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156960 |
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21-Mar-2006 |
ume |
Update the resolver in libc to BIND9's one.
Since, res_sendsigned(3) and the friends use MD5 functions, it is hard to include them without having MD5 functions in libc. So, res_sendsigned(3) is not merged into libc.
Since, res_update(3) in BIND9 is not binary compatible with our res_update(3), res_update(3) is leaved as is, except some necessary modifications. The res_update(3) and the friends are not essential part of the resolver. They are not defined in resolv.h but defined in res_update.h separately in BIND9. Further, they are not called from our tree. So, I hide them from our resolv.h, but leave them only for binary backward compatibility (perhaps, no one calls them).
Since, struct __res_state_ext is not exposed in BIND9, I hide it from our resolv.h. And, global variable _res_ext is removed. It breaks binary backward compatibility. But, since it is not used from outside of our libc, I think it is safe.
Reviewed by: arch@ (no objection)
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78012 |
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10-Jun-2001 |
ume |
Implement EDNS0 support, as EDNS0 support will be made mandatory for IPv6 transport-ready resolvers/DNS servers. Need careful configuration when enable it. (default config is not affected). See manpage for details.
XXX visible symbol __res_opt() is added, however, it is not supposed to be called from outside, libc minor is not bumped.
Obtained from: KAME/NetBSD
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