+++ /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 St, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * COPYRIGHT: See COPYING in the top level directory
- * PROJECT: ReactOS kernel
- * FILE: drivers/filesystem/ntfs/attrib.c
- * PURPOSE: NTFS filesystem driver
- * PROGRAMMERS: Eric Kohl
- * Valentin Verkhovsky
- * Hervé Poussineau (hpoussin@reactos.org)
- * Pierre Schweitzer (pierre@reactos.org)
- */
-
-/* INCLUDES *****************************************************************/
-
-#include "ntfs.h"
-
-#define NDEBUG
-#include <debug.h>
-
-/* FUNCTIONS ****************************************************************/
-
-PUCHAR
-DecodeRun(PUCHAR DataRun,
- LONGLONG *DataRunOffset,
- ULONGLONG *DataRunLength)
-{
- UCHAR DataRunOffsetSize;
- UCHAR DataRunLengthSize;
- CHAR i;
-
- DataRunOffsetSize = (*DataRun >> 4) & 0xF;
- DataRunLengthSize = *DataRun & 0xF;
- *DataRunOffset = 0;
- *DataRunLength = 0;
- DataRun++;
- for (i = 0; i < DataRunLengthSize; i++)
- {
- *DataRunLength += ((ULONG64)*DataRun) << (i * 8);
- DataRun++;
- }
-
- /* NTFS 3+ sparse files */
- if (DataRunOffsetSize == 0)
- {
- *DataRunOffset = -1;
- }
- else
- {
- for (i = 0; i < DataRunOffsetSize - 1; i++)
- {
- *DataRunOffset += ((ULONG64)*DataRun) << (i * 8);
- DataRun++;
- }
- /* The last byte contains sign so we must process it different way. */
- *DataRunOffset = ((LONG64)(CHAR)(*(DataRun++)) << (i * 8)) + *DataRunOffset;
- }
-
- DPRINT("DataRunOffsetSize: %x\n", DataRunOffsetSize);
- DPRINT("DataRunLengthSize: %x\n", DataRunLengthSize);
- DPRINT("DataRunOffset: %x\n", *DataRunOffset);
- DPRINT("DataRunLength: %x\n", *DataRunLength);
-
- return DataRun;
-}
-
-BOOLEAN
-FindRun(PNTFS_ATTR_RECORD NresAttr,
- ULONGLONG vcn,
- PULONGLONG lcn,
- PULONGLONG count)
-{
- if (vcn < NresAttr->NonResident.LowestVCN || vcn > NresAttr->NonResident.HighestVCN)
- return FALSE;
-
- DecodeRun((PUCHAR)((ULONG_PTR)NresAttr + NresAttr->NonResident.MappingPairsOffset), (PLONGLONG)lcn, count);
-
- return TRUE;
-}
-
-static
-NTSTATUS
-InternalReadNonResidentAttributes(PFIND_ATTR_CONTXT Context)
-{
- ULONGLONG ListSize;
- PNTFS_ATTR_RECORD Attribute;
- PNTFS_ATTR_CONTEXT ListContext;
-
- DPRINT("InternalReadNonResidentAttributes(%p)\n", Context);
-
- Attribute = Context->CurrAttr;
- ASSERT(Attribute->Type == AttributeAttributeList);
-
- if (Context->OnlyResident)
- {
- Context->NonResidentStart = NULL;
- Context->NonResidentEnd = NULL;
- return STATUS_SUCCESS;
- }
-
- if (Context->NonResidentStart != NULL)
- {
- return STATUS_FILE_CORRUPT_ERROR;
- }
-
- ListContext = PrepareAttributeContext(Attribute);
- ListSize = AttributeDataLength(&ListContext->Record);
- if (ListSize > 0xFFFFFFFF)
- {
- ReleaseAttributeContext(ListContext);
- return STATUS_BUFFER_OVERFLOW;
