Rev 154 | Rev 379 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
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 |
||
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+TASKDATA.pid] |
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115 | poddubny | 28 | mov [cd_status],eax |
87 | mario79 | 29 | pop eax |
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 | |||
364 | diamond | 67 | |
68 | cd_status dd 0 |
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87 | mario79 | 69 | endg |
364 | diamond | 70 | |
87 | mario79 | 71 | |
72 | ; |
||
73 | ; fs_CdRead - LFN variant for reading CD disk |
||
74 | ; |
||
75 | ; esi points to filename /dir1/dir2/.../dirn/file,0 |
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76 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
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77 | ; may be ebx=0 - start from first byte |
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78 | ; ecx number of bytes to read, 0+ |
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79 | ; edx mem location to return data |
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80 | ; |
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81 | ; ret ebx = bytes read or 0xffffffff file not found |
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82 | ; eax = 0 ok read or other = errormsg |
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83 | ; |
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84 | ;-------------------------------------------------------------- |
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85 | fs_CdRead: |
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86 | push edi |
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87 | cmp byte [esi], 0 |
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88 | jnz @f |
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89 | .noaccess: |
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90 | pop edi |
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91 | .noaccess_2: |
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92 | or ebx, -1 |
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93 | mov eax, ERROR_ACCESS_DENIED |
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94 | ret |
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95 | |||
96 | |||
97 | pop eax edx ecx edi |
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98 | jmp .noaccess_2 |
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99 | |||
100 | |||
101 | call cd_find_lfn |
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102 | jnc .found |
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103 | pop edi |
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104 | cmp [DevErrorCode],0 |
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105 | jne .noaccess_2 |
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106 | or ebx, -1 |
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107 | mov eax, ERROR_FILE_NOT_FOUND |
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108 | ret |
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109 | |||
110 | |||
111 | mov edi,[cd_current_pointer_of_input] |
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112 | test byte [edi+25],10b ; do not allow read directories |
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113 | jnz .noaccess |
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114 | test ebx, ebx |
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115 | jz .l1 |
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116 | cmp dword [ebx+4], 0 |
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117 | jz @f |
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118 | xor ebx, ebx |
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119 | .reteof: |
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120 | mov eax, 6 ; end of file |
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121 | pop edi |
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122 | ret |
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123 | @@: |
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124 | mov ebx, [ebx] |
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125 | .l1: |
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126 | push ecx edx |
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127 | push 0 |
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128 | mov eax, [edi+10] ; реальный размер файловой секции |
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129 | sub eax, ebx |
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130 | jb .eof |
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131 | cmp eax, ecx |
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132 | jae @f |
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133 | mov ecx, eax |
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134 | mov byte [esp], 6 |
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135 | @@: |
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136 | mov eax,[edi+2] |
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137 | mov [CDSectorAddress],eax |
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138 | ; now eax=cluster, ebx=position, ecx=count, edx=buffer for data |
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139 | .new_sector: |
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140 | test ecx, ecx |
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141 | jz .done |
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142 | sub ebx, 2048 |
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143 | jae .next |
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154 | diamond | 144 | add ebx, 2048 |
87 | mario79 | 145 | jnz .incomplete_sector |
146 | cmp ecx, 2048 |
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147 | jb .incomplete_sector |
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148 | ; we may read and memmove complete sector |
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149 | mov [CDDataBuf_pointer],edx |
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150 | call ReadCDWRetr ; читаем сектор файла |
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151 | cmp [DevErrorCode],0 |
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152 | jne .noaccess_3 |
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153 | add edx, 2048 |
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154 | sub ecx, 2048 |
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155 | .next: |
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154 | diamond | 156 | inc dword [CDSectorAddress] |
157 | jmp .new_sector |
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87 | mario79 | 158 | .incomplete_sector: |
159 | ; we must read and memmove incomplete sector |
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160 | mov [CDDataBuf_pointer],CDDataBuf |
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161 | call ReadCDWRetr ; читаем сектор файла |
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162 | cmp [DevErrorCode],0 |
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163 | jne .noaccess_3 |
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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 | lea esi, [CDDataBuf + ebx] |
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154 | diamond | 174 | cld |
87 | mario79 | 175 | rep movsb |
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 .next |
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154 | diamond | 182 | |
87 | mario79 | 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 |
||
188 | .eof: |
||
189 | mov ebx, edx |
||
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 | ; |
||
198 | ; esi points to filename /dir1/dir2/.../dirn/file,0 |
||
199 | ; ebx pointer to structure 32-bit number = first wanted block, 0+ |
||
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 |
||
204 | ; |
||
205 | ; ret ebx = blocks read or 0xffffffff folder not found |
||
206 | ; eax = 0 ok read or other = errormsg |
||
207 | ; |
||
208 | ;-------------------------------------------------------------- |
||
209 | fs_CdReadFolder: |
||
210 | push edi |
||
211 | call cd_find_lfn |
||
212 | jnc .found |
||
213 | pop edi |
||
214 | cmp [DevErrorCode], 0 |
||
364 | diamond | 215 | jne .noaccess_1 |
87 | mario79 | 216 | or ebx, -1 |
217 | mov eax, ERROR_FILE_NOT_FOUND |
||
218 | ret |
||
219 | .found: |
||
220 | mov edi, [cd_current_pointer_of_input] |
||
364 | diamond | 221 | test byte [edi+25], 10b ; do not allow read directories |
222 | jnz .found_dir |
||
87 | mario79 | 223 | pop edi |
224 | .noaccess_1: |
||
225 | or ebx, -1 |
||
226 | mov eax, ERROR_ACCESS_DENIED |
||
227 | ret |
||
228 | .found_dir: |
||
229 | mov eax, [edi+2] ; eax=cluster |
||
364 | diamond | 230 | mov [CDSectorAddress], eax |
231 | mov eax, [edi+10] ; размер директрории |
||
232 | .doit: |
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87 | mario79 | 233 | ; init header |
234 | push eax ecx |
||
235 | mov edi, edx |
||
236 | mov ecx, 32/4 |
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237 | xor eax, eax |
||
238 | rep stosd |
||
239 | pop ecx eax |
||
240 | mov byte [edx], 1 ; version |
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241 | mov [cd_mem_location], edx |
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364 | diamond | 242 | add [cd_mem_location], 32 |
243 | ; начинаем переброску БДВК в УСВК |
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87 | mario79 | 244 | ;.mainloop: |
245 | mov [cd_counter_block], dword 0 |
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364 | diamond | 246 | dec dword [CDSectorAddress] |
247 | push ecx |
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248 | .read_to_buffer: |
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87 | mario79 | 249 | inc dword [CDSectorAddress] |
364 | diamond | 250 | mov [CDDataBuf_pointer], CDDataBuf |
251 | call ReadCDWRetr ; читаем сектор директории |
||
252 | cmp [DevErrorCode], 0 |
||
253 | jne .noaccess_1 |
||
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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87 | mario79 | 257 | ja .read_to_buffer |
364 | diamond | 258 | mov edi, [cd_counter_block] |
259 | mov [edx+8], edi |
||
260 | mov edi, [ebx] |
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261 | sub [edx+4], edi |
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262 | xor eax, eax |
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263 | dec ecx |
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264 | js @f |
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265 | mov al, ERROR_END_OF_FILE |
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266 | @@: |
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267 | pop ecx edi |
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87 | mario79 | 268 | mov ebx, [edx+4] |
89 | diamond | 269 | ret |
364 | diamond | 270 | |
271 | |||
87 | mario79 | 272 | mov [cd_current_pointer_of_input_2],CDDataBuf |
273 | push eax esi edi edx |
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274 | .get_names_from_buffer_1: |
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275 | call cd_get_name |
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276 | jc .end_buffer |
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277 | inc dword [cd_counter_block] |
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278 | mov eax,[cd_counter_block] |
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279 | cmp [ebx],eax |
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280 | jae .get_names_from_buffer_1 |
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281 | test ecx, ecx |
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282 | jz .get_names_from_buffer_1 |
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283 | mov edi,[cd_counter_block] |
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284 | mov [edx+4],edi |
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285 | dec ecx |
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286 | mov esi,ebp |
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287 | mov edi,[cd_mem_location] |
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288 | add edi,40 |
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289 | test dword [ebx+4], 1 ; 0=ANSI, 1=UNICODE |
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290 | jnz .unicode |
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291 | ; jmp .unicode |
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292 | .ansi: |
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293 | cmp [cd_counter_block],2 |
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294 | jbe .ansi_parent_directory |
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295 | cld |
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296 | lodsw |
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297 | xchg ah,al |
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298 | call uni2ansi_char |
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299 | cld |
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300 | stosb |
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301 | ; проверка конца файла |
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302 | mov ax,[esi] |
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96 | mario79 | 303 | cmp ax,word 3B00h ; сепаратор конца файла ';' |
304 | je .cd_get_parameters_of_file_1 |
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87 | mario79 | 305 | ; проверка для файлов не заканчивающихся сепаратором |
306 | movzx eax,byte [ebp-33] |
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307 | add eax,ebp |
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308 | sub eax,34 |
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309 | cmp esi,eax |
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310 | je .cd_get_parameters_of_file_1 |
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311 | ; проверка конца папки |
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312 | movzx eax,byte [ebp-1] |
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313 | add eax,ebp |
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314 | cmp esi,eax |
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315 | jb .ansi |
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316 | .cd_get_parameters_of_file_1: |
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317 | mov [edi],byte 0 |
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318 | call cd_get_parameters_of_file |
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90 | mario79 | 319 | add [cd_mem_location],304 |
87 | mario79 | 320 | jmp .get_names_from_buffer_1 |
321 | |||
322 | |||
323 | cmp [cd_counter_block],2 |
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324 | je @f |
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325 | mov [edi],byte '.' |
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326 | inc edi |
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327 | jmp .cd_get_parameters_of_file_1 |
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328 | @@: |
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329 | mov [edi],word '..' |
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330 | add edi,2 |
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331 | jmp .cd_get_parameters_of_file_1 |
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332 | |||
333 | |||
334 | cmp [cd_counter_block],2 |
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335 | jbe .unicode_parent_directory |
