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 */
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 while ((dent
= readdir(d
))) {
386 _cleanup_free_
char *sub_path
= NULL
;
388 if (STR_IN_SET(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
, NULL
);
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(%s) failed: %m", path
);
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(%s) failed: %m", path
);
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
;
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
:
1223 RUN_WITH_UMASK(0000)
1224 mkdir_parents_label(i
->path
, 0755);
1226 if (IN_SET(i
->type
, CREATE_SUBVOLUME
, CREATE_SUBVOLUME_INHERIT_QUOTA
, CREATE_SUBVOLUME_NEW_QUOTA
)) {
1228 if (btrfs_is_subvol(isempty(arg_root
) ? "/" : arg_root
) <= 0)
1230 /* Don't create a subvolume unless the
1231 * root directory is one, too. We do
1232 * this under the assumption that if
1233 * the root directory is just a plain
1234 * directory (i.e. very light-weight),
1235 * we shouldn't try to split it up
1236 * into subvolumes (i.e. more
1237 * heavy-weight). Thus, chroot()
1238 * environments and suchlike will get
1239 * a full brtfs subvolume set up below
1240 * their tree only if they
1241 * specifically set up a btrfs
1242 * subvolume for the root dir too. */
1246 RUN_WITH_UMASK((~i
->mode
) & 0777)
1247 r
= btrfs_subvol_make(i
->path
);
1252 if (IN_SET(i
->type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
) || r
== -ENOTTY
)
1253 RUN_WITH_UMASK(0000)
1254 r
= mkdir_label(i
->path
, i
->mode
);
1259 if (r
!= -EEXIST
&& r
!= -EROFS
)
1260 return log_error_errno(r
, "Failed to create directory or subvolume \"%s\": %m", i
->path
);
1262 k
= is_dir(i
->path
, false);
1263 if (k
== -ENOENT
&& r
== -EROFS
)
1264 return log_error_errno(r
, "%s does not exist and cannot be created as the file system is read-only.", i
->path
);
1266 return log_error_errno(k
, "Failed to check if %s exists: %m", i
->path
);
1268 log_warning("\"%s\" already exists and is not a directory.", i
->path
);
1272 creation
= CREATION_EXISTING
;
1274 creation
= CREATION_NORMAL
;
1276 log_debug("%s directory \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1278 if (IN_SET(i
->type
, CREATE_SUBVOLUME_NEW_QUOTA
, CREATE_SUBVOLUME_INHERIT_QUOTA
)) {
1279 r
= btrfs_subvol_auto_qgroup(i
->path
, 0, i
->type
== CREATE_SUBVOLUME_NEW_QUOTA
);
1281 log_debug_errno(r
, "Couldn't adjust quota for subvolume \"%s\" (unsupported fs or dir not a subvolume): %m", i
->path
);
1282 else if (r
== -EROFS
)
1283 log_debug_errno(r
, "Couldn't adjust quota for subvolume \"%s\" (fs is read-only).", i
->path
);
1284 else if (r
== -ENOPROTOOPT
)
1285 log_debug_errno(r
, "Couldn't adjust quota for subvolume \"%s\" (quota support is disabled).", i
->path
);
1287 q
= log_error_errno(r
, "Failed to adjust quota for subvolume \"%s\": %m", i
->path
);
1289 log_debug("Adjusted quota for subvolume \"%s\".", i
->path
);
1291 log_debug("Quota for subvolume \"%s\" already in place, no change made.", i
->path
);
1296 case EMPTY_DIRECTORY
:
1297 r
= path_set_perms(i
, i
->path
);
1306 RUN_WITH_UMASK(0000) {
