Internals of ext2fs

Inodes

        uid_t                   i_uid;
        gid_t                   i_gid;

        loff_t                  i_size;

        time_t                  i_atime;
        time_t                  i_mtime;
        time_t                  i_ctime;

atime is the last access time; it's updated whenever the file is read or written
mtime is the last modification time; it's updated whenever the file is written
ctime is the inode change time. It's updated whenever the inode changes
- Since reads and writes modify the atime, the ctime is also updated then

        unsigned long           i_blocks;