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/ioctl.h> 22 #include <linux/types.h> 23 #define FSCRYPT_POLICY_FLAGS_PAD_4 0x00 24 #define FSCRYPT_POLICY_FLAGS_PAD_8 0x01 25 #define FSCRYPT_POLICY_FLAGS_PAD_16 0x02 26 #define FSCRYPT_POLICY_FLAGS_PAD_32 0x03 27 #define FSCRYPT_POLICY_FLAGS_PAD_MASK 0x03 28 #define FSCRYPT_POLICY_FLAG_DIRECT_KEY 0x04 29 #define FSCRYPT_POLICY_FLAG_IV_INO_LBLK_64 0x08 30 #define FSCRYPT_POLICY_FLAG_IV_INO_LBLK_32 0x10 31 #define FSCRYPT_MODE_AES_256_XTS 1 32 #define FSCRYPT_MODE_AES_256_CTS 4 33 #define FSCRYPT_MODE_AES_128_CBC 5 34 #define FSCRYPT_MODE_AES_128_CTS 6 35 #define FSCRYPT_MODE_ADIANTUM 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_KEY_DESC_PREFIX "fscrypt:" 46 #define FSCRYPT_KEY_DESC_PREFIX_SIZE 8 47 #define FSCRYPT_MAX_KEY_SIZE 64 48 struct fscrypt_key { 49 __u32 mode; 50 __u8 raw[FSCRYPT_MAX_KEY_SIZE]; 51 __u32 size; 52 }; 53 #define FSCRYPT_POLICY_V2 2 54 #define FSCRYPT_KEY_IDENTIFIER_SIZE 16 55 struct fscrypt_policy_v2 { 56 __u8 version; 57 __u8 contents_encryption_mode; 58 __u8 filenames_encryption_mode; 59 __u8 flags; 60 __u8 __reserved[4]; 61 __u8 master_key_identifier[FSCRYPT_KEY_IDENTIFIER_SIZE]; 62 }; 63 struct fscrypt_get_policy_ex_arg { 64 __u64 policy_size; 65 union { 66 __u8 version; 67 struct fscrypt_policy_v1 v1; 68 struct fscrypt_policy_v2 v2; 69 } policy; 70 }; 71 #define FSCRYPT_KEY_SPEC_TYPE_DESCRIPTOR 1 72 #define FSCRYPT_KEY_SPEC_TYPE_IDENTIFIER 2 73 struct fscrypt_key_specifier { 74 __u32 type; 75 __u32 __reserved; 76 union { 77 __u8 __reserved[32]; 78 __u8 descriptor[FSCRYPT_KEY_DESCRIPTOR_SIZE]; 79 __u8 identifier[FSCRYPT_KEY_IDENTIFIER_SIZE]; 80 } u; 81 }; 82 struct fscrypt_provisioning_key_payload { 83 __u32 type; 84 __u32 __reserved; 85 __u8 raw[]; 86 }; 87 struct fscrypt_add_key_arg { 88 struct fscrypt_key_specifier key_spec; 89 __u32 raw_size; 90 __u32 key_id; 91 __u32 __reserved[7]; 92 #define __FSCRYPT_ADD_KEY_FLAG_HW_WRAPPED 0x00000001 93 __u32 __flags; 94 __u8 raw[]; 95 }; 96 struct fscrypt_remove_key_arg { 97 struct fscrypt_key_specifier key_spec; 98 #define FSCRYPT_KEY_REMOVAL_STATUS_FLAG_FILES_BUSY 0x00000001 99 #define FSCRYPT_KEY_REMOVAL_STATUS_FLAG_OTHER_USERS 0x00000002 100 __u32 removal_status_flags; 101 __u32 __reserved[5]; 102 }; 103 struct fscrypt_get_key_status_arg { 104 struct fscrypt_key_specifier