]>
Commit | Line | Data |
---|---|---|
53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
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" |
4f5dd394 | 29 | #include "escape.h" |
3ffd4af2 | 30 | #include "fd-util.h" |
0d39fa9c | 31 | #include "fileio.h" |
f97b34a6 | 32 | #include "format-util.h" |
f4f15635 | 33 | #include "fs-util.h" |
7d50b32a | 34 | #include "glob-util.h" |
c004493c | 35 | #include "io-util.h" |
3f6fd1ba | 36 | #include "label.h" |
5008d581 | 37 | #include "log.h" |
54693d9b | 38 | #include "macro.h" |
87938c3b | 39 | #include "main-func.h" |
49e942b2 | 40 | #include "mkdir.h" |
049af8ad | 41 | #include "mountpoint-util.h" |
a3451c2c | 42 | #include "offline-passwd.h" |
dcd5c891 | 43 | #include "pager.h" |
6bedfcbb | 44 | #include "parse-util.h" |
f2b5ca0e | 45 | #include "path-lookup.h" |
9eb977db | 46 | #include "path-util.h" |
294bf0c3 | 47 | #include "pretty-print.h" |
e5358401 | 48 | #include "rlimit-util.h" |
c6878637 | 49 | #include "rm-rf.h" |
d7b8eec7 | 50 | #include "selinux-util.h" |
3f6fd1ba | 51 | #include "set.h" |
760877e9 | 52 | #include "sort-util.h" |
3f6fd1ba | 53 | #include "specifier.h" |
8fcde012 | 54 | #include "stat-util.h" |
15a5e950 | 55 | #include "stdio-util.h" |
8b43440b | 56 | #include "string-table.h" |
07630cea | 57 | #include "string-util.h" |
3f6fd1ba | 58 | #include "strv.h" |
affb60b1 | 59 | #include "umask-util.h" |
b1d4f8e1 | 60 | #include "user-util.h" |
5008d581 | 61 | |
01000479 | 62 | /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates |
5008d581 | 63 | * them in the file system. This is intended to be used to create |
db019b8d KS |
64 | * properly owned directories beneath /tmp, /var/tmp, /run, which are |
65 | * volatile and hence need to be recreated on bootup. */ | |
5008d581 | 66 | |
1a967b6b LP |
67 | typedef enum OperationMask { |
68 | OPERATION_CREATE = 1 << 0, | |
69 | OPERATION_REMOVE = 1 << 1, | |
70 | OPERATION_CLEAN = 1 << 2, | |
71 | } OperationMask; | |
72 | ||
66ccd038 | 73 | typedef enum ItemType { |
b8bb3e8f | 74 | /* These ones take file names */ |
3b63d2d3 | 75 | CREATE_FILE = 'f', |
eccebf4b | 76 | TRUNCATE_FILE = 'F', /* deprecated: use f+ */ |
3b63d2d3 LP |
77 | CREATE_DIRECTORY = 'd', |
78 | TRUNCATE_DIRECTORY = 'D', | |
d7b8eec7 | 79 | CREATE_SUBVOLUME = 'v', |
5fb13eb5 LP |
80 | CREATE_SUBVOLUME_INHERIT_QUOTA = 'q', |
81 | CREATE_SUBVOLUME_NEW_QUOTA = 'Q', | |
ee17ee7c | 82 | CREATE_FIFO = 'p', |
468d726b LP |
83 | CREATE_SYMLINK = 'L', |
84 | CREATE_CHAR_DEVICE = 'c', | |
85 | CREATE_BLOCK_DEVICE = 'b', | |
849958d1 | 86 | COPY_FILES = 'C', |
b8bb3e8f LP |
87 | |
88 | /* These ones take globs */ | |
17493fa5 | 89 | WRITE_FILE = 'w', |
df8dee85 | 90 | EMPTY_DIRECTORY = 'e', |
b705ab6a ZJS |
91 | SET_XATTR = 't', |
92 | RECURSIVE_SET_XATTR = 'T', | |
93 | SET_ACL = 'a', | |
94 | RECURSIVE_SET_ACL = 'A', | |
17493fa5 LP |
95 | SET_ATTRIBUTE = 'h', |
96 | RECURSIVE_SET_ATTRIBUTE = 'H', | |
3b63d2d3 | 97 | IGNORE_PATH = 'x', |
78a92a5a | 98 | IGNORE_DIRECTORY_PATH = 'X', |
3b63d2d3 | 99 | REMOVE_PATH = 'r', |
a8d88783 | 100 | RECURSIVE_REMOVE_PATH = 'R', |
777b87e7 | 101 | RELABEL_PATH = 'z', |
e73a03e0 | 102 | RECURSIVE_RELABEL_PATH = 'Z', |
17493fa5 | 103 | ADJUST_MODE = 'm', /* legacy, 'z' is identical to this */ |
66ccd038 | 104 | } ItemType; |
3b63d2d3 LP |
105 | |
106 | typedef struct Item { | |
66ccd038 | 107 | ItemType type; |
3b63d2d3 LP |
108 | |
109 | char *path; | |
468d726b | 110 | char *argument; |
ebf4e801 | 111 | char **xattrs; |
349cc4a5 | 112 | #if HAVE_ACL |
f8eeeaf9 ZJS |
113 | acl_t acl_access; |
114 | acl_t acl_default; | |
115 | #endif | |
5008d581 LP |
116 | uid_t uid; |
117 | gid_t gid; | |
3b63d2d3 LP |
118 | mode_t mode; |
119 | usec_t age; | |
120 | ||
468d726b | 121 | dev_t major_minor; |
88ec4dfa LP |
122 | unsigned attribute_value; |
123 | unsigned attribute_mask; | |
468d726b | 124 | |
3b63d2d3 LP |
125 | bool uid_set:1; |
126 | bool gid_set:1; | |
127 | bool mode_set:1; | |
128 | bool age_set:1; | |
abef3f91 | 129 | bool mask_perms:1; |
88ec4dfa | 130 | bool attribute_set:1; |
24f3a374 LP |
131 | |
132 | bool keep_first_level:1; | |
1910cd0e | 133 | |
c55ac248 | 134 | bool append_or_force:1; |
2e78fa79 | 135 | |
6d7b5433 WD |
136 | bool allow_failure:1; |
137 | ||
811a1587 | 138 | OperationMask done; |
3b63d2d3 LP |
139 | } Item; |
140 | ||
3f93da98 ZJS |
141 | typedef struct ItemArray { |
142 | Item *items; | |
96d10d78 | 143 | size_t n_items; |
64768714 | 144 | size_t allocated; |
811a1587 LP |
145 | |
146 | struct ItemArray *parent; | |
147 | Set *children; | |
3f93da98 ZJS |
148 | } ItemArray; |
149 | ||
5a8575ef | 150 | typedef enum DirectoryType { |
133bbca4 | 151 | DIRECTORY_RUNTIME, |
5a8575ef ZJS |
152 | DIRECTORY_STATE, |
153 | DIRECTORY_CACHE, | |
154 | DIRECTORY_LOGS, | |
155 | _DIRECTORY_TYPE_MAX, | |
156 | } DirectoryType; | |
157 | ||
ceaaeb9b | 158 | static bool arg_cat_config = false; |
f2b5ca0e | 159 | static bool arg_user = false; |
1a967b6b | 160 | static OperationMask arg_operation = 0; |
81815651 | 161 | static bool arg_boot = false; |
0221d68a | 162 | static PagerFlags arg_pager_flags = 0; |
3b63d2d3 | 163 | |
7bc040fa LP |
164 | static char **arg_include_prefixes = NULL; |
165 | static char **arg_exclude_prefixes = NULL; | |
cf9a4abd | 166 | static char *arg_root = NULL; |
a6d8474f | 167 | static char *arg_replace = NULL; |
fba6e687 | 168 | |
3b63d2d3 LP |
169 | #define MAX_DEPTH 256 |
170 | ||
ef43a391 | 171 | static OrderedHashmap *items = NULL, *globs = NULL; |
7bc040fa LP |
172 | static Set *unix_sockets = NULL; |
173 | ||
87938c3b YW |
174 | STATIC_DESTRUCTOR_REGISTER(items, ordered_hashmap_freep); |
175 | STATIC_DESTRUCTOR_REGISTER(globs, ordered_hashmap_freep); | |
176 | STATIC_DESTRUCTOR_REGISTER(unix_sockets, set_free_freep); | |
177 | STATIC_DESTRUCTOR_REGISTER(arg_include_prefixes, freep); | |
178 | STATIC_DESTRUCTOR_REGISTER(arg_exclude_prefixes, freep); | |
179 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); | |
180 | ||
303ee601 ZJS |
181 | static int specifier_machine_id_safe(char specifier, const void *data, const void *userdata, char **ret); |
182 | static int specifier_directory(char specifier, const void *data, const void *userdata, char **ret); | |
4cef1923 | 183 | |
bd550f78 | 184 | static const Specifier specifier_table[] = { |
4cef1923 | 185 | { 'm', specifier_machine_id_safe, NULL }, |
5a8575ef ZJS |
186 | { 'b', specifier_boot_id, NULL }, |
187 | { 'H', specifier_host_name, NULL }, | |
e97708fa | 188 | { 'l', specifier_short_host_name, NULL }, |
5a8575ef | 189 | { 'v', specifier_kernel_release, NULL }, |
268f5a54 LP |
190 | { 'a', specifier_architecture, NULL }, |
191 | { 'o', specifier_os_id, NULL }, | |
192 | { 'w', specifier_os_version_id, NULL }, | |
193 | { 'B', specifier_os_build_id, NULL }, | |
194 | { 'W', specifier_os_variant_id, NULL }, | |
5a8575ef | 195 | |
b75f0c69 DC |
196 | { 'g', specifier_group_name, NULL }, |
197 | { 'G', specifier_group_id, NULL }, | |
5a8575ef ZJS |
198 | { 'U', specifier_user_id, NULL }, |
199 | { 'u', specifier_user_name, NULL }, | |
200 | { 'h', specifier_user_home, NULL }, | |
b294e594 | 201 | |
5a8575ef ZJS |
202 | { 't', specifier_directory, UINT_TO_PTR(DIRECTORY_RUNTIME) }, |
203 | { 'S', specifier_directory, UINT_TO_PTR(DIRECTORY_STATE) }, | |
204 | { 'C', specifier_directory, UINT_TO_PTR(DIRECTORY_CACHE) }, | |
205 | { 'L', specifier_directory, UINT_TO_PTR(DIRECTORY_LOGS) }, | |
b294e594 LP |
206 | { 'T', specifier_tmp_dir, NULL }, |
207 | { 'V', specifier_var_tmp_dir, NULL }, | |
bd550f78 LP |
208 | {} |
209 | }; | |
210 | ||
303ee601 | 211 | static int specifier_machine_id_safe(char specifier, const void *data, const void *userdata, char **ret) { |
4cef1923 FB |
212 | int r; |
213 | ||
d8dab757 FB |
214 | /* If /etc/machine_id is missing or empty (e.g. in a chroot environment) |
215 | * return a recognizable error so that the caller can skip the rule | |
4cef1923 FB |
216 | * gracefully. */ |
217 | ||
218 | r = specifier_machine_id(specifier, data, userdata, ret); | |
d8dab757 | 219 | if (IN_SET(r, -ENOENT, -ENOMEDIUM)) |
5a8575ef | 220 | return -ENXIO; |
4cef1923 FB |
221 | |
222 | return r; | |
223 | } | |
224 | ||
303ee601 | 225 | static int specifier_directory(char specifier, const void *data, const void *userdata, char **ret) { |
5a8575ef ZJS |
226 | struct table_entry { |
227 | uint64_t type; | |
228 | const char *suffix; | |
229 | }; | |
230 | ||
231 | static const struct table_entry paths_system[] = { | |
232 | [DIRECTORY_RUNTIME] = { SD_PATH_SYSTEM_RUNTIME }, | |
233 | [DIRECTORY_STATE] = { SD_PATH_SYSTEM_STATE_PRIVATE }, | |
234 | [DIRECTORY_CACHE] = { SD_PATH_SYSTEM_STATE_CACHE }, | |
235 | [DIRECTORY_LOGS] = { SD_PATH_SYSTEM_STATE_LOGS }, | |
236 | }; | |
237 | ||
238 | static const struct table_entry paths_user[] = { | |
239 | [DIRECTORY_RUNTIME] = { SD_PATH_USER_RUNTIME }, | |
240 | [DIRECTORY_STATE] = { SD_PATH_USER_CONFIGURATION }, | |
241 | [DIRECTORY_CACHE] = { SD_PATH_USER_STATE_CACHE }, | |
242 | [DIRECTORY_LOGS] = { SD_PATH_USER_CONFIGURATION, "log" }, | |
243 | }; | |
244 | ||
245 | unsigned i; | |
246 | const struct table_entry *paths; | |
247 | ||
248 | assert_cc(ELEMENTSOF(paths_system) == ELEMENTSOF(paths_user)); | |
249 | paths = arg_user ? paths_user : paths_system; | |
250 | ||
251 | i = PTR_TO_UINT(data); | |
252 | assert(i < ELEMENTSOF(paths_system)); | |
253 | ||
51327bcc | 254 | return sd_path_lookup(paths[i].type, paths[i].suffix, ret); |
5a8575ef ZJS |
255 | } |
256 | ||
4cef1923 FB |
257 | static int log_unresolvable_specifier(const char *filename, unsigned line) { |
258 | static bool notified = false; | |
259 | ||
5a8575ef ZJS |
260 | /* In system mode, this is called when /etc is not fully initialized (e.g. |
261 | * in a chroot environment) where some specifiers are unresolvable. In user | |
262 | * mode, this is called when some variables are not defined. These cases are | |
263 | * not considered as an error so log at LOG_NOTICE only for the first time | |
264 | * and then downgrade this to LOG_DEBUG for the rest. */ | |
4cef1923 | 265 | |
d02933fd LP |
266 | log_syntax(NULL, |
267 | notified ? LOG_DEBUG : LOG_NOTICE, | |
268 | filename, line, 0, | |
269 | "Failed to resolve specifier: %s, skipping", | |
270 | arg_user ? "Required $XDG_... variable not defined" : "uninitialized /etc detected"); | |
4cef1923 FB |
271 | |
272 | if (!notified) | |
273 | log_notice("All rules containing unresolvable specifiers will be skipped."); | |
274 | ||
275 | notified = true; | |
276 | return 0; | |
277 | } | |
278 | ||
f2b5ca0e ZJS |
279 | static int user_config_paths(char*** ret) { |
280 | _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL; | |
281 | _cleanup_free_ char *persistent_config = NULL, *runtime_config = NULL, *data_home = NULL; | |
282 | _cleanup_strv_free_ char **res = NULL; | |
283 | int r; | |
284 | ||
285 | r = xdg_user_dirs(&config_dirs, &data_dirs); | |
286 | if (r < 0) | |
287 | return r; | |
288 | ||
289 | r = xdg_user_config_dir(&persistent_config, "/user-tmpfiles.d"); | |
290 | if (r < 0 && r != -ENXIO) | |
291 | return r; | |
292 | ||
293 | r = xdg_user_runtime_dir(&runtime_config, "/user-tmpfiles.d"); | |
294 | if (r < 0 && r != -ENXIO) | |
295 | return r; | |
296 | ||
297 | r = xdg_user_data_dir(&data_home, "/user-tmpfiles.d"); | |
298 | if (r < 0 && r != -ENXIO) | |
299 | return r; | |
300 | ||
301 | r = strv_extend_strv_concat(&res, config_dirs, "/user-tmpfiles.d"); | |
302 | if (r < 0) | |
303 | return r; | |
304 | ||
305 | r = strv_extend(&res, persistent_config); | |
306 | if (r < 0) | |
307 | return r; | |
308 | ||
309 | r = strv_extend(&res, runtime_config); | |
310 | if (r < 0) | |
311 | return r; | |
312 | ||
313 | r = strv_extend(&res, data_home); | |
314 | if (r < 0) | |
315 | return r; | |
316 | ||
317 | r = strv_extend_strv_concat(&res, data_dirs, "/user-tmpfiles.d"); | |
318 | if (r < 0) | |
319 | return r; | |
320 | ||
321 | r = path_strv_make_absolute_cwd(res); | |
322 | if (r < 0) | |
323 | return r; | |
324 | ||
ae2a15bc | 325 | *ret = TAKE_PTR(res); |
f2b5ca0e ZJS |
326 | return 0; |
327 | } | |
328 | ||
66ccd038 | 329 | static bool needs_glob(ItemType t) { |
cde684a2 LP |
330 | return IN_SET(t, |
331 | WRITE_FILE, | |
332 | IGNORE_PATH, | |
333 | IGNORE_DIRECTORY_PATH, | |
334 | REMOVE_PATH, | |
335 | RECURSIVE_REMOVE_PATH, | |
df8dee85 | 336 | EMPTY_DIRECTORY, |
e73a03e0 | 337 | ADJUST_MODE, |
cde684a2 | 338 | RELABEL_PATH, |
b705ab6a ZJS |
339 | RECURSIVE_RELABEL_PATH, |
340 | SET_XATTR, | |
341 | RECURSIVE_SET_XATTR, | |
342 | SET_ACL, | |
34f64536 LP |
343 | RECURSIVE_SET_ACL, |
344 | SET_ATTRIBUTE, | |
345 | RECURSIVE_SET_ATTRIBUTE); | |
b8bb3e8f LP |
346 | } |
347 | ||
3f93da98 ZJS |
348 | static bool takes_ownership(ItemType t) { |
349 | return IN_SET(t, | |
350 | CREATE_FILE, | |
351 | TRUNCATE_FILE, | |
352 | CREATE_DIRECTORY, | |
df8dee85 | 353 | EMPTY_DIRECTORY, |
3f93da98 ZJS |
354 | TRUNCATE_DIRECTORY, |
355 | CREATE_SUBVOLUME, | |
5fb13eb5 LP |
356 | CREATE_SUBVOLUME_INHERIT_QUOTA, |
357 | CREATE_SUBVOLUME_NEW_QUOTA, | |
3f93da98 ZJS |
358 | CREATE_FIFO, |
359 | CREATE_SYMLINK, | |
360 | CREATE_CHAR_DEVICE, | |
361 | CREATE_BLOCK_DEVICE, | |
362 | COPY_FILES, | |
3f93da98 ZJS |
363 | WRITE_FILE, |
364 | IGNORE_PATH, | |
365 | IGNORE_DIRECTORY_PATH, | |
366 | REMOVE_PATH, | |
367 | RECURSIVE_REMOVE_PATH); | |
368 | } | |
369 | ||
ef43a391 | 370 | static struct Item* find_glob(OrderedHashmap *h, const char *match) { |
3f93da98 | 371 | ItemArray *j; |
b8bb3e8f LP |
372 | Iterator i; |
373 | ||
ef43a391 | 374 | ORDERED_HASHMAP_FOREACH(j, h, i) { |
96d10d78 | 375 | size_t n; |
3f93da98 | 376 | |
96d10d78 | 377 | for (n = 0; n < j->n_items; n++) { |
3f93da98 ZJS |
378 | Item *item = j->items + n; |
379 | ||
380 | if (fnmatch(item->path, match, FNM_PATHNAME|FNM_PERIOD) == 0) | |
381 | return item; | |
382 | } | |
383 | } | |
b8bb3e8f LP |
384 | |
385 | return NULL; | |
386 | } | |
387 | ||
71a0be76 YW |
388 | static int load_unix_sockets(void) { |
389 | _cleanup_set_free_free_ Set *sockets = NULL; | |
7fd1b19b | 390 | _cleanup_fclose_ FILE *f = NULL; |
f1ff734f | 391 | int r; |
17b90525 LP |
392 | |
393 | if (unix_sockets) | |
71a0be76 | 394 | return 0; |
17b90525 | 395 | |
f1ff734f | 396 | /* We maintain a cache of the sockets we found in /proc/net/unix to speed things up a little. */ |
17b90525 | 397 | |
71a0be76 YW |
398 | sockets = set_new(&path_hash_ops); |
399 | if (!sockets) | |
400 | return log_oom(); | |
17b90525 | 401 | |
fdcad0c2 | 402 | f = fopen("/proc/net/unix", "re"); |
71a0be76 YW |
403 | if (!f) |
404 | return log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_WARNING, errno, | |
405 | "Failed to open /proc/net/unix, ignoring: %m"); | |
17b90525 | 406 | |
fdcad0c2 | 407 | /* Skip header */ |
f1ff734f | 408 | r = read_line(f, LONG_LINE_MAX, NULL); |
71a0be76 YW |
409 | if (r < 0) |
410 | return log_warning_errno(r, "Failed to skip /proc/net/unix header line: %m"); | |
411 | if (r == 0) | |
412 | return log_warning_errno(SYNTHETIC_ERRNO(EIO), "Premature end of file reading /proc/net/unix."); | |
17b90525 LP |
413 | |
414 | for (;;) { | |
71a0be76 YW |
415 | _cleanup_free_ char *line = NULL, *s = NULL; |
416 | char *p; | |
17b90525 | 417 | |
f1ff734f | 418 | r = read_line(f, LONG_LINE_MAX, &line); |
71a0be76 YW |
419 | if (r < 0) |
420 | return log_warning_errno(r, "Failed to read /proc/net/unix line, ignoring: %m"); | |
f1ff734f | 421 | if (r == 0) /* EOF */ |
17b90525 LP |
422 | break; |
423 | ||
fdcad0c2 LP |
424 | p = strchr(line, ':'); |
425 | if (!p) | |
426 | continue; | |
427 | ||
428 | if (strlen(p) < 37) | |
17b90525 LP |
429 | continue; |
430 | ||
fdcad0c2 | 431 | p += 37; |
17b90525 | 432 | p += strspn(p, WHITESPACE); |
fdcad0c2 | 433 | p += strcspn(p, WHITESPACE); /* skip one more word */ |
17b90525 LP |
434 | p += strspn(p, WHITESPACE); |
435 | ||
436 | if (*p != '/') | |
437 | continue; | |
438 | ||
fdcad0c2 | 439 | s = strdup(p); |
71a0be76 YW |
440 | if (!s) |
441 | return log_oom(); | |
17b90525 | 442 | |
858d36c1 | 443 | path_simplify(s, false); |
4ff21d85 | 444 | |
71a0be76 YW |
445 | r = set_consume(sockets, s); |
446 | if (r == -EEXIST) | |
447 | continue; | |
448 | if (r < 0) | |
449 | return log_warning_errno(r, "Failed to add AF_UNIX socket to set, ignoring: %m"); | |
