rss-tools: vendor/golang.org/x/sys/unix/dev_darwin.go (58cc1bd492af31e6c9acf65e690474c8c1edf164)

rss-tools/vendor/golang.org/x/sys/unix/dev_darwin.go (view raw)

Oleksandr Smirnov we're vendoring now, 7 days ago

// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Functions to access/create device major and minor numbers matching the
// encoding used in Darwin's sys/types.h header.

package unix

// Major returns the major component of a Darwin device number.
func Major(dev uint64) uint32 {
	return uint32((dev >> 24) & 0xff)
}

// Minor returns the minor component of a Darwin device number.
func Minor(dev uint64) uint32 {
	return uint32(dev & 0xffffff)
}

// Mkdev returns a Darwin device number generated from the given major and minor
// components.
func Mkdev(major, minor uint32) uint64 {
	return (uint64(major) << 24) | uint64(minor)
}

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 Darwin's sys/types.h header.
7
8	package unix
9
10	// Major returns the major component of a Darwin device number.
11	func Major(dev uint64) uint32 {
12	return uint32((dev >> 24) & 0xff)
13	}
14
15	// Minor returns the minor component of a Darwin device number.
16	func Minor(dev uint64) uint32 {
17	return uint32(dev & 0xffffff)
18	}
19
20	// Mkdev returns a Darwin device number generated from the given major and minor
21	// components.
22	func Mkdev(major, minor uint32) uint64 {
23	return (uint64(major) << 24) \| uint64(minor)
24	}