1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 This file is part of systemd.
5 Copyright 2010 Lennart Poettering, Kay Sievers
6 Copyright 2015 Zbigniew Jędrzejewski-Szmek
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
35 #include <sys/xattr.h>
41 #include "alloc-util.h"
42 #include "btrfs-util.h"
43 #include "capability-util.h"
44 #include "chattr-util.h"
45 #include "conf-files.h"
48 #include "dirent-util.h"
52 #include "format-util.h"
54 #include "glob-util.h"
61 #include "mount-util.h"
62 #include "parse-util.h"
63 #include "path-util.h"
65 #include "selinux-util.h"
67 #include "specifier.h"
68 #include "stat-util.h"
69 #include "stdio-util.h"
70 #include "string-table.h"
71 #include "string-util.h"
73 #include "umask-util.h"
74 #include "user-util.h"
77 /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates
78 * them in the file system. This is intended to be used to create
79 * properly owned directories beneath /tmp, /var/tmp, /run, which are
80 * volatile and hence need to be recreated on bootup. */
82 typedef enum ItemType
{
83 /* These ones take file names */
86 CREATE_DIRECTORY
= 'd',
87 TRUNCATE_DIRECTORY
= 'D',
88 CREATE_SUBVOLUME
= 'v',
89 CREATE_SUBVOLUME_INHERIT_QUOTA
= 'q',
90 CREATE_SUBVOLUME_NEW_QUOTA
= 'Q',
93 CREATE_CHAR_DEVICE
= 'c',
94 CREATE_BLOCK_DEVICE
= 'b',
97 /* These ones take globs */
99 EMPTY_DIRECTORY
= 'e',
101 RECURSIVE_SET_XATTR
= 'T',
103 RECURSIVE_SET_ACL
= 'A',
105 RECURSIVE_SET_ATTRIBUTE
= 'H',
107 IGNORE_DIRECTORY_PATH
= 'X',
109 RECURSIVE_REMOVE_PATH
= 'R',
111 RECURSIVE_RELABEL_PATH
= 'Z',
112 ADJUST_MODE
= 'm', /* legacy, 'z' is identical to this */
115 typedef struct Item
{
131 unsigned attribute_value
;
132 unsigned attribute_mask
;
139 bool attribute_set
:1;
141 bool keep_first_level
:1;
148 typedef struct ItemArray
{
154 static bool arg_create
= false;
155 static bool arg_clean
= false;
156 static bool arg_remove
= false;
157 static bool arg_boot
= false;
159 static char **arg_include_prefixes
= NULL
;
160 static char **arg_exclude_prefixes
= NULL
;
161 static char *arg_root
= NULL
;
163 static const char conf_file_dirs
[] = CONF_PATHS_NULSTR("tmpfiles.d");
165 #define MAX_DEPTH 256
167 static OrderedHashmap
*items
= NULL
, *globs
= NULL
;
168 static Set
*unix_sockets
= NULL
;
170 static int specifier_machine_id_safe(char specifier
, void *data
, void *userdata
, char **ret
);
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
},
180 static int specifier_machine_id_safe(char specifier
, void *data
, void *userdata
, char **ret
) {
183 /* If /etc/machine_id is missing (e.g. in a chroot environment), returns
184 * a recognizable error so that the caller can skip the rule
187 r
= specifier_machine_id(specifier
, data
, userdata
, ret
);
194 static int log_unresolvable_specifier(const char *filename
, unsigned line
) {
195 static bool notified
= false;
197 /* This is called when /etc is not fully initialized (e.g. in a chroot
198 * environment) where some specifiers are unresolvable. These cases are
199 * not considered as an error so log at LOG_NOTICE only for the first
200 * time and then downgrade this to LOG_DEBUG for the rest. */
202 log_full(notified
? LOG_DEBUG
: LOG_NOTICE
,
203 "[%s:%u] Failed to resolve specifier: uninitialized /etc detected, skipping",
207 log_notice("All rules containing unresolvable specifiers will be skipped.");
213 static bool needs_glob(ItemType t
) {
217 IGNORE_DIRECTORY_PATH
,
219 RECURSIVE_REMOVE_PATH
,
223 RECURSIVE_RELABEL_PATH
,
229 RECURSIVE_SET_ATTRIBUTE
);
232 static bool takes_ownership(ItemType t
) {
240 CREATE_SUBVOLUME_INHERIT_QUOTA
,
241 CREATE_SUBVOLUME_NEW_QUOTA
,
249 IGNORE_DIRECTORY_PATH
,
251 RECURSIVE_REMOVE_PATH
);
254 static struct Item
* find_glob(OrderedHashmap
*h
, const char *match
) {
258 ORDERED_HASHMAP_FOREACH(j
, h
, i
) {
261 for (n
= 0; n
< j
->count
; n
++) {
262 Item
*item
= j
->items
+ n
;
264 if (fnmatch(item
->path
, match
, FNM_PATHNAME
|FNM_PERIOD
) == 0)
272 static void load_unix_sockets(void) {
273 _cleanup_fclose_
FILE *f
= NULL
;
279 /* We maintain a cache of the sockets we found in
280 * /proc/net/unix to speed things up a little. */
282 unix_sockets
= set_new(&string_hash_ops
);
286 f
= fopen("/proc/net/unix", "re");
291 if (!fgets(line
, sizeof(line
), f
))
298 if (!fgets(line
, sizeof(line
), f
))
303 p
= strchr(line
, ':');
311 p
+= strspn(p
, WHITESPACE
);
312 p
+= strcspn(p
, WHITESPACE
); /* skip one more word */
313 p
+= strspn(p
, WHITESPACE
);
322 path_kill_slashes(s
);
324 k
= set_consume(unix_sockets
, s
);
325 if (k
< 0 && k
!= -EEXIST
)
332 set_free_free(unix_sockets
);
336 static bool unix_socket_alive(const char *fn
) {
342 return !!set_get(unix_sockets
, (char*) fn
);
344 /* We don't know, so assume yes */
348 static int dir_is_mount_point(DIR *d
, const char *subdir
) {
350 int mount_id_parent
, mount_id
;
353 r_p
= name_to_handle_at_loop(dirfd(d
), ".", NULL
, &mount_id_parent
, 0);
357 r
= name_to_handle_at_loop(dirfd(d
), subdir
, NULL
, &mount_id
, 0);
361 /* got no handle; make no assumptions, return error */
362 if (r_p
< 0 && r
< 0)
365 /* got both handles; if they differ, it is a mount point */
366 if (r_p
>= 0 && r
>= 0)
367 return mount_id_parent
!= mount_id
;
369 /* got only one handle; assume different mount points if one
370 * of both queries was not supported by the filesystem */
371 if (IN_SET(r_p
, -ENOSYS
, -EOPNOTSUPP
) || IN_SET(r
, -ENOSYS
, -EOPNOTSUPP
))
380 static DIR* xopendirat_nomod(int dirfd
, const char *path
) {
383 dir
= xopendirat(dirfd
, path
, O_NOFOLLOW
|O_NOATIME
);
387 log_debug_errno(errno
, "Cannot open %sdirectory \"%s\": %m", dirfd
== AT_FDCWD
? "" : "sub", path
);
391 dir
= xopendirat(dirfd
, path
, O_NOFOLLOW
);
393 log_debug_errno(errno
, "Cannot open %sdirectory \"%s\": %m", dirfd
== AT_FDCWD
? "" : "sub", path
);
398 static DIR* opendir_nomod(const char *path