17b90525 | 450 | |
71a0be76 YW |
451 | TAKE_PTR(s); |
452 | } | |
17b90525 | 453 | |
71a0be76 YW |
454 | unix_sockets = TAKE_PTR(sockets); |
455 | return 1; | |
17b90525 LP |
456 | } |
457 | ||
458 | static bool unix_socket_alive(const char *fn) { | |
459 | assert(fn); | |
460 | ||
71a0be76 YW |
461 | if (load_unix_sockets() < 0) |
462 | return true; /* We don't know, so assume yes */ | |
17b90525 | 463 | |
71a0be76 | 464 | return !!set_get(unix_sockets, (char*) fn); |
17b90525 LP |
465 | } |
466 | ||
df99a9ef ZJS |
467 | static DIR* xopendirat_nomod(int dirfd, const char *path) { |
468 | DIR *dir; | |
469 | ||
470 | dir = xopendirat(dirfd, path, O_NOFOLLOW|O_NOATIME); | |
1532227a LP |
471 | if (dir) |
472 | return dir; | |
473 | ||
474 | log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); | |
475 | if (errno != EPERM) | |
476 | return NULL; | |
477 | ||
478 | dir = xopendirat(dirfd, path, O_NOFOLLOW); | |
479 | if (!dir) | |
480 | log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); | |
df99a9ef ZJS |
481 | |
482 | return dir; | |
483 | } | |
484 | ||
485 | static DIR* opendir_nomod(const char *path) { | |
486 | return xopendirat_nomod(AT_FDCWD, path); | |
487 | } | |
488 | ||
3b63d2d3 | 489 | static int dir_cleanup( |
78a92a5a | 490 | Item *i, |
3b63d2d3 LP |
491 | const char *p, |
492 | DIR *d, | |
493 | const struct stat *ds, | |
494 | usec_t cutoff, | |
495 | dev_t rootdev, | |
496 | bool mountpoint, | |
24f3a374 | 497 | int maxdepth, |
265ffa1e LP |
498 | bool keep_this_level) { |
499 | ||
3b63d2d3 | 500 | struct dirent *dent; |
3b63d2d3 | 501 | bool deleted = false; |
3b63d2d3 LP |
502 | int r = 0; |
503 | ||
8fb3f009 | 504 | FOREACH_DIRENT_ALL(dent, d, break) { |
3b63d2d3 LP |
505 | struct stat s; |
506 | usec_t age; | |
7fd1b19b | 507 | _cleanup_free_ char *sub_path = NULL; |
3b63d2d3 | 508 | |
49bfc877 | 509 | if (dot_or_dot_dot(dent->d_name)) |
3b63d2d3 | 510 | continue; |
5008d581 | 511 | |
3b63d2d3 | 512 | if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) { |
ca2f4176 KS |
513 | if (errno == ENOENT) |
514 | continue; | |
5008d581 | 515 | |
ca2f4176 | 516 | /* FUSE, NFS mounts, SELinux might return EACCES */ |
ecc1709c LP |
517 | r = log_full_errno(errno == EACCES ? LOG_DEBUG : LOG_ERR, errno, |
518 | "stat(%s/%s) failed: %m", p, dent->d_name); | |
3b63d2d3 LP |
519 | continue; |
520 | } | |
521 | ||
522 | /* Stay on the same filesystem */ | |
582deb84 ZJS |
523 | if (s.st_dev != rootdev) { |
524 | log_debug("Ignoring \"%s/%s\": different filesystem.", p, dent->d_name); | |
3b63d2d3 | 525 | continue; |
582deb84 | 526 | } |
3b63d2d3 | 527 | |
99d680ac KS |
528 | /* Try to detect bind mounts of the same filesystem instance; they |
529 | * do not differ in device major/minors. This type of query is not | |
530 | * supported on all kernels or filesystem types though. */ | |
60bdc0ca LP |
531 | if (S_ISDIR(s.st_mode)) { |
532 | int q; | |
533 | ||
534 | q = fd_is_mount_point(dirfd(d), dent->d_name, 0); | |
535 | if (q < 0) | |
536 | log_debug_errno(q, "Failed to determine whether \"%s/%s\" is a mount point, ignoring: %m", p, dent->d_name); | |
537 | else if (q > 0) { | |
538 | log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.", p, dent->d_name); | |
539 | continue; | |
540 | } | |
582deb84 | 541 | } |
99d680ac | 542 | |
113ed3be | 543 | sub_path = path_join(p, dent->d_name); |
cde684a2 | 544 | if (!sub_path) { |
0d0f0c50 | 545 | r = log_oom(); |
3b63d2d3 LP |
546 | goto finish; |
547 | } | |
548 | ||
549 | /* Is there an item configured for this path? */ | |
ef43a391 | 550 | if (ordered_hashmap_get(items, sub_path)) { |
582deb84 | 551 | log_debug("Ignoring \"%s\": a separate entry exists.", sub_path); |
3b63d2d3 | 552 | continue; |
582deb84 | 553 | } |
3b63d2d3 | 554 | |
582deb84 ZJS |
555 | if (find_glob(globs, sub_path)) { |
556 | log_debug("Ignoring \"%s\": a separate glob exists.", sub_path); | |
b8bb3e8f | 557 | continue; |
582deb84 | 558 | } |
b8bb3e8f | 559 | |
3b63d2d3 | 560 | if (S_ISDIR(s.st_mode)) { |
52b32b2a | 561 | _cleanup_closedir_ DIR *sub_dir = NULL; |
3b63d2d3 LP |
562 | |
563 | if (mountpoint && | |
564 | streq(dent->d_name, "lost+found") && | |
582deb84 | 565 | s.st_uid == 0) { |
781bc44e | 566 | log_debug("Ignoring directory \"%s\".", sub_path); |
3b63d2d3 | 567 | continue; |
582deb84 | 568 | } |
3b63d2d3 LP |
569 | |
570 | if (maxdepth <= 0) | |
582deb84 | 571 | log_warning("Reached max depth on \"%s\".", sub_path); |
3b63d2d3 | 572 | else { |
3b63d2d3 LP |
573 | int q; |
574 | ||
df99a9ef | 575 | sub_dir = xopendirat_nomod(dirfd(d), dent->d_name); |
cde684a2 | 576 | if (!sub_dir) { |
582deb84 | 577 | if (errno != ENOENT) |
781bc44e | 578 | r = log_warning_errno(errno, "Opening directory \"%s\" failed, ignoring: %m", sub_path); |
3b63d2d3 LP |
579 | |
580 | continue; | |
581 | } | |
582 | ||
52b32b2a LP |
583 | if (flock(dirfd(sub_dir), LOCK_EX|LOCK_NB) < 0) { |
584 | log_debug_errno(errno, "Couldn't acquire shared BSD lock on directory \"%s\", skipping: %m", p); | |
585 | continue; | |
586 | } | |
587 | ||
78a92a5a | 588 | q = dir_cleanup(i, sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1, false); |
3b63d2d3 LP |
589 | if (q < 0) |
590 | r = q; | |
591 | } | |
592 | ||
a23fabc6 LP |
593 | /* Note: if you are wondering why we don't support the sticky bit for excluding |
594 | * directories from cleaning like we do it for other file system objects: well, the | |
595 | * sticky bit already has a meaning for directories, so we don't want to overload | |
596 | * that. */ | |
24f3a374 | 597 | |
582deb84 | 598 | if (keep_this_level) { |
781bc44e | 599 | log_debug("Keeping directory \"%s\".", sub_path); |
24f3a374 | 600 | continue; |
582deb84 | 601 | } |
24f3a374 | 602 | |
3b63d2d3 | 603 | /* Ignore ctime, we change it when deleting */ |
582deb84 ZJS |
604 | age = timespec_load(&s.st_mtim); |
605 | if (age >= cutoff) { | |
606 | char a[FORMAT_TIMESTAMP_MAX]; | |
607 | /* Follows spelling in stat(1). */ | |
608 | log_debug("Directory \"%s\": modify time %s is too new.", | |
609 | sub_path, | |
610 | format_timestamp_us(a, sizeof(a), age)); | |
3b63d2d3 | 611 | continue; |
582deb84 ZJS |
612 | } |
613 | ||
614 | age = timespec_load(&s.st_atim); | |
615 | if (age >= cutoff) { | |
616 | char a[FORMAT_TIMESTAMP_MAX]; | |
617 | log_debug("Directory \"%s\": access time %s is too new.", | |
618 | sub_path, | |
619 | format_timestamp_us(a, sizeof(a), age)); | |
620 | continue; | |
621 | } | |
3b63d2d3 | 622 | |
61253220 ZJS |
623 | log_debug("Removing directory \"%s\".", sub_path); |
624 | if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) | |
920ce828 | 625 | if (!IN_SET(errno, ENOENT, ENOTEMPTY)) |
781bc44e | 626 | r = log_warning_errno(errno, "Failed to remove directory \"%s\", ignoring: %m", sub_path); |
3b63d2d3 LP |
627 | |
628 | } else { | |
a23fabc6 LP |
629 | /* Skip files for which the sticky bit is set. These are semantics we define, and are |
630 | * unknown elsewhere. See XDG_RUNTIME_DIR specification for details. */ | |
582deb84 ZJS |
631 | if (s.st_mode & S_ISVTX) { |
632 | log_debug("Skipping \"%s\": sticky bit set.", sub_path); | |
9c73736d | 633 | continue; |
582deb84 | 634 | } |
9c73736d | 635 | |
20b6bb95 LP |
636 | if (mountpoint && |
637 | S_ISREG(s.st_mode) && | |
638 | s.st_uid == 0 && | |
639 | STR_IN_SET(dent->d_name, | |
640 | ".journal", | |
641 | "aquota.user", | |
642 | "aquota.group")) { | |
643 | log_debug("Skipping \"%s\".", sub_path); | |
644 | continue; | |
645 | } | |
3b63d2d3 | 646 | |
17b90525 | 647 | /* Ignore sockets that are listed in /proc/net/unix */ |
582deb84 ZJS |
648 | if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path)) { |
649 | log_debug("Skipping \"%s\": live socket.", sub_path); | |
17b90525 | 650 | continue; |
582deb84 | 651 | } |
17b90525 | 652 | |
78ab08eb | 653 | /* Ignore device nodes */ |
582deb84 ZJS |
654 | if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) { |
655 | log_debug("Skipping \"%s\": a device.", sub_path); | |
78ab08eb | 656 | continue; |
582deb84 | 657 | } |
78ab08eb | 658 | |
a23fabc6 | 659 | /* Keep files on this level around if this is requested */ |
582deb84 ZJS |
660 | if (keep_this_level) { |
661 | log_debug("Keeping \"%s\".", sub_path); | |
24f3a374 | 662 | continue; |
582deb84 | 663 | } |
24f3a374 | 664 | |
582deb84 ZJS |
665 | age = timespec_load(&s.st_mtim); |
666 | if (age >= cutoff) { | |
667 | char a[FORMAT_TIMESTAMP_MAX]; | |
668 | /* Follows spelling in stat(1). */ | |
669 | log_debug("File \"%s\": modify time %s is too new.", | |
670 | sub_path, | |
671 | format_timestamp_us(a, sizeof(a), age)); | |
3b63d2d3 | 672 | continue; |
582deb84 | 673 | } |
3b63d2d3 | 674 | |
582deb84 ZJS |
675 | age = timespec_load(&s.st_atim); |
676 | if (age >= cutoff) { | |
677 | char a[FORMAT_TIMESTAMP_MAX]; | |
678 | log_debug("File \"%s\": access time %s is too new.", | |
679 | sub_path, | |
680 | format_timestamp_us(a, sizeof(a), age)); | |
681 | continue; | |
682 | } | |
3b63d2d3 | 683 | |
582deb84 ZJS |
684 | age = timespec_load(&s.st_ctim); |
685 | if (age >= cutoff) { | |
686 | char a[FORMAT_TIMESTAMP_MAX]; | |
687 | log_debug("File \"%s\": change time %s is too new.", | |
688 | sub_path, | |
689 | format_timestamp_us(a, sizeof(a), age)); | |
690 | continue; | |
3b63d2d3 LP |
691 | } |
692 | ||
781bc44e | 693 | log_debug("Removing \"%s\".", sub_path); |
582deb84 ZJS |
694 | if (unlinkat(dirfd(d), dent->d_name, 0) < 0) |
695 | if (errno != ENOENT) | |
781bc44e | 696 | r = log_warning_errno(errno, "Failed to remove \"%s\", ignoring: %m", sub_path); |
582deb84 | 697 | |
3b63d2d3 LP |
698 | deleted = true; |
699 | } | |
700 | } | |
701 | ||
702 | finish: | |
703 | if (deleted) { | |
582deb84 | 704 | char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX]; |
76e15a9c | 705 | usec_t age1, age2; |
3b63d2d3 | 706 | |
582deb84 ZJS |
707 | age1 = timespec_load(&ds->st_atim); |
708 | age2 = timespec_load(&ds->st_mtim); | |
76e15a9c | 709 | |
582deb84 ZJS |
710 | log_debug("Restoring access and modification time on \"%s\": %s, %s", |
711 | p, | |
712 | format_timestamp_us(a, sizeof(a), age1), | |
713 | format_timestamp_us(b, sizeof(b), age2)); | |
76e15a9c LP |
714 | |
715 | /* Restore original directory timestamps */ | |
716 | if (futimens(dirfd(d), (struct timespec[]) { | |
717 | ds->st_atim, | |
718 | ds->st_mtim }) < 0) | |
719 | log_warning_errno(errno, "Failed to revert timestamps of '%s', ignoring: %m", p); | |
3b63d2d3 LP |
720 | } |
721 | ||
3b63d2d3 LP |
722 | return r; |
723 | } | |
724 | ||
5579f856 LP |
725 | static bool dangerous_hardlinks(void) { |
726 | _cleanup_free_ char *value = NULL; | |
727 | static int cached = -1; | |
728 | int r; | |
729 | ||
730 | /* Check whether the fs.protected_hardlinks sysctl is on. If we can't determine it we assume its off, as that's | |
731 | * what the upstream default is. */ | |
732 | ||
733 | if (cached >= 0) | |
734 | return cached; | |
735 | ||
736 | r = read_one_line_file("/proc/sys/fs/protected_hardlinks", &value); | |
737 | if (r < 0) { | |
738 | log_debug_errno(r, "Failed to read fs.protected_hardlinks sysctl: %m"); | |
739 | return true; | |
740 | } | |
741 | ||
742 | r = parse_boolean(value); | |
743 | if (r < 0) { | |
744 | log_debug_errno(r, "Failed to parse fs.protected_hardlinks sysctl: %m"); | |
745 | return true; | |
746 | } | |
747 | ||
748 | cached = r == 0; | |
749 | return cached; | |
750 | } | |
751 | ||
774f79b5 | 752 | static bool hardlink_vulnerable(const struct stat *st) { |
5579f856 LP |
753 | assert(st); |
754 | ||
755 | return !S_ISDIR(st->st_mode) && st->st_nlink > 1 && dangerous_hardlinks(); | |
756 | } | |
757 | ||
8b364a38 LP |
758 | static mode_t process_mask_perms(mode_t mode, mode_t current) { |
759 | ||
760 | if ((current & 0111) == 0) | |
761 | mode &= ~0111; | |
762 | if ((current & 0222) == 0) | |
763 | mode &= ~0222; | |
764 | if ((current & 0444) == 0) | |
765 | mode &= ~0444; | |
766 | if (!S_ISDIR(current)) | |
767 | mode &= ~07000; /* remove sticky/sgid/suid bit, unless directory */ | |
768 | ||
769 | return mode; | |
770 | } | |
771 | ||
9d874aec | 772 | static int fd_set_perms(Item *i, int fd, const char *path, const struct stat *st) { |
b206ac8e | 773 | struct stat stbuf; |
a9f55d0e LP |
774 | mode_t new_mode; |
775 | bool do_chown; | |
1924a97d | 776 | |
cde684a2 | 777 | assert(i); |
936f6bdb | 778 | assert(fd); |
4dc7bfdf | 779 | assert(path); |
48b8aaa8 | 780 | |
936f6bdb FB |
781 | if (!i->mode_set && !i->uid_set && !i->gid_set) |
782 | goto shortcut; | |
1924a97d | 783 | |
b206ac8e FB |
784 | if (!st) { |
785 | if (fstat(fd, &stbuf) < 0) | |
786 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
787 | st = &stbuf; | |
788 | } | |
789 | ||
baaa35ad ZJS |
790 | if (hardlink_vulnerable(st)) |
791 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
792 | "Refusing to set permissions on hardlinked file %s while the fs.protected_hardlinks sysctl is turned off.", | |
793 | path); | |
5579f856 | 794 | |
a9f55d0e LP |
795 | /* Do we need a chown()? */ |
796 | do_chown = | |
797 | (i->uid_set && i->uid != st->st_uid) || | |
798 | (i->gid_set && i->gid != st->st_gid); | |
8b364a38 | 799 | |
a9f55d0e LP |
800 | /* Calculate the mode to apply */ |
801 | new_mode = i->mode_set ? (i->mask_perms ? | |
802 | process_mask_perms(i->mode, st->st_mode) : | |
803 | i->mode) : | |
804 | (st->st_mode & 07777); | |
805 | ||
806 | if (i->mode_set && do_chown) { | |
807 | /* Before we issue the chmod() let's reduce the access mode to the common bits of the old and | |
808 | * the new mode. That way there's no time window where the file exists under the old owner | |
809 | * with more than the old access modes — and not under the new owner with more than the new | |
810 | * access modes either. */ | |
8b364a38 | 811 | |
936f6bdb | 812 | if (S_ISLNK(st->st_mode)) |
a9f55d0e | 813 | log_debug("Skipping temporary mode fix for symlink %s.", path); |
51207ca1 | 814 | else { |
a9f55d0e | 815 | mode_t m = new_mode & st->st_mode; /* Mask new mode by old mode */ |
abef3f91 | 816 | |
a9f55d0e LP |
817 | if (((m ^ st->st_mode) & 07777) == 0) |
818 | log_debug("\"%s\" matches temporary mode %o already.", path, m); | |
48b8aaa8 | 819 | else { |
a9f55d0e | 820 | log_debug("Temporarily changing \"%s\" to mode %o.", path, m); |
4dfaa528 FB |
821 | if (fchmod_opath(fd, m) < 0) |
822 | return log_error_errno(errno, "fchmod() of %s failed: %m", path); | |
48b8aaa8 | 823 | } |
062e01bb | 824 | } |
51207ca1 | 825 | } |
062e01bb | 826 | |
a9f55d0e | 827 | if (do_chown) { |
51207ca1 LP |
828 | log_debug("Changing \"%s\" to owner "UID_FMT":"GID_FMT, |
829 | path, | |
830 | i->uid_set ? i->uid : UID_INVALID, | |
831 | i->gid_set ? i->gid : GID_INVALID); | |
832 | ||
936f6bdb FB |
833 | if (fchownat(fd, |
834 | "", | |
835 | i->uid_set ? i->uid : UID_INVALID, | |
836 | i->gid_set ? i->gid : GID_INVALID, | |
837 | AT_EMPTY_PATH) < 0) | |
838 | return log_error_errno(errno, "fchownat() of %s failed: %m", path); | |
582deb84 | 839 | } |
062e01bb | 840 | |
a9f55d0e LP |
841 | /* Now, apply the final mode. We do this in two cases: when the user set a mode explicitly, or after a |
842 | * chown(), since chown()'s mangle the access mode in regards to sgid/suid in some conditions. */ | |
843 | if (i->mode_set || do_chown) { | |
844 | if (S_ISLNK(st->st_mode)) | |
845 | log_debug("Skipping mode fix for symlink %s.", path); | |
846 | else { | |
847 | /* Check if the chmod() is unnecessary. Note that if we did a chown() before we always | |
848 | * chmod() here again, since it might have mangled the bits. */ | |
849 | if (!do_chown && ((new_mode ^ st->st_mode) & 07777) == 0) | |
850 | log_debug("\"%s\" matches mode %o already.", path, new_mode); | |
851 | else { | |
852 | log_debug("Changing \"%s\" to mode %o.", path, new_mode); | |
853 | if (fchmod_opath(fd, new_mode) < 0) | |
854 | return log_error_errno(errno, "fchmod() of %s failed: %m", path); | |
855 | } | |
856 | } | |
857 | } | |
858 | ||
59793c8f | 859 | shortcut: |
08c84981 | 860 | return label_fix(path, 0); |
062e01bb MS |
861 | } |
862 | ||
5ec9d065 FB |
863 | static int path_open_parent_safe(const char *path) { |
864 | _cleanup_free_ char *dn = NULL; | |
a5648b80 | 865 | int r, fd; |
5ec9d065 | 866 | |
baaa35ad ZJS |
