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Merge pull request #5958 from keszybz/explicit-log-errno
[thirdparty/systemd.git] / src / tmpfiles / tmpfiles.c
1 /***
2 This file is part of systemd.
3
4 Copyright 2010 Lennart Poettering, Kay Sievers
5 Copyright 2015 Zbigniew Jędrzejewski-Szmek
6
7 systemd is free software; you can redistribute it and/or modify it
8 under the terms of the GNU Lesser General Public License as published by
9 the Free Software Foundation; either version 2.1 of the License, or
10 (at your option) any later version.
11
12 systemd is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
16
17 You should have received a copy of the GNU Lesser General Public License
18 along with systemd; If not, see <http://www.gnu.org/licenses/>.
19 ***/
20
21 #include <errno.h>
22 #include <fcntl.h>
23 #include <fnmatch.h>
24 #include <getopt.h>
25 #include <glob.h>
26 #include <limits.h>
27 #include <linux/fs.h>
28 #include <stdbool.h>
29 #include <stddef.h>
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <string.h>
33 #include <sys/stat.h>
34 #include <sys/xattr.h>
35 #include <time.h>
36 #include <unistd.h>
37
38 #include "acl-util.h"
39 #include "alloc-util.h"
40 #include "btrfs-util.h"
41 #include "capability-util.h"
42 #include "chattr-util.h"
43 #include "conf-files.h"
44 #include "copy.h"
45 #include "def.h"
46 #include "dirent-util.h"
47 #include "escape.h"
48 #include "fd-util.h"
49 #include "fileio.h"
50 #include "format-util.h"
51 #include "fs-util.h"
52 #include "glob-util.h"
53 #include "io-util.h"
54 #include "label.h"
55 #include "log.h"
56 #include "macro.h"
57 #include "missing.h"
58 #include "mkdir.h"
59 #include "mount-util.h"
60 #include "parse-util.h"
61 #include "path-util.h"
62 #include "rm-rf.h"
63 #include "selinux-util.h"
64 #include "set.h"
65 #include "specifier.h"
66 #include "stat-util.h"
67 #include "stdio-util.h"
68 #include "string-table.h"
69 #include "string-util.h"
70 #include "strv.h"
71 #include "umask-util.h"
72 #include "user-util.h"
73 #include "util.h"
74
75 /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates
76 * them in the file system. This is intended to be used to create
77 * properly owned directories beneath /tmp, /var/tmp, /run, which are
78 * volatile and hence need to be recreated on bootup. */
79
80 typedef enum ItemType {
81 /* These ones take file names */
82 CREATE_FILE = 'f',
83 TRUNCATE_FILE = 'F',
84 CREATE_DIRECTORY = 'd',
85 TRUNCATE_DIRECTORY = 'D',
86 CREATE_SUBVOLUME = 'v',
87 CREATE_SUBVOLUME_INHERIT_QUOTA = 'q',
88 CREATE_SUBVOLUME_NEW_QUOTA = 'Q',
89 CREATE_FIFO = 'p',
90 CREATE_SYMLINK = 'L',
91 CREATE_CHAR_DEVICE = 'c',
92 CREATE_BLOCK_DEVICE = 'b',
93 COPY_FILES = 'C',
94
95 /* These ones take globs */
96 WRITE_FILE = 'w',
97 EMPTY_DIRECTORY = 'e',
98 SET_XATTR = 't',
99 RECURSIVE_SET_XATTR = 'T',
100 SET_ACL = 'a',
101 RECURSIVE_SET_ACL = 'A',
102 SET_ATTRIBUTE = 'h',
103 RECURSIVE_SET_ATTRIBUTE = 'H',
104 IGNORE_PATH = 'x',
105 IGNORE_DIRECTORY_PATH = 'X',
106 REMOVE_PATH = 'r',
107 RECURSIVE_REMOVE_PATH = 'R',
108 RELABEL_PATH = 'z',
109 RECURSIVE_RELABEL_PATH = 'Z',
110 ADJUST_MODE = 'm', /* legacy, 'z' is identical to this */
111 } ItemType;
112
113 typedef struct Item {
114 ItemType type;
115
116 char *path;
117 char *argument;
118 char **xattrs;
119 #ifdef HAVE_ACL
120 acl_t acl_access;
121 acl_t acl_default;
122 #endif
123 uid_t uid;
124 gid_t gid;
125 mode_t mode;
126 usec_t age;
127
128 dev_t major_minor;
129 unsigned attribute_value;
130 unsigned attribute_mask;
131
132 bool uid_set:1;
133 bool gid_set:1;
134 bool mode_set:1;
135 bool age_set:1;
136 bool mask_perms:1;
137 bool attribute_set:1;
138
139 bool keep_first_level:1;
140
141 bool force:1;
142
143 bool done:1;
144 } Item;
145
146 typedef struct ItemArray {
147 Item *items;
148 size_t count;
149 size_t size;
150 } ItemArray;
151
152 static bool arg_create = false;
153 static bool arg_clean = false;
154 static bool arg_remove = false;
155 static bool arg_boot = false;
156
157 static char **arg_include_prefixes = NULL;
158 static char **arg_exclude_prefixes = NULL;
159 static char *arg_root = NULL;
160
161 static const char conf_file_dirs[] = CONF_PATHS_NULSTR("tmpfiles.d");
162
163 #define MAX_DEPTH 256
164
165 static OrderedHashmap *items = NULL, *globs = NULL;
166 static Set *unix_sockets = NULL;
167
168 static const Specifier specifier_table[] = {
169 { 'm', specifier_machine_id, NULL },
170 { 'b', specifier_boot_id, NULL },
171 { 'H', specifier_host_name, NULL },
172 { 'v', specifier_kernel_release, NULL },
173 {}
174 };
175
176 static bool needs_glob(ItemType t) {
177 return IN_SET(t,
178 WRITE_FILE,
179 IGNORE_PATH,
180 IGNORE_DIRECTORY_PATH,
181 REMOVE_PATH,
182 RECURSIVE_REMOVE_PATH,
183 EMPTY_DIRECTORY,
184 ADJUST_MODE,
185 RELABEL_PATH,
186 RECURSIVE_RELABEL_PATH,
187 SET_XATTR,
188 RECURSIVE_SET_XATTR,
189 SET_ACL,
190 RECURSIVE_SET_ACL,
191 SET_ATTRIBUTE,
192 RECURSIVE_SET_ATTRIBUTE);
193 }
194
195 static bool takes_ownership(ItemType t) {
196 return IN_SET(t,
197 CREATE_FILE,
198 TRUNCATE_FILE,
199 CREATE_DIRECTORY,
200 EMPTY_DIRECTORY,
201 TRUNCATE_DIRECTORY,
202 CREATE_SUBVOLUME,
203 CREATE_SUBVOLUME_INHERIT_QUOTA,
204 CREATE_SUBVOLUME_NEW_QUOTA,
205 CREATE_FIFO,
206 CREATE_SYMLINK,
207 CREATE_CHAR_DEVICE,
208 CREATE_BLOCK_DEVICE,
209 COPY_FILES,
210 WRITE_FILE,
211 IGNORE_PATH,
212 IGNORE_DIRECTORY_PATH,
213 REMOVE_PATH,
214 RECURSIVE_REMOVE_PATH);
215 }
216
217 static struct Item* find_glob(OrderedHashmap *h, const char *match) {
218 ItemArray *j;
219 Iterator i;
220
221 ORDERED_HASHMAP_FOREACH(j, h, i) {
222 unsigned n;
223
224 for (n = 0; n < j->count; n++) {
225 Item *item = j->items + n;
226
227 if (fnmatch(item->path, match, FNM_PATHNAME|FNM_PERIOD) == 0)
228 return item;
229 }
230 }
231
232 return NULL;
233 }
234
235 static void load_unix_sockets(void) {
236 _cleanup_fclose_ FILE *f = NULL;
237 char line[LINE_MAX];
238
239 if (unix_sockets)
240 return;
241
242 /* We maintain a cache of the sockets we found in
243 * /proc/net/unix to speed things up a little. */
244
245 unix_sockets = set_new(&string_hash_ops);
246 if (!unix_sockets)
247 return;
248
249 f = fopen("/proc/net/unix", "re");
250 if (!f)
251 return;
252
253 /* Skip header */
254 if (!fgets(line, sizeof(line), f))
255 goto fail;
256
257 for (;;) {
258 char *p, *s;
259 int k;
260
261 if (!fgets(line, sizeof(line), f))
262 break;
263
264 truncate_nl(line);
265
266 p = strchr(line, ':');
267 if (!p)
268 continue;
269
270 if (strlen(p) < 37)
271 continue;
272
273 p += 37;
274 p += strspn(p, WHITESPACE);
275 p += strcspn(p, WHITESPACE); /* skip one more word */
276 p += strspn(p, WHITESPACE);
277
278 if (*p != '/')
279 continue;
280
281 s = strdup(p);
282 if (!s)
283 goto fail;
284
285 path_kill_slashes(s);
286
287 k = set_consume(unix_sockets, s);
288 if (k < 0 && k != -EEXIST)
289 goto fail;
290 }
291
292 return;
293
294 fail:
295 set_free_free(unix_sockets);
296 unix_sockets = NULL;
297 }
298
299 static bool unix_socket_alive(const char *fn) {
300 assert(fn);
301
302 load_unix_sockets();
303
304 if (unix_sockets)
305 return !!set_get(unix_sockets, (char*) fn);
306
307 /* We don't know, so assume yes */
308 return true;
309 }
310
311 static int dir_is_mount_point(DIR *d, const char *subdir) {
312
313 union file_handle_union h = FILE_HANDLE_INIT;
314 int mount_id_parent, mount_id;
315 int r_p, r;
316
317 r_p = name_to_handle_at(dirfd(d), ".", &h.handle, &mount_id_parent, 0);
318 if (r_p < 0)
319 r_p = -errno;
320
321 h.handle.handle_bytes = MAX_HANDLE_SZ;
322 r = name_to_handle_at(dirfd(d), subdir, &h.handle, &mount_id, 0);
