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 && ppc
 6
 7// Functions to access/create device major and minor numbers matching the
 8// encoding used by AIX.
 9
10package unix
11
12// Major returns the major component of a Linux device number.
13func Major(dev uint64) uint32 {
14	return uint32((dev >> 16) & 0xffff)
15}
16
17// Minor returns the minor component of a Linux device number.
18func Minor(dev uint64) uint32 {
19	return uint32(dev & 0xffff)
20}
21
22// Mkdev returns a Linux device number generated from the given major and minor
23// components.
24func Mkdev(major, minor uint32) uint64 {
25	return uint64(((major) << 16) | (minor))
26}