867 | if (path_equal(path, "/") || !path_is_normalized(path)) |
868 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
869 | "Failed to open parent of '%s': invalid path.", | |
870 | path); | |
5ec9d065 FB |
871 | |
872 | dn = dirname_malloc(path); | |
873 | if (!dn) | |
874 | return log_oom(); | |
875 | ||
a5648b80 ZJS |
876 | r = chase_symlinks(dn, arg_root, CHASE_SAFE|CHASE_WARN, NULL, &fd); |
877 | if (r < 0 && r != -ENOLINK) | |
878 | return log_error_errno(r, "Failed to validate path %s: %m", path); | |
5ec9d065 | 879 | |
a5648b80 | 880 | return r < 0 ? r : fd; |
5ec9d065 FB |
881 | } |
882 | ||
addc3e30 | 883 | static int path_open_safe(const char *path) { |
a5648b80 | 884 | int r, fd; |
addc3e30 FB |
885 | |
886 | /* path_open_safe() returns a file descriptor opened with O_PATH after | |
887 | * verifying that the path doesn't contain unsafe transitions, except | |
888 | * for its final component as the function does not follow symlink. */ | |
889 | ||
890 | assert(path); | |
891 | ||
baaa35ad ZJS |
892 | if (!path_is_normalized(path)) |
893 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
894 | "Failed to open invalid path '%s'.", | |
895 | path); | |
addc3e30 | 896 | |
a5648b80 ZJS |
897 | r = chase_symlinks(path, arg_root, CHASE_SAFE|CHASE_WARN|CHASE_NOFOLLOW, NULL, &fd); |
898 | if (r < 0 && r != -ENOLINK) | |
899 | return log_error_errno(r, "Failed to validate path %s: %m", path); | |
addc3e30 | 900 | |
a5648b80 | 901 | return r < 0 ? r : fd; |
addc3e30 FB |
902 | } |
903 | ||
936f6bdb FB |
904 | static int path_set_perms(Item *i, const char *path) { |
905 | _cleanup_close_ int fd = -1; | |
936f6bdb FB |
906 | |
907 | assert(i); | |
908 | assert(path); | |
909 | ||
addc3e30 | 910 | fd = path_open_safe(path); |
54946021 | 911 | if (fd < 0) |
addc3e30 | 912 | return fd; |
d460ba18 | 913 | |
9d874aec | 914 | return fd_set_perms(i, fd, path, NULL); |
936f6bdb FB |
915 | } |
916 | ||
bd550f78 | 917 | static int parse_xattrs_from_arg(Item *i) { |
ebf4e801 MW |
918 | const char *p; |
919 | int r; | |
920 | ||
921 | assert(i); | |
505ef0e3 | 922 | assert(i->argument); |
ebf4e801 | 923 | |
ebf4e801 MW |
924 | p = i->argument; |
925 | ||
4034a06d | 926 | for (;;) { |
4cef1923 | 927 | _cleanup_free_ char *name = NULL, *value = NULL, *xattr = NULL; |
4034a06d | 928 | |
4ec85141 | 929 | r = extract_first_word(&p, &xattr, NULL, EXTRACT_UNQUOTE|EXTRACT_CUNESCAPE); |
4034a06d | 930 | if (r < 0) |
bd550f78 | 931 | log_warning_errno(r, "Failed to parse extended attribute '%s', ignoring: %m", p); |
4034a06d LP |
932 | if (r <= 0) |
933 | break; | |
505ef0e3 | 934 | |
4cef1923 | 935 | r = split_pair(xattr, "=", &name, &value); |
ebf4e801 | 936 | if (r < 0) { |
4034a06d | 937 | log_warning_errno(r, "Failed to parse extended attribute, ignoring: %s", xattr); |
ebf4e801 MW |
938 | continue; |
939 | } | |
505ef0e3 | 940 | |
4034a06d | 941 | if (isempty(name) || isempty(value)) { |
bd550f78 | 942 | log_warning("Malformed extended attribute found, ignoring: %s", xattr); |
ebf4e801 MW |
943 | continue; |
944 | } | |
505ef0e3 | 945 | |
4034a06d | 946 | if (strv_push_pair(&i->xattrs, name, value) < 0) |
ebf4e801 | 947 | return log_oom(); |
505ef0e3 | 948 | |
4034a06d | 949 | name = value = NULL; |
ebf4e801 MW |
950 | } |
951 | ||
4034a06d | 952 | return 0; |
ebf4e801 MW |
953 | } |
954 | ||
9d874aec | 955 | static int fd_set_xattrs(Item *i, int fd, const char *path, const struct stat *st) { |
34d26777 | 956 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
ebf4e801 MW |
957 | char **name, **value; |
958 | ||
959 | assert(i); | |
936f6bdb | 960 | assert(fd); |
4dc7bfdf | 961 | assert(path); |
936f6bdb FB |
962 | |
963 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); | |
ebf4e801 | 964 | |
ebf4e801 | 965 | STRV_FOREACH_PAIR(name, value, i->xattrs) { |
bd550f78 | 966 | log_debug("Setting extended attribute '%s=%s' on %s.", *name, *value, path); |
936f6bdb | 967 | if (setxattr(procfs_path, *name, *value, strlen(*value), 0) < 0) |
25f027c5 ZJS |
968 | return log_error_errno(errno, "Setting extended attribute %s=%s on %s failed: %m", |
969 | *name, *value, path); | |
ebf4e801 MW |
970 | } |
971 | return 0; | |
972 | } | |
973 | ||
936f6bdb FB |
974 | static int path_set_xattrs(Item *i, const char *path) { |
975 | _cleanup_close_ int fd = -1; | |
976 | ||
977 | assert(i); | |
978 | assert(path); | |
979 | ||
addc3e30 | 980 | fd = path_open_safe(path); |
936f6bdb | 981 | if (fd < 0) |
addc3e30 | 982 | return fd; |
936f6bdb | 983 | |
9d874aec | 984 | return fd_set_xattrs(i, fd, path, NULL); |
936f6bdb FB |
985 | } |
986 | ||
bd550f78 | 987 | static int parse_acls_from_arg(Item *item) { |
349cc4a5 | 988 | #if HAVE_ACL |
f8eeeaf9 | 989 | int r; |
f8eeeaf9 ZJS |
990 | |
991 | assert(item); | |
992 | ||
c55ac248 | 993 | /* If append_or_force (= modify) is set, we will not modify the acl |
50d9e46d | 994 | * afterwards, so the mask can be added now if necessary. */ |
bd550f78 | 995 | |
c55ac248 | 996 | r = parse_acl(item->argument, &item->acl_access, &item->acl_default, !item->append_or_force); |
f8eeeaf9 | 997 | if (r < 0) |
4034a06d | 998 | log_warning_errno(r, "Failed to parse ACL \"%s\": %m. Ignoring", item->argument); |
f8eeeaf9 | 999 | #else |
886cf317 | 1000 | log_warning_errno(SYNTHETIC_ERRNO(ENOSYS), "ACLs are not supported. Ignoring"); |
f8eeeaf9 ZJS |
1001 | #endif |
1002 | ||
1003 | return 0; | |
1004 | } | |
1005 | ||
349cc4a5 | 1006 | #if HAVE_ACL |
48b8aaa8 LP |
1007 | static int path_set_acl(const char *path, const char *pretty, acl_type_t type, acl_t acl, bool modify) { |
1008 | _cleanup_(acl_free_charpp) char *t = NULL; | |
dd4105b0 | 1009 | _cleanup_(acl_freep) acl_t dup = NULL; |
50d9e46d ZJS |
1010 | int r; |
1011 | ||
d873e877 HPD |
1012 | /* Returns 0 for success, positive error if already warned, |
1013 | * negative error otherwise. */ | |
1014 | ||
50d9e46d | 1015 | if (modify) { |
dd4105b0 | 1016 | r = acls_for_file(path, type, acl, &dup); |
50d9e46d ZJS |
1017 | if (r < 0) |
1018 | return r; | |
50d9e46d | 1019 | |
dd4105b0 ZJS |
1020 | r = calc_acl_mask_if_needed(&dup); |
1021 | if (r < 0) | |
1022 | return r; | |
1023 | } else { | |
1024 | dup = acl_dup(acl); | |
1025 | if (!dup) | |
1026 | return -errno; | |
1027 | ||
1028 | /* the mask was already added earlier if needed */ | |
1029 | } | |
1030 | ||
1031 | r = add_base_acls_if_needed(&dup, path); | |
1032 | if (r < 0) | |
1033 | return r; | |
1034 | ||
582deb84 | 1035 | t = acl_to_any_text(dup, NULL, ',', TEXT_ABBREVIATE); |
48b8aaa8 | 1036 | log_debug("Setting %s ACL %s on %s.", |
582deb84 | 1037 | type == ACL_TYPE_ACCESS ? "access" : "default", |
48b8aaa8 | 1038 | strna(t), pretty); |
50d9e46d | 1039 | |
582deb84 ZJS |
1040 | r = acl_set_file(path, type, dup); |
1041 | if (r < 0) | |
3ea40b78 LP |
1042 | /* Return positive to indicate we already warned */ |
1043 | return -log_error_errno(errno, | |
1044 | "Setting %s ACL \"%s\" on %s failed: %m", | |
1045 | type == ACL_TYPE_ACCESS ? "access" : "default", | |
48b8aaa8 | 1046 | strna(t), pretty); |
d873e877 | 1047 | |
582deb84 | 1048 | return 0; |
50d9e46d | 1049 | } |
35888b67 | 1050 | #endif |
50d9e46d | 1051 | |
9d874aec | 1052 | static int fd_set_acls(Item *item, int fd, const char *path, const struct stat *st) { |
d873e877 | 1053 | int r = 0; |
349cc4a5 | 1054 | #if HAVE_ACL |
34d26777 | 1055 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
b206ac8e | 1056 | struct stat stbuf; |
48b8aaa8 | 1057 | |
f8eeeaf9 | 1058 | assert(item); |
936f6bdb | 1059 | assert(fd); |
4dc7bfdf | 1060 | assert(path); |
48b8aaa8 | 1061 | |
b206ac8e FB |
1062 | if (!st) { |
1063 | if (fstat(fd, &stbuf) < 0) | |
1064 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
1065 | st = &stbuf; | |
1066 | } | |
1067 | ||
baaa35ad ZJS |
1068 | if (hardlink_vulnerable(st)) |
1069 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
1070 | "Refusing to set ACLs on hardlinked file %s while the fs.protected_hardlinks sysctl is turned off.", | |
1071 | path); | |
5579f856 | 1072 | |
936f6bdb | 1073 | if (S_ISLNK(st->st_mode)) { |
48b8aaa8 LP |
1074 | log_debug("Skipping ACL fix for symlink %s.", path); |
1075 | return 0; | |
1076 | } | |
1077 | ||
936f6bdb | 1078 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); |
48b8aaa8 | 1079 | |
d873e877 | 1080 | if (item->acl_access) |
c55ac248 | 1081 | r = path_set_acl(procfs_path, path, ACL_TYPE_ACCESS, item->acl_access, item->append_or_force); |
f8eeeaf9 | 1082 | |
2667385b RM |
1083 | /* set only default acls to folders */ |
1084 | if (r == 0 && item->acl_default && S_ISDIR(st->st_mode)) | |
c55ac248 | 1085 | r = path_set_acl(procfs_path, path, ACL_TYPE_DEFAULT, item->acl_default, item->append_or_force); |
f8eeeaf9 | 1086 | |
d873e877 HPD |
1087 | if (r > 0) |
1088 | return -r; /* already warned */ | |
f8606626 LP |
1089 | |
1090 | /* The above procfs paths don't work if /proc is not mounted. */ | |
1091 | if (r == -ENOENT && proc_mounted() == 0) | |
1092 | r = -ENOSYS; | |
1093 | ||
936f6bdb | 1094 | if (r == -EOPNOTSUPP) { |
d873e877 HPD |
1095 | log_debug_errno(r, "ACLs not supported by file system at %s", path); |
1096 | return 0; | |
936f6bdb FB |
1097 | } |
1098 | if (r < 0) | |
1099 | return log_error_errno(r, "ACL operation on \"%s\" failed: %m", path); | |
d873e877 HPD |
1100 | #endif |
1101 | return r; | |
f8eeeaf9 ZJS |
1102 | } |
1103 | ||
936f6bdb FB |
1104 | static int path_set_acls(Item *item, const char *path) { |
1105 | int r = 0; | |
545cdb90 | 1106 | #if HAVE_ACL |
936f6bdb | 1107 | _cleanup_close_ int fd = -1; |
936f6bdb FB |
1108 | |
1109 | assert(item); | |
1110 | assert(path); | |
1111 | ||
addc3e30 | 1112 | fd = path_open_safe(path); |
936f6bdb | 1113 | if (fd < 0) |
addc3e30 | 1114 | return fd; |
936f6bdb | 1115 | |
9d874aec | 1116 | r = fd_set_acls(item, fd, path, NULL); |
545cdb90 YW |
1117 | #endif |
1118 | return r; | |
1119 | } | |
936f6bdb | 1120 | |
bd550f78 | 1121 | static int parse_attribute_from_arg(Item *item) { |
88ec4dfa LP |
1122 | |
1123 | static const struct { | |
1124 | char character; | |
1125 | unsigned value; | |
1126 | } attributes[] = { | |
1127 | { 'A', FS_NOATIME_FL }, /* do not update atime */ | |
1128 | { 'S', FS_SYNC_FL }, /* Synchronous updates */ | |
1129 | { 'D', FS_DIRSYNC_FL }, /* dirsync behaviour (directories only) */ | |
1130 | { 'a', FS_APPEND_FL }, /* writes to file may only append */ | |
1131 | { 'c', FS_COMPR_FL }, /* Compress file */ | |
1132 | { 'd', FS_NODUMP_FL }, /* do not dump file */ | |
8c35b2ca | 1133 | { 'e', FS_EXTENT_FL }, /* Extents */ |
88ec4dfa LP |
1134 | { 'i', FS_IMMUTABLE_FL }, /* Immutable file */ |
1135 | { 'j', FS_JOURNAL_DATA_FL }, /* Reserved for ext3 */ | |
1136 | { 's', FS_SECRM_FL }, /* Secure deletion */ | |
1137 | { 'u', FS_UNRM_FL }, /* Undelete */ | |
1138 | { 't', FS_NOTAIL_FL }, /* file tail should not be merged */ | |
13e785f7 | 1139 | { 'T', FS_TOPDIR_FL }, /* Top of directory hierarchies */ |
88ec4dfa | 1140 | { 'C', FS_NOCOW_FL }, /* Do not cow file */ |
75006470 | 1141 | { 'P', FS_PROJINHERIT_FL }, /* Inherit the quota project ID */ |
22c3a6ca | 1142 | }; |
88ec4dfa | 1143 | |
22c3a6ca GB |
1144 | enum { |
1145 | MODE_ADD, | |
1146 | MODE_DEL, | |
1147 | MODE_SET | |
1148 | } mode = MODE_ADD; | |
22c3a6ca | 1149 | |
88ec4dfa LP |
1150 | unsigned value = 0, mask = 0; |
1151 | const char *p; | |
22c3a6ca | 1152 | |
88ec4dfa LP |
1153 | assert(item); |
1154 | ||
1155 | p = item->argument; | |
1156 | if (p) { | |
1157 | if (*p == '+') { | |
1158 | mode = MODE_ADD; | |
1159 | p++; | |
1160 | } else if (*p == '-') { | |
1161 | mode = MODE_DEL; | |
1162 | p++; | |
1163 | } else if (*p == '=') { | |
1164 | mode = MODE_SET; | |
1165 | p++; | |
1166 | } | |
22c3a6ca GB |
1167 | } |
1168 | ||
baaa35ad ZJS |
1169 | if (isempty(p) && mode != MODE_SET) |
1170 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1171 | "Setting file attribute on '%s' needs an attribute specification.", | |
1172 | item->path); | |
88ec4dfa LP |
1173 | |
1174 | for (; p && *p ; p++) { | |
1175 | unsigned i, v; | |
1176 | ||
1177 | for (i = 0; i < ELEMENTSOF(attributes); i++) | |
1178 | if (*p == attributes[i].character) | |
1179 | break; | |
1180 | ||
baaa35ad ZJS |
1181 | if (i >= ELEMENTSOF(attributes)) |
1182 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1183 | "Unknown file attribute '%c' on '%s'.", | |
1184 | *p, item->path); | |
88ec4dfa LP |
1185 | |
1186 | v = attributes[i].value; | |
1187 | ||
3742095b | 1188 | SET_FLAG(value, v, IN_SET(mode, MODE_ADD, MODE_SET)); |
88ec4dfa LP |
1189 | |
1190 | mask |= v; | |
22c3a6ca GB |
1191 | } |
1192 | ||
1193 | if (mode == MODE_SET) | |
d629ba70 | 1194 | mask |= CHATTR_ALL_FL; |
22c3a6ca | 1195 | |
88ec4dfa | 1196 | assert(mask != 0); |
22c3a6ca | 1197 | |
88ec4dfa LP |
1198 | item->attribute_mask = mask; |
1199 | item->attribute_value = value; | |
1200 | item->attribute_set = true; | |
22c3a6ca GB |
1201 | |
1202 | return 0; | |
22c3a6ca GB |
1203 | } |
1204 | ||
9d874aec | 1205 | static int fd_set_attribute(Item *item, int fd, const char *path, const struct stat *st) { |
936f6bdb | 1206 | _cleanup_close_ int procfs_fd = -1; |
b206ac8e | 1207 | struct stat stbuf; |
88ec4dfa LP |
1208 | unsigned f; |
1209 | int r; | |
22c3a6ca | 1210 | |
4dc7bfdf FB |
1211 | assert(item); |
1212 | assert(fd); | |
1213 | assert(path); | |
1214 | ||
88ec4dfa | 1215 | if (!item->attribute_set || item->attribute_mask == 0) |
22c3a6ca | 1216 | return 0; |
22c3a6ca | 1217 | |
b206ac8e FB |
1218 | if (!st) { |
1219 | if (fstat(fd, &stbuf) < 0) | |
1220 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
1221 | st = &stbuf; | |
1222 | } | |
1223 | ||
88ec4dfa LP |
1224 | /* Issuing the file attribute ioctls on device nodes is not |
1225 | * safe, as that will be delivered to the drivers, not the | |
1226 | * file system containing the device node. */ | |
baaa35ad ZJS |
1227 | if (!S_ISREG(st->st_mode) && !S_ISDIR(st->st_mode)) |
1228 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1229 | "Setting file flags is only supported on regular files and directories, cannot set on '%s'.", | |
1230 | path); | |
88ec4dfa LP |
1231 | |
1232 | f = item->attribute_value & item->attribute_mask; | |
1233 | ||
1234 | /* Mask away directory-specific flags */ | |
936f6bdb | 1235 | if (!S_ISDIR(st->st_mode)) |
22c3a6ca | 1236 | f &= ~FS_DIRSYNC_FL; |
88ec4dfa | 1237 | |
f2324783 | 1238 | procfs_fd = fd_reopen(fd, O_RDONLY|O_CLOEXEC|O_NOATIME); |
936f6bdb | 1239 | if (procfs_fd < 0) |
c3e03778 | 1240 | return log_error_errno(procfs_fd, "Failed to re-open '%s': %m", path); |
936f6bdb | 1241 | |
db9a4254 | 1242 | r = chattr_fd(procfs_fd, f, item->attribute_mask, NULL); |
22c3a6ca | 1243 | if (r < 0) |
4c701096 | 1244 | log_full_errno(IN_SET(r, -ENOTTY, -EOPNOTSUPP) ? LOG_DEBUG : LOG_WARNING, |
ad75a97f | 1245 | r, |
15b45fac | 1246 | "Cannot set file attribute for '%s', value=0x%08x, mask=0x%08x, ignoring: %m", |
ad75a97f | 1247 | path, item->attribute_value, item->attribute_mask); |
22c3a6ca GB |
1248 | |
1249 | return 0; | |
1250 | } | |
1251 | ||
936f6bdb FB |
1252 | static int path_set_attribute(Item *item, const char *path) { |
1253 | _cleanup_close_ int fd = -1; | |
936f6bdb FB |
1254 | |
1255 | if (!item->attribute_set || item->attribute_mask == 0) | |
1256 | return 0; | |
1257 | ||
addc3e30 | 1258 | fd = path_open_safe(path); |
936f6bdb | 1259 | if (fd < 0) |
addc3e30 | 1260 | return fd; |
936f6bdb | 1261 | |
9d874aec | 1262 | return fd_set_attribute(item, fd, path, NULL); |
936f6bdb FB |
1263 | } |
1264 | ||
d4e9eb91 | 1265 | static int write_one_file(Item *i, const char *path) { |
551470ec FB |
1266 | _cleanup_close_ int fd = -1, dir_fd = -1; |
1267 | char *bn; | |
1baaf8aa | 1268 | int r; |
31c84ff1 FB |
1269 | |
1270 | assert(i); | |
1271 | assert(path); | |
1272 | assert(i->argument); | |
1273 | assert(i->type == WRITE_FILE); | |
1274 | ||
551470ec FB |
1275 | /* Validate the path and keep the fd on the directory for opening the |
1276 | * file so we're sure that it can't be changed behind our back. */ | |
1277 | dir_fd = path_open_parent_safe(path); | |
1278 | if (dir_fd < 0) | |
1279 | return dir_fd; | |
1280 | ||
1281 | bn = basename(path); | |
1282 | ||
31c84ff1 | 1283 | /* Follows symlinks */ |
1baaf8aa LP |
1284 | fd = openat(dir_fd, bn, |
