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Rev | Author | Line No. | Line |
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425 | victor | 1 | $Revision: 465 $ |
431 | serge | 2 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
3 | ;; ;; |
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4 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
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5 | ;; Distributed under terms of the GNU General Public License ;; |
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6 | ;; ;; |
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7 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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94 | mario79 | 8 | |
87 | mario79 | 9 | uglobal |
10 | cd_current_pointer_of_input dd 0 |
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11 | cd_current_pointer_of_input_2 dd 0 |
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12 | cd_mem_location dd 0 |
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13 | cd_counter_block dd 0 |
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95 | mario79 | 14 | IDE_Channel_1 db 0 |
15 | IDE_Channel_2 db 0 |
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87 | mario79 | 16 | endg |
17 | |||
18 | CDDataBuf equ 0x7000 |
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19 | |||
20 | reserve_cd: |
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21 | |||
22 | cli |
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23 | cmp [cd_status],0 |
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24 | je reserve_ok2 |
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25 | |||
26 | sti |
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27 | call change_task |
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95 | mario79 | 28 | jmp reserve_cd |
87 | mario79 | 29 | |
30 | reserve_ok2: |
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31 | |||
32 | push eax |
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379 | serge | 33 | mov eax,[CURRENT_TASK] |
87 | mario79 | 34 | shl eax,5 |
379 | serge | 35 | mov eax,[eax+CURRENT_TASK+TASKDATA.pid] |
87 | mario79 | 36 | mov [cd_status],eax |
37 | pop eax |
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38 | sti |
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39 | ret |
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95 | mario79 | 40 | |
41 | reserve_cd_channel: |
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42 | cmp [ChannelNumber],1 |
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43 | jne .IDE_Channel_2 |
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44 | .IDE_Channel_1: |
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45 | cli |
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46 | cmp [IDE_Channel_1],0 |
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47 | je .reserve_ok_1 |
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48 | sti |
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49 | call change_task |
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50 | jmp .IDE_Channel_1 |
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51 | .IDE_Channel_2: |
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52 | cli |
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53 | cmp [IDE_Channel_2],0 |
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54 | je .reserve_ok_2 |
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55 | sti |
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56 | call change_task |
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57 | jmp .IDE_Channel_1 |
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58 | .reserve_ok_1: |
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59 | mov [IDE_Channel_1],1 |
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60 | ret |
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61 | .reserve_ok_2: |
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62 | mov [IDE_Channel_2],1 |
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63 | ret |
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64 | |||
65 | free_cd_channel: |
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66 | cmp [ChannelNumber],1 |
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67 | jne .IDE_Channel_2 |
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68 | .IDE_Channel_1: |
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379 | serge | 69 | mov [IDE_Channel_1],0 |
95 | mario79 | 70 | ret |
71 | .IDE_Channel_2: |
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72 | mov [IDE_Channel_2],0 |
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73 | ret |
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364 | diamond | 74 | |
379 | serge | 75 | uglobal |
87 | mario79 | 76 | cd_status dd 0 |
364 | diamond | 77 | endg |
87 | mario79 | 78 | |
79 | ;---------------------------------------------------------------- |
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80 | ; |
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81 | ; fs_CdRead - LFN variant for reading CD disk |
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82 | ; |
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83 | ; esi points to filename /dir1/dir2/.../dirn/file,0 |
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84 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
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85 | ; may be ebx=0 - start from first byte |
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86 | ; ecx number of bytes to read, 0+ |
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87 | ; edx mem location to return data |
