581 | 529 | |
ca194a2a | 530 | /* If statx() is supported, use it. It's preferable over fstatat() since it tells us |
69e3234d | 531 | * explicitly where we are looking at a mount point, for free as side information. Determining |
ca194a2a LP |
532 | * the same information without statx() is hard, see the complexity of path_is_mount_point(), |
533 | * and also much slower as it requires a number of syscalls instead of just one. Hence, when | |
534 | * we have modern statx() we use it instead of fstat() and do proper mount point checks, | |
535 | * while on older kernels's well do traditional st_dev based detection of mount points. | |
536 | * | |
537 | * Using statx() for detecting mount points also has the benfit that we handle weird file | |
538 | * systems such as overlayfs better where each file is originating from a different | |
539 | * st_dev. */ | |
540 | ||
541 | STRUCT_STATX_DEFINE(sx); | |
542 | ||
543 | r = statx_fallback( | |
544 | dirfd(d), dent->d_name, | |
545 | AT_SYMLINK_NOFOLLOW|AT_NO_AUTOMOUNT, | |
546 | STATX_TYPE|STATX_MODE|STATX_UID|STATX_ATIME|STATX_MTIME|STATX_CTIME|STATX_BTIME, | |
547 | &sx); | |
548 | if (r == -ENOENT) | |
549 | continue; | |
550 | if (r < 0) { | |
551 | /* FUSE, NFS mounts, SELinux might return EACCES */ | |
552 | r = log_full_errno(errno == EACCES ? LOG_DEBUG : LOG_ERR, errno, | |
553 | "statx(%s/%s) failed: %m", p, dent->d_name); | |
554 | continue; | |
3b63d2d3 LP |
555 | } |
556 | ||
ca194a2a LP |
557 | if (FLAGS_SET(sx.stx_attributes_mask, STATX_ATTR_MOUNT_ROOT)) { |
558 | /* Yay, we have the mount point API, use it */ | |
559 | if (FLAGS_SET(sx.stx_attributes, STATX_ATTR_MOUNT_ROOT)) { | |
560 | log_debug("Ignoring \"%s/%s\": different mount points.", p, dent->d_name); | |
ddb439b8 LP |
561 | continue; |
562 | } | |
ca194a2a LP |
563 | } else { |
564 | /* So we might have statx() but the STATX_ATTR_MOUNT_ROOT flag is not supported, fall | |
565 | * back to traditional stx_dev checking. */ | |
566 | if (sx.stx_dev_major != rootdev_major || | |
567 | sx.stx_dev_minor != rootdev_minor) { | |
ddb439b8 LP |
568 | log_debug("Ignoring \"%s/%s\": different filesystem.", p, dent->d_name); |
569 | continue; | |
570 | } | |
571 | ||
ca194a2a LP |
572 | /* Try to detect bind mounts of the same filesystem instance; they do not differ in device |
573 | * major/minors. This type of query is not supported on all kernels or filesystem types | |
574 | * though. */ | |
575 | if (S_ISDIR(sx.stx_mode)) { | |
576 | int q; | |
3b63d2d3 | 577 | |
ca194a2a LP |
578 | q = fd_is_mount_point(dirfd(d), dent->d_name, 0); |
579 | if (q < 0) | |
580 | log_debug_errno(q, "Failed to determine whether \"%s/%s\" is a mount point, ignoring: %m", p, dent->d_name); | |
581 | else if (q > 0) { | |
582 | log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.", p, dent->d_name); | |
583 | continue; | |
584 | } | |
60bdc0ca | 585 | } |
582deb84 | 586 | } |
99d680ac | 587 | |
ca194a2a LP |
588 | atime_nsec = FLAGS_SET(sx.stx_mask, STATX_ATIME) ? load_statx_timestamp_nsec(&sx.stx_atime) : 0; |
589 | mtime_nsec = FLAGS_SET(sx.stx_mask, STATX_MTIME) ? load_statx_timestamp_nsec(&sx.stx_mtime) : 0; | |
590 | ctime_nsec = FLAGS_SET(sx.stx_mask, STATX_CTIME) ? load_statx_timestamp_nsec(&sx.stx_ctime) : 0; | |
591 | btime_nsec = FLAGS_SET(sx.stx_mask, STATX_BTIME) ? load_statx_timestamp_nsec(&sx.stx_btime) : 0; | |
592 | ||
113ed3be | 593 | sub_path = path_join(p, dent->d_name); |
cde684a2 | 594 | if (!sub_path) { |
0d0f0c50 | 595 | r = log_oom(); |
3b63d2d3 LP |
596 | goto finish; |
597 | } | |
598 | ||
599 | /* Is there an item configured for this path? */ | |
ef43a391 | 600 | if (ordered_hashmap_get(items, sub_path)) { |
582deb84 | 601 | log_debug("Ignoring \"%s\": a separate entry exists.", sub_path); |
3b63d2d3 | 602 | continue; |
582deb84 | 603 | } |
3b63d2d3 | 604 | |
582deb84 ZJS |
605 | if (find_glob(globs, sub_path)) { |
606 | log_debug("Ignoring \"%s\": a separate glob exists.", sub_path); | |
b8bb3e8f | 607 | continue; |
582deb84 | 608 | } |
b8bb3e8f | 609 | |
ca194a2a | 610 | if (S_ISDIR(sx.stx_mode)) { |
52b32b2a | 611 | _cleanup_closedir_ DIR *sub_dir = NULL; |
3b63d2d3 LP |
612 | |
613 | if (mountpoint && | |
614 | streq(dent->d_name, "lost+found") && | |
ca194a2a | 615 | sx.stx_uid == 0) { |
781bc44e | 616 | log_debug("Ignoring directory \"%s\".", sub_path); |
3b63d2d3 | 617 | continue; |
582deb84 | 618 | } |
3b63d2d3 LP |
619 | |
620 | if (maxdepth <= 0) | |
582deb84 | 621 | log_warning("Reached max depth on \"%s\".", sub_path); |
3b63d2d3 | 622 | else { |
3b63d2d3 LP |
623 | int q; |
624 | ||
df99a9ef | 625 | sub_dir = xopendirat_nomod(dirfd(d), dent->d_name); |
cde684a2 | 626 | if (!sub_dir) { |
582deb84 | 627 | if (errno != ENOENT) |
781bc44e | 628 | r = log_warning_errno(errno, "Opening directory \"%s\" failed, ignoring: %m", sub_path); |
3b63d2d3 LP |
629 | |
630 | continue; | |
631 | } | |
632 | ||
52b32b2a LP |
633 | if (flock(dirfd(sub_dir), LOCK_EX|LOCK_NB) < 0) { |
634 | log_debug_errno(errno, "Couldn't acquire shared BSD lock on directory \"%s\", skipping: %m", p); | |
635 | continue; | |
636 | } | |
637 | ||
ddb439b8 LP |
638 | q = dir_cleanup(i, |
639 | sub_path, sub_dir, | |
640 | atime_nsec, mtime_nsec, cutoff_nsec, | |
641 | rootdev_major, rootdev_minor, | |
642 | false, maxdepth-1, false); | |
3b63d2d3 LP |
643 | if (q < 0) |
644 | r = q; | |
645 | } | |
646 | ||
a23fabc6 LP |
647 | /* Note: if you are wondering why we don't support the sticky bit for excluding |
648 | * directories from cleaning like we do it for other file system objects: well, the | |
649 | * sticky bit already has a meaning for directories, so we don't want to overload | |
650 | * that. */ | |
24f3a374 | 651 | |
582deb84 | 652 | if (keep_this_level) { |
781bc44e | 653 | log_debug("Keeping directory \"%s\".", sub_path); |
24f3a374 | 654 | continue; |
582deb84 | 655 | } |
24f3a374 | 656 | |
3b63d2d3 | 657 | /* Ignore ctime, we change it when deleting */ |
ddb439b8 | 658 | if (mtime_nsec != NSEC_INFINITY && mtime_nsec >= cutoff_nsec) { |
582deb84 ZJS |
659 | char a[FORMAT_TIMESTAMP_MAX]; |
660 | /* Follows spelling in stat(1). */ | |
661 | log_debug("Directory \"%s\": modify time %s is too new.", | |
662 | sub_path, | |
ddb439b8 | 663 | format_timestamp_style(a, sizeof(a), mtime_nsec / NSEC_PER_USEC, TIMESTAMP_US)); |
3b63d2d3 | 664 | continue; |
582deb84 ZJS |
665 | } |
666 | ||
ddb439b8 | 667 | if (atime_nsec != NSEC_INFINITY && atime_nsec >= cutoff_nsec) { |
582deb84 ZJS |
668 | char a[FORMAT_TIMESTAMP_MAX]; |
669 | log_debug("Directory \"%s\": access time %s is too new.", | |
670 | sub_path, | |
ddb439b8 LP |
671 | format_timestamp_style(a, sizeof(a), atime_nsec / NSEC_PER_USEC, TIMESTAMP_US)); |
672 | continue; | |
673 | } | |
674 | ||
675 | if (btime_nsec != NSEC_INFINITY && btime_nsec >= cutoff_nsec) { | |
676 | char a[FORMAT_TIMESTAMP_MAX]; | |
677 | log_debug("Directory \"%s\": birth time %s is too new.", | |
678 | sub_path, | |
679 | format_timestamp_style(a, sizeof(a), btime_nsec / NSEC_PER_USEC, TIMESTAMP_US)); | |
582deb84 ZJS |
680 | continue; |
681 | } | |
3b63d2d3 | 682 | |
61253220 ZJS |
683 | log_debug("Removing directory \"%s\".", sub_path); |
684 | if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) | |
920ce828 | 685 | if (!IN_SET(errno, ENOENT, ENOTEMPTY)) |
781bc44e | 686 | r = log_warning_errno(errno, "Failed to remove directory \"%s\", ignoring: %m", sub_path); |
3b63d2d3 LP |
687 | |
688 | } else { | |
a23fabc6 LP |
689 | /* Skip files for which the sticky bit is set. These are semantics we define, and are |
690 | * unknown elsewhere. See XDG_RUNTIME_DIR specification for details. */ | |
ca194a2a | 691 | if (sx.stx_mode & S_ISVTX) { |
582deb84 | 692 | log_debug("Skipping \"%s\": sticky bit set.", sub_path); |
9c73736d | 693 | continue; |
582deb84 | 694 | } |
9c73736d | 695 | |
20b6bb95 | 696 | if (mountpoint && |
ca194a2a LP |
697 | S_ISREG(sx.stx_mode) && |
698 | sx.stx_uid == 0 && | |
20b6bb95 LP |
699 | STR_IN_SET(dent->d_name, |
700 | ".journal", | |
701 | "aquota.user", | |
702 | "aquota.group")) { | |
703 | log_debug("Skipping \"%s\".", sub_path); | |
704 | continue; | |
705 | } | |
3b63d2d3 | 706 | |
17b90525 | 707 | /* Ignore sockets that are listed in /proc/net/unix */ |
ca194a2a | 708 | if (S_ISSOCK(sx.stx_mode) && unix_socket_alive(sub_path)) { |
582deb84 | 709 | log_debug("Skipping \"%s\": live socket.", sub_path); |
17b90525 | 710 | continue; |
582deb84 | 711 | } |
17b90525 | 712 | |
78ab08eb | 713 | /* Ignore device nodes */ |
ca194a2a | 714 | if (S_ISCHR(sx.stx_mode) || S_ISBLK(sx.stx_mode)) { |
582deb84 | 715 | log_debug("Skipping \"%s\": a device.", sub_path); |
78ab08eb | 716 | continue; |
582deb84 | 717 | } |
78ab08eb | 718 | |
a23fabc6 | 719 | /* Keep files on this level around if this is requested */ |
582deb84 ZJS |
720 | if (keep_this_level) { |
721 | log_debug("Keeping \"%s\".", sub_path); | |
24f3a374 | 722 | continue; |
582deb84 | 723 | } |
24f3a374 | 724 | |
ddb439b8 | 725 | if (mtime_nsec != NSEC_INFINITY && mtime_nsec >= cutoff_nsec) { |
582deb84 ZJS |
726 | char a[FORMAT_TIMESTAMP_MAX]; |
727 | /* Follows spelling in stat(1). */ | |
728 | log_debug("File \"%s\": modify time %s is too new.", | |
729 | sub_path, | |
ddb439b8 | 730 | format_timestamp_style(a, sizeof(a), mtime_nsec / NSEC_PER_USEC, TIMESTAMP_US)); |
3b63d2d3 | 731 | continue; |
582deb84 | 732 | } |
3b63d2d3 | 733 | |
ddb439b8 | 734 | if (atime_nsec != NSEC_INFINITY && atime_nsec >= cutoff_nsec) { |
582deb84 ZJS |
735 | char a[FORMAT_TIMESTAMP_MAX]; |
736 | log_debug("File \"%s\": access time %s is too new.", | |
737 | sub_path, | |
ddb439b8 | 738 | format_timestamp_style(a, sizeof(a), atime_nsec / NSEC_PER_USEC, TIMESTAMP_US)); |
582deb84 ZJS |
739 | continue; |
740 | } | |
3b63d2d3 | 741 | |
ddb439b8 | 742 | if (ctime_nsec != NSEC_INFINITY && ctime_nsec >= cutoff_nsec) { |
582deb84 ZJS |
743 | char a[FORMAT_TIMESTAMP_MAX]; |
744 | log_debug("File \"%s\": change time %s is too new.", | |
745 | sub_path, | |
ddb439b8 LP |
746 | format_timestamp_style(a, sizeof(a), ctime_nsec / NSEC_PER_USEC, TIMESTAMP_US)); |
747 | continue; | |
748 | } | |
749 | ||
750 | if (btime_nsec != NSEC_INFINITY && btime_nsec >= cutoff_nsec) { | |
751 | char a[FORMAT_TIMESTAMP_MAX]; | |
752 | log_debug("File \"%s\": birth time %s is too new.", | |
753 | sub_path, | |
754 | format_timestamp_style(a, sizeof(a), btime_nsec / NSEC_PER_USEC, TIMESTAMP_US)); | |
582deb84 | 755 | continue; |
3b63d2d3 LP |
756 | } |
757 | ||
781bc44e | 758 | log_debug("Removing \"%s\".", sub_path); |
582deb84 ZJS |
759 | if (unlinkat(dirfd(d), dent->d_name, 0) < 0) |
760 | if (errno != ENOENT) | |
781bc44e | 761 | r = log_warning_errno(errno, "Failed to remove \"%s\", ignoring: %m", sub_path); |
582deb84 | 762 | |
3b63d2d3 LP |
763 | deleted = true; |
764 | } | |
765 | } | |
766 | ||
767 | finish: | |
768 | if (deleted) { | |
ddb439b8 LP |
769 | char a[FORMAT_TIMESTAMP_MAX], m[FORMAT_TIMESTAMP_MAX]; |
770 | struct timespec ts[2]; | |
76e15a9c | 771 | |
582deb84 ZJS |
772 | log_debug("Restoring access and modification time on \"%s\": %s, %s", |
773 | p, | |
ddb439b8 LP |
774 | format_timestamp_style(a, sizeof(a), self_atime_nsec / NSEC_PER_USEC, TIMESTAMP_US), |
775 | format_timestamp_style(m, sizeof(m), self_mtime_nsec / NSEC_PER_USEC, TIMESTAMP_US)); | |
776 | ||
777 | timespec_store_nsec(ts + 0, self_atime_nsec); | |
778 | timespec_store_nsec(ts + 1, self_mtime_nsec); | |
76e15a9c LP |
779 | |
780 | /* Restore original directory timestamps */ | |
ddb439b8 | 781 | if (futimens(dirfd(d), ts) < 0) |
76e15a9c | 782 | log_warning_errno(errno, "Failed to revert timestamps of '%s', ignoring: %m", p); |
3b63d2d3 LP |
783 | } |
784 | ||
3b63d2d3 LP |
785 | return r; |
786 | } | |
787 | ||
5579f856 LP |
788 | static bool dangerous_hardlinks(void) { |
789 | _cleanup_free_ char *value = NULL; | |
790 | static int cached = -1; | |
791 | int r; | |
792 | ||
793 | /* Check whether the fs.protected_hardlinks sysctl is on. If we can't determine it we assume its off, as that's | |
794 | * what the upstream default is. */ | |
795 | ||
796 | if (cached >= 0) | |
797 | return cached; | |
798 | ||
799 | r = read_one_line_file("/proc/sys/fs/protected_hardlinks", &value); | |
800 | if (r < 0) { | |
801 | log_debug_errno(r, "Failed to read fs.protected_hardlinks sysctl: %m"); | |
802 | return true; | |
803 | } | |
804 | ||
805 | r = parse_boolean(value); | |
806 | if (r < 0) { | |
807 | log_debug_errno(r, "Failed to parse fs.protected_hardlinks sysctl: %m"); | |
808 | return true; | |
809 | } | |
810 | ||
811 | cached = r == 0; | |
812 | return cached; | |
813 | } | |
814 | ||
774f79b5 | 815 | static bool hardlink_vulnerable(const struct stat *st) { |
5579f856 LP |
816 | assert(st); |
817 | ||
818 | return !S_ISDIR(st->st_mode) && st->st_nlink > 1 && dangerous_hardlinks(); | |
819 | } | |
820 | ||
8b364a38 LP |
821 | static mode_t process_mask_perms(mode_t mode, mode_t current) { |
822 | ||
823 | if ((current & 0111) == 0) | |
824 | mode &= ~0111; | |
825 | if ((current & 0222) == 0) | |
826 | mode &= ~0222; | |
827 | if ((current & 0444) == 0) | |
828 | mode &= ~0444; | |
829 | if (!S_ISDIR(current)) | |
830 | mode &= ~07000; /* remove sticky/sgid/suid bit, unless directory */ | |
831 | ||
832 | return mode; | |
833 | } | |
834 | ||
9d874aec | 835 | static int fd_set_perms(Item *i, int fd, const char *path, const struct stat *st) { |
b206ac8e | 836 | struct stat stbuf; |
a9f55d0e LP |
837 | mode_t new_mode; |
838 | bool do_chown; | |
dee00c19 | 839 | int r; |
1924a97d | 840 | |
cde684a2 | 841 | assert(i); |
936f6bdb | 842 | assert(fd); |
4dc7bfdf | 843 | assert(path); |
48b8aaa8 | 844 | |
936f6bdb FB |
845 | if (!i->mode_set && !i->uid_set && !i->gid_set) |
846 | goto shortcut; | |
1924a97d | 847 | |
b206ac8e FB |
848 | if (!st) { |
849 | if (fstat(fd, &stbuf) < 0) | |
850 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
851 | st = &stbuf; | |
852 | } | |
853 | ||
baaa35ad ZJS |
854 | if (hardlink_vulnerable(st)) |
855 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
856 | "Refusing to set permissions on hardlinked file %s while the fs.protected_hardlinks sysctl is turned off.", | |
857 | path); | |
5579f856 | 858 | |
a9f55d0e LP |
859 | /* Do we need a chown()? */ |
860 | do_chown = | |
861 | (i->uid_set && i->uid != st->st_uid) || | |
862 | (i->gid_set && i->gid != st->st_gid); | |
8b364a38 | 863 | |
a9f55d0e LP |
864 | /* Calculate the mode to apply */ |
865 | new_mode = i->mode_set ? (i->mask_perms ? | |
866 | process_mask_perms(i->mode, st->st_mode) : | |
867 | i->mode) : | |
868 | (st->st_mode & 07777); | |
869 | ||
870 | if (i->mode_set && do_chown) { | |
871 | /* Before we issue the chmod() let's reduce the access mode to the common bits of the old and | |
872 | * the new mode. That way there's no time window where the file exists under the old owner | |
873 | * with more than the old access modes — and not under the new owner with more than the new | |
874 | * access modes either. */ | |
8b364a38 | 875 | |
