47 lines
1.5 KiB
C
Executable File
47 lines
1.5 KiB
C
Executable File
/*
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* Copyright (C) 2018 Samsung Electronics Co., Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Functions related to blk-crypt(for inline encryption) handling
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*
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* NOTE :
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* blk-crypt implementation depends on a inline encryption hardware.
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*
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*/
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#ifndef _BLK_CRYPT_H
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#define _BLK_CRYPT_H
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#include <linux/types.h>
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struct bio;
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struct block_device;
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typedef void blk_crypt_t;
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#define BLK_CRYPT_MODE_INLINE_PRIVATE (127)
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struct blk_crypt_algorithm_cbs {
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void *(*alloc)(void);
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void (*free)(void *data);
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unsigned char *(*get_key)(void *);
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int (*set_key)(void *, const char *, int, void *);
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};
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extern bool blk_crypt_encrypted(const struct bio *bio);
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extern bool blk_crypt_mergeable(const struct bio *a, const struct bio *b);
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extern void *blk_crypt_alg_register(struct block_device *, const char *, const unsigned int,
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const struct blk_crypt_algorithm_cbs *);
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extern int blk_crypt_alg_unregister(void *);
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extern blk_crypt_t *blk_crypt_get_context(struct block_device *, const char *);
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extern void blk_crypt_put_context(blk_crypt_t *);
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extern void *blk_crypt_get_data(blk_crypt_t *);
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extern unsigned char *blk_crypt_get_key(blk_crypt_t *);
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extern int blk_crypt_set_key(blk_crypt_t *, u8 *raw_key, u32 keysize, void *priv);
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#endif /* _BLK_CRYPT_H */
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