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88 | ; |
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89 | ; ret ebx = bytes read or 0xffffffff file not found |
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90 | ; eax = 0 ok read or other = errormsg |
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91 | ; |
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92 | ;-------------------------------------------------------------- |
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93 | fs_CdRead: |
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94 | push edi |
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95 | cmp byte [esi], 0 |
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96 | jnz @f |
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97 | .noaccess: |
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98 | pop edi |
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99 | .noaccess_2: |
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100 | or ebx, -1 |
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101 | mov eax, ERROR_ACCESS_DENIED |
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102 | ret |
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379 | serge | 103 | |
87 | mario79 | 104 | .noaccess_3: |
105 | pop eax edx ecx edi |
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106 | jmp .noaccess_2 |
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107 | |||
108 | @@: |
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109 | call cd_find_lfn |
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110 | jnc .found |
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111 | pop edi |
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112 | cmp [DevErrorCode],0 |
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113 | jne .noaccess_2 |
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114 | or ebx, -1 |
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115 | mov eax, ERROR_FILE_NOT_FOUND |
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116 | ret |
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117 | |||
118 | .found: |
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119 | mov edi,[cd_current_pointer_of_input] |
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120 | test byte [edi+25],10b ; do not allow read directories |
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121 | jnz .noaccess |
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122 | test ebx, ebx |
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123 | jz .l1 |
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124 | cmp dword [ebx+4], 0 |
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125 | jz @f |
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126 | xor ebx, ebx |
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127 | .reteof: |
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128 | mov eax, 6 ; end of file |
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129 | pop edi |
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130 | ret |
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131 | @@: |
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132 | mov ebx, [ebx] |
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133 | .l1: |
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134 | push ecx edx |
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135 | push 0 |
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136 | mov eax, [edi+10] ; реальный размер файловой секции |
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137 | sub eax, ebx |
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138 | jb .eof |
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139 | cmp eax, ecx |
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140 | jae @f |
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141 | mov ecx, eax |
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142 | mov byte [esp], 6 |
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143 | @@: |
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144 | mov eax,[edi+2] |
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145 | mov [CDSectorAddress],eax |
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146 | ; now eax=cluster, ebx=position, ecx=count, edx=buffer for data |
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147 | .new_sector: |
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148 | test ecx, ecx |
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149 | jz .done |
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150 | sub ebx, 2048 |
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154 | diamond | 151 | jae .next |
87 | mario79 | 152 | add ebx, 2048 |
153 | jnz .incomplete_sector |
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154 | cmp ecx, 2048 |
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155 | jb .incomplete_sector |
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156 | ; we may read and memmove complete sector |
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157 | mov [CDDataBuf_pointer],edx |
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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 | add edx, 2048 |
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162 | sub ecx, 2048 |
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154 | diamond | 163 | .next: |
164 | inc dword [CDSectorAddress] |
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87 | mario79 | 165 | jmp .new_sector |
166 | .incomplete_sector: |
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167 | ; we must read and memmove incomplete sector |
