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Merge pull request #4536 from poettering/seccomp-namespaces
[thirdparty/systemd.git] / src / tmpfiles / tmpfiles.c
1 /***
2 This file is part of systemd.
3
4 Copyright 2010 Lennart Poettering, Kay Sievers
5 Copyright 2015 Zbigniew Jędrzejewski-Szmek
6
7 systemd is free software; you can redistribute it and/or modify it
8 under the terms of the GNU Lesser General Public License as published by
9 the Free Software Foundation; either version 2.1 of the License, or
10 (at your option) any later version.
11
12 systemd is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
16
17 You should have received a copy of the GNU Lesser General Public License
18 along with systemd; If not, see <http://www.gnu.org/licenses/>.
19 ***/
20
21 #include <dirent.h>
22 #include <errno.h>
23 #include <fcntl.h>
24 #include <fnmatch.h>
25 #include <getopt.h>
26 #include <glob.h>
27 #include <limits.h>
28 #include <linux/fs.h>
29 #include <stdbool.h>
30 #include <stddef.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34 #include <sys/stat.h>
35 #include <sys/xattr.h>
36 #include <time.h>
37 #include <unistd.h>
38
39 #include "acl-util.h"
40 #include "alloc-util.h"
41 #include "btrfs-util.h"
42 #include "capability-util.h"
43 #include "chattr-util.h"
44 #include "conf-files.h"
45 #include "copy.h"
46 #include "def.h"
47 #include "escape.h"
48 #include "fd-util.h"
49 #include "fileio.h"
50 #include "format-util.h"
51 #include "fs-util.h"
52 #include "glob-util.h"
53 #include "io-util.h"
54 #include "label.h"
55 #include "log.h"
56 #include "macro.h"
57 #include "missing.h"
58 #include "mkdir.h"
59 #include "mount-util.h"
60 #include "parse-util.h"
61 #include "path-util.h"
62 #include "rm-rf.h"
63 #include "selinux-util.h"
64 #include "set.h"
65 #include "specifier.h"
66 #include "stat-util.h"
67 #include "stdio-util.h"
68 #include "string-table.h"
69 #include "string-util.h"
70 #include "strv.h"
71 #include "umask-util.h"
72 #include "user-util.h"
73 #include "util.h"
74
75 /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates
76 * them in the file system. This is intended to be used to create
77 * properly owned directories beneath /tmp, /var/tmp, /run, which are
78 * volatile and hence need to be recreated on bootup. */
79
80 typedef enum ItemType {
81 /* These ones take file names */
82 CREATE_FILE = 'f',
83 TRUNCATE_FILE = 'F',
84 CREATE_DIRECTORY = 'd',
85 TRUNCATE_DIRECTORY = 'D',
86 CREATE_SUBVOLUME = 'v',
87 CREATE_SUBVOLUME_INHERIT_QUOTA = 'q',
88 CREATE_SUBVOLUME_NEW_QUOTA = 'Q',
89 CREATE_FIFO = 'p',
90 CREATE_SYMLINK = 'L',
91 CREATE_CHAR_DEVICE = 'c',
92 CREATE_BLOCK_DEVICE = 'b',
93 COPY_FILES = 'C',
94
95 /* These ones take globs */
96 WRITE_FILE = 'w',
97 EMPTY_DIRECTORY = 'e',
98 SET_XATTR = 't',
99 RECURSIVE_SET_XATTR = 'T',
100 SET_ACL = 'a',
101 RECURSIVE_SET_ACL = 'A',
102 SET_ATTRIBUTE = 'h',
103 RECURSIVE_SET_ATTRIBUTE = 'H',
104 IGNORE_PATH = 'x',
105 IGNORE_DIRECTORY_PATH = 'X',
106 REMOVE_PATH = 'r',
107 RECURSIVE_REMOVE_PATH = 'R',
108 RELABEL_PATH = 'z',
109 RECURSIVE_RELABEL_PATH = 'Z',
110 ADJUST_MODE = 'm', /* legacy, 'z' is identical to this */
111 } ItemType;
112
113 typedef struct Item {
114 ItemType type;
115
116 char *path;
117 char *argument;
118 char **xattrs;
119 #ifdef HAVE_ACL
120 acl_t acl_access;
121 acl_t acl_default;
122 #endif
123 uid_t uid;
124 gid_t gid;
125 mode_t mode;
126 usec_t age;
127
128 dev_t major_minor;
129 unsigned attribute_value;
130 unsigned attribute_mask;
131
132 bool uid_set:1;
133 bool gid_set:1;
134 bool mode_set:1;
135 bool age_set:1;
136 bool mask_perms:1;
137 bool attribute_set:1;
138
139 bool keep_first_level:1;
140
141 bool force:1;
142
143 bool done:1;
144 } Item;
145
146 typedef struct ItemArray {
147 Item *items;
148 size_t count;
149 size_t size;
150 } ItemArray;
151
152 static bool arg_create = false;
153 static bool arg_clean = false;
154 static bool arg_remove = false;
155 static bool arg_boot = false;
156
157 static char **arg_include_prefixes = NULL;
158 static char **arg_exclude_prefixes = NULL;
159 static char *arg_root = NULL;
160
161 static const char conf_file_dirs[] = CONF_PATHS_NULSTR("tmpfiles.d");
162
163 #define MAX_DEPTH 256
164
165 static OrderedHashmap *items = NULL, *globs = NULL;
166 static Set *unix_sockets = NULL;
167
168 static const Specifier specifier_table[] = {
169 { 'm', specifier_machine_id, NULL },
170 { 'b', specifier_boot_id, NULL },
171 { 'H', specifier_host_name, NULL },
172 { 'v', specifier_kernel_release, NULL },
173 {}
174 };
175
176 static bool needs_glob(ItemType t) {
177 return IN_SET(t,
178 WRITE_FILE,
179 IGNORE_PATH,
180 IGNORE_DIRECTORY_PATH,
181 REMOVE_PATH,
182 RECURSIVE_REMOVE_PATH,
183 EMPTY_DIRECTORY,
184 ADJUST_MODE,
185 RELABEL_PATH,
186 RECURSIVE_RELABEL_PATH,
187 SET_XATTR,
188 RECURSIVE_SET_XATTR,
189 SET_ACL,
190 RECURSIVE_SET_ACL,
191 SET_ATTRIBUTE,
192 RECURSIVE_SET_ATTRIBUTE);
193 }
194
195 static bool takes_ownership(ItemType t) {
196 return IN_SET(t,
197 CREATE_FILE,
198 TRUNCATE_FILE,
199 CREATE_DIRECTORY,
200 EMPTY_DIRECTORY,
201 TRUNCATE_DIRECTORY,
202 CREATE_SUBVOLUME,
203 CREATE_SUBVOLUME_INHERIT_QUOTA,
204 CREATE_SUBVOLUME_NEW_QUOTA,
205 CREATE_FIFO,
206 CREATE_SYMLINK,
207 CREATE_CHAR_DEVICE,
208 CREATE_BLOCK_DEVICE,
209 COPY_FILES,
210 WRITE_FILE,
211 IGNORE_PATH,
212 IGNORE_DIRECTORY_PATH,
213 REMOVE_PATH,
214 RECURSIVE_REMOVE_PATH);
215 }
216
217 static struct Item* find_glob(OrderedHashmap *h, const char *match) {
218 ItemArray *j;
219 Iterator i;
220
221 ORDERED_HASHMAP_FOREACH(j, h, i) {
222 unsigned n;
223
224 for (n = 0; n < j->count; n++) {
225 Item *item = j->items + n;
226
227 if (fnmatch(item->path, match, FNM_PATHNAME|FNM_PERIOD) == 0)
228 return item;
229 }
230 }
231
232 return NULL;
233 }
234
235 static void load_unix_sockets(void) {
236 _cleanup_fclose_ FILE *f = NULL;
237 char line[LINE_MAX];
238
239 if (unix_sockets)
240 return;
241
242 /* We maintain a cache of the sockets we found in
243 * /proc/net/unix to speed things up a little. */
244
245 unix_sockets = set_new(&string_hash_ops);
246 if (!unix_sockets)
247 return;
248
249 f = fopen("/proc/net/unix", "re");
250 if (!f)
251 return;
252
253 /* Skip header */
254 if (!fgets(line, sizeof(line), f))
255 goto fail;
256
257 for (;;) {
258 char *p, *s;
259 int k;
260
261 if (!fgets(line, sizeof(line), f))
262 break;
263
264 truncate_nl(line);
265
266 p = strchr(line, ':');
267 if (!p)
268 continue;
269
270 if (strlen(p) < 37)
271 continue;
272
273 p += 37;
274 p += strspn(p, WHITESPACE);
275 p += strcspn(p, WHITESPACE); /* skip one more word */
276 p += strspn(p, WHITESPACE);
277
278 if (*p != '/')
279 continue;
280
281 s = strdup(p);
282 if (!s)
283 goto fail;
284
285 path_kill_slashes(s);
286
287 k = set_consume(unix_sockets, s);
288 if (k < 0 && k != -EEXIST)
289 goto fail;
290 }
291
292 return;
293
294 fail:
295 set_free_free(unix_sockets);
296 unix_sockets = NULL;
297 }
298
299 static bool unix_socket_alive(const char *fn) {
300 assert(fn);
301
302 load_unix_sockets();
303
304 if (unix_sockets)
305 return !!set_get(unix_sockets, (char*) fn);
306
307 /* We don't know, so assume yes */
308 return true;
309 }
310
311 static int dir_is_mount_point(DIR *d, const char *subdir) {
312
313 union file_handle_union h = FILE_HANDLE_INIT;
314 int mount_id_parent, mount_id;
315 int r_p, r;
316
317 r_p = name_to_handle_at(dirfd(d), ".", &h.handle, &mount_id_parent, 0);
318 if (r_p < 0)
319 r_p = -errno;
320
321 h.handle.handle_bytes = MAX_HANDLE_SZ;
322 r = name_to_handle_at(dirfd(d), subdir, &h.handle, &mount_id, 0);
323 if (r < 0)
324 r = -errno;
325
326 /* got no handle; make no assumptions, return error */
327 if (r_p < 0 && r < 0)
328 return r_p;
329
330 /* got both handles; if they differ, it is a mount point */
331 if (r_p >= 0 && r >= 0)
332 return mount_id_parent != mount_id;
333
334 /* got only one handle; assume different mount points if one
335 * of both queries was not supported by the filesystem */
336 if (r_p == -ENOSYS || r_p == -EOPNOTSUPP || r == -ENOSYS || r == -EOPNOTSUPP)
337 return true;
338
339 /* return error */
340 if (r_p < 0)
341 return r_p;
342 return r;
343 }
344
345 static DIR* xopendirat_nomod(int dirfd, const char *path) {
346 DIR *dir;
347
348 dir = xopendirat(dirfd, path, O_NOFOLLOW|O_NOATIME);
349 if (dir)
350 return dir;
351
352 log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path);
353 if (errno != EPERM)
354 return NULL;
355
356 dir = xopendirat(dirfd, path, O_NOFOLLOW);
357 if (!dir)
358 log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path);
359
360 return dir;
361 }
362
363 static DIR* opendir_nomod(const char *path) {
364 return xopendirat_nomod(AT_FDCWD, path);
365 }
366
367 static int dir_cleanup(
368 Item *i,
369 const char *p,
370 DIR *d,
371 const struct stat *ds,
372 usec_t cutoff,
373 dev_t rootdev,
374 bool mountpoint,
375 int maxdepth,
376 bool keep_this_level) {
377
378 struct dirent *dent;
379 struct timespec times[2];
380 bool deleted = false;
381 int r = 0;
382
383 while ((dent = readdir(d))) {
384 struct stat s;
385 usec_t age;
386 _cleanup_free_ char *sub_path = NULL;
387
388 if (STR_IN_SET(dent->d_name, ".", ".."))
