]> git.ipfire.org Git - thirdparty/systemd.git/blob - src/tmpfiles/tmpfiles.c
projects / thirdparty / systemd.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Drop my copyright headers
[thirdparty/systemd.git] / src / tmpfiles / tmpfiles.c
1 /* SPDX-License-Identifier: LGPL-2.1+ */
2 /***
3 Copyright © 2010 Kay Sievers
4 ***/
5
6 #include <errno.h>
7 #include <fcntl.h>
8 #include <fnmatch.h>
9 #include <getopt.h>
10 #include <glob.h>
11 #include <limits.h>
12 #include <linux/fs.h>
13 #include <stdbool.h>
14 #include <stddef.h>
15 #include <stdio.h>
16 #include <stdlib.h>
17 #include <string.h>
18 #include <sys/stat.h>
19 #include <sys/xattr.h>
20 #include <sysexits.h>
21 #include <time.h>
22 #include <unistd.h>
23
24 #include "sd-path.h"
25
26 #include "acl-util.h"
27 #include "alloc-util.h"
28 #include "btrfs-util.h"
29 #include "capability-util.h"
30 #include "chattr-util.h"
31 #include "conf-files.h"
32 #include "copy.h"
33 #include "def.h"
34 #include "dirent-util.h"
35 #include "escape.h"
36 #include "fd-util.h"
37 #include "fileio.h"
38 #include "format-util.h"
39 #include "fs-util.h"
40 #include "glob-util.h"
41 #include "io-util.h"
42 #include "label.h"
43 #include "log.h"
44 #include "macro.h"
45 #include "missing.h"
46 #include "mkdir.h"
47 #include "mount-util.h"
48 #include "pager.h"
49 #include "parse-util.h"
50 #include "path-lookup.h"
51 #include "path-util.h"
52 #include "rm-rf.h"
53 #include "selinux-util.h"
54 #include "set.h"
55 #include "specifier.h"
56 #include "stat-util.h"
57 #include "stdio-util.h"
58 #include "string-table.h"
59 #include "string-util.h"
60 #include "strv.h"
61 #include "terminal-util.h"
62 #include "umask-util.h"
63 #include "user-util.h"
64 #include "util.h"
65
66 /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates
67 * them in the file system. This is intended to be used to create
68 * properly owned directories beneath /tmp, /var/tmp, /run, which are
69 * volatile and hence need to be recreated on bootup. */
70
71 typedef enum ItemType {
72 /* These ones take file names */
73 CREATE_FILE = 'f',
74 TRUNCATE_FILE = 'F',
75 CREATE_DIRECTORY = 'd',
76 TRUNCATE_DIRECTORY = 'D',
77 CREATE_SUBVOLUME = 'v',
78 CREATE_SUBVOLUME_INHERIT_QUOTA = 'q',
79 CREATE_SUBVOLUME_NEW_QUOTA = 'Q',
80 CREATE_FIFO = 'p',
81 CREATE_SYMLINK = 'L',
82 CREATE_CHAR_DEVICE = 'c',
83 CREATE_BLOCK_DEVICE = 'b',
84 COPY_FILES = 'C',
85
86 /* These ones take globs */
87 WRITE_FILE = 'w',
88 EMPTY_DIRECTORY = 'e',
89 SET_XATTR = 't',
90 RECURSIVE_SET_XATTR = 'T',
91 SET_ACL = 'a',
92 RECURSIVE_SET_ACL = 'A',
93 SET_ATTRIBUTE = 'h',
94 RECURSIVE_SET_ATTRIBUTE = 'H',
95 IGNORE_PATH = 'x',
96 IGNORE_DIRECTORY_PATH = 'X',
97 REMOVE_PATH = 'r',
98 RECURSIVE_REMOVE_PATH = 'R',
99 RELABEL_PATH = 'z',
100 RECURSIVE_RELABEL_PATH = 'Z',
101 ADJUST_MODE = 'm', /* legacy, 'z' is identical to this */
102 } ItemType;
103
104 typedef struct Item {
105 ItemType type;
106
107 char *path;
108 char *argument;
109 char **xattrs;
110 #if HAVE_ACL
111 acl_t acl_access;
112 acl_t acl_default;
113 #endif
114 uid_t uid;
115 gid_t gid;
116 mode_t mode;
117 usec_t age;
118
119 dev_t major_minor;
120 unsigned attribute_value;
121 unsigned attribute_mask;
122
123 bool uid_set:1;
124 bool gid_set:1;
125 bool mode_set:1;
126 bool age_set:1;
127 bool mask_perms:1;
128 bool attribute_set:1;
129
130 bool keep_first_level:1;
131
132 bool force:1;
133
134 bool done:1;
135 } Item;
136
137 typedef struct ItemArray {
138 Item *items;
139 size_t count;
140 size_t size;
141 } ItemArray;
142
143 typedef enum DirectoryType {
144 DIRECTORY_RUNTIME = 0,
145 DIRECTORY_STATE,
146 DIRECTORY_CACHE,
147 DIRECTORY_LOGS,
148 _DIRECTORY_TYPE_MAX,
149 } DirectoryType;
150
151 static bool arg_cat_config = false;
152 static bool arg_user = false;
153 static bool arg_create = false;
154 static bool arg_clean = false;
155 static bool arg_remove = false;
156 static bool arg_boot = false;
157 static bool arg_no_pager = false;
158
159 static char **arg_include_prefixes = NULL;
160 static char **arg_exclude_prefixes = NULL;
161 static char *arg_root = NULL;
162 static char *arg_replace = NULL;
163
164 #define MAX_DEPTH 256
165
166 static OrderedHashmap *items = NULL, *globs = NULL;
167 static Set *unix_sockets = NULL;
168
169 static int specifier_machine_id_safe(char specifier, void *data, void *userdata, char **ret);
170 static int specifier_directory(char specifier, void *data, void *userdata, char **ret);
171
172 static const Specifier specifier_table[] = {
173 { 'm', specifier_machine_id_safe, NULL },
174 { 'b', specifier_boot_id, NULL },
175 { 'H', specifier_host_name, NULL },
176 { 'v', specifier_kernel_release, NULL },
177
178 { 'U', specifier_user_id, NULL },
179 { 'u', specifier_user_name, NULL },
180 { 'h', specifier_user_home, NULL },
181
182 { 't', specifier_directory, UINT_TO_PTR(DIRECTORY_RUNTIME) },
183 { 'S', specifier_directory, UINT_TO_PTR(DIRECTORY_STATE) },
184 { 'C', specifier_directory, UINT_TO_PTR(DIRECTORY_CACHE) },
185 { 'L', specifier_directory, UINT_TO_PTR(DIRECTORY_LOGS) },
186 { 'T', specifier_tmp_dir, NULL },
187 { 'V', specifier_var_tmp_dir, NULL },
188 {}
189 };
190
191 static int specifier_machine_id_safe(char specifier, void *data, void *userdata, char **ret) {
192 int r;
193
194 /* If /etc/machine_id is missing or empty (e.g. in a chroot environment)
195 * return a recognizable error so that the caller can skip the rule
196 * gracefully. */
197
198 r = specifier_machine_id(specifier, data, userdata, ret);
199 if (IN_SET(r, -ENOENT, -ENOMEDIUM))
200 return -ENXIO;
201
202 return r;
203 }
204
205 static int specifier_directory(char specifier, void *data, void *userdata, char **ret) {
206 struct table_entry {
207 uint64_t type;
208 const char *suffix;
209 };
210
211 static const struct table_entry paths_system[] = {
212 [DIRECTORY_RUNTIME] = { SD_PATH_SYSTEM_RUNTIME },
213 [DIRECTORY_STATE] = { SD_PATH_SYSTEM_STATE_PRIVATE },
214 [DIRECTORY_CACHE] = { SD_PATH_SYSTEM_STATE_CACHE },
215 [DIRECTORY_LOGS] = { SD_PATH_SYSTEM_STATE_LOGS },
216 };
217
218 static const struct table_entry paths_user[] = {
219 [DIRECTORY_RUNTIME] = { SD_PATH_USER_RUNTIME },
220 [DIRECTORY_STATE] = { SD_PATH_USER_CONFIGURATION },
221 [DIRECTORY_CACHE] = { SD_PATH_USER_STATE_CACHE },
222 [DIRECTORY_LOGS] = { SD_PATH_USER_CONFIGURATION, "log" },
223 };
224
225 unsigned i;
226 const struct table_entry *paths;
227
228 assert_cc(ELEMENTSOF(paths_system) == ELEMENTSOF(paths_user));
229 paths = arg_user ? paths_user : paths_system;
230
231 i = PTR_TO_UINT(data);
232 assert(i < ELEMENTSOF(paths_system));
233
234 return sd_path_home(paths[i].type, paths[i].suffix, ret);
235 }
236
237 static int log_unresolvable_specifier(const char *filename, unsigned line) {
238 static bool notified = false;
239
240 /* In system mode, this is called when /etc is not fully initialized (e.g.
