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5008d581 LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
3b63d2d3 | 6 | Copyright 2010 Lennart Poettering, Kay Sievers |
5008d581 LP |
7 | |
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
5008d581 LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
5008d581 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
5008d581 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
22 | #include <unistd.h> | |
23 | #include <fcntl.h> | |
24 | #include <errno.h> | |
25 | #include <string.h> | |
26 | #include <sys/stat.h> | |
27 | #include <limits.h> | |
28 | #include <dirent.h> | |
29 | #include <grp.h> | |
30 | #include <pwd.h> | |
3b63d2d3 LP |
31 | #include <stdio.h> |
32 | #include <stdlib.h> | |
33 | #include <stddef.h> | |
34 | #include <getopt.h> | |
35 | #include <stdbool.h> | |
36 | #include <time.h> | |
37 | #include <sys/types.h> | |
38 | #include <sys/param.h> | |
b8bb3e8f LP |
39 | #include <glob.h> |
40 | #include <fnmatch.h> | |
cb7ed9df | 41 | #include <sys/capability.h> |
5008d581 LP |
42 | |
43 | #include "log.h" | |
44 | #include "util.h" | |
54693d9b | 45 | #include "macro.h" |
d39efe74 | 46 | #include "missing.h" |
49e942b2 | 47 | #include "mkdir.h" |
9eb977db | 48 | #include "path-util.h" |
5008d581 LP |
49 | #include "strv.h" |
50 | #include "label.h" | |
3b63d2d3 | 51 | #include "set.h" |
2c21044f | 52 | #include "conf-files.h" |
cb7ed9df | 53 | #include "capability.h" |
1731e34a | 54 | #include "specifier.h" |
eb9da376 | 55 | #include "build.h" |
849958d1 | 56 | #include "copy.h" |
5008d581 | 57 | |
01000479 | 58 | /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates |
5008d581 | 59 | * them in the file system. This is intended to be used to create |
db019b8d KS |
60 | * properly owned directories beneath /tmp, /var/tmp, /run, which are |
61 | * volatile and hence need to be recreated on bootup. */ | |
5008d581 | 62 | |
66ccd038 | 63 | typedef enum ItemType { |
b8bb3e8f | 64 | /* These ones take file names */ |
3b63d2d3 LP |
65 | CREATE_FILE = 'f', |
66 | TRUNCATE_FILE = 'F', | |
67 | CREATE_DIRECTORY = 'd', | |
68 | TRUNCATE_DIRECTORY = 'D', | |
ee17ee7c | 69 | CREATE_FIFO = 'p', |
468d726b LP |
70 | CREATE_SYMLINK = 'L', |
71 | CREATE_CHAR_DEVICE = 'c', | |
72 | CREATE_BLOCK_DEVICE = 'b', | |
849958d1 | 73 | COPY_FILES = 'C', |
b8bb3e8f LP |
74 | |
75 | /* These ones take globs */ | |
cde684a2 | 76 | WRITE_FILE = 'w', |
3b63d2d3 | 77 | IGNORE_PATH = 'x', |
78a92a5a | 78 | IGNORE_DIRECTORY_PATH = 'X', |
3b63d2d3 | 79 | REMOVE_PATH = 'r', |
a8d88783 | 80 | RECURSIVE_REMOVE_PATH = 'R', |
e73a03e0 | 81 | ADJUST_MODE = 'm', /* legacy, 'z' is identical to this */ |
777b87e7 | 82 | RELABEL_PATH = 'z', |
e73a03e0 | 83 | RECURSIVE_RELABEL_PATH = 'Z', |
66ccd038 | 84 | } ItemType; |
3b63d2d3 LP |
85 | |
86 | typedef struct Item { | |
66ccd038 | 87 | ItemType type; |
3b63d2d3 LP |
88 | |
89 | char *path; | |
468d726b | 90 | char *argument; |
5008d581 LP |
91 | uid_t uid; |
92 | gid_t gid; | |
3b63d2d3 LP |
93 | mode_t mode; |
94 | usec_t age; | |
95 | ||
468d726b LP |
96 | dev_t major_minor; |
97 | ||
3b63d2d3 LP |
98 | bool uid_set:1; |
99 | bool gid_set:1; | |
100 | bool mode_set:1; | |
101 | bool age_set:1; | |
abef3f91 | 102 | bool mask_perms:1; |
24f3a374 LP |
103 | |
104 | bool keep_first_level:1; | |
1910cd0e | 105 | |
2e78fa79 LP |
106 | bool force:1; |
107 | ||
1910cd0e | 108 | bool done:1; |
3b63d2d3 LP |
109 | } Item; |
110 | ||
3b63d2d3 LP |
111 | static bool arg_create = false; |
112 | static bool arg_clean = false; | |
113 | static bool arg_remove = false; | |
81815651 | 114 | static bool arg_boot = false; |
3b63d2d3 | 115 | |
7bc040fa LP |
116 | static char **arg_include_prefixes = NULL; |
117 | static char **arg_exclude_prefixes = NULL; | |
cf9a4abd | 118 | static char *arg_root = NULL; |
fba6e687 | 119 | |
fabe5c0e LP |
120 | static const char conf_file_dirs[] = |
121 | "/etc/tmpfiles.d\0" | |
122 | "/run/tmpfiles.d\0" | |
123 | "/usr/local/lib/tmpfiles.d\0" | |
124 | "/usr/lib/tmpfiles.d\0" | |
3f2afb29 | 125 | #ifdef HAVE_SPLIT_USR |
fabe5c0e | 126 | "/lib/tmpfiles.d\0" |
3f2afb29 | 127 | #endif |
fabe5c0e | 128 | ; |
9125670f | 129 | |
3b63d2d3 LP |
130 | #define MAX_DEPTH 256 |
131 | ||
7bc040fa LP |
132 | static Hashmap *items = NULL, *globs = NULL; |
133 | static Set *unix_sockets = NULL; | |
134 | ||
66ccd038 | 135 | static bool needs_glob(ItemType t) { |
cde684a2 LP |
136 | return IN_SET(t, |
137 | WRITE_FILE, | |
138 | IGNORE_PATH, | |
139 | IGNORE_DIRECTORY_PATH, | |
140 | REMOVE_PATH, | |
141 | RECURSIVE_REMOVE_PATH, | |
e73a03e0 | 142 | ADJUST_MODE, |
cde684a2 LP |
143 | RELABEL_PATH, |
144 | RECURSIVE_RELABEL_PATH); | |
b8bb3e8f LP |
145 | } |
146 | ||
147 | static struct Item* find_glob(Hashmap *h, const char *match) { | |
148 | Item *j; | |
149 | Iterator i; | |
150 | ||
151 | HASHMAP_FOREACH(j, h, i) | |
152 | if (fnmatch(j->path, match, FNM_PATHNAME|FNM_PERIOD) == 0) | |
153 | return j; | |
154 | ||
155 | return NULL; | |
156 | } | |
157 | ||
17b90525 | 158 | static void load_unix_sockets(void) { |
7fd1b19b | 159 | _cleanup_fclose_ FILE *f = NULL; |
17b90525 LP |
160 | char line[LINE_MAX]; |
161 | ||
162 | if (unix_sockets) | |
163 | return; | |
164 | ||
165 | /* We maintain a cache of the sockets we found in | |
166 | * /proc/net/unix to speed things up a little. */ | |
167 | ||
fdcad0c2 LP |
168 | unix_sockets = set_new(string_hash_func, string_compare_func); |
169 | if (!unix_sockets) | |
17b90525 LP |
170 | return; |
171 | ||
fdcad0c2 LP |
172 | f = fopen("/proc/net/unix", "re"); |
173 | if (!f) | |
17b90525 LP |
174 | return; |
175 | ||
fdcad0c2 LP |
176 | /* Skip header */ |
177 | if (!fgets(line, sizeof(line), f)) | |
17b90525 LP |
178 | goto fail; |
179 | ||
180 | for (;;) { | |
181 | char *p, *s; | |
182 | int k; | |
183 | ||
fdcad0c2 | 184 | if (!fgets(line, sizeof(line), f)) |
17b90525 LP |
185 | break; |
186 | ||
187 | truncate_nl(line); | |
188 | ||
fdcad0c2 LP |
189 | p = strchr(line, ':'); |
190 | if (!p) | |
191 | continue; | |
192 | ||
193 | if (strlen(p) < 37) | |
17b90525 LP |
194 | continue; |
195 | ||
fdcad0c2 | 196 | p += 37; |
17b90525 | 197 | p += strspn(p, WHITESPACE); |
fdcad0c2 | 198 | p += strcspn(p, WHITESPACE); /* skip one more word */ |
17b90525 LP |
199 | p += strspn(p, WHITESPACE); |
200 | ||
201 | if (*p != '/') | |
202 | continue; | |
203 | ||
fdcad0c2 LP |
204 | s = strdup(p); |
205 | if (!s) | |
17b90525 LP |
206 | goto fail; |
207 | ||
4ff21d85 LP |
208 | path_kill_slashes(s); |
209 | ||
ef42202a ZJS |
210 | k = set_consume(unix_sockets, s); |
211 | if (k < 0 && k != -EEXIST) | |
