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 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 >> 16) & 0xffff) 15 } 16 17 // Minor returns the minor component of a Linux device number. 18 func 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. 24 func Mkdev(major, minor uint32) uint64 { 25 return uint64(((major) << 16) | (minor)) 26 } 27