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Commit | Line | Data |
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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> | |
7 | #include <glob.h> | |
5008d581 | 8 | #include <limits.h> |
3f6fd1ba LP |
9 | #include <linux/fs.h> |
10 | #include <stdbool.h> | |
11 | #include <stddef.h> | |
3b63d2d3 LP |
12 | #include <stdio.h> |
13 | #include <stdlib.h> | |
3f6fd1ba | 14 | #include <string.h> |
505ef0e3 | 15 | #include <sys/stat.h> |
ebf4e801 | 16 | #include <sys/xattr.h> |
d9daae55 | 17 | #include <sysexits.h> |
3f6fd1ba LP |
18 | #include <time.h> |
19 | #include <unistd.h> | |
5008d581 | 20 | |
5a8575ef ZJS |
21 | #include "sd-path.h" |
22 | ||
3f6fd1ba | 23 | #include "acl-util.h" |
b5efdb8a | 24 | #include "alloc-util.h" |
3f6fd1ba | 25 | #include "btrfs-util.h" |
430f0182 | 26 | #include "capability-util.h" |
c8b3094d | 27 | #include "chattr-util.h" |
3f6fd1ba LP |
28 | #include "conf-files.h" |
29 | #include "copy.h" | |
a0f29c76 | 30 | #include "def.h" |
8fb3f009 | 31 | #include "dirent-util.h" |
4f5dd394 | 32 | #include "escape.h" |
3ffd4af2 | 33 | #include "fd-util.h" |
0d39fa9c | 34 | #include "fileio.h" |
f97b34a6 | 35 | #include "format-util.h" |
f4f15635 | 36 | #include "fs-util.h" |
7d50b32a | 37 | #include "glob-util.h" |
c004493c | 38 | #include "io-util.h" |
3f6fd1ba | 39 | #include "label.h" |
5008d581 | 40 | #include "log.h" |
54693d9b | 41 | #include "macro.h" |
87938c3b | 42 | #include "main-func.h" |
d39efe74 | 43 | #include "missing.h" |
49e942b2 | 44 | #include "mkdir.h" |
049af8ad | 45 | #include "mountpoint-util.h" |
dcd5c891 | 46 | #include "pager.h" |
6bedfcbb | 47 | #include "parse-util.h" |
f2b5ca0e | 48 | #include "path-lookup.h" |
9eb977db | 49 | #include "path-util.h" |
294bf0c3 | 50 | #include "pretty-print.h" |
c6878637 | 51 | #include "rm-rf.h" |
d7b8eec7 | 52 | #include "selinux-util.h" |
3f6fd1ba LP |
53 | #include "set.h" |
54 | #include "specifier.h" | |
8fcde012 | 55 | #include "stat-util.h" |
15a5e950 | 56 | #include "stdio-util.h" |
8b43440b | 57 | #include "string-table.h" |
07630cea | 58 | #include "string-util.h" |
3f6fd1ba | 59 | #include "strv.h" |
affb60b1 | 60 | #include "umask-util.h" |
b1d4f8e1 | 61 | #include "user-util.h" |
3f6fd1ba | 62 | #include "util.h" |
5008d581 | 63 | |
01000479 | 64 | /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates |
5008d581 | 65 | * them in the file system. This is intended to be used to create |
db019b8d KS |
66 | * properly owned directories beneath /tmp, /var/tmp, /run, which are |
67 | * volatile and hence need to be recreated on bootup. */ | |
5008d581 | 68 | |
1a967b6b LP |
69 | typedef enum OperationMask { |
70 | OPERATION_CREATE = 1 << 0, | |
71 | OPERATION_REMOVE = 1 << 1, | |
72 | OPERATION_CLEAN = 1 << 2, | |
73 | } OperationMask; | |
74 | ||
66ccd038 | 75 | typedef enum ItemType { |
b8bb3e8f | 76 | /* These ones take file names */ |
3b63d2d3 LP |
77 | CREATE_FILE = 'f', |
78 | TRUNCATE_FILE = 'F', | |
79 | CREATE_DIRECTORY = 'd', | |
80 | TRUNCATE_DIRECTORY = 'D', | |
d7b8eec7 | 81 | CREATE_SUBVOLUME = 'v', |
5fb13eb5 LP |
82 | CREATE_SUBVOLUME_INHERIT_QUOTA = 'q', |
83 | CREATE_SUBVOLUME_NEW_QUOTA = 'Q', | |
ee17ee7c | 84 | CREATE_FIFO = 'p', |
468d726b LP |
85 | CREATE_SYMLINK = 'L', |
86 | CREATE_CHAR_DEVICE = 'c', | |
87 | CREATE_BLOCK_DEVICE = 'b', | |
849958d1 | 88 | COPY_FILES = 'C', |
b8bb3e8f LP |
89 | |
90 | /* These ones take globs */ | |
17493fa5 | 91 | WRITE_FILE = 'w', |
df8dee85 | 92 | EMPTY_DIRECTORY = 'e', |
b705ab6a ZJS |
93 | SET_XATTR = 't', |
94 | RECURSIVE_SET_XATTR = 'T', | |
95 | SET_ACL = 'a', | |
96 | RECURSIVE_SET_ACL = 'A', | |
17493fa5 LP |
97 | SET_ATTRIBUTE = 'h', |
98 | RECURSIVE_SET_ATTRIBUTE = 'H', | |
3b63d2d3 | 99 | IGNORE_PATH = 'x', |
78a92a5a | 100 | IGNORE_DIRECTORY_PATH = 'X', |
3b63d2d3 | 101 | REMOVE_PATH = 'r', |
a8d88783 | 102 | RECURSIVE_REMOVE_PATH = 'R', |
777b87e7 | 103 | RELABEL_PATH = 'z', |
e73a03e0 | 104 | RECURSIVE_RELABEL_PATH = 'Z', |
17493fa5 | 105 | ADJUST_MODE = 'm', /* legacy, 'z' is identical to this */ |
66ccd038 | 106 | } ItemType; |
3b63d2d3 LP |
107 | |
108 | typedef struct Item { | |
66ccd038 | 109 | ItemType type; |
3b63d2d3 LP |
110 | |
111 | char *path; | |
468d726b | 112 | char *argument; |
ebf4e801 | 113 | char **xattrs; |
349cc4a5 | 114 | #if HAVE_ACL |
f8eeeaf9 ZJS |
115 | acl_t acl_access; |
116 | acl_t acl_default; | |
117 | #endif | |
5008d581 LP |
118 | uid_t uid; |
119 | gid_t gid; | |
3b63d2d3 LP |
120 | mode_t mode; |
121 | usec_t age; | |
122 | ||
468d726b | 123 | dev_t major_minor; |
88ec4dfa LP |
124 | unsigned attribute_value; |
125 | unsigned attribute_mask; | |
468d726b | 126 | |
3b63d2d3 LP |
127 | bool uid_set:1; |
128 | bool gid_set:1; | |
129 | bool mode_set:1; | |
130 | bool age_set:1; | |
abef3f91 | 131 | bool mask_perms:1; |
88ec4dfa | 132 | bool attribute_set:1; |
24f3a374 LP |
133 | |
134 | bool keep_first_level:1; | |
1910cd0e | 135 | |
2e78fa79 LP |
136 | bool force:1; |
137 | ||
6d7b5433 WD |
138 | bool allow_failure:1; |
139 | ||
811a1587 | 140 | OperationMask done; |
3b63d2d3 LP |
141 | } Item; |
142 | ||
3f93da98 ZJS |
143 | typedef struct ItemArray { |
144 | Item *items; | |
96d10d78 | 145 | size_t n_items; |
64768714 | 146 | size_t allocated; |
811a1587 LP |
147 | |
148 | struct ItemArray *parent; | |
149 | Set *children; | |
3f93da98 ZJS |
150 | } ItemArray; |
151 | ||
5a8575ef | 152 | typedef enum DirectoryType { |
133bbca4 | 153 | DIRECTORY_RUNTIME, |
5a8575ef ZJS |
154 | DIRECTORY_STATE, |
155 | DIRECTORY_CACHE, | |
156 | DIRECTORY_LOGS, | |
157 | _DIRECTORY_TYPE_MAX, | |
158 | } DirectoryType; | |
159 | ||
ceaaeb9b | 160 | static bool arg_cat_config = false; |
f2b5ca0e | 161 | static bool arg_user = false; |
1a967b6b | 162 | static OperationMask arg_operation = 0; |
81815651 | 163 | static bool arg_boot = false; |
0221d68a | 164 | static PagerFlags arg_pager_flags = 0; |
3b63d2d3 | 165 | |
7bc040fa LP |
166 | static char **arg_include_prefixes = NULL; |
167 | static char **arg_exclude_prefixes = NULL; | |
cf9a4abd | 168 | static char *arg_root = NULL; |
a6d8474f | 169 | static char *arg_replace = NULL; |
fba6e687 | 170 | |
3b63d2d3 LP |
171 | #define MAX_DEPTH 256 |
172 | ||
ef43a391 | 173 | static OrderedHashmap *items = NULL, *globs = NULL; |
7bc040fa LP |
174 | static Set *unix_sockets = NULL; |
175 | ||
87938c3b YW |
176 | STATIC_DESTRUCTOR_REGISTER(items, ordered_hashmap_freep); |
177 | STATIC_DESTRUCTOR_REGISTER(globs, ordered_hashmap_freep); | |
178 | STATIC_DESTRUCTOR_REGISTER(unix_sockets, set_free_freep); | |
179 | STATIC_DESTRUCTOR_REGISTER(arg_include_prefixes, freep); | |
180 | STATIC_DESTRUCTOR_REGISTER(arg_exclude_prefixes, freep); | |
181 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); | |
182 | ||
303ee601 ZJS |
183 | static int specifier_machine_id_safe(char specifier, const void *data, const void *userdata, char **ret); |
184 | static int specifier_directory(char specifier, const void *data, const void *userdata, char **ret); | |
4cef1923 | 185 | |
bd550f78 | 186 | static const Specifier specifier_table[] = { |
4cef1923 | 187 | { 'm', specifier_machine_id_safe, NULL }, |
5a8575ef ZJS |
188 | { 'b', specifier_boot_id, NULL }, |
189 | { 'H', specifier_host_name, NULL }, | |
190 | { 'v', specifier_kernel_release, NULL }, | |
191 | ||
b75f0c69 DC |
192 | { 'g', specifier_group_name, NULL }, |
193 | { 'G', specifier_group_id, NULL }, | |
5a8575ef ZJS |
194 | { 'U', specifier_user_id, NULL }, |
195 | { 'u', specifier_user_name, NULL }, | |
196 | { 'h', specifier_user_home, NULL }, | |
b294e594 | 197 | |
5a8575ef ZJS |
198 | { 't', specifier_directory, UINT_TO_PTR(DIRECTORY_RUNTIME) }, |
199 | { 'S', specifier_directory, UINT_TO_PTR(DIRECTORY_STATE) }, | |
200 | { 'C', specifier_directory, UINT_TO_PTR(DIRECTORY_CACHE) }, | |
201 | { 'L', specifier_directory, UINT_TO_PTR(DIRECTORY_LOGS) }, | |
b294e594 LP |
202 | { 'T', specifier_tmp_dir, NULL }, |
203 | { 'V', specifier_var_tmp_dir, NULL }, | |
bd550f78 LP |
204 | {} |
205 | }; | |
206 | ||
303ee601 | 207 | static int specifier_machine_id_safe(char specifier, const void *data, const void *userdata, char **ret) { |
4cef1923 FB |
208 | int r; |
209 | ||
d8dab757 FB |
210 | /* If /etc/machine_id is missing or empty (e.g. in a chroot environment) |
211 | * return a recognizable error so that the caller can skip the rule | |
4cef1923 FB |
212 | * gracefully. */ |
213 | ||
214 | r = specifier_machine_id(specifier, data, userdata, ret); | |
d8dab757 | 215 | if (IN_SET(r, -ENOENT, -ENOMEDIUM)) |
5a8575ef | 216 | return -ENXIO; |
4cef1923 FB |
217 | |
218 | return r; | |
219 | } | |
220 | ||
303ee601 | 221 | static int specifier_directory(char specifier, const void *data, const void *userdata, char **ret) { |
5a8575ef ZJS |
222 | struct table_entry { |
223 | uint64_t type; | |
224 | const char *suffix; | |
225 | }; | |
226 | ||
227 | static const struct table_entry paths_system[] = { | |
228 | [DIRECTORY_RUNTIME] = { SD_PATH_SYSTEM_RUNTIME }, | |
229 | [DIRECTORY_STATE] = { SD_PATH_SYSTEM_STATE_PRIVATE }, | |
230 | [DIRECTORY_CACHE] = { SD_PATH_SYSTEM_STATE_CACHE }, | |
231 | [DIRECTORY_LOGS] = { SD_PATH_SYSTEM_STATE_LOGS }, | |
232 | }; | |
233 | ||
234 | static const struct table_entry paths_user[] = { | |
235 | [DIRECTORY_RUNTIME] = { SD_PATH_USER_RUNTIME }, | |
236 | [DIRECTORY_STATE] = { SD_PATH_USER_CONFIGURATION }, | |
237 | [DIRECTORY_CACHE] = { SD_PATH_USER_STATE_CACHE }, | |
238 | [DIRECTORY_LOGS] = { SD_PATH_USER_CONFIGURATION, "log" }, | |
239 | }; | |
240 | ||
241 | unsigned i; | |
242 | const struct table_entry *paths; | |
243 | ||
244 | assert_cc(ELEMENTSOF(paths_system) == ELEMENTSOF(paths_user)); | |
245 | paths = arg_user ? paths_user : paths_system; | |
246 | ||
247 | i = PTR_TO_UINT(data); | |
248 | assert(i < ELEMENTSOF(paths_system)); | |
249 | ||
250 | return sd_path_home(paths[i].type, paths[i].suffix, ret); | |
251 | } | |
252 | ||
4cef1923 FB |
253 | static int log_unresolvable_specifier(const char *filename, unsigned line) { |
254 | static bool notified = false; | |
255 | ||
5a8575ef ZJS |
256 | /* In system mode, this is called when /etc is not fully initialized (e.g. |
257 | * in a chroot environment) where some specifiers are unresolvable. In user | |
258 | * mode, this is called when some variables are not defined. These cases are | |
259 | * not considered as an error so log at LOG_NOTICE only for the first time | |
260 | * and then downgrade this to LOG_DEBUG for the rest. */ | |
4cef1923 FB |
261 | |
262 | log_full(notified ? LOG_DEBUG : LOG_NOTICE, | |
5a8575ef ZJS |
263 | "[%s:%u] Failed to resolve specifier: %s, skipping", |
264 | filename, line, | |
265 | arg_user ? "Required $XDG_... variable not defined" : "uninitialized /etc detected"); | |
4cef1923 FB |
266 | |
267 | if (!notified) | |
268 | log_notice("All rules containing unresolvable specifiers will be skipped."); | |
269 | ||
270 | notified = true; | |
271 | return 0; | |
272 | } | |
273 | ||
f2b5ca0e ZJS |
274 | static int user_config_paths(char*** ret) { |
275 | _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL; | |
276 | _cleanup_free_ char *persistent_config = NULL, *runtime_config = NULL, *data_home = NULL; | |
277 | _cleanup_strv_free_ char **res = NULL; | |
278 | int r; | |
279 | ||
280 | r = xdg_user_dirs(&config_dirs, &data_dirs); | |
281 | if (r < 0) | |
282 | return r; | |
283 | ||
284 | r = xdg_user_config_dir(&persistent_config, "/user-tmpfiles.d"); | |
285 | if (r < 0 && r != -ENXIO) | |
286 | return r; | |
287 | ||
288 | r = xdg_user_runtime_dir(&runtime_config, "/user-tmpfiles.d"); | |
289 | if (r < 0 && r != -ENXIO) | |
290 | return r; | |
291 | ||
292 | r = xdg_user_data_dir(&data_home, "/user-tmpfiles.d"); | |
293 | if (r < 0 && r != -ENXIO) | |
294 | return r; | |
295 | ||
296 | r = strv_extend_strv_concat(&res, config_dirs, "/user-tmpfiles.d"); | |
297 | if (r < 0) | |
298 | return r; | |
299 | ||
300 | r = strv_extend(&res, persistent_config); | |
301 | if (r < 0) | |
302 | return r; | |
303 | ||
304 | r = strv_extend(&res, runtime_config); | |
305 | if (r < 0) | |
306 | return r; | |
307 | ||
308 | r = strv_extend(&res, data_home); | |
309 | if (r < 0) | |
310 | return r; | |
311 | ||
312 | r = strv_extend_strv_concat(&res, data_dirs, "/user-tmpfiles.d"); | |
313 | if (r < 0) | |
314 | return r; | |
315 | ||
316 | r = path_strv_make_absolute_cwd(res); | |
317 | if (r < 0) | |
318 | return r; | |
319 | ||
ae2a15bc | 320 | *ret = TAKE_PTR(res); |
f2b5ca0e ZJS |
321 | return 0; |
322 | } | |
323 | ||
66ccd038 | 324 | static bool needs_glob(ItemType t) { |
cde684a2 LP |
325 | return IN_SET(t, |
326 | WRITE_FILE, | |
327 | IGNORE_PATH, | |
328 | IGNORE_DIRECTORY_PATH, | |
329 | REMOVE_PATH, | |
330 | RECURSIVE_REMOVE_PATH, | |
df8dee85 | 331 | EMPTY_DIRECTORY, |
e73a03e0 | 332 | ADJUST_MODE, |
cde684a2 | 333 | RELABEL_PATH, |
b705ab6a ZJS |
334 | RECURSIVE_RELABEL_PATH, |
335 | SET_XATTR, | |
336 | RECURSIVE_SET_XATTR, | |
337 | SET_ACL, | |
34f64536 LP |
338 | RECURSIVE_SET_ACL, |
339 | SET_ATTRIBUTE, | |
340 | RECURSIVE_SET_ATTRIBUTE); | |
b8bb3e8f LP |
341 | } |
342 | ||
3f93da98 ZJS |
343 | static bool takes_ownership(ItemType t) { |
344 | return IN_SET(t, | |
345 | CREATE_FILE, | |
346 | TRUNCATE_FILE, | |
347 | CREATE_DIRECTORY, | |
df8dee85 | 348 | EMPTY_DIRECTORY, |
3f93da98 ZJS |
349 | TRUNCATE_DIRECTORY, |
350 | CREATE_SUBVOLUME, | |
5fb13eb5 LP |
351 | CREATE_SUBVOLUME_INHERIT_QUOTA, |
352 | CREATE_SUBVOLUME_NEW_QUOTA, | |
3f93da98 ZJS |
353 | CREATE_FIFO, |
354 | CREATE_SYMLINK, | |
355 | CREATE_CHAR_DEVICE, | |
356 | CREATE_BLOCK_DEVICE, | |
357 | COPY_FILES, | |
3f93da98 ZJS |
358 | WRITE_FILE, |
359 | IGNORE_PATH, | |
360 | IGNORE_DIRECTORY_PATH, | |
361 | REMOVE_PATH, | |
362 | RECURSIVE_REMOVE_PATH); | |
363 | } | |
364 | ||
ef43a391 | 365 | static struct Item* find_glob(OrderedHashmap *h, const char *match) { |
3f93da98 | 366 | ItemArray *j; |
b8bb3e8f LP |
367 | Iterator i; |
368 | ||
ef43a391 | 369 | ORDERED_HASHMAP_FOREACH(j, h, i) { |
96d10d78 | 370 | size_t n; |
3f93da98 | 371 | |
96d10d78 | 372 | for (n = 0; n < j->n_items; n++) { |
3f93da98 ZJS |
373 | Item *item = j->items + n; |
374 | ||
375 | if (fnmatch(item->path, match, FNM_PATHNAME|FNM_PERIOD) == 0) | |
376 | return item; | |
377 | } | |
378 | } | |
b8bb3e8f LP |
379 | |
380 | return NULL; | |
381 | } | |
382 | ||
71a0be76 YW |
383 | static int load_unix_sockets(void) { |
384 | _cleanup_set_free_free_ Set *sockets = NULL; | |
7fd1b19b | 385 | _cleanup_fclose_ FILE *f = NULL; |
f1ff734f | 386 | int r; |
17b90525 LP |
387 | |
388 | if (unix_sockets) | |
71a0be76 | 389 | return 0; |
17b90525 | 390 | |
f1ff734f | 391 | /* We maintain a cache of the sockets we found in /proc/net/unix to speed things up a little. */ |
17b90525 | 392 | |
71a0be76 YW |
393 | sockets = set_new(&path_hash_ops); |
394 | if (!sockets) | |
395 | return log_oom(); | |
17b90525 | 396 | |
fdcad0c2 | 397 | f = fopen("/proc/net/unix", "re"); |
71a0be76 YW |
398 | if (!f) |
399 | return log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_WARNING, errno, | |
400 | "Failed to open /proc/net/unix, ignoring: %m"); | |
17b90525 | 401 | |
fdcad0c2 | 402 | /* Skip header */ |
f1ff734f | 403 | r = read_line(f, LONG_LINE_MAX, NULL); |
71a0be76 YW |
404 | if (r < 0) |
405 | return log_warning_errno(r, "Failed to skip /proc/net/unix header line: %m"); | |
406 | if (r == 0) | |
407 | return log_warning_errno(SYNTHETIC_ERRNO(EIO), "Premature end of file reading /proc/net/unix."); | |
17b90525 LP |
408 | |
409 | for (;;) { | |
71a0be76 YW |
410 | _cleanup_free_ char *line = NULL, *s = NULL; |
411 | char *p; | |
