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Rev | Author | Line No. | Line |
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1 | ha | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; FAT12.INC ;; |
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4 | ;; (C) 2005 Mario79, License: GPL ;; |
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5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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7 | |||
8 | n_sector dd 0 ; temporary save for sector value |
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9 | flp_status dd 0 |
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10 | clust_tmp_flp dd 0 ; used by analyze_directory and analyze_directory_to_write |
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11 | path_pointer_flp dd 0 |
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12 | pointer_file_name_flp dd 0 |
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13 | save_root_flag db 0 |
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14 | save_flag db 0 |
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15 | root_read db 0 ; 0-necessary to load root, 1-not to load root |
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16 | flp_fat db 0 ; 0-necessary to load fat, 1-not to load fat |
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17 | flp_number db 0 ; 1- Floppy A, 2-Floppy B |
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18 | old_track db 0 ; old value track |
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19 | flp_label rb 15 ; Label and ID of inserted floppy disk |
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20 | |||
21 | reserve_flp: |
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22 | |||
23 | cli |
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24 | cmp [flp_status],0 |
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25 | je reserve_flp_ok |
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26 | |||
27 | sti |
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28 | call change_task |
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29 | jmp reserve_flp |
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30 | |||
31 | reserve_flp_ok: |
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32 | |||
33 | push eax |
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34 | mov eax,[0x3000] |
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35 | shl eax,5 |
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36 | mov eax,[eax+0x3000+4] |
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37 | mov [flp_status],eax |
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38 | pop eax |
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39 | sti |
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40 | ret |
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41 | |||
42 | floppy_free_space: |
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43 | ;--------------------------------------------- |
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44 | ; |
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45 | ; returns free space in edi |
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46 | ; |
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47 | ;--------------------------------------------- |
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48 | push eax ebx ecx |
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49 | call read_flp_fat |
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50 | cmp [FDC_Status],0 |
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51 | jne fdc_status_error_2 |
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52 | mov eax,0x282000 |
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53 | xor edi,edi |
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54 | mov ecx,2847 ;1448000/512 |
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55 | rdfs1_1: |
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56 | mov ebx,[eax] |
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57 | and ebx,4095 |
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58 | jne rdfs2_1 |
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59 | add edi,512 |
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60 | rdfs2_1: |
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61 | add eax,2 |
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62 | loop rdfs1_1 |
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63 | fdc_status_error_2: |
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64 | pop ecx ebx eax |
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65 | ret |
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66 | |||
67 | |||
68 | |||
69 | |||
70 | floppy_fileread: |
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71 | ;---------------------------------------------------------------- |
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72 | ; |
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73 | ; fileread - sys floppy |
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74 | ; |
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75 | ; eax points to filename 11 chars - for root directory |
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76 | ; ebx first wanted block ; 1+ ; if 0 then set to 1 |
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77 | ; ecx number of blocks to read ; 1+ ; if 0 then set to 1 |
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78 | ; edx mem location to return data |
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79 | ; esi length of filename 12*X |
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80 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
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81 | ; |
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82 | ; ret ebx = size or 0xffffffff file not found |
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83 | ; eax = 0 ok read or other = errormsg |
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84 | ; 10 = access denied |
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85 | ;-------------------------------------------------------------- |
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86 | |||
87 | mov [save_flag],0 |
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88 | mov [path_pointer_flp],edi |
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89 | cmp esi,0 ; return ramdisk root |
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90 | jne fr_noroot_1 |
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91 | cmp ebx,224/16 |
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92 | jbe fr_do_1 |
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93 | mov eax,5 |
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94 | mov ebx,0 |
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95 | mov [flp_status],0 |
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96 | ret |
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97 | |||
98 | fr_do_1: |
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99 | push ebx ecx edx |
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100 | call read_flp_root |
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101 | pop edx ecx ebx |
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102 | cmp [FDC_Status],0 |
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103 | jne fdc_status_error_1 |
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104 | mov edi,edx |
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105 | dec ebx |
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106 | shl ebx,9 |
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107 | mov esi,0x8000 |
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108 | add esi,ebx |
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109 | shl ecx,9 |
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110 | cld |
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111 | rep movsb |
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112 | mov eax,0 ; ok read |
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113 | mov ebx,0 |
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114 | mov [flp_status],0 |
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115 | ret |
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116 | fdc_status_error_1: |
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117 | mov [flp_status],0 |
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118 | mov eax,10 |
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119 | mov ebx,-1 |
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120 | ret |
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121 | |||
122 | fr_noroot_1: |
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123 | sub esp,32 |
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124 | call expand_filename |
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125 | frfloppy_1: |
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126 | cmp ebx,0 |
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127 | jne frfl5_1 |
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128 | mov ebx,1 |
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129 | frfl5_1: |
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130 | cmp ecx,0 |
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131 | jne frfl6_1 |
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132 | mov ecx,1 |
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133 | frfl6_1: |
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134 | dec ebx |
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135 | push eax |
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136 | push eax ebx ecx edx esi edi |
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137 | call read_flp_fat |
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138 | cmp [FDC_Status],0 |
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139 | jne fdc_status_error_3_1 |
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140 | mov [FDD_Track],0 ; Цилиндр |
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141 | mov [FDD_Head],1 ; Сторона |
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142 | mov [FDD_Sector],2 ; Сектор |
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143 | call SeekTrack |
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144 | mov dh,14 |
