1 /* SPDX-License-Identifier: LGPL-2.1+ */
4 #include <linux/memfd.h>
11 #include "blockdev-util.h"
12 #include "btrfs-util.h"
13 #include "bus-common-errors.h"
15 #include "errno-list.h"
16 #include "errno-util.h"
19 #include "home-util.h"
20 #include "homed-home-bus.h"
21 #include "homed-home.h"
22 #include "missing_syscall.h"
24 #include "path-util.h"
25 #include "process-util.h"
26 #include "pwquality-util.h"
27 #include "quota-util.h"
28 #include "resize-fs.h"
30 #include "signal-util.h"
31 #include "stat-util.h"
32 #include "string-table.h"
34 #include "user-record-sign.h"
35 #include "user-record-util.h"
36 #include "user-record.h"
37 #include "user-util.h"
39 #define HOME_USERS_MAX 500
40 #define PENDING_OPERATIONS_MAX 100
42 assert_cc(HOME_UID_MIN
<= HOME_UID_MAX
);
43 assert_cc(HOME_USERS_MAX
<= (HOME_UID_MAX
- HOME_UID_MIN
+ 1));
45 static int home_start_work(Home
*h
, const char *verb
, UserRecord
*hr
, UserRecord
*secret
);
47 DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(operation_hash_ops
, void, trivial_hash_func
, trivial_compare_func
, Operation
, operation_unref
);
49 static int suitable_home_record(UserRecord
*hr
) {
57 /* We are a bit more restrictive with what we accept as homed-managed user than what we accept in
58 * home records in general. Let's enforce the stricter rule here. */
59 if (!suitable_user_name(hr
->user_name
))
61 if (!uid_is_valid(hr
->uid
))
64 /* Insist we are outside of the dynamic and system range */
65 if (uid_is_system(hr
->uid
) || gid_is_system(user_record_gid(hr
)) ||
66 uid_is_dynamic(hr
->uid
) || gid_is_dynamic(user_record_gid(hr
)))
67 return -EADDRNOTAVAIL
;
69 /* Insist that GID and UID match */
70 if (user_record_gid(hr
) != (gid_t
) hr
->uid
)
73 /* Similar for the realm */
75 r
= suitable_realm(hr
->realm
);
85 int home_new(Manager
*m
, UserRecord
*hr
, const char *sysfs
, Home
**ret
) {
86 _cleanup_(home_freep
) Home
*home
= NULL
;
87 _cleanup_free_
char *nm
= NULL
, *ns
= NULL
;
93 r
= suitable_home_record(hr
);
97 if (hashmap_contains(m
->homes_by_name
, hr
->user_name
))
100 if (hashmap_contains(m
->homes_by_uid
, UID_TO_PTR(hr
->uid
)))
103 if (sysfs
&& hashmap_contains(m
->homes_by_sysfs
, sysfs
))
106 if (hashmap_size(m
->homes_by_name
) >= HOME_USERS_MAX
)
109 nm
= strdup(hr
->user_name
);
125 .user_name
= TAKE_PTR(nm
),
127 .state
= _HOME_STATE_INVALID
,
128 .worker_stdout_fd
= -1,
129 .sysfs
= TAKE_PTR(ns
),
130 .signed_locally
= -1,
133 r
= hashmap_put(m
->homes_by_name
, home
->user_name
, home
);
137 r
= hashmap_put(m
->homes_by_uid
, UID_TO_PTR(home
->uid
), home
);
142 r
= hashmap_put(m
->homes_by_sysfs
, home
->sysfs
, home
);
147 r
= user_record_clone(hr
, USER_RECORD_LOAD_MASK_SECRET
, &home
->record
);
151 (void) bus_manager_emit_auto_login_changed(m
);
152 (void) bus_home_emit_change(home
);
155 *ret
= TAKE_PTR(home
);
162 Home
*home_free(Home
*h
) {
168 (void) bus_home_emit_remove(h
);
169 (void) bus_manager_emit_auto_login_changed(h
->manager
);
172 (void) hashmap_remove_value(h
->manager
->homes_by_name
, h
->user_name
, h
);
174 if (uid_is_valid(h
->uid
))
175 (void) hashmap_remove_value(h
->manager
->homes_by_uid
, UID_TO_PTR(h
->uid
), h
);
178 (void) hashmap_remove_value(h
->manager
->homes_by_sysfs
, h
->sysfs
, h
);
180 if (h
->worker_pid
> 0)
181 (void) hashmap_remove_value(h
->manager
->homes_by_worker_pid
, PID_TO_PTR(h
->worker_pid
), h
);
183 if (h
->manager
->gc_focus
== h
)
184 h
->manager
->gc_focus
= NULL
;
187 user_record_unref(h
->record
);
188 user_record_unref(h
->secret
);
190 h
->worker_event_source
= sd_event_source_unref(h
->worker_event_source
);
191 safe_close(h
->worker_stdout_fd
);
195 h
->ref_event_source_please_suspend
= sd_event_source_unref(h
->ref_event_source_please_suspend
);
196 h
->ref_event_source_dont_suspend
= sd_event_source_unref(h
->ref_event_source_dont_suspend
);
198 h
->pending_operations
= ordered_set_free(h
->pending_operations
);
199 h
->pending_event_source
= sd_event_source_unref(h
->pending_event_source
);
200 h
->deferred_change_event_source
= sd_event_source_unref(h
->deferred_change_event_source
);
202 h
->current_operation
= operation_unref(h
->current_operation
);
207 int home_set_record(Home
*h
, UserRecord
*hr
) {
208 _cleanup_(user_record_unrefp
) UserRecord
*new_hr
= NULL
;
213 assert(h
->user_name
);
217 if (user_record_equal(h
->record
, hr
))
220 r
= suitable_home_record(hr
);
224 if (!user_record_compatible(h
->record
, hr
))
227 if (!FLAGS_SET(hr
->mask
, USER_RECORD_REGULAR
) ||
228 FLAGS_SET(hr
->mask
, USER_RECORD_SECRET
))
231 if (FLAGS_SET(h
->record
->mask
, USER_RECORD_STATUS
)) {
232 _cleanup_(json_variant_unrefp
) JsonVariant
*v
= NULL
;
234 /* Hmm, the existing record has status fields? If so, copy them over */
236 v
= json_variant_ref(hr
->json
);
237 r
= json_variant_set_field(&v
, "status", json_variant_by_key(h
->record
->json
, "status"));
241 new_hr
= user_record_new();
245 r
= user_record_load(new_hr
, v
, USER_RECORD_LOAD_REFUSE_SECRET
);
252 other
= hashmap_get(h
->manager
->homes_by_uid
, UID_TO_PTR(hr
->uid
));
253 if (other
&& other
!= h
)
256 if (h
->uid
!= hr
->uid
) {
257 r
= hashmap_remove_and_replace(h
->manager
->homes_by_uid
, UID_TO_PTR(h
->uid
), UID_TO_PTR(hr
->uid
), h
);
262 user_record_unref(h
->record
);
263 h
->record
= user_record_ref(hr
);
264 h
->uid
= h
->record
->uid
;
266 /* The updated record might have a different autologin setting, trigger a PropertiesChanged event for it */
267 (void) bus_manager_emit_auto_login_changed(h
->manager
);
268 (void) bus_home_emit_change(h
);
273 int home_save_record(Home
*h
) {
274 _cleanup_(json_variant_unrefp
) JsonVariant
*v
= NULL
;
275 _cleanup_free_
char *text
= NULL
;
281 v
= json_variant_ref(h
->record
->json
);
282 r
= json_variant_normalize(&v
);
284 log_warning_errno(r
, "User record could not be normalized.");
286 r
= json_variant_format(v
, JSON_FORMAT_PRETTY
|JSON_FORMAT_NEWLINE
, &text
);
290 (void) mkdir("/var/lib/systemd/", 0755);
291 (void) mkdir("/var/lib/systemd/home/", 0700);
293 fn
= strjoina("/var/lib/systemd/home/", h
->user_name
, ".identity");
295 r
= write_string_file(fn
, text
, WRITE_STRING_FILE_ATOMIC
|WRITE_STRING_FILE_CREATE
|WRITE_STRING_FILE_MODE_0600
|WRITE_STRING_FILE_SYNC
);
302 int home_unlink_record(Home
*h
) {
307 fn
= strjoina("/var/lib/systemd/home/", h
->user_name
, ".identity");
308 if (unlink(fn
) < 0 && errno
!= ENOENT
)
311 fn
= strjoina("/run/systemd/home/", h
->user_name
, ".ref");
312 if (unlink(fn
) < 0 && errno
!= ENOENT
)
318 static void home_set_state(Home
*h
, HomeState state
) {
319 HomeState old_state
, new_state
;
323 old_state
= home_get_state(h
);
325 new_state
= home_get_state(h
); /* Query the new state, since the 'state' variable might be set to -1,
326 * in which case we synthesize an high-level state on demand */
328 log_info("%s: changing state %s → %s", h
->user_name
,
329 home_state_to_string(old_state
),
330 home_state_to_string(new_state
));
332 if (HOME_STATE_IS_EXECUTING_OPERATION(old_state
) && !HOME_STATE_IS_EXECUTING_OPERATION(new_state
)) {
333 /* If we just finished executing some operation, process the queue of pending operations. And
334 * enqueue it for GC too. */
336 home_schedule_operation(h
, NULL
, NULL
);
337 manager_enqueue_gc(h
->manager
, h
);
341 static int home_parse_worker_stdout(int _fd
, UserRecord
**ret
) {
342 _cleanup_(json_variant_unrefp
) JsonVariant
*v
= NULL
;
343 _cleanup_close_
int fd
= _fd
; /* take possession, even on failure */
344 _cleanup_(user_record_unrefp
) UserRecord
*hr
= NULL
;
345 _cleanup_fclose_
FILE *f
= NULL
;
346 unsigned line
, column
;
350 if (fstat(fd
, &st
) < 0)
351 return log_error_errno(errno
, "Failed to stat stdout fd: %m");
353 assert(S_ISREG(st
.st_mode
));
355 if (st
.st_size
== 0) { /* empty record */
360 if (lseek(fd
, SEEK_SET
, 0) == (off_t
) -1)
361 return log_error_errno(errno
, "Failed to seek to beginning of memfd: %m");
363 f
= take_fdopen(&fd
, "r");
365 return log_error_errno(errno
, "Failed to reopen memfd: %m");
368 _cleanup_free_
char *text
= NULL
;
370 r
= read_full_stream(f
, &text
, NULL
);
372 return log_error_errno(r
, "Failed to read from client: %m");
374 log_debug("Got from worker: %s", text
);
378 r
= json_parse_file(f
, "stdout", JSON_PARSE_SENSITIVE
, &v
, &line
, &column
);
380 return log_error_errno(r
, "Failed to parse identity at %u:%u: %m", line
, column
);
382 hr
= user_record_new();
386 r
= user_record_load(hr
, v
, USER_RECORD_LOAD_REFUSE_SECRET
);
388 return log_error_errno(r
, "Failed to load home record identity: %m");
394 static int home_verify_user_record(Home
*h
, UserRecord
*hr
, bool *ret_signed_locally
, sd_bus_error
*ret_error
) {
399 assert(ret_signed_locally
);
401 is_signed
= manager_verify_user_record(h
->manager
, hr
);
404 case USER_RECORD_SIGNED_EXCLUSIVE
:
405 log_info("Home %s is signed exclusively by our key, accepting.", hr
->user_name
);
406 *ret_signed_locally
= true;
409 case USER_RECORD_SIGNED
:
410 log_info("Home %s is signed by our key (and others), accepting.", hr
->user_name
);
411 *ret_signed_locally
= false;
414 case USER_RECORD_FOREIGN
:
415 log_info("Home %s is signed by foreign key we like, accepting.", hr
->user_name
);
416 *ret_signed_locally
= false;
419 case USER_RECORD_UNSIGNED
:
420 sd_bus_error_setf(ret_error
, BUS_ERROR_BAD_SIGNATURE
, "User record %s is not signed at all, refusing.", hr
->user_name
);
421 return log_error_errno(SYNTHETIC_ERRNO(EPERM
), "Home %s contains user record that is not signed at all, refusing.", hr
->user_name
);
424 sd_bus_error_setf(ret_error
, BUS_ERROR_BAD_SIGNATURE
, "User record %s is not signed by any known key, refusing.", hr
->user_name
);
425 return log_error_errno(is_signed
, "Home %s contains user record that is not signed by any known key, refusing.", hr
->user_name
);
428 assert(is_signed
< 0);
429 return log_error_errno(is_signed
, "Failed to verify signature on user record for %s, refusing fixation: %m", hr
->user_name
);
433 static int convert_worker_errno(Home
*h
, int e
, sd_bus_error
*error
) {
434 /* Converts the error numbers the worker process returned into somewhat sensible dbus errors */
439 return sd_bus_error_setf(error
, BUS_ERROR_BAD_HOME_SIZE
, "File systems of this type cannot be shrunk");
441 return sd_bus_error_setf(error
, BUS_ERROR_BAD_HOME_SIZE
, "File systems of this type can only be shrunk offline");
443 return sd_bus_error_setf(error
, BUS_ERROR_BAD_HOME_SIZE
, "File system size too small");
445 return sd_bus_error_setf(error
, SD_BUS_ERROR_NOT_SUPPORTED
, "System does not support selected storage backend");
446 case -EPROTONOSUPPORT
:
447 return sd_bus_error_setf(error
, SD_BUS_ERROR_NOT_SUPPORTED
, "System does not support selected file system");
449 return sd_bus_error_setf(error
, SD_BUS_ERROR_NOT_SUPPORTED
, "Operation not supported on storage backend");
450 case -ESOCKTNOSUPPORT
:
451 return sd_bus_error_setf(error
, SD_BUS_ERROR_NOT_SUPPORTED
, "Operation not supported on file system");
453 return sd_bus_error_setf(error
, BUS_ERROR_BAD_PASSWORD
, "Password for home %s is incorrect or not sufficient for authentication.", h
->user_name
);
455 return sd_bus_error_setf(error
, BUS_ERROR_BAD_PASSWORD_AND_NO_TOKEN
, "Password for home %s is incorrect or not sufficient, and configured security token not found either.", h
->user_name
);
457 return sd_bus_error_setf(error
, BUS_ERROR_TOKEN_PIN_NEEDED
, "PIN for security token required.");
459 return sd_bus_error_setf(error
, BUS_ERROR_TOKEN_PROTECTED_AUTHENTICATION_PATH_NEEDED
, "Security token requires protected authentication path.");
461 return sd_bus_error_setf(error
, BUS_ERROR_TOKEN_PIN_LOCKED
, "PIN of security token locked.");
463 return sd_bus_error_setf(error
, BUS_ERROR_TOKEN_BAD_PIN
, "Bad PIN of security token.");
465 return sd_bus_error_setf(error
, BUS_ERROR_TOKEN_BAD_PIN_FEW_TRIES_LEFT
, "Bad PIN of security token, and only a few tries left.");
467 return sd_bus_error_setf(error
, BUS_ERROR_TOKEN_BAD_PIN_ONE_TRY_LEFT
, "Bad PIN of security token, and only one try left.");
469 return sd_bus_error_setf(error
, BUS_ERROR_HOME_BUSY
, "Home %s is currently being used, or an operation on home %s is currently being executed.", h
->user_name
, h
->user_name
);
471 return sd_bus_error_setf(error
, BUS_ERROR_HOME_NOT_ACTIVE
, "Home %s is currently not active", h
->user_name
);
473 return sd_bus_error_setf(error
, BUS_ERROR_NO_DISK_SPACE
, "Not enough disk space for home %s", h
->user_name
);
475 return sd_bus_error_setf(error
, BUS_ERROR_HOME_CANT_AUTHENTICATE
, "Home %s has no password or other authentication mechanism defined.", h
->user_name
);
481 static void home_count_bad_authentication(Home
*h
, bool save
) {
486 r
= user_record_bad_authentication(h
->record
);
488 log_warning_errno(r
, "Failed to increase bad authentication counter, ignoring: %m");
493 r
= home_save_record(h
);
495 log_warning_errno(r
, "Failed to write home record to disk, ignoring: %m");
499 static void home_fixate_finish(Home
*h
, int ret
, UserRecord
*hr
) {
500 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
501 _cleanup_(user_record_unrefp
) UserRecord
*secret
= NULL
;
506 assert(IN_SET(h
->state
, HOME_FIXATING
, HOME_FIXATING_FOR_ACTIVATION
, HOME_FIXATING_FOR_ACQUIRE
));
508 secret
= TAKE_PTR(h
->secret
); /* Take possession */
512 (void) home_count_bad_authentication(h
, false);
514 (void) convert_worker_errno(h
, ret
, &error
);
515 r
= log_error_errno(ret
, "Fixation failed: %m");
519 r
= log_error_errno(SYNTHETIC_ERRNO(EIO
), "Did not receive user record from worker process, fixation failed.");
523 r
= home_verify_user_record(h
, hr
, &signed_locally
, &error
);
527 r
= home_set_record(h
, hr
);
529 log_error_errno(r
, "Failed to update home record: %m");
533 h
->signed_locally
= signed_locally
;
535 /* When we finished fixating (and don't follow-up with activation), let's count this as good authentication */
536 if (h
->state
== HOME_FIXATING
) {
537 r
= user_record_good_authentication(h
->record
);
539 log_warning_errno(r
, "Failed to increase good authentication counter, ignoring: %m");
542 r
= home_save_record(h
);
544 log_warning_errno(r
, "Failed to write home record to disk, ignoring: %m");
546 if (IN_SET(h
->state
, HOME_FIXATING_FOR_ACTIVATION
, HOME_FIXATING_FOR_ACQUIRE
)) {
548 r
= home_start_work(h
, "activate", h
->record
, secret
);
550 h
->current_operation
= operation_result_unref(h
->current_operation
, r
, NULL
);
551 home_set_state(h
, _HOME_STATE_INVALID
);
553 home_set_state(h
, h
->state
== HOME_FIXATING_FOR_ACTIVATION
? HOME_ACTIVATING
: HOME_ACTIVATING_FOR_ACQUIRE
);
558 log_debug("Fixation of %s completed.", h
->user_name
);
560 h
->current_operation
= operation_result_unref(h
->current_operation
, 0, NULL
);
562 /* Reset the state to "invalid", which makes home_get_state() test if the image exists and returns
563 * HOME_ABSENT vs. HOME_INACTIVE as necessary. */
564 home_set_state(h
, _HOME_STATE_INVALID
);
568 /* If fixation fails, we stay in unfixated state! */
569 h
->current_operation
= operation_result_unref(h
->current_operation
, r
, &error
);
570 home_set_state(h
, HOME_UNFIXATED
);
573 static void home_activate_finish(Home
*h
, int ret
, UserRecord
*hr
) {
574 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
578 assert(IN_SET(h
->state
, HOME_ACTIVATING
, HOME_ACTIVATING_FOR_ACQUIRE
));
582 home_count_bad_authentication(h
, true);
584 (void) convert_worker_errno(h
, ret
, &error
);
585 r
= log_error_errno(ret
, "Activation failed: %m");
592 r
= home_verify_user_record(h
, hr
, &signed_locally
, &error
);
596 r
= home_set_record(h
, hr
);
598 log_error_errno(r
, "Failed to update home record, ignoring: %m");
602 h
->signed_locally
= signed_locally
;
604 r
= user_record_good_authentication(h
->record
);
606 log_warning_errno(r
, "Failed to increase good authentication counter, ignoring: %m");
608 r
= home_save_record(h
);
610 log_warning_errno(r
, "Failed to write home record to disk, ignoring: %m");
613 log_debug("Activation of %s completed.", h
->user_name
);
617 h
->current_operation
= operation_result_unref(h
->current_operation
, r
, &error
);
618 home_set_state(h
, _HOME_STATE_INVALID
);
621 static void home_deactivate_finish(Home
*h
, int ret
, UserRecord
*hr
) {
622 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
626 assert(h
->state
== HOME_DEACTIVATING
);
627 assert(!hr
); /* We don't expect a record on this operation */
630 (void) convert_worker_errno(h
, ret
, &error
);
631 r
= log_error_errno(ret
, "Deactivation of %s failed: %m", h
->user_name
);
635 log_debug("Deactivation of %s completed.", h
->user_name
);
639 h
->current_operation
= operation_result_unref(h
->current_operation
, r
, &error
);
640 home_set_state(h
, _HOME_STATE_INVALID
);
643 static void home_remove_finish(Home
*h
, int ret
, UserRecord
*hr
) {
644 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
649 assert(h
->state
== HOME_REMOVING
);
650 assert(!hr
); /* We don't expect a record on this operation */
654 if (ret
< 0 && ret
!= -EALREADY
) {
655 (void) convert_worker_errno(h
, ret
, &error
);
656 r
= log_error_errno(ret
, "Removing %s failed: %m", h
->user_name
);
660 /* For a couple of storage types we can't delete the actual data storage when called (such as LUKS on
661 * partitions like USB sticks, or so). Sometimes these storage locations are among those we normally
662 * automatically discover in /home or in udev. When such a home is deleted let's hence issue a rescan
663 * after completion, so that "unfixated" entries are rediscovered. */
664 if (!IN_SET(user_record_test_image_path(h
->record
), USER_TEST_UNDEFINED
, USER_TEST_ABSENT
))
665 manager_enqueue_rescan(m
);
667 /* The image is now removed from disk. Now also remove our stored record */
668 r
= home_unlink_record(h
);
670 log_error_errno(r
, "Removing record file failed: %m");
674 log_debug("Removal of %s completed.", h
->user_name
);
675 h
->current_operation
= operation_result_unref(h
->current_operation
, 0, NULL
);
677 /* Unload this record from memory too now. */
682 h
->current_operation
= operation_result_unref(h
->current_operation
, r
, &error
);
683 home_set_state(h
, _HOME_STATE_INVALID
);
686 static void home_create_finish(Home
*h
, int ret
, UserRecord
*hr
) {
690 assert(h
->state
== HOME_CREATING
);
693 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
695 (void) convert_worker_errno(h
, ret
, &error
);
696 log_error_errno(ret
, "Operation on %s failed: %m", h
->user_name
);
697 h
->current_operation
= operation_result_unref(h
->current_operation
, ret
, &error
);
699 if (h
->unregister_on_failure
) {
700 (void) home_unlink_record(h
);
705 home_set_state(h
, _HOME_STATE_INVALID
);
710 r
= home_set_record(h
, hr
);
712 log_warning_errno(r
, "Failed to update home record, ignoring: %m");
715 r
= home_save_record(h
);
717 log_warning_errno(r
, "Failed to save record to disk, ignoring: %m");
719 log_debug("Creation of %s completed.", h
->user_name
);
721 h
->current_operation
= operation_result_unref(h
->current_operation
, 0, NULL
);
722 home_set_state(h
, _HOME_STATE_INVALID
);
725 static void home_change_finish(Home
*h
, int ret
, UserRecord
*hr
) {
726 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
733 (void) home_count_bad_authentication(h
, true);
735 (void) convert_worker_errno(h
, ret
, &error
);
736 r
= log_error_errno(ret
, "Change operation failed: %m");
741 r
= home_set_record(h
, hr
);
743 log_warning_errno(r
, "Failed to update home record, ignoring: %m");
745 r
= user_record_good_authentication(h
->record
);
747 log_warning_errno(r
, "Failed to increase good authentication counter, ignoring: %m");
749 r
= home_save_record(h
);
751 log_warning_errno(r
, "Failed to write home record to disk, ignoring: %m");
755 log_debug("Change operation of %s completed.", h
->user_name
);
759 h
->current_operation
= operation_result_unref(h
->current_operation
, r
, &error
);
760 home_set_state(h
, _HOME_STATE_INVALID
);
763 static void home_locking_finish(Home
*h
, int ret
, UserRecord
*hr
) {
764 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
768 assert(h
->state
== HOME_LOCKING
);
771 (void) convert_worker_errno(h
, ret
, &error
);
772 r
= log_error_errno(ret
, "Locking operation failed: %m");
776 log_debug("Locking operation of %s completed.", h
->user_name
);
777 h
->current_operation
= operation_result_unref(h
->current_operation
, 0, NULL
);
778 home_set_state(h
, HOME_LOCKED
);
782 /* If a specific home doesn't know the concept of locking, then that's totally OK, don't propagate
783 * the error if we are executing a LockAllHomes() operation. */
785 if (h
->current_operation
->type
== OPERATION_LOCK_ALL
&& r
== -ENOTTY
)
786 h
->current_operation
= operation_result_unref(h
->current_operation
, 0, NULL
);
788 h
->current_operation
= operation_result_unref(h
->current_operation
, r
, &error
);
790 home_set_state(h
, _HOME_STATE_INVALID
);
793 static void home_unlocking_finish(Home
*h
, int ret
, UserRecord
*hr
) {
794 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
798 assert(IN_SET(h
->state
, HOME_UNLOCKING
, HOME_UNLOCKING_FOR_ACQUIRE
));
802 (void) home_count_bad_authentication(h
, true);
804 (void) convert_worker_errno(h
, ret
, &error
);
805 r
= log_error_errno(ret
, "Unlocking operation failed: %m");
807 /* Revert to locked state */
808 home_set_state(h
, HOME_LOCKED
);
809 h
->current_operation
= operation_result_unref(h
->current_operation
, r
, &error
);
813 r
= user_record_good_authentication(h
->record
);
815 log_warning_errno(r
, "Failed to increase good authentication counter, ignoring: %m");
817 r
= home_save_record(h
);
819 log_warning_errno(r
, "Failed to write home record to disk, ignoring: %m");
822 log_debug("Unlocking operation of %s completed.", h
->user_name
);
824 h
->current_operation
= operation_result_unref(h
->current_operation
, r
, &error
);
825 home_set_state(h
, _HOME_STATE_INVALID
);
829 static void home_authenticating_finish(Home
*h
, int ret
, UserRecord
*hr
) {
830 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
834 assert(IN_SET(h
->state
, HOME_AUTHENTICATING
, HOME_AUTHENTICATING_WHILE_ACTIVE
, HOME_AUTHENTICATING_FOR_ACQUIRE
));
838 (void) home_count_bad_authentication(h
, true);
840 (void) convert_worker_errno(h
, ret
, &error
);
841 r
= log_error_errno(ret
, "Authentication failed: %m");
846 r
= home_set_record(h
, hr
);
848 log_warning_errno(r
, "Failed to update home record, ignoring: %m");
850 r
= user_record_good_authentication(h
->record
);
852 log_warning_errno(r
, "Failed to increase good authentication counter, ignoring: %m");
854 r
= home_save_record(h
);
856 log_warning_errno(r
, "Failed to write home record to disk, ignoring: %m");
860 log_debug("Authentication of %s completed.", h
->user_name
);
864 h
->current_operation
= operation_result_unref(h
->current_operation
, r
, &error
);
865 home_set_state(h
, _HOME_STATE_INVALID
);
868 static int home_on_worker_process(sd_event_source
*s
, const siginfo_t
*si
, void *userdata
) {
869 _cleanup_(user_record_unrefp
) UserRecord
*hr
= NULL
;
877 assert(h
->worker_pid
== si
->si_pid
);
878 assert(h
->worker_event_source
);
879 assert(h
->worker_stdout_fd
>= 0);
881 (void) hashmap_remove_value(h
->manager
->homes_by_worker_pid
, PID_TO_PTR(h
->worker_pid
), h
);
884 h
->worker_event_source
= sd_event_source_unref(h
->worker_event_source
);
886 if (si
->si_code
!= CLD_EXITED
) {
887 assert(IN_SET(si
->si_code
, CLD_KILLED
, CLD_DUMPED
));
888 ret
= log_debug_errno(SYNTHETIC_ERRNO(EPROTO
), "Worker process died abnormally with signal %s.", signal_to_string(si
->si_status
));
889 } else if (si
->si_status
!= EXIT_SUCCESS
) {
890 /* If we received an error code via sd_notify(), use it */
891 if (h
->worker_error_code
!= 0)
892 ret
= log_debug_errno(h
->worker_error_code
, "Worker reported error code %s.", errno_to_name(h
->worker_error_code
));
894 ret
= log_debug_errno(SYNTHETIC_ERRNO(EPROTO
), "Worker exited with exit code %i.", si
->si_status
);
896 ret
= home_parse_worker_stdout(TAKE_FD(h
->worker_stdout_fd
), &hr
);
898 h
->worker_stdout_fd
= safe_close(h
->worker_stdout_fd
);
903 case HOME_FIXATING_FOR_ACTIVATION
:
904 case HOME_FIXATING_FOR_ACQUIRE
:
905 home_fixate_finish(h
, ret
, hr
);
908 case HOME_ACTIVATING
:
909 case HOME_ACTIVATING_FOR_ACQUIRE
:
910 home_activate_finish(h
, ret
, hr
);
913 case HOME_DEACTIVATING
:
914 home_deactivate_finish(h
, ret
, hr
);
918 home_locking_finish(h
, ret
, hr
);
922 case HOME_UNLOCKING_FOR_ACQUIRE
:
923 home_unlocking_finish(h
, ret
, hr
);
927 home_create_finish(h
, ret
, hr
);
931 home_remove_finish(h
, ret
, hr
);
935 case HOME_UPDATING_WHILE_ACTIVE
:
937 case HOME_RESIZING_WHILE_ACTIVE
:
939 case HOME_PASSWD_WHILE_ACTIVE
:
940 home_change_finish(h
, ret
, hr
);
943 case HOME_AUTHENTICATING
:
944 case HOME_AUTHENTICATING_WHILE_ACTIVE
:
945 case HOME_AUTHENTICATING_FOR_ACQUIRE
:
946 home_authenticating_finish(h
, ret
, hr
);
950 assert_not_reached("Unexpected state after worker exited");
956 static int home_start_work(Home
*h
, const char *verb
, UserRecord
*hr
, UserRecord
*secret
) {
957 _cleanup_(json_variant_unrefp
) JsonVariant
*v
= NULL
;
958 _cleanup_(erase_and_freep
) char *formatted
= NULL
;
959 _cleanup_close_
int stdin_fd
= -1, stdout_fd
= -1;
967 if (h
->worker_pid
!= 0)
970 assert(h
->worker_stdout_fd
< 0);
971 assert(!h
->worker_event_source
);
973 v
= json_variant_ref(hr
->json
);
976 JsonVariant
*sub
= NULL
;
978 sub
= json_variant_by_key(secret
->json
, "secret");
982 r
= json_variant_set_field(&v
, "secret", sub
);
987 r
= json_variant_format(v
, 0, &formatted
);
991 stdin_fd
= acquire_data_fd(formatted
, strlen(formatted
), 0);
995 log_debug("Sending to worker: %s", formatted
);
997 stdout_fd
= memfd_create("homework-stdout", MFD_CLOEXEC
);
1001 r
= safe_fork_full("(sd-homework)",
1002 (int[]) { stdin_fd
, stdout_fd
}, 2,
1003 FORK_RESET_SIGNALS
|FORK_CLOSE_ALL_FDS
|FORK_DEATHSIG
|FORK_LOG
, &pid
);
1007 const char *homework
;
1011 if (setenv("NOTIFY_SOCKET", "/run/systemd/home/notify", 1) < 0) {
1012 log_error_errno(errno
, "Failed to set $NOTIFY_SOCKET: %m");
1013 _exit(EXIT_FAILURE
);
1016 if (h
->manager
->default_storage
>= 0)
1017 if (setenv("SYSTEMD_HOME_DEFAULT_STORAGE", user_storage_to_string(h
->manager
->default_storage
), 1) < 0) {
1018 log_error_errno(errno
, "Failed to set $SYSTEMD_HOME_DEFAULT_STORAGE: %m");
1019 _exit(EXIT_FAILURE
);
1022 if (h
->manager
->default_file_system_type
)
1023 if (setenv("SYSTEMD_HOME_DEFAULT_FILE_SYSTEM_TYPE", h
->manager
->default_file_system_type
, 1) < 0) {
1024 log_error_errno(errno
, "Failed to set $SYSTEMD_HOME_DEFAULT_FILE_SYSTEM_TYPE: %m");
1025 _exit(EXIT_FAILURE
);
1028 r
= rearrange_stdio(stdin_fd
, stdout_fd
, STDERR_FILENO
);
1030 log_error_errno(r
, "Failed to rearrange stdin/stdout/stderr: %m");
1031 _exit(EXIT_FAILURE
);
1034 stdin_fd
= stdout_fd
= -1; /* have been invalidated by rearrange_stdio() */
1036 /* Allow overriding the homework path via an environment variable, to make debugging
1038 homework
= getenv("SYSTEMD_HOMEWORK_PATH") ?: SYSTEMD_HOMEWORK_PATH
;
1040 execl(homework
, homework
, verb
, NULL
);
1041 log_error_errno(errno
, "Failed to invoke " SYSTEMD_HOMEWORK_PATH
": %m");
1042 _exit(EXIT_FAILURE
);
1045 r
= sd_event_add_child(h
->manager
->event
, &h
->worker_event_source
, pid
, WEXITED
, home_on_worker_process
, h
);
1049 (void) sd_event_source_set_description(h
->worker_event_source
, "worker");
1051 r
= hashmap_put(h
->manager
->homes_by_worker_pid
, PID_TO_PTR(pid
), h
);
1053 h
->worker_event_source
= sd_event_source_unref(h
->worker_event_source
);
1057 h
->worker_stdout_fd
= TAKE_FD(stdout_fd
);
1058 h
->worker_pid
= pid
;
1059 h
->worker_error_code
= 0;
1064 static int home_ratelimit(Home
*h
, sd_bus_error
*error
) {
1069 ret
= user_record_ratelimit(h
->record
);
1073 if (h
->state
!= HOME_UNFIXATED
) {
1074 r
= home_save_record(h
);
1076 log_warning_errno(r
, "Failed to save updated record, ignoring: %m");
1080 char buf
[FORMAT_TIMESPAN_MAX
];
1083 n
= now(CLOCK_REALTIME
);
1084 t
= user_record_ratelimit_next_try(h
->record
);
1086 if (t
!= USEC_INFINITY
&& t
> n
)
1087 return sd_bus_error_setf(error
, BUS_ERROR_AUTHENTICATION_LIMIT_HIT
, "Too many login attempts, please try again in %s!",
1088 format_timespan(buf
, sizeof(buf
), t
- n
, USEC_PER_SEC
));
1090 return sd_bus_error_setf(error
, BUS_ERROR_AUTHENTICATION_LIMIT_HIT
, "Too many login attempts, please try again later.");
1096 static int home_fixate_internal(
1099 HomeState for_state
,
1100 sd_bus_error
*error
) {
1105 assert(IN_SET(for_state
, HOME_FIXATING
, HOME_FIXATING_FOR_ACTIVATION
, HOME_FIXATING_FOR_ACQUIRE
));
1107 r
= home_start_work(h
, "inspect", h
->record
, secret
);
1111 if (for_state
== HOME_FIXATING_FOR_ACTIVATION
) {
1112 /* Remember the secret data, since we need it for the activation again, later on. */
1113 user_record_unref(h
->secret
);
1114 h
->secret
= user_record_ref(secret
);
1117 home_set_state(h
, for_state
);
1121 int home_fixate(Home
*h
, UserRecord
*secret
, sd_bus_error
*error
) {
1126 switch (home_get_state(h
)) {
1128 return sd_bus_error_setf(error
, BUS_ERROR_HOME_ABSENT
, "Home %s is currently missing or not plugged in.", h
->user_name
);
1132 return sd_bus_error_setf(error
, BUS_ERROR_HOME_ALREADY_FIXATED
, "Home %s is already fixated.", h
->user_name
);
1133 case HOME_UNFIXATED
:
1136 return sd_bus_error_setf(error
, BUS_ERROR_HOME_BUSY
, "An operation on home %s is currently being executed.", h
->user_name
);
1139 r
= home_ratelimit(h
, error
);
1143 return home_fixate_internal(h
, secret
, HOME_FIXATING
, error
);
1146 static int home_activate_internal(Home
*h
, UserRecord
*secret
, HomeState for_state
, sd_bus_error
*error
) {
1150 assert(IN_SET(for_state
, HOME_ACTIVATING
, HOME_ACTIVATING_FOR_ACQUIRE
));
1152 r
= home_start_work(h
, "activate", h
->record
, secret
);
1156 home_set_state(h
, for_state
);
1160 int home_activate(Home
*h
, UserRecord
*secret
, sd_bus_error
*error
) {
1165 switch (home_get_state(h
)) {
1166 case HOME_UNFIXATED
:
1167 return home_fixate_internal(h
, secret
, HOME_FIXATING_FOR_ACTIVATION
, error
);
1169 return sd_bus_error_setf(error
, BUS_ERROR_HOME_ABSENT
, "Home %s is currently missing or not plugged in.", h
->user_name
);
1171 return sd_bus_error_setf(error
, BUS_ERROR_HOME_ALREADY_ACTIVE
, "Home %s is already active.", h
->user_name
);
1173 return sd_bus_error_setf(error
, BUS_ERROR_HOME_LOCKED
, "Home %s is currently locked.", h
->user_name
);
1177 return sd_bus_error_setf(error
, BUS_ERROR_HOME_BUSY
, "An operation on home %s is currently being executed.", h
->user_name
);
1180 r
= home_ratelimit(h
, error
);
1184 return home_activate_internal(h
, secret
, HOME_ACTIVATING
, error
);
1187 static int home_authenticate_internal(Home
*h
, UserRecord
*secret
, HomeState for_state
, sd_bus_error
*error
) {
1191 assert(IN_SET(for_state
, HOME_AUTHENTICATING
, HOME_AUTHENTICATING_WHILE_ACTIVE
, HOME_AUTHENTICATING_FOR_ACQUIRE
));
1193 r
= home_start_work(h
, "inspect", h
->record
, secret
);
1197 home_set_state(h
, for_state
);
1201 int home_authenticate(Home
*h
, UserRecord
*secret
, sd_bus_error
*error
) {
1207 state
= home_get_state(h
);
1210 return sd_bus_error_setf(error
, BUS_ERROR_HOME_ABSENT
, "Home %s is currently missing or not plugged in.", h
->user_name
);
1212 return sd_bus_error_setf(error
, BUS_ERROR_HOME_LOCKED
, "Home %s is currently locked.", h
->user_name
);
1213 case HOME_UNFIXATED
:
1218 return sd_bus_error_setf(error
, BUS_ERROR_HOME_BUSY
, "An operation on home %s is currently being executed.", h
->user_name
);
1221 r
= home_ratelimit(h
, error
);
1225 return home_authenticate_internal(h
, secret
, state
== HOME_ACTIVE
? HOME_AUTHENTICATING_WHILE_ACTIVE
: HOME_AUTHENTICATING
, error
);
1228 static int home_deactivate_internal(Home
*h
, bool force
, sd_bus_error
*error
) {
1233 r
= home_start_work(h
, force
? "deactivate-force" : "deactivate", h
->record
, NULL
);
1237 home_set_state(h
, HOME_DEACTIVATING
);
1241 int home_deactivate(Home
*h
, bool force
, sd_bus_error
*error
) {
1244 switch (home_get_state(h
)) {
1245 case HOME_UNFIXATED
:
1248 return sd_bus_error_setf(error
, BUS_ERROR_HOME_NOT_ACTIVE
, "Home %s not active.", h
->user_name
);
1250 return sd_bus_error_setf(error
, BUS_ERROR_HOME_LOCKED
, "Home %s is currently locked.", h
->user_name
);
1254 return sd_bus_error_setf(error
, BUS_ERROR_HOME_BUSY
, "An operation on home %s is currently being executed.", h
->user_name
);
1257 return home_deactivate_internal(h
, force
, error
);
1260 int home_create(Home
*h
, UserRecord
*secret
, sd_bus_error
*error
) {
1265 switch (home_get_state(h
)) {
1267 if (h
->record
->storage
< 0)
1268 break; /* if no storage is defined we don't know what precisely to look for, hence
1269 * HOME_INACTIVE is OK in that case too. */
1271 if (IN_SET(user_record_test_image_path(h
->record
), USER_TEST_MAYBE
, USER_TEST_UNDEFINED
))
1272 break; /* And if the image path test isn't conclusive, let's also go on */
1275 case HOME_UNFIXATED
:
1276 return sd_bus_error_setf(error
, BUS_ERROR_HOME_EXISTS
, "Home of user %s already exists.", h
->user_name
);
1282 return sd_bus_error_setf(error
, BUS_ERROR_HOME_BUSY
, "Home %s is currently being used, or an operation on home %s is currently being executed.", h
->user_name
, h
->user_name
);
1285 if (h
->record
->enforce_password_policy
== false)
1286 log_debug("Password quality check turned off for account, skipping.");
1288 r
= quality_check_password(h
->record
, secret
, error
);
1293 r
= home_start_work(h
, "create", h
->record
, secret
);
1297 home_set_state(h
, HOME_CREATING
);
1301 int home_remove(Home
*h
, sd_bus_error
*error
) {
1307 state
= home_get_state(h
);
1309 case HOME_ABSENT
: /* If the home directory is absent, then this is just like unregistering */
1310 return home_unregister(h
, error
);
1312 return sd_bus_error_setf(error
, BUS_ERROR_HOME_LOCKED
, "Home %s is currently locked.", h
->user_name
);
1313 case HOME_UNFIXATED
:
1318 return sd_bus_error_setf(error
, BUS_ERROR_HOME_BUSY
, "Home %s is currently being used, or an operation on home %s is currently being executed.", h
->user_name
, h
->user_name
);
1321 r
= home_start_work(h
, "remove", h
->record
, NULL
);
1325 home_set_state(h
, HOME_REMOVING
);
1329 static int user_record_extend_with_binding(UserRecord
*hr
, UserRecord
*with_binding
, UserRecordLoadFlags flags
, UserRecord
**ret
) {
1330 _cleanup_(json_variant_unrefp
) JsonVariant
*v
= NULL
;
1331 _cleanup_(user_record_unrefp
) UserRecord
*nr
= NULL
;
1332 JsonVariant
*binding
;
1336 assert(with_binding
);
1339 assert_se(v
= json_variant_ref(hr
->json
));
1341 binding
= json_variant_by_key(with_binding
->json
, "binding");
1343 r
= json_variant_set_field(&v
, "binding", binding
);
1348 nr
= user_record_new();
1352 r
= user_record_load(nr
, v
, flags
);
1356 *ret
= TAKE_PTR(nr
);
1360 static int home_update_internal(Home
*h
, const char *verb
, UserRecord
*hr
, UserRecord
*secret
, sd_bus_error
*error
) {
1361 _cleanup_(user_record_unrefp
) UserRecord
*new_hr
= NULL
, *saved_secret
= NULL
, *signed_hr
= NULL
;
1368 if (!user_record_compatible(hr
, h
->record
))
1369 return sd_bus_error_setf(error
, BUS_ERROR_HOME_RECORD_MISMATCH
, "Updated user record is not compatible with existing one.");
1370 c
= user_record_compare_last_change(hr
, h
->record
); /* refuse downgrades */
1372 return sd_bus_error_setf(error
, BUS_ERROR_HOME_RECORD_DOWNGRADE
, "Refusing to update to older home record.");
1374 if (!secret
&& FLAGS_SET(hr
->mask
, USER_RECORD_SECRET
)) {
1375 r
= user_record_clone(hr
, USER_RECORD_EXTRACT_SECRET
, &saved_secret
);
1379 secret
= saved_secret
;
1382 r
= manager_verify_user_record(h
->manager
, hr
);
1385 case USER_RECORD_UNSIGNED
:
1386 if (h
->signed_locally
<= 0) /* If the existing record is not owned by us, don't accept an
1387 * unsigned new record. i.e. only implicitly sign new records
1388 * that where previously signed by us too. */
1389 return sd_bus_error_setf(error
, BUS_ERROR_HOME_RECORD_SIGNED
, "Home %s is signed and cannot be modified locally.", h
->user_name
);
1391 /* The updated record is not signed, then do so now */
1392 r
= manager_sign_user_record(h
->manager
, hr
, &signed_hr
, error
);
1399 case USER_RECORD_SIGNED_EXCLUSIVE
:
1400 case USER_RECORD_SIGNED
:
1401 case USER_RECORD_FOREIGN
:
1402 /* Has already been signed. Great! */
1410 r
= user_record_extend_with_binding(hr
, h
->record
, USER_RECORD_LOAD_MASK_SECRET
, &new_hr
);
1415 /* different payload but same lastChangeUSec field? That's not cool! */
1417 r
= user_record_masked_equal(new_hr
, h
->record
, USER_RECORD_REGULAR
|USER_RECORD_PRIVILEGED
|USER_RECORD_PER_MACHINE
);
1421 return sd_bus_error_setf(error
, BUS_ERROR_HOME_RECORD_MISMATCH
, "Home record different but timestamp remained the same, refusing.");
1424 r
= home_start_work(h
, verb
, new_hr
, secret
);
1431 int home_update(Home
*h
, UserRecord
*hr
, sd_bus_error
*error
) {
1438 state
= home_get_state(h
);
1440 case HOME_UNFIXATED
:
1441 return sd_bus_error_setf(error
, BUS_ERROR_HOME_UNFIXATED
, "Home %s has not been fixated yet.", h
->user_name
);
1443 return sd_bus_error_setf(error
, BUS_ERROR_HOME_ABSENT
, "Home %s is currently missing or not plugged in.", h
->user_name
);
1445 return sd_bus_error_setf(error
, BUS_ERROR_HOME_LOCKED
, "Home %s is currently locked.", h
->user_name
);
1450 return sd_bus_error_setf(error
, BUS_ERROR_HOME_BUSY
, "An operation on home %s is currently being executed.", h
->user_name
);
1453 r
= home_ratelimit(h
, error
);
1457 r
= home_update_internal(h
, "update", hr
, NULL
, error
);
1461 home_set_state(h
, state
== HOME_ACTIVE
? HOME_UPDATING_WHILE_ACTIVE
: HOME_UPDATING
);
1465 int home_resize(Home
*h
, uint64_t disk_size
, UserRecord
*secret
, sd_bus_error
*error
) {
1466 _cleanup_(user_record_unrefp
) UserRecord
*c
= NULL
;
1472 state
= home_get_state(h
);
1474 case HOME_UNFIXATED
:
1475 return sd_bus_error_setf(error
, BUS_ERROR_HOME_UNFIXATED
, "Home %s has not been fixated yet.", h
->user_name
);
1477 return sd_bus_error_setf(error
, BUS_ERROR_HOME_ABSENT
, "Home %s is currently missing or not plugged in.", h
->user_name
);
1479 return sd_bus_error_setf(error
, BUS_ERROR_HOME_LOCKED
, "Home %s is currently locked.", h
->user_name
);
1484 return sd_bus_error_setf(error
, BUS_ERROR_HOME_BUSY
, "An operation on home %s is currently being executed.", h
->user_name
);
1487 r
= home_ratelimit(h
, error
);
1491 if (disk_size
== UINT64_MAX
|| disk_size
== h
->record
->disk_size
) {
1492 if (h
->record
->disk_size
== UINT64_MAX
)
1493 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "No disk size to resize to specified.");
1495 c
= user_record_ref(h
->record
); /* Shortcut if size is unspecified or matches the record */
1497 _cleanup_(user_record_unrefp
) UserRecord
*signed_c
= NULL
;
1499 if (h
->signed_locally
<= 0) /* Don't allow changing of records not signed only by us */
1500 return sd_bus_error_setf(error
, BUS_ERROR_HOME_RECORD_SIGNED
, "Home %s is signed and cannot be modified locally.", h
->user_name
);
1502 r
= user_record_clone(h
->record
, USER_RECORD_LOAD_REFUSE_SECRET
, &c
);
1506 r
= user_record_set_disk_size(c
, disk_size
);
1508 return sd_bus_error_setf(error
, BUS_ERROR_BAD_HOME_SIZE
, "Requested size for home %s out of acceptable range.", h
->user_name
);
1512 r
= user_record_update_last_changed(c
, false);
1514 return sd_bus_error_setf(error
, BUS_ERROR_HOME_RECORD_MISMATCH
, "Record last change time of %s is newer than current time, cannot update.", h
->user_name
);
1518 r
= manager_sign_user_record(h
->manager
, c
, &signed_c
, error
);
1522 user_record_unref(c
);
1523 c
= TAKE_PTR(signed_c
);
1526 r
= home_update_internal(h
, "resize", c
, secret
, error
);
1530 home_set_state(h
, state
== HOME_ACTIVE
? HOME_RESIZING_WHILE_ACTIVE
: HOME_RESIZING
);
1534 static int home_may_change_password(
1536 sd_bus_error
*error
) {
1542 r
= user_record_test_password_change_required(h
->record
);
1543 if (IN_SET(r
, -EKEYREVOKED
, -EOWNERDEAD
, -EKEYEXPIRED
))
1544 return 0; /* expired in some form, but changing is allowed */
1545 if (IN_SET(r
, -EKEYREJECTED
, -EROFS
))
1546 return sd_bus_error_setf(error
, SD_BUS_ERROR_ACCESS_DENIED
, "Expiration settings of account %s do not allow changing of password.", h
->user_name
);
1548 return log_error_errno(r
, "Failed to test password expiry: %m");
1550 return 0; /* not expired */
1553 int home_passwd(Home
*h
,
1554 UserRecord
*new_secret
,
1555 UserRecord
*old_secret
,
1556 sd_bus_error
*error
) {
1558 _cleanup_(user_record_unrefp
) UserRecord
*c
= NULL
, *merged_secret
= NULL
, *signed_c
= NULL
;
1564 if (h
->signed_locally
<= 0) /* Don't allow changing of records not signed only by us */
1565 return sd_bus_error_setf(error
, BUS_ERROR_HOME_RECORD_SIGNED
, "Home %s is signed and cannot be modified locally.", h
->user_name
);
1567 state
= home_get_state(h
);
1569 case HOME_UNFIXATED
:
1570 return sd_bus_error_setf(error
, BUS_ERROR_HOME_UNFIXATED
, "Home %s has not been fixated yet.", h
->user_name
);
1572 return sd_bus_error_setf(error
, BUS_ERROR_HOME_ABSENT
, "Home %s is currently missing or not plugged in.", h
->user_name
);
1574 return sd_bus_error_setf(error
, BUS_ERROR_HOME_LOCKED
, "Home %s is currently locked.", h
->user_name
);
1579 return sd_bus_error_setf(error
, BUS_ERROR_HOME_BUSY
, "An operation on home %s is currently being executed.", h
->user_name
);
1582 r
= home_ratelimit(h
, error
);
1586 r
= home_may_change_password(h
, error
);
1590 r
= user_record_clone(h
->record
, USER_RECORD_LOAD_REFUSE_SECRET
, &c
);
1594 merged_secret
= user_record_new();
1598 r
= user_record_merge_secret(merged_secret
, old_secret
);
1602 r
= user_record_merge_secret(merged_secret
, new_secret
);
1606 if (!strv_isempty(new_secret
->password
)) {
1607 /* Update the password only if one is specified, otherwise let's just reuse the old password
1608 * data. This is useful as a way to propagate updated user records into the LUKS backends
1611 r
= user_record_make_hashed_password(c
, new_secret
->password
, /* extend = */ false);
1615 r
= user_record_set_password_change_now(c
, -1 /* remove */);
1620 r
= user_record_update_last_changed(c
, true);
1622 return sd_bus_error_setf(error
, BUS_ERROR_HOME_RECORD_MISMATCH
, "Record last change time of %s is newer than current time, cannot update.", h
->user_name
);
1626 r
= manager_sign_user_record(h
->manager
, c
, &signed_c
, error
);
1630 if (c
->enforce_password_policy
== false)
1631 log_debug("Password quality check turned off for account, skipping.");
1633 r
= quality_check_password(c
, merged_secret
, error
);
1638 r
= home_update_internal(h
, "passwd", signed_c
, merged_secret
, error
);
1642 home_set_state(h
, state
== HOME_ACTIVE
? HOME_PASSWD_WHILE_ACTIVE
: HOME_PASSWD
);
1646 int home_unregister(Home
*h
, sd_bus_error
*error
) {
1651 switch (home_get_state(h
)) {
1652 case HOME_UNFIXATED
:
1653 return sd_bus_error_setf(error
, BUS_ERROR_HOME_UNFIXATED
, "Home %s is not registered.", h
->user_name
);
1655 return sd_bus_error_setf(error
, BUS_ERROR_HOME_LOCKED
, "Home %s is currently locked.", h
->user_name
);
1661 return sd_bus_error_setf(error
, BUS_ERROR_HOME_BUSY
, "Home %s is currently being used, or an operation on home %s is currently being executed.", h
->user_name
, h
->user_name
);
1664 r
= home_unlink_record(h
);
1668 /* And destroy the whole entry. The caller needs to be prepared for that. */
1673 int home_lock(Home
*h
, sd_bus_error
*error
) {
1678 switch (home_get_state(h
)) {
1679 case HOME_UNFIXATED
:
1682 return sd_bus_error_setf(error
, BUS_ERROR_HOME_NOT_ACTIVE
, "Home %s is not active.", h
->user_name
);
1684 return sd_bus_error_setf(error
, BUS_ERROR_HOME_LOCKED
, "Home %s is already locked.", h
->user_name
);
1688 return sd_bus_error_setf(error
, BUS_ERROR_HOME_BUSY
, "An operation on home %s is currently being executed.", h
->user_name
);
1691 r
= home_start_work(h
, "lock", h
->record
, NULL
);
1695 home_set_state(h
, HOME_LOCKING
);
1699 static int home_unlock_internal(Home
*h
, UserRecord
*secret
, HomeState for_state
, sd_bus_error
*error
) {
1703 assert(IN_SET(for_state
, HOME_UNLOCKING
, HOME_UNLOCKING_FOR_ACQUIRE
));
1705 r
= home_start_work(h
, "unlock", h
->record
, secret
);
1709 home_set_state(h
, for_state
);
1713 int home_unlock(Home
*h
, UserRecord
*secret
, sd_bus_error
*error
) {
1717 r
= home_ratelimit(h
, error
);
1721 switch (home_get_state(h
)) {
1722 case HOME_UNFIXATED
:
1726 return sd_bus_error_setf(error
, BUS_ERROR_HOME_NOT_LOCKED
, "Home %s is not locked.", h
->user_name
);
1730 return sd_bus_error_setf(error
, BUS_ERROR_HOME_BUSY
, "An operation on home %s is currently being executed.", h
->user_name
);
1733 return home_unlock_internal(h
, secret
, HOME_UNLOCKING
, error
);
1736 HomeState
home_get_state(Home
*h
) {
1739 /* When the state field is initialized, it counts. */
1743 /* Otherwise, let's see if the home directory is mounted. If so, we assume for sure the home
1744 * directory is active */
1745 if (user_record_test_home_directory(h
->record
) == USER_TEST_MOUNTED
)
1748 /* And if we see the image being gone, we report this as absent */
1749 if (user_record_test_image_path(h
->record
) == USER_TEST_ABSENT
)
1752 /* And for all other cases we return "inactive". */
1753 return HOME_INACTIVE
;
1756 void home_process_notify(Home
*h
, char **l
) {
1763 e
= strv_env_get(l
, "ERRNO");
1765 log_debug("Got notify message lacking ERRNO= field, ignoring.");
1769 r
= safe_atoi(e
, &error
);
1771 log_debug_errno(r
, "Failed to parse received error number, ignoring: %s", e
);
1775 log_debug("Error number is out of range: %i", error
);
1779 h
->worker_error_code
= error
;
1782 int home_killall(Home
*h
) {
1783 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1784 _cleanup_free_
char *unit
= NULL
;
1789 if (!uid_is_valid(h
->uid
))
1792 assert(h
->uid
> 0); /* We never should be UID 0 */
1794 /* Let's kill everything matching the specified UID */
1795 r
= safe_fork("(sd-killer)", FORK_RESET_SIGNALS
|FORK_CLOSE_ALL_FDS
|FORK_DEATHSIG
|FORK_WAIT
|FORK_LOG
, NULL
);
1803 gid
= user_record_gid(h
->record
);
1804 if (setresgid(gid
, gid
, gid
) < 0) {
1805 log_error_errno(errno
, "Failed to change GID to " GID_FMT
": %m", gid
);
1806 _exit(EXIT_FAILURE
);
1809 if (setgroups(0, NULL
) < 0) {
1810 log_error_errno(errno
, "Failed to reset auxiliary groups list: %m");
1811 _exit(EXIT_FAILURE
);
1814 if (setresuid(h
->uid
, h
->uid
, h
->uid
) < 0) {
1815 log_error_errno(errno
, "Failed to change UID to " UID_FMT
": %m", h
->uid
);
1816 _exit(EXIT_FAILURE
);
1819 if (kill(-1, SIGKILL
) < 0) {
1820 log_error_errno(errno
, "Failed to kill all processes of UID " UID_FMT
": %m", h
->uid
);
1821 _exit(EXIT_FAILURE
);
1824 _exit(EXIT_SUCCESS
);
1827 /* Let's also kill everything in the user's slice */
1828 if (asprintf(&unit
, "user-" UID_FMT
".slice", h
->uid
) < 0)
1831 r
= sd_bus_call_method(
1833 "org.freedesktop.systemd1",
1834 "/org/freedesktop/systemd1",
1835 "org.freedesktop.systemd1.Manager",
1839 "ssi", unit
, "all", SIGKILL
);
1841 log_full_errno(sd_bus_error_has_name(&error
, BUS_ERROR_NO_SUCH_UNIT
) ? LOG_DEBUG
: LOG_WARNING
,
1842 r
, "Failed to kill login processes of user, ignoring: %s", bus_error_message(&error
, r
));
1847 static int home_get_disk_status_luks(
1850 uint64_t *ret_disk_size
,
1851 uint64_t *ret_disk_usage
,
1852 uint64_t *ret_disk_free
,
1853 uint64_t *ret_disk_ceiling
,
1854 uint64_t *ret_disk_floor
) {
1856 uint64_t disk_size
= UINT64_MAX
, disk_usage
= UINT64_MAX
, disk_free
= UINT64_MAX
,
1857 disk_ceiling
= UINT64_MAX
, disk_floor
= UINT64_MAX
,
1858 stat_used
= UINT64_MAX
, fs_size
= UINT64_MAX
, header_size
= 0;
1865 assert(ret_disk_size
);
1866 assert(ret_disk_usage
);
1867 assert(ret_disk_free
);
1868 assert(ret_disk_ceiling
);
1870 if (state
!= HOME_ABSENT
) {
1873 ip
= user_record_image_path(h
->record
);
1877 if (stat(ip
, &st
) < 0)
1878 log_debug_errno(errno
, "Failed to stat() %s, ignoring: %m", ip
);
1879 else if (S_ISREG(st
.st_mode
)) {
1880 _cleanup_free_
char *parent
= NULL
;
1882 disk_size
= st
.st_size
;
1883 stat_used
= st
.st_blocks
* 512;
1885 parent
= dirname_malloc(ip
);
1889 if (statfs(parent
, &sfs
) < 0)
1890 log_debug_errno(errno
, "Failed to statfs() %s, ignoring: %m", parent
);
1892 disk_ceiling
= stat_used
+ sfs
.f_bsize
* sfs
.f_bavail
;
1894 } else if (S_ISBLK(st
.st_mode
)) {
1895 _cleanup_free_
char *szbuf
= NULL
;
1896 char p
[SYS_BLOCK_PATH_MAX("/size")];
1898 /* Let's read the size off sysfs, so that we don't have to open the device */
1899 xsprintf_sys_block_path(p
, "/size", st
.st_rdev
);
1900 r
= read_one_line_file(p
, &szbuf
);
1902 log_debug_errno(r
, "Failed to read %s, ignoring: %m", p
);
1906 r
= safe_atou64(szbuf
, &sz
);
1908 log_debug_errno(r
, "Failed to parse %s, ignoring: %s", p
, szbuf
);
1910 disk_size
= sz
* 512;
1913 log_debug("Image path is not a block device or regular file, not able to acquire size.");
1917 if (!HOME_STATE_IS_ACTIVE(state
))
1920 hd
= user_record_home_directory(h
->record
);
1924 if (statfs(hd
, &sfs
) < 0) {
1925 log_debug_errno(errno
, "Failed to statfs() %s, ignoring: %m", hd
);
1929 disk_free
= sfs
.f_bsize
* sfs
.f_bavail
;
1930 fs_size
= sfs
.f_bsize
* sfs
.f_blocks
;
1931 if (disk_size
!= UINT64_MAX
&& disk_size
> fs_size
)
1932 header_size
= disk_size
- fs_size
;
1934 /* We take a perspective from the user here (as opposed to from the host): the used disk space is the
1935 * difference from the limit and what's free. This makes a difference if sparse mode is not used: in
1936 * that case the image is pre-allocated and thus appears all used from the host PoV but is not used
1937 * up at all yet from the user's PoV.
1939 * That said, we use use the stat() reported loopback file size as upper boundary: our footprint can
1940 * never be larger than what we take up on the lowest layers. */
1942 if (disk_size
!= UINT64_MAX
&& disk_size
> disk_free
) {
1943 disk_usage
= disk_size
- disk_free
;
1945 if (stat_used
!= UINT64_MAX
&& disk_usage
> stat_used
)
1946 disk_usage
= stat_used
;
1948 disk_usage
= stat_used
;
1950 /* If we have the magic, determine floor preferably by magic */
1951 disk_floor
= minimal_size_by_fs_magic(sfs
.f_type
) + header_size
;
1954 /* If we don't know the magic, go by file system name */
1955 if (disk_floor
== UINT64_MAX
)
1956 disk_floor
= minimal_size_by_fs_name(user_record_file_system_type(h
->record
));
1958 *ret_disk_size
= disk_size
;
1959 *ret_disk_usage
= disk_usage
;
1960 *ret_disk_free
= disk_free
;
1961 *ret_disk_ceiling
= disk_ceiling
;
1962 *ret_disk_floor
= disk_floor
;
1967 static int home_get_disk_status_directory(
1970 uint64_t *ret_disk_size
,
1971 uint64_t *ret_disk_usage
,
1972 uint64_t *ret_disk_free
,
1973 uint64_t *ret_disk_ceiling
,
1974 uint64_t *ret_disk_floor
) {
1976 uint64_t disk_size
= UINT64_MAX
, disk_usage
= UINT64_MAX
, disk_free
= UINT64_MAX
,
1977 disk_ceiling
= UINT64_MAX
, disk_floor
= UINT64_MAX
;
1980 const char *path
= NULL
;
1983 assert(ret_disk_size
);
1984 assert(ret_disk_usage
);
1985 assert(ret_disk_free
);
1986 assert(ret_disk_ceiling
);
1987 assert(ret_disk_floor
);
1989 if (HOME_STATE_IS_ACTIVE(state
))
1990 path
= user_record_home_directory(h
->record
);
1993 if (state
== HOME_ABSENT
)
1996 path
= user_record_image_path(h
->record
);
2002 if (statfs(path
, &sfs
) < 0)
2003 log_debug_errno(errno
, "Failed to statfs() %s, ignoring: %m", path
);
2005 disk_free
= sfs
.f_bsize
* sfs
.f_bavail
;
2006 disk_size
= sfs
.f_bsize
* sfs
.f_blocks
;
2008 /* We don't initialize disk_usage from statfs() data here, since the device is likely not used
2009 * by us alone, and disk_usage should only reflect our own use. */
2012 if (IN_SET(h
->record
->storage
, USER_CLASSIC
, USER_DIRECTORY
, USER_SUBVOLUME
)) {
2014 r
= btrfs_is_subvol(path
);
2016 log_debug_errno(r
, "Failed to determine whether %s is a btrfs subvolume: %m", path
);
2020 r
= btrfs_subvol_get_subtree_quota(path
, 0, &qi
);
2022 log_debug_errno(r
, "Failed to query btrfs subtree quota, ignoring: %m");
2024 disk_usage
= qi
.referenced
;
2026 if (disk_free
!= UINT64_MAX
) {
2027 disk_ceiling
= qi
.referenced
+ disk_free
;
2029 if (disk_size
!= UINT64_MAX
&& disk_ceiling
> disk_size
)
2030 disk_ceiling
= disk_size
;
2033 if (qi
.referenced_max
!= UINT64_MAX
) {
2034 if (disk_size
!= UINT64_MAX
)
2035 disk_size
= MIN(qi
.referenced_max
, disk_size
);
2037 disk_size
= qi
.referenced_max
;
2040 if (disk_size
!= UINT64_MAX
) {
2041 if (disk_size
> disk_usage
)
2042 disk_free
= disk_size
- disk_usage
;
2052 if (IN_SET(h
->record
->storage
, USER_CLASSIC
, USER_DIRECTORY
, USER_FSCRYPT
)) {
2053 r
= quotactl_path(QCMD_FIXED(Q_GETQUOTA
, USRQUOTA
), path
, h
->uid
, &req
);
2055 if (ERRNO_IS_NOT_SUPPORTED(r
)) {
2056 log_debug_errno(r
, "No UID quota support on %s.", path
);
2061 log_debug_errno(r
, "Failed to query disk quota for UID " UID_FMT
": %m", h
->uid
);
2065 disk_usage
= 0; /* No record of this user? then nothing was used */
2067 if (FLAGS_SET(req
.dqb_valid
, QIF_SPACE
) && disk_free
!= UINT64_MAX
) {
2068 disk_ceiling
= req
.dqb_curspace
+ disk_free
;
2070 if (disk_size
!= UINT64_MAX
&& disk_ceiling
> disk_size
)
2071 disk_ceiling
= disk_size
;
2074 if (FLAGS_SET(req
.dqb_valid
, QIF_BLIMITS
)) {
2077 /* Take the minimum of the quota and the available disk space here */
2078 q
= req
.dqb_bhardlimit
* QIF_DQBLKSIZE
;
2079 if (disk_size
!= UINT64_MAX
)
2080 disk_size
= MIN(disk_size
, q
);
2084 if (FLAGS_SET(req
.dqb_valid
, QIF_SPACE
)) {
2085 disk_usage
= req
.dqb_curspace
;
2087 if (disk_size
!= UINT64_MAX
) {
2088 if (disk_size
> disk_usage
)
2089 disk_free
= disk_size
- disk_usage
;
2098 *ret_disk_size
= disk_size
;
2099 *ret_disk_usage
= disk_usage
;
2100 *ret_disk_free
= disk_free
;
2101 *ret_disk_ceiling
= disk_ceiling
;
2102 *ret_disk_floor
= disk_floor
;
2107 int home_augment_status(
2109 UserRecordLoadFlags flags
,
2112 uint64_t disk_size
= UINT64_MAX
, disk_usage
= UINT64_MAX
, disk_free
= UINT64_MAX
, disk_ceiling
= UINT64_MAX
, disk_floor
= UINT64_MAX
;
2113 _cleanup_(json_variant_unrefp
) JsonVariant
*j
= NULL
, *v
= NULL
, *m
= NULL
, *status
= NULL
;
2114 _cleanup_(user_record_unrefp
) UserRecord
*ur
= NULL
;
2115 char ids
[SD_ID128_STRING_MAX
];
2123 /* We are supposed to add this, this can't be on hence. */
2124 assert(!FLAGS_SET(flags
, USER_RECORD_STRIP_STATUS
));
2126 r
= sd_id128_get_machine(&id
);
2130 state
= home_get_state(h
);
2132 switch (h
->record
->storage
) {
2135 r
= home_get_disk_status_luks(h
, state
, &disk_size
, &disk_usage
, &disk_free
, &disk_ceiling
, &disk_floor
);
2142 case USER_DIRECTORY
:
2143 case USER_SUBVOLUME
:
2146 r
= home_get_disk_status_directory(h
, state
, &disk_size
, &disk_usage
, &disk_free
, &disk_ceiling
, &disk_floor
);
2156 if (disk_floor
== UINT64_MAX
|| (disk_usage
!= UINT64_MAX
&& disk_floor
< disk_usage
))
2157 disk_floor
= disk_usage
;
2158 if (disk_floor
== UINT64_MAX
|| disk_floor
< USER_DISK_SIZE_MIN
)
2159 disk_floor
= USER_DISK_SIZE_MIN
;
2160 if (disk_ceiling
== UINT64_MAX
|| disk_ceiling
> USER_DISK_SIZE_MAX
)
2161 disk_ceiling
= USER_DISK_SIZE_MAX
;
2163 r
= json_build(&status
,
2165 JSON_BUILD_PAIR("state", JSON_BUILD_STRING(home_state_to_string(state
))),
2166 JSON_BUILD_PAIR("service", JSON_BUILD_STRING("io.systemd.Home")),
2167 JSON_BUILD_PAIR_CONDITION(disk_size
!= UINT64_MAX
, "diskSize", JSON_BUILD_UNSIGNED(disk_size
)),
2168 JSON_BUILD_PAIR_CONDITION(disk_usage
!= UINT64_MAX
, "diskUsage", JSON_BUILD_UNSIGNED(disk_usage
)),
2169 JSON_BUILD_PAIR_CONDITION(disk_free
!= UINT64_MAX
, "diskFree", JSON_BUILD_UNSIGNED(disk_free
)),
2170 JSON_BUILD_PAIR_CONDITION(disk_ceiling
!= UINT64_MAX
, "diskCeiling", JSON_BUILD_UNSIGNED(disk_ceiling
)),
2171 JSON_BUILD_PAIR_CONDITION(disk_floor
!= UINT64_MAX
, "diskFloor", JSON_BUILD_UNSIGNED(disk_floor
)),
2172 JSON_BUILD_PAIR_CONDITION(h
->signed_locally
>= 0, "signedLocally", JSON_BUILD_BOOLEAN(h
->signed_locally
))
2177 j
= json_variant_ref(h
->record
->json
);
2178 v
= json_variant_ref(json_variant_by_key(j
, "status"));
2179 m
= json_variant_ref(json_variant_by_key(v
, sd_id128_to_string(id
, ids
)));
2181 r
= json_variant_filter(&m
, STRV_MAKE("diskSize", "diskUsage", "diskFree", "diskCeiling", "diskFloor", "signedLocally"));
2185 r
= json_variant_merge(&m
, status
);
2189 r
= json_variant_set_field(&v
, ids
, m
);
2193 r
= json_variant_set_field(&j
, "status", v
);
2197 ur
= user_record_new();
2201 r
= user_record_load(ur
, j
, flags
);
2206 FLAGS_SET(h
->record
->mask
, USER_RECORD_PRIVILEGED
) &&
2207 !FLAGS_SET(ur
->mask
, USER_RECORD_PRIVILEGED
);
2209 *ret
= TAKE_PTR(ur
);
2213 static int on_home_ref_eof(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
2214 _cleanup_(operation_unrefp
) Operation
*o
= NULL
;
2220 if (h
->ref_event_source_please_suspend
== s
)
2221 h
->ref_event_source_please_suspend
= sd_event_source_disable_unref(h
->ref_event_source_please_suspend
);
2223 if (h
->ref_event_source_dont_suspend
== s
)
2224 h
->ref_event_source_dont_suspend
= sd_event_source_disable_unref(h
->ref_event_source_dont_suspend
);
2226 if (h
->ref_event_source_dont_suspend
|| h
->ref_event_source_please_suspend
)
2229 log_info("Got notification that all sessions of user %s ended, deactivating automatically.", h
->user_name
);
2231 o
= operation_new(OPERATION_PIPE_EOF
, NULL
);
2237 home_schedule_operation(h
, o
, NULL
);
2241 int home_create_fifo(Home
*h
, bool please_suspend
) {
2242 _cleanup_close_
int ret_fd
= -1;
2243 sd_event_source
**ss
;
2244 const char *fn
, *suffix
;
2249 if (please_suspend
) {
2250 suffix
= ".please-suspend";
2251 ss
= &h
->ref_event_source_please_suspend
;
2253 suffix
= ".dont-suspend";
2254 ss
= &h
->ref_event_source_dont_suspend
;
2257 fn
= strjoina("/run/systemd/home/", h
->user_name
, suffix
);
2260 _cleanup_close_
int ref_fd
= -1;
2262 (void) mkdir("/run/systemd/home/", 0755);
2263 if (mkfifo(fn
, 0600) < 0 && errno
!= EEXIST
)
2264 return log_error_errno(errno
, "Failed to create FIFO %s: %m", fn
);
2266 ref_fd
= open(fn
, O_RDONLY
|O_CLOEXEC
|O_NONBLOCK
);
2268 return log_error_errno(errno
, "Failed to open FIFO %s for reading: %m", fn
);
2270 r
= sd_event_add_io(h
->manager
->event
, ss
, ref_fd
, 0, on_home_ref_eof
, h
);
2272 return log_error_errno(r
, "Failed to allocate reference FIFO event source: %m");
2274 (void) sd_event_source_set_description(*ss
, "acquire-ref");
2276 r
= sd_event_source_set_priority(*ss
, SD_EVENT_PRIORITY_IDLE
-1);
2280 r
= sd_event_source_set_io_fd_own(*ss
, true);
2282 return log_error_errno(r
, "Failed to pass ownership of FIFO event fd to event source: %m");
2287 ret_fd
= open(fn
, O_WRONLY
|O_CLOEXEC
|O_NONBLOCK
);
2289 return log_error_errno(errno
, "Failed to open FIFO %s for writing: %m", fn
);
2291 return TAKE_FD(ret_fd
);
2294 static int home_dispatch_acquire(Home
*h
, Operation
*o
) {
2295 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2296 int (*call
)(Home
*h
, UserRecord
*secret
, HomeState for_state
, sd_bus_error
*error
) = NULL
;
2297 HomeState for_state
;
2302 assert(o
->type
== OPERATION_ACQUIRE
);
2304 switch (home_get_state(h
)) {
2306 case HOME_UNFIXATED
:
2307 for_state
= HOME_FIXATING_FOR_ACQUIRE
;
2308 call
= home_fixate_internal
;
2312 r
= sd_bus_error_setf(&error
, BUS_ERROR_HOME_ABSENT
, "Home %s is currently missing or not plugged in.", h
->user_name
);
2316 for_state
= HOME_ACTIVATING_FOR_ACQUIRE
;
2317 call
= home_activate_internal
;
2321 for_state
= HOME_AUTHENTICATING_FOR_ACQUIRE
;
2322 call
= home_authenticate_internal
;
2326 for_state
= HOME_UNLOCKING_FOR_ACQUIRE
;
2327 call
= home_unlock_internal
;
2331 /* All other cases means we are currently executing an operation, which means the job remains
2336 assert(!h
->current_operation
);
2339 r
= home_ratelimit(h
, &error
);
2341 r
= call(h
, o
->secret
, for_state
, &error
);
2344 if (r
!= 0) /* failure or completed */
2345 operation_result(o
, r
, &error
);
2347 h
->current_operation
= operation_ref(o
);
2352 static int home_dispatch_release(Home
*h
, Operation
*o
) {
2353 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2358 assert(o
->type
== OPERATION_RELEASE
);
2360 if (h
->ref_event_source_dont_suspend
|| h
->ref_event_source_please_suspend
)
2361 /* If there's now a reference again, then let's abort the release attempt */
2362 r
= sd_bus_error_setf(&error
, BUS_ERROR_HOME_BUSY
, "Home %s is currently referenced.", h
->user_name
);
2364 switch (home_get_state(h
)) {
2366 case HOME_UNFIXATED
:
2373 r
= sd_bus_error_setf(&error
, BUS_ERROR_HOME_LOCKED
, "Home %s is currently locked.", h
->user_name
);
2377 r
= home_deactivate_internal(h
, false, &error
);
2381 /* All other cases means we are currently executing an operation, which means the job remains
2387 assert(!h
->current_operation
);
2389 if (r
!= 0) /* failure or completed */
2390 operation_result(o
, r
, &error
);
2392 h
->current_operation
= operation_ref(o
);
2397 static int home_dispatch_lock_all(Home
*h
, Operation
*o
) {
2398 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2403 assert(o
->type
== OPERATION_LOCK_ALL
);
2405 switch (home_get_state(h
)) {
2407 case HOME_UNFIXATED
:
2410 log_info("Home %s is not active, no locking necessary.", h
->user_name
);
2415 log_info("Home %s is already locked.", h
->user_name
);
2420 log_info("Locking home %s.", h
->user_name
);
2421 r
= home_lock(h
, &error
);
2425 /* All other cases means we are currently executing an operation, which means the job remains
2430 assert(!h
->current_operation
);
2432 if (r
!= 0) /* failure or completed */
2433 operation_result(o
, r
, &error
);
2435 h
->current_operation
= operation_ref(o
);
2440 static int home_dispatch_pipe_eof(Home
*h
, Operation
*o
) {
2441 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2446 assert(o
->type
== OPERATION_PIPE_EOF
);
2448 if (h
->ref_event_source_please_suspend
|| h
->ref_event_source_dont_suspend
)
2449 return 1; /* Hmm, there's a reference again, let's cancel this */
2451 switch (home_get_state(h
)) {
2453 case HOME_UNFIXATED
:
2456 log_info("Home %s already deactivated, no automatic deactivation needed.", h
->user_name
);
2459 case HOME_DEACTIVATING
:
2460 log_info("Home %s is already being deactivated, automatic deactivated unnecessary.", h
->user_name
);
2464 r
= home_deactivate_internal(h
, false, &error
);
2466 log_warning_errno(r
, "Failed to deactivate %s, ignoring: %s", h
->user_name
, bus_error_message(&error
, r
));
2471 /* If the device is locked or any operation is being executed, let's leave this pending */
2475 /* Note that we don't call operation_fail() or operation_success() here, because this kind of
2476 * operation has no message associated with it, and thus there's no need to propagate success. */
2478 assert(!o
->message
);
2482 static int home_dispatch_deactivate_force(Home
*h
, Operation
*o
) {
2483 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2488 assert(o
->type
== OPERATION_DEACTIVATE_FORCE
);
2490 switch (home_get_state(h
)) {
2492 case HOME_UNFIXATED
:
2495 log_debug("Home %s already deactivated, no forced deactivation due to unplug needed.", h
->user_name
);
2498 case HOME_DEACTIVATING
:
2499 log_debug("Home %s is already being deactivated, forced deactivation due to unplug unnecessary.", h
->user_name
);
2504 r
= home_deactivate_internal(h
, true, &error
);
2506 log_warning_errno(r
, "Failed to forcibly deactivate %s, ignoring: %s", h
->user_name
, bus_error_message(&error
, r
));
2510 /* If any operation is being executed, let's leave this pending */
2514 /* Note that we don't call operation_fail() or operation_success() here, because this kind of
2515 * operation has no message associated with it, and thus there's no need to propagate success. */
2517 assert(!o
->message
);
2521 static int on_pending(sd_event_source
*s
, void *userdata
) {
2529 o
= ordered_set_first(h
->pending_operations
);
2531 static int (* const operation_table
[_OPERATION_MAX
])(Home
*h
, Operation
*o
) = {
2532 [OPERATION_ACQUIRE
] = home_dispatch_acquire
,
2533 [OPERATION_RELEASE
] = home_dispatch_release
,
2534 [OPERATION_LOCK_ALL
] = home_dispatch_lock_all
,
2535 [OPERATION_PIPE_EOF
] = home_dispatch_pipe_eof
,
2536 [OPERATION_DEACTIVATE_FORCE
] = home_dispatch_deactivate_force
,
2539 assert(operation_table
[o
->type
]);
2540 r
= operation_table
[o
->type
](h
, o
);
2542 /* The operation completed, let's remove it from the pending list, and exit while
2543 * leaving the event source enabled as it is. */
2544 assert_se(ordered_set_remove(h
->pending_operations
, o
) == o
);
2550 /* Nothing to do anymore, let's turn off this event source */
2551 r
= sd_event_source_set_enabled(s
, SD_EVENT_OFF
);
2553 return log_error_errno(r
, "Failed to disable event source: %m");
2558 int home_schedule_operation(Home
*h
, Operation
*o
, sd_bus_error
*error
) {
2564 if (ordered_set_size(h
->pending_operations
) >= PENDING_OPERATIONS_MAX
)
2565 return sd_bus_error_setf(error
, BUS_ERROR_TOO_MANY_OPERATIONS
, "Too many client operations requested");
2567 r
= ordered_set_ensure_allocated(&h
->pending_operations
, &operation_hash_ops
);
2571 r
= ordered_set_put(h
->pending_operations
, o
);
2578 if (!h
->pending_event_source
) {
2579 r
= sd_event_add_defer(h
->manager
->event
, &h
->pending_event_source
, on_pending
, h
);
2581 return log_error_errno(r
, "Failed to allocate pending defer event source: %m");
2583 (void) sd_event_source_set_description(h
->pending_event_source
, "pending");
2585 r
= sd_event_source_set_priority(h
->pending_event_source
, SD_EVENT_PRIORITY_IDLE
);
2590 r
= sd_event_source_set_enabled(h
->pending_event_source
, SD_EVENT_ON
);
2592 return log_error_errno(r
, "Failed to trigger pending event source: %m");
2597 static int home_get_image_path_seat(Home
*h
, char **ret
) {
2598 _cleanup_(sd_device_unrefp
) sd_device
*d
= NULL
;
2599 _cleanup_free_
char *c
= NULL
;
2600 const char *ip
, *seat
;
2606 if (user_record_storage(h
->record
) != USER_LUKS
)
2609 ip
= user_record_image_path(h
->record
);
2613 if (!path_startswith(ip
, "/dev/"))
2616 if (stat(ip
, &st
) < 0)
2619 if (!S_ISBLK(st
.st_mode
))
2622 r
= sd_device_new_from_devnum(&d
, 'b', st
.st_rdev
);
2626 r
= sd_device_get_property_value(d
, "ID_SEAT", &seat
);
2627 if (r
== -ENOENT
) /* no property means seat0 */
2640 int home_auto_login(Home
*h
, char ***ret_seats
) {
2641 _cleanup_free_
char *seat
= NULL
, *seat2
= NULL
;
2646 (void) home_get_image_path_seat(h
, &seat
);
2648 if (h
->record
->auto_login
> 0 && !streq_ptr(seat
, "seat0")) {
2649 /* For now, when the auto-login boolean is set for a user, let's make it mean
2650 * "seat0". Eventually we can extend the concept and allow configuration of any kind of seat,
2651 * but let's keep simple initially, most likely the feature is interesting on single-user
2652 * systems anyway, only.
2654 * We filter out users marked for auto-login in we know for sure their home directory is
2657 if (user_record_test_image_path(h
->record
) != USER_TEST_ABSENT
) {
2658 seat2
= strdup("seat0");
2664 if (seat
|| seat2
) {
2665 _cleanup_strv_free_
char **list
= NULL
;
2668 list
= new(char*, 3);
2673 list
[i
++] = TAKE_PTR(seat
);
2675 list
[i
++] = TAKE_PTR(seat2
);
2678 *ret_seats
= TAKE_PTR(list
);
2686 int home_set_current_message(Home
*h
, sd_bus_message
*m
) {
2692 if (h
->current_operation
)
2695 h
->current_operation
= operation_new(OPERATION_IMMEDIATE
, m
);
2696 if (!h
->current_operation
)
2702 static const char* const home_state_table
[_HOME_STATE_MAX
] = {
2703 [HOME_UNFIXATED
] = "unfixated",
2704 [HOME_ABSENT
] = "absent",
2705 [HOME_INACTIVE
] = "inactive",
2706 [HOME_FIXATING
] = "fixating",
2707 [HOME_FIXATING_FOR_ACTIVATION
] = "fixating-for-activation",
2708 [HOME_FIXATING_FOR_ACQUIRE
] = "fixating-for-acquire",
2709 [HOME_ACTIVATING
] = "activating",
2710 [HOME_ACTIVATING_FOR_ACQUIRE
] = "activating-for-acquire",
2711 [HOME_DEACTIVATING
] = "deactivating",
2712 [HOME_ACTIVE
] = "active",
2713 [HOME_LOCKING
] = "locking",
2714 [HOME_LOCKED
] = "locked",
2715 [HOME_UNLOCKING
] = "unlocking",
2716 [HOME_UNLOCKING_FOR_ACQUIRE
] = "unlocking-for-acquire",
2717 [HOME_CREATING
] = "creating",
2718 [HOME_REMOVING
] = "removing",
2719 [HOME_UPDATING
] = "updating",
2720 [HOME_UPDATING_WHILE_ACTIVE
] = "updating-while-active",
2721 [HOME_RESIZING
] = "resizing",
2722 [HOME_RESIZING_WHILE_ACTIVE
] = "resizing-while-active",
2723 [HOME_PASSWD
] = "passwd",
2724 [HOME_PASSWD_WHILE_ACTIVE
] = "passwd-while-active",
2725 [HOME_AUTHENTICATING
] = "authenticating",
2726 [HOME_AUTHENTICATING_WHILE_ACTIVE
] = "authenticating-while-active",
2727 [HOME_AUTHENTICATING_FOR_ACQUIRE
] = "authenticating-for-acquire",
2730 DEFINE_STRING_TABLE_LOOKUP(home_state
, HomeState
);