2 This file is part of systemd.
4 Copyright 2010 Lennart Poettering, Kay Sievers
5 Copyright 2015 Zbigniew Jędrzejewski-Szmek
7 systemd is free software; you can redistribute it and/or modify it
8 under the terms of the GNU Lesser General Public License as published by
9 the Free Software Foundation; either version 2.1 of the License, or
10 (at your option) any later version.
12 systemd is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public License
18 along with systemd; If not, see <http://www.gnu.org/licenses/>.
35 #include <sys/xattr.h>
40 #include "alloc-util.h"
41 #include "btrfs-util.h"
42 #include "capability-util.h"
43 #include "chattr-util.h"
44 #include "conf-files.h"
50 #include "formats-util.h"
52 #include "glob-util.h"
59 #include "mount-util.h"
60 #include "parse-util.h"
61 #include "path-util.h"
63 #include "selinux-util.h"
65 #include "specifier.h"
66 #include "stat-util.h"
67 #include "stdio-util.h"
68 #include "string-table.h"
69 #include "string-util.h"
71 #include "umask-util.h"
72 #include "user-util.h"
75 /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates
76 * them in the file system. This is intended to be used to create
77 * properly owned directories beneath /tmp, /var/tmp, /run, which are
78 * volatile and hence need to be recreated on bootup. */
80 typedef enum ItemType
{
81 /* These ones take file names */
84 CREATE_DIRECTORY
= 'd',
85 TRUNCATE_DIRECTORY
= 'D',
86 CREATE_SUBVOLUME
= 'v',
87 CREATE_SUBVOLUME_INHERIT_QUOTA
= 'q',
88 CREATE_SUBVOLUME_NEW_QUOTA
= 'Q',
91 CREATE_CHAR_DEVICE
= 'c',
92 CREATE_BLOCK_DEVICE
= 'b',
95 /* These ones take globs */
98 RECURSIVE_SET_XATTR
= 'T',
100 RECURSIVE_SET_ACL
= 'A',
102 RECURSIVE_SET_ATTRIBUTE
= 'H',
104 IGNORE_DIRECTORY_PATH
= 'X',
106 RECURSIVE_REMOVE_PATH
= 'R',
108 RECURSIVE_RELABEL_PATH
= 'Z',
109 ADJUST_MODE
= 'm', /* legacy, 'z' is identical to this */
112 typedef struct Item
{
128 unsigned attribute_value
;
129 unsigned attribute_mask
;
136 bool attribute_set
:1;
138 bool keep_first_level
:1;
145 typedef struct ItemArray
{
151 static bool arg_create
= false;
152 static bool arg_clean
= false;
153 static bool arg_remove
= false;
154 static bool arg_boot
= false;
156 static char **arg_include_prefixes
= NULL
;
157 static char **arg_exclude_prefixes
= NULL
;
158 static char *arg_root
= NULL
;
160 static const char conf_file_dirs
[] = CONF_PATHS_NULSTR("tmpfiles.d");
162 #define MAX_DEPTH 256
164 static OrderedHashmap
*items
= NULL
, *globs
= NULL
;
165 static Set
*unix_sockets
= NULL
;
167 static const Specifier specifier_table
[] = {
168 { 'm', specifier_machine_id
, NULL
},
169 { 'b', specifier_boot_id
, NULL
},
170 { 'H', specifier_host_name
, NULL
},
171 { 'v', specifier_kernel_release
, NULL
},
175 static bool needs_glob(ItemType t
) {
179 IGNORE_DIRECTORY_PATH
,
181 RECURSIVE_REMOVE_PATH
,
184 RECURSIVE_RELABEL_PATH
,
190 RECURSIVE_SET_ATTRIBUTE
);
193 static bool takes_ownership(ItemType t
) {
200 CREATE_SUBVOLUME_INHERIT_QUOTA
,
201 CREATE_SUBVOLUME_NEW_QUOTA
,
209 IGNORE_DIRECTORY_PATH
,
211 RECURSIVE_REMOVE_PATH
);
214 static struct Item
* find_glob(OrderedHashmap
*h
, const char *match
) {
218 ORDERED_HASHMAP_FOREACH(j
, h
, i
) {
221 for (n
= 0; n
< j
->count
; n
++) {
222 Item
*item
= j
->items
+ n
;
224 if (fnmatch(item
->path
, match
, FNM_PATHNAME
|FNM_PERIOD
) == 0)
232 static void load_unix_sockets(void) {
233 _cleanup_fclose_
FILE *f
= NULL
;
239 /* We maintain a cache of the sockets we found in
240 * /proc/net/unix to speed things up a little. */
242 unix_sockets
= set_new(&string_hash_ops
);
246 f
= fopen("/proc/net/unix", "re");
251 if (!fgets(line
, sizeof(line
), f
))
258 if (!fgets(line
, sizeof(line
), f
))
263 p
= strchr(line
, ':');
271 p
+= strspn(p
, WHITESPACE
);
272 p
+= strcspn(p
, WHITESPACE
); /* skip one more word */
273 p
+= strspn(p
, WHITESPACE
);
282 path_kill_slashes(s
);
284 k
= set_consume(unix_sockets
, s
);
285 if (k
< 0 && k
!= -EEXIST
)
292 set_free_free(unix_sockets
);
296 static bool unix_socket_alive(const char *fn
) {
302 return !!set_get(unix_sockets
, (char*) fn
);
304 /* We don't know, so assume yes */
308 static int dir_is_mount_point(DIR *d
, const char *subdir
) {
310 union file_handle_union h
= FILE_HANDLE_INIT
;
311 int mount_id_parent
, mount_id
;
314 r_p
= name_to_handle_at(dirfd(d
), ".", &h
.handle
, &mount_id_parent
, 0);
318 h
.handle
.handle_bytes
= MAX_HANDLE_SZ
;
319 r
= name_to_handle_at(dirfd(d
), subdir
, &h
.handle
, &mount_id
, 0);
323 /* got no handle; make no assumptions, return error */
324 if (r_p
< 0 && r
< 0)
327 /* got both handles; if they differ, it is a mount point */
328 if (r_p
>= 0 && r
>= 0)
329 return mount_id_parent
!= mount_id
;
331 /* got only one handle; assume different mount points if one
332 * of both queries was not supported by the filesystem */
333 if (r_p
== -ENOSYS
|| r_p
== -EOPNOTSUPP
|| r
== -ENOSYS
|| r
== -EOPNOTSUPP
)
342 static DIR* xopendirat_nomod(int dirfd
, const char *path
) {
345 dir
= xopendirat(dirfd
, path
, O_NOFOLLOW
|O_NOATIME
);
349 log_debug_errno(errno
, "Cannot open %sdirectory \"%s\": %m", dirfd
== AT_FDCWD
? "" : "sub", path
);
353 dir
= xopendirat(dirfd
, path
, O_NOFOLLOW
);
355 log_debug_errno(errno
, "Cannot open %sdirectory \"%s\": %m", dirfd
== AT_FDCWD
? "" : "sub", path
);
360 static DIR* opendir_nomod(const char *path
) {
361 return xopendirat_nomod(AT_FDCWD
, path
);
364 static int dir_cleanup(
368 const struct stat
*ds
,
373 bool keep_this_level
) {
376 struct timespec times
[2];
377 bool deleted
= false;
380 while ((dent
= readdir(d
))) {
383 _cleanup_free_
char *sub_path
= NULL
;
385 if (STR_IN_SET(dent
->d_name
, ".", ".."))
388 if (fstatat(dirfd(d
), dent
->d_name
, &s
, AT_SYMLINK_NOFOLLOW
) < 0) {
392 /* FUSE, NFS mounts, SELinux might return EACCES */
394 log_debug_errno(errno
, "stat(%s/%s) failed: %m", p
, dent
->d_name
);
396 log_error_errno(errno
, "stat(%s/%s) failed: %m", p
, dent
->d_name
);
401 /* Stay on the same filesystem */
402 if (s
.st_dev
!= rootdev
) {
403 log_debug("Ignoring \"%s/%s\": different filesystem.", p
, dent
->d_name
);
407 /* Try to detect bind mounts of the same filesystem instance; they
408 * do not differ in device major/minors. This type of query is not
409 * supported on all kernels or filesystem types though. */
410 if (S_ISDIR(s
.st_mode
) && dir_is_mount_point(d
, dent
->d_name
) > 0) {
411 log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.",
416 /* Do not delete read-only files owned by root */
417 if (s
.st_uid
== 0 && !(s
.st_mode
& S_IWUSR
)) {
418 log_debug("Ignoring \"%s/%s\": read-only and owner by root.", p
, dent
->d_name
);
422 sub_path
= strjoin(p
, "/", dent
->d_name
, NULL
);
428 /* Is there an item configured for this path? */
429 if (ordered_hashmap_get(items
, sub_path
)) {
430 log_debug("Ignoring \"%s\": a separate entry exists.", sub_path
);
434 if (find_glob(globs
, sub_path
)) {
435 log_debug("Ignoring \"%s\": a separate glob exists.", sub_path
);
439 if (S_ISDIR(s
.st_mode
)) {
442 streq(dent
->d_name
, "lost+found") &&
444 log_debug("Ignoring \"%s\".", sub_path
);
449 log_warning("Reached max depth on \"%s\".", sub_path
);
451 _cleanup_closedir_
DIR *sub_dir
;
454 sub_dir
= xopendirat_nomod(dirfd(d
), dent
->d_name
);
457 r
= log_error_errno(errno
, "opendir(%s) failed: %m", sub_path
);
462 q
= dir_cleanup(i
, sub_path
, sub_dir
, &s
, cutoff
, rootdev
, false, maxdepth
-1, false);
467 /* Note: if you are wondering why we don't
468 * support the sticky bit for excluding
469 * directories from cleaning like we do it for
470 * other file system objects: well, the sticky
471 * bit already has a meaning for directories,
472 * so we don't want to overload that. */
474 if (keep_this_level
) {
475 log_debug("Keeping \"%s\".", sub_path
);
479 /* Ignore ctime, we change it when deleting */
480 age
= timespec_load(&s
.st_mtim
);
482 char a
[FORMAT_TIMESTAMP_MAX
];
483 /* Follows spelling in stat(1). */
484 log_debug("Directory \"%s\": modify time %s is too new.",
486 format_timestamp_us(a
, sizeof(a
), age
));
490 age
= timespec_load(&s
.st_atim
);
492 char a
[FORMAT_TIMESTAMP_MAX
];
493 log_debug("Directory \"%s\": access time %s is too new.",
495 format_timestamp_us(a
, sizeof(a
), age
));
499 log_debug("Removing directory \"%s\".", sub_path
);
500 if (unlinkat(dirfd(d
), dent
->d_name
, AT_REMOVEDIR
) < 0)
501 if (errno
!= ENOENT
&& errno
!= ENOTEMPTY
) {
502 log_error_errno(errno
, "rmdir(%s): %m", sub_path
);
507 /* Skip files for which the sticky bit is
508 * set. These are semantics we define, and are
509 * unknown elsewhere. See XDG_RUNTIME_DIR
510 * specification for details. */
511 if (s
.st_mode
& S_ISVTX
) {
512 log_debug("Skipping \"%s\": sticky bit set.", sub_path
);
516 if (mountpoint
&& S_ISREG(s
.st_mode
))
517 if (s
.st_uid
== 0 && STR_IN_SET(dent
->d_name
,
521 log_debug("Skipping \"%s\".", sub_path
);
525 /* Ignore sockets that are listed in /proc/net/unix */
526 if (S_ISSOCK(s
.st_mode
) && unix_socket_alive(sub_path
)) {
527 log_debug("Skipping \"%s\": live socket.", sub_path
);
531 /* Ignore device nodes */
532 if (S_ISCHR(s
.st_mode
) || S_ISBLK(s
.st_mode
)) {
533 log_debug("Skipping \"%s\": a device.", sub_path
);
537 /* Keep files on this level around if this is
539 if (keep_this_level
) {
540 log_debug("Keeping \"%s\".", sub_path
);
544 age
= timespec_load(&s
.st_mtim
);
546 char a
[FORMAT_TIMESTAMP_MAX
];
547 /* Follows spelling in stat(1). */
548 log_debug("File \"%s\": modify time %s is too new.",
550 format_timestamp_us(a
, sizeof(a
), age
));
554 age
= timespec_load(&s
.st_atim
);
556 char a
[FORMAT_TIMESTAMP_MAX
];
557 log_debug("File \"%s\": access time %s is too new.",
559 format_timestamp_us(a
, sizeof(a
), age
));
563 age
= timespec_load(&s
.st_ctim
);
565 char a
[FORMAT_TIMESTAMP_MAX
];
566 log_debug("File \"%s\": change time %s is too new.",
568 format_timestamp_us(a
, sizeof(a
), age
));
572 log_debug("unlink \"%s\"", sub_path
);
574 if (unlinkat(dirfd(d
), dent
->d_name
, 0) < 0)
576 r
= log_error_errno(errno
, "unlink(%s): %m", sub_path
);
585 char a
[FORMAT_TIMESTAMP_MAX
], b
[FORMAT_TIMESTAMP_MAX
];
587 /* Restore original directory timestamps */
588 times
[0] = ds
->st_atim
;
589 times
[1] = ds
->st_mtim
;
591 age1
= timespec_load(&ds
->st_atim
);
592 age2
= timespec_load(&ds
->st_mtim
);
593 log_debug("Restoring access and modification time on \"%s\": %s, %s",
595 format_timestamp_us(a
, sizeof(a
), age1
),
596 format_timestamp_us(b
, sizeof(b
), age2
));
597 if (futimens(dirfd(d
), times
) < 0)
598 log_error_errno(errno
, "utimensat(%s): %m", p
);
604 static int path_set_perms(Item
*i
, const char *path
) {
605 _cleanup_close_
int fd
= -1;
611 /* We open the file with O_PATH here, to make the operation
612 * somewhat atomic. Also there's unfortunately no fchmodat()
613 * with AT_SYMLINK_NOFOLLOW, hence we emulate it here via
616 fd
= open(path
, O_NOFOLLOW
|O_CLOEXEC
|O_PATH
);
618 return log_error_errno(errno
, "Adjusting owner and mode for %s failed: %m", path
);
620 if (fstatat(fd
, "", &st
, AT_EMPTY_PATH
) < 0)
621 return log_error_errno(errno
, "Failed to fstat() file %s: %m", path
);
623 if (S_ISLNK(st
.st_mode
))
624 log_debug("Skipping mode an owner fix for symlink %s.", path
);
626 char fn
[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
627 xsprintf(fn
, "/proc/self/fd/%i", fd
);
629 /* not using i->path directly because it may be a glob */
634 if (!(st
.st_mode
& 0111))
636 if (!(st
.st_mode
& 0222))
638 if (!(st
.st_mode
& 0444))
640 if (!S_ISDIR(st
.st_mode
))
641 m
&= ~07000; /* remove sticky/sgid/suid bit, unless directory */
644 if (m
== (st
.st_mode
& 07777))
645 log_debug("\"%s\" has right mode %o", path
, st
.st_mode
);
647 log_debug("chmod \"%s\" to mode %o", path
, m
);
648 if (chmod(fn
, m
) < 0)
649 return log_error_errno(errno
, "chmod(%s) failed: %m", path
);
653 if ((i
->uid
!= st
.st_uid
|| i
->gid
!= st
.st_gid
) &&
654 (i
->uid_set
|| i
->gid_set
)) {
655 log_debug("chown \"%s\" to "UID_FMT
"."GID_FMT
,
657 i
->uid_set
? i
->uid
: UID_INVALID
,
658 i
->gid_set
? i
->gid
: GID_INVALID
);
660 i
->uid_set
? i
->uid
: UID_INVALID
,
661 i
->gid_set
? i
->gid
: GID_INVALID
) < 0)
662 return log_error_errno(errno
, "chown(%s) failed: %m", path
);
668 return label_fix(path
, false, false);
671 static int parse_xattrs_from_arg(Item
*i
) {
681 _cleanup_free_
char *name
= NULL
, *value
= NULL
, *xattr
= NULL
, *xattr_replaced
= NULL
;
683 r
= extract_first_word(&p
, &xattr
, NULL
, EXTRACT_QUOTES
|EXTRACT_CUNESCAPE
);
685 log_warning_errno(r
, "Failed to parse extended attribute '%s', ignoring: %m", p
);
689 r
= specifier_printf(xattr
, specifier_table
, NULL
, &xattr_replaced
);
691 return log_error_errno(r
, "Failed to replace specifiers in extended attribute '%s': %m", xattr
);
693 r
= split_pair(xattr_replaced
, "=", &name
, &value
);
695 log_warning_errno(r
, "Failed to parse extended attribute, ignoring: %s", xattr
);
699 if (isempty(name
) || isempty(value
)) {
700 log_warning("Malformed extended attribute found, ignoring: %s", xattr
);
704 if (strv_push_pair(&i
->xattrs
, name
, value
) < 0)
713 static int path_set_xattrs(Item
*i
, const char *path
) {
714 char **name
, **value
;
719 STRV_FOREACH_PAIR(name
, value
, i
->xattrs
) {
723 log_debug("Setting extended attribute '%s=%s' on %s.", *name
, *value
, path
);
724 if (lsetxattr(path
, *name
, *value
, n
, 0) < 0) {
725 log_error("Setting extended attribute %s=%s on %s failed: %m", *name
, *value
, path
);
732 static int parse_acls_from_arg(Item
*item
) {
738 /* If force (= modify) is set, we will not modify the acl
739 * afterwards, so the mask can be added now if necessary. */
741 r
= parse_acl(item
->argument
, &item
->acl_access
, &item
->acl_default
, !item
->force
);
743 log_warning_errno(r
, "Failed to parse ACL \"%s\": %m. Ignoring", item
->argument
);
745 log_warning_errno(ENOSYS
, "ACLs are not supported. Ignoring");
752 static int path_set_acl(const char *path
, const char *pretty
, acl_type_t type
, acl_t acl
, bool modify
) {
753 _cleanup_(acl_free_charpp
) char *t
= NULL
;
754 _cleanup_(acl_freep
) acl_t dup
= NULL
;
757 /* Returns 0 for success, positive error if already warned,
758 * negative error otherwise. */
761 r
= acls_for_file(path
, type
, acl
, &dup
);
765 r
= calc_acl_mask_if_needed(&dup
);
773 /* the mask was already added earlier if needed */
776 r
= add_base_acls_if_needed(&dup
, path
);
780 t
= acl_to_any_text(dup
, NULL
, ',', TEXT_ABBREVIATE
);
781 log_debug("Setting %s ACL %s on %s.",
782 type
== ACL_TYPE_ACCESS
? "access" : "default",
785 r
= acl_set_file(path
, type
, dup
);
787 /* Return positive to indicate we already warned */
788 return -log_error_errno(errno
,
789 "Setting %s ACL \"%s\" on %s failed: %m",
790 type
== ACL_TYPE_ACCESS
? "access" : "default",
797 static int path_set_acls(Item
*item
, const char *path
) {
800 char fn
[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
801 _cleanup_close_
int fd
= -1;
807 fd
= open(path
, O_NOFOLLOW
|O_CLOEXEC
|O_PATH
);
809 return log_error_errno(errno
, "Adjusting ACL of %s failed: %m", path
);
811 if (fstatat(fd
, "", &st
, AT_EMPTY_PATH
) < 0)
812 return log_error_errno(errno
, "Failed to fstat() file %s: %m", path
);
814 if (S_ISLNK(st
.st_mode
)) {
815 log_debug("Skipping ACL fix for symlink %s.", path
);
819 xsprintf(fn
, "/proc/self/fd/%i", fd
);
821 if (item
->acl_access
)
822 r
= path_set_acl(fn
, path
, ACL_TYPE_ACCESS
, item
->acl_access
, item
->force
);
824 if (r
== 0 && item
->acl_default
)
825 r
= path_set_acl(fn
, path
, ACL_TYPE_DEFAULT
, item
->acl_default
, item
->force
);
828 return -r
; /* already warned */
829 else if (r
== -EOPNOTSUPP
) {
830 log_debug_errno(r
, "ACLs not supported by file system at %s", path