323 if (r < 0)
324 r = -errno;
325
326 /* got no handle; make no assumptions, return error */
327 if (r_p < 0 && r < 0)
328 return r_p;
329
330 /* got both handles; if they differ, it is a mount point */
331 if (r_p >= 0 && r >= 0)
332 return mount_id_parent != mount_id;
333
334 /* got only one handle; assume different mount points if one
335 * of both queries was not supported by the filesystem */
336 if (r_p == -ENOSYS || r_p == -EOPNOTSUPP || r == -ENOSYS || r == -EOPNOTSUPP)
337 return true;
338
339 /* return error */
340 if (r_p < 0)
341 return r_p;
342 return r;
343 }
344
345 static DIR* xopendirat_nomod(int dirfd, const char *path) {
346 DIR *dir;
347
348 dir = xopendirat(dirfd, path, O_NOFOLLOW|O_NOATIME);
349 if (dir)
350 return dir;
351
352 log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path);
353 if (errno != EPERM)
354 return NULL;
355
356 dir = xopendirat(dirfd, path, O_NOFOLLOW);
357 if (!dir)
358 log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path);
359
360 return dir;
361 }
362
363 static DIR* opendir_nomod(const char *path) {
364 return xopendirat_nomod(AT_FDCWD, path);
365 }
366
367 static int dir_cleanup(
368 Item *i,
369 const char *p,
370 DIR *d,
371 const struct stat *ds,
372 usec_t cutoff,
373 dev_t rootdev,
374 bool mountpoint,
375 int maxdepth,
376 bool keep_this_level) {
377
378 struct dirent *dent;
379 struct timespec times[2];
380 bool deleted = false;
381 int r = 0;
382
383 FOREACH_DIRENT_ALL(dent, d, break) {
384 struct stat s;
385 usec_t age;
386 _cleanup_free_ char *sub_path = NULL;
387
388 if (dot_or_dot_dot(dent->d_name))
389 continue;
390
391 if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) {
392 if (errno == ENOENT)
393 continue;
394
395 /* FUSE, NFS mounts, SELinux might return EACCES */
396 if (errno == EACCES)
397 log_debug_errno(errno, "stat(%s/%s) failed: %m", p, dent->d_name);
398 else
399 log_error_errno(errno, "stat(%s/%s) failed: %m", p, dent->d_name);
400 r = -errno;
401 continue;
402 }
403
404 /* Stay on the same filesystem */
405 if (s.st_dev != rootdev) {
406 log_debug("Ignoring \"%s/%s\": different filesystem.", p, dent->d_name);
407 continue;
408 }
409
410 /* Try to detect bind mounts of the same filesystem instance; they
411 * do not differ in device major/minors. This type of query is not
412 * supported on all kernels or filesystem types though. */
413 if (S_ISDIR(s.st_mode) && dir_is_mount_point(d, dent->d_name) > 0) {
414 log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.",
415 p, dent->d_name);
416 continue;
417 }
418
419 /* Do not delete read-only files owned by root */
420 if (s.st_uid == 0 && !(s.st_mode & S_IWUSR)) {
421 log_debug("Ignoring \"%s/%s\": read-only and owner by root.", p, dent->d_name);
422 continue;
423 }
424
425 sub_path = strjoin(p, "/", dent->d_name);
426 if (!sub_path) {
427 r = log_oom();
428 goto finish;
429 }
430
431 /* Is there an item configured for this path? */
432 if (ordered_hashmap_get(items, sub_path)) {
433 log_debug("Ignoring \"%s\": a separate entry exists.", sub_path);
434 continue;
435 }
436
437 if (find_glob(globs, sub_path)) {
438 log_debug("Ignoring \"%s\": a separate glob exists.", sub_path);
439 continue;
440 }
441
442 if (S_ISDIR(s.st_mode)) {
443
444 if (mountpoint &&
445 streq(dent->d_name, "lost+found") &&
446 s.st_uid == 0) {
447 log_debug("Ignoring \"%s\".", sub_path);
448 continue;
449 }
450
451 if (maxdepth <= 0)
452 log_warning("Reached max depth on \"%s\".", sub_path);
453 else {
454 _cleanup_closedir_ DIR *sub_dir;
455 int q;
456
457 sub_dir = xopendirat_nomod(dirfd(d), dent->d_name);
458 if (!sub_dir) {
459 if (errno != ENOENT)
460 r = log_error_errno(errno, "opendir(%s) failed: %m", sub_path);
461
462 continue;
463 }
464
465 q = dir_cleanup(i, sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1, false);
466 if (q < 0)
467 r = q;
468 }
469
470 /* Note: if you are wondering why we don't
471 * support the sticky bit for excluding
472 * directories from cleaning like we do it for
473 * other file system objects: well, the sticky
474 * bit already has a meaning for directories,
475 * so we don't want to overload that. */
476
477 if (keep_this_level) {
478 log_debug("Keeping \"%s\".", sub_path);
479 continue;
480 }
481
482 /* Ignore ctime, we change it when deleting */
483 age = timespec_load(&s.st_mtim);
484 if (age >= cutoff) {
485 char a[FORMAT_TIMESTAMP_MAX];
486 /* Follows spelling in stat(1). */
487 log_debug("Directory \"%s\": modify time %s is too new.",
488 sub_path,
489 format_timestamp_us(a, sizeof(a), age));
490 continue;
491 }
492
493 age = timespec_load(&s.st_atim);
494 if (age >= cutoff) {
495 char a[FORMAT_TIMESTAMP_MAX];
496 log_debug("Directory \"%s\": access time %s is too new.",
497 sub_path,
498 format_timestamp_us(a, sizeof(a), age));
499 continue;
500 }
501
502 log_debug("Removing directory \"%s\".", sub_path);
503 if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0)
504 if (errno != ENOENT && errno != ENOTEMPTY) {
505 log_error_errno(errno, "rmdir(%s): %m", sub_path);
506 r = -errno;
507 }
508
509 } else {
510 /* Skip files for which the sticky bit is
511 * set. These are semantics we define, and are
512 * unknown elsewhere. See XDG_RUNTIME_DIR
513 * specification for details. */
514 if (s.st_mode & S_ISVTX) {
515 log_debug("Skipping \"%s\": sticky bit set.", sub_path);
516 continue;
517 }
518
519 if (mountpoint && S_ISREG(s.st_mode))
520 if (s.st_uid == 0 && STR_IN_SET(dent->d_name,
521 ".journal",
522 "aquota.user",
523 "aquota.group")) {
524 log_debug("Skipping \"%s\".", sub_path);
525 continue;
526 }
527
528 /* Ignore sockets that are listed in /proc/net/unix */
529 if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path)) {
530 log_debug("Skipping \"%s\": live socket.", sub_path);
531 continue;
532 }
533
534 /* Ignore device nodes */
535 if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) {
536 log_debug("Skipping \"%s\": a device.", sub_path);
537 continue;
538 }
539
540 /* Keep files on this level around if this is
541 * requested */
542 if (keep_this_level) {
543 log_debug("Keeping \"%s\".", sub_path);
544 continue;
545 }
546
547 age = timespec_load(&s.st_mtim);
548 if (age >= cutoff) {
549 char a[FORMAT_TIMESTAMP_MAX];
550 /* Follows spelling in stat(1). */
551 log_debug("File \"%s\": modify time %s is too new.",
552 sub_path,
553 format_timestamp_us(a, sizeof(a), age));
554 continue;
555 }
556
557 age = timespec_load(&s.st_atim);
558 if (age >= cutoff) {
559 char a[FORMAT_TIMESTAMP_MAX];
560 log_debug("File \"%s\": access time %s is too new.",
561 sub_path,
562 format_timestamp_us(a, sizeof(a), age));
563 continue;
564 }
565
566 age = timespec_load(&s.st_ctim);
567 if (age >= cutoff) {
568 char a[FORMAT_TIMESTAMP_MAX];
569 log_debug("File \"%s\": change time %s is too new.",
570 sub_path,
571 format_timestamp_us(a, sizeof(a), age));
572 continue;
573 }
574
575 log_debug("unlink \"%s\"", sub_path);
576
577 if (unlinkat(dirfd(d), dent->d_name, 0) < 0)
578 if (errno != ENOENT)
579 r = log_error_errno(errno, "unlink(%s): %m", sub_path);
580
581 deleted = true;
582 }
583 }
584
585 finish:
586 if (deleted) {
587 usec_t age1, age2;
588 char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX];
589
590 /* Restore original directory timestamps */
591 times[0] = ds->st_atim;
592 times[1] = ds->st_mtim;
593
594 age1 = timespec_load(&ds->st_atim);
595 age2 = timespec_load(&ds->st_mtim);
596 log_debug("Restoring access and modification time on \"%s\": %s, %s",
597 p,
598 format_timestamp_us(a, sizeof(a), age1),