) {
399 return xopendirat_nomod(AT_FDCWD
, path
);
402 static int dir_cleanup(
406 const struct stat
*ds
,
411 bool keep_this_level
) {
414 struct timespec times
[2];
415 bool deleted
= false;
418 FOREACH_DIRENT_ALL(dent
, d
, break) {
421 _cleanup_free_
char *sub_path
= NULL
;
423 if (dot_or_dot_dot(dent
->d_name
))
426 if (fstatat(dirfd(d
), dent
->d_name
, &s
, AT_SYMLINK_NOFOLLOW
) < 0) {
430 /* FUSE, NFS mounts, SELinux might return EACCES */
432 log_debug_errno(errno
, "stat(%s/%s) failed: %m", p
, dent
->d_name
);
434 log_error_errno(errno
, "stat(%s/%s) failed: %m", p
, dent
->d_name
);
439 /* Stay on the same filesystem */
440 if (s
.st_dev
!= rootdev
) {
441 log_debug("Ignoring \"%s/%s\": different filesystem.", p
, dent
->d_name
);
445 /* Try to detect bind mounts of the same filesystem instance; they
446 * do not differ in device major/minors. This type of query is not
447 * supported on all kernels or filesystem types though. */
448 if (S_ISDIR(s
.st_mode
) && dir_is_mount_point(d
, dent
->d_name
) > 0) {
449 log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.",
454 /* Do not delete read-only files owned by root */
455 if (s
.st_uid
== 0 && !(s
.st_mode
& S_IWUSR
)) {
456 log_debug("Ignoring \"%s/%s\": read-only and owner by root.", p
, dent
->d_name
);
460 sub_path
= strjoin(p
, "/", dent
->d_name
);
466 /* Is there an item configured for this path? */
467 if (ordered_hashmap_get(items
, sub_path
)) {
468 log_debug("Ignoring \"%s\": a separate entry exists.", sub_path
);
472 if (find_glob(globs
, sub_path
)) {
473 log_debug("Ignoring \"%s\": a separate glob exists.", sub_path
);
477 if (S_ISDIR(s
.st_mode
)) {
480 streq(dent
->d_name
, "lost+found") &&
482 log_debug("Ignoring \"%s\".", sub_path
);
487 log_warning("Reached max depth on \"%s\".", sub_path
);
489 _cleanup_closedir_
DIR *sub_dir
;
492 sub_dir
= xopendirat_nomod(dirfd(d
), dent
->d_name
);
495 r
= log_error_errno(errno
, "opendir(%s) failed: %m", sub_path
);
500 q
= dir_cleanup(i
, sub_path
, sub_dir
, &s
, cutoff
, rootdev
, false, maxdepth
-1, false);
505 /* Note: if you are wondering why we don't
506 * support the sticky bit for excluding
507 * directories from cleaning like we do it for
508 * other file system objects: well, the sticky
509 * bit already has a meaning for directories,
510 * so we don't want to overload that. */
512 if (keep_this_level
) {
513 log_debug("Keeping \"%s\".", sub_path
);
517 /* Ignore ctime, we change it when deleting */
518 age
= timespec_load(&s
.st_mtim
);
520 char a
[FORMAT_TIMESTAMP_MAX
];
521 /* Follows spelling in stat(1). */
522 log_debug("Directory \"%s\": modify time %s is too new.",
524 format_timestamp_us(a
, sizeof(a
), age
));
528 age
= timespec_load(&s
.st_atim
);
530 char a
[FORMAT_TIMESTAMP_MAX
];
531 log_debug("Directory \"%s\": access time %s is too new.",
533 format_timestamp_us(a
, sizeof(a
), age
));
537 log_debug("Removing directory \"%s\".", sub_path
);
538 if (unlinkat(dirfd(d
), dent
->d_name
, AT_REMOVEDIR
) < 0)
539 if (!IN_SET(errno
, ENOENT
, ENOTEMPTY
)) {
540 log_error_errno(errno
, "rmdir(%s): %m", sub_path
);
545 /* Skip files for which the sticky bit is
546 * set. These are semantics we define, and are
547 * unknown elsewhere. See XDG_RUNTIME_DIR
548 * specification for details. */
549 if (s
.st_mode
& S_ISVTX
) {
550 log_debug("Skipping \"%s\": sticky bit set.", sub_path
);
554 if (mountpoint
&& S_ISREG(s
.st_mode
))
555 if (s
.st_uid
== 0 && STR_IN_SET(dent
->d_name
,
559 log_debug("Skipping \"%s\".", sub_path
);
563 /* Ignore sockets that are listed in /proc/net/unix */
564 if (S_ISSOCK(s
.st_mode
) && unix_socket_alive(sub_path
)) {
565 log_debug("Skipping \"%s\": live socket.", sub_path
);
569 /* Ignore device nodes */
570 if (S_ISCHR(s
.st_mode
) || S_ISBLK(s
.st_mode
)) {
571 log_debug("Skipping \"%s\": a device.", sub_path
);
575 /* Keep files on this level around if this is
577 if (keep_this_level
) {
578 log_debug("Keeping \"%s\".", sub_path
);
582 age
= timespec_load(&s
.st_mtim
);
584 char a
[FORMAT_TIMESTAMP_MAX
];
585 /* Follows spelling in stat(1). */
586 log_debug("File \"%s\": modify time %s is too new.",
588 format_timestamp_us(a
, sizeof(a
), age
));
592 age
= timespec_load(&s
.st_atim
);
594 char a
[FORMAT_TIMESTAMP_MAX
];
595 log_debug("File \"%s\": access time %s is too new.",
597 format_timestamp_us(a
, sizeof(a
), age
));
601 age
= timespec_load(&s
.st_ctim
);
603 char a
[FORMAT_TIMESTAMP_MAX
];
604 log_debug("File \"%s\": change time %s is too new.",
606 format_timestamp_us(a
, sizeof(a
), age
));
610 log_debug("unlink \"%s\"", sub_path
);
612 if (unlinkat(dirfd(d
), dent
->d_name
, 0) < 0)
614 r
= log_error_errno(errno
, "unlink(%s): %m", sub_path
);
623 char a
[FORMAT_TIMESTAMP_MAX
], b
[FORMAT_TIMESTAMP_MAX
];
625 /* Restore original directory timestamps */
626 times
[0] = ds
->st_atim
;
627 times
[1] = ds
->st_mtim
;
629 age1
= timespec_load(&ds
->st_atim
);
630 age2
= timespec_load(&ds
->st_mtim
);
631 log_debug("Restoring access and modification time on \"%s\": %s, %s",
633 format_timestamp_us(a
, sizeof(a
), age1
),
634 format_timestamp_us(b
, sizeof(b
), age2
));
635 if (futimens(dirfd(d
), times
) < 0)
636 log_error_errno(errno
, "utimensat(%s): %m", p
);
642 static int path_set_perms(Item
*i
, const char *path
) {
643 _cleanup_close_
int fd
= -1;
649 /* We open the file with O_PATH here, to make the operation
650 * somewhat atomic. Also there's unfortunately no fchmodat()
651 * with AT_SYMLINK_NOFOLLOW, hence we emulate it here via
654 fd
= open(path
, O_NOFOLLOW
|O_CLOEXEC
|O_PATH
);
656 int level
= LOG_ERR
, r
= -errno
;
658 /* Option "e" operates only on existing objects. Do not
659 * print errors about non-existent files or directories */
660 if (i
->type
== EMPTY_DIRECTORY
&& errno
== ENOENT
) {
665 log_full_errno(level
, errno
