package system import ( "syscall" "unsafe" "github.com/Sirupsen/logrus" ) var ( ntuserApiset = syscall.NewLazyDLL("ext-ms-win-ntuser-window-l1-1-0") procGetVersionExW = modkernel32.NewProc("GetVersionExW") ) // OSVersion is a wrapper for Windows version information // https://msdn.microsoft.com/en-us/library/windows/desktop/ms724439(v=vs.85).aspx type OSVersion struct { Version uint32 MajorVersion uint8 MinorVersion uint8 Build uint16 } // https://msdn.microsoft.com/en-us/library/windows/desktop/ms724833(v=vs.85).aspx type osVersionInfoEx struct { OSVersionInfoSize uint32 MajorVersion uint32 MinorVersion uint32 BuildNumber uint32 PlatformID uint32 CSDVersion [128]uint16 ServicePackMajor uint16 ServicePackMinor uint16 SuiteMask uint16 ProductType byte Reserve byte } // GetOSVersion gets the operating system version on Windows. Note that // docker.exe must be manifested to get the correct version information. func GetOSVersion() OSVersion { var err error osv := OSVersion{} osv.Version, err = syscall.GetVersion() if err != nil { // GetVersion never fails. panic(err) } osv.MajorVersion = uint8(osv.Version & 0xFF) osv.MinorVersion = uint8(osv.Version >> 8 & 0xFF) osv.Build = uint16(osv.Version >> 16) return osv } // IsWindowsClient returns true if the SKU is client // @engine maintainers - this function should not be removed or modified as it // is used to enforce licensing restrictions on Windows. func IsWindowsClient() bool { osviex := &osVersionInfoEx{OSVersionInfoSize: 284} r1, _, err := procGetVersionExW.Call(uintptr(unsafe.Pointer(osviex))) if r1 == 0 { logrus.Warnf("GetVersionExW failed - assuming server SKU: %v", err) return false } const verNTWorkstation = 0x00000001 return osviex.ProductType == verNTWorkstation } // Unmount is a platform-specific helper function to call // the unmount syscall. Not supported on Windows func Unmount(dest string) error { return nil } // CommandLineToArgv wraps the Windows syscall to turn a commandline into an argument array. func CommandLineToArgv(commandLine string) ([]string, error) { var argc int32 argsPtr, err := syscall.UTF16PtrFromString(commandLine) if err != nil { return nil, err } argv, err := syscall.CommandLineToArgv(argsPtr, &argc) if err != nil { return nil, err } defer syscall.LocalFree(syscall.Handle(uintptr(unsafe.Pointer(argv)))) newArgs := make([]string, argc) for i, v := range (*argv)[:argc] { newArgs[i] = string(syscall.UTF16ToString((*v)[:])) } return newArgs, nil } // HasWin32KSupport determines whether containers that depend on win32k can // run on this machine. Win32k is the driver used to implement windowing. func HasWin32KSupport() bool { // For now, check for ntuser API support on the host. In the future, a host // may support win32k in containers even if the host does not support ntuser // APIs. return ntuserApiset.Load() == nil }