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Rev | Author | Line No. | Line |
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1159 | hidnplayr | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2004-2008. All rights reserved. ;; |
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4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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7 | |||
1206 | hidnplayr | 8 | $Revision: 1206 $ |
1159 | hidnplayr | 9 | |
10 | |||
11 | image_of_eax EQU esp+36 |
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12 | image_of_ebx EQU esp+24 |
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13 | |||
14 | ; System function 70 - files with long names (LFN) |
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15 | ; diamond, 2006 |
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16 | |||
17 | iglobal |
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18 | ; in this table names must be in lowercase |
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19 | rootdirs: |
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20 | db 2,'rd' |
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21 | dd fs_OnRamdisk |
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22 | dd fs_NextRamdisk |
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23 | db 7,'ramdisk' |
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24 | dd fs_OnRamdisk |
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25 | dd fs_NextRamdisk |
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26 | db 2,'fd' |
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27 | dd fs_OnFloppy |
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28 | dd fs_NextFloppy |
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29 | db 10,'floppydisk' |
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30 | dd fs_OnFloppy |
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31 | dd fs_NextFloppy |
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32 | db 3,'hd0' |
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33 | dd fs_OnHd0 |
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34 | dd fs_NextHd0 |
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35 | db 3,'hd1' |
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36 | dd fs_OnHd1 |
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37 | dd fs_NextHd1 |
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38 | db 3,'hd2' |
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39 | dd fs_OnHd2 |
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40 | dd fs_NextHd2 |
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41 | db 3,'hd3' |
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42 | dd fs_OnHd3 |
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43 | dd fs_NextHd3 |
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44 | ;********************************************** |
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45 | db 3,'cd0' |
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46 | dd fs_OnCd0 |
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47 | dd fs_NextCd |
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48 | db 3,'cd1' |
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49 | dd fs_OnCd1 |
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50 | dd fs_NextCd |
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51 | db 3,'cd2' |
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52 | dd fs_OnCd2 |
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53 | dd fs_NextCd |
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54 | db 3,'cd3' |
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55 | dd fs_OnCd3 |
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56 | dd fs_NextCd |
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57 | ;*********************************************** |
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58 | db 0 |
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59 | |||
60 | |||
61 | virtual_root_query: |
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62 | dd fs_HasRamdisk |
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63 | db 'rd',0 |
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64 | dd fs_HasFloppy |
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65 | db 'fd',0 |
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66 | dd fs_HasHd0 |
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67 | db 'hd0',0 |
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68 | dd fs_HasHd1 |
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69 | db 'hd1',0 |
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70 | dd fs_HasHd2 |
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71 | db 'hd2',0 |
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72 | dd fs_HasHd3 |
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73 | db 'hd3',0 |
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74 | ;********************************************** |
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75 | dd fs_HasCd0 |
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76 | db 'cd0',0 |
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77 | dd fs_HasCd1 |
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78 | db 'cd1',0 |
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79 | dd fs_HasCd2 |
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80 | db 'cd2',0 |
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81 | dd fs_HasCd3 |
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82 | db 'cd3',0 |
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83 | ;********************************************** |
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84 | dd 0 |
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85 | |||
86 | fs_additional_handlers: |
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87 | dd biosdisk_handler, biosdisk_enum_root |
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88 | ; add new handlers here |
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89 | dd 0 |
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90 | |||
91 | endg |
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92 | |||
93 | file_system_lfn: |
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94 | ; in: eax->fileinfo block |
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95 | ; operation codes: |
