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 if (mode
== MODE_ADD
|| mode
== MODE_SET
)
928 if (mode
== MODE_SET
)
929 mask
|= ATTRIBUTES_ALL
;
933 item
->attribute_mask
= mask
;
934 item
->attribute_value
= value
;
935 item
->attribute_set
= true;
940 static int path_set_attribute(Item
*item
, const char *path
) {
941 _cleanup_close_
int fd
= -1;
946 if (!item
->attribute_set
|| item
->attribute_mask
== 0)
949 fd
= open(path
, O_RDONLY
|O_NONBLOCK
|O_CLOEXEC
|O_NOATIME
|O_NOFOLLOW
);
952 return log_error_errno(errno
, "Skipping file attributes adjustment on symlink %s.", path
);
954 return log_error_errno(errno
, "Cannot open '%s': %m", path
);
957 if (fstat(fd
, &st
) < 0)
958 return log_error_errno(errno
, "Cannot stat '%s': %m", path
);
960 /* Issuing the file attribute ioctls on device nodes is not
961 * safe, as that will be delivered to the drivers, not the
962 * file system containing the device node. */
963 if (!S_ISREG(st
.st_mode
) && !S_ISDIR(st
.st_mode
)) {
964 log_error("Setting file flags is only supported on regular files and directories, cannot set on '%s'.", path
);
968 f
= item
->attribute_value
& item
->attribute_mask
;
970 /* Mask away directory-specific flags */
971 if (!S_ISDIR(st
.st_mode
))
974 r
= chattr_fd(fd
, f
, item
->attribute_mask
);
976 log_full_errno(r
== -ENOTTY
? LOG_DEBUG
: LOG_WARNING
,
978 "Cannot set file attribute for '%s', value=0x%08x, mask=0x%08x: %m",
979 path
, item
->attribute_value
, item
->attribute_mask
);
984 static int write_one_file(Item
*i
, const char *path
) {
985 _cleanup_close_
int fd
= -1;
992 flags
= i
->type
== CREATE_FILE
? O_CREAT
|O_APPEND
|O_NOFOLLOW
:
993 i
->type
== TRUNCATE_FILE
? O_CREAT
|O_TRUNC
|O_NOFOLLOW
: 0;
995 RUN_WITH_UMASK(0000) {
996 mac_selinux_create_file_prepare(path
, S_IFREG
);
997 fd
= open(path
, flags
|O_NDELAY
|O_CLOEXEC
|O_WRONLY
|O_NOCTTY
, i
->mode
);
998 mac_selinux_create_file_clear();
1002 if (i
->type
== WRITE_FILE
&& errno
== ENOENT
) {
1003 log_debug_errno(errno
, "Not writing \"%s\": %m", path
);
1008 if (!i
->argument
&& errno
== EROFS
&& stat(path
, &st
) == 0 &&
1009 (i
->type
== CREATE_FILE
|| st
.st_size
== 0))
1012 return log_error_errno(r
, "Failed to create file %s: %m", path
);
1016 _cleanup_free_
char *unescaped
= NULL
, *replaced
= NULL
;
1018 log_debug("%s to \"%s\".", i
->type
== CREATE_FILE
? "Appending" : "Writing", path
);
1020 r
= cunescape(i
->argument
, 0, &unescaped
);
1022 return log_error_errno(r
, "Failed to unescape parameter to write: %s", i
->argument
);
1024 r
= specifier_printf(unescaped
, specifier_table
, NULL
, &replaced
);
1026 return log_error_errno(r
, "Failed to replace specifiers in parameter to write '%s': %m", unescaped
);
1028 r
= loop_write(fd
, replaced
, strlen(replaced
), false);
1030 return log_error_errno(r
, "Failed to write file \"%s\": %m", path
);
1032 log_debug("\"%s\" has been created.", path
);
1034 fd
= safe_close(fd
);
1036 if (stat(path
, &st
) < 0)
1037 return log_error_errno(errno
, "stat(%s) failed: %m", path
);
1040 if (!S_ISREG(st
.st_mode
)) {
1041 log_error("%s is not a file.", path
);
1045 r
= path_set_perms(i
, path
);
1052 typedef int (*action_t
)(Item
*, const char *);
1054 static int item_do_children(Item
*i
, const char *path
, action_t action
) {
1055 _cleanup_closedir_
DIR *d
;
1061 /* This returns the first error we run into, but nevertheless
1064 d
= opendir_nomod(path
);
1066 return errno
== ENOENT
|| errno
== ENOTDIR
? 0 : -errno
;
1069 _cleanup_free_
char *p
= NULL
;
1076 if (errno
> 0 && r
== 0)
1082 if (STR_IN_SET(de
->d_name
, ".", ".."))
