moby/pkg/system/mknod.go
Artem Khramov f3d3994a4b
Port pkg/system/mknod.go to FreeBSD
Because FreeBSD uses 64-bit device nodes (see
https://reviews.freebsd.org/rS318736), Linux implementation of
`system.Mknod` & `system.Mkdev` is not sufficient.

This change adds freebsd-specific implementations for `Mknod` and
Mkdev`.

Signed-off-by: Artem Khramov <akhramov@pm.me>
2021-09-22 09:47:35 +03:00

17 lines
609 B
Go

//go:build !windows
// +build !windows
package system // import "github.com/docker/docker/pkg/system"
import (
"golang.org/x/sys/unix"
)
// Mkdev is used to build the value of linux devices (in /dev/) which specifies major
// and minor number of the newly created device special file.
// Linux device nodes are a bit weird due to backwards compat with 16 bit device nodes.
// They are, from low to high: the lower 8 bits of the minor, then 12 bits of the major,
// then the top 12 bits of the minor.
func Mkdev(major int64, minor int64) uint32 {
return uint32(unix.Mkdev(uint32(major), uint32(minor)))
}