212 | goto fail; | |
17b90525 LP |
213 | } |
214 | ||
215 | return; | |
216 | ||
217 | fail: | |
218 | set_free_free(unix_sockets); | |
219 | unix_sockets = NULL; | |
17b90525 LP |
220 | } |
221 | ||
222 | static bool unix_socket_alive(const char *fn) { | |
223 | assert(fn); | |
224 | ||
225 | load_unix_sockets(); | |
226 | ||
227 | if (unix_sockets) | |
228 | return !!set_get(unix_sockets, (char*) fn); | |
229 | ||
230 | /* We don't know, so assume yes */ | |
231 | return true; | |
232 | } | |
233 | ||
99d680ac | 234 | static int dir_is_mount_point(DIR *d, const char *subdir) { |
cde684a2 LP |
235 | |
236 | union file_handle_union h = { | |
237 | .handle.handle_bytes = MAX_HANDLE_SZ | |
238 | }; | |
239 | ||
99d680ac KS |
240 | int mount_id_parent, mount_id; |
241 | int r_p, r; | |
242 | ||
370c860f | 243 | r_p = name_to_handle_at(dirfd(d), ".", &h.handle, &mount_id_parent, 0); |
99d680ac KS |
244 | if (r_p < 0) |
245 | r_p = -errno; | |
246 | ||
370c860f DR |
247 | h.handle.handle_bytes = MAX_HANDLE_SZ; |
248 | r = name_to_handle_at(dirfd(d), subdir, &h.handle, &mount_id, 0); | |
99d680ac KS |
249 | if (r < 0) |
250 | r = -errno; | |
251 | ||
252 | /* got no handle; make no assumptions, return error */ | |
253 | if (r_p < 0 && r < 0) | |
254 | return r_p; | |
255 | ||
256 | /* got both handles; if they differ, it is a mount point */ | |
257 | if (r_p >= 0 && r >= 0) | |
258 | return mount_id_parent != mount_id; | |
259 | ||
260 | /* got only one handle; assume different mount points if one | |
261 | * of both queries was not supported by the filesystem */ | |
262 | if (r_p == -ENOSYS || r_p == -ENOTSUP || r == -ENOSYS || r == -ENOTSUP) | |
263 | return true; | |
264 | ||
265 | /* return error */ | |
266 | if (r_p < 0) | |
267 | return r_p; | |
268 | return r; | |
269 | } | |
270 | ||
3b63d2d3 | 271 | static int dir_cleanup( |
78a92a5a | 272 | Item *i, |
3b63d2d3 LP |
273 | const char *p, |
274 | DIR *d, | |
275 | const struct stat *ds, | |
276 | usec_t cutoff, | |
277 | dev_t rootdev, | |
278 | bool mountpoint, | |
24f3a374 | 279 | int maxdepth, |
265ffa1e LP |
280 | bool keep_this_level) { |
281 | ||
3b63d2d3 LP |
282 | struct dirent *dent; |
283 | struct timespec times[2]; | |
284 | bool deleted = false; | |
3b63d2d3 LP |
285 | int r = 0; |
286 | ||
287 | while ((dent = readdir(d))) { | |
288 | struct stat s; | |
289 | usec_t age; | |
7fd1b19b | 290 | _cleanup_free_ char *sub_path = NULL; |
3b63d2d3 LP |
291 | |
292 | if (streq(dent->d_name, ".") || | |
293 | streq(dent->d_name, "..")) | |
294 | continue; | |
5008d581 | 295 | |
3b63d2d3 | 296 | if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) { |
ca2f4176 KS |
297 | if (errno == ENOENT) |
298 | continue; | |
5008d581 | 299 | |
ca2f4176 KS |
300 | /* FUSE, NFS mounts, SELinux might return EACCES */ |
301 | if (errno == EACCES) | |
302 | log_debug("stat(%s/%s) failed: %m", p, dent->d_name); | |
303 | else | |
3b63d2d3 | 304 | log_error("stat(%s/%s) failed: %m", p, dent->d_name); |
ca2f4176 | 305 | r = -errno; |
3b63d2d3 LP |
306 | continue; |
307 | } | |
308 | ||
309 | /* Stay on the same filesystem */ | |
310 | if (s.st_dev != rootdev) | |
311 | continue; | |
312 | ||
99d680ac KS |
313 | /* Try to detect bind mounts of the same filesystem instance; they |
314 | * do not differ in device major/minors. This type of query is not | |
315 | * supported on all kernels or filesystem types though. */ | |
316 | if (S_ISDIR(s.st_mode) && dir_is_mount_point(d, dent->d_name) > 0) | |
317 | continue; | |
318 | ||
3b63d2d3 LP |
319 | /* Do not delete read-only files owned by root */ |
320 | if (s.st_uid == 0 && !(s.st_mode & S_IWUSR)) | |
321 | continue; | |
322 | ||
cde684a2 LP |
323 | sub_path = strjoin(p, "/", dent->d_name, NULL); |
324 | if (!sub_path) { | |
0d0f0c50 | 325 | r = log_oom(); |
3b63d2d3 LP |
326 | goto finish; |
327 | } | |
328 | ||
329 | /* Is there an item configured for this path? */ | |
330 | if (hashmap_get(items, sub_path)) | |
331 | continue; | |
332 | ||
b8bb3e8f LP |
333 | if (find_glob(globs, sub_path)) |
334 | continue; | |
335 | ||
3b63d2d3 LP |
336 | if (S_ISDIR(s.st_mode)) { |
337 | ||
338 | if (mountpoint && | |
339 | streq(dent->d_name, "lost+found") && | |
340 | s.st_uid == 0) | |
341 | continue; | |
342 | ||
343 | if (maxdepth <= 0) | |
344 | log_warning("Reached max depth on %s.", sub_path); | |
345 | else { | |
7fd1b19b | 346 | _cleanup_closedir_ DIR *sub_dir; |
3b63d2d3 LP |
347 | int q; |
348 | ||
e5f3d1ba | 349 | sub_dir = xopendirat(dirfd(d), dent->d_name, O_NOFOLLOW|O_NOATIME); |
cde684a2 | 350 | if (!sub_dir) { |
3b63d2d3 LP |
351 | if (errno != ENOENT) { |
352 | log_error("opendir(%s/%s) failed: %m", p, dent->d_name); | |
353 | r = -errno; | |
354 | } | |
355 | ||
356 | continue; | |
357 | } | |
358 | ||
78a92a5a | 359 | q = dir_cleanup(i, sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1, false); |
3b63d2d3 LP |
360 | if (q < 0) |
361 | r = q; | |
362 | } | |
363 | ||
24f3a374 LP |
364 | /* Note: if you are wondering why we don't |
365 | * support the sticky bit for excluding | |
366 | * directories from cleaning like we do it for | |
367 | * other file system objects: well, the sticky | |
368 | * bit already has a meaning for directories, | |
369 | * so we don't want to overload that. */ | |
370 | ||
371 | if (keep_this_level) | |
372 | continue; | |
373 | ||
3b63d2d3 LP |
374 | /* Ignore ctime, we change it when deleting */ |
375 | age = MAX(timespec_load(&s.st_mtim), | |
376 | timespec_load(&s.st_atim)); | |
377 | if (age >= cutoff) | |
378 | continue; | |
379 | ||
a6187d4c | 380 | if (i->type != IGNORE_DIRECTORY_PATH || !streq(dent->d_name, p)) { |
9f6445e3 | 381 | log_debug("rmdir '%s'", sub_path); |
3b63d2d3 | 382 | |
78a92a5a MS |
383 | if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) { |
384 | if (errno != ENOENT && errno != ENOTEMPTY) { | |
385 | log_error("rmdir(%s): %m", sub_path); | |
386 | r = -errno; | |
387 | } | |
3b63d2d3 LP |
388 | } |
389 | } | |
390 | ||
391 | } else { | |
9c73736d LP |
392 | /* Skip files for which the sticky bit is |
393 | * set. These are semantics we define, and are | |
394 | * unknown elsewhere. See XDG_RUNTIME_DIR | |
395 | * specification for details. */ | |
396 | if (s.st_mode & S_ISVTX) | |
397 | continue; | |
398 | ||
17b90525 | 399 | if (mountpoint && S_ISREG(s.st_mode)) { |
3b63d2d3 LP |
400 | if (streq(dent->d_name, ".journal") && |
401 | s.st_uid == 0) | |
402 | continue; | |
403 | ||
404 | if (streq(dent->d_name, "aquota.user") || | |
405 | streq(dent->d_name, "aquota.group")) | |
406 | continue; | |
407 | } | |
408 | ||
17b90525 LP |
