1 | //roardl.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2012 |
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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 | #ifdef ROAR_HAVE_H_DIRENT |
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39 | #include <dirent.h> |
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40 | #endif |
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41 | |
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42 | #if defined(ROAR_HAVE_LIBDL) && !defined(RTLD_NEXT) |
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43 | #define RTLD_NEXT ((void *) -1L) |
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44 | #endif |
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45 | |
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46 | struct roar_dl_lhandle { |
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47 | size_t refc; // currently unused. |
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48 | int flags; |
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49 | char * libname; // only used for ROAR_DL_FLAG_STATIC. |
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50 | struct roar_dl_librarypara * para; |
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51 | struct roar_dl_libraryinst * lib; |
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52 | struct { |
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53 | struct roar_error_state error_state; |
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54 | void * global_data; |
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55 | void * global_data_state; |
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56 | struct roar_notify_core * notifycore; |
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57 | } context; |
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58 | int ra_inited; |
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59 | #if defined(ROAR_HAVE_LIBDL) |
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60 | void * handle; |
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61 | #endif |
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62 | }; |
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63 | |
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64 | |
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65 | struct roar_dl_librarypara * roar_dl_para_new(const char * args, void * binargv, |
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66 | const char * appname, const char * abiversion) { |
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67 | struct roar_dl_librarypara * ret = roar_mm_malloc(sizeof(struct roar_dl_librarypara)); |
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68 | ssize_t argc; |
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69 | int err; |
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70 | |
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71 | if ( ret == NULL ) |
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72 | return NULL; |
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73 | |
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74 | memset(ret, 0, sizeof(struct roar_dl_librarypara)); |
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75 | |
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76 | ret->version = ROAR_DL_LIBPARA_VERSION; |
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77 | ret->len = sizeof(struct roar_dl_librarypara); |
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78 | ret->refc = 1; |
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79 | ret->argc = 0; |
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80 | ret->argv = NULL; |
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81 | ret->args_store = NULL; |
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82 | ret->binargv = binargv; |
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83 | ret->appname = appname; |
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84 | ret->abiversion = abiversion; |
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85 | |
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86 | if ( args != NULL ) { |
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87 | ret->args_store = roar_mm_strdup(args); |
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88 | if ( ret->args_store == NULL ) { |
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89 | err = roar_error; |
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90 | roar_mm_free(ret); |
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91 | roar_error = err; |
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92 | return NULL; |
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93 | } |
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94 | |
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95 | argc = roar_keyval_split(&(ret->argv), ret->args_store, NULL, NULL, 0); |
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96 | if ( argc == -1 ) { |
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97 | err = roar_error; |
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98 | roar_mm_free(ret->args_store); |
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99 | roar_mm_free(ret); |
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100 | roar_error = err; |
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101 | return NULL; |
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102 | } |
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103 | |
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104 | ret->argc = argc; |
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105 | } |
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106 | |
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107 | return ret; |
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108 | } |
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109 | |
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110 | int roar_dl_para_ref (struct roar_dl_librarypara * para) { |
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111 | if ( para == NULL ) { |
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112 | ROAR_DBG("roar_dl_para_ref(para=%p) = -1 // error=FAULT", para); |
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113 | roar_err_set(ROAR_ERROR_FAULT); |
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114 | return -1; |
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115 | } |
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116 | |
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117 | para->refc++; |
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118 | |
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119 | ROAR_DBG("roar_dl_para_ref(para=%p) = 0", para); |
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120 | return 0; |
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121 | } |
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122 | |
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123 | int roar_dl_para_unref (struct roar_dl_librarypara * para) { |
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124 | if ( para == NULL ) { |
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125 | ROAR_DBG("roar_dl_para_unref(para=%p) = -1 // error=FAULT", para); |
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126 | roar_err_set(ROAR_ERROR_FAULT); |
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127 | return -1; |
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128 | } |
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129 | |
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130 | para->refc--; |
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131 | |
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132 | if ( para->refc ) { |
