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![Amine Khaldi](/assets/img/avatar_default.png)
* Create a branch for some evul shell experiments. svn path=/branches/shell-experiments/; revision=61927
243 lines
6.9 KiB
C
243 lines
6.9 KiB
C
/*
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* ReactOS kernel
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* Copyright (C) 2002, 2003 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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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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/fs/cdfs/common.c
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* PURPOSE: CDROM (ISO 9660) filesystem driver
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* PROGRAMMER: Art Yerkes
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* Eric Kohl
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*/
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/* INCLUDES *****************************************************************/
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#include "cdfs.h"
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#define NDEBUG
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#include <debug.h>
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/* FUNCTIONS ****************************************************************/
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NTSTATUS
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CdfsReadSectors(IN PDEVICE_OBJECT DeviceObject,
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IN ULONG DiskSector,
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IN ULONG SectorCount,
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IN OUT PUCHAR Buffer,
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IN BOOLEAN Override)
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{
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PIO_STACK_LOCATION Stack;
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IO_STATUS_BLOCK IoStatus;
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LARGE_INTEGER Offset;
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ULONG BlockSize;
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KEVENT Event;
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PIRP Irp;
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NTSTATUS Status;
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BOOLEAN LastChance = FALSE;
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again:
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KeInitializeEvent(&Event,
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NotificationEvent,
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FALSE);
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Offset.u.LowPart = DiskSector << 11;
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Offset.u.HighPart = DiskSector >> 21;
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BlockSize = BLOCKSIZE * SectorCount;
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DPRINT("CdfsReadSectors(DeviceObject %p, DiskSector %u, Buffer %p)\n",
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DeviceObject, DiskSector, Buffer);
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DPRINT("Offset %I64x BlockSize %u\n",
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Offset.QuadPart,
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BlockSize);
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DPRINT("Building synchronous FSD Request...\n");
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Irp = IoBuildSynchronousFsdRequest(IRP_MJ_READ,
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DeviceObject,
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Buffer,
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BlockSize,
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&Offset,
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&Event,
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&IoStatus);
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if (Irp == NULL)
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{
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DPRINT("IoBuildSynchronousFsdRequest failed\n");
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return(STATUS_INSUFFICIENT_RESOURCES);
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}
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if (Override)
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{
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Stack = IoGetNextIrpStackLocation(Irp);
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Stack->Flags |= SL_OVERRIDE_VERIFY_VOLUME;
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}
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DPRINT("Calling IO Driver... with irp %p\n", Irp);
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Status = IoCallDriver(DeviceObject, Irp);
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DPRINT("Waiting for IO Operation for %p\n", Irp);
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if (Status == STATUS_PENDING)
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{
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DPRINT("Operation pending\n");
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KeWaitForSingleObject(&Event, Suspended, KernelMode, FALSE, NULL);
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DPRINT("Getting IO Status... for %p\n", Irp);
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Status = IoStatus.Status;
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}
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if (!NT_SUCCESS(Status))
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{
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if (Status == STATUS_VERIFY_REQUIRED)
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{
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PDEVICE_OBJECT DeviceToVerify;
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DeviceToVerify = IoGetDeviceToVerify(PsGetCurrentThread());
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IoSetDeviceToVerify(PsGetCurrentThread(), NULL);
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Status = IoVerifyVolume(DeviceToVerify, FALSE);
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if (NT_SUCCESS(Status) && !LastChance)
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{
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DPRINT("Volume verify succeeded; trying request again\n");
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LastChance = TRUE;
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goto again;
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}
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else if (NT_SUCCESS(Status))
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{
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DPRINT1("Failed to read after successful verify, aborting\n");
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Status = STATUS_DEVICE_NOT_READY;
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}
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else
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{
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DPRINT1("IoVerifyVolume() failed (Status %lx)\n", Status);
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}
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}
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DPRINT("CdfsReadSectors() failed (Status %x)\n", Status);
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DPRINT("(DeviceObject %p, DiskSector %u, Buffer %p, Offset 0x%I64x)\n",
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DeviceObject, DiskSector, Buffer,
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Offset.QuadPart);
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return(Status);
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}
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DPRINT("Block request succeeded for %p\n", Irp);
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return(STATUS_SUCCESS);
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}
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NTSTATUS
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CdfsDeviceIoControl (IN PDEVICE_OBJECT DeviceObject,
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IN ULONG CtlCode,
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IN PVOID InputBuffer,
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IN ULONG InputBufferSize,
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IN OUT PVOID OutputBuffer,
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IN OUT PULONG OutputBufferSize,
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IN BOOLEAN Override)
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{
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PIO_STACK_LOCATION Stack;
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IO_STATUS_BLOCK IoStatus;
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KEVENT Event;
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PIRP Irp;
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NTSTATUS Status;
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BOOLEAN LastChance = FALSE;
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DPRINT("CdfsDeviceIoControl(DeviceObject %p, CtlCode %u, "
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"InputBuffer %p, InputBufferSize %u, OutputBuffer %p, "
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"POutputBufferSize %p (%x)\n", DeviceObject, CtlCode,
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InputBuffer, InputBufferSize, OutputBuffer, OutputBufferSize,
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OutputBufferSize ? *OutputBufferSize : 0);
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again:
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KeInitializeEvent (&Event, NotificationEvent, FALSE);
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DPRINT("Building device I/O control request ...\n");
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Irp = IoBuildDeviceIoControlRequest(CtlCode,
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DeviceObject,
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InputBuffer,
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InputBufferSize,
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OutputBuffer,
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(OutputBufferSize != NULL) ? *OutputBufferSize : 0,
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FALSE,
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&Event,
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&IoStatus);
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if (Irp == NULL)
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{
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DPRINT("IoBuildDeviceIoControlRequest failed\n");
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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if (Override)
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{
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Stack = IoGetNextIrpStackLocation(Irp);
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Stack->Flags |= SL_OVERRIDE_VERIFY_VOLUME;
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}
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DPRINT ("Calling IO Driver... with irp %p\n", Irp);
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Status = IoCallDriver(DeviceObject, Irp);
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DPRINT ("Waiting for IO Operation for %p\n", Irp);
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if (Status == STATUS_PENDING)
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{
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DPRINT ("Operation pending\n");
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KeWaitForSingleObject (&Event, Suspended, KernelMode, FALSE, NULL);
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DPRINT ("Getting IO Status... for %p\n", Irp);
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Status = IoStatus.Status;
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}
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if (OutputBufferSize != NULL)
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{
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*OutputBufferSize = IoStatus.Information;
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}
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if (Status == STATUS_VERIFY_REQUIRED)
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{
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PDEVICE_OBJECT DeviceToVerify;
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DeviceToVerify = IoGetDeviceToVerify(PsGetCurrentThread());
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IoSetDeviceToVerify(PsGetCurrentThread(), NULL);
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if (DeviceToVerify)
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{
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Status = IoVerifyVolume(DeviceToVerify, FALSE);
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DPRINT("IoVerifyVolume() returned (Status %lx)\n", Status);
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}
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if (NT_SUCCESS(Status) && !LastChance)
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{
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DPRINT1("Volume verify succeeded; trying request again\n");
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LastChance = TRUE;
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goto again;
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}
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else if (NT_SUCCESS(Status))
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{
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DPRINT1("Failed to read after successful verify, aborting\n");
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Status = STATUS_DEVICE_NOT_READY;
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}
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else
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{
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DPRINT1("IoVerifyVolume() failed (Status %lx)\n", Status);
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}
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}
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DPRINT("Returning Status %x\n", Status);
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return Status;
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}
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/* EOF */
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