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Rev | Author | Line No. | Line |
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425 | victor | 1 | $Revision: 521 $ |
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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8 | |||
521 | diamond | 9 | image_of_eax EQU esp+36 |
10 | image_of_ebx EQU esp+24 |
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488 | spraid | 11 | |
72 | diamond | 12 | ; System function 70 - files with long names (LFN) |
71 | diamond | 13 | ; diamond, 2006 |
14 | |||
15 | iglobal |
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16 | ; in this table names must be in lowercase |
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17 | rootdirs: |
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75 | diamond | 18 | db 2,'rd' |
19 | dd fs_OnRamdisk |
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20 | dd fs_NextRamdisk |
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21 | db 7,'ramdisk' |
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22 | dd fs_OnRamdisk |
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23 | dd fs_NextRamdisk |
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24 | db 2,'fd' |
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25 | dd fs_OnFloppy |
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26 | dd fs_NextFloppy |
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27 | db 10,'floppydisk' |
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28 | dd fs_OnFloppy |
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29 | dd fs_NextFloppy |
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30 | db 3,'hd0' |
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31 | dd fs_OnHd0 |
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32 | dd fs_NextHd0 |
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33 | db 3,'hd1' |
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34 | dd fs_OnHd1 |
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35 | dd fs_NextHd1 |
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36 | db 3,'hd2' |
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37 | dd fs_OnHd2 |
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38 | dd fs_NextHd2 |
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39 | db 3,'hd3' |
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40 | dd fs_OnHd3 |
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41 | dd fs_NextHd3 |
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87 | mario79 | 42 | ;********************************************** |
43 | db 3,'cd0' |
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44 | dd fs_OnCd0 |
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45 | dd fs_NextCd |
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46 | db 3,'cd1' |
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47 | dd fs_OnCd1 |
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48 | dd fs_NextCd |
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49 | db 3,'cd2' |
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50 | dd fs_OnCd2 |
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51 | dd fs_NextCd |
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52 | db 3,'cd3' |
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53 | dd fs_OnCd3 |
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54 | dd fs_NextCd |
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237 | serge | 55 | ;*********************************************** |
75 | diamond | 56 | db 0 |
57 | |||
87 | mario79 | 58 | |
75 | diamond | 59 | virtual_root_query: |
60 | dd fs_HasRamdisk |
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78 | diamond | 61 | db 'rd',0 |
75 | diamond | 62 | dd fs_HasFloppy |
78 | diamond | 63 | db 'fd',0 |
75 | diamond | 64 | dd fs_HasHd0 |
78 | diamond | 65 | db 'hd0',0 |
75 | diamond | 66 | dd fs_HasHd1 |
78 | diamond | 67 | db 'hd1',0 |
75 | diamond | 68 | dd fs_HasHd2 |
78 | diamond | 69 | db 'hd2',0 |
75 | diamond | 70 | dd fs_HasHd3 |
78 | diamond | 71 | db 'hd3',0 |
87 | mario79 | 72 | ;********************************************** |
73 | dd fs_HasCd0 |
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74 | db 'cd0',0 |
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75 | dd fs_HasCd1 |
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76 | db 'cd1',0 |
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77 | dd fs_HasCd2 |
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78 | db 'cd2',0 |
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79 | dd fs_HasCd3 |
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80 | db 'cd3',0 |
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81 | ;********************************************** |
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75 | diamond | 82 | dd 0 |
71 | diamond | 83 | endg |
84 | |||
85 | file_system_lfn: |
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86 | ; in: eax->fileinfo block |
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87 | ; operation codes: |
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72 | diamond | 88 | ; 0 : read file |
75 | diamond | 89 | ; 1 : read folder |
83 | diamond | 90 | ; 2 : create/rewrite file |
133 | diamond | 91 | ; 3 : write/append to file |
92 | ; 4 : set end of file |
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86 | diamond | 93 | ; 5 : get file/directory attributes structure |
94 | ; 6 : set file/directory attributes structure |
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91 | diamond | 95 | ; 7 : start application |
171 | diamond | 96 | ; 8 : delete file |
321 | diamond | 97 | ; 9 : create directory |
71 | diamond | 98 | |
99 | ; parse file name |
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75 | diamond | 100 | xchg ebx, eax |
101 | lea esi, [ebx+20] |
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102 | lodsb |
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84 | diamond | 103 | test al, al |
104 | jnz @f |
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105 | mov esi, [esi] |
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106 | lodsb |
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107 | @@: |
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521 | diamond | 108 | cmp al, '/' |
109 | jz .notcurdir |
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110 | dec esi |
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111 | mov ebp, esi |
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112 | test al, al |
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113 | jnz @f |
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114 | xor ebp, ebp |
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115 | @@: |
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116 | mov esi, [current_slot] |
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117 | mov esi, [esi+APPDATA.cur_dir] |
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118 | jmp .parse_normal |
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119 | .notcurdir: |
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120 | cmp byte [esi], 0 |
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121 | jz .rootdir |
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122 | call process_replace_file_name |
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123 | .parse_normal: |
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237 | serge | 124 | cmp dword [ebx], 7 |
125 | jne @F |
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126 | mov edx, [ebx+4] |
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127 | mov ebx, [ebx+8] |
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521 | diamond | 128 | call fs_execute ; esi+ebp, ebx, edx |
488 | spraid | 129 | mov [image_of_eax], eax |
237 | serge | 130 | ret |
131 | @@: |
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75 | diamond | 132 | mov edi, rootdirs-8 |
133 | xor ecx, ecx |
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134 | push esi |
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71 | diamond | 135 | .scan1: |
75 | diamond | 136 | pop esi |
137 | add edi, ecx |
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138 | scasd |
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139 | scasd |
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140 | mov cl, byte [edi] |
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521 | diamond | 141 | test cl, cl |
142 | jz .notfound |
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75 | diamond | 143 | inc edi |
144 | push esi |
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71 | diamond | 145 | @@: |
75 | diamond | 146 | lodsb |
147 | or al, 20h |
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148 | scasb |
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149 | loopz @b |
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150 | jnz .scan1 |
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151 | lodsb |
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152 | cmp al, '/' |
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153 | jz .found1 |
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154 | test al, al |
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155 | jnz .scan1 |
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156 | pop eax |
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71 | diamond | 157 | ; directory /xxx |
158 | .maindir: |
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75 | diamond | 159 | cmp dword [ebx], 1 |
160 | jnz .access_denied |
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161 | xor eax, eax |
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162 | mov ebp, [ebx+12] |
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163 | mov edx, [ebx+16] |
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465 | serge | 164 | ; add edx, std_application_base_address |
78 | diamond | 165 | push dword [ebx+4] ; first block |
166 | mov ebx, [ebx+8] ; flags |
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75 | diamond | 167 | mov esi, [edi+4] |
78 | diamond | 168 | ; ebx=flags, [esp]=first block, ebp=number of blocks, edx=return area, esi='Next' handler |
75 | diamond | 169 | mov edi, edx |
170 | mov ecx, 32/4 |
