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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 | 112 | |
7f7a50dd SK |
113 | typedef enum AgeBy { |
114 | AGE_BY_ATIME = 1 << 0, | |
115 | AGE_BY_BTIME = 1 << 1, | |
116 | AGE_BY_CTIME = 1 << 2, | |
117 | AGE_BY_MTIME = 1 << 3, | |
118 | ||
119 | /* All file timestamp types are checked by default. */ | |
120 | AGE_BY_DEFAULT_FILE = AGE_BY_ATIME | AGE_BY_BTIME | AGE_BY_CTIME | AGE_BY_MTIME, | |
121 | AGE_BY_DEFAULT_DIR = AGE_BY_ATIME | AGE_BY_BTIME | AGE_BY_MTIME | |
122 | } AgeBy; | |
123 | ||
3b63d2d3 | 124 | typedef struct Item { |
66ccd038 | 125 | ItemType type; |
3b63d2d3 LP |
126 | |
127 | char *path; | |
468d726b | 128 | char *argument; |
ebf4e801 | 129 | char **xattrs; |
349cc4a5 | 130 | #if HAVE_ACL |
f8eeeaf9 ZJS |
131 | acl_t acl_access; |
132 | acl_t acl_default; | |
133 | #endif | |
5008d581 LP |
134 | uid_t uid; |
135 | gid_t gid; | |
3b63d2d3 LP |
136 | mode_t mode; |
137 | usec_t age; | |
7f7a50dd | 138 | AgeBy age_by_file, age_by_dir; |
3b63d2d3 | 139 | |
468d726b | 140 | dev_t major_minor; |
88ec4dfa LP |
141 | unsigned attribute_value; |
142 | unsigned attribute_mask; | |
468d726b | 143 | |
3b63d2d3 LP |
144 | bool uid_set:1; |
145 | bool gid_set:1; | |
146 | bool mode_set:1; | |
147 | bool age_set:1; | |
abef3f91 | 148 | bool mask_perms:1; |
88ec4dfa | 149 | bool attribute_set:1; |
24f3a374 LP |
150 | |
151 | bool keep_first_level:1; | |
1910cd0e | 152 | |
c55ac248 | 153 | bool append_or_force:1; |
2e78fa79 | 154 | |
6d7b5433 WD |
155 | bool allow_failure:1; |
156 | ||
c46c3233 AW |
157 | bool try_replace:1; |
158 | ||
811a1587 | 159 | OperationMask done; |
3b63d2d3 LP |
160 | } Item; |
161 | ||
3f93da98 ZJS |
162 | typedef struct ItemArray { |
163 | Item *items; | |
96d10d78 | 164 | size_t n_items; |
811a1587 LP |
165 | |
166 | struct ItemArray *parent; | |
167 | Set *children; | |
3f93da98 ZJS |
168 | } ItemArray; |
169 | ||
5a8575ef | 170 | typedef enum DirectoryType { |
133bbca4 | 171 | DIRECTORY_RUNTIME, |
5a8575ef ZJS |
172 | DIRECTORY_STATE, |
173 | DIRECTORY_CACHE, | |
174 | DIRECTORY_LOGS, | |
175 | _DIRECTORY_TYPE_MAX, | |
176 | } DirectoryType; | |
177 | ||
ceaaeb9b | 178 | static bool arg_cat_config = false; |
f2b5ca0e | 179 | static bool arg_user = false; |
1a967b6b | 180 | static OperationMask arg_operation = 0; |
81815651 | 181 | static bool arg_boot = false; |
0221d68a | 182 | static PagerFlags arg_pager_flags = 0; |
3b63d2d3 | 183 | |
7bc040fa LP |
184 | static char **arg_include_prefixes = NULL; |
185 | static char **arg_exclude_prefixes = NULL; | |
cf9a4abd | 186 | static char *arg_root = NULL; |
63d3d0a5 | 187 | static char *arg_image = NULL; |
a6d8474f | 188 | static char *arg_replace = NULL; |
fba6e687 | 189 | |
3b63d2d3 LP |
190 | #define MAX_DEPTH 256 |
191 | ||
ef43a391 | 192 | static OrderedHashmap *items = NULL, *globs = NULL; |
7bc040fa LP |
193 | static Set *unix_sockets = NULL; |
194 | ||
87938c3b YW |
195 | STATIC_DESTRUCTOR_REGISTER(items, ordered_hashmap_freep); |
196 | STATIC_DESTRUCTOR_REGISTER(globs, ordered_hashmap_freep); | |
197 | STATIC_DESTRUCTOR_REGISTER(unix_sockets, set_free_freep); | |
198 | STATIC_DESTRUCTOR_REGISTER(arg_include_prefixes, freep); | |
199 | STATIC_DESTRUCTOR_REGISTER(arg_exclude_prefixes, freep); | |
200 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); | |
63d3d0a5 | 201 | STATIC_DESTRUCTOR_REGISTER(arg_image, freep); |
87938c3b | 202 | |
de61a04b LP |
203 | static int specifier_machine_id_safe(char specifier, const void *data, const char *root, const void *userdata, char **ret); |
204 | static int specifier_directory(char specifier, const void *data, const char *root, const void *userdata, char **ret); | |
4cef1923 | 205 | |
bd550f78 | 206 | static const Specifier specifier_table[] = { |
e93387f3 | 207 | { 'a', specifier_architecture, NULL }, |
5a8575ef | 208 | { 'b', specifier_boot_id, NULL }, |
e93387f3 | 209 | { 'B', specifier_os_build_id, NULL }, |
5a8575ef | 210 | { 'H', specifier_host_name, NULL }, |
e97708fa | 211 | { 'l', specifier_short_host_name, NULL }, |
e93387f3 | 212 | { 'm', specifier_machine_id_safe, NULL }, |
268f5a54 | 213 | { 'o', specifier_os_id, NULL }, |
e93387f3 | 214 | { 'v', specifier_kernel_release, NULL }, |
268f5a54 | 215 | { 'w', specifier_os_version_id, NULL }, |
268f5a54 | 216 | { 'W', specifier_os_variant_id, NULL }, |
5a8575ef | 217 | |
5a8575ef | 218 | { 'h', specifier_user_home, NULL }, |
b294e594 | 219 | |
5a8575ef ZJS |
220 | { 'C', specifier_directory, UINT_TO_PTR(DIRECTORY_CACHE) }, |
221 | { 'L', specifier_directory, UINT_TO_PTR(DIRECTORY_LOGS) }, | |
e93387f3 YW |
222 | { 'S', specifier_directory, UINT_TO_PTR(DIRECTORY_STATE) }, |
223 | { 't', specifier_directory, UINT_TO_PTR(DIRECTORY_RUNTIME) }, | |
224 | ||
225 | COMMON_CREDS_SPECIFIERS, | |
226 | ||
2824aa07 | 227 | COMMON_TMP_SPECIFIERS, |
bd550f78 LP |
228 | {} |
229 | }; | |
230 | ||
de61a04b | 231 | static int specifier_machine_id_safe(char specifier, const void *data, const char *root, const void *userdata, char **ret) { |
4cef1923 FB |
232 | int r; |
233 | ||
de61a04b LP |
234 | /* If /etc/machine_id is missing or empty (e.g. in a chroot environment) return a recognizable error |
235 | * so that the caller can skip the rule gracefully. */ | |
4cef1923 | 236 | |
de61a04b | 237 | r = specifier_machine_id(specifier, data, root, userdata, ret); |
d8dab757 | 238 | if (IN_SET(r, -ENOENT, -ENOMEDIUM)) |
5a8575ef | 239 | return -ENXIO; |
4cef1923 FB |
240 | |
241 | return r; | |
242 | } | |
243 | ||
de61a04b | 244 | static int specifier_directory(char specifier, const void *data, const char *root, const void *userdata, char **ret) { |
5a8575ef ZJS |
245 | struct table_entry { |
246 | uint64_t type; | |
247 | const char *suffix; | |
248 | }; | |
249 | ||
250 | static const struct table_entry paths_system[] = { | |
251 | [DIRECTORY_RUNTIME] = { SD_PATH_SYSTEM_RUNTIME }, | |
252 | [DIRECTORY_STATE] = { SD_PATH_SYSTEM_STATE_PRIVATE }, | |
253 | [DIRECTORY_CACHE] = { SD_PATH_SYSTEM_STATE_CACHE }, | |
254 | [DIRECTORY_LOGS] = { SD_PATH_SYSTEM_STATE_LOGS }, | |
255 | }; | |
256 | ||
257 | static const struct table_entry paths_user[] = { | |
258 | [DIRECTORY_RUNTIME] = { SD_PATH_USER_RUNTIME }, | |
259 | [DIRECTORY_STATE] = { SD_PATH_USER_CONFIGURATION }, | |
260 | [DIRECTORY_CACHE] = { SD_PATH_USER_STATE_CACHE }, | |
261 | [DIRECTORY_LOGS] = { SD_PATH_USER_CONFIGURATION, "log" }, | |
262 | }; | |
263 | ||
5a8575ef | 264 | const struct table_entry *paths; |
de61a04b LP |
265 | _cleanup_free_ char *p = NULL; |
266 | unsigned i; | |
267 | int r; | |
5a8575ef ZJS |
268 | |
269 | assert_cc(ELEMENTSOF(paths_system) == ELEMENTSOF(paths_user)); | |
270 | paths = arg_user ? paths_user : paths_system; | |
271 | ||
272 | i = PTR_TO_UINT(data); | |
273 | assert(i < ELEMENTSOF(paths_system)); | |
274 | ||
de61a04b LP |
275 | r = sd_path_lookup(paths[i].type, paths[i].suffix, &p); |
276 | if (r < 0) | |
277 | return r; | |
278 | ||
279 | if (arg_root) { | |
280 | _cleanup_free_ char *j = NULL; | |
281 | ||
282 | j = path_join(arg_root, p); | |
283 | if (!j) | |
284 | return -ENOMEM; | |
285 | ||
286 | *ret = TAKE_PTR(j); | |
287 | } else | |
288 | *ret = TAKE_PTR(p); | |
289 | ||
290 | return 0; | |
5a8575ef ZJS |
291 | } |
292 | ||
4cef1923 FB |
293 | static int log_unresolvable_specifier(const char *filename, unsigned line) { |
294 | static bool notified = false; | |
295 | ||
5a8575ef ZJS |
296 | /* In system mode, this is called when /etc is not fully initialized (e.g. |
297 | * in a chroot environment) where some specifiers are unresolvable. In user | |
298 | * mode, this is called when some variables are not defined. These cases are | |
299 | * not considered as an error so log at LOG_NOTICE only for the first time | |
300 | * and then downgrade this to LOG_DEBUG for the rest. */ | |
4cef1923 | 301 | |
d02933fd LP |
302 | log_syntax(NULL, |
303 | notified ? LOG_DEBUG : LOG_NOTICE, | |
304 | filename, line, 0, | |
305 | "Failed to resolve specifier: %s, skipping", | |
306 | arg_user ? "Required $XDG_... variable not defined" : "uninitialized /etc detected"); | |
4cef1923 FB |
307 | |
308 | if (!notified) | |
309 | log_notice("All rules containing unresolvable specifiers will be skipped."); | |
310 | ||
311 | notified = true; | |
312 | return 0; | |
313 | } | |
314 | ||
f2b5ca0e ZJS |
315 | static int user_config_paths(char*** ret) { |
316 | _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL; | |
317 | _cleanup_free_ char *persistent_config = NULL, *runtime_config = NULL, *data_home = NULL; | |
318 | _cleanup_strv_free_ char **res = NULL; | |
319 | int r; | |
320 | ||
321 | r = xdg_user_dirs(&config_dirs, &data_dirs); | |
322 | if (r < 0) | |
323 | return r; | |
324 | ||
325 | r = xdg_user_config_dir(&persistent_config, "/user-tmpfiles.d"); | |
326 | if (r < 0 && r != -ENXIO) | |
327 | return r; | |
328 | ||
329 | r = xdg_user_runtime_dir(&runtime_config, "/user-tmpfiles.d"); | |
330 | if (r < 0 && r != -ENXIO) | |
331 | return r; | |
332 | ||
333 | r = xdg_user_data_dir(&data_home, "/user-tmpfiles.d"); | |
334 | if (r < 0 && r != -ENXIO) | |
335 | return r; | |
336 | ||
337 | r = strv_extend_strv_concat(&res, config_dirs, "/user-tmpfiles.d"); | |
338 | if (r < 0) | |
339 | return r; | |
340 | ||
341 | r = strv_extend(&res, persistent_config); | |
342 | if (r < 0) | |
343 | return r; | |
344 | ||
345 | r = strv_extend(&res, runtime_config); | |
346 | if (r < 0) | |
347 | return r; | |
348 | ||
349 | r = strv_extend(&res, data_home); | |
350 | if (r < 0) | |
351 | return r; | |
352 | ||
353 | r = strv_extend_strv_concat(&res, data_dirs, "/user-tmpfiles.d"); | |
354 | if (r < 0) | |
355 | return r; | |
356 | ||
357 | r = path_strv_make_absolute_cwd(res); | |
358 | if (r < 0) | |
359 | return r; | |
360 | ||
ae2a15bc | 361 | *ret = TAKE_PTR(res); |
f2b5ca0e ZJS |
362 | return 0; |
363 | } | |
364 | ||
66ccd038 | 365 | static bool needs_glob(ItemType t) { |
cde684a2 LP |
366 | return IN_SET(t, |
367 | WRITE_FILE, | |
368 | IGNORE_PATH, | |
369 | IGNORE_DIRECTORY_PATH, | |
370 | REMOVE_PATH, | |
371 | RECURSIVE_REMOVE_PATH, | |
df8dee85 | 372 | EMPTY_DIRECTORY, |
e73a03e0 | 373 | ADJUST_MODE, |
cde684a2 | 374 | RELABEL_PATH, |
b705ab6a ZJS |
375 | RECURSIVE_RELABEL_PATH, |
376 | SET_XATTR, | |
377 | RECURSIVE_SET_XATTR, | |
378 | SET_ACL, | |
34f64536 LP |
379 | RECURSIVE_SET_ACL, |
380 | SET_ATTRIBUTE, | |
381 | RECURSIVE_SET_ATTRIBUTE); | |
b8bb3e8f LP |
382 | } |
383 | ||
3f93da98 ZJS |
384 | static bool takes_ownership(ItemType t) { |
385 | return IN_SET(t, | |
386 | CREATE_FILE, | |
387 | TRUNCATE_FILE, | |
388 | CREATE_DIRECTORY, | |
df8dee85 | 389 | EMPTY_DIRECTORY, |
3f93da98 ZJS |
390 | TRUNCATE_DIRECTORY, |
391 | CREATE_SUBVOLUME, | |
5fb13eb5 LP |
392 | CREATE_SUBVOLUME_INHERIT_QUOTA, |
393 | CREATE_SUBVOLUME_NEW_QUOTA, | |
3f93da98 ZJS |
394 | CREATE_FIFO, |
395 | CREATE_SYMLINK, | |
396 | CREATE_CHAR_DEVICE, | |
397 | CREATE_BLOCK_DEVICE, | |
398 | COPY_FILES, | |
3f93da98 ZJS |
399 | WRITE_FILE, |
400 | IGNORE_PATH, | |
401 | IGNORE_DIRECTORY_PATH, | |
402 | REMOVE_PATH, | |
403 | RECURSIVE_REMOVE_PATH); | |
404 | } | |
405 | ||
ef43a391 | 406 | static struct Item* find_glob(OrderedHashmap *h, const char *match) { |
3f93da98 | 407 | ItemArray *j; |
b8bb3e8f | 408 | |
90e74a66 | 409 | ORDERED_HASHMAP_FOREACH(j, h) { |
96d10d78 | 410 | size_t n; |
3f93da98 | 411 | |
96d10d78 | 412 | for (n = 0; n < j->n_items; n++) { |
3f93da98 ZJS |
413 | Item *item = j->items + n; |
414 | ||
415 | if (fnmatch(item->path, match, FNM_PATHNAME|FNM_PERIOD) == 0) | |
416 | return item; | |
417 | } | |
418 | } | |
b8bb3e8f LP |
419 | |
420 | return NULL; | |
421 | } | |
422 | ||
71a0be76 YW |
423 | static int load_unix_sockets(void) { |
424 | _cleanup_set_free_free_ Set *sockets = NULL; | |
7fd1b19b | 425 | _cleanup_fclose_ FILE *f = NULL; |
f1ff734f | 426 | int r; |
17b90525 LP |
427 | |
428 | if (unix_sockets) | |
71a0be76 | 429 | return 0; |
17b90525 | 430 | |
f1ff734f | 431 | /* We maintain a cache of the sockets we found in /proc/net/unix to speed things up a little. */ |
17b90525 | 432 | |
71a0be76 YW |
433 | sockets = set_new(&path_hash_ops); |
434 | if (!sockets) | |
435 | return log_oom(); | |
17b90525 | 436 | |
fdcad0c2 | 437 | f = fopen("/proc/net/unix", "re"); |
71a0be76 YW |
438 | if (!f) |
439 | return log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_WARNING, errno, | |
440 | "Failed to open /proc/net/unix, ignoring: %m"); | |
17b90525 | 441 | |
fdcad0c2 | 442 | /* Skip header */ |
f1ff734f | 443 | r = read_line(f, LONG_LINE_MAX, NULL); |
71a0be76 YW |
444 | if (r < 0) |
445 | return log_warning_errno(r, "Failed to skip /proc/net/unix header line: %m"); | |
446 | if (r == 0) | |
447 | return log_warning_errno(SYNTHETIC_ERRNO(EIO), "Premature end of file reading /proc/net/unix."); | |
17b90525 LP |
448 | |
449 | for (;;) { | |
71a0be76 YW |
450 | _cleanup_free_ char *line = NULL, *s = NULL; |
451 | char *p; | |
17b90525 | 452 | |
f1ff734f | 453 | r = read_line(f, LONG_LINE_MAX, &line); |
71a0be76 YW |
454 | if (r < 0) |
455 | return log_warning_errno(r, "Failed to read /proc/net/unix line, ignoring: %m"); | |
f1ff734f | 456 | if (r == 0) /* EOF */ |
17b90525 LP |
457 | break; |
458 | ||
fdcad0c2 LP |
459 | p = strchr(line, ':'); |
460 | if (!p) | |
461 | continue; | |
462 | ||
463 | if (strlen(p) < 37) | |
17b90525 LP |
464 | continue; |
465 | ||
fdcad0c2 | 466 | p += 37; |
17b90525 | 467 | p += strspn(p, WHITESPACE); |
fdcad0c2 | 468 | p += strcspn(p, WHITESPACE); /* skip one more word */ |
17b90525 LP |
469 | p += strspn(p, WHITESPACE); |
470 | ||
471 | if (*p != '/') | |
472 | continue; | |
473 | ||
fdcad0c2 | 474 | s = strdup(p); |
71a0be76 YW |
475 | if (!s) |
476 | return log_oom(); | |
17b90525 | 477 | |
4ff361cc | 478 | path_simplify(s); |
4ff21d85 | 479 | |
71a0be76 YW |
480 | r = set_consume(sockets, s); |
481 | if (r == -EEXIST) | |
482 | continue; | |
483 | if (r < 0) | |
484 | return log_warning_errno(r, "Failed to add AF_UNIX socket to set, ignoring: %m"); | |
17b90525 | 485 | |
71a0be76 YW |
486 | TAKE_PTR(s); |
487 | } | |
17b90525 | 488 | |
71a0be76 YW |
489 | unix_sockets = TAKE_PTR(sockets); |
490 | return 1; | |
17b90525 LP |
491 | } |
492 | ||
493 | static bool unix_socket_alive(const char *fn) { | |
494 | assert(fn); | |
495 | ||
71a0be76 YW |
496 | if (load_unix_sockets() < 0) |
497 | return true; /* We don't know, so assume yes */ | |
17b90525 | 498 | |
71a0be76 | 499 | return !!set_get(unix_sockets, (char*) fn); |
17b90525 LP |
500 | } |
501 | ||
df99a9ef ZJS |
502 | static DIR* xopendirat_nomod(int dirfd, const char *path) { |
503 | DIR *dir; | |
504 | ||
505 | dir = xopendirat(dirfd, path, O_NOFOLLOW|O_NOATIME); | |
1532227a LP |
506 | if (dir) |
507 | return dir; | |
508 | ||
509 | log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); | |
510 | if (errno != EPERM) | |
511 | return NULL; | |
512 | ||
513 | dir = xopendirat(dirfd, path, O_NOFOLLOW); | |
514 | if (!dir) | |
515 | log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); | |
df99a9ef ZJS |
516 | |
517 | return dir; | |
518 | } | |
519 | ||
520 | static DIR* opendir_nomod(const char *path) { | |
521 | return xopendirat_nomod(AT_FDCWD, path); | |
522 | } | |
523 | ||
ddb439b8 LP |
524 | static inline nsec_t load_statx_timestamp_nsec(const struct statx_timestamp *ts) { |
525 | assert(ts); | |
526 | ||
527 | if (ts->tv_sec < 0) | |
528 | return NSEC_INFINITY; | |
529 | ||
530 | if ((nsec_t) ts->tv_sec >= (UINT64_MAX - ts->tv_nsec) / NSEC_PER_SEC) | |
531 | return NSEC_INFINITY; | |
532 | ||
533 | return ts->tv_sec * NSEC_PER_SEC + ts->tv_nsec; | |
534 | } | |
535 | ||
7f7a50dd SK |
536 | static bool needs_cleanup( |
537 | nsec_t atime, | |
538 | nsec_t btime, | |
539 | nsec_t ctime, | |
540 | nsec_t mtime, | |
541 | nsec_t cutoff, | |
542 | const char *sub_path, | |
543 | AgeBy age_by, | |
544 | bool is_dir) { | |
545 | ||
546 | if (FLAGS_SET(age_by, AGE_BY_MTIME) && mtime != NSEC_INFINITY && mtime >= cutoff) { | |
7f7a50dd SK |
547 | /* Follows spelling in stat(1). */ |
548 | log_debug("%s \"%s\": modify time %s is too new.", | |
549 | is_dir ? "Directory" : "File", | |
550 | sub_path, | |
0086ef19 | 551 | FORMAT_TIMESTAMP_STYLE(mtime / NSEC_PER_USEC, TIMESTAMP_US)); |
7f7a50dd SK |
552 | |
553 | return false; | |
554 | } | |
555 | ||
556 | if (FLAGS_SET(age_by, AGE_BY_ATIME) && atime != NSEC_INFINITY && atime >= cutoff) { | |
7f7a50dd SK |
557 | log_debug("%s \"%s\": access time %s is too new.", |
558 | is_dir ? "Directory" : "File", | |
559 | sub_path, | |
0086ef19 | 560 | FORMAT_TIMESTAMP_STYLE(atime / NSEC_PER_USEC, TIMESTAMP_US)); |
7f7a50dd SK |
561 | |
562 | return false; | |
563 | } | |
564 | ||
565 | /* | |
566 | * Note: Unless explicitly specified by the user, "ctime" is ignored | |
567 | * by default for directories, because we change it when deleting. | |
568 | */ | |
569 | if (FLAGS_SET(age_by, AGE_BY_CTIME) && ctime != NSEC_INFINITY && ctime >= cutoff) { | |
7f7a50dd SK |
570 | log_debug("%s \"%s\": change time %s is too new.", |
571 | is_dir ? "Directory" : "File", | |
572 | sub_path, | |
0086ef19 | 573 | FORMAT_TIMESTAMP_STYLE(ctime / NSEC_PER_USEC, TIMESTAMP_US)); |
7f7a50dd SK |
574 | |
575 | return false; | |
576 | } | |
577 | ||
578 | if (FLAGS_SET(age_by, AGE_BY_BTIME) && btime != NSEC_INFINITY && btime >= cutoff) { | |
7f7a50dd SK |
579 | log_debug("%s \"%s\": birth time %s is too new.", |
580 | is_dir ? "Directory" : "File", | |
581 | sub_path, | |
0086ef19 | 582 | FORMAT_TIMESTAMP_STYLE(btime / NSEC_PER_USEC, TIMESTAMP_US)); |
7f7a50dd SK |
583 | |
584 | return false; | |
585 | } | |
586 | ||
587 | return true; | |
588 | } | |
589 | ||
3b63d2d3 | 590 | static int dir_cleanup( |
78a92a5a | 591 | Item *i, |
3b63d2d3 LP |
592 | const char *p, |
593 | DIR *d, | |
ddb439b8 LP |
594 | nsec_t self_atime_nsec, |
595 | nsec_t self_mtime_nsec, | |
596 | nsec_t cutoff_nsec, | |
597 | dev_t rootdev_major, | |
598 | dev_t rootdev_minor, | |
3b63d2d3 | 599 | bool mountpoint, |
24f3a374 | 600 | int maxdepth, |
7f7a50dd SK |
601 | bool keep_this_level, |
602 | AgeBy age_by_file, | |
603 | AgeBy age_by_dir) { | |
265ffa1e | 604 | |
3b63d2d3 | 605 | bool deleted = false; |
ddb439b8 | 606 | struct dirent *dent; |
3b63d2d3 LP |
607 | int r = 0; |
608 | ||
8fb3f009 | 609 | FOREACH_DIRENT_ALL(dent, d, break) { |
7fd1b19b | 610 | _cleanup_free_ char *sub_path = NULL; |
ddb439b8 | 611 | nsec_t atime_nsec, mtime_nsec, ctime_nsec, btime_nsec; |
3b63d2d3 | 612 | |
49bfc877 | 613 | if (dot_or_dot_dot(dent->d_name)) |
3b63d2d3 | 614 | continue; |
5008d581 | 615 | |
ca194a2a | 616 | /* If statx() is supported, use it. It's preferable over fstatat() since it tells us |