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133 | ROAR_DBG("roar_dl_para_unref(para=%p) = 0", para); |
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134 | return 0; |
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135 | } |
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136 | |
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137 | if ( para->notifycore != NULL ) |
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138 | roar_notify_core_unref(para->notifycore); |
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139 | |
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140 | if ( para->args_store != NULL ) { |
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141 | roar_mm_free(para->args_store); |
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142 | roar_mm_free(para->argv); |
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143 | } |
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144 | |
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145 | roar_mm_free(para); |
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146 | |
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147 | ROAR_DBG("roar_dl_para_unref(para=%p) = 0", para); |
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148 | return 0; |
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149 | } |
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150 | int roar_dl_para_check_version (struct roar_dl_librarypara * para, |
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151 | const char * appname, const char * abiversion) { |
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152 | if ( para == NULL ) { |
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153 | roar_err_set(ROAR_ERROR_FAULT); |
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154 | return -1; |
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155 | } |
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156 | |
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157 | // check if both appnames are NULL or non-NULL. |
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158 | if ( (para->appname == NULL && appname != NULL) || (para->appname != NULL && appname == NULL) ) { |
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159 | roar_err_set(ROAR_ERROR_BADHOST); |
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160 | return -1; |
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161 | } |
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162 | |
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163 | // check if the appname matches if given. |
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164 | if ( para->appname != NULL && !!strcmp(para->appname, appname) ) { |
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165 | roar_err_set(ROAR_ERROR_BADHOST); |
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166 | return -1; |
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167 | } |
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168 | |
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169 | // check if both ABI versions are NULL or non-NULL. |
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170 | if ( (para->abiversion == NULL && abiversion != NULL) || (para->abiversion != NULL && abiversion == NULL) ) { |
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171 | roar_err_set(ROAR_ERROR_BADVERSION); |
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172 | return -1; |
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173 | } |
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174 | |
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175 | // check if the ABI versions matches if given. |
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176 | if ( para->abiversion != NULL && !!strcmp(para->abiversion, abiversion) ) { |
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177 | roar_err_set(ROAR_ERROR_BADVERSION); |
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178 | return -1; |
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179 | } |
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180 | |
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181 | return 0; |
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182 | } |
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183 | |
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184 | |
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185 | #if defined(ROAR_HAVE_LIBDL) |
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186 | static void * _roardl2ldl (struct roar_dl_lhandle * lhandle) { |
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187 | ROAR_DBG("_roardl2ldl(lhandle=%p) = ?", lhandle); |
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188 | |
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189 | if ( lhandle == ROAR_DL_HANDLE_DEFAULT ) { |
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190 | ROAR_DBG("_roardl2ldl(lhandle=%p) = %p", lhandle, (void*)RTLD_DEFAULT); |
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191 | return RTLD_DEFAULT; |
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192 | } |
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193 | |
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194 | if ( lhandle == ROAR_DL_HANDLE_NEXT ) { |
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195 | ROAR_DBG("_roardl2ldl(lhandle=%p) = %p", lhandle, (void*)RTLD_NEXT); |
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196 | return RTLD_NEXT; |
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197 | } |
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198 | |
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199 | ROAR_DBG("_roardl2ldl(lhandle=%p) = %p", lhandle, (void*)(lhandle->handle)); |
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200 | return lhandle->handle; |
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201 | } |
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202 | #endif |
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203 | |
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204 | #ifdef ROAR_HAVE_H_DIRENT |
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205 | // pvn = prefix, host vendor, host name |
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206 | static struct roar_dl_lhandle * _load_from_path_pvn(const char * name, |
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207 | int flags, int ra_init, |
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208 | struct roar_dl_librarypara * para, |
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209 | const char * prefix, |
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210 | const char * hostvendor, |
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211 | const char * hostname) { |
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212 | struct roar_dl_lhandle * ret = NULL; |
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213 | int i, j; |
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214 | char path[1024]; |
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215 | const char * path_format[] = {"%s/%s/%s", "%s/%s/universal", "%s/universal/universal"}; |
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216 | DIR * dir; |
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217 | struct dirent * dirent; |
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218 | char file[1024]; |
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219 | const char * file_format[] = {"%s/%s/%s", "%s/%s/%s" ROAR_SHARED_SUFFIX, "%s/%s/lib%s" ROAR_SHARED_SUFFIX}; |
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220 | // cont->handle[idx] = roar_dl_open(name, ROAR_DL_FLAG_DEFAULTS, 1, para); |
