github.com/damirazo/docker@v1.9.0/pkg/parsers/operatingsystem/operatingsystem_windows.go (about)

     1  package operatingsystem
     2  
     3  import (
     4  	"syscall"
     5  	"unsafe"
     6  )
     7  
     8  // See https://code.google.com/p/go/source/browse/src/pkg/mime/type_windows.go?r=d14520ac25bf6940785aabb71f5be453a286f58c
     9  // for a similar sample
    10  
    11  // GetOperatingSystem gets the name of the current operating system.
    12  func GetOperatingSystem() (string, error) {
    13  
    14  	var h syscall.Handle
    15  
    16  	// Default return value
    17  	ret := "Unknown Operating System"
    18  
    19  	if err := syscall.RegOpenKeyEx(syscall.HKEY_LOCAL_MACHINE,
    20  		syscall.StringToUTF16Ptr(`SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\`),
    21  		0,
    22  		syscall.KEY_READ,
    23  		&h); err != nil {
    24  		return ret, err
    25  	}
    26  	defer syscall.RegCloseKey(h)
    27  
    28  	var buf [1 << 10]uint16
    29  	var typ uint32
    30  	n := uint32(len(buf) * 2) // api expects array of bytes, not uint16
    31  
    32  	if err := syscall.RegQueryValueEx(h,
    33  		syscall.StringToUTF16Ptr("ProductName"),
    34  		nil,
    35  		&typ,
    36  		(*byte)(unsafe.Pointer(&buf[0])),
    37  		&n); err != nil {
    38  		return ret, err
    39  	}
    40  	ret = syscall.UTF16ToString(buf[:])
    41  
    42  	return ret, nil
    43  }
    44  
    45  // IsContainerized returns true if we are running inside a container.
    46  // No-op on Windows, always returns false.
    47  func IsContainerized() (bool, error) {
    48  	return false, nil
    49  }