FSCTL_OFFLOAD_WRITE_INPUT structure (ntifs.h)
The FSCTL_OFFLOAD_WRITE_INPUT structure contains the input for the FSCTL_OFFLOAD_WRITE control code request.
Syntax
typedef struct _FSCTL_OFFLOAD_WRITE_INPUT {
ULONG Size;
ULONG Flags;
ULONGLONG FileOffset;
ULONGLONG CopyLength;
ULONGLONG TransferOffset;
UCHAR Token[512];
} FSCTL_OFFLOAD_WRITE_INPUT, *PFSCTL_OFFLOAD_WRITE_INPUT;
Members
Size
The size of this structure. Set this member to sizeof(FSCTL_OFFLOAD_WRITE_INPUT).
Flags
This member is not used. Set to 0.
FileOffset
The position in the file to begin writing to. The offset value must be aligned to a logical sector boundary on the volume.
CopyLength
The length, in bytes, of data to write, starting at FileOffset. The length value must align to a logical sector boundary on the volume, except when the length matches end-of-file.
TransferOffset
The position in the data associated with Token to begin writing from.
Token[512]
A byte array that contains a STORAGE_OFFLOAD_TOKEN token structure that represents a file data range to be logically written. The contents of Token must remain unmodified between offload operations.
Remarks
CopyLength can be zero. The value of FileOffset + CopyLength is bounded by both MAXULONGLONG and MAXFILESIZE. FSCTL_OFFLOAD_WRITE returns with STATUS_INVALID_PARAMETER if these conditions are not met.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 8 |
| Header | ntifs.h (include Ntifs.h, Fltkernel.h) |