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336 | cld |
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337 | movsw |
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338 | ; проверка конца файла |
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339 | mov ax,[esi] |
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340 | cmp ax,word 3B00h ; сепаратор конца файла ';' |
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341 | je .cd_get_parameters_of_file_2 |
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342 | ; проверка для файлов не заканчивающихся сепаратором |
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343 | movzx eax,byte [ebp-33] |
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344 | add eax,ebp |
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345 | sub eax,34 |
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346 | cmp esi,eax |
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347 | je .cd_get_parameters_of_file_2 |
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348 | ; проверка конца папки |
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349 | movzx eax,byte [ebp-1] |
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350 | add eax,ebp |
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351 | cmp esi,eax |
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352 | jb .unicode |
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353 | .cd_get_parameters_of_file_2: |
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354 | mov [edi],word 0 |
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355 | call cd_get_parameters_of_file |
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90 | mario79 | 356 | add [cd_mem_location],560 |
87 | mario79 | 357 | jmp .get_names_from_buffer_1 |
358 | |||
359 | |||
360 | cmp [cd_counter_block],2 |
||
361 | je @f |
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362 | mov [edi],word 2E00h ; '.' |
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363 | add edi,2 |
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364 | jmp .cd_get_parameters_of_file_2 |
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365 | @@: |
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366 | mov [edi],dword 2E002E00h ; '..' |
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367 | add edi,4 |
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368 | jmp .cd_get_parameters_of_file_2 |
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369 | |||
370 | |||
90 | mario79 | 371 | pop edx edi esi eax |
372 | ret |
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373 | |||
374 | |||
375 | mov edi,[cd_mem_location] |
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87 | mario79 | 376 | cd_get_parameters_of_file_1: |
90 | mario79 | 377 | ; получаем атрибуты файла |
87 | mario79 | 378 | xor eax,eax |
379 | ; файл не архивировался |
||
380 | inc al |
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381 | shl eax,1 |
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382 | ; это каталог? |
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383 | test [ebp-8],byte 2 |
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384 | jz .file |
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385 | inc al |
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386 | .file: |
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387 | ; метка тома не как в FAT, в этом виде отсутсвует |
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388 | ; файл не является системным |
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389 | shl eax,3 |
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390 | ; файл является скрытым? (атрибут существование) |
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391 | test [ebp-8],byte 1 |
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392 | jz .hidden |
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393 | inc al |
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394 | .hidden: |
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395 | shl eax,1 |
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396 | ; файл всегда только для чтения, так как это CD |
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397 | inc al |
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398 | mov [edi],eax |
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399 | ; получаем время для файла |
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400 | ;час |
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401 | movzx eax,byte [ebp-12] |
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402 | shl eax,8 |
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403 | ;минута |
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404 | mov al,[ebp-11] |
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405 | shl eax,8 |
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406 | ;секунда |
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407 | mov al,[ebp-10] |
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408 | ;время создания файла |
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409 | mov [edi+8],eax |
