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comparison vendor/golang.org/x/sys/unix/dev_dragonfly.go @ 66:787b5ee0289d draft

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Use vendored modules Signed-off-by: Izuru Yakumo <yakumo.izuru@chaotic.ninja>
author yakumo.izuru
date Sun, 23 Jul 2023 13:18:53 +0000
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65:6d985efa0f7a 66:787b5ee0289d
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 Dragonfly's sys/types.h header.
7 //
8 // The information below is extracted and adapted from sys/types.h:
9 //
10 // Minor gives a cookie instead of an index since in order to avoid changing the
11 // meanings of bits 0-15 or wasting time and space shifting bits 16-31 for
12 // devices that don't use them.
13
14 package unix
15
16 // Major returns the major component of a DragonFlyBSD device number.
17 func Major(dev uint64) uint32 {
18 return uint32((dev >> 8) & 0xff)
19 }
20
21 // Minor returns the minor component of a DragonFlyBSD device number.
22 func Minor(dev uint64) uint32 {
23 return uint32(dev & 0xffff00ff)
24 }
25
26 // Mkdev returns a DragonFlyBSD device number generated from the given major and
27 // minor components.
28 func Mkdev(major, minor uint32) uint64 {
29 return (uint64(major) << 8) | uint64(minor)
30 }