);
833 log_error_errno(r
, "ACL operation on \"%s\" failed: %m", path
);
838 #define ATTRIBUTES_ALL \
847 FS_JOURNAL_DATA_FL | \
854 static int parse_attribute_from_arg(Item
*item
) {
856 static const struct {
860 { 'A', FS_NOATIME_FL
}, /* do not update atime */
861 { 'S', FS_SYNC_FL
}, /* Synchronous updates */
862 { 'D', FS_DIRSYNC_FL
}, /* dirsync behaviour (directories only) */
863 { 'a', FS_APPEND_FL
}, /* writes to file may only append */
864 { 'c', FS_COMPR_FL
}, /* Compress file */
865 { 'd', FS_NODUMP_FL
}, /* do not dump file */
866 { 'e', FS_EXTENT_FL
}, /* Top of directory hierarchies*/
867 { 'i', FS_IMMUTABLE_FL
}, /* Immutable file */
868 { 'j', FS_JOURNAL_DATA_FL
}, /* Reserved for ext3 */
869 { 's', FS_SECRM_FL
}, /* Secure deletion */
870 { 'u', FS_UNRM_FL
}, /* Undelete */
871 { 't', FS_NOTAIL_FL
}, /* file tail should not be merged */
872 { 'T', FS_TOPDIR_FL
}, /* Top of directory hierarchies*/
873 { 'C', FS_NOCOW_FL
}, /* Do not cow file */
882 unsigned value
= 0, mask
= 0;
892 } else if (*p
== '-') {
895 } else if (*p
== '=') {
901 if (isempty(p
) && mode
!= MODE_SET
) {
902 log_error("Setting file attribute on '%s' needs an attribute specification.", item
->path
);
906 for (; p
&& *p
; p
++) {
909 for (i
= 0; i
< ELEMENTSOF(attributes
); i
++)
910 if (*p
== attributes
[i
].character
)
913 if (i
>= ELEMENTSOF(attributes
)) {
914 log_error("Unknown file attribute '%c' on '%s'.", *p
, item
->path
);
918 v
= attributes
[i
].value
;
920 SET_FLAG(value
, v
, (mode
== MODE_ADD
|| mode
== MODE_SET
));
925 if (mode
== MODE_SET
)
926 mask
|= ATTRIBUTES_ALL
;
930 item
->attribute_mask
= mask
;
931 item
->attribute_value
= value
;
932 item
->attribute_set
= true;
937 static int path_set_attribute(Item
*item
, const char *path
) {
938 _cleanup_close_
int fd
= -1;
943 if (!item
->attribute_set
|| item
->attribute_mask
== 0)
946 fd
= open(path
, O_RDONLY
|O_NONBLOCK
|O_CLOEXEC
|O_NOATIME
|O_NOFOLLOW
);
949 return log_error_errno(errno
, "Skipping file attributes adjustment on symlink %s.", path
);
951 return log_error_errno(errno
, "Cannot open '%s': %m", path
);
954 if (fstat(fd
, &st
) < 0)
955 return log_error_errno(errno
, "Cannot stat '%s': %m", path
);
957 /* Issuing the file attribute ioctls on device nodes is not
958 * safe, as that will be delivered to the drivers, not the
959 * file system containing the device node. */
960 if (!S_ISREG(st
.st_mode
) && !S_ISDIR(st
.st_mode
)) {
961 log_error("Setting file flags is only supported on regular files and directories, cannot set on '%s'.", path
);
965 f
= item
->attribute_value
& item
->attribute_mask
;
967 /* Mask away directory-specific flags */
968 if (!S_ISDIR(st
.st_mode
))
971 r
= chattr_fd(fd
, f
, item
->attribute_mask
);
973 log_full_errno(r
== -ENOTTY
? LOG_DEBUG
: LOG_WARNING
,
975 "Cannot set file attribute for '%s', value=0x%08x, mask=0x%08x: %m",
976 path
, item
->attribute_value
, item
->attribute_mask
);
981 static int write_one_file(Item
*i
, const char *path
) {
982 _cleanup_close_
int fd
= -1;
989 flags
= i
->type
== CREATE_FILE
? O_CREAT
|O_APPEND
|O_NOFOLLOW
:
990 i
->type
== TRUNCATE_FILE
? O_CREAT
|O_TRUNC
|O_NOFOLLOW
: 0;
992 RUN_WITH_UMASK(0000) {
993 mac_selinux_create_file_prepare(path
, S_IFREG
);
994 fd
= open(path
, flags
|O_NDELAY
|O_CLOEXEC
|O_WRONLY
|O_NOCTTY
, i
->mode
);
995 mac_selinux_create_file_clear();
999 if (i
->type
== WRITE_FILE
&& errno
== ENOENT
) {
1000 log_debug_errno(errno
, "Not writing \"%s\": %m", path
);
1005 if (!i
->argument
&& errno
== EROFS
&& stat(path
, &st
) == 0 &&
1006 (i
->type
== CREATE_FILE
|| st
.st_size
== 0))
1009 return log_error_errno(r
, "Failed to create file %s: %m", path
);
1013 _cleanup_free_
char *unescaped
= NULL
, *replaced
= NULL
;
1015 log_debug("%s to \"%s\".", i
->type
== CREATE_FILE
? "Appending" : "Writing", path
);
1017 r
= cunescape(i
->argument
, 0, &unescaped
);
1019 return log_error_errno(r
, "Failed to unescape parameter to write: %s", i
->argument
);
1021 r
= specifier_printf(unescaped
, specifier_table
, NULL
, &replaced
);
1023 return log_error_errno(r
, "Failed to replace specifiers in parameter to write '%s': %m", unescaped
);
1025 r
= loop_write(fd
, replaced
, strlen(replaced
), false);
1027 return log_error_errno(r
, "Failed to write file \"%s\": %m", path
);
1029 log_debug("\"%s\" has been created.", path
);
1031 fd
= safe_close(fd
);
1033 if (stat(path
, &st
) < 0)
1034 return log_error_errno(errno
, "stat(%s) failed: %m", path
);
1037 if (!S_ISREG(st
.st_mode
)) {
1038 log_error("%s is not a file.", path
);
1042 r
= path_set_perms(i
, path
);
1049 typedef int (*action_t
)(Item
*, const char *);
1051 static int item_do_children(Item
*i
, const char *path
, action_t action
) {
1052 _cleanup_closedir_
DIR *d
;
1058 /* This returns the first error we run into, but nevertheless
1061 d
= opendir_nomod(path
);
1063 return errno
== ENOENT
|| errno
== ENOTDIR
? 0 : -errno
;
1066 _cleanup_free_
char *p
= NULL
;
1073 if (errno
> 0 && r
== 0)
1079 if (STR_IN_SET(de
->d_name
, ".", ".."))