241 * in a chroot environment) where some specifiers are unresolvable. In user
242 * mode, this is called when some variables are not defined. These cases are
243 * not considered as an error so log at LOG_NOTICE only for the first time
244 * and then downgrade this to LOG_DEBUG for the rest. */
245
246 log_full(notified ? LOG_DEBUG : LOG_NOTICE,
247 "[%s:%u] Failed to resolve specifier: %s, skipping",
248 filename, line,
249 arg_user ? "Required $XDG_... variable not defined" : "uninitialized /etc detected");
250
251 if (!notified)
252 log_notice("All rules containing unresolvable specifiers will be skipped.");
253
254 notified = true;
255 return 0;
256 }
257
258 static int user_config_paths(char*** ret) {
259 _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL;
260 _cleanup_free_ char *persistent_config = NULL, *runtime_config = NULL, *data_home = NULL;
261 _cleanup_strv_free_ char **res = NULL;
262 int r;
263
264 r = xdg_user_dirs(&config_dirs, &data_dirs);
265 if (r < 0)
266 return r;
267
268 r = xdg_user_config_dir(&persistent_config, "/user-tmpfiles.d");
269 if (r < 0 && r != -ENXIO)
270 return r;
271
272 r = xdg_user_runtime_dir(&runtime_config, "/user-tmpfiles.d");
273 if (r < 0 && r != -ENXIO)
274 return r;
275
276 r = xdg_user_data_dir(&data_home, "/user-tmpfiles.d");
277 if (r < 0 && r != -ENXIO)
278 return r;
279
280 r = strv_extend_strv_concat(&res, config_dirs, "/user-tmpfiles.d");
281 if (r < 0)
282 return r;
283
284 r = strv_extend(&res, persistent_config);
285 if (r < 0)
286 return r;
287
288 r = strv_extend(&res, runtime_config);
289 if (r < 0)
290 return r;
291
292 r = strv_extend(&res, data_home);
293 if (r < 0)
294 return r;
295
296 r = strv_extend_strv_concat(&res, data_dirs, "/user-tmpfiles.d");
297 if (r < 0)
298 return r;
299
300 r = path_strv_make_absolute_cwd(res);
301 if (r < 0)
302 return r;
303
304 *ret = TAKE_PTR(res);
305 return 0;
306 }
307
308 static bool needs_glob(ItemType t) {
309 return IN_SET(t,
310 WRITE_FILE,
311 IGNORE_PATH,
312 IGNORE_DIRECTORY_PATH,
313 REMOVE_PATH,
314 RECURSIVE_REMOVE_PATH,
315 EMPTY_DIRECTORY,
316 ADJUST_MODE,
317 RELABEL_PATH,
318 RECURSIVE_RELABEL_PATH,
319 SET_XATTR,
320 RECURSIVE_SET_XATTR,
321 SET_ACL,
322 RECURSIVE_SET_ACL,
323 SET_ATTRIBUTE,
324 RECURSIVE_SET_ATTRIBUTE);
325 }
326
327 static bool takes_ownership(ItemType t) {
328 return IN_SET(t,
329 CREATE_FILE,
330 TRUNCATE_FILE,
331 CREATE_DIRECTORY,
332 EMPTY_DIRECTORY,
333 TRUNCATE_DIRECTORY,
334 CREATE_SUBVOLUME,
335 CREATE_SUBVOLUME_INHERIT_QUOTA,
336 CREATE_SUBVOLUME_NEW_QUOTA,
337 CREATE_FIFO,
338 CREATE_SYMLINK,
339 CREATE_CHAR_DEVICE,
340 CREATE_BLOCK_DEVICE,
341 COPY_FILES,
342 WRITE_FILE,
343 IGNORE_PATH,
344 IGNORE_DIRECTORY_PATH,
345 REMOVE_PATH,
346 RECURSIVE_REMOVE_PATH);
347 }
348
349 static struct Item* find_glob(OrderedHashmap *h, const char *match) {
350 ItemArray *j;
351 Iterator i;
352
353 ORDERED_HASHMAP_FOREACH(j, h, i) {
354 unsigned n;
355
356 for (n = 0; n < j->count; n++) {
357 Item *item = j->items + n;
358
359 if (fnmatch(item->path, match, FNM_PATHNAME|FNM_PERIOD) == 0)
360 return item;
361 }
362 }
363
364 return NULL;
365 }
366
367 static void load_unix_sockets(void) {
368 _cleanup_fclose_ FILE *f = NULL;
369 int r;
370
371 if (unix_sockets)
372 return;
373
374 /* We maintain a cache of the sockets we found in /proc/net/unix to speed things up a little. */
375
376 unix_sockets = set_new(&path_hash_ops);
377 if (!unix_sockets) {
378 log_oom();
379 return;
380 }
381
382 f = fopen("/proc/net/unix", "re");
383 if (!f) {
384 log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_WARNING, errno,
385 "Failed to open /proc/net/unix, ignoring: %m");
386 goto fail;
387 }
388
389 /* Skip header */
390 r = read_line(f, LONG_LINE_MAX, NULL);
391 if (r < 0) {
392 log_warning_errno(r, "Failed to skip /proc/net/unix header line: %m");
393 goto fail;
394 }
395 if (r == 0) {
396 log_warning("Premature end of file reading /proc/net/unix.");
397 goto fail;
398 }
399
400 for (;;) {
401 _cleanup_free_ char *line = NULL;
402 char *p, *s;
403
404 r = read_line(f, LONG_LINE_MAX, &line);
405 if (r < 0) {
406 log_warning_errno(r, "Failed to read /proc/net/unix line, ignoring: %m");
407 goto fail;
408 }
409 if (r == 0) /* EOF */
410 break;
411
412 p = strchr(line, ':');
413 if (!p)
414 continue;
415
416 if (strlen(p) < 37)
417 continue;
418
419 p += 37;
420 p += strspn(p, WHITESPACE);
421 p += strcspn(p, WHITESPACE); /* skip one more word */
422 p += strspn(p, WHITESPACE);
423
424 if (*p != '/')
425 continue;
426
427 s = strdup(p);
428 if (!s) {
429 log_oom();
430 goto fail;
431 }
432
433 path_simplify(s, false);
434
435 r = set_consume(unix_sockets, s);
436 if (r < 0 && r != -EEXIST) {
437 log_warning_errno(r, "Failed to add AF_UNIX socket to set, ignoring: %m");
438 goto fail;
439 }
440 }
441
442 return;
443
444 fail:
445 unix_sockets = set_free_free(unix_sockets);
446 }
447
448 static bool unix_socket_alive(const char *fn) {
449 assert(fn);
450
451 load_unix_sockets();
452
453 if (unix_sockets)
454 return !!set_get(unix_sockets, (char*) fn);
455
456 /* We don't know, so assume yes */
457 return true;
458 }
459
460 static int dir_is_mount_point(DIR *d, const char *subdir) {
461
462 int mount_id_parent, mount_id;
463 int r_p, r;
464
465 r_p = name_to_handle_at_loop(dirfd(d), ".", NULL, &mount_id_parent, 0);
466 if (r_p < 0)
467 r_p = -errno;
468
469 r = name_to_handle_at_loop(dirfd(d), subdir, NULL, &mount_id, 0);
470 if (r < 0)
471 r = -errno;
472
473 /* got no handle; make no assumptions, return error */
474 if (r_p < 0 && r < 0)
475 return r_p;
476
477 /* got both handles; if they differ, it is a mount point */
478 if (r_p >= 0 && r >= 0)
479 return mount_id_parent != mount_id;
480
481 /* got only one handle; assume different mount points if one
482 * of both queries was not supported by the filesystem */
483 if (IN_SET(r_p, -ENOSYS, -EOPNOTSUPP) || IN_SET(r, -ENOSYS, -EOPNOTSUPP))
484 return true;
485
486 /* return error */
487 if (r_p < 0)
488 return r_p;
489 return r;
490 }
491
492 static DIR* xopendirat_nomod(int dirfd, const char *path) {
493 DIR *dir;
494
495 dir = xopendirat(dirfd, path, O_NOFOLLOW|O_NOATIME);
496 if (dir)
497 return dir;
498
499 log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path);
500 if (errno != EPERM)
501 return NULL;
502
503 dir = xopendirat(dirfd, path, O_NOFOLLOW);
504 if (!dir)
505 log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path);
506
507 return dir;
508 }
509
510 static DIR* opendir_nomod(const char *path) {
511 return xopendirat_nomod(AT_FDCWD, path);
512 }
513
514 static int dir_cleanup(
515 Item *i,
516 const char *p,
517 DIR *d,
518 const struct stat *ds,
519 usec_t cutoff,
520 dev_t rootdev,
521 bool mountpoint,
522 int maxdepth,
523 bool keep_this_level) {
524
525 struct dirent *dent;
526 struct timespec times[2];
527 bool deleted = false;
528 int r = 0;
529
530 FOREACH_DIRENT_ALL(dent, d, break) {
531 struct stat s;
532 usec_t age;
533 _cleanup_free_ char *sub_path = NULL;
534
535 if (dot_or_dot_dot(dent->d_name))
536 continue;
537
538 if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) {
539 if (errno == ENOENT)
540 continue;
541
542 /* FUSE, NFS mounts, SELinux might return EACCES */
543 r = log_full_errno(errno == EACCES ? LOG_DEBUG : LOG_ERR, errno,
544 "stat(%s/%s) failed: %m", p, dent->d_name);
545 continue;
546 }
547
548 /* Stay on the same filesystem */
549 if (s.st_dev != rootdev) {
550 log_debug("Ignoring \"%s/%s\": different filesystem.", p, dent->d_name);
551 continue;
552 }
553
554 /* Try to detect bind mounts of the same filesystem instance; they
555 * do not differ in device major/minors. This type of query is not
556 * supported on all kernels or filesystem types though. */
557 if (S_ISDIR(s.st_mode) && dir_is_mount_point(d, dent->d_name) > 0) {
558 log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.",
559 p, dent->d_name);
560 continue;
561 }
562
563 sub_path = strjoin(p, "/", dent->d_name);
564 if (!sub_path) {
565 r = log_oom();
566 goto finish;
567 }
568
569 /* Is there an item configured for this path? */
570 if (ordered_hashmap_get(items, sub_path)) {
571 log_debug("Ignoring \"%s\": a separate entry exists.", sub_path);
572 continue;
573 }
574
575 if (find_glob(globs, sub_path)) {
576 log_debug("Ignoring \"%s\": a separate glob exists.", sub_path);
577 continue;
578 }
579
580 if (S_ISDIR(s.st_mode)) {
581
582 if (mountpoint &&
583 streq(dent->d_name, "lost+found") &&
584 s.st_uid == 0) {
585 log_debug("Ignoring \"%s\".", sub_path);
586 continue;
587 }
588
589 if (maxdepth <= 0)
590 log_warning("Reached max depth on \"%s\".", sub_path);
591 else {
592 _cleanup_closedir_ DIR *sub_dir;
593 int q;
594
595 sub_dir = xopendirat_nomod(dirfd(d), dent->d_name);
596 if (!sub_dir) {
597 if (errno != ENOENT)
598 r = log_error_errno(errno, "opendir(%s) failed: %m", sub_path);
599
600 continue;
601 }
602
603 q = dir_cleanup(i, sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1, false);
604 if (q < 0)
605 r = q;
606 }
607
608 /* Note: if you are wondering why we don't
609 * support the sticky bit for excluding
610 * directories from cleaning like we do it for
611 * other file system objects: well, the sticky
612 * bit already has a meaning for directories,
613 * so we don't want to overload that. */
614
615 if (keep_this_level) {
616 log_debug("Keeping \"%s\".", sub_path);
617 continue;
618 }
619
620 /* Ignore ctime, we change it when deleting */
621 age = timespec_load(&s.st_mtim);
622 if (age >= cutoff) {
623 char a[FORMAT_TIMESTAMP_MAX];
624 /* Follows spelling in stat(1). */
625 log_debug("Directory \"%s\": modify time %s is too new.",
626 sub_path,
627 format_timestamp_us(a, sizeof(a), age));
628 continue;
629 }
630
631 age = timespec_load(&s.st_atim);
632 if (age >= cutoff) {
633 char a[FORMAT_TIMESTAMP_MAX];
634 log_debug("Directory \"%s\": access time %s is too new.",
635 sub_path,
636 format_timestamp_us(a, sizeof(a), age));
637 continue;
638 }
639
640 log_debug("Removing directory \"%s\".", sub_path);
641 if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0)
642 if (!IN_SET(errno, ENOENT, ENOTEMPTY))