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221 | //#vars: $PREFIX_PLUGINS, $hostvendor, $hostname, $name |
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222 | //#search order: $PREFIX_PLUGINS/{$hostvendor/{$hostname,universal},universal/universal}/*/{,lib}$name.so |
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223 | |
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224 | for (i = 0; i < 3; i++) { |
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225 | snprintf(path, sizeof(path), path_format[i], prefix, hostvendor, hostname); |
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226 | dir = opendir(path); |
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227 | if ( dir == NULL ) |
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228 | continue; |
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229 | |
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230 | while ((dirent = readdir(dir)) != NULL) { |
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231 | if ( !strcmp(dirent->d_name, ".") || !strcmp(dirent->d_name, "..") ) |
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232 | continue; |
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233 | |
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234 | for (j = 0; j < 3; j++) { |
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235 | snprintf(file, sizeof(file), file_format[j], path, dirent->d_name, name); |
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236 | ret = roar_dl_open(file, flags, ra_init, para); |
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237 | if ( ret != NULL ) { |
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238 | closedir(dir); |
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239 | return ret; |
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240 | } |
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241 | } |
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242 | } |
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243 | |
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244 | closedir(dir); |
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245 | } |
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246 | |
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247 | return NULL; |
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248 | } |
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249 | |
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250 | static struct roar_dl_lhandle * _load_from_path(const char * name, int flags, int ra_init, |
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251 | struct roar_dl_librarypara * para) { |
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252 | struct roar_dl_lhandle * ret = NULL; |
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253 | char * host = NULL; |
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254 | char * hostvendor_buffer = NULL; |
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255 | char * hostvendor = NULL; |
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256 | char * hostname = NULL; |
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257 | char * c, * d; |
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258 | |
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259 | if ( para != NULL && para->appname != NULL && para->appname[0] != 0 ) { |
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260 | host = roar_mm_strdup(para->appname); |
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261 | |
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262 | // if we are out of memory we will likely not pass the rest, so just return in error. |
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263 | if ( host == NULL ) |
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264 | return NULL; |
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265 | |
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266 | hostname = host; |
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267 | c = strstr(host, "<"); |
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268 | if ( c != NULL ) { |
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269 | while (c[-1] == ' ') c--; |
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270 | *c = 0; |
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271 | c++; |
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272 | while (*c == ' ' || *c == '<') c++; |
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273 | if ( *c ) { |
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274 | d = strstr(c, ">"); |
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275 | if ( d != NULL ) |
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276 | *d = 0; |
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277 | |
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278 | d = strstr(c, "/"); |
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279 | if ( d != NULL ) { |
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280 | *d = '-'; |
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281 | hostvendor = c; |
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282 | } else { |
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283 | hostvendor_buffer = roar_mm_malloc(roar_mm_strlen(c) + 1 /* tailing \0 */ + 6 /* "unreg-" */); |
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284 | |
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285 | // see above |
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286 | if ( hostvendor_buffer == NULL ) { |
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287 | roar_mm_free(host); |
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288 | return NULL; |
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289 | } |
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290 | |
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291 | strcpy(hostvendor_buffer, "unreg-"); |
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292 | strcat(hostvendor_buffer, c); |
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293 | hostvendor = hostvendor_buffer; |
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294 | } |
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295 | } |
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296 | } |
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297 | } |
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298 | |
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299 | if ( hostvendor == NULL ) |
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300 | hostvendor = "universal"; |
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301 | |
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302 | if ( hostname == NULL ) |
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303 | hostname = "universal"; |
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304 | |
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305 | ret = _load_from_path_pvn(name, flags, ra_init, para, ROAR_PREFIX_PLUGINS, hostvendor, hostname); |
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306 | |
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307 | if ( host != NULL ) |
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308 | roar_mm_free(host); |
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309 | if ( hostvendor_buffer != NULL ) |
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310 | roar_mm_free(hostvendor_buffer); |
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311 | return ret; |
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312 | } |
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313 | #endif |
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314 | |
