summaryrefslogtreecommitdiff
path: root/vendor/golang.org/x/sys/unix/dev_dragonfly.go
diff options
context:
space:
mode:
authorn1c00o <n@nc0.fr>2023-02-05 14:05:26 +0100
committerNicolas <34602094+n1c00o@users.noreply.github.com>2023-02-06 22:35:54 +0100
commitb371cb11a5877ede8847351e95c7847b5024a551 (patch)
tree958227cf8562503246976744b89370d389de5f66 /vendor/golang.org/x/sys/unix/dev_dragonfly.go
parent03e0c597ad5f3539ad33976fe02c11a9e39f34d6 (diff)
Init Go module
Diffstat (limited to 'vendor/golang.org/x/sys/unix/dev_dragonfly.go')
-rw-r--r--vendor/golang.org/x/sys/unix/dev_dragonfly.go30
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
new file mode 100644
index 0000000..8502f20
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/dev_dragonfly.go
@@ -0,0 +1,30 @@
+// 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 Dragonfly's sys/types.h header.
+//
+// The information below is extracted and adapted from sys/types.h:
+//
+// Minor gives a cookie instead of an index since in order to avoid changing the
+// meanings of bits 0-15 or wasting time and space shifting bits 16-31 for
+// devices that don't use them.
+
+package unix
+
+// Major returns the major component of a DragonFlyBSD device number.
+func Major(dev uint64) uint32 {
+ return uint32((dev >> 8) & 0xff)
+}
+
+// Minor returns the minor component of a DragonFlyBSD device number.
+func Minor(dev uint64) uint32 {
+ return uint32(dev & 0xffff00ff)
+}
+
+// Mkdev returns a DragonFlyBSD device number generated from the given major and
+// minor components.
+func Mkdev(major, minor uint32) uint64 {
+ return (uint64(major) << 8) | uint64(minor)
+}