599 format_timestamp_us(b, sizeof(b), age2));
600 if (futimens(dirfd(d), times) < 0)
601 log_error_errno(errno, "utimensat(%s): %m", p);
602 }
603
604 return r;
605 }
606
607 static int path_set_perms(Item *i, const char *path) {
608 _cleanup_close_ int fd = -1;
609 struct stat st;
610
611 assert(i);
612 assert(path);
613
614 /* We open the file with O_PATH here, to make the operation
615 * somewhat atomic. Also there's unfortunately no fchmodat()
616 * with AT_SYMLINK_NOFOLLOW, hence we emulate it here via
617 * O_PATH. */
618
619 fd = open(path, O_NOFOLLOW|O_CLOEXEC|O_PATH);
620 if (fd < 0)
621 return log_error_errno(errno, "Adjusting owner and mode for %s failed: %m", path);
622
623 if (fstatat(fd, "", &st, AT_EMPTY_PATH) < 0)
624 return log_error_errno(errno, "Failed to fstat() file %s: %m", path);
625
626 if (S_ISLNK(st.st_mode))
627 log_debug("Skipping mode an owner fix for symlink %s.", path);
628 else {
629 char fn[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
630 xsprintf(fn, "/proc/self/fd/%i", fd);
631
632 /* not using i->path directly because it may be a glob */
633 if (i->mode_set) {
634 mode_t m = i->mode;
635
636 if (i->mask_perms) {
637 if (!(st.st_mode & 0111))
638 m &= ~0111;
639 if (!(st.st_mode & 0222))
640 m &= ~0222;
641 if (!(st.st_mode & 0444))
642 m &= ~0444;
643 if (!S_ISDIR(st.st_mode))
644 m &= ~07000; /* remove sticky/sgid/suid bit, unless directory */
645 }
646
647 if (m == (st.st_mode & 07777))
648 log_debug("\"%s\" has right mode %o", path, st.st_mode);
649 else {
650 log_debug("chmod \"%s\" to mode %o", path, m);
651 if (chmod(fn, m) < 0)
652 return log_error_errno(errno, "chmod() of %s via %s failed: %m", path, fn);
653 }
654 }
655
656 if ((i->uid != st.st_uid || i->gid != st.st_gid) &&
657 (i->uid_set || i->gid_set)) {
658 log_debug("chown \"%s\" to "UID_FMT"."GID_FMT,
659 path,
660 i->uid_set ? i->uid : UID_INVALID,
661 i->gid_set ? i->gid : GID_INVALID);
662 if (chown(fn,
663 i->uid_set ? i->uid : UID_INVALID,
664 i->gid_set ? i->gid : GID_INVALID) < 0)
665 return log_error_errno(errno, "chown() of %s via %s failed: %m", path, fn);
666 }
667 }
668
669 fd = safe_close(fd);
670
671 return label_fix(path, false, false);
672 }
673
674 static int parse_xattrs_from_arg(Item *i) {
675 const char *p;
676 int r;
677
678 assert(i);
679 assert(i->argument);
680
681 p = i->argument;
682
683 for (;;) {
684 _cleanup_free_ char *name = NULL, *value = NULL, *xattr = NULL, *xattr_replaced = NULL;
685
686 r = extract_first_word(&p, &xattr, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE);
687 if (r < 0)
688 log_warning_errno(r, "Failed to parse extended attribute '%s', ignoring: %m", p);
689 if (r <= 0)
690 break;
691
692 r = specifier_printf(xattr, specifier_table, NULL, &xattr_replaced);
693 if (r < 0)
694 return log_error_errno(r, "Failed to replace specifiers in extended attribute '%s': %m", xattr);
695
696 r = split_pair(xattr_replaced, "=", &name, &value);
697 if (r < 0) {
698 log_warning_errno(r, "Failed to parse extended attribute, ignoring: %s", xattr);
699 continue;
700 }
701
702 if (isempty(name) || isempty(value)) {
703 log_warning("Malformed extended attribute found, ignoring: %s", xattr);
704 continue;
705 }
706
707 if (strv_push_pair(&i->xattrs, name, value) < 0)
708 return log_oom();
709
710 name = value = NULL;
711 }
712
713 return 0;
714 }
715
716 static int path_set_xattrs(Item *i, const char *path) {
717 char **name, **value;
718
719 assert(i);
720 assert(path);
721
722 STRV_FOREACH_PAIR(name, value, i->xattrs) {
723 int n;
724
725 n = strlen(*value);
726 log_debug("Setting extended attribute '%s=%s' on %s.", *name, *value, path);
727 if (lsetxattr(path, *name, *value, n, 0) < 0)
728 return log_error_errno(errno, "Setting extended attribute %s=%s on %s failed: %m",
729 *name, *value, path);
730 }
731 return 0;
732 }
733
734 static int parse_acls_from_arg(Item *item) {
735 #ifdef HAVE_ACL
736 int r;
737
738 assert(item);
739
740 /* If force (= modify) is set, we will not modify the acl
741 * afterwards, so the mask can be added now if necessary. */
742
743 r = parse_acl(item->argument, &item->acl_access, &item->acl_default, !item->force);
744 if (r < 0)
745 log_warning_errno(r, "Failed to parse ACL \"%s\": %m. Ignoring", item->argument);
746 #else
747 log_warning_errno(ENOSYS, "ACLs are not supported. Ignoring");
748 #endif
749
750 return 0;
751 }
752
753 #ifdef HAVE_ACL
754 static int path_set_acl(const char *path, const char *pretty, acl_type_t type, acl_t acl, bool modify) {
755 _cleanup_(acl_free_charpp) char *t = NULL;
756 _cleanup_(acl_freep) acl_t dup = NULL;
757 int r;
758
759 /* Returns 0 for success, positive error if already warned,
760 * negative error otherwise. */
761
762 if (modify) {
763 r = acls_for_file(path, type, acl, &dup);
764 if (r < 0)
765 return r;
766
767 r = calc_acl_mask_if_needed(&dup);
768 if (r < 0)
769 return r;
770 } else {
771 dup = acl_dup(acl);
772 if (!dup)
773 return -errno;
774
775 /* the mask was already added earlier if needed */
776 }
777
778 r = add_base_acls_if_needed(&dup, path);
779 if (r < 0)
780 return r;
781
782 t = acl_to_any_text(dup, NULL, ',', TEXT_ABBREVIATE);
783 log_debug("Setting %s ACL %s on %s.",
784 type == ACL_TYPE_ACCESS ? "access" : "default",
785 strna(t), pretty);
786
787 r = acl_set_file(path, type, dup);
788 if (r < 0)
789 /* Return positive to indicate we already warned */
790 return -log_error_errno(errno,
791 "Setting %s ACL \"%s\" on %s failed: %m",
792 type == ACL_TYPE_ACCESS ? "access" : "default",
793 strna(t), pretty);
794
795 return 0;
796 }
797 #endif
798
799 static int path_set_acls(Item *item, const char *path) {
800 int r = 0;
801 #ifdef HAVE_ACL
802 char fn[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
803 _cleanup_close_ int fd = -1;
804 struct stat st;
805
806 assert(item);
807 assert(path);
808
809 fd = open(path, O_NOFOLLOW|O_CLOEXEC|O_PATH);
810 if (fd < 0)
811 return log_error_errno(errno, "Adjusting ACL of %s failed: %m", path);
812
813 if (fstatat(fd, "", &st, AT_EMPTY_PATH) < 0)
814 return log_error_errno(errno, "Failed to fstat() file %s: %m", path);
815
816 if (S_ISLNK(st.st_mode)) {
817 log_debug("Skipping ACL fix for symlink %s.", path);
818 return 0;
819 }
820
821 xsprintf(fn, "/proc/self/fd/%i", fd);
822
823 if (item->acl_access)
824 r = path_set_acl(fn, path, ACL_TYPE_ACCESS, item->acl_access, item->force);
825
826 if (r == 0 && item->acl_default)
827 r = path_set_acl(fn, path, ACL_TYPE_DEFAULT, item->acl_default, item->force);
828
829 if (r > 0)
830 return -r; /* already warned */
831 else if (r == -EOPNOTSUPP) {
832 log_debug_errno(r, "ACLs not supported by file system at %s", path);
833 return 0;
834 } else if (r < 0)
835 log_error_errno(r, "ACL operation on \"%s\" failed: %m", path);
836 #endif
837 return r;
838 }
839
840 #define ATTRIBUTES_ALL \
841 (FS_NOATIME_FL | \
842 FS_SYNC_FL | \
843 FS_DIRSYNC_FL | \
844 FS_APPEND_FL | \
845 FS_COMPR_FL | \
846 FS_NODUMP_FL | \
847 FS_EXTENT_FL | \
848 FS_IMMUTABLE_FL | \
849 FS_JOURNAL_DATA_FL | \
850 FS_SECRM_FL | \
851 FS_UNRM_FL | \
852 FS_NOTAIL_FL | \
853 FS_TOPDIR_FL | \
854 FS_NOCOW_FL)
855
856 static int parse_attribute_from_arg(Item *item) {
857
858 static const struct {
859 char character;
860 unsigned value;
861 } attributes[] = {
862 { 'A', FS_NOATIME_FL }, /* do not update atime */
863 { 'S', FS_SYNC_FL }, /* Synchronous updates */
864 { 'D', FS_DIRSYNC_FL }, /* dirsync behaviour (directories only) */
865 { 'a', FS_APPEND_FL }, /* writes to file may only append */
866 { 'c', FS_COMPR_FL }, /* Compress file */
867 { 'd', FS_NODUMP_FL }, /* do not dump file */