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315 | static struct roar_dl_lhandle * _roar_dl_open_pluginpath(const char * filename, int flags, |
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316 | int ra_init, struct roar_dl_librarypara * para) { |
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317 | flags |= ROAR_DL_FLAG_PLUGINPATH; |
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318 | flags -= ROAR_DL_FLAG_PLUGINPATH; |
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319 | |
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320 | #ifdef ROAR_HAVE_H_DIRENT |
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321 | // do normal open for everything with a path name. |
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322 | if ( strstr(filename, "/") != NULL ) |
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323 | return roar_dl_open(filename, flags, ra_init, para); |
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324 | |
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325 | return _load_from_path(filename, flags, ra_init, para); |
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326 | #else |
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327 | // fall back to system open function. |
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328 | return roar_dl_open(filename, flags, ra_init, para); |
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329 | #endif |
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330 | } |
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331 | |
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332 | struct roar_dl_lhandle * roar_dl_open(const char * filename, int flags, |
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333 | int ra_init, struct roar_dl_librarypara * para) { |
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334 | struct roar_dl_lhandle * ret = NULL; |
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335 | #if defined(ROAR_HAVE_LIBDL) |
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336 | #ifdef RTLD_DEEPBIND |
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337 | int libdl_flags = RTLD_DEEPBIND; |
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338 | #else |
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339 | int libdl_flags = 0; |
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340 | #endif |
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341 | #endif |
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342 | int err; |
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343 | |
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344 | switch (flags) { |
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345 | case ROAR_DL_FLAG_DEFAULTS: flags = ROAR_DL_FLAG_NONE; break; |
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346 | case ROAR_DL_FLAG_PLUGIN: flags = ROAR_DL_FLAG_PLUGINPATH; break; |
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347 | } |
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348 | |
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349 | if ( flags & ROAR_DL_FLAG_PLUGINPATH ) |
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350 | return _roar_dl_open_pluginpath(filename, flags, ra_init, para); |
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351 | |
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352 | #if defined(ROAR_HAVE_LIBDL) |
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353 | if ( flags & ROAR_DL_FLAG_LAZY ) { |
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354 | libdl_flags |= RTLD_LAZY; |
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355 | } else { |
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356 | libdl_flags |= RTLD_NOW; |
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357 | } |
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358 | #endif |
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359 | |
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360 | if ( (ret = roar_mm_malloc(sizeof(struct roar_dl_lhandle))) == NULL ) |
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361 | return NULL; |
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362 | |
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363 | memset(ret, 0, sizeof(struct roar_dl_lhandle)); |
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364 | |
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365 | roar_err_initstore(&(ret->context.error_state)); |
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366 | |
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367 | ret->flags = flags; |
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368 | ret->refc = 1; |
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369 | |
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370 | if ( flags & ROAR_DL_FLAG_STATIC ) { |
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371 | if ( filename == NULL ) { |
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372 | ret->libname = NULL; |
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373 | } else { |
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374 | ret->libname = roar_mm_strdup(filename); |
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375 | } |
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376 | } else { |
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377 | #if defined(ROAR_HAVE_LIBDL) |
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378 | ret->handle = dlopen(filename, libdl_flags); |
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379 | |
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380 | if ( ret->handle == NULL ) { |
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381 | ROAR_DBG("roar_dl_open(filename='%s', flags=%i, ra_init=%i, para=%p): Can not load library: %s", filename, flags, ra_init, para, roar_dl_errstr(ret)); |
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382 | roar_mm_free(ret); |
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383 | return NULL; |
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384 | } |
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385 | #else |
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386 | roar_mm_free(ret); |
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387 | roar_err_set(ROAR_ERROR_NOSYS); |
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388 | return NULL; |
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389 | #endif |
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390 | } |
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391 | |
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392 | ret->para = para; |
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393 | |
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394 | if ( ra_init ) { |
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395 | if ( roar_dl_ra_init(ret, NULL, para) == -1 ) { |
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396 | err = roar_error; |
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397 | ROAR_WARN("roar_dl_open(filename='%s', flags=%i, ra_init=%i, para=%p): Can not init RA lib: %s", filename, flags, ra_init, para, roar_error2str(err)); |
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398 | #if defined(ROAR_HAVE_LIBDL) |
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399 | if ( ret->handle != NULL ) |
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400 | dlclose(ret->handle); |
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401 | #endif |
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402 | roar_mm_free(ret); |
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403 | roar_error = err; |
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404 | return NULL; |
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405 | } |
