1 | //error.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2011 |
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5 | * |
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6 | * This file is part of libroar a part of RoarAudio, |
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7 | * a cross-platform sound system for both, home and professional use. |
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8 | * See README for details. |
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9 | * |
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10 | * This file is free software; you can redistribute it and/or modify |
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11 | * it under the terms of the GNU General Public License version 3 |
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12 | * as published by the Free Software Foundation. |
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13 | * |
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14 | * libroar is distributed in the hope that it will be useful, |
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | * GNU General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License |
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20 | * along with this software; see the file COPYING. If not, write to |
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21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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22 | * Boston, MA 02110-1301, USA. |
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23 | * |
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24 | * NOTE for everyone want's to change something and send patches: |
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25 | * read README and HACKING! There a addition information on |
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26 | * the license of this document you need to read before you send |
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27 | * any patches. |
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28 | * |
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29 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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30 | * or libpulse*: |
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31 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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32 | * and are therefore GPL. Because of this it may be illigal to use |
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33 | * them with any software that uses libesd, libartsc or libpulse*. |
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34 | */ |
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35 | |
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36 | #include "libroar.h" |
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37 | |
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38 | // 'no error' value for errno. |
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39 | // zero is true for GNU/Linux. |
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40 | // don't know about other systems. |
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41 | #define CLEAN_ERRNO 0 |
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42 | |
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43 | int roar_errno = ROAR_ERROR_NONE; |
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44 | |
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45 | int roar_err_int(struct roar_error_frame * frame) { |
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46 | if ( frame == NULL ) |
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47 | return -1; |
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48 | |
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49 | memset(frame, 0, sizeof(struct roar_error_frame)); |
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50 | |
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51 | frame->cmd = -1; |
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52 | frame->ra_errno = -1; |
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53 | frame->ra_suberrno = -1; |
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54 | frame->p_errno = -1; |
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55 | |
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56 | return 0; |
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57 | } |
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58 | |
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59 | void * roar_err_buildmsg(struct roar_message * mes, struct roar_error_frame * frame) { |
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60 | int16_t * d; |
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61 | |
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62 | if ( mes == NULL || frame == NULL ) |
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63 | return NULL; |
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64 | |
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65 | memset(mes, 0, sizeof(struct roar_message)); |
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66 | |
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67 | d = (int16_t*)mes->data; |
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68 | |
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69 | mes->datalen = 8 + frame->datalen; |
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70 | frame->data = &(mes->data[8]); |
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71 | |
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72 | mes->data[0] = 0; // version. |
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73 | mes->data[1] = frame->cmd; |
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74 | mes->data[2] = frame->ra_errno; |
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75 | mes->data[3] = frame->ra_suberrno; |
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76 | d[2] = ROAR_HOST2NET16(frame->p_errno); |
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77 | d[3] = ROAR_HOST2NET16(frame->flags); |
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78 | |
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79 | return frame->data; |
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80 | } |
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81 | |
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82 | int roar_err_parsemsg(struct roar_message * mes, struct roar_error_frame * frame) { |
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83 | int16_t * d; |
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84 | |
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85 | if ( mes == NULL || frame == NULL ) |
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86 | return -1; |
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87 | |
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88 | d = (int16_t*)mes->data; |
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89 | |
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90 | if ( mes->datalen < 8 ) |
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91 | return -1; |
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92 | |
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93 | if ( mes->data[0] != 0 ) |
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94 | return -1; |
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95 | |
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96 | frame->cmd = mes->data[1]; |
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97 | frame->ra_errno = mes->data[2]; |
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98 | frame->ra_suberrno = mes->data[3]; |
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99 | frame->p_errno = ROAR_NET2HOST16(d[2]); |
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100 | frame->flags = ROAR_NET2HOST16(d[3]); |
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101 | |
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102 | frame->datalen = mes->datalen - 8; |
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103 | frame->data = &(mes->data[8]); |
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104 | |
