diff options
Diffstat (limited to 'vendor/golang.org/x/sys/unix/dev_darwin.go')
| -rw-r--r-- | vendor/golang.org/x/sys/unix/dev_darwin.go | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/vendor/golang.org/x/sys/unix/dev_darwin.go b/vendor/golang.org/x/sys/unix/dev_darwin.go new file mode 100644 index 0000000..8d1dc0f --- /dev/null +++ b/vendor/golang.org/x/sys/unix/dev_darwin.go | |||
| @@ -0,0 +1,24 @@ | |||
| 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 | } | ||
