378 lines
10 KiB
C
378 lines
10 KiB
C
/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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fileinfo.c
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Abstract:
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This module implements the mini redirector call down routines pertaining to retrieval/
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update of file/directory/volume information.
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Author:
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Balan Sethu Raman [SethuR] 7-March-1995
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Revision History:
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--*/
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#include "precomp.h"
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#pragma hdrstop
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#pragma warning(error:4101) // Unreferenced local variable
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RXDT_DefineCategory(VOLINFO);
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#undef Dbg
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#define Dbg (DEBUG_TRACE_VOLINFO)
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NTSTATUS
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MRxProxyQueryVolumeInformation(
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IN OUT PRX_CONTEXT RxContext
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)
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/*++
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Routine Description:
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This routine queries the volume information
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Arguments:
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pRxContext - the RDBSS context
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Return Value:
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RXSTATUS - The return status for the operation
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--*/
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{
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NTSTATUS Status;
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RxCaptureFcb;
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RxCaptureFobx;
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PMRX_PROXY_SRV_OPEN proxySrvOpen;
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FS_INFORMATION_CLASS FsInformationClass = RxContext->Info.FsInformationClass;
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PVOID pBuffer = RxContext->Info.Buffer;
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PLONG pLengthRemaining = &RxContext->Info.LengthRemaining;
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PFILE_OBJECT FileObject;
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ULONG PassedInLength,ReturnedLength;
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PAGED_CODE();
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if (capFobx == NULL) {
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return STATUS_INVALID_PARAMETER;
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}
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TURN_BACK_ASYNCHRONOUS_OPERATIONS();
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proxySrvOpen = MRxProxyGetSrvOpenExtension(capFobx->pSrvOpen);
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FileObject = proxySrvOpen->UnderlyingFileObject;
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ASSERT (FileObject);
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PassedInLength = *pLengthRemaining;
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Status = MRxProxySyncXxxInformation(
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RxContext, //IN OUT PRX_CONTEXT RxContext,
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IRP_MJ_QUERY_VOLUME_INFORMATION, //IN UCHAR MajorFunction,
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FileObject, //IN PFILE_OBJECT FileObject,
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FsInformationClass, //IN ULONG InformationClass,
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PassedInLength, //IN ULONG Length,
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pBuffer, //OUT PVOID Information,
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&ReturnedLength //OUT PULONG ReturnedLength OPTIONAL
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);
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if (!NT_ERROR(Status)) {
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*pLengthRemaining -= ReturnedLength;
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}
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if (!NT_SUCCESS(Status)) {
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RxDbgTrace( 0, Dbg, ("MRxProxyQueryVolumeInformation: Failed .. returning %lx\n",Status));
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}
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return Status;
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}
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NTSTATUS
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MRxProxySetVolumeInformation(
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IN OUT PRX_CONTEXT pRxContext
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)
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/*++
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Routine Description:
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This routine sets the volume information
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Arguments:
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pRxContext - the RDBSS context
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FsInformationClass - the kind of Fs information desired.
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pBuffer - the buffer for copying the information
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BufferLength - the buffer length
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Return Value:
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RXSTATUS - The return status for the operation
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--*/
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{
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//FS_INFORMATION_CLASS FsInformationClass = RxContext->Info.FsInformationClass;
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//PVOID pBuffer = RxContext->Info.Buffer;
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//LONG BufferLength = RxContext->Info.Length;
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return STATUS_NOT_IMPLEMENTED;
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}
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RXDT_DefineCategory(FILEINFO);
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#undef Dbg
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#define Dbg (DEBUG_TRACE_FILEINFO)
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NTSTATUS
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MRxProxyQueryFileInformation(
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IN PRX_CONTEXT RxContext
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)
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/*++
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Routine Description:
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This routine does a query file info.
