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Rev | Author | Line No. | Line |
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94 | mario79 | 1 | |
87 | mario79 | 2 | cd_current_pointer_of_input dd 0 |
3 | cd_current_pointer_of_input_2 dd 0 |
||
4 | cd_mem_location dd 0 |
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5 | cd_counter_block dd 0 |
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6 | IDE_Channel_1 db 0 |
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95 | mario79 | 7 | IDE_Channel_2 db 0 |
8 | endg |
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87 | mario79 | 9 | |
10 | |||
11 | |||
12 | |||
13 | |||
14 | |||
15 | cmp [cd_status],0 |
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16 | je reserve_ok2 |
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17 | |||
18 | |||
19 | call change_task |
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20 | jmp reserve_cd |
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95 | mario79 | 21 | |
87 | mario79 | 22 | |
23 | |||
24 | |||
25 | mov eax,[0x3000] |
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26 | shl eax,5 |
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27 | mov eax,[eax+0x3000+4] |
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28 | mov [cd_status],eax |
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29 | pop eax |
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30 | sti |
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31 | ret |
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32 | |||
95 | mario79 | 33 | |
34 | cmp [ChannelNumber],1 |
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35 | jne .IDE_Channel_2 |
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36 | .IDE_Channel_1: |
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37 | cli |
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38 | cmp [IDE_Channel_1],0 |
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39 | je .reserve_ok_1 |
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40 | sti |
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41 | call change_task |
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42 | jmp .IDE_Channel_1 |
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43 | .IDE_Channel_2: |
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44 | cli |
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45 | cmp [IDE_Channel_2],0 |
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46 | je .reserve_ok_2 |
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47 | sti |
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48 | call change_task |
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49 | jmp .IDE_Channel_1 |
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50 | .reserve_ok_1: |
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51 | mov [IDE_Channel_1],1 |
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52 | ret |
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53 | .reserve_ok_2: |
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54 | mov [IDE_Channel_2],1 |
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55 | ret |
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56 | |||
57 | |||
58 | cmp [ChannelNumber],1 |
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59 | jne .IDE_Channel_2 |
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60 | .IDE_Channel_1: |
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61 | mov [IDE_Channel_1],0 |
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62 | ret |
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63 | .IDE_Channel_2: |
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64 | mov [IDE_Channel_2],0 |
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65 | ret |
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66 | |||
87 | mario79 | 67 | |
68 | |||
69 | |||
70 | ; |
||
71 | ; fs_CdRead - LFN variant for reading CD disk |
||
72 | ; |
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73 | ; esi points to filename /dir1/dir2/.../dirn/file,0 |
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74 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
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75 | ; may be ebx=0 - start from first byte |
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76 | ; ecx number of bytes to read, 0+ |
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77 | ; edx mem location to return data |
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78 | ; |
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79 | ; ret ebx = bytes read or 0xffffffff file not found |
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80 | ; eax = 0 ok read or other = errormsg |
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81 | ; |
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82 | ;-------------------------------------------------------------- |
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83 | fs_CdRead: |
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84 | push edi |
||
85 | cmp byte [esi], 0 |
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86 | jnz @f |
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87 | .noaccess: |
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88 | pop edi |
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89 | .noaccess_2: |
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90 | or ebx, -1 |
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91 | mov eax, ERROR_ACCESS_DENIED |
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92 | ret |
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93 | |||
94 | |||
95 | pop eax edx ecx edi |
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96 | jmp .noaccess_2 |
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97 | |||
98 | |||
99 | call cd_find_lfn |
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100 | jnc .found |
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101 | pop edi |
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102 | cmp [DevErrorCode],0 |
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103 | jne .noaccess_2 |
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104 | or ebx, -1 |
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105 | mov eax, ERROR_FILE_NOT_FOUND |
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106 | ret |
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107 | |||
108 | |||
109 | mov edi,[cd_current_pointer_of_input] |
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110 | test byte [edi+25],10b ; do not allow read directories |
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111 | jnz .noaccess |
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112 | test ebx, ebx |
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113 | jz .l1 |
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114 | cmp dword [ebx+4], 0 |
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115 | jz @f |
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116 | xor ebx, ebx |
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117 | .reteof: |
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118 | mov eax, 6 ; end of file |
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119 | pop edi |
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120 | ret |
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121 | @@: |
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122 | mov ebx, [ebx] |
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123 | .l1: |
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124 | push ecx edx |
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125 | push 0 |
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126 | mov eax, [edi+10] ; реальный размер файловой секции |
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127 | sub eax, ebx |
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128 | jb .eof |
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129 | cmp eax, ecx |
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130 | jae @f |
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131 | mov ecx, eax |
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132 | mov byte [esp], 6 |
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133 | @@: |
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134 | mov eax,[edi+2] |
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135 | mov [CDSectorAddress],eax |
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136 | ; now eax=cluster, ebx=position, ecx=count, edx=buffer for data |
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137 | .new_sector: |
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138 | test ecx, ecx |
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139 | jz .done |
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140 | sub ebx, 2048 |
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141 | jae .new_sector |
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142 | add ebx, 2048 |
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143 | jnz .incomplete_sector |
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144 | cmp ecx, 2048 |
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145 | jb .incomplete_sector |
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146 | ; we may read and memmove complete sector |
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147 | mov [CDDataBuf_pointer],edx |
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148 | call ReadCDWRetr ; читаем сектор файла |
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149 | cmp [DevErrorCode],0 |
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150 | jne .noaccess_3 |
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151 | inc dword [CDSectorAddress] |
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152 | add edx, 2048 |
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153 | sub ecx, 2048 |
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154 | jmp .new_sector |
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155 | .incomplete_sector: |
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156 | ; we must read and memmove incomplete sector |
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157 | mov [CDDataBuf_pointer],CDDataBuf |
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158 | call ReadCDWRetr ; читаем сектор файла |
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159 | cmp [DevErrorCode],0 |
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160 | jne .noaccess_3 |
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161 | inc dword [CDSectorAddress] |
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162 | mov eax,CDDataBuf |
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163 | add eax, ebx |
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164 | push ecx |