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171 | rep stosd |
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172 | mov byte [edx], 1 ; version |
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173 | .maindir_loop: |
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174 | call esi |
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175 | jc .maindir_done |
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176 | inc dword [edx+8] |
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78 | diamond | 177 | dec dword [esp] |
75 | diamond | 178 | jns .maindir_loop |
179 | dec ebp |
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180 | js .maindir_loop |
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181 | inc dword [edx+4] |
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182 | mov dword [edi], 0x10 ; attributes: folder |
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183 | mov dword [edi+4], 1 ; name type: UNICODE |
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184 | push eax |
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185 | xor eax, eax |
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186 | add edi, 8 |
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187 | mov ecx, 40/4-2 |
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188 | rep stosd |
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189 | pop eax |
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190 | push eax edx |
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191 | ; convert number in eax to decimal UNICODE string |
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192 | push edi |
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193 | push -'0' |
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194 | mov cl, 10 |
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195 | @@: |
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196 | xor edx, edx |
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197 | div ecx |
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198 | push edx |
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199 | test eax, eax |
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200 | jnz @b |
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201 | @@: |
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202 | pop eax |
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203 | add al, '0' |
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78 | diamond | 204 | stosb |
205 | test bl, 1 ; UNICODE name? |
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206 | jz .ansi2 |
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207 | mov byte [edi], 0 |
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208 | inc edi |
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209 | .ansi2: |
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210 | test al, al |
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75 | diamond | 211 | jnz @b |
212 | mov byte [edi-1], 0 |
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213 | pop edi |
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78 | diamond | 214 | ; UNICODE name length is 520 bytes, ANSI - 264 |
75 | diamond | 215 | add edi, 520 |
78 | diamond | 216 | test bl, 1 |
217 | jnz @f |
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218 | sub edi, 520-264 |
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219 | @@: |
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75 | diamond | 220 | pop edx eax |
221 | jmp .maindir_loop |
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222 | .maindir_done: |
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78 | diamond | 223 | pop eax |
224 | mov ebx, [edx+4] |
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75 | diamond | 225 | xor eax, eax |
226 | dec ebp |
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227 | js @f |
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228 | mov al, ERROR_END_OF_FILE |
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229 | @@: |
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488 | spraid | 230 | mov [image_of_eax], eax |
231 | mov [image_of_ebx], ebx |
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75 | diamond | 232 | ret |
71 | diamond | 233 | ; directory / |
234 | .rootdir: |
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75 | diamond | 235 | cmp dword [ebx], 1 ; read folder? |
236 | jz .readroot |
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237 | .access_denied: |
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488 | spraid | 238 | mov dword [image_of_eax], 10 ; access denied |
75 | diamond | 239 | ret |
71 | diamond | 240 | |
75 | diamond | 241 | .readroot: |
242 | ; virtual root folder - special handler |
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243 | mov esi, virtual_root_query |
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244 | mov ebp, [ebx+12] |
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245 | mov edx, [ebx+16] |
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465 | serge | 246 | ; add edx, std_application_base_address |
78 | diamond | 247 | push dword [ebx+4] ; first block |
