Golang major minor device numbers

gistfile1.txt

package main

import (
  "flag"
	"fmt"
	"syscall"
	// #include <sys/sysmacros.h>
	"C"
)

var statfile = flag.String("s", "/dev/sda", "default file/device to stat")

// from: https://github.com/d3zd3z/gosure/blob/master/src/linuxdir/linuxdir.go
// Extract major and minor numbers.
// This is a strange linux-modern-libc non-macro version.
func Major(dev uint64) uint64 {
	return uint64(C.gnu_dev_major((C.ulonglong)(dev)))
}

func Minor(dev uint64) uint64 {
	return uint64(C.gnu_dev_minor((C.ulonglong)(dev)))
}

func main() {

	flag.Parse()

	// stat := syscall.Statfs_t{}
	stat := syscall.Stat_t{}
	err := syscall.Stat(*statfile, &stat)
	if err != nil {
		fmt.Println("Error", err)
	}
	fmt.Println(stat)
	fmt.Println(Major(stat.Rdev), Minor(stat.Rdev))

}