]> git.immae.eu Git - github/fretlink/terraform-provider-statuscake.git/blob - vendor/golang.org/x/sys/unix/dev_openbsd.go
Merge branch 'fix_read_test' of github.com:alexandreFre/terraform-provider-statuscake
[github/fretlink/terraform-provider-statuscake.git] / vendor / golang.org / x / sys / unix / dev_openbsd.go
1 // Copyright 2017 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 // Functions to access/create device major and minor numbers matching the
6 // encoding used in OpenBSD's sys/types.h header.
7
8 package unix
9
10 // Major returns the major component of an OpenBSD device number.
11 func Major(dev uint64) uint32 {
12 return uint32((dev & 0x0000ff00) >> 8)
13 }
14
15 // Minor returns the minor component of an OpenBSD device number.
16 func Minor(dev uint64) uint32 {
17 minor := uint32((dev & 0x000000ff) >> 0)
18 minor |= uint32((dev & 0xffff0000) >> 8)
19 return minor
20 }
21
22 // Mkdev returns an OpenBSD device number generated from the given major and minor
23 // components.
24 func Mkdev(major, minor uint32) uint64 {
25 dev := (uint64(major) << 8) & 0x0000ff00
26 dev |= (uint64(minor) << 8) & 0xffff0000
27 dev |= (uint64(minor) << 0) & 0x000000ff
28 return dev
29 }