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145 | l.20_1: |
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146 | call ReadSectWithRetr |
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147 | cmp [FDC_Status],0 |
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148 | jne fdc_status_error_3_1 |
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149 | mov dl,16 |
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150 | mov edi,0xD000 |
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151 | inc [FDD_Sector] |
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152 | l.21_1: |
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153 | mov esi,eax ;Name of file we want |
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154 | mov ecx,11 |
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155 | cld |
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156 | rep cmpsb ;Found the file? |
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157 | je fifound_1 ;Yes |
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158 | add ecx,21 |
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159 | add edi, ecx ;Advance to next entry |
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160 | dec dl |
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161 | cmp dl,0 |
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162 | jne l.21_1 |
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163 | dec dh |
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164 | cmp dh,0 |
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165 | jne l.20_1 |
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166 | fdc_status_error_3: |
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167 | mov eax,5 ; file not found ? |
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168 | mov ebx,-1 |
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169 | add esp,32+28 |
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170 | mov [flp_status],0 |
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171 | ret |
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172 | fdc_status_error_3_2: |
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173 | cmp [FDC_Status],0 |
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174 | je fdc_status_error_3 |
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175 | fdc_status_error_3_1: |
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176 | add esp,32+28 |
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177 | jmp fdc_status_error_1 |
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178 | |||
179 | fifound_1: |
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180 | mov eax,[path_pointer_flp] |
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181 | cmp [eax+36],byte 0 |
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182 | je fifound_2 |
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183 | add edi,0xf |
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184 | mov eax,[edi] |
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185 | and eax,65535 |
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186 | mov ebx,[path_pointer_flp] |
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187 | add ebx,36 |
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188 | call get_cluster_of_a_path_flp |
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189 | jc fdc_status_error_3_2 |
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190 | mov ebx,[ebx-11+28] ;file size |
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191 | mov [esp+20],ebx |
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192 | mov [esp+24],ebx |
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193 | jmp fifound_3 |
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194 | fifound_2: |
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195 | mov ebx,[edi-11+28] ;file size |
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196 | mov [esp+20],ebx |
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197 | mov [esp+24],ebx |
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198 | add edi,0xf |
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199 | mov eax,[edi] |
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200 | fifound_3: |
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201 | and eax,65535 |
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202 | mov [n_sector],eax ;eax=cluster |
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203 | frnew_1: |
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204 | add eax,31 ;bootsector+2*fat+filenames |
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205 | cmp [esp+16],dword 0 ; wanted cluster ? |
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206 | jne frfl7_1 |
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207 | call read_chs_sector |
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208 | cmp [FDC_Status],0 |
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209 | jne fdc_status_error_5 |
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210 | mov edi,[esp+8] |
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211 | call give_back_application_data_1 |
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212 | add [esp+8],dword 512 |
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213 | dec dword [esp+12] ; last wanted cluster ? |
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214 | cmp [esp+12],dword 0 |
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215 | je frnoread_1 |
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216 | jmp frfl8_1 |
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217 | frfl7_1: |
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218 | dec dword [esp+16] |
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219 | frfl8_1: |
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220 | mov edi,[n_sector] |
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221 | shl edi,1 ;find next cluster from FAT |
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222 | add edi,0x282000 |
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223 | mov eax,[edi] |
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224 | and eax,4095 |
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225 | mov edi,eax |
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226 | mov [n_sector],edi |
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227 | cmp edi,4095 ;eof - cluster |
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228 | jz frnoread2_1 |
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229 | cmp [esp+24],dword 512 ;eof - size |
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230 | jb frnoread_1 |
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231 | sub [esp+24],dword 512 |
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232 | jmp frnew_1 |
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233 | |||
234 | read_chs_sector: |
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235 | call calculate_chs |
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236 | call ReadSectWithRetr |
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237 | ret |
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238 | |||
239 | frnoread2_1: |
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240 | cmp [esp+16],dword 0 ; eof without read ? |
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241 | je frnoread_1 |
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242 | mov [fdc_irq_func],fdc_null |
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243 | pop edi esi edx ecx |
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244 | add esp,4 |
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245 | pop ebx ; ebx <- eax : size of file |
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246 | add esp,36 |
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247 | mov eax,6 ; end of file |
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248 | mov [flp_status],0 |
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249 | ret |
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250 | |||
251 | frnoread_1: |
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252 | pop edi esi edx ecx |
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253 | add esp,4 |
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254 | pop ebx ; ebx <- eax : size of file |
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255 | add esp,36 |
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256 | mov eax,0 |
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257 | mov [flp_status],0 |
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258 | ret |
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259 | |||
260 | fdc_status_error_5: |
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261 | pop edi esi edx ecx |
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262 | add esp,4 |
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263 | pop ebx ; ebx <- eax : size of file |
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264 | add esp,36 |
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265 | jmp fdc_status_error_1 |
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266 | |||
267 | read_flp_root: |
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268 | pusha |
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269 | call check_label |
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270 | cmp [FDC_Status],0 |
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271 | jne unnecessary_root_read |
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272 | cmp [root_read],1 |
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273 | je unnecessary_root_read |
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274 | mov [FDD_Track],0 ; Цилиндр |
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275 | mov [FDD_Head],1 ; Сторона |
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276 | mov [FDD_Sector],2 ; Сектор |
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277 | mov edi,0x8000 |
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278 | call SeekTrack |
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279 | read_flp_root_1: |
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280 | call ReadSectWithRetr |
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281 | cmp [FDC_Status],0 |