1285 | O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY|(i->append_or_force ? O_APPEND : 0), | |
1286 | i->mode); | |
31c84ff1 FB |
1287 | if (fd < 0) { |
1288 | if (errno == ENOENT) { | |
1289 | log_debug_errno(errno, "Not writing missing file \"%s\": %m", path); | |
1290 | return 0; | |
1291 | } | |
1baaf8aa LP |
1292 | |
1293 | if (i->allow_failure) | |
1294 | return log_debug_errno(errno, "Failed to open file \"%s\", ignoring: %m", path); | |
1295 | ||
31c84ff1 FB |
1296 | return log_error_errno(errno, "Failed to open file \"%s\": %m", path); |
1297 | } | |
1298 | ||
1299 | /* 'w' is allowed to write into any kind of files. */ | |
1300 | log_debug("Writing to \"%s\".", path); | |
1301 | ||
1302 | r = loop_write(fd, i->argument, strlen(i->argument), false); | |
1303 | if (r < 0) | |
1304 | return log_error_errno(r, "Failed to write file \"%s\": %m", path); | |
1305 | ||
9d874aec | 1306 | return fd_set_perms(i, fd, path, NULL); |
31c84ff1 FB |
1307 | } |
1308 | ||
1309 | static int create_file(Item *i, const char *path) { | |
5ec9d065 FB |
1310 | _cleanup_close_ int fd = -1, dir_fd = -1; |
1311 | struct stat stbuf, *st = NULL; | |
1312 | int r = 0; | |
1313 | char *bn; | |
d4e9eb91 | 1314 | |
874f1947 LP |
1315 | assert(i); |
1316 | assert(path); | |
5ec9d065 FB |
1317 | assert(i->type == CREATE_FILE); |
1318 | ||
1319 | /* 'f' operates on regular files exclusively. */ | |
1320 | ||
1321 | /* Validate the path and keep the fd on the directory for opening the | |
1322 | * file so we're sure that it can't be changed behind our back. */ | |
1323 | dir_fd = path_open_parent_safe(path); | |
1324 | if (dir_fd < 0) | |
1325 | return dir_fd; | |
874f1947 | 1326 | |
5ec9d065 | 1327 | bn = basename(path); |
d4e9eb91 | 1328 | |
43ad6e31 | 1329 | RUN_WITH_UMASK(0000) { |
ecabcf8b | 1330 | mac_selinux_create_file_prepare(path, S_IFREG); |
5ec9d065 | 1331 | fd = openat(dir_fd, bn, O_CREAT|O_EXCL|O_NOFOLLOW|O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode); |
ecabcf8b | 1332 | mac_selinux_create_file_clear(); |
5c0d398d | 1333 | } |
d4e9eb91 DR |
1334 | |
1335 | if (fd < 0) { | |
5ec9d065 FB |
1336 | /* Even on a read-only filesystem, open(2) returns EEXIST if the |
1337 | * file already exists. It returns EROFS only if it needs to | |
1338 | * create the file. */ | |
1339 | if (errno != EEXIST) | |
1340 | return log_error_errno(errno, "Failed to create file %s: %m", path); | |
1341 | ||
1342 | /* Re-open the file. At that point it must exist since open(2) | |
1343 | * failed with EEXIST. We still need to check if the perms/mode | |
1344 | * need to be changed. For read-only filesystems, we let | |
1345 | * fd_set_perms() report the error if the perms need to be | |
1346 | * modified. */ | |
1347 | fd = openat(dir_fd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH, i->mode); | |
1348 | if (fd < 0) | |
1349 | return log_error_errno(errno, "Failed to re-open file %s: %m", path); | |
1350 | ||
1351 | if (fstat(fd, &stbuf) < 0) | |
1352 | return log_error_errno(errno, "stat(%s) failed: %m", path); | |
1353 | ||
1354 | if (!S_ISREG(stbuf.st_mode)) { | |
1355 | log_error("%s exists and is not a regular file.", path); | |
1356 | return -EEXIST; | |
49e87292 | 1357 | } |
d4e9eb91 | 1358 | |
5ec9d065 FB |
1359 | st = &stbuf; |
1360 | } else { | |
1361 | ||
1362 | log_debug("\"%s\" has been created.", path); | |
1363 | ||
1364 | if (i->argument) { | |
1365 | log_debug("Writing to \"%s\".", path); | |
f44b28fd | 1366 | |
5ec9d065 FB |
1367 | r = loop_write(fd, i->argument, strlen(i->argument), false); |
1368 | if (r < 0) | |
1369 | return log_error_errno(r, "Failed to write file \"%s\": %m", path); | |
1370 | } | |
d4e9eb91 DR |
1371 | } |
1372 | ||
9d874aec | 1373 | return fd_set_perms(i, fd, path, st); |
5ec9d065 | 1374 | } |
d4e9eb91 | 1375 | |
5ec9d065 | 1376 | static int truncate_file(Item *i, const char *path) { |
14ab804e | 1377 | _cleanup_close_ int fd = -1, dir_fd = -1; |
5ec9d065 FB |
1378 | struct stat stbuf, *st = NULL; |
1379 | bool erofs = false; | |
1380 | int r = 0; | |
14ab804e | 1381 | char *bn; |
5ec9d065 FB |
1382 | |
1383 | assert(i); | |
1384 | assert(path); | |
eccebf4b | 1385 | assert(i->type == TRUNCATE_FILE || (i->type == CREATE_FILE && i->append_or_force)); |
d4e9eb91 | 1386 | |
5ec9d065 FB |
1387 | /* We want to operate on regular file exclusively especially since |
1388 | * O_TRUNC is unspecified if the file is neither a regular file nor a | |
1389 | * fifo nor a terminal device. Therefore we first open the file and make | |
1390 | * sure it's a regular one before truncating it. */ | |
3612fbc1 | 1391 | |
14ab804e FB |
1392 | /* Validate the path and keep the fd on the directory for opening the |
1393 | * file so we're sure that it can't be changed behind our back. */ | |
1394 | dir_fd = path_open_parent_safe(path); | |
1395 | if (dir_fd < 0) | |
1396 | return dir_fd; | |
1397 | ||
1398 | bn = basename(path); | |
1399 | ||
5ec9d065 FB |
1400 | RUN_WITH_UMASK(0000) { |
1401 | mac_selinux_create_file_prepare(path, S_IFREG); | |
14ab804e | 1402 | fd = openat(dir_fd, bn, O_CREAT|O_NOFOLLOW|O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode); |
5ec9d065 FB |
1403 | mac_selinux_create_file_clear(); |
1404 | } | |
1405 | ||
1406 | if (fd < 0) { | |
1407 | if (errno != EROFS) | |
1408 | return log_error_errno(errno, "Failed to open/create file %s: %m", path); | |
1409 | ||
1410 | /* On a read-only filesystem, we don't want to fail if the | |
1411 | * target is already empty and the perms are set. So we still | |
1412 | * proceed with the sanity checks and let the remaining | |
1413 | * operations fail with EROFS if they try to modify the target | |
1414 | * file. */ | |
1415 | ||
14ab804e | 1416 | fd = openat(dir_fd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH, i->mode); |
5ec9d065 FB |
1417 | if (fd < 0) { |
1418 | if (errno == ENOENT) { | |
1419 | log_error("Cannot create file %s on a read-only file system.", path); | |
1420 | return -EROFS; | |
1421 | } | |
1422 | ||
1423 | return log_error_errno(errno, "Failed to re-open file %s: %m", path); | |
1424 | } | |
1425 | ||
1426 | erofs = true; | |
1427 | } | |
1428 | ||
1429 | if (fstat(fd, &stbuf) < 0) | |
4a62c710 | 1430 | return log_error_errno(errno, "stat(%s) failed: %m", path); |
d4e9eb91 | 1431 | |
5ec9d065 FB |
1432 | if (!S_ISREG(stbuf.st_mode)) { |
1433 | log_error("%s exists and is not a regular file.", path); | |
d4e9eb91 DR |
1434 | return -EEXIST; |
1435 | } | |
1436 | ||
5ec9d065 FB |
1437 | if (stbuf.st_size > 0) { |
1438 | if (ftruncate(fd, 0) < 0) { | |
1439 | r = erofs ? -EROFS : -errno; | |
1440 | return log_error_errno(r, "Failed to truncate file %s: %m", path); | |
1441 | } | |
1442 | } else | |
1443 | st = &stbuf; | |
d4e9eb91 | 1444 | |
5ec9d065 FB |
1445 | log_debug("\"%s\" has been created.", path); |
1446 | ||
1447 | if (i->argument) { | |
1448 | log_debug("Writing to \"%s\".", path); | |
1449 | ||
1450 | r = loop_write(fd, i->argument, strlen(i->argument), false); | |
1451 | if (r < 0) { | |
1452 | r = erofs ? -EROFS : r; | |
1453 | return log_error_errno(r, "Failed to write file %s: %m", path); | |
1454 | } | |
1455 | } | |
1456 | ||
9d874aec | 1457 | return fd_set_perms(i, fd, path, st); |
d4e9eb91 DR |
1458 | } |
1459 | ||
b1f7b17f | 1460 | static int copy_files(Item *i) { |
16ba55ad FB |
1461 | _cleanup_close_ int dfd = -1, fd = -1; |
1462 | char *bn; | |
b1f7b17f FB |
1463 | int r; |
1464 | ||
1465 | log_debug("Copying tree \"%s\" to \"%s\".", i->argument, i->path); | |
1466 | ||
16ba55ad | 1467 | bn = basename(i->path); |
b1f7b17f | 1468 | |
16ba55ad FB |
1469 | /* Validate the path and use the returned directory fd for copying the |
1470 | * target so we're sure that the path can't be changed behind our | |
1471 | * back. */ | |
1472 | dfd = path_open_parent_safe(i->path); | |
1473 | if (dfd < 0) | |
1474 | return dfd; | |
b1f7b17f | 1475 | |
16ba55ad FB |
1476 | r = copy_tree_at(AT_FDCWD, i->argument, |
1477 | dfd, bn, | |
1478 | i->uid_set ? i->uid : UID_INVALID, | |
1479 | i->gid_set ? i->gid : GID_INVALID, | |
80e7c840 | 1480 | COPY_REFLINK | COPY_MERGE_EMPTY | COPY_MAC_CREATE); |
b1f7b17f FB |
1481 | if (r < 0) { |
1482 | struct stat a, b; | |
1483 | ||
16ba55ad FB |
1484 | /* If the target already exists on read-only filesystems, trying |
1485 | * to create the target will not fail with EEXIST but with | |
1486 | * EROFS. */ | |
1487 | if (r == -EROFS && faccessat(dfd, bn, F_OK, AT_SYMLINK_NOFOLLOW) == 0) | |
1488 | r = -EEXIST; | |
1489 | ||
b1f7b17f FB |
1490 | if (r != -EEXIST) |
1491 | return log_error_errno(r, "Failed to copy files to %s: %m", i->path); | |
1492 | ||
1493 | if (stat(i->argument, &a) < 0) | |
1494 | return log_error_errno(errno, "stat(%s) failed: %m", i->argument); | |
1495 | ||
16ba55ad | 1496 | if (fstatat(dfd, bn, &b, AT_SYMLINK_NOFOLLOW) < 0) |
b1f7b17f FB |
1497 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); |
1498 | ||
1499 | if ((a.st_mode ^ b.st_mode) & S_IFMT) { | |
1500 | log_debug("Can't copy to %s, file exists already and is of different type", i->path); | |
1501 | return 0; | |
1502 | } | |
1503 | } | |
1504 | ||
16ba55ad FB |
1505 | fd = openat(dfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1506 | if (fd < 0) | |
1507 | return log_error_errno(errno, "Failed to openat(%s): %m", i->path); | |
1508 | ||
9d874aec | 1509 | return fd_set_perms(i, fd, i->path, NULL); |
b1f7b17f FB |
1510 | } |
1511 | ||
074bd73f FB |
1512 | typedef enum { |
1513 | CREATION_NORMAL, | |
1514 | CREATION_EXISTING, | |
1515 | CREATION_FORCE, | |
1516 | _CREATION_MODE_MAX, | |
1517 | _CREATION_MODE_INVALID = -1 | |
1518 | } CreationMode; | |
1519 | ||
b82f71c7 | 1520 | static const char *const creation_mode_verb_table[_CREATION_MODE_MAX] = { |
074bd73f FB |
1521 | [CREATION_NORMAL] = "Created", |
1522 | [CREATION_EXISTING] = "Found existing", | |
1523 | [CREATION_FORCE] = "Created replacement", | |
1524 | }; | |
1525 | ||
1526 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb, CreationMode); | |
1527 | ||
f17a8d61 | 1528 | static int create_directory_or_subvolume(const char *path, mode_t mode, bool subvol, CreationMode *creation) { |
4c39d899 | 1529 | _cleanup_close_ int pfd = -1; |
f17a8d61 | 1530 | CreationMode c; |
4c39d899 | 1531 | int r; |
4ad36844 | 1532 | |
4c39d899 | 1533 | assert(path); |
4ad36844 | 1534 | |
f17a8d61 FB |
1535 | if (!creation) |
1536 | creation = &c; | |
1537 | ||
4c39d899 FB |
1538 | pfd = path_open_parent_safe(path); |
1539 | if (pfd < 0) | |
1540 | return pfd; | |
4ad36844 | 1541 | |
4c39d899 | 1542 | if (subvol) { |
4ad36844 FB |
1543 | if (btrfs_is_subvol(empty_to_root(arg_root)) <= 0) |
1544 | ||
1545 | /* Don't create a subvolume unless the root directory is | |
1546 | * one, too. We do this under the assumption that if the | |
1547 | * root directory is just a plain directory (i.e. very | |
1548 | * light-weight), we shouldn't try to split it up into | |
1549 | * subvolumes (i.e. more heavy-weight). Thus, chroot() | |
1550 | * environments and suchlike will get a full brtfs | |
1551 | * subvolume set up below their tree only if they | |
1552 | * specifically set up a btrfs subvolume for the root | |
1553 | * dir too. */ | |
1554 | ||
4c39d899 | 1555 | subvol = false; |
4ad36844 | 1556 | else { |
4c39d899 FB |
1557 | RUN_WITH_UMASK((~mode) & 0777) |
1558 | r = btrfs_subvol_make_fd(pfd, basename(path)); | |
4ad36844 FB |
1559 | } |
1560 | } else | |
1561 | r = 0; | |
1562 | ||
4c39d899 | 1563 | if (!subvol || r == -ENOTTY) |
4ad36844 | 1564 | RUN_WITH_UMASK(0000) |
4c39d899 | 1565 | r = mkdirat_label(pfd, basename(path), mode); |
4ad36844 FB |
1566 | |
1567 | if (r < 0) { | |
1568 | int k; | |
1569 | ||
1570 | if (!IN_SET(r, -EEXIST, -EROFS)) | |
4c39d899 | 1571 | return log_error_errno(r, "Failed to create directory or subvolume \"%s\": %m", path); |
4ad36844 | 1572 | |
4c39d899 | 1573 | k = is_dir_fd(pfd); |
4ad36844 | 1574 | if (k == -ENOENT && r == -EROFS) |
4c39d899 | 1575 | return log_error_errno(r, "%s does not exist and cannot be created as the file system is read-only.", path); |
4ad36844 | 1576 | if (k < 0) |
4c39d899 | 1577 | return log_error_errno(k, "Failed to check if %s exists: %m", path); |
4ad36844 | 1578 | if (!k) { |
4c39d899 FB |
1579 | log_warning("\"%s\" already exists and is not a directory.", path); |
1580 | return -EEXIST; | |
4ad36844 FB |
1581 | } |
1582 | ||
f17a8d61 | 1583 | *creation = CREATION_EXISTING; |
4ad36844 | 1584 | } else |
f17a8d61 | 1585 | *creation = CREATION_NORMAL; |
4ad36844 | 1586 | |
f17a8d61 | 1587 | log_debug("%s directory \"%s\".", creation_mode_verb_to_string(*creation), path); |
4c39d899 FB |
1588 | |
1589 | r = openat(pfd, basename(path), O_NOCTTY|O_CLOEXEC|O_DIRECTORY); | |
1590 | if (r < 0) | |
09f12798 LP |
1591 | return log_error_errno(errno, "Failed to open directory '%s': %m", basename(path)); |
1592 | ||
4c39d899 FB |
1593 | return r; |
1594 | } | |
1595 | ||
1596 | static int create_directory(Item *i, const char *path) { | |
1597 | _cleanup_close_ int fd = -1; | |
1598 | ||
1599 | assert(i); | |
1600 | assert(IN_SET(i->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY)); | |
1601 | ||
f17a8d61 | 1602 | fd = create_directory_or_subvolume(path, i->mode, false, NULL); |
4c39d899 FB |
1603 | if (fd == -EEXIST) |
1604 | return 0; | |
1605 | if (fd < 0) | |
1606 | return fd; | |
1607 | ||
9d874aec | 1608 | return fd_set_perms(i, fd, path, NULL); |
4c39d899 FB |
1609 | } |
1610 | ||
1611 | static int create_subvolume(Item *i, const char *path) { | |
1612 | _cleanup_close_ int fd = -1; | |
f17a8d61 | 1613 | CreationMode creation; |
4c39d899 FB |
1614 | int r, q = 0; |
1615 | ||
1616 | assert(i); | |
1617 | assert(IN_SET(i->type, CREATE_SUBVOLUME, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)); | |
1618 | ||
f17a8d61 | 1619 | fd = create_directory_or_subvolume(path, i->mode, true, &creation); |
4c39d899 FB |
1620 | if (fd == -EEXIST) |
1621 | return 0; | |
1622 | if (fd < 0) | |
1623 | return fd; | |
4ad36844 | 1624 | |
f17a8d61 FB |
1625 | if (creation == CREATION_NORMAL && |
1626 | IN_SET(i->type, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)) { | |
4c39d899 | 1627 | r = btrfs_subvol_auto_qgroup_fd(fd, 0, i->type == CREATE_SUBVOLUME_NEW_QUOTA); |
4ad36844 FB |
1628 | if (r == -ENOTTY) |
1629 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (unsupported fs or dir not a subvolume): %m", i->path); | |
1630 | else if (r == -EROFS) | |
1631 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (fs is read-only).", i->path); | |
4b019d2f | 1632 | else if (r == -ENOTCONN) |
4ad36844 FB |
1633 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (quota support is disabled).", i->path); |
1634 | else if (r < 0) | |
1635 | q = log_error_errno(r, "Failed to adjust quota for subvolume \"%s\": %m", i->path); | |
1636 | else if (r > 0) | |
1637 | log_debug("Adjusted quota for subvolume \"%s\".", i->path); | |
1638 | else if (r == 0) | |
1639 | log_debug("Quota for subvolume \"%s\" already in place, no change made.", i->path); | |
1640 | } | |
1641 | ||
9d874aec LP |
1642 | r = fd_set_perms(i, fd, path, NULL); |
1643 | if (q < 0) /* prefer the quota change error from above */ | |
4ad36844 FB |
1644 | return q; |
1645 | ||
1646 | return r; | |
1647 | } | |
1648 | ||
54946021 FB |
1649 | static int empty_directory(Item *i, const char *path) { |
1650 | int r; | |
1651 | ||
1652 | assert(i); | |
1653 | assert(i->type == EMPTY_DIRECTORY); | |
1654 | ||
1655 | r = is_dir(path, false); | |
1656 | if (r == -ENOENT) { | |
1657 | /* Option "e" operates only on existing objects. Do not | |
1658 | * print errors about non-existent files or directories */ | |
1659 | log_debug("Skipping missing directory: %s", path); | |
1660 | return 0; | |
1661 | } | |
1662 | if (r < 0) | |
1663 | return log_error_errno(r, "is_dir() failed on path %s: %m", path); | |
baaa35ad ZJS |
1664 | if (r == 0) |
1665 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
1666 | "'%s' already exists and is not a directory.", | |
1667 | path); | |
54946021 FB |
1668 | |
1669 | return path_set_perms(i, path); | |
1670 | } | |
1671 | ||
074bd73f | 1672 | static int create_device(Item *i, mode_t file_type) { |
c7700a77 | 1673 | _cleanup_close_ int dfd = -1, fd = -1; |
074bd73f | 1674 | CreationMode creation; |
c7700a77 | 1675 | char *bn; |
074bd73f FB |
