blob: c5405060b5b12de95ae9dd2ca935bc9fe1993810 [file] [log] [blame]
/* Copyright (c) 2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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.
*/
#ifndef _FSCRYPT_ICE_H
#define _FSCRYPT_ICE_H
#include <linux/blkdev.h>
#include "fscrypt_private.h"
#if IS_ENABLED(CONFIG_FS_ENCRYPTION)
static inline bool fscrypt_should_be_processed_by_ice(const struct inode *inode)
{
if (!inode->i_sb->s_cop)
return 0;
if (!inode->i_sb->s_cop->is_encrypted((struct inode *)inode))
return 0;
return fscrypt_using_hardware_encryption(inode);
}
static inline int fscrypt_is_ice_capable(const struct super_block *sb)
{
return blk_queue_inlinecrypt(bdev_get_queue(sb->s_bdev));
}
int fscrypt_is_aes_xts_cipher(const struct inode *inode);
char *fscrypt_get_ice_encryption_key(const struct inode *inode);
char *fscrypt_get_ice_encryption_salt(const struct inode *inode);
bool fscrypt_is_ice_encryption_info_equal(const struct inode *inode1,
const struct inode *inode2);
static inline size_t fscrypt_get_ice_encryption_key_size(
const struct inode *inode)
{
return FS_AES_256_XTS_KEY_SIZE / 2;
}
static inline size_t fscrypt_get_ice_encryption_salt_size(
const struct inode *inode)
{
return FS_AES_256_XTS_KEY_SIZE / 2;
}
#else
static inline bool fscrypt_should_be_processed_by_ice(const struct inode *inode)
{
return 0;
}
static inline int fscrypt_is_ice_capable(const struct super_block *sb)
{
return 0;
}
static inline char *fscrypt_get_ice_encryption_key(const struct inode *inode)
{
return NULL;
}
static inline char *fscrypt_get_ice_encryption_salt(const struct inode *inode)
{
return NULL;
}
static inline size_t fscrypt_get_ice_encryption_key_size(
const struct inode *inode)
{
return 0;
}
static inline size_t fscrypt_get_ice_encryption_salt_size(
const struct inode *inode)
{
return 0;
}
static inline int fscrypt_is_xts_cipher(const struct inode *inode)
{
return 0;
}
static inline bool fscrypt_is_ice_encryption_info_equal(
const struct inode *inode1,
const struct inode *inode2)
{
return 0;
}
static inline int fscrypt_is_aes_xts_cipher(const struct inode *inode)
{
return 0;
}
#endif
#endif /* _FSCRYPT_ICE_H */