+++ /dev/null
-/*
- * ReactOS kernel
- * Copyright (C) 2002, 2003 ReactOS Team
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-/*
- * COPYRIGHT: See COPYING in the top level directory
- * PROJECT: ReactOS kernel
- * FILE: drivers/filesystems/cdfs/common.c
- * PURPOSE: CDROM (ISO 9660) filesystem driver
- * PROGRAMMER: Art Yerkes
- * Eric Kohl
- */
-
-/* INCLUDES *****************************************************************/
-
-#include "cdfs.h"
-
-#define NDEBUG
-#include <debug.h>
-
-/* FUNCTIONS ****************************************************************/
-
-NTSTATUS
-CdfsReadSectors(IN PDEVICE_OBJECT DeviceObject,
- IN ULONG DiskSector,
- IN ULONG SectorCount,
- IN OUT PUCHAR Buffer,
- IN BOOLEAN Override)
-{
- PIO_STACK_LOCATION Stack;
- IO_STATUS_BLOCK IoStatus;
- LARGE_INTEGER Offset;
- ULONG BlockSize;
- KEVENT Event;
- PIRP Irp;
- NTSTATUS Status;
- BOOLEAN LastChance = FALSE;
-
-again:
- KeInitializeEvent(&Event,
- NotificationEvent,
- FALSE);
-
- Offset.u.LowPart = DiskSector << 11;
- Offset.u.HighPart = DiskSector >> 21;
-
- BlockSize = BLOCKSIZE * SectorCount;
-
- DPRINT("CdfsReadSectors(DeviceObject %p, DiskSector %u, Buffer %p)\n",
- DeviceObject, DiskSector, Buffer);
- DPRINT("Offset %I64x BlockSize %u\n",
- Offset.QuadPart,
- BlockSize);
-
- DPRINT("Building synchronous FSD Request...\n");
- Irp = IoBuildSynchronousFsdRequest(IRP_MJ_READ,
- DeviceObject,
- Buffer,
- BlockSize,
- &Offset,
- &Event,
- &IoStatus);
- if (Irp == NULL)
- {
- DPRINT("IoBuildSynchronousFsdRequest failed\n");
- return(STATUS_INSUFFICIENT_RESOURCES);
- }
-
- if (Override)
- {
- Stack = IoGetNextIrpStackLocation(Irp);
- Stack->Flags |= SL_OVERRIDE_VERIFY_VOLUME;
- }
-
- DPRINT("Calling IO Driver... with irp %p\n", Irp);
- Status = IoCallDriver(DeviceObject, Irp);
-
- DPRINT("Waiting for IO Operation for %p\n", Irp);
- if (Status == STATUS_PENDING)
- {
- DPRINT("Operation pending\n");
- KeWaitForSingleObject(&Event, Suspended, KernelMode, FALSE, NULL);
- DPRINT("Getting IO Status... for %p\n", Irp);
- Status = IoStatus.Status;
- }
-
- if (!NT_SUCCESS(Status))
- {
- if (Status == STATUS_VERIFY_REQUIRED)
- {
- PDEVICE_OBJECT DeviceToVerify;
-
- DeviceToVerify = IoGetDeviceToVerify(PsGetCurrentThread());
- IoSetDeviceToVerify(PsGetCurrentThread(), NULL);
-
- Status = IoVerifyVolume(DeviceToVerify, FALSE);
-
- if (NT_SUCCESS(Status) && !LastChance)
- {
- DPRINT("Volume verify succeeded; trying request again\n");
- LastChance = TRUE;
- goto again;
- }
- else if (NT_SUCCESS(Status))
- {
- DPRINT1("Failed to read after successful verify, aborting\n");
- Status = STATUS_DEVICE_NOT_READY;
- }
- else
- {
- DPRINT1("IoVerifyVolume() failed (Status %lx)\n", Status);
- }
- }
-
- DPRINT("CdfsReadSectors() failed (Status %x)\n", Status);
- DPRINT("(DeviceObject %p, DiskSector %u, Buffer %p, Offset 0x%I64x)\n",
- DeviceObject, DiskSector, Buffer,
- Offset.QuadPart);
- return(Status);
- }
-
- DPRINT("Block request succeeded for %p\n", Irp);
-
- return(STATUS_SUCCESS);
-}
-
-
-NTSTATUS
-CdfsDeviceIoControl (IN PDEVICE_OBJECT DeviceObject,
- IN ULONG CtlCode,
- IN PVOID InputBuffer,
- IN ULONG InputBufferSize,
- IN OUT PVOID OutputBuffer,
- IN OUT PULONG OutputBufferSize,
- IN BOOLEAN Override)
-{
- PIO_STACK_LOCATION Stack;
- IO_STATUS_BLOCK IoStatus;
- KEVENT Event;
- PIRP Irp;
- NTSTATUS Status;
- BOOLEAN LastChance = FALSE;
-
- DPRINT("CdfsDeviceIoControl(DeviceObject %p, CtlCode %u, "
- "InputBuffer %p, InputBufferSize %u, OutputBuffer %p, "
- "POutputBufferSize %p (%x)\n", DeviceObject, CtlCode,
- InputBuffer, InputBufferSize, OutputBuffer, OutputBufferSize,
- OutputBufferSize ? *OutputBufferSize : 0);
-
-again:
- KeInitializeEvent (&Event, NotificationEvent, FALSE);
-
- DPRINT("Building device I/O control request ...\n");
- Irp = IoBuildDeviceIoControlRequest(CtlCode,
- DeviceObject,
- InputBuffer,
- InputBufferSize,
- OutputBuffer,
- (OutputBufferSize != NULL) ? *OutputBufferSize : 0,
- FALSE,
- &Event,
- &IoStatus);
- if (Irp == NULL)
- {
- DPRINT("IoBuildDeviceIoControlRequest failed\n");
- return STATUS_INSUFFICIENT_RESOURCES;
- }
-
- if (Override)
- {
- Stack = IoGetNextIrpStackLocation(Irp);
- Stack->Flags |= SL_OVERRIDE_VERIFY_VOLUME;
- }
-
- DPRINT ("Calling IO Driver... with irp %p\n", Irp);
- Status = IoCallDriver(DeviceObject, Irp);
-
- DPRINT ("Waiting for IO Operation for %p\n", Irp);
- if (Status == STATUS_PENDING)
- {
- DPRINT ("Operation pending\n");
- KeWaitForSingleObject (&Event, Suspended, KernelMode, FALSE, NULL);
- DPRINT ("Getting IO Status... for %p\n", Irp);
-
- Status = IoStatus.Status;
- }
-
- if (OutputBufferSize != NULL)
- {
- *OutputBufferSize = IoStatus.Information;
- }
-
- if (Status == STATUS_VERIFY_REQUIRED)
- {
- PDEVICE_OBJECT DeviceToVerify;
-
- DeviceToVerify = IoGetDeviceToVerify(PsGetCurrentThread());
- IoSetDeviceToVerify(PsGetCurrentThread(), NULL);
-
- if (DeviceToVerify)
- {
- Status = IoVerifyVolume(DeviceToVerify, FALSE);
- DPRINT("IoVerifyVolume() returned (Status %lx)\n", Status);
- }
-
- if (NT_SUCCESS(Status) && !LastChance)
- {
- DPRINT1("Volume verify succeeded; trying request again\n");
- LastChance = TRUE;
- goto again;
- }
- else if (NT_SUCCESS(Status))
- {
- DPRINT1("Failed to read after successful verify, aborting\n");
- Status = STATUS_DEVICE_NOT_READY;
- }
- else
- {
- DPRINT1("IoVerifyVolume() failed (Status %lx)\n", Status);
- }
- }
-
- DPRINT("Returning Status %x\n", Status);
-
- return Status;
-}
-
-/* EOF */
projects / reactos.git / blobdiff