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BDCB_CALLBACK_TYPE enumeration (ntddk.h)

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The BDCB_CALLBACK_TYPE enumeration specifies whether the callback being passed to a BOOT_DRIVER_CALLBACK_FUNCTION routine is a status update or a boot-start driver initialization notification.

Syntax

typedef enum _BDCB_CALLBACK_TYPE {
  BdCbStatusUpdate,
  BdCbInitializeImage
} BDCB_CALLBACK_TYPE, *PBDCB_CALLBACK_TYPE;

Constants

 
BdCbStatusUpdate
A status update provided by the system to a boot-start driver.
BdCbInitializeImage
A boot image is about to be initialized. During this callback, boot-start drivers may classify a boot image as a known good image or a known bad image.

Remarks

The two callback types have unique context structures that provide additional information specific to the callback.

Value Corresponding structure to use
BdCbStatusUpdate BDCB_STATUS_UPDATE_TYPE
BdCbInitializeImage BDCB_CLASSIFICATION

Requirements

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

See also

BDCB_CLASSIFICATION

BDCB_STATUS_UPDATE_TYPE

BOOT_DRIVER_CALLBACK_FUNCTION