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/>.
34 #include <sys/xattr.h>
39 #include "alloc-util.h"
40 #include "btrfs-util.h"
41 #include "capability-util.h"
42 #include "chattr-util.h"
43 #include "conf-files.h"
46 #include "dirent-util.h"
50 #include "format-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 */
97 EMPTY_DIRECTORY
= 'e',
99 RECURSIVE_SET_XATTR
= 'T',
101 RECURSIVE_SET_ACL
= 'A',
103 RECURSIVE_SET_ATTRIBUTE
= 'H',
105 IGNORE_DIRECTORY_PATH
= 'X',
107 RECURSIVE_REMOVE_PATH
= 'R',
109 RECURSIVE_RELABEL_PATH
= 'Z',
110 ADJUST_MODE
= 'm', /* legacy, 'z' is identical to this */
113 typedef struct Item
{
129 unsigned attribute_value
;
130 unsigned attribute_mask
;
137 bool attribute_set
:1;
139 bool keep_first_level
:1;
146 typedef struct ItemArray
{
152 static bool arg_create
= false;
153 static bool arg_clean
= false;
154 static bool arg_remove
= false;
155 static bool arg_boot
= false;
157 static char **arg_include_prefixes
= NULL
;
158 static char **arg_exclude_prefixes
= NULL
;
159 static char *arg_root
= NULL
;
161 static const char conf_file_dirs
[] = CONF_PATHS_NULSTR("tmpfiles.d");
163 #define MAX_DEPTH 256
165 static OrderedHashmap
*items
= NULL
, *globs
= NULL
;
166 static Set
*unix_sockets
= NULL
;
168 static const Specifier specifier_table
[] = {
169 { 'm', specifier_machine_id
, NULL
},
170 { 'b', specifier_boot_id
, NULL
},
171 { 'H', specifier_host_name
, NULL
},
172 { 'v', specifier_kernel_release
, NULL
},
176 static bool needs_glob(ItemType t
) {
180 IGNORE_DIRECTORY_PATH
,
182 RECURSIVE_REMOVE_PATH
,
186 RECURSIVE_RELABEL_PATH
,
192 RECURSIVE_SET_ATTRIBUTE
);
195 static bool takes_ownership(ItemType t
) {
203 CREATE_SUBVOLUME_INHERIT_QUOTA
,
204 CREATE_SUBVOLUME_NEW_QUOTA
,
212 IGNORE_DIRECTORY_PATH
,
214 RECURSIVE_REMOVE_PATH
);
217 static struct Item
* find_glob(OrderedHashmap
*h
, const char *match
) {
221 ORDERED_HASHMAP_FOREACH(j
, h
, i
) {
224 for (n
= 0; n
< j
->count
; n
++) {
225 Item
*item
= j
->items
+ n
;
227 if (fnmatch(item
->path
, match
, FNM_PATHNAME
|FNM_PERIOD
) == 0)
235 static void load_unix_sockets(void) {
236 _cleanup_fclose_
FILE *f
= NULL
;
242 /* We maintain a cache of the sockets we found in
243 * /proc/net/unix to speed things up a little. */
245 unix_sockets
= set_new(&string_hash_ops
);
249 f
= fopen("/proc/net/unix", "re");
254 if (!fgets(line
, sizeof(line
), f
))
261 if (!fgets(line
, sizeof(line
), f
))
266 p
= strchr(line
, ':');
274 p
+= strspn(p
, WHITESPACE
);
275 p
+= strcspn(p
, WHITESPACE
); /* skip one more word */
276 p
+= strspn(p
, WHITESPACE
);
285 path_kill_slashes(s
);
287 k
= set_consume(unix_sockets
, s
);
288 if (k
< 0 && k
!= -EEXIST
)
295 set_free_free(unix_sockets
);
299 static bool unix_socket_alive(const char *fn
) {
305 return !!set_get(unix_sockets
, (char*) fn
);
307 /* We don't know, so assume yes */
311 static int dir_is_mount_point(DIR *d
, const char *subdir
) {
313 union file_handle_union h
= FILE_HANDLE_INIT
;
314 int mount_id_parent
, mount_id
;
317 r_p
= name_to_handle_at(dirfd(d
), ".", &h
.handle
, &mount_id_parent
, 0);
321 h
.handle
.handle_bytes
= MAX_HANDLE_SZ
;
322 r
= name_to_handle_at(dirfd(d
), subdir
, &h
.handle
, &mount_id
, 0);
326 /* got no handle; make no assumptions, return error */
327 if (r_p
< 0 && r
< 0)
330 /* got both handles; if they differ, it is a mount point */
331 if (r_p
>= 0 && r
>= 0)
332 return mount_id_parent
!= mount_id
;
334 /* got only one handle; assume different mount points if one
335 * of both queries was not supported by the filesystem */
336 if (r_p
== -ENOSYS
|| r_p
== -EOPNOTSUPP
|| r
== -ENOSYS
|| r
== -EOPNOTSUPP
)
345 static DIR* xopendirat_nomod(int dirfd
, const char *path
) {
348 dir
= xopendirat(dirfd
, path
, O_NOFOLLOW
|O_NOATIME
);
352 log_debug_errno(errno
, "Cannot open %sdirectory \"%s\": %m", dirfd
== AT_FDCWD
? "" : "sub", path
);
356 dir
= xopendirat(dirfd
, path
, O_NOFOLLOW
);
358 log_debug_errno(errno
, "Cannot open %sdirectory \"%s\": %m", dirfd
== AT_FDCWD
? "" : "sub", path
);
363 static DIR* opendir_nomod(const char *path
) {
364 return xopendirat_nomod(AT_FDCWD
, path
);
367 static int dir_cleanup(
371 const struct stat
*ds
,
376 bool keep_this_level
) {
379 struct timespec times
[2];
380 bool deleted
= false;
383 FOREACH_DIRENT_ALL(dent
, d
, break) {
386 _cleanup_free_
char *sub_path
= NULL
;
388 if (dot_or_dot_dot(dent
->d_name
))
391 if (fstatat(dirfd(d
), dent
->d_name
, &s
, AT_SYMLINK_NOFOLLOW
) < 0) {
395 /* FUSE, NFS mounts, SELinux might return EACCES */
397 log_debug_errno(errno
, "stat(%s/%s) failed: %m", p
, dent
->d_name
);
399 log_error_errno(errno
, "stat(%s/%s) failed: %m", p
, dent
->d_name
);
404 /* Stay on the same filesystem */
405 if (s
.st_dev
!= rootdev
) {
406 log_debug("Ignoring \"%s/%s\": different filesystem.", p
, dent
->d_name
);
410 /* Try to detect bind mounts of the same filesystem instance; they
411 * do not differ in device major/minors. This type of query is not
412 * supported on all kernels or filesystem types though. */
413 if (S_ISDIR(s
.st_mode
) && dir_is_mount_point(d
, dent
->d_name
) > 0) {
414 log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.",
419 /* Do not delete read-only files owned by root */
420 if (s
.st_uid
== 0 && !(s
.st_mode