389 continue;
390
391 if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) {
392 if (errno == ENOENT)
393 continue;
394
395 /* FUSE, NFS mounts, SELinux might return EACCES */
396 if (errno == EACCES)
397 log_debug_errno(errno, "stat(%s/%s) failed: %m", p, dent->d_name);
398 else
399 log_error_errno(errno, "stat(%s/%s) failed: %m", p, dent->d_name);
400 r = -errno;
401 continue;
402 }
403
404 /* Stay on the same filesystem */
405 if (s.st_dev != rootdev) {
406 log_debug("Ignoring \"%s/%s\": different filesystem.", p, dent->d_name);
407 continue;
408 }
409
410 /* Try to detect bind mounts of the same filesystem instance; they
411 * do not differ in device major/minors. This type of query is not
412 * supported on all kernels or filesystem types though. */
413 if (S_ISDIR(s.st_mode) && dir_is_mount_point(d, dent->d_name) > 0) {
414 log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.",
415 p, dent->d_name);
416 continue;
417 }
418
419 /* Do not delete read-only files owned by root */
420 if (s.st_uid == 0 && !(s.st_mode & S_IWUSR)) {
421 log_debug("Ignoring \"%s/%s\": read-only and owner by root.", p, dent->d_name);
422 continue;
423 }
424
425 sub_path = strjoin(p, "/", dent->d_name);
426 if (!sub_path) {
427 r = log_oom();
428 goto finish;
429 }
430
431 /* Is there an item configured for this path? */
432 if (ordered_hashmap_get(items, sub_path)) {
433 log_debug("Ignoring \"%s\": a separate entry exists.", sub_path);
434 continue;
435 }
436
437 if (find_glob(globs, sub_path)) {
438 log_debug("Ignoring \"%s\": a separate glob exists.", sub_path);
439 continue;
440 }
441
442 if (S_ISDIR(s.st_mode)) {
443
444 if (mountpoint &&
445 streq(dent->d_name, "lost+found") &&
446 s.st_uid == 0) {
447 log_debug("Ignoring \"%s\".", sub_path);
448 continue;
449 }
450
451 if (maxdepth <= 0)
452 log_warning("Reached max depth on \"%s\".", sub_path);
453 else {
454 _cleanup_closedir_ DIR *sub_dir;
455 int q;
456
457 sub_dir = xopendirat_nomod(dirfd(d), dent->d_name);
458 if (!sub_dir) {
459 if (errno != ENOENT)
460 r = log_error_errno(errno, "opendir(%s) failed: %m", sub_path);
461
462 continue;
463 }
464
465 q = dir_cleanup(i, sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1, false);
466 if (q < 0)
467 r = q;
468 }
469
470 /* Note: if you are wondering why we don't
471 * support the sticky bit for excluding
472 * directories from cleaning like we do it for
473 * other file system objects: well, the sticky
474 * bit already has a meaning for directories,
475 * so we don't want to overload that. */
476
477 if (keep_this_level) {
478 log_debug("Keeping \"%s\".", sub_path);
479 continue;
480 }
481
482 /* Ignore ctime, we change it when deleting */
483 age = timespec_load(&s.st_mtim);
484 if (age >= cutoff) {
485 char a[FORMAT_TIMESTAMP_MAX];
486 /* Follows spelling in stat(1). */
487 log_debug("Directory \"%s\": modify time %s is too new.",
488 sub_path,
489 format_timestamp_us(a, sizeof(a), age));
490 continue;
491 }
492
493 age = timespec_load(&s.st_atim);
494 if (age >= cutoff) {
495 char a[FORMAT_TIMESTAMP_MAX];
496 log_debug("Directory \"%s\": access time %s is too new.",
497 sub_path,
498 format_timestamp_us(a, sizeof(a), age));
499 continue;
500 }
501
502 log_debug("Removing directory \"%s\".", sub_path);
503 if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0)
504 if (errno != ENOENT && errno != ENOTEMPTY) {
505 log_error_errno(errno, "rmdir(%s): %m", sub_path);
506 r = -errno;
507 }
508
509 } else {
510 /* Skip files for which the sticky bit is
511 * set. These are semantics we define, and are
512 * unknown elsewhere. See XDG_RUNTIME_DIR
513 * specification for details. */
514 if (s.st_mode & S_ISVTX) {
515 log_debug("Skipping \"%s\": sticky bit set.", sub_path);
516 continue;
517 }
518
519 if (mountpoint && S_ISREG(s.st_mode))
520 if (s.st_uid == 0 && STR_IN_SET(dent->d_name,
521 ".journal",
522 "aquota.user",
523 "aquota.group")) {
524 log_debug("Skipping \"%s\".", sub_path);
525 continue;
526 }
527
528 /* Ignore sockets that are listed in /proc/net/unix */
529 if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path)) {
530 log_debug("Skipping \"%s\": live socket.", sub_path);
531 continue;
532 }
533
534 /* Ignore device nodes */
535 if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) {
536 log_debug("Skipping \"%s\": a device.", sub_path);
537 continue;
538 }
539
540 /* Keep files on this level around if this is
541 * requested */
542 if (keep_this_level) {
543 log_debug("Keeping \"%s\".", sub_path);
544 continue;
545 }
546
547 age = timespec_load(&s.st_mtim);
548 if (age >= cutoff) {
549 char a[FORMAT_TIMESTAMP_MAX];
550 /* Follows spelling in stat(1). */
551 log_debug("File \"%s\": modify time %s is too new.",
552 sub_path,
553 format_timestamp_us(a, sizeof(a), age));
554 continue;
555 }
556
557 age = timespec_load(&s.st_atim);
558 if (age >= cutoff) {
559 char a[FORMAT_TIMESTAMP_MAX];
560 log_debug("File \"%s\": access time %s is too new.",
561 sub_path,
562 format_timestamp_us(a, sizeof(a), age));
563 continue;
564 }
565
566 age = timespec_load(&s.st_ctim);
567 if (age >= cutoff) {
568 char a[FORMAT_TIMESTAMP_MAX];
569 log_debug("File \"%s\": change time %s is too new.",
570 sub_path,
571 format_timestamp_us(a, sizeof(a), age));
572 continue;
573 }
574
575 log_debug("unlink \"%s\"", sub_path);
576
577 if (unlinkat(dirfd(d), dent->d_name, 0) < 0)
578 if (errno != ENOENT)
579 r = log_error_errno(errno, "unlink(%s): %m", sub_path);
580
581 deleted = true;
582 }
583 }
584
585 finish:
586 if (deleted) {
587 usec_t age1, age2;
588 char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX];
589
590 /* Restore original directory timestamps */
591 times[0] = ds->st_atim;
592 times[1] = ds->st_mtim;
593
594 age1 = timespec_load(&ds->st_atim);
595 age2 = timespec_load(&ds->st_mtim);
596 log_debug("Restoring access and modification time on \"%s\": %s, %s",
597 p,
598 format_timestamp_us(a, sizeof(a), age1),
599 format_timestamp_us(b, sizeof(b), age2));
600 if (futimens(dirfd(d), times) < 0)
601 log_error_errno(errno, "utimensat(%s): %m", p);
602 }
603
604 return r;
605 }
606
607 static int path_set_perms(Item *i, const char *path) {
608 _cleanup_close_ int fd = -1;
609 struct stat st;
610
611 assert(i);
612 assert(path);
613
614 /* We open the file with O_PATH here, to make the operation
615 * somewhat atomic. Also there's unfortunately no fchmodat()
616 * with AT_SYMLINK_NOFOLLOW, hence we emulate it here via
