VOID
NtfsSetFileObject (
IN PFILE_OBJECT FileObject,
IN TYPE_OF_OPEN TypeOfOpen,
IN PSCB Scb,
IN PCCB Ccb OPTIONAL
)
/*++
Routine Description:
This routine sets the file system pointers within the file object
Arguments:
FileObject - Supplies a pointer to the file object being modified.
TypeOfOpen - Supplies the type of open denoted by the file object.
This is only used by this procedure for sanity checking.
Scb - Supplies a pointer to Scb for the file object.
Ccb - Optionally supplies a pointer to a ccb
Return Value:
None.
--*/
{
ASSERT_FILE_OBJECT( FileObject );
ASSERT_SCB( Scb );
ASSERT_OPTIONAL_CCB( Ccb );
PAGED_CODE();
DebugTrace( +1, Dbg, ("NtfsSetFileObject, FileObject = %08lx\n", FileObject) );
//
// Load up the FileObject fields.
//
FileObject->FsContext = Scb;
FileObject->FsContext2 = Ccb;
FileObject->Vpb = Scb->Vcb->Vpb;
//
// Typically the I/O manager has already set this flag correctly. The notable
// exception is when the user did an open by file ID of file record 3, so
// we're doing a DASD open, but the I/O manager didn't notice, since it only
// checks for a zero length filename.
//
if (TypeOfOpen == UserVolumeOpen) {
SetFlag( FileObject->Flags, FO_VOLUME_OPEN );
}
//
// Now store TypeOfOpen if there is a Ccb
//
ASSERT((Ccb != NULL) || (TypeOfOpen == StreamFileOpen) || (TypeOfOpen == UnopenedFileObject));
if (Ccb != NULL) {
Ccb->TypeOfOpen = (UCHAR)TypeOfOpen;
}
//
// If this file has the temporary attribute bit set, don't lazy
// write it unless absolutely necessary.
//
if (FlagOn( Scb->ScbState, SCB_STATE_TEMPORARY )) {
SetFlag( FileObject->Flags, FO_TEMPORARY_FILE );
}
//
// And return to our caller
//
DebugTrace( -1, Dbg, ("NtfsSetFileObject -> VOID\n") );
return;
}
BOOLEAN
UdfFastQueryBasicInfo (
IN PFILE_OBJECT FileObject,
IN BOOLEAN Wait,
IN OUT PFILE_BASIC_INFORMATION Buffer,
OUT PIO_STATUS_BLOCK IoStatus,
IN PDEVICE_OBJECT DeviceObject
)
/*++
Routine Description:
This routine is for the fast query call for basic file information.
Arguments:
FileObject - Supplies the file object used in this operation
Wait - Indicates if we are allowed to wait for the information
Buffer - Supplies the output buffer to receive the basic information
IoStatus - Receives the final status of the operation
Return Value:
BOOLEAN - TRUE if the operation succeeded and FALSE if the caller
needs to take the long route.
--*/
{
BOOLEAN Result = FALSE;
TYPE_OF_OPEN TypeOfOpen;
PFCB Fcb;
PCCB Ccb;
PAGED_CODE();
ASSERT_FILE_OBJECT( FileObject );
FsRtlEnterFileSystem();
//
// Decode the file object to find the type of open and the data
// structures.
//
TypeOfOpen = UdfDecodeFileObject( FileObject, &Fcb, &Ccb );
//
// We only support this request on user file or directory objects.
//
ASSERT( FlagOn( Fcb->FcbState, FCB_STATE_INITIALIZED ));
if (TypeOfOpen != UserFileOpen && TypeOfOpen != UserDirectoryOpen) {
FsRtlExitFileSystem();
return FALSE;
}
//
// Acquire the file shared to access the Fcb.
//
if (!ExAcquireResourceShared( Fcb->Resource, Wait )) {
FsRtlExitFileSystem();
return FALSE;
}
//
// Use a try-finally to facilitate cleanup.
