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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
5008d581 | 2 | |
5008d581 | 3 | #include <errno.h> |
3f6fd1ba LP |
4 | #include <fcntl.h> |
5 | #include <fnmatch.h> | |
6 | #include <getopt.h> | |
5008d581 | 7 | #include <limits.h> |
3f6fd1ba LP |
8 | #include <linux/fs.h> |
9 | #include <stdbool.h> | |
10 | #include <stddef.h> | |
3b63d2d3 | 11 | #include <stdlib.h> |
52b32b2a | 12 | #include <sys/file.h> |
ebf4e801 | 13 | #include <sys/xattr.h> |
d9daae55 | 14 | #include <sysexits.h> |
3f6fd1ba LP |
15 | #include <time.h> |
16 | #include <unistd.h> | |
5008d581 | 17 | |
5a8575ef ZJS |
18 | #include "sd-path.h" |
19 | ||
3f6fd1ba | 20 | #include "acl-util.h" |
b5efdb8a | 21 | #include "alloc-util.h" |
3f6fd1ba | 22 | #include "btrfs-util.h" |
d6b4d1c7 | 23 | #include "build.h" |
430f0182 | 24 | #include "capability-util.h" |
f461a28d | 25 | #include "chase.h" |
c8b3094d | 26 | #include "chattr-util.h" |
3f6fd1ba | 27 | #include "conf-files.h" |
28db6fbf | 28 | #include "constants.h" |
3f6fd1ba | 29 | #include "copy.h" |
1d77721f | 30 | #include "creds-util.h" |
7176f06c | 31 | #include "devnum-util.h" |
8fb3f009 | 32 | #include "dirent-util.h" |
63d3d0a5 | 33 | #include "dissect-image.h" |
4368c60c | 34 | #include "env-util.h" |
8f6fb95c | 35 | #include "errno-util.h" |
4f5dd394 | 36 | #include "escape.h" |
3ffd4af2 | 37 | #include "fd-util.h" |
0d39fa9c | 38 | #include "fileio.h" |
f97b34a6 | 39 | #include "format-util.h" |
f4f15635 | 40 | #include "fs-util.h" |
7d50b32a | 41 | #include "glob-util.h" |
708daf42 | 42 | #include "hexdecoct.h" |
c004493c | 43 | #include "io-util.h" |
0690160e | 44 | #include "label-util.h" |
5008d581 | 45 | #include "log.h" |
54693d9b | 46 | #include "macro.h" |
87938c3b | 47 | #include "main-func.h" |
ddb439b8 | 48 | #include "missing_syscall.h" |
35cd0ba5 | 49 | #include "mkdir-label.h" |
63d3d0a5 | 50 | #include "mount-util.h" |
049af8ad | 51 | #include "mountpoint-util.h" |
08af3cc5 | 52 | #include "nulstr-util.h" |
a3451c2c | 53 | #include "offline-passwd.h" |
dcd5c891 | 54 | #include "pager.h" |
614b022c | 55 | #include "parse-argument.h" |
6bedfcbb | 56 | #include "parse-util.h" |
f2b5ca0e | 57 | #include "path-lookup.h" |
9eb977db | 58 | #include "path-util.h" |
294bf0c3 | 59 | #include "pretty-print.h" |
e5358401 | 60 | #include "rlimit-util.h" |
c6878637 | 61 | #include "rm-rf.h" |
d7b8eec7 | 62 | #include "selinux-util.h" |
3f6fd1ba | 63 | #include "set.h" |
760877e9 | 64 | #include "sort-util.h" |
3f6fd1ba | 65 | #include "specifier.h" |
41fea218 | 66 | #include "stat-util.h" |
15a5e950 | 67 | #include "stdio-util.h" |
8b43440b | 68 | #include "string-table.h" |
07630cea | 69 | #include "string-util.h" |
3f6fd1ba | 70 | #include "strv.h" |
3f532a59 | 71 | #include "terminal-util.h" |
affb60b1 | 72 | #include "umask-util.h" |
b1d4f8e1 | 73 | #include "user-util.h" |
1401882f | 74 | #include "virt.h" |
5008d581 | 75 | |
01000479 | 76 | /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates |
5008d581 | 77 | * them in the file system. This is intended to be used to create |
db019b8d KS |
78 | * properly owned directories beneath /tmp, /var/tmp, /run, which are |
79 | * volatile and hence need to be recreated on bootup. */ | |
5008d581 | 80 | |
1a967b6b LP |
81 | typedef enum OperationMask { |
82 | OPERATION_CREATE = 1 << 0, | |
83 | OPERATION_REMOVE = 1 << 1, | |
84 | OPERATION_CLEAN = 1 << 2, | |
81a18380 | 85 | OPERATION_PURGE = 1 << 3, |
1a967b6b LP |
86 | } OperationMask; |
87 | ||
66ccd038 | 88 | typedef enum ItemType { |
b8bb3e8f | 89 | /* These ones take file names */ |
2223a025 ZJS |
90 | CREATE_FILE = 'f', |
91 | TRUNCATE_FILE = 'F', /* deprecated: use f+ */ | |
92 | CREATE_DIRECTORY = 'd', | |
93 | TRUNCATE_DIRECTORY = 'D', | |
94 | CREATE_SUBVOLUME = 'v', | |
5fb13eb5 | 95 | CREATE_SUBVOLUME_INHERIT_QUOTA = 'q', |
2223a025 ZJS |
96 | CREATE_SUBVOLUME_NEW_QUOTA = 'Q', |
97 | CREATE_FIFO = 'p', | |
98 | CREATE_SYMLINK = 'L', | |
99 | CREATE_CHAR_DEVICE = 'c', | |
100 | CREATE_BLOCK_DEVICE = 'b', | |
101 | COPY_FILES = 'C', | |
b8bb3e8f LP |
102 | |
103 | /* These ones take globs */ | |
2223a025 ZJS |
104 | WRITE_FILE = 'w', |
105 | EMPTY_DIRECTORY = 'e', | |
106 | SET_XATTR = 't', | |
107 | RECURSIVE_SET_XATTR = 'T', | |
108 | SET_ACL = 'a', | |
109 | RECURSIVE_SET_ACL = 'A', | |
110 | SET_ATTRIBUTE = 'h', | |
111 | RECURSIVE_SET_ATTRIBUTE = 'H', | |
112 | IGNORE_PATH = 'x', | |
113 | IGNORE_DIRECTORY_PATH = 'X', | |
114 | REMOVE_PATH = 'r', | |
115 | RECURSIVE_REMOVE_PATH = 'R', | |
116 | RELABEL_PATH = 'z', | |
117 | RECURSIVE_RELABEL_PATH = 'Z', | |
118 | ADJUST_MODE = 'm', /* legacy, 'z' is identical to this */ | |
66ccd038 | 119 | } ItemType; |
3b63d2d3 | 120 | |
7f7a50dd SK |
121 | typedef enum AgeBy { |
122 | AGE_BY_ATIME = 1 << 0, | |
123 | AGE_BY_BTIME = 1 << 1, | |
124 | AGE_BY_CTIME = 1 << 2, | |
125 | AGE_BY_MTIME = 1 << 3, | |
126 | ||
127 | /* All file timestamp types are checked by default. */ | |
128 | AGE_BY_DEFAULT_FILE = AGE_BY_ATIME | AGE_BY_BTIME | AGE_BY_CTIME | AGE_BY_MTIME, | |
2223a025 | 129 | AGE_BY_DEFAULT_DIR = AGE_BY_ATIME | AGE_BY_BTIME | AGE_BY_MTIME, |
7f7a50dd SK |
130 | } AgeBy; |
131 | ||
3b63d2d3 | 132 | typedef struct Item { |
66ccd038 | 133 | ItemType type; |
3b63d2d3 LP |
134 | |
135 | char *path; | |
468d726b | 136 | char *argument; |
708daf42 LP |
137 | void *binary_argument; /* set if binary data, in which case it takes precedence over 'argument' */ |
138 | size_t binary_argument_size; | |
ebf4e801 | 139 | char **xattrs; |
349cc4a5 | 140 | #if HAVE_ACL |
f8eeeaf9 | 141 | acl_t acl_access; |
26d98cdd | 142 | acl_t acl_access_exec; |
f8eeeaf9 ZJS |
143 | acl_t acl_default; |
144 | #endif | |
5008d581 LP |
145 | uid_t uid; |
146 | gid_t gid; | |
3b63d2d3 LP |
147 | mode_t mode; |
148 | usec_t age; | |
7f7a50dd | 149 | AgeBy age_by_file, age_by_dir; |
3b63d2d3 | 150 | |
468d726b | 151 | dev_t major_minor; |
88ec4dfa LP |
152 | unsigned attribute_value; |
153 | unsigned attribute_mask; | |
468d726b | 154 | |
3b63d2d3 LP |
155 | bool uid_set:1; |
156 | bool gid_set:1; | |
157 | bool mode_set:1; | |
cc43328c LP |
158 | bool uid_only_create:1; |
159 | bool gid_only_create:1; | |
160 | bool mode_only_create:1; | |
3b63d2d3 | 161 | bool age_set:1; |
abef3f91 | 162 | bool mask_perms:1; |
88ec4dfa | 163 | bool attribute_set:1; |
24f3a374 LP |
164 | |
165 | bool keep_first_level:1; | |
1910cd0e | 166 | |
c55ac248 | 167 | bool append_or_force:1; |
2e78fa79 | 168 | |
6d7b5433 WD |
169 | bool allow_failure:1; |
170 | ||
c46c3233 AW |
171 | bool try_replace:1; |
172 | ||
811a1587 | 173 | OperationMask done; |
3b63d2d3 LP |
174 | } Item; |
175 | ||
3f93da98 ZJS |
176 | typedef struct ItemArray { |
177 | Item *items; | |
96d10d78 | 178 | size_t n_items; |
811a1587 LP |
179 | |
180 | struct ItemArray *parent; | |
181 | Set *children; | |
3f93da98 ZJS |
182 | } ItemArray; |
183 | ||
5a8575ef | 184 | typedef enum DirectoryType { |
133bbca4 | 185 | DIRECTORY_RUNTIME, |
5a8575ef ZJS |
186 | DIRECTORY_STATE, |
187 | DIRECTORY_CACHE, | |
188 | DIRECTORY_LOGS, | |
189 | _DIRECTORY_TYPE_MAX, | |
190 | } DirectoryType; | |
191 | ||
a9bc518c LP |
192 | typedef enum { |
193 | CREATION_NORMAL, | |
194 | CREATION_EXISTING, | |
195 | CREATION_FORCE, | |
196 | _CREATION_MODE_MAX, | |
197 | _CREATION_MODE_INVALID = -EINVAL, | |
198 | } CreationMode; | |
199 | ||
1be6a5db | 200 | static CatFlags arg_cat_flags = CAT_CONFIG_OFF; |
9e90d4f4 | 201 | static bool arg_dry_run = false; |
4870133b | 202 | static RuntimeScope arg_runtime_scope = RUNTIME_SCOPE_SYSTEM; |
1a967b6b | 203 | static OperationMask arg_operation = 0; |
81815651 | 204 | static bool arg_boot = false; |
e0ea6af3 | 205 | static bool arg_graceful = false; |
0221d68a | 206 | static PagerFlags arg_pager_flags = 0; |
3b63d2d3 | 207 | |
7bc040fa LP |
208 | static char **arg_include_prefixes = NULL; |
209 | static char **arg_exclude_prefixes = NULL; | |
cf9a4abd | 210 | static char *arg_root = NULL; |
63d3d0a5 | 211 | static char *arg_image = NULL; |
a6d8474f | 212 | static char *arg_replace = NULL; |
84be0c71 | 213 | static ImagePolicy *arg_image_policy = NULL; |
fba6e687 | 214 | |
3b63d2d3 LP |
215 | #define MAX_DEPTH 256 |
216 | ||
a5e4f3ab | 217 | typedef struct Context { |
376d0495 ZJS |
218 | OrderedHashmap *items; |
219 | OrderedHashmap *globs; | |
a5e4f3ab | 220 | Set *unix_sockets; |
376d0495 ZJS |
221 | Hashmap *uid_cache; |
222 | Hashmap *gid_cache; | |
a5e4f3ab | 223 | } Context; |
7bc040fa | 224 | |
7f13af72 AAF |
225 | STATIC_DESTRUCTOR_REGISTER(arg_include_prefixes, strv_freep); |
226 | STATIC_DESTRUCTOR_REGISTER(arg_exclude_prefixes, strv_freep); | |
87938c3b | 227 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); |
63d3d0a5 | 228 | STATIC_DESTRUCTOR_REGISTER(arg_image, freep); |
84be0c71 | 229 | STATIC_DESTRUCTOR_REGISTER(arg_image_policy, image_policy_freep); |
87938c3b | 230 | |
a9bc518c LP |
231 | static const char *const creation_mode_verb_table[_CREATION_MODE_MAX] = { |
232 | [CREATION_NORMAL] = "Created", | |
233 | [CREATION_EXISTING] = "Found existing", | |
234 | [CREATION_FORCE] = "Created replacement", | |
235 | }; | |
236 | ||
237 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb, CreationMode); | |
238 | ||
a5e4f3ab LP |
239 | static void context_done(Context *c) { |
240 | assert(c); | |
241 | ||
242 | ordered_hashmap_free(c->items); | |
243 | ordered_hashmap_free(c->globs); | |
244 | ||
245 | set_free(c->unix_sockets); | |
376d0495 ZJS |
246 | |
247 | hashmap_free(c->uid_cache); | |
248 | hashmap_free(c->gid_cache); | |
a5e4f3ab LP |
249 | } |
250 | ||
6db98098 | 251 | /* Different kinds of errors that mean that information is not available in the environment. */ |
cf1ab844 | 252 | static bool ERRNO_IS_NOINFO(int r) { |
6db98098 ZJS |
253 | return IN_SET(abs(r), |
254 | EUNATCH, /* os-release or machine-id missing */ | |
255 | ENOMEDIUM, /* machine-id or another file empty */ | |
5dd814d7 | 256 | ENOPKG, /* machine-id is uninitialized */ |
6db98098 | 257 | ENXIO); /* env var is unset */ |
4cef1923 FB |
258 | } |
259 | ||
5ac41a16 ZJS |
260 | static int specifier_directory( |
261 | char specifier, | |
262 | const void *data, | |
263 | const char *root, | |
264 | const void *userdata, | |
265 | char **ret) { | |
266 | ||
5a8575ef ZJS |
267 | struct table_entry { |
268 | uint64_t type; | |
269 | const char *suffix; | |
270 | }; | |
271 | ||
272 | static const struct table_entry paths_system[] = { | |
273 | [DIRECTORY_RUNTIME] = { SD_PATH_SYSTEM_RUNTIME }, | |
274 | [DIRECTORY_STATE] = { SD_PATH_SYSTEM_STATE_PRIVATE }, | |
275 | [DIRECTORY_CACHE] = { SD_PATH_SYSTEM_STATE_CACHE }, | |
276 | [DIRECTORY_LOGS] = { SD_PATH_SYSTEM_STATE_LOGS }, | |
277 | }; | |
278 | ||
279 | static const struct table_entry paths_user[] = { | |
280 | [DIRECTORY_RUNTIME] = { SD_PATH_USER_RUNTIME }, | |
b50aadaf | 281 | [DIRECTORY_STATE] = { SD_PATH_USER_STATE_PRIVATE }, |
5a8575ef | 282 | [DIRECTORY_CACHE] = { SD_PATH_USER_STATE_CACHE }, |
b50aadaf | 283 | [DIRECTORY_LOGS] = { SD_PATH_USER_STATE_PRIVATE, "log" }, |
5a8575ef ZJS |
284 | }; |
285 | ||
5a8575ef | 286 | const struct table_entry *paths; |
de61a04b LP |
287 | _cleanup_free_ char *p = NULL; |
288 | unsigned i; | |
289 | int r; | |
5a8575ef ZJS |
290 | |
291 | assert_cc(ELEMENTSOF(paths_system) == ELEMENTSOF(paths_user)); | |
4870133b | 292 | paths = arg_runtime_scope == RUNTIME_SCOPE_USER ? paths_user : paths_system; |
5a8575ef ZJS |
293 | |
294 | i = PTR_TO_UINT(data); | |
295 | assert(i < ELEMENTSOF(paths_system)); | |
296 | ||
de61a04b LP |
297 | r = sd_path_lookup(paths[i].type, paths[i].suffix, &p); |
298 | if (r < 0) | |
299 | return r; | |
300 | ||
301 | if (arg_root) { | |
302 | _cleanup_free_ char *j = NULL; | |
303 | ||
304 | j = path_join(arg_root, p); | |
305 | if (!j) | |
306 | return -ENOMEM; | |
307 | ||
308 | *ret = TAKE_PTR(j); | |
309 | } else | |
310 | *ret = TAKE_PTR(p); | |
311 | ||
312 | return 0; | |
5a8575ef ZJS |
313 | } |
314 | ||
4cef1923 FB |
315 | static int log_unresolvable_specifier(const char *filename, unsigned line) { |
316 | static bool notified = false; | |
317 | ||
1401882f ZJS |
318 | /* In system mode, this is called when /etc is not fully initialized and some specifiers are |
319 | * unresolvable. In user mode, this is called when some variables are not defined. These cases are | |
320 | * not considered a fatal error, so log at LOG_NOTICE only for the first time and then downgrade this | |
321 | * to LOG_DEBUG for the rest. | |
322 | * | |
323 | * If we're running in a chroot (--root was used or sd_booted() reports that systemd is not running), | |
324 | * always use LOG_DEBUG. We may be called to initialize a chroot before booting and there is no | |
325 | * expectation that machine-id and other files will be populated. | |
326 | */ | |
327 | ||
328 | int log_level = notified || arg_root || running_in_chroot() > 0 ? | |
329 | LOG_DEBUG : LOG_NOTICE; | |
4cef1923 | 330 | |
d02933fd | 331 | log_syntax(NULL, |
1401882f | 332 | log_level, |
d02933fd | 333 | filename, line, 0, |
1401882f | 334 | "Failed to resolve specifier: %s, skipping.", |
4870133b | 335 | arg_runtime_scope == RUNTIME_SCOPE_USER ? "Required $XDG_... variable not defined" : "uninitialized /etc/ detected"); |
4cef1923 FB |
336 | |
337 | if (!notified) | |
1401882f ZJS |
338 | log_full(log_level, |
339 | "All rules containing unresolvable specifiers will be skipped."); | |
4cef1923 FB |
340 | |
341 | notified = true; | |
342 | return 0; | |
343 | } | |
344 | ||
9e90d4f4 ZJS |
345 | #define log_action(would, doing, fmt, ...) \ |
346 | log_full(arg_dry_run ? LOG_INFO : LOG_DEBUG, \ | |
347 | fmt, \ | |
348 | arg_dry_run ? (would) : (doing), \ | |
349 | __VA_ARGS__) | |
350 | ||
f2b5ca0e ZJS |
351 | static int user_config_paths(char*** ret) { |
352 | _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL; | |
353 | _cleanup_free_ char *persistent_config = NULL, *runtime_config = NULL, *data_home = NULL; | |
354 | _cleanup_strv_free_ char **res = NULL; | |
355 | int r; | |
356 | ||
357 | r = xdg_user_dirs(&config_dirs, &data_dirs); | |
358 | if (r < 0) | |
359 | return r; | |
360 | ||
361 | r = xdg_user_config_dir(&persistent_config, "/user-tmpfiles.d"); | |
6db98098 | 362 | if (r < 0 && !ERRNO_IS_NOINFO(r)) |
f2b5ca0e ZJS |
363 | return r; |
364 | ||
365 | r = xdg_user_runtime_dir(&runtime_config, "/user-tmpfiles.d"); | |
6db98098 | 366 | if (r < 0 && !ERRNO_IS_NOINFO(r)) |
f2b5ca0e ZJS |
367 | return r; |
368 | ||
369 | r = xdg_user_data_dir(&data_home, "/user-tmpfiles.d"); | |
6db98098 | 370 | if (r < 0 && !ERRNO_IS_NOINFO(r)) |
f2b5ca0e ZJS |
371 | return r; |
372 | ||
373 | r = strv_extend_strv_concat(&res, config_dirs, "/user-tmpfiles.d"); | |
374 | if (r < 0) | |
375 | return r; | |
376 | ||
69f3c619 LP |
377 | r = strv_extend_many( |
378 | &res, | |
379 | persistent_config, | |
380 | runtime_config, | |
381 | data_home); | |
f2b5ca0e ZJS |
382 | if (r < 0) |
383 | return r; | |
384 | ||
385 | r = strv_extend_strv_concat(&res, data_dirs, "/user-tmpfiles.d"); | |
386 | if (r < 0) | |
387 | return r; | |
388 | ||
389 | r = path_strv_make_absolute_cwd(res); | |
390 | if (r < 0) | |
391 | return r; | |
392 | ||
ae2a15bc | 393 | *ret = TAKE_PTR(res); |
f2b5ca0e ZJS |
394 | return 0; |
395 | } | |
396 | ||
81a18380 LB |
397 | static bool needs_purge(ItemType t) { |
398 | return IN_SET(t, | |
399 | COPY_FILES, | |
400 | TRUNCATE_FILE, | |
401 | CREATE_FILE, | |
402 | WRITE_FILE, | |
403 | EMPTY_DIRECTORY, | |
404 | CREATE_SUBVOLUME, | |
405 | CREATE_SUBVOLUME_INHERIT_QUOTA, | |
406 | CREATE_SUBVOLUME_NEW_QUOTA, | |
407 | CREATE_CHAR_DEVICE, | |
408 | CREATE_BLOCK_DEVICE, | |
409 | CREATE_SYMLINK, | |
410 | CREATE_FIFO, | |
411 | CREATE_DIRECTORY, | |
412 | TRUNCATE_DIRECTORY); | |
413 | } | |
414 | ||
66ccd038 | 415 | static bool needs_glob(ItemType t) { |
cde684a2 LP |
416 | return IN_SET(t, |
417 | WRITE_FILE, | |
df8dee85 | 418 | EMPTY_DIRECTORY, |
b705ab6a ZJS |
419 | SET_XATTR, |
420 | RECURSIVE_SET_XATTR, | |
421 | SET_ACL, | |
34f64536 LP |
422 | RECURSIVE_SET_ACL, |
423 | SET_ATTRIBUTE, | |
d88b65f6 LP |
424 | RECURSIVE_SET_ATTRIBUTE, |
425 | IGNORE_PATH, | |
426 | IGNORE_DIRECTORY_PATH, | |
427 | REMOVE_PATH, | |
428 | RECURSIVE_REMOVE_PATH, | |
429 | RELABEL_PATH, | |
430 | RECURSIVE_RELABEL_PATH, | |
431 | ADJUST_MODE); | |
b8bb3e8f LP |
432 | } |
433 | ||
3f93da98 ZJS |
434 | static bool takes_ownership(ItemType t) { |
435 | return IN_SET(t, | |
436 | CREATE_FILE, | |
437 | TRUNCATE_FILE, | |
438 | CREATE_DIRECTORY, | |
439 | TRUNCATE_DIRECTORY, | |
440 | CREATE_SUBVOLUME, | |
5fb13eb5 LP |
441 | CREATE_SUBVOLUME_INHERIT_QUOTA, |
442 | CREATE_SUBVOLUME_NEW_QUOTA, | |
3f93da98 ZJS |
443 | CREATE_FIFO, |
444 | CREATE_SYMLINK, | |
445 | CREATE_CHAR_DEVICE, | |
446 | CREATE_BLOCK_DEVICE, | |
447 | COPY_FILES, | |
3f93da98 | 448 | WRITE_FILE, |
d88b65f6 | 449 | EMPTY_DIRECTORY, |
3f93da98 ZJS |
450 | IGNORE_PATH, |
451 | IGNORE_DIRECTORY_PATH, | |
452 | REMOVE_PATH, | |
453 | RECURSIVE_REMOVE_PATH); | |
454 | } | |
455 | ||
ef43a391 | 456 | static struct Item* find_glob(OrderedHashmap *h, const char *match) { |
3f93da98 | 457 | ItemArray *j; |
b8bb3e8f | 458 | |
e5876c29 ZJS |
459 | ORDERED_HASHMAP_FOREACH(j, h) |
460 | FOREACH_ARRAY(item, j->items, j->n_items) | |
3f93da98 ZJS |
461 | if (fnmatch(item->path, match, FNM_PATHNAME|FNM_PERIOD) == 0) |
462 | return item; | |
b8bb3e8f LP |
463 | return NULL; |
464 | } | |
465 | ||
a5e4f3ab | 466 | static int load_unix_sockets(Context *c) { |
fe2f05b7 | 467 | _cleanup_set_free_ Set *sockets = NULL; |
7fd1b19b | 468 | _cleanup_fclose_ FILE *f = NULL; |
f1ff734f | 469 | int r; |
17b90525 | 470 | |
a5e4f3ab | 471 | if (c->unix_sockets) |
71a0be76 | 472 | return 0; |
17b90525 | 473 | |
f1ff734f | 474 | /* We maintain a cache of the sockets we found in /proc/net/unix to speed things up a little. */ |
17b90525 | 475 | |
fdcad0c2 | 476 | f = fopen("/proc/net/unix", "re"); |
71a0be76 YW |
477 | if (!f) |
478 | return log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_WARNING, errno, | |
479 | "Failed to open /proc/net/unix, ignoring: %m"); | |
17b90525 | 480 | |
fdcad0c2 | 481 | /* Skip header */ |
f1ff734f | 482 | r = read_line(f, LONG_LINE_MAX, NULL); |
71a0be76 YW |
483 | if (r < 0) |
484 | return log_warning_errno(r, "Failed to skip /proc/net/unix header line: %m"); | |
485 | if (r == 0) | |
486 | return log_warning_errno(SYNTHETIC_ERRNO(EIO), "Premature end of file reading /proc/net/unix."); | |
17b90525 LP |
487 | |
488 | for (;;) { | |
fe2f05b7 | 489 | _cleanup_free_ char *line = NULL; |
71a0be76 | 490 | char *p; |
17b90525 | 491 | |
f1ff734f | 492 | r = read_line(f, LONG_LINE_MAX, &line); |
71a0be76 YW |
493 | if (r < 0) |
494 | return log_warning_errno(r, "Failed to read /proc/net/unix line, ignoring: %m"); | |
f1ff734f | 495 | if (r == 0) /* EOF */ |
17b90525 LP |
496 | break; |
497 | ||
fdcad0c2 LP |
498 | p = strchr(line, ':'); |
499 | if (!p) | |
500 | continue; | |
501 | ||
502 | if (strlen(p) < 37) | |
17b90525 LP |
503 | continue; |
504 | ||
fdcad0c2 | 505 | p += 37; |
17b90525 | 506 | p += strspn(p, WHITESPACE); |
fdcad0c2 | 507 | p += strcspn(p, WHITESPACE); /* skip one more word */ |
17b90525 LP |
508 | p += strspn(p, WHITESPACE); |
509 | ||
fe2f05b7 | 510 | if (!path_is_absolute(p)) |
17b90525 LP |
511 | continue; |
512 | ||
fe2f05b7 | 513 | r = set_put_strdup_full(&sockets, &path_hash_ops_free, p); |
71a0be76 YW |
514 | if (r < 0) |
515 | return log_warning_errno(r, "Failed to add AF_UNIX socket to set, ignoring: %m"); | |
71a0be76 | 516 | } |
17b90525 | 517 | |
a5e4f3ab | 518 | c->unix_sockets = TAKE_PTR(sockets); |
71a0be76 | 519 | return 1; |
17b90525 LP |
520 | } |
521 | ||
a5e4f3ab LP |
522 | static bool unix_socket_alive(Context *c, const char *fn) { |
523 | assert(c); | |
17b90525 LP |
524 | assert(fn); |
525 | ||
a5e4f3ab | 526 | if (load_unix_sockets(c) < 0) |
71a0be76 | 527 | return true; /* We don't know, so assume yes */ |
17b90525 | 528 | |
a5e4f3ab | 529 | return set_contains(c->unix_sockets, fn); |
17b90525 LP |
530 | } |
531 | ||
708daf42 LP |
532 | /* Accessors for the argument in binary format */ |
533 | static const void* item_binary_argument(const Item *i) { | |
534 | assert(i); | |
535 | return i->binary_argument ?: i->argument; | |
536 | } | |
537 | ||
538 | static size_t item_binary_argument_size(const Item *i) { | |
539 | assert(i); | |
540 | return i->binary_argument ? i->binary_argument_size : strlen_ptr(i->argument); | |
541 | } | |
542 | ||
df99a9ef ZJS |
543 | static DIR* xopendirat_nomod(int dirfd, const char *path) { |
544 | DIR *dir; | |
545 | ||
546 | dir = xopendirat(dirfd, path, O_NOFOLLOW|O_NOATIME); | |
1532227a LP |
547 | if (dir) |
548 | return dir; | |
549 | ||
08c25eee DDM |
550 | if (!IN_SET(errno, ENOENT, ELOOP)) |
551 | log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); | |
552 | ||
1532227a LP |
553 | if (errno != EPERM) |
554 | return NULL; | |
555 | ||
556 | dir = xopendirat(dirfd, path, O_NOFOLLOW); | |
557 | if (!dir) | |
558 | log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); | |
df99a9ef ZJS |
559 | |
560 | return dir; | |
561 | } | |
562 | ||
563 | static DIR* opendir_nomod(const char *path) { | |
564 | return xopendirat_nomod(AT_FDCWD, path); | |
565 | } | |
566 | ||
7eeda1da ZJS |
567 | static int opendir_and_stat( |
568 | const char *path, | |
569 | DIR **ret, | |
570 | struct statx *ret_sx, | |
571 | bool *ret_mountpoint) { | |
572 | ||
573 | _cleanup_closedir_ DIR *d = NULL; | |
574 | STRUCT_STATX_DEFINE(sx); | |
575 | int r; | |
576 | ||
577 | assert(path); | |
578 | assert(ret); | |
579 | assert(ret_sx); | |
580 | assert(ret_mountpoint); | |
581 | ||
582 | /* Do opendir() and statx() on the directory. | |
583 | * Return 1 if successful, 0 if file doesn't exist or is not a directory, | |
584 | * negative errno otherwise. | |
585 | */ | |
586 | ||
587 | d = opendir_nomod(path); | |
588 | if (!d) { | |
589 | bool ignore = IN_SET(errno, ENOENT, ENOTDIR); | |
590 | r = log_full_errno(ignore ? LOG_DEBUG : LOG_ERR, | |
591 | errno, "Failed to open directory %s: %m", path); | |
592 | if (!ignore) | |
593 | return r; | |
594 | ||
595 | *ret = NULL; | |
596 | *ret_sx = (struct statx) {}; | |
597 | *ret_mountpoint = NULL; | |
598 | return 0; | |
599 | } | |
600 | ||
601 | r = statx_fallback(dirfd(d), "", AT_EMPTY_PATH, STATX_MODE|STATX_INO|STATX_ATIME|STATX_MTIME, &sx); | |
602 | if (r < 0) | |
603 | return log_error_errno(r, "statx(%s) failed: %m", path); | |
604 | ||
605 | if (FLAGS_SET(sx.stx_attributes_mask, STATX_ATTR_MOUNT_ROOT)) | |
606 | *ret_mountpoint = FLAGS_SET(sx.stx_attributes, STATX_ATTR_MOUNT_ROOT); | |
607 | else { | |
608 | struct stat ps; | |
609 | ||
610 | if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) | |
611 | return log_error_errno(errno, "stat(%s/..) failed: %m", path); | |
612 | ||
613 | *ret_mountpoint = | |
614 | sx.stx_dev_major != major(ps.st_dev) || | |
615 | sx.stx_dev_minor != minor(ps.st_dev) || | |
616 | sx.stx_ino != ps.st_ino; | |
617 | } | |
618 | ||
619 | *ret = TAKE_PTR(d); | |
620 | *ret_sx = sx; | |
621 | return 1; | |
622 | } | |
623 | ||
7f7a50dd SK |
624 | static bool needs_cleanup( |
625 | nsec_t atime, | |
626 | nsec_t btime, | |
627 | nsec_t ctime, | |
628 | nsec_t mtime, | |
629 | nsec_t cutoff, | |
630 | const char *sub_path, | |
631 | AgeBy age_by, | |
632 | bool is_dir) { | |
633 | ||
634 | if (FLAGS_SET(age_by, AGE_BY_MTIME) && mtime != NSEC_INFINITY && mtime >= cutoff) { | |
7f7a50dd SK |
635 | /* Follows spelling in stat(1). */ |