936f6bdb | 876 | if (S_ISLNK(st->st_mode)) |
a9f55d0e | 877 | log_debug("Skipping temporary mode fix for symlink %s.", path); |
51207ca1 | 878 | else { |
a9f55d0e | 879 | mode_t m = new_mode & st->st_mode; /* Mask new mode by old mode */ |
abef3f91 | 880 | |
a9f55d0e LP |
881 | if (((m ^ st->st_mode) & 07777) == 0) |
882 | log_debug("\"%s\" matches temporary mode %o already.", path, m); | |
48b8aaa8 | 883 | else { |
a9f55d0e | 884 | log_debug("Temporarily changing \"%s\" to mode %o.", path, m); |
dee00c19 LP |
885 | r = fchmod_opath(fd, m); |
886 | if (r < 0) | |
887 | return log_error_errno(r, "fchmod() of %s failed: %m", path); | |
48b8aaa8 | 888 | } |
062e01bb | 889 | } |
51207ca1 | 890 | } |
062e01bb | 891 | |
a9f55d0e | 892 | if (do_chown) { |
51207ca1 LP |
893 | log_debug("Changing \"%s\" to owner "UID_FMT":"GID_FMT, |
894 | path, | |
895 | i->uid_set ? i->uid : UID_INVALID, | |
896 | i->gid_set ? i->gid : GID_INVALID); | |
897 | ||
936f6bdb FB |
898 | if (fchownat(fd, |
899 | "", | |
900 | i->uid_set ? i->uid : UID_INVALID, | |
901 | i->gid_set ? i->gid : GID_INVALID, | |
902 | AT_EMPTY_PATH) < 0) | |
903 | return log_error_errno(errno, "fchownat() of %s failed: %m", path); | |
582deb84 | 904 | } |
062e01bb | 905 | |
a9f55d0e LP |
906 | /* Now, apply the final mode. We do this in two cases: when the user set a mode explicitly, or after a |
907 | * chown(), since chown()'s mangle the access mode in regards to sgid/suid in some conditions. */ | |
908 | if (i->mode_set || do_chown) { | |
909 | if (S_ISLNK(st->st_mode)) | |
910 | log_debug("Skipping mode fix for symlink %s.", path); | |
911 | else { | |
912 | /* Check if the chmod() is unnecessary. Note that if we did a chown() before we always | |
913 | * chmod() here again, since it might have mangled the bits. */ | |
914 | if (!do_chown && ((new_mode ^ st->st_mode) & 07777) == 0) | |
915 | log_debug("\"%s\" matches mode %o already.", path, new_mode); | |
916 | else { | |
917 | log_debug("Changing \"%s\" to mode %o.", path, new_mode); | |
dee00c19 LP |
918 | r = fchmod_opath(fd, new_mode); |
919 | if (r < 0) | |
920 | return log_error_errno(r, "fchmod() of %s failed: %m", path); | |
a9f55d0e LP |
921 | } |
922 | } | |
923 | } | |
924 | ||
59793c8f | 925 | shortcut: |
08c84981 | 926 | return label_fix(path, 0); |
062e01bb MS |
927 | } |
928 | ||
5ec9d065 FB |
929 | static int path_open_parent_safe(const char *path) { |
930 | _cleanup_free_ char *dn = NULL; | |
a5648b80 | 931 | int r, fd; |
5ec9d065 | 932 | |
baaa35ad ZJS |
933 | if (path_equal(path, "/") || !path_is_normalized(path)) |
934 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
935 | "Failed to open parent of '%s': invalid path.", | |
936 | path); | |
5ec9d065 FB |
937 | |
938 | dn = dirname_malloc(path); | |
939 | if (!dn) | |
940 | return log_oom(); | |
941 | ||
a5648b80 ZJS |
942 | r = chase_symlinks(dn, arg_root, CHASE_SAFE|CHASE_WARN, NULL, &fd); |
943 | if (r < 0 && r != -ENOLINK) | |
944 | return log_error_errno(r, "Failed to validate path %s: %m", path); | |
5ec9d065 | 945 | |
a5648b80 | 946 | return r < 0 ? r : fd; |
5ec9d065 FB |
947 | } |
948 | ||
addc3e30 | 949 | static int path_open_safe(const char *path) { |
a5648b80 | 950 | int r, fd; |
addc3e30 FB |
951 | |
952 | /* path_open_safe() returns a file descriptor opened with O_PATH after | |
953 | * verifying that the path doesn't contain unsafe transitions, except | |
954 | * for its final component as the function does not follow symlink. */ | |
955 | ||
956 | assert(path); | |
957 | ||
baaa35ad ZJS |
958 | if (!path_is_normalized(path)) |
959 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
960 | "Failed to open invalid path '%s'.", | |
961 | path); | |
addc3e30 | 962 | |
a5648b80 ZJS |
963 | r = chase_symlinks(path, arg_root, CHASE_SAFE|CHASE_WARN|CHASE_NOFOLLOW, NULL, &fd); |
964 | if (r < 0 && r != -ENOLINK) | |
965 | return log_error_errno(r, "Failed to validate path %s: %m", path); | |
addc3e30 | 966 | |
a5648b80 | 967 | return r < 0 ? r : fd; |
addc3e30 FB |
968 | } |
969 | ||
936f6bdb FB |
970 | static int path_set_perms(Item *i, const char *path) { |
971 | _cleanup_close_ int fd = -1; | |
936f6bdb FB |
972 | |
973 | assert(i); | |
974 | assert(path); | |
975 | ||
addc3e30 | 976 | fd = path_open_safe(path); |
54946021 | 977 | if (fd < 0) |
addc3e30 | 978 | return fd; |
d460ba18 | 979 | |
9d874aec | 980 | return fd_set_perms(i, fd, path, NULL); |
936f6bdb FB |
981 | } |
982 | ||
bd550f78 | 983 | static int parse_xattrs_from_arg(Item *i) { |
ebf4e801 MW |
984 | const char *p; |
985 | int r; | |
986 | ||
987 | assert(i); | |
505ef0e3 | 988 | assert(i->argument); |
ebf4e801 | 989 | |
ebf4e801 MW |
990 | p = i->argument; |
991 | ||
4034a06d | 992 | for (;;) { |
4cef1923 | 993 | _cleanup_free_ char *name = NULL, *value = NULL, *xattr = NULL; |
4034a06d | 994 | |
4ec85141 | 995 | r = extract_first_word(&p, &xattr, NULL, EXTRACT_UNQUOTE|EXTRACT_CUNESCAPE); |
4034a06d | 996 | if (r < 0) |
bd550f78 | 997 | log_warning_errno(r, "Failed to parse extended attribute '%s', ignoring: %m", p); |
4034a06d LP |
998 | if (r <= 0) |
999 | break; | |
505ef0e3 | 1000 | |
4cef1923 | 1001 | r = split_pair(xattr, "=", &name, &value); |
ebf4e801 | 1002 | if (r < 0) { |
4034a06d | 1003 | log_warning_errno(r, "Failed to parse extended attribute, ignoring: %s", xattr); |
ebf4e801 MW |
1004 | continue; |
1005 | } | |
505ef0e3 | 1006 | |
4034a06d | 1007 | if (isempty(name) || isempty(value)) { |
bd550f78 | 1008 | log_warning("Malformed extended attribute found, ignoring: %s", xattr); |
ebf4e801 MW |
1009 | continue; |
1010 | } | |
505ef0e3 | 1011 | |
4034a06d | 1012 | if (strv_push_pair(&i->xattrs, name, value) < 0) |
ebf4e801 | 1013 | return log_oom(); |
505ef0e3 | 1014 | |
4034a06d | 1015 | name = value = NULL; |
ebf4e801 MW |
1016 | } |
1017 | ||
4034a06d | 1018 | return 0; |
ebf4e801 MW |
1019 | } |
1020 | ||
9d874aec | 1021 | static int fd_set_xattrs(Item *i, int fd, const char *path, const struct stat *st) { |
34d26777 | 1022 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
ebf4e801 MW |
1023 | char **name, **value; |
1024 | ||
1025 | assert(i); | |
936f6bdb | 1026 | assert(fd); |
4dc7bfdf | 1027 | assert(path); |
936f6bdb FB |
1028 | |
1029 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); | |
ebf4e801 | 1030 | |
ebf4e801 | 1031 | STRV_FOREACH_PAIR(name, value, i->xattrs) { |
bd550f78 | 1032 | log_debug("Setting extended attribute '%s=%s' on %s.", *name, *value, path); |
936f6bdb | 1033 | if (setxattr(procfs_path, *name, *value, strlen(*value), 0) < 0) |
25f027c5 ZJS |
1034 | return log_error_errno(errno, "Setting extended attribute %s=%s on %s failed: %m", |
1035 | *name, *value, path); | |
ebf4e801 MW |
1036 | } |
1037 | return 0; | |
1038 | } | |
1039 | ||
936f6bdb FB |
1040 | static int path_set_xattrs(Item *i, const char *path) { |
1041 | _cleanup_close_ int fd = -1; | |
1042 | ||
1043 | assert(i); | |
1044 | assert(path); | |
1045 | ||
addc3e30 | 1046 | fd = path_open_safe(path); |
936f6bdb | 1047 | if (fd < 0) |
addc3e30 | 1048 | return fd; |
936f6bdb | 1049 | |
9d874aec | 1050 | return fd_set_xattrs(i, fd, path, NULL); |
936f6bdb FB |
1051 | } |
1052 | ||
bd550f78 | 1053 | static int parse_acls_from_arg(Item *item) { |
349cc4a5 | 1054 | #if HAVE_ACL |
f8eeeaf9 | 1055 | int r; |
f8eeeaf9 ZJS |
1056 | |
1057 | assert(item); | |
1058 | ||
c55ac248 | 1059 | /* If append_or_force (= modify) is set, we will not modify the acl |
50d9e46d | 1060 | * afterwards, so the mask can be added now if necessary. */ |
bd550f78 | 1061 | |
c55ac248 | 1062 | r = parse_acl(item->argument, &item->acl_access, &item->acl_default, !item->append_or_force); |
f8eeeaf9 | 1063 | if (r < 0) |
4034a06d | 1064 | log_warning_errno(r, "Failed to parse ACL \"%s\": %m. Ignoring", item->argument); |
f8eeeaf9 | 1065 | #else |
6008336f | 1066 | log_warning("ACLs are not supported. Ignoring."); |
f8eeeaf9 ZJS |
1067 | #endif |
1068 | ||
1069 | return 0; | |
1070 | } | |
1071 | ||
349cc4a5 | 1072 | #if HAVE_ACL |
48b8aaa8 LP |
1073 | static int path_set_acl(const char *path, const char *pretty, acl_type_t type, acl_t acl, bool modify) { |
1074 | _cleanup_(acl_free_charpp) char *t = NULL; | |
dd4105b0 | 1075 | _cleanup_(acl_freep) acl_t dup = NULL; |
50d9e46d ZJS |
1076 | int r; |
1077 | ||
d873e877 HPD |
1078 | /* Returns 0 for success, positive error if already warned, |
1079 | * negative error otherwise. */ | |
1080 | ||
50d9e46d | 1081 | if (modify) { |
dd4105b0 | 1082 | r = acls_for_file(path, type, acl, &dup); |
50d9e46d ZJS |
1083 | if (r < 0) |
1084 | return r; | |
50d9e46d | 1085 | |
dd4105b0 ZJS |
1086 | r = calc_acl_mask_if_needed(&dup); |
1087 | if (r < 0) | |
1088 | return r; | |
1089 | } else { | |
1090 | dup = acl_dup(acl); | |
1091 | if (!dup) | |
1092 | return -errno; | |
1093 | ||
1094 | /* the mask was already added earlier if needed */ | |
1095 | } | |
1096 | ||
1097 | r = add_base_acls_if_needed(&dup, path); | |
1098 | if (r < 0) | |
1099 | return r; | |
1100 | ||
582deb84 | 1101 | t = acl_to_any_text(dup, NULL, ',', TEXT_ABBREVIATE); |
48b8aaa8 | 1102 | log_debug("Setting %s ACL %s on %s.", |
582deb84 | 1103 | type == ACL_TYPE_ACCESS ? "access" : "default", |
48b8aaa8 | 1104 | strna(t), pretty); |
50d9e46d | 1105 | |
582deb84 | 1106 | r = acl_set_file(path, type, dup); |
3045c416 PC |
1107 | if (r < 0) { |
1108 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
1109 | /* No error if filesystem doesn't support ACLs. Return negative. */ | |
1110 | return -errno; | |
1111 | else | |
1112 | /* Return positive to indicate we already warned */ | |
1113 | return -log_error_errno(errno, | |
1114 | "Setting %s ACL \"%s\" on %s failed: %m", | |
1115 | type == ACL_TYPE_ACCESS ? "access" : "default", | |
1116 | strna(t), pretty); | |
1117 | } | |
582deb84 | 1118 | return 0; |
50d9e46d | 1119 | } |
35888b67 | 1120 | #endif |
50d9e46d | 1121 | |
9d874aec | 1122 | static int fd_set_acls(Item *item, int fd, const char *path, const struct stat *st) { |
d873e877 | 1123 | int r = 0; |
349cc4a5 | 1124 | #if HAVE_ACL |
34d26777 | 1125 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
b206ac8e | 1126 | struct stat stbuf; |
48b8aaa8 | 1127 | |
f8eeeaf9 | 1128 | assert(item); |
936f6bdb | 1129 | assert(fd); |
4dc7bfdf | 1130 | assert(path); |
48b8aaa8 | 1131 | |
b206ac8e FB |
1132 | if (!st) { |
1133 | if (fstat(fd, &stbuf) < 0) | |
1134 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
1135 | st = &stbuf; | |
1136 | } | |
1137 | ||
baaa35ad ZJS |
1138 | if (hardlink_vulnerable(st)) |
1139 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
1140 | "Refusing to set ACLs on hardlinked file %s while the fs.protected_hardlinks sysctl is turned off.", | |
1141 | path); | |
5579f856 | 1142 | |
936f6bdb | 1143 | if (S_ISLNK(st->st_mode)) { |
48b8aaa8 LP |
1144 | log_debug("Skipping ACL fix for symlink %s.", path); |
1145 | return 0; | |
1146 | } | |
1147 | ||
936f6bdb | 1148 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); |
48b8aaa8 | 1149 | |
d873e877 | 1150 | if (item->acl_access) |
c55ac248 | 1151 | r = path_set_acl(procfs_path, path, ACL_TYPE_ACCESS, item->acl_access, item->append_or_force); |
f8eeeaf9 | 1152 | |
2667385b RM |
1153 | /* set only default acls to folders */ |
1154 | if (r == 0 && item->acl_default && S_ISDIR(st->st_mode)) | |
c55ac248 | 1155 | r = path_set_acl(procfs_path, path, ACL_TYPE_DEFAULT, item->acl_default, item->append_or_force); |
f8eeeaf9 | 1156 | |
3045c416 PC |
1157 | if (ERRNO_IS_NOT_SUPPORTED(r)) { |
1158 | log_debug_errno(r, "ACLs not supported by file system at %s", path); | |
1159 | return 0; | |
1160 | } | |
1161 | ||
d873e877 HPD |
1162 | if (r > 0) |
1163 | return -r; /* already warned */ | |
f8606626 LP |
1164 | |
1165 | /* The above procfs paths don't work if /proc is not mounted. */ | |
1166 | if (r == -ENOENT && proc_mounted() == 0) | |
1167 | r = -ENOSYS; | |
1168 | ||
936f6bdb FB |
1169 | if (r < 0) |
1170 | return log_error_errno(r, "ACL operation on \"%s\" failed: %m", path); | |
d873e877 HPD |
1171 | #endif |
1172 | return r; | |
f8eeeaf9 ZJS |
1173 | } |
1174 | ||
936f6bdb FB |
1175 | static int path_set_acls(Item *item, const char *path) { |
1176 | int r = 0; | |
545cdb90 | 1177 | #if HAVE_ACL |
936f6bdb | 1178 | _cleanup_close_ int fd = -1; |
936f6bdb FB |
1179 | |
1180 | assert(item); | |
1181 | assert(path); | |
1182 | ||
addc3e30 | 1183 | fd = path_open_safe(path); |
936f6bdb | 1184 | if (fd < 0) |
addc3e30 | 1185 | return fd; |
936f6bdb | 1186 | |
9d874aec | 1187 | r = fd_set_acls(item, fd, path, NULL); |
545cdb90 YW |
1188 | #endif |
1189 | return r; | |
1190 | } | |
936f6bdb | 1191 | |
bd550f78 | 1192 | static int parse_attribute_from_arg(Item *item) { |
88ec4dfa LP |
1193 | |
1194 | static const struct { | |
1195 | char character; | |
1196 | unsigned value; | |
1197 | } attributes[] = { | |
1198 | { 'A', FS_NOATIME_FL }, /* do not update atime */ | |
1199 | { 'S', FS_SYNC_FL }, /* Synchronous updates */ | |
1200 | { 'D', FS_DIRSYNC_FL }, /* dirsync behaviour (directories only) */ | |
1201 | { 'a', FS_APPEND_FL }, /* writes to file may only append */ | |
1202 | { 'c', FS_COMPR_FL }, /* Compress file */ | |
1203 | { 'd', FS_NODUMP_FL }, /* do not dump file */ | |
8c35b2ca | 1204 | { 'e', FS_EXTENT_FL }, /* Extents */ |
88ec4dfa LP |
1205 | { 'i', FS_IMMUTABLE_FL }, /* Immutable file */ |
1206 | { 'j', FS_JOURNAL_DATA_FL }, /* Reserved for ext3 */ | |
1207 | { 's', FS_SECRM_FL }, /* Secure deletion */ | |
1208 | { 'u', FS_UNRM_FL }, /* Undelete */ | |
1209 | { 't', FS_NOTAIL_FL }, /* file tail should not be merged */ | |
13e785f7 | 1210 | { 'T', FS_TOPDIR_FL }, /* Top of directory hierarchies */ |
88ec4dfa | 1211 | { 'C', FS_NOCOW_FL }, /* Do not cow file */ |
75006470 | 1212 | { 'P', FS_PROJINHERIT_FL }, /* Inherit the quota project ID */ |
22c3a6ca | 1213 | }; |
88ec4dfa | 1214 | |
22c3a6ca GB |
1215 | enum { |
1216 | MODE_ADD, | |
1217 | MODE_DEL, | |
1218 | MODE_SET | |
1219 | } mode = MODE_ADD; | |
22c3a6ca | 1220 | |
88ec4dfa LP |
1221 | unsigned value = 0, mask = 0; |
1222 | const char *p; | |
22c3a6ca | 1223 | |
88ec4dfa LP |
1224 | assert(item); |
1225 | ||
1226 | p = item->argument; | |
1227 | if (p) { | |
1228 | if (*p == '+') { | |
1229 | mode = MODE_ADD; | |
1230 | p++; | |
1231 | } else if (*p == '-') { | |
1232 | mode = MODE_DEL; | |
1233 | p++; | |
1234 | } else if (*p == '=') { | |
1235 | mode = MODE_SET; | |
1236 | p++; | |
1237 | } | |
22c3a6ca GB |
1238 | } |
1239 | ||
baaa35ad ZJS |
1240 | if (isempty(p) && mode != MODE_SET) |
1241 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1242 | "Setting file attribute on '%s' needs an attribute specification.", | |
1243 | item->path); | |
88ec4dfa LP |
1244 | |
1245 | for (; p && *p ; p++) { | |
1246 | unsigned i, v; | |
1247 | ||
1248 | for (i = 0; i < ELEMENTSOF(attributes); i++) | |
1249 | if (*p == attributes[i].character) | |
1250 | break; | |
1251 | ||
baaa35ad ZJS |
1252 | if (i >= ELEMENTSOF(attributes)) |
1253 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1254 | "Unknown file attribute '%c' on '%s'.", | |