1307 mac_selinux_create_file_prepare(i
->path
, S_IFIFO
);
1308 r
= mkfifo(i
->path
, i
->mode
);
1309 mac_selinux_create_file_clear();
1313 if (errno
!= EEXIST
)
1314 return log_error_errno(errno
, "Failed to create fifo %s: %m", i
->path
);
1316 if (lstat(i
->path
, &st
) < 0)
1317 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1319 if (!S_ISFIFO(st
.st_mode
)) {
1322 RUN_WITH_UMASK(0000) {
1323 mac_selinux_create_file_prepare(i
->path
, S_IFIFO
);
1324 r
= mkfifo_atomic(i
->path
, i
->mode
);
1325 mac_selinux_create_file_clear();
1329 return log_error_errno(r
, "Failed to create fifo %s: %m", i
->path
);
1330 creation
= CREATION_FORCE
;
1332 log_warning("\"%s\" already exists and is not a fifo.", i
->path
);
1336 creation
= CREATION_EXISTING
;
1338 creation
= CREATION_NORMAL
;
1339 log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1341 r
= path_set_perms(i
, i
->path
);
1348 case CREATE_SYMLINK
: {
1349 r
= specifier_printf(i
->argument
, specifier_table
, NULL
, &resolved
);
1351 return log_error_errno(r
, "Failed to substitute specifiers in symlink target %s: %m", i
->argument
);
1353 mac_selinux_create_file_prepare(i
->path
, S_IFLNK
);
1354 r
= symlink(resolved
, i
->path
);
1355 mac_selinux_create_file_clear();
1358 _cleanup_free_
char *x
= NULL
;
1360 if (errno
!= EEXIST
)
1361 return log_error_errno(errno
, "symlink(%s, %s) failed: %m", resolved
, i
->path
);
1363 r
= readlink_malloc(i
->path
, &x
);
1364 if (r
< 0 || !streq(resolved
, x
)) {
1367 mac_selinux_create_file_prepare(i
->path
, S_IFLNK
);
1368 r
= symlink_atomic(resolved
, i
->path
);
1369 mac_selinux_create_file_clear();
1372 return log_error_errno(r
, "symlink(%s, %s) failed: %m", resolved
, i
->path
);
1374 creation
= CREATION_FORCE
;
1376 log_debug("\"%s\" is not a symlink or does not point to the correct path.", i
->path
);
1380 creation
= CREATION_EXISTING
;
1383 creation
= CREATION_NORMAL
;
1384 log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1388 case CREATE_BLOCK_DEVICE
:
1389 case CREATE_CHAR_DEVICE
: {
1392 if (have_effective_cap(CAP_MKNOD
) == 0) {
1393 /* In a container we lack CAP_MKNOD. We
1394 shouldn't attempt to create the device node in
1395 that case to avoid noise, and we don't support
1396 virtualized devices in containers anyway. */
1398 log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i
->path
);
1402 file_type
= i
->type
== CREATE_BLOCK_DEVICE
? S_IFBLK
: S_IFCHR
;
1404 RUN_WITH_UMASK(0000) {
1405 mac_selinux_create_file_prepare(i
->path
, file_type
);
1406 r
= mknod(i
->path
, i
->mode
| file_type
, i
->major_minor
);
1407 mac_selinux_create_file_clear();
1411 if (errno
== EPERM
) {
1412 log_debug("We lack permissions, possibly because of cgroup configuration; "
1413 "skipping creation of device node %s.", i
->path
);
1417 if (errno
!= EEXIST
)
1418 return log_error_errno(errno
, "Failed to create device node %s: %m", i
->path
);
1420 if (lstat(i
->path
, &st
) < 0)
1421 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1423 if ((st
.st_mode
& S_IFMT
) != file_type
) {
1427 RUN_WITH_UMASK(0000) {
1428 mac_selinux_create_file_prepare(i