643 r = log_error_errno(errno, "rmdir(%s): %m", sub_path);
644
645 } else {
646 /* Skip files for which the sticky bit is
647 * set. These are semantics we define, and are
648 * unknown elsewhere. See XDG_RUNTIME_DIR
649 * specification for details. */
650 if (s.st_mode & S_ISVTX) {
651 log_debug("Skipping \"%s\": sticky bit set.", sub_path);
652 continue;
653 }
654
655 if (mountpoint && S_ISREG(s.st_mode))
656 if (s.st_uid == 0 && STR_IN_SET(dent->d_name,
657 ".journal",
658 "aquota.user",
659 "aquota.group")) {
660 log_debug("Skipping \"%s\".", sub_path);
661 continue;
662 }
663
664 /* Ignore sockets that are listed in /proc/net/unix */
665 if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path)) {
666 log_debug("Skipping \"%s\": live socket.", sub_path);
667 continue;
668 }
669
670 /* Ignore device nodes */
671 if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) {
672 log_debug("Skipping \"%s\": a device.", sub_path);
673 continue;
674 }
675
676 /* Keep files on this level around if this is
677 * requested */
678 if (keep_this_level) {
679 log_debug("Keeping \"%s\".", sub_path);
680 continue;
681 }
682
683 age = timespec_load(&s.st_mtim);
684 if (age >= cutoff) {
685 char a[FORMAT_TIMESTAMP_MAX];
686 /* Follows spelling in stat(1). */
687 log_debug("File \"%s\": modify time %s is too new.",
688 sub_path,
689 format_timestamp_us(a, sizeof(a), age));
690 continue;
691 }
692
693 age = timespec_load(&s.st_atim);
694 if (age >= cutoff) {
695 char a[FORMAT_TIMESTAMP_MAX];
696 log_debug("File \"%s\": access time %s is too new.",
697 sub_path,
698 format_timestamp_us(a, sizeof(a), age));
699 continue;
700 }
701
702 age = timespec_load(&s.st_ctim);
703 if (age >= cutoff) {
704 char a[FORMAT_TIMESTAMP_MAX];
705 log_debug("File \"%s\": change time %s is too new.",
706 sub_path,
707 format_timestamp_us(a, sizeof(a), age));
708 continue;
709 }
710
711 log_debug("unlink \"%s\"", sub_path);
712
713 if (unlinkat(dirfd(d), dent->d_name, 0) < 0)
714 if (errno != ENOENT)
715 r = log_error_errno(errno, "unlink(%s): %m", sub_path);
716
717 deleted = true;
718 }
719 }
720
721 finish:
722 if (deleted) {
723 usec_t age1, age2;
724 char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX];
725
726 /* Restore original directory timestamps */
727 times[0] = ds->st_atim;
728 times[1] = ds->st_mtim;
729
730 age1 = timespec_load(&ds->st_atim);
731 age2 = timespec_load(&ds->st_mtim);
732 log_debug("Restoring access and modification time on \"%s\": %s, %s",
733 p,
734 format_timestamp_us(a, sizeof(a), age1),
735 format_timestamp_us(b, sizeof(b), age2));
736 if (futimens(dirfd(d), times) < 0)
737 log_error_errno(errno, "utimensat(%s): %m", p);
738 }
739
740 return r;
741 }
742
743 static bool dangerous_hardlinks(void) {
744 _cleanup_free_ char *value = NULL;
745 static int cached = -1;
746 int r;
747
748 /* Check whether the fs.protected_hardlinks sysctl is on. If we can't determine it we assume its off, as that's
749 * what the upstream default is. */
750
751 if (cached >= 0)
752 return cached;
753
754 r = read_one_line_file("/proc/sys/fs/protected_hardlinks", &value);
755 if (r < 0) {
756 log_debug_errno(r, "Failed to read fs.protected_hardlinks sysctl: %m");
757 return true;
758 }
759
760 r = parse_boolean(value);
761 if (r < 0) {
762 log_debug_errno(r, "Failed to parse fs.protected_hardlinks sysctl: %m");
763 return true;
764 }
765
766 cached = r == 0;
767 return cached;
768 }
769
770 static bool hardlink_vulnerable(const struct stat *st) {
771 assert(st);
772
773 return !S_ISDIR(st->st_mode) && st->st_nlink > 1 && dangerous_hardlinks();
774 }
775
776 static int fd_set_perms(Item *i, int fd, const struct stat *st) {
777 _cleanup_free_ char *path = NULL;
778 int r;
779
780 assert(i);
781 assert(fd);
782
783 r = fd_get_path(fd, &path);
784 if (r < 0)
785 return r;
786
787 if (!i->mode_set && !i->uid_set && !i->gid_set)
788 goto shortcut;
789
790 if (hardlink_vulnerable(st)) {
791 log_error("Refusing to set permissions on hardlinked file %s while the fs.protected_hardlinks sysctl is turned off.", path);
792 return -EPERM;
793 }
794
795 if (i->mode_set) {
796 if (S_ISLNK(st->st_mode))
797 log_debug("Skipping mode fix for symlink %s.", path);
798 else {
799 mode_t m = i->mode;
800
801 if (i->mask_perms) {
802 if (!(st->st_mode & 0111))
803 m &= ~0111;
804 if (!(st->st_mode & 0222))
805 m &= ~0222;
806 if (!(st->st_mode & 0444))
807 m &= ~0444;
808 if (!S_ISDIR(st->st_mode))
809 m &= ~07000; /* remove sticky/sgid/suid bit, unless directory */
810 }
811
812 if (m == (st->st_mode & 07777))
813 log_debug("\"%s\" has correct mode %o already.", path, st->st_mode);
814 else {
815 log_debug("Changing \"%s\" to mode %o.", path, m);
816 if (fchmod_opath(fd, m) < 0)
817 return log_error_errno(errno, "fchmod() of %s failed: %m", path);
818 }
819 }
820 }
821
822 if ((i->uid_set && i->uid != st->st_uid) ||
823 (i->gid_set && i->gid != st->st_gid)) {
824 log_debug("Changing \"%s\" to owner "UID_FMT":"GID_FMT,
825 path,
826 i->uid_set ? i->uid : UID_INVALID,
827 i->gid_set ? i->gid : GID_INVALID);
828
829 if (fchownat(fd,
830 "",
831 i->uid_set ? i->uid : UID_INVALID,
832 i->gid_set ? i->gid : GID_INVALID,
833 AT_EMPTY_PATH) < 0)
834 return log_error_errno(errno, "fchownat() of %s failed: %m", path);
835 }
836
837 shortcut:
838 return label_fix(path, 0);
839 }
840
841 static int path_set_perms(Item *i, const char *path) {
842 _cleanup_close_ int fd = -1;
843 struct stat st;
844
845 assert(i);
846 assert(path);
847
848 fd = open(path, O_NOFOLLOW|O_CLOEXEC|O_PATH);
849 if (fd < 0) {
850 int level = LOG_ERR, r = -errno;
851
852 /* Option "e" operates only on existing objects. Do not
853 * print errors about non-existent files or directories */
854 if (i->type == EMPTY_DIRECTORY && errno == ENOENT) {
855 level = LOG_DEBUG;
856 r = 0;
857 }
858
859 log_full_errno(level, errno, "Adjusting owner and mode for %s failed: %m", path);
860 return r;
861 }
862
863 if (fstat(fd, &st) < 0)
864 return log_error_errno(errno, "Failed to fstat() file %s: %m", path);
865
866 if (i->type == EMPTY_DIRECTORY && !S_ISDIR(st.st_mode))
867 return log_error_errno(EEXIST, "'%s' already exists and is not a directory. ", path);
868
869 return fd_set_perms(i, fd, &st);
870 }
871
872 static int parse_xattrs_from_arg(Item *i) {
873 const char *p;
874 int r;
875
876 assert(i);
877 assert(i->argument);
878
879 p = i->argument;
880
881 for (;;) {
882 _cleanup_free_ char *name = NULL, *value = NULL, *xattr = NULL;
883
884 r = extract_first_word(&p, &xattr, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE);
885 if (r < 0)
886 log_warning_errno(r, "Failed to parse extended attribute '%s', ignoring: %m", p);
887 if (r <= 0)
888 break;
889
890 r = split_pair(xattr, "=", &name, &value);
891 if (r < 0) {
892 log_warning_errno(r, "Failed to parse extended attribute, ignoring: %s", xattr);
893 continue;
894 }
895
896 if (isempty(name) || isempty(value)) {
897 log_warning("Malformed extended attribute found, ignoring: %s", xattr);
898 continue;
899 }
900
901 if (strv_push_pair(&i->xattrs, name, value) < 0)
902 return log_oom();
903
904 name = value = NULL;
905 }
906
907 return 0;
908 }
909
910 static int fd_set_xattrs(Item *i, int fd, const struct stat *st) {
911 char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
912 _cleanup_free_ char *path = NULL;
913 char **name, **value;
914 int r;
915
916 assert(i);
917 assert(fd);
918
919 r = fd_get_path(fd, &path);
920 if (r < 0)
921 return r;
922
923 xsprintf(procfs_path, "/proc/self/fd/%i", fd);
924
925 STRV_FOREACH_PAIR(name, value, i->xattrs) {
926 log_debug("Setting extended attribute '%s=%s' on %s.", *name, *value, path);
927 if (setxattr(procfs_path, *name, *value, strlen(*value), 0) < 0)
928 return log_error_errno(errno, "Setting extended attribute %s=%s on %s failed: %m",
929 *name, *value, path);
930 }
931 return 0;
932 }
933
934 static int path_set_xattrs(Item *i, const char *path) {
935 _cleanup_close_ int fd = -1;
936
937 assert(i);
938 assert(path);
939
940 fd = open(path, O_CLOEXEC|O_NOFOLLOW|O_PATH);
941 if (fd < 0)
942 return log_error_errno(errno, "Cannot open '%s': %m", path);
943
944 return fd_set_xattrs(i, fd, NULL);
945 }
946
947 static int parse_acls_from_arg(Item *item) {
948 #if HAVE_ACL
949 int r;
950
951 assert(item);
952
953 /* If force (= modify) is set, we will not modify the acl
954 * afterwards, so the mask can be added now if necessary. */
955
956 r = parse_acl(item->argument, &item->acl_access, &item->acl_default, !item->force);
957 if (r < 0)
958 log_warning_errno(r, "Failed to parse ACL \"%s\": %m. Ignoring", item->argument);
959 #else
960 log_warning_errno(ENOSYS, "ACLs are not supported. Ignoring");
961 #endif
962
963 return 0;
964 }
965
966 #if HAVE_ACL
967 static int path_set_acl(const char *path, const char *pretty, acl_type_t type, acl_t acl, bool modify) {
968 _cleanup_(acl_free_charpp) char *t = NULL;
969 _cleanup_(acl_freep) acl_t dup = NULL;
970 int r;
971
972 /* Returns 0 for success, positive error if already warned,
973 * negative error otherwise. */
974
975 if (modify) {
976 r = acls_for_file(path, type, acl, &dup);
977 if (r < 0)
978 return r;
979
980 r = calc_acl_mask_if_needed(&dup);
981 if (r < 0)
982 return r;
983 } else {
984 dup = acl_dup(acl);
985 if (!dup)
986 return -errno;
987
988 /* the mask was already added earlier if needed */
989 }
990
991 r = add_base_acls_if_needed(&dup, path);
992 if (r < 0)
993 return r;
994
995 t = acl_to_any_text(dup, NULL, ',', TEXT_ABBREVIATE);
996 log_debug("Setting %s ACL %s on %s.",
997 type == ACL_TYPE_ACCESS ? "access" : "default",
998 strna(t), pretty);
999
1000 r = acl_set_file(path, type, dup);
1001 if (r < 0)
1002 /* Return positive to indicate we already warned */
1003 return -log_error_errno(errno,
1004 "Setting %s ACL \"%s\" on %s failed: %m",
1005 type == ACL_TYPE_ACCESS ? "access" : "default",
1006 strna(t), pretty);
1007
1008 return 0;
1009 }
1010 #endif
1011
1012 static int fd_set_acls(Item *item, int fd, const struct stat *st) {
1013 int r = 0;
1014 #if HAVE_ACL
1015 char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
1016 _cleanup_free_ char *path = NULL;
