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trezor-firmware/storage/norcow.h
2024-02-20 09:37:28 +01:00

88 lines
2.4 KiB
C

/*
* This file is part of the Trezor project, https://trezor.io/
*
* Copyright (c) SatoshiLabs
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __NORCOW_H__
#define __NORCOW_H__
#include <stdint.h>
#include "secbool.h"
/*
* Storage parameters
*/
#include "norcow_config.h"
/*
* Initialize storage
*/
void norcow_init(uint32_t *norcow_version);
/*
* Wipe the storage
*/
void norcow_wipe(void);
/*
* Looks for the given key, returns status of the operation
*/
secbool norcow_get(uint16_t key, const void **val, uint16_t *len);
/*
* Reads the next entry in the storage starting at offset. Returns secfalse if
* there is none.
*/
secbool norcow_get_next(uint32_t *offset, uint16_t *key, const void **val,
uint16_t *len);
/*
* Sets the given key, returns status of the operation. If NULL is passed
* as val, then norcow_set allocates a new key of size len. The value should
* then be written using norcow_update_bytes().
*/
secbool norcow_set(uint16_t key, const void *val, uint16_t len);
secbool norcow_set_ex(uint16_t key, const void *val, uint16_t len,
secbool *found);
/*
* Deletes the given key, returns status of the operation.
*/
secbool norcow_delete(uint16_t key);
secbool norcow_set_counter(uint16_t key, uint32_t count);
secbool norcow_next_counter(uint16_t key, uint32_t *count);
/*
* Update the value of the given key, data are written sequentially from start
* Data are guaranteed to be stored on flash once the total item len is reached.
*
* It is only allowed to update bytes of pristine items, i.e. items that were
* not yet set after allocating them with norcow_set(key, NULL, len).
*/
secbool norcow_update_bytes(const uint16_t key, const uint8_t *data,
const uint16_t len);
/*
* Complete storage version upgrade
*/
secbool norcow_upgrade_finish(void);
#endif