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