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comparison vendor/golang.org/x/sys/unix/dev_zos.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 2020 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 zos && s390x
6 // +build zos,s390x
7
8 // Functions to access/create device major and minor numbers matching the
9 // encoding used by z/OS.
10 //
11 // The information below is extracted and adapted from <sys/stat.h> macros.
12
13 package unix
14
15 // Major returns the major component of a z/OS device number.
16 func Major(dev uint64) uint32 {
17 return uint32((dev >> 16) & 0x0000FFFF)
18 }
19
20 // Minor returns the minor component of a z/OS device number.
21 func Minor(dev uint64) uint32 {
22 return uint32(dev & 0x0000FFFF)
23 }
24
25 // Mkdev returns a z/OS device number generated from the given major and minor
26 // components.
27 func Mkdev(major, minor uint32) uint64 {
28 return (uint64(major) << 16) | uint64(minor)
29 }