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1 //=========================================================================== |
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2 // |
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3 // strerror.cxx |
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4 // |
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5 // ANSI error code string routine |
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6 // |
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7 //=========================================================================== |
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8 //####COPYRIGHTBEGIN#### |
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9 // |
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10 // ------------------------------------------- |
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11 // The contents of this file are subject to the Cygnus eCos Public License |
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12 // Version 1.0 (the "License"); you may not use this file except in |
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13 // compliance with the License. You may obtain a copy of the License at |
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14 // http://sourceware.cygnus.com/ecos |
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15 // |
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16 // Software distributed under the License is distributed on an "AS IS" |
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the |
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18 // License for the specific language governing rights and limitations under |
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19 // the License. |
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20 // |
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21 // The Original Code is eCos - Embedded Cygnus Operating System, released |
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22 // September 30, 1998. |
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23 // |
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24 // The Initial Developer of the Original Code is Cygnus. Portions created |
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25 // by Cygnus are Copyright (C) 1998 Cygnus Solutions. All Rights Reserved. |
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26 // ------------------------------------------- |
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27 // |
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28 //####COPYRIGHTEND#### |
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29 //=========================================================================== |
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30 //#####DESCRIPTIONBEGIN#### |
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31 // |
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32 // Author(s): jlarmour@cygnus.co.uk |
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33 // Contributors: jlarmour@cygnus.co.uk |
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34 // Date: 1998-06-11 |
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35 // Purpose: To provide the strerror() implementation |
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36 // Description: This implements strerror() as described in ANSI chap 7.11.6.2 |
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37 // Usage: See <cyg/error/codes.h> |
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38 // |
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39 //####DESCRIPTIONEND#### |
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40 // |
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41 //=========================================================================== |
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42 |
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43 |
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44 // CONFIGURATION |
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45 |
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46 #include <pkgconf/error.h> // Configuration header |
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47 |
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48 // Include the C library? |
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49 #ifdef CYGPKG_ERROR |
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50 |
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51 // INCLUDES |
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52 |
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53 #include <cyg/infra/cyg_type.h> // Common project-wide type definitions |
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54 #include <cyg/infra/cyg_trac.h> // Tracing support |
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55 #include <cyg/error/codes.h> // Error code definitions and header for this |
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56 // file |
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57 |
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58 // EXPORTED SYMBOLS |
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59 |
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60 externC char * |
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61 strerror( int errnum ) __attribute__ ((weak, alias("_strerror") )); |
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62 |
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63 // FUNCTIONS |
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64 |
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65 externC char * |
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66 _strerror( int errnum ) |
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67 { |
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68 register char *s; |
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69 |
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70 CYG_REPORT_FUNCNAMETYPE( "_strerror", "String form of error is \"%s\"" ); |
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71 |
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72 switch (errnum) |
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73 { |
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74 |
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75 #ifdef ENOERR |
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76 case ENOERR: |
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77 s = "No error"; |
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78 break; |
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79 #endif |
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80 |
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81 #ifdef EPERM |
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82 case EPERM: |
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83 s = "Not permitted"; |
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84 break; |
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85 #endif |
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86 |
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87 #ifdef ENOENT |
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88 case ENOENT: |
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89 s = "No such entity"; |
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90 break; |
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91 #endif |
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92 |
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93 #ifdef ESRCH |
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94 case ESRCH: |
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95 s = "No such process"; |
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96 break; |
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97 #endif |
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98 |
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99 #ifdef EINTR |
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100 case EINTR: |
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101 s = "Operation interrupted"; |
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102 break; |
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103 #endif |
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104 |
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105 #ifdef EIO |
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106 case EIO: |
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107 s = "I/O error"; |
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108 break; |
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109 #endif |
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110 |
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111 #ifdef EBADF |
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112 case EBADF: |
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113 s = "Bad file handle"; |
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114 break; |
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115 #endif |
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116 |
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117 #ifdef EAGAIN |
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118 case EAGAIN: |
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119 s = "Try again later"; |
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120 break; |
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121 #endif |
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122 |
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123 #ifdef ENOMEM |
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124 case ENOMEM: |
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125 s = "Out of memory"; |
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126 break; |
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127 #endif |
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128 |
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129 #ifdef EBUSY |
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130 case EBUSY: |
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131 s = "Resource busy"; |
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132 break; |
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133 #endif |
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134 |
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135 #ifdef ENODEV |
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136 case ENODEV: |
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137 s = "No such device"; |
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138 break; |
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139 #endif |
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140 |
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141 #ifdef EINVAL |
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142 case EINVAL: |
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143 s = "Invalid argument"; |
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144 break; |
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145 #endif |
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146 |
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147 #ifdef EMFILE |
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148 case EMFILE: |
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149 s = "Too many open files"; |
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150 break; |
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151 #endif |
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152 |
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153 #ifdef EDOM |
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154 case EDOM: |
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155 s = "Argument to math function outside valid domain"; |
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156 break; |
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157 #endif |
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158 |
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159 #ifdef ERANGE |
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160 case ERANGE: |
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161 s = "Math result cannot be represented"; |
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162 break; |
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163 #endif |
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164 |
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165 #ifdef ENOSYS |
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166 case ENOSYS: |
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167 s = "Function not implemented"; |
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168 break; |
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169 #endif |
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170 |
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171 #ifdef EEOF |
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172 case EEOF: |
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173 s = "End of file reached"; |
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174 break; |
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175 #endif |
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176 |
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177 #ifdef ENOSUPP |
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178 case ENOSUPP: |
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179 s = "Operation not supported"; |
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180 break; |
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181 #endif |
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182 |
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183 #ifdef EDEVNOSUPP |
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184 case EDEVNOSUPP: |
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185 s = "Device does not support this operation"; |
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186 break; |
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187 #endif |
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188 |
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189 default: |
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190 s = "Unknown error"; |
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191 break; |
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192 |
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193 } // switch |
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194 |
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195 CYG_REPORT_RETVAL(s); |
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196 |
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197 return s; |
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198 } // _strerror() |
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199 |
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200 #endif // ifdef CYGPKG_ERROR |
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201 |
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202 // EOF strerror.cxx |
