newDirFd,
		newPathPtr,
		newPathLen,
	)
	return errnoErr(errno)
}

func Truncate(path string, length int64) error {
	if path == "" {
		return EINVAL
	}
	fd, err := Open(path, O_WRONLY, 0)
	if err != nil {
		return err
	}
	defer Close(fd)
	return Ftruncate(fd, length)
}

func Ftruncate(fd int, length int64) error {
	errno := fd_filestat_set_size(int32(fd), filesize(length))

//sys	Flock(fd int, how int) (err error)
//sys	Fpathconf(fd int, name int) (val int, err error)
//sys	Fsync(fd int) (err error)
//  Fsync is not called for os.File.Sync(). Please see internal/poll/fd_fsync_darwin.go
//sys	Ftruncate(fd int, length int64) (err error)
//sys	Getdtablesize() (size int)
//sysnb	Getegid() (egid int)
//sysnb	Geteuid() (uid int)
//sysnb	Getgid() (gid int)
//sysnb	Getpgid(pid int) (pgid int, err error)

//sys	Fstat(fd int, stat *Stat_t) (err error)
//sys	Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
//sys	Fstatfs(fd int, stat *Statfs_t) (err error)
//sys	Fsync(fd int) (err error)
//sys	Ftruncate(fd int, length int64) (err error)
//sys	getdirentries(fd int, buf []byte, basep *uint64) (n int, err error)
//sys	Getdtablesize() (size int)
//sysnb	Getegid() (egid int)
//sysnb	Geteuid() (uid int)

//sys	Stat(path string, stat *Stat_t) (err error)
//sys	Symlink(path string, link string) (err error)
//sys	Sync() (err error)
//sys	Truncate(path string, length int64) (err error)
//sys	Fsync(fd int) (err error)
//sys	Ftruncate(fd int, length int64) (err error)
//sys	Umask(newmask int) (oldmask int)
//sys	Unlink(path string) (err error)
//sys	utimes(path string, times *[2]Timeval) (err error)

//sys	Fpathconf(fd int, name int) (val int, err error)
//sys	Fstat(fd int, stat *Stat_t) (err error)
//sys	Fstatfs(fd int, buf *Statfs_t) (err error)
//sys	Ftruncate(fd int, length int64) (err error)
//sysnb	Getgid() (gid int)
//sysnb	Getpid() (pid int)
//sys	Geteuid() (euid int)
//sys	Getegid() (egid int)
//sys	Getppid() (ppid int)

func Ftruncate(fd int, length int64) (err error) {
	_, _, e1 := syscall6(abi.FuncPCABI0(libc_ftruncate_trampoline), uintptr(fd), 0, uintptr(length), uintptr(length>>32), 0, 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

func libc_ftruncate_trampoline()

//go:cgo_import_dynamic libc_ftruncate ftruncate "libc.so"

//go:cgo_import_dynamic libc_Fpathconf fpathconf "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Fstat fstat "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Fstatfs fstatfs "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Ftruncate ftruncate "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Getgid getgid "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Getpid getpid "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Geteuid geteuid "libc.a/shr_64.o"

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Ftruncate(fd int, length int64) (err error) {
	_, _, e1 := syscall(abi.FuncPCABI0(libc_ftruncate_trampoline), uintptr(fd), uintptr(length), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

func libc_ftruncate_trampoline()

//go:cgo_import_dynamic libc_ftruncate ftruncate "libc.so"

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Ftruncate(fd int, length int64) (err error) {
	_, _, e1 := syscall(abi.FuncPCABI0(libc_ftruncate_trampoline), uintptr(fd), uintptr(length), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

func libc_ftruncate_trampoline()

//go:cgo_import_dynamic libc_ftruncate ftruncate "libc.so"

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Ftruncate(fd int, length int64) (err error) {
	_, _, e1 := syscall(abi.FuncPCABI0(libc_ftruncate_trampoline), uintptr(fd), uintptr(length), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

func libc_ftruncate_trampoline()

//go:cgo_import_dynamic libc_ftruncate ftruncate "libc.so"

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT