/* $NetBSD: herror.c,v 1.1.1.2 2012/09/09 16:08:10 christos Exp $ */ /* * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 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 "port_before.h" #include #include #include #include #include #include #include #include #include #include #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 */ }; int h_nerr = { sizeof h_errlist / sizeof h_errlist[0] }; #if !(__GLIBC__ > 2 || __GLIBC__ == 2 && __GLIBC_MINOR__ >= 3) #undef h_errno int h_errno; #endif /*% * 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 */