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Define and implement RES_USE_DNSSEC option in resolver.

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This commit is contained in:
Adam Tkac
2009-07-27 07:33:48 -07:00
committed by Ulrich Drepper
parent 09cd1f5754
commit 2d0671cbbd
5 changed files with 26 additions and 5 deletions
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8
resolv/res_query.c
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@ -147,7 +147,7 @@ __libc_res_nquery(res_state statp,
if (n > 0)
{
if ((oflags & RES_F_EDNS0ERR) == 0
&& (statp->options & RES_USE_EDNS0) != 0)
&& (statp->options & (RES_USE_EDNS0|RES_USE_DNSSEC)) != 0)
{
n = __res_nopt(statp, n, query1, bufsize, anslen / 2);
if (n < 0)
@ -169,7 +169,7 @@ __libc_res_nquery(res_state statp,
NULL, query2, bufsize - nused);
if (n > 0
&& (oflags & RES_F_EDNS0ERR) == 0
&& (statp->options & RES_USE_EDNS0) != 0)
&& (statp->options & (RES_USE_EDNS0|RES_USE_DNSSEC)) != 0)
n = __res_nopt(statp, n, query2, bufsize - nused - n,
anslen / 2);
nquery2 = n;
@ -184,7 +184,7 @@ __libc_res_nquery(res_state statp,
if (n > 0
&& (oflags & RES_F_EDNS0ERR) == 0
&& (statp->options & RES_USE_EDNS0) != 0)
&& (statp->options & (RES_USE_EDNS0|RES_USE_DNSSEC)) != 0)
n = __res_nopt(statp, n, query1, bufsize, anslen);
nquery1 = n;
@ -203,7 +203,7 @@ __libc_res_nquery(res_state statp,
}
if (__builtin_expect (n <= 0, 0)) {
/* If the query choked with EDNS0, retry without EDNS0. */
if ((statp->options & RES_USE_EDNS0) != 0
if ((statp->options & (RES_USE_EDNS0|RES_USE_DNSSEC)) != 0
&& ((oflags ^ statp->_flags) & RES_F_EDNS0ERR) != 0) {
statp->_flags |= RES_F_EDNS0ERR;
#ifdef DEBUG