dev_aix_ppc64.go raw

   1  // Copyright 2018 The Go Authors. All rights reserved.
   2  // Use of this source code is governed by a BSD-style
   3  // license that can be found in the LICENSE file.
   4  
   5  //go:build aix && ppc64
   6  
   7  // Functions to access/create device major and minor numbers matching the
   8  // encoding used AIX.
   9  
  10  package unix
  11  
  12  // Major returns the major component of a Linux device number.
  13  func Major(dev uint64) uint32 {
  14  	return uint32((dev & 0x3fffffff00000000) >> 32)
  15  }
  16  
  17  // Minor returns the minor component of a Linux device number.
  18  func Minor(dev uint64) uint32 {
  19  	return uint32((dev & 0x00000000ffffffff) >> 0)
  20  }
  21  
  22  // Mkdev returns a Linux device number generated from the given major and minor
  23  // components.
  24  func Mkdev(major, minor uint32) uint64 {
  25  	var DEVNO64 uint64
  26  	DEVNO64 = 0x8000000000000000
  27  	return ((uint64(major) << 32) | (uint64(minor) & 0x00000000FFFFFFFF) | DEVNO64)
  28  }
  29