src

Go monorepo.
git clone git://code.dwrz.net/src
Log | Files | Refs

dev_aix_ppc64.go (858B)

      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 }