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 // +build aix

     6 // +build ppc

     7 

     8 // Functions to access/create device major and minor numbers matching the

     9 // encoding used by AIX.

    10 

    11 package unix

    12 

    13 // Major returns the major component of a Linux device number.

    14 func Major(dev uint64) uint32 {

    15 	return uint32((dev >> 16) & 0xffff)

    16 }

    17 

    18 // Minor returns the minor component of a Linux device number.

    19 func Minor(dev uint64) uint32 {

    20 	return uint32(dev & 0xffff)

    21 }

    22 

    23 // Mkdev returns a Linux device number generated from the given major and minor

    24 // components.

    25 func Mkdev(major, minor uint32) uint64 {

    26 	return uint64(((major) << 16) | (minor))

    27 }