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SPB_TRANSFER_BUFFER_FORMAT enumeration (spb.h)

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The SPB_TRANSFER_BUFFER_FORMAT enumeration specifies the format of the buffer that is described by an SPB_TRANSFER_BUFFER structure.

Syntax

typedef enum SPB_TRANSFER_BUFFER_FORMAT {
  SpbTransferBufferFormatInvalid,
  SpbTransferBufferFormatSimple,
  SpbTransferBufferFormatList,
  SpbTransferBufferFormatSimpleNonPaged,
  SpbTransferBufferFormatMdl,
  SpbTransferBufferFormatMax
}  *PSPB_TRANSFER_BUFFER_FORMAT;

Constants

 
SpbTransferBufferFormatInvalid
Reserved for use by the operating system.
SpbTransferBufferFormatSimple
The transfer buffer is described by a simple user-mode or kernel-mode pointer and a length.
SpbTransferBufferFormatList
The transfer buffer is described by a pointer to a list of buffers and a count of the number of buffers in the list.
SpbTransferBufferFormatSimpleNonPaged
The transfer buffer is described by a simple user-mode or kernel-mode pointer and a length. The buffer resides in non-paged memory. This format value is valid only if the client that originates the I/O request is a kernel-mode driver.
SpbTransferBufferFormatMdl
The transfer buffer is described by a pointer to an MDL. This format value is valid only if the client that originates the I/O request is a kernel-mode driver.
SpbTransferBufferFormatMax
Reserved for use by the operating system.

Remarks

The Format member of the SPB_TRANSFER_BUFFER structure is an SPB_TRANSFER_BUFFER_FORMAT enumeration value.

Requirements

Requirement Value
Minimum supported client Supported starting with Windows 8.
Header spb.h

See also