69e3234d | 617 | * explicitly where we are looking at a mount point, for free as side information. Determining |
ca194a2a LP |
618 | * the same information without statx() is hard, see the complexity of path_is_mount_point(), |
619 | * and also much slower as it requires a number of syscalls instead of just one. Hence, when | |
620 | * we have modern statx() we use it instead of fstat() and do proper mount point checks, | |
621 | * while on older kernels's well do traditional st_dev based detection of mount points. | |
622 | * | |
623 | * Using statx() for detecting mount points also has the benfit that we handle weird file | |
624 | * systems such as overlayfs better where each file is originating from a different | |
625 | * st_dev. */ | |
626 | ||
627 | STRUCT_STATX_DEFINE(sx); | |
628 | ||
629 | r = statx_fallback( | |
630 | dirfd(d), dent->d_name, | |
631 | AT_SYMLINK_NOFOLLOW|AT_NO_AUTOMOUNT, | |
632 | STATX_TYPE|STATX_MODE|STATX_UID|STATX_ATIME|STATX_MTIME|STATX_CTIME|STATX_BTIME, | |
633 | &sx); | |
634 | if (r == -ENOENT) | |
635 | continue; | |
636 | if (r < 0) { | |
637 | /* FUSE, NFS mounts, SELinux might return EACCES */ | |
638 | r = log_full_errno(errno == EACCES ? LOG_DEBUG : LOG_ERR, errno, | |
639 | "statx(%s/%s) failed: %m", p, dent->d_name); | |
640 | continue; | |
3b63d2d3 LP |
641 | } |
642 | ||
ca194a2a LP |
643 | if (FLAGS_SET(sx.stx_attributes_mask, STATX_ATTR_MOUNT_ROOT)) { |
644 | /* Yay, we have the mount point API, use it */ | |
645 | if (FLAGS_SET(sx.stx_attributes, STATX_ATTR_MOUNT_ROOT)) { | |
646 | log_debug("Ignoring \"%s/%s\": different mount points.", p, dent->d_name); | |
ddb439b8 LP |
647 | continue; |
648 | } | |
ca194a2a LP |
649 | } else { |
650 | /* So we might have statx() but the STATX_ATTR_MOUNT_ROOT flag is not supported, fall | |
651 | * back to traditional stx_dev checking. */ | |
652 | if (sx.stx_dev_major != rootdev_major || | |
653 | sx.stx_dev_minor != rootdev_minor) { | |
ddb439b8 LP |
654 | log_debug("Ignoring \"%s/%s\": different filesystem.", p, dent->d_name); |
655 | continue; | |
656 | } | |
657 | ||
ca194a2a LP |
658 | /* Try to detect bind mounts of the same filesystem instance; they do not differ in device |
659 | * major/minors. This type of query is not supported on all kernels or filesystem types | |
660 | * though. */ | |
661 | if (S_ISDIR(sx.stx_mode)) { | |
662 | int q; | |
3b63d2d3 | 663 | |
ca194a2a LP |
664 | q = fd_is_mount_point(dirfd(d), dent->d_name, 0); |
665 | if (q < 0) | |
666 | log_debug_errno(q, "Failed to determine whether \"%s/%s\" is a mount point, ignoring: %m", p, dent->d_name); | |
667 | else if (q > 0) { | |
668 | log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.", p, dent->d_name); | |
669 | continue; | |
670 | } | |
60bdc0ca | 671 | } |
582deb84 | 672 | } |
99d680ac | 673 | |
ca194a2a LP |
674 | atime_nsec = FLAGS_SET(sx.stx_mask, STATX_ATIME) ? load_statx_timestamp_nsec(&sx.stx_atime) : 0; |
675 | mtime_nsec = FLAGS_SET(sx.stx_mask, STATX_MTIME) ? load_statx_timestamp_nsec(&sx.stx_mtime) : 0; | |
676 | ctime_nsec = FLAGS_SET(sx.stx_mask, STATX_CTIME) ? load_statx_timestamp_nsec(&sx.stx_ctime) : 0; | |
677 | btime_nsec = FLAGS_SET(sx.stx_mask, STATX_BTIME) ? load_statx_timestamp_nsec(&sx.stx_btime) : 0; | |
678 | ||
113ed3be | 679 | sub_path = path_join(p, dent->d_name); |
cde684a2 | 680 | if (!sub_path) { |
0d0f0c50 | 681 | r = log_oom(); |
3b63d2d3 LP |
682 | goto finish; |
683 | } | |
684 | ||
685 | /* Is there an item configured for this path? */ | |
ef43a391 | 686 | if (ordered_hashmap_get(items, sub_path)) { |
582deb84 | 687 | log_debug("Ignoring \"%s\": a separate entry exists.", sub_path); |
3b63d2d3 | 688 | continue; |
582deb84 | 689 | } |
3b63d2d3 | 690 | |
582deb84 ZJS |
691 | if (find_glob(globs, sub_path)) { |
692 | log_debug("Ignoring \"%s\": a separate glob exists.", sub_path); | |
b8bb3e8f | 693 | continue; |
582deb84 | 694 | } |
b8bb3e8f | 695 | |
ca194a2a | 696 | if (S_ISDIR(sx.stx_mode)) { |
52b32b2a | 697 | _cleanup_closedir_ DIR *sub_dir = NULL; |
3b63d2d3 LP |
698 | |
699 | if (mountpoint && | |
700 | streq(dent->d_name, "lost+found") && | |
ca194a2a | 701 | sx.stx_uid == 0) { |
781bc44e | 702 | log_debug("Ignoring directory \"%s\".", sub_path); |
3b63d2d3 | 703 | continue; |
582deb84 | 704 | } |
3b63d2d3 LP |
705 | |
706 | if (maxdepth <= 0) | |
582deb84 | 707 | log_warning("Reached max depth on \"%s\".", sub_path); |
3b63d2d3 | 708 | else { |
3b63d2d3 LP |
709 | int q; |
710 | ||
df99a9ef | 711 | sub_dir = xopendirat_nomod(dirfd(d), dent->d_name); |
cde684a2 | 712 | if (!sub_dir) { |
582deb84 | 713 | if (errno != ENOENT) |
781bc44e | 714 | r = log_warning_errno(errno, "Opening directory \"%s\" failed, ignoring: %m", sub_path); |
3b63d2d3 LP |
715 | |
716 | continue; | |
717 | } | |
718 | ||
52b32b2a LP |
719 | if (flock(dirfd(sub_dir), LOCK_EX|LOCK_NB) < 0) { |
720 | log_debug_errno(errno, "Couldn't acquire shared BSD lock on directory \"%s\", skipping: %m", p); | |
721 | continue; | |
722 | } | |
723 | ||
ddb439b8 LP |
724 | q = dir_cleanup(i, |
725 | sub_path, sub_dir, | |
726 | atime_nsec, mtime_nsec, cutoff_nsec, | |
727 | rootdev_major, rootdev_minor, | |
7f7a50dd SK |
728 | false, maxdepth-1, false, |
729 | age_by_file, age_by_dir); | |
3b63d2d3 LP |
730 | if (q < 0) |
731 | r = q; | |
732 | } | |
733 | ||
a23fabc6 LP |
734 | /* Note: if you are wondering why we don't support the sticky bit for excluding |
735 | * directories from cleaning like we do it for other file system objects: well, the | |
736 | * sticky bit already has a meaning for directories, so we don't want to overload | |
737 | * that. */ | |
24f3a374 | 738 | |
582deb84 | 739 | if (keep_this_level) { |
781bc44e | 740 | log_debug("Keeping directory \"%s\".", sub_path); |
24f3a374 | 741 | continue; |
582deb84 | 742 | } |
24f3a374 | 743 | |
7f7a50dd SK |
744 | /* |
745 | * Check the file timestamps of an entry against the | |
746 | * given cutoff time; delete if it is older. | |
747 | */ | |
748 | if (!needs_cleanup(atime_nsec, btime_nsec, ctime_nsec, mtime_nsec, | |
749 | cutoff_nsec, sub_path, age_by_dir, true)) | |
3b63d2d3 LP |
750 | continue; |
751 | ||
61253220 ZJS |
752 | log_debug("Removing directory \"%s\".", sub_path); |
753 | if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) | |
920ce828 | 754 | if (!IN_SET(errno, ENOENT, ENOTEMPTY)) |
781bc44e | 755 | r = log_warning_errno(errno, "Failed to remove directory \"%s\", ignoring: %m", sub_path); |
3b63d2d3 LP |
756 | |
757 | } else { | |
a23fabc6 LP |
758 | /* Skip files for which the sticky bit is set. These are semantics we define, and are |
759 | * unknown elsewhere. See XDG_RUNTIME_DIR specification for details. */ | |
ca194a2a | 760 | if (sx.stx_mode & S_ISVTX) { |
582deb84 | 761 | log_debug("Skipping \"%s\": sticky bit set.", sub_path); |
9c73736d | 762 | continue; |
582deb84 | 763 | } |
9c73736d | 764 | |
20b6bb95 | 765 | if (mountpoint && |
ca194a2a LP |
766 | S_ISREG(sx.stx_mode) && |
767 | sx.stx_uid == 0 && | |
20b6bb95 LP |
768 | STR_IN_SET(dent->d_name, |
769 | ".journal", | |
770 | "aquota.user", | |
771 | "aquota.group")) { | |
772 | log_debug("Skipping \"%s\".", sub_path); | |
773 | continue; | |
774 | } | |
3b63d2d3 | 775 | |
17b90525 | 776 | /* Ignore sockets that are listed in /proc/net/unix */ |
ca194a2a | 777 | if (S_ISSOCK(sx.stx_mode) && unix_socket_alive(sub_path)) { |
582deb84 | 778 | log_debug("Skipping \"%s\": live socket.", sub_path); |
17b90525 | 779 | continue; |
582deb84 | 780 | } |
17b90525 | 781 | |
78ab08eb | 782 | /* Ignore device nodes */ |
ca194a2a | 783 | if (S_ISCHR(sx.stx_mode) || S_ISBLK(sx.stx_mode)) { |
582deb84 | 784 | log_debug("Skipping \"%s\": a device.", sub_path); |
78ab08eb | 785 | continue; |
582deb84 | 786 | } |
78ab08eb | 787 | |
a23fabc6 | 788 | /* Keep files on this level around if this is requested */ |
582deb84 ZJS |
789 | if (keep_this_level) { |
790 | log_debug("Keeping \"%s\".", sub_path); | |
24f3a374 | 791 | continue; |
582deb84 | 792 | } |
24f3a374 | 793 | |
7f7a50dd SK |
794 | if (!needs_cleanup(atime_nsec, btime_nsec, ctime_nsec, mtime_nsec, |
795 | cutoff_nsec, sub_path, age_by_file, false)) | |
3b63d2d3 | 796 | continue; |
3b63d2d3 | 797 | |
781bc44e | 798 | log_debug("Removing \"%s\".", sub_path); |
582deb84 ZJS |
799 | if (unlinkat(dirfd(d), dent->d_name, 0) < 0) |
800 | if (errno != ENOENT) | |
781bc44e | 801 | r = log_warning_errno(errno, "Failed to remove \"%s\", ignoring: %m", sub_path); |
582deb84 | 802 | |
3b63d2d3 LP |
803 | deleted = true; |
804 | } | |
805 | } | |
806 | ||
807 | finish: | |
808 | if (deleted) { | |
ddb439b8 | 809 | struct timespec ts[2]; |
76e15a9c | 810 | |
582deb84 ZJS |
811 | log_debug("Restoring access and modification time on \"%s\": %s, %s", |
812 | p, | |
0086ef19 ZJS |
813 | FORMAT_TIMESTAMP_STYLE(self_atime_nsec / NSEC_PER_USEC, TIMESTAMP_US), |
814 | FORMAT_TIMESTAMP_STYLE(self_mtime_nsec / NSEC_PER_USEC, TIMESTAMP_US)); | |
ddb439b8 LP |
815 | |
816 | timespec_store_nsec(ts + 0, self_atime_nsec); | |
817 | timespec_store_nsec(ts + 1, self_mtime_nsec); | |
76e15a9c LP |
818 | |
819 | /* Restore original directory timestamps */ | |
ddb439b8 | 820 | if (futimens(dirfd(d), ts) < 0) |
76e15a9c | 821 | log_warning_errno(errno, "Failed to revert timestamps of '%s', ignoring: %m", p); |
3b63d2d3 LP |
822 | } |
823 | ||
3b63d2d3 LP |
824 | return r; |
825 | } | |
826 | ||
5579f856 LP |
827 | static bool dangerous_hardlinks(void) { |
828 | _cleanup_free_ char *value = NULL; | |
829 | static int cached = -1; | |
830 | int r; | |
831 | ||
832 | /* Check whether the fs.protected_hardlinks sysctl is on. If we can't determine it we assume its off, as that's | |
833 | * what the upstream default is. */ | |
834 | ||
835 | if (cached >= 0) | |
836 | return cached; | |
837 | ||
838 | r = read_one_line_file("/proc/sys/fs/protected_hardlinks", &value); | |
839 | if (r < 0) { | |
840 | log_debug_errno(r, "Failed to read fs.protected_hardlinks sysctl: %m"); | |
841 | return true; | |
842 | } | |
843 | ||
844 | r = parse_boolean(value); | |
845 | if (r < 0) { | |
846 | log_debug_errno(r, "Failed to parse fs.protected_hardlinks sysctl: %m"); | |
847 | return true; | |
848 | } | |
849 | ||
850 | cached = r == 0; | |
851 | return cached; | |
852 | } | |
853 | ||
774f79b5 | 854 | static bool hardlink_vulnerable(const struct stat *st) { |
5579f856 LP |
855 | assert(st); |
856 | ||
857 | return !S_ISDIR(st->st_mode) && st->st_nlink > 1 && dangerous_hardlinks(); | |
858 | } | |
859 | ||
8b364a38 LP |
860 | static mode_t process_mask_perms(mode_t mode, mode_t current) { |
861 | ||
862 | if ((current & 0111) == 0) | |
863 | mode &= ~0111; | |
864 | if ((current & 0222) == 0) | |
865 | mode &= ~0222; | |
866 | if ((current & 0444) == 0) | |
867 | mode &= ~0444; | |
868 | if (!S_ISDIR(current)) | |
869 | mode &= ~07000; /* remove sticky/sgid/suid bit, unless directory */ | |
870 | ||
871 | return mode; | |
872 | } | |
873 | ||
9d874aec | 874 | static int fd_set_perms(Item *i, int fd, const char *path, const struct stat *st) { |
b206ac8e | 875 | struct stat stbuf; |
a9f55d0e LP |
876 | mode_t new_mode; |
877 | bool do_chown; | |
dee00c19 | 878 | int r; |
1924a97d | 879 | |
cde684a2 | 880 | assert(i); |
b4b0f87c | 881 | assert(fd >= 0); |
4dc7bfdf | 882 | assert(path); |
48b8aaa8 | 883 | |
936f6bdb FB |
884 | if (!i->mode_set && !i->uid_set && !i->gid_set) |
885 | goto shortcut; | |
1924a97d | 886 | |
b206ac8e FB |
887 | if (!st) { |
888 | if (fstat(fd, &stbuf) < 0) | |
889 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
890 | st = &stbuf; | |
891 | } | |
892 | ||
baaa35ad ZJS |
893 | if (hardlink_vulnerable(st)) |
894 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
895 | "Refusing to set permissions on hardlinked file %s while the fs.protected_hardlinks sysctl is turned off.", | |
896 | path); | |
5579f856 | 897 | |
a9f55d0e LP |
898 | /* Do we need a chown()? */ |
899 | do_chown = | |
900 | (i->uid_set && i->uid != st->st_uid) || | |
901 | (i->gid_set && i->gid != st->st_gid); | |
8b364a38 | 902 | |
a9f55d0e LP |
903 | /* Calculate the mode to apply */ |
904 | new_mode = i->mode_set ? (i->mask_perms ? | |
905 | process_mask_perms(i->mode, st->st_mode) : | |
906 | i->mode) : | |
907 | (st->st_mode & 07777); | |
908 | ||
909 | if (i->mode_set && do_chown) { | |
910 | /* Before we issue the chmod() let's reduce the access mode to the common bits of the old and | |
911 | * the new mode. That way there's no time window where the file exists under the old owner | |
912 | * with more than the old access modes — and not under the new owner with more than the new | |
913 | * access modes either. */ | |
8b364a38 | 914 | |
936f6bdb | 915 | if (S_ISLNK(st->st_mode)) |
a9f55d0e | 916 | log_debug("Skipping temporary mode fix for symlink %s.", path); |
51207ca1 | 917 | else { |
a9f55d0e | 918 | mode_t m = new_mode & st->st_mode; /* Mask new mode by old mode */ |
abef3f91 | 919 | |
a9f55d0e LP |
920 | if (((m ^ st->st_mode) & 07777) == 0) |
921 | log_debug("\"%s\" matches temporary mode %o already.", path, m); | |
48b8aaa8 | 922 | else { |
a9f55d0e | 923 | log_debug("Temporarily changing \"%s\" to mode %o.", path, m); |
dee00c19 LP |
924 | r = fchmod_opath(fd, m); |
925 | if (r < 0) | |
926 | return log_error_errno(r, "fchmod() of %s failed: %m", path); | |
48b8aaa8 | 927 | } |
062e01bb | 928 | } |
51207ca1 | 929 | } |
062e01bb | 930 | |
a9f55d0e | 931 | if (do_chown) { |
51207ca1 LP |
932 | log_debug("Changing \"%s\" to owner "UID_FMT":"GID_FMT, |
933 | path, | |
934 | i->uid_set ? i->uid : UID_INVALID, | |
935 | i->gid_set ? i->gid : GID_INVALID); | |
936 | ||
936f6bdb FB |
937 | if (fchownat(fd, |
938 | "", | |
939 | i->uid_set ? i->uid : UID_INVALID, | |
940 | i->gid_set ? i->gid : GID_INVALID, | |
941 | AT_EMPTY_PATH) < 0) | |
942 | return log_error_errno(errno, "fchownat() of %s failed: %m", path); | |
582deb84 | 943 | } |
062e01bb | 944 | |
a9f55d0e LP |
945 | /* Now, apply the final mode. We do this in two cases: when the user set a mode explicitly, or after a |
946 | * chown(), since chown()'s mangle the access mode in regards to sgid/suid in some conditions. */ | |
947 | if (i->mode_set || do_chown) { | |
948 | if (S_ISLNK(st->st_mode)) | |
949 | log_debug("Skipping mode fix for symlink %s.", path); | |
950 | else { | |
951 | /* Check if the chmod() is unnecessary. Note that if we did a chown() before we always | |
952 | * chmod() here again, since it might have mangled the bits. */ | |
953 | if (!do_chown && ((new_mode ^ st->st_mode) & 07777) == 0) | |
954 | log_debug("\"%s\" matches mode %o already.", path, new_mode); | |
955 | else { | |
956 | log_debug("Changing \"%s\" to mode %o.", path, new_mode); | |
dee00c19 LP |
957 | r = fchmod_opath(fd, new_mode); |
958 | if (r < 0) | |
959 | return log_error_errno(r, "fchmod() of %s failed: %m", path); | |
a9f55d0e LP |
960 | } |
961 | } | |
962 | } | |
963 | ||
59793c8f | 964 | shortcut: |
08c84981 | 965 | return label_fix(path, 0); |
062e01bb MS |
966 | } |
967 | ||
5ec9d065 FB |
968 | static int path_open_parent_safe(const char *path) { |
969 | _cleanup_free_ char *dn = NULL; | |
a5648b80 | 970 | int r, fd; |
5ec9d065 | 971 | |
baaa35ad ZJS |
972 | if (path_equal(path, "/") || !path_is_normalized(path)) |
973 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
974 | "Failed to open parent of '%s': invalid path.", | |
975 | path); | |
5ec9d065 FB |
976 | |
977 | dn = dirname_malloc(path); | |
978 | if (!dn) | |
979 | return log_oom(); | |
980 | ||
a5648b80 ZJS |
981 | r = chase_symlinks(dn, arg_root, CHASE_SAFE|CHASE_WARN, NULL, &fd); |
982 | if (r < 0 && r != -ENOLINK) | |
983 | return log_error_errno(r, "Failed to validate path %s: %m", path); | |
5ec9d065 | 984 | |
a5648b80 | 985 | return r < 0 ? r : fd; |
5ec9d065 FB |
986 | } |
987 | ||
addc3e30 | 988 | static int path_open_safe(const char *path) { |
a5648b80 | 989 | int r, fd; |
addc3e30 FB |
990 | |
991 | /* path_open_safe() returns a file descriptor opened with O_PATH after | |
992 | * verifying that the path doesn't contain unsafe transitions, except | |
993 | * for its final component as the function does not follow symlink. */ | |
994 | ||
995 | assert(path); | |
996 | ||
baaa35ad ZJS |
997 | if (!path_is_normalized(path)) |
998 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
999 | "Failed to open invalid path '%s'.", | |
1000 | path); | |
addc3e30 | 1001 | |
a5648b80 ZJS |
1002 | r = chase_symlinks(path, arg_root, CHASE_SAFE|CHASE_WARN|CHASE_NOFOLLOW, NULL, &fd); |
1003 | if (r < 0 && r != -ENOLINK) | |
1004 | return log_error_errno(r, "Failed to validate path %s: %m", path); | |
addc3e30 | 1005 | |
a5648b80 | 1006 | return r < 0 ? r : fd; |
addc3e30 FB |
1007 | } |
1008 | ||
936f6bdb FB |
1009 | static int path_set_perms(Item *i, const char *path) { |
1010 | _cleanup_close_ int fd = -1; | |
936f6bdb FB |
1011 | |
1012 | assert(i); | |
1013 | assert(path); | |
1014 | ||
addc3e30 | 1015 | fd = path_open_safe(path); |
54946021 | 1016 | if (fd < 0) |
addc3e30 | 1017 | return fd; |
d460ba18 | 1018 | |
9d874aec | 1019 | return fd_set_perms(i, fd, path, NULL); |
936f6bdb FB |
1020 | } |
1021 | ||
bd550f78 | 1022 | static int parse_xattrs_from_arg(Item *i) { |
ebf4e801 MW |
1023 | const char *p; |
1024 | int r; | |
1025 | ||
1026 | assert(i); | |
505ef0e3 | 1027 | assert(i->argument); |
ebf4e801 | 1028 | |
ebf4e801 MW |
1029 | p = i->argument; |
1030 | ||
4034a06d | 1031 | for (;;) { |
4cef1923 | 1032 | _cleanup_free_ char *name = NULL, *value = NULL, *xattr = NULL; |
4034a06d | 1033 | |
4ec85141 | 1034 | r = extract_first_word(&p, &xattr, NULL, EXTRACT_UNQUOTE|EXTRACT_CUNESCAPE); |
4034a06d | 1035 | if (r < 0) |
bd550f78 | 1036 | log_warning_errno(r, "Failed to parse extended attribute '%s', ignoring: %m", p); |
4034a06d LP |
1037 | if (r <= 0) |
1038 | break; | |
505ef0e3 | 1039 | |
4cef1923 | 1040 | r = split_pair(xattr, "=", &name, &value); |
ebf4e801 | 1041 | if (r < 0) { |
4034a06d | 1042 | log_warning_errno(r, "Failed to parse extended attribute, ignoring: %s", xattr); |
ebf4e801 MW |
1043 | continue; |
1044 | } | |
505ef0e3 | 1045 | |
4034a06d | 1046 | if (isempty(name) || isempty(value)) { |
bd550f78 | 1047 | log_warning("Malformed extended attribute found, ignoring: %s", xattr); |
ebf4e801 MW |
1048 | continue; |
1049 | } | |
505ef0e3 | 1050 | |
4034a06d | 1051 | if (strv_push_pair(&i->xattrs, name, value) < 0) |
ebf4e801 | 1052 | return log_oom(); |
505ef0e3 | 1053 | |
4034a06d | 1054 | name = value = NULL; |
ebf4e801 MW |
1055 | } |
1056 | ||
4034a06d | 1057 | return 0; |
ebf4e801 MW |
1058 | } |
1059 | ||
9d874aec | 1060 | static int fd_set_xattrs(Item *i, int fd, const char *path, const struct stat *st) { |
34d26777 | 1061 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
