// storport.h

ULONG StorPortReadRegistryKey(
  PVOID  HwDeviceExtension,
  PWSTR  AbsolutePath,
  PWSTR  KeyName,
  ULONG  ValueType,
  PVOID  *ValueData,
  PULONG ValueDataLength
);
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (nf-storport-storportreadregistrykey)

Description

The StorPortReadRegistryKey function is used by the miniport to read the specified registry key. The caller provides the absolute path to the key to be read.

Parameters

`HwDeviceExtension`

A pointer to the hardware device extension. This is specific to the miniport driver instance.

`AbsolutePath`

The absolute path to the key to be read.

`KeyName`

The key path under the absolute path.

`ValueType`

The type of the registry key value in REG_XXXX format. Currently, only REG_DWORD value type is supported.

`ValueData`

Pointer to the data buffer to receive the registry key value.

`ValueDataLength`

The size of the ValueData, in bytes.

Return value

Returns a STOR_STATUS code as defined in storport.h.

StorPortReadRegistryKey - NtDoc