1 /* SPDX-License-Identifier: LGPL-2.1+ */
5 #include <linux/magic.h>
6 #include <openssl/pem.h>
12 #include "btrfs-util.h"
13 #include "bus-common-errors.h"
14 #include "bus-error.h"
15 #include "bus-polkit.h"
16 #include "clean-ipc.h"
17 #include "conf-files.h"
18 #include "device-util.h"
19 #include "dirent-util.h"
22 #include "format-util.h"
25 #include "home-util.h"
26 #include "homed-home-bus.h"
27 #include "homed-home.h"
28 #include "homed-manager-bus.h"
29 #include "homed-manager.h"
30 #include "homed-varlink.h"
33 #include "process-util.h"
34 #include "quota-util.h"
35 #include "random-util.h"
36 #include "socket-util.h"
37 #include "stat-util.h"
39 #include "tmpfile-util.h"
40 #include "udev-util.h"
41 #include "user-record-sign.h"
42 #include "user-record-util.h"
43 #include "user-record.h"
44 #include "user-util.h"
46 /* Where to look for private/public keys that are used to sign the user records. We are not using
47 * CONF_PATHS_NULSTR() here since we want to insert /var/lib/systemd/home/ in the middle. And we insert that
48 * since we want to auto-generate a persistent private/public key pair if we need to. */
49 #define KEY_PATHS_NULSTR \
50 "/etc/systemd/home/\0" \
51 "/run/systemd/home/\0" \
52 "/var/lib/systemd/home/\0" \
53 "/usr/local/lib/systemd/home/\0" \
54 "/usr/lib/systemd/home/\0"
56 static bool uid_is_home(uid_t uid
) {
57 return uid
>= HOME_UID_MIN
&& uid
<= HOME_UID_MAX
;
59 /* Takes a value generated randomly or by hashing and turns it into a UID in the right range */
61 #define UID_CLAMP_INTO_HOME_RANGE(rnd) (((uid_t) (rnd) % (HOME_UID_MAX - HOME_UID_MIN + 1)) + HOME_UID_MIN)
63 DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(homes_by_uid_hash_ops
, void, trivial_hash_func
, trivial_compare_func
, Home
, home_free
);
64 DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(homes_by_name_hash_ops
, char, string_hash_func
, string_compare_func
, Home
, home_free
);
65 DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(homes_by_worker_pid_hash_ops
, void, trivial_hash_func
, trivial_compare_func
, Home
, home_free
);
66 DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(homes_by_sysfs_hash_ops
, char, path_hash_func
, path_compare
, Home
, home_free
);
68 static int on_home_inotify(sd_event_source
*s
, const struct inotify_event
*event
, void *userdata
);
69 static int manager_gc_images(Manager
*m
);
70 static int manager_enumerate_images(Manager
*m
);
71 static int manager_assess_image(Manager
*m
, int dir_fd
, const char *dir_path
, const char *dentry_name
);
72 static void manager_revalidate_image(Manager
*m
, Home
*h
);
74 static void manager_watch_home(Manager
*m
) {
80 m
->inotify_event_source
= sd_event_source_unref(m
->inotify_event_source
);
81 m
->scan_slash_home
= false;
83 if (statfs("/home/", &sfs
) < 0) {
84 log_full_errno(errno
== ENOENT
? LOG_DEBUG
: LOG_WARNING
, errno
,
85 "Failed to statfs() /home/ directory, disabling automatic scanning.");
89 if (is_network_fs(&sfs
)) {
90 log_info("/home/ is a network file system, disabling automatic scanning.");
94 if (is_fs_type(&sfs
, AUTOFS_SUPER_MAGIC
)) {
95 log_info("/home/ is on autofs, disabling automatic scanning.");
99 m
->scan_slash_home
= true;
101 r
= sd_event_add_inotify(m
->event
, &m
->inotify_event_source
, "/home/", IN_CREATE
|IN_CLOSE_WRITE
|IN_DELETE_SELF
|IN_MOVE_SELF
|IN_ONLYDIR
|IN_MOVED_TO
|IN_MOVED_FROM
|IN_DELETE
, on_home_inotify
, m
);
103 log_full_errno(r
== -ENOENT
? LOG_DEBUG
: LOG_WARNING
, r
,
104 "Failed to create inotify watch on /home/, ignoring.");
106 (void) sd_event_source_set_description(m
->inotify_event_source
, "home-inotify");
109 static int on_home_inotify(sd_event_source
*s
, const struct inotify_event
*event
, void *userdata
) {
110 Manager
*m
= userdata
;
116 if ((event
->mask
& (IN_Q_OVERFLOW
|IN_MOVE_SELF
|IN_DELETE_SELF
|IN_IGNORED
|IN_UNMOUNT
)) != 0) {
118 if (FLAGS_SET(event
->mask
, IN_Q_OVERFLOW
))
119 log_debug("/home/ inotify queue overflow, rescanning.");
120 else if (FLAGS_SET(event
->mask
, IN_MOVE_SELF
))
121 log_info("/home/ moved or renamed, recreating watch and rescanning.");
122 else if (FLAGS_SET(event
->mask
, IN_DELETE_SELF
))
123 log_info("/home/ deleted, recreating watch and rescanning.");
124 else if (FLAGS_SET(event
->mask
, IN_UNMOUNT
))
125 log_info("/home/ unmounted, recreating watch and rescanning.");
126 else if (FLAGS_SET(event
->mask
, IN_IGNORED
))
127 log_info("/home/ watch invalidated, recreating watch and rescanning.");
129 manager_watch_home(m
);
130 (void) manager_gc_images(m
);
131 (void) manager_enumerate_images(m
);
132 (void) bus_manager_emit_auto_login_changed(m
);
136 /* For the other inotify events, let's ignore all events for file names that don't match our
138 if (isempty(event
->name
))
140 e
= endswith(event
->name
, FLAGS_SET(event
->mask
, IN_ISDIR
) ? ".homedir" : ".home");
144 n
= strndupa(event
->name
, e
- event
->name
);
145 if (!suitable_user_name(n
))
148 if ((event
->mask
& (IN_CREATE
|IN_CLOSE_WRITE
|IN_MOVED_TO
)) != 0) {
149 if (FLAGS_SET(event
->mask
, IN_CREATE
))
150 log_debug("/home/%s has been created, having a look.", event
->name
);
151 else if (FLAGS_SET(event
->mask
, IN_CLOSE_WRITE
))
152 log_debug("/home/%s has been modified, having a look.", event
->name
);
153 else if (FLAGS_SET(event
->mask
, IN_MOVED_TO
))
154 log_debug("/home/%s has been moved in, having a look.", event
->name
);
156 (void) manager_assess_image(m
, -1, "/home/", event
->name
);
157 (void) bus_manager_emit_auto_login_changed(m
);
160 if ((event
->mask
& (IN_DELETE
|IN_MOVED_FROM
|IN_DELETE
)) != 0) {
163 if (FLAGS_SET(event
->mask
, IN_DELETE
))
164 log_debug("/home/%s has been deleted, revalidating.", event
->name
);
165 else if (FLAGS_SET(event
->mask
, IN_CLOSE_WRITE
))
166 log_debug("/home/%s has been closed after writing, revalidating.", event
->name
);
167 else if (FLAGS_SET(event
->mask
, IN_MOVED_FROM
))
168 log_debug("/home/%s has been moved away, revalidating.", event
->name
);
170 h
= hashmap_get(m
->homes_by_name
, n
);
172 manager_revalidate_image(m
, h
);
173 (void) bus_manager_emit_auto_login_changed(m
);
180 int manager_new(Manager
**ret
) {
181 _cleanup_(manager_freep
) Manager
*m
= NULL
;
186 m
= new0(Manager
, 1);
190 r
= sd_event_default(&m
->event
);
194 r
= sd_event_add_signal(m
->event
, NULL
, SIGINT
, NULL
, NULL
);
198 r
= sd_event_add_signal(m
->event
, NULL
, SIGTERM
, NULL
, NULL
);
202 (void) sd_event_set_watchdog(m
->event
, true);
204 m
->homes_by_uid
= hashmap_new(&homes_by_uid_hash_ops
);
205 if (!m
->homes_by_uid
)
208 m
->homes_by_name
= hashmap_new(&homes_by_name_hash_ops
);
209 if (!m
->homes_by_name
)
212 m
->homes_by_worker_pid
= hashmap_new(&homes_by_worker_pid_hash_ops
);
213 if (!m
->homes_by_worker_pid
)
216 m
->homes_by_sysfs
= hashmap_new(&homes_by_sysfs_hash_ops
);
217 if (!m
->homes_by_sysfs
)
224 Manager
* manager_free(Manager
*m
) {
227 hashmap_free(m
->homes_by_uid
);
228 hashmap_free(m
->homes_by_name
);
229 hashmap_free(m
->homes_by_worker_pid
);
230 hashmap_free(m
->homes_by_sysfs
);
232 m
->inotify_event_source
= sd_event_source_unref(m
->inotify_event_source
);
234 bus_verify_polkit_async_registry_free(m
->polkit_registry
);
236 sd_bus_flush_close_unref(m
->bus
);
237 sd_event_unref(m
->event
);
239 m
->notify_socket_event_source
= sd_event_source_unref(m
->notify_socket_event_source
);
240 m
->device_monitor
= sd_device_monitor_unref(m
->device_monitor
);
242 m
->deferred_rescan_event_source
= sd_event_source_unref(m
->deferred_rescan_event_source
);
243 m
->deferred_gc_event_source
= sd_event_source_unref(m
->deferred_gc_event_source
);
244 m
->deferred_auto_login_event_source
= sd_event_source_unref(m
->deferred_auto_login_event_source
);
247 EVP_PKEY_free(m
->private_key
);
249 hashmap_free(m
->public_keys
);
251 varlink_server_unref(m
->varlink_server
);
256 int manager_verify_user_record(Manager
*m
, UserRecord
*hr
) {
264 if (!m
->private_key
&& hashmap_isempty(m
->public_keys
)) {
265 r
= user_record_has_signature(hr
);
269 return r
? -ENOKEY
: USER_RECORD_UNSIGNED
;
273 if (m
->private_key
) {
274 r
= user_record_verify(hr
, m
->private_key
);
277 case USER_RECORD_FOREIGN
:
278 /* This record is not signed by this key, but let's see below */
281 case USER_RECORD_SIGNED
: /* Signed by us, but also by others, let's propagate that */
282 case USER_RECORD_SIGNED_EXCLUSIVE
: /* Signed by us, and nothing else, ditto */
283 case USER_RECORD_UNSIGNED
: /* Not signed at all, ditto */
289 HASHMAP_FOREACH(pkey
, m
->public_keys
, i
) {
290 r
= user_record_verify(hr
, pkey
);
293 case USER_RECORD_FOREIGN
:
294 /* This record is not signed by this key, but let's see our other keys */
297 case USER_RECORD_SIGNED
: /* It's signed by this key we are happy with, but which is not our own. */
298 case USER_RECORD_SIGNED_EXCLUSIVE
:
299 return USER_RECORD_FOREIGN
;
301 case USER_RECORD_UNSIGNED
: /* It's not signed at all */
310 static int manager_add_home_by_record(
316 _cleanup_(json_variant_unrefp
) JsonVariant
*v
= NULL
;
317 _cleanup_(user_record_unrefp
) UserRecord
*hr
= NULL
;
318 unsigned line
, column
;
326 r
= json_parse_file_at(NULL
, dir_fd
, fname
, JSON_PARSE_SENSITIVE
, &v
, &line
, &column
);
328 return log_error_errno(r
, "Failed to parse identity record at %s:%u%u: %m", fname
, line
, column
);
330 hr
= user_record_new();
334 r
= user_record_load(hr
, v
, USER_RECORD_LOAD_REFUSE_SECRET
);
338 if (!streq_ptr(hr
->user_name
, name
))
339 return log_error_errno(SYNTHETIC_ERRNO(EINVAL
), "Identity's user name %s does not match file name %s, refusing.", hr
->user_name
, name
);
341 is_signed
= manager_verify_user_record(m
, hr
);
345 return log_warning_errno(is_signed
, "User record %s is not signed by any accepted key, ignoring.", fname
);
346 case USER_RECORD_UNSIGNED
:
347 return log_warning_errno(SYNTHETIC_ERRNO(EPERM
), "User record %s is not signed at all, ignoring.", fname
);
348 case USER_RECORD_SIGNED
:
349 log_info("User record %s is signed by us (and others), accepting.", fname
);
351 case USER_RECORD_SIGNED_EXCLUSIVE
:
352 log_info("User record %s is signed only by us, accepting.", fname
);
354 case USER_RECORD_FOREIGN
:
355 log_info("User record %s is signed by registered key from others, accepting.", fname
);
358 assert(is_signed
< 0);
359 return log_error_errno(is_signed
, "Failed to verify signature of user record in %s: %m", fname
);
362 h
= hashmap_get(m
->homes_by_name
, name
);
364 r
= home_set_record(h
, hr
);
366 return log_error_errno(r
, "Failed to update home record for %s: %m", name
);
368 /* If we acquired a record now for a previously unallocated entry, then reset the state. This
369 * makes sure home_get_state() will check for the availability of the image file dynamically
370 * in order to detect to distuingish HOME_INACTIVE and HOME_ABSENT. */
371 if (h
->state
== HOME_UNFIXATED
)
372 h
->state
= _HOME_STATE_INVALID
;
374 r
= home_new(m
, hr
, NULL
, &h
);
376 return log_error_errno(r
, "Failed to allocate new home object: %m");
378 log_info("Added registered home for user %s.", hr
->user_name
);
381 /* Only entries we exclusively signed are writable to us, hence remember the result */
382 h
->signed_locally
= is_signed
== USER_RECORD_SIGNED_EXCLUSIVE
;
387 static int manager_enumerate_records(Manager
*m
) {
388 _cleanup_closedir_
DIR *d
= NULL
;
393 d
= opendir("/var/lib/systemd/home/");
395 return log_full_errno(errno
== ENOENT
? LOG_DEBUG
: LOG_ERR
, errno
,
396 "Failed to open /var/lib/systemd/home/: %m");
398 FOREACH_DIRENT(de
, d
, return log_error_errno(errno
, "Failed to read record directory: %m")) {
399 _cleanup_free_
char *n
= NULL
;
402 if (!dirent_is_file(de
))
405 e
= endswith(de
->d_name
, ".identity");
409 n
= strndup(de
->d_name
, e
- de
->d_name
);
413 if (!suitable_user_name(n
))
416 (void) manager_add_home_by_record(m
, n
, dirfd(d
), de
->d_name
);
422 static int search_quota(uid_t uid
, const char *exclude_quota_path
) {
423 struct stat exclude_st
= {};
424 dev_t previous_devno
= 0;
428 /* Checks whether the specified UID owns any files on the files system, but ignore any file system
429 * backing the specified file. The file is used when operating on home directories, where it's OK if
430 * the UID of them already owns files. */
432 if (exclude_quota_path
&& stat(exclude_quota_path
, &exclude_st
) < 0) {
434 return log_warning_errno(errno
, "Failed to stat %s, ignoring: %m", exclude_quota_path
);
437 /* Check a few usual suspects where regular users might own files. Note that this is by no means
438 * comprehensive, but should cover most cases. Note that in an ideal world every user would be
439 * registered in NSS and avoid our own UID range, but for all other cases, it's a good idea to be
440 * paranoid and check quota if we can. */
441 FOREACH_STRING(where
, "/home/", "/tmp/", "/var/", "/var/mail/", "/var/tmp/", "/var/spool/") {
445 if (stat(where
, &st
) < 0) {
446 log_full_errno(errno
== ENOENT
? LOG_DEBUG
: LOG_ERR
, errno
,
447 "Failed to stat %s, ignoring: %m", where
);
451 if (major(st
.st_dev
) == 0) {
452 log_debug("Directory %s is not on a real block device, not checking quota for UID use.", where
);
456 if (st
.st_dev
== exclude_st
.st_dev
) { /* If an exclude path is specified, then ignore quota
457 * reported on the same block device as that path. */
458 log_debug("Directory %s is where the home directory is located, not checking quota for UID use.", where
);
462 if (st
.st_dev
== previous_devno
) { /* Does this directory have the same devno as the previous
463 * one we tested? If so, there's no point in testing this
465 log_debug("Directory %s is on same device as previous tested directory, not checking quota for UID use a second time.", where
);
469 previous_devno
= st
.st_dev
;
471 r
= quotactl_devno(QCMD_FIXED(Q_GETQUOTA
, USRQUOTA
), st
.st_dev
, uid
, &req
);
473 if (ERRNO_IS_NOT_SUPPORTED(r
))
474 log_debug_errno(r
, "No UID quota support on %s, ignoring.", where
);
476 log_warning_errno(r
, "Failed to query quota on %s, ignoring.", where
);
481 if ((FLAGS_SET(req
.dqb_valid
, QIF_SPACE
) && req
.dqb_curspace
> 0) ||
482 (FLAGS_SET(req
.dqb_valid
, QIF_INODES
) && req
.dqb_curinodes
> 0)) {
483 log_debug_errno(errno
, "Quota reports UID " UID_FMT
" occupies disk space on %s.", uid
, where
);
491 static int manager_acquire_uid(
494 const char *user_name
,
495 const char *exclude_quota_path
,
498 static const uint8_t hash_key
[] = {
499 0xa3, 0xb8, 0x82, 0x69, 0x9a, 0x71, 0xf7, 0xa9,
500 0xe0, 0x7c, 0xf6, 0xf1, 0x21, 0x69, 0xd2, 0x1e
507 } phase
= PHASE_SUGGESTED
;
509 unsigned n_tries
= 100;
526 case PHASE_SUGGESTED
:
527 phase
= PHASE_HASHED
;
529 if (!uid_is_home(start_uid
))
532 candidate
= start_uid
;
536 phase
= PHASE_RANDOM
;
541 candidate
= UID_CLAMP_INTO_HOME_RANGE(siphash24(user_name
, strlen(user_name
), hash_key
));
545 random_bytes(&candidate
, sizeof(candidate
));
546 candidate
= UID_CLAMP_INTO_HOME_RANGE(candidate
);
550 assert_not_reached("unknown phase");
553 other
= hashmap_get(m
->homes_by_uid
, UID_TO_PTR(candidate
));
555 log_debug("Candidate UID " UID_FMT
" already used by another home directory (%s), let's try another.", candidate
, other
->user_name
);
559 pw
= getpwuid(candidate
);
561 log_debug("Candidate UID " UID_FMT
" already registered by another user in NSS (%s), let's try another.", candidate
, pw
->pw_name
);
565 gr
= getgrgid((gid_t
) candidate
);
567 log_debug("Candidate UID " UID_FMT
" already registered by another group in NSS (%s), let's try another.", candidate
, gr
->gr_name
);
571 r
= search_ipc(candidate
, (gid_t
) candidate
);
575 log_debug_errno(r
, "Candidate UID " UID_FMT
" already owns IPC objects, let's try another: %m", candidate
);
579 r
= search_quota(candidate
, exclude_quota_path
);
588 static int manager_add_home_by_image(
590 const char *user_name
,
592 const char *image_path
,
597 _cleanup_(user_record_unrefp
) UserRecord
*hr
= NULL
;
607 assert(storage
>= 0);
608 assert(storage
< _USER_STORAGE_MAX
);
610 h
= hashmap_get(m
->homes_by_name
, user_name
);
614 if (h
->state
!= HOME_UNFIXATED
) {
615 log_debug("Found an image for user %s which already has a record, skipping.", user_name
);
616 return 0; /* ignore images that synthesize a user we already have a record for */
619 same
= user_record_storage(h
->record
) == storage
;
621 if (h
->sysfs
&& sysfs
)
622 same
= path_equal(h
->sysfs
, sysfs
);
623 else if (!!h
->sysfs
!= !!sysfs
)
628 p
= user_record_image_path(h
->record
);
629 same
= p
&& path_equal(p
, image_path
);
634 log_debug("Found a multiple images for a user '%s', ignoring image '%s'.", user_name
, image_path
);
638 /* Check NSS, in case there's another user or group by this name */
639 if (getpwnam(user_name
) || getgrnam(user_name
)) {
640 log_debug("Found an existing user or group by name '%s', ignoring image '%s'.", user_name
, image_path
);
645 if (h
&& uid_is_valid(h
->uid
))
648 r
= manager_acquire_uid(m
, start_uid
, user_name
, IN_SET(storage
, USER_SUBVOLUME
, USER_DIRECTORY
, USER_FSCRYPT
) ? image_path
: NULL
, &uid
);
650 return log_warning_errno(r
, "Failed to acquire unused UID for %s: %m", user_name
);
653 hr
= user_record_new();
657 r
= user_record_synthesize(hr
, user_name
, realm
, image_path
, storage
, uid
, (gid_t
) uid
);
659 return log_error_errno(r
, "Failed to synthesize home record for %s (image %s): %m", user_name
, image_path
);
662 r
= home_set_record(h
, hr
);
664 return log_error_errno(r
, "Failed to update home record for %s: %m", user_name
);
666 r
= home_new(m
, hr
, sysfs
, &h
);
668 return log_error_errno(r
, "Failed to allocate new home object: %m");
670 h
->state
= HOME_UNFIXATED
;
672 log_info("Discovered new home for user %s through image %s.", user_name
, image_path
);
678 int manager_augment_record_with_uid(
682 const char *exclude_quota_path
= NULL
;
683 uid_t start_uid
= UID_INVALID
, uid
;
689 if (uid_is_valid(hr
->uid
))
692 if (IN_SET(hr
->storage
, USER_CLASSIC
, USER_SUBVOLUME
, USER_DIRECTORY
, USER_FSCRYPT
)) {
695 ip
= user_record_image_path(hr
);
699 if (stat(ip
, &st
) < 0) {
701 log_warning_errno(errno
, "Failed to stat(%s): %m", ip
);
702 } else if (uid_is_home(st
.st_uid
)) {
703 start_uid
= st
.st_uid
;
704 exclude_quota_path
= ip
;
709 r
= manager_acquire_uid(m
, start_uid
, hr
->user_name
, exclude_quota_path
, &uid
);
713 log_debug("Acquired new UID " UID_FMT
" for %s.", uid
, hr
->user_name
);
715 r
= user_record_add_binding(
717 _USER_STORAGE_INVALID
,
735 static int manager_assess_image(
738 const char *dir_path
,
739 const char *dentry_name
) {
741 char *luks_suffix
, *directory_suffix
;
742 _cleanup_free_
char *path
= NULL
;
750 luks_suffix
= endswith(dentry_name
, ".home");
752 directory_suffix
= NULL
;
754 directory_suffix
= endswith(dentry_name
, ".homedir");
756 /* Early filter out: by name */
757 if (!luks_suffix
&& !directory_suffix
)
760 path
= path_join(dir_path
, dentry_name
);
764 /* Follow symlinks here, to allow people to link in stuff to make them available locally. */
766 r
= fstatat(dir_fd
, dentry_name
, &st
, 0);
770 return log_full_errno(errno
== ENOENT
? LOG_DEBUG
: LOG_WARNING
, errno
,
771 "Failed to stat directory entry '%s', ignoring: %m", dentry_name
);
773 if (S_ISREG(st
.st_mode
)) {
774 _cleanup_free_
char *n
= NULL
, *user_name
= NULL
, *realm
= NULL
;
779 n
= strndup(dentry_name
, luks_suffix
- dentry_name
);
783 r
= split_user_name_realm(n
, &user_name
, &realm
);
784 if (r
== -EINVAL
) /* Not the right format: ignore */
787 return log_error_errno(r
, "Failed to split image name into user name/realm: %m");
789 return manager_add_home_by_image(m
, user_name
, realm
, path
, NULL
, USER_LUKS
, UID_INVALID
);
792 if (S_ISDIR(st
.st_mode
)) {
793 _cleanup_free_
char *n
= NULL
, *user_name
= NULL
, *realm
= NULL
;
794 _cleanup_close_
int fd
= -1;
797 if (!directory_suffix
)
800 n
= strndup(dentry_name
, directory_suffix
- dentry_name
);
804 r
= split_user_name_realm(n
, &user_name
, &realm
);
805 if (r
== -EINVAL
) /* Not the right format: ignore */
808 return log_error_errno(r
, "Failed to split image name into user name/realm: %m");
811 fd
= openat(dir_fd
, dentry_name
, O_DIRECTORY
|O_RDONLY
|O_CLOEXEC
);
813 fd
= open(path
, O_DIRECTORY
|O_RDONLY
|O_CLOEXEC
);
815 return log_full_errno(errno
== ENOENT
? LOG_DEBUG
: LOG_WARNING
, errno
,
816 "Failed to open directory '%s', ignoring: %m", path
);
818 if (fstat(fd
, &st
) < 0)
819 return log_warning_errno(errno
, "Failed to fstat() %s, ignoring: %m", path
);
821 assert(S_ISDIR(st
.st_mode
)); /* Must hold, we used O_DIRECTORY above */
823 r
= btrfs_is_subvol_fd(fd
);
825 return log_warning_errno(errno
, "Failed to determine whether %s is a btrfs subvolume: %m", path
);
827 storage
= USER_SUBVOLUME
;
829 struct fscrypt_policy policy
;
831 if (ioctl(fd
, FS_IOC_GET_ENCRYPTION_POLICY
, &policy
) < 0) {
833 if (errno
== ENODATA
)
834 log_debug_errno(errno
, "Determined %s is not fscrypt encrypted.", path
);
835 else if (ERRNO_IS_NOT_SUPPORTED(errno
))
836 log_debug_errno(errno
, "Determined %s is not fscrypt encrypted because kernel or file system don't support it.", path
);
838 log_debug_errno(errno
, "FS_IOC_GET_ENCRYPTION_POLICY failed with unexpected error code on %s, ignoring: %m", path
);
840 storage
= USER_DIRECTORY
;
842 storage
= USER_FSCRYPT
;
845 return manager_add_home_by_image(m
, user_name
, realm
, path
, NULL
, storage
, st
.st_uid
);
851 int manager_enumerate_images(Manager
*m
) {
852 _cleanup_closedir_
DIR *d
= NULL
;
857 if (!m
->scan_slash_home
)
860 d
= opendir("/home/");
862 return log_full_errno(errno
== ENOENT
? LOG_DEBUG
: LOG_ERR
, errno
,
863 "Failed to open /home/: %m");
865 FOREACH_DIRENT(de
, d
, return log_error_errno(errno
, "Failed to read /home/ directory: %m"))
866 (void) manager_assess_image(m
, dirfd(d
), "/home", de
->d_name
);
871 static int manager_connect_bus(Manager
*m
) {
877 r
= sd_bus_default_system(&m
->bus
);
879 return log_error_errno(r
, "Failed to connect to system bus: %m");
881 r
= sd_bus_add_object_vtable(m
->bus
, NULL
, "/org/freedesktop/home1", "org.freedesktop.home1.Manager", manager_vtable
, m
);
883 return log_error_errno(r
, "Failed to add manager object vtable: %m");
885 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/home1/home", "org.freedesktop.home1.Home", home_vtable
, bus_home_object_find
, m
);
887 return log_error_errno(r
, "Failed to add image object vtable: %m");
889 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/home1/home", bus_home_node_enumerator
, m
);
891 return log_error_errno(r
, "Failed to add image enumerator: %m");
893 r
= sd_bus_add_object_manager(m
->bus
, NULL
, "/org/freedesktop/home1/home");
895 return log_error_errno(r
, "Failed to add object manager: %m");
897 r
= sd_bus_request_name_async(m
->bus
, NULL
, "org.freedesktop.home1", 0, NULL
, NULL
);
899 return log_error_errno(r
, "Failed to request name: %m");
901 r
= sd_bus_attach_event(m
->bus
, m
->event
, 0);
903 return log_error_errno(r
, "Failed to attach bus to event loop: %m");
905 (void) sd_bus_set_exit_on_disconnect(m
->bus
, true);
910 static int manager_bind_varlink(Manager
*m
) {
914 assert(!m
->varlink_server
);
916 r
= varlink_server_new(&m
->varlink_server
, VARLINK_SERVER_ACCOUNT_UID
);
918 return log_error_errno(r
, "Failed to allocate varlink server object: %m");
920 varlink_server_set_userdata(m
->varlink_server
, m
);
922 r
= varlink_server_bind_method_many(
924 "io.systemd.UserDatabase.GetUserRecord", vl_method_get_user_record
,
925 "io.systemd.UserDatabase.GetGroupRecord", vl_method_get_group_record
,
926 "io.systemd.UserDatabase.GetMemberships", vl_method_get_memberships
);
928 return log_error_errno(r
, "Failed to register varlink methods: %m");
930 (void) mkdir_p("/run/systemd/userdb", 0755);
932 r
= varlink_server_listen_address(m
->varlink_server
, "/run/systemd/userdb/io.systemd.Home", 0666);
934 return log_error_errno(r
, "Failed to bind to varlink socket: %m");
936 r
= varlink_server_attach_event(m
->varlink_server
, m
->event
, SD_EVENT_PRIORITY_NORMAL
);
938 return log_error_errno(r
, "Failed to attach varlink connection to event loop: %m");
943 static ssize_t
read_datagram(int fd
, struct ucred
*ret_sender
, void **ret
) {
944 _cleanup_free_
void *buffer
= NULL
;
951 n
= next_datagram_size_fd(fd
);
955 buffer
= malloc(n
+ 2);
961 struct cmsghdr cmsghdr
;
962 uint8_t buf
[CMSG_SPACE(sizeof(struct ucred
))];
964 bool found_ucred
= false;
965 struct cmsghdr
*cmsg
;
969 /* Pass one extra byte, as a size check */
970 iov
= IOVEC_MAKE(buffer
, n
+ 1);
972 mh
= (struct msghdr
) {
975 .msg_control
= &control
,
976 .msg_controllen
= sizeof(control
),
979 m
= recvmsg(fd
, &mh
, MSG_DONTWAIT
|MSG_CMSG_CLOEXEC
);
985 /* Ensure the size matches what we determined before */
989 CMSG_FOREACH(cmsg
, &mh
)
990 if (cmsg
->cmsg_level
== SOL_SOCKET
&&
991 cmsg
->cmsg_type
== SCM_CREDENTIALS
&&
992 cmsg
->cmsg_len
== CMSG_LEN(sizeof(struct ucred
))) {
994 memcpy(ret_sender
, CMSG_DATA(cmsg
), sizeof(struct ucred
));
999 *ret_sender
= (struct ucred
) {
1005 m
= recv(fd
, buffer
, n
+ 1, MSG_DONTWAIT
);
1009 /* Ensure the size matches what we determined before */
1014 /* For safety reasons: let's always NUL terminate. */
1015 ((char*) buffer
)[n
] = 0;
1016 *ret
= TAKE_PTR(buffer
);
1021 static int on_notify_socket(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
1022 _cleanup_strv_free_
char **l
= NULL
;
1023 _cleanup_free_
void *datagram
= NULL
;
1024 struct ucred sender
;
1025 Manager
*m
= userdata
;
1032 n
= read_datagram(fd
, &sender
, &datagram
);
1033 if (IN_SET(n
, -EAGAIN
, -EINTR
))
1036 return log_error_errno(n
, "Failed to read notify datagram: %m");
1038 if (sender
.pid
<= 0) {
1039 log_warning("Received notify datagram without valid sender PID, ignoring.");
1043 h
= hashmap_get(m
->homes_by_worker_pid
, PID_TO_PTR(sender
.pid
));
1045 log_warning("Recieved notify datagram of unknown process, ignoring.");
1049 l
= strv_split(datagram
, "\n");
1053 home_process_notify(h
, l
);
1057 static int manager_listen_notify(Manager
*m
) {
1058 _cleanup_close_
int fd
= -1;
1059 union sockaddr_union sa
= {
1060 .un
.sun_family
= AF_UNIX
,
1061 .un
.sun_path
= "/run/systemd/home/notify",
1066 assert(!m
->notify_socket_event_source
);
1068 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
1070 return log_error_errno(errno
, "Failed to create listening socket: %m");
1072 (void) mkdir_parents(sa
.un
.sun_path
, 0755);
1073 (void) sockaddr_un_unlink(&sa
.un
);
1075 if (bind(fd
, &sa
.sa
, SOCKADDR_UN_LEN(sa
.un
)) < 0)
1076 return log_error_errno(errno
, "Failed to bind to socket: %m");
1078 r
= setsockopt_int(fd
, SOL_SOCKET
, SO_PASSCRED
, true);
1082 r
= sd_event_add_io(m
->event
, &m
->notify_socket_event_source
, fd
, EPOLLIN
, on_notify_socket
, m
);
1084 return log_error_errno(r
, "Failed to allocate event source for notify socket: %m");
1086 (void) sd_event_source_set_description(m
->notify_socket_event_source
, "notify-socket");
1088 /* Make sure we process sd_notify() before SIGCHLD for any worker, so that we always know the error
1089 * number of a client before it exits. */
1090 r
= sd_event_source_set_priority(m
->notify_socket_event_source
, SD_EVENT_PRIORITY_NORMAL
- 5);
1092 return log_error_errno(r
, "Failed to alter priority of NOTIFY_SOCKET event source: %m");
1094 r
= sd_event_source_set_io_fd_own(m
->notify_socket_event_source
, true);
1096 return log_error_errno(r
, "Failed to pass ownership of notify socket: %m");
1101 static int manager_add_device(Manager
*m
, sd_device
*d
) {
1102 _cleanup_free_
char *user_name
= NULL
, *realm
= NULL
, *node
= NULL
;
1103 const char *tabletype
, *parttype
, *partname
, *partuuid
, *sysfs
;
1110 r
= sd_device_get_syspath(d
, &sysfs
);
1112 return log_error_errno(r
, "Failed to acquire sysfs path of device: %m");
1114 r
= sd_device_get_property_value(d
, "ID_PART_TABLE_TYPE", &tabletype
);
1118 return log_error_errno(r
, "Failed to acquire ID_PART_TABLE_TYPE device property, ignoring: %m");
1120 if (!streq(tabletype
, "gpt")) {
1121 log_debug("Found partition (%s) on non-GPT table, ignoring.", sysfs
);
1125 r
= sd_device_get_property_value(d
, "ID_PART_ENTRY_TYPE", &parttype
);
1129 return log_error_errno(r
, "Failed to acquire ID_PART_ENTRY_TYPE device property, ignoring: %m");
1130 r
= sd_id128_from_string(parttype
, &id
);
1132 return log_debug_errno(r
, "Failed to parse ID_PART_ENTRY_TYPE field '%s', ignoring: %m", parttype
);
1133 if (!sd_id128_equal(id
, GPT_USER_HOME
)) {
1134 log_debug("Found partition (%s) we don't care about, ignoring.", sysfs
);
1138 r
= sd_device_get_property_value(d
, "ID_PART_ENTRY_NAME", &partname
);
1140 return log_warning_errno(r
, "Failed to acquire ID_PART_ENTRY_NAME device property, ignoring: %m");
1142 r
= split_user_name_realm(partname
, &user_name
, &realm
);
1144 return log_warning_errno(r
, "Found partition with correct partition type but a non-parsable partition name '%s', ignoring.", partname
);
1146 return log_error_errno(r
, "Failed to validate partition name '%s': %m", partname
);
1148 r
= sd_device_get_property_value(d
, "ID_FS_UUID", &partuuid
);
1150 return log_warning_errno(r
, "Failed to acquire ID_FS_UUID device property, ignoring: %m");
1152 r
= sd_id128_from_string(partuuid
, &id
);
1154 return log_warning_errno(r
, "Failed to parse ID_FS_UUID field '%s', ignoring: %m", partuuid
);
1156 if (asprintf(&node
, "/dev/disk/by-uuid/" SD_ID128_UUID_FORMAT_STR
, SD_ID128_FORMAT_VAL(id
)) < 0)
1159 return manager_add_home_by_image(m
, user_name
, realm
, node
, sysfs
, USER_LUKS
, UID_INVALID
);
1162 static int manager_on_device(sd_device_monitor
*monitor
, sd_device
*d
, void *userdata
) {
1163 Manager
*m
= userdata
;
1169 if (device_for_action(d
, DEVICE_ACTION_REMOVE
)) {
1173 r
= sd_device_get_syspath(d
, &sysfs
);
1175 log_warning_errno(r
, "Failed to acquire sysfs path from device: %m");
1179 log_info("block device %s has been removed.", sysfs
);
1181 /* Let's see if we previously synthesized a home record from this device, if so, let's just
1182 * revalidate that. Otherwise let's revalidate them all, but asynchronously. */
1183 h
= hashmap_get(m
->homes_by_sysfs
, sysfs
);
1185 manager_revalidate_image(m
, h
);
1187 manager_enqueue_gc(m
, NULL
);
1189 (void) manager_add_device(m
, d
);
1191 (void) bus_manager_emit_auto_login_changed(m
);
1195 static int manager_watch_devices(Manager
*m
) {
1199 assert(!m
->device_monitor
);
1201 r
= sd_device_monitor_new(&m
->device_monitor
);
1203 return log_error_errno(r
, "Failed to allocate device monitor: %m");
1205 r
= sd_device_monitor_filter_add_match_subsystem_devtype(m
->device_monitor
, "block", NULL
);
1207 return log_error_errno(r
, "Failed to configure device monitor match: %m");
1209 r
= sd_device_monitor_attach_event(m
->device_monitor
, m
->event
);
1211 return log_error_errno(r
, "Failed to attach device monitor to event loop: %m");
1213 r
= sd_device_monitor_start(m
->device_monitor
, manager_on_device
, m
);
1215 return log_error_errno(r
, "Failed to start device monitor: %m");
1220 static int manager_enumerate_devices(Manager
*m
) {
1221 _cleanup_(sd_device_enumerator_unrefp
) sd_device_enumerator
*e
= NULL
;
1227 r
= sd_device_enumerator_new(&e
);
1231 r
= sd_device_enumerator_add_match_subsystem(e
, "block", true);
1235 FOREACH_DEVICE(e
, d
)
1236 (void) manager_add_device(m
, d
);
1241 static int manager_load_key_pair(Manager
*m
) {
1242 _cleanup_(fclosep
) FILE *f
= NULL
;
1248 if (m
->private_key
) {
1249 EVP_PKEY_free(m
->private_key
);
1250 m
->private_key
= NULL
;
1253 r
= search_and_fopen_nulstr("local.private", "re", NULL
, KEY_PATHS_NULSTR
, &f
);
1257 return log_error_errno(r
, "Failed to read private key file: %m");
1259 if (fstat(fileno(f
), &st
) < 0)
1260 return log_error_errno(errno
, "Failed to stat private key file: %m");
1262 r
= stat_verify_regular(&st
);
1264 return log_error_errno(r
, "Private key file is not regular: %m");
1266 if (st
.st_uid
!= 0 || (st
.st_mode
& 0077) != 0)
1267 return log_error_errno(SYNTHETIC_ERRNO(EPERM
), "Private key file is readable by more than the root user");
1269 m
->private_key
= PEM_read_PrivateKey(f
, NULL
, NULL
, NULL
);
1270 if (!m
->private_key
)
1271 return log_error_errno(SYNTHETIC_ERRNO(EIO
), "Failed to load private key pair");
1273 log_info("Successfully loaded private key pair.");
1278 DEFINE_TRIVIAL_CLEANUP_FUNC(EVP_PKEY_CTX
*, EVP_PKEY_CTX_free
);
1280 static int manager_generate_key_pair(Manager
*m
) {
1281 _cleanup_(EVP_PKEY_CTX_freep
) EVP_PKEY_CTX
*ctx
= NULL
;
1282 _cleanup_(unlink_and_freep
) char *temp_public
= NULL
, *temp_private
= NULL
;
1283 _cleanup_fclose_
FILE *fpublic
= NULL
, *fprivate
= NULL
;
1286 if (m
->private_key
) {
1287 EVP_PKEY_free(m
->private_key
);
1288 m
->private_key
= NULL
;
1291 ctx
= EVP_PKEY_CTX_new_id(EVP_PKEY_ED25519
, NULL
);
1293 return log_error_errno(SYNTHETIC_ERRNO(EIO
), "Failed to allocate Ed25519 key generation context.");
1295 if (EVP_PKEY_keygen_init(ctx
) <= 0)
1296 return log_error_errno(SYNTHETIC_ERRNO(EIO
), "Failed to initialize Ed25519 key generation context.");
1298 log_info("Generating key pair for signing local user identity records.");
1300 if (EVP_PKEY_keygen(ctx
, &m
->private_key
) <= 0)
1301 return log_error_errno(SYNTHETIC_ERRNO(EIO
), "Failed to generate Ed25519 key pair");
1303 log_info("Successfully created Ed25519 key pair.");
1305 (void) mkdir_p("/var/lib/systemd/home", 0755);
1307 /* Write out public key (note that we only do that as a help to the user, we don't make use of this ever */
1308 r
= fopen_temporary("/var/lib/systemd/home/local.public", &fpublic
, &temp_public
);
1310 return log_error_errno(errno
, "Failed ot open key file for writing: %m");
1312 if (PEM_write_PUBKEY(fpublic
, m
->private_key
) <= 0)
1313 return log_error_errno(SYNTHETIC_ERRNO(EIO
), "Failed to write public key.");
1315 r
= fflush_and_check(fpublic
);
1317 return log_error_errno(r
, "Failed to write private key: %m");
1319 fpublic
= safe_fclose(fpublic
);
1321 /* Write out the private key (this actually writes out both private and public, OpenSSL is confusing) */
1322 r
= fopen_temporary("/var/lib/systemd/home/local.private", &fprivate
, &temp_private
);
1324 return log_error_errno(errno
, "Failed ot open key file for writing: %m");
1326 if (PEM_write_PrivateKey(fprivate
, m
->private_key
, NULL
, NULL
, 0, NULL
, 0) <= 0)
1327 return log_error_errno(SYNTHETIC_ERRNO(EIO
), "Failed to write private key pair.");
1329 r
= fflush_and_check(fprivate
);
1331 return log_error_errno(r
, "Failed to write private key: %m");
1333 fprivate
= safe_fclose(fprivate
);
1335 /* Both are written now, move them into place */
1337 if (rename(temp_public
, "/var/lib/systemd/home/local.public") < 0)
1338 return log_error_errno(errno
, "Failed to move public key file into place: %m");
1339 temp_public
= mfree(temp_public
);
1341 if (rename(temp_private
, "/var/lib/systemd/home/local.private") < 0) {
1342 (void) unlink_noerrno("/var/lib/systemd/home/local.public"); /* try to remove the file we already created */
1343 return log_error_errno(errno
, "Failed to move privtate key file into place: %m");
1345 temp_private
= mfree(temp_private
);
1350 int manager_acquire_key_pair(Manager
*m
) {
1355 /* Already there? */
1359 /* First try to load key off disk */
1360 r
= manager_load_key_pair(m
);
1364 /* Didn't work, generate a new one */
1365 return manager_generate_key_pair(m
);
1368 int manager_sign_user_record(Manager
*m
, UserRecord
*u
, UserRecord
**ret
, sd_bus_error
*error
) {
1375 r
= manager_acquire_key_pair(m
);
1379 return sd_bus_error_setf(error
, BUS_ERROR_NO_PRIVATE_KEY
, "Can't sign without local key.");
1381 return user_record_sign(u
, m
->private_key
, ret
);
1384 DEFINE_PRIVATE_HASH_OPS_FULL(public_key_hash_ops
, char, string_hash_func
, string_compare_func
, free
, EVP_PKEY
, EVP_PKEY_free
);
1385 DEFINE_TRIVIAL_CLEANUP_FUNC(EVP_PKEY
*, EVP_PKEY_free
);
1387 static int manager_load_public_key_one(Manager
*m
, const char *path
) {
1388 _cleanup_(EVP_PKEY_freep
) EVP_PKEY
*pkey
= NULL
;
1389 _cleanup_fclose_
FILE *f
= NULL
;
1390 _cleanup_free_
char *fn
= NULL
;
1396 if (streq(basename(path
), "local.public")) /* we already loaded the private key, which includes the public one */
1399 f
= fopen(path
, "re");
1401 if (errno
== ENOENT
)
1404 return log_error_errno(errno
, "Failed to open public key %s: %m", path
);
1407 if (fstat(fileno(f
), &st
) < 0)
1408 return log_error_errno(errno
, "Failed to stat public key %s: %m", path
);
1410 r
= stat_verify_regular(&st
);
1412 return log_error_errno(r
, "Public key file %s is not a regular file: %m", path
);
1414 if (st
.st_uid
!= 0 || (st
.st_mode
& 0022) != 0)
1415 return log_error_errno(SYNTHETIC_ERRNO(EPERM
), "Public key file %s is writable by more than the root user, refusing.", path
);
1417 r
= hashmap_ensure_allocated(&m
->public_keys
, &public_key_hash_ops
);
1421 pkey
= PEM_read_PUBKEY(f
, &pkey
, NULL
, NULL
);
1423 return log_error_errno(SYNTHETIC_ERRNO(EIO
), "Failed to parse public key file %s.", path
);
1425 fn
= strdup(basename(path
));
1429 r
= hashmap_put(m
->public_keys
, fn
, pkey
);
1431 return log_error_errno(r
, "Failed to add public key to set: %m");
1439 static int manager_load_public_keys(Manager
*m
) {
1440 _cleanup_strv_free_
char **files
= NULL
;
1446 m
->public_keys
= hashmap_free(m
->public_keys
);
1448 r
= conf_files_list_nulstr(
1452 CONF_FILES_REGULAR
|CONF_FILES_FILTER_MASKED
,
1455 return log_error_errno(r
, "Failed to assemble list of public key directories: %m");
1457 STRV_FOREACH(i
, files
)
1458 (void) manager_load_public_key_one(m
, *i
);
1463 int manager_startup(Manager
*m
) {
1468 r
= manager_listen_notify(m
);
1472 r
= manager_connect_bus(m
);
1476 r
= manager_bind_varlink(m
);
1480 r
= manager_load_key_pair(m
); /* only try to load it, don't generate any */
1484 r
= manager_load_public_keys(m
);
1488 manager_watch_home(m
);
1489 (void) manager_watch_devices(m
);
1491 (void) manager_enumerate_records(m
);
1492 (void) manager_enumerate_images(m
);
1493 (void) manager_enumerate_devices(m
);
1495 /* Let's clean up home directories whose devices got removed while we were not running */
1496 (void) manager_enqueue_gc(m
, NULL
);
1501 void manager_revalidate_image(Manager
*m
, Home
*h
) {
1507 /* Frees an automatically discovered image, if it's synthetic and its image disappeared. Unmounts any
1508 * image if it's mounted but it's image vanished. */
1510 if (h
->current_operation
|| !ordered_set_isempty(h
->pending_operations
))
1513 if (h
->state
== HOME_UNFIXATED
) {
1514 r
= user_record_test_image_path(h
->record
);
1516 log_warning_errno(r
, "Can't determine if image of %s exists, freeing unfixated user: %m", h
->user_name
);
1517 else if (r
== USER_TEST_ABSENT
)
1518 log_info("Image for %s disappeared, freeing unfixated user.", h
->user_name
);
1524 } else if (h
->state
< 0) {
1526 r
= user_record_test_home_directory(h
->record
);
1528 log_warning_errno(r
, "Unable to determine state of home directory, ignoring: %m");
1532 if (r
== USER_TEST_MOUNTED
) {
1533 r
= user_record_test_image_path(h
->record
);
1535 log_warning_errno(r
, "Unable to determine state of image path, ignoring: %m");
1539 if (r
== USER_TEST_ABSENT
) {
1540 _cleanup_(operation_unrefp
) Operation
*o
= NULL
;
1542 log_notice("Backing image disappeared while home directory %s was mounted, unmounting it forcibly.", h
->user_name
);
1543 /* Wowza, the thing is mounted, but the device is gone? Act on it. */
1545 r
= home_killall(h
);
1547 log_warning_errno(r
, "Failed to kill processes of user %s, ignoring: %m", h
->user_name
);
1549 /* We enqueue the operation here, after all the home directory might
1550 * currently already run some operation, and we can deactivate it only after
1551 * that's complete. */
1552 o
= operation_new(OPERATION_DEACTIVATE_FORCE
, NULL
);
1558 r
= home_schedule_operation(h
, o
, NULL
);
1560 log_warning_errno(r
, "Failed to enqueue forced home directory %s deactivation, ignoring: %m", h
->user_name
);
1566 int manager_gc_images(Manager
*m
) {
1572 /* Focus on a specific home */
1574 h
= TAKE_PTR(m
->gc_focus
);
1575 manager_revalidate_image(m
, h
);
1580 HASHMAP_FOREACH(h
, m
->homes_by_name
, i
)
1581 manager_revalidate_image(m
, h
);
1587 static int on_deferred_rescan(sd_event_source
*s
, void *userdata
) {
1588 Manager
*m
= userdata
;
1592 m
->deferred_rescan_event_source
= sd_event_source_unref(m
->deferred_rescan_event_source
);
1594 manager_enumerate_devices(m
);
1595 manager_enumerate_images(m
);
1599 int manager_enqueue_rescan(Manager
*m
) {
1604 if (m
->deferred_rescan_event_source
)
1610 if (IN_SET(sd_event_get_state(m
->event
), SD_EVENT_FINISHED
, SD_EVENT_EXITING
))
1613 r
= sd_event_add_defer(m
->event
, &m
->deferred_rescan_event_source
, on_deferred_rescan
, m
);
1615 return log_error_errno(r
, "Failed to allocate rescan event source: %m");
1617 r
= sd_event_source_set_priority(m
->deferred_rescan_event_source
, SD_EVENT_PRIORITY_IDLE
+1);
1619 log_warning_errno(r
, "Failed to tweak priority of event source, ignoring: %m");
1621 (void) sd_event_source_set_description(m
->deferred_rescan_event_source
, "deferred-rescan");
1625 static int on_deferred_gc(sd_event_source
*s
, void *userdata
) {
1626 Manager
*m
= userdata
;
1630 m
->deferred_gc_event_source
= sd_event_source_unref(m
->deferred_gc_event_source
);
1632 manager_gc_images(m
);
1636 int manager_enqueue_gc(Manager
*m
, Home
*focus
) {
1641 /* This enqueues a request to GC dead homes. It may be called with focus=NULL in which case all homes
1642 * will be scanned, or with the parameter set, in which case only that home is checked. */
1647 if (IN_SET(sd_event_get_state(m
->event
), SD_EVENT_FINISHED
, SD_EVENT_EXITING
))
1650 /* If a focus home is specified, then remember to focus just on this home. Otherwise invalidate any
1651 * focus that might be set to look at all homes. */
1653 if (m
->deferred_gc_event_source
) {
1654 if (m
->gc_focus
!= focus
) /* not the same focus, then look at everything */
1659 m
->gc_focus
= focus
; /* start focussed */
1661 r
= sd_event_add_defer(m
->event
, &m
->deferred_gc_event_source
, on_deferred_gc
, m
);
1663 return log_error_errno(r
, "Failed to allocate gc event source: %m");
1665 r
= sd_event_source_set_priority(m
->deferred_gc_event_source
, SD_EVENT_PRIORITY_IDLE
);
1667 log_warning_errno(r
, "Failed to tweak priority of event source, ignoring: %m");
1669 (void) sd_event_source_set_description(m
->deferred_gc_event_source
, "deferred-gc");