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![Trevor Thompson](/assets/img/avatar_default.png)
[BOOTDATA] - Add a commented-out section to hivesys.inf which can add the required key to enable NTFS write support. svn path=/branches/GSoC_2016/NTFS/; revision=74685
207 lines
5.8 KiB
C
207 lines
5.8 KiB
C
/*
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* ReactOS kernel
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* Copyright (C) 2008 ReactOS Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: drivers/filesystem/ntfs/dispatch.c
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* PURPOSE: NTFS filesystem driver
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* PROGRAMMER: Pierre Schweitzer
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* UPDATE HISTORY:
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*/
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/* INCLUDES *****************************************************************/
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#include "ntfs.h"
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#define NDEBUG
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#include <debug.h>
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static LONG QueueCount = 0;
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/* FUNCTIONS ****************************************************************/
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static WORKER_THREAD_ROUTINE NtfsDoRequest;
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static
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NTSTATUS
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NtfsQueueRequest(PNTFS_IRP_CONTEXT IrpContext)
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{
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InterlockedIncrement(&QueueCount);
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DPRINT("NtfsQueueRequest(IrpContext %p), %d\n", IrpContext, QueueCount);
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ASSERT(!(IrpContext->Flags & IRPCONTEXT_QUEUE) &&
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(IrpContext->Flags & IRPCONTEXT_COMPLETE));
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IrpContext->Flags |= IRPCONTEXT_CANWAIT;
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IoMarkIrpPending(IrpContext->Irp);
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ExInitializeWorkItem(&IrpContext->WorkQueueItem, NtfsDoRequest, IrpContext);
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ExQueueWorkItem(&IrpContext->WorkQueueItem, CriticalWorkQueue);
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return STATUS_PENDING;
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}
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static
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NTSTATUS
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NtfsDispatch(PNTFS_IRP_CONTEXT IrpContext)
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{
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PIRP Irp = IrpContext->Irp;
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NTSTATUS Status = STATUS_UNSUCCESSFUL;
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TRACE_(NTFS, "NtfsDispatch()\n");
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FsRtlEnterFileSystem();
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NtfsIsIrpTopLevel(Irp);
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switch (IrpContext->MajorFunction)
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{
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case IRP_MJ_QUERY_VOLUME_INFORMATION:
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Status = NtfsQueryVolumeInformation(IrpContext);
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break;
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case IRP_MJ_SET_VOLUME_INFORMATION:
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Status = NtfsSetVolumeInformation(IrpContext);
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break;
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case IRP_MJ_QUERY_INFORMATION:
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Status = NtfsQueryInformation(IrpContext);
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break;
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case IRP_MJ_SET_INFORMATION:
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if (!NtfsGlobalData->EnableWriteSupport)
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{
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DPRINT1("NTFS write-support is EXPERIMENTAL and is disabled by default!\n");
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Status = STATUS_ACCESS_DENIED;
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}
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else
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{
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Status = NtfsSetInformation(IrpContext);
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}
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break;
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case IRP_MJ_DIRECTORY_CONTROL:
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Status = NtfsDirectoryControl(IrpContext);
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break;
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case IRP_MJ_READ:
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Status = NtfsRead(IrpContext);
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break;
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case IRP_MJ_DEVICE_CONTROL:
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Status = NtfsDeviceControl(IrpContext);
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break;
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case IRP_MJ_WRITE:
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if (!NtfsGlobalData->EnableWriteSupport)
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{
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DPRINT1("NTFS write-support is EXPERIMENTAL and is disabled by default!\n");
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Status = STATUS_ACCESS_DENIED;
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}
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else
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{
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Status = NtfsWrite(IrpContext);
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}
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break;
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case IRP_MJ_CLOSE:
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Status = NtfsClose(IrpContext);
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break;
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case IRP_MJ_CLEANUP:
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Status = NtfsCleanup(IrpContext);
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break;
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case IRP_MJ_CREATE:
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Status = NtfsCreate(IrpContext);
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break;
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case IRP_MJ_FILE_SYSTEM_CONTROL:
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Status = NtfsFileSystemControl(IrpContext);
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break;
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}
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ASSERT((!(IrpContext->Flags & IRPCONTEXT_COMPLETE) && !(IrpContext->Flags & IRPCONTEXT_QUEUE)) ||
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((IrpContext->Flags & IRPCONTEXT_COMPLETE) && !(IrpContext->Flags & IRPCONTEXT_QUEUE)) ||
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(!(IrpContext->Flags & IRPCONTEXT_COMPLETE) && (IrpContext->Flags & IRPCONTEXT_QUEUE)));
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if (IrpContext->Flags & IRPCONTEXT_COMPLETE)
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{
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Irp->IoStatus.Status = Status;
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IoCompleteRequest(Irp, IrpContext->PriorityBoost);
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}
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if (IrpContext->Flags & IRPCONTEXT_QUEUE)
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{
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/* Reset our status flags before queueing the IRP */
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IrpContext->Flags |= IRPCONTEXT_COMPLETE;
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IrpContext->Flags &= ~IRPCONTEXT_QUEUE;
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Status = NtfsQueueRequest(IrpContext);
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}
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else
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{
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ExFreeToNPagedLookasideList(&NtfsGlobalData->IrpContextLookasideList, IrpContext);
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}
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IoSetTopLevelIrp(NULL);
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FsRtlExitFileSystem();
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return Status;
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}
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static
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VOID
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NTAPI
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NtfsDoRequest(PVOID IrpContext)
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{
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InterlockedDecrement(&QueueCount);
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DPRINT("NtfsDoRequest(IrpContext %p), MajorFunction %x, %d\n",
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IrpContext, ((PNTFS_IRP_CONTEXT)IrpContext)->MajorFunction, QueueCount);
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NtfsDispatch((PNTFS_IRP_CONTEXT)IrpContext);
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}
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/*
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* FUNCTION: This function manages IRP for various major functions
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* ARGUMENTS:
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* DriverObject = object describing this driver
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* Irp = IRP to be passed to internal functions
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* RETURNS: Status of I/O Request
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*/
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NTSTATUS
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NTAPI
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NtfsFsdDispatch(PDEVICE_OBJECT DeviceObject,
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PIRP Irp)
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{
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PNTFS_IRP_CONTEXT IrpContext = NULL;
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NTSTATUS Status;
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TRACE_(NTFS, "NtfsFsdDispatch()\n");
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IrpContext = NtfsAllocateIrpContext(DeviceObject, Irp);
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if (IrpContext == NULL)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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Irp->IoStatus.Status = Status;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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}
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else
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{
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Status = NtfsDispatch(IrpContext);
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}
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return Status;
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}
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