& S_IWUSR
)) {
421 log_debug("Ignoring \"%s/%s\": read-only and owner by root.", p
, dent
->d_name
);
425 sub_path
= strjoin(p
, "/", dent
->d_name
);
431 /* Is there an item configured for this path? */
432 if (ordered_hashmap_get(items
, sub_path
)) {
433 log_debug("Ignoring \"%s\": a separate entry exists.", sub_path
);
437 if (find_glob(globs
, sub_path
)) {
438 log_debug("Ignoring \"%s\": a separate glob exists.", sub_path
);
442 if (S_ISDIR(s
.st_mode
)) {
445 streq(dent
->d_name
, "lost+found") &&
447 log_debug("Ignoring \"%s\".", sub_path
);
452 log_warning("Reached max depth on \"%s\".", sub_path
);
454 _cleanup_closedir_
DIR *sub_dir
;
457 sub_dir
= xopendirat_nomod(dirfd(d
), dent
->d_name
);
460 r
= log_error_errno(errno
, "opendir(%s) failed: %m", sub_path
);
465 q
= dir_cleanup(i
, sub_path
, sub_dir
, &s
, cutoff
, rootdev
, false, maxdepth
-1, false);
470 /* Note: if you are wondering why we don't
471 * support the sticky bit for excluding
472 * directories from cleaning like we do it for
473 * other file system objects: well, the sticky
474 * bit already has a meaning for directories,
475 * so we don't want to overload that. */
477 if (keep_this_level
) {
478 log_debug("Keeping \"%s\".", sub_path
);
482 /* Ignore ctime, we change it when deleting */
483 age
= timespec_load(&s
.st_mtim
);
485 char a
[FORMAT_TIMESTAMP_MAX
];
486 /* Follows spelling in stat(1). */
487 log_debug("Directory \"%s\": modify time %s is too new.",
489 format_timestamp_us(a
, sizeof(a
), age
));
493 age
= timespec_load(&s
.st_atim
);
495 char a
[FORMAT_TIMESTAMP_MAX
];
496 log_debug("Directory \"%s\": access time %s is too new.",
498 format_timestamp_us(a
, sizeof(a
), age
));
502 log_debug("Removing directory \"%s\".", sub_path
);
503 if (unlinkat(dirfd(d
), dent
->d_name
, AT_REMOVEDIR
) < 0)
504 if (errno
!= ENOENT
&& errno
!= ENOTEMPTY
) {
505 log_error_errno(errno
, "rmdir(%s): %m", sub_path
);
510 /* Skip files for which the sticky bit is
511 * set. These are semantics we define, and are
512 * unknown elsewhere. See XDG_RUNTIME_DIR
513 * specification for details. */
514 if (s
.st_mode
& S_ISVTX
) {
515 log_debug("Skipping \"%s\": sticky bit set.", sub_path
);
519 if (mountpoint
&& S_ISREG(s
.st_mode
))
520 if (s
.st_uid
== 0 && STR_IN_SET(dent
->d_name
,
524 log_debug("Skipping \"%s\".", sub_path
);
528 /* Ignore sockets that are listed in /proc/net/unix */
529 if (S_ISSOCK(s
.st_mode
) && unix_socket_alive(sub_path
)) {
530 log_debug("Skipping \"%s\": live socket.", sub_path
);
534 /* Ignore device nodes */
535 if (S_ISCHR(s
.st_mode
) || S_ISBLK(s
.st_mode
)) {
536 log_debug("Skipping \"%s\": a device.", sub_path
);
540 /* Keep files on this level around if this is
542 if (keep_this_level
) {
543 log_debug("Keeping \"%s\".", sub_path
);
547 age
= timespec_load(&s
.st_mtim
);
549 char a
[FORMAT_TIMESTAMP_MAX
];
550 /* Follows spelling in stat(1). */
551 log_debug("File \"%s\": modify time %s is too new.",
553 format_timestamp_us(a
, sizeof(a
), age
));
557 age
= timespec_load(&s
.st_atim
);
559 char a
[FORMAT_TIMESTAMP_MAX
];
560 log_debug("File \"%s\": access time %s is too new.",
562 format_timestamp_us(a
, sizeof(a
), age
));
566 age
= timespec_load(&s
.st_ctim
);
568 char a
[FORMAT_TIMESTAMP_MAX
];
569 log_debug("File \"%s\": change time %s is too new.",
571 format_timestamp_us(a
, sizeof(a
), age
));
575 log_debug("unlink \"%s\"", sub_path
);
577 if (unlinkat(dirfd(d
), dent
->d_name
, 0) < 0)
579 r
= log_error_errno(errno
, "unlink(%s): %m", sub_path
);
588 char a
[FORMAT_TIMESTAMP_MAX
], b
[FORMAT_TIMESTAMP_MAX
];
590 /* Restore original directory timestamps */
591 times
[0] = ds
->st_atim
;
592 times
[1] = ds
->st_mtim
;
594 age1
= timespec_load(&ds
->st_atim
);
595 age2
= timespec_load(&ds
->st_mtim
);
596 log_debug("Restoring access and modification time on \"%s\": %s, %s",
598 format_timestamp_us(a
, sizeof(a
), age1
),
599 format_timestamp_us(b
, sizeof(b
), age2
));
600 if (futimens(dirfd(d
), times
) < 0)
601 log_error_errno(errno
, "utimensat(%s): %m", p
);
607 static int path_set_perms(Item
*i
, const char *path
) {
608 _cleanup_close_
int fd
= -1;
614 /* We open the file with O_PATH here, to make the operation
615 * somewhat atomic. Also there's unfortunately no fchmodat()
616 * with AT_SYMLINK_NOFOLLOW, hence we emulate it here via
619 fd
= open(path
, O_NOFOLLOW
|O_CLOEXEC
|O_PATH
);
621 int level
= LOG_ERR
, r
= -errno
;
623 /* Option "e" operates only on existing objects. Do not
624 * print errors about non-existent files or directories */
625 if (i
->type
== EMPTY_DIRECTORY
&& errno
== ENOENT
) {
630 log_full_errno(level
, errno
, "Adjusting owner and mode for %s failed: %m", path
);
635 if (fstatat(fd
, "", &st
, AT_EMPTY_PATH
) < 0)
636 return log_error_errno(errno
, "Failed to fstat() file %s: %m", path
);
638 if (S_ISLNK(st
.st_mode
))
639 log_debug("Skipping mode an owner fix for symlink %s.", path
);
641 char fn
[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
642 xsprintf(fn
, "/proc/self/fd/%i", fd
);
644 /* not using i->path directly because it may be a glob */
649 if (!(st
.st_mode
& 0111))
651 if (!(st
.st_mode
& 0222))
653 if (!(st
.st_mode
& 0444))
655 if (!S_ISDIR(st
.st_mode
))
656 m
&= ~07000; /* remove sticky/sgid/suid bit, unless directory */
659 if (m
== (st
.st_mode
& 07777))
660 log_debug("\"%s\" has right mode %o", path
, st
.st_mode
);
662 log_debug("chmod \"%s\" to mode %o", path
, m
);
663 if (chmod(fn
, m
) < 0)
664 return log_error_errno(errno
, "chmod() of %s via %s failed: %m", path
, fn
);
668 if ((i
->uid
!= st
.st_uid
|| i
->gid
!= st
.st_gid
) &&
669 (i
->uid_set
|| i
->gid_set
)) {
670 log_debug("chown \"%s\" to "UID_FMT
"."GID_FMT
,
672 i
->uid_set
? i
->uid
: UID_INVALID
,
673 i
->gid_set
? i
->gid
: GID_INVALID
);
675 i
->uid_set
? i
->uid
: UID_INVALID
,
676 i
->gid_set
? i
->gid
: GID_INVALID
) < 0)
677 return log_error_errno(errno
, "chown() of %s via %s failed: %m", path
, fn
);
683 return label_fix(path
, false, false);
686 static int parse_xattrs_from_arg(Item
*i
) {
696 _cleanup_free_
char *name
= NULL
, *value
= NULL
, *xattr
= NULL
, *xattr_replaced
= NULL
;
698 r
= extract_first_word(&p
, &xattr
, NULL
, EXTRACT_QUOTES
|EXTRACT_CUNESCAPE
);
700 log_warning_errno(r
, "Failed to parse extended attribute '%s', ignoring: %m", p
);
704 r
= specifier_printf(xattr
, specifier_table
, NULL
, &xattr_replaced
);
706 return log_error_errno(r
, "Failed to replace specifiers in extended attribute '%s': %m", xattr
);
708 r
= split_pair(xattr_replaced
, "=", &name
, &value
);
710 log_warning_errno(r
, "Failed to parse extended attribute, ignoring: %s", xattr
);
714 if (isempty(name
) || isempty(value
)) {
715 log_warning("Malformed extended attribute found, ignoring: %s", xattr
);
719 if (strv_push_pair(&i
->xattrs
, name
, value
) < 0)
728 static int path_set_xattrs(Item
*i
, const char *path
) {
729 char **name
, **value
;
734 STRV_FOREACH_PAIR(name
, value
, i
->xattrs
) {
738 log_debug("Setting extended attribute '%s=%s' on %s.", *name
, *value
, path
);
739 if (lsetxattr(path
, *name
, *value
, n
, 0) < 0)
740 return log_error_errno(errno
, "Setting extended attribute %s=%s on %s failed: %m",
741 *name
, *value
, path
);
746 static int parse_acls_from_arg(Item
*item
) {
752 /* If force (= modify) is set, we will not modify the acl
753 * afterwards, so the mask can be added now if necessary. */
755 r
= parse_acl(item
->argument
, &item
->acl_access
, &item
->acl_default
, !item
->force
);
757 log_warning_errno(r
, "Failed to parse ACL \"%s\": %m. Ignoring", item
->argument
);
759 log_warning_errno(ENOSYS
, "ACLs are not supported. Ignoring");
766 static int path_set_acl(const char *path
, const char *pretty
, acl_type_t type
, acl_t acl
, bool modify
) {
767 _cleanup_(acl_free_charpp
) char *t
= NULL
;
768 _cleanup_(acl_freep
) acl_t dup
= NULL
;
771 /* Returns 0 for success, positive error if already warned,
772 * negative error otherwise. */
775 r
= acls_for_file(path
, type
, acl
, &dup
);
779 r
= calc_acl_mask_if_needed(&dup
);
787 /* the mask was already added earlier if needed */
790 r
= add_base_acls_if_needed(&dup
, path
);
794 t
= acl_to_any_text(dup
, NULL
, ',', TEXT_ABBREVIATE
);
795 log_debug("Setting %s ACL %s on %s.",
796 type
== ACL_TYPE_ACCESS
? "access" : "default",
799 r
= acl_set_file(path
, type
, dup
);
801 /* Return positive to indicate we already warned */
802 return -log_error_errno(errno
,
803 "Setting %s ACL \"%s\" on %s failed: %m",
804 type
== ACL_TYPE_ACCESS
? "access" : "default",
811 static int path_set_acls(Item
*item
, const char *path
) {
814 char fn
[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
815 _cleanup_close_
int fd
= -1;
821 fd
= open(path
, O_NOFOLLOW
|O_CLOEXEC
|O_PATH
);
823 return log_error_errno(errno
, "Adjusting ACL of %s failed: %m", path
);
825 if (fstatat(fd
, "", &st
, AT_EMPTY_PATH
) < 0)
826 return log_error_errno(errno
, "Failed to fstat() file %s: %m", path
);
828 if (S_ISLNK(st
.st_mode
)) {
829 log_debug("Skipping ACL fix for symlink %s.", path
);
833 xsprintf(fn
, "/proc/self/fd/%i", fd
);
835 if (item
->acl_access
)
836 r
= path_set_acl(fn
, path
, ACL_TYPE_ACCESS
, item
->acl_access
, item
->force
);
838 if (r
== 0 && item
->acl_default
)
839 r
= path_set_acl(fn
, path
, ACL_TYPE_DEFAULT
, item
->acl_default
, item
->force
);
842 return -r
; /* already warned */
843 else if (r
== -EOPNOTSUPP
) {
844 log_debug_errno(r
, "ACLs not supported by file system at %s", path
);
847 log_error_errno(r
, "ACL operation on \"%s\" failed: %m", path
);
852 #define ATTRIBUTES_ALL \
861 FS_JOURNAL_DATA_FL | \
868 static int parse_attribute_from_arg(Item
*item
) {
870 static const struct {
874 { 'A', FS_NOATIME_FL
}, /* do not update atime */
875 { 'S', FS_SYNC_FL
}, /* Synchronous updates */
876 { 'D', FS_DIRSYNC_FL
}, /* dirsync behaviour (directories only) */
877 { 'a', FS_APPEND_FL
}, /* writes to file may only append */
878 { 'c', FS_COMPR_FL
}, /* Compress file */
879 { 'd', FS_NODUMP_FL
}, /* do not dump file */
880 { 'e', FS_EXTENT_FL
}, /* Extents */
881 { 'i', FS_IMMUTABLE_FL
}, /* Immutable file */
882 { 'j', FS_JOURNAL_DATA_FL
}, /* Reserved for ext3 */
883 { 's', FS_SECRM_FL
}, /* Secure deletion */
884 { 'u', FS_UNRM_FL
}, /* Undelete */
885 { 't', FS_NOTAIL_FL
}, /* file tail should not be merged */
886 { 'T', FS_TOPDIR_FL
}, /* Top of directory hierarchies */
887 { 'C', FS_NOCOW_FL
}, /* Do not cow file */
896 unsigned value
= 0, mask
= 0;
906 } else if (*p
== '-') {
909 } else if (*p
== '=') {
915 if (isempty(p
) && mode
!= MODE_SET
) {
916 log_error("Setting file attribute on '%s' needs an attribute specification.", item
->path
);
920 for (; p
&& *p
; p
++) {
923 for (i
= 0; i
< ELEMENTSOF(attributes
); i
++)
924 if (*p
== attributes
[i
].character
)
927 if (i
>= ELEMENTSOF(attributes
)) {
928 log_error("Unknown file attribute '%c' on '%s'.", *p
, item
->path
);
932 v
= attributes
[i
].value
;
934 SET_FLAG(value
, v
, (mode
== MODE_ADD
|| mode
== MODE_SET
));
939 if (mode
== MODE_SET
)
940 mask
|= ATTRIBUTES_ALL
;
944 item
->attribute_mask
= mask
;
945 item
->attribute_value
= value
;
946 item
->attribute_set
= true;
951 static int path_set_attribute(Item
*item
, const char *path
) {
952 _cleanup_close_
int fd
= -1;
957 if (!item
->attribute_set
|| item
->attribute_mask
== 0)
960 fd
= open(path
, O_RDONLY
|O_NONBLOCK
|O_CLOEXEC
|O_NOATIME
|O_NOFOLLOW
);
963 return log_error_errno(errno
, "Skipping file attributes adjustment on symlink %s.", path
);
965 return log_error_errno(errno
, "Cannot open '%s': %m", path
);
968 if (fstat(fd
, &st
) < 0)
969 return log_error_errno(errno
, "Cannot stat '%s': %m", path
);
971 /* Issuing the file attribute ioctls on device nodes is not
972 * safe, as that will be delivered to the drivers, not the
973 * file system containing the device node. */
974 if (!S_ISREG(st
.st_mode
) && !S_ISDIR(st
.st_mode
)) {
975 log_error("Setting file flags is only supported on regular files and directories, cannot set on '%s'.", path
);
979 f
= item
->attribute_value
& item
->attribute_mask
;
981 /* Mask away directory-specific flags */
982 if (!S_ISDIR(st
.st_mode
))
985 r
= chattr_fd(fd
, f
, item
->attribute_mask
);
987 log_full_errno(r
== -ENOTTY
|| r
== -EOPNOTSUPP
? LOG_DEBUG
: LOG_WARNING
,
989 "Cannot set file attribute for '%s', value=0x%08x, mask=0x%08x: %m",
990 path
, item
->attribute_value
, item
->attribute_mask
);
995 static int write_one_file(Item
*i
, const char *path
) {
996 _cleanup_close_
int fd
= -1;
1003 flags
= i
->type
== CREATE_FILE
? O_CREAT
|O_APPEND
|O_NOFOLLOW
:
1004 i
->type
== TRUNCATE_FILE
? O_CREAT
|O_TRUNC
|O_NOFOLLOW
: 0;
1006 RUN_WITH_UMASK(0000) {
1007 mac_selinux_create_file_prepare(path
, S_IFREG
);
1008 fd
= open(path
, flags
|O_NDELAY
|O_CLOEXEC
|O_WRONLY
|O_NOCTTY
, i
->mode
);
1009 mac_selinux_create_file_clear();
1013 if (i
->type
== WRITE_FILE
&& errno
== ENOENT
) {
1014 log_debug_errno(errno
, "Not writing \"%s\": %m", path
);
1019 if (!i
->argument
&& errno
== EROFS
&& stat(path
, &st
) == 0 &&
1020 (i
->type
== CREATE_FILE
|| st
.st_size
== 0))
1023 return log_error_errno(r
, "Failed to create file %s: %m", path
);
1027 _cleanup_free_
char *unescaped
= NULL
, *replaced
= NULL
;
1029 log_debug("%s to \"%s\".", i
->type
== CREATE_FILE
? "Appending" : "Writing", path
);
1031 r
= cunescape(i
->argument
, 0, &unescaped
);
1033 return log_error_errno(r
, "Failed to unescape parameter to write: %s", i
->argument
);
1035 r
= specifier_printf(unescaped
, specifier_table
, NULL
, &replaced
);
1037 return log_error_errno(r
, "Failed to replace specifiers in parameter to write '%s': %m", unescaped
);
1039 r
= loop_write(fd
, replaced
, strlen(replaced
), false);
1041 return log_error_errno(r
, "Failed to write file \"%s\": %m", path
);
1043 log_debug("\"%s\" has been created.", path
);
1045 fd
= safe_close(fd
);
1047 if (stat(path
, &st
) < 0)
1048 return log_error_errno(errno
, "stat(%s) failed: %m", path
);
1051 if (!S_ISREG(st
.st_mode
)) {
1052 log_error("%s is not a file.", path
);
1056 r
= path_set_perms(i
, path
);
1063 typedef int (*action_t
)(Item
*, const char *);
1065 static int item_do_children(Item
*i
, const char *path
, action_t action
) {
1066 _cleanup_closedir_
DIR *d
;
1073 /* This returns the first error we run into, but nevertheless
1076 d
= opendir_nomod(path
);
1078 return errno
== ENOENT
|| errno
== ENOTDIR
? 0 : -errno
;
1080 FOREACH_DIRENT_ALL(de
, d
, r
= -errno
) {
1081 _cleanup_free_
char *p
= NULL
;
1084 if (dot_or_dot_dot(de
->d_name
))
1087 p
= strjoin(path
, "/", de
->d_name
);
1092 if (q
< 0 && q
!= -ENOENT
&& r
== 0)
1095 if (IN_SET(de
->d_type
, DT_UNKNOWN
, DT_DIR
)) {
1096 q
= item_do_children(i
, p
, action
);
1097 if (q
< 0 && r
== 0)
1105 static int glob_item(Item
*i
, action_t action
, bool recursive
) {
1106 _cleanup_globfree_ glob_t g
= {
1107 .gl_opendir
= (void *(*)(const char *)) opendir_nomod
,
1112 k
= safe_glob(i
->path
, GLOB_NOSORT
|GLOB_BRACE
, &g
);
1113 if (k
< 0 && k
!= -ENOENT
)
1114 return log_error_errno(k
, "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
, i
->uid_set
? i
->uid
: UID_INVALID
, i
->gid_set
? i
->gid
: GID_INVALID
, COPY_REFLINK
);
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
:
1220 RUN_WITH_UMASK(0000)
1221 mkdir_parents_label(i
->path
, 0755);
1223 if (IN_SET(i
->type
, CREATE_SUBVOLUME
, CREATE_SUBVOLUME_INHERIT_QUOTA
, CREATE_SUBVOLUME_NEW_QUOTA
)) {
1225 if (btrfs_is_subvol(isempty(arg_root
) ? "/" : arg_root
) <= 0)
1227 /* Don't create a subvolume unless the
1228 * root directory is one, too. We do
1229 * this under the assumption that if
1230 * the root directory is just a plain
1231 * directory (i.e. very light-weight),
1232 * we shouldn't try to split it up
1233 * into subvolumes (i.e. more
1234 * heavy-weight). Thus, chroot()
1235 * environments and suchlike will get
1236 * a full brtfs subvolume set up below
1237 * their tree only if they
1238 * specifically set up a btrfs
1239 * subvolume for the root dir too. */
1243 RUN_WITH_UMASK((~i
->mode
) & 0777)
1244 r
= btrfs_subvol_make(i
->path
);
1249 if (IN_SET(i
->type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
) || r
== -ENOTTY
)
1250 RUN_WITH_UMASK(0000)
1251 r
= mkdir_label(i
->path
, i
->mode
);
1256 if (r
!= -EEXIST
&& r
!= -EROFS
)
1257 return log_error_errno(r
, "Failed to create directory or subvolume \"%s\": %m", i
->path
);
1259 k
= is_dir(i
->path
, false);
1260 if (k
== -ENOENT
&& r
== -EROFS
)
1261 return log_error_errno(r
, "%s does not exist and cannot be created as the file system is read-only.", i
->path
);
1263 return log_error_errno(k
, "Failed to check if %s exists: %m", i
->path
);
1265 log_warning("\"%s\" already exists and is not a directory.", i
->path
);
1269 creation
= CREATION_EXISTING
;
1271 creation
= CREATION_NORMAL
;
1273 log_debug("%s directory \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1275 if (IN_SET(i
->type
, CREATE_SUBVOLUME_NEW_QUOTA
, CREATE_SUBVOLUME_INHERIT_QUOTA
)) {
1276 r
= btrfs_subvol_auto_qgroup(i
->path
, 0, i
->type
== CREATE_SUBVOLUME_NEW_QUOTA
);
1278 log_debug_errno(r
, "Couldn't adjust quota for subvolume \"%s\" (unsupported fs or dir not a subvolume): %m", i
->path
);
1279 else if (r
== -EROFS
)
1280 log_debug_errno(r
, "Couldn't adjust quota for subvolume \"%s\" (fs is read-only).", i
->path
);
1281 else if (r
== -ENOPROTOOPT
)
1282 log_debug_errno(r
, "Couldn't adjust quota for subvolume \"%s\" (quota support is disabled).", i
->path
);
1284 q
= log_error_errno(r
, "Failed to adjust quota for subvolume \"%s\": %m", i
->path
);
1286 log_debug("Adjusted quota for subvolume \"%s\".", i
->path
);
1288 log_debug("Quota for subvolume \"%s\" already in place, no change made.", i
->path
);
1293 case EMPTY_DIRECTORY
:
1294 r
= path_set_perms(i
, i
->path
);
1303 RUN_WITH_UMASK(0000) {
1304 mac_selinux_create_file_prepare(i
->path
, S_IFIFO
);
1305 r
= mkfifo(i
->path
, i
->mode
);
1306 mac_selinux_create_file_clear();
1310 if (errno
!= EEXIST
)
1311 return log_error_errno(errno
, "Failed to create fifo %s: %m", i
->path
);
1313 if (lstat(i
->path
, &st
) < 0)
1314 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1316 if (!S_ISFIFO(st
.st_mode
)) {
1319 RUN_WITH_UMASK(0000) {
1320 mac_selinux_create_file_prepare(i
->path
, S_IFIFO
);
1321 r
= mkfifo_atomic(i
->path
, i
->mode
);
1322 mac_selinux_create_file_clear();
1326 return log_error_errno(r
, "Failed to create fifo %s: %m", i
->path
);
1327 creation
= CREATION_FORCE
;
1329 log_warning("\"%s\" already exists and is not a fifo.", i
->path
);
1333 creation
= CREATION_EXISTING
;
1335 creation
= CREATION_NORMAL
;
1336 log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1338 r
= path_set_perms(i
, i
->path
);
1345 case CREATE_SYMLINK
: {
1346 r
= specifier_printf(i
->argument
, specifier_table
, NULL
, &resolved
);
1348 return log_error_errno(r
, "Failed to substitute specifiers in symlink target %s: %m", i
->argument
);
1350 mac_selinux_create_file_prepare(i
->path
, S_IFLNK
);
1351 r
= symlink(resolved
, i
->path
);
1352 mac_selinux_create_file_clear();
1355 _cleanup_free_
char *x
= NULL
;
1357 if (errno
!= EEXIST
)
1358 return log_error_errno(errno
, "symlink(%s, %s) failed: %m", resolved
, i
->path
);
1360 r
= readlink_malloc(i
->path
, &x
);
1361 if (r
< 0 || !streq(resolved
, x
)) {
1364 mac_selinux_create_file_prepare(i
->path
, S_IFLNK
);
1365 r
= symlink_atomic(resolved
, i
->path
);
1366 mac_selinux_create_file_clear();
1368 if (IN_SET(r
, -EEXIST
, -ENOTEMPTY
)) {
1369 r
= rm_rf(i
->path
, REMOVE_ROOT
|REMOVE_PHYSICAL
);
1371 return log_error_errno(r
, "rm -fr %s failed: %m", i
->path
);
1373 mac_selinux_create_file_prepare(i
->path
, S_IFLNK
);
1374 r
= symlink(resolved
, i
->path
) < 0 ? -errno
: 0;
1375 mac_selinux_create_file_clear();
1378 return log_error_errno(r
, "symlink(%s, %s) failed: %m", resolved
, i
->path
);
1380 creation
= CREATION_FORCE
;
1382 log_debug("\"%s\" is not a symlink or does not point to the correct path.", i
->path
);
1386 creation
= CREATION_EXISTING
;
1389 creation
= CREATION_NORMAL
;
1390 log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1394 case CREATE_BLOCK_DEVICE
:
1395 case CREATE_CHAR_DEVICE
: {
1398 if (have_effective_cap(CAP_MKNOD
) == 0) {
1399 /* In a container we lack CAP_MKNOD. We
1400 shouldn't attempt to create the device node in
1401 that case to avoid noise, and we don't support
1402 virtualized devices in containers anyway. */
1404 log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i
->path
);
1408 file_type
= i
->type
== CREATE_BLOCK_DEVICE
? S_IFBLK
: S_IFCHR
;
1410 RUN_WITH_UMASK(0000) {
1411 mac_selinux_create_file_prepare(i
->path
, file_type
);
1412 r
= mknod(i
->path
, i
->mode
| file_type
, i
->major_minor
);
1413 mac_selinux_create_file_clear();
1417 if (errno
== EPERM
) {
1418 log_debug("We lack permissions, possibly because of cgroup configuration; "
1419 "skipping creation of device node %s.", i
->path
);
1423 if (errno
!= EEXIST
)
1424 return log_error_errno(errno
, "Failed to create device node %s: %m", i
->path
);
1426 if (lstat(i
->path
, &st
) < 0)
1427 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1429 if ((st
.st_mode
& S_IFMT
) != file_type
) {
1433 RUN_WITH_UMASK(0000) {
1434 mac_selinux_create_file_prepare(i
->path
, file_type
);
1435 r
= mknod_atomic(i
->path
, i
->mode
| file_type
, i
->major_minor
);
1436 mac_selinux_create_file_clear();
1440 return log_error_errno(r
, "Failed to create device node \"%s\": %m", i
->path
);
1441 creation
= CREATION_FORCE
;
1443 log_debug("%s is not a device node.", i
->path
);
1447 creation
= CREATION_EXISTING
;
1449 creation
= CREATION_NORMAL
;
1451 log_debug("%s %s device node \"%s\" %u:%u.",
1452 creation_mode_verb_to_string(creation
),
1453 i
->type
== CREATE_BLOCK_DEVICE
? "block" : "char",
1454 i
->path
, major(i
->mode
), minor(i
->mode
));
1456 r
= path_set_perms(i
, i
->path
);
1465 r
= glob_item(i
, path_set_perms
, false);
1470 case RECURSIVE_RELABEL_PATH
:
1471 r
= glob_item(i
, path_set_perms
, true);
1477 r
= glob_item(i
, path_set_xattrs
, false);
1482 case RECURSIVE_SET_XATTR
:
1483 r
= glob_item(i
, path_set_xattrs
, true);
1489 r
= glob_item(i
, path_set_acls
, false);
1494 case RECURSIVE_SET_ACL
:
1495 r
= glob_item(i
, path_set_acls
, true);
1501 r
= glob_item(i
, path_set_attribute
, false);
1506 case RECURSIVE_SET_ATTRIBUTE
:
1507 r
= glob_item(i
, path_set_attribute
, true);
1516 static int remove_item_instance(Item
*i
, const char *instance
) {
1524 if (remove(instance
) < 0 && errno
!= ENOENT
)
1525 return log_error_errno(errno
, "rm(%s): %m", instance
);
1529 case TRUNCATE_DIRECTORY
:
1530 case RECURSIVE_REMOVE_PATH
:
1531 /* FIXME: we probably should use dir_cleanup() here
1532 * instead of rm_rf() so that 'x' is honoured. */
1533 log_debug("rm -rf \"%s\"", instance
);
1534 r
= rm_rf(instance
, (i
->type
== RECURSIVE_REMOVE_PATH
? REMOVE_ROOT
|REMOVE_SUBVOLUME
: 0) | REMOVE_PHYSICAL
);
1535 if (r
< 0 && r
!= -ENOENT
)
1536 return log_error_errno(r
, "rm_rf(%s): %m", instance
);
1541 assert_not_reached("wut?");
1547 static int remove_item(Item
*i
) {
1550 log_debug("Running remove action for entry %c %s", (char) i
->type
, i
->path
);
1555 case TRUNCATE_DIRECTORY
:
1556 case RECURSIVE_REMOVE_PATH
:
1557 return glob_item(i
, remove_item_instance
, false);
1564 static int clean_item_instance(Item
*i
, const char* instance
) {
1565 _cleanup_closedir_
DIR *d
= NULL
;
1569 char timestamp
[FORMAT_TIMESTAMP_MAX
];
1576 n
= now(CLOCK_REALTIME
);
1580 cutoff
= n
- i
->age
;
1582 d
= opendir_nomod(instance
);
1584 if (IN_SET(errno
, ENOENT
, ENOTDIR
)) {
1585 log_debug_errno(errno
, "Directory \"%s\": %m", instance
);
1589 return log_error_errno(errno
, "Failed to open directory %s: %m", instance
);
1592 if (fstat(dirfd(d
), &s
) < 0)
1593 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1595 if (!S_ISDIR(s
.st_mode
)) {
1596 log_error("%s is not a directory.", i
->path
);
1600 if (fstatat(dirfd(d
), "..", &ps
, AT_SYMLINK_NOFOLLOW
) != 0)
1601 return log_error_errno(errno
, "stat(%s/..) failed: %m", i
->path
);
1603 mountpoint
= s
.st_dev
!= ps
.st_dev
|| s
.st_ino
== ps
.st_ino
;
1605 log_debug("Cleanup threshold for %s \"%s\" is %s",
1606 mountpoint
? "mount point" : "directory",
1608 format_timestamp_us(timestamp
, sizeof(timestamp
), cutoff
));
1610 return dir_cleanup(i
, instance
, d
, &s
, cutoff
, s
.st_dev
, mountpoint
,
1611 MAX_DEPTH
, i
->keep_first_level
);
1614 static int clean_item(Item
*i
) {
1617 log_debug("Running clean action for entry %c %s", (char) i
->type
, i
->path
);
1620 case CREATE_DIRECTORY
:
1621 case CREATE_SUBVOLUME
:
1622 case CREATE_SUBVOLUME_INHERIT_QUOTA
:
1623 case CREATE_SUBVOLUME_NEW_QUOTA
:
1624 case EMPTY_DIRECTORY
:
1625 case TRUNCATE_DIRECTORY
:
1628 clean_item_instance(i
, i
->path
);
1630 case IGNORE_DIRECTORY_PATH
:
1631 return glob_item(i
, clean_item_instance
, false);
1637 static int process_item_array(ItemArray
*array
);
1639 static int process_item(Item
*i
) {
1641 _cleanup_free_
char *prefix
= NULL
;
1650 prefix
= malloc(strlen(i
->path
) + 1);
1654 PATH_FOREACH_PREFIX(prefix
, i
->path
) {
1657 j
= ordered_hashmap_get(items
, prefix
);
1661 s
= process_item_array(j
);
1662 if (s
< 0 && t
== 0)
1667 r
= arg_create
? create_item(i
) : 0;
1668 q
= arg_remove
? remove_item(i
) : 0;
1669 p
= arg_clean
? clean_item(i
) : 0;
1677 static int process_item_array(ItemArray
*array
) {
1683 for (n
= 0; n
< array
->count
; n
++) {
1684 k
= process_item(array
->items
+ n
);
1685 if (k
< 0 && r
== 0)
1692 static void item_free_contents(Item
*i
) {
1696 strv_free(i
->xattrs
);
1699 acl_free(i
->acl_access
);
1700 acl_free(i
->acl_default
);
1704 static void item_array_free(ItemArray
*a
) {
1710 for (n
= 0; n
< a
->count
; n
++)
1711 item_free_contents(a
->items
+ n
);
1716 static int item_compare(const void *a
, const void *b
) {
1717 const Item
*x
= a
, *y
= b
;
1719 /* Make sure that the ownership taking item is put first, so
1720 * that we first create the node, and then can adjust it */
1722 if (takes_ownership(x
->type
) && !takes_ownership(y
->type
))
1724 if (!takes_ownership(x
->type
) && takes_ownership(y
->type
))
1727 return (int) x
->type
- (int) y
->type
;
1730 static bool item_compatible(Item
*a
, Item
*b
) {
1733 assert(streq(a
->path
, b
->path
));
1735 if (takes_ownership(a
->type
) && takes_ownership(b
->type
))
1736 /* check if the items are the same */
1737 return streq_ptr(a
->argument
, b
->argument
) &&
1739 a
->uid_set
== b
->uid_set
&&
1742 a
->gid_set
== b
->gid_set
&&
1745 a
->mode_set
== b
->mode_set
&&
1746 a
->mode
== b
->mode
&&
1748 a
->age_set
== b
->age_set
&&
1751 a
->mask_perms
== b
->mask_perms
&&
1753 a
->keep_first_level
== b
->keep_first_level
&&
1755 a
->major_minor
== b
->major_minor
;
1760 static bool should_include_path(const char *path
) {
1763 STRV_FOREACH(prefix
, arg_exclude_prefixes
)
1764 if (path_startswith(path
, *prefix
)) {
1765 log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.",
1770 STRV_FOREACH(prefix
, arg_include_prefixes
)
1771 if (path_startswith(path
, *prefix
)) {
1772 log_debug("Entry \"%s\" matches include prefix \"%s\".", path
, *prefix
);
1776 /* no matches, so we should include this path only if we
1777 * have no whitelist at all */
1778 if (strv_length(arg_include_prefixes
) == 0)
1781 log_debug("Entry \"%s\" does not match any include prefix, skipping.", path
);
1785 static int parse_line(const char *fname
, unsigned line
, const char *buffer
) {
1787 _cleanup_free_
char *action
= NULL
, *mode
= NULL
, *user
= NULL
, *group
= NULL
, *age
= NULL
, *path
= NULL
;
1788 _cleanup_(item_free_contents
) Item i
= {};
1789 ItemArray
*existing
;
1792 bool force
= false, boot
= false;
1798 r
= extract_many_words(
1810 return log_error_errno(r
, "[%s:%u] Failed to parse line: %m", fname
, line
);
1812 log_error("[%s:%u] Syntax error.", fname
, line
);
1816 if (!isempty(buffer
) && !streq(buffer
, "-")) {
1817 i
.argument
= strdup(buffer
);
1822 if (isempty(action
)) {
1823 log_error("[%s:%u] Command too short '%s'.", fname
, line
, action
);
1827 for (pos
= 1; action
[pos
]; pos
++) {
1828 if (action
[pos
] == '!' && !boot
)
1830 else if (action
[pos
] == '+' && !force
)
1833 log_error("[%s:%u] Unknown modifiers in command '%s'",
1834 fname
, line
, action
);
1839 if (boot
&& !arg_boot
) {
1840 log_debug("Ignoring entry %s \"%s\" because --boot is not specified.",
1848 r
= specifier_printf(path
, specifier_table
, NULL
, &i
.path
);
1850 log_error("[%s:%u] Failed to replace specifiers: %s", fname
, line
, path
);
1856 case CREATE_DIRECTORY
:
1857 case CREATE_SUBVOLUME
:
1858 case CREATE_SUBVOLUME_INHERIT_QUOTA
:
1859 case CREATE_SUBVOLUME_NEW_QUOTA
:
1860 case EMPTY_DIRECTORY
:
1861 case TRUNCATE_DIRECTORY
:
1864 case IGNORE_DIRECTORY_PATH
:
1866 case RECURSIVE_REMOVE_PATH
:
1869 case RECURSIVE_RELABEL_PATH
:
1871 log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname
, line
, i
.type
);
1879 case CREATE_SYMLINK
:
1881 i
.argument
= strappend("/usr/share/factory/", i
.path
);
1889 log_error("[%s:%u] Write file requires argument.", fname
, line
);
1896 i
.argument
= strappend("/usr/share/factory/", i
.path
);
1899 } else if (!path_is_absolute(i
.argument
)) {
1900 log_error("[%s:%u] Source path is not absolute.", fname
, line
);
1904 path_kill_slashes(i
.argument
);
1907 case CREATE_CHAR_DEVICE
:
1908 case CREATE_BLOCK_DEVICE
: {
1909 unsigned major
, minor
;
1912 log_error("[%s:%u] Device file requires argument.", fname
, line
);
1916 if (sscanf(i
.argument
, "%u:%u", &major
, &minor
) != 2) {
1917 log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname
, line
, i
.argument
);
1921 i
.major_minor
= makedev(major
, minor
);
1926 case RECURSIVE_SET_XATTR
:
1928 log_error("[%s:%u] Set extended attribute requires argument.", fname
, line
);
1931 r
= parse_xattrs_from_arg(&i
);
1937 case RECURSIVE_SET_ACL
:
1939 log_error("[%s:%u] Set ACLs requires argument.", fname
, line
);
1942 r
= parse_acls_from_arg(&i
);
1948 case RECURSIVE_SET_ATTRIBUTE
:
1950 log_error("[%s:%u] Set file attribute requires argument.", fname
, line
);
1953 r
= parse_attribute_from_arg(&i
);
1959 log_error("[%s:%u] Unknown command type '%c'.", fname
, line
, (char) i
.type
);
1963 if (!path_is_absolute(i
.path
)) {
1964 log_error("[%s:%u] Path '%s' not absolute.", fname
, line
, i
.path
);
1968 path_kill_slashes(i
.path
);
1970 if (!should_include_path(i
.path
))
1976 p
= prefix_root(arg_root
, i
.path
);
1984 if (!isempty(user
) && !streq(user
, "-")) {
1985 const char *u
= user
;
1987 r
= get_user_creds(&u
, &i
.uid
, NULL
, NULL
, NULL
);
1989 log_error("[%s:%u] Unknown user '%s'.", fname
, line
, user
);
1996 if (!isempty(group
) && !streq(group
, "-")) {
1997 const char *g
= group
;
1999 r
= get_group_creds(&g
, &i
.gid
);
2001 log_error("[%s:%u] Unknown group '%s'.", fname
, line
, group
);
2008 if (!isempty(mode
) && !streq(mode
, "-")) {
2009 const char *mm
= mode
;
2013 i
.mask_perms
= true;
2017 if (parse_mode(mm
, &m
) < 0) {
2018 log_error("[%s:%u] Invalid mode '%s'.", fname
, line
, mode
);
2025 i
.mode
= IN_SET(i
.type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
, CREATE_SUBVOLUME
, CREATE_SUBVOLUME_INHERIT_QUOTA
, CREATE_SUBVOLUME_NEW_QUOTA
) ? 0755 : 0644;
2027 if (!isempty(age
) && !streq(age
, "-")) {
2028 const char *a
= age
;
2031 i
.keep_first_level
= true;
2035 if (parse_sec(a
, &i
.age
) < 0) {
2036 log_error("[%s:%u] Invalid age '%s'.", fname
, line
, age
);
2043 h
= needs_glob(i
.type
) ? globs
: items
;
2045 existing
= ordered_hashmap_get(h
, i
.path
);
2049 for (n
= 0; n
< existing
->count
; n
++) {
2050 if (!item_compatible(existing
->items
+ n
, &i
)) {
2051 log_warning("[%s:%u] Duplicate line for path \"%s\", ignoring.",
2052 fname
, line
, i
.path
);
2057 existing
= new0(ItemArray
, 1);
2058 r
= ordered_hashmap_put(h
, i
.path
, existing
);
2063 if (!GREEDY_REALLOC(existing
->items
, existing
->size
, existing
->count
+ 1))
2066 memcpy(existing
->items
+ existing
->count
++, &i
, sizeof(i
));
2068 /* Sort item array, to enforce stable ordering of application */
2069 qsort_safe(existing
->items
, existing
->count
, sizeof(Item
), item_compare
);
2075 static void help(void) {
2076 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
2077 "Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
2078 " -h --help Show this help\n"
2079 " --version Show package version\n"
2080 " --create Create marked files/directories\n"
2081 " --clean Clean up marked directories\n"
2082 " --remove Remove marked files/directories\n"
2083 " --boot Execute actions only safe at boot\n"
2084 " --prefix=PATH Only apply rules with the specified prefix\n"
2085 " --exclude-prefix=PATH Ignore rules with the specified prefix\n"
2086 " --root=PATH Operate on an alternate filesystem root\n",
2087 program_invocation_short_name
);
2090 static int parse_argv(int argc
, char *argv
[]) {
2093 ARG_VERSION
= 0x100,
2103 static const struct option options
[] = {
2104 { "help", no_argument
, NULL
, 'h' },
2105 { "version", no_argument
, NULL
, ARG_VERSION
},
2106 { "create", no_argument
, NULL
, ARG_CREATE
},
2107 { "clean", no_argument
, NULL
, ARG_CLEAN
},
2108 { "remove", no_argument
, NULL
, ARG_REMOVE
},
2109 { "boot", no_argument
, NULL
, ARG_BOOT
},
2110 { "prefix", required_argument
, NULL
, ARG_PREFIX
},
2111 { "exclude-prefix", required_argument
, NULL
, ARG_EXCLUDE_PREFIX
},
2112 { "root", required_argument
, NULL
, ARG_ROOT
},
2121 while ((c
= getopt_long(argc
, argv
, "h", options
, NULL
)) >= 0)
2149 if (strv_push(&arg_include_prefixes
, optarg
) < 0)
2153 case ARG_EXCLUDE_PREFIX
:
2154 if (strv_push(&arg_exclude_prefixes
, optarg
) < 0)
2159 r
= parse_path_argument_and_warn(optarg
, true, &arg_root
);
2168 assert_not_reached("Unhandled option");
2171 if (!arg_clean
&& !arg_create
&& !arg_remove
) {
2172 log_error("You need to specify at least one of --clean, --create or --remove.");
2179 static int read_config_file(const char *fn
, bool ignore_enoent
) {
2180 _cleanup_fclose_
FILE *_f
= NULL
;
2182 char line
[LINE_MAX
];
2190 if (streq(fn
, "-")) {
2191 log_debug("Reading config from stdin.");
2195 r
= search_and_fopen_nulstr(fn
, "re", arg_root
, conf_file_dirs
, &_f
);
2197 if (ignore_enoent
&& r
== -ENOENT
) {
2198 log_debug_errno(r
, "Failed to open \"%s\", ignoring: %m", fn
);
2202 return log_error_errno(r
, "Failed to open '%s': %m", fn
);
2204 log_debug("Reading config file \"%s\".", fn
);
2208 FOREACH_LINE(line
, f
, break) {
2215 if (*l
== '#' || *l
== 0)
2218 k
= parse_line(fn
, v
, l
);
2219 if (k
< 0 && r
== 0)
2223 /* we have to determine age parameter for each entry of type X */
2224 ORDERED_HASHMAP_FOREACH(i
, globs
, iterator
) {
2226 Item
*j
, *candidate_item
= NULL
;
2228 if (i
->type
!= IGNORE_DIRECTORY_PATH
)
2231 ORDERED_HASHMAP_FOREACH(j
, items
, iter
) {
2232 if (!IN_SET(j
->type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
, CREATE_SUBVOLUME
, CREATE_SUBVOLUME_INHERIT_QUOTA
, CREATE_SUBVOLUME_NEW_QUOTA
))
2235 if (path_equal(j
->path
, i
->path
)) {
2240 if ((!candidate_item
&& path_startswith(i
->path
, j
->path
)) ||
2241 (candidate_item
&& path_startswith(j
->path
, candidate_item
->path
) && (fnmatch(i
->path
, j
->path
, FNM_PATHNAME
| FNM_PERIOD
) == 0)))
2245 if (candidate_item
&& candidate_item
->age_set
) {
2246 i
->age
= candidate_item
->age
;
2252 log_error_errno(errno
, "Failed to read from file %s: %m", fn
);
2260 int main(int argc
, char *argv
[]) {
2265 r
= parse_argv(argc
, argv
);
2269 log_set_target(LOG_TARGET_AUTO
);
2270 log_parse_environment();
2277 items
= ordered_hashmap_new(&string_hash_ops
);
2278 globs
= ordered_hashmap_new(&string_hash_ops
);
2280 if (!items
|| !globs
) {
2287 if (optind
< argc
) {
2290 for (j
= optind
; j
< argc
; j
++) {
2291 k
= read_config_file(argv
[j
], false);
2292 if (k
< 0 && r
== 0)
2297 _cleanup_strv_free_
char **files
= NULL
;
2300 r
= conf_files_list_nulstr(&files
, ".conf", arg_root
, conf_file_dirs
);
2302 log_error_errno(r
, "Failed to enumerate tmpfiles.d files: %m");
2306 STRV_FOREACH(f
, files
) {
2307 k
= read_config_file(*f
, true);
2308 if (k
< 0 && r
== 0)
2313 /* The non-globbing ones usually create things, hence we apply
2315 ORDERED_HASHMAP_FOREACH(a
, items
, iterator
) {
2316 k
= process_item_array(a
);
2317 if (k
< 0 && r
== 0)
2321 /* The globbing ones usually alter things, hence we apply them
2323 ORDERED_HASHMAP_FOREACH(a
, globs
, iterator
) {
2324 k
= process_item_array(a
);
2325 if (k
< 0 && r
== 0)
2330 while ((a
= ordered_hashmap_steal_first(items
)))
2333 while ((a
= ordered_hashmap_steal_first(globs
)))
2336 ordered_hashmap_free(items
);
2337 ordered_hashmap_free(globs
);
2339 free(arg_include_prefixes
);
2340 free(arg_exclude_prefixes
);
2343 set_free_free(unix_sockets
);
2345 mac_selinux_finish();
2347 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;