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# Roadmap
## Plans for soon
* Write device drivers : keyboard, FAT (or EXT2 ?)
* Work on userland : init, terminal emulator, shell
* GUI server with help from kernel for framebuffer management
## Things to design
* Reclaiming physical memory :
- Freeing some cached stuff, ie swapping pages from mmap regions
- Swapping pages from processes non-mmap regions (ie real data regions)
* Better handling of errors (rather than panicing) ; userspace apps should not
have the possibility of crashing the system
* How does a process transmit information (such as environment, arguments, file
descriptors) to its children ?
* How do we do stream-like IO on files ? (ie how do we implement the append
* access mode
and non-position-dependant read/write calls & seek call)
* Better error reporting for system calls that fail
## Things not sure
* VFS thread safety : is the design correct ? (probably)
* Cache architecture (called *pager*, after 4.4BSD terminology)
* Not enough tests!
## Plans for the later future
* Define a format for "packages", i.e. read-only filesystem images used for
* adding system
components or apps to the OS ; make sure to implement it in a way that does
not waste memory
* Module system for extending the kernel In userspace, simple Scheme-like
* scripting language POSIX compatibility layer, self-hosting OS The obvious
* stuff ;-)
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