617 * O_PATH. */
618
619 fd = open(path, O_NOFOLLOW|O_CLOEXEC|O_PATH);
620 if (fd < 0)
621 return log_error_errno(errno, "Adjusting owner and mode for %s failed: %m", path);
622
623 if (fstatat(fd, "", &st, AT_EMPTY_PATH) < 0)
624 return log_error_errno(errno, "Failed to fstat() file %s: %m", path);
625
626 if (S_ISLNK(st.st_mode))
627 log_debug("Skipping mode an owner fix for symlink %s.", path);
628 else {
629 char fn[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
630 xsprintf(fn, "/proc/self/fd/%i", fd);
631
632 /* not using i->path directly because it may be a glob */
633 if (i->mode_set) {
634 mode_t m = i->mode;
635
636 if (i->mask_perms) {
637 if (!(st.st_mode & 0111))
638 m &= ~0111;
639 if (!(st.st_mode & 0222))
640 m &= ~0222;
641 if (!(st.st_mode & 0444))
642 m &= ~0444;
643 if (!S_ISDIR(st.st_mode))
644 m &= ~07000; /* remove sticky/sgid/suid bit, unless directory */
645 }
646
647 if (m == (st.st_mode & 07777))
648 log_debug("\"%s\" has right mode %o", path, st.st_mode);
649 else {
650 log_debug("chmod \"%s\" to mode %o", path, m);
651 if (chmod(fn, m) < 0)
652 return log_error_errno(errno, "chmod(%s) failed: %m", path);
653 }
654 }
655
656 if ((i->uid != st.st_uid || i->gid != st.st_gid) &&
657 (i->uid_set || i->gid_set)) {
658 log_debug("chown \"%s\" to "UID_FMT"."GID_FMT,
659 path,
660 i->uid_set ? i->uid : UID_INVALID,
661 i->gid_set ? i->gid : GID_INVALID);
662 if (chown(fn,
663 i->uid_set ? i->uid : UID_INVALID,
664 i->gid_set ? i->gid : GID_INVALID) < 0)
665 return log_error_errno(errno, "chown(%s) failed: %m", path);
666 }
667 }
668
669 fd = safe_close(fd);
670
671 return label_fix(path, false, false);
672 }
673
674 static int parse_xattrs_from_arg(Item *i) {
675 const char *p;
676 int r;
677
678 assert(i);
679 assert(i->argument);
680
681 p = i->argument;
682
683 for (;;) {
684 _cleanup_free_ char *name = NULL, *value = NULL, *xattr = NULL, *xattr_replaced = NULL;
685
686 r = extract_first_word(&p, &xattr, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE);
687 if (r < 0)
688 log_warning_errno(r, "Failed to parse extended attribute '%s', ignoring: %m", p);
689 if (r <= 0)
690 break;
691
692 r = specifier_printf(xattr, specifier_table, NULL, &xattr_replaced);
693 if (r < 0)
694 return log_error_errno(r, "Failed to replace specifiers in extended attribute '%s': %m", xattr);
695
696 r = split_pair(xattr_replaced, "=", &name, &value);
697 if (r < 0) {
698 log_warning_errno(r, "Failed to parse extended attribute, ignoring: %s", xattr);
699 continue;
700 }
701
702 if (isempty(name) || isempty(value)) {
703 log_warning("Malformed extended attribute found, ignoring: %s", xattr);
704 continue;
705 }
706
707 if (strv_push_pair(&i->xattrs, name, value) < 0)
708 return log_oom();
709
710 name = value = NULL;
711 }
712
713 return 0;
714 }
715
716 static int path_set_xattrs(Item *i, const char *path) {
717 char **name, **value;
718
719 assert(i);
720 assert(path);
721
722 STRV_FOREACH_PAIR(name, value, i->xattrs) {
723 int n;
724
725 n = strlen(*value);
726 log_debug("Setting extended attribute '%s=%s' on %s.", *name, *value, path);
727 if (lsetxattr(path, *name, *value, n, 0) < 0) {
728 log_error("Setting extended attribute %s=%s on %s failed: %m", *name, *value, path);
729 return -errno;
730 }
731 }
732 return 0;
733 }
734
735 static int parse_acls_from_arg(Item *item) {
736 #ifdef HAVE_ACL
737 int r;
738
739 assert(item);
740
741 /* If force (= modify) is set, we will not modify the acl
742 * afterwards, so the mask can be added now if necessary. */
743
744 r = parse_acl(item->argument, &item->acl_access, &item->acl_default, !item->force);
745 if (r < 0)
746 log_warning_errno(r, "Failed to parse ACL \"%s\": %m. Ignoring", item->argument);
747 #else
748 log_warning_errno(ENOSYS, "ACLs are not supported. Ignoring");
749 #endif
750
751 return 0;
752 }
753
754 #ifdef HAVE_ACL
755 static int path_set_acl(const char *path, const char *pretty, acl_type_t type, acl_t acl, bool modify) {
756 _cleanup_(acl_free_charpp) char *t = NULL;
757 _cleanup_(acl_freep) acl_t dup = NULL;
758 int r;
759
760 /* Returns 0 for success, positive error if already warned,
761 * negative error otherwise. */
762
763 if (modify) {
764 r = acls_for_file(path, type, acl, &dup);
765 if (r < 0)
766 return r;
767
768 r = calc_acl_mask_if_needed(&dup);
769 if (r < 0)
770 return r;
771 } else {
772 dup = acl_dup(acl);
773 if (!dup)
774 return -errno;
775
776 /* the mask was already added earlier if needed */
777 }
778
779 r = add_base_acls_if_needed(&dup, path);
780 if (r < 0)
781 return r;
782
783 t = acl_to_any_text(dup, NULL, ',', TEXT_ABBREVIATE);
784 log_debug("Setting %s ACL %s on %s.",
785 type == ACL_TYPE_ACCESS ? "access" : "default",
786 strna(t), pretty);
787
788 r = acl_set_file(path, type, dup);
789 if (r < 0)
790 /* Return positive to indicate we already warned */
791 return -log_error_errno(errno,
792 "Setting %s ACL \"%s\" on %s failed: %m",
793 type == ACL_TYPE_ACCESS ? "access" : "default",
794 strna(t), pretty);
795
796 return 0;
797 }
798 #endif
799
800 static int path_set_acls(Item *item, const char *path) {
801 int r = 0;
802 #ifdef HAVE_ACL
803 char fn[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
804 _cleanup_close_ int fd = -1;
805 struct stat st;
806
807 assert(item);
808 assert(path);
809
810 fd = open(path, O_NOFOLLOW|O_CLOEXEC|O_PATH);
811 if (fd < 0)
812 return log_error_errno(errno, "Adjusting ACL of %s failed: %m", path);
813
814 if (fstatat(fd, "", &st, AT_EMPTY_PATH) < 0)
815 return log_error_errno(errno, "Failed to fstat() file %s: %m", path);
816
817 if (S_ISLNK(st.st_mode)) {
818 log_debug("Skipping ACL fix for symlink %s.", path);
819 return 0;
820 }
821
822 xsprintf(fn, "/proc/self/fd/%i", fd);
823
824 if (item->acl_access)
825 r = path_set_acl(fn, path, ACL_TYPE_ACCESS, item->acl_access, item->force);
826
827 if (r == 0 && item->acl_default)
828 r = path_set_acl(fn, path, ACL_TYPE_DEFAULT, item->acl_default, item->force);
829
830 if (r > 0)
831 return -r; /* already warned */
832 else if (r == -EOPNOTSUPP) {
833 log_debug_errno(r, "ACLs not supported by file system at %s", path);
834 return 0;
835 } else if (r < 0)
836 log_error_errno(r, "ACL operation on \"%s\" failed: %m", path);
837 #endif
838 return r;
839 }
840
841 #define ATTRIBUTES_ALL \
842 (FS_NOATIME_FL | \
843 FS_SYNC_FL | \
844 FS_DIRSYNC_FL | \
845 FS_APPEND_FL | \
846 FS_COMPR_FL | \
847 FS_NODUMP_FL | \
848 FS_EXTENT_FL | \