ebf4e801 MW |
1062 | char **name, **value; |
1063 | ||
1064 | assert(i); | |
b4b0f87c | 1065 | assert(fd >= 0); |
4dc7bfdf | 1066 | assert(path); |
936f6bdb FB |
1067 | |
1068 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); | |
ebf4e801 | 1069 | |
ebf4e801 | 1070 | STRV_FOREACH_PAIR(name, value, i->xattrs) { |
bd550f78 | 1071 | log_debug("Setting extended attribute '%s=%s' on %s.", *name, *value, path); |
936f6bdb | 1072 | if (setxattr(procfs_path, *name, *value, strlen(*value), 0) < 0) |
25f027c5 ZJS |
1073 | return log_error_errno(errno, "Setting extended attribute %s=%s on %s failed: %m", |
1074 | *name, *value, path); | |
ebf4e801 MW |
1075 | } |
1076 | return 0; | |
1077 | } | |
1078 | ||
936f6bdb FB |
1079 | static int path_set_xattrs(Item *i, const char *path) { |
1080 | _cleanup_close_ int fd = -1; | |
1081 | ||
1082 | assert(i); | |
1083 | assert(path); | |
1084 | ||
addc3e30 | 1085 | fd = path_open_safe(path); |
936f6bdb | 1086 | if (fd < 0) |
addc3e30 | 1087 | return fd; |
936f6bdb | 1088 | |
9d874aec | 1089 | return fd_set_xattrs(i, fd, path, NULL); |
936f6bdb FB |
1090 | } |
1091 | ||
bd550f78 | 1092 | static int parse_acls_from_arg(Item *item) { |
349cc4a5 | 1093 | #if HAVE_ACL |
f8eeeaf9 | 1094 | int r; |
f8eeeaf9 ZJS |
1095 | |
1096 | assert(item); | |
1097 | ||
c55ac248 | 1098 | /* If append_or_force (= modify) is set, we will not modify the acl |
50d9e46d | 1099 | * afterwards, so the mask can be added now if necessary. */ |
bd550f78 | 1100 | |
c55ac248 | 1101 | r = parse_acl(item->argument, &item->acl_access, &item->acl_default, !item->append_or_force); |
f8eeeaf9 | 1102 | if (r < 0) |
4034a06d | 1103 | log_warning_errno(r, "Failed to parse ACL \"%s\": %m. Ignoring", item->argument); |
f8eeeaf9 | 1104 | #else |
6008336f | 1105 | log_warning("ACLs are not supported. Ignoring."); |
f8eeeaf9 ZJS |
1106 | #endif |
1107 | ||
1108 | return 0; | |
1109 | } | |
1110 | ||
349cc4a5 | 1111 | #if HAVE_ACL |
48b8aaa8 LP |
1112 | static int path_set_acl(const char *path, const char *pretty, acl_type_t type, acl_t acl, bool modify) { |
1113 | _cleanup_(acl_free_charpp) char *t = NULL; | |
dd4105b0 | 1114 | _cleanup_(acl_freep) acl_t dup = NULL; |
50d9e46d ZJS |
1115 | int r; |
1116 | ||
d873e877 HPD |
1117 | /* Returns 0 for success, positive error if already warned, |
1118 | * negative error otherwise. */ | |
1119 | ||
50d9e46d | 1120 | if (modify) { |
dd4105b0 | 1121 | r = acls_for_file(path, type, acl, &dup); |
50d9e46d ZJS |
1122 | if (r < 0) |
1123 | return r; | |
50d9e46d | 1124 | |
dd4105b0 ZJS |
1125 | r = calc_acl_mask_if_needed(&dup); |
1126 | if (r < 0) | |
1127 | return r; | |
1128 | } else { | |
1129 | dup = acl_dup(acl); | |
1130 | if (!dup) | |
1131 | return -errno; | |
1132 | ||
1133 | /* the mask was already added earlier if needed */ | |
1134 | } | |
1135 | ||
1136 | r = add_base_acls_if_needed(&dup, path); | |
1137 | if (r < 0) | |
1138 | return r; | |
1139 | ||
582deb84 | 1140 | t = acl_to_any_text(dup, NULL, ',', TEXT_ABBREVIATE); |
48b8aaa8 | 1141 | log_debug("Setting %s ACL %s on %s.", |
582deb84 | 1142 | type == ACL_TYPE_ACCESS ? "access" : "default", |
48b8aaa8 | 1143 | strna(t), pretty); |
50d9e46d | 1144 | |
582deb84 | 1145 | r = acl_set_file(path, type, dup); |
3045c416 PC |
1146 | if (r < 0) { |
1147 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
1148 | /* No error if filesystem doesn't support ACLs. Return negative. */ | |
1149 | return -errno; | |
1150 | else | |
1151 | /* Return positive to indicate we already warned */ | |
1152 | return -log_error_errno(errno, | |
1153 | "Setting %s ACL \"%s\" on %s failed: %m", | |
1154 | type == ACL_TYPE_ACCESS ? "access" : "default", | |
1155 | strna(t), pretty); | |
1156 | } | |
582deb84 | 1157 | return 0; |
50d9e46d | 1158 | } |
35888b67 | 1159 | #endif |
50d9e46d | 1160 | |
9d874aec | 1161 | static int fd_set_acls(Item *item, int fd, const char *path, const struct stat *st) { |
d873e877 | 1162 | int r = 0; |
349cc4a5 | 1163 | #if HAVE_ACL |
34d26777 | 1164 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
b206ac8e | 1165 | struct stat stbuf; |
48b8aaa8 | 1166 | |
f8eeeaf9 | 1167 | assert(item); |
b4b0f87c | 1168 | assert(fd >= 0); |
4dc7bfdf | 1169 | assert(path); |
48b8aaa8 | 1170 | |
b206ac8e FB |
1171 | if (!st) { |
1172 | if (fstat(fd, &stbuf) < 0) | |
1173 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
1174 | st = &stbuf; | |
1175 | } | |
1176 | ||
baaa35ad ZJS |
1177 | if (hardlink_vulnerable(st)) |
1178 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
1179 | "Refusing to set ACLs on hardlinked file %s while the fs.protected_hardlinks sysctl is turned off.", | |
1180 | path); | |
5579f856 | 1181 | |
936f6bdb | 1182 | if (S_ISLNK(st->st_mode)) { |
48b8aaa8 LP |
1183 | log_debug("Skipping ACL fix for symlink %s.", path); |
1184 | return 0; | |
1185 | } | |
1186 | ||
936f6bdb | 1187 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); |
48b8aaa8 | 1188 | |
d873e877 | 1189 | if (item->acl_access) |
c55ac248 | 1190 | r = path_set_acl(procfs_path, path, ACL_TYPE_ACCESS, item->acl_access, item->append_or_force); |
f8eeeaf9 | 1191 | |
2667385b RM |
1192 | /* set only default acls to folders */ |
1193 | if (r == 0 && item->acl_default && S_ISDIR(st->st_mode)) | |
c55ac248 | 1194 | r = path_set_acl(procfs_path, path, ACL_TYPE_DEFAULT, item->acl_default, item->append_or_force); |
f8eeeaf9 | 1195 | |
3045c416 PC |
1196 | if (ERRNO_IS_NOT_SUPPORTED(r)) { |
1197 | log_debug_errno(r, "ACLs not supported by file system at %s", path); | |
1198 | return 0; | |
1199 | } | |
1200 | ||
d873e877 HPD |
1201 | if (r > 0) |
1202 | return -r; /* already warned */ | |
f8606626 LP |
1203 | |
1204 | /* The above procfs paths don't work if /proc is not mounted. */ | |
1205 | if (r == -ENOENT && proc_mounted() == 0) | |
1206 | r = -ENOSYS; | |
1207 | ||
936f6bdb FB |
1208 | if (r < 0) |
1209 | return log_error_errno(r, "ACL operation on \"%s\" failed: %m", path); | |
d873e877 HPD |
1210 | #endif |
1211 | return r; | |
f8eeeaf9 ZJS |
1212 | } |
1213 | ||
936f6bdb FB |
1214 | static int path_set_acls(Item *item, const char *path) { |
1215 | int r = 0; | |
545cdb90 | 1216 | #if HAVE_ACL |
936f6bdb | 1217 | _cleanup_close_ int fd = -1; |
936f6bdb FB |
1218 | |
1219 | assert(item); | |
1220 | assert(path); | |
1221 | ||
addc3e30 | 1222 | fd = path_open_safe(path); |
936f6bdb | 1223 | if (fd < 0) |
addc3e30 | 1224 | return fd; |
936f6bdb | 1225 | |
9d874aec | 1226 | r = fd_set_acls(item, fd, path, NULL); |
545cdb90 YW |
1227 | #endif |
1228 | return r; | |
1229 | } | |
936f6bdb | 1230 | |
bd550f78 | 1231 | static int parse_attribute_from_arg(Item *item) { |
88ec4dfa LP |
1232 | |
1233 | static const struct { | |
1234 | char character; | |
1235 | unsigned value; | |
1236 | } attributes[] = { | |
1237 | { 'A', FS_NOATIME_FL }, /* do not update atime */ | |
1238 | { 'S', FS_SYNC_FL }, /* Synchronous updates */ | |
1239 | { 'D', FS_DIRSYNC_FL }, /* dirsync behaviour (directories only) */ | |
1240 | { 'a', FS_APPEND_FL }, /* writes to file may only append */ | |
1241 | { 'c', FS_COMPR_FL }, /* Compress file */ | |
1242 | { 'd', FS_NODUMP_FL }, /* do not dump file */ | |
8c35b2ca | 1243 | { 'e', FS_EXTENT_FL }, /* Extents */ |
88ec4dfa LP |
1244 | { 'i', FS_IMMUTABLE_FL }, /* Immutable file */ |
1245 | { 'j', FS_JOURNAL_DATA_FL }, /* Reserved for ext3 */ | |
1246 | { 's', FS_SECRM_FL }, /* Secure deletion */ | |
1247 | { 'u', FS_UNRM_FL }, /* Undelete */ | |
1248 | { 't', FS_NOTAIL_FL }, /* file tail should not be merged */ | |
13e785f7 | 1249 | { 'T', FS_TOPDIR_FL }, /* Top of directory hierarchies */ |
88ec4dfa | 1250 | { 'C', FS_NOCOW_FL }, /* Do not cow file */ |
75006470 | 1251 | { 'P', FS_PROJINHERIT_FL }, /* Inherit the quota project ID */ |
22c3a6ca | 1252 | }; |
88ec4dfa | 1253 | |
22c3a6ca GB |
1254 | enum { |
1255 | MODE_ADD, | |
1256 | MODE_DEL, | |
1257 | MODE_SET | |
1258 | } mode = MODE_ADD; | |
22c3a6ca | 1259 | |
88ec4dfa LP |
1260 | unsigned value = 0, mask = 0; |
1261 | const char *p; | |
22c3a6ca | 1262 | |
88ec4dfa LP |
1263 | assert(item); |
1264 | ||
1265 | p = item->argument; | |
1266 | if (p) { | |
1267 | if (*p == '+') { | |
1268 | mode = MODE_ADD; | |
1269 | p++; | |
1270 | } else if (*p == '-') { | |
1271 | mode = MODE_DEL; | |
1272 | p++; | |
1273 | } else if (*p == '=') { | |
1274 | mode = MODE_SET; | |
1275 | p++; | |
1276 | } | |
22c3a6ca GB |
1277 | } |
1278 | ||
baaa35ad ZJS |
1279 | if (isempty(p) && mode != MODE_SET) |
1280 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1281 | "Setting file attribute on '%s' needs an attribute specification.", | |
1282 | item->path); | |
88ec4dfa LP |
1283 | |
1284 | for (; p && *p ; p++) { | |
1285 | unsigned i, v; | |
1286 | ||
1287 | for (i = 0; i < ELEMENTSOF(attributes); i++) | |
1288 | if (*p == attributes[i].character) | |
1289 | break; | |
1290 | ||
baaa35ad ZJS |
1291 | if (i >= ELEMENTSOF(attributes)) |
1292 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1293 | "Unknown file attribute '%c' on '%s'.", | |
1294 | *p, item->path); | |
88ec4dfa LP |
1295 | |
1296 | v = attributes[i].value; | |
1297 | ||
3742095b | 1298 | SET_FLAG(value, v, IN_SET(mode, MODE_ADD, MODE_SET)); |
88ec4dfa LP |
1299 | |
1300 | mask |= v; | |
22c3a6ca GB |
1301 | } |
1302 | ||
1303 | if (mode == MODE_SET) | |
d629ba70 | 1304 | mask |= CHATTR_ALL_FL; |
22c3a6ca | 1305 | |
88ec4dfa | 1306 | assert(mask != 0); |
22c3a6ca | 1307 | |
88ec4dfa LP |
1308 | item->attribute_mask = mask; |
1309 | item->attribute_value = value; | |
1310 | item->attribute_set = true; | |
22c3a6ca GB |
1311 | |
1312 | return 0; | |
22c3a6ca GB |
1313 | } |
1314 | ||
9d874aec | 1315 | static int fd_set_attribute(Item *item, int fd, const char *path, const struct stat *st) { |
936f6bdb | 1316 | _cleanup_close_ int procfs_fd = -1; |
b206ac8e | 1317 | struct stat stbuf; |
88ec4dfa LP |
1318 | unsigned f; |
1319 | int r; | |
22c3a6ca | 1320 | |
4dc7bfdf | 1321 | assert(item); |
b4b0f87c | 1322 | assert(fd >= 0); |
4dc7bfdf FB |
1323 | assert(path); |
1324 | ||
88ec4dfa | 1325 | if (!item->attribute_set || item->attribute_mask == 0) |
22c3a6ca | 1326 | return 0; |
22c3a6ca | 1327 | |
b206ac8e FB |
1328 | if (!st) { |
1329 | if (fstat(fd, &stbuf) < 0) | |
1330 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
1331 | st = &stbuf; | |
1332 | } | |
1333 | ||
88ec4dfa LP |
1334 | /* Issuing the file attribute ioctls on device nodes is not |
1335 | * safe, as that will be delivered to the drivers, not the | |
1336 | * file system containing the device node. */ | |
baaa35ad ZJS |
1337 | if (!S_ISREG(st->st_mode) && !S_ISDIR(st->st_mode)) |
1338 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1339 | "Setting file flags is only supported on regular files and directories, cannot set on '%s'.", | |
1340 | path); | |
88ec4dfa LP |
1341 | |
1342 | f = item->attribute_value & item->attribute_mask; | |
1343 | ||
1344 | /* Mask away directory-specific flags */ | |
936f6bdb | 1345 | if (!S_ISDIR(st->st_mode)) |
22c3a6ca | 1346 | f &= ~FS_DIRSYNC_FL; |
88ec4dfa | 1347 | |
f2324783 | 1348 | procfs_fd = fd_reopen(fd, O_RDONLY|O_CLOEXEC|O_NOATIME); |
936f6bdb | 1349 | if (procfs_fd < 0) |
c3e03778 | 1350 | return log_error_errno(procfs_fd, "Failed to re-open '%s': %m", path); |
936f6bdb | 1351 | |
94566540 | 1352 | unsigned previous, current; |
c1631ee1 | 1353 | r = chattr_full(NULL, procfs_fd, f, item->attribute_mask, &previous, ¤t, CHATTR_FALLBACK_BITWISE); |
94566540 | 1354 | if (r == -ENOANO) |
d1a61dfa | 1355 | log_warning("Cannot set file attributes for '%s', maybe due to incompatibility in specified attributes, " |
94566540 YW |
1356 | "previous=0x%08x, current=0x%08x, expected=0x%08x, ignoring.", |
1357 | path, previous, current, (previous & ~item->attribute_mask) | (f & item->attribute_mask)); | |
1358 | else if (r < 0) | |
1359 | log_full_errno(ERRNO_IS_NOT_SUPPORTED(r) ? LOG_DEBUG : LOG_WARNING, r, | |
1360 | "Cannot set file attributes for '%s', value=0x%08x, mask=0x%08x, ignoring: %m", | |
ad75a97f | 1361 | path, item->attribute_value, item->attribute_mask); |
22c3a6ca GB |
1362 | |
1363 | return 0; | |
1364 | } | |
1365 | ||
936f6bdb FB |
1366 | static int path_set_attribute(Item *item, const char *path) { |
1367 | _cleanup_close_ int fd = -1; | |
936f6bdb FB |
1368 | |
1369 | if (!item->attribute_set || item->attribute_mask == 0) | |
1370 | return 0; | |
1371 | ||
addc3e30 | 1372 | fd = path_open_safe(path); |
936f6bdb | 1373 | if (fd < 0) |
addc3e30 | 1374 | return fd; |
936f6bdb | 1375 | |
9d874aec | 1376 | return fd_set_attribute(item, fd, path, NULL); |
936f6bdb FB |
1377 | } |
1378 | ||
d4e9eb91 | 1379 | static int write_one_file(Item *i, const char *path) { |
551470ec FB |
1380 | _cleanup_close_ int fd = -1, dir_fd = -1; |
1381 | char *bn; | |
1baaf8aa | 1382 | int r; |
31c84ff1 FB |
1383 | |
1384 | assert(i); | |
1385 | assert(path); | |
1386 | assert(i->argument); | |
1387 | assert(i->type == WRITE_FILE); | |
1388 | ||
551470ec FB |
1389 | /* Validate the path and keep the fd on the directory for opening the |
1390 | * file so we're sure that it can't be changed behind our back. */ | |
1391 | dir_fd = path_open_parent_safe(path); | |
1392 | if (dir_fd < 0) | |
1393 | return dir_fd; | |
1394 | ||
1395 | bn = basename(path); | |
1396 | ||
31c84ff1 | 1397 | /* Follows symlinks */ |
1baaf8aa LP |
1398 | fd = openat(dir_fd, bn, |
1399 | O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY|(i->append_or_force ? O_APPEND : 0), | |
1400 | i->mode); | |
31c84ff1 FB |
1401 | if (fd < 0) { |
1402 | if (errno == ENOENT) { | |
1403 | log_debug_errno(errno, "Not writing missing file \"%s\": %m", path); | |
1404 | return 0; | |
1405 | } | |
1baaf8aa LP |
1406 | |
1407 | if (i->allow_failure) | |
1408 | return log_debug_errno(errno, "Failed to open file \"%s\", ignoring: %m", path); | |
1409 | ||
31c84ff1 FB |
1410 | return log_error_errno(errno, "Failed to open file \"%s\": %m", path); |
1411 | } | |
1412 | ||
1413 | /* 'w' is allowed to write into any kind of files. */ | |
1414 | log_debug("Writing to \"%s\".", path); | |
1415 | ||
1416 | r = loop_write(fd, i->argument, strlen(i->argument), false); | |
1417 | if (r < 0) | |
1418 | return log_error_errno(r, "Failed to write file \"%s\": %m", path); | |
1419 | ||
9d874aec | 1420 | return fd_set_perms(i, fd, path, NULL); |
31c84ff1 FB |
1421 | } |
1422 | ||
1423 | static int create_file(Item *i, const char *path) { | |
5ec9d065 FB |
1424 | _cleanup_close_ int fd = -1, dir_fd = -1; |
1425 | struct stat stbuf, *st = NULL; | |
1426 | int r = 0; | |
1427 | char *bn; | |
d4e9eb91 | 1428 | |
874f1947 LP |
1429 | assert(i); |
1430 | assert(path); | |
5ec9d065 FB |
1431 | assert(i->type == CREATE_FILE); |
1432 | ||
1433 | /* 'f' operates on regular files exclusively. */ | |
1434 | ||
1435 | /* Validate the path and keep the fd on the directory for opening the | |
1436 | * file so we're sure that it can't be changed behind our back. */ | |
1437 | dir_fd = path_open_parent_safe(path); | |
1438 | if (dir_fd < 0) | |
1439 | return dir_fd; | |
874f1947 | 1440 | |
5ec9d065 | 1441 | bn = basename(path); |
d4e9eb91 | 1442 | |
43ad6e31 | 1443 | RUN_WITH_UMASK(0000) { |
ecabcf8b | 1444 | mac_selinux_create_file_prepare(path, S_IFREG); |
5ec9d065 | 1445 | fd = openat(dir_fd, bn, O_CREAT|O_EXCL|O_NOFOLLOW|O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode); |
ecabcf8b | 1446 | mac_selinux_create_file_clear(); |
5c0d398d | 1447 | } |
d4e9eb91 DR |
1448 | |
1449 | if (fd < 0) { | |
5ec9d065 FB |
1450 | /* Even on a read-only filesystem, open(2) returns EEXIST if the |
1451 | * file already exists. It returns EROFS only if it needs to | |
1452 | * create the file. */ | |
1453 | if (errno != EEXIST) | |
1454 | return log_error_errno(errno, "Failed to create file %s: %m", path); | |
1455 | ||
1456 | /* Re-open the file. At that point it must exist since open(2) | |
1457 | * failed with EEXIST. We still need to check if the perms/mode | |
1458 | * need to be changed. For read-only filesystems, we let | |
1459 | * fd_set_perms() report the error if the perms need to be | |
1460 | * modified. */ | |
1461 | fd = openat(dir_fd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH, i->mode); | |
1462 | if (fd < 0) | |
1463 | return log_error_errno(errno, "Failed to re-open file %s: %m", path); | |
1464 | ||
1465 | if (fstat(fd, &stbuf) < 0) | |
1466 | return log_error_errno(errno, "stat(%s) failed: %m", path); | |
1467 | ||
d7a0f1f4 FS |
1468 | if (!S_ISREG(stbuf.st_mode)) |
1469 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
1470 | "%s exists and is not a regular file.", | |
1471 | path); | |
d4e9eb91 | 1472 | |
5ec9d065 FB |
1473 | st = &stbuf; |
1474 | } else { | |
1475 | ||
1476 | log_debug("\"%s\" has been created.", path); | |
1477 | ||
1478 | if (i->argument) { | |
1479 | log_debug("Writing to \"%s\".", path); | |
f44b28fd | 1480 | |
5ec9d065 FB |
1481 | r = loop_write(fd, i->argument, strlen(i->argument), false); |
1482 | if (r < 0) | |
1483 | return log_error_errno(r, "Failed to write file \"%s\": %m", path); | |
1484 | } | |
d4e9eb91 DR |
1485 | } |
1486 | ||
9d874aec | 1487 | return fd_set_perms(i, fd, path, st); |
5ec9d065 | 1488 | } |
d4e9eb91 | 1489 | |
5ec9d065 | 1490 | static int truncate_file(Item *i, const char *path) { |
14ab804e | 1491 | _cleanup_close_ int fd = -1, dir_fd = -1; |
5ec9d065 FB |
1492 | struct stat stbuf, *st = NULL; |
1493 | bool erofs = false; | |
1494 | int r = 0; | |
14ab804e | 1495 | char *bn; |
5ec9d065 FB |
1496 | |
1497 | assert(i); | |
1498 | assert(path); | |
eccebf4b | 1499 | assert(i->type == TRUNCATE_FILE || (i->type == CREATE_FILE && i->append_or_force)); |
d4e9eb91 | 1500 | |
5ec9d065 FB |
1501 | /* We want to operate on regular file exclusively especially since |
1502 | * O_TRUNC is unspecified if the file is neither a regular file nor a | |
1503 | * fifo nor a terminal device. Therefore we first open the file and make | |
1504 | * sure it's a regular one before truncating it. */ | |
3612fbc1 | 1505 | |
14ab804e FB |
1506 | /* Validate the path and keep the fd on the directory for opening the |
1507 | * file so we're sure that it can't be changed behind our back. */ | |
1508 | dir_fd = path_open_parent_safe(path); | |
1509 | if (dir_fd < 0) | |
1510 | return dir_fd; | |
1511 | ||
1512 | bn = basename(path); | |
1513 | ||
5ec9d065 FB |
1514 | RUN_WITH_UMASK(0000) { |
1515 | mac_selinux_create_file_prepare(path, S_IFREG); | |
14ab804e | 1516 | fd = openat(dir_fd, bn, O_CREAT|O_NOFOLLOW|O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode); |
5ec9d065 FB |
1517 | mac_selinux_create_file_clear(); |
1518 | } | |
1519 | ||
1520 | if (fd < 0) { | |
1521 | if (errno != EROFS) | |