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96 | ; 0 : read file |
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97 | ; 1 : read folder |
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98 | ; 2 : create/rewrite file |
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99 | ; 3 : write/append to file |
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100 | ; 4 : set end of file |
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101 | ; 5 : get file/directory attributes structure |
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102 | ; 6 : set file/directory attributes structure |
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103 | ; 7 : start application |
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104 | ; 8 : delete file |
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105 | ; 9 : create directory |
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106 | |||
107 | ; parse file name |
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108 | xchg ebx, eax |
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109 | lea esi, [ebx+20] |
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110 | lodsb |
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111 | test al, al |
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112 | jnz @f |
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113 | mov esi, [esi] |
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114 | lodsb |
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115 | @@: |
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116 | cmp al, '/' |
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117 | jz .notcurdir |
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118 | dec esi |
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119 | mov ebp, esi |
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120 | test al, al |
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121 | jnz @f |
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122 | xor ebp, ebp |
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123 | @@: |
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124 | mov esi, [current_slot] |
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125 | mov esi, [esi+APPDATA.cur_dir] |
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126 | jmp .parse_normal |
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127 | .notcurdir: |
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128 | cmp byte [esi], 0 |
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129 | jz .rootdir |
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130 | call process_replace_file_name |
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131 | .parse_normal: |
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132 | cmp dword [ebx], 7 |
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133 | jne @F |
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134 | mov edx, [ebx+4] |
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135 | mov ebx, [ebx+8] |
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136 | call fs_execute ; esi+ebp, ebx, edx |
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137 | mov [image_of_eax], eax |
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138 | ret |
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139 | @@: |
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140 | mov edi, rootdirs-8 |
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141 | xor ecx, ecx |
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142 | push esi |
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143 | .scan1: |
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144 | pop esi |
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145 | add edi, ecx |
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146 | scasd |
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147 | scasd |
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148 | mov cl, byte [edi] |
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149 | test cl, cl |
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150 | jz .notfound_try |
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151 | inc edi |
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152 | push esi |
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153 | @@: |
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154 | lodsb |
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155 | or al, 20h |
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156 | scasb |
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157 | loopz @b |
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158 | jnz .scan1 |
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159 | lodsb |
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160 | cmp al, '/' |
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161 | jz .found1 |
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162 | test al, al |
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163 | jnz .scan1 |
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164 | pop eax |
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165 | ; directory /xxx |
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166 | .maindir: |
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167 | mov esi, [edi+4] |
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168 | .maindir_noesi: |
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169 | cmp dword [ebx], 1 |
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170 | jnz .access_denied |
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171 | xor eax, eax |
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172 | mov ebp, [ebx+12] |
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173 | mov edx, [ebx+16] |
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174 | ; add edx, std_application_base_address |
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175 | push dword [ebx+4] ; first block |
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176 | mov ebx, [ebx+8] ; flags |
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177 | ; ebx=flags, [esp]=first block, ebp=number of blocks, edx=return area, esi='Next' handler |
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178 | mov edi, edx |
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179 | push ecx |