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165 | add ecx, ebx |
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166 | cmp ecx, 2048 |
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167 | jbe @f |
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168 | mov ecx, 2048 |
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169 | @@: |
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170 | sub ecx, ebx |
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171 | push edi esi ecx |
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172 | mov edi,edx |
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173 | mov esi,eax ;0x7000 ; CD data buffer |
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174 | cld |
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175 | rep movsb |
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176 | pop ecx esi edi |
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177 | add edx, ecx |
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178 | sub [esp], ecx |
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179 | pop ecx |
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180 | xor ebx, ebx |
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181 | jmp .new_sector |
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182 | |||
183 | |||
184 | mov ebx, edx |
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185 | pop eax edx ecx edi |
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186 | sub ebx, edx |
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187 | ret |
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188 | .eof: |
||
189 | mov ebx, edx |
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190 | pop eax edx ecx |
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191 | sub ebx, edx |
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192 | jmp .reteof |
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193 | |||
194 | |||
195 | ; |
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196 | ; fs_CdReadFolder - LFN variant for reading CD disk folder |
||
197 | ; |
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198 | ; esi points to filename /dir1/dir2/.../dirn/file,0 |
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199 | ; ebx pointer to structure 32-bit number = first wanted block, 0+ |
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200 | ; & flags (bitfields) |
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201 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
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202 | ; ecx number of blocks to read, 0+ |
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203 | ; edx mem location to return data |
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204 | ; |
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205 | ; ret ebx = blocks read or 0xffffffff folder not found |
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206 | ; eax = 0 ok read or other = errormsg |
||
207 | ; |
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208 | ;-------------------------------------------------------------- |
||
209 | fs_CdReadFolder: |
||
210 | push edi |
||
211 | call cd_find_lfn |
||
212 | jnc .found |
||
213 | pop edi |
||
214 | cmp [DevErrorCode],0 |
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215 | jne .noaccess_1 |
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216 | or ebx, -1 |
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217 | mov eax, ERROR_FILE_NOT_FOUND |
||
218 | ret |
||
219 | .found: |
||
220 | mov edi,[cd_current_pointer_of_input] |
||
221 | test byte [edi+25],10b ; do not allow read directories |
||
222 | jnz .found_dir |
||
223 | pop edi |
||
224 | .noaccess_1: |
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225 | or ebx, -1 |
||
226 | mov eax, ERROR_ACCESS_DENIED |
||
227 | ret |
||
228 | .found_dir: |
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229 | mov eax,[edi+2] ; eax=cluster |
||
230 | mov [CDSectorAddress],eax |
||
231 | mov eax,[edi+10] ; размер директрории |
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232 | .doit: |
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233 | ; init header |
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234 | push eax ecx |
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235 | mov edi, edx |
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236 | mov ecx, 32/4 |
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237 | xor eax, eax |
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238 | rep stosd |
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239 | pop ecx eax |
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240 | mov byte [edx], 1 ; version |
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241 | mov [cd_mem_location],edx |
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242 | add [cd_mem_location],32 |
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243 | ; начинаем переброску БДВК в УСВК |
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244 | ;.mainloop: |
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245 | mov [cd_counter_block],dword 0 |
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246 | dec dword [CDSectorAddress] |
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247 | push ecx |
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248 | .read_to_buffer: |
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249 | inc dword [CDSectorAddress] |
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250 | mov [CDDataBuf_pointer],CDDataBuf |
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251 | call ReadCDWRetr ; читаем сектор директории |
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252 | cmp [DevErrorCode],0 |
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253 | jne .noaccess_1 |
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254 | call .get_names_from_buffer |
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255 | sub eax,2048 |
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256 | ; директория закончилась? |
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257 | cmp eax,0 |
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258 | jg .read_to_buffer |
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259 | mov edi,[cd_counter_block] |
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260 | mov [edx+8],edi |
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261 | mov edi,[ebx] |
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262 | sub [edx+4],edi |
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263 | pop ecx edi |
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264 | mov ebx, [edx+4] |
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89 | diamond | 265 | mov eax,ERROR_SUCCESS |
87 | mario79 | 266 | ret |
267 | |||
268 | |||
269 | mov [cd_current_pointer_of_input_2],CDDataBuf |
||
270 | push eax esi edi edx |
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271 | .get_names_from_buffer_1: |
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272 | call cd_get_name |
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273 | jc .end_buffer |
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274 | inc dword [cd_counter_block] |
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275 | mov eax,[cd_counter_block] |
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276 | cmp [ebx],eax |
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277 | jae .get_names_from_buffer_1 |
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278 | test ecx, ecx |
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279 | jz .get_names_from_buffer_1 |
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280 | mov edi,[cd_counter_block] |
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281 | mov [edx+4],edi |
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282 | dec ecx |
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283 | mov esi,ebp |
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284 | mov edi,[cd_mem_location] |
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285 | add edi,40 |
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286 | test dword [ebx+4], 1 ; 0=ANSI, 1=UNICODE |
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287 | jnz .unicode |
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288 | ; jmp .unicode |
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289 | .ansi: |
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290 | cmp [cd_counter_block],2 |
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291 | jbe .ansi_parent_directory |
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292 | cld |
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293 | lodsw |
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294 | xchg ah,al |
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295 | call uni2ansi_char |
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296 | cld |
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297 | stosb |
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298 | ; проверка конца файла |
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299 | mov al,[esi+1] |
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300 | cmp al,byte 3Bh ; сепаратор конца файла ';' |
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301 | je .cd_get_parameters_of_file_1 |
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302 | ; проверка для файлов не заканчивающихся сепаратором |
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303 | movzx eax,byte [ebp-33] |
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304 | add eax,ebp |
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305 | sub eax,34 |
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306 | cmp esi,eax |
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307 | je .cd_get_parameters_of_file_1 |
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308 | ; проверка конца папки |
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309 | movzx eax,byte [ebp-1] |
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310 | add eax,ebp |
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311 | cmp esi,eax |
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312 | jb .ansi |
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313 | .cd_get_parameters_of_file_1: |
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314 | mov [edi],byte 0 |
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315 | call cd_get_parameters_of_file |
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90 | mario79 | 316 | add [cd_mem_location],304 |
87 | mario79 | 317 | jmp .get_names_from_buffer_1 |
318 | |||
319 | |||
320 | cmp [cd_counter_block],2 |
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321 | je @f |
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322 | mov [edi],byte '.' |
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323 | inc edi |
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324 | jmp .cd_get_parameters_of_file_1 |
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325 | @@: |
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326 | mov [edi],word '..' |
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327 | add edi,2 |
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328 | jmp .cd_get_parameters_of_file_1 |
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329 | |||
330 | |||
331 | cmp [cd_counter_block],2 |
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332 | jbe .unicode_parent_directory |
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333 | cld |
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334 | movsw |
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335 | ; проверка конца файла |
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336 | mov ax,[esi] |
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337 | cmp ax,word 3B00h ; сепаратор конца файла ';' |
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338 | je .cd_get_parameters_of_file_2 |
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339 | ; проверка для файлов не заканчивающихся сепаратором |
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340 | movzx eax,byte [ebp-33] |
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341 | add eax,ebp |
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342 | sub eax,34 |
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343 | cmp esi,eax |
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344 | je .cd_get_parameters_of_file_2 |
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345 | ; проверка конца папки |
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346 | movzx eax,byte [ebp-1] |
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347 | add eax,ebp |
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348 | cmp esi,eax |
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349 | jb .unicode |
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350 | .cd_get_parameters_of_file_2: |
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351 | mov [edi],word 0 |
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352 | call cd_get_parameters_of_file |
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90 | mario79 | 353 | add [cd_mem_location],560 |
87 | mario79 | 354 | jmp .get_names_from_buffer_1 |
355 | |||
356 | |||
357 | cmp [cd_counter_block],2 |
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358 | je @f |
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359 | mov [edi],word 2E00h ; '.' |
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360 | add edi,2 |
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361 | jmp .cd_get_parameters_of_file_2 |
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362 | @@: |
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363 | mov [edi],dword 2E002E00h ; '..' |
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364 | add edi,4 |
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365 | jmp .cd_get_parameters_of_file_2 |
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366 | |||
367 | |||
90 | mario79 | 368 | pop edx edi esi eax |
369 | ret |
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370 | |||
371 | |||
372 | mov edi,[cd_mem_location] |
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87 | mario79 | 373 | cd_get_parameters_of_file_1: |
90 | mario79 | 374 | ; получаем атрибуты файла |
87 | mario79 | 375 | xor eax,eax |
376 | ; файл не архивировался |
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377 | inc al |
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378 | shl eax,1 |
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379 | ; это каталог? |
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380 | test [ebp-8],byte 2 |
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381 | jz .file |
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382 | inc al |
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383 | .file: |
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384 | ; метка тома не как в FAT, в этом виде отсутсвует |
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385 | ; файл не является системным |
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386 | shl eax,3 |
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387 | ; файл является скрытым? (атрибут существование) |
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388 | test [ebp-8],byte 1 |
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389 | jz .hidden |
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390 | inc al |
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391 | .hidden: |
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392 | shl eax,1 |
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393 | ; файл всегда только для чтения, так как это CD |
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394 | inc al |
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395 | mov [edi],eax |
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396 | ; получаем время для файла |
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397 | ;час |
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398 | movzx eax,byte [ebp-12] |
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399 | shl eax,8 |
