[cffi-devel] Providing access to errno in CFFI-SYS

[James Bielman]

On Mon, 2006-01-02 at 11:44 +0100, Hoehle, Joerg-Cyril wrote:

> May I suggest you defined a CLCS condition, so there's
> a) a known slot where to get the errno value (instead of pulling it
> out of a string)
> b) a known condition and a possibility to hook in with HANDLER-BIND
> etc.?
> 
> I believe exporting an interface to errno from CFFI will avoid many
> headaches to users (writing unportable or otherwise broken code to get
> its value). Please go ahead and include this stuff in the main tree,
> not examples/.

Yeah, I would like to do this as well, but I'm still figuring out how to
get access to 'errno' in all the supported Lisps.

> >haven't found anything in Allegro CL or CLISP (Jörg?) for this yet.
> See clisp/modules/bindings/glibc/linux.lisp as a source of inspiration
> & read the comments about errno there.  It's hairy indeed.

I'm not an expert CLISP user---is this not built as a part of the
standard image?  I went APROPOSing around for "errno" and didn't find
anything.

James