, "Adjusting owner and mode for %s failed: %m", path
);
670 if (fstatat(fd
, "", &st
, AT_EMPTY_PATH
) < 0)
671 return log_error_errno(errno
, "Failed to fstat() file %s: %m", path
);
673 if (S_ISLNK(st
.st_mode
))
674 log_debug("Skipping mode an owner fix for symlink %s.", path
);
676 char fn
[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
677 xsprintf(fn
, "/proc/self/fd/%i", fd
);
679 /* not using i->path directly because it may be a glob */
684 if (!(st
.st_mode
& 0111))
686 if (!(st
.st_mode
& 0222))
688 if (!(st
.st_mode
& 0444))
690 if (!S_ISDIR(st
.st_mode
))
691 m
&= ~07000; /* remove sticky/sgid/suid bit, unless directory */
694 if (m
== (st
.st_mode
& 07777))
695 log_debug("\"%s\" has right mode %o", path
, st
.st_mode
);
697 log_debug("chmod \"%s\" to mode %o", path
, m
);
698 if (chmod(fn
, m
) < 0)
699 return log_error_errno(errno
, "chmod() of %s via %s failed: %m", path
, fn
);
703 if ((i
->uid
!= st
.st_uid
|| i
->gid
!= st
.st_gid
) &&
704 (i
->uid_set
|| i
->gid_set
)) {
705 log_debug("chown \"%s\" to "UID_FMT
"."GID_FMT
,
707 i
->uid_set
? i
->uid
: UID_INVALID
,
708 i
->gid_set
? i
->gid
: GID_INVALID
);
710 i
->uid_set
? i
->uid
: UID_INVALID
,
711 i
->gid_set
? i
->gid
: GID_INVALID
) < 0)
712 return log_error_errno(errno
, "chown() of %s via %s failed: %m", path
, fn
);
718 return label_fix(path
, false, false);
721 static int parse_xattrs_from_arg(Item
*i
) {
731 _cleanup_free_
char *name
= NULL
, *value
= NULL
, *xattr
= NULL
;
733 r
= extract_first_word(&p
, &xattr
, NULL
, EXTRACT_QUOTES
|EXTRACT_CUNESCAPE
);
735 log_warning_errno(r
, "Failed to parse extended attribute '%s', ignoring: %m", p
);
739 r
= split_pair(xattr
, "=", &name
, &value
);
741 log_warning_errno(r
, "Failed to parse extended attribute, ignoring: %s", xattr
);
745 if (isempty(name
) || isempty(value
)) {
746 log_warning("Malformed extended attribute found, ignoring: %s", xattr
);
750 if (strv_push_pair(&i
->xattrs
, name
, value
) < 0)
759 static int path_set_xattrs(Item
*i
, const char *path
) {
760 char **name
, **value
;
765 STRV_FOREACH_PAIR(name
, value
, i
->xattrs
) {
769 log_debug("Setting extended attribute '%s=%s' on %s.", *name
, *value
, path
);
770 if (lsetxattr(path
, *name
, *value
, n
, 0) < 0)
771 return log_error_errno(errno
, "Setting extended attribute %s=%s on %s failed: %m",
772 *name
, *value
, path
);
777 static int parse_acls_from_arg(Item
*item
) {
783 /* If force (= modify) is set, we will not modify the acl
784 * afterwards, so the mask can be added now if necessary. */
786 r
= parse_acl(item
->argument
, &item
->acl_access
, &item
->acl_default
, !item
->force
);
788 log_warning_errno(r
, "Failed to parse ACL \"%s\": %m. Ignoring", item
->argument
);
790 log_warning_errno(ENOSYS
, "ACLs are not supported. Ignoring");
797 static int path_set_acl(const char *path
, const char *pretty
, acl_type_t type
, acl_t acl
, bool modify
) {
798 _cleanup_(acl_free_charpp
) char *t
= NULL
;
799 _cleanup_(acl_freep
) acl_t dup
= NULL
;
802 /* Returns 0 for success, positive error if already warned,
803 * negative error otherwise. */
806 r
= acls_for_file(path
, type
, acl
, &dup
);
810 r
= calc_acl_mask_if_needed(&dup
);
818 /* the mask was already added earlier if needed */
821 r
= add_base_acls_if_needed(&dup
, path
);
825 t
= acl_to_any_text(dup
, NULL
, ',', TEXT_ABBREVIATE
);
826 log_debug("Setting %s ACL %s on %s.",
827 type
== ACL_TYPE_ACCESS
? "access" : "default",
830 r
= acl_set_file(path
, type
, dup
);
832 /* Return positive to indicate we already warned */
833 return -log_error_errno(errno
,
834 "Setting %s ACL \"%s\" on %s failed: %m",
835 type
== ACL_TYPE_ACCESS
? "access" : "default",
842 static int path_set_acls(Item
*item
, const char *path
) {
845 char fn
[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
846 _cleanup_close_
int fd
= -1;
852 fd
= open(path
, O_NOFOLLOW
|O_CLOEXEC
|O_PATH
);
854 return log_error_errno(errno
, "Adjusting ACL of %s failed: %m", path
);
856 if (fstatat(fd
, "", &st
, AT_EMPTY_PATH
) < 0)
857 return log_error_errno(errno
, "Failed to fstat() file %s: %m", path
);
859 if (S_ISLNK(st
.st_mode
)) {
860 log_debug("Skipping ACL fix for symlink %s.", path
);
864 xsprintf(fn
, "/proc/self/fd/%i", fd
);
866 if (item
->acl_access
)
867 r
= path_set_acl(fn
, path
, ACL_TYPE_ACCESS
, item
->acl_access
, item
->force
);
869 if (r
== 0 && item
->acl_default
)
870 r
= path_set_acl(fn
, path
, ACL_TYPE_DEFAULT
, item
->acl_default
, item
->force
);
873 return -r
; /* already warned */
874 else if (r
== -EOPNOTSUPP
) {
875 log_debug_errno(r
, "ACLs not supported by file system at %s", path
);
878 log_error_errno(r
, "ACL operation on \"%s\" failed: %m", path
);
883 #define ATTRIBUTES_ALL \
892 FS_JOURNAL_DATA_FL | \
899 static int parse_attribute_from_arg(Item
*item
) {
901 static const struct {
905 { 'A', FS_NOATIME_FL
}, /* do not update atime */
906 { 'S', FS_SYNC_FL
}, /* Synchronous updates */
907 { 'D', FS_DIRSYNC_FL
}, /* dirsync behaviour (directories only) */
908 { 'a', FS_APPEND_FL
}, /* writes to file may only append */
909 { 'c', FS_COMPR_FL
}, /* Compress file */
910 { 'd', FS_NODUMP_FL
}, /* do not dump file */
911 { 'e', FS_EXTENT_FL
}, /* Extents */
912 { 'i', FS_IMMUTABLE_FL
}, /* Immutable file */
913 { 'j', FS_JOURNAL_DATA_FL
}, /* Reserved for ext3 */
914 { 's', FS_SECRM_FL
}, /* Secure deletion */
915 { 'u', FS_UNRM_FL
}, /* Undelete */
916 { 't', FS_NOTAIL_FL
}, /* file tail should not be merged */
917 { 'T', FS_TOPDIR_FL
}, /* Top of directory hierarchies */
918 { 'C', FS_NOCOW_FL
}, /* Do not cow file */
927 unsigned value
= 0, mask
= 0;
937 } else if (*p
== '-') {
940 } else if (*p
== '=') {
946 if (isempty(p
) && mode
!= MODE_SET
) {
947 log_error("Setting file attribute on '%s' needs an attribute specification.", item
->path
);
951 for (; p
&& *p
; p
++) {
954 for (i
