+struct luks2_reenc_context;
+
+struct volume_key {
+ int id;
+ size_t keylength;
+ const char *key_description;
+ struct volume_key *next;
+ char key[];
+};
+
+struct volume_key *crypt_alloc_volume_key(size_t keylength, const char *key);
+struct volume_key *crypt_generate_volume_key(struct crypt_device *cd, size_t keylength);
+void crypt_free_volume_key(struct volume_key *vk);
+int crypt_volume_key_set_description(struct volume_key *key, const char *key_description);
+void crypt_volume_key_set_id(struct volume_key *vk, int id);
+int crypt_volume_key_get_id(const struct volume_key *vk);
+void crypt_volume_key_add_next(struct volume_key **vks, struct volume_key *vk);
+struct volume_key *crypt_volume_key_next(struct volume_key *vk);
+struct volume_key *crypt_volume_key_by_id(struct volume_key *vk, int id);
+
+struct crypt_pbkdf_type *crypt_get_pbkdf(struct crypt_device *cd);
+int init_pbkdf_type(struct crypt_device *cd,
+ const struct crypt_pbkdf_type *pbkdf,
+ const char *dev_type);
+int verify_pbkdf_params(struct crypt_device *cd,
+ const struct crypt_pbkdf_type *pbkdf);
+int crypt_benchmark_pbkdf_internal(struct crypt_device *cd,
+ struct crypt_pbkdf_type *pbkdf,
+ size_t volume_key_size);
+const char *crypt_get_cipher_spec(struct crypt_device *cd);
+
+/* Device backend */
+struct device;
+int device_alloc(struct crypt_device *cd, struct device **device, const char *path);
+int device_alloc_no_check(struct device **device, const char *path);
+void device_close(struct crypt_device *cd, struct device *device);
+void device_free(struct crypt_device *cd, struct device *device);
+const char *device_path(const struct device *device);
+const char *device_dm_name(const struct device *device);
+const char *device_block_path(const struct device *device);
+void device_topology_alignment(struct crypt_device *cd,
+ struct device *device,
+ unsigned long *required_alignment, /* bytes */
+ unsigned long *alignment_offset, /* bytes */
+ unsigned long default_alignment);
+size_t device_block_size(struct crypt_device *cd, struct device *device);
+int device_read_ahead(struct device *device, uint32_t *read_ahead);
+int device_size(struct device *device, uint64_t *size);
+int device_open(struct crypt_device *cd, struct device *device, int flags);
+int device_open_excl(struct crypt_device *cd, struct device *device, int flags);
+void device_release_excl(struct crypt_device *cd, struct device *device);
+void device_disable_direct_io(struct device *device);
+int device_is_identical(struct device *device1, struct device *device2);
+int device_is_rotational(struct device *device);
+size_t device_alignment(struct device *device);
+int device_direct_io(const struct device *device);
+int device_fallocate(struct device *device, uint64_t size);
+void device_sync(struct crypt_device *cd, struct device *device);
+int device_check_size(struct crypt_device *cd,
+ struct device *device,
+ uint64_t req_offset, int falloc);
+
+int device_open_locked(struct crypt_device *cd, struct device *device, int flags);
+int device_read_lock(struct crypt_device *cd, struct device *device);
+int device_write_lock(struct crypt_device *cd, struct device *device);
+void device_read_unlock(struct crypt_device *cd, struct device *device);
+void device_write_unlock(struct crypt_device *cd, struct device *device);
+bool device_is_locked(struct device *device);
+
+enum devcheck { DEV_OK = 0, DEV_EXCL = 1 };
+int device_check_access(struct crypt_device *cd,
+ struct device *device,
+ enum devcheck device_check);
+int device_block_adjust(struct crypt_device *cd,
+ struct device *device,
+ enum devcheck device_check,
+ uint64_t device_offset,
+ uint64_t *size,
+ uint32_t *flags);
+size_t size_round_up(size_t size, size_t block);
+
+int create_or_reload_device(struct crypt_device *cd, const char *name,
+ const char *type, struct crypt_dm_active_device *dmd);
+
+int create_or_reload_device_with_integrity(struct crypt_device *cd, const char *name,
+ const char *type, struct crypt_dm_active_device *dmd,
+ struct crypt_dm_active_device *dmdi);
+
+/* Receive backend devices from context helpers */
+struct device *crypt_metadata_device(struct crypt_device *cd);
+struct device *crypt_data_device(struct crypt_device *cd);
+
+int crypt_confirm(struct crypt_device *cd, const char *msg);
+
+char *crypt_lookup_dev(const char *dev_id);
+int crypt_dev_is_rotational(int major, int minor);
+int crypt_dev_is_partition(const char *dev_path);
+char *crypt_get_partition_device(const char *dev_path, uint64_t offset, uint64_t size);
+char *crypt_get_base_device(const char *dev_path);
+uint64_t crypt_dev_partition_offset(const char *dev_path);
+int lookup_by_disk_id(const char *dm_uuid);
+int lookup_by_sysfs_uuid_field(const char *dm_uuid, size_t max_len);
+int crypt_uuid_cmp(const char *dm_uuid, const char *hdr_uuid);
+
+size_t crypt_getpagesize(void);
+unsigned crypt_cpusonline(void);
+uint64_t crypt_getphysmemory_kb(void);
+
+int init_crypto(struct crypt_device *ctx);
+
+void logger(struct crypt_device *cd, int level, const char *file, int line, const char *format, ...) __attribute__ ((format (printf, 5, 6)));
+#define log_dbg(c, x...) logger(c, CRYPT_LOG_DEBUG, __FILE__, __LINE__, x)
+#define log_std(c, x...) logger(c, CRYPT_LOG_NORMAL, __FILE__, __LINE__, x)
+#define log_verbose(c, x...) logger(c, CRYPT_LOG_VERBOSE, __FILE__, __LINE__, x)
+#define log_err(c, x...) logger(c, CRYPT_LOG_ERROR, __FILE__, __LINE__, x)
+
+int crypt_get_debug_level(void);
+
+int crypt_memlock_inc(struct crypt_device *ctx);
+int crypt_memlock_dec(struct crypt_device *ctx);
+
+int crypt_metadata_locking_enabled(void);
+
+int crypt_random_init(struct crypt_device *ctx);
+int crypt_random_get(struct crypt_device *ctx, char *buf, size_t len, int quality);
+void crypt_random_exit(void);
+int crypt_random_default_key_rng(void);
+
+int crypt_plain_hash(struct crypt_device *cd,
+ const char *hash_name,
+ char *key, size_t key_size,
+ const char *passphrase, size_t passphrase_size);
+int PLAIN_activate(struct crypt_device *cd,
+ const char *name,
+ struct volume_key *vk,
+ uint64_t size,
+ uint32_t flags);
+
+void *crypt_get_hdr(struct crypt_device *cd, const char *type);
+void crypt_set_reenc_context(struct crypt_device *cd, struct luks2_reenc_context *rh);
+struct luks2_reenc_context *crypt_get_reenc_context(struct crypt_device *cd);
+
+int onlyLUKS2(struct crypt_device *cd);
+int onlyLUKS2mask(struct crypt_device *cd, uint32_t mask);
+
+int crypt_wipe_device(struct crypt_device *cd,
+ struct device *device,
+ crypt_wipe_pattern pattern,
+ uint64_t offset,
+ uint64_t length,
+ size_t wipe_block_size,
+ int (*progress)(uint64_t size, uint64_t offset, void *usrptr),
+ void *usrptr);
+
+/* Internal integrity helpers */
+const char *crypt_get_integrity(struct crypt_device *cd);
+int crypt_get_integrity_key_size(struct crypt_device *cd);
+int crypt_get_integrity_tag_size(struct crypt_device *cd);
+
+int crypt_key_in_keyring(struct crypt_device *cd);
+void crypt_set_key_in_keyring(struct crypt_device *cd, unsigned key_in_keyring);
+int crypt_volume_key_load_in_keyring(struct crypt_device *cd, struct volume_key *vk);
+int crypt_use_keyring_for_vk(struct crypt_device *cd);
+void crypt_drop_keyring_key_by_description(struct crypt_device *cd, const char *key_description, key_type_t ktype);
+void crypt_drop_keyring_key(struct crypt_device *cd, struct volume_key *vks);
+
+static inline uint64_t version(uint16_t major, uint16_t minor, uint16_t patch, uint16_t release)
+{
+ return (uint64_t)release | ((uint64_t)patch << 16) | ((uint64_t)minor << 32) | ((uint64_t)major << 48);
+}
+
+int kernel_version(uint64_t *kversion);
+
+int crypt_serialize_lock(struct crypt_device *cd);
+void crypt_serialize_unlock(struct crypt_device *cd);