ext2 0.1.1

Read and write on Ext2 partitions without mount
Documentation 
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//! This module provide header structures and methods for EXT2 filesystems
mod block_group;
mod superblock;

pub use super::div_rounded_up;
use super::Block;
pub use block_group::BlockGroupDescriptor;
pub use superblock::SuperBlock;

// *** Header of EXT2 partition ***
// 0            1024         2048
// +------------+------------+-------------->
// |    1024    |  Super     | Block group
// |    free    |  Block     | Descriptor Table
// +-------------------------+-------------->
//
// *** Block group descriptor table ***
// 0              32             64             96
// +--------------+--------------+--------------+------------->
// | block group  | block group  | block group  | block group
// | descriptor 1 | descriptor 2 | descriptor 3 | descriptor N
// +--------------+--------------+--------------+------------->