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282 | jne unnecessary_root_read |
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283 | push edi |
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284 | call give_back_application_data_1 |
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285 | pop edi |
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286 | add edi,512 |
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287 | inc [FDD_Sector] |
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288 | cmp [FDD_Sector],16 |
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289 | jne read_flp_root_1 |
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290 | mov [root_read],1 |
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291 | unnecessary_root_read: |
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292 | popa |
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293 | ret |
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294 | |||
295 | |||
296 | read_flp_fat: |
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297 | pusha |
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298 | call check_label |
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299 | cmp [FDC_Status],0 |
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300 | jne unnecessary_flp_fat |
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301 | cmp [flp_fat],1 |
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302 | je unnecessary_flp_fat |
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303 | mov [FDD_Track],0 ; Цилиндр |
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304 | mov [FDD_Head],0 ; Сторона |
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305 | mov [FDD_Sector],2 ; Сектор |
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306 | mov edi,0x8000 |
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307 | call SeekTrack |
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308 | read_flp_fat_1: |
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309 | call ReadSectWithRetr |
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310 | cmp [FDC_Status],0 |
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311 | jne unnecessary_flp_fat |
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312 | push edi |
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313 | call give_back_application_data_1 |
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314 | pop edi |
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315 | add edi,512 |
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316 | inc [FDD_Sector] |
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317 | cmp [FDD_Sector],19 |
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318 | jne read_flp_fat_1 |
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319 | mov [FDD_Sector],1 |
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320 | mov [FDD_Head],1 |
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321 | call ReadSectWithRetr |
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322 | cmp [FDC_Status],0 |
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323 | jne unnecessary_flp_fat |
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324 | call give_back_application_data_1 |
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325 | call calculatefatchain_flp |
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326 | mov [root_read],0 |
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327 | mov [flp_fat],1 |
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328 | unnecessary_flp_fat: |
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329 | popa |
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330 | ret |
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331 | |||
332 | calculatefatchain_flp: |
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333 | pushad |
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334 | |||
335 | mov esi,0x8000 |
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336 | mov edi,0x282000 |
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337 | |||
338 | fcnew_1: |
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339 | mov eax,dword [esi] |
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340 | mov ebx,dword [esi+4] |
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341 | mov ecx,dword [esi+8] |
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342 | mov edx,ecx |
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343 | shr edx,4 ;8 ok |
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344 | shr dx,4 ;7 ok |
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345 | xor ch,ch |
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346 | shld ecx,ebx,20 ;6 ok |
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347 | shr cx,4 ;5 ok |
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348 | shld ebx,eax,12 |
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349 | and ebx,0x0fffffff ;4 ok |
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350 | shr bx,4 ;3 ok |
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351 | shl eax,4 |
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352 | and eax,0x0fffffff ;2 ok |
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353 | shr ax,4 ;1 ok |
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354 | mov dword [edi],eax |
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355 | add edi,4 |
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356 | mov dword [edi],ebx |
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357 | add edi,4 |
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358 | mov dword [edi],ecx |
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359 | add edi,4 |
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360 | mov dword [edi],edx |
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361 | add edi,4 |
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362 | add esi,12 |
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363 | |||
364 | cmp edi,0x282000+2856*2 ;2849 clusters |
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365 | jnz fcnew_1 |
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366 | |||
367 | popad |
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368 | ret |
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369 | |||
370 | check_label: |
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371 | pushad |
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372 | mov [FDD_Track],0 ; Цилиндр |
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373 | mov [FDD_Head],0 ; Сторона |
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374 | mov [FDD_Sector],1 ; Сектор |
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375 | call SetUserInterrupts |
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376 | call FDDMotorON |
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377 | call RecalibrateFDD |
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378 | cmp [FDC_Status],0 |
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379 | jne fdc_status_error |
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380 | call SeekTrack |
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381 | cmp [FDC_Status],0 |
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382 | jne fdc_status_error |
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383 | call ReadSectWithRetr |
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384 | cmp [FDC_Status],0 |
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385 | jne fdc_status_error |
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386 | mov esi,flp_label |
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387 | mov edi,0xD000+39 |
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388 | mov ecx,15 |
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389 | cld |
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390 | rep cmpsb |
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391 | je same_label |
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392 | mov [root_read],0 |
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393 | mov [flp_fat],0 |
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394 | same_label: |
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395 | mov esi,0xD000+39 |
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396 | mov edi,flp_label |
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397 | mov ecx,15 |
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398 | cld |
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399 | rep movsb |
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400 | popad |
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401 | ret |
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402 | fdc_status_error: |
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403 | popad |
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404 | ret |
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405 | |||
406 | save_flp_root: |
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407 | pusha |
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408 | call check_label |
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409 | cmp [FDC_Status],0 |
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410 | jne unnecessary_root_save |
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411 | cmp [root_read],0 |
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412 | je unnecessary_root_save |
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413 | mov [FDD_Track],0 ; Цилиндр |
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414 | mov [FDD_Head],1 ; Сторона |
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415 | mov [FDD_Sector],2 ; Сектор |
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416 | mov esi,0x8000 |
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417 | call SeekTrack |
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418 | save_flp_root_1: |
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419 | push esi |
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420 | call take_data_from_application_1 |
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421 | pop esi |
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422 | add esi,512 |
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423 | call WriteSectWithRetr |