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180 | mov ecx, 32/4 |
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181 | rep stosd |
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182 | pop ecx |
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183 | mov byte [edx], 1 ; version |
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184 | .maindir_loop: |
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185 | call esi |
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186 | jc .maindir_done |
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187 | inc dword [edx+8] |
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188 | dec dword [esp] |
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189 | jns .maindir_loop |
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190 | dec ebp |
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191 | js .maindir_loop |
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192 | inc dword [edx+4] |
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193 | mov dword [edi], 0x10 ; attributes: folder |
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194 | mov dword [edi+4], 1 ; name type: UNICODE |
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195 | push eax |
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196 | xor eax, eax |
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197 | add edi, 8 |
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198 | push ecx |
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199 | mov ecx, 40/4-2 |
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200 | rep stosd |
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201 | pop ecx |
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202 | pop eax |
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203 | push eax edx |
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204 | ; convert number in eax to decimal UNICODE string |
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205 | push edi |
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206 | push ecx |
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207 | push -'0' |
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208 | mov ecx, 10 |
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209 | @@: |
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210 | xor edx, edx |
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211 | div ecx |
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212 | push edx |
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213 | test eax, eax |
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214 | jnz @b |
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215 | @@: |
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216 | pop eax |
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217 | add al, '0' |
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218 | stosb |
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219 | test bl, 1 ; UNICODE name? |
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220 | jz .ansi2 |
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221 | mov byte [edi], 0 |
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222 | inc edi |
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223 | .ansi2: |
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224 | test al, al |
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225 | jnz @b |
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226 | mov byte [edi-1], 0 |
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227 | pop ecx |
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228 | pop edi |
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229 | ; UNICODE name length is 520 bytes, ANSI - 264 |
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230 | add edi, 520 |
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231 | test bl, 1 |
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232 | jnz @f |
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233 | sub edi, 520-264 |
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234 | @@: |
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235 | pop edx eax |
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236 | jmp .maindir_loop |
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237 | .maindir_done: |
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238 | pop eax |
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239 | mov ebx, [edx+4] |
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240 | xor eax, eax |
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241 | dec ebp |
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242 | js @f |
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243 | mov al, ERROR_END_OF_FILE |
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244 | @@: |
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245 | mov [image_of_eax], eax |
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246 | mov [image_of_ebx], ebx |
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247 | ret |
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248 | ; directory / |
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249 | .rootdir: |
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250 | cmp dword [ebx], 1 ; read folder? |
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251 | jz .readroot |
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252 | .access_denied: |
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253 | mov dword [image_of_eax], 10 ; access denied |
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254 | ret |
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255 | |||
256 | .readroot: |
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257 | ; virtual root folder - special handler |
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258 | mov esi, virtual_root_query |
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259 | mov ebp, [ebx+12] |
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260 | mov edx, [ebx+16] |
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261 | ; add edx, std_application_base_address |
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262 | push dword [ebx+4] ; first block |
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263 | mov ebx, [ebx+8] ; flags |
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264 | xor eax, eax |