1017
1018 assert(item);
1019 assert(fd);
1020 assert(st);
1021
1022 r = fd_get_path(fd, &path);
1023 if (r < 0)
1024 return r;
1025
1026 if (hardlink_vulnerable(st)) {
1027 log_error("Refusing to set ACLs on hardlinked file %s while the fs.protected_hardlinks sysctl is turned off.", path);
1028 return -EPERM;
1029 }
1030
1031 if (S_ISLNK(st->st_mode)) {
1032 log_debug("Skipping ACL fix for symlink %s.", path);
1033 return 0;
1034 }
1035
1036 xsprintf(procfs_path, "/proc/self/fd/%i", fd);
1037
1038 if (item->acl_access)
1039 r = path_set_acl(procfs_path, path, ACL_TYPE_ACCESS, item->acl_access, item->force);
1040
1041 if (r == 0 && item->acl_default)
1042 r = path_set_acl(procfs_path, path, ACL_TYPE_DEFAULT, item->acl_default, item->force);
1043
1044 if (r > 0)
1045 return -r; /* already warned */
1046 if (r == -EOPNOTSUPP) {
1047 log_debug_errno(r, "ACLs not supported by file system at %s", path);
1048 return 0;
1049 }
1050 if (r < 0)
1051 return log_error_errno(r, "ACL operation on \"%s\" failed: %m", path);
1052 #endif
1053 return r;
1054 }
1055
1056 static int path_set_acls(Item *item, const char *path) {
1057 int r = 0;
1058 #ifdef HAVE_ACL
1059 _cleanup_close_ int fd = -1;
1060 struct stat st;
1061
1062 assert(item);
1063 assert(path);
1064
1065 fd = open(path, O_NOFOLLOW|O_CLOEXEC|O_PATH);
1066 if (fd < 0)
1067 return log_error_errno(errno, "Adjusting ACL of %s failed: %m", path);
1068
1069 if (fstat(fd, &st) < 0)
1070 return log_error_errno(errno, "Failed to fstat() file %s: %m", path);
1071
1072 r = fd_set_acls(item, fd, &st);
1073 #endif
1074 return r;
1075 }
1076
1077 #define ATTRIBUTES_ALL \
1078 (FS_NOATIME_FL | \
1079 FS_SYNC_FL | \
1080 FS_DIRSYNC_FL | \
1081 FS_APPEND_FL | \
1082 FS_COMPR_FL | \
1083 FS_NODUMP_FL | \
1084 FS_EXTENT_FL | \
1085 FS_IMMUTABLE_FL | \
1086 FS_JOURNAL_DATA_FL | \
1087 FS_SECRM_FL | \
1088 FS_UNRM_FL | \
1089 FS_NOTAIL_FL | \
1090 FS_TOPDIR_FL | \
1091 FS_NOCOW_FL)
1092
1093 static int parse_attribute_from_arg(Item *item) {
1094
1095 static const struct {
1096 char character;
1097 unsigned value;
1098 } attributes[] = {
1099 { 'A', FS_NOATIME_FL }, /* do not update atime */
1100 { 'S', FS_SYNC_FL }, /* Synchronous updates */
1101 { 'D', FS_DIRSYNC_FL }, /* dirsync behaviour (directories only) */
1102 { 'a', FS_APPEND_FL }, /* writes to file may only append */
1103 { 'c', FS_COMPR_FL }, /* Compress file */
1104 { 'd', FS_NODUMP_FL }, /* do not dump file */
1105 { 'e', FS_EXTENT_FL }, /* Extents */
1106 { 'i', FS_IMMUTABLE_FL }, /* Immutable file */
1107 { 'j', FS_JOURNAL_DATA_FL }, /* Reserved for ext3 */
1108 { 's', FS_SECRM_FL }, /* Secure deletion */
1109 { 'u', FS_UNRM_FL }, /* Undelete */
1110 { 't', FS_NOTAIL_FL }, /* file tail should not be merged */
1111 { 'T', FS_TOPDIR_FL }, /* Top of directory hierarchies */
1112 { 'C', FS_NOCOW_FL }, /* Do not cow file */
1113 };
1114
1115 enum {
1116 MODE_ADD,
1117 MODE_DEL,
1118 MODE_SET
1119 } mode = MODE_ADD;
1120
1121 unsigned value = 0, mask = 0;
1122 const char *p;
1123
1124 assert(item);
1125
1126 p = item->argument;
1127 if (p) {
1128 if (*p == '+') {
1129 mode = MODE_ADD;
1130 p++;
1131 } else if (*p == '-') {
1132 mode = MODE_DEL;
1133 p++;
1134 } else if (*p == '=') {
1135 mode = MODE_SET;
1136 p++;
1137 }
1138 }
1139
1140 if (isempty(p) && mode != MODE_SET) {
1141 log_error("Setting file attribute on '%s' needs an attribute specification.", item->path);
1142 return -EINVAL;
1143 }
1144
1145 for (; p && *p ; p++) {
1146 unsigned i, v;
1147
1148 for (i = 0; i < ELEMENTSOF(attributes); i++)
1149 if (*p == attributes[i].character)
1150 break;
1151
1152 if (i >= ELEMENTSOF(attributes)) {
1153 log_error("Unknown file attribute '%c' on '%s'.", *p, item->path);
1154 return -EINVAL;
1155 }
1156
1157 v = attributes[i].value;
1158
1159 SET_FLAG(value, v, IN_SET(mode, MODE_ADD, MODE_SET));
1160
1161 mask |= v;
1162 }
1163
1164 if (mode == MODE_SET)
1165 mask |= ATTRIBUTES_ALL;
1166
1167 assert(mask != 0);
1168
1169 item->attribute_mask = mask;
1170 item->attribute_value = value;
1171 item->attribute_set = true;
1172
1173 return 0;
1174 }
1175
1176 static int fd_set_attribute(Item *item, int fd, const struct stat *st) {
1177 _cleanup_close_ int procfs_fd = -1;
1178 _cleanup_free_ char *path = NULL;
1179 unsigned f;
1180 int r;
1181
1182 if (!item->attribute_set || item->attribute_mask == 0)
1183 return 0;
1184
1185 r = fd_get_path(fd, &path);
1186 if (r < 0)
1187 return r;
1188
1189 /* Issuing the file attribute ioctls on device nodes is not
1190 * safe, as that will be delivered to the drivers, not the
1191 * file system containing the device node. */
1192 if (!S_ISREG(st->st_mode) && !S_ISDIR(st->st_mode)) {
1193 log_error("Setting file flags is only supported on regular files and directories, cannot set on '%s'.", path);
1194 return -EINVAL;
1195 }
1196
1197 f = item->attribute_value & item->attribute_mask;
1198
1199 /* Mask away directory-specific flags */
1200 if (!S_ISDIR(st->st_mode))
1201 f &= ~FS_DIRSYNC_FL;
1202
1203 procfs_fd = fd_reopen(fd, O_RDONLY|O_CLOEXEC|O_NOATIME);
1204 if (procfs_fd < 0)
1205 return -errno;
1206
1207 r = chattr_fd(procfs_fd, f, item->attribute_mask);
1208 if (r < 0)
1209 log_full_errno(IN_SET(r, -ENOTTY, -EOPNOTSUPP) ? LOG_DEBUG : LOG_WARNING,
1210 r,
1211 "Cannot set file attribute for '%s', value=0x%08x, mask=0x%08x: %m",
1212 path, item->attribute_value, item->attribute_mask);
1213
1214 return 0;
1215 }
1216
1217 static int path_set_attribute(Item *item, const char *path) {
1218 _cleanup_close_ int fd = -1;
1219 struct stat st;
1220
1221 if (!item->attribute_set || item->attribute_mask == 0)
1222 return 0;
1223
1224 fd = open(path, O_CLOEXEC|O_NOFOLLOW|O_PATH);
1225 if (fd < 0)
1226 return log_error_errno(errno, "Cannot open '%s': %m", path);
1227
1228 if (fstat(fd, &st) < 0)
1229 return log_error_errno(errno, "Cannot stat '%s': %m", path);
1230
1231 return fd_set_attribute(item, fd, &st);
1232 }
1233
1234 static int write_one_file(Item *i, const char *path) {
1235 _cleanup_close_ int fd = -1;
1236 int flags, r = 0;
1237 struct stat st;
1238
1239 assert(i);
1240 assert(path);
1241
1242 flags = i->type == CREATE_FILE ? O_CREAT|O_EXCL|O_NOFOLLOW :
1243 i->type == TRUNCATE_FILE ? O_CREAT|O_TRUNC|O_NOFOLLOW : 0;
1244
1245 RUN_WITH_UMASK(0000) {
1246 mac_selinux_create_file_prepare(path, S_IFREG);
1247 fd = open(path, flags|O_NONBLOCK|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode);
1248 mac_selinux_create_file_clear();
1249 }
1250
1251 if (fd < 0) {
1252 if (i->type == WRITE_FILE && errno == ENOENT) {
1253 log_debug_errno(errno, "Not writing missing file \"%s\": %m", path);
1254 return 0;
1255 }
1256 if (i->type == CREATE_FILE && errno == EEXIST) {
1257 log_debug_errno(errno, "Not writing to pre-existing file \"%s\": %m", path);
1258 goto done;
1259 }
1260
1261 r = -errno;
1262 if (!i->argument && errno == EROFS && stat(path, &st) == 0 &&
1263 (i->type == CREATE_FILE || st.st_size == 0))
1264 goto check_mode;
1265
1266 return log_error_errno(r, "Failed to create file %s: %m", path);
1267 }
1268
1269 if (i->argument) {
1270 log_debug("%s to \"%s\".", i->type == CREATE_FILE ? "Appending" : "Writing", path);
1271
1272 r = loop_write(fd, i->argument, strlen(i->argument), false);
1273 if (r < 0)
1274 return log_error_errno(r, "Failed to write file \"%s\": %m", path);
1275 } else
1276 log_debug("\"%s\" has been created.", path);
1277
1278 fd = safe_close(fd);
1279
1280 done:
1281 if (stat(path, &st) < 0)
1282 return log_error_errno(errno, "stat(%s) failed: %m", path);
1283
1284 check_mode:
1285 if (!S_ISREG(st.st_mode)) {
1286 log_error("%s is not a file.", path);
1287 return -EEXIST;
1288 }
1289
1290 r = path_set_perms(i, path);
1291 if (r < 0)
1292 return r;
1293
1294 return 0;
1295 }
1296
1297 typedef int (*action_t)(Item *, const char *);
1298 typedef int (*fdaction_t)(Item *, int fd, const struct stat *st);
1299
1300 static int item_do(Item *i, int fd, const struct stat *st, fdaction_t action) {
1301 int r = 0, q;
1302
1303 assert(i);
1304 assert(fd >= 0);
1305 assert(st);
1306
1307 /* This returns the first error we run into, but nevertheless
1308 * tries to go on */
1309 r = action(i, fd, st);
1310
1311 if (S_ISDIR(st->st_mode)) {
1312 char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
1313 _cleanup_closedir_ DIR *d = NULL;
1314 struct dirent *de;
1315
1316 /* The passed 'fd' was opened with O_PATH. We need to convert
1317 * it into a 'regular' fd before reading the directory content. */
1318 xsprintf(procfs_path, "/proc/self/fd/%i", fd);
1319
1320 d = opendir(procfs_path);
1321 if (!d) {
1322 r = r ?: -errno;
1323 goto finish;
1324 }
1325
1326 FOREACH_DIRENT_ALL(de, d, q = -errno; goto finish) {
1327 struct stat de_st;
1328 int de_fd;
1329
1330 if (dot_or_dot_dot(de->d_name))
1331 continue;
1332
1333 de_fd = openat(fd, de->d_name, O_NOFOLLOW|O_CLOEXEC|O_PATH);
1334 if (de_fd >= 0 && fstat(de_fd, &de_st) >= 0)
1335 /* pass ownership of dirent fd over */
1336 q = item_do(i, de_fd, &de_st, action);
1337 else
1338 q = -errno;
1339
1340 if (q < 0 && r == 0)
1341 r = q;
1342 }
1343 }
1344 finish:
1345 safe_close(fd);
1346 return r;
1347 }
1348
1349 static int glob_item(Item *i, action_t action) {
1350 _cleanup_globfree_ glob_t g = {
1351 .gl_opendir = (void *(*)(const char *)) opendir_nomod,
1352 };
1353 int r = 0, k;
1354 char **fn;
1355
1356 k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g);
1357 if (k < 0 && k != -ENOENT)
1358 return log_error_errno(k, "glob(%s) failed: %m", i->path);
1359
1360 STRV_FOREACH(fn, g.gl_pathv) {
1361 k = action(i, *fn);
1362 if (k < 0 && r == 0)
1363 r = k;
1364 }
1365
1366 return r;
1367 }
1368
1369 static int glob_item_recursively(Item *i, fdaction_t action) {
1370 _cleanup_globfree_ glob_t g = {
1371 .gl_opendir = (void *(*)(const char *)) opendir_nomod,
1372 };
1373 int r = 0, k;
1374 char **fn;
1375
1376 k = safe_glob(i->path, GLOB_NOSORT|GLOB_BRACE, &g);
1377 if (k < 0 && k != -ENOENT)
1378 return log_error_errno(k, "glob(%s) failed: %m", i->path);
1379
1380 STRV_FOREACH(fn, g.gl_pathv) {
1381 _cleanup_close_ int fd = -1;
1382 struct stat st;