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168 | mov [CDDataBuf_pointer],CDDataBuf |
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169 | call ReadCDWRetr ; читаем сектор файла |
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170 | cmp [DevErrorCode],0 |
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379 | serge | 171 | jne .noaccess_3 |
87 | mario79 | 172 | push ecx |
173 | add ecx, ebx |
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174 | cmp ecx, 2048 |
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175 | jbe @f |
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176 | mov ecx, 2048 |
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177 | @@: |
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178 | sub ecx, ebx |
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179 | push edi esi ecx |
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180 | mov edi,edx |
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154 | diamond | 181 | lea esi, [CDDataBuf + ebx] |
87 | mario79 | 182 | cld |
183 | rep movsb |
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184 | pop ecx esi edi |
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185 | add edx, ecx |
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186 | sub [esp], ecx |
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187 | pop ecx |
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188 | xor ebx, ebx |
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154 | diamond | 189 | jmp .next |
379 | serge | 190 | |
87 | mario79 | 191 | .done: |
192 | mov ebx, edx |
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193 | pop eax edx ecx edi |
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194 | sub ebx, edx |
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195 | ret |
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196 | .eof: |
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197 | mov ebx, edx |
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198 | pop eax edx ecx |
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199 | sub ebx, edx |
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200 | jmp .reteof |
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201 | |||
202 | ;---------------------------------------------------------------- |
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203 | ; |
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204 | ; fs_CdReadFolder - LFN variant for reading CD disk folder |
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205 | ; |
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206 | ; esi points to filename /dir1/dir2/.../dirn/file,0 |
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207 | ; ebx pointer to structure 32-bit number = first wanted block, 0+ |
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208 | ; & flags (bitfields) |
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209 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
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210 | ; ecx number of blocks to read, 0+ |
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211 | ; edx mem location to return data |
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212 | ; |
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213 | ; ret ebx = blocks read or 0xffffffff folder not found |
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214 | ; eax = 0 ok read or other = errormsg |
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215 | ; |
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216 | ;-------------------------------------------------------------- |
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217 | fs_CdReadFolder: |
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218 | push edi |
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219 | call cd_find_lfn |
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220 | jnc .found |
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221 | pop edi |
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364 | diamond | 222 | cmp [DevErrorCode], 0 |
87 | mario79 | 223 | jne .noaccess_1 |
224 | or ebx, -1 |
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225 | mov eax, ERROR_FILE_NOT_FOUND |
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226 | ret |
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227 | .found: |
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364 | diamond | 228 | mov edi, [cd_current_pointer_of_input] |
229 | test byte [edi+25], 10b ; do not allow read directories |
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87 | mario79 | 230 | jnz .found_dir |
231 | pop edi |
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232 | .noaccess_1: |
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233 | or ebx, -1 |
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234 | mov eax, ERROR_ACCESS_DENIED |
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235 | ret |
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236 | .found_dir: |
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364 | diamond | 237 | mov eax, [edi+2] ; eax=cluster |
238 | mov [CDSectorAddress], eax |
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239 | mov eax, [edi+10] ; размер директрории |
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87 | mario79 | 240 | .doit: |
241 | ; init header |
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242 | push eax ecx |
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243 | mov edi, edx |
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244 | mov ecx, 32/4 |
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245 | xor eax, eax |
