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