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Rev | Author | Line No. | Line |
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425 | victor | 1 | $Revision: 425 $ |
1 | ha | 2 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
3 | ;; ;; |
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4 | ;; FAT12.INC ;; |
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5 | ;; (C) 2005 Mario79, License: GPL ;; |
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6 | ;; ;; |
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7 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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8 | |||
9 | n_sector dd 0 ; temporary save for sector value |
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10 | flp_status dd 0 |
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11 | clust_tmp_flp dd 0 ; used by analyze_directory and analyze_directory_to_write |
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12 | path_pointer_flp dd 0 |
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13 | pointer_file_name_flp dd 0 |
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14 | save_root_flag db 0 |
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15 | save_flag db 0 |
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16 | root_read db 0 ; 0-necessary to load root, 1-not to load root |
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17 | flp_fat db 0 ; 0-necessary to load fat, 1-not to load fat |
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18 | flp_number db 0 ; 1- Floppy A, 2-Floppy B |
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19 | old_track db 0 ; old value track |
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20 | flp_label rb 15 ; Label and ID of inserted floppy disk |
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21 | |||
22 | reserve_flp: |
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23 | |||
24 | cli |
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25 | cmp [flp_status],0 |
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26 | je reserve_flp_ok |
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27 | |||
28 | sti |
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29 | call change_task |
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30 | jmp reserve_flp |
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31 | |||
32 | reserve_flp_ok: |
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33 | |||
34 | push eax |
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379 | serge | 35 | mov eax,[CURRENT_TASK] |
1 | ha | 36 | shl eax,5 |
379 | serge | 37 | mov eax,[eax+CURRENT_TASK+TASKDATA.pid] |
1 | ha | 38 | mov [flp_status],eax |
39 | pop eax |
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40 | sti |
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41 | ret |
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42 | |||
43 | floppy_free_space: |
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44 | ;--------------------------------------------- |
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45 | ; |
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46 | ; returns free space in edi |
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47 | ; |
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48 | ;--------------------------------------------- |
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49 | push eax ebx ecx |
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50 | call read_flp_fat |
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51 | cmp [FDC_Status],0 |
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52 | jne fdc_status_error_2 |
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133 | diamond | 53 | mov eax,0x282004 |
1 | ha | 54 | xor edi,edi |
55 | mov ecx,2847 ;1448000/512 |
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56 | rdfs1_1: |
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57 | mov ebx,[eax] |
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58 | and ebx,4095 |
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59 | jne rdfs2_1 |
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60 | add edi,512 |
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61 | rdfs2_1: |
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62 | add eax,2 |
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63 | loop rdfs1_1 |
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64 | fdc_status_error_2: |
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65 | pop ecx ebx eax |
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66 | ret |
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67 | |||
68 | |||
131 | diamond | 69 | |
70 | |||
1 | ha | 71 | floppy_fileread: |
72 | ;---------------------------------------------------------------- |
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73 | ; |
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74 | ; fileread - sys floppy |
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75 | ; |
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76 | ; eax points to filename 11 chars - for root directory |
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77 | ; ebx first wanted block ; 1+ ; if 0 then set to 1 |
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78 | ; ecx number of blocks to read ; 1+ ; if 0 then set to 1 |
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79 | ; edx mem location to return data |
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80 | ; esi length of filename 12*X |
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81 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
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82 | ; |
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83 | ; ret ebx = size or 0xffffffff file not found |
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84 | ; eax = 0 ok read or other = errormsg |
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85 | ; 10 = access denied |
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86 | ;-------------------------------------------------------------- |
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87 | |||
88 | mov [save_flag],0 |
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89 | mov [path_pointer_flp],edi |
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90 | cmp esi,0 ; return ramdisk root |
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91 | jne fr_noroot_1 |
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92 | cmp ebx,224/16 |
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93 | jbe fr_do_1 |
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94 | mov eax,5 |
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95 | mov ebx,0 |
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96 | mov [flp_status],0 |
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97 | ret |
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98 | |||
99 | fr_do_1: |
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100 | push ebx ecx edx |
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101 | call read_flp_root |
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102 | pop edx ecx ebx |
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103 | cmp [FDC_Status],0 |
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104 | jne fdc_status_error_1 |
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105 | mov edi,edx |
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106 | dec ebx |
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107 | shl ebx,9 |
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380 | serge | 108 | mov esi,FLOPPY_BUFF |
1 | ha | 109 | add esi,ebx |
110 | shl ecx,9 |
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111 | cld |
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112 | rep movsb |
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113 | mov eax,0 ; ok read |
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114 | mov ebx,0 |
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115 | mov [flp_status],0 |
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116 | ret |
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117 | fdc_status_error_1: |
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118 | mov [flp_status],0 |
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131 | diamond | 119 | mov eax,10 |
1 | ha | 120 | mov ebx,-1 |
121 | ret |
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122 | |||
123 | fr_noroot_1: |
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124 | sub esp,32 |
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125 | call expand_filename |
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126 | frfloppy_1: |
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127 | cmp ebx,0 |
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128 | jne frfl5_1 |
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129 | mov ebx,1 |
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130 | frfl5_1: |
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131 | cmp ecx,0 |
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132 | jne frfl6_1 |
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133 | mov ecx,1 |
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134 | frfl6_1: |
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135 | dec ebx |
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136 | push eax |
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137 | push eax ebx ecx edx esi edi |
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138 | call read_flp_fat |
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139 | cmp [FDC_Status],0 |
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140 | jne fdc_status_error_3_1 |
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141 | mov [FDD_Track],0 ; Цилиндр |
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142 | mov [FDD_Head],1 ; Сторона |
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143 | mov [FDD_Sector],2 ; Сектор |
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144 | call SeekTrack |
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145 | mov dh,14 |
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146 | l.20_1: |
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147 | call ReadSectWithRetr |
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148 | cmp [FDC_Status],0 |
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149 | jne fdc_status_error_3_1 |
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150 | mov dl,16 |
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380 | serge | 151 | mov edi,FDD_BUFF |
1 | ha | 152 | inc [FDD_Sector] |
153 | l.21_1: |
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154 | mov esi,eax ;Name of file we want |
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155 | mov ecx,11 |
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156 | cld |
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157 | rep cmpsb ;Found the file? |
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158 | je fifound_1 ;Yes |
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159 | add ecx,21 |
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160 | add edi, ecx ;Advance to next entry |
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161 | dec dl |
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162 | cmp dl,0 |
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163 | jne l.21_1 |
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164 | dec dh |
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165 | cmp dh,0 |
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166 | jne l.20_1 |
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167 | fdc_status_error_3: |
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168 | mov eax,5 ; file not found ? |
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169 | mov ebx,-1 |
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170 | add esp,32+28 |
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171 | mov [flp_status],0 |
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172 | ret |
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173 | fdc_status_error_3_2: |
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174 | cmp [FDC_Status],0 |
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175 | je fdc_status_error_3 |
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176 | fdc_status_error_3_1: |
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177 | add esp,32+28 |
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178 | jmp fdc_status_error_1 |
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179 | |||
180 | fifound_1: |
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181 | mov eax,[path_pointer_flp] |
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182 | cmp [eax+36],byte 0 |
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183 | je fifound_2 |
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184 | add edi,0xf |
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185 | mov eax,[edi] |
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186 | and eax,65535 |
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187 | mov ebx,[path_pointer_flp] |
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188 | add ebx,36 |
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189 | call get_cluster_of_a_path_flp |
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190 | jc fdc_status_error_3_2 |
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191 | mov ebx,[ebx-11+28] ;file size |
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192 | mov [esp+20],ebx |
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193 | mov [esp+24],ebx |
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194 | jmp fifound_3 |
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195 | fifound_2: |
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196 | mov ebx,[edi-11+28] ;file size |
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197 | mov [esp+20],ebx |
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198 | mov [esp+24],ebx |
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199 | add edi,0xf |
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200 | mov eax,[edi] |
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201 | fifound_3: |
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202 | and eax,65535 |
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203 | mov [n_sector],eax ;eax=cluster |
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204 | frnew_1: |
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205 | add eax,31 ;bootsector+2*fat+filenames |
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206 | cmp [esp+16],dword 0 ; wanted cluster ? |
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207 | jne frfl7_1 |
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208 | call read_chs_sector |
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209 | cmp [FDC_Status],0 |
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210 | jne fdc_status_error_5 |
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211 | mov edi,[esp+8] |
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212 | call give_back_application_data_1 |
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213 | add [esp+8],dword 512 |
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214 | dec dword [esp+12] ; last wanted cluster ? |
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215 | cmp [esp+12],dword 0 |
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216 | je frnoread_1 |
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217 | jmp frfl8_1 |
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218 | frfl7_1: |
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219 | dec dword [esp+16] |
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220 | frfl8_1: |
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221 | mov edi,[n_sector] |
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222 | shl edi,1 ;find next cluster from FAT |
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381 | serge | 223 | add edi,FLOPPY_FAT |
1 | ha | 224 | mov eax,[edi] |
225 | and eax,4095 |
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226 | mov edi,eax |
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227 | mov [n_sector],edi |
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228 | cmp edi,4095 ;eof - cluster |
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229 | jz frnoread2_1 |
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230 | cmp [esp+24],dword 512 ;eof - size |
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231 | jb frnoread_1 |
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232 | sub [esp+24],dword 512 |
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233 | jmp frnew_1 |
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234 | |||
131 | diamond | 235 | read_chs_sector: |
1 | ha | 236 | call calculate_chs |
237 | call ReadSectWithRetr |
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238 | ret |
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239 | |||
240 | frnoread2_1: |
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241 | cmp [esp+16],dword 0 ; eof without read ? |
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242 | je frnoread_1 |
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243 | mov [fdc_irq_func],fdc_null |
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244 | pop edi esi edx ecx |
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245 | add esp,4 |
