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_FSVERITY_H 20 #define _UAPI_LINUX_FSVERITY_H 21 #include <linux/ioctl.h> 22 #include <linux/types.h> 23 #define FS_VERITY_HASH_ALG_SHA256 1 24 #define FS_VERITY_HASH_ALG_SHA512 2 25 struct fsverity_enable_arg { 26 __u32 version; 27 __u32 hash_algorithm; 28 __u32 block_size; 29 __u32 salt_size; 30 __u64 salt_ptr; 31 __u32 sig_size; 32 __u32 __reserved1; 33 __u64 sig_ptr; 34 __u64 __reserved2[11]; 35 }; 36 struct fsverity_digest { 37 __u16 digest_algorithm; 38 __u16 digest_size; 39 __u8 digest[]; 40 }; 41 struct fsverity_descriptor { 42 __u8 version; 43 __u8 hash_algorithm; 44 __u8 log_blocksize; 45 __u8 salt_size; 46 __le32 __reserved_0x04; 47 __le64 data_size; 48 __u8 root_hash[64]; 49 __u8 salt[32]; 50 __u8 __reserved[144]; 51 }; 52 struct fsverity_formatted_digest { 53 char magic[8]; 54 __le16 digest_algorithm; 55 __le16 digest_size; 56 __u8 digest[]; 57 }; 58 #define FS_VERITY_METADATA_TYPE_MERKLE_TREE 1 59 #define FS_VERITY_METADATA_TYPE_DESCRIPTOR 2 60 #define FS_VERITY_METADATA_TYPE_SIGNATURE 3 61 struct fsverity_read_metadata_arg { 62 __u64 metadata_type; 63 __u64 offset; 64 __u64 length; 65 __u64 buf_ptr; 66 __u64 __reserved; 67 }; 68 #define FS_IOC_ENABLE_VERITY _IOW('f', 133, struct fsverity_enable_arg) 69 #define FS_IOC_MEASURE_VERITY _IOWR('f', 134, struct fsverity_digest) 70 #define FS_IOC_READ_VERITY_METADATA _IOWR('f', 135, struct fsverity_read_metadata_arg) 71 #endif 72