Lines Matching refs:v
52 struct dm_verity *v; member
86 static sector_t verity_map_sector(struct dm_verity *v, sector_t bi_sector) in verity_map_sector() argument
88 return v->data_start + dm_target_offset(v->ti, bi_sector); in verity_map_sector()
97 static sector_t verity_position_at_level(struct dm_verity *v, sector_t block, in verity_position_at_level() argument
100 return block >> (level * v->hash_per_block_bits); in verity_position_at_level()
103 static int verity_hash_update(struct dm_verity *v, struct ahash_request *req, in verity_hash_update() argument
134 static int verity_hash_init(struct dm_verity *v, struct ahash_request *req, in verity_hash_init() argument
139 ahash_request_set_tfm(req, v->tfm); in verity_hash_init()
153 if (likely(v->salt_size && (v->version >= 1))) in verity_hash_init()
154 r = verity_hash_update(v, req, v->salt, v->salt_size, wait); in verity_hash_init()
159 static int verity_hash_final(struct dm_verity *v, struct ahash_request *req, in verity_hash_final() argument
164 if (unlikely(v->salt_size && (!v->version))) { in verity_hash_final()
165 r = verity_hash_update(v, req, v->salt, v->salt_size, wait); in verity_hash_final()
179 int verity_hash(struct dm_verity *v, struct ahash_request *req, in verity_hash() argument
185 r = verity_hash_init(v, req, &wait, may_sleep); in verity_hash()
189 r = verity_hash_update(v, req, data, len, &wait); in verity_hash()
193 r = verity_hash_final(v, req, digest, &wait); in verity_hash()
199 static void verity_hash_at_level(struct dm_verity *v, sector_t block, int level, in verity_hash_at_level() argument
202 sector_t position = verity_position_at_level(v, block, level); in verity_hash_at_level()
205 *hash_block = v->hash_level_block[level] + (position >> v->hash_per_block_bits); in verity_hash_at_level()
210 idx = position & ((1 << v->hash_per_block_bits) - 1); in verity_hash_at_level()
211 if (!v->version) in verity_hash_at_level()
212 *offset = idx * v->digest_size; in verity_hash_at_level()
214 *offset = idx << (v->hash_dev_block_bits - v->hash_per_block_bits); in verity_hash_at_level()
220 static int verity_handle_err(struct dm_verity *v, enum verity_block_type type, in verity_handle_err() argument
226 struct mapped_device *md = dm_table_get_md(v->ti->table); in verity_handle_err()
229 v->hash_failed = true; in verity_handle_err()
231 if (v->corrupted_errs >= DM_VERITY_MAX_CORRUPTED_ERRS) in verity_handle_err()
234 v->corrupted_errs++; in verity_handle_err()
247 DMERR_LIMIT("%s: %s block %llu is corrupted", v->data_dev->name, in verity_handle_err()
250 if (v->corrupted_errs == DM_VERITY_MAX_CORRUPTED_ERRS) in verity_handle_err()
251 DMERR("%s: reached maximum errors", v->data_dev->name); in verity_handle_err()
259 if (v->mode == DM_VERITY_MODE_LOGGING) in verity_handle_err()
262 if (v->mode == DM_VERITY_MODE_RESTART) in verity_handle_err()
265 if (v->mode == DM_VERITY_MODE_PANIC) in verity_handle_err()
282 static int verity_verify_level(struct dm_verity *v, struct dm_verity_io *io, in verity_verify_level() argument
293 verity_hash_at_level(v, block, level, &hash_block, &offset); in verity_verify_level()
296 data = dm_bufio_get(v->bufio, hash_block, &buf); in verity_verify_level()
306 data = dm_bufio_read(v->bufio, hash_block, &buf); in verity_verify_level()
319 r = verity_hash(v, verity_io_hash_req(v, io), in verity_verify_level()
320 data, 1 << v->hash_dev_block_bits, in verity_verify_level()
321 verity_io_real_digest(v, io), !io->in_tasklet); in verity_verify_level()
325 if (likely(memcmp(verity_io_real_digest(v, io), want_digest, in verity_verify_level()
326 v->digest_size) == 0)) in verity_verify_level()
337 else if (verity_fec_decode(v, io, in verity_verify_level()
341 else if (verity_handle_err(v, in verity_verify_level()
350 memcpy(want_digest, data, v->digest_size); in verity_verify_level()
362 int verity_hash_for_block(struct dm_verity *v, struct dm_verity_io *io, in verity_hash_for_block() argument
367 if (likely(v->levels)) { in verity_hash_for_block()
375 r = verity_verify_level(v, io, block, 0, true, digest); in verity_hash_for_block()
380 memcpy(digest, v->root_digest, v->digest_size); in verity_hash_for_block()
382 for (i = v->levels - 1; i >= 0; i--) { in verity_hash_for_block()
383 r = verity_verify_level(v, io, block, i, false, digest); in verity_hash_for_block()
388 if (!r && v->zero_digest) in verity_hash_for_block()
389 *is_zero = !memcmp(v->zero_digest, digest, v->digest_size); in verity_hash_for_block()
399 static int verity_for_io_block(struct dm_verity *v, struct dm_verity_io *io, in verity_for_io_block() argument
402 unsigned int todo = 1 << v->data_dev_block_bits; in verity_for_io_block()
403 struct bio *bio = dm_bio_from_per_bio_data(io, v->ti->per_io_data_size); in verity_for_io_block()
405 struct ahash_request *req = verity_io_hash_req(v, io); in verity_for_io_block()
443 int verity_for_bv_block(struct dm_verity *v, struct dm_verity_io *io, in verity_for_bv_block() argument
445 int (*process)(struct dm_verity *v, in verity_for_bv_block() argument
449 unsigned int todo = 1 << v->data_dev_block_bits; in verity_for_bv_block()
450 struct bio *bio = dm_bio_from_per_bio_data(io, v->ti->per_io_data_size); in verity_for_bv_block()
464 r = process(v, io, page, len); in verity_for_bv_block()
477 static int verity_recheck_copy(struct dm_verity *v, struct dm_verity_io *io, in verity_recheck_copy() argument
486 static noinline int verity_recheck(struct dm_verity *v, struct dm_verity_io *io, in verity_recheck() argument
495 page = mempool_alloc(&v->recheck_pool, GFP_NOIO); in verity_recheck()
502 io_req.client = v->io; in verity_recheck()
503 io_loc.bdev = v->data_dev->bdev; in verity_recheck()
504 io_loc.sector = cur_block << (v->data_dev_block_bits - SECTOR_SHIFT); in verity_recheck()
505 io_loc.count = 1 << (v->data_dev_block_bits - SECTOR_SHIFT); in verity_recheck()
510 r = verity_hash(v, verity_io_hash_req(v, io), buffer, in verity_recheck()
511 1 << v->data_dev_block_bits, in verity_recheck()
512 verity_io_real_digest(v, io), true); in verity_recheck()
516 if (memcmp(verity_io_real_digest(v, io), in verity_recheck()
517 verity_io_want_digest(v, io), v->digest_size)) { in verity_recheck()
523 r = verity_for_bv_block(v, io, &start, verity_recheck_copy); in verity_recheck()
529 mempool_free(page, &v->recheck_pool); in verity_recheck()
534 static int verity_bv_zero(struct dm_verity *v, struct dm_verity_io *io, in verity_bv_zero() argument
544 static inline void verity_bv_skip_block(struct dm_verity *v, in verity_bv_skip_block() argument
548 struct bio *bio = dm_bio_from_per_bio_data(io, v->ti->per_io_data_size); in verity_bv_skip_block()
550 bio_advance_iter(bio, iter, 1 << v->data_dev_block_bits); in verity_bv_skip_block()
559 struct dm_verity *v = io->v; in verity_verify_io() local
564 struct bio *bio = dm_bio_from_per_bio_data(io, v->ti->per_io_data_size); in verity_verify_io()
580 struct ahash_request *req = verity_io_hash_req(v, io); in verity_verify_io()
582 if (v->validated_blocks && bio->bi_status == BLK_STS_OK && in verity_verify_io()
583 likely(test_bit(cur_block, v->validated_blocks))) { in verity_verify_io()
584 verity_bv_skip_block(v, io, iter); in verity_verify_io()
588 r = verity_hash_for_block(v, io, cur_block, in verity_verify_io()
589 verity_io_want_digest(v, io), in verity_verify_io()
599 r = verity_for_bv_block(v, io, iter, in verity_verify_io()
607 r = verity_hash_init(v, req, &wait, !io->in_tasklet); in verity_verify_io()
612 r = verity_for_io_block(v, io, iter, &wait); in verity_verify_io()
616 r = verity_hash_final(v, req, verity_io_real_digest(v, io), in verity_verify_io()
621 if (likely(memcmp(verity_io_real_digest(v, io), in verity_verify_io()
622 verity_io_want_digest(v, io), v->digest_size) == 0)) { in verity_verify_io()
623 if (v->validated_blocks) in verity_verify_io()
624 set_bit(cur_block, v->validated_blocks); in verity_verify_io()
633 } else if (verity_recheck(v, io, start, cur_block) == 0) { in verity_verify_io()
634 if (v->validated_blocks) in verity_verify_io()
635 set_bit(cur_block, v->validated_blocks); in verity_verify_io()
638 } else if (verity_fec_decode(v, io, DM_VERITY_BLOCK_TYPE_DATA, in verity_verify_io()
649 if (verity_handle_err(v, DM_VERITY_BLOCK_TYPE_DATA, in verity_verify_io()
672 struct dm_verity *v = io->v; in verity_finish_io() local
673 struct bio *bio = dm_bio_from_per_bio_data(io, v->ti->per_io_data_size); in verity_finish_io()
698 (!verity_fec_is_enabled(io->v) || in verity_end_io()
706 queue_work(io->v->verify_wq, &io->work); in verity_end_io()
718 struct dm_verity *v = pw->v; in verity_prefetch_io() local
721 for (i = v->levels - 2; i >= 0; i--) { in verity_prefetch_io()
724 verity_hash_at_level(v, pw->block, i, &hash_block_start, NULL); in verity_prefetch_io()
725 verity_hash_at_level(v, pw->block + pw->n_blocks - 1, i, &hash_block_end, NULL); in verity_prefetch_io()
729 cluster >>= v->data_dev_block_bits; in verity_prefetch_io()
738 if (unlikely(hash_block_end >= v->hash_blocks)) in verity_prefetch_io()
739 hash_block_end = v->hash_blocks - 1; in verity_prefetch_io()
742 dm_bufio_prefetch(v->bufio, hash_block_start, in verity_prefetch_io()
749 static void verity_submit_prefetch(struct dm_verity *v, struct dm_verity_io *io) in verity_submit_prefetch() argument
755 if (v->validated_blocks) { in verity_submit_prefetch()
756 while (n_blocks && test_bit(block, v->validated_blocks)) { in verity_submit_prefetch()
761 v->validated_blocks)) in verity_submit_prefetch()
774 pw->v = v; in verity_submit_prefetch()
777 queue_work(v->verify_wq, &pw->work); in verity_submit_prefetch()
786 struct dm_verity *v = ti->private; in verity_map() local
789 bio_set_dev(bio, v->data_dev->bdev); in verity_map()
790 bio->bi_iter.bi_sector = verity_map_sector(v, bio->bi_iter.bi_sector); in verity_map()
793 ((1 << (v->data_dev_block_bits - SECTOR_SHIFT)) - 1)) { in verity_map()
799 (v->data_dev_block_bits - SECTOR_SHIFT) > v->data_blocks) { in verity_map()
808 io->v = v; in verity_map()
810 io->block = bio->bi_iter.bi_sector >> (v->data_dev_block_bits - SECTOR_SHIFT); in verity_map()
811 io->n_blocks = bio->bi_iter.bi_size >> v->data_dev_block_bits; in verity_map()
819 verity_submit_prefetch(v, io); in verity_map()
832 struct dm_verity *v = ti->private; in verity_status() local
839 DMEMIT("%c", v->hash_failed ? 'C' : 'V'); in verity_status()
843 v->version, in verity_status()
844 v->data_dev->name, in verity_status()
845 v->hash_dev->name, in verity_status()
846 1 << v->data_dev_block_bits, in verity_status()
847 1 << v->hash_dev_block_bits, in verity_status()
848 (unsigned long long)v->data_blocks, in verity_status()
849 (unsigned long long)v->hash_start, in verity_status()
850 v->alg_name in verity_status()
852 for (x = 0; x < v->digest_size; x++) in verity_status()
853 DMEMIT("%02x", v->root_digest[x]); in verity_status()
855 if (!v->salt_size) in verity_status()
858 for (x = 0; x < v->salt_size; x++) in verity_status()
859 DMEMIT("%02x", v->salt[x]); in verity_status()
860 if (v->mode != DM_VERITY_MODE_EIO) in verity_status()
862 if (verity_fec_is_enabled(v)) in verity_status()
864 if (v->zero_digest) in verity_status()
866 if (v->validated_blocks) in verity_status()
868 if (v->use_tasklet) in verity_status()
870 if (v->signature_key_desc) in verity_status()
875 if (v->mode != DM_VERITY_MODE_EIO) { in verity_status()
877 switch (v->mode) { in verity_status()
891 if (v->zero_digest) in verity_status()
893 if (v->validated_blocks) in verity_status()
895 if (v->use_tasklet) in verity_status()
897 sz = verity_fec_status_table(v, sz, result, maxlen); in verity_status()
898 if (v->signature_key_desc) in verity_status()
900 " %s", v->signature_key_desc); in verity_status()
905 DMEMIT(",hash_failed=%c", v->hash_failed ? 'C' : 'V'); in verity_status()
906 DMEMIT(",verity_version=%u", v->version); in verity_status()
907 DMEMIT(",data_device_name=%s", v->data_dev->name); in verity_status()
908 DMEMIT(",hash_device_name=%s", v->hash_dev->name); in verity_status()
909 DMEMIT(",verity_algorithm=%s", v->alg_name); in verity_status()
912 for (x = 0; x < v->digest_size; x++) in verity_status()
913 DMEMIT("%02x", v->root_digest[x]); in verity_status()
916 if (!v->salt_size) in verity_status()
919 for (x = 0; x < v->salt_size; x++) in verity_status()
920 DMEMIT("%02x", v->salt[x]); in verity_status()
922 DMEMIT(",ignore_zero_blocks=%c", v->zero_digest ? 'y' : 'n'); in verity_status()
923 DMEMIT(",check_at_most_once=%c", v->validated_blocks ? 'y' : 'n'); in verity_status()
924 if (v->signature_key_desc) in verity_status()
925 DMEMIT(",root_hash_sig_key_desc=%s", v->signature_key_desc); in verity_status()
927 if (v->mode != DM_VERITY_MODE_EIO) { in verity_status()
929 switch (v->mode) { in verity_status()
950 struct dm_verity *v = ti->private; in verity_prepare_ioctl() local
952 *bdev = v->data_dev->bdev; in verity_prepare_ioctl()
954 if (v->data_start || ti->len != bdev_nr_sectors(v->data_dev->bdev)) in verity_prepare_ioctl()
962 struct dm_verity *v = ti->private; in verity_iterate_devices() local
964 return fn(ti, v->data_dev, v->data_start, ti->len, data); in verity_iterate_devices()
969 struct dm_verity *v = ti->private; in verity_io_hints() local
971 if (limits->logical_block_size < 1 << v->data_dev_block_bits) in verity_io_hints()
972 limits->logical_block_size = 1 << v->data_dev_block_bits; in verity_io_hints()
974 if (limits->physical_block_size < 1 << v->data_dev_block_bits) in verity_io_hints()
975 limits->physical_block_size = 1 << v->data_dev_block_bits; in verity_io_hints()
982 struct dm_verity *v = ti->private; in verity_dtr() local
984 if (v->verify_wq) in verity_dtr()
985 destroy_workqueue(v->verify_wq); in verity_dtr()
987 mempool_exit(&v->recheck_pool); in verity_dtr()
988 if (v->io) in verity_dtr()
989 dm_io_client_destroy(v->io); in verity_dtr()
991 if (v->bufio) in verity_dtr()
992 dm_bufio_client_destroy(v->bufio); in verity_dtr()
994 kvfree(v->validated_blocks); in verity_dtr()
995 kfree(v->salt); in verity_dtr()
996 kfree(v->root_digest); in verity_dtr()
997 kfree(v->zero_digest); in verity_dtr()
999 if (v->tfm) in verity_dtr()
1000 crypto_free_ahash(v->tfm); in verity_dtr()
1002 kfree(v->alg_name); in verity_dtr()
1004 if (v->hash_dev) in verity_dtr()
1005 dm_put_device(ti, v->hash_dev); in verity_dtr()
1007 if (v->data_dev) in verity_dtr()
1008 dm_put_device(ti, v->data_dev); in verity_dtr()
1010 verity_fec_dtr(v); in verity_dtr()
1012 kfree(v->signature_key_desc); in verity_dtr()
1014 if (v->use_tasklet) in verity_dtr()
1017 kfree(v); in verity_dtr()
1020 static int verity_alloc_most_once(struct dm_verity *v) in verity_alloc_most_once() argument
1022 struct dm_target *ti = v->ti; in verity_alloc_most_once()
1025 if (v->data_blocks > INT_MAX) { in verity_alloc_most_once()
1030 v->validated_blocks = kvcalloc(BITS_TO_LONGS(v->data_blocks), in verity_alloc_most_once()
1033 if (!v->validated_blocks) { in verity_alloc_most_once()
1041 static int verity_alloc_zero_digest(struct dm_verity *v) in verity_alloc_zero_digest() argument
1047 v->zero_digest = kmalloc(v->digest_size, GFP_KERNEL); in verity_alloc_zero_digest()
1049 if (!v->zero_digest) in verity_alloc_zero_digest()
1052 req = kmalloc(v->ahash_reqsize, GFP_KERNEL); in verity_alloc_zero_digest()
1057 zero_data = kzalloc(1 << v->data_dev_block_bits, GFP_KERNEL); in verity_alloc_zero_digest()
1062 r = verity_hash(v, req, zero_data, 1 << v->data_dev_block_bits, in verity_alloc_zero_digest()
1063 v->zero_digest, true); in verity_alloc_zero_digest()
1079 static int verity_parse_verity_mode(struct dm_verity *v, const char *arg_name) in verity_parse_verity_mode() argument
1081 if (v->mode) in verity_parse_verity_mode()
1085 v->mode = DM_VERITY_MODE_LOGGING; in verity_parse_verity_mode()
1087 v->mode = DM_VERITY_MODE_RESTART; in verity_parse_verity_mode()
1089 v->mode = DM_VERITY_MODE_PANIC; in verity_parse_verity_mode()
1094 static int verity_parse_opt_args(struct dm_arg_set *as, struct dm_verity *v, in verity_parse_opt_args() argument
1100 struct dm_target *ti = v->ti; in verity_parse_opt_args()
1121 r = verity_parse_verity_mode(v, arg_name); in verity_parse_opt_args()
1131 r = verity_alloc_zero_digest(v); in verity_parse_opt_args()
1141 r = verity_alloc_most_once(v); in verity_parse_opt_args()
1147 v->use_tasklet = true; in verity_parse_opt_args()
1154 r = verity_fec_parse_opt_args(as, v, &argc, arg_name); in verity_parse_opt_args()
1162 r = verity_verify_sig_parse_opt_args(as, v, in verity_parse_opt_args()
1203 struct dm_verity *v; in verity_ctr() local
1214 v = kzalloc(sizeof(struct dm_verity), GFP_KERNEL); in verity_ctr()
1215 if (!v) { in verity_ctr()
1219 ti->private = v; in verity_ctr()
1220 v->ti = ti; in verity_ctr()
1222 r = verity_fec_ctr_alloc(v); in verity_ctr()
1242 r = verity_parse_opt_args(&as, v, &verify_args, true); in verity_ctr()
1253 v->version = num; in verity_ctr()
1255 r = dm_get_device(ti, argv[1], FMODE_READ, &v->data_dev); in verity_ctr()
1261 r = dm_get_device(ti, argv[2], FMODE_READ, &v->hash_dev); in verity_ctr()
1269 num < bdev_logical_block_size(v->data_dev->bdev) || in verity_ctr()
1275 v->data_dev_block_bits = __ffs(num); in verity_ctr()
1279 num < bdev_logical_block_size(v->hash_dev->bdev) || in verity_ctr()
1285 v->hash_dev_block_bits = __ffs(num); in verity_ctr()
1288 (sector_t)(num_ll << (v->data_dev_block_bits - SECTOR_SHIFT)) in verity_ctr()
1289 >> (v->data_dev_block_bits - SECTOR_SHIFT) != num_ll) { in verity_ctr()
1294 v->data_blocks = num_ll; in verity_ctr()
1296 if (ti->len > (v->data_blocks << (v->data_dev_block_bits - SECTOR_SHIFT))) { in verity_ctr()
1303 (sector_t)(num_ll << (v->hash_dev_block_bits - SECTOR_SHIFT)) in verity_ctr()
1304 >> (v->hash_dev_block_bits - SECTOR_SHIFT) != num_ll) { in verity_ctr()
1309 v->hash_start = num_ll; in verity_ctr()
1311 v->alg_name = kstrdup(argv[7], GFP_KERNEL); in verity_ctr()
1312 if (!v->alg_name) { in verity_ctr()
1318 v->tfm = crypto_alloc_ahash(v->alg_name, 0, in verity_ctr()
1319 v->use_tasklet ? CRYPTO_ALG_ASYNC : 0); in verity_ctr()
1320 if (IS_ERR(v->tfm)) { in verity_ctr()
1322 r = PTR_ERR(v->tfm); in verity_ctr()
1323 v->tfm = NULL; in verity_ctr()
1332 DMINFO("%s using implementation \"%s\"", v->alg_name, in verity_ctr()
1333 crypto_hash_alg_common(v->tfm)->base.cra_driver_name); in verity_ctr()
1335 v->digest_size = crypto_ahash_digestsize(v->tfm); in verity_ctr()
1336 if ((1 << v->hash_dev_block_bits) < v->digest_size * 2) { in verity_ctr()
1341 v->ahash_reqsize = sizeof(struct ahash_request) + in verity_ctr()
1342 crypto_ahash_reqsize(v->tfm); in verity_ctr()
1344 v->root_digest = kmalloc(v->digest_size, GFP_KERNEL); in verity_ctr()
1345 if (!v->root_digest) { in verity_ctr()
1350 if (strlen(argv[8]) != v->digest_size * 2 || in verity_ctr()
1351 hex2bin(v->root_digest, argv[8], v->digest_size)) { in verity_ctr()
1359 v->salt_size = strlen(argv[9]) / 2; in verity_ctr()
1360 v->salt = kmalloc(v->salt_size, GFP_KERNEL); in verity_ctr()
1361 if (!v->salt) { in verity_ctr()
1366 if (strlen(argv[9]) != v->salt_size * 2 || in verity_ctr()
1367 hex2bin(v->salt, argv[9], v->salt_size)) { in verity_ctr()
1381 r = verity_parse_opt_args(&as, v, &verify_args, false); in verity_ctr()
1395 v->hash_per_block_bits = in verity_ctr()
1396 __fls((1 << v->hash_dev_block_bits) / v->digest_size); in verity_ctr()
1398 v->levels = 0; in verity_ctr()
1399 if (v->data_blocks) in verity_ctr()
1400 while (v->hash_per_block_bits * v->levels < 64 && in verity_ctr()
1401 (unsigned long long)(v->data_blocks - 1) >> in verity_ctr()
1402 (v->hash_per_block_bits * v->levels)) in verity_ctr()
1403 v->levels++; in verity_ctr()
1405 if (v->levels > DM_VERITY_MAX_LEVELS) { in verity_ctr()
1411 hash_position = v->hash_start; in verity_ctr()
1412 for (i = v->levels - 1; i >= 0; i--) { in verity_ctr()
1414 v->hash_level_block[i] = hash_position; in verity_ctr()
1415 s = (v->data_blocks + ((sector_t)1 << ((i + 1) * v->hash_per_block_bits)) - 1) in verity_ctr()
1416 >> ((i + 1) * v->hash_per_block_bits); in verity_ctr()
1424 v->hash_blocks = hash_position; in verity_ctr()
1426 r = mempool_init_page_pool(&v->recheck_pool, 1, 0); in verity_ctr()
1432 v->io = dm_io_client_create(); in verity_ctr()
1433 if (IS_ERR(v->io)) { in verity_ctr()
1434 r = PTR_ERR(v->io); in verity_ctr()
1435 v->io = NULL; in verity_ctr()
1440 v->bufio = dm_bufio_client_create(v->hash_dev->bdev, in verity_ctr()
1441 1 << v->hash_dev_block_bits, 1, sizeof(struct buffer_aux), in verity_ctr()
1443 v->use_tasklet ? DM_BUFIO_CLIENT_NO_SLEEP : 0); in verity_ctr()
1444 if (IS_ERR(v->bufio)) { in verity_ctr()
1446 r = PTR_ERR(v->bufio); in verity_ctr()
1447 v->bufio = NULL; in verity_ctr()
1451 if (dm_bufio_get_device_size(v->bufio) < v->hash_blocks) { in verity_ctr()
1466 v->verify_wq = alloc_workqueue("kverityd", WQ_MEM_RECLAIM | WQ_HIGHPRI, 0); in verity_ctr()
1467 if (!v->verify_wq) { in verity_ctr()
1474 v->ahash_reqsize + v->digest_size * 2; in verity_ctr()
1476 r = verity_fec_ctr(v); in verity_ctr()
1511 struct dm_verity *v = ti->private; in dm_verity_get_mode() local
1516 return v->mode; in dm_verity_get_mode()
1527 struct dm_verity *v = ti->private; in dm_verity_get_root_digest() local
1532 *root_digest = kmemdup(v->root_digest, v->digest_size, GFP_KERNEL); in dm_verity_get_root_digest()
1536 *digest_size = v->digest_size; in dm_verity_get_root_digest()