1 /* $NetBSD: errno2result.c,v 1.1 2024/02/18 20:57:56 christos Exp $ */ 2 3 /* 4 * Copyright (C) Internet Systems Consortium, Inc. ("ISC") 5 * 6 * SPDX-License-Identifier: MPL-2.0 7 * 8 * This Source Code Form is subject to the terms of the Mozilla Public 9 * License, v. 2.0. If a copy of the MPL was not distributed with this 10 * file, you can obtain one at https://mozilla.org/MPL/2.0/. 11 * 12 * See the COPYRIGHT file distributed with this work for additional 13 * information regarding copyright ownership. 14 */ 15 16 /*! \file */ 17 18 #include "errno2result.h" 19 #include <stdbool.h> 20 21 #include <isc/platform.h> 22 #include <isc/result.h> 23 #include <isc/strerr.h> 24 #include <isc/string.h> 25 #include <isc/util.h> 26 27 /*% 28 * Convert a POSIX errno value into an isc_result_t. The 29 * list of supported errno values is not complete; new users 30 * of this function should add any expected errors that are 31 * not already there. 32 */ 33 isc_result_t 34 isc___errno2result(int posixerrno, bool dolog, const char *file, 35 unsigned int line) { 36 char strbuf[ISC_STRERRORSIZE]; 37 38 switch (posixerrno) { 39 case ENOTDIR: 40 case ELOOP: 41 case EINVAL: /* XXX sometimes this is not for files */ 42 case ENAMETOOLONG: 43 case EBADF: 44 return (ISC_R_INVALIDFILE); 45 case ENOENT: 46 return (ISC_R_FILENOTFOUND); 47 case EACCES: 48 case EPERM: 49 return (ISC_R_NOPERM); 50 case EEXIST: 51 return (ISC_R_FILEEXISTS); 52 case EIO: 53 return (ISC_R_IOERROR); 54 case ENOMEM: 55 return (ISC_R_NOMEMORY); 56 case ENFILE: 57 case EMFILE: 58 return (ISC_R_TOOMANYOPENFILES); 59 #ifdef EDQUOT 60 case EDQUOT: 61 return (ISC_R_DISCQUOTA); 62 #endif /* ifdef EDQUOT */ 63 case ENOSPC: 64 return (ISC_R_DISCFULL); 65 #ifdef EOVERFLOW 66 case EOVERFLOW: 67 return (ISC_R_RANGE); 68 #endif /* ifdef EOVERFLOW */ 69 case EPIPE: 70 #ifdef ECONNRESET 71 case ECONNRESET: 72 #endif /* ifdef ECONNRESET */ 73 #ifdef ECONNABORTED 74 case ECONNABORTED: 75 #endif /* ifdef ECONNABORTED */ 76 return (ISC_R_CONNECTIONRESET); 77 #ifdef ENOTCONN 78 case ENOTCONN: 79 return (ISC_R_NOTCONNECTED); 80 #endif /* ifdef ENOTCONN */ 81 #ifdef ETIMEDOUT 82 case ETIMEDOUT: 83 return (ISC_R_TIMEDOUT); 84 #endif /* ifdef ETIMEDOUT */ 85 #ifdef ENOBUFS 86 case ENOBUFS: 87 return (ISC_R_NORESOURCES); 88 #endif /* ifdef ENOBUFS */ 89 #ifdef EAFNOSUPPORT 90 case EAFNOSUPPORT: 91 return (ISC_R_FAMILYNOSUPPORT); 92 #endif /* ifdef EAFNOSUPPORT */ 93 #ifdef ENETDOWN 94 case ENETDOWN: 95 return (ISC_R_NETDOWN); 96 #endif /* ifdef ENETDOWN */ 97 #ifdef EHOSTDOWN 98 case EHOSTDOWN: 99 return (ISC_R_HOSTDOWN); 100 #endif /* ifdef EHOSTDOWN */ 101 #ifdef ENETUNREACH 102 case ENETUNREACH: 103 return (ISC_R_NETUNREACH); 104 #endif /* ifdef ENETUNREACH */ 105 #ifdef EHOSTUNREACH 106 case EHOSTUNREACH: 107 return (ISC_R_HOSTUNREACH); 108 #endif /* ifdef EHOSTUNREACH */ 109 #ifdef EADDRINUSE 110 case EADDRINUSE: 111 return (ISC_R_ADDRINUSE); 112 #endif /* ifdef EADDRINUSE */ 113 case EADDRNOTAVAIL: 114 return (ISC_R_ADDRNOTAVAIL); 115 case ECONNREFUSED: 116 return (ISC_R_CONNREFUSED); 117 default: 118 if (dolog) { 119 strerror_r(posixerrno, strbuf, sizeof(strbuf)); 120 UNEXPECTED_ERROR(file, line, 121 "unable to convert errno " 122 "to isc_result: %d: %s", 123 posixerrno, strbuf); 124 } 125 /* 126 * XXXDCL would be nice if perhaps this function could 127 * return the system's error string, so the caller 128 * might have something more descriptive than "unexpected 129 * error" to log with. 130 */ 131 return (ISC_R_UNEXPECTED); 132 } 133 } 134