248 | mov ebx, [ebx+8] ; flags |
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75 | diamond | 249 | xor eax, eax |
78 | diamond | 250 | ; eax=0, [esp]=first block, ebx=flags, ebp=number of blocks, edx=return area |
75 | diamond | 251 | mov edi, edx |
252 | mov ecx, 32/4 |
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253 | rep stosd |
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254 | mov byte [edx], 1 ; version |
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255 | .readroot_loop: |
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256 | cmp dword [esi], eax |
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257 | jz .readroot_done |
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258 | call dword [esi] |
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259 | add esi, 4 |
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260 | test eax, eax |
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261 | jnz @f |
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262 | .readroot_next: |
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263 | or ecx, -1 |
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264 | xchg esi, edi |
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78 | diamond | 265 | repnz scasb |
75 | diamond | 266 | xchg esi, edi |
267 | jmp .readroot_loop |
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268 | @@: |
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269 | xor eax, eax |
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270 | inc dword [edx+8] |
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78 | diamond | 271 | dec dword [esp] |
75 | diamond | 272 | jns .readroot_next |
273 | dec ebp |
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274 | js .readroot_next |
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275 | inc dword [edx+4] |
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276 | mov dword [edi], 0x10 ; attributes: folder |
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277 | mov dword [edi+4], 1 ; name type: UNICODE |
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278 | add edi, 8 |
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279 | mov ecx, 40/4-2 |
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280 | rep stosd |
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281 | push edi |
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282 | @@: |
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78 | diamond | 283 | lodsb |
284 | stosb |
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285 | test bl, 1 |
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286 | jz .ansi |
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287 | mov byte [edi], 0 |
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288 | inc edi |
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289 | .ansi: |
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75 | diamond | 290 | test eax, eax |
291 | jnz @b |
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292 | pop edi |
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293 | add edi, 520 |
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78 | diamond | 294 | test bl, 1 |
295 | jnz .readroot_loop |
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296 | sub edi, 520-264 |
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75 | diamond | 297 | jmp .readroot_loop |
298 | .readroot_done: |
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78 | diamond | 299 | pop eax |
300 | mov ebx, [edx+4] |
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75 | diamond | 301 | xor eax, eax |
302 | dec ebp |
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303 | js @f |
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304 | mov al, ERROR_END_OF_FILE |
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305 | @@: |
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488 | spraid | 306 | mov [image_of_eax], eax |
307 | mov [image_of_ebx], ebx |
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75 | diamond | 308 | ret |
521 | diamond | 309 | .notfound: |
310 | mov dword [image_of_eax], ERROR_FILE_NOT_FOUND |
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311 | and dword [image_of_ebx], 0 |
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312 | ret |
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75 | diamond | 313 | |
71 | diamond | 314 | .found1: |
75 | diamond | 315 | pop eax |
316 | cmp byte [esi], 0 |
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317 | jz .maindir |
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71 | diamond | 318 | ; read partition number |
75 | diamond | 319 | xor ecx, ecx |
320 | xor eax, eax |
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71 | diamond | 321 | @@: |
75 | diamond | 322 | lodsb |
323 | cmp al, '/' |
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324 | jz .done1 |
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325 | test al, al |
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326 | jz .done1 |
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327 | sub al, '0' |