= 0; i
< ELEMENTSOF(attributes
); i
++)
955 if (*p
== attributes
[i
].character
)
958 if (i
>= ELEMENTSOF(attributes
)) {
959 log_error("Unknown file attribute '%c' on '%s'.", *p
, item
->path
);
963 v
= attributes
[i
].value
;
965 SET_FLAG(value
, v
, IN_SET(mode
, MODE_ADD
, MODE_SET
));
970 if (mode
== MODE_SET
)
971 mask
|= ATTRIBUTES_ALL
;
975 item
->attribute_mask
= mask
;
976 item
->attribute_value
= value
;
977 item
->attribute_set
= true;
982 static int path_set_attribute(Item
*item
, const char *path
) {
983 _cleanup_close_
int fd
= -1;
988 if (!item
->attribute_set
|| item
->attribute_mask
== 0)
991 fd
= open(path
, O_RDONLY
|O_NONBLOCK
|O_CLOEXEC
|O_NOATIME
|O_NOFOLLOW
);
994 return log_error_errno(errno
, "Skipping file attributes adjustment on symlink %s.", path
);
996 return log_error_errno(errno
, "Cannot open '%s': %m", path
);
999 if (fstat(fd
, &st
) < 0)
1000 return log_error_errno(errno
, "Cannot stat '%s': %m", path
);
1002 /* Issuing the file attribute ioctls on device nodes is not
1003 * safe, as that will be delivered to the drivers, not the
1004 * file system containing the device node. */
1005 if (!S_ISREG(st
.st_mode
) && !S_ISDIR(st
.st_mode
)) {
1006 log_error("Setting file flags is only supported on regular files and directories, cannot set on '%s'.", path
);
1010 f
= item
->attribute_value
& item
->attribute_mask
;
1012 /* Mask away directory-specific flags */
1013 if (!S_ISDIR(st
.st_mode
))
1014 f
&= ~FS_DIRSYNC_FL
;
1016 r
= chattr_fd(fd
, f
, item
->attribute_mask
);
1018 log_full_errno(IN_SET(r
, -ENOTTY
, -EOPNOTSUPP
) ? LOG_DEBUG
: LOG_WARNING
,
1020 "Cannot set file attribute for '%s', value=0x%08x, mask=0x%08x: %m",
1021 path
, item
->attribute_value
, item
->attribute_mask
);
1026 static int write_one_file(Item
*i
, const char *path
) {
1027 _cleanup_close_
int fd
= -1;
1034 flags
= i
->type
== CREATE_FILE
? O_CREAT
|O_APPEND
|O_NOFOLLOW
:
1035 i
->type
== TRUNCATE_FILE
? O_CREAT
|O_TRUNC
|O_NOFOLLOW
: 0;
1037 RUN_WITH_UMASK(0000) {
1038 mac_selinux_create_file_prepare(path
, S_IFREG
);
1039 fd
= open(path
, flags
|O_NDELAY
|O_CLOEXEC
|O_WRONLY
|O_NOCTTY
, i
->mode
);
1040 mac_selinux_create_file_clear();
1044 if (i
->type
== WRITE_FILE
&& errno
== ENOENT
) {
1045 log_debug_errno(errno
, "Not writing \"%s\": %m", path
);
1050 if (!i
->argument
&& errno
== EROFS
&& stat(path
, &st
) == 0 &&
1051 (i
->type
== CREATE_FILE
|| st
.st_size
== 0))
1054 return log_error_errno(r
, "Failed to create file %s: %m", path
);
1058 log_debug("%s to \"%s\".", i
->type
== CREATE_FILE
? "Appending" : "Writing", path
);
1060 r
= loop_write(fd
, i
->argument
, strlen(i
->argument
), false);
1062 return log_error_errno(r
, "Failed to write file \"%s\": %m", path
);
1064 log_debug("\"%s\" has been created.", path
);
1066 fd
= safe_close(fd
);
1068 if (stat(path
, &st
) < 0)
1069 return log_error_errno(errno
, "stat(%s) failed: %m", path
);
1072 if (!S_ISREG(st
.st_mode
)) {
1073 log_error("%s is not a file.", path
);
1077 r
= path_set_perms(i
, path
);
1084 typedef int (*action_t
)(Item
*, const char *);
1086 static int item_do_children(Item
*i
, const char *path
, action_t action
) {
1087 _cleanup_closedir_
DIR *d
;
1094 /* This returns the first error we run into, but nevertheless
1097 d
= opendir_nomod(path
);
1099 return IN_SET(errno
, ENOENT
, ENOTDIR
, ELOOP
) ? 0 : -errno
;
1101 FOREACH_DIRENT_ALL(de
, d
, r
= -errno
) {
1102 _cleanup_free_
char *p
= NULL
;
1105 if (dot_or_dot_dot(de
->d_name
))
1108 p
= strjoin(path
, "/", de
->d_name
);
1113 if (q
< 0 && q
!= -ENOENT
&& r
== 0)
1116 if (IN_SET(de
->d_type
, DT_UNKNOWN
, DT_DIR
)) {
1117 q
= item_do_children(i
, p
, action
);
1118 if (q
< 0 && r
== 0)
1126 static int glob_item(Item
*i
, action_t action
, bool recursive
) {
1127 _cleanup_globfree_ glob_t g
= {
1128 .gl_opendir
= (void *(*)(const char *)) opendir_nomod
,
1133 k
= safe_glob(i
->path
, GLOB_NOSORT
|GLOB_BRACE
, &g
);
1134 if (k
< 0 && k
!= -ENOENT
)
1135 return log_error_errno(k
, "glob(%s) failed: %m", i
->path
);
1137 STRV_FOREACH(fn
, g
.gl_pathv
) {
1139 if (k
< 0 && r
== 0)
1143 k
= item_do_children(i
, *fn
, action
);
1144 if (k
< 0 && r
== 0)
1157 _CREATION_MODE_INVALID
= -1
1160 static const char *creation_mode_verb_table
[_CREATION_MODE_MAX
] = {
1161 [CREATION_NORMAL
] = "Created",
1162 [CREATION_EXISTING
] = "Found existing",
1163 [CREATION_FORCE
] = "Created replacement",
1166 DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb
, CreationMode
);
1168 static int create_item(Item
*i
) {
1172 CreationMode creation
;
1176 log_debug("Running create action for entry %c %s", (char) i
->type
, i
->path
);
1181 case IGNORE_DIRECTORY_PATH
:
1183 case RECURSIVE_REMOVE_PATH
:
1188 r
= write_one_file(i
, i
->path
);
1194 log_debug("Copying tree \"%s\" to \"%s\".", i
->argument
, i
->path
);
1195 r
= copy_tree(i
->argument
, i
->path
, i
->uid_set
? i
->uid
: UID_INVALID
, i
->gid_set
? i
->gid
: GID_INVALID
, COPY_REFLINK
);
1197 if (r
== -EROFS
&& stat(i
->path
, &st
) == 0)
1204 return log_error_errno(r
, "Failed to copy files to %s: %m", i
->path
);
1206 if (stat(i
->argument
, &a
) < 0)
1207 return log_error_errno(errno
, "stat(%s) failed: %m", i
->argument
);
1209 if (stat(i
->path
, &b
) < 0)
1210 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1212 if ((a
.st_mode
^ b
.st_mode
) & S_IFMT
) {
1213 log_debug("Can't copy to %s, file exists already and is of different type", i
->path
);
1218 r
= path_set_perms(i
, i
->path
);
1225 r
= glob_item(i
, write_one_file
, false);
1231 case CREATE_DIRECTORY
:
1232 case TRUNCATE_DIRECTORY
:
1233 case CREATE_SUBVOLUME
:
1234 case CREATE_SUBVOLUME_INHERIT_QUOTA
:
1235 case CREATE_SUBVOLUME_NEW_QUOTA
:
1236 RUN_WITH_UMASK(0000)
1237 mkdir_parents_label(i
->path
, 0755);
1239 if (IN_SET(i
->type
, CREATE_SUBVOLUME
, CREATE_SUBVOLUME_INHERIT_QUOTA
