mirror of
https://github.com/reactos/reactos.git
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608 lines
18 KiB
C
608 lines
18 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/fsctl.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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static __inline
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int msf_to_lba (UCHAR m, UCHAR s, UCHAR f)
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{
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return (((m * 60) + s) * 75 + f) - 150;
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}
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static VOID
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CdfsGetPVDData(PUCHAR Buffer,
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PCDINFO CdInfo)
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{
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PPVD Pvd;
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ULONG i;
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PUCHAR pc;
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PWCHAR pw;
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union
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{
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ULONG Value;
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UCHAR Part[4];
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} Serial;
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Pvd = (PPVD)Buffer;
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/* Calculate the volume serial number */
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Serial.Value = 0;
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for (i = 0; i < 2048; i += 4)
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{
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/* DON'T optimize this to ULONG!!! (breaks overflow) */
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Serial.Part[0] += Buffer[i+3];
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Serial.Part[1] += Buffer[i+2];
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Serial.Part[2] += Buffer[i+1];
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Serial.Part[3] += Buffer[i+0];
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}
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CdInfo->SerialNumber = Serial.Value;
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/* Extract the volume label */
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pc = Pvd->VolumeId;
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pw = CdInfo->VolumeLabel;
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for (i = 0; i < (MAXIMUM_VOLUME_LABEL_LENGTH / sizeof(WCHAR)) - 1; i++)
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{
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*pw++ = (WCHAR)*pc++;
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}
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*pw = 0;
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/* Trim trailing spaces */
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while (pw > CdInfo->VolumeLabel)
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{
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if (*--pw != ' ') break;
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/* Remove the space */
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*pw = '\0';
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/* Decrease size */
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i--;
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}
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CdInfo->VolumeLabelLength = i * sizeof(WCHAR);
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CdInfo->VolumeSpaceSize = Pvd->VolumeSpaceSizeL;
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CdInfo->RootStart = Pvd->RootDirRecord.ExtentLocationL;
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CdInfo->RootSize = Pvd->RootDirRecord.DataLengthL;
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DPRINT("VolumeSerial: %08lx\n", CdInfo->SerialNumber);
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DPRINT("VolumeLabel: '%S'\n", CdInfo->VolumeLabel);
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DPRINT("VolumeLabelLength: %lu\n", CdInfo->VolumeLabelLength);
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DPRINT("VolumeSize: %lu\n", Pvd->VolumeSpaceSizeL);
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DPRINT("RootStart: %lu\n", Pvd->RootDirRecord.ExtentLocationL);
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DPRINT("RootSize: %lu\n", Pvd->RootDirRecord.DataLengthL);
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DPRINT("PathTableSize: %lu\n", Pvd->PathTableSizeL);
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DPRINT("PathTablePos: %lu\n", Pvd->LPathTablePos);
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DPRINT("OptPathTablePos: %lu\n", Pvd->LOptPathTablePos);
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#if 0
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DbgPrint("******** PVD **********\n");
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DbgPrint("VdType: %d\n", Pvd->VdType);
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DbgPrint("StandardId: '%.*s'\n", 5, Pvd->StandardId);
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DbgPrint("VdVersion: %d\n", Pvd->VdVersion);
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DbgPrint("SystemId: '%.*s'\n", 32, Pvd->SystemId);
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DbgPrint("VolumeId: '%.*s'\n", 32, Pvd->VolumeId);
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DbgPrint("VolumeSpaceSizeL: %d (%x)\n", Pvd->VolumeSpaceSizeL, Pvd->VolumeSpaceSizeL);