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410 | ;время последнего доступа |
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411 | mov [edi+16],eax |
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412 | ;время последней записи |
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413 | mov [edi+24],eax |
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414 | ; получаем дату для файла |
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415 | ;год |
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416 | movzx eax,byte [ebp-15] |
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417 | add eax,1900 |
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418 | shl eax,8 |
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419 | ;месяц |
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420 | mov al,[ebp-14] |
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421 | shl eax,8 |
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422 | ;день |
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423 | mov al,[ebp-13] |
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424 | ;дата создания файла |
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425 | mov [edi+12],eax |
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426 | ;время последнего доступа |
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427 | mov [edi+20],eax |
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428 | ;время последней записи |
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429 | mov [edi+28],eax |
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430 | ; получаем тип данных имени |
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431 | xor eax,eax |
||
432 | test dword [ebx+4], 1 ; 0=ANSI, 1=UNICODE |
||
433 | jnz .unicode_1 |
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434 | mov [edi+4],eax |
||
435 | jmp @f |
||
436 | .unicode_1: |
||
437 | inc eax |
||
438 | mov [edi+4],eax |
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439 | @@: |
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440 | ; получаем размер файла в байтах |
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441 | xor eax,eax |
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442 | mov [edi+32+4],eax |
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443 | mov eax,[ebp-23] |
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444 | mov [edi+32],eax |
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445 | ret |
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446 | |||
447 | |||
90 | mario79 | 448 | ; |
449 | ; fs_CdGetFileInfo - LFN variant for CD |
||
450 | ; get file/directory attributes structure |
||
451 | ; |
||
452 | ;---------------------------------------------------------------- |
||
453 | fs_CdGetFileInfo: |
||
454 | cmp byte [esi], 0 |
||
455 | jnz @f |
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456 | mov eax, 2 |
||
457 | ret |
||
458 | @@: |
||
459 | push edi ebp |
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460 | call cd_find_lfn |
||
461 | pushfd |
||
462 | cmp [DevErrorCode], 0 |
||
463 | jz @f |
||
464 | popfd |
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465 | pop ebp edi |
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466 | mov eax, 11 |
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467 | ret |
||
468 | @@: |
||
469 | popfd |
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470 | jnc @f |
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471 | pop ebp edi |
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472 | mov eax, ERROR_FILE_NOT_FOUND |
||
473 | ret |
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474 | @@: |
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475 | |||
476 | |||
477 | call cd_get_parameters_of_file_1 |
||
478 | and dword [edi+4], 0 |
||
479 | pop ebp edi |
||
480 | xor eax, eax |
||
481 | ret |
||
482 | |||
483 | |||
94 | mario79 | 484 | ; |
485 | ; fs_CdExecute - LFN variant for executing from CD |
||
486 | ; |
||
487 | ; esi points to hd filename (e.g. 'dir1/name') |
||
488 | ; ebp points to full filename (e.g. '/hd0/1/dir1/name') |
||
489 | ; dword [ebx] = flags |
||
490 | ; dword [ebx+4] = cmdline |
||
491 | ; |
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492 | ; ret ebx,edx destroyed |
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493 | ; eax > 0 - PID, < 0 - error |
||
494 | ; |
||
495 | ;-------------------------------------------------------------- |
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496 | fs_CdExecute: |
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497 | mov edx, [ebx] |
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498 | mov ebx, [ebx+4] |
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499 | test ebx, ebx |
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500 | jz @f |
||
501 | add ebx, std_application_base_address |
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502 | @@: |
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503 | |||
504 | |||
505 | ; |
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506 | ; fs_CdExecute.flags - second entry |
||
507 | ; |
||
508 | ; esi points to floppy filename (kernel address) |
