1 /* $OpenBSD: gai_strerror.c,v 1.4 1999/12/30 08:54:20 itojun Exp $ */ 2 3 /* 4 * %%% copyright-cmetz-97-bsd 5 * Copyright (c) 1997-1999, Craig Metz, All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Craig Metz and 18 * by other contributors. 19 * 4. Neither the name of the author nor the names of contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 /* gai_strerror() v1.38 */ 37 38 #include <sys/types.h> 39 #include <netdb.h> 40 #include <errno.h> 41 42 char * 43 gai_strerror(int errnum) 44 { 45 switch (errnum) { 46 case 0: 47 return "no error"; 48 case EAI_BADFLAGS: 49 return "invalid value for ai_flags"; 50 case EAI_NONAME: 51 return "name or service is not known"; 52 case EAI_AGAIN: 53 return "temporary failure in name resolution"; 54 case EAI_FAIL: 55 return "non-recoverable failure in name resolution"; 56 case EAI_NODATA: 57 return "no address associated with name"; 58 case EAI_FAMILY: 59 return "ai_family not supported"; 60 case EAI_SOCKTYPE: 61 return "ai_socktype not supported"; 62 case EAI_SERVICE: 63 return "service not supported for ai_socktype"; 64 case EAI_ADDRFAMILY: 65 return "address family for name not supported"; 66 case EAI_MEMORY: 67 return "memory allocation failure"; 68 case EAI_SYSTEM: 69 return "system error"; 70 case EAI_BADHINTS: 71 return "invalid value for hints"; 72 case EAI_PROTOCOL: 73 return "resolved protocol is unknown"; 74 default: 75 return "unknown/invalid error"; 76 } 77 } 78