849 FS_IMMUTABLE_FL | \
850 FS_JOURNAL_DATA_FL | \
851 FS_SECRM_FL | \
852 FS_UNRM_FL | \
853 FS_NOTAIL_FL | \
854 FS_TOPDIR_FL | \
855 FS_NOCOW_FL)
856
857 static int parse_attribute_from_arg(Item *item) {
858
859 static const struct {
860 char character;
861 unsigned value;
862 } attributes[] = {
863 { 'A', FS_NOATIME_FL }, /* do not update atime */
864 { 'S', FS_SYNC_FL }, /* Synchronous updates */
865 { 'D', FS_DIRSYNC_FL }, /* dirsync behaviour (directories only) */
866 { 'a', FS_APPEND_FL }, /* writes to file may only append */
867 { 'c', FS_COMPR_FL }, /* Compress file */
868 { 'd', FS_NODUMP_FL }, /* do not dump file */
869 { 'e', FS_EXTENT_FL }, /* Extents */
870 { 'i', FS_IMMUTABLE_FL }, /* Immutable file */
871 { 'j', FS_JOURNAL_DATA_FL }, /* Reserved for ext3 */
872 { 's', FS_SECRM_FL }, /* Secure deletion */
873 { 'u', FS_UNRM_FL }, /* Undelete */
874 { 't', FS_NOTAIL_FL }, /* file tail should not be merged */
875 { 'T', FS_TOPDIR_FL }, /* Top of directory hierarchies*/
876 { 'C', FS_NOCOW_FL }, /* Do not cow file */
877 };
878
879 enum {
880 MODE_ADD,
881 MODE_DEL,
882 MODE_SET
883 } mode = MODE_ADD;
884
885 unsigned value = 0, mask = 0;
886 const char *p;
887
888 assert(item);
889
890 p = item->argument;
891 if (p) {
892 if (*p == '+') {
893 mode = MODE_ADD;
894 p++;
895 } else if (*p == '-') {
896 mode = MODE_DEL;
897 p++;
898 } else if (*p == '=') {
899 mode = MODE_SET;
900 p++;
901 }
902 }
903
904 if (isempty(p) && mode != MODE_SET) {
905 log_error("Setting file attribute on '%s' needs an attribute specification.", item->path);
906 return -EINVAL;
907 }
908
909 for (; p && *p ; p++) {
910 unsigned i, v;
911
912 for (i = 0; i < ELEMENTSOF(attributes); i++)
913 if (*p == attributes[i].character)
914 break;
915
916 if (i >= ELEMENTSOF(attributes)) {
917 log_error("Unknown file attribute '%c' on '%s'.", *p, item->path);
918 return -EINVAL;
919 }
920
921 v = attributes[i].value;
922
923 SET_FLAG(value, v, (mode == MODE_ADD || mode == MODE_SET));
924
925 mask |= v;
926 }
927
928 if (mode == MODE_SET)
929 mask |= ATTRIBUTES_ALL;
930
931 assert(mask != 0);
932
933 item->attribute_mask = mask;
934 item->attribute_value = value;
935 item->attribute_set = true;
936
937 return 0;
938 }
939
940 static int path_set_attribute(Item *item, const char *path) {
941 _cleanup_close_ int fd = -1;
942 struct stat st;
943 unsigned f;
944 int r;
945
946 if (!item->attribute_set || item->attribute_mask == 0)
947 return 0;
948
949 fd = open(path, O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_NOATIME|O_NOFOLLOW);
950 if (fd < 0) {
951 if (errno == ELOOP)
952 return log_error_errno(errno, "Skipping file attributes adjustment on symlink %s.", path);
953
954 return log_error_errno(errno, "Cannot open '%s': %m", path);
955 }
956
957 if (fstat(fd, &st) < 0)
958 return log_error_errno(errno, "Cannot stat '%s': %m", path);
959
960 /* Issuing the file attribute ioctls on device nodes is not
961 * safe, as that will be delivered to the drivers, not the
962 * file system containing the device node. */
963 if (!S_ISREG(st.st_mode) && !S_ISDIR(st.st_mode)) {
964 log_error("Setting file flags is only supported on regular files and directories, cannot set on '%s'.", path);
965 return -EINVAL;
966 }
967
968 f = item->attribute_value & item->attribute_mask;
969
970 /* Mask away directory-specific flags */
971 if (!S_ISDIR(st.st_mode))
972 f &= ~FS_DIRSYNC_FL;
973
974 r = chattr_fd(fd, f, item->attribute_mask);
975 if (r < 0)
976 log_full_errno(r == -ENOTTY ? LOG_DEBUG : LOG_WARNING,
977 r,
978 "Cannot set file attribute for '%s', value=0x%08x, mask=0x%08x: %m",
979 path, item->attribute_value, item->attribute_mask);
980
981 return 0;
982 }
983
984 static int write_one_file(Item *i, const char *path) {
985 _cleanup_close_ int fd = -1;
986 int flags, r = 0;
987 struct stat st;
988
989 assert(i);
990 assert(path);
991
992 flags = i->type == CREATE_FILE ? O_CREAT|O_APPEND|O_NOFOLLOW :
993 i->type == TRUNCATE_FILE ? O_CREAT|O_TRUNC|O_NOFOLLOW : 0;
994
995 RUN_WITH_UMASK(0000) {
996 mac_selinux_create_file_prepare(path, S_IFREG);
997 fd = open(path, flags|O_NDELAY|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode);
998 mac_selinux_create_file_clear();
999 }
1000
1001 if (fd < 0) {
1002 if (i->type == WRITE_FILE && errno == ENOENT) {
1003 log_debug_errno(errno, "Not writing \"%s\": %m", path);
1004 return 0;
1005 }
1006
1007 r = -errno;
1008 if (!i->argument && errno == EROFS && stat(path, &st) == 0 &&
1009 (i->type == CREATE_FILE || st.st_size == 0))
1010 goto check_mode;
1011
1012 return log_error_errno(r, "Failed to create file %s: %m", path);
1013 }
1014
1015 if (i->argument) {
1016 _cleanup_free_ char *unescaped = NULL, *replaced = NULL;
1017
1018 log_debug("%s to \"%s\".", i->type == CREATE_FILE ? "Appending" : "Writing", path);
1019
1020 r = cunescape(i->argument, 0, &unescaped);
1021 if (r < 0)
1022 return log_error_errno(r, "Failed to unescape parameter to write: %s", i->argument);
1023
1024 r = specifier_printf(unescaped, specifier_table, NULL, &replaced);
1025 if (r < 0)
1026 return log_error_errno(r, "Failed to replace specifiers in parameter to write '%s': %m", unescaped);
1027
1028 r = loop_write(fd, replaced, strlen(replaced), false);
1029 if (r < 0)
1030 return log_error_errno(r, "Failed to write file \"%s\": %m", path);
1031 } else
1032 log_debug("\"%s\" has been created.", path);
1033
1034 fd = safe_close(fd);
1035
1036 if (stat(path, &st) < 0)
1037 return log_error_errno(errno, "stat(%s) failed: %m", path);
1038
1039 check_mode:
1040 if (!S_ISREG(st.st_mode)) {
1041 log_error("%s is not a file.", path);
1042 return -EEXIST;
1043 }
1044
1045 r = path_set_perms(i, path);
1046 if (r < 0)
1047 return r;
1048
1049 return 0;
1050 }
1051
1052 typedef int (*action_t)(Item *, const char *);
1053
1054 static int item_do_children(Item *i, const char *path, action_t action) {
1055 _cleanup_closedir_ DIR *d;
1056 int r = 0;
1057
1058 assert(i);
1059 assert(path);
1060
1061 /* This returns the first error we run into, but nevertheless
1062 * tries to go on */
1063
1064 d = opendir_nomod(path);
1065 if (!d)
1066 return errno == ENOENT || errno == ENOTDIR ? 0 : -errno;
1067
1068 for (;;) {
1069 _cleanup_free_ char *p = NULL;
1070 struct dirent *de;
1071 int q;
1072
1073 errno = 0;
1074 de = readdir(d);
1075 if (!de) {
1076 if (errno > 0 && r == 0)
1077 r = -errno;
1078
1079 break;
1080 }
1081
1082 if (STR_IN_SET(de->d_name, ".", ".."))
