static NTSTATUS
CdfsGetBothDirectoryInformation(PFCB Fcb,
PDEVICE_EXTENSION DeviceExt,
PFILE_BOTH_DIR_INFORMATION Info,
ULONG BufferLength)
{
ULONG Length;
DPRINT("CdfsGetBothDirectoryInformation() called\n");
UNREFERENCED_PARAMETER(DeviceExt);
Length = wcslen(Fcb->ObjectName) * sizeof(WCHAR);
if ((sizeof (FILE_BOTH_DIR_INFORMATION) + Length) > BufferLength)
return(STATUS_BUFFER_OVERFLOW);
Info->FileNameLength = Length;
Info->NextEntryOffset =
ROUND_UP(sizeof(FILE_BOTH_DIR_INFORMATION) + Length, sizeof(ULONG));
RtlCopyMemory(Info->FileName, Fcb->ObjectName, Length);
/* Convert file times */
CdfsDateTimeToSystemTime(Fcb,
&Info->CreationTime);
Info->LastWriteTime = Info->CreationTime;
Info->ChangeTime = Info->CreationTime;
/* Convert file flags */
CdfsFileFlagsToAttributes(Fcb,
&Info->FileAttributes);
if (CdfsFCBIsDirectory(Fcb))
{
Info->EndOfFile.QuadPart = 0;
Info->AllocationSize.QuadPart = 0;
}
else
{
Info->EndOfFile.QuadPart = Fcb->Entry.DataLengthL;
/* Make AllocSize a rounded up multiple of the sector size */
Info->AllocationSize.QuadPart = ROUND_UP(Fcb->Entry.DataLengthL, BLOCKSIZE);
}
// Info->FileIndex=;
Info->EaSize = 0;
/* Copy short name */
ASSERT(Fcb->ShortNameU.Length / sizeof(WCHAR) <= 12);
Info->ShortNameLength = (CCHAR)Fcb->ShortNameU.Length;
RtlCopyMemory(Info->ShortName, Fcb->ShortNameU.Buffer, Fcb->ShortNameU.Length);
return(STATUS_SUCCESS);
}
VOID
CdfsReleaseFCB(PDEVICE_EXTENSION Vcb,
PFCB Fcb)
{
KIRQL oldIrql;
DPRINT("releasing FCB at %x: %S, refCount:%d\n",
Fcb,
Fcb->PathName,
Fcb->RefCount);
KeAcquireSpinLock(&Vcb->FcbListLock, &oldIrql);
Fcb->RefCount--;
if (Fcb->RefCount <= 0 && !CdfsFCBIsDirectory(Fcb))
{
RemoveEntryList(&Fcb->FcbListEntry);
CdfsDestroyFCB(Fcb);
}
KeReleaseSpinLock(&Vcb->FcbListLock, oldIrql);
}
/*
* 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);
}
NTSTATUS
CdfsAttachFCBToFileObject(PDEVICE_EXTENSION Vcb,
PFCB Fcb,
PFILE_OBJECT FileObject)
{
PCCB newCCB;
newCCB = ExAllocatePoolWithTag(NonPagedPool, sizeof(CCB), TAG_CCB);
if (newCCB == NULL)
{
return(STATUS_INSUFFICIENT_RESOURCES);
}
memset(newCCB, 0, sizeof(CCB));
FileObject->ReadAccess = TRUE;
FileObject->WriteAccess = FALSE;
FileObject->DeleteAccess = FALSE;
FileObject->SectionObjectPointer = &Fcb->SectionObjectPointers;
FileObject->FsContext = Fcb;
FileObject->FsContext2 = newCCB;
newCCB->PtrFileObject = FileObject;
Fcb->DevExt = Vcb;
if (CdfsFCBIsDirectory(Fcb))
{
CcInitializeCacheMap(FileObject,
(PCC_FILE_SIZES)(&Fcb->RFCB.AllocationSize),
FALSE,
&(CdfsGlobalData->CacheMgrCallbacks),
Fcb);
Fcb->Flags |= FCB_CACHE_INITIALIZED;
}
DPRINT("file open: fcb:%x file size: %d\n", Fcb, Fcb->Entry.DataLengthL);
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);
}
NTSTATUS
CdfsGetFCBForFile(PDEVICE_EXTENSION Vcb,
PFCB *pParentFCB,
PFCB *pFCB,
PUNICODE_STRING FileName)
{
UNICODE_STRING PathName;
UNICODE_STRING ElementName;
NTSTATUS Status;
WCHAR pathName [MAX_PATH];
WCHAR elementName [MAX_PATH];
PWCHAR currentElement;
PFCB FCB;
PFCB parentFCB;
DPRINT("CdfsGetFCBForFile(%x, %x, %x, '%wZ')\n",
Vcb,
pParentFCB,
pFCB,
FileName);
/* Trivial case, open of the root directory on volume */
if (FileName->Buffer[0] == L'\0' || wcscmp(FileName->Buffer, L"\\") == 0)
{
DPRINT("returning root FCB\n");
FCB = CdfsOpenRootFCB(Vcb);
*pFCB = FCB;
*pParentFCB = NULL;
return((FCB != NULL) ? STATUS_SUCCESS : STATUS_OBJECT_PATH_NOT_FOUND);
}
else
{
currentElement = &FileName->Buffer[1];
wcscpy (pathName, L"\\");
FCB = CdfsOpenRootFCB (Vcb);
}
parentFCB = NULL;
/* Parse filename and check each path element for existance and access */
while (CdfsGetNextPathElement(currentElement) != 0)
{
/* Skip blank directory levels */
if ((CdfsGetNextPathElement(currentElement) - currentElement) == 0)
{
currentElement++;
continue;
}
DPRINT("Parsing, currentElement:%S\n", currentElement);
DPRINT(" parentFCB:%x FCB:%x\n", parentFCB, FCB);
/* Descend to next directory level */
if (parentFCB)
{
CdfsReleaseFCB(Vcb, parentFCB);
parentFCB = NULL;
}
/* fail if element in FCB is not a directory */
if (!CdfsFCBIsDirectory(FCB))
{
DPRINT("Element in requested path is not a directory\n");
CdfsReleaseFCB(Vcb, FCB);
FCB = 0;
*pParentFCB = NULL;
*pFCB = NULL;
return(STATUS_OBJECT_PATH_NOT_FOUND);
}
parentFCB = FCB;
/* Extract next directory level into dirName */
CdfsWSubString(pathName,
FileName->Buffer,
CdfsGetNextPathElement(currentElement) - FileName->Buffer);
DPRINT(" pathName:%S\n", pathName);
RtlInitUnicodeString(&PathName, pathName);
FCB = CdfsGrabFCBFromTable(Vcb, &PathName);
if (FCB == NULL)
{
CdfsWSubString(elementName,
currentElement,
CdfsGetNextPathElement(currentElement) - currentElement);
DPRINT(" elementName:%S\n", elementName);
RtlInitUnicodeString(&ElementName, elementName);
Status = CdfsDirFindFile(Vcb,
parentFCB,
&ElementName,
&FCB);
if (Status == STATUS_OBJECT_NAME_NOT_FOUND)
{
*pParentFCB = parentFCB;
*pFCB = NULL;
currentElement = CdfsGetNextPathElement(currentElement);
if (*currentElement == L'\0' || CdfsGetNextPathElement(currentElement + 1) == 0)
{
return(STATUS_OBJECT_NAME_NOT_FOUND);
}
else
{
return(STATUS_OBJECT_PATH_NOT_FOUND);
}
}
else if (!NT_SUCCESS(Status))
{
CdfsReleaseFCB(Vcb, parentFCB);
*pParentFCB = NULL;
*pFCB = NULL;
return(Status);
}
}
currentElement = CdfsGetNextPathElement(currentElement);
}
*pParentFCB = parentFCB;
*pFCB = FCB;
return STATUS_SUCCESS;
}
NTSTATUS
CdfsMakeFCBFromDirEntry(PVCB Vcb,
PFCB DirectoryFCB,
PWSTR LongName,
PWSTR ShortName,
PDIR_RECORD Record,
ULONG DirectorySector,
ULONG DirectoryOffset,
PFCB * fileFCB)
{
WCHAR pathName[MAX_PATH];
PFCB rcFCB;
ULONG Size;
if (LongName [0] != 0 && wcslen (DirectoryFCB->PathName) +
sizeof(WCHAR) + wcslen (LongName) > MAX_PATH)
{
return(STATUS_OBJECT_NAME_INVALID);
}
wcscpy(pathName, DirectoryFCB->PathName);
if (!CdfsFCBIsRoot(DirectoryFCB))
{
wcscat(pathName, L"\\");
}
if (LongName[0] != 0)
{
wcscat(pathName, LongName);
}
else
{
WCHAR entryName[MAX_PATH];
CdfsGetDirEntryName(Vcb, Record, entryName);
wcscat(pathName, entryName);
}
rcFCB = CdfsCreateFCB(pathName);
memcpy(&rcFCB->Entry, Record, sizeof(DIR_RECORD));
/* Copy short name into FCB */
rcFCB->ShortNameU.Length = wcslen(ShortName) * sizeof(WCHAR);
rcFCB->ShortNameU.MaximumLength = rcFCB->ShortNameU.Length;
rcFCB->ShortNameU.Buffer = rcFCB->ShortNameBuffer;
wcscpy(rcFCB->ShortNameBuffer, ShortName);
Size = rcFCB->Entry.DataLengthL;
rcFCB->RFCB.FileSize.QuadPart = Size;
rcFCB->RFCB.ValidDataLength.QuadPart = Size;
rcFCB->RFCB.AllocationSize.QuadPart = ROUND_UP(Size, BLOCKSIZE);
if (CdfsFCBIsDirectory(rcFCB))
{
CdfsFCBInitializeCache(Vcb, rcFCB);
}
rcFCB->IndexNumber.u.HighPart = DirectorySector;
rcFCB->IndexNumber.u.LowPart = DirectoryOffset;
rcFCB->RefCount++;
CdfsAddFCBToTable(Vcb, rcFCB);
*fileFCB = rcFCB;
DPRINT("%S %d %I64d\n", LongName, Size, rcFCB->RFCB.AllocationSize.QuadPart);
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;
}