TclpFindExecutable(
    const char *argv0)		/* The value of the application's argv[0]
				 * (native). */
{
    Tcl_Encoding encoding;
#ifdef __CYGWIN__
    int length;
    wchar_t buf[PATH_MAX] = L"";
    char name[PATH_MAX * 3 + 1];

    GetModuleFileNameW(NULL, buf, PATH_MAX);
    cygwin_conv_path(3, buf, name, sizeof(name));
    length = strlen(name);
    if ((length > 4) && !strcasecmp(name + length - 4, ".exe")) {
	/* Strip '.exe' part. */
	length -= 4;
    }
    encoding = Tcl_GetEncoding(NULL, NULL);

	/*
	 * Match a file directly.
	 */

	Tcl_Obj *tailPtr;
	const char *nativeTail;

	native = (const char *)Tcl_FSGetNativePath(pathPtr);
	tailPtr = TclPathPart(interp, pathPtr, TCL_PATH_TAIL);
	nativeTail = (const char *)Tcl_FSGetNativePath(tailPtr);
	matchResult = NativeMatchType(interp, native, nativeTail, types);
	if (matchResult == 1) {
	    Tcl_ListObjAppendElement(interp, resultPtr, pathPtr);
	}
	Tcl_DecrRefCount(tailPtr);
	Tcl_DecrRefCount(fileNamePtr);
    } else {

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

int
TclpObjChdir(
    Tcl_Obj *pathPtr)		/* Path to new working directory */
{
    const char *path = (const char *)Tcl_FSGetNativePath(pathPtr);

    if (path == NULL) {
	return -1;
    }
    return chdir(path);
}


 */

int
TclpObjLstat(
    Tcl_Obj *pathPtr,		/* Path of file to stat */
    Tcl_StatBuf *bufPtr)	/* Filled with results of stat call. */
{
    return TclOSlstat((const char *)Tcl_FSGetNativePath(pathPtr), bufPtr);
}

/*
 *---------------------------------------------------------------------------
 *
 * TclpGetNativeCwd --
 *

#else
    if (getcwd(buffer, MAXPATHLEN+1) == NULL) {		/* INTL: Native. */
	return NULL;
    }
#endif /* USEGETWD */

    if ((clientData == NULL) || strcmp(buffer, (const char *) clientData)) {
	char *newCd = (char*)ckalloc(strlen(buffer) + 1);

	strcpy(newCd, buffer);
	return newCd;
    }

    /*
     * No change to pwd.

 */

int
TclpObjStat(
    Tcl_Obj *pathPtr,		/* Path of file to stat */
    Tcl_StatBuf *bufPtr)	/* Filled with results of stat call. */
{
    const char *path = (const char *)Tcl_FSGetNativePath(pathPtr);

    if (path == NULL) {
	return -1;
    }
    return TclOSstat(path, bufPtr);
}

#ifdef S_IFLNK

Tcl_Obj *
TclpObjLink(
    Tcl_Obj *pathPtr,
    Tcl_Obj *toPtr,
    int linkAction)
{
    if (toPtr != NULL) {
	const char *src = (const char *)Tcl_FSGetNativePath(pathPtr);
	const char *target = NULL;

	if (src == NULL) {
	    return NULL;
	}

	/*

	    /*
	     * Target exists; we'll construct the relative path we want below.
	     */

	    Tcl_DecrRefCount(absPtr);
	    Tcl_DecrRefCount(dirPtr);
	} else {
	    target = (const char*)Tcl_FSGetNativePath(toPtr);
	    if (target == NULL) {
		return NULL;
	    }
	    if (access(target, F_OK) == -1) {
		/*
		 * Target doesn't exist.
		 */

	transPtr = Tcl_FSGetTranslatedPath(NULL, pathPtr);
	if (transPtr == NULL) {
	    return NULL;
	}
	Tcl_DecrRefCount(transPtr);

	length = readlink((const char *)Tcl_FSGetNativePath(pathPtr), link, sizeof(link));
	if (length < 0) {
	    return NULL;
	}

	Tcl_ExternalToUtfDString(NULL, link, length, &ds);
	linkPtr = TclDStringToObj(&ds);
	Tcl_IncrRefCount(linkPtr);

    if (strlen(Tcl_DStringValue(&ds)) < len - sizeof(char)) {
	/* See bug [3118489]: NUL in filenames */
	Tcl_DecrRefCount(validPathPtr);
	Tcl_DStringFree(&ds);
	return NULL;
    }
    Tcl_DecrRefCount(validPathPtr);
    nativePathPtr = (char *)ckalloc(len);
    memcpy(nativePathPtr, Tcl_DStringValue(&ds), len);

    Tcl_DStringFree(&ds);
    return nativePathPtr;
}

/*

    /*
     * ASCII representation when running on Unix.
     */

    len = (strlen((const char*) clientData) + 1) * sizeof(char);

    copy = (char *)ckalloc(len);
    memcpy(copy, clientData, len);
    return copy;
}

/*
 *---------------------------------------------------------------------------
 *

 */

int
TclpUtime(
    Tcl_Obj *pathPtr,		/* File to modify */
    struct utimbuf *tval)	/* New modification date structure */
{
    return utime((const char *)Tcl_FSGetNativePath(pathPtr), tval);
}

#ifdef __CYGWIN__

int
TclOSstat(
    const char *name,
    void *cygstat)
{
    struct stat buf;
    Tcl_StatBuf *statBuf = (Tcl_StatBuf *)cygstat;
    int result = stat(name, &buf);

    statBuf->st_mode = buf.st_mode;
    statBuf->st_ino = buf.st_ino;
    statBuf->st_dev = buf.st_dev;
    statBuf->st_rdev = buf.st_rdev;
    statBuf->st_nlink = buf.st_nlink;

int
TclOSlstat(
    const char *name,
    void *cygstat)
{
    struct stat buf;
    Tcl_StatBuf *statBuf = (Tcl_StatBuf *)cygstat;
    int result = lstat(name, &buf);

    statBuf->st_mode = buf.st_mode;
    statBuf->st_ino = buf.st_ino;
    statBuf->st_dev = buf.st_dev;
    statBuf->st_rdev = buf.st_rdev;
    statBuf->st_nlink = buf.st_nlink;