forty-bot/lean

Linux driver for the LEAN filesystem

lean

Based on LEAN v0.6.1.

Currently supports reading. Write support under development.

Significant reference made to krinkinmu's fs, and to the ext2 drivers.

Contributing

All code in this repository should conform to the Linux kernel coding style. Current areas of improvement include

• Adding an option to populate a newly-created filesystem in mkfs
• Creating an automated-testing framework
• Deleting files

lean's Issues

Limit filenames to 255 bytes

At the moment, we must support filenames of up to 4068 bytes. In addition to not being supported by either Linux or any other major OS, excessively long filenames are both unneccessary and unweildy.

To implement this, the type of lean_dir_entry.name_length would be changed to a uint8_t, and LEAN_DIR_NAME_MAX would be redefined to be 255.

 struct lean_dir_entry {                                                          
        le64 inode;                                                              
        uint8_t type;
        uint8_t entry_length;
        uint8_t name_length;   
        uint8_t name[5];
} __packed;                                                                      
                                                                                 
#define LEAN_DIR_NAME_MAX 255