, CREATE_SUBVOLUME_NEW_QUOTA
)) {
1241 if (btrfs_is_subvol(isempty(arg_root
) ? "/" : arg_root
) <= 0)
1243 /* Don't create a subvolume unless the
1244 * root directory is one, too. We do
1245 * this under the assumption that if
1246 * the root directory is just a plain
1247 * directory (i.e. very light-weight),
1248 * we shouldn't try to split it up
1249 * into subvolumes (i.e. more
1250 * heavy-weight). Thus, chroot()
1251 * environments and suchlike will get
1252 * a full brtfs subvolume set up below
1253 * their tree only if they
1254 * specifically set up a btrfs
1255 * subvolume for the root dir too. */
1259 RUN_WITH_UMASK((~i
->mode
) & 0777)
1260 r
= btrfs_subvol_make(i
->path
);
1265 if (IN_SET(i
->type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
) || r
== -ENOTTY
)
1266 RUN_WITH_UMASK(0000)
1267 r
= mkdir_label(i
->path
, i
->mode
);
1272 if (!IN_SET(r
, -EEXIST
, -EROFS
))
1273 return log_error_errno(r
, "Failed to create directory or subvolume \"%s\": %m", i
->path
);
1275 k
= is_dir(i
->path
, false);
1276 if (k
== -ENOENT
&& r
== -EROFS
)
1277 return log_error_errno(r
, "%s does not exist and cannot be created as the file system is read-only.", i
->path
);
1279 return log_error_errno(k
, "Failed to check if %s exists: %m", i
->path
);
1281 log_warning("\"%s\" already exists and is not a directory.", i
->path
);
1285 creation
= CREATION_EXISTING
;
1287 creation
= CREATION_NORMAL
;
1289 log_debug("%s directory \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1291 if (IN_SET(i
->type
, CREATE_SUBVOLUME_NEW_QUOTA
, CREATE_SUBVOLUME_INHERIT_QUOTA
)) {
1292 r
= btrfs_subvol_auto_qgroup(i
->path
, 0, i
->type
== CREATE_SUBVOLUME_NEW_QUOTA
);
1294 log_debug_errno(r
, "Couldn't adjust quota for subvolume \"%s\" (unsupported fs or dir not a subvolume): %m", i
->path
);
1295 else if (r
== -EROFS
)
1296 log_debug_errno(r
, "Couldn't adjust quota for subvolume \"%s\" (fs is read-only).", i
->path
);
1297 else if (r
== -ENOPROTOOPT
)
1298 log_debug_errno(r
, "Couldn't adjust quota for subvolume \"%s\" (quota support is disabled).", i
->path
);
1300 q
= log_error_errno(r
, "Failed to adjust quota for subvolume \"%s\": %m", i
->path
);
1302 log_debug("Adjusted quota for subvolume \"%s\".", i
->path
);
1304 log_debug("Quota for subvolume \"%s\" already in place, no change made.", i
->path
);
1308 case EMPTY_DIRECTORY
:
1309 r
= path_set_perms(i
, i
->path
);
1318 RUN_WITH_UMASK(0000) {
1319 mac_selinux_create_file_prepare(i
->path
, S_IFIFO
);
1320 r
= mkfifo(i
->path
, i
->mode
);
1321 mac_selinux_create_file_clear();
1325 if (errno
!= EEXIST
)
1326 return log_error_errno(errno
, "Failed to create fifo %s: %m", i
->path
);
1328 if (lstat(i
->path
, &st
) < 0)
1329 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1331 if (!S_ISFIFO(st
.st_mode
)) {
1334 RUN_WITH_UMASK(0000) {
1335 mac_selinux_create_file_prepare(i
->path
, S_IFIFO
);
1336 r
= mkfifo_atomic(i
->path
, i
->mode
);
1337 mac_selinux_create_file_clear();
1341 return log_error_errno(r
, "Failed to create fifo %s: %m", i
->path
);
1342 creation
= CREATION_FORCE
;
1344 log_warning("\"%s\" already exists and is not a fifo.", i
->path
);
1348 creation
= CREATION_EXISTING
;
1350 creation
= CREATION_NORMAL
;
1351 log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1353 r
= path_set_perms(i
, i
->path
);
1360 case CREATE_SYMLINK
: {
1361 mac_selinux_create_file_prepare(i
->path
, S_IFLNK
);
1362 r
= symlink(i
->argument
, i
->path
);
1363 mac_selinux_create_file_clear();
1366 _cleanup_free_
char *x
= NULL
;
1368 if (errno
!= EEXIST
)
1369 return log_error_errno(errno
, "symlink(%s, %s) failed: %m", i
->argument
, i
->path
);
1371 r
= readlink_malloc(i
->path
, &x
);
1372 if (r
< 0 || !streq(i
->argument
, x
)) {
1375 mac_selinux_create_file_prepare(i
->path
, S_IFLNK
);
1376 r
= symlink_atomic(i
->argument
, i
->path
);
1377 mac_selinux_create_file_clear();
1379 if (IN_SET(r
, -EEXIST
, -ENOTEMPTY
)) {
1380 r
= rm_rf(i
->path
, REMOVE_ROOT
|REMOVE_PHYSICAL
);
1382 return log_error_errno(r
, "rm -fr %s failed: %m", i
->path
);
1384 mac_selinux_create_file_prepare(i
->path
, S_IFLNK
);
1385 r
= symlink(i
->argument
, i
->path
) < 0 ? -errno
: 0;
1386 mac_selinux_create_file_clear();
1389 return log_error_errno(r
, "symlink(%s, %s) failed: %m", i
->argument
, i
->path
);
1391 creation
= CREATION_FORCE
;
1393 log_debug("\"%s\" is not a symlink or does not point to the correct path.", i
->path
);
1397 creation
= CREATION_EXISTING
;
1400 creation
= CREATION_NORMAL
;
1401 log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1405 case CREATE_BLOCK_DEVICE
:
1406 case CREATE_CHAR_DEVICE
: {
1409 if (have_effective_cap(CAP_MKNOD
) == 0) {
1410 /* In a container we lack CAP_MKNOD. We
1411 shouldn't attempt to create the device node in
1412 that case to avoid noise, and we don't support
1413 virtualized devices in containers anyway. */
1415 log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i
->path
);
1419 file_type
= i
->type
== CREATE_BLOCK_DEVICE
? S_IFBLK
: S_IFCHR
;
1421 RUN_WITH_UMASK(0000) {
1422 mac_selinux_create_file_prepare(i
->path
, file_type
);
1423 r
= mknod(i
->path
, i
->mode
| file_type
, i
->major_minor
);
1424 mac_selinux_create_file_clear();
1428 if (errno
== EPERM
) {
1429 log_debug("We lack permissions, possibly because of cgroup configuration; "
1430 "skipping creation of device node %s.", i
->path
);
1434 if (errno
!= EEXIST
)
1435 return log_error_errno(errno
, "Failed to create device node %s: %m", i
->path
);
1437 if (lstat(i
->path
, &st
) < 0)
1438 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1440 if ((st
.st_mode
& S_IFMT
) != file_type
) {
1444 RUN_WITH_UMASK(0000) {
1445 mac_selinux_create_file_prepare(i
->path
, file_type
);
1446 r
= mknod_atomic(i
->path
, i
->mode
| file_type
, i
->major_minor
);
1447 mac_selinux_create_file_clear();