1085 p
= strjoin(path
, "/", de
->d_name
, NULL
);
1090 if (q
< 0 && q
!= -ENOENT
&& r
== 0)
1093 if (IN_SET(de
->d_type
, DT_UNKNOWN
, DT_DIR
)) {
1094 q
= item_do_children(i
, p
, action
);
1095 if (q
< 0 && r
== 0)
1103 static int glob_item(Item
*i
, action_t action
, bool recursive
) {
1104 _cleanup_globfree_ glob_t g
= {
1105 .gl_closedir
= (void (*)(void *)) closedir
,
1106 .gl_readdir
= (struct dirent
*(*)(void *)) readdir
,
1107 .gl_opendir
= (void *(*)(const char *)) opendir_nomod
,
1115 k
= glob(i
->path
, GLOB_NOSORT
|GLOB_BRACE
|GLOB_ALTDIRFUNC
, NULL
, &g
);
1116 if (k
!= 0 && k
!= GLOB_NOMATCH
)
1117 return log_error_errno(errno
?: EIO
, "glob(%s) failed: %m", i
->path
);
1119 STRV_FOREACH(fn
, g
.gl_pathv
) {
1121 if (k
< 0 && r
== 0)
1125 k
= item_do_children(i
, *fn
, action
);
1126 if (k
< 0 && r
== 0)
1139 _CREATION_MODE_INVALID
= -1
1142 static const char *creation_mode_verb_table
[_CREATION_MODE_MAX
] = {
1143 [CREATION_NORMAL
] = "Created",
1144 [CREATION_EXISTING
] = "Found existing",
1145 [CREATION_FORCE
] = "Created replacement",
1148 DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb
, CreationMode
);
1150 static int create_item(Item
*i
) {
1151 _cleanup_free_
char *resolved
= NULL
;
1155 CreationMode creation
;
1159 log_debug("Running create action for entry %c %s", (char) i
->type
, i
->path
);
1164 case IGNORE_DIRECTORY_PATH
:
1166 case RECURSIVE_REMOVE_PATH
:
1171 r
= write_one_file(i
, i
->path
);
1177 r
= specifier_printf(i
->argument
, specifier_table
, NULL
, &resolved
);
1179 return log_error_errno(r
, "Failed to substitute specifiers in copy source %s: %m", i
->argument
);
1181 log_debug("Copying tree \"%s\" to \"%s\".", resolved
, i
->path
);
1182 r
= copy_tree(resolved
, i
->path
, false);
1184 if (r
== -EROFS
&& stat(i
->path
, &st
) == 0)
1191 return log_error_errno(r
, "Failed to copy files to %s: %m", i
->path
);
1193 if (stat(resolved
, &a
) < 0)
1194 return log_error_errno(errno
, "stat(%s) failed: %m", resolved
);
1196 if (stat(i
->path
, &b
) < 0)
1197 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1199 if ((a
.st_mode
^ b
.st_mode
) & S_IFMT
) {
1200 log_debug("Can't copy to %s, file exists already and is of different type", i
->path
);
1205 r
= path_set_perms(i
, i
->path
);
1212 r
= glob_item(i
, write_one_file
, false);
1218 case CREATE_DIRECTORY
:
1219 case TRUNCATE_DIRECTORY
:
1220 case CREATE_SUBVOLUME
:
1221 case CREATE_SUBVOLUME_INHERIT_QUOTA
:
1222 case CREATE_SUBVOLUME_NEW_QUOTA
:
1224 RUN_WITH_UMASK(0000)
1225 mkdir_parents_label(i
->path
, 0755);
1227 if (IN_SET(i
->type
, CREATE_SUBVOLUME
, CREATE_SUBVOLUME_INHERIT_QUOTA
, CREATE_SUBVOLUME_NEW_QUOTA
)) {
1229 if (btrfs_is_subvol(isempty(arg_root
) ? "/" : arg_root
) <= 0)
1231 /* Don't create a subvolume unless the
1232 * root directory is one, too. We do
1233 * this under the assumption that if
1234 * the root directory is just a plain
1235 * directory (i.e. very light-weight),
1236 * we shouldn't try to split it up
1237 * into subvolumes (i.e. more
1238 * heavy-weight). Thus, chroot()
1239 * environments and suchlike will get
1240 * a full brtfs subvolume set up below
1241 * their tree only if they
1242 * specifically set up a btrfs
1243 * subvolume for the root dir too. */
1247 RUN_WITH_UMASK((~i
->mode
) & 0777)
1248 r
= btrfs_subvol_make(i
->path
);
1253 if (IN_SET(i
->type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
) || r
== -ENOTTY
)
1254 RUN_WITH_UMASK(0000)
1255 r
= mkdir_label(i
->path
, i
->mode
);
1260 if (r
!= -EEXIST
&& r
!= -EROFS
)
1261 return log_error_errno(r
, "Failed to create directory or subvolume \"%s\": %m", i
->path
);
1263 k
= is_dir(i
->path
, false);
1264 if (k
== -ENOENT
&& r
== -EROFS
)
1265 return log_error_errno(r
, "%s does not exist and cannot be created as the file system is read-only.", i
->path
);
1267 return log_error_errno(k
, "Failed to check if %s exists: %m", i
->path
);
1269 log_warning("\"%s\" already exists and is not a directory.", i
->path
);
1273 creation
= CREATION_EXISTING
;
1275 creation
= CREATION_NORMAL
;
1277 log_debug("%s directory \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1279 if (IN_SET(i
->type
, CREATE_SUBVOLUME_NEW_QUOTA
, CREATE_SUBVOLUME_INHERIT_QUOTA
)) {
1280 r
= btrfs_subvol_auto_qgroup(i
->path
, 0, i
->type
== CREATE_SUBVOLUME_NEW_QUOTA
);
1282 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
);
1283 else if (r
== -EROFS
)
1284 log_debug_errno(r
, "Couldn't adjust quota for subvolume \"%s\" because of read-only file system: %m", i
->path
);
1285 else if (r
== -ENOPROTOOPT
)
1286 log_debug_errno(r
, "Couldn't adjust quota for subvolume \"%s\" because quota support is disabled: %m", i
->path
);
1288 q
= log_error_errno(r
, "Failed to adjust quota for subvolume \"%s\": %m", i
->path
);
1290 log_debug("Adjusted quota for subvolume \"%s\".", i
->path
);
1292 log_debug("Quota for subvolume \"%s\" already in place, no change made.", i
->path
);
1295 r
= path_set_perms(i
, i
->path
);
1305 RUN_WITH_UMASK(0000) {
1306 mac_selinux_create_file_prepare(i
->path
, S_IFIFO
);
1307 r
= mkfifo(i
->path
, i
->mode
);
1308 mac_selinux_create_file_clear();
1312 if (errno
!= EEXIST
)
1313 return log_error_errno(errno
, "Failed to create fifo %s: %m", i
->path
);
1315 if (lstat(i
->path
, &st
) < 0)
1316 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1318 if (!S_ISFIFO(st
.st_mode
)) {
1321 RUN_WITH_UMASK(0000) {
1322 mac_selinux_create_file_prepare(i
->path
, S_IFIFO
);
1323 r
= mkfifo_atomic(i
->path
, i
->mode
);
1324 mac_selinux_create_file_clear();
1328 return log_error_errno(r
, "Failed to create fifo %s: %m", i
->path
);
1329 creation
= CREATION_FORCE
;
1331 log_warning("\"%s\" already exists and is not a fifo.", i
->path
);
1335 creation
= CREATION_EXISTING
;
1337 creation
= CREATION_NORMAL
;
1338 log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1340 r
= path_set_perms(i
, i
->path
);
1347 case CREATE_SYMLINK
: {
1348 r
= specifier_printf(i
->argument
, specifier_table
, NULL
, &resolved
);
1350 return log_error_errno(r
, "Failed to substitute specifiers in symlink target %s: %m", i
->argument
);
1352 mac_selinux_create_file_prepare(i
->path
, S_IFLNK
);
1353 r
= symlink(resolved
, i
->path
);
1354 mac_selinux_create_file_clear();
1357 _cleanup_free_
char *x
= NULL
;
1359 if (errno
!= EEXIST
)
1360 return log_error_errno(errno
, "symlink(%s, %s) failed: %m", resolved
, i
->path
);
1362 r
= readlink_malloc(i
->path
, &x
);
1363 if (r
< 0 || !streq(resolved
, x
)) {
1366 mac_selinux_create_file_prepare(i
->path
, S_IFLNK
);
1367 r
= symlink_atomic(resolved
, i
->path
);
1368 mac_selinux_create_file_clear();
1371 return log_error_errno(r
, "symlink(%s, %s) failed: %m", resolved
, i
->path
);
1373 creation
= CREATION_FORCE
;
1375 log_debug("\"%s\" is not a symlink or does not point to the correct path.", i
->path
);
