/// <summary>
/// Checks if the environment you are running in now supports WSL.
/// </summary>
public static void AssertWslSupported()
{
var commonErrorMessage = "Windows Subsystems for Linux requires 64-bit system and latest version of Windows 10 or higher than Windows Server 1709.";
var is64BitProcess = (IntPtr.Size == 8);
var is64BitOperatingSystem = is64BitProcess || InternalCheckIsWow64();
if (!is64BitOperatingSystem || !is64BitProcess)
{
throw new PlatformNotSupportedException(commonErrorMessage);
}
var osvi = new NativeMethods.OSVERSIONINFOEXW();
osvi.dwOSVersionInfoSize = (uint)Marshal.SizeOf(osvi);
if (!NativeMethods.GetVersionExW(ref osvi))
{
throw new PlatformNotSupportedException(commonErrorMessage);
}
if (osvi.dwPlatformId != 2)
{
throw new PlatformNotSupportedException(commonErrorMessage);
}
if (osvi.dwMajorVersion < 10 ||
osvi.dwMinorVersion < 0 ||
osvi.dwBuildNumber < 16299)
{
throw new PlatformNotSupportedException(commonErrorMessage);
}
var systemDirectory = Path.Combine(
Environment.GetEnvironmentVariable("WINDIR"),
"system32");
if (!File.Exists(Path.Combine(systemDirectory, "wslapi.dll")))
{
throw new NotSupportedException("This system does not have WSL enabled.");
}
if (!File.Exists(Path.Combine(systemDirectory, "wsl.exe")))
{
throw new NotSupportedException("This system does not have wsl.exe CLI.");
}
}
/// <summary>
/// Checks if a 64-bit process is running on a 64-bit system.
/// </summary>
/// <returns>Returns True or False depending on whether or not.</returns>
private static bool InternalCheckIsWow64()
{
var osvi = new NativeMethods.OSVERSIONINFOEXW();
osvi.dwOSVersionInfoSize = (uint)Marshal.SizeOf(osvi);
if (NativeMethods.GetVersionExW(ref osvi))
{
if ((osvi.dwMajorVersion == 5 && osvi.dwMinorVersion >= 1) ||
osvi.dwMajorVersion >= 6)
{
if (NativeMethods.IsWow64Process(NativeMethods.GetCurrentProcess(), out bool retVal))
{
return(retVal);
}
}
}
return(false);
}