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105 | return 0; |
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106 | } |
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107 | |
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108 | int * roar_errno2(void) { |
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109 | return &roar_errno; |
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110 | } |
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111 | |
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112 | void roar_err_clear(void) { |
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113 | *roar_errno2() = ROAR_ERROR_NONE; |
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114 | } |
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115 | |
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116 | void roar_err_clear_errno(void) { |
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117 | errno = CLEAN_ERRNO; |
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118 | } |
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119 | |
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120 | void roar_err_clear_all(void) { |
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121 | roar_err_clear(); |
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122 | roar_err_clear_errno(); |
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123 | } |
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124 | |
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125 | void roar_err_update(void) { |
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126 | int * err = roar_errno2(); |
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127 | |
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128 | // NOTE: _NEVER_ call ROAR_{DBG,INFO,WARN,ERRO}() in here! (will result in endless loop) |
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129 | //printf("*err=%i, errno=%i\n", *err, (int)errno); |
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130 | |
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131 | if ( *err != ROAR_ERROR_NONE ) { |
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132 | roar_err_to_errno(); |
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133 | } else if ( !roar_err_is_errno_clean() ) { |
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134 | roar_err_from_errno(); |
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135 | } |
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136 | } |
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137 | |
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138 | int roar_err_is_errno_clean(void) { |
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139 | return errno == CLEAN_ERRNO ? 1 : 0; |
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140 | } |
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141 | |
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142 | void roar_err_set(const int error) { |
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143 | *roar_errno2() = error; |
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144 | } |
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145 | |
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146 | void roar_err_from_errno(void) { |
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147 | int _roar_errno = ROAR_ERROR_NONE; |
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148 | |
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149 | switch (errno) { |
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150 | #ifdef EACCES |
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151 | case EACCES: _roar_errno = ROAR_ERROR_PERM; break; |
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152 | #endif |
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153 | #ifdef EPERM |
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154 | case EPERM: _roar_errno = ROAR_ERROR_PERM; break; |
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155 | #endif |
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156 | #ifdef ENOENT |
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157 | case ENOENT: _roar_errno = ROAR_ERROR_NOENT; break; |
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158 | #endif |
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159 | #ifdef EBADMSG |
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160 | case EBADMSG: _roar_errno = ROAR_ERROR_BADMSG; break; |
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161 | #endif |
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162 | #ifdef EBUSY |
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163 | case EBUSY: _roar_errno = ROAR_ERROR_BUSY; break; |
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164 | #endif |
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165 | #ifdef ECONNREFUSED |
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166 | case ECONNREFUSED: _roar_errno = ROAR_ERROR_CONNREFUSED; break; |
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167 | #endif |
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168 | #ifdef ENOSYS |
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169 | case ENOSYS: _roar_errno = ROAR_ERROR_NOSYS; break; |
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170 | #endif |
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171 | #ifdef ENOTSUP |
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172 | case ENOTSUP: _roar_errno = ROAR_ERROR_NOTSUP; break; |
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173 | #endif |
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174 | #ifdef EPIPE |
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175 | case EPIPE: _roar_errno = ROAR_ERROR_PIPE; break; |
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176 | #endif |
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177 | #ifdef EPROTO |
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178 | case EPROTO: _roar_errno = ROAR_ERROR_PROTO; break; |
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179 | #endif |
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180 | #ifdef ERANGE |
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181 | case ERANGE: _roar_errno = ROAR_ERROR_RANGE; break; |
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182 | #endif |
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183 | #ifdef EMSGSIZE |
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184 | case EMSGSIZE: _roar_errno = ROAR_ERROR_MSGSIZE; break; |
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185 | #endif |
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186 | #ifdef ENOMEM |
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187 | case ENOMEM: _roar_errno = ROAR_ERROR_NOMEM; break; |
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188 | #endif |
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189 | #ifdef EINVAL |
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190 | case EINVAL: _roar_errno = ROAR_ERROR_INVAL; break; |
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191 | #endif |
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192 | #ifdef EALREADY |
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193 | case EALREADY: _roar_errno = ROAR_ERROR_ALREADY; break; |
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194 | #endif |
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195 | #ifdef EBADRQC |
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196 | case EBADRQC: _roar_errno = ROAR_ERROR_BADRQC; break; |
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197 | #endif |
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198 | #ifdef EDOM |
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199 | case EDOM: _roar_errno = ROAR_ERROR_DOM; break; |
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200 | #endif |
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201 | #ifdef EEXIST |
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202 | case EEXIST: _roar_errno = ROAR_ERROR_EXIST; break; |
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203 | #endif |
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204 | #ifdef EFAULT |
