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reactos/drivers/filesystems/cdfs/finfo.c

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/*
* ReactOS kernel
* Copyright (C) 2002, 2004 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/finfo.c
* PURPOSE: CDROM (ISO 9660) filesystem driver
* PROGRAMMER: Art Yerkes
* Eric Kohl
* UPDATE HISTORY:
*/
/* INCLUDES *****************************************************************/
#include "cdfs.h"
#define NDEBUG
#include <debug.h>
/* FUNCTIONS ****************************************************************/
/*
* FUNCTION: Retrieve the standard file information
*/
static NTSTATUS
CdfsGetStandardInformation(PFCB Fcb,
PDEVICE_OBJECT DeviceObject,
PFILE_STANDARD_INFORMATION StandardInfo,
PULONG BufferLength)
{
DPRINT("CdfsGetStandardInformation() called\n");
UNREFERENCED_PARAMETER(DeviceObject);
if (*BufferLength < sizeof(FILE_STANDARD_INFORMATION))
return STATUS_BUFFER_OVERFLOW;
/* PRECONDITION */
ASSERT(StandardInfo != NULL);
ASSERT(Fcb != NULL);
RtlZeroMemory(StandardInfo,
sizeof(FILE_STANDARD_INFORMATION));
if (CdfsFCBIsDirectory(Fcb))
{
StandardInfo->AllocationSize.QuadPart = 0LL;
StandardInfo->EndOfFile.QuadPart = 0LL;
StandardInfo->Directory = TRUE;
}
else
{
StandardInfo->AllocationSize = Fcb->RFCB.AllocationSize;
StandardInfo->EndOfFile = Fcb->RFCB.FileSize;
StandardInfo->Directory = FALSE;
}
StandardInfo->NumberOfLinks = 0;
StandardInfo->DeletePending = FALSE;
*BufferLength -= sizeof(FILE_STANDARD_INFORMATION);
return(STATUS_SUCCESS);
}
/*
* FUNCTION: Retrieve the file position information
*/
static NTSTATUS
CdfsGetPositionInformation(PFILE_OBJECT FileObject,
PFILE_POSITION_INFORMATION PositionInfo,
PULONG BufferLength)
{
DPRINT("CdfsGetPositionInformation() called\n");
if (*BufferLength < sizeof(FILE_POSITION_INFORMATION))
return STATUS_BUFFER_OVERFLOW;
PositionInfo->CurrentByteOffset.QuadPart =
FileObject->CurrentByteOffset.QuadPart;
DPRINT("Getting position %I64x\n",
PositionInfo->CurrentByteOffset.QuadPart);
*BufferLength -= sizeof(FILE_POSITION_INFORMATION);
return(STATUS_SUCCESS);
}
/*
* FUNCTION: Retrieve the basic file information
*/
static NTSTATUS
CdfsGetBasicInformation(PFILE_OBJECT FileObject,
PFCB Fcb,
PDEVICE_OBJECT DeviceObject,
PFILE_BASIC_INFORMATION BasicInfo,
PULONG BufferLength)
{
DPRINT("CdfsGetBasicInformation() called\n");
UNREFERENCED_PARAMETER(FileObject);
UNREFERENCED_PARAMETER(DeviceObject);
if (*BufferLength < sizeof(FILE_BASIC_INFORMATION))
return STATUS_BUFFER_OVERFLOW;
CdfsDateTimeToSystemTime(Fcb,
&BasicInfo->CreationTime);
CdfsDateTimeToSystemTime(Fcb,
&BasicInfo->LastAccessTime);
CdfsDateTimeToSystemTime(Fcb,
&BasicInfo->LastWriteTime);
CdfsDateTimeToSystemTime(Fcb,
&BasicInfo->ChangeTime);
CdfsFileFlagsToAttributes(Fcb,
&BasicInfo->FileAttributes);
*BufferLength -= sizeof(FILE_BASIC_INFORMATION);
return(STATUS_SUCCESS);
}
/*
* FUNCTION: Retrieve the file name information
*/
static NTSTATUS
CdfsGetNameInformation(PFILE_OBJECT FileObject,
PFCB Fcb,
PDEVICE_OBJECT DeviceObject,
PFILE_NAME_INFORMATION NameInfo,
PULONG BufferLength)
{
ULONG NameLength;
ULONG BytesToCopy;
DPRINT("CdfsGetNameInformation() called\n");
ASSERT(NameInfo != NULL);
ASSERT(Fcb != NULL);
UNREFERENCED_PARAMETER(FileObject);
UNREFERENCED_PARAMETER(DeviceObject);
/* If buffer can't hold at least the file name length, bail out */
if (*BufferLength < (ULONG)FIELD_OFFSET(FILE_NAME_INFORMATION, FileName[0]))
return STATUS_BUFFER_OVERFLOW;
/* Calculate file name length in bytes */
NameLength = Fcb->PathName.Length;
NameInfo->FileNameLength = NameLength;
/* Calculate amount of bytes to copy not to overflow the buffer */
BytesToCopy = min(NameLength,
*BufferLength - FIELD_OFFSET(FILE_NAME_INFORMATION, FileName[0]));
/* Fill in the bytes */
RtlCopyMemory(NameInfo->FileName, Fcb->PathName.Buffer, BytesToCopy);
/* Check if we could write more but are not able to */
if (*BufferLength < NameLength + FIELD_OFFSET(FILE_NAME_INFORMATION, FileName[0]))
{
/* Return number of bytes written */
*BufferLength -= FIELD_OFFSET(FILE_NAME_INFORMATION, FileName[0]) + BytesToCopy;
return STATUS_BUFFER_OVERFLOW;
}
/* We filled up as many bytes, as needed */
*BufferLength -= (FIELD_OFFSET(FILE_NAME_INFORMATION, FileName[0]) + NameLength);
return STATUS_SUCCESS;
}
/*
* FUNCTION: Retrieve the internal file information
*/
static NTSTATUS
CdfsGetInternalInformation(PFCB Fcb,
PFILE_INTERNAL_INFORMATION InternalInfo,
PULONG BufferLength)
{
DPRINT("CdfsGetInternalInformation() called\n");
ASSERT(InternalInfo);
ASSERT(Fcb);
if (*BufferLength < sizeof(FILE_INTERNAL_INFORMATION))
return(STATUS_BUFFER_OVERFLOW);
InternalInfo->IndexNumber.QuadPart = Fcb->IndexNumber.QuadPart;
*BufferLength -= sizeof(FILE_INTERNAL_INFORMATION);
return(STATUS_SUCCESS);
}
/*
* FUNCTION: Retrieve the file network open information
*/
static NTSTATUS
CdfsGetNetworkOpenInformation(PFCB Fcb,
PFILE_NETWORK_OPEN_INFORMATION NetworkInfo,
PULONG BufferLength)
{
ASSERT(NetworkInfo);
ASSERT(Fcb);
if (*BufferLength < sizeof(FILE_NETWORK_OPEN_INFORMATION))
return(STATUS_BUFFER_OVERFLOW);
CdfsDateTimeToSystemTime(Fcb,
&NetworkInfo->CreationTime);
CdfsDateTimeToSystemTime(Fcb,
&NetworkInfo->LastAccessTime);
CdfsDateTimeToSystemTime(Fcb,
&NetworkInfo->LastWriteTime);
CdfsDateTimeToSystemTime(Fcb,
&NetworkInfo->ChangeTime);
if (CdfsFCBIsDirectory(Fcb))
{
NetworkInfo->AllocationSize.QuadPart = 0LL;
NetworkInfo->EndOfFile.QuadPart = 0LL;
}
else
{
NetworkInfo->AllocationSize = Fcb->RFCB.AllocationSize;
NetworkInfo->EndOfFile = Fcb->RFCB.FileSize;
}
CdfsFileFlagsToAttributes(Fcb,
&NetworkInfo->FileAttributes);
*BufferLength -= sizeof(FILE_NETWORK_OPEN_INFORMATION);
return(STATUS_SUCCESS);
}
/*
* FUNCTION: Retrieve all file information
*/
static NTSTATUS
CdfsGetAllInformation(PFILE_OBJECT FileObject,
PFCB Fcb,
PFILE_ALL_INFORMATION Info,
PULONG BufferLength)
{
ULONG NameLength;
ASSERT(Info);
ASSERT(Fcb);
NameLength = Fcb->PathName.Length;
if (*BufferLength < sizeof(FILE_ALL_INFORMATION) + NameLength)
return(STATUS_BUFFER_OVERFLOW);
/* Basic Information */
CdfsDateTimeToSystemTime(Fcb,
&Info->BasicInformation.CreationTime);
CdfsDateTimeToSystemTime(Fcb,
&Info->BasicInformation.LastAccessTime);
CdfsDateTimeToSystemTime(Fcb,
&Info->BasicInformation.LastWriteTime);
CdfsDateTimeToSystemTime(Fcb,
&Info->BasicInformation.ChangeTime);
CdfsFileFlagsToAttributes(Fcb,
&Info->BasicInformation.FileAttributes);
/* Standard Information */
if (CdfsFCBIsDirectory(Fcb))
{
Info->StandardInformation.AllocationSize.QuadPart = 0LL;
Info->StandardInformation.EndOfFile.QuadPart = 0LL;
Info->StandardInformation.Directory = TRUE;
}
else
{
Info->StandardInformation.AllocationSize = Fcb->RFCB.AllocationSize;
Info->StandardInformation.EndOfFile = Fcb->RFCB.FileSize;
Info->StandardInformation.Directory = FALSE;
}
Info->StandardInformation.NumberOfLinks = 0;
Info->StandardInformation.DeletePending = FALSE;
/* Internal Information */
Info->InternalInformation.IndexNumber.QuadPart = Fcb->IndexNumber.QuadPart;
/* EA Information */
Info->EaInformation.EaSize = 0;
/* Access Information */
/* The IO-Manager adds this information */
/* Position Information */
Info->PositionInformation.CurrentByteOffset.QuadPart = FileObject->CurrentByteOffset.QuadPart;
/* Mode Information */
/* The IO-Manager adds this information */