1383
1384 /* Make sure we won't trigger/follow file object (such as
1385 * device nodes, automounts, ...) pointed out by 'fn' with
1386 * O_PATH. Note, when O_PATH is used, flags other than
1387 * O_CLOEXEC, O_DIRECTORY, and O_NOFOLLOW are ignored. */
1388
1389 fd = open(*fn, O_CLOEXEC|O_NOFOLLOW|O_PATH);
1390 if (fd < 0) {
1391 r = r ?: -errno;
1392 continue;
1393 }
1394
1395 if (fstat(fd, &st) < 0) {
1396 r = r ?: -errno;
1397 continue;
1398 }
1399
1400 k = item_do(i, fd, &st, action);
1401 if (k < 0 && r == 0)
1402 r = k;
1403
1404 /* we passed fd ownership to the previous call */
1405 fd = -1;
1406 }
1407
1408 return r;
1409 }
1410
1411 typedef enum {
1412 CREATION_NORMAL,
1413 CREATION_EXISTING,
1414 CREATION_FORCE,
1415 _CREATION_MODE_MAX,
1416 _CREATION_MODE_INVALID = -1
1417 } CreationMode;
1418
1419 static const char *creation_mode_verb_table[_CREATION_MODE_MAX] = {
1420 [CREATION_NORMAL] = "Created",
1421 [CREATION_EXISTING] = "Found existing",
1422 [CREATION_FORCE] = "Created replacement",
1423 };
1424
1425 DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb, CreationMode);
1426
1427 static int create_item(Item *i) {
1428 struct stat st;
1429 int r = 0;
1430 int q = 0;
1431 CreationMode creation;
1432
1433 assert(i);
1434
1435 log_debug("Running create action for entry %c %s", (char) i->type, i->path);
1436
1437 switch (i->type) {
1438
1439 case IGNORE_PATH:
1440 case IGNORE_DIRECTORY_PATH:
1441 case REMOVE_PATH:
1442 case RECURSIVE_REMOVE_PATH:
1443 return 0;
1444
1445 case CREATE_FILE:
1446 case TRUNCATE_FILE:
1447 RUN_WITH_UMASK(0000)
1448 (void) mkdir_parents_label(i->path, 0755);
1449
1450 r = write_one_file(i, i->path);
1451 if (r < 0)
1452 return r;
1453 break;
1454
1455 case COPY_FILES:
1456 RUN_WITH_UMASK(0000)
1457 (void) mkdir_parents_label(i->path, 0755);
1458
1459 log_debug("Copying tree \"%s\" to \"%s\".", i->argument, i->path);
1460 r = copy_tree(i->argument, i->path,
1461 i->uid_set ? i->uid : UID_INVALID,
1462 i->gid_set ? i->gid : GID_INVALID,
1463 COPY_REFLINK);
1464
1465 if (r == -EROFS && stat(i->path, &st) == 0)
1466 r = -EEXIST;
1467
1468 if (r < 0) {
1469 struct stat a, b;
1470
1471 if (r != -EEXIST)
1472 return log_error_errno(r, "Failed to copy files to %s: %m", i->path);
1473
1474 if (stat(i->argument, &a) < 0)
1475 return log_error_errno(errno, "stat(%s) failed: %m", i->argument);
1476
1477 if (stat(i->path, &b) < 0)
1478 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1479
1480 if ((a.st_mode ^ b.st_mode) & S_IFMT) {
1481 log_debug("Can't copy to %s, file exists already and is of different type", i->path);
1482 return 0;
1483 }
1484 }
1485
1486 r = path_set_perms(i, i->path);
1487 if (r < 0)
1488 return r;
1489
1490 break;
1491
1492 case WRITE_FILE:
1493 r = glob_item(i, write_one_file);
1494 if (r < 0)
1495 return r;
1496
1497 break;
1498
1499 case CREATE_DIRECTORY:
1500 case TRUNCATE_DIRECTORY:
1501 case CREATE_SUBVOLUME:
1502 case CREATE_SUBVOLUME_INHERIT_QUOTA:
1503 case CREATE_SUBVOLUME_NEW_QUOTA:
1504 RUN_WITH_UMASK(0000)
1505 (void) mkdir_parents_label(i->path, 0755);
1506
1507 if (IN_SET(i->type, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA)) {
1508
1509 if (btrfs_is_subvol(empty_to_root(arg_root)) <= 0)
1510
1511 /* Don't create a subvolume unless the
1512 * root directory is one, too. We do
1513 * this under the assumption that if
1514 * the root directory is just a plain
1515 * directory (i.e. very light-weight),
1516 * we shouldn't try to split it up
1517 * into subvolumes (i.e. more
1518 * heavy-weight). Thus, chroot()
1519 * environments and suchlike will get
1520 * a full brtfs subvolume set up below
1521 * their tree only if they
1522 * specifically set up a btrfs
1523 * subvolume for the root dir too. */
1524
1525 r = -ENOTTY;
1526 else {
1527 RUN_WITH_UMASK((~i->mode) & 0777)
1528 r = btrfs_subvol_make(i->path);
1529 }
1530 } else
1531 r = 0;
1532
1533 if (IN_SET(i->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY) || r == -ENOTTY)
1534 RUN_WITH_UMASK(0000)
1535 r = mkdir_label(i->path, i->mode);
1536
1537 if (r < 0) {
1538 int k;
1539
1540 if (!IN_SET(r, -EEXIST, -EROFS))
1541 return log_error_errno(r, "Failed to create directory or subvolume \"%s\": %m", i->path);
1542
1543 k = is_dir(i->path, false);
1544 if (k == -ENOENT && r == -EROFS)
1545 return log_error_errno(r, "%s does not exist and cannot be created as the file system is read-only.", i->path);
1546 if (k < 0)
1547 return log_error_errno(k, "Failed to check if %s exists: %m", i->path);
1548 if (!k) {
1549 log_warning("\"%s\" already exists and is not a directory.", i->path);
1550 return 0;
1551 }
1552
1553 creation = CREATION_EXISTING;
1554 } else
1555 creation = CREATION_NORMAL;
1556
1557 log_debug("%s directory \"%s\".", creation_mode_verb_to_string(creation), i->path);
1558
1559 if (IN_SET(i->type, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)) {
1560 r = btrfs_subvol_auto_qgroup(i->path, 0, i->type == CREATE_SUBVOLUME_NEW_QUOTA);
1561 if (r == -ENOTTY)
1562 log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (unsupported fs or dir not a subvolume): %m", i->path);
1563 else if (r == -EROFS)
1564 log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (fs is read-only).", i->path);
1565 else if (r == -ENOPROTOOPT)
1566 log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (quota support is disabled).", i->path);
1567 else if (r < 0)
1568 q = log_error_errno(r, "Failed to adjust quota for subvolume \"%s\": %m", i->path);
1569 else if (r > 0)
1570 log_debug("Adjusted quota for subvolume \"%s\".", i->path);
1571 else if (r == 0)
1572 log_debug("Quota for subvolume \"%s\" already in place, no change made.", i->path);
1573 }
1574
1575 _fallthrough_;
1576 case EMPTY_DIRECTORY:
1577 r = glob_item(i, path_set_perms);
1578 if (q < 0)
1579 return q;
1580 if (r < 0)
1581 return r;
1582
1583 break;
1584
1585 case CREATE_FIFO:
1586 RUN_WITH_UMASK(0000) {
1587 (void) mkdir_parents_label(i->path, 0755);
1588
1589 mac_selinux_create_file_prepare(i->path, S_IFIFO);
1590 r = mkfifo(i->path, i->mode);
1591 mac_selinux_create_file_clear();
1592 }
1593
1594 if (r < 0) {
1595 if (errno != EEXIST)
1596 return log_error_errno(errno, "Failed to create fifo %s: %m", i->path);
1597
1598 if (lstat(i->path, &st) < 0)
1599 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1600
1601 if (!S_ISFIFO(st.st_mode)) {
1602
1603 if (i->force) {
1604 RUN_WITH_UMASK(0000) {
1605 mac_selinux_create_file_prepare(i->path, S_IFIFO);
1606 r = mkfifo_atomic(i->path, i->mode);
1607 mac_selinux_create_file_clear();
1608 }
1609
1610 if (r < 0)
1611 return log_error_errno(r, "Failed to create fifo %s: %m", i->path);
1612 creation = CREATION_FORCE;
1613 } else {
1614 log_warning("\"%s\" already exists and is not a fifo.", i->path);
1615 return 0;
1616 }
1617 } else
1618 creation = CREATION_EXISTING;
1619 } else
1620 creation = CREATION_NORMAL;
1621 log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation), i->path);
1622
1623 r = path_set_perms(i, i->path);
1624 if (r < 0)
1625 return r;
1626
1627 break;
1628
1629 case CREATE_SYMLINK: {
1630 RUN_WITH_UMASK(0000)
1631 (void) mkdir_parents_label(i->path, 0755);
1632
1633 mac_selinux_create_file_prepare(i->path, S_IFLNK);
1634 r = symlink(i->argument, i->path);
1635 mac_selinux_create_file_clear();
1636
1637 if (r < 0) {
1638 _cleanup_free_ char *x = NULL;
1639
1640 if (errno != EEXIST)
1641 return log_error_errno(errno, "symlink(%s, %s) failed: %m", i->argument, i->path);
1642
1643 r = readlink_malloc(i->path, &x);
1644 if (r < 0 || !streq(i->argument, x)) {
1645
1646 if (i->force) {
1647 mac_selinux_create_file_prepare(i->path, S_IFLNK);
1648 r = symlink_atomic(i->argument, i->path);
1649 mac_selinux_create_file_clear();
1650
1651 if (IN_SET(r, -EISDIR, -EEXIST, -ENOTEMPTY)) {
1652 r = rm_rf(i->path, REMOVE_ROOT|REMOVE_PHYSICAL);
1653 if (r < 0)
1654 return log_error_errno(r, "rm -fr %s failed: %m", i->path);
1655
1656 mac_selinux_create_file_prepare(i->path, S_IFLNK);
1657 r = symlink(i->argument, i->path) < 0 ? -errno : 0;
1658 mac_selinux_create_file_clear();
1659 }
1660 if (r < 0)
1661 return log_error_errno(r, "symlink(%s, %s) failed: %m", i->argument, i->path);
1662
1663 creation = CREATION_FORCE;
1664 } else {
1665 log_debug("\"%s\" is not a symlink or does not point to the correct path.", i->path);
1666 return 0;
1667 }
1668 } else
1669 creation = CREATION_EXISTING;
1670 } else
1671
1672 creation = CREATION_NORMAL;
1673 log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation), i->path);
1674 break;
1675 }
1676
1677 case CREATE_BLOCK_DEVICE:
1678 case CREATE_CHAR_DEVICE: {
1679 mode_t file_type;
1680
1681 if (have_effective_cap(CAP_MKNOD) == 0) {
1682 /* In a container we lack CAP_MKNOD. We
1683 shouldn't attempt to create the device node in
1684 that case to avoid noise, and we don't support
1685 virtualized devices in containers anyway. */
1686
1687 log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path);
1688 return 0;
1689 }
1690
1691 RUN_WITH_UMASK(0000)
1692 (void) mkdir_parents_label(i->path, 0755);
1693
1694 file_type = i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR;
1695
1696 RUN_WITH_UMASK(0000) {
1697 mac_selinux_create_file_prepare(i->path, file_type);
1698 r = mknod(i->path, i->mode | file_type, i->major_minor);
1699 mac_selinux_create_file_clear();
1700 }
1701
1702 if (r < 0) {
1703 if (errno == EPERM) {
1704 log_debug("We lack permissions, possibly because of cgroup configuration; "
1705 "skipping creation of device node %s.", i->path);
1706 return 0;
1707 }
1708
1709 if (errno != EEXIST)
1710 return log_error_errno(errno, "Failed to create device node %s: %m", i->path);
1711
1712 if (lstat(i->path, &st) < 0)
1713 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1714
1715 if ((st.st_mode & S_IFMT) != file_type) {
1716
1717 if (i->force) {
1718
1719 RUN_WITH_UMASK(0000) {
1720 mac_selinux_create_file_prepare(i->path, file_type);
1721 r = mknod_atomic(i->path, i->mode | file_type, i->major_minor);
1722 mac_selinux_create_file_clear();
1723 }
1724
1725 if (r < 0)
1726 return log_error_errno(r, "Failed to create device node \"%s\": %m", i->path);
