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util: add generic calls for prefixing a root directory to a path
[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 if (r != -EEXIST)
1218 return log_error_errno(r, "Failed to create directory or subvolume \"%s\": %m", i->path);
1219
1220 if (stat(i->path, &st) < 0)
1221 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1222
1223 if (!S_ISDIR(st.st_mode)) {
1224 log_debug("\"%s\" already exists and is not a directory.", i->path);
1225 return 0;
1226 }
1227
1228 creation = CREATION_EXISTING;
1229 } else
1230 creation = CREATION_NORMAL;
1231 log_debug("%s directory \"%s\".", creation_mode_verb_to_string(creation), i->path);
1232
1233 r = path_set_perms(i, i->path);
1234 if (r < 0)
1235 return r;
1236
1237 break;
1238
1239 case CREATE_FIFO:
1240
1241 RUN_WITH_UMASK(0000) {
1242 mac_selinux_create_file_prepare(i->path, S_IFIFO);
1243 r = mkfifo(i->path, i->mode);
1244 mac_selinux_create_file_clear();
1245 }
1246
1247 if (r < 0) {
1248 if (errno != EEXIST)
1249 return log_error_errno(errno, "Failed to create fifo %s: %m", i->path);
1250
1251 if (stat(i->path, &st) < 0)
1252 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1253
1254 if (!S_ISFIFO(st.st_mode)) {
1255
1256 if (i->force) {
1257
1258 RUN_WITH_UMASK(0000) {
1259 mac_selinux_create_file_prepare(i->path, S_IFIFO);
1260 r = mkfifo_atomic(i->path, i->mode);
1261 mac_selinux_create_file_clear();
1262 }
1263
1264 if (r < 0)
1265 return log_error_errno(r, "Failed to create fifo %s: %m", i->path);
1266 creation = CREATION_FORCE;
1267 } else {
1268 log_debug("%s is not a fifo.", i->path);
1269 return 0;
1270 }
1271 } else
1272 creation = CREATION_EXISTING;
1273 } else
1274 creation = CREATION_NORMAL;
1275 log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation), i->path);
1276
1277 r = path_set_perms(i, i->path);
1278 if (r < 0)
1279 return r;
1280
1281 break;
1282 }
1283
1284 case CREATE_SYMLINK: {
1285 r = specifier_printf(i->argument, specifier_table, NULL, &resolved);
1286 if (r < 0)
1287 return log_error_errno(r, "Failed to substitute specifiers in symlink target %s: %m", i->argument);
1288
1289 mac_selinux_create_file_prepare(i->path, S_IFLNK);
1290 r = symlink(resolved, i->path);
1291 mac_selinux_create_file_clear();
1292
1293 if (r < 0) {
1294 _cleanup_free_ char *x = NULL;
1295
1296 if (errno != EEXIST)
1297 return log_error_errno(errno, "symlink(%s, %s) failed: %m", resolved, i->path);
1298
1299 r = readlink_malloc(i->path, &x);
1300 if (r < 0 || !streq(resolved, x)) {
1301
1302 if (i->force) {
1303 mac_selinux_create_file_prepare(i->path, S_IFLNK);
1304 r = symlink_atomic(resolved, i->path);
1305 mac_selinux_create_file_clear();
1306
1307 if (r < 0)
1308 return log_error_errno(r, "symlink(%s, %s) failed: %m", resolved, i->path);
1309 creation = CREATION_FORCE;
1310 } else {
1311 log_debug("\"%s\" is not a symlink or does not point to the correct path.", i->path);
1312 return 0;
1313 }
1314 } else
1315 creation = CREATION_EXISTING;
1316 } else
1317 creation = CREATION_NORMAL;
1318 log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation), i->path);
1319
1320 break;
1321 }
1322
1323 case CREATE_BLOCK_DEVICE:
1324 case CREATE_CHAR_DEVICE: {
1325 mode_t file_type;
1326
1327 if (have_effective_cap(CAP_MKNOD) == 0) {
1328 /* In a container we lack CAP_MKNOD. We
1329 shouldn't attempt to create the device node in
