]> git.ipfire.org Git - thirdparty/systemd.git/blame - src/home/homed-home.c
projects / thirdparty / systemd.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
network: Allow DHCPv6 client to be started even if no O or M bit in RA.
[thirdparty/systemd.git] / src / home / homed-home.c
CommitLineData
70a5db58
LP		 1/* SPDX-License-Identifier: LGPL-2.1+ */
2
3#if HAVE_LINUX_MEMFD_H
4#include <linux/memfd.h>
5#endif
6
7#include <sys/mman.h>
8#include <sys/quota.h>
9#include <sys/vfs.h>
10
11#include "blockdev-util.h"
12#include "btrfs-util.h"
13#include "bus-common-errors.h"
14#include "env-util.h"
15#include "errno-list.h"
16#include "errno-util.h"
17#include "fd-util.h"
18#include "fileio.h"
19#include "home-util.h"
20#include "homed-home-bus.h"
21#include "homed-home.h"
22#include "missing_syscall.h"
23#include "mkdir.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"
29#include "set.h"
30#include "signal-util.h"
31#include "stat-util.h"
32#include "string-table.h"
33#include "strv.h"
34#include "user-record-sign.h"
35#include "user-record-util.h"
36#include "user-record.h"
37#include "user-util.h"
38
39#define HOME_USERS_MAX 500
40#define PENDING_OPERATIONS_MAX 100
41
42assert_cc(HOME_UID_MIN <= HOME_UID_MAX);
43assert_cc(HOME_USERS_MAX <= (HOME_UID_MAX - HOME_UID_MIN + 1));
44
45static int home_start_work(Home *h, const char *verb, UserRecord *hr, UserRecord *secret);
46
47DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(operation_hash_ops, void, trivial_hash_func, trivial_compare_func, Operation, operation_unref);
48
49static int suitable_home_record(UserRecord *hr) {
50 int r;
51
52 assert(hr);
53
54 if (!hr->user_name)
55 return -EUNATCH;
56
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))
60 return -EINVAL;
61 if (!uid_is_valid(hr->uid))
62 return -EINVAL;
63
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;
68
69 /* Insist that GID and UID match */
70 if (user_record_gid(hr) != (gid_t) hr->uid)
71 return -EBADSLT;
72
73 /* Similar for the realm */
74 if (hr->realm) {
75 r = suitable_realm(hr->realm);
76 if (r < 0)
77 return r;
78 if (r == 0)
79 return -EINVAL;
80 }
81
82 return 0;
83}
84
85int 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;
88 int r;
89
90 assert(m);
91 assert(hr);
92
93 r = suitable_home_record(hr);
94 if (r < 0)
95 return r;
96
97 if (hashmap_contains(m->homes_by_name, hr->user_name))
98 return -EBUSY;
99
100 if (hashmap_contains(m->homes_by_uid, UID_TO_PTR(hr->uid)))
101 return -EBUSY;
102
103 if (sysfs && hashmap_contains(m->homes_by_sysfs, sysfs))
104 return -EBUSY;
105
106 if (hashmap_size(m->homes_by_name) >= HOME_USERS_MAX)
107 return -EUSERS;
108
109 nm = strdup(hr->user_name);
110 if (!nm)
111 return -ENOMEM;
112
113 if (sysfs) {
114 ns = strdup(sysfs);
115 if (!ns)
116 return -ENOMEM;
117 }
118
119 home = new(Home, 1);
120 if (!home)
121 return -ENOMEM;
122
123 *home = (Home) {
124 .manager = m,
125 .user_name = TAKE_PTR(nm),
126 .uid = hr->uid,
127 .state = _HOME_STATE_INVALID,
128 .worker_stdout_fd = -1,
129 .sysfs = TAKE_PTR(ns),
130 .signed_locally = -1,
131 };
132
133 r = hashmap_put(m->homes_by_name, home->user_name, home);
134 if (r < 0)
135 return r;
136
137 r = hashmap_put(m->homes_by_uid, UID_TO_PTR(home->uid), home);
138 if (r < 0)
139 return r;
140
141 if (home->sysfs) {
142 r = hashmap_put(m->homes_by_sysfs, home->sysfs, home);
143 if (r < 0)
144 return r;
145 }
146
147 r = user_record_clone(hr, USER_RECORD_LOAD_MASK_SECRET, &home->record);
148 if (r < 0)
149 return r;
150
151 (void) bus_manager_emit_auto_login_changed(m);
152 (void) bus_home_emit_change(home);
153
154 if (ret)
155 *ret = TAKE_PTR(home);
156 else
157 TAKE_PTR(home);
158
159 return 0;
160}
161
162Home *home_free(Home *h) {
163
164 if (!h)
165 return NULL;
166
167 if (h->manager) {
168 (void) bus_home_emit_remove(h);
169 (void) bus_manager_emit_auto_login_changed(h->manager);
170
171 if (h->user_name)
172 (void) hashmap_remove_value(h->manager->homes_by_name, h->user_name, h);
173
174 if (uid_is_valid(h->uid))
175 (void) hashmap_remove_value(h->manager->homes_by_uid, UID_TO_PTR(h->uid), h);
176
177 if (h->sysfs)
178 (void) hashmap_remove_value(h->manager->homes_by_sysfs, h->sysfs, h);
179
180 if (h->worker_pid > 0)
181 (void) hashmap_remove_value(h->manager->homes_by_worker_pid, PID_TO_PTR(h->worker_pid), h);
182
183 if (h->manager->gc_focus == h)
184 h->manager->gc_focus = NULL;
185 }
186
187 user_record_unref(h->record);
188 user_record_unref(h->secret);
189
190 h->worker_event_source = sd_event_source_unref(h->worker_event_source);
191 safe_close(h->worker_stdout_fd);
192 free(h->user_name);
193 free(h->sysfs);
194
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);
197
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);
201
202 h->current_operation = operation_unref(h->current_operation);
203
204 return mfree(h);
205}
206
207int home_set_record(Home *h, UserRecord *hr) {
208 _cleanup_(user_record_unrefp) UserRecord *new_hr = NULL;
209 Home *other;
210 int r;
211
212 assert(h);
213 assert(h->user_name);
214 assert(h->record);
215 assert(hr);
216
217 if (user_record_equal(h->record, hr))
218 return 0;
219
220 r = suitable_home_record(hr);
221 if (r < 0)
222 return r;
223
224 if (!user_record_compatible(h->record, hr))
225 return -EREMCHG;
226
227 if (!FLAGS_SET(hr->mask, USER_RECORD_REGULAR) ||
228 FLAGS_SET(hr->mask, USER_RECORD_SECRET))
229 return -EINVAL;
230
231 if (FLAGS_SET(h->record->mask, USER_RECORD_STATUS)) {
232 _cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
233
234 /* Hmm, the existing record has status fields? If so, copy them over */
235
236 v = json_variant_ref(hr->json);
237 r = json_variant_set_field(&v, "status", json_variant_by_key(h->record->json, "status"));
238 if (r < 0)
239 return r;
240
241 new_hr = user_record_new();
242 if (!new_hr)
243 return -ENOMEM;
244
245 r = user_record_load(new_hr, v, USER_RECORD_LOAD_REFUSE_SECRET);
246 if (r < 0)
247 return r;
248
249 hr = new_hr;
250 }
251
252 other = hashmap_get(h->manager->homes_by_uid, UID_TO_PTR(hr->uid));
253 if (other && other != h)
254 return -EBUSY;
255
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);
258 if (r < 0)
259 return r;
260 }
261
262 user_record_unref(h->record);
263 h->record = user_record_ref(hr);
264 h->uid = h->record->uid;
265
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);
269
270 return 0;
271}
272
273int home_save_record(Home *h) {
274 _cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
275 _cleanup_free_ char *text = NULL;
276 const char *fn;
277 int r;
278
279 assert(h);
280
281 v = json_variant_ref(h->record->json);
282 r = json_variant_normalize(&v);
283 if (r < 0)
284 log_warning_errno(r, "User record could not be normalized.");
285
286 r = json_variant_format(v, JSON_FORMAT_PRETTY|JSON_FORMAT_NEWLINE, &text);
287 if (r < 0)
288 return r;
289
290 (void) mkdir("/var/lib/systemd/", 0755);
291 (void) mkdir("/var/lib/systemd/home/", 0700);
292
293 fn = strjoina("/var/lib/systemd/home/", h->user_name, ".identity");
294
295 r = write_string_file(fn, text, WRITE_STRING_FILE_ATOMIC|WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_MODE_0600);
296 if (r < 0)
297 return r;
298
299 return 0;
300}
301
302int home_unlink_record(Home *h) {
303 const char *fn;
304
305 assert(h);
306
307 fn = strjoina("/var/lib/systemd/home/", h->user_name, ".identity");
308 if (unlink(fn) < 0 && errno != ENOENT)
309 return -errno;
310
311 fn = strjoina("/run/systemd/home/", h->user_name, ".ref");
312 if (unlink(fn) < 0 && errno != ENOENT)
313 return -errno;
314
315 return 0;
316}
317
318static void home_set_state(Home *h, HomeState state) {
319 HomeState old_state, new_state;
320
321 assert(h);
322
323 old_state = home_get_state(h);
324 h->state = state;
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 */
327
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));
331
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. */
335
336 home_schedule_operation(h, NULL, NULL);
337 manager_enqueue_gc(h->manager, h);
338 }
339}
340
341static 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;
347 struct stat st;
348 int r;
349
350 if (fstat(fd, &st) < 0)
351 return log_error_errno(errno, "Failed to stat stdout fd: %m");
352
353 assert(S_ISREG(st.st_mode));
354
355 if (st.st_size == 0) { /* empty record */
356 *ret = NULL;
357 return 0;
358 }
359
360 if (lseek(fd, SEEK_SET, 0) == (off_t) -1)
361 return log_error_errno(errno, "Failed to seek to beginning of memfd: %m");
362
4fa744a3 363 f = take_fdopen(&fd, "r");
70a5db58
LP		 364 if (!f)
365 return log_error_errno(errno, "Failed to reopen memfd: %m");
366
70a5db58
LP		 367 if (DEBUG_LOGGING) {
368 _cleanup_free_ char *text = NULL;
369
370 r = read_full_stream(f, &text, NULL);
371 if (r < 0)
372 return log_error_errno(r, "Failed to read from client: %m");
373
374 log_debug("Got from worker: %s", text);
375 rewind(f);
376 }
377
378 r = json_parse_file(f, "stdout", JSON_PARSE_SENSITIVE, &v, &line, &column);
379 if (r < 0)
380 return log_error_errno(r, "Failed to parse identity at %u:%u: %m", line, column);
381
382 hr = user_record_new();
383 if (!hr)
384 return log_oom();
385
386 r = user_record_load(hr, v, USER_RECORD_LOAD_REFUSE_SECRET);
387 if (r < 0)
388 return log_error_errno(r, "Failed to load home record identity: %m");
389
390 *ret = TAKE_PTR(hr);
391 return 1;
392}
393
394static int home_verify_user_record(Home *h, UserRecord *hr, bool *ret_signed_locally, sd_bus_error *ret_error) {
395 int is_signed;
396
397 assert(h);
398 assert(hr);
399 assert(ret_signed_locally);
400
401 is_signed = manager_verify_user_record(h->manager, hr);
402 switch (is_signed) {
403
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;
407 return 0;
408
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;
412 return 0;
413
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;
417 return 0;
418
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);
422
423 case -ENOKEY:
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);