409 | /* Ignore sockets that are listed in /proc/net/unix */ |
410 | if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path)) | |
411 | continue; | |
412 | ||
78ab08eb LP |
413 | /* Ignore device nodes */ |
414 | if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) | |
415 | continue; | |
416 | ||
24f3a374 LP |
417 | /* Keep files on this level around if this is |
418 | * requested */ | |
419 | if (keep_this_level) | |
420 | continue; | |
421 | ||
3b63d2d3 LP |
422 | age = MAX3(timespec_load(&s.st_mtim), |
423 | timespec_load(&s.st_atim), | |
424 | timespec_load(&s.st_ctim)); | |
425 | ||
426 | if (age >= cutoff) | |
427 | continue; | |
428 | ||
9f6445e3 | 429 | log_debug("unlink '%s'", sub_path); |
3b63d2d3 LP |
430 | |
431 | if (unlinkat(dirfd(d), dent->d_name, 0) < 0) { | |
432 | if (errno != ENOENT) { | |
433 | log_error("unlink(%s): %m", sub_path); | |
434 | r = -errno; | |
435 | } | |
436 | } | |
437 | ||
438 | deleted = true; | |
439 | } | |
440 | } | |
441 | ||
442 | finish: | |
443 | if (deleted) { | |
444 | /* Restore original directory timestamps */ | |
445 | times[0] = ds->st_atim; | |
446 | times[1] = ds->st_mtim; | |
447 | ||
448 | if (futimens(dirfd(d), times) < 0) | |
449 | log_error("utimensat(%s): %m", p); | |
450 | } | |
451 | ||
3b63d2d3 LP |
452 | return r; |
453 | } | |
454 | ||
9855d6c7 | 455 | static int item_set_perms(Item *i, const char *path) { |
cde684a2 LP |
456 | assert(i); |
457 | assert(path); | |
458 | ||
062e01bb | 459 | /* not using i->path directly because it may be a glob */ |
abef3f91 LP |
460 | if (i->mode_set) { |
461 | mode_t m = i->mode; | |
462 | ||
463 | if (i->mask_perms) { | |
464 | struct stat st; | |
465 | ||
466 | if (stat(path, &st) >= 0) { | |
467 | if (!(st.st_mode & 0111)) | |
468 | m &= ~0111; | |
469 | if (!(st.st_mode & 0222)) | |
470 | m &= ~0222; | |
471 | if (!(st.st_mode & 0444)) | |
472 | m &= ~0444; | |
473 | if (!S_ISDIR(st.st_mode)) | |
474 | m &= ~07000; /* remove sticky/sgid/suid bit, unless directory */ | |
475 | } | |
476 | } | |
477 | ||
478 | if (chmod(path, m) < 0) { | |
9855d6c7 LP |
479 | log_error("chmod(%s) failed: %m", path); |
480 | return -errno; | |
062e01bb | 481 | } |
abef3f91 | 482 | } |
062e01bb MS |
483 | |
484 | if (i->uid_set || i->gid_set) | |
485 | if (chown(path, | |
486 | i->uid_set ? i->uid : (uid_t) -1, | |
487 | i->gid_set ? i->gid : (gid_t) -1) < 0) { | |
488 | ||
9855d6c7 LP |
489 | log_error("chown(%s) failed: %m", path); |
490 | return -errno; | |
062e01bb MS |
491 | } |
492 | ||
9855d6c7 | 493 | return label_fix(path, false, false); |
062e01bb MS |
494 | } |
495 | ||
d4e9eb91 | 496 | static int write_one_file(Item *i, const char *path) { |
43ad6e31 LP |
497 | _cleanup_close_ int fd = -1; |
498 | int flags, r = 0; | |
d4e9eb91 | 499 | struct stat st; |
d4e9eb91 | 500 | |
874f1947 LP |
501 | assert(i); |
502 | assert(path); | |
503 | ||
43ad6e31 LP |
504 | flags = i->type == CREATE_FILE ? O_CREAT|O_APPEND|O_NOFOLLOW : |
505 | i->type == TRUNCATE_FILE ? O_CREAT|O_TRUNC|O_NOFOLLOW : 0; | |
d4e9eb91 | 506 | |
43ad6e31 | 507 | RUN_WITH_UMASK(0000) { |
5c0d398d | 508 | label_context_set(path, S_IFREG); |
43ad6e31 | 509 | fd = open(path, flags|O_NDELAY|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode); |
5c0d398d | 510 | label_context_clear(); |
5c0d398d | 511 | } |
d4e9eb91 DR |
512 | |
513 | if (fd < 0) { | |
514 | if (i->type == WRITE_FILE && errno == ENOENT) | |
515 | return 0; | |
516 | ||
517 | log_error("Failed to create file %s: %m", path); | |
518 | return -errno; | |
519 | } | |
520 | ||
521 | if (i->argument) { | |
cde684a2 | 522 | _cleanup_free_ char *unescaped; |
d4e9eb91 DR |
523 | ssize_t n; |
524 | size_t l; | |
d4e9eb91 | 525 | |
54693d9b | 526 | unescaped = cunescape(i->argument); |
43ad6e31 | 527 | if (!unescaped) |
54693d9b | 528 | return log_oom(); |
d4e9eb91 | 529 | |
54693d9b DR |
530 | l = strlen(unescaped); |
531 | n = write(fd, unescaped, l); | |
d4e9eb91 | 532 | |
d4e9eb91 DR |
533 | if (n < 0 || (size_t) n < l) { |
534 | log_error("Failed to write file %s: %s", path, n < 0 ? strerror(-n) : "Short write"); | |
d4e9eb91 DR |
535 | return n < 0 ? n : -EIO; |
536 | } | |
537 | } | |
538 | ||
43ad6e31 | 539 | fd = safe_close(fd); |
3612fbc1 | 540 | |
d4e9eb91 DR |
541 | if (stat(path, &st) < 0) { |
542 | log_error("stat(%s) failed: %m", path); | |
543 | return -errno; | |
544 | } | |
545 | ||
546 | if (!S_ISREG(st.st_mode)) { | |
547 | log_error("%s is not a file.", path); | |
548 | return -EEXIST; | |
549 | } | |
550 | ||
551 | r = item_set_perms(i, path); | |
552 | if (r < 0) | |
553 | return r; | |
554 | ||
555 | return 0; | |
556 | } | |
557 | ||
e73a03e0 | 558 | static int item_set_perms_children(Item *i, const char *path) { |
7fd1b19b | 559 | _cleanup_closedir_ DIR *d; |
e73a03e0 LP |
560 | int r = 0; |
561 | ||
562 | assert(i); | |
563 | assert(path); | |
a8d88783 MS |
564 | |
565 | /* This returns the first error we run into, but nevertheless | |
566 | * tries to go on */ | |
567 | ||
568 | d = opendir(path); | |
569 | if (!d) | |
e73a03e0 | 570 | return errno == ENOENT || errno == ENOTDIR ? 0 : -errno; |
a8d88783 MS |
571 | |
572 | for (;;) { | |
e73a03e0 | 573 | _cleanup_free_ char *p = NULL; |
7d5e9c0f | 574 | struct dirent *de; |
e73a03e0 | 575 | int q; |
a8d88783 | 576 | |
d78096b3 FW |
577 | errno = 0; |
578 | de = readdir(d); | |
e73a03e0 LP |
579 | if (!de) { |
580 | if (errno != 0 && r == 0) | |
581 | r = -errno; | |
a8d88783 | 582 | |
a8d88783 | 583 | break; |
e73a03e0 | 584 | } |
a8d88783 MS |
585 | |
586 | if (streq(de->d_name, ".") || streq(de->d_name, "..")) | |
587 | continue; | |
588 | ||
e73a03e0 LP |
589 | p = strjoin(path, "/", de->d_name, NULL); |
590 | if (!p) | |
591 | return -ENOMEM; | |
a8d88783 | 592 | |
e73a03e0 LP |
593 | q = item_set_perms(i, p); |
594 | if (q < 0 && q != -ENOENT && r == 0) | |
595 | r = q; | |
a8d88783 | 596 | |
e73a03e0 LP |
597 | if (IN_SET(de->d_type, DT_UNKNOWN, DT_DIR)) { |
598 | q = item_set_perms_children(i, p); | |
599 | if (q < 0 && r == 0) | |
600 | r = q; | |
a8d88783 | 601 | } |
a8d88783 MS |
602 | } |
603 | ||
e73a03e0 | 604 | return r; |
a8d88783 MS |
605 | } |
606 | ||
e73a03e0 LP |
607 | static int item_set_perms_recursive(Item *i, const char *path) { |
608 | int r, q; | |
609 | ||
610 | assert(i); | |
611 | assert(path); | |
a8d88783 | 612 | |
062e01bb | 613 | r = item_set_perms(i, path); |
a8d88783 MS |
614 | if (r < 0) |
615 | return r; | |
616 | ||
e73a03e0 LP |
617 | q = item_set_perms_children(i, path); |
618 | if (q < 0 && r == 0) | |
619 | r = q; | |
a8d88783 MS |
620 | |
621 | return r; | |
622 | } | |
623 | ||
