On Mon, Aug 4, 2025 at 4:35 PM Tu Dinh <ngoc-tu.dinh@xxxxxxxxxx> wrote:
+/*! \typedef XENFILT_EMULATED_IS_DEVICE_PRESENT
+ \brief Determine whether a given device is present in the VM
+
+ \param Interface The interface header
+ \param DeviceID The DeviceID of the device, or NULL to query the force-
+ activated device
+ \param InstanceID The (un-prefixed) InstanceID of the device or
+ NULL to match any device instance
+ \param IsForceActivated Returns 1 if the device was force-activated, -1 if
+ the device was not active and another device was force-activated,
+ and 0 otherwise
+ \return TRUE if the specified device is present in the system or
+ FALSE if it is not
+*/
+typedef BOOLEAN
+(*XENFILT_EMULATED_IS_DEVICE_PRESENT)(
+ _In_ PVOID Context,
+ _In_opt_ PSTR DeviceID,
+ _In_opt_ PSTR InstanceID,
+ _Out_opt_ PLONG IsForceActivated
+ );
+
Making IsForceActivated an enum would help with clarity. The enum probably needs defining in the emulated_interface.h file, so reordering patches or defining the enum first may help.
Owen
