From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael Kerrisk (man-pages)" Subject: Re: [PATCH] resolver.3: documents missing options used by _res structure defined in resolv.h and indicates defaults options Date: Sun, 08 Mar 2015 09:20:18 +0100 Message-ID: <54FC0642.6050800@gmail.com> References: <20090505194602.GA7897@cavendish.icomputing.pl> <1425761903-22748-1-git-send-email-saulery@free.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <1425761903-22748-1-git-send-email-saulery-GANU6spQydw@public.gmane.org> Sender: linux-man-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: =?UTF-8?B?U3TDqXBoYW5lIEF1bGVyeQ==?= Cc: mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, 527136-forwarded-61a8vm9lEZVf4u+23C9RwQ@public.gmane.org, linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-man@vger.kernel.org Hi St=C3=A9phane, Good stuff. See comments below. Coud you amend and resubmit. On 03/07/2015 09:58 PM, St=C3=A9phane Aulery wrote: > Missing options: RES_INSECURE1, RES_INSECURE2, RES_NOALIASES, USE_INE= T6, > ROTATE, NOCHECKNAME, RES_KEEPTSIG, BLAST, USEBSTRING, NOIP6DOTINT, US= E_EDNS0, > SNGLKUP, SNGLKUPREOP, RES_USE_DNSSEC, NOTLDQUERY, DEFAULT >=20 > Written from the glibc source and resolv.conf.5. >=20 > Debian bug #527136 reported by Jakub Wilk [1] >=20 > [1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=3D527136 >=20 > Signed-off-by: St=C3=A9phane Aulery > --- > man3/resolver.3 | 86 +++++++++++++++++++++++++++++++++++++++++++++++= ++++++---- > 1 file changed, 81 insertions(+), 5 deletions(-) >=20 > diff --git a/man3/resolver.3 b/man3/resolver.3 > index 19c4192..1b22708 100644 > --- a/man3/resolver.3 > +++ b/man3/resolver.3 > @@ -204,7 +204,7 @@ implemented]. > Use TCP connections for queries rather than UDP datagrams. > .TP > .B RES_PRIMARY > -Query primary domain name server only. > +Query primary domain name server only. [Not currently implemented]. New sentence on new source line please. And (many) other instances belo= w. > .TP > .B RES_IGNTC > Ignore truncation errors. > @@ -238,10 +238,86 @@ domain and in parent domains. > This option is used by > .BR gethostbyname (3). > [Enabled by default]. > -.PP > -This list is not complete. > -You can find some other flags described in > -.BR resolv.conf (5). > +.TP > +.B RES_INSECURE1 > +Accept a response from a wrong server and show it on stdout (for deb= ug s/stdout/standard output/ And other instances below. > +purpose only). > +.TP > +.B RES_INSECURE2 > +Accept a response which contains a wrong query and show it on stdout= (for > +debug purpose only). > +.TP > +.B RES_NOALIASES > +Disable usage of > +.B HOSTALIASES > +environment variable. > +.TP > +.B RES_USE_INET6 > +Try a AAAA query before an A query inside the s/a AAAA/an AAAA/ > +.BR gethostbyname () > +function, and map IPv4 responses in IPv6 "tunneled form" if no AAAA > +records are found but an A record set exists. > +.TP > +.B RES_ROTATE > +Causes round-robin selection of name servers from among those listed= =2E This New sentence on new source line please. > +has the effect of spreading the query load among all listed servers,= rather > +than having all clients try the first listed server first every time= =2E > +.TP > +.B RES_NOCHECKNAME > +Disable the modern BIND checking of incoming hostnames and mail name= s > +for invalid characters such as underscore (_), non-ASCII, or control > +characters. [Not currently implemented]. > +.TP > +.B RES_KEEPTSIG > +Do not strip TSIG records. [Not currently implemented]. > +.TP > +.B RES_BLAST > +When resolvers want to even out the load on their nameservers, follo= wing > +them.=20 I do not understand that last sentence. Could you clarify please. > Note this option overrides > +.BR RES_ROTATE . > +.TP > +.B RES_USEBSTRING > +Make reverse IPv6 lookups using the bit-label format described in RF= C 2673; > +if this option is not set, then nibble format is used (since glibc 2= =2E3.4). Does the "(since glibc 2.3.4)" apply to the option, or to the "then nibble format is used"? It's not clear. If the former, then write =2EBR RES_USEBSTRING " (since glibc 2.3.4)" If the latter, then write "then (since glibc 2.3.4) nibble format is used". > +.TP > +.B RES_NOIP6DOTINT > +Use > +.I ip6.arpa > +zone in IPv6 reverse lookup instead of > +.I ip6.int s/.I ip6.int./IR ip6.int ,/ > +which is deprecated since glibc 2.3.4. [Enabled by default]. > +.TP > +.B RES_USE_EDNS0 > +Enables support for the DNS extensions (EDNS0) described in RFC 2671= (since > +glibc 2.6). I think above, we want: =2ETP =2EBR RES_USE_EDNS0 " (since glibc 2.6)" (This is the usual way that man-pages documents the release version=20 for options.) > +.TP > +.B RES_SNGLKUP > +By default, glibc performs IPv4 and IPv6 lookups in parallel since v= ersion > +2.9. Some appliance DNS servers cannot handle these queries properly= and > +make the requests time out. This option disables the behavior and ma= kes > +glibc perform the IPv6 and IPv4 requests sequentially (at the cost o= f some > +slowdown of the resolving process) (since glibc 2.10). =2ETP =2EBR RES_SNGLKUP " (since glibc 2.10)" ? > +.TP > +.B RES_SNGLKUPREOP > +When > +.B RES_SNGLKUP > +option is enabled, opens a new socket for the each request. > +.TP > +.B RES_USE_DNSSEC > +Use DNSSEC with OK bit in OPT record. This option implies > +.BR RES_USE_EDNS0 . > +.TP > +.B RES_NOTLDQUERY > +Do not look up unqualified name as a TLD. s/TLD/top-level domain (TLD)/ > +.TP > +.B RES_DEFAULT > +Default option which implies: > +.BR RES_RECURSE , > +.BR RES_DEFNAMES , > +.BR RES_DNSRCH > +and > +.BR RES_NOIP6DOTINT . > + > .SH RETURN VALUE > The > .BR res_init () Thanks, Michael --=20 Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/ -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html