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