1255 | *p, item->path); | |
88ec4dfa LP |
1256 | |
1257 | v = attributes[i].value; | |
1258 | ||
3742095b | 1259 | SET_FLAG(value, v, IN_SET(mode, MODE_ADD, MODE_SET)); |
88ec4dfa LP |
1260 | |
1261 | mask |= v; | |
22c3a6ca GB |
1262 | } |
1263 | ||
1264 | if (mode == MODE_SET) | |
d629ba70 | 1265 | mask |= CHATTR_ALL_FL; |
22c3a6ca | 1266 | |
88ec4dfa | 1267 | assert(mask != 0); |
22c3a6ca | 1268 | |
88ec4dfa LP |
1269 | item->attribute_mask = mask; |
1270 | item->attribute_value = value; | |
1271 | item->attribute_set = true; | |
22c3a6ca GB |
1272 | |
1273 | return 0; | |
22c3a6ca GB |
1274 | } |
1275 | ||
9d874aec | 1276 | static int fd_set_attribute(Item *item, int fd, const char *path, const struct stat *st) { |
936f6bdb | 1277 | _cleanup_close_ int procfs_fd = -1; |
b206ac8e | 1278 | struct stat stbuf; |
88ec4dfa LP |
1279 | unsigned f; |
1280 | int r; | |
22c3a6ca | 1281 | |
4dc7bfdf FB |
1282 | assert(item); |
1283 | assert(fd); | |
1284 | assert(path); | |
1285 | ||
88ec4dfa | 1286 | if (!item->attribute_set || item->attribute_mask == 0) |
22c3a6ca | 1287 | return 0; |
22c3a6ca | 1288 | |
b206ac8e FB |
1289 | if (!st) { |
1290 | if (fstat(fd, &stbuf) < 0) | |
1291 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
1292 | st = &stbuf; | |
1293 | } | |
1294 | ||
88ec4dfa LP |
1295 | /* Issuing the file attribute ioctls on device nodes is not |
1296 | * safe, as that will be delivered to the drivers, not the | |
1297 | * file system containing the device node. */ | |
baaa35ad ZJS |
1298 | if (!S_ISREG(st->st_mode) && !S_ISDIR(st->st_mode)) |
1299 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1300 | "Setting file flags is only supported on regular files and directories, cannot set on '%s'.", | |
1301 | path); | |
88ec4dfa LP |
1302 | |
1303 | f = item->attribute_value & item->attribute_mask; | |
1304 | ||
1305 | /* Mask away directory-specific flags */ | |
936f6bdb | 1306 | if (!S_ISDIR(st->st_mode)) |
22c3a6ca | 1307 | f &= ~FS_DIRSYNC_FL; |
88ec4dfa | 1308 | |
f2324783 | 1309 | procfs_fd = fd_reopen(fd, O_RDONLY|O_CLOEXEC|O_NOATIME); |
936f6bdb | 1310 | if (procfs_fd < 0) |
c3e03778 | 1311 | return log_error_errno(procfs_fd, "Failed to re-open '%s': %m", path); |
936f6bdb | 1312 | |
94566540 YW |
1313 | unsigned previous, current; |
1314 | r = chattr_full(NULL, procfs_fd, f, item->attribute_mask, &previous, ¤t, true); | |
1315 | if (r == -ENOANO) | |
d1a61dfa | 1316 | log_warning("Cannot set file attributes for '%s', maybe due to incompatibility in specified attributes, " |
94566540 YW |
1317 | "previous=0x%08x, current=0x%08x, expected=0x%08x, ignoring.", |
1318 | path, previous, current, (previous & ~item->attribute_mask) | (f & item->attribute_mask)); | |
1319 | else if (r < 0) | |
1320 | log_full_errno(ERRNO_IS_NOT_SUPPORTED(r) ? LOG_DEBUG : LOG_WARNING, r, | |
1321 | "Cannot set file attributes for '%s', value=0x%08x, mask=0x%08x, ignoring: %m", | |
ad75a97f | 1322 | path, item->attribute_value, item->attribute_mask); |
22c3a6ca GB |
1323 | |
1324 | return 0; | |
1325 | } | |
1326 | ||
936f6bdb FB |
1327 | static int path_set_attribute(Item *item, const char *path) { |
1328 | _cleanup_close_ int fd = -1; | |
936f6bdb FB |
1329 | |
1330 | if (!item->attribute_set || item->attribute_mask == 0) | |
1331 | return 0; | |
1332 | ||
addc3e30 | 1333 | fd = path_open_safe(path); |
936f6bdb | 1334 | if (fd < 0) |
addc3e30 | 1335 | return fd; |
936f6bdb | 1336 | |
9d874aec | 1337 | return fd_set_attribute(item, fd, path, NULL); |
936f6bdb FB |
1338 | } |
1339 | ||
d4e9eb91 | 1340 | static int write_one_file(Item *i, const char *path) { |
551470ec FB |
1341 | _cleanup_close_ int fd = -1, dir_fd = -1; |
1342 | char *bn; | |
1baaf8aa | 1343 | int r; |
31c84ff1 FB |
1344 | |
1345 | assert(i); | |
1346 | assert(path); | |
1347 | assert(i->argument); | |
1348 | assert(i->type == WRITE_FILE); | |
1349 | ||
551470ec FB |
1350 | /* Validate the path and keep the fd on the directory for opening the |
1351 | * file so we're sure that it can't be changed behind our back. */ | |
1352 | dir_fd = path_open_parent_safe(path); | |
1353 | if (dir_fd < 0) | |
1354 | return dir_fd; | |
1355 | ||
1356 | bn = basename(path); | |
1357 | ||
31c84ff1 | 1358 | /* Follows symlinks */ |
1baaf8aa LP |
1359 | fd = openat(dir_fd, bn, |
1360 | O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY|(i->append_or_force ? O_APPEND : 0), | |
1361 | i->mode); | |
31c84ff1 FB |
1362 | if (fd < 0) { |
1363 | if (errno == ENOENT) { | |
1364 | log_debug_errno(errno, "Not writing missing file \"%s\": %m", path); | |
1365 | return 0; | |
1366 | } | |
1baaf8aa LP |
1367 | |
1368 | if (i->allow_failure) | |
1369 | return log_debug_errno(errno, "Failed to open file \"%s\", ignoring: %m", path); | |
1370 | ||
31c84ff1 FB |
1371 | return log_error_errno(errno, "Failed to open file \"%s\": %m", path); |
1372 | } | |
1373 | ||
1374 | /* 'w' is allowed to write into any kind of files. */ | |
1375 | log_debug("Writing to \"%s\".", path); | |
1376 | ||
1377 | r = loop_write(fd, i->argument, strlen(i->argument), false); | |
1378 | if (r < 0) | |
1379 | return log_error_errno(r, "Failed to write file \"%s\": %m", path); | |
1380 | ||
9d874aec | 1381 | return fd_set_perms(i, fd, path, NULL); |
31c84ff1 FB |
1382 | } |
1383 | ||
1384 | static int create_file(Item *i, const char *path) { | |
5ec9d065 FB |
1385 | _cleanup_close_ int fd = -1, dir_fd = -1; |
1386 | struct stat stbuf, *st = NULL; | |
1387 | int r = 0; | |
1388 | char *bn; | |
d4e9eb91 | 1389 | |
874f1947 LP |
1390 | assert(i); |
1391 | assert(path); | |
5ec9d065 FB |
1392 | assert(i->type == CREATE_FILE); |
1393 | ||
1394 | /* 'f' operates on regular files exclusively. */ | |
1395 | ||
1396 | /* Validate the path and keep the fd on the directory for opening the | |
1397 | * file so we're sure that it can't be changed behind our back. */ | |
1398 | dir_fd = path_open_parent_safe(path); | |
1399 | if (dir_fd < 0) | |
1400 | return dir_fd; | |
874f1947 | 1401 | |
5ec9d065 | 1402 | bn = basename(path); |
d4e9eb91 | 1403 | |
43ad6e31 | 1404 | RUN_WITH_UMASK(0000) { |
ecabcf8b | 1405 | mac_selinux_create_file_prepare(path, S_IFREG); |
5ec9d065 | 1406 | fd = openat(dir_fd, bn, O_CREAT|O_EXCL|O_NOFOLLOW|O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode); |
ecabcf8b | 1407 | mac_selinux_create_file_clear(); |
5c0d398d | 1408 | } |
d4e9eb91 DR |
1409 | |
1410 | if (fd < 0) { | |
5ec9d065 FB |
1411 | /* Even on a read-only filesystem, open(2) returns EEXIST if the |
1412 | * file already exists. It returns EROFS only if it needs to | |
1413 | * create the file. */ | |
1414 | if (errno != EEXIST) | |
1415 | return log_error_errno(errno, "Failed to create file %s: %m", path); | |
1416 | ||
1417 | /* Re-open the file. At that point it must exist since open(2) | |
1418 | * failed with EEXIST. We still need to check if the perms/mode | |
1419 | * need to be changed. For read-only filesystems, we let | |
1420 | * fd_set_perms() report the error if the perms need to be | |
1421 | * modified. */ | |
1422 | fd = openat(dir_fd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH, i->mode); | |
1423 | if (fd < 0) | |
1424 | return log_error_errno(errno, "Failed to re-open file %s: %m", path); | |
1425 | ||
1426 | if (fstat(fd, &stbuf) < 0) | |
1427 | return log_error_errno(errno, "stat(%s) failed: %m", path); | |
1428 | ||
d7a0f1f4 FS |
1429 | if (!S_ISREG(stbuf.st_mode)) |
1430 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
1431 | "%s exists and is not a regular file.", | |
1432 | path); | |
d4e9eb91 | 1433 | |
5ec9d065 FB |
1434 | st = &stbuf; |
1435 | } else { | |
1436 | ||
1437 | log_debug("\"%s\" has been created.", path); | |
1438 | ||
1439 | if (i->argument) { | |
1440 | log_debug("Writing to \"%s\".", path); | |
f44b28fd | 1441 | |
5ec9d065 FB |
1442 | r = loop_write(fd, i->argument, strlen(i->argument), false); |
1443 | if (r < 0) | |
1444 | return log_error_errno(r, "Failed to write file \"%s\": %m", path); | |
1445 | } | |
d4e9eb91 DR |
1446 | } |
1447 | ||
9d874aec | 1448 | return fd_set_perms(i, fd, path, st); |
5ec9d065 | 1449 | } |
d4e9eb91 | 1450 | |
5ec9d065 | 1451 | static int truncate_file(Item *i, const char *path) { |
14ab804e | 1452 | _cleanup_close_ int fd = -1, dir_fd = -1; |
5ec9d065 FB |
1453 | struct stat stbuf, *st = NULL; |
1454 | bool erofs = false; | |
1455 | int r = 0; | |
14ab804e | 1456 | char *bn; |
5ec9d065 FB |
1457 | |
1458 | assert(i); | |
1459 | assert(path); | |
eccebf4b | 1460 | assert(i->type == TRUNCATE_FILE || (i->type == CREATE_FILE && i->append_or_force)); |
d4e9eb91 | 1461 | |
5ec9d065 FB |
1462 | /* We want to operate on regular file exclusively especially since |
1463 | * O_TRUNC is unspecified if the file is neither a regular file nor a | |
1464 | * fifo nor a terminal device. Therefore we first open the file and make | |
1465 | * sure it's a regular one before truncating it. */ | |
3612fbc1 | 1466 | |
14ab804e FB |
1467 | /* Validate the path and keep the fd on the directory for opening the |
1468 | * file so we're sure that it can't be changed behind our back. */ | |
1469 | dir_fd = path_open_parent_safe(path); | |
1470 | if (dir_fd < 0) | |
1471 | return dir_fd; | |
1472 | ||
1473 | bn = basename(path); | |
1474 | ||
5ec9d065 FB |
1475 | RUN_WITH_UMASK(0000) { |
1476 | mac_selinux_create_file_prepare(path, S_IFREG); | |
14ab804e | 1477 | fd = openat(dir_fd, bn, O_CREAT|O_NOFOLLOW|O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode); |
5ec9d065 FB |
1478 | mac_selinux_create_file_clear(); |
1479 | } | |
1480 | ||
1481 | if (fd < 0) { | |
1482 | if (errno != EROFS) | |
1483 | return log_error_errno(errno, "Failed to open/create file %s: %m", path); | |
1484 | ||
1485 | /* On a read-only filesystem, we don't want to fail if the | |
1486 | * target is already empty and the perms are set. So we still | |
1487 | * proceed with the sanity checks and let the remaining | |
1488 | * operations fail with EROFS if they try to modify the target | |
1489 | * file. */ | |
1490 | ||
14ab804e | 1491 | fd = openat(dir_fd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH, i->mode); |
5ec9d065 | 1492 | if (fd < 0) { |
d7a0f1f4 FS |
1493 | if (errno == ENOENT) |
1494 | return log_error_errno(SYNTHETIC_ERRNO(EROFS), | |
1495 | "Cannot create file %s on a read-only file system.", | |
1496 | path); | |
5ec9d065 FB |
1497 | |
1498 | return log_error_errno(errno, "Failed to re-open file %s: %m", path); | |
1499 | } | |
1500 | ||
1501 | erofs = true; | |
1502 | } | |
1503 | ||
1504 | if (fstat(fd, &stbuf) < 0) | |
4a62c710 | 1505 | return log_error_errno(errno, "stat(%s) failed: %m", path); |
d4e9eb91 | 1506 | |
d7a0f1f4 FS |
1507 | if (!S_ISREG(stbuf.st_mode)) |
1508 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
1509 | "%s exists and is not a regular file.", | |
1510 | path); | |
d4e9eb91 | 1511 | |
5ec9d065 FB |
1512 | if (stbuf.st_size > 0) { |
1513 | if (ftruncate(fd, 0) < 0) { | |
1514 | r = erofs ? -EROFS : -errno; | |
1515 | return log_error_errno(r, "Failed to truncate file %s: %m", path); | |
1516 | } | |
1517 | } else | |
1518 | st = &stbuf; | |
d4e9eb91 | 1519 | |
5ec9d065 FB |
1520 | log_debug("\"%s\" has been created.", path); |
1521 | ||
1522 | if (i->argument) { | |
1523 | log_debug("Writing to \"%s\".", path); | |
1524 | ||
1525 | r = loop_write(fd, i->argument, strlen(i->argument), false); | |
1526 | if (r < 0) { | |
1527 | r = erofs ? -EROFS : r; | |
1528 | return log_error_errno(r, "Failed to write file %s: %m", path); | |
1529 | } | |
1530 | } | |
1531 | ||
9d874aec | 1532 | return fd_set_perms(i, fd, path, st); |
d4e9eb91 DR |
1533 | } |
1534 | ||
b1f7b17f | 1535 | static int copy_files(Item *i) { |
16ba55ad FB |
1536 | _cleanup_close_ int dfd = -1, fd = -1; |
1537 | char *bn; | |
b1f7b17f FB |
1538 | int r; |
1539 | ||
1540 | log_debug("Copying tree \"%s\" to \"%s\".", i->argument, i->path); | |
1541 | ||
16ba55ad | 1542 | bn = basename(i->path); |
b1f7b17f | 1543 | |
16ba55ad FB |
1544 | /* Validate the path and use the returned directory fd for copying the |
1545 | * target so we're sure that the path can't be changed behind our | |
1546 | * back. */ | |
1547 | dfd = path_open_parent_safe(i->path); | |
1548 | if (dfd < 0) | |
1549 | return dfd; | |
b1f7b17f | 1550 | |
16ba55ad FB |
1551 | r = copy_tree_at(AT_FDCWD, i->argument, |
1552 | dfd, bn, | |
1553 | i->uid_set ? i->uid : UID_INVALID, | |
1554 | i->gid_set ? i->gid : GID_INVALID, | |
652d9040 | 1555 | COPY_REFLINK | COPY_MERGE_EMPTY | COPY_MAC_CREATE | COPY_HARDLINKS); |
b1f7b17f FB |
1556 | if (r < 0) { |
1557 | struct stat a, b; | |
1558 | ||
16ba55ad FB |
1559 | /* If the target already exists on read-only filesystems, trying |
1560 | * to create the target will not fail with EEXIST but with | |
1561 | * EROFS. */ | |
1562 | if (r == -EROFS && faccessat(dfd, bn, F_OK, AT_SYMLINK_NOFOLLOW) == 0) | |
1563 | r = -EEXIST; | |
1564 | ||
b1f7b17f FB |
1565 | if (r != -EEXIST) |
1566 | return log_error_errno(r, "Failed to copy files to %s: %m", i->path); | |
1567 | ||
1568 | if (stat(i->argument, &a) < 0) | |
1569 | return log_error_errno(errno, "stat(%s) failed: %m", i->argument); | |
1570 | ||
16ba55ad | 1571 | if (fstatat(dfd, bn, &b, AT_SYMLINK_NOFOLLOW) < 0) |
b1f7b17f FB |
1572 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); |
1573 | ||
1574 | if ((a.st_mode ^ b.st_mode) & S_IFMT) { | |
1575 | log_debug("Can't copy to %s, file exists already and is of different type", i->path); | |
1576 | return 0; | |
1577 | } | |
1578 | } | |
1579 | ||
16ba55ad FB |
1580 | fd = openat(dfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1581 | if (fd < 0) | |
1582 | return log_error_errno(errno, "Failed to openat(%s): %m", i->path); | |
1583 | ||
9d874aec | 1584 | return fd_set_perms(i, fd, i->path, NULL); |
b1f7b17f FB |
1585 | } |
1586 | ||
074bd73f FB |
1587 | typedef enum { |
1588 | CREATION_NORMAL, | |
1589 | CREATION_EXISTING, | |
1590 | CREATION_FORCE, | |
1591 | _CREATION_MODE_MAX, | |
2d93c20e | 1592 | _CREATION_MODE_INVALID = -EINVAL, |
074bd73f FB |
1593 | } CreationMode; |
1594 | ||
b82f71c7 | 1595 | static const char *const creation_mode_verb_table[_CREATION_MODE_MAX] = { |
074bd73f FB |
1596 | [CREATION_NORMAL] = "Created", |
1597 | [CREATION_EXISTING] = "Found existing", | |
1598 | [CREATION_FORCE] = "Created replacement", | |
1599 | }; | |
1600 | ||
1601 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb, CreationMode); | |
1602 | ||
f17a8d61 | 1603 | static int create_directory_or_subvolume(const char *path, mode_t mode, bool subvol, CreationMode *creation) { |
4c39d899 | 1604 | _cleanup_close_ int pfd = -1; |
f17a8d61 | 1605 | CreationMode c; |
4c39d899 | 1606 | int r; |
4ad36844 | 1607 | |
4c39d899 | 1608 | assert(path); |
4ad36844 | 1609 | |
f17a8d61 FB |
1610 | if (!creation) |
1611 | creation = &c; | |
1612 | ||
4c39d899 FB |
1613 | pfd = path_open_parent_safe(path); |
1614 | if (pfd < 0) | |
1615 | return pfd; | |
4ad36844 | 1616 | |
4c39d899 | 1617 | if (subvol) { |
4368c60c AV |
1618 | r = getenv_bool("SYSTEMD_TMPFILES_FORCE_SUBVOL"); |