99e68c0b | 624 | static int glob_item(Item *i, int (*action)(Item *, const char *)) { |
7fd1b19b | 625 | _cleanup_globfree_ glob_t g = {}; |
e73a03e0 | 626 | int r = 0, k; |
99e68c0b MS |
627 | char **fn; |
628 | ||
99e68c0b | 629 | errno = 0; |
c84a9488 | 630 | k = glob(i->path, GLOB_NOSORT|GLOB_BRACE, NULL, &g); |
e73a03e0 LP |
631 | if (k != 0 && k != GLOB_NOMATCH) { |
632 | if (errno == 0) | |
633 | errno = EIO; | |
99e68c0b | 634 | |
e73a03e0 LP |
635 | log_error("glob(%s) failed: %m", i->path); |
636 | return -errno; | |
637 | } | |
99e68c0b | 638 | |
c84a9488 ZJS |
639 | STRV_FOREACH(fn, g.gl_pathv) { |
640 | k = action(i, *fn); | |
e73a03e0 | 641 | if (k < 0 && r == 0) |
99e68c0b | 642 | r = k; |
c84a9488 | 643 | } |
99e68c0b | 644 | |
99e68c0b MS |
645 | return r; |
646 | } | |
647 | ||
3b63d2d3 | 648 | static int create_item(Item *i) { |
3b63d2d3 | 649 | struct stat st; |
df28bc08 | 650 | int r = 0; |
5008d581 | 651 | |
3b63d2d3 | 652 | assert(i); |
5008d581 | 653 | |
3b63d2d3 LP |
654 | switch (i->type) { |
655 | ||
656 | case IGNORE_PATH: | |
78a92a5a | 657 | case IGNORE_DIRECTORY_PATH: |
3b63d2d3 LP |
658 | case REMOVE_PATH: |
659 | case RECURSIVE_REMOVE_PATH: | |
660 | return 0; | |
5008d581 | 661 | |
3b63d2d3 | 662 | case CREATE_FILE: |
31ed59c5 | 663 | case TRUNCATE_FILE: |
1845fdd9 DR |
664 | r = write_one_file(i, i->path); |
665 | if (r < 0) | |
666 | return r; | |
667 | break; | |
265ffa1e | 668 | |
849958d1 LP |
669 | case COPY_FILES: |
670 | r = copy_tree(i->argument, i->path); | |
671 | if (r < 0) { | |
19f39340 | 672 | log_error("Failed to copy files to %s: %s", i->path, strerror(-r)); |
849958d1 LP |
673 | return r; |
674 | } | |
675 | ||
676 | r = item_set_perms(i, i->path); | |
677 | if (r < 0) | |
678 | return r; | |
679 | ||
680 | break; | |
681 | ||
d4e9eb91 DR |
682 | case WRITE_FILE: |
683 | r = glob_item(i, write_one_file); | |
f05bc3f7 MS |
684 | if (r < 0) |
685 | return r; | |
5008d581 | 686 | |
3b63d2d3 LP |
687 | break; |
688 | ||
689 | case TRUNCATE_DIRECTORY: | |
690 | case CREATE_DIRECTORY: | |
5008d581 | 691 | |
5c0d398d LP |
692 | RUN_WITH_UMASK(0000) { |
693 | mkdir_parents_label(i->path, 0755); | |
6f045293 | 694 | r = mkdir_label(i->path, i->mode); |
5c0d398d | 695 | } |
5008d581 | 696 | |
6f045293 LP |
697 | if (r < 0 && r != -EEXIST) { |
698 | log_error("Failed to create directory %s: %s", i->path, strerror(-r)); | |
699 | return r; | |
5008d581 LP |
700 | } |
701 | ||
3b63d2d3 LP |
702 | if (stat(i->path, &st) < 0) { |
703 | log_error("stat(%s) failed: %m", i->path); | |
f05bc3f7 | 704 | return -errno; |
5008d581 LP |
705 | } |
706 | ||
707 | if (!S_ISDIR(st.st_mode)) { | |
3b63d2d3 | 708 | log_error("%s is not a directory.", i->path); |
f05bc3f7 | 709 | return -EEXIST; |
5008d581 LP |
710 | } |
711 | ||
062e01bb | 712 | r = item_set_perms(i, i->path); |
f05bc3f7 MS |
713 | if (r < 0) |
714 | return r; | |
3b63d2d3 LP |
715 | |
716 | break; | |
ee17ee7c LP |
717 | |
718 | case CREATE_FIFO: | |
719 | ||
5c0d398d | 720 | RUN_WITH_UMASK(0000) { |
1554afae | 721 | label_context_set(i->path, S_IFIFO); |
5c0d398d | 722 | r = mkfifo(i->path, i->mode); |
1554afae | 723 | label_context_clear(); |
5c0d398d | 724 | } |
ee17ee7c | 725 | |
1554afae LP |
726 | if (r < 0) { |
727 | if (errno != EEXIST) { | |
728 | log_error("Failed to create fifo %s: %m", i->path); | |
729 | return -errno; | |
730 | } | |
ee17ee7c | 731 | |
1554afae LP |
732 | if (stat(i->path, &st) < 0) { |
733 | log_error("stat(%s) failed: %m", i->path); | |
734 | return -errno; | |
735 | } | |
ee17ee7c | 736 | |
1554afae LP |
737 | if (!S_ISFIFO(st.st_mode)) { |
738 | ||
739 | if (i->force) { | |
740 | ||
741 | RUN_WITH_UMASK(0000) { | |
742 | label_context_set(i->path, S_IFIFO); | |
743 | r = mkfifo_atomic(i->path, i->mode); | |
744 | label_context_clear(); | |
745 | } | |
746 | ||
747 | if (r < 0) { | |
748 | log_error("Failed to create fifo %s: %s", i->path, strerror(-r)); | |
749 | return r; | |
750 | } | |
751 | } else { | |
752 | log_debug("%s is not a fifo.", i->path); | |
753 | return 0; | |
754 | } | |
755 | } | |
ee17ee7c LP |
756 | } |
757 | ||
062e01bb | 758 | r = item_set_perms(i, i->path); |
f05bc3f7 MS |
759 | if (r < 0) |
760 | return r; | |
ee17ee7c LP |
761 | |
762 | break; | |
a8d88783 | 763 | |
2e78fa79 | 764 | case CREATE_SYMLINK: |
468d726b | 765 | |
e9a5ef7c | 766 | label_context_set(i->path, S_IFLNK); |
468d726b | 767 | r = symlink(i->argument, i->path); |
e9a5ef7c | 768 | label_context_clear(); |
e9a5ef7c | 769 | |
468d726b | 770 | if (r < 0) { |
2e78fa79 | 771 | _cleanup_free_ char *x = NULL; |
468d726b | 772 | |
2e78fa79 LP |
773 | if (errno != EEXIST) { |
774 | log_error("symlink(%s, %s) failed: %m", i->argument, i->path); | |
775 | return -errno; | |
776 | } | |
777 | ||
778 | r = readlink_malloc(i->path, &x); | |
779 | if (r < 0 || !streq(i->argument, x)) { | |
780 | ||
781 | if (i->force) { | |
782 | label_context_set(i->path, S_IFLNK); | |
783 | r = symlink_atomic(i->argument, i->path); | |
784 | label_context_clear(); | |
785 | ||
786 | if (r < 0) { | |
1554afae LP |
787 | log_error("symlink(%s, %s) failed: %s", i->argument, i->path, strerror(-r)); |
788 | return r; | |
2e78fa79 | 789 | } |
1554afae | 790 | } else { |
2e78fa79 | 791 | log_debug("%s is not a symlink or does not point to the correct path.", i->path); |
1554afae LP |
792 | return 0; |
793 | } | |
2e78fa79 | 794 | } |
468d726b LP |
795 | } |
796 | ||
468d726b | 797 | break; |
468d726b LP |
798 | |
799 | case CREATE_BLOCK_DEVICE: | |
800 | case CREATE_CHAR_DEVICE: { | |
cb7ed9df LP |
801 | mode_t file_type; |
802 | ||
803 | if (have_effective_cap(CAP_MKNOD) == 0) { | |
804 | /* In a container we lack CAP_MKNOD. We | |
ab06eef8 | 805 | shouldn't attempt to create the device node in |
cb7ed9df LP |
806 | that case to avoid noise, and we don't support |
807 | virtualized devices in containers anyway. */ | |
808 | ||
809 | log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path); | |
810 | return 0; | |
811 | } | |
812 | ||
1554afae | 813 | file_type = i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR; |
468d726b | 814 | |
5c0d398d LP |
815 | RUN_WITH_UMASK(0000) { |
816 | label_context_set(i->path, file_type); | |
817 | r = mknod(i->path, i->mode | file_type, i->major_minor); | |
5c0d398d | 818 | label_context_clear(); |
5c0d398d | 819 | } |
468d726b | 820 | |
6555ad8e KS |
821 | if (r < 0) { |
822 | if (errno == EPERM) { | |
823 | log_debug("We lack permissions, possibly because of cgroup configuration; " | |
824 | "skipping creation of device node %s.", i->path); | |
825 | return 0; | |
826 | } | |
827 | ||
