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