->path
, file_type
);
1429 r
= mknod_atomic(i
->path
, i
->mode
| file_type
, i
->major_minor
);
1430 mac_selinux_create_file_clear();
1434 return log_error_errno(r
, "Failed to create device node \"%s\": %m", i
->path
);
1435 creation
= CREATION_FORCE
;
1437 log_debug("%s is not a device node.", i
->path
);
1441 creation
= CREATION_EXISTING
;
1443 creation
= CREATION_NORMAL
;
1445 log_debug("%s %s device node \"%s\" %u:%u.",
1446 creation_mode_verb_to_string(creation
),
1447 i
->type
== CREATE_BLOCK_DEVICE
? "block" : "char",
1448 i
->path
, major(i
->mode
), minor(i
->mode
));
1450 r
= path_set_perms(i
, i
->path
);
1459 r
= glob_item(i
, path_set_perms
, false);
1464 case RECURSIVE_RELABEL_PATH
:
1465 r
= glob_item(i
, path_set_perms
, true);
1471 r
= glob_item(i
, path_set_xattrs
, false);
1476 case RECURSIVE_SET_XATTR
:
1477 r
= glob_item(i
, path_set_xattrs
, true);
1483 r
= glob_item(i
, path_set_acls
, false);
1488 case RECURSIVE_SET_ACL
:
1489 r
= glob_item(i
, path_set_acls
, true);
1495 r
= glob_item(i
, path_set_attribute
, false);
1500 case RECURSIVE_SET_ATTRIBUTE
:
1501 r
= glob_item(i
, path_set_attribute
, true);
1510 static int remove_item_instance(Item
*i
, const char *instance
) {
1518 if (remove(instance
) < 0 && errno
!= ENOENT
)
1519 return log_error_errno(errno
, "rm(%s): %m", instance
);
1523 case TRUNCATE_DIRECTORY
:
1524 case RECURSIVE_REMOVE_PATH
:
1525 /* FIXME: we probably should use dir_cleanup() here
1526 * instead of rm_rf() so that 'x' is honoured. */
1527 log_debug("rm -rf \"%s\"", instance
);
1528 r
= rm_rf(instance
, (i
->type
== RECURSIVE_REMOVE_PATH
? REMOVE_ROOT
|REMOVE_SUBVOLUME
: 0) | REMOVE_PHYSICAL
);
1529 if (r
< 0 && r
!= -ENOENT
)
1530 return log_error_errno(r
, "rm_rf(%s): %m", instance
);
1535 assert_not_reached("wut?");
1541 static int remove_item(Item
*i
) {
1544 log_debug("Running remove action for entry %c %s", (char) i
->type
, i
->path
);
1549 case TRUNCATE_DIRECTORY
:
1550 case RECURSIVE_REMOVE_PATH
:
1551 return glob_item(i
, remove_item_instance
, false);
1558 static int clean_item_instance(Item
*i
, const char* instance
) {
1559 _cleanup_closedir_
DIR *d
= NULL
;
1563 char timestamp
[FORMAT_TIMESTAMP_MAX
];
1570 n
= now(CLOCK_REALTIME
);
1574 cutoff
= n
- i
->age
;
1576 d
= opendir_nomod(instance
);
1578 if (errno
== ENOENT
|| errno
== ENOTDIR
) {
1579 log_debug_errno(errno
, "Directory \"%s\": %m", instance
);
1583 log_error_errno(errno
, "Failed to open directory %s: %m", instance
);
1587 if (fstat(dirfd(d
), &s
) < 0)
1588 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1590 if (!S_ISDIR(s
.st_mode
)) {
1591 log_error("%s is not a directory.", i
->path
);
1595 if (fstatat(dirfd(d
), "..", &ps
, AT_SYMLINK_NOFOLLOW
) != 0)
1596 return log_error_errno(errno
, "stat(%s/..) failed: %m", i
->path
);
1598 mountpoint
= s
.st_dev
!= ps
.st_dev
|| s
.st_ino
== ps
.st_ino
;
1600 log_debug("Cleanup threshold for %s \"%s\" is %s",
1601 mountpoint
? "mount point" : "directory",
1603 format_timestamp_us(timestamp
, sizeof(timestamp
), cutoff
));
1605 return dir_cleanup(i
, instance
, d
, &s
, cutoff
, s
.st_dev