- }
-
- Context->NonResidentStart = ExAllocatePoolWithTag(NonPagedPool, (ULONG)ListSize, TAG_NTFS);
- if (Context->NonResidentStart == NULL)
- {
- ReleaseAttributeContext(ListContext);
- return STATUS_INSUFFICIENT_RESOURCES;
- }
-
- if (ReadAttribute(Context->Vcb, ListContext, 0, (PCHAR)Context->NonResidentStart, (ULONG)ListSize) != ListSize)
- {
- ExFreePoolWithTag(Context->NonResidentStart, TAG_NTFS);
- Context->NonResidentStart = NULL;
- ReleaseAttributeContext(ListContext);
- return STATUS_FILE_CORRUPT_ERROR;
- }
-
- ReleaseAttributeContext(ListContext);
- Context->NonResidentEnd = (PNTFS_ATTR_RECORD)((PCHAR)Context->NonResidentStart + ListSize);
- return STATUS_SUCCESS;
-}
-
-static
-PNTFS_ATTR_RECORD
-InternalGetNextAttribute(PFIND_ATTR_CONTXT Context)
-{
- if (Context->CurrAttr == (PVOID)-1)
- {
- return NULL;
- }
-
- if (Context->CurrAttr >= Context->FirstAttr &&
- Context->CurrAttr < Context->LastAttr)
- {
- if (Context->CurrAttr->Length == 0)
- {
- DPRINT1("Broken length!\n");
- Context->CurrAttr = (PVOID)-1;
- return NULL;
- }
-
- Context->CurrAttr = (PNTFS_ATTR_RECORD)((ULONG_PTR)Context->CurrAttr + Context->CurrAttr->Length);
- if (Context->CurrAttr < Context->LastAttr &&
- Context->CurrAttr->Type != AttributeEnd)
- {
- return Context->CurrAttr;
- }
- }
-
- if (Context->NonResidentStart == NULL)
- {
- Context->CurrAttr = (PVOID)-1;
- return NULL;
- }
-
- if (Context->CurrAttr < Context->NonResidentStart ||
- Context->CurrAttr >= Context->NonResidentEnd)
- {
- Context->CurrAttr = Context->NonResidentStart;
- }
- else if (Context->CurrAttr->Length != 0)
- {
- Context->CurrAttr = (PNTFS_ATTR_RECORD)((ULONG_PTR)Context->CurrAttr + Context->CurrAttr->Length);
- }
- else
- {
- DPRINT1("Broken length!\n");
- Context->CurrAttr = (PVOID)-1;
- return NULL;
- }
-
- if (Context->CurrAttr < Context->NonResidentEnd &&
- Context->CurrAttr->Type != AttributeEnd)
- {
- return Context->CurrAttr;
- }
-
- Context->CurrAttr = (PVOID)-1;
- return NULL;
-}
-
-NTSTATUS
-FindFirstAttribute(PFIND_ATTR_CONTXT Context,
- PDEVICE_EXTENSION Vcb,
- PFILE_RECORD_HEADER FileRecord,
- BOOLEAN OnlyResident,
- PNTFS_ATTR_RECORD * Attribute)
-{
- NTSTATUS Status;
-
- DPRINT("FindFistAttribute(%p, %p, %p, %p, %u, %p)\n", Context, Vcb, FileRecord, OnlyResident, Attribute);
-
- Context->Vcb = Vcb;
- Context->OnlyResident = OnlyResident;
- Context->FirstAttr = (PNTFS_ATTR_RECORD)((ULONG_PTR)FileRecord + FileRecord->AttributeOffset);
- Context->CurrAttr = Context->FirstAttr;
- Context->LastAttr = (PNTFS_ATTR_RECORD)((ULONG_PTR)FileRecord + FileRecord->BytesInUse);
- Context->NonResidentStart = NULL;
- Context->NonResidentEnd = NULL;
-
- if (Context->FirstAttr->Type == AttributeEnd)
- {
- Context->CurrAttr = (PVOID)-1;
- return STATUS_END_OF_FILE;