1676 | int r; |
1677 | ||
1678 | assert(i); | |
1679 | assert(IN_SET(file_type, S_IFBLK, S_IFCHR)); | |
1680 | ||
c7700a77 FB |
1681 | bn = basename(i->path); |
1682 | ||
1683 | /* Validate the path and use the returned directory fd for copying the | |
1684 | * target so we're sure that the path can't be changed behind our | |
1685 | * back. */ | |
1686 | dfd = path_open_parent_safe(i->path); | |
1687 | if (dfd < 0) | |
1688 | return dfd; | |
1689 | ||
074bd73f FB |
1690 | RUN_WITH_UMASK(0000) { |
1691 | mac_selinux_create_file_prepare(i->path, file_type); | |
c7700a77 | 1692 | r = mknodat(dfd, bn, i->mode | file_type, i->major_minor); |
074bd73f FB |
1693 | mac_selinux_create_file_clear(); |
1694 | } | |
1695 | ||
1696 | if (r < 0) { | |
c7700a77 FB |
1697 | struct stat st; |
1698 | ||
074bd73f FB |
1699 | if (errno == EPERM) { |
1700 | log_debug("We lack permissions, possibly because of cgroup configuration; " | |
1701 | "skipping creation of device node %s.", i->path); | |
1702 | return 0; | |
1703 | } | |
1704 | ||
1705 | if (errno != EEXIST) | |
1706 | return log_error_errno(errno, "Failed to create device node %s: %m", i->path); | |
1707 | ||
c7700a77 | 1708 | if (fstatat(dfd, bn, &st, 0) < 0) |
074bd73f FB |
1709 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); |
1710 | ||
1711 | if ((st.st_mode & S_IFMT) != file_type) { | |
1712 | ||
c55ac248 | 1713 | if (i->append_or_force) { |
074bd73f FB |
1714 | |
1715 | RUN_WITH_UMASK(0000) { | |
1716 | mac_selinux_create_file_prepare(i->path, file_type); | |
c7700a77 | 1717 | /* FIXME: need to introduce mknodat_atomic() */ |
074bd73f FB |
1718 | r = mknod_atomic(i->path, i->mode | file_type, i->major_minor); |
1719 | mac_selinux_create_file_clear(); | |
1720 | } | |
1721 | ||
1722 | if (r < 0) | |
1723 | return log_error_errno(r, "Failed to create device node \"%s\": %m", i->path); | |
1724 | creation = CREATION_FORCE; | |
1725 | } else { | |
1726 | log_debug("%s is not a device node.", i->path); | |
1727 | return 0; | |
1728 | } | |
1729 | } else | |
1730 | creation = CREATION_EXISTING; | |
1731 | } else | |
1732 | creation = CREATION_NORMAL; | |
1733 | ||
1734 | log_debug("%s %s device node \"%s\" %u:%u.", | |
1735 | creation_mode_verb_to_string(creation), | |
1736 | i->type == CREATE_BLOCK_DEVICE ? "block" : "char", | |
1737 | i->path, major(i->mode), minor(i->mode)); | |
1738 | ||
c7700a77 FB |
1739 | fd = openat(dfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1740 | if (fd < 0) | |
1741 | return log_error_errno(errno, "Failed to openat(%s): %m", i->path); | |
1742 | ||
9d874aec | 1743 | return fd_set_perms(i, fd, i->path, NULL); |
074bd73f FB |
1744 | } |
1745 | ||
a2fc2f8d | 1746 | static int create_fifo(Item *i, const char *path) { |
7ea5a87f | 1747 | _cleanup_close_ int pfd = -1, fd = -1; |
a2fc2f8d FB |
1748 | CreationMode creation; |
1749 | struct stat st; | |
7ea5a87f | 1750 | char *bn; |
a2fc2f8d FB |
1751 | int r; |
1752 | ||
7ea5a87f FB |
1753 | pfd = path_open_parent_safe(path); |
1754 | if (pfd < 0) | |
1755 | return pfd; | |
1756 | ||
1757 | bn = basename(path); | |
1758 | ||
a2fc2f8d FB |
1759 | RUN_WITH_UMASK(0000) { |
1760 | mac_selinux_create_file_prepare(path, S_IFIFO); | |
7ea5a87f | 1761 | r = mkfifoat(pfd, bn, i->mode); |
a2fc2f8d FB |
1762 | mac_selinux_create_file_clear(); |
1763 | } | |
1764 | ||
1765 | if (r < 0) { | |
1766 | if (errno != EEXIST) | |
1767 | return log_error_errno(errno, "Failed to create fifo %s: %m", path); | |
1768 | ||
7ea5a87f | 1769 | if (fstatat(pfd, bn, &st, AT_SYMLINK_NOFOLLOW) < 0) |
a2fc2f8d FB |
1770 | return log_error_errno(errno, "stat(%s) failed: %m", path); |
1771 | ||
1772 | if (!S_ISFIFO(st.st_mode)) { | |
1773 | ||
c55ac248 | 1774 | if (i->append_or_force) { |
a2fc2f8d FB |
1775 | RUN_WITH_UMASK(0000) { |
1776 | mac_selinux_create_file_prepare(path, S_IFIFO); | |
7ea5a87f | 1777 | r = mkfifoat_atomic(pfd, bn, i->mode); |
a2fc2f8d FB |
1778 | mac_selinux_create_file_clear(); |
1779 | } | |
1780 | ||
1781 | if (r < 0) | |
1782 | return log_error_errno(r, "Failed to create fifo %s: %m", path); | |
1783 | creation = CREATION_FORCE; | |
1784 | } else { | |
1785 | log_warning("\"%s\" already exists and is not a fifo.", path); | |
1786 | return 0; | |
1787 | } | |
1788 | } else | |
1789 | creation = CREATION_EXISTING; | |
1790 | } else | |
1791 | creation = CREATION_NORMAL; | |
7ea5a87f | 1792 | |
a2fc2f8d FB |
1793 | log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation), path); |
1794 | ||
7ea5a87f FB |
1795 | fd = openat(pfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1796 | if (fd < 0) | |
a5df05ff | 1797 | return log_error_errno(errno, "Failed to openat(%s): %m", path); |
7ea5a87f | 1798 | |
9d874aec | 1799 | return fd_set_perms(i, fd, i->path, NULL); |
a2fc2f8d FB |
1800 | } |
1801 | ||
9d874aec LP |
1802 | typedef int (*action_t)(Item *i, const char *path); |
1803 | typedef int (*fdaction_t)(Item *i, int fd, const char *path, const struct stat *st); | |
081043cf | 1804 | |
9d874aec | 1805 | static int item_do(Item *i, int fd, const char *path, fdaction_t action) { |
14f3480a | 1806 | struct stat st; |
936f6bdb | 1807 | int r = 0, q; |
e73a03e0 LP |
1808 | |
1809 | assert(i); | |
4dc7bfdf | 1810 | assert(path); |
936f6bdb | 1811 | assert(fd >= 0); |
14f3480a FB |
1812 | |
1813 | if (fstat(fd, &st) < 0) { | |
09f12798 | 1814 | r = log_error_errno(errno, "fstat() on file failed: %m"); |
14f3480a FB |
1815 | goto finish; |
1816 | } | |
a8d88783 MS |
1817 | |
1818 | /* This returns the first error we run into, but nevertheless | |
1819 | * tries to go on */ | |
9d874aec | 1820 | r = action(i, fd, path, &st); |
a8d88783 | 1821 | |
14f3480a | 1822 | if (S_ISDIR(st.st_mode)) { |
22dd8d35 | 1823 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
936f6bdb FB |
1824 | _cleanup_closedir_ DIR *d = NULL; |
1825 | struct dirent *de; | |
a8d88783 | 1826 | |
936f6bdb FB |
1827 | /* The passed 'fd' was opened with O_PATH. We need to convert |
1828 | * it into a 'regular' fd before reading the directory content. */ | |
1829 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); | |
a8d88783 | 1830 | |
936f6bdb FB |
1831 | d = opendir(procfs_path); |
1832 | if (!d) { | |
09f12798 LP |
1833 | log_error_errno(errno, "Failed to opendir() '%s': %m", procfs_path); |
1834 | if (r == 0) | |
1835 | r = -errno; | |
936f6bdb FB |
1836 | goto finish; |
1837 | } | |
a8d88783 | 1838 | |
936f6bdb | 1839 | FOREACH_DIRENT_ALL(de, d, q = -errno; goto finish) { |
936f6bdb | 1840 | int de_fd; |
a8d88783 | 1841 | |
936f6bdb FB |
1842 | if (dot_or_dot_dot(de->d_name)) |
1843 | continue; | |
1844 | ||
1845 | de_fd = openat(fd, de->d_name, O_NOFOLLOW|O_CLOEXEC|O_PATH); | |
9d874aec LP |
1846 | if (de_fd < 0) |
1847 | q = log_error_errno(errno, "Failed to open() file '%s': %m", de->d_name); | |
4dc7bfdf FB |
1848 | else { |
1849 | _cleanup_free_ char *de_path = NULL; | |
1850 | ||
62a85ee0 | 1851 | de_path = path_join(path, de->d_name); |
4dc7bfdf FB |
1852 | if (!de_path) |
1853 | q = log_oom(); | |
1854 | else | |
1855 | /* Pass ownership of dirent fd over */ | |
1856 | q = item_do(i, de_fd, de_path, action); | |
1857 | } | |
a8d88783 | 1858 | |
e73a03e0 LP |
1859 | if (q < 0 && r == 0) |
1860 | r = q; | |
a8d88783 | 1861 | } |
a8d88783 | 1862 | } |
936f6bdb FB |
1863 | finish: |
1864 | safe_close(fd); | |
e73a03e0 | 1865 | return r; |
a8d88783 MS |
1866 | } |
1867 | ||
936f6bdb | 1868 | static int glob_item(Item *i, action_t action) { |
df99a9ef | 1869 | _cleanup_globfree_ glob_t g = { |
ebf31a1f | 1870 | .gl_opendir = (void *(*)(const char *)) opendir_nomod, |
df99a9ef | 1871 | }; |
e73a03e0 | 1872 | int r = 0, k; |
99e68c0b MS |
1873 | char **fn; |
1874 | ||
84e72b5e ZJS |
1875 | k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g); |
1876 | if (k < 0 && k != -ENOENT) | |
1877 | return log_error_errno(k, "glob(%s) failed: %m", i->path); | |
99e68c0b | 1878 | |
c84a9488 ZJS |
1879 | STRV_FOREACH(fn, g.gl_pathv) { |
1880 | k = action(i, *fn); | |
e73a03e0 | 1881 | if (k < 0 && r == 0) |
99e68c0b | 1882 | r = k; |
936f6bdb FB |
1883 | } |
1884 | ||
1885 | return r; | |
1886 | } | |
081043cf | 1887 | |
936f6bdb FB |
1888 | static int glob_item_recursively(Item *i, fdaction_t action) { |
1889 | _cleanup_globfree_ glob_t g = { | |
1890 | .gl_opendir = (void *(*)(const char *)) opendir_nomod, | |
1891 | }; | |
1892 | int r = 0, k; | |
1893 | char **fn; | |
1894 | ||
1895 | k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g); | |
1896 | if (k < 0 && k != -ENOENT) | |
1897 | return log_error_errno(k, "glob(%s) failed: %m", i->path); | |
1898 | ||
1899 | STRV_FOREACH(fn, g.gl_pathv) { | |
1900 | _cleanup_close_ int fd = -1; | |
936f6bdb FB |
1901 | |
1902 | /* Make sure we won't trigger/follow file object (such as | |
1903 | * device nodes, automounts, ...) pointed out by 'fn' with | |
1904 | * O_PATH. Note, when O_PATH is used, flags other than | |
1905 | * O_CLOEXEC, O_DIRECTORY, and O_NOFOLLOW are ignored. */ | |
1906 | ||
1907 | fd = open(*fn, O_CLOEXEC|O_NOFOLLOW|O_PATH); | |
1908 | if (fd < 0) { | |
09f12798 LP |
1909 | log_error_errno(errno, "Opening '%s' failed: %m", *fn); |
1910 | if (r == 0) | |
1911 | r = -errno; | |
936f6bdb FB |
1912 | continue; |
1913 | } | |
1914 | ||
9d874aec | 1915 | k = item_do(i, fd, *fn, action); |
936f6bdb FB |
1916 | if (k < 0 && r == 0) |
1917 | r = k; | |
1918 | ||
1919 | /* we passed fd ownership to the previous call */ | |
1920 | fd = -1; | |
c84a9488 | 1921 | } |
99e68c0b | 1922 | |
99e68c0b MS |
1923 | return r; |
1924 | } | |
1925 | ||
3b63d2d3 | 1926 | static int create_item(Item *i) { |
294929f8 | 1927 | CreationMode creation; |
a2fc2f8d | 1928 | int r = 0; |
5008d581 | 1929 | |
3b63d2d3 | 1930 | assert(i); |
5008d581 | 1931 | |
582deb84 ZJS |
1932 | log_debug("Running create action for entry %c %s", (char) i->type, i->path); |
1933 | ||
3b63d2d3 LP |
1934 | switch (i->type) { |
1935 | ||
1936 | case IGNORE_PATH: | |
78a92a5a | 1937 | case IGNORE_DIRECTORY_PATH: |
3b63d2d3 LP |
1938 | case REMOVE_PATH: |
1939 | case RECURSIVE_REMOVE_PATH: | |
1940 | return 0; | |
5008d581 | 1941 | |
eccebf4b | 1942 | case TRUNCATE_FILE: |
3b63d2d3 | 1943 | case CREATE_FILE: |
7fa10748 LP |
1944 | RUN_WITH_UMASK(0000) |
1945 | (void) mkdir_parents_label(i->path, 0755); | |
1946 | ||
eccebf4b ZS |
1947 | if ((i->type == CREATE_FILE && i->append_or_force) || i->type == TRUNCATE_FILE) |
1948 | r = truncate_file(i, i->path); | |
1949 | else | |
1950 | r = create_file(i, i->path); | |
5ec9d065 | 1951 | |
5ec9d065 FB |
1952 | if (r < 0) |
1953 | return r; | |
1954 | break; | |
1955 | ||
7b887f22 | 1956 | case COPY_FILES: |
7fa10748 LP |
1957 | RUN_WITH_UMASK(0000) |
1958 | (void) mkdir_parents_label(i->path, 0755); | |
1959 | ||
b1f7b17f | 1960 | r = copy_files(i); |
849958d1 LP |
1961 | if (r < 0) |
1962 | return r; | |
849958d1 LP |
1963 | break; |
1964 | ||
d4e9eb91 | 1965 | case WRITE_FILE: |
936f6bdb | 1966 | r = glob_item(i, write_one_file); |
f05bc3f7 MS |
1967 | if (r < 0) |
1968 | return r; | |
5008d581 | 1969 | |
3b63d2d3 LP |
1970 | break; |
1971 | ||
3b63d2d3 | 1972 | case CREATE_DIRECTORY: |
d7b8eec7 | 1973 | case TRUNCATE_DIRECTORY: |
4c39d899 FB |
1974 | RUN_WITH_UMASK(0000) |
1975 | (void) mkdir_parents_label(i->path, 0755); | |
1976 | ||
1977 | r = create_directory(i, i->path); | |
1978 | if (r < 0) | |
1979 | return r; | |
1980 | break; | |
1981 | ||
d7b8eec7 | 1982 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
1983 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
1984 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
d7b8eec7 | 1985 | RUN_WITH_UMASK(0000) |
7fa10748 | 1986 | (void) mkdir_parents_label(i->path, 0755); |
d7b8eec7 | 1987 | |
4c39d899 | 1988 | r = create_subvolume(i, i->path); |
4ad36844 FB |
1989 | if (r < 0) |
1990 | return r; | |
1991 | break; | |
5fb13eb5 | 1992 | |
df8dee85 | 1993 | case EMPTY_DIRECTORY: |
54946021 | 1994 | r = glob_item(i, empty_directory); |
f05bc3f7 MS |
1995 | if (r < 0) |
1996 | return r; | |
3b63d2d3 | 1997 | break; |
ee17ee7c LP |
1998 | |
1999 | case CREATE_FIFO: | |
a2fc2f8d | 2000 | RUN_WITH_UMASK(0000) |
7fa10748 LP |
2001 | (void) mkdir_parents_label(i->path, 0755); |
2002 | ||
a2fc2f8d | 2003 | r = create_fifo(i, i->path); |
f05bc3f7 MS |
2004 | if (r < 0) |
2005 | return r; | |
ee17ee7c | 2006 | break; |
a8d88783 | 2007 | |
5c5ccf12 | 2008 | case CREATE_SYMLINK: { |
7fa10748 LP |
2009 | RUN_WITH_UMASK(0000) |
2010 | (void) mkdir_parents_label(i->path, 0755); | |
2011 | ||
ecabcf8b | 2012 | mac_selinux_create_file_prepare(i->path, S_IFLNK); |
4cef1923 | 2013 | r = symlink(i->argument, i->path); |
ecabcf8b | 2014 | mac_selinux_create_file_clear(); |
e9a5ef7c | 2015 | |
468d726b | 2016 | if (r < 0) { |
2e78fa79 | 2017 | _cleanup_free_ char *x = NULL; |
468d726b | 2018 | |
4a62c710 | 2019 | if (errno != EEXIST) |
4cef1923 | 2020 | return log_error_errno(errno, "symlink(%s, %s) failed: %m", i->argument, i->path); |
2e78fa79 LP |
2021 | |
2022 | r = readlink_malloc(i->path, &x); | |
4cef1923 | 2023 | if (r < 0 || !streq(i->argument, x)) { |
2e78fa79 | 2024 | |
c55ac248 | 2025 | if (i->append_or_force) { |
ecabcf8b | 2026 | mac_selinux_create_file_prepare(i->path, S_IFLNK); |
4cef1923 | 2027 | r = symlink_atomic(i->argument, i->path); |
ecabcf8b | 2028 | mac_selinux_create_file_clear(); |
2e78fa79 | 2029 | |
2ef5de1b | 2030 | if (IN_SET(r, -EISDIR, -EEXIST, -ENOTEMPTY)) { |
b3f5897f WD |
2031 | r = rm_rf(i->path, REMOVE_ROOT|REMOVE_PHYSICAL); |
2032 | if (r < 0) | |
2033 | return log_error_errno(r, "rm -fr %s failed: %m", i->path); | |
2034 | ||
2035 | mac_selinux_create_file_prepare(i->path, S_IFLNK); | |
4cef1923 | 2036 | r = symlink(i->argument, i->path) < 0 ? -errno : 0; |
b3f5897f WD |
2037 | mac_selinux_create_file_clear(); |
2038 | } | |
f647962d | 2039 | if (r < 0) |
4cef1923 | 2040 | return log_error_errno(r, "symlink(%s, %s) failed: %m", i->argument, i->path); |
a542c4dc | 2041 | |
294929f8 | 2042 | creation = CREATION_FORCE; |
1554afae | 2043 | } else { |
582deb84 | 2044 | log_debug("\"%s\" is not a symlink or does not point to the correct path.", i->path); |
1554afae LP |
2045 | return 0; |
2046 | } | |
294929f8 ZJS |
2047 | } else |
2048 | creation = CREATION_EXISTING; | |
2049 | } else | |
a542c4dc | 2050 | |
294929f8 | 2051 | creation = CREATION_NORMAL; |
7a7d5db7 | 2052 | log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation), i->path); |
468d726b | 2053 | break; |
5c5ccf12 | 2054 | } |
468d726b LP |
2055 | |
2056 | case CREATE_BLOCK_DEVICE: | |
074bd73f | 2057 | case CREATE_CHAR_DEVICE: |
cb7ed9df | 2058 | if (have_effective_cap(CAP_MKNOD) == 0) { |
713998cf LP |
2059 | /* In a container we lack CAP_MKNOD. We shouldn't attempt to create the device node in that |
2060 | * case to avoid noise, and we don't support virtualized devices in containers anyway. */ | |
cb7ed9df LP |
2061 | |
2062 | log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path); | |
2063 | return 0; | |
2064 | } | |
2065 | ||
7fa10748 LP |
2066 | RUN_WITH_UMASK(0000) |
2067 | (void) mkdir_parents_label(i->path, 0755); | |
2068 | ||
074bd73f | 2069 | r = create_device(i, i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR); |
468d726b LP |
2070 | if (r < 0) |
2071 | return r; | |
2072 | ||
2073 | break; | |
468d726b | 2074 | |
e73a03e0 | 2075 | case ADJUST_MODE: |
777b87e7 | 2076 | case RELABEL_PATH: |
936f6bdb | 2077 | r = glob_item(i, path_set_perms); |
777b87e7 | 2078 | if (r < 0) |
96ca8194 | 2079 | return r; |
777b87e7 MS |
2080 | break; |
2081 | ||
a8d88783 | 2082 | case RECURSIVE_RELABEL_PATH: |
936f6bdb | 2083 | r = glob_item_recursively(i, fd_set_perms); |
a8d88783 MS |
2084 | if (r < 0) |
2085 | return r; | |
ebf4e801 | 2086 | break; |
e73a03e0 | 2087 | |
ebf4e801 | 2088 | case SET_XATTR: |
936f6bdb | 2089 | r = glob_item(i, path_set_xattrs); |
b705ab6a ZJS |
2090 | if (r < 0) |
2091 | return r; | |
2092 | break; | |
2093 | ||
2094 | case RECURSIVE_SET_XATTR: | |
936f6bdb | 2095 | r = glob_item_recursively(i, fd_set_xattrs); |
ebf4e801 MW |
2096 | if (r < 0) |
2097 | return r; | |
e73a03e0 | 2098 | break; |
f8eeeaf9 ZJS |
2099 | |
2100 | case SET_ACL: | |
936f6bdb | 2101 | r = glob_item(i, path_set_acls); |
f8eeeaf9 ZJS |
2102 | if (r < 0) |
2103 | return r; | |
b705ab6a ZJS |
2104 | break; |
