| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Copyright (c) 2018-2019, The Linux Foundation. All rights reserved. |
| */ |
| |
| #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 false; |
| if (!inode->i_sb->s_cop->is_encrypted((struct inode *)inode)) |
| return false; |
| |
| 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 false; |
| } |
| |
| static inline int fscrypt_is_ice_capable(const struct super_block *sb) |
| { |
| return false; |
| } |
| |
| 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 false; |
| } |
| |
| static inline int fscrypt_is_aes_xts_cipher(const struct inode *inode) |
| { |
| return 0; |
| } |
| |
| #endif |
| |
| #endif /* _FSCRYPT_ICE_H */ |