Example #1
0
func newSocket(fd, n int, chk bool) (*device, error) {
	i := hciDevInfo{id: uint16(n)}
	if err := gioctl.Ioctl(uintptr(fd), hciGetDeviceInfo, uintptr(unsafe.Pointer(&i))); err != nil {
		return nil, err
	}
	name := string(i.name[:])
	// Check the feature list returned feature list.
	if chk && i.features[4]&0x40 == 0 {
		err := errors.New("does not support LE")
		log.Printf("dev: %s %s", name, err)
		return nil, err
	}
	log.Printf("dev: %s up", name)
	if err := gioctl.Ioctl(uintptr(fd), hciUpDevice, uintptr(n)); err != nil {
		if err != syscall.EALREADY {
			return nil, err
		}
		log.Printf("dev: %s reset", name)
		if err := gioctl.Ioctl(uintptr(fd), hciResetDevice, uintptr(n)); err != nil {
			return nil, err
		}
	}
	log.Printf("dev: %s down", name)
	if err := gioctl.Ioctl(uintptr(fd), hciDownDevice, uintptr(n)); err != nil {
		return nil, err
	}

	// Attempt to use the linux 3.14 feature, if this fails with EINVAL fall back to raw access
	// on older kernels.
	sa := socket.SockaddrHCI{Dev: n, Channel: socket.HCI_CHANNEL_USER}
	if err := socket.Bind(fd, &sa); err != nil {
		if err != syscall.EINVAL {
			return nil, err
		}
		log.Printf("dev: %s can't bind to hci user channel, err: %s.", name, err)
		sa := socket.SockaddrHCI{Dev: n, Channel: socket.HCI_CHANNEL_RAW}
		if err := socket.Bind(fd, &sa); err != nil {
			log.Printf("dev: %s can't bind to hci raw channel, err: %s.", name, err)
			return nil, err
		}
	}
	return &device{
		fd:   fd,
		dev:  n,
		name: name,
		rmu:  &sync.Mutex{},
		wmu:  &sync.Mutex{},
	}, nil
}
Example #2
0
func afs_syscall(call uintptr, param1 uintptr, param2 uintptr, param3 uintptr, param4 uintptr) error {
	fd, err := syscall.Open("/proc/fs/openafs/afs_ioctl", syscall.O_RDWR, 0)

	if err != nil {
		fd, err = syscall.Open("/proc/fs/nnpfs/afs_ioctl", syscall.O_RDWR, 0)
	}

	if err != nil {
		return err
	}

	data := afsprocdata{
		param4,
		param3,
		param2,
		param1,
		call,
	}

	err = gioctl.Ioctl(uintptr(fd), gioctl.IoW(67, 1, unsafe.Sizeof(uintptr(0))), uintptr(unsafe.Pointer(&data)))

	syscall.Close(fd)

	return err
}
Example #3
0
func afs_syscall(call uintptr, param1 uintptr, param2 uintptr, param3 uintptr, param4 uintptr) error {
	fd, err := syscall.Open("/dev/openafs_ioctl", syscall.O_RDWR, 0)

	if err != nil {
		return err
	}

	if intSize == 32 {
		data := afsprocdata32{
			call,
			param1,
			param2,
			param3,
			param4,
			0,
			0,
			0,
		}

		err = gioctl.Ioctl(uintptr(fd), gioctl.IoW(67, 1, unsafe.Sizeof(uintptr(0))), uintptr(unsafe.Pointer(&data)))
	} else {
		data := afsprocdata64{
			param1,
			param2,
			param3,
			param4,
			0,
			0,
			int32(call),
			0,
		}

		err = gioctl.Ioctl(uintptr(fd), gioctl.IoW(67, 2, unsafe.Sizeof(uintptr(0))), uintptr(unsafe.Pointer(&data)))
	}

	syscall.Close(fd)

	return err
}
Example #4
0
func newDevice(n int, chk bool) (*device, error) {
	fd, err := socket.Socket(socket.AF_BLUETOOTH, syscall.SOCK_RAW, socket.BTPROTO_HCI)
	if err != nil {
		return nil, err
	}
	if n != -1 {
		return newSocket(fd, n, chk)
	}

	req := devListRequest{devNum: hciMaxDevices}
	if err := gioctl.Ioctl(uintptr(fd), hciGetDeviceList, uintptr(unsafe.Pointer(&req))); err != nil {
		return nil, err
	}
	for i := 0; i < int(req.devNum); i++ {
		d, err := newSocket(fd, i, chk)
		if err == nil {
			log.Printf("dev: %s opened", d.name)
			return d, err
		}
	}
	return nil, errors.New("no supported devices available")
}