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328 | cmp al, 9 |
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329 | ja .notfound |
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521 | diamond | 330 | lea ecx, [ecx*5] |
331 | lea ecx, [ecx*2+eax] |
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75 | diamond | 332 | jmp @b |
71 | diamond | 333 | .done1: |
521 | diamond | 334 | jecxz .notfound |
75 | diamond | 335 | test al, al |
336 | jnz @f |
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337 | dec esi |
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71 | diamond | 338 | @@: |
521 | diamond | 339 | cmp byte [esi], 0 |
340 | jnz @f |
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341 | test ebp, ebp |
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342 | jz @f |
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343 | mov esi, ebp |
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344 | xor ebp, ebp |
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345 | @@: |
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75 | diamond | 346 | ; now [edi] contains handler address, ecx - partition number, |
347 | ; esi points to ASCIIZ string - rest of name |
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348 | jmp dword [edi] |
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71 | diamond | 349 | |
350 | ; handlers for devices |
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75 | diamond | 351 | ; in: ecx = 0 => query virtual directory /xxx |
71 | diamond | 352 | ; in: ecx = partition number |
353 | ; esi -> relative (for device) name |
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354 | ; ebx -> fileinfo |
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521 | diamond | 355 | ; ebp = 0 or pointer to rest of name from folder addressed by esi |
488 | spraid | 356 | ; out: [image_of_eax]=image of eax, [image_of_ebx]=image of ebx |
71 | diamond | 357 | |
358 | fs_OnRamdisk: |
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75 | diamond | 359 | cmp ecx, 1 |
360 | jnz file_system_lfn.notfound |
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361 | mov eax, [ebx] |
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83 | diamond | 362 | cmp eax, fs_NumRamdiskServices |
363 | jae .not_impl |
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75 | diamond | 364 | mov ecx, [ebx+12] |
365 | mov edx, [ebx+16] |
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465 | serge | 366 | ; add edx, std_application_base_address |
75 | diamond | 367 | add ebx, 4 |
368 | call dword [fs_RamdiskServices + eax*4] |
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488 | spraid | 369 | mov [image_of_eax], eax |
370 | mov [image_of_ebx], ebx |
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75 | diamond | 371 | ret |
71 | diamond | 372 | .not_impl: |
488 | spraid | 373 | mov dword [image_of_eax], 2 ; not implemented |
75 | diamond | 374 | ret |
71 | diamond | 375 | |
86 | diamond | 376 | fs_NotImplemented: |
377 | mov eax, 2 |
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378 | ret |
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379 | |||
71 | diamond | 380 | fs_RamdiskServices: |
75 | diamond | 381 | dd fs_RamdiskRead |
382 | dd fs_RamdiskReadFolder |
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83 | diamond | 383 | dd fs_RamdiskRewrite |
131 | diamond | 384 | dd fs_RamdiskWrite |
133 | diamond | 385 | dd fs_RamdiskSetFileEnd |
86 | diamond | 386 | dd fs_RamdiskGetFileInfo |
387 | dd fs_RamdiskSetFileInfo |
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521 | diamond | 388 | dd 0 |
171 | diamond | 389 | dd fs_RamdiskDelete |
321 | diamond | 390 | dd fs_RamdiskCreateFolder |
83 | diamond | 391 | fs_NumRamdiskServices = ($ - fs_RamdiskServices)/4 |
71 | diamond | 392 | |
393 | fs_OnFloppy: |
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75 | diamond | 394 | cmp ecx, 2 |
395 | ja file_system_lfn.notfound |
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396 | mov eax, [ebx] |
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83 | diamond | 397 | cmp eax, fs_NumFloppyServices |
398 | jae fs_OnRamdisk.not_impl |
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75 | diamond | 399 | call reserve_flp |
400 | mov [flp_number], cl |
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401 | mov ecx, [ebx+12] |
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402 | mov edx, [ebx+16] |
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465 | serge | 403 | ; add edx, std_application_base_address |
75 | diamond | 404 | add ebx, 4 |
405 | call dword [fs_FloppyServices + eax*4] |
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406 | and [flp_status], 0 |
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488 | spraid | 407 | mov [image_of_eax], eax |
408 | mov [image_of_ebx], ebx |
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75 | diamond | 409 | ret |
71 | diamond | 410 | |
411 | fs_FloppyServices: |
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75 | diamond | 412 | dd fs_FloppyRead |
413 | dd fs_FloppyReadFolder |
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83 | diamond | 414 | dd fs_FloppyRewrite |