17b90525 | 412 | |
f1ff734f | 413 | r = read_line(f, LONG_LINE_MAX, &line); |
71a0be76 YW |
414 | if (r < 0) |
415 | return log_warning_errno(r, "Failed to read /proc/net/unix line, ignoring: %m"); | |
f1ff734f | 416 | if (r == 0) /* EOF */ |
17b90525 LP |
417 | break; |
418 | ||
fdcad0c2 LP |
419 | p = strchr(line, ':'); |
420 | if (!p) | |
421 | continue; | |
422 | ||
423 | if (strlen(p) < 37) | |
17b90525 LP |
424 | continue; |
425 | ||
fdcad0c2 | 426 | p += 37; |
17b90525 | 427 | p += strspn(p, WHITESPACE); |
fdcad0c2 | 428 | p += strcspn(p, WHITESPACE); /* skip one more word */ |
17b90525 LP |
429 | p += strspn(p, WHITESPACE); |
430 | ||
431 | if (*p != '/') | |
432 | continue; | |
433 | ||
fdcad0c2 | 434 | s = strdup(p); |
71a0be76 YW |
435 | if (!s) |
436 | return log_oom(); | |
17b90525 | 437 | |
858d36c1 | 438 | path_simplify(s, false); |
4ff21d85 | 439 | |
71a0be76 YW |
440 | r = set_consume(sockets, s); |
441 | if (r == -EEXIST) | |
442 | continue; | |
443 | if (r < 0) | |
444 | return log_warning_errno(r, "Failed to add AF_UNIX socket to set, ignoring: %m"); | |
17b90525 | 445 | |
71a0be76 YW |
446 | TAKE_PTR(s); |
447 | } | |
17b90525 | 448 | |
71a0be76 YW |
449 | unix_sockets = TAKE_PTR(sockets); |
450 | return 1; | |
17b90525 LP |
451 | } |
452 | ||
453 | static bool unix_socket_alive(const char *fn) { | |
454 | assert(fn); | |
455 | ||
71a0be76 YW |
456 | if (load_unix_sockets() < 0) |
457 | return true; /* We don't know, so assume yes */ | |
17b90525 | 458 | |
71a0be76 | 459 | return !!set_get(unix_sockets, (char*) fn); |
17b90525 LP |
460 | } |
461 | ||
99d680ac | 462 | static int dir_is_mount_point(DIR *d, const char *subdir) { |
cde684a2 | 463 | |
99d680ac KS |
464 | int mount_id_parent, mount_id; |
465 | int r_p, r; | |
466 | ||
cbfb8679 | 467 | r_p = name_to_handle_at_loop(dirfd(d), ".", NULL, &mount_id_parent, 0); |
99d680ac KS |
468 | if (r_p < 0) |
469 | r_p = -errno; | |
470 | ||
cbfb8679 | 471 | r = name_to_handle_at_loop(dirfd(d), subdir, NULL, &mount_id, 0); |
99d680ac KS |
472 | if (r < 0) |
473 | r = -errno; | |
474 | ||
475 | /* got no handle; make no assumptions, return error */ | |
476 | if (r_p < 0 && r < 0) | |
477 | return r_p; | |
478 | ||
479 | /* got both handles; if they differ, it is a mount point */ | |
480 | if (r_p >= 0 && r >= 0) | |
481 | return mount_id_parent != mount_id; | |
482 | ||
483 | /* got only one handle; assume different mount points if one | |
484 | * of both queries was not supported by the filesystem */ | |
4c701096 | 485 | if (IN_SET(r_p, -ENOSYS, -EOPNOTSUPP) || IN_SET(r, -ENOSYS, -EOPNOTSUPP)) |
99d680ac KS |
486 | return true; |
487 | ||
488 | /* return error */ | |
489 | if (r_p < 0) | |
490 | return r_p; | |
491 | return r; | |
492 | } | |
493 | ||
df99a9ef ZJS |
494 | static DIR* xopendirat_nomod(int dirfd, const char *path) { |
495 | DIR *dir; | |
496 | ||
497 | dir = xopendirat(dirfd, path, O_NOFOLLOW|O_NOATIME); | |
1532227a LP |
498 | if (dir) |
499 | return dir; | |
500 | ||
501 | log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); | |
502 | if (errno != EPERM) | |
503 | return NULL; | |
504 | ||
505 | dir = xopendirat(dirfd, path, O_NOFOLLOW); | |
506 | if (!dir) | |
507 | log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); | |
df99a9ef ZJS |
508 | |
509 | return dir; | |
510 | } | |
511 | ||
512 | static DIR* opendir_nomod(const char *path) { | |
513 | return xopendirat_nomod(AT_FDCWD, path); | |
514 | } | |
515 | ||
3b63d2d3 | 516 | static int dir_cleanup( |
78a92a5a | 517 | Item *i, |
3b63d2d3 LP |
518 | const char *p, |
519 | DIR *d, | |
520 | const struct stat *ds, | |
521 | usec_t cutoff, | |
522 | dev_t rootdev, | |
523 | bool mountpoint, | |
24f3a374 | 524 | int maxdepth, |
265ffa1e LP |
525 | bool keep_this_level) { |
526 | ||
3b63d2d3 LP |
527 | struct dirent *dent; |
528 | struct timespec times[2]; | |
529 | bool deleted = false; | |
3b63d2d3 LP |
530 | int r = 0; |
531 | ||
8fb3f009 | 532 | FOREACH_DIRENT_ALL(dent, d, break) { |
3b63d2d3 LP |
533 | struct stat s; |
534 | usec_t age; | |
7fd1b19b | 535 | _cleanup_free_ char *sub_path = NULL; |
3b63d2d3 | 536 | |
49bfc877 | 537 | if (dot_or_dot_dot(dent->d_name)) |
3b63d2d3 | 538 | continue; |
5008d581 | 539 | |
3b63d2d3 | 540 | if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) { |
ca2f4176 KS |
541 | if (errno == ENOENT) |
542 | continue; | |
5008d581 | 543 | |
ca2f4176 | 544 | /* FUSE, NFS mounts, SELinux might return EACCES */ |
ecc1709c LP |
545 | r = log_full_errno(errno == EACCES ? LOG_DEBUG : LOG_ERR, errno, |
546 | "stat(%s/%s) failed: %m", p, dent->d_name); | |
3b63d2d3 LP |
547 | continue; |
548 | } | |
549 | ||
550 | /* Stay on the same filesystem */ | |
582deb84 ZJS |
551 | if (s.st_dev != rootdev) { |
552 | log_debug("Ignoring \"%s/%s\": different filesystem.", p, dent->d_name); | |
3b63d2d3 | 553 | continue; |
582deb84 | 554 | } |
3b63d2d3 | 555 | |
99d680ac KS |
556 | /* Try to detect bind mounts of the same filesystem instance; they |
557 | * do not differ in device major/minors. This type of query is not | |
558 | * supported on all kernels or filesystem types though. */ | |
582deb84 ZJS |
559 | if (S_ISDIR(s.st_mode) && dir_is_mount_point(d, dent->d_name) > 0) { |
560 | log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.", | |
561 | p, dent->d_name); | |
99d680ac | 562 | continue; |
582deb84 | 563 | } |
99d680ac | 564 | |
605405c6 | 565 | sub_path = strjoin(p, "/", dent->d_name); |
cde684a2 | 566 | if (!sub_path) { |
0d0f0c50 | 567 | r = log_oom(); |
3b63d2d3 LP |
568 | goto finish; |
569 | } | |
570 | ||
571 | /* Is there an item configured for this path? */ | |
ef43a391 | 572 | if (ordered_hashmap_get(items, sub_path)) { |
582deb84 | 573 | log_debug("Ignoring \"%s\": a separate entry exists.", sub_path); |
3b63d2d3 | 574 | continue; |
582deb84 | 575 | } |
3b63d2d3 | 576 | |
582deb84 ZJS |
577 | if (find_glob(globs, sub_path)) { |
578 | log_debug("Ignoring \"%s\": a separate glob exists.", sub_path); | |
b8bb3e8f | 579 | continue; |
582deb84 | 580 | } |
b8bb3e8f | 581 | |
3b63d2d3 LP |
582 | if (S_ISDIR(s.st_mode)) { |
583 | ||
584 | if (mountpoint && | |
585 | streq(dent->d_name, "lost+found") && | |
582deb84 ZJS |
586 | s.st_uid == 0) { |
587 | log_debug("Ignoring \"%s\".", sub_path); | |
3b63d2d3 | 588 | continue; |
582deb84 | 589 | } |
3b63d2d3 LP |
590 | |
591 | if (maxdepth <= 0) | |
582deb84 | 592 | log_warning("Reached max depth on \"%s\".", sub_path); |
3b63d2d3 | 593 | else { |
7fd1b19b | 594 | _cleanup_closedir_ DIR *sub_dir; |
3b63d2d3 LP |
595 | int q; |
596 | ||
df99a9ef | 597 | sub_dir = xopendirat_nomod(dirfd(d), dent->d_name); |
cde684a2 | 598 | if (!sub_dir) { |
582deb84 ZJS |
599 | if (errno != ENOENT) |
600 | r = log_error_errno(errno, "opendir(%s) failed: %m", sub_path); | |
3b63d2d3 LP |
601 | |
602 | continue; | |
603 | } | |
604 | ||
78a92a5a | 605 | q = dir_cleanup(i, sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1, false); |
3b63d2d3 LP |
606 | if (q < 0) |
607 | r = q; | |
608 | } | |
609 | ||
24f3a374 LP |
610 | /* Note: if you are wondering why we don't |
611 | * support the sticky bit for excluding | |
612 | * directories from cleaning like we do it for | |
613 | * other file system objects: well, the sticky | |
614 | * bit already has a meaning for directories, | |
615 | * so we don't want to overload that. */ | |
616 | ||
582deb84 ZJS |
617 | if (keep_this_level) { |
618 | log_debug("Keeping \"%s\".", sub_path); | |
24f3a374 | 619 | continue; |
582deb84 | 620 | } |
24f3a374 | 621 | |
3b63d2d3 | 622 | /* Ignore ctime, we change it when deleting */ |
582deb84 ZJS |
623 | age = timespec_load(&s.st_mtim); |
624 | if (age >= cutoff) { | |
625 | char a[FORMAT_TIMESTAMP_MAX]; | |
626 | /* Follows spelling in stat(1). */ | |
627 | log_debug("Directory \"%s\": modify time %s is too new.", | |
628 | sub_path, | |
629 | format_timestamp_us(a, sizeof(a), age)); | |
3b63d2d3 | 630 | continue; |
582deb84 ZJS |
631 | } |
632 | ||
633 | age = timespec_load(&s.st_atim); | |
634 | if (age >= cutoff) { | |
635 | char a[FORMAT_TIMESTAMP_MAX]; | |
636 | log_debug("Directory \"%s\": access time %s is too new.", | |
637 | sub_path, | |
638 | format_timestamp_us(a, sizeof(a), age)); | |
639 | continue; | |
640 | } | |
3b63d2d3 | 641 | |
61253220 ZJS |
642 | log_debug("Removing directory \"%s\".", sub_path); |
643 | if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) | |
920ce828 LP |
644 | if (!IN_SET(errno, ENOENT, ENOTEMPTY)) |
645 | r = log_error_errno(errno, "rmdir(%s): %m", sub_path); | |
3b63d2d3 LP |
646 | |
647 | } else { | |
9c73736d LP |
648 | /* Skip files for which the sticky bit is |
649 | * set. These are semantics we define, and are | |
650 | * unknown elsewhere. See XDG_RUNTIME_DIR | |
651 | * specification for details. */ | |
582deb84 ZJS |
652 | if (s.st_mode & S_ISVTX) { |
653 | log_debug("Skipping \"%s\": sticky bit set.", sub_path); | |
9c73736d | 654 | continue; |
582deb84 | 655 | } |
9c73736d | 656 | |
582deb84 | 657 | if (mountpoint && S_ISREG(s.st_mode)) |
1542c01b ZJS |
658 | if (s.st_uid == 0 && STR_IN_SET(dent->d_name, |
659 | ".journal", | |
660 | "aquota.user", | |
661 | "aquota.group")) { | |
582deb84 | 662 | log_debug("Skipping \"%s\".", sub_path); |
3b63d2d3 | 663 | continue; |
582deb84 | 664 | } |
3b63d2d3 | 665 | |
17b90525 | 666 | /* Ignore sockets that are listed in /proc/net/unix */ |
582deb84 ZJS |
667 | if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path)) { |
668 | log_debug("Skipping \"%s\": live socket.", sub_path); | |
17b90525 | 669 | continue; |
582deb84 | 670 | } |
17b90525 | 671 | |
78ab08eb | 672 | /* Ignore device nodes */ |
582deb84 ZJS |
673 | if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) { |
674 | log_debug("Skipping \"%s\": a device.", sub_path); | |
78ab08eb | 675 | continue; |
582deb84 | 676 | } |
78ab08eb | 677 | |
24f3a374 LP |
678 | /* Keep files on this level around if this is |
679 | * requested */ | |
582deb84 ZJS |
680 | if (keep_this_level) { |
681 | log_debug("Keeping \"%s\".", sub_path); | |
24f3a374 | 682 | continue; |
582deb84 | 683 | } |
24f3a374 | 684 | |
582deb84 ZJS |
685 | age = timespec_load(&s.st_mtim); |
686 | if (age >= cutoff) { | |
687 | char a[FORMAT_TIMESTAMP_MAX]; | |
688 | /* Follows spelling in stat(1). */ | |
689 | log_debug("File \"%s\": modify time %s is too new.", | |
690 | sub_path, | |
691 | format_timestamp_us(a, sizeof(a), age)); | |
3b63d2d3 | 692 | continue; |
582deb84 | 693 | } |
3b63d2d3 | 694 | |
582deb84 ZJS |
695 | age = timespec_load(&s.st_atim); |
696 | if (age >= cutoff) { | |
697 | char a[FORMAT_TIMESTAMP_MAX]; | |
698 | log_debug("File \"%s\": access time %s is too new.", | |
699 | sub_path, | |
700 | format_timestamp_us(a, sizeof(a), age)); | |
701 | continue; | |
702 | } | |
3b63d2d3 | 703 | |
582deb84 ZJS |
704 | age = timespec_load(&s.st_ctim); |
705 | if (age >= cutoff) { | |
706 | char a[FORMAT_TIMESTAMP_MAX]; | |
707 | log_debug("File \"%s\": change time %s is too new.", | |
708 | sub_path, | |
709 | format_timestamp_us(a, sizeof(a), age)); | |
710 | continue; | |
3b63d2d3 LP |
711 | } |
712 | ||
582deb84 ZJS |
713 | log_debug("unlink \"%s\"", sub_path); |
714 | ||
715 | if (unlinkat(dirfd(d), dent->d_name, 0) < 0) | |
716 | if (errno != ENOENT) | |
717 | r = log_error_errno(errno, "unlink(%s): %m", sub_path); | |
718 | ||
3b63d2d3 LP |
719 | deleted = true; |
720 | } | |
721 | } | |
722 | ||
723 | finish: | |
724 | if (deleted) { | |
582deb84 ZJS |
725 | usec_t age1, age2; |
726 | char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX]; | |
727 | ||
3b63d2d3 LP |
728 | /* Restore original directory timestamps */ |
729 | times[0] = ds->st_atim; | |
730 | times[1] = ds->st_mtim; | |
731 | ||
582deb84 ZJS |
732 | age1 = timespec_load(&ds->st_atim); |
733 | age2 = timespec_load(&ds->st_mtim); | |
734 | log_debug("Restoring access and modification time on \"%s\": %s, %s", | |
735 | p, | |
736 | format_timestamp_us(a, sizeof(a), age1), | |
737 | format_timestamp_us(b, sizeof(b), age2)); | |
3b63d2d3 | 738 | if (futimens(dirfd(d), times) < 0) |
56f64d95 | 739 | log_error_errno(errno, "utimensat(%s): %m", p); |
3b63d2d3 LP |
740 | } |
741 | ||
3b63d2d3 LP |
742 | return r; |
743 | } | |
744 | ||
5579f856 LP |
745 | static bool dangerous_hardlinks(void) { |
746 | _cleanup_free_ char *value = NULL; | |
747 | static int cached = -1; | |
748 | int r; | |
749 | ||
750 | /* Check whether the fs.protected_hardlinks sysctl is on. If we can't determine it we assume its off, as that's | |
751 | * what the upstream default is. */ | |
752 | ||
753 | if (cached >= 0) | |
754 | return cached; | |
755 | ||
756 | r = read_one_line_file("/proc/sys/fs/protected_hardlinks", &value); | |
757 | if (r < 0) { | |
758 | log_debug_errno(r, "Failed to read fs.protected_hardlinks sysctl: %m"); | |
759 | return true; | |
760 | } | |
761 | ||
762 | r = parse_boolean(value); | |
763 | if (r < 0) { | |
764 | log_debug_errno(r, "Failed to parse fs.protected_hardlinks sysctl: %m"); | |
765 | return true; | |
766 | } | |
767 | ||
768 | cached = r == 0; | |
769 | return cached; | |
770 | } | |
771 | ||
774f79b5 | 772 | static bool hardlink_vulnerable(const struct stat *st) { |
5579f856 LP |
773 | assert(st); |
774 | ||
775 | return !S_ISDIR(st->st_mode) && st->st_nlink > 1 && dangerous_hardlinks(); | |
776 | } | |
777 | ||
9d874aec | 778 | static int fd_set_perms(Item *i, int fd, const char *path, const struct stat *st) { |
b206ac8e | 779 | struct stat stbuf; |
1924a97d | 780 | |
cde684a2 | 781 | assert(i); |
936f6bdb | 782 | assert(fd); |
4dc7bfdf | 783 | assert(path); |
48b8aaa8 | 784 | |
936f6bdb FB |
785 | if (!i->mode_set && !i->uid_set && !i->gid_set) |
786 | goto shortcut; | |
1924a97d | 787 | |
b206ac8e FB |
788 | if (!st) { |
789 | if (fstat(fd, &stbuf) < 0) | |
790 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
791 | st = &stbuf; | |
792 | } | |
793 | ||
baaa35ad ZJS |
794 | if (hardlink_vulnerable(st)) |
795 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
796 | "Refusing to set permissions on hardlinked file %s while the fs.protected_hardlinks sysctl is turned off.", | |
797 | path); | |
5579f856 | 798 | |
51207ca1 | 799 | if (i->mode_set) { |
936f6bdb | 800 | if (S_ISLNK(st->st_mode)) |
51207ca1 LP |
801 | log_debug("Skipping mode fix for symlink %s.", path); |
802 | else { | |
48b8aaa8 LP |
803 | mode_t m = i->mode; |
804 | ||
805 | if (i->mask_perms) { | |
936f6bdb | 806 | if (!(st->st_mode & 0111)) |
48b8aaa8 | 807 | m &= ~0111; |
936f6bdb | 808 | if (!(st->st_mode & 0222)) |
7d6884b6 | 809 | m &= ~0222; |
936f6bdb | 810 | if (!(st->st_mode & 0444)) |
48b8aaa8 | 811 | m &= ~0444; |
936f6bdb | 812 | if (!S_ISDIR(st->st_mode)) |
48b8aaa8 LP |
813 | m &= ~07000; /* remove sticky/sgid/suid bit, unless directory */ |
814 | } | |
abef3f91 | 815 | |
936f6bdb FB |
816 | if (m == (st->st_mode & 07777)) |
817 | log_debug("\"%s\" has correct mode %o already.", path, st->st_mode); | |
48b8aaa8 | 818 | else { |
51207ca1 | 819 | log_debug("Changing \"%s\" to mode %o.", path, m); |
4dfaa528 FB |
820 | if (fchmod_opath(fd, m) < 0) |
821 | return log_error_errno(errno, "fchmod() of %s failed: %m", path); | |
48b8aaa8 | 822 | } |
062e01bb | 823 | } |
51207ca1 | 824 | } |
062e01bb | 825 | |
936f6bdb FB |
826 | if ((i->uid_set && i->uid != st->st_uid) || |
827 | (i->gid_set && i->gid != st->st_gid)) { | |
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 | |
59793c8f | 841 | shortcut: |
08c84981 | 842 | return label_fix(path, 0); |
062e01bb MS |
843 | } |
844 | ||
5ec9d065 FB |
845 | static int path_open_parent_safe(const char *path) { |
846 | _cleanup_free_ char *dn = NULL; | |