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DbgPrint("VolumeSpaceSizeM: %d (%x)\n", Pvd->VolumeSpaceSizeM, Pvd->VolumeSpaceSizeM);
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DbgPrint("VolumeSetSize: %d (%x)\n", Pvd->VolumeSequenceNumber, Pvd->VolumeSequenceNumber);
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DbgPrint("VolumeSequenceNumber: %d (%x)\n", Pvd->VolumeSequenceNumber, Pvd->VolumeSequenceNumber);
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DbgPrint("LogicalBlockSize: %d (%x)\n", Pvd->LogicalBlockSize, Pvd->LogicalBlockSize);
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DbgPrint("PathTableSizeL: %d (%x)\n", Pvd->PathTableSizeL, Pvd->PathTableSizeL);
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DbgPrint("PathTableSizeM: %d (%x)\n", Pvd->PathTableSizeM, Pvd->PathTableSizeM);
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DbgPrint("LPathTablePos: %d (%x)\n", Pvd->LPathTablePos, Pvd->LPathTablePos);
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DbgPrint("LOptPathTablePos: %d (%x)\n", Pvd->LOptPathTablePos, Pvd->LOptPathTablePos);
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DbgPrint("MPathTablePos: %d (%x)\n", Pvd->MPathTablePos, Pvd->MPathTablePos);
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DbgPrint("MOptPathTablePos: %d (%x)\n", Pvd->MOptPathTablePos, Pvd->MOptPathTablePos);
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DbgPrint("VolumeSetIdentifier: '%.*s'\n", 128, Pvd->VolumeSetIdentifier);
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DbgPrint("PublisherIdentifier: '%.*s'\n", 128, Pvd->PublisherIdentifier);
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DbgPrint("******** Root *********\n");
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DbgPrint("RecordLength: %d\n", Pvd->RootDirRecord.RecordLength);
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DbgPrint("ExtAttrRecordLength: %d\n", Pvd->RootDirRecord.ExtAttrRecordLength);
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DbgPrint("ExtentLocationL: %d\n", Pvd->RootDirRecord.ExtentLocationL);
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DbgPrint("DataLengthL: %d\n", Pvd->RootDirRecord.DataLengthL);
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DbgPrint("Year: %d\n", Pvd->RootDirRecord.Year);
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DbgPrint("Month: %d\n", Pvd->RootDirRecord.Month);
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DbgPrint("Day: %d\n", Pvd->RootDirRecord.Day);
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DbgPrint("Hour: %d\n", Pvd->RootDirRecord.Hour);
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DbgPrint("Minute: %d\n", Pvd->RootDirRecord.Minute);
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DbgPrint("Second: %d\n", Pvd->RootDirRecord.Second);
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DbgPrint("TimeZone: %d\n", Pvd->RootDirRecord.TimeZone);
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DbgPrint("FileFlags: %d\n", Pvd->RootDirRecord.FileFlags);
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DbgPrint("FileUnitSize: %d\n", Pvd->RootDirRecord.FileUnitSize);
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DbgPrint("InterleaveGapSize: %d\n", Pvd->RootDirRecord.InterleaveGapSize);
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DbgPrint("VolumeSequenceNumber: %d\n", Pvd->RootDirRecord.VolumeSequenceNumber);
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DbgPrint("FileIdLength: %d\n", Pvd->RootDirRecord.FileIdLength);
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DbgPrint("FileId: '%.*s'\n", Pvd->RootDirRecord.FileId);
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DbgPrint("***********************\n");
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#endif
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}
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static VOID
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CdfsGetSVDData(PUCHAR Buffer,
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PCDINFO CdInfo)
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{
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PSVD Svd;
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ULONG JolietLevel = 0;
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Svd = (PSVD)Buffer;
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DPRINT("EscapeSequences: '%.32s'\n", Svd->EscapeSequences);
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if (strncmp((PCHAR)Svd->EscapeSequences, "%/@", 3) == 0)
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{
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DPRINT("Joliet extension found (UCS-2 Level 1)\n");
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JolietLevel = 1;
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}
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else if (strncmp((PCHAR)Svd->EscapeSequences, "%/C", 3) == 0)
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{
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DPRINT("Joliet extension found (UCS-2 Level 2)\n");
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JolietLevel = 2;
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}
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else if (strncmp((PCHAR)Svd->EscapeSequences, "%/E", 3) == 0)
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{
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DPRINT("Joliet extension found (UCS-2 Level 3)\n");
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JolietLevel = 3;
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}
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CdInfo->JolietLevel = JolietLevel;
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if (JolietLevel != 0)
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{
