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Change default hostname resolution order

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Hostnames that contain at least one period, are now first attempted
to be resolved as FQDNs, before adding local domains is tried.
This commit is contained in:
David van Moolenbroek 2010-06-10 11:14:36 +00:00
parent 65764218f7
commit 2758519ed2
1 changed files with 11 additions and 11 deletions
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22
lib/libc/ip/res_query.c
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@ -175,7 +175,17 @@ res_search(name, class, type, answer, anslen)
return (res_query(cp, class, type, answer, anslen));
/*
* We do at least one level of search if
* First try the name as fully-qualified, but only if it contained
* at least one dot (even trailing). This is purely a heuristic; we
* assume that any reasonable query about a top-level domain (for
* servers, SOA, etc) will not use res_search.
*/
if (n && (ret = res_querydomain(name, (char *)NULL, class, type,
answer, anslen)) > 0)
return (ret);
/*
* If the FQDN lookup failed, we do at least one level of search if
* - there is no dot and RES_DEFNAME is set, or
* - there is at least one dot, there is no trailing dot,
* and RES_DNSRCH is set.
@ -209,16 +219,6 @@ res_search(name, class, type, answer, anslen)
(_res.options & RES_DNSRCH) == 0)
break;
}
/*
* If the search/default failed, try the name as fully-qualified,
* but only if it contained at least one dot (even trailing).
* This is purely a heuristic; we assume that any reasonable query
* about a top-level domain (for servers, SOA, etc) will not use
* res_search.
*/
if (n && (ret = res_querydomain(name, (char *)NULL, class, type,
answer, anslen)) > 0)
return (ret);
if (got_nodata)
h_errno = NO_DATA;
return (-1);