/*
* ReactOS kernel
- * Copyright (C) 2002 ReactOS Team
+ * Copyright (C) 2002, 2014 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
* PROJECT: ReactOS kernel
* FILE: drivers/filesystem/ntfs/fcb.c
* PURPOSE: NTFS filesystem driver
- * PROGRAMMER: Eric Kohl
+ * PROGRAMMERS: Eric Kohl
+ * Pierre Schweitzer (pierre@reactos.org)
+ * Hervé Poussineau (hpoussin@reactos.org)
*/
/* INCLUDES *****************************************************************/
#define NDEBUG
#include <debug.h>
-/* MACROS *******************************************************************/
-
-#define TAG_FCB 'BCFI'
-
/* FUNCTIONS ****************************************************************/
static
-PWCHAR
-NtfsGetNextPathElement(PWCHAR FileName)
+PCWSTR
+NtfsGetNextPathElement(PCWSTR FileName)
{
if (*FileName == L'\0')
{
static
VOID
NtfsWSubString(PWCHAR pTarget,
- const PWCHAR pSource,
+ PCWSTR pSource,
size_t pLength)
{
wcsncpy(pTarget, pSource, pLength);
PNTFS_FCB
NtfsCreateFCB(PCWSTR FileName,
+ PCWSTR Stream,
PNTFS_VCB Vcb)
{
PNTFS_FCB Fcb;
ASSERT(Vcb);
ASSERT(Vcb->Identifier.Type == NTFS_TYPE_VCB);
- Fcb = ExAllocatePoolWithTag(NonPagedPool, sizeof(NTFS_FCB), TAG_FCB);
+ Fcb = ExAllocateFromNPagedLookasideList(&NtfsGlobalData->FcbLookasideList);
RtlZeroMemory(Fcb, sizeof(NTFS_FCB));
Fcb->Identifier.Type = NTFS_TYPE_FCB;
}
}
+ if (Stream)
+ {
+ wcscpy(Fcb->Stream, Stream);
+ }
+ else
+ {
+ Fcb->Stream[0] = UNICODE_NULL;
+ }
+
ExInitializeResourceLite(&Fcb->MainResource);
Fcb->RFCB.Resource = &(Fcb->MainResource);
ExDeleteResourceLite(&Fcb->MainResource);
- ExFreePool(Fcb);
+ ExFreeToNPagedLookasideList(&NtfsGlobalData->FcbLookasideList, Fcb);
}
}
+BOOLEAN
+NtfsFCBIsReparsePoint(PNTFS_FCB Fcb)
+{
+ return ((Fcb->Entry.FileAttributes & NTFS_FILE_TYPE_REPARSE) == NTFS_FILE_TYPE_REPARSE);
+}
+
+
+BOOLEAN
+NtfsFCBIsCompressed(PNTFS_FCB Fcb)
+{
+ return ((Fcb->Entry.FileAttributes & NTFS_FILE_TYPE_COMPRESSED) == NTFS_FILE_TYPE_COMPRESSED);
+}
+
BOOLEAN
NtfsFCBIsRoot(PNTFS_FCB Fcb)
{
if (Fcb->RefCount <= 0 && !NtfsFCBIsDirectory(Fcb))
{
RemoveEntryList(&Fcb->FcbListEntry);
+ KeReleaseSpinLock(&Vcb->FcbListLock, oldIrql);
CcUninitializeCacheMap(Fcb->FileObject, NULL, NULL);
NtfsDestroyFCB(Fcb);
}
-
- KeReleaseSpinLock(&Vcb->FcbListLock, oldIrql);
+ else
+ {
+ KeReleaseSpinLock(&Vcb->FcbListLock, oldIrql);
+ }
}
Fcb->Vcb = Vcb;
Status = STATUS_SUCCESS;
- CcInitializeCacheMap(FileObject,
- (PCC_FILE_SIZES)(&Fcb->RFCB.AllocationSize),
- FALSE,
- &(NtfsGlobalData->CacheMgrCallbacks),
- Fcb);
+ _SEH2_TRY
+ {
+ CcInitializeCacheMap(FileObject,
+ (PCC_FILE_SIZES)(&Fcb->RFCB.AllocationSize),
+ FALSE,
+ &(NtfsGlobalData->CacheMgrCallbacks),
+ Fcb);
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ FileObject->FsContext2 = NULL;
+ ExFreePoolWithTag(newCCB, TAG_CCB);
+ ObDereferenceObject(FileObject);
+ Fcb->FileObject = NULL;
+ return _SEH2_GetExceptionCode();
+ }
+ _SEH2_END;
ObDereferenceObject(FileObject);
Fcb->Flags |= FCB_CACHE_INITIALIZED;
return NULL;
}