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CdInfo->RootStart = Svd->RootDirRecord.ExtentLocationL;
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CdInfo->RootSize = Svd->RootDirRecord.DataLengthL;
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DPRINT("RootStart: %lu\n", Svd->RootDirRecord.ExtentLocationL);
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DPRINT("RootSize: %lu\n", Svd->RootDirRecord.DataLengthL);
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}
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}
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static NTSTATUS
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CdfsGetVolumeData(PDEVICE_OBJECT DeviceObject,
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PCDINFO CdInfo)
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{
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PUCHAR Buffer;
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NTSTATUS Status;
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ULONG Sector;
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PVD_HEADER VdHeader;
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ULONG Size;
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ULONG Offset;
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ULONG i;
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struct
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{
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UCHAR Length[2];
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UCHAR FirstSession;
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UCHAR LastSession;
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TRACK_DATA TrackData;
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}
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Toc;
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DPRINT("CdfsGetVolumeData\n");
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Buffer = ExAllocatePool(NonPagedPool,
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CDFS_BASIC_SECTOR);
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if (Buffer == NULL)
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return STATUS_INSUFFICIENT_RESOURCES;
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Size = sizeof(Toc);
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Status = CdfsDeviceIoControl(DeviceObject,
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IOCTL_CDROM_GET_LAST_SESSION,
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NULL,
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0,
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&Toc,
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&Size,
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TRUE);
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if (!NT_SUCCESS(Status))
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{
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ExFreePool(Buffer);
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return Status;
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}
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DPRINT("FirstSession %d, LastSession %d, FirstTrack %d\n",
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Toc.FirstSession, Toc.LastSession, Toc.TrackData.TrackNumber);
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Offset = 0;
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for (i = 0; i < 4; i++)
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{
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Offset = (Offset << 8) + Toc.TrackData.Address[i];
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}
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CdInfo->VolumeOffset = Offset;
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DPRINT("Offset of first track in last session %d\n", Offset);
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CdInfo->JolietLevel = 0;
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VdHeader = (PVD_HEADER)Buffer;
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Buffer[0] = 0;
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for (Sector = CDFS_PRIMARY_DESCRIPTOR_LOCATION; Sector < 100 && Buffer[0] != 255; Sector++)
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{
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/* Read the Primary Volume Descriptor (PVD) */
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Status = CdfsReadSectors (DeviceObject,
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Sector + Offset,
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1,
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Buffer,
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TRUE);
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if (!NT_SUCCESS(Status))
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{
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ExFreePool(Buffer);
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return Status;
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}
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if (Sector == CDFS_PRIMARY_DESCRIPTOR_LOCATION)
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{
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DPRINT("CD-identifier: [%.5s]\n", Buffer + 1);
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if (Buffer[0] != 1 || Buffer[1] != 'C' || Buffer[2] != 'D' ||
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Buffer[3] != '0' || Buffer[4] != '0' || Buffer[5] != '1')
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{
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ExFreePool(Buffer);
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return STATUS_UNRECOGNIZED_VOLUME;
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}
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}