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246 | rep stosd |
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247 | pop ecx eax |
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248 | mov byte [edx], 1 ; version |
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364 | diamond | 249 | mov [cd_mem_location], edx |
379 | serge | 250 | add [cd_mem_location], 32 |
87 | mario79 | 251 | ; начинаем переброску БДВК в УСВК |
252 | ;.mainloop: |
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364 | diamond | 253 | mov [cd_counter_block], dword 0 |
254 | dec dword [CDSectorAddress] |
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255 | push ecx |
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87 | mario79 | 256 | .read_to_buffer: |
364 | diamond | 257 | inc dword [CDSectorAddress] |
258 | mov [CDDataBuf_pointer], CDDataBuf |
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259 | call ReadCDWRetr ; читаем сектор директории |
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260 | cmp [DevErrorCode], 0 |
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261 | jne .noaccess_1 |
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262 | call .get_names_from_buffer |
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263 | sub eax,2048 |
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87 | mario79 | 264 | ; директория закончилась? |
364 | diamond | 265 | ja .read_to_buffer |
266 | mov edi, [cd_counter_block] |
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267 | mov [edx+8], edi |
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268 | mov edi, [ebx] |
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269 | sub [edx+4], edi |
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270 | xor eax, eax |
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271 | dec ecx |
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272 | js @f |
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273 | mov al, ERROR_END_OF_FILE |
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274 | @@: |
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87 | mario79 | 275 | pop ecx edi |
89 | diamond | 276 | mov ebx, [edx+4] |
364 | diamond | 277 | ret |
278 | |||
87 | mario79 | 279 | .get_names_from_buffer: |
280 | mov [cd_current_pointer_of_input_2],CDDataBuf |
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281 | push eax esi edi edx |
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282 | .get_names_from_buffer_1: |
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283 | call cd_get_name |
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284 | jc .end_buffer |
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285 | inc dword [cd_counter_block] |
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286 | mov eax,[cd_counter_block] |
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287 | cmp [ebx],eax |
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288 | jae .get_names_from_buffer_1 |
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289 | test ecx, ecx |
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290 | jz .get_names_from_buffer_1 |
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291 | mov edi,[cd_counter_block] |
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379 | serge | 292 | mov [edx+4],edi |
87 | mario79 | 293 | dec ecx |
294 | mov esi,ebp |
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295 | mov edi,[cd_mem_location] |
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296 | add edi,40 |
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297 | test dword [ebx+4], 1 ; 0=ANSI, 1=UNICODE |
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298 | jnz .unicode |
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299 | ; jmp .unicode |
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300 | .ansi: |
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301 | cmp [cd_counter_block],2 |
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302 | jbe .ansi_parent_directory |
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303 | cld |
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304 | lodsw |
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305 | xchg ah,al |
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306 | call uni2ansi_char |
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307 | cld |
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308 | stosb |
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309 | ; проверка конца файла |
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96 | mario79 | 310 | mov ax,[esi] |
311 | cmp ax,word 3B00h ; сепаратор конца файла ';' |
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87 | mario79 | 312 | je .cd_get_parameters_of_file_1 |
313 | ; проверка для файлов не заканчивающихся сепаратором |
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314 | movzx eax,byte [ebp-33] |
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315 | add eax,ebp |
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316 | sub eax,34 |
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317 | cmp esi,eax |
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318 | je .cd_get_parameters_of_file_1 |
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319 | ; проверка конца папки |
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320 | movzx eax,byte [ebp-1] |
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321 | add eax,ebp |
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322 | cmp esi,eax |
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323 | jb .ansi |
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324 | .cd_get_parameters_of_file_1: |