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265 | ; eax=0, [esp]=first block, ebx=flags, ebp=number of blocks, edx=return area |
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266 | mov edi, edx |
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267 | mov ecx, 32/4 |
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268 | rep stosd |
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269 | mov byte [edx], 1 ; version |
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270 | .readroot_loop: |
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271 | cmp dword [esi], eax |
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272 | jz .readroot_done_static |
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273 | call dword [esi] |
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274 | add esi, 4 |
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275 | test eax, eax |
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276 | jnz @f |
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277 | .readroot_next: |
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278 | or ecx, -1 |
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279 | xchg esi, edi |
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280 | repnz scasb |
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281 | xchg esi, edi |
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282 | jmp .readroot_loop |
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283 | @@: |
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284 | xor eax, eax |
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285 | inc dword [edx+8] |
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286 | dec dword [esp] |
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287 | jns .readroot_next |
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288 | dec ebp |
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289 | js .readroot_next |
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290 | inc dword [edx+4] |
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291 | mov dword [edi], 0x10 ; attributes: folder |
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292 | mov dword [edi+4], ebx ; name type: UNICODE |
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293 | add edi, 8 |
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294 | mov ecx, 40/4-2 |
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295 | rep stosd |
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296 | push edi |
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297 | @@: |
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298 | lodsb |
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299 | stosb |
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300 | test bl, 1 |
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301 | jz .ansi |
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302 | mov byte [edi], 0 |
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303 | inc edi |
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304 | .ansi: |
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305 | test eax, eax |
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306 | jnz @b |
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307 | pop edi |
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308 | add edi, 520 |
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309 | test bl, 1 |
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310 | jnz .readroot_loop |
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311 | sub edi, 520-264 |
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312 | jmp .readroot_loop |
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313 | .readroot_done_static: |
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314 | mov esi, fs_additional_handlers-8 |
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315 | sub esp, 16 |
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316 | .readroot_ah_loop: |
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317 | add esi, 8 |
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318 | cmp dword [esi], 0 |
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319 | jz .readroot_done |
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320 | xor eax, eax |
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321 | .readroot_ah_loop2: |
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322 | push edi |
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323 | lea edi, [esp+4] |
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324 | call dword [esi+4] |
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325 | pop edi |
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326 | test eax, eax |
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327 | jz .readroot_ah_loop |
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328 | inc dword [edx+8] |
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329 | dec dword [esp+16] |
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330 | jns .readroot_ah_loop2 |
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331 | dec ebp |
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332 | js .readroot_ah_loop2 |
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333 | push eax |
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334 | xor eax, eax |
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335 | inc dword [edx+4] |
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336 | mov dword [edi], 0x10 ; attributes: folder |
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337 | mov dword [edi+4], ebx |
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338 | add edi, 8 |
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339 | mov ecx, 40/4-2 |
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340 | rep stosd |
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341 | push esi edi |
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342 | lea esi, [esp+12] |
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343 | @@: |
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344 | lodsb |
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345 | stosb |
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346 | test bl, 1 |
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347 | jz .ansi3 |
