aboutsummaryrefslogtreecommitdiff
path: root/vendor/golang.org/x/sys/unix/dev_netbsd.go
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/golang.org/x/sys/unix/dev_netbsd.go')
-rw-r--r--vendor/golang.org/x/sys/unix/dev_netbsd.go29
1 files changed, 29 insertions, 0 deletions
diff --git a/vendor/golang.org/x/sys/unix/dev_netbsd.go b/vendor/golang.org/x/sys/unix/dev_netbsd.go
new file mode 100644
index 0000000..b4a203d
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/dev_netbsd.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 NetBSD's sys/types.h header.
+
+package unix
+
+// Major returns the major component of a NetBSD device number.
+func Major(dev uint64) uint32 {
+ return uint32((dev & 0x000fff00) >> 8)
+}
+
+// Minor returns the minor component of a NetBSD device number.
+func Minor(dev uint64) uint32 {
+ minor := uint32((dev & 0x000000ff) >> 0)
+ minor |= uint32((dev & 0xfff00000) >> 12)
+ return minor
+}
+
+// Mkdev returns a NetBSD device number generated from the given major and minor
+// components.
+func Mkdev(major, minor uint32) uint64 {
+ dev := (uint64(major) << 8) & 0x000fff00
+ dev |= (uint64(minor) << 12) & 0xfff00000
+ dev |= (uint64(minor) << 0) & 0x000000ff
+ return dev
+}