1082 p
= strjoin(path
, "/", de
->d_name
, NULL
);
1087 if (q
< 0 && q
!= -ENOENT
&& r
== 0)
1090 if (IN_SET(de
->d_type
, DT_UNKNOWN
, DT_DIR
)) {
1091 q
= item_do_children(i
, p
, action
);
1092 if (q
< 0 && r
== 0)
1100 static int glob_item(Item
*i
, action_t action
, bool recursive
) {
1101 _cleanup_globfree_ glob_t g
= {
1102 .gl_closedir
= (void (*)(void *)) closedir
,
1103 .gl_readdir
= (struct dirent
*(*)(void *)) readdir
,
1104 .gl_opendir
= (void *(*)(const char *)) opendir_nomod
,
1112 k
= glob(i
->path
, GLOB_NOSORT
|GLOB_BRACE
|GLOB_ALTDIRFUNC
, NULL
, &g
);
1113 if (k
!= 0 && k
!= GLOB_NOMATCH
)
1114 return log_error_errno(errno
?: EIO
, "glob(%s) failed: %m", i
->path
);
1116 STRV_FOREACH(fn
, g
.gl_pathv
) {
1118 if (k
< 0 && r
== 0)
1122 k
= item_do_children(i
, *fn
, action
);
1123 if (k
< 0 && r
== 0)
1136 _CREATION_MODE_INVALID
= -1
1139 static const char *creation_mode_verb_table
[_CREATION_MODE_MAX
] = {
1140 [CREATION_NORMAL
] = "Created",
1141 [CREATION_EXISTING
] = "Found existing",
1142 [CREATION_FORCE
] = "Created replacement",
1145 DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb
, CreationMode
);
1147 static int create_item(Item
*i
) {
1148 _cleanup_free_
char *resolved
= NULL
;
1152 CreationMode creation
;
1156 log_debug("Running create action for entry %c %s", (char) i
->type
, i
->path
);
1161 case IGNORE_DIRECTORY_PATH
:
1163 case RECURSIVE_REMOVE_PATH
:
1168 r
= write_one_file(i
, i
->path
);
1174 r
= specifier_printf(i
->argument
, specifier_table
, NULL
, &resolved
);
1176 return log_error_errno(r
, "Failed to substitute specifiers in copy source %s: %m", i
->argument
);
1178 log_debug("Copying tree \"%s\" to \"%s\".", resolved
, i
->path
);
1179 r
= copy_tree(resolved
, i
->path
, false);
1181 if (r
== -EROFS
&& stat(i
->path
, &st
) == 0)
1188 return log_error_errno(r
, "Failed to copy files to %s: %m", i
->path
);
1190 if (stat(resolved
, &a
) < 0)
1191 return log_error_errno(errno
, "stat(%s) failed: %m", resolved
);
1193 if (stat(i
->path
, &b
) < 0)
1194 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1196 if ((a
.st_mode
^ b
.st_mode
) & S_IFMT
) {
1197 log_debug("Can't copy to %s, file exists already and is of different type", i
->path
);
1202 r
= path_set_perms(i
, i
->path
);
1209 r
= glob_item(i
, write_one_file
, false);
1215 case CREATE_DIRECTORY
:
1216 case TRUNCATE_DIRECTORY
:
1217 case CREATE_SUBVOLUME
:
1218 case CREATE_SUBVOLUME_INHERIT_QUOTA
:
1219 case CREATE_SUBVOLUME_NEW_QUOTA
:
1221 RUN_WITH_UMASK(0000)
1222 mkdir_parents_label(i
->path
, 0755);
1224 if (IN_SET(i
->type
, CREATE_SUBVOLUME
, CREATE_SUBVOLUME_INHERIT_QUOTA
, CREATE_SUBVOLUME_NEW_QUOTA
)) {
1226 if (btrfs_is_subvol(isempty(arg_root
) ? "/" : arg_root
) <= 0)
1228 /* Don't create a subvolume unless the
1229 * root directory is one, too. We do
1230 * this under the assumption that if
1231 * the root directory is just a plain
1232 * directory (i.e. very light-weight),
1233 * we shouldn't try to split it up
1234 * into subvolumes (i.e. more
1235 * heavy-weight). Thus, chroot()
1236 * environments and suchlike will get
1237 * a full brtfs subvolume set up below
1238 * their tree only if they
1239 * specifically set up a btrfs
1240 * subvolume for the root dir too. */
1244 RUN_WITH_UMASK((~i
->mode
) & 0777)
1245 r
= btrfs_subvol_make(i
->path
);
1250 if (IN_SET(i
->type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
) || r
== -ENOTTY
)
1251 RUN_WITH_UMASK(0000)
1252 r
= mkdir_label(i
->path
, i
->mode
);
1257 if (r
!= -EEXIST
&& r
!= -EROFS
)
1258 return log_error_errno(r
, "Failed to create directory or subvolume \"%s\": %m", i
->path
);
1260 k
= is_dir(i
->path
, false);
1261 if (k
== -ENOENT
&& r
== -EROFS
)
1262 return log_error_errno(r
, "%s does not exist and cannot be created as the file system is read-only.", i
->path
);
1264 return log_error_errno(k
, "Failed to check if %s exists: %m", i
->path
);
1266 log_warning("\"%s\" already exists and is not a directory.", i
->path
);
1270 creation
= CREATION_EXISTING
;
1272 creation
= CREATION_NORMAL
;
1274 log_debug("%s directory \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1276 if (IN_SET(i
->type
, CREATE_SUBVOLUME_NEW_QUOTA
, CREATE_SUBVOLUME_INHERIT_QUOTA
)) {
1277 r
= btrfs_subvol_auto_qgroup(i
->path
, 0, i
->type
== CREATE_SUBVOLUME_NEW_QUOTA
);
1279 log_debug_errno(r
, "Couldn't adjust quota for subvolume \"%s\" because of unsupported file system or because directory is not a subvolume: %m", i
->path
);
1280 else if (r
== -EROFS
)
1281 log_debug_errno(r
, "Couldn't adjust quota for subvolume \"%s\" because of read-only file system: %m", i
->path
);
1282 else if (r
== -ENOPROTOOPT
)
1283 log_debug_errno(r
, "Couldn't adjust quota for subvolume \"%s\" because quota support is disabled: %m", i
->path
);
1285 q
= log_error_errno(r
, "Failed to adjust quota for subvolume \"%s\": %m", i
->path
);
1287 log_debug("Adjusted quota for subvolume \"%s\".", i
->path
);
1289 log_debug("Quota for subvolume \"%s\" already in place, no change made.", i
->path
);
1292 r
= path_set_perms(i
, i
->path
);
1302 RUN_WITH_UMASK(0000) {
1303 mac_selinux_create_file_prepare(i
->path
, S_IFIFO
);
1304 r
= mkfifo(i
->path
, i
->mode
);
1305 mac_selinux_create_file_clear();
1309 if (errno
!= EEXIST
)
1310 return log_error_errno(errno
, "Failed to create fifo %s: %m", i
->path
);
1312 if (lstat(i
->path
, &st
) < 0)
1313 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1315 if (!S_ISFIFO(st
.st_mode
)) {
1318 RUN_WITH_UMASK(0000) {
1319 mac_selinux_create_file_prepare(i
->path
, S_IFIFO
);
1320 r
= mkfifo_atomic(i
->path
, i
->mode
);
1321 mac_selinux_create_file_clear();
1325 return log_error_errno(r
, "Failed to create fifo %s: %m", i
->path
);
1326 creation
= CREATION_FORCE
;
1328 log_warning("\"%s\" already exists and is not a fifo.", i
->path
);
1332 creation
= CREATION_EXISTING
;
1334 creation
= CREATION_NORMAL
;
1335 log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1337 r
= path_set_perms(i
, i
->path
);
1344 case CREATE_SYMLINK