828 | if (errno != EEXIST) { | |
829 | log_error("Failed to create device node %s: %m", i->path); | |
830 | return -errno; | |
831 | } | |
468d726b | 832 | |
1554afae LP |
833 | if (stat(i->path, &st) < 0) { |
834 | log_error("stat(%s) failed: %m", i->path); | |
835 | return -errno; | |
836 | } | |
468d726b | 837 | |
1554afae LP |
838 | if ((st.st_mode & S_IFMT) != file_type) { |
839 | ||
840 | if (i->force) { | |
841 | ||
842 | RUN_WITH_UMASK(0000) { | |
843 | label_context_set(i->path, file_type); | |
844 | r = mknod_atomic(i->path, i->mode | file_type, i->major_minor); | |
845 | label_context_clear(); | |
846 | } | |
847 | ||
848 | if (r < 0) { | |
849 | log_error("Failed to create device node %s: %s", i->path, strerror(-r)); | |
850 | return r; | |
851 | } | |
852 | } else { | |
853 | log_debug("%s is not a device node.", i->path); | |
854 | return 0; | |
855 | } | |
856 | } | |
468d726b LP |
857 | } |
858 | ||
859 | r = item_set_perms(i, i->path); | |
860 | if (r < 0) | |
861 | return r; | |
862 | ||
863 | break; | |
864 | } | |
865 | ||
e73a03e0 | 866 | case ADJUST_MODE: |
777b87e7 MS |
867 | case RELABEL_PATH: |
868 | ||
869 | r = glob_item(i, item_set_perms); | |
870 | if (r < 0) | |
96ca8194 | 871 | return r; |
777b87e7 MS |
872 | break; |
873 | ||
a8d88783 MS |
874 | case RECURSIVE_RELABEL_PATH: |
875 | ||
e73a03e0 | 876 | r = glob_item(i, item_set_perms_recursive); |
a8d88783 MS |
877 | if (r < 0) |
878 | return r; | |
e73a03e0 LP |
879 | |
880 | break; | |
3b63d2d3 LP |
881 | } |
882 | ||
3b63d2d3 LP |
883 | log_debug("%s created successfully.", i->path); |
884 | ||
f05bc3f7 | 885 | return 0; |
3b63d2d3 LP |
886 | } |
887 | ||
a0896123 | 888 | static int remove_item_instance(Item *i, const char *instance) { |
3b63d2d3 LP |
889 | int r; |
890 | ||
891 | assert(i); | |
892 | ||
893 | switch (i->type) { | |
894 | ||
895 | case CREATE_FILE: | |
896 | case TRUNCATE_FILE: | |
897 | case CREATE_DIRECTORY: | |
ee17ee7c | 898 | case CREATE_FIFO: |
468d726b LP |
899 | case CREATE_SYMLINK: |
900 | case CREATE_BLOCK_DEVICE: | |
901 | case CREATE_CHAR_DEVICE: | |
3b63d2d3 | 902 | case IGNORE_PATH: |
78a92a5a | 903 | case IGNORE_DIRECTORY_PATH: |
e73a03e0 | 904 | case ADJUST_MODE: |
777b87e7 | 905 | case RELABEL_PATH: |
a8d88783 | 906 | case RECURSIVE_RELABEL_PATH: |
31ed59c5 | 907 | case WRITE_FILE: |
849958d1 | 908 | case COPY_FILES: |
3b63d2d3 LP |
909 | break; |
910 | ||
911 | case REMOVE_PATH: | |
b8bb3e8f LP |
912 | if (remove(instance) < 0 && errno != ENOENT) { |
913 | log_error("remove(%s): %m", instance); | |
3b63d2d3 | 914 | return -errno; |
5008d581 | 915 | } |
3b63d2d3 LP |
916 | |
917 | break; | |
918 | ||
919 | case TRUNCATE_DIRECTORY: | |
920 | case RECURSIVE_REMOVE_PATH: | |
d139b24a LP |
921 | /* FIXME: we probably should use dir_cleanup() here |
922 | * instead of rm_rf() so that 'x' is honoured. */ | |
f56d5db9 | 923 | r = rm_rf_dangerous(instance, false, i->type == RECURSIVE_REMOVE_PATH, false); |
468d726b | 924 | if (r < 0 && r != -ENOENT) { |
b8bb3e8f | 925 | log_error("rm_rf(%s): %s", instance, strerror(-r)); |
3b63d2d3 LP |
926 | return r; |
927 | } | |
928 | ||
929 | break; | |
930 | } | |
931 | ||
932 | return 0; | |
933 | } | |
934 | ||
a0896123 | 935 | static int remove_item(Item *i) { |
99e68c0b MS |
936 | int r = 0; |
937 | ||
b8bb3e8f LP |
938 | assert(i); |
939 | ||
940 | switch (i->type) { | |
941 | ||
942 | case CREATE_FILE: | |
943 | case TRUNCATE_FILE: | |
944 | case CREATE_DIRECTORY: | |
ee17ee7c | 945 | case CREATE_FIFO: |
468d726b LP |
946 | case CREATE_SYMLINK: |
947 | case CREATE_CHAR_DEVICE: | |
948 | case CREATE_BLOCK_DEVICE: | |
b8bb3e8f | 949 | case IGNORE_PATH: |
78a92a5a | 950 | case IGNORE_DIRECTORY_PATH: |
e73a03e0 | 951 | case ADJUST_MODE: |
777b87e7 | 952 | case RELABEL_PATH: |
a8d88783 | 953 | case RECURSIVE_RELABEL_PATH: |
31ed59c5 | 954 | case WRITE_FILE: |
849958d1 | 955 | case COPY_FILES: |
b8bb3e8f LP |
956 | break; |
957 | ||
958 | case REMOVE_PATH: | |
959 | case TRUNCATE_DIRECTORY: | |
99e68c0b MS |
960 | case RECURSIVE_REMOVE_PATH: |
961 | r = glob_item(i, remove_item_instance); | |
962 | break; | |
b8bb3e8f LP |
963 | } |
964 | ||
99e68c0b | 965 | return r; |
b8bb3e8f LP |
966 | } |
967 | ||
78a92a5a | 968 | static int clean_item_instance(Item *i, const char* instance) { |
7fd1b19b | 969 | _cleanup_closedir_ DIR *d = NULL; |
78a92a5a MS |
970 | struct stat s, ps; |
971 | bool mountpoint; | |
972 | int r; | |
973 | usec_t cutoff, n; | |
974 | ||
975 | assert(i); | |
976 | ||
977 | if (!i->age_set) | |
978 | return 0; | |
979 | ||
980 | n = now(CLOCK_REALTIME); | |
981 | if (n < i->age) | |
982 | return 0; | |
983 | ||
984 | cutoff = n - i->age; | |
985 | ||
986 | d = opendir(instance); | |
987 | if (!d) { | |
988 | if (errno == ENOENT || errno == ENOTDIR) | |
989 | return 0; | |
990 | ||
991 | log_error("Failed to open directory %s: %m", i->path); | |
992 | return -errno; | |
993 | } | |
994 | ||
995 | if (fstat(dirfd(d), &s) < 0) { | |
996 | log_error("stat(%s) failed: %m", i->path); | |
19fbec19 | 997 | return -errno; |
78a92a5a MS |
998 | } |
999 | ||
1000 | if (!S_ISDIR(s.st_mode)) { | |
1001 | log_error("%s is not a directory.", i->path); | |
19fbec19 | 1002 | return -ENOTDIR; |
78a92a5a MS |
1003 | } |
1004 | ||
1005 | if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) { | |
1006 | log_error("stat(%s/..) failed: %m", i->path); | |
19fbec19 | 1007 | return -errno; |
78a92a5a MS |
1008 | } |
1009 | ||
1010 | mountpoint = s.st_dev != ps.st_dev || | |
1011 | (s.st_dev == ps.st_dev && s.st_ino == ps.st_ino); | |
1012 | ||
19fbec19 ZJS |
1013 | r = dir_cleanup(i, instance, d, &s, cutoff, s.st_dev, mountpoint, |
1014 | MAX_DEPTH, i->keep_first_level); | |
78a92a5a MS |
1015 | return r; |
1016 | } | |
1017 | ||
1018 | static int clean_item(Item *i) { | |
1019 | int r = 0; | |
1020 | ||
1021 | assert(i); | |
1022 | ||
1023 | switch (i->type) { | |
1024 | case CREATE_DIRECTORY: | |
1025 | case TRUNCATE_DIRECTORY: | |
1026 | case IGNORE_PATH: | |
849958d1 | 1027 | case COPY_FILES: |
78a92a5a MS |
1028 | clean_item_instance(i, i->path); |
1029 | break; | |
1030 | case IGNORE_DIRECTORY_PATH: | |
1031 | r = glob_item(i, clean_item_instance); | |
1032 | break; | |
1033 | default: | |
1034 | break; | |
1035 | } | |
1036 | ||
1037 | return r; | |
1038 | } | |
1039 | ||
3b63d2d3 LP |
1040 | static int process_item(Item *i) { |
1041 | int r, q, p; | |
1910cd0e | 1042 | char prefix[PATH_MAX]; |
3b63d2d3 LP |
1043 | |
1044 | assert(i); | |
1045 | ||
1910cd0e LP |
1046 | if (i->done) |
1047 | return 0; | |
1048 | ||
1049 | i->done = true; | |
1050 | ||
1051 | PATH_FOREACH_PREFIX(prefix, i->path) { | |