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400 | ;минута |
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401 | mov al,[ebp-11] |
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402 | shl eax,8 |
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403 | ;секунда |
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404 | mov al,[ebp-10] |
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405 | ;время создания файла |
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406 | mov [edi+8],eax |
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407 | ;время последнего доступа |
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408 | mov [edi+16],eax |
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409 | ;время последней записи |
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410 | mov [edi+24],eax |
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411 | ; получаем дату для файла |
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412 | ;год |
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413 | movzx eax,byte [ebp-15] |
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414 | add eax,1900 |
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415 | shl eax,8 |
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416 | ;месяц |
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417 | mov al,[ebp-14] |
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418 | shl eax,8 |
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419 | ;день |
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420 | mov al,[ebp-13] |
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421 | ;дата создания файла |
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422 | mov [edi+12],eax |
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423 | ;время последнего доступа |
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424 | mov [edi+20],eax |
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425 | ;время последней записи |
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426 | mov [edi+28],eax |
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427 | ; получаем тип данных имени |
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428 | xor eax,eax |
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429 | test dword [ebx+4], 1 ; 0=ANSI, 1=UNICODE |
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430 | jnz .unicode_1 |
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431 | mov [edi+4],eax |
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432 | jmp @f |
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433 | .unicode_1: |
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434 | inc eax |
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435 | mov [edi+4],eax |
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436 | @@: |
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437 | ; получаем размер файла в байтах |
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438 | xor eax,eax |
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439 | mov [edi+32+4],eax |
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440 | mov eax,[ebp-23] |
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441 | mov [edi+32],eax |
||
442 | ret |
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443 | |||
444 | |||
90 | mario79 | 445 | ; |
446 | ; fs_CdGetFileInfo - LFN variant for CD |
||
447 | ; get file/directory attributes structure |
||
448 | ; |
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449 | ;---------------------------------------------------------------- |
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450 | fs_CdGetFileInfo: |
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451 | cmp byte [esi], 0 |
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452 | jnz @f |
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453 | mov eax, 2 |
||
454 | ret |
||
455 | @@: |
||
456 | push edi ebp |
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457 | call cd_find_lfn |
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458 | pushfd |
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459 | cmp [DevErrorCode], 0 |
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460 | jz @f |
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461 | popfd |
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462 | pop ebp edi |
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463 | mov eax, 11 |
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464 | ret |
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465 | @@: |
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466 | popfd |
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467 | jnc @f |
||
468 | pop ebp edi |
||
469 | mov eax, ERROR_FILE_NOT_FOUND |
||
470 | ret |
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471 | @@: |
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472 | |||
473 | |||
474 | call cd_get_parameters_of_file_1 |
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475 | and dword [edi+4], 0 |
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476 | pop ebp |
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477 | pop ebp edi |
||
478 | xor eax, eax |
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479 | ret |
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480 | |||
481 | |||
94 | mario79 | 482 | ; |
483 | ; fs_CdExecute - LFN variant for executing from CD |
