Tobias Klauser 033028a6b4 unix: add Major, Minor and Mkdev functions on OpenBSD ...

Add Major, Minor and Mkdev functions for converting devices numbers to
their major/minor components and vice versa.

The functions follow the behavior of the macros defined in OpenBSD's
sys/types.h header. However, the parameter and return types are changed
to match the existing implementations of these functions.

Test the conversion macros with some well-known device numbers.

Updates golang/go#8106

Change-Id: Ia50b7ccab18ff7c7e9dd77ddc7e4aa6cf5c79963
Reviewed-on: https://go-review.googlesource.com/63070
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

2017-09-12 22:26:33 +00:00

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