1330 that case to avoid noise, and we don't support
1331 virtualized devices in containers anyway. */
1332
1333 log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path);
1334 return 0;
1335 }
1336
1337 file_type = i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR;
1338
1339 RUN_WITH_UMASK(0000) {
1340 mac_selinux_create_file_prepare(i->path, file_type);
1341 r = mknod(i->path, i->mode | file_type, i->major_minor);
1342 mac_selinux_create_file_clear();
1343 }
1344
1345 if (r < 0) {
1346 if (errno == EPERM) {
1347 log_debug("We lack permissions, possibly because of cgroup configuration; "
1348 "skipping creation of device node %s.", i->path);
1349 return 0;
1350 }
1351
1352 if (errno != EEXIST)
1353 return log_error_errno(errno, "Failed to create device node %s: %m", i->path);
1354
1355 if (stat(i->path, &st) < 0)
1356 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1357
1358 if ((st.st_mode & S_IFMT) != file_type) {
1359
1360 if (i->force) {
1361
1362 RUN_WITH_UMASK(0000) {
1363 mac_selinux_create_file_prepare(i->path, file_type);
1364 r = mknod_atomic(i->path, i->mode | file_type, i->major_minor);
1365 mac_selinux_create_file_clear();
1366 }
1367
1368 if (r < 0)
1369 return log_error_errno(r, "Failed to create device node \"%s\": %m", i->path);
1370 creation = CREATION_FORCE;
1371 } else {
1372 log_debug("%s is not a device node.", i->path);
1373 return 0;
1374 }
1375 } else
1376 creation = CREATION_EXISTING;
1377 } else
1378 creation = CREATION_NORMAL;
1379 log_debug("%s %s device node \"%s\" %u:%u.",
1380 creation_mode_verb_to_string(creation),
1381 i->type == CREATE_BLOCK_DEVICE ? "block" : "char",
1382 i->path, major(i->mode), minor(i->mode));
1383
1384 r = path_set_perms(i, i->path);
1385 if (r < 0)
1386 return r;
1387
1388 break;
1389 }
1390
1391 case ADJUST_MODE:
1392 case RELABEL_PATH:
1393 r = glob_item(i, path_set_perms, false);
1394 if (r < 0)
1395 return r;
1396 break;
1397
1398 case RECURSIVE_RELABEL_PATH:
1399 r = glob_item(i, path_set_perms, true);
1400 if (r < 0)
1401 return r;
1402 break;
1403
1404 case SET_XATTR:
1405 r = glob_item(i, path_set_xattrs, false);
1406 if (r < 0)
1407 return r;
1408 break;
1409
1410 case RECURSIVE_SET_XATTR:
1411 r = glob_item(i, path_set_xattrs, true);
1412 if (r < 0)
1413 return r;
1414 break;
1415
1416 case SET_ACL:
1417 r = glob_item(i, path_set_acls, false);
1418 if (r < 0)
1419 return r;
1420 break;
1421
1422 case RECURSIVE_SET_ACL:
1423 r = glob_item(i, path_set_acls, true);
1424 if (r < 0)
1425 return r;
1426 break;
1427
1428 case SET_ATTRIBUTE:
1429 r = glob_item(i, path_set_attribute, false);
1430 if (r < 0)
1431 return r;
1432 break;
1433
1434 case RECURSIVE_SET_ATTRIBUTE:
1435 r = glob_item(i, path_set_attribute, true);
1436 if (r < 0)
1437 return r;
1438 break;
1439 }
1440
1441 return 0;
1442 }
1443
1444 static int remove_item_instance(Item *i, const char *instance) {
1445 int r;
1446
1447 assert(i);
1448
1449 switch (i->type) {
1450
1451 case REMOVE_PATH:
1452 if (remove(instance) < 0 && errno != ENOENT)
1453 return log_error_errno(errno, "rm(%s): %m", instance);
1454
1455 break;
1456
1457 case TRUNCATE_DIRECTORY:
1458 case RECURSIVE_REMOVE_PATH:
1459 /* FIXME: we probably should use dir_cleanup() here
1460 * instead of rm_rf() so that 'x' is honoured. */
1461 log_debug("rm -rf \"%s\"", instance);