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406 | } |
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407 | |
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408 | if ( para != NULL ) |
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409 | roar_dl_para_ref(para); |
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410 | |
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411 | return ret; |
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412 | } |
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413 | |
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414 | int roar_dl_ref (struct roar_dl_lhandle * lhandle) { |
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415 | if ( (void*)lhandle < (void*)128 ) { |
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416 | ROAR_DBG("roar_dl_ref(lhandle=%p) = -1 // error=BADFH", lhandle); |
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417 | roar_err_set(ROAR_ERROR_BADFH); |
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418 | return -1; |
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419 | } |
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420 | |
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421 | lhandle->refc++; |
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422 | |
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423 | ROAR_DBG("roar_dl_ref(lhandle=%p) = 0", lhandle); |
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424 | return 0; |
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425 | } |
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426 | |
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427 | int roar_dl_unref (struct roar_dl_lhandle * lhandle) { |
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428 | int ret = -1; |
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429 | |
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430 | if ( (void*)lhandle < (void*)128 ) { |
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431 | ROAR_DBG("roar_dl_unref(lhandle=%p) = -1 // error=BADFH", lhandle); |
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432 | roar_err_set(ROAR_ERROR_BADFH); |
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433 | return -1; |
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434 | } |
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435 | |
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436 | lhandle->refc--; |
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437 | |
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438 | if ( lhandle->refc ) { |
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439 | ROAR_DBG("roar_dl_unref(lhandle=%p) = 0", lhandle); |
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440 | return 0; |
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441 | } |
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442 | |
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443 | if ( lhandle->lib != NULL && lhandle->lib->unload != NULL ) { |
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444 | roar_dl_context_restore(lhandle); |
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445 | lhandle->lib->unload(lhandle->para, lhandle->lib); |
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446 | roar_dl_context_store(lhandle); |
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447 | } |
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448 | |
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449 | #if defined(ROAR_HAVE_LIBDL) |
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450 | if ( lhandle->handle == NULL ) { |
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451 | ret = 0; |
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452 | } else { |
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453 | ret = dlclose(_roardl2ldl(lhandle)); |
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454 | } |
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455 | #else |
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456 | ret = -1; |
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457 | #endif |
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458 | |
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459 | if ( lhandle->context.global_data != NULL ) |
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460 | roar_mm_free(lhandle->context.global_data); |
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461 | |
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462 | if ( lhandle->para != NULL ) |
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463 | roar_dl_para_unref(lhandle->para); |
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464 | |
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465 | if ( lhandle->libname != NULL ) |
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466 | roar_mm_free(lhandle->libname); |
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467 | |
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468 | roar_mm_free(lhandle); |
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469 | |
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470 | ROAR_DBG("roar_dl_unref(lhandle=%p) = %i", lhandle, ret); |
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471 | return ret; |
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472 | } |
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473 | |
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474 | void * roar_dl_getsym(struct roar_dl_lhandle * lhandle, const char * sym, int type) { |
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475 | #if defined(ROAR_HAVE_LIBDL) |
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476 | void * ret = dlsym(_roardl2ldl(lhandle), sym); |
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477 | |
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478 | (void)type; |
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479 | |
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480 | ROAR_DBG("roar_dl_getsym(lhandle=%p, sym='%s', type=%i): errno=%s, dlerror()='%s'", lhandle, sym, type, ret, strerror(errno), dlerror()); |
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481 | ROAR_DBG("roar_dl_getsym(lhandle=%p, sym='%s', type=%i) = %p", lhandle, sym, type, ret); |
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482 | |
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483 | return ret; |
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484 | #else |
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485 | ROAR_DBG("roar_dl_getsym(lhandle=%p, sym='%s', type=%i) = NULL // errno=NOSYS", lhandle, sym, type, ret); |
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486 | roar_err_set(ROAR_ERROR_NOSYS); |
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487 | return NULL; |
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488 | #endif |
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489 | } |
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490 | |
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491 | int roar_dl_ra_init(struct roar_dl_lhandle * lhandle, |
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492 | const char * prefix, |
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493 | struct roar_dl_librarypara * para) { |
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494 | #define _SUFFIX "_roaraudio_library_init" |
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495 | char name[80] = _SUFFIX; |
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496 | struct roar_dl_libraryinst * (*func)(struct roar_dl_librarypara * para); |
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497 | struct roar_dl_libraryinst * lib; |
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498 | struct roar_dl_lhandle * getsymhandle = lhandle; |