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348 | mov byte [edi], 0 |
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349 | inc edi |
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350 | .ansi3: |
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351 | test al, al |
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352 | jnz @b |
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353 | pop edi esi eax |
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354 | add edi, 520 |
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355 | test bl, 1 |
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356 | jnz .readroot_ah_loop2 |
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357 | sub edi, 520-264 |
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358 | jmp .readroot_ah_loop2 |
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359 | .readroot_done: |
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360 | add esp, 16 |
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361 | pop eax |
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362 | mov ebx, [edx+4] |
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363 | xor eax, eax |
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364 | dec ebp |
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365 | js @f |
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366 | mov al, ERROR_END_OF_FILE |
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367 | @@: |
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368 | mov [image_of_eax], eax |
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369 | mov [image_of_ebx], ebx |
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370 | ret |
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371 | .notfound_try: |
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372 | mov edi, fs_additional_handlers |
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373 | @@: |
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374 | cmp dword [edi], 0 |
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375 | jz @f |
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376 | call dword [edi] |
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377 | scasd |
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378 | scasd |
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379 | jmp @b |
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380 | .notfound: |
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381 | mov dword [image_of_eax], ERROR_FILE_NOT_FOUND |
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382 | and dword [image_of_ebx], 0 |
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383 | ret |
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384 | |||
385 | .notfounda: |
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386 | cmp edi, esp |
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387 | jnz .notfound |
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388 | add esp, 8 |
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389 | jmp .notfound |
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390 | |||
391 | .found1: |
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392 | pop eax |
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393 | cmp byte [esi], 0 |
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394 | jz .maindir |
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395 | .found2: |
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396 | ; read partition number |
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397 | xor ecx, ecx |
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398 | xor eax, eax |
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399 | @@: |
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400 | lodsb |
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401 | cmp al, '/' |
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402 | jz .done1 |
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403 | test al, al |
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404 | jz .done1 |
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405 | sub al, '0' |
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406 | cmp al, 9 |
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407 | ja .notfounda |
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408 | lea ecx, [ecx*5] |
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409 | lea ecx, [ecx*2+eax] |
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410 | jmp @b |
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411 | .done1: |
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412 | jecxz .notfounda |
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413 | test al, al |
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414 | jnz @f |
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415 | dec esi |
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416 | @@: |
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417 | cmp byte [esi], 0 |
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418 | jnz @f |
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419 | test ebp, ebp |
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420 | jz @f |
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421 | mov esi, ebp |
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422 | xor ebp, ebp |
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423 | @@: |
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424 | ; now [edi] contains handler address, ecx - partition number, |
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425 | ; esi points to ASCIIZ string - rest of name |
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426 | jmp dword [edi] |
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427 | |||
428 | ; handlers for devices |
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429 | ; in: ecx = 0 => query virtual directory /xxx |
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430 | ; in: ecx = partition number |
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431 | ; esi -> relative (for device) name |
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432 | ; ebx -> fileinfo |
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433 | ; ebp = 0 or pointer to rest of name from folder addressed by esi |
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434 | ; out: [image_of_eax]=image of eax, [image_of_ebx]=image of ebx |