1462 r = rm_rf(instance, (i->type == RECURSIVE_REMOVE_PATH ? REMOVE_ROOT : 0) | REMOVE_PHYSICAL);
1463 if (r < 0 && r != -ENOENT)
1464 return log_error_errno(r, "rm_rf(%s): %m", instance);
1465
1466 break;
1467
1468 default:
1469 assert_not_reached("wut?");
1470 }
1471
1472 return 0;
1473 }
1474
1475 static int remove_item(Item *i) {
1476 int r = 0;
1477
1478 assert(i);
1479
1480 log_debug("Running remove action for entry %c %s", (char) i->type, i->path);
1481
1482 switch (i->type) {
1483
1484 case CREATE_FILE:
1485 case TRUNCATE_FILE:
1486 case CREATE_DIRECTORY:
1487 case CREATE_SUBVOLUME:
1488 case CREATE_FIFO:
1489 case CREATE_SYMLINK:
1490 case CREATE_CHAR_DEVICE:
1491 case CREATE_BLOCK_DEVICE:
1492 case IGNORE_PATH:
1493 case IGNORE_DIRECTORY_PATH:
1494 case ADJUST_MODE:
1495 case RELABEL_PATH:
1496 case RECURSIVE_RELABEL_PATH:
1497 case WRITE_FILE:
1498 case COPY_FILES:
1499 case SET_XATTR:
1500 case RECURSIVE_SET_XATTR:
1501 case SET_ACL:
1502 case RECURSIVE_SET_ACL:
1503 case SET_ATTRIBUTE:
1504 case RECURSIVE_SET_ATTRIBUTE:
1505 break;
1506
1507 case REMOVE_PATH:
1508 case TRUNCATE_DIRECTORY:
1509 case RECURSIVE_REMOVE_PATH:
1510 r = glob_item(i, remove_item_instance, false);
1511 break;
1512 }
1513
1514 return r;
1515 }
1516
1517 static int clean_item_instance(Item *i, const char* instance) {
1518 _cleanup_closedir_ DIR *d = NULL;
1519 struct stat s, ps;
1520 bool mountpoint;
1521 usec_t cutoff, n;
1522 char timestamp[FORMAT_TIMESTAMP_MAX];
1523
1524 assert(i);
1525
1526 if (!i->age_set)
1527 return 0;
1528
1529 n = now(CLOCK_REALTIME);
1530 if (n < i->age)
1531 return 0;
1532
1533 cutoff = n - i->age;
1534
1535 d = opendir_nomod(instance);
1536 if (!d) {
1537 if (errno == ENOENT || errno == ENOTDIR) {
1538 log_debug_errno(errno, "Directory \"%s\": %m", instance);
1539 return 0;
1540 }
1541
1542 log_error_errno(errno, "Failed to open directory %s: %m", instance);
1543 return -errno;
1544 }
1545
1546 if (fstat(dirfd(d), &s) < 0)
1547 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1548
1549 if (!S_ISDIR(s.st_mode)) {
1550 log_error("%s is not a directory.", i->path);
1551 return -ENOTDIR;
1552 }
1553
1554 if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0)
1555 return log_error_errno(errno, "stat(%s/..) failed: %m", i->path);
1556
1557 mountpoint = s.st_dev != ps.st_dev ||
1558 (s.st_dev == ps.st_dev && s.st_ino == ps.st_ino);
1559
1560 log_debug("Cleanup threshold for %s \"%s\" is %s",
1561 mountpoint ? "mount point" : "directory",
1562 instance,
1563 format_timestamp_us(timestamp, sizeof(timestamp), cutoff));
1564
1565 return dir_cleanup(i, instance, d, &s, cutoff, s.st_dev, mountpoint,
1566 MAX_DEPTH, i->keep_first_level);
1567 }
1568
1569 static int clean_item(Item *i) {
1570 int r = 0;
1571
1572 assert(i);
1573
1574 log_debug("Running clean action for entry %c %s", (char) i->type, i->path);
1575
1576 switch (i->type) {
1577 case CREATE_DIRECTORY:
1578 case CREATE_SUBVOLUME:
1579 case TRUNCATE_DIRECTORY:
1580 case IGNORE_PATH:
1581 case COPY_FILES:
1582 clean_item_instance(i, i->path);
1583 break;
1584 case IGNORE_DIRECTORY_PATH:
1585 r = glob_item(i, clean_item_instance, false);
1586 break;
1587 default:
1588 break;
1589 }
1590
1591 return r;
1592 }
1593
1594 static int process_item_array(ItemArray *array);
1595
1596 static int process_item(Item *i) {
1597 int r, q, p, t = 0;
1598 _cleanup_free_ char *prefix = NULL;
1599