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424 | cmp [FDC_Status],0 |
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425 | jne unnecessary_root_save |
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426 | inc [FDD_Sector] |
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427 | cmp [FDD_Sector],16 |
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428 | jne save_flp_root_1 |
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429 | unnecessary_root_save: |
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430 | mov [fdc_irq_func],fdc_null |
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431 | popa |
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432 | ret |
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433 | |||
434 | save_flp_fat: |
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435 | pusha |
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436 | call check_label |
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437 | cmp [FDC_Status],0 |
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438 | jne unnecessary_flp_fat_save |
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439 | cmp [flp_fat],0 |
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440 | je unnecessary_flp_fat_save |
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441 | call restorefatchain_flp |
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442 | mov [FDD_Track],0 ; Цилиндр |
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443 | mov [FDD_Head],0 ; Сторона |
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444 | mov [FDD_Sector],2 ; Сектор |
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445 | mov esi,0x8000 |
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446 | call SeekTrack |
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447 | save_flp_fat_1: |
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448 | push esi |
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449 | call take_data_from_application_1 |
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450 | pop esi |
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451 | add esi,512 |
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452 | call WriteSectWithRetr |
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453 | cmp [FDC_Status],0 |
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454 | jne unnecessary_flp_fat_save |
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455 | inc [FDD_Sector] |
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456 | cmp [FDD_Sector],19 |
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457 | jne save_flp_fat_1 |
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458 | mov [FDD_Sector],1 |
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459 | mov [FDD_Head],1 |
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460 | call take_data_from_application_1 |
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461 | call WriteSectWithRetr |
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462 | cmp [FDC_Status],0 |
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463 | jne unnecessary_flp_fat_save |
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464 | mov [root_read],0 |
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465 | unnecessary_flp_fat_save: |
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466 | mov [fdc_irq_func],fdc_null |
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467 | popa |
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468 | ret |
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469 | |||
470 | |||
471 | restorefatchain_flp: ; restore fat chain |
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472 | pushad |
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473 | |||
474 | mov esi,0x282000 |
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475 | mov edi,0x8000 |
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476 | |||
477 | fcnew2_1: |
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478 | mov eax,dword [esi] |
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479 | mov ebx,dword [esi+4] |
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480 | shl ax,4 |
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481 | shl eax,4 |
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482 | shl bx,4 |
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483 | shr ebx,4 |
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484 | shrd eax,ebx,8 |
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485 | shr ebx,8 |
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486 | mov dword [edi],eax |
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487 | add edi,4 |
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488 | mov word [edi],bx |
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489 | add edi,2 |
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490 | add esi,8 |
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491 | |||
492 | cmp edi,0x8000+0x1200 ;4274 bytes - all used FAT |
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493 | jb fcnew2_1 |
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494 | |||
495 | mov esi,0x8000 ; duplicate fat chain |
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496 | mov edi,0x8000+0x1200 |
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497 | mov ecx,0x1200/4 |
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498 | cld |
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499 | rep movsd |
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500 | |||
501 | popad |
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502 | ret |
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503 | |||
504 | |||
505 | floppy_filedelete: |
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506 | ;-------------------------------------------- |
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507 | ; |
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508 | ; filedelete - sys floppy |
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509 | ; in: |
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510 | ; eax - filename 11 chars - for root directory |
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511 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
||
512 | ; |
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513 | ; out: |
||
514 | ; eax - 0 = successful, 1 = file not found, 10 = access denied |
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515 | ; |
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516 | ;-------------------------------------------- |
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517 | mov [path_pointer_flp],edi |
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518 | mov [save_flag],0 |
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519 | mov ebp,1 ; file not found as default |
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520 | filedelete_newtry_1: |
||
521 | sub esp,32 |
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522 | call expand_filename |
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523 | push eax ebx ecx edx esi edi |
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524 | call read_flp_fat |
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525 | cmp [FDC_Status],0 |
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526 | jne frnoreadd_1 |
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527 | mov [FDD_Track],0 ; Цилиндр |
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528 | mov [FDD_Head],1 ; Сторона |
||
529 | mov [FDD_Sector],2 ; Сектор |
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530 | call SeekTrack |
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531 | mov dh,14 |
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532 | l.20_2: |
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533 | call ReadSectWithRetr |
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534 | cmp [FDC_Status],0 |
||
535 | jne fdc_status_error_4 |
||
536 | mov dl,16 |
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537 | mov edi,0xD000 |
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538 | inc [FDD_Sector] |
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539 | l.21_2: |
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540 | mov esi,eax ;Name of file we want |
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541 | mov ecx,11 |
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542 | cld |
||
543 | rep cmpsb ;Found the file? |
||
544 | je fifoundd_1 ;Yes |
||
545 | add ecx,21 |
||
546 | add edi, ecx ;Advance to next entry |
||
547 | dec dl |
||
548 | jne l.21_2 |
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549 | dec dh |
||
550 | jne l.20_2 |
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551 | jmp frnoreadd_1 |
||
552 | |||
553 | fdc_status_error_4: |
||
554 | pop edi esi edx ecx ebx eax |
||
555 | add esp,32 |
||
556 | jmp fdc_status_error_1 |
||
557 | |||
558 | fifoundd_1: |
||
559 | mov eax,[path_pointer_flp] |
||
560 | cmp [eax+36],byte 0 |
||
561 | je fifoundd_2 |
||
83 | diamond | 562 | movzx eax, word [edi+0xf] |
1 | ha | 563 | mov ebx,[path_pointer_flp] |
564 | add ebx,36 |
||
565 | call get_cluster_of_a_path_flp |
||
566 | jc frnoreadd_1_1 |
||
567 | mov edi,ebx |
||
568 | add edi,11 |
||
569 | jmp fifoundd_2_1 |
||
570 | fifoundd_2: |
||
571 | dec [FDD_Sector] |
||
572 | fifoundd_2_1: |
||
573 | mov [edi-11],byte 0xE5 ;mark filename deleted |
||
83 | diamond | 574 | movzx edi, word [edi+0xf] ;edi = cluster |
1 | ha | 575 | frnewd_1: |
576 | shl edi,1 ;find next cluster from FAT |
||
577 | add edi,0x282000 |
||
578 | mov eax,[edi] |
||
579 | mov [edi],word 0x0 ;clear fat chain cluster |
||
580 | and eax,4095 |
||
581 | mov edi,eax |
||
582 | cmp edi,dword 4095 ;last cluster ? |
||
583 | jz frnoreadd2_1 |
||
584 | jmp frnewd_1 |
||
585 | |||
586 | frnoreadd2_1: |
||
587 | call WriteSectWithRetr |
||
588 | cmp [FDC_Status],0 |
||
589 | jne fdc_status_error_4 |
||
590 | call save_flp_fat |
||
591 | cmp [FDC_Status],0 |
||
592 | jne fdc_status_error_4 |
||
593 | ; pop edi esi edx ecx ebx eax |
||
594 | ; add esp,32 |
||
595 | mov ebp,0 ; file found |
||
596 | ; jmp filedelete_newtry_1 |
||
597 | jmp frnoreadd_1 |
||
598 | |||
599 | frnoreadd_1_1: |
||
600 | cmp [FDC_Status],0 |
||
601 | jne fdc_status_error_4 |
||
602 | frnoreadd_1: |
||
603 | pop edi esi edx ecx ebx eax |
||
604 | add esp,32 |
||
605 | mov eax,ebp |