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205 | case EFAULT: _roar_errno = ROAR_ERROR_FAULT; break; |
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206 | #endif |
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207 | #ifdef EIO |
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208 | case EIO: _roar_errno = ROAR_ERROR_IO; break; |
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209 | #endif |
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210 | #ifdef EKEYEXPIRED |
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211 | case EKEYEXPIRED: _roar_errno = ROAR_ERROR_KEYEXPIRED; break; |
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212 | #endif |
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213 | #ifdef EKEYREJECTED |
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214 | case EKEYREJECTED: _roar_errno = ROAR_ERROR_KEYREJECTED; break; |
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215 | #endif |
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216 | #ifdef ELOOP |
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217 | case ELOOP: _roar_errno = ROAR_ERROR_LOOP; break; |
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218 | #endif |
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219 | #ifdef EMFILE |
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220 | case EMFILE: _roar_errno = ROAR_ERROR_MFILE; break; |
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221 | #endif |
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222 | #ifdef ENAMETOOLONG |
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223 | case ENAMETOOLONG: _roar_errno = ROAR_ERROR_NAMETOOLONG; break; |
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224 | #endif |
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225 | #ifdef ENODATA |
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226 | case ENODATA: _roar_errno = ROAR_ERROR_NODATA; break; |
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227 | #endif |
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228 | #ifdef ENODEV |
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229 | case ENODEV: _roar_errno = ROAR_ERROR_NODEV; break; |
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230 | #endif |
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231 | #ifdef ENOSPC |
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232 | case ENOSPC: _roar_errno = ROAR_ERROR_NOSPC; break; |
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233 | #endif |
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234 | #ifdef ENOTCONN |
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235 | case ENOTCONN: _roar_errno = ROAR_ERROR_NOTCONN; break; |
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236 | #endif |
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237 | #ifdef EPROTONOSUPPORT |
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238 | case EPROTONOSUPPORT: _roar_errno = ROAR_ERROR_PROTONOSUP; break; |
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239 | #endif |
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240 | #ifdef EROFS |
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241 | case EROFS: _roar_errno = ROAR_ERROR_RO; break; |
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242 | #endif |
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243 | #ifdef ETIMEDOUT |
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244 | case ETIMEDOUT: _roar_errno = ROAR_ERROR_TIMEDOUT; break; |
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245 | #endif |
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246 | #ifdef EAGAIN |
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247 | case EAGAIN: _roar_errno = ROAR_ERROR_AGAIN; break; |
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248 | #endif |
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249 | #ifdef ENETDOWN |
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250 | case ENETDOWN: _roar_errno = ROAR_ERROR_LINKDOWN; break; |
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251 | #endif |
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252 | default: |
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253 | _roar_errno = ROAR_ERROR_UNKNOWN; |
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254 | break; |
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255 | } |
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256 | |
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257 | roar_err_set(_roar_errno); |
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258 | } |
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259 | |
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260 | void roar_err_to_errno(void) { |
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261 | int * err = roar_errno2(); |
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262 | switch (*err) { |
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263 | case ROAR_ERROR_NONE: |
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264 | roar_err_clear_errno(); |
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265 | break; |
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266 | #ifdef EPERM |
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267 | case ROAR_ERROR_PERM: |
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268 | errno = EPERM; |
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269 | break; |
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270 | #endif |
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271 | #ifdef ENOENT |
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272 | case ROAR_ERROR_NOENT: |
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273 | errno = ENOENT; |
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274 | break; |
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275 | #endif |
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276 | #ifdef EBADMSG |
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277 | case ROAR_ERROR_BADMSG: |
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278 | errno = EBADMSG; |
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279 | break; |
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280 | #endif |
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281 | #ifdef EBUSY |
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282 | case ROAR_ERROR_BUSY: |
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283 | errno = EBUSY; |
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284 | break; |
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285 | #endif |
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286 | #ifdef ECONNREFUSED |
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287 | case ROAR_ERROR_CONNREFUSED: |
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288 | errno = ECONNREFUSED; |
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289 | break; |
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290 | #endif |
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291 | #ifdef ENOSYS |
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292 | case ROAR_ERROR_NOSYS: |
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293 | errno = ENOSYS; |
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294 | break; |
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295 | #endif |
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296 | #ifdef ENOTSUP |
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297 | case ROAR_ERROR_NOTSUP: |
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298 | errno = ENOTSUP; |
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299 | break; |
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300 | #endif |
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301 | #ifdef EPIPE |
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302 | case ROAR_ERROR_PIPE: |
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303 | errno = EPIPE; |
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304 | break; |
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305 | #endif |
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306 | #ifdef EPROTO |