key_spec; 105 __u32 __reserved[6]; 106 #define FSCRYPT_KEY_STATUS_ABSENT 1 107 #define FSCRYPT_KEY_STATUS_PRESENT 2 108 #define FSCRYPT_KEY_STATUS_INCOMPLETELY_REMOVED 3 109 __u32 status; 110 #define FSCRYPT_KEY_STATUS_FLAG_ADDED_BY_SELF 0x00000001 111 __u32 status_flags; 112 __u32 user_count; 113 __u32 __out_reserved[13]; 114 }; 115 #define FS_IOC_SET_ENCRYPTION_POLICY _IOR('f', 19, struct fscrypt_policy_v1) 116 #define FS_IOC_GET_ENCRYPTION_PWSALT _IOW('f', 20, __u8[16]) 117 #define FS_IOC_GET_ENCRYPTION_POLICY _IOW('f', 21, struct fscrypt_policy_v1) 118 #define FS_IOC_GET_ENCRYPTION_POLICY_EX _IOWR('f', 22, __u8[9]) 119 #define FS_IOC_ADD_ENCRYPTION_KEY _IOWR('f', 23, struct fscrypt_add_key_arg) 120 #define FS_IOC_REMOVE_ENCRYPTION_KEY _IOWR('f', 24, struct fscrypt_remove_key_arg) 121 #define FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS _IOWR('f', 25, struct fscrypt_remove_key_arg) 122 #define FS_IOC_GET_ENCRYPTION_KEY_STATUS _IOWR('f', 26, struct fscrypt_get_key_status_arg) 123 #define FS_IOC_GET_ENCRYPTION_NONCE _IOR('f', 27, __u8[16]) 124 #define fscrypt_policy fscrypt_policy_v1 125 #define FS_KEY_DESCRIPTOR_SIZE FSCRYPT_KEY_DESCRIPTOR_SIZE 126 #define FS_POLICY_FLAGS_PAD_4 FSCRYPT_POLICY_FLAGS_PAD_4 127 #define FS_POLICY_FLAGS_PAD_8 FSCRYPT_POLICY_FLAGS_PAD_8 128 #define FS_POLICY_FLAGS_PAD_16 FSCRYPT_POLICY_FLAGS_PAD_16 129 #define FS_POLICY_FLAGS_PAD_32 FSCRYPT_POLICY_FLAGS_PAD_32 130 #define FS_POLICY_FLAGS_PAD_MASK FSCRYPT_POLICY_FLAGS_PAD_MASK 131 #define FS_POLICY_FLAG_DIRECT_KEY FSCRYPT_POLICY_FLAG_DIRECT_KEY 132 #define FS_POLICY_FLAGS_VALID 0x07 133 #define FS_ENCRYPTION_MODE_INVALID 0 134 #define FS_ENCRYPTION_MODE_AES_256_XTS FSCRYPT_MODE_AES_256_XTS 135 #define FS_ENCRYPTION_MODE_AES_256_GCM 2 136 #define FS_ENCRYPTION_MODE_AES_256_CBC 3 137 #define FS_ENCRYPTION_MODE_AES_256_CTS FSCRYPT_MODE_AES_256_CTS 138 #define FS_ENCRYPTION_MODE_AES_128_CBC FSCRYPT_MODE_AES_128_CBC 139 #define FS_ENCRYPTION_MODE_AES_128_CTS FSCRYPT_MODE_AES_128_CTS 140 #define FS_ENCRYPTION_MODE_SPECK128_256_XTS 7 141 #define FS_ENCRYPTION_MODE_SPECK128_256_CTS 8 142 #define FS_ENCRYPTION_MODE_ADIANTUM FSCRYPT_MODE_ADIANTUM 143 #define FS_KEY_DESC_PREFIX FSCRYPT_KEY_DESC_PREFIX 144 #define FS_KEY_DESC_PREFIX_SIZE FSCRYPT_KEY_DESC_PREFIX_SIZE 145 #define FS_MAX_KEY_SIZE FSCRYPT_MAX_KEY_SIZE 146 #endif 147