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#include "idl_types.h"
[
	pointer_default(unique)
]
interface copychunk
{
	typedef [public] struct {
		uint8 resume_key[24];
		uint32 context_len;
		/* <56> Windows sends 4 bytes of zero for the context field. */
		uint8 context[4];
	} req_resume_key_rsp;

	typedef struct {
		hyper source_off;
		hyper target_off;
		uint32 length;
		uint32 reserved;
	} srv_copychunk;

	typedef [public] struct {
		uint8 source_key[24];
		uint32 chunk_count;
		uint32 reserved;
		srv_copychunk chunks[chunk_count];
	} srv_copychunk_copy;

	typedef [public] struct {
		uint32 chunks_written;
		uint32 chunk_bytes_written;
		uint32 total_bytes_written;
	} srv_copychunk_rsp;

	typedef [public] struct {
		uint32 version;
		uint32 size;
		uint32 maximum_token_lifetime;
		uint32 default_token_lifetime;
		hyper maximum_xfer_size;
		hyper optimal_xfer_count;
		uint32 maximum_data_descriptors;
		uint32 maximum_xfer_length_per_descriptor;
		uint32 optimal_xfer_length_per_descriptor;
		uint16 optimal_xfer_length_granularity;
		uint8 reserved[2];
	} device_copy_offload_descriptor;

	/* XXX: 0x00000001 is unconfirmed */
	const uint32 STORAGE_OFFLOAD_TOKEN_TYPE_ZERO_DATA = 0x00000001;
	typedef [public] struct {
		uint32 token_type;
		uint8 reserved[2];
		uint16 token_id_len;
		[size_is(token_id_len)] uint8 token[];
	} storage_offload_token;

	typedef [public] struct {
		uint32 size;
		uint32 flags;
		uint32 token_time_to_live;
		uint32 reserved;
		hyper file_offset;
		hyper length;
	} fsctl_offload_read_input;

	const uint32 OFFLOAD_READ_FLAG_FILE_TOO_SMALL = 0x00000001;
	const uint32 OFFLOAD_READ_FLAG_ALL_ZERO_BEYOND_RANGE = 0x00000002;
	const uint32 OFFLOAD_READ_FLAG_CANNOT_OFFLOAD_BEYOND_RANGE = 0x00000004;
	typedef [public] struct {
		uint32 size;
		uint32 flags;
		hyper xfer_length;
		uint8 token[512];
	} fsctl_offload_read_output;

	typedef [public] struct {
		uint32 size;
		uint32 flags;
		hyper file_offset;
		hyper copy_length;
		hyper xfer_offset;
		uint8 token[512];
	} fsctl_offload_write_input;

	typedef [public] struct {
		uint32 size;
		uint32 flags;
		hyper length_written;
	} fsctl_offload_write_output;
}