2105 | ||
2106 | case RECURSIVE_SET_ACL: | |
936f6bdb | 2107 | r = glob_item_recursively(i, fd_set_acls); |
b705ab6a ZJS |
2108 | if (r < 0) |
2109 | return r; | |
2110 | break; | |
22c3a6ca | 2111 | |
88ec4dfa | 2112 | case SET_ATTRIBUTE: |
936f6bdb | 2113 | r = glob_item(i, path_set_attribute); |
22c3a6ca GB |
2114 | if (r < 0) |
2115 | return r; | |
2116 | break; | |
2117 | ||
88ec4dfa | 2118 | case RECURSIVE_SET_ATTRIBUTE: |
936f6bdb | 2119 | r = glob_item_recursively(i, fd_set_attribute); |
22c3a6ca GB |
2120 | if (r < 0) |
2121 | return r; | |
2122 | break; | |
3b63d2d3 LP |
2123 | } |
2124 | ||
f05bc3f7 | 2125 | return 0; |
3b63d2d3 LP |
2126 | } |
2127 | ||
a0896123 | 2128 | static int remove_item_instance(Item *i, const char *instance) { |
3b63d2d3 LP |
2129 | int r; |
2130 | ||
2131 | assert(i); | |
2132 | ||
2133 | switch (i->type) { | |
2134 | ||
3b63d2d3 | 2135 | case REMOVE_PATH: |
4a62c710 | 2136 | if (remove(instance) < 0 && errno != ENOENT) |
3f93da98 | 2137 | return log_error_errno(errno, "rm(%s): %m", instance); |
3b63d2d3 LP |
2138 | |
2139 | break; | |
2140 | ||
3b63d2d3 | 2141 | case RECURSIVE_REMOVE_PATH: |
2c575977 | 2142 | /* FIXME: we probably should use dir_cleanup() here instead of rm_rf() so that 'x' is honoured. */ |
582deb84 | 2143 | log_debug("rm -rf \"%s\"", instance); |
2c575977 | 2144 | r = rm_rf(instance, REMOVE_ROOT|REMOVE_SUBVOLUME|REMOVE_PHYSICAL); |
f647962d MS |
2145 | if (r < 0 && r != -ENOENT) |
2146 | return log_error_errno(r, "rm_rf(%s): %m", instance); | |
3b63d2d3 LP |
2147 | |
2148 | break; | |
7fcb4b9b ZJS |
2149 | |
2150 | default: | |
2151 | assert_not_reached("wut?"); | |
3b63d2d3 LP |
2152 | } |
2153 | ||
2154 | return 0; | |
2155 | } | |
2156 | ||
a0896123 | 2157 | static int remove_item(Item *i) { |
2c575977 LP |
2158 | int r; |
2159 | ||
b8bb3e8f LP |
2160 | assert(i); |
2161 | ||
582deb84 ZJS |
2162 | log_debug("Running remove action for entry %c %s", (char) i->type, i->path); |
2163 | ||
b8bb3e8f LP |
2164 | switch (i->type) { |
2165 | ||
b8bb3e8f | 2166 | case TRUNCATE_DIRECTORY: |
2c575977 LP |
2167 | /* FIXME: we probably should use dir_cleanup() here instead of rm_rf() so that 'x' is honoured. */ |
2168 | log_debug("rm -rf \"%s\"", i->path); | |
2169 | r = rm_rf(i->path, REMOVE_PHYSICAL); | |
2170 | if (r < 0 && r != -ENOENT) | |
2171 | return log_error_errno(r, "rm_rf(%s): %m", i->path); | |
2172 | ||
2173 | return 0; | |
2174 | ||
2175 | case REMOVE_PATH: | |
99e68c0b | 2176 | case RECURSIVE_REMOVE_PATH: |
936f6bdb | 2177 | return glob_item(i, remove_item_instance); |
b8bb3e8f | 2178 | |
df8dee85 ZJS |
2179 | default: |
2180 | return 0; | |
2181 | } | |
b8bb3e8f LP |
2182 | } |
2183 | ||
78a92a5a | 2184 | static int clean_item_instance(Item *i, const char* instance) { |
7fd1b19b | 2185 | _cleanup_closedir_ DIR *d = NULL; |
78a92a5a MS |
2186 | struct stat s, ps; |
2187 | bool mountpoint; | |
78a92a5a | 2188 | usec_t cutoff, n; |
582deb84 | 2189 | char timestamp[FORMAT_TIMESTAMP_MAX]; |
78a92a5a MS |
2190 | |
2191 | assert(i); | |
2192 | ||
2193 | if (!i->age_set) | |
2194 | return 0; | |
2195 | ||
2196 | n = now(CLOCK_REALTIME); | |
2197 | if (n < i->age) | |
2198 | return 0; | |
2199 | ||
2200 | cutoff = n - i->age; | |
2201 | ||
df99a9ef | 2202 | d = opendir_nomod(instance); |
78a92a5a | 2203 | if (!d) { |
d710aaf7 | 2204 | if (IN_SET(errno, ENOENT, ENOTDIR)) { |
582deb84 | 2205 | log_debug_errno(errno, "Directory \"%s\": %m", instance); |
78a92a5a | 2206 | return 0; |
582deb84 | 2207 | } |
78a92a5a | 2208 | |
d710aaf7 | 2209 | return log_error_errno(errno, "Failed to open directory %s: %m", instance); |
78a92a5a MS |
2210 | } |
2211 | ||
4a62c710 MS |
2212 | if (fstat(dirfd(d), &s) < 0) |
2213 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); | |
78a92a5a | 2214 | |
baaa35ad ZJS |
2215 | if (!S_ISDIR(s.st_mode)) |
2216 | return log_error_errno(SYNTHETIC_ERRNO(ENOTDIR), | |
2217 | "%s is not a directory.", i->path); | |
78a92a5a | 2218 | |
4a62c710 MS |
2219 | if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) |
2220 | return log_error_errno(errno, "stat(%s/..) failed: %m", i->path); | |
78a92a5a | 2221 | |
2bb158c1 | 2222 | mountpoint = s.st_dev != ps.st_dev || s.st_ino == ps.st_ino; |
78a92a5a | 2223 | |
582deb84 ZJS |
2224 | log_debug("Cleanup threshold for %s \"%s\" is %s", |
2225 | mountpoint ? "mount point" : "directory", | |
2226 | instance, | |
2227 | format_timestamp_us(timestamp, sizeof(timestamp), cutoff)); | |
2228 | ||
2229 | return dir_cleanup(i, instance, d, &s, cutoff, s.st_dev, mountpoint, | |
2230 | MAX_DEPTH, i->keep_first_level); | |
78a92a5a MS |
2231 | } |
2232 | ||
2233 | static int clean_item(Item *i) { | |
78a92a5a MS |
2234 | assert(i); |
2235 | ||
582deb84 ZJS |
2236 | log_debug("Running clean action for entry %c %s", (char) i->type, i->path); |
2237 | ||
78a92a5a MS |
2238 | switch (i->type) { |
2239 | case CREATE_DIRECTORY: | |
d7b8eec7 | 2240 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
2241 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
2242 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
78a92a5a MS |
2243 | case TRUNCATE_DIRECTORY: |
2244 | case IGNORE_PATH: | |
849958d1 | 2245 | case COPY_FILES: |
78a92a5a | 2246 | clean_item_instance(i, i->path); |
df8dee85 | 2247 | return 0; |
65241c14 | 2248 | case EMPTY_DIRECTORY: |
78a92a5a | 2249 | case IGNORE_DIRECTORY_PATH: |
936f6bdb | 2250 | return glob_item(i, clean_item_instance); |
78a92a5a | 2251 | default: |
df8dee85 | 2252 | return 0; |
78a92a5a | 2253 | } |
78a92a5a MS |
2254 | } |
2255 | ||
599ebe29 | 2256 | static int process_item(Item *i, OperationMask operation) { |
811a1587 LP |
2257 | OperationMask todo; |
2258 | int r, q, p; | |
3b63d2d3 LP |
2259 | |
2260 | assert(i); | |
2261 | ||
811a1587 LP |
2262 | todo = operation & ~i->done; |
2263 | if (todo == 0) /* Everything already done? */ | |
1910cd0e LP |
2264 | return 0; |
2265 | ||
811a1587 | 2266 | i->done |= operation; |
1910cd0e | 2267 | |
a5648b80 | 2268 | r = chase_symlinks(i->path, arg_root, CHASE_NO_AUTOFS|CHASE_WARN, NULL, NULL); |
21af3386 | 2269 | if (r == -EREMOTE) { |
145b8d0f | 2270 | log_notice_errno(r, "Skipping %s", i->path); |
811a1587 | 2271 | return 0; |
145b8d0f FB |
2272 | } |
2273 | if (r < 0) | |
48d96904 | 2274 | log_debug_errno(r, "Failed to determine whether '%s' is below autofs, ignoring: %m", i->path); |
655f2da0 | 2275 | |
599ebe29 | 2276 | r = FLAGS_SET(operation, OPERATION_CREATE) ? create_item(i) : 0; |
6d7b5433 WD |
2277 | /* Failure can only be tolerated for create */ |
2278 | if (i->allow_failure) | |
2279 | r = 0; | |
3b63d2d3 | 2280 | |
599ebe29 LP |
2281 | q = FLAGS_SET(operation, OPERATION_REMOVE) ? remove_item(i) : 0; |
2282 | p = FLAGS_SET(operation, OPERATION_CLEAN) ? clean_item(i) : 0; | |
1a967b6b | 2283 | |
811a1587 | 2284 | return r < 0 ? r : |
1db50423 ZJS |
2285 | q < 0 ? q : |
2286 | p; | |
3b63d2d3 LP |
2287 | } |
2288 | ||
599ebe29 | 2289 | static int process_item_array(ItemArray *array, OperationMask operation) { |
96d10d78 LP |
2290 | int r = 0; |
2291 | size_t n; | |
753615e8 | 2292 | |
3f93da98 ZJS |
2293 | assert(array); |
2294 | ||
811a1587 LP |
2295 | /* Create any parent first. */ |
2296 | if (FLAGS_SET(operation, OPERATION_CREATE) && array->parent) | |
2297 | r = process_item_array(array->parent, operation & OPERATION_CREATE); | |
2298 | ||
2299 | /* Clean up all children first */ | |
2300 | if ((operation & (OPERATION_REMOVE|OPERATION_CLEAN)) && !set_isempty(array->children)) { | |
2301 | Iterator i; | |
2302 | ItemArray *c; | |
2303 | ||
2304 | SET_FOREACH(c, array->children, i) { | |
2305 | int k; | |
2306 | ||
2307 | k = process_item_array(c, operation & (OPERATION_REMOVE|OPERATION_CLEAN)); | |
2308 | if (k < 0 && r == 0) | |
2309 | r = k; | |
2310 | } | |
2311 | } | |
2312 | ||
96d10d78 LP |
2313 | for (n = 0; n < array->n_items; n++) { |
2314 | int k; | |
2315 | ||
599ebe29 | 2316 | k = process_item(array->items + n, operation); |
3f93da98 ZJS |
2317 | if (k < 0 && r == 0) |
2318 | r = k; | |
2319 | } | |
2320 | ||
2321 | return r; | |
2322 | } | |
3b63d2d3 | 2323 | |
3f93da98 ZJS |
2324 | static void item_free_contents(Item *i) { |
2325 | assert(i); | |
3b63d2d3 | 2326 | free(i->path); |
468d726b | 2327 | free(i->argument); |
ebf4e801 | 2328 | strv_free(i->xattrs); |
f8eeeaf9 | 2329 | |
349cc4a5 | 2330 | #if HAVE_ACL |
f8eeeaf9 ZJS |
2331 | acl_free(i->acl_access); |
2332 | acl_free(i->acl_default); | |
2333 | #endif | |
3b63d2d3 LP |
2334 | } |
2335 | ||
87938c3b | 2336 | static ItemArray* item_array_free(ItemArray *a) { |
96d10d78 | 2337 | size_t n; |
3f93da98 ZJS |
2338 | |
2339 | if (!a) | |
87938c3b | 2340 | return NULL; |
3f93da98 | 2341 | |
96d10d78 | 2342 | for (n = 0; n < a->n_items; n++) |
3f93da98 | 2343 | item_free_contents(a->items + n); |
96d10d78 | 2344 | |
811a1587 | 2345 | set_free(a->children); |
3f93da98 | 2346 | free(a->items); |
87938c3b | 2347 | return mfree(a); |
3f93da98 | 2348 | } |
e2f2fb78 | 2349 | |
93bab288 | 2350 | static int item_compare(const Item *a, const Item *b) { |
17493fa5 LP |
2351 | /* Make sure that the ownership taking item is put first, so |
2352 | * that we first create the node, and then can adjust it */ | |
2353 | ||
93bab288 | 2354 | if (takes_ownership(a->type) && !takes_ownership(b->type)) |
17493fa5 | 2355 | return -1; |
93bab288 | 2356 | if (!takes_ownership(a->type) && takes_ownership(b->type)) |
17493fa5 LP |
2357 | return 1; |
2358 | ||
93bab288 | 2359 | return CMP(a->type, b->type); |
17493fa5 LP |
2360 | } |
2361 | ||
3f93da98 | 2362 | static bool item_compatible(Item *a, Item *b) { |
bfe95f35 LP |
2363 | assert(a); |
2364 | assert(b); | |
3f93da98 | 2365 | assert(streq(a->path, b->path)); |
bfe95f35 | 2366 | |
3f93da98 ZJS |
2367 | if (takes_ownership(a->type) && takes_ownership(b->type)) |
2368 | /* check if the items are the same */ | |
2369 | return streq_ptr(a->argument, b->argument) && | |
bfe95f35 | 2370 | |
3f93da98 ZJS |
2371 | a->uid_set == b->uid_set && |
2372 | a->uid == b->uid && | |
bfe95f35 | 2373 | |
3f93da98 ZJS |
2374 | a->gid_set == b->gid_set && |
2375 | a->gid == b->gid && | |
bfe95f35 | 2376 | |
3f93da98 ZJS |
2377 | a->mode_set == b->mode_set && |
2378 | a->mode == b->mode && | |
bfe95f35 | 2379 | |
3f93da98 ZJS |
2380 | a->age_set == b->age_set && |
2381 | a->age == b->age && | |
bfe95f35 | 2382 | |
3f93da98 | 2383 | a->mask_perms == b->mask_perms && |
bfe95f35 | 2384 | |
3f93da98 | 2385 | a->keep_first_level == b->keep_first_level && |
468d726b | 2386 | |
3f93da98 | 2387 | a->major_minor == b->major_minor; |
468d726b | 2388 | |
bfe95f35 LP |
2389 | return true; |
2390 | } | |
2391 | ||
a2aced4a DR |
2392 | static bool should_include_path(const char *path) { |
2393 | char **prefix; | |
2394 | ||
abef3f91 | 2395 | STRV_FOREACH(prefix, arg_exclude_prefixes) |
582deb84 ZJS |
2396 | if (path_startswith(path, *prefix)) { |
2397 | log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.", | |
2398 | path, *prefix); | |
5c795114 | 2399 | return false; |
582deb84 | 2400 | } |
a2aced4a | 2401 | |
abef3f91 | 2402 | STRV_FOREACH(prefix, arg_include_prefixes) |
582deb84 ZJS |
2403 | if (path_startswith(path, *prefix)) { |
2404 | log_debug("Entry \"%s\" matches include prefix \"%s\".", path, *prefix); | |
a2aced4a | 2405 | return true; |
582deb84 | 2406 | } |
a2aced4a | 2407 | |
6b000af4 | 2408 | /* no matches, so we should include this path only if we have no allow list at all */ |
7b943bb7 | 2409 | if (strv_isempty(arg_include_prefixes)) |
582deb84 ZJS |
2410 | return true; |
2411 | ||
2412 | log_debug("Entry \"%s\" does not match any include prefix, skipping.", path); | |
2413 | return false; | |
a2aced4a DR |
2414 | } |
2415 | ||
4cef1923 FB |
2416 | static int specifier_expansion_from_arg(Item *i) { |
2417 | _cleanup_free_ char *unescaped = NULL, *resolved = NULL; | |
2418 | char **xattr; | |
2419 | int r; | |
2420 | ||
2421 | assert(i); | |
2422 | ||
4e361acc | 2423 | if (!i->argument) |
4cef1923 FB |
2424 | return 0; |
2425 | ||
2426 | switch (i->type) { | |
2427 | case COPY_FILES: | |
2428 | case CREATE_SYMLINK: | |
2429 | case CREATE_FILE: | |
2430 | case TRUNCATE_FILE: | |
2431 | case WRITE_FILE: | |
2432 | r = cunescape(i->argument, 0, &unescaped); | |
2433 | if (r < 0) | |
2434 | return log_error_errno(r, "Failed to unescape parameter to write: %s", i->argument); | |
2435 | ||
2436 | r = specifier_printf(unescaped, specifier_table, NULL, &resolved); | |
2437 | if (r < 0) | |
2438 | return r; | |
2439 | ||
2440 | free_and_replace(i->argument, resolved); | |
2441 | break; | |
2442 | ||
2443 | case SET_XATTR: | |
2444 | case RECURSIVE_SET_XATTR: | |
dfe01841 | 2445 | STRV_FOREACH(xattr, i->xattrs) { |
4cef1923 FB |
2446 | r = specifier_printf(*xattr, specifier_table, NULL, &resolved); |
2447 | if (r < 0) | |
2448 | return r; | |
2449 | ||
2450 | free_and_replace(*xattr, resolved); | |
2451 | } | |
2452 | break; | |
2453 | ||
2454 | default: | |
2455 | break; | |
2456 | } | |
2457 | return 0; | |
2458 | } | |
2459 | ||
a2d1fb88 LP |
2460 | static int patch_var_run(const char *fname, unsigned line, char **path) { |
2461 | const char *k; | |
2462 | char *n; | |
2463 | ||
2464 | assert(path); | |
2465 | assert(*path); | |
2466 | ||
2467 | /* Optionally rewrites lines referencing /var/run/, to use /run/ instead. Why bother? tmpfiles merges lines in | |
2468 | * some cases and detects conflicts in others. If files/directories are specified through two equivalent lines | |
2469 | * this is problematic as neither case will be detected. Ideally we'd detect these cases by resolving symlinks | |
2470 | * early, but that's precisely not what we can do here as this code very likely is running very early on, at a | |
2471 | * time where the paths in question are not available yet, or even more importantly, our own tmpfiles rules | |
2472 | * might create the paths that are intermediary to the listed paths. We can't really cover the generic case, | |
2473 | * but the least we can do is cover the specific case of /var/run vs. /run, as /var/run is a legacy name for | |
2474 | * /run only, and we explicitly document that and require that on systemd systems the former is a symlink to | |
2475 | * the latter. Moreover files below this path are by far the primary usecase for tmpfiles.d/. */ | |
2476 | ||
2477 | k = path_startswith(*path, "/var/run/"); | |
2478 | if (isempty(k)) /* Don't complain about other paths than /var/run, and not about /var/run itself either. */ | |
2479 | return 0; | |
2480 | ||
2d9b74ba | 2481 | n = path_join("/run", k); |
a2d1fb88 LP |
2482 | if (!n) |
2483 | return log_oom(); | |
2484 | ||
2485 | /* Also log about this briefly. We do so at LOG_NOTICE level, as we fixed up the situation automatically, hence | |
2486 | * there's no immediate need for action by the user. However, in the interest of making things less confusing | |
2487 | * to the user, let's still inform the user that these snippets should really be updated. */ | |
afb7e1ce | 2488 | log_syntax(NULL, LOG_NOTICE, fname, line, 0, "Line references path below legacy directory /var/run/, updating %s → %s; please update the tmpfiles.d/ drop-in file accordingly.", *path, n); |
a2d1fb88 | 2489 | |
81fa4479 | 2490 | free_and_replace(*path, n); |
a2d1fb88 LP |
2491 | |
2492 | return 0; | |
2493 | } | |
2494 | ||
a3451c2c LP |
2495 | static int find_uid(const char *user, uid_t *ret_uid, Hashmap **cache) { |
2496 | int r; | |
2497 | ||
2498 | assert(user); | |
2499 | assert(ret_uid); | |
2500 | ||
2501 | /* First: parse as numeric UID string */ | |
2502 | r = parse_uid(user, ret_uid); | |
2503 | if (r >= 0) | |
2504 | return r; | |
2505 | ||
2506 | /* Second: pass to NSS if we are running "online" */ | |
2507 | if (!arg_root) | |
2508 | return get_user_creds(&user, ret_uid, NULL, NULL, NULL, 0); | |
2509 | ||
2510 | /* Third, synthesize "root" unconditionally */ | |
2511 | if (streq(user, "root")) { | |
2512 | *ret_uid = 0; | |
2513 | return 0; | |
2514 | } | |
2515 | ||
2516 | /* Fourth: use fgetpwent() to read /etc/passwd directly, if we are "offline" */ | |
2517 | return name_to_uid_offline(arg_root, user, ret_uid, cache); | |
2518 | } | |
2519 | ||
2520 | static int find_gid(const char *group, gid_t *ret_gid, Hashmap **cache) { | |
2521 | int r; | |
2522 | ||
