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Windows Driver Kit DDI reference (ns-ehstorbandmgmt-_delete_band_parameters)

_DELETE_BAND_PARAMETERS structure

Description

A configured band is deleted according to the parameters in a DELETE_BAND_PARAMETERS structure. This structure is input for an IOCTL_EHSTOR_BANDMGMT_DELETE_BAND request.

Members

`StructSize`

The size of this structure in bytes. Set to sizeof(DELETE_BAND_PARAMETERS).

`Flags`

Delete operation flags. This value is a bitwise OR combination of the following.

Value	Meaning
DELBAND_ERASE_BEFORE_DELETE	Perform a cryptographic erase of the band property data before delete.

`Reserved`

Reserved.

`BandId`

The identifier of a single band to return information for. BandSize must be 0 when a single band is selected with BandId. To use BandStart and BandSize instead of BandId to select a band, set BandId = (ULONG) –1.

`BandStart`

The starting byte location on the storage device to begin a band search. An attempt is made to match a band at or after BandStart.

`AuthKeyOffset`

The offset, in bytes, of an AUTH_KEY structure containing the authorization key for the band. The offset is from the beginning of DELETE_BAND_PARAMETERS. AUTH_KEY is declared in ehstorbandmgmt.h as the following.

typedef struct _AUTH_KEY
{
    ULONG   KeySize;
    UCHAR   Key[ANYSIZE_ARRAY];
} AUTH_KEY;

KeySize

The size of the key, in bytes, of the key data at Key. If KeySize is set to 0, a default key is used.

Key

A variable-length byte array containing the key data.

To specify a default authentication key to the band, set AuthKeyOffset = EHSTOR_BANDMGR_NO_KEY. If Flags contains DELBAND_ERASE_BEFORE_DELETE, AuthKeyOffset must be set to EHSTOR_BANDMGR_NO_KEY.

Remarks

Precedence is given to BandID for band selection. If BandID is greater than 0 and BandID is less than the MaxBandCount member of BAND_MANAGEMENT_CAPABILITIES, then BandID is used as the only selection criteria for a band match. If BandID == –1, then BandStart is used as the match criteria to select a band. If no band matches either selection criteria, then STATUS_INVALID_PARAMETER is returned in the IoStatus block for IOCTL_EHSTOR_BANDMGMT_DELETE_BAND.

If DELBAND_ERASE_BEFORE_DELETE is set in Flags, then an authentication key is not needed to delete the band. If this flag is not set, the current authentication key must be included at AuthKeyOffset.

DELETE_BAND_PARAMETERS - NtDoc