1052 | Item *j; | |
1053 | ||
1054 | j = hashmap_get(items, prefix); | |
1055 | if (j) | |
1056 | process_item(j); | |
1057 | } | |
1058 | ||
3b63d2d3 | 1059 | r = arg_create ? create_item(i) : 0; |
a0896123 | 1060 | q = arg_remove ? remove_item(i) : 0; |
3b63d2d3 LP |
1061 | p = arg_clean ? clean_item(i) : 0; |
1062 | ||
1063 | if (r < 0) | |
1064 | return r; | |
1065 | ||
1066 | if (q < 0) | |
1067 | return q; | |
1068 | ||
1069 | return p; | |
1070 | } | |
1071 | ||
1072 | static void item_free(Item *i) { | |
753615e8 LP |
1073 | |
1074 | if (!i) | |
1075 | return; | |
3b63d2d3 LP |
1076 | |
1077 | free(i->path); | |
468d726b | 1078 | free(i->argument); |
3b63d2d3 LP |
1079 | free(i); |
1080 | } | |
1081 | ||
14bf2c9d | 1082 | DEFINE_TRIVIAL_CLEANUP_FUNC(Item*, item_free); |
e2f2fb78 | 1083 | |
bfe95f35 LP |
1084 | static bool item_equal(Item *a, Item *b) { |
1085 | assert(a); | |
1086 | assert(b); | |
1087 | ||
1088 | if (!streq_ptr(a->path, b->path)) | |
1089 | return false; | |
1090 | ||
1091 | if (a->type != b->type) | |
1092 | return false; | |
1093 | ||
1094 | if (a->uid_set != b->uid_set || | |
1095 | (a->uid_set && a->uid != b->uid)) | |
1096 | return false; | |
1097 | ||
1098 | if (a->gid_set != b->gid_set || | |
1099 | (a->gid_set && a->gid != b->gid)) | |
1100 | return false; | |
1101 | ||
1102 | if (a->mode_set != b->mode_set || | |
1103 | (a->mode_set && a->mode != b->mode)) | |
1104 | return false; | |
1105 | ||
1106 | if (a->age_set != b->age_set || | |
1107 | (a->age_set && a->age != b->age)) | |
1108 | return false; | |
1109 | ||
31ed59c5 LP |
1110 | if ((a->type == CREATE_FILE || |
1111 | a->type == TRUNCATE_FILE || | |
1112 | a->type == WRITE_FILE || | |
849958d1 LP |
1113 | a->type == CREATE_SYMLINK || |
1114 | a->type == COPY_FILES) && | |
1733ca54 | 1115 | !streq_ptr(a->argument, b->argument)) |
468d726b LP |
1116 | return false; |
1117 | ||
1118 | if ((a->type == CREATE_CHAR_DEVICE || | |
1119 | a->type == CREATE_BLOCK_DEVICE) && | |
1120 | a->major_minor != b->major_minor) | |
1121 | return false; | |
1122 | ||
bfe95f35 LP |
1123 | return true; |
1124 | } | |
1125 | ||
a2aced4a DR |
1126 | static bool should_include_path(const char *path) { |
1127 | char **prefix; | |
1128 | ||
abef3f91 | 1129 | STRV_FOREACH(prefix, arg_exclude_prefixes) |
5c795114 DR |
1130 | if (path_startswith(path, *prefix)) |
1131 | return false; | |
a2aced4a | 1132 | |
abef3f91 | 1133 | STRV_FOREACH(prefix, arg_include_prefixes) |
a2aced4a DR |
1134 | if (path_startswith(path, *prefix)) |
1135 | return true; | |
a2aced4a | 1136 | |
5c795114 DR |
1137 | /* no matches, so we should include this path only if we |
1138 | * have no whitelist at all */ | |
7bc040fa | 1139 | return strv_length(arg_include_prefixes) == 0; |
a2aced4a DR |
1140 | } |
1141 | ||
fba6e687 | 1142 | static int parse_line(const char *fname, unsigned line, const char *buffer) { |
1731e34a LP |
1143 | |
1144 | static const Specifier specifier_table[] = { | |
1145 | { 'm', specifier_machine_id, NULL }, | |
1146 | { 'b', specifier_boot_id, NULL }, | |
1147 | { 'H', specifier_host_name, NULL }, | |
1148 | { 'v', specifier_kernel_release, NULL }, | |
1149 | {} | |
1150 | }; | |
1151 | ||
cde684a2 LP |
1152 | _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL; |
1153 | _cleanup_(item_freep) Item *i = NULL; | |
7f2c1f4d | 1154 | Item *existing; |
66ccd038 | 1155 | char type; |
bfe95f35 | 1156 | Hashmap *h; |
31ed59c5 | 1157 | int r, n = -1; |
3b63d2d3 LP |
1158 | |
1159 | assert(fname); | |
1160 | assert(line >= 1); | |
1161 | assert(buffer); | |
1162 | ||
19fbec19 | 1163 | r = sscanf(buffer, |
c4708f13 ZJS |
1164 | "%ms %ms %ms %ms %ms %ms %n", |
1165 | &action, | |
1731e34a | 1166 | &path, |
bd40a2d8 LP |
1167 | &mode, |
1168 | &user, | |
1169 | &group, | |
468d726b | 1170 | &age, |
19fbec19 ZJS |
1171 | &n); |
1172 | if (r < 2) { | |
3b63d2d3 | 1173 | log_error("[%s:%u] Syntax error.", fname, line); |
7f2c1f4d | 1174 | return -EIO; |
5008d581 LP |
1175 | } |
1176 | ||
2e78fa79 LP |
1177 | if (isempty(action)) { |
1178 | log_error("[%s:%u] Command too short '%s'.", fname, line, action); | |
c4708f13 | 1179 | return -EINVAL; |
2e78fa79 LP |
1180 | } |
1181 | ||
1182 | if (strlen(action) > 1 && !in_charset(action+1, "!+")) { | |
1183 | log_error("[%s:%u] Unknown modifiers in command '%s'", fname, line, action); | |
1184 | return -EINVAL; | |
1185 | } | |
1186 | ||
1187 | if (strchr(action+1, '!') && !arg_boot) | |
c4708f13 ZJS |
1188 | return 0; |
1189 | ||
1190 | type = action[0]; | |
1191 | ||
1731e34a LP |
1192 | i = new0(Item, 1); |
1193 | if (!i) | |
1194 | return log_oom(); | |
1195 | ||
2e78fa79 LP |
1196 | i->force = !!strchr(action+1, '+'); |
1197 | ||
1731e34a LP |
1198 | r = specifier_printf(path, specifier_table, NULL, &i->path); |
1199 | if (r < 0) { | |
1200 | log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, path); | |
1201 | return r; | |
1202 | } | |
1203 | ||
31ed59c5 LP |
1204 | if (n >= 0) { |
1205 | n += strspn(buffer+n, WHITESPACE); | |
1206 | if (buffer[n] != 0 && (buffer[n] != '-' || buffer[n+1] != 0)) { | |
1207 | i->argument = unquote(buffer+n, "\""); | |
0d0f0c50 SL |
1208 | if (!i->argument) |
1209 | return log_oom(); | |
31ed59c5 LP |
1210 | } |
1211 | } | |
1212 | ||
753615e8 | 1213 | switch (type) { |
468d726b | 1214 | |
777b87e7 MS |
1215 | case CREATE_FILE: |
1216 | case TRUNCATE_FILE: | |
1217 | case CREATE_DIRECTORY: | |
1218 | case TRUNCATE_DIRECTORY: | |
1219 | case CREATE_FIFO: | |
1220 | case IGNORE_PATH: | |
78a92a5a | 1221 | case IGNORE_DIRECTORY_PATH: |
777b87e7 MS |
1222 | case REMOVE_PATH: |
1223 | case RECURSIVE_REMOVE_PATH: | |
e73a03e0 | 1224 | case ADJUST_MODE: |
777b87e7 MS |
1225 | case RELABEL_PATH: |
1226 | case RECURSIVE_RELABEL_PATH: | |
1227 | break; | |
468d726b LP |
1228 | |
1229 | case CREATE_SYMLINK: | |
1230 | if (!i->argument) { | |
1231 | log_error("[%s:%u] Symlink file requires argument.", fname, line); | |
7f2c1f4d | 1232 | return -EBADMSG; |
468d726b | 1233 | } |
cde684a2 | 1234 | |
468d726b LP |
1235 | break; |
1236 | ||
31ed59c5 LP |
1237 | case WRITE_FILE: |
1238 | if (!i->argument) { | |
1239 | log_error("[%s:%u] Write file requires argument.", fname, line); | |
7f2c1f4d | 1240 | return -EBADMSG; |
31ed59c5 LP |
1241 | } |
1242 | break; | |
1243 | ||
849958d1 LP |
1244 | case COPY_FILES: |
1245 | if (!i->argument) { | |
1246 | log_error("[%s:%u] Copy files requires argument.", fname, line); | |
1247 | return -EBADMSG; | |
1248 | } | |
1249 | ||
1250 | if (!path_is_absolute(i->argument)) { | |
1251 | log_error("[%s:%u] Source path is not absolute.", fname, line); | |
