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/* Copyright (c) 2016, 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 _EXT4_ICE_H
#define _EXT4_ICE_H
#include "ext4.h"
#include "ext4_crypto.h"
#ifdef CONFIG_EXT4_FS_ICE_ENCRYPTION
static inline int ext4_should_be_processed_by_ice(const struct inode *inode)
{
if (!ext4_encrypted_inode((struct inode *)inode))
return 0;
return ext4_using_hardware_encryption((struct inode *)inode);
}
static inline int ext4_is_ice_enabled(void)
{
return 1;
}
int ext4_is_aes_xts_cipher(const struct inode *inode);
char *ext4_get_ice_encryption_key(const struct inode *inode);
char *ext4_get_ice_encryption_salt(const struct inode *inode);
int ext4_is_ice_encryption_info_equal(const struct inode *inode1,
const struct inode *inode2);
static inline size_t ext4_get_ice_encryption_key_size(
const struct inode *inode)
{
return EXT4_AES_256_XTS_KEY_SIZE / 2;
}
static inline size_t ext4_get_ice_encryption_salt_size(
const struct inode *inode)
{
return EXT4_AES_256_XTS_KEY_SIZE / 2;
}
#else
static inline int ext4_should_be_processed_by_ice(const struct inode *inode)
{
return 0;
}
static inline int ext4_is_ice_enabled(void)
{
return 0;
}
static inline char *ext4_get_ice_encryption_key(const struct inode *inode)
{
return NULL;
}
static inline char *ext4_get_ice_encryption_salt(const struct inode *inode)
{
return NULL;
}
static inline size_t ext4_get_ice_encryption_key_size(
const struct inode *inode)
{
return 0;
}
static inline size_t ext4_get_ice_encryption_salt_size(
const struct inode *inode)
{
return 0;
}
static inline int ext4_is_xts_cipher(const struct inode *inode)
{
return 0;
}
static inline int ext4_is_ice_encryption_info_equal(
const struct inode *inode1,
const struct inode *inode2)
{
return 0;
}
static inline int ext4_is_aes_xts_cipher(const struct inode *inode)
{
return 0;
}
#endif
#endif /* _EXT4_ICE_H */
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