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246 | pop ebx ; ebx <- eax : size of file |
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247 | add esp,36 |
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248 | mov eax,6 ; end of file |
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249 | mov [flp_status],0 |
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250 | ret |
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251 | |||
252 | frnoread_1: |
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253 | pop edi esi edx ecx |
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254 | add esp,4 |
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255 | pop ebx ; ebx <- eax : size of file |
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256 | add esp,36 |
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257 | mov eax,0 |
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258 | mov [flp_status],0 |
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259 | ret |
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260 | |||
261 | fdc_status_error_5: |
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262 | pop edi esi edx ecx |
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263 | add esp,4 |
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264 | pop ebx ; ebx <- eax : size of file |
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265 | add esp,36 |
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266 | jmp fdc_status_error_1 |
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267 | |||
268 | read_flp_root: |
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269 | pusha |
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270 | call check_label |
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271 | cmp [FDC_Status],0 |
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272 | jne unnecessary_root_read |
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273 | cmp [root_read],1 |
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274 | je unnecessary_root_read |
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275 | mov [FDD_Track],0 ; Цилиндр |
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276 | mov [FDD_Head],1 ; Сторона |
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131 | diamond | 277 | mov [FDD_Sector],2 ; Сектор |
380 | serge | 278 | mov edi,FLOPPY_BUFF |
1 | ha | 279 | call SeekTrack |
280 | read_flp_root_1: |
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281 | call ReadSectWithRetr |
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282 | cmp [FDC_Status],0 |
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283 | jne unnecessary_root_read |
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284 | push edi |
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285 | call give_back_application_data_1 |
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286 | pop edi |
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287 | add edi,512 |
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288 | inc [FDD_Sector] |
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289 | cmp [FDD_Sector],16 |
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290 | jne read_flp_root_1 |
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291 | mov [root_read],1 |
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292 | unnecessary_root_read: |
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293 | popa |
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294 | ret |
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295 | |||
296 | |||
297 | read_flp_fat: |
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298 | pusha |
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299 | call check_label |
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300 | cmp [FDC_Status],0 |
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301 | jne unnecessary_flp_fat |
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302 | cmp [flp_fat],1 |
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303 | je unnecessary_flp_fat |
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304 | mov [FDD_Track],0 ; Цилиндр |
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305 | mov [FDD_Head],0 ; Сторона |
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131 | diamond | 306 | mov [FDD_Sector],2 ; Сектор |
380 | serge | 307 | mov edi,FLOPPY_BUFF |
1 | ha | 308 | call SeekTrack |
309 | read_flp_fat_1: |
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310 | call ReadSectWithRetr |
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311 | cmp [FDC_Status],0 |
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312 | jne unnecessary_flp_fat |
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313 | push edi |
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314 | call give_back_application_data_1 |
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315 | pop edi |
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316 | add edi,512 |
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317 | inc [FDD_Sector] |
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318 | cmp [FDD_Sector],19 |
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319 | jne read_flp_fat_1 |
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320 | mov [FDD_Sector],1 |
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321 | mov [FDD_Head],1 |
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322 | call ReadSectWithRetr |
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323 | cmp [FDC_Status],0 |
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324 | jne unnecessary_flp_fat |
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325 | call give_back_application_data_1 |
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326 | call calculatefatchain_flp |
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327 | mov [root_read],0 |
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328 | mov [flp_fat],1 |
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329 | unnecessary_flp_fat: |
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330 | popa |
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331 | ret |
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332 | |||
333 | calculatefatchain_flp: |
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334 | pushad |
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335 | |||
380 | serge | 336 | mov esi,FLOPPY_BUFF |
381 | serge | 337 | mov edi,FLOPPY_FAT |
1 | ha | 338 | |
339 | fcnew_1: |
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340 | mov eax,dword [esi] |
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341 | mov ebx,dword [esi+4] |
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342 | mov ecx,dword [esi+8] |
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343 | mov edx,ecx |
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344 | shr edx,4 ;8 ok |
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345 | shr dx,4 ;7 ok |
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346 | xor ch,ch |
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347 | shld ecx,ebx,20 ;6 ok |
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348 | shr cx,4 ;5 ok |
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349 | shld ebx,eax,12 |
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350 | and ebx,0x0fffffff ;4 ok |
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351 | shr bx,4 ;3 ok |
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352 | shl eax,4 |
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353 | and eax,0x0fffffff ;2 ok |
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354 | shr ax,4 ;1 ok |
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355 | mov dword [edi],eax |
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356 | add edi,4 |
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357 | mov dword [edi],ebx |
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358 | add edi,4 |
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359 | mov dword [edi],ecx |
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360 | add edi,4 |
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361 | mov dword [edi],edx |
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131 | diamond | 362 | add edi,4 |
1 | ha | 363 | add esi,12 |
364 | |||
381 | serge | 365 | cmp edi,FLOPPY_FAT+2856*2 ;2849 clusters |
1 | ha | 366 | jnz fcnew_1 |
367 | |||
368 | popad |
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369 | ret |
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131 | diamond | 370 | |
1 | ha | 371 | check_label: |
372 | pushad |
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373 | mov [FDD_Track],0 ; Цилиндр |