||
606 | ret |
||
607 | |||
608 | floppy_filesave: |
||
609 | ;---------------------------------------------------------- |
||
610 | ; |
||
611 | ; filesave - sys floppy |
||
612 | ; |
||
613 | ; eax ; pointer to file name 11 chars - for root directory |
||
614 | ; ebx ; buffer |
||
615 | ; ecx ; count to write in bytes |
||
616 | ; edx ; 0 create new , 1 append |
||
617 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
||
618 | ; |
||
619 | ; output : eax = 0 - ok |
||
620 | ; 5 - file not found / directory not found |
||
621 | ; 8 - disk full |
||
622 | ; 10 - access denied |
||
623 | ;----------------------------------------------------------- |
||
624 | mov [path_pointer_flp],edi |
||
625 | sub esp,32 |
||
626 | call expand_filename |
||
627 | cmp edx,0 |
||
628 | jnz fsdel_1 |
||
629 | pusha |
||
630 | call floppy_filedelete |
||
631 | cmp [FDC_Status],0 |
||
632 | jne fdc_status_error_6 |
||
633 | popa |
||
634 | mov [save_flag],1 |
||
635 | fsdel_1: |
||
636 | call floppy_free_space |
||
637 | cmp [FDC_Status],0 |
||
638 | jne fdc_status_error_6 |
||
639 | cmp ecx,edi |
||
640 | jb rd_do_save_1 |
||
641 | add esp,32 |
||
642 | mov eax,8 ; not enough free space |
||
643 | mov [flp_status],0 |
||
644 | ret |
||
645 | |||
646 | fdc_status_error_6: |
||
647 | popa |
||
648 | add esp,32 |
||
649 | jmp fdc_status_error_1 |
||
650 | |||
651 | rd_do_save_1: |
||
652 | push eax ebx ecx edx esi edi |
||
653 | call read_flp_fat |
||
654 | cmp [FDC_Status],0 |
||
655 | jne fdc_status_error_7 |
||
656 | push eax |
||
657 | mov eax,[path_pointer_flp] |
||
658 | cmp [eax+36],byte 0 |
||
659 | jne fifoundds_2 |
||
660 | pop eax |
||
661 | mov [save_root_flag],1 |
||
662 | call read_flp_root |
||
663 | cmp [FDC_Status],0 |
||
664 | jne fdc_status_error_7 |
||
665 | mov edi,0x8000 ;Point at directory |
||
666 | mov edx,224 +1 |
||
667 | ; find an empty spot for filename in the root dir |
||
668 | l20ds_1: |
||
669 | sub edx,1 |
||
83 | diamond | 670 | jz frnoreadds_1 |
1 | ha | 671 | l21ds_1: |
672 | cmp [edi],byte 0xE5 |
||
673 | jz fifoundds_1 |
||
674 | cmp [edi],byte 0x0 |
||
675 | jz fifoundds_1 |
||
676 | add edi,32 ; Advance to next entry |
||
677 | jmp l20ds_1 |
||
678 | |||
679 | fifoundds_2: |
||
680 | pop eax |
||
681 | mov [save_root_flag],0 |
||
682 | mov [FDD_Track],0 ; Цилиндр |
||
683 | mov [FDD_Head],1 ; Сторона |
||
684 | mov [FDD_Sector],2 ; Сектор |
||
685 | call SeekTrack |
||
686 | mov dh,14 |
||
687 | l.20_3: |
||
688 | call ReadSectWithRetr |
||
689 | cmp [FDC_Status],0 |
||
690 | jne fdc_status_error_7 |
||
691 | mov dl,16 |
||
692 | mov edi,0xD000 |
||
693 | inc [FDD_Sector] |
||
694 | l.21_3: |
||
695 | mov esi,eax ;Name of file we want |
||
696 | mov ecx,11 |
||
697 | cld |
||
698 | rep cmpsb ;Found the file? |
||
699 | je fifoundds_3 ;Yes |
||
700 | add ecx,21 |
||
701 | add edi, ecx ;Advance to next entry |
||
702 | dec dl |
||
703 | jne l.21_3 |
||
704 | dec dh |
||
705 | jne l.20_3 |
||
706 | fdc_status_error_8: |
||
707 | pop edi esi edx ecx ebx eax |
||
708 | mov eax,5 ; file not found ? |
||
709 | mov ebx,-1 |
||
710 | add esp,32 |
||
711 | mov [flp_status],0 |
||
712 | ret |
||
713 | |||
714 | fifoundds_3: |
||
715 | add edi,0xf |
||
716 | mov eax,[edi] |
||
717 | and eax,65535 |
||
718 | mov ebx,[path_pointer_flp] |
||
719 | add ebx,36 |
||
720 | call get_cluster_of_a_path_flp |
||
721 | jc fdc_status_error_7_1 |
||
722 | found_directory_for_writing_flp: |
||
723 | call analyze_directory_to_write_flp |
||
724 | jc fdc_status_error_7_1 |
||
725 | mov edi,ebx |
||
726 | fifoundds_1: |
||
727 | push edi ; move the filename to root dir |
||
728 | mov esi,[esp+4+20] |
||
729 | cmp [save_root_flag],0 |
||
730 | jne fifoundds_4 |
||
731 | mov esi,[pointer_file_name_flp] |
||
732 | fifoundds_4: |
||
733 | mov ecx,11 |
||
734 | cld |
||
735 | rep movsb |
||
736 | pop edi |
||
737 | mov edx,edi |
||
738 | add edx,11+0xf ; edx <- cluster save position |
||
739 | mov ebx,[esp+12] ; save file size |
||
740 | mov [edi+28],ebx |
||
741 | mov [edi+11],byte 0x20 ; attribute |
||
742 | call get_date_for_file ; from FAT32.INC |
||
743 | mov [edi+24],ax ; date |
||
744 | mov [edi+18],ax ; date |
||
745 | call get_time_for_file ; from FAT32.INC |
||
746 | mov [edi+22],ax ; time |
||
747 | xor ax,ax |
||
748 | mov [edi+20],ax |
||
749 | mov ebx,1 ; first cluster |
||
750 | cmp [save_root_flag],0 |
||
751 | jne frnewds_1 |
||
752 | call frnewds_2 |
||
753 | pusha |
||
754 | call WriteSectWithRetr |
||
755 | popa |
||
756 | cmp [FDC_Status],0 |
||
757 | jne fdc_status_error_7 |
||
758 | jmp frnewds_3 |
||
759 | |||
760 | frnewds_1: |
||
761 | call frnewds_2 |
||
762 | frnewds_3: |
||
763 | pusha ; move save to floppy cluster |
||
764 | add ebx,31 |
||
765 | mov eax,ebx |
||
766 | mov esi,[esp+32+16] |
||
767 | call take_data_from_application_1 |
||
768 | call save_chs_sector |
||
769 | cmp [FDC_Status],0 |
||
770 | jne fdc_status_error_7 |
||
771 | popa |
||
772 | mov eax,[esp+12] |
||
773 | cmp eax,512 |
||
774 | jb flnsa_1 |
||
775 | sub eax,512 |
||
776 | mov [esp+12],eax |
||
777 | mov eax,[esp+16] |
||
778 | add eax,512 |
||
779 | mov [esp+16],eax |
||
780 | jmp frnewds_1 |
||
781 | |||
782 | frnewds_2: |
||
783 | add ebx,1 |
||
784 | mov edi,ebx ; find free cluster in FAT |
||
785 | shl edi,1 |
||
786 | add edi,0x282000 |
||
787 | mov eax,[edi] |
||
788 | and eax,4095 |
||
789 | jnz frnewds_2 |
||
790 | mov [edx],bx ; save next cluster pos. to prev cl. |
||
791 | mov edx,edi ; next save pos abs mem add |
||
792 | ret |
||
793 | |||
794 | flnsa_1: |
||
795 | mov [edi],word 4095 ; mark end of file - last cluster |
||
796 | cmp [save_root_flag],1 |
||
797 | jne flnsa_2 |
||
798 | call save_flp_root |
||
799 | cmp [FDC_Status],0 |
||
800 | jne fdc_status_error_7 |
||
801 | flnsa_2: |
||
802 | call save_flp_fat |
||
803 | cmp [FDC_Status],0 |
||
804 | jne fdc_status_error_7 |
||
805 | frnoreadds_1: |
||
806 | pop edi esi edx ecx ebx eax |
||
807 | add esp,32 |
||
808 | mov eax,0 |
||
809 | mov [flp_status],0 |
||
810 | ret |
||
811 | |||
812 | fdc_status_error_7_1: |
||
813 | cmp [FDC_Status],0 |
||
814 | je fdc_status_error_8 |
||
815 | fdc_status_error_7: |
||
816 | pop edi esi edx ecx ebx eax |
||
817 | add esp,32 |
||
818 | jmp fdc_status_error_1 |
||
819 | |||
820 | save_chs_sector: |
||
821 | call calculate_chs |
||
822 | call WriteSectWithRetr |
||
823 | ret |
||
824 | |||
825 | calculate_chs: |
||
826 | mov bl,[FDD_Track] |
||
827 | mov [old_track],bl |
||
828 | mov ebx,18 |
||
829 | xor edx,edx |
||
830 | div ebx |
||
831 | inc edx |
||
832 | mov [FDD_Sector],dl |
||
833 | xor edx,edx |
||
834 | mov ebx,2 |
||
835 | div ebx |
||
836 | mov [FDD_Track],al |
||
837 | mov [FDD_Head],0 |
||
838 | cmp edx,0 |
||
839 | je no_head_2 |
||
840 | inc [FDD_Head] |
||
841 | no_head_2: |
||
842 | mov dl,[old_track] |
||
843 | cmp dl,[FDD_Track] |
||
844 | je no_seek_track_1 |
||
845 | call SeekTrack |
||
846 | no_seek_track_1: |
||
847 | ret |
||
848 | |||
849 | |||
850 | get_cluster_of_a_path_flp: |
||
851 | ;--------------------------------------------------------- |
||
852 | ; input : EBX = pointer to a path string |
||
853 | ; (example: the path "/files/data/document" become |
||
854 | ; "files......data.......document...0" |
||
855 | ; '.' = space char |
||
856 | ; '0' = char(0) (ASCII=0) !!! ) |
||
857 | ; output : if (CARRY=1) -> ERROR in the PATH |
||
858 | ; if (CARRY=0) -> EAX=cluster |
||
859 | ;--------------------------------------------------------- |
||
860 | |||
861 | push edx |
||
862 | mov edx,ebx |
||
863 | |||
864 | search_end_of_path_flp: |
||
865 | cmp [save_flag],0 |
||
866 | jne search_end_of_path_flp_1 |
||
867 | cmp byte [edx],0 |
||
868 | je found_end_of_path_flp |
||
869 | jmp search_end_of_path_flp_2 |
||
870 | search_end_of_path_flp_1: |
||
871 | cmp byte [edx+12],0 |
||
872 | je found_end_of_path_flp |
||
873 | search_end_of_path_flp_2: |
||
874 | inc edx ; '/' |
||
875 | call analyze_directory_flp |
||
876 | jc directory_not_found_flp |
||
877 | |||
878 | mov eax,[ebx+20-2] ; read the HIGH 16bit cluster field |
||
879 | mov ax,[ebx+26] ; read the LOW 16bit cluster field |
||
880 | and eax,0xfff ;[fatMASK] |
||
881 | add edx,11 ; 8+3 (name+extension) |
||
882 | jmp search_end_of_path_flp |
||
883 | |||
884 | found_end_of_path_flp: |
||
885 | inc edx |
||
886 | mov [pointer_file_name_flp],edx |
||
887 | pop edx |
||
888 | clc ; no errors |
||
889 | ret |
||
890 | |||
891 | directory_not_found_flp: |
||
892 | pop edx |
||
893 | stc ; errors occour |
||
894 | ret |
||
895 | |||
896 | analyze_directory_flp: |
||
897 | ;-------------------------------- |
||
898 | ; input : EAX = first cluster of the directory |
||
899 | ; EBX = pointer to filename |
||
900 | ; output : IF CARRY=0 EAX = sector where th file is found |
||
901 | ; EBX = pointer in buffer |
||
902 | ; [buffer .. buffer+511] |
||
903 | ; ECX,EDX,EDI,EDI not changed |
||
904 | ; IF CARRY=1 |
||
905 | ;-------------------------------- |
||
906 | push ebx ;[esp+16] |
||
907 | push ecx |
||
908 | push edx |
||
909 | push esi |
||
910 | push edi |
||
911 | |||
912 | |||
913 | adr56_flp: |
||
914 | mov [clust_tmp_flp],eax |
||
915 | add eax,31 |
||
916 | pusha |
||
917 | call read_chs_sector |
||
918 | popa |
||
919 | cmp [FDC_Status],0 |
||
920 | jne not_found_file_analyze_flp |
||
921 | |||
922 | mov ecx,512/32 |
||
923 | mov ebx,0xD000 |
||
924 | |||
925 | adr1_analyze_flp: |
||
926 | mov esi,edx ;[esp+16] |
||
927 | mov edi,ebx |
||
928 | cld |
||
929 | push ecx |
||
930 | mov ecx,11 |
||
931 | rep cmpsb |
||
932 | pop ecx |
||
933 | je found_file_analyze_flp |
||
934 | |||
935 | add ebx,32 |
||
936 | loop adr1_analyze_flp |
||
937 | |||
938 | mov eax,[clust_tmp_flp] |
||
939 | shl eax,1 ;find next cluster from FAT |
||
940 | add eax,0x282000 |
||
941 | mov eax,[eax] |
||
942 | and eax,4095 |
||
943 | cmp eax,0x0ff8 |
||
944 | jb adr56_flp |
||
945 | not_found_file_analyze_flp: |
||
946 | pop edi |
||
947 | pop esi |
||
948 | pop edx |
||
949 | pop ecx |
||
950 | add esp,4 |
||
951 | stc ;file not found |
||
952 | ret |
||
953 | |||
954 | found_file_analyze_flp: |
||
955 | pop edi |
||
956 | pop esi |
||
957 | pop edx |
||
958 | pop ecx |
||
959 | add esp,4 |
||
960 | clc ;file found |
||
961 | ret |
||
962 | |||
963 | |||
964 | analyze_directory_to_write_flp: |
||
965 | ;-------------------------------- |
||
966 | ; input : EAX = first cluster of the directory |
||