80ace4f2 425 return log_error_errno(is_signed, "Home %s contains user record that is not signed by any known key, refusing.", hr->user_name);
70a5db58
LP		 426
427 default:
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);
430 }
431}
432
433static 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 */
435
436 switch (e) {
437
438 case -EMSGSIZE:
80ace4f2 439 return sd_bus_error_setf(error, BUS_ERROR_BAD_HOME_SIZE, "File systems of this type cannot be shrinked");
70a5db58
LP		 440 case -ETXTBSY:
441 return sd_bus_error_setf(error, BUS_ERROR_BAD_HOME_SIZE, "File systems of this type can only be shrinked offline");
442 case -ERANGE:
443 return sd_bus_error_setf(error, BUS_ERROR_BAD_HOME_SIZE, "File system size too small");
444 case -ENOLINK:
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");
448 case -ENOTTY:
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");
452 case -ENOKEY:
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);
454 case -EBADSLT:
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);
456 case -ENOANO:
457 return sd_bus_error_setf(error, BUS_ERROR_TOKEN_PIN_NEEDED, "PIN for security token required.");
458 case -ERFKILL:
459 return sd_bus_error_setf(error, BUS_ERROR_TOKEN_PROTECTED_AUTHENTICATION_PATH_NEEDED, "Security token requires protected authentication path.");
460 case -EOWNERDEAD:
461 return sd_bus_error_setf(error, BUS_ERROR_TOKEN_PIN_LOCKED, "PIN of security token locked.");
462 case -ENOLCK:
463 return sd_bus_error_setf(error, BUS_ERROR_TOKEN_BAD_PIN, "Bad PIN of security token.");
464 case -ETOOMANYREFS:
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.");
466 case -EUCLEAN:
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.");
468 case -EBUSY:
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);
470 case -ENOEXEC:
471 return sd_bus_error_setf(error, BUS_ERROR_HOME_NOT_ACTIVE, "Home %s is currently not active", h->user_name);
472 case -ENOSPC:
473 return sd_bus_error_setf(error, BUS_ERROR_NO_DISK_SPACE, "Not enough disk space for home %s", h->user_name);
474 }
475
476 return 0;
477}
478
479static void home_count_bad_authentication(Home *h, bool save) {
480 int r;
481
482 assert(h);
483
484 r = user_record_bad_authentication(h->record);
485 if (r < 0) {
486 log_warning_errno(r, "Failed to increase bad authentication counter, ignoring: %m");
487 return;
488 }
489
490 if (save) {
491 r = home_save_record(h);
492 if (r < 0)
493 log_warning_errno(r, "Failed to write home record to disk, ignoring: %m");
494 }
495}
496
497static void home_fixate_finish(Home *h, int ret, UserRecord *hr) {
498 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
499 _cleanup_(user_record_unrefp) UserRecord *secret = NULL;
500 bool signed_locally;
501 int r;
502
503 assert(h);
504 assert(IN_SET(h->state, HOME_FIXATING, HOME_FIXATING_FOR_ACTIVATION, HOME_FIXATING_FOR_ACQUIRE));
505
506 secret = TAKE_PTR(h->secret); /* Take possession */
507
508 if (ret < 0) {
509 if (ret == -ENOKEY)
510 (void) home_count_bad_authentication(h, false);
511
512 (void) convert_worker_errno(h, ret, &error);
513 r = log_error_errno(ret, "Fixation failed: %m");
514 goto fail;
515 }
516 if (!hr) {
517 r = log_error_errno(SYNTHETIC_ERRNO(EIO), "Did not receive user record from worker process, fixation failed.");
518 goto fail;
519 }
520
521 r = home_verify_user_record(h, hr, &signed_locally, &error);
522 if (r < 0)
523 goto fail;
524
525 r = home_set_record(h, hr);
526 if (r < 0) {
527 log_error_errno(r, "Failed to update home record: %m");
528 goto fail;
529 }
530
531 h->signed_locally = signed_locally;
532
533 /* When we finished fixating (and don't follow-up with activation), let's count this as good authentication */
534 if (h->state == HOME_FIXATING) {
535 r = user_record_good_authentication(h->record);
536 if (r < 0)
537 log_warning_errno(r, "Failed to increase good authentication counter, ignoring: %m");
538 }
539
540 r = home_save_record(h);
541 if (r < 0)
542 log_warning_errno(r, "Failed to write home record to disk, ignoring: %m");
543
544 if (IN_SET(h->state, HOME_FIXATING_FOR_ACTIVATION, HOME_FIXATING_FOR_ACQUIRE)) {
545
546 r = home_start_work(h, "activate", h->record, secret);
547 if (r < 0) {
548 h->current_operation = operation_result_unref(h->current_operation, r, NULL);
549 home_set_state(h, _HOME_STATE_INVALID);
550 } else
551 home_set_state(h, h->state == HOME_FIXATING_FOR_ACTIVATION ? HOME_ACTIVATING : HOME_ACTIVATING_FOR_ACQUIRE);
552
553 return;
554 }
555
556 log_debug("Fixation of %s completed.", h->user_name);
557
558 h->current_operation = operation_result_unref(h->current_operation, 0, NULL);
559
560 /* Reset the state to "invalid", which makes home_get_state() test if the image exists and returns
561 * HOME_ABSENT vs. HOME_INACTIVE as necessary. */
562 home_set_state(h, _HOME_STATE_INVALID);
563 return;
564
565fail:
566 /* If fixation fails, we stay in unfixated state! */
567 h->current_operation = operation_result_unref(h->current_operation, r, &error);
568 home_set_state(h, HOME_UNFIXATED);
569}
570
571static void home_activate_finish(Home *h, int ret, UserRecord *hr) {
572 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
573 int r;
574
575 assert(h);
576 assert(IN_SET(h->state, HOME_ACTIVATING, HOME_ACTIVATING_FOR_ACQUIRE));
577
578 if (ret < 0) {
579 if (ret == -ENOKEY)
580 home_count_bad_authentication(h, true);
581
582 (void) convert_worker_errno(h, ret, &error);
583 r = log_error_errno(ret, "Activation failed: %m");
584 goto finish;
585 }
586
587 if (hr) {
588 bool signed_locally;
589
590 r = home_verify_user_record(h, hr, &signed_locally, &error);
591 if (r < 0)
592 goto finish;
593
594 r = home_set_record(h, hr);
595 if (r < 0) {
596 log_error_errno(r, "Failed to update home record, ignoring: %m");
597 goto finish;
598 }
599
600 h->signed_locally = signed_locally;
601
602 r = user_record_good_authentication(h->record);
603 if (r < 0)
604 log_warning_errno(r, "Failed to increase good authentication counter, ignoring: %m");
605
606 r = home_save_record(h);
607 if (r < 0)
608 log_warning_errno(r, "Failed to write home record to disk, ignoring: %m");
609 }
610
611 log_debug("Activation of %s completed.", h->user_name);
612 r = 0;
613
614finish:
615 h->current_operation = operation_result_unref(h->current_operation, r, &error);
616 home_set_state(h, _HOME_STATE_INVALID);
617}
618
619static void home_deactivate_finish(Home *h, int ret, UserRecord *hr) {
620 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
621 int r;
622
623 assert(h);
624 assert(h->state == HOME_DEACTIVATING);
625 assert(!hr); /* We don't expect a record on this operation */
626
627 if (ret < 0) {
628 (void) convert_worker_errno(h, ret, &error);
629 r = log_error_errno(ret, "Deactivation of %s failed: %m", h->user_name);
630 goto finish;
631 }
632
633 log_debug("Deactivation of %s completed.", h->user_name);
634 r = 0;
635
636finish:
637 h->current_operation = operation_result_unref(h->current_operation, r, &error);
638 home_set_state(h, _HOME_STATE_INVALID);
639}
640
641static void home_remove_finish(Home *h, int ret, UserRecord *hr) {
642 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
643 Manager *m;
644 int r;
645
646 assert(h);
647 assert(h->state == HOME_REMOVING);
648 assert(!hr); /* We don't expect a record on this operation */
649
650 m = h->manager;
651
652 if (ret < 0 && ret != -EALREADY) {
653 (void) convert_worker_errno(h, ret, &error);
654 r = log_error_errno(ret, "Removing %s failed: %m", h->user_name);
655 goto fail;
656 }
657
658 /* For a couple of storage types we can't delete the actual data storage when called (such as LUKS on
659 * partitions like USB sticks, or so). Sometimes these storage locations are among those we normally
660 * automatically discover in /home or in udev. When such a home is deleted let's hence issue a rescan
661 * after completion, so that "unfixated" entries are rediscovered. */
662 if (!IN_SET(user_record_test_image_path(h->record), USER_TEST_UNDEFINED, USER_TEST_ABSENT))
663 manager_enqueue_rescan(m);
664
665 /* The image is now removed from disk. Now also remove our stored record */
666 r = home_unlink_record(h);
667 if (r < 0) {
668 log_error_errno(r, "Removing record file failed: %m");
669 goto fail;
670 }
671
672 log_debug("Removal of %s completed.", h->user_name);
673 h->current_operation = operation_result_unref(h->current_operation, 0, NULL);
674
675 /* Unload this record from memory too now. */
676 h = home_free(h);
677 return;
678
679fail:
680 h->current_operation = operation_result_unref(h->current_operation, r, &error);
681 home_set_state(h, _HOME_STATE_INVALID);
682}
683
684static void home_create_finish(Home *h, int ret, UserRecord *hr) {
685 int r;
686
687 assert(h);
688 assert(h->state == HOME_CREATING);
689
690 if (ret < 0) {
691 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
692
693 (void) convert_worker_errno(h, ret, &error);
694 log_error_errno(ret, "Operation on %s failed: %m", h->user_name);
695 h->current_operation = operation_result_unref(h->current_operation, ret, &error);
696
697 if (h->unregister_on_failure) {
698 (void) home_unlink_record(h);
699 h = home_free(h);
700 return;
701 }
702
703 home_set_state(h, _HOME_STATE_INVALID);
704 return;
705 }
706
707 if (hr) {
708 r = home_set_record(h, hr);
709 if (r < 0)
710 log_warning_errno(r, "Failed to update home record, ignoring: %m");
711 }
712
713 r = home_save_record(h);
714 if (r < 0)
715 log_warning_errno(r, "Failed to save record to disk, ignoring: %m");
716
717 log_debug("Creation of %s completed.", h->user_name);
718
719 h->current_operation = operation_result_unref(h->current_operation, 0, NULL);
720 home_set_state(h, _HOME_STATE_INVALID);
721}
722
723static void home_change_finish(Home *h, int ret, UserRecord *hr) {
724 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
725 int r;
726
727 assert(h);
728
729 if (ret < 0) {
730 if (ret == -ENOKEY)
731 (void) home_count_bad_authentication(h, true);
732
733 (void) convert_worker_errno(h, ret, &error);
734 r = log_error_errno(ret, "Change operation failed: %m");
735 goto finish;
736 }
737
738 if (hr) {
739 r = home_set_record(h, hr);
740 if (r < 0)
741 log_warning_errno(r, "Failed to update home record, ignoring: %m");
742 else {
743 r = user_record_good_authentication(h->record);
744 if (r < 0)
745 log_warning_errno(r, "Failed to increase good authentication counter, ignoring: %m");
746
747 r = home_save_record(h);
748 if (r < 0)
749 log_warning_errno(r, "Failed to write home record to disk, ignoring: %m");
750 }
751 }
752
753 log_debug("Change operation of %s completed.", h->user_name);
754 r = 0;
755
756finish:
757 h->current_operation = operation_result_unref(h->current_operation, r, &error);
758 home_set_state(h, _HOME_STATE_INVALID);
759}
760
761static void home_locking_finish(Home *h, int ret, UserRecord *hr) {
762 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
763 int r;
764
765 assert(h);
766 assert(h->state == HOME_LOCKING);
767
768 if (ret < 0) {
769 (void) convert_worker_errno(h, ret, &error);
770 r = log_error_errno(ret, "Locking operation failed: %m");
771 goto finish;
772 }
773
774 log_debug("Locking operation of %s completed.", h->user_name);
775 h->current_operation = operation_result_unref(h->current_operation, 0, NULL);
776 home_set_state(h, HOME_LOCKED);
777 return;
778
779finish:
780 /* If a specific home doesn't know the concept of locking, then that's totally OK, don't propagate
781 * the error if we are executing a LockAllHomes() operation. */
782
783 if (h->current_operation->type == OPERATION_LOCK_ALL && r == -ENOTTY)
784 h->current_operation = operation_result_unref(h->current_operation, 0, NULL);
785 else
786 h->current_operation = operation_result_unref(h->current_operation, r, &error);
787
788 home_set_state(h, _HOME_STATE_INVALID);
789}
790
791static void home_unlocking_finish(Home *h, int ret, UserRecord *hr) {
792 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
793 int r;
794
795 assert(h);
796 assert(IN_SET(h->state, HOME_UNLOCKING, HOME_UNLOCKING_FOR_ACQUIRE));
797
798 if (ret < 0) {
799 if (ret == -ENOKEY)
800 (void) home_count_bad_authentication(h, true);
801
802 (void) convert_worker_errno(h, ret, &error);
803 r = log_error_errno(ret, "Unlocking operation failed: %m");
804
805 /* Revert to locked state */
806 home_set_state(h, HOME_LOCKED);
807 h->current_operation = operation_result_unref(h->current_operation, r, &error);
808 return;
809 }
810
811 r = user_record_good_authentication(h->record);
812 if (r < 0)
813 log_warning_errno(r, "Failed to increase good authentication counter, ignoring: %m");
814 else {
815 r = home_save_record(h);
816 if (r < 0)
817 log_warning_errno(r, "Failed to write home record to disk, ignoring: %m");
818 }
819
820 log_debug("Unlocking operation of %s completed.", h->user_name);
821
822 h->current_operation = operation_result_unref(h->current_operation, r, &error);
823 home_set_state(h, _HOME_STATE_INVALID);
824 return;
825}
826
827static void home_authenticating_finish(Home *h, int ret, UserRecord *hr) {
828 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
829 int r;
830
831 assert(h);
832 assert(IN_SET(h->state, HOME_AUTHENTICATING, HOME_AUTHENTICATING_WHILE_ACTIVE, HOME_AUTHENTICATING_FOR_ACQUIRE));
833
834 if (ret < 0) {
835 if (ret == -ENOKEY)
836 (void) home_count_bad_authentication(h, true);
837
838 (void) convert_worker_errno(h, ret, &error);
839 r = log_error_errno(ret, "Authentication failed: %m");
840 goto finish;
841 }
842
843 if (hr) {
844 r = home_set_record(h, hr);
845 if (r < 0)
846 log_warning_errno(r, "Failed to update home record, ignoring: %m");
847 else {
848 r = user_record_good_authentication(h->record);
849 if (r < 0)
850 log_warning_errno(r, "Failed to increase good authentication counter, ignoring: %m");
851
852 r = home_save_record(h);
853 if (r < 0)
854 log_warning_errno(r, "Failed to write home record to disk, ignoring: %m");
855 }
856 }
857
858 log_debug("Authentication of %s completed.", h->user_name);
859 r = 0;
860
861finish:
862 h->current_operation = operation_result_unref(h->current_operation, r, &error);
863 home_set_state(h, _HOME_STATE_INVALID);
864}
865
866static int home_on_worker_process(sd_event_source *s, const siginfo_t *si, void *userdata) {
867 _cleanup_(user_record_unrefp) UserRecord *hr = NULL;
868 Home *h = userdata;
869 int ret;
870
871 assert(s);
872 assert(si);
873 assert(h);
874
875 assert(h->worker_pid == si->si_pid);
876 assert(h->worker_event_source);
877 assert(h->worker_stdout_fd >= 0);
878
879 (void) hashmap_remove_value(h->manager->homes_by_worker_pid, PID_TO_PTR(h->worker_pid), h);
880
881 h->worker_pid = 0;
882 h->worker_event_source = sd_event_source_unref(h->worker_event_source);
883
884 if (si->si_code != CLD_EXITED) {
885 assert(IN_SET(si->si_code, CLD_KILLED, CLD_DUMPED));
886 ret = log_debug_errno(SYNTHETIC_ERRNO(EPROTO), "Worker process died abnormally with signal %s.", signal_to_string(si->si_status));
887 } else if (si->si_status != EXIT_SUCCESS) {
888 /* If we received an error code via sd_notify(), use it */
889 if (h->worker_error_code != 0)
890 ret = log_debug_errno(h->worker_error_code, "Worker reported error code %s.", errno_to_name(h->worker_error_code));
891 else
892 ret = log_debug_errno(SYNTHETIC_ERRNO(EPROTO), "Worker exited with exit code %i.", si->si_status);
893 } else
894 ret = home_parse_worker_stdout(TAKE_FD(h->worker_stdout_fd), &hr);
895
896 h->worker_stdout_fd = safe_close(h->worker_stdout_fd);
897
898 switch (h->state) {
899
900 case HOME_FIXATING:
901 case HOME_FIXATING_FOR_ACTIVATION:
902 case HOME_FIXATING_FOR_ACQUIRE:
903 home_fixate_finish(h, ret, hr);
904 break;
905
906 case HOME_ACTIVATING:
907 case HOME_ACTIVATING_FOR_ACQUIRE:
908 home_activate_finish(h, ret, hr);
909 break;
910
911 case HOME_DEACTIVATING:
912 home_deactivate_finish(h, ret, hr);
913 break;
914
915 case HOME_LOCKING:
916 home_locking_finish(h, ret, hr);
917 break;
918
919 case HOME_UNLOCKING:
920 case HOME_UNLOCKING_FOR_ACQUIRE:
921 home_unlocking_finish(h, ret, hr);
922 break;
923
924 case HOME_CREATING:
925 home_create_finish(h, ret, hr);
926 break;
927
928 case HOME_REMOVING:
929 home_remove_finish(h, ret, hr);
930 break;
931
932 case HOME_UPDATING:
933 case HOME_UPDATING_WHILE_ACTIVE:
934 case HOME_RESIZING:
935 case HOME_RESIZING_WHILE_ACTIVE:
936 case HOME_PASSWD:
937 case HOME_PASSWD_WHILE_ACTIVE:
938 home_change_finish(h, ret, hr);
939 break;
940
941 case HOME_AUTHENTICATING:
942 case HOME_AUTHENTICATING_WHILE_ACTIVE:
943 case HOME_AUTHENTICATING_FOR_ACQUIRE:
944 home_authenticating_finish(h, ret, hr);
945 break;
946
947 default:
948 assert_not_reached("Unexpected state after worker exited");
949 }
950
951 return 0;
952}
953
954static int home_start_work(Home *h, const char *verb, UserRecord *hr, UserRecord *secret) {
955 _cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
956 _cleanup_(erase_and_freep) char *formatted = NULL;
957 _cleanup_close_ int stdin_fd = -1, stdout_fd = -1;
958 pid_t pid = 0;
959 int r;
960
961 assert(h);
962 assert(verb);
963 assert(hr);
964
965 if (h->worker_pid != 0)
966 return -EBUSY;
967
968 assert(h->worker_stdout_fd < 0);
969 assert(!h->worker_event_source);
970
971 v = json_variant_ref(hr->json);
972
973 if (secret) {
974 JsonVariant *sub = NULL;
975
976 sub = json_variant_by_key(secret->json, "secret");
977 if (!sub)
978 return -ENOKEY;
979
980 r = json_variant_set_field(&v, "secret", sub);
981 if (r < 0)
982 return r;
983 }
984
985 r = json_variant_format(v, 0, &formatted);
986 if (r < 0)
987 return r;
988
989 stdin_fd = acquire_data_fd(formatted, strlen(formatted), 0);
990 if (stdin_fd < 0)
991 return stdin_fd;
992
993 log_debug("Sending to worker: %s", formatted);
994
995 stdout_fd = memfd_create("homework-stdout", MFD_CLOEXEC);
996 if (stdout_fd < 0)
997 return -errno;
998
999 r = safe_fork_full("(sd-homework)",
1000 (int[]) { stdin_fd, stdout_fd }, 2,
1001 FORK_RESET_SIGNALS|FORK_CLOSE_ALL_FDS|FORK_DEATHSIG|FORK_LOG, &pid);
1002 if (r < 0)
1003 return r;
1004 if (r == 0) {
1005 /* Child */
1006
1007 if (setenv("NOTIFY_SOCKET", "/run/systemd/home/notify", 1) < 0) {
1008 log_error_errno(errno, "Failed to set $NOTIFY_SOCKET: %m");
1009 _exit(EXIT_FAILURE);
1010 }
1011
1012 r = rearrange_stdio(stdin_fd, stdout_fd, STDERR_FILENO);
1013 if (r < 0) {
1014 log_error_errno(r, "Failed to rearrange stdin/stdout/stderr: %m");
1015 _exit(EXIT_FAILURE);
1016 }
1017
1018 stdin_fd = stdout_fd = -1; /* have been invalidated by rearrange_stdio() */
1019
1020 execl(SYSTEMD_HOMEWORK_PATH, SYSTEMD_HOMEWORK_PATH, verb, NULL);
1021 log_error_errno(errno, "Failed to invoke " SYSTEMD_HOMEWORK_PATH ": %m");
1022 _exit(EXIT_FAILURE);
1023 }
1024
1025 r = sd_event_add_child(h->manager->event, &h->worker_event_source, pid, WEXITED, home_on_worker_process, h);
1026 if (r < 0)
1027 return r;
1028
1029 (void) sd_event_source_set_description(h->worker_event_source, "worker");
1030
1031 r = hashmap_put(h->manager->homes_by_worker_pid, PID_TO_PTR(pid), h);
1032 if (r < 0) {
1033 h->worker_event_source = sd_event_source_unref(h->worker_event_source);
1034 return r;
1035 }
1036
1037 h->worker_stdout_fd = TAKE_FD(stdout_fd);
1038 h->worker_pid = pid;
1039 h->worker_error_code = 0;
1040
1041 return 0;
1042}
1043
1044static int home_ratelimit(Home *h, sd_bus_error *error) {
1045 int r, ret;
1046
1047 assert(h);
1048
1049 ret = user_record_ratelimit(h->record);
1050 if (ret < 0)
1051 return ret;
1052
1053 if (h->state != HOME_UNFIXATED) {
1054 r = home_save_record(h);
1055 if (r < 0)
1056 log_warning_errno(r, "Failed to save updated record, ignoring: %m");
1057 }
1058
1059 if (ret == 0) {
1060 char buf[FORMAT_TIMESPAN_MAX];
1061 usec_t t, n;
1062
1063 n = now(CLOCK_REALTIME);
1064 t = user_record_ratelimit_next_try(h->record);
1065
1066 if (t != USEC_INFINITY && t > n)
1067 return sd_bus_error_setf(error, BUS_ERROR_AUTHENTICATION_LIMIT_HIT, "Too many login attempts, please try again in %s!",
1068 format_timespan(buf, sizeof(buf), t - n, USEC_PER_SEC));
1069
1070 return sd_bus_error_setf(error, BUS_ERROR_AUTHENTICATION_LIMIT_HIT, "Too many login attempts, please try again later.");
1071 }
1072
1073 return 0;
1074}
1075
1076static int home_fixate_internal(
1077 Home *h,
1078 UserRecord *secret,
1079 HomeState for_state,
1080 sd_bus_error *error) {
1081
1082 int r;
1083
1084 assert(h);
1085 assert(IN_SET(for_state, HOME_FIXATING, HOME_FIXATING_FOR_ACTIVATION, HOME_FIXATING_FOR_ACQUIRE));
1086
1087 r = home_start_work(h, "inspect", h->record, secret);
1088 if (r < 0)
1089 return r;
1090
1091 if (for_state == HOME_FIXATING_FOR_ACTIVATION) {
1092 /* Remember the secret data, since we need it for the activation again, later on. */
1093 user_record_unref(h->secret);
1094 h->secret = user_record_ref(secret);
1095 }
1096
1097 home_set_state(h, for_state);
1098 return 0;
1099}
1100
1101int home_fixate(Home *h, UserRecord *secret, sd_bus_error *error) {
1102 int r;
1103
1104 assert(h);
1105
1106 switch (home_get_state(h)) {
1107 case HOME_ABSENT:
1108 return sd_bus_error_setf(error, BUS_ERROR_HOME_ABSENT, "Home %s is currently missing or not plugged in.", h->user_name);
1109 case HOME_INACTIVE:
1110 case HOME_ACTIVE:
1111 case HOME_LOCKED:
1112 return sd_bus_error_setf(error, BUS_ERROR_HOME_ALREADY_FIXATED, "Home %s is already fixated.", h->user_name);
1113 case HOME_UNFIXATED:
1114 break;
1115 default:
1116 return sd_bus_error_setf(error, BUS_ERROR_HOME_BUSY, "An operation on home %s is currently being executed.", h->user_name);
1117 }
1118
1119 r = home_ratelimit(h, error);
1120 if (r < 0)
1121 return r;
1122
1123 return home_fixate_internal(h, secret, HOME_FIXATING, error);
1124}
1125
1126static int home_activate_internal(Home *h, UserRecord *secret, HomeState for_state, sd_bus_error *error) {
1127 int r;
1128
1129 assert(h);
1130 assert(IN_SET(for_state, HOME_ACTIVATING, HOME_ACTIVATING_FOR_ACQUIRE));
1131
1132 r = home_start_work(h, "activate", h->record, secret);
1133 if (r < 0)
1134 return r;
1135
1136 home_set_state(h, for_state);
1137 return 0;
1138}
1139
1140int home_activate(Home *h, UserRecord *secret, sd_bus_error *error) {
1141 int r;
1142
1143 assert(h);
1144
1145 switch (home_get_state(h)) {
1146 case HOME_UNFIXATED:
1147 return home_fixate_internal(h, secret, HOME_FIXATING_FOR_ACTIVATION, error);
1148 case HOME_ABSENT:
1149 return sd_bus_error_setf(error, BUS_ERROR_HOME_ABSENT, "Home %s is currently missing or not plugged in.", h->user_name);
1150 case HOME_ACTIVE:
1151 return sd_bus_error_setf(error, BUS_ERROR_HOME_ALREADY_ACTIVE, "Home %s is already active.", h->user_name);
1152 case HOME_LOCKED:
1153 return sd_bus_error_setf(error, BUS_ERROR_HOME_LOCKED, "Home %s is currently locked.", h->user_name);
1154 case HOME_INACTIVE:
1155 break;
1156 default:
1157 return sd_bus_error_setf(error, BUS_ERROR_HOME_BUSY, "An operation on home %s is currently being executed.", h->user_name);
1158 }
1159
1160 r = home_ratelimit(h, error);
1161 if (r < 0)
1162 return r;
1163
1164 return home_activate_internal(h, secret, HOME_ACTIVATING, error);
1165}
1166
1167static int home_authenticate_internal(Home *h, UserRecord *secret, HomeState for_state, sd_bus_error *error) {
1168 int r;
1169
1170 assert(h);
1171 assert(IN_SET(for_state, HOME_AUTHENTICATING, HOME_AUTHENTICATING_WHILE_ACTIVE, HOME_AUTHENTICATING_FOR_ACQUIRE));
1172
1173 r = home_start_work(h, "inspect", h->record, secret);
1174 if (r < 0)
1175 return r;
1176
1177 home_set_state(h, for_state);
1178 return 0;
1179}
1180
1181int home_authenticate(Home *h, UserRecord *secret, sd_bus_error *error) {
1182 HomeState state;
1183 int r;
1184
1185 assert(h);
1186
1187 state = home_get_state(h);
1188 switch (state) {
1189 case HOME_ABSENT:
1190 return sd_bus_error_setf(error, BUS_ERROR_HOME_ABSENT, "Home %s is currently missing or not plugged in.", h->user_name);
1191 case HOME_LOCKED:
1192 return sd_bus_error_setf(error, BUS_ERROR_HOME_LOCKED, "Home %s is currently locked.", h->user_name);
1193 case HOME_UNFIXATED:
1194 case HOME_INACTIVE:
1195 case HOME_ACTIVE:
1196 break;
1197 default:
1198 return sd_bus_error_setf(error, BUS_ERROR_HOME_BUSY, "An operation on home %s is currently being executed.", h->user_name);
1199 }
1200
1201 r = home_ratelimit(h, error);
1202 if (r < 0)
1203 return r;
1204
1205 return home_authenticate_internal(h, secret, state == HOME_ACTIVE ? HOME_AUTHENTICATING_WHILE_ACTIVE : HOME_AUTHENTICATING, error);
1206}
1207
1208static int home_deactivate_internal(Home *h, bool force, sd_bus_error *error) {
1209 int r;
1210
1211 assert(h);
1212
1213 r = home_start_work(h, force ? "deactivate-force" : "deactivate", h->record, NULL);
1214 if (r < 0)
1215 return r;
1216
1217 home_set_state(h, HOME_DEACTIVATING);
1218 return 0;
1219}
1220
1221int home_deactivate(Home *h, bool force, sd_bus_error *error) {
1222 assert(h);
1223
1224 switch (home_get_state(h)) {
1225 case HOME_UNFIXATED:
1226 case HOME_ABSENT:
1227 case HOME_INACTIVE:
1228 return sd_bus_error_setf(error, BUS_ERROR_HOME_NOT_ACTIVE, "Home %s not active.", h->user_name);
1229 case HOME_LOCKED:
1230 return sd_bus_error_setf(error, BUS_ERROR_HOME_LOCKED, "Home %s is currently locked.", h->user_name);
1231 case HOME_ACTIVE:
1232 break;
1233 default:
1234 return sd_bus_error_setf(error, BUS_ERROR_HOME_BUSY, "An operation on home %s is currently being executed.", h->user_name);
1235 }
1236
1237 return home_deactivate_internal(h, force, error);
1238}
1239
1240int home_create(Home *h, UserRecord *secret, sd_bus_error *error) {
1241 int r;
1242
1243 assert(h);
1244
1245 switch (home_get_state(h)) {
1246 case HOME_INACTIVE:
1247 if (h->record->storage < 0)
1248 break; /* if no storage is defined we don't know what precisely to look for, hence
1249 * HOME_INACTIVE is OK in that case too. */
1250
1251 if (IN_SET(user_record_test_image_path(h->record), USER_TEST_MAYBE, USER_TEST_UNDEFINED))
1252 break; /* And if the image path test isn't conclusive, let's also go on */
1253
1254 _fallthrough_;
1255 case HOME_UNFIXATED:
1256 return sd_bus_error_setf(error, BUS_ERROR_HOME_EXISTS, "Home of user %s already exists.", h->user_name);
1257 case HOME_ABSENT:
1258 break;
1259 case HOME_ACTIVE:
1260 case HOME_LOCKED:
1261 default:
1262 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);
1263 }
1264
1265 if (h->record->enforce_password_policy == false)
1266 log_debug("Password quality check turned off for account, skipping.");
1267 else {
1268 r = quality_check_password(h->record, secret, error);
1269 if (r < 0)
1270 return r;
1271 }
1272
1273 r = home_start_work(h, "create", h->record, secret);
1274 if (r < 0)
1275 return r;
1276
1277 home_set_state(h, HOME_CREATING);
1278 return 0;
1279}
1280
1281int home_remove(Home *h, sd_bus_error *error) {
1282 HomeState state;
1283 int r;
1284
1285 assert(h);
1286
1287 state = home_get_state(h);
1288 switch (state) {
1289 case HOME_ABSENT: /* If the home directory is absent, then this is just like unregistering */
1290 return home_unregister(h, error);
1291 case HOME_LOCKED:
1292 return sd_bus_error_setf(error, BUS_ERROR_HOME_LOCKED, "Home %s is currently locked.", h->user_name);
1293 case HOME_UNFIXATED:
1294 case HOME_INACTIVE:
1295 break;
1296 case HOME_ACTIVE:
1297 default:
1298 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);
1299 }
1300
1301 r = home_start_work(h, "remove", h->record, NULL);
1302 if (r < 0)
1303 return r;
1304
1305 home_set_state(h, HOME_REMOVING);
1306 return 0;
1307}
1308
1309static int user_record_extend_with_binding(UserRecord *hr, UserRecord *with_binding, UserRecordLoadFlags flags, UserRecord **ret) {
1310 _cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
1311 _cleanup_(user_record_unrefp) UserRecord *nr = NULL;
1312 JsonVariant *binding;
1313 int r;
1314
1315 assert(hr);
1316 assert(with_binding);
1317 assert(ret);
1318
1319 assert_se(v = json_variant_ref(hr->json));
1320
1321 binding = json_variant_by_key(with_binding->json, "binding");
1322 if (binding) {
1323 r = json_variant_set_field(&v, "binding", binding);
1324 if (r < 0)
1325 return r;
1326 }
1327
1328 nr = user_record_new();
1329 if (!nr)
1330 return -ENOMEM;
1331
1332 r = user_record_load(nr, v, flags);
1333 if (r < 0)
1334 return r;
1335
1336 *ret = TAKE_PTR(nr);
1337 return 0;
1338}
1339
1340static int home_update_internal(Home *h, const char *verb, UserRecord *hr, UserRecord *secret, sd_bus_error *error) {
1341 _cleanup_(user_record_unrefp) UserRecord *new_hr = NULL, *saved_secret = NULL, *signed_hr = NULL;
1342 int r, c;
1343
1344 assert(h);
1345 assert(verb);
1346 assert(hr);
1347
1348 if (!user_record_compatible(hr, h->record))
1349 return sd_bus_error_setf(error, BUS_ERROR_HOME_RECORD_MISMATCH, "Updated user record is not compatible with existing one.");
1350 c = user_record_compare_last_change(hr, h->record); /* refuse downgrades */
1351 if (c < 0)
1352 return sd_bus_error_setf(error, BUS_ERROR_HOME_RECORD_DOWNGRADE, "Refusing to update to older home record.");
1353
1354 if (!secret && FLAGS_SET(hr->mask, USER_RECORD_SECRET)) {
1355 r = user_record_clone(hr, USER_RECORD_EXTRACT_SECRET, &saved_secret);
1356 if (r < 0)
1357 return r;
1358
1359 secret = saved_secret;
1360 }
1361
1362 r = manager_verify_user_record(h->manager, hr);
1363 switch (r) {
1364
1365 case USER_RECORD_UNSIGNED:
1366 if (h->signed_locally <= 0) /* If the existing record is not owned by us, don't accept an
1367 * unsigned new record. i.e. only implicitly sign new records
1368 * that where previously signed by us too. */
1369 return sd_bus_error_setf(error, BUS_ERROR_HOME_RECORD_SIGNED, "Home %s is signed and cannot be modified locally.", h->user_name);
1370
1371 /* The updated record is not signed, then do so now */
1372 r = manager_sign_user_record(h->manager, hr, &signed_hr, error);
1373 if (r < 0)
1374 return r;
1375
1376 hr = signed_hr;
1377 break;
1378
1379 case USER_RECORD_SIGNED_EXCLUSIVE:
1380 case USER_RECORD_SIGNED:
1381 case USER_RECORD_FOREIGN:
1382 /* Has already been signed. Great! */
1383 break;
1384
1385 case -ENOKEY:
1386 default:
1387 return r;
1388 }
1389
1390 r = user_record_extend_with_binding(hr, h->record, USER_RECORD_LOAD_MASK_SECRET, &new_hr);
1391 if (r < 0)
1392 return r;
1393
1394 if (c == 0) {
1395 /* different payload but same lastChangeUSec field? That's not cool! */
1396
1397 r = user_record_masked_equal(new_hr, h->record, USER_RECORD_REGULAR|USER_RECORD_PRIVILEGED|USER_RECORD_PER_MACHINE);
1398 if (r < 0)
1399 return r;
1400 if (r == 0)
1401 return sd_bus_error_setf(error, BUS_ERROR_HOME_RECORD_MISMATCH, "Home record different but timestamp remained the same, refusing.");
1402 }
1403
1404 r = home_start_work(h, verb, new_hr, secret);
1405 if (r < 0)
1406 return r;
1407
1408 return 0;
1409}
1410
1411int home_update(Home *h, UserRecord *hr, sd_bus_error *error) {
1412 HomeState state;
1413 int r;
1414
1415 assert(h);
1416 assert(hr);
1417
1418 state = home_get_state(h);
1419 switch (state) {
1420 case HOME_UNFIXATED:
1421 return sd_bus_error_setf(error, BUS_ERROR_HOME_UNFIXATED, "Home %s has not been fixated yet.", h->user_name);
1422 case HOME_ABSENT:
1423 return sd_bus_error_setf(error, BUS_ERROR_HOME_ABSENT, "Home %s is currently missing or not plugged in.", h->user_name);
1424 case HOME_LOCKED:
1425 return sd_bus_error_setf(error, BUS_ERROR_HOME_LOCKED, "Home %s is currently locked.", h->user_name);
1426 case HOME_INACTIVE:
1427 case HOME_ACTIVE:
1428 break;
1429 default:
1430 return sd_bus_error_setf(error, BUS_ERROR_HOME_BUSY, "An operation on home %s is currently being executed.", h->user_name);
1431 }
1432
1433 r = home_ratelimit(h, error);
1434 if (r < 0)
1435 return r;
1436
1437 r = home_update_internal(h, "update", hr, NULL, error);
1438 if (r < 0)
1439 return r;
1440
1441 home_set_state(h, state == HOME_ACTIVE ? HOME_UPDATING_WHILE_ACTIVE : HOME_UPDATING);
1442 return 0;
1443}
1444
1445int home_resize(Home *h, uint64_t disk_size, UserRecord *secret, sd_bus_error *error) {
1446 _cleanup_(user_record_unrefp) UserRecord *c = NULL;
1447 HomeState state;
1448 int r;
1449
1450 assert(h);
1451
1452 state = home_get_state(h);
1453 switch (state) {
1454 case HOME_UNFIXATED:
1455 return sd_bus_error_setf(error, BUS_ERROR_HOME_UNFIXATED, "Home %s has not been fixated yet.", h->user_name);
1456 case HOME_ABSENT:
1457 return sd_bus_error_setf(error, BUS_ERROR_HOME_ABSENT, "Home %s is currently missing or not plugged in.", h->user_name);
1458 case HOME_LOCKED:
1459 return sd_bus_error_setf(error, BUS_ERROR_HOME_LOCKED, "Home %s is currently locked.", h->user_name);
1460 case HOME_INACTIVE:
1461 case HOME_ACTIVE:
1462 break;
1463 default:
1464 return sd_bus_error_setf(error, BUS_ERROR_HOME_BUSY, "An operation on home %s is currently being executed.", h->user_name);
1465 }
1466
1467 r = home_ratelimit(h, error);
1468 if (r < 0)
1469 return r;
1470
1471 if (disk_size == UINT64_MAX || disk_size == h->record->disk_size) {
1472 if (h->record->disk_size == UINT64_MAX)
80ace4f2 1473 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "No disk size to resize to specified.");
70a5db58
LP		 1474
1475 c = user_record_ref(h->record); /* Shortcut if size is unspecified or matches the record */
1476 } else {
1477 _cleanup_(user_record_unrefp) UserRecord *signed_c = NULL;
1478
1479 if (h->signed_locally <= 0) /* Don't allow changing of records not signed only by us */
1480 return sd_bus_error_setf(error, BUS_ERROR_HOME_RECORD_SIGNED, "Home %s is signed and cannot be modified locally.", h->user_name);
1481
1482 r = user_record_clone(h->record, USER_RECORD_LOAD_REFUSE_SECRET, &c);
1483 if (r < 0)
1484 return r;
1485
1486 r = user_record_set_disk_size(c, disk_size);
1487 if (r == -ERANGE)
1488 return sd_bus_error_setf(error, BUS_ERROR_BAD_HOME_SIZE, "Requested size for home %s out of acceptable range.", h->user_name);
1489 if (r < 0)
1490 return r;
1491
1492 r = user_record_update_last_changed(c, false);
1493 if (r == -ECHRNG)
1494 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);
1495 if (r < 0)
1496 return r;
1497
1498 r = manager_sign_user_record(h->manager, c, &signed_c, error);
1499 if (r < 0)
1500 return r;
1501
1502 user_record_unref(c);
1503 c = TAKE_PTR(signed_c);
1504 }
1505
1506 r = home_update_internal(h, "resize", c, secret, error);
1507 if (r < 0)
1508 return r;
1509
1510 home_set_state(h, state == HOME_ACTIVE ? HOME_RESIZING_WHILE_ACTIVE : HOME_RESIZING);
1511 return 0;
1512}
1513
1514static int home_may_change_password(
1515 Home *h,
1516 sd_bus_error *error) {
1517
1518 int r;
1519
1520 assert(h);
1521
1522 r = user_record_test_password_change_required(h->record);
1523 if (IN_SET(r, -EKEYREVOKED, -EOWNERDEAD, -EKEYEXPIRED))
1524 return 0; /* expired in some form, but chaning is allowed */
1525 if (IN_SET(r, -EKEYREJECTED, -EROFS))
1526 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);
1527 if (r < 0)
1528 return log_error_errno(r, "Failed to test password expiry: %m");
1529
1530 return 0; /* not expired */
1531}
1532
1533int home_passwd(Home *h,
1534 UserRecord *new_secret,
1535 UserRecord *old_secret,
1536 sd_bus_error *error) {
1537
1538 _cleanup_(user_record_unrefp) UserRecord *c = NULL, *merged_secret = NULL, *signed_c = NULL;
1539 HomeState state;
1540 int r;
1541
1542 assert(h);
1543
1544 if (h->signed_locally <= 0) /* Don't allow changing of records not signed only by us */
1545 return sd_bus_error_setf(error, BUS_ERROR_HOME_RECORD_SIGNED, "Home %s is signed and cannot be modified locally.", h->user_name);
1546
1547 state = home_get_state(h);
1548 switch (state) {
1549 case HOME_UNFIXATED:
1550 return sd_bus_error_setf(error, BUS_ERROR_HOME_UNFIXATED, "Home %s has not been fixated yet.", h->user_name);
1551 case HOME_ABSENT:
1552 return sd_bus_error_setf(error, BUS_ERROR_HOME_ABSENT, "Home %s is currently missing or not plugged in.", h->user_name);
1553 case HOME_LOCKED:
1554 return sd_bus_error_setf(error, BUS_ERROR_HOME_LOCKED, "Home %s is currently locked.", h->user_name);
1555 case HOME_INACTIVE:
1556 case HOME_ACTIVE:
1557 break;
1558 default:
1559 return sd_bus_error_setf(error, BUS_ERROR_HOME_BUSY, "An operation on home %s is currently being executed.", h->user_name);
1560 }
1561
1562 r = home_ratelimit(h, error);
1563 if (r < 0)
1564 return r;
1565
1566 r = home_may_change_password(h, error);
1567 if (r < 0)
1568 return r;
1569
1570 r = user_record_clone(h->record, USER_RECORD_LOAD_REFUSE_SECRET, &c);
1571 if (r < 0)
1572 return r;
1573
1574 merged_secret = user_record_new();
1575 if (!merged_secret)
1576 return -ENOMEM;
1577
1578 r = user_record_merge_secret(merged_secret, old_secret);
1579 if (r < 0)
1580 return r;
1581
1582 r = user_record_merge_secret(merged_secret, new_secret);
1583 if (r < 0)
1584 return r;
1585
1586 if (!strv_isempty(new_secret->password)) {
1587 /* Update the password only if one is specified, otherwise let's just reuse the old password
1588 * data. This is useful as a way to propagate updated user records into the LUKS backends
1589 * properly. */
1590
1591 r = user_record_make_hashed_password(c, new_secret->password, /* extend = */ false);
1592 if (r < 0)
1593 return r;
1594
1595 r = user_record_set_password_change_now(c, -1 /* remove */);
1596 if (r < 0)
1597 return r;
1598 }
1599
1600 r = user_record_update_last_changed(c, true);
1601 if (r == -ECHRNG)
1602 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);
1603 if (r < 0)
1604 return r;
1605
1606 r = manager_sign_user_record(h->manager, c, &signed_c, error);
1607 if (r < 0)
1608 return r;
1609
1610 if (c->enforce_password_policy == false)
1611 log_debug("Password quality check turned off for account, skipping.");
1612 else {
1613 r = quality_check_password(c, merged_secret, error);
1614 if (r < 0)
1615 return r;
1616 }
1617
1618 r = home_update_internal(h, "passwd", signed_c, merged_secret, error);
1619 if (r < 0)
1620 return r;
1621
1622 home_set_state(h, state == HOME_ACTIVE ? HOME_PASSWD_WHILE_ACTIVE : HOME_PASSWD);
1623 return 0;
1624}
1625
1626int home_unregister(Home *h, sd_bus_error *error) {
1627 int r;
1628
1629 assert(h);
1630
1631 switch (home_get_state(h)) {
1632 case HOME_UNFIXATED:
1633 return sd_bus_error_setf(error, BUS_ERROR_HOME_UNFIXATED, "Home %s is not registered.", h->user_name);
1634 case HOME_LOCKED:
1635 return sd_bus_error_setf(error, BUS_ERROR_HOME_LOCKED, "Home %s is currently locked.", h->user_name);
1636 case HOME_ABSENT:
1637 case HOME_INACTIVE:
1638 break;
1639 case HOME_ACTIVE:
1640 default:
1641 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);
1642 }
1643
1644 r = home_unlink_record(h);
1645 if (r < 0)
1646 return r;
1647
1648 /* And destroy the whole entry. The caller needs to be prepared for that. */
1649 h = home_free(h);
1650 return 1;
1651}
1652
1653int home_lock(Home *h, sd_bus_error *error) {
1654 int r;
1655
1656 assert(h);
1657
1658 switch (home_get_state(h)) {
1659 case HOME_UNFIXATED:
1660 case HOME_ABSENT:
1661 case HOME_INACTIVE:
1662 return sd_bus_error_setf(error, BUS_ERROR_HOME_NOT_ACTIVE, "Home %s is not active.", h->user_name);
1663 case HOME_LOCKED:
1664 return sd_bus_error_setf(error, BUS_ERROR_HOME_LOCKED, "Home %s is already locked.", h->user_name);
1665 case HOME_ACTIVE:
1666 break;
1667 default:
1668 return sd_bus_error_setf(error, BUS_ERROR_HOME_BUSY, "An operation on home %s is currently being executed.", h->user_name);
1669 }
1670
1671 r = home_start_work(h, "lock", h->record, NULL);
1672 if (r < 0)
1673 return r;
1674
1675 home_set_state(h, HOME_LOCKING);
1676 return 0;
1677}
1678
1679static int home_unlock_internal(Home *h, UserRecord *secret, HomeState for_state, sd_bus_error *error) {
1680 int r;
1681
1682 assert(h);
1683 assert(IN_SET(for_state, HOME_UNLOCKING, HOME_UNLOCKING_FOR_ACQUIRE));
1684
1685 r = home_start_work(h, "unlock", h->record, secret);
1686 if (r < 0)
1687 return r;
1688
1689 home_set_state(h, for_state);
1690 return 0;
1691}
1692
1693int home_unlock(Home *h, UserRecord *secret, sd_bus_error *error) {
1694 int r;
1695 assert(h);
1696
1697 r = home_ratelimit(h, error);
1698 if (r < 0)
1699 return r;
1700
1701 switch (home_get_state(h)) {
1702 case HOME_UNFIXATED:
1703 case HOME_ABSENT:
1704 case HOME_INACTIVE:
1705 case HOME_ACTIVE:
1706 return sd_bus_error_setf(error, BUS_ERROR_HOME_NOT_LOCKED, "Home %s is not locked.", h->user_name);
1707 case HOME_LOCKED:
1708 break;
1709 default:
1710 return sd_bus_error_setf(error, BUS_ERROR_HOME_BUSY, "An operation on home %s is currently being executed.", h->user_name);
1711 }
1712
1713 return home_unlock_internal(h, secret, HOME_UNLOCKING, error);
1714}
1715
1716HomeState home_get_state(Home *h) {
1717 assert(h);
1718
1719 /* When the state field is initialized, it counts. */
1720 if (h->state >= 0)
1721 return h->state;
1722
1723 /* Otherwise, let's see if the home directory is mounted. If so, we assume for sure the home
1724 * directory is active */
1725 if (user_record_test_home_directory(h->record) == USER_TEST_MOUNTED)
1726 return HOME_ACTIVE;
1727
1728 /* And if we see the image being gone, we report this as absent */
1729 if (user_record_test_image_path(h->record) == USER_TEST_ABSENT)
1730 return HOME_ABSENT;
1731
1732 /* And for all other cases we return "inactive". */
1733 return HOME_INACTIVE;
1734}
1735
1736void home_process_notify(Home *h, char **l) {
1737 const char *e;
1738 int error;
1739 int r;
1740
1741 assert(h);
1742
1743 e = strv_env_get(l, "ERRNO");
1744 if (!e) {
1745 log_debug("Got notify message lacking ERRNO= field, ignoring.");
1746 return;
1747 }
1748
1749 r = safe_atoi(e, &error);
1750 if (r < 0) {
1751 log_debug_errno(r, "Failed to parse receieved error number, ignoring: %s", e);
1752 return;
1753 }
1754 if (error <= 0) {
1755 log_debug("Error number is out of range: %i", error);
1756 return;
1757 }
1758
1759 h->worker_error_code = error;
1760}
1761
1762int home_killall(Home *h) {
1763 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1764 _cleanup_free_ char *unit = NULL;
1765 int r;
1766
1767 assert(h);
1768
1769 if (!uid_is_valid(h->uid))
1770 return 0;
1771
1772 assert(h->uid > 0); /* We never should be UID 0 */
1773
1774 /* Let's kill everything matching the specified UID */
1775 r = safe_fork("(sd-killer)", FORK_RESET_SIGNALS|FORK_CLOSE_ALL_FDS|FORK_DEATHSIG|FORK_WAIT|FORK_LOG, NULL);
1776 if (r < 0)
1777 return r;
1778 if (r == 0) {
1779 gid_t gid;
1780
1781 /* Child */
1782
1783 gid = user_record_gid(h->record);
1784 if (setresgid(gid, gid, gid) < 0) {
1785 log_error_errno(errno, "Failed to change GID to " GID_FMT ": %m", gid);
1786 _exit(EXIT_FAILURE);
1787 }
1788
1789 if (setgroups(0, NULL) < 0) {
1790 log_error_errno(errno, "Failed to reset auxiliary groups list: %m");
1791 _exit(EXIT_FAILURE);
1792 }
1793
1794 if (setresuid(h->uid, h->uid, h->uid) < 0) {
1795 log_error_errno(errno, "Failed to change UID to " UID_FMT ": %m", h->uid);
1796 _exit(EXIT_FAILURE);
1797 }
1798
1799 if (kill(-1, SIGKILL) < 0) {
1800 log_error_errno(errno, "Failed to kill all processes of UID " UID_FMT ": %m", h->uid);
1801 _exit(EXIT_FAILURE);
1802 }
1803
1804 _exit(EXIT_SUCCESS);
1805 }
1806
1807 /* Let's also kill everything in the user's slice */
1808 if (asprintf(&unit, "user-" UID_FMT ".slice", h->uid) < 0)
1809 return log_oom();
1810
1811 r = sd_bus_call_method(
1812 h->manager->bus,
1813 "org.freedesktop.systemd1",
1814 "/org/freedesktop/systemd1",
1815 "org.freedesktop.systemd1.Manager",
1816 "KillUnit",
1817 &error,
1818 NULL,
1819 "ssi", unit, "all", SIGKILL);
1820 if (r < 0)
1821 log_full_errno(sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT) ? LOG_DEBUG : LOG_WARNING,
1822 r, "Failed to kill login processes of user, ignoring: %s", bus_error_message(&error, r));
1823
1824 return 1;
1825}
1826
1827static int home_get_disk_status_luks(
1828 Home *h,
1829 HomeState state,
1830 uint64_t *ret_disk_size,
1831 uint64_t *ret_disk_usage,
1832 uint64_t *ret_disk_free,
1833 uint64_t *ret_disk_ceiling,
1834 uint64_t *ret_disk_floor) {
1835
1836 uint64_t disk_size = UINT64_MAX, disk_usage = UINT64_MAX, disk_free = UINT64_MAX,
1837 disk_ceiling = UINT64_MAX, disk_floor = UINT64_MAX,
1838 stat_used = UINT64_MAX, fs_size = UINT64_MAX, header_size = 0;
1839
1840 struct statfs sfs;
1841 const char *hd;
1842 int r;
1843
1844 assert(h);
1845 assert(ret_disk_size);
1846 assert(ret_disk_usage);
1847 assert(ret_disk_free);
1848 assert(ret_disk_ceiling);
1849
1850 if (state != HOME_ABSENT) {
1851 const char *ip;
1852
1853 ip = user_record_image_path(h->record);
1854 if (ip) {
1855 struct stat st;
1856
1857 if (stat(ip, &st) < 0)
1858 log_debug_errno(errno, "Failed to stat() %s, ignoring: %m", ip);
1859 else if (S_ISREG(st.st_mode)) {
1860 _cleanup_free_ char *parent = NULL;
1861
1862 disk_size = st.st_size;
1863 stat_used = st.st_blocks * 512;
1864
1865 parent = dirname_malloc(ip);
1866 if (!parent)
1867 return log_oom();
1868
1869 if (statfs(parent, &sfs) < 0)
1870 log_debug_errno(errno, "Failed to statfs() %s, ignoring: %m", parent);
1871 else
1872 disk_ceiling = stat_used + sfs.f_bsize * sfs.f_bavail;
1873
1874 } else if (S_ISBLK(st.st_mode)) {
1875 _cleanup_free_ char *szbuf = NULL;
1876 char p[SYS_BLOCK_PATH_MAX("/size")];
1877
1878 /* Let's read the size off sysfs, so that we don't have to open the device */
1879 xsprintf_sys_block_path(p, "/size", st.st_rdev);
1880 r = read_one_line_file(p, &szbuf);
1881 if (r < 0)
1882 log_debug_errno(r, "Failed to read %s, ignoring: %m", p);
1883 else {
1884 uint64_t sz;
1885
1886 r = safe_atou64(szbuf, &sz);
1887 if (r < 0)
1888 log_debug_errno(r, "Failed to parse %s, ignoring: %s", p, szbuf);
1889 else
1890 disk_size = sz * 512;
1891 }
1892 } else
1893 log_debug("Image path is not a block device or regular file, not able to acquire size.");
1894 }
1895 }
1896
1897 if (!HOME_STATE_IS_ACTIVE(state))
1898 goto finish;
1899
1900 hd = user_record_home_directory(h->record);
1901 if (!hd)
1902 goto finish;
1903
1904 if (statfs(hd, &sfs) < 0) {
80ace4f2 1905 log_debug_errno(errno, "Failed to statfs() %s, ignoring: %m", hd);
70a5db58
LP		 1906 goto finish;
1907 }
1908
1909 disk_free = sfs.f_bsize * sfs.f_bavail;
1910 fs_size = sfs.f_bsize * sfs.f_blocks;
1911 if (disk_size != UINT64_MAX && disk_size > fs_size)
1912 header_size = disk_size - fs_size;
1913
1914 /* We take a perspective from the user here (as opposed to from the host): the used disk space is the
1915 * difference from the limit and what's free. This makes a difference if sparse mode is not used: in
1916 * that case the image is pre-allocated and thus appears all used from the host PoV but is not used
1917 * up at all yet from the user's PoV.
1918 *
1919 * That said, we use use the stat() reported loopback file size as upper boundary: our footprint can
1920 * never be larger than what we take up on the lowest layers. */
1921
1922 if (disk_size != UINT64_MAX && disk_size > disk_free) {
1923 disk_usage = disk_size - disk_free;
1924
1925 if (stat_used != UINT64_MAX && disk_usage > stat_used)
1926 disk_usage = stat_used;
1927 } else
1928 disk_usage = stat_used;
1929
1930 /* If we have the magic, determine floor preferably by magic */
1931 disk_floor = minimal_size_by_fs_magic(sfs.f_type) + header_size;
1932
1933finish:
1934 /* If we don't know the magic, go by file system name */
1935 if (disk_floor == UINT64_MAX)
1936 disk_floor = minimal_size_by_fs_name(user_record_file_system_type(h->record));
1937
1938 *ret_disk_size = disk_size;
1939 *ret_disk_usage = disk_usage;
1940 *ret_disk_free = disk_free;
1941 *ret_disk_ceiling = disk_ceiling;
1942 *ret_disk_floor = disk_floor;
1943
1944 return 0;
1945}
1946
1947static int home_get_disk_status_directory(
1948 Home *h,
1949 HomeState state,
1950 uint64_t *ret_disk_size,
1951 uint64_t *ret_disk_usage,
1952 uint64_t *ret_disk_free,
1953 uint64_t *ret_disk_ceiling,
1954 uint64_t *ret_disk_floor) {
1955
1956 uint64_t disk_size = UINT64_MAX, disk_usage = UINT64_MAX, disk_free = UINT64_MAX,
1957 disk_ceiling = UINT64_MAX, disk_floor = UINT64_MAX;
1958 struct statfs sfs;
1959 struct dqblk req;
1960 const char *path = NULL;
1961 int r;
1962
1963 assert(ret_disk_size);
1964 assert(ret_disk_usage);
1965 assert(ret_disk_free);
1966 assert(ret_disk_ceiling);
1967 assert(ret_disk_floor);
1968
1969 if (HOME_STATE_IS_ACTIVE(state))
1970 path = user_record_home_directory(h->record);
1971
1972 if (!path) {
1973 if (state == HOME_ABSENT)
1974 goto finish;
1975
1976 path = user_record_image_path(h->record);
1977 }
1978
1979 if (!path)
1980 goto finish;
1981
1982 if (statfs(path, &sfs) < 0)
1983 log_debug_errno(errno, "Failed to statfs() %s, ignoring: %m", path);
1984 else {
1985 disk_free = sfs.f_bsize * sfs.f_bavail;
1986 disk_size = sfs.f_bsize * sfs.f_blocks;
1987
1988 /* We don't initialize disk_usage from statfs() data here, since the device is likely not used
1989 * by us alone, and disk_usage should only reflect our own use. */
1990 }
1991
1992 if (IN_SET(h->record->storage, USER_CLASSIC, USER_DIRECTORY, USER_SUBVOLUME)) {
1993
1994 r = btrfs_is_subvol(path);
1995 if (r < 0)
1996 log_debug_errno(r, "Failed to determine whether %s is a btrfs subvolume: %m", path);
1997 else if (r > 0) {
1998 BtrfsQuotaInfo qi;
1999
2000 r = btrfs_subvol_get_subtree_quota(path, 0, &qi);
2001 if (r < 0)
2002 log_debug_errno(r, "Failed to query btrfs subtree quota, ignoring: %m");
2003 else {
2004 disk_usage = qi.referenced;
2005
2006 if (disk_free != UINT64_MAX) {
2007 disk_ceiling = qi.referenced + disk_free;
2008
2009 if (disk_size != UINT64_MAX && disk_ceiling > disk_size)
2010 disk_ceiling = disk_size;
2011 }
2012
2013 if (qi.referenced_max != UINT64_MAX) {
2014 if (disk_size != UINT64_MAX)
2015 disk_size = MIN(qi.referenced_max, disk_size);
2016 else
2017 disk_size = qi.referenced_max;
2018 }
2019
2020 if (disk_size != UINT64_MAX) {
2021 if (disk_size > disk_usage)
2022 disk_free = disk_size - disk_usage;
2023 else
2024 disk_free = 0;
2025 }
2026 }
2027
2028 goto finish;
2029 }
2030 }
2031
2032 if (IN_SET(h->record->storage, USER_CLASSIC, USER_DIRECTORY, USER_FSCRYPT)) {
2033 r = quotactl_path(QCMD_FIXED(Q_GETQUOTA, USRQUOTA), path, h->uid, &req);
2034 if (r < 0) {
2035 if (ERRNO_IS_NOT_SUPPORTED(r)) {
2036 log_debug_errno(r, "No UID quota support on %s.", path);
2037 goto finish;
2038 }
2039
2040 if (r != -ESRCH) {
2041 log_debug_errno(r, "Failed to query disk quota for UID " UID_FMT ": %m", h->uid);
2042 goto finish;
2043 }
2044
2045 disk_usage = 0; /* No record of this user? then nothing was used */
2046 } else {
2047 if (FLAGS_SET(req.dqb_valid, QIF_SPACE) && disk_free != UINT64_MAX) {
2048 disk_ceiling = req.dqb_curspace + disk_free;
2049
2050 if (disk_size != UINT64_MAX && disk_ceiling > disk_size)
2051 disk_ceiling = disk_size;
2052 }
2053
2054 if (FLAGS_SET(req.dqb_valid, QIF_BLIMITS)) {
2055 uint64_t q;
2056
2057 /* Take the minimum of the quota and the available disk space here */
2058 q = req.dqb_bhardlimit * QIF_DQBLKSIZE;
2059 if (disk_size != UINT64_MAX)
2060 disk_size = MIN(disk_size, q);
2061 else
2062 disk_size = q;
2063 }
2064 if (FLAGS_SET(req.dqb_valid, QIF_SPACE)) {
2065 disk_usage = req.dqb_curspace;
2066
2067 if (disk_size != UINT64_MAX) {
2068 if (disk_size > disk_usage)
2069 disk_free = disk_size - disk_usage;
2070 else
2071 disk_free = 0;
2072 }
2073 }
2074 }
2075 }
2076
2077finish:
2078 *ret_disk_size = disk_size;
2079 *ret_disk_usage = disk_usage;
2080 *ret_disk_free = disk_free;
2081 *ret_disk_ceiling = disk_ceiling;
2082 *ret_disk_floor = disk_floor;
2083
2084 return 0;
2085}
2086
2087int home_augment_status(
2088 Home *h,
2089 UserRecordLoadFlags flags,
2090 UserRecord **ret) {
2091
2092 uint64_t disk_size = UINT64_MAX, disk_usage = UINT64_MAX, disk_free = UINT64_MAX, disk_ceiling = UINT64_MAX, disk_floor = UINT64_MAX;
2093 _cleanup_(json_variant_unrefp) JsonVariant *j = NULL, *v = NULL, *m = NULL, *status = NULL;
2094 _cleanup_(user_record_unrefp) UserRecord *ur = NULL;
2095 char ids[SD_ID128_STRING_MAX];
2096 HomeState state;
2097 sd_id128_t id;
2098 int r;
2099
2100 assert(h);
2101 assert(ret);
2102
2103 /* We are supposed to add this, this can't be on hence. */
2104 assert(!FLAGS_SET(flags, USER_RECORD_STRIP_STATUS));
2105
2106 r = sd_id128_get_machine(&id);
2107 if (r < 0)
2108 return r;
2109
2110 state = home_get_state(h);
2111
2112 switch (h->record->storage) {
2113
2114 case USER_LUKS:
2115 r = home_get_disk_status_luks(h, state, &disk_size, &disk_usage, &disk_free, &disk_ceiling, &disk_floor);
2116 if (r < 0)
2117 return r;
2118
2119 break;
2120
2121 case USER_CLASSIC:
2122 case USER_DIRECTORY:
2123 case USER_SUBVOLUME:
2124 case USER_FSCRYPT:
2125 case USER_CIFS:
2126 r = home_get_disk_status_directory(h, state, &disk_size, &disk_usage, &disk_free, &disk_ceiling, &disk_floor);
2127 if (r < 0)
2128 return r;
2129
2130 break;
2131
2132 default:
2133 ; /* unset */
2134 }
2135
2136 if (disk_floor == UINT64_MAX || (disk_usage != UINT64_MAX && disk_floor < disk_usage))
2137 disk_floor = disk_usage;
2138 if (disk_floor == UINT64_MAX || disk_floor < USER_DISK_SIZE_MIN)
2139 disk_floor = USER_DISK_SIZE_MIN;
2140 if (disk_ceiling == UINT64_MAX || disk_ceiling > USER_DISK_SIZE_MAX)
2141 disk_ceiling = USER_DISK_SIZE_MAX;
2142
2143 r = json_build(&status,
2144 JSON_BUILD_OBJECT(
2145 JSON_BUILD_PAIR("state", JSON_BUILD_STRING(home_state_to_string(state))),
2146 JSON_BUILD_PAIR("service", JSON_BUILD_STRING("io.systemd.Home")),
2147 JSON_BUILD_PAIR_CONDITION(disk_size != UINT64_MAX, "diskSize", JSON_BUILD_UNSIGNED(disk_size)),
2148 JSON_BUILD_PAIR_CONDITION(disk_usage != UINT64_MAX, "diskUsage", JSON_BUILD_UNSIGNED(disk_usage)),
2149 JSON_BUILD_PAIR_CONDITION(disk_free != UINT64_MAX, "diskFree", JSON_BUILD_UNSIGNED(disk_free)),
2150 JSON_BUILD_PAIR_CONDITION(disk_ceiling != UINT64_MAX, "diskCeiling", JSON_BUILD_UNSIGNED(disk_ceiling)),
2151 JSON_BUILD_PAIR_CONDITION(disk_floor != UINT64_MAX, "diskFloor", JSON_BUILD_UNSIGNED(disk_floor)),
2152 JSON_BUILD_PAIR_CONDITION(h->signed_locally >= 0, "signedLocally", JSON_BUILD_BOOLEAN(h->signed_locally))
2153 ));
2154 if (r < 0)
2155 return r;
2156
2157 j = json_variant_ref(h->record->json);
2158 v = json_variant_ref(json_variant_by_key(j, "status"));
2159 m = json_variant_ref(json_variant_by_key(v, sd_id128_to_string(id, ids)));
2160
2161 r = json_variant_filter(&m, STRV_MAKE("diskSize", "diskUsage", "diskFree", "diskCeiling", "diskFloor", "signedLocally"));
2162 if (r < 0)
2163 return r;
2164
2165 r = json_variant_merge(&m, status);
2166 if (r < 0)
2167 return r;
2168
2169 r = json_variant_set_field(&v, ids, m);
2170 if (r < 0)
2171 return r;
2172
2173 r = json_variant_set_field(&j, "status", v);
2174 if (r < 0)
2175 return r;
2176
2177 ur = user_record_new();
2178 if (!ur)
2179 return -ENOMEM;
2180
2181 r = user_record_load(ur, j, flags);
2182 if (r < 0)
2183 return r;
2184
2185 ur->incomplete =
2186 FLAGS_SET(h->record->mask, USER_RECORD_PRIVILEGED) &&
2187 !FLAGS_SET(ur->mask, USER_RECORD_PRIVILEGED);
2188
2189 *ret = TAKE_PTR(ur);
2190 return 0;
2191}
2192
2193static int on_home_ref_eof(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
2194 _cleanup_(operation_unrefp) Operation *o = NULL;
2195 Home *h = userdata;
2196
2197 assert(s);
2198 assert(h);
2199
2200 if (h->ref_event_source_please_suspend == s)
2201 h->ref_event_source_please_suspend = sd_event_source_disable_unref(h->ref_event_source_please_suspend);
2202
2203 if (h->ref_event_source_dont_suspend == s)
2204 h->ref_event_source_dont_suspend = sd_event_source_disable_unref(h->ref_event_source_dont_suspend);
2205
2206 if (h->ref_event_source_dont_suspend || h->ref_event_source_please_suspend)
2207 return 0;
2208
2209 log_info("Got notification that all sessions of user %s ended, deactivating automatically.", h->user_name);
2210
2211 o = operation_new(OPERATION_PIPE_EOF, NULL);
2212 if (!o) {
2213 log_oom();
2214 return 0;
2215 }
2216
2217 home_schedule_operation(h, o, NULL);
2218 return 0;
2219}
2220
2221int home_create_fifo(Home *h, bool please_suspend) {
2222 _cleanup_close_ int ret_fd = -1;
2223 sd_event_source **ss;
2224 const char *fn, *suffix;
2225 int r;
2226
2227 assert(h);
2228
2229 if (please_suspend) {
2230 suffix = ".please-suspend";
2231 ss = &h->ref_event_source_please_suspend;
2232 } else {
2233 suffix = ".dont-suspend";
2234 ss = &h->ref_event_source_dont_suspend;
2235 }
2236
2237 fn = strjoina("/run/systemd/home/", h->user_name, suffix);
2238
2239 if (!*ss) {
2240 _cleanup_close_ int ref_fd = -1;
2241
2242 (void) mkdir("/run/systemd/home/", 0755);
2243 if (mkfifo(fn, 0600) < 0 && errno != EEXIST)
2244 return log_error_errno(errno, "Failed to create FIFO %s: %m", fn);
2245
2246 ref_fd = open(fn, O_RDONLY|O_CLOEXEC|O_NONBLOCK);
2247 if (ref_fd < 0)
2248 return log_error_errno(errno, "Failed to open FIFO %s for reading: %m", fn);
2249
2250 r = sd_event_add_io(h->manager->event, ss, ref_fd, 0, on_home_ref_eof, h);
2251 if (r < 0)
2252 return log_error_errno(r, "Failed to allocate reference FIFO event source: %m");
2253
2254 (void) sd_event_source_set_description(*ss, "acquire-ref");
2255
2256 r = sd_event_source_set_priority(*ss, SD_EVENT_PRIORITY_IDLE-1);
2257 if (r < 0)
2258 return r;
2259
2260 r = sd_event_source_set_io_fd_own(*ss, true);
2261 if (r < 0)
2262 return log_error_errno(r, "Failed to pass ownership of FIFO event fd to event source: %m");
2263
2264 TAKE_FD(ref_fd);
2265 }
2266
2267 ret_fd = open(fn, O_WRONLY|O_CLOEXEC|O_NONBLOCK);
2268 if (ret_fd < 0)
2269 return log_error_errno(errno, "Failed to open FIFO %s for writing: %m", fn);
2270
2271 return TAKE_FD(ret_fd);
2272}
2273
2274static int home_dispatch_acquire(Home *h, Operation *o) {
2275 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2276 int (*call)(Home *h, UserRecord *secret, HomeState for_state, sd_bus_error *error) = NULL;
2277 HomeState for_state;
2278 int r;
2279
2280 assert(h);
2281 assert(o);
2282 assert(o->type == OPERATION_ACQUIRE);
2283
2284 switch (home_get_state(h)) {
2285
2286 case HOME_UNFIXATED:
2287 for_state = HOME_FIXATING_FOR_ACQUIRE;
2288 call = home_fixate_internal;
2289 break;
2290
2291 case HOME_ABSENT:
2292 r = sd_bus_error_setf(&error, BUS_ERROR_HOME_ABSENT, "Home %s is currently missing or not plugged in.", h->user_name);
2293 break;
2294
2295 case HOME_INACTIVE:
2296 for_state = HOME_ACTIVATING_FOR_ACQUIRE;
2297 call = home_activate_internal;
2298 break;
2299
2300 case HOME_ACTIVE:
2301 for_state = HOME_AUTHENTICATING_FOR_ACQUIRE;
2302 call = home_authenticate_internal;
2303 break;
2304
2305 case HOME_LOCKED:
2306 for_state = HOME_UNLOCKING_FOR_ACQUIRE;
2307 call = home_unlock_internal;
2308 break;
2309
2310 default:
2311 /* All other cases means we are currently executing an operation, which means the job remains
2312 * pending. */
2313 return 0;
2314 }
2315
2316 assert(!h->current_operation);
2317
2318 if (call) {
2319 r = home_ratelimit(h, &error);
2320 if (r >= 0)
2321 r = call(h, o->secret, for_state, &error);
2322 }
2323
2324 if (r != 0) /* failure or completed */
2325 operation_result(o, r, &error);
2326 else /* ongoing */
2327 h->current_operation = operation_ref(o);
2328
2329 return 1;
2330}
2331
2332static int home_dispatch_release(Home *h, Operation *o) {
2333 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2334 int r;
2335
2336 assert(h);
2337 assert(o);
2338 assert(o->type == OPERATION_RELEASE);
2339
2340 if (h->ref_event_source_dont_suspend || h->ref_event_source_please_suspend)
2341 /* If there's now a reference again, then let's abort the release attempt */
2342 r = sd_bus_error_setf(&error, BUS_ERROR_HOME_BUSY, "Home %s is currently referenced.", h->user_name);
2343 else {
2344 switch (home_get_state(h)) {
2345
2346 case HOME_UNFIXATED:
2347 case HOME_ABSENT:
2348 case HOME_INACTIVE:
2349 r = 0; /* done */
2350 break;
2351
2352 case HOME_LOCKED:
2353 r = sd_bus_error_setf(&error, BUS_ERROR_HOME_LOCKED, "Home %s is currently locked.", h->user_name);
2354 break;
2355
2356 case HOME_ACTIVE:
2357 r = home_deactivate_internal(h, false, &error);
2358 break;
2359
2360 default:
2361 /* All other cases means we are currently executing an operation, which means the job remains
2362 * pending. */
2363 return 0;
2364 }
2365 }
2366
2367 assert(!h->current_operation);
2368
2369 if (r <= 0) /* failure or completed */
2370 operation_result(o, r, &error);
2371 else /* ongoing */
2372 h->current_operation = operation_ref(o);
2373
2374 return 1;
2375}
2376
2377static int home_dispatch_lock_all(Home *h, Operation *o) {
2378 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2379 int r;
2380
2381 assert(h);
2382 assert(o);
2383 assert(o->type == OPERATION_LOCK_ALL);
2384
2385 switch (home_get_state(h)) {
2386
2387 case HOME_UNFIXATED:
2388 case HOME_ABSENT:
2389 case HOME_INACTIVE:
2390 log_info("Home %s is not active, no locking necessary.", h->user_name);
2391 r = 0; /* done */
2392 break;
2393
2394 case HOME_LOCKED:
2395 log_info("Home %s is already locked.", h->user_name);
2396 r = 0; /* done */
2397 break;
2398
2399 case HOME_ACTIVE:
2400 log_info("Locking home %s.", h->user_name);
2401 r = home_lock(h, &error);
2402 break;
2403
2404 default:
2405 /* All other cases means we are currently executing an operation, which means the job remains
2406 * pending. */
2407 return 0;
2408 }
2409
2410 assert(!h->current_operation);
2411
2412 if (r != 0) /* failure or completed */
2413 operation_result(o, r, &error);
2414 else /* ongoing */
2415 h->current_operation = operation_ref(o);
2416
2417 return 1;
2418}
2419
2420static int home_dispatch_pipe_eof(Home *h, Operation *o) {
2421 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2422 int r;
2423
2424 assert(h);
2425 assert(o);
2426 assert(o->type == OPERATION_PIPE_EOF);
2427
2428 if (h->ref_event_source_please_suspend || h->ref_event_source_dont_suspend)
2429 return 1; /* Hmm, there's a reference again, let's cancel this */
2430
2431 switch (home_get_state(h)) {
2432
2433 case HOME_UNFIXATED:
2434 case HOME_ABSENT:
2435 case HOME_INACTIVE:
2436 log_info("Home %s already deactivated, no automatic deactivation needed.", h->user_name);
2437 break;
2438
2439 case HOME_DEACTIVATING:
2440 log_info("Home %s is already being deactivated, automatic deactivated unnecessary.", h->user_name);
2441 break;
2442
2443 case HOME_ACTIVE:
2444 r = home_deactivate_internal(h, false, &error);
2445 if (r < 0)
2446 log_warning_errno(r, "Failed to deactivate %s, ignoring: %s", h->user_name, bus_error_message(&error, r));
2447 break;
2448
2449 case HOME_LOCKED:
2450 default:
2451 /* If the device is locked or any operation is being executed, let's leave this pending */
2452 return 0;
2453 }
2454
2455 /* Note that we don't call operation_fail() or operation_success() here, because this kind of
2456 * operation has no message associated with it, and thus there's no need to propagate success. */
2457
2458 assert(!o->message);
2459 return 1;
2460}
2461
2462static int home_dispatch_deactivate_force(Home *h, Operation *o) {
2463 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2464 int r;
2465
2466 assert(h);
2467 assert(o);
2468 assert(o->type == OPERATION_DEACTIVATE_FORCE);
2469
2470 switch (home_get_state(h)) {
2471
2472 case HOME_UNFIXATED:
2473 case HOME_ABSENT:
2474 case HOME_INACTIVE:
2475 log_debug("Home %s already deactivated, no forced deactivation due to unplug needed.", h->user_name);
2476 break;
2477
2478 case HOME_DEACTIVATING:
2479 log_debug("Home %s is already being deactivated, forced deactivation due to unplug unnecessary.", h->user_name);
2480 break;
2481
2482 case HOME_ACTIVE:
2483 case HOME_LOCKED:
2484 r = home_deactivate_internal(h, true, &error);
2485 if (r < 0)
2486 log_warning_errno(r, "Failed to forcibly deactivate %s, ignoring: %s", h->user_name, bus_error_message(&error, r));
2487 break;
2488
2489 default:
2490 /* If any operation is being executed, let's leave this pending */
2491 return 0;
2492 }
2493
2494 /* Note that we don't call operation_fail() or operation_success() here, because this kind of
2495 * operation has no message associated with it, and thus there's no need to propagate success. */
2496
2497 assert(!o->message);
2498 return 1;
2499}
2500
2501static int on_pending(sd_event_source *s, void *userdata) {
2502 Home *h = userdata;
2503 Operation *o;
2504 int r;
2505
2506 assert(s);
2507 assert(h);
2508
2509 o = ordered_set_first(h->pending_operations);
2510 if (o) {
2511 static int (* const operation_table[_OPERATION_MAX])(Home *h, Operation *o) = {
2512 [OPERATION_ACQUIRE] = home_dispatch_acquire,
2513 [OPERATION_RELEASE] = home_dispatch_release,
2514 [OPERATION_LOCK_ALL] = home_dispatch_lock_all,
2515 [OPERATION_PIPE_EOF] = home_dispatch_pipe_eof,
2516 [OPERATION_DEACTIVATE_FORCE] = home_dispatch_deactivate_force,
2517 };
2518
2519 assert(operation_table[o->type]);
2520 r = operation_table[o->type](h, o);
2521 if (r != 0) {
2522 /* The operation completed, let's remove it from the pending list, and exit while
2523 * leaving the event source enabled as it is. */
2524 assert_se(ordered_set_remove(h->pending_operations, o) == o);
2525 operation_unref(o);
2526 return 0;
2527 }
2528 }
2529
2530 /* Nothing to do anymore, let's turn off this event source */
2531 r = sd_event_source_set_enabled(s, SD_EVENT_OFF);
2532 if (r < 0)
2533 return log_error_errno(r, "Failed to disable event source: %m");
2534
2535 return 0;
2536}
2537
2538int home_schedule_operation(Home *h, Operation *o, sd_bus_error *error) {
2539 int r;
2540
2541 assert(h);
2542
2543 if (o) {
2544 if (ordered_set_size(h->pending_operations) >= PENDING_OPERATIONS_MAX)
2545 return sd_bus_error_setf(error, BUS_ERROR_TOO_MANY_OPERATIONS, "Too many client operations requested");
2546
2547 r = ordered_set_ensure_allocated(&h->pending_operations, &operation_hash_ops);
2548 if (r < 0)
2549 return r;
2550
2551 r = ordered_set_put(h->pending_operations, o);
2552 if (r < 0)
2553 return r;
2554
2555 operation_ref(o);
2556 }
2557
2558 if (!h->pending_event_source) {
2559 r = sd_event_add_defer(h->manager->event, &h->pending_event_source, on_pending, h);
2560 if (r < 0)
2561 return log_error_errno(r, "Failed to allocate pending defer event source: %m");
2562
2563 (void) sd_event_source_set_description(h->pending_event_source, "pending");
2564
2565 r = sd_event_source_set_priority(h->pending_event_source, SD_EVENT_PRIORITY_IDLE);
2566 if (r < 0)
2567 return r;
2568 }
2569
2570 r = sd_event_source_set_enabled(h->pending_event_source, SD_EVENT_ON);
2571 if (r < 0)
2572 return log_error_errno(r, "Failed to trigger pending event source: %m");
2573
2574 return 0;
2575}
2576
2577static int home_get_image_path_seat(Home *h, char **ret) {
2578 _cleanup_(sd_device_unrefp) sd_device *d = NULL;
2579 _cleanup_free_ char *c = NULL;
2580 const char *ip, *seat;
2581 struct stat st;
2582 int r;
2583
2584 assert(h);
2585
2586 if (user_record_storage(h->record) != USER_LUKS)
2587 return -ENXIO;
2588
2589 ip = user_record_image_path(h->record);
2590 if (!ip)
2591 return -ENXIO;
2592
2593 if (!path_startswith(ip, "/dev/"))
2594 return -ENXIO;
2595
2596 if (stat(ip, &st) < 0)
2597 return -errno;
2598
2599 if (!S_ISBLK(st.st_mode))
2600 return -ENOTBLK;
2601
2602 r = sd_device_new_from_devnum(&d, 'b', st.st_rdev);
2603 if (r < 0)
2604 return r;
2605
2606 r = sd_device_get_property_value(d, "ID_SEAT", &seat);
2607 if (r == -ENOENT) /* no property means seat0 */
2608 seat = "seat0";
2609 else if (r < 0)
2610 return r;
2611
2612 c = strdup(seat);
2613 if (!c)
2614 return -ENOMEM;
2615
2616 *ret = TAKE_PTR(c);
2617 return 0;
2618}
2619
2620int home_auto_login(Home *h, char ***ret_seats) {
2621 _cleanup_free_ char *seat = NULL, *seat2 = NULL;
2622
2623 assert(h);
2624 assert(ret_seats);
2625
2626 (void) home_get_image_path_seat(h, &seat);
2627
2628 if (h->record->auto_login > 0 && !streq_ptr(seat, "seat0")) {
2629 /* For now, when the auto-login boolean is set for a user, let's make it mean
2630 * "seat0". Eventually we can extend the concept and allow configuration of any kind of seat,
2631 * but let's keep simple initially, most likely the feature is interesting on single-user
2632 * systems anyway, only.
2633 *
2634 * We filter out users marked for auto-login in we know for sure their home directory is
2635 * absent. */
2636
2637 if (user_record_test_image_path(h->record) != USER_TEST_ABSENT) {
2638 seat2 = strdup("seat0");
2639 if (!seat2)
2640 return -ENOMEM;
2641 }
2642 }
2643
2644 if (seat || seat2) {
2645 _cleanup_strv_free_ char **list = NULL;
2646 size_t i = 0;
2647
2648 list = new(char*, 3);
2649 if (!list)
2650 return -ENOMEM;
2651
2652 if (seat)
2653 list[i++] = TAKE_PTR(seat);
2654 if (seat2)
2655 list[i++] = TAKE_PTR(seat2);
2656
2657 list[i] = NULL;
2658 *ret_seats = TAKE_PTR(list);
2659 return 1;
2660 }
2661
2662 *ret_seats = NULL;
2663 return 0;
2664}
2665
2666int home_set_current_message(Home *h, sd_bus_message *m) {
2667 assert(h);
2668
2669 if (!m)
2670 return 0;
2671
2672 if (h->current_operation)
2673 return -EBUSY;
2674
2675 h->current_operation = operation_new(OPERATION_IMMEDIATE, m);
2676 if (!h->current_operation)
2677 return -ENOMEM;
2678
2679 return 1;
2680}
2681
2682static const char* const home_state_table[_HOME_STATE_MAX] = {
2683 [HOME_UNFIXATED] = "unfixated",
2684 [HOME_ABSENT] = "absent",
2685 [HOME_INACTIVE] = "inactive",
2686 [HOME_FIXATING] = "fixating",
2687 [HOME_FIXATING_FOR_ACTIVATION] = "fixating-for-activation",
2688 [HOME_FIXATING_FOR_ACQUIRE] = "fixating-for-acquire",
2689 [HOME_ACTIVATING] = "activating",
2690 [HOME_ACTIVATING_FOR_ACQUIRE] = "activating-for-acquire",
2691 [HOME_DEACTIVATING] = "deactivating",
2692 [HOME_ACTIVE] = "active",
2693 [HOME_LOCKING] = "locking",
2694 [HOME_LOCKED] = "locked",
2695 [HOME_UNLOCKING] = "unlocking",
2696 [HOME_UNLOCKING_FOR_ACQUIRE] = "unlocking-for-acquire",
2697 [HOME_CREATING] = "creating",
2698 [HOME_REMOVING] = "removing",
2699 [HOME_UPDATING] = "updating",
2700 [HOME_UPDATING_WHILE_ACTIVE] = "updating-while-active",
2701 [HOME_RESIZING] = "resizing",
2702 [HOME_RESIZING_WHILE_ACTIVE] = "resizing-while-active",
2703 [HOME_PASSWD] = "passwd",
2704 [HOME_PASSWD_WHILE_ACTIVE] = "passwd-while-active",
2705 [HOME_AUTHENTICATING] = "authenticating",
2706 [HOME_AUTHENTICATING_WHILE_ACTIVE] = "authenticating-while-active",
2707 [HOME_AUTHENTICATING_FOR_ACQUIRE] = "authenticating-for-acquire",
2708};
2709
2710DEFINE_STRING_TABLE_LOOKUP(home_state, HomeState);
Unnamed repository; edit this file 'description' to name the repository.