Method limit_range_file

block/src/qcow/mod.rs:1353–1358

Limits the range so that it doesn't exceed the virtual size of the file.

(&self, address: u64, count: usize)

    // Limits the range so that it doesn't exceed the virtual size of the file.
    fn limit_range_file(&self, address: u64, count: usize) -> usize {
        if address.checked_add(count as u64).is_none() || address > self.virtual_size() {
            return 0;
        }
        min(count as u64, self.virtual_size() - address) as usize
    }

    // Limits the range so that it doesn't overflow the end of a cluster.
    fn limit_range_cluster(&self, address: u64, count: usize) -> usize {