* generic code because otherwise every filesystem implementation of
     * Tcl_FSMatchInDirectory has to do it.
     */

    cwd = Tcl_FSGetCwd(NULL);
    if (cwd == NULL) {
	if (interp != NULL) {
	    Tcl_SetObjResult(interp, Tcl_NewStringObj(
		    "glob couldn't determine the current working directory",
	    TclPrintfResult(interp,
		    "glob couldn't determine the current working directory");
		    -1));
	}
	return TCL_ERROR;
    }

    fsPtr = Tcl_FSGetFileSystemForPath(cwd);
    if (fsPtr != NULL && fsPtr->matchInDirectoryProc != NULL) {
	TclNewObj(tmpResultPtr);

	}
    }

    Tcl_Free((void *)modeArgv);

    if (!gotRW) {
	if (interp != NULL) {
	    Tcl_SetObjResult(interp, Tcl_NewStringObj(
		    "access mode must include either RDONLY, RDWR, or WRONLY",
	    TclPrintfResult(interp,
		    "access mode must include either RDONLY, RDWR, or WRONLY");
		    -1));
	}
	return -1;
    }
    return mode;
}

/*

	/*
	 * Try to delete the file we probably created and then exit.
	 */

	Tcl_FSDeleteFile(copyToPtr);
	Tcl_DecrRefCount(copyToPtr);
	if (interp) {
	    Tcl_SetObjResult(interp, Tcl_NewStringObj(
		    "couldn't load from current filesystem", -1));
	    TclPrintfResult(interp, "couldn't load from current filesystem");
	}
	return TCL_ERROR;
    }

    if (TclCrossFilesystemCopy(interp, pathPtr, copyToPtr) != TCL_OK) {
	Tcl_FSDeleteFile(copyToPtr);
	Tcl_DecrRefCount(copyToPtr);

int
Tcl_FSUnloadFile(
    Tcl_Interp *interp,		/* The relevant interpreter. */
    Tcl_LoadHandle handle)	/* A handle for the object to unload. */
{
    if (handle->unloadFileProcPtr == NULL) {
	if (interp != NULL) {
	    Tcl_SetObjResult(interp, Tcl_NewStringObj(
		    "cannot unload: filesystem does not support unloading",
	    TclPrintfResult(interp,
		    "cannot unload: filesystem does not support unloading");
		    -1));
	}
	return TCL_ERROR;
    }
    if (handle->unloadFileProcPtr != NULL) {
	handle->unloadFileProcPtr(handle);
    }
    return TCL_OK;