847 | int fd; | |
848 | ||
baaa35ad ZJS |
849 | if (path_equal(path, "/") || !path_is_normalized(path)) |
850 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
851 | "Failed to open parent of '%s': invalid path.", | |
852 | path); | |
5ec9d065 FB |
853 | |
854 | dn = dirname_malloc(path); | |
855 | if (!dn) | |
856 | return log_oom(); | |
857 | ||
7f0704da FB |
858 | fd = chase_symlinks(dn, NULL, CHASE_OPEN|CHASE_SAFE|CHASE_WARN, NULL); |
859 | if (fd < 0 && fd != -ENOLINK) | |
5ec9d065 FB |
860 | return log_error_errno(fd, "Failed to validate path %s: %m", path); |
861 | ||
862 | return fd; | |
863 | } | |
864 | ||
addc3e30 FB |
865 | static int path_open_safe(const char *path) { |
866 | int fd; | |
867 | ||
868 | /* path_open_safe() returns a file descriptor opened with O_PATH after | |
869 | * verifying that the path doesn't contain unsafe transitions, except | |
870 | * for its final component as the function does not follow symlink. */ | |
871 | ||
872 | assert(path); | |
873 | ||
baaa35ad ZJS |
874 | if (!path_is_normalized(path)) |
875 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
876 | "Failed to open invalid path '%s'.", | |
877 | path); | |
addc3e30 | 878 | |
7f0704da FB |
879 | fd = chase_symlinks(path, NULL, CHASE_OPEN|CHASE_SAFE|CHASE_WARN|CHASE_NOFOLLOW, NULL); |
880 | if (fd < 0 && fd != -ENOLINK) | |
addc3e30 FB |
881 | return log_error_errno(fd, "Failed to validate path %s: %m", path); |
882 | ||
883 | return fd; | |
884 | } | |
885 | ||
936f6bdb FB |
886 | static int path_set_perms(Item *i, const char *path) { |
887 | _cleanup_close_ int fd = -1; | |
936f6bdb FB |
888 | |
889 | assert(i); | |
890 | assert(path); | |
891 | ||
addc3e30 | 892 | fd = path_open_safe(path); |
54946021 | 893 | if (fd < 0) |
addc3e30 | 894 | return fd; |
d460ba18 | 895 | |
9d874aec | 896 | return fd_set_perms(i, fd, path, NULL); |
936f6bdb FB |
897 | } |
898 | ||
bd550f78 | 899 | static int parse_xattrs_from_arg(Item *i) { |
ebf4e801 MW |
900 | const char *p; |
901 | int r; | |
902 | ||
903 | assert(i); | |
505ef0e3 | 904 | assert(i->argument); |
ebf4e801 | 905 | |
ebf4e801 MW |
906 | p = i->argument; |
907 | ||
4034a06d | 908 | for (;;) { |
4cef1923 | 909 | _cleanup_free_ char *name = NULL, *value = NULL, *xattr = NULL; |
4034a06d | 910 | |
12ba2c44 | 911 | r = extract_first_word(&p, &xattr, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE); |
4034a06d | 912 | if (r < 0) |
bd550f78 | 913 | log_warning_errno(r, "Failed to parse extended attribute '%s', ignoring: %m", p); |
4034a06d LP |
914 | if (r <= 0) |
915 | break; | |
505ef0e3 | 916 | |
4cef1923 | 917 | r = split_pair(xattr, "=", &name, &value); |
ebf4e801 | 918 | if (r < 0) { |
4034a06d | 919 | log_warning_errno(r, "Failed to parse extended attribute, ignoring: %s", xattr); |
ebf4e801 MW |
920 | continue; |
921 | } | |
505ef0e3 | 922 | |
4034a06d | 923 | if (isempty(name) || isempty(value)) { |
bd550f78 | 924 | log_warning("Malformed extended attribute found, ignoring: %s", xattr); |
ebf4e801 MW |
925 | continue; |
926 | } | |
505ef0e3 | 927 | |
4034a06d | 928 | if (strv_push_pair(&i->xattrs, name, value) < 0) |
ebf4e801 | 929 | return log_oom(); |
505ef0e3 | 930 | |
4034a06d | 931 | name = value = NULL; |
ebf4e801 MW |
932 | } |
933 | ||
4034a06d | 934 | return 0; |
ebf4e801 MW |
935 | } |
936 | ||
9d874aec | 937 | static int fd_set_xattrs(Item *i, int fd, const char *path, const struct stat *st) { |
34d26777 | 938 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
ebf4e801 MW |
939 | char **name, **value; |
940 | ||
941 | assert(i); | |
936f6bdb | 942 | assert(fd); |
4dc7bfdf | 943 | assert(path); |
936f6bdb FB |
944 | |
945 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); | |
ebf4e801 | 946 | |
ebf4e801 | 947 | STRV_FOREACH_PAIR(name, value, i->xattrs) { |
bd550f78 | 948 | log_debug("Setting extended attribute '%s=%s' on %s.", *name, *value, path); |
936f6bdb | 949 | if (setxattr(procfs_path, *name, *value, strlen(*value), 0) < 0) |
25f027c5 ZJS |
950 | return log_error_errno(errno, "Setting extended attribute %s=%s on %s failed: %m", |
951 | *name, *value, path); | |
ebf4e801 MW |
952 | } |
953 | return 0; | |
954 | } | |
955 | ||
936f6bdb FB |
956 | static int path_set_xattrs(Item *i, const char *path) { |
957 | _cleanup_close_ int fd = -1; | |
958 | ||
959 | assert(i); | |
960 | assert(path); | |
961 | ||
addc3e30 | 962 | fd = path_open_safe(path); |
936f6bdb | 963 | if (fd < 0) |
addc3e30 | 964 | return fd; |
936f6bdb | 965 | |
9d874aec | 966 | return fd_set_xattrs(i, fd, path, NULL); |
936f6bdb FB |
967 | } |
968 | ||
bd550f78 | 969 | static int parse_acls_from_arg(Item *item) { |
349cc4a5 | 970 | #if HAVE_ACL |
f8eeeaf9 | 971 | int r; |
f8eeeaf9 ZJS |
972 | |
973 | assert(item); | |
974 | ||
50d9e46d ZJS |
975 | /* If force (= modify) is set, we will not modify the acl |
976 | * afterwards, so the mask can be added now if necessary. */ | |
bd550f78 | 977 | |
50d9e46d | 978 | r = parse_acl(item->argument, &item->acl_access, &item->acl_default, !item->force); |
f8eeeaf9 | 979 | if (r < 0) |
4034a06d | 980 | log_warning_errno(r, "Failed to parse ACL \"%s\": %m. Ignoring", item->argument); |
f8eeeaf9 | 981 | #else |
886cf317 | 982 | log_warning_errno(SYNTHETIC_ERRNO(ENOSYS), "ACLs are not supported. Ignoring"); |
f8eeeaf9 ZJS |
983 | #endif |
984 | ||
985 | return 0; | |
986 | } | |
987 | ||
349cc4a5 | 988 | #if HAVE_ACL |
48b8aaa8 LP |
989 | static int path_set_acl(const char *path, const char *pretty, acl_type_t type, acl_t acl, bool modify) { |
990 | _cleanup_(acl_free_charpp) char *t = NULL; | |
dd4105b0 | 991 | _cleanup_(acl_freep) acl_t dup = NULL; |
50d9e46d ZJS |
992 | int r; |
993 | ||
d873e877 HPD |
994 | /* Returns 0 for success, positive error if already warned, |
995 | * negative error otherwise. */ | |
996 | ||
50d9e46d | 997 | if (modify) { |
dd4105b0 | 998 | r = acls_for_file(path, type, acl, &dup); |
50d9e46d ZJS |
999 | if (r < 0) |
1000 | return r; | |
50d9e46d | 1001 | |
dd4105b0 ZJS |
1002 | r = calc_acl_mask_if_needed(&dup); |
1003 | if (r < 0) | |
1004 | return r; | |
1005 | } else { | |
1006 | dup = acl_dup(acl); | |
1007 | if (!dup) | |
1008 | return -errno; | |
1009 | ||
1010 | /* the mask was already added earlier if needed */ | |
1011 | } | |
1012 | ||
1013 | r = add_base_acls_if_needed(&dup, path); | |
1014 | if (r < 0) | |
1015 | return r; | |
1016 | ||
582deb84 | 1017 | t = acl_to_any_text(dup, NULL, ',', TEXT_ABBREVIATE); |
48b8aaa8 | 1018 | log_debug("Setting %s ACL %s on %s.", |
582deb84 | 1019 | type == ACL_TYPE_ACCESS ? "access" : "default", |
48b8aaa8 | 1020 | strna(t), pretty); |
50d9e46d | 1021 | |
582deb84 ZJS |
1022 | r = acl_set_file(path, type, dup); |
1023 | if (r < 0) | |
3ea40b78 LP |
1024 | /* Return positive to indicate we already warned */ |
1025 | return -log_error_errno(errno, | |
1026 | "Setting %s ACL \"%s\" on %s failed: %m", | |
1027 | type == ACL_TYPE_ACCESS ? "access" : "default", | |
48b8aaa8 | 1028 | strna(t), pretty); |
d873e877 | 1029 | |
582deb84 | 1030 | return 0; |
50d9e46d | 1031 | } |
35888b67 | 1032 | #endif |
50d9e46d | 1033 | |
9d874aec | 1034 | static int fd_set_acls(Item *item, int fd, const char *path, const struct stat *st) { |
d873e877 | 1035 | int r = 0; |
349cc4a5 | 1036 | #if HAVE_ACL |
34d26777 | 1037 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
b206ac8e | 1038 | struct stat stbuf; |
48b8aaa8 | 1039 | |
f8eeeaf9 | 1040 | assert(item); |
936f6bdb | 1041 | assert(fd); |
4dc7bfdf | 1042 | assert(path); |
48b8aaa8 | 1043 | |
b206ac8e FB |
1044 | if (!st) { |
1045 | if (fstat(fd, &stbuf) < 0) | |
1046 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
1047 | st = &stbuf; | |
1048 | } | |
1049 | ||
baaa35ad ZJS |
1050 | if (hardlink_vulnerable(st)) |
1051 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
1052 | "Refusing to set ACLs on hardlinked file %s while the fs.protected_hardlinks sysctl is turned off.", | |
1053 | path); | |
5579f856 | 1054 | |
936f6bdb | 1055 | if (S_ISLNK(st->st_mode)) { |
48b8aaa8 LP |
1056 | log_debug("Skipping ACL fix for symlink %s.", path); |
1057 | return 0; | |
1058 | } | |
1059 | ||
936f6bdb | 1060 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); |
48b8aaa8 | 1061 | |
d873e877 | 1062 | if (item->acl_access) |
936f6bdb | 1063 | r = path_set_acl(procfs_path, path, ACL_TYPE_ACCESS, item->acl_access, item->force); |
f8eeeaf9 | 1064 | |
2667385b RM |
1065 | /* set only default acls to folders */ |
1066 | if (r == 0 && item->acl_default && S_ISDIR(st->st_mode)) | |
936f6bdb | 1067 | r = path_set_acl(procfs_path, path, ACL_TYPE_DEFAULT, item->acl_default, item->force); |
f8eeeaf9 | 1068 | |
d873e877 HPD |
1069 | if (r > 0) |
1070 | return -r; /* already warned */ | |
936f6bdb | 1071 | if (r == -EOPNOTSUPP) { |
d873e877 HPD |
1072 | log_debug_errno(r, "ACLs not supported by file system at %s", path); |
1073 | return 0; | |
936f6bdb FB |
1074 | } |
1075 | if (r < 0) | |
1076 | return log_error_errno(r, "ACL operation on \"%s\" failed: %m", path); | |
d873e877 HPD |
1077 | #endif |
1078 | return r; | |
f8eeeaf9 ZJS |
1079 | } |
1080 | ||
936f6bdb FB |
1081 | static int path_set_acls(Item *item, const char *path) { |
1082 | int r = 0; | |
545cdb90 | 1083 | #if HAVE_ACL |
936f6bdb | 1084 | _cleanup_close_ int fd = -1; |
936f6bdb FB |
1085 | |
1086 | assert(item); | |
1087 | assert(path); | |
1088 | ||
addc3e30 | 1089 | fd = path_open_safe(path); |
936f6bdb | 1090 | if (fd < 0) |
addc3e30 | 1091 | return fd; |
936f6bdb | 1092 | |
9d874aec | 1093 | r = fd_set_acls(item, fd, path, NULL); |
545cdb90 YW |
1094 | #endif |
1095 | return r; | |
1096 | } | |
936f6bdb | 1097 | |
88ec4dfa LP |
1098 | #define ATTRIBUTES_ALL \ |
1099 | (FS_NOATIME_FL | \ | |
1100 | FS_SYNC_FL | \ | |
1101 | FS_DIRSYNC_FL | \ | |
1102 | FS_APPEND_FL | \ | |
1103 | FS_COMPR_FL | \ | |
1104 | FS_NODUMP_FL | \ | |
1105 | FS_EXTENT_FL | \ | |
1106 | FS_IMMUTABLE_FL | \ | |
1107 | FS_JOURNAL_DATA_FL | \ | |
1108 | FS_SECRM_FL | \ | |
1109 | FS_UNRM_FL | \ | |
1110 | FS_NOTAIL_FL | \ | |
1111 | FS_TOPDIR_FL | \ | |
1112 | FS_NOCOW_FL) | |
1113 | ||
bd550f78 | 1114 | static int parse_attribute_from_arg(Item *item) { |
88ec4dfa LP |
1115 | |
1116 | static const struct { | |
1117 | char character; | |
1118 | unsigned value; | |
1119 | } attributes[] = { | |
1120 | { 'A', FS_NOATIME_FL }, /* do not update atime */ | |
1121 | { 'S', FS_SYNC_FL }, /* Synchronous updates */ | |
1122 | { 'D', FS_DIRSYNC_FL }, /* dirsync behaviour (directories only) */ | |
1123 | { 'a', FS_APPEND_FL }, /* writes to file may only append */ | |
1124 | { 'c', FS_COMPR_FL }, /* Compress file */ | |
1125 | { 'd', FS_NODUMP_FL }, /* do not dump file */ | |
8c35b2ca | 1126 | { 'e', FS_EXTENT_FL }, /* Extents */ |
88ec4dfa LP |
1127 | { 'i', FS_IMMUTABLE_FL }, /* Immutable file */ |
1128 | { 'j', FS_JOURNAL_DATA_FL }, /* Reserved for ext3 */ | |
1129 | { 's', FS_SECRM_FL }, /* Secure deletion */ | |
1130 | { 'u', FS_UNRM_FL }, /* Undelete */ | |
1131 | { 't', FS_NOTAIL_FL }, /* file tail should not be merged */ | |
13e785f7 | 1132 | { 'T', FS_TOPDIR_FL }, /* Top of directory hierarchies */ |
88ec4dfa | 1133 | { 'C', FS_NOCOW_FL }, /* Do not cow file */ |
22c3a6ca | 1134 | }; |
88ec4dfa | 1135 | |
22c3a6ca GB |
1136 | enum { |
1137 | MODE_ADD, | |
1138 | MODE_DEL, | |
1139 | MODE_SET | |
1140 | } mode = MODE_ADD; | |
22c3a6ca | 1141 | |
88ec4dfa LP |
1142 | unsigned value = 0, mask = 0; |
1143 | const char *p; | |
22c3a6ca | 1144 | |
88ec4dfa LP |
1145 | assert(item); |
1146 | ||
1147 | p = item->argument; | |
1148 | if (p) { | |
1149 | if (*p == '+') { | |
1150 | mode = MODE_ADD; | |
1151 | p++; | |
1152 | } else if (*p == '-') { | |
1153 | mode = MODE_DEL; | |
1154 | p++; | |
1155 | } else if (*p == '=') { | |
1156 | mode = MODE_SET; | |
1157 | p++; | |
1158 | } | |
22c3a6ca GB |
1159 | } |
1160 | ||
baaa35ad ZJS |
1161 | if (isempty(p) && mode != MODE_SET) |
1162 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1163 | "Setting file attribute on '%s' needs an attribute specification.", | |
1164 | item->path); | |
88ec4dfa LP |
1165 | |
1166 | for (; p && *p ; p++) { | |
1167 | unsigned i, v; | |
1168 | ||
1169 | for (i = 0; i < ELEMENTSOF(attributes); i++) | |
1170 | if (*p == attributes[i].character) | |
1171 | break; | |
1172 | ||
baaa35ad ZJS |
1173 | if (i >= ELEMENTSOF(attributes)) |
1174 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1175 | "Unknown file attribute '%c' on '%s'.", | |
1176 | *p, item->path); | |
88ec4dfa LP |
1177 | |
1178 | v = attributes[i].value; | |
1179 | ||
3742095b | 1180 | SET_FLAG(value, v, IN_SET(mode, MODE_ADD, MODE_SET)); |
88ec4dfa LP |
1181 | |
1182 | mask |= v; | |
22c3a6ca GB |
1183 | } |
1184 | ||
1185 | if (mode == MODE_SET) | |
88ec4dfa | 1186 | mask |= ATTRIBUTES_ALL; |
22c3a6ca | 1187 | |
88ec4dfa | 1188 | assert(mask != 0); |
22c3a6ca | 1189 | |
88ec4dfa LP |
1190 | item->attribute_mask = mask; |
1191 | item->attribute_value = value; | |
1192 | item->attribute_set = true; | |
22c3a6ca GB |
1193 | |
1194 | return 0; | |
22c3a6ca GB |
1195 | } |
1196 | ||
9d874aec | 1197 | static int fd_set_attribute(Item *item, int fd, const char *path, const struct stat *st) { |
936f6bdb | 1198 | _cleanup_close_ int procfs_fd = -1; |
b206ac8e | 1199 | struct stat stbuf; |
88ec4dfa LP |
1200 | unsigned f; |
1201 | int r; | |
22c3a6ca | 1202 | |
4dc7bfdf FB |
1203 | assert(item); |
1204 | assert(fd); | |
1205 | assert(path); | |
1206 | ||
88ec4dfa | 1207 | if (!item->attribute_set || item->attribute_mask == 0) |
22c3a6ca | 1208 | return 0; |
22c3a6ca | 1209 | |
b206ac8e FB |
1210 | if (!st) { |
1211 | if (fstat(fd, &stbuf) < 0) | |
1212 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
1213 | st = &stbuf; | |
1214 | } | |
1215 | ||
88ec4dfa LP |
1216 | /* Issuing the file attribute ioctls on device nodes is not |
1217 | * safe, as that will be delivered to the drivers, not the | |
1218 | * file system containing the device node. */ | |
baaa35ad ZJS |
1219 | if (!S_ISREG(st->st_mode) && !S_ISDIR(st->st_mode)) |
1220 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1221 | "Setting file flags is only supported on regular files and directories, cannot set on '%s'.", | |
1222 | path); | |
88ec4dfa LP |
1223 | |
1224 | f = item->attribute_value & item->attribute_mask; | |
1225 | ||
1226 | /* Mask away directory-specific flags */ | |
936f6bdb | 1227 | if (!S_ISDIR(st->st_mode)) |
22c3a6ca | 1228 | f &= ~FS_DIRSYNC_FL; |
88ec4dfa | 1229 | |
f2324783 | 1230 | procfs_fd = fd_reopen(fd, O_RDONLY|O_CLOEXEC|O_NOATIME); |
936f6bdb | 1231 | if (procfs_fd < 0) |
c3e03778 | 1232 | return log_error_errno(procfs_fd, "Failed to re-open '%s': %m", path); |
936f6bdb | 1233 | |
db9a4254 | 1234 | r = chattr_fd(procfs_fd, f, item->attribute_mask, NULL); |
22c3a6ca | 1235 | if (r < 0) |
4c701096 | 1236 | log_full_errno(IN_SET(r, -ENOTTY, -EOPNOTSUPP) ? LOG_DEBUG : LOG_WARNING, |
ad75a97f | 1237 | r, |
15b45fac | 1238 | "Cannot set file attribute for '%s', value=0x%08x, mask=0x%08x, ignoring: %m", |
ad75a97f | 1239 | path, item->attribute_value, item->attribute_mask); |
22c3a6ca GB |
1240 | |
1241 | return 0; | |
1242 | } | |
1243 | ||
936f6bdb FB |
1244 | static int path_set_attribute(Item *item, const char *path) { |
1245 | _cleanup_close_ int fd = -1; | |
936f6bdb FB |
1246 | |
1247 | if (!item->attribute_set || item->attribute_mask == 0) | |
1248 | return 0; | |
1249 | ||
addc3e30 | 1250 | fd = path_open_safe(path); |
936f6bdb | 1251 | if (fd < 0) |
addc3e30 | 1252 | return fd; |
936f6bdb | 1253 | |
9d874aec | 1254 | return fd_set_attribute(item, fd, path, NULL); |
936f6bdb FB |
1255 | } |
1256 | ||
d4e9eb91 | 1257 | static int write_one_file(Item *i, const char *path) { |
