1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering, Kay Sievers
7 Copyright 2015 Zbigniew Jędrzejewski-Szmek
9 systemd is free software; you can redistribute it and/or modify it
10 under the terms of the GNU Lesser General Public License as published by
11 the Free Software Foundation; either version 2.1 of the License, or
12 (at your option) any later version.
14 systemd is distributed in the hope that it will be useful, but
15 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 Lesser General Public License for more details.
19 You should have received a copy of the GNU Lesser General Public License
20 along with systemd; If not, see <http://www.gnu.org/licenses/>.
38 #include <sys/xattr.h>
46 #include "path-util.h"
50 #include "conf-files.h"
51 #include "capability.h"
52 #include "specifier.h"
56 #include "selinux-util.h"
57 #include "btrfs-util.h"
59 #include "formats-util.h"
61 /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates
62 * them in the file system. This is intended to be used to create
63 * properly owned directories beneath /tmp, /var/tmp, /run, which are
64 * volatile and hence need to be recreated on bootup. */
66 typedef enum ItemType
{
67 /* These ones take file names */
70 CREATE_DIRECTORY
= 'd',
71 TRUNCATE_DIRECTORY
= 'D',
72 CREATE_SUBVOLUME
= 'v',
75 CREATE_CHAR_DEVICE
= 'c',
76 CREATE_BLOCK_DEVICE
= 'b',
79 /* These ones take globs */
82 RECURSIVE_SET_XATTR
= 'T',
84 RECURSIVE_SET_ACL
= 'A',
86 RECURSIVE_SET_ATTRIBUTE
= 'H',
88 IGNORE_DIRECTORY_PATH
= 'X',
90 RECURSIVE_REMOVE_PATH
= 'R',
92 RECURSIVE_RELABEL_PATH
= 'Z',
93 ADJUST_MODE
= 'm', /* legacy, 'z' is identical to this */
112 unsigned attribute_value
;
113 unsigned attribute_mask
;
120 bool attribute_set
:1;
122 bool keep_first_level
:1;
129 typedef struct ItemArray
{
135 static bool arg_create
= false;
136 static bool arg_clean
= false;
137 static bool arg_remove
= false;
138 static bool arg_boot
= false;
140 static char **arg_include_prefixes
= NULL
;
141 static char **arg_exclude_prefixes
= NULL
;
142 static char *arg_root
= NULL
;
144 static const char conf_file_dirs
[] = CONF_DIRS_NULSTR("tmpfiles");
146 #define MAX_DEPTH 256
148 static OrderedHashmap
*items
= NULL
, *globs
= NULL
;
149 static Set
*unix_sockets
= NULL
;
151 static const Specifier specifier_table
[] = {
152 { 'm', specifier_machine_id
, NULL
},
153 { 'b', specifier_boot_id
, NULL
},
154 { 'H', specifier_host_name
, NULL
},
155 { 'v', specifier_kernel_release
, NULL
},
159 static bool needs_glob(ItemType t
) {
163 IGNORE_DIRECTORY_PATH
,
165 RECURSIVE_REMOVE_PATH
,
168 RECURSIVE_RELABEL_PATH
,
174 RECURSIVE_SET_ATTRIBUTE
);
177 static bool takes_ownership(ItemType t
) {
191 IGNORE_DIRECTORY_PATH
,
193 RECURSIVE_REMOVE_PATH
);
196 static struct Item
* find_glob(OrderedHashmap
*h
, const char *match
) {
200 ORDERED_HASHMAP_FOREACH(j
, h
, i
) {
203 for (n
= 0; n
< j
->count
; n
++) {
204 Item
*item
= j
->items
+ n
;
206 if (fnmatch(item
->path
, match
, FNM_PATHNAME
|FNM_PERIOD
) == 0)
214 static void load_unix_sockets(void) {
215 _cleanup_fclose_
FILE *f
= NULL
;
221 /* We maintain a cache of the sockets we found in
222 * /proc/net/unix to speed things up a little. */
224 unix_sockets
= set_new(&string_hash_ops
);
228 f
= fopen("/proc/net/unix", "re");
233 if (!fgets(line
, sizeof(line
), f
))
240 if (!fgets(line
, sizeof(line
), f
))
245 p
= strchr(line
, ':');
253 p
+= strspn(p
, WHITESPACE
);
254 p
+= strcspn(p
, WHITESPACE
); /* skip one more word */
255 p
+= strspn(p
, WHITESPACE
);
264 path_kill_slashes(s
);
266 k
= set_consume(unix_sockets
, s
);
267 if (k
< 0 && k
!= -EEXIST
)
274 set_free_free(unix_sockets
);
278 static bool unix_socket_alive(const char *fn
) {
284 return !!set_get(unix_sockets
, (char*) fn
);
286 /* We don't know, so assume yes */
290 static int dir_is_mount_point(DIR *d
, const char *subdir
) {
292 union file_handle_union h
= FILE_HANDLE_INIT
;
293 int mount_id_parent
, mount_id
;
296 r_p
= name_to_handle_at(dirfd(d
), ".", &h
.handle
, &mount_id_parent
, 0);
300 h
.handle
.handle_bytes
= MAX_HANDLE_SZ
;
301 r
= name_to_handle_at(dirfd(d
), subdir
, &h
.handle
, &mount_id
, 0);
305 /* got no handle; make no assumptions, return error */
306 if (r_p
< 0 && r
< 0)
309 /* got both handles; if they differ, it is a mount point */
310 if (r_p
>= 0 && r
>= 0)
311 return mount_id_parent
!= mount_id
;
313 /* got only one handle; assume different mount points if one
314 * of both queries was not supported by the filesystem */
315 if (r_p
== -ENOSYS
|| r_p
== -EOPNOTSUPP
|| r
== -ENOSYS
|| r
== -EOPNOTSUPP
)
324 static DIR* xopendirat_nomod(int dirfd
, const char *path
) {
327 dir
= xopendirat(dirfd
, path
, O_NOFOLLOW
|O_NOATIME
);
331 log_debug_errno(errno
, "Cannot open %sdirectory \"%s\": %m", dirfd
== AT_FDCWD
? "" : "sub", path
);
335 dir
= xopendirat(dirfd
, path
, O_NOFOLLOW
);
337 log_debug_errno(errno
, "Cannot open %sdirectory \"%s\": %m", dirfd
== AT_FDCWD
? "" : "sub", path
);
342 static DIR* opendir_nomod(const char *path
) {
343 return xopendirat_nomod(AT_FDCWD
, path
);
346 static int dir_cleanup(
350 const struct stat
*ds
,
355 bool keep_this_level
) {
358 struct timespec times
[2];
359 bool deleted
= false;
362 while ((dent
= readdir(d
))) {
365 _cleanup_free_
char *sub_path
= NULL
;
367 if (STR_IN_SET(dent
->d_name
, ".", ".."))
370 if (fstatat(dirfd(d
), dent
->d_name
, &s
, AT_SYMLINK_NOFOLLOW
) < 0) {
374 /* FUSE, NFS mounts, SELinux might return EACCES */
376 log_debug_errno(errno
, "stat(%s/%s) failed: %m", p
, dent
->d_name
);
378 log_error_errno(errno
, "stat(%s/%s) failed: %m", p
, dent
->d_name
);
383 /* Stay on the same filesystem */
384 if (s
.st_dev
!= rootdev
) {
385 log_debug("Ignoring \"%s/%s\": different filesystem.", p
, dent
->d_name
);
389 /* Try to detect bind mounts of the same filesystem instance; they
390 * do not differ in device major/minors. This type of query is not
391 * supported on all kernels or filesystem types though. */
392 if (S_ISDIR(s
.st_mode
) && dir_is_mount_point(d
, dent
->d_name
) > 0) {
393 log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.",
398 /* Do not delete read-only files owned by root */
399 if (s
.st_uid
== 0 && !(s
.st_mode
& S_IWUSR
)) {
400 log_debug("Ignoring \"%s/%s\": read-only and owner by root.", p
, dent
->d_name
);
404 sub_path
= strjoin(p
, "/", dent
->d_name
, NULL
);
410 /* Is there an item configured for this path? */
411 if (ordered_hashmap_get(items
, sub_path
)) {
412 log_debug("Ignoring \"%s\": a separate entry exists.", sub_path
);
416 if (find_glob(globs
, sub_path
)) {
417 log_debug("Ignoring \"%s\": a separate glob exists.", sub_path
);
421 if (S_ISDIR(s
.st_mode
)) {
424 streq(dent
->d_name
, "lost+found") &&
426 log_debug("Ignoring \"%s\".", sub_path
);
431 log_warning("Reached max depth on \"%s\".", sub_path
);
433 _cleanup_closedir_
DIR *sub_dir
;
436 sub_dir
= xopendirat_nomod(dirfd(d
), dent
->d_name
);
439 r
= log_error_errno(errno
, "opendir(%s) failed: %m", sub_path
);
444 q
= dir_cleanup(i
, sub_path
, sub_dir
, &s
, cutoff
, rootdev
, false, maxdepth
-1, false);
449 /* Note: if you are wondering why we don't
450 * support the sticky bit for excluding
451 * directories from cleaning like we do it for
452 * other file system objects: well, the sticky
453 * bit already has a meaning for directories,
454 * so we don't want to overload that. */
456 if (keep_this_level
) {
457 log_debug("Keeping \"%s\".", sub_path
);
461 /* Ignore ctime, we change it when deleting */
462 age
= timespec_load(&s
.st_mtim
);
464 char a
[FORMAT_TIMESTAMP_MAX
];
465 /* Follows spelling in stat(1). */
466 log_debug("Directory \"%s\": modify time %s is too new.",
468 format_timestamp_us(a
, sizeof(a
), age
));
472 age
= timespec_load(&s
.st_atim
);
474 char a
[FORMAT_TIMESTAMP_MAX
];
475 log_debug("Directory \"%s\": access time %s is too new.",
477 format_timestamp_us(a
, sizeof(a
), age
));
481 log_debug("Removing directory \"%s\".", sub_path
);
482 if (unlinkat(dirfd(d
), dent
->d_name
, AT_REMOVEDIR
) < 0)
483 if (errno
!= ENOENT
&& errno
!= ENOTEMPTY
) {
484 log_error_errno(errno
, "rmdir(%s): %m", sub_path
);
489 /* Skip files for which the sticky bit is
490 * set. These are semantics we define, and are
491 * unknown elsewhere. See XDG_RUNTIME_DIR
492 * specification for details. */
493 if (s
.st_mode
& S_ISVTX
) {
494 log_debug("Skipping \"%s\": sticky bit set.", sub_path
);
498 if (mountpoint
&& S_ISREG(s
.st_mode
))
499 if (s
.st_uid
== 0 && STR_IN_SET(dent
->d_name
,
503 log_debug("Skipping \"%s\".", sub_path
);
507 /* Ignore sockets that are listed in /proc/net/unix */
508 if (S_ISSOCK(s
.st_mode
) && unix_socket_alive(sub_path
)) {
509 log_debug("Skipping \"%s\": live socket.", sub_path
);
513 /* Ignore device nodes */
514 if (S_ISCHR(s
.st_mode
) || S_ISBLK(s
.st_mode
)) {
515 log_debug("Skipping \"%s\": a device.", sub_path
);
519 /* Keep files on this level around if this is
521 if (keep_this_level
) {
522 log_debug("Keeping \"%s\".", sub_path
);
526 age
= timespec_load(&s
.st_mtim
);
528 char a
[FORMAT_TIMESTAMP_MAX
];
529 /* Follows spelling in stat(1). */
530 log_debug("File \"%s\": modify time %s is too new.",
532 format_timestamp_us(a
, sizeof(a
), age
));
536 age
= timespec_load(&s
.st_atim
);
538 char a
[FORMAT_TIMESTAMP_MAX
];
539 log_debug("File \"%s\": access time %s is too new.",
541 format_timestamp_us(a
, sizeof(a
), age
));
545 age
= timespec_load(&s
.st_ctim
);
547 char a
[FORMAT_TIMESTAMP_MAX
];
548 log_debug("File \"%s\": change time %s is too new.",
550 format_timestamp_us(a
, sizeof(a
), age
));
554 log_debug("unlink \"%s\"", sub_path
);
556 if (unlinkat(dirfd(d
), dent
->d_name
, 0) < 0)
558 r
= log_error_errno(errno
, "unlink(%s): %m", sub_path
);
567 char a
[FORMAT_TIMESTAMP_MAX
], b
[FORMAT_TIMESTAMP_MAX
];
569 /* Restore original directory timestamps */
570 times
[0] = ds
->st_atim
;
571 times
[1] = ds
->st_mtim
;
573 age1
= timespec_load(&ds
->st_atim
);
574 age2
= timespec_load(&ds
->st_mtim
);
575 log_debug("Restoring access and modification time on \"%s\": %s, %s",
577 format_timestamp_us(a
, sizeof(a
), age1
),
578 format_timestamp_us(b
, sizeof(b
), age2
));
579 if (futimens(dirfd(d
), times
) < 0)
580 log_error_errno(errno
, "utimensat(%s): %m", p
);
586 static int path_set_perms(Item
*i
, const char *path
) {
587 _cleanup_close_
int fd
= -1;
593 /* We open the file with O_PATH here, to make the operation
594 * somewhat atomic. Also there's unfortunately no fchmodat()
595 * with AT_SYMLINK_NOFOLLOW, hence we emulate it here via
598 fd
= open(path
, O_RDONLY
|O_NOFOLLOW
|O_CLOEXEC
|O_PATH
|O_NOATIME
);
600 return log_error_errno(errno
, "Adjusting owner and mode for %s failed: %m", path
);
602 if (fstatat(fd
, "", &st
, AT_EMPTY_PATH
) < 0)
603 return log_error_errno(errno
, "Failed to fstat() file %s: %m", path
);
605 if (S_ISLNK(st
.st_mode
))
606 log_debug("Skipping mode an owner fix for symlink %s.", path
);
608 char fn
[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
609 xsprintf(fn
, "/proc/self/fd/%i", fd
);
611 /* not using i->path directly because it may be a glob */
616 if (!(st
.st_mode
& 0111))
618 if (!(st
.st_mode
& 0222))
620 if (!(st
.st_mode
& 0444))
622 if (!S_ISDIR(st
.st_mode
))
623 m
&= ~07000; /* remove sticky/sgid/suid bit, unless directory */
626 if (m
== (st
.st_mode
& 07777))
627 log_debug("\"%s\" has right mode %o", path
, st
.st_mode
);
629 log_debug("chmod \"%s\" to mode %o", path
, m
);
630 if (chmod(fn
, m
) < 0)
631 return log_error_errno(errno
, "chmod(%s) failed: %m", path
);
635 if ((i
->uid
!= st
.st_uid
|| i
->gid
!= st
.st_gid
) &&
636 (i
->uid_set
|| i
->gid_set
)) {
637 log_debug("chown \"%s\" to "UID_FMT
"."GID_FMT
,
639 i
->uid_set
? i
->uid
: UID_INVALID
,
640 i
->gid_set
? i
->gid
: GID_INVALID
);
642 i
->uid_set
? i
->uid
: UID_INVALID
,
643 i
->gid_set
? i
->gid
: GID_INVALID
) < 0)
644 return log_error_errno(errno
, "chown(%s) failed: %m", path
);
650 return label_fix(path
, false, false);
653 static int parse_xattrs_from_arg(Item
*i
) {
663 _cleanup_free_
char *name
= NULL
, *value
= NULL
, *xattr
= NULL
, *xattr_replaced
= NULL
;
665 r
= unquote_first_word(&p
, &xattr
, UNQUOTE_CUNESCAPE
);
667 log_warning_errno(r
, "Failed to parse extended attribute '%s', ignoring: %m", p
);
671 r
= specifier_printf(xattr
, specifier_table
, NULL
, &xattr_replaced
);
673 return log_error_errno(r
, "Failed to replace specifiers in extended attribute '%s': %m", xattr
);
675 r
= split_pair(xattr_replaced
, "=", &name
, &value
);
677 log_warning_errno(r
, "Failed to parse extended attribute, ignoring: %s", xattr
);
681 if (isempty(name
) || isempty(value
)) {
682 log_warning("Malformed extended attribute found, ignoring: %s", xattr
);
686 if (strv_push_pair(&i
->xattrs
, name
, value
) < 0)
695 static int path_set_xattrs(Item
*i
, const char *path
) {
696 char **name
, **value
;
701 STRV_FOREACH_PAIR(name
, value
, i
->xattrs
) {
705 log_debug("Setting extended attribute '%s=%s' on %s.", *name
, *value
, path
);
706 if (lsetxattr(path
, *name
, *value
, n
, 0) < 0) {
707 log_error("Setting extended attribute %s=%s on %s failed: %m", *name
, *value
, path
);
714 static int parse_acls_from_arg(Item
*item
) {
720 /* If force (= modify) is set, we will not modify the acl
721 * afterwards, so the mask can be added now if necessary. */
723 r
= parse_acl(item
->argument
, &item
->acl_access
, &item
->acl_default
, !item
->force
);
725 log_warning_errno(r
, "Failed to parse ACL \"%s\": %m. Ignoring", item
->argument
);
727 log_warning_errno(ENOSYS
, "ACLs are not supported. Ignoring");
734 static int path_set_acl(const char *path
, const char *pretty
, acl_type_t type
, acl_t acl
, bool modify
) {
735 _cleanup_(acl_free_charpp
) char *t
= NULL
;
736 _cleanup_(acl_freep
) acl_t dup
= NULL
;
739 /* Returns 0 for success, positive error if already warned,
740 * negative error otherwise. */
743 r
= acls_for_file(path
, type
, acl
, &dup
);
747 r
= calc_acl_mask_if_needed(&dup
);
755 /* the mask was already added earlier if needed */
758 r
= add_base_acls_if_needed(&dup
, path
);
762 t
= acl_to_any_text(dup
, NULL
, ',', TEXT_ABBREVIATE
);
763 log_debug("Setting %s ACL %s on %s.",
764 type
== ACL_TYPE_ACCESS
? "access" : "default",
767 r
= acl_set_file(path
, type
, dup
);
769 /* Return positive to indicate we already warned */
770 return -log_error_errno(errno
,
771 "Setting %s ACL \"%s\" on %s failed: %m",
772 type
== ACL_TYPE_ACCESS
? "access" : "default",
779 static int path_set_acls(Item
*item
, const char *path
) {
782 char fn
[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
783 _cleanup_close_
int fd
= -1;
789 fd
= open(path
, O_RDONLY
|O_NOFOLLOW
|O_CLOEXEC
|O_PATH
|O_NOATIME
);
791 return log_error_errno(errno
, "Adjusting ACL of %s failed: %m", path
);
793 if (fstatat(fd
, "", &st
, AT_EMPTY_PATH
) < 0)
794 return log_error_errno(errno
, "Failed to fstat() file %s: %m", path
);
796 if (S_ISLNK(st
.st_mode
)) {
797 log_debug("Skipping ACL fix for symlink %s.", path
);
801 xsprintf(fn
, "/proc/self/fd/%i", fd
);
803 if (item
->acl_access
)
804 r
= path_set_acl(fn
, path
, ACL_TYPE_ACCESS
, item
->acl_access
, item
->force
);
806 if (r
== 0 && item
->acl_default
)
807 r
= path_set_acl(fn
, path
, ACL_TYPE_DEFAULT
, item
->acl_default
, item
->force
);
810 return -r
; /* already warned */
811 else if (r
== -EOPNOTSUPP
) {
812 log_debug_errno(r
, "ACLs not supported by file system at %s", path
);
815 log_error_errno(r
, "ACL operation on \"%s\" failed: %m", path
);
820 #define ATTRIBUTES_ALL \
829 FS_JOURNAL_DATA_FL | \
836 static int parse_attribute_from_arg(Item
*item
) {
838 static const struct {
842 { 'A', FS_NOATIME_FL
}, /* do not update atime */
843 { 'S', FS_SYNC_FL
}, /* Synchronous updates */
844 { 'D', FS_DIRSYNC_FL
}, /* dirsync behaviour (directories only) */
845 { 'a', FS_APPEND_FL
}, /* writes to file may only append */
846 { 'c', FS_COMPR_FL
}, /* Compress file */
847 { 'd', FS_NODUMP_FL
}, /* do not dump file */
848 { 'e', FS_EXTENT_FL
}, /* Top of directory hierarchies*/
849 { 'i', FS_IMMUTABLE_FL
}, /* Immutable file */
850 { 'j', FS_JOURNAL_DATA_FL
}, /* Reserved for ext3 */
851 { 's', FS_SECRM_FL
}, /* Secure deletion */
852 { 'u', FS_UNRM_FL
}, /* Undelete */
853 { 't', FS_NOTAIL_FL
}, /* file tail should not be merged */
854 { 'T', FS_TOPDIR_FL
}, /* Top of directory hierarchies*/
855 { 'C', FS_NOCOW_FL
}, /* Do not cow file */
864 unsigned value
= 0, mask
= 0;
874 } else if (*p
== '-') {
877 } else if (*p
== '=') {
883 if (isempty(p
) && mode
!= MODE_SET
) {
884 log_error("Setting file attribute on '%s' needs an attribute specification.", item
->path
);
888 for (; p
&& *p
; p
++) {
891 for (i
= 0; i
< ELEMENTSOF(attributes
); i
++)
892 if (*p
== attributes
[i
].character
)
895 if (i
>= ELEMENTSOF(attributes
)) {
896 log_error("Unknown file attribute '%c' on '%s'.", *p
, item
->path
);
900 v
= attributes
[i
].value
;
902 if (mode
== MODE_ADD
|| mode
== MODE_SET
)
910 if (mode
== MODE_SET
)
911 mask
|= ATTRIBUTES_ALL
;
915 item
->attribute_mask
= mask
;
916 item
->attribute_value
= value
;
917 item
->attribute_set
= true;
922 static int path_set_attribute(Item
*item
, const char *path
) {
923 _cleanup_close_
int fd
= -1;
928 if (!item
->attribute_set
|| item
->attribute_mask
== 0)
931 fd
= open(path
, O_RDONLY
|O_NONBLOCK
|O_CLOEXEC
|O_NOATIME
|O_NOFOLLOW
);
934 return log_error_errno(errno
, "Skipping file attributes adjustment on symlink %s.", path
);
936 return log_error_errno(errno
, "Cannot open '%s': %m", path
);
939 if (fstat(fd
, &st
) < 0)
940 return log_error_errno(errno
, "Cannot stat '%s': %m", path
);
942 /* Issuing the file attribute ioctls on device nodes is not
943 * safe, as that will be delivered to the drivers, not the
944 * file system containing the device node. */
945 if (!S_ISREG(st
.st_mode
) && !S_ISDIR(st
.st_mode
)) {
946 log_error("Setting file flags is only supported on regular files and directories, cannot set on '%s'.", path
);
950 f
= item
->attribute_value
& item
->attribute_mask
;
952 /* Mask away directory-specific flags */
953 if (!S_ISDIR(st
.st_mode
))
956 r
= chattr_fd(fd
, f
, item
->attribute_mask
);
958 log_full_errno(r
== -ENOTTY
? LOG_DEBUG
: LOG_WARNING
,
960 "Cannot set file attribute for '%s', value=0x%08x, mask=0x%08x: %m",
961 path
, item
->attribute_value
, item
->attribute_mask
);
966 static int write_one_file(Item
*i
, const char *path
) {
967 _cleanup_close_
int fd
= -1;
974 flags
= i
->type
== CREATE_FILE
? O_CREAT
|O_APPEND
|O_NOFOLLOW
:
975 i
->type
== TRUNCATE_FILE
? O_CREAT
|O_TRUNC
|O_NOFOLLOW
: 0;
977 RUN_WITH_UMASK(0000) {
978 mac_selinux_create_file_prepare(path
, S_IFREG
);
979 fd
= open(path
, flags
|O_NDELAY
|O_CLOEXEC
|O_WRONLY
|O_NOCTTY
, i
->mode
);
980 mac_selinux_create_file_clear();
984 if (i
->type
== WRITE_FILE
&& errno
== ENOENT
) {
985 log_debug_errno(errno
, "Not writing \"%s\": %m", path
);
990 if (!i
->argument
&& errno
== EROFS
&& stat(path
, &st
) == 0 &&
991 (i
->type
== CREATE_FILE
|| st
.st_size
== 0))
994 return log_error_errno(r
, "Failed to create file %s: %m", path
);
998 _cleanup_free_
char *unescaped
= NULL
, *replaced
= NULL
;
1000 log_debug("%s to \"%s\".", i
->type
== CREATE_FILE
? "Appending" : "Writing", path
);
1002 r
= cunescape(i
->argument
, 0, &unescaped
);
1004 return log_error_errno(r
, "Failed to unescape parameter to write: %s", i
->argument
);
1006 r
= specifier_printf(unescaped
, specifier_table
, NULL
, &replaced
);
1008 return log_error_errno(r
, "Failed to replace specifiers in parameter to write '%s': %m", unescaped
);
1010 r
= loop_write(fd
, replaced
, strlen(replaced
), false);
1012 return log_error_errno(r
, "Failed to write file \"%s\": %m", path
);
1014 log_debug("\"%s\" has been created.", path
);
1016 fd
= safe_close(fd
);
1018 if (stat(path
, &st
) < 0)
1019 return log_error_errno(errno
, "stat(%s) failed: %m", path
);
1022 if (!S_ISREG(st
.st_mode
)) {
1023 log_error("%s is not a file.", path
);
1027 r
= path_set_perms(i
, path
);
1034 typedef int (*action_t
)(Item
*, const char *);
1036 static int item_do_children(Item
*i
, const char *path
, action_t action
) {
1037 _cleanup_closedir_
DIR *d
;
1043 /* This returns the first error we run into, but nevertheless
1046 d
= opendir_nomod(path
);
1048 return errno
== ENOENT
|| errno
== ENOTDIR
? 0 : -errno
;
1051 _cleanup_free_
char *p
= NULL
;
1058 if (errno
!= 0 && r
== 0)
1064 if (STR_IN_SET(de
->d_name
, ".", ".."))
1067 p
= strjoin(path
, "/", de
->d_name
, NULL
);
1072 if (q
< 0 && q
!= -ENOENT
&& r
== 0)
1075 if (IN_SET(de
->d_type
, DT_UNKNOWN
, DT_DIR
)) {
1076 q
= item_do_children(i
, p
, action
);
1077 if (q
< 0 && r
== 0)
1085 static int glob_item(Item
*i
, action_t action
, bool recursive
) {
1086 _cleanup_globfree_ glob_t g
= {
1087 .gl_closedir
= (void (*)(void *)) closedir
,
1088 .gl_readdir
= (struct dirent
*(*)(void *)) readdir
,
1089 .gl_opendir
= (void *(*)(const char *)) opendir_nomod
,
1097 k
= glob(i
->path
, GLOB_NOSORT
|GLOB_BRACE
|GLOB_ALTDIRFUNC
, NULL
, &g
);
1098 if (k
!= 0 && k
!= GLOB_NOMATCH
)
1099 return log_error_errno(errno
?: EIO
, "glob(%s) failed: %m", i
->path
);
1101 STRV_FOREACH(fn
, g
.gl_pathv
) {
1103 if (k
< 0 && r
== 0)
1107 k
= item_do_children(i
, *fn
, action
);
1108 if (k
< 0 && r
== 0)
1121 _CREATION_MODE_INVALID
= -1
1124 static const char *creation_mode_verb_table
[_CREATION_MODE_MAX
] = {
1125 [CREATION_NORMAL
] = "Created",
1126 [CREATION_EXISTING
] = "Found existing",
1127 [CREATION_FORCE
] = "Created replacement",
1130 DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb
, CreationMode
);
1132 static int create_item(Item
*i
) {
1133 _cleanup_free_
char *resolved
= NULL
;
1136 CreationMode creation
;
1140 log_debug("Running create action for entry %c %s", (char) i
->type
, i
->path
);
1145 case IGNORE_DIRECTORY_PATH
:
1147 case RECURSIVE_REMOVE_PATH
:
1152 r
= write_one_file(i
, i
->path
);
1158 r
= specifier_printf(i
->argument
, specifier_table
, NULL
, &resolved
);
1160 return log_error_errno(r
, "Failed to substitute specifiers in copy source %s: %m", i
->argument
);
1162 log_debug("Copying tree \"%s\" to \"%s\".", resolved
, i
->path
);
1163 r
= copy_tree(resolved
, i
->path
, false);
1165 if (r
== -EROFS
&& stat(i
->path
, &st
) == 0)
1172 return log_error_errno(r
, "Failed to copy files to %s: %m", i
->path
);
1174 if (stat(resolved
, &a
) < 0)
1175 return log_error_errno(errno
, "stat(%s) failed: %m", resolved
);
1177 if (stat(i
->path
, &b
) < 0)
1178 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1180 if ((a
.st_mode
^ b
.st_mode
) & S_IFMT
) {
1181 log_debug("Can't copy to %s, file exists already and is of different type", i
->path
);
1186 r
= path_set_perms(i
, i
->path
);
1193 r
= glob_item(i
, write_one_file
, false);
1199 case CREATE_DIRECTORY
:
1200 case TRUNCATE_DIRECTORY
:
1201 case CREATE_SUBVOLUME
:
1203 RUN_WITH_UMASK(0000)
1204 mkdir_parents_label(i
->path
, 0755);
1206 if (i
->type
== CREATE_SUBVOLUME
)
1207 RUN_WITH_UMASK((~i
->mode
) & 0777) {
1208 r
= btrfs_subvol_make(i
->path
);
1209 log_debug_errno(r
, "Creating subvolume \"%s\": %m", i
->path
);
1214 if (IN_SET(i
->type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
) || r
== -ENOTTY
)
1215 RUN_WITH_UMASK(0000)
1216 r
= mkdir_label(i
->path
, i
->mode
);
1221 if (r
!= -EEXIST
&& r
!= -EROFS
)
1222 return log_error_errno(r
, "Failed to create directory or subvolume \"%s\": %m", i
->path
);
1224 k
= is_dir(i
->path
, false);
1225 if (k
== -ENOENT
&& r
== -EROFS
)
1226 return log_error_errno(r
, "%s does not exist and cannot be created as the file system is read-only.", i
->path
);
1228 return log_error_errno(k
, "Failed to check if %s exists: %m", i
->path
);
1230 log_warning("\"%s\" already exists and is not a directory.", i
->path
);
1234 creation
= CREATION_EXISTING
;
1236 creation
= CREATION_NORMAL
;
1238 log_debug("%s directory \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1240 r
= path_set_perms(i
, i
->path
);
1248 RUN_WITH_UMASK(0000) {
1249 mac_selinux_create_file_prepare(i
->path
, S_IFIFO
);
1250 r
= mkfifo(i
->path
, i
->mode
);
1251 mac_selinux_create_file_clear();
1255 if (errno
!= EEXIST
)
1256 return log_error_errno(errno
, "Failed to create fifo %s: %m", i
->path
);
1258 if (lstat(i
->path
, &st
) < 0)
1259 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1261 if (!S_ISFIFO(st
.st_mode
)) {
1264 RUN_WITH_UMASK(0000) {
1265 mac_selinux_create_file_prepare(i
->path
, S_IFIFO
);
1266 r
= mkfifo_atomic(i
->path
, i
->mode
);
1267 mac_selinux_create_file_clear();
1271 return log_error_errno(r
, "Failed to create fifo %s: %m", i
->path
);
1272 creation
= CREATION_FORCE
;
1274 log_warning("\"%s\" already exists and is not a fifo.", i
->path
);
1278 creation
= CREATION_EXISTING
;
1280 creation
= CREATION_NORMAL
;
1281 log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1283 r
= path_set_perms(i
, i
->path
);
1290 case CREATE_SYMLINK
: {
1291 r
= specifier_printf(i
->argument
, specifier_table
, NULL
, &resolved
);
1293 return log_error_errno(r
, "Failed to substitute specifiers in symlink target %s: %m", i
->argument
);
1295 mac_selinux_create_file_prepare(i
->path
, S_IFLNK
);
1296 r
= symlink(resolved
, i
->path
);
1297 mac_selinux_create_file_clear();
1300 _cleanup_free_
char *x
= NULL
;
1302 if (errno
!= EEXIST
)
1303 return log_error_errno(errno
, "symlink(%s, %s) failed: %m", resolved
, i
->path
);
1305 r
= readlink_malloc(i
->path
, &x
);
1306 if (r
< 0 || !streq(resolved
, x
)) {
1309 mac_selinux_create_file_prepare(i
->path
, S_IFLNK
);
1310 r
= symlink_atomic(resolved
, i
->path
);
1311 mac_selinux_create_file_clear();
1314 return log_error_errno(r
, "symlink(%s, %s) failed: %m", resolved
, i
->path
);
1316 creation
= CREATION_FORCE
;
1318 log_debug("\"%s\" is not a symlink or does not point to the correct path.", i
->path
);
1322 creation
= CREATION_EXISTING
;
1325 creation
= CREATION_NORMAL
;
1326 log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1330 case CREATE_BLOCK_DEVICE
:
1331 case CREATE_CHAR_DEVICE
: {
1334 if (have_effective_cap(CAP_MKNOD
) == 0) {
1335 /* In a container we lack CAP_MKNOD. We
1336 shouldn't attempt to create the device node in
1337 that case to avoid noise, and we don't support
1338 virtualized devices in containers anyway. */
1340 log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i
->path
);
1344 file_type
= i
->type
== CREATE_BLOCK_DEVICE
? S_IFBLK
: S_IFCHR
;
1346 RUN_WITH_UMASK(0000) {
1347 mac_selinux_create_file_prepare(i
->path
, file_type
);
1348 r
= mknod(i
->path
, i
->mode
| file_type
, i
->major_minor
);
1349 mac_selinux_create_file_clear();
1353 if (errno
== EPERM
) {
1354 log_debug("We lack permissions, possibly because of cgroup configuration; "
1355 "skipping creation of device node %s.", i
->path
);
1359 if (errno
!= EEXIST
)
1360 return log_error_errno(errno
, "Failed to create device node %s: %m", i
->path
);
1362 if (lstat(i
->path
, &st
) < 0)
1363 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1365 if ((st
.st_mode
& S_IFMT
) != file_type
) {
1369 RUN_WITH_UMASK(0000) {
1370 mac_selinux_create_file_prepare(i
->path
, file_type
);
1371 r
= mknod_atomic(i
->path
, i
->mode
| file_type
, i
->major_minor
);
1372 mac_selinux_create_file_clear();
1376 return log_error_errno(r
, "Failed to create device node \"%s\": %m", i
->path
);
1377 creation
= CREATION_FORCE
;
1379 log_debug("%s is not a device node.", i
->path
);
1383 creation
= CREATION_EXISTING
;
1385 creation
= CREATION_NORMAL
;
1387 log_debug("%s %s device node \"%s\" %u:%u.",
1388 creation_mode_verb_to_string(creation
),
1389 i
->type
== CREATE_BLOCK_DEVICE
? "block" : "char",
1390 i
->path
, major(i
->mode
), minor(i
->mode
));
1392 r
= path_set_perms(i
, i
->path
);
1401 r
= glob_item(i
, path_set_perms
, false);
1406 case RECURSIVE_RELABEL_PATH
:
1407 r
= glob_item(i
, path_set_perms
, true);
1413 r
= glob_item(i
, path_set_xattrs
, false);
1418 case RECURSIVE_SET_XATTR
:
1419 r
= glob_item(i
, path_set_xattrs
, true);
1425 r
= glob_item(i
, path_set_acls
, false);
1430 case RECURSIVE_SET_ACL
:
1431 r
= glob_item(i
, path_set_acls
, true);
1437 r
= glob_item(i
, path_set_attribute
, false);
1442 case RECURSIVE_SET_ATTRIBUTE
:
1443 r
= glob_item(i
, path_set_attribute
, true);
1452 static int remove_item_instance(Item
*i
, const char *instance
) {
1460 if (remove(instance
) < 0 && errno
!= ENOENT
)
1461 return log_error_errno(errno
, "rm(%s): %m", instance
);
1465 case TRUNCATE_DIRECTORY
:
1466 case RECURSIVE_REMOVE_PATH
:
1467 /* FIXME: we probably should use dir_cleanup() here
1468 * instead of rm_rf() so that 'x' is honoured. */
1469 log_debug("rm -rf \"%s\"", instance
);
1470 r
= rm_rf(instance
, (i
->type
== RECURSIVE_REMOVE_PATH
? REMOVE_ROOT
|REMOVE_SUBVOLUME
: 0) | REMOVE_PHYSICAL
);
1471 if (r
< 0 && r
!= -ENOENT
)
1472 return log_error_errno(r
, "rm_rf(%s): %m", instance
);
1477 assert_not_reached("wut?");
1483 static int remove_item(Item
*i
) {
1488 log_debug("Running remove action for entry %c %s", (char) i
->type
, i
->path
);
1494 case CREATE_DIRECTORY
:
1495 case CREATE_SUBVOLUME
:
1497 case CREATE_SYMLINK
:
1498 case CREATE_CHAR_DEVICE
:
1499 case CREATE_BLOCK_DEVICE
:
1501 case IGNORE_DIRECTORY_PATH
:
1504 case RECURSIVE_RELABEL_PATH
:
1508 case RECURSIVE_SET_XATTR
:
1510 case RECURSIVE_SET_ACL
:
1512 case RECURSIVE_SET_ATTRIBUTE
:
1516 case TRUNCATE_DIRECTORY
:
1517 case RECURSIVE_REMOVE_PATH
:
1518 r
= glob_item(i
, remove_item_instance
, false);
1525 static int clean_item_instance(Item
*i
, const char* instance
) {
1526 _cleanup_closedir_
DIR *d
= NULL
;
1530 char timestamp
[FORMAT_TIMESTAMP_MAX
];
1537 n
= now(CLOCK_REALTIME
);
1541 cutoff
= n
- i
->age
;
1543 d
= opendir_nomod(instance
);
1545 if (errno
== ENOENT
|| errno
== ENOTDIR
) {
1546 log_debug_errno(errno
, "Directory \"%s\": %m", instance
);
1550 log_error_errno(errno
, "Failed to open directory %s: %m", instance
);
1554 if (fstat(dirfd(d
), &s
) < 0)
1555 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1557 if (!S_ISDIR(s
.st_mode
)) {
1558 log_error("%s is not a directory.", i
->path
);
1562 if (fstatat(dirfd(d
), "..", &ps
, AT_SYMLINK_NOFOLLOW
) != 0)
1563 return log_error_errno(errno
, "stat(%s/..) failed: %m", i
->path
);
1565 mountpoint
= s
.st_dev
!= ps
.st_dev
||
1566 (s
.st_dev
== ps
.st_dev
&& s
.st_ino
== ps
.st_ino
);
1568 log_debug("Cleanup threshold for %s \"%s\" is %s",
1569 mountpoint
? "mount point" : "directory",
1571 format_timestamp_us(timestamp
, sizeof(timestamp
), cutoff
));
1573 return dir_cleanup(i
, instance
, d
, &s
, cutoff
, s
.st_dev
, mountpoint
,
1574 MAX_DEPTH
, i
->keep_first_level
);
1577 static int clean_item(Item
*i
) {
1582 log_debug("Running clean action for entry %c %s", (char) i
->type
, i
->path
);
1585 case CREATE_DIRECTORY
:
1586 case CREATE_SUBVOLUME
:
1587 case TRUNCATE_DIRECTORY
:
1590 clean_item_instance(i
, i
->path
);
1592 case IGNORE_DIRECTORY_PATH
:
1593 r
= glob_item(i
, clean_item_instance
, false);
1602 static int process_item_array(ItemArray
*array
);
1604 static int process_item(Item
*i
) {
1606 _cleanup_free_
char *prefix
= NULL
;
1615 prefix
= malloc(strlen(i
->path
) + 1);
1619 PATH_FOREACH_PREFIX(prefix
, i
->path
) {
1622 j
= ordered_hashmap_get(items
, prefix
);
1626 s
= process_item_array(j
);
1627 if (s
< 0 && t
== 0)
1632 r
= arg_create
? create_item(i
) : 0;
1633 q
= arg_remove
? remove_item(i
) : 0;
1634 p
= arg_clean
? clean_item(i
) : 0;
1642 static int process_item_array(ItemArray
*array
) {
1648 for (n
= 0; n
< array
->count
; n
++) {
1649 k
= process_item(array
->items
+ n
);
1650 if (k
< 0 && r
== 0)
1657 static void item_free_contents(Item
*i
) {
1661 strv_free(i
->xattrs
);
1664 acl_free(i
->acl_access
);
1665 acl_free(i
->acl_default
);
1669 static void item_array_free(ItemArray
*a
) {
1675 for (n
= 0; n
< a
->count
; n
++)
1676 item_free_contents(a
->items
+ n
);
1681 static int item_compare(const void *a
, const void *b
) {
1682 const Item
*x
= a
, *y
= b
;
1684 /* Make sure that the ownership taking item is put first, so
1685 * that we first create the node, and then can adjust it */
1687 if (takes_ownership(x
->type
) && !takes_ownership(y
->type
))
1689 if (!takes_ownership(x
->type
) && takes_ownership(y
->type
))
1692 return (int) x
->type
- (int) y
->type
;
1695 static bool item_compatible(Item
*a
, Item
*b
) {
1698 assert(streq(a
->path
, b
->path
));
1700 if (takes_ownership(a
->type
) && takes_ownership(b
->type
))
1701 /* check if the items are the same */
1702 return streq_ptr(a
->argument
, b
->argument
) &&
1704 a
->uid_set
== b
->uid_set
&&
1707 a
->gid_set
== b
->gid_set
&&
1710 a
->mode_set
== b
->mode_set
&&
1711 a
->mode
== b
->mode
&&
1713 a
->age_set
== b
->age_set
&&
1716 a
->mask_perms
== b
->mask_perms
&&
1718 a
->keep_first_level
== b
->keep_first_level
&&
1720 a
->major_minor
== b
->major_minor
;
1725 static bool should_include_path(const char *path
) {
1728 STRV_FOREACH(prefix
, arg_exclude_prefixes
)
1729 if (path_startswith(path
, *prefix
)) {
1730 log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.",
1735 STRV_FOREACH(prefix
, arg_include_prefixes
)
1736 if (path_startswith(path
, *prefix
)) {
1737 log_debug("Entry \"%s\" matches include prefix \"%s\".", path
, *prefix
);
1741 /* no matches, so we should include this path only if we
1742 * have no whitelist at all */
1743 if (strv_length(arg_include_prefixes
) == 0)
1746 log_debug("Entry \"%s\" does not match any include prefix, skipping.", path
);
1750 static int parse_line(const char *fname
, unsigned line
, const char *buffer
) {
1752 _cleanup_free_
char *action
= NULL
, *mode
= NULL
, *user
= NULL
, *group
= NULL
, *age
= NULL
, *path
= NULL
;
1753 _cleanup_(item_free_contents
) Item i
= {};
1754 ItemArray
*existing
;
1757 bool force
= false, boot
= false;
1763 r
= unquote_many_words(
1774 return log_error_errno(r
, "[%s:%u] Failed to parse line: %m", fname
, line
);
1776 log_error("[%s:%u] Syntax error.", fname
, line
);
1780 if (!isempty(buffer
) && !streq(buffer
, "-")) {
1781 i
.argument
= strdup(buffer
);
1786 if (isempty(action
)) {
1787 log_error("[%s:%u] Command too short '%s'.", fname
, line
, action
);
1791 for (pos
= 1; action
[pos
]; pos
++) {
1792 if (action
[pos
] == '!' && !boot
)
1794 else if (action
[pos
] == '+' && !force
)
1797 log_error("[%s:%u] Unknown modifiers in command '%s'",
1798 fname
, line
, action
);
1803 if (boot
&& !arg_boot
) {
1804 log_debug("Ignoring entry %s \"%s\" because --boot is not specified.",
1812 r
= specifier_printf(path
, specifier_table
, NULL
, &i
.path
);
1814 log_error("[%s:%u] Failed to replace specifiers: %s", fname
, line
, path
);
1820 case CREATE_DIRECTORY
:
1821 case CREATE_SUBVOLUME
:
1822 case TRUNCATE_DIRECTORY
:
1825 case IGNORE_DIRECTORY_PATH
:
1827 case RECURSIVE_REMOVE_PATH
:
1830 case RECURSIVE_RELABEL_PATH
:
1832 log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname
, line
, i
.type
);
1840 case CREATE_SYMLINK
:
1842 i
.argument
= strappend("/usr/share/factory/", i
.path
);
1850 log_error("[%s:%u] Write file requires argument.", fname
, line
);
1857 i
.argument
= strappend("/usr/share/factory/", i
.path
);
1860 } else if (!path_is_absolute(i
.argument
)) {
1861 log_error("[%s:%u] Source path is not absolute.", fname
, line
);
1865 path_kill_slashes(i
.argument
);
1868 case CREATE_CHAR_DEVICE
:
1869 case CREATE_BLOCK_DEVICE
: {
1870 unsigned major
, minor
;
1873 log_error("[%s:%u] Device file requires argument.", fname
, line
);
1877 if (sscanf(i
.argument
, "%u:%u", &major
, &minor
) != 2) {
1878 log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname
, line
, i
.argument
);
1882 i
.major_minor
= makedev(major
, minor
);
1887 case RECURSIVE_SET_XATTR
:
1889 log_error("[%s:%u] Set extended attribute requires argument.", fname
, line
);
1892 r
= parse_xattrs_from_arg(&i
);
1898 case RECURSIVE_SET_ACL
:
1900 log_error("[%s:%u] Set ACLs requires argument.", fname
, line
);
1903 r
= parse_acls_from_arg(&i
);
1909 case RECURSIVE_SET_ATTRIBUTE
:
1911 log_error("[%s:%u] Set file attribute requires argument.", fname
, line
);
1914 r
= parse_attribute_from_arg(&i
);
1920 log_error("[%s:%u] Unknown command type '%c'.", fname
, line
, (char) i
.type
);
1924 if (!path_is_absolute(i
.path
)) {
1925 log_error("[%s:%u] Path '%s' not absolute.", fname
, line
, i
.path
);
1929 path_kill_slashes(i
.path
);
1931 if (!should_include_path(i
.path
))
1937 p
= prefix_root(arg_root
, i
.path
);
1945 if (!isempty(user
) && !streq(user
, "-")) {
1946 const char *u
= user
;
1948 r
= get_user_creds(&u
, &i
.uid
, NULL
, NULL
, NULL
);
1950 log_error("[%s:%u] Unknown user '%s'.", fname
, line
, user
);
1957 if (!isempty(group
) && !streq(group
, "-")) {
1958 const char *g
= group
;
1960 r
= get_group_creds(&g
, &i
.gid
);
1962 log_error("[%s:%u] Unknown group '%s'.", fname
, line
, group
);
1969 if (!isempty(mode
) && !streq(mode
, "-")) {
1970 const char *mm
= mode
;
1974 i
.mask_perms
= true;
1978 if (parse_mode(mm
, &m
) < 0) {
1979 log_error("[%s:%u] Invalid mode '%s'.", fname
, line
, mode
);
1986 i
.mode
= IN_SET(i
.type
, CREATE_DIRECTORY
, CREATE_SUBVOLUME
, TRUNCATE_DIRECTORY
)
1989 if (!isempty(age
) && !streq(age
, "-")) {
1990 const char *a
= age
;
1993 i
.keep_first_level
= true;
1997 if (parse_sec(a
, &i
.age
) < 0) {
1998 log_error("[%s:%u] Invalid age '%s'.", fname
, line
, age
);
2005 h
= needs_glob(i
.type
) ? globs
: items
;
2007 existing
= ordered_hashmap_get(h
, i
.path
);
2011 for (n
= 0; n
< existing
->count
; n
++) {
2012 if (!item_compatible(existing
->items
+ n
, &i
)) {
2013 log_warning("[%s:%u] Duplicate line for path \"%s\", ignoring.",
2014 fname
, line
, i
.path
);
2019 existing
= new0(ItemArray
, 1);
2020 r
= ordered_hashmap_put(h
, i
.path
, existing
);
2025 if (!GREEDY_REALLOC(existing
->items
, existing
->size
, existing
->count
+ 1))
2028 memcpy(existing
->items
+ existing
->count
++, &i
, sizeof(i
));
2030 /* Sort item array, to enforce stable ordering of application */
2031 qsort_safe(existing
->items
, existing
->count
, sizeof(Item
), item_compare
);
2037 static void help(void) {
2038 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
2039 "Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
2040 " -h --help Show this help\n"
2041 " --version Show package version\n"
2042 " --create Create marked files/directories\n"
2043 " --clean Clean up marked directories\n"
2044 " --remove Remove marked files/directories\n"
2045 " --boot Execute actions only safe at boot\n"
2046 " --prefix=PATH Only apply rules with the specified prefix\n"
2047 " --exclude-prefix=PATH Ignore rules with the specified prefix\n"
2048 " --root=PATH Operate on an alternate filesystem root\n",
2049 program_invocation_short_name
);
2052 static int parse_argv(int argc
, char *argv
[]) {
2055 ARG_VERSION
= 0x100,
2065 static const struct option options
[] = {
2066 { "help", no_argument
, NULL
, 'h' },
2067 { "version", no_argument
, NULL
, ARG_VERSION
},
2068 { "create", no_argument
, NULL
, ARG_CREATE
},
2069 { "clean", no_argument
, NULL
, ARG_CLEAN
},
2070 { "remove", no_argument
, NULL
, ARG_REMOVE
},
2071 { "boot", no_argument
, NULL
, ARG_BOOT
},
2072 { "prefix", required_argument
, NULL
, ARG_PREFIX
},
2073 { "exclude-prefix", required_argument
, NULL
, ARG_EXCLUDE_PREFIX
},
2074 { "root", required_argument
, NULL
, ARG_ROOT
},
2083 while ((c
= getopt_long(argc
, argv
, "h", options
, NULL
)) >= 0)
2092 puts(PACKAGE_STRING
);
2093 puts(SYSTEMD_FEATURES
);
2113 if (strv_push(&arg_include_prefixes
, optarg
) < 0)
2117 case ARG_EXCLUDE_PREFIX
:
2118 if (strv_push(&arg_exclude_prefixes
, optarg
) < 0)
2124 arg_root
= path_make_absolute_cwd(optarg
);
2128 path_kill_slashes(arg_root
);
2135 assert_not_reached("Unhandled option");
2138 if (!arg_clean
&& !arg_create
&& !arg_remove
) {
2139 log_error("You need to specify at least one of --clean, --create or --remove.");
2146 static int read_config_file(const char *fn
, bool ignore_enoent
) {
2147 _cleanup_fclose_
FILE *f
= NULL
;
2148 char line
[LINE_MAX
];
2156 r
= search_and_fopen_nulstr(fn
, "re", arg_root
, conf_file_dirs
, &f
);
2158 if (ignore_enoent
&& r
== -ENOENT
) {
2159 log_debug_errno(r
, "Failed to open \"%s\": %m", fn
);
2163 return log_error_errno(r
, "Failed to open '%s', ignoring: %m", fn
);
2165 log_debug("Reading config file \"%s\".", fn
);
2167 FOREACH_LINE(line
, f
, break) {
2174 if (*l
== '#' || *l
== 0)
2177 k
= parse_line(fn
, v
, l
);
2178 if (k
< 0 && r
== 0)
2182 /* we have to determine age parameter for each entry of type X */
2183 ORDERED_HASHMAP_FOREACH(i
, globs
, iterator
) {
2185 Item
*j
, *candidate_item
= NULL
;
2187 if (i
->type
!= IGNORE_DIRECTORY_PATH
)
2190 ORDERED_HASHMAP_FOREACH(j
, items
, iter
) {
2191 if (j
->type
!= CREATE_DIRECTORY
&& j
->type
!= TRUNCATE_DIRECTORY
&& j
->type
!= CREATE_SUBVOLUME
)
2194 if (path_equal(j
->path
, i
->path
)) {
2199 if ((!candidate_item
&& path_startswith(i
->path
, j
->path
)) ||
2200 (candidate_item
&& path_startswith(j
->path
, candidate_item
->path
) && (fnmatch(i
->path
, j
->path
, FNM_PATHNAME
| FNM_PERIOD
) == 0)))
2204 if (candidate_item
&& candidate_item
->age_set
) {
2205 i
->age
= candidate_item
->age
;
2211 log_error_errno(errno
, "Failed to read from file %s: %m", fn
);
2219 int main(int argc
, char *argv
[]) {
2224 r
= parse_argv(argc
, argv
);
2228 log_set_target(LOG_TARGET_AUTO
);
2229 log_parse_environment();
2234 mac_selinux_init(NULL
);
2236 items
= ordered_hashmap_new(&string_hash_ops
);
2237 globs
= ordered_hashmap_new(&string_hash_ops
);
2239 if (!items
|| !globs
) {
2246 if (optind
< argc
) {
2249 for (j
= optind
; j
< argc
; j
++) {
2250 k
= read_config_file(argv
[j
], false);
2251 if (k
< 0 && r
== 0)
2256 _cleanup_strv_free_
char **files
= NULL
;
2259 r
= conf_files_list_nulstr(&files
, ".conf", arg_root
, conf_file_dirs
);
2261 log_error_errno(r
, "Failed to enumerate tmpfiles.d files: %m");
2265 STRV_FOREACH(f
, files
) {
2266 k
= read_config_file(*f
, true);
2267 if (k
< 0 && r
== 0)
2272 /* The non-globbing ones usually create things, hence we apply
2274 ORDERED_HASHMAP_FOREACH(a
, items
, iterator
) {
2275 k
= process_item_array(a
);
2276 if (k
< 0 && r
== 0)
2280 /* The globbing ones usually alter things, hence we apply them
2282 ORDERED_HASHMAP_FOREACH(a
, globs
, iterator
) {
2283 k
= process_item_array(a
);
2284 if (k
< 0 && r
== 0)
2289 while ((a
= ordered_hashmap_steal_first(items
)))
2292 while ((a
= ordered_hashmap_steal_first(globs
)))
2295 ordered_hashmap_free(items
);
2296 ordered_hashmap_free(globs
);
2298 free(arg_include_prefixes
);
2299 free(arg_exclude_prefixes
);
2302 set_free_free(unix_sockets
);
2304 mac_selinux_finish();
2306 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;