868 { 'e', FS_EXTENT_FL }, /* Extents */
869 { 'i', FS_IMMUTABLE_FL }, /* Immutable file */
870 { 'j', FS_JOURNAL_DATA_FL }, /* Reserved for ext3 */
871 { 's', FS_SECRM_FL }, /* Secure deletion */
872 { 'u', FS_UNRM_FL }, /* Undelete */
873 { 't', FS_NOTAIL_FL }, /* file tail should not be merged */
874 { 'T', FS_TOPDIR_FL }, /* Top of directory hierarchies */
875 { 'C', FS_NOCOW_FL }, /* Do not cow file */
876 };
877
878 enum {
879 MODE_ADD,
880 MODE_DEL,
881 MODE_SET
882 } mode = MODE_ADD;
883
884 unsigned value = 0, mask = 0;
885 const char *p;
886
887 assert(item);
888
889 p = item->argument;
890 if (p) {
891 if (*p == '+') {
892 mode = MODE_ADD;
893 p++;
894 } else if (*p == '-') {
895 mode = MODE_DEL;
896 p++;
897 } else if (*p == '=') {
898 mode = MODE_SET;
899 p++;
900 }
901 }
902
903 if (isempty(p) && mode != MODE_SET) {
904 log_error("Setting file attribute on '%s' needs an attribute specification.", item->path);
905 return -EINVAL;
906 }
907
908 for (; p && *p ; p++) {
909 unsigned i, v;
910
911 for (i = 0; i < ELEMENTSOF(attributes); i++)
912 if (*p == attributes[i].character)
913 break;
914
915 if (i >= ELEMENTSOF(attributes)) {
916 log_error("Unknown file attribute '%c' on '%s'.", *p, item->path);
917 return -EINVAL;
918 }
919
920 v = attributes[i].value;
921
922 SET_FLAG(value, v, (mode == MODE_ADD || mode == MODE_SET));
923
924 mask |= v;
925 }
926
927 if (mode == MODE_SET)
928 mask |= ATTRIBUTES_ALL;
929
930 assert(mask != 0);
931
932 item->attribute_mask = mask;
933 item->attribute_value = value;
934 item->attribute_set = true;
935
936 return 0;
937 }
938
939 static int path_set_attribute(Item *item, const char *path) {
940 _cleanup_close_ int fd = -1;
941 struct stat st;
942 unsigned f;
943 int r;
944
945 if (!item->attribute_set || item->attribute_mask == 0)
946 return 0;
947
948 fd = open(path, O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_NOATIME|O_NOFOLLOW);
949 if (fd < 0) {
950 if (errno == ELOOP)
951 return log_error_errno(errno, "Skipping file attributes adjustment on symlink %s.", path);
952
953 return log_error_errno(errno, "Cannot open '%s': %m", path);
954 }
955
956 if (fstat(fd, &st) < 0)
957 return log_error_errno(errno, "Cannot stat '%s': %m", path);
958
959 /* Issuing the file attribute ioctls on device nodes is not
960 * safe, as that will be delivered to the drivers, not the
961 * file system containing the device node. */
962 if (!S_ISREG(st.st_mode) && !S_ISDIR(st.st_mode)) {
963 log_error("Setting file flags is only supported on regular files and directories, cannot set on '%s'.", path);
964 return -EINVAL;
965 }
966
967 f = item->attribute_value & item->attribute_mask;
968
969 /* Mask away directory-specific flags */
970 if (!S_ISDIR(st.st_mode))
971 f &= ~FS_DIRSYNC_FL;
972
973 r = chattr_fd(fd, f, item->attribute_mask);
974 if (r < 0)
975 log_full_errno(r == -ENOTTY || r == -EOPNOTSUPP ? LOG_DEBUG : LOG_WARNING,
976 r,
977 "Cannot set file attribute for '%s', value=0x%08x, mask=0x%08x: %m",
978 path, item->attribute_value, item->attribute_mask);
979
980 return 0;
981 }
982
983 static int write_one_file(Item *i, const char *path) {
984 _cleanup_close_ int fd = -1;
985 int flags, r = 0;
986 struct stat st;
987
988 assert(i);
989 assert(path);
990
991 flags = i->type == CREATE_FILE ? O_CREAT|O_APPEND|O_NOFOLLOW :
992 i->type == TRUNCATE_FILE ? O_CREAT|O_TRUNC|O_NOFOLLOW : 0;
993
994 RUN_WITH_UMASK(0000) {
995 mac_selinux_create_file_prepare(path, S_IFREG);
996 fd = open(path, flags|O_NDELAY|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode);
997 mac_selinux_create_file_clear();
998 }
999
1000 if (fd < 0) {
1001 if (i->type == WRITE_FILE && errno == ENOENT) {
1002 log_debug_errno(errno, "Not writing \"%s\": %m", path);
1003 return 0;
1004 }
1005
1006 r = -errno;
1007 if (!i->argument && errno == EROFS && stat(path, &st) == 0 &&
1008 (i->type == CREATE_FILE || st.st_size == 0))
1009 goto check_mode;
1010
1011 return log_error_errno(r, "Failed to create file %s: %m", path);
1012 }
1013
1014 if (i->argument) {
1015 _cleanup_free_ char *unescaped = NULL, *replaced = NULL;
1016
1017 log_debug("%s to \"%s\".", i->type == CREATE_FILE ? "Appending" : "Writing", path);
1018
1019 r = cunescape(i->argument, 0, &unescaped);
1020 if (r < 0)
1021 return log_error_errno(r, "Failed to unescape parameter to write: %s", i->argument);
1022
1023 r = specifier_printf(unescaped, specifier_table, NULL, &replaced);
1024 if (r < 0)
1025 return log_error_errno(r, "Failed to replace specifiers in parameter to write '%s': %m", unescaped);
1026
1027 r = loop_write(fd, replaced, strlen(replaced), false);
1028 if (r < 0)
1029 return log_error_errno(r, "Failed to write file \"%s\": %m", path);
1030 } else
1031 log_debug("\"%s\" has been created.", path);
1032
1033 fd = safe_close(fd);
1034
1035 if (stat(path, &st) < 0)
1036 return log_error_errno(errno, "stat(%s) failed: %m", path);
1037
1038 check_mode:
1039 if (!S_ISREG(st.st_mode)) {
1040 log_error("%s is not a file.", path);
1041 return -EEXIST;
1042 }
1043
1044 r = path_set_perms(i, path);
1045 if (r < 0)
1046 return r;
1047
1048 return 0;
1049 }
1050
1051 typedef int (*action_t)(Item *, const char *);
1052
1053 static int item_do_children(Item *i, const char *path, action_t action) {
1054 _cleanup_closedir_ DIR *d;
1055 struct dirent *de;
1056 int r = 0;
1057
1058 assert(i);
1059 assert(path);
1060
1061 /* This returns the first error we run into, but nevertheless
1062 * tries to go on */
1063
1064 d = opendir_nomod(path);
1065 if (!d)
1066 return errno == ENOENT || errno == ENOTDIR ? 0 : -errno;
1067
1068 FOREACH_DIRENT_ALL(de, d, r = -errno) {
1069 _cleanup_free_ char *p = NULL;
1070 int q;
1071
1072 if (dot_or_dot_dot(de->d_name))
1073 continue;
1074
1075 p = strjoin(path, "/", de->d_name);
1076 if (!p)
1077 return -ENOMEM;
1078
1079 q = action(i, p);
1080 if (q < 0 && q != -ENOENT && r == 0)
1081 r = q;
1082
1083 if (IN_SET(de->d_type, DT_UNKNOWN, DT_DIR)) {
1084 q = item_do_children(i, p, action);
1085 if (q < 0 && r == 0)
1086 r = q;
1087 }
1088 }
1089
1090 return r;
1091 }
1092
1093 static int glob_item(Item *i, action_t action, bool recursive) {
1094 _cleanup_globfree_ glob_t g = {
1095 .gl_opendir = (void *(*)(const char *)) opendir_nomod,
1096 };
1097 int r = 0, k;
1098 char **fn;
1099
1100 k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g);
1101 if (k < 0 && k != -ENOENT)
1102 return log_error_errno(k, "glob(%s) failed: %m", i->path);
1103
1104 STRV_FOREACH(fn, g.gl_pathv) {
1105 k = action(i, *fn);
1106 if (k < 0 && r == 0)
1107 r = k;
1108
1109 if (recursive) {
1110 k = item_do_children(i, *fn, action);
1111 if (k < 0 && r == 0)
1112 r = k;
1113 }
1114 }
1115
1116 return r;
1117 }
1118
1119 typedef enum {
1120 CREATION_NORMAL,
1121 CREATION_EXISTING,
1122 CREATION_FORCE,
1123 _CREATION_MODE_MAX,
1124 _CREATION_MODE_INVALID = -1
1125 } CreationMode;
1126
1127 static const char *creation_mode_verb_table[_CREATION_MODE_MAX] = {
1128 [CREATION_NORMAL] = "Created",
1129 [CREATION_EXISTING] = "Found existing",
1130 [CREATION_FORCE] = "Created replacement",
1131 };
1132
1133 DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb, CreationMode);
1134
1135 static int create_item(Item *i) {
1136 _cleanup_free_ char *resolved = NULL;
1137 struct stat st;
1138 int r = 0;
1139 int q = 0;
1140 CreationMode creation;
1141
1142 assert(i);
1143
1144 log_debug("Running create action for entry %c %s", (char) i->type, i->path);
1145
1146 switch (i->type) {
1147
1148 case IGNORE_PATH:
1149 case IGNORE_DIRECTORY_PATH:
1150 case REMOVE_PATH:
1151 case RECURSIVE_REMOVE_PATH:
1152 return 0;
1153
1154 case CREATE_FILE:
1155 case TRUNCATE_FILE:
1156 r = write_one_file(i, i->path);
1157 if (r < 0)
1158 return r;
1159 break;
1160
1161 case COPY_FILES: {
1162 r = specifier_printf(i->argument, specifier_table, NULL, &resolved);
1163 if (r < 0)
1164 return log_error_errno(r, "Failed to substitute specifiers in copy source %s: %m", i->argument);
1165
1166 log_debug("Copying tree \"%s\" to \"%s\".", resolved, i->path);
1167 r = copy_tree(resolved, i->path, i->uid_set ? i->uid : UID_INVALID, i->gid_set ? i->gid : GID_INVALID, COPY_REFLINK);
1168
1169 if (r == -EROFS && stat(i->path, &st) == 0)
1170 r = -EEXIST;
1171
1172 if (r < 0) {
1173 struct stat a, b;
1174
1175 if (r != -EEXIST)
1176 return log_error_errno(r, "Failed to copy files to %s: %m", i->path);
1177
1178 if (stat(resolved, &a) < 0)
1179 return log_error_errno(errno, "stat(%s) failed: %m", resolved);
1180
1181 if (stat(i->path, &b) < 0)
1182 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1183
1184 if ((a.st_mode ^ b.st_mode) & S_IFMT) {
1185 log_debug("Can't copy to %s, file exists already and is of different type", i->path);
1186 return 0;
1187 }
1188 }
1189
1190 r = path_set_perms(i, i->path);
1191 if (r < 0)
1192 return r;
1193
1194 break;
1195
1196 case WRITE_FILE:
1197 r = glob_item(i, write_one_file, false);
1198 if (r < 0)
1199 return r;
1200
1201 break;
1202
1203 case CREATE_DIRECTORY:
1204 case TRUNCATE_DIRECTORY:
1205 case CREATE_SUBVOLUME:
1206 case CREATE_SUBVOLUME_INHERIT_QUOTA:
1207 case CREATE_SUBVOLUME_NEW_QUOTA:
1208 RUN_WITH_UMASK(0000)
1209 mkdir_parents_label(i->path, 0755);
1210
1211 if (IN_SET(i->type, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA)) {
1212
1213 if (btrfs_is_subvol(isempty(arg_root) ? "/" : arg_root) <= 0)
1214
1215 /* Don't create a subvolume unless the
1216 * root directory is one, too. We do
1217 * this under the assumption that if
1218 * the root directory is just a plain
1219 * directory (i.e. very light-weight),
1220 * we shouldn't try to split it up
1221 * into subvolumes (i.e. more
1222 * heavy-weight). Thus, chroot()
1223 * environments and suchlike will get
1224 * a full brtfs subvolume set up below
1225 * their tree only if they
1226 * specifically set up a btrfs
1227 * subvolume for the root dir too. */
1228
1229 r = -ENOTTY;
1230 else {
1231 RUN_WITH_UMASK((~i->mode) & 0777)
1232 r = btrfs_subvol_make(i->path);
1233 }
1234 } else
1235 r = 0;
1236
1237 if (IN_SET(i->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY) || r == -ENOTTY)
1238 RUN_WITH_UMASK(0000)
1239 r = mkdir_label(i->path, i->mode);
1240
1241 if (r < 0) {
1242 int k;
1243
1244 if (r != -EEXIST && r != -EROFS)
1245 return log_error_errno(r, "Failed to create directory or subvolume \"%s\": %m", i->path);
1246
1247 k = is_dir(i->path, false);
1248 if (k == -ENOENT && r == -EROFS)
1249 return log_error_errno(r, "%s does not exist and cannot be created as the file system is read-only.", i->path);
1250 if (k < 0)
1251 return log_error_errno(k, "Failed to check if %s exists: %m", i->path);
1252 if (!k) {
1253 log_warning("\"%s\" already exists and is not a directory.", i->path);
1254 return 0;
1255 }
1256
1257 creation = CREATION_EXISTING;
1258 } else
1259 creation = CREATION_NORMAL;
1260
1261 log_debug("%s directory \"%s\".", creation_mode_verb_to_string(creation), i->path);
1262
1263 if (IN_SET(i->type, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)) {
1264 r = btrfs_subvol_auto_qgroup(i->path, 0, i->type == CREATE_SUBVOLUME_NEW_QUOTA);
1265 if (r == -ENOTTY)
1266 log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (unsupported fs or dir not a subvolume): %m", i->path);
1267 else if (r == -EROFS)
1268 log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (fs is read-only).", i->path);
1269 else if (r == -ENOPROTOOPT)
1270 log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (quota support is disabled).", i->path);
1271 else if (r < 0)
1272 q = log_error_errno(r, "Failed to adjust quota for subvolume \"%s\": %m", i->path);
1273 else if (r > 0)
1274 log_debug("Adjusted quota for subvolume \"%s\".", i->path);
1275 else if (r == 0)
1276 log_debug("Quota for subvolume \"%s\" already in place, no change made.", i->path);
1277 }
1278
1279 /* fall through */
1280
1281 case EMPTY_DIRECTORY:
1282 r = path_set_perms(i, i->path);
1283 if (q < 0)
1284 return q;
1285 if (r < 0)
1286 return r;
1287
1288 break;
1289
1290 case CREATE_FIFO:
1291 RUN_WITH_UMASK(0000) {
1292 mac_selinux_create_file_prepare(i->path, S_IFIFO);
1293 r = mkfifo(i->path, i->mode);
1294 mac_selinux_create_file_clear();
1295 }
1296
1297 if (r < 0) {
1298 if (errno != EEXIST)
1299 return log_error_errno(errno, "Failed to create fifo %s: %m", i->path);
1300
1301 if (lstat(i->path, &st) < 0)
1302 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1303
1304 if (!S_ISFIFO(st.st_mode)) {
1305
1306 if (i->force) {
1307 RUN_WITH_UMASK(0000) {
1308 mac_selinux_create_file_prepare(i->path, S_IFIFO);
1309 r = mkfifo_atomic(i->path, i->mode);
1310 mac_selinux_create_file_clear();
1311 }
1312
1313 if (r < 0)
1314 return log_error_errno(r, "Failed to create fifo %s: %m", i->path);
1315 creation = CREATION_FORCE;
1316 } else {
1317 log_warning("\"%s\" already exists and is not a fifo.", i->path);
1318 return 0;
1319 }
1320 } else
1321 creation = CREATION_EXISTING;
1322 } else
1323 creation = CREATION_NORMAL;
1324 log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation), i->path);
1325
1326 r = path_set_perms(i, i->path);
1327 if (r < 0)
1328 return r;
1329
1330 break;
1331 }
1332
1333 case CREATE_SYMLINK: {
1334 r = specifier_printf(i->argument, specifier_table, NULL, &resolved);
1335 if (r < 0)
1336 return log_error_errno(r, "Failed to substitute specifiers in symlink target %s: %m", i->argument);
1337
1338 mac_selinux_create_file_prepare(i->path, S_IFLNK);
1339 r = symlink(resolved, i->path);
1340 mac_selinux_create_file_clear();
1341
1342 if (r < 0) {
1343 _cleanup_free_ char *x = NULL;
1344
1345 if (errno != EEXIST)
1346 return log_error_errno(errno, "symlink(%s, %s) failed: %m", resolved, i->path);
1347
1348 r = readlink_malloc(i->path, &x);
1349 if (r < 0 || !streq(resolved, x)) {
1350
1351 if (i->force) {
1352 mac_selinux_create_file_prepare(i->path, S_IFLNK);
1353 r = symlink_atomic(resolved, i->path);
1354 mac_selinux_create_file_clear();
1355
1356 if (r < 0)
1357 return log_error_errno(r, "symlink(%s, %s) failed: %m", resolved, i->path);
1358
1359 creation = CREATION_FORCE;
1360 } else {
1361 log_debug("\"%s\" is not a symlink or does not point to the correct path.", i->path);
1362 return 0;
1363 }
1364 } else
1365 creation = CREATION_EXISTING;
1366 } else
1367
1368 creation = CREATION_NORMAL;
1369 log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation), i->path);
1370 break;
1371 }
1372
1373 case CREATE_BLOCK_DEVICE:
1374 case CREATE_CHAR_DEVICE: {
1375 mode_t file_type;
1376
1377 if (have_effective_cap(CAP_MKNOD) == 0) {
1378 /* In a container we lack CAP_MKNOD. We
1379 shouldn't attempt to create the device node in
1380 that case to avoid noise, and we don't support
1381 virtualized devices in containers anyway. */
1382
1383 log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path);
1384 return 0;
1385 }
1386
1387 file_type = i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR;
1388
1389 RUN_WITH_UMASK(0000) {
1390 mac_selinux_create_file_prepare(i->path, file_type);
1391 r = mknod(i->path, i->mode | file_type, i->major_minor);
1392 mac_selinux_create_file_clear();
1393 }
1394
1395 if (r < 0) {
1396 if (errno == EPERM) {