1252 | return -EBADMSG; | |
1253 | } | |
1254 | ||
1255 | path_kill_slashes(i->argument); | |
1256 | break; | |
1257 | ||
468d726b LP |
1258 | case CREATE_CHAR_DEVICE: |
1259 | case CREATE_BLOCK_DEVICE: { | |
1260 | unsigned major, minor; | |
1261 | ||
1262 | if (!i->argument) { | |
1263 | log_error("[%s:%u] Device file requires argument.", fname, line); | |
7f2c1f4d | 1264 | return -EBADMSG; |
468d726b LP |
1265 | } |
1266 | ||
1267 | if (sscanf(i->argument, "%u:%u", &major, &minor) != 2) { | |
1268 | log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname, line, i->argument); | |
7f2c1f4d | 1269 | return -EBADMSG; |
468d726b LP |
1270 | } |
1271 | ||
1272 | i->major_minor = makedev(major, minor); | |
1273 | break; | |
1274 | } | |
1275 | ||
777b87e7 | 1276 | default: |
753615e8 | 1277 | log_error("[%s:%u] Unknown command type '%c'.", fname, line, type); |
7f2c1f4d | 1278 | return -EBADMSG; |
3b63d2d3 | 1279 | } |
468d726b | 1280 | |
a8d88783 | 1281 | i->type = type; |
3b63d2d3 LP |
1282 | |
1283 | if (!path_is_absolute(i->path)) { | |
1284 | log_error("[%s:%u] Path '%s' not absolute.", fname, line, i->path); | |
7f2c1f4d | 1285 | return -EBADMSG; |
3b63d2d3 LP |
1286 | } |
1287 | ||
1288 | path_kill_slashes(i->path); | |
1289 | ||
a2aced4a | 1290 | if (!should_include_path(i->path)) |
7f2c1f4d | 1291 | return 0; |
5008d581 | 1292 | |
cf9a4abd | 1293 | if (arg_root) { |
cde684a2 LP |
1294 | char *p; |
1295 | ||
1296 | p = strappend(arg_root, i->path); | |
cf9a4abd MM |
1297 | if (!p) |
1298 | return log_oom(); | |
1299 | ||
1300 | free(i->path); | |
1301 | i->path = p; | |
1302 | } | |
1303 | ||
3b63d2d3 | 1304 | if (user && !streq(user, "-")) { |
4b67834e LP |
1305 | const char *u = user; |
1306 | ||
d05c5031 | 1307 | r = get_user_creds(&u, &i->uid, NULL, NULL, NULL); |
4b67834e | 1308 | if (r < 0) { |
3b63d2d3 | 1309 | log_error("[%s:%u] Unknown user '%s'.", fname, line, user); |
7f2c1f4d | 1310 | return r; |
3b63d2d3 LP |
1311 | } |
1312 | ||
1313 | i->uid_set = true; | |
1314 | } | |
1315 | ||
1316 | if (group && !streq(group, "-")) { | |
4b67834e LP |
1317 | const char *g = group; |
1318 | ||
1319 | r = get_group_creds(&g, &i->gid); | |
1320 | if (r < 0) { | |
3b63d2d3 | 1321 | log_error("[%s:%u] Unknown group '%s'.", fname, line, group); |
7f2c1f4d | 1322 | return r; |
3b63d2d3 LP |
1323 | } |
1324 | ||
1325 | i->gid_set = true; | |
1326 | } | |
1327 | ||
1328 | if (mode && !streq(mode, "-")) { | |
abef3f91 | 1329 | const char *mm = mode; |
3b63d2d3 LP |
1330 | unsigned m; |
1331 | ||
abef3f91 LP |
1332 | if (*mm == '~') { |
1333 | i->mask_perms = true; | |
1334 | mm++; | |
1335 | } | |
1336 | ||
1337 | if (sscanf(mm, "%o", &m) != 1) { | |
3b63d2d3 | 1338 | log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode); |
7f2c1f4d | 1339 | return -ENOENT; |
3b63d2d3 LP |
1340 | } |
1341 | ||
1342 | i->mode = m; | |
1343 | i->mode_set = true; | |
1344 | } else | |
468d726b LP |
1345 | i->mode = |
1346 | i->type == CREATE_DIRECTORY || | |
1347 | i->type == TRUNCATE_DIRECTORY ? 0755 : 0644; | |
3b63d2d3 LP |
1348 | |
1349 | if (age && !streq(age, "-")) { | |
24f3a374 LP |
1350 | const char *a = age; |
1351 | ||
1352 | if (*a == '~') { | |
1353 | i->keep_first_level = true; | |
1354 | a++; | |
1355 | } | |
1356 | ||
7f602784 | 1357 | if (parse_sec(a, &i->age) < 0) { |
3b63d2d3 | 1358 | log_error("[%s:%u] Invalid age '%s'.", fname, line, age); |
7f2c1f4d | 1359 | return -EBADMSG; |
3b63d2d3 LP |
1360 | } |
1361 | ||
1362 | i->age_set = true; | |
1363 | } | |
1364 | ||
bfe95f35 LP |
1365 | h = needs_glob(i->type) ? globs : items; |
1366 | ||
468d726b LP |
1367 | existing = hashmap_get(h, i->path); |
1368 | if (existing) { | |
bfe95f35 LP |
1369 | |
1370 | /* Two identical items are fine */ | |
1371 | if (!item_equal(existing, i)) | |
022707d9 | 1372 | log_warning("Two or more conflicting lines for %s configured, ignoring.", i->path); |
022707d9 | 1373 | |
7f2c1f4d | 1374 | return 0; |
bfe95f35 LP |
1375 | } |
1376 | ||
468d726b LP |
1377 | r = hashmap_put(h, i->path, i); |
1378 | if (r < 0) { | |
3b63d2d3 | 1379 | log_error("Failed to insert item %s: %s", i->path, strerror(-r)); |
7f2c1f4d | 1380 | return r; |
3b63d2d3 LP |
1381 | } |
1382 | ||
7f2c1f4d | 1383 | i = NULL; /* avoid cleanup */ |
5008d581 | 1384 | |
7f2c1f4d | 1385 | return 0; |
5008d581 LP |
1386 | } |
1387 | ||
3b63d2d3 LP |
1388 | static int help(void) { |
1389 | ||
522d4a49 LP |
1390 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
1391 | "Creates, deletes and cleans up volatile and temporary files and directories.\n\n" | |
5c795114 | 1392 | " -h --help Show this help\n" |
eb9da376 | 1393 | " --version Show package version\n" |
5c795114 DR |
1394 | " --create Create marked files/directories\n" |
1395 | " --clean Clean up marked directories\n" | |
1396 | " --remove Remove marked files/directories\n" | |
81815651 | 1397 | " --boot Execute actions only safe at boot\n" |
5c795114 | 1398 | " --prefix=PATH Only apply rules that apply to paths with the specified prefix\n" |
cf9a4abd MM |
1399 | " --exclude-prefix=PATH Ignore rules that apply to paths with the specified prefix\n" |
1400 | " --root=PATH Operate on an alternate filesystem root\n", | |
3b63d2d3 LP |
1401 | program_invocation_short_name); |
1402 | ||
1403 | return 0; | |
1404 | } | |
1405 | ||
1406 | static int parse_argv(int argc, char *argv[]) { | |
1407 | ||
1408 | enum { | |
eb9da376 | 1409 | ARG_VERSION = 0x100, |
3b63d2d3 LP |
1410 | ARG_CREATE, |
1411 | ARG_CLEAN, | |
fba6e687 | 1412 | ARG_REMOVE, |
81815651 | 1413 | ARG_BOOT, |
5c795114 DR |
1414 | ARG_PREFIX, |
1415 | ARG_EXCLUDE_PREFIX, | |
cf9a4abd | 1416 | ARG_ROOT, |
3b63d2d3 LP |
1417 | }; |
1418 | ||
1419 | static const struct option options[] = { | |
5c795114 | 1420 | { "help", no_argument, NULL, 'h' }, |
eb9da376 | 1421 | { "version", no_argument, NULL, ARG_VERSION }, |
5c795114 DR |
1422 | { "create", no_argument, NULL, ARG_CREATE }, |
1423 | { "clean", no_argument, NULL, ARG_CLEAN }, | |
1424 | { "remove", no_argument, NULL, ARG_REMOVE }, | |
81815651 | 1425 | { "boot", no_argument, NULL, ARG_BOOT }, |
5c795114 DR |
1426 | { "prefix", required_argument, NULL, ARG_PREFIX }, |
1427 | { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX }, | |
cf9a4abd | 1428 | { "root", required_argument, NULL, ARG_ROOT }, |
eb9da376 | 1429 | {} |
3b63d2d3 LP |
1430 | }; |
1431 | ||
1432 | int c; | |
1433 | ||
1434 | assert(argc >= 0); | |
1435 | assert(argv); | |
1436 | ||
1437 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) { | |
1438 | ||
1439 | switch (c) { | |
1440 | ||
1441 | case 'h': | |
eb9da376 LP |
