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 return log_error_errno(errno
, "Adjusting owner and mode for %s failed: %m", path
);
623 if (fstatat(fd
, "", &st
, AT_EMPTY_PATH
) < 0)
624 return log_error_errno(errno
, "Failed to fstat() file %s: %m", path
);
626 if (S_ISLNK(st
.st_mode
))
627 log_debug("Skipping mode an owner fix for symlink %s.", path
);
629 char fn
[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
630 xsprintf(fn
, "/proc/self/fd/%i", fd
);
632 /* not using i->path directly because it may be a glob */
637 if (!(st
.st_mode
& 0111))
639 if (!(st
.st_mode
& 0222))
641 if (!(st
.st_mode
& 0444))
643 if (!S_ISDIR(st
.st_mode
))
644 m
&= ~07000; /* remove sticky/sgid/suid bit, unless directory */
647 if (m
== (st
.st_mode
& 07777))
648 log_debug("\"%s\" has right mode %o", path
, st
.st_mode
);
650 log_debug("chmod \"%s\" to mode %o", path
, m
);
651 if (chmod(fn
, m
) < 0)
652 return log_error_errno(errno
, "chmod() of %s via %s failed: %m", path
, fn
);
656 if ((i
->uid
!= st
.st_uid
|| i
->gid
!= st
.st_gid
) &&
657 (i
->uid_set
|| i
->gid_set
)) {
658 log_debug("chown \"%s\" to "UID_FMT
"."GID_FMT
,
660 i
->uid_set
? i
->uid
: UID_INVALID
,
661 i
->gid_set
? i
->gid
: GID_INVALID
);
663 i
->uid_set
? i
->uid
: UID_INVALID
,
664 i
->gid_set
? i
->gid
: GID_INVALID
) < 0)
665 return log_error_errno(errno
, "chown() of %s via %s failed: %m", path
, fn
);
671 return label_fix(path
, false, false);
674 static int parse_xattrs_from_arg(Item
*i
) {
684 _cleanup_free_
char *name
= NULL
, *value
= NULL
, *xattr
= NULL
, *xattr_replaced
= NULL
;
686 r
= extract_first_word(&p
, &xattr
, NULL
, EXTRACT_QUOTES
|EXTRACT_CUNESCAPE
);
688 log_warning_errno(r
, "Failed to parse extended attribute '%s', ignoring: %m", p
);
692 r
= specifier_printf(xattr
, specifier_table
, NULL
, &xattr_replaced
);
694 return log_error_errno(r
, "Failed to replace specifiers in extended attribute '%s': %m", xattr
);
696 r
= split_pair(xattr_replaced
, "=", &name
, &value
);
698 log_warning_errno(r
, "Failed to parse extended attribute, ignoring: %s", xattr
);
702 if (isempty(name
) || isempty(value
)) {
703 log_warning("Malformed extended attribute found, ignoring: %s", xattr
);
707 if (strv_push_pair(&i
->xattrs
, name
, value
) < 0)
716 static int path_set_xattrs(Item
*i
, const char *path
) {
717 char **name
, **value
;
722 STRV_FOREACH_PAIR(name
, value
, i
->xattrs
) {
726 log_debug("Setting extended attribute '%s=%s' on %s.", *name
, *value
, path
);
727 if (lsetxattr(path
, *name
, *value
, n
, 0) < 0) {
728 log_error("Setting extended attribute %s=%s on %s failed: %m", *name
, *value
, path
);
735 static int parse_acls_from_arg(Item
*item
) {
741 /* If force (= modify) is set, we will not modify the acl
742 * afterwards, so the mask can be added now if necessary. */
744 r
= parse_acl(item
->argument
, &item
->acl_access
, &item
->acl_default
, !item
->force
);
746 log_warning_errno(r
, "Failed to parse ACL \"%s\": %m. Ignoring", item
->argument
);
748 log_warning_errno(ENOSYS
, "ACLs are not supported. Ignoring");
755 static int path_set_acl(const char *path
, const char *pretty
, acl_type_t type
, acl_t acl
, bool modify
) {
756 _cleanup_(acl_free_charpp
) char *t
= NULL
;
757 _cleanup_(acl_freep
) acl_t dup
= NULL
;
760 /* Returns 0 for success, positive error if already warned,
761 * negative error otherwise. */
764 r
= acls_for_file(path
, type
, acl
, &dup
);
768 r
= calc_acl_mask_if_needed(&dup
);
776 /* the mask was already added earlier if needed */
779 r
= add_base_acls_if_needed(&dup
, path
);
783 t
= acl_to_any_text(dup
, NULL
, ',', TEXT_ABBREVIATE
);
784 log_debug("Setting %s ACL %s on %s.",
785 type
== ACL_TYPE_ACCESS
? "access" : "default",
788 r
= acl_set_file(path
, type
, dup
);
790 /* Return positive to indicate we already warned */
791 return -log_error_errno(errno
,
792 "Setting %s ACL \"%s\" on %s failed: %m",
793 type
== ACL_TYPE_ACCESS
? "access" : "default",
800 static int path_set_acls(Item
*item
, const char *path
) {
803 char fn
[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
804 _cleanup_close_
int fd
= -1;
810 fd
= open(path
, O_NOFOLLOW
|O_CLOEXEC
|O_PATH
);
812 return log_error_errno(errno
, "Adjusting ACL of %s failed: %m", path
);
814 if (fstatat(fd
, "", &st
, AT_EMPTY_PATH
) < 0)
815 return log_error_errno(errno
, "Failed to fstat() file %s: %m", path
);
817 if (S_ISLNK(st
.st_mode
)) {
818 log_debug("Skipping ACL fix for symlink %s.", path
);
822 xsprintf(fn
, "/proc/self/fd/%i", fd
);
824 if (item
->acl_access
)
825 r
= path_set_acl(fn
, path
, ACL_TYPE_ACCESS
, item
->acl_access
, item
->force
);
827 if (r
== 0 && item
->acl_default
)
828 r
= path_set_acl(fn
, path
, ACL_TYPE_DEFAULT
, item
->acl_default
, item
->force
);
831 return -r
; /* already warned */
832 else if (r
== -EOPNOTSUPP
) {
833 log_debug_errno(r
, "ACLs not supported by file system at %s", path
);
836 log_error_errno(r
, "ACL operation on \"%s\" failed: %m", path
);
841 #define ATTRIBUTES_ALL \
850 FS_JOURNAL_DATA_FL | \
857 static int parse_attribute_from_arg(Item
*item
) {
859 static const struct {
863 { 'A', FS_NOATIME_FL
}, /* do not update atime */
864 { 'S', FS_SYNC_FL
}, /* Synchronous updates */
865 { 'D', FS_DIRSYNC_FL
}, /* dirsync behaviour (directories only) */
866 { 'a', FS_APPEND_FL
}, /* writes to file may only append */
867 { 'c', FS_COMPR_FL
}, /* Compress file */
868 { 'd', FS_NODUMP_FL
}, /* do not dump file */
869 { 'e', FS_EXTENT_FL
}, /* Extents */
870 { 'i', FS_IMMUTABLE_FL
}, /* Immutable file */
871 { 'j', FS_JOURNAL_DATA_FL
}, /* Reserved for ext3 */
872 { 's', FS_SECRM_FL
}, /* Secure deletion */
873 { 'u', FS_UNRM_FL
}, /* Undelete */
874 { 't', FS_NOTAIL_FL
}, /* file tail should not be merged */
875 { 'T', FS_TOPDIR_FL
}, /* Top of directory hierarchies */
876 { 'C', FS_NOCOW_FL
}, /* Do not cow file */
885 unsigned value
= 0, mask
= 0;
895 } else if (*p
== '-') {
898 } else if (*p
== '=') {
904 if (isempty(p
) && mode
!= MODE_SET
) {
905 log_error("Setting file attribute on '%s' needs an attribute specification.", item
->path
);
909 for (; p
&& *p
; p
++) {
912 for (i
= 0; i
< ELEMENTSOF(attributes
); i
++)
913 if (*p
== attributes
[i
].character
)
916 if (i
>= ELEMENTSOF(attributes
)) {
917 log_error("Unknown file attribute '%c' on '%s'.", *p
, item
->path
);
921 v
= attributes
[i
].value
;
923 SET_FLAG(value
, v
, (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
;
1062 /* This returns the first error we run into, but nevertheless
1065 d
= opendir_nomod(path
);
1067 return errno
== ENOENT
|| errno
== ENOTDIR
? 0 : -errno
;
1069 FOREACH_DIRENT_ALL(de
, d
, r
= -errno
) {
1070 _cleanup_free_
char *p
= NULL
;
1073 if (dot_or_dot_dot(de
->d_name
))
1076 p
= strjoin(path
, "/", de
->d_name
);
1081 if (q
< 0 && q
!= -ENOENT
&& r
== 0)
1084 if (IN_SET(de
->d_type
, DT_UNKNOWN
, DT_DIR
)) {
1085 q
= item_do_children(i
, p
, action
);
1086 if (q
< 0 && r
== 0)
1094 static int glob_item(Item
*i
, action_t action
, bool recursive
) {
1095 _cleanup_globfree_ glob_t g
= {
1096 .gl_closedir
= (void (*)(void *)) closedir
,
1097 .gl_readdir
= (struct dirent
*(*)(void *)) readdir
,
1098 .gl_opendir
= (void *(*)(const char *)) opendir_nomod
,
1106 k
= glob(i
->path
, GLOB_NOSORT
|GLOB_BRACE
|GLOB_ALTDIRFUNC
, NULL
, &g
);
1107 if (k
!= 0 && k
!= GLOB_NOMATCH
)
1108 return log_error_errno(errno
?: EIO
, "glob(%s) failed: %m", i
->path
);
1110 STRV_FOREACH(fn
, g
.gl_pathv
) {
1112 if (k
< 0 && r
== 0)
1116 k
= item_do_children(i
, *fn
, action
);
1117 if (k
< 0 && r
== 0)
1130 _CREATION_MODE_INVALID
= -1
1133 static const char *creation_mode_verb_table
[_CREATION_MODE_MAX