- }
- else if (Context->FirstAttr->Type == AttributeAttributeList)
- {
- Status = InternalReadNonResidentAttributes(Context);
- if (!NT_SUCCESS(Status))
- {
- return Status;
- }
-
- *Attribute = InternalGetNextAttribute(Context);
- if (*Attribute == NULL)
- {
- return STATUS_END_OF_FILE;
- }
- }
- else
- {
- *Attribute = Context->CurrAttr;
- }
-
- return STATUS_SUCCESS;
-}
-
-NTSTATUS
-FindNextAttribute(PFIND_ATTR_CONTXT Context,
- PNTFS_ATTR_RECORD * Attribute)
-{
- NTSTATUS Status;
-
- DPRINT("FindNextAttribute(%p, %p)\n", Context, Attribute);
-
- *Attribute = InternalGetNextAttribute(Context);
- if (*Attribute == NULL)
- {
- return STATUS_END_OF_FILE;
- }
-
- if (Context->CurrAttr->Type != AttributeAttributeList)
- {
- return STATUS_SUCCESS;
- }
-
- Status = InternalReadNonResidentAttributes(Context);
- if (!NT_SUCCESS(Status))
- {
- return Status;
- }
-
- *Attribute = InternalGetNextAttribute(Context);
- if (*Attribute == NULL)
- {
- return STATUS_END_OF_FILE;
- }
-
- return STATUS_SUCCESS;
-}
-
-VOID
-FindCloseAttribute(PFIND_ATTR_CONTXT Context)
-{
- if (Context->NonResidentStart != NULL)
- {
- ExFreePoolWithTag(Context->NonResidentStart, TAG_NTFS);
- Context->NonResidentStart = NULL;
- }
-}
-
-static
-VOID
-NtfsDumpFileNameAttribute(PNTFS_ATTR_RECORD Attribute)
-{
- PFILENAME_ATTRIBUTE FileNameAttr;
-
- DbgPrint(" $FILE_NAME ");
-
-// DbgPrint(" Length %lu Offset %hu ", Attribute->Resident.ValueLength, Attribute->Resident.ValueOffset);
-
- FileNameAttr = (PFILENAME_ATTRIBUTE)((ULONG_PTR)Attribute + Attribute->Resident.ValueOffset);
- DbgPrint(" (%x) '%.*S' ", FileNameAttr->NameType, FileNameAttr->NameLength, FileNameAttr->Name);
- DbgPrint(" '%x' ", FileNameAttr->FileAttributes);
-}
-
-
-static
-VOID
-NtfsDumpStandardInformationAttribute(PNTFS_ATTR_RECORD Attribute)
-{
- PSTANDARD_INFORMATION StandardInfoAttr;
-
- DbgPrint(" $STANDARD_INFORMATION ");
-
-// DbgPrint(" Length %lu Offset %hu ", Attribute->Resident.ValueLength, Attribute->Resident.ValueOffset);
-
- StandardInfoAttr = (PSTANDARD_INFORMATION)((ULONG_PTR)Attribute + Attribute->Resident.ValueOffset);
- DbgPrint(" '%x' ", StandardInfoAttr->FileAttribute);
-}
-
-
-static
-VOID
-NtfsDumpVolumeNameAttribute(PNTFS_ATTR_RECORD Attribute)
-{
- PWCHAR VolumeName;
-
- DbgPrint(" $VOLUME_NAME ");
-
-// DbgPrint(" Length %lu Offset %hu ", Attribute->Resident.ValueLength, Attribute->Resident.ValueOffset);
-
- VolumeName = (PWCHAR)((ULONG_PTR)Attribute + Attribute->Resident.ValueOffset);
- DbgPrint(" '%.*S' ", Attribute->Resident.ValueLength / sizeof(WCHAR), VolumeName);
-}
-
-
-static
-VOID
-NtfsDumpVolumeInformationAttribute(PNTFS_ATTR_RECORD Attribute)
-{
- PVOLINFO_ATTRIBUTE VolInfoAttr;
-
- DbgPrint(" $VOLUME_INFORMATION ");
-