1442 | return help(); |
1443 | ||
1444 | case ARG_VERSION: | |
1445 | puts(PACKAGE_STRING); | |
1446 | puts(SYSTEMD_FEATURES); | |
3b63d2d3 LP |
1447 | return 0; |
1448 | ||
1449 | case ARG_CREATE: | |
1450 | arg_create = true; | |
1451 | break; | |
1452 | ||
1453 | case ARG_CLEAN: | |
1454 | arg_clean = true; | |
1455 | break; | |
1456 | ||
1457 | case ARG_REMOVE: | |
1458 | arg_remove = true; | |
1459 | break; | |
1460 | ||
81815651 ZJS |
1461 | case ARG_BOOT: |
1462 | arg_boot = true; | |
c4708f13 ZJS |
1463 | break; |
1464 | ||
fba6e687 | 1465 | case ARG_PREFIX: |
7bc040fa | 1466 | if (strv_push(&arg_include_prefixes, optarg) < 0) |
a2aced4a | 1467 | return log_oom(); |
fba6e687 LP |
1468 | break; |
1469 | ||
5c795114 | 1470 | case ARG_EXCLUDE_PREFIX: |
7bc040fa | 1471 | if (strv_push(&arg_exclude_prefixes, optarg) < 0) |
5c795114 DR |
1472 | return log_oom(); |
1473 | break; | |
1474 | ||
cf9a4abd | 1475 | case ARG_ROOT: |
753615e8 | 1476 | free(arg_root); |
cf9a4abd MM |
1477 | arg_root = path_make_absolute_cwd(optarg); |
1478 | if (!arg_root) | |
1479 | return log_oom(); | |
753615e8 | 1480 | |
cf9a4abd MM |
1481 | path_kill_slashes(arg_root); |
1482 | break; | |
1483 | ||
3b63d2d3 LP |
1484 | case '?': |
1485 | return -EINVAL; | |
1486 | ||
1487 | default: | |
eb9da376 | 1488 | assert_not_reached("Unhandled option"); |
3b63d2d3 LP |
1489 | } |
1490 | } | |
1491 | ||
1492 | if (!arg_clean && !arg_create && !arg_remove) { | |
35b8ca3a | 1493 | log_error("You need to specify at least one of --clean, --create or --remove."); |
3b63d2d3 LP |
1494 | return -EINVAL; |
1495 | } | |
1496 | ||
1497 | return 1; | |
1498 | } | |
1499 | ||
fba6e687 | 1500 | static int read_config_file(const char *fn, bool ignore_enoent) { |
1731e34a LP |
1501 | _cleanup_fclose_ FILE *f = NULL; |
1502 | char line[LINE_MAX]; | |
78a92a5a | 1503 | Iterator iterator; |
1731e34a | 1504 | unsigned v = 0; |
78a92a5a | 1505 | Item *i; |
1731e34a | 1506 | int r; |
fba6e687 LP |
1507 | |
1508 | assert(fn); | |
1509 | ||
cf9a4abd | 1510 | r = search_and_fopen_nulstr(fn, "re", arg_root, conf_file_dirs, &f); |
fabe5c0e LP |
1511 | if (r < 0) { |
1512 | if (ignore_enoent && r == -ENOENT) | |
fba6e687 LP |
1513 | return 0; |
1514 | ||
fabe5c0e LP |
1515 | log_error("Failed to open '%s', ignoring: %s", fn, strerror(-r)); |
1516 | return r; | |
fba6e687 LP |
1517 | } |
1518 | ||
1731e34a LP |
1519 | FOREACH_LINE(line, f, break) { |
1520 | char *l; | |
fba6e687 LP |
1521 | int k; |
1522 | ||
fba6e687 LP |
1523 | v++; |
1524 | ||
1525 | l = strstrip(line); | |
1526 | if (*l == '#' || *l == 0) | |
1527 | continue; | |
1528 | ||
1731e34a LP |
1529 | k = parse_line(fn, v, l); |
1530 | if (k < 0 && r == 0) | |
1531 | r = k; | |
fba6e687 LP |
1532 | } |
1533 | ||
78a92a5a MS |
1534 | /* we have to determine age parameter for each entry of type X */ |
1535 | HASHMAP_FOREACH(i, globs, iterator) { | |
1536 | Iterator iter; | |
1537 | Item *j, *candidate_item = NULL; | |
1538 | ||
1539 | if (i->type != IGNORE_DIRECTORY_PATH) | |
1540 | continue; | |
1541 | ||
1542 | HASHMAP_FOREACH(j, items, iter) { | |
1543 | if (j->type != CREATE_DIRECTORY && j->type != TRUNCATE_DIRECTORY) | |
1544 | continue; | |
1545 | ||
1546 | if (path_equal(j->path, i->path)) { | |
1547 | candidate_item = j; | |
1548 | break; | |
1549 | } | |
1550 | ||
1551 | if ((!candidate_item && path_startswith(i->path, j->path)) || | |
1552 | (candidate_item && path_startswith(j->path, candidate_item->path) && (fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0))) | |
1553 | candidate_item = j; | |
1554 | } | |
1555 | ||
1556 | if (candidate_item) { | |
1557 | i->age = candidate_item->age; | |
1558 | i->age_set = true; | |
1559 | } | |
1560 | } | |
1561 | ||
fba6e687 LP |
1562 | if (ferror(f)) { |
1563 | log_error("Failed to read from file %s: %m", fn); | |
1564 | if (r == 0) | |
1565 | r = -EIO; | |
1566 | } | |
1567 | ||
fba6e687 LP |
1568 | return r; |
1569 | } | |
1570 | ||
5008d581 | 1571 | int main(int argc, char *argv[]) { |
fabe5c0e | 1572 | int r, k; |
3b63d2d3 LP |
1573 | Item *i; |
1574 | Iterator iterator; | |
1575 | ||
fdcad0c2 LP |
1576 | r = parse_argv(argc, argv); |
1577 | if (r <= 0) | |
753615e8 | 1578 | goto finish; |
5008d581 | 1579 | |
eb0ca9eb | 1580 | log_set_target(LOG_TARGET_AUTO); |
5008d581 LP |
1581 | log_parse_environment(); |
1582 | log_open(); | |
1583 | ||
4c12626c LP |
1584 | umask(0022); |
1585 | ||
e9a5ef7c | 1586 | label_init(NULL); |
5008d581 | 1587 | |
b8bb3e8f LP |
1588 | items = hashmap_new(string_hash_func, string_compare_func); |
1589 | globs = hashmap_new(string_hash_func, string_compare_func); | |
1590 | ||
1591 | if (!items || !globs) { | |
fabe5c0e | 1592 | r = log_oom(); |
3b63d2d3 LP |
1593 | goto finish; |
1594 | } | |
1595 | ||
fabe5c0e | 1596 | r = 0; |
5008d581 | 1597 | |
fba6e687 LP |
1598 | if (optind < argc) { |
1599 | int j; | |
5008d581 | 1600 | |
9125670f | 1601 | for (j = optind; j < argc; j++) { |
fabe5c0e LP |
1602 | k = read_config_file(argv[j], false); |
1603 | if (k < 0 && r == 0) | |
1604 | r = k; | |
9125670f | 1605 | } |
5008d581 | 1606 | |
fba6e687 | 1607 | } else { |
fabe5c0e LP |
1608 | _cleanup_strv_free_ char **files = NULL; |
1609 | char **f; | |
5008d581 | 1610 | |
cf9a4abd | 1611 | r = conf_files_list_nulstr(&files, ".conf", arg_root, conf_file_dirs); |
44143309 | 1612 | if (r < 0) { |
44143309 KS |
1613 | log_error("Failed to enumerate tmpfiles.d files: %s", strerror(-r)); |
1614 | goto finish; | |
1615 | } | |
3b63d2d3 | 1616 | |
772f8371 | 1617 | STRV_FOREACH(f, files) { |
fabe5c0e LP |
1618 | k = read_config_file(*f, true); |
1619 | if (k < 0 && r == 0) | |
1620 | r = k; | |
5008d581 | 1621 | } |
772f8371 | 1622 | } |
5008d581 | 1623 | |
b8bb3e8f | 1624 | HASHMAP_FOREACH(i, globs, iterator) |
21bdae12 | 1625 | process_item(i); |
b8bb3e8f | 1626 | |
3b63d2d3 | 1627 | HASHMAP_FOREACH(i, items, iterator) |
21bdae12 | 1628 | process_item(i); |
3b63d2d3 | 1629 | |
5008d581 | 1630 | finish: |
3b63d2d3 LP |
1631 | while ((i = hashmap_steal_first(items))) |
1632 | item_free(i); | |
1633 | ||
17b90525 LP |
1634 | while ((i = hashmap_steal_first(globs))) |
1635 | item_free(i); | |
1636 | ||
3b63d2d3 | 1637 | hashmap_free(items); |
b8bb3e8f | 1638 | hashmap_free(globs); |
5008d581 | 1639 | |
7bc040fa LP |
1640 | free(arg_include_prefixes); |
1641 | free(arg_exclude_prefixes); | |
cf9a4abd | 1642 | free(arg_root); |
a2aced4a | 1643 | |
17b90525 LP |
1644 | set_free_free(unix_sockets); |
1645 | ||
29003cff LP |
1646 | label_finish(); |
1647 | ||
fabe5c0e | 1648 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
5008d581 | 1649 | } |