1727 creation = CREATION_FORCE;
1728 } else {
1729 log_debug("%s is not a device node.", i->path);
1730 return 0;
1731 }
1732 } else
1733 creation = CREATION_EXISTING;
1734 } else
1735 creation = CREATION_NORMAL;
1736
1737 log_debug("%s %s device node \"%s\" %u:%u.",
1738 creation_mode_verb_to_string(creation),
1739 i->type == CREATE_BLOCK_DEVICE ? "block" : "char",
1740 i->path, major(i->mode), minor(i->mode));
1741
1742 r = path_set_perms(i, i->path);
1743 if (r < 0)
1744 return r;
1745
1746 break;
1747 }
1748
1749 case ADJUST_MODE:
1750 case RELABEL_PATH:
1751 r = glob_item(i, path_set_perms);
1752 if (r < 0)
1753 return r;
1754 break;
1755
1756 case RECURSIVE_RELABEL_PATH:
1757 r = glob_item_recursively(i, fd_set_perms);
1758 if (r < 0)
1759 return r;
1760 break;
1761
1762 case SET_XATTR:
1763 r = glob_item(i, path_set_xattrs);
1764 if (r < 0)
1765 return r;
1766 break;
1767
1768 case RECURSIVE_SET_XATTR:
1769 r = glob_item_recursively(i, fd_set_xattrs);
1770 if (r < 0)
1771 return r;
1772 break;
1773
1774 case SET_ACL:
1775 r = glob_item(i, path_set_acls);
1776 if (r < 0)
1777 return r;
1778 break;
1779
1780 case RECURSIVE_SET_ACL:
1781 r = glob_item_recursively(i, fd_set_acls);
1782 if (r < 0)
1783 return r;
1784 break;
1785
1786 case SET_ATTRIBUTE:
1787 r = glob_item(i, path_set_attribute);
1788 if (r < 0)
1789 return r;
1790 break;
1791
1792 case RECURSIVE_SET_ATTRIBUTE:
1793 r = glob_item_recursively(i, fd_set_attribute);
1794 if (r < 0)
1795 return r;
1796 break;
1797 }
1798
1799 return 0;
1800 }
1801
1802 static int remove_item_instance(Item *i, const char *instance) {
1803 int r;
1804
1805 assert(i);
1806
1807 switch (i->type) {
1808
1809 case REMOVE_PATH:
1810 if (remove(instance) < 0 && errno != ENOENT)
1811 return log_error_errno(errno, "rm(%s): %m", instance);
1812
1813 break;
1814
1815 case TRUNCATE_DIRECTORY:
1816 case RECURSIVE_REMOVE_PATH:
1817 /* FIXME: we probably should use dir_cleanup() here
1818 * instead of rm_rf() so that 'x' is honoured. */
1819 log_debug("rm -rf \"%s\"", instance);
1820 r = rm_rf(instance, (i->type == RECURSIVE_REMOVE_PATH ? REMOVE_ROOT|REMOVE_SUBVOLUME : 0) | REMOVE_PHYSICAL);
1821 if (r < 0 && r != -ENOENT)
1822 return log_error_errno(r, "rm_rf(%s): %m", instance);
1823
1824 break;
1825
1826 default:
1827 assert_not_reached("wut?");
1828 }
1829
1830 return 0;
1831 }
1832
1833 static int remove_item(Item *i) {
1834 assert(i);
1835
1836 log_debug("Running remove action for entry %c %s", (char) i->type, i->path);
1837
1838 switch (i->type) {
1839
1840 case REMOVE_PATH:
1841 case TRUNCATE_DIRECTORY:
1842 case RECURSIVE_REMOVE_PATH:
1843 return glob_item(i, remove_item_instance);
1844
1845 default:
1846 return 0;
1847 }
1848 }
1849
1850 static int clean_item_instance(Item *i, const char* instance) {
1851 _cleanup_closedir_ DIR *d = NULL;
1852 struct stat s, ps;
1853 bool mountpoint;
1854 usec_t cutoff, n;
1855 char timestamp[FORMAT_TIMESTAMP_MAX];
1856
1857 assert(i);
1858
1859 if (!i->age_set)
1860 return 0;
1861
1862 n = now(CLOCK_REALTIME);
1863 if (n < i->age)
1864 return 0;
1865
1866 cutoff = n - i->age;
1867
1868 d = opendir_nomod(instance);
1869 if (!d) {
1870 if (IN_SET(errno, ENOENT, ENOTDIR)) {
1871 log_debug_errno(errno, "Directory \"%s\": %m", instance);
1872 return 0;
1873 }
1874
1875 return log_error_errno(errno, "Failed to open directory %s: %m", instance);
1876 }
1877
1878 if (fstat(dirfd(d), &s) < 0)
1879 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1880
1881 if (!S_ISDIR(s.st_mode)) {
1882 log_error("%s is not a directory.", i->path);
1883 return -ENOTDIR;
1884 }
1885
1886 if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0)
1887 return log_error_errno(errno, "stat(%s/..) failed: %m", i->path);
1888
1889 mountpoint = s.st_dev != ps.st_dev || s.st_ino == ps.st_ino;
1890
1891 log_debug("Cleanup threshold for %s \"%s\" is %s",
1892 mountpoint ? "mount point" : "directory",
1893 instance,
1894 format_timestamp_us(timestamp, sizeof(timestamp), cutoff));
1895
1896 return dir_cleanup(i, instance, d, &s, cutoff, s.st_dev, mountpoint,
1897 MAX_DEPTH, i->keep_first_level);
1898 }
1899
1900 static int clean_item(Item *i) {
1901 assert(i);
1902
1903 log_debug("Running clean action for entry %c %s", (char) i->type, i->path);
1904
1905 switch (i->type) {
1906 case CREATE_DIRECTORY:
1907 case CREATE_SUBVOLUME:
1908 case CREATE_SUBVOLUME_INHERIT_QUOTA:
1909 case CREATE_SUBVOLUME_NEW_QUOTA:
1910 case TRUNCATE_DIRECTORY:
1911 case IGNORE_PATH:
1912 case COPY_FILES:
1913 clean_item_instance(i, i->path);
1914 return 0;
1915 case EMPTY_DIRECTORY:
1916 case IGNORE_DIRECTORY_PATH:
1917 return glob_item(i, clean_item_instance);
1918 default:
1919 return 0;
1920 }
1921 }
1922
1923 static int process_item_array(ItemArray *array);
1924
1925 static int process_item(Item *i) {
1926 int r, q, p, t = 0;
1927 _cleanup_free_ char *prefix = NULL;
1928
1929 assert(i);
1930
1931 if (i->done)
1932 return 0;
1933
1934 i->done = true;
1935
1936 prefix = malloc(strlen(i->path) + 1);
1937 if (!prefix)
1938 return log_oom();
1939
1940 PATH_FOREACH_PREFIX(prefix, i->path) {
1941 ItemArray *j;
1942
1943 j = ordered_hashmap_get(items, prefix);
1944 if (j) {
1945 int s;
1946
1947 s = process_item_array(j);
1948 if (s < 0 && t == 0)
1949 t = s;
1950 }
1951 }
1952
1953 if (chase_symlinks(i->path, NULL, CHASE_NO_AUTOFS, NULL) == -EREMOTE)
1954 return t;
1955
1956 r = arg_create ? create_item(i) : 0;
1957 q = arg_remove ? remove_item(i) : 0;
1958 p = arg_clean ? clean_item(i) : 0;
1959
1960 return t < 0 ? t :
1961 r < 0 ? r :
1962 q < 0 ? q :
1963 p;
1964 }
1965
1966 static int process_item_array(ItemArray *array) {
1967 unsigned n;
1968 int r = 0, k;
1969
1970 assert(array);
1971
1972 for (n = 0; n < array->count; n++) {
1973 k = process_item(array->items + n);
1974 if (k < 0 && r == 0)
1975 r = k;
1976 }
1977
1978 return r;
1979 }
1980
1981 static void item_free_contents(Item *i) {
1982 assert(i);
1983 free(i->path);
1984 free(i->argument);
1985 strv_free(i->xattrs);
1986
1987 #if HAVE_ACL
1988 acl_free(i->acl_access);
1989 acl_free(i->acl_default);
1990 #endif
1991 }
1992
1993 static void item_array_free(ItemArray *a) {
1994 unsigned n;
1995
1996 if (!a)
1997 return;
1998
1999 for (n = 0; n < a->count; n++)
2000 item_free_contents(a->items + n);
2001 free(a->items);
2002 free(a);
2003 }
2004
2005 static int item_compare(const void *a, const void *b) {
2006 const Item *x = a, *y = b;
2007
2008 /* Make sure that the ownership taking item is put first, so
2009 * that we first create the node, and then can adjust it */
2010
2011 if (takes_ownership(x->type) && !takes_ownership(y->type))
2012 return -1;
2013 if (!takes_ownership(x->type) && takes_ownership(y->type))
2014 return 1;
2015
2016 return (int) x->type - (int) y->type;
2017 }
2018
2019 static bool item_compatible(Item *a, Item *b) {
2020 assert(a);
2021 assert(b);
2022 assert(streq(a->path, b->path));
2023
2024 if (takes_ownership(a->type) && takes_ownership(b->type))
2025 /* check if the items are the same */
2026 return streq_ptr(a->argument, b->argument) &&
2027
2028 a->uid_set == b->uid_set &&
2029 a->uid == b->uid &&
2030
2031 a->gid_set == b->gid_set &&
2032 a->gid == b->gid &&
2033
2034 a->mode_set == b->mode_set &&
2035 a->mode == b->mode &&
2036
2037 a->age_set == b->age_set &&
2038 a->age == b->age &&
2039
2040 a->mask_perms == b->mask_perms &&
2041
2042 a->keep_first_level == b->keep_first_level &&
2043
2044 a->major_minor == b->major_minor;
2045
2046 return true;
2047 }
2048
2049 static bool should_include_path(const char *path) {
2050 char **prefix;
2051
2052 STRV_FOREACH(prefix, arg_exclude_prefixes)
2053 if (path_startswith(path, *prefix)) {
2054 log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.",
2055 path, *prefix);
2056 return false;
2057 }
2058
2059 STRV_FOREACH(prefix, arg_include_prefixes)
2060 if (path_startswith(path, *prefix)) {
2061 log_debug("Entry \"%s\" matches include prefix \"%s\".", path, *prefix);
2062 return true;
2063 }
2064
2065 /* no matches, so we should include this path only if we
2066 * have no whitelist at all */
2067 if (strv_isempty(arg_include_prefixes))
2068 return true;
2069
2070 log_debug("Entry \"%s\" does not match any include prefix, skipping.", path);
2071 return false;
2072 }
2073
2074 static int specifier_expansion_from_arg(Item *i) {
2075 _cleanup_free_ char *unescaped = NULL, *resolved = NULL;
2076 char **xattr;
2077 int r;
2078
2079 assert(i);
2080
2081 if (i->argument == NULL)
2082 return 0;
2083
2084 switch (i->type) {
2085 case COPY_FILES:
2086 case CREATE_SYMLINK:
2087 case CREATE_FILE:
2088 case TRUNCATE_FILE:
2089 case WRITE_FILE:
2090 r = cunescape(i->argument, 0, &unescaped);
2091 if (r < 0)
2092 return log_error_errno(r, "Failed to unescape parameter to write: %s", i->argument);
2093
2094 r = specifier_printf(unescaped, specifier_table, NULL, &resolved);
2095 if (r < 0)
2096 return r;
2097
2098 free_and_replace(i->argument, resolved);
2099 break;
2100
2101 case SET_XATTR:
2102 case RECURSIVE_SET_XATTR:
2103 assert(i->xattrs);
2104
2105 STRV_FOREACH (xattr, i->xattrs) {
2106 r = specifier_printf(*xattr, specifier_table, NULL, &resolved);
2107 if (r < 0)
2108 return r;
2109
2110 free_and_replace(*xattr, resolved);
2111 }
2112 break;
2113
2114 default:
2115 break;
2116 }
2117 return 0;
2118 }
2119
2120 static int patch_var_run(const char *fname, unsigned line, char **path) {
2121 const char *k;
2122 char *n;
2123
2124 assert(path);
2125 assert(*path);
2126
2127 /* Optionally rewrites lines referencing /var/run/, to use /run/ instead. Why bother? tmpfiles merges lines in
2128 * some cases and detects conflicts in others. If files/directories are specified through two equivalent lines
2129 * this is problematic as neither case will be detected. Ideally we'd detect these cases by resolving symlinks
2130 * early, but that's precisely not what we can do here as this code very likely is running very early on, at a
2131 * time where the paths in question are not available yet, or even more importantly, our own tmpfiles rules
