1 /** 2 * @file 3 * Error Management module 4 * 5 */ 6 7 /* 8 * Copyright (c) 2001-2004 Swedish Institute of Computer Science. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without modification, 12 * are permitted provided that the following conditions are met: 13 * 14 * 1. Redistributions of source code must retain the above copyright notice, 15 * this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright notice, 17 * this list of conditions and the following disclaimer in the documentation 18 * and/or other materials provided with the distribution. 19 * 3. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 31 * OF SUCH DAMAGE. 32 * 33 * This file is part of the lwIP TCP/IP stack. 34 * 35 * Author: Adam Dunkels <adam@sics.se> 36 * 37 */ 38 39 #include "lwip/err.h" 40 #include "lwip/def.h" 41 #include "lwip/sys.h" 42 43 #include "lwip/errno.h" 44 45 #if !NO_SYS 46 /** Table to quickly map an lwIP error (err_t) to a socket error 47 * by using -err as an index */ 48 static const int err_to_errno_table[] = { 49 0, /* ERR_OK 0 No error, everything OK. */ 50 ENOMEM, /* ERR_MEM -1 Out of memory error. */ 51 ENOBUFS, /* ERR_BUF -2 Buffer error. */ 52 EWOULDBLOCK, /* ERR_TIMEOUT -3 Timeout */ 53 EHOSTUNREACH, /* ERR_RTE -4 Routing problem. */ 54 EINPROGRESS, /* ERR_INPROGRESS -5 Operation in progress */ 55 EINVAL, /* ERR_VAL -6 Illegal value. */ 56 EWOULDBLOCK, /* ERR_WOULDBLOCK -7 Operation would block. */ 57 EADDRINUSE, /* ERR_USE -8 Address in use. */ 58 EALREADY, /* ERR_ALREADY -9 Already connecting. */ 59 EISCONN, /* ERR_ISCONN -10 Conn already established.*/ 60 ENOTCONN, /* ERR_CONN -11 Not connected. */ 61 -1, /* ERR_IF -12 Low-level netif error */ 62 ECONNABORTED, /* ERR_ABRT -13 Connection aborted. */ 63 ECONNRESET, /* ERR_RST -14 Connection reset. */ 64 ENOTCONN, /* ERR_CLSD -15 Connection closed. */ 65 EIO /* ERR_ARG -16 Illegal argument. */ 66 }; 67 68 int 69 err_to_errno(err_t err) 70 { 71 if ((err > 0) || (-err >= (err_t)LWIP_ARRAYSIZE(err_to_errno_table))) { 72 return EIO; 73 } 74 return err_to_errno_table[-err]; 75 } 76 #endif /* !NO_SYS */ 77 78 #ifdef LWIP_DEBUG 79 80 static const char *err_strerr[] = { 81 "Ok.", /* ERR_OK 0 */ 82 "Out of memory error.", /* ERR_MEM -1 */ 83 "Buffer error.", /* ERR_BUF -2 */ 84 "Timeout.", /* ERR_TIMEOUT -3 */ 85 "Routing problem.", /* ERR_RTE -4 */ 86 "Operation in progress.", /* ERR_INPROGRESS -5 */ 87 "Illegal value.", /* ERR_VAL -6 */ 88 "Operation would block.", /* ERR_WOULDBLOCK -7 */ 89 "Address in use.", /* ERR_USE -8 */ 90 "Already connecting.", /* ERR_ALREADY -9 */ 91 "Already connected.", /* ERR_ISCONN -10 */ 92 "Not connected.", /* ERR_CONN -11 */ 93 "Low-level netif error.", /* ERR_IF -12 */ 94 "Connection aborted.", /* ERR_ABRT -13 */ 95 "Connection reset.", /* ERR_RST -14 */ 96 "Connection closed.", /* ERR_CLSD -15 */ 97 "Illegal argument." /* ERR_ARG -16 */ 98 }; 99 100 /** 101 * Convert an lwip internal error to a string representation. 102 * 103 * @param err an lwip internal err_t 104 * @return a string representation for err 105 */ 106 const char * 107 lwip_strerr(err_t err) 108 { 109 if ((err > 0) || (-err >= (err_t)LWIP_ARRAYSIZE(err_strerr))) { 110 return "Unknown error."; 111 } 112 return err_strerr[-err]; 113 } 114 115 #endif /* LWIP_DEBUG */ 116