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435 | |||
436 | fs_OnRamdisk: |
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437 | cmp ecx, 1 |
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438 | jnz file_system_lfn.notfound |
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439 | mov eax, [ebx] |
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440 | cmp eax, fs_NumRamdiskServices |
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441 | jae .not_impl |
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442 | mov ecx, [ebx+12] |
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443 | mov edx, [ebx+16] |
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444 | ; add edx, std_application_base_address |
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445 | add ebx, 4 |
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446 | call dword [fs_RamdiskServices + eax*4] |
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447 | mov [image_of_eax], eax |
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448 | mov [image_of_ebx], ebx |
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449 | ret |
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450 | .not_impl: |
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451 | mov dword [image_of_eax], 2 ; not implemented |
||
452 | ret |
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453 | |||
454 | fs_NotImplemented: |
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455 | mov eax, 2 |
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456 | ret |
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457 | |||
458 | fs_RamdiskServices: |
||
459 | dd fs_RamdiskRead |
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460 | dd fs_RamdiskReadFolder |
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461 | dd fs_RamdiskRewrite |
||
462 | dd fs_RamdiskWrite |
||
463 | dd fs_RamdiskSetFileEnd |
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464 | dd fs_RamdiskGetFileInfo |
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465 | dd fs_RamdiskSetFileInfo |
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466 | dd 0 |
||
467 | dd fs_RamdiskDelete |
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468 | dd fs_RamdiskCreateFolder |
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469 | fs_NumRamdiskServices = ($ - fs_RamdiskServices)/4 |
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470 | |||
471 | fs_OnFloppy: |
||
472 | cmp ecx, 2 |
||
473 | ja file_system_lfn.notfound |
||
474 | mov eax, [ebx] |
||
475 | cmp eax, fs_NumFloppyServices |
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476 | jae fs_OnRamdisk.not_impl |
||
477 | call reserve_flp |
||
478 | mov [flp_number], cl |
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479 | mov ecx, [ebx+12] |
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480 | mov edx, [ebx+16] |
||
481 | ; add edx, std_application_base_address |
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482 | add ebx, 4 |
||
483 | call dword [fs_FloppyServices + eax*4] |
||
484 | and [flp_status], 0 |
||
485 | mov [image_of_eax], eax |
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486 | mov [image_of_ebx], ebx |
||
487 | ret |
||
488 | |||
489 | fs_FloppyServices: |
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490 | dd fs_FloppyRead |
||
491 | dd fs_FloppyReadFolder |
||
492 | dd fs_FloppyRewrite |
||
493 | dd fs_FloppyWrite |
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494 | dd fs_FloppySetFileEnd |
||
495 | dd fs_FloppyGetFileInfo |
||
496 | dd fs_FloppySetFileInfo |
||
497 | dd 0 |
||
498 | dd fs_FloppyDelete |
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499 | dd fs_FloppyCreateFolder |
||
500 | fs_NumFloppyServices = ($ - fs_FloppyServices)/4 |
||
501 | |||
502 | fs_OnHd0: |
||
503 | call reserve_hd1 |
||
504 | mov [hdbase], 0x1F0 |
||
505 | mov [hdid], 0 |
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506 | push 1 |
||
507 | jmp fs_OnHd |
||
508 | fs_OnHd1: |
||
509 | call reserve_hd1 |
||
510 | mov [hdbase], 0x1F0 |
||
511 | mov [hdid], 0x10 |
||
512 | push 2 |
||
513 | jmp fs_OnHd |
||
514 | fs_OnHd2: |
||
515 | call reserve_hd1 |
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516 | mov [hdbase], 0x170 |
||
517 | mov [hdid], 0 |
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518 | push 3 |
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519 | jmp fs_OnHd |
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520 | fs_OnHd3: |
||
521 | call reserve_hd1 |
||
522 | mov [hdbase], 0x170 |
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523 | mov [hdid], 0x10 |
||
524 | push 4 |
||
525 | fs_OnHd: |
||
526 | call reserve_hd_channel |
||
527 | pop eax |
||
528 | mov [hdpos], eax |
||
529 | cmp ecx, 0x100 |
||
530 | jae fs_OnHdAndBd.nf |
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531 | cmp cl, [DRIVE_DATA+1+eax] |
||
532 | fs_OnHdAndBd: |
||
533 | jbe @f |
||
534 | .nf: |
||
535 | call free_hd_channel |
||
536 | and [hd1_status], 0 |
||
537 | mov dword [image_of_eax], 5 ; not found |
||
538 | ret |
||
539 | @@: |
||
540 | mov [fat32part], ecx |
||
541 | push ebx esi |
||
542 | call choice_necessity_partition_1 |
||
543 | pop esi ebx |
||
544 | mov ecx, [ebx+12] |
||
545 | mov edx, [ebx+16] |
||
546 | ; add edx, std_application_base_address |
||
547 | mov eax, [ebx] |
||
548 | cmp eax, fs_NumHdServices |
||
549 | jae .not_impl |
||
550 | add ebx, 4 |
||
551 | call dword [fs_HdServices + eax*4] |
||
552 | call free_hd_channel |
||
553 | and [hd1_status], 0 |
||
554 | mov [image_of_eax], eax |
||
555 | mov [image_of_ebx], ebx |
||
556 | ret |
||
557 | .not_impl: |
||
558 | call free_hd_channel |
||
559 | and [hd1_status], 0 |
||
560 | mov dword [image_of_eax], 2 ; not implemented |
||
561 | ret |
||
562 | |||
563 | fs_HdServices: |
||
564 | dd fs_HdRead |
||
565 | dd fs_HdReadFolder |
||
566 | dd fs_HdRewrite |
||
567 | dd fs_HdWrite |
||
568 | dd fs_HdSetFileEnd |
||
569 | dd fs_HdGetFileInfo |
||
570 | dd fs_HdSetFileInfo |
||
571 | dd 0 |
||
572 | dd fs_HdDelete |
||
573 | dd fs_HdCreateFolder |
||
574 | fs_NumHdServices = ($ - fs_HdServices)/4 |
||
575 | |||
576 | ;******************************************************* |
||
577 | fs_OnCd0: |
||
578 | call reserve_cd |
||
579 | mov [ChannelNumber],1 |
||
580 | mov [DiskNumber],0 |
