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| author | Stefan Majewsky <majewsky@gmx.net> | 2019-10-29 16:51:07 +0100 |
|---|---|---|
| committer | Stefan Majewsky <majewsky@gmx.net> | 2019-10-29 16:51:07 +0100 |
| commit | afe18e86a7aa2248c69997ed941bcbe3e6b2a655 (patch) | |
| tree | 7aaef5752ba8ad3465e9638c7adca71e1a103ee3 /vendor/golang.org/x/sys/unix/dev_dragonfly.go | |
| parent | ef84ca3e82f422118c69a0c562433c185e1dcb9b (diff) | |
| download | gofu-afe18e86a7aa2248c69997ed941bcbe3e6b2a655.tar.gz | |
switch to go.mod
Diffstat (limited to 'vendor/golang.org/x/sys/unix/dev_dragonfly.go')
| -rw-r--r-- | vendor/golang.org/x/sys/unix/dev_dragonfly.go | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/vendor/golang.org/x/sys/unix/dev_dragonfly.go b/vendor/golang.org/x/sys/unix/dev_dragonfly.go new file mode 100644 index 0000000..8502f20 --- /dev/null +++ b/vendor/golang.org/x/sys/unix/dev_dragonfly.go @@ -0,0 +1,30 @@ +// 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 Dragonfly's sys/types.h header. +// +// The information below is extracted and adapted from sys/types.h: +// +// Minor gives a cookie instead of an index since in order to avoid changing the +// meanings of bits 0-15 or wasting time and space shifting bits 16-31 for +// devices that don't use them. + +package unix + +// Major returns the major component of a DragonFlyBSD device number. +func Major(dev uint64) uint32 { + return uint32((dev >> 8) & 0xff) +} + +// Minor returns the minor component of a DragonFlyBSD device number. +func Minor(dev uint64) uint32 { + return uint32(dev & 0xffff00ff) +} + +// Mkdev returns a DragonFlyBSD device number generated from the given major and +// minor components. +func Mkdev(major, minor uint32) uint64 { + return (uint64(major) << 8) | uint64(minor) +} |