1083 continue;
1084
1085 p = strjoin(path, "/", de->d_name);
1086 if (!p)
1087 return -ENOMEM;
1088
1089 q = action(i, p);
1090 if (q < 0 && q != -ENOENT && r == 0)
1091 r = q;
1092
1093 if (IN_SET(de->d_type, DT_UNKNOWN, DT_DIR)) {
1094 q = item_do_children(i, p, action);
1095 if (q < 0 && r == 0)
1096 r = q;
1097 }
1098 }
1099
1100 return r;
1101 }
1102
1103 static int glob_item(Item *i, action_t action, bool recursive) {
1104 _cleanup_globfree_ glob_t g = {
1105 .gl_closedir = (void (*)(void *)) closedir,
1106 .gl_readdir = (struct dirent *(*)(void *)) readdir,
1107 .gl_opendir = (void *(*)(const char *)) opendir_nomod,
1108 .gl_lstat = lstat,
1109 .gl_stat = stat,
1110 };
1111 int r = 0, k;
1112 char **fn;
1113
1114 errno = 0;
1115 k = glob(i->path, GLOB_NOSORT|GLOB_BRACE|GLOB_ALTDIRFUNC, NULL, &g);
1116 if (k != 0 && k != GLOB_NOMATCH)
1117 return log_error_errno(errno ?: EIO, "glob(%s) failed: %m", i->path);
1118
1119 STRV_FOREACH(fn, g.gl_pathv) {
1120 k = action(i, *fn);
1121 if (k < 0 && r == 0)
1122 r = k;
1123
1124 if (recursive) {
1125 k = item_do_children(i, *fn, action);
1126 if (k < 0 && r == 0)
1127 r = k;
1128 }
1129 }
1130
1131 return r;
1132 }
1133
1134 typedef enum {
1135 CREATION_NORMAL,
1136 CREATION_EXISTING,
1137 CREATION_FORCE,
1138 _CREATION_MODE_MAX,
1139 _CREATION_MODE_INVALID = -1
1140 } CreationMode;
1141
1142 static const char *creation_mode_verb_table[_CREATION_MODE_MAX] = {
1143 [CREATION_NORMAL] = "Created",
1144 [CREATION_EXISTING] = "Found existing",
1145 [CREATION_FORCE] = "Created replacement",
1146 };
1147
1148 DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb, CreationMode);
1149
1150 static int create_item(Item *i) {
1151 _cleanup_free_ char *resolved = NULL;
1152 struct stat st;
1153 int r = 0;
1154 int q = 0;
1155 CreationMode creation;
1156
1157 assert(i);
1158
1159 log_debug("Running create action for entry %c %s", (char) i->type, i->path);
1160
1161 switch (i->type) {
1162
1163 case IGNORE_PATH:
1164 case IGNORE_DIRECTORY_PATH:
1165 case REMOVE_PATH:
1166 case RECURSIVE_REMOVE_PATH:
1167 return 0;
1168
1169 case CREATE_FILE:
1170 case TRUNCATE_FILE:
1171 r = write_one_file(i, i->path);
1172 if (r < 0)
1173 return r;
1174 break;
1175
1176 case COPY_FILES: {
1177 r = specifier_printf(i->argument, specifier_table, NULL, &resolved);
1178 if (r < 0)
1179 return log_error_errno(r, "Failed to substitute specifiers in copy source %s: %m", i->argument);
1180
1181 log_debug("Copying tree \"%s\" to \"%s\".", resolved, i->path);
1182 r = copy_tree(resolved, i->path, false);
1183
1184 if (r == -EROFS && stat(i->path, &st) == 0)
1185 r = -EEXIST;
1186
1187 if (r < 0) {
1188 struct stat a, b;
1189
1190 if (r != -EEXIST)
1191 return log_error_errno(r, "Failed to copy files to %s: %m", i->path);
1192
1193 if (stat(resolved, &a) < 0)
1194 return log_error_errno(errno, "stat(%s) failed: %m", resolved);
1195
1196 if (stat(i->path, &b) < 0)
1197 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1198
1199 if ((a.st_mode ^ b.st_mode) & S_IFMT) {
1200 log_debug("Can't copy to %s, file exists already and is of different type", i->path);
1201 return 0;
1202 }
1203 }
1204
1205 r = path_set_perms(i, i->path);
1206 if (r < 0)
1207 return r;
1208
1209 break;
1210
1211 case WRITE_FILE:
1212 r = glob_item(i, write_one_file, false);
1213 if (r < 0)
1214 return r;
1215
1216 break;
1217
1218 case CREATE_DIRECTORY:
1219 case TRUNCATE_DIRECTORY:
1220 case CREATE_SUBVOLUME:
1221 case CREATE_SUBVOLUME_INHERIT_QUOTA:
1222 case CREATE_SUBVOLUME_NEW_QUOTA:
1223 RUN_WITH_UMASK(0000)
1224 mkdir_parents_label(i->path, 0755);
1225
1226 if (IN_SET(i->type, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA)) {
1227
1228 if (btrfs_is_subvol(isempty(arg_root) ? "/" : arg_root) <= 0)
1229
1230 /* Don't create a subvolume unless the
1231 * root directory is one, too. We do
1232 * this under the assumption that if
1233 * the root directory is just a plain
1234 * directory (i.e. very light-weight),
1235 * we shouldn't try to split it up
1236 * into subvolumes (i.e. more
1237 * heavy-weight). Thus, chroot()
1238 * environments and suchlike will get
1239 * a full brtfs subvolume set up below
1240 * their tree only if they
1241 * specifically set up a btrfs
1242 * subvolume for the root dir too. */
1243
1244 r = -ENOTTY;
1245 else {
1246 RUN_WITH_UMASK((~i->mode) & 0777)
1247 r = btrfs_subvol_make(i->path);
1248 }
1249 } else
1250 r = 0;
1251
1252 if (IN_SET(i->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY) || r == -ENOTTY)
1253 RUN_WITH_UMASK(0000)
1254 r = mkdir_label(i->path, i->mode);
1255
1256 if (r < 0) {
1257 int k;
1258
1259 if (r != -EEXIST && r != -EROFS)
1260 return log_error_errno(r, "Failed to create directory or subvolume \"%s\": %m", i->path);
1261
1262 k = is_dir(i->path, false);
1263 if (k == -ENOENT && r == -EROFS)
1264 return log_error_errno(r, "%s does not exist and cannot be created as the file system is read-only.", i->path);
1265 if (k < 0)
1266 return log_error_errno(k, "Failed to check if %s exists: %m", i->path);
1267 if (!k) {
1268 log_warning("\"%s\" already exists and is not a directory.", i->path);
1269 return 0;
1270 }
1271
1272 creation = CREATION_EXISTING;
1273 } else
1274 creation = CREATION_NORMAL;
1275
1276 log_debug("%s directory \"%s\".", creation_mode_verb_to_string(creation), i->path);
1277
1278 if (IN_SET(i->type, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)) {
1279 r = btrfs_subvol_auto_qgroup(i->path, 0, i->type == CREATE_SUBVOLUME_NEW_QUOTA);
1280 if (r == -ENOTTY)
1281 log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (unsupported fs or dir not a subvolume): %m", i->path);
1282 else if (r == -EROFS)
1283 log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (fs is read-only).", i->path);
1284 else if (r == -ENOPROTOOPT)
1285 log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (quota support is disabled).", i->path);
1286 else if (r < 0)
1287 q = log_error_errno(r, "Failed to adjust quota for subvolume \"%s\": %m", i->path);
1288 else if (r > 0)
1289 log_debug("Adjusted quota for subvolume \"%s\".", i->path);
1290 else if (r == 0)
1291 log_debug("Quota for subvolume \"%s\" already in place, no change made.", i->path);
1292 }
1293
1294 /* fall through */
1295
1296 case EMPTY_DIRECTORY:
1297 r = path_set_perms(i, i->path);
1298 if (q < 0)
1299 return q;
1300 if (r < 0)
1301 return r;
1302
1303 break;
1304
1305 case CREATE_FIFO:
1306 RUN_WITH_UMASK(0000) {
1307 mac_selinux_create_file_prepare(i->path, S_IFIFO);
1308 r = mkfifo(i->path, i->mode);
1309 mac_selinux_create_file_clear();
1310 }
1311
1312 if (r < 0) {
1313 if (errno != EEXIST)
1314 return log_error_errno(errno, "Failed to create fifo %s: %m", i->path);
1315
1316 if (lstat(i->path, &st) < 0)
1317 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1318
1319 if (!S_ISFIFO(st.st_mode)) {
1320
1321 if (i->force) {
1322 RUN_WITH_UMASK(0000) {
1323 mac_selinux_create_file_prepare(i->path, S_IFIFO);
1324 r = mkfifo_atomic(i->path, i->mode);
1325 mac_selinux_create_file_clear();
1326 }
1327
1328 if (r < 0)
1329 return log_error_errno(r, "Failed to create fifo %s: %m", i->path);
1330 creation = CREATION_FORCE;
1331 } else {
1332 log_warning("\"%s\" already exists and is not a fifo.", i->path);
1333 return 0;
1334 }
1335 } else
1336 creation = CREATION_EXISTING;
1337 } else
1338 creation = CREATION_NORMAL;
1339 log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation), i->path);
1340
1341 r = path_set_perms(i, i->path);
1342 if (r < 0)
1343 return r;
1344
1345 break;
1346 }
1347
1348 case CREATE_SYMLINK: {
1349 r = specifier_printf(i->argument, specifier_table, NULL, &resolved);
1350 if (r < 0)
1351 return log_error_errno(r, "Failed to substitute specifiers in symlink target %s: %m", i->argument);
1352
1353 mac_selinux_create_file_prepare(i->path, S_IFLNK);
1354 r = symlink(resolved, i->path);
1355 mac_selinux_create_file_clear();
1356
1357 if (r < 0) {
1358 _cleanup_free_ char *x = NULL;
1359
1360 if (errno != EEXIST)
1361 return log_error_errno(errno, "symlink(%s, %s) failed: %m", resolved, i->path);
1362
1363 r = readlink_malloc(i->path, &x);
1364 if (r < 0 || !streq(resolved, x)) {
1365
1366 if (i->force) {
1367 mac_selinux_create_file_prepare(i->path, S_IFLNK);
1368 r = symlink_atomic(resolved, i->path);
1369 mac_selinux_create_file_clear();
1370
1371 if (r < 0)
1372 return log_error_errno(r, "symlink(%s, %s) failed: %m", resolved, i->path);
1373
1374 creation = CREATION_FORCE;
1375 } else {
1376 log_debug("\"%s\" is not a symlink or does not point to the correct path.", i->path);
1377 return 0;
1378 }
1379 } else
1380 creation = CREATION_EXISTING;
1381 } else
1382
1383 creation = CREATION_NORMAL;
1384 log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation), i->path);
1385 break;
1386 }
1387
1388 case CREATE_BLOCK_DEVICE:
1389 case CREATE_CHAR_DEVICE: {
1390 mode_t file_type;
1391
1392 if (have_effective_cap(CAP_MKNOD) == 0) {
1393 /* In a container we lack CAP_MKNOD. We
1394 shouldn't attempt to create the device node in
1395 that case to avoid noise, and we don't support
1396 virtualized devices in containers anyway. */
1397
1398 log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path);
1399 return 0;
1400 }
1401
1402 file_type = i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR;
1403
1404 RUN_WITH_UMASK(0000) {
1405 mac_selinux_create_file_prepare(i->path, file_type);
1406 r = mknod(i->path, i->mode | file_type, i->major_minor);
1407 mac_selinux_create_file_clear();
1408 }
1409
1410 if (r < 0) {
1411 if (errno == EPERM) {
1412 log_debug("We lack permissions, possibly because of cgroup configuration; "
1413 "skipping creation of device node %s.", i->path);
1414 return 0;
1415 }
1416
1417 if (errno != EEXIST)
1418 return log_error_errno(errno, "Failed to create device node %s: %m", i->path);
1419
1420 if (lstat(i->path, &st) < 0)
1421 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1422
1423 if ((st.st_mode & S_IFMT) != file_type) {
1424
1425 if (i->force) {
1426
1427 RUN_WITH_UMASK(0000) {
1428 mac_selinux_create_file_prepare(i->path, file_type);
1429 r = mknod_atomic(i->path, i->mode | file_type, i->major_minor);
1430 mac_selinux_create_file_clear();
1431 }
1432
1433 if (r < 0)
1434 return log_error_errno(r, "Failed to create device node \"%s\": %m", i->path);
1435 creation = CREATION_FORCE;
1436 } else {
1437 log_debug("%s is not a device node.", i->path);
1438 return 0;
1439 }
1440 } else
1441 creation = CREATION_EXISTING;
1442 } else
1443 creation = CREATION_NORMAL;
1444
1445 log_debug("%s %s device node \"%s\" %u:%u.",
1446 creation_mode_verb_to_string(creation),
1447 i->type == CREATE_BLOCK_DEVICE ? "block" : "char",
1448 i->path, major(i->mode), minor(i->mode));
1449
1450 r = path_set_perms(i, i->path);
1451 if (r < 0)
1452 return r;
1453
1454 break;
1455 }
1456
1457 case ADJUST_MODE:
1458 case RELABEL_PATH:
1459 r = glob_item(i, path_set_perms, false);
1460 if (r < 0)
1461 return r;
1462 break;
1463
1464 case RECURSIVE_RELABEL_PATH:
1465 r = glob_item(i, path_set_perms, true);
1466 if (r < 0)
1467 return r;
1468 break;
1469
1470 case SET_XATTR:
1471 r = glob_item(i, path_set_xattrs, false);
1472 if (r < 0)
1473 return r;
1474 break;
1475
1476 case RECURSIVE_SET_XATTR:
1477 r = glob_item(i, path_set_xattrs, true);
1478 if (r < 0)
1479 return r;
1480 break;
1481
1482 case SET_ACL:
1483 r = glob_item(i, path_set_acls, false);
1484 if (r < 0)
1485 return r;
1486 break;
1487
1488 case RECURSIVE_SET_ACL:
1489 r = glob_item(i, path_set_acls, true);
1490 if (r < 0)
1491 return r;
1492 break;
1493
1494 case SET_ATTRIBUTE:
1495 r = glob_item(i, path_set_attribute, false);
1496 if (r < 0)
1497 return r;
1498 break;
1499
1500 case RECURSIVE_SET_ATTRIBUTE:
1501 r = glob_item(i, path_set_attribute, true);
1502 if (r < 0)
1503 return r;
1504 break;
1505 }
1506
1507 return 0;
1508 }
1509
1510 static int remove_item_instance(Item *i, const char *instance) {
1511 int r;
1512
1513 assert(i);
1514
1515 switch (i->type) {
1516
1517 case REMOVE_PATH:
1518 if (remove(instance) < 0 && errno != ENOENT)
1519 return log_error_errno(errno, "rm(%s): %m", instance);
1520
1521 break;
1522
1523 case TRUNCATE_DIRECTORY:
1524 case RECURSIVE_REMOVE_PATH:
1525 /* FIXME: we probably should use dir_cleanup() here
1526 * instead of rm_rf() so that 'x' is honoured. */
1527 log_debug("rm -rf \"%s\"", instance);
1528 r = rm_rf(instance, (i->type == RECURSIVE_REMOVE_PATH ? REMOVE_ROOT|REMOVE_SUBVOLUME : 0) | REMOVE_PHYSICAL);
1529 if (r < 0 && r != -ENOENT)
1530 return log_error_errno(r, "rm_rf(%s): %m", instance);
1531
1532 break;
1533
1534 default:
1535 assert_not_reached("wut?");
1536 }
1537
1538 return 0;
1539 }
1540
1541 static int remove_item(Item *i) {
1542 assert(i);
1543
1544 log_debug("Running remove action for entry %c %s", (char) i->type, i->path);
1545
1546 switch (i->type) {
1547
1548 case REMOVE_PATH:
1549 case TRUNCATE_DIRECTORY:
1550 case RECURSIVE_REMOVE_PATH:
1551 return glob_item(i, remove_item_instance, false);
1552
1553 default:
1554 return 0;
1555 }
1556 }
1557
1558 static int clean_item_instance(Item *i, const char* instance) {
1559 _cleanup_closedir_ DIR *d = NULL;
1560 struct stat s, ps;
1561 bool mountpoint;
1562 usec_t cutoff, n;
1563 char timestamp[FORMAT_TIMESTAMP_MAX];
1564
1565 assert(i);
1566
1567 if (!i->age_set)
1568 return 0;
1569
1570 n = now(CLOCK_REALTIME);
1571 if (n < i->age)
1572 return 0;
1573
1574 cutoff = n - i->age;
1575
1576 d = opendir_nomod(instance);
1577 if (!d) {
1578 if (IN_SET(errno, ENOENT, ENOTDIR)) {
1579 log_debug_errno(errno, "Directory \"%s\": %m", instance);
1580 return 0;
1581 }
1582
1583 return log_error_errno(errno, "Failed to open directory %s: %m", instance);
1584 }
1585
1586 if (fstat(dirfd(d), &s) < 0)
1587 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1588
1589 if (!S_ISDIR(s.st_mode)) {
1590 log_error("%s is not a directory.", i->path);
1591 return -ENOTDIR;
1592 }
1593
1594 if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0)
1595 return log_error_errno(errno, "stat(%s/..) failed: %m", i->path);
1596
1597 mountpoint = s.st_dev != ps.st_dev || s.st_ino == ps.st_ino;
1598
1599 log_debug("Cleanup threshold for %s \"%s\" is %s",
1600 mountpoint ? "mount point" : "directory",
1601 instance,
1602 format_timestamp_us(timestamp, sizeof(timestamp), cutoff));
1603
1604 return dir_cleanup(i, instance, d, &s, cutoff, s.st_dev, mountpoint,
1605 MAX_DEPTH, i->keep_first_level);
1606 }
1607
1608 static int clean_item(Item *i) {
1609 assert(i);
1610
1611 log_debug("Running clean action for entry %c %s", (char) i->type, i->path);
1612
1613 switch (i->type) {
1614 case CREATE_DIRECTORY:
1615 case CREATE_SUBVOLUME:
1616 case CREATE_SUBVOLUME_INHERIT_QUOTA:
1617 case CREATE_SUBVOLUME_NEW_QUOTA:
1618 case EMPTY_DIRECTORY:
1619 case TRUNCATE_DIRECTORY:
1620 case IGNORE_PATH:
1621 case COPY_FILES:
1622 clean_item_instance(i, i->path);
1623 return 0;
1624 case IGNORE_DIRECTORY_PATH:
1625 return glob_item(i, clean_item_instance, false);
1626 default:
1627 return 0;
1628 }
1629 }
1630
1631 static int process_item_array(ItemArray *array);
1632
1633 static int process_item(Item *i) {
1634 int r, q, p, t = 0;
1635 _cleanup_free_ char *prefix = NULL;
1636
1637 assert(i);
1638
1639 if (i->done)
1640 return 0;
1641
1642 i->done = true;
1643
1644 prefix = malloc(strlen(i->path) + 1);
1645 if (!prefix)
1646 return log_oom();
1647
1648 PATH_FOREACH_PREFIX(prefix, i->path) {
1649 ItemArray *j;
1650
1651 j = ordered_hashmap_get(items, prefix);
1652 if (j) {
1653 int s;
1654
1655 s = process_item_array(j);
1656 if (s < 0 && t == 0)
1657 t = s;
1658 }
1659 }
1660
1661 r = arg_create ? create_item(i) : 0;
1662 q = arg_remove ? remove_item(i) : 0;
1663 p = arg_clean ? clean_item(i) : 0;
1664
1665 return t < 0 ? t :
1666 r < 0 ? r :
1667 q < 0 ? q :
1668 p;
1669 }
1670
1671 static int process_item_array(ItemArray *array) {
1672 unsigned n;
1673 int r = 0, k;
1674
1675 assert(array);
1676
1677 for (n = 0; n < array->count; n++) {
1678 k = process_item(array->items + n);
1679 if (k < 0 && r == 0)
1680 r = k;
1681 }
1682
1683 return r;
1684 }
1685
1686 static void item_free_contents(Item *i) {
