Struct km::irp::IRP [−] [src]

pub struct IRP {
    pub Type: u16,
    pub Size: u16,
    pub MdlAddress: PVOID,
    pub Flags: u32,
    pub SystemBuffer: PVOID,
    pub ThreadListEntry: LIST_ENTRY,
    pub IoStatus: IO_STATUS_BLOCK,
    pub RequestorMode: KPROCESSOR_MODE,
    pub PendingReturned: bool,
    pub StackCount: i8,
    pub CurrentLocation: i8,
    pub Cancel: bool,
    pub CancelIrql: KIRQL,
    pub ApcEnvironment: u8,
    pub AllocationFlags: u8,
    pub UserIosb: PIO_STATUS_BLOCK,
    pub UserEvent: PKEVENT,
    pub UserApcRoutine: PIO_APC_ROUTINE,
    pub UserApcContext: PVOID,
    pub CancelRoutine: PDRIVER_CANCEL,
    pub UserBuffer: PVOID,
    pub Overlay: _IRP_OVERLAY,
}

The IRP structure is a partial opaque structure that represents an I/O request packet.

Fields

`Type`
`Size`
`MdlAddress`	Pointer to an `MDL` describing a user buffer, if the driver is using direct I/O.
`Flags`	Flags word - used to remember various flags.
`SystemBuffer`	Pointer to a system-space buffer if the driver is using buffered I/O.
`ThreadListEntry`
`IoStatus`	I/O status - final status of operation.
`RequestorMode`	Indicates the execution mode of the original requester of the operation.
`PendingReturned`	If set to `TRUE`, a driver has marked the IRP pending.
`StackCount`	Stack state information.
`CurrentLocation`	Stack state information.
`Cancel`	If set to `TRUE`, the IRP either is or should be canceled.
`CancelIrql`	Irql at which the cancel spinlock was acquired.
`ApcEnvironment`
`AllocationFlags`	Allocation control flags.
`UserIosb`	User parameters.
`UserEvent`
`UserApcRoutine`
`UserApcContext`
`CancelRoutine`	Contains the entry point for a driver-supplied `Cancel` routine to be called if the IRP is canceled.
`UserBuffer`	Contains the address of an output buffer for `IRP_MJ_DEVICE_CONTROL`.
`Overlay`	Kernel structures.

Methods

`impl IRP`

`fn get_current_stack_location(&mut self) -> &mut IO_STACK_LOCATION`

Returns a pointer to the caller's stack location in the given IRP.

`fn complete_request(&mut self, Status: NTSTATUS) -> NTSTATUS`

Indicates that the caller has completed all processing for a given I/O request and is returning the given IRP to the I/O manager.