1397 log_debug("We lack permissions, possibly because of cgroup configuration; "
1398 "skipping creation of device node %s.", i->path);
1399 return 0;
1400 }
1401
1402 if (errno != EEXIST)
1403 return log_error_errno(errno, "Failed to create device node %s: %m", i->path);
1404
1405 if (lstat(i->path, &st) < 0)
1406 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1407
1408 if ((st.st_mode & S_IFMT) != file_type) {
1409
1410 if (i->force) {
1411
1412 RUN_WITH_UMASK(0000) {
1413 mac_selinux_create_file_prepare(i->path, file_type);
1414 r = mknod_atomic(i->path, i->mode | file_type, i->major_minor);
1415 mac_selinux_create_file_clear();
1416 }
1417
1418 if (r < 0)
1419 return log_error_errno(r, "Failed to create device node \"%s\": %m", i->path);
1420 creation = CREATION_FORCE;
1421 } else {
1422 log_debug("%s is not a device node.", i->path);
1423 return 0;
1424 }
1425 } else
1426 creation = CREATION_EXISTING;
1427 } else
1428 creation = CREATION_NORMAL;
1429
1430 log_debug("%s %s device node \"%s\" %u:%u.",
1431 creation_mode_verb_to_string(creation),
1432 i->type == CREATE_BLOCK_DEVICE ? "block" : "char",
1433 i->path, major(i->mode), minor(i->mode));
1434
1435 r = path_set_perms(i, i->path);
1436 if (r < 0)
1437 return r;
1438
1439 break;
1440 }
1441
1442 case ADJUST_MODE:
1443 case RELABEL_PATH:
1444 r = glob_item(i, path_set_perms, false);
1445 if (r < 0)
1446 return r;
1447 break;
1448
1449 case RECURSIVE_RELABEL_PATH:
1450 r = glob_item(i, path_set_perms, true);
1451 if (r < 0)
1452 return r;
1453 break;
1454
1455 case SET_XATTR:
1456 r = glob_item(i, path_set_xattrs, false);
1457 if (r < 0)
1458 return r;
1459 break;
1460
1461 case RECURSIVE_SET_XATTR:
1462 r = glob_item(i, path_set_xattrs, true);
1463 if (r < 0)
1464 return r;
1465 break;
1466
1467 case SET_ACL:
1468 r = glob_item(i, path_set_acls, false);
1469 if (r < 0)
1470 return r;
1471 break;
1472
1473 case RECURSIVE_SET_ACL:
1474 r = glob_item(i, path_set_acls, true);
1475 if (r < 0)
1476 return r;
1477 break;
1478
1479 case SET_ATTRIBUTE:
1480 r = glob_item(i, path_set_attribute, false);
1481 if (r < 0)
1482 return r;
1483 break;
1484
1485 case RECURSIVE_SET_ATTRIBUTE:
1486 r = glob_item(i, path_set_attribute, true);
1487 if (r < 0)
1488 return r;
1489 break;
1490 }
1491
1492 return 0;
1493 }
1494
1495 static int remove_item_instance(Item *i, const char *instance) {
1496 int r;
1497
1498 assert(i);
1499
1500 switch (i->type) {
1501
1502 case REMOVE_PATH:
1503 if (remove(instance) < 0 && errno != ENOENT)
1504 return log_error_errno(errno, "rm(%s): %m", instance);
1505
1506 break;
1507
1508 case TRUNCATE_DIRECTORY:
1509 case RECURSIVE_REMOVE_PATH:
1510 /* FIXME: we probably should use dir_cleanup() here
1511 * instead of rm_rf() so that 'x' is honoured. */
1512 log_debug("rm -rf \"%s\"", instance);
1513 r = rm_rf(instance, (i->type == RECURSIVE_REMOVE_PATH ? REMOVE_ROOT|REMOVE_SUBVOLUME : 0) | REMOVE_PHYSICAL);
1514 if (r < 0 && r != -ENOENT)
1515 return log_error_errno(r, "rm_rf(%s): %m", instance);
1516
1517 break;
1518
1519 default:
1520 assert_not_reached("wut?");
1521 }
1522
1523 return 0;
1524 }
1525
1526 static int remove_item(Item *i) {
1527 assert(i);
1528
1529 log_debug("Running remove action for entry %c %s", (char) i->type, i->path);
1530
1531 switch (i->type) {
1532
1533 case REMOVE_PATH:
1534 case TRUNCATE_DIRECTORY:
1535 case RECURSIVE_REMOVE_PATH:
1536 return glob_item(i, remove_item_instance, false);
1537
1538 default:
1539 return 0;
1540 }
1541 }
1542
1543 static int clean_item_instance(Item *i, const char* instance) {
1544 _cleanup_closedir_ DIR *d = NULL;
1545 struct stat s, ps;
1546 bool mountpoint;
1547 usec_t cutoff, n;
1548 char timestamp[FORMAT_TIMESTAMP_MAX];
1549
1550 assert(i);
1551
1552 if (!i->age_set)
1553 return 0;
1554
1555 n = now(CLOCK_REALTIME);
1556 if (n < i->age)
1557 return 0;
1558
1559 cutoff = n - i->age;
1560
1561 d = opendir_nomod(instance);
1562 if (!d) {
1563 if (IN_SET(errno, ENOENT, ENOTDIR)) {
1564 log_debug_errno(errno, "Directory \"%s\": %m", instance);
1565 return 0;
1566 }
1567
1568 return log_error_errno(errno, "Failed to open directory %s: %m", instance);
1569 }
1570
1571 if (fstat(dirfd(d), &s) < 0)
1572 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1573
1574 if (!S_ISDIR(s.st_mode)) {
1575 log_error("%s is not a directory.", i->path);
1576 return -ENOTDIR;
1577 }
1578
1579 if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0)
1580 return log_error_errno(errno, "stat(%s/..) failed: %m", i->path);
1581
1582 mountpoint = s.st_dev != ps.st_dev || s.st_ino == ps.st_ino;
1583
1584 log_debug("Cleanup threshold for %s \"%s\" is %s",
1585 mountpoint ? "mount point" : "directory",
1586 instance,
1587 format_timestamp_us(timestamp, sizeof(timestamp), cutoff));
1588
1589 return dir_cleanup(i, instance, d, &s, cutoff, s.st_dev, mountpoint,
1590 MAX_DEPTH, i->keep_first_level);
1591 }
1592
1593 static int clean_item(Item *i) {
1594 assert(i);
1595
1596 log_debug("Running clean action for entry %c %s", (char) i->type, i->path);
1597
1598 switch (i->type) {
1599 case CREATE_DIRECTORY:
1600 case CREATE_SUBVOLUME:
1601 case CREATE_SUBVOLUME_INHERIT_QUOTA:
1602 case CREATE_SUBVOLUME_NEW_QUOTA:
1603 case EMPTY_DIRECTORY:
1604 case TRUNCATE_DIRECTORY:
1605 case IGNORE_PATH:
1606 case COPY_FILES:
1607 clean_item_instance(i, i->path);
1608 return 0;
1609 case IGNORE_DIRECTORY_PATH:
1610 return glob_item(i, clean_item_instance, false);
1611 default:
1612 return 0;
1613 }
1614 }
1615
1616 static int process_item_array(ItemArray *array);
1617
1618 static int process_item(Item *i) {
1619 int r, q, p, t = 0;
1620 _cleanup_free_ char *prefix = NULL;
1621
1622 assert(i);
1623
1624 if (i->done)
1625 return 0;
1626
1627 i->done = true;
1628
1629 prefix = malloc(strlen(i->path) + 1);
1630 if (!prefix)
1631 return log_oom();
1632
1633 PATH_FOREACH_PREFIX(prefix, i->path) {
1634 ItemArray *j;
1635
1636 j = ordered_hashmap_get(items, prefix);
1637 if (j) {
1638 int s;
1639
1640 s = process_item_array(j);
1641 if (s < 0 && t == 0)
1642 t = s;
1643 }
1644 }
1645
1646 r = arg_create ? create_item(i) : 0;
1647 q = arg_remove ? remove_item(i) : 0;
1648 p = arg_clean ? clean_item(i) : 0;
1649
1650 return t < 0 ? t :
1651 r < 0 ? r :
1652 q < 0 ? q :
1653 p;
1654 }
1655
1656 static int process_item_array(ItemArray *array) {
1657 unsigned n;
1658 int r = 0, k;
1659
1660 assert(array);
1661
1662 for (n = 0; n < array->count; n++) {
1663 k = process_item(array->items + n);
1664 if (k < 0 && r == 0)
1665 r = k;
1666 }
1667
1668 return r;
1669 }
1670
1671 static void item_free_contents(Item *i) {
1672 assert(i);
1673 free(i->path);
1674 free(i->argument);
1675 strv_free(i->xattrs);
1676
1677 #ifdef HAVE_ACL
1678 acl_free(i->acl_access);
1679 acl_free(i->acl_default);
1680 #endif
1681 }
1682
1683 static void item_array_free(ItemArray *a) {
1684 unsigned n;
1685
1686 if (!a)
1687 return;
1688
1689 for (n = 0; n < a->count; n++)
1690 item_free_contents(a->items + n);
1691 free(a->items);
1692 free(a);
1693 }
1694
1695 static int item_compare(const void *a, const void *b) {
1696 const Item *x = a, *y = b;
1697
1698 /* Make sure that the ownership taking item is put first, so
1699 * that we first create the node, and then can adjust it */
1700
1701 if (takes_ownership(x->type) && !takes_ownership(y->type))
1702 return -1;
1703 if (!takes_ownership(x->type) && takes_ownership(y->type))
1704 return 1;
1705
1706 return (int) x->type - (int) y->type;
1707 }
1708
1709 static bool item_compatible(Item *a, Item *b) {
1710 assert(a);
1711 assert(b);
