1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 *** To edit the content of this header, modify the corresponding 11 *** source file (e.g. under external/kernel-headers/original/) then 12 *** run bionic/libc/kernel/tools/update_all.py 13 *** 14 *** Any manual change here will be lost the next time this script will 15 *** be run. You've been warned! 16 *** 17 **************************************************************************** 18 ****************************************************************************/ 19 #ifndef _UAPI_LINUX_FSCRYPT_H 20 #define _UAPI_LINUX_FSCRYPT_H 21 #include <linux/types.h> 22 #define FSCRYPT_POLICY_FLAGS_PAD_4 0x00 23 #define FSCRYPT_POLICY_FLAGS_PAD_8 0x01 24 #define FSCRYPT_POLICY_FLAGS_PAD_16 0x02 25 #define FSCRYPT_POLICY_FLAGS_PAD_32 0x03 26 #define FSCRYPT_POLICY_FLAGS_PAD_MASK 0x03 27 #define FSCRYPT_POLICY_FLAG_DIRECT_KEY 0x04 28 #define FSCRYPT_POLICY_FLAG_IV_INO_LBLK_64 0x08 29 #define FSCRYPT_POLICY_FLAGS_VALID 0x0F 30 #define FSCRYPT_MODE_AES_256_XTS 1 31 #define FSCRYPT_MODE_AES_256_CTS 4 32 #define FSCRYPT_MODE_AES_128_CBC 5 33 #define FSCRYPT_MODE_AES_128_CTS 6 34 #define FSCRYPT_MODE_ADIANTUM 9 35 #define __FSCRYPT_MODE_MAX 9 36 #define FSCRYPT_POLICY_V1 0 37 #define FSCRYPT_KEY_DESCRIPTOR_SIZE 8 38 struct fscrypt_policy_v1 { 39 __u8 version; 40 __u8 contents_encryption_mode; 41 __u8 filenames_encryption_mode; 42 __u8 flags; 43 __u8 master_key_descriptor[FSCRYPT_KEY_DESCRIPTOR_SIZE]; 44 }; 45 #define fscrypt_policy fscrypt_policy_v1 46 #define FSCRYPT_KEY_DESC_PREFIX "fscrypt:" 47 #define FSCRYPT_KEY_DESC_PREFIX_SIZE 8 48 #define FSCRYPT_MAX_KEY_SIZE 64 49 struct fscrypt_key { 50 __u32 mode; 51 __u8 raw[FSCRYPT_MAX_KEY_SIZE]; 52 __u32 size; 53 }; 54 #define FSCRYPT_POLICY_V2 2 55 #define FSCRYPT_KEY_IDENTIFIER_SIZE 16 56 struct fscrypt_policy_v2 { 57 __u8 version; 58 __u8 contents_encryption_mode; 59 __u8 filenames_encryption_mode; 60 __u8 flags; 61 __u8 __reserved[4]; 62 __u8 master_key_identifier[FSCRYPT_KEY_IDENTIFIER_SIZE]; 63 }; 64 struct fscrypt_get_policy_ex_arg { 65 __u64 policy_size; 66 union { 67 __u8 version; 68 struct fscrypt_policy_v1 v1; 69 struct fscrypt_policy_v2 v2; 70 } policy; 71 }; 72 #define FSCRYPT_KEY_SPEC_TYPE_DESCRIPTOR 1 73 #define FSCRYPT_KEY_SPEC_TYPE_IDENTIFIER 2 74 struct fscrypt_key_specifier { 75 __u32 type; 76 __u32 __reserved; 77 union { 78 __u8 __reserved[32]; 79 __u8 descriptor[FSCRYPT_KEY_DESCRIPTOR_SIZE]; 80 __u8 identifier[FSCRYPT_KEY_IDENTIFIER_SIZE]; 81 } u; 82 }; 83 struct fscrypt_add_key_arg { 84 struct fscrypt_key_specifier key_spec; 85 __u32 raw_size; 86 __u32 __reserved[8]; 87 #define __FSCRYPT_ADD_KEY_FLAG_HW_WRAPPED 