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374 | mov [FDD_Head],0 ; Сторона |
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131 | diamond | 375 | mov [FDD_Sector],1 ; Сектор |
1 | ha | 376 | call SetUserInterrupts |
377 | call FDDMotorON |
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378 | call RecalibrateFDD |
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379 | cmp [FDC_Status],0 |
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380 | jne fdc_status_error |
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381 | call SeekTrack |
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382 | cmp [FDC_Status],0 |
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383 | jne fdc_status_error |
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384 | call ReadSectWithRetr |
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385 | cmp [FDC_Status],0 |
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131 | diamond | 386 | jne fdc_status_error |
1 | ha | 387 | mov esi,flp_label |
380 | serge | 388 | mov edi,FDD_BUFF+39 |
1 | ha | 389 | mov ecx,15 |
390 | cld |
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131 | diamond | 391 | rep cmpsb |
1 | ha | 392 | je same_label |
393 | mov [root_read],0 |
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394 | mov [flp_fat],0 |
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395 | same_label: |
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380 | serge | 396 | mov esi,FDD_BUFF+39 |
1 | ha | 397 | mov edi,flp_label |
398 | mov ecx,15 |
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399 | cld |
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400 | rep movsb |
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401 | popad |
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402 | ret |
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403 | fdc_status_error: |
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404 | popad |
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405 | ret |
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406 | |||
407 | save_flp_root: |
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408 | pusha |
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409 | call check_label |
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410 | cmp [FDC_Status],0 |
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411 | jne unnecessary_root_save |
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412 | cmp [root_read],0 |
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413 | je unnecessary_root_save |
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414 | mov [FDD_Track],0 ; Цилиндр |
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415 | mov [FDD_Head],1 ; Сторона |
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131 | diamond | 416 | mov [FDD_Sector],2 ; Сектор |
380 | serge | 417 | mov esi,FLOPPY_BUFF |
1 | ha | 418 | call SeekTrack |
419 | save_flp_root_1: |
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420 | push esi |
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421 | call take_data_from_application_1 |
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422 | pop esi |
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423 | add esi,512 |
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424 | call WriteSectWithRetr |
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425 | cmp [FDC_Status],0 |
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426 | jne unnecessary_root_save |
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427 | inc [FDD_Sector] |
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428 | cmp [FDD_Sector],16 |
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429 | jne save_flp_root_1 |
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430 | unnecessary_root_save: |
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431 | mov [fdc_irq_func],fdc_null |
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432 | popa |
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433 | ret |
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131 | diamond | 434 | |
1 | ha | 435 | save_flp_fat: |
436 | pusha |
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437 | call check_label |
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438 | cmp [FDC_Status],0 |
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439 | jne unnecessary_flp_fat_save |
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440 | cmp [flp_fat],0 |
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441 | je unnecessary_flp_fat_save |
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442 | call restorefatchain_flp |
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443 | mov [FDD_Track],0 ; Цилиндр |
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444 | mov [FDD_Head],0 ; Сторона |
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131 | diamond | 445 | mov [FDD_Sector],2 ; Сектор |
380 | serge | 446 | mov esi,FLOPPY_BUFF |
1 | ha | 447 | call SeekTrack |
448 | save_flp_fat_1: |
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449 | push esi |
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450 | call take_data_from_application_1 |
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451 | pop esi |
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452 | add esi,512 |
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453 | call WriteSectWithRetr |
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454 | cmp [FDC_Status],0 |
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455 | jne unnecessary_flp_fat_save |
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456 | inc [FDD_Sector] |
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457 | cmp [FDD_Sector],19 |
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458 | jne save_flp_fat_1 |
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459 | mov [FDD_Sector],1 |
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460 | mov [FDD_Head],1 |
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461 | call take_data_from_application_1 |
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462 | call WriteSectWithRetr |
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463 | cmp [FDC_Status],0 |
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464 | jne unnecessary_flp_fat_save |
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465 | mov [root_read],0 |
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466 | unnecessary_flp_fat_save: |
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467 | mov [fdc_irq_func],fdc_null |
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468 | popa |
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469 | ret |
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470 | |||
131 | diamond | 471 | |
1 | ha | 472 | restorefatchain_flp: ; restore fat chain |
473 | pushad |
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474 | |||
381 | serge | 475 | mov esi,FLOPPY_FAT |
380 | serge | 476 | mov edi,FLOPPY_BUFF |
1 | ha | 477 | |
478 | fcnew2_1: |
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479 | mov eax,dword [esi] |
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480 | mov ebx,dword [esi+4] |
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481 | shl ax,4 |
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482 | shl eax,4 |
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483 | shl bx,4 |
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484 | shr ebx,4 |
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485 | shrd eax,ebx,8 |
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486 | shr ebx,8 |
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487 | mov dword [edi],eax |
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488 | add edi,4 |
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489 | mov word [edi],bx |
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490 | add edi,2 |
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491 | add esi,8 |
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492 | |||
380 | serge | 493 | cmp edi,FLOPPY_BUFF+0x1200 ;4274 bytes - all used FAT |
1 | ha | 494 | jb fcnew2_1 |
495 | |||
380 | serge | 496 | mov esi,FLOPPY_BUFF ; duplicate fat chain |
497 | mov edi,FLOPPY_BUFF+0x1200 |
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1 | ha | 498 | mov ecx,0x1200/4 |
499 | cld |
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500 | rep movsd |
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501 | |||
502 | popad |
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503 | ret |
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504 | |||
505 | |||
506 | floppy_filedelete: |
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507 | ;-------------------------------------------- |
