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/****************************************************************************
****************************************************************************
***
*** This header was automatically generated from a Linux kernel header
*** of the same name, to make information necessary for userspace to
*** call into the kernel available to libc. It contains only constants,
*** structures, and macros generated from the original header, and thus,
*** contains no copyrightable information.
***
*** To edit the content of this header, modify the corresponding
*** source file (e.g. under external/kernel-headers/original/) then
*** run bionic/libc/kernel/tools/update_all.py
***
*** Any manual change here will be lost the next time this script will
*** be run. You've been warned!
***
****************************************************************************
****************************************************************************/
#ifndef _UAPI_LINUX_INCREMENTALFS_H
#define _UAPI_LINUX_INCREMENTALFS_H
#include <linux/limits.h>
#include <linux/ioctl.h>
#include <linux/types.h>
#include <linux/xattr.h>
#define INCFS_NAME "incremental-fs"
#define INCFS_MAGIC_NUMBER (0x5346434e49ul & ULONG_MAX)
#define INCFS_DATA_FILE_BLOCK_SIZE 4096
#define INCFS_HEADER_VER 1
#define INCFS_MAX_HASH_SIZE 32
#define INCFS_MAX_FILE_ATTR_SIZE 512
#define INCFS_INDEX_NAME ".index"
#define INCFS_INCOMPLETE_NAME ".incomplete"
#define INCFS_PENDING_READS_FILENAME ".pending_reads"
#define INCFS_LOG_FILENAME ".log"
#define INCFS_BLOCKS_WRITTEN_FILENAME ".blocks_written"
#define INCFS_XATTR_ID_NAME (XATTR_USER_PREFIX "incfs.id")
#define INCFS_XATTR_SIZE_NAME (XATTR_USER_PREFIX "incfs.size")
#define INCFS_XATTR_METADATA_NAME (XATTR_USER_PREFIX "incfs.metadata")
#define INCFS_XATTR_VERITY_NAME (XATTR_USER_PREFIX "incfs.verity")
#define INCFS_MAX_SIGNATURE_SIZE 8096
#define INCFS_SIGNATURE_VERSION 2
#define INCFS_SIGNATURE_SECTIONS 2
#define INCFS_IOCTL_BASE_CODE 'g'
#define INCFS_IOC_CREATE_FILE _IOWR(INCFS_IOCTL_BASE_CODE, 30, struct incfs_new_file_args)
#define INCFS_IOC_READ_FILE_SIGNATURE _IOR(INCFS_IOCTL_BASE_CODE, 31, struct incfs_get_file_sig_args)
#define INCFS_IOC_FILL_BLOCKS _IOR(INCFS_IOCTL_BASE_CODE, 32, struct incfs_fill_blocks)
#define INCFS_IOC_PERMIT_FILL _IOW(INCFS_IOCTL_BASE_CODE, 33, struct incfs_permit_fill)
#define INCFS_IOC_GET_FILLED_BLOCKS _IOR(INCFS_IOCTL_BASE_CODE, 34, struct incfs_get_filled_blocks_args)
#define INCFS_IOC_CREATE_MAPPED_FILE _IOWR(INCFS_IOCTL_BASE_CODE, 35, struct incfs_create_mapped_file_args)
#define INCFS_IOC_GET_BLOCK_COUNT _IOR(INCFS_IOCTL_BASE_CODE, 36, struct incfs_get_block_count_args)
#define INCFS_IOC_GET_READ_TIMEOUTS _IOR(INCFS_IOCTL_BASE_CODE, 37, struct incfs_get_read_timeouts_args)
#define INCFS_IOC_SET_READ_TIMEOUTS _IOW(INCFS_IOCTL_BASE_CODE, 38, struct incfs_set_read_timeouts_args)
#define INCFS_IOC_GET_LAST_READ_ERROR _IOW(INCFS_IOCTL_BASE_CODE, 39, struct incfs_get_last_read_error_args)
#define INCFS_FEATURE_FLAG_COREFS "corefs"
#define INCFS_FEATURE_FLAG_ZSTD "zstd"
#define INCFS_FEATURE_FLAG_V2 "v2"
enum incfs_compression_alg {
COMPRESSION_NONE = 0,
COMPRESSION_LZ4 = 1,
COMPRESSION_ZSTD = 2,
};
enum incfs_block_flags {
INCFS_BLOCK_FLAGS_NONE = 0,
INCFS_BLOCK_FLAGS_HASH = 1,
};
typedef struct {
__u8 bytes[16];
} incfs_uuid_t __attribute__((aligned(8)));
struct incfs_pending_read_info {
incfs_uuid_t file_id;
__aligned_u64 timestamp_us;
__u32 block_index;
__u32 serial_number;
};
struct incfs_pending_read_info2 {
incfs_uuid_t file_id;
__aligned_u64 timestamp_us;
__u32 block_index;
__u32 serial_number;
__u32 uid;
__u32 reserved;
};
struct incfs_fill_block {
__u32 block_index;
__u32 data_len;
__aligned_u64 data;
__u8 compression;
__u8 flags;
__u16 reserved1;
__u32 reserved2;
__aligned_u64 reserved3;
};
struct incfs_fill_blocks {
__u64 count;
__aligned_u64 fill_blocks;
};
struct incfs_permit_fill {
__u32 file_descriptor;
};
enum incfs_hash_tree_algorithm {
INCFS_HASH_TREE_NONE = 0,
INCFS_HASH_TREE_SHA256 = 1
};
struct incfs_new_file_args {
incfs_uuid_t file_id;
__aligned_u64 size;
__u16 mode;
__u16 reserved1;
__u32 reserved2;
__aligned_u64 directory_path;
__aligned_u64 file_name;
__aligned_u64 file_attr;
__u32 file_attr_len;
__u32 reserved4;
__aligned_u64 signature_info;
__aligned_u64 signature_size;
__aligned_u64 reserved6;
};
struct incfs_get_file_sig_args {
__aligned_u64 file_signature;
__u32 file_signature_buf_size;
__u32 file_signature_len_out;
};
struct incfs_filled_range {
__u32 begin;
__u32 end;
};
struct incfs_get_filled_blocks_args {
__aligned_u64 range_buffer;
__u32 range_buffer_size;
__u32 start_index;
__u32 end_index;
__u32 total_blocks_out;
__u32 data_blocks_out;
__u32 range_buffer_size_out;
__u32 index_out;
};
struct incfs_create_mapped_file_args {
__aligned_u64 size;
__u16 mode;
__u16 reserved1;
__u32 reserved2;
__aligned_u64 directory_path;
__aligned_u64 file_name;
incfs_uuid_t source_file_id;
__aligned_u64 source_offset;
};
struct incfs_get_block_count_args {
__u32 total_data_blocks_out;
__u32 filled_data_blocks_out;
__u32 total_hash_blocks_out;
__u32 filled_hash_blocks_out;
};
struct incfs_per_uid_read_timeouts {
__u32 uid;
__u32 min_time_us;
__u32 min_pending_time_us;
__u32 max_pending_time_us;
};
struct incfs_get_read_timeouts_args {
__aligned_u64 timeouts_array;
__u32 timeouts_array_size;
__u32 timeouts_array_size_out;
};
struct incfs_set_read_timeouts_args {
__aligned_u64 timeouts_array;
__u32 timeouts_array_size;
};
struct incfs_get_last_read_error_args {
incfs_uuid_t file_id_out;
__u64 time_us_out;
__u32 page_out;
__u32 errno_out;
__u64 reserved;
};
#endif
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