| Bluejay Filesystem |
| ================== |
| |
| Filesystem drivers are still a work in progress. To test a file system you will |
| want to create and mount a virtual block device. The makefile in ``src/kernel`` |
| will generate an ``hd0_ext2.img`` EXT2 disk image for you automatically. The |
| default size is 32 megabytes, but you can create your own of any size if you |
| want. Once the image has been created it will be loaded by QEMU automatically. |
| |
| In order to write to the virtual hard disk from your host operating system you |
| should mount it. The ``make mount`` command in ``src/kernel`` mount the image to |
| ``$(BLUEJAY_ROOT)/mnt``. If you are using an EXT2 filesystem you should probably |
| change the owner of that directory once it is mounted so that you can write to |
| it. |
| |
| Virtual Filesystem |
| ------------------ |
| |
| The Bluejay VFS is heavily inspired by UNIX. It relies on inodes and a tree of |
| file nodes. The source can be found in ``src/kernel/vfs.c``. This also exports a |
| very low-level API for dealing with files -- including the usual read(), |
| write(), readdir(), etc -- but this should not be used for much longer. A high |
| level API utilizing file descriptors will be implemented to make this simpler. |