636 | log_debug("%s \"%s\": modify time %s is too new.", | |
637 | is_dir ? "Directory" : "File", | |
638 | sub_path, | |
0086ef19 | 639 | FORMAT_TIMESTAMP_STYLE(mtime / NSEC_PER_USEC, TIMESTAMP_US)); |
7f7a50dd SK |
640 | |
641 | return false; | |
642 | } | |
643 | ||
644 | if (FLAGS_SET(age_by, AGE_BY_ATIME) && atime != NSEC_INFINITY && atime >= cutoff) { | |
7f7a50dd SK |
645 | log_debug("%s \"%s\": access time %s is too new.", |
646 | is_dir ? "Directory" : "File", | |
647 | sub_path, | |
0086ef19 | 648 | FORMAT_TIMESTAMP_STYLE(atime / NSEC_PER_USEC, TIMESTAMP_US)); |
7f7a50dd SK |
649 | |
650 | return false; | |
651 | } | |
652 | ||
653 | /* | |
654 | * Note: Unless explicitly specified by the user, "ctime" is ignored | |
655 | * by default for directories, because we change it when deleting. | |
656 | */ | |
657 | if (FLAGS_SET(age_by, AGE_BY_CTIME) && ctime != NSEC_INFINITY && ctime >= cutoff) { | |
7f7a50dd SK |
658 | log_debug("%s \"%s\": change time %s is too new.", |
659 | is_dir ? "Directory" : "File", | |
660 | sub_path, | |
0086ef19 | 661 | FORMAT_TIMESTAMP_STYLE(ctime / NSEC_PER_USEC, TIMESTAMP_US)); |
7f7a50dd SK |
662 | |
663 | return false; | |
664 | } | |
665 | ||
666 | if (FLAGS_SET(age_by, AGE_BY_BTIME) && btime != NSEC_INFINITY && btime >= cutoff) { | |
7f7a50dd SK |
667 | log_debug("%s \"%s\": birth time %s is too new.", |
668 | is_dir ? "Directory" : "File", | |
669 | sub_path, | |
0086ef19 | 670 | FORMAT_TIMESTAMP_STYLE(btime / NSEC_PER_USEC, TIMESTAMP_US)); |
7f7a50dd SK |
671 | |
672 | return false; | |
673 | } | |
674 | ||
675 | return true; | |
676 | } | |
677 | ||
3b63d2d3 | 678 | static int dir_cleanup( |
a5e4f3ab | 679 | Context *c, |
78a92a5a | 680 | Item *i, |
3b63d2d3 LP |
681 | const char *p, |
682 | DIR *d, | |
ddb439b8 LP |
683 | nsec_t self_atime_nsec, |
684 | nsec_t self_mtime_nsec, | |
685 | nsec_t cutoff_nsec, | |
686 | dev_t rootdev_major, | |
687 | dev_t rootdev_minor, | |
3b63d2d3 | 688 | bool mountpoint, |
24f3a374 | 689 | int maxdepth, |
7f7a50dd SK |
690 | bool keep_this_level, |
691 | AgeBy age_by_file, | |
692 | AgeBy age_by_dir) { | |
265ffa1e | 693 | |
3b63d2d3 | 694 | bool deleted = false; |
3b63d2d3 LP |
695 | int r = 0; |
696 | ||
a5e4f3ab LP |
697 | assert(c); |
698 | assert(i); | |
699 | assert(d); | |
700 | ||
c7f0d9e5 | 701 | FOREACH_DIRENT_ALL(de, d, break) { |
7fd1b19b | 702 | _cleanup_free_ char *sub_path = NULL; |
ddb439b8 | 703 | nsec_t atime_nsec, mtime_nsec, ctime_nsec, btime_nsec; |
3b63d2d3 | 704 | |
c7f0d9e5 | 705 | if (dot_or_dot_dot(de->d_name)) |
3b63d2d3 | 706 | continue; |
5008d581 | 707 | |
ca194a2a | 708 | /* If statx() is supported, use it. It's preferable over fstatat() since it tells us |
69e3234d | 709 | * explicitly where we are looking at a mount point, for free as side information. Determining |
ca194a2a LP |
710 | * the same information without statx() is hard, see the complexity of path_is_mount_point(), |
711 | * and also much slower as it requires a number of syscalls instead of just one. Hence, when | |
712 | * we have modern statx() we use it instead of fstat() and do proper mount point checks, | |
713 | * while on older kernels's well do traditional st_dev based detection of mount points. | |
714 | * | |
1bd0cefc | 715 | * Using statx() for detecting mount points also has the benefit that we handle weird file |
ca194a2a LP |
716 | * systems such as overlayfs better where each file is originating from a different |
717 | * st_dev. */ | |
718 | ||
719 | STRUCT_STATX_DEFINE(sx); | |
720 | ||
721 | r = statx_fallback( | |
c7f0d9e5 | 722 | dirfd(d), de->d_name, |
ca194a2a LP |
723 | AT_SYMLINK_NOFOLLOW|AT_NO_AUTOMOUNT, |
724 | STATX_TYPE|STATX_MODE|STATX_UID|STATX_ATIME|STATX_MTIME|STATX_CTIME|STATX_BTIME, | |
725 | &sx); | |
726 | if (r == -ENOENT) | |
727 | continue; | |
728 | if (r < 0) { | |
729 | /* FUSE, NFS mounts, SELinux might return EACCES */ | |
db6873bf ZJS |
730 | log_full_errno(r == -EACCES ? LOG_DEBUG : LOG_ERR, r, |
731 | "statx(%s/%s) failed: %m", p, de->d_name); | |
ca194a2a | 732 | continue; |
3b63d2d3 LP |
733 | } |
734 | ||
ca194a2a LP |
735 | if (FLAGS_SET(sx.stx_attributes_mask, STATX_ATTR_MOUNT_ROOT)) { |
736 | /* Yay, we have the mount point API, use it */ | |
737 | if (FLAGS_SET(sx.stx_attributes, STATX_ATTR_MOUNT_ROOT)) { | |
c7f0d9e5 | 738 | log_debug("Ignoring \"%s/%s\": different mount points.", p, de->d_name); |
ddb439b8 LP |
739 | continue; |
740 | } | |
ca194a2a LP |
741 | } else { |
742 | /* So we might have statx() but the STATX_ATTR_MOUNT_ROOT flag is not supported, fall | |
743 | * back to traditional stx_dev checking. */ | |
744 | if (sx.stx_dev_major != rootdev_major || | |
745 | sx.stx_dev_minor != rootdev_minor) { | |
c7f0d9e5 | 746 | log_debug("Ignoring \"%s/%s\": different filesystem.", p, de->d_name); |
ddb439b8 LP |
747 | continue; |
748 | } | |
749 | ||
ad36bb9f ZJS |
750 | /* Try to detect bind mounts of the same filesystem instance; they do not differ in |
751 | * device major/minors. This type of query is not supported on all kernels or | |
752 | * filesystem types though. */ | |
ca194a2a LP |
753 | if (S_ISDIR(sx.stx_mode)) { |
754 | int q; | |
3b63d2d3 | 755 | |
c7f0d9e5 | 756 | q = fd_is_mount_point(dirfd(d), de->d_name, 0); |
ca194a2a | 757 | if (q < 0) |
c7f0d9e5 | 758 | log_debug_errno(q, "Failed to determine whether \"%s/%s\" is a mount point, ignoring: %m", p, de->d_name); |
ca194a2a | 759 | else if (q > 0) { |
c7f0d9e5 | 760 | log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.", p, de->d_name); |
ca194a2a LP |
761 | continue; |
762 | } | |
60bdc0ca | 763 | } |
582deb84 | 764 | } |
99d680ac | 765 | |
41fea218 AV |
766 | atime_nsec = FLAGS_SET(sx.stx_mask, STATX_ATIME) ? statx_timestamp_load_nsec(&sx.stx_atime) : 0; |
767 | mtime_nsec = FLAGS_SET(sx.stx_mask, STATX_MTIME) ? statx_timestamp_load_nsec(&sx.stx_mtime) : 0; | |
768 | ctime_nsec = FLAGS_SET(sx.stx_mask, STATX_CTIME) ? statx_timestamp_load_nsec(&sx.stx_ctime) : 0; | |
769 | btime_nsec = FLAGS_SET(sx.stx_mask, STATX_BTIME) ? statx_timestamp_load_nsec(&sx.stx_btime) : 0; | |
ca194a2a | 770 | |
c7f0d9e5 | 771 | sub_path = path_join(p, de->d_name); |
cde684a2 | 772 | if (!sub_path) { |
0d0f0c50 | 773 | r = log_oom(); |
3b63d2d3 LP |
774 | goto finish; |
775 | } | |
776 | ||
777 | /* Is there an item configured for this path? */ | |
a5e4f3ab | 778 | if (ordered_hashmap_get(c->items, sub_path)) { |
582deb84 | 779 | log_debug("Ignoring \"%s\": a separate entry exists.", sub_path); |
3b63d2d3 | 780 | continue; |
582deb84 | 781 | } |
3b63d2d3 | 782 | |
a5e4f3ab | 783 | if (find_glob(c->globs, sub_path)) { |
582deb84 | 784 | log_debug("Ignoring \"%s\": a separate glob exists.", sub_path); |
b8bb3e8f | 785 | continue; |
582deb84 | 786 | } |
b8bb3e8f | 787 | |
ca194a2a | 788 | if (S_ISDIR(sx.stx_mode)) { |
52b32b2a | 789 | _cleanup_closedir_ DIR *sub_dir = NULL; |
3b63d2d3 LP |
790 | |
791 | if (mountpoint && | |
c7f0d9e5 | 792 | streq(de->d_name, "lost+found") && |
ca194a2a | 793 | sx.stx_uid == 0) { |
781bc44e | 794 | log_debug("Ignoring directory \"%s\".", sub_path); |
3b63d2d3 | 795 | continue; |
582deb84 | 796 | } |
3b63d2d3 LP |
797 | |
798 | if (maxdepth <= 0) | |
582deb84 | 799 | log_warning("Reached max depth on \"%s\".", sub_path); |
3b63d2d3 | 800 | else { |
3b63d2d3 LP |
801 | int q; |
802 | ||
c7f0d9e5 | 803 | sub_dir = xopendirat_nomod(dirfd(d), de->d_name); |
cde684a2 | 804 | if (!sub_dir) { |
582deb84 | 805 | if (errno != ENOENT) |
781bc44e | 806 | r = log_warning_errno(errno, "Opening directory \"%s\" failed, ignoring: %m", sub_path); |
3b63d2d3 LP |
807 | |
808 | continue; | |
809 | } | |
810 | ||
9e90d4f4 ZJS |
811 | if (!arg_dry_run && |
812 | flock(dirfd(sub_dir), LOCK_EX|LOCK_NB) < 0) { | |
b572e8da | 813 | log_debug_errno(errno, "Couldn't acquire shared BSD lock on directory \"%s\", skipping: %m", sub_path); |
52b32b2a LP |
814 | continue; |
815 | } | |
816 | ||
a5e4f3ab | 817 | q = dir_cleanup(c, i, |
ddb439b8 LP |
818 | sub_path, sub_dir, |
819 | atime_nsec, mtime_nsec, cutoff_nsec, | |
820 | rootdev_major, rootdev_minor, | |
7f7a50dd SK |
821 | false, maxdepth-1, false, |
822 | age_by_file, age_by_dir); | |
3b63d2d3 LP |
823 | if (q < 0) |
824 | r = q; | |
825 | } | |
826 | ||
a23fabc6 LP |
827 | /* Note: if you are wondering why we don't support the sticky bit for excluding |
828 | * directories from cleaning like we do it for other file system objects: well, the | |
829 | * sticky bit already has a meaning for directories, so we don't want to overload | |
830 | * that. */ | |
24f3a374 | 831 | |
582deb84 | 832 | if (keep_this_level) { |
781bc44e | 833 | log_debug("Keeping directory \"%s\".", sub_path); |
24f3a374 | 834 | continue; |
582deb84 | 835 | } |
24f3a374 | 836 | |
7f7a50dd SK |
837 | /* |
838 | * Check the file timestamps of an entry against the | |
839 | * given cutoff time; delete if it is older. | |
840 | */ | |
841 | if (!needs_cleanup(atime_nsec, btime_nsec, ctime_nsec, mtime_nsec, | |
842 | cutoff_nsec, sub_path, age_by_dir, true)) | |
3b63d2d3 LP |
843 | continue; |
844 | ||
9e90d4f4 ZJS |
845 | log_action("Would remove", "Removing", "%s directory \"%s\"", sub_path); |
846 | if (!arg_dry_run && | |
847 | unlinkat(dirfd(d), de->d_name, AT_REMOVEDIR) < 0 && | |
848 | !IN_SET(errno, ENOENT, ENOTEMPTY)) | |
849 | r = log_warning_errno(errno, "Failed to remove directory \"%s\", ignoring: %m", sub_path); | |
3b63d2d3 LP |
850 | |
851 | } else { | |
9e90d4f4 ZJS |
852 | _cleanup_close_ int fd = -EBADF; /* This file descriptor is defined here so that the |
853 | * lock that is taken below is only dropped _after_ | |
854 | * the unlink operation has finished. */ | |
65e179a1 | 855 | |
a23fabc6 LP |
856 | /* Skip files for which the sticky bit is set. These are semantics we define, and are |
857 | * unknown elsewhere. See XDG_RUNTIME_DIR specification for details. */ | |
ca194a2a | 858 | if (sx.stx_mode & S_ISVTX) { |
582deb84 | 859 | log_debug("Skipping \"%s\": sticky bit set.", sub_path); |
9c73736d | 860 | continue; |
582deb84 | 861 | } |
9c73736d | 862 | |
20b6bb95 | 863 | if (mountpoint && |
ca194a2a LP |
864 | S_ISREG(sx.stx_mode) && |
865 | sx.stx_uid == 0 && | |
c7f0d9e5 | 866 | STR_IN_SET(de->d_name, |
20b6bb95 LP |
867 | ".journal", |
868 | "aquota.user", | |
869 | "aquota.group")) { | |
870 | log_debug("Skipping \"%s\".", sub_path); | |
871 | continue; | |
872 | } | |
3b63d2d3 | 873 | |
17b90525 | 874 | /* Ignore sockets that are listed in /proc/net/unix */ |
a5e4f3ab | 875 | if (S_ISSOCK(sx.stx_mode) && unix_socket_alive(c, sub_path)) { |
582deb84 | 876 | log_debug("Skipping \"%s\": live socket.", sub_path); |
17b90525 | 877 | continue; |
582deb84 | 878 | } |
17b90525 | 879 | |
78ab08eb | 880 | /* Ignore device nodes */ |
ca194a2a | 881 | if (S_ISCHR(sx.stx_mode) || S_ISBLK(sx.stx_mode)) { |
582deb84 | 882 | log_debug("Skipping \"%s\": a device.", sub_path); |
78ab08eb | 883 | continue; |
582deb84 | 884 | } |
78ab08eb | 885 | |
9e90d4f4 | 886 | /* Keep files on this level if this was requested */ |
582deb84 ZJS |
887 | if (keep_this_level) { |
888 | log_debug("Keeping \"%s\".", sub_path); | |
24f3a374 | 889 | continue; |
582deb84 | 890 | } |
24f3a374 | 891 | |
7f7a50dd SK |
892 | if (!needs_cleanup(atime_nsec, btime_nsec, ctime_nsec, mtime_nsec, |
893 | cutoff_nsec, sub_path, age_by_file, false)) | |
3b63d2d3 | 894 | continue; |
3b63d2d3 | 895 | |
9e90d4f4 ZJS |
896 | if (!arg_dry_run) { |
897 | fd = xopenat(dirfd(d), | |
898 | de->d_name, | |
899 | O_RDONLY|O_CLOEXEC|O_NOFOLLOW|O_NOATIME|O_NONBLOCK, | |
900 | /* xopen_flags = */ 0, | |
901 | /* mode = */ 0); | |
902 | if (fd < 0 && !IN_SET(fd, -ENOENT, -ELOOP)) | |
903 | log_warning_errno(fd, "Opening file \"%s\" failed, ignoring: %m", sub_path); | |
904 | if (fd >= 0 && flock(fd, LOCK_EX|LOCK_NB) < 0 && errno == EAGAIN) { | |
905 | log_debug_errno(errno, "Couldn't acquire shared BSD lock on file \"%s\", skipping: %m", sub_path); | |
906 | continue; | |
907 | } | |
65e179a1 DDM |
908 | } |
909 | ||
9e90d4f4 ZJS |
910 | log_action("Would remove", "Removing", "%s \"%s\"", sub_path); |
911 | if (!arg_dry_run && | |
912 | unlinkat(dirfd(d), de->d_name, 0) < 0 && | |
913 | errno != ENOENT) | |
914 | r = log_warning_errno(errno, "Failed to remove \"%s\", ignoring: %m", sub_path); | |
582deb84 | 915 | |
3b63d2d3 LP |
916 | deleted = true; |
917 | } | |
918 | } | |
919 | ||
920 | finish: | |
b1935cc9 | 921 | if (deleted && (self_atime_nsec < NSEC_INFINITY || self_mtime_nsec < NSEC_INFINITY)) { |
ddb439b8 | 922 | struct timespec ts[2]; |
76e15a9c | 923 | |
9e90d4f4 ZJS |
924 | log_action("Would restore", "Restoring", |
925 | "%s access and modification time on \"%s\": %s, %s", | |
926 | p, | |
927 | FORMAT_TIMESTAMP_STYLE(self_atime_nsec / NSEC_PER_USEC, TIMESTAMP_US), | |
928 | FORMAT_TIMESTAMP_STYLE(self_mtime_nsec / NSEC_PER_USEC, TIMESTAMP_US)); | |
ddb439b8 LP |
929 | |
930 | timespec_store_nsec(ts + 0, self_atime_nsec); | |
931 | timespec_store_nsec(ts + 1, self_mtime_nsec); | |
76e15a9c LP |
932 | |
933 | /* Restore original directory timestamps */ | |
9e90d4f4 ZJS |
934 | if (!arg_dry_run && |
935 | futimens(dirfd(d), ts) < 0) | |
76e15a9c | 936 | log_warning_errno(errno, "Failed to revert timestamps of '%s', ignoring: %m", p); |
3b63d2d3 LP |
937 | } |
938 | ||
3b63d2d3 LP |
939 | return r; |
940 | } | |
941 | ||
5579f856 LP |
942 | static bool dangerous_hardlinks(void) { |
943 | _cleanup_free_ char *value = NULL; | |
944 | static int cached = -1; | |
945 | int r; | |
946 | ||
ad36bb9f ZJS |
947 | /* Check whether the fs.protected_hardlinks sysctl is on. If we can't determine it we assume its off, |
948 | * as that's what the upstream default is. */ | |
5579f856 LP |
949 | |
950 | if (cached >= 0) | |
951 | return cached; | |
952 | ||
953 | r = read_one_line_file("/proc/sys/fs/protected_hardlinks", &value); | |
954 | if (r < 0) { | |
955 | log_debug_errno(r, "Failed to read fs.protected_hardlinks sysctl: %m"); | |
956 | return true; | |
957 | } | |
958 | ||
959 | r = parse_boolean(value); | |
960 | if (r < 0) { | |
961 | log_debug_errno(r, "Failed to parse fs.protected_hardlinks sysctl: %m"); | |
962 | return true; | |
963 | } | |
964 | ||
965 | cached = r == 0; | |
966 | return cached; | |
967 | } | |
968 | ||
774f79b5 | 969 | static bool hardlink_vulnerable(const struct stat *st) { |
5579f856 LP |
970 | assert(st); |
971 | ||
972 | return !S_ISDIR(st->st_mode) && st->st_nlink > 1 && dangerous_hardlinks(); | |
973 | } | |
974 | ||
8b364a38 LP |
975 | static mode_t process_mask_perms(mode_t mode, mode_t current) { |
976 | ||
977 | if ((current & 0111) == 0) | |
978 | mode &= ~0111; | |
979 | if ((current & 0222) == 0) | |
980 | mode &= ~0222; | |
981 | if ((current & 0444) == 0) | |
982 | mode &= ~0444; | |
983 | if (!S_ISDIR(current)) | |
984 | mode &= ~07000; /* remove sticky/sgid/suid bit, unless directory */ | |
985 | ||
986 | return mode; | |
987 | } | |
988 | ||
a9bc518c | 989 | static int fd_set_perms( |
a5e4f3ab | 990 | Context *c, |
a9bc518c LP |
991 | Item *i, |
992 | int fd, | |
993 | const char *path, | |
994 | const struct stat *st, | |
995 | CreationMode creation) { | |
996 | ||
cc43328c | 997 | bool do_chown, do_chmod; |
b206ac8e | 998 | struct stat stbuf; |
a9f55d0e | 999 | mode_t new_mode; |
cc43328c LP |
1000 | uid_t new_uid; |
1001 | gid_t new_gid; | |
dee00c19 | 1002 | int r; |
1924a97d | 1003 | |
a5e4f3ab | 1004 | assert(c); |
cde684a2 | 1005 | assert(i); |
b4b0f87c | 1006 | assert(fd >= 0); |
4dc7bfdf | 1007 | assert(path); |
48b8aaa8 | 1008 | |
936f6bdb FB |
1009 | if (!i->mode_set && !i->uid_set && !i->gid_set) |
1010 | goto shortcut; | |
1924a97d | 1011 | |
b206ac8e FB |
1012 | if (!st) { |
1013 | if (fstat(fd, &stbuf) < 0) | |
1014 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
1015 | st = &stbuf; | |
1016 | } | |
1017 | ||
baaa35ad ZJS |
1018 | if (hardlink_vulnerable(st)) |
1019 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
1020 | "Refusing to set permissions on hardlinked file %s while the fs.protected_hardlinks sysctl is turned off.", | |
1021 | path); | |
cc43328c LP |
1022 | new_uid = i->uid_set && (creation != CREATION_EXISTING || !i->uid_only_create) ? i->uid : st->st_uid; |
1023 | new_gid = i->gid_set && (creation != CREATION_EXISTING || !i->gid_only_create) ? i->gid : st->st_gid; | |
5579f856 | 1024 | |
a9f55d0e | 1025 | /* Do we need a chown()? */ |
cc43328c | 1026 | do_chown = (new_uid != st->st_uid) || (new_gid != st->st_gid); |
8b364a38 | 1027 | |
a9f55d0e | 1028 | /* Calculate the mode to apply */ |
cc43328c LP |
1029 | new_mode = i->mode_set && (creation != CREATION_EXISTING || !i->mode_only_create) ? |
1030 | (i->mask_perms ? process_mask_perms(i->mode, st->st_mode) : i->mode) : | |
1031 | (st->st_mode & 07777); | |
a9f55d0e | 1032 | |
cc43328c LP |
1033 | do_chmod = ((new_mode ^ st->st_mode) & 07777) != 0; |
1034 | ||
1035 | if (do_chmod && do_chown) { | |
a9f55d0e LP |
1036 | /* Before we issue the chmod() let's reduce the access mode to the common bits of the old and |
1037 | * the new mode. That way there's no time window where the file exists under the old owner | |
1038 | * with more than the old access modes — and not under the new owner with more than the new | |
1039 | * access modes either. */ | |
8b364a38 | 1040 | |
936f6bdb | 1041 | if (S_ISLNK(st->st_mode)) |
a9f55d0e | 1042 | log_debug("Skipping temporary mode fix for symlink %s.", path); |
51207ca1 | 1043 | else { |
a9f55d0e | 1044 | mode_t m = new_mode & st->st_mode; /* Mask new mode by old mode */ |
abef3f91 | 1045 | |
a9f55d0e LP |
1046 | if (((m ^ st->st_mode) & 07777) == 0) |
1047 | log_debug("\"%s\" matches temporary mode %o already.", path, m); | |
48b8aaa8 | 1048 | else { |
9e90d4f4 ZJS |
1049 | log_action("Would temporarily change", "Temporarily changing", |
1050 | "%s \"%s\" to mode %o", path, m); | |
1051 | if (!arg_dry_run) { | |
1052 | r = fchmod_opath(fd, m); | |
1053 | if (r < 0) | |
1054 | return log_error_errno(r, "fchmod() of %s failed: %m", path); | |
1055 | } | |
48b8aaa8 | 1056 | } |
062e01bb | 1057 | } |
51207ca1 | 1058 | } |
062e01bb | 1059 | |
a9f55d0e | 1060 | if (do_chown) { |
9e90d4f4 ZJS |
1061 | log_action("Would change", "Changing", |
1062 | "%s \"%s\" to owner "UID_FMT":"GID_FMT, path, new_uid, new_gid); | |
cc43328c | 1063 | |
9e90d4f4 ZJS |
1064 | if (!arg_dry_run && |
1065 | fchownat(fd, "", | |
cc43328c LP |
1066 | new_uid != st->st_uid ? new_uid : UID_INVALID, |
1067 | new_gid != st->st_gid ? new_gid : GID_INVALID, | |
936f6bdb FB |
1068 | AT_EMPTY_PATH) < 0) |
1069 | return log_error_errno(errno, "fchownat() of %s failed: %m", path); | |
582deb84 | 1070 | } |
062e01bb | 1071 | |
a9f55d0e LP |
1072 | /* Now, apply the final mode. We do this in two cases: when the user set a mode explicitly, or after a |
1073 | * chown(), since chown()'s mangle the access mode in regards to sgid/suid in some conditions. */ | |
cc43328c | 1074 | if (do_chmod || do_chown) { |
a9f55d0e LP |
1075 | if (S_ISLNK(st->st_mode)) |
1076 | log_debug("Skipping mode fix for symlink %s.", path); | |
1077 | else { | |
9e90d4f4 ZJS |
1078 | log_action("Would change", "Changing", "%s \"%s\" to mode %o", path, new_mode); |
1079 | if (!arg_dry_run) { | |
1080 | r = fchmod_opath(fd, new_mode); | |
1081 | if (r < 0) | |
1082 | return log_error_errno(r, "fchmod() of %s failed: %m", path); | |
1083 | } | |
a9f55d0e LP |
1084 | } |
1085 | } | |
1086 | ||
59793c8f | 1087 | shortcut: |
03bc11d1 | 1088 | return label_fix_full(fd, /* inode_path= */ NULL, /* label_path= */ path, 0); |
062e01bb MS |
1089 | } |
1090 | ||
244c2a83 | 1091 | static int path_open_parent_safe(const char *path, bool allow_failure) { |
5ec9d065 | 1092 | _cleanup_free_ char *dn = NULL; |
a5648b80 | 1093 | int r, fd; |
5ec9d065 | 1094 | |
4609d3bb | 1095 | if (!path_is_normalized(path)) |
244c2a83 LB |
1096 | return log_full_errno(allow_failure ? LOG_INFO : LOG_ERR, |
1097 | SYNTHETIC_ERRNO(EINVAL), | |
1098 | "Failed to open parent of '%s': path not normalized%s.", | |
1099 | path, | |
1100 | allow_failure ? ", ignoring" : ""); | |
5ec9d065 | 1101 | |
4609d3bb LP |
1102 | r = path_extract_directory(path, &dn); |
1103 | if (r < 0) | |
244c2a83 LB |
1104 | return log_full_errno(allow_failure ? LOG_INFO : LOG_ERR, |
1105 | r, | |
1106 | "Unable to determine parent directory of '%s'%s: %m", | |
1107 | path, | |
1108 | allow_failure ? ", ignoring" : ""); | |
5ec9d065 | 1109 | |
f461a28d | 1110 | r = chase(dn, arg_root, allow_failure ? CHASE_SAFE : CHASE_SAFE|CHASE_WARN, NULL, &fd); |
4609d3bb LP |
1111 | if (r == -ENOLINK) /* Unsafe symlink: already covered by CHASE_WARN */ |
1112 | return r; | |
1113 | if (r < 0) | |
244c2a83 LB |
1114 | return log_full_errno(allow_failure ? LOG_INFO : LOG_ERR, |
1115 | r, | |
1116 | "Failed to open path '%s'%s: %m", | |
1117 | dn, | |
1118 | allow_failure ? ", ignoring" : ""); | |
5ec9d065 | 1119 | |
4609d3bb | 1120 | return fd; |
5ec9d065 FB |
1121 | } |
1122 | ||
addc3e30 | 1123 | static int path_open_safe(const char *path) { |
a5648b80 | 1124 | int r, fd; |
addc3e30 FB |
1125 | |
1126 | /* path_open_safe() returns a file descriptor opened with O_PATH after | |
1127 | * verifying that the path doesn't contain unsafe transitions, except | |
1128 | * for its final component as the function does not follow symlink. */ | |
1129 | ||
1130 | assert(path); | |
1131 | ||
baaa35ad | 1132 | if (!path_is_normalized(path)) |
4609d3bb | 1133 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Failed to open invalid path '%s'.", path); |
addc3e30 | 1134 | |
f461a28d | 1135 | r = chase(path, arg_root, CHASE_SAFE|CHASE_WARN|CHASE_NOFOLLOW, NULL, &fd); |
4609d3bb LP |
1136 | if (r == -ENOLINK) |
1137 | return r; /* Unsafe symlink: already covered by CHASE_WARN */ | |
1138 | if (r < 0) | |
1139 | return log_error_errno(r, "Failed to open path %s: %m", path); | |
addc3e30 | 1140 | |
4609d3bb | 1141 | return fd; |
addc3e30 FB |
1142 | } |
1143 | ||
a9bc518c | 1144 | static int path_set_perms( |
a5e4f3ab | 1145 | Context *c, |
a9bc518c LP |
1146 | Item *i, |
1147 | const char *path, | |
1148 | CreationMode creation) { | |
1149 | ||
254d1313 | 1150 | _cleanup_close_ int fd = -EBADF; |
936f6bdb | 1151 | |
a5e4f3ab | 1152 | assert(c); |
936f6bdb FB |
1153 | assert(i); |
1154 | assert(path); | |
1155 | ||
addc3e30 | 1156 | fd = path_open_safe(path); |
54946021 | 1157 | if (fd < 0) |
addc3e30 | 1158 | return fd; |
d460ba18 | 1159 | |
a5e4f3ab | 1160 | return fd_set_perms(c, i, fd, path, /* st= */ NULL, creation); |
936f6bdb FB |
1161 | } |
1162 | ||
bd550f78 | 1163 | static int parse_xattrs_from_arg(Item *i) { |
ebf4e801 MW |
1164 | const char *p; |
1165 | int r; | |
1166 | ||
1167 | assert(i); | |
ebf4e801 | 1168 | |
3a632fc1 | 1169 | assert_se(p = i->argument); |
4034a06d | 1170 | for (;;) { |
4cef1923 | 1171 | _cleanup_free_ char *name = NULL, *value = NULL, *xattr = NULL; |
4034a06d | 1172 | |
4ec85141 | 1173 | r = extract_first_word(&p, &xattr, NULL, EXTRACT_UNQUOTE|EXTRACT_CUNESCAPE); |
4034a06d | 1174 | if (r < 0) |
bd550f78 | 1175 | log_warning_errno(r, "Failed to parse extended attribute '%s', ignoring: %m", p); |
4034a06d LP |
1176 | if (r <= 0) |
1177 | break; | |
505ef0e3 | 1178 | |
4cef1923 | 1179 | r = split_pair(xattr, "=", &name, &value); |
ebf4e801 | 1180 | if (r < 0) { |
4034a06d | 1181 | log_warning_errno(r, "Failed to parse extended attribute, ignoring: %s", xattr); |
ebf4e801 MW |
1182 | continue; |
1183 | } | |
505ef0e3 | 1184 | |
4034a06d | 1185 | if (isempty(name) || isempty(value)) { |
