BadVPN – Blame information for rev 1
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1 | office | 1 | /** |
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 | |||
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 | |||
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 | |||
43 | #include "lwip/errno.h" |
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44 | |||
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 | |||
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 | |||
78 | #ifdef LWIP_DEBUG |
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79 | |||
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 | |||
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 | |||
115 | #endif /* LWIP_DEBUG */ |