if !ok {
		return "UNKNOWN"
	}
	return fsTypeString
}

// GetInfo returns total and free bytes available in a directory, e.g. `/`.
func GetInfo(path string, _ bool) (info Info, err error) {
	s := syscall.Statfs_t{}
	err = syscall.Statfs(path, &s)
	if err != nil {
		return Info{}, err
	}
	reservedBlocks := s.Bfree - s.Bavail
	info = Info{
		Total:  uint64(s.Frsize) * (s.Blocks - reservedBlocks),

type Rusage C.struct_rusage

type Rlimit C.struct_rlimit

type _Pid_t C.pid_t

type _Gid_t C.gid_t

// Files

type Flock_t C.struct_flock

type Stat_t C.struct_stat

type Statfs_t C.struct_statfs

type Fsid64_t C.fsid64_t

type StTimespec_t C.st_timespec_t

type Dirent C.struct_dirent

// Sockets

type RawSockaddrInet4 C.struct_sockaddr_in

//sys	EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error)

func Fstatfs(fd int, buf *Statfs_t) (err error) {
	_, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
	if e != 0 {
		err = errnoErr(e)
	}
	return
}

func Statfs(path string, buf *Statfs_t) (err error) {
	p, err := BytePtrFromString(path)
	if err != nil {
		return err
	}

	_SYS_faccessat2 = 439
	_SYS_fchmodat2  = 452
)

//sys	EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_PWAIT
//sys	Fchown(fd int, uid int, gid int) (err error)
//sys	Fstatfs(fd int, buf *Statfs_t) (err error)
//sys	Ftruncate(fd int, length int64) (err error)
//sysnb	Getegid() (egid int)
//sysnb	Geteuid() (euid int)
//sysnb	Getgid() (gid int)
//sysnb	Getuid() (uid int)
//sys	Listen(s int, n int) (err error)

// for the filesystem that path resides upon.
func Info(path string) (int64, int64, int64, int64, int64, int64, error) {
	statfs := &unix.Statfs_t{}
	err := unix.Statfs(path, statfs)
	if err != nil {
		return 0, 0, 0, 0, 0, 0, err
	}

	// Available is blocks available * fragment size
	available := int64(statfs.Bavail) * int64(statfs.Bsize)

	if e != 0 {
		err = e
	}
	return
}

func Fstatfs(fd int, buf *Statfs_t) (err error) {
	_, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
	if e != 0 {
		err = e
	}
	return
}

func Statfs(path string, buf *Statfs_t) (err error) {
	pathp, err := BytePtrFromString(path)
	if err != nil {
		return err
	}

//sys	Fchown(fd int, uid int, gid int) (err error)
//sys	Fstat(fd int, stat *Stat_t) (err error)
//sys	Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_NEWFSTATAT
//sys	Fstatfs(fd int, buf *Statfs_t) (err error)
//sys	Ftruncate(fd int, length int64) (err error)
//sysnb	Getegid() (egid int)
//sysnb	Geteuid() (euid int)
//sysnb	Getgid() (gid int)
//sysnb	Getrlimit(resource int, rlim *Rlimit) (err error)

	Ctim     StTimespec_t
	Blksize  int64
	Blocks   int64
	Vfstype  int32
	Vfs      uint32
	Type     uint32
	Gen      uint32
	Reserved [9]uint32
	Padto_ll uint32
	Size     int64
}

type Statfs_t struct {
	Version   int32
	Type      int32
	Bsize     uint64
	Blocks    uint64
	Bfree     uint64
	Bavail    uint64
	Files     uint64
	Ffree     uint64
	Fsid      Fsid64_t
	Vfstype   int32

type Timeval32 C.struct_timeval32

// Processes

type Rusage C.struct_rusage

type Rlimit C.struct_rlimit

type _Gid_t C.gid_t

// Files

type Stat_t C.struct_stat64

type Statfs_t C.struct_statfs64

type Flock_t C.struct_flock

type Fstore_t C.struct_fstore

type Radvisory_t C.struct_radvisory

type Fbootstraptransfer_t C.struct_fbootstraptransfer

//sys	Fchown(fd int, uid int, gid int) (err error)
//sys	Fstat(fd int, stat *Stat_t) (err error)
//sys	fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_NEWFSTATAT
//sys	Fstatfs(fd int, buf *Statfs_t) (err error)
//sys	Ftruncate(fd int, length int64) (err error)
//sysnb	Getegid() (egid int)
//sysnb	Geteuid() (euid int)
//sysnb	Getgid() (gid int)
//sysnb	Getrlimit(resource int, rlim *Rlimit) (err error) = SYS_GETRLIMIT