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switch (VdHeader->VdType)
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{
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case 0:
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DPRINT("BootVolumeDescriptor found!\n");
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break;
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case 1:
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DPRINT("PrimaryVolumeDescriptor found!\n");
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CdfsGetPVDData(Buffer, CdInfo);
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break;
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case 2:
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DPRINT("SupplementaryVolumeDescriptor found!\n");
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CdfsGetSVDData(Buffer, CdInfo);
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break;
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case 3:
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DPRINT("VolumePartitionDescriptor found!\n");
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break;
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case 255:
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DPRINT("VolumeDescriptorSetTerminator found!\n");
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break;
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default:
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DPRINT1("Unknown volume descriptor type %u found!\n", VdHeader->VdType);
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break;
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}
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}
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ExFreePool(Buffer);
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return(STATUS_SUCCESS);
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}
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static NTSTATUS
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CdfsMountVolume(PDEVICE_OBJECT DeviceObject,
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PIRP Irp)
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{
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PDEVICE_EXTENSION DeviceExt = NULL;
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PDEVICE_OBJECT NewDeviceObject = NULL;
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PDEVICE_OBJECT DeviceToMount;
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PIO_STACK_LOCATION Stack;
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PFCB Fcb = NULL;
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PCCB Ccb = NULL;
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PVPB Vpb;
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NTSTATUS Status;
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CDINFO CdInfo;
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DPRINT("CdfsMountVolume() called\n");
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if (DeviceObject != CdfsGlobalData->DeviceObject)
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{
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Status = STATUS_INVALID_DEVICE_REQUEST;
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goto ByeBye;
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}
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Stack = IoGetCurrentIrpStackLocation(Irp);
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DeviceToMount = Stack->Parameters.MountVolume.DeviceObject;
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Vpb = Stack->Parameters.MountVolume.Vpb;
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Status = CdfsGetVolumeData(DeviceToMount, &CdInfo);
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if (!NT_SUCCESS(Status))
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{
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goto ByeBye;
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}
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Status = IoCreateDevice(CdfsGlobalData->DriverObject,
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sizeof(DEVICE_EXTENSION),
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NULL,
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FILE_DEVICE_CD_ROM_FILE_SYSTEM,
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DeviceToMount->Characteristics,
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FALSE,
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&NewDeviceObject);
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if (!NT_SUCCESS(Status))
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goto ByeBye;
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NewDeviceObject->Flags = NewDeviceObject->Flags | DO_DIRECT_IO;
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NewDeviceObject->Flags &= ~DO_VERIFY_VOLUME;
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DeviceExt = (PVOID)NewDeviceObject->DeviceExtension;
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RtlZeroMemory(DeviceExt,
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sizeof(DEVICE_EXTENSION));
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Vpb->SerialNumber = CdInfo.SerialNumber;
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Vpb->VolumeLabelLength = CdInfo.VolumeLabelLength;
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RtlCopyMemory(Vpb->VolumeLabel, CdInfo.VolumeLabel, CdInfo.VolumeLabelLength);
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RtlCopyMemory(&DeviceExt->CdInfo, &CdInfo, sizeof(CDINFO));
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NewDeviceObject->Vpb = DeviceToMount->Vpb;
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DeviceExt->VolumeDevice = NewDeviceObject;
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DeviceExt->StorageDevice = DeviceToMount;
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DeviceExt->StorageDevice->Vpb->DeviceObject = NewDeviceObject;
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DeviceExt->StorageDevice->Vpb->RealDevice = DeviceExt->StorageDevice;
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DeviceExt->StorageDevice->Vpb->Flags |= VPB_MOUNTED;
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NewDeviceObject->StackSize = DeviceExt->StorageDevice->StackSize + 1;
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NewDeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
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/* Close (and cleanup) might be called from IoCreateStreamFileObject
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* but we use this resource from CdfsCleanup, therefore it should be
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* initialized no later than this. */
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ExInitializeResourceLite(&DeviceExt->DirResource);
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DeviceExt->StreamFileObject = IoCreateStreamFileObject(NULL,
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DeviceExt->StorageDevice);
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Fcb = CdfsCreateFCB(NULL);
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if (Fcb == NULL)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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goto ByeBye;
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}
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Ccb = ExAllocatePoolWithTag(NonPagedPool,
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sizeof(CCB),
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TAG_CCB);
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if (Ccb == NULL)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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goto ByeBye;
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}
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RtlZeroMemory(Ccb,
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sizeof(CCB));
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DeviceExt->StreamFileObject->ReadAccess = TRUE;
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DeviceExt->StreamFileObject->WriteAccess = FALSE;
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DeviceExt->StreamFileObject->DeleteAccess = FALSE;
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DeviceExt->StreamFileObject->FsContext = Fcb;
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DeviceExt->StreamFileObject->FsContext2 = Ccb;
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DeviceExt->StreamFileObject->SectionObjectPointer = &Fcb->SectionObjectPointers;
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DeviceExt->StreamFileObject->PrivateCacheMap = NULL;
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DeviceExt->StreamFileObject->Vpb = DeviceExt->Vpb;
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Ccb->PtrFileObject = DeviceExt->StreamFileObject;
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Fcb->FileObject = DeviceExt->StreamFileObject;
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Fcb->DevExt = (PDEVICE_EXTENSION)DeviceExt->StorageDevice;
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Fcb->Flags = FCB_IS_VOLUME_STREAM;
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Fcb->RFCB.FileSize.QuadPart = (DeviceExt->CdInfo.VolumeSpaceSize + DeviceExt->CdInfo.VolumeOffset) * BLOCKSIZE;
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Fcb->RFCB.ValidDataLength = Fcb->RFCB.AllocationSize = Fcb->RFCB.FileSize;
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Fcb->Entry.ExtentLocationL = 0;
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Fcb->Entry.DataLengthL = (DeviceExt->CdInfo.VolumeSpaceSize + DeviceExt->CdInfo.VolumeOffset) * BLOCKSIZE;
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CcInitializeCacheMap(DeviceExt->StreamFileObject,
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(PCC_FILE_SIZES)(&Fcb->RFCB.AllocationSize),
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TRUE,
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&(CdfsGlobalData->CacheMgrCallbacks),
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Fcb);
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ExInitializeResourceLite(&DeviceExt->VcbResource);
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KeInitializeSpinLock(&DeviceExt->FcbListLock);
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InitializeListHead(&DeviceExt->FcbListHead);
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Status = STATUS_SUCCESS;
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ByeBye:
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if (!NT_SUCCESS(Status))
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{
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/* Cleanup */
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if (DeviceExt && DeviceExt->StreamFileObject)
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ObDereferenceObject(DeviceExt->StreamFileObject);
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if (Fcb)
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ExFreePool(Fcb);
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if (Ccb)
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ExFreePool(Ccb);
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if (NewDeviceObject)
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IoDeleteDevice(NewDeviceObject);
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}
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DPRINT("CdfsMountVolume() done (Status: %lx)\n", Status);
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return(Status);