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508 | ; |
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509 | ; filedelete - sys floppy |
||
510 | ; in: |
||
511 | ; eax - filename 11 chars - for root directory |
||
512 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
||
513 | ; |
||
514 | ; out: |
||
515 | ; eax - 0 = successful, 1 = file not found, 10 = access denied |
||
516 | ; |
||
517 | ;-------------------------------------------- |
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518 | mov [path_pointer_flp],edi |
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519 | mov [save_flag],0 |
||
520 | mov ebp,1 ; file not found as default |
||
521 | filedelete_newtry_1: |
||
522 | sub esp,32 |
||
523 | call expand_filename |
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524 | push eax ebx ecx edx esi edi |
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525 | call read_flp_fat |
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526 | cmp [FDC_Status],0 |
||
527 | jne frnoreadd_1 |
||
528 | mov [FDD_Track],0 ; Цилиндр |
||
529 | mov [FDD_Head],1 ; Сторона |
||
530 | mov [FDD_Sector],2 ; Сектор |
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531 | call SeekTrack |
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532 | mov dh,14 |
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533 | l.20_2: |
||
534 | call ReadSectWithRetr |
||
535 | cmp [FDC_Status],0 |
||
536 | jne fdc_status_error_4 |
||
537 | mov dl,16 |
||
380 | serge | 538 | mov edi,FDD_BUFF |
1 | ha | 539 | inc [FDD_Sector] |
540 | l.21_2: |
||
541 | mov esi,eax ;Name of file we want |
||
542 | mov ecx,11 |
||
543 | cld |
||
544 | rep cmpsb ;Found the file? |
||
545 | je fifoundd_1 ;Yes |
||
546 | add ecx,21 |
||
547 | add edi, ecx ;Advance to next entry |
||
548 | dec dl |
||
549 | jne l.21_2 |
||
550 | dec dh |
||
551 | jne l.20_2 |
||
552 | jmp frnoreadd_1 |
||
553 | |||
554 | fdc_status_error_4: |
||
555 | pop edi esi edx ecx ebx eax |
||
556 | add esp,32 |
||
557 | jmp fdc_status_error_1 |
||
558 | |||
559 | fifoundd_1: |
||
560 | mov eax,[path_pointer_flp] |
||
561 | cmp [eax+36],byte 0 |
||
562 | je fifoundd_2 |
||
83 | diamond | 563 | movzx eax, word [edi+0xf] |
1 | ha | 564 | mov ebx,[path_pointer_flp] |
565 | add ebx,36 |
||
566 | call get_cluster_of_a_path_flp |
||
131 | diamond | 567 | jc frnoreadd_1_1 |
1 | ha | 568 | mov edi,ebx |
569 | add edi,11 |
||
570 | jmp fifoundd_2_1 |
||
571 | fifoundd_2: |
||
572 | dec [FDD_Sector] |
||
573 | fifoundd_2_1: |
||
574 | mov [edi-11],byte 0xE5 ;mark filename deleted |
||
83 | diamond | 575 | movzx edi, word [edi+0xf] ;edi = cluster |
1 | ha | 576 | frnewd_1: |
577 | shl edi,1 ;find next cluster from FAT |
||
381 | serge | 578 | add edi,FLOPPY_FAT |
1 | ha | 579 | mov eax,[edi] |
580 | mov [edi],word 0x0 ;clear fat chain cluster |
||
581 | and eax,4095 |
||
582 | mov edi,eax |
||
583 | cmp edi,dword 4095 ;last cluster ? |
||
584 | jz frnoreadd2_1 |
||
585 | jmp frnewd_1 |
||
586 | |||
587 | frnoreadd2_1: |
||
588 | call WriteSectWithRetr |
||
589 | cmp [FDC_Status],0 |
||
590 | jne fdc_status_error_4 |
||
591 | call save_flp_fat |
||
592 | cmp [FDC_Status],0 |
||
593 | jne fdc_status_error_4 |
||
594 | ; pop edi esi edx ecx ebx eax |
||
595 | ; add esp,32 |
||
596 | mov ebp,0 ; file found |
||
597 | ; jmp filedelete_newtry_1 |
||
598 | jmp frnoreadd_1 |
||
599 | |||
600 | frnoreadd_1_1: |
||
601 | cmp [FDC_Status],0 |
||
602 | jne fdc_status_error_4 |
||
603 | frnoreadd_1: |
||
604 | pop edi esi edx ecx ebx eax |
||
605 | add esp,32 |
||
606 | mov eax,ebp |
||
607 | ret |
||
608 | |||
609 | floppy_filesave: |
||
610 | ;---------------------------------------------------------- |
||
611 | ; |
||
612 | ; filesave - sys floppy |
||
613 | ; |
||
614 | ; eax ; pointer to file name 11 chars - for root directory |
||
615 | ; ebx ; buffer |
||
616 | ; ecx ; count to write in bytes |
||
617 | ; edx ; 0 create new , 1 append |
||
618 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
||
619 | ; |
||
620 | ; output : eax = 0 - ok |
||
131 | diamond | 621 | ; 5 - file not found / directory not found |
1 | ha | 622 | ; 8 - disk full |
623 | ; 10 - access denied |
||
624 | ;----------------------------------------------------------- |
||
625 | mov [path_pointer_flp],edi |
||
626 | sub esp,32 |
||
627 | call expand_filename |
||
628 | cmp edx,0 |
||
629 | jnz fsdel_1 |
||
630 | pusha |
||
631 | call floppy_filedelete |
||
632 | cmp [FDC_Status],0 |
||
633 | jne fdc_status_error_6 |
||
634 | popa |
||
635 | mov [save_flag],1 |
||
636 | fsdel_1: |
||
637 | call floppy_free_space |
||
638 | cmp [FDC_Status],0 |
||
639 | jne fdc_status_error_6 |
||
640 | cmp ecx,edi |
||
641 | jb rd_do_save_1 |
||
642 | add esp,32 |
||
643 | mov eax,8 ; not enough free space |
||
644 | mov [flp_status],0 |
||
645 | ret |
||
646 | |||
647 | fdc_status_error_6: |
||
131 | diamond | 648 | popa |
1 | ha | 649 | add esp,32 |
650 | jmp fdc_status_error_1 |
||
131 | diamond | 651 | |
1 | ha | 652 | rd_do_save_1: |
653 | push eax ebx ecx edx esi edi |
||
654 | call read_flp_fat |
||
655 | cmp [FDC_Status],0 |
||
656 | jne fdc_status_error_7 |
||
657 | push eax |
||
658 | mov eax,[path_pointer_flp] |
||
659 | cmp [eax+36],byte 0 |
||
660 | jne fifoundds_2 |
||
661 | pop eax |
||
662 | mov [save_root_flag],1 |
||
663 | call read_flp_root |
||
664 | cmp [FDC_Status],0 |
||
665 | jne fdc_status_error_7 |
||
380 | serge | 666 | mov edi,FLOPPY_BUFF ;Point at directory |
1 | ha | 667 | mov edx,224 +1 |
668 | ; find an empty spot for filename in the root dir |
||
669 | l20ds_1: |
||
670 | sub edx,1 |
||
83 | diamond | 671 | jz frnoreadds_1 |
1 | ha | 672 | l21ds_1: |
673 | cmp [edi],byte 0xE5 |
||
674 | jz fifoundds_1 |
||
675 | cmp [edi],byte 0x0 |
||
676 | jz fifoundds_1 |
||
677 | add edi,32 ; Advance to next entry |
||
678 | jmp l20ds_1 |
||
679 | |||
680 | fifoundds_2: |
||
681 | pop eax |
||
682 | mov [save_root_flag],0 |
||
683 | mov [FDD_Track],0 ; Цилиндр |
||
684 | mov [FDD_Head],1 ; Сторона |
||
685 | mov [FDD_Sector],2 ; Сектор |
||
686 | call SeekTrack |
||
687 | mov dh,14 |
||
688 | l.20_3: |
||
689 | call ReadSectWithRetr |
||
690 | cmp [FDC_Status],0 |
||
691 | jne fdc_status_error_7 |
||
692 | mov dl,16 |
||
380 | serge | 693 | mov edi,FDD_BUFF |
1 | ha | 694 | inc [FDD_Sector] |
695 | l.21_3: |
||
696 | mov esi,eax ;Name of file we want |
||
697 | mov ecx,11 |
||
698 | cld |
||
699 | rep cmpsb ;Found the file? |
||
700 | je fifoundds_3 ;Yes |
||
701 | add ecx,21 |
||
702 | add edi, ecx ;Advance to next entry |
||
703 | dec dl |
||
704 | jne l.21_3 |
||
705 | dec dh |
||
706 | jne l.20_3 |
||
707 | fdc_status_error_8: |
||
708 | pop edi esi edx ecx ebx eax |
||
709 | mov eax,5 ; file not found ? |
||
710 | mov ebx,-1 |
||
711 | add esp,32 |
||
712 | mov [flp_status],0 |
||
713 | ret |
||
714 | |||
715 | fifoundds_3: |
||
716 | add edi,0xf |
||
717 | mov eax,[edi] |
||
718 | and eax,65535 |
||
719 | mov ebx,[path_pointer_flp] |
||
720 | add ebx,36 |
||
721 | call get_cluster_of_a_path_flp |
||
722 | jc fdc_status_error_7_1 |
||
723 | found_directory_for_writing_flp: |
||
724 | call analyze_directory_to_write_flp |
||
725 | jc fdc_status_error_7_1 |
||
726 | mov edi,ebx |
||
727 | fifoundds_1: |
||
728 | push edi ; move the filename to root dir |
||
729 | mov esi,[esp+4+20] |
||
730 | cmp [save_root_flag],0 |
||
731 | jne fifoundds_4 |
||
732 | mov esi,[pointer_file_name_flp] |
||
733 | fifoundds_4: |
||
734 | mov ecx,11 |
||
735 | cld |
||
736 | rep movsb |
||
737 | pop edi |
||
738 | mov edx,edi |
||
739 | add edx,11+0xf ; edx <- cluster save position |
||
740 | mov ebx,[esp+12] ; save file size |
||
741 | mov [edi+28],ebx |
||
742 | mov [edi+11],byte 0x20 ; attribute |
||
743 | call get_date_for_file ; from FAT32.INC |
||
744 | mov [edi+24],ax ; date |
||
745 | mov [edi+18],ax ; date |
||
746 | call get_time_for_file ; from FAT32.INC |
||
747 | mov [edi+22],ax ; time |
||
748 | xor ax,ax |
||
749 | mov [edi+20],ax |
||
750 | mov ebx,1 ; first cluster |
||
751 | cmp [save_root_flag],0 |
||
752 | jne frnewds_1 |
||
131 | diamond | 753 | call frnewds_2 |
1 | ha | 754 | pusha |
755 | call WriteSectWithRetr |
||
756 | popa |
||
757 | cmp [FDC_Status],0 |
||
758 | jne fdc_status_error_7 |
||
759 | jmp frnewds_3 |
||
760 | |||
761 | frnewds_1: |
||
762 | call frnewds_2 |
||
763 | frnewds_3: |
||
764 | pusha ; move save to floppy cluster |
||
765 | add ebx,31 |
||
766 | mov eax,ebx |
||
767 | mov esi,[esp+32+16] |
||
768 | call take_data_from_application_1 |
||
769 | call save_chs_sector |
||
770 | cmp [FDC_Status],0 |
||
771 | jne fdc_status_error_7 |
||
772 | popa |
||
773 | mov eax,[esp+12] |
||
774 | cmp eax,512 |
||
775 | jb flnsa_1 |
||
776 | sub eax,512 |
||
777 | mov [esp+12],eax |
||
778 | mov eax,[esp+16] |
||
779 | add eax,512 |
||
780 | mov [esp+16],eax |