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325 | mov [edi],byte 0 |
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90 | mario79 | 326 | call cd_get_parameters_of_file |
87 | mario79 | 327 | add [cd_mem_location],304 |
328 | jmp .get_names_from_buffer_1 |
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329 | |||
330 | .ansi_parent_directory: |
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331 | cmp [cd_counter_block],2 |
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332 | je @f |
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333 | mov [edi],byte '.' |
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334 | inc edi |
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335 | jmp .cd_get_parameters_of_file_1 |
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336 | @@: |
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337 | mov [edi],word '..' |
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338 | add edi,2 |
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339 | jmp .cd_get_parameters_of_file_1 |
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340 | |||
341 | .unicode: |
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342 | cmp [cd_counter_block],2 |
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343 | jbe .unicode_parent_directory |
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344 | cld |
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345 | movsw |
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346 | ; проверка конца файла |
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347 | mov ax,[esi] |
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348 | cmp ax,word 3B00h ; сепаратор конца файла ';' |
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349 | je .cd_get_parameters_of_file_2 |
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350 | ; проверка для файлов не заканчивающихся сепаратором |
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351 | movzx eax,byte [ebp-33] |
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352 | add eax,ebp |
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353 | sub eax,34 |
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354 | cmp esi,eax |
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355 | je .cd_get_parameters_of_file_2 |
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356 | ; проверка конца папки |
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357 | movzx eax,byte [ebp-1] |
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358 | add eax,ebp |
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359 | cmp esi,eax |
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360 | jb .unicode |
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361 | .cd_get_parameters_of_file_2: |
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362 | mov [edi],word 0 |
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90 | mario79 | 363 | call cd_get_parameters_of_file |
87 | mario79 | 364 | add [cd_mem_location],560 |
365 | jmp .get_names_from_buffer_1 |
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366 | |||
367 | .unicode_parent_directory: |
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368 | cmp [cd_counter_block],2 |
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369 | je @f |
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370 | mov [edi],word 2E00h ; '.' |
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371 | add edi,2 |
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372 | jmp .cd_get_parameters_of_file_2 |
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373 | @@: |
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374 | mov [edi],dword 2E002E00h ; '..' |
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375 | add edi,4 |
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376 | jmp .cd_get_parameters_of_file_2 |
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377 | |||
90 | mario79 | 378 | .end_buffer: |
379 | pop edx edi esi eax |
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380 | ret |
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381 | |||
382 | cd_get_parameters_of_file: |
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87 | mario79 | 383 | mov edi,[cd_mem_location] |
90 | mario79 | 384 | cd_get_parameters_of_file_1: |
87 | mario79 | 385 | ; получаем атрибуты файла |
386 | xor eax,eax |
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379 | serge | 387 | ; файл не архивировалс |
87 | mario79 | 388 | inc al |
389 | shl eax,1 |
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390 | ; это каталог? |
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391 | test [ebp-8],byte 2 |
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392 | jz .file |
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393 | inc al |
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394 | .file: |
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395 | ; метка тома не как в FAT, в этом виде отсутсвует |
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396 | ; файл не является системным |
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397 | shl eax,3 |
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398 | ; файл является скрытым? (атрибут существование) |
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399 | test [ebp-8],byte 1 |
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400 | jz .hidden |
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401 | inc al |
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402 | .hidden: |
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403 | shl eax,1 |
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404 | ; файл всегда только для чтения, так как это CD |
