Jessica,

On Sun, Dec 26, 2021 at 07:07:06PM +0000, Jessica Clarke wrote:
J> > +struct prison_ip {
J> > +  struct epoch_context ctx;
J> > +  uint32_t        ips;
J> > +#ifdef FUTURE_C
J> > +  union {
J> > +          struct in_addr pr_ip4[];
J> > +          struct in6_addr pr_ip6[];
J> > +  };
J> > +#else /* No future C :( */
J> > +#define   PR_IP(pip, i)   ((const char *)((pip) + 1) + 
pr_families[af].size * (i))
J> > +#define   PR_IPD(pip, i)  ((char *)((pip) + 1) + pr_families[af].size * 
(i))
J> > +#endif
J> > +};
J> 
J> You can make this work with a prison_ip base and prison_ipv[46] derived
J> structs.
J> 
J> As it stands this is quite gross, you’re assuming things about
J> alignment, and don’t even have a flexible char[] at the end to
J> represent the extra data.

Will adding char [] to the end be sufficient to guarantee proper alignment?

Using prison_ipv[46] derived structs won't work as most functions are now
made protocol independent.

-- 
Gleb Smirnoff

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