1600 assert(i);
1601
1602 if (i->done)
1603 return 0;
1604
1605 i->done = true;
1606
1607 prefix = malloc(strlen(i->path) + 1);
1608 if (!prefix)
1609 return log_oom();
1610
1611 PATH_FOREACH_PREFIX(prefix, i->path) {
1612 ItemArray *j;
1613
1614 j = ordered_hashmap_get(items, prefix);
1615 if (j) {
1616 int s;
1617
1618 s = process_item_array(j);
1619 if (s < 0 && t == 0)
1620 t = s;
1621 }
1622 }
1623
1624 r = arg_create ? create_item(i) : 0;
1625 q = arg_remove ? remove_item(i) : 0;
1626 p = arg_clean ? clean_item(i) : 0;
1627
1628 return t < 0 ? t :
1629 r < 0 ? r :
1630 q < 0 ? q :
1631 p;
1632 }
1633
1634 static int process_item_array(ItemArray *array) {
1635 unsigned n;
1636 int r = 0, k;
1637
1638 assert(array);
1639
1640 for (n = 0; n < array->count; n++) {
1641 k = process_item(array->items + n);
1642 if (k < 0 && r == 0)
1643 r = k;
1644 }
1645
1646 return r;
1647 }
1648
1649 static void item_free_contents(Item *i) {
1650 assert(i);
1651 free(i->path);
1652 free(i->argument);
1653 strv_free(i->xattrs);
1654
1655 #ifdef HAVE_ACL
1656 acl_free(i->acl_access);
1657 acl_free(i->acl_default);
1658 #endif
1659 }
1660
1661 static void item_array_free(ItemArray *a) {
1662 unsigned n;
1663
1664 if (!a)
1665 return;
1666
1667 for (n = 0; n < a->count; n++)
1668 item_free_contents(a->items + n);
1669 free(a->items);
1670 free(a);
1671 }
1672
1673 static int item_compare(const void *a, const void *b) {
1674 const Item *x = a, *y = b;
1675
1676 /* Make sure that the ownership taking item is put first, so
1677 * that we first create the node, and then can adjust it */
1678
1679 if (takes_ownership(x->type) && !takes_ownership(y->type))
1680 return -1;
1681 if (!takes_ownership(x->type) && takes_ownership(y->type))
1682 return 1;
1683
1684 return (int) x->type - (int) y->type;
1685 }
1686
1687 static bool item_compatible(Item *a, Item *b) {
1688 assert(a);
1689 assert(b);
1690 assert(streq(a->path, b->path));
1691
1692 if (takes_ownership(a->type) && takes_ownership(b->type))
1693 /* check if the items are the same */
1694 return streq_ptr(a->argument, b->argument) &&
1695
1696 a->uid_set == b->uid_set &&
1697 a->uid == b->uid &&
1698
1699 a->gid_set == b->gid_set &&
1700 a->gid == b->gid &&
1701
1702 a->mode_set == b->mode_set &&
1703 a->mode == b->mode &&
1704
1705 a->age_set == b->age_set &&
1706 a->age == b->age &&
1707
1708 a->mask_perms == b->mask_perms &&
1709
1710 a->keep_first_level == b->keep_first_level &&
1711
1712 a->major_minor == b->major_minor;
1713
1714 return true;
1715 }
1716
1717 static bool should_include_path(const char *path) {
1718 char **prefix;
1719
1720 STRV_FOREACH(prefix, arg_exclude_prefixes)
1721 if (path_startswith(path, *prefix)) {
1722 log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.",
1723 path, *prefix);
1724 return false;
1725 }
1726
1727 STRV_FOREACH(prefix, arg_include_prefixes)
1728 if (path_startswith(path, *prefix)) {
1729 log_debug("Entry \"%s\" matches include prefix \"%s\".", path, *prefix);
1730 return true;
1731 }
1732
1733 /* no matches, so we should include this path only if we
1734 * have no whitelist at all */
1735 if (strv_length(arg_include_prefixes) == 0)
1736 return true;
1737
1738 log_debug("Entry \"%s\" does not match any include prefix, skipping.", path);
1739 return false;
1740 }
1741
1742 static int parse_line(const char *fname, unsigned line, const char *buffer) {
