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

[Alexandre Julliard]

Module: wine
Branch: master
Commit: cffe06af801471584344462e6118c8bc7ab73b6f
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=cffe06af801471584344462e61...

Author: Sebastian Lackner 
Date:   Mon Nov 10 23:48:14 2014 +0100

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

---

dlls/ntoskrnl.exe/ntoskrnl.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/dlls/ntoskrnl.exe/ntoskrnl.c b/dlls/ntoskrnl.exe/ntoskrnl.c
index c10377a..af1626d 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.c
+++ b/dlls/ntoskrnl.exe/ntoskrnl.c
@@ -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 */