typedef struct {
    uint8_t     owner;              /* Owner ID */
    uint8_t     group;              /* Group ID */
    uint16_t    permissions;        /* <d,f,c,p>rwxrwxrwx */
    uint32_t    hard_link_count;    /* reference count, when hit 0 */
    time_t      last_access;        /* read(2) change */
    time_t      last_modification;  /* any time metadata changes */
    time_t      last_change;        /* write(2) change */
    uint64_t    size;               /* size of the file in bytes */
    data_block_number direct_nodes[NUM_DIRECT_INODES]; /* data_blocks */
    data_block single_indirect;     /* points to a singly indirect block */
} inode;