1522 | return log_error_errno(errno, "Failed to open/create file %s: %m", path); | |
1523 | ||
1524 | /* On a read-only filesystem, we don't want to fail if the | |
1525 | * target is already empty and the perms are set. So we still | |
1526 | * proceed with the sanity checks and let the remaining | |
1527 | * operations fail with EROFS if they try to modify the target | |
1528 | * file. */ | |
1529 | ||
14ab804e | 1530 | fd = openat(dir_fd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH, i->mode); |
5ec9d065 | 1531 | if (fd < 0) { |
d7a0f1f4 FS |
1532 | if (errno == ENOENT) |
1533 | return log_error_errno(SYNTHETIC_ERRNO(EROFS), | |
1534 | "Cannot create file %s on a read-only file system.", | |
1535 | path); | |
5ec9d065 FB |
1536 | |
1537 | return log_error_errno(errno, "Failed to re-open file %s: %m", path); | |
1538 | } | |
1539 | ||
1540 | erofs = true; | |
1541 | } | |
1542 | ||
1543 | if (fstat(fd, &stbuf) < 0) | |
4a62c710 | 1544 | return log_error_errno(errno, "stat(%s) failed: %m", path); |
d4e9eb91 | 1545 | |
d7a0f1f4 FS |
1546 | if (!S_ISREG(stbuf.st_mode)) |
1547 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
1548 | "%s exists and is not a regular file.", | |
1549 | path); | |
d4e9eb91 | 1550 | |
5ec9d065 FB |
1551 | if (stbuf.st_size > 0) { |
1552 | if (ftruncate(fd, 0) < 0) { | |
1553 | r = erofs ? -EROFS : -errno; | |
1554 | return log_error_errno(r, "Failed to truncate file %s: %m", path); | |
1555 | } | |
1556 | } else | |
1557 | st = &stbuf; | |
d4e9eb91 | 1558 | |
5ec9d065 FB |
1559 | log_debug("\"%s\" has been created.", path); |
1560 | ||
1561 | if (i->argument) { | |
1562 | log_debug("Writing to \"%s\".", path); | |
1563 | ||
1564 | r = loop_write(fd, i->argument, strlen(i->argument), false); | |
1565 | if (r < 0) { | |
1566 | r = erofs ? -EROFS : r; | |
1567 | return log_error_errno(r, "Failed to write file %s: %m", path); | |
1568 | } | |
1569 | } | |
1570 | ||
9d874aec | 1571 | return fd_set_perms(i, fd, path, st); |
d4e9eb91 DR |
1572 | } |
1573 | ||
b1f7b17f | 1574 | static int copy_files(Item *i) { |
16ba55ad FB |
1575 | _cleanup_close_ int dfd = -1, fd = -1; |
1576 | char *bn; | |
b1f7b17f FB |
1577 | int r; |
1578 | ||
1579 | log_debug("Copying tree \"%s\" to \"%s\".", i->argument, i->path); | |
1580 | ||
16ba55ad | 1581 | bn = basename(i->path); |
b1f7b17f | 1582 | |
16ba55ad FB |
1583 | /* Validate the path and use the returned directory fd for copying the |
1584 | * target so we're sure that the path can't be changed behind our | |
1585 | * back. */ | |
1586 | dfd = path_open_parent_safe(i->path); | |
1587 | if (dfd < 0) | |
1588 | return dfd; | |
b1f7b17f | 1589 | |
16ba55ad FB |
1590 | r = copy_tree_at(AT_FDCWD, i->argument, |
1591 | dfd, bn, | |
1592 | i->uid_set ? i->uid : UID_INVALID, | |
1593 | i->gid_set ? i->gid : GID_INVALID, | |
652d9040 | 1594 | COPY_REFLINK | COPY_MERGE_EMPTY | COPY_MAC_CREATE | COPY_HARDLINKS); |
b1f7b17f FB |
1595 | if (r < 0) { |
1596 | struct stat a, b; | |
1597 | ||
16ba55ad FB |
1598 | /* If the target already exists on read-only filesystems, trying |
1599 | * to create the target will not fail with EEXIST but with | |
1600 | * EROFS. */ | |
1601 | if (r == -EROFS && faccessat(dfd, bn, F_OK, AT_SYMLINK_NOFOLLOW) == 0) | |
1602 | r = -EEXIST; | |
1603 | ||
b1f7b17f FB |
1604 | if (r != -EEXIST) |
1605 | return log_error_errno(r, "Failed to copy files to %s: %m", i->path); | |
1606 | ||
1607 | if (stat(i->argument, &a) < 0) | |
1608 | return log_error_errno(errno, "stat(%s) failed: %m", i->argument); | |
1609 | ||
16ba55ad | 1610 | if (fstatat(dfd, bn, &b, AT_SYMLINK_NOFOLLOW) < 0) |
b1f7b17f FB |
1611 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); |
1612 | ||
1613 | if ((a.st_mode ^ b.st_mode) & S_IFMT) { | |
1614 | log_debug("Can't copy to %s, file exists already and is of different type", i->path); | |
1615 | return 0; | |
1616 | } | |
1617 | } | |
1618 | ||
16ba55ad FB |
1619 | fd = openat(dfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1620 | if (fd < 0) | |
1621 | return log_error_errno(errno, "Failed to openat(%s): %m", i->path); | |
1622 | ||
9d874aec | 1623 | return fd_set_perms(i, fd, i->path, NULL); |
b1f7b17f FB |
1624 | } |
1625 | ||
074bd73f FB |
1626 | typedef enum { |
1627 | CREATION_NORMAL, | |
1628 | CREATION_EXISTING, | |
1629 | CREATION_FORCE, | |
1630 | _CREATION_MODE_MAX, | |
2d93c20e | 1631 | _CREATION_MODE_INVALID = -EINVAL, |
074bd73f FB |
1632 | } CreationMode; |
1633 | ||
b82f71c7 | 1634 | static const char *const creation_mode_verb_table[_CREATION_MODE_MAX] = { |
074bd73f FB |
1635 | [CREATION_NORMAL] = "Created", |
1636 | [CREATION_EXISTING] = "Found existing", | |
1637 | [CREATION_FORCE] = "Created replacement", | |
1638 | }; | |
1639 | ||
1640 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb, CreationMode); | |
1641 | ||
f17a8d61 | 1642 | static int create_directory_or_subvolume(const char *path, mode_t mode, bool subvol, CreationMode *creation) { |
4c39d899 | 1643 | _cleanup_close_ int pfd = -1; |
f17a8d61 | 1644 | CreationMode c; |
4c39d899 | 1645 | int r; |
4ad36844 | 1646 | |
4c39d899 | 1647 | assert(path); |
4ad36844 | 1648 | |
f17a8d61 FB |
1649 | if (!creation) |
1650 | creation = &c; | |
1651 | ||
4c39d899 FB |
1652 | pfd = path_open_parent_safe(path); |
1653 | if (pfd < 0) | |
1654 | return pfd; | |
4ad36844 | 1655 | |
4c39d899 | 1656 | if (subvol) { |
4368c60c AV |
1657 | r = getenv_bool("SYSTEMD_TMPFILES_FORCE_SUBVOL"); |
1658 | if (r < 0) { | |
1659 | if (r != -ENXIO) /* env var is unset */ | |
1660 | log_warning_errno(r, "Cannot parse value of $SYSTEMD_TMPFILES_FORCE_SUBVOL, ignoring."); | |
1661 | r = btrfs_is_subvol(empty_to_root(arg_root)) > 0; | |
1662 | } | |
1663 | if (!r) | |
4ad36844 FB |
1664 | /* Don't create a subvolume unless the root directory is |
1665 | * one, too. We do this under the assumption that if the | |
1666 | * root directory is just a plain directory (i.e. very | |
1667 | * light-weight), we shouldn't try to split it up into | |
1668 | * subvolumes (i.e. more heavy-weight). Thus, chroot() | |
1669 | * environments and suchlike will get a full brtfs | |
1670 | * subvolume set up below their tree only if they | |
1671 | * specifically set up a btrfs subvolume for the root | |
1672 | * dir too. */ | |
1673 | ||
4c39d899 | 1674 | subvol = false; |
4ad36844 | 1675 | else { |
4c39d899 FB |
1676 | RUN_WITH_UMASK((~mode) & 0777) |
1677 | r = btrfs_subvol_make_fd(pfd, basename(path)); | |
4ad36844 FB |
1678 | } |
1679 | } else | |
1680 | r = 0; | |
1681 | ||
4c39d899 | 1682 | if (!subvol || r == -ENOTTY) |
4ad36844 | 1683 | RUN_WITH_UMASK(0000) |
4c39d899 | 1684 | r = mkdirat_label(pfd, basename(path), mode); |
4ad36844 FB |
1685 | |
1686 | if (r < 0) { | |
1687 | int k; | |
1688 | ||
1689 | if (!IN_SET(r, -EEXIST, -EROFS)) | |
4c39d899 | 1690 | return log_error_errno(r, "Failed to create directory or subvolume \"%s\": %m", path); |
4ad36844 | 1691 | |
4c39d899 | 1692 | k = is_dir_fd(pfd); |
4ad36844 | 1693 | if (k == -ENOENT && r == -EROFS) |
4c39d899 | 1694 | return log_error_errno(r, "%s does not exist and cannot be created as the file system is read-only.", path); |
4ad36844 | 1695 | if (k < 0) |
4c39d899 | 1696 | return log_error_errno(k, "Failed to check if %s exists: %m", path); |
b88ba6c7 ZJS |
1697 | if (!k) |
1698 | return log_warning_errno(SYNTHETIC_ERRNO(EEXIST), | |
1699 | "\"%s\" already exists and is not a directory.", path); | |
4ad36844 | 1700 | |
f17a8d61 | 1701 | *creation = CREATION_EXISTING; |
4ad36844 | 1702 | } else |
f17a8d61 | 1703 | *creation = CREATION_NORMAL; |
4ad36844 | 1704 | |
f17a8d61 | 1705 | log_debug("%s directory \"%s\".", creation_mode_verb_to_string(*creation), path); |
4c39d899 FB |
1706 | |
1707 | r = openat(pfd, basename(path), O_NOCTTY|O_CLOEXEC|O_DIRECTORY); | |
1708 | if (r < 0) | |
09f12798 LP |
1709 | return log_error_errno(errno, "Failed to open directory '%s': %m", basename(path)); |
1710 | ||
4c39d899 FB |
1711 | return r; |
1712 | } | |
1713 | ||
1714 | static int create_directory(Item *i, const char *path) { | |
1715 | _cleanup_close_ int fd = -1; | |
1716 | ||
1717 | assert(i); | |
1718 | assert(IN_SET(i->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY)); | |
1719 | ||
f17a8d61 | 1720 | fd = create_directory_or_subvolume(path, i->mode, false, NULL); |
4c39d899 FB |
1721 | if (fd == -EEXIST) |
1722 | return 0; | |
1723 | if (fd < 0) | |
1724 | return fd; | |
1725 | ||
9d874aec | 1726 | return fd_set_perms(i, fd, path, NULL); |
4c39d899 FB |
1727 | } |
1728 | ||
1729 | static int create_subvolume(Item *i, const char *path) { | |
1730 | _cleanup_close_ int fd = -1; | |
f17a8d61 | 1731 | CreationMode creation; |
4c39d899 FB |
1732 | int r, q = 0; |
1733 | ||
1734 | assert(i); | |
1735 | assert(IN_SET(i->type, CREATE_SUBVOLUME, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)); | |
1736 | ||
f17a8d61 | 1737 | fd = create_directory_or_subvolume(path, i->mode, true, &creation); |
4c39d899 FB |
1738 | if (fd == -EEXIST) |
1739 | return 0; | |
1740 | if (fd < 0) | |
1741 | return fd; | |
4ad36844 | 1742 | |
f17a8d61 FB |
1743 | if (creation == CREATION_NORMAL && |
1744 | IN_SET(i->type, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)) { | |
4c39d899 | 1745 | r = btrfs_subvol_auto_qgroup_fd(fd, 0, i->type == CREATE_SUBVOLUME_NEW_QUOTA); |
4ad36844 FB |
1746 | if (r == -ENOTTY) |
1747 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (unsupported fs or dir not a subvolume): %m", i->path); | |
1748 | else if (r == -EROFS) | |
1749 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (fs is read-only).", i->path); | |
4b019d2f | 1750 | else if (r == -ENOTCONN) |
4ad36844 FB |
1751 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (quota support is disabled).", i->path); |
1752 | else if (r < 0) | |
1753 | q = log_error_errno(r, "Failed to adjust quota for subvolume \"%s\": %m", i->path); | |
1754 | else if (r > 0) | |
1755 | log_debug("Adjusted quota for subvolume \"%s\".", i->path); | |
1756 | else if (r == 0) | |
1757 | log_debug("Quota for subvolume \"%s\" already in place, no change made.", i->path); | |
1758 | } | |
1759 | ||
9d874aec LP |
1760 | r = fd_set_perms(i, fd, path, NULL); |
1761 | if (q < 0) /* prefer the quota change error from above */ | |
4ad36844 FB |
1762 | return q; |
1763 | ||
1764 | return r; | |
1765 | } | |
1766 | ||
54946021 FB |
1767 | static int empty_directory(Item *i, const char *path) { |
1768 | int r; | |
1769 | ||
1770 | assert(i); | |
1771 | assert(i->type == EMPTY_DIRECTORY); | |
1772 | ||
1773 | r = is_dir(path, false); | |
1774 | if (r == -ENOENT) { | |
1775 | /* Option "e" operates only on existing objects. Do not | |
1776 | * print errors about non-existent files or directories */ | |
1777 | log_debug("Skipping missing directory: %s", path); | |
1778 | return 0; | |
1779 | } | |
1780 | if (r < 0) | |
1781 | return log_error_errno(r, "is_dir() failed on path %s: %m", path); | |
b88ba6c7 ZJS |
1782 | if (r == 0) { |
1783 | log_warning("\"%s\" already exists and is not a directory.", path); | |
1784 | return 0; | |
1785 | } | |
54946021 FB |
1786 | |
1787 | return path_set_perms(i, path); | |
1788 | } | |
1789 | ||
074bd73f | 1790 | static int create_device(Item *i, mode_t file_type) { |
c7700a77 | 1791 | _cleanup_close_ int dfd = -1, fd = -1; |
074bd73f | 1792 | CreationMode creation; |
c7700a77 | 1793 | char *bn; |
074bd73f FB |
1794 | int r; |
1795 | ||
1796 | assert(i); | |
1797 | assert(IN_SET(file_type, S_IFBLK, S_IFCHR)); | |
1798 | ||
c7700a77 FB |
1799 | bn = basename(i->path); |
1800 | ||
1801 | /* Validate the path and use the returned directory fd for copying the | |
1802 | * target so we're sure that the path can't be changed behind our | |
1803 | * back. */ | |
1804 | dfd = path_open_parent_safe(i->path); | |
1805 | if (dfd < 0) | |
1806 | return dfd; | |
1807 | ||
074bd73f FB |
1808 | RUN_WITH_UMASK(0000) { |
1809 | mac_selinux_create_file_prepare(i->path, file_type); | |
c7700a77 | 1810 | r = mknodat(dfd, bn, i->mode | file_type, i->major_minor); |
074bd73f FB |
1811 | mac_selinux_create_file_clear(); |
1812 | } | |
1813 | ||
1814 | if (r < 0) { | |
c7700a77 FB |
1815 | struct stat st; |
1816 | ||
074bd73f FB |
1817 | if (errno == EPERM) { |
1818 | log_debug("We lack permissions, possibly because of cgroup configuration; " | |
1819 | "skipping creation of device node %s.", i->path); | |
1820 | return 0; | |
1821 | } | |
1822 | ||
1823 | if (errno != EEXIST) | |
1824 | return log_error_errno(errno, "Failed to create device node %s: %m", i->path); | |
1825 | ||
c7700a77 | 1826 | if (fstatat(dfd, bn, &st, 0) < 0) |
074bd73f FB |
1827 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); |
1828 | ||
1829 | if ((st.st_mode & S_IFMT) != file_type) { | |
1830 | ||
c55ac248 | 1831 | if (i->append_or_force) { |
074bd73f FB |
1832 | |
1833 | RUN_WITH_UMASK(0000) { | |
1834 | mac_selinux_create_file_prepare(i->path, file_type); | |
c7700a77 | 1835 | /* FIXME: need to introduce mknodat_atomic() */ |
074bd73f FB |
1836 | r = mknod_atomic(i->path, i->mode | file_type, i->major_minor); |
1837 | mac_selinux_create_file_clear(); | |
1838 | } | |
1839 | ||
1840 | if (r < 0) | |
1841 | return log_error_errno(r, "Failed to create device node \"%s\": %m", i->path); | |
1842 | creation = CREATION_FORCE; | |
1843 | } else { | |
b88ba6c7 | 1844 | log_warning("\"%s\" already exists is not a device node.", i->path); |
074bd73f FB |
1845 | return 0; |
1846 | } | |
1847 | } else | |
1848 | creation = CREATION_EXISTING; | |
1849 | } else | |
1850 | creation = CREATION_NORMAL; | |
1851 | ||
1852 | log_debug("%s %s device node \"%s\" %u:%u.", | |
1853 | creation_mode_verb_to_string(creation), | |
1854 | i->type == CREATE_BLOCK_DEVICE ? "block" : "char", | |
1855 | i->path, major(i->mode), minor(i->mode)); | |
1856 | ||
c7700a77 FB |
1857 | fd = openat(dfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1858 | if (fd < 0) | |
1859 | return log_error_errno(errno, "Failed to openat(%s): %m", i->path); | |
1860 | ||
9d874aec | 1861 | return fd_set_perms(i, fd, i->path, NULL); |
074bd73f FB |
1862 | } |
1863 | ||
a2fc2f8d | 1864 | static int create_fifo(Item *i, const char *path) { |
7ea5a87f | 1865 | _cleanup_close_ int pfd = -1, fd = -1; |
a2fc2f8d FB |
1866 | CreationMode creation; |
1867 | struct stat st; | |
7ea5a87f | 1868 | char *bn; |
a2fc2f8d FB |
1869 | int r; |
1870 | ||
7ea5a87f FB |
1871 | pfd = path_open_parent_safe(path); |
1872 | if (pfd < 0) | |
1873 | return pfd; | |
1874 | ||
1875 | bn = basename(path); | |
1876 | ||
a2fc2f8d FB |
1877 | RUN_WITH_UMASK(0000) { |
1878 | mac_selinux_create_file_prepare(path, S_IFIFO); | |
7ea5a87f | 1879 | r = mkfifoat(pfd, bn, i->mode); |
a2fc2f8d FB |
1880 | mac_selinux_create_file_clear(); |
1881 | } | |
1882 | ||
1883 | if (r < 0) { | |
1884 | if (errno != EEXIST) | |
1885 | return log_error_errno(errno, "Failed to create fifo %s: %m", path); | |
1886 | ||
7ea5a87f | 1887 | if (fstatat(pfd, bn, &st, AT_SYMLINK_NOFOLLOW) < 0) |
a2fc2f8d FB |
1888 | return log_error_errno(errno, "stat(%s) failed: %m", path); |
1889 | ||
1890 | if (!S_ISFIFO(st.st_mode)) { | |
1891 | ||
c55ac248 | 1892 | if (i->append_or_force) { |
a2fc2f8d FB |
1893 | RUN_WITH_UMASK(0000) { |
1894 | mac_selinux_create_file_prepare(path, S_IFIFO); | |
7ea5a87f | 1895 | r = mkfifoat_atomic(pfd, bn, i->mode); |
a2fc2f8d FB |
1896 | mac_selinux_create_file_clear(); |
1897 | } | |
1898 | ||
1899 | if (r < 0) | |
1900 | return log_error_errno(r, "Failed to create fifo %s: %m", path); | |
1901 | creation = CREATION_FORCE; | |
1902 | } else { | |
1903 | log_warning("\"%s\" already exists and is not a fifo.", path); | |
1904 | return 0; | |
1905 | } | |
1906 | } else | |
1907 | creation = CREATION_EXISTING; | |
1908 | } else | |
1909 | creation = CREATION_NORMAL; | |
7ea5a87f | 1910 | |
a2fc2f8d FB |
1911 | log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation), path); |
1912 | ||
7ea5a87f FB |
1913 | fd = openat(pfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1914 | if (fd < 0) | |
a5df05ff | 1915 | return log_error_errno(errno, "Failed to openat(%s): %m", path); |
7ea5a87f | 1916 | |
9d874aec | 1917 | return fd_set_perms(i, fd, i->path, NULL); |
a2fc2f8d FB |
1918 | } |
1919 | ||
9d874aec LP |
1920 | typedef int (*action_t)(Item *i, const char *path); |
1921 | typedef int (*fdaction_t)(Item *i, int fd, const char *path, const struct stat *st); | |
081043cf | 1922 | |
9d874aec | 1923 | static int item_do(Item *i, int fd, const char *path, fdaction_t action) { |
14f3480a | 1924 | struct stat st; |
936f6bdb | 1925 | int r = 0, q; |
e73a03e0 LP |
1926 | |
1927 | assert(i); | |
4dc7bfdf | 1928 | assert(path); |
936f6bdb | 1929 | assert(fd >= 0); |
14f3480a FB |
1930 | |
1931 | if (fstat(fd, &st) < 0) { | |
09f12798 | 1932 | r = log_error_errno(errno, "fstat() on file failed: %m"); |
14f3480a FB |
1933 | goto finish; |
1934 | } | |
a8d88783 MS |
1935 | |
1936 | /* This returns the first error we run into, but nevertheless | |
1937 | * tries to go on */ | |
9d874aec | 1938 | r = action(i, fd, path, &st); |
a8d88783 | 1939 | |
14f3480a | 1940 | if (S_ISDIR(st.st_mode)) { |
22dd8d35 | 1941 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
936f6bdb FB |
1942 | _cleanup_closedir_ DIR *d = NULL; |
1943 | struct dirent *de; | |
a8d88783 | 1944 | |
936f6bdb FB |
1945 | /* The passed 'fd' was opened with O_PATH. We need to convert |
1946 | * it into a 'regular' fd before reading the directory content. */ | |
1947 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); | |
a8d88783 | 1948 | |
936f6bdb FB |
1949 | d = opendir(procfs_path); |
1950 | if (!d) { | |
09f12798 LP |
1951 | log_error_errno(errno, "Failed to opendir() '%s': %m", procfs_path); |
1952 | if (r == 0) | |
1953 | r = -errno; | |
936f6bdb FB |
1954 | goto finish; |
1955 | } | |
a8d88783 | 1956 | |
936f6bdb | 1957 | FOREACH_DIRENT_ALL(de, d, q = -errno; goto finish) { |
936f6bdb | 1958 | int de_fd; |
a8d88783 | 1959 | |
936f6bdb FB |
1960 | if (dot_or_dot_dot(de->d_name)) |
1961 | continue; | |
1962 | ||
1963 | de_fd = openat(fd, de->d_name, O_NOFOLLOW|O_CLOEXEC|O_PATH); | |
9d874aec LP |
1964 | if (de_fd < 0) |
1965 | q = log_error_errno(errno, "Failed to open() file '%s': %m", de->d_name); | |
4dc7bfdf FB |
1966 | else { |
1967 | _cleanup_free_ char *de_path = NULL; | |
1968 | ||
62a85ee0 | 1969 | de_path = path_join(path, de->d_name); |
4dc7bfdf FB |
1970 | if (!de_path) |
1971 | q = log_oom(); | |
1972 | else | |
1973 | /* Pass ownership of dirent fd over */ | |
1974 | q = item_do(i, de_fd, de_path, action); | |
1975 | } | |
a8d88783 | 1976 | |
e73a03e0 LP |
1977 | if (q < 0 && r == 0) |
1978 | r = q; | |
a8d88783 | 1979 | } |
a8d88783 | 1980 | } |
936f6bdb FB |
1981 | finish: |
1982 | safe_close(fd); | |
