DM_VERITY_BLOCK_TYPE_METADATA
};
+struct dm_verity_fec;
+
struct dm_verity {
struct dm_dev *data_dev;
struct dm_dev *hash_dev;
struct crypto_shash *tfm;
u8 *root_digest; /* digest of the root block */
u8 *salt; /* salt: its size is salt_size */
+ u8 *zero_digest; /* digest for a zero block */
unsigned salt_size;
sector_t data_start; /* data offset in 512-byte sectors */
sector_t hash_start; /* hash start in blocks */
/* starting blocks for each tree level. 0 is the lowest level. */
sector_t hash_level_block[DM_VERITY_MAX_LEVELS];
+
+ struct dm_verity_fec *fec; /* forward error correction */
};
struct dm_verity_io {
return (u8 *)(io + 1) + v->shash_descsize + v->digest_size;
}
+static inline u8 *verity_io_digest_end(struct dm_verity *v,
+ struct dm_verity_io *io)
+{
+ return verity_io_want_digest(v, io) + v->digest_size;
+}
+
+extern int verity_for_bv_block(struct dm_verity *v, struct dm_verity_io *io,
+ struct bvec_iter *iter,
+ int (*process)(struct dm_verity *v,
+ struct dm_verity_io *io,
+ u8 *data, size_t len));
+
extern int verity_hash(struct dm_verity *v, struct shash_desc *desc,
const u8 *data, size_t len, u8 *digest);
extern int verity_hash_for_block(struct dm_verity *v, struct dm_verity_io *io,
- sector_t block, u8 *digest);
-
+ sector_t block, u8 *digest, bool *is_zero);
+
+extern void verity_status(struct dm_target *ti, status_type_t type,
+ unsigned status_flags, char *result, unsigned maxlen);
+extern int verity_prepare_ioctl(struct dm_target *ti,
+ struct block_device **bdev, fmode_t *mode);
+extern int verity_iterate_devices(struct dm_target *ti,
+ iterate_devices_callout_fn fn, void *data);
+extern void verity_io_hints(struct dm_target *ti, struct queue_limits *limits);
+extern void verity_dtr(struct dm_target *ti);
+extern int verity_ctr(struct dm_target *ti, unsigned argc, char **argv);
+extern int verity_map(struct dm_target *ti, struct bio *bio);
#endif /* DM_VERITY_H */