Re: libpcap on linux issue

[Darren Reed <darrenr () reed wattle id au>]

In some email I received from Guy Harris, sie wrote:
> 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>?

# find /usr/include -print | xargs grep SA_LEN
/usr/include/linux/atm.h:#define        ATM_ESA_LEN     20              /* ATM End System Address length */
/usr/include/linux/atm.h:        unsigned char  prv[ATM_ESA_LEN];/* private ATM address */
/usr/include/linux/atmlec.h:                        unsigned char atm_addr[ATM_ESA_LEN];
/usr/include/linux/atmlec.h:                        unsigned char atm_addr[ATM_ESA_LEN]; /* reqestor ATM addr */
/usr/include/linux/atmlec.h:        unsigned char atm_addr[ATM_ESA_LEN];
/usr/include/linux/atmmpc.h:        uint8_t   eg_MPC_ATM_addr[ATM_ESA_LEN];
/usr/include/linux/atmmpc.h:        uint8_t   in_MPC_data_ATM_addr[ATM_ESA_LEN];
/usr/include/linux/atmmpc.h:        uint8_t  MPS_ctrl[ATM_ESA_LEN];

Darren
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