1 /* $OpenBSD: gai_strerror.c,v 1.8 2015/09/14 07:38:38 guenther Exp $ */ 2 3 /* 4 * Copyright (c) 1997-1999, Craig Metz, All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Craig Metz and 17 * by other contributors. 18 * 4. Neither the name of the author nor the names of contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* gai_strerror() v1.38 */ 36 37 #include <sys/types.h> 38 #include <netdb.h> 39 #include <errno.h> 40 41 const char * 42 gai_strerror(int errnum) 43 { 44 switch (errnum) { 45 case 0: 46 return "no error"; 47 case EAI_BADFLAGS: 48 return "invalid value for ai_flags"; 49 case EAI_NONAME: 50 return "name or service is not known"; 51 case EAI_AGAIN: 52 return "temporary failure in name resolution"; 53 case EAI_FAIL: 54 return "non-recoverable failure in name resolution"; 55 case EAI_NODATA: 56 return "no address associated with name"; 57 case EAI_FAMILY: 58 return "ai_family not supported"; 59 case EAI_SOCKTYPE: 60 return "ai_socktype not supported"; 61 case EAI_SERVICE: 62 return "service not supported for ai_socktype"; 63 case EAI_ADDRFAMILY: 64 return "address family for name not supported"; 65 case EAI_MEMORY: 66 return "memory allocation failure"; 67 case EAI_SYSTEM: 68 return "system error"; 69 case EAI_BADHINTS: 70 return "invalid value for hints"; 71 case EAI_PROTOCOL: 72 return "resolved protocol is unknown"; 73 case EAI_OVERFLOW: 74 return "argument buffer overflow"; 75 default: 76 return "unknown/invalid error"; 77 } 78 } 79 DEF_WEAK(gai_strerror); 80