-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Friday, January 3, 2003, at 02:39 PM, Eric Long wrote:
This is probably simple, but I haven't encountered this problem before
and
its not clear to me why I'm getting this problem...
I want to create a function that accepts as an argument a sockbuf*.
The
function is implemented in a C++ file, but is declared in a header
available
to call from a C file.
And a C++ source file that looks something like this:
extern "C" {
#ifndef KERNEL
#define KERNEL
#include <sys/socketvar.h>
#undef KERNEL
#else
#include <sys/socketvar.h>
#endif
When I attempt to build, I get error messages like this:
foo.h:10: forward declaration of `struct sockbuf'
foo.cp:20: invalid use of undefined type `struct sockbuf'
The puzzle is if I modify the above "example" to reference a socket
and not
a sockbuf, I get no compilation errors.
How do declare these properly so I can just use a sockbuf?
Thanks in advance,
Eric Long
sockbuf is a kernel only structure, as should be evidenced by the KERNEL define wrapper. You can't expect to define KERNEL and have things work. Secondly, sockbuf is declared in the scope of the socket structure. IOW, if you aren't writing a kernel extension, don't even attempt to use the sockbuf (or socket) structure. Brian Bergstrand <http://www.classicalguitar.net/brian/> PGP Key ID: 0xB6C7B6A2 Punctuality is the virtue of the bored. - Evelyn Waug -----BEGIN PGP SIGNATURE----- Version: PGP 8.0 iQA/AwUBPhX6gnnR2Fu2x7aiEQJeMwCggDxUEUCpP1sCZ59NknVpExc8xz8Anig/ NSie6qkYZBEj8Lq0jXNwG9qt =LbYj -----END PGP SIGNATURE----- _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.