/* Alignment Information */
/* The IO-Manager adds this information */
/* Name Information */
Info->NameInformation.FileNameLength = NameLength;
RtlCopyMemory(Info->NameInformation.FileName,
Fcb->PathName.Buffer,
NameLength + sizeof(WCHAR));
*BufferLength -= (sizeof(FILE_ALL_INFORMATION) + NameLength + sizeof(WCHAR));
return STATUS_SUCCESS;
}
/*
* FUNCTION: Retrieve the specified file information
*/
NTSTATUS NTAPI
CdfsQueryInformation(
PCDFS_IRP_CONTEXT IrpContext)
{
PIRP Irp;
PDEVICE_OBJECT DeviceObject;
FILE_INFORMATION_CLASS FileInformationClass;
PIO_STACK_LOCATION Stack;
PFILE_OBJECT FileObject;
PFCB Fcb;
PVOID SystemBuffer;
ULONG BufferLength;
NTSTATUS Status = STATUS_SUCCESS;
DPRINT("CdfsQueryInformation() called\n");
Irp = IrpContext->Irp;
DeviceObject = IrpContext->DeviceObject;
Stack = IrpContext->Stack;
FileInformationClass = Stack->Parameters.QueryFile.FileInformationClass;
FileObject = Stack->FileObject;
Fcb = FileObject->FsContext;
SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
BufferLength = Stack->Parameters.QueryFile.Length;
switch (FileInformationClass)
{
case FileStandardInformation:
Status = CdfsGetStandardInformation(Fcb,
DeviceObject,
SystemBuffer,
&BufferLength);
break;
case FilePositionInformation:
Status = CdfsGetPositionInformation(FileObject,
SystemBuffer,
&BufferLength);
break;
case FileBasicInformation:
Status = CdfsGetBasicInformation(FileObject,
Fcb,
DeviceObject,
SystemBuffer,
&BufferLength);
break;
case FileNameInformation:
Status = CdfsGetNameInformation(FileObject,
Fcb,
DeviceObject,
SystemBuffer,
&BufferLength);
break;
case FileInternalInformation:
Status = CdfsGetInternalInformation(Fcb,
SystemBuffer,
&BufferLength);
break;
case FileNetworkOpenInformation:
Status = CdfsGetNetworkOpenInformation(Fcb,
SystemBuffer,
&BufferLength);
break;
case FileAllInformation:
Status = CdfsGetAllInformation(FileObject,
Fcb,
SystemBuffer,
&BufferLength);
break;
case FileAlternateNameInformation:
Status = STATUS_NOT_IMPLEMENTED;
break;
default:
DPRINT("Unimplemented information class %x\n", FileInformationClass);
Status = STATUS_INVALID_PARAMETER;
break;
}
if (NT_SUCCESS(Status) || Status == STATUS_BUFFER_OVERFLOW)
Irp->IoStatus.Information =
Stack->Parameters.QueryFile.Length - BufferLength;
else
Irp->IoStatus.Information = 0;
return(Status);
}
/*
* FUNCTION: Set the file position information
*/
static NTSTATUS
CdfsSetPositionInformation(PFILE_OBJECT FileObject,
PFILE_POSITION_INFORMATION PositionInfo)
{
DPRINT ("CdfsSetPositionInformation()\n");
DPRINT ("PositionInfo %p\n", PositionInfo);
DPRINT ("Setting position %I64d\n", PositionInfo->CurrentByteOffset.QuadPart);
FileObject->CurrentByteOffset.QuadPart =
PositionInfo->CurrentByteOffset.QuadPart;
return STATUS_SUCCESS;
}
/*
* FUNCTION: Set the specified file information
*/
NTSTATUS NTAPI
CdfsSetInformation(
PCDFS_IRP_CONTEXT IrpContext)
{
PIRP Irp;
FILE_INFORMATION_CLASS FileInformationClass;
PIO_STACK_LOCATION Stack;
PFILE_OBJECT FileObject;
PVOID SystemBuffer;
NTSTATUS Status = STATUS_SUCCESS;
DPRINT("CdfsSetInformation() called\n");
Irp = IrpContext->Irp;
Stack = IrpContext->Stack;
FileInformationClass = Stack->Parameters.SetFile.FileInformationClass;
FileObject = Stack->FileObject;
SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
switch (FileInformationClass)
{
case FilePositionInformation:
Status = CdfsSetPositionInformation(FileObject,
SystemBuffer);
break;
case FileBasicInformation:
case FileRenameInformation:
Status = STATUS_NOT_IMPLEMENTED;
break;
default:
Status = STATUS_NOT_SUPPORTED;
break;
}
Irp->IoStatus.Information = 0;
return Status;
}
/* EOF */
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