||
581 | push 6 |
||
582 | push 1 |
||
583 | jmp fs_OnCd |
||
584 | fs_OnCd1: |
||
585 | call reserve_cd |
||
586 | mov [ChannelNumber],1 |
||
587 | mov [DiskNumber],1 |
||
588 | push 4 |
||
589 | push 2 |
||
590 | jmp fs_OnCd |
||
591 | fs_OnCd2: |
||
592 | call reserve_cd |
||
593 | mov [ChannelNumber],2 |
||
594 | mov [DiskNumber],0 |
||
595 | push 2 |
||
596 | push 3 |
||
597 | jmp fs_OnCd |
||
598 | fs_OnCd3: |
||
599 | call reserve_cd |
||
600 | mov [ChannelNumber],2 |
||
601 | mov [DiskNumber],1 |
||
602 | push 0 |
||
603 | push 4 |
||
604 | fs_OnCd: |
||
605 | call reserve_cd_channel |
||
606 | pop eax |
||
607 | mov [cdpos], eax |
||
608 | pop eax |
||
609 | cmp ecx, 0x100 |
||
610 | jae .nf |
||
611 | push ecx ebx |
||
612 | mov cl,al |
||
613 | mov bl,[DRIVE_DATA+1] |
||
614 | shr bl,cl |
||
615 | test bl,2 |
||
616 | pop ebx ecx |
||
617 | |||
618 | jnz @f |
||
619 | .nf: |
||
620 | call free_cd_channel |
||
621 | and [cd_status], 0 |
||
622 | mov dword [image_of_eax], 5 ; not found |
||
623 | ret |
||
624 | @@: |
||
625 | mov ecx, [ebx+12] |
||
626 | mov edx, [ebx+16] |
||
627 | ; add edx, std_application_base_address |
||
628 | mov eax, [ebx] |
||
629 | cmp eax,fs_NumCdServices |
||
630 | jae .not_impl |
||
631 | add ebx, 4 |
||
632 | call dword [fs_CdServices + eax*4] |
||
633 | call free_cd_channel |
||
634 | and [cd_status], 0 |
||
635 | mov [image_of_eax], eax |
||
636 | mov [image_of_ebx], ebx |
||
637 | ret |
||
638 | .not_impl: |
||
639 | call free_cd_channel |
||
640 | and [cd_status], 0 |
||
641 | mov dword [image_of_eax], 2 ; not implemented |
||
642 | ret |
||
643 | |||
644 | fs_CdServices: |
||
645 | dd fs_CdRead |
||
646 | dd fs_CdReadFolder |
||
647 | dd fs_NotImplemented |
||
648 | dd fs_NotImplemented |
||
649 | dd fs_NotImplemented |
||
650 | dd fs_CdGetFileInfo |
||
651 | dd fs_NotImplemented |
||
652 | dd 0 |
||
653 | dd fs_NotImplemented |
||
654 | dd fs_NotImplemented |
||
655 | fs_NumCdServices = ($ - fs_CdServices)/4 |
||
656 | |||
657 | ;******************************************************* |
||
658 | |||
659 | fs_HasRamdisk: |
||
660 | mov al, 1 ; we always have ramdisk |
||
661 | ret |
||
662 | |||
663 | fs_HasFloppy: |
||
664 | cmp byte [DRIVE_DATA], 0 |
||
665 | setnz al |
||
666 | ret |
||
667 | |||
668 | fs_HasHd0: |
||
669 | mov al, [DRIVE_DATA+1] |
||
670 | and al, 11000000b |
||
671 | cmp al, 01000000b |
||
672 | setz al |
||
673 | ret |
||
674 | fs_HasHd1: |
||
675 | mov al, [DRIVE_DATA+1] |
||
676 | and al, 00110000b |
||
677 | cmp al, 00010000b |
||
678 | setz al |
||
679 | ret |
||
680 | fs_HasHd2: |
||
681 | mov al, [DRIVE_DATA+1] |
||
682 | and al, 00001100b |
||
683 | cmp al, 00000100b |
||
684 | setz al |
||
685 | ret |
||
686 | fs_HasHd3: |
||
687 | mov al, [DRIVE_DATA+1] |
||
688 | and al, 00000011b |
||
689 | cmp al, 00000001b |
||
690 | setz al |
||
691 | ret |
||
692 | |||
693 | ;******************************************************* |
||
694 | fs_HasCd0: |
||
695 | mov al, [DRIVE_DATA+1] |
||
696 | and al, 11000000b |
||
697 | cmp al, 10000000b |
||
698 | setz al |
||
699 | ret |
||
700 | fs_HasCd1: |
||
701 | mov al, [DRIVE_DATA+1] |
||
702 | and al, 00110000b |
||
703 | cmp al, 00100000b |
||
704 | setz al |
||
705 | ret |
||
706 | fs_HasCd2: |
||
707 | mov al, [DRIVE_DATA+1] |
||
708 | and al, 00001100b |
||
709 | cmp al, 00001000b |
||
710 | setz al |
||
711 | ret |
||
712 | fs_HasCd3: |
||
713 | mov al, [DRIVE_DATA+1] |
||
714 | and al, 00000011b |
||
715 | cmp al, 00000010b |
||
716 | setz al |
||
717 | ret |
||
718 | ;******************************************************* |
||
719 | |||
720 | ; fs_NextXXX functions: |
||
721 | ; in: eax = partition number, from which start to scan |
||
722 | ; out: CF=1 => no more partitions |
||
723 | ; CF=0 => eax=next partition number |
||
724 | |||
725 | fs_NextRamdisk: |
||
726 | ; we always have /rd/1 |
||
727 | test eax, eax |
||
728 | stc |
||
729 | jnz @f |
||
730 | mov al, 1 |
||
731 | clc |
||
732 | @@: |
||
733 | ret |
||
734 | |||
735 | fs_NextFloppy: |
||
736 | ; we have /fd/1 iff (([DRIVE_DATA] and 0xF0) != 0) and /fd/2 iff (([DRIVE_DATA] and 0x0F) != 0) |
||
737 | test byte [DRIVE_DATA], 0xF0 |
||
738 | jz .no1 |
||
739 | test eax, eax |
||
740 | jnz .no1 |
||
741 | inc eax |
||
742 | ret ; CF cleared |
||
743 | .no1: |
||
744 | test byte [DRIVE_DATA], 0x0F |
||
745 | jz .no2 |
||
746 | cmp al, 2 |
||
747 | jae .no2 |
||
748 | mov al, 2 |
||
749 | clc |
||
750 | ret |
||
751 | .no2: |
||
752 | stc |
||
753 | ret |
||
754 | |||
755 | ; on hdx, we have partitions from 1 to [0x40002+x] |
||
756 | fs_NextHd0: |
||
757 | push 0 |
||
758 | jmp fs_NextHd |
||
759 | fs_NextHd1: |
||
760 | push 1 |
||
761 | jmp fs_NextHd |
||
762 | fs_NextHd2: |
||
763 | push 2 |
||
764 | jmp fs_NextHd |
||
765 | fs_NextHd3: |
||
766 | push 3 |
||
767 | fs_NextHd: |
||
768 | pop ecx |
||
769 | movzx ecx, byte [DRIVE_DATA+2+ecx] |
||
770 | cmp eax, ecx |
||
771 | jae fs_NextFloppy.no2 |
||
772 | inc eax |
||
773 | clc |
||
774 | ret |
||
775 | |||
776 | ;******************************************************* |
||
777 | fs_NextCd: |
||
778 | ; we always have /cdX/1 |
||
779 | test eax, eax |
||
780 | stc |
||
781 | jnz @f |
||
782 | mov al, 1 |
||
783 | clc |
||
784 | @@: |
||
785 | ret |
||
786 | ;******************************************************* |
||
787 | |||
788 | ; Additional FS handlers. |
||
789 | ; This handler gets the control each time when fn 70 is called |
||
790 | ; with unknown item of root subdirectory. |
||
791 | ; in: esi -> name |
||
792 | ; ebp = 0 or rest of name relative to esi |
||
793 | ; out: if the handler processes path, he must not return in file_system_lfn, |
||
794 | ; but instead pop return address and return directly to the caller |
||
795 | ; otherwise simply return |
||
796 | |||
797 | ; here we test for /bd |
||
798 | biosdisk_handler: |
||
799 | cmp [NumBiosDisks], 0 |
||
800 | jz .ret |
||
801 | mov al, [esi] |
||
802 | or al, 20h |
||
803 | cmp al, 'b' |
||
804 | jnz .ret |
||
805 | mov al, [esi+1] |
||
806 | or al, 20h |
||
807 | cmp al, 'd' |
||
808 | jnz .ret |
||
809 | push esi |
||
810 | inc esi |
||
811 | inc esi |
||
812 | cmp byte [esi], '0' |
||
813 | jb .ret2 |
||
814 | cmp byte [esi], '9' |
||
815 | ja .ret2 |
||
816 | xor edx, edx |
||
817 | @@: |
||
818 | lodsb |
||
819 | test al, al |
||
820 | jz .ok |
||
821 | cmp al, '/' |
||
822 | jz .ok |
||
823 | sub al, '0' |
