Function offset_is_cluster_boundary

block/src/qcow/header.rs:600–605

Returns an Error if the given offset doesn't align to a cluster boundary.

(offset: u64, cluster_bits: u32)

/// Returns an Error if the given offset doesn't align to a cluster boundary.
pub(super) fn offset_is_cluster_boundary(offset: u64, cluster_bits: u32) -> Result<()> {
    if offset & ((0x01 << cluster_bits) - 1) != 0 {
        return Err(Error::InvalidOffset(offset));
    }
    Ok(())
}