2132 * might create the paths that are intermediary to the listed paths. We can't really cover the generic case,
2133 * but the least we can do is cover the specific case of /var/run vs. /run, as /var/run is a legacy name for
2134 * /run only, and we explicitly document that and require that on systemd systems the former is a symlink to
2135 * the latter. Moreover files below this path are by far the primary usecase for tmpfiles.d/. */
2136
2137 k = path_startswith(*path, "/var/run/");
2138 if (isempty(k)) /* Don't complain about other paths than /var/run, and not about /var/run itself either. */
2139 return 0;
2140
2141 n = strjoin("/run/", k);
2142 if (!n)
2143 return log_oom();
2144
2145 /* Also log about this briefly. We do so at LOG_NOTICE level, as we fixed up the situation automatically, hence
2146 * there's no immediate need for action by the user. However, in the interest of making things less confusing
2147 * to the user, let's still inform the user that these snippets should really be updated. */
2148
2149 log_notice("[%s:%u] Line references path below legacy directory /var/run/, updating %s → %s; please update the tmpfiles.d/ drop-in file accordingly.", fname, line, *path, n);
2150
2151 free(*path);
2152 *path = n;
2153
2154 return 0;
2155 }
2156
2157 static int parse_line(const char *fname, unsigned line, const char *buffer, bool *invalid_config) {
2158
2159 _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL;
2160 _cleanup_(item_free_contents) Item i = {};
2161 ItemArray *existing;
2162 OrderedHashmap *h;
2163 int r, pos;
2164 bool force = false, boot = false;
2165
2166 assert(fname);
2167 assert(line >= 1);
2168 assert(buffer);
2169
2170 r = extract_many_words(
2171 &buffer,
2172 NULL,
2173 EXTRACT_QUOTES,
2174 &action,
2175 &path,
2176 &mode,
2177 &user,
2178 &group,
2179 &age,
2180 NULL);
2181 if (r < 0) {
2182 if (IN_SET(r, -EINVAL, -EBADSLT))
2183 /* invalid quoting and such or an unknown specifier */
2184 *invalid_config = true;
2185 return log_error_errno(r, "[%s:%u] Failed to parse line: %m", fname, line);
2186 } else if (r < 2) {
2187 *invalid_config = true;
2188 log_error("[%s:%u] Syntax error.", fname, line);
2189 return -EIO;
2190 }
2191
2192 if (!isempty(buffer) && !streq(buffer, "-")) {
2193 i.argument = strdup(buffer);
2194 if (!i.argument)
2195 return log_oom();
2196 }
2197
2198 if (isempty(action)) {
2199 *invalid_config = true;
2200 log_error("[%s:%u] Command too short '%s'.", fname, line, action);
2201 return -EINVAL;
2202 }
2203
2204 for (pos = 1; action[pos]; pos++) {
2205 if (action[pos] == '!' && !boot)
2206 boot = true;
2207 else if (action[pos] == '+' && !force)
2208 force = true;
2209 else {
2210 *invalid_config = true;
2211 log_error("[%s:%u] Unknown modifiers in command '%s'",
2212 fname, line, action);
2213 return -EINVAL;
2214 }
2215 }
2216
2217 if (boot && !arg_boot) {
2218 log_debug("Ignoring entry %s \"%s\" because --boot is not specified.",
2219 action, path);
2220 return 0;
2221 }
2222
2223 i.type = action[0];
2224 i.force = force;
2225
2226 r = specifier_printf(path, specifier_table, NULL, &i.path);
2227 if (r == -ENXIO)
2228 return log_unresolvable_specifier(fname, line);
2229 if (r < 0) {
2230 if (IN_SET(r, -EINVAL, -EBADSLT))
2231 *invalid_config = true;
2232 return log_error_errno(r, "[%s:%u] Failed to replace specifiers: %s", fname, line, path);
2233 }
2234
2235 r = patch_var_run(fname, line, &i.path);
2236 if (r < 0)
2237 return r;
2238
2239 switch (i.type) {
2240
2241 case CREATE_DIRECTORY:
2242 case CREATE_SUBVOLUME:
2243 case CREATE_SUBVOLUME_INHERIT_QUOTA:
2244 case CREATE_SUBVOLUME_NEW_QUOTA:
2245 case EMPTY_DIRECTORY:
2246 case TRUNCATE_DIRECTORY:
2247 case CREATE_FIFO:
2248 case IGNORE_PATH:
2249 case IGNORE_DIRECTORY_PATH:
2250 case REMOVE_PATH:
2251 case RECURSIVE_REMOVE_PATH:
2252 case ADJUST_MODE:
2253 case RELABEL_PATH:
2254 case RECURSIVE_RELABEL_PATH:
2255 if (i.argument)
2256 log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname, line, i.type);
2257
2258 break;
2259
2260 case CREATE_FILE:
2261 case TRUNCATE_FILE:
2262 break;
2263
2264 case CREATE_SYMLINK:
2265 if (!i.argument) {
2266 i.argument = strappend("/usr/share/factory/", i.path);
2267 if (!i.argument)
2268 return log_oom();
2269 }
2270 break;
2271
2272 case WRITE_FILE:
2273 if (!i.argument) {
2274 *invalid_config = true;
2275 log_error("[%s:%u] Write file requires argument.", fname, line);
2276 return -EBADMSG;
2277 }
2278 break;
2279
2280 case COPY_FILES:
2281 if (!i.argument) {
2282 i.argument = strappend("/usr/share/factory/", i.path);
2283 if (!i.argument)
2284 return log_oom();
2285 } else if (!path_is_absolute(i.argument)) {
2286 *invalid_config = true;
2287 log_error("[%s:%u] Source path is not absolute.", fname, line);
2288 return -EBADMSG;
2289 }
2290
2291 path_simplify(i.argument, false);
2292 break;
2293
2294 case CREATE_CHAR_DEVICE:
2295 case CREATE_BLOCK_DEVICE: {
2296 unsigned major, minor;
2297
2298 if (!i.argument) {
2299 *invalid_config = true;
2300 log_error("[%s:%u] Device file requires argument.", fname, line);
2301 return -EBADMSG;
2302 }
2303
2304 if (sscanf(i.argument, "%u:%u", &major, &minor) != 2) {
2305 *invalid_config = true;
2306 log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname, line, i.argument);
2307 return -EBADMSG;
2308 }
2309
2310 i.major_minor = makedev(major, minor);
2311 break;
2312 }
2313
2314 case SET_XATTR:
2315 case RECURSIVE_SET_XATTR:
2316 if (!i.argument) {
2317 *invalid_config = true;
2318 log_error("[%s:%u] Set extended attribute requires argument.", fname, line);
2319 return -EBADMSG;
2320 }
2321 r = parse_xattrs_from_arg(&i);
2322 if (r < 0)
2323 return r;
2324 break;
2325
2326 case SET_ACL:
2327 case RECURSIVE_SET_ACL:
2328 if (!i.argument) {
2329 *invalid_config = true;
2330 log_error("[%s:%u] Set ACLs requires argument.", fname, line);
2331 return -EBADMSG;
2332 }
2333 r = parse_acls_from_arg(&i);
2334 if (r < 0)
2335 return r;
2336 break;
2337
2338 case SET_ATTRIBUTE:
2339 case RECURSIVE_SET_ATTRIBUTE:
2340 if (!i.argument) {
2341 *invalid_config = true;
2342 log_error("[%s:%u] Set file attribute requires argument.", fname, line);
2343 return -EBADMSG;
2344 }
2345 r = parse_attribute_from_arg(&i);
2346 if (IN_SET(r, -EINVAL, -EBADSLT))
2347 *invalid_config = true;
2348 if (r < 0)
2349 return r;
2350 break;
2351
2352 default:
2353 log_error("[%s:%u] Unknown command type '%c'.", fname, line, (char) i.type);
2354 *invalid_config = true;
2355 return -EBADMSG;
2356 }
2357
2358 if (!path_is_absolute(i.path)) {
2359 log_error("[%s:%u] Path '%s' not absolute.", fname, line, i.path);
2360 *invalid_config = true;
2361 return -EBADMSG;
2362 }
2363
2364 path_simplify(i.path, false);
2365
2366 if (!should_include_path(i.path))
2367 return 0;
2368
2369 r = specifier_expansion_from_arg(&i);
2370 if (r == -ENXIO)
2371 return log_unresolvable_specifier(fname, line);
2372 if (r < 0) {
2373 if (IN_SET(r, -EINVAL, -EBADSLT))
2374 *invalid_config = true;
2375 return log_error_errno(r, "[%s:%u] Failed to substitute specifiers in argument: %m",
2376 fname, line);
2377 }
2378
2379 if (arg_root) {
2380 char *p;
2381
2382 p = prefix_root(arg_root, i.path);
2383 if (!p)
2384 return log_oom();
2385
2386 free(i.path);
2387 i.path = p;
2388 }
2389
2390 if (!isempty(user) && !streq(user, "-")) {
2391 const char *u = user;
2392
2393 r = get_user_creds(&u, &i.uid, NULL, NULL, NULL);
2394 if (r < 0) {
2395 *invalid_config = true;
2396 return log_error_errno(r, "[%s:%u] Unknown user '%s'.", fname, line, user);
2397 }
2398
2399 i.uid_set = true;
2400 }
2401
2402 if (!isempty(group) && !streq(group, "-")) {
2403 const char *g = group;
2404
2405 r = get_group_creds(&g, &i.gid);
2406 if (r < 0) {
2407 *invalid_config = true;
2408 log_error("[%s:%u] Unknown group '%s'.", fname, line, group);
2409 return r;
2410 }
2411
2412 i.gid_set = true;
2413 }
2414
2415 if (!isempty(mode) && !streq(mode, "-")) {
2416 const char *mm = mode;
2417 unsigned m;
2418
2419 if (*mm == '~') {
2420 i.mask_perms = true;
2421 mm++;
2422 }
2423
2424 if (parse_mode(mm, &m) < 0) {
2425 *invalid_config = true;
2426 log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode);
2427 return -EBADMSG;
2428 }
2429
2430 i.mode = m;
2431 i.mode_set = true;
2432 } else
2433 i.mode = IN_SET(i.type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA) ? 0755 : 0644;
2434
2435 if (!isempty(age) && !streq(age, "-")) {
2436 const char *a = age;
2437
2438 if (*a == '~') {
2439 i.keep_first_level = true;
2440 a++;
2441 }
2442
2443 if (parse_sec(a, &i.age) < 0) {
2444 *invalid_config = true;
2445 log_error("[%s:%u] Invalid age '%s'.", fname, line, age);
2446 return -EBADMSG;
2447 }
2448
2449 i.age_set = true;
2450 }
2451
2452 h = needs_glob(i.type) ? globs : items;
2453
2454 existing = ordered_hashmap_get(h, i.path);
2455 if (existing) {
2456 unsigned n;
2457
2458 for (n = 0; n < existing->count; n++) {
2459 if (!item_compatible(existing->items + n, &i)) {
2460 log_notice("[%s:%u] Duplicate line for path \"%s\", ignoring.",
2461 fname, line, i.path);
2462 return 0;
2463 }
2464 }
2465 } else {
2466 existing = new0(ItemArray, 1);
2467 if (!existing)
2468 return log_oom();
2469
2470 r = ordered_hashmap_put(h, i.path, existing);
2471 if (r < 0)
2472 return log_oom();
2473 }
2474
2475 if (!GREEDY_REALLOC(existing->items, existing->size, existing->count + 1))
2476 return log_oom();
2477
2478 memcpy(existing->items + existing->count++, &i, sizeof(i));
2479
2480 /* Sort item array, to enforce stable ordering of application */
2481 qsort_safe(existing->items, existing->count, sizeof(Item), item_compare);
2482
2483 zero(i);
2484 return 0;
2485 }
2486
2487 static int cat_config(char **config_dirs, char **args) {
2488 _cleanup_strv_free_ char **files = NULL;
2489 int r;
2490
2491 r = conf_files_list_with_replacement(arg_root, config_dirs, arg_replace, &files, NULL);
2492 if (r < 0)
2493 return r;
2494
2495 return cat_files(NULL, files, 0);
2496 }
2497
2498 static void help(void) {
2499 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
2500 "Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
2501 " -h --help Show this help\n"
2502 " --user Execute user configuration\n"