e73a03e0 | 1983 | return r; |
a8d88783 MS |
1984 | } |
1985 | ||
936f6bdb | 1986 | static int glob_item(Item *i, action_t action) { |
df99a9ef | 1987 | _cleanup_globfree_ glob_t g = { |
ebf31a1f | 1988 | .gl_opendir = (void *(*)(const char *)) opendir_nomod, |
df99a9ef | 1989 | }; |
e73a03e0 | 1990 | int r = 0, k; |
99e68c0b MS |
1991 | char **fn; |
1992 | ||
84e72b5e ZJS |
1993 | k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g); |
1994 | if (k < 0 && k != -ENOENT) | |
1995 | return log_error_errno(k, "glob(%s) failed: %m", i->path); | |
99e68c0b | 1996 | |
c84a9488 ZJS |
1997 | STRV_FOREACH(fn, g.gl_pathv) { |
1998 | k = action(i, *fn); | |
e73a03e0 | 1999 | if (k < 0 && r == 0) |
99e68c0b | 2000 | r = k; |
936f6bdb FB |
2001 | } |
2002 | ||
2003 | return r; | |
2004 | } | |
081043cf | 2005 | |
936f6bdb FB |
2006 | static int glob_item_recursively(Item *i, fdaction_t action) { |
2007 | _cleanup_globfree_ glob_t g = { | |
2008 | .gl_opendir = (void *(*)(const char *)) opendir_nomod, | |
2009 | }; | |
2010 | int r = 0, k; | |
2011 | char **fn; | |
2012 | ||
2013 | k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g); | |
2014 | if (k < 0 && k != -ENOENT) | |
2015 | return log_error_errno(k, "glob(%s) failed: %m", i->path); | |
2016 | ||
2017 | STRV_FOREACH(fn, g.gl_pathv) { | |
2018 | _cleanup_close_ int fd = -1; | |
936f6bdb FB |
2019 | |
2020 | /* Make sure we won't trigger/follow file object (such as | |
2021 | * device nodes, automounts, ...) pointed out by 'fn' with | |
2022 | * O_PATH. Note, when O_PATH is used, flags other than | |
2023 | * O_CLOEXEC, O_DIRECTORY, and O_NOFOLLOW are ignored. */ | |
2024 | ||
2025 | fd = open(*fn, O_CLOEXEC|O_NOFOLLOW|O_PATH); | |
2026 | if (fd < 0) { | |
09f12798 LP |
2027 | log_error_errno(errno, "Opening '%s' failed: %m", *fn); |
2028 | if (r == 0) | |
2029 | r = -errno; | |
936f6bdb FB |
2030 | continue; |
2031 | } | |
2032 | ||
9d874aec | 2033 | k = item_do(i, fd, *fn, action); |
936f6bdb FB |
2034 | if (k < 0 && r == 0) |
2035 | r = k; | |
2036 | ||
2037 | /* we passed fd ownership to the previous call */ | |
2038 | fd = -1; | |
c84a9488 | 2039 | } |
99e68c0b | 2040 | |
99e68c0b MS |
2041 | return r; |
2042 | } | |
2043 | ||
c46c3233 AW |
2044 | static int rm_if_wrong_type_safe( |
2045 | mode_t mode, | |
2046 | int parent_fd, | |
21e43a7c | 2047 | const struct stat *parent_st, /* Only used if follow_links below is true. */ |
c46c3233 AW |
2048 | const char *name, |
2049 | int flags) { | |
2050 | _cleanup_free_ char *parent_name = NULL; | |
2051 | bool follow_links = !FLAGS_SET(flags, AT_SYMLINK_NOFOLLOW); | |
2052 | struct stat st; | |
2053 | int r; | |
2054 | ||
2055 | assert(name); | |
2056 | assert((mode & ~S_IFMT) == 0); | |
2057 | assert(!follow_links || parent_st); | |
2058 | assert((flags & ~AT_SYMLINK_NOFOLLOW) == 0); | |
2059 | ||
2060 | if (!filename_is_valid(name)) | |
2061 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "\"%s\" is not a valid filename.", name); | |
2062 | ||
2063 | r = fstatat_harder(parent_fd, name, &st, flags, REMOVE_CHMOD | REMOVE_CHMOD_RESTORE); | |
2064 | if (r < 0) { | |
2065 | (void) fd_get_path(parent_fd, &parent_name); | |
2066 | return log_full_errno(r == -ENOENT? LOG_DEBUG : LOG_ERR, r, | |
2067 | "Failed to stat \"%s\" at \"%s\": %m", name, strna(parent_name)); | |
2068 | } | |
2069 | ||
2070 | /* Fail before removing anything if this is an unsafe transition. */ | |
2071 | if (follow_links && unsafe_transition(parent_st, &st)) { | |
2072 | (void) fd_get_path(parent_fd, &parent_name); | |
2073 | return log_error_errno(SYNTHETIC_ERRNO(ENOLINK), | |
2074 | "Unsafe transition from \"%s\" to \"%s\".", parent_name, name); | |
2075 | } | |
2076 | ||
2077 | if ((st.st_mode & S_IFMT) == mode) | |
2078 | return 0; | |
2079 | ||
2080 | (void) fd_get_path(parent_fd, &parent_name); | |
2081 | log_notice("Wrong file type 0x%x; rm -rf \"%s/%s\"", st.st_mode & S_IFMT, strna(parent_name), name); | |
2082 | ||
2083 | /* If the target of the symlink was the wrong type, the link needs to be removed instead of the | |
2084 | * target, so make sure it is identified as a link and not a directory. */ | |
2085 | if (follow_links) { | |
2086 | r = fstatat_harder(parent_fd, name, &st, AT_SYMLINK_NOFOLLOW, REMOVE_CHMOD | REMOVE_CHMOD_RESTORE); | |
2087 | if (r < 0) | |
2088 | return log_error_errno(r, "Failed to stat \"%s\" at \"%s\": %m", name, strna(parent_name)); | |
2089 | } | |
2090 | ||
2091 | /* Do not remove mount points. */ | |
2092 | r = fd_is_mount_point(parent_fd, name, follow_links ? AT_SYMLINK_FOLLOW : 0); | |
2093 | if (r < 0) | |
2094 | (void) log_warning_errno(r, "Failed to check if \"%s/%s\" is a mount point: %m; Continuing", | |
2095 | strna(parent_name), name); | |
2096 | else if (r > 0) | |
2097 | return log_error_errno(SYNTHETIC_ERRNO(EBUSY), | |
2098 | "Not removing \"%s/%s\" because it is a mount point.", strna(parent_name), name); | |
2099 | ||
2100 | if ((st.st_mode & S_IFMT) == S_IFDIR) { | |
2101 | _cleanup_close_ int child_fd = -1; | |
2102 | ||
2103 | child_fd = openat(parent_fd, name, O_NOCTTY | O_CLOEXEC | O_DIRECTORY); | |
2104 | if (child_fd < 0) | |
2105 | return log_error_errno(errno, "Failed to open \"%s\" at \"%s\": %m", name, strna(parent_name)); | |
2106 | ||
2107 | r = rm_rf_children(TAKE_FD(child_fd), REMOVE_ROOT|REMOVE_SUBVOLUME|REMOVE_PHYSICAL, &st); | |
2108 | if (r < 0) | |
2109 | return log_error_errno(r, "Failed to remove contents of \"%s\" at \"%s\": %m", name, strna(parent_name)); | |
2110 | ||
2111 | r = unlinkat_harder(parent_fd, name, AT_REMOVEDIR, REMOVE_CHMOD | REMOVE_CHMOD_RESTORE); | |
2112 | } else | |
2113 | r = unlinkat_harder(parent_fd, name, 0, REMOVE_CHMOD | REMOVE_CHMOD_RESTORE); | |
2114 | if (r < 0) | |
2115 | return log_error_errno(r, "Failed to remove \"%s\" at \"%s\": %m", name, strna(parent_name)); | |
2116 | ||
2117 | /* This is covered by the log_notice "Wrong file type..." It is logged earlier because it gives | |
2118 | * context to other error messages that might follow. */ | |
2119 | return -ENOENT; | |
2120 | } | |
2121 | ||
2122 | /* If child_mode is non-zero, rm_if_wrong_type_safe will be executed for the last path component. */ | |
2123 | static int mkdir_parents_rm_if_wrong_type(mode_t child_mode, const char *path) { | |
21e43a7c | 2124 | _cleanup_close_ int parent_fd = -1; |
c46c3233 | 2125 | struct stat parent_st; |
c46c3233 | 2126 | size_t path_len; |
21e43a7c | 2127 | int r; |
c46c3233 AW |
2128 | |
2129 | assert(path); | |
2130 | assert((child_mode & ~S_IFMT) == 0); | |
2131 | ||
2132 | path_len = strlen(path); | |
2133 | ||
2134 | if (!is_path(path)) | |
2135 | /* rm_if_wrong_type_safe already logs errors. */ | |
2136 | return child_mode != 0 ? rm_if_wrong_type_safe(child_mode, AT_FDCWD, NULL, path, AT_SYMLINK_NOFOLLOW) : 0; | |
2137 | ||
2138 | if (child_mode != 0 && endswith(path, "/")) | |
2139 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2140 | "Trailing path separators are only allowed if child_mode is not set; got \"%s\"", path); | |
2141 | ||
2142 | /* Get the parent_fd and stat. */ | |
c68cafba YW |
2143 | parent_fd = openat(AT_FDCWD, path_is_absolute(path) ? "/" : ".", O_NOCTTY | O_CLOEXEC | O_DIRECTORY); |
2144 | if (parent_fd < 0) | |
2145 | return log_error_errno(errno, "Failed to open root: %m"); | |
2146 | ||
c46c3233 AW |
2147 | if (fstat(parent_fd, &parent_st) < 0) |
2148 | return log_error_errno(errno, "Failed to stat root: %m"); | |
2149 | ||
2150 | /* Check every parent directory in the path, except the last component */ | |
21e43a7c YW |
2151 | for (const char *e = path;;) { |
2152 | _cleanup_close_ int next_fd = -1; | |
c46c3233 | 2153 | char t[path_len + 1]; |
21e43a7c | 2154 | const char *s; |
c46c3233 AW |
2155 | |
2156 | /* Find the start of the next path component. */ | |
2157 | s = e + strspn(e, "/"); | |
2158 | /* Find the end of the next path component. */ | |
2159 | e = s + strcspn(s, "/"); | |
2160 | ||
2161 | /* Copy the path component to t so it can be a null terminated string. */ | |
2162 | *((char*) mempcpy(t, s, e - s)) = 0; | |
2163 | ||
2164 | /* Is this the last component? If so, then check the type */ | |
2165 | if (*e == 0) | |
2166 | return child_mode != 0 ? rm_if_wrong_type_safe(child_mode, parent_fd, &parent_st, t, AT_SYMLINK_NOFOLLOW) : 0; | |
c46c3233 | 2167 | |
21e43a7c YW |
2168 | r = rm_if_wrong_type_safe(S_IFDIR, parent_fd, &parent_st, t, 0); |
2169 | /* Remove dangling symlinks. */ | |
2170 | if (r == -ENOENT) | |
2171 | r = rm_if_wrong_type_safe(S_IFDIR, parent_fd, &parent_st, t, AT_SYMLINK_NOFOLLOW); | |
c46c3233 AW |
2172 | if (r == -ENOENT) { |
2173 | RUN_WITH_UMASK(0000) | |
2174 | r = mkdirat_label(parent_fd, t, 0755); | |
2175 | if (r < 0) { | |
21e43a7c YW |
2176 | _cleanup_free_ char *parent_name = NULL; |
2177 | ||
c46c3233 | 2178 | (void) fd_get_path(parent_fd, &parent_name); |
21e43a7c | 2179 | return log_error_errno(r, "Failed to mkdir \"%s\" at \"%s\": %m", t, strnull(parent_name)); |
c46c3233 AW |
2180 | } |
2181 | } else if (r < 0) | |
2182 | /* rm_if_wrong_type_safe already logs errors. */ | |
2183 | return r; | |
2184 | ||
2185 | next_fd = openat(parent_fd, t, O_NOCTTY | O_CLOEXEC | O_DIRECTORY); | |
2186 | if (next_fd < 0) { | |
21e43a7c YW |
2187 | _cleanup_free_ char *parent_name = NULL; |
2188 | ||
c46c3233 AW |
2189 | r = -errno; |
2190 | (void) fd_get_path(parent_fd, &parent_name); | |
21e43a7c | 2191 | return log_error_errno(r, "Failed to open \"%s\" at \"%s\": %m", t, strnull(parent_name)); |
c46c3233 AW |
2192 | } |
2193 | if (fstat(next_fd, &parent_st) < 0) { | |
21e43a7c YW |
2194 | _cleanup_free_ char *parent_name = NULL; |
2195 | ||
c46c3233 AW |
2196 | r = -errno; |
2197 | (void) fd_get_path(parent_fd, &parent_name); | |
21e43a7c | 2198 | return log_error_errno(r, "Failed to stat \"%s\" at \"%s\": %m", t, strnull(parent_name)); |
c46c3233 AW |
2199 | } |
2200 | ||
21e43a7c | 2201 | CLOSE_AND_REPLACE(parent_fd, next_fd); |
c46c3233 AW |
2202 | } |
2203 | } | |
2204 | ||
2205 | static int mkdir_parents_item(Item *i, mode_t child_mode) { | |
2206 | int r; | |
2207 | if (i->try_replace) { | |
2208 | r = mkdir_parents_rm_if_wrong_type(child_mode, i->path); | |
2209 | if (r < 0 && r != -ENOENT) | |
2210 | return r; | |
2211 | } else | |
2212 | RUN_WITH_UMASK(0000) | |
2213 | (void) mkdir_parents_label(i->path, 0755); | |
2214 | ||
2215 | return 0; | |
2216 | } | |
2217 | ||
3b63d2d3 | 2218 | static int create_item(Item *i) { |
294929f8 | 2219 | CreationMode creation; |
a2fc2f8d | 2220 | int r = 0; |
5008d581 | 2221 | |
3b63d2d3 | 2222 | assert(i); |
5008d581 | 2223 | |
582deb84 ZJS |
2224 | log_debug("Running create action for entry %c %s", (char) i->type, i->path); |
2225 | ||
3b63d2d3 LP |
2226 | switch (i->type) { |
2227 | ||
2228 | case IGNORE_PATH: | |
78a92a5a | 2229 | case IGNORE_DIRECTORY_PATH: |
3b63d2d3 LP |
2230 | case REMOVE_PATH: |
2231 | case RECURSIVE_REMOVE_PATH: | |
2232 | return 0; | |
5008d581 | 2233 | |
eccebf4b | 2234 | case TRUNCATE_FILE: |
3b63d2d3 | 2235 | case CREATE_FILE: |
c46c3233 AW |
2236 | r = mkdir_parents_item(i, S_IFREG); |
2237 | if (r < 0) | |
2238 | return r; | |
7fa10748 | 2239 | |
eccebf4b ZS |
2240 | if ((i->type == CREATE_FILE && i->append_or_force) || i->type == TRUNCATE_FILE) |
2241 | r = truncate_file(i, i->path); | |
2242 | else | |
2243 | r = create_file(i, i->path); | |
5ec9d065 | 2244 | |
5ec9d065 FB |
2245 | if (r < 0) |
2246 | return r; | |
2247 | break; | |
2248 | ||
7b887f22 | 2249 | case COPY_FILES: |
c46c3233 AW |
2250 | r = mkdir_parents_item(i, 0); |
2251 | if (r < 0) | |
2252 | return r; | |
7fa10748 | 2253 | |
b1f7b17f | 2254 | r = copy_files(i); |
849958d1 LP |
2255 | if (r < 0) |
2256 | return r; | |
849958d1 LP |
2257 | break; |
2258 | ||
d4e9eb91 | 2259 | case WRITE_FILE: |
936f6bdb | 2260 | r = glob_item(i, write_one_file); |
f05bc3f7 MS |
2261 | if (r < 0) |
2262 | return r; | |
5008d581 | 2263 | |
3b63d2d3 LP |
2264 | break; |
2265 | ||
3b63d2d3 | 2266 | case CREATE_DIRECTORY: |
d7b8eec7 | 2267 | case TRUNCATE_DIRECTORY: |
c46c3233 AW |
2268 | r = mkdir_parents_item(i, S_IFDIR); |
2269 | if (r < 0) | |
2270 | return r; | |
4c39d899 FB |
2271 | |
2272 | r = create_directory(i, i->path); | |
2273 | if (r < 0) | |
2274 | return r; | |
2275 | break; | |
2276 | ||
d7b8eec7 | 2277 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
2278 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
2279 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
c46c3233 AW |
2280 | r = mkdir_parents_item(i, S_IFDIR); |
2281 | if (r < 0) | |
2282 | return r; | |
d7b8eec7 | 2283 | |
4c39d899 | 2284 | r = create_subvolume(i, i->path); |
4ad36844 FB |
2285 | if (r < 0) |
2286 | return r; | |
2287 | break; | |
5fb13eb5 | 2288 | |
df8dee85 | 2289 | case EMPTY_DIRECTORY: |
54946021 | 2290 | r = glob_item(i, empty_directory); |
f05bc3f7 MS |
2291 | if (r < 0) |
2292 | return r; | |
3b63d2d3 | 2293 | break; |
ee17ee7c LP |
2294 | |
2295 | case CREATE_FIFO: | |
c46c3233 AW |
2296 | r = mkdir_parents_item(i, S_IFIFO); |
2297 | if (r < 0) | |
2298 | return r; | |
7fa10748 | 2299 | |
a2fc2f8d | 2300 | r = create_fifo(i, i->path); |
f05bc3f7 MS |
2301 | if (r < 0) |
2302 | return r; | |
ee17ee7c | 2303 | break; |
a8d88783 | 2304 | |
5c5ccf12 | 2305 | case CREATE_SYMLINK: { |
c46c3233 AW |
2306 | r = mkdir_parents_item(i, S_IFLNK); |
2307 | if (r < 0) | |
2308 | return r; | |
7fa10748 | 2309 | |
ecabcf8b | 2310 | mac_selinux_create_file_prepare(i->path, S_IFLNK); |
4cef1923 | 2311 | r = symlink(i->argument, i->path); |
ecabcf8b | 2312 | mac_selinux_create_file_clear(); |
e9a5ef7c | 2313 | |
468d726b | 2314 | if (r < 0) { |
2e78fa79 | 2315 | _cleanup_free_ char *x = NULL; |
468d726b | 2316 | |
4a62c710 | 2317 | if (errno != EEXIST) |
4cef1923 | 2318 | return log_error_errno(errno, "symlink(%s, %s) failed: %m", i->argument, i->path); |
2e78fa79 LP |
2319 | |
2320 | r = readlink_malloc(i->path, &x); | |
4cef1923 | 2321 | if (r < 0 || !streq(i->argument, x)) { |
2e78fa79 | 2322 | |
c55ac248 | 2323 | if (i->append_or_force) { |
ecabcf8b | 2324 | mac_selinux_create_file_prepare(i->path, S_IFLNK); |
4cef1923 | 2325 | r = symlink_atomic(i->argument, i->path); |
ecabcf8b | 2326 | mac_selinux_create_file_clear(); |
2e78fa79 | 2327 | |
2ef5de1b | 2328 | if (IN_SET(r, -EISDIR, -EEXIST, -ENOTEMPTY)) { |
b3f5897f WD |
2329 | r = rm_rf(i->path, REMOVE_ROOT|REMOVE_PHYSICAL); |
2330 | if (r < 0) | |
2331 | return log_error_errno(r, "rm -fr %s failed: %m", i->path); | |
2332 | ||
2333 | mac_selinux_create_file_prepare(i->path, S_IFLNK); | |
4cef1923 | 2334 | r = symlink(i->argument, i->path) < 0 ? -errno : 0; |
b3f5897f WD |
2335 | mac_selinux_create_file_clear(); |
2336 | } | |
f647962d | 2337 | if (r < 0) |
4cef1923 | 2338 | return log_error_errno(r, "symlink(%s, %s) failed: %m", i->argument, i->path); |
a542c4dc | 2339 | |
294929f8 | 2340 | creation = CREATION_FORCE; |
1554afae | 2341 | } else { |
582deb84 | 2342 | log_debug("\"%s\" is not a symlink or does not point to the correct path.", i->path); |
1554afae LP |
2343 | return 0; |
2344 | } | |
294929f8 ZJS |
2345 | } else |
2346 | creation = CREATION_EXISTING; | |
2347 | } else | |
a542c4dc | 2348 | |
294929f8 | 2349 | creation = CREATION_NORMAL; |
7a7d5db7 | 2350 | log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation), i->path); |
468d726b | 2351 | break; |
5c5ccf12 | 2352 | } |
468d726b LP |
2353 | |
2354 | case CREATE_BLOCK_DEVICE: | |
074bd73f | 2355 | case CREATE_CHAR_DEVICE: |
cb7ed9df | 2356 | if (have_effective_cap(CAP_MKNOD) == 0) { |
713998cf LP |
2357 | /* In a container we lack CAP_MKNOD. We shouldn't attempt to create the device node in that |
2358 | * case to avoid noise, and we don't support virtualized devices in containers anyway. */ | |
cb7ed9df LP |
2359 | |
2360 | log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path); | |
2361 | return 0; | |
2362 | } | |
2363 | ||
c46c3233 AW |
2364 | r = mkdir_parents_item(i, i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR); |
2365 | if (r < 0) | |
2366 | return r; | |
7fa10748 | 2367 | |
074bd73f | 2368 | r = create_device(i, i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR); |
468d726b LP |
2369 | if (r < 0) |
2370 | return r; | |
2371 | ||
2372 | break; | |
468d726b | 2373 | |
e73a03e0 | 2374 | case ADJUST_MODE: |
777b87e7 | 2375 | case RELABEL_PATH: |
936f6bdb | 2376 | r = glob_item(i, path_set_perms); |
777b87e7 | 2377 | if (r < 0) |
96ca8194 | 2378 | return r; |
777b87e7 MS |
2379 | break; |
2380 | ||
a8d88783 | 2381 | case RECURSIVE_RELABEL_PATH: |
936f6bdb | 2382 | r = glob_item_recursively(i, fd_set_perms); |
a8d88783 MS |
2383 | if (r < 0) |
2384 | return r; | |
ebf4e801 | 2385 | break; |
e73a03e0 | 2386 | |
ebf4e801 | 2387 | case SET_XATTR: |
936f6bdb | 2388 | r = glob_item(i, path_set_xattrs); |
b705ab6a ZJS |
2389 | if (r < 0) |
2390 | return r; | |
2391 | break; | |
2392 | ||
2393 | case RECURSIVE_SET_XATTR: | |
936f6bdb | 2394 | r = glob_item_recursively(i, fd_set_xattrs); |
ebf4e801 MW |
2395 | if (r < 0) |
2396 | return r; | |
e73a03e0 | 2397 | break; |
f8eeeaf9 ZJS |
2398 | |
2399 | case SET_ACL: | |
936f6bdb | 2400 | r = glob_item(i, path_set_acls); |
f8eeeaf9 ZJS |
2401 | if (r < 0) |
2402 | return r; | |
b705ab6a ZJS |
2403 | break; |
2404 | ||
2405 | case RECURSIVE_SET_ACL: | |
936f6bdb | 2406 | r = glob_item_recursively(i, fd_set_acls); |
b705ab6a ZJS |
2407 | if (r < 0) |
2408 | return r; | |
2409 | break; | |
22c3a6ca | 2410 | |
88ec4dfa | 2411 | case SET_ATTRIBUTE: |
936f6bdb | 2412 | r = glob_item(i, path_set_attribute); |
22c3a6ca GB |
2413 | if (r < 0) |
2414 | return r; | |
2415 | break; | |
2416 | ||
88ec4dfa | 2417 | case RECURSIVE_SET_ATTRIBUTE: |
936f6bdb | 2418 | r = glob_item_recursively(i, fd_set_attribute); |
22c3a6ca GB |
2419 | if (r < 0) |
2420 | return r; | |
2421 | break; | |
3b63d2d3 LP |
2422 | } |
2423 | ||
f05bc3f7 | 2424 | return 0; |
3b63d2d3 LP |
2425 | } |
2426 | ||
a0896123 | 2427 | static int remove_item_instance(Item *i, const char *instance) { |
3b63d2d3 LP |
2428 | int r; |
2429 | ||
2430 | assert(i); | |
2431 | ||
2432 | switch (i->type) { | |
2433 | ||
3b63d2d3 | 2434 | case REMOVE_PATH: |
4a62c710 | 2435 | if (remove(instance) < 0 && errno != ENOENT) |
3f93da98 | 2436 | return log_error_errno(errno, "rm(%s): %m", instance); |
3b63d2d3 LP |
2437 | |
2438 | break; | |
2439 | ||
3b63d2d3 | 2440 | case RECURSIVE_REMOVE_PATH: |
2c575977 | 2441 | /* FIXME: we probably should use dir_cleanup() here instead of rm_rf() so that 'x' is honoured. */ |
582deb84 | 2442 | log_debug("rm -rf \"%s\"", instance); |
2c575977 | 2443 | r = rm_rf(instance, REMOVE_ROOT|REMOVE_SUBVOLUME|REMOVE_PHYSICAL); |
f647962d MS |
2444 | if (r < 0 && r != -ENOENT) |
