*	normalized pathname changes.
 *
 *	Tcl has no control over (2) and (3), so each registered filesystem must
 *	call Tcl_FSMountsChnaged in each of those circumstances.
 *
 *	The reason for the exception in 2,3 for the native filesystem is that
 *	the native filesystem claims every file without determining whether
 *	whether the file exists, or even whether the pathname makes sense.
 *
 *----------------------------------------------------------------------
 */

void
Tcl_FSMountsChanged(
    TCL_UNUSED(const Tcl_Filesystem *) /*fsPtr*/)

 *	this is implemented in the C library as a thread-local value , but this
 *	is *really* unsafe to assume!
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Modifies the the Tcl error code value.
 *
 *----------------------------------------------------------------------
 */

void
Tcl_SetErrno(
    int err)			/* The new value. */

	    retVal = fsPtr->internalToNormalizedProc(retCd);
	    Tcl_IncrRefCount(retVal);
	}

	if (retVal == NULL) {
	    /*
	     * The current directory could not not determined.  Reset the
	     * current direcory to ensure, for example, that 'pwd' does actually
	     * throw the correct error in Tcl.  This is tested for in the test
	     * suite on unix.
	     */

	    FsUpdateCwd(NULL, NULL);
	    goto cdDidNotChange;

	    TclFSGetCwdProc2 *proc2 = (TclFSGetCwdProc2 *) fsPtr->getCwdProc;

	    cd = proc2(oldcd);
	    if (cd != oldcd) {
		/*
		 * Call getCwdProc() and store the resulting internal handle to
		 * compare things with it later.  This might might not be
		 * exactly the same string as that of the fully normalized
		 * pathname.  For example, for the Windows internal handle the
		 * separator is the backslash character.  On Unix it might well
		 * be true that the internal handle is the fully normalized
		 * pathname and one could simply use:
		 *	cd = Tcl_FSGetNativePath(pathPtr);
		 * but this can't be guaranteed in the general case.  In fact,

    /*
     * Determine which filesystem contains the temporary copy of the file.
     */

    if (tvdlPtr->divertedFilesystem == NULL) {
	/*
	 * Use the function for the native filsystem, which works works even at
	 * this late stage.
	 */

	TclpDeleteFile(tvdlPtr->divertedFileNativeRep);
	NativeFreeInternalRep(tvdlPtr->divertedFileNativeRep);
    } else {
	/*

 *----------------------------------------------------------------------
 */

void *
Tcl_FindSymbol(
    Tcl_Interp *interp,		/* The relevant interpreter. */
    Tcl_LoadHandle loadHandle,	/* A handle for the loaded object. */
    const char *symbol)		/* The name name of the symbol to resolve. */
{
    return loadHandle->findSymbolProcPtr(interp, loadHandle, symbol);
}

/*
 *----------------------------------------------------------------------
 *

				/* If not NULL, a  place to store a pointer to
				 * the filesystem for this pathname when it is
				 * an absolute pathname. */
    Tcl_Size *driveNameLengthPtr,
				/* If not NULL, a place to store the length of
				 * the volume name if the pathname is absolute. */
    Tcl_Obj **driveNameRef)	/* If not NULL, a place to store a pointer to
				 * an object having its its refCount already
				 * incremented, and contining the name of the
				 * volume if the pathname is absolute. */
{
    FilesystemRecord *fsRecPtr;
    Tcl_PathType type = TCL_PATH_RELATIVE;

    /*
     * Determine whether the given pathname is an absolute pathname on some
     * filesystem other than the native filesystem.
     */

    fsRecPtr = FsGetFirstFilesystem();
    Claim();
    while (fsRecPtr != NULL) {
	/*
	 * Skip the the native filesystem because otherwise some of the tests
	 * in the Tcl testsuite might fail because some of the tests
	 * artificially change the current platform (between win, unix) but the
	 * list of volumes obtained by calling fsRecPtr->fsPtr->listVolumesProc
	 * reflects the current (real) platform only. In particular, on Unix
	 * '/' matchs the beginning of certain absolute Windows pathnames
	 * starting '//' and those tests go wrong.
	 *

			}
			break;
		    }
		}
		Tcl_DecrRefCount(thisFsVolumes);
		if (type == TCL_PATH_ABSOLUTE) {
		    /*
		     * No need to to examine additional filesystems.
		     */

		    break;
		}
	    }
	}
	fsRecPtr = fsRecPtr->nextPtr;

}

/*
 *---------------------------------------------------------------------------
 *
 * Tcl_FSCopyDirectory --
 *
 *	If both pathnames correspond to the the same filesystem, calls
 *	'copyDirectoryProc' of that filesystem.
 *
 * Results:
 *	A standard Tcl return code, or -1 if no 'copyDirectoryProc' is found.
 *
 * Side effects:
 *	A directory may be copied. POSIX error 'EXDEV' is set if no

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 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);

    if (fsPtr == NULL) {
	Tcl_SetErrno(ENOENT);