IOCTL_EHSTOR_BANDMGMT_REVERT IOCTL (ehstorbandmgmt.h)

Artikel
05/18/2021

This IOCTL_EHSTOR_BANDMGMT_REVERT request is sent to deactivate the security features and band management on a storage device. The request includes revert options and the authentication key.

Major code

IRP_MJ_DEVICE_CONTROL

Input buffer

The input buffer at Irp->AssociatedIrp.SystemBuffer contains an ACTIVATE_REVERT_PARAMETERS structure. ACTIVATE_REVERT_PARAMETERS is declared in ehstorbandmgmt.h as the following.

typedef struct _ACTIVATE_REVERT_PARAMETERS
{
    ULONG           StructSize;
    ULONG           Flags;
    ULONG           AuthKeyOffset;
} ACTIVATE_REVERT_PARAMETERS;

Following ACTIVATE_REVERT_PARAMETERS in the system buffer is an AUTH_KEY structure. This holds the key data bytes for the authentication key. AUTH_KEY is declared in ehstorbandmgmt.h as the following.

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

Input buffer length

The length of an ACTIVATE_REVERT_PARAMETERS structure.

Output buffer

None.

Output buffer length

None.

Status block

One of the following values can be returned in the Status field.

Status Value	Description
STATUS_SUCCESS	Security features on the storage device were deactivated.
STATUS_INVALID_DEVICE_REQUEST	The storage device does not support band management.
STATUS_INVALID_BUFFER_SIZE	The input buffer size is invalid.
STATUS_INVALID_PARAMETER	Information in the input buffer is invalid.
STATUS_ACCESS_DENIED	The authentication key is invalid. Deactivation is denied.
STATUS_DEVICE_CONFIGURATION_ERROR	The system cannot configure the device in a supported mode.
STATUS_IO_DEVICE_ERROR	Communication failed. The storage device might be incompatible with security protocols.
STATUS_INVALID_DEVICE_STATE	The storage device is not activated.

Remarks

On successful return from an IOCTL_EHSTOR_BANDMGMT_REVERT request, the storage device will return to an inactive security state and all band management IOCTLs, except for IOCTL_EHSTOR_BANDMGMT_QUERY_CAPABILITIES and IOCTL_EHSTOR_BANDMGMT_ACTIVATE, become unavailable.

Requirements

Requirement	Value
Minimum supported client	Available starting with Windows 8
Header	ehstorbandmgmt.h (include EhStorBandMgmt.h)

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