2445 | return log_error_errno(r, "rm_rf(%s): %m", instance); | |
3b63d2d3 LP |
2446 | |
2447 | break; | |
7fcb4b9b ZJS |
2448 | |
2449 | default: | |
04499a70 | 2450 | assert_not_reached(); |
3b63d2d3 LP |
2451 | } |
2452 | ||
2453 | return 0; | |
2454 | } | |
2455 | ||
a0896123 | 2456 | static int remove_item(Item *i) { |
2c575977 LP |
2457 | int r; |
2458 | ||
b8bb3e8f LP |
2459 | assert(i); |
2460 | ||
582deb84 ZJS |
2461 | log_debug("Running remove action for entry %c %s", (char) i->type, i->path); |
2462 | ||
b8bb3e8f LP |
2463 | switch (i->type) { |
2464 | ||
b8bb3e8f | 2465 | case TRUNCATE_DIRECTORY: |
2c575977 LP |
2466 | /* FIXME: we probably should use dir_cleanup() here instead of rm_rf() so that 'x' is honoured. */ |
2467 | log_debug("rm -rf \"%s\"", i->path); | |
2468 | r = rm_rf(i->path, REMOVE_PHYSICAL); | |
2469 | if (r < 0 && r != -ENOENT) | |
2470 | return log_error_errno(r, "rm_rf(%s): %m", i->path); | |
2471 | ||
2472 | return 0; | |
2473 | ||
2474 | case REMOVE_PATH: | |
99e68c0b | 2475 | case RECURSIVE_REMOVE_PATH: |
936f6bdb | 2476 | return glob_item(i, remove_item_instance); |
b8bb3e8f | 2477 | |
df8dee85 ZJS |
2478 | default: |
2479 | return 0; | |
2480 | } | |
b8bb3e8f LP |
2481 | } |
2482 | ||
7f7a50dd SK |
2483 | static char *age_by_to_string(AgeBy ab, bool is_dir) { |
2484 | static const char ab_map[] = { 'a', 'b', 'c', 'm' }; | |
2485 | size_t j = 0; | |
2486 | char *ret; | |
2487 | ||
2488 | ret = new(char, ELEMENTSOF(ab_map) + 1); | |
2489 | if (!ret) | |
2490 | return NULL; | |
2491 | ||
2492 | for (size_t i = 0; i < ELEMENTSOF(ab_map); i++) | |
2493 | if (FLAGS_SET(ab, 1U << i)) | |
2494 | ret[j++] = is_dir ? ascii_toupper(ab_map[i]) : ab_map[i]; | |
2495 | ||
2496 | ret[j] = 0; | |
2497 | return ret; | |
2498 | } | |
2499 | ||
78a92a5a | 2500 | static int clean_item_instance(Item *i, const char* instance) { |
7fd1b19b | 2501 | _cleanup_closedir_ DIR *d = NULL; |
7cd296c2 | 2502 | STRUCT_STATX_DEFINE(sx); |
ca194a2a | 2503 | int mountpoint, r; |
78a92a5a | 2504 | usec_t cutoff, n; |
ddb439b8 | 2505 | |
78a92a5a MS |
2506 | assert(i); |
2507 | ||
2508 | if (!i->age_set) | |
2509 | return 0; | |
2510 | ||
2511 | n = now(CLOCK_REALTIME); | |
2512 | if (n < i->age) | |
2513 | return 0; | |
2514 | ||
2515 | cutoff = n - i->age; | |
2516 | ||
df99a9ef | 2517 | d = opendir_nomod(instance); |
78a92a5a | 2518 | if (!d) { |
d710aaf7 | 2519 | if (IN_SET(errno, ENOENT, ENOTDIR)) { |
582deb84 | 2520 | log_debug_errno(errno, "Directory \"%s\": %m", instance); |
78a92a5a | 2521 | return 0; |
582deb84 | 2522 | } |
78a92a5a | 2523 | |
d710aaf7 | 2524 | return log_error_errno(errno, "Failed to open directory %s: %m", instance); |
78a92a5a MS |
2525 | } |
2526 | ||
ca194a2a LP |
2527 | r = statx_fallback(dirfd(d), "", AT_EMPTY_PATH, STATX_MODE|STATX_INO|STATX_ATIME|STATX_MTIME, &sx); |
2528 | if (r < 0) | |
2529 | return log_error_errno(r, "statx(%s) failed: %m", instance); | |
ddb439b8 | 2530 | |
ca194a2a LP |
2531 | if (FLAGS_SET(sx.stx_attributes_mask, STATX_ATTR_MOUNT_ROOT)) |
2532 | mountpoint = FLAGS_SET(sx.stx_attributes, STATX_ATTR_MOUNT_ROOT); | |
2533 | else { | |
ddb439b8 | 2534 | struct stat ps; |
78a92a5a | 2535 | |
ddb439b8 LP |
2536 | if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) |
2537 | return log_error_errno(errno, "stat(%s/..) failed: %m", i->path); | |
78a92a5a | 2538 | |
ddb439b8 | 2539 | mountpoint = |
ca194a2a LP |
2540 | sx.stx_dev_major != major(ps.st_dev) || |
2541 | sx.stx_dev_minor != minor(ps.st_dev) || | |
2542 | sx.stx_ino != ps.st_ino; | |
ddb439b8 | 2543 | } |
78a92a5a | 2544 | |
7f7a50dd SK |
2545 | if (DEBUG_LOGGING) { |
2546 | _cleanup_free_ char *ab_f = NULL, *ab_d = NULL; | |
2547 | ||
2548 | ab_f = age_by_to_string(i->age_by_file, false); | |
2549 | if (!ab_f) | |
2550 | return log_oom(); | |
2551 | ||
2552 | ab_d = age_by_to_string(i->age_by_dir, true); | |
2553 | if (!ab_d) | |
2554 | return log_oom(); | |
2555 | ||
2556 | log_debug("Cleanup threshold for %s \"%s\" is %s; age-by: %s%s", | |
2557 | mountpoint ? "mount point" : "directory", | |
2558 | instance, | |
0086ef19 | 2559 | FORMAT_TIMESTAMP_STYLE(cutoff, TIMESTAMP_US), |
7f7a50dd SK |
2560 | ab_f, ab_d); |
2561 | } | |
582deb84 | 2562 | |
ddb439b8 | 2563 | return dir_cleanup(i, instance, d, |
ca194a2a LP |
2564 | load_statx_timestamp_nsec(&sx.stx_atime), |
2565 | load_statx_timestamp_nsec(&sx.stx_mtime), | |
2566 | cutoff * NSEC_PER_USEC, | |
2567 | sx.stx_dev_major, sx.stx_dev_minor, mountpoint, | |
7f7a50dd SK |
2568 | MAX_DEPTH, i->keep_first_level, |
2569 | i->age_by_file, i->age_by_dir); | |
78a92a5a MS |
2570 | } |
2571 | ||
2572 | static int clean_item(Item *i) { | |
78a92a5a MS |
2573 | assert(i); |
2574 | ||
582deb84 ZJS |
2575 | log_debug("Running clean action for entry %c %s", (char) i->type, i->path); |
2576 | ||
78a92a5a MS |
2577 | switch (i->type) { |
2578 | case CREATE_DIRECTORY: | |
d7b8eec7 | 2579 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
2580 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
2581 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
78a92a5a MS |
2582 | case TRUNCATE_DIRECTORY: |
2583 | case IGNORE_PATH: | |
849958d1 | 2584 | case COPY_FILES: |
78a92a5a | 2585 | clean_item_instance(i, i->path); |
df8dee85 | 2586 | return 0; |
65241c14 | 2587 | case EMPTY_DIRECTORY: |
78a92a5a | 2588 | case IGNORE_DIRECTORY_PATH: |
936f6bdb | 2589 | return glob_item(i, clean_item_instance); |
78a92a5a | 2590 | default: |
df8dee85 | 2591 | return 0; |
78a92a5a | 2592 | } |
78a92a5a MS |
2593 | } |
2594 | ||
599ebe29 | 2595 | static int process_item(Item *i, OperationMask operation) { |
811a1587 | 2596 | OperationMask todo; |
bd6d28f2 ZJS |
2597 | _cleanup_free_ char *_path = NULL; |
2598 | const char *path; | |
811a1587 | 2599 | int r, q, p; |
3b63d2d3 LP |
2600 | |
2601 | assert(i); | |
2602 | ||
811a1587 LP |
2603 | todo = operation & ~i->done; |
2604 | if (todo == 0) /* Everything already done? */ | |
1910cd0e LP |
2605 | return 0; |
2606 | ||
811a1587 | 2607 | i->done |= operation; |
1910cd0e | 2608 | |
bd6d28f2 ZJS |
2609 | path = i->path; |
2610 | if (string_is_glob(path)) { | |
2611 | /* We can't easily check whether a glob matches any autofs path, so let's do the check only | |
2612 | * for the non-glob part. */ | |
2613 | ||
2614 | r = glob_non_glob_prefix(path, &_path); | |
2615 | if (r < 0 && r != -ENOENT) | |
2616 | return log_debug_errno(r, "Failed to deglob path: %m"); | |
2617 | if (r >= 0) | |
2618 | path = _path; | |
2619 | } | |
2620 | ||
2621 | r = chase_symlinks(path, arg_root, CHASE_NO_AUTOFS|CHASE_NONEXISTENT|CHASE_WARN, NULL, NULL); | |
21af3386 | 2622 | if (r == -EREMOTE) { |
bd6d28f2 | 2623 | log_notice_errno(r, "Skipping %s", i->path); /* We log the configured path, to not confuse the user. */ |
811a1587 | 2624 | return 0; |
145b8d0f FB |
2625 | } |
2626 | if (r < 0) | |
48d96904 | 2627 | log_debug_errno(r, "Failed to determine whether '%s' is below autofs, ignoring: %m", i->path); |
655f2da0 | 2628 | |
599ebe29 | 2629 | r = FLAGS_SET(operation, OPERATION_CREATE) ? create_item(i) : 0; |
6d7b5433 WD |
2630 | /* Failure can only be tolerated for create */ |
2631 | if (i->allow_failure) | |
2632 | r = 0; | |
3b63d2d3 | 2633 | |
599ebe29 LP |
2634 | q = FLAGS_SET(operation, OPERATION_REMOVE) ? remove_item(i) : 0; |
2635 | p = FLAGS_SET(operation, OPERATION_CLEAN) ? clean_item(i) : 0; | |
1a967b6b | 2636 | |
811a1587 | 2637 | return r < 0 ? r : |
1db50423 ZJS |
2638 | q < 0 ? q : |
2639 | p; | |
3b63d2d3 LP |
2640 | } |
2641 | ||
599ebe29 | 2642 | static int process_item_array(ItemArray *array, OperationMask operation) { |
96d10d78 LP |
2643 | int r = 0; |
2644 | size_t n; | |
753615e8 | 2645 | |
3f93da98 ZJS |
2646 | assert(array); |
2647 | ||
811a1587 LP |
2648 | /* Create any parent first. */ |
2649 | if (FLAGS_SET(operation, OPERATION_CREATE) && array->parent) | |
2650 | r = process_item_array(array->parent, operation & OPERATION_CREATE); | |
2651 | ||
2652 | /* Clean up all children first */ | |
2653 | if ((operation & (OPERATION_REMOVE|OPERATION_CLEAN)) && !set_isempty(array->children)) { | |
811a1587 LP |
2654 | ItemArray *c; |
2655 | ||
90e74a66 | 2656 | SET_FOREACH(c, array->children) { |
811a1587 LP |
2657 | int k; |
2658 | ||
2659 | k = process_item_array(c, operation & (OPERATION_REMOVE|OPERATION_CLEAN)); | |
2660 | if (k < 0 && r == 0) | |
2661 | r = k; | |
2662 | } | |
2663 | } | |
2664 | ||
96d10d78 LP |
2665 | for (n = 0; n < array->n_items; n++) { |
2666 | int k; | |
2667 | ||
599ebe29 | 2668 | k = process_item(array->items + n, operation); |
3f93da98 ZJS |
2669 | if (k < 0 && r == 0) |
2670 | r = k; | |
2671 | } | |
2672 | ||
2673 | return r; | |
2674 | } | |
3b63d2d3 | 2675 | |
3f93da98 ZJS |
2676 | static void item_free_contents(Item *i) { |
2677 | assert(i); | |
3b63d2d3 | 2678 | free(i->path); |
468d726b | 2679 | free(i->argument); |
ebf4e801 | 2680 | strv_free(i->xattrs); |
f8eeeaf9 | 2681 | |
349cc4a5 | 2682 | #if HAVE_ACL |
f8eeeaf9 ZJS |
2683 | acl_free(i->acl_access); |
2684 | acl_free(i->acl_default); | |
2685 | #endif | |
3b63d2d3 LP |
2686 | } |
2687 | ||
87938c3b | 2688 | static ItemArray* item_array_free(ItemArray *a) { |
96d10d78 | 2689 | size_t n; |
3f93da98 ZJS |
2690 | |
2691 | if (!a) | |
87938c3b | 2692 | return NULL; |
3f93da98 | 2693 | |
96d10d78 | 2694 | for (n = 0; n < a->n_items; n++) |
3f93da98 | 2695 | item_free_contents(a->items + n); |
96d10d78 | 2696 | |
811a1587 | 2697 | set_free(a->children); |
3f93da98 | 2698 | free(a->items); |
87938c3b | 2699 | return mfree(a); |
3f93da98 | 2700 | } |
e2f2fb78 | 2701 | |
93bab288 | 2702 | static int item_compare(const Item *a, const Item *b) { |
17493fa5 LP |
2703 | /* Make sure that the ownership taking item is put first, so |
2704 | * that we first create the node, and then can adjust it */ | |
2705 | ||
93bab288 | 2706 | if (takes_ownership(a->type) && !takes_ownership(b->type)) |
17493fa5 | 2707 | return -1; |
93bab288 | 2708 | if (!takes_ownership(a->type) && takes_ownership(b->type)) |
17493fa5 LP |
2709 | return 1; |
2710 | ||
93bab288 | 2711 | return CMP(a->type, b->type); |
17493fa5 LP |
2712 | } |
2713 | ||
3f93da98 | 2714 | static bool item_compatible(Item *a, Item *b) { |
bfe95f35 LP |
2715 | assert(a); |
2716 | assert(b); | |
3f93da98 | 2717 | assert(streq(a->path, b->path)); |
bfe95f35 | 2718 | |
3f93da98 ZJS |
2719 | if (takes_ownership(a->type) && takes_ownership(b->type)) |
2720 | /* check if the items are the same */ | |
2721 | return streq_ptr(a->argument, b->argument) && | |
bfe95f35 | 2722 | |
3f93da98 ZJS |
2723 | a->uid_set == b->uid_set && |
2724 | a->uid == b->uid && | |
bfe95f35 | 2725 | |
3f93da98 ZJS |
2726 | a->gid_set == b->gid_set && |
2727 | a->gid == b->gid && | |
bfe95f35 | 2728 | |
3f93da98 ZJS |
2729 | a->mode_set == b->mode_set && |
2730 | a->mode == b->mode && | |
bfe95f35 | 2731 | |
3f93da98 ZJS |
2732 | a->age_set == b->age_set && |
2733 | a->age == b->age && | |
bfe95f35 | 2734 | |
7f7a50dd SK |
2735 | a->age_by_file == b->age_by_file && |
2736 | a->age_by_dir == b->age_by_dir && | |
2737 | ||
3f93da98 | 2738 | a->mask_perms == b->mask_perms && |
bfe95f35 | 2739 | |
3f93da98 | 2740 | a->keep_first_level == b->keep_first_level && |
468d726b | 2741 | |
3f93da98 | 2742 | a->major_minor == b->major_minor; |
468d726b | 2743 | |
bfe95f35 LP |
2744 | return true; |
2745 | } | |
2746 | ||
a2aced4a DR |
2747 | static bool should_include_path(const char *path) { |
2748 | char **prefix; | |
2749 | ||
abef3f91 | 2750 | STRV_FOREACH(prefix, arg_exclude_prefixes) |
582deb84 ZJS |
2751 | if (path_startswith(path, *prefix)) { |
2752 | log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.", | |
2753 | path, *prefix); | |
5c795114 | 2754 | return false; |
582deb84 | 2755 | } |
a2aced4a | 2756 | |
abef3f91 | 2757 | STRV_FOREACH(prefix, arg_include_prefixes) |
582deb84 ZJS |
2758 | if (path_startswith(path, *prefix)) { |
2759 | log_debug("Entry \"%s\" matches include prefix \"%s\".", path, *prefix); | |
a2aced4a | 2760 | return true; |
582deb84 | 2761 | } |
a2aced4a | 2762 | |
6b000af4 | 2763 | /* no matches, so we should include this path only if we have no allow list at all */ |
7b943bb7 | 2764 | if (strv_isempty(arg_include_prefixes)) |
582deb84 ZJS |
2765 | return true; |
2766 | ||
2767 | log_debug("Entry \"%s\" does not match any include prefix, skipping.", path); | |
2768 | return false; | |
a2aced4a DR |
2769 | } |
2770 | ||
4cef1923 | 2771 | static int specifier_expansion_from_arg(Item *i) { |
4cef1923 FB |
2772 | int r; |
2773 | ||
2774 | assert(i); | |
2775 | ||
4e361acc | 2776 | if (!i->argument) |
4cef1923 FB |
2777 | return 0; |
2778 | ||
2779 | switch (i->type) { | |
2780 | case COPY_FILES: | |
2781 | case CREATE_SYMLINK: | |
2782 | case CREATE_FILE: | |
2783 | case TRUNCATE_FILE: | |
e437538f ZJS |
2784 | case WRITE_FILE: { |
2785 | _cleanup_free_ char *unescaped = NULL, *resolved = NULL; | |
2786 | ssize_t l; | |
2787 | ||
2788 | l = cunescape(i->argument, 0, &unescaped); | |
2789 | if (l < 0) | |
2790 | return log_error_errno(l, "Failed to unescape parameter to write: %s", i->argument); | |
4cef1923 | 2791 | |
de61a04b | 2792 | r = specifier_printf(unescaped, PATH_MAX-1, specifier_table, arg_root, NULL, &resolved); |
4cef1923 FB |
2793 | if (r < 0) |
2794 | return r; | |
2795 | ||
e437538f ZJS |
2796 | return free_and_replace(i->argument, resolved); |
2797 | } | |
4cef1923 | 2798 | case SET_XATTR: |
e437538f ZJS |
2799 | case RECURSIVE_SET_XATTR: { |
2800 | char **xattr; | |
dfe01841 | 2801 | STRV_FOREACH(xattr, i->xattrs) { |
e437538f ZJS |
2802 | _cleanup_free_ char *resolved = NULL; |
2803 | ||
de61a04b | 2804 | r = specifier_printf(*xattr, SIZE_MAX, specifier_table, arg_root, NULL, &resolved); |
4cef1923 FB |
2805 | if (r < 0) |
2806 | return r; | |
2807 | ||
2808 | free_and_replace(*xattr, resolved); | |
2809 | } | |
e437538f ZJS |
2810 | return 0; |
2811 | } | |
4cef1923 | 2812 | default: |
e437538f | 2813 | return 0; |
4cef1923 | 2814 | } |
4cef1923 FB |
2815 | } |
2816 | ||
a2d1fb88 LP |
2817 | static int patch_var_run(const char *fname, unsigned line, char **path) { |
2818 | const char *k; | |
2819 | char *n; | |
2820 | ||
2821 | assert(path); | |
2822 | assert(*path); | |
2823 | ||
2824 | /* Optionally rewrites lines referencing /var/run/, to use /run/ instead. Why bother? tmpfiles merges lines in | |
2825 | * some cases and detects conflicts in others. If files/directories are specified through two equivalent lines | |
2826 | * this is problematic as neither case will be detected. Ideally we'd detect these cases by resolving symlinks | |
2827 | * early, but that's precisely not what we can do here as this code very likely is running very early on, at a | |
2828 | * time where the paths in question are not available yet, or even more importantly, our own tmpfiles rules | |
2829 | * might create the paths that are intermediary to the listed paths. We can't really cover the generic case, | |
2830 | * but the least we can do is cover the specific case of /var/run vs. /run, as /var/run is a legacy name for | |
2831 | * /run only, and we explicitly document that and require that on systemd systems the former is a symlink to | |
2832 | * the latter. Moreover files below this path are by far the primary usecase for tmpfiles.d/. */ | |
2833 | ||
2834 | k = path_startswith(*path, "/var/run/"); | |
2835 | if (isempty(k)) /* Don't complain about other paths than /var/run, and not about /var/run itself either. */ | |
2836 | return 0; | |
2837 | ||
2d9b74ba | 2838 | n = path_join("/run", k); |
a2d1fb88 LP |
2839 | if (!n) |
2840 | return log_oom(); | |
2841 | ||
2842 | /* Also log about this briefly. We do so at LOG_NOTICE level, as we fixed up the situation automatically, hence | |
2843 | * there's no immediate need for action by the user. However, in the interest of making things less confusing | |
2844 | * to the user, let's still inform the user that these snippets should really be updated. */ | |
b88ba6c7 ZJS |
2845 | log_syntax(NULL, LOG_NOTICE, fname, line, 0, |
2846 | "Line references path below legacy directory /var/run/, updating %s → %s; please update the tmpfiles.d/ drop-in file accordingly.", | |
2847 | *path, n); | |
a2d1fb88 | 2848 | |
81fa4479 | 2849 | free_and_replace(*path, n); |
a2d1fb88 LP |
2850 | |
2851 | return 0; | |
2852 | } | |
2853 | ||
a3451c2c LP |
2854 | static int find_uid(const char *user, uid_t *ret_uid, Hashmap **cache) { |
2855 | int r; | |
2856 | ||
2857 | assert(user); | |
2858 | assert(ret_uid); | |
2859 | ||
2860 | /* First: parse as numeric UID string */ | |
2861 | r = parse_uid(user, ret_uid); | |
2862 | if (r >= 0) | |
2863 | return r; | |
2864 | ||
2865 | /* Second: pass to NSS if we are running "online" */ | |
2866 | if (!arg_root) | |
2867 | return get_user_creds(&user, ret_uid, NULL, NULL, NULL, 0); | |
2868 | ||
2869 | /* Third, synthesize "root" unconditionally */ | |
2870 | if (streq(user, "root")) { | |
2871 | *ret_uid = 0; | |
2872 | return 0; | |
2873 | } | |
2874 | ||
2875 | /* Fourth: use fgetpwent() to read /etc/passwd directly, if we are "offline" */ | |
2876 | return name_to_uid_offline(arg_root, user, ret_uid, cache); | |
2877 | } | |
2878 | ||
2879 | static int find_gid(const char *group, gid_t *ret_gid, Hashmap **cache) { | |
2880 | int r; | |
2881 | ||
2882 | assert(group); | |
2883 | assert(ret_gid); | |
2884 | ||
2885 | /* First: parse as numeric GID string */ | |
2886 | r = parse_gid(group, ret_gid); | |
2887 | if (r >= 0) | |
2888 | return r; | |
2889 | ||
2890 | /* Second: pass to NSS if we are running "online" */ | |
2891 | if (!arg_root) | |
2892 | return get_group_creds(&group, ret_gid, 0); | |
2893 | ||
2894 | /* Third, synthesize "root" unconditionally */ | |
2895 | if (streq(group, "root")) { | |
2896 | *ret_gid = 0; | |
2897 | return 0; | |
2898 | } | |
2899 | ||
2900 | /* Fourth: use fgetgrent() to read /etc/group directly, if we are "offline" */ | |
2901 | return name_to_gid_offline(arg_root, group, ret_gid, cache); | |
2902 | } | |
2903 | ||
7f7a50dd SK |
2904 | static int parse_age_by_from_arg(const char *age_by_str, Item *item) { |
2905 | AgeBy ab_f = 0, ab_d = 0; | |
2906 | ||
2907 | static const struct { | |
2908 | char age_by_chr; | |
2909 | AgeBy age_by_flag; | |
2910 | } age_by_types[] = { | |
2911 | { 'a', AGE_BY_ATIME }, | |
2912 | { 'b', AGE_BY_BTIME }, | |
2913 | { 'c', AGE_BY_CTIME }, | |
2914 | { 'm', AGE_BY_MTIME }, | |
2915 | }; | |
2916 | ||
2917 | assert(age_by_str); | |
2918 | assert(item); | |
2919 | ||
2920 | if (isempty(age_by_str)) | |
2921 | return -EINVAL; | |
2922 | ||
2923 | for (const char *s = age_by_str; *s != 0; s++) { | |
2924 | size_t i; | |
2925 | ||
2926 | /* Ignore whitespace. */ | |
2927 | if (strchr(WHITESPACE, *s)) | |