2503 " --version Show package version\n"
2504 " --cat-config Show configuration files\n"
2505 " --create Create marked files/directories\n"
2506 " --clean Clean up marked directories\n"
2507 " --remove Remove marked files/directories\n"
2508 " --boot Execute actions only safe at boot\n"
2509 " --prefix=PATH Only apply rules with the specified prefix\n"
2510 " --exclude-prefix=PATH Ignore rules with the specified prefix\n"
2511 " --root=PATH Operate on an alternate filesystem root\n"
2512 " --replace=PATH Treat arguments as replacement for PATH\n"
2513 " --no-pager Do not pipe output into a pager\n"
2514 , program_invocation_short_name);
2515 }
2516
2517 static int parse_argv(int argc, char *argv[]) {
2518
2519 enum {
2520 ARG_VERSION = 0x100,
2521 ARG_CAT_CONFIG,
2522 ARG_USER,
2523 ARG_CREATE,
2524 ARG_CLEAN,
2525 ARG_REMOVE,
2526 ARG_BOOT,
2527 ARG_PREFIX,
2528 ARG_EXCLUDE_PREFIX,
2529 ARG_ROOT,
2530 ARG_REPLACE,
2531 ARG_NO_PAGER,
2532 };
2533
2534 static const struct option options[] = {
2535 { "help", no_argument, NULL, 'h' },
2536 { "user", no_argument, NULL, ARG_USER },
2537 { "version", no_argument, NULL, ARG_VERSION },
2538 { "cat-config", no_argument, NULL, ARG_CAT_CONFIG },
2539 { "create", no_argument, NULL, ARG_CREATE },
2540 { "clean", no_argument, NULL, ARG_CLEAN },
2541 { "remove", no_argument, NULL, ARG_REMOVE },
2542 { "boot", no_argument, NULL, ARG_BOOT },
2543 { "prefix", required_argument, NULL, ARG_PREFIX },
2544 { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX },
2545 { "root", required_argument, NULL, ARG_ROOT },
2546 { "replace", required_argument, NULL, ARG_REPLACE },
2547 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
2548 {}
2549 };
2550
2551 int c, r;
2552
2553 assert(argc >= 0);
2554 assert(argv);
2555
2556 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
2557
2558 switch (c) {
2559
2560 case 'h':
2561 help();
2562 return 0;
2563
2564 case ARG_VERSION:
2565 return version();
2566
2567 case ARG_CAT_CONFIG:
2568 arg_cat_config = true;
2569 break;
2570
2571 case ARG_USER:
2572 arg_user = true;
2573 break;
2574
2575 case ARG_CREATE:
2576 arg_create = true;
2577 break;
2578
2579 case ARG_CLEAN:
2580 arg_clean = true;
2581 break;
2582
2583 case ARG_REMOVE:
2584 arg_remove = true;
2585 break;
2586
2587 case ARG_BOOT:
2588 arg_boot = true;
2589 break;
2590
2591 case ARG_PREFIX:
2592 if (strv_push(&arg_include_prefixes, optarg) < 0)
2593 return log_oom();
2594 break;
2595
2596 case ARG_EXCLUDE_PREFIX:
2597 if (strv_push(&arg_exclude_prefixes, optarg) < 0)
2598 return log_oom();
2599 break;
2600
2601 case ARG_ROOT:
2602 r = parse_path_argument_and_warn(optarg, true, &arg_root);
2603 if (r < 0)
2604 return r;
2605 break;
2606
2607 case ARG_REPLACE:
2608 if (!path_is_absolute(optarg) ||
2609 !endswith(optarg, ".conf")) {
2610 log_error("The argument to --replace= must an absolute path to a config file");
2611 return -EINVAL;
2612 }
2613
2614 arg_replace = optarg;
2615 break;
2616
2617 case ARG_NO_PAGER:
2618 arg_no_pager = true;
2619 break;
2620
2621 case '?':
2622 return -EINVAL;
2623
2624 default:
2625 assert_not_reached("Unhandled option");
2626 }
2627
2628 if (!arg_clean && !arg_create && !arg_remove && !arg_cat_config) {
2629 log_error("You need to specify at least one of --clean, --create or --remove.");
2630 return -EINVAL;
2631 }
2632
2633 if (arg_replace && arg_cat_config) {
2634 log_error("Option --replace= is not supported with --cat-config");
2635 return -EINVAL;
2636 }
2637
2638 if (arg_replace && optind >= argc) {
2639 log_error("When --replace= is given, some configuration items must be specified");
2640 return -EINVAL;
2641 }
2642
2643 return 1;
2644 }
2645
2646 static int read_config_file(char **config_dirs, const char *fn, bool ignore_enoent, bool *invalid_config) {
2647 _cleanup_fclose_ FILE *_f = NULL;
2648 FILE *f;
2649 char line[LINE_MAX];
2650 Iterator iterator;
2651 unsigned v = 0;
2652 Item *i;
2653 int r = 0;
2654
2655 assert(fn);
2656
2657 if (streq(fn, "-")) {
2658 log_debug("Reading config from stdin…");
2659 fn = "<stdin>";
2660 f = stdin;
2661 } else {
2662 r = search_and_fopen(fn, "re", arg_root, (const char**) config_dirs, &_f);
2663 if (r < 0) {
2664 if (ignore_enoent && r == -ENOENT) {
2665 log_debug_errno(r, "Failed to open \"%s\", ignoring: %m", fn);
2666 return 0;
2667 }
2668
2669 return log_error_errno(r, "Failed to open '%s': %m", fn);
2670 }
2671 log_debug("Reading config file \"%s\"…", fn);
2672 f = _f;
2673 }
2674
2675 FOREACH_LINE(line, f, break) {
2676 char *l;
2677 int k;
2678 bool invalid_line = false;
2679
2680 v++;
2681
2682 l = strstrip(line);
2683 if (IN_SET(*l, 0, '#'))
2684 continue;
2685
2686 k = parse_line(fn, v, l, &invalid_line);
2687 if (k < 0) {
2688 if (invalid_line)
2689 /* Allow reporting with a special code if the caller requested this */
2690 *invalid_config = true;
2691 else if (r == 0)
2692 /* The first error becomes our return value */
2693 r = k;
2694 }
2695 }
2696
2697 /* we have to determine age parameter for each entry of type X */
2698 ORDERED_HASHMAP_FOREACH(i, globs, iterator) {
2699 Iterator iter;
2700 Item *j, *candidate_item = NULL;
2701
2702 if (i->type != IGNORE_DIRECTORY_PATH)
2703 continue;
2704
2705 ORDERED_HASHMAP_FOREACH(j, items, iter) {
2706 if (!IN_SET(j->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA))
2707 continue;
2708
2709 if (path_equal(j->path, i->path)) {
2710 candidate_item = j;
2711 break;
2712 }
2713
2714 if ((!candidate_item && path_startswith(i->path, j->path)) ||
2715 (candidate_item && path_startswith(j->path, candidate_item->path) && (fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0)))
2716 candidate_item = j;
2717 }
2718
2719 if (candidate_item && candidate_item->age_set) {
2720 i->age = candidate_item->age;
2721 i->age_set = true;
2722 }
2723 }
2724
2725 if (ferror(f)) {
2726 log_error_errno(errno, "Failed to read from file %s: %m", fn);
2727 if (r == 0)
2728 r = -EIO;
2729 }
2730
2731 return r;
2732 }
2733
2734 static int parse_arguments(char **config_dirs, char **args, bool *invalid_config) {
2735 char **arg;
2736 int r;
2737
2738 STRV_FOREACH(arg, args) {
2739 r = read_config_file(config_dirs, *arg, false, invalid_config);
2740 if (r < 0)
2741 return r;
2742 }
2743
2744 return 0;
2745 }
2746
2747 static int read_config_files(char **config_dirs, char **args, bool *invalid_config) {
2748 _cleanup_strv_free_ char **files = NULL;
2749 _cleanup_free_ char *p = NULL;
2750 char **f;
2751 int r;
2752
2753 r = conf_files_list_with_replacement(arg_root, config_dirs, arg_replace, &files, &p);
2754 if (r < 0)
2755 return r;
2756
2757 STRV_FOREACH(f, files)
2758 if (p && path_equal(*f, p)) {
2759 log_debug("Parsing arguments at position \"%s\"…", *f);
2760
2761 r = parse_arguments(config_dirs, args, invalid_config);
2762 if (r < 0)
2763 return r;
2764 } else
2765 /* Just warn, ignore result otherwise.
2766 * read_config_file() has some debug output, so no need to print anything. */
2767 (void) read_config_file(config_dirs, *f, true, invalid_config);
2768
2769 return 0;
2770 }
2771
2772 int main(int argc, char *argv[]) {
2773 int r, k, r_process = 0;
2774 ItemArray *a;
2775 Iterator iterator;
2776 _cleanup_strv_free_ char **config_dirs = NULL;
2777 bool invalid_config = false;
2778
2779 r = parse_argv(argc, argv);
2780 if (r <= 0)
2781 goto finish;
2782
2783 log_set_target(LOG_TARGET_AUTO);
2784 log_parse_environment();
2785 log_open();
2786
2787 if (arg_user) {
2788 r = user_config_paths(&config_dirs);
2789 if (r < 0) {
2790 log_error_errno(r, "Failed to initialize configuration directory list: %m");
2791 goto finish;
2792 }
2793 } else {
2794 config_dirs = strv_split_nulstr(CONF_PATHS_NULSTR("tmpfiles.d"));
2795 if (!config_dirs) {
2796 r = log_oom();
2797 goto finish;
2798 }
2799 }
2800
2801 if (DEBUG_LOGGING) {
2802 _cleanup_free_ char *t = NULL;
2803
2804 t = strv_join(config_dirs, "\n\t");
2805 if (t)
2806 log_debug("Looking for configuration files in (higher priority first):\n\t%s", t);
2807 }
2808
2809 if (arg_cat_config) {
2810 (void) pager_open(arg_no_pager, false);
2811
2812 r = cat_config(config_dirs, argv + optind);
2813 goto finish;
2814 }
2815
2816 umask(0022);
2817
2818 mac_selinux_init();
2819
2820 items = ordered_hashmap_new(&string_hash_ops);
2821 globs = ordered_hashmap_new(&string_hash_ops);
2822
2823 if (!items || !globs) {
2824 r = log_oom();
2825 goto finish;
2826 }
2827
2828 /* If command line arguments are specified along with --replace, read all
2829 * configuration files and insert the positional arguments at the specified
2830 * place. Otherwise, if command line arguments are specified, execute just
2831 * them, and finally, without --replace= or any positional arguments, just
2832 * read configuration and execute it.
2833 */
2834 if (arg_replace || optind >= argc)
2835 r = read_config_files(config_dirs, argv + optind, &invalid_config);
2836 else
2837 r = parse_arguments(config_dirs, argv + optind, &invalid_config);
2838 if (r < 0)
2839 goto finish;
2840
2841 /* The non-globbing ones usually create things, hence we apply
2842 * them first */
2843 ORDERED_HASHMAP_FOREACH(a, items, iterator) {
2844 k = process_item_array(a);
2845 if (k < 0 && r_process == 0)
2846 r_process = k;
2847 }
2848
2849 /* The globbing ones usually alter things, hence we apply them
2850 * second. */
2851 ORDERED_HASHMAP_FOREACH(a, globs, iterator) {
2852 k = process_item_array(a);
2853 if (k < 0 && r_process == 0)
2854 r_process = k;
2855 }
2856
2857 finish:
2858 pager_close();
2859
2860 ordered_hashmap_free_with_destructor(items, item_array_free);
2861 ordered_hashmap_free_with_destructor(globs, item_array_free);
2862
2863 free(arg_include_prefixes);
2864 free(arg_exclude_prefixes);
2865 free(arg_root);
2866
2867 set_free_free(unix_sockets);
2868
2869 mac_selinux_finish();
2870
2871 if (r < 0 || ERRNO_IS_RESOURCE(-r_process))
2872 return EXIT_FAILURE;
2873 else if (invalid_config)
2874 return EX_DATAERR;
2875 else if (r_process < 0)
2876 return EX_CANTCREAT;
2877 else
2878 return EXIT_SUCCESS;
2879 }
Unnamed repository; edit this file 'description' to name the repository.