Re: libpcap on linux issue

[Guy Harris <guy () alum mit edu>]

On Wed, Feb 12, 2003 at 03:06:19AM -0800, Guy Harris wrote:
> On Wed, Feb 12, 2003 at 02:39:35PM +1100, Darren Reed wrote:
> > Now on this particular linux system, none of the header files in the
> > /usr/include directory tree define SA_LEN
>
> Not even <sys/socket.h>, which, in glibc 2.3 does
>
>       /* Return the length of a `sockaddr' structure.  */
>       #ifdef _HAVE_SA_LEN
>       # define SA_LEN(_x)      (_x)->sa_len   
>       #else
>       extern int __libc_sa_len (sa_family_t __af);
>       extern int __libc_sa_len_internal (sa_family_t __af) attribute_hidden;
>       # ifndef NOT_IN_libc
>       #  define SA_LEN(_x)      INTUSE(__libc_sa_len)((_x)->sa_family)
>       # else
>       #  define SA_LEN(_x)      __libc_sa_len((_x)->sa_family)
>       # endif
>       #endif

OK, what about "/usr/include/bits/sockaddr.h" or
"/usr/include/bits/socket.h"?  Does one of them define SA_LEN and, if
so, does that header eventually get included by <sys/socket.h>?

On an RH system here, "bits/sockaddr.h" defines SA_LEN, and it's
included by "bits/socket.h", which is included by <sys/socket.h>.
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