2928 | continue; | |
2929 | ||
2930 | for (i = 0; i < ELEMENTSOF(age_by_types); i++) { | |
2931 | /* Check lower-case for files, upper-case for directories. */ | |
2932 | if (*s == age_by_types[i].age_by_chr) { | |
2933 | ab_f |= age_by_types[i].age_by_flag; | |
2934 | break; | |
2935 | } else if (*s == ascii_toupper(age_by_types[i].age_by_chr)) { | |
2936 | ab_d |= age_by_types[i].age_by_flag; | |
2937 | break; | |
2938 | } | |
2939 | } | |
2940 | ||
2941 | /* Invalid character. */ | |
2942 | if (i >= ELEMENTSOF(age_by_types)) | |
2943 | return -EINVAL; | |
2944 | } | |
2945 | ||
2946 | /* No match. */ | |
2947 | if (ab_f == 0 && ab_d == 0) | |
2948 | return -EINVAL; | |
2949 | ||
2950 | item->age_by_file = ab_f > 0 ? ab_f : AGE_BY_DEFAULT_FILE; | |
2951 | item->age_by_dir = ab_d > 0 ? ab_d : AGE_BY_DEFAULT_DIR; | |
2952 | ||
2953 | return 0; | |
2954 | } | |
2955 | ||
a3451c2c LP |
2956 | static int parse_line( |
2957 | const char *fname, | |
2958 | unsigned line, | |
2959 | const char *buffer, | |
2960 | bool *invalid_config, | |
2961 | Hashmap **uid_cache, | |
2962 | Hashmap **gid_cache) { | |
1731e34a | 2963 | |
cde684a2 | 2964 | _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL; |
7f7a50dd SK |
2965 | _cleanup_(item_free_contents) Item i = { |
2966 | /* The "age-by" argument considers all file timestamp types by default. */ | |
2967 | .age_by_file = AGE_BY_DEFAULT_FILE, | |
2968 | .age_by_dir = AGE_BY_DEFAULT_DIR, | |
2969 | }; | |
3f93da98 | 2970 | ItemArray *existing; |
ef43a391 | 2971 | OrderedHashmap *h; |
657cf7f4 | 2972 | int r, pos; |
c46c3233 | 2973 | bool append_or_force = false, boot = false, allow_failure = false, try_replace = false; |
3b63d2d3 LP |
2974 | |
2975 | assert(fname); | |
2976 | assert(line >= 1); | |
2977 | assert(buffer); | |
2978 | ||
68685607 | 2979 | r = extract_many_words( |
4034a06d | 2980 | &buffer, |
68685607 | 2981 | NULL, |
4ec85141 | 2982 | EXTRACT_UNQUOTE, |
4034a06d LP |
2983 | &action, |
2984 | &path, | |
2985 | &mode, | |
2986 | &user, | |
2987 | &group, | |
2988 | &age, | |
2989 | NULL); | |
d9daae55 | 2990 | if (r < 0) { |
751223fe ZJS |
2991 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
2992 | /* invalid quoting and such or an unknown specifier */ | |
d9daae55 | 2993 | *invalid_config = true; |
d02933fd | 2994 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to parse line: %m"); |
4b93699d | 2995 | } else if (r < 2) { |
d9daae55 | 2996 | *invalid_config = true; |
d02933fd | 2997 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Syntax error."); |
5008d581 LP |
2998 | } |
2999 | ||
e7b88b7b | 3000 | if (!empty_or_dash(buffer)) { |
4034a06d LP |
3001 | i.argument = strdup(buffer); |
3002 | if (!i.argument) | |
3003 | return log_oom(); | |
3004 | } | |
3005 | ||
2e78fa79 | 3006 | if (isempty(action)) { |
d9daae55 | 3007 | *invalid_config = true; |
d02933fd | 3008 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Command too short '%s'.", action); |
2e78fa79 LP |
3009 | } |
3010 | ||
5f255144 ZJS |
3011 | for (pos = 1; action[pos]; pos++) { |
3012 | if (action[pos] == '!' && !boot) | |
3013 | boot = true; | |
c55ac248 ZS |
3014 | else if (action[pos] == '+' && !append_or_force) |
3015 | append_or_force = true; | |
6d7b5433 WD |
3016 | else if (action[pos] == '-' && !allow_failure) |
3017 | allow_failure = true; | |
c46c3233 AW |
3018 | else if (action[pos] == '=' && !try_replace) |
3019 | try_replace = true; | |
5f255144 | 3020 | else { |
d9daae55 | 3021 | *invalid_config = true; |
d02933fd | 3022 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Unknown modifiers in command '%s'", action); |
5f255144 | 3023 | } |
2e78fa79 LP |
3024 | } |
3025 | ||
582deb84 | 3026 | if (boot && !arg_boot) { |
d02933fd | 3027 | log_syntax(NULL, LOG_DEBUG, fname, line, 0, "Ignoring entry %s \"%s\" because --boot is not specified.", action, path); |
c4708f13 | 3028 | return 0; |
582deb84 | 3029 | } |
c4708f13 | 3030 | |
3f93da98 | 3031 | i.type = action[0]; |
c55ac248 | 3032 | i.append_or_force = append_or_force; |
6d7b5433 | 3033 | i.allow_failure = allow_failure; |
c46c3233 | 3034 | i.try_replace = try_replace; |
2e78fa79 | 3035 | |
de61a04b | 3036 | r = specifier_printf(path, PATH_MAX-1, specifier_table, arg_root, NULL, &i.path); |
5a8575ef | 3037 | if (r == -ENXIO) |
4cef1923 | 3038 | return log_unresolvable_specifier(fname, line); |
d9daae55 | 3039 | if (r < 0) { |
751223fe ZJS |
3040 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
3041 | *invalid_config = true; | |
d02933fd | 3042 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to replace specifiers in '%s': %m", path); |
d9daae55 | 3043 | } |
1731e34a | 3044 | |
a2d1fb88 LP |
3045 | r = patch_var_run(fname, line, &i.path); |
3046 | if (r < 0) | |
3047 | return r; | |
3048 | ||
3f93da98 | 3049 | switch (i.type) { |
468d726b | 3050 | |
777b87e7 | 3051 | case CREATE_DIRECTORY: |
d7b8eec7 | 3052 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
3053 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
3054 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
df8dee85 | 3055 | case EMPTY_DIRECTORY: |
777b87e7 MS |
3056 | case TRUNCATE_DIRECTORY: |
3057 | case CREATE_FIFO: | |
3058 | case IGNORE_PATH: | |
78a92a5a | 3059 | case IGNORE_DIRECTORY_PATH: |
777b87e7 MS |
3060 | case REMOVE_PATH: |
3061 | case RECURSIVE_REMOVE_PATH: | |
e73a03e0 | 3062 | case ADJUST_MODE: |
777b87e7 MS |
3063 | case RELABEL_PATH: |
3064 | case RECURSIVE_RELABEL_PATH: | |
c82500c6 | 3065 | if (i.argument) |
d02933fd | 3066 | log_syntax(NULL, LOG_WARNING, fname, line, 0, "%c lines don't take argument fields, ignoring.", i.type); |
c82500c6 LP |
3067 | |
3068 | break; | |
3069 | ||
3070 | case CREATE_FILE: | |
3071 | case TRUNCATE_FILE: | |
777b87e7 | 3072 | break; |
468d726b LP |
3073 | |
3074 | case CREATE_SYMLINK: | |
3f93da98 | 3075 | if (!i.argument) { |
b910cc72 | 3076 | i.argument = path_join("/usr/share/factory", i.path); |
3f93da98 | 3077 | if (!i.argument) |
2f3b873a | 3078 | return log_oom(); |
468d726b LP |
3079 | } |
3080 | break; | |
3081 | ||
31ed59c5 | 3082 | case WRITE_FILE: |
3f93da98 | 3083 | if (!i.argument) { |
d9daae55 | 3084 | *invalid_config = true; |
d02933fd | 3085 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Write file requires argument."); |
31ed59c5 LP |
3086 | } |
3087 | break; | |
3088 | ||
849958d1 | 3089 | case COPY_FILES: |
3f93da98 | 3090 | if (!i.argument) { |
7dc6477d | 3091 | i.argument = path_join("/usr/share/factory", i.path); |
3f93da98 | 3092 | if (!i.argument) |
2f3b873a | 3093 | return log_oom(); |
626f8d16 | 3094 | |
3f93da98 | 3095 | } else if (!path_is_absolute(i.argument)) { |
d9daae55 | 3096 | *invalid_config = true; |
d02933fd | 3097 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Source path '%s' is not absolute.", i.argument); |
626f8d16 | 3098 | |
7dc6477d LP |
3099 | } |
3100 | ||
3101 | if (!empty_or_root(arg_root)) { | |
626f8d16 ZJS |
3102 | char *p; |
3103 | ||
d34cd571 | 3104 | p = path_join(arg_root, i.argument); |
626f8d16 ZJS |
3105 | if (!p) |
3106 | return log_oom(); | |
3107 | free_and_replace(i.argument, p); | |
849958d1 LP |
3108 | } |
3109 | ||
4ff361cc | 3110 | path_simplify(i.argument); |
849958d1 LP |
3111 | break; |
3112 | ||
468d726b | 3113 | case CREATE_CHAR_DEVICE: |
3a47c40d | 3114 | case CREATE_BLOCK_DEVICE: |
3f93da98 | 3115 | if (!i.argument) { |
d9daae55 | 3116 | *invalid_config = true; |
d02933fd | 3117 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Device file requires argument."); |
468d726b LP |
3118 | } |
3119 | ||
3a47c40d LP |
3120 | r = parse_dev(i.argument, &i.major_minor); |
3121 | if (r < 0) { | |
d9daae55 | 3122 | *invalid_config = true; |
d02933fd | 3123 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Can't parse device file major/minor '%s'.", i.argument); |
468d726b LP |
3124 | } |
3125 | ||
468d726b | 3126 | break; |
468d726b | 3127 | |
ebf4e801 | 3128 | case SET_XATTR: |
b705ab6a | 3129 | case RECURSIVE_SET_XATTR: |
3f93da98 | 3130 | if (!i.argument) { |
d9daae55 | 3131 | *invalid_config = true; |
d02933fd LP |
3132 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3133 | "Set extended attribute requires argument."); | |
ebf4e801 | 3134 | } |
bd550f78 | 3135 | r = parse_xattrs_from_arg(&i); |
ebf4e801 MW |
3136 | if (r < 0) |
3137 | return r; | |
3138 | break; | |
3139 | ||
f8eeeaf9 | 3140 | case SET_ACL: |
b705ab6a | 3141 | case RECURSIVE_SET_ACL: |
f8eeeaf9 | 3142 | if (!i.argument) { |
d9daae55 | 3143 | *invalid_config = true; |
d02933fd LP |
3144 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3145 | "Set ACLs requires argument."); | |
f8eeeaf9 | 3146 | } |
bd550f78 | 3147 | r = parse_acls_from_arg(&i); |
f8eeeaf9 ZJS |
3148 | if (r < 0) |
3149 | return r; | |
3150 | break; | |
3151 | ||
88ec4dfa LP |
3152 | case SET_ATTRIBUTE: |
3153 | case RECURSIVE_SET_ATTRIBUTE: | |
22c3a6ca | 3154 | if (!i.argument) { |
d9daae55 | 3155 | *invalid_config = true; |
d02933fd LP |
3156 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3157 | "Set file attribute requires argument."); | |
22c3a6ca | 3158 | } |
bd550f78 | 3159 | r = parse_attribute_from_arg(&i); |
751223fe | 3160 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
d9daae55 | 3161 | *invalid_config = true; |
22c3a6ca GB |
3162 | if (r < 0) |
3163 | return r; | |
3164 | break; | |
3165 | ||
777b87e7 | 3166 | default: |
d9daae55 | 3167 | *invalid_config = true; |
d02933fd LP |
3168 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3169 | "Unknown command type '%c'.", (char) i.type); | |
3b63d2d3 | 3170 | } |
468d726b | 3171 | |
3f93da98 | 3172 | if (!path_is_absolute(i.path)) { |
d9daae55 | 3173 | *invalid_config = true; |
d02933fd LP |
3174 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3175 | "Path '%s' not absolute.", i.path); | |
3b63d2d3 LP |
3176 | } |
3177 | ||
4ff361cc | 3178 | path_simplify(i.path); |
3b63d2d3 | 3179 | |
3f93da98 | 3180 | if (!should_include_path(i.path)) |
7f2c1f4d | 3181 | return 0; |
5008d581 | 3182 | |
4cef1923 | 3183 | r = specifier_expansion_from_arg(&i); |
5a8575ef | 3184 | if (r == -ENXIO) |
4cef1923 | 3185 | return log_unresolvable_specifier(fname, line); |
751223fe ZJS |
3186 | if (r < 0) { |
3187 | if (IN_SET(r, -EINVAL, -EBADSLT)) | |
3188 | *invalid_config = true; | |
d02933fd | 3189 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to substitute specifiers in argument: %m"); |
751223fe | 3190 | } |
4cef1923 | 3191 | |
7dc6477d | 3192 | if (!empty_or_root(arg_root)) { |
cde684a2 LP |
3193 | char *p; |
3194 | ||
c6134d3e | 3195 | p = path_join(arg_root, i.path); |
cf9a4abd MM |
3196 | if (!p) |
3197 | return log_oom(); | |
81fa4479 | 3198 | free_and_replace(i.path, p); |
cf9a4abd MM |
3199 | } |
3200 | ||
e7b88b7b | 3201 | if (!empty_or_dash(user)) { |
a3451c2c | 3202 | r = find_uid(user, &i.uid, uid_cache); |
4b67834e | 3203 | if (r < 0) { |
d9daae55 | 3204 | *invalid_config = true; |
d02933fd | 3205 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to resolve user '%s': %m", user); |
3b63d2d3 LP |
3206 | } |
3207 | ||
3f93da98 | 3208 | i.uid_set = true; |
3b63d2d3 LP |
3209 | } |
3210 | ||
e7b88b7b | 3211 | if (!empty_or_dash(group)) { |
a3451c2c | 3212 | r = find_gid(group, &i.gid, gid_cache); |
4b67834e | 3213 | if (r < 0) { |
d9daae55 | 3214 | *invalid_config = true; |
d02933fd | 3215 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to resolve group '%s'.", group); |
3b63d2d3 LP |
3216 | } |
3217 | ||
3f93da98 | 3218 | i.gid_set = true; |
3b63d2d3 LP |
3219 | } |
3220 | ||
e7b88b7b | 3221 | if (!empty_or_dash(mode)) { |
abef3f91 | 3222 | const char *mm = mode; |
3b63d2d3 LP |
3223 | unsigned m; |
3224 | ||
abef3f91 | 3225 | if (*mm == '~') { |
3f93da98 | 3226 | i.mask_perms = true; |
abef3f91 LP |
3227 | mm++; |
3228 | } | |
3229 | ||
d02933fd LP |
3230 | r = parse_mode(mm, &m); |
3231 | if (r < 0) { | |
d9daae55 | 3232 | *invalid_config = true; |
d02933fd | 3233 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Invalid mode '%s'.", mode); |
3b63d2d3 LP |
3234 | } |
3235 | ||
3f93da98 ZJS |
3236 | i.mode = m; |
3237 | i.mode_set = true; | |
3b63d2d3 | 3238 | } else |
5fb13eb5 | 3239 | i.mode = IN_SET(i.type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA) ? 0755 : 0644; |
3b63d2d3 | 3240 | |
e7b88b7b | 3241 | if (!empty_or_dash(age)) { |
24f3a374 | 3242 | const char *a = age; |
7f7a50dd | 3243 | _cleanup_free_ char *seconds = NULL, *age_by = NULL; |
24f3a374 LP |
3244 | |
3245 | if (*a == '~') { | |
3f93da98 | 3246 | i.keep_first_level = true; |
24f3a374 LP |
3247 | a++; |
3248 | } | |
3249 | ||
7f7a50dd SK |
3250 | /* Format: "age-by:age"; where age-by is "[abcmABCM]+". */ |
3251 | r = split_pair(a, ":", &age_by, &seconds); | |
3252 | if (r == -ENOMEM) | |
3253 | return log_oom(); | |
3254 | if (r < 0 && r != -EINVAL) | |
3255 | return log_error_errno(r, "Failed to parse age-by for '%s': %m", age); | |
3256 | if (r >= 0) { | |
3257 | /* We found a ":", parse the "age-by" part. */ | |
3258 | r = parse_age_by_from_arg(age_by, &i); | |
3259 | if (r == -ENOMEM) | |
3260 | return log_oom(); | |
3261 | if (r < 0) { | |
3262 | *invalid_config = true; | |
3263 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Invalid age-by '%s'.", age_by); | |
3264 | } | |
3265 | ||
3266 | /* For parsing the "age" part, after the ":". */ | |
3267 | a = seconds; | |
3268 | } | |
3269 | ||
d02933fd LP |
3270 | r = parse_sec(a, &i.age); |
3271 | if (r < 0) { | |
d9daae55 | 3272 | *invalid_config = true; |
7f7a50dd | 3273 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Invalid age '%s'.", a); |
3b63d2d3 LP |
3274 | } |
3275 | ||
3f93da98 | 3276 | i.age_set = true; |
3b63d2d3 LP |
3277 | } |
3278 | ||
3f93da98 | 3279 | h = needs_glob(i.type) ? globs : items; |
bfe95f35 | 3280 | |
ef43a391 | 3281 | existing = ordered_hashmap_get(h, i.path); |
468d726b | 3282 | if (existing) { |
96d10d78 | 3283 | size_t n; |
3f93da98 | 3284 | |
96d10d78 | 3285 | for (n = 0; n < existing->n_items; n++) { |
d0ea5c5e | 3286 | if (!item_compatible(existing->items + n, &i) && !i.append_or_force) { |
d02933fd | 3287 | log_syntax(NULL, LOG_NOTICE, fname, line, 0, "Duplicate line for path \"%s\", ignoring.", i.path); |
6487ada8 MP |
3288 | return 0; |
3289 | } | |
ebf4e801 MW |
3290 | } |
3291 | } else { | |
3f93da98 | 3292 | existing = new0(ItemArray, 1); |
07982ed1 LP |
3293 | if (!existing) |
3294 | return log_oom(); | |
3295 | ||
ef43a391 | 3296 | r = ordered_hashmap_put(h, i.path, existing); |
ccd114f0 LP |
3297 | if (r < 0) { |
3298 | free(existing); | |
3f93da98 | 3299 | return log_oom(); |
ccd114f0 | 3300 | } |
bfe95f35 LP |
3301 | } |
3302 | ||
319a4f4b | 3303 | if (!GREEDY_REALLOC(existing->items, existing->n_items + 1)) |
3f93da98 | 3304 | return log_oom(); |
5008d581 | 3305 | |
7ab7529d LP |
3306 | existing->items[existing->n_items++] = i; |
3307 | i = (struct Item) {}; | |
dd449aca ZJS |
3308 | |
3309 | /* Sort item array, to enforce stable ordering of application */ | |
96d10d78 | 3310 | typesafe_qsort(existing->items, existing->n_items, item_compare); |
17493fa5 | 3311 | |
7f2c1f4d | 3312 | return 0; |
5008d581 LP |
3313 | } |
3314 | ||
ceaaeb9b ZJS |
3315 | static int cat_config(char **config_dirs, char **args) { |
3316 | _cleanup_strv_free_ char **files = NULL; | |
3317 | int r; | |
3318 | ||
3319 | r = conf_files_list_with_replacement(arg_root, config_dirs, arg_replace, &files, NULL); | |
3320 | if (r < 0) | |
3321 | return r; | |
3322 | ||
3323 | return cat_files(NULL, files, 0); | |
3324 | } | |
3325 | ||
dd04fb32 LP |
3326 | static int exclude_default_prefixes(void) { |
3327 | int r; | |
3328 | ||
3329 | /* Provide an easy way to exclude virtual/memory file systems from what we do here. Useful in | |
3330 | * combination with --root= where we probably don't want to apply stuff to these dirs as they are | |
3331 | * likely over-mounted if the root directory is actually used, and it wouldbe less than ideal to have | |
3332 | * all kinds of files created/adjusted underneath these mount points. */ | |
3333 | ||
3334 | r = strv_extend_strv( | |
3335 | &arg_exclude_prefixes, | |
3336 | STRV_MAKE("/dev", | |
3337 | "/proc", | |
3338 | "/run", | |
3339 | "/sys"), | |
3340 | true); | |
3341 | if (r < 0) | |
3342 | return log_oom(); | |
3343 | ||
3344 | return 0; | |
3345 | } | |
3346 | ||
37ec0fdd LP |
3347 | static int help(void) { |
3348 | _cleanup_free_ char *link = NULL; | |
3349 | int r; | |
3350 | ||
3351 | r = terminal_urlify_man("systemd-tmpfiles", "8", &link); | |
3352 | if (r < 0) | |
3353 | return log_oom(); | |
3354 | ||
3f532a59 LP |
3355 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n" |
3356 | "\n%sCreates, deletes and cleans up volatile and temporary files and directories.%s\n\n" | |
5c795114 | 3357 | " -h --help Show this help\n" |
f2b5ca0e | 3358 | " --user Execute user configuration\n" |
eb9da376 | 3359 | " --version Show package version\n" |
ceaaeb9b | 3360 | " --cat-config Show configuration files\n" |
5c795114 DR |
3361 | " --create Create marked files/directories\n" |
3362 | " --clean Clean up marked directories\n" | |
3363 | " --remove Remove marked files/directories\n" | |
81815651 | 3364 | " --boot Execute actions only safe at boot\n" |
79ca888f ZJS |
3365 | " --prefix=PATH Only apply rules with the specified prefix\n" |
3366 | " --exclude-prefix=PATH Ignore rules with the specified prefix\n" | |
dd04fb32 | 3367 | " -E Ignore rules prefixed with /dev, /proc, /run, /sys\n" |
d9daae55 | 3368 | " --root=PATH Operate on an alternate filesystem root\n" |
63d3d0a5 | 3369 | " --image=PATH Operate on disk image as filesystem root\n" |
a6d8474f | 3370 | " --replace=PATH Treat arguments as replacement for PATH\n" |
dcd5c891 | 3371 | " --no-pager Do not pipe output into a pager\n" |
bc556335 DDM |
3372 | "\nSee the %s for details.\n", |
3373 | program_invocation_short_name, | |
3374 | ansi_highlight(), | |
3375 | ansi_normal(), | |
3376 | link); | |
37ec0fdd LP |
3377 | |
3378 | return 0; | |
3b63d2d3 LP |
3379 | } |
3380 | ||
3381 | static int parse_argv(int argc, char *argv[]) { | |
3382 | ||
3383 | enum { | |
eb9da376 | 3384 | ARG_VERSION = 0x100, |
ceaaeb9b | 3385 | ARG_CAT_CONFIG, |
f2b5ca0e | 3386 | ARG_USER, |
3b63d2d3 LP |
3387 | ARG_CREATE, |
3388 | ARG_CLEAN, | |
fba6e687 | 3389 | ARG_REMOVE, |
81815651 | 3390 | ARG_BOOT, |
5c795114 DR |
3391 | ARG_PREFIX, |
3392 | ARG_EXCLUDE_PREFIX, | |
cf9a4abd | 3393 | ARG_ROOT, |
63d3d0a5 | 3394 | ARG_IMAGE, |
a6d8474f | 3395 | ARG_REPLACE, |
dcd5c891 | 3396 | ARG_NO_PAGER, |
3b63d2d3 LP |
3397 | }; |
3398 | ||
3399 | static const struct option options[] = { | |
5c795114 | 3400 | { "help", no_argument, NULL, 'h' }, |
f2b5ca0e | 3401 | { "user", no_argument, NULL, ARG_USER }, |
eb9da376 | 3402 | { "version", no_argument, NULL, ARG_VERSION }, |
