src/api/err.c (LwIP)

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

/** * @file * Error Management module * */ /* * Copyright (c) 2001-2004 Swedish Institute of Computer Science. * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY * OF SUCH DAMAGE. * * This file is part of the lwIP TCP/IP stack. * * Author: Adam Dunkels <adam@sics.se> * */ #include "lwip/err.h" #include "lwip/def.h" #include "lwip/sys.h" #include "lwip/errno.h" #if !NO_SYS /** Table to quickly map an lwIP error (err_t) to a socket error * by using -err as an index */ static const int err_to_errno_table[] = { 0, /* ERR_OK 0 No error, everything OK. */ ENOMEM, /* ERR_MEM -1 Out of memory error. */ ENOBUFS, /* ERR_BUF -2 Buffer error. */ EWOULDBLOCK, /* ERR_TIMEOUT -3 Timeout */ EHOSTUNREACH, /* ERR_RTE -4 Routing problem. */ EINPROGRESS, /* ERR_INPROGRESS -5 Operation in progress */ EINVAL, /* ERR_VAL -6 Illegal value. */ EWOULDBLOCK, /* ERR_WOULDBLOCK -7 Operation would block. */ EADDRINUSE, /* ERR_USE -8 Address in use. */ EALREADY, /* ERR_ALREADY -9 Already connecting. */ EISCONN, /* ERR_ISCONN -10 Conn already established.*/ ENOTCONN, /* ERR_CONN -11 Not connected. */ -1, /* ERR_IF -12 Low-level netif error */ ECONNABORTED, /* ERR_ABRT -13 Connection aborted. */ ECONNRESET, /* ERR_RST -14 Connection reset. */ ENOTCONN, /* ERR_CLSD -15 Connection closed. */ EIO /* ERR_ARG -16 Illegal argument. */ }; int err_to_errno(err_t err) { if ((err > 0) || (-err >= (err_t)LWIP_ARRAYSIZE(err_to_errno_table))) { return EIO; } return err_to_errno_table[-err]; } #endif /* !NO_SYS */ #ifdef LWIP_DEBUG static const char *err_strerr[] = { "Ok.", /* ERR_OK 0 */ "Out of memory error.", /* ERR_MEM -1 */ "Buffer error.", /* ERR_BUF -2 */ "Timeout.", /* ERR_TIMEOUT -3 */ "Routing problem.", /* ERR_RTE -4 */ "Operation in progress.", /* ERR_INPROGRESS -5 */ "Illegal value.", /* ERR_VAL -6 */ "Operation would block.", /* ERR_WOULDBLOCK -7 */ "Address in use.", /* ERR_USE -8 */ "Already connecting.", /* ERR_ALREADY -9 */ "Already connected.", /* ERR_ISCONN -10 */ "Not connected.", /* ERR_CONN -11 */ "Low-level netif error.", /* ERR_IF -12 */ "Connection aborted.", /* ERR_ABRT -13 */ "Connection reset.", /* ERR_RST -14 */ "Connection closed.", /* ERR_CLSD -15 */ "Illegal argument." /* ERR_ARG -16 */ }; /** * Convert an lwip internal error to a string representation. * * @param err an lwip internal err_t * @return a string representation for err */ const char * lwip_strerr(err_t err) { if ((err > 0) || (-err >= (err_t)LWIP_ARRAYSIZE(err_strerr))) { return "Unknown error."; } return err_strerr[-err]; } #endif /* LWIP_DEBUG */