||
781 | jmp frnewds_1 |
||
782 | |||
783 | frnewds_2: |
||
784 | add ebx,1 |
||
785 | mov edi,ebx ; find free cluster in FAT |
||
786 | shl edi,1 |
||
381 | serge | 787 | add edi,FLOPPY_FAT |
1 | ha | 788 | mov eax,[edi] |
789 | and eax,4095 |
||
790 | jnz frnewds_2 |
||
791 | mov [edx],bx ; save next cluster pos. to prev cl. |
||
792 | mov edx,edi ; next save pos abs mem add |
||
793 | ret |
||
794 | |||
795 | flnsa_1: |
||
796 | mov [edi],word 4095 ; mark end of file - last cluster |
||
797 | cmp [save_root_flag],1 |
||
798 | jne flnsa_2 |
||
799 | call save_flp_root |
||
800 | cmp [FDC_Status],0 |
||
801 | jne fdc_status_error_7 |
||
802 | flnsa_2: |
||
803 | call save_flp_fat |
||
804 | cmp [FDC_Status],0 |
||
805 | jne fdc_status_error_7 |
||
806 | frnoreadds_1: |
||
807 | pop edi esi edx ecx ebx eax |
||
808 | add esp,32 |
||
809 | mov eax,0 |
||
810 | mov [flp_status],0 |
||
811 | ret |
||
812 | |||
813 | fdc_status_error_7_1: |
||
814 | cmp [FDC_Status],0 |
||
131 | diamond | 815 | je fdc_status_error_8 |
1 | ha | 816 | fdc_status_error_7: |
817 | pop edi esi edx ecx ebx eax |
||
818 | add esp,32 |
||
819 | jmp fdc_status_error_1 |
||
820 | |||
821 | save_chs_sector: |
||
822 | call calculate_chs |
||
823 | call WriteSectWithRetr |
||
824 | ret |
||
131 | diamond | 825 | |
1 | ha | 826 | calculate_chs: |
827 | mov bl,[FDD_Track] |
||
131 | diamond | 828 | mov [old_track],bl |
1 | ha | 829 | mov ebx,18 |
830 | xor edx,edx |
||
831 | div ebx |
||
832 | inc edx |
||
833 | mov [FDD_Sector],dl |
||
834 | xor edx,edx |
||
835 | mov ebx,2 |
||
836 | div ebx |
||
837 | mov [FDD_Track],al |
||
838 | mov [FDD_Head],0 |
||
839 | cmp edx,0 |
||
840 | je no_head_2 |
||
841 | inc [FDD_Head] |
||
842 | no_head_2: |
||
843 | mov dl,[old_track] |
||
844 | cmp dl,[FDD_Track] |
||
845 | je no_seek_track_1 |
||
846 | call SeekTrack |
||
847 | no_seek_track_1: |
||
848 | ret |
||
849 | |||
131 | diamond | 850 | |
1 | ha | 851 | get_cluster_of_a_path_flp: |
852 | ;--------------------------------------------------------- |
||
853 | ; input : EBX = pointer to a path string |
||
854 | ; (example: the path "/files/data/document" become |
||
855 | ; "files......data.......document...0" |
||
856 | ; '.' = space char |
||
857 | ; '0' = char(0) (ASCII=0) !!! ) |
||
858 | ; output : if (CARRY=1) -> ERROR in the PATH |
||
859 | ; if (CARRY=0) -> EAX=cluster |
||
860 | ;--------------------------------------------------------- |
||
861 | |||
862 | push edx |
||
863 | mov edx,ebx |
||
864 | |||
865 | search_end_of_path_flp: |
||
866 | cmp [save_flag],0 |
||
867 | jne search_end_of_path_flp_1 |
||
868 | cmp byte [edx],0 |
||
869 | je found_end_of_path_flp |
||
870 | jmp search_end_of_path_flp_2 |
||
871 | search_end_of_path_flp_1: |
||
872 | cmp byte [edx+12],0 |
||
873 | je found_end_of_path_flp |
||
874 | search_end_of_path_flp_2: |
||
875 | inc edx ; '/' |
||
876 | call analyze_directory_flp |
||
877 | jc directory_not_found_flp |
||
878 | |||
879 | mov eax,[ebx+20-2] ; read the HIGH 16bit cluster field |
||
880 | mov ax,[ebx+26] ; read the LOW 16bit cluster field |
||
881 | and eax,0xfff ;[fatMASK] |
||
882 | add edx,11 ; 8+3 (name+extension) |
||
883 | jmp search_end_of_path_flp |
||
884 | |||
885 | found_end_of_path_flp: |
||
886 | inc edx |
||
887 | mov [pointer_file_name_flp],edx |
||
888 | pop edx |
||
889 | clc ; no errors |
||
890 | ret |
||
891 | |||
892 | directory_not_found_flp: |
||
893 | pop edx |
||
894 | stc ; errors occour |
||
895 | ret |
||
131 | diamond | 896 | |
1 | ha | 897 | analyze_directory_flp: |
898 | ;-------------------------------- |
||
899 | ; input : EAX = first cluster of the directory |
||
900 | ; EBX = pointer to filename |
||
901 | ; output : IF CARRY=0 EAX = sector where th file is found |
||
902 | ; EBX = pointer in buffer |
||
903 | ; [buffer .. buffer+511] |
||
904 | ; ECX,EDX,EDI,EDI not changed |
||
905 | ; IF CARRY=1 |
||
906 | ;-------------------------------- |
||
907 | push ebx ;[esp+16] |
||
908 | push ecx |
||
909 | push edx |
||
910 | push esi |
||
911 | push edi |
||
131 | diamond | 912 | |
913 | |||
1 | ha | 914 | adr56_flp: |
915 | mov [clust_tmp_flp],eax |
||
916 | add eax,31 |
||
917 | pusha |
||
918 | call read_chs_sector |
||
919 | popa |
||
920 | cmp [FDC_Status],0 |
||
921 | jne not_found_file_analyze_flp |
||
922 | |||
923 | mov ecx,512/32 |
||
380 | serge | 924 | mov ebx,FDD_BUFF |
131 | diamond | 925 | |
1 | ha | 926 | adr1_analyze_flp: |
927 | mov esi,edx ;[esp+16] |
||
928 | mov edi,ebx |
||
929 | cld |
||
930 | push ecx |
||
931 | mov ecx,11 |
||
932 | rep cmpsb |
||
933 | pop ecx |
||
934 | je found_file_analyze_flp |
||
131 | diamond | 935 | |
1 | ha | 936 | add ebx,32 |
937 | loop adr1_analyze_flp |
||
131 | diamond | 938 | |
1 | ha | 939 | mov eax,[clust_tmp_flp] |
940 | shl eax,1 ;find next cluster from FAT |
||
381 | serge | 941 | add eax,FLOPPY_FAT |
1 | ha | 942 | mov eax,[eax] |
943 | and eax,4095 |
||
944 | cmp eax,0x0ff8 |
||
945 | jb adr56_flp |
||
131 | diamond | 946 | not_found_file_analyze_flp: |
1 | ha | 947 | pop edi |
948 | pop esi |
||
949 | pop edx |
||
950 | pop ecx |
||
951 | add esp,4 |
||
952 | stc ;file not found |
||
953 | ret |
||
131 | diamond | 954 | |
1 | ha | 955 | found_file_analyze_flp: |
956 | pop edi |
||
957 | pop esi |
||
958 | pop edx |
||
959 | pop ecx |
||
960 | add esp,4 |
||
961 | clc ;file found |
||
962 | ret |
||
131 | diamond | 963 | |
964 | |||
1 | ha | 965 | analyze_directory_to_write_flp: |
966 | ;-------------------------------- |
||
967 | ; input : EAX = first cluster of the directory |
||
968 | ; output : IF CARRY=0 EAX = sector where the file is found |
||
969 | ; EBX = pointer in buffer |
||
970 | ; [buffer .. buffer+511] |
||
971 | ; ECX,EDX,EDI,EDI not changed |
||
972 | ; IF CARRY=1 |
||
973 | ;-------------------------------- |
||
131 | diamond | 974 | |
1 | ha | 975 | push ecx |
976 | push edx |
||
977 | push esi |
||
131 | diamond | 978 | |
1 | ha | 979 | adr561: |
980 | mov [clust_tmp_flp],eax |
||
981 | add eax,31 |
||
982 | pusha |
||
131 | diamond | 983 | call read_chs_sector |
1 | ha | 984 | popa |
985 | cmp [FDC_Status],0 |
||
986 | jne error_found_file_analyze1 |
||
987 | |||
988 | mov ecx,512/32 |
||
380 | serge | 989 | mov ebx,FDD_BUFF |
131 | diamond | 990 | |
1 | ha | 991 | adr1_analyze1: |
992 | cmp byte [ebx],0x00 |
||
993 | je found_file_analyze1 |
||
994 | cmp byte [ebx],0xe5 |
||
995 | je found_file_analyze1 |
||
131 | diamond | 996 | |
1 | ha | 997 | avanti: |
998 | add ebx,32 |
||
999 | loop adr1_analyze1 |
||
131 | diamond | 1000 | |
1 | ha | 1001 | mov eax,[clust_tmp_flp] |
1002 | shl eax,1 ;find next cluster from FAT |
||
381 | serge | 1003 | add eax,FLOPPY_FAT |
1 | ha | 1004 | mov eax,[eax] |
1005 | and eax,4095 |
||
1006 | cmp eax,0x0ff8 |
||
1007 | jb adr561 |
||
131 | diamond | 1008 | |
1 | ha | 1009 | call get_free_FAT ;this block of code add a new cluster |
1010 | ;for the directory because the directory |
||
1011 | ;is full |
||
1012 | |||
1013 | mov [edi],word 0x0fff |
||
131 | diamond | 1014 | |
1 | ha | 1015 | mov eax,[clust_tmp_flp] |
1016 | shl eax,1 ;find next cluster from FAT |
||
381 | serge | 1017 | add eax,FLOPPY_FAT |
1018 | sub edi,FLOPPY_FAT |
||
1 | ha | 1019 | mov [eax],di |
1020 | |||
1021 | pusha |
||
1022 | mov ecx,512/4 |
||
1023 | xor eax,eax |
||
380 | serge | 1024 | mov edi,FDD_BUFF |
1 | ha | 1025 | cld |
1026 | rep stosd |
||
1027 | popa |
||
1028 | |||
1029 | mov eax,edi |
||
1030 | add eax,31 |
||
1031 | pusha |
||
131 | diamond | 1032 | call save_chs_sector |
1 | ha | 1033 | popa |
1034 | cmp [FDC_Status],0 |
||
1035 | jne error_found_file_analyze1 |
||
380 | serge | 1036 | mov ebx,FDD_BUFF |
1 | ha | 1037 | |
1038 | found_file_analyze1: |
||
131 | diamond | 1039 | |
1 | ha | 1040 | pop esi |
1041 | pop edx |
||
1042 | pop ecx |
||
1043 | clc ;file found |
||
1044 | ret |
||
1045 | |||
1046 | error_found_file_analyze1: |
||
1047 | pop esi |
||
1048 | pop edx |
||
1049 | pop ecx |
||
1050 | stc |
||
131 | diamond | 1051 | ret |
1052 | |||
1 | ha | 1053 | get_free_FAT_flp: |
1054 | ;------------------------------------------ |
||
1055 | ; input : EAX = # cluster for start the searching |
||
1056 | ; output : EAX = # first cluster found free |
||
1057 | ;------------------------------------------- |
||
1058 | push ebx |
||
131 | diamond | 1059 | |
1 | ha | 1060 | mov ebx,1 |
1061 | check_new_flp: |
||
1062 | add ebx,1 |
||
1063 | mov edi,ebx ; find free cluster in FAT |
||
1064 | shl edi,1 |
||
381 | serge | 1065 | add edi,FLOPPY_FAT |
1 | ha | 1066 | mov eax,[edi] |
1067 | and eax,4095 |
||
1068 | cmp eax,0x0 |
||
1069 | jnz check_new_flp |
||
1070 | |||
1071 | pop ebx |
||
1072 | ret |
||
71 | diamond | 1073 | |
1074 | ; \begin{diamond} |
||
83 | diamond | 1075 | fat_find_lfn: |
71 | diamond | 1076 | ; in: esi->name |
83 | diamond | 1077 | ; [esp+4] = next |