1619 | if (r < 0) { | |
1620 | if (r != -ENXIO) /* env var is unset */ | |
1621 | log_warning_errno(r, "Cannot parse value of $SYSTEMD_TMPFILES_FORCE_SUBVOL, ignoring."); | |
1622 | r = btrfs_is_subvol(empty_to_root(arg_root)) > 0; | |
1623 | } | |
1624 | if (!r) | |
4ad36844 FB |
1625 | /* Don't create a subvolume unless the root directory is |
1626 | * one, too. We do this under the assumption that if the | |
1627 | * root directory is just a plain directory (i.e. very | |
1628 | * light-weight), we shouldn't try to split it up into | |
1629 | * subvolumes (i.e. more heavy-weight). Thus, chroot() | |
1630 | * environments and suchlike will get a full brtfs | |
1631 | * subvolume set up below their tree only if they | |
1632 | * specifically set up a btrfs subvolume for the root | |
1633 | * dir too. */ | |
1634 | ||
4c39d899 | 1635 | subvol = false; |
4ad36844 | 1636 | else { |
4c39d899 FB |
1637 | RUN_WITH_UMASK((~mode) & 0777) |
1638 | r = btrfs_subvol_make_fd(pfd, basename(path)); | |
4ad36844 FB |
1639 | } |
1640 | } else | |
1641 | r = 0; | |
1642 | ||
4c39d899 | 1643 | if (!subvol || r == -ENOTTY) |
4ad36844 | 1644 | RUN_WITH_UMASK(0000) |
4c39d899 | 1645 | r = mkdirat_label(pfd, basename(path), mode); |
4ad36844 FB |
1646 | |
1647 | if (r < 0) { | |
1648 | int k; | |
1649 | ||
1650 | if (!IN_SET(r, -EEXIST, -EROFS)) | |
4c39d899 | 1651 | return log_error_errno(r, "Failed to create directory or subvolume \"%s\": %m", path); |
4ad36844 | 1652 | |
4c39d899 | 1653 | k = is_dir_fd(pfd); |
4ad36844 | 1654 | if (k == -ENOENT && r == -EROFS) |
4c39d899 | 1655 | return log_error_errno(r, "%s does not exist and cannot be created as the file system is read-only.", path); |
4ad36844 | 1656 | if (k < 0) |
4c39d899 | 1657 | return log_error_errno(k, "Failed to check if %s exists: %m", path); |
b88ba6c7 ZJS |
1658 | if (!k) |
1659 | return log_warning_errno(SYNTHETIC_ERRNO(EEXIST), | |
1660 | "\"%s\" already exists and is not a directory.", path); | |
4ad36844 | 1661 | |
f17a8d61 | 1662 | *creation = CREATION_EXISTING; |
4ad36844 | 1663 | } else |
f17a8d61 | 1664 | *creation = CREATION_NORMAL; |
4ad36844 | 1665 | |
f17a8d61 | 1666 | log_debug("%s directory \"%s\".", creation_mode_verb_to_string(*creation), path); |
4c39d899 FB |
1667 | |
1668 | r = openat(pfd, basename(path), O_NOCTTY|O_CLOEXEC|O_DIRECTORY); | |
1669 | if (r < 0) | |
09f12798 LP |
1670 | return log_error_errno(errno, "Failed to open directory '%s': %m", basename(path)); |
1671 | ||
4c39d899 FB |
1672 | return r; |
1673 | } | |
1674 | ||
1675 | static int create_directory(Item *i, const char *path) { | |
1676 | _cleanup_close_ int fd = -1; | |
1677 | ||
1678 | assert(i); | |
1679 | assert(IN_SET(i->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY)); | |
1680 | ||
f17a8d61 | 1681 | fd = create_directory_or_subvolume(path, i->mode, false, NULL); |
4c39d899 FB |
1682 | if (fd == -EEXIST) |
1683 | return 0; | |
1684 | if (fd < 0) | |
1685 | return fd; | |
1686 | ||
9d874aec | 1687 | return fd_set_perms(i, fd, path, NULL); |
4c39d899 FB |
1688 | } |
1689 | ||
1690 | static int create_subvolume(Item *i, const char *path) { | |
1691 | _cleanup_close_ int fd = -1; | |
f17a8d61 | 1692 | CreationMode creation; |
4c39d899 FB |
1693 | int r, q = 0; |
1694 | ||
1695 | assert(i); | |
1696 | assert(IN_SET(i->type, CREATE_SUBVOLUME, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)); | |
1697 | ||
f17a8d61 | 1698 | fd = create_directory_or_subvolume(path, i->mode, true, &creation); |
4c39d899 FB |
1699 | if (fd == -EEXIST) |
1700 | return 0; | |
1701 | if (fd < 0) | |
1702 | return fd; | |
4ad36844 | 1703 | |
f17a8d61 FB |
1704 | if (creation == CREATION_NORMAL && |
1705 | IN_SET(i->type, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)) { | |
4c39d899 | 1706 | r = btrfs_subvol_auto_qgroup_fd(fd, 0, i->type == CREATE_SUBVOLUME_NEW_QUOTA); |
4ad36844 FB |
1707 | if (r == -ENOTTY) |
1708 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (unsupported fs or dir not a subvolume): %m", i->path); | |
1709 | else if (r == -EROFS) | |
1710 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (fs is read-only).", i->path); | |
4b019d2f | 1711 | else if (r == -ENOTCONN) |
4ad36844 FB |
1712 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (quota support is disabled).", i->path); |
1713 | else if (r < 0) | |
1714 | q = log_error_errno(r, "Failed to adjust quota for subvolume \"%s\": %m", i->path); | |
1715 | else if (r > 0) | |
1716 | log_debug("Adjusted quota for subvolume \"%s\".", i->path); | |
1717 | else if (r == 0) | |
1718 | log_debug("Quota for subvolume \"%s\" already in place, no change made.", i->path); | |
1719 | } | |
1720 | ||
9d874aec LP |
1721 | r = fd_set_perms(i, fd, path, NULL); |
1722 | if (q < 0) /* prefer the quota change error from above */ | |
4ad36844 FB |
1723 | return q; |
1724 | ||
1725 | return r; | |
1726 | } | |
1727 | ||
54946021 FB |
1728 | static int empty_directory(Item *i, const char *path) { |
1729 | int r; | |
1730 | ||
1731 | assert(i); | |
1732 | assert(i->type == EMPTY_DIRECTORY); | |
1733 | ||
1734 | r = is_dir(path, false); | |
1735 | if (r == -ENOENT) { | |
1736 | /* Option "e" operates only on existing objects. Do not | |
1737 | * print errors about non-existent files or directories */ | |
1738 | log_debug("Skipping missing directory: %s", path); | |
1739 | return 0; | |
1740 | } | |
1741 | if (r < 0) | |
1742 | return log_error_errno(r, "is_dir() failed on path %s: %m", path); | |
b88ba6c7 ZJS |
1743 | if (r == 0) { |
1744 | log_warning("\"%s\" already exists and is not a directory.", path); | |
1745 | return 0; | |
1746 | } | |
54946021 FB |
1747 | |
1748 | return path_set_perms(i, path); | |
1749 | } | |
1750 | ||
074bd73f | 1751 | static int create_device(Item *i, mode_t file_type) { |
c7700a77 | 1752 | _cleanup_close_ int dfd = -1, fd = -1; |
074bd73f | 1753 | CreationMode creation; |
c7700a77 | 1754 | char *bn; |
074bd73f FB |
1755 | int r; |
1756 | ||
1757 | assert(i); | |
1758 | assert(IN_SET(file_type, S_IFBLK, S_IFCHR)); | |
1759 | ||
c7700a77 FB |
1760 | bn = basename(i->path); |
1761 | ||
1762 | /* Validate the path and use the returned directory fd for copying the | |
1763 | * target so we're sure that the path can't be changed behind our | |
1764 | * back. */ | |
1765 | dfd = path_open_parent_safe(i->path); | |
1766 | if (dfd < 0) | |
1767 | return dfd; | |
1768 | ||
074bd73f FB |
1769 | RUN_WITH_UMASK(0000) { |
1770 | mac_selinux_create_file_prepare(i->path, file_type); | |
c7700a77 | 1771 | r = mknodat(dfd, bn, i->mode | file_type, i->major_minor); |
074bd73f FB |
1772 | mac_selinux_create_file_clear(); |
1773 | } | |
1774 | ||
1775 | if (r < 0) { | |
c7700a77 FB |
1776 | struct stat st; |
1777 | ||
074bd73f FB |
1778 | if (errno == EPERM) { |
1779 | log_debug("We lack permissions, possibly because of cgroup configuration; " | |
1780 | "skipping creation of device node %s.", i->path); | |
1781 | return 0; | |
1782 | } | |
1783 | ||
1784 | if (errno != EEXIST) | |
1785 | return log_error_errno(errno, "Failed to create device node %s: %m", i->path); | |
1786 | ||
c7700a77 | 1787 | if (fstatat(dfd, bn, &st, 0) < 0) |
074bd73f FB |
1788 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); |
1789 | ||
1790 | if ((st.st_mode & S_IFMT) != file_type) { | |
1791 | ||
c55ac248 | 1792 | if (i->append_or_force) { |
074bd73f FB |
1793 | |
1794 | RUN_WITH_UMASK(0000) { | |
1795 | mac_selinux_create_file_prepare(i->path, file_type); | |
c7700a77 | 1796 | /* FIXME: need to introduce mknodat_atomic() */ |
074bd73f FB |
1797 | r = mknod_atomic(i->path, i->mode | file_type, i->major_minor); |
1798 | mac_selinux_create_file_clear(); | |
1799 | } | |
1800 | ||
1801 | if (r < 0) | |
1802 | return log_error_errno(r, "Failed to create device node \"%s\": %m", i->path); | |
1803 | creation = CREATION_FORCE; | |
1804 | } else { | |
b88ba6c7 | 1805 | log_warning("\"%s\" already exists is not a device node.", i->path); |
074bd73f FB |
1806 | return 0; |
1807 | } | |
1808 | } else | |
1809 | creation = CREATION_EXISTING; | |
1810 | } else | |
1811 | creation = CREATION_NORMAL; | |
1812 | ||
1813 | log_debug("%s %s device node \"%s\" %u:%u.", | |
1814 | creation_mode_verb_to_string(creation), | |
1815 | i->type == CREATE_BLOCK_DEVICE ? "block" : "char", | |
1816 | i->path, major(i->mode), minor(i->mode)); | |
1817 | ||
c7700a77 FB |
1818 | fd = openat(dfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1819 | if (fd < 0) | |
1820 | return log_error_errno(errno, "Failed to openat(%s): %m", i->path); | |
1821 | ||
9d874aec | 1822 | return fd_set_perms(i, fd, i->path, NULL); |
074bd73f FB |
1823 | } |
1824 | ||
a2fc2f8d | 1825 | static int create_fifo(Item *i, const char *path) { |
7ea5a87f | 1826 | _cleanup_close_ int pfd = -1, fd = -1; |
a2fc2f8d FB |
1827 | CreationMode creation; |
1828 | struct stat st; | |
7ea5a87f | 1829 | char *bn; |
a2fc2f8d FB |
1830 | int r; |
1831 | ||
7ea5a87f FB |
1832 | pfd = path_open_parent_safe(path); |
1833 | if (pfd < 0) | |
1834 | return pfd; | |
1835 | ||
1836 | bn = basename(path); | |
1837 | ||
a2fc2f8d FB |
1838 | RUN_WITH_UMASK(0000) { |
1839 | mac_selinux_create_file_prepare(path, S_IFIFO); | |
7ea5a87f | 1840 | r = mkfifoat(pfd, bn, i->mode); |
a2fc2f8d FB |
1841 | mac_selinux_create_file_clear(); |
1842 | } | |
1843 | ||
1844 | if (r < 0) { | |
1845 | if (errno != EEXIST) | |
1846 | return log_error_errno(errno, "Failed to create fifo %s: %m", path); | |
1847 | ||
7ea5a87f | 1848 | if (fstatat(pfd, bn, &st, AT_SYMLINK_NOFOLLOW) < 0) |
a2fc2f8d FB |
1849 | return log_error_errno(errno, "stat(%s) failed: %m", path); |
1850 | ||
1851 | if (!S_ISFIFO(st.st_mode)) { | |
1852 | ||
c55ac248 | 1853 | if (i->append_or_force) { |
a2fc2f8d FB |
1854 | RUN_WITH_UMASK(0000) { |
1855 | mac_selinux_create_file_prepare(path, S_IFIFO); | |
7ea5a87f | 1856 | r = mkfifoat_atomic(pfd, bn, i->mode); |
a2fc2f8d FB |
1857 | mac_selinux_create_file_clear(); |
1858 | } | |
1859 | ||
1860 | if (r < 0) | |
1861 | return log_error_errno(r, "Failed to create fifo %s: %m", path); | |
1862 | creation = CREATION_FORCE; | |
1863 | } else { | |
1864 | log_warning("\"%s\" already exists and is not a fifo.", path); | |
1865 | return 0; | |
1866 | } | |
1867 | } else | |
1868 | creation = CREATION_EXISTING; | |
1869 | } else | |
1870 | creation = CREATION_NORMAL; | |
7ea5a87f | 1871 | |
a2fc2f8d FB |
1872 | log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation), path); |
1873 | ||
7ea5a87f FB |
1874 | fd = openat(pfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1875 | if (fd < 0) | |
a5df05ff | 1876 | return log_error_errno(errno, "Failed to openat(%s): %m", path); |
7ea5a87f | 1877 | |
9d874aec | 1878 | return fd_set_perms(i, fd, i->path, NULL); |
a2fc2f8d FB |
1879 | } |
1880 | ||
9d874aec LP |
1881 | typedef int (*action_t)(Item *i, const char *path); |
1882 | typedef int (*fdaction_t)(Item *i, int fd, const char *path, const struct stat *st); | |
081043cf | 1883 | |
9d874aec | 1884 | static int item_do(Item *i, int fd, const char *path, fdaction_t action) { |
14f3480a | 1885 | struct stat st; |
936f6bdb | 1886 | int r = 0, q; |
e73a03e0 LP |
1887 | |
1888 | assert(i); | |
4dc7bfdf | 1889 | assert(path); |
936f6bdb | 1890 | assert(fd >= 0); |
14f3480a FB |
1891 | |
1892 | if (fstat(fd, &st) < 0) { | |
09f12798 | 1893 | r = log_error_errno(errno, "fstat() on file failed: %m"); |
14f3480a FB |
1894 | goto finish; |
1895 | } | |
a8d88783 MS |
1896 | |
1897 | /* This returns the first error we run into, but nevertheless | |
1898 | * tries to go on */ | |
9d874aec | 1899 | r = action(i, fd, path, &st); |
a8d88783 | 1900 | |
14f3480a | 1901 | if (S_ISDIR(st.st_mode)) { |
22dd8d35 | 1902 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
936f6bdb FB |
1903 | _cleanup_closedir_ DIR *d = NULL; |
1904 | struct dirent *de; | |
a8d88783 | 1905 | |
936f6bdb FB |
1906 | /* The passed 'fd' was opened with O_PATH. We need to convert |
1907 | * it into a 'regular' fd before reading the directory content. */ | |
1908 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); | |
a8d88783 | 1909 | |
936f6bdb FB |
1910 | d = opendir(procfs_path); |
1911 | if (!d) { | |
09f12798 LP |
1912 | log_error_errno(errno, "Failed to opendir() '%s': %m", procfs_path); |
1913 | if (r == 0) | |
1914 | r = -errno; | |
936f6bdb FB |
1915 | goto finish; |
1916 | } | |
a8d88783 | 1917 | |
936f6bdb | 1918 | FOREACH_DIRENT_ALL(de, d, q = -errno; goto finish) { |
936f6bdb | 1919 | int de_fd; |
a8d88783 | 1920 | |
936f6bdb FB |
1921 | if (dot_or_dot_dot(de->d_name)) |
1922 | continue; | |
1923 | ||
1924 | de_fd = openat(fd, de->d_name, O_NOFOLLOW|O_CLOEXEC|O_PATH); | |
9d874aec LP |
1925 | if (de_fd < 0) |
1926 | q = log_error_errno(errno, "Failed to open() file '%s': %m", de->d_name); | |
4dc7bfdf FB |
1927 | else { |
1928 | _cleanup_free_ char *de_path = NULL; | |
1929 | ||
62a85ee0 | 1930 | de_path = path_join(path, de->d_name); |
4dc7bfdf FB |
1931 | if (!de_path) |
1932 | q = log_oom(); | |
1933 | else | |
1934 | /* Pass ownership of dirent fd over */ | |
1935 | q = item_do(i, de_fd, de_path, action); | |
1936 | } | |
a8d88783 | 1937 | |
e73a03e0 LP |
1938 | if (q < 0 && r == 0) |
1939 | r = q; | |
a8d88783 | 1940 | } |
a8d88783 | 1941 | } |
936f6bdb FB |
1942 | finish: |
1943 | safe_close(fd); | |
e73a03e0 | 1944 | return r; |
a8d88783 MS |
1945 | } |
1946 | ||
936f6bdb | 1947 | static int glob_item(Item *i, action_t action) { |
df99a9ef | 1948 | _cleanup_globfree_ glob_t g = { |
ebf31a1f | 1949 | .gl_opendir = (void *(*)(const char *)) opendir_nomod, |
df99a9ef | 1950 | }; |
e73a03e0 | 1951 | int r = 0, k; |
99e68c0b MS |
1952 | char **fn; |
1953 | ||
84e72b5e ZJS |
1954 | k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g); |
1955 | if (k < 0 && k != -ENOENT) | |
1956 | return log_error_errno(k, "glob(%s) failed: %m", i->path); | |
99e68c0b | 1957 | |
c84a9488 ZJS |
1958 | STRV_FOREACH(fn, g.gl_pathv) { |
1959 | k = action(i, *fn); | |
e73a03e0 | 1960 | if (k < 0 && r == 0) |
99e68c0b | 1961 | r = k; |
936f6bdb FB |
1962 | } |
1963 | ||
1964 | return r; | |
1965 | } | |
081043cf | 1966 | |
936f6bdb FB |
1967 | static int glob_item_recursively(Item *i, fdaction_t action) { |
1968 | _cleanup_globfree_ glob_t g = { | |
1969 | .gl_opendir = (void *(*)(const char *)) opendir_nomod, | |
1970 | }; | |
1971 | int r = 0, k; | |
1972 | char **fn; | |
1973 | ||
1974 | k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g); | |
1975 | if (k < 0 && k != -ENOENT) | |
1976 | return log_error_errno(k, "glob(%s) failed: %m", i->path); | |
1977 | ||
1978 | STRV_FOREACH(fn, g.gl_pathv) { | |
1979 | _cleanup_close_ int fd = -1; | |
936f6bdb FB |
1980 | |
1981 | /* Make sure we won't trigger/follow file object (such as | |
1982 | * device nodes, automounts, ...) pointed out by 'fn' with | |
1983 | * O_PATH. Note, when O_PATH is used, flags other than | |
1984 | * O_CLOEXEC, O_DIRECTORY, and O_NOFOLLOW are ignored. */ | |
1985 | ||
1986 | fd = open(*fn, O_CLOEXEC|O_NOFOLLOW|O_PATH); | |
1987 | if (fd < 0) { | |
