162 lines
3.7 KiB
C
162 lines
3.7 KiB
C
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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nb32.c
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Abstract:
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This module contains routines to support thunking 32-bit NetBIOS IOCTLs
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on Win64.
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Author:
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Samer Arafeh (SamerA) 11-June-2000
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Environment:
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Kernel mode
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Revision History:
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--*/
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#if defined(_WIN64)
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#include "nb.h"
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NTSTATUS
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NbThunkNcb(
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IN PNCB32 Ncb32,
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OUT PDNCB Dncb)
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/*++
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Routine Description:
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This routine converts the input NCB structure received from the
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32-bit app, into a 64-bit compatible structure
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Arguments:
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Ncb32 - Pointer to the NCB received from the 32-bit app.
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Dncb - Pointer to the structure to receive the 64-bit NCB after
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thunking the 32-bit one.
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Return Value:
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The function returns the status of the operation.
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--*/
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{
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Dncb->ncb_command = Ncb32->ncb_command;
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Dncb->ncb_retcode = Ncb32->ncb_retcode;
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Dncb->ncb_lsn = Ncb32->ncb_lsn;
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Dncb->ncb_num = Ncb32->ncb_num;
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Dncb->ncb_buffer = (PUCHAR)Ncb32->ncb_buffer;
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Dncb->ncb_length = Ncb32->ncb_length;
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RtlCopyMemory(Dncb->ncb_callname,
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Ncb32->ncb_callname,
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sizeof(Dncb->ncb_callname)) ;
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RtlCopyMemory(Dncb->ncb_name,
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Ncb32->ncb_name,
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sizeof(Dncb->ncb_name));
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Dncb->ncb_rto = Ncb32->ncb_rto;
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Dncb->ncb_sto = Ncb32->ncb_sto;
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Dncb->ncb_post = (void (*)(struct _NCB *))
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Ncb32->ncb_post;
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Dncb->ncb_lana_num = Ncb32->ncb_lana_num;
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Dncb->ncb_cmd_cplt = Ncb32->ncb_cmd_cplt;
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return STATUS_SUCCESS;
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}
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NTSTATUS
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NbCompleteIrp32(
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IN OUT PIRP Irp
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)
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/*++
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Routine Description:
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This routine completes an NCB Irp if it has been received
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from a 32-bit appliation. The caller should verify that the Irp
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is coming from a 32-bit context.
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Arguments:
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Irp - Pointer to the request packet representing the I/O request.
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Return Value:
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The function returns the status of the operation.
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--*/
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{
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PDNCB Dncb;
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PNCB32 Ncb32;
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ULONG Count;
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//
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// Conver the 64-bit NCB to a 32-bit compatible NCB
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// before the IO MGR copies it back to the supplied
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// user-mode buffer
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//
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if ((Irp->Flags & (IRP_BUFFERED_IO | IRP_INPUT_OPERATION)) ==
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(IRP_BUFFERED_IO | IRP_INPUT_OPERATION))
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{
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Dncb = (PDNCB) Irp->AssociatedIrp.SystemBuffer;
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Ncb32 = (PNCB32) Dncb;
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if ((Irp->IoStatus.Information > 0) &&
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(!NT_ERROR(Irp->IoStatus.Status)) &&
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(InterlockedCompareExchange(&Dncb->Wow64Flags, TRUE, FALSE) == FALSE))
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{
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Ncb32->ncb_command = Dncb->ncb_command;
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Ncb32->ncb_retcode = Dncb->ncb_retcode;
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Ncb32->ncb_lsn = Dncb->ncb_lsn;
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Ncb32->ncb_num = Dncb->ncb_num;
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Ncb32->ncb_buffer = (UCHAR * POINTER_32)PtrToUlong(Dncb->ncb_buffer);
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Ncb32->ncb_length = Dncb->ncb_length;
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for (Count=0 ; Count<sizeof(Ncb32->ncb_callname) ; Count++)
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{
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Ncb32->ncb_callname[Count] = Dncb->ncb_callname[Count];
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}
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for (Count=0 ; Count<sizeof(Ncb32->ncb_name) ; Count++)
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{
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Ncb32->ncb_name[Count] = Dncb->ncb_name[Count];
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}
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Ncb32->ncb_rto = Dncb->ncb_rto;
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Ncb32->ncb_sto = Dncb->ncb_sto;
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Ncb32->ncb_post = (void (* POINTER_32)(struct _NCB *))
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PtrToUlong(Dncb->ncb_post);
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Ncb32->ncb_lana_num = Dncb->ncb_lana_num;
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Ncb32->ncb_cmd_cplt = Dncb->ncb_cmd_cplt;
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Irp->IoStatus.Information = FIELD_OFFSET(NCB32, ncb_cmd_cplt);
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}
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}
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return STATUS_SUCCESS;
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}
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#endif // (_WIN64)
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