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307 | case ROAR_ERROR_PROTO: |
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308 | errno = EPROTO; |
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309 | break; |
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310 | #endif |
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311 | #ifdef ERANGE |
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312 | case ROAR_ERROR_RANGE: |
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313 | errno = ERANGE; |
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314 | break; |
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315 | #endif |
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316 | #ifdef EMSGSIZE |
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317 | case ROAR_ERROR_MSGSIZE: |
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318 | errno = EMSGSIZE; |
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319 | break; |
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320 | #endif |
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321 | #ifdef ENOMEM |
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322 | case ROAR_ERROR_NOMEM: |
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323 | errno = ENOMEM; |
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324 | break; |
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325 | #endif |
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326 | #ifdef EINVAL |
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327 | case ROAR_ERROR_INVAL: |
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328 | errno = EINVAL; |
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329 | break; |
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330 | #endif |
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331 | #ifdef EALREADY |
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332 | case ROAR_ERROR_ALREADY: |
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333 | errno = EALREADY; |
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334 | break; |
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335 | #endif |
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336 | #ifdef EBADRQC |
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337 | case ROAR_ERROR_BADRQC: |
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338 | errno = EBADRQC; |
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339 | break; |
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340 | #endif |
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341 | #ifdef EDOM |
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342 | case ROAR_ERROR_DOM: |
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343 | errno = EDOM; |
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344 | break; |
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345 | #endif |
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346 | #ifdef EEXIST |
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347 | case ROAR_ERROR_EXIST: |
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348 | errno = EEXIST; |
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349 | break; |
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350 | #endif |
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351 | #ifdef EFAULT |
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352 | case ROAR_ERROR_FAULT: |
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353 | errno = EFAULT; |
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354 | break; |
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355 | #endif |
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356 | #ifdef EIO |
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357 | case ROAR_ERROR_IO: |
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358 | case ROAR_ERROR_RIO: |
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359 | errno = EIO; |
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360 | break; |
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361 | #endif |
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362 | #ifdef EKEYEXPIRED |
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363 | case ROAR_ERROR_KEYEXPIRED: |
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364 | errno = EKEYEXPIRED; |
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365 | break; |
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366 | #endif |
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367 | #ifdef EKEYREJECTED |
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368 | case ROAR_ERROR_KEYREJECTED: |
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369 | errno = EKEYREJECTED; |
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370 | break; |
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371 | #endif |
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372 | #ifdef ELOOP |
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373 | case ROAR_ERROR_LOOP: |
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374 | errno = ELOOP; |
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375 | break; |
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376 | #endif |
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377 | #ifdef EMFILE |
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378 | case ROAR_ERROR_MFILE: |
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379 | errno = EMFILE; |
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380 | break; |
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381 | #endif |
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382 | #ifdef ENAMETOOLONG |
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383 | case ROAR_ERROR_NAMETOOLONG: |
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384 | errno = ENAMETOOLONG; |
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385 | break; |
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386 | #endif |
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387 | #ifdef ENODATA |
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388 | case ROAR_ERROR_NODATA: |
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389 | errno = ENODATA; |
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390 | break; |
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391 | #endif |
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392 | #ifdef ENODEV |
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393 | case ROAR_ERROR_NODEV: |
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394 | case ROAR_ERROR_NODRV: |
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395 | errno = ENODEV; |
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396 | break; |
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397 | #endif |
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398 | #ifdef ENOSPC |
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399 | case ROAR_ERROR_NOSPC: |
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400 | errno = ENOSPC; |
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401 | break; |
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402 | #endif |
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403 | #ifdef EINVAL |
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404 | case ROAR_ERROR_TYPEMM: |
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405 | errno = EINVAL; |
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406 | break; |
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407 | #endif |
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408 | #ifdef ENOSYS |
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409 | case ROAR_ERROR_NORSYS: |
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410 | errno = ENOSYS; |
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411 | break; |
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412 | #endif |
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413 | #ifdef ENOTCONN |
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414 | case ROAR_ERROR_NOTCONN: |
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415 | errno = ENOTCONN; |
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416 | break; |
