decryptedRangeRef := func(s []int64, skipLen, readLen int64, isFromEnd bool) (o, l, skip int64, sn uint32, ps int) {
		oSize := lsum(s)
		if isFromEnd {
			skipLen = oSize - readLen
		}
		if skipLen < 0 || readLen < 0 || oSize < 0 || skipLen+readLen > oSize {
			t.Fatalf("Impossible read specified: %d %d %d", skipLen, readLen, oSize)
		}

		var cumulativeSum, cumulativeEncSum int64

		offset := r.Int63n(length)
		readLen := r.Int63n(length - offset)

		expected := data[offset : offset+readLen]

		// Get the checksums of the current part.
		bitrotReaders := make([]io.ReaderAt, len(disks))
		for index, disk := range disks {
			if disk == OfflineDisk {
				continue
			}
			tillOffset := erasure.ShardFileOffset(offset, readLen, length)

		e := readdir_r(d, &entry, &entryp)
		if e != 0 {
			return n, errnoErr(e)
		}
		if entryp == nil {
			break
		}
		if skip > 0 {
			skip--
			cnt++
			continue
		}
		reclen := int(entry.Reclen)
		if reclen > len(buf) {
			// Not enough room. Return for now.
			// The counter will let us know where we should start up again.
			// Note: this strategy for suspending in the middle and

}

func direntReclen(buf []byte) (uint64, bool) {
	return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
}

func direntNamlen(buf []byte) (uint64, bool) {
	reclen, ok := direntReclen(buf)
	if !ok {
		return 0, false
	}
	return reclen - uint64(unsafe.Offsetof(Dirent{}.Name)), true
}

func Pipe(p []int) (err error) {
	return Pipe2(p, 0)
}

}

func direntReclen(buf []byte) (uint64, bool) {
	return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
}

func direntNamlen(buf []byte) (uint64, bool) {
	reclen, ok := direntReclen(buf)
	if !ok {
		return 0, false
	}
	return reclen - uint64(unsafe.Offsetof(Dirent{}.Name)), true
}

func Gettimeofday(tv *Timeval) (err error) {
	err = gettimeofday(tv, nil)

	_, _, e1 := Syscall(SYS_MUNMAP, uintptr(addr), uintptr(length), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func readlen(fd int, buf *byte, nbuf int) (n int, err error) {
	r0, _, e1 := Syscall(SYS_READ, uintptr(fd), uintptr(unsafe.Pointer(buf)), uintptr(nbuf))
	n = int(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

	_, _, e1 := Syscall(SYS_MUNMAP, uintptr(addr), uintptr(length), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func readlen(fd int, buf *byte, nbuf int) (n int, err error) {
	r0, _, e1 := Syscall(SYS_READ, uintptr(fd), uintptr(unsafe.Pointer(buf)), uintptr(nbuf))
	n = int(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

	_, _, e1 := Syscall(SYS_MUNMAP, uintptr(addr), uintptr(length), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func readlen(fd int, buf *byte, nbuf int) (n int, err error) {
	r0, _, e1 := Syscall(SYS_READ, uintptr(fd), uintptr(unsafe.Pointer(buf)), uintptr(nbuf))
	n = int(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

	_, _, e1 := Syscall(SYS_MUNMAP, uintptr(addr), uintptr(length), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func readlen(fd int, buf *byte, nbuf int) (n int, err error) {
	r0, _, e1 := Syscall(SYS_READ, uintptr(fd), uintptr(unsafe.Pointer(buf)), uintptr(nbuf))
	n = int(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

	_, _, e1 := Syscall(SYS_MUNMAP, uintptr(addr), uintptr(length), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func readlen(fd int, buf *byte, nbuf int) (n int, err error) {
	r0, _, e1 := Syscall(SYS_READ, uintptr(fd), uintptr(unsafe.Pointer(buf)), uintptr(nbuf))
	n = int(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}