09f12798 LP |
1988 | log_error_errno(errno, "Opening '%s' failed: %m", *fn); |
1989 | if (r == 0) | |
1990 | r = -errno; | |
936f6bdb FB |
1991 | continue; |
1992 | } | |
1993 | ||
9d874aec | 1994 | k = item_do(i, fd, *fn, action); |
936f6bdb FB |
1995 | if (k < 0 && r == 0) |
1996 | r = k; | |
1997 | ||
1998 | /* we passed fd ownership to the previous call */ | |
1999 | fd = -1; | |
c84a9488 | 2000 | } |
99e68c0b | 2001 | |
99e68c0b MS |
2002 | return r; |
2003 | } | |
2004 | ||
3b63d2d3 | 2005 | static int create_item(Item *i) { |
294929f8 | 2006 | CreationMode creation; |
a2fc2f8d | 2007 | int r = 0; |
5008d581 | 2008 | |
3b63d2d3 | 2009 | assert(i); |
5008d581 | 2010 | |
582deb84 ZJS |
2011 | log_debug("Running create action for entry %c %s", (char) i->type, i->path); |
2012 | ||
3b63d2d3 LP |
2013 | switch (i->type) { |
2014 | ||
2015 | case IGNORE_PATH: | |
78a92a5a | 2016 | case IGNORE_DIRECTORY_PATH: |
3b63d2d3 LP |
2017 | case REMOVE_PATH: |
2018 | case RECURSIVE_REMOVE_PATH: | |
2019 | return 0; | |
5008d581 | 2020 | |
eccebf4b | 2021 | case TRUNCATE_FILE: |
3b63d2d3 | 2022 | case CREATE_FILE: |
7fa10748 LP |
2023 | RUN_WITH_UMASK(0000) |
2024 | (void) mkdir_parents_label(i->path, 0755); | |
2025 | ||
eccebf4b ZS |
2026 | if ((i->type == CREATE_FILE && i->append_or_force) || i->type == TRUNCATE_FILE) |
2027 | r = truncate_file(i, i->path); | |
2028 | else | |
2029 | r = create_file(i, i->path); | |
5ec9d065 | 2030 | |
5ec9d065 FB |
2031 | if (r < 0) |
2032 | return r; | |
2033 | break; | |
2034 | ||
7b887f22 | 2035 | case COPY_FILES: |
7fa10748 LP |
2036 | RUN_WITH_UMASK(0000) |
2037 | (void) mkdir_parents_label(i->path, 0755); | |
2038 | ||
b1f7b17f | 2039 | r = copy_files(i); |
849958d1 LP |
2040 | if (r < 0) |
2041 | return r; | |
849958d1 LP |
2042 | break; |
2043 | ||
d4e9eb91 | 2044 | case WRITE_FILE: |
936f6bdb | 2045 | r = glob_item(i, write_one_file); |
f05bc3f7 MS |
2046 | if (r < 0) |
2047 | return r; | |
5008d581 | 2048 | |
3b63d2d3 LP |
2049 | break; |
2050 | ||
3b63d2d3 | 2051 | case CREATE_DIRECTORY: |
d7b8eec7 | 2052 | case TRUNCATE_DIRECTORY: |
4c39d899 FB |
2053 | RUN_WITH_UMASK(0000) |
2054 | (void) mkdir_parents_label(i->path, 0755); | |
2055 | ||
2056 | r = create_directory(i, i->path); | |
2057 | if (r < 0) | |
2058 | return r; | |
2059 | break; | |
2060 | ||
d7b8eec7 | 2061 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
2062 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
2063 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
d7b8eec7 | 2064 | RUN_WITH_UMASK(0000) |
7fa10748 | 2065 | (void) mkdir_parents_label(i->path, 0755); |
d7b8eec7 | 2066 | |
4c39d899 | 2067 | r = create_subvolume(i, i->path); |
4ad36844 FB |
2068 | if (r < 0) |
2069 | return r; | |
2070 | break; | |
5fb13eb5 | 2071 | |
df8dee85 | 2072 | case EMPTY_DIRECTORY: |
54946021 | 2073 | r = glob_item(i, empty_directory); |
f05bc3f7 MS |
2074 | if (r < 0) |
2075 | return r; | |
3b63d2d3 | 2076 | break; |
ee17ee7c LP |
2077 | |
2078 | case CREATE_FIFO: | |
a2fc2f8d | 2079 | RUN_WITH_UMASK(0000) |
7fa10748 LP |
2080 | (void) mkdir_parents_label(i->path, 0755); |
2081 | ||
a2fc2f8d | 2082 | r = create_fifo(i, i->path); |
f05bc3f7 MS |
2083 | if (r < 0) |
2084 | return r; | |
ee17ee7c | 2085 | break; |
a8d88783 | 2086 | |
5c5ccf12 | 2087 | case CREATE_SYMLINK: { |
7fa10748 LP |
2088 | RUN_WITH_UMASK(0000) |
2089 | (void) mkdir_parents_label(i->path, 0755); | |
2090 | ||
ecabcf8b | 2091 | mac_selinux_create_file_prepare(i->path, S_IFLNK); |
4cef1923 | 2092 | r = symlink(i->argument, i->path); |
ecabcf8b | 2093 | mac_selinux_create_file_clear(); |
e9a5ef7c | 2094 | |
468d726b | 2095 | if (r < 0) { |
2e78fa79 | 2096 | _cleanup_free_ char *x = NULL; |
468d726b | 2097 | |
4a62c710 | 2098 | if (errno != EEXIST) |
4cef1923 | 2099 | return log_error_errno(errno, "symlink(%s, %s) failed: %m", i->argument, i->path); |
2e78fa79 LP |
2100 | |
2101 | r = readlink_malloc(i->path, &x); | |
4cef1923 | 2102 | if (r < 0 || !streq(i->argument, x)) { |
2e78fa79 | 2103 | |
c55ac248 | 2104 | if (i->append_or_force) { |
ecabcf8b | 2105 | mac_selinux_create_file_prepare(i->path, S_IFLNK); |
4cef1923 | 2106 | r = symlink_atomic(i->argument, i->path); |
ecabcf8b | 2107 | mac_selinux_create_file_clear(); |
2e78fa79 | 2108 | |
2ef5de1b | 2109 | if (IN_SET(r, -EISDIR, -EEXIST, -ENOTEMPTY)) { |
b3f5897f WD |
2110 | r = rm_rf(i->path, REMOVE_ROOT|REMOVE_PHYSICAL); |
2111 | if (r < 0) | |
2112 | return log_error_errno(r, "rm -fr %s failed: %m", i->path); | |
2113 | ||
2114 | mac_selinux_create_file_prepare(i->path, S_IFLNK); | |
4cef1923 | 2115 | r = symlink(i->argument, i->path) < 0 ? -errno : 0; |
b3f5897f WD |
2116 | mac_selinux_create_file_clear(); |
2117 | } | |
f647962d | 2118 | if (r < 0) |
4cef1923 | 2119 | return log_error_errno(r, "symlink(%s, %s) failed: %m", i->argument, i->path); |
a542c4dc | 2120 | |
294929f8 | 2121 | creation = CREATION_FORCE; |
1554afae | 2122 | } else { |
582deb84 | 2123 | log_debug("\"%s\" is not a symlink or does not point to the correct path.", i->path); |
1554afae LP |
2124 | return 0; |
2125 | } | |
294929f8 ZJS |
2126 | } else |
2127 | creation = CREATION_EXISTING; | |
2128 | } else | |
a542c4dc | 2129 | |
294929f8 | 2130 | creation = CREATION_NORMAL; |
7a7d5db7 | 2131 | log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation), i->path); |
468d726b | 2132 | break; |
5c5ccf12 | 2133 | } |
468d726b LP |
2134 | |
2135 | case CREATE_BLOCK_DEVICE: | |
074bd73f | 2136 | case CREATE_CHAR_DEVICE: |
cb7ed9df | 2137 | if (have_effective_cap(CAP_MKNOD) == 0) { |
713998cf LP |
2138 | /* In a container we lack CAP_MKNOD. We shouldn't attempt to create the device node in that |
2139 | * case to avoid noise, and we don't support virtualized devices in containers anyway. */ | |
cb7ed9df LP |
2140 | |
2141 | log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path); | |
2142 | return 0; | |
2143 | } | |
2144 | ||
7fa10748 LP |
2145 | RUN_WITH_UMASK(0000) |
2146 | (void) mkdir_parents_label(i->path, 0755); | |
2147 | ||
074bd73f | 2148 | r = create_device(i, i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR); |
468d726b LP |
2149 | if (r < 0) |
2150 | return r; | |
2151 | ||
2152 | break; | |
468d726b | 2153 | |
e73a03e0 | 2154 | case ADJUST_MODE: |
777b87e7 | 2155 | case RELABEL_PATH: |
936f6bdb | 2156 | r = glob_item(i, path_set_perms); |
777b87e7 | 2157 | if (r < 0) |
96ca8194 | 2158 | return r; |
777b87e7 MS |
2159 | break; |
2160 | ||
a8d88783 | 2161 | case RECURSIVE_RELABEL_PATH: |
936f6bdb | 2162 | r = glob_item_recursively(i, fd_set_perms); |
a8d88783 MS |
2163 | if (r < 0) |
2164 | return r; | |
ebf4e801 | 2165 | break; |
e73a03e0 | 2166 | |
ebf4e801 | 2167 | case SET_XATTR: |
936f6bdb | 2168 | r = glob_item(i, path_set_xattrs); |
b705ab6a ZJS |
2169 | if (r < 0) |
2170 | return r; | |
2171 | break; | |
2172 | ||
2173 | case RECURSIVE_SET_XATTR: | |
936f6bdb | 2174 | r = glob_item_recursively(i, fd_set_xattrs); |
ebf4e801 MW |
2175 | if (r < 0) |
2176 | return r; | |
e73a03e0 | 2177 | break; |
f8eeeaf9 ZJS |
2178 | |
2179 | case SET_ACL: | |
936f6bdb | 2180 | r = glob_item(i, path_set_acls); |
f8eeeaf9 ZJS |
2181 | if (r < 0) |
2182 | return r; | |
b705ab6a ZJS |
2183 | break; |
2184 | ||
2185 | case RECURSIVE_SET_ACL: | |
936f6bdb | 2186 | r = glob_item_recursively(i, fd_set_acls); |
b705ab6a ZJS |
2187 | if (r < 0) |
2188 | return r; | |
2189 | break; | |
22c3a6ca | 2190 | |
88ec4dfa | 2191 | case SET_ATTRIBUTE: |
936f6bdb | 2192 | r = glob_item(i, path_set_attribute); |
22c3a6ca GB |
2193 | if (r < 0) |
2194 | return r; | |
2195 | break; | |
2196 | ||
88ec4dfa | 2197 | case RECURSIVE_SET_ATTRIBUTE: |
936f6bdb | 2198 | r = glob_item_recursively(i, fd_set_attribute); |
22c3a6ca GB |
2199 | if (r < 0) |
2200 | return r; | |
2201 | break; | |
3b63d2d3 LP |
2202 | } |
2203 | ||
f05bc3f7 | 2204 | return 0; |
3b63d2d3 LP |
2205 | } |
2206 | ||
a0896123 | 2207 | static int remove_item_instance(Item *i, const char *instance) { |
3b63d2d3 LP |
2208 | int r; |
2209 | ||
2210 | assert(i); | |
2211 | ||
2212 | switch (i->type) { | |
2213 | ||
3b63d2d3 | 2214 | case REMOVE_PATH: |
4a62c710 | 2215 | if (remove(instance) < 0 && errno != ENOENT) |
3f93da98 | 2216 | return log_error_errno(errno, "rm(%s): %m", instance); |
3b63d2d3 LP |
2217 | |
2218 | break; | |
2219 | ||
3b63d2d3 | 2220 | case RECURSIVE_REMOVE_PATH: |
2c575977 | 2221 | /* FIXME: we probably should use dir_cleanup() here instead of rm_rf() so that 'x' is honoured. */ |
582deb84 | 2222 | log_debug("rm -rf \"%s\"", instance); |
2c575977 | 2223 | r = rm_rf(instance, REMOVE_ROOT|REMOVE_SUBVOLUME|REMOVE_PHYSICAL); |
f647962d MS |
2224 | if (r < 0 && r != -ENOENT) |
2225 | return log_error_errno(r, "rm_rf(%s): %m", instance); | |
3b63d2d3 LP |
2226 | |
2227 | break; | |
7fcb4b9b ZJS |
2228 | |
2229 | default: | |
2230 | assert_not_reached("wut?"); | |
3b63d2d3 LP |
2231 | } |
2232 | ||
2233 | return 0; | |
2234 | } | |
2235 | ||
a0896123 | 2236 | static int remove_item(Item *i) { |
2c575977 LP |
2237 | int r; |
2238 | ||
b8bb3e8f LP |
2239 | assert(i); |
2240 | ||
582deb84 ZJS |
2241 | log_debug("Running remove action for entry %c %s", (char) i->type, i->path); |
2242 | ||
b8bb3e8f LP |
2243 | switch (i->type) { |
2244 | ||
b8bb3e8f | 2245 | case TRUNCATE_DIRECTORY: |
2c575977 LP |
2246 | /* FIXME: we probably should use dir_cleanup() here instead of rm_rf() so that 'x' is honoured. */ |
2247 | log_debug("rm -rf \"%s\"", i->path); | |
2248 | r = rm_rf(i->path, REMOVE_PHYSICAL); | |
2249 | if (r < 0 && r != -ENOENT) | |
2250 | return log_error_errno(r, "rm_rf(%s): %m", i->path); | |
2251 | ||
2252 | return 0; | |
2253 | ||
2254 | case REMOVE_PATH: | |
99e68c0b | 2255 | case RECURSIVE_REMOVE_PATH: |
936f6bdb | 2256 | return glob_item(i, remove_item_instance); |
b8bb3e8f | 2257 | |
df8dee85 ZJS |
2258 | default: |
2259 | return 0; | |
2260 | } | |
b8bb3e8f LP |
2261 | } |
2262 | ||
78a92a5a | 2263 | static int clean_item_instance(Item *i, const char* instance) { |
ddb439b8 | 2264 | char timestamp[FORMAT_TIMESTAMP_MAX]; |
7fd1b19b | 2265 | _cleanup_closedir_ DIR *d = NULL; |
7cd296c2 | 2266 | STRUCT_STATX_DEFINE(sx); |
ca194a2a | 2267 | int mountpoint, r; |
78a92a5a | 2268 | usec_t cutoff, n; |
ddb439b8 | 2269 | |
78a92a5a MS |
2270 | assert(i); |
2271 | ||
2272 | if (!i->age_set) | |
2273 | return 0; | |
2274 | ||
2275 | n = now(CLOCK_REALTIME); | |
2276 | if (n < i->age) | |
2277 | return 0; | |
2278 | ||
2279 | cutoff = n - i->age; | |
2280 | ||
df99a9ef | 2281 | d = opendir_nomod(instance); |
78a92a5a | 2282 | if (!d) { |
d710aaf7 | 2283 | if (IN_SET(errno, ENOENT, ENOTDIR)) { |
582deb84 | 2284 | log_debug_errno(errno, "Directory \"%s\": %m", instance); |
78a92a5a | 2285 | return 0; |
582deb84 | 2286 | } |
78a92a5a | 2287 | |
d710aaf7 | 2288 | return log_error_errno(errno, "Failed to open directory %s: %m", instance); |
78a92a5a MS |
2289 | } |
2290 | ||
ca194a2a LP |
2291 | r = statx_fallback(dirfd(d), "", AT_EMPTY_PATH, STATX_MODE|STATX_INO|STATX_ATIME|STATX_MTIME, &sx); |
2292 | if (r < 0) | |
2293 | return log_error_errno(r, "statx(%s) failed: %m", instance); | |
ddb439b8 | 2294 | |
ca194a2a LP |
2295 | if (FLAGS_SET(sx.stx_attributes_mask, STATX_ATTR_MOUNT_ROOT)) |
2296 | mountpoint = FLAGS_SET(sx.stx_attributes, STATX_ATTR_MOUNT_ROOT); | |
2297 | else { | |
ddb439b8 | 2298 | struct stat ps; |
78a92a5a | 2299 | |
ddb439b8 LP |
2300 | if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) |
2301 | return log_error_errno(errno, "stat(%s/..) failed: %m", i->path); | |
78a92a5a | 2302 | |
ddb439b8 | 2303 | mountpoint = |
ca194a2a LP |
2304 | sx.stx_dev_major != major(ps.st_dev) || |
2305 | sx.stx_dev_minor != minor(ps.st_dev) || | |
2306 | sx.stx_ino != ps.st_ino; | |
ddb439b8 | 2307 | } |
78a92a5a | 2308 | |
582deb84 ZJS |
2309 | log_debug("Cleanup threshold for %s \"%s\" is %s", |
2310 | mountpoint ? "mount point" : "directory", | |
2311 | instance, | |
7b3eb5c9 | 2312 | format_timestamp_style(timestamp, sizeof(timestamp), cutoff, TIMESTAMP_US)); |
582deb84 | 2313 | |
ddb439b8 | 2314 | return dir_cleanup(i, instance, d, |
ca194a2a LP |
2315 | load_statx_timestamp_nsec(&sx.stx_atime), |
2316 | load_statx_timestamp_nsec(&sx.stx_mtime), | |
2317 | cutoff * NSEC_PER_USEC, | |
2318 | sx.stx_dev_major, sx.stx_dev_minor, mountpoint, | |
582deb84 | 2319 | MAX_DEPTH, i->keep_first_level); |
78a92a5a MS |
2320 | } |
2321 | ||
2322 | static int clean_item(Item *i) { | |
78a92a5a MS |
2323 | assert(i); |
2324 | ||
582deb84 ZJS |
2325 | log_debug("Running clean action for entry %c %s", (char) i->type, i->path); |
2326 | ||
78a92a5a MS |
2327 | switch (i->type) { |
2328 | case CREATE_DIRECTORY: | |
d7b8eec7 | 2329 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
2330 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
2331 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
78a92a5a MS |
2332 | case TRUNCATE_DIRECTORY: |
2333 | case IGNORE_PATH: | |
849958d1 | 2334 | case COPY_FILES: |
78a92a5a | 2335 | clean_item_instance(i, i->path); |
df8dee85 | 2336 | return 0; |
65241c14 | 2337 | case EMPTY_DIRECTORY: |
78a92a5a | 2338 | case IGNORE_DIRECTORY_PATH: |
936f6bdb | 2339 | return glob_item(i, clean_item_instance); |
78a92a5a | 2340 | default: |
df8dee85 | 2341 | return 0; |
78a92a5a | 2342 | } |
78a92a5a MS |
2343 | } |
2344 | ||
599ebe29 | 2345 | static int process_item(Item *i, OperationMask operation) { |
811a1587 LP |
2346 | OperationMask todo; |
2347 | int r, q, p; | |
3b63d2d3 LP |
2348 | |
2349 | assert(i); | |
2350 | ||
811a1587 LP |
2351 | todo = operation & ~i->done; |
2352 | if (todo == 0) /* Everything already done? */ | |
1910cd0e LP |
2353 | return 0; |
2354 | ||
811a1587 | 2355 | i->done |= operation; |
1910cd0e | 2356 | |
a5648b80 | 2357 | r = chase_symlinks(i->path, arg_root, CHASE_NO_AUTOFS|CHASE_WARN, NULL, NULL); |
21af3386 | 2358 | if (r == -EREMOTE) { |
145b8d0f | 2359 | log_notice_errno(r, "Skipping %s", i->path); |
811a1587 | 2360 | return 0; |
145b8d0f FB |
2361 | } |
2362 | if (r < 0) | |
48d96904 | 2363 | log_debug_errno(r, "Failed to determine whether '%s' is below autofs, ignoring: %m", i->path); |
655f2da0 | 2364 | |
599ebe29 | 2365 | r = FLAGS_SET(operation, OPERATION_CREATE) ? create_item(i) : 0; |
6d7b5433 WD |
2366 | /* Failure can only be tolerated for create */ |
2367 | if (i->allow_failure) | |
2368 | r = 0; | |
3b63d2d3 | 2369 | |
599ebe29 LP |
2370 | q = FLAGS_SET(operation, OPERATION_REMOVE) ? remove_item(i) : 0; |
2371 | p = FLAGS_SET(operation, OPERATION_CLEAN) ? clean_item(i) : 0; | |
1a967b6b | 2372 | |
811a1587 | 2373 | return r < 0 ? r : |
1db50423 ZJS |
2374 | q < 0 ? q : |
2375 | p; | |
3b63d2d3 LP |
2376 | } |
2377 | ||
599ebe29 | 2378 | static int process_item_array(ItemArray *array, OperationMask operation) { |
96d10d78 LP |
2379 | int r = 0; |
2380 | size_t n; | |
753615e8 | 2381 | |
3f93da98 ZJS |
2382 | assert(array); |
2383 | ||
811a1587 LP |
2384 | /* Create any parent first. */ |
2385 | if (FLAGS_SET(operation, OPERATION_CREATE) && array->parent) | |