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Arguments:
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RxContext - the RDBSS context
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Return Value:
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RXSTATUS - The return status for the operation
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--*/
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{
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NTSTATUS Status;
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RxCaptureFcb;
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RxCaptureFobx;
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FILE_INFORMATION_CLASS FileInformationClass;
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PVOID pBuffer;
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PULONG pLengthRemaining;
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PMRX_PROXY_SRV_OPEN proxySrvOpen = MRxProxyGetSrvOpenExtension(capFobx->pSrvOpen);
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//PMRX_PROXY_FCB proxyFcb = MRxProxyGetFcbExtension(capFcb);
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PFILE_OBJECT FileObject;
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ULONG PassedInLength,ReturnedLength;
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PUNICODE_STRING RemainingName = &(capFcb->AlreadyPrefixedName);
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PMRX_NET_ROOT NetRoot = capFcb->pNetRoot;
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PAGED_CODE();
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FileInformationClass = RxContext->Info.FileInformationClass;
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pBuffer = RxContext->Info.Buffer;
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pLengthRemaining = &RxContext->Info.LengthRemaining;
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RxDbgTrace(+1, Dbg, ("MRxProxyQueryFileInformation: class=%08lx\n",FileInformationClass));
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TURN_BACK_ASYNCHRONOUS_OPERATIONS();
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FileObject = proxySrvOpen->UnderlyingFileObject;
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ASSERT (FileObject);
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PassedInLength = *pLengthRemaining;
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Status = MRxProxySyncXxxInformation(
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RxContext, //IN OUT PRX_CONTEXT RxContext,
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IRP_MJ_QUERY_INFORMATION, //IN UCHAR MajorFunction,
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FileObject, //IN PFILE_OBJECT FileObject,
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FileInformationClass, //IN ULONG InformationClass,
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PassedInLength, //IN ULONG Length,
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pBuffer, //OUT PVOID Information,
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&ReturnedLength //OUT PULONG ReturnedLength OPTIONAL
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);
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if (!NT_ERROR(Status)) {
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*pLengthRemaining -= ReturnedLength;
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}
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if (!NT_SUCCESS(Status)) {
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RxDbgTrace( 0, Dbg, ("MRxProxyQueryFile: Failed .. returning %lx\n",Status));
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}
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RxDbgTraceUnIndent(-1,Dbg);
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return Status;
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}
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typedef enum _INTERESTING_SFI_FOLLOWONS {
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SFI_FOLLOWON_NOTHING,
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SFI_FOLLOWON_DISPOSITION_SENT
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} INTERESTING_SFI_FOLLOWONS;
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#if DBG
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VOID
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MRxProxyDumpRenameInfo (
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PSZ Msg,
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PFILE_RENAME_INFORMATION RenameInfo,
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ULONG BufferLength
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)
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{
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UNICODE_STRING sss;
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sss.Buffer = &RenameInfo->FileName[0];
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sss.Length = ((USHORT)(RenameInfo->FileNameLength));
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RxDbgTrace(0, Dbg, ("MRxProxyDumpRenameInfo: %s %08lx %wZ\n",Msg,BufferLength,&sss));
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}
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#else
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#define MRxProxyDumpRenameInfo(a,b,c);
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#endif
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NTSTATUS
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MRxProxySetFileInformation(
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IN PRX_CONTEXT RxContext
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)
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/*++
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Routine Description:
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This routine does a set file info.
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it works by just remoting the call basically without further ado.
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Arguments:
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RxContext - the RDBSS context
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Return Value:
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RXSTATUS - The return status for the operation
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--*/
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{
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NTSTATUS Status;
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RxCaptureFcb;
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RxCaptureFobx;
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FILE_INFORMATION_CLASS FileInformationClass;
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PVOID pBuffer;
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ULONG BufferLength;
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//PMRX_PROXY_FOBX proxyFobx = MRxProxyGetFileObjectExtension(capFobx);
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PMRX_PROXY_SRV_OPEN proxySrvOpen = MRxProxyGetSrvOpenExtension(capFobx->pSrvOpen);
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//PMRX_PROXY_FCB proxyFcb = MRxProxyGetFcbExtension(capFcb);
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PFILE_OBJECT UnderlyingFileObject = proxySrvOpen->UnderlyingFileObject;
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PAGED_CODE();
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TURN_BACK_ASYNCHRONOUS_OPERATIONS();
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FileInformationClass = RxContext->Info.FileInformationClass;
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pBuffer = RxContext->Info.Buffer;
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BufferLength = RxContext->Info.Length;
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RxDbgTrace(+1, Dbg, ("MRxProxySetFile: Class %08lx size %08lx\n",FileInformationClass,BufferLength));
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if (FileInformationClass==FileRenameInformation) {
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PFILE_RENAME_INFORMATION RenameInfo = (PFILE_RENAME_INFORMATION)pBuffer;
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if (RenameInfo->FileName[0] == L'\\') {
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//here, we have to carefully copy the the rename prefix
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PWCHAR w;
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PMRXPROXY_DEVICE_OBJECT MRxProxyDeviceObject = (PMRXPROXY_DEVICE_OBJECT)(RxContext->RxDeviceObject);
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PUNICODE_STRING RenamePrefix = &MRxProxyDeviceObject->PrefixForRename;
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ULONG prefixlength;
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MRxProxyDumpRenameInfo("Before:",RenameInfo,BufferLength);
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prefixlength = (RenamePrefix->Length)/sizeof(WCHAR);
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w = (&(RenameInfo->FileName[0])) + ((RenameInfo->FileNameLength)/sizeof(WCHAR));
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for (;;) {
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w--;
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//DbgPrint ("yaya %c\n",*w);
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*(w+prefixlength) = *w;
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if ( w == (&(RenameInfo->FileName[0])) ) {
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break;
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}
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}
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RtlCopyMemory(&(RenameInfo->FileName[0]),RenamePrefix->Buffer,RenamePrefix->Length);
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RenameInfo->FileNameLength += RenamePrefix->Length;
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BufferLength += RenamePrefix->Length;
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MRxProxyDumpRenameInfo(" After:",RenameInfo,BufferLength);
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//DbgBreakPoint();
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}
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}
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if(BufferLength==0){
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//zero length means that this is the special calldown from the cachemanager...for now just boost
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//joejoe this should be fixed soon
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BufferLength = sizeof(FILE_END_OF_FILE_INFORMATION);
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}
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RxDbgTrace( 0, Dbg, (" ---->UserBuffer = %08lx\n", pBuffer));
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ASSERT (UnderlyingFileObject);
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//this could be a setfileinfo that comes in from the lazywriter
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//after the underlying file has already been cleaned up
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//BUGBUG not too sure about this...........
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if (UnderlyingFileObject == NULL) {
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Status = STATUS_FILE_CLOSED;
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RxDbgTrace(-1, Dbg, (" ---->AlreadyClosed!!! Status = %08lx\n", Status));
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return(Status);
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}
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Status = MRxProxySyncXxxInformation(
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RxContext, //IN OUT PRX_CONTEXT RxContext,
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IRP_MJ_SET_INFORMATION, //IN UCHAR MajorFunction,
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UnderlyingFileObject, //IN PFILE_OBJECT FileObject,
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FileInformationClass, //IN ULONG InformationClass,
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BufferLength, //IN ULONG Length,
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pBuffer, //OUT PVOID Information,
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NULL //OUT PULONG ReturnedLength OPTIONAL
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);
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if (!NT_SUCCESS(Status)) {
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RxDbgTrace( 0, Dbg, ("MRxProxySetFile: Failed .. returning %lx\n",Status));
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}
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RxDbgTraceUnIndent(-1,Dbg);
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return Status;
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}
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NTSTATUS
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MRxProxySetFileInformationAtCleanup(
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IN PRX_CONTEXT RxContext
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)
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/*++
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Routine Description:
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This routine sets the file information on cleanup. rdrs just swallow this operation (i.e.
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it doesn't generate it). we cannot do the same because we are local..........
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This routine implements the set file info call called on cleanup or flush. We dont actually set the times
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but we do the endoffile info.
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Arguments:
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pRxContext - the RDBSS context
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Return Value:
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RXSTATUS - The return status for the operation
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--*/
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{
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NTSTATUS Status;
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FILE_INFORMATION_CLASS FileInformationClass;
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TURN_BACK_ASYNCHRONOUS_OPERATIONS();
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FileInformationClass = RxContext->Info.FileInformationClass;
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if (FileInformationClass == FileBasicInformation) {
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return(STATUS_SUCCESS);
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}
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RxDbgTrace(+1, Dbg, ("MRxLocalSetFileInfoAtCleanup...\n"));
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Status = MRxProxySetFileInformation(RxContext);
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RxDbgTrace(-1, Dbg, ("MRxLocalSetFileInfoAtCleanup...status =%08lx\n", Status));
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}
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