1712 assert(streq(a->path, b->path));
1713
1714 if (takes_ownership(a->type) && takes_ownership(b->type))
1715 /* check if the items are the same */
1716 return streq_ptr(a->argument, b->argument) &&
1717
1718 a->uid_set == b->uid_set &&
1719 a->uid == b->uid &&
1720
1721 a->gid_set == b->gid_set &&
1722 a->gid == b->gid &&
1723
1724 a->mode_set == b->mode_set &&
1725 a->mode == b->mode &&
1726
1727 a->age_set == b->age_set &&
1728 a->age == b->age &&
1729
1730 a->mask_perms == b->mask_perms &&
1731
1732 a->keep_first_level == b->keep_first_level &&
1733
1734 a->major_minor == b->major_minor;
1735
1736 return true;
1737 }
1738
1739 static bool should_include_path(const char *path) {
1740 char **prefix;
1741
1742 STRV_FOREACH(prefix, arg_exclude_prefixes)
1743 if (path_startswith(path, *prefix)) {
1744 log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.",
1745 path, *prefix);
1746 return false;
1747 }
1748
1749 STRV_FOREACH(prefix, arg_include_prefixes)
1750 if (path_startswith(path, *prefix)) {
1751 log_debug("Entry \"%s\" matches include prefix \"%s\".", path, *prefix);
1752 return true;
1753 }
1754
1755 /* no matches, so we should include this path only if we
1756 * have no whitelist at all */
1757 if (strv_length(arg_include_prefixes) == 0)
1758 return true;
1759
1760 log_debug("Entry \"%s\" does not match any include prefix, skipping.", path);
1761 return false;
1762 }
1763
1764 static int parse_line(const char *fname, unsigned line, const char *buffer) {
1765
1766 _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL;
1767 _cleanup_(item_free_contents) Item i = {};
1768 ItemArray *existing;
1769 OrderedHashmap *h;
1770 int r, pos;
1771 bool force = false, boot = false;
1772
1773 assert(fname);
1774 assert(line >= 1);
1775 assert(buffer);
1776
1777 r = extract_many_words(
1778 &buffer,
1779 NULL,
1780 EXTRACT_QUOTES,
1781 &action,
1782 &path,
1783 &mode,
1784 &user,
1785 &group,
1786 &age,
1787 NULL);
1788 if (r < 0)
1789 return log_error_errno(r, "[%s:%u] Failed to parse line: %m", fname, line);
1790 else if (r < 2) {
1791 log_error("[%s:%u] Syntax error.", fname, line);
1792 return -EIO;
1793 }
1794
1795 if (!isempty(buffer) && !streq(buffer, "-")) {
1796 i.argument = strdup(buffer);
1797 if (!i.argument)
1798 return log_oom();
1799 }
1800
1801 if (isempty(action)) {
1802 log_error("[%s:%u] Command too short '%s'.", fname, line, action);
1803 return -EINVAL;
1804 }
1805
1806 for (pos = 1; action[pos]; pos++) {
1807 if (action[pos] == '!' && !boot)
1808 boot = true;
1809 else if (action[pos] == '+' && !force)
1810 force = true;
1811 else {
1812 log_error("[%s:%u] Unknown modifiers in command '%s'",
1813 fname, line, action);
1814 return -EINVAL;
1815 }
1816 }
1817
1818 if (boot && !arg_boot) {
1819 log_debug("Ignoring entry %s \"%s\" because --boot is not specified.",
1820 action, path);
1821 return 0;
1822 }
1823
1824 i.type = action[0];
1825 i.force = force;
1826
1827 r = specifier_printf(path, specifier_table, NULL, &i.path);
1828 if (r < 0) {
1829 log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, path);
1830 return r;
1831 }
1832
1833 switch (i.type) {
1834
1835 case CREATE_DIRECTORY:
1836 case CREATE_SUBVOLUME:
1837 case CREATE_SUBVOLUME_INHERIT_QUOTA:
1838 case CREATE_SUBVOLUME_NEW_QUOTA:
1839 case EMPTY_DIRECTORY:
1840 case TRUNCATE_DIRECTORY:
1841 case CREATE_FIFO:
1842 case IGNORE_PATH:
1843 case IGNORE_DIRECTORY_PATH:
1844 case REMOVE_PATH:
1845 case RECURSIVE_REMOVE_PATH:
1846 case ADJUST_MODE:
1847 case RELABEL_PATH:
1848 case RECURSIVE_RELABEL_PATH:
1849 if (i.argument)
1850 log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname, line, i.type);
1851
1852 break;
1853
1854 case CREATE_FILE:
1855 case TRUNCATE_FILE:
1856 break;
1857
1858 case CREATE_SYMLINK:
1859 if (!i.argument) {
1860 i.argument = strappend("/usr/share/factory/", i.path);
1861 if (!i.argument)
1862 return log_oom();
1863 }
1864 break;
1865
1866 case WRITE_FILE:
1867 if (!i.argument) {
1868 log_error("[%s:%u] Write file requires argument.", fname, line);
1869 return -EBADMSG;
1870 }
1871 break;
1872
1873 case COPY_FILES:
1874 if (!i.argument) {
1875 i.argument = strappend("/usr/share/factory/", i.path);
1876 if (!i.argument)
1877 return log_oom();
1878 } else if (!path_is_absolute(i.argument)) {
1879 log_error("[%s:%u] Source path is not absolute.", fname, line);
1880 return -EBADMSG;
1881 }
1882
1883 path_kill_slashes(i.argument);
1884 break;
1885
1886 case CREATE_CHAR_DEVICE:
1887 case CREATE_BLOCK_DEVICE: {
1888 unsigned major, minor;
1889
1890 if (!i.argument) {
1891 log_error("[%s:%u] Device file requires argument.", fname, line);
1892 return -EBADMSG;
1893 }
1894
1895 if (sscanf(i.argument, "%u:%u", &major, &minor) != 2) {
1896 log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname, line, i.argument);
1897 return -EBADMSG;
1898 }
1899
1900 i.major_minor = makedev(major, minor);
1901 break;
1902 }
1903
1904 case SET_XATTR:
1905 case RECURSIVE_SET_XATTR:
1906 if (!i.argument) {
1907 log_error("[%s:%u] Set extended attribute requires argument.", fname, line);
1908 return -EBADMSG;
1909 }
1910 r = parse_xattrs_from_arg(&i);
1911 if (r < 0)
1912 return r;
1913 break;
1914
1915 case SET_ACL:
1916 case RECURSIVE_SET_ACL:
1917 if (!i.argument) {
1918 log_error("[%s:%u] Set ACLs requires argument.", fname, line);
1919 return -EBADMSG;
1920 }
1921 r = parse_acls_from_arg(&i);
1922 if (r < 0)
1923 return r;
1924 break;
1925
1926 case SET_ATTRIBUTE:
1927 case RECURSIVE_SET_ATTRIBUTE:
1928 if (!i.argument) {
1929 log_error("[%s:%u] Set file attribute requires argument.", fname, line);
1930 return -EBADMSG;
1931 }
1932 r = parse_attribute_from_arg(&i);
1933 if (r < 0)
1934 return r;
1935 break;
1936
1937 default:
1938 log_error("[%s:%u] Unknown command type '%c'.", fname, line, (char) i.type);
1939 return -EBADMSG;
1940 }
1941
1942 if (!path_is_absolute(i.path)) {
1943 log_error("[%s:%u] Path '%s' not absolute.", fname, line, i.path);
1944 return -EBADMSG;
1945 }
1946
1947 path_kill_slashes(i.path);
1948
1949 if (!should_include_path(i.path))
1950 return 0;
1951
1952 if (arg_root) {
1953 char *p;
1954
1955 p = prefix_root(arg_root, i.path);
1956 if (!p)
1957 return log_oom();
1958
1959 free(i.path);
1960 i.path = p;
1961 }
1962
1963 if (!isempty(user) && !streq(user, "-")) {
1964 const char *u = user;
1965
1966 r = get_user_creds(&u, &i.uid, NULL, NULL, NULL);
1967 if (r < 0) {
1968 log_error("[%s:%u] Unknown user '%s'.", fname, line, user);
1969 return r;
1970 }
1971
1972 i.uid_set = true;
1973 }
1974
1975 if (!isempty(group) && !streq(group, "-")) {
1976 const char *g = group;
1977
1978 r = get_group_creds(&g, &i.gid);
1979 if (r < 0) {
1980 log_error("[%s:%u] Unknown group '%s'.", fname, line, group);
1981 return r;
1982 }
1983
1984 i.gid_set = true;
1985 }
1986
1987 if (!isempty(mode) && !streq(mode, "-")) {
1988 const char *mm = mode;
1989 unsigned m;
1990
1991 if (*mm == '~') {
1992 i.mask_perms = true;
1993 mm++;
1994 }
1995
1996 if (parse_mode(mm, &m) < 0) {
1997 log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode);
1998 return -EBADMSG;
1999 }
2000
2001 i.mode = m;
2002 i.mode_set = true;
2003 } else
2004 i.mode = IN_SET(i.type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA) ? 0755 : 0644;
2005
2006 if (!isempty(age) && !streq(age, "-")) {
2007 const char *a = age;
2008
2009 if (*a == '~') {
2010 i.keep_first_level = true;
2011 a++;
2012 }
2013
2014 if (parse_sec(a, &i.age) < 0) {
2015 log_error("[%s:%u] Invalid age '%s'.", fname, line, age);
2016 return -EBADMSG;
2017 }
2018
2019 i.age_set = true;
2020 }
2021
