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265
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1 /* strerror.c --- POSIX compatible system error routine
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2
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3 Copyright (C) 2007-2009 Free Software Foundation, Inc.
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4
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5 This program is free software: you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 3 of the License, or
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8 (at your option) any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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17
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18 #include <config.h>
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19
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20 #include <string.h>
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21
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22 #if REPLACE_STRERROR
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23
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24 # include <errno.h>
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25 # include <stdio.h>
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26
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27 # if GNULIB_defined_ESOCK /* native Windows platforms */
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28 # if HAVE_WINSOCK2_H
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29 # include <winsock2.h>
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30 # endif
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31 # endif
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32
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33 # include "intprops.h"
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34
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35 # undef strerror
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36 # if ! HAVE_DECL_STRERROR
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37 # define strerror(n) NULL
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38 # endif
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39
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40 char *
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41 rpl_strerror (int n)
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42 {
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43 char const *msg = NULL;
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44 /* These error messages are taken from glibc/sysdeps/gnu/errlist.c. */
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45 switch (n)
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46 {
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47 # if GNULIB_defined_ETXTBSY
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48 case ETXTBSY:
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49 msg = "Text file busy";
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50 break;
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51 # endif
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52
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53 # if GNULIB_defined_ESOCK /* native Windows platforms */
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54 /* EWOULDBLOCK is the same as EAGAIN. */
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55 case EINPROGRESS:
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56 msg = "Operation now in progress";
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57 break;
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58 case EALREADY:
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59 msg = "Operation already in progress";
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60 break;
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61 case ENOTSOCK:
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62 msg = "Socket operation on non-socket";
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63 break;
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64 case EDESTADDRREQ:
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65 msg = "Destination address required";
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66 break;
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67 case EMSGSIZE:
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68 msg = "Message too long";
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69 break;
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70 case EPROTOTYPE:
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71 msg = "Protocol wrong type for socket";
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72 break;
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73 case ENOPROTOOPT:
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74 msg = "Protocol not available";
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75 break;
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76 case EPROTONOSUPPORT:
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77 msg = "Protocol not supported";
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78 break;
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79 case ESOCKTNOSUPPORT:
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80 msg = "Socket type not supported";
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81 break;
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82 case EOPNOTSUPP:
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83 msg = "Operation not supported";
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84 break;
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85 case EPFNOSUPPORT:
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86 msg = "Protocol family not supported";
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87 break;
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88 case EAFNOSUPPORT:
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89 msg = "Address family not supported by protocol";
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90 break;
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91 case EADDRINUSE:
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92 msg = "Address already in use";
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93 break;
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94 case EADDRNOTAVAIL:
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95 msg = "Cannot assign requested address";
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96 break;
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97 case ENETDOWN:
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98 msg = "Network is down";
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99 break;
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100 case ENETUNREACH:
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101 msg = "Network is unreachable";
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102 break;
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103 case ENETRESET:
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104 msg = "Network dropped connection on reset";
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105 break;
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106 case ECONNABORTED:
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107 msg = "Software caused connection abort";
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108 break;
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109 case ECONNRESET:
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110 msg = "Connection reset by peer";
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111 break;
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112 case ENOBUFS:
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113 msg = "No buffer space available";
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114 break;
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115 case EISCONN:
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116 msg = "Transport endpoint is already connected";
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117 break;
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118 case ENOTCONN:
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119 msg = "Transport endpoint is not connected";
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120 break;
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121 case ESHUTDOWN:
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122 msg = "Cannot send after transport endpoint shutdown";
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123 break;
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124 case ETOOMANYREFS:
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125 msg = "Too many references: cannot splice";
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126 break;
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127 case ETIMEDOUT:
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128 msg = "Connection timed out";
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129 break;
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130 case ECONNREFUSED:
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131 msg = "Connection refused";
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132 break;
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133 case ELOOP:
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134 msg = "Too many levels of symbolic links";
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135 break;
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136 case EHOSTDOWN:
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137 msg = "Host is down";
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138 break;
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139 case EHOSTUNREACH:
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140 msg = "No route to host";
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141 break;
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142 case EPROCLIM:
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143 msg = "Too many processes";
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144 break;
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145 case EUSERS:
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146 msg = "Too many users";
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147 break;
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148 case EDQUOT:
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149 msg = "Disk quota exceeded";
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150 break;
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151 case ESTALE:
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152 msg = "Stale NFS file handle";
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153 break;
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154 case EREMOTE:
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155 msg = "Object is remote";
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156 break;
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157 # if HAVE_WINSOCK2_H
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158 /* WSA_INVALID_HANDLE maps to EBADF */
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159 /* WSA_NOT_ENOUGH_MEMORY maps to ENOMEM */
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160 /* WSA_INVALID_PARAMETER maps to EINVAL */
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161 case WSA_OPERATION_ABORTED:
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162 msg = "Overlapped operation aborted";
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163 break;
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164 case WSA_IO_INCOMPLETE:
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165 msg = "Overlapped I/O event object not in signaled state";
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166 break;
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167 case WSA_IO_PENDING:
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168 msg = "Overlapped operations will complete later";
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169 break;
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170 /* WSAEINTR maps to EINTR */
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171 /* WSAEBADF maps to EBADF */
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172 /* WSAEACCES maps to EACCES */
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173 /* WSAEFAULT maps to EFAULT */
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174 /* WSAEINVAL maps to EINVAL */
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175 /* WSAEMFILE maps to EMFILE */
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176 /* WSAEWOULDBLOCK maps to EWOULDBLOCK */
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177 /* WSAEINPROGRESS is EINPROGRESS */
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178 /* WSAEALREADY is EALREADY */
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179 /* WSAENOTSOCK is ENOTSOCK */
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180 /* WSAEDESTADDRREQ is EDESTADDRREQ */
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181 /* WSAEMSGSIZE is EMSGSIZE */
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182 /* WSAEPROTOTYPE is EPROTOTYPE */
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183 /* WSAENOPROTOOPT is ENOPROTOOPT */
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184 /* WSAEPROTONOSUPPORT is EPROTONOSUPPORT */
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185 /* WSAESOCKTNOSUPPORT is ESOCKTNOSUPPORT */
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186 /* WSAEOPNOTSUPP is EOPNOTSUPP */
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187 /* WSAEPFNOSUPPORT is EPFNOSUPPORT */
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188 /* WSAEAFNOSUPPORT is EAFNOSUPPORT */
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189 /* WSAEADDRINUSE is EADDRINUSE */
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190 /* WSAEADDRNOTAVAIL is EADDRNOTAVAIL */
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191 /* WSAENETDOWN is ENETDOWN */
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192 /* WSAENETUNREACH is ENETUNREACH */
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193 /* WSAENETRESET is ENETRESET */
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194 /* WSAECONNABORTED is ECONNABORTED */
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195 /* WSAECONNRESET is ECONNRESET */
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196 /* WSAENOBUFS is ENOBUFS */
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197 /* WSAEISCONN is EISCONN */
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198 /* WSAENOTCONN is ENOTCONN */
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199 /* WSAESHUTDOWN is ESHUTDOWN */
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200 /* WSAETOOMANYREFS is ETOOMANYREFS */
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201 /* WSAETIMEDOUT is ETIMEDOUT */
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202 /* WSAECONNREFUSED is ECONNREFUSED */
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203 /* WSAELOOP is ELOOP */
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204 /* WSAENAMETOOLONG maps to ENAMETOOLONG */
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205 /* WSAEHOSTDOWN is EHOSTDOWN */
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206 /* WSAEHOSTUNREACH is EHOSTUNREACH */
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207 /* WSAENOTEMPTY maps to ENOTEMPTY */
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208 /* WSAEPROCLIM is EPROCLIM */
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209 /* WSAEUSERS is EUSERS */
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210 /* WSAEDQUOT is EDQUOT */
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211 /* WSAESTALE is ESTALE */
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212 /* WSAEREMOTE is EREMOTE */
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213 case WSASYSNOTREADY:
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214 msg = "Network subsystem is unavailable";
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215 break;
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216 case WSAVERNOTSUPPORTED:
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217 msg = "Winsock.dll version out of range";
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218 break;
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219 case WSANOTINITIALISED:
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220 msg = "Successful WSAStartup not yet performed";
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221 break;
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222 case WSAEDISCON:
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223 msg = "Graceful shutdown in progress";
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224 break;
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225 case WSAENOMORE: case WSA_E_NO_MORE:
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226 msg = "No more results";
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227 break;
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228 case WSAECANCELLED: case WSA_E_CANCELLED:
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229 msg = "Call was canceled";
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230 break;
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231 case WSAEINVALIDPROCTABLE:
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232 msg = "Procedure call table is invalid";
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233 break;
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234 case WSAEINVALIDPROVIDER:
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235 msg = "Service provider is invalid";
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236 break;
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237 case WSAEPROVIDERFAILEDINIT:
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238 msg = "Service provider failed to initialize";
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239 break;
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240 case WSASYSCALLFAILURE:
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241 msg = "System call failure";
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242 break;
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243 case WSASERVICE_NOT_FOUND:
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244 msg = "Service not found";
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245 break;
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246 case WSATYPE_NOT_FOUND:
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247 msg = "Class type not found";
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248 break;
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249 case WSAEREFUSED:
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250 msg = "Database query was refused";
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251 break;
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252 case WSAHOST_NOT_FOUND:
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253 msg = "Host not found";
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254 break;
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255 case WSATRY_AGAIN:
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256 msg = "Nonauthoritative host not found";
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257 break;
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258 case WSANO_RECOVERY:
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259 msg = "Nonrecoverable error";
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260 break;
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261 case WSANO_DATA:
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262 msg = "Valid name, no data record of requested type";
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263 break;
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264 /* WSA_QOS_* omitted */
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265 # endif
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266 # endif
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267
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268 # if GNULIB_defined_ENOMSG
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269 case ENOMSG:
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270 msg = "No message of desired type";
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271 break;
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272 # endif
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273
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274 # if GNULIB_defined_EIDRM
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275 case EIDRM:
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276 msg = "Identifier removed";
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277 break;
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278 # endif
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279
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280 # if GNULIB_defined_ENOLINK
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281 case ENOLINK:
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282 msg = "Link has been severed";
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283 break;
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284 # endif
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285
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286 # if GNULIB_defined_EPROTO
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287 case EPROTO:
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288 msg = "Protocol error";
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289 break;
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290 # endif
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291
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292 # if GNULIB_defined_EMULTIHOP
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293 case EMULTIHOP:
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294 msg = "Multihop attempted";
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295 break;
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296 # endif
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297
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298 # if GNULIB_defined_EBADMSG
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299 case EBADMSG:
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300 msg = "Bad message";
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301 break;
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302 # endif
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303
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304 # if GNULIB_defined_EOVERFLOW
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305 case EOVERFLOW:
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306 msg = "Value too large for defined data type";
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307 break;
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308 # endif
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309
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310 # if GNULIB_defined_ENOTSUP
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311 case ENOTSUP:
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312 msg = "Not supported";
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313 break;
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314 # endif
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315
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316 # if GNULIB_defined_
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317 case ECANCELED:
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318 msg = "Operation canceled";
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319 break;
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320 # endif
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321 }
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322
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323 if (msg)
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324 return (char *) msg;
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325
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326 {
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327 char *result = strerror (n);
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328
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329 if (result == NULL || result[0] == '\0')
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330 {
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331 static char const fmt[] = "Unknown error (%d)";
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332 static char msg_buf[sizeof fmt + INT_STRLEN_BOUND (n)];
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333 sprintf (msg_buf, fmt, n);
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334 return msg_buf;
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335 }
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336
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337 return result;
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338 }
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339 }
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340
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341 #endif
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