_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)

	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)

//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

	Sysid  uint32
	Pid    int32
	Vfs    int32
	Start  int64
	Len    int64
}

type Fsid_t struct {
	Val [2]uint32
}
type Fsid64_t struct {
	Val [2]uint64
}

type Statfs_t struct {
	Version   int32
	Type      int32
	Bsize     uint32
	Blocks    uint32
	Bfree     uint32
	Bavail    uint32
	Files     uint32
	Ffree     uint32
	Fsid      Fsid_t
	Vfstype   int32

	"golang.org/x/sys/unix"
)

// GetInfo returns total and free bytes available in a directory, e.g. `/`.
func GetInfo(path string, firstTime 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),

	Sysid  uint32
	Pid    int32
	Vfs    int32
	Start  int64
	Len    int64
}

type Fsid_t struct {
	Val [2]uint32
}
type Fsid64_t struct {
	Val [2]uint64
}

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

	Mtim           Timespec
	Ctim           Timespec
	Size           int64
	Blocks         int64
	Blksize        int32
	Flags          uint32
	Gen            uint32
	X__st_birthtim Timespec
}

type Statfs_t struct {
	F_flags       uint32
	F_bsize       uint32
	F_iosize      uint32
	F_blocks      uint64
	F_bfree       uint64
	F_bavail      int64
	F_files       uint64
	F_ffree       uint64

	S_IXUSR  = C.S_IXUSR
	S_IRWXG  = C.S_IRWXG
	S_IRWXO  = C.S_IRWXO
)

const (
	_statfsVersion = C.STATFS_VERSION
	_dirblksiz     = C.DIRBLKSIZ
)

type Stat_t C.struct_stat

type Statfs_t C.struct_statfs

type Flock_t C.struct_flock

type Dirent C.struct_dirent

type Fsid C.struct_fsid

// File system limits

const (
	pathMax = C.PATH_MAX
)

// Sockets

	Mtim           Timespec
	Ctim           Timespec
	Size           int64
	Blocks         int64
	Blksize        int32
	Flags          uint32
	Gen            uint32
	X__st_birthtim Timespec
}

type Statfs_t struct {
	F_flags       uint32
	F_bsize       uint32
	F_iosize      uint32
	F_blocks      uint64
	F_bfree       uint64
	F_bavail      int64
	F_files       uint64
	F_ffree       uint64