] = {
1134 [CREATION_NORMAL
] = "Created",
1135 [CREATION_EXISTING
] = "Found existing",
1136 [CREATION_FORCE
] = "Created replacement",
1139 DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb
, CreationMode
);
1141 static int create_item(Item
*i
) {
1142 _cleanup_free_
char *resolved
= NULL
;
1146 CreationMode creation
;
1150 log_debug("Running create action for entry %c %s", (char) i
->type
, i
->path
);
1155 case IGNORE_DIRECTORY_PATH
:
1157 case RECURSIVE_REMOVE_PATH
:
1162 r
= write_one_file(i
, i
->path
);
1168 r
= specifier_printf(i
->argument
, specifier_table
, NULL
, &resolved
);
1170 return log_error_errno(r
, "Failed to substitute specifiers in copy source %s: %m", i
->argument
);
1172 log_debug("Copying tree \"%s\" to \"%s\".", resolved
, i
->path
);
1173 r
= copy_tree(resolved
, i
->path
, i
->uid_set
? i
->uid
: UID_INVALID
, i
->gid_set
? i
->gid
: GID_INVALID
, COPY_REFLINK
);
1175 if (r
== -EROFS
&& stat(i
->path
, &st
) == 0)
1182 return log_error_errno(r
, "Failed to copy files to %s: %m", i
->path
);
1184 if (stat(resolved
, &a
) < 0)
1185 return log_error_errno(errno
, "stat(%s) failed: %m", resolved
);
1187 if (stat(i
->path
, &b
) < 0)
1188 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1190 if ((a
.st_mode
^ b
.st_mode
) & S_IFMT
) {
1191 log_debug("Can't copy to %s, file exists already and is of different type", i
->path
);
1196 r
= path_set_perms(i
, i
->path
);
1203 r
= glob_item(i
, write_one_file
, false);
1209 case CREATE_DIRECTORY
:
1210 case TRUNCATE_DIRECTORY
:
1211 case CREATE_SUBVOLUME
:
1212 case CREATE_SUBVOLUME_INHERIT_QUOTA
:
1213 case CREATE_SUBVOLUME_NEW_QUOTA
:
1214 RUN_WITH_UMASK(0000)
1215 mkdir_parents_label(i
->path
, 0755);
1217 if (IN_SET(i
->type
, CREATE_SUBVOLUME
, CREATE_SUBVOLUME_INHERIT_QUOTA
, CREATE_SUBVOLUME_NEW_QUOTA
)) {
1219 if (btrfs_is_subvol(isempty(arg_root
) ? "/" : arg_root
) <= 0)
1221 /* Don't create a subvolume unless the
1222 * root directory is one, too. We do
1223 * this under the assumption that if
1224 * the root directory is just a plain
1225 * directory (i.e. very light-weight),
1226 * we shouldn't try to split it up
1227 * into subvolumes (i.e. more
1228 * heavy-weight). Thus, chroot()
1229 * environments and suchlike will get
1230 * a full brtfs subvolume set up below
1231 * their tree only if they
1232 * specifically set up a btrfs
1233 * subvolume for the root dir too. */
1237 RUN_WITH_UMASK((~i
->mode
) & 0777)
1238 r
= btrfs_subvol_make(i
->path
);
1243 if (IN_SET(i
->type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
) || r
== -ENOTTY
)
1244 RUN_WITH_UMASK(0000)
1245 r
= mkdir_label(i
->path
, i
->mode
);
1250 if (r
!= -EEXIST
&& r
!= -EROFS
)
1251 return log_error_errno(r
, "Failed to create directory or subvolume \"%s\": %m", i
->path
);
1253 k
= is_dir(i
->path
, false);
1254 if (k
== -ENOENT
&& r
== -EROFS
)
1255 return log_error_errno(r
, "%s does not exist and cannot be created as the file system is read-only.", i
->path
);
1257 return log_error_errno(k
, "Failed to check if %s exists: %m", i
->path
);
1259 log_warning("\"%s\" already exists and is not a directory.", i
->path
);
1263 creation
= CREATION_EXISTING
;
1265 creation
= CREATION_NORMAL
;
1267 log_debug("%s directory \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1269 if (IN_SET(i
->type
, CREATE_SUBVOLUME_NEW_QUOTA
, CREATE_SUBVOLUME_INHERIT_QUOTA
)) {
1270 r
= btrfs_subvol_auto_qgroup(i
->path
, 0, i
->type
== CREATE_SUBVOLUME_NEW_QUOTA
);
1272 log_debug_errno(r
, "Couldn't adjust quota for subvolume \"%s\" (unsupported fs or dir not a subvolume): %m", i
->path
);
1273 else if (r
== -EROFS
)
1274 log_debug_errno(r
, "Couldn't adjust quota for subvolume \"%s\" (fs is read-only).", i
->path
);
1275 else if (r
== -ENOPROTOOPT
)
1276 log_debug_errno(r
, "Couldn't adjust quota for subvolume \"%s\" (quota support is disabled).", i
->path
);
1278 q
= log_error_errno(r
, "Failed to adjust quota for subvolume \"%s\": %m", i
->path
);
1280 log_debug("Adjusted quota for subvolume \"%s\".", i
->path
);
1282 log_debug("Quota for subvolume \"%s\" already in place, no change made.", i
->path
);
1287 case EMPTY_DIRECTORY
:
1288 r
= path_set_perms(i
, i
->path
);
1297 RUN_WITH_UMASK(0000) {
1298 mac_selinux_create_file_prepare(i
->path
, S_IFIFO
);
1299 r
= mkfifo(i
->path
, i
->mode
);
1300 mac_selinux_create_file_clear();
1304 if (errno
!= EEXIST
)
1305 return log_error_errno(errno
, "Failed to create fifo %s: %m", i
->path
);
1307 if (lstat(i
->path
, &st
) < 0)
1308 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1310 if (!S_ISFIFO(st
.st_mode
)) {
1313 RUN_WITH_UMASK(0000) {
1314 mac_selinux_create_file_prepare(i
->path
, S_IFIFO
);
1315 r
= mkfifo_atomic(i
->path
, i
->mode
);
1316 mac_selinux_create_file_clear();
1320 return log_error_errno(r
, "Failed to create fifo %s: %m", i
->path
);
1321 creation
= CREATION_FORCE
;
1323 log_warning("\"%s\" already exists and is not a fifo.", i
->path
);
1327 creation
= CREATION_EXISTING
;
1329 creation
= CREATION_NORMAL
;
1330 log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1332 r
= path_set_perms(i
, i
->path
);
1339 case CREATE_SYMLINK
: {
1340 r
= specifier_printf(i
->argument
, specifier_table
, NULL
, &resolved
);
1342 return log_error_errno(r
, "Failed to substitute specifiers in symlink target %s: %m", i
->argument
);
1344 mac_selinux_create_file_prepare(i
->path
, S_IFLNK
);
1345 r
= symlink(resolved
, i
->path
);
1346 mac_selinux_create_file_clear();
1349 _cleanup_free_
char *x
= NULL
;
1351 if (errno
!= EEXIST
)
1352 return log_error_errno(errno
, "symlink(%s, %s) failed: %m", resolved
, i
->path
);
1354 r
= readlink_malloc(i
->path
, &x
);
1355 if (r
< 0 || !streq(resolved
, x
)) {
1358 mac_selinux_create_file_prepare(i
->path
, S_IFLNK
);
1359 r
= symlink_atomic(resolved
, i
->path
);
1360 mac_selinux_create_file_clear();
1363 return log_error_errno(r
, "symlink(%s, %s) failed: %m", resolved
, i
->path
);
1365 creation
= CREATION_FORCE
;
1367 log_debug("\"%s\" is not a symlink or does not point to the correct path.", i
->path
);
1371 creation
= CREATION_EXISTING
;
1374 creation
= CREATION_NORMAL
;
1375 log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1379 case CREATE_BLOCK_DEVICE
:
1380 case CREATE_CHAR_DEVICE
: {
1383 if (have_effective_cap(CAP_MKNOD
) == 0) {
1384 /* In a container we lack CAP_MKNOD. We
1385 shouldn't attempt to create the device node in
1386 that case to avoid noise, and we don't support
1387 virtualized devices in containers anyway. */
1389 log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i
->path
);
1393 file_type
= i
->type
== CREATE_BLOCK_DEVICE
? S_IFBLK
: S_IFCHR
;
1395 RUN_WITH_UMASK(0000) {
1396 mac_selinux_create_file_prepare(i
->path
, file_type
);
1397 r
= mknod(i
->path
, i
->mode
| file_type
, i
->major_minor
);
1398 mac_selinux_create_file_clear();
1402 if (errno
== EPERM
) {
1403 log_debug("We lack permissions, possibly because of cgroup configuration; "
1404 "skipping creation of device node %s.", i
->path
);
1408 if (errno
!= EEXIST
)
1409 return log_error_errno(errno
, "Failed to create device node %s: %m", i
->path
);
1411 if (lstat(i
->path
, &st
) < 0)
1412 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1414 if ((st
.st_mode
& S_IFMT
) != file_type
) {
1418 RUN_WITH_UMASK(0000) {
1419 mac_selinux_create_file_prepare(i
->path
, file_type
);
1420 r
= mknod_atomic(i
->path
, i
->mode
| file_type
, i
->major_minor
);
1421 mac_selinux_create_file_clear();
1425 return log_error_errno(r
, "Failed to create device node \"%s\": %m", i
->path
);
1426 creation
= CREATION_FORCE
;
1428 log_debug("%s is not a device node.", i
->path
);
1432 creation
= CREATION_EXISTING
;
1434 creation
= CREATION_NORMAL
;
1436 log_debug("%s %s device node \"%s\" %u:%u.",
1437 creation_mode_verb_to_string(creation
),
1438 i
->type
== CREATE_BLOCK_DEVICE
? "block" : "char",
1439 i
->path
, major(i
->mode
), minor(i
->mode
));
1441 r
= path_set_perms(i
, i
->path
);
1450 r
= glob_item(i
, path_set_perms
, false);
1455 case RECURSIVE_RELABEL_PATH
:
1456 r
= glob_item(i
, path_set_perms
, true);
1462 r
= glob_item(i
, path_set_xattrs
, false);
1467 case RECURSIVE_SET_XATTR
:
1468 r
= glob_item(i
, path_set_xattrs
, true);
1474 r
= glob_item(i
, path_set_acls
, false);
1479 case RECURSIVE_SET_ACL
:
1480 r
= glob_item(i
, path_set_acls
, true);
1486 r
= glob_item(i
, path_set_attribute
, false);
1491 case RECURSIVE_SET_ATTRIBUTE
:
1492 r
= glob_item(i
, path_set_attribute
, true);
1501 static int remove_item_instance(Item
*i
, const char *instance
) {
1509 if (remove(instance
) < 0 && errno
!= ENOENT
)
1510 return log_error_errno(errno
, "rm(%s): %m", instance
);
1514 case TRUNCATE_DIRECTORY
:
1515 case RECURSIVE_REMOVE_PATH
:
1516 /* FIXME: we probably should use dir_cleanup() here
1517 * instead of rm_rf() so that 'x' is honoured. */
1518 log_debug("rm -rf \"%s\"", instance
);
1519 r
= rm_rf(instance
, (i
->type
== RECURSIVE_REMOVE_PATH
? REMOVE_ROOT
|REMOVE_SUBVOLUME
: 0) | REMOVE_PHYSICAL
);
1520 if (r
< 0 && r
!= -ENOENT
)
1521 return log_error_errno(r
, "rm_rf(%s): %m", instance
);
1526 assert_not_reached("wut?");
1532 static int remove_item(Item
*i
) {
1535 log_debug("Running remove action for entry %c %s", (char) i
->type
, i
->path
);
1540 case TRUNCATE_DIRECTORY
:
1541 case RECURSIVE_REMOVE_PATH
:
1542 return glob_item(i
, remove_item_instance
, false);
1549 static int clean_item_instance(Item
*i
, const char* instance
) {
1550 _cleanup_closedir_
DIR *d
= NULL
;
1554 char timestamp
[FORMAT_TIMESTAMP_MAX
];
1561 n
= now(CLOCK_REALTIME
);
1565 cutoff
= n
- i
->age
;
1567 d
= opendir_nomod(instance
);
1569 if (IN_SET(errno
, ENOENT
, ENOTDIR
)) {
1570 log_debug_errno(errno
, "Directory \"%s\": %m", instance
);
1574 return log_error_errno(errno
, "Failed to open directory %s: %m", instance
);
1577 if (fstat(dirfd(d
), &s
) < 0)
1578 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1580 if (!S_ISDIR(s
.st_mode
)) {
1581 log_error("%s is not a directory.", i
->path
);
1585 if (fstatat(dirfd(d
), "..", &ps
, AT_SYMLINK_NOFOLLOW
) != 0)
1586 return log_error_errno(errno
, "stat(%s/..) failed: %m", i
->path
);
1588 mountpoint
= s
.st_dev
!= ps
.st_dev
|| s
.st_ino
== ps
.st_ino
;
1590 log_debug("Cleanup threshold for %s \"%s\" is %s",
1591 mountpoint
? "mount point" : "directory",
1593 format_timestamp_us(timestamp
, sizeof(timestamp
), cutoff
));
1595 return dir_cleanup(i
, instance
, d
, &s
, cutoff
, s
.st_dev
, mountpoint
,
1596 MAX_DEPTH
, i
->keep_first_level
);
1599 static int clean_item(Item
*i
) {
1602 log_debug("Running clean action for entry %c %s", (char) i
->type
, i
->path
);
1605 case CREATE_DIRECTORY
:
1606 case CREATE_SUBVOLUME
:
1607 case CREATE_SUBVOLUME_INHERIT_QUOTA
:
1608 case CREATE_SUBVOLUME_NEW_QUOTA
:
1609 case EMPTY_DIRECTORY
:
1610 case TRUNCATE_DIRECTORY
:
1613 clean_item_instance(i
, i
->path
);
1615 case IGNORE_DIRECTORY_PATH
:
1616 return glob_item(i
, clean_item_instance
, false);
1622 static int process_item_array(ItemArray
*array
);
1624 static int process_item(Item
*i
) {
1626 _cleanup_free_
char *prefix
= NULL
;
1635 prefix
= malloc(strlen(i
->path
) + 1);
1639 PATH_FOREACH_PREFIX(prefix
, i
->path
) {
1642 j
= ordered_hashmap_get(items
, prefix
);
1646 s
= process_item_array(j
);
1647 if (s
< 0 && t
== 0)
1652 r
= arg_create
? create_item(i
) : 0;
1653 q
= arg_remove
? remove_item(i
) : 0;
1654 p
= arg_clean
? clean_item(i
) : 0;
1662 static int process_item_array(ItemArray
*array
) {
1668 for (n
= 0; n
< array
->count
; n
++) {
1669 k
= process_item(array
->items
+ n
);
1670 if (k
< 0 && r
== 0)
1677 static void item_free_contents(Item
*i
) {
1681 strv_free(i
->xattrs
);
1684 acl_free(i
->acl_access
);
1685 acl_free(i
->acl_default
);
1689 static void item_array_free(ItemArray
*a
) {
1695 for (n
= 0; n
< a
->count
; n
++)
1696 item_free_contents(a
->items
+ n
);
1701 static int item_compare(const void *a
, const void *b
) {
1702 const Item
*x
= a
, *y
= b
;
1704 /* Make sure that the ownership taking item is put first, so
1705 * that we first create the node, and then can adjust it */
1707 if (takes_ownership(x
->type
) && !takes_ownership(y
->type
))
1709 if (!takes_ownership(x
->type
) && takes_ownership(y
->type
))
1712 return (int) x
->type
- (int) y
->type
;
1715 static bool item_compatible(Item
*a
, Item
*b
) {
1718 assert(streq(a
->path
, b
->path
));
1720 if (takes_ownership(a
->type
) && takes_ownership(b
->type
))
1721 /* check if the items are the same */
1722 return streq_ptr(a
->argument
, b
->argument
) &&
1724 a
->uid_set
== b
->uid_set
&&
1727 a
->gid_set
== b
->gid_set
&&
1730 a
->mode_set
== b
->mode_set
&&
1731 a
->mode
== b
->mode
&&
1733 a
->age_set
== b
->age_set
&&
1736 a
->mask_perms
== b
->mask_perms
&&
1738 a
->keep_first_level
== b
->keep_first_level
&&
1740 a
->major_minor
== b
->major_minor
;
1745 static bool should_include_path(const char *path
) {
1748 STRV_FOREACH(prefix
, arg_exclude_prefixes
)
1749 if (path_startswith(path
, *prefix
)) {
1750 log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.",
1755 STRV_FOREACH(prefix
, arg_include_prefixes
)
1756 if (path_startswith(path
, *prefix
)) {
1757 log_debug("Entry \"%s\" matches include prefix \"%s\".", path
, *prefix
);
1761 /* no matches, so we should include this path only if we
1762 * have no whitelist at all */
1763 if (strv_length(arg_include_prefixes
) == 0)
1766 log_debug("Entry \"%s\" does not match any include prefix, skipping.", path
);
1770 static int parse_line(const char *fname
, unsigned line
, const char *buffer
) {
1772 _cleanup_free_
char *action
= NULL
, *mode
= NULL
, *user
= NULL
, *group
= NULL
, *age
= NULL
, *path
= NULL
;
1773 _cleanup_(item_free_contents
) Item i
= {};
1774 ItemArray
*existing
;
1777 bool force
= false, boot
= false;
1783 r
= extract_many_words(
1795 return log_error_errno(r
, "[%s:%u] Failed to parse line: %m", fname
, line
);
1797 log_error("[%s:%u] Syntax error.", fname
, line
);
1801 if (!isempty(buffer
) && !streq(buffer
, "-")) {
1802 i
.argument
= strdup(buffer
);
1807 if (isempty(action
)) {
1808 log_error("[%s:%u] Command too short '%s'.", fname
, line
, action
);
1812 for (pos
= 1; action
[pos
]; pos
++) {
1813 if (action
[pos
] == '!' && !boot
)
1815 else if (action
[pos
] == '+' && !force
)
1818 log_error("[%s:%u] Unknown modifiers in command '%s'",
1819 fname
, line
, action
);
1824 if (boot
&& !arg_boot
) {
1825 log_debug("Ignoring entry %s \"%s\" because --boot is not specified.",
1833 r
= specifier_printf(path
, specifier_table
, NULL
, &i
.path
);
1835 log_error("[%s:%u] Failed to replace specifiers: %s", fname
, line
, path
);
1841 case CREATE_DIRECTORY
:
1842 case CREATE_SUBVOLUME
:
1843 case CREATE_SUBVOLUME_INHERIT_QUOTA
:
1844 case CREATE_SUBVOLUME_NEW_QUOTA
:
1845 case EMPTY_DIRECTORY
:
1846 case TRUNCATE_DIRECTORY
:
1849 case IGNORE_DIRECTORY_PATH
:
1851 case RECURSIVE_REMOVE_PATH
:
1854 case RECURSIVE_RELABEL_PATH
:
1856 log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname
, line
, i
.type
);
1864 case CREATE_SYMLINK
:
1866 i
.argument
= strappend("/usr/share/factory/", i
.path
);
1874 log_error("[%s:%u] Write file requires argument.", fname
, line
);
1881 i
.argument
= strappend("/usr/share/factory/", i
.path
);
1884 } else if (!path_is_absolute(i
.argument
)) {
1885 log_error("[%s:%u] Source path is not absolute.", fname
, line
);
1889 path_kill_slashes(i
.argument
);
1892 case CREATE_CHAR_DEVICE
:
1893 case CREATE_BLOCK_DEVICE
: {
1894 unsigned major
, minor
;
1897 log_error("[%s:%u] Device file requires argument.", fname
, line
);
1901 if (sscanf(i
.argument
, "%u:%u", &major
, &minor
) != 2) {
1902 log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname
, line
, i
.argument
);
1906 i
.major_minor
= makedev(major
, minor
);
1911 case RECURSIVE_SET_XATTR
:
1913 log_error("[%s:%u] Set extended attribute requires argument.", fname
, line
);
1916 r
= parse_xattrs_from_arg(&i
);
1922 case RECURSIVE_SET_ACL
:
1924 log_error("[%s:%u] Set ACLs requires argument.", fname
, line
);
1927 r
= parse_acls_from_arg(&i
);
1933 case RECURSIVE_SET_ATTRIBUTE
:
1935 log_error("[%s:%u] Set file attribute requires argument.", fname
, line
);
1938 r
= parse_attribute_from_arg(&i
);
1944 log_error("[%s:%u] Unknown command type '%c'.", fname
, line
, (char) i
.type
);
1948 if (!path_is_absolute(i
.path
)) {
1949 log_error("[%s:%u] Path '%s' not absolute.", fname
, line
, i
.path
);
1953 path_kill_slashes(i
.path
);
1955 if (!should_include_path(i
.path
))
1961 p
= prefix_root(arg_root
, i
.path
);
1969 if (!isempty(user
) && !streq(user
, "-")) {
1970 const char *u
= user
;
1972 r
= get_user_creds(&u
, &i
.uid
, NULL
, NULL
, NULL
);
1974 log_error("[%s:%u] Unknown user '%s'.", fname
, line
, user
);
1981 if (!isempty(group
) && !streq(group
, "-")) {
1982 const char *g
= group
;
1984 r
= get_group_creds(&g
, &i
.gid
);
1986 log_error("[%s:%u] Unknown group '%s'.", fname
, line
, group
);
1993 if (!isempty(mode
) && !streq(mode
, "-")) {
1994 const char *mm
= mode
;
1998 i
.mask_perms
= true;
2002 if (parse_mode(mm
, &m
) < 0) {
2003 log_error("[%s:%u] Invalid mode '%s'.", fname
, line
, mode
);
2010 i
.mode
= IN_SET(i
.type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
, CREATE_SUBVOLUME
, CREATE_SUBVOLUME_INHERIT_QUOTA
, CREATE_SUBVOLUME_NEW_QUOTA
) ? 0755 : 0644;
2012 if (!isempty(age
) && !streq(age
, "-")) {
2013 const char *a
= age
;
2016 i
.keep_first_level
= true;
2020 if (parse_sec(a
, &i
.age
) < 0) {
2021 log_error("[%s:%u] Invalid age '%s'.", fname
, line
, age
);
2028 h
= needs_glob(i
.type
) ? globs
: items
;
2030 existing
= ordered_hashmap_get(h
, i
.path
);
2034 for (n
= 0; n
< existing
->count
; n
++) {
2035 if (!item_compatible(existing
->items
+ n
, &i
)) {
2036 log_warning("[%s:%u] Duplicate line for path \"%s\", ignoring.",
2037 fname
, line
, i
.path
);
2042 existing
= new0(ItemArray
, 1);
2043 r
= ordered_hashmap_put(h
, i
.path
, existing
);
2048 if (!GREEDY_REALLOC(existing
->items
, existing
->size
, existing
->count
+ 1))
2051 memcpy(existing
->items
+ existing
->count
++, &i
, sizeof(i
));
2053 /* Sort item array, to enforce stable ordering of application */
2054 qsort_safe(existing
->items
, existing
->count
, sizeof(Item
), item_compare
);
2060 static void help(void) {
2061 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
2062 "Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
2063 " -h --help Show this help\n"
2064 " --version Show package version\n"
2065 " --create Create marked files/directories\n"
2066 " --clean Clean up marked directories\n"
2067 " --remove Remove marked files/directories\n"
2068 " --boot Execute actions only safe at boot\n"
2069 " --prefix=PATH Only apply rules with the specified prefix\n"
2070 " --exclude-prefix=PATH Ignore rules with the specified prefix\n"
2071 " --root=PATH Operate on an alternate filesystem root\n",
2072 program_invocation_short_name
);
2075 static int parse_argv(int argc
, char *argv
[]) {
2078 ARG_VERSION
= 0x100,
2088 static const struct option options
[] = {
2089 { "help", no_argument
, NULL
, 'h' },
2090 { "version", no_argument
, NULL
, ARG_VERSION
},
2091 { "create", no_argument
, NULL
, ARG_CREATE
},
2092 { "clean", no_argument
, NULL
, ARG_CLEAN
},
2093 { "remove", no_argument
, NULL
, ARG_REMOVE
},
2094 { "boot", no_argument
, NULL
, ARG_BOOT
},
2095 { "prefix", required_argument
, NULL
, ARG_PREFIX
},
2096 { "exclude-prefix", required_argument
, NULL
, ARG_EXCLUDE_PREFIX
},
2097 { "root", required_argument
, NULL
, ARG_ROOT
},
2106 while ((c
= getopt_long(argc
, argv
, "h", options
, NULL
)) >= 0)
2134 if (strv_push(&arg_include_prefixes
, optarg
) < 0)
2138 case ARG_EXCLUDE_PREFIX
:
2139 if (strv_push(&arg_exclude_prefixes
, optarg
) < 0)
2144 r
= parse_path_argument_and_warn(optarg
, true, &arg_root
);
2153 assert_not_reached("Unhandled option");
2156 if (!arg_clean
&& !arg_create
&& !arg_remove
) {
2157 log_error("You need to specify at least one of --clean, --create or --remove.");
2164 static int read_config_file(const char *fn
, bool ignore_enoent
) {
2165 _cleanup_fclose_
FILE *_f
= NULL
;
2167 char line
[LINE_MAX
];
2175 if (streq(fn
, "-")) {
2176 log_debug("Reading config from stdin.");
2180 r
= search_and_fopen_nulstr(fn
, "re", arg_root
, conf_file_dirs
, &_f
);
2182 if (ignore_enoent
&& r
== -ENOENT
) {
2183 log_debug_errno(r
, "Failed to open \"%s\", ignoring: %m", fn
);
2187 return log_error_errno(r
, "Failed to open '%s': %m", fn
);
2189 log_debug("Reading config file \"%s\".", fn
);
2193 FOREACH_LINE(line
, f
, break) {
2200 if (*l
== '#' || *l
== 0)
2203 k
= parse_line(fn
, v
, l
);
2204 if (k
< 0 && r
== 0)
2208 /* we have to determine age parameter for each entry of type X */
2209 ORDERED_HASHMAP_FOREACH(i
, globs
, iterator
) {
2211 Item
*j
, *candidate_item
= NULL
;
2213 if (i
->type
!= IGNORE_DIRECTORY_PATH
)
2216 ORDERED_HASHMAP_FOREACH(j
, items
, iter
) {
2217 if (!IN_SET(j
->type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
, CREATE_SUBVOLUME
, CREATE_SUBVOLUME_INHERIT_QUOTA
, CREATE_SUBVOLUME_NEW_QUOTA
))
2220 if (path_equal(j
->path
, i
->path
)) {
2225 if ((!candidate_item
&& path_startswith(i
->path
, j
->path
)) ||
2226 (candidate_item
&& path_startswith(j
->path
, candidate_item
->path
) && (fnmatch(i
->path
, j
->path
, FNM_PATHNAME
| FNM_PERIOD
) == 0)))
2230 if (candidate_item
&& candidate_item
->age_set
) {
2231 i
->age
= candidate_item
->age
;
2237 log_error_errno(errno
, "Failed to read from file %s: %m", fn
);
2245 int main(int argc
, char *argv
[]) {
2250 r
= parse_argv(argc
, argv
);
2254 log_set_target(LOG_TARGET_AUTO
);
2255 log_parse_environment();
2262 items
= ordered_hashmap_new(&string_hash_ops
);
2263 globs
= ordered_hashmap_new(&string_hash_ops
);
2265 if (!items
|| !globs
) {
2272 if (optind
< argc
) {
2275 for (j
= optind
; j
< argc
; j
++) {
2276 k
= read_config_file(argv
[j
], false);
2277 if (k
< 0 && r
== 0)
2282 _cleanup_strv_free_
char **files
= NULL
;
2285 r
= conf_files_list_nulstr(&files
, ".conf", arg_root
, conf_file_dirs
);
2287 log_error_errno(r
, "Failed to enumerate tmpfiles.d files: %m");
2291 STRV_FOREACH(f
, files
) {
2292 k
= read_config_file(*f
, true);
2293 if (k
< 0 && r
== 0)
2298 /* The non-globbing ones usually create things, hence we apply
2300 ORDERED_HASHMAP_FOREACH(a
, items
, iterator
) {
2301 k
= process_item_array(a
);
2302 if (k
< 0 && r
== 0)
2306 /* The globbing ones usually alter things, hence we apply them
2308 ORDERED_HASHMAP_FOREACH(a
, globs
, iterator
) {
2309 k
= process_item_array(a
);
2310 if (k
< 0 && r
== 0)
2315 while ((a
= ordered_hashmap_steal_first(items
)))
2318 while ((a
= ordered_hashmap_steal_first(globs
)))
2321 ordered_hashmap_free(items
);
2322 ordered_hashmap_free(globs
);
2324 free(arg_include_prefixes
);
2325 free(arg_exclude_prefixes
);
2328 set_free_free(unix_sockets
);
2330 mac_selinux_finish();
2332 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;