551470ec FB |
1258 | _cleanup_close_ int fd = -1, dir_fd = -1; |
1259 | char *bn; | |
31c84ff1 FB |
1260 | int r; |
1261 | ||
1262 | assert(i); | |
1263 | assert(path); | |
1264 | assert(i->argument); | |
1265 | assert(i->type == WRITE_FILE); | |
1266 | ||
551470ec FB |
1267 | /* Validate the path and keep the fd on the directory for opening the |
1268 | * file so we're sure that it can't be changed behind our back. */ | |
1269 | dir_fd = path_open_parent_safe(path); | |
1270 | if (dir_fd < 0) | |
1271 | return dir_fd; | |
1272 | ||
1273 | bn = basename(path); | |
1274 | ||
31c84ff1 | 1275 | /* Follows symlinks */ |
551470ec | 1276 | fd = openat(dir_fd, bn, O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode); |
31c84ff1 FB |
1277 | if (fd < 0) { |
1278 | if (errno == ENOENT) { | |
1279 | log_debug_errno(errno, "Not writing missing file \"%s\": %m", path); | |
1280 | return 0; | |
1281 | } | |
1282 | return log_error_errno(errno, "Failed to open file \"%s\": %m", path); | |
1283 | } | |
1284 | ||
1285 | /* 'w' is allowed to write into any kind of files. */ | |
1286 | log_debug("Writing to \"%s\".", path); | |
1287 | ||
1288 | r = loop_write(fd, i->argument, strlen(i->argument), false); | |
1289 | if (r < 0) | |
1290 | return log_error_errno(r, "Failed to write file \"%s\": %m", path); | |
1291 | ||
9d874aec | 1292 | return fd_set_perms(i, fd, path, NULL); |
31c84ff1 FB |
1293 | } |
1294 | ||
1295 | static int create_file(Item *i, const char *path) { | |
5ec9d065 FB |
1296 | _cleanup_close_ int fd = -1, dir_fd = -1; |
1297 | struct stat stbuf, *st = NULL; | |
1298 | int r = 0; | |
1299 | char *bn; | |
d4e9eb91 | 1300 | |
874f1947 LP |
1301 | assert(i); |
1302 | assert(path); | |
5ec9d065 FB |
1303 | assert(i->type == CREATE_FILE); |
1304 | ||
1305 | /* 'f' operates on regular files exclusively. */ | |
1306 | ||
1307 | /* Validate the path and keep the fd on the directory for opening the | |
1308 | * file so we're sure that it can't be changed behind our back. */ | |
1309 | dir_fd = path_open_parent_safe(path); | |
1310 | if (dir_fd < 0) | |
1311 | return dir_fd; | |
874f1947 | 1312 | |
5ec9d065 | 1313 | bn = basename(path); |
d4e9eb91 | 1314 | |
43ad6e31 | 1315 | RUN_WITH_UMASK(0000) { |
ecabcf8b | 1316 | mac_selinux_create_file_prepare(path, S_IFREG); |
5ec9d065 | 1317 | fd = openat(dir_fd, bn, O_CREAT|O_EXCL|O_NOFOLLOW|O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode); |
ecabcf8b | 1318 | mac_selinux_create_file_clear(); |
5c0d398d | 1319 | } |
d4e9eb91 DR |
1320 | |
1321 | if (fd < 0) { | |
5ec9d065 FB |
1322 | /* Even on a read-only filesystem, open(2) returns EEXIST if the |
1323 | * file already exists. It returns EROFS only if it needs to | |
1324 | * create the file. */ | |
1325 | if (errno != EEXIST) | |
1326 | return log_error_errno(errno, "Failed to create file %s: %m", path); | |
1327 | ||
1328 | /* Re-open the file. At that point it must exist since open(2) | |
1329 | * failed with EEXIST. We still need to check if the perms/mode | |
1330 | * need to be changed. For read-only filesystems, we let | |
1331 | * fd_set_perms() report the error if the perms need to be | |
1332 | * modified. */ | |
1333 | fd = openat(dir_fd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH, i->mode); | |
1334 | if (fd < 0) | |
1335 | return log_error_errno(errno, "Failed to re-open file %s: %m", path); | |
1336 | ||
1337 | if (fstat(fd, &stbuf) < 0) | |
1338 | return log_error_errno(errno, "stat(%s) failed: %m", path); | |
1339 | ||
1340 | if (!S_ISREG(stbuf.st_mode)) { | |
1341 | log_error("%s exists and is not a regular file.", path); | |
1342 | return -EEXIST; | |
49e87292 | 1343 | } |
d4e9eb91 | 1344 | |
5ec9d065 FB |
1345 | st = &stbuf; |
1346 | } else { | |
1347 | ||
1348 | log_debug("\"%s\" has been created.", path); | |
1349 | ||
1350 | if (i->argument) { | |
1351 | log_debug("Writing to \"%s\".", path); | |
f44b28fd | 1352 | |
5ec9d065 FB |
1353 | r = loop_write(fd, i->argument, strlen(i->argument), false); |
1354 | if (r < 0) | |
1355 | return log_error_errno(r, "Failed to write file \"%s\": %m", path); | |
1356 | } | |
d4e9eb91 DR |
1357 | } |
1358 | ||
9d874aec | 1359 | return fd_set_perms(i, fd, path, st); |
5ec9d065 | 1360 | } |
d4e9eb91 | 1361 | |
5ec9d065 | 1362 | static int truncate_file(Item *i, const char *path) { |
14ab804e | 1363 | _cleanup_close_ int fd = -1, dir_fd = -1; |
5ec9d065 FB |
1364 | struct stat stbuf, *st = NULL; |
1365 | bool erofs = false; | |
1366 | int r = 0; | |
14ab804e | 1367 | char *bn; |
5ec9d065 FB |
1368 | |
1369 | assert(i); | |
1370 | assert(path); | |
1371 | assert(i->type == TRUNCATE_FILE); | |
d4e9eb91 | 1372 | |
5ec9d065 FB |
1373 | /* We want to operate on regular file exclusively especially since |
1374 | * O_TRUNC is unspecified if the file is neither a regular file nor a | |
1375 | * fifo nor a terminal device. Therefore we first open the file and make | |
1376 | * sure it's a regular one before truncating it. */ | |
3612fbc1 | 1377 | |
14ab804e FB |
1378 | /* Validate the path and keep the fd on the directory for opening the |
1379 | * file so we're sure that it can't be changed behind our back. */ | |
1380 | dir_fd = path_open_parent_safe(path); | |
1381 | if (dir_fd < 0) | |
1382 | return dir_fd; | |
1383 | ||
1384 | bn = basename(path); | |
1385 | ||
5ec9d065 FB |
1386 | RUN_WITH_UMASK(0000) { |
1387 | mac_selinux_create_file_prepare(path, S_IFREG); | |
14ab804e | 1388 | fd = openat(dir_fd, bn, O_CREAT|O_NOFOLLOW|O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode); |
5ec9d065 FB |
1389 | mac_selinux_create_file_clear(); |
1390 | } | |
1391 | ||
1392 | if (fd < 0) { | |
1393 | if (errno != EROFS) | |
1394 | return log_error_errno(errno, "Failed to open/create file %s: %m", path); | |
1395 | ||
1396 | /* On a read-only filesystem, we don't want to fail if the | |
1397 | * target is already empty and the perms are set. So we still | |
1398 | * proceed with the sanity checks and let the remaining | |
1399 | * operations fail with EROFS if they try to modify the target | |
1400 | * file. */ | |
1401 | ||
14ab804e | 1402 | fd = openat(dir_fd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH, i->mode); |
5ec9d065 FB |
1403 | if (fd < 0) { |
1404 | if (errno == ENOENT) { | |
1405 | log_error("Cannot create file %s on a read-only file system.", path); | |
1406 | return -EROFS; | |
1407 | } | |
1408 | ||
1409 | return log_error_errno(errno, "Failed to re-open file %s: %m", path); | |
1410 | } | |
1411 | ||
1412 | erofs = true; | |
1413 | } | |
1414 | ||
1415 | if (fstat(fd, &stbuf) < 0) | |
4a62c710 | 1416 | return log_error_errno(errno, "stat(%s) failed: %m", path); |
d4e9eb91 | 1417 | |
5ec9d065 FB |
1418 | if (!S_ISREG(stbuf.st_mode)) { |
1419 | log_error("%s exists and is not a regular file.", path); | |
d4e9eb91 DR |
1420 | return -EEXIST; |
1421 | } | |
1422 | ||
5ec9d065 FB |
1423 | if (stbuf.st_size > 0) { |
1424 | if (ftruncate(fd, 0) < 0) { | |
1425 | r = erofs ? -EROFS : -errno; | |
1426 | return log_error_errno(r, "Failed to truncate file %s: %m", path); | |
1427 | } | |
1428 | } else | |
1429 | st = &stbuf; | |
d4e9eb91 | 1430 | |
5ec9d065 FB |
1431 | log_debug("\"%s\" has been created.", path); |
1432 | ||
1433 | if (i->argument) { | |
1434 | log_debug("Writing to \"%s\".", path); | |
1435 | ||
1436 | r = loop_write(fd, i->argument, strlen(i->argument), false); | |
1437 | if (r < 0) { | |
1438 | r = erofs ? -EROFS : r; | |
1439 | return log_error_errno(r, "Failed to write file %s: %m", path); | |
1440 | } | |
1441 | } | |
1442 | ||
9d874aec | 1443 | return fd_set_perms(i, fd, path, st); |
d4e9eb91 DR |
1444 | } |
1445 | ||
b1f7b17f | 1446 | static int copy_files(Item *i) { |
16ba55ad FB |
1447 | _cleanup_close_ int dfd = -1, fd = -1; |
1448 | char *bn; | |
b1f7b17f FB |
1449 | int r; |
1450 | ||
1451 | log_debug("Copying tree \"%s\" to \"%s\".", i->argument, i->path); | |
1452 | ||
16ba55ad | 1453 | bn = basename(i->path); |
b1f7b17f | 1454 | |
16ba55ad FB |
1455 | /* Validate the path and use the returned directory fd for copying the |
1456 | * target so we're sure that the path can't be changed behind our | |
1457 | * back. */ | |
1458 | dfd = path_open_parent_safe(i->path); | |
1459 | if (dfd < 0) | |
1460 | return dfd; | |
b1f7b17f | 1461 | |
16ba55ad FB |
1462 | r = copy_tree_at(AT_FDCWD, i->argument, |
1463 | dfd, bn, | |
1464 | i->uid_set ? i->uid : UID_INVALID, | |
1465 | i->gid_set ? i->gid : GID_INVALID, | |
a6f44645 | 1466 | COPY_REFLINK | COPY_MERGE_EMPTY); |
b1f7b17f FB |
1467 | if (r < 0) { |
1468 | struct stat a, b; | |
1469 | ||
16ba55ad FB |
1470 | /* If the target already exists on read-only filesystems, trying |
1471 | * to create the target will not fail with EEXIST but with | |
1472 | * EROFS. */ | |
1473 | if (r == -EROFS && faccessat(dfd, bn, F_OK, AT_SYMLINK_NOFOLLOW) == 0) | |
1474 | r = -EEXIST; | |
1475 | ||
b1f7b17f FB |
1476 | if (r != -EEXIST) |
1477 | return log_error_errno(r, "Failed to copy files to %s: %m", i->path); | |
1478 | ||
1479 | if (stat(i->argument, &a) < 0) | |
1480 | return log_error_errno(errno, "stat(%s) failed: %m", i->argument); | |
1481 | ||
16ba55ad | 1482 | if (fstatat(dfd, bn, &b, AT_SYMLINK_NOFOLLOW) < 0) |
b1f7b17f FB |
1483 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); |
1484 | ||
1485 | if ((a.st_mode ^ b.st_mode) & S_IFMT) { | |
1486 | log_debug("Can't copy to %s, file exists already and is of different type", i->path); | |
1487 | return 0; | |
1488 | } | |
1489 | } | |
1490 | ||
16ba55ad FB |
1491 | fd = openat(dfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1492 | if (fd < 0) | |
1493 | return log_error_errno(errno, "Failed to openat(%s): %m", i->path); | |
1494 | ||
9d874aec | 1495 | return fd_set_perms(i, fd, i->path, NULL); |
b1f7b17f FB |
1496 | } |
1497 | ||
074bd73f FB |
1498 | typedef enum { |
1499 | CREATION_NORMAL, | |
1500 | CREATION_EXISTING, | |
1501 | CREATION_FORCE, | |
1502 | _CREATION_MODE_MAX, | |
1503 | _CREATION_MODE_INVALID = -1 | |
1504 | } CreationMode; | |
1505 | ||
1506 | static const char *creation_mode_verb_table[_CREATION_MODE_MAX] = { | |
1507 | [CREATION_NORMAL] = "Created", | |
1508 | [CREATION_EXISTING] = "Found existing", | |
1509 | [CREATION_FORCE] = "Created replacement", | |
1510 | }; | |
1511 | ||
1512 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb, CreationMode); | |
1513 | ||
f17a8d61 | 1514 | static int create_directory_or_subvolume(const char *path, mode_t mode, bool subvol, CreationMode *creation) { |
4c39d899 | 1515 | _cleanup_close_ int pfd = -1; |
f17a8d61 | 1516 | CreationMode c; |
4c39d899 | 1517 | int r; |
4ad36844 | 1518 | |
4c39d899 | 1519 | assert(path); |
4ad36844 | 1520 | |
f17a8d61 FB |
1521 | if (!creation) |
1522 | creation = &c; | |
1523 | ||
4c39d899 FB |
1524 | pfd = path_open_parent_safe(path); |
1525 | if (pfd < 0) | |
1526 | return pfd; | |
4ad36844 | 1527 | |
4c39d899 | 1528 | if (subvol) { |
4ad36844 FB |
1529 | if (btrfs_is_subvol(empty_to_root(arg_root)) <= 0) |
1530 | ||
1531 | /* Don't create a subvolume unless the root directory is | |
1532 | * one, too. We do this under the assumption that if the | |
1533 | * root directory is just a plain directory (i.e. very | |
1534 | * light-weight), we shouldn't try to split it up into | |
1535 | * subvolumes (i.e. more heavy-weight). Thus, chroot() | |
1536 | * environments and suchlike will get a full brtfs | |
1537 | * subvolume set up below their tree only if they | |
1538 | * specifically set up a btrfs subvolume for the root | |
1539 | * dir too. */ | |
1540 | ||
4c39d899 | 1541 | subvol = false; |
4ad36844 | 1542 | else { |
4c39d899 FB |
1543 | RUN_WITH_UMASK((~mode) & 0777) |
1544 | r = btrfs_subvol_make_fd(pfd, basename(path)); | |
4ad36844 FB |
1545 | } |
1546 | } else | |
1547 | r = 0; | |
1548 | ||
4c39d899 | 1549 | if (!subvol || r == -ENOTTY) |
4ad36844 | 1550 | RUN_WITH_UMASK(0000) |
4c39d899 | 1551 | r = mkdirat_label(pfd, basename(path), mode); |
4ad36844 FB |
1552 | |
1553 | if (r < 0) { | |
1554 | int k; | |
1555 | ||
1556 | if (!IN_SET(r, -EEXIST, -EROFS)) | |
4c39d899 | 1557 | return log_error_errno(r, "Failed to create directory or subvolume \"%s\": %m", path); |
4ad36844 | 1558 | |
4c39d899 | 1559 | k = is_dir_fd(pfd); |
4ad36844 | 1560 | if (k == -ENOENT && r == -EROFS) |
4c39d899 | 1561 | return log_error_errno(r, "%s does not exist and cannot be created as the file system is read-only.", path); |
4ad36844 | 1562 | if (k < 0) |
4c39d899 | 1563 | return log_error_errno(k, "Failed to check if %s exists: %m", path); |
4ad36844 | 1564 | if (!k) { |
4c39d899 FB |
1565 | log_warning("\"%s\" already exists and is not a directory.", path); |
1566 | return -EEXIST; | |
4ad36844 FB |
1567 | } |
1568 | ||
f17a8d61 | 1569 | *creation = CREATION_EXISTING; |
4ad36844 | 1570 | } else |
f17a8d61 | 1571 | *creation = CREATION_NORMAL; |
4ad36844 | 1572 | |
f17a8d61 | 1573 | log_debug("%s directory \"%s\".", creation_mode_verb_to_string(*creation), path); |
4c39d899 FB |
1574 | |
1575 | r = openat(pfd, basename(path), O_NOCTTY|O_CLOEXEC|O_DIRECTORY); | |
1576 | if (r < 0) | |
09f12798 LP |
1577 | return log_error_errno(errno, "Failed to open directory '%s': %m", basename(path)); |
1578 | ||
4c39d899 FB |
1579 | return r; |
1580 | } | |
1581 | ||
1582 | static int create_directory(Item *i, const char *path) { | |
1583 | _cleanup_close_ int fd = -1; | |
1584 | ||
1585 | assert(i); | |
1586 | assert(IN_SET(i->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY)); | |
1587 | ||
f17a8d61 | 1588 | fd = create_directory_or_subvolume(path, i->mode, false, NULL); |
4c39d899 FB |
1589 | if (fd == -EEXIST) |
1590 | return 0; | |
1591 | if (fd < 0) | |
1592 | return fd; | |
1593 | ||
9d874aec | 1594 | return fd_set_perms(i, fd, path, NULL); |
4c39d899 FB |
1595 | } |
1596 | ||
1597 | static int create_subvolume(Item *i, const char *path) { | |
1598 | _cleanup_close_ int fd = -1; | |
f17a8d61 | 1599 | CreationMode creation; |
4c39d899 FB |
1600 | int r, q = 0; |
1601 | ||
1602 | assert(i); | |
1603 | assert(IN_SET(i->type, CREATE_SUBVOLUME, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)); | |
1604 | ||
f17a8d61 | 1605 | fd = create_directory_or_subvolume(path, i->mode, true, &creation); |
4c39d899 FB |
1606 | if (fd == -EEXIST) |
1607 | return 0; | |
1608 | if (fd < 0) | |
1609 | return fd; | |
4ad36844 | 1610 | |
f17a8d61 FB |
1611 | if (creation == CREATION_NORMAL && |
1612 | IN_SET(i->type, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)) { | |
4c39d899 | 1613 | r = btrfs_subvol_auto_qgroup_fd(fd, 0, i->type == CREATE_SUBVOLUME_NEW_QUOTA); |
4ad36844 FB |
1614 | if (r == -ENOTTY) |
1615 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (unsupported fs or dir not a subvolume): %m", i->path); | |
1616 | else if (r == -EROFS) | |
1617 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (fs is read-only).", i->path); | |
1618 | else if (r == -ENOPROTOOPT) | |
1619 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (quota support is disabled).", i->path); | |
1620 | else if (r < 0) | |
1621 | q = log_error_errno(r, "Failed to adjust quota for subvolume \"%s\": %m", i->path); | |
1622 | else if (r > 0) | |
1623 | log_debug("Adjusted quota for subvolume \"%s\".", i->path); | |
1624 | else if (r == 0) | |
1625 | log_debug("Quota for subvolume \"%s\" already in place, no change made.", i->path); | |
1626 | } | |
1627 | ||
9d874aec LP |
1628 | r = fd_set_perms(i, fd, path, NULL); |
1629 | if (q < 0) /* prefer the quota change error from above */ | |
4ad36844 FB |
1630 | return q; |
1631 | ||
1632 | return r; | |
1633 | } | |
1634 | ||
54946021 FB |
1635 | static int empty_directory(Item *i, const char *path) { |
1636 | int r; | |
1637 | ||
1638 | assert(i); | |
1639 | assert(i->type == EMPTY_DIRECTORY); | |
1640 | ||
1641 | r = is_dir(path, false); | |
1642 | if (r == -ENOENT) { | |
1643 | /* Option "e" operates only on existing objects. Do not | |
1644 | * print errors about non-existent files or directories */ | |
1645 | log_debug("Skipping missing directory: %s", path); | |
1646 | return 0; | |
1647 | } | |
1648 | if (r < 0) | |
1649 | return log_error_errno(r, "is_dir() failed on path %s: %m", path); | |
baaa35ad ZJS |
1650 | if (r == 0) |
1651 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
1652 | "'%s' already exists and is not a directory.", | |
1653 | path); | |
54946021 FB |
1654 | |
1655 | return path_set_perms(i, path); | |
1656 | } | |
1657 | ||
074bd73f | 1658 | static int create_device(Item *i, mode_t file_type) { |
c7700a77 | 1659 | _cleanup_close_ int dfd = -1, fd = -1; |
074bd73f | 1660 | CreationMode creation; |
c7700a77 | 1661 | char *bn; |
074bd73f FB |
1662 | int r; |
1663 | ||
1664 | assert(i); | |
1665 | assert(IN_SET(file_type, S_IFBLK, S_IFCHR)); | |
1666 | ||
c7700a77 FB |
1667 | bn = basename(i->path); |
1668 | ||
1669 | /* Validate the path and use the returned directory fd for copying the | |
1670 | * target so we're sure that the path can't be changed behind our | |
1671 | * back. */ | |
1672 | dfd = path_open_parent_safe(i->path); | |
1673 | if (dfd < 0) | |
1674 | return dfd; | |
1675 | ||
074bd73f FB |
1676 | RUN_WITH_UMASK(0000) { |
1677 | mac_selinux_create_file_prepare(i->path, file_type); | |
c7700a77 | 1678 | r = mknodat(dfd, bn, i->mode | file_type, i->major_minor); |
074bd73f FB |
1679 | mac_selinux_create_file_clear(); |
1680 | } | |
1681 | ||
1682 | if (r < 0) { | |
c7700a77 FB |
1683 | struct stat st; |
1684 | ||
074bd73f FB |
1685 | if (errno == EPERM) { |
1686 | log_debug("We lack permissions, possibly because of cgroup configuration; " | |
1687 | "skipping creation of device node %s.", i->path); | |
1688 | return 0; | |
1689 | } | |
1690 | ||
1691 | if (errno != EEXIST) | |
1692 | return log_error_errno(errno, "Failed to create device node %s: %m", i->path); | |
1693 | ||
c7700a77 | 1694 | if (fstatat(dfd, bn, &st, 0) < 0) |
074bd73f FB |
1695 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); |
1696 | ||
1697 | if ((st.st_mode & S_IFMT) != file_type) { | |
1698 | ||
1699 | if (i->force) { | |
1700 | ||
1701 | RUN_WITH_UMASK(0000) { | |
1702 | mac_selinux_create_file_prepare(i->path, file_type); | |
c7700a77 | 1703 | /* FIXME: need to introduce mknodat_atomic() */ |
074bd73f FB |
1704 | r = mknod_atomic(i->path, i->mode | file_type, i->major_minor); |
1705 | mac_selinux_create_file_clear(); | |
1706 | } | |
1707 | ||
1708 | if (r < 0) | |
1709 | return log_error_errno(r, "Failed to create device node \"%s\": %m", i->path); | |
1710 | creation = CREATION_FORCE; | |
1711 | } else { | |
1712 | log_debug("%s is not a device node.", i->path); | |
1713 | return 0; | |
1714 | } | |
1715 | } else | |
1716 | creation = CREATION_EXISTING; | |
1717 | } else | |
1718 | creation = CREATION_NORMAL; | |
1719 | ||
1720 | log_debug("%s %s device node \"%s\" %u:%u.", | |
1721 | creation_mode_verb_to_string(creation), | |
1722 | i->type == CREATE_BLOCK_DEVICE ? "block" : "char", | |
1723 | i->path, major(i->mode), minor(i->mode)); | |
1724 | ||
c7700a77 FB |
1725 | fd = openat(dfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1726 | if (fd < 0) | |
1727 | return log_error_errno(errno, "Failed to openat(%s): %m", i->path); | |
1728 | ||
9d874aec | 1729 | return fd_set_perms(i, fd, i->path, NULL); |
074bd73f FB |
1730 | } |
1731 | ||
a2fc2f8d | 1732 | static int create_fifo(Item *i, const char *path) { |
7ea5a87f | 1733 | _cleanup_close_ int pfd = -1, fd = -1; |
a2fc2f8d FB |
1734 | CreationMode creation; |
1735 | struct stat st; | |
7ea5a87f | 1736 | char *bn; |
a2fc2f8d FB |
1737 | int r; |
1738 | ||
7ea5a87f FB |
1739 | pfd = path_open_parent_safe(path); |
1740 | if (pfd < 0) | |
1741 | return pfd; | |
1742 | ||
1743 | bn = basename(path); | |
1744 | ||
a2fc2f8d FB |
1745 | RUN_WITH_UMASK(0000) { |
1746 | mac_selinux_create_file_prepare(path, S_IFIFO); | |
7ea5a87f | 1747 | r = mkfifoat(pfd, bn, i->mode); |
a2fc2f8d FB |
1748 | mac_selinux_create_file_clear(); |
1749 | } | |
1750 | ||
1751 | if (r < 0) { | |
1752 | if (errno != EEXIST) | |
1753 | return log_error_errno(errno, "Failed to create fifo %s: %m", path); | |
1754 | ||
7ea5a87f | 1755 | if (fstatat(pfd, bn, &st, AT_SYMLINK_NOFOLLOW) < 0) |
a2fc2f8d FB |
1756 | return log_error_errno(errno, "stat(%s) failed: %m", path); |
1757 | ||
1758 | if (!S_ISFIFO(st.st_mode)) { | |
1759 | ||
1760 | if (i->force) { | |
1761 | RUN_WITH_UMASK(0000) { | |
1762 | mac_selinux_create_file_prepare(path, S_IFIFO); | |
7ea5a87f | 1763 | r = mkfifoat_atomic(pfd, bn, i->mode); |
a2fc2f8d FB |
1764 | mac_selinux_create_file_clear(); |
1765 | } | |
1766 | ||
1767 | if (r < 0) | |
1768 | return log_error_errno(r, "Failed to create fifo %s: %m", path); | |
1769 | creation = CREATION_FORCE; | |
1770 | } else { | |
1771 | log_warning("\"%s\" already exists and is not a fifo.", path); | |
1772 | return 0; | |
1773 | } | |
1774 | } else | |
1775 | creation = CREATION_EXISTING; | |
1776 | } else | |
1777 | creation = CREATION_NORMAL; | |
7ea5a87f | 1778 | |
a2fc2f8d FB |
1779 | log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation), path); |
1780 | ||
7ea5a87f FB |
1781 | fd = openat(pfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1782 | if (fd < 0) | |
a5df05ff | 1783 | return log_error_errno(errno, "Failed to openat(%s): %m", path); |
7ea5a87f | 1784 | |
9d874aec | 1785 | return fd_set_perms(i, fd, i->path, NULL); |
a2fc2f8d FB |
1786 | } |
1787 | ||
9d874aec LP |
1788 | typedef int (*action_t)(Item *i, const char *path); |
1789 | typedef int (*fdaction_t)(Item *i, int fd, const char *path, const struct stat *st); | |
081043cf | 1790 | |
9d874aec | 1791 | static int item_do(Item *i, int fd, const char *path, fdaction_t action) { |
14f3480a | 1792 | struct stat st; |
936f6bdb | 1793 | int r = 0, q; |
e73a03e0 LP |
1794 | |
1795 | assert(i); | |
4dc7bfdf | 1796 | assert(path); |
936f6bdb | 1797 | assert(fd >= 0); |
14f3480a FB |
1798 | |
1799 | if (fstat(fd, &st) < 0) { | |
09f12798 | 1800 | r = log_error_errno(errno, "fstat() on file failed: %m"); |
14f3480a FB |
1801 | goto finish; |
1802 | } | |
a8d88783 MS |
1803 | |
1804 | /* This returns the first error we run into, but nevertheless | |
1805 | * tries to go on */ | |
9d874aec | 1806 | r = action(i, fd, path, &st); |
a8d88783 | 1807 | |
14f3480a | 1808 | if (S_ISDIR(st.st_mode)) { |
22dd8d35 | 1809 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
936f6bdb FB |
1810 | _cleanup_closedir_ DIR *d = NULL; |
1811 | struct dirent *de; | |
a8d88783 | 1812 | |
936f6bdb FB |
1813 | /* The passed 'fd' was opened with O_PATH. We need to convert |
1814 | * it into a 'regular' fd before reading the directory content. */ | |
1815 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); | |
a8d88783 | 1816 | |
936f6bdb FB |
1817 | d = opendir(procfs_path); |
1818 | if (!d) { | |
09f12798 LP |
1819 | log_error_errno(errno, "Failed to opendir() '%s': %m", procfs_path); |
1820 | if (r == 0) | |
1821 | r = -errno; | |
936f6bdb FB |
1822 | goto finish; |
1823 | } | |
a8d88783 | 1824 | |
936f6bdb | 1825 | FOREACH_DIRENT_ALL(de, d, q = -errno; goto finish) { |
936f6bdb | 1826 | int de_fd; |
a8d88783 | 1827 | |
936f6bdb FB |
1828 | if (dot_or_dot_dot(de->d_name)) |
1829 | continue; | |
1830 | ||
1831 | de_fd = openat(fd, de->d_name, O_NOFOLLOW|O_CLOEXEC|O_PATH); | |
9d874aec LP |
1832 | if (de_fd < 0) |
1833 | q = log_error_errno(errno, "Failed to open() file '%s': %m", de->d_name); | |
4dc7bfdf FB |
1834 | else { |
1835 | _cleanup_free_ char *de_path = NULL; | |
1836 | ||
62a85ee0 | 1837 | de_path = path_join(path, de->d_name); |
4dc7bfdf FB |
1838 | if (!de_path) |
1839 | q = log_oom(); | |
1840 | else | |
1841 | /* Pass ownership of dirent fd over */ | |
1842 | q = item_do(i, de_fd, de_path, action); | |
1843 | } | |
a8d88783 | 1844 | |
e73a03e0 LP |
1845 | if (q < 0 && r == 0) |
1846 | r = q; | |
a8d88783 | 1847 | } |
a8d88783 | 1848 | } |
936f6bdb FB |
1849 | finish: |
1850 | safe_close(fd); | |
e73a03e0 | 1851 | return r; |
a8d88783 MS |
1852 | } |
1853 | ||
936f6bdb | 1854 | static int glob_item(Item *i, action_t action) { |
df99a9ef | 1855 | _cleanup_globfree_ glob_t g = { |
ebf31a1f | 1856 | .gl_opendir = (void *(*)(const char *)) opendir_nomod, |
df99a9ef | 1857 | }; |
e73a03e0 | 1858 | int r = 0, k; |
99e68c0b MS |
1859 | char **fn; |
1860 | ||
84e72b5e ZJS |
1861 | k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g); |
1862 | if (k < 0 && k != -ENOENT) | |
1863 | return log_error_errno(k, "glob(%s) failed: %m", i->path); | |
99e68c0b | 1864 | |
c84a9488 ZJS |
1865 | STRV_FOREACH(fn, g.gl_pathv) { |
1866 | k = action(i, *fn); | |
e73a03e0 | 1867 | if (k < 0 && r == 0) |
99e68c0b | 1868 | r = k; |
936f6bdb FB |
1869 | } |
1870 | ||
1871 | return r; | |
1872 | } | |
081043cf | 1873 | |
936f6bdb FB |
1874 | static int glob_item_recursively(Item *i, fdaction_t action) { |
1875 | _cleanup_globfree_ glob_t g = { | |
1876 | .gl_opendir = (void *(*)(const char *)) opendir_nomod, | |
1877 | }; | |
1878 | int r = 0, k; | |
1879 | char **fn; | |
1880 | ||
1881 | k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g); | |
1882 | if (k < 0 && k != -ENOENT) | |
1883 | return log_error_errno(k, "glob(%s) failed: %m", i->path); | |
1884 | ||
1885 | STRV_FOREACH(fn, g.gl_pathv) { | |
1886 | _cleanup_close_ int fd = -1; | |
936f6bdb FB |
1887 | |
1888 | /* Make sure we won't trigger/follow file object (such as | |
1889 | * device nodes, automounts, ...) pointed out by 'fn' with | |
1890 | * O_PATH. Note, when O_PATH is used, flags other than | |
1891 | * O_CLOEXEC, O_DIRECTORY, and O_NOFOLLOW are ignored. */ | |
1892 | ||
1893 | fd = open(*fn, O_CLOEXEC|O_NOFOLLOW|O_PATH); | |
1894 | if (fd < 0) { | |
09f12798 LP |
1895 | log_error_errno(errno, "Opening '%s' failed: %m", *fn); |
1896 | if (r == 0) | |
1897 | r = -errno; | |
936f6bdb FB |
1898 | continue; |
1899 | } | |
1900 | ||
9d874aec | 1901 | k = item_do(i, fd, *fn, action); |
936f6bdb FB |
1902 | if (k < 0 && r == 0) |
1903 | r = k; | |
1904 | ||
1905 | /* we passed fd ownership to the previous call */ | |
1906 | fd = -1; | |
c84a9488 | 1907 | } |
99e68c0b | 1908 | |
99e68c0b MS |
1909 | return r; |
1910 | } | |
1911 | ||
3b63d2d3 | 1912 | static int create_item(Item *i) { |
294929f8 | 1913 | CreationMode creation; |
a2fc2f8d | 1914 | int r = 0; |
5008d581 | 1915 | |
3b63d2d3 | 1916 | assert(i); |
5008d581 | 1917 | |
582deb84 ZJS |
1918 | log_debug("Running create action for entry %c %s", (char) i->type, i->path); |
1919 | ||
3b63d2d3 LP |
1920 | switch (i->type) { |
1921 | ||
1922 | case IGNORE_PATH: | |
78a92a5a | 1923 | case IGNORE_DIRECTORY_PATH: |
3b63d2d3 LP |
1924 | case REMOVE_PATH: |
1925 | case RECURSIVE_REMOVE_PATH: | |
1926 | return 0; | |
5008d581 | 1927 | |
3b63d2d3 | 1928 | case CREATE_FILE: |
7fa10748 LP |
1929 | RUN_WITH_UMASK(0000) |
1930 | (void) mkdir_parents_label(i->path, 0755); | |
1931 | ||
31c84ff1 | 1932 | r = create_file(i, i->path); |
1845fdd9 DR |
1933 | if (r < 0) |
1934 | return r; | |
1935 | break; | |
265ffa1e | 1936 | |
5ec9d065 FB |
1937 | case TRUNCATE_FILE: |
1938 | RUN_WITH_UMASK(0000) | |
1939 | (void) mkdir_parents_label(i->path, 0755); | |
1940 | ||
1941 | r = truncate_file(i, i->path); | |
1942 | if (r < 0) | |
1943 | return r; | |
1944 | break; | |
1945 | ||
7b887f22 | 1946 | case COPY_FILES: |
7fa10748 LP |
1947 | RUN_WITH_UMASK(0000) |
1948 | (void) mkdir_parents_label(i->path, 0755); | |
1949 | ||
b1f7b17f | 1950 | r = copy_files(i); |
849958d1 LP |
1951 | if (r < 0) |
1952 | return r; | |
849958d1 LP |
1953 | break; |
1954 | ||
d4e9eb91 | 1955 | case WRITE_FILE: |
936f6bdb | 1956 | r = glob_item(i, write_one_file); |
f05bc3f7 MS |
1957 | if (r < 0) |
1958 | return r; | |
5008d581 | 1959 | |
3b63d2d3 LP |
1960 | break; |
1961 | ||
3b63d2d3 | 1962 | case CREATE_DIRECTORY: |
d7b8eec7 | 1963 | case TRUNCATE_DIRECTORY: |
4c39d899 FB |
1964 | RUN_WITH_UMASK(0000) |
1965 | (void) mkdir_parents_label(i->path, 0755); | |
1966 | ||
1967 | r = create_directory(i, i->path); | |
1968 | if (r < 0) | |
1969 | return r; | |
1970 | break; | |
1971 | ||
d7b8eec7 | 1972 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
1973 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
1974 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
d7b8eec7 | 1975 | RUN_WITH_UMASK(0000) |
7fa10748 | 1976 | (void) mkdir_parents_label(i->path, 0755); |
d7b8eec7 | 1977 | |
4c39d899 | 1978 | r = create_subvolume(i, i->path); |
4ad36844 FB |
1979 | if (r < 0) |
1980 | return r; | |
1981 | break; | |
5fb13eb5 | 1982 | |
df8dee85 | 1983 | case EMPTY_DIRECTORY: |
54946021 | 1984 | r = glob_item(i, empty_directory); |
f05bc3f7 MS |
1985 | if (r < 0) |
1986 | return r; | |
3b63d2d3 | 1987 | break; |
ee17ee7c LP |
1988 | |
1989 | case CREATE_FIFO: | |
a2fc2f8d | 1990 | RUN_WITH_UMASK(0000) |
7fa10748 LP |
1991 | (void) mkdir_parents_label(i->path, 0755); |
1992 | ||
a2fc2f8d | 1993 | r = create_fifo(i, i->path); |
f05bc3f7 MS |
1994 | if (r < 0) |
1995 | return r; | |
ee17ee7c | 1996 | break; |
a8d88783 | 1997 | |
5c5ccf12 | 1998 | case CREATE_SYMLINK: { |
7fa10748 LP |
1999 | RUN_WITH_UMASK(0000) |
2000 | (void) mkdir_parents_label(i->path, 0755); | |
2001 | ||
ecabcf8b | 2002 | mac_selinux_create_file_prepare(i->path, S_IFLNK); |
4cef1923 | 2003 | r = symlink(i->argument, i->path); |
ecabcf8b | 2004 | mac_selinux_create_file_clear(); |
e9a5ef7c | 2005 | |
468d726b | 2006 | if (r < 0) { |
2e78fa79 | 2007 | _cleanup_free_ char *x = NULL; |
468d726b | 2008 | |
4a62c710 | 2009 | if (errno != EEXIST) |
4cef1923 | 2010 | return log_error_errno(errno, "symlink(%s, %s) failed: %m", i->argument, i->path); |
2e78fa79 LP |
2011 | |
2012 | r = readlink_malloc(i->path, &x); | |
4cef1923 | 2013 | if (r < 0 || !streq(i->argument, x)) { |
2e78fa79 LP |
2014 | |
2015 | if (i->force) { | |
ecabcf8b | 2016 | mac_selinux_create_file_prepare(i->path, S_IFLNK); |
4cef1923 | 2017 | r = symlink_atomic(i->argument, i->path); |
ecabcf8b | 2018 | mac_selinux_create_file_clear(); |
2e78fa79 | 2019 | |
2ef5de1b | 2020 | if (IN_SET(r, -EISDIR, -EEXIST, -ENOTEMPTY)) { |
b3f5897f WD |
2021 | r = rm_rf(i->path, REMOVE_ROOT|REMOVE_PHYSICAL); |
2022 | if (r < 0) | |
2023 | return log_error_errno(r, "rm -fr %s failed: %m", i->path); | |
2024 | ||
2025 | mac_selinux_create_file_prepare(i->path, S_IFLNK); | |
4cef1923 | 2026 | r = symlink(i->argument, i->path) < 0 ? -errno : 0; |
b3f5897f WD |
2027 | mac_selinux_create_file_clear(); |
2028 | } | |
f647962d | 2029 | if (r < 0) |
4cef1923 | 2030 | return log_error_errno(r, "symlink(%s, %s) failed: %m", i->argument, i->path); |
a542c4dc | 2031 | |
294929f8 | 2032 | creation = CREATION_FORCE; |
1554afae | 2033 | } else { |
582deb84 | 2034 | log_debug("\"%s\" is not a symlink or does not point to the correct path.", i->path); |
1554afae LP |
2035 | return 0; |
2036 | } | |
294929f8 ZJS |
2037 | } else |
2038 | creation = CREATION_EXISTING; | |
2039 | } else | |
a542c4dc | 2040 | |
294929f8 | 2041 | creation = CREATION_NORMAL; |
7a7d5db7 | 2042 | log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation), i->path); |
468d726b | 2043 | break; |
5c5ccf12 | 2044 | } |
468d726b LP |
2045 | |
2046 | case CREATE_BLOCK_DEVICE: | |
074bd73f | 2047 | case CREATE_CHAR_DEVICE: |
cb7ed9df | 2048 | if (have_effective_cap(CAP_MKNOD) == 0) { |
713998cf LP |
2049 | /* In a container we lack CAP_MKNOD. We shouldn't attempt to create the device node in that |
2050 | * case to avoid noise, and we don't support virtualized devices in containers anyway. */ | |
cb7ed9df LP |
2051 | |
2052 | log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path); | |
2053 | return 0; | |
2054 | } | |
2055 | ||
7fa10748 LP |
2056 | RUN_WITH_UMASK(0000) |
2057 | (void) mkdir_parents_label(i->path, 0755); | |
2058 | ||
074bd73f | 2059 | r = create_device(i, i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR); |
468d726b LP |
2060 | if (r < 0) |
2061 | return r; | |
2062 | ||
2063 | break; | |
468d726b | 2064 | |
e73a03e0 | 2065 | case ADJUST_MODE: |
777b87e7 | 2066 | case RELABEL_PATH: |
936f6bdb | 2067 | r = glob_item(i, path_set_perms); |
777b87e7 | 2068 | if (r < 0) |
96ca8194 | 2069 | return r; |
777b87e7 MS |
2070 | break; |
2071 | ||
a8d88783 | 2072 | case RECURSIVE_RELABEL_PATH: |
936f6bdb | 2073 | r = glob_item_recursively(i, fd_set_perms); |
a8d88783 MS |
2074 | if (r < 0) |
2075 | return r; | |
ebf4e801 | 2076 | break; |
e73a03e0 | 2077 | |
ebf4e801 | 2078 | case SET_XATTR: |
936f6bdb | 2079 | r = glob_item(i, path_set_xattrs); |
b705ab6a ZJS |
2080 | if (r < 0) |
2081 | return r; | |
2082 | break; | |
2083 | ||
2084 | case RECURSIVE_SET_XATTR: | |
936f6bdb | 2085 | r = glob_item_recursively(i, fd_set_xattrs); |
ebf4e801 MW |
2086 | if (r < 0) |
2087 | return r; | |
e73a03e0 | 2088 | break; |
f8eeeaf9 ZJS |
2089 | |
2090 | case SET_ACL: | |
936f6bdb | 2091 | r = glob_item(i, path_set_acls); |
f8eeeaf9 ZJS |
2092 | if (r < 0) |
2093 | return r; | |
b705ab6a ZJS |
2094 | break; |
2095 | ||
2096 | case RECURSIVE_SET_ACL: | |
936f6bdb | 2097 | r = glob_item_recursively(i, fd_set_acls); |
b705ab6a ZJS |
2098 | if (r < 0) |
2099 | return r; | |
2100 | break; | |
22c3a6ca | 2101 | |
88ec4dfa | 2102 | case SET_ATTRIBUTE: |
936f6bdb | 2103 | r = glob_item(i, path_set_attribute); |
22c3a6ca GB |
2104 | if (r < 0) |
2105 | return r; | |
2106 | break; | |
2107 | ||
88ec4dfa | 2108 | case RECURSIVE_SET_ATTRIBUTE: |
936f6bdb | 2109 | r = glob_item_recursively(i, fd_set_attribute); |
22c3a6ca GB |
2110 | if (r < 0) |
2111 | return r; | |
2112 | break; | |
3b63d2d3 LP |
2113 | } |
2114 | ||
f05bc3f7 | 2115 | return 0; |
3b63d2d3 LP |
2116 | } |
2117 | ||
a0896123 | 2118 | static int remove_item_instance(Item *i, const char *instance) { |
3b63d2d3 LP |
2119 | int r; |
2120 | ||
2121 | assert(i); | |
2122 | ||
2123 | switch (i->type) { | |
2124 | ||
3b63d2d3 | 2125 | case REMOVE_PATH: |
4a62c710 | 2126 | if (remove(instance) < 0 && errno != ENOENT) |
3f93da98 | 2127 | return log_error_errno(errno, "rm(%s): %m", instance); |
3b63d2d3 LP |
2128 | |
2129 | break; | |
2130 | ||
3b63d2d3 | 2131 | case RECURSIVE_REMOVE_PATH: |
2c575977 | 2132 | /* FIXME: we probably should use dir_cleanup() here instead of rm_rf() so that 'x' is honoured. */ |
582deb84 | 2133 | log_debug("rm -rf \"%s\"", instance); |
2c575977 | 2134 | r = rm_rf(instance, REMOVE_ROOT|REMOVE_SUBVOLUME|REMOVE_PHYSICAL); |
f647962d MS |
2135 | if (r < 0 && r != -ENOENT) |
2136 | return log_error_errno(r, "rm_rf(%s): %m", instance); | |
3b63d2d3 LP |
2137 | |
2138 | break; | |
7fcb4b9b ZJS |
2139 | |
2140 | default: | |
2141 | assert_not_reached("wut?"); | |
3b63d2d3 LP |
2142 | } |
2143 | ||
2144 | return 0; | |
2145 | } | |
2146 | ||
a0896123 | 2147 | static int remove_item(Item *i) { |
2c575977 LP |
2148 | int r; |
2149 | ||
b8bb3e8f LP |
2150 | assert(i); |
2151 | ||
582deb84 ZJS |
2152 | log_debug("Running remove action for entry %c %s", (char) i->type, i->path); |
2153 | ||
b8bb3e8f LP |
2154 | switch (i->type) { |
2155 | ||
b8bb3e8f | 2156 | case TRUNCATE_DIRECTORY: |
2c575977 LP |
2157 | /* FIXME: we probably should use dir_cleanup() here instead of rm_rf() so that 'x' is honoured. */ |
2158 | log_debug("rm -rf \"%s\"", i->path); | |
2159 | r = rm_rf(i->path, REMOVE_PHYSICAL); | |
2160 | if (r < 0 && r != -ENOENT) | |
2161 | return log_error_errno(r, "rm_rf(%s): %m", i->path); | |
2162 | ||
2163 | return 0; | |
2164 | ||
2165 | case REMOVE_PATH: | |
99e68c0b | 2166 | case RECURSIVE_REMOVE_PATH: |
936f6bdb | 2167 | return glob_item(i, remove_item_instance); |
b8bb3e8f | 2168 | |
df8dee85 ZJS |
2169 | default: |
2170 | return 0; | |
2171 | } | |
b8bb3e8f LP |
2172 | } |
2173 | ||
78a92a5a | 2174 | static int clean_item_instance(Item *i, const char* instance) { |
7fd1b19b | 2175 | _cleanup_closedir_ DIR *d = NULL; |
78a92a5a MS |
2176 | struct stat s, ps; |
2177 | bool mountpoint; | |
78a92a5a | 2178 | usec_t cutoff, n; |
582deb84 | 2179 | char timestamp[FORMAT_TIMESTAMP_MAX]; |
78a92a5a MS |
2180 | |
2181 | assert(i); | |
2182 | ||
2183 | if (!i->age_set) | |
2184 | return 0; | |
2185 | ||
2186 | n = now(CLOCK_REALTIME); | |
2187 | if (n < i->age) | |
2188 | return 0; | |
2189 | ||
2190 | cutoff = n - i->age; | |
2191 | ||
df99a9ef | 2192 | d = opendir_nomod(instance); |
78a92a5a | 2193 | if (!d) { |
d710aaf7 | 2194 | if (IN_SET(errno, ENOENT, ENOTDIR)) { |
582deb84 | 2195 | log_debug_errno(errno, "Directory \"%s\": %m", instance); |
78a92a5a | 2196 | return 0; |
582deb84 | 2197 | } |
78a92a5a | 2198 | |
d710aaf7 | 2199 | return log_error_errno(errno, "Failed to open directory %s: %m", instance); |
78a92a5a MS |
2200 | } |
2201 | ||
4a62c710 MS |
2202 | if (fstat(dirfd(d), &s) < 0) |
2203 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); | |
78a92a5a | 2204 | |
baaa35ad ZJS |
2205 | if (!S_ISDIR(s.st_mode)) |
2206 | return log_error_errno(SYNTHETIC_ERRNO(ENOTDIR), | |
2207 | "%s is not a directory.", i->path); | |
78a92a5a | 2208 | |
4a62c710 MS |
2209 | if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) |
2210 | return log_error_errno(errno, "stat(%s/..) failed: %m", i->path); | |
78a92a5a | 2211 | |
2bb158c1 | 2212 | mountpoint = s.st_dev != ps.st_dev || s.st_ino == ps.st_ino; |
78a92a5a | 2213 | |
582deb84 ZJS |
2214 | log_debug("Cleanup threshold for %s \"%s\" is %s", |
2215 | mountpoint ? "mount point" : "directory", | |
2216 | instance, | |
2217 | format_timestamp_us(timestamp, sizeof(timestamp), cutoff)); | |
2218 | ||
2219 | return dir_cleanup(i, instance, d, &s, cutoff, s.st_dev, mountpoint, | |
2220 | MAX_DEPTH, i->keep_first_level); | |
78a92a5a MS |
2221 | } |
2222 | ||
2223 | static int clean_item(Item *i) { | |
78a92a5a MS |
2224 | assert(i); |
2225 | ||
582deb84 ZJS |
2226 | log_debug("Running clean action for entry %c %s", (char) i->type, i->path); |
2227 | ||
78a92a5a MS |
2228 | switch (i->type) { |
2229 | case CREATE_DIRECTORY: | |
d7b8eec7 | 2230 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
2231 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
2232 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
78a92a5a MS |
2233 | case TRUNCATE_DIRECTORY: |
2234 | case IGNORE_PATH: | |
849958d1 | 2235 | case COPY_FILES: |
78a92a5a | 2236 | clean_item_instance(i, i->path); |
df8dee85 | 2237 | return 0; |
65241c14 | 2238 | case EMPTY_DIRECTORY: |
78a92a5a | 2239 | case IGNORE_DIRECTORY_PATH: |
936f6bdb | 2240 | return glob_item(i, clean_item_instance); |
78a92a5a | 2241 | default: |
df8dee85 | 2242 | return 0; |
78a92a5a | 2243 | } |
78a92a5a MS |
2244 | } |
2245 | ||
599ebe29 | 2246 | static int process_item(Item *i, OperationMask operation) { |
811a1587 LP |
2247 | OperationMask todo; |
2248 | int r, q, p; | |
3b63d2d3 LP |
2249 | |
2250 | assert(i); | |
2251 | ||
811a1587 LP |
2252 | todo = operation & ~i->done; |
2253 | if (todo == 0) /* Everything already done? */ | |
1910cd0e LP |
2254 | return 0; |
2255 | ||
811a1587 | 2256 | i->done |= operation; |
1910cd0e | 2257 | |
145b8d0f | 2258 | r = chase_symlinks(i->path, NULL, CHASE_NO_AUTOFS|CHASE_WARN, NULL); |
21af3386 | 2259 | if (r == -EREMOTE) { |
145b8d0f | 2260 | log_notice_errno(r, "Skipping %s", i->path); |
811a1587 | 2261 | return 0; |
145b8d0f FB |
2262 | } |
2263 | if (r < 0) | |
48d96904 | 2264 | log_debug_errno(r, "Failed to determine whether '%s' is below autofs, ignoring: %m", i->path); |
655f2da0 | 2265 | |
599ebe29 | 2266 | r = FLAGS_SET(operation, OPERATION_CREATE) ? create_item(i) : 0; |
6d7b5433 WD |
2267 | /* Failure can only be tolerated for create */ |
2268 | if (i->allow_failure) | |
2269 | r = 0; | |
3b63d2d3 | 2270 | |
599ebe29 LP |
2271 | q = FLAGS_SET(operation, OPERATION_REMOVE) ? remove_item(i) : 0; |
2272 | p = FLAGS_SET(operation, OPERATION_CLEAN) ? clean_item(i) : 0; | |
1a967b6b | 2273 | |
811a1587 | 2274 | return r < 0 ? r : |
1db50423 ZJS |
2275 | q < 0 ? q : |
2276 | p; | |
3b63d2d3 LP |
2277 | } |
2278 | ||
599ebe29 | 2279 | static int process_item_array(ItemArray *array, OperationMask operation) { |
96d10d78 LP |
2280 | int r = 0; |
2281 | size_t n; | |
753615e8 | 2282 | |
3f93da98 ZJS |
2283 | assert(array); |
2284 | ||
811a1587 LP |
2285 | /* Create any parent first. */ |
2286 | if (FLAGS_SET(operation, OPERATION_CREATE) && array->parent) | |
2287 | r = process_item_array(array->parent, operation & OPERATION_CREATE); | |
2288 | ||
2289 | /* Clean up all children first */ | |
2290 | if ((operation & (OPERATION_REMOVE|OPERATION_CLEAN)) && !set_isempty(array->children)) { | |
2291 | Iterator i; | |
2292 | ItemArray *c; | |
2293 | ||
2294 | SET_FOREACH(c, array->children, i) { | |
2295 | int k; | |
2296 | ||
2297 | k = process_item_array(c, operation & (OPERATION_REMOVE|OPERATION_CLEAN)); | |
2298 | if (k < 0 && r == 0) | |
2299 | r = k; | |
2300 | } | |
2301 | } | |
2302 | ||
96d10d78 LP |
2303 | for (n = 0; n < array->n_items; n++) { |
2304 | int k; | |
2305 | ||
599ebe29 | 2306 | k = process_item(array->items + n, operation); |
3f93da98 ZJS |
2307 | if (k < 0 && r == 0) |
2308 | r = k; | |
2309 | } | |
2310 | ||
2311 | return r; | |
2312 | } | |
3b63d2d3 | 2313 | |
3f93da98 ZJS |
2314 | static void item_free_contents(Item *i) { |
2315 | assert(i); | |
3b63d2d3 | 2316 | free(i->path); |
468d726b | 2317 | free(i->argument); |
ebf4e801 | 2318 | strv_free(i->xattrs); |
f8eeeaf9 | 2319 | |
349cc4a5 | 2320 | #if HAVE_ACL |
f8eeeaf9 ZJS |
2321 | acl_free(i->acl_access); |
2322 | acl_free(i->acl_default); | |
2323 | #endif | |
3b63d2d3 LP |
2324 | } |
2325 | ||
87938c3b | 2326 | static ItemArray* item_array_free(ItemArray *a) { |
96d10d78 | 2327 | size_t n; |
3f93da98 ZJS |
2328 | |
2329 | if (!a) | |
87938c3b | 2330 | return NULL; |
3f93da98 | 2331 | |
96d10d78 | 2332 | for (n = 0; n < a->n_items; n++) |
3f93da98 | 2333 | item_free_contents(a->items + n); |
96d10d78 | 2334 | |
811a1587 | 2335 | set_free(a->children); |
3f93da98 | 2336 | free(a->items); |
87938c3b | 2337 | return mfree(a); |
3f93da98 | 2338 | } |
e2f2fb78 | 2339 | |
93bab288 | 2340 | static int item_compare(const Item *a, const Item *b) { |
17493fa5 LP |
2341 | /* Make sure that the ownership taking item is put first, so |
2342 | * that we first create the node, and then can adjust it */ | |
2343 | ||
93bab288 | 2344 | if (takes_ownership(a->type) && !takes_ownership(b->type)) |
17493fa5 | 2345 | return -1; |
93bab288 | 2346 | if (!takes_ownership(a->type) && takes_ownership(b->type)) |
17493fa5 LP |
2347 | return 1; |
2348 | ||
93bab288 | 2349 | return CMP(a->type, b->type); |
17493fa5 LP |
2350 | } |
2351 | ||
3f93da98 | 2352 | static bool item_compatible(Item *a, Item *b) { |
bfe95f35 LP |
2353 | assert(a); |
2354 | assert(b); | |
3f93da98 | 2355 | assert(streq(a->path, b->path)); |
bfe95f35 | 2356 | |
3f93da98 ZJS |
2357 | if (takes_ownership(a->type) && takes_ownership(b->type)) |
2358 | /* check if the items are the same */ | |
2359 | return streq_ptr(a->argument, b->argument) && | |
bfe95f35 | 2360 | |
3f93da98 ZJS |
2361 | a->uid_set == b->uid_set && |
2362 | a->uid == b->uid && | |
bfe95f35 | 2363 | |
3f93da98 ZJS |
2364 | a->gid_set == b->gid_set && |
2365 | a->gid == b->gid && | |
bfe95f35 | 2366 | |
3f93da98 ZJS |
2367 | a->mode_set == b->mode_set && |
2368 | a->mode == b->mode && | |
bfe95f35 | 2369 | |
3f93da98 ZJS |
2370 | a->age_set == b->age_set && |
2371 | a->age == b->age && | |
bfe95f35 | 2372 | |
3f93da98 | 2373 | a->mask_perms == b->mask_perms && |
bfe95f35 | 2374 | |
3f93da98 | 2375 | a->keep_first_level == b->keep_first_level && |
468d726b | 2376 | |
3f93da98 | 2377 | a->major_minor == b->major_minor; |
468d726b | 2378 | |
bfe95f35 LP |
2379 | return true; |
2380 | } | |
2381 | ||
a2aced4a DR |
2382 | static bool should_include_path(const char *path) { |
2383 | char **prefix; | |
2384 | ||
abef3f91 | 2385 | STRV_FOREACH(prefix, arg_exclude_prefixes) |
582deb84 ZJS |
2386 | if (path_startswith(path, *prefix)) { |
2387 | log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.", | |
2388 | path, *prefix); | |
5c795114 | 2389 | return false; |
582deb84 | 2390 | } |
a2aced4a | 2391 | |
abef3f91 | 2392 | STRV_FOREACH(prefix, arg_include_prefixes) |
582deb84 ZJS |
2393 | if (path_startswith(path, *prefix)) { |
2394 | log_debug("Entry \"%s\" matches include prefix \"%s\".", path, *prefix); | |
a2aced4a | 2395 | return true; |
582deb84 | 2396 | } |
a2aced4a | 2397 | |
5c795114 DR |
2398 | /* no matches, so we should include this path only if we |
2399 | * have no whitelist at all */ | |
7b943bb7 | 2400 | if (strv_isempty(arg_include_prefixes)) |
582deb84 ZJS |
2401 | return true; |
2402 | ||
2403 | log_debug("Entry \"%s\" does not match any include prefix, skipping.", path); | |
2404 | return false; | |
a2aced4a DR |
2405 | } |
2406 | ||
4cef1923 FB |
2407 | static int specifier_expansion_from_arg(Item *i) { |
2408 | _cleanup_free_ char *unescaped = NULL, *resolved = NULL; | |
2409 | char **xattr; | |
2410 | int r; | |
2411 | ||
2412 | assert(i); | |
2413 | ||
2414 | if (i->argument == NULL) | |
2415 | return 0; | |
2416 | ||
2417 | switch (i->type) { | |
2418 | case COPY_FILES: | |
2419 | case CREATE_SYMLINK: | |
2420 | case CREATE_FILE: | |
2421 | case TRUNCATE_FILE: | |
2422 | case WRITE_FILE: | |
2423 | r = cunescape(i->argument, 0, &unescaped); | |
2424 | if (r < 0) | |
2425 | return log_error_errno(r, "Failed to unescape parameter to write: %s", i->argument); | |
2426 | ||
2427 | r = specifier_printf(unescaped, specifier_table, NULL, &resolved); | |
2428 | if (r < 0) | |
2429 | return r; | |
2430 | ||
2431 | free_and_replace(i->argument, resolved); | |
2432 | break; | |
2433 | ||
2434 | case SET_XATTR: | |
2435 | case RECURSIVE_SET_XATTR: | |
2436 | assert(i->xattrs); | |
2437 | ||
2438 | STRV_FOREACH (xattr, i->xattrs) { | |
2439 | r = specifier_printf(*xattr, specifier_table, NULL, &resolved); | |
2440 | if (r < 0) | |
2441 | return r; | |
2442 | ||
2443 | free_and_replace(*xattr, resolved); | |
2444 | } | |
2445 | break; | |
2446 | ||
2447 | default: | |
2448 | break; | |
2449 | } | |
2450 | return 0; | |
2451 | } | |
2452 | ||
a2d1fb88 LP |
2453 | static int patch_var_run(const char *fname, unsigned line, char **path) { |
2454 | const char *k; | |
2455 | char *n; | |
2456 | ||
2457 | assert(path); | |
2458 | assert(*path); | |
2459 | ||
2460 | /* Optionally rewrites lines referencing /var/run/, to use /run/ instead. Why bother? tmpfiles merges lines in | |
2461 | * some cases and detects conflicts in others. If files/directories are specified through two equivalent lines | |
2462 | * this is problematic as neither case will be detected. Ideally we'd detect these cases by resolving symlinks | |
2463 | * early, but that's precisely not what we can do here as this code very likely is running very early on, at a | |
2464 | * time where the paths in question are not available yet, or even more importantly, our own tmpfiles rules | |
2465 | * might create the paths that are intermediary to the listed paths. We can't really cover the generic case, | |
2466 | * but the least we can do is cover the specific case of /var/run vs. /run, as /var/run is a legacy name for | |
2467 | * /run only, and we explicitly document that and require that on systemd systems the former is a symlink to | |
2468 | * the latter. Moreover files below this path are by far the primary usecase for tmpfiles.d/. */ | |
2469 | ||
2470 | k = path_startswith(*path, "/var/run/"); | |
2471 | if (isempty(k)) /* Don't complain about other paths than /var/run, and not about /var/run itself either. */ | |
2472 | return 0; | |
2473 | ||
2474 | n = strjoin("/run/", k); | |
2475 | if (!n) | |
2476 | return log_oom(); | |
2477 | ||
2478 | /* Also log about this briefly. We do so at LOG_NOTICE level, as we fixed up the situation automatically, hence | |
2479 | * there's no immediate need for action by the user. However, in the interest of making things less confusing | |
2480 | * to the user, let's still inform the user that these snippets should really be updated. */ | |
2481 | ||
2482 | log_notice("[%s:%u] Line references path below legacy directory /var/run/, updating %s → %s; please update the tmpfiles.d/ drop-in file accordingly.", fname, line, *path, n); | |
2483 | ||
81fa4479 | 2484 | free_and_replace(*path, n); |
a2d1fb88 LP |
2485 | |
2486 | return 0; | |
2487 | } | |
2488 | ||
d9daae55 | 2489 | static int parse_line(const char *fname, unsigned line, const char *buffer, bool *invalid_config) { |
1731e34a | 2490 | |
cde684a2 | 2491 | _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL; |
3f93da98 ZJS |
2492 | _cleanup_(item_free_contents) Item i = {}; |
2493 | ItemArray *existing; | |
ef43a391 | 2494 | OrderedHashmap *h; |
657cf7f4 | 2495 | int r, pos; |
6d7b5433 | 2496 | bool force = false, boot = false, allow_failure = false; |
3b63d2d3 LP |
2497 | |
2498 | assert(fname); | |
2499 | assert(line >= 1); | |
2500 | assert(buffer); | |
2501 | ||
68685607 | 2502 | r = extract_many_words( |
4034a06d | 2503 | &buffer, |
68685607 | 2504 | NULL, |
12ba2c44 | 2505 | EXTRACT_QUOTES, |
4034a06d LP |
2506 | &action, |
2507 | &path, | |
2508 | &mode, | |
2509 | &user, | |
2510 | &group, | |
2511 | &age, | |
2512 | NULL); | |
d9daae55 | 2513 | if (r < 0) { |
751223fe ZJS |
2514 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
2515 | /* invalid quoting and such or an unknown specifier */ | |
d9daae55 | 2516 | *invalid_config = true; |
657cf7f4 | 2517 | return log_error_errno(r, "[%s:%u] Failed to parse line: %m", fname, line); |
4b93699d | 2518 | } else if (r < 2) { |
d9daae55 | 2519 | *invalid_config = true; |
3b63d2d3 | 2520 | log_error("[%s:%u] Syntax error.", fname, line); |
7f2c1f4d | 2521 | return -EIO; |
5008d581 LP |
2522 | } |
2523 | ||
aa5f6817 | 2524 | if (!isempty(buffer) && !streq(buffer, "-")) { |
4034a06d LP |
2525 | i.argument = strdup(buffer); |
2526 | if (!i.argument) | |
2527 | return log_oom(); | |
2528 | } | |
2529 | ||
2e78fa79 | 2530 | if (isempty(action)) { |
d9daae55 | 2531 | *invalid_config = true; |
2e78fa79 | 2532 | log_error("[%s:%u] Command too short '%s'.", fname, line, action); |
c4708f13 | 2533 | return -EINVAL; |
2e78fa79 LP |
2534 | } |
2535 | ||
5f255144 ZJS |
2536 | for (pos = 1; action[pos]; pos++) { |
2537 | if (action[pos] == '!' && !boot) | |
2538 | boot = true; | |
2539 | else if (action[pos] == '+' && !force) | |
2540 | force = true; | |
6d7b5433 WD |
2541 | else if (action[pos] == '-' && !allow_failure) |
2542 | allow_failure = true; | |
5f255144 | 2543 | else { |
d9daae55 | 2544 | *invalid_config = true; |
5f255144 ZJS |
2545 | log_error("[%s:%u] Unknown modifiers in command '%s'", |
2546 | fname, line, action); | |
2547 | return -EINVAL; | |
2548 | } | |
2e78fa79 LP |
2549 | } |
2550 | ||
582deb84 ZJS |
2551 | if (boot && !arg_boot) { |
2552 | log_debug("Ignoring entry %s \"%s\" because --boot is not specified.", | |
2553 | action, path); | |
c4708f13 | 2554 | return 0; |
582deb84 | 2555 | } |
c4708f13 | 2556 | |
3f93da98 ZJS |
2557 | i.type = action[0]; |
2558 | i.force = force; | |
6d7b5433 | 2559 | i.allow_failure = allow_failure; |
2e78fa79 | 2560 | |
3f93da98 | 2561 | r = specifier_printf(path, specifier_table, NULL, &i.path); |
5a8575ef | 2562 | if (r == -ENXIO) |
4cef1923 | 2563 | return log_unresolvable_specifier(fname, line); |
d9daae55 | 2564 | if (r < 0) { |
751223fe ZJS |
2565 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
2566 | *invalid_config = true; | |
4cef1923 | 2567 | return log_error_errno(r, "[%s:%u] Failed to replace specifiers: %s", fname, line, path); |
d9daae55 | 2568 | } |
1731e34a | 2569 | |
a2d1fb88 LP |
2570 | r = patch_var_run(fname, line, &i.path); |
2571 | if (r < 0) | |
2572 | return r; | |
2573 | ||
3f93da98 | 2574 | switch (i.type) { |
468d726b | 2575 | |
777b87e7 | 2576 | case CREATE_DIRECTORY: |
d7b8eec7 | 2577 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
2578 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
2579 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
df8dee85 | 2580 | case EMPTY_DIRECTORY: |
777b87e7 MS |
2581 | case TRUNCATE_DIRECTORY: |
2582 | case CREATE_FIFO: | |
2583 | case IGNORE_PATH: | |
78a92a5a | 2584 | case IGNORE_DIRECTORY_PATH: |
777b87e7 MS |
2585 | case REMOVE_PATH: |
2586 | case RECURSIVE_REMOVE_PATH: | |
e73a03e0 | 2587 | case ADJUST_MODE: |
777b87e7 MS |
2588 | case RELABEL_PATH: |
2589 | case RECURSIVE_RELABEL_PATH: | |
c82500c6 | 2590 | if (i.argument) |
bd550f78 | 2591 | log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname, line, i.type); |
c82500c6 LP |
2592 | |
2593 | break; | |
2594 | ||
2595 | case CREATE_FILE: | |
2596 | case TRUNCATE_FILE: | |
777b87e7 | 2597 | break; |
468d726b LP |
2598 | |
2599 | case CREATE_SYMLINK: | |
3f93da98 ZJS |
2600 | if (!i.argument) { |
2601 | i.argument = strappend("/usr/share/factory/", i.path); | |
2602 | if (!i.argument) | |
2f3b873a | 2603 | return log_oom(); |
468d726b LP |
2604 | } |
2605 | break; | |
2606 | ||
31ed59c5 | 2607 | case WRITE_FILE: |
3f93da98 | 2608 | if (!i.argument) { |
d9daae55 | 2609 | *invalid_config = true; |
31ed59c5 | 2610 | log_error("[%s:%u] Write file requires argument.", fname, line); |
7f2c1f4d | 2611 | return -EBADMSG; |
31ed59c5 LP |
2612 | } |
2613 | break; | |
2614 | ||
849958d1 | 2615 | case COPY_FILES: |
3f93da98 ZJS |
2616 | if (!i.argument) { |
2617 | i.argument = strappend("/usr/share/factory/", i.path); | |
2618 | if (!i.argument) | |
2f3b873a | 2619 | return log_oom(); |
3f93da98 | 2620 | } else if (!path_is_absolute(i.argument)) { |
d9daae55 | 2621 | *invalid_config = true; |
849958d1 LP |
2622 | log_error("[%s:%u] Source path is not absolute.", fname, line); |
2623 | return -EBADMSG; | |
2624 | } | |
2625 | ||
858d36c1 | 2626 | path_simplify(i.argument, false); |
849958d1 LP |
2627 | break; |
2628 | ||
468d726b | 2629 | case CREATE_CHAR_DEVICE: |
3a47c40d | 2630 | case CREATE_BLOCK_DEVICE: |
3f93da98 | 2631 | if (!i.argument) { |
d9daae55 | 2632 | *invalid_config = true; |
468d726b | 2633 | log_error("[%s:%u] Device file requires argument.", fname, line); |
7f2c1f4d | 2634 | return -EBADMSG; |
468d726b LP |
2635 | } |
2636 | ||
3a47c40d LP |
2637 | r = parse_dev(i.argument, &i.major_minor); |
2638 | if (r < 0) { | |
d9daae55 | 2639 | *invalid_config = true; |
3a47c40d | 2640 | log_error_errno(r, "[%s:%u] Can't parse device file major/minor '%s'.", fname, line, i.argument); |
7f2c1f4d | 2641 | return -EBADMSG; |
468d726b LP |
2642 | } |
2643 | ||
468d726b | 2644 | break; |
468d726b | 2645 | |
ebf4e801 | 2646 | case SET_XATTR: |
b705ab6a | 2647 | case RECURSIVE_SET_XATTR: |
3f93da98 | 2648 | if (!i.argument) { |
d9daae55 | 2649 | *invalid_config = true; |
ebf4e801 MW |
2650 | log_error("[%s:%u] Set extended attribute requires argument.", fname, line); |
2651 | return -EBADMSG; | |
2652 | } | |
bd550f78 | 2653 | r = parse_xattrs_from_arg(&i); |
ebf4e801 MW |
2654 | if (r < 0) |
2655 | return r; | |
2656 | break; | |
2657 | ||
f8eeeaf9 | 2658 | case SET_ACL: |
b705ab6a | 2659 | case RECURSIVE_SET_ACL: |
f8eeeaf9 | 2660 | if (!i.argument) { |
d9daae55 | 2661 | *invalid_config = true; |
f8eeeaf9 ZJS |
2662 | log_error("[%s:%u] Set ACLs requires argument.", fname, line); |
2663 | return -EBADMSG; | |
2664 | } | |
bd550f78 | 2665 | r = parse_acls_from_arg(&i); |
f8eeeaf9 ZJS |
2666 | if (r < 0) |
2667 | return r; | |
2668 | break; | |
2669 | ||
88ec4dfa LP |
2670 | case SET_ATTRIBUTE: |
2671 | case RECURSIVE_SET_ATTRIBUTE: | |
22c3a6ca | 2672 | if (!i.argument) { |
d9daae55 | 2673 | *invalid_config = true; |
88ec4dfa | 2674 | log_error("[%s:%u] Set file attribute requires argument.", fname, line); |
22c3a6ca GB |
2675 | return -EBADMSG; |
2676 | } | |
bd550f78 | 2677 | r = parse_attribute_from_arg(&i); |
751223fe | 2678 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
d9daae55 | 2679 | *invalid_config = true; |
22c3a6ca GB |
2680 | if (r < 0) |
2681 | return r; | |
2682 | break; | |
2683 | ||
777b87e7 | 2684 | default: |
582deb84 | 2685 | log_error("[%s:%u] Unknown command type '%c'.", fname, line, (char) i.type); |
d9daae55 | 2686 | *invalid_config = true; |
7f2c1f4d | 2687 | return -EBADMSG; |
3b63d2d3 | 2688 | } |
468d726b | 2689 | |
3f93da98 ZJS |
2690 | if (!path_is_absolute(i.path)) { |
2691 | log_error("[%s:%u] Path '%s' not absolute.", fname, line, i.path); | |
d9daae55 | 2692 | *invalid_config = true; |
7f2c1f4d | 2693 | return -EBADMSG; |
3b63d2d3 LP |
2694 | } |
2695 | ||
858d36c1 | 2696 | path_simplify(i.path, false); |
3b63d2d3 | 2697 | |
3f93da98 | 2698 | if (!should_include_path(i.path)) |
7f2c1f4d | 2699 | return 0; |
5008d581 | 2700 | |
4cef1923 | 2701 | r = specifier_expansion_from_arg(&i); |
5a8575ef | 2702 | if (r == -ENXIO) |
4cef1923 | 2703 | return log_unresolvable_specifier(fname, line); |
751223fe ZJS |
2704 | if (r < 0) { |
2705 | if (IN_SET(r, -EINVAL, -EBADSLT)) | |
2706 | *invalid_config = true; | |
4cef1923 FB |
2707 | return log_error_errno(r, "[%s:%u] Failed to substitute specifiers in argument: %m", |
2708 | fname, line); | |
751223fe | 2709 | } |
4cef1923 | 2710 | |
cf9a4abd | 2711 | if (arg_root) { |
cde684a2 LP |
2712 | char *p; |
2713 | ||
1d13f648 | 2714 | p = prefix_root(arg_root, i.path); |
cf9a4abd MM |
2715 | if (!p) |
2716 | return log_oom(); | |
2717 | ||
81fa4479 | 2718 | free_and_replace(i.path, p); |
cf9a4abd MM |
2719 | } |
2720 | ||
90937fe3 | 2721 | if (!isempty(user) && !streq(user, "-")) { |
4b67834e LP |
2722 | const char *u = user; |
2723 | ||
fafff8f1 | 2724 | r = get_user_creds(&u, &i.uid, NULL, NULL, NULL, USER_CREDS_ALLOW_MISSING); |
4b67834e | 2725 | if (r < 0) { |
d9daae55 ZJS |
2726 | *invalid_config = true; |
2727 | return log_error_errno(r, "[%s:%u] Unknown user '%s'.", fname, line, user); | |
3b63d2d3 LP |
2728 | } |
2729 | ||
3f93da98 | 2730 | i.uid_set = true; |
3b63d2d3 LP |
2731 | } |
2732 | ||
90937fe3 | 2733 | if (!isempty(group) && !streq(group, "-")) { |
4b67834e LP |
2734 | const char *g = group; |
2735 | ||
fafff8f1 | 2736 | r = get_group_creds(&g, &i.gid, USER_CREDS_ALLOW_MISSING); |
4b67834e | 2737 | if (r < 0) { |
d9daae55 | 2738 | *invalid_config = true; |
3b63d2d3 | 2739 | log_error("[%s:%u] Unknown group '%s'.", fname, line, group); |
7f2c1f4d | 2740 | return r; |
3b63d2d3 LP |
2741 | } |
2742 | ||
3f93da98 | 2743 | i.gid_set = true; |
3b63d2d3 LP |
2744 | } |
2745 | ||
90937fe3 | 2746 | if (!isempty(mode) && !streq(mode, "-")) { |
abef3f91 | 2747 | const char *mm = mode; |
3b63d2d3 LP |
2748 | unsigned m; |
2749 | ||
abef3f91 | 2750 | if (*mm == '~') { |
3f93da98 | 2751 | i.mask_perms = true; |
abef3f91 LP |
2752 | mm++; |
2753 | } | |
2754 | ||
2ff7b0a5 | 2755 | if (parse_mode(mm, &m) < 0) { |
d9daae55 | 2756 | *invalid_config = true; |
3b63d2d3 | 2757 | log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode); |
2ff7b0a5 | 2758 | return -EBADMSG; |
3b63d2d3 LP |
2759 | } |
2760 | ||
3f93da98 ZJS |
2761 | i.mode = m; |
2762 | i.mode_set = true; | |
3b63d2d3 | 2763 | } else |
5fb13eb5 | 2764 | i.mode = IN_SET(i.type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA) ? 0755 : 0644; |
3b63d2d3 | 2765 | |
90937fe3 | 2766 | if (!isempty(age) && !streq(age, "-")) { |
24f3a374 LP |
2767 | const char *a = age; |
2768 | ||
2769 | if (*a == '~') { | |
3f93da98 | 2770 | i.keep_first_level = true; |
24f3a374 LP |
2771 | a++; |
2772 | } | |
2773 | ||
3f93da98 | 2774 | if (parse_sec(a, &i.age) < 0) { |
d9daae55 | 2775 | *invalid_config = true; |
3b63d2d3 | 2776 | log_error("[%s:%u] Invalid age '%s'.", fname, line, age); |
7f2c1f4d | 2777 | return -EBADMSG; |
3b63d2d3 LP |
2778 | } |
2779 | ||
3f93da98 | 2780 | i.age_set = true; |
3b63d2d3 LP |
2781 | } |
2782 | ||
3f93da98 | 2783 | h = needs_glob(i.type) ? globs : items; |
bfe95f35 | 2784 | |
ef43a391 | 2785 | existing = ordered_hashmap_get(h, i.path); |
468d726b | 2786 | if (existing) { |
96d10d78 | 2787 | size_t n; |
3f93da98 | 2788 | |
96d10d78 | 2789 | for (n = 0; n < existing->n_items; n++) { |
6487ada8 | 2790 | if (!item_compatible(existing->items + n, &i)) { |
e286dbaf ZJS |
2791 | log_notice("[%s:%u] Duplicate line for path \"%s\", ignoring.", |
2792 | fname, line, i.path); | |
6487ada8 MP |
2793 | return 0; |
2794 | } | |
ebf4e801 MW |
2795 | } |
2796 | } else { | |
3f93da98 | 2797 | existing = new0(ItemArray, 1); |
07982ed1 LP |
2798 | if (!existing) |
2799 | return log_oom(); | |
2800 | ||
ef43a391 | 2801 | r = ordered_hashmap_put(h, i.path, existing); |
ccd114f0 LP |
2802 | if (r < 0) { |
2803 | free(existing); | |
3f93da98 | 2804 | return log_oom(); |
ccd114f0 | 2805 | } |
bfe95f35 LP |
2806 | } |
2807 | ||
96d10d78 | 2808 | if (!GREEDY_REALLOC(existing->items, existing->allocated, existing->n_items + 1)) |
3f93da98 | 2809 | return log_oom(); |
5008d581 | 2810 | |
7ab7529d LP |
2811 | existing->items[existing->n_items++] = i; |
2812 | i = (struct Item) {}; | |
dd449aca ZJS |
2813 | |
2814 | /* Sort item array, to enforce stable ordering of application */ | |
96d10d78 | 2815 | typesafe_qsort(existing->items, existing->n_items, item_compare); |
17493fa5 | 2816 | |
7f2c1f4d | 2817 | return 0; |
5008d581 LP |
2818 | } |
2819 | ||
ceaaeb9b ZJS |
2820 | static int cat_config(char **config_dirs, char **args) { |
2821 | _cleanup_strv_free_ char **files = NULL; | |
2822 | int r; | |
2823 | ||
2824 | r = conf_files_list_with_replacement(arg_root, config_dirs, arg_replace, &files, NULL); | |
2825 | if (r < 0) | |
2826 | return r; | |
2827 | ||
2828 | return cat_files(NULL, files, 0); | |
2829 | } | |
2830 | ||
37ec0fdd LP |
2831 | static int help(void) { |
2832 | _cleanup_free_ char *link = NULL; | |
2833 | int r; | |
2834 | ||
2835 | r = terminal_urlify_man("systemd-tmpfiles", "8", &link); | |
2836 | if (r < 0) | |
2837 | return log_oom(); | |
2838 | ||
522d4a49 LP |
2839 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
2840 | "Creates, deletes and cleans up volatile and temporary files and directories.\n\n" | |
5c795114 | 2841 | " -h --help Show this help\n" |
f2b5ca0e | 2842 | " --user Execute user configuration\n" |
eb9da376 | 2843 | " --version Show package version\n" |
ceaaeb9b | 2844 | " --cat-config Show configuration files\n" |
5c795114 DR |
2845 | " --create Create marked files/directories\n" |
2846 | " --clean Clean up marked directories\n" | |
2847 | " --remove Remove marked files/directories\n" | |
81815651 | 2848 | " --boot Execute actions only safe at boot\n" |
79ca888f ZJS |
2849 | " --prefix=PATH Only apply rules with the specified prefix\n" |
2850 | " --exclude-prefix=PATH Ignore rules with the specified prefix\n" | |
d9daae55 | 2851 | " --root=PATH Operate on an alternate filesystem root\n" |
a6d8474f | 2852 | " --replace=PATH Treat arguments as replacement for PATH\n" |
dcd5c891 | 2853 | " --no-pager Do not pipe output into a pager\n" |
37ec0fdd LP |
2854 | "\nSee the %s for details.\n" |
2855 | , program_invocation_short_name | |
2856 | , link | |
2857 | ); | |
2858 | ||
2859 | return 0; | |
3b63d2d3 LP |
2860 | } |
2861 | ||
2862 | static int parse_argv(int argc, char *argv[]) { | |
2863 | ||
2864 | enum { | |
eb9da376 | 2865 | ARG_VERSION = 0x100, |
ceaaeb9b | 2866 | ARG_CAT_CONFIG, |
f2b5ca0e | 2867 | ARG_USER, |
3b63d2d3 LP |
2868 | ARG_CREATE, |
2869 | ARG_CLEAN, | |
fba6e687 | 2870 | ARG_REMOVE, |
81815651 | 2871 | ARG_BOOT, |
5c795114 DR |
2872 | ARG_PREFIX, |
2873 | ARG_EXCLUDE_PREFIX, | |
cf9a4abd | 2874 | ARG_ROOT, |
a6d8474f | 2875 | ARG_REPLACE, |
dcd5c891 | 2876 | ARG_NO_PAGER, |
3b63d2d3 LP |
2877 | }; |
2878 | ||
2879 | static const struct option options[] = { | |
5c795114 | 2880 | { "help", no_argument, NULL, 'h' }, |
f2b5ca0e | 2881 | { "user", no_argument, NULL, ARG_USER }, |
eb9da376 | 2882 | { "version", no_argument, NULL, ARG_VERSION }, |
ceaaeb9b | 2883 | { "cat-config", no_argument, NULL, ARG_CAT_CONFIG }, |
5c795114 DR |
2884 | { "create", no_argument, NULL, ARG_CREATE }, |
2885 | { "clean", no_argument, NULL, ARG_CLEAN }, | |
2886 | { "remove", no_argument, NULL, ARG_REMOVE }, | |
81815651 | 2887 | { "boot", no_argument, NULL, ARG_BOOT }, |
5c795114 DR |
2888 | { "prefix", required_argument, NULL, ARG_PREFIX }, |
2889 | { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX }, | |
cf9a4abd | 2890 | { "root", required_argument, NULL, ARG_ROOT }, |
a6d8474f | 2891 | { "replace", required_argument, NULL, ARG_REPLACE }, |
dcd5c891 | 2892 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, |
eb9da376 | 2893 | {} |
3b63d2d3 LP |
2894 | }; |
2895 | ||
0f474365 | 2896 | int c, r; |
3b63d2d3 LP |
2897 | |
2898 | assert(argc >= 0); | |
2899 | assert(argv); | |
2900 | ||
601185b4 | 2901 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
3b63d2d3 LP |
2902 | |
2903 | switch (c) { | |
2904 | ||
2905 | case 'h': | |
37ec0fdd | 2906 | return help(); |
eb9da376 LP |
2907 | |
2908 | case ARG_VERSION: | |
3f6fd1ba | 2909 | return version(); |
3b63d2d3 | 2910 | |
ceaaeb9b ZJS |
2911 | case ARG_CAT_CONFIG: |
2912 | arg_cat_config = true; | |
2913 | break; | |
2914 | ||
f2b5ca0e ZJS |
2915 | case ARG_USER: |
2916 | arg_user = true; | |
2917 | break; | |
2918 | ||
3b63d2d3 | 2919 | case ARG_CREATE: |
1a967b6b | 2920 | arg_operation |= OPERATION_CREATE; |
3b63d2d3 LP |
2921 | break; |
2922 | ||
2923 | case ARG_CLEAN: | |
1a967b6b | 2924 | arg_operation |= OPERATION_CLEAN; |
3b63d2d3 LP |
2925 | break; |
2926 | ||
2927 | case ARG_REMOVE: | |
1a967b6b | 2928 | arg_operation |= OPERATION_REMOVE; |
3b63d2d3 LP |
2929 | break; |
2930 | ||
81815651 ZJS |
2931 | case ARG_BOOT: |
2932 | arg_boot = true; | |
c4708f13 ZJS |
2933 | break; |
2934 | ||
fba6e687 | 2935 | case ARG_PREFIX: |
7bc040fa | 2936 | if (strv_push(&arg_include_prefixes, optarg) < 0) |
a2aced4a | 2937 | return log_oom(); |
fba6e687 LP |
2938 | break; |
2939 | ||
5c795114 | 2940 | case ARG_EXCLUDE_PREFIX: |
7bc040fa | 2941 | if (strv_push(&arg_exclude_prefixes, optarg) < 0) |
5c795114 DR |
2942 | return log_oom(); |
2943 | break; | |
2944 | ||
cf9a4abd | 2945 | case ARG_ROOT: |
0f03c2a4 | 2946 | r = parse_path_argument_and_warn(optarg, true, &arg_root); |
0f474365 | 2947 | if (r < 0) |
0f03c2a4 | 2948 | return r; |
cf9a4abd MM |
2949 | break; |
2950 | ||
a6d8474f ZJS |
2951 | case ARG_REPLACE: |
2952 | if (!path_is_absolute(optarg) || | |
baaa35ad ZJS |
2953 | !endswith(optarg, ".conf")) |
2954 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2955 | "The argument to --replace= must an absolute path to a config file"); | |
a6d8474f ZJS |
2956 | |
2957 | arg_replace = optarg; | |
2958 | break; | |
2959 | ||
dcd5c891 | 2960 | case ARG_NO_PAGER: |
0221d68a | 2961 | arg_pager_flags |= PAGER_DISABLE; |
dcd5c891 LP |
2962 | break; |
2963 | ||
3b63d2d3 LP |
2964 | case '?': |
2965 | return -EINVAL; | |
2966 | ||
2967 | default: | |
eb9da376 | 2968 | assert_not_reached("Unhandled option"); |
3b63d2d3 | 2969 | } |
3b63d2d3 | 2970 | |
baaa35ad ZJS |
2971 | if (arg_operation == 0 && !arg_cat_config) |
2972 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2973 | "You need to specify at least one of --clean, --create or --remove."); | |
3b63d2d3 | 2974 | |
baaa35ad ZJS |
2975 | if (arg_replace && arg_cat_config) |
2976 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2977 | "Option --replace= is not supported with --cat-config"); | |
ceaaeb9b | 2978 | |
baaa35ad ZJS |
2979 | if (arg_replace && optind >= argc) |
2980 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2981 | "When --replace= is given, some configuration items must be specified"); | |
a6d8474f | 2982 | |
3b63d2d3 LP |
2983 | return 1; |
2984 | } | |
2985 | ||
a6d8474f | 2986 | static int read_config_file(char **config_dirs, const char *fn, bool ignore_enoent, bool *invalid_config) { |
f7ac1ed2 | 2987 | _cleanup_fclose_ FILE *_f = NULL; |
78a92a5a | 2988 | Iterator iterator; |
1731e34a | 2989 | unsigned v = 0; |
2a98ae4a | 2990 | FILE *f; |
78a92a5a | 2991 | Item *i; |
4e68ec18 | 2992 | int r = 0; |
fba6e687 LP |
2993 | |
2994 | assert(fn); | |
2995 | ||
f7ac1ed2 | 2996 | if (streq(fn, "-")) { |
a6d8474f | 2997 | log_debug("Reading config from stdin…"); |
f7ac1ed2 ZJS |
2998 | fn = "<stdin>"; |
2999 | f = stdin; | |
3000 | } else { | |
a6d8474f | 3001 | r = search_and_fopen(fn, "re", arg_root, (const char**) config_dirs, &_f); |
f7ac1ed2 ZJS |
3002 | if (r < 0) { |
3003 | if (ignore_enoent && r == -ENOENT) { | |
3004 | log_debug_errno(r, "Failed to open \"%s\", ignoring: %m", fn); | |
3005 | return 0; | |
3006 | } | |
fba6e687 | 3007 | |
f7ac1ed2 ZJS |
3008 | return log_error_errno(r, "Failed to open '%s': %m", fn); |
3009 | } | |
a6d8474f | 3010 | log_debug("Reading config file \"%s\"…", fn); |
f7ac1ed2 | 3011 | f = _f; |
fba6e687 LP |
3012 | } |
3013 | ||
2a98ae4a LP |
3014 | for (;;) { |
3015 | _cleanup_free_ char *line = NULL; | |
3016 | bool invalid_line = false; | |
1731e34a | 3017 | char *l; |
fba6e687 | 3018 | int k; |
2a98ae4a LP |
3019 | |
3020 | k = read_line(f, LONG_LINE_MAX, &line); | |
3021 | if (k < 0) | |
3022 | return log_error_errno(k, "Failed to read '%s': %m", fn); | |
3023 | if (k == 0) | |
3024 | break; | |
fba6e687 | 3025 | |
fba6e687 LP |
3026 | v++; |
3027 | ||
3028 | l = strstrip(line); | |
4c701096 | 3029 | if (IN_SET(*l, 0, '#')) |
fba6e687 LP |
3030 | continue; |
3031 | ||
d9daae55 ZJS |
3032 | k = parse_line(fn, v, l, &invalid_line); |
3033 | if (k < 0) { | |
3034 | if (invalid_line) | |
3035 | /* Allow reporting with a special code if the caller requested this */ | |
3036 | *invalid_config = true; | |
3037 | else if (r == 0) | |
3038 | /* The first error becomes our return value */ | |
3039 | r = k; | |
3040 | } | |
fba6e687 LP |
3041 | } |
3042 | ||
78a92a5a | 3043 | /* we have to determine age parameter for each entry of type X */ |
ef43a391 | 3044 | ORDERED_HASHMAP_FOREACH(i, globs, iterator) { |
78a92a5a MS |
3045 | Iterator iter; |
3046 | Item *j, *candidate_item = NULL; | |
3047 | ||
3048 | if (i->type != IGNORE_DIRECTORY_PATH) | |
3049 | continue; | |
3050 | ||
ef43a391 | 3051 | ORDERED_HASHMAP_FOREACH(j, items, iter) { |
5fb13eb5 | 3052 | if (!IN_SET(j->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA)) |
78a92a5a MS |
3053 | continue; |
3054 | ||
3055 | if (path_equal(j->path, i->path)) { | |
3056 | candidate_item = j; | |
3057 | break; | |
3058 | } | |
3059 | ||
3060 | if ((!candidate_item && path_startswith(i->path, j->path)) || | |
3061 | (candidate_item && path_startswith(j->path, candidate_item->path) && (fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0))) | |
3062 | candidate_item = j; | |
3063 | } | |
3064 | ||
9ed2a35e | 3065 | if (candidate_item && candidate_item->age_set) { |
78a92a5a MS |
3066 | i->age = candidate_item->age; |
3067 | i->age_set = true; | |
3068 | } | |
3069 | } | |
3070 | ||
fba6e687 | 3071 | if (ferror(f)) { |
56f64d95 | 3072 | log_error_errno(errno, "Failed to read from file %s: %m", fn); |
fba6e687 LP |
3073 | if (r == 0) |
3074 | r = -EIO; | |
3075 | } | |
3076 | ||
fba6e687 LP |
3077 | return r; |
3078 | } | |
3079 | ||
a6d8474f ZJS |
3080 | static int parse_arguments(char **config_dirs, char **args, bool *invalid_config) { |
3081 | char **arg; | |
3082 | int r; | |
3083 | ||
3084 | STRV_FOREACH(arg, args) { | |
3085 | r = read_config_file(config_dirs, *arg, false, invalid_config); | |
3086 | if (r < 0) | |
3087 | return r; | |
3088 | } | |
3089 | ||
3090 | return 0; | |
3091 | } | |
3092 | ||
3093 | static int read_config_files(char **config_dirs, char **args, bool *invalid_config) { | |
3094 | _cleanup_strv_free_ char **files = NULL; | |
3095 | _cleanup_free_ char *p = NULL; | |
3096 | char **f; | |
3097 | int r; | |
3098 | ||
ceaaeb9b | 3099 | r = conf_files_list_with_replacement(arg_root, config_dirs, arg_replace, &files, &p); |
a6d8474f | 3100 | if (r < 0) |
ceaaeb9b | 3101 | return r; |
a6d8474f ZJS |
3102 | |
3103 | STRV_FOREACH(f, files) | |
3104 | if (p && path_equal(*f, p)) { | |
3105 | log_debug("Parsing arguments at position \"%s\"…", *f); | |
3106 | ||
3107 | r = parse_arguments(config_dirs, args, invalid_config); | |
3108 | if (r < 0) | |
3109 | return r; | |
3110 | } else | |
3111 | /* Just warn, ignore result otherwise. | |
3112 | * read_config_file() has some debug output, so no need to print anything. */ | |
3113 | (void) read_config_file(config_dirs, *f, true, invalid_config); | |
3114 | ||
3115 | return 0; | |
3116 | } | |
3117 | ||
811a1587 LP |
3118 | static int link_parent(ItemArray *a) { |
3119 | const char *path; | |
3120 | char *prefix; | |
3121 | int r; | |
3122 | ||
3123 | assert(a); | |
3124 | ||
09f467ac | 3125 | /* Finds the closest "parent" item array for the specified item array. Then registers the specified item array |
811a1587 LP |
3126 | * as child of it, and fills the parent in, linking them both ways. This allows us to later create parents |
3127 | * before their children, and clean up/remove children before their parents. */ | |
3128 | ||
3129 | if (a->n_items <= 0) | |
3130 | return 0; | |
3131 | ||
3132 | path = a->items[0].path; | |
6e9417f5 | 3133 | prefix = newa(char, strlen(path) + 1); |
811a1587 LP |
3134 | PATH_FOREACH_PREFIX(prefix, path) { |
3135 | ItemArray *j; | |
3136 | ||
3137 | j = ordered_hashmap_get(items, prefix); | |
bd0ce244 LP |
3138 | if (!j) |
3139 | j = ordered_hashmap_get(globs, prefix); | |
811a1587 LP |
3140 | if (j) { |
3141 | r = set_ensure_allocated(&j->children, NULL); | |
3142 | if (r < 0) | |
3143 | return log_oom(); | |
3144 | ||
3145 | r = set_put(j->children, a); | |
3146 | if (r < 0) | |
3147 | return log_oom(); | |
3148 | ||
3149 | a->parent = j; | |
3150 | return 1; | |
3151 | } | |
3152 | } | |
3153 | ||
3154 | return 0; | |
3155 | } | |
3156 | ||
87938c3b YW |
3157 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(item_array_hash_ops, char, string_hash_func, string_compare_func, |
3158 | ItemArray, item_array_free); | |
3159 | ||
3160 | static int run(int argc, char *argv[]) { | |
f2b5ca0e | 3161 | _cleanup_strv_free_ char **config_dirs = NULL; |
d9daae55 | 3162 | bool invalid_config = false; |
64adb379 LP |
3163 | Iterator iterator; |
3164 | ItemArray *a; | |
44ac4f88 LP |
3165 | enum { |
3166 | PHASE_REMOVE_AND_CLEAN, | |
3167 | PHASE_CREATE, | |
3168 | _PHASE_MAX | |
3169 | } phase; | |
87938c3b | 3170 | int r, k; |
3b63d2d3 | 3171 | |
fdcad0c2 LP |
3172 | r = parse_argv(argc, argv); |
3173 | if (r <= 0) | |
87938c3b | 3174 | return r; |
5008d581 | 3175 | |
6bf3c61c | 3176 | log_setup_service(); |
5008d581 | 3177 | |
f2b5ca0e ZJS |
3178 | if (arg_user) { |
3179 | r = user_config_paths(&config_dirs); | |
87938c3b YW |
3180 | if (r < 0) |
3181 | return log_error_errno(r, "Failed to initialize configuration directory list: %m"); | |
f2b5ca0e ZJS |
3182 | } else { |
3183 | config_dirs = strv_split_nulstr(CONF_PATHS_NULSTR("tmpfiles.d")); | |
87938c3b YW |
3184 | if (!config_dirs) |
3185 | return log_oom(); | |
f2b5ca0e ZJS |
3186 | } |
3187 | ||
79c91cec | 3188 | if (DEBUG_LOGGING) { |
f2b5ca0e ZJS |
3189 | _cleanup_free_ char *t = NULL; |
3190 | ||
3191 | t = strv_join(config_dirs, "\n\t"); | |
3192 | if (t) | |
bb9947be | 3193 | log_debug("Looking for configuration files in (higher priority first):\n\t%s", t); |
f2b5ca0e ZJS |
3194 | } |
3195 | ||
ceaaeb9b | 3196 | if (arg_cat_config) { |
0221d68a | 3197 | (void) pager_open(arg_pager_flags); |
dcd5c891 | 3198 | |
87938c3b | 3199 | return cat_config(config_dirs, argv + optind); |
ceaaeb9b ZJS |
3200 | } |
3201 | ||
3202 | umask(0022); | |
3203 | ||
3204 | mac_selinux_init(); | |
3205 | ||
87938c3b YW |
3206 | items = ordered_hashmap_new(&item_array_hash_ops); |
3207 | globs = ordered_hashmap_new(&item_array_hash_ops); | |
3208 | if (!items || !globs) | |
3209 | return log_oom(); | |
ceaaeb9b | 3210 | |
a6d8474f ZJS |
3211 | /* If command line arguments are specified along with --replace, read all |
3212 | * configuration files and insert the positional arguments at the specified | |
3213 | * place. Otherwise, if command line arguments are specified, execute just | |
3214 | * them, and finally, without --replace= or any positional arguments, just | |
3215 | * read configuration and execute it. | |
3216 | */ | |
3217 | if (arg_replace || optind >= argc) | |
3218 | r = read_config_files(config_dirs, argv + optind, &invalid_config); | |
3219 | else | |
3220 | r = parse_arguments(config_dirs, argv + optind, &invalid_config); | |
3221 | if (r < 0) | |
87938c3b | 3222 | return r; |
5008d581 | 3223 | |
811a1587 | 3224 | /* Let's now link up all child/parent relationships */ |
ef43a391 | 3225 | ORDERED_HASHMAP_FOREACH(a, items, iterator) { |
811a1587 LP |
3226 | r = link_parent(a); |
3227 | if (r < 0) | |
87938c3b | 3228 | return r; |
1db50423 | 3229 | } |
ef43a391 | 3230 | ORDERED_HASHMAP_FOREACH(a, globs, iterator) { |
811a1587 LP |
3231 | r = link_parent(a); |
3232 | if (r < 0) | |
87938c3b | 3233 | return r; |
811a1587 LP |
3234 | } |
3235 | ||
64adb379 LP |
3236 | /* If multiple operations are requested, let's first run the remove/clean operations, and only then the create |
3237 | * operations. i.e. that we first clean out the platform we then build on. */ | |
44ac4f88 | 3238 | for (phase = 0; phase < _PHASE_MAX; phase++) { |
64adb379 | 3239 | OperationMask op; |
b8bb3e8f | 3240 | |
44ac4f88 | 3241 | if (phase == PHASE_REMOVE_AND_CLEAN) |
64adb379 | 3242 | op = arg_operation & (OPERATION_REMOVE|OPERATION_CLEAN); |
44ac4f88 | 3243 | else if (phase == PHASE_CREATE) |
64adb379 LP |
3244 | op = arg_operation & OPERATION_CREATE; |
3245 | else | |
3246 | assert_not_reached("unexpected phase"); | |
3247 | ||
3248 | if (op == 0) /* Nothing requested in this phase */ | |
3249 | continue; | |
3250 | ||
3251 | /* The non-globbing ones usually create things, hence we apply them first */ | |
3252 | ORDERED_HASHMAP_FOREACH(a, items, iterator) { | |
3253 | k = process_item_array(a, op); | |
87938c3b YW |
3254 | if (k < 0 && r >= 0) |
3255 | r = k; | |
64adb379 LP |
3256 | } |
3257 | ||
3258 | /* The globbing ones usually alter things, hence we apply them second. */ | |
3259 | ORDERED_HASHMAP_FOREACH(a, globs, iterator) { | |
3260 | k = process_item_array(a, op); | |
87938c3b YW |
3261 | if (k < 0 && r >= 0) |
3262 | r = k; | |
64adb379 | 3263 | } |
1db50423 | 3264 | } |
3b63d2d3 | 3265 | |
87938c3b YW |
3266 | if (ERRNO_IS_RESOURCE(-r)) |
3267 | return r; | |
3268 | if (invalid_config) | |
d9daae55 | 3269 | return EX_DATAERR; |
87938c3b | 3270 | if (r < 0) |
bb9947be | 3271 | return EX_CANTCREAT; |
87938c3b | 3272 | return 0; |
5008d581 | 3273 | } |
87938c3b YW |
3274 | |
3275 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |