b663783717
For 3rd parties building binary packages, and for build consistency in general, it is very helpful to have the same set of dependencies at any time the product is built. See [tools/godep](https://github.com/tools/godep) for further details.
30 lines
913 B
Go
30 lines
913 B
Go
// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Functions to access/create device major and minor numbers matching the
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// encoding used in NetBSD's sys/types.h header.
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package unix
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// Major returns the major component of a NetBSD device number.
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func Major(dev uint64) uint32 {
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return uint32((dev & 0x000fff00) >> 8)
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}
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// Minor returns the minor component of a NetBSD device number.
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func Minor(dev uint64) uint32 {
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minor := uint32((dev & 0x000000ff) >> 0)
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minor |= uint32((dev & 0xfff00000) >> 12)
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return minor
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}
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// Mkdev returns a NetBSD device number generated from the given major and minor
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// components.
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func Mkdev(major, minor uint32) uint64 {
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dev := (uint64(major) << 8) & 0x000fff00
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dev |= (uint64(minor) << 12) & 0xfff00000
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dev |= (uint64(minor) << 0) & 0x000000ff
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return dev
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}
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