1078 | ; [esp+8] = first |
||
1079 | ; [esp+C]... - possibly parameters for first and next |
||
71 | diamond | 1080 | ; out: CF=1 - file not found |
83 | diamond | 1081 | ; else CF=0, esi->next name component, edi->direntry |
75 | diamond | 1082 | pusha |
83 | diamond | 1083 | lea eax, [esp+0Ch+20h] |
1084 | call dword [eax-4] |
||
1085 | jc .reterr |
||
75 | diamond | 1086 | sub esp, 262*2 ; reserve place for LFN |
1087 | mov ebp, esp |
||
1088 | push 0 ; for fat_get_name: read ASCII name |
||
83 | diamond | 1089 | .l1: |
75 | diamond | 1090 | call fat_get_name |
83 | diamond | 1091 | jc .l2 |
75 | diamond | 1092 | call fat_compare_name |
1093 | jz .found |
||
83 | diamond | 1094 | .l2: |
1095 | lea eax, [esp+0Ch+20h+262*2+4] |
||
1096 | call dword [eax-8] |
||
1097 | jnc .l1 |
||
75 | diamond | 1098 | add esp, 262*2+4 |
83 | diamond | 1099 | .reterr: |
1100 | stc |
||
75 | diamond | 1101 | popa |
1102 | ret |
||
71 | diamond | 1103 | .found: |
83 | diamond | 1104 | add esp, 262*2+4 |
1105 | ; if this is LFN entry, advance to true entry |
||
75 | diamond | 1106 | cmp byte [edi+11], 0xF |
83 | diamond | 1107 | jnz @f |
1108 | lea eax, [esp+0Ch+20h] |
||
1109 | call dword [eax-8] |
||
1110 | jc .reterr |
||
1111 | @@: |
||
1112 | add esp, 8 ; CF=0 |
||
1113 | push esi |
||
1114 | push edi |
||
1115 | popa |
||
1116 | ret |
||
1117 | |||
171 | diamond | 1118 | uglobal |
1119 | ; this is for delete support |
||
1120 | fd_prev_sector dd ? |
||
1121 | fd_prev_prev_sector dd ? |
||
1122 | endg |
||
1123 | |||
83 | diamond | 1124 | flp_root_next: |
1125 | cmp edi, 0xD200-0x20 |
||
1126 | jae @f |
||
75 | diamond | 1127 | add edi, 0x20 |
83 | diamond | 1128 | ret ; CF=0 |
1129 | @@: |
||
1130 | ; read next sector |
||
1131 | inc dword [eax] |
||
1132 | cmp dword [eax], 14 |
||
1133 | jae flp_root_first.readerr |
||
171 | diamond | 1134 | push [fd_prev_sector] |
1135 | pop [fd_prev_prev_sector] |
||
1136 | push eax |
||
1137 | mov eax, [eax] |
||
1138 | add eax, 19-1 |
||
1139 | mov [fd_prev_sector], eax |
||
1140 | pop eax |
||
83 | diamond | 1141 | flp_root_first: |
1142 | mov eax, [eax] |
||
1143 | pusha |
||
1144 | add eax, 19 |
||
75 | diamond | 1145 | call read_chs_sector |
83 | diamond | 1146 | popa |
75 | diamond | 1147 | cmp [FDC_Status], 0 |
83 | diamond | 1148 | jnz .readerr |
380 | serge | 1149 | mov edi, FDD_BUFF |
83 | diamond | 1150 | ret ; CF=0 |
1151 | .readerr: |
||
1152 | stc |
||
1153 | ret |
||
1154 | |||
1155 | flp_rootmem_first: |
||
380 | serge | 1156 | mov edi, FLOPPY_BUFF |
83 | diamond | 1157 | clc |
1158 | ret |
||
1159 | flp_rootmem_next: |
||
1160 | add edi, 0x20 |
||
380 | serge | 1161 | cmp edi, FLOPPY_BUFF+14*0x200 |
83 | diamond | 1162 | cmc |
1163 | flp_rootmem_next_write: |
||
1164 | flp_rootmem_begin_write: |
||
1165 | flp_rootmem_end_write: |
||
1166 | ret |
||
1167 | flp_rootmem_extend_dir: |
||
1168 | stc |
||
1169 | ret |
||
1170 | |||
1171 | flp_notroot_next: |
||
1172 | cmp edi, 0xD200-0x20 |
||
1173 | jae flp_notroot_next_sector |
||
1174 | add edi, 0x20 |
||
1175 | ret ; CF=0 |
||
1176 | flp_notroot_next_sector: |
||
1177 | push ecx |
||
1178 | mov ecx, [eax] |
||
171 | diamond | 1179 | push [fd_prev_sector] |
1180 | pop [fd_prev_prev_sector] |
||
1181 | add ecx, 31 |
||
1182 | mov [fd_prev_sector], ecx |
||
381 | serge | 1183 | mov ecx, [(ecx-31)*2+FLOPPY_FAT] |
83 | diamond | 1184 | and ecx, 0xFFF |
1185 | cmp ecx, 2849 |
||
1186 | jae flp_notroot_first.err2 |
||
1187 | mov [eax], ecx |
||
1188 | pop ecx |
||
1189 | flp_notroot_first: |
||
1190 | mov eax, [eax] |
||
1191 | cmp eax, 2 |
||
1192 | jb .err |
||
1193 | cmp eax, 2849 |
||
1194 | jae .err |
||
1195 | pusha |
||
75 | diamond | 1196 | add eax, 31 |
83 | diamond | 1197 | call read_chs_sector |
1198 | popa |
||
380 | serge | 1199 | mov edi, FDD_BUFF |
83 | diamond | 1200 | cmp [FDC_Status], 0 |
1201 | jnz .err |
||
1202 | ret ; CF=0 |
||
1203 | .err2: |
||
1204 | pop ecx |
||
1205 | .err: |
||
1206 | stc |
||
75 | diamond | 1207 | ret |
83 | diamond | 1208 | flp_notroot_begin_write: |
1209 | pusha |
||
1210 | mov eax, [eax] |
||
1211 | add eax, 31 |
||
1212 | call read_chs_sector |
||
1213 | popa |
||
1214 | ret |
||
1215 | flp_notroot_end_write: |
||
1216 | pusha |
||
1217 | mov eax, [eax] |
||
1218 | add eax, 31 |
||
1219 | call save_chs_sector |
||
1220 | popa |
||
1221 | ret |
||
1222 | flp_notroot_next_write: |
||
1223 | cmp edi, 0xD200 |
||
1224 | jae @f |
||
1225 | ret |
||
1226 | @@: |
||
1227 | call flp_notroot_end_write |
||
1228 | jmp flp_notroot_next_sector |
||
1229 | flp_notroot_extend_dir: |
||
1230 | ; find free cluster in FAT |
||
1231 | pusha |
||
1232 | xor eax, eax |
||
381 | serge | 1233 | mov edi, FLOPPY_FAT |
83 | diamond | 1234 | mov ecx, 2849 |
1235 | repnz scasw |
||
1236 | jnz .notfound |
||
1237 | mov word [edi-2], 0xFFF ; mark as last cluster |
||
381 | serge | 1238 | sub edi, FLOPPY_FAT |
83 | diamond | 1239 | shr edi, 1 |
1240 | dec edi |
||
1241 | mov eax, [esp+28] |
||
1242 | mov ecx, [eax] |
||
381 | serge | 1243 | mov [FLOPPY_FAT+ecx*2], di |
83 | diamond | 1244 | mov [eax], edi |
1245 | xor eax, eax |
||
380 | serge | 1246 | mov edi, FDD_BUFF |
83 | diamond | 1247 | mov ecx, 128 |
1248 | rep stosd |
||
1249 | popa |
||
1250 | call flp_notroot_end_write |
||
380 | serge | 1251 | mov edi, FDD_BUFF |
83 | diamond | 1252 | clc |
1253 | ret |
||
1254 | .notfound: |
||
1255 | popa |
||
1256 | stc |
||
1257 | ret |
||
71 | diamond | 1258 | |
83 | diamond | 1259 | fd_find_lfn: |
1260 | ; in: esi->name |
||
1261 | ; out: CF=1 - file not found |
||
86 | diamond | 1262 | ; else CF=0 and edi->direntry, eax=directory cluster (0 for root) |
83 | diamond | 1263 | push esi edi |
1264 | push 0 |
||
1265 | push flp_root_first |
||
1266 | push flp_root_next |
||
1267 | .loop: |
||
1268 | call fat_find_lfn |
||
1269 | jc .notfound |
||
1270 | cmp byte [esi], 0 |
||
1271 | jz .found |
||
1272 | test byte [edi+11], 10h |
||
1273 | jz .notfound |
||
1274 | movzx eax, word [edi+26] ; cluster |
||
1275 | mov [esp+8], eax |
||
1276 | mov dword [esp+4], flp_notroot_first |
||
1277 | mov dword [esp], flp_notroot_next |
||
1278 | jmp .loop |
||
1279 | .notfound: |
||
1280 | add esp, 12 |
||
1281 | pop edi esi |
||
1282 | stc |
||
1283 | ret |
||
1284 | .found: |
||
86 | diamond | 1285 | mov eax, [esp+8] |
131 | diamond | 1286 | add eax, 31 |
1287 | cmp dword [esp], flp_root_next |
||
1288 | jnz @f |
||
1289 | add eax, -31+19 |
||
1290 | @@: |
||
83 | diamond | 1291 | add esp, 16 ; CF=0 |
1292 | pop esi |
||
1293 | ret |
||
1294 | |||
71 | diamond | 1295 | ;---------------------------------------------------------------- |
1296 | ; |
||
1297 | ; fs_FloppyRead - LFN variant for reading floppy |
||
1298 | ; |
||
1299 | ; esi points to filename |
||
1300 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
||
1301 | ; may be ebx=0 - start from first byte |
||
1302 | ; ecx number of bytes to read, 0+ |
||
1303 | ; edx mem location to return data |
||
1304 | ; |
||
77 | diamond | 1305 | ; ret ebx = bytes read or 0xffffffff file not found |
71 | diamond | 1306 | ; eax = 0 ok read or other = errormsg |
1307 | ; |
||
1308 | ;-------------------------------------------------------------- |
||
1309 | fs_FloppyRead: |
||
75 | diamond | 1310 | call read_flp_fat |
1311 | cmp byte [esi], 0 |
||
1312 | jnz @f |
||
1313 | or ebx, -1 |
||
1314 | mov eax, 10 ; access denied |
||
1315 | ret |
||
71 | diamond | 1316 | @@: |
75 | diamond | 1317 | push edi |
1318 | call fd_find_lfn |
||
1319 | jnc .found |
||
1320 | pop edi |
||
1321 | or ebx, -1 |
||
1322 | mov eax, 5 ; file not found |
||
1323 | ret |
||
71 | diamond | 1324 | .found: |
75 | diamond | 1325 | test ebx, ebx |
1326 | jz .l1 |
||
1327 | cmp dword [ebx+4], 0 |
||
1328 | jz @f |
||
77 | diamond | 1329 | xor ebx, ebx |
71 | diamond | 1330 | .reteof: |
75 | diamond | 1331 | mov eax, 6 ; EOF |
1332 | pop edi |
||
1333 | ret |
||
71 | diamond | 1334 | @@: |
75 | diamond | 1335 | mov ebx, [ebx] |
71 | diamond | 1336 | .l1: |
77 | diamond | 1337 | push ecx edx |
1338 | push 0 |
||
1339 | mov eax, [edi+28] |
||
1340 | sub eax, ebx |
||
1341 | jb .eof |
||
1342 | cmp eax, ecx |
||
1343 | jae @f |
||
1344 | mov ecx, eax |
||
1345 | mov byte [esp], 6 ; EOF |
||
1346 | @@: |
||
75 | diamond | 1347 | movzx edi, word [edi+26] |
71 | diamond | 1348 | .new: |
75 | diamond | 1349 | jecxz .done |
1350 | test edi, edi |
||
1351 | jz .eof |
||
1352 | cmp edi, 0xFF8 |
||
1353 | jae .eof |
||
113 | diamond | 1354 | sub ebx, 512 |
1355 | jae .skip |
||
77 | diamond | 1356 | lea eax, [edi+31] |
75 | diamond | 1357 | pusha |
1358 | call read_chs_sector |
||
1359 | popa |
||
1360 | cmp [FDC_Status], 0 |
||
1361 | jnz .err |
||
380 | serge | 1362 | lea eax, [FDD_BUFF+ebx+512] |
75 | diamond | 1363 | neg ebx |
1364 | push ecx |
||
1365 | cmp ecx, ebx |
||