//
try {
//
// Only deal with 'good' Fcb's.
//
if (UdfVerifyFcbOperation( NULL, Fcb )) {
//
// Fill in the input buffer from the Fcb fields.
//
Buffer->CreationTime = Fcb->Timestamps.CreationTime;
Buffer->LastWriteTime =
Buffer->ChangeTime = Fcb->Timestamps.ModificationTime;
Buffer->LastAccessTime = Fcb->Timestamps.AccessTime;
Buffer->FileAttributes = Fcb->FileAttributes | UdfGetExtraFileAttributes( Ccb );
//
// Update the IoStatus block with the size of this data.
//
IoStatus->Status = STATUS_SUCCESS;
IoStatus->Information = sizeof( FILE_BASIC_INFORMATION );
Result = TRUE;
}
} finally {
ExReleaseResource( Fcb->Resource );
FsRtlExitFileSystem();
}
return Result;
}
BOOLEAN
CdFastQueryNetworkInfo (
__in PFILE_OBJECT FileObject,
__in BOOLEAN Wait,
__out PFILE_NETWORK_OPEN_INFORMATION Buffer,
__out PIO_STATUS_BLOCK IoStatus,
__in PDEVICE_OBJECT DeviceObject
)
/*++
Routine Description:
This routine is for the fast query call for network file information.
Arguments:
FileObject - Supplies the file object used in this operation
Wait - Indicates if we are allowed to wait for the information
Buffer - Supplies the output buffer to receive the basic information
IoStatus - Receives the final status of the operation
Return Value:
BOOLEAN - TRUE if the operation succeeded and FALSE if the caller
needs to take the long route.
--*/
{
BOOLEAN Result = FALSE;
TYPE_OF_OPEN TypeOfOpen;
PFCB Fcb;
PAGED_CODE();
UNREFERENCED_PARAMETER( DeviceObject );
ASSERT_FILE_OBJECT( FileObject );
FsRtlEnterFileSystem();
//
// Decode the file object to find the type of open and the data
// structures.
//
TypeOfOpen = CdFastDecodeFileObject( FileObject, &Fcb );
//
// We only support this request on user file or directory objects.
//
if ((TypeOfOpen != UserFileOpen) &&
((TypeOfOpen != UserDirectoryOpen) || !FlagOn( Fcb->FcbState, FCB_STATE_INITIALIZED))) {
FsRtlExitFileSystem();
return FALSE;
}
//
// Acquire the file shared to access the Fcb.
//
if (!ExAcquireResourceSharedLite( Fcb->Resource, Wait )) {
FsRtlExitFileSystem();
return FALSE;
}
//
// Use a try-finally to facilitate cleanup.
//
try {
//
// Only deal with 'good' Fcb's.
//
if (CdVerifyFcbOperation( NULL, Fcb )) {
//
// Fill in the input buffer from the Fcb fields.
//
Buffer->CreationTime.QuadPart =
Buffer->LastWriteTime.QuadPart =
Buffer->ChangeTime.QuadPart = Fcb->CreationTime;
Buffer->LastAccessTime.QuadPart = 0;
Buffer->FileAttributes = Fcb->FileAttributes;
//
// Check whether this is a directory.
//
if (FlagOn( Fcb->FileAttributes, FILE_ATTRIBUTE_DIRECTORY )) {
Buffer->AllocationSize.QuadPart =
Buffer->EndOfFile.QuadPart = 0;
} else {
Buffer->AllocationSize.QuadPart = Fcb->AllocationSize.QuadPart;
Buffer->EndOfFile.QuadPart = Fcb->FileSize.QuadPart;
}
//
// Update the IoStatus block with the size of this data.
//
IoStatus->Status = STATUS_SUCCESS;
IoStatus->Information = sizeof( FILE_NETWORK_OPEN_INFORMATION );
Result = TRUE;
}
} finally {
ExReleaseResourceLite( Fcb->Resource );
FsRtlExitFileSystem();
}
return Result;
}