lwres_hstrerror.3

bind 9.3结合mysql数据库

.\" Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
.\" Copyright (C) 2000, 2001  Internet Software Consortium.
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.\" $Id: lwres_hstrerror.3,v 1.13.2.1.8.1 2004/03/06 07:41:43 marka Exp $
.\"
.TH "LWRES_HSTRERROR" "3" "Jun 30, 2000" "BIND9" ""
.SH NAME
lwres_herror, lwres_hstrerror \- lightweight resolver error message generation
.SH SYNOPSIS
\fB#include <lwres/netdb.h>
.sp
.na
void
lwres_herror(const char *s);
.ad
.sp
.na
const char *
lwres_hstrerror(int err);
.ad
\fR
.SH "DESCRIPTION"
.PP
\fBlwres_herror()\fR prints the string
\fIs\fR on \fBstderr\fR followed by the string
generated by \fBlwres_hstrerror()\fR for the error code
stored in the global variable lwres_h_errno.
.PP
\fBlwres_hstrerror()\fR returns an appropriate string
for the error code gievn by \fIerr\fR. The values of
the error codes and messages are as follows:
.TP
\fBNETDB_SUCCESS\fR
\fBResolver Error 0 (no error)\fR
.TP
\fBHOST_NOT_FOUND\fR
\fBUnknown host\fR
.TP
\fBTRY_AGAIN\fR
\fBHost name lookup failure\fR
.TP
\fBNO_RECOVERY\fR
\fBUnknown server error\fR
.TP
\fBNO_DATA\fR
\fBNo address associated with name\fR
.SH "RETURN VALUES"
.PP
The string \fBUnknown resolver error\fR is returned by
\fBlwres_hstrerror()\fR
when the value of
lwres_h_errno
is not a valid error code.
.SH "SEE ALSO"
.PP
\fBherror\fR(3),
\fBlwres_hstrerror\fR(3).