2022 h = needs_glob(i.type) ? globs : items;
2023
2024 existing = ordered_hashmap_get(h, i.path);
2025 if (existing) {
2026 unsigned n;
2027
2028 for (n = 0; n < existing->count; n++) {
2029 if (!item_compatible(existing->items + n, &i)) {
2030 log_warning("[%s:%u] Duplicate line for path \"%s\", ignoring.",
2031 fname, line, i.path);
2032 return 0;
2033 }
2034 }
2035 } else {
2036 existing = new0(ItemArray, 1);
2037 r = ordered_hashmap_put(h, i.path, existing);
2038 if (r < 0)
2039 return log_oom();
2040 }
2041
2042 if (!GREEDY_REALLOC(existing->items, existing->size, existing->count + 1))
2043 return log_oom();
2044
2045 memcpy(existing->items + existing->count++, &i, sizeof(i));
2046
2047 /* Sort item array, to enforce stable ordering of application */
2048 qsort_safe(existing->items, existing->count, sizeof(Item), item_compare);
2049
2050 zero(i);
2051 return 0;
2052 }
2053
2054 static void help(void) {
2055 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
2056 "Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
2057 " -h --help Show this help\n"
2058 " --version Show package version\n"
2059 " --create Create marked files/directories\n"
2060 " --clean Clean up marked directories\n"
2061 " --remove Remove marked files/directories\n"
2062 " --boot Execute actions only safe at boot\n"
2063 " --prefix=PATH Only apply rules with the specified prefix\n"
2064 " --exclude-prefix=PATH Ignore rules with the specified prefix\n"
2065 " --root=PATH Operate on an alternate filesystem root\n",
2066 program_invocation_short_name);
2067 }
2068
2069 static int parse_argv(int argc, char *argv[]) {
2070
2071 enum {
2072 ARG_VERSION = 0x100,
2073 ARG_CREATE,
2074 ARG_CLEAN,
2075 ARG_REMOVE,
2076 ARG_BOOT,
2077 ARG_PREFIX,
2078 ARG_EXCLUDE_PREFIX,
2079 ARG_ROOT,
2080 };
2081
2082 static const struct option options[] = {
2083 { "help", no_argument, NULL, 'h' },
2084 { "version", no_argument, NULL, ARG_VERSION },
2085 { "create", no_argument, NULL, ARG_CREATE },
2086 { "clean", no_argument, NULL, ARG_CLEAN },
2087 { "remove", no_argument, NULL, ARG_REMOVE },
2088 { "boot", no_argument, NULL, ARG_BOOT },
2089 { "prefix", required_argument, NULL, ARG_PREFIX },
2090 { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX },
2091 { "root", required_argument, NULL, ARG_ROOT },
2092 {}
2093 };
2094
2095 int c, r;
2096
2097 assert(argc >= 0);
2098 assert(argv);
2099
2100 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
2101
2102 switch (c) {
2103
2104 case 'h':
2105 help();
2106 return 0;
2107
2108 case ARG_VERSION:
2109 return version();
2110
2111 case ARG_CREATE:
2112 arg_create = true;
2113 break;
2114
2115 case ARG_CLEAN:
2116 arg_clean = true;
2117 break;
2118
2119 case ARG_REMOVE:
2120 arg_remove = true;
2121 break;
2122
2123 case ARG_BOOT:
2124 arg_boot = true;
2125 break;
2126
2127 case ARG_PREFIX:
2128 if (strv_push(&arg_include_prefixes, optarg) < 0)
2129 return log_oom();
2130 break;
2131
2132 case ARG_EXCLUDE_PREFIX:
2133 if (strv_push(&arg_exclude_prefixes, optarg) < 0)
2134 return log_oom();
2135 break;
2136
2137 case ARG_ROOT:
2138 r = parse_path_argument_and_warn(optarg, true, &arg_root);
2139 if (r < 0)
2140 return r;
2141 break;
2142
2143 case '?':
2144 return -EINVAL;
2145
2146 default:
2147 assert_not_reached("Unhandled option");
2148 }
2149
2150 if (!arg_clean && !arg_create && !arg_remove) {
2151 log_error("You need to specify at least one of --clean, --create or --remove.");
2152 return -EINVAL;
2153 }
2154
2155 return 1;
2156 }
2157
2158 static int read_config_file(const char *fn, bool ignore_enoent) {
2159 _cleanup_fclose_ FILE *_f = NULL;
2160 FILE *f;
2161 char line[LINE_MAX];
2162 Iterator iterator;
2163 unsigned v = 0;
2164 Item *i;
2165 int r = 0;
2166
2167 assert(fn);
2168
2169 if (streq(fn, "-")) {
2170 log_debug("Reading config from stdin.");
2171 fn = "<stdin>";
2172 f = stdin;
2173 } else {
2174 r = search_and_fopen_nulstr(fn, "re", arg_root, conf_file_dirs, &_f);
2175 if (r < 0) {
2176 if (ignore_enoent && r == -ENOENT) {
2177 log_debug_errno(r, "Failed to open \"%s\", ignoring: %m", fn);
2178 return 0;
2179 }
2180
2181 return log_error_errno(r, "Failed to open '%s': %m", fn);
2182 }
2183 log_debug("Reading config file \"%s\".", fn);
2184 f = _f;
2185 }
2186
2187 FOREACH_LINE(line, f, break) {
2188 char *l;
2189 int k;
2190
2191 v++;
2192
2193 l = strstrip(line);
2194 if (*l == '#' || *l == 0)
2195 continue;
2196
2197 k = parse_line(fn, v, l);
2198 if (k < 0 && r == 0)
2199 r = k;
2200 }
2201
2202 /* we have to determine age parameter for each entry of type X */
2203 ORDERED_HASHMAP_FOREACH(i, globs, iterator) {
2204 Iterator iter;
2205 Item *j, *candidate_item = NULL;
2206
2207 if (i->type != IGNORE_DIRECTORY_PATH)
2208 continue;
2209
2210 ORDERED_HASHMAP_FOREACH(j, items, iter) {
2211 if (!IN_SET(j->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA))
2212 continue;
2213
2214 if (path_equal(j->path, i->path)) {
2215 candidate_item = j;
2216 break;
2217 }
2218
2219 if ((!candidate_item && path_startswith(i->path, j->path)) ||
2220 (candidate_item && path_startswith(j->path, candidate_item->path) && (fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0)))
2221 candidate_item = j;
2222 }
2223
2224 if (candidate_item && candidate_item->age_set) {
2225 i->age = candidate_item->age;
2226 i->age_set = true;
2227 }
2228 }
2229
2230 if (ferror(f)) {
2231 log_error_errno(errno, "Failed to read from file %s: %m", fn);
2232 if (r == 0)
2233 r = -EIO;
2234 }
2235
2236 return r;
2237 }
2238
2239 int main(int argc, char *argv[]) {
2240 int r, k;
2241 ItemArray *a;
2242 Iterator iterator;
2243
2244 r = parse_argv(argc, argv);
2245 if (r <= 0)
2246 goto finish;
2247
2248 log_set_target(LOG_TARGET_AUTO);
2249 log_parse_environment();
2250 log_open();
2251
2252 umask(0022);
2253
2254 mac_selinux_init();
2255
2256 items = ordered_hashmap_new(&string_hash_ops);
2257 globs = ordered_hashmap_new(&string_hash_ops);
2258
2259 if (!items || !globs) {
2260 r = log_oom();
2261 goto finish;
2262 }
2263
2264 r = 0;
2265
2266 if (optind < argc) {
2267 int j;
2268
2269 for (j = optind; j < argc; j++) {
2270 k = read_config_file(argv[j], false);
2271 if (k < 0 && r == 0)
2272 r = k;
2273 }
2274
2275 } else {
2276 _cleanup_strv_free_ char **files = NULL;
2277 char **f;
2278
2279 r = conf_files_list_nulstr(&files, ".conf", arg_root, conf_file_dirs);
2280 if (r < 0) {
2281 log_error_errno(r, "Failed to enumerate tmpfiles.d files: %m");
2282 goto finish;
2283 }
2284
2285 STRV_FOREACH(f, files) {
2286 k = read_config_file(*f, true);
2287 if (k < 0 && r == 0)
2288 r = k;
2289 }
2290 }
2291
2292 /* The non-globbing ones usually create things, hence we apply
2293 * them first */
2294 ORDERED_HASHMAP_FOREACH(a, items, iterator) {
2295 k = process_item_array(a);
2296 if (k < 0 && r == 0)
2297 r = k;
2298 }
2299
2300 /* The globbing ones usually alter things, hence we apply them
2301 * second. */
2302 ORDERED_HASHMAP_FOREACH(a, globs, iterator) {
2303 k = process_item_array(a);
2304 if (k < 0 && r == 0)
2305 r = k;
2306 }
2307
2308 finish:
2309 while ((a = ordered_hashmap_steal_first(items)))
2310 item_array_free(a);
2311
2312 while ((a = ordered_hashmap_steal_first(globs)))
2313 item_array_free(a);
2314
2315 ordered_hashmap_free(items);
2316 ordered_hashmap_free(globs);
2317
2318 free(arg_include_prefixes);
2319 free(arg_exclude_prefixes);
2320 free(arg_root);
2321
2322 set_free_free(unix_sockets);
2323
2324 mac_selinux_finish();
2325
2326 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
2327 }
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