[Dnsmasq-discuss] NETLINK_NO_ENOBUFS not defined on old platforms

[Simon Kelley]

http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=0506a5ed4e56863627c54aedad30ad61221292ef


should handle both old kernel header files and old kernels, in any
combination.



Cheers,

Simon.


On 19/03/2020 13:16, Petr Gotthard wrote:
> Hello,
> 
> The commit
> http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commitdiff;h=1627d577af03cdf747285e79fa747b6aaae8033f
> 
> introduced NETLINK_NO_ENOBUFS, which is not available on some ancient platforms (which are however still in use).
> 
> The build of 2.81rc4 fails on these platforms now.
> Would it be possible to have #ifdefs around that, please?
> 
> 
> Regards,
> Petr
> 
> diff -Nru dnsmasq-2.81rc4/src/netlink.c dnsmasq-2.81rc4.modified/src/netlink.c
> --- dnsmasq-2.81rc4/src/netlink.c       2020-03-19 13:54:37.804346907 +0100
> +++ dnsmasq-2.81rc4.modified/src/netlink.c      2020-03-19 13:53:14.868860449 +0100
> @@ -79,7 +79,9 @@
>      }
> 
>    if (daemon->netlinkfd == -1 ||
> +#ifdef NETLINK_NO_ENOBUFS
>        setsockopt(daemon->netlinkfd, SOL_NETLINK, NETLINK_NO_ENOBUFS, &opt, sizeof(opt)) == -1 ||
> +#endif
>        getsockname(daemon->netlinkfd, (struct sockaddr *)&addr, &slen) == -1)
>      die(_("cannot create netlink socket: %s"), NULL, EC_MISC);
> 
> 
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