- FileName = GetFileNameFromRecord(MftRecord);
+ FileName = GetFileNameFromRecord(Vcb, MftRecord, NTFS_FILE_NAME_WIN32);
if (!FileName)
{
ExFreePoolWithTag(MftRecord, TAG_NTFS);
return NULL;
}
- Fcb = NtfsCreateFCB(L"\\", Vcb);
+ Fcb = NtfsCreateFCB(L"\\", NULL, Vcb);
if (!Fcb)
{
ExFreePoolWithTag(MftRecord, TAG_NTFS);
Fcb->RFCB.ValidDataLength.QuadPart = FileName->DataSize;
Fcb->RFCB.AllocationSize.QuadPart = FileName->AllocatedSize;
Fcb->MFTIndex = NTFS_FILE_ROOT;
+ Fcb->LinkCount = MftRecord->LinkCount;
NtfsFCBInitializeCache(Vcb, Fcb);
NtfsAddFCBToTable(Vcb, Fcb);
}
-#if 0
-static VOID
-NtfsGetDirEntryName(PDEVICE_EXTENSION DeviceExt,
- PDIR_RECORD Record,
- PWSTR Name)
-/*
- * FUNCTION: Retrieves the file name, be it in short or long file name format
- */
-{
- if (Record->FileIdLength == 1 && Record->FileId[0] == 0)
- {
- wcscpy(Name, L".");
- }
- else if (Record->FileIdLength == 1 && Record->FileId[0] == 1)
- {
- wcscpy(Name, L"..");
- }
- else
- {
- if (DeviceExt->CdInfo.JolietLevel == 0)
- {
- ULONG i;
-
- for (i = 0; i < Record->FileIdLength && Record->FileId[i] != ';'; i++)
- Name[i] = (WCHAR)Record->FileId[i];
- Name[i] = 0;
- }
- else
- {
- NtfsSwapString(Name, Record->FileId, Record->FileIdLength);
- }
- }
-
- DPRINT("Name '%S'\n", Name);
-}
-#endif
-
-
NTSTATUS
NtfsMakeFCBFromDirEntry(PNTFS_VCB Vcb,
- PNTFS_FCB DirectoryFCB,
- PUNICODE_STRING Name,
- PFILE_RECORD_HEADER Record,
+ PNTFS_FCB DirectoryFCB,
+ PUNICODE_STRING Name,
+ PCWSTR Stream,
+ PFILE_RECORD_HEADER Record,
ULONGLONG MFTIndex,
- PNTFS_FCB * fileFCB)
+ PNTFS_FCB * fileFCB)
{
WCHAR pathName[MAX_PATH];
PFILENAME_ATTRIBUTE FileName;
+ PSTANDARD_INFORMATION StdInfo;
PNTFS_FCB rcFCB;
+ ULONGLONG Size, AllocatedSize;
- DPRINT1("NtfsMakeFCBFromDirEntry(%p, %p, %wZ, %p, %p)\n", Vcb, DirectoryFCB, Name, Record, fileFCB);
+ DPRINT1("NtfsMakeFCBFromDirEntry(%p, %p, %wZ, %p, %p, %p)\n", Vcb, DirectoryFCB, Name, Stream, Record, fileFCB);
- FileName = GetFileNameFromRecord(Record);
+ FileName = GetBestFileNameFromRecord(Vcb, Record);
if (!FileName)
{
return STATUS_OBJECT_NAME_NOT_FOUND; // Not sure that's the best here
}
- if (Name->Buffer[0] != 0 && wcslen(DirectoryFCB->PathName) +
- sizeof(WCHAR) + Name->Length / sizeof(WCHAR) > MAX_PATH)
+ if (DirectoryFCB && Name)
{
- return STATUS_OBJECT_NAME_INVALID;
- }
+ if (Name->Buffer[0] != 0 && wcslen(DirectoryFCB->PathName) +
+ sizeof(WCHAR) + Name->Length / sizeof(WCHAR) > MAX_PATH)
+ {
+ return STATUS_OBJECT_NAME_INVALID;
+ }
- wcscpy(pathName, DirectoryFCB->PathName);
- if (!NtfsFCBIsRoot(DirectoryFCB))
+ wcscpy(pathName, DirectoryFCB->PathName);
+ if (!NtfsFCBIsRoot(DirectoryFCB))
+ {
+ wcscat(pathName, L"\\");
+ }
+ wcscat(pathName, Name->Buffer);
+ }
+ else
{
- wcscat(pathName, L"\\");
+ RtlCopyMemory(pathName, FileName->Name, FileName->NameLength * sizeof (WCHAR));
+ pathName[FileName->NameLength] = UNICODE_NULL;
}
- wcscat(pathName, Name->Buffer);
- rcFCB = NtfsCreateFCB(pathName, Vcb);