2386 | r = process_item_array(array->parent, operation & OPERATION_CREATE); | |
2387 | ||
2388 | /* Clean up all children first */ | |
2389 | if ((operation & (OPERATION_REMOVE|OPERATION_CLEAN)) && !set_isempty(array->children)) { | |
811a1587 LP |
2390 | ItemArray *c; |
2391 | ||
90e74a66 | 2392 | SET_FOREACH(c, array->children) { |
811a1587 LP |
2393 | int k; |
2394 | ||
2395 | k = process_item_array(c, operation & (OPERATION_REMOVE|OPERATION_CLEAN)); | |
2396 | if (k < 0 && r == 0) | |
2397 | r = k; | |
2398 | } | |
2399 | } | |
2400 | ||
96d10d78 LP |
2401 | for (n = 0; n < array->n_items; n++) { |
2402 | int k; | |
2403 | ||
599ebe29 | 2404 | k = process_item(array->items + n, operation); |
3f93da98 ZJS |
2405 | if (k < 0 && r == 0) |
2406 | r = k; | |
2407 | } | |
2408 | ||
2409 | return r; | |
2410 | } | |
3b63d2d3 | 2411 | |
3f93da98 ZJS |
2412 | static void item_free_contents(Item *i) { |
2413 | assert(i); | |
3b63d2d3 | 2414 | free(i->path); |
468d726b | 2415 | free(i->argument); |
ebf4e801 | 2416 | strv_free(i->xattrs); |
f8eeeaf9 | 2417 | |
349cc4a5 | 2418 | #if HAVE_ACL |
f8eeeaf9 ZJS |
2419 | acl_free(i->acl_access); |
2420 | acl_free(i->acl_default); | |
2421 | #endif | |
3b63d2d3 LP |
2422 | } |
2423 | ||
87938c3b | 2424 | static ItemArray* item_array_free(ItemArray *a) { |
96d10d78 | 2425 | size_t n; |
3f93da98 ZJS |
2426 | |
2427 | if (!a) | |
87938c3b | 2428 | return NULL; |
3f93da98 | 2429 | |
96d10d78 | 2430 | for (n = 0; n < a->n_items; n++) |
3f93da98 | 2431 | item_free_contents(a->items + n); |
96d10d78 | 2432 | |
811a1587 | 2433 | set_free(a->children); |
3f93da98 | 2434 | free(a->items); |
87938c3b | 2435 | return mfree(a); |
3f93da98 | 2436 | } |
e2f2fb78 | 2437 | |
93bab288 | 2438 | static int item_compare(const Item *a, const Item *b) { |
17493fa5 LP |
2439 | /* Make sure that the ownership taking item is put first, so |
2440 | * that we first create the node, and then can adjust it */ | |
2441 | ||
93bab288 | 2442 | if (takes_ownership(a->type) && !takes_ownership(b->type)) |
17493fa5 | 2443 | return -1; |
93bab288 | 2444 | if (!takes_ownership(a->type) && takes_ownership(b->type)) |
17493fa5 LP |
2445 | return 1; |
2446 | ||
93bab288 | 2447 | return CMP(a->type, b->type); |
17493fa5 LP |
2448 | } |
2449 | ||
3f93da98 | 2450 | static bool item_compatible(Item *a, Item *b) { |
bfe95f35 LP |
2451 | assert(a); |
2452 | assert(b); | |
3f93da98 | 2453 | assert(streq(a->path, b->path)); |
bfe95f35 | 2454 | |
3f93da98 ZJS |
2455 | if (takes_ownership(a->type) && takes_ownership(b->type)) |
2456 | /* check if the items are the same */ | |
2457 | return streq_ptr(a->argument, b->argument) && | |
bfe95f35 | 2458 | |
3f93da98 ZJS |
2459 | a->uid_set == b->uid_set && |
2460 | a->uid == b->uid && | |
bfe95f35 | 2461 | |
3f93da98 ZJS |
2462 | a->gid_set == b->gid_set && |
2463 | a->gid == b->gid && | |
bfe95f35 | 2464 | |
3f93da98 ZJS |
2465 | a->mode_set == b->mode_set && |
2466 | a->mode == b->mode && | |
bfe95f35 | 2467 | |
3f93da98 ZJS |
2468 | a->age_set == b->age_set && |
2469 | a->age == b->age && | |
bfe95f35 | 2470 | |
3f93da98 | 2471 | a->mask_perms == b->mask_perms && |
bfe95f35 | 2472 | |
3f93da98 | 2473 | a->keep_first_level == b->keep_first_level && |
468d726b | 2474 | |
3f93da98 | 2475 | a->major_minor == b->major_minor; |
468d726b | 2476 | |
bfe95f35 LP |
2477 | return true; |
2478 | } | |
2479 | ||
a2aced4a DR |
2480 | static bool should_include_path(const char *path) { |
2481 | char **prefix; | |
2482 | ||
abef3f91 | 2483 | STRV_FOREACH(prefix, arg_exclude_prefixes) |
582deb84 ZJS |
2484 | if (path_startswith(path, *prefix)) { |
2485 | log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.", | |
2486 | path, *prefix); | |
5c795114 | 2487 | return false; |
582deb84 | 2488 | } |
a2aced4a | 2489 | |
abef3f91 | 2490 | STRV_FOREACH(prefix, arg_include_prefixes) |
582deb84 ZJS |
2491 | if (path_startswith(path, *prefix)) { |
2492 | log_debug("Entry \"%s\" matches include prefix \"%s\".", path, *prefix); | |
a2aced4a | 2493 | return true; |
582deb84 | 2494 | } |
a2aced4a | 2495 | |
6b000af4 | 2496 | /* no matches, so we should include this path only if we have no allow list at all */ |
7b943bb7 | 2497 | if (strv_isempty(arg_include_prefixes)) |
582deb84 ZJS |
2498 | return true; |
2499 | ||
2500 | log_debug("Entry \"%s\" does not match any include prefix, skipping.", path); | |
2501 | return false; | |
a2aced4a DR |
2502 | } |
2503 | ||
4cef1923 FB |
2504 | static int specifier_expansion_from_arg(Item *i) { |
2505 | _cleanup_free_ char *unescaped = NULL, *resolved = NULL; | |
2506 | char **xattr; | |
2507 | int r; | |
2508 | ||
2509 | assert(i); | |
2510 | ||
4e361acc | 2511 | if (!i->argument) |
4cef1923 FB |
2512 | return 0; |
2513 | ||
2514 | switch (i->type) { | |
2515 | case COPY_FILES: | |
2516 | case CREATE_SYMLINK: | |
2517 | case CREATE_FILE: | |
2518 | case TRUNCATE_FILE: | |
2519 | case WRITE_FILE: | |
2520 | r = cunescape(i->argument, 0, &unescaped); | |
2521 | if (r < 0) | |
2522 | return log_error_errno(r, "Failed to unescape parameter to write: %s", i->argument); | |
2523 | ||
06536492 | 2524 | r = specifier_printf(unescaped, PATH_MAX-1, specifier_table, NULL, &resolved); |
4cef1923 FB |
2525 | if (r < 0) |
2526 | return r; | |
2527 | ||
2528 | free_and_replace(i->argument, resolved); | |
2529 | break; | |
2530 | ||
2531 | case SET_XATTR: | |
2532 | case RECURSIVE_SET_XATTR: | |
dfe01841 | 2533 | STRV_FOREACH(xattr, i->xattrs) { |
06536492 | 2534 | r = specifier_printf(*xattr, SIZE_MAX, specifier_table, NULL, &resolved); |
4cef1923 FB |
2535 | if (r < 0) |
2536 | return r; | |
2537 | ||
2538 | free_and_replace(*xattr, resolved); | |
2539 | } | |
2540 | break; | |
2541 | ||
2542 | default: | |
2543 | break; | |
2544 | } | |
2545 | return 0; | |
2546 | } | |
2547 | ||
a2d1fb88 LP |
2548 | static int patch_var_run(const char *fname, unsigned line, char **path) { |
2549 | const char *k; | |
2550 | char *n; | |
2551 | ||
2552 | assert(path); | |
2553 | assert(*path); | |
2554 | ||
2555 | /* Optionally rewrites lines referencing /var/run/, to use /run/ instead. Why bother? tmpfiles merges lines in | |
2556 | * some cases and detects conflicts in others. If files/directories are specified through two equivalent lines | |
2557 | * this is problematic as neither case will be detected. Ideally we'd detect these cases by resolving symlinks | |
2558 | * early, but that's precisely not what we can do here as this code very likely is running very early on, at a | |
2559 | * time where the paths in question are not available yet, or even more importantly, our own tmpfiles rules | |
2560 | * might create the paths that are intermediary to the listed paths. We can't really cover the generic case, | |
2561 | * but the least we can do is cover the specific case of /var/run vs. /run, as /var/run is a legacy name for | |
2562 | * /run only, and we explicitly document that and require that on systemd systems the former is a symlink to | |
2563 | * the latter. Moreover files below this path are by far the primary usecase for tmpfiles.d/. */ | |
2564 | ||
2565 | k = path_startswith(*path, "/var/run/"); | |
2566 | if (isempty(k)) /* Don't complain about other paths than /var/run, and not about /var/run itself either. */ | |
2567 | return 0; | |
2568 | ||
2d9b74ba | 2569 | n = path_join("/run", k); |
a2d1fb88 LP |
2570 | if (!n) |
2571 | return log_oom(); | |
2572 | ||
2573 | /* Also log about this briefly. We do so at LOG_NOTICE level, as we fixed up the situation automatically, hence | |
2574 | * there's no immediate need for action by the user. However, in the interest of making things less confusing | |
2575 | * to the user, let's still inform the user that these snippets should really be updated. */ | |
b88ba6c7 ZJS |
2576 | log_syntax(NULL, LOG_NOTICE, fname, line, 0, |
2577 | "Line references path below legacy directory /var/run/, updating %s → %s; please update the tmpfiles.d/ drop-in file accordingly.", | |
2578 | *path, n); | |
a2d1fb88 | 2579 | |
81fa4479 | 2580 | free_and_replace(*path, n); |
a2d1fb88 LP |
2581 | |
2582 | return 0; | |
2583 | } | |
2584 | ||
a3451c2c LP |
2585 | static int find_uid(const char *user, uid_t *ret_uid, Hashmap **cache) { |
2586 | int r; | |
2587 | ||
2588 | assert(user); | |
2589 | assert(ret_uid); | |
2590 | ||
2591 | /* First: parse as numeric UID string */ | |
2592 | r = parse_uid(user, ret_uid); | |
2593 | if (r >= 0) | |
2594 | return r; | |
2595 | ||
2596 | /* Second: pass to NSS if we are running "online" */ | |
2597 | if (!arg_root) | |
2598 | return get_user_creds(&user, ret_uid, NULL, NULL, NULL, 0); | |
2599 | ||
2600 | /* Third, synthesize "root" unconditionally */ | |
2601 | if (streq(user, "root")) { | |
2602 | *ret_uid = 0; | |
2603 | return 0; | |
2604 | } | |
2605 | ||
2606 | /* Fourth: use fgetpwent() to read /etc/passwd directly, if we are "offline" */ | |
2607 | return name_to_uid_offline(arg_root, user, ret_uid, cache); | |
2608 | } | |
2609 | ||
2610 | static int find_gid(const char *group, gid_t *ret_gid, Hashmap **cache) { | |
2611 | int r; | |
2612 | ||
2613 | assert(group); | |
2614 | assert(ret_gid); | |
2615 | ||
2616 | /* First: parse as numeric GID string */ | |
2617 | r = parse_gid(group, ret_gid); | |
2618 | if (r >= 0) | |
2619 | return r; | |
2620 | ||
2621 | /* Second: pass to NSS if we are running "online" */ | |
2622 | if (!arg_root) | |
2623 | return get_group_creds(&group, ret_gid, 0); | |
2624 | ||
2625 | /* Third, synthesize "root" unconditionally */ | |
2626 | if (streq(group, "root")) { | |
2627 | *ret_gid = 0; | |
2628 | return 0; | |
2629 | } | |
2630 | ||
2631 | /* Fourth: use fgetgrent() to read /etc/group directly, if we are "offline" */ | |
2632 | return name_to_gid_offline(arg_root, group, ret_gid, cache); | |
2633 | } | |
2634 | ||
2635 | static int parse_line( | |
2636 | const char *fname, | |
2637 | unsigned line, | |
2638 | const char *buffer, | |
2639 | bool *invalid_config, | |
2640 | Hashmap **uid_cache, | |
2641 | Hashmap **gid_cache) { | |
1731e34a | 2642 | |
cde684a2 | 2643 | _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL; |
3f93da98 ZJS |
2644 | _cleanup_(item_free_contents) Item i = {}; |
2645 | ItemArray *existing; | |
ef43a391 | 2646 | OrderedHashmap *h; |
657cf7f4 | 2647 | int r, pos; |
c55ac248 | 2648 | bool append_or_force = false, boot = false, allow_failure = false; |
3b63d2d3 LP |
2649 | |
2650 | assert(fname); | |
2651 | assert(line >= 1); | |
2652 | assert(buffer); | |
2653 | ||
68685607 | 2654 | r = extract_many_words( |
4034a06d | 2655 | &buffer, |
68685607 | 2656 | NULL, |
4ec85141 | 2657 | EXTRACT_UNQUOTE, |
4034a06d LP |
2658 | &action, |
2659 | &path, | |
2660 | &mode, | |
2661 | &user, | |
2662 | &group, | |
2663 | &age, | |
2664 | NULL); | |
d9daae55 | 2665 | if (r < 0) { |
751223fe ZJS |
2666 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
2667 | /* invalid quoting and such or an unknown specifier */ | |
d9daae55 | 2668 | *invalid_config = true; |
d02933fd | 2669 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to parse line: %m"); |
4b93699d | 2670 | } else if (r < 2) { |
d9daae55 | 2671 | *invalid_config = true; |
d02933fd | 2672 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Syntax error."); |
5008d581 LP |
2673 | } |
2674 | ||
e7b88b7b | 2675 | if (!empty_or_dash(buffer)) { |
4034a06d LP |
2676 | i.argument = strdup(buffer); |
2677 | if (!i.argument) | |
2678 | return log_oom(); | |
2679 | } | |
2680 | ||
2e78fa79 | 2681 | if (isempty(action)) { |
d9daae55 | 2682 | *invalid_config = true; |
d02933fd | 2683 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Command too short '%s'.", action); |
2e78fa79 LP |
2684 | } |
2685 | ||
5f255144 ZJS |
2686 | for (pos = 1; action[pos]; pos++) { |
2687 | if (action[pos] == '!' && !boot) | |
2688 | boot = true; | |
c55ac248 ZS |
2689 | else if (action[pos] == '+' && !append_or_force) |
2690 | append_or_force = true; | |
6d7b5433 WD |
2691 | else if (action[pos] == '-' && !allow_failure) |
2692 | allow_failure = true; | |
5f255144 | 2693 | else { |
d9daae55 | 2694 | *invalid_config = true; |
d02933fd | 2695 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Unknown modifiers in command '%s'", action); |
5f255144 | 2696 | } |
2e78fa79 LP |
2697 | } |
2698 | ||
582deb84 | 2699 | if (boot && !arg_boot) { |
d02933fd | 2700 | log_syntax(NULL, LOG_DEBUG, fname, line, 0, "Ignoring entry %s \"%s\" because --boot is not specified.", action, path); |
c4708f13 | 2701 | return 0; |
582deb84 | 2702 | } |
c4708f13 | 2703 | |
3f93da98 | 2704 | i.type = action[0]; |
c55ac248 | 2705 | i.append_or_force = append_or_force; |
6d7b5433 | 2706 | i.allow_failure = allow_failure; |
2e78fa79 | 2707 | |
06536492 | 2708 | r = specifier_printf(path, PATH_MAX-1, specifier_table, NULL, &i.path); |
5a8575ef | 2709 | if (r == -ENXIO) |
4cef1923 | 2710 | return log_unresolvable_specifier(fname, line); |
d9daae55 | 2711 | if (r < 0) { |
751223fe ZJS |
2712 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
2713 | *invalid_config = true; | |
d02933fd | 2714 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to replace specifiers in '%s': %m", path); |
d9daae55 | 2715 | } |
1731e34a | 2716 | |
a2d1fb88 LP |
2717 | r = patch_var_run(fname, line, &i.path); |
2718 | if (r < 0) | |
2719 | return r; | |
2720 | ||
3f93da98 | 2721 | switch (i.type) { |
468d726b | 2722 | |
777b87e7 | 2723 | case CREATE_DIRECTORY: |
d7b8eec7 | 2724 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
2725 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
2726 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
df8dee85 | 2727 | case EMPTY_DIRECTORY: |
777b87e7 MS |
2728 | case TRUNCATE_DIRECTORY: |
2729 | case CREATE_FIFO: | |
2730 | case IGNORE_PATH: | |
78a92a5a | 2731 | case IGNORE_DIRECTORY_PATH: |
777b87e7 MS |
2732 | case REMOVE_PATH: |
2733 | case RECURSIVE_REMOVE_PATH: | |
e73a03e0 | 2734 | case ADJUST_MODE: |
777b87e7 MS |
2735 | case RELABEL_PATH: |
2736 | case RECURSIVE_RELABEL_PATH: | |
c82500c6 | 2737 | if (i.argument) |
d02933fd | 2738 | log_syntax(NULL, LOG_WARNING, fname, line, 0, "%c lines don't take argument fields, ignoring.", i.type); |
c82500c6 LP |
2739 | |
2740 | break; | |
2741 | ||
2742 | case CREATE_FILE: | |
2743 | case TRUNCATE_FILE: | |
777b87e7 | 2744 | break; |
468d726b LP |
2745 | |
2746 | case CREATE_SYMLINK: | |
3f93da98 | 2747 | if (!i.argument) { |
b910cc72 | 2748 | i.argument = path_join("/usr/share/factory", i.path); |
3f93da98 | 2749 | if (!i.argument) |
2f3b873a | 2750 | return log_oom(); |
468d726b LP |
2751 | } |
2752 | break; | |
2753 | ||
31ed59c5 | 2754 | case WRITE_FILE: |
3f93da98 | 2755 | if (!i.argument) { |
d9daae55 | 2756 | *invalid_config = true; |
d02933fd | 2757 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Write file requires argument."); |
31ed59c5 LP |
2758 | } |
2759 | break; | |
2760 | ||
849958d1 | 2761 | case COPY_FILES: |
3f93da98 | 2762 | if (!i.argument) { |
7dc6477d | 2763 | i.argument = path_join("/usr/share/factory", i.path); |
3f93da98 | 2764 | if (!i.argument) |