1687 assert(i);
1688 free(i->path);
1689 free(i->argument);
1690 strv_free(i->xattrs);
1691
1692 #ifdef HAVE_ACL
1693 acl_free(i->acl_access);
1694 acl_free(i->acl_default);
1695 #endif
1696 }
1697
1698 static void item_array_free(ItemArray *a) {
1699 unsigned n;
1700
1701 if (!a)
1702 return;
1703
1704 for (n = 0; n < a->count; n++)
1705 item_free_contents(a->items + n);
1706 free(a->items);
1707 free(a);
1708 }
1709
1710 static int item_compare(const void *a, const void *b) {
1711 const Item *x = a, *y = b;
1712
1713 /* Make sure that the ownership taking item is put first, so
1714 * that we first create the node, and then can adjust it */
1715
1716 if (takes_ownership(x->type) && !takes_ownership(y->type))
1717 return -1;
1718 if (!takes_ownership(x->type) && takes_ownership(y->type))
1719 return 1;
1720
1721 return (int) x->type - (int) y->type;
1722 }
1723
1724 static bool item_compatible(Item *a, Item *b) {
1725 assert(a);
1726 assert(b);
1727 assert(streq(a->path, b->path));
1728
1729 if (takes_ownership(a->type) && takes_ownership(b->type))
1730 /* check if the items are the same */
1731 return streq_ptr(a->argument, b->argument) &&
1732
1733 a->uid_set == b->uid_set &&
1734 a->uid == b->uid &&
1735
1736 a->gid_set == b->gid_set &&
1737 a->gid == b->gid &&
1738
1739 a->mode_set == b->mode_set &&
1740 a->mode == b->mode &&
1741
1742 a->age_set == b->age_set &&
1743 a->age == b->age &&
1744
1745 a->mask_perms == b->mask_perms &&
1746
1747 a->keep_first_level == b->keep_first_level &&
1748
1749 a->major_minor == b->major_minor;
1750
1751 return true;
1752 }
1753
1754 static bool should_include_path(const char *path) {
1755 char **prefix;
1756
1757 STRV_FOREACH(prefix, arg_exclude_prefixes)
1758 if (path_startswith(path, *prefix)) {
1759 log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.",
1760 path, *prefix);
1761 return false;
1762 }
1763
1764 STRV_FOREACH(prefix, arg_include_prefixes)
1765 if (path_startswith(path, *prefix)) {
1766 log_debug("Entry \"%s\" matches include prefix \"%s\".", path, *prefix);
1767 return true;
1768 }
1769
1770 /* no matches, so we should include this path only if we
1771 * have no whitelist at all */
1772 if (strv_length(arg_include_prefixes) == 0)
1773 return true;
1774
1775 log_debug("Entry \"%s\" does not match any include prefix, skipping.", path);
1776 return false;
1777 }
1778
1779 static int parse_line(const char *fname, unsigned line, const char *buffer) {
1780
1781 _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL;
1782 _cleanup_(item_free_contents) Item i = {};
1783 ItemArray *existing;
1784 OrderedHashmap *h;
1785 int r, pos;
1786 bool force = false, boot = false;
1787
1788 assert(fname);
1789 assert(line >= 1);
1790 assert(buffer);
1791
1792 r = extract_many_words(
1793 &buffer,
1794 NULL,
1795 EXTRACT_QUOTES,
1796 &action,
1797 &path,
1798 &mode,
1799 &user,
1800 &group,
1801 &age,
1802 NULL);
1803 if (r < 0)
1804 return log_error_errno(r, "[%s:%u] Failed to parse line: %m", fname, line);
1805 else if (r < 2) {
1806 log_error("[%s:%u] Syntax error.", fname, line);
1807 return -EIO;
1808 }
1809
1810 if (!isempty(buffer) && !streq(buffer, "-")) {
1811 i.argument = strdup(buffer);
1812 if (!i.argument)
1813 return log_oom();
1814 }
1815
1816 if (isempty(action)) {
1817 log_error("[%s:%u] Command too short '%s'.", fname, line, action);
1818 return -EINVAL;
1819 }
1820
1821 for (pos = 1; action[pos]; pos++) {
1822 if (action[pos] == '!' && !boot)
1823 boot = true;
1824 else if (action[pos] == '+' && !force)
1825 force = true;
1826 else {
1827 log_error("[%s:%u] Unknown modifiers in command '%s'",
1828 fname, line, action);
1829 return -EINVAL;
1830 }
1831 }
1832
1833 if (boot && !arg_boot) {
1834 log_debug("Ignoring entry %s \"%s\" because --boot is not specified.",
1835 action, path);
1836 return 0;
1837 }
1838
1839 i.type = action[0];
1840 i.force = force;
1841
1842 r = specifier_printf(path, specifier_table, NULL, &i.path);
1843 if (r < 0) {
1844 log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, path);
1845 return r;
1846 }
1847
1848 switch (i.type) {
1849
1850 case CREATE_DIRECTORY:
1851 case CREATE_SUBVOLUME:
1852 case CREATE_SUBVOLUME_INHERIT_QUOTA:
1853 case CREATE_SUBVOLUME_NEW_QUOTA:
1854 case EMPTY_DIRECTORY:
1855 case TRUNCATE_DIRECTORY:
1856 case CREATE_FIFO:
1857 case IGNORE_PATH:
1858 case IGNORE_DIRECTORY_PATH:
1859 case REMOVE_PATH:
1860 case RECURSIVE_REMOVE_PATH:
1861 case ADJUST_MODE:
1862 case RELABEL_PATH:
1863 case RECURSIVE_RELABEL_PATH:
1864 if (i.argument)
1865 log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname, line, i.type);
1866
1867 break;
1868
1869 case CREATE_FILE:
1870 case TRUNCATE_FILE:
1871 break;
1872
1873 case CREATE_SYMLINK:
1874 if (!i.argument) {
1875 i.argument = strappend("/usr/share/factory/", i.path);
1876 if (!i.argument)
1877 return log_oom();
1878 }
1879 break;
1880
1881 case WRITE_FILE:
1882 if (!i.argument) {
1883 log_error("[%s:%u] Write file requires argument.", fname, line);
1884 return -EBADMSG;
1885 }
1886 break;
1887
1888 case COPY_FILES:
1889 if (!i.argument) {
1890 i.argument = strappend("/usr/share/factory/", i.path);
1891 if (!i.argument)
1892 return log_oom();
1893 } else if (!path_is_absolute(i.argument)) {
1894 log_error("[%s:%u] Source path is not absolute.", fname, line);
1895 return -EBADMSG;
1896 }
1897
1898 path_kill_slashes(i.argument);
1899 break;
1900
1901 case CREATE_CHAR_DEVICE:
1902 case CREATE_BLOCK_DEVICE: {
1903 unsigned major, minor;
1904
1905 if (!i.argument) {
1906 log_error("[%s:%u] Device file requires argument.", fname, line);
1907 return -EBADMSG;
1908 }
1909
1910 if (sscanf(i.argument, "%u:%u", &major, &minor) != 2) {
1911 log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname, line, i.argument);
1912 return -EBADMSG;
1913 }
1914
1915 i.major_minor = makedev(major, minor);
1916 break;
1917 }
1918
1919 case SET_XATTR:
1920 case RECURSIVE_SET_XATTR:
1921 if (!i.argument) {
1922 log_error("[%s:%u] Set extended attribute requires argument.", fname, line);
1923 return -EBADMSG;
1924 }
1925 r = parse_xattrs_from_arg(&i);
1926 if (r < 0)
1927 return r;
1928 break;
1929
1930 case SET_ACL:
1931 case RECURSIVE_SET_ACL:
1932 if (!i.argument) {
1933 log_error("[%s:%u] Set ACLs requires argument.", fname, line);
1934 return -EBADMSG;
1935 }
1936 r = parse_acls_from_arg(&i);
1937 if (r < 0)
1938 return r;
1939 break;
1940
1941 case SET_ATTRIBUTE:
1942 case RECURSIVE_SET_ATTRIBUTE:
1943 if (!i.argument) {
1944 log_error("[%s:%u] Set file attribute requires argument.", fname, line);
1945 return -EBADMSG;
1946 }
1947 r = parse_attribute_from_arg(&i);
1948 if (r < 0)
1949 return r;
1950 break;
1951
1952 default:
1953 log_error("[%s:%u] Unknown command type '%c'.", fname, line, (char) i.type);
1954 return -EBADMSG;
1955 }
1956
1957 if (!path_is_absolute(i.path)) {
1958 log_error("[%s:%u] Path '%s' not absolute.", fname, line, i.path);
1959 return -EBADMSG;
1960 }
1961
1962 path_kill_slashes(i.path);
1963
1964 if (!should_include_path(i.path))
1965 return 0;
1966
1967 if (arg_root) {
1968 char *p;
1969
1970 p = prefix_root(arg_root, i.path);
1971 if (!p)
1972 return log_oom();
1973
1974 free(i.path);
1975 i.path = p;
1976 }
1977
1978 if (!isempty(user) && !streq(user, "-")) {
1979 const char *u = user;
1980
1981 r = get_user_creds(&u, &i.uid, NULL, NULL, NULL);
1982 if (r < 0) {
1983 log_error("[%s:%u] Unknown user '%s'.", fname, line, user);
1984 return r;
1985 }
1986
1987 i.uid_set = true;
1988 }
1989
1990 if (!isempty(group) && !streq(group, "-")) {
1991 const char *g = group;
1992
1993 r = get_group_creds(&g, &i.gid);
1994 if (r < 0) {
1995 log_error("[%s:%u] Unknown group '%s'.", fname, line, group);
1996 return r;
1997 }
1998
1999 i.gid_set = true;
2000 }
2001
2002 if (!isempty(mode) && !streq(mode, "-")) {
2003 const char *mm = mode;
2004 unsigned m;
2005
2006 if (*mm == '~') {
2007 i.mask_perms = true;
2008 mm++;
2009 }
2010
2011 if (parse_mode(mm, &m) < 0) {
2012 log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode);
2013 return -EBADMSG;