||
509 | ; ebp points to full filename |
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510 | ; edx flags |
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511 | ; ebx cmdline (kernel address) |
||
512 | ; |
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513 | ; ret eax > 0 - PID, < 0 - error |
||
514 | ; |
||
515 | ;-------------------------------------------------------------- |
||
516 | |||
517 | |||
518 | cmp byte [esi], 0 |
||
519 | jnz @f |
||
520 | ; cannot execute root! |
||
521 | mov eax, -ERROR_ACCESS_DENIED |
||
522 | ret |
||
523 | @@: |
||
524 | push edi |
||
525 | call cd_find_lfn |
||
526 | jnc .found |
||
527 | pop edi |
||
528 | mov eax, -ERROR_FILE_NOT_FOUND |
||
529 | cmp [DevErrorCode], 0 |
||
530 | jz @f |
||
531 | mov al, -11 |
||
532 | @@: |
||
533 | ret |
||
534 | .found: |
||
535 | mov edi,[cd_current_pointer_of_input] |
||
536 | mov eax,[edi+2] |
||
537 | push 0 |
||
538 | push eax |
||
539 | push dword [edi+10] ; size |
||
540 | push .DoRead |
||
541 | call fs_execute |
||
542 | add esp, 16 |
||
543 | pop edi |
||
544 | ret |
||
545 | |||
546 | |||
547 | ; read next block |
||
548 | ; in: eax->parameters, edi->buffer |
||
549 | ; out: eax = error code |
||
550 | pushad |
||
551 | cmp dword [eax], 0 ; file size |
||
552 | jz .eof |
||
553 | cmp [eax+8],dword 0 |
||
554 | jne @f |
||
555 | mov ecx,[eax+4] |
||
556 | inc dword [eax+4] |
||
557 | mov [CDSectorAddress],ecx |
||
558 | mov [CDDataBuf_pointer],CDDataBuf ;edi |
||
559 | call ReadCDWRetr |
||
560 | cmp [DevErrorCode], 0 |
||
561 | jnz .err |
||
562 | @@: |
||
563 | push esi edi ecx |
||
564 | mov esi,512 |
||
565 | imul esi,[eax+8] |
||
566 | add esi,CDDataBuf |
||
567 | mov ecx,512/4 |
||
568 | cld |
||
569 | rep movsd |
||
570 | pop ecx edi esi |
||
571 | |||
572 | |||
573 | mov ecx, [eax] |
||
574 | sub ecx, 512 |
||
575 | jae @f |
||
576 | lea edi, [edi+ecx+512] |
||
577 | neg ecx |
||
578 | push eax |
||
579 | xor eax, eax |
||
580 | rep stosb |
||
581 | pop eax |
||
582 | @@: |
||
583 | mov [eax], ecx |
||
584 | mov edx, [eax+8] |
||
585 | inc edx |
||
586 | cmp edx, 4 ; 2048/512=4 |
||
587 | jb @f |
||
588 | xor edx, edx |
||
589 | @@: |
||
590 | mov [eax+8], edx |
||
591 | popad |
||
592 | xor eax, eax |
||
593 | ret |
||
594 | .eof: |
||
595 | popad |
||
596 | mov eax, 6 |
||
597 | ret |
||
598 | .err: |
||
599 | popad |
||
600 | mov eax, 11 |
||
601 | ret |
||
602 | |||
603 | |||
87 | mario79 | 604 | ; in: esi->name |
605 | ; out: CF=1 - file not found |
||
606 | ; else CF=0 and [cd_current_pointer_of_input] direntry |
||
607 | push eax esi |
||
608 | ; 16 сектор начало набора дескрипторов томов |
||
609 | mov [CDSectorAddress],dword 15 |
||
610 | .start: |
||
611 | inc dword [CDSectorAddress] |
||
612 | mov [CDDataBuf_pointer],CDDataBuf |
||
613 | call ReadCDWRetr |
||
614 | cmp [DevErrorCode],0 |
||
615 | jne .access_denied |
||
616 | ; проверка на вшивость |
||
617 | cmp [CDDataBuf+1],dword 'CD00' |
||
618 | jne .access_denied |
||
619 | cmp [CDDataBuf+5],byte '1' |
||
620 | jne .access_denied |
||
621 | ; сектор является терминатором набор дескрипторов томов? |
||
622 | cmp [CDDataBuf],byte 0xff |
||
623 | je .access_denied |
||
624 | ; сектор является дополнительным и улучшенным дескриптором тома? |
||
625 | cmp [CDDataBuf],byte 0x2 |
||
626 | jne .start |
||
627 | ; сектор является дополнительным дескриптором тома? |
||
628 | cmp [CDDataBuf+6],byte 0x1 |
||
629 | jne .start |
||
630 | ; параметры root директрории |
||
631 | mov eax,[CDDataBuf+0x9c+2] ; начало root директрории |
||
632 | mov [CDSectorAddress],eax |
||
633 | mov eax,[CDDataBuf+0x9c+10] ; размер root директрории |
||
634 | cmp byte [esi], 0 |
||
635 | jnz @f |
||
636 | mov [cd_current_pointer_of_input],CDDataBuf+0x9c |
||
637 | jmp .done |
||
638 | @@: |
||
639 | ; начинаем поиск |
||
640 | .mainloop: |
||
641 | dec dword [CDSectorAddress] |
||
642 | .read_to_buffer: |
||
643 | inc dword [CDSectorAddress] |
||
644 | mov [CDDataBuf_pointer],CDDataBuf |
||
645 | call ReadCDWRetr ; читаем сектор директории |
||
646 | cmp [DevErrorCode],0 |
||
647 | jne .access_denied |
||
648 | call cd_find_name_in_buffer |
||
649 | jnc .found |
||
650 | sub eax,2048 |
||
651 | ; директория закончилась? |
||
652 | cmp eax,0 |
||
653 | ja .read_to_buffer |
||
99 | mario79 | 654 | ; нет искомого элемента цепочки |
87 | mario79 | 655 | .access_denied: |
656 | pop esi eax |
||
657 | stc |
||
658 | ret |
||
659 | ; искомый элемент цепочки найден |
||
660 | .found: |
||
661 | ; конец пути файла |
||
662 | cmp byte [esi-1], 0 |
||
94 | mario79 | 663 | jz .done |
87 | mario79 | 664 | mov eax,[cd_current_pointer_of_input] |
665 | push dword [eax+2] |
||
364 | diamond | 666 | pop dword [CDSectorAddress] ; начало директории |
667 | mov eax,[eax+2+8] ; размер директории |
||
668 | jmp .mainloop |
||
87 | mario79 | 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_todown |
||
99 | mario79 | 722 | call ansi2uni_char |
87 | mario79 | 723 | xchg ah,al |
724 | cld |
||
725 | scasw |
||
726 | pop ax |
||
727 | je .coincides |
||
728 | call char_toupper |
||
99 | mario79 | 729 | call ansi2uni_char |
87 | mario79 | 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 |