2f3b873a | 2765 | return log_oom(); |
626f8d16 | 2766 | |
3f93da98 | 2767 | } else if (!path_is_absolute(i.argument)) { |
d9daae55 | 2768 | *invalid_config = true; |
d02933fd | 2769 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Source path '%s' is not absolute.", i.argument); |
626f8d16 | 2770 | |
7dc6477d LP |
2771 | } |
2772 | ||
2773 | if (!empty_or_root(arg_root)) { | |
626f8d16 ZJS |
2774 | char *p; |
2775 | ||
d34cd571 | 2776 | p = path_join(arg_root, i.argument); |
626f8d16 ZJS |
2777 | if (!p) |
2778 | return log_oom(); | |
2779 | free_and_replace(i.argument, p); | |
849958d1 LP |
2780 | } |
2781 | ||
858d36c1 | 2782 | path_simplify(i.argument, false); |
849958d1 LP |
2783 | break; |
2784 | ||
468d726b | 2785 | case CREATE_CHAR_DEVICE: |
3a47c40d | 2786 | case CREATE_BLOCK_DEVICE: |
3f93da98 | 2787 | if (!i.argument) { |
d9daae55 | 2788 | *invalid_config = true; |
d02933fd | 2789 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Device file requires argument."); |
468d726b LP |
2790 | } |
2791 | ||
3a47c40d LP |
2792 | r = parse_dev(i.argument, &i.major_minor); |
2793 | if (r < 0) { | |
d9daae55 | 2794 | *invalid_config = true; |
d02933fd | 2795 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Can't parse device file major/minor '%s'.", i.argument); |
468d726b LP |
2796 | } |
2797 | ||
468d726b | 2798 | break; |
468d726b | 2799 | |
ebf4e801 | 2800 | case SET_XATTR: |
b705ab6a | 2801 | case RECURSIVE_SET_XATTR: |
3f93da98 | 2802 | if (!i.argument) { |
d9daae55 | 2803 | *invalid_config = true; |
d02933fd LP |
2804 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
2805 | "Set extended attribute requires argument."); | |
ebf4e801 | 2806 | } |
bd550f78 | 2807 | r = parse_xattrs_from_arg(&i); |
ebf4e801 MW |
2808 | if (r < 0) |
2809 | return r; | |
2810 | break; | |
2811 | ||
f8eeeaf9 | 2812 | case SET_ACL: |
b705ab6a | 2813 | case RECURSIVE_SET_ACL: |
f8eeeaf9 | 2814 | if (!i.argument) { |
d9daae55 | 2815 | *invalid_config = true; |
d02933fd LP |
2816 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
2817 | "Set ACLs requires argument."); | |
f8eeeaf9 | 2818 | } |
bd550f78 | 2819 | r = parse_acls_from_arg(&i); |
f8eeeaf9 ZJS |
2820 | if (r < 0) |
2821 | return r; | |
2822 | break; | |
2823 | ||
88ec4dfa LP |
2824 | case SET_ATTRIBUTE: |
2825 | case RECURSIVE_SET_ATTRIBUTE: | |
22c3a6ca | 2826 | if (!i.argument) { |
d9daae55 | 2827 | *invalid_config = true; |
d02933fd LP |
2828 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
2829 | "Set file attribute requires argument."); | |
22c3a6ca | 2830 | } |
bd550f78 | 2831 | r = parse_attribute_from_arg(&i); |
751223fe | 2832 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
d9daae55 | 2833 | *invalid_config = true; |
22c3a6ca GB |
2834 | if (r < 0) |
2835 | return r; | |
2836 | break; | |
2837 | ||
777b87e7 | 2838 | default: |
d9daae55 | 2839 | *invalid_config = true; |
d02933fd LP |
2840 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
2841 | "Unknown command type '%c'.", (char) i.type); | |
3b63d2d3 | 2842 | } |
468d726b | 2843 | |
3f93da98 | 2844 | if (!path_is_absolute(i.path)) { |
d9daae55 | 2845 | *invalid_config = true; |
d02933fd LP |
2846 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
2847 | "Path '%s' not absolute.", i.path); | |
3b63d2d3 LP |
2848 | } |
2849 | ||
858d36c1 | 2850 | path_simplify(i.path, false); |
3b63d2d3 | 2851 | |
3f93da98 | 2852 | if (!should_include_path(i.path)) |
7f2c1f4d | 2853 | return 0; |
5008d581 | 2854 | |
4cef1923 | 2855 | r = specifier_expansion_from_arg(&i); |
5a8575ef | 2856 | if (r == -ENXIO) |
4cef1923 | 2857 | return log_unresolvable_specifier(fname, line); |
751223fe ZJS |
2858 | if (r < 0) { |
2859 | if (IN_SET(r, -EINVAL, -EBADSLT)) | |
2860 | *invalid_config = true; | |
d02933fd | 2861 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to substitute specifiers in argument: %m"); |
751223fe | 2862 | } |
4cef1923 | 2863 | |
7dc6477d | 2864 | if (!empty_or_root(arg_root)) { |
cde684a2 LP |
2865 | char *p; |
2866 | ||
c6134d3e | 2867 | p = path_join(arg_root, i.path); |
cf9a4abd MM |
2868 | if (!p) |
2869 | return log_oom(); | |
81fa4479 | 2870 | free_and_replace(i.path, p); |
cf9a4abd MM |
2871 | } |
2872 | ||
e7b88b7b | 2873 | if (!empty_or_dash(user)) { |
a3451c2c | 2874 | r = find_uid(user, &i.uid, uid_cache); |
4b67834e | 2875 | if (r < 0) { |
d9daae55 | 2876 | *invalid_config = true; |
d02933fd | 2877 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to resolve user '%s': %m", user); |
3b63d2d3 LP |
2878 | } |
2879 | ||
3f93da98 | 2880 | i.uid_set = true; |
3b63d2d3 LP |
2881 | } |
2882 | ||
e7b88b7b | 2883 | if (!empty_or_dash(group)) { |
a3451c2c | 2884 | r = find_gid(group, &i.gid, gid_cache); |
4b67834e | 2885 | if (r < 0) { |
d9daae55 | 2886 | *invalid_config = true; |
d02933fd | 2887 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to resolve group '%s'.", group); |
3b63d2d3 LP |
2888 | } |
2889 | ||
3f93da98 | 2890 | i.gid_set = true; |
3b63d2d3 LP |
2891 | } |
2892 | ||
e7b88b7b | 2893 | if (!empty_or_dash(mode)) { |
abef3f91 | 2894 | const char *mm = mode; |
3b63d2d3 LP |
2895 | unsigned m; |
2896 | ||
abef3f91 | 2897 | if (*mm == '~') { |
3f93da98 | 2898 | i.mask_perms = true; |
abef3f91 LP |
2899 | mm++; |
2900 | } | |
2901 | ||
d02933fd LP |
2902 | r = parse_mode(mm, &m); |
2903 | if (r < 0) { | |
d9daae55 | 2904 | *invalid_config = true; |
d02933fd | 2905 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Invalid mode '%s'.", mode); |
3b63d2d3 LP |
2906 | } |
2907 | ||
3f93da98 ZJS |
2908 | i.mode = m; |
2909 | i.mode_set = true; | |
3b63d2d3 | 2910 | } else |
5fb13eb5 | 2911 | i.mode = IN_SET(i.type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA) ? 0755 : 0644; |
3b63d2d3 | 2912 | |
e7b88b7b | 2913 | if (!empty_or_dash(age)) { |
24f3a374 LP |
2914 | const char *a = age; |
2915 | ||
2916 | if (*a == '~') { | |
3f93da98 | 2917 | i.keep_first_level = true; |
24f3a374 LP |
2918 | a++; |
2919 | } | |
2920 | ||
d02933fd LP |
2921 | r = parse_sec(a, &i.age); |
2922 | if (r < 0) { | |
d9daae55 | 2923 | *invalid_config = true; |
d02933fd | 2924 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Invalid age '%s'.", age); |
3b63d2d3 LP |
2925 | } |
2926 | ||
3f93da98 | 2927 | i.age_set = true; |
3b63d2d3 LP |
2928 | } |
2929 | ||
3f93da98 | 2930 | h = needs_glob(i.type) ? globs : items; |
bfe95f35 | 2931 | |
ef43a391 | 2932 | existing = ordered_hashmap_get(h, i.path); |
468d726b | 2933 | if (existing) { |
96d10d78 | 2934 | size_t n; |
3f93da98 | 2935 | |
96d10d78 | 2936 | for (n = 0; n < existing->n_items; n++) { |
d0ea5c5e | 2937 | if (!item_compatible(existing->items + n, &i) && !i.append_or_force) { |
d02933fd | 2938 | log_syntax(NULL, LOG_NOTICE, fname, line, 0, "Duplicate line for path \"%s\", ignoring.", i.path); |
6487ada8 MP |
2939 | return 0; |
2940 | } | |
ebf4e801 MW |
2941 | } |
2942 | } else { | |
3f93da98 | 2943 | existing = new0(ItemArray, 1); |
07982ed1 LP |
2944 | if (!existing) |
2945 | return log_oom(); | |
2946 | ||
ef43a391 | 2947 | r = ordered_hashmap_put(h, i.path, existing); |
ccd114f0 LP |
2948 | if (r < 0) { |
2949 | free(existing); | |
3f93da98 | 2950 | return log_oom(); |
ccd114f0 | 2951 | } |
bfe95f35 LP |
2952 | } |
2953 | ||
319a4f4b | 2954 | if (!GREEDY_REALLOC(existing->items, existing->n_items + 1)) |
3f93da98 | 2955 | return log_oom(); |
5008d581 | 2956 | |
7ab7529d LP |
2957 | existing->items[existing->n_items++] = i; |
2958 | i = (struct Item) {}; | |
dd449aca ZJS |
2959 | |
2960 | /* Sort item array, to enforce stable ordering of application */ | |
96d10d78 | 2961 | typesafe_qsort(existing->items, existing->n_items, item_compare); |
17493fa5 | 2962 | |
7f2c1f4d | 2963 | return 0; |
5008d581 LP |
2964 | } |
2965 | ||
ceaaeb9b ZJS |
2966 | static int cat_config(char **config_dirs, char **args) { |
2967 | _cleanup_strv_free_ char **files = NULL; | |
2968 | int r; | |
2969 | ||
2970 | r = conf_files_list_with_replacement(arg_root, config_dirs, arg_replace, &files, NULL); | |
2971 | if (r < 0) | |
2972 | return r; | |
2973 | ||
2974 | return cat_files(NULL, files, 0); | |
2975 | } | |
2976 | ||
dd04fb32 LP |
2977 | static int exclude_default_prefixes(void) { |
2978 | int r; | |
2979 | ||
2980 | /* Provide an easy way to exclude virtual/memory file systems from what we do here. Useful in | |
2981 | * combination with --root= where we probably don't want to apply stuff to these dirs as they are | |
2982 | * likely over-mounted if the root directory is actually used, and it wouldbe less than ideal to have | |
2983 | * all kinds of files created/adjusted underneath these mount points. */ | |
2984 | ||
2985 | r = strv_extend_strv( | |
2986 | &arg_exclude_prefixes, | |
2987 | STRV_MAKE("/dev", | |
2988 | "/proc", | |
2989 | "/run", | |
2990 | "/sys"), | |
2991 | true); | |
2992 | if (r < 0) | |
2993 | return log_oom(); | |
2994 | ||
2995 | return 0; | |
2996 | } | |
2997 | ||
37ec0fdd LP |
2998 | static int help(void) { |
2999 | _cleanup_free_ char *link = NULL; | |
3000 | int r; | |
3001 | ||
3002 | r = terminal_urlify_man("systemd-tmpfiles", "8", &link); | |
3003 | if (r < 0) | |
3004 | return log_oom(); | |
3005 | ||
3f532a59 LP |
3006 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n" |
3007 | "\n%sCreates, deletes and cleans up volatile and temporary files and directories.%s\n\n" | |
5c795114 | 3008 | " -h --help Show this help\n" |
f2b5ca0e | 3009 | " --user Execute user configuration\n" |
eb9da376 | 3010 | " --version Show package version\n" |
ceaaeb9b | 3011 | " --cat-config Show configuration files\n" |
5c795114 DR |
3012 | " --create Create marked files/directories\n" |
3013 | " --clean Clean up marked directories\n" | |
3014 | " --remove Remove marked files/directories\n" | |
81815651 | 3015 | " --boot Execute actions only safe at boot\n" |
79ca888f ZJS |
3016 | " --prefix=PATH Only apply rules with the specified prefix\n" |
3017 | " --exclude-prefix=PATH Ignore rules with the specified prefix\n" | |
dd04fb32 | 3018 | " -E Ignore rules prefixed with /dev, /proc, /run, /sys\n" |
d9daae55 | 3019 | " --root=PATH Operate on an alternate filesystem root\n" |
63d3d0a5 | 3020 | " --image=PATH Operate on disk image as filesystem root\n" |
a6d8474f | 3021 | " --replace=PATH Treat arguments as replacement for PATH\n" |
dcd5c891 | 3022 | " --no-pager Do not pipe output into a pager\n" |
bc556335 DDM |
3023 | "\nSee the %s for details.\n", |
3024 | program_invocation_short_name, | |
3025 | ansi_highlight(), | |
3026 | ansi_normal(), | |
3027 | link); | |
37ec0fdd LP |
3028 | |
3029 | return 0; | |
3b63d2d3 LP |
3030 | } |
3031 | ||
3032 | static int parse_argv(int argc, char *argv[]) { | |
3033 | ||
3034 | enum { | |
eb9da376 | 3035 | ARG_VERSION = 0x100, |
ceaaeb9b | 3036 | ARG_CAT_CONFIG, |
f2b5ca0e | 3037 | ARG_USER, |
3b63d2d3 LP |
3038 | ARG_CREATE, |
3039 | ARG_CLEAN, | |
fba6e687 | 3040 | ARG_REMOVE, |
81815651 | 3041 | ARG_BOOT, |
5c795114 DR |
3042 | ARG_PREFIX, |
3043 | ARG_EXCLUDE_PREFIX, | |
cf9a4abd | 3044 | ARG_ROOT, |
63d3d0a5 | 3045 | ARG_IMAGE, |
a6d8474f | 3046 | ARG_REPLACE, |
dcd5c891 | 3047 | ARG_NO_PAGER, |
3b63d2d3 LP |
3048 | }; |
3049 | ||
3050 | static const struct option options[] = { | |
5c795114 | 3051 | { "help", no_argument, NULL, 'h' }, |
f2b5ca0e | 3052 | { "user", no_argument, NULL, ARG_USER }, |
eb9da376 | 3053 | { "version", no_argument, NULL, ARG_VERSION }, |
ceaaeb9b | 3054 | { "cat-config", no_argument, NULL, ARG_CAT_CONFIG }, |
5c795114 DR |
3055 | { "create", no_argument, NULL, ARG_CREATE }, |
3056 | { "clean", no_argument, NULL, ARG_CLEAN }, | |
3057 | { "remove", no_argument, NULL, ARG_REMOVE }, | |
81815651 | 3058 | { "boot", no_argument, NULL, ARG_BOOT }, |
5c795114 DR |
3059 | { "prefix", required_argument, NULL, ARG_PREFIX }, |
3060 | { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX }, | |
cf9a4abd | 3061 | { "root", required_argument, NULL, ARG_ROOT }, |
63d3d0a5 | 3062 | { "image", required_argument, NULL, ARG_IMAGE }, |
a6d8474f | 3063 | { "replace", required_argument, NULL, ARG_REPLACE }, |
dcd5c891 | 3064 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, |
eb9da376 | 3065 | {} |
3b63d2d3 LP |
3066 | }; |
3067 | ||
0f474365 | 3068 | int c, r; |
3b63d2d3 LP |
3069 | |
3070 | assert(argc >= 0); | |
3071 | assert(argv); | |
3072 | ||
dd04fb32 | 3073 | while ((c = getopt_long(argc, argv, "hE", options, NULL)) >= 0) |
3b63d2d3 LP |
3074 | |
3075 | switch (c) { | |
3076 | ||
3077 | case 'h': | |
37ec0fdd | 3078 | return help(); |
eb9da376 LP |
3079 | |
3080 | case ARG_VERSION: | |
3f6fd1ba | 3081 | return version(); |
3b63d2d3 | 3082 | |
ceaaeb9b ZJS |
3083 | case ARG_CAT_CONFIG: |
3084 | arg_cat_config = true; | |
3085 | break; | |
3086 | ||
f2b5ca0e ZJS |
3087 | case ARG_USER: |
3088 | arg_user = true; | |
3089 | break; | |
3090 | ||
3b63d2d3 | 3091 | case ARG_CREATE: |
1a967b6b | 3092 | arg_operation |= OPERATION_CREATE; |
3b63d2d3 LP |
3093 | break; |
3094 | ||
3095 | case ARG_CLEAN: | |
1a967b6b | 3096 | arg_operation |= OPERATION_CLEAN; |
3b63d2d3 LP |
3097 | break; |
3098 | ||
3099 | case ARG_REMOVE: | |
1a967b6b | 3100 | arg_operation |= OPERATION_REMOVE; |
3b63d2d3 LP |
3101 | break; |
3102 | ||
81815651 ZJS |
3103 | case ARG_BOOT: |
3104 | arg_boot = true; | |
c4708f13 ZJS |
3105 | break; |
3106 | ||
fba6e687 | 3107 | case ARG_PREFIX: |
7bc040fa | 3108 | if (strv_push(&arg_include_prefixes, optarg) < 0) |
a2aced4a | 3109 | return log_oom(); |
fba6e687 LP |
3110 | break; |
3111 | ||
5c795114 | 3112 | case ARG_EXCLUDE_PREFIX: |
7bc040fa | 3113 | if (strv_push(&arg_exclude_prefixes, optarg) < 0) |
5c795114 DR |
3114 | return log_oom(); |
3115 | break; | |
3116 | ||
63d3d0a5 | 3117 | case ARG_ROOT: |
614b022c | 3118 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root); |
dd04fb32 LP |
3119 | if (r < 0) |
3120 | return r; | |
dd04fb32 LP |
3121 | break; |
3122 | ||
63d3d0a5 | 3123 | case ARG_IMAGE: |
3537577c ZJS |
3124 | #ifdef STANDALONE |
3125 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3126 | "This systemd-tmpfiles version is compiled without support for --image=."); | |
3127 | #else | |
614b022c | 3128 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); |
63d3d0a5 LP |
3129 | if (r < 0) |
3130 | return r; | |
3537577c ZJS |
3131 | #endif |
3132 | /* Imply -E here since it makes little sense to create files persistently in the /run mountpoint of a disk image */ | |
63d3d0a5 LP |
3133 | _fallthrough_; |
3134 | ||
3135 | case 'E': | |
3136 | r = exclude_default_prefixes(); | |
0f474365 | 3137 | if (r < 0) |
0f03c2a4 | 3138 | return r; |
63d3d0a5 | 3139 | |
cf9a4abd MM |
3140 | break; |
3141 | ||
a6d8474f ZJS |
3142 | case ARG_REPLACE: |
3143 | if (!path_is_absolute(optarg) || | |
baaa35ad ZJS |
3144 | !endswith(optarg, ".conf")) |
3145 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3146 | "The argument to --replace= must an absolute path to a config file"); | |
a6d8474f ZJS |
3147 | |
3148 | arg_replace = optarg; | |
3149 | break; | |
3150 | ||
dcd5c891 | 3151 | case ARG_NO_PAGER: |