bd550f78 | 1186 | log_warning("Malformed extended attribute found, ignoring: %s", xattr); |
ebf4e801 MW |
1187 | continue; |
1188 | } | |
505ef0e3 | 1189 | |
4034a06d | 1190 | if (strv_push_pair(&i->xattrs, name, value) < 0) |
ebf4e801 | 1191 | return log_oom(); |
505ef0e3 | 1192 | |
4034a06d | 1193 | name = value = NULL; |
ebf4e801 MW |
1194 | } |
1195 | ||
4034a06d | 1196 | return 0; |
ebf4e801 MW |
1197 | } |
1198 | ||
a9bc518c | 1199 | static int fd_set_xattrs( |
a5e4f3ab | 1200 | Context *c, |
a9bc518c LP |
1201 | Item *i, |
1202 | int fd, | |
1203 | const char *path, | |
1204 | const struct stat *st, | |
1205 | CreationMode creation) { | |
1206 | ||
a5e4f3ab | 1207 | assert(c); |
ebf4e801 | 1208 | assert(i); |
b4b0f87c | 1209 | assert(fd >= 0); |
4dc7bfdf | 1210 | assert(path); |
936f6bdb | 1211 | |
ebf4e801 | 1212 | STRV_FOREACH_PAIR(name, value, i->xattrs) { |
9e90d4f4 ZJS |
1213 | log_action("Would set", "Setting", |
1214 | "%s extended attribute '%s=%s' on %s", *name, *value, path); | |
1215 | ||
1216 | if (!arg_dry_run && | |
1217 | setxattr(FORMAT_PROC_FD_PATH(fd), *name, *value, strlen(*value), 0) < 0) | |
25f027c5 ZJS |
1218 | return log_error_errno(errno, "Setting extended attribute %s=%s on %s failed: %m", |
1219 | *name, *value, path); | |
ebf4e801 MW |
1220 | } |
1221 | return 0; | |
1222 | } | |
1223 | ||
a9bc518c | 1224 | static int path_set_xattrs( |
a5e4f3ab | 1225 | Context *c, |
a9bc518c LP |
1226 | Item *i, |
1227 | const char *path, | |
1228 | CreationMode creation) { | |
1229 | ||
254d1313 | 1230 | _cleanup_close_ int fd = -EBADF; |
936f6bdb | 1231 | |
a5e4f3ab | 1232 | assert(c); |
936f6bdb FB |
1233 | assert(i); |
1234 | assert(path); | |
1235 | ||
addc3e30 | 1236 | fd = path_open_safe(path); |
936f6bdb | 1237 | if (fd < 0) |
addc3e30 | 1238 | return fd; |
936f6bdb | 1239 | |
a5e4f3ab | 1240 | return fd_set_xattrs(c, i, fd, path, /* st = */ NULL, creation); |
936f6bdb FB |
1241 | } |
1242 | ||
bd550f78 | 1243 | static int parse_acls_from_arg(Item *item) { |
349cc4a5 | 1244 | #if HAVE_ACL |
f8eeeaf9 | 1245 | int r; |
f8eeeaf9 ZJS |
1246 | |
1247 | assert(item); | |
1248 | ||
c55ac248 | 1249 | /* If append_or_force (= modify) is set, we will not modify the acl |
50d9e46d | 1250 | * afterwards, so the mask can be added now if necessary. */ |
bd550f78 | 1251 | |
26d98cdd MY |
1252 | r = parse_acl(item->argument, &item->acl_access, &item->acl_access_exec, |
1253 | &item->acl_default, !item->append_or_force); | |
f8eeeaf9 | 1254 | if (r < 0) |
f939a403 | 1255 | log_full_errno(arg_graceful && IN_SET(r, -EINVAL, -ENOENT, -ESRCH) ? LOG_DEBUG : LOG_WARNING, |
e0ea6af3 | 1256 | r, "Failed to parse ACL \"%s\", ignoring: %m", item->argument); |
f8eeeaf9 | 1257 | #else |
26d98cdd | 1258 | log_warning("ACLs are not supported, ignoring."); |
f8eeeaf9 ZJS |
1259 | #endif |
1260 | ||
1261 | return 0; | |
1262 | } | |
1263 | ||
349cc4a5 | 1264 | #if HAVE_ACL |
26d98cdd MY |
1265 | static int parse_acl_cond_exec( |
1266 | const char *path, | |
1267 | acl_t access, /* could be empty (NULL) */ | |
1268 | acl_t cond_exec, | |
1269 | const struct stat *st, | |
1270 | bool append, | |
1271 | acl_t *ret) { | |
1272 | ||
1273 | _cleanup_(acl_freep) acl_t parsed = NULL; | |
1274 | acl_entry_t entry; | |
1275 | acl_permset_t permset; | |
1276 | bool has_exec; | |
1277 | int r; | |
1278 | ||
1279 | assert(path); | |
1280 | assert(ret); | |
1281 | assert(st); | |
1282 | ||
1283 | parsed = access ? acl_dup(access) : acl_init(0); | |
1284 | if (!parsed) | |
1285 | return -errno; | |
1286 | ||
1287 | /* Since we substitute 'X' with 'x' in parse_acl(), we just need to copy the entries over | |
1288 | * for directories */ | |
1289 | if (S_ISDIR(st->st_mode)) { | |
1290 | for (r = acl_get_entry(cond_exec, ACL_FIRST_ENTRY, &entry); | |
1291 | r > 0; | |
1292 | r = acl_get_entry(cond_exec, ACL_NEXT_ENTRY, &entry)) { | |
1293 | ||
1294 | acl_entry_t parsed_entry; | |
1295 | ||
1296 | if (acl_create_entry(&parsed, &parsed_entry) < 0) | |
1297 | return -errno; | |
1298 | ||
1299 | if (acl_copy_entry(parsed_entry, entry) < 0) | |
1300 | return -errno; | |
1301 | } | |
1302 | if (r < 0) | |
1303 | return -errno; | |
1304 | ||
1305 | goto finish; | |
1306 | } | |
1307 | ||
1308 | has_exec = st->st_mode & S_IXUSR; | |
1309 | ||
1310 | if (!has_exec && append) { | |
1311 | _cleanup_(acl_freep) acl_t old = NULL; | |
1312 | ||
1313 | old = acl_get_file(path, ACL_TYPE_ACCESS); | |
1314 | if (!old) | |
1315 | return -errno; | |
1316 | ||
1317 | for (r = acl_get_entry(old, ACL_FIRST_ENTRY, &entry); | |
1318 | r > 0; | |
1319 | r = acl_get_entry(old, ACL_NEXT_ENTRY, &entry)) { | |
1320 | ||
1321 | if (acl_get_permset(entry, &permset) < 0) | |
1322 | return -errno; | |
1323 | ||
1324 | r = acl_get_perm(permset, ACL_EXECUTE); | |
1325 | if (r < 0) | |
1326 | return -errno; | |
1327 | if (r > 0) { | |
1328 | has_exec = true; | |
1329 | break; | |
1330 | } | |
1331 | } | |
1332 | if (r < 0) | |
1333 | return -errno; | |
1334 | } | |
1335 | ||
1336 | /* Check if we're about to set the execute bit in acl_access */ | |
1337 | if (!has_exec && access) { | |
1338 | for (r = acl_get_entry(access, ACL_FIRST_ENTRY, &entry); | |
1339 | r > 0; | |
1340 | r = acl_get_entry(access, ACL_NEXT_ENTRY, &entry)) { | |
1341 | ||
1342 | if (acl_get_permset(entry, &permset) < 0) | |
1343 | return -errno; | |
1344 | ||
1345 | r = acl_get_perm(permset, ACL_EXECUTE); | |
1346 | if (r < 0) | |
1347 | return -errno; | |
1348 | if (r > 0) { | |
1349 | has_exec = true; | |
1350 | break; | |
1351 | } | |
1352 | } | |
1353 | if (r < 0) | |
1354 | return -errno; | |
1355 | } | |
1356 | ||
1357 | for (r = acl_get_entry(cond_exec, ACL_FIRST_ENTRY, &entry); | |
1358 | r > 0; | |
1359 | r = acl_get_entry(cond_exec, ACL_NEXT_ENTRY, &entry)) { | |
1360 | ||
1361 | acl_entry_t parsed_entry; | |
1362 | ||
1363 | if (acl_create_entry(&parsed, &parsed_entry) < 0) | |
1364 | return -errno; | |
1365 | ||
1366 | if (acl_copy_entry(parsed_entry, entry) < 0) | |
1367 | return -errno; | |
1368 | ||
1369 | if (!has_exec) { | |
1370 | if (acl_get_permset(parsed_entry, &permset) < 0) | |
1371 | return -errno; | |
1372 | ||
1373 | if (acl_delete_perm(permset, ACL_EXECUTE) < 0) | |
1374 | return -errno; | |
1375 | } | |
1376 | } | |
1377 | if (r < 0) | |
1378 | return -errno; | |
1379 | ||
1380 | finish: | |
1381 | if (!append) { /* want_mask = true */ | |
1382 | r = calc_acl_mask_if_needed(&parsed); | |
1383 | if (r < 0) | |
1384 | return r; | |
1385 | } | |
1386 | ||
1387 | *ret = TAKE_PTR(parsed); | |
1388 | ||
1389 | return 0; | |
1390 | } | |
1391 | ||
a9bc518c | 1392 | static int path_set_acl( |
a5e4f3ab | 1393 | Context *c, |
a9bc518c LP |
1394 | const char *path, |
1395 | const char *pretty, | |
1396 | acl_type_t type, | |
1397 | acl_t acl, | |
1398 | bool modify) { | |
1399 | ||
48b8aaa8 | 1400 | _cleanup_(acl_free_charpp) char *t = NULL; |
dd4105b0 | 1401 | _cleanup_(acl_freep) acl_t dup = NULL; |
50d9e46d ZJS |
1402 | int r; |
1403 | ||
a5e4f3ab LP |
1404 | assert(c); |
1405 | ||
1406 | /* Returns 0 for success, positive error if already warned, negative error otherwise. */ | |
d873e877 | 1407 | |
50d9e46d | 1408 | if (modify) { |
dd4105b0 | 1409 | r = acls_for_file(path, type, acl, &dup); |
50d9e46d ZJS |
1410 | if (r < 0) |
1411 | return r; | |
50d9e46d | 1412 | |
dd4105b0 ZJS |
1413 | r = calc_acl_mask_if_needed(&dup); |
1414 | if (r < 0) | |
1415 | return r; | |
1416 | } else { | |
1417 | dup = acl_dup(acl); | |
1418 | if (!dup) | |
1419 | return -errno; | |
1420 | ||
1421 | /* the mask was already added earlier if needed */ | |
1422 | } | |
1423 | ||
1424 | r = add_base_acls_if_needed(&dup, path); | |
1425 | if (r < 0) | |
1426 | return r; | |
1427 | ||
582deb84 | 1428 | t = acl_to_any_text(dup, NULL, ',', TEXT_ABBREVIATE); |
9e90d4f4 ZJS |
1429 | log_action("Would set", "Setting", |
1430 | "%s %s ACL %s on %s", | |
1431 | type == ACL_TYPE_ACCESS ? "access" : "default", | |
1432 | strna(t), pretty); | |
50d9e46d | 1433 | |
9e90d4f4 ZJS |
1434 | if (!arg_dry_run && |
1435 | acl_set_file(path, type, dup) < 0) { | |
3045c416 PC |
1436 | if (ERRNO_IS_NOT_SUPPORTED(errno)) |
1437 | /* No error if filesystem doesn't support ACLs. Return negative. */ | |
1438 | return -errno; | |
1439 | else | |
1440 | /* Return positive to indicate we already warned */ | |
1441 | return -log_error_errno(errno, | |
1442 | "Setting %s ACL \"%s\" on %s failed: %m", | |
1443 | type == ACL_TYPE_ACCESS ? "access" : "default", | |
1444 | strna(t), pretty); | |
1445 | } | |
582deb84 | 1446 | return 0; |
50d9e46d | 1447 | } |
35888b67 | 1448 | #endif |
50d9e46d | 1449 | |
a9bc518c | 1450 | static int fd_set_acls( |
a5e4f3ab | 1451 | Context *c, |
a9bc518c LP |
1452 | Item *item, |
1453 | int fd, | |
1454 | const char *path, | |
1455 | const struct stat *st, | |
1456 | CreationMode creation) { | |
1457 | ||
d873e877 | 1458 | int r = 0; |
349cc4a5 | 1459 | #if HAVE_ACL |
26d98cdd | 1460 | _cleanup_(acl_freep) acl_t access_with_exec_parsed = NULL; |
b206ac8e | 1461 | struct stat stbuf; |
48b8aaa8 | 1462 | |
a5e4f3ab | 1463 | assert(c); |
f8eeeaf9 | 1464 | assert(item); |
b4b0f87c | 1465 | assert(fd >= 0); |
4dc7bfdf | 1466 | assert(path); |
48b8aaa8 | 1467 | |
b206ac8e FB |
1468 | if (!st) { |
1469 | if (fstat(fd, &stbuf) < 0) | |
1470 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
1471 | st = &stbuf; | |
1472 | } | |
1473 | ||
baaa35ad ZJS |
1474 | if (hardlink_vulnerable(st)) |
1475 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
1476 | "Refusing to set ACLs on hardlinked file %s while the fs.protected_hardlinks sysctl is turned off.", | |
1477 | path); | |
5579f856 | 1478 | |
936f6bdb | 1479 | if (S_ISLNK(st->st_mode)) { |
48b8aaa8 LP |
1480 | log_debug("Skipping ACL fix for symlink %s.", path); |
1481 | return 0; | |
1482 | } | |
1483 | ||
26d98cdd MY |
1484 | if (item->acl_access_exec) { |
1485 | r = parse_acl_cond_exec(FORMAT_PROC_FD_PATH(fd), | |
1486 | item->acl_access, | |
1487 | item->acl_access_exec, | |
1488 | st, | |
1489 | item->append_or_force, | |
1490 | &access_with_exec_parsed); | |
1491 | if (r < 0) | |
1492 | return log_error_errno(r, "Failed to parse conditionalized execute bit for \"%s\": %m", path); | |
1493 | ||
a5e4f3ab | 1494 | r = path_set_acl(c, FORMAT_PROC_FD_PATH(fd), path, ACL_TYPE_ACCESS, access_with_exec_parsed, item->append_or_force); |
26d98cdd | 1495 | } else if (item->acl_access) |
a5e4f3ab | 1496 | r = path_set_acl(c, FORMAT_PROC_FD_PATH(fd), path, ACL_TYPE_ACCESS, item->acl_access, item->append_or_force); |
f8eeeaf9 | 1497 | |
2667385b RM |
1498 | /* set only default acls to folders */ |
1499 | if (r == 0 && item->acl_default && S_ISDIR(st->st_mode)) | |
a5e4f3ab | 1500 | r = path_set_acl(c, FORMAT_PROC_FD_PATH(fd), path, ACL_TYPE_DEFAULT, item->acl_default, item->append_or_force); |
f8eeeaf9 | 1501 | |
3045c416 PC |
1502 | if (ERRNO_IS_NOT_SUPPORTED(r)) { |
1503 | log_debug_errno(r, "ACLs not supported by file system at %s", path); | |
1504 | return 0; | |
1505 | } | |
1506 | ||
d873e877 | 1507 | if (r > 0) |
26d98cdd | 1508 | return -r; /* already warned in path_set_acl */ |
f8606626 LP |
1509 | |
1510 | /* The above procfs paths don't work if /proc is not mounted. */ | |
1511 | if (r == -ENOENT && proc_mounted() == 0) | |
1512 | r = -ENOSYS; | |
1513 | ||
936f6bdb FB |
1514 | if (r < 0) |
1515 | return log_error_errno(r, "ACL operation on \"%s\" failed: %m", path); | |
d873e877 HPD |
1516 | #endif |
1517 | return r; | |
f8eeeaf9 ZJS |
1518 | } |
1519 | ||
a5e4f3ab LP |
1520 | static int path_set_acls( |
1521 | Context *c, | |
1522 | Item *item, | |
1523 | const char *path, | |
1524 | CreationMode creation) { | |
1525 | ||
936f6bdb | 1526 | int r = 0; |
545cdb90 | 1527 | #if HAVE_ACL |
254d1313 | 1528 | _cleanup_close_ int fd = -EBADF; |
936f6bdb | 1529 | |
a5e4f3ab | 1530 | assert(c); |
936f6bdb FB |
1531 | assert(item); |
1532 | assert(path); | |
1533 | ||
addc3e30 | 1534 | fd = path_open_safe(path); |
936f6bdb | 1535 | if (fd < 0) |
addc3e30 | 1536 | return fd; |
936f6bdb | 1537 | |
a5e4f3ab | 1538 | r = fd_set_acls(c, item, fd, path, /* st= */ NULL, creation); |
545cdb90 YW |
1539 | #endif |
1540 | return r; | |
1541 | } | |
936f6bdb | 1542 | |
bd550f78 | 1543 | static int parse_attribute_from_arg(Item *item) { |
88ec4dfa LP |
1544 | static const struct { |
1545 | char character; | |
1546 | unsigned value; | |
1547 | } attributes[] = { | |
1548 | { 'A', FS_NOATIME_FL }, /* do not update atime */ | |
1549 | { 'S', FS_SYNC_FL }, /* Synchronous updates */ | |
1550 | { 'D', FS_DIRSYNC_FL }, /* dirsync behaviour (directories only) */ | |
1551 | { 'a', FS_APPEND_FL }, /* writes to file may only append */ | |
1552 | { 'c', FS_COMPR_FL }, /* Compress file */ | |
1553 | { 'd', FS_NODUMP_FL }, /* do not dump file */ | |
8c35b2ca | 1554 | { 'e', FS_EXTENT_FL }, /* Extents */ |
88ec4dfa LP |
1555 | { 'i', FS_IMMUTABLE_FL }, /* Immutable file */ |
1556 | { 'j', FS_JOURNAL_DATA_FL }, /* Reserved for ext3 */ | |
1557 | { 's', FS_SECRM_FL }, /* Secure deletion */ | |
1558 | { 'u', FS_UNRM_FL }, /* Undelete */ | |
1559 | { 't', FS_NOTAIL_FL }, /* file tail should not be merged */ | |
13e785f7 | 1560 | { 'T', FS_TOPDIR_FL }, /* Top of directory hierarchies */ |
88ec4dfa | 1561 | { 'C', FS_NOCOW_FL }, /* Do not cow file */ |
75006470 | 1562 | { 'P', FS_PROJINHERIT_FL }, /* Inherit the quota project ID */ |
22c3a6ca | 1563 | }; |
88ec4dfa | 1564 | |
22c3a6ca GB |
1565 | enum { |
1566 | MODE_ADD, | |
1567 | MODE_DEL, | |
1568 | MODE_SET | |
1569 | } mode = MODE_ADD; | |
22c3a6ca | 1570 | |
88ec4dfa LP |
1571 | unsigned value = 0, mask = 0; |
1572 | const char *p; | |
22c3a6ca | 1573 | |
88ec4dfa LP |
1574 | assert(item); |
1575 | ||
1576 | p = item->argument; | |
1577 | if (p) { | |
1578 | if (*p == '+') { | |
1579 | mode = MODE_ADD; | |
1580 | p++; | |
1581 | } else if (*p == '-') { | |
1582 | mode = MODE_DEL; | |
1583 | p++; | |
1584 | } else if (*p == '=') { | |
1585 | mode = MODE_SET; | |
1586 | p++; | |
1587 | } | |
22c3a6ca GB |
1588 | } |
1589 | ||
baaa35ad ZJS |
1590 | if (isempty(p) && mode != MODE_SET) |
1591 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1592 | "Setting file attribute on '%s' needs an attribute specification.", | |
1593 | item->path); | |
88ec4dfa LP |
1594 | |
1595 | for (; p && *p ; p++) { | |
1596 | unsigned i, v; | |
1597 | ||
1598 | for (i = 0; i < ELEMENTSOF(attributes); i++) | |
1599 | if (*p == attributes[i].character) | |
1600 | break; | |
1601 | ||
baaa35ad ZJS |
1602 | if (i >= ELEMENTSOF(attributes)) |
1603 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
ad36bb9f | 1604 | "Unknown file attribute '%c' on '%s'.", *p, item->path); |
88ec4dfa LP |
1605 | |
1606 | v = attributes[i].value; | |
1607 | ||
3742095b | 1608 | SET_FLAG(value, v, IN_SET(mode, MODE_ADD, MODE_SET)); |
88ec4dfa LP |
1609 | |
1610 | mask |= v; | |
22c3a6ca GB |
1611 | } |
1612 | ||
1613 | if (mode == MODE_SET) | |
d629ba70 | 1614 | mask |= CHATTR_ALL_FL; |
22c3a6ca | 1615 | |
88ec4dfa | 1616 | assert(mask != 0); |
22c3a6ca | 1617 | |
88ec4dfa LP |
1618 | item->attribute_mask = mask; |
1619 | item->attribute_value = value; | |
1620 | item->attribute_set = true; | |
22c3a6ca GB |
1621 | |
1622 | return 0; | |
22c3a6ca GB |
1623 | } |
1624 | ||
a9bc518c | 1625 | static int fd_set_attribute( |
a5e4f3ab | 1626 | Context *c, |
a9bc518c LP |
1627 | Item *item, |
1628 | int fd, | |
1629 | const char *path, | |
1630 | const struct stat *st, | |
1631 | CreationMode creation) { | |
1632 | ||
b206ac8e | 1633 | struct stat stbuf; |
88ec4dfa LP |
1634 | unsigned f; |
1635 | int r; | |
22c3a6ca | 1636 | |
a5e4f3ab | 1637 | assert(c); |
4dc7bfdf | 1638 | assert(item); |
b4b0f87c | 1639 | assert(fd >= 0); |
4dc7bfdf FB |
1640 | assert(path); |
1641 | ||
88ec4dfa | 1642 | if (!item->attribute_set || item->attribute_mask == 0) |
22c3a6ca | 1643 | return 0; |
22c3a6ca | 1644 | |
b206ac8e FB |
1645 | if (!st) { |
1646 | if (fstat(fd, &stbuf) < 0) | |
1647 | return log_error_errno(errno, "fstat(%s) failed: %m", path); | |
1648 | st = &stbuf; | |
1649 | } | |
1650 | ||
c5d554aa LP |
1651 | /* Issuing the file attribute ioctls on device nodes is not safe, as that will be delivered to the |
1652 | * drivers, not the file system containing the device node. */ | |
baaa35ad ZJS |
1653 | if (!S_ISREG(st->st_mode) && !S_ISDIR(st->st_mode)) |
1654 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1655 | "Setting file flags is only supported on regular files and directories, cannot set on '%s'.", | |
1656 | path); | |
88ec4dfa LP |
1657 | |
1658 | f = item->attribute_value & item->attribute_mask; | |
1659 | ||
1660 | /* Mask away directory-specific flags */ | |
936f6bdb | 1661 | if (!S_ISDIR(st->st_mode)) |
22c3a6ca | 1662 | f &= ~FS_DIRSYNC_FL; |
88ec4dfa | 1663 | |
9e90d4f4 ZJS |
1664 | log_action("Would try to set", "Trying to set", |
1665 | "%s file attributes 0x%08x on %s", | |
1666 | f & item->attribute_mask, | |
1667 | path); | |
1668 | ||
1669 | if (!arg_dry_run) { | |
1670 | _cleanup_close_ int procfs_fd = -EBADF; | |
1671 | ||
1672 | procfs_fd = fd_reopen(fd, O_RDONLY|O_CLOEXEC|O_NOATIME); | |
1673 | if (procfs_fd < 0) | |
1674 | return log_error_errno(procfs_fd, "Failed to reopen '%s': %m", path); | |
1675 | ||
1676 | unsigned previous, current; | |
1677 | r = chattr_full(procfs_fd, NULL, f, item->attribute_mask, &previous, ¤t, CHATTR_FALLBACK_BITWISE); | |
1678 | if (r == -ENOANO) | |
1679 | log_warning("Cannot set file attributes for '%s', maybe due to incompatibility in specified attributes, " | |
1680 | "previous=0x%08x, current=0x%08x, expected=0x%08x, ignoring.", | |
1681 | path, previous, current, (previous & ~item->attribute_mask) | (f & item->attribute_mask)); | |
1682 | else if (r < 0) | |
1683 | log_full_errno(ERRNO_IS_NOT_SUPPORTED(r) ? LOG_DEBUG : LOG_WARNING, r, | |
1684 | "Cannot set file attributes for '%s', value=0x%08x, mask=0x%08x, ignoring: %m", | |
1685 | path, item->attribute_value, item->attribute_mask); | |
1686 | } | |
22c3a6ca GB |
1687 | |
1688 | return 0; | |
1689 | } | |
1690 | ||
a5e4f3ab LP |
1691 | static int path_set_attribute( |
1692 | Context *c, | |
1693 | Item *item, | |
1694 | const char *path, | |
1695 | CreationMode creation) { | |
1696 | ||
254d1313 | 1697 | _cleanup_close_ int fd = -EBADF; |
936f6bdb | 1698 | |
a5e4f3ab LP |
1699 | assert(c); |
1700 | assert(item); | |
1701 | ||
936f6bdb FB |
1702 | if (!item->attribute_set || item->attribute_mask == 0) |
1703 | return 0; | |
1704 | ||
addc3e30 | 1705 | fd = path_open_safe(path); |
936f6bdb | 1706 | if (fd < 0) |
addc3e30 | 1707 | return fd; |
936f6bdb | 1708 | |
a5e4f3ab | 1709 | return fd_set_attribute(c, item, fd, path, /* st= */ NULL, creation); |
936f6bdb FB |
1710 | } |
1711 | ||
708daf42 LP |
1712 | static int write_argument_data(Item *i, int fd, const char *path) { |
1713 | int r; | |
1714 | ||
1715 | assert(i); | |
1716 | assert(fd >= 0); | |
1717 | assert(path); | |
1718 | ||
1719 | if (item_binary_argument_size(i) == 0) | |
1720 | return 0; | |
1721 | ||
1722 | assert(item_binary_argument(i)); | |
1723 | ||
9e90d4f4 | 1724 | log_action("Would write", "Writing", "%s to \"%s\"", path); |
708daf42 | 1725 | |
9e90d4f4 ZJS |
1726 | if (!arg_dry_run) { |
1727 | r = loop_write(fd, item_binary_argument(i), item_binary_argument_size(i)); | |
1728 | if (r < 0) | |
1729 | return log_error_errno(r, "Failed to write file \"%s\": %m", path); | |
1730 | } | |
708daf42 LP |
1731 | |
1732 | return 0; | |
1733 | } | |
1734 | ||
a5e4f3ab | 1735 | static int write_one_file(Context *c, Item *i, const char *path, CreationMode creation) { |
254d1313 | 1736 | _cleanup_close_ int fd = -EBADF, dir_fd = -EBADF; |
4609d3bb | 1737 | _cleanup_free_ char *bn = NULL; |
1baaf8aa | 1738 | int r; |
31c84ff1 | 1739 | |
a5e4f3ab | 1740 | assert(c); |
31c84ff1 FB |
1741 | assert(i); |
1742 | assert(path); | |
31c84ff1 FB |
1743 | assert(i->type == WRITE_FILE); |
1744 | ||
4609d3bb LP |
1745 | r = path_extract_filename(path, &bn); |
1746 | if (r < 0) | |
1747 | return log_error_errno(r, "Failed to extract filename from path '%s': %m", path); | |
1748 | if (r == O_DIRECTORY) | |
1749 | return log_error_errno(SYNTHETIC_ERRNO(EISDIR), "Cannot open path '%s' for writing, is a directory.", path); | |
1750 | ||
1751 | /* Validate the path and keep the fd on the directory for opening the file so we're sure that it | |
1752 | * can't be changed behind our back. */ | |
244c2a83 | 1753 | dir_fd = path_open_parent_safe(path, i->allow_failure); |
551470ec FB |
1754 | if (dir_fd < 0) |
1755 | return dir_fd; | |
1756 | ||
9e90d4f4 ZJS |
1757 | /* Follow symlinks. Open with O_PATH in dry-run mode to make sure we don't use the path inadvertently. */ |
1758 | int flags = O_NONBLOCK | O_CLOEXEC | O_WRONLY | O_NOCTTY | i->append_or_force * O_APPEND | arg_dry_run * O_PATH; | |
1759 | fd = openat(dir_fd, bn, flags, i->mode); | |
31c84ff1 FB |
1760 | if (fd < 0) { |
1761 | if (errno == ENOENT) { | |
1762 | log_debug_errno(errno, "Not writing missing file \"%s\": %m", path); | |
1763 | return 0; | |
1764 | } | |
1baaf8aa LP |
1765 | |
1766 | if (i->allow_failure) | |
1767 | return log_debug_errno(errno, "Failed to open file \"%s\", ignoring: %m", path); | |
1768 | ||
31c84ff1 FB |
1769 | return log_error_errno(errno, "Failed to open file \"%s\": %m", path); |
1770 | } | |
1771 | ||
1772 | /* 'w' is allowed to write into any kind of files. */ | |
31c84ff1 | 1773 | |
708daf42 | 1774 | r = write_argument_data(i, fd, path); |
31c84ff1 | 1775 | if (r < 0) |
708daf42 | 1776 | return r; |
31c84ff1 | 1777 | |
a5e4f3ab | 1778 | return fd_set_perms(c, i, fd, path, NULL, creation); |
31c84ff1 FB |
1779 | } |
1780 | ||
a5e4f3ab LP |
1781 | static int create_file( |
1782 | Context *c, | |
1783 | Item *i, | |
1784 | const char *path) { | |
1785 | ||
254d1313 | 1786 | _cleanup_close_ int fd = -EBADF, dir_fd = -EBADF; |
4609d3bb | 1787 | _cleanup_free_ char *bn = NULL; |
5ec9d065 | 1788 | struct stat stbuf, *st = NULL; |
a9bc518c | 1789 | CreationMode creation; |
5ec9d065 | 1790 | int r = 0; |
d4e9eb91 | 1791 | |
a5e4f3ab | 1792 | assert(c); |
874f1947 LP |
1793 | assert(i); |
1794 | assert(path); | |
5ec9d065 FB |
1795 | assert(i->type == CREATE_FILE); |
1796 | ||
1797 | /* 'f' operates on regular files exclusively. */ | |
1798 | ||
4609d3bb LP |
1799 | r = path_extract_filename(path, &bn); |
1800 | if (r < 0) | |
1801 | return log_error_errno(r, "Failed to extract filename from path '%s': %m", path); | |
1802 | if (r == O_DIRECTORY) | |
1803 | return log_error_errno(SYNTHETIC_ERRNO(EISDIR), "Cannot open path '%s' for writing, is a directory.", path); | |
1804 | ||
9e90d4f4 ZJS |
1805 | if (arg_dry_run) { |
1806 | log_info("Would create file %s", path); | |
1807 | return 0; | |
1808 | ||
1809 | /* The opening of the directory below would fail if it doesn't exist, | |
1810 | * so log and exit before even trying to do that. */ | |
1811 | } | |
1812 | ||
4609d3bb LP |
1813 | /* Validate the path and keep the fd on the directory for opening the file so we're sure that it |
1814 | * can't be changed behind our back. */ | |
244c2a83 | 1815 | dir_fd = path_open_parent_safe(path, i->allow_failure); |
5ec9d065 FB |
1816 | if (dir_fd < 0) |
1817 | return dir_fd; | |
874f1947 | 1818 | |
2053593f | 1819 | WITH_UMASK(0000) { |
ecabcf8b | 1820 | mac_selinux_create_file_prepare(path, S_IFREG); |
05c4affe | 1821 | fd = RET_NERRNO(openat(dir_fd, bn, O_CREAT|O_EXCL|O_NOFOLLOW|O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode)); |
ecabcf8b | 1822 | mac_selinux_create_file_clear(); |
5c0d398d | 1823 | } |
d4e9eb91 DR |
1824 | |
1825 | if (fd < 0) { | |
c5d554aa LP |
1826 | /* Even on a read-only filesystem, open(2) returns EEXIST if the file already exists. It |
1827 | * returns EROFS only if it needs to create the file. */ | |
05c4affe LP |
1828 | if (fd != -EEXIST) |
1829 | return log_error_errno(fd, "Failed to create file %s: %m", path); | |
5ec9d065 | 1830 | |
c5d554aa LP |
1831 | /* Re-open the file. At that point it must exist since open(2) failed with EEXIST. We still |
1832 | * need to check if the perms/mode need to be changed. For read-only filesystems, we let | |
1833 | * fd_set_perms() report the error if the perms need to be modified. */ | |
5ec9d065 FB |
1834 | fd = openat(dir_fd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH, i->mode); |
1835 | if (fd < 0) | |
f7862b2a | 1836 | return log_error_errno(errno, "Failed to reopen file %s: %m", path); |
5ec9d065 FB |
1837 | |
1838 | if (fstat(fd, &stbuf) < 0) | |
1839 | return log_error_errno(errno, "stat(%s) failed: %m", path); | |
1840 | ||
d7a0f1f4 FS |
1841 | if (!S_ISREG(stbuf.st_mode)) |
1842 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
1843 | "%s exists and is not a regular file.", | |
1844 | path); | |
d4e9eb91 | 1845 | |
5ec9d065 | 1846 | st = &stbuf; |
a9bc518c LP |
1847 | creation = CREATION_EXISTING; |
1848 | } else { | |
8f6fb95c LP |
1849 | r = write_argument_data(i, fd, path); |
1850 | if (r < 0) | |
1851 | return r; | |
a9bc518c LP |
1852 | |
1853 | creation = CREATION_NORMAL; | |
d4e9eb91 DR |
1854 | } |
1855 | ||
a5e4f3ab | 1856 | return fd_set_perms(c, i, fd, path, st, creation); |
5ec9d065 | 1857 | } |
d4e9eb91 | 1858 | |
a5e4f3ab LP |
1859 | static int truncate_file( |
1860 | Context *c, | |
1861 | Item *i, | |
1862 | const char *path) { | |
1863 | ||
254d1313 | 1864 | _cleanup_close_ int fd = -EBADF, dir_fd = -EBADF; |
4609d3bb | 1865 | _cleanup_free_ char *bn = NULL; |
5ec9d065 | 1866 | struct stat stbuf, *st = NULL; |
a9bc518c | 1867 | CreationMode creation; |
5ec9d065 FB |
1868 | bool erofs = false; |
1869 | int r = 0; | |
1870 | ||
a5e4f3ab | 1871 | assert(c); |
5ec9d065 FB |
1872 | assert(i); |
1873 | assert(path); | |
eccebf4b | 1874 | assert(i->type == TRUNCATE_FILE || (i->type == CREATE_FILE && i->append_or_force)); |
d4e9eb91 | 1875 | |
4609d3bb LP |
1876 | /* We want to operate on regular file exclusively especially since O_TRUNC is unspecified if the file |
1877 | * is neither a regular file nor a fifo nor a terminal device. Therefore we first open the file and | |
1878 | * make sure it's a regular one before truncating it. */ | |
1879 | ||
1880 | r = path_extract_filename(path, &bn); | |
1881 | if (r < 0) | |
1882 | return log_error_errno(r, "Failed to extract filename from path '%s': %m", path); | |
1883 | if (r == O_DIRECTORY) | |
1884 | return log_error_errno(SYNTHETIC_ERRNO(EISDIR), "Cannot open path '%s' for truncation, is a directory.", path); | |
3612fbc1 | 1885 | |
4609d3bb LP |
1886 | /* Validate the path and keep the fd on the directory for opening the file so we're sure that it |
1887 | * can't be changed behind our back. */ | |
244c2a83 | 1888 | dir_fd = path_open_parent_safe(path, i->allow_failure); |
14ab804e FB |
1889 | if (dir_fd < 0) |
1890 | return dir_fd; | |
1891 | ||
9e90d4f4 ZJS |
1892 | if (arg_dry_run) { |
1893 | log_info("Would truncate %s", path); | |
1894 | return 0; | |
1895 | } | |
1896 | ||
a9bc518c LP |
1897 | creation = CREATION_EXISTING; |
1898 | fd = RET_NERRNO(openat(dir_fd, bn, O_NOFOLLOW|O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode)); | |
1899 | if (fd == -ENOENT) { | |
1900 | creation = CREATION_NORMAL; /* Didn't work without O_CREATE, try again with */ | |
1901 | ||
2053593f | 1902 | WITH_UMASK(0000) { |
a9bc518c LP |
1903 | mac_selinux_create_file_prepare(path, S_IFREG); |
1904 | fd = RET_NERRNO(openat(dir_fd, bn, O_CREAT|O_NOFOLLOW|O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode)); | |
1905 | mac_selinux_create_file_clear(); | |
1906 | } | |
5ec9d065 FB |
1907 | } |
1908 | ||
1909 | if (fd < 0) { | |
05c4affe LP |
1910 | if (fd != -EROFS) |
1911 | return log_error_errno(fd, "Failed to open/create file %s: %m", path); | |
5ec9d065 | 1912 | |
c5d554aa LP |
1913 | /* On a read-only filesystem, we don't want to fail if the target is already empty and the |
1914 | * perms are set. So we still proceed with the sanity checks and let the remaining operations | |
1915 | * fail with EROFS if they try to modify the target file. */ | |
5ec9d065 | 1916 | |
14ab804e | 1917 | fd = openat(dir_fd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH, i->mode); |
5ec9d065 | 1918 | if (fd < 0) { |
d7a0f1f4 FS |
1919 | if (errno == ENOENT) |
1920 | return log_error_errno(SYNTHETIC_ERRNO(EROFS), | |
1921 | "Cannot create file %s on a read-only file system.", | |
1922 | path); | |
5ec9d065 | 1923 | |
f7862b2a | 1924 | return log_error_errno(errno, "Failed to reopen file %s: %m", path); |
5ec9d065 FB |
1925 | } |
1926 | ||
1927 | erofs = true; | |
a9bc518c | 1928 | creation = CREATION_EXISTING; |
5ec9d065 FB |
1929 | } |
1930 | ||
1931 | if (fstat(fd, &stbuf) < 0) | |
4a62c710 | 1932 | return log_error_errno(errno, "stat(%s) failed: %m", path); |
d4e9eb91 | 1933 | |
d7a0f1f4 FS |
1934 | if (!S_ISREG(stbuf.st_mode)) |
1935 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
1936 | "%s exists and is not a regular file.", | |
1937 | path); | |
d4e9eb91 | 1938 | |
5ec9d065 FB |
1939 | if (stbuf.st_size > 0) { |
1940 | if (ftruncate(fd, 0) < 0) { | |
1941 | r = erofs ? -EROFS : -errno; | |
1942 | return log_error_errno(r, "Failed to truncate file %s: %m", path); | |
1943 | } | |
1944 | } else | |
1945 | st = &stbuf; | |
d4e9eb91 | 1946 | |
5ec9d065 FB |
1947 | log_debug("\"%s\" has been created.", path); |
1948 | ||
708daf42 LP |
1949 | if (item_binary_argument(i)) { |
1950 | r = write_argument_data(i, fd, path); | |
2f3745dd | 1951 | if (r < 0) |
708daf42 | 1952 | return r; |
5ec9d065 FB |
1953 | } |
1954 | ||
a5e4f3ab | 1955 | return fd_set_perms(c, i, fd, path, st, creation); |
d4e9eb91 DR |
1956 | } |
1957 | ||
a5e4f3ab | 1958 | static int copy_files(Context *c, Item *i) { |
254d1313 | 1959 | _cleanup_close_ int dfd = -EBADF, fd = -EBADF; |
4609d3bb | 1960 | _cleanup_free_ char *bn = NULL; |
8f6fb95c | 1961 | struct stat st, a; |
b1f7b17f FB |
1962 | int r; |
1963 | ||
9e90d4f4 ZJS |
1964 | log_action("Would copy", "Copying", "%s tree \"%s\" to \"%s\"", i->argument, i->path); |
1965 | if (arg_dry_run) | |
1966 | return 0; | |
b1f7b17f | 1967 | |
4609d3bb LP |
1968 | r = path_extract_filename(i->path, &bn); |
1969 | if (r < 0) | |
1970 | return log_error_errno(r, "Failed to extract filename from path '%s': %m", i->path); | |
b1f7b17f | 1971 | |
4609d3bb LP |
1972 | /* Validate the path and use the returned directory fd for copying the target so we're sure that the |
1973 | * path can't be changed behind our back. */ | |
244c2a83 | 1974 | dfd = path_open_parent_safe(i->path, i->allow_failure); |
16ba55ad FB |
1975 | if (dfd < 0) |
1976 | return dfd; | |
b1f7b17f | 1977 | |
16ba55ad FB |
1978 | r = copy_tree_at(AT_FDCWD, i->argument, |
1979 | dfd, bn, | |
1980 | i->uid_set ? i->uid : UID_INVALID, | |
1981 | i->gid_set ? i->gid : GID_INVALID, | |
1fd5ec56 | 1982 | COPY_REFLINK | ((i->append_or_force) ? COPY_MERGE : COPY_MERGE_EMPTY) | COPY_MAC_CREATE | COPY_HARDLINKS, |
ad6fae7f | 1983 | NULL, NULL); |
b1f7b17f | 1984 | |
8f6fb95c LP |
1985 | fd = openat(dfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
1986 | if (fd < 0) { | |
1987 | if (r < 0) /* Look at original error first */ | |
b1f7b17f FB |
1988 | return log_error_errno(r, "Failed to copy files to %s: %m", i->path); |
1989 | ||
8f6fb95c LP |
1990 | return log_error_errno(errno, "Failed to openat(%s): %m", i->path); |
1991 | } | |
1992 | ||
1993 | if (fstat(fd, &st) < 0) | |
1994 | return log_error_errno(errno, "Failed to fstat(%s): %m", i->path); | |
b1f7b17f | 1995 | |
8f6fb95c LP |
1996 | if (stat(i->argument, &a) < 0) |
1997 | return log_error_errno(errno, "Failed to stat(%s): %m", i->argument); | |
b1f7b17f | 1998 | |
8f6fb95c LP |
1999 | if (((st.st_mode ^ a.st_mode) & S_IFMT) != 0) { |
2000 | log_debug("Can't copy to %s, file exists already and is of different type", i->path); | |
2001 | return 0; | |
b1f7b17f FB |
2002 | } |
2003 | ||
a5e4f3ab | 2004 | return fd_set_perms(c, i, fd, i->path, &st, _CREATION_MODE_INVALID); |
b1f7b17f FB |
2005 | } |
2006 | ||
a9bc518c LP |
2007 | static int create_directory_or_subvolume( |
2008 | const char *path, | |
2009 | mode_t mode, | |
2010 | bool subvol, | |
244c2a83 | 2011 | bool allow_failure, |
8f6fb95c | 2012 | struct stat *ret_st, |
a9bc518c | 2013 | CreationMode *ret_creation) { |
074bd73f | 2014 | |
4609d3bb | 2015 | _cleanup_free_ char *bn = NULL; |
254d1313 | 2016 | _cleanup_close_ int pfd = -EBADF; |
8f6fb95c LP |
2017 | CreationMode creation; |
2018 | struct stat st; | |
a9bc518c | 2019 | int r, fd; |
4ad36844 | 2020 | |
4c39d899 | 2021 | assert(path); |
4ad36844 | 2022 | |
4609d3bb LP |
2023 | r = path_extract_filename(path, &bn); |
2024 | if (r < 0) | |
2025 | return log_error_errno(r, "Failed to extract filename from path '%s': %m", path); | |
2026 | ||
244c2a83 | 2027 | pfd = path_open_parent_safe(path, allow_failure); |
4c39d899 FB |
2028 | if (pfd < 0) |
2029 | return pfd; | |
4ad36844 | 2030 | |
4c39d899 | 2031 | if (subvol) { |
4368c60c AV |
2032 | r = getenv_bool("SYSTEMD_TMPFILES_FORCE_SUBVOL"); |
2033 | if (r < 0) { | |
2034 | if (r != -ENXIO) /* env var is unset */ | |
2035 | log_warning_errno(r, "Cannot parse value of $SYSTEMD_TMPFILES_FORCE_SUBVOL, ignoring."); | |
2036 | r = btrfs_is_subvol(empty_to_root(arg_root)) > 0; | |
2037 | } | |
8f6fb95c | 2038 | if (r == 0) |
92631578 LP |
2039 | /* Don't create a subvolume unless the root directory is one, too. We do this under |
2040 | * the assumption that if the root directory is just a plain directory (i.e. very | |
2041 | * light-weight), we shouldn't try to split it up into subvolumes (i.e. more | |
2042 | * heavy-weight). Thus, chroot() environments and suchlike will get a full brtfs | |
2043 | * subvolume set up below their tree only if they specifically set up a btrfs | |
2044 | * subvolume for the root dir too. */ | |
4c39d899 | 2045 | subvol = false; |
4ad36844 | 2046 | else { |
9e90d4f4 ZJS |
2047 | log_action("Would create", "Creating", "%s btrfs subvolume %s", path); |
2048 | if (!arg_dry_run) | |
2049 | WITH_UMASK((~mode) & 0777) | |
2050 | r = btrfs_subvol_make(pfd, bn); | |
2051 | else | |
2052 | r = 0; | |
4ad36844 FB |
2053 | } |
2054 | } else | |
2055 | r = 0; | |
2056 | ||
9e90d4f4 ZJS |
2057 | if (!subvol || ERRNO_IS_NEG_NOT_SUPPORTED(r)) { |
2058 | log_action("Would create", "Creating", "%s directory \"%s\"", path); | |
2059 | if (!arg_dry_run) | |
2060 | WITH_UMASK(0000) | |
2061 | r = mkdirat_label(pfd, bn, mode); | |
2062 | } | |
2063 | ||
2064 | if (arg_dry_run) | |
2065 | return 0; | |
4ad36844 | 2066 | |
8f6fb95c | 2067 | creation = r >= 0 ? CREATION_NORMAL : CREATION_EXISTING; |
4ad36844 | 2068 | |
8f6fb95c LP |
2069 | fd = openat(pfd, bn, O_NOFOLLOW|O_CLOEXEC|O_DIRECTORY|O_PATH); |
2070 | if (fd < 0) { | |
2071 | /* We couldn't open it because it is not actually a directory? */ | |
2072 | if (errno == ENOTDIR) | |
2073 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), "\"%s\" already exists and is not a directory.", path); | |
2074 | ||
2075 | /* Then look at the original error */ | |
2076 | if (r < 0) | |
244c2a83 LB |
2077 | return log_full_errno(allow_failure ? LOG_INFO : LOG_ERR, |
2078 | r, | |
2079 | "Failed to create directory or subvolume \"%s\"%s: %m", | |
2080 | path, | |
2081 | allow_failure ? ", ignoring" : ""); | |
4ad36844 | 2082 | |
8f6fb95c LP |
2083 | return log_error_errno(errno, "Failed to open directory/subvolume we just created '%s': %m", path); |
2084 | } | |
4ad36844 | 2085 | |
8f6fb95c LP |
2086 | if (fstat(fd, &st) < 0) |
2087 | return log_error_errno(errno, "Failed to fstat(%s): %m", path); | |
4ad36844 | 2088 | |
8f6fb95c | 2089 | assert(S_ISDIR(st.st_mode)); /* we used O_DIRECTORY above */ |
4c39d899 | 2090 | |
8f6fb95c | 2091 | log_debug("%s directory \"%s\".", creation_mode_verb_to_string(creation), path); |
09f12798 | 2092 | |
8f6fb95c LP |
2093 | if (ret_st) |
2094 | *ret_st = st; | |
a9bc518c | 2095 | if (ret_creation) |
8f6fb95c | 2096 | *ret_creation = creation; |
a9bc518c LP |
2097 | |
2098 | return fd; | |
4c39d899 FB |
2099 | } |
2100 | ||
a5e4f3ab LP |
2101 | static int create_directory( |
2102 | Context *c, | |
2103 | Item *i, | |
2104 | const char *path) { | |
2105 | ||
254d1313 | 2106 | _cleanup_close_ int fd = -EBADF; |
a9bc518c | 2107 | CreationMode creation; |
8f6fb95c | 2108 | struct stat st; |
4c39d899 | 2109 | |
a5e4f3ab | 2110 | assert(c); |
4c39d899 FB |
2111 | assert(i); |
2112 | assert(IN_SET(i->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY)); | |
2113 | ||
9e90d4f4 ZJS |
2114 | if (arg_dry_run) { |
2115 | log_info("Would create directory %s", path); | |
2116 | return 0; | |
2117 | } | |
2118 | ||
244c2a83 | 2119 | fd = create_directory_or_subvolume(path, i->mode, /* subvol= */ false, i->allow_failure, &st, &creation); |
4c39d899 FB |
2120 | if (fd == -EEXIST) |
2121 | return 0; | |
2122 | if (fd < 0) | |
2123 | return fd; | |
2124 | ||
a5e4f3ab | 2125 | return fd_set_perms(c, i, fd, path, &st, creation); |
4c39d899 FB |
2126 | } |
2127 | ||
a5e4f3ab LP |
2128 | static int create_subvolume( |
2129 | Context *c, | |
2130 | Item *i, | |
2131 | const char *path) { | |
2132 | ||
254d1313 | 2133 | _cleanup_close_ int fd = -EBADF; |
f17a8d61 | 2134 | CreationMode creation; |
8f6fb95c | 2135 | struct stat st; |
4c39d899 FB |
2136 | int r, q = 0; |
2137 | ||
a5e4f3ab | 2138 | assert(c); |
4c39d899 FB |
2139 | assert(i); |
2140 | assert(IN_SET(i->type, CREATE_SUBVOLUME, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)); | |
2141 | ||
9e90d4f4 ZJS |
2142 | if (arg_dry_run) { |
2143 | log_info("Would create subvolume %s", path); | |
2144 | return 0; | |
2145 | } | |
2146 | ||
244c2a83 | 2147 | fd = create_directory_or_subvolume(path, i->mode, /* subvol = */ true, i->allow_failure, &st, &creation); |
4c39d899 FB |
2148 | if (fd == -EEXIST) |
2149 | return 0; | |
2150 | if (fd < 0) | |
2151 | return fd; | |
4ad36844 | 2152 | |
f17a8d61 FB |
2153 | if (creation == CREATION_NORMAL && |
2154 | IN_SET(i->type, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)) { | |
4c39d899 | 2155 | r = btrfs_subvol_auto_qgroup_fd(fd, 0, i->type == CREATE_SUBVOLUME_NEW_QUOTA); |
4ad36844 FB |
2156 | if (r == -ENOTTY) |
2157 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (unsupported fs or dir not a subvolume): %m", i->path); | |
2158 | else if (r == -EROFS) | |
2159 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (fs is read-only).", i->path); | |
4b019d2f | 2160 | else if (r == -ENOTCONN) |
4ad36844 FB |
2161 | log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (quota support is disabled).", i->path); |
2162 | else if (r < 0) | |
2163 | q = log_error_errno(r, "Failed to adjust quota for subvolume \"%s\": %m", i->path); | |
2164 | else if (r > 0) | |
2165 | log_debug("Adjusted quota for subvolume \"%s\".", i->path); | |
2166 | else if (r == 0) | |
2167 | log_debug("Quota for subvolume \"%s\" already in place, no change made.", i->path); | |
2168 | } | |
2169 | ||
a5e4f3ab | 2170 | r = fd_set_perms(c, i, fd, path, &st, creation); |
9d874aec | 2171 | if (q < 0) /* prefer the quota change error from above */ |
4ad36844 FB |
2172 | return q; |
2173 | ||
2174 | return r; | |
2175 | } | |
2176 | ||
a5e4f3ab LP |
2177 | static int empty_directory( |
2178 | Context *c, | |
2179 | Item *i, | |
2180 | const char *path, | |
2181 | CreationMode creation) { | |
2182 | ||
254d1313 | 2183 | _cleanup_close_ int fd = -EBADF; |
27f6aa0b | 2184 | struct stat st; |
54946021 FB |
2185 | int r; |
2186 | ||
a5e4f3ab | 2187 | assert(c); |
54946021 FB |
2188 | assert(i); |
2189 | assert(i->type == EMPTY_DIRECTORY); | |
2190 | ||
f461a28d | 2191 | r = chase(path, arg_root, CHASE_SAFE|CHASE_WARN, NULL, &fd); |
27f6aa0b | 2192 | if (r == -ENOLINK) /* Unsafe symlink: already covered by CHASE_WARN */ |
e56074a2 | 2193 | return r; |
54946021 | 2194 | if (r == -ENOENT) { |
27f6aa0b LP |
2195 | /* Option "e" operates only on existing objects. Do not print errors about non-existent files |
2196 | * or directories */ | |
2197 | log_debug_errno(r, "Skipping missing directory: %s", path); | |
54946021 FB |
2198 | return 0; |
2199 | } | |
2200 | if (r < 0) | |
27f6aa0b LP |
2201 | return log_error_errno(r, "Failed to open directory '%s': %m", path); |
2202 | ||
2203 | if (fstat(fd, &st) < 0) | |
2204 | return log_error_errno(errno, "Failed to fstat(%s): %m", path); | |
2205 | if (!S_ISDIR(st.st_mode)) { | |
2206 | log_warning("'%s' already exists and is not a directory.", path); | |
b88ba6c7 ZJS |
2207 | return 0; |
2208 | } | |
54946021 | 2209 | |
a5e4f3ab | 2210 | return fd_set_perms(c, i, fd, path, &st, creation); |
54946021 FB |
2211 | } |
2212 | ||
a5e4f3ab LP |
2213 | static int create_device( |
2214 | Context *c, | |
2215 | Item *i, | |
2216 | mode_t file_type) { | |
2217 | ||
254d1313 | 2218 | _cleanup_close_ int dfd = -EBADF, fd = -EBADF; |
4609d3bb | 2219 | _cleanup_free_ char *bn = NULL; |
074bd73f | 2220 | CreationMode creation; |
8f6fb95c | 2221 | struct stat st; |
074bd73f FB |
2222 | int r; |
2223 | ||
a5e4f3ab | 2224 | assert(c); |
074bd73f | 2225 | assert(i); |
a8ec0abe | 2226 | assert(IN_SET(i->type, CREATE_BLOCK_DEVICE, CREATE_CHAR_DEVICE)); |
074bd73f FB |
2227 | assert(IN_SET(file_type, S_IFBLK, S_IFCHR)); |
2228 | ||
4609d3bb LP |
2229 | r = path_extract_filename(i->path, &bn); |
2230 | if (r < 0) | |
2231 | return log_error_errno(r, "Failed to extract filename from path '%s': %m", i->path); | |
2232 | if (r == O_DIRECTORY) | |
ad36bb9f ZJS |
2233 | return log_error_errno(SYNTHETIC_ERRNO(EISDIR), |
2234 | "Cannot open path '%s' for creating device node, is a directory.", i->path); | |
c7700a77 | 2235 | |
9e90d4f4 ZJS |
2236 | if (arg_dry_run) { |
2237 | log_info("Would create device node %s", i->path); | |
2238 | return 0; | |
2239 | } | |
2240 | ||
4609d3bb LP |
2241 | /* Validate the path and use the returned directory fd for copying the target so we're sure that the |
2242 | * path can't be changed behind our back. */ | |
244c2a83 | 2243 | dfd = path_open_parent_safe(i->path, i->allow_failure); |
c7700a77 FB |
2244 | if (dfd < 0) |
2245 | return dfd; | |
2246 | ||
2053593f | 2247 | WITH_UMASK(0000) { |
074bd73f | 2248 | mac_selinux_create_file_prepare(i->path, file_type); |
05c4affe | 2249 | r = RET_NERRNO(mknodat(dfd, bn, i->mode | file_type, i->major_minor)); |
074bd73f FB |
2250 | mac_selinux_create_file_clear(); |
2251 | } | |
8f6fb95c | 2252 | creation = r >= 0 ? CREATION_NORMAL : CREATION_EXISTING; |
074bd73f | 2253 | |
8f6fb95c LP |
2254 | /* Try to open the inode via O_PATH, regardless if we could create it or not. Maybe everything is in |
2255 | * order anyway and we hence can ignore the error to create the device node */ | |
2256 | fd = openat(dfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); | |
2257 | if (fd < 0) { | |
2258 | /* OK, so opening the inode failed, let's look at the original error then. */ | |
c7700a77 | 2259 | |
8f6fb95c LP |
2260 | if (r < 0) { |
2261 | if (ERRNO_IS_PRIVILEGE(r)) | |
2262 | goto handle_privilege; | |
074bd73f | 2263 | |
8f6fb95c LP |
2264 | return log_error_errno(r, "Failed to create device node '%s': %m", i->path); |
2265 | } | |
074bd73f | 2266 | |
8f6fb95c LP |
2267 | return log_error_errno(errno, "Failed to open device node '%s' we just created: %m", i->path); |
2268 | } | |
074bd73f | 2269 | |
8f6fb95c LP |
2270 | if (fstat(fd, &st) < 0) |
2271 | return log_error_errno(errno, "Failed to fstat(%s): %m", i->path); | |
074bd73f | 2272 | |
8f6fb95c | 2273 | if (((st.st_mode ^ file_type) & S_IFMT) != 0) { |
074bd73f | 2274 | |
8f6fb95c LP |
2275 | if (i->append_or_force) { |
2276 | fd = safe_close(fd); | |
074bd73f | 2277 | |
2053593f | 2278 | WITH_UMASK(0000) { |
8f6fb95c LP |
2279 | mac_selinux_create_file_prepare(i->path, file_type); |
2280 | r = mknodat_atomic(dfd, bn, i->mode | file_type, i->major_minor); | |
2281 | mac_selinux_create_file_clear(); | |
2282 | } | |
2283 | if (ERRNO_IS_PRIVILEGE(r)) | |
2284 | goto handle_privilege; | |
2285 | if (IN_SET(r, -EISDIR, -EEXIST, -ENOTEMPTY)) { | |
2286 | r = rm_rf_child(dfd, bn, REMOVE_PHYSICAL); | |
074bd73f | 2287 | if (r < 0) |
8f6fb95c LP |
2288 | return log_error_errno(r, "rm -rf %s failed: %m", i->path); |
2289 | ||
2290 | mac_selinux_create_file_prepare(i->path, file_type); | |
2291 | r = RET_NERRNO(mknodat(dfd, bn, i->mode | file_type, i->major_minor)); | |
2292 | mac_selinux_create_file_clear(); | |
074bd73f | 2293 | } |
8f6fb95c LP |
2294 | if (r < 0) |
2295 | return log_error_errno(r, "Failed to create device node '%s': %m", i->path); | |
2296 | ||
2297 | fd = openat(dfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); | |
2298 | if (fd < 0) | |
2299 | return log_error_errno(errno, "Failed to open device node we just created '%s': %m", i->path); | |
2300 | ||
2301 | /* Validate type before change ownership below */ | |
2302 | if (fstat(fd, &st) < 0) | |
2303 | return log_error_errno(errno, "Failed to fstat(%s): %m", i->path); | |
2304 | ||
2305 | if (((st.st_mode ^ file_type) & S_IFMT) != 0) | |
ad36bb9f ZJS |
2306 | return log_error_errno(SYNTHETIC_ERRNO(EBADF), |
2307 | "Device node we just created is not a device node, refusing."); | |
8f6fb95c LP |
2308 | |
2309 | creation = CREATION_FORCE; | |
2310 | } else { | |
2311 | log_warning("\"%s\" already exists and is not a device node.", i->path); | |
2312 | return 0; | |
2313 | } | |
2314 | } | |
074bd73f FB |
2315 | |
2316 | log_debug("%s %s device node \"%s\" %u:%u.", | |
2317 | creation_mode_verb_to_string(creation), | |
2318 | i->type == CREATE_BLOCK_DEVICE ? "block" : "char", | |
2319 | i->path, major(i->mode), minor(i->mode)); | |
2320 | ||
a5e4f3ab | 2321 | return fd_set_perms(c, i, fd, i->path, &st, creation); |
c7700a77 | 2322 | |
8f6fb95c LP |
2323 | handle_privilege: |
2324 | log_debug_errno(r, | |
2325 | "We lack permissions, possibly because of cgroup configuration; " | |
2326 | "skipping creation of device node '%s'.", i->path); | |
2327 | return 0; | |
074bd73f FB |
2328 | } |
2329 | ||
a5e4f3ab | 2330 | static int create_fifo(Context *c, Item *i) { |
254d1313 | 2331 | _cleanup_close_ int pfd = -EBADF, fd = -EBADF; |
4609d3bb | 2332 | _cleanup_free_ char *bn = NULL; |
a2fc2f8d FB |
2333 | CreationMode creation; |
2334 | struct stat st; | |
2335 | int r; | |
2336 | ||
a5e4f3ab | 2337 | assert(c); |
8f6fb95c LP |
2338 | assert(i); |
2339 | assert(i->type == CREATE_FIFO); | |
2340 | ||
4609d3bb LP |
2341 | r = path_extract_filename(i->path, &bn); |
2342 | if (r < 0) | |
8f6fb95c | 2343 | return log_error_errno(r, "Failed to extract filename from path '%s': %m", i->path); |
4609d3bb | 2344 | if (r == O_DIRECTORY) |
ad36bb9f ZJS |
2345 | return log_error_errno(SYNTHETIC_ERRNO(EISDIR), |
2346 | "Cannot open path '%s' for creating FIFO, is a directory.", i->path); | |
4609d3bb | 2347 | |
9e90d4f4 ZJS |
2348 | if (arg_dry_run) { |
2349 | log_info("Would create fifo %s", i->path); | |
2350 | return 0; | |
2351 | } | |
2352 | ||
244c2a83 | 2353 | pfd = path_open_parent_safe(i->path, i->allow_failure); |
7ea5a87f FB |
2354 | if (pfd < 0) |
2355 | return pfd; | |
2356 | ||
2053593f | 2357 | WITH_UMASK(0000) { |
8f6fb95c | 2358 | mac_selinux_create_file_prepare(i->path, S_IFIFO); |
05c4affe | 2359 | r = RET_NERRNO(mkfifoat(pfd, bn, i->mode)); |
a2fc2f8d FB |
2360 | mac_selinux_create_file_clear(); |
2361 | } | |
2362 | ||
8f6fb95c | 2363 | creation = r >= 0 ? CREATION_NORMAL : CREATION_EXISTING; |
a2fc2f8d | 2364 | |
1751bdde | 2365 | /* Open the inode via O_PATH, regardless if we managed to create it or not. Maybe it is already the FIFO we want */ |
8f6fb95c LP |
2366 | fd = openat(pfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
2367 | if (fd < 0) { | |
2368 | if (r < 0) | |
2369 | return log_error_errno(r, "Failed to create FIFO %s: %m", i->path); /* original error! */ | |
a2fc2f8d | 2370 | |
8f6fb95c LP |
2371 | return log_error_errno(errno, "Failed to open FIFO we just created %s: %m", i->path); |
2372 | } | |
a2fc2f8d | 2373 | |
8f6fb95c LP |
2374 | if (fstat(fd, &st) < 0) |
2375 | return log_error_errno(errno, "Failed to fstat(%s): %m", i->path); | |
2376 | ||
2377 | if (!S_ISFIFO(st.st_mode)) { | |
a2fc2f8d | 2378 | |
8f6fb95c LP |
2379 | if (i->append_or_force) { |
2380 | fd = safe_close(fd); | |
2381 | ||
2053593f | 2382 | WITH_UMASK(0000) { |
8f6fb95c LP |
2383 | mac_selinux_create_file_prepare(i->path, S_IFIFO); |
2384 | r = mkfifoat_atomic(pfd, bn, i->mode); | |
2385 | mac_selinux_create_file_clear(); | |
2386 | } | |
2387 | if (IN_SET(r, -EISDIR, -EEXIST, -ENOTEMPTY)) { | |
2388 | r = rm_rf_child(pfd, bn, REMOVE_PHYSICAL); | |
a2fc2f8d | 2389 | if (r < 0) |
8f6fb95c LP |
2390 | return log_error_errno(r, "rm -rf %s failed: %m", i->path); |
2391 | ||
2392 | mac_selinux_create_file_prepare(i->path, S_IFIFO); | |
2393 | r = RET_NERRNO(mkfifoat(pfd, bn, i->mode)); | |
2394 | mac_selinux_create_file_clear(); | |
a2fc2f8d | 2395 | } |
8f6fb95c LP |
2396 | if (r < 0) |
2397 | return log_error_errno(r, "Failed to create FIFO %s: %m", i->path); | |
7ea5a87f | 2398 | |
8f6fb95c LP |
2399 | fd = openat(pfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); |
2400 | if (fd < 0) | |
2401 | return log_error_errno(errno, "Failed to open FIFO we just created '%s': %m", i->path); | |
a2fc2f8d | 2402 | |
8f6fb95c LP |
2403 | /* Validate type before change ownership below */ |
2404 | if (fstat(fd, &st) < 0) | |
2405 | return log_error_errno(errno, "Failed to fstat(%s): %m", i->path); | |
2406 | ||
2407 | if (!S_ISFIFO(st.st_mode)) | |
ad36bb9f ZJS |
2408 | return log_error_errno(SYNTHETIC_ERRNO(EBADF), |
2409 | "FIFO inode we just created is not a FIFO, refusing."); | |
8f6fb95c LP |
2410 | |
2411 | creation = CREATION_FORCE; | |
2412 | } else { | |
2413 | log_warning("\"%s\" already exists and is not a FIFO.", i->path); | |
2414 | return 0; | |
2415 | } | |
2416 | } | |
2417 | ||
2418 | log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation), i->path); | |
7ea5a87f | 2419 | |
a5e4f3ab | 2420 | return fd_set_perms(c, i, fd, i->path, &st, creation); |
a2fc2f8d FB |
2421 | } |
2422 | ||
a5e4f3ab | 2423 | static int create_symlink(Context *c, Item *i) { |
254d1313 | 2424 | _cleanup_close_ int pfd = -EBADF, fd = -EBADF; |
9e430ce3 LP |
2425 | _cleanup_free_ char *bn = NULL; |
2426 | CreationMode creation; | |
2427 | struct stat st; | |
2428 | bool good = false; | |
2429 | int r; | |
2430 | ||
a5e4f3ab | 2431 | assert(c); |
9e430ce3 LP |
2432 | assert(i); |
2433 | ||
2434 | r = path_extract_filename(i->path, &bn); | |
2435 | if (r < 0) | |
2436 | return log_error_errno(r, "Failed to extract filename from path '%s': %m", i->path); | |
2437 | if (r == O_DIRECTORY) | |
ad36bb9f ZJS |
2438 | return log_error_errno(SYNTHETIC_ERRNO(EISDIR), |
2439 | "Cannot open path '%s' for creating FIFO, is a directory.", i->path); | |
9e430ce3 | 2440 | |
9e90d4f4 ZJS |
2441 | if (arg_dry_run) { |
2442 | log_info("Would create symlink %s -> %s", i->path, i->argument); | |
2443 | return 0; | |
2444 | } | |
2445 | ||
244c2a83 | 2446 | pfd = path_open_parent_safe(i->path, i->allow_failure); |
9e430ce3 LP |
2447 | if (pfd < 0) |
2448 | return pfd; | |
2449 | ||
2450 | mac_selinux_create_file_prepare(i->path, S_IFLNK); | |
2451 | r = RET_NERRNO(symlinkat(i->argument, pfd, bn)); | |
2452 | mac_selinux_create_file_clear(); | |
2453 | ||
2454 | creation = r >= 0 ? CREATION_NORMAL : CREATION_EXISTING; | |
2455 | ||
2456 | fd = openat(pfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); | |
2457 | if (fd < 0) { | |
2458 | if (r < 0) | |
2459 | return log_error_errno(r, "Failed to create symlink '%s': %m", i->path); /* original error! */ | |
2460 | ||
2461 | return log_error_errno(errno, "Failed to open symlink we just created '%s': %m", i->path); | |
2462 | } | |
2463 | ||
2464 | if (fstat(fd, &st) < 0) | |
2465 | return log_error_errno(errno, "Failed to fstat(%s): %m", i->path); | |
2466 | ||
2467 | if (S_ISLNK(st.st_mode)) { | |
2468 | _cleanup_free_ char *x = NULL; | |
2469 | ||
2470 | r = readlinkat_malloc(fd, "", &x); | |
2471 | if (r < 0) | |
2472 | return log_error_errno(r, "readlinkat(%s) failed: %m", i->path); | |
2473 | ||
2474 | good = streq(x, i->argument); | |
2475 | } else | |
2476 | good = false; | |
2477 | ||
2478 | if (!good) { | |
2479 | if (!i->append_or_force) { | |
2480 | log_debug("\"%s\" is not a symlink or does not point to the correct path.", i->path); | |
2481 | return 0; | |
2482 | } | |
2483 | ||
2484 | fd = safe_close(fd); | |
2485 | ||
2486 | mac_selinux_create_file_prepare(i->path, S_IFLNK); | |
2487 | r = symlinkat_atomic_full(i->argument, pfd, bn, /* make_relative= */ false); | |
2488 | mac_selinux_create_file_clear(); | |
2489 | if (IN_SET(r, -EISDIR, -EEXIST, -ENOTEMPTY)) { | |
2490 | r = rm_rf_child(pfd, bn, REMOVE_PHYSICAL); | |
2491 | if (r < 0) | |
2492 | return log_error_errno(r, "rm -rf %s failed: %m", i->path); | |
2493 | ||
2494 | mac_selinux_create_file_prepare(i->path, S_IFLNK); | |
2495 | r = RET_NERRNO(symlinkat(i->argument, pfd, i->path)); | |
2496 | mac_selinux_create_file_clear(); | |
2497 | } | |
2498 | if (r < 0) | |
2499 | return log_error_errno(r, "symlink(%s, %s) failed: %m", i->argument, i->path); | |
2500 | ||
2501 | fd = openat(pfd, bn, O_NOFOLLOW|O_CLOEXEC|O_PATH); | |
2502 | if (fd < 0) | |
2503 | return log_error_errno(errno, "Failed to open symlink we just created '%s': %m", i->path); | |
2504 | ||
2505 | /* Validate type before change ownership below */ | |
2506 | if (fstat(fd, &st) < 0) | |
2507 | return log_error_errno(errno, "Failed to fstat(%s): %m", i->path); | |
2508 | ||
2509 | if (!S_ISLNK(st.st_mode)) | |
2510 | return log_error_errno(SYNTHETIC_ERRNO(EBADF), "Symlink we just created is not a symlink, refusing."); | |
2511 | ||
2512 | creation = CREATION_FORCE; | |
2513 | } | |
2514 | ||
2515 | log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation), i->path); | |
a5e4f3ab | 2516 | return fd_set_perms(c, i, fd, i->path, &st, creation); |
9e430ce3 LP |
2517 | } |
2518 | ||
a5e4f3ab LP |
2519 | typedef int (*action_t)(Context *c, Item *i, const char *path, CreationMode creation); |
2520 | typedef int (*fdaction_t)(Context *c, Item *i, int fd, const char *path, const struct stat *st, CreationMode creation); | |
a9bc518c LP |
2521 | |
2522 | static int item_do( | |
a5e4f3ab | 2523 | Context *c, |
a9bc518c LP |
2524 | Item *i, |
2525 | int fd, | |
2526 | const char *path, | |
2527 | CreationMode creation, | |
2528 | fdaction_t action) { | |
081043cf | 2529 | |
14f3480a | 2530 | struct stat st; |
936f6bdb | 2531 | int r = 0, q; |
e73a03e0 | 2532 | |
a5e4f3ab | 2533 | assert(c); |
e73a03e0 | 2534 | assert(i); |
4dc7bfdf | 2535 | assert(path); |
936f6bdb | 2536 | assert(fd >= 0); |
14f3480a FB |
2537 | |
2538 | if (fstat(fd, &st) < 0) { | |
09f12798 | 2539 | r = log_error_errno(errno, "fstat() on file failed: %m"); |
14f3480a FB |
2540 | goto finish; |
2541 | } | |
a8d88783 | 2542 | |
a9bc518c | 2543 | /* This returns the first error we run into, but nevertheless tries to go on */ |
a5e4f3ab | 2544 | r = action(c, i, fd, path, &st, creation); |
a8d88783 | 2545 | |
14f3480a | 2546 | if (S_ISDIR(st.st_mode)) { |
936f6bdb | 2547 | _cleanup_closedir_ DIR *d = NULL; |
a8d88783 | 2548 | |
ddb6eeaf LP |
2549 | /* The passed 'fd' was opened with O_PATH. We need to convert it into a 'regular' fd before |
2550 | * reading the directory content. */ | |
2551 | d = opendir(FORMAT_PROC_FD_PATH(fd)); | |
936f6bdb | 2552 | if (!d) { |
ddb6eeaf | 2553 | log_error_errno(errno, "Failed to opendir() '%s': %m", FORMAT_PROC_FD_PATH(fd)); |
09f12798 LP |
2554 | if (r == 0) |
2555 | r = -errno; | |
936f6bdb FB |
2556 | goto finish; |
2557 | } | |
a8d88783 | 2558 | |
936f6bdb | 2559 | FOREACH_DIRENT_ALL(de, d, q = -errno; goto finish) { |
936f6bdb | 2560 | int de_fd; |
a8d88783 | 2561 | |
936f6bdb FB |
2562 | if (dot_or_dot_dot(de->d_name)) |
2563 | continue; | |
2564 | ||
2565 | de_fd = openat(fd, de->d_name, O_NOFOLLOW|O_CLOEXEC|O_PATH); | |
9d874aec LP |
2566 | if (de_fd < 0) |
2567 | q = log_error_errno(errno, "Failed to open() file '%s': %m", de->d_name); | |
4dc7bfdf FB |
2568 | else { |
2569 | _cleanup_free_ char *de_path = NULL; | |
2570 | ||
62a85ee0 | 2571 | de_path = path_join(path, de->d_name); |
4dc7bfdf FB |
2572 | if (!de_path) |
2573 | q = log_oom(); | |
2574 | else | |
2575 | /* Pass ownership of dirent fd over */ | |
a5e4f3ab | 2576 | q = item_do(c, i, de_fd, de_path, CREATION_EXISTING, action); |
4dc7bfdf | 2577 | } |
a8d88783 | 2578 | |
e73a03e0 LP |
2579 | if (q < 0 && r == 0) |
2580 | r = q; | |
a8d88783 | 2581 | } |
a8d88783 | 2582 | } |
936f6bdb FB |
2583 | finish: |
2584 | safe_close(fd); | |
e73a03e0 | 2585 | return r; |
a8d88783 MS |
2586 | } |
2587 | ||
a5e4f3ab | 2588 | static int glob_item(Context *c, Item *i, action_t action) { |
df99a9ef | 2589 | _cleanup_globfree_ glob_t g = { |
ebf31a1f | 2590 | .gl_opendir = (void *(*)(const char *)) opendir_nomod, |
df99a9ef | 2591 | }; |
e73a03e0 | 2592 | int r = 0, k; |
99e68c0b | 2593 | |
a5e4f3ab LP |
2594 | assert(c); |
2595 | assert(i); | |
2596 | ||
84e72b5e ZJS |
2597 | k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g); |
2598 | if (k < 0 && k != -ENOENT) | |
2599 | return log_error_errno(k, "glob(%s) failed: %m", i->path); | |
99e68c0b | 2600 | |
c84a9488 | 2601 | STRV_FOREACH(fn, g.gl_pathv) { |
a9bc518c | 2602 | /* We pass CREATION_EXISTING here, since if we are globbing for it, it always has to exist */ |
a5e4f3ab | 2603 | k = action(c, i, *fn, CREATION_EXISTING); |
e73a03e0 | 2604 | if (k < 0 && r == 0) |
99e68c0b | 2605 | r = k; |
936f6bdb FB |
2606 | } |
2607 | ||
2608 | return r; | |
2609 | } | |
081043cf | 2610 | |
a5e4f3ab LP |
2611 | static int glob_item_recursively( |
2612 | Context *c, | |
2613 | Item *i, | |
2614 | fdaction_t action) { | |
2615 | ||
936f6bdb FB |
2616 | _cleanup_globfree_ glob_t g = { |
2617 | .gl_opendir = (void *(*)(const char *)) opendir_nomod, | |
2618 | }; | |
2619 | int r = 0, k; | |
936f6bdb FB |
2620 | |
2621 | k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g); | |
2622 | if (k < 0 && k != -ENOENT) | |
2623 | return log_error_errno(k, "glob(%s) failed: %m", i->path); | |
2624 | ||
2625 | STRV_FOREACH(fn, g.gl_pathv) { | |
254d1313 | 2626 | _cleanup_close_ int fd = -EBADF; |
936f6bdb FB |
2627 | |
2628 | /* Make sure we won't trigger/follow file object (such as | |
2629 | * device nodes, automounts, ...) pointed out by 'fn' with | |
2630 | * O_PATH. Note, when O_PATH is used, flags other than | |
2631 | * O_CLOEXEC, O_DIRECTORY, and O_NOFOLLOW are ignored. */ | |
2632 | ||
2633 | fd = open(*fn, O_CLOEXEC|O_NOFOLLOW|O_PATH); | |
2634 | if (fd < 0) { | |
09f12798 LP |
2635 | log_error_errno(errno, "Opening '%s' failed: %m", *fn); |
2636 | if (r == 0) | |
2637 | r = -errno; | |
936f6bdb FB |
2638 | continue; |
2639 | } | |
2640 | ||
a5e4f3ab | 2641 | k = item_do(c, i, fd, *fn, CREATION_EXISTING, action); |
936f6bdb FB |
2642 | if (k < 0 && r == 0) |
2643 | r = k; | |
2644 | ||
2645 | /* we passed fd ownership to the previous call */ | |
254d1313 | 2646 | fd = -EBADF; |
c84a9488 | 2647 | } |
99e68c0b | 2648 | |
99e68c0b MS |
2649 | return r; |
2650 | } | |
2651 | ||
c46c3233 AW |
2652 | static int rm_if_wrong_type_safe( |
2653 | mode_t mode, | |
2654 | int parent_fd, | |
21e43a7c | 2655 | const struct stat *parent_st, /* Only used if follow_links below is true. */ |
c46c3233 AW |
2656 | const char *name, |
2657 | int flags) { | |
2658 | _cleanup_free_ char *parent_name = NULL; | |
2659 | bool follow_links = !FLAGS_SET(flags, AT_SYMLINK_NOFOLLOW); | |
2660 | struct stat st; | |
2661 | int r; | |
2662 | ||
2663 | assert(name); | |
2664 | assert((mode & ~S_IFMT) == 0); | |
2665 | assert(!follow_links || parent_st); | |
2666 | assert((flags & ~AT_SYMLINK_NOFOLLOW) == 0); | |
2667 | ||
117aa014 ZJS |
2668 | if (mode == 0) |
2669 | return 0; | |
2670 | ||
c46c3233 AW |
2671 | if (!filename_is_valid(name)) |
2672 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "\"%s\" is not a valid filename.", name); | |
2673 | ||
2674 | r = fstatat_harder(parent_fd, name, &st, flags, REMOVE_CHMOD | REMOVE_CHMOD_RESTORE); | |
2675 | if (r < 0) { | |
2676 | (void) fd_get_path(parent_fd, &parent_name); | |
2677 | return log_full_errno(r == -ENOENT? LOG_DEBUG : LOG_ERR, r, | |
9e90d4f4 | 2678 | "Failed to stat \"%s/%s\": %m", parent_name ?: "...", name); |
c46c3233 AW |
2679 | } |
2680 | ||
2681 | /* Fail before removing anything if this is an unsafe transition. */ | |
2682 | if (follow_links && unsafe_transition(parent_st, &st)) { | |
2683 | (void) fd_get_path(parent_fd, &parent_name); | |
2684 | return log_error_errno(SYNTHETIC_ERRNO(ENOLINK), | |
9e90d4f4 | 2685 | "Unsafe transition from \"%s\" to \"%s\".", parent_name ?: "...", name); |
c46c3233 AW |
2686 | } |
2687 | ||
2688 | if ((st.st_mode & S_IFMT) == mode) | |
2689 | return 0; | |
2690 | ||
2691 | (void) fd_get_path(parent_fd, &parent_name); | |
9e90d4f4 | 2692 | log_notice("Wrong file type 0o%o; rm -rf \"%s/%s\"", st.st_mode & S_IFMT, parent_name ?: "...", name); |
c46c3233 AW |
2693 | |
2694 | /* If the target of the symlink was the wrong type, the link needs to be removed instead of the | |
2695 | * target, so make sure it is identified as a link and not a directory. */ | |
2696 | if (follow_links) { | |
2697 | r = fstatat_harder(parent_fd, name, &st, AT_SYMLINK_NOFOLLOW, REMOVE_CHMOD | REMOVE_CHMOD_RESTORE); | |
2698 | if (r < 0) | |
9e90d4f4 | 2699 | return log_error_errno(r, "Failed to stat \"%s/%s\": %m", parent_name ?: "...", name); |
c46c3233 AW |
2700 | } |
2701 | ||
2702 | /* Do not remove mount points. */ | |
2703 | r = fd_is_mount_point(parent_fd, name, follow_links ? AT_SYMLINK_FOLLOW : 0); | |
2704 | if (r < 0) | |
9e90d4f4 ZJS |
2705 | (void) log_warning_errno(r, "Failed to check if \"%s/%s\" is a mount point: %m; continuing.", |
2706 | parent_name ?: "...", name); | |
c46c3233 AW |
2707 | else if (r > 0) |
2708 | return log_error_errno(SYNTHETIC_ERRNO(EBUSY), | |
9e90d4f4 | 2709 | "Not removing \"%s/%s\" because it is a mount point.", parent_name ?: "...", name); |
c46c3233 | 2710 | |
9e90d4f4 ZJS |
2711 | log_action("Would remove", "Removing", "%s %s/%s", parent_name ?: "...", name); |
2712 | if (!arg_dry_run) { | |
2713 | if ((st.st_mode & S_IFMT) == S_IFDIR) { | |
2714 | _cleanup_close_ int child_fd = -EBADF; | |
c46c3233 | 2715 | |
9e90d4f4 ZJS |
2716 | child_fd = openat(parent_fd, name, O_NOCTTY | O_CLOEXEC | O_DIRECTORY); |
2717 | if (child_fd < 0) | |
2718 | return log_error_errno(errno, "Failed to open \"%s/%s\": %m", parent_name ?: "...", name); | |
c46c3233 | 2719 | |
9e90d4f4 ZJS |
2720 | r = rm_rf_children(TAKE_FD(child_fd), REMOVE_ROOT|REMOVE_SUBVOLUME|REMOVE_PHYSICAL, &st); |
2721 | if (r < 0) | |
2722 | return log_error_errno(r, "Failed to remove contents of \"%s/%s\": %m", parent_name ?: "...", name); | |
c46c3233 | 2723 | |
9e90d4f4 ZJS |
2724 | r = unlinkat_harder(parent_fd, name, AT_REMOVEDIR, REMOVE_CHMOD | REMOVE_CHMOD_RESTORE); |
2725 | } else | |
2726 | r = unlinkat_harder(parent_fd, name, 0, REMOVE_CHMOD | REMOVE_CHMOD_RESTORE); | |
2727 | if (r < 0) | |
2728 | return log_error_errno(r, "Failed to remove \"%s/%s\": %m", parent_name ?: "...", name); | |
2729 | } | |
c46c3233 | 2730 | |
9e90d4f4 ZJS |
2731 | /* This is covered by the log_notice "Wrong file type...". |
2732 | * It is logged earlier because it gives context to other error messages that might follow. */ | |
c46c3233 AW |
2733 | return -ENOENT; |
2734 | } | |
2735 | ||
2736 | /* If child_mode is non-zero, rm_if_wrong_type_safe will be executed for the last path component. */ | |
2737 | static int mkdir_parents_rm_if_wrong_type(mode_t child_mode, const char *path) { | |
254d1313 | 2738 | _cleanup_close_ int parent_fd = -EBADF; |
c46c3233 | 2739 | struct stat parent_st; |
c46c3233 | 2740 | size_t path_len; |
21e43a7c | 2741 | int r; |
c46c3233 AW |
2742 | |
2743 | assert(path); | |
2744 | assert((child_mode & ~S_IFMT) == 0); | |
2745 | ||
2746 | path_len = strlen(path); | |
2747 | ||
2748 | if (!is_path(path)) | |
2749 | /* rm_if_wrong_type_safe already logs errors. */ | |
117aa014 | 2750 | return rm_if_wrong_type_safe(child_mode, AT_FDCWD, NULL, path, AT_SYMLINK_NOFOLLOW); |
c46c3233 AW |
2751 | |
2752 | if (child_mode != 0 && endswith(path, "/")) | |
2753 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2754 | "Trailing path separators are only allowed if child_mode is not set; got \"%s\"", path); | |
2755 | ||
2756 | /* Get the parent_fd and stat. */ | |
c68cafba YW |
2757 | parent_fd = openat(AT_FDCWD, path_is_absolute(path) ? "/" : ".", O_NOCTTY | O_CLOEXEC | O_DIRECTORY); |
2758 | if (parent_fd < 0) | |
2759 | return log_error_errno(errno, "Failed to open root: %m"); | |
2760 | ||
c46c3233 AW |
2761 | if (fstat(parent_fd, &parent_st) < 0) |
2762 | return log_error_errno(errno, "Failed to stat root: %m"); | |
2763 | ||
2764 | /* Check every parent directory in the path, except the last component */ | |
21e43a7c | 2765 | for (const char *e = path;;) { |
254d1313 | 2766 | _cleanup_close_ int next_fd = -EBADF; |
c46c3233 | 2767 | char t[path_len + 1]; |
21e43a7c | 2768 | const char *s; |
c46c3233 AW |
2769 | |
2770 | /* Find the start of the next path component. */ | |
2771 | s = e + strspn(e, "/"); | |
2772 | /* Find the end of the next path component. */ | |
2773 | e = s + strcspn(s, "/"); | |
2774 | ||
2775 | /* Copy the path component to t so it can be a null terminated string. */ | |
2776 | *((char*) mempcpy(t, s, e - s)) = 0; | |
2777 | ||
2778 | /* Is this the last component? If so, then check the type */ | |
2779 | if (*e == 0) | |
117aa014 | 2780 | return rm_if_wrong_type_safe(child_mode, parent_fd, &parent_st, t, AT_SYMLINK_NOFOLLOW); |
c46c3233 | 2781 | |
21e43a7c YW |
2782 | r = rm_if_wrong_type_safe(S_IFDIR, parent_fd, &parent_st, t, 0); |
2783 | /* Remove dangling symlinks. */ | |
2784 | if (r == -ENOENT) | |
2785 | r = rm_if_wrong_type_safe(S_IFDIR, parent_fd, &parent_st, t, AT_SYMLINK_NOFOLLOW); | |
c46c3233 | 2786 | if (r == -ENOENT) { |
9e90d4f4 ZJS |
2787 | if (!arg_dry_run) { |
2788 | WITH_UMASK(0000) | |
2789 | r = mkdirat_label(parent_fd, t, 0755); | |
2790 | if (r < 0) { | |
2791 | _cleanup_free_ char *parent_name = NULL; | |
2792 | ||
2793 | (void) fd_get_path(parent_fd, &parent_name); | |
2794 | return log_error_errno(r, "Failed to mkdir \"%s\" at \"%s\": %m", t, strnull(parent_name)); | |
2795 | } | |
c46c3233 AW |
2796 | } |
2797 | } else if (r < 0) | |
2798 | /* rm_if_wrong_type_safe already logs errors. */ | |
2799 | return r; | |
2800 | ||
7c248223 | 2801 | next_fd = RET_NERRNO(openat(parent_fd, t, O_NOCTTY | O_CLOEXEC | O_DIRECTORY)); |
c46c3233 | 2802 | if (next_fd < 0) { |
21e43a7c YW |
2803 | _cleanup_free_ char *parent_name = NULL; |
2804 | ||
c46c3233 | 2805 | (void) fd_get_path(parent_fd, &parent_name); |
7c248223 | 2806 | return log_error_errno(next_fd, "Failed to open \"%s\" at \"%s\": %m", t, strnull(parent_name)); |
c46c3233 | 2807 | } |
7c248223 LP |
2808 | r = RET_NERRNO(fstat(next_fd, &parent_st)); |
2809 | if (r < 0) { | |
21e43a7c YW |
2810 | _cleanup_free_ char *parent_name = NULL; |
2811 | ||
c46c3233 | 2812 | (void) fd_get_path(parent_fd, &parent_name); |
21e43a7c | 2813 | return log_error_errno(r, "Failed to stat \"%s\" at \"%s\": %m", t, strnull(parent_name)); |
c46c3233 AW |
2814 | } |
2815 | ||
ee3455cf | 2816 | close_and_replace(parent_fd, next_fd); |
c46c3233 AW |
2817 | } |
2818 | } | |
2819 | ||
2820 | static int mkdir_parents_item(Item *i, mode_t child_mode) { | |
2821 | int r; | |
9e90d4f4 | 2822 | |
c46c3233 AW |
2823 | if (i->try_replace) { |
2824 | r = mkdir_parents_rm_if_wrong_type(child_mode, i->path); | |
2825 | if (r < 0 && r != -ENOENT) | |
2826 | return r; | |
2827 | } else | |
2053593f | 2828 | WITH_UMASK(0000) |
9e90d4f4 ZJS |
2829 | if (!arg_dry_run) |
2830 | (void) mkdir_parents_label(i->path, 0755); | |
c46c3233 AW |
2831 | |
2832 | return 0; | |
2833 | } | |
2834 | ||
a5e4f3ab | 2835 | static int create_item(Context *c, Item *i) { |
9e430ce3 | 2836 | int r; |
5008d581 | 2837 | |
a5e4f3ab | 2838 | assert(c); |
3b63d2d3 | 2839 | assert(i); |
5008d581 | 2840 | |
582deb84 ZJS |
2841 | log_debug("Running create action for entry %c %s", (char) i->type, i->path); |
2842 | ||
3b63d2d3 LP |
2843 | switch (i->type) { |
2844 | ||
2845 | case IGNORE_PATH: | |
78a92a5a | 2846 | case IGNORE_DIRECTORY_PATH: |
3b63d2d3 LP |
2847 | case REMOVE_PATH: |
2848 | case RECURSIVE_REMOVE_PATH: | |
2849 | return 0; | |
5008d581 | 2850 | |
eccebf4b | 2851 | case TRUNCATE_FILE: |
3b63d2d3 | 2852 | case CREATE_FILE: |
c46c3233 AW |
2853 | r = mkdir_parents_item(i, S_IFREG); |
2854 | if (r < 0) | |
2855 | return r; | |
7fa10748 | 2856 | |
eccebf4b | 2857 | if ((i->type == CREATE_FILE && i->append_or_force) || i->type == TRUNCATE_FILE) |
a5e4f3ab | 2858 | r = truncate_file(c, i, i->path); |
eccebf4b | 2859 | else |
a5e4f3ab | 2860 | r = create_file(c, i, i->path); |
5ec9d065 FB |
2861 | if (r < 0) |
2862 | return r; | |
2863 | break; | |
2864 | ||
7b887f22 | 2865 | case COPY_FILES: |
c46c3233 AW |
2866 | r = mkdir_parents_item(i, 0); |
2867 | if (r < 0) | |
2868 | return r; | |
7fa10748 | 2869 | |
a5e4f3ab | 2870 | r = copy_files(c, i); |
849958d1 LP |
2871 | if (r < 0) |
2872 | return r; | |
849958d1 LP |
2873 | break; |
2874 | ||
d4e9eb91 | 2875 | case WRITE_FILE: |
a5e4f3ab | 2876 | r = glob_item(c, i, write_one_file); |
f05bc3f7 MS |
2877 | if (r < 0) |
2878 | return r; | |
5008d581 | 2879 | |
3b63d2d3 LP |
2880 | break; |
2881 | ||
3b63d2d3 | 2882 | case CREATE_DIRECTORY: |
d7b8eec7 | 2883 | case TRUNCATE_DIRECTORY: |
c46c3233 AW |
2884 | r = mkdir_parents_item(i, S_IFDIR); |
2885 | if (r < 0) | |
2886 | return r; | |
4c39d899 | 2887 | |
a5e4f3ab | 2888 | r = create_directory(c, i, i->path); |
4c39d899 FB |
2889 | if (r < 0) |
2890 | return r; | |
2891 | break; | |
2892 | ||
d7b8eec7 | 2893 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
2894 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
2895 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
c46c3233 AW |
2896 | r = mkdir_parents_item(i, S_IFDIR); |
2897 | if (r < 0) | |
2898 | return r; | |
d7b8eec7 | 2899 | |
a5e4f3ab | 2900 | r = create_subvolume(c, i, i->path); |
4ad36844 FB |
2901 | if (r < 0) |
2902 | return r; | |
2903 | break; | |
5fb13eb5 | 2904 | |
df8dee85 | 2905 | case EMPTY_DIRECTORY: |
a5e4f3ab | 2906 | r = glob_item(c, i, empty_directory); |
f05bc3f7 MS |
2907 | if (r < 0) |
2908 | return r; | |
3b63d2d3 | 2909 | break; |
ee17ee7c LP |
2910 | |
2911 | case CREATE_FIFO: | |
c46c3233 AW |
2912 | r = mkdir_parents_item(i, S_IFIFO); |
2913 | if (r < 0) | |
2914 | return r; | |
7fa10748 | 2915 | |
a5e4f3ab | 2916 | r = create_fifo(c, i); |
f05bc3f7 MS |
2917 | if (r < 0) |
2918 | return r; | |
ee17ee7c | 2919 | break; |
a8d88783 | 2920 | |
9e430ce3 | 2921 | case CREATE_SYMLINK: |
c46c3233 AW |
2922 | r = mkdir_parents_item(i, S_IFLNK); |
2923 | if (r < 0) | |
2924 | return r; | |
7fa10748 | 2925 | |
a5e4f3ab | 2926 | r = create_symlink(c, i); |
9e430ce3 LP |
2927 | if (r < 0) |
2928 | return r; | |
a542c4dc | 2929 | |
468d726b | 2930 | break; |
468d726b LP |
2931 | |
2932 | case CREATE_BLOCK_DEVICE: | |
074bd73f | 2933 | case CREATE_CHAR_DEVICE: |
26c45a6c | 2934 | if (have_effective_cap(CAP_MKNOD) <= 0) { |
713998cf LP |
2935 | /* In a container we lack CAP_MKNOD. We shouldn't attempt to create the device node in that |
2936 | * case to avoid noise, and we don't support virtualized devices in containers anyway. */ | |
cb7ed9df LP |
2937 | |
2938 | log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path); | |
2939 | return 0; | |
2940 | } | |
2941 | ||
c46c3233 AW |
2942 | r = mkdir_parents_item(i, i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR); |
2943 | if (r < 0) | |
2944 | return r; | |
7fa10748 | 2945 | |
a5e4f3ab | 2946 | r = create_device(c, i, i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR); |
468d726b LP |
2947 | if (r < 0) |
2948 | return r; | |
2949 | ||
2950 | break; | |
468d726b | 2951 | |
e73a03e0 | 2952 | case ADJUST_MODE: |
777b87e7 | 2953 | case RELABEL_PATH: |
a5e4f3ab | 2954 | r = glob_item(c, i, path_set_perms); |
777b87e7 | 2955 | if (r < 0) |
96ca8194 | 2956 | return r; |
777b87e7 MS |
2957 | break; |
2958 | ||
a8d88783 | 2959 | case RECURSIVE_RELABEL_PATH: |
a5e4f3ab | 2960 | r = glob_item_recursively(c, i, fd_set_perms); |
a8d88783 MS |
2961 | if (r < 0) |
2962 | return r; | |
ebf4e801 | 2963 | break; |
e73a03e0 | 2964 | |
ebf4e801 | 2965 | case SET_XATTR: |
a5e4f3ab | 2966 | r = glob_item(c, i, path_set_xattrs); |
b705ab6a ZJS |
2967 | if (r < 0) |
2968 | return r; | |
2969 | break; | |
2970 | ||
2971 | case RECURSIVE_SET_XATTR: | |
a5e4f3ab | 2972 | r = glob_item_recursively(c, i, fd_set_xattrs); |
ebf4e801 MW |
2973 | if (r < 0) |
2974 | return r; | |
e73a03e0 | 2975 | break; |
f8eeeaf9 ZJS |
2976 | |
2977 | case SET_ACL: | |
a5e4f3ab | 2978 | r = glob_item(c, i, path_set_acls); |
f8eeeaf9 ZJS |
2979 | if (r < 0) |
2980 | return r; | |
b705ab6a ZJS |
2981 | break; |
2982 | ||
2983 | case RECURSIVE_SET_ACL: | |
a5e4f3ab | 2984 | r = glob_item_recursively(c, i, fd_set_acls); |
b705ab6a ZJS |
2985 | if (r < 0) |
2986 | return r; | |
2987 | break; | |
22c3a6ca | 2988 | |
88ec4dfa | 2989 | case SET_ATTRIBUTE: |
a5e4f3ab | 2990 | r = glob_item(c, i, path_set_attribute); |
22c3a6ca GB |
2991 | if (r < 0) |
2992 | return r; | |
2993 | break; | |
2994 | ||
88ec4dfa | 2995 | case RECURSIVE_SET_ATTRIBUTE: |
a5e4f3ab | 2996 | r = glob_item_recursively(c, i, fd_set_attribute); |
22c3a6ca GB |
2997 | if (r < 0) |
2998 | return r; | |
2999 | break; | |
3b63d2d3 LP |
3000 | } |
3001 | ||
f05bc3f7 | 3002 | return 0; |
3b63d2d3 LP |
3003 | } |
3004 | ||
b1935cc9 ZJS |
3005 | static int remove_recursive( |
3006 | Context *c, | |
3007 | Item *i, | |
3008 | const char *instance, | |
3009 | bool remove_instance) { | |
3010 | ||
3011 | _cleanup_closedir_ DIR *d = NULL; | |
3012 | STRUCT_STATX_DEFINE(sx); | |
3013 | bool mountpoint; | |
81a18380 LB |
3014 | int r; |
3015 | ||
b1935cc9 ZJS |
3016 | r = opendir_and_stat(instance, &d, &sx, &mountpoint); |
3017 | if (r < 0) | |
3018 | return r; | |
3019 | if (r == 0) { | |
3020 | if (remove_instance) { | |
9e90d4f4 ZJS |
3021 | log_action("Would remove", "Removing", "%s file \"%s\".", instance); |
3022 | if (!arg_dry_run && | |
3023 | remove(instance) < 0 && | |
3024 | errno != ENOENT) | |
b1935cc9 ZJS |
3025 | return log_error_errno(errno, "rm %s: %m", instance); |
3026 | } | |
3027 | return 0; | |
3028 | } | |
3029 | ||
3030 | r = dir_cleanup(c, i, instance, d, | |
3031 | /* self_atime_nsec= */ NSEC_INFINITY, | |
3032 | /* self_mtime_nsec= */ NSEC_INFINITY, | |
3033 | /* cutoff_nsec= */ NSEC_INFINITY, | |
3034 | sx.stx_dev_major, sx.stx_dev_minor, | |
3035 | mountpoint, | |
3036 | MAX_DEPTH, | |
3037 | /* keep_this_level= */ false, | |
3038 | /* age_by_file= */ 0, | |
3039 | /* age_by_dir= */ 0); | |
3040 | if (r < 0) | |
3041 | return r; | |
81a18380 | 3042 | |
b1935cc9 ZJS |
3043 | if (remove_instance) { |
3044 | log_debug("Removing directory \"%s\".", instance); | |
3045 | r = RET_NERRNO(rmdir(instance)); | |
3046 | if (r < 0 && !IN_SET(r, -ENOENT, -ENOTEMPTY)) | |
3047 | return log_error_errno(r, "Failed to remove %s: %m", instance); | |
3048 | } | |
81a18380 LB |
3049 | return 0; |
3050 | } | |
3051 | ||
b1935cc9 ZJS |
3052 | static int purge_item_instance(Context *c, Item *i, const char *instance, CreationMode creation) { |
3053 | return remove_recursive(c, i, instance, /* remove_instance= */ true); | |
3054 | } | |
81a18380 | 3055 | |
b1935cc9 | 3056 | static int purge_item(Context *c, Item *i) { |
81a18380 LB |
3057 | assert(i); |
3058 | ||
3059 | if (!needs_purge(i->type)) | |
3060 | return 0; | |
3061 | ||
b1935cc9 | 3062 | log_debug("Running purge action for entry %c %s", (char) i->type, i->path); |
81a18380 LB |
3063 | |
3064 | if (needs_glob(i->type)) | |
3065 | return glob_item(c, i, purge_item_instance); | |
3066 | ||
3067 | return purge_item_instance(c, i, i->path, CREATION_EXISTING); | |
3068 | } | |
3069 | ||
a5e4f3ab LP |
3070 | static int remove_item_instance( |
3071 | Context *c, | |
3072 | Item *i, | |
3073 | const char *instance, | |
3074 | CreationMode creation) { | |
3075 | ||
a5e4f3ab | 3076 | assert(c); |
3b63d2d3 LP |
3077 | assert(i); |
3078 | ||
3079 | switch (i->type) { | |
3080 | ||
3b63d2d3 | 3081 | case REMOVE_PATH: |
9e90d4f4 ZJS |
3082 | log_action("Would remove", "Removing", "%s \"%s\".", instance); |
3083 | if (!arg_dry_run && | |
3084 | remove(instance) < 0 && | |
3085 | errno != ENOENT) | |
b1935cc9 | 3086 | return log_error_errno(errno, "rm %s: %m", instance); |
3b63d2d3 | 3087 | |
b1935cc9 | 3088 | return 0; |
3b63d2d3 | 3089 | |
3b63d2d3 | 3090 | case RECURSIVE_REMOVE_PATH: |
b1935cc9 | 3091 | return remove_recursive(c, i, instance, /* remove_instance= */ true); |
7fcb4b9b ZJS |
3092 | |
3093 | default: | |
04499a70 | 3094 | assert_not_reached(); |
3b63d2d3 | 3095 | } |
3b63d2d3 LP |
3096 | } |
3097 | ||
a5e4f3ab | 3098 | static int remove_item(Context *c, Item *i) { |
a5e4f3ab | 3099 | assert(c); |
b8bb3e8f LP |
3100 | assert(i); |
3101 | ||
582deb84 ZJS |
3102 | log_debug("Running remove action for entry %c %s", (char) i->type, i->path); |
3103 | ||
b8bb3e8f LP |
3104 | switch (i->type) { |
3105 | ||
b8bb3e8f | 3106 | case TRUNCATE_DIRECTORY: |
b1935cc9 | 3107 | return remove_recursive(c, i, i->path, /* remove_instance= */ false); |
2c575977 LP |
3108 | |
3109 | case REMOVE_PATH: | |
99e68c0b | 3110 | case RECURSIVE_REMOVE_PATH: |
a5e4f3ab | 3111 | return glob_item(c, i, remove_item_instance); |
b8bb3e8f | 3112 | |
df8dee85 ZJS |
3113 | default: |
3114 | return 0; | |
3115 | } | |
b8bb3e8f LP |
3116 | } |
3117 | ||
7f7a50dd SK |
3118 | static char *age_by_to_string(AgeBy ab, bool is_dir) { |
3119 | static const char ab_map[] = { 'a', 'b', 'c', 'm' }; | |
3120 | size_t j = 0; | |
3121 | char *ret; | |
3122 | ||
3123 | ret = new(char, ELEMENTSOF(ab_map) + 1); | |
3124 | if (!ret) | |
3125 | return NULL; | |
3126 | ||
3127 | for (size_t i = 0; i < ELEMENTSOF(ab_map); i++) | |
3128 | if (FLAGS_SET(ab, 1U << i)) | |
3129 | ret[j++] = is_dir ? ascii_toupper(ab_map[i]) : ab_map[i]; | |
3130 | ||
3131 | ret[j] = 0; | |
3132 | return ret; | |
3133 | } | |
3134 | ||
a9bc518c | 3135 | static int clean_item_instance( |
a5e4f3ab | 3136 | Context *c, |
a9bc518c LP |
3137 | Item *i, |
3138 | const char* instance, | |
3139 | CreationMode creation) { | |
3140 | ||
78a92a5a MS |
3141 | assert(i); |
3142 | ||
3143 | if (!i->age_set) | |
3144 | return 0; | |
3145 | ||
7eeda1da | 3146 | usec_t n = now(CLOCK_REALTIME); |
78a92a5a MS |
3147 | if (n < i->age) |
3148 | return 0; | |
3149 | ||
7eeda1da | 3150 | usec_t cutoff = n - i->age; |
78a92a5a | 3151 | |
7eeda1da ZJS |
3152 | _cleanup_closedir_ DIR *d = NULL; |
3153 | STRUCT_STATX_DEFINE(sx); | |
3154 | bool mountpoint; | |
3155 | int r; | |
78a92a5a | 3156 | |
7eeda1da ZJS |
3157 | r = opendir_and_stat(instance, &d, &sx, &mountpoint); |
3158 | if (r <= 0) | |
3159 | return r; | |
78a92a5a | 3160 | |
7f7a50dd SK |
3161 | if (DEBUG_LOGGING) { |
3162 | _cleanup_free_ char *ab_f = NULL, *ab_d = NULL; | |
3163 | ||
3164 | ab_f = age_by_to_string(i->age_by_file, false); | |
3165 | if (!ab_f) | |
3166 | return log_oom(); | |
3167 | ||
3168 | ab_d = age_by_to_string(i->age_by_dir, true); | |
3169 | if (!ab_d) | |
3170 | return log_oom(); | |
3171 | ||
3172 | log_debug("Cleanup threshold for %s \"%s\" is %s; age-by: %s%s", | |
3173 | mountpoint ? "mount point" : "directory", | |
3174 | instance, | |
0086ef19 | 3175 | FORMAT_TIMESTAMP_STYLE(cutoff, TIMESTAMP_US), |
7f7a50dd SK |
3176 | ab_f, ab_d); |
3177 | } | |
582deb84 | 3178 | |
a5e4f3ab | 3179 | return dir_cleanup(c, i, instance, d, |
41fea218 AV |
3180 | statx_timestamp_load_nsec(&sx.stx_atime), |
3181 | statx_timestamp_load_nsec(&sx.stx_mtime), | |
ca194a2a | 3182 | cutoff * NSEC_PER_USEC, |
7eeda1da ZJS |
3183 | sx.stx_dev_major, sx.stx_dev_minor, |
3184 | mountpoint, | |
7f7a50dd SK |
3185 | MAX_DEPTH, i->keep_first_level, |
3186 | i->age_by_file, i->age_by_dir); | |
78a92a5a MS |
3187 | } |
3188 | ||
a5e4f3ab LP |
3189 | static int clean_item(Context *c, Item *i) { |
3190 | assert(c); | |
78a92a5a MS |
3191 | assert(i); |
3192 | ||
582deb84 ZJS |
3193 | log_debug("Running clean action for entry %c %s", (char) i->type, i->path); |
3194 | ||
78a92a5a | 3195 | switch (i->type) { |
a5e4f3ab | 3196 | |
78a92a5a | 3197 | case CREATE_DIRECTORY: |
9cb3204f | 3198 | case TRUNCATE_DIRECTORY: |
d7b8eec7 | 3199 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
3200 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
3201 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
849958d1 | 3202 | case COPY_FILES: |
a5e4f3ab | 3203 | clean_item_instance(c, i, i->path, CREATION_EXISTING); |
df8dee85 | 3204 | return 0; |
a5e4f3ab | 3205 | |
65241c14 | 3206 | case EMPTY_DIRECTORY: |
9cb3204f | 3207 | case IGNORE_PATH: |
78a92a5a | 3208 | case IGNORE_DIRECTORY_PATH: |
a5e4f3ab LP |
3209 | return glob_item(c, i, clean_item_instance); |
3210 | ||
78a92a5a | 3211 | default: |
df8dee85 | 3212 | return 0; |
78a92a5a | 3213 | } |
78a92a5a MS |
3214 | } |
3215 | ||
a5e4f3ab LP |
3216 | static int process_item( |
3217 | Context *c, | |
3218 | Item *i, | |
3219 | OperationMask operation) { | |
3220 | ||
811a1587 | 3221 | OperationMask todo; |
bd6d28f2 ZJS |
3222 | _cleanup_free_ char *_path = NULL; |
3223 | const char *path; | |
81a18380 | 3224 | int r; |
3b63d2d3 | 3225 | |
a5e4f3ab | 3226 | assert(c); |
3b63d2d3 LP |
3227 | assert(i); |
3228 | ||
811a1587 LP |
3229 | todo = operation & ~i->done; |
3230 | if (todo == 0) /* Everything already done? */ | |
1910cd0e LP |
3231 | return 0; |
3232 | ||
811a1587 | 3233 | i->done |= operation; |
1910cd0e | 3234 | |
bd6d28f2 ZJS |
3235 | path = i->path; |
3236 | if (string_is_glob(path)) { | |
3237 | /* We can't easily check whether a glob matches any autofs path, so let's do the check only | |
3238 | * for the non-glob part. */ | |
3239 | ||
3240 | r = glob_non_glob_prefix(path, &_path); | |
3241 | if (r < 0 && r != -ENOENT) | |
3242 | return log_debug_errno(r, "Failed to deglob path: %m"); | |
3243 | if (r >= 0) | |
3244 | path = _path; | |
3245 | } | |
3246 | ||
f461a28d | 3247 | r = chase(path, arg_root, CHASE_NO_AUTOFS|CHASE_NONEXISTENT|CHASE_WARN, NULL, NULL); |
21af3386 | 3248 | if (r == -EREMOTE) { |
bd6d28f2 | 3249 | log_notice_errno(r, "Skipping %s", i->path); /* We log the configured path, to not confuse the user. */ |
811a1587 | 3250 | return 0; |
145b8d0f FB |
3251 | } |
3252 | if (r < 0) | |
48d96904 | 3253 | log_debug_errno(r, "Failed to determine whether '%s' is below autofs, ignoring: %m", i->path); |
655f2da0 | 3254 | |
a5e4f3ab | 3255 | r = FLAGS_SET(operation, OPERATION_CREATE) ? create_item(c, i) : 0; |
6d7b5433 WD |
3256 | /* Failure can only be tolerated for create */ |
3257 | if (i->allow_failure) | |
3258 | r = 0; | |
3b63d2d3 | 3259 | |
81a18380 LB |
3260 | RET_GATHER(r, FLAGS_SET(operation, OPERATION_REMOVE) ? remove_item(c, i) : 0); |
3261 | RET_GATHER(r, FLAGS_SET(operation, OPERATION_CLEAN) ? clean_item(c, i) : 0); | |
3262 | RET_GATHER(r, FLAGS_SET(operation, OPERATION_PURGE) ? purge_item(c, i) : 0); | |
1a967b6b | 3263 | |
81a18380 | 3264 | return r; |
3b63d2d3 LP |
3265 | } |
3266 | ||
a5e4f3ab LP |
3267 | static int process_item_array( |
3268 | Context *c, | |
3269 | ItemArray *array, | |
3270 | OperationMask operation) { | |
3271 | ||
96d10d78 | 3272 | int r = 0; |
753615e8 | 3273 | |
a5e4f3ab | 3274 | assert(c); |
3f93da98 ZJS |
3275 | assert(array); |
3276 | ||
811a1587 LP |
3277 | /* Create any parent first. */ |
3278 | if (FLAGS_SET(operation, OPERATION_CREATE) && array->parent) | |
a5e4f3ab | 3279 | r = process_item_array(c, array->parent, operation & OPERATION_CREATE); |
811a1587 LP |
3280 | |
3281 | /* Clean up all children first */ | |
81a18380 | 3282 | if ((operation & (OPERATION_REMOVE|OPERATION_CLEAN|OPERATION_PURGE)) && !set_isempty(array->children)) { |
a5e4f3ab | 3283 | ItemArray *cc; |
811a1587 | 3284 | |
e5876c29 ZJS |
3285 | SET_FOREACH(cc, array->children) |
3286 | RET_GATHER(r, process_item_array(c, cc, operation & (OPERATION_REMOVE|OPERATION_CLEAN|OPERATION_PURGE))); | |
811a1587 LP |
3287 | } |
3288 | ||
e5876c29 ZJS |
3289 | FOREACH_ARRAY(item, array->items, array->n_items) |
3290 | RET_GATHER(r, process_item(c, item, operation)); | |
3f93da98 ZJS |
3291 | |
3292 | return r; | |
3293 | } | |
3b63d2d3 | 3294 | |
3f93da98 ZJS |
3295 | static void item_free_contents(Item *i) { |
3296 | assert(i); | |
3b63d2d3 | 3297 | free(i->path); |
468d726b | 3298 | free(i->argument); |
708daf42 | 3299 | free(i->binary_argument); |
ebf4e801 | 3300 | strv_free(i->xattrs); |
f8eeeaf9 | 3301 | |
349cc4a5 | 3302 | #if HAVE_ACL |
9f804ab0 SJ |
3303 | if (i->acl_access) |
3304 | acl_free(i->acl_access); | |
3305 | ||
26d98cdd MY |
3306 | if (i->acl_access_exec) |
3307 | acl_free(i->acl_access_exec); | |
3308 | ||
9f804ab0 SJ |
3309 | if (i->acl_default) |
3310 | acl_free(i->acl_default); | |
f8eeeaf9 | 3311 | #endif |
3b63d2d3 LP |
3312 | } |
3313 | ||
87938c3b | 3314 | static ItemArray* item_array_free(ItemArray *a) { |
3f93da98 | 3315 | if (!a) |
87938c3b | 3316 | return NULL; |
3f93da98 | 3317 | |
e5876c29 ZJS |
3318 | FOREACH_ARRAY(item, a->items, a->n_items) |
3319 | item_free_contents(item); | |
96d10d78 | 3320 | |
811a1587 | 3321 | set_free(a->children); |
3f93da98 | 3322 | free(a->items); |
87938c3b | 3323 | return mfree(a); |
3f93da98 | 3324 | } |
e2f2fb78 | 3325 | |
93bab288 | 3326 | static int item_compare(const Item *a, const Item *b) { |
17493fa5 LP |
3327 | /* Make sure that the ownership taking item is put first, so |
3328 | * that we first create the node, and then can adjust it */ | |
3329 | ||
93bab288 | 3330 | if (takes_ownership(a->type) && !takes_ownership(b->type)) |
17493fa5 | 3331 | return -1; |
93bab288 | 3332 | if (!takes_ownership(a->type) && takes_ownership(b->type)) |
17493fa5 LP |
3333 | return 1; |
3334 | ||
93bab288 | 3335 | return CMP(a->type, b->type); |
17493fa5 LP |
3336 | } |
3337 | ||
a6aafd6a | 3338 | static bool item_compatible(const Item *a, const Item *b) { |
bfe95f35 LP |
3339 | assert(a); |
3340 | assert(b); | |
3f93da98 | 3341 | assert(streq(a->path, b->path)); |
bfe95f35 | 3342 | |
3f93da98 ZJS |
3343 | if (takes_ownership(a->type) && takes_ownership(b->type)) |
3344 | /* check if the items are the same */ | |
708daf42 LP |
3345 | return memcmp_nn(item_binary_argument(a), item_binary_argument_size(a), |
3346 | item_binary_argument(b), item_binary_argument_size(b)) == 0 && | |
bfe95f35 | 3347 | |
3f93da98 ZJS |
3348 | a->uid_set == b->uid_set && |
3349 | a->uid == b->uid && | |
cc43328c | 3350 | a->uid_only_create == b->uid_only_create && |
bfe95f35 | 3351 | |
3f93da98 ZJS |
3352 | a->gid_set == b->gid_set && |
3353 | a->gid == b->gid && | |
cc43328c | 3354 | a->gid_only_create == b->gid_only_create && |
bfe95f35 | 3355 | |
3f93da98 ZJS |
3356 | a->mode_set == b->mode_set && |
3357 | a->mode == b->mode && | |
cc43328c | 3358 | a->mode_only_create == b->mode_only_create && |
bfe95f35 | 3359 | |
3f93da98 ZJS |
3360 | a->age_set == b->age_set && |
3361 | a->age == b->age && | |
bfe95f35 | 3362 | |
7f7a50dd SK |
3363 | a->age_by_file == b->age_by_file && |
3364 | a->age_by_dir == b->age_by_dir && | |
3365 | ||
3f93da98 | 3366 | a->mask_perms == b->mask_perms && |
bfe95f35 | 3367 | |
3f93da98 | 3368 | a->keep_first_level == b->keep_first_level && |
468d726b | 3369 | |
3f93da98 | 3370 | a->major_minor == b->major_minor; |
468d726b | 3371 | |
bfe95f35 LP |
3372 | return true; |
3373 | } | |
3374 | ||
a2aced4a | 3375 | static bool should_include_path(const char *path) { |
abef3f91 | 3376 | STRV_FOREACH(prefix, arg_exclude_prefixes) |
582deb84 ZJS |
3377 | if (path_startswith(path, *prefix)) { |
3378 | log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.", | |
3379 | path, *prefix); | |
5c795114 | 3380 | return false; |
582deb84 | 3381 | } |
a2aced4a | 3382 | |
abef3f91 | 3383 | STRV_FOREACH(prefix, arg_include_prefixes) |
582deb84 ZJS |
3384 | if (path_startswith(path, *prefix)) { |
3385 | log_debug("Entry \"%s\" matches include prefix \"%s\".", path, *prefix); | |
a2aced4a | 3386 | return true; |
582deb84 | 3387 | } |
a2aced4a | 3388 | |
6b000af4 | 3389 | /* no matches, so we should include this path only if we have no allow list at all */ |
7b943bb7 | 3390 | if (strv_isempty(arg_include_prefixes)) |
582deb84 ZJS |
3391 | return true; |
3392 | ||
3393 | log_debug("Entry \"%s\" does not match any include prefix, skipping.", path); | |
3394 | return false; | |
a2aced4a DR |
3395 | } |
3396 | ||
172e9cc3 | 3397 | static int specifier_expansion_from_arg(const Specifier *specifier_table, Item *i) { |
4cef1923 FB |
3398 | int r; |
3399 | ||
3400 | assert(i); | |
3401 | ||
4e361acc | 3402 | if (!i->argument) |
4cef1923 FB |
3403 | return 0; |
3404 | ||
3405 | switch (i->type) { | |
3406 | case COPY_FILES: | |
3407 | case CREATE_SYMLINK: | |
3408 | case CREATE_FILE: | |
3409 | case TRUNCATE_FILE: | |
e437538f ZJS |
3410 | case WRITE_FILE: { |
3411 | _cleanup_free_ char *unescaped = NULL, *resolved = NULL; | |
3412 | ssize_t l; | |
3413 | ||
3414 | l = cunescape(i->argument, 0, &unescaped); | |
3415 | if (l < 0) | |
3416 | return log_error_errno(l, "Failed to unescape parameter to write: %s", i->argument); | |
4cef1923 | 3417 | |
de61a04b | 3418 | r = specifier_printf(unescaped, PATH_MAX-1, specifier_table, arg_root, NULL, &resolved); |
4cef1923 FB |
3419 | if (r < 0) |
3420 | return r; | |
3421 | ||
e437538f ZJS |
3422 | return free_and_replace(i->argument, resolved); |
3423 | } | |
4cef1923 | 3424 | case SET_XATTR: |
de010b0b | 3425 | case RECURSIVE_SET_XATTR: |
dfe01841 | 3426 | STRV_FOREACH(xattr, i->xattrs) { |
e437538f ZJS |
3427 | _cleanup_free_ char *resolved = NULL; |
3428 | ||
de61a04b | 3429 | r = specifier_printf(*xattr, SIZE_MAX, specifier_table, arg_root, NULL, &resolved); |
4cef1923 FB |
3430 | if (r < 0) |
3431 | return r; | |
3432 | ||
3433 | free_and_replace(*xattr, resolved); | |
3434 | } | |
e437538f | 3435 | return 0; |
de010b0b | 3436 | |
4cef1923 | 3437 | default: |
e437538f | 3438 | return 0; |
4cef1923 | 3439 | } |
4cef1923 FB |
3440 | } |
3441 | ||
a2d1fb88 LP |
3442 | static int patch_var_run(const char *fname, unsigned line, char **path) { |
3443 | const char *k; | |
3444 | char *n; | |
3445 | ||
3446 | assert(path); | |
3447 | assert(*path); | |
3448 | ||
ad36bb9f ZJS |
3449 | /* Optionally rewrites lines referencing /var/run/, to use /run/ instead. Why bother? tmpfiles merges |
3450 | * lines in some cases and detects conflicts in others. If files/directories are specified through | |
3451 | * two equivalent lines this is problematic as neither case will be detected. Ideally we'd detect | |
3452 | * these cases by resolving symlinks early, but that's precisely not what we can do here as this code | |
3453 | * very likely is running very early on, at a time where the paths in question are not available yet, | |
3454 | * or even more importantly, our own tmpfiles rules might create the paths that are intermediary to | |
3455 | * the listed paths. We can't really cover the generic case, but the least we can do is cover the | |
3456 | * specific case of /var/run vs. /run, as /var/run is a legacy name for /run only, and we explicitly | |
3457 | * document that and require that on systemd systems the former is a symlink to the latter. Moreover | |
3458 | * files below this path are by far the primary use case for tmpfiles.d/. */ | |
a2d1fb88 LP |
3459 | |
3460 | k = path_startswith(*path, "/var/run/"); | |
ad36bb9f ZJS |
3461 | if (isempty(k)) /* Don't complain about paths other than under /var/run, |
3462 | * and not about /var/run itself either. */ | |
a2d1fb88 LP |
3463 | return 0; |
3464 | ||
2d9b74ba | 3465 | n = path_join("/run", k); |
a2d1fb88 LP |
3466 | if (!n) |
3467 | return log_oom(); | |
3468 | ||
ad36bb9f ZJS |
3469 | /* Also log about this briefly. We do so at LOG_NOTICE level, as we fixed up the situation |
3470 | * automatically, hence there's no immediate need for action by the user. However, in the interest of | |
3471 | * making things less confusing to the user, let's still inform the user that these snippets should | |
3472 | * really be updated. */ | |
b88ba6c7 ZJS |
3473 | log_syntax(NULL, LOG_NOTICE, fname, line, 0, |
3474 | "Line references path below legacy directory /var/run/, updating %s → %s; please update the tmpfiles.d/ drop-in file accordingly.", | |
3475 | *path, n); | |
a2d1fb88 | 3476 | |
81fa4479 | 3477 | free_and_replace(*path, n); |
a2d1fb88 LP |
3478 | |
3479 | return 0; | |
3480 | } | |
3481 | ||
a3451c2c LP |
3482 | static int find_uid(const char *user, uid_t *ret_uid, Hashmap **cache) { |
3483 | int r; | |
3484 | ||
3485 | assert(user); | |
3486 | assert(ret_uid); | |
3487 | ||
3488 | /* First: parse as numeric UID string */ | |
3489 | r = parse_uid(user, ret_uid); | |
3490 | if (r >= 0) | |
3491 | return r; | |
3492 | ||
3493 | /* Second: pass to NSS if we are running "online" */ | |
3494 | if (!arg_root) | |
3495 | return get_user_creds(&user, ret_uid, NULL, NULL, NULL, 0); | |
3496 | ||
3497 | /* Third, synthesize "root" unconditionally */ | |
3498 | if (streq(user, "root")) { | |
3499 | *ret_uid = 0; | |
3500 | return 0; | |
3501 | } | |
3502 | ||
3503 | /* Fourth: use fgetpwent() to read /etc/passwd directly, if we are "offline" */ | |
3504 | return name_to_uid_offline(arg_root, user, ret_uid, cache); | |
3505 | } | |
3506 | ||
3507 | static int find_gid(const char *group, gid_t *ret_gid, Hashmap **cache) { | |
3508 | int r; | |
3509 | ||
3510 | assert(group); | |
3511 | assert(ret_gid); | |
3512 | ||
3513 | /* First: parse as numeric GID string */ | |
3514 | r = parse_gid(group, ret_gid); | |
3515 | if (r >= 0) | |
3516 | return r; | |
3517 | ||
3518 | /* Second: pass to NSS if we are running "online" */ | |
3519 | if (!arg_root) | |
3520 | return get_group_creds(&group, ret_gid, 0); | |
3521 | ||
3522 | /* Third, synthesize "root" unconditionally */ | |
3523 | if (streq(group, "root")) { | |
3524 | *ret_gid = 0; | |
3525 | return 0; | |
3526 | } | |
3527 | ||
3528 | /* Fourth: use fgetgrent() to read /etc/group directly, if we are "offline" */ | |
3529 | return name_to_gid_offline(arg_root, group, ret_gid, cache); | |
3530 | } | |
3531 | ||