967 | ; output : IF CARRY=0 EAX = sector where the file is found |
||
968 | ; EBX = pointer in buffer |
||
969 | ; [buffer .. buffer+511] |
||
970 | ; ECX,EDX,EDI,EDI not changed |
||
971 | ; IF CARRY=1 |
||
972 | ;-------------------------------- |
||
973 | |||
974 | push ecx |
||
975 | push edx |
||
976 | push esi |
||
977 | |||
978 | adr561: |
||
979 | mov [clust_tmp_flp],eax |
||
980 | add eax,31 |
||
981 | pusha |
||
982 | call read_chs_sector |
||
983 | popa |
||
984 | cmp [FDC_Status],0 |
||
985 | jne error_found_file_analyze1 |
||
986 | |||
987 | mov ecx,512/32 |
||
988 | mov ebx,0xD000 |
||
989 | |||
990 | adr1_analyze1: |
||
991 | cmp byte [ebx],0x00 |
||
992 | je found_file_analyze1 |
||
993 | cmp byte [ebx],0xe5 |
||
994 | je found_file_analyze1 |
||
995 | |||
996 | avanti: |
||
997 | add ebx,32 |
||
998 | loop adr1_analyze1 |
||
999 | |||
1000 | mov eax,[clust_tmp_flp] |
||
1001 | shl eax,1 ;find next cluster from FAT |
||
1002 | add eax,0x282000 |
||
1003 | mov eax,[eax] |
||
1004 | and eax,4095 |
||
1005 | cmp eax,0x0ff8 |
||
1006 | jb adr561 |
||
1007 | |||
1008 | call get_free_FAT ;this block of code add a new cluster |
||
1009 | ;for the directory because the directory |
||
1010 | ;is full |
||
1011 | |||
1012 | mov [edi],word 0x0fff |
||
1013 | |||
1014 | mov eax,[clust_tmp_flp] |
||
1015 | shl eax,1 ;find next cluster from FAT |
||
1016 | add eax,0x282000 |
||
1017 | sub edi,0x282000 |
||
1018 | mov [eax],di |
||
1019 | |||
1020 | pusha |
||
1021 | mov ecx,512/4 |
||
1022 | xor eax,eax |
||
1023 | mov edi,0xD000 |
||
1024 | cld |
||
1025 | rep stosd |
||
1026 | popa |
||
1027 | |||
1028 | mov eax,edi |
||
1029 | add eax,31 |
||
1030 | pusha |
||
1031 | call save_chs_sector |
||
1032 | popa |
||
1033 | cmp [FDC_Status],0 |
||
1034 | jne error_found_file_analyze1 |
||
1035 | mov ebx,0xD000 |
||
1036 | |||
1037 | found_file_analyze1: |
||
1038 | |||
1039 | pop esi |
||
1040 | pop edx |
||
1041 | pop ecx |
||
1042 | clc ;file found |
||
1043 | ret |
||
1044 | |||
1045 | error_found_file_analyze1: |
||
1046 | pop esi |
||
1047 | pop edx |
||
1048 | pop ecx |
||
1049 | stc |
||
1050 | ret |
||
1051 | |||
1052 | get_free_FAT_flp: |
||
1053 | ;------------------------------------------ |
||
1054 | ; input : EAX = # cluster for start the searching |
||
1055 | ; output : EAX = # first cluster found free |
||
1056 | ;------------------------------------------- |
||
1057 | push ebx |
||
1058 | |||
1059 | mov ebx,1 |
||
1060 | check_new_flp: |
||
1061 | add ebx,1 |
||
1062 | mov edi,ebx ; find free cluster in FAT |
||
1063 | shl edi,1 |
||
1064 | add edi,0x282000 |
||
1065 | mov eax,[edi] |
||
1066 | and eax,4095 |
||
1067 | cmp eax,0x0 |
||
1068 | jnz check_new_flp |
||
1069 | |||
1070 | pop ebx |
||
1071 | ret |
||
71 | diamond | 1072 | |
1073 | ; \begin{diamond} |
||
83 | diamond | 1074 | fat_find_lfn: |
71 | diamond | 1075 | ; in: esi->name |
83 | diamond | 1076 | ; [esp+4] = next |
1077 | ; [esp+8] = first |
||
1078 | ; [esp+C]... - possibly parameters for first and next |
||
71 | diamond | 1079 | ; out: CF=1 - file not found |
83 | diamond | 1080 | ; else CF=0, esi->next name component, edi->direntry |
75 | diamond | 1081 | pusha |
83 | diamond | 1082 | lea eax, [esp+0Ch+20h] |
1083 | call dword [eax-4] |
||
1084 | jc .reterr |
||
75 | diamond | 1085 | sub esp, 262*2 ; reserve place for LFN |
1086 | mov ebp, esp |
||
1087 | push 0 ; for fat_get_name: read ASCII name |
||
83 | diamond | 1088 | .l1: |
75 | diamond | 1089 | call fat_get_name |
83 | diamond | 1090 | jc .l2 |
75 | diamond | 1091 | call fat_compare_name |
1092 | jz .found |
||
83 | diamond | 1093 | .l2: |
1094 | lea eax, [esp+0Ch+20h+262*2+4] |
||
1095 | call dword [eax-8] |
||
1096 | jnc .l1 |
||
75 | diamond | 1097 | add esp, 262*2+4 |
83 | diamond | 1098 | .reterr: |
1099 | stc |
||
75 | diamond | 1100 | popa |
1101 | ret |
||
71 | diamond | 1102 | .found: |
83 | diamond | 1103 | add esp, 262*2+4 |
1104 | ; if this is LFN entry, advance to true entry |
||
75 | diamond | 1105 | cmp byte [edi+11], 0xF |
83 | diamond | 1106 | jnz @f |
1107 | lea eax, [esp+0Ch+20h] |
||
1108 | call dword [eax-8] |
||
1109 | jc .reterr |
||
1110 | @@: |
||
1111 | add esp, 8 ; CF=0 |
||
1112 | push esi |
||
1113 | push edi |
||
1114 | popa |
||
1115 | ret |
||
1116 | |||
1117 | flp_root_next: |
||
1118 | cmp edi, 0xD200-0x20 |
||
1119 | jae @f |
||
75 | diamond | 1120 | add edi, 0x20 |
83 | diamond | 1121 | ret ; CF=0 |
1122 | @@: |
||
1123 | ; read next sector |
||
1124 | inc dword [eax] |
||
1125 | cmp dword [eax], 14 |
||
1126 | jae flp_root_first.readerr |
||
1127 | flp_root_first: |
||
1128 | mov eax, [eax] |
||
1129 | pusha |
||
1130 | add eax, 19 |
||
75 | diamond | 1131 | call read_chs_sector |
83 | diamond | 1132 | popa |
75 | diamond | 1133 | cmp [FDC_Status], 0 |
83 | diamond | 1134 | jnz .readerr |
75 | diamond | 1135 | mov edi, 0xD000 |
83 | diamond | 1136 | ret ; CF=0 |
1137 | .readerr: |
||
1138 | stc |
||
1139 | ret |
||
1140 | |||
1141 | flp_rootmem_first: |
||
1142 | mov edi, 0x8000 |
||
1143 | clc |
||
1144 | ret |
||
1145 | flp_rootmem_next: |
||
1146 | add edi, 0x20 |
||
1147 | cmp edi, 0x8000+14*0x200 |
||
1148 | cmc |
||
1149 | flp_rootmem_next_write: |
||
1150 | flp_rootmem_begin_write: |
||
1151 | flp_rootmem_end_write: |
||
1152 | ret |
||
1153 | flp_rootmem_extend_dir: |
||
1154 | stc |
||
1155 | ret |
||
1156 | |||
1157 | flp_notroot_next: |
||
1158 | cmp edi, 0xD200-0x20 |
||
1159 | jae flp_notroot_next_sector |
||
1160 | add edi, 0x20 |
||
1161 | ret ; CF=0 |
||
1162 | flp_notroot_next_sector: |
||
1163 | push ecx |
||
1164 | mov ecx, [eax] |
||
1165 | mov ecx, [ecx*2+0x282000] |
||
1166 | and ecx, 0xFFF |
||
1167 | cmp ecx, 2849 |
||
1168 | jae flp_notroot_first.err2 |
||
1169 | mov [eax], ecx |
||
1170 | pop ecx |
||
1171 | flp_notroot_first: |
||
1172 | mov eax, [eax] |
||
1173 | cmp eax, 2 |
||
1174 | jb .err |
||
1175 | cmp eax, 2849 |
||
1176 | jae .err |
||
1177 | pusha |
||
75 | diamond | 1178 | add eax, 31 |
83 | diamond | 1179 | call read_chs_sector |
1180 | popa |
||
1181 | mov edi, 0xD000 |
||
1182 | cmp [FDC_Status], 0 |
||
1183 | jnz .err |
||
1184 | ret ; CF=0 |
||
1185 | .err2: |
||
1186 | pop ecx |
||
1187 | .err: |
||
1188 | stc |
||
75 | diamond | 1189 | ret |
83 | diamond | 1190 | flp_notroot_begin_write: |
1191 | pusha |
||
1192 | mov eax, [eax] |
||
1193 | add eax, 31 |
||
1194 | call read_chs_sector |
||
1195 | popa |
||
1196 | ret |
||
1197 | flp_notroot_end_write: |
||
1198 | pusha |
||
1199 | mov eax, [eax] |
||
1200 | add eax, 31 |
||
1201 | call save_chs_sector |
||
1202 | popa |
||
1203 | ret |
||
1204 | flp_notroot_next_write: |
||
1205 | cmp edi, 0xD200 |
||
1206 | jae @f |
||
1207 | ret |
||
1208 | @@: |
||
1209 | call flp_notroot_end_write |
||
1210 | jmp flp_notroot_next_sector |
||
1211 | flp_notroot_extend_dir: |
||
1212 | ; find free cluster in FAT |
||
1213 | pusha |
||
1214 | xor eax, eax |
||
1215 | mov edi, 0x282000 |
||
1216 | mov ecx, 2849 |
||
1217 | repnz scasw |
||
1218 | jnz .notfound |
||
1219 | mov word [edi-2], 0xFFF ; mark as last cluster |
||
1220 | sub edi, 0x282000 |
||
1221 | shr edi, 1 |
||
1222 | dec edi |
||
1223 | mov eax, [esp+28] |
||
1224 | mov ecx, [eax] |
||
1225 | mov [0x282000+ecx*2], di |
||
1226 | mov [eax], edi |
||
1227 | xor eax, eax |
||
1228 | mov edi, 0xD000 |
||
1229 | mov ecx, 128 |
||
1230 | rep stosd |
||
1231 | popa |
||
1232 | call flp_notroot_end_write |
||
1233 | mov edi, 0xD000 |
||
1234 | clc |
||
1235 | ret |
||
1236 | .notfound: |
||
1237 | popa |
||
1238 | stc |
||
1239 | ret |
||
71 | diamond | 1240 | |
83 | diamond | 1241 | fd_find_lfn: |
1242 | ; in: esi->name |
||
1243 | ; out: CF=1 - file not found |
||
86 | diamond | 1244 | ; else CF=0 and edi->direntry, eax=directory cluster (0 for root) |
83 | diamond | 1245 | push esi edi |
1246 | push 0 |
||
1247 | push flp_root_first |
||
1248 | push flp_root_next |
||
1249 | .loop: |
||
1250 | call fat_find_lfn |
||
1251 | jc .notfound |
||
1252 | cmp byte [esi], 0 |
||
1253 | jz .found |
||
1254 | test byte [edi+11], 10h |
||
1255 | jz .notfound |
||
1256 | movzx eax, word [edi+26] ; cluster |
||
1257 | mov [esp+8], eax |
||
1258 | mov dword [esp+4], flp_notroot_first |
||
1259 | mov dword [esp], flp_notroot_next |
||
1260 | jmp .loop |
||
1261 | .notfound: |
||
1262 | add esp, 12 |
||
1263 | pop edi esi |
||
1264 | stc |
||
1265 | ret |
||
1266 | .found: |
||
86 | diamond | 1267 | mov eax, [esp+8] |
83 | diamond | 1268 | add esp, 16 ; CF=0 |
1269 | pop esi |
||
1270 | ret |
||
1271 | |||
71 | diamond | 1272 | ;---------------------------------------------------------------- |
1273 | ; |
||
1274 | ; fs_FloppyRead - LFN variant for reading floppy |
||
1275 | ; |
||
1276 | ; esi points to filename |
||
1277 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
||
1278 | ; may be ebx=0 - start from first byte |
||
1279 | ; ecx number of bytes to read, 0+ |
||
1280 | ; edx mem location to return data |
||
1281 | ; |
||
77 | diamond | 1282 | ; ret ebx = bytes read or 0xffffffff file not found |
71 | diamond | 1283 | ; eax = 0 ok read or other = errormsg |
1284 | ; |
||
1285 | ;-------------------------------------------------------------- |
||
1286 | fs_FloppyRead: |
||
75 | diamond | 1287 | call read_flp_fat |
1288 | cmp byte [esi], 0 |
||
1289 | jnz @f |
||
1290 | or ebx, -1 |
||
1291 | mov eax, 10 ; access denied |
||
1292 | ret |
||
71 | diamond | 1293 | @@: |
75 | diamond | 1294 | push edi |
1295 | call fd_find_lfn |
||
1296 | jnc .found |
||
1297 | pop edi |
||
1298 | or ebx, -1 |
||
1299 | mov eax, 5 ; file not found |
||
1300 | ret |
||
71 | diamond | 1301 | .found: |
75 | diamond | 1302 | test ebx, ebx |
1303 | jz .l1 |
||
1304 | cmp dword [ebx+4], 0 |
||
1305 | jz @f |
||
77 | diamond | 1306 | xor ebx, ebx |
71 | diamond | 1307 | .reteof: |
75 | diamond | 1308 | mov eax, 6 ; EOF |
1309 | pop edi |
||
1310 | ret |
||
71 | diamond | 1311 | @@: |
75 | diamond | 1312 | mov ebx, [ebx] |
71 | diamond | 1313 | .l1: |
77 | diamond | 1314 | push ecx edx |
1315 | push 0 |
||
1316 | mov eax, [edi+28] |
||
1317 | sub eax, ebx |
||
1318 | jb .eof |
||
1319 | cmp eax, ecx |
||
1320 | jae @f |
||
1321 | mov ecx, eax |
||
1322 | mov byte [esp], 6 ; EOF |
||
1323 | @@: |
||
75 | diamond | 1324 | movzx edi, word [edi+26] |
71 | diamond | 1325 | .new: |
75 | diamond | 1326 | jecxz .done |
1327 | test edi, edi |
||
1328 | jz .eof |
||
1329 | cmp edi, 0xFF8 |
||
1330 | jae .eof |
||
113 | diamond | 1331 | sub ebx, 512 |