||
484 | ; |
||
485 | ; esi points to hd filename (e.g. 'dir1/name') |
||
486 | ; ebp points to full filename (e.g. '/hd0/1/dir1/name') |
||
487 | ; dword [ebx] = flags |
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488 | ; dword [ebx+4] = cmdline |
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489 | ; |
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490 | ; ret ebx,edx destroyed |
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491 | ; eax > 0 - PID, < 0 - error |
||
492 | ; |
||
493 | ;-------------------------------------------------------------- |
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494 | fs_CdExecute: |
||
495 | mov edx, [ebx] |
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496 | mov ebx, [ebx+4] |
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497 | test ebx, ebx |
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498 | jz @f |
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499 | add ebx, std_application_base_address |
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500 | @@: |
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501 | |||
502 | |||
503 | ; |
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504 | ; fs_CdExecute.flags - second entry |
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505 | ; |
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506 | ; esi points to floppy filename (kernel address) |
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507 | ; ebp points to full filename |
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508 | ; edx flags |
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509 | ; ebx cmdline (kernel address) |
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510 | ; |
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511 | ; ret eax > 0 - PID, < 0 - error |
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512 | ; |
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513 | ;-------------------------------------------------------------- |
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514 | |||
515 | |||
516 | cmp byte [esi], 0 |
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517 | jnz @f |
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518 | ; cannot execute root! |
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519 | mov eax, -ERROR_ACCESS_DENIED |
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520 | ret |
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521 | @@: |
||
522 | push edi |
||
523 | call cd_find_lfn |
||
524 | jnc .found |
||
525 | pop edi |
||
526 | mov eax, -ERROR_FILE_NOT_FOUND |
||
527 | cmp [DevErrorCode], 0 |
||
528 | jz @f |
||
529 | mov al, -11 |
||
530 | @@: |
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531 | ret |
||
532 | .found: |
||
533 | mov edi,[cd_current_pointer_of_input] |
||
534 | mov eax,[edi+2] |
||
535 | push 0 |
||
536 | push eax |
||
537 | push dword [edi+10] ; size |
||
538 | push .DoRead |
||
539 | call fs_execute |
||
540 | add esp, 16 |
||
541 | pop edi |
||
542 | ret |
||
543 | |||
544 | |||
545 | ; read next block |
||
546 | ; in: eax->parameters, edi->buffer |
||
547 | ; out: eax = error code |
||
548 | pushad |
||
549 | cmp dword [eax], 0 ; file size |
||
550 | jz .eof |
||
551 | cmp [eax+8],dword 0 |
||
552 | jne @f |
||
553 | mov ecx,[eax+4] |
||
554 | inc dword [eax+4] |
||
555 | mov [CDSectorAddress],ecx |
||
556 | mov [CDDataBuf_pointer],CDDataBuf ;edi |
||
557 | call ReadCDWRetr |
||
558 | cmp [DevErrorCode], 0 |
||
559 | jnz .err |
||
560 | @@: |
||
561 | push esi edi ecx |
||
562 | mov esi,512 |
||
563 | imul esi,[eax+8] |
||
564 | add esi,CDDataBuf |
||
565 | mov ecx,512/4 |
||
566 | cld |
||
567 | rep movsd |
||
568 | pop ecx edi esi |
||
569 | |||
570 | |||
571 | mov ecx, [eax] |
||
572 | sub ecx, 512 |
||
573 | jae @f |
||
574 | lea edi, [edi+ecx+512] |
||
575 | neg ecx |
||
576 | push eax |
||
577 | xor eax, eax |
||
578 | rep stosb |
||
579 | pop eax |
||
580 | @@: |
||
581 | mov [eax], ecx |
||
582 | mov edx, [eax+8] |
||
583 | inc edx |
||
584 | cmp edx, 4 ; 2048/512=4 |
||
585 | jb @f |
||
586 | xor edx, edx |
||
587 | @@: |
||
588 | mov [eax+8], edx |
||
589 | popad |
||
590 | xor eax, eax |
||
591 | ret |
||
592 | .eof: |
||
593 | popad |
||
594 | mov eax, 6 |
||
595 | ret |
||
596 | .err: |
||
597 | popad |
||
598 | mov eax, 11 |
||
599 | ret |
||
600 | |||
601 | |||
87 | mario79 | 602 | ; in: esi->name |
603 | ; out: CF=1 - file not found |
||
604 | ; else CF=0 and [cd_current_pointer_of_input] direntry |
||
605 | push eax esi |
||
606 | ; 16 сектор начало набора дескрипторов томов |
||
607 | mov [CDSectorAddress],dword 15 |
||
608 | .start: |
||
609 | inc dword [CDSectorAddress] |
||
610 | mov [CDDataBuf_pointer],CDDataBuf |
||
611 | call ReadCDWRetr |
||
612 | cmp [DevErrorCode],0 |
||
613 | jne .access_denied |
||
614 | ; проверка на вшивость |
||
615 | cmp [CDDataBuf+1],dword 'CD00' |
||
616 | jne .access_denied |
||
617 | cmp [CDDataBuf+5],byte '1' |
||
618 | jne .access_denied |
||
619 | ; сектор является терминатором набор дескрипторов томов? |
||
620 | cmp [CDDataBuf],byte 0xff |
||
621 | je .access_denied |
||
622 | ; сектор является дополнительным и улучшенным дескриптором тома? |
||
623 | cmp [CDDataBuf],byte 0x2 |
||
624 | jne .start |
||
625 | ; сектор является дополнительным дескриптором тома? |
||
626 | cmp [CDDataBuf+6],byte 0x1 |
||
627 | jne .start |
||
