1 files changed, 47 insertions, 46 deletions

diff --git a/src/lib/libc/net/resolver.3 b/src/lib/libc/net/resolver.3
index 99abe17f03..4d5402ed2d 100644
--- a/src/lib/libc/net/resolver.3
+++ b/src/lib/libc/net/resolver.3
@@ -1,4 +1,4 @@
-.\"     $NetBSD: resolver.3,v 1.5 1995/02/25 06:21:02 cgd Exp $
+.\"     $OpenBSD: resolver.3,v 1.15 2001/04/03 20:09:08 aaron Exp $
 .\"
 .\" Copyright (c) 1985, 1991, 1993
 .\"     The Regents of the University of California.  All rights reserved.
@@ -31,11 +31,9 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"     @(#)resolver.3  8.1 (Berkeley) 6/4/93
-.\"
 .Dd June 4, 1993
 .Dt RESOLVER 3
-.Os BSD 4.3
+.Os
 .Sh NAME
 .Nm res_query ,
 .Nm res_search ,
@@ -50,6 +48,7 @@
 .Fd #include <netinet/in.h>
 .Fd #include <arpa/nameser.h>
 .Fd #include <resolv.h>
+.Ft int
 .Fo res_query
 .Fa "char *dname"
 .Fa "int class"
@@ -57,6 +56,7 @@
 .Fa "u_char *answer"
 .Fa "int anslen"
 .Fc
+.Ft int
 .Fo res_search
 .Fa "char *dname"
 .Fa "int class"
@@ -64,6 +64,7 @@
 .Fa "u_char *answer"
 .Fa "int anslen"
 .Fc
+.Ft int
 .Fo res_mkquery
 .Fa "int op"
 .Fa "char *dname"
@@ -75,13 +76,16 @@
 .Fa "char *buf"
 .Fa "int buflen"
 .Fc
+.Ft int
 .Fo res_send
 .Fa "char *msg"
 .Fa "int msglen"
 .Fa "char *answer"
 .Fa "int anslen"
 .Fc
-.Fn res_init 
+.Ft int
+.Fn res_init "void"
+.Ft int
 .Fo dn_comp
 .Fa "char *exp_dn"
 .Fa "char *comp_dn"
@@ -89,6 +93,7 @@
 .Fa "char **dnptrs"
 .Fa "char **lastdnptr"
 .Fc
+.Ft int
 .Fo dn_expand
 .Fa "u_char *msg"
 .Fa "u_char *eomorig"
@@ -97,22 +102,22 @@
 .Fa "int length"
 .Fc
 .Sh DESCRIPTION
-These routines are used for making, sending and interpreting
+These routines are used for making, sending, and interpreting
 query and reply messages with Internet domain name servers.
 .Pp
 Global configuration and state information that is used by the
 resolver routines is kept in the structure
-.Em _res .
+.Li _res .
 Most of the values have reasonable defaults and can be ignored.
-Options
-stored in
-.Em _res.options
+Options stored in
+.Li _res.options
 are defined in
-.Pa resolv.h
+.Aq Pa resolv.h
 and are as follows.
-Options are stored as a simple bit mask containing the bitwise ``or''
+Options are stored as a simple bit mask containing the bitwise
+.Tn OR
 of the options enabled.
-.Bl -tag -width RES_DEFNAMES
+.Bl -tag -width RES_USE_INET6
 .It Dv RES_INIT
 True if the initial name server address and default domain name are
 initialized (i.e.,
@@ -137,8 +142,7 @@ Used with
 .Dv RES_USEVC
 to keep the
 .Tn TCP
-connection open between
-queries.
+connection open between queries.
 This is useful only in programs that regularly do many queries.
 .Tn UDP
 should be the normal mode used.
@@ -165,16 +169,20 @@ will search for host names in the current domain and in parent domains; see
 This is used by the standard host lookup routine
 .Xr gethostbyname 3 .
 This option is enabled by default.
+.It Dv RES_USE_INET6
+Enables support for IPv6-only applications.
+This causes IPv4 addresses to be returned as an IPv4 mapped address.
+For example, 10.1.1.1 will be returned as ::ffff:10.1.1.1.
+The option is not meaningful on
+.Ox .
 .El
 .Pp
 The
 .Fn res_init
-routine
-reads the configuration file (if any; see
+routine reads the configuration file (if any; see
 .Xr resolv.conf 5 )
-to get the default domain name,
-search list and
-the Internet address of the local name server(s).
+to get the default domain name, search list, and the Internet address
+of the local name server(s).
 If no server is configured, the host running
 the resolver is tried.
 The current domain name is defined by the hostname
@@ -212,7 +220,7 @@ The query requests information of the specified
 .Fa type
 and
 .Fa class
-for the specified fully-qualified domain name
+for the specified fully qualified domain name
 .Fa dname .
 The reply message is left in the
 .Fa answer
@@ -224,8 +232,7 @@ The
 .Fn res_search
 routine makes a query and awaits a response like
 .Fn res_query ,
-but in addition, it implements the default and search rules
-controlled by the
+but in addition, it implements the default and search rules controlled by the
 .Dv RES_DEFNAMES
 and
 .Dv RES_DNSRCH
@@ -236,11 +243,9 @@ The remaining routines are lower-level routines used by
 .Fn res_query .
 The
 .Fn res_mkquery
-function
-constructs a standard query message and places it in
+function constructs a standard query message and places it in
 .Fa buf .
-It returns the size of the query, or \-1 if the query is
-larger than
+It returns the size of the query, or \-1 if the query is larger than
 .Fa buflen .
 The query type
 .Fa op
@@ -250,26 +255,23 @@ but can be any of the query types defined in
 .Aq Pa arpa/nameser.h .
 The domain name for the query is given by
 .Fa dname .
-.Fa Newrr
+.Fa newrr
 is currently unused but is intended for making update messages.
 .Pp
 The
 .Fn res_send
-routine
-sends a pre-formatted query and returns an answer.
+routine sends a pre-formatted query and returns an answer.
 It will call
 .Fn res_init
 if
 .Dv RES_INIT
 is not set, send the query to the local name server, and
 handle timeouts and retries.
-The length of the reply message is returned, or
-\-1 if there were errors.
+The length of the reply message is returned, or \-1 if there were errors.
 .Pp
 The
 .Fn dn_comp
-function
-compresses the domain name
+function compresses the domain name
 .Fa exp_dn
 and stores it in
 .Fa comp_dn .
@@ -278,24 +280,23 @@ The size of the array pointed to by
 .Fa comp_dn
 is given by
 .Fa length .
-The compression uses
-an array of pointers
+The compression uses an array of pointers
 .Fa dnptrs
-to previously-compressed names in the current message.
-The first pointer points to
+to previously compressed names in the current message.
+The first pointer points
 to the beginning of the message and the list ends with
 .Dv NULL .
 The limit to the array is specified by
 .Fa lastdnptr .
 A side effect of
 .Fn dn_comp
-is to update the list of pointers for
-labels inserted into the message
+is to update the list of pointers for labels inserted into the message
 as the name is compressed.
 If
 .Em dnptr
 is
-.Dv NULL, names are not compressed.
+.Dv NULL ,
+names are not compressed.
 If
 .Fa lastdnptr
 is
@@ -304,8 +305,7 @@ the list of labels is not updated.
 .Pp
 The
 .Fn dn_expand
-entry
-expands the compressed domain name
+entry expands the compressed domain name
 .Fa comp_dn
 to a full domain name
 The compressed name is contained in a query or reply message;
@@ -319,20 +319,21 @@ The size of compressed name is returned or \-1 if there was an error.
 .Sh FILES
 .Bl -tag -width Pa
 /etc/resolv.conf
-The configuration file
+configuration file
 see
 .Xr resolv.conf 5 .
 .El
 .Sh SEE ALSO
 .Xr gethostbyname 3 ,
-.Xr named 8 ,
 .Xr resolv.conf 5 ,
 .Xr hostname 7 ,
+.Xr named 8
 .Pp
 .%T RFC1032 ,
 .%T RFC1033 ,
 .%T RFC1034 ,
 .%T RFC1035 ,
+.%T RFC1535 ,
 .%T RFC974
 .Rs
 .%T "Name Server Operations Guide for BIND"
@@ -340,5 +341,5 @@ see
 .Sh HISTORY
 The
 .Nm
-function appeared in 
+function appeared in
 .Bx 4.3 .