1332 | jae .skip |
||
77 | diamond | 1333 | lea eax, [edi+31] |
75 | diamond | 1334 | pusha |
1335 | call read_chs_sector |
||
1336 | popa |
||
1337 | cmp [FDC_Status], 0 |
||
1338 | jnz .err |
||
77 | diamond | 1339 | lea eax, [0xD000+ebx+512] |
75 | diamond | 1340 | neg ebx |
1341 | push ecx |
||
1342 | cmp ecx, ebx |
||
1343 | jbe @f |
||
1344 | mov ecx, ebx |
||
71 | diamond | 1345 | @@: |
75 | diamond | 1346 | mov ebx, edx |
1347 | call memmove |
||
1348 | add edx, ecx |
||
1349 | sub [esp], ecx |
||
1350 | pop ecx |
||
1351 | xor ebx, ebx |
||
71 | diamond | 1352 | .skip: |
75 | diamond | 1353 | movzx edi, word [edi*2+0x282000] |
1354 | jmp .new |
||
71 | diamond | 1355 | .done: |
77 | diamond | 1356 | mov ebx, edx |
1357 | pop eax edx ecx edi |
||
1358 | sub ebx, edx |
||
75 | diamond | 1359 | ret |
71 | diamond | 1360 | .eof: |
77 | diamond | 1361 | mov ebx, edx |
1362 | pop eax edx ecx |
||
75 | diamond | 1363 | jmp .reteof |
71 | diamond | 1364 | .err: |
77 | diamond | 1365 | mov ebx, edx |
1366 | pop eax edx ecx edi |
||
1367 | sub ebx, edx |
||
83 | diamond | 1368 | mov al, 11 |
75 | diamond | 1369 | ret |
1370 | |||
1371 | ;---------------------------------------------------------------- |
||
1372 | ; |
||
1373 | ; fs_FloppyReadFolder - LFN variant for reading floppy folders |
||
1374 | ; |
||
1375 | ; esi points to filename |
||
78 | diamond | 1376 | ; ebx pointer to structure: 32-bit number = first wanted block, 0+ |
1377 | ; & flags (bitfields) |
||
1378 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
||
75 | diamond | 1379 | ; ecx number of blocks to read, 0+ |
1380 | ; edx mem location to return data |
||
1381 | ; |
||
77 | diamond | 1382 | ; ret ebx = blocks read or 0xffffffff folder not found |
75 | diamond | 1383 | ; eax = 0 ok read or other = errormsg |
1384 | ; |
||
1385 | ;-------------------------------------------------------------- |
||
1386 | fs_FloppyReadFolder: |
||
1387 | call read_flp_fat |
||
1388 | push edi |
||
1389 | cmp byte [esi], 0 |
||
1390 | jz .root |
||
1391 | call fd_find_lfn |
||
1392 | jnc .found |
||
1393 | pop edi |
||
1394 | or ebx, -1 |
||
1395 | mov eax, ERROR_FILE_NOT_FOUND |
||
1396 | ret |
||
1397 | .found: |
||
1398 | test byte [edi+11], 0x10 ; do not allow read files |
||
1399 | jnz .found_dir |
||
1400 | pop edi |
||
1401 | or ebx, -1 |
||
1402 | mov eax, ERROR_ACCESS_DENIED |
||
1403 | ret |
||
1404 | .found_dir: |
||
1405 | movzx eax, word [edi+26] |
||
1406 | add eax, 31 |
||
1407 | push 0 |
||
1408 | jmp .doit |
||
1409 | .root: |
||
1410 | mov eax, 19 |
||
1411 | push 14 |
||
1412 | .doit: |
||
1413 | push ecx ebp |
||
1414 | sub esp, 262*2 ; reserve space for LFN |
||
1415 | mov ebp, esp |
||
78 | diamond | 1416 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE names |
1417 | mov ebx, [ebx] |
||
75 | diamond | 1418 | ; init header |
1419 | push eax ecx |
||
1420 | mov edi, edx |
||
1421 | mov ecx, 32/4 |
||
1422 | xor eax, eax |
||
1423 | rep stosd |
||
1424 | pop ecx eax |
||
1425 | mov byte [edx], 1 ; version |
||
1426 | mov esi, edi ; esi points to BDFE |
||
1427 | .main_loop: |
||
1428 | pusha |
||
1429 | call read_chs_sector |
||
1430 | popa |
||
1431 | cmp [FDC_Status], 0 |
||
1432 | jnz .error |
||
1433 | mov edi, 0xD000 |
||
1434 | push eax |
||
1435 | .l1: |
||
1436 | call fat_get_name |
||
1437 | jc .l2 |
||
1438 | cmp byte [edi+11], 0xF |
||
1439 | jnz .do_bdfe |
||
1440 | add edi, 0x20 |
||
1441 | cmp edi, 0xD200 |
||
1442 | jb .do_bdfe |
||
1443 | pop eax |
||
1444 | inc eax |
||
1445 | dec byte [esp+262*2+12] |
||
1446 | jz .done |
||
1447 | jns @f |
||
1448 | ; read next sector from FAT |
||
1449 | mov eax, [(eax-31-1)*2+0x282000] |
||
1450 | and eax, 0xFFF |
||
1451 | cmp eax, 0xFF8 |
||
1452 | jae .done |
||
1453 | add eax, 31 |
||
1454 | mov byte [esp+262*2+12], 0 |
||
1455 | @@: |
||
1456 | pusha |
||
1457 | call read_chs_sector |
||
1458 | popa |
||
1459 | cmp [FDC_Status], 0 |
||
1460 | jnz .error |
||
1461 | mov edi, 0xD000 |
||
1462 | push eax |
||
1463 | .do_bdfe: |
||
1464 | inc dword [edx+8] ; new file found |
||
1465 | dec ebx |
||
1466 | jns .l2 |
||
1467 | dec ecx |
||
1468 | js .l2 |
||
1469 | inc dword [edx+4] ; new file block copied |
||
1470 | call fat_entry_to_bdfe |
||
1471 | .l2: |
||
1472 | add edi, 0x20 |
||
1473 | cmp edi, 0xD200 |
||
1474 | jb .l1 |
||
1475 | pop eax |
||
1476 | inc eax |
||
1477 | dec byte [esp+262*2+12] |
||
1478 | jz .done |
||
1479 | jns @f |
||
1480 | ; read next sector from FAT |
||
1481 | mov eax, [(eax-31-1)*2+0x282000] |
||
1482 | and eax, 0xFFF |
||
1483 | cmp eax, 0xFF8 |
||
1484 | jae .done |
||
1485 | add eax, 31 |
||
1486 | mov byte [esp+262*2+12], 0 |
||
1487 | @@: |
||
1488 | jmp .main_loop |
||
1489 | .error: |
||
1490 | add esp, 262*2+4 |
||
1491 | pop ebp ecx edi edi |
||
1492 | or ebx, -1 |
||
1493 | mov eax, ERROR_FILE_NOT_FOUND |
||
1494 | ret |
||
1495 | .done: |
||
1496 | add esp, 262*2+4 |
||
1497 | pop ebp |
||
77 | diamond | 1498 | mov ebx, [edx+4] |
75 | diamond | 1499 | xor eax, eax |
1500 | dec ecx |
||
1501 | js @f |
||
1502 | mov al, ERROR_END_OF_FILE |
||
1503 | @@: |
||
1504 | pop ecx edi edi |
||
1505 | ret |
||
1506 | |||
83 | diamond | 1507 | ;---------------------------------------------------------------- |
1508 | ; |
||
1509 | ; fs_FloppyRewrite - LFN variant for writing sys floppy |
||
1510 | ; |
||
1511 | ; esi points to filename |
||
1512 | ; ebx ignored (reserved) |
||
1513 | ; ecx number of bytes to write, 0+ |
||
1514 | ; edx mem location to data |
||
1515 | ; |
||
1516 | ; ret ebx = number of written bytes |
||
1517 | ; eax = 0 ok read or other = errormsg |
||
1518 | ; |
||
1519 | ;-------------------------------------------------------------- |
||
1520 | @@: |
||
1521 | mov eax, ERROR_ACCESS_DENIED |
||
1522 | xor ebx, ebx |
||
1523 | ret |
||
1524 | fsfrfe2: |
||
1525 | popad |
||
1526 | fsfrfe: |
||
1527 | mov eax, 11 |
||
1528 | xor ebx, ebx |
||
1529 | ret |
||
1530 | |||
1531 | fs_FloppyRewrite: |
||
1532 | cmp byte [esi], 0 |
||
1533 | jz @b |
||
1534 | call read_flp_fat |
||
1535 | cmp [FDC_Status], 0 |
||
1536 | jnz fsfrfe |
||
1537 | pushad |
||
1538 | xor ebp, ebp |
||
1539 | push esi |
||
1540 | @@: |
||
1541 | lodsb |
||
1542 | test al, al |
||
1543 | jz @f |
||
1544 | cmp al, '/' |
||
1545 | jnz @b |
||
1546 | lea ebp, [esi-1] |
||
1547 | jmp @b |
||
1548 | @@: |
||
1549 | pop esi |
||
1550 | test ebp, ebp |
||
1551 | jnz .noroot |
||
1552 | call read_flp_root |
||
1553 | cmp [FDC_Status], 0 |
||
1554 | jnz fsfrfe2 |
||
1555 | push flp_rootmem_extend_dir |
||
1556 | push flp_rootmem_end_write |
||
1557 | push flp_rootmem_next_write |
||
1558 | push flp_rootmem_begin_write |
||
1559 | xor ebp, ebp |
||
1560 | push ebp |
||
1561 | push flp_rootmem_first |
||
1562 | push flp_rootmem_next |
||
1563 | jmp .common1 |
||
1564 | .noroot: |
||
1565 | ; check existence |
||
1566 | mov byte [ebp], 0 |
||
1567 | call fd_find_lfn |
||
1568 | mov byte [ebp], '/' |
||
1569 | lea esi, [ebp+1] |
||
1570 | jnc @f |
||
1571 | mov eax, ERROR_FILE_NOT_FOUND |
||
1572 | .ret1: |
||
1573 | mov [esp+28], eax |
||
1574 | popad |
||
1575 | xor ebx, ebx |
||
1576 | ret |
||
1577 | @@: |
||
1578 | test byte [edi+11], 0x10 ; must be directory |
||
1579 | mov eax, ERROR_ACCESS_DENIED |
||
1580 | jz .ret1 |
||
1581 | movzx ebp, word [edi+26] ; ebp=cluster |
||
1582 | mov eax, ERROR_FAT_TABLE |
||
1583 | cmp ebp, 2 |
||
1584 | jb .ret1 |
||
1585 | cmp ebp, 2849 |
||
1586 | jae .ret1 |
||
1587 | push flp_notroot_extend_dir |
||
1588 | push flp_notroot_end_write |
||
1589 | push flp_notroot_next_write |
||
1590 | push flp_notroot_begin_write |
||
1591 | push ebp |
||
1592 | push flp_notroot_first |
||
1593 | push flp_notroot_next |
||
1594 | .common1: |
||
1595 | call fat_find_lfn |
||
1596 | jc .notfound |
||
91 | diamond | 1597 | ; found; must not be directory |
1598 | test byte [edi+11], 10h |
||
1599 | jz @f |
||
1600 | add esp, 28 |
||
1601 | popad |
||
1602 | mov eax, ERROR_ACCESS_DENIED |
||
1603 | xor ebx, ebx |
||
1604 | ret |
||
1605 | @@: |
||
1606 | ; delete FAT chain |
||
83 | diamond | 1607 | push edi |
1608 | xor eax, eax |
||
1609 | mov dword [edi+28], eax ; zero size |
||
1610 | xchg ax, word [edi+26] ; start cluster |
||
1611 | test eax, eax |
||
1612 | jz .done1 |
||
1613 | @@: |
||
1614 | cmp eax, 0xFF8 |
||
1615 | jae .done1 |
||
1616 | lea edi, [0x282000 + eax*2] ; position in FAT |
||
1617 | xor eax, eax |
||
1618 | xchg ax, [edi] |
||
1619 | jmp @b |
||
1620 | .done1: |
||
1621 | pop edi |
||
1622 | call get_time_for_file |
||
1623 | mov [edi+22], ax |
||
1624 | call get_date_for_file |
||
1625 | mov [edi+24], ax |
||
1626 | mov [edi+18], ax |
||
1627 | or byte [edi+11], 20h ; set 'archive' attribute |
||
1628 | jmp .doit |
||
1629 | .notfound: |
||
1630 | ; file is not found; generate short name |
||
1631 | call fat_name_is_legal |
||
1632 | jc @f |
||
1633 | add esp, 28 |
||
1634 | popad |
||
1635 | mov eax, ERROR_FILE_NOT_FOUND |
||
1636 | xor ebx, ebx |
||
1637 | ret |
||
1638 | @@: |
||
1639 | sub esp, 12 |
||
1640 | mov edi, esp |
||
1641 | call fat_gen_short_name |
||
1642 | .test_short_name_loop: |
||
1643 | push esi edi ecx |
||
1644 | mov esi, edi |
||
1645 | lea eax, [esp+12+12+8] |
||
1646 | mov [eax], ebp |
||
1647 | call dword [eax-4] |
||
1648 | jc .found |
||
1649 | .test_short_name_entry: |
||
1650 | cmp byte [edi+11], 0xF |
||
1651 | jz .test_short_name_cont |
||
1652 | mov ecx, 11 |
||
1653 | push esi edi |
||
1654 | repz cmpsb |
||
1655 | pop edi esi |
||
1656 | jz .short_name_found |
||
1657 | .test_short_name_cont: |
||
1658 | lea eax, [esp+12+12+8] |
||
1659 | call dword [eax-8] |
||
1660 | jnc .test_short_name_entry |
||
1661 | jmp .found |
||
1662 | .short_name_found: |
||
1663 | pop ecx edi esi |
||
1664 | call fat_next_short_name |
||
1665 | jnc .test_short_name_loop |
||
1666 | .disk_full: |
||
1667 | add esp, 12+28 |
||
1668 | popa |
||
1669 | mov eax, ERROR_DISK_FULL |
||
1670 | xor ebx, ebx |
||
1671 | ret |
||
1672 | .found: |
||
1673 | pop ecx edi esi |
||
1674 | ; now find space in directory |
||
1675 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
||
1676 | mov al, '~' |
||
1677 | push ecx edi |
||
1678 | mov ecx, 8 |
||
1679 | repnz scasb |
||
1680 | push 1 |
||
1681 | pop eax ; 1 entry |
||
1682 | jnz .notilde |
||
1683 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
||
1684 | xor eax, eax |
||
1685 | @@: |
||
1686 | cmp byte [esi], 0 |
||
1687 | jz @f |
||
