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ntoskrnl: Initialize irp.Tail.Overlay.OriginalFileObject with stub file object.

This commit is contained in:
Sebastian Lackner 2014-11-10 23:48:14 +01:00 committed by Alexandre Julliard
parent 632de943be
commit cffe06af80
1 changed files with 6 additions and 0 deletions
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6
dlls/ntoskrnl.exe/ntoskrnl.c
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@ -143,6 +143,7 @@ static NTSTATUS process_ioctl( DEVICE_OBJECT *device, ULONG code, void *in_buff,
IRP irp;
MDL mdl;
IO_STACK_LOCATION irpsp;
FILE_OBJECT file;
PDRIVER_DISPATCH dispatch = device->DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL];
NTSTATUS status;
LARGE_INTEGER count;
@ -153,6 +154,7 @@ static NTSTATUS process_ioctl( DEVICE_OBJECT *device, ULONG code, void *in_buff,
memset( &irp, 0x55, sizeof(irp) );
memset( &irpsp, 0x66, sizeof(irpsp) );
memset( &mdl, 0x77, sizeof(mdl) );
memset( &file, 0x88, sizeof(file) );
irp.RequestorMode = UserMode;
if ((code & 3) == METHOD_BUFFERED)
@ -167,6 +169,7 @@ static NTSTATUS process_ioctl( DEVICE_OBJECT *device, ULONG code, void *in_buff,
irp.UserBuffer = out_buff;
irp.MdlAddress = &mdl;
irp.Tail.Overlay.s.u2.CurrentStackLocation = &irpsp;
irp.Tail.Overlay.OriginalFileObject = &file;
irp.UserIosb = NULL;
irpsp.MajorFunction = IRP_MJ_DEVICE_CONTROL;
@ -183,6 +186,9 @@ static NTSTATUS process_ioctl( DEVICE_OBJECT *device, ULONG code, void *in_buff,
mdl.ByteCount = *out_size;
mdl.ByteOffset = 0;
file.FsContext = NULL;
file.FsContext2 = NULL;
device->CurrentIrp = &irp;
KeQueryTickCount( &count ); /* update the global KeTickCount */