You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: getdents.go
    path of file: ./repos/gocryptfs/contrib/getdents-debug/getdents
    
    the code of the file until where you have to start completion: //go:build linux
// +build linux

/*
Small tool to try to debug unix.Getdents problems on CIFS mounts
( https://github.com/rfjakob/gocryptfs/issues/483 )

Example output:

$ while sleep 1 ; do ./getdents /mnt/synology/public/tmp/g1 ; done
unix.Getdents fd3: n=4176, err=<nil>
unix.Getdents fd3: n=4176, err=<nil>
unix.Getdents fd3: n=4176, err=<nil>
unix.Getdents fd3: n=4176, err=<nil>
unix.Getdents fd3: n=4176, err=<nil>
unix.Getdents fd3: n=3192, err=<nil>
unix.Getdents fd3: n=0, err=<nil>
total 24072 bytes
unix.Getden
    
func main() {
	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "Usage: %s PATH\n", myName)
		fmt.Fprintf(os.Stderr, "Run getdents(2) on PATH in a 100ms loop until we hit an error\n")
		os.Exit(1)
	}
	flag.Parse()
	if flag.NArg() != 1 {
		flag.Usage()
	}
	path := flag.Arg(0)

	tmp := make([]byte, 10000)
	for i := 1; ; i++ {
		sum := 0
		fd, err := unix.Open(path, unix.O_RDONLY, 0)
		if err != nil {
			fmt.Printf("%3d: unix.Open returned err=%v\n", i, err)
			os.Exit(1)
		}
		fmt.Printf("%3d: unix.Getdents: ", i)
		for {
			n, err := unix.Getdents(fd, tmp)
			fmt.Printf("n=%d; ", n)
			if n <= 0 {
				fmt.Printf("err=%v; total %d bytes\n", err, sum)
				if err != nil {
					os.Exit(1)
				}
				break
			}
			sum += n
		}
		unix.Close(fd)
		time.Sleep(100 * time.Millisecond)
	}
}