: {
1345 r
= specifier_printf(i
->argument
, specifier_table
, NULL
, &resolved
);
1347 return log_error_errno(r
, "Failed to substitute specifiers in symlink target %s: %m", i
->argument
);
1349 mac_selinux_create_file_prepare(i
->path
, S_IFLNK
);
1350 r
= symlink(resolved
, i
->path
);
1351 mac_selinux_create_file_clear();
1354 _cleanup_free_
char *x
= NULL
;
1356 if (errno
!= EEXIST
)
1357 return log_error_errno(errno
, "symlink(%s, %s) failed: %m", resolved
, i
->path
);
1359 r
= readlink_malloc(i
->path
, &x
);
1360 if (r
< 0 || !streq(resolved
, x
)) {
1363 mac_selinux_create_file_prepare(i
->path
, S_IFLNK
);
1364 r
= symlink_atomic(resolved
, i
->path
);
1365 mac_selinux_create_file_clear();
1368 return log_error_errno(r
, "symlink(%s, %s) failed: %m", resolved
, i
->path
);
1370 creation
= CREATION_FORCE
;
1372 log_debug("\"%s\" is not a symlink or does not point to the correct path.", i
->path
);
1376 creation
= CREATION_EXISTING
;
1379 creation
= CREATION_NORMAL
;
1380 log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1384 case CREATE_BLOCK_DEVICE
:
1385 case CREATE_CHAR_DEVICE
: {
1388 if (have_effective_cap(CAP_MKNOD
) == 0) {
1389 /* In a container we lack CAP_MKNOD. We
1390 shouldn't attempt to create the device node in
1391 that case to avoid noise, and we don't support
1392 virtualized devices in containers anyway. */
1394 log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i
->path
);
1398 file_type
= i
->type
== CREATE_BLOCK_DEVICE
? S_IFBLK
: S_IFCHR
;
1400 RUN_WITH_UMASK(0000) {
1401 mac_selinux_create_file_prepare(i
->path
, file_type
);
1402 r
= mknod(i
->path
, i
->mode
| file_type
, i
->major_minor
);
1403 mac_selinux_create_file_clear();
1407 if (errno
== EPERM
) {
1408 log_debug("We lack permissions, possibly because of cgroup configuration; "
1409 "skipping creation of device node %s.", i
->path
);
1413 if (errno
!= EEXIST
)
1414 return log_error_errno(errno
, "Failed to create device node %s: %m", i
->path
);
1416 if (lstat(i
->path
, &st
) < 0)
1417 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1419 if ((st
.st_mode
& S_IFMT
) != file_type
) {
1423 RUN_WITH_UMASK(0000) {
1424 mac_selinux_create_file_prepare(i
->path
, file_type
);
1425 r
= mknod_atomic(i
->path
, i
->mode
| file_type
, i
->major_minor
);
1426 mac_selinux_create_file_clear();
1430 return log_error_errno(r
, "Failed to create device node \"%s\": %m", i
->path
);
1431 creation
= CREATION_FORCE
;
1433 log_debug("%s is not a device node.", i
->path
);
1437 creation
= CREATION_EXISTING
;
1439 creation
= CREATION_NORMAL
;
1441 log_debug("%s %s device node \"%s\" %u:%u.",
1442 creation_mode_verb_to_string(creation
),
1443 i
->type
== CREATE_BLOCK_DEVICE
? "block" : "char",
1444 i
->path
, major(i
->mode
), minor(i
->mode
));
1446 r
= path_set_perms(i
, i
->path
);
1455 r
= glob_item(i
, path_set_perms
, false);
1460 case RECURSIVE_RELABEL_PATH
:
1461 r
= glob_item(i
, path_set_perms
, true);
1467 r
= glob_item(i
, path_set_xattrs
, false);
1472 case RECURSIVE_SET_XATTR
:
1473 r
= glob_item(i
, path_set_xattrs
, true);
1479 r
= glob_item(i
, path_set_acls
, false);
1484 case RECURSIVE_SET_ACL
:
1485 r
= glob_item(i
, path_set_acls
, true);
1491 r
= glob_item(i
, path_set_attribute
, false);
1496 case RECURSIVE_SET_ATTRIBUTE
:
1497 r
= glob_item(i
, path_set_attribute
, true);
1506 static int remove_item_instance(Item
*i
, const char *instance
) {
1514 if (remove(instance
) < 0 && errno
!= ENOENT
)
1515 return log_error_errno(errno
, "rm(%s): %m", instance
);
1519 case TRUNCATE_DIRECTORY
:
1520 case RECURSIVE_REMOVE_PATH
:
1521 /* FIXME: we probably should use dir_cleanup() here
1522 * instead of rm_rf() so that 'x' is honoured. */
1523 log_debug("rm -rf \"%s\"", instance
);
1524 r
= rm_rf(instance
, (i
->type
== RECURSIVE_REMOVE_PATH
? REMOVE_ROOT
|REMOVE_SUBVOLUME
: 0) | REMOVE_PHYSICAL
);
1525 if (r
< 0 && r
!= -ENOENT
)
1526 return log_error_errno(r
, "rm_rf(%s): %m", instance
);
1531 assert_not_reached("wut?");
1537 static int remove_item(Item
*i
) {
1542 log_debug("Running remove action for entry %c %s", (char) i
->type
, i
->path
);
1548 case CREATE_DIRECTORY
:
1549 case CREATE_SUBVOLUME
:
1550 case CREATE_SUBVOLUME_INHERIT_QUOTA
:
1551 case CREATE_SUBVOLUME_NEW_QUOTA
:
1553 case CREATE_SYMLINK
:
1554 case CREATE_CHAR_DEVICE
:
1555 case CREATE_BLOCK_DEVICE
:
1557 case IGNORE_DIRECTORY_PATH
:
1560 case RECURSIVE_RELABEL_PATH
:
1564 case RECURSIVE_SET_XATTR
:
1566 case RECURSIVE_SET_ACL
:
1568 case RECURSIVE_SET_ATTRIBUTE
:
1572 case TRUNCATE_DIRECTORY
:
1573 case RECURSIVE_REMOVE_PATH
:
1574 r
= glob_item(i
, remove_item_instance
, false);
1581 static int clean_item_instance(Item
*i
, const char* instance
) {
1582 _cleanup_closedir_
DIR *d
= NULL
;
1586 char timestamp
[FORMAT_TIMESTAMP_MAX
];
1593 n
= now(CLOCK_REALTIME
);
1597 cutoff
= n
- i
->age
;
1599 d
= opendir_nomod(instance
);
1601 if (errno
== ENOENT
|| errno
== ENOTDIR
) {
1602 log_debug_errno(errno
, "Directory \"%s\": %m", instance
);
1606 log_error_errno(errno
, "Failed to open directory %s: %m", instance
);
1610 if (fstat(dirfd(d
), &s
) < 0)
1611 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1613 if (!S_ISDIR(s
.st_mode
)) {
1614 log_error("%s is not a directory.", i
->path
);
1618 if (fstatat(dirfd(d
), "..", &ps
, AT_SYMLINK_NOFOLLOW
) != 0)
1619 return log_error_errno(errno
, "stat(%s/..) failed: %m", i
->path
);
1621 mountpoint
= s
.st_dev
!= ps
.st_dev
|| s
.st_ino
== ps
.st_ino
;
1623 log_debug("Cleanup threshold for %s \"%s\" is %s",
1624 mountpoint
? "mount point" : "directory",
1626 format_timestamp_us(timestamp
, sizeof(timestamp
), cutoff
));
1628 return dir_cleanup(i
, instance
, d
, &s
, cutoff
, s
.st_dev
, mountpoint
,
1629 MAX_DEPTH
, i
->keep_first_level
);
1632 static int clean_item(Item
*i
) {
1637 log_debug("Running clean action for entry %c %s", (char) i
->type
, i
->path
);
1640 case CREATE_DIRECTORY
:
1641 case CREATE_SUBVOLUME
:
1642 case CREATE_SUBVOLUME_INHERIT_QUOTA
:
1643 case CREATE_SUBVOLUME_NEW_QUOTA
:
1644 case TRUNCATE_DIRECTORY
:
1647 clean_item_instance(i
, i
->path
);
1649 case IGNORE_DIRECTORY_PATH
:
1650 r
= glob_item(i
, clean_item_instance
, false);
1659 static int process_item_array(ItemArray
*array
);
1661 static int process_item(Item
*i
) {
1663 _cleanup_free_
char *prefix
= NULL
;
1672 prefix
= malloc(strlen(i
->path
) + 1);
1676 PATH_FOREACH_PREFIX(prefix
, i
->path
) {
1679 j
= ordered_hashmap_get(items
, prefix
);
1683 s
= process_item_array(j
);
1684 if (s
< 0 && t
== 0)
1689 r
= arg_create
? create_item(i
) : 0;
1690 q
= arg_remove
? remove_item(i
) : 0;
1691 p
= arg_clean
? clean_item(i
) : 0;
1699 static int process_item_array(ItemArray
*array
) {
1705 for (n
= 0; n
< array
->count
; n
++) {
1706 k
= process_item(array
->items
+ n
);
1707 if (k
< 0 && r
== 0)
1714 static void item_free_contents(Item
*i
) {
1718 strv_free(i
->xattrs
);
1721 acl_free(i
->acl_access
);
1722 acl_free(i
->acl_default
);
1726 static void item_array_free(ItemArray
*a
) {
1732 for (n
= 0; n
< a
->count
; n
++)
1733 item_free_contents(a
->items
+ n
);
1738 static int item_compare(const void *a
, const void *b
) {
1739 const Item
*x
= a
, *y
= b
;
1741 /* Make sure that the ownership taking item is put first, so
1742 * that we first create the node, and then can adjust it */
1744 if (takes_ownership(x
->type
) && !takes_ownership(y
->type
))
1746 if (!takes_ownership(x
->type
) && takes_ownership(y
->type
))
1749 return (int) x
->type
- (int) y
->type
;
1752 static bool item_compatible(Item
*a
, Item
*b
) {
1755 assert(streq(a
->path
, b
->path
));
1757 if (takes_ownership(a
->type
) && takes_ownership(b
->type
))
1758 /* check if the items are the same */
1759 return streq_ptr(a
->argument
, b
->argument
) &&
1761 a
->uid_set
== b
->uid_set
&&
1764 a
->gid_set
== b
->gid_set
&&
1767 a
->mode_set
== b
->mode_set
&&
1768 a
->mode
== b
->mode
&&
1770 a
->age_set
== b
->age_set
&&
1773 a
->mask_perms
== b
->mask_perms
&&
1775 a
->keep_first_level
== b
->keep_first_level
&&
1777 a
->major_minor
== b
->major_minor
;
1782 static bool should_include_path(const char *path
) {
1785 STRV_FOREACH(prefix
, arg_exclude_prefixes
)
1786 if (path_startswith(path
, *prefix
)) {
1787 log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.",
1792 STRV_FOREACH(prefix
, arg_include_prefixes
)
1793 if (path_startswith(path
, *prefix
)) {
1794 log_debug("Entry \"%s\" matches include prefix \"%s\".", path
, *prefix
);
1798 /* no matches, so we should include this path only if we
1799 * have no whitelist at all */
1800 if (strv_length(arg_include_prefixes
) == 0)
1803 log_debug("Entry \"%s\" does not match any include prefix, skipping.", path
);
1807 static int parse_line(const char *fname
, unsigned line
, const char *buffer
) {
1809 _cleanup_free_
char *action
= NULL
, *mode
= NULL
, *user
= NULL
, *group
= NULL
, *age
= NULL
, *path
= NULL
;
1810 _cleanup_(item_free_contents
) Item i
= {};
1811 ItemArray
*existing
;
1814 bool force
= false, boot
= false;
1820 r
= extract_many_words(
1832 return log_error_errno(r
, "[%s:%u] Failed to parse line: %m", fname
, line
);
1834 log_error("[%s:%u] Syntax error.", fname
, line
);
1838 if (!isempty(buffer
) && !streq(buffer
, "-")) {
1839 i
.argument
= strdup(buffer
);
1844 if (isempty(action
)) {
1845 log_error("[%s:%u] Command too short '%s'.", fname
, line
, action
);
1849 for (pos
= 1; action
[pos
]; pos
++) {
1850 if (action
[pos
] == '!' && !boot
)
1852 else if (action
[pos
] == '+' && !force
)
1855 log_error("[%s:%u] Unknown modifiers in command '%s'",
1856 fname
, line
, action
);
1861 if (boot
&& !arg_boot
) {
1862 log_debug("Ignoring entry %s \"%s\" because --boot is not specified.",
1870 r
= specifier_printf(path
, specifier_table
, NULL
, &i
.path
);
1872 log_error("[%s:%u] Failed to replace specifiers: %s", fname
, line
, path
);
1878 case CREATE_DIRECTORY
:
1879 case CREATE_SUBVOLUME
:
1880 case CREATE_SUBVOLUME_INHERIT_QUOTA
:
1881 case CREATE_SUBVOLUME_NEW_QUOTA
:
1882 case TRUNCATE_DIRECTORY
:
1885 case IGNORE_DIRECTORY_PATH
:
1887 case RECURSIVE_REMOVE_PATH
:
1890 case RECURSIVE_RELABEL_PATH
:
1892 log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname
, line
, i
.type
);
1900 case CREATE_SYMLINK
:
1902 i
.argument
= strappend("/usr/share/factory/", i
.path
);
1910 log_error("[%s:%u] Write file requires argument.", fname
, line
);
1917 i
.argument
= strappend("/usr/share/factory/", i
.path
);
1920 } else if (!path_is_absolute(i
.argument
)) {
1921 log_error("[%s:%u] Source path is not absolute.", fname
, line
);
1925 path_kill_slashes(i
.argument
);
1928 case CREATE_CHAR_DEVICE
:
1929 case CREATE_BLOCK_DEVICE
: {
1930 unsigned major
, minor
;
1933 log_error("[%s:%u] Device file requires argument.", fname
, line
);
1937 if (sscanf(i
.argument
, "%u:%u", &major
, &minor
) != 2) {
1938 log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname
, line
, i
.argument
);
1942 i
.major_minor
= makedev(major
, minor
);
1947 case RECURSIVE_SET_XATTR
:
1949 log_error("[%s:%u] Set extended attribute requires argument.", fname
, line
);
1952 r
= parse_xattrs_from_arg(&i
);
1958 case RECURSIVE_SET_ACL
:
1960 log_error("[%s:%u] Set ACLs requires argument.", fname
, line
);
1963 r
= parse_acls_from_arg(&i
);
1969 case RECURSIVE_SET_ATTRIBUTE
:
1971 log_error("[%s:%u] Set file attribute requires argument.", fname
, line
);
1974 r
= parse_attribute_from_arg(&i
);
1980 log_error("[%s:%u] Unknown command type '%c'.", fname
, line
, (char) i
.type
);
1984 if (!path_is_absolute(i
.path
)) {
1985 log_error("[%s:%u] Path '%s' not absolute.", fname
, line
, i
.path
);
1989 path_kill_slashes(i
.path
);
1991 if (!should_include_path(i
.path
))
1997 p
= prefix_root(arg_root
, i
.path
);
2005 if (!isempty(user
) && !streq(user
, "-")) {
2006 const char *u
= user
;
2008 r
= get_user_creds(&u
, &i
.uid
, NULL
, NULL
, NULL
);
2010 log_error("[%s:%u] Unknown user '%s'.", fname
, line
, user
);
2017 if (!isempty(group
) && !streq(group
, "-")) {
2018 const char *g
= group
;
2020 r
= get_group_creds(&g
, &i
.gid
);
2022 log_error("[%s:%u] Unknown group '%s'.", fname
, line
, group
);
2029 if (!isempty(mode
) && !streq(mode
, "-")) {
2030 const char *mm
= mode
;
2034 i
.mask_perms
= true;
2038 if (parse_mode(mm
, &m
) < 0) {
2039 log_error("[%s:%u] Invalid mode '%s'.", fname
, line
, mode
);
2046 i
.mode
= IN_SET(i
.type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
, CREATE_SUBVOLUME
, CREATE_SUBVOLUME_INHERIT_QUOTA
, CREATE_SUBVOLUME_NEW_QUOTA
) ? 0755 : 0644;
2048 if (!isempty(age
) && !streq(age
, "-")) {
2049 const char *a
= age
;
2052 i
.keep_first_level
= true;
2056 if (parse_sec(a
, &i
.age
) < 0) {
2057 log_error("[%s:%u] Invalid age '%s'.", fname
, line
, age
);
2064 h
= needs_glob(i
.type
) ? globs
: items
;
2066 existing
= ordered_hashmap_get(h
, i
.path
);
2070 for (n
= 0; n
< existing
->count
; n
++) {
2071 if (!item_compatible(existing
->items
+ n
, &i
)) {
2072 log_warning("[%s:%u] Duplicate line for path \"%s\", ignoring.",
2073 fname
, line
, i
.path
);
2078 existing
= new0(ItemArray
, 1);
2079 r
= ordered_hashmap_put(h
, i
.path
, existing
);
2084 if (!GREEDY_REALLOC(existing
->items
, existing
->size
, existing
->count
+ 1))
2087 memcpy(existing
->items
+ existing
->count
++, &i
, sizeof(i
));
2089 /* Sort item array, to enforce stable ordering of application */
2090 qsort_safe(existing
->items
, existing
->count
, sizeof(Item
), item_compare
);
2096 static void help(void) {
2097 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
2098 "Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
2099 " -h --help Show this help\n"
2100 " --version Show package version\n"
2101 " --create Create marked files/directories\n"
2102 " --clean Clean up marked directories\n"
2103 " --remove Remove marked files/directories\n"
2104 " --boot Execute actions only safe at boot\n"
2105 " --prefix=PATH Only apply rules with the specified prefix\n"
2106 " --exclude-prefix=PATH Ignore rules with the specified prefix\n"
2107 " --root=PATH Operate on an alternate filesystem root\n",
2108 program_invocation_short_name
);
2111 static int parse_argv(int argc
, char *argv
[]) {
2114 ARG_VERSION
= 0x100,
2124 static const struct option options
[] = {
2125 { "help", no_argument
, NULL
, 'h' },
2126 { "version", no_argument
, NULL
, ARG_VERSION
},
2127 { "create", no_argument
, NULL
, ARG_CREATE
},
2128 { "clean", no_argument
, NULL
, ARG_CLEAN
},
2129 { "remove", no_argument
, NULL
, ARG_REMOVE
},
2130 { "boot", no_argument
, NULL
, ARG_BOOT
},
2131 { "prefix", required_argument
, NULL
, ARG_PREFIX
},
2132 { "exclude-prefix", required_argument
, NULL
, ARG_EXCLUDE_PREFIX
},
2133 { "root", required_argument
, NULL
, ARG_ROOT
},
2142 while ((c
= getopt_long(argc
, argv
, "h", options
, NULL
)) >= 0)
2170 if (strv_push(&arg_include_prefixes
, optarg
) < 0)
2174 case ARG_EXCLUDE_PREFIX
:
2175 if (strv_push(&arg_exclude_prefixes
, optarg
) < 0)
2180 r
= parse_path_argument_and_warn(optarg
, true, &arg_root
);
2189 assert_not_reached("Unhandled option");
2192 if (!arg_clean
&& !arg_create
&& !arg_remove
) {
2193 log_error("You need to specify at least one of --clean, --create or --remove.");
2200 static int read_config_file(const char *fn
, bool ignore_enoent
) {
2201 _cleanup_fclose_
FILE *f
= NULL
;
2202 char line
[LINE_MAX
];
2210 r
= search_and_fopen_nulstr(fn
, "re", arg_root
, conf_file_dirs
, &f
);
2212 if (ignore_enoent
&& r
== -ENOENT
) {
2213 log_debug_errno(r
, "Failed to open \"%s\": %m", fn
);
2217 return log_error_errno(r
, "Failed to open '%s', ignoring: %m", fn
);
2219 log_debug("Reading config file \"%s\".", fn
);
2221 FOREACH_LINE(line
, f
, break) {
2228 if (*l
== '#' || *l
== 0)
2231 k
= parse_line(fn
, v
, l
);
2232 if (k
< 0 && r
== 0)
2236 /* we have to determine age parameter for each entry of type X */
2237 ORDERED_HASHMAP_FOREACH(i
, globs
, iterator
) {
2239 Item
*j
, *candidate_item
= NULL
;
2241 if (i
->type
!= IGNORE_DIRECTORY_PATH
)
2244 ORDERED_HASHMAP_FOREACH(j
, items
, iter
) {
2245 if (!IN_SET(j
->type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
, CREATE_SUBVOLUME
, CREATE_SUBVOLUME_INHERIT_QUOTA
, CREATE_SUBVOLUME_NEW_QUOTA
))
2248 if (path_equal(j
->path
, i
->path
)) {
2253 if ((!candidate_item
&& path_startswith(i
->path
, j
->path
)) ||
2254 (candidate_item
&& path_startswith(j
->path
, candidate_item
->path
) && (fnmatch(i
->path
, j
->path
, FNM_PATHNAME
| FNM_PERIOD
) == 0)))
2258 if (candidate_item
&& candidate_item
->age_set
) {
2259 i
->age
= candidate_item
->age
;
2265 log_error_errno(errno
, "Failed to read from file %s: %m", fn
);
2273 int main(int argc
, char *argv
[]) {
2278 r
= parse_argv(argc
, argv
);
2282 log_set_target(LOG_TARGET_AUTO
);
2283 log_parse_environment();
2290 items
= ordered_hashmap_new(&string_hash_ops
);
2291 globs
= ordered_hashmap_new(&string_hash_ops
);
2293 if (!items
|| !globs
) {
2300 if (optind
< argc
) {
2303 for (j
= optind
; j
< argc
; j
++) {
2304 k
= read_config_file(argv
[j
], false);
2305 if (k
< 0 && r
== 0)
2310 _cleanup_strv_free_
char **files
= NULL
;
2313 r
= conf_files_list_nulstr(&files
, ".conf", arg_root
, conf_file_dirs
);
2315 log_error_errno(r
, "Failed to enumerate tmpfiles.d files: %m");
2319 STRV_FOREACH(f
, files
) {
2320 k
= read_config_file(*f
, true);
2321 if (k
< 0 && r
== 0)
2326 /* The non-globbing ones usually create things, hence we apply
2328 ORDERED_HASHMAP_FOREACH(a
, items
, iterator
) {
2329 k
= process_item_array(a
);
2330 if (k
< 0 && r
== 0)
2334 /* The globbing ones usually alter things, hence we apply them
2336 ORDERED_HASHMAP_FOREACH(a
, globs
, iterator
) {
2337 k
= process_item_array(a
);
2338 if (k
< 0 && r
== 0)
2343 while ((a
= ordered_hashmap_steal_first(items
)))
2346 while ((a
= ordered_hashmap_steal_first(globs
)))
2349 ordered_hashmap_free(items
);
2350 ordered_hashmap_free(globs
);
2352 free(arg_include_prefixes
);
2353 free(arg_exclude_prefixes
);
2356 set_free_free(unix_sockets
);
2358 mac_selinux_finish();
2360 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;