package performancemetrics

import "syscall"

func getDiskUsage(path string) (used, free, total uint64, err error) {
	var stat syscall.Statfs_t
	err = syscall.Statfs(path, &stat)
	if err != nil {
		return
	}

	total = stat.Blocks * uint64(stat.Bsize)
	free = stat.Bfree * uint64(stat.Bsize)
	used = total - free
	return
}