1379 creation
= CREATION_EXISTING
;
1382 creation
= CREATION_NORMAL
;
1383 log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1387 case CREATE_BLOCK_DEVICE
:
1388 case CREATE_CHAR_DEVICE
: {
1391 if (have_effective_cap(CAP_MKNOD
) == 0) {
1392 /* In a container we lack CAP_MKNOD. We
1393 shouldn't attempt to create the device node in
1394 that case to avoid noise, and we don't support
1395 virtualized devices in containers anyway. */
1397 log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i
->path
);
1401 file_type
= i
->type
== CREATE_BLOCK_DEVICE
? S_IFBLK
: S_IFCHR
;
1403 RUN_WITH_UMASK(0000) {
1404 mac_selinux_create_file_prepare(i
->path
, file_type
);
1405 r
= mknod(i
->path
, i
->mode
| file_type
, i
->major_minor
);
1406 mac_selinux_create_file_clear();
1410 if (errno
== EPERM
) {
1411 log_debug("We lack permissions, possibly because of cgroup configuration; "
1412 "skipping creation of device node %s.", i
->path
);
1416 if (errno
!= EEXIST
)
1417 return log_error_errno(errno
, "Failed to create device node %s: %m", i
->path
);
1419 if (lstat(i
->path
, &st
) < 0)
1420 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1422 if ((st
.st_mode
& S_IFMT
) != file_type
) {
1426 RUN_WITH_UMASK(0000) {
1427 mac_selinux_create_file_prepare(i
->path
, file_type
);
1428 r
= mknod_atomic(i
->path
, i
->mode
| file_type
, i
->major_minor
);
1429 mac_selinux_create_file_clear();
1433 return log_error_errno(r
, "Failed to create device node \"%s\": %m", i
->path
);
1434 creation
= CREATION_FORCE
;
1436 log_debug("%s is not a device node.", i
->path
);
1440 creation
= CREATION_EXISTING
;
1442 creation
= CREATION_NORMAL
;
1444 log_debug("%s %s device node \"%s\" %u:%u.",
1445 creation_mode_verb_to_string(creation
),
1446 i
->type
== CREATE_BLOCK_DEVICE
? "block" : "char",
1447 i
->path
, major(i
->mode
), minor(i
->mode
));
1449 r
= path_set_perms(i
, i
->path
);
1458 r
= glob_item(i
, path_set_perms
, false);
1463 case RECURSIVE_RELABEL_PATH
:
1464 r
= glob_item(i
, path_set_perms
, true);
1470 r
= glob_item(i
, path_set_xattrs
, false);
1475 case RECURSIVE_SET_XATTR
:
1476 r
= glob_item(i
, path_set_xattrs
, true);
1482 r
= glob_item(i
, path_set_acls
, false);
1487 case RECURSIVE_SET_ACL
:
1488 r
= glob_item(i
, path_set_acls
, true);
1494 r
= glob_item(i
, path_set_attribute
, false);
1499 case RECURSIVE_SET_ATTRIBUTE
:
1500 r
= glob_item(i
, path_set_attribute
, true);
1509 static int remove_item_instance(Item
*i
, const char *instance
) {
1517 if (remove(instance
) < 0 && errno
!= ENOENT
)
1518 return log_error_errno(errno
, "rm(%s): %m", instance
);
1522 case TRUNCATE_DIRECTORY
:
1523 case RECURSIVE_REMOVE_PATH
:
1524 /* FIXME: we probably should use dir_cleanup() here
1525 * instead of rm_rf() so that 'x' is honoured. */
1526 log_debug("rm -rf \"%s\"", instance
);
1527 r
= rm_rf(instance
, (i
->type
== RECURSIVE_REMOVE_PATH
? REMOVE_ROOT
|REMOVE_SUBVOLUME
: 0) | REMOVE_PHYSICAL
);
1528 if (r
< 0 && r
!= -ENOENT
)
1529 return log_error_errno(r
, "rm_rf(%s): %m", instance
);
1534 assert_not_reached("wut?");
1540 static int remove_item(Item
*i
) {
1545 log_debug("Running remove action for entry %c %s", (char) i
->type
, i
->path
);
1551 case CREATE_DIRECTORY
:
1552 case CREATE_SUBVOLUME
:
1553 case CREATE_SUBVOLUME_INHERIT_QUOTA
:
1554 case CREATE_SUBVOLUME_NEW_QUOTA
:
1556 case CREATE_SYMLINK
:
1557 case CREATE_CHAR_DEVICE
:
1558 case CREATE_BLOCK_DEVICE
:
1560 case IGNORE_DIRECTORY_PATH
:
1563 case RECURSIVE_RELABEL_PATH
:
1567 case RECURSIVE_SET_XATTR
:
1569 case RECURSIVE_SET_ACL
:
1571 case RECURSIVE_SET_ATTRIBUTE
:
1575 case TRUNCATE_DIRECTORY
:
1576 case RECURSIVE_REMOVE_PATH
:
1577 r
= glob_item(i
, remove_item_instance
, false);
1584 static int clean_item_instance(Item
*i
, const char* instance
) {
1585 _cleanup_closedir_
DIR *d
= NULL
;
1589 char timestamp
[FORMAT_TIMESTAMP_MAX
];
1596 n
= now(CLOCK_REALTIME
);
1600 cutoff
= n
- i
->age
;
1602 d
= opendir_nomod(instance
);
1604 if (errno
== ENOENT
|| errno
== ENOTDIR
) {
1605 log_debug_errno(errno
, "Directory \"%s\": %m", instance
);
1609 log_error_errno(errno
, "Failed to open directory %s: %m", instance
);
1613 if (fstat(dirfd(d
), &s
) < 0)
1614 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1616 if (!S_ISDIR(s
.st_mode
)) {
1617 log_error("%s is not a directory.", i
->path
);
1621 if (fstatat(dirfd(d
), "..", &ps
, AT_SYMLINK_NOFOLLOW
) != 0)
1622 return log_error_errno(errno
, "stat(%s/..) failed: %m", i
->path
);
1624 mountpoint
= s
.st_dev
!= ps
.st_dev
|| s
.st_ino
== ps
.st_ino
;
1626 log_debug("Cleanup threshold for %s \"%s\" is %s",
1627 mountpoint
? "mount point" : "directory",
1629 format_timestamp_us(timestamp
, sizeof(timestamp
), cutoff
));
1631 return dir_cleanup(i
, instance
, d
, &s
, cutoff
, s
.st_dev
, mountpoint
,
1632 MAX_DEPTH
, i
->keep_first_level
);
1635 static int clean_item(Item
*i
) {
1640 log_debug("Running clean action for entry %c %s", (char) i
->type
, i
->path
);
1643 case CREATE_DIRECTORY
:
1644 case CREATE_SUBVOLUME
:
1645 case CREATE_SUBVOLUME_INHERIT_QUOTA
:
1646 case CREATE_SUBVOLUME_NEW_QUOTA
:
1647 case TRUNCATE_DIRECTORY
:
1650 clean_item_instance(i
, i
->path
);
1652 case IGNORE_DIRECTORY_PATH
:
1653 r
= glob_item(i
, clean_item_instance
, false);
1662 static int process_item_array(ItemArray
*array
);
1664 static int process_item(Item
*i
) {
1666 _cleanup_free_
char *prefix
= NULL
;
1675 prefix
= malloc(strlen(i
->path
) + 1);
1679 PATH_FOREACH_PREFIX(prefix
, i
->path
) {
1682 j
= ordered_hashmap_get(items
, prefix
);
1686 s
= process_item_array(j
);
1687 if (s
< 0 && t
== 0)
1692 r
= arg_create
? create_item(i
) : 0;
1693 q
= arg_remove
? remove_item(i
) : 0;
1694 p
= arg_clean
? clean_item(i
) : 0;
1702 static int process_item_array(ItemArray
*array
) {
1708 for (n
= 0; n
< array
->count
; n
++) {
1709 k
= process_item(array
->items
+ n
);
1710 if (k
< 0 && r
== 0)
1717 static void item_free_contents(Item
*i
) {
1721 strv_free(i
->xattrs
);
1724 acl_free(i
->acl_access
);
1725 acl_free(i
->acl_default
);
1729 static void item_array_free(ItemArray
*a
) {
1735 for (n
= 0; n
< a
->count
; n
++)
1736 item_free_contents(a
->items
+ n
);
1741 static int item_compare(const void *a
, const void *b
) {
1742 const Item
*x
= a
, *y
= b
;
1744 /* Make sure that the ownership taking item is put first, so
1745 * that we first create the node, and then can adjust it */
1747 if (takes_ownership(x
->type
) && !takes_ownership(y
->type
))
1749 if (!takes_ownership(x
->type
) && takes_ownership(y
->type
))
1752 return (int) x
->type
- (int) y
->type
;
1755 static bool item_compatible(Item
*a
, Item
*b
) {
1758 assert(streq(a
->path
, b
->path
));
1760 if (takes_ownership(a
->type
) && takes_ownership(b
->type
))
1761 /* check if the items are the same */
1762 return streq_ptr(a
->argument
, b
->argument
) &&
1764 a
->uid_set
== b
->uid_set
&&
1767 a
->gid_set
== b
->gid_set
&&
1770 a
->mode_set
== b
->mode_set
&&
1771 a
->mode
== b
->mode
&&
1773 a
->age_set
== b
->age_set
&&
1776 a
->mask_perms
== b
->mask_perms
&&
1778 a
->keep_first_level
== b
->keep_first_level
&&
1780 a
->major_minor
== b
->major_minor
;
1785 static bool should_include_path(const char *path
) {
1788 STRV_FOREACH(prefix
, arg_exclude_prefixes
)
1789 if (path_startswith(path
, *prefix
)) {
1790 log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.",
1795 STRV_FOREACH(prefix
, arg_include_prefixes
)
1796 if (path_startswith(path
, *prefix
)) {
1797 log_debug("Entry \"%s\" matches include prefix \"%s\".", path
, *prefix
);
1801 /* no matches, so we should include this path only if we
1802 * have no whitelist at all */
1803 if (strv_length(arg_include_prefixes
) == 0)
1806 log_debug("Entry \"%s\" does not match any include prefix, skipping.", path
);
1810 static int parse_line(const char *fname
, unsigned line
, const char *buffer
) {
1812 _cleanup_free_
char *action
= NULL
, *mode
= NULL
, *user
= NULL
, *group
= NULL
, *age
= NULL
, *path
= NULL
;
1813 _cleanup_(item_free_contents
) Item i
= {};
1814 ItemArray
*existing
;
1817 bool force
= false, boot
= false;
1823 r
= extract_many_words(
1835 return log_error_errno(r
, "[%s:%u] Failed to parse line: %m", fname
, line
);
1837 log_error("[%s:%u] Syntax error.", fname
, line
);
1841 if (!isempty(buffer
) && !streq(buffer
, "-")) {
1842 i
.argument
= strdup(buffer
);
1847 if (isempty(action
)) {
1848 log_error("[%s:%u] Command too short '%s'.", fname
, line
, action
);
1852 for (pos
= 1; action
[pos
]; pos
++) {
1853 if (action
[pos
] == '!' && !boot
)
1855 else if (action
[pos
] == '+' && !force
)
1858 log_error("[%s:%u] Unknown modifiers in command '%s'",
1859 fname
, line
, action
);
1864 if (boot
&& !arg_boot
) {
1865 log_debug("Ignoring entry %s \"%s\" because --boot is not specified.",
1873 r
= specifier_printf(path
, specifier_table
, NULL
, &i
.path
);
1875 log_error("[%s:%u] Failed to replace specifiers: %s", fname
, line
, path
);
1881 case CREATE_DIRECTORY
:
1882 case CREATE_SUBVOLUME
:
1883 case CREATE_SUBVOLUME_INHERIT_QUOTA
:
1884 case CREATE_SUBVOLUME_NEW_QUOTA
:
1885 case TRUNCATE_DIRECTORY
:
1888 case IGNORE_DIRECTORY_PATH
:
1890 case RECURSIVE_REMOVE_PATH
:
1893 case RECURSIVE_RELABEL_PATH
:
1895 log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname
, line
, i
.type
);
1903 case CREATE_SYMLINK
:
1905 i
.argument
= strappend("/usr/share/factory/", i
.path
);
1913 log_error("[%s:%u] Write file requires argument.", fname
, line
);
1920 i
.argument
= strappend("/usr/share/factory/", i
.path
);
1923 } else if (!path_is_absolute(i
.argument
)) {
1924 log_error("[%s:%u] Source path is not absolute.", fname
, line
);
1928 path_kill_slashes(i
.argument
);
1931 case CREATE_CHAR_DEVICE
:
1932 case CREATE_BLOCK_DEVICE
: {
1933 unsigned major
, minor
;
1936 log_error("[%s:%u] Device file requires argument.", fname
, line
);
1940 if (sscanf(i
.argument
, "%u:%u", &major
, &minor
) != 2) {
1941 log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname
, line
, i
.argument
);
1945 i
.major_minor
= makedev(major
, minor
);
1950 case RECURSIVE_SET_XATTR
:
1952 log_error("[%s:%u] Set extended attribute requires argument.", fname
, line
);
1955 r
= parse_xattrs_from_arg(&i
);
1961 case RECURSIVE_SET_ACL
:
1963 log_error("[%s:%u] Set ACLs requires argument.", fname
, line
);
1966 r
= parse_acls_from_arg(&i
);
1972 case RECURSIVE_SET_ATTRIBUTE
:
1974 log_error("[%s:%u] Set file attribute requires argument.", fname
, line
);
1977 r
= parse_attribute_from_arg(&i
);
1983 log_error("[%s:%u] Unknown command type '%c'.", fname
, line
, (char) i
.type
);
1987 if (!path_is_absolute(i
.path
)) {
1988 log_error("[%s:%u] Path '%s' not absolute.", fname
, line
, i
.path
);
1992 path_kill_slashes(i
.path
);
1994 if (!should_include_path(i
.path
))
2000 p
= prefix_root(arg_root
, i
.path
);
2008 if (!isempty(user
) && !streq(user
, "-")) {
2009 const char *u
= user
;
2011 r
= get_user_creds(&u
, &i
.uid
, NULL
, NULL
, NULL
);
2013 log_error("[%s:%u] Unknown user '%s'.", fname
, line
, user
);
2020 if (!isempty(group
) && !streq(group
, "-")) {
2021 const char *g
= group
;
2023 r
= get_group_creds(&g
, &i
.gid
);
2025 log_error("[%s:%u] Unknown group '%s'.", fname
, line
, group
);
2032 if (!isempty(mode
) && !streq(mode
, "-")) {
2033 const char *mm
= mode
;
2037 i
.mask_perms
= true;
2041 if (parse_mode(mm
, &m
) < 0) {
2042 log_error("[%s:%u] Invalid mode '%s'.", fname
, line
, mode
);
2049 i
.mode
= IN_SET(i
.type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
, CREATE_SUBVOLUME
, CREATE_SUBVOLUME_INHERIT_QUOTA
, CREATE_SUBVOLUME_NEW_QUOTA
) ? 0755 : 0644;
2051 if (!isempty(age
) && !streq(age
, "-")) {
2052 const char *a
= age
;
2055 i
.keep_first_level
= true;
2059 if (parse_sec(a
, &i
.age
) < 0) {
2060 log_error("[%s:%u] Invalid age '%s'.", fname
, line
, age
);
2067 h
= needs_glob(i
.type
) ? globs
: items
;
2069 existing
= ordered_hashmap_get(h
, i
.path
);
2073 for (n
= 0; n
< existing
->count
; n
++) {
2074 if (!item_compatible(existing
->items
+ n
, &i
)) {
2075 log_warning("[%s:%u] Duplicate line for path \"%s\", ignoring.",
2076 fname
, line
, i
.path
);
2081 existing
= new0(ItemArray
, 1);
2082 r
= ordered_hashmap_put(h
, i
.path
, existing
);
2087 if (!GREEDY_REALLOC(existing
->items
, existing
->size
, existing
->count
+ 1))
2090 memcpy(existing
->items
+ existing
->count
++, &i
, sizeof(i
));
2092 /* Sort item array, to enforce stable ordering of application */
2093 qsort_safe(existing
->items
, existing
->count
, sizeof(Item
), item_compare
);
2099 static void help(void) {
2100 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
2101 "Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
2102 " -h --help Show this help\n"
2103 " --version Show package version\n"
2104 " --create Create marked files/directories\n"
2105 " --clean Clean up marked directories\n"
2106 " --remove Remove marked files/directories\n"
2107 " --boot Execute actions only safe at boot\n"
2108 " --prefix=PATH Only apply rules with the specified prefix\n"
2109 " --exclude-prefix=PATH Ignore rules with the specified prefix\n"
2110 " --root=PATH Operate on an alternate filesystem root\n",
2111 program_invocation_short_name
);
2114 static int parse_argv(int argc
, char *argv
[]) {
2117 ARG_VERSION
= 0x100,
2127 static const struct option options
[] = {
2128 { "help", no_argument
, NULL
, 'h' },
2129 { "version", no_argument
, NULL
, ARG_VERSION
},
2130 { "create", no_argument
, NULL
, ARG_CREATE
},
2131 { "clean", no_argument
, NULL
, ARG_CLEAN
},
2132 { "remove", no_argument
, NULL
, ARG_REMOVE
},
2133 { "boot", no_argument
, NULL
, ARG_BOOT
},
2134 { "prefix", required_argument
, NULL
, ARG_PREFIX
},
2135 { "exclude-prefix", required_argument
, NULL
, ARG_EXCLUDE_PREFIX
},
2136 { "root", required_argument
, NULL
, ARG_ROOT
},
2145 while ((c
= getopt_long(argc
, argv
, "h", options
, NULL
)) >= 0)
2173 if (strv_push(&arg_include_prefixes
, optarg
) < 0)
2177 case ARG_EXCLUDE_PREFIX
:
2178 if (strv_push(&arg_exclude_prefixes
, optarg
) < 0)
2183 r
= parse_path_argument_and_warn(optarg
, true, &arg_root
);
2192 assert_not_reached("Unhandled option");
2195 if (!arg_clean
&& !arg_create
&& !arg_remove
) {
2196 log_error("You need to specify at least one of --clean, --create or --remove.");
2203 static int read_config_file(const char *fn
, bool ignore_enoent
) {
2204 _cleanup_fclose_
FILE *f
= NULL
;
2205 char line
[LINE_MAX
];
2213 r
= search_and_fopen_nulstr(fn
, "re", arg_root
, conf_file_dirs
, &f
);
2215 if (ignore_enoent
&& r
== -ENOENT
) {
2216 log_debug_errno(r
, "Failed to open \"%s\": %m", fn
);
2220 return log_error_errno(r
, "Failed to open '%s', ignoring: %m", fn
);
2222 log_debug("Reading config file \"%s\".", fn
);
2224 FOREACH_LINE(line
, f
, break) {
2231 if (*l
== '#' || *l
== 0)
2234 k
= parse_line(fn
, v
, l
);
2235 if (k
< 0 && r
== 0)
2239 /* we have to determine age parameter for each entry of type X */
2240 ORDERED_HASHMAP_FOREACH(i
, globs
, iterator
) {
2242 Item
*j
, *candidate_item
= NULL
;
2244 if (i
->type
!= IGNORE_DIRECTORY_PATH
)
2247 ORDERED_HASHMAP_FOREACH(j
, items
, iter
) {
2248 if (!IN_SET(j
->type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
, CREATE_SUBVOLUME
, CREATE_SUBVOLUME_INHERIT_QUOTA
, CREATE_SUBVOLUME_NEW_QUOTA
))
2251 if (path_equal(j
->path
, i
->path
)) {
2256 if ((!candidate_item
&& path_startswith(i
->path
, j
->path
)) ||
2257 (candidate_item
&& path_startswith(j
->path
, candidate_item
->path
) && (fnmatch(i
->path
, j
->path
, FNM_PATHNAME
| FNM_PERIOD
) == 0)))
2261 if (candidate_item
&& candidate_item
->age_set
) {
2262 i
->age
= candidate_item
->age
;
2268 log_error_errno(errno
, "Failed to read from file %s: %m", fn
);
2276 int main(int argc
, char *argv
[]) {
2281 r
= parse_argv(argc
, argv
);
2285 log_set_target(LOG_TARGET_AUTO
);
2286 log_parse_environment();
2293 items
= ordered_hashmap_new(&string_hash_ops
);
2294 globs
= ordered_hashmap_new(&string_hash_ops
);
2296 if (!items
|| !globs
) {
2303 if (optind
< argc
) {
2306 for (j
= optind
; j
< argc
; j
++) {
2307 k
= read_config_file(argv
[j
], false);
2308 if (k
< 0 && r
== 0)
2313 _cleanup_strv_free_
char **files
= NULL
;
2316 r
= conf_files_list_nulstr(&files
, ".conf", arg_root
, conf_file_dirs
);
2318 log_error_errno(r
, "Failed to enumerate tmpfiles.d files: %m");
2322 STRV_FOREACH(f
, files
) {
2323 k
= read_config_file(*f
, true);
2324 if (k
< 0 && r
== 0)
2329 /* The non-globbing ones usually create things, hence we apply
2331 ORDERED_HASHMAP_FOREACH(a
, items
, iterator
) {
2332 k
= process_item_array(a
);
2333 if (k
< 0 && r
== 0)
2337 /* The globbing ones usually alter things, hence we apply them
2339 ORDERED_HASHMAP_FOREACH(a
, globs
, iterator
) {
2340 k
= process_item_array(a
);
2341 if (k
< 0 && r
== 0)
2346 while ((a
= ordered_hashmap_steal_first(items
)))
2349 while ((a
= ordered_hashmap_steal_first(globs
)))
2352 ordered_hashmap_free(items
);
2353 ordered_hashmap_free(globs
);
2355 free(arg_include_prefixes
);
2356 free(arg_exclude_prefixes
);
2359 set_free_free(unix_sockets
);
2361 mac_selinux_finish();
2363 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;