131 | diamond | 415 | dd fs_FloppyWrite |
133 | diamond | 416 | dd fs_FloppySetFileEnd |
86 | diamond | 417 | dd fs_FloppyGetFileInfo |
418 | dd fs_FloppySetFileInfo |
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521 | diamond | 419 | dd 0 |
171 | diamond | 420 | dd fs_FloppyDelete |
321 | diamond | 421 | dd fs_FloppyCreateFolder |
83 | diamond | 422 | fs_NumFloppyServices = ($ - fs_FloppyServices)/4 |
71 | diamond | 423 | |
424 | fs_OnHd0: |
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75 | diamond | 425 | call reserve_hd1 |
426 | mov [hdbase], 0x1F0 |
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427 | mov [hdid], 0 |
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428 | push 1 |
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429 | jmp fs_OnHd |
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71 | diamond | 430 | fs_OnHd1: |
75 | diamond | 431 | call reserve_hd1 |
432 | mov [hdbase], 0x1F0 |
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433 | mov [hdid], 0x10 |
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434 | push 2 |
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435 | jmp fs_OnHd |
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71 | diamond | 436 | fs_OnHd2: |
75 | diamond | 437 | call reserve_hd1 |
438 | mov [hdbase], 0x170 |
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439 | mov [hdid], 0 |
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440 | push 3 |
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441 | jmp fs_OnHd |
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71 | diamond | 442 | fs_OnHd3: |
75 | diamond | 443 | call reserve_hd1 |
444 | mov [hdbase], 0x170 |
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445 | mov [hdid], 0x10 |
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446 | push 4 |
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71 | diamond | 447 | fs_OnHd: |
95 | mario79 | 448 | call reserve_hd_channel |
75 | diamond | 449 | pop eax |
450 | mov [hdpos], eax |
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451 | cmp ecx, 0x100 |
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452 | jae .nf |
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422 | serge | 453 | cmp cl, [DRIVE_DATA+1+eax] |
75 | diamond | 454 | jbe @f |
455 | .nf: |
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95 | mario79 | 456 | call free_hd_channel |
75 | diamond | 457 | and [hd1_status], 0 |
488 | spraid | 458 | mov dword [image_of_eax], 5 ; not found |
75 | diamond | 459 | ret |
71 | diamond | 460 | @@: |
75 | diamond | 461 | mov [fat32part], ecx |
462 | push ebx esi |
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463 | call choice_necessity_partition_1 |
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464 | pop esi ebx |
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465 | mov ecx, [ebx+12] |
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466 | mov edx, [ebx+16] |
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465 | serge | 467 | ; add edx, std_application_base_address |
75 | diamond | 468 | mov eax, [ebx] |
83 | diamond | 469 | cmp eax, fs_NumHdServices |
470 | jae .not_impl |
||
75 | diamond | 471 | add ebx, 4 |
472 | call dword [fs_HdServices + eax*4] |
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95 | mario79 | 473 | call free_hd_channel |
75 | diamond | 474 | and [hd1_status], 0 |
488 | spraid | 475 | mov [image_of_eax], eax |
476 | mov [image_of_ebx], ebx |
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75 | diamond | 477 | ret |
478 | .not_impl: |
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95 | mario79 | 479 | call free_hd_channel |
75 | diamond | 480 | and [hd1_status], 0 |
488 | spraid | 481 | mov dword [image_of_eax], 2 ; not implemented |
75 | diamond | 482 | ret |
71 | diamond | 483 | |
484 | fs_HdServices: |
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75 | diamond | 485 | dd fs_HdRead |
486 | dd fs_HdReadFolder |
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83 | diamond | 487 | dd fs_HdRewrite |
131 | diamond | 488 | dd fs_HdWrite |
133 | diamond | 489 | dd fs_HdSetFileEnd |
86 | diamond | 490 | dd fs_HdGetFileInfo |
491 | dd fs_HdSetFileInfo |
||
521 | diamond | 492 | dd 0 |
171 | diamond | 493 | dd fs_HdDelete |
321 | diamond | 494 | dd fs_HdCreateFolder |
83 | diamond | 495 | fs_NumHdServices = ($ - fs_HdServices)/4 |
75 | diamond | 496 | |
87 | mario79 | 497 | ;******************************************************* |
498 | fs_OnCd0: |
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499 | call reserve_cd |
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500 | mov [ChannelNumber],1 |
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501 | mov [DiskNumber],0 |
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502 | push 6 |
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503 | jmp fs_OnCd |
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504 | fs_OnCd1: |
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505 | call reserve_cd |
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506 | mov [ChannelNumber],1 |