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}
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static NTSTATUS
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CdfsVerifyVolume(PDEVICE_OBJECT DeviceObject,
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PIRP Irp)
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{
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PDEVICE_EXTENSION DeviceExt;
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PDEVICE_OBJECT DeviceToVerify;
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PIO_STACK_LOCATION Stack;
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NTSTATUS Status;
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CDINFO CdInfo;
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PLIST_ENTRY Entry;
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PFCB Fcb;
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DPRINT1 ("CdfsVerifyVolume() called\n");
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#if 0
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if (DeviceObject != CdfsGlobalData->DeviceObject)
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{
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DPRINT1("DeviceObject != CdfsGlobalData->DeviceObject\n");
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return(STATUS_INVALID_DEVICE_REQUEST);
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}
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#endif
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DeviceExt = DeviceObject->DeviceExtension;
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Stack = IoGetCurrentIrpStackLocation (Irp);
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DeviceToVerify = Stack->Parameters.VerifyVolume.DeviceObject;
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FsRtlEnterFileSystem();
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ExAcquireResourceExclusiveLite (&DeviceExt->VcbResource,
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TRUE);
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if (!(DeviceToVerify->Flags & DO_VERIFY_VOLUME))
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{
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DPRINT1 ("Volume has been verified!\n");
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ExReleaseResourceLite (&DeviceExt->VcbResource);
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FsRtlExitFileSystem();
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return STATUS_SUCCESS;
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}
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DPRINT1 ("Device object %p Device to verify %p\n", DeviceObject, DeviceToVerify);
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Status = CdfsGetVolumeData (DeviceToVerify,
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&CdInfo);
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if (NT_SUCCESS(Status) &&
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CdInfo.SerialNumber == DeviceToVerify->Vpb->SerialNumber &&
|
|
CdInfo.VolumeLabelLength == DeviceToVerify->Vpb->VolumeLabelLength &&
|
|
!wcsncmp (CdInfo.VolumeLabel, DeviceToVerify->Vpb->VolumeLabel, CdInfo.VolumeLabelLength))
|
|
{
|
|
DPRINT1 ("Same volume!\n");
|
|
|
|
/* FIXME: Flush and purge metadata */
|
|
|
|
Status = STATUS_SUCCESS;
|
|
}
|
|
else
|
|
{
|
|
DPRINT1 ("Different volume!\n");
|
|
|
|
/* FIXME: force volume dismount */
|
|
Entry = DeviceExt->FcbListHead.Flink;
|
|
while (Entry != &DeviceExt->FcbListHead)
|
|
{
|
|
Fcb = (PFCB)CONTAINING_RECORD(Entry, FCB, FcbListEntry);
|
|
DPRINT1("OpenFile %S RefCount %ld\n", Fcb->PathName, Fcb->RefCount);
|
|
|
|
Entry = Entry->Flink;
|
|
}
|
|
|
|
Status = STATUS_WRONG_VOLUME;
|
|
}
|
|
|
|
DeviceToVerify->Flags &= ~DO_VERIFY_VOLUME;
|
|
|
|
ExReleaseResourceLite (&DeviceExt->VcbResource);
|
|
FsRtlExitFileSystem();
|
|
|
|
return Status;
|
|
}
|
|
|
|
|
|
NTSTATUS NTAPI
|
|
CdfsSetCompression(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp)
|
|
{
|
|
PIO_STACK_LOCATION Stack;
|
|
USHORT CompressionState;
|
|
|
|
Stack = IoGetCurrentIrpStackLocation(Irp);
|
|
|
|
if (Stack->Parameters.DeviceIoControl.InputBufferLength != sizeof(CompressionState))
|
|
return STATUS_INVALID_DEVICE_REQUEST;
|
|
|
|
CompressionState = *(USHORT *)Irp->AssociatedIrp.SystemBuffer;
|
|
if (CompressionState != COMPRESSION_FORMAT_NONE)
|
|
return STATUS_INVALID_PARAMETER;
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
NTSTATUS NTAPI
|
|
CdfsFileSystemControl(PDEVICE_OBJECT DeviceObject,
|
|
PIRP Irp)
|
|
{
|
|
PIO_STACK_LOCATION Stack;
|
|
NTSTATUS Status;
|
|
|
|
DPRINT("CdfsFileSystemControl() called\n");
|
|
|
|
Stack = IoGetCurrentIrpStackLocation(Irp);
|
|
|
|
switch (Stack->MinorFunction)
|
|
{
|
|
case IRP_MN_USER_FS_REQUEST:
|
|
switch (Stack->Parameters.DeviceIoControl.IoControlCode)
|
|
{
|
|
case FSCTL_SET_COMPRESSION:
|
|
DPRINT("CDFS: IRP_MN_USER_FS_REQUEST / FSCTL_SET_COMPRESSION\n");
|
|
Status = CdfsSetCompression(DeviceObject, Irp);
|
|
break;
|
|
|
|
default:
|
|
DPRINT1("CDFS: IRP_MN_USER_FS_REQUEST / Unknown IoControlCode 0x%x\n",
|
|
Stack->Parameters.DeviceIoControl.IoControlCode);
|
|
Status = STATUS_INVALID_DEVICE_REQUEST;
|
|
}
|
|
break;
|
|
|
|
case IRP_MN_MOUNT_VOLUME:
|
|
DPRINT("CDFS: IRP_MN_MOUNT_VOLUME\n");
|
|
Status = CdfsMountVolume(DeviceObject, Irp);
|
|
break;
|
|
|
|
case IRP_MN_VERIFY_VOLUME:
|
|
DPRINT1("CDFS: IRP_MN_VERIFY_VOLUME\n");
|
|
Status = CdfsVerifyVolume(DeviceObject, Irp);
|
|
break;
|
|
|
|
default:
|
|
DPRINT1("CDFS FSC: MinorFunction %d\n", Stack->MinorFunction);
|
|
Status = STATUS_INVALID_DEVICE_REQUEST;
|
|
break;
|
|
}
|
|
|
|
Irp->IoStatus.Status = Status;
|
|
Irp->IoStatus.Information = 0;
|
|
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
|
|
|
return(Status);
|
|
}
|
|
|
|
/* EOF */
|