-// DbgPrint(" Length %lu Offset %hu ", Attribute->Resident.ValueLength, Attribute->Resident.ValueOffset);
-
- VolInfoAttr = (PVOLINFO_ATTRIBUTE)((ULONG_PTR)Attribute + Attribute->Resident.ValueOffset);
- DbgPrint(" NTFS Version %u.%u Flags 0x%04hx ",
- VolInfoAttr->MajorVersion,
- VolInfoAttr->MinorVersion,
- VolInfoAttr->Flags);
-}
-
-
-static
-VOID
-NtfsDumpIndexRootAttribute(PNTFS_ATTR_RECORD Attribute)
-{
- PINDEX_ROOT_ATTRIBUTE IndexRootAttr;
-
- IndexRootAttr = (PINDEX_ROOT_ATTRIBUTE)((ULONG_PTR)Attribute + Attribute->Resident.ValueOffset);
-
- if (IndexRootAttr->AttributeType == AttributeFileName)
- ASSERT(IndexRootAttr->CollationRule == COLLATION_FILE_NAME);
-
- DbgPrint(" $INDEX_ROOT (%uB, %u) ", IndexRootAttr->SizeOfEntry, IndexRootAttr->ClustersPerIndexRecord);
-
- if (IndexRootAttr->Header.Flags == INDEX_ROOT_SMALL)
- {
- DbgPrint(" (small) ");
- }
- else
- {
- ASSERT(IndexRootAttr->Header.Flags == INDEX_ROOT_LARGE);
- DbgPrint(" (large) ");
- }
-}
-
-
-static
-VOID
-NtfsDumpAttribute(PDEVICE_EXTENSION Vcb,
- PNTFS_ATTR_RECORD Attribute)
-{
- UNICODE_STRING Name;
-
- ULONGLONG lcn = 0;
- ULONGLONG runcount = 0;
-
- switch (Attribute->Type)
- {
- case AttributeFileName:
- NtfsDumpFileNameAttribute(Attribute);
- break;
-
- case AttributeStandardInformation:
- NtfsDumpStandardInformationAttribute(Attribute);
- break;
-
- case AttributeObjectId:
- DbgPrint(" $OBJECT_ID ");
- break;
-
- case AttributeSecurityDescriptor:
- DbgPrint(" $SECURITY_DESCRIPTOR ");
- break;
-
- case AttributeVolumeName:
- NtfsDumpVolumeNameAttribute(Attribute);
- break;
-
- case AttributeVolumeInformation:
- NtfsDumpVolumeInformationAttribute(Attribute);
- break;
-
- case AttributeData:
- DbgPrint(" $DATA ");
- //DataBuf = ExAllocatePool(NonPagedPool,AttributeLengthAllocated(Attribute));
- break;
-
- case AttributeIndexRoot:
- NtfsDumpIndexRootAttribute(Attribute);
- break;
-
- case AttributeIndexAllocation:
- DbgPrint(" $INDEX_ALLOCATION ");
- break;
-
- case AttributeBitmap:
- DbgPrint(" $BITMAP ");
- break;
-
- case AttributeReparsePoint:
- DbgPrint(" $REPARSE_POINT ");
- break;
-
- case AttributeEAInformation:
- DbgPrint(" $EA_INFORMATION ");
- break;
-
- case AttributeEA:
- DbgPrint(" $EA ");
- break;
-
- case AttributePropertySet:
- DbgPrint(" $PROPERTY_SET ");
- break;
-
- case AttributeLoggedUtilityStream:
- DbgPrint(" $LOGGED_UTILITY_STREAM ");
- break;
-
- default:
- DbgPrint(" Attribute %lx ",
- Attribute->Type);
- break;
- }
-
- if (Attribute->Type != AttributeAttributeList)
- {
- if (Attribute->NameLength != 0)
- {
- Name.Length = Attribute->NameLength * sizeof(WCHAR);
- Name.MaximumLength = Name.Length;
- Name.Buffer = (PWCHAR)((ULONG_PTR)Attribute + Attribute->NameOffset);
-
- DbgPrint("'%wZ' ", &Name);
- }
-
- DbgPrint("(%s)\n",
