static FilesystemRecord *filesystemList = &nativeFilesystemRecord;
TCL_DECLARE_MUTEX(filesystemMutex)

/*
 * A files-system indepent sense of the current directory.
 */

static Tcl_Obj *cwdPathPtr = NULL;
static size_t cwdPathEpoch = 0;	    /* The pathname of the current directory */
static void *cwdClientData = NULL;
TCL_DECLARE_MUTEX(cwdMutex)

static Tcl_ThreadDataKey fsDataKey;

/*
 * When a temporary copy of a file is created on the native filesystem in order

TclFSNormalizeToUniquePath(
    Tcl_Interp *interp,		/* Used for error messages. */
    Tcl_Obj *pathPtr,		/* An Pathname to normalize in-place.  Must be
				 * unshared. */
    int startAt)		/* Offset the string of pathPtr to start at.
				 * Must either be 0 or offset of a directory
				 * separator at the end of a pathname part that
				 * is already normalized, I.e. not the index of
				 * the byte just after the separator.  */
{
    FilesystemRecord *fsRecPtr, *firstFsRecPtr;

    Tcl_Size i;
    int isVfsPath = 0;
    const char *path;

    } else {
	Tcl_SetErrno(ENOENT);
    }

    if (retVal == 0) {

	 /* Assume that the cwd was actually changed to the normalized value
	  * just calculated, and cache that information.  */

	/*
	 * If the filesystem epoch changed recently, the normalized pathname or
	 * its internal handle may be different from what was found above.
	 * This can easily be the case with scripted documents . Therefore get
	 * the normalized pathname again. The correct value will have been
	 * cached as a result of the Tcl_FSGetFileSystemForPath call, above.

     * load completely on platforms which allow proper unloading of code.
     */

    tvdlPtr->loadHandle = newLoadHandle;
    tvdlPtr->unloadProcPtr = newUnloadProcPtr;

    if (copyFsPtr != &tclNativeFilesystem) {
	/* refCount of copyToPtr is already incremented.  */
	tvdlPtr->divertedFile = copyToPtr;

	/*
	 * This is the filesystem for the temporary file the object was loaded
	 * from.  A reference to copyToPtr is already stored in
	 * tvdlPtr->divertedFile, so need need to increment the refCount again.
	 */

 */

int
Tcl_FSRemoveDirectory(
    Tcl_Obj *pathPtr,		/* The pathname of the directory to be removed. */
    int recursive,		/* If zero, removes only an empty directory.
				 * Otherwise, removes the directory and all its
				 * contents.  */
    Tcl_Obj **errorPtr)		/* If not NULL and an error occurs, stores a
				 * place to store a pointer to a new
				 * object having a refCount of 1 and containing
				 * the name of the file that produced an error. */
{
    const Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);

	    continue;
	}

	if (fsRecPtr->fsPtr->pathInFilesystemProc(pathPtr, &clientData)!=-1) {
	    /* This is the filesystem for pathPtr.  Assume the type of pathPtr
	     * hasn't been changed by the above call to the
	     * pathInFilesystemProc, and cache this result in the internal
	     * representation of pathPtr.  */

	    TclFSSetPathDetails(pathPtr, fsRecPtr->fsPtr, clientData);
	    Disclaim();
	    return fsRecPtr->fsPtr;
	}
    }
    Disclaim();