// sffdisk.h

typedef struct _SFFDISK_DEVICE_PASSWORD_DATA {
  USHORT        Size;
  USHORT        Reserved;
  SFFDISK_DPCMD Command;
  ULONG_PTR     Information;
  UCHAR         PasswordLength;
  UCHAR         NewPasswordLength;
  UCHAR         Data[0];
} SFFDISK_DEVICE_PASSWORD_DATA, *PSFFDISK_DEVICE_PASSWORD_DATA;
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Windows Driver Kit DDI reference (ns-sffdisk-sffdisk_device_password_data)

Description

The SFFDISK_DEVICE_PASSWORD_DATA structure is used in conjunction with an IOCTL_SFFDISK_DEVICE_PASSWORD to change the password on a Secure Digital (SD) card.

Members

`Size`

The size, in bytes, of this structure.

`Reserved`

Reserved.

`Command`

Contains a structure of type SFFDISK_DPCMD that defines the type of operation.

`Information`

On output, this member contains the return value for the operation.

`PasswordLength`

The length, in bytes, of the current password.

`NewPasswordLength`

The length, in bytes, of the new password.

`Data[0]`

Buffer that the caller uses to pass in both the old and the new password. The current (old) password is at the beginning of the buffer and is immediately followed by the new password.

SFFDISK_DEVICE_PASSWORD_DATA - NtDoc