- Attribute->IsNonResident ? "non-resident" : "resident");
-
- if (Attribute->IsNonResident)
- {
- FindRun(Attribute,0,&lcn, &runcount);
-
- DbgPrint(" AllocatedSize %I64u DataSize %I64u\n",
- Attribute->NonResident.AllocatedSize, Attribute->NonResident.DataSize);
- DbgPrint(" logical clusters: %I64u - %I64u\n",
- lcn, lcn + runcount - 1);
- }
- }
-}
-
-
-VOID
-NtfsDumpFileAttributes(PDEVICE_EXTENSION Vcb,
- PFILE_RECORD_HEADER FileRecord)
-{
- NTSTATUS Status;
- FIND_ATTR_CONTXT Context;
- PNTFS_ATTR_RECORD Attribute;
-
- Status = FindFirstAttribute(&Context, Vcb, FileRecord, FALSE, &Attribute);
- while (NT_SUCCESS(Status))
- {
- NtfsDumpAttribute(Vcb, Attribute);
-
- Status = FindNextAttribute(&Context, &Attribute);
- }
-
- FindCloseAttribute(&Context);
-}
-
-PFILENAME_ATTRIBUTE
-GetFileNameFromRecord(PDEVICE_EXTENSION Vcb,
- PFILE_RECORD_HEADER FileRecord,
- UCHAR NameType)
-{
- FIND_ATTR_CONTXT Context;
- PNTFS_ATTR_RECORD Attribute;
- PFILENAME_ATTRIBUTE Name;
- NTSTATUS Status;
-
- Status = FindFirstAttribute(&Context, Vcb, FileRecord, FALSE, &Attribute);
- while (NT_SUCCESS(Status))
- {
- if (Attribute->Type == AttributeFileName)
- {
- Name = (PFILENAME_ATTRIBUTE)((ULONG_PTR)Attribute + Attribute->Resident.ValueOffset);
- if (Name->NameType == NameType ||
- (Name->NameType == NTFS_FILE_NAME_WIN32_AND_DOS && NameType == NTFS_FILE_NAME_WIN32) ||
- (Name->NameType == NTFS_FILE_NAME_WIN32_AND_DOS && NameType == NTFS_FILE_NAME_DOS))
- {
- FindCloseAttribute(&Context);
- return Name;
- }
- }
-
- Status = FindNextAttribute(&Context, &Attribute);
- }
-
- FindCloseAttribute(&Context);
- return NULL;
-}
-
-PSTANDARD_INFORMATION
-GetStandardInformationFromRecord(PDEVICE_EXTENSION Vcb,
- PFILE_RECORD_HEADER FileRecord)
-{
- NTSTATUS Status;
- FIND_ATTR_CONTXT Context;
- PNTFS_ATTR_RECORD Attribute;
- PSTANDARD_INFORMATION StdInfo;
-
- Status = FindFirstAttribute(&Context, Vcb, FileRecord, FALSE, &Attribute);
- while (NT_SUCCESS(Status))
- {
- if (Attribute->Type == AttributeStandardInformation)
- {
- StdInfo = (PSTANDARD_INFORMATION)((ULONG_PTR)Attribute + Attribute->Resident.ValueOffset);
- FindCloseAttribute(&Context);
- return StdInfo;
- }
-
- Status = FindNextAttribute(&Context, &Attribute);
- }
-
- FindCloseAttribute(&Context);
- return NULL;
-}
-
-PFILENAME_ATTRIBUTE
-GetBestFileNameFromRecord(PDEVICE_EXTENSION Vcb,
- PFILE_RECORD_HEADER FileRecord)
-{
- PFILENAME_ATTRIBUTE FileName;
-
- FileName = GetFileNameFromRecord(Vcb, FileRecord, NTFS_FILE_NAME_POSIX);
- if (FileName == NULL)
- {
- FileName = GetFileNameFromRecord(Vcb, FileRecord, NTFS_FILE_NAME_WIN32);
- if (FileName == NULL)
- {
- FileName = GetFileNameFromRecord(Vcb, FileRecord, NTFS_FILE_NAME_DOS);
- }
- }
-
- return FileName;
-}
-
-/* EOF */
projects / reactos.git / blobdiff