my $funcname = "";
	if($sysname eq "") {
		$sysname = "SYS_$func";
		$sysname =~ s/([a-z])([A-Z])/${1}_$2/g;	# turn FooBar into Foo_Bar
		$sysname =~ y/a-z/A-Z/;
		if($libc) {
			$sysname =~ y/A-Z/a-z/;
			$sysname = substr $sysname, 4;
			$funcname = "libc_$sysname";
		}
	}
	if($libc) {
		if($funcname eq "") {
			$sysname = substr $sysname, 4;
			$sysname =~ y/A-Z/a-z/;

	if err != nil {
		// Utsname members on Dragonfly are only 32 bytes and
		// the syscall returns ENOMEM in case the actual value
		// is longer.
		if err == ENOMEM {
			err = nil
		}
	}
	return err
}

func Uname(uname *Utsname) error {
	mib := []_C_int{CTL_KERN, KERN_OSTYPE}
	n := unsafe.Sizeof(uname.Sysname)
	if err := sysctlUname(mib, &uname.Sysname[0], &n); err != nil {
		return err
	}

	var value Ptmget
	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
	return &value, err
}

func Uname(uname *Utsname) error {
	mib := []_C_int{CTL_KERN, KERN_OSTYPE}
	n := unsafe.Sizeof(uname.Sysname)
	if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
		return err
	}

	mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
	n = unsafe.Sizeof(uname.Nodename)

	Totalswap uint64
	Freeswap  uint64
	Procs     uint16
	Pad       uint16
	Totalhigh uint64
	Freehigh  uint64
	Unit      uint32
	X_f       [0]int8
	Pad_cgo_0 [4]byte
}

type Utsname struct {
	Sysname    [65]int8
	Nodename   [65]int8
	Release    [65]int8
	Version    [65]int8
	Machine    [65]int8
	Domainname [65]int8
}

type Ustat_t struct {
	Tfree     int32
	Tinode    uint64

	Freeswap  uint64
	Procs     uint16
	Pad       uint16
	Pad_cgo_0 [4]byte
	Totalhigh uint64
	Freehigh  uint64
	Unit      uint32
	X_f       [0]int8
	Pad_cgo_1 [4]byte
}

type Utsname struct {
	Sysname    [65]int8
	Nodename   [65]int8
	Release    [65]int8
	Version    [65]int8
	Machine    [65]int8
	Domainname [65]int8
}

type Ustat_t struct {
	Tfree     int32
	Pad_cgo_0 [4]byte

	Freeswap  uint64
	Procs     uint16
	Pad       uint16
	Pad_cgo_0 [4]byte
	Totalhigh uint64
	Freehigh  uint64
	Unit      uint32
	X_f       [0]uint8
	Pad_cgo_1 [4]byte
}

type Utsname struct {
	Sysname    [65]uint8
	Nodename   [65]uint8
	Release    [65]uint8
	Version    [65]uint8
	Machine    [65]uint8
	Domainname [65]uint8
}

type Ustat_t struct {
	Tfree     int32
	Pad_cgo_0 [4]byte

	if len(fds) == 0 {
		return ppoll(nil, 0, timeout, sigmask)
	}
	return ppoll(&fds[0], len(fds), timeout, sigmask)
}

func Uname(uname *Utsname) error {
	mib := []_C_int{CTL_KERN, KERN_OSTYPE}
	n := unsafe.Sizeof(uname.Sysname)
	if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
		return err
	}

	mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
	n = unsafe.Sizeof(uname.Nodename)

	Freeswap  uint64
	Procs     uint16
	Pad       uint16
	Pad_cgo_0 [4]byte
	Totalhigh uint64
	Freehigh  uint64
	Unit      uint32
	X_f       [0]int8
	Pad_cgo_1 [4]byte
}

type Utsname struct {
	Sysname    [65]int8
	Nodename   [65]int8
	Release    [65]int8
	Version    [65]int8
	Machine    [65]int8
	Domainname [65]int8
}

type Ustat_t struct {
	Tfree     int32
	Pad_cgo_0 [4]byte

	POLLHUP    = 0x10
	POLLIN     = 0x1
	POLLNVAL   = 0x20
	POLLOUT    = 0x4
	POLLPRI    = 0x2
	POLLRDBAND = 0x80
	POLLRDNORM = 0x40
	POLLWRBAND = 0x100
	POLLWRNORM = 0x4
)

type Utsname struct {
	Sysname  [256]byte
	Nodename [256]byte
	Release  [256]byte
	Version  [256]byte
	Machine  [256]byte
}

const SizeofClockinfo = 0x14

type Clockinfo struct {
	Hz      int32
	Tick    int32

	Bufferram uint32
	Totalswap uint32
	Freeswap  uint32
	Procs     uint16
	Pad       uint16
	Totalhigh uint32
	Freehigh  uint32
	Unit      uint32
	X_f       [8]uint8
}

type Utsname struct {
	Sysname    [65]uint8
	Nodename   [65]uint8
	Release    [65]uint8
	Version    [65]uint8
	Machine    [65]uint8
	Domainname [65]uint8
}

type Ustat_t struct {
	Tfree  int32
	Tinode uint32