7f7a50dd SK |
3532 | static int parse_age_by_from_arg(const char *age_by_str, Item *item) { |
3533 | AgeBy ab_f = 0, ab_d = 0; | |
3534 | ||
3535 | static const struct { | |
3536 | char age_by_chr; | |
3537 | AgeBy age_by_flag; | |
3538 | } age_by_types[] = { | |
3539 | { 'a', AGE_BY_ATIME }, | |
3540 | { 'b', AGE_BY_BTIME }, | |
3541 | { 'c', AGE_BY_CTIME }, | |
3542 | { 'm', AGE_BY_MTIME }, | |
3543 | }; | |
3544 | ||
3545 | assert(age_by_str); | |
3546 | assert(item); | |
3547 | ||
3548 | if (isempty(age_by_str)) | |
3549 | return -EINVAL; | |
3550 | ||
3551 | for (const char *s = age_by_str; *s != 0; s++) { | |
3552 | size_t i; | |
3553 | ||
3554 | /* Ignore whitespace. */ | |
3555 | if (strchr(WHITESPACE, *s)) | |
3556 | continue; | |
3557 | ||
3558 | for (i = 0; i < ELEMENTSOF(age_by_types); i++) { | |
3559 | /* Check lower-case for files, upper-case for directories. */ | |
3560 | if (*s == age_by_types[i].age_by_chr) { | |
3561 | ab_f |= age_by_types[i].age_by_flag; | |
3562 | break; | |
3563 | } else if (*s == ascii_toupper(age_by_types[i].age_by_chr)) { | |
3564 | ab_d |= age_by_types[i].age_by_flag; | |
3565 | break; | |
3566 | } | |
3567 | } | |
3568 | ||
3569 | /* Invalid character. */ | |
3570 | if (i >= ELEMENTSOF(age_by_types)) | |
3571 | return -EINVAL; | |
3572 | } | |
3573 | ||
3574 | /* No match. */ | |
3575 | if (ab_f == 0 && ab_d == 0) | |
3576 | return -EINVAL; | |
3577 | ||
3578 | item->age_by_file = ab_f > 0 ? ab_f : AGE_BY_DEFAULT_FILE; | |
3579 | item->age_by_dir = ab_d > 0 ? ab_d : AGE_BY_DEFAULT_DIR; | |
3580 | ||
3581 | return 0; | |
3582 | } | |
3583 | ||
a6aafd6a | 3584 | static bool is_duplicated_item(ItemArray *existing, const Item *i) { |
9af74e0f FB |
3585 | assert(existing); |
3586 | assert(i); | |
3587 | ||
e5876c29 | 3588 | FOREACH_ARRAY(e, existing->items, existing->n_items) { |
9af74e0f FB |
3589 | if (item_compatible(e, i)) |
3590 | continue; | |
3591 | ||
3592 | /* Only multiple 'w+' lines for the same path are allowed. */ | |
3593 | if (e->type != WRITE_FILE || !e->append_or_force || | |
3594 | i->type != WRITE_FILE || !i->append_or_force) | |
3595 | return true; | |
3596 | } | |
3597 | ||
3598 | return false; | |
3599 | } | |
3600 | ||
a3451c2c LP |
3601 | static int parse_line( |
3602 | const char *fname, | |
3603 | unsigned line, | |
3604 | const char *buffer, | |
f6a1346e ZJS |
3605 | bool *invalid_config, |
3606 | void *context) { | |
1731e34a | 3607 | |
f6a1346e | 3608 | Context *c = ASSERT_PTR(context); |
cde684a2 | 3609 | _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL; |
7f7a50dd SK |
3610 | _cleanup_(item_free_contents) Item i = { |
3611 | /* The "age-by" argument considers all file timestamp types by default. */ | |
3612 | .age_by_file = AGE_BY_DEFAULT_FILE, | |
3613 | .age_by_dir = AGE_BY_DEFAULT_DIR, | |
3614 | }; | |
3f93da98 | 3615 | ItemArray *existing; |
ef43a391 | 3616 | OrderedHashmap *h; |
e0ea6af3 ZJS |
3617 | bool append_or_force = false, boot = false, allow_failure = false, try_replace = false, |
3618 | unbase64 = false, from_cred = false, missing_user_or_group = false; | |
e5876c29 | 3619 | int r; |
3b63d2d3 LP |
3620 | |
3621 | assert(fname); | |
3622 | assert(line >= 1); | |
3623 | assert(buffer); | |
3624 | ||
172e9cc3 ZJS |
3625 | const Specifier specifier_table[] = { |
3626 | { 'a', specifier_architecture, NULL }, | |
3627 | { 'b', specifier_boot_id, NULL }, | |
3628 | { 'B', specifier_os_build_id, NULL }, | |
9a5893e9 ZJS |
3629 | { 'H', specifier_hostname, NULL }, |
3630 | { 'l', specifier_short_hostname, NULL }, | |
6db98098 | 3631 | { 'm', specifier_machine_id, NULL }, |
172e9cc3 ZJS |
3632 | { 'o', specifier_os_id, NULL }, |
3633 | { 'v', specifier_kernel_release, NULL }, | |
3634 | { 'w', specifier_os_version_id, NULL }, | |
3635 | { 'W', specifier_os_variant_id, NULL }, | |
3636 | ||
3637 | { 'h', specifier_user_home, NULL }, | |
3638 | ||
3639 | { 'C', specifier_directory, UINT_TO_PTR(DIRECTORY_CACHE) }, | |
3640 | { 'L', specifier_directory, UINT_TO_PTR(DIRECTORY_LOGS) }, | |
3641 | { 'S', specifier_directory, UINT_TO_PTR(DIRECTORY_STATE) }, | |
3642 | { 't', specifier_directory, UINT_TO_PTR(DIRECTORY_RUNTIME) }, | |
3643 | ||
4870133b | 3644 | COMMON_CREDS_SPECIFIERS(arg_runtime_scope), |
172e9cc3 ZJS |
3645 | COMMON_TMP_SPECIFIERS, |
3646 | {} | |
3647 | }; | |
3648 | ||
68685607 | 3649 | r = extract_many_words( |
4034a06d | 3650 | &buffer, |
68685607 | 3651 | NULL, |
4b6621fe | 3652 | EXTRACT_UNQUOTE | EXTRACT_CUNESCAPE, |
4034a06d LP |
3653 | &action, |
3654 | &path, | |
3655 | &mode, | |
3656 | &user, | |
3657 | &group, | |
3658 | &age, | |
3659 | NULL); | |
d9daae55 | 3660 | if (r < 0) { |
751223fe ZJS |
3661 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
3662 | /* invalid quoting and such or an unknown specifier */ | |
d9daae55 | 3663 | *invalid_config = true; |
d02933fd | 3664 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to parse line: %m"); |
4b93699d | 3665 | } else if (r < 2) { |
d9daae55 | 3666 | *invalid_config = true; |
d02933fd | 3667 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), "Syntax error."); |
5008d581 LP |
3668 | } |
3669 | ||
e7b88b7b | 3670 | if (!empty_or_dash(buffer)) { |
4034a06d LP |
3671 | i.argument = strdup(buffer); |
3672 | if (!i.argument) | |
3673 | return log_oom(); | |
3674 | } | |
3675 | ||
2e78fa79 | 3676 | if (isempty(action)) { |
d9daae55 | 3677 | *invalid_config = true; |
ad36bb9f ZJS |
3678 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3679 | "Command too short '%s'.", action); | |
2e78fa79 LP |
3680 | } |
3681 | ||
e5876c29 | 3682 | for (int pos = 1; action[pos]; pos++) |
5f255144 ZJS |
3683 | if (action[pos] == '!' && !boot) |
3684 | boot = true; | |
c55ac248 ZS |
3685 | else if (action[pos] == '+' && !append_or_force) |
3686 | append_or_force = true; | |
6d7b5433 WD |
3687 | else if (action[pos] == '-' && !allow_failure) |
3688 | allow_failure = true; | |
c46c3233 AW |
3689 | else if (action[pos] == '=' && !try_replace) |
3690 | try_replace = true; | |
708daf42 LP |
3691 | else if (action[pos] == '~' && !unbase64) |
3692 | unbase64 = true; | |
e52f6f63 LP |
3693 | else if (action[pos] == '^' && !from_cred) |
3694 | from_cred = true; | |
5f255144 | 3695 | else { |
d9daae55 | 3696 | *invalid_config = true; |
ad36bb9f ZJS |
3697 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3698 | "Unknown modifiers in command '%s'.", action); | |
5f255144 | 3699 | } |
2e78fa79 | 3700 | |
582deb84 | 3701 | if (boot && !arg_boot) { |
ad36bb9f ZJS |
3702 | log_syntax(NULL, LOG_DEBUG, fname, line, 0, |
3703 | "Ignoring entry %s \"%s\" because --boot is not specified.", action, path); | |
c4708f13 | 3704 | return 0; |
582deb84 | 3705 | } |
c4708f13 | 3706 | |
3f93da98 | 3707 | i.type = action[0]; |
c55ac248 | 3708 | i.append_or_force = append_or_force; |
6d7b5433 | 3709 | i.allow_failure = allow_failure; |
c46c3233 | 3710 | i.try_replace = try_replace; |
2e78fa79 | 3711 | |
de61a04b | 3712 | r = specifier_printf(path, PATH_MAX-1, specifier_table, arg_root, NULL, &i.path); |
6db98098 | 3713 | if (ERRNO_IS_NOINFO(r)) |
4cef1923 | 3714 | return log_unresolvable_specifier(fname, line); |
d9daae55 | 3715 | if (r < 0) { |
751223fe ZJS |
3716 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
3717 | *invalid_config = true; | |
ad36bb9f ZJS |
3718 | return log_syntax(NULL, LOG_ERR, fname, line, r, |
3719 | "Failed to replace specifiers in '%s': %m", path); | |
d9daae55 | 3720 | } |
1731e34a | 3721 | |
a2d1fb88 LP |
3722 | r = patch_var_run(fname, line, &i.path); |
3723 | if (r < 0) | |
3724 | return r; | |
3725 | ||
35c18a51 LP |
3726 | if (!path_is_absolute(i.path)) { |
3727 | *invalid_config = true; | |
3728 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), | |
3729 | "Path '%s' not absolute.", i.path); | |
3730 | } | |
3731 | ||
3732 | path_simplify(i.path); | |
3733 | ||
3f93da98 | 3734 | switch (i.type) { |
468d726b | 3735 | |
777b87e7 | 3736 | case CREATE_DIRECTORY: |
d7b8eec7 | 3737 | case CREATE_SUBVOLUME: |
5fb13eb5 LP |
3738 | case CREATE_SUBVOLUME_INHERIT_QUOTA: |
3739 | case CREATE_SUBVOLUME_NEW_QUOTA: | |
df8dee85 | 3740 | case EMPTY_DIRECTORY: |
777b87e7 MS |
3741 | case TRUNCATE_DIRECTORY: |
3742 | case CREATE_FIFO: | |
3743 | case IGNORE_PATH: | |
78a92a5a | 3744 | case IGNORE_DIRECTORY_PATH: |
777b87e7 MS |
3745 | case REMOVE_PATH: |
3746 | case RECURSIVE_REMOVE_PATH: | |
e73a03e0 | 3747 | case ADJUST_MODE: |
777b87e7 MS |
3748 | case RELABEL_PATH: |
3749 | case RECURSIVE_RELABEL_PATH: | |
c82500c6 | 3750 | if (i.argument) |
ad36bb9f ZJS |
3751 | log_syntax(NULL, LOG_WARNING, fname, line, 0, |
3752 | "%c lines don't take argument fields, ignoring.", (char) i.type); | |
c82500c6 LP |
3753 | break; |
3754 | ||
3755 | case CREATE_FILE: | |
3756 | case TRUNCATE_FILE: | |
777b87e7 | 3757 | break; |
468d726b LP |
3758 | |
3759 | case CREATE_SYMLINK: | |
708daf42 LP |
3760 | if (unbase64) { |
3761 | *invalid_config = true; | |
ad36bb9f ZJS |
3762 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3763 | "base64 decoding not supported for symlink targets."); | |
708daf42 | 3764 | } |
468d726b LP |
3765 | break; |
3766 | ||
31ed59c5 | 3767 | case WRITE_FILE: |
3f93da98 | 3768 | if (!i.argument) { |
d9daae55 | 3769 | *invalid_config = true; |
ad36bb9f ZJS |
3770 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3771 | "Write file requires argument."); | |
31ed59c5 LP |
3772 | } |
3773 | break; | |
3774 | ||
849958d1 | 3775 | case COPY_FILES: |
708daf42 LP |
3776 | if (unbase64) { |
3777 | *invalid_config = true; | |
ad36bb9f ZJS |
3778 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3779 | "base64 decoding not supported for copy sources."); | |
708daf42 | 3780 | } |
849958d1 LP |
3781 | break; |
3782 | ||
468d726b | 3783 | case CREATE_CHAR_DEVICE: |
3a47c40d | 3784 | case CREATE_BLOCK_DEVICE: |
708daf42 LP |
3785 | if (unbase64) { |
3786 | *invalid_config = true; | |
ad36bb9f ZJS |
3787 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3788 | "base64 decoding not supported for device node creation."); | |
708daf42 LP |
3789 | } |
3790 | ||
3f93da98 | 3791 | if (!i.argument) { |
d9daae55 | 3792 | *invalid_config = true; |
ad36bb9f ZJS |
3793 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3794 | "Device file requires argument."); | |
468d726b LP |
3795 | } |
3796 | ||
7176f06c | 3797 | r = parse_devnum(i.argument, &i.major_minor); |
3a47c40d | 3798 | if (r < 0) { |
d9daae55 | 3799 | *invalid_config = true; |
ad36bb9f ZJS |
3800 | return log_syntax(NULL, LOG_ERR, fname, line, r, |
3801 | "Can't parse device file major/minor '%s'.", i.argument); | |
468d726b LP |
3802 | } |
3803 | ||
468d726b | 3804 | break; |
468d726b | 3805 | |
ebf4e801 | 3806 | case SET_XATTR: |
b705ab6a | 3807 | case RECURSIVE_SET_XATTR: |
708daf42 LP |
3808 | if (unbase64) { |
3809 | *invalid_config = true; | |
ad36bb9f ZJS |
3810 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3811 | "base64 decoding not supported for extended attributes."); | |
708daf42 | 3812 | } |
3f93da98 | 3813 | if (!i.argument) { |
d9daae55 | 3814 | *invalid_config = true; |
d02933fd LP |
3815 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3816 | "Set extended attribute requires argument."); | |
ebf4e801 | 3817 | } |
bd550f78 | 3818 | r = parse_xattrs_from_arg(&i); |
ebf4e801 MW |
3819 | if (r < 0) |
3820 | return r; | |
3821 | break; | |
3822 | ||
f8eeeaf9 | 3823 | case SET_ACL: |
b705ab6a | 3824 | case RECURSIVE_SET_ACL: |
708daf42 LP |
3825 | if (unbase64) { |
3826 | *invalid_config = true; | |
ad36bb9f ZJS |
3827 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3828 | "base64 decoding not supported for ACLs."); | |
708daf42 | 3829 | } |
f8eeeaf9 | 3830 | if (!i.argument) { |
d9daae55 | 3831 | *invalid_config = true; |
d02933fd LP |
3832 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3833 | "Set ACLs requires argument."); | |
f8eeeaf9 | 3834 | } |
bd550f78 | 3835 | r = parse_acls_from_arg(&i); |
f8eeeaf9 ZJS |
3836 | if (r < 0) |
3837 | return r; | |
3838 | break; | |
3839 | ||
88ec4dfa LP |
3840 | case SET_ATTRIBUTE: |
3841 | case RECURSIVE_SET_ATTRIBUTE: | |
708daf42 LP |
3842 | if (unbase64) { |
3843 | *invalid_config = true; | |
ad36bb9f ZJS |
3844 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3845 | "base64 decoding not supported for file attributes."); | |
708daf42 | 3846 | } |
22c3a6ca | 3847 | if (!i.argument) { |
d9daae55 | 3848 | *invalid_config = true; |
d02933fd LP |
3849 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3850 | "Set file attribute requires argument."); | |
22c3a6ca | 3851 | } |
bd550f78 | 3852 | r = parse_attribute_from_arg(&i); |
751223fe | 3853 | if (IN_SET(r, -EINVAL, -EBADSLT)) |
d9daae55 | 3854 | *invalid_config = true; |
22c3a6ca GB |
3855 | if (r < 0) |
3856 | return r; | |
3857 | break; | |
3858 | ||
777b87e7 | 3859 | default: |
d9daae55 | 3860 | *invalid_config = true; |
d02933fd LP |
3861 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3862 | "Unknown command type '%c'.", (char) i.type); | |
3b63d2d3 | 3863 | } |
468d726b | 3864 | |
3f93da98 | 3865 | if (!should_include_path(i.path)) |
7f2c1f4d | 3866 | return 0; |
5008d581 | 3867 | |
e52f6f63 LP |
3868 | if (!unbase64) { |
3869 | /* Do specifier expansion except if base64 mode is enabled */ | |
708daf42 | 3870 | r = specifier_expansion_from_arg(specifier_table, &i); |
6db98098 | 3871 | if (ERRNO_IS_NOINFO(r)) |
708daf42 LP |
3872 | return log_unresolvable_specifier(fname, line); |
3873 | if (r < 0) { | |
3874 | if (IN_SET(r, -EINVAL, -EBADSLT)) | |
3875 | *invalid_config = true; | |
ad36bb9f ZJS |
3876 | return log_syntax(NULL, LOG_ERR, fname, line, r, |
3877 | "Failed to substitute specifiers in argument: %m"); | |
708daf42 | 3878 | } |
751223fe | 3879 | } |
4cef1923 | 3880 | |
1ed8887e | 3881 | switch (i.type) { |
05381430 DL |
3882 | case CREATE_SYMLINK: |
3883 | if (!i.argument) { | |
3884 | i.argument = path_join("/usr/share/factory", i.path); | |
3885 | if (!i.argument) | |
3886 | return log_oom(); | |
3887 | } | |
3888 | break; | |
3889 | ||
1ed8887e DL |
3890 | case COPY_FILES: |
3891 | if (!i.argument) { | |
3892 | i.argument = path_join("/usr/share/factory", i.path); | |
3893 | if (!i.argument) | |
3894 | return log_oom(); | |
3895 | } else if (!path_is_absolute(i.argument)) { | |
3896 | *invalid_config = true; | |
ad36bb9f ZJS |
3897 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
3898 | "Source path '%s' is not absolute.", i.argument); | |
1ed8887e DL |
3899 | |
3900 | } | |
3901 | ||
3902 | if (!empty_or_root(arg_root)) { | |
3903 | char *p; | |
3904 | ||
3905 | p = path_join(arg_root, i.argument); | |
3906 | if (!p) | |
3907 | return log_oom(); | |
3908 | free_and_replace(i.argument, p); | |
3909 | } | |
3910 | ||
3911 | path_simplify(i.argument); | |
3912 | ||
3913 | if (laccess(i.argument, F_OK) == -ENOENT) { | |
3914 | /* Silently skip over lines where the source file is missing. */ | |
ad36bb9f ZJS |
3915 | log_syntax(NULL, LOG_DEBUG, fname, line, 0, |
3916 | "Copy source path '%s' does not exist, skipping line.", i.argument); | |
1ed8887e DL |
3917 | return 0; |
3918 | } | |
3919 | ||
3920 | break; | |
3921 | ||
3922 | default: | |
3923 | break; | |
3924 | } | |
3925 | ||
e52f6f63 LP |
3926 | if (from_cred) { |
3927 | if (!i.argument) | |
ad36bb9f ZJS |
3928 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
3929 | "Reading from credential requested, but no credential name specified."); | |
e52f6f63 | 3930 | if (!credential_name_valid(i.argument)) |
ad36bb9f ZJS |
3931 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
3932 | "Credential name not valid: %s", i.argument); | |
e52f6f63 LP |
3933 | |
3934 | r = read_credential(i.argument, &i.binary_argument, &i.binary_argument_size); | |
3935 | if (IN_SET(r, -ENXIO, -ENOENT)) { | |
3936 | /* Silently skip over lines that have no credentials passed */ | |
9109009d | 3937 | log_syntax(NULL, LOG_DEBUG, fname, line, 0, |
6db98098 | 3938 | "Credential '%s' not specified, skipping line.", i.argument); |
e52f6f63 LP |
3939 | return 0; |
3940 | } | |
3941 | if (r < 0) | |
3942 | return log_error_errno(r, "Failed to read credential '%s': %m", i.argument); | |
3943 | } | |
3944 | ||
3945 | /* If base64 decoding is requested, do so now */ | |
3946 | if (unbase64 && item_binary_argument(&i)) { | |
3947 | _cleanup_free_ void *data = NULL; | |
3948 | size_t data_size = 0; | |
3949 | ||
bdd2036e MY |
3950 | r = unbase64mem_full(item_binary_argument(&i), item_binary_argument_size(&i), /* secure = */ false, |
3951 | &data, &data_size); | |
e52f6f63 LP |
3952 | if (r < 0) |
3953 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to base64 decode specified argument '%s': %m", i.argument); | |
3954 | ||
3955 | free_and_replace(i.binary_argument, data); | |
3956 | i.binary_argument_size = data_size; | |
3957 | } | |
3958 | ||
7dc6477d | 3959 | if (!empty_or_root(arg_root)) { |
cde684a2 LP |
3960 | char *p; |
3961 | ||
c6134d3e | 3962 | p = path_join(arg_root, i.path); |
cf9a4abd MM |
3963 | if (!p) |
3964 | return log_oom(); | |
81fa4479 | 3965 | free_and_replace(i.path, p); |
cf9a4abd MM |
3966 | } |
3967 | ||
e7b88b7b | 3968 | if (!empty_or_dash(user)) { |
cc43328c LP |
3969 | const char *u; |
3970 | ||
3971 | u = startswith(user, ":"); | |
3972 | if (u) | |
3973 | i.uid_only_create = true; | |
3974 | else | |
3975 | u = user; | |
3976 | ||
376d0495 | 3977 | r = find_uid(u, &i.uid, &c->uid_cache); |
e0ea6af3 ZJS |
3978 | if (r == -ESRCH && arg_graceful) { |
3979 | log_syntax(NULL, LOG_DEBUG, fname, line, r, | |
3980 | "%s: user '%s' not found, not adjusting ownership.", i.path, u); | |
3981 | missing_user_or_group = true; | |
3982 | } else if (r < 0) { | |
d9daae55 | 3983 | *invalid_config = true; |
cc43328c | 3984 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to resolve user '%s': %m", u); |
e0ea6af3 ZJS |
3985 | } else |
3986 | i.uid_set = true; | |
3b63d2d3 LP |
3987 | } |
3988 | ||
e7b88b7b | 3989 | if (!empty_or_dash(group)) { |
cc43328c LP |
3990 | const char *g; |
3991 | ||
3992 | g = startswith(group, ":"); | |
3993 | if (g) | |
3994 | i.gid_only_create = true; | |
3995 | else | |
3996 | g = group; | |
3997 | ||
376d0495 | 3998 | r = find_gid(g, &i.gid, &c->gid_cache); |
e0ea6af3 ZJS |
3999 | if (r == -ESRCH && arg_graceful) { |
4000 | log_syntax(NULL, LOG_DEBUG, fname, line, r, | |
4001 | "%s: group '%s' not found, not adjusting ownership.", i.path, g); | |
4002 | missing_user_or_group = true; | |
4003 | } else if (r < 0) { | |
d9daae55 | 4004 | *invalid_config = true; |
e0ea6af3 ZJS |
4005 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to resolve group '%s': %m", g); |
4006 | } else | |
4007 | i.gid_set = true; | |
3b63d2d3 LP |
4008 | } |
4009 | ||
e7b88b7b | 4010 | if (!empty_or_dash(mode)) { |
cc43328c | 4011 | const char *mm; |
3b63d2d3 LP |
4012 | unsigned m; |
4013 | ||
e5876c29 | 4014 | for (mm = mode;; mm++) |
cc43328c LP |
4015 | if (*mm == '~') |
4016 | i.mask_perms = true; | |
4017 | else if (*mm == ':') | |
4018 | i.mode_only_create = true; | |
4019 | else | |
4020 | break; | |
abef3f91 | 4021 | |
d02933fd LP |
4022 | r = parse_mode(mm, &m); |
4023 | if (r < 0) { | |
d9daae55 | 4024 | *invalid_config = true; |
d02933fd | 4025 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Invalid mode '%s'.", mode); |
3b63d2d3 LP |
4026 | } |
4027 | ||
3f93da98 ZJS |
4028 | i.mode = m; |
4029 | i.mode_set = true; | |
3b63d2d3 | 4030 | } else |
2223a025 ZJS |
4031 | i.mode = IN_SET(i.type, |
4032 | CREATE_DIRECTORY, | |
4033 | TRUNCATE_DIRECTORY, | |
4034 | CREATE_SUBVOLUME, | |
4035 | CREATE_SUBVOLUME_INHERIT_QUOTA, | |
4036 | CREATE_SUBVOLUME_NEW_QUOTA) ? 0755 : 0644; | |
3b63d2d3 | 4037 | |
e0ea6af3 ZJS |
4038 | if (missing_user_or_group && (i.mode & ~0777) != 0) { |
4039 | /* Refuse any special bits for nodes where we couldn't resolve the ownership properly. */ | |
4040 | mode_t adjusted = i.mode & 0777; | |
4041 | log_syntax(NULL, LOG_INFO, fname, line, 0, | |
4042 | "Changing mode 0%o to 0%o because of changed ownership.", i.mode, adjusted); | |
4043 | i.mode = adjusted; | |
4044 | } | |
4045 | ||
e7b88b7b | 4046 | if (!empty_or_dash(age)) { |
24f3a374 | 4047 | const char *a = age; |
7f7a50dd | 4048 | _cleanup_free_ char *seconds = NULL, *age_by = NULL; |
24f3a374 LP |
4049 | |
4050 | if (*a == '~') { | |
3f93da98 | 4051 | i.keep_first_level = true; |
24f3a374 LP |
4052 | a++; |
4053 | } | |
4054 | ||
7f7a50dd SK |
4055 | /* Format: "age-by:age"; where age-by is "[abcmABCM]+". */ |
4056 | r = split_pair(a, ":", &age_by, &seconds); | |
4057 | if (r == -ENOMEM) | |
4058 | return log_oom(); | |
4059 | if (r < 0 && r != -EINVAL) | |
4060 | return log_error_errno(r, "Failed to parse age-by for '%s': %m", age); | |
4061 | if (r >= 0) { | |
4062 | /* We found a ":", parse the "age-by" part. */ | |
4063 | r = parse_age_by_from_arg(age_by, &i); | |
4064 | if (r == -ENOMEM) | |
4065 | return log_oom(); | |
4066 | if (r < 0) { | |
4067 | *invalid_config = true; | |
4068 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Invalid age-by '%s'.", age_by); | |
4069 | } | |
4070 | ||
4071 | /* For parsing the "age" part, after the ":". */ | |
4072 | a = seconds; | |
4073 | } | |
4074 | ||
d02933fd LP |
4075 | r = parse_sec(a, &i.age); |
4076 | if (r < 0) { | |
d9daae55 | 4077 | *invalid_config = true; |
7f7a50dd | 4078 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Invalid age '%s'.", a); |
3b63d2d3 LP |
4079 | } |
4080 | ||
3f93da98 | 4081 | i.age_set = true; |
3b63d2d3 LP |
4082 | } |
4083 | ||
a5e4f3ab | 4084 | h = needs_glob(i.type) ? c->globs : c->items; |
bfe95f35 | 4085 | |
ef43a391 | 4086 | existing = ordered_hashmap_get(h, i.path); |
468d726b | 4087 | if (existing) { |
9af74e0f FB |
4088 | if (is_duplicated_item(existing, &i)) { |
4089 | log_syntax(NULL, LOG_NOTICE, fname, line, 0, | |
4090 | "Duplicate line for path \"%s\", ignoring.", i.path); | |
4091 | return 0; | |
ebf4e801 MW |
4092 | } |
4093 | } else { | |
3f93da98 | 4094 | existing = new0(ItemArray, 1); |
07982ed1 LP |
4095 | if (!existing) |
4096 | return log_oom(); | |
4097 | ||
ef43a391 | 4098 | r = ordered_hashmap_put(h, i.path, existing); |
ccd114f0 LP |
4099 | if (r < 0) { |
4100 | free(existing); | |
3f93da98 | 4101 | return log_oom(); |
ccd114f0 | 4102 | } |
bfe95f35 LP |
4103 | } |
4104 | ||
319a4f4b | 4105 | if (!GREEDY_REALLOC(existing->items, existing->n_items + 1)) |
3f93da98 | 4106 | return log_oom(); |
5008d581 | 4107 | |
088d71f8 | 4108 | existing->items[existing->n_items++] = TAKE_STRUCT(i); |
dd449aca ZJS |
4109 | |
4110 | /* Sort item array, to enforce stable ordering of application */ | |
96d10d78 | 4111 | typesafe_qsort(existing->items, existing->n_items, item_compare); |
17493fa5 | 4112 | |
7f2c1f4d | 4113 | return 0; |
5008d581 LP |
4114 | } |
4115 | ||
ceaaeb9b ZJS |
4116 | static int cat_config(char **config_dirs, char **args) { |
4117 | _cleanup_strv_free_ char **files = NULL; | |
4118 | int r; | |
4119 | ||
4120 | r = conf_files_list_with_replacement(arg_root, config_dirs, arg_replace, &files, NULL); | |
4121 | if (r < 0) | |
4122 | return r; | |
4123 | ||
1be6a5db ZJS |
4124 | pager_open(arg_pager_flags); |
4125 | ||
4126 | return cat_files(NULL, files, arg_cat_flags); | |
ceaaeb9b ZJS |
4127 | } |
4128 | ||
dd04fb32 LP |
4129 | static int exclude_default_prefixes(void) { |
4130 | int r; | |
4131 | ||
4132 | /* Provide an easy way to exclude virtual/memory file systems from what we do here. Useful in | |
4133 | * combination with --root= where we probably don't want to apply stuff to these dirs as they are | |
