Hello,
On Sun, Dec 12, 2010 at 1:10 AM, pepone.onrez <pepone.on...@gmail.com> wrote:
> (cffi:with-foreign-object (ifa 'ifaddrs)
> (ice-cffi:getifaddrs ifa)
> (cffi:foreign-string-to-lisp (cffi:foreign-slot-value ifa 'ifaddrs
> 'name)))
Here's getifaddrs's signature:
int getifaddrs(struct ifaddrs **ifap);
getifaddrs() allocates the actual struct. Here's how it would be
called using C code:
struct ifaddrs *p;
getifaddrs(&p);
// do something with p->name
The equivalent CFFI code would be something like:
(with-foreign-object (p :pointer)
(getifaddrs p)
(foreign-slot-value (mem-ref p :pointer) 'ifaddrs 'name))
If you define NAME's type to be :STRING, that code will yield a Lisp string.
HTH,
--
Luís Oliveira
http://r42.eu/~luis/
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