1743
1744 _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL;
1745 _cleanup_(item_free_contents) Item i = {};
1746 ItemArray *existing;
1747 OrderedHashmap *h;
1748 int r, pos;
1749 bool force = false, boot = false;
1750
1751 assert(fname);
1752 assert(line >= 1);
1753 assert(buffer);
1754
1755 r = unquote_many_words(
1756 &buffer,
1757 0,
1758 &action,
1759 &path,
1760 &mode,
1761 &user,
1762 &group,
1763 &age,
1764 NULL);
1765 if (r < 0)
1766 return log_error_errno(r, "[%s:%u] Failed to parse line: %m", fname, line);
1767 else if (r < 2) {
1768 log_error("[%s:%u] Syntax error.", fname, line);
1769 return -EIO;
1770 }
1771
1772 if (!isempty(buffer) && !streq(buffer, "-")) {
1773 i.argument = strdup(buffer);
1774 if (!i.argument)
1775 return log_oom();
1776 }
1777
1778 if (isempty(action)) {
1779 log_error("[%s:%u] Command too short '%s'.", fname, line, action);
1780 return -EINVAL;
1781 }
1782
1783 for (pos = 1; action[pos]; pos++) {
1784 if (action[pos] == '!' && !boot)
1785 boot = true;
1786 else if (action[pos] == '+' && !force)
1787 force = true;
1788 else {
1789 log_error("[%s:%u] Unknown modifiers in command '%s'",
1790 fname, line, action);
1791 return -EINVAL;
1792 }
1793 }
1794
1795 if (boot && !arg_boot) {
1796 log_debug("Ignoring entry %s \"%s\" because --boot is not specified.",
1797 action, path);
1798 return 0;
1799 }
1800
1801 i.type = action[0];
1802 i.force = force;
1803
1804 r = specifier_printf(path, specifier_table, NULL, &i.path);
1805 if (r < 0) {
1806 log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, path);
1807 return r;
1808 }
1809
1810 switch (i.type) {
1811
1812 case CREATE_DIRECTORY:
1813 case CREATE_SUBVOLUME:
1814 case TRUNCATE_DIRECTORY:
1815 case CREATE_FIFO:
1816 case IGNORE_PATH:
1817 case IGNORE_DIRECTORY_PATH:
1818 case REMOVE_PATH:
1819 case RECURSIVE_REMOVE_PATH:
1820 case ADJUST_MODE:
1821 case RELABEL_PATH:
1822 case RECURSIVE_RELABEL_PATH:
1823 if (i.argument)
1824 log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname, line, i.type);
1825
1826 break;
1827
1828 case CREATE_FILE:
1829 case TRUNCATE_FILE:
1830 break;
1831
1832 case CREATE_SYMLINK:
1833 if (!i.argument) {
1834 i.argument = strappend("/usr/share/factory/", i.path);
1835 if (!i.argument)
1836 return log_oom();
1837 }
1838 break;
1839
1840 case WRITE_FILE:
1841 if (!i.argument) {
1842 log_error("[%s:%u] Write file requires argument.", fname, line);
1843 return -EBADMSG;
1844 }
1845 break;
1846
1847 case COPY_FILES:
1848 if (!i.argument) {
1849 i.argument = strappend("/usr/share/factory/", i.path);
1850 if (!i.argument)
1851 return log_oom();
1852 } else if (!path_is_absolute(i.argument)) {
1853 log_error("[%s:%u] Source path is not absolute.", fname, line);
1854 return -EBADMSG;
1855 }
1856
1857 path_kill_slashes(i.argument);
1858 break;
1859
1860 case CREATE_CHAR_DEVICE:
1861 case CREATE_BLOCK_DEVICE: {
1862 unsigned major, minor;
1863
1864 if (!i.argument) {
1865 log_error("[%s:%u] Device file requires argument.", fname, line);
1866 return -EBADMSG;
1867 }
1868
1869 if (sscanf(i.argument, "%u:%u", &major, &minor) != 2) {
1870 log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname, line, i.argument);
1871 return -EBADMSG;
1872 }
1873
1874 i.major_minor = makedev(major, minor);
1875 break;
1876 }
1877
1878 case SET_XATTR:
1879 case RECURSIVE_SET_XATTR:
1880 if (!i.argument) {