||
824 | cmp al, 9 |
||
825 | ja .ret2 |
||
826 | lea edx, [edx*5] |
||
827 | lea edx, [edx*2+eax] |
||
828 | jmp @b |
||
829 | .ret2: |
||
830 | pop esi |
||
831 | .ret: |
||
832 | ret |
||
833 | .ok: |
||
834 | cmp al, '/' |
||
835 | jz @f |
||
836 | dec esi |
||
837 | @@: |
||
838 | add dl, 80h |
||
839 | xor ecx, ecx |
||
840 | @@: |
||
841 | cmp dl, [BiosDisksData+ecx*4] |
||
842 | jz .ok2 |
||
843 | inc ecx |
||
844 | cmp ecx, [NumBiosDisks] |
||
845 | jb @b |
||
846 | jmp .ret2 |
||
847 | .ok2: |
||
848 | add esp, 8 |
||
849 | test al, al |
||
850 | jnz @f |
||
851 | mov esi, fs_BdNext |
||
852 | jmp file_system_lfn.maindir_noesi |
||
853 | @@: |
||
854 | push ecx |
||
855 | push fs_OnBd |
||
856 | mov edi, esp |
||
857 | jmp file_system_lfn.found2 |
||
858 | |||
859 | fs_BdNext: |
||
860 | cmp eax, [BiosDiskPartitions+ecx*4] |
||
861 | inc eax |
||
862 | cmc |
||
863 | ret |
||
864 | |||
865 | fs_OnBd: |
||
866 | pop edx edx |
||
867 | ; edx = disk number, ecx = partition number |
||
868 | ; esi+ebp = name |
||
869 | call reserve_hd1 |
||
870 | add edx, 0x80 |
||
871 | mov [hdpos], edx |
||
872 | cmp ecx, [BiosDiskPartitions+(edx-0x80)*4] |
||
873 | jmp fs_OnHdAndBd |
||
874 | |||
875 | ; This handler is called when virtual root is enumerated |
||
876 | ; and must return all items which can be handled by this. |
||
877 | ; It is called several times, first time with eax=0 |
||
878 | ; in: eax = 0 for first call, previously returned value for subsequent calls |
||
879 | ; out: eax = 0 => no more items |
||
880 | ; eax != 0 => buffer pointed to by edi contains name of item |
||
881 | |||
882 | ; here we enumerate existing BIOS disks /bd |
||
883 | biosdisk_enum_root: |
||
884 | cmp eax, [NumBiosDisks] |
||
885 | jae .end |
||
886 | push eax |
||
887 | movzx eax, byte [BiosDisksData+eax*4] |
||
888 | sub al, 80h |
||
889 | push eax |
||
890 | mov al, 'b' |
||
891 | stosb |
||
892 | mov al, 'd' |
||
893 | stosb |
||
894 | pop eax |
||
895 | cmp al, 10 |
||
896 | jae .big |
||
897 | add al, '0' |
||
898 | stosb |
||
899 | mov byte [edi], 0 |
||
900 | pop eax |
||
901 | inc eax |
||
902 | ret |
||
903 | .end: |
||
904 | xor eax, eax |
||
905 | ret |
||
906 | .big: |
||
907 | push ecx |
||
908 | push -'0' |
||
909 | mov ecx, 10 |
||
910 | @@: |
||
911 | xor edx, edx |
||
912 | div ecx |
||
913 | push edx |
||
914 | test eax, eax |
||
915 | jnz @b |
||
916 | xchg eax, edx |
||
917 | @@: |
||
918 | pop eax |
||
919 | add al, '0' |
||
920 | stosb |
||
921 | jnz @b |
||
922 | pop ecx |
||
923 | pop eax |
||
924 | inc eax |
||
925 | ret |
||
926 | |||
927 | process_replace_file_name: |
||
928 | mov ebp, [full_file_name_table] |
||
929 | mov edi, [full_file_name_table.size] |
||
930 | dec edi |
||
931 | shl edi, 7 |
||
932 | add edi, ebp |
||
933 | .loop: |
||
934 | cmp edi, ebp |
||
935 | jb .notfound |
||
936 | push esi edi |
||
937 | @@: |
||
938 | cmp byte [edi], 0 |
||
939 | jz .dest_done |
||
940 | lodsb |
||
941 | test al, al |
||
942 | jz .cont |
||
943 | or al, 20h |
||
944 | scasb |
||
945 | jz @b |
||
946 | jmp .cont |
||
947 | .dest_done: |
||
948 | cmp byte [esi], 0 |
||
949 | jz .found |
||
950 | cmp byte [esi], '/' |
||
951 | jnz .cont |
||
952 | inc esi |
||
953 | jmp .found |
||
954 | .cont: |
||
955 | pop edi esi |
||
956 | sub edi, 128 |
||
957 | jmp .loop |
||
958 | .found: |
||
959 | pop edi eax |
||
960 | mov ebp, esi |
||
961 | cmp byte [esi], 0 |
||
962 | lea esi, [edi+64] |
||
963 | jnz .ret |
||
964 | .notfound: |
||
965 | xor ebp, ebp |
||
966 | .ret: |
||
967 | ret |
||
968 | |||
969 | sys_current_directory: |
||
970 | mov esi, [current_slot] |
||
971 | mov esi, [esi+APPDATA.cur_dir] |
||
972 | mov edx, esi |
||
973 | dec eax |
||
974 | jz .set |
||
975 | dec eax |
||
976 | jz .get |
||
977 | ret |
||
978 | .get: |
||
979 | ; sysfunction 30.2: [for app] eax=30,ebx=2,ecx->buffer,edx=len |
||
980 | ; for our code: ebx->buffer,ecx=len |
||
981 | @@: |
||
982 | lodsb |
||
983 | test al, al |
||
984 | jnz @b |
||
985 | sub esi, edx |
||
986 | inc esi |
||
987 | mov [esp+36], esi |
||
988 | cmp ecx, esi |
||
989 | jbe @f |
||
990 | mov ecx, esi |
||
991 | @@: |
||
992 | cmp ecx, 1 |
||
993 | jbe .ret |
||
994 | mov esi, edx |
||
995 | mov edi, ebx |
||
996 | mov al, '/' |
||
997 | stosb |
||
998 | dec ecx |
||
999 | dec ecx |
||
1000 | rep movsb |
||
1001 | mov byte [edi], 0 |
||
1002 | .ret: |
||
1003 | ret |
||
1004 | .set: |
||
1005 | ; sysfunction 30.1: [for app] eax=30,ebx=1,ecx->string |
||
1006 | ; for our code: ebx->string to set |
||
1007 | @@: |
||
1008 | inc esi |
||
1009 | cmp byte [esi-1], 0 |
||
1010 | jnz @b |
||
1011 | dec esi |
||
1012 | cmp byte [ebx], '/' |
||
1013 | jz .set_absolute |
||
1014 | ; string gives relative path |
||
1015 | .relative: |
||
1016 | cmp byte [ebx], 0 |
||
1017 | jz .set_ok |
||
1018 | cmp word [ebx], '.' |
||
1019 | jz .set_ok |
||
1020 | cmp word [ebx], './' |
||
1021 | jnz @f |
||
1022 | add ebx, 2 |
||
1023 | jmp .relative |
||
1024 | @@: |
||
1025 | cmp word [ebx], '..' |
||
1026 | jnz .doset_relative |
||
1027 | cmp byte [ebx+2], 0 |
||
1028 | jz @f |
||
1029 | cmp byte [ebx+2], '/' |
||
1030 | jnz .doset_relative |
||
1031 | @@: |
||
1032 | dec esi |
||
1033 | cmp byte [esi], '/' |
||
1034 | jnz @b |
||
1035 | mov byte [esi], 0 |
||
1036 | add ebx, 3 |
||
1037 | jmp .relative |
||
1038 | .doset_relative: |
||
1039 | add edx, 0x1000 |
||
1040 | mov byte [esi], '/' |
||
1041 | inc esi |
||
1042 | cmp esi, edx |
||
1043 | jae .overflow_esi |
||
1044 | @@: |
||
1045 | mov al, [ebx] |
||
1046 | inc ebx |
||
1047 | mov [esi], al |
||
1048 | inc esi |
||
1049 | test al, al |
||
1050 | jz .set_ok |
||
1051 | cmp esi, edx |
||
1052 | jb @b |
||
1053 | .overflow_esi: |
||
1054 | mov byte [esi-1], 0 ; force null-terminated string |
||
1055 | .set_ok: |
||
1056 | ret |
||
1057 | .set_absolute: |
||
1058 | lea esi, [ebx+1] |
||
1059 | call process_replace_file_name |
||
1060 | mov edi, edx |
||
1061 | add edx, 0x1000 |
||
1062 | .set_copy: |
||
1063 | lodsb |
||
1064 | stosb |
||
1065 | test al, al |
||
1066 | jz .set_part2 |
||
1067 | .set_copy_cont: |
||
1068 | cmp edi, edx |
||
1069 | jb .set_copy |
||
1070 | .overflow_edi: |
||
1071 | mov byte [edi-1], 0 |
||
1072 | ret |
||
1073 | .set_part2: |
||
1074 | mov esi, ebp |
||
1075 | xor ebp, ebp |
||
1076 | test esi, esi |
||
1077 | jz .set_ok |
||
1078 | mov byte [edi-1], '/' |
||
1079 | jmp .set_copy_cont |