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405 | inc al |
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406 | mov [edi],eax |
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407 | ; получаем время для файла |
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408 | ;час |
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409 | movzx eax,byte [ebp-12] |
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410 | shl eax,8 |
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411 | ;минута |
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412 | mov al,[ebp-11] |
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413 | shl eax,8 |
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414 | ;секунда |
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415 | mov al,[ebp-10] |
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416 | ;время создания файла |
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417 | mov [edi+8],eax |
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418 | ;время последнего доступа |
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419 | mov [edi+16],eax |
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420 | ;время последней записи |
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421 | mov [edi+24],eax |
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422 | ; получаем дату для файла |
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423 | ;год |
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424 | movzx eax,byte [ebp-15] |
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425 | add eax,1900 |
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426 | shl eax,8 |
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427 | ;месяц |
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428 | mov al,[ebp-14] |
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429 | shl eax,8 |
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430 | ;день |
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431 | mov al,[ebp-13] |
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432 | ;дата создания файла |
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433 | mov [edi+12],eax |
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434 | ;время последнего доступа |
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435 | mov [edi+20],eax |
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436 | ;время последней записи |
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437 | mov [edi+28],eax |
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438 | ; получаем тип данных имени |
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439 | xor eax,eax |
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440 | test dword [ebx+4], 1 ; 0=ANSI, 1=UNICODE |
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441 | jnz .unicode_1 |
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442 | mov [edi+4],eax |
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443 | jmp @f |
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444 | .unicode_1: |
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445 | inc eax |
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446 | mov [edi+4],eax |
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447 | @@: |
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448 | ; получаем размер файла в байтах |
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449 | xor eax,eax |
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450 | mov [edi+32+4],eax |
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451 | mov eax,[ebp-23] |
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452 | mov [edi+32],eax |
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453 | ret |
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454 | |||
90 | mario79 | 455 | ;---------------------------------------------------------------- |
456 | ; |
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457 | ; fs_CdGetFileInfo - LFN variant for CD |
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458 | ; get file/directory attributes structure |
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379 | serge | 459 | ; |
90 | mario79 | 460 | ;---------------------------------------------------------------- |
461 | fs_CdGetFileInfo: |
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462 | cmp byte [esi], 0 |
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463 | jnz @f |
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464 | mov eax, 2 |
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465 | ret |
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466 | @@: |
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467 | push edi ebp |
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468 | call cd_find_lfn |
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469 | pushfd |
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470 | cmp [DevErrorCode], 0 |
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471 | jz @f |
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472 | popfd |
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473 | pop ebp edi |
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474 | mov eax, 11 |
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475 | ret |
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476 | @@: |
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477 | popfd |
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478 | jnc @f |
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479 | pop ebp edi |
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480 | mov eax, ERROR_FILE_NOT_FOUND |