0221d68a | 3152 | arg_pager_flags |= PAGER_DISABLE; |
dcd5c891 LP |
3153 | break; |
3154 | ||
3b63d2d3 LP |
3155 | case '?': |
3156 | return -EINVAL; | |
3157 | ||
3158 | default: | |
eb9da376 | 3159 | assert_not_reached("Unhandled option"); |
3b63d2d3 | 3160 | } |
3b63d2d3 | 3161 | |
baaa35ad ZJS |
3162 | if (arg_operation == 0 && !arg_cat_config) |
3163 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3164 | "You need to specify at least one of --clean, --create or --remove."); | |
3b63d2d3 | 3165 | |
baaa35ad ZJS |
3166 | if (arg_replace && arg_cat_config) |
3167 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3168 | "Option --replace= is not supported with --cat-config"); | |
ceaaeb9b | 3169 | |
baaa35ad ZJS |
3170 | if (arg_replace && optind >= argc) |
3171 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3172 | "When --replace= is given, some configuration items must be specified"); | |
a6d8474f | 3173 | |
b63aacaa LP |
3174 | if (arg_root && arg_user) |
3175 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3176 | "Combination of --user and --root= is not supported."); | |
3177 | ||
63d3d0a5 LP |
3178 | if (arg_image && arg_root) |
3179 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported."); | |
3180 | ||
3b63d2d3 LP |
3181 | return 1; |
3182 | } | |
3183 | ||
a6d8474f | 3184 | static int read_config_file(char **config_dirs, const char *fn, bool ignore_enoent, bool *invalid_config) { |
a3451c2c | 3185 | _cleanup_(hashmap_freep) Hashmap *uid_cache = NULL, *gid_cache = NULL; |
f7ac1ed2 | 3186 | _cleanup_fclose_ FILE *_f = NULL; |
2708160c | 3187 | _cleanup_free_ char *pp = NULL; |
1731e34a | 3188 | unsigned v = 0; |
2a98ae4a | 3189 | FILE *f; |
bec890e3 | 3190 | ItemArray *ia; |
4e68ec18 | 3191 | int r = 0; |
fba6e687 LP |
3192 | |
3193 | assert(fn); | |
3194 | ||
f7ac1ed2 | 3195 | if (streq(fn, "-")) { |
a6d8474f | 3196 | log_debug("Reading config from stdin…"); |
f7ac1ed2 ZJS |
3197 | fn = "<stdin>"; |
3198 | f = stdin; | |
3199 | } else { | |
2708160c | 3200 | r = search_and_fopen(fn, "re", arg_root, (const char**) config_dirs, &_f, &pp); |
f7ac1ed2 ZJS |
3201 | if (r < 0) { |
3202 | if (ignore_enoent && r == -ENOENT) { | |
3203 | log_debug_errno(r, "Failed to open \"%s\", ignoring: %m", fn); | |
3204 | return 0; | |
3205 | } | |
fba6e687 | 3206 | |
f7ac1ed2 ZJS |
3207 | return log_error_errno(r, "Failed to open '%s': %m", fn); |
3208 | } | |
2708160c LP |
3209 | |
3210 | log_debug("Reading config file \"%s\"…", pp); | |
3211 | fn = pp; | |
f7ac1ed2 | 3212 | f = _f; |
fba6e687 LP |
3213 | } |
3214 | ||
2a98ae4a LP |
3215 | for (;;) { |
3216 | _cleanup_free_ char *line = NULL; | |
3217 | bool invalid_line = false; | |
1731e34a | 3218 | char *l; |
fba6e687 | 3219 | int k; |
2a98ae4a LP |
3220 | |
3221 | k = read_line(f, LONG_LINE_MAX, &line); | |
3222 | if (k < 0) | |
3223 | return log_error_errno(k, "Failed to read '%s': %m", fn); | |
3224 | if (k == 0) | |
3225 | break; | |
fba6e687 | 3226 | |
fba6e687 LP |
3227 | v++; |
3228 | ||
3229 | l = strstrip(line); | |
4c701096 | 3230 | if (IN_SET(*l, 0, '#')) |
fba6e687 LP |
3231 | continue; |
3232 | ||
a3451c2c | 3233 | k = parse_line(fn, v, l, &invalid_line, &uid_cache, &gid_cache); |
d9daae55 ZJS |
3234 | if (k < 0) { |
3235 | if (invalid_line) | |
3236 | /* Allow reporting with a special code if the caller requested this */ | |
3237 | *invalid_config = true; | |
3238 | else if (r == 0) | |
3239 | /* The first error becomes our return value */ | |
3240 | r = k; | |
3241 | } | |
fba6e687 LP |
3242 | } |
3243 | ||
78a92a5a | 3244 | /* we have to determine age parameter for each entry of type X */ |
bec890e3 MM |
3245 | ORDERED_HASHMAP_FOREACH(ia, globs) |
3246 | for (size_t ni = 0; ni < ia->n_items; ni++) { | |
3247 | ItemArray *ja; | |
3248 | Item *i = ia->items + ni, *candidate_item = NULL; | |
78a92a5a | 3249 | |
bec890e3 | 3250 | if (i->type != IGNORE_DIRECTORY_PATH) |
78a92a5a MS |
3251 | continue; |
3252 | ||
bec890e3 MM |
3253 | ORDERED_HASHMAP_FOREACH(ja, items) |
3254 | for (size_t nj = 0; nj < ja->n_items; nj++) { | |
3255 | Item *j = ja->items + nj; | |
78a92a5a | 3256 | |
875e7b25 ZJS |
3257 | if (!IN_SET(j->type, CREATE_DIRECTORY, |
3258 | TRUNCATE_DIRECTORY, | |
3259 | CREATE_SUBVOLUME, | |
3260 | CREATE_SUBVOLUME_INHERIT_QUOTA, | |
3261 | CREATE_SUBVOLUME_NEW_QUOTA)) | |
bec890e3 | 3262 | continue; |
78a92a5a | 3263 | |
bec890e3 MM |
3264 | if (path_equal(j->path, i->path)) { |
3265 | candidate_item = j; | |
3266 | break; | |
3267 | } | |
3268 | ||
875e7b25 ZJS |
3269 | if (candidate_item |
3270 | ? (path_startswith(j->path, candidate_item->path) && fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0) | |
3271 | : path_startswith(i->path, j->path) != NULL) | |
bec890e3 MM |
3272 | candidate_item = j; |
3273 | } | |
3274 | ||
3275 | if (candidate_item && candidate_item->age_set) { | |
3276 | i->age = candidate_item->age; | |
3277 | i->age_set = true; | |
3278 | } | |
78a92a5a | 3279 | } |
78a92a5a | 3280 | |
fba6e687 | 3281 | if (ferror(f)) { |
56f64d95 | 3282 | log_error_errno(errno, "Failed to read from file %s: %m", fn); |
fba6e687 LP |
3283 | if (r == 0) |
3284 | r = -EIO; | |
3285 | } | |
3286 | ||
fba6e687 LP |
3287 | return r; |
3288 | } | |
3289 | ||
a6d8474f ZJS |
3290 | static int parse_arguments(char **config_dirs, char **args, bool *invalid_config) { |
3291 | char **arg; | |
3292 | int r; | |
3293 | ||
3294 | STRV_FOREACH(arg, args) { | |
3295 | r = read_config_file(config_dirs, *arg, false, invalid_config); | |
3296 | if (r < 0) | |
3297 | return r; | |
3298 | } | |
3299 | ||
3300 | return 0; | |
3301 | } | |
3302 | ||
3303 | static int read_config_files(char **config_dirs, char **args, bool *invalid_config) { | |
3304 | _cleanup_strv_free_ char **files = NULL; | |
3305 | _cleanup_free_ char *p = NULL; | |
3306 | char **f; | |
3307 | int r; | |
3308 | ||
ceaaeb9b | 3309 | r = conf_files_list_with_replacement(arg_root, config_dirs, arg_replace, &files, &p); |
a6d8474f | 3310 | if (r < 0) |
ceaaeb9b | 3311 | return r; |
a6d8474f ZJS |
3312 | |
3313 | STRV_FOREACH(f, files) | |
3314 | if (p && path_equal(*f, p)) { | |
3315 | log_debug("Parsing arguments at position \"%s\"…", *f); | |
3316 | ||
3317 | r = parse_arguments(config_dirs, args, invalid_config); | |
3318 | if (r < 0) | |
3319 | return r; | |
3320 | } else | |
3321 | /* Just warn, ignore result otherwise. | |
3322 | * read_config_file() has some debug output, so no need to print anything. */ | |
3323 | (void) read_config_file(config_dirs, *f, true, invalid_config); | |
3324 | ||
3325 | return 0; | |
3326 | } | |
3327 | ||
811a1587 LP |
3328 | static int link_parent(ItemArray *a) { |
3329 | const char *path; | |
3330 | char *prefix; | |
3331 | int r; | |
3332 | ||
3333 | assert(a); | |
3334 | ||
09f467ac | 3335 | /* Finds the closest "parent" item array for the specified item array. Then registers the specified item array |
811a1587 LP |
3336 | * as child of it, and fills the parent in, linking them both ways. This allows us to later create parents |
3337 | * before their children, and clean up/remove children before their parents. */ | |
3338 | ||
3339 | if (a->n_items <= 0) | |
3340 | return 0; | |
3341 | ||
3342 | path = a->items[0].path; | |
6e9417f5 | 3343 | prefix = newa(char, strlen(path) + 1); |
811a1587 LP |
3344 | PATH_FOREACH_PREFIX(prefix, path) { |
3345 | ItemArray *j; | |
3346 | ||
3347 | j = ordered_hashmap_get(items, prefix); | |
bd0ce244 LP |
3348 | if (!j) |
3349 | j = ordered_hashmap_get(globs, prefix); | |
811a1587 | 3350 | if (j) { |
de7fef4b | 3351 | r = set_ensure_put(&j->children, NULL, a); |
811a1587 LP |
3352 | if (r < 0) |
3353 | return log_oom(); | |
3354 | ||
3355 | a->parent = j; | |
3356 | return 1; | |
3357 | } | |
3358 | } | |
3359 | ||
3360 | return 0; | |
3361 | } | |
3362 | ||
87938c3b YW |
3363 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(item_array_hash_ops, char, string_hash_func, string_compare_func, |
3364 | ItemArray, item_array_free); | |
3365 | ||
3366 | static int run(int argc, char *argv[]) { | |
3537577c | 3367 | #ifndef STANDALONE |
63d3d0a5 LP |
3368 | _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; |
3369 | _cleanup_(decrypted_image_unrefp) DecryptedImage *decrypted_image = NULL; | |
3370 | _cleanup_(umount_and_rmdir_and_freep) char *unlink_dir = NULL; | |
3537577c | 3371 | #endif |
f2b5ca0e | 3372 | _cleanup_strv_free_ char **config_dirs = NULL; |
d9daae55 | 3373 | bool invalid_config = false; |
64adb379 | 3374 | ItemArray *a; |
44ac4f88 LP |
3375 | enum { |
3376 | PHASE_REMOVE_AND_CLEAN, | |
3377 | PHASE_CREATE, | |
3378 | _PHASE_MAX | |
3379 | } phase; | |
87938c3b | 3380 | int r, k; |
3b63d2d3 | 3381 | |
fdcad0c2 LP |
3382 | r = parse_argv(argc, argv); |
3383 | if (r <= 0) | |
87938c3b | 3384 | return r; |
5008d581 | 3385 | |
d2acb93d | 3386 | log_setup(); |
5008d581 | 3387 | |
01131684 LP |
3388 | /* We require /proc/ for a lot of our operations, i.e. for adjusting access modes, for anything |
3389 | * SELinux related, for recursive operation, for xattr, acl and chattr handling, for btrfs stuff and | |
3390 | * a lot more. It's probably the majority of invocations where /proc/ is required. Since people | |
3391 | * apparently invoke it without anyway and are surprised about the failures, let's catch this early | |
3392 | * and output a nice and friendly warning. */ | |
3393 | if (proc_mounted() == 0) | |
3394 | return log_error_errno(SYNTHETIC_ERRNO(ENOSYS), | |
3395 | "/proc/ is not mounted, but required for successful operation of systemd-tmpfiles. " | |
3396 | "Please mount /proc/. Alternatively, consider using the --root= or --image= switches."); | |
3397 | ||
e5358401 LP |
3398 | /* Descending down file system trees might take a lot of fds */ |
3399 | (void) rlimit_nofile_bump(HIGH_RLIMIT_NOFILE); | |
3400 | ||
f2b5ca0e ZJS |
3401 | if (arg_user) { |
3402 | r = user_config_paths(&config_dirs); | |
87938c3b YW |
3403 | if (r < 0) |
3404 | return log_error_errno(r, "Failed to initialize configuration directory list: %m"); | |
f2b5ca0e ZJS |
3405 | } else { |
3406 | config_dirs = strv_split_nulstr(CONF_PATHS_NULSTR("tmpfiles.d")); | |
87938c3b YW |
3407 | if (!config_dirs) |
3408 | return log_oom(); | |
f2b5ca0e ZJS |
3409 | } |
3410 | ||
79c91cec | 3411 | if (DEBUG_LOGGING) { |
f2b5ca0e | 3412 | _cleanup_free_ char *t = NULL; |
b8e35011 | 3413 | char **i; |
f2b5ca0e | 3414 | |
b8e35011 LP |
3415 | STRV_FOREACH(i, config_dirs) { |
3416 | _cleanup_free_ char *j = NULL; | |
3417 | ||
3418 | j = path_join(arg_root, *i); | |
3419 | if (!j) | |
3420 | return log_oom(); | |
3421 | ||
c2bc710b | 3422 | if (!strextend(&t, "\n\t", j)) |
b8e35011 LP |
3423 | return log_oom(); |
3424 | } | |
3425 | ||
3426 | log_debug("Looking for configuration files in (higher priority first):%s", t); | |
f2b5ca0e ZJS |
3427 | } |
3428 | ||
ceaaeb9b | 3429 | if (arg_cat_config) { |
0221d68a | 3430 | (void) pager_open(arg_pager_flags); |
dcd5c891 | 3431 | |
87938c3b | 3432 | return cat_config(config_dirs, argv + optind); |
ceaaeb9b ZJS |
3433 | } |
3434 | ||
3435 | umask(0022); | |
3436 | ||
a9ba0e32 CG |
3437 | r = mac_selinux_init(); |
3438 | if (r < 0) | |
3439 | return r; | |
ceaaeb9b | 3440 | |
3537577c | 3441 | #ifndef STANDALONE |
63d3d0a5 LP |
3442 | if (arg_image) { |
3443 | assert(!arg_root); | |
3444 | ||
3445 | r = mount_image_privately_interactively( | |
3446 | arg_image, | |
4b5de5dd LP |
3447 | DISSECT_IMAGE_GENERIC_ROOT | |
3448 | DISSECT_IMAGE_REQUIRE_ROOT | | |
3449 | DISSECT_IMAGE_VALIDATE_OS | | |
3450 | DISSECT_IMAGE_RELAX_VAR_CHECK | | |
c65f854a LP |
3451 | DISSECT_IMAGE_FSCK | |
3452 | DISSECT_IMAGE_GROWFS, | |
63d3d0a5 LP |
3453 | &unlink_dir, |
3454 | &loop_device, | |
3455 | &decrypted_image); | |
3456 | if (r < 0) | |
3457 | return r; | |
3458 | ||
3459 | arg_root = strdup(unlink_dir); | |
3460 | if (!arg_root) | |
3461 | return log_oom(); | |
3462 | } | |
3537577c ZJS |
3463 | #else |
3464 | assert(!arg_image); | |
3465 | #endif | |
63d3d0a5 | 3466 | |
87938c3b YW |
3467 | items = ordered_hashmap_new(&item_array_hash_ops); |
3468 | globs = ordered_hashmap_new(&item_array_hash_ops); | |
3469 | if (!items || !globs) | |
3470 | return log_oom(); | |
ceaaeb9b | 3471 | |
a6d8474f ZJS |
3472 | /* If command line arguments are specified along with --replace, read all |
3473 | * configuration files and insert the positional arguments at the specified | |
3474 | * place. Otherwise, if command line arguments are specified, execute just | |
3475 | * them, and finally, without --replace= or any positional arguments, just | |
3476 | * read configuration and execute it. | |
3477 | */ | |
3478 | if (arg_replace || optind >= argc) | |
3479 | r = read_config_files(config_dirs, argv + optind, &invalid_config); | |
3480 | else | |
3481 | r = parse_arguments(config_dirs, argv + optind, &invalid_config); | |
3482 | if (r < 0) | |
87938c3b | 3483 | return r; |
5008d581 | 3484 | |
811a1587 | 3485 | /* Let's now link up all child/parent relationships */ |
90e74a66 | 3486 | ORDERED_HASHMAP_FOREACH(a, items) { |
811a1587 LP |
3487 | r = link_parent(a); |
3488 | if (r < 0) | |
87938c3b | 3489 | return r; |
1db50423 | 3490 | } |
90e74a66 | 3491 | ORDERED_HASHMAP_FOREACH(a, globs) { |
811a1587 LP |
3492 | r = link_parent(a); |
3493 | if (r < 0) | |
87938c3b | 3494 | return r; |
811a1587 LP |
3495 | } |
3496 | ||
64adb379 LP |
3497 | /* If multiple operations are requested, let's first run the remove/clean operations, and only then the create |
3498 | * operations. i.e. that we first clean out the platform we then build on. */ | |
44ac4f88 | 3499 | for (phase = 0; phase < _PHASE_MAX; phase++) { |
64adb379 | 3500 | OperationMask op; |
b8bb3e8f | 3501 | |
44ac4f88 | 3502 | if (phase == PHASE_REMOVE_AND_CLEAN) |
64adb379 | 3503 | op = arg_operation & (OPERATION_REMOVE|OPERATION_CLEAN); |
44ac4f88 | 3504 | else if (phase == PHASE_CREATE) |
64adb379 LP |
3505 | op = arg_operation & OPERATION_CREATE; |
3506 | else | |
3507 | assert_not_reached("unexpected phase"); | |
3508 | ||
3509 | if (op == 0) /* Nothing requested in this phase */ | |
3510 | continue; | |
3511 | ||
3512 | /* The non-globbing ones usually create things, hence we apply them first */ | |
90e74a66 | 3513 | ORDERED_HASHMAP_FOREACH(a, items) { |
64adb379 | 3514 | k = process_item_array(a, op); |
87938c3b YW |
3515 | if (k < 0 && r >= 0) |
3516 | r = k; | |
64adb379 LP |
3517 | } |
3518 | ||
3519 | /* The globbing ones usually alter things, hence we apply them second. */ | |
90e74a66 | 3520 | ORDERED_HASHMAP_FOREACH(a, globs) { |
64adb379 | 3521 | k = process_item_array(a, op); |
87938c3b YW |
3522 | if (k < 0 && r >= 0) |
3523 | r = k; | |
64adb379 | 3524 | } |
1db50423 | 3525 | } |
3b63d2d3 | 3526 | |
95d2155a | 3527 | if (ERRNO_IS_RESOURCE(r)) |
87938c3b YW |
3528 | return r; |
3529 | if (invalid_config) | |
d9daae55 | 3530 | return EX_DATAERR; |
87938c3b | 3531 | if (r < 0) |
bb9947be | 3532 | return EX_CANTCREAT; |
87938c3b | 3533 | return 0; |
5008d581 | 3534 | } |
87938c3b YW |
3535 | |
3536 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |