internal MacSerialStream(MacSerialDevice device)
: base(device)
{
string fileSystemName = device.GetFileSystemName();
int ret;
int handle = NativeMethods.retry(() => NativeMethods.open(fileSystemName, NativeMethods.oflag.RDWR | NativeMethods.oflag.NOCTTY | NativeMethods.oflag.NONBLOCK));
if (handle < 0)
{
var error = (NativeMethods.error)Marshal.GetLastWin32Error();
if (error == NativeMethods.error.EACCES)
{
throw DeviceException.CreateUnauthorizedAccessException(device, "Not permitted to open serial device at " + fileSystemName + ".");
}
else
{
throw DeviceException.CreateIOException(device, "Unable to open serial device (" + error.ToString() + ").");
}
}
ret = NativeMethods.retry(() => NativeMethods.ioctl(handle, NativeMethods.TIOCEXCL));
if (ret < 0)
{
NativeMethods.retry(() => NativeMethods.close(handle));
throw new IOException("Unable to open serial device exclusively.");
}
/*
* ret = NativeMethods.retry(() => NativeMethods.fcntl(handle, NativeMethods.F_SETFL, 0));
* if (ret < 0)
* {
* NativeMethods.retry(() => NativeMethods.ioctl(handle, NativeMethods.TIOCNXCL));
* NativeMethods.retry(() => NativeMethods.close(handle));
* throw new IOException("Unable to remove blocking from port.");
* }
*/
ret = NativeMethods.retry(() => NativeMethods.tcgetattr(handle, out _oldSettings));
if (ret < 0)
{
NativeMethods.retry(() => NativeMethods.ioctl(handle, NativeMethods.TIOCNXCL));
NativeMethods.retry(() => NativeMethods.close(handle));
throw new IOException("Unable to get serial port settings.");
}
_newSettings = _oldSettings;
NativeMethods.cfmakeraw(ref _newSettings);
_handle = handle;
InitSettings();
UpdateSettings();
}
internal static int DeviceHandleFromPath(string path, HidDevice hidDevice, NativeMethods.oflag oflag)
{
IntPtr udev = NativeMethodsLibudev.Instance.udev_new();
if (IntPtr.Zero != udev)
{
try
{
IntPtr device = NativeMethodsLibudev.Instance.udev_device_new_from_syspath(udev, path);
if (IntPtr.Zero != device)
{
try
{
string devnode = NativeMethodsLibudev.Instance.udev_device_get_devnode(device);
if (devnode != null)
{
int handle = NativeMethods.retry(() => NativeMethods.open(devnode, oflag));
if (handle < 0)
{
var error = (NativeMethods.error)Marshal.GetLastWin32Error();
if (error == NativeMethods.error.EACCES)
{
throw DeviceException.CreateUnauthorizedAccessException(hidDevice, "Not permitted to open HID class device at " + devnode + ".");
}
else
{
throw DeviceException.CreateIOException(hidDevice, "Unable to open HID class device (" + error.ToString() + ").");
}
}
return(handle);
}
}
finally
{
NativeMethodsLibudev.Instance.udev_device_unref(device);
}
}
}
finally
{
NativeMethodsLibudev.Instance.udev_unref(udev);
}
}
throw new FileNotFoundException("HID class device not found.");
}