kcom.c

ReactOS是一些高手根据Windows XP的内核编写出的类XP。内核实现机理和API函数调用几乎相同。甚至可以兼容XP的程序。喜欢研究系统内核的人可以看一看。

/* ===============================================================
    Kernel-mode COM
*/

#include <windows.h>
#include <ntddk.h>
#include <ks.h>
#include <kcom.h>
#include <debug.h>


/* http://msdn2.microsoft.com/en-us/library/ms809781.aspx */
COMDDKAPI NTSTATUS NTAPI
KoCreateInstance(
    IN  REFCLSID ClassId,
    IN  IUnknown* UnkOuter OPTIONAL,
    IN  ULONG ClsContext,
    IN  REFIID InterfaceId,
    OUT PVOID* Interface)
{
    /* If UnkOuter isn't NULL, it must be IUnknown - TODO: CHECK THIS PARAM */
    /* TODO: Check IRQL? */

    DPRINT("KoCreateInstance called\n");

    if ( ClsContext != CLSCTX_KERNEL_SERVER )
    {
        DPRINT("FAILED: ClsContext must be CLSCTX_KERNEL_SERVER\n");
        return STATUS_INVALID_PARAMETER_3;
    }

    /*
        Find the desired interface and create an instance.  

        But we also need to supply a
        pointer which will be set to a list of available interfaces, to
        IoGetDeviceInterfaces.

        We can then create a file based on this information and thus talk
        to the appropriate device.

        Useful references:
            http://www.freelists.org/archives/wdmaudiodev/01-2003/msg00023.html

        TODO
    */

    DPRINT("** FAKING SUCCESS **\n");

    return STATUS_SUCCESS;
}