2523 | assert(group); | |
2524 | assert(ret_gid); | |
2525 | ||
2526 | /* First: parse as numeric GID string */ | |
2527 | r = parse_gid(group, ret_gid); | |
2528 | if (r >= 0) | |
2529 | return r; | |
2530 | ||
2531 | /* Second: pass to NSS if we are running "online" */ | |
2532 | if (!arg_root) | |
2533 | return get_group_creds(&group, ret_gid, 0); | |
2534 | ||
2535 | /* Third, synthesize "root" unconditionally */ | |
2536 | if (streq(group, "root")) { | |
2537 | *ret_gid = 0; | |
2538 | return 0; | |
2539 | } | |
2540 | ||
2541 | /* Fourth: use fgetgrent() to read /etc/group directly, if we are "offline" */ | |
2542 | return name_to_gid_offline(arg_root, group, ret_gid, cache); | |
2543 | } | |
2544 | ||
2545 | static int parse_line( | |
2546 | const char *fname, | |
2547 | unsigned line, | |
2548 | const char *buffer, | |
2549 | bool *invalid_config, | |
2550 | Hashmap **uid_cache, | |
2551 | Hashmap **gid_cache) { | |
1731e34a | 2552 | |
cde684a2 | 2553 | _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL; |
3f93da98 ZJS |
2554 | _cleanup_(item_free_contents) Item i = {}; |
2555 | ItemArray *existing; | |
ef43a391 | 2556 | OrderedHashmap *h; |
657cf7f4 | 2557 | int r, pos; |
c55ac248 | 2558 | bool append_or_force = false, boot = false, allow_failure = false; |
3b63d2d3 LP |
2559 | |
2560 | assert(fname); | |
2561 | assert(line >= 1); | |
2562 | assert(buffer); | |
2563 | ||
68685607 | 2564 | r = extract_many_words( |
4034a06d | 2565 | &buffer, |
68685607 | 2566 | NULL, |
4ec85141 | 2567 | EXTRACT_UNQUOTE, |
4034a06d LP |
2568 | &action, |
2569 | &path, | |
2570 | &mode, | |
2571 | &user, | |
2572 | &group, | |
2573 | &age, | |
2574 | NULL); | |
d9daae55 | 2575 | if (r < 0) { |
751223fe ZJS |
2576 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
2577 | /* invalid quoting and such or an unknown specifier */ | |
d9daae55 | 2578 | *invalid_config = true; |
d02933fd | 2579 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to parse line: %m"); |
4b93699d | 2580 | } else if (r < 2) { |
d9daae55 | 2581 | *invalid_config = true; |
d02933fd | 2582 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Syntax error."); |
5008d581 LP |
2583 | } |
2584 | ||
e7b88b7b | 2585 | if (!empty_or_dash(buffer)) { |
4034a06d LP |
2586 | i.argument = strdup(buffer); |
2587 | if (!i.argument) | |
2588 | return log_oom(); | |
2589 | } | |
2590 | ||
2e78fa79 | 2591 | if (isempty(action)) { |
d9daae55 | 2592 | *invalid_config = true; |
d02933fd | 2593 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Command too short '%s'.", action); |
2e78fa79 LP |
2594 | } |
2595 | ||
5f255144 ZJS |
2596 | for (pos = 1; action[pos]; pos++) { |
2597 | if (action[pos] == '!' && !boot) | |
2598 | boot = true; | |
c55ac248 ZS |
2599 | else if (action[pos] == '+' && !append_or_force) |
2600 | append_or_force = true; | |
6d7b5433 WD |
2601 | else if (action[pos] == '-' && !allow_failure) |
2602 | allow_failure = true; | |
5f255144 | 2603 | else { |
d9daae55 | 2604 | *invalid_config = true; |
d02933fd | 2605 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Unknown modifiers in command '%s'", action); |
5f255144 | 2606 | } |
2e78fa79 LP |
2607 | } |
2608 | ||
582deb84 | 2609 | if (boot && !arg_boot) { |
d02933fd | 2610 | log_syntax(NULL, LOG_DEBUG, fname, line, 0, "Ignoring entry %s \"%s\" because --boot is not specified.", action, path); |
c4708f13 | 2611 | return 0; |
582deb84 | 2612 | } |
c4708f13 | 2613 | |
3f93da98 | 2614 | i.type = action[0]; |
c55ac248 | 2615 | i.append_or_force = append_or_force; |
6d7b5433 | 2616 | i.allow_failure = allow_failure; |
2e78fa79 | 2617 | |
3f93da98 | 2618 | r = specifier_printf(path, specifier_table, NULL, &i.path); |
5a8575ef | 2619 | if (r == -ENXIO) |
4cef1923 | 2620 | return log_unresolvable_specifier(fname, line); |
d9daae55 | 2621 | if (r < 0) { |
751223fe ZJS |
2622 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
2623 | *invalid_config = true; | |
d02933fd | 2624 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to replace specifiers in '%s': %m", path); |
d9daae55 | 2625 | } |
1731e34a | 2626 | |
a2d1fb88 LP |
2627 | r = patch_var_run(fname, line, &i.path); |
2628 | if (r < 0) | |
2629 | return r; | |
2630 | ||
3f93da98 | 2631 | switch (i.type) { |
468d726b | 2632 | |
777b87e7 | 2633 | case CREATE_DIRECTORY: |
d7b8eec7 | 2634 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
2635 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
2636 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
df8dee85 | 2637 | case EMPTY_DIRECTORY: |
777b87e7 MS |
2638 | case TRUNCATE_DIRECTORY: |
2639 | case CREATE_FIFO: | |
2640 | case IGNORE_PATH: | |
78a92a5a | 2641 | case IGNORE_DIRECTORY_PATH: |
777b87e7 MS |
2642 | case REMOVE_PATH: |
2643 | case RECURSIVE_REMOVE_PATH: | |
e73a03e0 | 2644 | case ADJUST_MODE: |
777b87e7 MS |
2645 | case RELABEL_PATH: |
2646 | case RECURSIVE_RELABEL_PATH: | |
c82500c6 | 2647 | if (i.argument) |
d02933fd | 2648 | log_syntax(NULL, LOG_WARNING, fname, line, 0, "%c lines don't take argument fields, ignoring.", i.type); |
c82500c6 LP |
2649 | |
2650 | break; | |
2651 | ||
2652 | case CREATE_FILE: | |
2653 | case TRUNCATE_FILE: | |
777b87e7 | 2654 | break; |
468d726b LP |
2655 | |
2656 | case CREATE_SYMLINK: | |
3f93da98 | 2657 | if (!i.argument) { |
b910cc72 | 2658 | i.argument = path_join("/usr/share/factory", i.path); |
3f93da98 | 2659 | if (!i.argument) |
2f3b873a | 2660 | return log_oom(); |
468d726b LP |
2661 | } |
2662 | break; | |
2663 | ||
31ed59c5 | 2664 | case WRITE_FILE: |
3f93da98 | 2665 | if (!i.argument) { |
d9daae55 | 2666 | *invalid_config = true; |
d02933fd | 2667 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Write file requires argument."); |
31ed59c5 LP |
2668 | } |
2669 | break; | |
2670 | ||
849958d1 | 2671 | case COPY_FILES: |
3f93da98 | 2672 | if (!i.argument) { |
7dc6477d | 2673 | i.argument = path_join("/usr/share/factory", i.path); |
3f93da98 | 2674 | if (!i.argument) |
2f3b873a | 2675 | return log_oom(); |
626f8d16 | 2676 | |
3f93da98 | 2677 | } else if (!path_is_absolute(i.argument)) { |
d9daae55 | 2678 | *invalid_config = true; |
d02933fd | 2679 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Source path '%s' is not absolute.", i.argument); |
626f8d16 | 2680 | |
7dc6477d LP |
2681 | } |
2682 | ||
2683 | if (!empty_or_root(arg_root)) { | |
626f8d16 ZJS |
2684 | char *p; |
2685 | ||
d34cd571 | 2686 | p = path_join(arg_root, i.argument); |
626f8d16 ZJS |
2687 | if (!p) |
2688 | return log_oom(); | |
2689 | free_and_replace(i.argument, p); | |
849958d1 LP |
2690 | } |
2691 | ||
858d36c1 | 2692 | path_simplify(i.argument, false); |
849958d1 LP |
2693 | break; |
2694 | ||
468d726b | 2695 | case CREATE_CHAR_DEVICE: |
3a47c40d | 2696 | case CREATE_BLOCK_DEVICE: |
3f93da98 | 2697 | if (!i.argument) { |
d9daae55 | 2698 | *invalid_config = true; |
d02933fd | 2699 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Device file requires argument."); |
468d726b LP |
2700 | } |
2701 | ||
3a47c40d LP |
2702 | r = parse_dev(i.argument, &i.major_minor); |
2703 | if (r < 0) { | |
d9daae55 | 2704 | *invalid_config = true; |
d02933fd | 2705 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Can't parse device file major/minor '%s'.", i.argument); |
468d726b LP |
2706 | } |
2707 | ||
468d726b | 2708 | break; |
468d726b | 2709 | |
ebf4e801 | 2710 | case SET_XATTR: |
b705ab6a | 2711 | case RECURSIVE_SET_XATTR: |
3f93da98 | 2712 | if (!i.argument) { |
d9daae55 | 2713 | *invalid_config = true; |
d02933fd LP |
2714 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
2715 | "Set extended attribute requires argument."); | |
ebf4e801 | 2716 | } |
bd550f78 | 2717 | r = parse_xattrs_from_arg(&i); |
ebf4e801 MW |
2718 | if (r < 0) |
2719 | return r; | |
2720 | break; | |
2721 | ||
f8eeeaf9 | 2722 | case SET_ACL: |
b705ab6a | 2723 | case RECURSIVE_SET_ACL: |
f8eeeaf9 | 2724 | if (!i.argument) { |
d9daae55 | 2725 | *invalid_config = true; |
d02933fd LP |
2726 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
2727 | "Set ACLs requires argument."); | |
f8eeeaf9 | 2728 | } |
bd550f78 | 2729 | r = parse_acls_from_arg(&i); |
f8eeeaf9 ZJS |
2730 | if (r < 0) |
2731 | return r; | |
2732 | break; | |
2733 | ||
88ec4dfa LP |
2734 | case SET_ATTRIBUTE: |
2735 | case RECURSIVE_SET_ATTRIBUTE: | |
22c3a6ca | 2736 | if (!i.argument) { |
d9daae55 | 2737 | *invalid_config = true; |
d02933fd LP |
2738 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
2739 | "Set file attribute requires argument."); | |
22c3a6ca | 2740 | } |
bd550f78 | 2741 | r = parse_attribute_from_arg(&i); |
751223fe | 2742 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
d9daae55 | 2743 | *invalid_config = true; |
22c3a6ca GB |
2744 | if (r < 0) |
2745 | return r; | |
2746 | break; | |
2747 | ||
777b87e7 | 2748 | default: |
d9daae55 | 2749 | *invalid_config = true; |
d02933fd LP |
2750 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
2751 | "Unknown command type '%c'.", (char) i.type); | |
3b63d2d3 | 2752 | } |
468d726b | 2753 | |
3f93da98 | 2754 | if (!path_is_absolute(i.path)) { |
d9daae55 | 2755 | *invalid_config = true; |
d02933fd LP |
2756 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
2757 | "Path '%s' not absolute.", i.path); | |
3b63d2d3 LP |
2758 | } |
2759 | ||
858d36c1 | 2760 | path_simplify(i.path, false); |
3b63d2d3 | 2761 | |
3f93da98 | 2762 | if (!should_include_path(i.path)) |
7f2c1f4d | 2763 | return 0; |
5008d581 | 2764 | |
4cef1923 | 2765 | r = specifier_expansion_from_arg(&i); |
5a8575ef | 2766 | if (r == -ENXIO) |
4cef1923 | 2767 | return log_unresolvable_specifier(fname, line); |
751223fe ZJS |
2768 | if (r < 0) { |
2769 | if (IN_SET(r, -EINVAL, -EBADSLT)) | |
2770 | *invalid_config = true; | |
d02933fd | 2771 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to substitute specifiers in argument: %m"); |
751223fe | 2772 | } |
4cef1923 | 2773 | |
7dc6477d | 2774 | if (!empty_or_root(arg_root)) { |
cde684a2 LP |
2775 | char *p; |
2776 | ||
c6134d3e | 2777 | p = path_join(arg_root, i.path); |
cf9a4abd MM |
2778 | if (!p) |
2779 | return log_oom(); | |
81fa4479 | 2780 | free_and_replace(i.path, p); |
cf9a4abd MM |
2781 | } |
2782 | ||
e7b88b7b | 2783 | if (!empty_or_dash(user)) { |
a3451c2c | 2784 | r = find_uid(user, &i.uid, uid_cache); |
4b67834e | 2785 | if (r < 0) { |
d9daae55 | 2786 | *invalid_config = true; |
d02933fd | 2787 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to resolve user '%s': %m", user); |
3b63d2d3 LP |
2788 | } |
2789 | ||
3f93da98 | 2790 | i.uid_set = true; |
3b63d2d3 LP |
2791 | } |
2792 | ||
e7b88b7b | 2793 | if (!empty_or_dash(group)) { |
a3451c2c | 2794 | r = find_gid(group, &i.gid, gid_cache); |
4b67834e | 2795 | if (r < 0) { |
d9daae55 | 2796 | *invalid_config = true; |
d02933fd | 2797 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to resolve group '%s'.", group); |
3b63d2d3 LP |
2798 | } |
2799 | ||
3f93da98 | 2800 | i.gid_set = true; |
3b63d2d3 LP |
2801 | } |
2802 | ||
e7b88b7b | 2803 | if (!empty_or_dash(mode)) { |
abef3f91 | 2804 | const char *mm = mode; |
3b63d2d3 LP |
2805 | unsigned m; |
2806 | ||
abef3f91 | 2807 | if (*mm == '~') { |
3f93da98 | 2808 | i.mask_perms = true; |
abef3f91 LP |
2809 | mm++; |
2810 | } | |
2811 | ||
d02933fd LP |
2812 | r = parse_mode(mm, &m); |
2813 | if (r < 0) { | |
d9daae55 | 2814 | *invalid_config = true; |
d02933fd | 2815 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Invalid mode '%s'.", mode); |
3b63d2d3 LP |
2816 | } |
2817 | ||
3f93da98 ZJS |
2818 | i.mode = m; |
2819 | i.mode_set = true; | |
3b63d2d3 | 2820 | } else |
5fb13eb5 | 2821 | i.mode = IN_SET(i.type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA) ? 0755 : 0644; |
3b63d2d3 | 2822 | |
e7b88b7b | 2823 | if (!empty_or_dash(age)) { |
24f3a374 LP |
2824 | const char *a = age; |
2825 | ||
2826 | if (*a == '~') { | |
3f93da98 | 2827 | i.keep_first_level = true; |
24f3a374 LP |
2828 | a++; |
2829 | } | |
2830 | ||
d02933fd LP |
2831 | r = parse_sec(a, &i.age); |
2832 | if (r < 0) { | |
d9daae55 | 2833 | *invalid_config = true; |
d02933fd | 2834 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Invalid age '%s'.", age); |
3b63d2d3 LP |
2835 | } |
2836 | ||
3f93da98 | 2837 | i.age_set = true; |
3b63d2d3 LP |
2838 | } |
2839 | ||
3f93da98 | 2840 | h = needs_glob(i.type) ? globs : items; |
bfe95f35 | 2841 | |
ef43a391 | 2842 | existing = ordered_hashmap_get(h, i.path); |
468d726b | 2843 | if (existing) { |
96d10d78 | 2844 | size_t n; |
3f93da98 | 2845 | |
96d10d78 | 2846 | for (n = 0; n < existing->n_items; n++) { |
d0ea5c5e | 2847 | if (!item_compatible(existing->items + n, &i) && !i.append_or_force) { |
d02933fd | 2848 | log_syntax(NULL, LOG_NOTICE, fname, line, 0, "Duplicate line for path \"%s\", ignoring.", i.path); |
6487ada8 MP |
2849 | return 0; |
2850 | } | |
ebf4e801 MW |
2851 | } |
2852 | } else { | |
3f93da98 | 2853 | existing = new0(ItemArray, 1); |
07982ed1 LP |
2854 | if (!existing) |
2855 | return log_oom(); | |
2856 | ||
ef43a391 | 2857 | r = ordered_hashmap_put(h, i.path, existing); |
ccd114f0 LP |
2858 | if (r < 0) { |
2859 | free(existing); | |
3f93da98 | 2860 | return log_oom(); |
ccd114f0 | 2861 | } |
bfe95f35 LP |
2862 | } |
2863 | ||
96d10d78 | 2864 | if (!GREEDY_REALLOC(existing->items, existing->allocated, existing->n_items + 1)) |
3f93da98 | 2865 | return log_oom(); |
5008d581 | 2866 | |
7ab7529d LP |
2867 | existing->items[existing->n_items++] = i; |
2868 | i = (struct Item) {}; | |
dd449aca ZJS |
2869 | |
2870 | /* Sort item array, to enforce stable ordering of application */ | |
96d10d78 | 2871 | typesafe_qsort(existing->items, existing->n_items, item_compare); |
17493fa5 | 2872 | |
7f2c1f4d | 2873 | return 0; |
5008d581 LP |
2874 | } |
2875 | ||
ceaaeb9b ZJS |
2876 | static int cat_config(char **config_dirs, char **args) { |
2877 | _cleanup_strv_free_ char **files = NULL; | |
2878 | int r; | |
2879 | ||
2880 | r = conf_files_list_with_replacement(arg_root, config_dirs, arg_replace, &files, NULL); | |
2881 | if (r < 0) | |
2882 | return r; | |
2883 | ||
2884 | return cat_files(NULL, files, 0); | |
2885 | } | |
2886 | ||
dd04fb32 LP |
2887 | static int exclude_default_prefixes(void) { |
2888 | int r; | |
2889 | ||
2890 | /* Provide an easy way to exclude virtual/memory file systems from what we do here. Useful in | |
2891 | * combination with --root= where we probably don't want to apply stuff to these dirs as they are | |
2892 | * likely over-mounted if the root directory is actually used, and it wouldbe less than ideal to have | |
2893 | * all kinds of files created/adjusted underneath these mount points. */ | |
2894 | ||
2895 | r = strv_extend_strv( | |
2896 | &arg_exclude_prefixes, | |
2897 | STRV_MAKE("/dev", | |
2898 | "/proc", | |
2899 | "/run", | |
2900 | "/sys"), | |
2901 | true); | |
2902 | if (r < 0) | |
2903 | return log_oom(); | |
2904 | ||
2905 | return 0; | |
2906 | } | |
2907 | ||
37ec0fdd LP |
2908 | static int help(void) { |
2909 | _cleanup_free_ char *link = NULL; | |
2910 | int r; | |
2911 | ||
2912 | r = terminal_urlify_man("systemd-tmpfiles", "8", &link); | |
2913 | if (r < 0) | |
2914 | return log_oom(); | |
2915 | ||
522d4a49 LP |
2916 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
2917 | "Creates, deletes and cleans up volatile and temporary files and directories.\n\n" | |
5c795114 | 2918 | " -h --help Show this help\n" |
f2b5ca0e | 2919 | " --user Execute user configuration\n" |
eb9da376 | 2920 | " --version Show package version\n" |
ceaaeb9b | 2921 | " --cat-config Show configuration files\n" |
5c795114 DR |
2922 | " --create Create marked files/directories\n" |
2923 | " --clean Clean up marked directories\n" | |
2924 | " --remove Remove marked files/directories\n" | |
81815651 | 2925 | " --boot Execute actions only safe at boot\n" |
79ca888f ZJS |
2926 | " --prefix=PATH Only apply rules with the specified prefix\n" |
2927 | " --exclude-prefix=PATH Ignore rules with the specified prefix\n" | |
dd04fb32 | 2928 | " -E Ignore rules prefixed with /dev, /proc, /run, /sys\n" |
d9daae55 | 2929 | " --root=PATH Operate on an alternate filesystem root\n" |
a6d8474f | 2930 | " --replace=PATH Treat arguments as replacement for PATH\n" |
dcd5c891 | 2931 | " --no-pager Do not pipe output into a pager\n" |
37ec0fdd LP |
2932 | "\nSee the %s for details.\n" |