2014 }
2015
2016 i.mode = m;
2017 i.mode_set = true;
2018 } else
2019 i.mode = IN_SET(i.type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA) ? 0755 : 0644;
2020
2021 if (!isempty(age) && !streq(age, "-")) {
2022 const char *a = age;
2023
2024 if (*a == '~') {
2025 i.keep_first_level = true;
2026 a++;
2027 }
2028
2029 if (parse_sec(a, &i.age) < 0) {
2030 log_error("[%s:%u] Invalid age '%s'.", fname, line, age);
2031 return -EBADMSG;
2032 }
2033
2034 i.age_set = true;
2035 }
2036
2037 h = needs_glob(i.type) ? globs : items;
2038
2039 existing = ordered_hashmap_get(h, i.path);
2040 if (existing) {
2041 unsigned n;
2042
2043 for (n = 0; n < existing->count; n++) {
2044 if (!item_compatible(existing->items + n, &i)) {
2045 log_warning("[%s:%u] Duplicate line for path \"%s\", ignoring.",
2046 fname, line, i.path);
2047 return 0;
2048 }
2049 }
2050 } else {
2051 existing = new0(ItemArray, 1);
2052 r = ordered_hashmap_put(h, i.path, existing);
2053 if (r < 0)
2054 return log_oom();
2055 }
2056
2057 if (!GREEDY_REALLOC(existing->items, existing->size, existing->count + 1))
2058 return log_oom();
2059
2060 memcpy(existing->items + existing->count++, &i, sizeof(i));
2061
2062 /* Sort item array, to enforce stable ordering of application */
2063 qsort_safe(existing->items, existing->count, sizeof(Item), item_compare);
2064
2065 zero(i);
2066 return 0;
2067 }
2068
2069 static void help(void) {
2070 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
2071 "Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
2072 " -h --help Show this help\n"
2073 " --version Show package version\n"
2074 " --create Create marked files/directories\n"
2075 " --clean Clean up marked directories\n"
2076 " --remove Remove marked files/directories\n"
2077 " --boot Execute actions only safe at boot\n"
2078 " --prefix=PATH Only apply rules with the specified prefix\n"
2079 " --exclude-prefix=PATH Ignore rules with the specified prefix\n"
2080 " --root=PATH Operate on an alternate filesystem root\n",
2081 program_invocation_short_name);
2082 }
2083
2084 static int parse_argv(int argc, char *argv[]) {
2085
2086 enum {
2087 ARG_VERSION = 0x100,
2088 ARG_CREATE,
2089 ARG_CLEAN,
2090 ARG_REMOVE,
2091 ARG_BOOT,
2092 ARG_PREFIX,
2093 ARG_EXCLUDE_PREFIX,
2094 ARG_ROOT,
2095 };
2096
2097 static const struct option options[] = {
2098 { "help", no_argument, NULL, 'h' },
2099 { "version", no_argument, NULL, ARG_VERSION },
2100 { "create", no_argument, NULL, ARG_CREATE },
2101 { "clean", no_argument, NULL, ARG_CLEAN },
2102 { "remove", no_argument, NULL, ARG_REMOVE },
2103 { "boot", no_argument, NULL, ARG_BOOT },
2104 { "prefix", required_argument, NULL, ARG_PREFIX },
2105 { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX },
2106 { "root", required_argument, NULL, ARG_ROOT },
2107 {}
2108 };
2109
2110 int c, r;
2111
2112 assert(argc >= 0);
2113 assert(argv);
2114
2115 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
2116
2117 switch (c) {
2118
2119 case 'h':
2120 help();
2121 return 0;
2122
2123 case ARG_VERSION:
2124 return version();
2125
2126 case ARG_CREATE:
2127 arg_create = true;
2128 break;
2129
2130 case ARG_CLEAN:
2131 arg_clean = true;
2132 break;
2133
2134 case ARG_REMOVE:
2135 arg_remove = true;
2136 break;
2137
2138 case ARG_BOOT:
2139 arg_boot = true;
2140 break;
2141
2142 case ARG_PREFIX:
2143 if (strv_push(&arg_include_prefixes, optarg) < 0)
2144 return log_oom();
2145 break;
2146
2147 case ARG_EXCLUDE_PREFIX:
2148 if (strv_push(&arg_exclude_prefixes, optarg) < 0)
2149 return log_oom();
2150 break;
2151
2152 case ARG_ROOT:
2153 r = parse_path_argument_and_warn(optarg, true, &arg_root);
2154 if (r < 0)
2155 return r;
2156 break;
2157
2158 case '?':
2159 return -EINVAL;
2160
2161 default:
2162 assert_not_reached("Unhandled option");
2163 }
2164
2165 if (!arg_clean && !arg_create && !arg_remove) {
2166 log_error("You need to specify at least one of --clean, --create or --remove.");
2167 return -EINVAL;
2168 }
2169
2170 return 1;
2171 }
2172
2173 static int read_config_file(const char *fn, bool ignore_enoent) {
2174 _cleanup_fclose_ FILE *_f = NULL;
2175 FILE *f;
2176 char line[LINE_MAX];
2177 Iterator iterator;
2178 unsigned v = 0;
2179 Item *i;
2180 int r = 0;
2181
2182 assert(fn);
2183
2184 if (streq(fn, "-")) {
2185 log_debug("Reading config from stdin.");
2186 fn = "<stdin>";
2187 f = stdin;
2188 } else {
2189 r = search_and_fopen_nulstr(fn, "re", arg_root, conf_file_dirs, &_f);
2190 if (r < 0) {
2191 if (ignore_enoent && r == -ENOENT) {
2192 log_debug_errno(r, "Failed to open \"%s\", ignoring: %m", fn);
2193 return 0;
2194 }
2195
2196 return log_error_errno(r, "Failed to open '%s': %m", fn);
2197 }
2198 log_debug("Reading config file \"%s\".", fn);
2199 f = _f;
2200 }
2201
2202 FOREACH_LINE(line, f, break) {
2203 char *l;
2204 int k;
2205
2206 v++;
2207
2208 l = strstrip(line);
2209 if (*l == '#' || *l == 0)
2210 continue;
2211
2212 k = parse_line(fn, v, l);
2213 if (k < 0 && r == 0)
2214 r = k;
2215 }
2216
2217 /* we have to determine age parameter for each entry of type X */
2218 ORDERED_HASHMAP_FOREACH(i, globs, iterator) {
2219 Iterator iter;
2220 Item *j, *candidate_item = NULL;
2221
2222 if (i->type != IGNORE_DIRECTORY_PATH)
2223 continue;
2224
2225 ORDERED_HASHMAP_FOREACH(j, items, iter) {
2226 if (!IN_SET(j->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA))
2227 continue;
2228
2229 if (path_equal(j->path, i->path)) {
2230 candidate_item = j;
2231 break;
2232 }
2233
2234 if ((!candidate_item && path_startswith(i->path, j->path)) ||
2235 (candidate_item && path_startswith(j->path, candidate_item->path) && (fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0)))
2236 candidate_item = j;
2237 }
2238
2239 if (candidate_item && candidate_item->age_set) {
2240 i->age = candidate_item->age;
2241 i->age_set = true;
2242 }
2243 }
2244
2245 if (ferror(f)) {
2246 log_error_errno(errno, "Failed to read from file %s: %m", fn);
2247 if (r == 0)
2248 r = -EIO;
2249 }
2250
2251 return r;
2252 }
2253
2254 int main(int argc, char *argv[]) {
2255 int r, k;
2256 ItemArray *a;
2257 Iterator iterator;
2258
2259 r = parse_argv(argc, argv);
2260 if (r <= 0)
2261 goto finish;
2262
2263 log_set_target(LOG_TARGET_AUTO);
2264 log_parse_environment();
2265 log_open();
2266
2267 umask(0022);
2268
2269 mac_selinux_init();
2270
2271 items = ordered_hashmap_new(&string_hash_ops);
2272 globs = ordered_hashmap_new(&string_hash_ops);
2273
2274 if (!items || !globs) {
2275 r = log_oom();
2276 goto finish;
2277 }
2278
2279 r = 0;
2280
2281 if (optind < argc) {
2282 int j;
2283
2284 for (j = optind; j < argc; j++) {
2285 k = read_config_file(argv[j], false);
2286 if (k < 0 && r == 0)
2287 r = k;
2288 }
2289
2290 } else {
2291 _cleanup_strv_free_ char **files = NULL;
2292 char **f;
2293
2294 r = conf_files_list_nulstr(&files, ".conf", arg_root, conf_file_dirs);
2295 if (r < 0) {
2296 log_error_errno(r, "Failed to enumerate tmpfiles.d files: %m");
2297 goto finish;
2298 }
2299
2300 STRV_FOREACH(f, files) {
2301 k = read_config_file(*f, true);
2302 if (k < 0 && r == 0)
2303 r = k;
2304 }
2305 }
2306
2307 /* The non-globbing ones usually create things, hence we apply
2308 * them first */
2309 ORDERED_HASHMAP_FOREACH(a, items, iterator) {
2310 k = process_item_array(a);
2311 if (k < 0 && r == 0)
2312 r = k;
2313 }
2314
2315 /* The globbing ones usually alter things, hence we apply them
2316 * second. */
2317 ORDERED_HASHMAP_FOREACH(a, globs, iterator) {
2318 k = process_item_array(a);
2319 if (k < 0 && r == 0)
2320 r = k;
2321 }
2322
2323 finish:
2324 while ((a = ordered_hashmap_steal_first(items)))
2325 item_array_free(a);
2326
2327 while ((a = ordered_hashmap_steal_first(globs)))
2328 item_array_free(a);
2329
2330 ordered_hashmap_free(items);
2331 ordered_hashmap_free(globs);
2332
2333 free(arg_include_prefixes);
2334 free(arg_exclude_prefixes);
2335 free(arg_root);
2336
2337 set_free_free(unix_sockets);
2338
2339 mac_selinux_finish();
2340
2341 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
2342 }
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