1451 return log_error_errno(r
, "Failed to create device node \"%s\": %m", i
->path
);
1452 creation
= CREATION_FORCE
;
1454 log_debug("%s is not a device node.", i
->path
);
1458 creation
= CREATION_EXISTING
;
1460 creation
= CREATION_NORMAL
;
1462 log_debug("%s %s device node \"%s\" %u:%u.",
1463 creation_mode_verb_to_string(creation
),
1464 i
->type
== CREATE_BLOCK_DEVICE
? "block" : "char",
1465 i
->path
, major(i
->mode
), minor(i
->mode
));
1467 r
= path_set_perms(i
, i
->path
);
1476 r
= glob_item(i
, path_set_perms
, false);
1481 case RECURSIVE_RELABEL_PATH
:
1482 r
= glob_item(i
, path_set_perms
, true);
1488 r
= glob_item(i
, path_set_xattrs
, false);
1493 case RECURSIVE_SET_XATTR
:
1494 r
= glob_item(i
, path_set_xattrs
, true);
1500 r
= glob_item(i
, path_set_acls
, false);
1505 case RECURSIVE_SET_ACL
:
1506 r
= glob_item(i
, path_set_acls
, true);
1512 r
= glob_item(i
, path_set_attribute
, false);
1517 case RECURSIVE_SET_ATTRIBUTE
:
1518 r
= glob_item(i
, path_set_attribute
, true);
1527 static int remove_item_instance(Item
*i
, const char *instance
) {
1535 if (remove(instance
) < 0 && errno
!= ENOENT
)
1536 return log_error_errno(errno
, "rm(%s): %m", instance
);
1540 case TRUNCATE_DIRECTORY
:
1541 case RECURSIVE_REMOVE_PATH
:
1542 /* FIXME: we probably should use dir_cleanup() here
1543 * instead of rm_rf() so that 'x' is honoured. */
1544 log_debug("rm -rf \"%s\"", instance
);
1545 r
= rm_rf(instance
, (i
->type
== RECURSIVE_REMOVE_PATH
? REMOVE_ROOT
|REMOVE_SUBVOLUME
: 0) | REMOVE_PHYSICAL
);
1546 if (r
< 0 && r
!= -ENOENT
)
1547 return log_error_errno(r
, "rm_rf(%s): %m", instance
);
1552 assert_not_reached("wut?");
1558 static int remove_item(Item
*i
) {
1561 log_debug("Running remove action for entry %c %s", (char) i
->type
, i
->path
);
1566 case TRUNCATE_DIRECTORY
:
1567 case RECURSIVE_REMOVE_PATH
:
1568 return glob_item(i
, remove_item_instance
, false);
1575 static int clean_item_instance(Item
*i
, const char* instance
) {
1576 _cleanup_closedir_
DIR *d
= NULL
;
1580 char timestamp
[FORMAT_TIMESTAMP_MAX
];
1587 n
= now(CLOCK_REALTIME
);
1591 cutoff
= n
- i
->age
;
1593 d
= opendir_nomod(instance
);
1595 if (IN_SET(errno
, ENOENT
, ENOTDIR
)) {
1596 log_debug_errno(errno
, "Directory \"%s\": %m", instance
);
1600 return log_error_errno(errno
, "Failed to open directory %s: %m", instance
);
1603 if (fstat(dirfd(d
), &s
) < 0)
1604 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1606 if (!S_ISDIR(s
.st_mode
)) {
1607 log_error("%s is not a directory.", i
->path
);
1611 if (fstatat(dirfd(d
), "..", &ps
, AT_SYMLINK_NOFOLLOW
) != 0)
1612 return log_error_errno(errno
, "stat(%s/..) failed: %m", i
->path
);
1614 mountpoint
= s
.st_dev
!= ps
.st_dev
|| s
.st_ino
== ps
.st_ino
;
1616 log_debug("Cleanup threshold for %s \"%s\" is %s",
1617 mountpoint
? "mount point" : "directory",
1619 format_timestamp_us(timestamp
, sizeof(timestamp
), cutoff
));
1621 return dir_cleanup(i
, instance
, d
, &s
, cutoff
, s
.st_dev
, mountpoint
,
1622 MAX_DEPTH
, i
->keep_first_level
);
1625 static int clean_item(Item
*i
) {
1628 log_debug("Running clean action for entry %c %s", (char) i
->type
, i
->path
);
1631 case CREATE_DIRECTORY
:
1632 case CREATE_SUBVOLUME
:
1633 case CREATE_SUBVOLUME_INHERIT_QUOTA
:
1634 case CREATE_SUBVOLUME_NEW_QUOTA
:
1635 case EMPTY_DIRECTORY
:
1636 case TRUNCATE_DIRECTORY
:
1639 clean_item_instance(i
, i
->path
);
1641 case IGNORE_DIRECTORY_PATH
:
1642 return glob_item(i
, clean_item_instance
, false);
1648 static int process_item_array(ItemArray
*array
);
1650 static int process_item(Item
*i
) {
1652 _cleanup_free_
char *prefix
= NULL
;
1661 prefix
= malloc(strlen(i
->path
) + 1);
1665 PATH_FOREACH_PREFIX(prefix
, i
->path
) {
1668 j
= ordered_hashmap_get(items
, prefix
);
1672 s
= process_item_array(j
);
1673 if (s
< 0 && t
== 0)
1678 if (chase_symlinks(i
->path
, NULL
, CHASE_NO_AUTOFS
, NULL
) == -EREMOTE
)
1681 r
= arg_create
? create_item(i
) : 0;
1682 q
= arg_remove
? remove_item(i
) : 0;
1683 p
= arg_clean
? clean_item(i
) : 0;
1691 static int process_item_array(ItemArray
*array
) {
1697 for (n
= 0; n
< array
->count
; n
++) {
1698 k
= process_item(array
->items
+ n
);
1699 if (k
< 0 && r
== 0)
1706 static void item_free_contents(Item
*i
) {
1710 strv_free(i
->xattrs
);
1713 acl_free(i
->acl_access
);
1714 acl_free(i
->acl_default
);
1718 static void item_array_free(ItemArray
*a
) {
1724 for (n
= 0; n
< a
->count
; n
++)
1725 item_free_contents(a
->items
+ n
);
1730 static int item_compare(const void *a
, const void *b
) {
1731 const Item
*x
= a
, *y
= b
;
1733 /* Make sure that the ownership taking item is put first, so
1734 * that we first create the node, and then can adjust it */
1736 if (takes_ownership(x
->type
) && !takes_ownership(y
->type
))
1738 if (!takes_ownership(x
->type
) && takes_ownership(y
->type
))
1741 return (int) x
->type
- (int) y
->type
;
1744 static bool item_compatible(Item
*a
, Item
*b
) {
1747 assert(streq(a
->path
, b
->path
));
1749 if (takes_ownership(a
->type
) && takes_ownership(b
->type
))
1750 /* check if the items are the same */
1751 return streq_ptr(a
->argument
, b
->argument
) &&
1753 a
->uid_set
== b
->uid_set
&&
1756 a
->gid_set
== b
->gid_set
&&
1759 a
->mode_set
== b
->mode_set
&&
1760 a
->mode
== b
->mode
&&
1762 a
->age_set
== b
->age_set
&&
1765 a
->mask_perms
== b
->mask_perms
&&
1767 a
->keep_first_level
== b
->keep_first_level
&&
1769 a
->major_minor
== b
->major_minor
;
1774 static bool should_include_path(const char *path
) {
1777 STRV_FOREACH(prefix
, arg_exclude_prefixes
)
1778 if (path_startswith(path
, *prefix
)) {
1779 log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.",
1784 STRV_FOREACH(prefix
, arg_include_prefixes
)
1785 if (path_startswith(path
, *prefix
)) {
1786 log_debug("Entry \"%s\" matches include prefix \"%s\".", path
, *prefix
);