, mountpoint
,
1606 MAX_DEPTH
, i
->keep_first_level
);
1609 static int clean_item(Item
*i
) {
1612 log_debug("Running clean action for entry %c %s", (char) i
->type
, i
->path
);
1615 case CREATE_DIRECTORY
:
1616 case CREATE_SUBVOLUME
:
1617 case CREATE_SUBVOLUME_INHERIT_QUOTA
:
1618 case CREATE_SUBVOLUME_NEW_QUOTA
:
1619 case EMPTY_DIRECTORY
:
1620 case TRUNCATE_DIRECTORY
:
1623 clean_item_instance(i
, i
->path
);
1625 case IGNORE_DIRECTORY_PATH
:
1626 return glob_item(i
, clean_item_instance
, false);
1632 static int process_item_array(ItemArray
*array
);
1634 static int process_item(Item
*i
) {
1636 _cleanup_free_
char *prefix
= NULL
;
1645 prefix
= malloc(strlen(i
->path
) + 1);
1649 PATH_FOREACH_PREFIX(prefix
, i
->path
) {
1652 j
= ordered_hashmap_get(items
, prefix
);
1656 s
= process_item_array(j
);
1657 if (s
< 0 && t
== 0)
1662 r
= arg_create
? create_item(i
) : 0;
1663 q
= arg_remove
? remove_item(i
) : 0;
1664 p
= arg_clean
? clean_item(i
) : 0;
1672 static int process_item_array(ItemArray
*array
) {
1678 for (n
= 0; n
< array
->count
; n
++) {
1679 k
= process_item(array
->items
+ n
);
1680 if (k
< 0 && r
== 0)
1687 static void item_free_contents(Item
*i
) {
1691 strv_free(i
->xattrs
);
1694 acl_free(i
->acl_access
);
1695 acl_free(i
->acl_default
);
1699 static void item_array_free(ItemArray
*a
) {
1705 for (n
= 0; n
< a
->count
; n
++)
1706 item_free_contents(a
->items
+ n
);
1711 static int item_compare(const void *a
, const void *b
) {
1712 const Item
*x
= a
, *y
= b
;
1714 /* Make sure that the ownership taking item is put first, so
1715 * that we first create the node, and then can adjust it */
1717 if (takes_ownership(x
->type
) && !takes_ownership(y
->type
))
1719 if (!takes_ownership(x
->type
) && takes_ownership(y
->type
))
1722 return (int) x
->type
- (int) y
->type
;
1725 static bool item_compatible(Item
*a
, Item
*b
) {
1728 assert(streq(a
->path
, b
->path
));
1730 if (takes_ownership(a
->type
) && takes_ownership(b
->type
))
1731 /* check if the items are the same */
1732 return streq_ptr(a
->argument
, b
->argument
) &&
1734 a
->uid_set
== b
->uid_set
&&
1737 a
->gid_set
== b
->gid_set
&&
1740 a
->mode_set
== b
->mode_set
&&
1741 a
->mode
== b
->mode
&&
1743 a
->age_set
== b
->age_set
&&
1746 a
->mask_perms
== b
->mask_perms
&&
1748 a
->keep_first_level
== b
->keep_first_level
&&
1750 a
->major_minor
== b
->major_minor
;
1755 static bool should_include_path(const char *path
) {
1758 STRV_FOREACH(prefix
, arg_exclude_prefixes
)
1759 if (path_startswith(path
, *prefix
)) {
1760 log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.",
1765 STRV_FOREACH(prefix
, arg_include_prefixes
)
1766 if (path_startswith(path
, *prefix
)) {
1767 log_debug("Entry \"%s\" matches include prefix \"%s\".", path
, *prefix
);
1771 /* no matches, so we should include this path only if we
1772 * have no whitelist at all */
1773 if (strv_length(arg_include_prefixes
) == 0)
1776 log_debug("Entry \"%s\" does not match any include prefix, skipping.", path
);
1780 static int parse_line(const char *fname
, unsigned line
, const char *buffer
) {
1782 _cleanup_free_
char *action
= NULL
, *mode
= NULL
, *user
= NULL
, *group
= NULL
, *age
= NULL
, *path
= NULL
;
1783 _cleanup_(item_free_contents
) Item i
= {};
1784 ItemArray
*existing
;
1787 bool force
= false, boot
= false;
1793 r
= extract_many_words(
1805 return log_error_errno(r
, "[%s:%u] Failed to parse line: %m", fname
, line
);
1807 log_error("[%s:%u] Syntax error.", fname
, line
);
1811 if (!isempty(buffer
) && !streq(buffer
, "-")) {
1812 i
.argument
= strdup(buffer
);
1817 if (isempty(action
)) {
1818 log_error("[%s:%u] Command too short '%s'.", fname
, line
, action
);
1822 for (pos
= 1; action
[pos
]; pos
++) {
1823 if (action
[pos
] == '!' && !boot
)
1825 else if (action
[pos
] == '+' && !force
)
1828 log_error("[%s:%u] Unknown modifiers in command '%s'",
1829 fname
, line
, action
);
1834 if (boot
&& !arg_boot
) {
1835 log_debug("Ignoring entry %s \"%s\" because --boot is not specified.",
1843 r
= specifier_printf(path
, specifier_table
, NULL
, &i
.path
);
1845 log_error("[%s:%u] Failed to replace specifiers: %s", fname
, line
, path
);
1851 case CREATE_DIRECTORY
:
1852 case CREATE_SUBVOLUME
:
1853 case CREATE_SUBVOLUME_INHERIT_QUOTA
:
1854 case CREATE_SUBVOLUME_NEW_QUOTA
:
1855 case EMPTY_DIRECTORY
:
1856 case TRUNCATE_DIRECTORY
:
1859 case IGNORE_DIRECTORY_PATH
:
1861 case RECURSIVE_REMOVE_PATH
:
1864 case RECURSIVE_RELABEL_PATH
:
1866 log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname
, line
, i
.type
);
1874 case CREATE_SYMLINK
:
1876 i
.argument
= strappend("/usr/share/factory/", i
.path
);
1884 log_error("[%s:%u] Write file requires argument.", fname
, line
);
1891 i
.argument
= strappend("/usr/share/factory/", i
.path
);
1894 } else if (!path_is_absolute(i
.argument
)) {
1895 log_error("[%s:%u] Source path is not absolute.", fname
, line
);
1899 path_kill_slashes(i
.argument
);
1902 case CREATE_CHAR_DEVICE
:
1903 case CREATE_BLOCK_DEVICE
: {
1904 unsigned major
, minor
;
1907 log_error("[%s:%u] Device file requires argument.", fname
, line
);
1911 if (sscanf(i
.argument
, "%u:%u", &major
, &minor
) != 2) {
1912 log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname
, line
, i
.argument
);
1916 i
.major_minor
= makedev(major
, minor
);
1921 case RECURSIVE_SET_XATTR
:
1923 log_error("[%s:%u] Set extended attribute requires argument.", fname
, line
);
1926 r
= parse_xattrs_from_arg(&i
);
1932 case RECURSIVE_SET_ACL
:
1934 log_error("[%s:%u] Set ACLs requires argument.", fname
, line
);
1937 r
= parse_acls_from_arg(&i
);
1943 case RECURSIVE_SET_ATTRIBUTE
:
1945 log_error("[%s:%u] Set file attribute requires argument.", fname
, line
);
1948 r
= parse_attribute_from_arg(&i
);
1954 log_error("[%s:%u] Unknown command type '%c'.", fname
, line
, (char) i
.type
);
1958 if (!path_is_absolute(i
.path
)) {
1959 log_error("[%s:%u] Path '%s' not absolute.", fname
, line
, i
.path
);
1963 path_kill_slashes(i
.path
);
1965 if (!should_include_path(i
.path
))
1971 p
= prefix_root(arg_root
, i
.path
);
1979 if (!isempty(user
) && !streq(user
, "-")) {
1980 const char *u
= user
;
1982 r
= get_user_creds(&u
, &i
.uid
, NULL
, NULL
, NULL
);
1984 log_error("[%s:%u] Unknown user '%s'.", fname
, line
, user
);
1991 if (!isempty(group
) && !streq(group
, "-")) {
1992 const char *g
= group
;
1994 r
= get_group_creds(&g
, &i
.gid
);
1996 log_error("[%s:%u] Unknown group '%s'.", fname
, line
, group
);
2003 if (!isempty(mode
) && !streq(mode
, "-")) {
2004 const char *mm
= mode
;
2008 i
.mask_perms
= true;
2012 if (parse_mode(mm
, &m
) < 0) {
2013 log_error("[%s:%u] Invalid mode '%s'.", fname
, line
, mode
);
2020 i
.mode
= IN_SET(i
.type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
, CREATE_SUBVOLUME
, CREATE_SUBVOLUME_INHERIT_QUOTA
, CREATE_SUBVOLUME_NEW_QUOTA
) ? 0755 : 0644;
2022 if (!isempty(age
) && !streq(age
, "-")) {
2023 const char *a
= age
;
2026 i
.keep_first_level
= true;
2030 if (parse_sec(a
, &i
.age
) < 0) {
2031 log_error("[%s:%u] Invalid age '%s'.", fname
, line
, age
);
2038 h
= needs_glob(i
.type
) ? globs
: items
;
2040 existing
= ordered_hashmap_get(h
, i
.path
);
2044 for (n
= 0; n
< existing
->count
; n
++) {
2045 if (!item_compatible(existing
->items
+ n
, &i
)) {
2046 log_warning("[%s:%u] Duplicate line for path \"%s\", ignoring.",
2047 fname
, line
, i
.path
);
2052 existing
= new0(ItemArray
, 1);
2053 r
= ordered_hashmap_put(h
, i
.path
, existing
);
2058 if (!GREEDY_REALLOC(existing
->items
, existing
->size
, existing
->count
+ 1))
2061 memcpy(existing
->items
+ existing
->count
++, &i
, sizeof(i
));
2063 /* Sort item array, to enforce stable ordering of application */
2064 qsort_safe(existing
->items
, existing
->count
, sizeof(Item
), item_compare
);
2070 static void help(void) {
2071 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
2072 "Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
2073 " -h --help Show this help\n"
2074 " --version Show package version\n"
2075 " --create Create marked files/directories\n"
2076 " --clean Clean up marked directories\n"
2077 " --remove Remove marked files/directories\n"
2078 " --boot Execute actions only safe at boot\n"
2079 " --prefix=PATH Only apply rules with the specified prefix\n"
2080 " --exclude-prefix=PATH Ignore rules with the specified prefix\n"
2081 " --root=PATH Operate on an alternate filesystem root\n",
2082 program_invocation_short_name
);
2085 static int parse_argv(int argc
, char *argv
[]) {
2088 ARG_VERSION
= 0x100,
2098 static const struct option options
[] = {
2099 { "help", no_argument
, NULL
, 'h' },
2100 { "version", no_argument
, NULL
, ARG_VERSION
},
2101 { "create", no_argument
, NULL
, ARG_CREATE
},
2102 { "clean", no_argument
, NULL
, ARG_CLEAN
},
2103 { "remove", no_argument
, NULL
, ARG_REMOVE
},
2104 { "boot", no_argument
, NULL
, ARG_BOOT
},
2105 { "prefix", required_argument
, NULL
, ARG_PREFIX
},
2106 { "exclude-prefix", required_argument
, NULL
, ARG_EXCLUDE_PREFIX
},
2107 { "root", required_argument
, NULL
, ARG_ROOT
},
2116 while ((c
= getopt_long(argc
, argv
, "h", options
, NULL
)) >= 0)
2144 if (strv_push(&arg_include_prefixes
, optarg
) < 0)
2148 case ARG_EXCLUDE_PREFIX
:
2149 if (strv_push(&arg_exclude_prefixes
, optarg
) < 0)
2154 r
= parse_path_argument_and_warn(optarg
, true, &arg_root
);
2163 assert_not_reached("Unhandled option");
2166 if (!arg_clean
&& !arg_create
&& !arg_remove
) {
2167 log_error("You need to specify at least one of --clean, --create or --remove.");
2174 static int read_config_file(const char *fn
, bool ignore_enoent
) {
2175 _cleanup_fclose_
FILE *_f
= NULL
;
2177 char line
[LINE_MAX
];
2185 if (streq(fn
, "-")) {
2186 log_debug("Reading config from stdin.");
2190 r
= search_and_fopen_nulstr(fn
, "re", arg_root
, conf_file_dirs
, &_f
);
2192 if (ignore_enoent
&& r
== -ENOENT
) {
2193 log_debug_errno(r
, "Failed to open \"%s\", ignoring: %m", fn
);
2197 return log_error_errno(r
, "Failed to open '%s': %m", fn
);
2199 log_debug("Reading config file \"%s\".", fn
);
2203 FOREACH_LINE(line
, f
, break) {
2210 if (*l
== '#' || *l
== 0)
2213 k
= parse_line(fn
, v
, l
);
2214 if (k
< 0 && r
== 0)
2218 /* we have to determine age parameter for each entry of type X */
2219 ORDERED_HASHMAP_FOREACH(i
, globs
, iterator
) {
2221 Item
*j
, *candidate_item
= NULL
;
2223 if (i
->type
!= IGNORE_DIRECTORY_PATH
)
2226 ORDERED_HASHMAP_FOREACH(j
, items
, iter
) {
2227 if (!IN_SET(j
->type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
, CREATE_SUBVOLUME
, CREATE_SUBVOLUME_INHERIT_QUOTA
, CREATE_SUBVOLUME_NEW_QUOTA
))
2230 if (path_equal(j
->path
, i
->path
)) {
2235 if ((!candidate_item
&& path_startswith(i
->path
, j
->path
)) ||
2236 (candidate_item
&& path_startswith(j
->path
, candidate_item
->path
) && (fnmatch(i
->path
, j
->path
, FNM_PATHNAME
| FNM_PERIOD
) == 0)))
2240 if (candidate_item
&& candidate_item
->age_set
) {
2241 i
->age
= candidate_item
->age
;
2247 log_error_errno(errno
, "Failed to read from file %s: %m", fn
);
2255 int main(int argc
, char *argv
[]) {
2260 r
= parse_argv(argc
, argv
);
2264 log_set_target(LOG_TARGET_AUTO
);
2265 log_parse_environment();
2272 items
= ordered_hashmap_new(&string_hash_ops
);
2273 globs
= ordered_hashmap_new(&string_hash_ops
);
2275 if (!items
|| !globs
) {
2282 if (optind
< argc
) {
2285 for (j
= optind
; j
< argc
; j
++) {
2286 k
= read_config_file(argv
[j
], false);
2287 if (k
< 0 && r
== 0)
2292 _cleanup_strv_free_
char **files
= NULL
;
2295 r
= conf_files_list_nulstr(&files
, ".conf", arg_root
, conf_file_dirs
);
2297 log_error_errno(r
, "Failed to enumerate tmpfiles.d files: %m");
2301 STRV_FOREACH(f
, files
) {
2302 k
= read_config_file(*f
, true);
2303 if (k
< 0 && r
== 0)
2308 /* The non-globbing ones usually create things, hence we apply
2310 ORDERED_HASHMAP_FOREACH(a
, items
, iterator
) {
2311 k
= process_item_array(a
);
2312 if (k
< 0 && r
== 0)
2316 /* The globbing ones usually alter things, hence we apply them
2318 ORDERED_HASHMAP_FOREACH(a
, globs
, iterator
) {
2319 k
= process_item_array(a
);
2320 if (k
< 0 && r
== 0)
2325 while ((a
= ordered_hashmap_steal_first(items
)))
2328 while ((a
= ordered_hashmap_steal_first(globs
)))
2331 ordered_hashmap_free(items
);
2332 ordered_hashmap_free(globs
);
2334 free(arg_include_prefixes
);
2335 free(arg_exclude_prefixes
);
2338 set_free_free(unix_sockets
);
2340 mac_selinux_finish();
2342 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;