2933 | , program_invocation_short_name | |
2934 | , link | |
2935 | ); | |
2936 | ||
2937 | return 0; | |
3b63d2d3 LP |
2938 | } |
2939 | ||
2940 | static int parse_argv(int argc, char *argv[]) { | |
2941 | ||
2942 | enum { | |
eb9da376 | 2943 | ARG_VERSION = 0x100, |
ceaaeb9b | 2944 | ARG_CAT_CONFIG, |
f2b5ca0e | 2945 | ARG_USER, |
3b63d2d3 LP |
2946 | ARG_CREATE, |
2947 | ARG_CLEAN, | |
fba6e687 | 2948 | ARG_REMOVE, |
81815651 | 2949 | ARG_BOOT, |
5c795114 DR |
2950 | ARG_PREFIX, |
2951 | ARG_EXCLUDE_PREFIX, | |
cf9a4abd | 2952 | ARG_ROOT, |
a6d8474f | 2953 | ARG_REPLACE, |
dcd5c891 | 2954 | ARG_NO_PAGER, |
3b63d2d3 LP |
2955 | }; |
2956 | ||
2957 | static const struct option options[] = { | |
5c795114 | 2958 | { "help", no_argument, NULL, 'h' }, |
f2b5ca0e | 2959 | { "user", no_argument, NULL, ARG_USER }, |
eb9da376 | 2960 | { "version", no_argument, NULL, ARG_VERSION }, |
ceaaeb9b | 2961 | { "cat-config", no_argument, NULL, ARG_CAT_CONFIG }, |
5c795114 DR |
2962 | { "create", no_argument, NULL, ARG_CREATE }, |
2963 | { "clean", no_argument, NULL, ARG_CLEAN }, | |
2964 | { "remove", no_argument, NULL, ARG_REMOVE }, | |
81815651 | 2965 | { "boot", no_argument, NULL, ARG_BOOT }, |
5c795114 DR |
2966 | { "prefix", required_argument, NULL, ARG_PREFIX }, |
2967 | { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX }, | |
cf9a4abd | 2968 | { "root", required_argument, NULL, ARG_ROOT }, |
a6d8474f | 2969 | { "replace", required_argument, NULL, ARG_REPLACE }, |
dcd5c891 | 2970 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, |
eb9da376 | 2971 | {} |
3b63d2d3 LP |
2972 | }; |
2973 | ||
0f474365 | 2974 | int c, r; |
3b63d2d3 LP |
2975 | |
2976 | assert(argc >= 0); | |
2977 | assert(argv); | |
2978 | ||
dd04fb32 | 2979 | while ((c = getopt_long(argc, argv, "hE", options, NULL)) >= 0) |
3b63d2d3 LP |
2980 | |
2981 | switch (c) { | |
2982 | ||
2983 | case 'h': | |
37ec0fdd | 2984 | return help(); |
eb9da376 LP |
2985 | |
2986 | case ARG_VERSION: | |
3f6fd1ba | 2987 | return version(); |
3b63d2d3 | 2988 | |
ceaaeb9b ZJS |
2989 | case ARG_CAT_CONFIG: |
2990 | arg_cat_config = true; | |
2991 | break; | |
2992 | ||
f2b5ca0e ZJS |
2993 | case ARG_USER: |
2994 | arg_user = true; | |
2995 | break; | |
2996 | ||
3b63d2d3 | 2997 | case ARG_CREATE: |
1a967b6b | 2998 | arg_operation |= OPERATION_CREATE; |
3b63d2d3 LP |
2999 | break; |
3000 | ||
3001 | case ARG_CLEAN: | |
1a967b6b | 3002 | arg_operation |= OPERATION_CLEAN; |
3b63d2d3 LP |
3003 | break; |
3004 | ||
3005 | case ARG_REMOVE: | |
1a967b6b | 3006 | arg_operation |= OPERATION_REMOVE; |
3b63d2d3 LP |
3007 | break; |
3008 | ||
81815651 ZJS |
3009 | case ARG_BOOT: |
3010 | arg_boot = true; | |
c4708f13 ZJS |
3011 | break; |
3012 | ||
fba6e687 | 3013 | case ARG_PREFIX: |
7bc040fa | 3014 | if (strv_push(&arg_include_prefixes, optarg) < 0) |
a2aced4a | 3015 | return log_oom(); |
fba6e687 LP |
3016 | break; |
3017 | ||
5c795114 | 3018 | case ARG_EXCLUDE_PREFIX: |
7bc040fa | 3019 | if (strv_push(&arg_exclude_prefixes, optarg) < 0) |
5c795114 DR |
3020 | return log_oom(); |
3021 | break; | |
3022 | ||
dd04fb32 LP |
3023 | case 'E': |
3024 | r = exclude_default_prefixes(); | |
3025 | if (r < 0) | |
3026 | return r; | |
3027 | ||
3028 | break; | |
3029 | ||
cf9a4abd | 3030 | case ARG_ROOT: |
7dc6477d | 3031 | r = parse_path_argument_and_warn(optarg, /* suppress_root= */ false, &arg_root); |
0f474365 | 3032 | if (r < 0) |
0f03c2a4 | 3033 | return r; |
cf9a4abd MM |
3034 | break; |
3035 | ||
a6d8474f ZJS |
3036 | case ARG_REPLACE: |
3037 | if (!path_is_absolute(optarg) || | |
baaa35ad ZJS |
3038 | !endswith(optarg, ".conf")) |
3039 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3040 | "The argument to --replace= must an absolute path to a config file"); | |
a6d8474f ZJS |
3041 | |
3042 | arg_replace = optarg; | |
3043 | break; | |
3044 | ||
dcd5c891 | 3045 | case ARG_NO_PAGER: |
0221d68a | 3046 | arg_pager_flags |= PAGER_DISABLE; |
dcd5c891 LP |
3047 | break; |
3048 | ||
3b63d2d3 LP |
3049 | case '?': |
3050 | return -EINVAL; | |
3051 | ||
3052 | default: | |
eb9da376 | 3053 | assert_not_reached("Unhandled option"); |
3b63d2d3 | 3054 | } |
3b63d2d3 | 3055 | |
baaa35ad ZJS |
3056 | if (arg_operation == 0 && !arg_cat_config) |
3057 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3058 | "You need to specify at least one of --clean, --create or --remove."); | |
3b63d2d3 | 3059 | |
baaa35ad ZJS |
3060 | if (arg_replace && arg_cat_config) |
3061 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3062 | "Option --replace= is not supported with --cat-config"); | |
ceaaeb9b | 3063 | |
baaa35ad ZJS |
3064 | if (arg_replace && optind >= argc) |
3065 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3066 | "When --replace= is given, some configuration items must be specified"); | |
a6d8474f | 3067 | |
b63aacaa LP |
3068 | if (arg_root && arg_user) |
3069 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
3070 | "Combination of --user and --root= is not supported."); | |
3071 | ||
3b63d2d3 LP |
3072 | return 1; |
3073 | } | |
3074 | ||
a6d8474f | 3075 | static int read_config_file(char **config_dirs, const char *fn, bool ignore_enoent, bool *invalid_config) { |
a3451c2c | 3076 | _cleanup_(hashmap_freep) Hashmap *uid_cache = NULL, *gid_cache = NULL; |
f7ac1ed2 | 3077 | _cleanup_fclose_ FILE *_f = NULL; |
78a92a5a | 3078 | Iterator iterator; |
1731e34a | 3079 | unsigned v = 0; |
2a98ae4a | 3080 | FILE *f; |
78a92a5a | 3081 | Item *i; |
4e68ec18 | 3082 | int r = 0; |
fba6e687 LP |
3083 | |
3084 | assert(fn); | |
3085 | ||
f7ac1ed2 | 3086 | if (streq(fn, "-")) { |
a6d8474f | 3087 | log_debug("Reading config from stdin…"); |
f7ac1ed2 ZJS |
3088 | fn = "<stdin>"; |
3089 | f = stdin; | |
3090 | } else { | |
a6d8474f | 3091 | r = search_and_fopen(fn, "re", arg_root, (const char**) config_dirs, &_f); |
f7ac1ed2 ZJS |
3092 | if (r < 0) { |
3093 | if (ignore_enoent && r == -ENOENT) { | |
3094 | log_debug_errno(r, "Failed to open \"%s\", ignoring: %m", fn); | |
3095 | return 0; | |
3096 | } | |
fba6e687 | 3097 | |
f7ac1ed2 ZJS |
3098 | return log_error_errno(r, "Failed to open '%s': %m", fn); |
3099 | } | |
a6d8474f | 3100 | log_debug("Reading config file \"%s\"…", fn); |
f7ac1ed2 | 3101 | f = _f; |
fba6e687 LP |
3102 | } |
3103 | ||
2a98ae4a LP |
3104 | for (;;) { |
3105 | _cleanup_free_ char *line = NULL; | |
3106 | bool invalid_line = false; | |
1731e34a | 3107 | char *l; |
fba6e687 | 3108 | int k; |
2a98ae4a LP |
3109 | |
3110 | k = read_line(f, LONG_LINE_MAX, &line); | |
3111 | if (k < 0) | |
3112 | return log_error_errno(k, "Failed to read '%s': %m", fn); | |
3113 | if (k == 0) | |
3114 | break; | |
fba6e687 | 3115 | |
fba6e687 LP |
3116 | v++; |
3117 | ||
3118 | l = strstrip(line); | |
4c701096 | 3119 | if (IN_SET(*l, 0, '#')) |
fba6e687 LP |
3120 | continue; |
3121 | ||
a3451c2c | 3122 | k = parse_line(fn, v, l, &invalid_line, &uid_cache, &gid_cache); |
d9daae55 ZJS |
3123 | if (k < 0) { |
3124 | if (invalid_line) | |
3125 | /* Allow reporting with a special code if the caller requested this */ | |
3126 | *invalid_config = true; | |
3127 | else if (r == 0) | |
3128 | /* The first error becomes our return value */ | |
3129 | r = k; | |
3130 | } | |
fba6e687 LP |
3131 | } |
3132 | ||
78a92a5a | 3133 | /* we have to determine age parameter for each entry of type X */ |
ef43a391 | 3134 | ORDERED_HASHMAP_FOREACH(i, globs, iterator) { |
78a92a5a MS |
3135 | Iterator iter; |
3136 | Item *j, *candidate_item = NULL; | |
3137 | ||
3138 | if (i->type != IGNORE_DIRECTORY_PATH) | |
3139 | continue; | |
3140 | ||
ef43a391 | 3141 | ORDERED_HASHMAP_FOREACH(j, items, iter) { |
5fb13eb5 | 3142 | if (!IN_SET(j->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA)) |
78a92a5a MS |
3143 | continue; |
3144 | ||
3145 | if (path_equal(j->path, i->path)) { | |
3146 | candidate_item = j; | |
3147 | break; | |
3148 | } | |
3149 | ||
3150 | if ((!candidate_item && path_startswith(i->path, j->path)) || | |
3151 | (candidate_item && path_startswith(j->path, candidate_item->path) && (fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0))) | |
3152 | candidate_item = j; | |
3153 | } | |
3154 | ||
9ed2a35e | 3155 | if (candidate_item && candidate_item->age_set) { |
78a92a5a MS |
3156 | i->age = candidate_item->age; |
3157 | i->age_set = true; | |
3158 | } | |
3159 | } | |
3160 | ||
fba6e687 | 3161 | if (ferror(f)) { |
56f64d95 | 3162 | log_error_errno(errno, "Failed to read from file %s: %m", fn); |
fba6e687 LP |
3163 | if (r == 0) |
3164 | r = -EIO; | |
3165 | } | |
3166 | ||
fba6e687 LP |
3167 | return r; |
3168 | } | |
3169 | ||
a6d8474f ZJS |
3170 | static int parse_arguments(char **config_dirs, char **args, bool *invalid_config) { |
3171 | char **arg; | |
3172 | int r; | |
3173 | ||
3174 | STRV_FOREACH(arg, args) { | |
3175 | r = read_config_file(config_dirs, *arg, false, invalid_config); | |
3176 | if (r < 0) | |
3177 | return r; | |
3178 | } | |
3179 | ||
3180 | return 0; | |
3181 | } | |
3182 | ||
3183 | static int read_config_files(char **config_dirs, char **args, bool *invalid_config) { | |
3184 | _cleanup_strv_free_ char **files = NULL; | |
3185 | _cleanup_free_ char *p = NULL; | |
3186 | char **f; | |
3187 | int r; | |
3188 | ||
ceaaeb9b | 3189 | r = conf_files_list_with_replacement(arg_root, config_dirs, arg_replace, &files, &p); |
a6d8474f | 3190 | if (r < 0) |
ceaaeb9b | 3191 | return r; |
a6d8474f ZJS |
3192 | |
3193 | STRV_FOREACH(f, files) | |
3194 | if (p && path_equal(*f, p)) { | |
3195 | log_debug("Parsing arguments at position \"%s\"…", *f); | |
3196 | ||
3197 | r = parse_arguments(config_dirs, args, invalid_config); | |
3198 | if (r < 0) | |
3199 | return r; | |
3200 | } else | |
3201 | /* Just warn, ignore result otherwise. | |
3202 | * read_config_file() has some debug output, so no need to print anything. */ | |
3203 | (void) read_config_file(config_dirs, *f, true, invalid_config); | |
3204 | ||
3205 | return 0; | |
3206 | } | |
3207 | ||
811a1587 LP |
3208 | static int link_parent(ItemArray *a) { |
3209 | const char *path; | |
3210 | char *prefix; | |
3211 | int r; | |
3212 | ||
3213 | assert(a); | |
3214 | ||
09f467ac | 3215 | /* Finds the closest "parent" item array for the specified item array. Then registers the specified item array |
811a1587 LP |
3216 | * as child of it, and fills the parent in, linking them both ways. This allows us to later create parents |
3217 | * before their children, and clean up/remove children before their parents. */ | |
3218 | ||
3219 | if (a->n_items <= 0) | |
3220 | return 0; | |
3221 | ||
3222 | path = a->items[0].path; | |
6e9417f5 | 3223 | prefix = newa(char, strlen(path) + 1); |
811a1587 LP |
3224 | PATH_FOREACH_PREFIX(prefix, path) { |
3225 | ItemArray *j; | |
3226 | ||
3227 | j = ordered_hashmap_get(items, prefix); | |
bd0ce244 LP |
3228 | if (!j) |
3229 | j = ordered_hashmap_get(globs, prefix); | |
811a1587 | 3230 | if (j) { |
de7fef4b | 3231 | r = set_ensure_put(&j->children, NULL, a); |
811a1587 LP |
3232 | if (r < 0) |
3233 | return log_oom(); | |
3234 | ||
3235 | a->parent = j; | |
3236 | return 1; | |
3237 | } | |
3238 | } | |
3239 | ||
3240 | return 0; | |
3241 | } | |
3242 | ||
87938c3b YW |
3243 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(item_array_hash_ops, char, string_hash_func, string_compare_func, |
3244 | ItemArray, item_array_free); | |
3245 | ||
3246 | static int run(int argc, char *argv[]) { | |
f2b5ca0e | 3247 | _cleanup_strv_free_ char **config_dirs = NULL; |
d9daae55 | 3248 | bool invalid_config = false; |
64adb379 LP |
3249 | Iterator iterator; |
3250 | ItemArray *a; | |
44ac4f88 LP |
3251 | enum { |
3252 | PHASE_REMOVE_AND_CLEAN, | |
3253 | PHASE_CREATE, | |
3254 | _PHASE_MAX | |
3255 | } phase; | |
87938c3b | 3256 | int r, k; |
3b63d2d3 | 3257 | |
fdcad0c2 LP |
3258 | r = parse_argv(argc, argv); |
3259 | if (r <= 0) | |
87938c3b | 3260 | return r; |
5008d581 | 3261 | |
6bf3c61c | 3262 | log_setup_service(); |
5008d581 | 3263 | |
e5358401 LP |
3264 | /* Descending down file system trees might take a lot of fds */ |
3265 | (void) rlimit_nofile_bump(HIGH_RLIMIT_NOFILE); | |
3266 | ||
f2b5ca0e ZJS |
3267 | if (arg_user) { |
3268 | r = user_config_paths(&config_dirs); | |
87938c3b YW |
3269 | if (r < 0) |
3270 | return log_error_errno(r, "Failed to initialize configuration directory list: %m"); | |
f2b5ca0e ZJS |
3271 | } else { |
3272 | config_dirs = strv_split_nulstr(CONF_PATHS_NULSTR("tmpfiles.d")); | |
87938c3b YW |
3273 | if (!config_dirs) |
3274 | return log_oom(); | |
f2b5ca0e ZJS |
3275 | } |
3276 | ||
79c91cec | 3277 | if (DEBUG_LOGGING) { |
f2b5ca0e ZJS |
3278 | _cleanup_free_ char *t = NULL; |
3279 | ||
3280 | t = strv_join(config_dirs, "\n\t"); | |
3281 | if (t) | |
bb9947be | 3282 | log_debug("Looking for configuration files in (higher priority first):\n\t%s", t); |
f2b5ca0e ZJS |
3283 | } |
3284 | ||
ceaaeb9b | 3285 | if (arg_cat_config) { |
0221d68a | 3286 | (void) pager_open(arg_pager_flags); |
dcd5c891 | 3287 | |
87938c3b | 3288 | return cat_config(config_dirs, argv + optind); |
ceaaeb9b ZJS |
3289 | } |
3290 | ||
3291 | umask(0022); | |
3292 | ||
a9ba0e32 CG |
3293 | r = mac_selinux_init(); |
3294 | if (r < 0) | |
3295 | return r; | |
ceaaeb9b | 3296 | |
87938c3b YW |
3297 | items = ordered_hashmap_new(&item_array_hash_ops); |
3298 | globs = ordered_hashmap_new(&item_array_hash_ops); | |
3299 | if (!items || !globs) | |
3300 | return log_oom(); | |
ceaaeb9b | 3301 | |
a6d8474f ZJS |
3302 | /* If command line arguments are specified along with --replace, read all |
3303 | * configuration files and insert the positional arguments at the specified | |
3304 | * place. Otherwise, if command line arguments are specified, execute just | |
3305 | * them, and finally, without --replace= or any positional arguments, just | |
3306 | * read configuration and execute it. | |
3307 | */ | |
3308 | if (arg_replace || optind >= argc) | |
3309 | r = read_config_files(config_dirs, argv + optind, &invalid_config); | |
3310 | else | |
3311 | r = parse_arguments(config_dirs, argv + optind, &invalid_config); | |
3312 | if (r < 0) | |
87938c3b | 3313 | return r; |
5008d581 | 3314 | |
811a1587 | 3315 | /* Let's now link up all child/parent relationships */ |
ef43a391 | 3316 | ORDERED_HASHMAP_FOREACH(a, items, iterator) { |
811a1587 LP |
3317 | r = link_parent(a); |
3318 | if (r < 0) | |
87938c3b | 3319 | return r; |
1db50423 | 3320 | } |
ef43a391 | 3321 | ORDERED_HASHMAP_FOREACH(a, globs, iterator) { |
811a1587 LP |
3322 | r = link_parent(a); |
3323 | if (r < 0) | |
87938c3b | 3324 | return r; |
811a1587 LP |
3325 | } |
3326 | ||
64adb379 LP |
3327 | /* If multiple operations are requested, let's first run the remove/clean operations, and only then the create |
3328 | * operations. i.e. that we first clean out the platform we then build on. */ | |
44ac4f88 | 3329 | for (phase = 0; phase < _PHASE_MAX; phase++) { |
64adb379 | 3330 | OperationMask op; |
b8bb3e8f | 3331 | |
44ac4f88 | 3332 | if (phase == PHASE_REMOVE_AND_CLEAN) |
64adb379 | 3333 | op = arg_operation & (OPERATION_REMOVE|OPERATION_CLEAN); |
44ac4f88 | 3334 | else if (phase == PHASE_CREATE) |
64adb379 LP |
3335 | op = arg_operation & OPERATION_CREATE; |
3336 | else | |
3337 | assert_not_reached("unexpected phase"); | |
3338 | ||
3339 | if (op == 0) /* Nothing requested in this phase */ | |
3340 | continue; | |
3341 | ||
3342 | /* The non-globbing ones usually create things, hence we apply them first */ | |
3343 | ORDERED_HASHMAP_FOREACH(a, items, iterator) { | |
3344 | k = process_item_array(a, op); | |
87938c3b YW |
3345 | if (k < 0 && r >= 0) |
3346 | r = k; | |
64adb379 LP |
3347 | } |
3348 | ||
3349 | /* The globbing ones usually alter things, hence we apply them second. */ | |
3350 | ORDERED_HASHMAP_FOREACH(a, globs, iterator) { | |
3351 | k = process_item_array(a, op); | |
87938c3b YW |
3352 | if (k < 0 && r >= 0) |
3353 | r = k; | |
64adb379 | 3354 | } |
1db50423 | 3355 | } |
3b63d2d3 | 3356 | |
87938c3b YW |
3357 | if (ERRNO_IS_RESOURCE(-r)) |
3358 | return r; | |
3359 | if (invalid_config) | |
d9daae55 | 3360 | return EX_DATAERR; |
87938c3b | 3361 | if (r < 0) |
bb9947be | 3362 | return EX_CANTCREAT; |
87938c3b | 3363 | return 0; |
5008d581 | 3364 | } |
87938c3b YW |
3365 | |
3366 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |