-void set_error_va(const char *fmt, va_list va);
-void set_error(const char *fmt, ...);
-const char *get_error(void);
-void *safe_alloc(size_t size);
-void safe_free(void *data);
-void *safe_realloc(void *data, size_t size);
-char *safe_strdup(const char *s);
-void set_debug_level(int level);
-
-int init_crypto(void);
-struct hash_backend *get_hash_backend(const char *name);
-void put_hash_backend(struct hash_backend *backend);
-int hash(const char *backend_name, const char *hash_name,
- char *result, size_t size,
- const char *passphrase, size_t sizep);
-
-void hexprint(char *d, int n);
-
-/* Device mapper backend */
-const char *dm_get_dir(void);
-int dm_init(struct crypt_device *context, int check_kernel);
-void dm_exit(void);
-int dm_remove_device(const char *name, int force, uint64_t size);
-int dm_status_device(const char *name);
-int dm_query_device(const char *name,
- char **device,
- uint64_t *size,
- uint64_t *skip,
- uint64_t *offset,
- char **cipher,
- int *key_size,
- char **key,
- int *read_only,
- int *suspended,
- char **uuid);
-int dm_create_device(const char *name, const char *device, const char *cipher,
- const char *type, const char *uuid,
- uint64_t size, uint64_t skip, uint64_t offset,
- size_t key_size, const char *key,
- int read_only, int reload);
-int dm_suspend_and_wipe_key(const char *name);
-int dm_resume_and_reinstate_key(const char *name,
- size_t key_size,
- const char *key);