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481 | ret |
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482 | @@: |
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483 | |||
484 | mov edi, edx |
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485 | call cd_get_parameters_of_file_1 |
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486 | and dword [edi+4], 0 |
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487 | pop ebp edi |
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488 | xor eax, eax |
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489 | ret |
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490 | |||
94 | mario79 | 491 | ;---------------------------------------------------------------- |
492 | ; |
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493 | ; fs_CdExecute - LFN variant for executing from CD |
||
494 | ; |
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495 | ; esi points to hd filename (e.g. 'dir1/name') |
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496 | ; ebp points to full filename (e.g. '/hd0/1/dir1/name') |
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497 | ; dword [ebx] = flags |
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498 | ; dword [ebx+4] = cmdline |
||
499 | ; |
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500 | ; ret ebx,edx destroyed |
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501 | ; eax > 0 - PID, < 0 - error |
||
502 | ; |
||
503 | ;-------------------------------------------------------------- |
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504 | fs_CdExecute: |
||
505 | mov edx, [ebx] |
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506 | mov ebx, [ebx+4] |
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507 | test ebx, ebx |
||
508 | jz @f |
||
465 | serge | 509 | ; add ebx, std_application_base_address |
94 | mario79 | 510 | @@: |
511 | |||
512 | ;---------------------------------------------------------------- |
||
513 | ; |
||
514 | ; fs_CdExecute.flags - second entry |
||
515 | ; |
||
516 | ; esi points to floppy filename (kernel address) |
||
517 | ; ebp points to full filename |
||
518 | ; edx flags |
||
519 | ; ebx cmdline (kernel address) |
||
520 | ; |
||
521 | ; ret eax > 0 - PID, < 0 - error |
||
522 | ; |
||
523 | ;-------------------------------------------------------------- |
||
524 | |||
525 | .flags: |
||
526 | cmp byte [esi], 0 |
||
527 | jnz @f |
||
528 | ; cannot execute root! |
||
529 | mov eax, -ERROR_ACCESS_DENIED |
||
530 | ret |
||
531 | @@: |
||
532 | push edi |
||
533 | call cd_find_lfn |
||
534 | jnc .found |
||
535 | pop edi |
||
536 | mov eax, -ERROR_FILE_NOT_FOUND |
||
537 | cmp [DevErrorCode], 0 |
||
538 | jz @f |
||
539 | mov al, -11 |
||
540 | @@: |
||
541 | ret |
||
542 | .found: |
||
543 | mov edi,[cd_current_pointer_of_input] |
||
544 | mov eax,[edi+2] |
||
545 | push 0 |
||
546 | push eax |
||
547 | push dword [edi+10] ; size |
||
548 | push .DoRead |
||
549 | call fs_execute |
||
550 | add esp, 16 |
||
551 | pop edi |
||
552 | ret |
||
553 | |||
554 | .DoRead: |
||
555 | ; read next block |
||
556 | ; in: eax->parameters, edi->buffer |
||
557 | ; out: eax = error code |
||
558 | pushad |
||
559 | cmp dword [eax], 0 ; file size |
||
560 | jz .eof |
||
561 | cmp [eax+8],dword 0 |
||
562 | jne @f |
||
563 | mov ecx,[eax+4] |
||
379 | serge | 564 | inc dword [eax+4] |
94 | mario79 | 565 | mov [CDSectorAddress],ecx |
566 | mov [CDDataBuf_pointer],CDDataBuf ;edi |
||
567 | call ReadCDWRetr |
||
568 | cmp [DevErrorCode], 0 |
||
569 | jnz .err |
||
570 | @@: |
||
571 | push esi edi ecx |
||
572 | mov esi,512 |
||
573 | imul esi,[eax+8] |
||
379 | serge | 574 | add esi,CDDataBuf |
94 | mario79 | 575 | mov ecx,512/4 |
576 | cld |
||
577 | rep movsd |
||
578 | pop ecx edi esi |
||
579 | |||
580 | mov eax, [esp+28] |
||
581 | mov ecx, [eax] |
||
582 | sub ecx, 512 |
||
583 | jae @f |
||
584 | lea edi, [edi+ecx+512] |
||
585 | neg ecx |
||
586 | push eax |
||
587 | xor eax, eax |
||
588 | rep stosb |
||
589 | pop eax |
||
590 | @@: |
||
591 | mov [eax], ecx |
||
592 | mov edx, [eax+8] |
||
593 | inc edx |
||
594 | cmp edx, 4 ; 2048/512=4 |
||
595 | jb @f |
||
596 | xor edx, edx |
||
597 | @@: |
||
598 | mov [eax+8], edx |
||
599 | popad |
||
600 | xor eax, eax |
||
601 | ret |
||
602 | .eof: |
||
603 | popad |
||
604 | mov eax, 6 |
||
605 | ret |
||
606 | .err: |
||
607 | popad |
||
608 | mov eax, 11 |
||
379 | serge | 609 | ret |
94 | mario79 | 610 | |
87 | mario79 | 611 | cd_find_lfn: |
612 | ; in: esi->name |
||
613 | ; out: CF=1 - file not found |
||
614 | ; else CF=0 and [cd_current_pointer_of_input] direntry |
||
615 | push eax esi |
||
616 | ; 16 сектор начало набора дескрипторов томов |
||
617 | mov [CDSectorAddress],dword 15 |
||
618 | .start: |
||
619 | inc dword [CDSectorAddress] |
||
620 | mov [CDDataBuf_pointer],CDDataBuf |
||
621 | call ReadCDWRetr |
||
622 | cmp [DevErrorCode],0 |
||
623 | jne .access_denied |
||
624 | ; проверка на вшивость |
||
625 | cmp [CDDataBuf+1],dword 'CD00' |
||
626 | jne .access_denied |
||
627 | cmp [CDDataBuf+5],byte '1' |
||
628 | jne .access_denied |
||
629 | ; сектор является терминатором набор дескрипторов томов? |
||
630 | cmp [CDDataBuf],byte 0xff |
||
379 | serge | 631 | je .access_denied |
87 | mario79 | 632 | ; сектор является дополнительным и улучшенным дескриптором тома? |
633 | cmp [CDDataBuf],byte 0x2 |
||
379 | serge | 634 | jne .start |
87 | mario79 | 635 | ; сектор является дополнительным дескриптором тома? |
636 | cmp [CDDataBuf+6],byte 0x1 |
||
637 | jne .start |
||
638 | ; параметры root директрории |
||
639 | mov eax,[CDDataBuf+0x9c+2] ; начало root директрории |
||
640 | mov [CDSectorAddress],eax |
||
641 | mov eax,[CDDataBuf+0x9c+10] ; размер root директрории |
||
642 | cmp byte [esi], 0 |
||
643 | jnz @f |
||
644 | mov [cd_current_pointer_of_input],CDDataBuf+0x9c |
||
645 | jmp .done |
||
646 | @@: |
||
647 | ; начинаем поиск |
||
648 | .mainloop: |
||
649 | dec dword [CDSectorAddress] |
||
650 | .read_to_buffer: |
||
651 | inc dword [CDSectorAddress] |
||
652 | mov [CDDataBuf_pointer],CDDataBuf |
||
653 | call ReadCDWRetr ; читаем сектор директории |
||
654 | cmp [DevErrorCode],0 |
||
655 | jne .access_denied |
||
656 | call cd_find_name_in_buffer |
||
657 | jnc .found |
||
658 | sub eax,2048 |
||
659 | ; директория закончилась? |
||
660 | cmp eax,0 |
||
99 | mario79 | 661 | ja .read_to_buffer |
87 | mario79 | 662 | ; нет искомого элемента цепочки |
663 | .access_denied: |
||
664 | pop esi eax |
||
665 | stc |
||
666 | ret |
||
667 | ; искомый элемент цепочки найден |
||
668 | .found: |
||
669 | ; конец пути файла |
||
94 | mario79 | 670 | cmp byte [esi-1], 0 |
87 | mario79 | 671 | jz .done |
672 | mov eax,[cd_current_pointer_of_input] |
||
364 | diamond | 673 | push dword [eax+2] |
674 | pop dword [CDSectorAddress] ; начало директории |
||
675 | mov eax,[eax+2+8] ; размер директории |
||
87 | mario79 | 676 | jmp .mainloop |
677 | ; указатель файла найден |
||
678 | .done: |
||
679 | pop esi eax |
||
680 | clc |
||
681 | ret |
||
379 | serge | 682 | |
87 | mario79 | 683 | cd_find_name_in_buffer: |
684 | mov [cd_current_pointer_of_input_2],CDDataBuf |
||
685 | .start: |
||
686 | call cd_get_name |
||
687 | jc .not_found |
||
688 | call cd_compare_name |
||
689 | jc .start |
||
379 | serge | 690 | .found: |
87 | mario79 | 691 | clc |
379 | serge | 692 | ret |
87 | mario79 | 693 | .not_found: |
694 | stc |
||
695 | ret |
||
696 | |||
697 | cd_get_name: |
||
698 | push eax |
||
699 | mov ebp,[cd_current_pointer_of_input_2] |
||
700 | mov [cd_current_pointer_of_input],ebp |
||
701 | mov eax,[ebp] |
||
702 | cmp eax,0 ; входы закончились? |
||
703 | je .next_sector |
||
704 | cmp ebp,CDDataBuf+2048 ; буфер закончился? |
||
705 | jae .next_sector |
||
706 | movzx eax, byte [ebp] |
||
707 | add [cd_current_pointer_of_input_2],eax ; следующий вход каталога |
||
708 | add ebp,33 ; указатель установлен на начало имени |
||
709 | pop eax |
||
710 | clc |
||
711 | ret |
||
712 | .next_sector: |
||
713 | pop eax |
||
714 | stc |
||
715 | ret |
||
716 | |||
717 | cd_compare_name: |
||
718 | ; compares ASCIIZ-names, case-insensitive (cp866 encoding) |
||
719 | ; in: esi->name, ebp->name |
||
720 | ; out: if names match: ZF=1 and esi->next component of name |
||
721 | ; else: ZF=0, esi is not changed |
||
722 | ; destroys eax |
||
379 | serge | 723 | push esi eax edi |
87 | mario79 | 724 | mov edi,ebp |
725 | .loop: |
||
726 | cld |
||
727 | lodsb |
||
728 | push ax |
||
99 | mario79 | 729 | call char_todown |
87 | mario79 | 730 | call ansi2uni_char |
731 | xchg ah,al |
||
732 | cld |
||
733 | scasw |
||
734 | pop ax |
||
735 | je .coincides |
||
99 | mario79 | 736 | call char_toupper |
87 | mario79 | 737 | call ansi2uni_char |
738 | xchg ah,al |
||
379 | serge | 739 | cld |
87 | mario79 | 740 | sub edi,2 |
741 | scasw |
||
742 | jne .name_not_coincide |
||
743 | .coincides: |
||
744 | cmp [esi],byte '/' ; разделитель пути, конец имени текущего элемента |
||
745 | je .done |
||
746 | cmp [esi],byte 0 ; разделитель пути, конец имени текущего элемента |
||
747 | je .done |
||
748 | jmp .loop |
||
749 | .name_not_coincide: |
||
750 | pop edi eax esi |
||
751 | stc |
||
752 | ret |
||
753 | .done: |
||
754 | ; проверка конца файла |
||
755 | cmp [edi],word 3B00h ; сепаратор конца файла ';' |
||
756 | je .done_1 |
||
757 | ; проверка для файлов не заканчивающихся сепаратором |
||
758 | movzx eax,byte [ebp-33] |
||
759 | add eax,ebp |
||
760 | sub eax,34 |
||
761 | cmp edi,eax |
||
379 | serge | 762 | je .done_1 |
87 | mario79 | 763 | ; проверка конца папки |
764 | movzx eax,byte [ebp-1] |
||
765 | add eax,ebp |
||
766 | cmp edi,eax |
||
767 | jne .name_not_coincide |
||
768 | .done_1: |
||
769 | pop edi eax |
||
770 | add esp,4 |
||
771 | inc esi |
||
772 | clc |
||
773 | ret |
||
379 | serge | 774 | |
87 | mario79 | 775 | char_todown: |
776 | ; convert character to uppercase, using cp866 encoding |
||
777 | ; in: al=symbol |
||
778 | ; out: al=converted symbol |
||
779 | cmp al, 'A' |
||
780 | jb .ret |
||
781 | cmp al, 'Z' |
||
782 | jbe .az |
||
783 | cmp al, 'Ђ' |
||
784 | jb .ret |
||
785 | cmp al, 'ђ' |
||
786 | jb .rus1 |
||
787 | cmp al, 'џ' |
||
788 | ja .ret |
||
789 | ; 0x90-0x9F -> 0xE0-0xEF |
||
790 | add al, 'а'-'ђ' |
||
791 | .ret: |
||
792 | ret |
||
793 | .rus1: |
||
794 | ; 0x80-0x8F -> 0xA0-0xAF |
||
795 | .az: |
||
796 | add al, 0x20 |
||
797 | ret |
||
379 | serge | 798 | |
87 | mario79 | 799 | uni2ansi_char: |
800 | ; convert UNICODE character in al to ANSI character in ax, using cp866 encoding |
||
801 | ; in: ax=UNICODE character |
||
802 | ; out: al=converted ANSI character |
||
803 | cmp ax, 0x80 |
||
804 | jb .ascii |
||
805 | cmp ax, 0x401 |
||
806 | jz .yo1 |
||
807 | cmp ax, 0x451 |
||
808 | jz .yo2 |
||
809 | cmp ax, 0x410 |
||
810 | jb .unk |
||
811 | cmp ax, 0x440 |
||
812 | jb .rus1 |
||
813 | cmp ax, 0x450 |
||
814 | jb .rus2 |
||
815 | .unk: |
||
816 | mov al, '_' |
||
817 | jmp .doit |
||
818 | .yo1: |
||
819 | mov al, 'р' |
||
820 | jmp .doit |
||
821 | .yo2: |
||
822 | mov al, 'с' |
||
823 | jmp .doit |
||
824 | .rus1: |
||
825 | ; 0x410-0x43F -> 0x80-0xAF |
||
826 | add al, 0x70 |
||
827 | jmp .doit |
||
828 | .rus2: |
||
829 | ; 0x440-0x44F -> 0xE0-0xEF |
||
830 | add al, 0xA0 |
||
831 | .ascii: |
||
832 | .doit: |
||
833 | ret>> |