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499 | void * global_data_state = NULL; |
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500 | int i; |
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501 | |
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502 | if ( (void*)lhandle < (void*)128 ) { |
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503 | if ( prefix == NULL ) |
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504 | return -1; |
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505 | } else { |
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506 | if ( lhandle->ra_inited ) |
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507 | return 0; |
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508 | |
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509 | if ( prefix == NULL ) |
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510 | prefix = lhandle->libname; |
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511 | |
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512 | if ( para == NULL ) |
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513 | para = lhandle->para; |
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514 | |
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515 | if ( lhandle->flags & ROAR_DL_FLAG_STATIC ) |
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516 | getsymhandle = ROAR_DL_HANDLE_DEFAULT; |
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517 | } |
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518 | |
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519 | |
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520 | if ( prefix != NULL ) { |
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521 | roar_mm_strscpy(name, "_"); |
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522 | roar_mm_strscat(name, prefix); |
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523 | roar_mm_strscat(name, _SUFFIX); |
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524 | } |
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525 | |
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526 | ROAR_DBG("roar_dl_ra_init(lhandle=%p, prefix='%s'): name='%s'", lhandle, prefix, name); |
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527 | |
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528 | if ( (func = roar_dl_getsym(getsymhandle, name, -1)) == NULL ) { |
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529 | ROAR_DBG("roar_dl_ra_init(lhandle=%p, prefix='%s') = -1", lhandle, prefix); |
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530 | return -1; |
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531 | } |
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532 | |
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533 | ROAR_DBG("roar_dl_ra_init(lhandle=%p, prefix='%s'): func=%p", lhandle, prefix, func); |
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534 | |
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535 | lib = func(para); |
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536 | |
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537 | if ( lib == NULL ) |
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538 | return -1; |
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539 | |
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540 | if ( lib->version != ROAR_DL_LIBINST_VERSION ) |
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541 | return -1; |
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542 | |
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543 | if ( sizeof(struct roar_dl_libraryinst) > lib->len ) |
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544 | return -1; |
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545 | |
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546 | if ( lib->host_appname != NULL || lib->host_abiversion != NULL ) { |
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547 | // check for correct host. |
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548 | if ( para == NULL ) { |
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549 | roar_err_set(ROAR_ERROR_INVAL); |
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550 | return -1; |
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551 | } |
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552 | if ( roar_dl_para_check_version(para, lib->host_appname, lib->host_abiversion) == -1 ) |
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553 | return -1; |
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554 | } |
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555 | |
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556 | if ( (lib->libdep == NULL && lib->libdep_len) || (lib->libdep != NULL && !lib->libdep_len) ) { |
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557 | roar_err_set(ROAR_ERROR_BADLIB); |
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558 | return -1; |
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559 | } |
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560 | |
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561 | if ( lib->libdep != NULL && lib->libdep_len ) { |
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562 | // dynamic loader infos are currently not supported. |
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563 | roar_err_set(ROAR_ERROR_NOTSUP); |
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564 | return -1; |
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565 | } |
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566 | |
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567 | if ( !((void*)lhandle < (void*)128) ) { |
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568 | lhandle->lib = lib; |
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569 | |
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570 | if ( lib->global_data_len ) { |
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571 | lhandle->context.global_data = roar_mm_malloc(lib->global_data_len); |
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572 | if ( lhandle->context.global_data == NULL ) |
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573 | return -1; |
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574 | |
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575 | if ( lib->global_data_init == NULL ) { |
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576 | memset(lhandle->context.global_data, 0, lib->global_data_len); |
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577 | } else { |
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578 | memcpy(lhandle->context.global_data, lib->global_data_init, lib->global_data_len); |
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579 | } |
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580 | } |
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581 | } |
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582 | |
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583 | if ( lib->global_data_pointer != NULL ) { |
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584 | global_data_state = *(lib->global_data_pointer); |
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585 | if ( (void*)lhandle < (void*)128 ) { |
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586 | *(lib->global_data_pointer) = lib->global_data_init; |
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587 | } else { |
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588 | *(lib->global_data_pointer) = lhandle->context.global_data; |
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589 | } |
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590 | } |
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591 | |
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592 | for (i = 0; i < ROAR_DL_FN_MAX; i++) { |
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593 | if ( lib->func[i] != NULL ) |
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594 | lib->func[i](para, lib); |
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595 | } |
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596 | |
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597 | if ( lib->global_data_pointer != NULL ) { |
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598 | if ( !((void*)lhandle < (void*)128) ) { |
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599 | *(lib->global_data_pointer) = global_data_state; |
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600 | } |
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601 | } |
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602 | |
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603 | if ( !((void*)lhandle < (void*)128) ) |
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604 | lhandle->ra_inited = 1; |
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605 | |
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606 | return 0; |
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607 | } |
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608 | |
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609 | const char * roar_dl_errstr(struct roar_dl_lhandle * lhandle) { |
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610 | #if defined(ROAR_HAVE_LIBDL) |
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611 | (void)lhandle; |
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612 | return dlerror(); |
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613 | #else |
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614 | return NULL; |
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615 | #endif |
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616 | } |
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617 | |
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618 | struct roar_dl_librarypara * roar_dl_getpara(struct roar_dl_lhandle * lhandle) { |
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619 | if ( (void*)lhandle < (void*)128 ) { |
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620 | roar_err_set(ROAR_ERROR_NOTSUP); |
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621 | return NULL; |
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622 | } |
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623 | |
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624 | if ( lhandle->para == NULL ) { |
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625 | roar_err_set(ROAR_ERROR_NOENT); |
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626 | return NULL; |
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627 | } |
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628 | |
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629 | if ( roar_dl_para_ref(lhandle->para) == -1 ) |
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630 | return NULL; |
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631 | |
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632 | return lhandle->para; |
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633 | } |
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634 | |
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635 | const struct roar_dl_libraryname * roar_dl_getlibname(struct roar_dl_lhandle * lhandle) { |
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636 | if ( (void*)lhandle < (void*)128 ) { |
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637 | roar_err_set(ROAR_ERROR_NOTSUP); |
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638 | return NULL; |
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639 | } |
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640 | |
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641 | if ( lhandle->lib == NULL ) { |
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642 | roar_err_set(ROAR_ERROR_BADLIB); |
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643 | return NULL; |
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644 | } |
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645 | |
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646 | if ( lhandle->lib->libname == NULL ) { |
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647 | roar_err_set(ROAR_ERROR_NOENT); |
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648 | return NULL; |
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649 | } |
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650 | |
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651 | if ( lhandle->lib->libname->version != ROAR_DL_LIBNAME_VERSION ) { |
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652 | roar_err_set(ROAR_ERROR_BADVERSION); |
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653 | return NULL; |
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654 | } |
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655 | |
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656 | if ( lhandle->lib->libname->len != sizeof(struct roar_dl_libraryname) ) { |
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657 | roar_err_set(ROAR_ERROR_HOLE); |
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658 | return NULL; |
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659 | } |
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660 | |
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661 | return lhandle->lib->libname; |
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662 | } |
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663 | |
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664 | int roar_dl_context_restore(struct roar_dl_lhandle * lhandle) { |
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665 | struct roar_error_state error_state; |
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666 | |
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667 | ROAR_DBG("roar_dl_context_restore(lhandle=%p) = ?", lhandle); |
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668 | |
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669 | if ( (void*)lhandle < (void*)128 ) { |
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670 | ROAR_DBG("roar_dl_context_restore(lhandle=%p) = -1 // errno=NOTSUP", lhandle); |
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671 | roar_err_set(ROAR_ERROR_NOTSUP); |
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672 | return -1; |
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673 | } |
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674 | |
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675 | roar_err_store(&error_state); |
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676 | roar_err_restore(&(lhandle->context.error_state)); |
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677 | lhandle->context.error_state = error_state; |
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678 | |
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679 | if ( lhandle->lib->global_data_pointer != NULL ) { |
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680 | ROAR_DBG("roar_dl_context_restore(lhandle=%p): gptr(%p): %p -> %p", lhandle, |
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681 | lhandle->lib->global_data_pointer, *(lhandle->lib->global_data_pointer), lhandle->context.global_data); |
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682 | lhandle->context.global_data_state = *(lhandle->lib->global_data_pointer); |
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683 | *(lhandle->lib->global_data_pointer) = lhandle->context.global_data; |
