Can I read the gcache mmap?

gistfile1.go

package main

import "github.com/riobard/go-mmap"
import "fmt"
import "os"

func main() {
        file, err := os.Open( "/gcache/galera.cache")
        if err != nil {
                panic( err )
        }
        fmt.Println( "Opened")

        gcache, err := mmap.Map( file, 4096, 50000000000, mmap.PROT_READ, mmap.MAP_SHARED )
        if err != nil {
                panic( err )
        }

        for i := 0; i < 4096; i++ {
                fmt.Println( "str: ", string(gcache[i:(i+64)]))
        }

}