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FEATURE_DATA_WRITE_PROTECT structure

The FEATURE_DATA_WRITE_PROTECT structure contains information about the Write Protect feature.

Syntax


typedef struct _FEATURE_DATA_WRITE_PROTECT {
  FEATURE_HEADER Header;
  UCHAR          SupportsSWPPBit  :1;
  UCHAR          SupportsPersistentWriteProtect  :1;
  UCHAR          WriteInhibitDCB  :1;
  UCHAR          DiscWriteProtectPAC  :1;
  UCHAR          Reserved01  :4;
  UCHAR          Reserved2[3];
} FEATURE_DATA_WRITE_PROTECT, *PFEATURE_DATA_WRITE_PROTECT;

Members

Header

Contains a FEATURE_HEADER structure with header information for this feature descriptor.

SupportsSWPPBit

Indicates, when set to 1, that the device supports set/release PWP status. If additionally SupportsPersistentWriteProtect is set to 1, the device supports the SEND DVD STRUCTURE command with Format = 0xC0. For more details on the write protect feature see the SCSI Multimedia - 4 (MMC-4) specification.

SupportsPersistentWriteProtect

Indicates, when set to 1, that the device supports the persistent write protect bit of the time-out & protect mode page. For more details on the write protect feature see the SCSI Multimedia - 4 (MMC-4) specification.

WriteInhibitDCB
DiscWriteProtectPAC
Reserved01
Reserved2

Reserved.

Remarks

This structure holds data for the feature named "Write Protect" by the MMC-3 specification. Devices that support this feature allow the initiator to change the write-protection state of the media programmatically.

Requirements

Header

Ntddmmc.h (include Ntddcdrm.h)

See also

FEATURE_HEADER
FEATURE_NUMBER

 

 

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