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684 | } |
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685 | |
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686 | if ( lhandle->para->notifycore != NULL ) |
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687 | lhandle->context.notifycore = roar_notify_core_swap_global(lhandle->para->notifycore); |
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688 | |
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689 | ROAR_DBG("roar_dl_context_restore(lhandle=%p) = 0", lhandle); |
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690 | return 0; |
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691 | } |
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692 | |
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693 | int roar_dl_context_store(struct roar_dl_lhandle * lhandle) { |
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694 | struct roar_error_state error_state; |
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695 | |
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696 | ROAR_DBG("roar_dl_context_store(lhandle=%p) = ?", lhandle); |
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697 | |
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698 | if ( (void*)lhandle < (void*)128 ) { |
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699 | ROAR_DBG("roar_dl_context_store(lhandle=%p) = -1 // errno=NOTSUP", lhandle); |
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700 | roar_err_set(ROAR_ERROR_NOTSUP); |
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701 | return -1; |
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702 | } |
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703 | |
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704 | if ( lhandle->para->notifycore != NULL ) { |
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705 | roar_notify_core_unref(roar_notify_core_swap_global(lhandle->context.notifycore)); |
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706 | roar_notify_core_unref(lhandle->context.notifycore); |
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707 | lhandle->context.notifycore = NULL; |
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708 | } |
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709 | |
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710 | if ( lhandle->lib->global_data_pointer != NULL ) { |
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711 | ROAR_DBG("roar_dl_context_store(lhandle=%p): gptr(%p): %p -> %p", lhandle, |
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712 | lhandle->lib->global_data_pointer, *(lhandle->lib->global_data_pointer), lhandle->context.global_data_state); |
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713 | *(lhandle->lib->global_data_pointer) = lhandle->context.global_data_state; |
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714 | } |
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715 | |
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716 | roar_err_store(&error_state); |
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717 | roar_err_restore(&(lhandle->context.error_state)); |
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718 | lhandle->context.error_state = error_state; |
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719 | |
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720 | ROAR_DBG("roar_dl_context_store(lhandle=%p) = 0", lhandle); |
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721 | return 0; |
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722 | } |
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723 | |
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724 | int roar_dl_appsched_trigger(struct roar_dl_lhandle * lhandle, enum roar_dl_appsched_trigger trigger) { |
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725 | int (*func) (struct roar_dl_librarypara * para) = NULL; |
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726 | int ret; |
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727 | |
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728 | if ( (void*)lhandle < (void*)128 ) { |
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729 | roar_err_set(ROAR_ERROR_NOTSUP); |
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730 | return -1; |
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731 | } |
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732 | |
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733 | if ( lhandle->lib == NULL ) { |
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734 | roar_err_set(ROAR_ERROR_TYPEMM); |
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735 | return -1; |
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736 | } |
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737 | |
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738 | if ( lhandle->lib->appsched == NULL ) { |
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739 | roar_err_set(ROAR_ERROR_NOENT); |
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740 | return -1; |
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741 | } |
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742 | |
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743 | switch (trigger) { |
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744 | #define _trig(lname,uname) \ |
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745 | case ROAR_DL_APPSCHED_ ## uname : \ |
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746 | func = lhandle->lib->appsched->lname; \ |
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747 | break; |
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748 | _trig(init, INIT); |
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749 | _trig(free, FREE); |
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750 | _trig(update, UPDATE); |
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751 | _trig(tick, TICK); |
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752 | _trig(wait, WAIT); |
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753 | // use ifndef here so warnings of unhandled enum values will be shown in DEBUG mode. |
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754 | #ifndef DEBUG |
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755 | default: |
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756 | roar_err_set(ROAR_ERROR_BADRQC); |
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757 | return -1; |
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758 | break; |
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759 | #endif |
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760 | } |
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761 | |
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762 | if ( func == NULL ) { |
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763 | roar_err_set(ROAR_ERROR_NOENT); |
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764 | return -1; |
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765 | } |
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766 | |
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767 | roar_dl_context_restore(lhandle); |
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768 | ret = func(lhandle->para); |
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769 | roar_dl_context_store(lhandle); |
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770 | return ret; |
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771 | } |
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772 | |
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773 | //ll |
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