text: // Copyright 2017 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  
  // Functions to access/create device major and minor numbers matching the
  // encoding used in NetBSD's sys/types.h header.
  
  package unix
  
  // Major returns the major component of a NetBSD device number.
  func Major(dev uint64) uint32 {
  	return uint32((dev & 0x000fff00) >> 8)
  }
  
  // Minor returns the minor component of a NetBSD device number.
  func Minor(dev uint64) uint32 {
  	minor := uint32((dev & 0x000000ff) >> 0)
  	minor |= uint32((dev & 0xfff00000) >> 12)
  	return minor
  }
  
  // Mkdev returns a NetBSD device number generated from the given major and minor
  // components.
  func Mkdev(major, minor uint32) uint64 {
  	dev := (uint64(major) << 8) & 0x000fff00
  	dev |= (uint64(minor) << 12) & 0xfff00000
  	dev |= (uint64(minor) << 0) & 0x000000ff
  	return dev
  }
  