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507 | mov [DiskNumber],1 |
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508 | push 4 |
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509 | jmp fs_OnCd |
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510 | fs_OnCd2: |
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511 | call reserve_cd |
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512 | mov [ChannelNumber],2 |
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513 | mov [DiskNumber],0 |
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514 | push 2 |
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515 | jmp fs_OnCd |
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516 | fs_OnCd3: |
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517 | call reserve_cd |
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518 | mov [ChannelNumber],2 |
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519 | mov [DiskNumber],1 |
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520 | push 0 |
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521 | fs_OnCd: |
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95 | mario79 | 522 | call reserve_cd_channel |
87 | mario79 | 523 | pop eax |
524 | mov [hdpos], eax |
||
525 | cmp ecx, 0x100 |
||
526 | jae .nf |
||
133 | diamond | 527 | push ecx ebx |
87 | mario79 | 528 | mov cl,al |
389 | serge | 529 | mov bl,[DRIVE_DATA+1] |
87 | mario79 | 530 | shr bl,cl |
531 | test bl,2 |
||
133 | diamond | 532 | pop ebx ecx |
87 | mario79 | 533 | |
534 | jnz @f |
||
535 | .nf: |
||
95 | mario79 | 536 | call free_cd_channel |
87 | mario79 | 537 | and [cd_status], 0 |
488 | spraid | 538 | mov dword [image_of_eax], 5 ; not found |
87 | mario79 | 539 | ret |
540 | @@: |
||
541 | mov ecx, [ebx+12] |
||
542 | mov edx, [ebx+16] |
||
465 | serge | 543 | ; add edx, std_application_base_address |
87 | mario79 | 544 | mov eax, [ebx] |
90 | mario79 | 545 | cmp eax,fs_NumCdServices |
546 | jae .not_impl |
||
87 | mario79 | 547 | add ebx, 4 |
548 | call dword [fs_CdServices + eax*4] |
||
95 | mario79 | 549 | call free_cd_channel |
87 | mario79 | 550 | and [cd_status], 0 |
488 | spraid | 551 | mov [image_of_eax], eax |
552 | mov [image_of_ebx], ebx |
||
87 | mario79 | 553 | ret |
554 | .not_impl: |
||
95 | mario79 | 555 | call free_cd_channel |
89 | diamond | 556 | and [cd_status], 0 |
488 | spraid | 557 | mov dword [image_of_eax], 2 ; not implemented |
87 | mario79 | 558 | ret |
559 | |||
560 | fs_CdServices: |
||
561 | dd fs_CdRead |
||
562 | dd fs_CdReadFolder |
||
90 | mario79 | 563 | dd fs_NotImplemented |
564 | dd fs_NotImplemented |
||
565 | dd fs_NotImplemented |
||
566 | dd fs_CdGetFileInfo |
||
567 | dd fs_NotImplemented |
||
521 | diamond | 568 | dd 0 |
90 | mario79 | 569 | fs_NumCdServices = ($ - fs_CdServices)/4 |
570 | |||
87 | mario79 | 571 | ;******************************************************* |
572 | |||
75 | diamond | 573 | fs_HasRamdisk: |
574 | mov al, 1 ; we always have ramdisk |
||
575 | ret |
||
576 | |||
577 | fs_HasFloppy: |
||
381 | serge | 578 | cmp byte [DRIVE_DATA], 0 |
75 | diamond | 579 | setnz al |
580 | ret |
||
581 | |||
582 | fs_HasHd0: |
||
381 | serge | 583 | mov al, [DRIVE_DATA+1] |
75 | diamond | 584 | and al, 11000000b |
585 | cmp al, 01000000b |
||
586 | setz al |
||
587 | ret |
||
588 | fs_HasHd1: |
||
381 | serge | 589 | mov al, [DRIVE_DATA+1] |
75 | diamond | 590 | and al, 00110000b |
591 | cmp al, 00010000b |
||
592 | setz al |
||
593 | ret |
||
594 | fs_HasHd2: |
||
381 | serge | 595 | mov al, [DRIVE_DATA+1] |
75 | diamond | 596 | and al, 00001100b |
597 | cmp al, 00000100b |
||
598 | setz al |
||
599 | ret |
||
600 | fs_HasHd3: |
||
381 | serge | 601 | mov al, [DRIVE_DATA+1] |
75 | diamond | 602 | and al, 00000011b |
603 | cmp al, 00000001b |
||
604 | setz al |
||
605 | ret |
||
606 | |||
87 | mario79 | 607 | ;******************************************************* |
608 | fs_HasCd0: |
||
381 | serge | 609 | mov al, [DRIVE_DATA+1] |
87 | mario79 | 610 | and al, 11000000b |
611 | cmp al, 10000000b |
||
612 | setz al |
||
613 | ret |
||
614 | fs_HasCd1: |
||
381 | serge | 615 | mov al, [DRIVE_DATA+1] |
87 | mario79 | 616 | and al, 00110000b |
617 | cmp al, 00100000b |
||
618 | setz al |
||
619 | ret |
||
620 | fs_HasCd2: |
||
381 | serge | 621 | mov al, [DRIVE_DATA+1] |
87 | mario79 | 622 | and al, 00001100b |
623 | cmp al, 00001000b |
||
624 | setz al |
||
625 | ret |
||
626 | fs_HasCd3: |
||
381 | serge | 627 | mov al, [DRIVE_DATA+1] |
87 | mario79 | 628 | and al, 00000011b |
629 | cmp al, 00000010b |
||
630 | setz al |
||
631 | ret |
||
237 | serge | 632 | ;******************************************************* |
87 | mario79 | 633 | |
75 | diamond | 634 | ; fs_NextXXX functions: |
635 | ; in: eax = partition number, from which start to scan |
||
636 | ; out: CF=1 => no more partitions |
||
637 | ; CF=0 => eax=next partition number |
||
638 | |||
639 | fs_NextRamdisk: |
||
640 | ; we always have /rd/1 |
||
641 | test eax, eax |
||
642 | stc |
||
643 | jnz @f |
||
644 | mov al, 1 |
||
645 | clc |
||
646 | @@: |
||
647 | ret |
||
648 | |||
649 | fs_NextFloppy: |
||
381 | serge | 650 | ; we have /fd/1 iff (([DRIVE_DATA] and 0xF0) != 0) and /fd/2 iff (([DRIVE_DATA] and 0x0F) != 0) |
651 | test byte [DRIVE_DATA], 0xF0 |
||
75 | diamond | 652 | jz .no1 |
653 | test eax, eax |
||
654 | jnz .no1 |
||
655 | inc eax |
||
656 | ret ; CF cleared |
||
657 | .no1: |
||
381 | serge | 658 | test byte [DRIVE_DATA], 0x0F |
75 | diamond | 659 | jz .no2 |
660 | cmp al, 2 |
||
661 | jae .no2 |
||
662 | mov al, 2 |
||
663 | clc |
||
664 | ret |
||
665 | .no2: |
||
666 | stc |
||
667 | ret |
||
668 | |||
669 | ; on hdx, we have partitions from 1 to [0x40002+x] |
||
670 | fs_NextHd0: |
||
671 | push 0 |
||
672 | jmp fs_NextHd |
||
673 | fs_NextHd1: |
||
674 | push 1 |
||
675 | jmp fs_NextHd |
||
676 | fs_NextHd2: |
||
677 | push 2 |
||
678 | jmp fs_NextHd |
||
679 | fs_NextHd3: |
||
680 | push 3 |
||
681 | fs_NextHd: |
||
682 | pop ecx |
||
381 | serge | 683 | movzx ecx, byte [DRIVE_DATA+2+ecx] |
75 | diamond | 684 | cmp eax, ecx |
685 | jae fs_NextFloppy.no2 |
||
686 | inc eax |
||
687 | clc |
||
688 | ret |
||
237 | serge | 689 | |
87 | mario79 | 690 | ;******************************************************* |
691 | fs_NextCd: |
||
692 | ; we always have /cdX/1 |
||
693 | test eax, eax |
||
694 | stc |
||
695 | jnz @f |
||
696 | mov al, 1 |
||
697 | clc |
||
698 | @@: |
||
699 | ret |
||
700 | ;******************************************************* |
||
701 | |||
521 | diamond | 702 | process_replace_file_name: |
703 | mov ebp, [full_file_name_table] |
||
704 | mov edi, [full_file_name_table.size] |
||
705 | dec edi |
||
706 | shl edi, 7 |
||
707 | add edi, ebp |
||
708 | .loop: |
||
709 | cmp edi, ebp |
||
710 | jb .notfound |
||
711 | push esi edi |
||
712 | @@: |
||
713 | cmp byte [edi], 0 |
||
714 | jz .dest_done |
||
715 | lodsb |
||
716 | test al, al |
||
717 | jz .cont |
||
718 | or al, 20h |
||
719 | scasb |
||
720 | jz @b |
||
721 | jmp .cont |
||
722 | .dest_done: |
||
723 | cmp byte [esi], 0 |
||
724 | jz .found |
||
725 | cmp byte [esi], '/' |
||
726 | jnz .cont |
||
727 | inc esi |
||
728 | jmp .found |
||
729 | .cont: |
||
730 | pop edi esi |
||
731 | sub edi, 128 |
||
732 | jmp .loop |
||
733 | .found: |
||
734 | pop edi eax |
||
735 | mov ebp, esi |
||
736 | cmp byte [esi], 0 |
||
737 | lea esi, [edi+64] |
||
738 | jnz .ret |
||
739 | .notfound: |
||
740 | xor ebp, ebp |
||
741 | .ret: |
||
742 | ret |
||
743 | |||
744 | sys_current_directory: |
||
745 | mov esi, [current_slot] |
||
746 | mov esi, [esi+APPDATA.cur_dir] |
||
747 | mov edx, esi |
||
748 | dec eax |
||
749 | jz .set |
||
750 | dec eax |
||
751 | jz .get |
||
752 | ret |
||
753 | .get: |
||
754 | ; sysfunction 30.2: [for app] eax=30,ebx=2,ecx->buffer,edx=len |
||
755 | ; for our code: ebx->buffer,ecx=len |
||
756 | @@: |
||
757 | lodsb |
||
758 | test al, al |
||
759 | jnz @b |
||
760 | sub esi, edx |
||
761 | inc esi |
||
762 | mov [esp+36], esi |
||
763 | cmp ecx, esi |
||
764 | jbe @f |
||
765 | mov ecx, esi |
||
766 | @@: |
||
767 | cmp ecx, 1 |
||
768 | jbe .ret |
||
769 | mov esi, edx |
||
770 | mov edi, ebx |
||
771 | mov al, '/' |
||
772 | stosb |
||
773 | dec ecx |
||
774 | dec ecx |
||
775 | rep movsb |
||
776 | mov byte [edi], 0 |
||
777 | .ret: |
||
778 | ret |
||
779 | .set: |
||
780 | ; sysfunction 30.1: [for app] eax=30,ebx=1,ecx->string |
||
781 | ; for our code: ebx->string to set |
||
782 | @@: |
||
783 | inc esi |
||
784 | cmp byte [esi-1], 0 |
||
785 | jnz @b |
||
786 | dec esi |
||
787 | cmp byte [ebx], '/' |
||
788 | jz .set_absolute |
||
789 | ; string gives relative path |
||
790 | .relative: |
||
791 | cmp byte [ebx], 0 |
||
792 | jz .set_ok |
||
793 | cmp word [ebx], '.' |
||
794 | jz .set_ok |
||
795 | cmp word [ebx], './' |
||
796 | jnz @f |
||
797 | add ebx, 2 |
||
798 | jmp .relative |
||
799 | @@: |
||
800 | cmp word [ebx], '..' |
||
801 | jnz .doset_relative |
||
802 | cmp byte [ebx+2], 0 |
||
803 | jz @f |
||
804 | cmp byte [ebx+2], '/' |
||
805 | jnz .doset_relative |
||
806 | @@: |
||
807 | dec esi |
||
808 | cmp byte [esi], '/' |
||
809 | jnz @b |
||
810 | mov byte [esi], 0 |
||
811 | add ebx, 3 |
||
812 | jmp .relative |
||
813 | .doset_relative: |
||
814 | add edx, 0x1000 |
||
815 | mov byte [esi], '/' |
||
816 | inc esi |
||
817 | cmp esi, edx |
||
818 | jae .overflow_esi |
||
819 | @@: |
||
820 | mov al, [ebx] |
||
821 | inc ebx |
||
822 | mov [esi], al |
||
823 | inc esi |
||
824 | test al, al |
||
825 | jz .set_ok |
||
826 | cmp esi, edx |
||
827 | jb @b |
||
828 | .overflow_esi: |
||
829 | mov byte [esi-1], 0 ; force null-terminated string |
||
830 | .set_ok: |
||
831 | ret |
||
832 | .set_absolute: |
||
833 | lea esi, [ebx+1] |
||
834 | call process_replace_file_name |
||
835 | mov edi, edx |
||
836 | add edx, 0x1000 |
||
837 | .set_copy: |
||
838 | lodsb |
||
839 | stosb |
||
840 | test al, al |
||
841 | jz .set_part2 |
||
842 | .set_copy_cont: |
||
843 | cmp edi, edx |
||
844 | jb .set_copy |
||
845 | .overflow_edi: |
||
846 | mov byte [edi-1], 0 |
||
847 | ret |
||
848 | .set_part2: |
||
849 | mov esi, ebp |
||
850 | xor ebp, ebp |
||
851 | test esi, esi |
||
852 | jz .set_ok |
||
853 | mov byte [edi-1], '/' |
||
854 | jmp .set_copy_cont |