62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
||
|
|
/*
|
||
|
|
* fscrypt user API
|
||
|
|
*
|
||
|
|
* These ioctls can be used on filesystems that support fscrypt. See the
|
||
|
|
* "User API" section of Documentation/filesystems/fscrypt.rst.
|
||
|
|
*/
|
||
|
|
#ifndef _UAPI_LINUX_FSCRYPT_H
|
||
|
|
#define _UAPI_LINUX_FSCRYPT_H
|
||
|
|
|
||
|
|
#include <linux/types.h>
|
||
|
|
|
||
|
|
#define FS_KEY_DESCRIPTOR_SIZE 8
|
||
|
|
|
||
|
|
/* Encryption policy flags */
|
||
|
|
#define FS_POLICY_FLAGS_PAD_4 0x00
|
||
|
|
#define FS_POLICY_FLAGS_PAD_8 0x01
|
||
|
|
#define FS_POLICY_FLAGS_PAD_16 0x02
|
||
|
|
#define FS_POLICY_FLAGS_PAD_32 0x03
|
||
|
|
#define FS_POLICY_FLAGS_PAD_MASK 0x03
|
||
|
|
#define FS_POLICY_FLAG_DIRECT_KEY 0x04 /* use master key directly */
|
||
|
|
#define FS_POLICY_FLAGS_VALID 0x07
|
||
|
|
|
||
|
|
/* Encryption algorithms */
|
||
|
|
#define FS_ENCRYPTION_MODE_INVALID 0
|
||
|
|
#define FS_ENCRYPTION_MODE_AES_256_XTS 1
|
||
|
|
#define FS_ENCRYPTION_MODE_AES_256_GCM 2
|
||
|
|
#define FS_ENCRYPTION_MODE_AES_256_CBC 3
|
||
|
|
#define FS_ENCRYPTION_MODE_AES_256_CTS 4
|
||
|
|
#define FS_ENCRYPTION_MODE_AES_128_CBC 5
|
||
|
|
#define FS_ENCRYPTION_MODE_AES_128_CTS 6
|
||
|
|
#define FS_ENCRYPTION_MODE_SPECK128_256_XTS 7 /* Removed, do not use. */
|
||
|
|
#define FS_ENCRYPTION_MODE_SPECK128_256_CTS 8 /* Removed, do not use. */
|
||
|
|
#define FS_ENCRYPTION_MODE_ADIANTUM 9
|
||
|
|
|
||
|
|
struct fscrypt_policy {
|
||
|
|
__u8 version;
|
||
|
|
__u8 contents_encryption_mode;
|
||
|
|
__u8 filenames_encryption_mode;
|
||
|
|
__u8 flags;
|
||
|
|
__u8 master_key_descriptor[FS_KEY_DESCRIPTOR_SIZE];
|
||
|
|
};
|
||
|
|
|
||
|
|
#define FS_IOC_SET_ENCRYPTION_POLICY _IOR('f', 19, struct fscrypt_policy)
|
||
|
|
#define FS_IOC_GET_ENCRYPTION_PWSALT _IOW('f', 20, __u8[16])
|
||
|
|
#define FS_IOC_GET_ENCRYPTION_POLICY _IOW('f', 21, struct fscrypt_policy)
|
||
|
|
|
||
|
|
/* Parameters for passing an encryption key into the kernel keyring */
|
||
|
|
#define FS_KEY_DESC_PREFIX "fscrypt:"
|
||
|
|
#define FS_KEY_DESC_PREFIX_SIZE 8
|
||
|
|
|
||
|
|
/* Structure that userspace passes to the kernel keyring */
|
||
|
|
#define FS_MAX_KEY_SIZE 64
|
||
|
|
|
||
|
|
struct fscrypt_key {
|
||
|
|
__u32 mode;
|
||
|
|
__u8 raw[FS_MAX_KEY_SIZE];
|
||
|
|
__u32 size;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* _UAPI_LINUX_FSCRYPT_H */
|