ceaaeb9b | 3403 | { "cat-config", no_argument, NULL, ARG_CAT_CONFIG }, |
5c795114 DR |
3404 | { "create", no_argument, NULL, ARG_CREATE }, |
3405 | { "clean", no_argument, NULL, ARG_CLEAN }, | |
3406 | { "remove", no_argument, NULL, ARG_REMOVE }, | |
81815651 | 3407 | { "boot", no_argument, NULL, ARG_BOOT }, |
5c795114 DR |
3408 | { "prefix", required_argument, NULL, ARG_PREFIX }, |
3409 | { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX }, | |
cf9a4abd | 3410 | { "root", required_argument, NULL, ARG_ROOT }, |
63d3d0a5 | 3411 | { "image", required_argument, NULL, ARG_IMAGE }, |
a6d8474f | 3412 | { "replace", required_argument, NULL, ARG_REPLACE }, |
dcd5c891 | 3413 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, |
eb9da376 | 3414 | {} |
3b63d2d3 LP |
3415 | }; |
3416 | ||
0f474365 | 3417 | int c, r; |
3b63d2d3 LP |
3418 | |
3419 | assert(argc >= 0); | |
3420 | assert(argv); | |
3421 | ||
dd04fb32 | 3422 | while ((c = getopt_long(argc, argv, "hE", options, NULL)) >= 0) |
3b63d2d3 LP |
3423 | |
3424 | switch (c) { | |
3425 | ||
3426 | case 'h': | |
37ec0fdd | 3427 | return help(); |
eb9da376 LP |
3428 | |
3429 | case ARG_VERSION: | |
3f6fd1ba | 3430 | return version(); |
3b63d2d3 | 3431 | |
ceaaeb9b ZJS |
3432 | case ARG_CAT_CONFIG: |
3433 | arg_cat_config = true; | |
3434 | break; | |
3435 | ||
f2b5ca0e ZJS |
3436 | case ARG_USER: |
3437 | arg_user = true; | |
3438 | break; | |
3439 | ||
3b63d2d3 | 3440 | case ARG_CREATE: |
1a967b6b | 3441 | arg_operation |= OPERATION_CREATE; |
3b63d2d3 LP |
3442 | break; |
3443 | ||
3444 | case ARG_CLEAN: | |
1a967b6b | 3445 | arg_operation |= OPERATION_CLEAN; |
3b63d2d3 LP |
3446 | break; |
3447 | ||
3448 | case ARG_REMOVE: | |
1a967b6b | 3449 | arg_operation |= OPERATION_REMOVE; |
3b63d2d3 LP |
3450 | break; |
3451 | ||
81815651 ZJS |
3452 | case ARG_BOOT: |
3453 | arg_boot = true; | |
c4708f13 ZJS |
3454 | break; |
3455 | ||
fba6e687 | 3456 | case ARG_PREFIX: |
7bc040fa | 3457 | if (strv_push(&arg_include_prefixes, optarg) < 0) |
a2aced4a | 3458 | return log_oom(); |
fba6e687 LP |
3459 | break; |
3460 | ||
5c795114 | 3461 | case ARG_EXCLUDE_PREFIX: |
7bc040fa | 3462 | if (strv_push(&arg_exclude_prefixes, optarg) < 0) |
5c795114 DR |
3463 | return log_oom(); |
3464 | break; | |
3465 | ||
63d3d0a5 | 3466 | case ARG_ROOT: |
614b022c | 3467 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root); |
dd04fb32 LP |
3468 | if (r < 0) |
3469 | return r; | |
dd04fb32 LP |
3470 | break; |
3471 | ||
63d3d0a5 | 3472 | case ARG_IMAGE: |
3537577c ZJS |
3473 | #ifdef STANDALONE |
3474 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3475 | "This systemd-tmpfiles version is compiled without support for --image=."); | |
3476 | #else | |
614b022c | 3477 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); |
63d3d0a5 LP |
3478 | if (r < 0) |
3479 | return r; | |
3537577c ZJS |
3480 | #endif |
3481 | /* Imply -E here since it makes little sense to create files persistently in the /run mountpoint of a disk image */ | |
63d3d0a5 LP |
3482 | _fallthrough_; |
3483 | ||
3484 | case 'E': | |
3485 | r = exclude_default_prefixes(); | |
0f474365 | 3486 | if (r < 0) |
0f03c2a4 | 3487 | return r; |
63d3d0a5 | 3488 | |
cf9a4abd MM |
3489 | break; |
3490 | ||
a6d8474f ZJS |
3491 | case ARG_REPLACE: |
3492 | if (!path_is_absolute(optarg) || | |
baaa35ad ZJS |
3493 | !endswith(optarg, ".conf")) |
3494 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3495 | "The argument to --replace= must an absolute path to a config file"); | |
a6d8474f ZJS |
3496 | |
3497 | arg_replace = optarg; | |
3498 | break; | |
3499 | ||
dcd5c891 | 3500 | case ARG_NO_PAGER: |
0221d68a | 3501 | arg_pager_flags |= PAGER_DISABLE; |
dcd5c891 LP |
3502 | break; |
3503 | ||
3b63d2d3 LP |
3504 | case '?': |
3505 | return -EINVAL; | |
3506 | ||
3507 | default: | |
04499a70 | 3508 | assert_not_reached(); |
3b63d2d3 | 3509 | } |
3b63d2d3 | 3510 | |
baaa35ad ZJS |
3511 | if (arg_operation == 0 && !arg_cat_config) |
3512 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3513 | "You need to specify at least one of --clean, --create or --remove."); | |
3b63d2d3 | 3514 | |
baaa35ad ZJS |
3515 | if (arg_replace && arg_cat_config) |
3516 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3517 | "Option --replace= is not supported with --cat-config"); | |
ceaaeb9b | 3518 | |
baaa35ad ZJS |
3519 | if (arg_replace && optind >= argc) |
3520 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3521 | "When --replace= is given, some configuration items must be specified"); | |
a6d8474f | 3522 | |
b63aacaa LP |
3523 | if (arg_root && arg_user) |
3524 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3525 | "Combination of --user and --root= is not supported."); | |
3526 | ||
63d3d0a5 LP |
3527 | if (arg_image && arg_root) |
3528 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported."); | |
3529 | ||
3b63d2d3 LP |
3530 | return 1; |
3531 | } | |
3532 | ||
a6d8474f | 3533 | static int read_config_file(char **config_dirs, const char *fn, bool ignore_enoent, bool *invalid_config) { |
a3451c2c | 3534 | _cleanup_(hashmap_freep) Hashmap *uid_cache = NULL, *gid_cache = NULL; |
f7ac1ed2 | 3535 | _cleanup_fclose_ FILE *_f = NULL; |
2708160c | 3536 | _cleanup_free_ char *pp = NULL; |
1731e34a | 3537 | unsigned v = 0; |
2a98ae4a | 3538 | FILE *f; |
bec890e3 | 3539 | ItemArray *ia; |
4e68ec18 | 3540 | int r = 0; |
fba6e687 LP |
3541 | |
3542 | assert(fn); | |
3543 | ||
f7ac1ed2 | 3544 | if (streq(fn, "-")) { |
a6d8474f | 3545 | log_debug("Reading config from stdin…"); |
f7ac1ed2 ZJS |
3546 | fn = "<stdin>"; |
3547 | f = stdin; | |
3548 | } else { | |
2708160c | 3549 | r = search_and_fopen(fn, "re", arg_root, (const char**) config_dirs, &_f, &pp); |
f7ac1ed2 ZJS |
3550 | if (r < 0) { |
3551 | if (ignore_enoent && r == -ENOENT) { | |
3552 | log_debug_errno(r, "Failed to open \"%s\", ignoring: %m", fn); | |
3553 | return 0; | |
3554 | } | |
fba6e687 | 3555 | |
f7ac1ed2 ZJS |
3556 | return log_error_errno(r, "Failed to open '%s': %m", fn); |
3557 | } | |
2708160c LP |
3558 | |
3559 | log_debug("Reading config file \"%s\"…", pp); | |
3560 | fn = pp; | |
f7ac1ed2 | 3561 | f = _f; |
fba6e687 LP |
3562 | } |
3563 | ||
2a98ae4a LP |
3564 | for (;;) { |
3565 | _cleanup_free_ char *line = NULL; | |
3566 | bool invalid_line = false; | |
1731e34a | 3567 | char *l; |
fba6e687 | 3568 | int k; |
2a98ae4a LP |
3569 | |
3570 | k = read_line(f, LONG_LINE_MAX, &line); | |
3571 | if (k < 0) | |
3572 | return log_error_errno(k, "Failed to read '%s': %m", fn); | |
3573 | if (k == 0) | |
3574 | break; | |
fba6e687 | 3575 | |
fba6e687 LP |
3576 | v++; |
3577 | ||
3578 | l = strstrip(line); | |
4c701096 | 3579 | if (IN_SET(*l, 0, '#')) |
fba6e687 LP |
3580 | continue; |
3581 | ||
a3451c2c | 3582 | k = parse_line(fn, v, l, &invalid_line, &uid_cache, &gid_cache); |
d9daae55 ZJS |
3583 | if (k < 0) { |
3584 | if (invalid_line) | |
3585 | /* Allow reporting with a special code if the caller requested this */ | |
3586 | *invalid_config = true; | |
3587 | else if (r == 0) | |
3588 | /* The first error becomes our return value */ | |
3589 | r = k; | |
3590 | } | |
fba6e687 LP |
3591 | } |
3592 | ||
78a92a5a | 3593 | /* we have to determine age parameter for each entry of type X */ |
bec890e3 MM |
3594 | ORDERED_HASHMAP_FOREACH(ia, globs) |
3595 | for (size_t ni = 0; ni < ia->n_items; ni++) { | |
3596 | ItemArray *ja; | |
3597 | Item *i = ia->items + ni, *candidate_item = NULL; | |
78a92a5a | 3598 | |
bec890e3 | 3599 | if (i->type != IGNORE_DIRECTORY_PATH) |
78a92a5a MS |
3600 | continue; |
3601 | ||
bec890e3 MM |
3602 | ORDERED_HASHMAP_FOREACH(ja, items) |
3603 | for (size_t nj = 0; nj < ja->n_items; nj++) { | |
3604 | Item *j = ja->items + nj; | |
78a92a5a | 3605 | |
875e7b25 ZJS |
3606 | if (!IN_SET(j->type, CREATE_DIRECTORY, |
3607 | TRUNCATE_DIRECTORY, | |
3608 | CREATE_SUBVOLUME, | |
3609 | CREATE_SUBVOLUME_INHERIT_QUOTA, | |
3610 | CREATE_SUBVOLUME_NEW_QUOTA)) | |
bec890e3 | 3611 | continue; |
78a92a5a | 3612 | |
bec890e3 MM |
3613 | if (path_equal(j->path, i->path)) { |
3614 | candidate_item = j; | |
3615 | break; | |
3616 | } | |
3617 | ||
875e7b25 ZJS |
3618 | if (candidate_item |
3619 | ? (path_startswith(j->path, candidate_item->path) && fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0) | |
3620 | : path_startswith(i->path, j->path) != NULL) | |
bec890e3 MM |
3621 | candidate_item = j; |
3622 | } | |
3623 | ||
3624 | if (candidate_item && candidate_item->age_set) { | |
3625 | i->age = candidate_item->age; | |
3626 | i->age_set = true; | |
3627 | } | |
78a92a5a | 3628 | } |
78a92a5a | 3629 | |
fba6e687 | 3630 | if (ferror(f)) { |
56f64d95 | 3631 | log_error_errno(errno, "Failed to read from file %s: %m", fn); |
fba6e687 LP |
3632 | if (r == 0) |
3633 | r = -EIO; | |
3634 | } | |
3635 | ||
fba6e687 LP |
3636 | return r; |
3637 | } | |
3638 | ||
a6d8474f ZJS |
3639 | static int parse_arguments(char **config_dirs, char **args, bool *invalid_config) { |
3640 | char **arg; | |
3641 | int r; | |
3642 | ||
3643 | STRV_FOREACH(arg, args) { | |
3644 | r = read_config_file(config_dirs, *arg, false, invalid_config); | |
3645 | if (r < 0) | |
3646 | return r; | |
3647 | } | |
3648 | ||
3649 | return 0; | |
3650 | } | |
3651 | ||
3652 | static int read_config_files(char **config_dirs, char **args, bool *invalid_config) { | |
3653 | _cleanup_strv_free_ char **files = NULL; | |
3654 | _cleanup_free_ char *p = NULL; | |
3655 | char **f; | |
3656 | int r; | |
3657 | ||
ceaaeb9b | 3658 | r = conf_files_list_with_replacement(arg_root, config_dirs, arg_replace, &files, &p); |
a6d8474f | 3659 | if (r < 0) |
ceaaeb9b | 3660 | return r; |
a6d8474f ZJS |
3661 | |
3662 | STRV_FOREACH(f, files) | |
3663 | if (p && path_equal(*f, p)) { | |
3664 | log_debug("Parsing arguments at position \"%s\"…", *f); | |
3665 | ||
3666 | r = parse_arguments(config_dirs, args, invalid_config); | |
3667 | if (r < 0) | |
3668 | return r; | |
3669 | } else | |
3670 | /* Just warn, ignore result otherwise. | |
3671 | * read_config_file() has some debug output, so no need to print anything. */ | |
3672 | (void) read_config_file(config_dirs, *f, true, invalid_config); | |
3673 | ||
3674 | return 0; | |
3675 | } | |
3676 | ||
811a1587 LP |
3677 | static int link_parent(ItemArray *a) { |
3678 | const char *path; | |
3679 | char *prefix; | |
3680 | int r; | |
3681 | ||
3682 | assert(a); | |
3683 | ||
09f467ac | 3684 | /* Finds the closest "parent" item array for the specified item array. Then registers the specified item array |
811a1587 LP |
3685 | * as child of it, and fills the parent in, linking them both ways. This allows us to later create parents |
3686 | * before their children, and clean up/remove children before their parents. */ | |
3687 | ||
3688 | if (a->n_items <= 0) | |
3689 | return 0; | |
3690 | ||
3691 | path = a->items[0].path; | |
6e9417f5 | 3692 | prefix = newa(char, strlen(path) + 1); |
811a1587 LP |
3693 | PATH_FOREACH_PREFIX(prefix, path) { |
3694 | ItemArray *j; | |
3695 | ||
3696 | j = ordered_hashmap_get(items, prefix); | |
bd0ce244 LP |
3697 | if (!j) |
3698 | j = ordered_hashmap_get(globs, prefix); | |
811a1587 | 3699 | if (j) { |
de7fef4b | 3700 | r = set_ensure_put(&j->children, NULL, a); |
811a1587 LP |
3701 | if (r < 0) |
3702 | return log_oom(); | |
3703 | ||
3704 | a->parent = j; | |
3705 | return 1; | |
3706 | } | |
3707 | } | |
3708 | ||
3709 | return 0; | |
3710 | } | |
3711 | ||
87938c3b YW |
3712 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(item_array_hash_ops, char, string_hash_func, string_compare_func, |
3713 | ItemArray, item_array_free); | |
3714 | ||
3715 | static int run(int argc, char *argv[]) { | |
3537577c | 3716 | #ifndef STANDALONE |
63d3d0a5 LP |
3717 | _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; |
3718 | _cleanup_(decrypted_image_unrefp) DecryptedImage *decrypted_image = NULL; | |
3719 | _cleanup_(umount_and_rmdir_and_freep) char *unlink_dir = NULL; | |
3537577c | 3720 | #endif |
f2b5ca0e | 3721 | _cleanup_strv_free_ char **config_dirs = NULL; |
d9daae55 | 3722 | bool invalid_config = false; |
64adb379 | 3723 | ItemArray *a; |
44ac4f88 LP |
3724 | enum { |
3725 | PHASE_REMOVE_AND_CLEAN, | |
3726 | PHASE_CREATE, | |
3727 | _PHASE_MAX | |
3728 | } phase; | |
87938c3b | 3729 | int r, k; |
3b63d2d3 | 3730 | |
fdcad0c2 LP |
3731 | r = parse_argv(argc, argv); |
3732 | if (r <= 0) | |
87938c3b | 3733 | return r; |
5008d581 | 3734 | |
d2acb93d | 3735 | log_setup(); |
5008d581 | 3736 | |
01131684 LP |
3737 | /* We require /proc/ for a lot of our operations, i.e. for adjusting access modes, for anything |
3738 | * SELinux related, for recursive operation, for xattr, acl and chattr handling, for btrfs stuff and | |
3739 | * a lot more. It's probably the majority of invocations where /proc/ is required. Since people | |
3740 | * apparently invoke it without anyway and are surprised about the failures, let's catch this early | |
3741 | * and output a nice and friendly warning. */ | |
3742 | if (proc_mounted() == 0) | |
3743 | return log_error_errno(SYNTHETIC_ERRNO(ENOSYS), | |
3744 | "/proc/ is not mounted, but required for successful operation of systemd-tmpfiles. " | |
3745 | "Please mount /proc/. Alternatively, consider using the --root= or --image= switches."); | |
3746 | ||
e5358401 LP |
3747 | /* Descending down file system trees might take a lot of fds */ |
3748 | (void) rlimit_nofile_bump(HIGH_RLIMIT_NOFILE); | |
3749 | ||
f2b5ca0e ZJS |
3750 | if (arg_user) { |
3751 | r = user_config_paths(&config_dirs); | |
87938c3b YW |
3752 | if (r < 0) |
3753 | return log_error_errno(r, "Failed to initialize configuration directory list: %m"); | |
f2b5ca0e ZJS |
3754 | } else { |
3755 | config_dirs = strv_split_nulstr(CONF_PATHS_NULSTR("tmpfiles.d")); | |
87938c3b YW |
3756 | if (!config_dirs) |
3757 | return log_oom(); | |
f2b5ca0e ZJS |
3758 | } |
3759 | ||
79c91cec | 3760 | if (DEBUG_LOGGING) { |
f2b5ca0e | 3761 | _cleanup_free_ char *t = NULL; |
b8e35011 | 3762 | char **i; |
f2b5ca0e | 3763 | |
b8e35011 LP |
3764 | STRV_FOREACH(i, config_dirs) { |
3765 | _cleanup_free_ char *j = NULL; | |
3766 | ||
3767 | j = path_join(arg_root, *i); | |
3768 | if (!j) | |
3769 | return log_oom(); | |
3770 | ||
c2bc710b | 3771 | if (!strextend(&t, "\n\t", j)) |
b8e35011 LP |
3772 | return log_oom(); |
3773 | } | |
3774 | ||
3775 | log_debug("Looking for configuration files in (higher priority first):%s", t); | |
f2b5ca0e ZJS |
3776 | } |
3777 | ||
ceaaeb9b | 3778 | if (arg_cat_config) { |
0221d68a | 3779 | (void) pager_open(arg_pager_flags); |
dcd5c891 | 3780 | |
87938c3b | 3781 | return cat_config(config_dirs, argv + optind); |
ceaaeb9b ZJS |
3782 | } |
3783 | ||
3784 | umask(0022); | |
3785 | ||
a9ba0e32 CG |
3786 | r = mac_selinux_init(); |
3787 | if (r < 0) | |
3788 | return r; | |
ceaaeb9b | 3789 | |
3537577c | 3790 | #ifndef STANDALONE |
63d3d0a5 LP |
3791 | if (arg_image) { |
3792 | assert(!arg_root); | |
3793 | ||
3794 | r = mount_image_privately_interactively( | |
3795 | arg_image, | |
4b5de5dd LP |
3796 | DISSECT_IMAGE_GENERIC_ROOT | |
3797 | DISSECT_IMAGE_REQUIRE_ROOT | | |
3798 | DISSECT_IMAGE_VALIDATE_OS | | |
3799 | DISSECT_IMAGE_RELAX_VAR_CHECK | | |
c65f854a LP |
3800 | DISSECT_IMAGE_FSCK | |
3801 | DISSECT_IMAGE_GROWFS, | |
63d3d0a5 LP |
3802 | &unlink_dir, |
3803 | &loop_device, | |
3804 | &decrypted_image); | |
3805 | if (r < 0) | |
3806 | return r; | |
3807 | ||
3808 | arg_root = strdup(unlink_dir); | |
3809 | if (!arg_root) | |
3810 | return log_oom(); | |
3811 | } | |
3537577c ZJS |
3812 | #else |
3813 | assert(!arg_image); | |
3814 | #endif | |
63d3d0a5 | 3815 | |
87938c3b YW |
3816 | items = ordered_hashmap_new(&item_array_hash_ops); |
3817 | globs = ordered_hashmap_new(&item_array_hash_ops); | |
3818 | if (!items || !globs) | |
3819 | return log_oom(); | |
ceaaeb9b | 3820 | |
a6d8474f ZJS |
3821 | /* If command line arguments are specified along with --replace, read all |
3822 | * configuration files and insert the positional arguments at the specified | |
3823 | * place. Otherwise, if command line arguments are specified, execute just | |
3824 | * them, and finally, without --replace= or any positional arguments, just | |
3825 | * read configuration and execute it. | |
3826 | */ | |
3827 | if (arg_replace || optind >= argc) | |
3828 | r = read_config_files(config_dirs, argv + optind, &invalid_config); | |
3829 | else | |
3830 | r = parse_arguments(config_dirs, argv + optind, &invalid_config); | |
3831 | if (r < 0) | |
87938c3b | 3832 | return r; |
5008d581 | 3833 | |
811a1587 | 3834 | /* Let's now link up all child/parent relationships */ |
90e74a66 | 3835 | ORDERED_HASHMAP_FOREACH(a, items) { |
811a1587 LP |
3836 | r = link_parent(a); |
3837 | if (r < 0) | |
87938c3b | 3838 | return r; |
1db50423 | 3839 | } |
90e74a66 | 3840 | ORDERED_HASHMAP_FOREACH(a, globs) { |
811a1587 LP |
3841 | r = link_parent(a); |
3842 | if (r < 0) | |
87938c3b | 3843 | return r; |
811a1587 LP |
3844 | } |
3845 | ||
64adb379 LP |
3846 | /* If multiple operations are requested, let's first run the remove/clean operations, and only then the create |
3847 | * operations. i.e. that we first clean out the platform we then build on. */ | |
44ac4f88 | 3848 | for (phase = 0; phase < _PHASE_MAX; phase++) { |
64adb379 | 3849 | OperationMask op; |
b8bb3e8f | 3850 | |
44ac4f88 | 3851 | if (phase == PHASE_REMOVE_AND_CLEAN) |
64adb379 | 3852 | op = arg_operation & (OPERATION_REMOVE|OPERATION_CLEAN); |
44ac4f88 | 3853 | else if (phase == PHASE_CREATE) |
64adb379 LP |
3854 | op = arg_operation & OPERATION_CREATE; |
3855 | else | |
04499a70 | 3856 | assert_not_reached(); |
64adb379 LP |
3857 | |
3858 | if (op == 0) /* Nothing requested in this phase */ | |
3859 | continue; | |
3860 | ||
3861 | /* The non-globbing ones usually create things, hence we apply them first */ | |
90e74a66 | 3862 | ORDERED_HASHMAP_FOREACH(a, items) { |
64adb379 | 3863 | k = process_item_array(a, op); |
87938c3b YW |
3864 | if (k < 0 && r >= 0) |
3865 | r = k; | |
64adb379 LP |
3866 | } |
3867 | ||
3868 | /* The globbing ones usually alter things, hence we apply them second. */ | |
90e74a66 | 3869 | ORDERED_HASHMAP_FOREACH(a, globs) { |
64adb379 | 3870 | k = process_item_array(a, op); |
87938c3b YW |
3871 | if (k < 0 && r >= 0) |
3872 | r = k; | |
64adb379 | 3873 | } |
1db50423 | 3874 | } |
3b63d2d3 | 3875 | |
95d2155a | 3876 | if (ERRNO_IS_RESOURCE(r)) |
87938c3b YW |
3877 | return r; |
3878 | if (invalid_config) | |
d9daae55 | 3879 | return EX_DATAERR; |
87938c3b | 3880 | if (r < 0) |
bb9947be | 3881 | return EX_CANTCREAT; |
87938c3b | 3882 | return 0; |
5008d581 | 3883 | } |
87938c3b YW |
3884 | |
3885 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |