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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" |
d39efe74 | 42 | #include "missing.h" |
49e942b2 | 43 | #include "mkdir.h" |
4e036b7a | 44 | #include "mount-util.h" |
dcd5c891 | 45 | #include "pager.h" |
6bedfcbb | 46 | #include "parse-util.h" |
f2b5ca0e | 47 | #include "path-lookup.h" |
9eb977db | 48 | #include "path-util.h" |
c6878637 | 49 | #include "rm-rf.h" |
d7b8eec7 | 50 | #include "selinux-util.h" |
3f6fd1ba LP |
51 | #include "set.h" |
52 | #include "specifier.h" | |
8fcde012 | 53 | #include "stat-util.h" |
15a5e950 | 54 | #include "stdio-util.h" |
8b43440b | 55 | #include "string-table.h" |
07630cea | 56 | #include "string-util.h" |
3f6fd1ba | 57 | #include "strv.h" |
ceaaeb9b | 58 | #include "terminal-util.h" |
affb60b1 | 59 | #include "umask-util.h" |
b1d4f8e1 | 60 | #include "user-util.h" |
3f6fd1ba | 61 | #include "util.h" |
5008d581 | 62 | |
01000479 | 63 | /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates |
5008d581 | 64 | * them in the file system. This is intended to be used to create |
db019b8d KS |
65 | * properly owned directories beneath /tmp, /var/tmp, /run, which are |
66 | * volatile and hence need to be recreated on bootup. */ | |
5008d581 | 67 | |
66ccd038 | 68 | typedef enum ItemType { |
b8bb3e8f | 69 | /* These ones take file names */ |
3b63d2d3 LP |
70 | CREATE_FILE = 'f', |
71 | TRUNCATE_FILE = 'F', | |
72 | CREATE_DIRECTORY = 'd', | |
73 | TRUNCATE_DIRECTORY = 'D', | |
d7b8eec7 | 74 | CREATE_SUBVOLUME = 'v', |
5fb13eb5 LP |
75 | CREATE_SUBVOLUME_INHERIT_QUOTA = 'q', |
76 | CREATE_SUBVOLUME_NEW_QUOTA = 'Q', | |
ee17ee7c | 77 | CREATE_FIFO = 'p', |
468d726b LP |
78 | CREATE_SYMLINK = 'L', |
79 | CREATE_CHAR_DEVICE = 'c', | |
80 | CREATE_BLOCK_DEVICE = 'b', | |
849958d1 | 81 | COPY_FILES = 'C', |
b8bb3e8f LP |
82 | |
83 | /* These ones take globs */ | |
17493fa5 | 84 | WRITE_FILE = 'w', |
df8dee85 | 85 | EMPTY_DIRECTORY = 'e', |
b705ab6a ZJS |
86 | SET_XATTR = 't', |
87 | RECURSIVE_SET_XATTR = 'T', | |
88 | SET_ACL = 'a', | |
89 | RECURSIVE_SET_ACL = 'A', | |
17493fa5 LP |
90 | SET_ATTRIBUTE = 'h', |
91 | RECURSIVE_SET_ATTRIBUTE = 'H', | |
3b63d2d3 | 92 | IGNORE_PATH = 'x', |
78a92a5a | 93 | IGNORE_DIRECTORY_PATH = 'X', |
3b63d2d3 | 94 | REMOVE_PATH = 'r', |
a8d88783 | 95 | RECURSIVE_REMOVE_PATH = 'R', |
777b87e7 | 96 | RELABEL_PATH = 'z', |
e73a03e0 | 97 | RECURSIVE_RELABEL_PATH = 'Z', |
17493fa5 | 98 | ADJUST_MODE = 'm', /* legacy, 'z' is identical to this */ |
66ccd038 | 99 | } ItemType; |
3b63d2d3 LP |
100 | |
101 | typedef struct Item { | |
66ccd038 | 102 | ItemType type; |
3b63d2d3 LP |
103 | |
104 | char *path; | |
468d726b | 105 | char *argument; |
ebf4e801 | 106 | char **xattrs; |
349cc4a5 | 107 | #if HAVE_ACL |
f8eeeaf9 ZJS |
108 | acl_t acl_access; |
109 | acl_t acl_default; | |
110 | #endif | |
5008d581 LP |
111 | uid_t uid; |
112 | gid_t gid; | |
3b63d2d3 LP |
113 | mode_t mode; |
114 | usec_t age; | |
115 | ||
468d726b | 116 | dev_t major_minor; |
88ec4dfa LP |
117 | unsigned attribute_value; |
118 | unsigned attribute_mask; | |
468d726b | 119 | |
3b63d2d3 LP |
120 | bool uid_set:1; |
121 | bool gid_set:1; | |
122 | bool mode_set:1; | |
123 | bool age_set:1; | |
abef3f91 | 124 | bool mask_perms:1; |
88ec4dfa | 125 | bool attribute_set:1; |
24f3a374 LP |
126 | |
127 | bool keep_first_level:1; | |
1910cd0e | 128 | |
2e78fa79 LP |
129 | bool force:1; |
130 | ||
6d7b5433 WD |
131 | bool allow_failure:1; |
132 | ||
1910cd0e | 133 | bool done:1; |
3b63d2d3 LP |
134 | } Item; |
135 | ||
3f93da98 ZJS |
136 | typedef struct ItemArray { |
137 | Item *items; | |
138 | size_t count; | |
139 | size_t size; | |
140 | } ItemArray; | |
141 | ||
5a8575ef ZJS |
142 | typedef enum DirectoryType { |
143 | DIRECTORY_RUNTIME = 0, | |
144 | DIRECTORY_STATE, | |
145 | DIRECTORY_CACHE, | |
146 | DIRECTORY_LOGS, | |
147 | _DIRECTORY_TYPE_MAX, | |
148 | } DirectoryType; | |
149 | ||
ceaaeb9b | 150 | static bool arg_cat_config = false; |
f2b5ca0e | 151 | static bool arg_user = false; |
3b63d2d3 LP |
152 | static bool arg_create = false; |
153 | static bool arg_clean = false; | |
154 | static bool arg_remove = false; | |
81815651 | 155 | static bool arg_boot = false; |
dcd5c891 | 156 | static bool arg_no_pager = false; |
3b63d2d3 | 157 | |
7bc040fa LP |
158 | static char **arg_include_prefixes = NULL; |
159 | static char **arg_exclude_prefixes = NULL; | |
cf9a4abd | 160 | static char *arg_root = NULL; |
a6d8474f | 161 | static char *arg_replace = NULL; |
fba6e687 | 162 | |
3b63d2d3 LP |
163 | #define MAX_DEPTH 256 |
164 | ||
ef43a391 | 165 | static OrderedHashmap *items = NULL, *globs = NULL; |
7bc040fa LP |
166 | static Set *unix_sockets = NULL; |
167 | ||
4cef1923 | 168 | static int specifier_machine_id_safe(char specifier, void *data, void *userdata, char **ret); |
5a8575ef | 169 | static int specifier_directory(char specifier, void *data, void *userdata, char **ret); |
4cef1923 | 170 | |
bd550f78 | 171 | static const Specifier specifier_table[] = { |
4cef1923 | 172 | { 'm', specifier_machine_id_safe, NULL }, |
5a8575ef ZJS |
173 | { 'b', specifier_boot_id, NULL }, |
174 | { 'H', specifier_host_name, NULL }, | |
175 | { 'v', specifier_kernel_release, NULL }, | |
176 | ||
b75f0c69 DC |
177 | { 'g', specifier_group_name, NULL }, |
178 | { 'G', specifier_group_id, NULL }, | |
5a8575ef ZJS |
179 | { 'U', specifier_user_id, NULL }, |
180 | { 'u', specifier_user_name, NULL }, | |
181 | { 'h', specifier_user_home, NULL }, | |
b294e594 | 182 | |
5a8575ef ZJS |
183 | { 't', specifier_directory, UINT_TO_PTR(DIRECTORY_RUNTIME) }, |
184 | { 'S', specifier_directory, UINT_TO_PTR(DIRECTORY_STATE) }, | |
185 | { 'C', specifier_directory, UINT_TO_PTR(DIRECTORY_CACHE) }, | |
186 | { 'L', specifier_directory, UINT_TO_PTR(DIRECTORY_LOGS) }, | |
b294e594 LP |
187 | { 'T', specifier_tmp_dir, NULL }, |
188 | { 'V', specifier_var_tmp_dir, NULL }, | |
bd550f78 LP |
189 | {} |
190 | }; | |
191 | ||
4cef1923 FB |
192 | static int specifier_machine_id_safe(char specifier, void *data, void *userdata, char **ret) { |
193 | int r; | |
194 | ||
d8dab757 FB |
195 | /* If /etc/machine_id is missing or empty (e.g. in a chroot environment) |
196 | * return a recognizable error so that the caller can skip the rule | |
4cef1923 FB |
197 | * gracefully. */ |
198 | ||
199 | r = specifier_machine_id(specifier, data, userdata, ret); | |
d8dab757 | 200 | if (IN_SET(r, -ENOENT, -ENOMEDIUM)) |
5a8575ef | 201 | return -ENXIO; |
4cef1923 FB |
202 | |
203 | return r; | |
204 | } | |
205 | ||
5a8575ef ZJS |
206 | static int specifier_directory(char specifier, void *data, void *userdata, char **ret) { |
207 | struct table_entry { | |
208 | uint64_t type; | |
209 | const char *suffix; | |
210 | }; | |
211 | ||
212 | static const struct table_entry paths_system[] = { | |
213 | [DIRECTORY_RUNTIME] = { SD_PATH_SYSTEM_RUNTIME }, | |
214 | [DIRECTORY_STATE] = { SD_PATH_SYSTEM_STATE_PRIVATE }, | |
215 | [DIRECTORY_CACHE] = { SD_PATH_SYSTEM_STATE_CACHE }, | |
216 | [DIRECTORY_LOGS] = { SD_PATH_SYSTEM_STATE_LOGS }, | |
217 | }; | |
218 | ||
219 | static const struct table_entry paths_user[] = { | |
220 | [DIRECTORY_RUNTIME] = { SD_PATH_USER_RUNTIME }, | |
221 | [DIRECTORY_STATE] = { SD_PATH_USER_CONFIGURATION }, | |
222 | [DIRECTORY_CACHE] = { SD_PATH_USER_STATE_CACHE }, | |
223 | [DIRECTORY_LOGS] = { SD_PATH_USER_CONFIGURATION, "log" }, | |
224 | }; | |
225 | ||
226 | unsigned i; | |
227 | const struct table_entry *paths; | |
228 | ||
229 | assert_cc(ELEMENTSOF(paths_system) == ELEMENTSOF(paths_user)); | |
230 | paths = arg_user ? paths_user : paths_system; | |
231 | ||
232 | i = PTR_TO_UINT(data); | |
233 | assert(i < ELEMENTSOF(paths_system)); | |
234 | ||
235 | return sd_path_home(paths[i].type, paths[i].suffix, ret); | |
236 | } | |
237 | ||
4cef1923 FB |
238 | static int log_unresolvable_specifier(const char *filename, unsigned line) { |
239 | static bool notified = false; | |
240 | ||
5a8575ef ZJS |
241 | /* In system mode, this is called when /etc is not fully initialized (e.g. |
242 | * in a chroot environment) where some specifiers are unresolvable. In user | |
243 | * mode, this is called when some variables are not defined. These cases are | |
244 | * not considered as an error so log at LOG_NOTICE only for the first time | |
245 | * and then downgrade this to LOG_DEBUG for the rest. */ | |
4cef1923 FB |
246 | |
247 | log_full(notified ? LOG_DEBUG : LOG_NOTICE, | |
5a8575ef ZJS |
248 | "[%s:%u] Failed to resolve specifier: %s, skipping", |
249 | filename, line, | |
250 | arg_user ? "Required $XDG_... variable not defined" : "uninitialized /etc detected"); | |
4cef1923 FB |
251 | |
252 | if (!notified) | |
253 | log_notice("All rules containing unresolvable specifiers will be skipped."); | |
254 | ||
255 | notified = true; | |
256 | return 0; | |
257 | } | |
258 | ||
f2b5ca0e ZJS |
259 | static int user_config_paths(char*** ret) { |
260 | _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL; | |
261 | _cleanup_free_ char *persistent_config = NULL, *runtime_config = NULL, *data_home = NULL; | |
262 | _cleanup_strv_free_ char **res = NULL; | |
263 | int r; | |
264 | ||
265 | r = xdg_user_dirs(&config_dirs, &data_dirs); | |
266 | if (r < 0) | |
267 | return r; | |
268 | ||
269 | r = xdg_user_config_dir(&persistent_config, "/user-tmpfiles.d"); | |
270 | if (r < 0 && r != -ENXIO) | |
271 | return r; | |
272 | ||
273 | r = xdg_user_runtime_dir(&runtime_config, "/user-tmpfiles.d"); | |
274 | if (r < 0 && r != -ENXIO) | |
275 | return r; | |
276 | ||
277 | r = xdg_user_data_dir(&data_home, "/user-tmpfiles.d"); | |
278 | if (r < 0 && r != -ENXIO) | |
279 | return r; | |
280 | ||
281 | r = strv_extend_strv_concat(&res, config_dirs, "/user-tmpfiles.d"); | |
282 | if (r < 0) | |
283 | return r; | |
284 | ||
285 | r = strv_extend(&res, persistent_config); | |
286 | if (r < 0) | |
287 | return r; | |
288 | ||
289 | r = strv_extend(&res, runtime_config); | |
290 | if (r < 0) | |
291 | return r; | |
292 | ||
293 | r = strv_extend(&res, data_home); | |
294 | if (r < 0) | |
295 | return r; | |
296 | ||
297 | r = strv_extend_strv_concat(&res, data_dirs, "/user-tmpfiles.d"); | |
298 | if (r < 0) | |
299 | return r; | |
300 | ||
301 | r = path_strv_make_absolute_cwd(res); | |
302 | if (r < 0) | |
303 | return r; | |
304 | ||
ae2a15bc | 305 | *ret = TAKE_PTR(res); |
f2b5ca0e ZJS |
306 | return 0; |
307 | } | |
308 | ||
66ccd038 | 309 | static bool needs_glob(ItemType t) { |
cde684a2 LP |
310 | return IN_SET(t, |
311 | WRITE_FILE, | |
312 | IGNORE_PATH, | |
313 | IGNORE_DIRECTORY_PATH, | |
314 | REMOVE_PATH, | |
315 | RECURSIVE_REMOVE_PATH, | |
df8dee85 | 316 | EMPTY_DIRECTORY, |
e73a03e0 | 317 | ADJUST_MODE, |
cde684a2 | 318 | RELABEL_PATH, |
b705ab6a ZJS |
319 | RECURSIVE_RELABEL_PATH, |
320 | SET_XATTR, | |
321 | RECURSIVE_SET_XATTR, | |
322 | SET_ACL, | |
34f64536 LP |
323 | RECURSIVE_SET_ACL, |
324 | SET_ATTRIBUTE, | |
325 | RECURSIVE_SET_ATTRIBUTE); | |
b8bb3e8f LP |
326 | } |
327 | ||
3f93da98 ZJS |
328 | static bool takes_ownership(ItemType t) { |
329 | return IN_SET(t, | |
330 | CREATE_FILE, | |
331 | TRUNCATE_FILE, | |
332 | CREATE_DIRECTORY, | |
df8dee85 | 333 | EMPTY_DIRECTORY, |
3f93da98 ZJS |
334 | TRUNCATE_DIRECTORY, |
335 | CREATE_SUBVOLUME, | |
5fb13eb5 LP |
336 | CREATE_SUBVOLUME_INHERIT_QUOTA, |
337 | CREATE_SUBVOLUME_NEW_QUOTA, | |
3f93da98 ZJS |
338 | CREATE_FIFO, |
339 | CREATE_SYMLINK, | |
340 | CREATE_CHAR_DEVICE, | |
341 | CREATE_BLOCK_DEVICE, | |
342 | COPY_FILES, | |
3f93da98 ZJS |
343 | WRITE_FILE, |
344 | IGNORE_PATH, | |
345 | IGNORE_DIRECTORY_PATH, | |
346 | REMOVE_PATH, | |
347 | RECURSIVE_REMOVE_PATH); | |
348 | } | |
349 | ||
ef43a391 | 350 | static struct Item* find_glob(OrderedHashmap *h, const char *match) { |
3f93da98 | 351 | ItemArray *j; |
b8bb3e8f LP |
352 | Iterator i; |
353 | ||
ef43a391 | 354 | ORDERED_HASHMAP_FOREACH(j, h, i) { |
3f93da98 ZJS |
355 | unsigned n; |
356 | ||
357 | for (n = 0; n < j->count; n++) { | |
358 | Item *item = j->items + n; | |
359 | ||
360 | if (fnmatch(item->path, match, FNM_PATHNAME|FNM_PERIOD) == 0) | |
361 | return item; | |
362 | } | |
363 | } | |
b8bb3e8f LP |
364 | |
365 | return NULL; | |
366 | } | |
367 | ||
17b90525 | 368 | static void load_unix_sockets(void) { |
7fd1b19b | 369 | _cleanup_fclose_ FILE *f = NULL; |
f1ff734f | 370 | int r; |
17b90525 LP |
371 | |
372 | if (unix_sockets) | |
373 | return; | |
374 | ||
f1ff734f | 375 | /* We maintain a cache of the sockets we found in /proc/net/unix to speed things up a little. */ |
17b90525 | 376 | |
548f6937 LP |
377 | unix_sockets = set_new(&path_hash_ops); |
378 | if (!unix_sockets) { | |
379 | log_oom(); | |
17b90525 | 380 | return; |
548f6937 | 381 | } |
17b90525 | 382 | |
fdcad0c2 | 383 | f = fopen("/proc/net/unix", "re"); |
f1ff734f LP |
384 | if (!f) { |
385 | log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_WARNING, errno, | |
386 | "Failed to open /proc/net/unix, ignoring: %m"); | |
387 | goto fail; | |
388 | } | |
17b90525 | 389 | |
fdcad0c2 | 390 | /* Skip header */ |
f1ff734f LP |
391 | r = read_line(f, LONG_LINE_MAX, NULL); |
392 | if (r < 0) { | |
393 | log_warning_errno(r, "Failed to skip /proc/net/unix header line: %m"); | |
394 | goto fail; | |
395 | } | |
396 | if (r == 0) { | |
397 | log_warning("Premature end of file reading /proc/net/unix."); | |
17b90525 | 398 | goto fail; |
f1ff734f | 399 | } |
17b90525 LP |
400 | |
401 | for (;;) { | |
f1ff734f | 402 | _cleanup_free_ char *line = NULL; |
17b90525 | 403 | char *p, *s; |
17b90525 | 404 | |
f1ff734f LP |
405 | r = read_line(f, LONG_LINE_MAX, &line); |
406 | if (r < 0) { | |
407 | log_warning_errno(r, "Failed to read /proc/net/unix line, ignoring: %m"); | |
408 | goto fail; | |
409 | } | |
410 | if (r == 0) /* EOF */ | |
17b90525 LP |
411 | break; |
412 | ||
fdcad0c2 LP |
413 | p = strchr(line, ':'); |
414 | if (!p) | |
415 | continue; | |
416 | ||
417 | if (strlen(p) < 37) | |
17b90525 LP |
418 | continue; |
419 | ||
fdcad0c2 | 420 | p += 37; |
17b90525 | 421 | p += strspn(p, WHITESPACE); |
fdcad0c2 | 422 | p += strcspn(p, WHITESPACE); /* skip one more word */ |
17b90525 LP |
423 | p += strspn(p, WHITESPACE); |
424 | ||
425 | if (*p != '/') | |
426 | continue; | |
427 | ||
fdcad0c2 | 428 | s = strdup(p); |
f1ff734f LP |
429 | if (!s) { |
430 | log_oom(); | |
17b90525 | 431 | goto fail; |
f1ff734f | 432 | } |
17b90525 | 433 | |
858d36c1 | 434 | path_simplify(s, false); |
4ff21d85 | 435 | |
f1ff734f LP |
436 | r = set_consume(unix_sockets, s); |
437 | if (r < 0 && r != -EEXIST) { | |
438 | log_warning_errno(r, "Failed to add AF_UNIX socket to set, ignoring: %m"); | |
ef42202a | 439 | goto fail; |
f1ff734f | 440 | } |
17b90525 LP |
441 | } |
442 | ||
443 | return; | |
444 | ||
445 | fail: | |
f1ff734f | 446 | unix_sockets = set_free_free(unix_sockets); |
17b90525 LP |
447 | } |
448 | ||
449 | static bool unix_socket_alive(const char *fn) { | |
450 | assert(fn); | |
451 | ||
452 | load_unix_sockets(); | |
453 | ||
454 | if (unix_sockets) | |
455 | return !!set_get(unix_sockets, (char*) fn); | |
456 | ||
457 | /* We don't know, so assume yes */ | |
458 | return true; | |
459 | } | |
460 | ||
99d680ac | 461 | static int dir_is_mount_point(DIR *d, const char *subdir) { |
cde684a2 | 462 | |
99d680ac KS |
463 | int mount_id_parent, mount_id; |
464 | int r_p, r; | |
465 | ||
cbfb8679 | 466 | r_p = name_to_handle_at_loop(dirfd(d), ".", NULL, &mount_id_parent, 0); |
99d680ac KS |
467 | if (r_p < 0) |
468 | r_p = -errno; | |
469 | ||
cbfb8679 | 470 | r = name_to_handle_at_loop(dirfd(d), subdir, NULL, &mount_id, 0); |
99d680ac KS |
471 | if (r < 0) |
472 | r = -errno; | |
473 | ||
474 | /* got no handle; make no assumptions, return error */ | |
475 | if (r_p < 0 && r < 0) | |
476 | return r_p; | |
477 | ||
478 | /* got both handles; if they differ, it is a mount point */ | |
479 | if (r_p >= 0 && r >= 0) | |
480 | return mount_id_parent != mount_id; | |
481 | ||
482 | /* got only one handle; assume different mount points if one | |
483 | * of both queries was not supported by the filesystem */ | |
4c701096 | 484 | if (IN_SET(r_p, -ENOSYS, -EOPNOTSUPP) || IN_SET(r, -ENOSYS, -EOPNOTSUPP)) |
99d680ac KS |
485 | return true; |
486 | ||
487 | /* return error */ | |
488 | if (r_p < 0) | |
489 | return r_p; | |
490 | return r; | |
491 | } | |
492 | ||
df99a9ef ZJS |
493 | static DIR* xopendirat_nomod(int dirfd, const char *path) { |
494 | DIR *dir; | |
495 | ||
496 | dir = xopendirat(dirfd, path, O_NOFOLLOW|O_NOATIME); | |
1532227a LP |
497 | if (dir) |
498 | return dir; | |
499 | ||
500 | log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); | |
501 | if (errno != EPERM) | |
502 | return NULL; | |
503 | ||
504 | dir = xopendirat(dirfd, path, O_NOFOLLOW); | |
505 | if (!dir) | |
506 | log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); | |
df99a9ef ZJS |
507 | |
508 | return dir; | |
509 | } | |
510 | ||
511 | static DIR* opendir_nomod(const char *path) { | |
512 | return xopendirat_nomod(AT_FDCWD, path); | |
513 | } | |
514 | ||
3b63d2d3 | 515 | static int dir_cleanup( |
78a92a5a | 516 | Item *i, |
3b63d2d3 LP |
517 | const char *p, |
518 | DIR *d, | |
519 | const struct stat *ds, | |
520 | usec_t cutoff, | |
521 | dev_t rootdev, | |
522 | bool mountpoint, | |
24f3a374 | 523 | int maxdepth, |
265ffa1e LP |
524 | bool keep_this_level) { |
525 | ||
3b63d2d3 LP |
526 | struct dirent *dent; |
527 | struct timespec times[2]; | |
528 | bool deleted = false; | |
3b63d2d3 LP |
529 | int r = 0; |
530 | ||
8fb3f009 | 531 | FOREACH_DIRENT_ALL(dent, d, break) { |
3b63d2d3 LP |
532 | struct stat s; |
533 | usec_t age; | |
7fd1b19b | 534 | _cleanup_free_ char *sub_path = NULL; |
3b63d2d3 | 535 | |
49bfc877 | 536 | if (dot_or_dot_dot(dent->d_name)) |
3b63d2d3 | 537 | continue; |
5008d581 | 538 | |
3b63d2d3 | 539 | if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) { |
ca2f4176 KS |
540 | if (errno == ENOENT) |
541 | continue; | |
5008d581 | 542 | |
ca2f4176 | 543 | /* FUSE, NFS mounts, SELinux might return EACCES */ |
ecc1709c LP |
544 | r = log_full_errno(errno == EACCES ? LOG_DEBUG : LOG_ERR, errno, |
545 | "stat(%s/%s) failed: %m", p, dent->d_name); | |
3b63d2d3 LP |
546 | continue; |
547 | } | |
548 | ||
549 | /* Stay on the same filesystem */ | |
582deb84 ZJS |
550 | if (s.st_dev != rootdev) { |
551 | log_debug("Ignoring \"%s/%s\": different filesystem.", p, dent->d_name); | |
3b63d2d3 | 552 | continue; |
582deb84 | 553 | } |
3b63d2d3 | 554 | |
99d680ac KS |
555 | /* Try to detect bind mounts of the same filesystem instance; they |
556 | * do not differ in device major/minors. This type of query is not | |
557 | * supported on all kernels or filesystem types though. */ | |
582deb84 ZJS |
558 | if (S_ISDIR(s.st_mode) && dir_is_mount_point(d, dent->d_name) > 0) { |
559 | log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.", | |
560 | p, dent->d_name); | |
99d680ac | 561 | continue; |
582deb84 | 562 | } |
99d680ac | 563 | |
605405c6 | 564 | sub_path = strjoin(p, "/", dent->d_name); |
cde684a2 | 565 | if (!sub_path) { |
0d0f0c50 | 566 | r = log_oom(); |
3b63d2d3 LP |
567 | goto finish; |
568 | } | |
569 | ||
570 | /* Is there an item configured for this path? */ | |
ef43a391 | 571 | if (ordered_hashmap_get(items, sub_path)) { |
582deb84 | 572 | log_debug("Ignoring \"%s\": a separate entry exists.", sub_path); |
3b63d2d3 | 573 | continue; |
582deb84 | 574 | } |
3b63d2d3 | 575 | |
582deb84 ZJS |
576 | if (find_glob(globs, sub_path)) { |
577 | log_debug("Ignoring \"%s\": a separate glob exists.", sub_path); | |
b8bb3e8f | 578 | continue; |
582deb84 | 579 | } |
b8bb3e8f | 580 | |
3b63d2d3 LP |
581 | if (S_ISDIR(s.st_mode)) { |
582 | ||
583 | if (mountpoint && | |
584 | streq(dent->d_name, "lost+found") && | |
582deb84 ZJS |
585 | s.st_uid == 0) { |
586 | log_debug("Ignoring \"%s\".", sub_path); | |
3b63d2d3 | 587 | continue; |
582deb84 | 588 | } |
3b63d2d3 LP |
589 | |
590 | if (maxdepth <= 0) | |
582deb84 | 591 | log_warning("Reached max depth on \"%s\".", sub_path); |
3b63d2d3 | 592 | else { |
7fd1b19b | 593 | _cleanup_closedir_ DIR *sub_dir; |
3b63d2d3 LP |
594 | int q; |
595 | ||
df99a9ef | 596 | sub_dir = xopendirat_nomod(dirfd(d), dent->d_name); |
cde684a2 | 597 | if (!sub_dir) { |
582deb84 ZJS |
598 | if (errno != ENOENT) |
599 | r = log_error_errno(errno, "opendir(%s) failed: %m", sub_path); | |
3b63d2d3 LP |
600 | |
601 | continue; | |
602 | } | |
603 | ||
78a92a5a | 604 | q = dir_cleanup(i, sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1, false); |
3b63d2d3 LP |
605 | if (q < 0) |
606 | r = q; | |
607 | } | |
608 | ||
24f3a374 LP |
609 | /* Note: if you are wondering why we don't |
610 | * support the sticky bit for excluding | |
611 | * directories from cleaning like we do it for | |
612 | * other file system objects: well, the sticky | |
613 | * bit already has a meaning for directories, | |
614 | * so we don't want to overload that. */ | |
615 | ||
582deb84 ZJS |
616 | if (keep_this_level) { |
617 | log_debug("Keeping \"%s\".", sub_path); | |
24f3a374 | 618 | continue; |
582deb84 | 619 | } |
24f3a374 | 620 | |
3b63d2d3 | 621 | /* Ignore ctime, we change it when deleting */ |
582deb84 ZJS |
622 | age = timespec_load(&s.st_mtim); |
623 | if (age >= cutoff) { | |
624 | char a[FORMAT_TIMESTAMP_MAX]; | |
625 | /* Follows spelling in stat(1). */ | |
626 | log_debug("Directory \"%s\": modify time %s is too new.", | |
627 | sub_path, | |
628 | format_timestamp_us(a, sizeof(a), age)); | |
3b63d2d3 | 629 | continue; |
582deb84 ZJS |
630 | } |
631 | ||
632 | age = timespec_load(&s.st_atim); | |
633 | if (age >= cutoff) { | |
634 | char a[FORMAT_TIMESTAMP_MAX]; | |
635 | log_debug("Directory \"%s\": access time %s is too new.", | |
636 | sub_path, | |
637 | format_timestamp_us(a, sizeof(a), age)); | |
638 | continue; | |
639 | } | |
3b63d2d3 | 640 | |
61253220 ZJS |
641 | log_debug("Removing directory \"%s\".", sub_path); |
642 | if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) | |
920ce828 LP |
643 | if (!IN_SET(errno, ENOENT, ENOTEMPTY)) |
644 | r = log_error_errno(errno, "rmdir(%s): %m", sub_path); | |
3b63d2d3 LP |
645 | |
646 | } else { | |
9c73736d LP |
647 | /* Skip files for which the sticky bit is |
648 | * set. These are semantics we define, and are | |
649 | * unknown elsewhere. See XDG_RUNTIME_DIR | |
650 | * specification for details. */ | |
582deb84 ZJS |
651 | if (s.st_mode & S_ISVTX) { |
652 | log_debug("Skipping \"%s\": sticky bit set.", sub_path); | |
9c73736d | 653 | continue; |
582deb84 | 654 | } |
9c73736d | 655 | |
582deb84 | 656 | if (mountpoint && S_ISREG(s.st_mode)) |
1542c01b ZJS |
657 | if (s.st_uid == 0 && STR_IN_SET(dent->d_name, |
658 | ".journal", | |
659 | "aquota.user", | |
660 | "aquota.group")) { | |
582deb84 | 661 | log_debug("Skipping \"%s\".", sub_path); |
3b63d2d3 | 662 | continue; |
582deb84 | 663 | } |
3b63d2d3 | 664 | |
17b90525 | 665 | /* Ignore sockets that are listed in /proc/net/unix */ |
582deb84 ZJS |
666 | if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path)) { |
667 | log_debug("Skipping \"%s\": live socket.", sub_path); | |
17b90525 | 668 | continue; |
582deb84 | 669 | } |
17b90525 | 670 | |
78ab08eb | 671 | /* Ignore device nodes */ |
582deb84 ZJS |
672 | if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) { |
673 | log_debug("Skipping \"%s\": a device.", sub_path); | |
78ab08eb | 674 | continue; |
582deb84 | 675 | } |
78ab08eb | 676 | |
24f3a374 LP |
677 | /* Keep files on this level around if this is |
678 | * requested */ | |
582deb84 ZJS |
679 | if (keep_this_level) { |
680 | log_debug("Keeping \"%s\".", sub_path); | |
24f3a374 | 681 | continue; |
582deb84 | 682 | } |
24f3a374 | 683 | |
582deb84 ZJS |
684 | age = timespec_load(&s.st_mtim); |
685 | if (age >= cutoff) { | |
686 | char a[FORMAT_TIMESTAMP_MAX]; | |
687 | /* Follows spelling in stat(1). */ | |
688 | log_debug("File \"%s\": modify time %s is too new.", | |
689 | sub_path, | |
690 | format_timestamp_us(a, sizeof(a), age)); | |
3b63d2d3 | 691 | continue; |
582deb84 | 692 | } |
3b63d2d3 | 693 | |
582deb84 ZJS |
694 | age = timespec_load(&s.st_atim); |
695 | if (age >= cutoff) { | |
696 | char a[FORMAT_TIMESTAMP_MAX]; | |
697 | log_debug("File \"%s\": access time %s is too new.", | |
698 | sub_path, | |
699 | format_timestamp_us(a, sizeof(a), age)); | |
700 | continue; | |
701 | } | |
3b63d2d3 | 702 | |
582deb84 ZJS |
703 | age = timespec_load(&s.st_ctim); |
704 | if (age >= cutoff) { | |
705 | char a[FORMAT_TIMESTAMP_MAX]; | |
706 | log_debug("File \"%s\": change time %s is too new.", | |
707 | sub_path, | |
708 | format_timestamp_us(a, sizeof(a), age)); | |
709 | continue; | |
3b63d2d3 LP |
710 | } |
711 | ||
582deb84 ZJS |
712 | log_debug("unlink \"%s\"", sub_path); |
713 | ||
714 | if (unlinkat(dirfd(d), dent->d_name, 0) < 0) | |
715 | if (errno != ENOENT) | |
716 | r = log_error_errno(errno, "unlink(%s): %m", sub_path); | |
717 | ||
3b63d2d3 LP |
718 | deleted = true; |
719 | } | |
720 | } | |
721 | ||
722 | finish: | |
723 | if (deleted) { | |
582deb84 ZJS |
724 | usec_t age1, age2; |
725 | char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX]; | |
726 | ||
3b63d2d3 LP |
727 | /* Restore original directory timestamps */ |
728 | times[0] = ds->st_atim; | |
729 | times[1] = ds->st_mtim; | |
730 | ||
582deb84 ZJS |
731 | age1 = timespec_load(&ds->st_atim); |
732 | age2 = timespec_load(&ds->st_mtim); | |
733 | log_debug("Restoring access and modification time on \"%s\": %s, %s", | |
734 | p, | |
735 | format_timestamp_us(a, sizeof(a), age1), | |
736 | format_timestamp_us(b, sizeof(b), age2)); | |
3b63d2d3 | 737 | if (futimens(dirfd(d), times) < 0) |
56f64d95 | 738 | log_error_errno(errno, "utimensat(%s): %m", p); |
3b63d2d3 LP |
739 | } |
740 | ||
3b63d2d3 LP |
741 | return r; |
742 | } | |
743 | ||
5579f856 LP |
744 | static bool dangerous_hardlinks(void) { |
745 | _cleanup_free_ char *value = NULL; | |
746 | static int cached = -1; | |
747 | int r; | |
748 | ||
749 | /* Check whether the fs.protected_hardlinks sysctl is on. If we can't determine it we assume its off, as that's | |
750 | * what the upstream default is. */ | |
751 | ||
752 | if (cached >= 0) | |
753 | return cached; | |
754 | ||
755 | r = read_one_line_file("/proc/sys/fs/protected_hardlinks", &value); | |
756 | if (r < 0) { | |
757 | log_debug_errno(r, "Failed to read fs.protected_hardlinks sysctl: %m"); | |
758 | return true; | |
759 | } | |
760 | ||
761 | r = parse_boolean(value); | |
762 | if (r < 0) { | |
763 | log_debug_errno(r, "Failed to parse fs.protected_hardlinks sysctl: %m"); | |
764 | return true; | |
765 | } | |
766 | ||
767 | cached = r == 0; | |
768 | return cached; | |
769 | } | |
770 | ||
774f79b5 | 771 | static bool hardlink_vulnerable(const struct stat *st) { |
5579f856 LP |
772 | assert(st); |
773 | ||
774 | return !S_ISDIR(st->st_mode) && st->st_nlink > 1 && dangerous_hardlinks(); | |
775 | } | |
776 | ||
9d874aec | 777 | static int fd_set_perms(Item *i, int fd, const char *path, const struct stat *st) { |
b206ac8e | 778 | struct stat stbuf; |
1924a97d | 779 | |
cde684a2 | 780 | assert(i); |
936f6bdb | 781 | assert(fd); |
4dc7bfdf | 782 | assert(path); |
48b8aaa8 | 783 | |
936f6bdb FB |
784 | if (!i->mode_set && !i->uid_set && !i->gid_set) |
785 | goto shortcut; | |
1924a97d | 786 | |
b206ac8e FB |
787 | if (!st) { |
788 | if (fstat(fd, &stbuf) < 0) | |
789 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
790 | st = &stbuf; | |
791 | } | |
792 | ||
936f6bdb | 793 | if (hardlink_vulnerable(st)) { |
5579f856 LP |
794 | log_error("Refusing to set permissions on hardlinked file %s while the fs.protected_hardlinks sysctl is turned off.", path); |
795 | return -EPERM; | |
796 | } | |
797 | ||
51207ca1 | 798 | if (i->mode_set) { |
936f6bdb | 799 | if (S_ISLNK(st->st_mode)) |
51207ca1 LP |
800 | log_debug("Skipping mode fix for symlink %s.", path); |
801 | else { | |
48b8aaa8 LP |
802 | mode_t m = i->mode; |
803 | ||
804 | if (i->mask_perms) { | |
936f6bdb | 805 | if (!(st->st_mode & 0111)) |
48b8aaa8 | 806 | m &= ~0111; |
936f6bdb | 807 | if (!(st->st_mode & 0222)) |
7d6884b6 | 808 | m &= ~0222; |
936f6bdb | 809 | if (!(st->st_mode & 0444)) |
48b8aaa8 | 810 | m &= ~0444; |
936f6bdb | 811 | if (!S_ISDIR(st->st_mode)) |
48b8aaa8 LP |
812 | m &= ~07000; /* remove sticky/sgid/suid bit, unless directory */ |
813 | } | |
abef3f91 | 814 | |
936f6bdb FB |
815 | if (m == (st->st_mode & 07777)) |
816 | log_debug("\"%s\" has correct mode %o already.", path, st->st_mode); | |
48b8aaa8 | 817 | else { |
51207ca1 | 818 | log_debug("Changing \"%s\" to mode %o.", path, m); |
4dfaa528 FB |
819 | if (fchmod_opath(fd, m) < 0) |
820 | return log_error_errno(errno, "fchmod() of %s failed: %m", path); | |
48b8aaa8 | 821 | } |
062e01bb | 822 | } |
51207ca1 | 823 | } |
062e01bb | 824 | |
936f6bdb FB |
825 | if ((i->uid_set && i->uid != st->st_uid) || |
826 | (i->gid_set && i->gid != st->st_gid)) { | |
51207ca1 LP |
827 | log_debug("Changing \"%s\" to owner "UID_FMT":"GID_FMT, |
828 | path, | |
829 | i->uid_set ? i->uid : UID_INVALID, | |
830 | i->gid_set ? i->gid : GID_INVALID); | |
831 | ||
936f6bdb FB |
832 | if (fchownat(fd, |
833 | "", | |
834 | i->uid_set ? i->uid : UID_INVALID, | |
835 | i->gid_set ? i->gid : GID_INVALID, | |
836 | AT_EMPTY_PATH) < 0) | |
837 | return log_error_errno(errno, "fchownat() of %s failed: %m", path); | |
582deb84 | 838 | } |
062e01bb | 839 | |
59793c8f | 840 | shortcut: |
08c84981 | 841 | return label_fix(path, 0); |
062e01bb MS |
842 | } |
843 | ||
5ec9d065 FB |
844 | static int path_open_parent_safe(const char *path) { |
845 | _cleanup_free_ char *dn = NULL; | |
846 | int fd; | |
847 | ||
848 | if (path_equal(path, "/") || !path_is_normalized(path)) { | |
849 | log_error("Failed to open parent of '%s': invalid path.", path); | |
850 | return -EINVAL; | |
851 | } | |
852 | ||
853 | dn = dirname_malloc(path); | |
854 | if (!dn) | |
855 | return log_oom(); | |
856 | ||
857 | fd = chase_symlinks(dn, NULL, CHASE_OPEN|CHASE_SAFE, NULL); | |
858 | if (fd == -EPERM) | |
859 | return log_error_errno(fd, "Unsafe symlinks encountered in %s, refusing.", path); | |
860 | if (fd < 0) | |
861 | return log_error_errno(fd, "Failed to validate path %s: %m", path); | |
862 | ||
863 | return fd; | |
864 | } | |
865 | ||
addc3e30 FB |
866 | static int path_open_safe(const char *path) { |
867 | int fd; | |
868 | ||
869 | /* path_open_safe() returns a file descriptor opened with O_PATH after | |
870 | * verifying that the path doesn't contain unsafe transitions, except | |
871 | * for its final component as the function does not follow symlink. */ | |
872 | ||
873 | assert(path); | |
874 | ||
875 | if (!path_is_normalized(path)) { | |
876 | log_error("Failed to open invalid path '%s'.", path); | |
877 | return -EINVAL; | |
878 | } | |
879 | ||
880 | fd = chase_symlinks(path, NULL, CHASE_OPEN|CHASE_SAFE|CHASE_NOFOLLOW, NULL); | |
881 | if (fd == -EPERM) | |
882 | return log_error_errno(fd, "Unsafe symlinks encountered in %s, refusing.", path); | |
883 | if (fd < 0) | |
884 | return log_error_errno(fd, "Failed to validate path %s: %m", path); | |
885 | ||
886 | return fd; | |
887 | } | |
888 | ||
936f6bdb FB |
889 | static int path_set_perms(Item *i, const char *path) { |
890 | _cleanup_close_ int fd = -1; | |
936f6bdb FB |
891 | |
892 | assert(i); | |
893 | assert(path); | |
894 | ||
addc3e30 | 895 | fd = path_open_safe(path); |
54946021 | 896 | if (fd < 0) |
addc3e30 | 897 | return fd; |
d460ba18 | 898 | |
9d874aec | 899 | return fd_set_perms(i, fd, path, NULL); |
936f6bdb FB |
900 | } |
901 | ||
bd550f78 | 902 | static int parse_xattrs_from_arg(Item *i) { |
ebf4e801 MW |
903 | const char *p; |
904 | int r; | |
905 | ||
906 | assert(i); | |
505ef0e3 | 907 | assert(i->argument); |
ebf4e801 | 908 | |
ebf4e801 MW |
909 | p = i->argument; |
910 | ||
4034a06d | 911 | for (;;) { |
4cef1923 | 912 | _cleanup_free_ char *name = NULL, *value = NULL, *xattr = NULL; |
4034a06d | 913 | |
12ba2c44 | 914 | r = extract_first_word(&p, &xattr, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE); |
4034a06d | 915 | if (r < 0) |
bd550f78 | 916 | log_warning_errno(r, "Failed to parse extended attribute '%s', ignoring: %m", p); |
4034a06d LP |
917 | if (r <= 0) |
918 | break; | |
505ef0e3 | 919 | |
4cef1923 | 920 | r = split_pair(xattr, "=", &name, &value); |
ebf4e801 | 921 | if (r < 0) { |
4034a06d | 922 | log_warning_errno(r, "Failed to parse extended attribute, ignoring: %s", xattr); |
ebf4e801 MW |
923 | continue; |
924 | } | |
505ef0e3 | 925 | |
4034a06d | 926 | if (isempty(name) || isempty(value)) { |
bd550f78 | 927 | log_warning("Malformed extended attribute found, ignoring: %s", xattr); |
ebf4e801 MW |
928 | continue; |
929 | } | |
505ef0e3 | 930 | |
4034a06d | 931 | if (strv_push_pair(&i->xattrs, name, value) < 0) |
ebf4e801 | 932 | return log_oom(); |
505ef0e3 | 933 | |
4034a06d | 934 | name = value = NULL; |
ebf4e801 MW |
935 | } |
936 | ||
4034a06d | 937 | return 0; |
ebf4e801 MW |
938 | } |
939 | ||
9d874aec | 940 | static int fd_set_xattrs(Item *i, int fd, const char *path, const struct stat *st) { |
34d26777 | 941 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
ebf4e801 MW |
942 | char **name, **value; |
943 | ||
944 | assert(i); | |
936f6bdb | 945 | assert(fd); |
4dc7bfdf | 946 | assert(path); |
936f6bdb FB |
947 | |
948 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); | |
ebf4e801 | 949 | |
ebf4e801 | 950 | STRV_FOREACH_PAIR(name, value, i->xattrs) { |
bd550f78 | 951 | log_debug("Setting extended attribute '%s=%s' on %s.", *name, *value, path); |
936f6bdb | 952 | if (setxattr(procfs_path, *name, *value, strlen(*value), 0) < 0) |
25f027c5 ZJS |
953 | return log_error_errno(errno, "Setting extended attribute %s=%s on %s failed: %m", |
954 | *name, *value, path); | |
ebf4e801 MW |
955 | } |
956 | return 0; | |
957 | } | |
958 | ||
936f6bdb FB |
959 | static int path_set_xattrs(Item *i, const char *path) { |
960 | _cleanup_close_ int fd = -1; | |
961 | ||
962 | assert(i); | |
963 | assert(path); | |
964 | ||
addc3e30 | 965 | fd = path_open_safe(path); |
936f6bdb | 966 | if (fd < 0) |
addc3e30 | 967 | return fd; |
936f6bdb | 968 | |
9d874aec | 969 | return fd_set_xattrs(i, fd, path, NULL); |
936f6bdb FB |
970 | } |
971 | ||
bd550f78 | 972 | static int parse_acls_from_arg(Item *item) { |
349cc4a5 | 973 | #if HAVE_ACL |
f8eeeaf9 | 974 | int r; |
f8eeeaf9 ZJS |
975 | |
976 | assert(item); | |
977 | ||
50d9e46d ZJS |
978 | /* If force (= modify) is set, we will not modify the acl |
979 | * afterwards, so the mask can be added now if necessary. */ | |
bd550f78 | 980 | |
50d9e46d | 981 | r = parse_acl(item->argument, &item->acl_access, &item->acl_default, !item->force); |
f8eeeaf9 | 982 | if (r < 0) |
4034a06d | 983 | log_warning_errno(r, "Failed to parse ACL \"%s\": %m. Ignoring", item->argument); |
f8eeeaf9 ZJS |
984 | #else |
985 | log_warning_errno(ENOSYS, "ACLs are not supported. Ignoring"); | |
986 | #endif | |
987 | ||
988 | return 0; | |
989 | } | |
990 | ||
349cc4a5 | 991 | #if HAVE_ACL |
48b8aaa8 LP |
992 | static int path_set_acl(const char *path, const char *pretty, acl_type_t type, acl_t acl, bool modify) { |
993 | _cleanup_(acl_free_charpp) char *t = NULL; | |
dd4105b0 | 994 | _cleanup_(acl_freep) acl_t dup = NULL; |
50d9e46d ZJS |
995 | int r; |
996 | ||
d873e877 HPD |
997 | /* Returns 0 for success, positive error if already warned, |
998 | * negative error otherwise. */ | |
999 | ||
50d9e46d | 1000 | if (modify) { |
dd4105b0 | 1001 | r = acls_for_file(path, type, acl, &dup); |
50d9e46d ZJS |
1002 | if (r < 0) |
1003 | return r; | |
50d9e46d | 1004 | |
dd4105b0 ZJS |
1005 | r = calc_acl_mask_if_needed(&dup); |
1006 | if (r < 0) | |
1007 | return r; | |
1008 | } else { | |
1009 | dup = acl_dup(acl); | |
1010 | if (!dup) | |
1011 | return -errno; | |
1012 | ||
1013 | /* the mask was already added earlier if needed */ | |
1014 | } | |
1015 | ||
1016 | r = add_base_acls_if_needed(&dup, path); | |
1017 | if (r < 0) | |
1018 | return r; | |
1019 | ||
582deb84 | 1020 | t = acl_to_any_text(dup, NULL, ',', TEXT_ABBREVIATE); |
48b8aaa8 | 1021 | log_debug("Setting %s ACL %s on %s.", |
582deb84 | 1022 | type == ACL_TYPE_ACCESS ? "access" : "default", |
48b8aaa8 | 1023 | strna(t), pretty); |
50d9e46d | 1024 | |
582deb84 ZJS |
1025 | r = acl_set_file(path, type, dup); |
1026 | if (r < 0) | |
3ea40b78 LP |
1027 | /* Return positive to indicate we already warned */ |
1028 | return -log_error_errno(errno, | |
1029 | "Setting %s ACL \"%s\" on %s failed: %m", | |
1030 | type == ACL_TYPE_ACCESS ? "access" : "default", | |
48b8aaa8 | 1031 | strna(t), pretty); |
d873e877 | 1032 | |
582deb84 | 1033 | return 0; |
50d9e46d | 1034 | } |
35888b67 | 1035 | #endif |
50d9e46d | 1036 | |
9d874aec | 1037 | static int fd_set_acls(Item *item, int fd, const char *path, const struct stat *st) { |
d873e877 | 1038 | int r = 0; |
349cc4a5 | 1039 | #if HAVE_ACL |
34d26777 | 1040 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
b206ac8e | 1041 | struct stat stbuf; |
48b8aaa8 | 1042 | |
f8eeeaf9 | 1043 | assert(item); |
936f6bdb | 1044 | assert(fd); |
4dc7bfdf | 1045 | assert(path); |
48b8aaa8 | 1046 | |
b206ac8e FB |
1047 | if (!st) { |
1048 | if (fstat(fd, &stbuf) < 0) | |
1049 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
1050 | st = &stbuf; | |
1051 | } | |
1052 | ||
936f6bdb | 1053 | if (hardlink_vulnerable(st)) { |
5579f856 LP |
1054 | log_error("Refusing to set ACLs on hardlinked file %s while the fs.protected_hardlinks sysctl is turned off.", path); |
1055 | return -EPERM; | |
1056 | } | |
1057 | ||
936f6bdb | 1058 | if (S_ISLNK(st->st_mode)) { |
48b8aaa8 LP |
1059 | log_debug("Skipping ACL fix for symlink %s.", path); |
1060 | return 0; | |
1061 | } | |
1062 | ||
936f6bdb | 1063 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); |
48b8aaa8 | 1064 | |
d873e877 | 1065 | if (item->acl_access) |
936f6bdb | 1066 | r = path_set_acl(procfs_path, path, ACL_TYPE_ACCESS, item->acl_access, item->force); |
f8eeeaf9 | 1067 | |
2667385b RM |
1068 | /* set only default acls to folders */ |
1069 | if (r == 0 && item->acl_default && S_ISDIR(st->st_mode)) | |
936f6bdb | 1070 | r = path_set_acl(procfs_path, path, ACL_TYPE_DEFAULT, item->acl_default, item->force); |
f8eeeaf9 | 1071 | |
d873e877 HPD |
1072 | if (r > 0) |
1073 | return -r; /* already warned */ | |
936f6bdb | 1074 | if (r == -EOPNOTSUPP) { |
d873e877 HPD |
1075 | log_debug_errno(r, "ACLs not supported by file system at %s", path); |
1076 | return 0; | |
936f6bdb FB |
1077 | } |
1078 | if (r < 0) | |
1079 | return log_error_errno(r, "ACL operation on \"%s\" failed: %m", path); | |
d873e877 HPD |
1080 | #endif |
1081 | return r; | |
f8eeeaf9 ZJS |
1082 | } |
1083 | ||
936f6bdb FB |
1084 | static int path_set_acls(Item *item, const char *path) { |
1085 | int r = 0; | |
545cdb90 | 1086 | #if HAVE_ACL |
936f6bdb | 1087 | _cleanup_close_ int fd = -1; |
936f6bdb FB |
1088 | |
1089 | assert(item); | |
1090 | assert(path); | |
1091 | ||
addc3e30 | 1092 | fd = path_open_safe(path); |
936f6bdb | 1093 | if (fd < 0) |
addc3e30 | 1094 | return fd; |
936f6bdb | 1095 | |
9d874aec | 1096 | r = fd_set_acls(item, fd, path, NULL); |
545cdb90 YW |
1097 | #endif |
1098 | return r; | |
1099 | } | |
936f6bdb | 1100 | |
88ec4dfa LP |
1101 | #define ATTRIBUTES_ALL \ |
1102 | (FS_NOATIME_FL | \ | |
1103 | FS_SYNC_FL | \ | |
1104 | FS_DIRSYNC_FL | \ | |
1105 | FS_APPEND_FL | \ | |
1106 | FS_COMPR_FL | \ | |
1107 | FS_NODUMP_FL | \ | |
1108 | FS_EXTENT_FL | \ | |
1109 | FS_IMMUTABLE_FL | \ | |
1110 | FS_JOURNAL_DATA_FL | \ | |
1111 | FS_SECRM_FL | \ | |
1112 | FS_UNRM_FL | \ | |
1113 | FS_NOTAIL_FL | \ | |
1114 | FS_TOPDIR_FL | \ | |
1115 | FS_NOCOW_FL) | |
1116 | ||
bd550f78 | 1117 | static int parse_attribute_from_arg(Item *item) { |
88ec4dfa LP |
1118 | |
1119 | static const struct { | |
1120 | char character; | |
1121 | unsigned value; | |
1122 | } attributes[] = { | |
1123 | { 'A', FS_NOATIME_FL }, /* do not update atime */ | |
1124 | { 'S', FS_SYNC_FL }, /* Synchronous updates */ | |
1125 | { 'D', FS_DIRSYNC_FL }, /* dirsync behaviour (directories only) */ | |
1126 | { 'a', FS_APPEND_FL }, /* writes to file may only append */ | |
1127 | { 'c', FS_COMPR_FL }, /* Compress file */ | |
1128 | { 'd', FS_NODUMP_FL }, /* do not dump file */ | |
8c35b2ca | 1129 | { 'e', FS_EXTENT_FL }, /* Extents */ |
88ec4dfa LP |
1130 | { 'i', FS_IMMUTABLE_FL }, /* Immutable file */ |
1131 | { 'j', FS_JOURNAL_DATA_FL }, /* Reserved for ext3 */ | |
1132 | { 's', FS_SECRM_FL }, /* Secure deletion */ | |
1133 | { 'u', FS_UNRM_FL }, /* Undelete */ | |
1134 | { 't', FS_NOTAIL_FL }, /* file tail should not be merged */ | |
13e785f7 | 1135 | { 'T', FS_TOPDIR_FL }, /* Top of directory hierarchies */ |
88ec4dfa | 1136 | { 'C', FS_NOCOW_FL }, /* Do not cow file */ |
22c3a6ca | 1137 | }; |
88ec4dfa | 1138 | |
22c3a6ca GB |
1139 | enum { |
1140 | MODE_ADD, | |
1141 | MODE_DEL, | |
1142 | MODE_SET | |
1143 | } mode = MODE_ADD; | |
22c3a6ca | 1144 | |
88ec4dfa LP |
1145 | unsigned value = 0, mask = 0; |
1146 | const char *p; | |
22c3a6ca | 1147 | |
88ec4dfa LP |
1148 | assert(item); |
1149 | ||
1150 | p = item->argument; | |
1151 | if (p) { | |
1152 | if (*p == '+') { | |
1153 | mode = MODE_ADD; | |
1154 | p++; | |
1155 | } else if (*p == '-') { | |
1156 | mode = MODE_DEL; | |
1157 | p++; | |
1158 | } else if (*p == '=') { | |
1159 | mode = MODE_SET; | |
1160 | p++; | |
1161 | } | |
22c3a6ca GB |
1162 | } |
1163 | ||
88ec4dfa LP |
1164 | if (isempty(p) && mode != MODE_SET) { |
1165 | log_error("Setting file attribute on '%s' needs an attribute specification.", item->path); | |
22c3a6ca GB |
1166 | return -EINVAL; |
1167 | } | |
88ec4dfa LP |
1168 | |
1169 | for (; p && *p ; p++) { | |
1170 | unsigned i, v; | |
1171 | ||
1172 | for (i = 0; i < ELEMENTSOF(attributes); i++) | |
1173 | if (*p == attributes[i].character) | |
1174 | break; | |
1175 | ||
1176 | if (i >= ELEMENTSOF(attributes)) { | |
1177 | log_error("Unknown file attribute '%c' on '%s'.", *p, item->path); | |
22c3a6ca GB |
1178 | return -EINVAL; |
1179 | } | |
88ec4dfa LP |
1180 | |
1181 | v = attributes[i].value; | |
1182 | ||
3742095b | 1183 | SET_FLAG(value, v, IN_SET(mode, MODE_ADD, MODE_SET)); |
88ec4dfa LP |
1184 | |
1185 | mask |= v; | |
22c3a6ca GB |
1186 | } |
1187 | ||
1188 | if (mode == MODE_SET) | |
88ec4dfa | 1189 | mask |= ATTRIBUTES_ALL; |
22c3a6ca | 1190 | |
88ec4dfa | 1191 | assert(mask != 0); |
22c3a6ca | 1192 | |
88ec4dfa LP |
1193 | item->attribute_mask = mask; |
1194 | item->attribute_value = value; | |
1195 | item->attribute_set = true; | |
22c3a6ca GB |
1196 | |
1197 | return 0; | |
22c3a6ca GB |
1198 | } |
1199 | ||
9d874aec | 1200 | static int fd_set_attribute(Item *item, int fd, const char *path, const struct stat *st) { |
936f6bdb | 1201 | _cleanup_close_ int procfs_fd = -1; |
b206ac8e | 1202 | struct stat stbuf; |
88ec4dfa LP |
1203 | unsigned f; |
1204 | int r; | |
22c3a6ca | 1205 | |
4dc7bfdf FB |
1206 | assert(item); |
1207 | assert(fd); | |
1208 | assert(path); | |
1209 | ||
88ec4dfa | 1210 | if (!item->attribute_set || item->attribute_mask == 0) |
22c3a6ca | 1211 | return 0; |
22c3a6ca | 1212 | |
b206ac8e FB |
1213 | if (!st) { |
1214 | if (fstat(fd, &stbuf) < 0) | |
1215 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
1216 | st = &stbuf; | |
1217 | } | |
1218 | ||
88ec4dfa LP |
1219 | /* Issuing the file attribute ioctls on device nodes is not |
1220 | * safe, as that will be delivered to the drivers, not the | |
1221 | * file system containing the device node. */ | |
936f6bdb | 1222 | if (!S_ISREG(st->st_mode) && !S_ISDIR(st->st_mode)) { |
88ec4dfa LP |
1223 | log_error("Setting file flags is only supported on regular files and directories, cannot set on '%s'.", path); |
1224 | return -EINVAL; | |
1225 | } | |
1226 | ||
1227 | f = item->attribute_value & item->attribute_mask; | |
1228 | ||
1229 | /* Mask away directory-specific flags */ | |
936f6bdb | 1230 | if (!S_ISDIR(st->st_mode)) |
22c3a6ca | 1231 | f &= ~FS_DIRSYNC_FL; |
88ec4dfa | 1232 | |
f2324783 | 1233 | procfs_fd = fd_reopen(fd, O_RDONLY|O_CLOEXEC|O_NOATIME); |
936f6bdb | 1234 | if (procfs_fd < 0) |
c3e03778 | 1235 | return log_error_errno(procfs_fd, "Failed to re-open '%s': %m", path); |
936f6bdb | 1236 | |
db9a4254 | 1237 | r = chattr_fd(procfs_fd, f, item->attribute_mask, NULL); |
22c3a6ca | 1238 | if (r < 0) |
4c701096 | 1239 | log_full_errno(IN_SET(r, -ENOTTY, -EOPNOTSUPP) ? LOG_DEBUG : LOG_WARNING, |
ad75a97f | 1240 | r, |
15b45fac | 1241 | "Cannot set file attribute for '%s', value=0x%08x, mask=0x%08x, ignoring: %m", |
ad75a97f | 1242 | path, item->attribute_value, item->attribute_mask); |
22c3a6ca GB |
1243 | |
1244 | return 0; | |
1245 | } | |
1246 | ||
936f6bdb FB |
1247 | static int path_set_attribute(Item *item, const char *path) { |
1248 | _cleanup_close_ int fd = -1; | |
936f6bdb FB |
1249 | |
1250 | if (!item->attribute_set || item->attribute_mask == 0) | |
1251 | return 0; | |
1252 | ||
addc3e30 | 1253 | fd = path_open_safe(path); |
936f6bdb | 1254 | if (fd < 0) |
addc3e30 | 1255 | return fd; |
936f6bdb | 1256 | |
9d874aec | 1257 | return fd_set_attribute(item, fd, path, NULL); |
936f6bdb FB |
1258 | } |
1259 | ||
d4e9eb91 | 1260 | static int write_one_file(Item *i, const char *path) { |
551470ec FB |
1261 | _cleanup_close_ int fd = -1, dir_fd = -1; |
1262 | char *bn; | |
31c84ff1 FB |
1263 | int r; |
1264 | ||
1265 | assert(i); | |
1266 | assert(path); | |
1267 | assert(i->argument); | |
1268 | assert(i->type == WRITE_FILE); | |
1269 | ||
551470ec FB |
1270 | /* Validate the path and keep the fd on the directory for opening the |
1271 | * file so we're sure that it can't be changed behind our back. */ | |
1272 | dir_fd = path_open_parent_safe(path); | |
1273 | if (dir_fd < 0) | |
1274 | return dir_fd; | |
1275 | ||
1276 | bn = basename(path); | |
1277 | ||
31c84ff1 | 1278 | /* Follows symlinks */ |
551470ec | 1279 | fd = openat(dir_fd, bn, O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode); |
31c84ff1 FB |
1280 | if (fd < 0) { |
1281 | if (errno == ENOENT) { | |
1282 | log_debug_errno(errno, "Not writing missing file \"%s\": %m", path); | |
1283 | return 0; | |
1284 | } | |
1285 | return log_error_errno(errno, "Failed to open file \"%s\": %m", path); | |
1286 | } | |
1287 | ||
1288 | /* 'w' is allowed to write into any kind of files. */ | |
1289 | log_debug("Writing to \"%s\".", path); | |
1290 | ||
1291 | r = loop_write(fd, i->argument, strlen(i->argument), false); | |
1292 | if (r < 0) | |
1293 | return log_error_errno(r, "Failed to write file \"%s\": %m", path); | |
1294 | ||
9d874aec | 1295 | return fd_set_perms(i, fd, path, NULL); |
31c84ff1 FB |
1296 | } |
1297 | ||
1298 | static int create_file(Item *i, const char *path) { | |
5ec9d065 FB |
1299 | _cleanup_close_ int fd = -1, dir_fd = -1; |
1300 | struct stat stbuf, *st = NULL; | |
1301 | int r = 0; | |
1302 | char *bn; | |
d4e9eb91 | 1303 | |
874f1947 LP |
1304 | assert(i); |
1305 | assert(path); | |
5ec9d065 FB |
1306 | assert(i->type == CREATE_FILE); |
1307 | ||
1308 | /* 'f' operates on regular files exclusively. */ | |
1309 | ||
1310 | /* Validate the path and keep the fd on the directory for opening the | |
1311 | * file so we're sure that it can't be changed behind our back. */ | |
1312 | dir_fd = path_open_parent_safe(path); | |
1313 | if (dir_fd < 0) | |
1314 | return dir_fd; | |
874f1947 | 1315 | |
5ec9d065 | 1316 | bn = basename(path); |
d4e9eb91 | 1317 | |
43ad6e31 | 1318 | RUN_WITH_UMASK(0000) { |
ecabcf8b | 1319 | mac_selinux_create_file_prepare(path, S_IFREG); |
5ec9d065 | 1320 | fd = openat(dir_fd, bn, O_CREAT|O_EXCL|O_NOFOLLOW|O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode); |
ecabcf8b | 1321 | mac_selinux_create_file_clear(); |
5c0d398d | 1322 | } |
d4e9eb91 DR |
1323 | |
1324 | if (fd < 0) { | |
5ec9d065 FB |
1325 | /* Even on a read-only filesystem, open(2) returns EEXIST if the |
1326 | * file already exists. It returns EROFS only if it needs to | |
1327 | * create the file. */ | |
1328 | if (errno != EEXIST) | |
1329 | return log_error_errno(errno, "Failed to create file %s: %m", path); | |
1330 | ||
1331 | /* Re-open the file. At that point it must exist since open(2) | |
1332 | * failed with EEXIST. We still need to check if the perms/mode | |
1333 | * need to be changed. For read-only filesystems, we let | |
1334 | * fd_set_perms() report the error if the perms need to be | |
1335 | * modified. */ | |
1336 | fd = openat(dir_fd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH, i->mode); | |
1337 | if (fd < 0) | |
1338 | return log_error_errno(errno, "Failed to re-open file %s: %m", path); | |
1339 | ||
1340 | if (fstat(fd, &stbuf) < 0) | |
1341 | return log_error_errno(errno, "stat(%s) failed: %m", path); | |
1342 | ||
1343 | if (!S_ISREG(stbuf.st_mode)) { | |
1344 | log_error("%s exists and is not a regular file.", path); | |
1345 | return -EEXIST; | |
49e87292 | 1346 | } |
d4e9eb91 | 1347 | |
5ec9d065 FB |
1348 | st = &stbuf; |
1349 | } else { | |
1350 | ||
1351 | log_debug("\"%s\" has been created.", path); | |
1352 | ||
1353 | if (i->argument) { | |
1354 | log_debug("Writing to \"%s\".", path); | |
f44b28fd | 1355 | |
5ec9d065 FB |
1356 | r = loop_write(fd, i->argument, strlen(i->argument), false); |
1357 | if (r < 0) | |
1358 | return log_error_errno(r, "Failed to write file \"%s\": %m", path); | |
1359 | } | |
d4e9eb91 DR |
1360 | } |
1361 | ||
9d874aec | 1362 | return fd_set_perms(i, fd, path, st); |
5ec9d065 | 1363 | } |
d4e9eb91 | 1364 | |
5ec9d065 | 1365 | static int truncate_file(Item *i, const char *path) { |
14ab804e | 1366 | _cleanup_close_ int fd = -1, dir_fd = -1; |
5ec9d065 FB |
1367 | struct stat stbuf, *st = NULL; |
1368 | bool erofs = false; | |
1369 | int r = 0; | |
14ab804e | 1370 | char *bn; |
5ec9d065 FB |
1371 | |
1372 | assert(i); | |
1373 | assert(path); | |
1374 | assert(i->type == TRUNCATE_FILE); | |
d4e9eb91 | 1375 | |
5ec9d065 FB |
1376 | /* We want to operate on regular file exclusively especially since |
1377 | * O_TRUNC is unspecified if the file is neither a regular file nor a | |
1378 | * fifo nor a terminal device. Therefore we first open the file and make | |
1379 | * sure it's a regular one before truncating it. */ | |
3612fbc1 | 1380 | |
14ab804e FB |
1381 | /* Validate the path and keep the fd on the directory for opening the |
1382 | * file so we're sure that it can't be changed behind our back. */ | |
1383 | dir_fd = path_open_parent_safe(path); | |
1384 | if (dir_fd < 0) | |
1385 | return dir_fd; | |
1386 | ||
1387 | bn = basename(path); | |
1388 | ||
5ec9d065 FB |
1389 | RUN_WITH_UMASK(0000) { |
1390 | mac_selinux_create_file_prepare(path, S_IFREG); | |
14ab804e | 1391 | fd = openat(dir_fd, bn, O_CREAT|O_NOFOLLOW|O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode); |
5ec9d065 FB |
1392 | mac_selinux_create_file_clear(); |
1393 | } | |
1394 | ||
1395 | if (fd < 0) { | |
1396 | if (errno != EROFS) | |
1397 | return log_error_errno(errno, "Failed to open/create file %s: %m", path); | |
1398 | ||
1399 | /* On a read-only filesystem, we don't want to fail if the | |
1400 | * target is already empty and the perms are set. So we still | |
1401 | * proceed with the sanity checks and let the remaining | |
1402 | * operations fail with EROFS if they try to modify the target | |
1403 | * file. */ | |
1404 | ||
14ab804e | 1405 | fd = openat(dir_fd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH, i->mode); |
5ec9d065 FB |
1406 | if (fd < 0) { |
1407 | if (errno == ENOENT) { | |
1408 | log_error("Cannot create file %s on a read-only file system.", path); | |
1409 | return -EROFS; | |
1410 | } | |
1411 | ||
1412 | return log_error_errno(errno, "Failed to re-open file %s: %m", path); | |
1413 | } | |
1414 | ||
1415 | erofs = true; | |
1416 | } | |
1417 | ||
1418 | if (fstat(fd, &stbuf) < 0) | |
4a62c710 | 1419 | return log_error_errno(errno, "stat(%s) failed: %m", path); |
d4e9eb91 | 1420 | |
5ec9d065 FB |
1421 | if (!S_ISREG(stbuf.st_mode)) { |
1422 | log_error("%s exists and is not a regular file.", path); | |
d4e9eb91 DR |
1423 | return -EEXIST; |
1424 | } | |
1425 | ||
5ec9d065 FB |
1426 | if (stbuf.st_size > 0) { |
1427 | if (ftruncate(fd, 0) < 0) { | |
1428 | r = erofs ? -EROFS : -errno; | |
1429 | return log_error_errno(r, "Failed to truncate file %s: %m", path); | |
1430 | } | |
1431 | } else | |
1432 | st = &stbuf; | |
d4e9eb91 | 1433 | |
5ec9d065 FB |
1434 | log_debug("\"%s\" has been created.", path); |
1435 | ||
1436 | if (i->argument) { | |
1437 | log_debug("Writing to \"%s\".", path); | |
1438 | ||
1439 | r = loop_write(fd, i->argument, strlen(i->argument), false); | |
1440 | if (r < 0) { | |
1441 | r = erofs ? -EROFS : r; | |
1442 | return log_error_errno(r, "Failed to write file %s: %m", path); | |
1443 | } | |
1444 | } | |
1445 | ||
9d874aec | 1446 | return fd_set_perms(i, fd, path, st); |
d4e9eb91 DR |
1447 | } |
1448 | ||
b1f7b17f | 1449 | static int copy_files(Item *i) { |
16ba55ad FB |
1450 | _cleanup_close_ int dfd = -1, fd = -1; |
1451 | char *bn; | |
b1f7b17f FB |
1452 | int r; |
1453 | ||
1454 | log_debug("Copying tree \"%s\" to \"%s\".", i->argument, i->path); | |
1455 | ||
16ba55ad | 1456 | bn = basename(i->path); |
b1f7b17f | 1457 | |
16ba55ad FB |
1458 | /* Validate the path and use the returned directory fd for copying the |
1459 | * target so we're sure that the path can't be changed behind our | |
1460 | * back. */ | |
1461 | dfd = path_open_parent_safe(i->path); | |
1462 | if (dfd < 0) | |
1463 | return dfd; | |
b1f7b17f | 1464 | |
16ba55ad FB |
1465 | r = copy_tree_at(AT_FDCWD, i->argument, |
1466 | dfd, bn, | |
1467 | i->uid_set ? i->uid : UID_INVALID, | |
1468 | i->gid_set ? i->gid : GID_INVALID, | |
1469 | COPY_REFLINK); | |
b1f7b17f FB |
1470 | if (r < 0) { |
1471 | struct stat a, b; | |
1472 | ||
16ba55ad FB |
1473 | /* If the target already exists on read-only filesystems, trying |
1474 | * to create the target will not fail with EEXIST but with | |
1475 | * EROFS. */ | |
1476 | if (r == -EROFS && faccessat(dfd, bn, F_OK, AT_SYMLINK_NOFOLLOW) == 0) | |
1477 | r = -EEXIST; | |
1478 | ||
b1f7b17f FB |
1479 | if (r != -EEXIST) |
1480 | return log_error_errno(r, "Failed to copy files to %s: %m", i->path); | |
1481 | ||
1482 | if (stat(i->argument, &a) < 0) | |
1483 | return log_error_errno(errno, "stat(%s) failed: %m", i->argument); | |
1484 | ||
16ba55ad | 1485 | if (fstatat(dfd, bn, &b, AT_SYMLINK_NOFOLLOW) < 0) |
b1f7b17f FB |
1486 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); |
1487 | ||
1488 | if ((a.st_mode ^ b.st_mode) & S_IFMT) { | |
1489 | log_debug("Can't copy to %s, file exists already and is of different type", i->path); | |
1490 | return 0; | |
1491 | } | |
1492 | } | |
1493 | ||
16ba55ad FB |
1494 | fd = openat(dfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1495 | if (fd < 0) | |
1496 | return log_error_errno(errno, "Failed to openat(%s): %m", i->path); | |
1497 | ||
9d874aec | 1498 | return fd_set_perms(i, fd, i->path, NULL); |
b1f7b17f FB |
1499 | } |
1500 | ||
074bd73f FB |
1501 | typedef enum { |
1502 | CREATION_NORMAL, | |
1503 | CREATION_EXISTING, | |
1504 | CREATION_FORCE, | |
1505 | _CREATION_MODE_MAX, | |
1506 | _CREATION_MODE_INVALID = -1 | |
1507 | } CreationMode; | |
1508 | ||
1509 | static const char *creation_mode_verb_table[_CREATION_MODE_MAX] = { | |
1510 | [CREATION_NORMAL] = "Created", | |
1511 | [CREATION_EXISTING] = "Found existing", | |
1512 | [CREATION_FORCE] = "Created replacement", | |
1513 | }; | |
1514 | ||
1515 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb, CreationMode); | |
1516 | ||
f17a8d61 | 1517 | static int create_directory_or_subvolume(const char *path, mode_t mode, bool subvol, CreationMode *creation) { |
4c39d899 | 1518 | _cleanup_close_ int pfd = -1; |
f17a8d61 | 1519 | CreationMode c; |
4c39d899 | 1520 | int r; |
4ad36844 | 1521 | |
4c39d899 | 1522 | assert(path); |
4ad36844 | 1523 | |
f17a8d61 FB |
1524 | if (!creation) |
1525 | creation = &c; | |
1526 | ||
4c39d899 FB |
1527 | pfd = path_open_parent_safe(path); |
1528 | if (pfd < 0) | |
1529 | return pfd; | |
4ad36844 | 1530 | |
4c39d899 | 1531 | if (subvol) { |
4ad36844 FB |
1532 | if (btrfs_is_subvol(empty_to_root(arg_root)) <= 0) |
1533 | ||
1534 | /* Don't create a subvolume unless the root directory is | |
1535 | * one, too. We do this under the assumption that if the | |
1536 | * root directory is just a plain directory (i.e. very | |
1537 | * light-weight), we shouldn't try to split it up into | |
1538 | * subvolumes (i.e. more heavy-weight). Thus, chroot() | |
1539 | * environments and suchlike will get a full brtfs | |
1540 | * subvolume set up below their tree only if they | |
1541 | * specifically set up a btrfs subvolume for the root | |
1542 | * dir too. */ | |
1543 | ||
4c39d899 | 1544 | subvol = false; |
4ad36844 | 1545 | else { |
4c39d899 FB |
1546 | RUN_WITH_UMASK((~mode) & 0777) |
1547 | r = btrfs_subvol_make_fd(pfd, basename(path)); | |
4ad36844 FB |
1548 | } |
1549 | } else | |
1550 | r = 0; | |
1551 | ||
4c39d899 | 1552 | if (!subvol || r == -ENOTTY) |
4ad36844 | 1553 | RUN_WITH_UMASK(0000) |
4c39d899 | 1554 | r = mkdirat_label(pfd, basename(path), mode); |
4ad36844 FB |
1555 | |
1556 | if (r < 0) { | |
1557 | int k; | |
1558 | ||
1559 | if (!IN_SET(r, -EEXIST, -EROFS)) | |
4c39d899 | 1560 | return log_error_errno(r, "Failed to create directory or subvolume \"%s\": %m", path); |
4ad36844 | 1561 | |
4c39d899 | 1562 | k = is_dir_fd(pfd); |
4ad36844 | 1563 | if (k == -ENOENT && r == -EROFS) |
4c39d899 | 1564 | return log_error_errno(r, "%s does not exist and cannot be created as the file system is read-only.", path); |
4ad36844 | 1565 | if (k < 0) |
4c39d899 | 1566 | return log_error_errno(k, "Failed to check if %s exists: %m", path); |
4ad36844 | 1567 | if (!k) { |
4c39d899 FB |
1568 | log_warning("\"%s\" already exists and is not a directory.", path); |
1569 | return -EEXIST; | |
4ad36844 FB |
1570 | } |
1571 | ||
f17a8d61 | 1572 | *creation = CREATION_EXISTING; |
4ad36844 | 1573 | } else |
f17a8d61 | 1574 | *creation = CREATION_NORMAL; |
4ad36844 | 1575 | |
f17a8d61 | 1576 | log_debug("%s directory \"%s\".", creation_mode_verb_to_string(*creation), path); |
4c39d899 FB |
1577 | |
1578 | r = openat(pfd, basename(path), O_NOCTTY|O_CLOEXEC|O_DIRECTORY); | |
1579 | if (r < 0) | |
09f12798 LP |
1580 | return log_error_errno(errno, "Failed to open directory '%s': %m", basename(path)); |
1581 | ||
4c39d899 FB |
1582 | return r; |
1583 | } | |
1584 | ||
1585 | static int create_directory(Item *i, const char *path) { | |
1586 | _cleanup_close_ int fd = -1; | |
1587 | ||
1588 | assert(i); | |
1589 | assert(IN_SET(i->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY)); | |
1590 | ||
f17a8d61 | 1591 | fd = create_directory_or_subvolume(path, i->mode, false, NULL); |
4c39d899 FB |
1592 | if (fd == -EEXIST) |
1593 | return 0; | |
1594 | if (fd < 0) | |
1595 | return fd; | |
1596 | ||
9d874aec | 1597 | return fd_set_perms(i, fd, path, NULL); |
4c39d899 FB |
1598 | } |
1599 | ||
1600 | static int create_subvolume(Item *i, const char *path) { | |
1601 | _cleanup_close_ int fd = -1; | |
f17a8d61 | 1602 | CreationMode creation; |
4c39d899 FB |
1603 | int r, q = 0; |
1604 | ||
1605 | assert(i); | |
1606 | assert(IN_SET(i->type, CREATE_SUBVOLUME, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)); | |
1607 | ||
f17a8d61 | 1608 | fd = create_directory_or_subvolume(path, i->mode, true, &creation); |
4c39d899 FB |
1609 | if (fd == -EEXIST) |
1610 | return 0; | |
1611 | if (fd < 0) | |
1612 | return fd; | |
4ad36844 | 1613 | |
f17a8d61 FB |
1614 | if (creation == CREATION_NORMAL && |
1615 | IN_SET(i->type, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)) { | |
4c39d899 | 1616 | r = btrfs_subvol_auto_qgroup_fd(fd, 0, i->type == CREATE_SUBVOLUME_NEW_QUOTA); |
4ad36844 FB |
1617 | if (r == -ENOTTY) |
1618 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (unsupported fs or dir not a subvolume): %m", i->path); | |
1619 | else if (r == -EROFS) | |
1620 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (fs is read-only).", i->path); | |
1621 | else if (r == -ENOPROTOOPT) | |
1622 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (quota support is disabled).", i->path); | |
1623 | else if (r < 0) | |
1624 | q = log_error_errno(r, "Failed to adjust quota for subvolume \"%s\": %m", i->path); | |
1625 | else if (r > 0) | |
1626 | log_debug("Adjusted quota for subvolume \"%s\".", i->path); | |
1627 | else if (r == 0) | |
1628 | log_debug("Quota for subvolume \"%s\" already in place, no change made.", i->path); | |
1629 | } | |
1630 | ||
9d874aec LP |
1631 | r = fd_set_perms(i, fd, path, NULL); |
1632 | if (q < 0) /* prefer the quota change error from above */ | |
4ad36844 FB |
1633 | return q; |
1634 | ||
1635 | return r; | |
1636 | } | |
1637 | ||
54946021 FB |
1638 | static int empty_directory(Item *i, const char *path) { |
1639 | int r; | |
1640 | ||
1641 | assert(i); | |
1642 | assert(i->type == EMPTY_DIRECTORY); | |
1643 | ||
1644 | r = is_dir(path, false); | |
1645 | if (r == -ENOENT) { | |
1646 | /* Option "e" operates only on existing objects. Do not | |
1647 | * print errors about non-existent files or directories */ | |
1648 | log_debug("Skipping missing directory: %s", path); | |
1649 | return 0; | |
1650 | } | |
1651 | if (r < 0) | |
1652 | return log_error_errno(r, "is_dir() failed on path %s: %m", path); | |
1653 | if (r == 0) { | |
1654 | log_error("'%s' already exists and is not a directory.", path); | |
1655 | return -EEXIST; | |
1656 | } | |
1657 | ||
1658 | return path_set_perms(i, path); | |
1659 | } | |
1660 | ||
074bd73f | 1661 | static int create_device(Item *i, mode_t file_type) { |
c7700a77 | 1662 | _cleanup_close_ int dfd = -1, fd = -1; |
074bd73f | 1663 | CreationMode creation; |
c7700a77 | 1664 | char *bn; |
074bd73f FB |
1665 | int r; |
1666 | ||
1667 | assert(i); | |
1668 | assert(IN_SET(file_type, S_IFBLK, S_IFCHR)); | |
1669 | ||
c7700a77 FB |
1670 | bn = basename(i->path); |
1671 | ||
1672 | /* Validate the path and use the returned directory fd for copying the | |
1673 | * target so we're sure that the path can't be changed behind our | |
1674 | * back. */ | |
1675 | dfd = path_open_parent_safe(i->path); | |
1676 | if (dfd < 0) | |
1677 | return dfd; | |
1678 | ||
074bd73f FB |
1679 | RUN_WITH_UMASK(0000) { |
1680 | mac_selinux_create_file_prepare(i->path, file_type); | |
c7700a77 | 1681 | r = mknodat(dfd, bn, i->mode | file_type, i->major_minor); |
074bd73f FB |
1682 | mac_selinux_create_file_clear(); |
1683 | } | |
1684 | ||
1685 | if (r < 0) { | |
c7700a77 FB |
1686 | struct stat st; |
1687 | ||
074bd73f FB |
1688 | if (errno == EPERM) { |
1689 | log_debug("We lack permissions, possibly because of cgroup configuration; " | |
1690 | "skipping creation of device node %s.", i->path); | |
1691 | return 0; | |
1692 | } | |
1693 | ||
1694 | if (errno != EEXIST) | |
1695 | return log_error_errno(errno, "Failed to create device node %s: %m", i->path); | |
1696 | ||
c7700a77 | 1697 | if (fstatat(dfd, bn, &st, 0) < 0) |
074bd73f FB |
1698 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); |
1699 | ||
1700 | if ((st.st_mode & S_IFMT) != file_type) { | |
1701 | ||
1702 | if (i->force) { | |
1703 | ||
1704 | RUN_WITH_UMASK(0000) { | |
1705 | mac_selinux_create_file_prepare(i->path, file_type); | |
c7700a77 | 1706 | /* FIXME: need to introduce mknodat_atomic() */ |
074bd73f FB |
1707 | r = mknod_atomic(i->path, i->mode | file_type, i->major_minor); |
1708 | mac_selinux_create_file_clear(); | |
1709 | } | |
1710 | ||
1711 | if (r < 0) | |
1712 | return log_error_errno(r, "Failed to create device node \"%s\": %m", i->path); | |
1713 | creation = CREATION_FORCE; | |
1714 | } else { | |
1715 | log_debug("%s is not a device node.", i->path); | |
1716 | return 0; | |
1717 | } | |
1718 | } else | |
1719 | creation = CREATION_EXISTING; | |
1720 | } else | |
1721 | creation = CREATION_NORMAL; | |
1722 | ||
1723 | log_debug("%s %s device node \"%s\" %u:%u.", | |
1724 | creation_mode_verb_to_string(creation), | |
1725 | i->type == CREATE_BLOCK_DEVICE ? "block" : "char", | |
1726 | i->path, major(i->mode), minor(i->mode)); | |
1727 | ||
c7700a77 FB |
1728 | fd = openat(dfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1729 | if (fd < 0) | |
1730 | return log_error_errno(errno, "Failed to openat(%s): %m", i->path); | |
1731 | ||
9d874aec | 1732 | return fd_set_perms(i, fd, i->path, NULL); |
074bd73f FB |
1733 | } |
1734 | ||
a2fc2f8d | 1735 | static int create_fifo(Item *i, const char *path) { |
7ea5a87f | 1736 | _cleanup_close_ int pfd = -1, fd = -1; |
a2fc2f8d FB |
1737 | CreationMode creation; |
1738 | struct stat st; | |
7ea5a87f | 1739 | char *bn; |
a2fc2f8d FB |
1740 | int r; |
1741 | ||
7ea5a87f FB |
1742 | pfd = path_open_parent_safe(path); |
1743 | if (pfd < 0) | |
1744 | return pfd; | |
1745 | ||
1746 | bn = basename(path); | |
1747 | ||
a2fc2f8d FB |
1748 | RUN_WITH_UMASK(0000) { |
1749 | mac_selinux_create_file_prepare(path, S_IFIFO); | |
7ea5a87f | 1750 | r = mkfifoat(pfd, bn, i->mode); |
a2fc2f8d FB |
1751 | mac_selinux_create_file_clear(); |
1752 | } | |
1753 | ||
1754 | if (r < 0) { | |
1755 | if (errno != EEXIST) | |
1756 | return log_error_errno(errno, "Failed to create fifo %s: %m", path); | |
1757 | ||
7ea5a87f | 1758 | if (fstatat(pfd, bn, &st, AT_SYMLINK_NOFOLLOW) < 0) |
a2fc2f8d FB |
1759 | return log_error_errno(errno, "stat(%s) failed: %m", path); |
1760 | ||
1761 | if (!S_ISFIFO(st.st_mode)) { | |
1762 | ||
1763 | if (i->force) { | |
1764 | RUN_WITH_UMASK(0000) { | |
1765 | mac_selinux_create_file_prepare(path, S_IFIFO); | |
7ea5a87f | 1766 | r = mkfifoat_atomic(pfd, bn, i->mode); |
a2fc2f8d FB |
1767 | mac_selinux_create_file_clear(); |
1768 | } | |
1769 | ||
1770 | if (r < 0) | |
1771 | return log_error_errno(r, "Failed to create fifo %s: %m", path); | |
1772 | creation = CREATION_FORCE; | |
1773 | } else { | |
1774 | log_warning("\"%s\" already exists and is not a fifo.", path); | |
1775 | return 0; | |
1776 | } | |
1777 | } else | |
1778 | creation = CREATION_EXISTING; | |
1779 | } else | |
1780 | creation = CREATION_NORMAL; | |
7ea5a87f | 1781 | |
a2fc2f8d FB |
1782 | log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation), path); |
1783 | ||
7ea5a87f FB |
1784 | fd = openat(pfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1785 | if (fd < 0) | |
a5df05ff | 1786 | return log_error_errno(errno, "Failed to openat(%s): %m", path); |
7ea5a87f | 1787 | |
9d874aec | 1788 | return fd_set_perms(i, fd, i->path, NULL); |
a2fc2f8d FB |
1789 | } |
1790 | ||
9d874aec LP |
1791 | typedef int (*action_t)(Item *i, const char *path); |
1792 | typedef int (*fdaction_t)(Item *i, int fd, const char *path, const struct stat *st); | |
081043cf | 1793 | |
9d874aec | 1794 | static int item_do(Item *i, int fd, const char *path, fdaction_t action) { |
14f3480a | 1795 | struct stat st; |
936f6bdb | 1796 | int r = 0, q; |
e73a03e0 LP |
1797 | |
1798 | assert(i); | |
4dc7bfdf | 1799 | assert(path); |
936f6bdb | 1800 | assert(fd >= 0); |
14f3480a FB |
1801 | |
1802 | if (fstat(fd, &st) < 0) { | |
09f12798 | 1803 | r = log_error_errno(errno, "fstat() on file failed: %m"); |
14f3480a FB |
1804 | goto finish; |
1805 | } | |
a8d88783 MS |
1806 | |
1807 | /* This returns the first error we run into, but nevertheless | |
1808 | * tries to go on */ | |
9d874aec | 1809 | r = action(i, fd, path, &st); |
a8d88783 | 1810 | |
14f3480a | 1811 | if (S_ISDIR(st.st_mode)) { |
22dd8d35 | 1812 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
936f6bdb FB |
1813 | _cleanup_closedir_ DIR *d = NULL; |
1814 | struct dirent *de; | |
a8d88783 | 1815 | |
936f6bdb FB |
1816 | /* The passed 'fd' was opened with O_PATH. We need to convert |
1817 | * it into a 'regular' fd before reading the directory content. */ | |
1818 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); | |
a8d88783 | 1819 | |
936f6bdb FB |
1820 | d = opendir(procfs_path); |
1821 | if (!d) { | |
09f12798 LP |
1822 | log_error_errno(errno, "Failed to opendir() '%s': %m", procfs_path); |
1823 | if (r == 0) | |
1824 | r = -errno; | |
936f6bdb FB |
1825 | goto finish; |
1826 | } | |
a8d88783 | 1827 | |
936f6bdb | 1828 | FOREACH_DIRENT_ALL(de, d, q = -errno; goto finish) { |
936f6bdb | 1829 | int de_fd; |
a8d88783 | 1830 | |
936f6bdb FB |
1831 | if (dot_or_dot_dot(de->d_name)) |
1832 | continue; | |
1833 | ||
1834 | de_fd = openat(fd, de->d_name, O_NOFOLLOW|O_CLOEXEC|O_PATH); | |
9d874aec LP |
1835 | if (de_fd < 0) |
1836 | q = log_error_errno(errno, "Failed to open() file '%s': %m", de->d_name); | |
4dc7bfdf FB |
1837 | else { |
1838 | _cleanup_free_ char *de_path = NULL; | |
1839 | ||
1840 | de_path = path_join(NULL, path, de->d_name); | |
1841 | if (!de_path) | |
1842 | q = log_oom(); | |
1843 | else | |
1844 | /* Pass ownership of dirent fd over */ | |
1845 | q = item_do(i, de_fd, de_path, action); | |
1846 | } | |
a8d88783 | 1847 | |
e73a03e0 LP |
1848 | if (q < 0 && r == 0) |
1849 | r = q; | |
a8d88783 | 1850 | } |
a8d88783 | 1851 | } |
936f6bdb FB |
1852 | finish: |
1853 | safe_close(fd); | |
e73a03e0 | 1854 | return r; |
a8d88783 MS |
1855 | } |
1856 | ||
936f6bdb | 1857 | static int glob_item(Item *i, action_t action) { |
df99a9ef | 1858 | _cleanup_globfree_ glob_t g = { |
ebf31a1f | 1859 | .gl_opendir = (void *(*)(const char *)) opendir_nomod, |
df99a9ef | 1860 | }; |
e73a03e0 | 1861 | int r = 0, k; |
99e68c0b MS |
1862 | char **fn; |
1863 | ||
84e72b5e ZJS |
1864 | k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g); |
1865 | if (k < 0 && k != -ENOENT) | |
1866 | return log_error_errno(k, "glob(%s) failed: %m", i->path); | |
99e68c0b | 1867 | |
c84a9488 ZJS |
1868 | STRV_FOREACH(fn, g.gl_pathv) { |
1869 | k = action(i, *fn); | |
e73a03e0 | 1870 | if (k < 0 && r == 0) |
99e68c0b | 1871 | r = k; |
936f6bdb FB |
1872 | } |
1873 | ||
1874 | return r; | |
1875 | } | |
081043cf | 1876 | |
936f6bdb FB |
1877 | static int glob_item_recursively(Item *i, fdaction_t action) { |
1878 | _cleanup_globfree_ glob_t g = { | |
1879 | .gl_opendir = (void *(*)(const char *)) opendir_nomod, | |
1880 | }; | |
1881 | int r = 0, k; | |
1882 | char **fn; | |
1883 | ||
1884 | k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g); | |
1885 | if (k < 0 && k != -ENOENT) | |
1886 | return log_error_errno(k, "glob(%s) failed: %m", i->path); | |
1887 | ||
1888 | STRV_FOREACH(fn, g.gl_pathv) { | |
1889 | _cleanup_close_ int fd = -1; | |
936f6bdb FB |
1890 | |
1891 | /* Make sure we won't trigger/follow file object (such as | |
1892 | * device nodes, automounts, ...) pointed out by 'fn' with | |
1893 | * O_PATH. Note, when O_PATH is used, flags other than | |
1894 | * O_CLOEXEC, O_DIRECTORY, and O_NOFOLLOW are ignored. */ | |
1895 | ||
1896 | fd = open(*fn, O_CLOEXEC|O_NOFOLLOW|O_PATH); | |
1897 | if (fd < 0) { | |
09f12798 LP |
1898 | log_error_errno(errno, "Opening '%s' failed: %m", *fn); |
1899 | if (r == 0) | |
1900 | r = -errno; | |
936f6bdb FB |
1901 | continue; |
1902 | } | |
1903 | ||
9d874aec | 1904 | k = item_do(i, fd, *fn, action); |
936f6bdb FB |
1905 | if (k < 0 && r == 0) |
1906 | r = k; | |
1907 | ||
1908 | /* we passed fd ownership to the previous call */ | |
1909 | fd = -1; | |
c84a9488 | 1910 | } |
99e68c0b | 1911 | |
99e68c0b MS |
1912 | return r; |
1913 | } | |
1914 | ||
3b63d2d3 | 1915 | static int create_item(Item *i) { |
294929f8 | 1916 | CreationMode creation; |
a2fc2f8d | 1917 | int r = 0; |
5008d581 | 1918 | |
3b63d2d3 | 1919 | assert(i); |
5008d581 | 1920 | |
582deb84 ZJS |
1921 | log_debug("Running create action for entry %c %s", (char) i->type, i->path); |
1922 | ||
3b63d2d3 LP |
1923 | switch (i->type) { |
1924 | ||
1925 | case IGNORE_PATH: | |
78a92a5a | 1926 | case IGNORE_DIRECTORY_PATH: |
3b63d2d3 LP |
1927 | case REMOVE_PATH: |
1928 | case RECURSIVE_REMOVE_PATH: | |
1929 | return 0; | |
5008d581 | 1930 | |
3b63d2d3 | 1931 | case CREATE_FILE: |
7fa10748 LP |
1932 | RUN_WITH_UMASK(0000) |
1933 | (void) mkdir_parents_label(i->path, 0755); | |
1934 | ||
31c84ff1 | 1935 | r = create_file(i, i->path); |
1845fdd9 DR |
1936 | if (r < 0) |
1937 | return r; | |
1938 | break; | |
265ffa1e | 1939 | |
5ec9d065 FB |
1940 | case TRUNCATE_FILE: |
1941 | RUN_WITH_UMASK(0000) | |
1942 | (void) mkdir_parents_label(i->path, 0755); | |
1943 | ||
1944 | r = truncate_file(i, i->path); | |
1945 | if (r < 0) | |
1946 | return r; | |
1947 | break; | |
1948 | ||
7b887f22 | 1949 | case COPY_FILES: |
7fa10748 LP |
1950 | RUN_WITH_UMASK(0000) |
1951 | (void) mkdir_parents_label(i->path, 0755); | |
1952 | ||
b1f7b17f | 1953 | r = copy_files(i); |
849958d1 LP |
1954 | if (r < 0) |
1955 | return r; | |
849958d1 LP |
1956 | break; |
1957 | ||
d4e9eb91 | 1958 | case WRITE_FILE: |
936f6bdb | 1959 | r = glob_item(i, write_one_file); |
f05bc3f7 MS |
1960 | if (r < 0) |
1961 | return r; | |
5008d581 | 1962 | |
3b63d2d3 LP |
1963 | break; |
1964 | ||
3b63d2d3 | 1965 | case CREATE_DIRECTORY: |
d7b8eec7 | 1966 | case TRUNCATE_DIRECTORY: |
4c39d899 FB |
1967 | RUN_WITH_UMASK(0000) |
1968 | (void) mkdir_parents_label(i->path, 0755); | |
1969 | ||
1970 | r = create_directory(i, i->path); | |
1971 | if (r < 0) | |
1972 | return r; | |
1973 | break; | |
1974 | ||
d7b8eec7 | 1975 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
1976 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
1977 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
d7b8eec7 | 1978 | RUN_WITH_UMASK(0000) |
7fa10748 | 1979 | (void) mkdir_parents_label(i->path, 0755); |
d7b8eec7 | 1980 | |
4c39d899 | 1981 | r = create_subvolume(i, i->path); |
4ad36844 FB |
1982 | if (r < 0) |
1983 | return r; | |
1984 | break; | |
5fb13eb5 | 1985 | |
df8dee85 | 1986 | case EMPTY_DIRECTORY: |
54946021 | 1987 | r = glob_item(i, empty_directory); |
f05bc3f7 MS |
1988 | if (r < 0) |
1989 | return r; | |
3b63d2d3 | 1990 | break; |
ee17ee7c LP |
1991 | |
1992 | case CREATE_FIFO: | |
a2fc2f8d | 1993 | RUN_WITH_UMASK(0000) |
7fa10748 LP |
1994 | (void) mkdir_parents_label(i->path, 0755); |
1995 | ||
a2fc2f8d | 1996 | r = create_fifo(i, i->path); |
f05bc3f7 MS |
1997 | if (r < 0) |
1998 | return r; | |
ee17ee7c | 1999 | break; |
a8d88783 | 2000 | |
5c5ccf12 | 2001 | case CREATE_SYMLINK: { |
7fa10748 LP |
2002 | RUN_WITH_UMASK(0000) |
2003 | (void) mkdir_parents_label(i->path, 0755); | |
2004 | ||
ecabcf8b | 2005 | mac_selinux_create_file_prepare(i->path, S_IFLNK); |
4cef1923 | 2006 | r = symlink(i->argument, i->path); |
ecabcf8b | 2007 | mac_selinux_create_file_clear(); |
e9a5ef7c | 2008 | |
468d726b | 2009 | if (r < 0) { |
2e78fa79 | 2010 | _cleanup_free_ char *x = NULL; |
468d726b | 2011 | |
4a62c710 | 2012 | if (errno != EEXIST) |
4cef1923 | 2013 | return log_error_errno(errno, "symlink(%s, %s) failed: %m", i->argument, i->path); |
2e78fa79 LP |
2014 | |
2015 | r = readlink_malloc(i->path, &x); | |
4cef1923 | 2016 | if (r < 0 || !streq(i->argument, x)) { |
2e78fa79 LP |
2017 | |
2018 | if (i->force) { | |
ecabcf8b | 2019 | mac_selinux_create_file_prepare(i->path, S_IFLNK); |
4cef1923 | 2020 | r = symlink_atomic(i->argument, i->path); |
ecabcf8b | 2021 | mac_selinux_create_file_clear(); |
2e78fa79 | 2022 | |
2ef5de1b | 2023 | if (IN_SET(r, -EISDIR, -EEXIST, -ENOTEMPTY)) { |
b3f5897f WD |
2024 | r = rm_rf(i->path, REMOVE_ROOT|REMOVE_PHYSICAL); |
2025 | if (r < 0) | |
2026 | return log_error_errno(r, "rm -fr %s failed: %m", i->path); | |
2027 | ||
2028 | mac_selinux_create_file_prepare(i->path, S_IFLNK); | |
4cef1923 | 2029 | r = symlink(i->argument, i->path) < 0 ? -errno : 0; |
b3f5897f WD |
2030 | mac_selinux_create_file_clear(); |
2031 | } | |
f647962d | 2032 | if (r < 0) |
4cef1923 | 2033 | return log_error_errno(r, "symlink(%s, %s) failed: %m", i->argument, i->path); |
a542c4dc | 2034 | |
294929f8 | 2035 | creation = CREATION_FORCE; |
1554afae | 2036 | } else { |
582deb84 | 2037 | log_debug("\"%s\" is not a symlink or does not point to the correct path.", i->path); |
1554afae LP |
2038 | return 0; |
2039 | } | |
294929f8 ZJS |
2040 | } else |
2041 | creation = CREATION_EXISTING; | |
2042 | } else | |
a542c4dc | 2043 | |
294929f8 | 2044 | creation = CREATION_NORMAL; |
7a7d5db7 | 2045 | log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation), i->path); |
468d726b | 2046 | break; |
5c5ccf12 | 2047 | } |
468d726b LP |
2048 | |
2049 | case CREATE_BLOCK_DEVICE: | |
074bd73f | 2050 | case CREATE_CHAR_DEVICE: |
cb7ed9df | 2051 | if (have_effective_cap(CAP_MKNOD) == 0) { |
713998cf LP |
2052 | /* In a container we lack CAP_MKNOD. We shouldn't attempt to create the device node in that |
2053 | * case to avoid noise, and we don't support virtualized devices in containers anyway. */ | |
cb7ed9df LP |
2054 | |
2055 | log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path); | |
2056 | return 0; | |
2057 | } | |
2058 | ||
7fa10748 LP |
2059 | RUN_WITH_UMASK(0000) |
2060 | (void) mkdir_parents_label(i->path, 0755); | |
2061 | ||
074bd73f | 2062 | r = create_device(i, i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR); |
468d726b LP |
2063 | if (r < 0) |
2064 | return r; | |
2065 | ||
2066 | break; | |
468d726b | 2067 | |
e73a03e0 | 2068 | case ADJUST_MODE: |
777b87e7 | 2069 | case RELABEL_PATH: |
936f6bdb | 2070 | r = glob_item(i, path_set_perms); |
777b87e7 | 2071 | if (r < 0) |
96ca8194 | 2072 | return r; |
777b87e7 MS |
2073 | break; |
2074 | ||
a8d88783 | 2075 | case RECURSIVE_RELABEL_PATH: |
936f6bdb | 2076 | r = glob_item_recursively(i, fd_set_perms); |
a8d88783 MS |
2077 | if (r < 0) |
2078 | return r; | |
ebf4e801 | 2079 | break; |
e73a03e0 | 2080 | |
ebf4e801 | 2081 | case SET_XATTR: |
936f6bdb | 2082 | r = glob_item(i, path_set_xattrs); |
b705ab6a ZJS |
2083 | if (r < 0) |
2084 | return r; | |
2085 | break; | |
2086 | ||
2087 | case RECURSIVE_SET_XATTR: | |
936f6bdb | 2088 | r = glob_item_recursively(i, fd_set_xattrs); |
ebf4e801 MW |
2089 | if (r < 0) |
2090 | return r; | |
e73a03e0 | 2091 | break; |
f8eeeaf9 ZJS |
2092 | |
2093 | case SET_ACL: | |
936f6bdb | 2094 | r = glob_item(i, path_set_acls); |
f8eeeaf9 ZJS |
2095 | if (r < 0) |
2096 | return r; | |
b705ab6a ZJS |
2097 | break; |
2098 | ||
2099 | case RECURSIVE_SET_ACL: | |
936f6bdb | 2100 | r = glob_item_recursively(i, fd_set_acls); |
b705ab6a ZJS |
2101 | if (r < 0) |
2102 | return r; | |
2103 | break; | |
22c3a6ca | 2104 | |
88ec4dfa | 2105 | case SET_ATTRIBUTE: |
936f6bdb | 2106 | r = glob_item(i, path_set_attribute); |
22c3a6ca GB |
2107 | if (r < 0) |
2108 | return r; | |
2109 | break; | |
2110 | ||
88ec4dfa | 2111 | case RECURSIVE_SET_ATTRIBUTE: |
936f6bdb | 2112 | r = glob_item_recursively(i, fd_set_attribute); |
22c3a6ca GB |
2113 | if (r < 0) |
2114 | return r; | |
2115 | break; | |
3b63d2d3 LP |
2116 | } |
2117 | ||
f05bc3f7 | 2118 | return 0; |
3b63d2d3 LP |
2119 | } |
2120 | ||
a0896123 | 2121 | static int remove_item_instance(Item *i, const char *instance) { |
3b63d2d3 LP |
2122 | int r; |
2123 | ||
2124 | assert(i); | |
2125 | ||
2126 | switch (i->type) { | |
2127 | ||
3b63d2d3 | 2128 | case REMOVE_PATH: |
4a62c710 | 2129 | if (remove(instance) < 0 && errno != ENOENT) |
3f93da98 | 2130 | return log_error_errno(errno, "rm(%s): %m", instance); |
3b63d2d3 LP |
2131 | |
2132 | break; | |
2133 | ||
2134 | case TRUNCATE_DIRECTORY: | |
2135 | case RECURSIVE_REMOVE_PATH: | |
d139b24a LP |
2136 | /* FIXME: we probably should use dir_cleanup() here |
2137 | * instead of rm_rf() so that 'x' is honoured. */ | |
582deb84 | 2138 | log_debug("rm -rf \"%s\"", instance); |
1b26f09e | 2139 | r = rm_rf(instance, (i->type == RECURSIVE_REMOVE_PATH ? REMOVE_ROOT|REMOVE_SUBVOLUME : 0) | REMOVE_PHYSICAL); |
f647962d MS |
2140 | if (r < 0 && r != -ENOENT) |
2141 | return log_error_errno(r, "rm_rf(%s): %m", instance); | |
3b63d2d3 LP |
2142 | |
2143 | break; | |
7fcb4b9b ZJS |
2144 | |
2145 | default: | |
2146 | assert_not_reached("wut?"); | |
3b63d2d3 LP |
2147 | } |
2148 | ||
2149 | return 0; | |
2150 | } | |
2151 | ||
a0896123 | 2152 | static int remove_item(Item *i) { |
b8bb3e8f LP |
2153 | assert(i); |
2154 | ||
582deb84 ZJS |
2155 | log_debug("Running remove action for entry %c %s", (char) i->type, i->path); |
2156 | ||
b8bb3e8f LP |
2157 | switch (i->type) { |
2158 | ||
b8bb3e8f LP |
2159 | case REMOVE_PATH: |
2160 | case TRUNCATE_DIRECTORY: | |
99e68c0b | 2161 | case RECURSIVE_REMOVE_PATH: |
936f6bdb | 2162 | return glob_item(i, remove_item_instance); |
b8bb3e8f | 2163 | |
df8dee85 ZJS |
2164 | default: |
2165 | return 0; | |
2166 | } | |
b8bb3e8f LP |
2167 | } |
2168 | ||
78a92a5a | 2169 | static int clean_item_instance(Item *i, const char* instance) { |
7fd1b19b | 2170 | _cleanup_closedir_ DIR *d = NULL; |
78a92a5a MS |
2171 | struct stat s, ps; |
2172 | bool mountpoint; | |
78a92a5a | 2173 | usec_t cutoff, n; |
582deb84 | 2174 | char timestamp[FORMAT_TIMESTAMP_MAX]; |
78a92a5a MS |
2175 | |
2176 | assert(i); | |
2177 | ||
2178 | if (!i->age_set) | |
2179 | return 0; | |
2180 | ||
2181 | n = now(CLOCK_REALTIME); | |
2182 | if (n < i->age) | |
2183 | return 0; | |
2184 | ||
2185 | cutoff = n - i->age; | |
2186 | ||
df99a9ef | 2187 | d = opendir_nomod(instance); |
78a92a5a | 2188 | if (!d) { |
d710aaf7 | 2189 | if (IN_SET(errno, ENOENT, ENOTDIR)) { |
582deb84 | 2190 | log_debug_errno(errno, "Directory \"%s\": %m", instance); |
78a92a5a | 2191 | return 0; |
582deb84 | 2192 | } |
78a92a5a | 2193 | |
d710aaf7 | 2194 | return log_error_errno(errno, "Failed to open directory %s: %m", instance); |
78a92a5a MS |
2195 | } |
2196 | ||
4a62c710 MS |
2197 | if (fstat(dirfd(d), &s) < 0) |
2198 | return log_error_errno(errno, "stat(%s) failed: %m", i->path); | |
78a92a5a MS |
2199 | |
2200 | if (!S_ISDIR(s.st_mode)) { | |
2201 | log_error("%s is not a directory.", i->path); | |
19fbec19 | 2202 | return -ENOTDIR; |
78a92a5a MS |
2203 | } |
2204 | ||
4a62c710 MS |
2205 | if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) |
2206 | return log_error_errno(errno, "stat(%s/..) failed: %m", i->path); | |
78a92a5a | 2207 | |
2bb158c1 | 2208 | mountpoint = s.st_dev != ps.st_dev || s.st_ino == ps.st_ino; |
78a92a5a | 2209 | |
582deb84 ZJS |
2210 | log_debug("Cleanup threshold for %s \"%s\" is %s", |
2211 | mountpoint ? "mount point" : "directory", | |
2212 | instance, | |
2213 | format_timestamp_us(timestamp, sizeof(timestamp), cutoff)); | |
2214 | ||
2215 | return dir_cleanup(i, instance, d, &s, cutoff, s.st_dev, mountpoint, | |
2216 | MAX_DEPTH, i->keep_first_level); | |
78a92a5a MS |
2217 | } |
2218 | ||
2219 | static int clean_item(Item *i) { | |
78a92a5a MS |
2220 | assert(i); |
2221 | ||
582deb84 ZJS |
2222 | log_debug("Running clean action for entry %c %s", (char) i->type, i->path); |
2223 | ||
78a92a5a MS |
2224 | switch (i->type) { |
2225 | case CREATE_DIRECTORY: | |
d7b8eec7 | 2226 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
2227 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
2228 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
78a92a5a MS |
2229 | case TRUNCATE_DIRECTORY: |
2230 | case IGNORE_PATH: | |
849958d1 | 2231 | case COPY_FILES: |
78a92a5a | 2232 | clean_item_instance(i, i->path); |
df8dee85 | 2233 | return 0; |
65241c14 | 2234 | case EMPTY_DIRECTORY: |
78a92a5a | 2235 | case IGNORE_DIRECTORY_PATH: |
936f6bdb | 2236 | return glob_item(i, clean_item_instance); |
78a92a5a | 2237 | default: |
df8dee85 | 2238 | return 0; |
78a92a5a | 2239 | } |
78a92a5a MS |
2240 | } |
2241 | ||
3f93da98 ZJS |
2242 | static int process_item_array(ItemArray *array); |
2243 | ||
3b63d2d3 | 2244 | static int process_item(Item *i) { |
1e95893a | 2245 | int r, q, p, t = 0; |
9348f0e6 | 2246 | _cleanup_free_ char *prefix = NULL; |
3b63d2d3 LP |
2247 | |
2248 | assert(i); | |
2249 | ||
1910cd0e LP |
2250 | if (i->done) |
2251 | return 0; | |
2252 | ||
2253 | i->done = true; | |
2254 | ||
9348f0e6 ZJS |
2255 | prefix = malloc(strlen(i->path) + 1); |
2256 | if (!prefix) | |
2257 | return log_oom(); | |
2258 | ||
1910cd0e | 2259 | PATH_FOREACH_PREFIX(prefix, i->path) { |
3f93da98 | 2260 | ItemArray *j; |
1910cd0e | 2261 | |
ef43a391 | 2262 | j = ordered_hashmap_get(items, prefix); |
1db50423 ZJS |
2263 | if (j) { |
2264 | int s; | |
2265 | ||
3f93da98 | 2266 | s = process_item_array(j); |
1db50423 ZJS |
2267 | if (s < 0 && t == 0) |
2268 | t = s; | |
2269 | } | |
1910cd0e LP |
2270 | } |
2271 | ||
655f2da0 N |
2272 | if (chase_symlinks(i->path, NULL, CHASE_NO_AUTOFS, NULL) == -EREMOTE) |
2273 | return t; | |
2274 | ||
3b63d2d3 | 2275 | r = arg_create ? create_item(i) : 0; |
a0896123 | 2276 | q = arg_remove ? remove_item(i) : 0; |
3b63d2d3 | 2277 | p = arg_clean ? clean_item(i) : 0; |
6d7b5433 WD |
2278 | /* Failure can only be tolerated for create */ |
2279 | if (i->allow_failure) | |
2280 | r = 0; | |
3b63d2d3 | 2281 | |
1db50423 ZJS |
2282 | return t < 0 ? t : |
2283 | r < 0 ? r : | |
2284 | q < 0 ? q : | |
2285 | p; | |
3b63d2d3 LP |
2286 | } |
2287 | ||
3f93da98 ZJS |
2288 | static int process_item_array(ItemArray *array) { |
2289 | unsigned n; | |
2290 | int r = 0, k; | |
753615e8 | 2291 | |
3f93da98 ZJS |
2292 | assert(array); |
2293 | ||
2294 | for (n = 0; n < array->count; n++) { | |
2295 | k = process_item(array->items + n); | |
2296 | if (k < 0 && r == 0) | |
2297 | r = k; | |
2298 | } | |
2299 | ||
2300 | return r; | |
2301 | } | |
3b63d2d3 | 2302 | |
3f93da98 ZJS |
2303 | static void item_free_contents(Item *i) { |
2304 | assert(i); | |
3b63d2d3 | 2305 | free(i->path); |
468d726b | 2306 | free(i->argument); |
ebf4e801 | 2307 | strv_free(i->xattrs); |
f8eeeaf9 | 2308 | |
349cc4a5 | 2309 | #if HAVE_ACL |
f8eeeaf9 ZJS |
2310 | acl_free(i->acl_access); |
2311 | acl_free(i->acl_default); | |
2312 | #endif | |
3b63d2d3 LP |
2313 | } |
2314 | ||
3f93da98 ZJS |
2315 | static void item_array_free(ItemArray *a) { |
2316 | unsigned n; | |
2317 | ||
2318 | if (!a) | |
2319 | return; | |
2320 | ||
2321 | for (n = 0; n < a->count; n++) | |
2322 | item_free_contents(a->items + n); | |
2323 | free(a->items); | |
2324 | free(a); | |
2325 | } | |
e2f2fb78 | 2326 | |
93bab288 | 2327 | static int item_compare(const Item *a, const Item *b) { |
17493fa5 LP |
2328 | /* Make sure that the ownership taking item is put first, so |
2329 | * that we first create the node, and then can adjust it */ | |
2330 | ||
93bab288 | 2331 | if (takes_ownership(a->type) && !takes_ownership(b->type)) |
17493fa5 | 2332 | return -1; |
93bab288 | 2333 | if (!takes_ownership(a->type) && takes_ownership(b->type)) |
17493fa5 LP |
2334 | return 1; |
2335 | ||
93bab288 | 2336 | return CMP(a->type, b->type); |
17493fa5 LP |
2337 | } |
2338 | ||
3f93da98 | 2339 | static bool item_compatible(Item *a, Item *b) { |
bfe95f35 LP |
2340 | assert(a); |
2341 | assert(b); | |
3f93da98 | 2342 | assert(streq(a->path, b->path)); |
bfe95f35 | 2343 | |
3f93da98 ZJS |
2344 | if (takes_ownership(a->type) && takes_ownership(b->type)) |
2345 | /* check if the items are the same */ | |
2346 | return streq_ptr(a->argument, b->argument) && | |
bfe95f35 | 2347 | |
3f93da98 ZJS |
2348 | a->uid_set == b->uid_set && |
2349 | a->uid == b->uid && | |
bfe95f35 | 2350 | |
3f93da98 ZJS |
2351 | a->gid_set == b->gid_set && |
2352 | a->gid == b->gid && | |
bfe95f35 | 2353 | |
3f93da98 ZJS |
2354 | a->mode_set == b->mode_set && |
2355 | a->mode == b->mode && | |
bfe95f35 | 2356 | |
3f93da98 ZJS |
2357 | a->age_set == b->age_set && |
2358 | a->age == b->age && | |
bfe95f35 | 2359 | |
3f93da98 | 2360 | a->mask_perms == b->mask_perms && |
bfe95f35 | 2361 | |
3f93da98 | 2362 | a->keep_first_level == b->keep_first_level && |
468d726b | 2363 | |
3f93da98 | 2364 | a->major_minor == b->major_minor; |
468d726b | 2365 | |
bfe95f35 LP |
2366 | return true; |
2367 | } | |
2368 | ||
a2aced4a DR |
2369 | static bool should_include_path(const char *path) { |
2370 | char **prefix; | |
2371 | ||
abef3f91 | 2372 | STRV_FOREACH(prefix, arg_exclude_prefixes) |
582deb84 ZJS |
2373 | if (path_startswith(path, *prefix)) { |
2374 | log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.", | |
2375 | path, *prefix); | |
5c795114 | 2376 | return false; |
582deb84 | 2377 | } |
a2aced4a | 2378 | |
abef3f91 | 2379 | STRV_FOREACH(prefix, arg_include_prefixes) |
582deb84 ZJS |
2380 | if (path_startswith(path, *prefix)) { |
2381 | log_debug("Entry \"%s\" matches include prefix \"%s\".", path, *prefix); | |
a2aced4a | 2382 | return true; |
582deb84 | 2383 | } |
a2aced4a | 2384 | |
5c795114 DR |
2385 | /* no matches, so we should include this path only if we |
2386 | * have no whitelist at all */ | |
7b943bb7 | 2387 | if (strv_isempty(arg_include_prefixes)) |
582deb84 ZJS |
2388 | return true; |
2389 | ||
2390 | log_debug("Entry \"%s\" does not match any include prefix, skipping.", path); | |
2391 | return false; | |
a2aced4a DR |
2392 | } |
2393 | ||
4cef1923 FB |
2394 | static int specifier_expansion_from_arg(Item *i) { |
2395 | _cleanup_free_ char *unescaped = NULL, *resolved = NULL; | |
2396 | char **xattr; | |
2397 | int r; | |
2398 | ||
2399 | assert(i); | |
2400 | ||
2401 | if (i->argument == NULL) | |
2402 | return 0; | |
2403 | ||
2404 | switch (i->type) { | |
2405 | case COPY_FILES: | |
2406 | case CREATE_SYMLINK: | |
2407 | case CREATE_FILE: | |
2408 | case TRUNCATE_FILE: | |
2409 | case WRITE_FILE: | |
2410 | r = cunescape(i->argument, 0, &unescaped); | |
2411 | if (r < 0) | |
2412 | return log_error_errno(r, "Failed to unescape parameter to write: %s", i->argument); | |
2413 | ||
2414 | r = specifier_printf(unescaped, specifier_table, NULL, &resolved); | |
2415 | if (r < 0) | |
2416 | return r; | |
2417 | ||
2418 | free_and_replace(i->argument, resolved); | |
2419 | break; | |
2420 | ||
2421 | case SET_XATTR: | |
2422 | case RECURSIVE_SET_XATTR: | |
2423 | assert(i->xattrs); | |
2424 | ||
2425 | STRV_FOREACH (xattr, i->xattrs) { | |
2426 | r = specifier_printf(*xattr, specifier_table, NULL, &resolved); | |
2427 | if (r < 0) | |
2428 | return r; | |
2429 | ||
2430 | free_and_replace(*xattr, resolved); | |
2431 | } | |
2432 | break; | |
2433 | ||
2434 | default: | |
2435 | break; | |
2436 | } | |
2437 | return 0; | |
2438 | } | |
2439 | ||
a2d1fb88 LP |
2440 | static int patch_var_run(const char *fname, unsigned line, char **path) { |
2441 | const char *k; | |
2442 | char *n; | |
2443 | ||
2444 | assert(path); | |
2445 | assert(*path); | |
2446 | ||
2447 | /* Optionally rewrites lines referencing /var/run/, to use /run/ instead. Why bother? tmpfiles merges lines in | |
2448 | * some cases and detects conflicts in others. If files/directories are specified through two equivalent lines | |
2449 | * this is problematic as neither case will be detected. Ideally we'd detect these cases by resolving symlinks | |
2450 | * early, but that's precisely not what we can do here as this code very likely is running very early on, at a | |
2451 | * time where the paths in question are not available yet, or even more importantly, our own tmpfiles rules | |
2452 | * might create the paths that are intermediary to the listed paths. We can't really cover the generic case, | |
2453 | * but the least we can do is cover the specific case of /var/run vs. /run, as /var/run is a legacy name for | |
2454 | * /run only, and we explicitly document that and require that on systemd systems the former is a symlink to | |
2455 | * the latter. Moreover files below this path are by far the primary usecase for tmpfiles.d/. */ | |
2456 | ||
2457 | k = path_startswith(*path, "/var/run/"); | |
2458 | if (isempty(k)) /* Don't complain about other paths than /var/run, and not about /var/run itself either. */ | |
2459 | return 0; | |
2460 | ||
2461 | n = strjoin("/run/", k); | |
2462 | if (!n) | |
2463 | return log_oom(); | |
2464 | ||
2465 | /* Also log about this briefly. We do so at LOG_NOTICE level, as we fixed up the situation automatically, hence | |
2466 | * there's no immediate need for action by the user. However, in the interest of making things less confusing | |
2467 | * to the user, let's still inform the user that these snippets should really be updated. */ | |
2468 | ||
2469 | 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); | |
2470 | ||
2471 | free(*path); | |
2472 | *path = n; | |
2473 | ||
2474 | return 0; | |
2475 | } | |
2476 | ||
d9daae55 | 2477 | static int parse_line(const char *fname, unsigned line, const char *buffer, bool *invalid_config) { |
1731e34a | 2478 | |
cde684a2 | 2479 | _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL; |
3f93da98 ZJS |
2480 | _cleanup_(item_free_contents) Item i = {}; |
2481 | ItemArray *existing; | |
ef43a391 | 2482 | OrderedHashmap *h; |
657cf7f4 | 2483 | int r, pos; |
6d7b5433 | 2484 | bool force = false, boot = false, allow_failure = false; |
3b63d2d3 LP |
2485 | |
2486 | assert(fname); | |
2487 | assert(line >= 1); | |
2488 | assert(buffer); | |
2489 | ||
68685607 | 2490 | r = extract_many_words( |
4034a06d | 2491 | &buffer, |
68685607 | 2492 | NULL, |
12ba2c44 | 2493 | EXTRACT_QUOTES, |
4034a06d LP |
2494 | &action, |
2495 | &path, | |
2496 | &mode, | |
2497 | &user, | |
2498 | &group, | |
2499 | &age, | |
2500 | NULL); | |
d9daae55 | 2501 | if (r < 0) { |
751223fe ZJS |
2502 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
2503 | /* invalid quoting and such or an unknown specifier */ | |
d9daae55 | 2504 | *invalid_config = true; |
657cf7f4 | 2505 | return log_error_errno(r, "[%s:%u] Failed to parse line: %m", fname, line); |
4b93699d | 2506 | } else if (r < 2) { |
d9daae55 | 2507 | *invalid_config = true; |
3b63d2d3 | 2508 | log_error("[%s:%u] Syntax error.", fname, line); |
7f2c1f4d | 2509 | return -EIO; |
5008d581 LP |
2510 | } |
2511 | ||
aa5f6817 | 2512 | if (!isempty(buffer) && !streq(buffer, "-")) { |
4034a06d LP |
2513 | i.argument = strdup(buffer); |
2514 | if (!i.argument) | |
2515 | return log_oom(); | |
2516 | } | |
2517 | ||
2e78fa79 | 2518 | if (isempty(action)) { |
d9daae55 | 2519 | *invalid_config = true; |
2e78fa79 | 2520 | log_error("[%s:%u] Command too short '%s'.", fname, line, action); |
c4708f13 | 2521 | return -EINVAL; |
2e78fa79 LP |
2522 | } |
2523 | ||
5f255144 ZJS |
2524 | for (pos = 1; action[pos]; pos++) { |
2525 | if (action[pos] == '!' && !boot) | |
2526 | boot = true; | |
2527 | else if (action[pos] == '+' && !force) | |
2528 | force = true; | |
6d7b5433 WD |
2529 | else if (action[pos] == '-' && !allow_failure) |
2530 | allow_failure = true; | |
5f255144 | 2531 | else { |
d9daae55 | 2532 | *invalid_config = true; |
5f255144 ZJS |
2533 | log_error("[%s:%u] Unknown modifiers in command '%s'", |
2534 | fname, line, action); | |
2535 | return -EINVAL; | |
2536 | } | |
2e78fa79 LP |
2537 | } |
2538 | ||
582deb84 ZJS |
2539 | if (boot && !arg_boot) { |
2540 | log_debug("Ignoring entry %s \"%s\" because --boot is not specified.", | |
2541 | action, path); | |
c4708f13 | 2542 | return 0; |
582deb84 | 2543 | } |
c4708f13 | 2544 | |
3f93da98 ZJS |
2545 | i.type = action[0]; |
2546 | i.force = force; | |
6d7b5433 | 2547 | i.allow_failure = allow_failure; |
2e78fa79 | 2548 | |
3f93da98 | 2549 | r = specifier_printf(path, specifier_table, NULL, &i.path); |
5a8575ef | 2550 | if (r == -ENXIO) |
4cef1923 | 2551 | return log_unresolvable_specifier(fname, line); |
d9daae55 | 2552 | if (r < 0) { |
751223fe ZJS |
2553 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
2554 | *invalid_config = true; | |
4cef1923 | 2555 | return log_error_errno(r, "[%s:%u] Failed to replace specifiers: %s", fname, line, path); |
d9daae55 | 2556 | } |
1731e34a | 2557 | |
a2d1fb88 LP |
2558 | r = patch_var_run(fname, line, &i.path); |
2559 | if (r < 0) | |
2560 | return r; | |
2561 | ||
3f93da98 | 2562 | switch (i.type) { |
468d726b | 2563 | |
777b87e7 | 2564 | case CREATE_DIRECTORY: |
d7b8eec7 | 2565 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
2566 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
2567 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
df8dee85 | 2568 | case EMPTY_DIRECTORY: |
777b87e7 MS |
2569 | case TRUNCATE_DIRECTORY: |
2570 | case CREATE_FIFO: | |
2571 | case IGNORE_PATH: | |
78a92a5a | 2572 | case IGNORE_DIRECTORY_PATH: |
777b87e7 MS |
2573 | case REMOVE_PATH: |
2574 | case RECURSIVE_REMOVE_PATH: | |
e73a03e0 | 2575 | case ADJUST_MODE: |
777b87e7 MS |
2576 | case RELABEL_PATH: |
2577 | case RECURSIVE_RELABEL_PATH: | |
c82500c6 | 2578 | if (i.argument) |
bd550f78 | 2579 | log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname, line, i.type); |
c82500c6 LP |
2580 | |
2581 | break; | |
2582 | ||
2583 | case CREATE_FILE: | |
2584 | case TRUNCATE_FILE: | |
777b87e7 | 2585 | break; |
468d726b LP |
2586 | |
2587 | case CREATE_SYMLINK: | |
3f93da98 ZJS |
2588 | if (!i.argument) { |
2589 | i.argument = strappend("/usr/share/factory/", i.path); | |
2590 | if (!i.argument) | |
2f3b873a | 2591 | return log_oom(); |
468d726b LP |
2592 | } |
2593 | break; | |
2594 | ||
31ed59c5 | 2595 | case WRITE_FILE: |
3f93da98 | 2596 | if (!i.argument) { |
d9daae55 | 2597 | *invalid_config = true; |
31ed59c5 | 2598 | log_error("[%s:%u] Write file requires argument.", fname, line); |
7f2c1f4d | 2599 | return -EBADMSG; |
31ed59c5 LP |
2600 | } |
2601 | break; | |
2602 | ||
849958d1 | 2603 | case COPY_FILES: |
3f93da98 ZJS |
2604 | if (!i.argument) { |
2605 | i.argument = strappend("/usr/share/factory/", i.path); | |
2606 | if (!i.argument) | |
2f3b873a | 2607 | return log_oom(); |
3f93da98 | 2608 | } else if (!path_is_absolute(i.argument)) { |
d9daae55 | 2609 | *invalid_config = true; |
849958d1 LP |
2610 | log_error("[%s:%u] Source path is not absolute.", fname, line); |
2611 | return -EBADMSG; | |
2612 | } | |
2613 | ||
858d36c1 | 2614 | path_simplify(i.argument, false); |
849958d1 LP |
2615 | break; |
2616 | ||
468d726b LP |
2617 | case CREATE_CHAR_DEVICE: |
2618 | case CREATE_BLOCK_DEVICE: { | |
2619 | unsigned major, minor; | |
2620 | ||
3f93da98 | 2621 | if (!i.argument) { |
d9daae55 | 2622 | *invalid_config = true; |
468d726b | 2623 | log_error("[%s:%u] Device file requires argument.", fname, line); |
7f2c1f4d | 2624 | return -EBADMSG; |
468d726b LP |
2625 | } |
2626 | ||
3f93da98 | 2627 | if (sscanf(i.argument, "%u:%u", &major, &minor) != 2) { |
d9daae55 | 2628 | *invalid_config = true; |
3f93da98 | 2629 | log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname, line, i.argument); |
7f2c1f4d | 2630 | return -EBADMSG; |
468d726b LP |
2631 | } |
2632 | ||
3f93da98 | 2633 | i.major_minor = makedev(major, minor); |
468d726b LP |
2634 | break; |
2635 | } | |
2636 | ||
ebf4e801 | 2637 | case SET_XATTR: |
b705ab6a | 2638 | case RECURSIVE_SET_XATTR: |
3f93da98 | 2639 | if (!i.argument) { |
d9daae55 | 2640 | *invalid_config = true; |
ebf4e801 MW |
2641 | log_error("[%s:%u] Set extended attribute requires argument.", fname, line); |
2642 | return -EBADMSG; | |
2643 | } | |
bd550f78 | 2644 | r = parse_xattrs_from_arg(&i); |
ebf4e801 MW |
2645 | if (r < 0) |
2646 | return r; | |
2647 | break; | |
2648 | ||
f8eeeaf9 | 2649 | case SET_ACL: |
b705ab6a | 2650 | case RECURSIVE_SET_ACL: |
f8eeeaf9 | 2651 | if (!i.argument) { |
d9daae55 | 2652 | *invalid_config = true; |
f8eeeaf9 ZJS |
2653 | log_error("[%s:%u] Set ACLs requires argument.", fname, line); |
2654 | return -EBADMSG; | |
2655 | } | |
bd550f78 | 2656 | r = parse_acls_from_arg(&i); |
f8eeeaf9 ZJS |
2657 | if (r < 0) |
2658 | return r; | |
2659 | break; | |
2660 | ||
88ec4dfa LP |
2661 | case SET_ATTRIBUTE: |
2662 | case RECURSIVE_SET_ATTRIBUTE: | |
22c3a6ca | 2663 | if (!i.argument) { |
d9daae55 | 2664 | *invalid_config = true; |
88ec4dfa | 2665 | log_error("[%s:%u] Set file attribute requires argument.", fname, line); |
22c3a6ca GB |
2666 | return -EBADMSG; |
2667 | } | |
bd550f78 | 2668 | r = parse_attribute_from_arg(&i); |
751223fe | 2669 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
d9daae55 | 2670 | *invalid_config = true; |
22c3a6ca GB |
2671 | if (r < 0) |
2672 | return r; | |
2673 | break; | |
2674 | ||
777b87e7 | 2675 | default: |
582deb84 | 2676 | log_error("[%s:%u] Unknown command type '%c'.", fname, line, (char) i.type); |
d9daae55 | 2677 | *invalid_config = true; |
7f2c1f4d | 2678 | return -EBADMSG; |
3b63d2d3 | 2679 | } |
468d726b | 2680 | |
3f93da98 ZJS |
2681 | if (!path_is_absolute(i.path)) { |
2682 | log_error("[%s:%u] Path '%s' not absolute.", fname, line, i.path); | |
d9daae55 | 2683 | *invalid_config = true; |
7f2c1f4d | 2684 | return -EBADMSG; |
3b63d2d3 LP |
2685 | } |
2686 | ||
858d36c1 | 2687 | path_simplify(i.path, false); |
3b63d2d3 | 2688 | |
3f93da98 | 2689 | if (!should_include_path(i.path)) |
7f2c1f4d | 2690 | return 0; |
5008d581 | 2691 | |
4cef1923 | 2692 | r = specifier_expansion_from_arg(&i); |
5a8575ef | 2693 | if (r == -ENXIO) |
4cef1923 | 2694 | return log_unresolvable_specifier(fname, line); |
751223fe ZJS |
2695 | if (r < 0) { |
2696 | if (IN_SET(r, -EINVAL, -EBADSLT)) | |
2697 | *invalid_config = true; | |
4cef1923 FB |
2698 | return log_error_errno(r, "[%s:%u] Failed to substitute specifiers in argument: %m", |
2699 | fname, line); | |
751223fe | 2700 | } |
4cef1923 | 2701 | |
cf9a4abd | 2702 | if (arg_root) { |
cde684a2 LP |
2703 | char *p; |
2704 | ||
1d13f648 | 2705 | p = prefix_root(arg_root, i.path); |
cf9a4abd MM |
2706 | if (!p) |
2707 | return log_oom(); | |
2708 | ||
3f93da98 ZJS |
2709 | free(i.path); |
2710 | i.path = p; | |
cf9a4abd MM |
2711 | } |
2712 | ||
90937fe3 | 2713 | if (!isempty(user) && !streq(user, "-")) { |
4b67834e LP |
2714 | const char *u = user; |
2715 | ||
fafff8f1 | 2716 | r = get_user_creds(&u, &i.uid, NULL, NULL, NULL, USER_CREDS_ALLOW_MISSING); |
4b67834e | 2717 | if (r < 0) { |
d9daae55 ZJS |
2718 | *invalid_config = true; |
2719 | return log_error_errno(r, "[%s:%u] Unknown user '%s'.", fname, line, user); | |
3b63d2d3 LP |
2720 | } |
2721 | ||
3f93da98 | 2722 | i.uid_set = true; |
3b63d2d3 LP |
2723 | } |
2724 | ||
90937fe3 | 2725 | if (!isempty(group) && !streq(group, "-")) { |
4b67834e LP |
2726 | const char *g = group; |
2727 | ||
fafff8f1 | 2728 | r = get_group_creds(&g, &i.gid, USER_CREDS_ALLOW_MISSING); |
4b67834e | 2729 | if (r < 0) { |
d9daae55 | 2730 | *invalid_config = true; |
3b63d2d3 | 2731 | log_error("[%s:%u] Unknown group '%s'.", fname, line, group); |
7f2c1f4d | 2732 | return r; |
3b63d2d3 LP |
2733 | } |
2734 | ||
3f93da98 | 2735 | i.gid_set = true; |
3b63d2d3 LP |
2736 | } |
2737 | ||
90937fe3 | 2738 | if (!isempty(mode) && !streq(mode, "-")) { |
abef3f91 | 2739 | const char *mm = mode; |
3b63d2d3 LP |
2740 | unsigned m; |
2741 | ||
abef3f91 | 2742 | if (*mm == '~') { |
3f93da98 | 2743 | i.mask_perms = true; |
abef3f91 LP |
2744 | mm++; |
2745 | } | |
2746 | ||
2ff7b0a5 | 2747 | if (parse_mode(mm, &m) < 0) { |
d9daae55 | 2748 | *invalid_config = true; |
3b63d2d3 | 2749 | log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode); |
2ff7b0a5 | 2750 | return -EBADMSG; |
3b63d2d3 LP |
2751 | } |
2752 | ||
3f93da98 ZJS |
2753 | i.mode = m; |
2754 | i.mode_set = true; | |
3b63d2d3 | 2755 | } else |
5fb13eb5 | 2756 | i.mode = IN_SET(i.type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA) ? 0755 : 0644; |
3b63d2d3 | 2757 | |
90937fe3 | 2758 | if (!isempty(age) && !streq(age, "-")) { |
24f3a374 LP |
2759 | const char *a = age; |
2760 | ||
2761 | if (*a == '~') { | |
3f93da98 | 2762 | i.keep_first_level = true; |
24f3a374 LP |
2763 | a++; |
2764 | } | |
2765 | ||
3f93da98 | 2766 | if (parse_sec(a, &i.age) < 0) { |
d9daae55 | 2767 | *invalid_config = true; |
3b63d2d3 | 2768 | log_error("[%s:%u] Invalid age '%s'.", fname, line, age); |
7f2c1f4d | 2769 | return -EBADMSG; |
3b63d2d3 LP |
2770 | } |
2771 | ||
3f93da98 | 2772 | i.age_set = true; |
3b63d2d3 LP |
2773 | } |
2774 | ||
3f93da98 | 2775 | h = needs_glob(i.type) ? globs : items; |
bfe95f35 | 2776 | |
ef43a391 | 2777 | existing = ordered_hashmap_get(h, i.path); |
468d726b | 2778 | if (existing) { |
3f93da98 ZJS |
2779 | unsigned n; |
2780 | ||
2781 | for (n = 0; n < existing->count; n++) { | |
6487ada8 | 2782 | if (!item_compatible(existing->items + n, &i)) { |
e286dbaf ZJS |
2783 | log_notice("[%s:%u] Duplicate line for path \"%s\", ignoring.", |
2784 | fname, line, i.path); | |
6487ada8 MP |
2785 | return 0; |
2786 | } | |
ebf4e801 MW |
2787 | } |
2788 | } else { | |
3f93da98 | 2789 | existing = new0(ItemArray, 1); |
07982ed1 LP |
2790 | if (!existing) |
2791 | return log_oom(); | |
2792 | ||
ef43a391 | 2793 | r = ordered_hashmap_put(h, i.path, existing); |
3f93da98 ZJS |
2794 | if (r < 0) |
2795 | return log_oom(); | |
bfe95f35 LP |
2796 | } |
2797 | ||
3f93da98 ZJS |
2798 | if (!GREEDY_REALLOC(existing->items, existing->size, existing->count + 1)) |
2799 | return log_oom(); | |
5008d581 | 2800 | |
3f93da98 | 2801 | memcpy(existing->items + existing->count++, &i, sizeof(i)); |
dd449aca ZJS |
2802 | |
2803 | /* Sort item array, to enforce stable ordering of application */ | |
93bab288 | 2804 | typesafe_qsort(existing->items, existing->count, item_compare); |
17493fa5 | 2805 | |
3f93da98 | 2806 | zero(i); |
7f2c1f4d | 2807 | return 0; |
5008d581 LP |
2808 | } |
2809 | ||
ceaaeb9b ZJS |
2810 | static int cat_config(char **config_dirs, char **args) { |
2811 | _cleanup_strv_free_ char **files = NULL; | |
2812 | int r; | |
2813 | ||
2814 | r = conf_files_list_with_replacement(arg_root, config_dirs, arg_replace, &files, NULL); | |
2815 | if (r < 0) | |
2816 | return r; | |
2817 | ||
2818 | return cat_files(NULL, files, 0); | |
2819 | } | |
2820 | ||
37ec0fdd LP |
2821 | static int help(void) { |
2822 | _cleanup_free_ char *link = NULL; | |
2823 | int r; | |
2824 | ||
2825 | r = terminal_urlify_man("systemd-tmpfiles", "8", &link); | |
2826 | if (r < 0) | |
2827 | return log_oom(); | |
2828 | ||
522d4a49 LP |
2829 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
2830 | "Creates, deletes and cleans up volatile and temporary files and directories.\n\n" | |
5c795114 | 2831 | " -h --help Show this help\n" |
f2b5ca0e | 2832 | " --user Execute user configuration\n" |
eb9da376 | 2833 | " --version Show package version\n" |
ceaaeb9b | 2834 | " --cat-config Show configuration files\n" |
5c795114 DR |
2835 | " --create Create marked files/directories\n" |
2836 | " --clean Clean up marked directories\n" | |
2837 | " --remove Remove marked files/directories\n" | |
81815651 | 2838 | " --boot Execute actions only safe at boot\n" |
79ca888f ZJS |
2839 | " --prefix=PATH Only apply rules with the specified prefix\n" |
2840 | " --exclude-prefix=PATH Ignore rules with the specified prefix\n" | |
d9daae55 | 2841 | " --root=PATH Operate on an alternate filesystem root\n" |
a6d8474f | 2842 | " --replace=PATH Treat arguments as replacement for PATH\n" |
dcd5c891 | 2843 | " --no-pager Do not pipe output into a pager\n" |
37ec0fdd LP |
2844 | "\nSee the %s for details.\n" |
2845 | , program_invocation_short_name | |
2846 | , link | |
2847 | ); | |
2848 | ||
2849 | return 0; | |
3b63d2d3 LP |
2850 | } |
2851 | ||
2852 | static int parse_argv(int argc, char *argv[]) { | |
2853 | ||
2854 | enum { | |
eb9da376 | 2855 | ARG_VERSION = 0x100, |
ceaaeb9b | 2856 | ARG_CAT_CONFIG, |
f2b5ca0e | 2857 | ARG_USER, |
3b63d2d3 LP |
2858 | ARG_CREATE, |
2859 | ARG_CLEAN, | |
fba6e687 | 2860 | ARG_REMOVE, |
81815651 | 2861 | ARG_BOOT, |
5c795114 DR |
2862 | ARG_PREFIX, |
2863 | ARG_EXCLUDE_PREFIX, | |
cf9a4abd | 2864 | ARG_ROOT, |
a6d8474f | 2865 | ARG_REPLACE, |
dcd5c891 | 2866 | ARG_NO_PAGER, |
3b63d2d3 LP |
2867 | }; |
2868 | ||
2869 | static const struct option options[] = { | |
5c795114 | 2870 | { "help", no_argument, NULL, 'h' }, |
f2b5ca0e | 2871 | { "user", no_argument, NULL, ARG_USER }, |
eb9da376 | 2872 | { "version", no_argument, NULL, ARG_VERSION }, |
ceaaeb9b | 2873 | { "cat-config", no_argument, NULL, ARG_CAT_CONFIG }, |
5c795114 DR |
2874 | { "create", no_argument, NULL, ARG_CREATE }, |
2875 | { "clean", no_argument, NULL, ARG_CLEAN }, | |
2876 | { "remove", no_argument, NULL, ARG_REMOVE }, | |
81815651 | 2877 | { "boot", no_argument, NULL, ARG_BOOT }, |
5c795114 DR |
2878 | { "prefix", required_argument, NULL, ARG_PREFIX }, |
2879 | { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX }, | |
cf9a4abd | 2880 | { "root", required_argument, NULL, ARG_ROOT }, |
a6d8474f | 2881 | { "replace", required_argument, NULL, ARG_REPLACE }, |
dcd5c891 | 2882 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, |
eb9da376 | 2883 | {} |
3b63d2d3 LP |
2884 | }; |
2885 | ||
0f474365 | 2886 | int c, r; |
3b63d2d3 LP |
2887 | |
2888 | assert(argc >= 0); | |
2889 | assert(argv); | |
2890 | ||
601185b4 | 2891 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
3b63d2d3 LP |
2892 | |
2893 | switch (c) { | |
2894 | ||
2895 | case 'h': | |
37ec0fdd | 2896 | return help(); |
eb9da376 LP |
2897 | |
2898 | case ARG_VERSION: | |
3f6fd1ba | 2899 | return version(); |
3b63d2d3 | 2900 | |
ceaaeb9b ZJS |
2901 | case ARG_CAT_CONFIG: |
2902 | arg_cat_config = true; | |
2903 | break; | |
2904 | ||
f2b5ca0e ZJS |
2905 | case ARG_USER: |
2906 | arg_user = true; | |
2907 | break; | |
2908 | ||
3b63d2d3 LP |
2909 | case ARG_CREATE: |
2910 | arg_create = true; | |
2911 | break; | |
2912 | ||
2913 | case ARG_CLEAN: | |
2914 | arg_clean = true; | |
2915 | break; | |
2916 | ||
2917 | case ARG_REMOVE: | |
2918 | arg_remove = true; | |
2919 | break; | |
2920 | ||
81815651 ZJS |
2921 | case ARG_BOOT: |
2922 | arg_boot = true; | |
c4708f13 ZJS |
2923 | break; |
2924 | ||
fba6e687 | 2925 | case ARG_PREFIX: |
7bc040fa | 2926 | if (strv_push(&arg_include_prefixes, optarg) < 0) |
a2aced4a | 2927 | return log_oom(); |
fba6e687 LP |
2928 | break; |
2929 | ||
5c795114 | 2930 | case ARG_EXCLUDE_PREFIX: |
7bc040fa | 2931 | if (strv_push(&arg_exclude_prefixes, optarg) < 0) |
5c795114 DR |
2932 | return log_oom(); |
2933 | break; | |
2934 | ||
cf9a4abd | 2935 | case ARG_ROOT: |
0f03c2a4 | 2936 | r = parse_path_argument_and_warn(optarg, true, &arg_root); |
0f474365 | 2937 | if (r < 0) |
0f03c2a4 | 2938 | return r; |
cf9a4abd MM |
2939 | break; |
2940 | ||
a6d8474f ZJS |
2941 | case ARG_REPLACE: |
2942 | if (!path_is_absolute(optarg) || | |
2943 | !endswith(optarg, ".conf")) { | |
2944 | log_error("The argument to --replace= must an absolute path to a config file"); | |
2945 | return -EINVAL; | |
2946 | } | |
2947 | ||
2948 | arg_replace = optarg; | |
2949 | break; | |
2950 | ||
dcd5c891 LP |
2951 | case ARG_NO_PAGER: |
2952 | arg_no_pager = true; | |
2953 | break; | |
2954 | ||
3b63d2d3 LP |
2955 | case '?': |
2956 | return -EINVAL; | |
2957 | ||
2958 | default: | |
eb9da376 | 2959 | assert_not_reached("Unhandled option"); |
3b63d2d3 | 2960 | } |
3b63d2d3 | 2961 | |
ceaaeb9b | 2962 | if (!arg_clean && !arg_create && !arg_remove && !arg_cat_config) { |
35b8ca3a | 2963 | log_error("You need to specify at least one of --clean, --create or --remove."); |
3b63d2d3 LP |
2964 | return -EINVAL; |
2965 | } | |
2966 | ||
ceaaeb9b ZJS |
2967 | if (arg_replace && arg_cat_config) { |
2968 | log_error("Option --replace= is not supported with --cat-config"); | |
2969 | return -EINVAL; | |
2970 | } | |
2971 | ||
a6d8474f ZJS |
2972 | if (arg_replace && optind >= argc) { |
2973 | log_error("When --replace= is given, some configuration items must be specified"); | |
2974 | return -EINVAL; | |
2975 | } | |
2976 | ||
3b63d2d3 LP |
2977 | return 1; |
2978 | } | |
2979 | ||
a6d8474f | 2980 | static int read_config_file(char **config_dirs, const char *fn, bool ignore_enoent, bool *invalid_config) { |
f7ac1ed2 ZJS |
2981 | _cleanup_fclose_ FILE *_f = NULL; |
2982 | FILE *f; | |
1731e34a | 2983 | char line[LINE_MAX]; |
78a92a5a | 2984 | Iterator iterator; |
1731e34a | 2985 | unsigned v = 0; |
78a92a5a | 2986 | Item *i; |
4e68ec18 | 2987 | int r = 0; |
fba6e687 LP |
2988 | |
2989 | assert(fn); | |
2990 | ||
f7ac1ed2 | 2991 | if (streq(fn, "-")) { |
a6d8474f | 2992 | log_debug("Reading config from stdin…"); |
f7ac1ed2 ZJS |
2993 | fn = "<stdin>"; |
2994 | f = stdin; | |
2995 | } else { | |
a6d8474f | 2996 | r = search_and_fopen(fn, "re", arg_root, (const char**) config_dirs, &_f); |
f7ac1ed2 ZJS |
2997 | if (r < 0) { |
2998 | if (ignore_enoent && r == -ENOENT) { | |
2999 | log_debug_errno(r, "Failed to open \"%s\", ignoring: %m", fn); | |
3000 | return 0; | |
3001 | } | |
fba6e687 | 3002 | |
f7ac1ed2 ZJS |
3003 | return log_error_errno(r, "Failed to open '%s': %m", fn); |
3004 | } | |
a6d8474f | 3005 | log_debug("Reading config file \"%s\"…", fn); |
f7ac1ed2 | 3006 | f = _f; |
fba6e687 LP |
3007 | } |
3008 | ||
1731e34a LP |
3009 | FOREACH_LINE(line, f, break) { |
3010 | char *l; | |
fba6e687 | 3011 | int k; |
d9daae55 | 3012 | bool invalid_line = false; |
fba6e687 | 3013 | |
fba6e687 LP |
3014 | v++; |
3015 | ||
3016 | l = strstrip(line); | |
4c701096 | 3017 | if (IN_SET(*l, 0, '#')) |
fba6e687 LP |
3018 | continue; |
3019 | ||
d9daae55 ZJS |
3020 | k = parse_line(fn, v, l, &invalid_line); |
3021 | if (k < 0) { | |
3022 | if (invalid_line) | |
3023 | /* Allow reporting with a special code if the caller requested this */ | |
3024 | *invalid_config = true; | |
3025 | else if (r == 0) | |
3026 | /* The first error becomes our return value */ | |
3027 | r = k; | |
3028 | } | |
fba6e687 LP |
3029 | } |
3030 | ||
78a92a5a | 3031 | /* we have to determine age parameter for each entry of type X */ |
ef43a391 | 3032 | ORDERED_HASHMAP_FOREACH(i, globs, iterator) { |
78a92a5a MS |
3033 | Iterator iter; |
3034 | Item *j, *candidate_item = NULL; | |
3035 | ||
3036 | if (i->type != IGNORE_DIRECTORY_PATH) | |
3037 | continue; | |
3038 | ||
ef43a391 | 3039 | ORDERED_HASHMAP_FOREACH(j, items, iter) { |
5fb13eb5 | 3040 | if (!IN_SET(j->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA)) |
78a92a5a MS |
3041 | continue; |
3042 | ||
3043 | if (path_equal(j->path, i->path)) { | |
3044 | candidate_item = j; | |
3045 | break; | |
3046 | } | |
3047 | ||
3048 | if ((!candidate_item && path_startswith(i->path, j->path)) || | |
3049 | (candidate_item && path_startswith(j->path, candidate_item->path) && (fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0))) | |
3050 | candidate_item = j; | |
3051 | } | |
3052 | ||
9ed2a35e | 3053 | if (candidate_item && candidate_item->age_set) { |
78a92a5a MS |
3054 | i->age = candidate_item->age; |
3055 | i->age_set = true; | |
3056 | } | |
3057 | } | |
3058 | ||
fba6e687 | 3059 | if (ferror(f)) { |
56f64d95 | 3060 | log_error_errno(errno, "Failed to read from file %s: %m", fn); |
fba6e687 LP |
3061 | if (r == 0) |
3062 | r = -EIO; | |
3063 | } | |
3064 | ||
fba6e687 LP |
3065 | return r; |
3066 | } | |
3067 | ||
a6d8474f ZJS |
3068 | static int parse_arguments(char **config_dirs, char **args, bool *invalid_config) { |
3069 | char **arg; | |
3070 | int r; | |
3071 | ||
3072 | STRV_FOREACH(arg, args) { | |
3073 | r = read_config_file(config_dirs, *arg, false, invalid_config); | |
3074 | if (r < 0) | |
3075 | return r; | |
3076 | } | |
3077 | ||
3078 | return 0; | |
3079 | } | |
3080 | ||
3081 | static int read_config_files(char **config_dirs, char **args, bool *invalid_config) { | |
3082 | _cleanup_strv_free_ char **files = NULL; | |
3083 | _cleanup_free_ char *p = NULL; | |
3084 | char **f; | |
3085 | int r; | |
3086 | ||
ceaaeb9b | 3087 | r = conf_files_list_with_replacement(arg_root, config_dirs, arg_replace, &files, &p); |
a6d8474f | 3088 | if (r < 0) |
ceaaeb9b | 3089 | return r; |
a6d8474f ZJS |
3090 | |
3091 | STRV_FOREACH(f, files) | |
3092 | if (p && path_equal(*f, p)) { | |
3093 | log_debug("Parsing arguments at position \"%s\"…", *f); | |
3094 | ||
3095 | r = parse_arguments(config_dirs, args, invalid_config); | |
3096 | if (r < 0) | |
3097 | return r; | |
3098 | } else | |
3099 | /* Just warn, ignore result otherwise. | |
3100 | * read_config_file() has some debug output, so no need to print anything. */ | |
3101 | (void) read_config_file(config_dirs, *f, true, invalid_config); | |
3102 | ||
3103 | return 0; | |
3104 | } | |
3105 | ||
5008d581 | 3106 | int main(int argc, char *argv[]) { |
bb9947be | 3107 | int r, k, r_process = 0; |
3f93da98 | 3108 | ItemArray *a; |
3b63d2d3 | 3109 | Iterator iterator; |
f2b5ca0e | 3110 | _cleanup_strv_free_ char **config_dirs = NULL; |
d9daae55 | 3111 | bool invalid_config = false; |
3b63d2d3 | 3112 | |
fdcad0c2 LP |
3113 | r = parse_argv(argc, argv); |
3114 | if (r <= 0) | |
753615e8 | 3115 | goto finish; |
5008d581 | 3116 | |
eb0ca9eb | 3117 | log_set_target(LOG_TARGET_AUTO); |
5008d581 LP |
3118 | log_parse_environment(); |
3119 | log_open(); | |
3120 | ||
f2b5ca0e ZJS |
3121 | if (arg_user) { |
3122 | r = user_config_paths(&config_dirs); | |
3123 | if (r < 0) { | |
3124 | log_error_errno(r, "Failed to initialize configuration directory list: %m"); | |
3125 | goto finish; | |
3126 | } | |
3127 | } else { | |
3128 | config_dirs = strv_split_nulstr(CONF_PATHS_NULSTR("tmpfiles.d")); | |
3129 | if (!config_dirs) { | |
3130 | r = log_oom(); | |
3131 | goto finish; | |
3132 | } | |
3133 | } | |
3134 | ||
79c91cec | 3135 | if (DEBUG_LOGGING) { |
f2b5ca0e ZJS |
3136 | _cleanup_free_ char *t = NULL; |
3137 | ||
3138 | t = strv_join(config_dirs, "\n\t"); | |
3139 | if (t) | |
bb9947be | 3140 | log_debug("Looking for configuration files in (higher priority first):\n\t%s", t); |
f2b5ca0e ZJS |
3141 | } |
3142 | ||
ceaaeb9b | 3143 | if (arg_cat_config) { |
dcd5c891 LP |
3144 | (void) pager_open(arg_no_pager, false); |
3145 | ||
ceaaeb9b ZJS |
3146 | r = cat_config(config_dirs, argv + optind); |
3147 | goto finish; | |
3148 | } | |
3149 | ||
3150 | umask(0022); | |
3151 | ||
3152 | mac_selinux_init(); | |
3153 | ||
3154 | items = ordered_hashmap_new(&string_hash_ops); | |
3155 | globs = ordered_hashmap_new(&string_hash_ops); | |
3156 | ||
3157 | if (!items || !globs) { | |
3158 | r = log_oom(); | |
3159 | goto finish; | |
3160 | } | |
3161 | ||
a6d8474f ZJS |
3162 | /* If command line arguments are specified along with --replace, read all |
3163 | * configuration files and insert the positional arguments at the specified | |
3164 | * place. Otherwise, if command line arguments are specified, execute just | |
3165 | * them, and finally, without --replace= or any positional arguments, just | |
3166 | * read configuration and execute it. | |
3167 | */ | |
3168 | if (arg_replace || optind >= argc) | |
3169 | r = read_config_files(config_dirs, argv + optind, &invalid_config); | |
3170 | else | |
3171 | r = parse_arguments(config_dirs, argv + optind, &invalid_config); | |
3172 | if (r < 0) | |
3173 | goto finish; | |
5008d581 | 3174 | |
17493fa5 LP |
3175 | /* The non-globbing ones usually create things, hence we apply |
3176 | * them first */ | |
ef43a391 | 3177 | ORDERED_HASHMAP_FOREACH(a, items, iterator) { |
3f93da98 | 3178 | k = process_item_array(a); |
bb9947be ZJS |
3179 | if (k < 0 && r_process == 0) |
3180 | r_process = k; | |
1db50423 | 3181 | } |
b8bb3e8f | 3182 | |
17493fa5 LP |
3183 | /* The globbing ones usually alter things, hence we apply them |
3184 | * second. */ | |
ef43a391 | 3185 | ORDERED_HASHMAP_FOREACH(a, globs, iterator) { |
3f93da98 | 3186 | k = process_item_array(a); |
bb9947be ZJS |
3187 | if (k < 0 && r_process == 0) |
3188 | r_process = k; | |
1db50423 | 3189 | } |
3b63d2d3 | 3190 | |
5008d581 | 3191 | finish: |
dcd5c891 LP |
3192 | pager_close(); |
3193 | ||
224b0e7a ZJS |
3194 | ordered_hashmap_free_with_destructor(items, item_array_free); |
3195 | ordered_hashmap_free_with_destructor(globs, item_array_free); | |
5008d581 | 3196 | |
7bc040fa LP |
3197 | free(arg_include_prefixes); |
3198 | free(arg_exclude_prefixes); | |
cf9a4abd | 3199 | free(arg_root); |
a2aced4a | 3200 | |
17b90525 LP |
3201 | set_free_free(unix_sockets); |
3202 | ||
cc56fafe | 3203 | mac_selinux_finish(); |
29003cff | 3204 | |
bb9947be | 3205 | if (r < 0 || ERRNO_IS_RESOURCE(-r_process)) |
d9daae55 ZJS |
3206 | return EXIT_FAILURE; |
3207 | else if (invalid_config) | |
3208 | return EX_DATAERR; | |
bb9947be ZJS |
3209 | else if (r_process < 0) |
3210 | return EX_CANTCREAT; | |
d9daae55 ZJS |
3211 | else |
3212 | return EXIT_SUCCESS; | |
5008d581 | 3213 | } |