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Diffstat (limited to 'community/flavioc.mdwn')
| -rw-r--r-- | community/flavioc.mdwn | 39 |
1 files changed, 29 insertions, 10 deletions
diff --git a/community/flavioc.mdwn b/community/flavioc.mdwn index a0c0d036..de4741f8 100644 --- a/community/flavioc.mdwn +++ b/community/flavioc.mdwn @@ -16,7 +16,7 @@ Some [Hurd stuff](http://opensvn.csie.org/leic/hurd/) And code: [cl-hurd](http://freehg.org/u/flavioc/cl-hurd/) -hg clone http://freehg.org/u/flavioc/cl-hurd/ +hg clone [http://freehg.org/u/flavioc/cl-hurd/](http://freehg.org/u/flavioc/cl-hurd/) ## Summer session @@ -25,11 +25,18 @@ Creating an extensible translator library in lisp using the mig generated stubs. ### What's done - The library for writing translators is mostly written. -- This library is intended to implement virtual filesystems. Examples are: translators were data is located in a local file (like zipfs, tarfs, rarfs, ...), single file translators (that do content filtering, output of a command, etc), network based filesystems (ftpfs, httpfs, ...) -- Right now, what's missing is: support for symlinks, file execution, and setting other translators on our node tree. +- This library is intended to implement virtual filesystems. Examples are: translators were data is located in a local file (like zipfs, tarfs, rarfs, ...), single file translators (that do content filtering, output of a command, etc), network based filesystems (ftpfs, httpfs, ...), proxy filesystems (like hostmux, usermux, etc..) - It's possible to specialize the basic translator library and implement new translator classes. This is done using CLOS. - There is a tree-translator class that makes the managing of a node tree very easy, doing all the work for us, through a simple directory API and implementing the directory callbacks for us. - There is a simple example (something like zipfs) translator that can expose the directories and file contents of a ZIP file. +- More translator examples include: + - /dev/null translator. + - /dev/zero translator. + - translator that creates a symlink node. + - tmpfs like translator. + - a translator that does proxying between clients and the underlying translator returning all data in upper-case. + - a translator that watches for changes in a file describing the file system structure. + - an IRC translator. - Translator options (manipulated through fsysopts) have a simple and easy to use API. - All the Mach port manipulation API is available. - It's possible to send and receive messages. Simple example: @@ -44,21 +51,33 @@ Creating an extensible translator library in lisp using the mig generated stubs. - New message types (like :string, :integer) can be implemented, providing a powerful extension mechanism. - Creation of symlinks and symlink path resolution. - Creation of character/block devices, fifos and sockets. +- Patch that opens stdin + stdout to /dev/null. +- Project has been separated into 5 ASDF installable systems: + - hurd-common + - mach + - hurd + - hurd-translator + - tree-translator +- Test cases are now written. ### What needs to be done -- Using continuations for IO blocking operations. This can be done using cl-cont. -- Callbacks: - - file_lock, file_lock_stat (still not sure if they are really needed) - - file_reparent -- Bind the client RPC calls. +- Fix fsys-getroot (block happens in trivfs based translators, when they do RPC's to me when I call fsys_getroot to them) and fetch-root (for passive translators). - Use the socket stubs? +- Documentation +- Integrate upstream: + - Done, but still not commited. -### Notes +### Project dependencies + +- CLISP +- [CFFI](http://common-lisp.net/project/cffi/) (apt-get installable) +- [Flexi streams](http://www.weitz.de/flexi-streams/) (apt-get installable) +- [Trivial garbage](http://www.cliki.net/trivial-garbage) (not in debian repositories) +- [cl-zip](http://common-lisp.net/project/zip/) (only needed for the example translator) -- File execution is complicated to do, because there is no multithreading support on CLisp and continuations won't do it. Maybe forking the clisp process?. ## To do |