+ Size = NtfsGetFileSize(Vcb, Record, (Stream ? Stream : L""), (Stream ? wcslen(Stream) : 0), &AllocatedSize);
+
+ rcFCB = NtfsCreateFCB(pathName, Stream, Vcb);
if (!rcFCB)
{
return STATUS_INSUFFICIENT_RESOURCES;
memcpy(&rcFCB->Entry, FileName, FIELD_OFFSET(FILENAME_ATTRIBUTE, NameLength));
rcFCB->Entry.NameType = FileName->NameType;
- rcFCB->RFCB.FileSize.QuadPart = FileName->DataSize;
- rcFCB->RFCB.ValidDataLength.QuadPart = FileName->DataSize;
- rcFCB->RFCB.AllocationSize.QuadPart = FileName->AllocatedSize;
+ rcFCB->RFCB.FileSize.QuadPart = Size;
+ rcFCB->RFCB.ValidDataLength.QuadPart = Size;
+ rcFCB->RFCB.AllocationSize.QuadPart = AllocatedSize;
+
+ StdInfo = GetStandardInformationFromRecord(Vcb, Record);
+ if (StdInfo != NULL)
+ {
+ rcFCB->Entry.FileAttributes |= StdInfo->FileAttribute;
+ }
NtfsFCBInitializeCache(Vcb, rcFCB);
rcFCB->RefCount = 1;
rcFCB->MFTIndex = MFTIndex;
+ rcFCB->LinkCount = Record->LinkCount;
NtfsAddFCBToTable(Vcb, rcFCB);
*fileFCB = rcFCB;
if (!(Fcb->Flags & FCB_CACHE_INITIALIZED))
{
- CcInitializeCacheMap(FileObject,
- (PCC_FILE_SIZES)(&Fcb->RFCB.AllocationSize),
- FALSE,
- NULL,
- NULL);
+ _SEH2_TRY
+ {
+ CcInitializeCacheMap(FileObject,
+ (PCC_FILE_SIZES)(&Fcb->RFCB.AllocationSize),
+ FALSE,
+ &(NtfsGlobalData->CacheMgrCallbacks),
+ Fcb);
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ FileObject->FsContext2 = NULL;
+ ExFreePoolWithTag(newCCB, TAG_CCB);
+ return _SEH2_GetExceptionCode();
+ }
+ _SEH2_END;
Fcb->Flags |= FCB_CACHE_INITIALIZED;
}
NtfsDirFindFile(PNTFS_VCB Vcb,
PNTFS_FCB DirectoryFcb,
PWSTR FileToFind,
+ BOOLEAN CaseSensitive,
PNTFS_FCB *FoundFCB)
{
NTSTATUS Status;
ULONGLONG CurrentDir;
UNICODE_STRING File;
PFILE_RECORD_HEADER FileRecord;
- PNTFS_ATTR_CONTEXT DataContext;
ULONGLONG MFTIndex;
+ PWSTR Colon, OldColon;
+ PNTFS_ATTR_CONTEXT DataContext;
+ USHORT Length = 0;
- DPRINT1("NtfsDirFindFile(%p, %p, %S, %p)\n", Vcb, DirectoryFcb, FileToFind, FoundFCB);
+ DPRINT1("NtfsDirFindFile(%p, %p, %S, %s, %p)\n",
+ Vcb,
+ DirectoryFcb,
+ FileToFind,
+ CaseSensitive ? "TRUE" : "FALSE",
+ FoundFCB);
*FoundFCB = NULL;
RtlInitUnicodeString(&File, FileToFind);
CurrentDir = DirectoryFcb->MFTIndex;
- Status = NtfsLookupFileAt(Vcb, &File, &FileRecord, &DataContext, &MFTIndex, CurrentDir);
+ Colon = wcsrchr(FileToFind, L':');
+ if (Colon != NULL)
+ {
+ Length = File.Length;
+ File.Length = (Colon - FileToFind) * sizeof(WCHAR);
+
+ if (_wcsicmp(Colon + 1, L"$DATA") == 0)
+ {
+ OldColon = Colon;
+ Colon[0] = UNICODE_NULL;
+ Colon = wcsrchr(FileToFind, L':');
+ if (Colon != NULL)
+ {
+ Length = File.Length;
+ File.Length = (Colon - FileToFind) * sizeof(WCHAR);
+ }
+ else
+ {
+ Colon = OldColon;
+ Colon[0] = L':';
+ }
+ }
+
+ /* Skip colon */
+ ++Colon;
+ DPRINT1("Will now look for file '%wZ' with stream '%S'\n", &File, Colon);
+ }
+
+ Status = NtfsLookupFileAt(Vcb, &File, CaseSensitive, &FileRecord, &MFTIndex, CurrentDir);
if (!NT_SUCCESS(Status))
{
return Status;
}
- Status = NtfsMakeFCBFromDirEntry(Vcb, DirectoryFcb, &File, FileRecord, MFTIndex, FoundFCB);
+ if (Length != 0)
+ {
+ File.Length = Length;
+ }
+
+ if ((FileRecord->Flags & FRH_DIRECTORY) && Colon != 0)
+ {
+ return STATUS_INVALID_PARAMETER;
+ }
+ else if (Colon != 0)
+ {
+ Status = FindAttribute(Vcb, FileRecord, AttributeData, Colon, wcslen(Colon), &DataContext, NULL);
+ if (!NT_SUCCESS(Status))
+ {
+ return STATUS_OBJECT_NAME_NOT_FOUND;
+ }
+ ReleaseAttributeContext(DataContext);
+ }
+
+ Status = NtfsMakeFCBFromDirEntry(Vcb, DirectoryFcb, &File, Colon, FileRecord, MFTIndex, FoundFCB);
ExFreePoolWithTag(FileRecord, TAG_NTFS);
return Status;
NtfsGetFCBForFile(PNTFS_VCB Vcb,
PNTFS_FCB *pParentFCB,
PNTFS_FCB *pFCB,
- const PWSTR pFileName)
+ PCWSTR pFileName,
+ BOOLEAN CaseSensitive)
{
NTSTATUS Status;
WCHAR pathName [MAX_PATH];
WCHAR elementName [MAX_PATH];
- PWCHAR currentElement;
+ PCWSTR currentElement;
PNTFS_FCB FCB;
PNTFS_FCB parentFCB;
- DPRINT("NtfsGetFCBForFile(%p, %p, %p, '%S')\n",
+ DPRINT("NtfsGetFCBForFile(%p, %p, %p, '%S', %s)\n",
Vcb,
pParentFCB,
pFCB,
- pFileName);
+ pFileName,
+ CaseSensitive ? "TRUE" : "FALSE");
/* Dummy code */
// FCB = NtfsOpenRootFCB(Vcb);
parentFCB = NULL;
- /* Parse filename and check each path element for existance and access */
+ /* Parse filename and check each path element for existence and access */
while (NtfsGetNextPathElement(currentElement) != 0)
{
/* Skip blank directory levels */
NtfsGetNextPathElement(currentElement) - currentElement);
DPRINT(" elementName:%S\n", elementName);
- Status = NtfsDirFindFile(Vcb, parentFCB, elementName, &FCB);
+ Status = NtfsDirFindFile(Vcb, parentFCB, elementName, CaseSensitive, &FCB);
if (Status == STATUS_OBJECT_NAME_NOT_FOUND)
{
*pParentFCB = parentFCB;
return STATUS_SUCCESS;
}
+
+NTSTATUS
+NtfsReadFCBAttribute(PNTFS_VCB Vcb,
+ PNTFS_FCB pFCB,
+ ULONG Type,
+ PCWSTR Name,
+ ULONG NameLength,
+ PVOID * Data)
+{
+ NTSTATUS Status;
+ PFILE_RECORD_HEADER FileRecord;
+ PNTFS_ATTR_CONTEXT AttrCtxt;
+ ULONGLONG AttrLength;
+
+ FileRecord = ExAllocatePoolWithTag(NonPagedPool,
+ Vcb->NtfsInfo.BytesPerFileRecord,
+ TAG_NTFS);
+ if (FileRecord == NULL)
+ {
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ Status = ReadFileRecord(Vcb, pFCB->MFTIndex, FileRecord);
+ if (!NT_SUCCESS(Status))
+ {
+ ExFreePoolWithTag(FileRecord, TAG_NTFS);
+ return Status;
+ }
+
+ Status = FindAttribute(Vcb, FileRecord, Type, Name, NameLength, &AttrCtxt, NULL);
+ if (!NT_SUCCESS(Status))
+ {
+ ExFreePoolWithTag(FileRecord, TAG_NTFS);
+ return Status;
+ }
+
+ AttrLength = AttributeDataLength(&AttrCtxt->Record);
+ *Data = ExAllocatePoolWithTag(NonPagedPool, AttrLength, TAG_NTFS);
+ if (*Data == NULL)
+ {
+ ReleaseAttributeContext(AttrCtxt);
+ ExFreePoolWithTag(FileRecord, TAG_NTFS);
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ ReadAttribute(Vcb, AttrCtxt, 0, *Data, AttrLength);
+
+ ReleaseAttributeContext(AttrCtxt);
+ ExFreePoolWithTag(FileRecord, TAG_NTFS);
+
+ return STATUS_SUCCESS;
+}
+
/* EOF */
projects / reactos.git / blobdiff