1688 | inc esi |
||
1689 | inc eax |
||
1690 | jmp @b |
||
1691 | @@: |
||
1692 | sub esi, eax |
||
1693 | add eax, 12+13 |
||
1694 | mov ecx, 13 |
||
1695 | push edx |
||
1696 | cdq |
||
1697 | div ecx |
||
1698 | pop edx |
||
1699 | .notilde: |
||
1700 | push -1 |
||
1701 | push -1 |
||
1702 | ; find |
||
1703 | xor ecx, ecx |
||
1704 | push eax |
||
1705 | lea eax, [esp+12+8+12+8] |
||
1706 | mov [eax], ebp |
||
1707 | call dword [eax-4] |
||
1708 | pop eax |
||
1709 | jnc .scan_dir |
||
1710 | .fsfrfe3: |
||
1711 | add esp, 8+8+12+28 |
||
1712 | popad |
||
1713 | mov eax, 11 |
||
1714 | xor ebx, ebx |
||
1715 | ret |
||
1716 | .scan_dir: |
||
1717 | cmp byte [edi], 0 |
||
1718 | jz .free |
||
1719 | cmp byte [edi], 0xE5 |
||
1720 | jz .free |
||
1721 | xor ecx, ecx |
||
1722 | .scan_cont: |
||
1723 | push eax |
||
1724 | lea eax, [esp+12+8+12+8] |
||
1725 | call dword [eax-8] |
||
1726 | pop eax |
||
1727 | jnc .scan_dir |
||
1728 | cmp [FDC_Status], 0 |
||
1729 | jnz .fsfrfe3 |
||
1730 | push eax |
||
1731 | lea eax, [esp+12+8+12+8] |
||
1732 | call dword [eax+16] ; extend directory |
||
1733 | pop eax |
||
1734 | jnc .scan_dir |
||
1735 | add esp, 8+8+12+28 |
||
1736 | popad |
||
1737 | mov eax, ERROR_DISK_FULL |
||
1738 | xor ebx, ebx |
||
1739 | ret |
||
1740 | .free: |
||
1741 | test ecx, ecx |
||
1742 | jnz @f |
||
1743 | mov [esp], edi |
||
1744 | mov ecx, [esp+8+8+12+8] |
||
1745 | mov [esp+4], ecx |
||
1746 | xor ecx, ecx |
||
1747 | @@: |
||
1748 | inc ecx |
||
1749 | cmp ecx, eax |
||
1750 | jb .scan_cont |
||
1751 | ; found! |
||
1752 | ; calculate name checksum |
||
1753 | push esi ecx |
||
1754 | mov esi, [esp+8+8] |
||
1755 | mov ecx, 11 |
||
1756 | xor eax, eax |
||
1757 | @@: |
||
1758 | ror al, 1 |
||
1759 | add al, [esi] |
||
1760 | inc esi |
||
1761 | loop @b |
||
1762 | pop ecx esi |
||
1763 | pop edi |
||
1764 | pop dword [esp+8+12+8] |
||
1765 | ; edi points to first entry in free chunk |
||
1766 | dec ecx |
||
1767 | jz .nolfn |
||
1768 | push esi |
||
1769 | push eax |
||
1770 | lea eax, [esp+8+8+12+8] |
||
1771 | call dword [eax+4] ; begin write |
||
1772 | mov al, 40h |
||
1773 | .writelfn: |
||
1774 | or al, cl |
||
1775 | mov esi, [esp+4] |
||
1776 | push ecx |
||
1777 | dec ecx |
||
1778 | imul ecx, 13 |
||
1779 | add esi, ecx |
||
1780 | stosb |
||
1781 | mov cl, 5 |
||
1782 | call fs_RamdiskRewrite.read_symbols |
||
1783 | mov ax, 0xF |
||
1784 | stosw |
||
1785 | mov al, [esp+4] |
||
1786 | stosb |
||
1787 | mov cl, 6 |
||
1788 | call fs_RamdiskRewrite.read_symbols |
||
1789 | xor eax, eax |
||
1790 | stosw |
||
1791 | mov cl, 2 |
||
1792 | call fs_RamdiskRewrite.read_symbols |
||
1793 | pop ecx |
||
1794 | lea eax, [esp+8+8+12+8] |
||
1795 | call dword [eax+8] ; next write |
||
1796 | xor eax, eax |
||
1797 | loop .writelfn |
||
1798 | pop eax |
||
1799 | pop esi |
||
1800 | ; lea eax, [esp+8+12+8] |
||
1801 | ; call dword [eax+12] ; end write |
||
1802 | .nolfn: |
||
1803 | xchg esi, [esp] |
||
1804 | mov ecx, 11 |
||
1805 | rep movsb |
||
1806 | mov word [edi], 20h ; attributes |
||
1807 | sub edi, 11 |
||
1808 | pop esi ecx |
||
1809 | add esp, 12 |
||
1810 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
||
1811 | call get_time_for_file |
||
1812 | mov [edi+14], ax ; creation time |
||
1813 | mov [edi+22], ax ; last write time |
||
1814 | call get_date_for_file |
||
1815 | mov [edi+16], ax ; creation date |
||
1816 | mov [edi+24], ax ; last write date |
||
1817 | mov [edi+18], ax ; last access date |
||
1818 | and word [edi+20], 0 ; high word of cluster |
||
1819 | and word [edi+26], 0 ; low word of cluster - to be filled |
||
1820 | and dword [edi+28], 0 ; file size - to be filled |
||
1821 | .doit: |
||
1822 | lea eax, [esp+8] |
||
1823 | call dword [eax+12] ; flush directory |
||
1824 | push ecx |
||
1825 | push edi |
||
1826 | add edi, 26 ; edi points to low word of cluster |
||
1827 | push edi |
||
1828 | mov esi, edx |
||
1829 | jecxz .done |
||
1830 | mov ecx, 2849 |
||
1831 | mov edi, 0x282000 |
||
1832 | push 0 ; first cluster |
||
1833 | .write_loop: |
||
1834 | ; allocate new cluster |
||
1835 | xor eax, eax |
||
1836 | repnz scasw |
||
1837 | mov al, ERROR_DISK_FULL |
||
1838 | jnz .ret |
||
1839 | dec edi |
||
1840 | dec edi |
||
1841 | lea eax, [edi-0x282000] |
||
1842 | shr eax, 1 ; eax = cluster |
||
1843 | mov word [edi], 0xFFF ; mark as last cluster |
||
1844 | cmp dword [esp], 0 |
||
1845 | jz .first |
||
1846 | xchg edi, [esp+4] |
||
1847 | stosw |
||
1848 | mov edi, [esp+4] |
||
1849 | jmp @f |
||
1850 | .first: |
||
1851 | mov [esp], eax |
||
1852 | @@: |
||
1853 | inc ecx |
||
1854 | ; write data |
||
1855 | push ecx edi |
||
1856 | mov ecx, 512 |
||
1857 | cmp dword [esp+20], ecx |
||
1858 | jae @f |
||
1859 | mov ecx, [esp+20] |
||
1860 | @@: |
||
1861 | push ecx |
||
1862 | mov edi, 0xD000 |
||
1863 | rep movsb |
||
1864 | pop ecx |
||
1865 | push ecx |
||
1866 | sub ecx, 512 |
||
1867 | neg ecx |
||
1868 | push eax |
||
1869 | xor eax, eax |
||
1870 | rep stosb |
||
1871 | pop eax |
||
1872 | add eax, 31 |
||
1873 | pusha |
||
1874 | call save_chs_sector |
||
1875 | popa |
||
1876 | pop ecx |
||
1877 | cmp [FDC_Status], 0 |
||
1878 | jnz .diskerr |
||
1879 | sub [esp+20], ecx |
||
1880 | pop edi ecx |
||
1881 | jnz .write_loop |
||
1882 | .done: |
||
1883 | xor eax, eax |
||
1884 | .ret: |
||
1885 | pop ebx edi edi ecx |
||
1886 | mov [esp+28+28], eax |
||
1887 | lea eax, [esp+8] |
||
1888 | call dword [eax+4] |
||
1889 | mov [edi+26], bx |
||
1890 | mov ebx, esi |
||
1891 | sub ebx, edx |
||
1892 | mov [edi+28], ebx |
||
1893 | call dword [eax+12] |
||
1894 | mov [esp+28+16], ebx |
||
1895 | test ebp, ebp |
||
1896 | jnz @f |
||
1897 | call save_flp_root |
||
1898 | @@: |
||
1899 | add esp, 28 |
||
1900 | cmp [FDC_Status], 0 |
||
1901 | jnz .err3 |
||
1902 | call save_flp_fat |
||
1903 | cmp [FDC_Status], 0 |
||
1904 | jnz .err3 |
||
1905 | popa |
||
1906 | ret |
||
1907 | .err3: |
||
1908 | popa |
||
1909 | mov al, 11 |
||
1910 | xor ebx, ebx |
||
1911 | ret |
||
1912 | .diskerr: |
||
1913 | sub esi, ecx |
||
1914 | mov eax, 11 |
||
1915 | pop edi ecx |
||
1916 | jmp .ret |
||
1917 | |||
86 | diamond | 1918 | fs_FloppyGetFileInfo: |
1919 | call read_flp_fat |
||
1920 | cmp [FDC_Status], 0 |
||
1921 | jnz ret11 |
||
1922 | cmp byte [esi], 0 |
||
1923 | jnz @f |
||
1924 | mov eax, 2 ; unsupported |
||
1925 | ret |
||
1926 | @@: |
||
1927 | push edi |
||
1928 | call fd_find_lfn |
||
1929 | jmp fs_GetFileInfo_finish |
||
1930 | |||
1931 | ret11: |
||
1932 | mov eax, 11 |
||
1933 | ret |
||
1934 | |||
1935 | fs_FloppySetFileInfo: |
||
1936 | call read_flp_fat |
||
1937 | cmp [FDC_Status], 0 |
||
1938 | jnz ret11 |
||
1939 | cmp byte [esi], 0 |
||
1940 | jnz @f |
||
1941 | mov eax, 2 ; unsupported |
||
1942 | ret |
||
1943 | @@: |
||
1944 | push edi |
||
1945 | call fd_find_lfn |
||
1946 | jnc @f |
||
1947 | pop edi |
||
1948 | mov eax, ERROR_FILE_NOT_FOUND |
||
1949 | ret |
||
1950 | @@: |
||
1951 | push eax |
||
1952 | call bdfe_to_fat_entry |
||
1953 | pop eax |
||
1954 | test eax, eax |
||
1955 | jz .root |
||
1956 | add eax, 31 |
||
1957 | pusha |
||
1958 | call save_chs_sector |
||
1959 | popa |
||
1960 | jmp .cmn |
||
1961 | .root: |
||
1962 | call save_flp_root |
||
1963 | .cmn: |
||
1964 | pop edi |
||
1965 | xor eax, eax |
||
1966 | cmp [FDC_Status], 0 |
||
1967 | jz @f |
||
1968 | mov al, 11 |
||
1969 | @@: |
||
1970 | ret |
||
1971 | |||
91 | diamond | 1972 | ;---------------------------------------------------------------- |
1973 | ; |
||
1974 | ; fs_FloppyExecute - LFN variant for executing from floppy |
||
1975 | ; |
||
1976 | ; esi points to floppy filename (e.g. 'dir1/name') |
||
1977 | ; ebp points to full filename (e.g. '/fd/1/dir1/name') |
||
1978 | ; dword [ebx] = flags |
||
1979 | ; dword [ebx+4] = cmdline |
||
1980 | ; |
||
1981 | ; ret ebx,edx destroyed |
||
1982 | ; eax > 0 - PID, < 0 - error |
||
1983 | ; |
||
1984 | ;-------------------------------------------------------------- |
||
1985 | fs_FloppyExecute: |
||
1986 | mov edx, [ebx] |
||
1987 | mov ebx, [ebx+4] |
||
1988 | test ebx, ebx |
||
1989 | jz @f |
||
1990 | add ebx, std_application_base_address |
||
1991 | @@: |
||
1992 | |||
1993 | ;---------------------------------------------------------------- |
||
1994 | ; |
||
1995 | ; fs_FloppyExecute.flags - second entry |
||
1996 | ; |
||
1997 | ; esi points to floppy filename (kernel address) |
||
1998 | ; ebp points to full filename |
||
1999 | ; edx flags |
||
2000 | ; ebx cmdline (kernel address) |
||
2001 | ; |
||
2002 | ; ret eax > 0 - PID, < 0 - error |
||
2003 | ; |
||
2004 | ;-------------------------------------------------------------- |
||
2005 | |||
2006 | .flags: |
||
2007 | call read_flp_fat |
||
2008 | cmp byte [esi], 0 |
||
2009 | jnz @f |
||
2010 | ; cannot execute root! |
||
2011 | mov eax, -ERROR_ACCESS_DENIED |
||
2012 | ret |
||
2013 | @@: |
||
2014 | push edi |
||
2015 | call fd_find_lfn |
||
2016 | jnc .found |
||
2017 | pop edi |
||
2018 | mov eax, -ERROR_FILE_NOT_FOUND |
||
2019 | ret |
||
2020 | .found: |
||
2021 | movzx eax, word [edi+26] ; cluster |
||
2022 | push eax |
||
2023 | push dword [edi+28] ; size |
||
2024 | push .DoRead |
||
2025 | call fs_execute |
||
2026 | add esp, 12 |
||
2027 | pop edi |
||
2028 | ret |
||
2029 | |||
2030 | .DoRead: |
||
2031 | ; read next block |
||
2032 | ; in: eax->parameters, edi->buffer |
||
2033 | ; out: eax = error code |
||
2034 | pushad |
||
2035 | cmp dword [eax], 0 ; file size |
||
2036 | jz .eof |
||
2037 | mov eax, [eax+4] ; cluster |
||
2038 | add eax, 31 |
||
2039 | call read_chs_sector |
||
2040 | cmp [FDC_Status], 0 |
||
2041 | jnz .err |
||
2042 | pop edi |
||
2043 | mov esi, 0xD000 |
||
2044 | push edi |
||
2045 | mov ecx, 512/4 |
||
2046 | rep movsd |
||
2047 | mov eax, [esp+28] |
||
2048 | mov ecx, [eax] |
||
2049 | sub ecx, 512 |
||
2050 | jae @f |
||
2051 | add edi, ecx |
||
2052 | neg ecx |
||
2053 | push eax |
||
2054 | xor eax, eax |
||
2055 | rep stosb |
||
2056 | pop eax |
||
2057 | @@: |
||
2058 | mov [eax], ecx |
||
2059 | mov edx, [eax+4] |
||
2060 | mov dx, [edx*2+0x282000] |
||
2061 | mov [eax+4], dx ; high word is already zero |
||
2062 | popad |
||
2063 | xor eax, eax |
||
2064 | ret |
||
2065 | .eof: |
||
2066 | popad |
||
2067 | mov eax, 6 |
||
2068 | ret |
||
2069 | .err: |
||
2070 | popad |
||
2071 | mov eax, 11 |
||
2072 | ret |
||
2073 | |||
78 | diamond | 2074 | ; \end{diamond}>>=>=>->->->-> |