628 | ; параметры root директрории |
||
629 | mov eax,[CDDataBuf+0x9c+2] ; начало root директрории |
||
630 | mov [CDSectorAddress],eax |
||
631 | mov eax,[CDDataBuf+0x9c+10] ; размер root директрории |
||
632 | cmp byte [esi], 0 |
||
633 | jnz @f |
||
634 | mov [cd_current_pointer_of_input],CDDataBuf+0x9c |
||
635 | jmp .done |
||
636 | @@: |
||
637 | ; начинаем поиск |
||
638 | .mainloop: |
||
639 | dec dword [CDSectorAddress] |
||
640 | .read_to_buffer: |
||
641 | inc dword [CDSectorAddress] |
||
642 | mov [CDDataBuf_pointer],CDDataBuf |
||
643 | call ReadCDWRetr ; читаем сектор директории |
||
644 | cmp [DevErrorCode],0 |
||
645 | jne .access_denied |
||
646 | call cd_find_name_in_buffer |
||
647 | jnc .found |
||
648 | sub eax,2048 |
||
649 | ; директория закончилась? |
||
650 | cmp eax,0 |
||
651 | jg .read_to_buffer |
||
652 | ; нет искомого элемента цепочки |
||
653 | .access_denied: |
||
654 | pop esi eax |
||
655 | stc |
||
656 | ret |
||
657 | ; искомый элемент цепочки найден |
||
658 | .found: |
||
659 | ; конец пути файла |
||
660 | cmp byte [esi-1], 0 |
||
94 | mario79 | 661 | jz .done |
87 | mario79 | 662 | mov eax,[cd_current_pointer_of_input] |
663 | add eax,2 |
||
664 | mov eax,[eax] |
||
665 | mov [CDSectorAddress],eax ; начало директории |
||
666 | add eax,8 |
||
667 | mov eax,[eax] ; размер директории |
||
668 | jmp .mainloop |
||
669 | ; указатель файла найден |
||
670 | .done: |
||
671 | pop esi eax |
||
672 | clc |
||
673 | ret |
||
674 | |||
675 | |||
676 | mov [cd_current_pointer_of_input_2],CDDataBuf |
||
677 | .start: |
||
678 | call cd_get_name |
||
679 | jc .not_found |
||
680 | call cd_compare_name |
||
681 | jc .start |
||
682 | .found: |
||
683 | clc |
||
684 | ret |
||
685 | .not_found: |
||
686 | stc |
||
687 | ret |
||
688 | |||
689 | |||
690 | push eax |
||
691 | mov ebp,[cd_current_pointer_of_input_2] |
||
692 | mov [cd_current_pointer_of_input],ebp |
||
693 | mov eax,[ebp] |
||
694 | cmp eax,0 ; входы закончились? |
||
695 | je .next_sector |
||
696 | cmp ebp,CDDataBuf+2048 ; буфер закончился? |
||
697 | jae .next_sector |
||
698 | movzx eax, byte [ebp] |
||
699 | add [cd_current_pointer_of_input_2],eax ; следующий вход каталога |
||
700 | add ebp,33 ; указатель установлен на начало имени |
||
701 | pop eax |
||
702 | clc |
||
703 | ret |
||
704 | .next_sector: |
||
705 | pop eax |
||
706 | stc |
||
707 | ret |
||
708 | |||
709 | |||
710 | ; compares ASCIIZ-names, case-insensitive (cp866 encoding) |
||
711 | ; in: esi->name, ebp->name |
||
712 | ; out: if names match: ZF=1 and esi->next component of name |
||
713 | ; else: ZF=0, esi is not changed |
||
714 | ; destroys eax |
||
715 | push esi eax edi |
||
716 | mov edi,ebp |
||
717 | .loop: |
||
718 | cld |
||
719 | lodsb |
||
720 | push ax |
||
721 | call char_toupper |
||
722 | call ansi2uni_char |
||
723 | xchg ah,al |
||
724 | cld |
||
725 | scasw |
||
726 | pop ax |
||
727 | je .coincides |
||
728 | call char_todown |
||
729 | call ansi2uni_char |
||
730 | xchg ah,al |
||
731 | cld |
||
732 | sub edi,2 |
||
733 | scasw |
||
734 | jne .name_not_coincide |
||
735 | .coincides: |
||
736 | cmp [esi],byte '/' ; разделитель пути, конец имени текущего элемента |
||
737 | je .done |
||
738 | cmp [esi],byte 0 ; разделитель пути, конец имени текущего элемента |
||
739 | je .done |
||
740 | jmp .loop |
||
741 | .name_not_coincide: |
||
742 | pop edi eax esi |
||
743 | stc |
||
744 | ret |
||
745 | .done: |
||
746 | ; проверка конца файла |
||
747 | cmp [edi],word 3B00h ; сепаратор конца файла ';' |
||
748 | je .done_1 |
||
749 | ; проверка для файлов не заканчивающихся сепаратором |
||
750 | movzx eax,byte [ebp-33] |
||
751 | add eax,ebp |
||
752 | sub eax,34 |
||
753 | cmp edi,eax |
||
754 | je .done_1 |
||
755 | ; проверка конца папки |
||
756 | movzx eax,byte [ebp-1] |
||
757 | add eax,ebp |
||
758 | cmp edi,eax |
||
759 | jne .name_not_coincide |
||
760 | .done_1: |
||
761 | pop edi eax |
||
762 | add esp,4 |
||
763 | inc esi |
||
764 | clc |
||
765 | ret |
||
766 | |||
767 | |||
768 | ; convert character to uppercase, using cp866 encoding |
||
769 | ; in: al=symbol |
||
770 | ; out: al=converted symbol |
||
771 | cmp al, 'A' |
||
772 | jb .ret |
||
773 | cmp al, 'Z' |
||
774 | jbe .az |
||
775 | cmp al, 'Ђ' |
||
776 | jb .ret |
||
777 | cmp al, 'ђ' |
||
778 | jb .rus1 |
||
779 | cmp al, 'џ' |
||
780 | ja .ret |
||
781 | ; 0x90-0x9F -> 0xE0-0xEF |
||
782 | add al, 'а'-'ђ' |
||
783 | .ret: |
||
784 | ret |
||
785 | .rus1: |
||
786 | ; 0x80-0x8F -> 0xA0-0xAF |
||
787 | .az: |
||
788 | add al, 0x20 |
||
789 | ret |
||
790 | |||
791 | |||
792 | ; convert UNICODE character in al to ANSI character in ax, using cp866 encoding |
||
793 | ; in: ax=UNICODE character |
||
794 | ; out: al=converted ANSI character |
||
795 | cmp ax, 0x80 |
||
796 | jb .ascii |
||
797 | cmp ax, 0x401 |
||
798 | jz .yo1 |
||
799 | cmp ax, 0x451 |
||
800 | jz .yo2 |
||
801 | cmp ax, 0x410 |
||
802 | jb .unk |
||
803 | cmp ax, 0x440 |
||
804 | jb .rus1 |
||
805 | cmp ax, 0x450 |
||
806 | jb .rus2 |
||
807 | .unk: |
||
808 | mov al, '_' |
||
809 | jmp .doit |
||
810 | .yo1: |
||
811 | mov al, 'р' |
||
812 | jmp .doit |
||
813 | .yo2: |
||
814 | mov al, 'с' |
||
815 | jmp .doit |
||
816 | .rus1: |
||
817 | ; 0x410-0x43F -> 0x80-0xAF |
||
818 | add al, 0x70 |
||
819 | jmp .doit |
||
820 | .rus2: |
||
821 | ; 0x440-0x44F -> 0xE0-0xEF |
||
822 | add al, 0xA0 |
||
823 | .ascii: |
||
824 | .doit: |
||
825 | ret>> |
||
826 |