1881 log_error("[%s:%u] Set extended attribute requires argument.", fname, line);
1882 return -EBADMSG;
1883 }
1884 r = parse_xattrs_from_arg(&i);
1885 if (r < 0)
1886 return r;
1887 break;
1888
1889 case SET_ACL:
1890 case RECURSIVE_SET_ACL:
1891 if (!i.argument) {
1892 log_error("[%s:%u] Set ACLs requires argument.", fname, line);
1893 return -EBADMSG;
1894 }
1895 r = parse_acls_from_arg(&i);
1896 if (r < 0)
1897 return r;
1898 break;
1899
1900 case SET_ATTRIBUTE:
1901 case RECURSIVE_SET_ATTRIBUTE:
1902 if (!i.argument) {
1903 log_error("[%s:%u] Set file attribute requires argument.", fname, line);
1904 return -EBADMSG;
1905 }
1906 r = parse_attribute_from_arg(&i);
1907 if (r < 0)
1908 return r;
1909 break;
1910
1911 default:
1912 log_error("[%s:%u] Unknown command type '%c'.", fname, line, (char) i.type);
1913 return -EBADMSG;
1914 }
1915
1916 if (!path_is_absolute(i.path)) {
1917 log_error("[%s:%u] Path '%s' not absolute.", fname, line, i.path);
1918 return -EBADMSG;
1919 }
1920
1921 path_kill_slashes(i.path);
1922
1923 if (!should_include_path(i.path))
1924 return 0;
1925
1926 if (arg_root) {
1927 char *p;
1928
1929 p = prefix_root(arg_root, i.path);
1930 if (!p)
1931 return log_oom();
1932
1933 free(i.path);
1934 i.path = p;
1935 }
1936
1937 if (!isempty(user) && !streq(user, "-")) {
1938 const char *u = user;
1939
1940 r = get_user_creds(&u, &i.uid, NULL, NULL, NULL);
1941 if (r < 0) {
1942 log_error("[%s:%u] Unknown user '%s'.", fname, line, user);
1943 return r;
1944 }
1945
1946 i.uid_set = true;
1947 }
1948
1949 if (!isempty(group) && !streq(group, "-")) {
1950 const char *g = group;
1951
1952 r = get_group_creds(&g, &i.gid);
1953 if (r < 0) {
1954 log_error("[%s:%u] Unknown group '%s'.", fname, line, group);
1955 return r;
1956 }
1957
1958 i.gid_set = true;
1959 }
1960
1961 if (!isempty(mode) && !streq(mode, "-")) {
1962 const char *mm = mode;
1963 unsigned m;
1964
1965 if (*mm == '~') {
1966 i.mask_perms = true;
1967 mm++;
1968 }
1969
1970 if (parse_mode(mm, &m) < 0) {
1971 log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode);
1972 return -EBADMSG;
1973 }
1974
1975 i.mode = m;
1976 i.mode_set = true;
1977 } else
1978 i.mode = IN_SET(i.type, CREATE_DIRECTORY, CREATE_SUBVOLUME, TRUNCATE_DIRECTORY)
1979 ? 0755 : 0644;
1980
1981 if (!isempty(age) && !streq(age, "-")) {
1982 const char *a = age;
1983
1984 if (*a == '~') {
1985 i.keep_first_level = true;
1986 a++;
1987 }
1988
1989 if (parse_sec(a, &i.age) < 0) {
1990 log_error("[%s:%u] Invalid age '%s'.", fname, line, age);
1991 return -EBADMSG;
1992 }
1993
1994 i.age_set = true;
1995 }
1996
1997 h = needs_glob(i.type) ? globs : items;
1998
1999 existing = ordered_hashmap_get(h, i.path);
2000 if (existing) {
2001 unsigned n;
2002
2003 for (n = 0; n < existing->count; n++) {
2004 if (!item_compatible(existing->items + n, &i)) {
2005 log_warning("[%s:%u] Duplicate line for path \"%s\", ignoring.",
2006 fname, line, i.path);
2007 return 0;
2008 }
2009 }
2010 } else {
2011 existing = new0(ItemArray, 1);
2012 r = ordered_hashmap_put(h, i.path, existing);
2013 if (r < 0)
2014 return log_oom();
2015 }
2016
2017 if (!GREEDY_REALLOC(existing->items, existing->size, existing->count + 1))
2018 return log_oom();
2019
2020 memcpy(existing->items + existing->count++, &i, sizeof(i));
2021
2022 /* Sort item array, to enforce stable ordering of application */
2023 qsort_safe(existing->items, existing->count, sizeof(Item), item_compare);
2024
2025 zero(i);
2026 return 0;
2027 }
2028
2029 static void help(void) {
2030 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
2031 "Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
2032 " -h --help Show this help\n"
2033 " --version Show package version\n"
2034 " --create Create marked files/directories\n"
2035 " --clean Clean up marked directories\n"
2036 " --remove Remove marked files/directories\n"
2037 " --boot Execute actions only safe at boot\n"
2038 " --prefix=PATH Only apply rules with the specified prefix\n"
2039 " --exclude-prefix=PATH Ignore rules with the specified prefix\n"
2040 " --root=PATH Operate on an alternate filesystem root\n",
2041 program_invocation_short_name);
2042 }
2043
2044 static int parse_argv(int argc, char *argv[]) {
2045
2046 enum {
2047 ARG_VERSION = 0x100,
2048 ARG_CREATE,
2049 ARG_CLEAN,
2050 ARG_REMOVE,
2051 ARG_BOOT,
2052 ARG_PREFIX,
2053 ARG_EXCLUDE_PREFIX,
2054 ARG_ROOT,
2055 };
2056
2057 static const struct option options[] = {
2058 { "help", no_argument, NULL, 'h' },
2059 { "version", no_argument, NULL, ARG_VERSION },
2060 { "create", no_argument, NULL, ARG_CREATE },
2061 { "clean", no_argument, NULL, ARG_CLEAN },
2062 { "remove", no_argument, NULL, ARG_REMOVE },
2063 { "boot", no_argument, NULL, ARG_BOOT },
2064 { "prefix", required_argument, NULL, ARG_PREFIX },
2065 { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX },
2066 { "root", required_argument, NULL, ARG_ROOT },
2067 {}
2068 };
2069
2070 int c;
2071
2072 assert(argc >= 0);
2073 assert(argv);
2074
2075 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
2076
2077 switch (c) {
2078
2079 case 'h':
2080 help();
2081 return 0;
2082
2083 case ARG_VERSION:
2084 puts(PACKAGE_STRING);
2085 puts(SYSTEMD_FEATURES);
2086 return 0;
2087
2088 case ARG_CREATE:
2089 arg_create = true;
2090 break;
2091
2092 case ARG_CLEAN:
2093 arg_clean = true;
2094 break;
2095
2096 case ARG_REMOVE:
2097 arg_remove = true;
2098 break;
2099
2100 case ARG_BOOT:
2101 arg_boot = true;
2102 break;
2103
2104 case ARG_PREFIX:
2105 if (strv_push(&arg_include_prefixes, optarg) < 0)
2106 return log_oom();
2107 break;
2108
2109 case ARG_EXCLUDE_PREFIX:
2110 if (strv_push(&arg_exclude_prefixes, optarg) < 0)
2111 return log_oom();
2112 break;
2113
2114 case ARG_ROOT:
2115 free(arg_root);
2116 arg_root = path_make_absolute_cwd(optarg);
2117 if (!arg_root)
2118 return log_oom();
2119
2120 path_kill_slashes(arg_root);
2121 break;
2122
2123 case '?':
2124 return -EINVAL;
2125
2126 default:
2127 assert_not_reached("Unhandled option");
2128 }
2129
2130 if (!arg_clean && !arg_create && !arg_remove) {
2131 log_error("You need to specify at least one of --clean, --create or --remove.");
2132 return -EINVAL;
2133 }
2134
2135 return 1;
2136 }
2137
2138 static int read_config_file(const char *fn, bool ignore_enoent) {
2139 _cleanup_fclose_ FILE *f = NULL;
2140 char line[LINE_MAX];
2141 Iterator iterator;
2142 unsigned v = 0;
2143 Item *i;
2144 int r;
2145
2146 assert(fn);
2147
2148 r = search_and_fopen_nulstr(fn, "re", arg_root, conf_file_dirs, &f);
2149 if (r < 0) {
2150 if (ignore_enoent && r == -ENOENT) {
2151 log_debug_errno(r, "Failed to open \"%s\": %m", fn);
2152 return 0;
2153 }
2154
2155 return log_error_errno(r, "Failed to open '%s', ignoring: %m", fn);
2156 }
2157 log_debug("Reading config file \"%s\".", fn);
2158
2159 FOREACH_LINE(line, f, break) {
2160 char *l;
2161 int k;
2162
2163 v++;
2164
2165 l = strstrip(line);
2166 if (*l == '#' || *l == 0)
2167 continue;
2168
2169 k = parse_line(fn, v, l);
2170 if (k < 0 && r == 0)
2171 r = k;
2172 }
2173
2174 /* we have to determine age parameter for each entry of type X */
2175 ORDERED_HASHMAP_FOREACH(i, globs, iterator) {
2176 Iterator iter;
2177 Item *j, *candidate_item = NULL;
2178
2179 if (i->type != IGNORE_DIRECTORY_PATH)
2180 continue;
2181
2182 ORDERED_HASHMAP_FOREACH(j, items, iter) {
2183 if (j->type != CREATE_DIRECTORY && j->type != TRUNCATE_DIRECTORY && j->type != CREATE_SUBVOLUME)
2184 continue;
2185
2186 if (path_equal(j->path, i->path)) {
2187 candidate_item = j;
2188 break;
2189 }
2190
2191 if ((!candidate_item && path_startswith(i->path, j->path)) ||
2192 (candidate_item && path_startswith(j->path, candidate_item->path) && (fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0)))
2193 candidate_item = j;
2194 }
2195
2196 if (candidate_item && candidate_item->age_set) {
2197 i->age = candidate_item->age;
2198 i->age_set = true;
2199 }
2200 }
2201
2202 if (ferror(f)) {
2203 log_error_errno(errno, "Failed to read from file %s: %m", fn);
2204 if (r == 0)
2205 r = -EIO;
2206 }
2207
2208 return r;
2209 }
2210
2211 int main(int argc, char *argv[]) {
2212 int r, k;
2213 ItemArray *a;
2214 Iterator iterator;
2215
2216 r = parse_argv(argc, argv);
2217 if (r <= 0)
2218 goto finish;
2219
2220 log_set_target(LOG_TARGET_AUTO);
2221 log_parse_environment();
2222 log_open();
2223
2224 umask(0022);
2225
2226 mac_selinux_init(NULL);
2227
2228 items = ordered_hashmap_new(&string_hash_ops);
2229 globs = ordered_hashmap_new(&string_hash_ops);
2230
2231 if (!items || !globs) {
2232 r = log_oom();
2233 goto finish;
2234 }
2235
2236 r = 0;
2237
2238 if (optind < argc) {
2239 int j;
2240
2241 for (j = optind; j < argc; j++) {
2242 k = read_config_file(argv[j], false);
2243 if (k < 0 && r == 0)
2244 r = k;
2245 }
2246
2247 } else {
2248 _cleanup_strv_free_ char **files = NULL;
2249 char **f;
2250
2251 r = conf_files_list_nulstr(&files, ".conf", arg_root, conf_file_dirs);
2252 if (r < 0) {
2253 log_error_errno(r, "Failed to enumerate tmpfiles.d files: %m");
2254 goto finish;
2255 }
2256
2257 STRV_FOREACH(f, files) {
2258 k = read_config_file(*f, true);
2259 if (k < 0 && r == 0)
2260 r = k;
2261 }
2262 }
2263
2264 /* The non-globbing ones usually create things, hence we apply
2265 * them first */
2266 ORDERED_HASHMAP_FOREACH(a, items, iterator) {
2267 k = process_item_array(a);
2268 if (k < 0 && r == 0)
2269 r = k;
2270 }
2271
2272 /* The globbing ones usually alter things, hence we apply them
2273 * second. */
2274 ORDERED_HASHMAP_FOREACH(a, globs, iterator) {
2275 k = process_item_array(a);
2276 if (k < 0 && r == 0)
2277 r = k;
2278 }
2279
2280 finish:
2281 while ((a = ordered_hashmap_steal_first(items)))
2282 item_array_free(a);
2283
2284 while ((a = ordered_hashmap_steal_first(globs)))
2285 item_array_free(a);
2286
2287 ordered_hashmap_free(items);
2288 ordered_hashmap_free(globs);
2289
2290 free(arg_include_prefixes);
2291 free(arg_exclude_prefixes);
2292 free(arg_root);
2293
2294 set_free_free(unix_sockets);
2295
2296 mac_selinux_finish();
2297
2298 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
2299 }
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