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417 | #endif |
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418 | #ifdef EPROTONOSUPPORT |
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419 | case ROAR_ERROR_PROTONOSUP: |
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420 | errno = EPROTONOSUPPORT; |
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421 | break; |
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422 | #endif |
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423 | #ifdef EROFS |
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424 | case ROAR_ERROR_RO: |
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425 | errno = EROFS; |
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426 | break; |
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427 | #endif |
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428 | #ifdef ETIMEDOUT |
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429 | case ROAR_ERROR_TIMEDOUT: |
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430 | errno = ETIMEDOUT; |
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431 | break; |
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432 | #endif |
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433 | #ifdef EAGAIN |
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434 | case ROAR_ERROR_AGAIN: |
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435 | errno = EAGAIN; |
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436 | break; |
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437 | #endif |
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438 | #ifdef ENETDOWN |
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439 | case ROAR_ERROR_LINKDOWN: |
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440 | errno = ENETDOWN; |
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441 | break; |
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442 | #endif |
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443 | default: |
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444 | #ifdef EINVAL |
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445 | errno = EINVAL; |
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446 | #else |
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447 | errno = -1; // just guess |
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448 | #endif |
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449 | break; |
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450 | } |
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451 | } |
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452 | |
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453 | |
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454 | const char * roar_error2str(const int error) { |
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455 | const struct { |
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456 | const int err; |
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457 | const char * msg; |
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458 | } msgs[] = { |
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459 | {ROAR_ERROR_NONE, "No error"}, |
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460 | {ROAR_ERROR_PERM, "Operation not permitted"}, |
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461 | {ROAR_ERROR_NOENT, "No such object, file or directory"}, |
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462 | {ROAR_ERROR_BADMSG, "Bad message"}, |
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463 | {ROAR_ERROR_BUSY, "Device or resource busy"}, |
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464 | {ROAR_ERROR_CONNREFUSED, "Connection refused"}, |
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465 | {ROAR_ERROR_NOSYS, "Function not implemented"}, |
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466 | {ROAR_ERROR_NOTSUP, "Operation not supported"}, |
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467 | {ROAR_ERROR_PIPE, "Broken pipe"}, |
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468 | {ROAR_ERROR_PROTO, "Protocol error"}, |
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469 | {ROAR_ERROR_RANGE, "Result too large or parameter out of range"}, |
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470 | {ROAR_ERROR_MSGSIZE, "Message too long"}, |
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471 | {ROAR_ERROR_NOMEM, "Not enough space"}, |
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472 | {ROAR_ERROR_INVAL, "Invalid argument"}, |
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473 | {ROAR_ERROR_ALREADY, "Connection already in progress"}, |
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474 | {ROAR_ERROR_BADRQC, "Invalid request code"}, |
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475 | {ROAR_ERROR_DOM, "Mathematics argument out of domain of function"}, |
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476 | {ROAR_ERROR_EXIST, "File or object exists"}, |
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477 | {ROAR_ERROR_FAULT, "Bad address"}, |
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478 | {ROAR_ERROR_IO, "I/O-Error"}, |
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479 | {ROAR_ERROR_KEYEXPIRED, "Key has expired"}, |
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480 | {ROAR_ERROR_KEYREJECTED, "Key was rejected by service"}, |
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481 | {ROAR_ERROR_LOOP, "Too many recursions"}, |
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482 | {ROAR_ERROR_MFILE, "Too many open files or objects"}, |
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483 | {ROAR_ERROR_NAMETOOLONG, "File or object name too long"}, |
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484 | {ROAR_ERROR_NODATA, "No message is available on the read queue"}, |
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485 | {ROAR_ERROR_NODEV, "No such device"}, |
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486 | {ROAR_ERROR_NODRV, "No such driver"}, |
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487 | {ROAR_ERROR_NOSPC, "No space left on device"}, |
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488 | {ROAR_ERROR_TYPEMM, "Type missmatch. Object of diffrent type required"}, |
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489 | {ROAR_ERROR_NORSYS, "Feature not implemented by remote end"}, |
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490 | {ROAR_ERROR_NOTCONN, "Socket or object not connected"}, |
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491 | {ROAR_ERROR_PROTONOSUP, "Protocol not supported"}, |
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492 | {ROAR_ERROR_RIO, "Remote I/O Error"}, |
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493 | {ROAR_ERROR_RO, "File or object is read only"}, |
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494 | {ROAR_ERROR_TIMEDOUT, "Connection timed out"}, |
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495 | {ROAR_ERROR_AGAIN, "Resource temporarily unavailable"}, |
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496 | {ROAR_ERROR_NOISE, "Line too noisy"}, |
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497 | {ROAR_ERROR_LINKDOWN, "Physical or logical link down"}, |
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498 | {-1, NULL} |
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499 | }; |
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500 | int i; |
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501 | |
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502 | for (i = 0; msgs[i].msg != NULL; i++) |
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503 | if ( msgs[i].err == error ) |
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504 | return msgs[i].msg; |
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505 | |
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506 | return NULL; |
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507 | } |
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508 | |
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509 | //ll |
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