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185 lines
2.9 KiB
C++
185 lines
2.9 KiB
C++
/*++
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Copyright (c) Microsoft Corporation
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Module Name:
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FxFileObjectApi.cpp
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Abstract:
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This modules implements the C API's for the FxFileObject.
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Author:
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Environment:
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Both kernel and user mode
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Revision History:
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--*/
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#include "coreprivshared.hpp"
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#include "fxfileobject.hpp"
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extern "C" {
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// #include "FxFileObjectApi.tmh"
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}
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//
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// Extern "C" the entire file
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//
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extern "C" {
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__drv_maxIRQL(PASSIVE_LEVEL)
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PUNICODE_STRING
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STDCALL
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WDFEXPORT(WdfFileObjectGetFileName)(
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__in
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PWDF_DRIVER_GLOBALS DriverGlobals,
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__in
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WDFFILEOBJECT FileObject
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)
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/*++
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Routine Description:
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This returns the UNICODE_STRING for the FileName inside
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the WDM fileobject.
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Arguments:
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FileObject - WDFFILEOBJECT
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Return Value:
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PUNICODE_STRING (file name)
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--*/
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{
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DDI_ENTRY();
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PFX_DRIVER_GLOBALS pFxDriverGlobals;
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NTSTATUS status;
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FxFileObject* pFO;
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//
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// Validate the FileObject object handle, and get its FxFileObject*
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//
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FxObjectHandleGetPtrAndGlobals(GetFxDriverGlobals(DriverGlobals),
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FileObject,
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FX_TYPE_FILEOBJECT,
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(PVOID*)&pFO,
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&pFxDriverGlobals);
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status = FxVerifierCheckIrqlLevel(pFxDriverGlobals, PASSIVE_LEVEL);
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if (!NT_SUCCESS(status)) {
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return NULL;
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}
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if (pFO->GetWdmFileObject() != NULL) {
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return pFO->GetFileName();
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}
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else {
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return NULL;
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}
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}
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__drv_maxIRQL(DISPATCH_LEVEL)
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ULONG
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STDCALL
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WDFEXPORT(WdfFileObjectGetFlags)(
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__in
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PWDF_DRIVER_GLOBALS DriverGlobals,
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__in
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WDFFILEOBJECT FileObject
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)
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/*++
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Routine Description:
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This returns the flags inside the WDM fileobject.
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Arguments:
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FileObject - WDFFILEOBJECT
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Return Value:
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ULONG (flags)
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--*/
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{
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DDI_ENTRY();
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FxFileObject* pFO;
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//
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// Validate the FileObject object handle, and get its FxFileObject*
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//
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FxObjectHandleGetPtr(GetFxDriverGlobals(DriverGlobals),
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FileObject,
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FX_TYPE_FILEOBJECT,
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(PVOID*)&pFO);
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if (pFO->GetWdmFileObject() != NULL) {
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return pFO->GetFlags();
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}
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else {
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return 0x0;
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}
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}
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__drv_maxIRQL(DISPATCH_LEVEL)
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WDFDEVICE
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STDCALL
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WDFEXPORT(WdfFileObjectGetDevice)(
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__in
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PWDF_DRIVER_GLOBALS DriverGlobals,
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__in
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WDFFILEOBJECT FileObject
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)
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/*++
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Routine Description:
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This returns the Device that the fileobject is associated with.
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Arguments:
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FileObject - WDFFILEOBJECT
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Return Value:
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WDFDEVICE
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--*/
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{
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DDI_ENTRY();
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FxFileObject* pFO;
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//
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// Validate the FileObject object handle, and get its FxFileObject*
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//
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FxObjectHandleGetPtr(GetFxDriverGlobals(DriverGlobals),
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FileObject,
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FX_TYPE_FILEOBJECT,
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(PVOID*)&pFO);
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return pFO->GetDevice()->GetHandle();
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}
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} // extern "C"
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