4134 | * likely over-mounted if the root directory is actually used, and it wouldbe less than ideal to have | |
4135 | * all kinds of files created/adjusted underneath these mount points. */ | |
4136 | ||
69f3c619 | 4137 | r = strv_extend_many( |
dd04fb32 | 4138 | &arg_exclude_prefixes, |
69f3c619 LP |
4139 | "/dev", |
4140 | "/proc", | |
4141 | "/run", | |
4142 | "/sys"); | |
dd04fb32 LP |
4143 | if (r < 0) |
4144 | return log_oom(); | |
4145 | ||
69f3c619 | 4146 | strv_uniq(arg_exclude_prefixes); |
dd04fb32 LP |
4147 | return 0; |
4148 | } | |
4149 | ||
37ec0fdd LP |
4150 | static int help(void) { |
4151 | _cleanup_free_ char *link = NULL; | |
4152 | int r; | |
4153 | ||
4154 | r = terminal_urlify_man("systemd-tmpfiles", "8", &link); | |
4155 | if (r < 0) | |
4156 | return log_oom(); | |
4157 | ||
9c8a0ca6 ZJS |
4158 | printf("%1$s COMMAND [OPTIONS...] [CONFIGURATION FILE...]\n" |
4159 | "\n%2$sCreate, delete, and clean up files and directories.%4$s\n" | |
4160 | "\n%3$sCommands:%4$s\n" | |
4161 | " --create Create files and directories\n" | |
4162 | " --clean Clean up files and directories\n" | |
4163 | " --remove Remove files and directories\n" | |
5c795114 | 4164 | " -h --help Show this help\n" |
eb9da376 | 4165 | " --version Show package version\n" |
9c8a0ca6 ZJS |
4166 | "\n%3$sOptions:%4$s\n" |
4167 | " --user Execute user configuration\n" | |
ceaaeb9b | 4168 | " --cat-config Show configuration files\n" |
1be6a5db | 4169 | " --tldr Show non-comment parts of configuration\n" |
81815651 | 4170 | " --boot Execute actions only safe at boot\n" |
9a27ef09 | 4171 | " --graceful Quietly ignore unknown users or groups\n" |
81a18380 | 4172 | " --purge Delete all files owned by the configuration files\n" |
79ca888f ZJS |
4173 | " --prefix=PATH Only apply rules with the specified prefix\n" |
4174 | " --exclude-prefix=PATH Ignore rules with the specified prefix\n" | |
dd04fb32 | 4175 | " -E Ignore rules prefixed with /dev, /proc, /run, /sys\n" |
d9daae55 | 4176 | " --root=PATH Operate on an alternate filesystem root\n" |
63d3d0a5 | 4177 | " --image=PATH Operate on disk image as filesystem root\n" |
84be0c71 | 4178 | " --image-policy=POLICY Specify disk image dissection policy\n" |
a6d8474f | 4179 | " --replace=PATH Treat arguments as replacement for PATH\n" |
9e90d4f4 | 4180 | " --dry-run Just print what would be done\n" |
dcd5c891 | 4181 | " --no-pager Do not pipe output into a pager\n" |
9c8a0ca6 | 4182 | "\nSee the %5$s for details.\n", |
bc556335 DDM |
4183 | program_invocation_short_name, |
4184 | ansi_highlight(), | |
9c8a0ca6 | 4185 | ansi_underline(), |
bc556335 DDM |
4186 | ansi_normal(), |
4187 | link); | |
37ec0fdd LP |
4188 | |
4189 | return 0; | |
3b63d2d3 LP |
4190 | } |
4191 | ||
4192 | static int parse_argv(int argc, char *argv[]) { | |
3b63d2d3 | 4193 | enum { |
eb9da376 | 4194 | ARG_VERSION = 0x100, |
ceaaeb9b | 4195 | ARG_CAT_CONFIG, |
1be6a5db | 4196 | ARG_TLDR, |
f2b5ca0e | 4197 | ARG_USER, |
3b63d2d3 LP |
4198 | ARG_CREATE, |
4199 | ARG_CLEAN, | |
fba6e687 | 4200 | ARG_REMOVE, |
81a18380 | 4201 | ARG_PURGE, |
81815651 | 4202 | ARG_BOOT, |
e0ea6af3 | 4203 | ARG_GRACEFUL, |
5c795114 DR |
4204 | ARG_PREFIX, |
4205 | ARG_EXCLUDE_PREFIX, | |
cf9a4abd | 4206 | ARG_ROOT, |
63d3d0a5 | 4207 | ARG_IMAGE, |
06e78680 | 4208 | ARG_IMAGE_POLICY, |
a6d8474f | 4209 | ARG_REPLACE, |
9e90d4f4 | 4210 | ARG_DRY_RUN, |
dcd5c891 | 4211 | ARG_NO_PAGER, |
3b63d2d3 LP |
4212 | }; |
4213 | ||
4214 | static const struct option options[] = { | |
5c795114 | 4215 | { "help", no_argument, NULL, 'h' }, |
f2b5ca0e | 4216 | { "user", no_argument, NULL, ARG_USER }, |
eb9da376 | 4217 | { "version", no_argument, NULL, ARG_VERSION }, |
ceaaeb9b | 4218 | { "cat-config", no_argument, NULL, ARG_CAT_CONFIG }, |
1be6a5db | 4219 | { "tldr", no_argument, NULL, ARG_TLDR }, |
5c795114 DR |
4220 | { "create", no_argument, NULL, ARG_CREATE }, |
4221 | { "clean", no_argument, NULL, ARG_CLEAN }, | |
4222 | { "remove", no_argument, NULL, ARG_REMOVE }, | |
81a18380 | 4223 | { "purge", no_argument, NULL, ARG_PURGE }, |
81815651 | 4224 | { "boot", no_argument, NULL, ARG_BOOT }, |
e0ea6af3 | 4225 | { "graceful", no_argument, NULL, ARG_GRACEFUL }, |
5c795114 DR |
4226 | { "prefix", required_argument, NULL, ARG_PREFIX }, |
4227 | { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX }, | |
cf9a4abd | 4228 | { "root", required_argument, NULL, ARG_ROOT }, |
63d3d0a5 | 4229 | { "image", required_argument, NULL, ARG_IMAGE }, |
06e78680 | 4230 | { "image-policy", required_argument, NULL, ARG_IMAGE_POLICY }, |
a6d8474f | 4231 | { "replace", required_argument, NULL, ARG_REPLACE }, |
9e90d4f4 | 4232 | { "dry-run", no_argument, NULL, ARG_DRY_RUN }, |
dcd5c891 | 4233 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, |
eb9da376 | 4234 | {} |
3b63d2d3 LP |
4235 | }; |
4236 | ||
0f474365 | 4237 | int c, r; |
3b63d2d3 LP |
4238 | |
4239 | assert(argc >= 0); | |
4240 | assert(argv); | |
4241 | ||
dd04fb32 | 4242 | while ((c = getopt_long(argc, argv, "hE", options, NULL)) >= 0) |
3b63d2d3 LP |
4243 | |
4244 | switch (c) { | |
4245 | ||
4246 | case 'h': | |
37ec0fdd | 4247 | return help(); |
eb9da376 LP |
4248 | |
4249 | case ARG_VERSION: | |
3f6fd1ba | 4250 | return version(); |
3b63d2d3 | 4251 | |
ceaaeb9b | 4252 | case ARG_CAT_CONFIG: |
1be6a5db ZJS |
4253 | arg_cat_flags = CAT_CONFIG_ON; |
4254 | break; | |
4255 | ||
4256 | case ARG_TLDR: | |
4257 | arg_cat_flags = CAT_TLDR; | |
ceaaeb9b ZJS |
4258 | break; |
4259 | ||
f2b5ca0e | 4260 | case ARG_USER: |
4870133b | 4261 | arg_runtime_scope = RUNTIME_SCOPE_USER; |
f2b5ca0e ZJS |
4262 | break; |
4263 | ||
3b63d2d3 | 4264 | case ARG_CREATE: |
1a967b6b | 4265 | arg_operation |= OPERATION_CREATE; |
3b63d2d3 LP |
4266 | break; |
4267 | ||
4268 | case ARG_CLEAN: | |
1a967b6b | 4269 | arg_operation |= OPERATION_CLEAN; |
3b63d2d3 LP |
4270 | break; |
4271 | ||
4272 | case ARG_REMOVE: | |
1a967b6b | 4273 | arg_operation |= OPERATION_REMOVE; |
3b63d2d3 LP |
4274 | break; |
4275 | ||
81815651 ZJS |
4276 | case ARG_BOOT: |
4277 | arg_boot = true; | |
c4708f13 ZJS |
4278 | break; |
4279 | ||
81a18380 LB |
4280 | case ARG_PURGE: |
4281 | arg_operation |= OPERATION_PURGE; | |
4282 | break; | |
4283 | ||
e0ea6af3 ZJS |
4284 | case ARG_GRACEFUL: |
4285 | arg_graceful = true; | |
4286 | break; | |
4287 | ||
fba6e687 | 4288 | case ARG_PREFIX: |
7f13af72 | 4289 | if (strv_extend(&arg_include_prefixes, optarg) < 0) |
a2aced4a | 4290 | return log_oom(); |
fba6e687 LP |
4291 | break; |
4292 | ||
5c795114 | 4293 | case ARG_EXCLUDE_PREFIX: |
7f13af72 | 4294 | if (strv_extend(&arg_exclude_prefixes, optarg) < 0) |
5c795114 DR |
4295 | return log_oom(); |
4296 | break; | |
4297 | ||
63d3d0a5 | 4298 | case ARG_ROOT: |
614b022c | 4299 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root); |
dd04fb32 LP |
4300 | if (r < 0) |
4301 | return r; | |
dd04fb32 LP |
4302 | break; |
4303 | ||
63d3d0a5 | 4304 | case ARG_IMAGE: |
3537577c ZJS |
4305 | #ifdef STANDALONE |
4306 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
4307 | "This systemd-tmpfiles version is compiled without support for --image=."); | |
4308 | #else | |
614b022c | 4309 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); |
63d3d0a5 LP |
4310 | if (r < 0) |
4311 | return r; | |
3537577c ZJS |
4312 | #endif |
4313 | /* Imply -E here since it makes little sense to create files persistently in the /run mountpoint of a disk image */ | |
63d3d0a5 LP |
4314 | _fallthrough_; |
4315 | ||
4316 | case 'E': | |
4317 | r = exclude_default_prefixes(); | |
0f474365 | 4318 | if (r < 0) |
0f03c2a4 | 4319 | return r; |
63d3d0a5 | 4320 | |
cf9a4abd MM |
4321 | break; |
4322 | ||
06e78680 YW |
4323 | case ARG_IMAGE_POLICY: |
4324 | r = parse_image_policy_argument(optarg, &arg_image_policy); | |
4325 | if (r < 0) | |
4326 | return r; | |
4327 | break; | |
4328 | ||
a6d8474f | 4329 | case ARG_REPLACE: |
37ee46f7 | 4330 | if (!path_is_absolute(optarg)) |
baaa35ad | 4331 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
37ee46f7 ZJS |
4332 | "The argument to --replace= must be an absolute path."); |
4333 | if (!endswith(optarg, ".conf")) | |
4334 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
4335 | "The argument to --replace= must have the extension '.conf'."); | |
a6d8474f ZJS |
4336 | |
4337 | arg_replace = optarg; | |
4338 | break; | |
4339 | ||
9e90d4f4 ZJS |
4340 | case ARG_DRY_RUN: |
4341 | arg_dry_run = true; | |
4342 | break; | |
4343 | ||
dcd5c891 | 4344 | case ARG_NO_PAGER: |
0221d68a | 4345 | arg_pager_flags |= PAGER_DISABLE; |
dcd5c891 LP |
4346 | break; |
4347 | ||
3b63d2d3 LP |
4348 | case '?': |
4349 | return -EINVAL; | |
4350 | ||
4351 | default: | |
04499a70 | 4352 | assert_not_reached(); |
3b63d2d3 | 4353 | } |
3b63d2d3 | 4354 | |
1be6a5db | 4355 | if (arg_operation == 0 && arg_cat_flags == CAT_CONFIG_OFF) |
baaa35ad | 4356 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
81a18380 | 4357 | "You need to specify at least one of --clean, --create, --remove, or --purge."); |
3b63d2d3 | 4358 | |
1be6a5db | 4359 | if (arg_replace && arg_cat_flags != CAT_CONFIG_OFF) |
baaa35ad | 4360 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
1be6a5db | 4361 | "Option --replace= is not supported with --cat-config/--tldr."); |
ceaaeb9b | 4362 | |
baaa35ad ZJS |
4363 | if (arg_replace && optind >= argc) |
4364 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1be6a5db | 4365 | "When --replace= is given, some configuration items must be specified."); |
a6d8474f | 4366 | |
4870133b | 4367 | if (arg_root && arg_runtime_scope == RUNTIME_SCOPE_USER) |
b63aacaa LP |
4368 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
4369 | "Combination of --user and --root= is not supported."); | |
4370 | ||
63d3d0a5 | 4371 | if (arg_image && arg_root) |
ad36bb9f ZJS |
4372 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
4373 | "Please specify either --root= or --image=, the combination of both is not supported."); | |
63d3d0a5 | 4374 | |
3b63d2d3 LP |
4375 | return 1; |
4376 | } | |
4377 | ||
1d77721f | 4378 | static int read_config_file( |
a5e4f3ab | 4379 | Context *c, |
1d77721f LP |
4380 | char **config_dirs, |
4381 | const char *fn, | |
4382 | bool ignore_enoent, | |
4383 | bool *invalid_config) { | |
4384 | ||
bec890e3 | 4385 | ItemArray *ia; |
4e68ec18 | 4386 | int r = 0; |
fba6e687 | 4387 | |
a5e4f3ab | 4388 | assert(c); |
fba6e687 LP |
4389 | assert(fn); |
4390 | ||
f6a1346e ZJS |
4391 | r = conf_file_read(arg_root, (const char**) config_dirs, fn, |
4392 | parse_line, c, ignore_enoent, invalid_config); | |
4393 | if (r <= 0) | |
4394 | return r; | |
fba6e687 | 4395 | |
78a92a5a | 4396 | /* we have to determine age parameter for each entry of type X */ |
a5e4f3ab | 4397 | ORDERED_HASHMAP_FOREACH(ia, c->globs) |
e5876c29 | 4398 | FOREACH_ARRAY(i, ia->items, ia->n_items) { |
bec890e3 | 4399 | ItemArray *ja; |
e5876c29 | 4400 | Item *candidate_item = NULL; |
78a92a5a | 4401 | |
bec890e3 | 4402 | if (i->type != IGNORE_DIRECTORY_PATH) |
78a92a5a MS |
4403 | continue; |
4404 | ||
a5e4f3ab | 4405 | ORDERED_HASHMAP_FOREACH(ja, c->items) |
e5876c29 | 4406 | FOREACH_ARRAY(j, ja->items, ja->n_items) { |
875e7b25 ZJS |
4407 | if (!IN_SET(j->type, CREATE_DIRECTORY, |
4408 | TRUNCATE_DIRECTORY, | |
4409 | CREATE_SUBVOLUME, | |
4410 | CREATE_SUBVOLUME_INHERIT_QUOTA, | |
4411 | CREATE_SUBVOLUME_NEW_QUOTA)) | |
bec890e3 | 4412 | continue; |
78a92a5a | 4413 | |
bec890e3 MM |
4414 | if (path_equal(j->path, i->path)) { |
4415 | candidate_item = j; | |
4416 | break; | |
4417 | } | |
4418 | ||
875e7b25 ZJS |
4419 | if (candidate_item |
4420 | ? (path_startswith(j->path, candidate_item->path) && fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0) | |
4421 | : path_startswith(i->path, j->path) != NULL) | |
bec890e3 MM |
4422 | candidate_item = j; |
4423 | } | |
4424 | ||
4425 | if (candidate_item && candidate_item->age_set) { | |
4426 | i->age = candidate_item->age; | |
4427 | i->age_set = true; | |
4428 | } | |
78a92a5a | 4429 | } |
78a92a5a | 4430 | |
fba6e687 LP |
4431 | return r; |
4432 | } | |
4433 | ||
a5e4f3ab LP |
4434 | static int parse_arguments( |
4435 | Context *c, | |
4436 | char **config_dirs, | |
4437 | char **args, | |
4438 | bool *invalid_config) { | |
a6d8474f ZJS |
4439 | int r; |
4440 | ||
a5e4f3ab LP |
4441 | assert(c); |
4442 | ||
a6d8474f | 4443 | STRV_FOREACH(arg, args) { |
a5e4f3ab | 4444 | r = read_config_file(c, config_dirs, *arg, false, invalid_config); |
a6d8474f ZJS |
4445 | if (r < 0) |
4446 | return r; | |
4447 | } | |
4448 | ||
4449 | return 0; | |
4450 | } | |
4451 | ||
a5e4f3ab LP |
4452 | static int read_config_files( |
4453 | Context *c, | |
4454 | char **config_dirs, | |
4455 | char **args, | |
4456 | bool *invalid_config) { | |
4457 | ||
a6d8474f ZJS |
4458 | _cleanup_strv_free_ char **files = NULL; |
4459 | _cleanup_free_ char *p = NULL; | |
a6d8474f ZJS |
4460 | int r; |
4461 | ||
a5e4f3ab LP |
4462 | assert(c); |
4463 | ||
ceaaeb9b | 4464 | r = conf_files_list_with_replacement(arg_root, config_dirs, arg_replace, &files, &p); |
a6d8474f | 4465 | if (r < 0) |
ceaaeb9b | 4466 | return r; |
a6d8474f ZJS |
4467 | |
4468 | STRV_FOREACH(f, files) | |
4469 | if (p && path_equal(*f, p)) { | |
28e5e1e9 | 4470 | log_debug("Parsing arguments at position \"%s\"%s", *f, special_glyph(SPECIAL_GLYPH_ELLIPSIS)); |
a6d8474f | 4471 | |
a5e4f3ab | 4472 | r = parse_arguments(c, config_dirs, args, invalid_config); |
a6d8474f ZJS |
4473 | if (r < 0) |
4474 | return r; | |
4475 | } else | |
4476 | /* Just warn, ignore result otherwise. | |
4477 | * read_config_file() has some debug output, so no need to print anything. */ | |
a5e4f3ab | 4478 | (void) read_config_file(c, config_dirs, *f, true, invalid_config); |
a6d8474f ZJS |
4479 | |
4480 | return 0; | |
4481 | } | |
4482 | ||
a5e4f3ab | 4483 | static int read_credential_lines(Context *c, bool *invalid_config) { |
1d77721f LP |
4484 | _cleanup_free_ char *j = NULL; |
4485 | const char *d; | |
4486 | int r; | |
4487 | ||
a5e4f3ab LP |
4488 | assert(c); |
4489 | ||
1d77721f LP |
4490 | r = get_credentials_dir(&d); |
4491 | if (r == -ENXIO) | |
4492 | return 0; | |
4493 | if (r < 0) | |
4494 | return log_error_errno(r, "Failed to get credentials directory: %m"); | |
4495 | ||
4496 | j = path_join(d, "tmpfiles.extra"); | |
4497 | if (!j) | |
4498 | return log_oom(); | |
4499 | ||
a5e4f3ab | 4500 | (void) read_config_file(c, /* config_dirs= */ NULL, j, /* ignore_enoent= */ true, invalid_config); |
1d77721f LP |
4501 | return 0; |
4502 | } | |
4503 | ||
a5e4f3ab | 4504 | static int link_parent(Context *c, ItemArray *a) { |
811a1587 LP |
4505 | const char *path; |
4506 | char *prefix; | |
4507 | int r; | |
4508 | ||
a5e4f3ab | 4509 | assert(c); |
811a1587 LP |
4510 | assert(a); |
4511 | ||
ad36bb9f ZJS |
4512 | /* Finds the closest "parent" item array for the specified item array. Then registers the specified |
4513 | * item array as child of it, and fills the parent in, linking them both ways. This allows us to | |
4514 | * later create parents before their children, and clean up/remove children before their parents. | |
4515 | */ | |
811a1587 LP |
4516 | |
4517 | if (a->n_items <= 0) | |
4518 | return 0; | |
4519 | ||
4520 | path = a->items[0].path; | |
6e9417f5 | 4521 | prefix = newa(char, strlen(path) + 1); |
811a1587 LP |
4522 | PATH_FOREACH_PREFIX(prefix, path) { |
4523 | ItemArray *j; | |
4524 | ||
a5e4f3ab | 4525 | j = ordered_hashmap_get(c->items, prefix); |
bd0ce244 | 4526 | if (!j) |
a5e4f3ab | 4527 | j = ordered_hashmap_get(c->globs, prefix); |
811a1587 | 4528 | if (j) { |
de7fef4b | 4529 | r = set_ensure_put(&j->children, NULL, a); |
811a1587 LP |
4530 | if (r < 0) |
4531 | return log_oom(); | |
4532 | ||
4533 | a->parent = j; | |
4534 | return 1; | |
4535 | } | |
4536 | } | |
4537 | ||
4538 | return 0; | |
4539 | } | |
4540 | ||
87938c3b YW |
4541 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(item_array_hash_ops, char, string_hash_func, string_compare_func, |
4542 | ItemArray, item_array_free); | |
4543 | ||
4544 | static int run(int argc, char *argv[]) { | |
3537577c | 4545 | #ifndef STANDALONE |
63d3d0a5 | 4546 | _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; |
a4b3e942 | 4547 | _cleanup_(umount_and_freep) char *mounted_dir = NULL; |
3537577c | 4548 | #endif |
f2b5ca0e | 4549 | _cleanup_strv_free_ char **config_dirs = NULL; |
a5e4f3ab | 4550 | _cleanup_(context_done) Context c = {}; |
d9daae55 | 4551 | bool invalid_config = false; |
64adb379 | 4552 | ItemArray *a; |
44ac4f88 | 4553 | enum { |
81a18380 | 4554 | PHASE_PURGE, |
44ac4f88 LP |
4555 | PHASE_REMOVE_AND_CLEAN, |
4556 | PHASE_CREATE, | |
4557 | _PHASE_MAX | |
4558 | } phase; | |
87938c3b | 4559 | int r, k; |
3b63d2d3 | 4560 | |
fdcad0c2 LP |
4561 | r = parse_argv(argc, argv); |
4562 | if (r <= 0) | |
87938c3b | 4563 | return r; |
5008d581 | 4564 | |
d2acb93d | 4565 | log_setup(); |
5008d581 | 4566 | |
01131684 LP |
4567 | /* We require /proc/ for a lot of our operations, i.e. for adjusting access modes, for anything |
4568 | * SELinux related, for recursive operation, for xattr, acl and chattr handling, for btrfs stuff and | |
4569 | * a lot more. It's probably the majority of invocations where /proc/ is required. Since people | |
4570 | * apparently invoke it without anyway and are surprised about the failures, let's catch this early | |
4571 | * and output a nice and friendly warning. */ | |
4572 | if (proc_mounted() == 0) | |
4573 | return log_error_errno(SYNTHETIC_ERRNO(ENOSYS), | |
4574 | "/proc/ is not mounted, but required for successful operation of systemd-tmpfiles. " | |
4575 | "Please mount /proc/. Alternatively, consider using the --root= or --image= switches."); | |
4576 | ||
e5358401 LP |
4577 | /* Descending down file system trees might take a lot of fds */ |
4578 | (void) rlimit_nofile_bump(HIGH_RLIMIT_NOFILE); | |
4579 | ||
4870133b LP |
4580 | switch (arg_runtime_scope) { |
4581 | ||
4582 | case RUNTIME_SCOPE_USER: | |
f2b5ca0e | 4583 | r = user_config_paths(&config_dirs); |
87938c3b YW |
4584 | if (r < 0) |
4585 | return log_error_errno(r, "Failed to initialize configuration directory list: %m"); | |
4870133b LP |
4586 | break; |
4587 | ||
4588 | case RUNTIME_SCOPE_SYSTEM: | |
f2b5ca0e | 4589 | config_dirs = strv_split_nulstr(CONF_PATHS_NULSTR("tmpfiles.d")); |
87938c3b YW |
4590 | if (!config_dirs) |
4591 | return log_oom(); | |
4870133b LP |
4592 | break; |
4593 | ||
4594 | default: | |
4595 | assert_not_reached(); | |
f2b5ca0e ZJS |
4596 | } |
4597 | ||
79c91cec | 4598 | if (DEBUG_LOGGING) { |
f2b5ca0e ZJS |
4599 | _cleanup_free_ char *t = NULL; |
4600 | ||
b8e35011 LP |
4601 | STRV_FOREACH(i, config_dirs) { |
4602 | _cleanup_free_ char *j = NULL; | |
4603 | ||
4604 | j = path_join(arg_root, *i); | |
4605 | if (!j) | |
4606 | return log_oom(); | |
4607 | ||
c2bc710b | 4608 | if (!strextend(&t, "\n\t", j)) |
b8e35011 LP |
4609 | return log_oom(); |
4610 | } | |
4611 | ||
4612 | log_debug("Looking for configuration files in (higher priority first):%s", t); | |
f2b5ca0e ZJS |
4613 | } |
4614 | ||
1be6a5db | 4615 | if (arg_cat_flags != CAT_CONFIG_OFF) |
87938c3b | 4616 | return cat_config(config_dirs, argv + optind); |
ceaaeb9b ZJS |
4617 | |
4618 | umask(0022); | |
4619 | ||
a452c807 | 4620 | r = mac_init(); |
a9ba0e32 CG |
4621 | if (r < 0) |
4622 | return r; | |
ceaaeb9b | 4623 | |
3537577c | 4624 | #ifndef STANDALONE |
63d3d0a5 LP |
4625 | if (arg_image) { |
4626 | assert(!arg_root); | |
4627 | ||
4628 | r = mount_image_privately_interactively( | |
4629 | arg_image, | |
84be0c71 | 4630 | arg_image_policy, |
4b5de5dd LP |
4631 | DISSECT_IMAGE_GENERIC_ROOT | |
4632 | DISSECT_IMAGE_REQUIRE_ROOT | | |
4633 | DISSECT_IMAGE_VALIDATE_OS | | |
4634 | DISSECT_IMAGE_RELAX_VAR_CHECK | | |
c65f854a LP |
4635 | DISSECT_IMAGE_FSCK | |
4636 | DISSECT_IMAGE_GROWFS, | |
a4b3e942 | 4637 | &mounted_dir, |
a133d2c3 | 4638 | /* ret_dir_fd= */ NULL, |
e330f97a | 4639 | &loop_device); |
63d3d0a5 LP |
4640 | if (r < 0) |
4641 | return r; | |
4642 | ||
a4b3e942 | 4643 | arg_root = strdup(mounted_dir); |
63d3d0a5 LP |
4644 | if (!arg_root) |
4645 | return log_oom(); | |
4646 | } | |
3537577c ZJS |
4647 | #else |
4648 | assert(!arg_image); | |
4649 | #endif | |
63d3d0a5 | 4650 | |
a5e4f3ab LP |
4651 | c.items = ordered_hashmap_new(&item_array_hash_ops); |
4652 | c.globs = ordered_hashmap_new(&item_array_hash_ops); | |
4653 | if (!c.items || !c.globs) | |
87938c3b | 4654 | return log_oom(); |
ceaaeb9b | 4655 | |
a6d8474f ZJS |
4656 | /* If command line arguments are specified along with --replace, read all |
4657 | * configuration files and insert the positional arguments at the specified | |
4658 | * place. Otherwise, if command line arguments are specified, execute just | |
4659 | * them, and finally, without --replace= or any positional arguments, just | |
4660 | * read configuration and execute it. | |
4661 | */ | |
4662 | if (arg_replace || optind >= argc) | |
a5e4f3ab | 4663 | r = read_config_files(&c, config_dirs, argv + optind, &invalid_config); |
a6d8474f | 4664 | else |
a5e4f3ab | 4665 | r = parse_arguments(&c, config_dirs, argv + optind, &invalid_config); |
a6d8474f | 4666 | if (r < 0) |
87938c3b | 4667 | return r; |
5008d581 | 4668 | |
a5e4f3ab | 4669 | r = read_credential_lines(&c, &invalid_config); |
1d77721f LP |
4670 | if (r < 0) |
4671 | return r; | |
4672 | ||
811a1587 | 4673 | /* Let's now link up all child/parent relationships */ |
a5e4f3ab LP |
4674 | ORDERED_HASHMAP_FOREACH(a, c.items) { |
4675 | r = link_parent(&c, a); | |
811a1587 | 4676 | if (r < 0) |
87938c3b | 4677 | return r; |
1db50423 | 4678 | } |
a5e4f3ab LP |
4679 | ORDERED_HASHMAP_FOREACH(a, c.globs) { |
4680 | r = link_parent(&c, a); | |
811a1587 | 4681 | if (r < 0) |
87938c3b | 4682 | return r; |
811a1587 LP |
4683 | } |
4684 | ||
ad36bb9f ZJS |
4685 | /* If multiple operations are requested, let's first run the remove/clean operations, and only then |
4686 | * the create operations. i.e. that we first clean out the platform we then build on. */ | |
44ac4f88 | 4687 | for (phase = 0; phase < _PHASE_MAX; phase++) { |
64adb379 | 4688 | OperationMask op; |
b8bb3e8f | 4689 | |
81a18380 LB |
4690 | if (phase == PHASE_PURGE) |
4691 | op = arg_operation & OPERATION_PURGE; | |
4692 | else if (phase == PHASE_REMOVE_AND_CLEAN) | |
64adb379 | 4693 | op = arg_operation & (OPERATION_REMOVE|OPERATION_CLEAN); |
44ac4f88 | 4694 | else if (phase == PHASE_CREATE) |
64adb379 LP |
4695 | op = arg_operation & OPERATION_CREATE; |
4696 | else | |
04499a70 | 4697 | assert_not_reached(); |
64adb379 LP |
4698 | |
4699 | if (op == 0) /* Nothing requested in this phase */ | |
4700 | continue; | |
4701 | ||
4702 | /* The non-globbing ones usually create things, hence we apply them first */ | |
a5e4f3ab LP |
4703 | ORDERED_HASHMAP_FOREACH(a, c.items) { |
4704 | k = process_item_array(&c, a, op); | |
87938c3b YW |
4705 | if (k < 0 && r >= 0) |
4706 | r = k; | |
64adb379 LP |
4707 | } |
4708 | ||
4709 | /* The globbing ones usually alter things, hence we apply them second. */ | |
a5e4f3ab LP |
4710 | ORDERED_HASHMAP_FOREACH(a, c.globs) { |
4711 | k = process_item_array(&c, a, op); | |
87938c3b YW |
4712 | if (k < 0 && r >= 0) |
4713 | r = k; | |
64adb379 | 4714 | } |
1db50423 | 4715 | } |
3b63d2d3 | 4716 | |
95d2155a | 4717 | if (ERRNO_IS_RESOURCE(r)) |
87938c3b YW |
4718 | return r; |
4719 | if (invalid_config) | |
d9daae55 | 4720 | return EX_DATAERR; |
87938c3b | 4721 | if (r < 0) |
bb9947be | 4722 | return EX_CANTCREAT; |
87938c3b | 4723 | return 0; |
5008d581 | 4724 | } |
87938c3b YW |
4725 | |
4726 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |