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Diffstat (limited to '')
-rw-r--r-- | dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/dev_openbsd.go | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/dev_openbsd.go b/dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/dev_openbsd.go new file mode 100644 index 0000000..f3430c4 --- /dev/null +++ b/dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/dev_openbsd.go @@ -0,0 +1,29 @@ +// 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 OpenBSD's sys/types.h header. + +package unix + +// Major returns the major component of an OpenBSD device number. +func Major(dev uint64) uint32 { + return uint32((dev & 0x0000ff00) >> 8) +} + +// Minor returns the minor component of an OpenBSD device number. +func Minor(dev uint64) uint32 { + minor := uint32((dev & 0x000000ff) >> 0) + minor |= uint32((dev & 0xffff0000) >> 8) + return minor +} + +// Mkdev returns an OpenBSD device number generated from the given major and minor +// components. +func Mkdev(major, minor uint32) uint64 { + dev := (uint64(major) << 8) & 0x0000ff00 + dev |= (uint64(minor) << 8) & 0xffff0000 + dev |= (uint64(minor) << 0) & 0x000000ff + return dev +} |