1790 /* no matches, so we should include this path only if we
1791 * have no whitelist at all */
1792 if (strv_isempty(arg_include_prefixes
))
1795 log_debug("Entry \"%s\" does not match any include prefix, skipping.", path
);
1799 static int specifier_expansion_from_arg(Item
*i
) {
1800 _cleanup_free_
char *unescaped
= NULL
, *resolved
= NULL
;
1806 if (i
->argument
== NULL
)
1811 case CREATE_SYMLINK
:
1815 r
= cunescape(i
->argument
, 0, &unescaped
);
1817 return log_error_errno(r
, "Failed to unescape parameter to write: %s", i
->argument
);
1819 r
= specifier_printf(unescaped
, specifier_table
, NULL
, &resolved
);
1823 free_and_replace(i
->argument
, resolved
);
1827 case RECURSIVE_SET_XATTR
:
1830 STRV_FOREACH (xattr
, i
->xattrs
) {
1831 r
= specifier_printf(*xattr
, specifier_table
, NULL
, &resolved
);
1835 free_and_replace(*xattr
, resolved
);
1845 static int parse_line(const char *fname
, unsigned line
, const char *buffer
, bool *invalid_config
) {
1847 _cleanup_free_
char *action
= NULL
, *mode
= NULL
, *user
= NULL
, *group
= NULL
, *age
= NULL
, *path
= NULL
;
1848 _cleanup_(item_free_contents
) Item i
= {};
1849 ItemArray
*existing
;
1852 bool force
= false, boot
= false;
1858 r
= extract_many_words(
1870 if (IN_SET(r
, -EINVAL
, -EBADSLT
))
1871 /* invalid quoting and such or an unknown specifier */
1872 *invalid_config
= true;
1873 return log_error_errno(r
, "[%s:%u] Failed to parse line: %m", fname
, line
);
1877 *invalid_config
= true;
1878 log_error("[%s:%u] Syntax error.", fname
, line
);
1882 if (!isempty(buffer
) && !streq(buffer
, "-")) {
1883 i
.argument
= strdup(buffer
);
1888 if (isempty(action
)) {
1889 *invalid_config
= true;
1890 log_error("[%s:%u] Command too short '%s'.", fname
, line
, action
);
1894 for (pos
= 1; action
[pos
]; pos
++) {
1895 if (action
[pos
] == '!' && !boot
)
1897 else if (action
[pos
] == '+' && !force
)
1900 *invalid_config
= true;
1901 log_error("[%s:%u] Unknown modifiers in command '%s'",
1902 fname
, line
, action
);
1907 if (boot
&& !arg_boot
) {
1908 log_debug("Ignoring entry %s \"%s\" because --boot is not specified.",
1916 r
= specifier_printf(path
, specifier_table
, NULL
, &i
.path
);
1918 return log_unresolvable_specifier(fname
, line
);
1920 if (IN_SET(r
, -EINVAL
, -EBADSLT
))
1921 *invalid_config
= true;
1922 return log_error_errno(r
, "[%s:%u] Failed to replace specifiers: %s", fname
, line
, path
);
1927 case CREATE_DIRECTORY
:
1928 case CREATE_SUBVOLUME
:
1929 case CREATE_SUBVOLUME_INHERIT_QUOTA
:
1930 case CREATE_SUBVOLUME_NEW_QUOTA
:
1931 case EMPTY_DIRECTORY
:
1932 case TRUNCATE_DIRECTORY
:
1935 case IGNORE_DIRECTORY_PATH
:
1937 case RECURSIVE_REMOVE_PATH
:
1940 case RECURSIVE_RELABEL_PATH
:
1942 log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname
, line
, i
.type
);
1950 case CREATE_SYMLINK
:
1952 i
.argument
= strappend("/usr/share/factory/", i
.path
);
1960 *invalid_config
= true;
1961 log_error("[%s:%u] Write file requires argument.", fname
, line
);
1968 i
.argument
= strappend("/usr/share/factory/", i
.path
);
1971 } else if (!path_is_absolute(i
.argument
)) {
1972 *invalid_config
= true;
1973 log_error("[%s:%u] Source path is not absolute.", fname
, line
);
1977 path_kill_slashes(i
.argument
);
1980 case CREATE_CHAR_DEVICE
:
1981 case CREATE_BLOCK_DEVICE
: {
1982 unsigned major
, minor
;
1985 *invalid_config
= true;
1986 log_error("[%s:%u] Device file requires argument.", fname
, line
);
1990 if (sscanf(i
.argument
, "%u:%u", &major
, &minor
) != 2) {
1991 *invalid_config
= true;
1992 log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname
, line
, i
.argument
);
1996 i
.major_minor
= makedev(major
, minor
);
2001 case RECURSIVE_SET_XATTR
:
2003 *invalid_config
= true;
2004 log_error("[%s:%u] Set extended attribute requires argument.", fname
, line
);
2007 r
= parse_xattrs_from_arg(&i
);
2013 case RECURSIVE_SET_ACL
:
2015 *invalid_config
= true;
2016 log_error("[%s:%u] Set ACLs requires argument.", fname
, line
);
2019 r
= parse_acls_from_arg(&i
);
2025 case RECURSIVE_SET_ATTRIBUTE
:
2027 *invalid_config
= true;
2028 log_error("[%s:%u] Set file attribute requires argument.", fname
, line
);
2031 r
= parse_attribute_from_arg(&i
);
2032 if (IN_SET(r
, -EINVAL
, -EBADSLT
))
2033 *invalid_config
= true;
2039 log_error("[%s:%u] Unknown command type '%c'.", fname
, line
, (char) i
.type
);
2040 *invalid_config
= true;
2044 if (!path_is_absolute(i
.path
)) {
2045 log_error("[%s:%u] Path '%s' not absolute.", fname
, line
, i
.path
);
2046 *invalid_config
= true;
2050 path_kill_slashes(i
.path
);
2052 if (!should_include_path(i
.path
))
2055 r
= specifier_expansion_from_arg(&i
);
2057 return log_unresolvable_specifier(fname
, line
);
2059 if (IN_SET(r
, -EINVAL
, -EBADSLT
))
2060 *invalid_config
= true;
2061 return log_error_errno(r
, "[%s:%u] Failed to substitute specifiers in argument: %m",
2068 p
= prefix_root(arg_root
, i
.path
);
2076 if (!isempty(user
) && !streq(user
, "-")) {
2077 const char *u
= user
;
2079 r
= get_user_creds(&u
, &i
.uid
, NULL
, NULL
, NULL
);
2081 *invalid_config
= true;
2082 return log_error_errno(r
, "[%s:%u] Unknown user '%s'.", fname
, line
, user
);
2088 if (!isempty(group
) && !streq(group
, "-")) {
2089 const char *g
= group
;
2091 r
= get_group_creds(&g
, &i
.gid
);
2093 *invalid_config
= true;
2094 log_error("[%s:%u] Unknown group '%s'.", fname
, line
, group
);
2101 if (!isempty(mode
) && !streq(mode
, "-")) {
2102 const char *mm
= mode
;
2106 i
.mask_perms
= true;
2110 if (parse_mode(mm
, &m
) < 0) {
2111 *invalid_config
= true;
2112 log_error("[%s:%u] Invalid mode '%s'.", fname
, line
, mode
);
2119 i
.mode
= IN_SET(i
.type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
, CREATE_SUBVOLUME
, CREATE_SUBVOLUME_INHERIT_QUOTA
, CREATE_SUBVOLUME_NEW_QUOTA
) ? 0755 : 0644;
2121 if (!isempty(age
) && !streq(age
, "-")) {
2122 const char *a
= age
;
2125 i
.keep_first_level
= true;
2129 if (parse_sec(a
, &i
.age
) < 0) {
2130 *invalid_config
= true;
2131 log_error("[%s:%u] Invalid age '%s'.", fname
, line
, age
);
2138 h
= needs_glob(i
.type
) ? globs
: items
;
2140 existing
= ordered_hashmap_get(h
, i
.path
);
2144 for (n
= 0; n
< existing
->count
; n
++) {
2145 if (!item_compatible(existing
->items
+ n
, &i
)) {
2146 log_notice("[%s:%u] Duplicate line for path \"%s\", ignoring.",
2147 fname
, line
, i
.path
);
2152 existing
= new0(ItemArray
, 1);
2153 r
= ordered_hashmap_put(h
, i
.path
, existing
);
2158 if (!GREEDY_REALLOC(existing
->items
, existing
->size
, existing
->count
+ 1))
2161 memcpy(existing
->items
+ existing
->count
++, &i
, sizeof(i
));
2163 /* Sort item array, to enforce stable ordering of application */
2164 qsort_safe(existing
->items
, existing
->count
, sizeof(Item
), item_compare
);
2170 static void help(void) {
2171 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
2172 "Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
2173 " -h --help Show this help\n"
2174 " --version Show package version\n"
2175 " --create Create marked files/directories\n"
2176 " --clean Clean up marked directories\n"
2177 " --remove Remove marked files/directories\n"
2178 " --boot Execute actions only safe at boot\n"
2179 " --prefix=PATH Only apply rules with the specified prefix\n"
2180 " --exclude-prefix=PATH Ignore rules with the specified prefix\n"
2181 " --root=PATH Operate on an alternate filesystem root\n"
2182 , program_invocation_short_name
);
2185 static int parse_argv(int argc
, char *argv
[]) {
2188 ARG_VERSION
= 0x100,
2198 static const struct option options
[] = {
2199 { "help", no_argument
, NULL
, 'h' },
2200 { "version", no_argument
, NULL
, ARG_VERSION
},
2201 { "create", no_argument
, NULL
, ARG_CREATE
},
2202 { "clean", no_argument
, NULL
, ARG_CLEAN
},
2203 { "remove", no_argument
, NULL
, ARG_REMOVE
},
2204 { "boot", no_argument
, NULL
, ARG_BOOT
},
2205 { "prefix", required_argument
, NULL
, ARG_PREFIX
},
2206 { "exclude-prefix", required_argument
, NULL
, ARG_EXCLUDE_PREFIX
},
2207 { "root", required_argument
, NULL
, ARG_ROOT
},
2216 while ((c
= getopt_long(argc
, argv
, "h", options
, NULL
)) >= 0)
2244 if (strv_push(&arg_include_prefixes
, optarg
) < 0)
2248 case ARG_EXCLUDE_PREFIX
:
2249 if (strv_push(&arg_exclude_prefixes
, optarg
) < 0)
2254 r
= parse_path_argument_and_warn(optarg
, true, &arg_root
);
2263 assert_not_reached("Unhandled option");
2266 if (!arg_clean
&& !arg_create
&& !arg_remove
) {
2267 log_error("You need to specify at least one of --clean, --create or --remove.");
2274 static int read_config_file(const char *fn
, bool ignore_enoent
, bool *invalid_config
) {
2275 _cleanup_fclose_
FILE *_f
= NULL
;
2277 char line
[LINE_MAX
];
2285 if (streq(fn
, "-")) {
2286 log_debug("Reading config from stdin.");
2290 r
= search_and_fopen_nulstr(fn
, "re", arg_root
, conf_file_dirs
, &_f
);
2292 if (ignore_enoent
&& r
== -ENOENT
) {
2293 log_debug_errno(r
, "Failed to open \"%s\", ignoring: %m", fn
);
2297 return log_error_errno(r
, "Failed to open '%s': %m", fn
);
2299 log_debug("Reading config file \"%s\".", fn
);
2303 FOREACH_LINE(line
, f
, break) {
2306 bool invalid_line
= false;
2311 if (IN_SET(*l
, 0, '#'))
2314 k
= parse_line(fn
, v
, l
, &invalid_line
);
2317 /* Allow reporting with a special code if the caller requested this */
2318 *invalid_config
= true;
2320 /* The first error becomes our return value */
2325 /* we have to determine age parameter for each entry of type X */
2326 ORDERED_HASHMAP_FOREACH(i
, globs
, iterator
) {
2328 Item
*j
, *candidate_item
= NULL
;
2330 if (i
->type
!= IGNORE_DIRECTORY_PATH
)
2333 ORDERED_HASHMAP_FOREACH(j
, items
, iter
) {
2334 if (!IN_SET(j
->type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
, CREATE_SUBVOLUME
, CREATE_SUBVOLUME_INHERIT_QUOTA
, CREATE_SUBVOLUME_NEW_QUOTA
))
2337 if (path_equal(j
->path
, i
->path
)) {
2342 if ((!candidate_item
&& path_startswith(i
->path
, j
->path
)) ||
2343 (candidate_item
&& path_startswith(j
->path
, candidate_item
->path
) && (fnmatch(i
->path
, j
->path
, FNM_PATHNAME
| FNM_PERIOD
) == 0)))
2347 if (candidate_item
&& candidate_item
->age_set
) {
2348 i
->age
= candidate_item
->age
;
2354 log_error_errno(errno
, "Failed to read from file %s: %m", fn
);
2362 int main(int argc
, char *argv
[]) {
2366 bool invalid_config
= false;
2368 r
= parse_argv(argc
, argv
);
2372 log_set_target(LOG_TARGET_AUTO
);
2373 log_parse_environment();
2380 items
= ordered_hashmap_new(&string_hash_ops
);
2381 globs
= ordered_hashmap_new(&string_hash_ops
);
2383 if (!items
|| !globs
) {
2390 if (optind
< argc
) {
2393 for (j
= optind
; j
< argc
; j
++) {
2394 k
= read_config_file(argv
[j
], false, &invalid_config
);
2395 if (k
< 0 && r
== 0)
2400 _cleanup_strv_free_
char **files
= NULL
;
2403 r
= conf_files_list_nulstr(&files
, ".conf", arg_root
, 0, conf_file_dirs
);
2405 log_error_errno(r
, "Failed to enumerate tmpfiles.d files: %m");
2409 STRV_FOREACH(f
, files
) {
2410 k
= read_config_file(*f
, true, &invalid_config
);
2411 if (k
< 0 && r
== 0)
2416 /* The non-globbing ones usually create things, hence we apply
2418 ORDERED_HASHMAP_FOREACH(a
, items
, iterator
) {
2419 k
= process_item_array(a
);
2420 if (k
< 0 && r
== 0)
2424 /* The globbing ones usually alter things, hence we apply them
2426 ORDERED_HASHMAP_FOREACH(a
, globs
, iterator
) {
2427 k
= process_item_array(a
);
2428 if (k
< 0 && r
== 0)
2433 ordered_hashmap_free_with_destructor(items
, item_array_free
);
2434 ordered_hashmap_free_with_destructor(globs
, item_array_free
);
2436 free(arg_include_prefixes
);
2437 free(arg_exclude_prefixes
);
2440 set_free_free(unix_sockets
);
2442 mac_selinux_finish();
2445 return EXIT_FAILURE
;
2446 else if (invalid_config
)
2449 return EXIT_SUCCESS
;