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authorAlex Pilon <apilon@hashicorp.com>2019-02-22 18:24:37 -0500
committerAlex Pilon <apilon@hashicorp.com>2019-02-22 18:24:37 -0500
commit15c0b25d011f37e7c20aeca9eaf461f78285b8d9 (patch)
tree255c250a5c9d4801c74092d33b7337d8c14438ff /vendor/golang.org/x/sys/unix/dev_dragonfly.go
parent07971ca38143c5faf951d152fba370ddcbe26ad5 (diff)
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deps: github.com/hashicorp/terraform@sdk-v0.11-with-go-modules
Updated via: go get github.com/hashicorp/terraform@sdk-v0.11-with-go-modules and go mod tidy
Diffstat (limited to 'vendor/golang.org/x/sys/unix/dev_dragonfly.go')
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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
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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
14package unix
15
16// Major returns the major component of a DragonFlyBSD device number.
17func Major(dev uint64) uint32 {
18 return uint32((dev >> 8) & 0xff)
19}
20
21// Minor returns the minor component of a DragonFlyBSD device number.
22func 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.
28func Mkdev(major, minor uint32) uint64 {
29 return (uint64(major) << 8) | uint64(minor)
30}