0x00000001 88 __u32 __flags; 89 __u8 raw[]; 90 }; 91 struct fscrypt_remove_key_arg { 92 struct fscrypt_key_specifier key_spec; 93 #define FSCRYPT_KEY_REMOVAL_STATUS_FLAG_FILES_BUSY 0x00000001 94 #define FSCRYPT_KEY_REMOVAL_STATUS_FLAG_OTHER_USERS 0x00000002 95 __u32 removal_status_flags; 96 __u32 __reserved[5]; 97 }; 98 struct fscrypt_get_key_status_arg { 99 struct fscrypt_key_specifier key_spec; 100 __u32 __reserved[6]; 101 #define FSCRYPT_KEY_STATUS_ABSENT 1 102 #define FSCRYPT_KEY_STATUS_PRESENT 2 103 #define FSCRYPT_KEY_STATUS_INCOMPLETELY_REMOVED 3 104 __u32 status; 105 #define FSCRYPT_KEY_STATUS_FLAG_ADDED_BY_SELF 0x00000001 106 __u32 status_flags; 107 __u32 user_count; 108 __u32 __out_reserved[13]; 109 }; 110 #define FS_IOC_SET_ENCRYPTION_POLICY _IOR('f', 19, struct fscrypt_policy) 111 #define FS_IOC_GET_ENCRYPTION_PWSALT _IOW('f', 20, __u8[16]) 112 #define FS_IOC_GET_ENCRYPTION_POLICY _IOW('f', 21, struct fscrypt_policy) 113 #define FS_IOC_GET_ENCRYPTION_POLICY_EX _IOWR('f', 22, __u8[9]) 114 #define FS_IOC_ADD_ENCRYPTION_KEY _IOWR('f', 23, struct fscrypt_add_key_arg) 115 #define FS_IOC_REMOVE_ENCRYPTION_KEY _IOWR('f', 24, struct fscrypt_remove_key_arg) 116 #define FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS _IOWR('f', 25, struct fscrypt_remove_key_arg) 117 #define FS_IOC_GET_ENCRYPTION_KEY_STATUS _IOWR('f', 26, struct fscrypt_get_key_status_arg) 118 #define FS_KEY_DESCRIPTOR_SIZE FSCRYPT_KEY_DESCRIPTOR_SIZE 119 #define FS_POLICY_FLAGS_PAD_4 FSCRYPT_POLICY_FLAGS_PAD_4 120 #define FS_POLICY_FLAGS_PAD_8 FSCRYPT_POLICY_FLAGS_PAD_8 121 #define FS_POLICY_FLAGS_PAD_16 FSCRYPT_POLICY_FLAGS_PAD_16 122 #define FS_POLICY_FLAGS_PAD_32 FSCRYPT_POLICY_FLAGS_PAD_32 123 #define FS_POLICY_FLAGS_PAD_MASK FSCRYPT_POLICY_FLAGS_PAD_MASK 124 #define FS_POLICY_FLAG_DIRECT_KEY FSCRYPT_POLICY_FLAG_DIRECT_KEY 125 #define FS_POLICY_FLAGS_VALID FSCRYPT_POLICY_FLAGS_VALID 126 #define FS_ENCRYPTION_MODE_INVALID 0 127 #define FS_ENCRYPTION_MODE_AES_256_XTS FSCRYPT_MODE_AES_256_XTS 128 #define FS_ENCRYPTION_MODE_AES_256_GCM 2 129 #define FS_ENCRYPTION_MODE_AES_256_CBC 3 130 #define FS_ENCRYPTION_MODE_AES_256_CTS FSCRYPT_MODE_AES_256_CTS 131 #define FS_ENCRYPTION_MODE_AES_128_CBC FSCRYPT_MODE_AES_128_CBC 132 #define FS_ENCRYPTION_MODE_AES_128_CTS FSCRYPT_MODE_AES_128_CTS 133 #define FS_ENCRYPTION_MODE_SPECK128_256_XTS 7 134 #define FS_ENCRYPTION_MODE_SPECK128_256_CTS 8 135 #define FS_ENCRYPTION_MODE_ADIANTUM FSCRYPT_MODE_ADIANTUM 136 #define FS_KEY_DESC_PREFIX FSCRYPT_KEY_DESC_PREFIX 137 #define FS_KEY_DESC_PREFIX_SIZE FSCRYPT_KEY_DESC_PREFIX_SIZE 138 #define FS_MAX_KEY_SIZE FSCRYPT_MAX_KEY_SIZE 139 #endif 140