text: /*
   * Copyright (c) 1987, 1993
   *    The Regents of the University of California.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 4. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  /*
   * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
   * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
   * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  
  #if defined(LIBC_SCCS) && !defined(lint)
  static const char sccsid[] = "@(#)herror.c	8.1 (Berkeley) 6/4/93";
  static const char rcsid[] = "$Id: herror.c,v 1.4 2005/04/27 04:56:41 sra Exp $";
  #endif /* LIBC_SCCS and not lint */
  #include <sys/cdefs.h>
  __FBSDID("$FreeBSD$");
  
  #include "port_before.h"
  
  #include "namespace.h"
  #include <sys/param.h>
  #include <sys/uio.h>
  
  #include <netinet/in.h>
  #include <arpa/nameser.h>
  
  #include <netdb.h>
  #include <resolv.h>
  #include <string.h>
  #include <unistd.h>
  #include "un-namespace.h"
  
  #include "port_after.h"
  
  const char *h_errlist[] = {
  	"Resolver Error 0 (no error)",
  	"Unknown host",				/*%< 1 HOST_NOT_FOUND */
  	"Host name lookup failure",		/*%< 2 TRY_AGAIN */
  	"Unknown server error",			/*%< 3 NO_RECOVERY */
  	"No address associated with name",	/*%< 4 NO_ADDRESS */
  };
  const int h_nerr = { nitems(h_errlist) };
  
  #undef	h_errno
  int	h_errno;
  
  /*%
   * herror --
   *	print the error indicated by the h_errno value.
   */
  void
  herror(const char *s) {
  	struct iovec iov[4], *v = iov;
  	char *t;
  
  	if (s != NULL && *s != '\0') {
  		DE_CONST(s, t);
  		v->iov_base = t;
  		v->iov_len = strlen(t);
  		v++;
  		DE_CONST(": ", t);
  		v->iov_base = t;
  		v->iov_len = 2;
  		v++;
  	}
  	DE_CONST(hstrerror(*__h_errno()), t);
  	v->iov_base = t;
  	v->iov_len = strlen(v->iov_base);
  	v++;
  	DE_CONST("\n", t);
  	v->iov_base = t;
  	v->iov_len = 1;
  	_writev(STDERR_FILENO, iov, (v - iov) + 1);
  }
  
  /*%
   * hstrerror --
   *	return the string associated with a given "host" errno value.
   */
  const char *
  hstrerror(int err) {
  	if (err < 0)
  		return ("Resolver internal error");
  	else if (err < h_nerr)
  		return (h_errlist[err]);
  	return ("Unknown resolver error");
  }
  
  /*! \file */
  