1366 | jbe @f |
||
1367 | mov ecx, ebx |
||
71 | diamond | 1368 | @@: |
75 | diamond | 1369 | mov ebx, edx |
1370 | call memmove |
||
1371 | add edx, ecx |
||
1372 | sub [esp], ecx |
||
1373 | pop ecx |
||
1374 | xor ebx, ebx |
||
71 | diamond | 1375 | .skip: |
381 | serge | 1376 | movzx edi, word [edi*2+FLOPPY_FAT] |
75 | diamond | 1377 | jmp .new |
71 | diamond | 1378 | .done: |
77 | diamond | 1379 | mov ebx, edx |
1380 | pop eax edx ecx edi |
||
1381 | sub ebx, edx |
||
75 | diamond | 1382 | ret |
71 | diamond | 1383 | .eof: |
77 | diamond | 1384 | mov ebx, edx |
1385 | pop eax edx ecx |
||
75 | diamond | 1386 | jmp .reteof |
71 | diamond | 1387 | .err: |
77 | diamond | 1388 | mov ebx, edx |
1389 | pop eax edx ecx edi |
||
1390 | sub ebx, edx |
||
83 | diamond | 1391 | mov al, 11 |
75 | diamond | 1392 | ret |
1393 | |||
1394 | ;---------------------------------------------------------------- |
||
1395 | ; |
||
1396 | ; fs_FloppyReadFolder - LFN variant for reading floppy folders |
||
1397 | ; |
||
1398 | ; esi points to filename |
||
78 | diamond | 1399 | ; ebx pointer to structure: 32-bit number = first wanted block, 0+ |
1400 | ; & flags (bitfields) |
||
1401 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
||
75 | diamond | 1402 | ; ecx number of blocks to read, 0+ |
1403 | ; edx mem location to return data |
||
1404 | ; |
||
77 | diamond | 1405 | ; ret ebx = blocks read or 0xffffffff folder not found |
75 | diamond | 1406 | ; eax = 0 ok read or other = errormsg |
1407 | ; |
||
1408 | ;-------------------------------------------------------------- |
||
1409 | fs_FloppyReadFolder: |
||
1410 | call read_flp_fat |
||
1411 | push edi |
||
1412 | cmp byte [esi], 0 |
||
1413 | jz .root |
||
1414 | call fd_find_lfn |
||
1415 | jnc .found |
||
1416 | pop edi |
||
1417 | or ebx, -1 |
||
1418 | mov eax, ERROR_FILE_NOT_FOUND |
||
1419 | ret |
||
1420 | .found: |
||
1421 | test byte [edi+11], 0x10 ; do not allow read files |
||
1422 | jnz .found_dir |
||
1423 | pop edi |
||
1424 | or ebx, -1 |
||
1425 | mov eax, ERROR_ACCESS_DENIED |
||
1426 | ret |
||
1427 | .found_dir: |
||
1428 | movzx eax, word [edi+26] |
||
1429 | add eax, 31 |
||
1430 | push 0 |
||
1431 | jmp .doit |
||
1432 | .root: |
||
1433 | mov eax, 19 |
||
1434 | push 14 |
||
1435 | .doit: |
||
1436 | push ecx ebp |
||
1437 | sub esp, 262*2 ; reserve space for LFN |
||
1438 | mov ebp, esp |
||
78 | diamond | 1439 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE names |
1440 | mov ebx, [ebx] |
||
75 | diamond | 1441 | ; init header |
1442 | push eax ecx |
||
1443 | mov edi, edx |
||
1444 | mov ecx, 32/4 |
||
1445 | xor eax, eax |
||
1446 | rep stosd |
||
1447 | pop ecx eax |
||
1448 | mov byte [edx], 1 ; version |
||
1449 | mov esi, edi ; esi points to BDFE |
||
1450 | .main_loop: |
||
1451 | pusha |
||
1452 | call read_chs_sector |
||
1453 | popa |
||
1454 | cmp [FDC_Status], 0 |
||
1455 | jnz .error |
||
380 | serge | 1456 | mov edi, FDD_BUFF |
75 | diamond | 1457 | push eax |
1458 | .l1: |
||
1459 | call fat_get_name |
||
1460 | jc .l2 |
||
1461 | cmp byte [edi+11], 0xF |
||
1462 | jnz .do_bdfe |
||
1463 | add edi, 0x20 |
||
1464 | cmp edi, 0xD200 |
||
1465 | jb .do_bdfe |
||
1466 | pop eax |
||
1467 | inc eax |
||
1468 | dec byte [esp+262*2+12] |
||
1469 | jz .done |
||
1470 | jns @f |
||
1471 | ; read next sector from FAT |
||
381 | serge | 1472 | mov eax, [(eax-31-1)*2+FLOPPY_FAT] |
75 | diamond | 1473 | and eax, 0xFFF |
1474 | cmp eax, 0xFF8 |
||
1475 | jae .done |
||
1476 | add eax, 31 |
||
1477 | mov byte [esp+262*2+12], 0 |
||
1478 | @@: |
||
1479 | pusha |
||
1480 | call read_chs_sector |
||
1481 | popa |
||
1482 | cmp [FDC_Status], 0 |
||
1483 | jnz .error |
||
380 | serge | 1484 | mov edi, FDD_BUFF |
75 | diamond | 1485 | push eax |
1486 | .do_bdfe: |
||
1487 | inc dword [edx+8] ; new file found |
||
1488 | dec ebx |
||
1489 | jns .l2 |
||
1490 | dec ecx |
||
1491 | js .l2 |
||
1492 | inc dword [edx+4] ; new file block copied |
||
1493 | call fat_entry_to_bdfe |
||
1494 | .l2: |
||
1495 | add edi, 0x20 |
||
1496 | cmp edi, 0xD200 |
||
1497 | jb .l1 |
||
1498 | pop eax |
||
1499 | inc eax |
||
1500 | dec byte [esp+262*2+12] |
||
1501 | jz .done |
||
1502 | jns @f |
||
1503 | ; read next sector from FAT |
||
381 | serge | 1504 | mov eax, [(eax-31-1)*2+FLOPPY_FAT] |
75 | diamond | 1505 | and eax, 0xFFF |
1506 | cmp eax, 0xFF8 |
||
1507 | jae .done |
||
1508 | add eax, 31 |
||
1509 | mov byte [esp+262*2+12], 0 |
||
1510 | @@: |
||
1511 | jmp .main_loop |
||
1512 | .error: |
||
1513 | add esp, 262*2+4 |
||
1514 | pop ebp ecx edi edi |
||
1515 | or ebx, -1 |
||
1516 | mov eax, ERROR_FILE_NOT_FOUND |
||
1517 | ret |
||
1518 | .done: |
||
1519 | add esp, 262*2+4 |
||
1520 | pop ebp |
||
77 | diamond | 1521 | mov ebx, [edx+4] |
75 | diamond | 1522 | xor eax, eax |
1523 | dec ecx |
||
1524 | js @f |
||
1525 | mov al, ERROR_END_OF_FILE |
||
1526 | @@: |
||
1527 | pop ecx edi edi |
||
1528 | ret |
||
1529 | |||
83 | diamond | 1530 | ;---------------------------------------------------------------- |
1531 | ; |
||
1532 | ; fs_FloppyRewrite - LFN variant for writing sys floppy |
||
1533 | ; |
||
1534 | ; esi points to filename |
||
1535 | ; ebx ignored (reserved) |
||
1536 | ; ecx number of bytes to write, 0+ |
||
1537 | ; edx mem location to data |
||
1538 | ; |
||
1539 | ; ret ebx = number of written bytes |
||
1540 | ; eax = 0 ok read or other = errormsg |
||
1541 | ; |
||
1542 | ;-------------------------------------------------------------- |
||
1543 | @@: |
||
1544 | mov eax, ERROR_ACCESS_DENIED |
||
1545 | xor ebx, ebx |
||
1546 | ret |
||
1547 | fsfrfe2: |
||
1548 | popad |
||
1549 | fsfrfe: |
||
1550 | mov eax, 11 |
||
1551 | xor ebx, ebx |
||
1552 | ret |
||
1553 | |||
321 | diamond | 1554 | fs_FloppyCreateFolder: |
1555 | mov al, 1 |
||
1556 | jmp fs_FloppyRewrite.common |
||
1557 | |||
83 | diamond | 1558 | fs_FloppyRewrite: |
321 | diamond | 1559 | xor eax, eax |
1560 | .common: |
||
83 | diamond | 1561 | cmp byte [esi], 0 |
1562 | jz @b |
||
1563 | call read_flp_fat |
||
1564 | cmp [FDC_Status], 0 |
||
1565 | jnz fsfrfe |
||
1566 | pushad |
||
1567 | xor ebp, ebp |
||
1568 | push esi |
||
1569 | @@: |
||
1570 | lodsb |
||
1571 | test al, al |
||
1572 | jz @f |
||
1573 | cmp al, '/' |
||
1574 | jnz @b |
||
1575 | lea ebp, [esi-1] |
||
1576 | jmp @b |
||
1577 | @@: |
||
1578 | pop esi |
||
1579 | test ebp, ebp |
||
1580 | jnz .noroot |
||
1581 | call read_flp_root |
||
1582 | cmp [FDC_Status], 0 |
||
1583 | jnz fsfrfe2 |
||
1584 | push flp_rootmem_extend_dir |
||
1585 | push flp_rootmem_end_write |
||
1586 | push flp_rootmem_next_write |
||
1587 | push flp_rootmem_begin_write |
||
1588 | xor ebp, ebp |
||
1589 | push ebp |
||
1590 | push flp_rootmem_first |
||
1591 | push flp_rootmem_next |
||
1592 | jmp .common1 |
||
1593 | .noroot: |
||
335 | diamond | 1594 | mov eax, ERROR_ACCESS_DENIED |
1595 | cmp byte [ebp+1], 0 |
||
1596 | jz .ret1 |
||
83 | diamond | 1597 | ; check existence |
1598 | mov byte [ebp], 0 |
||
1599 | call fd_find_lfn |
||
1600 | mov byte [ebp], '/' |
||
1601 | lea esi, [ebp+1] |
||
1602 | jnc @f |
||
1603 | mov eax, ERROR_FILE_NOT_FOUND |
||
1604 | .ret1: |
||
1605 | mov [esp+28], eax |
||
1606 | popad |
||
1607 | xor ebx, ebx |
||
1608 | ret |
||
1609 | @@: |
||
1610 | test byte [edi+11], 0x10 ; must be directory |
||
1611 | mov eax, ERROR_ACCESS_DENIED |
||
1612 | jz .ret1 |
||
1613 | movzx ebp, word [edi+26] ; ebp=cluster |
||
1614 | mov eax, ERROR_FAT_TABLE |
||
1615 | cmp ebp, 2 |
||
1616 | jb .ret1 |
||
1617 | cmp ebp, 2849 |
||
1618 | jae .ret1 |
||
1619 | push flp_notroot_extend_dir |
||
1620 | push flp_notroot_end_write |
||
1621 | push flp_notroot_next_write |
||
1622 | push flp_notroot_begin_write |
||
1623 | push ebp |
||
1624 | push flp_notroot_first |
||
1625 | push flp_notroot_next |
||
1626 | .common1: |
||
1627 | call fat_find_lfn |
||
1628 | jc .notfound |
||
321 | diamond | 1629 | ; found |
91 | diamond | 1630 | test byte [edi+11], 10h |
321 | diamond | 1631 | jz .exists_file |
1632 | ; found directory; if we are creating directory, return OK, |
||
1633 | ; if we are creating file, say "access denied" |
||
1634 | add esp, 28 |
||
1635 | popad |
||
1636 | test al, al |
||
1637 | mov eax, ERROR_ACCESS_DENIED |
||
91 | diamond | 1638 | jz @f |
321 | diamond | 1639 | mov al, 0 |
1640 | @@: |
||
1641 | xor ebx, ebx |
||
1642 | ret |
||
1643 | .exists_file: |
||
1644 | ; found file; if we are creating directory, return "access denied", |
||
1645 | ; if we are creating file, delete existing file and continue |
||
1646 | cmp byte [esp+28+28], 0 |
||
1647 | jz @f |
||
91 | diamond | 1648 | add esp, 28 |
1649 | popad |
||
1650 | mov eax, ERROR_ACCESS_DENIED |
||
1651 | xor ebx, ebx |
||
1652 | ret |
||
1653 | @@: |
||
1654 | ; delete FAT chain |
||
83 | diamond | 1655 | push edi |
1656 | xor eax, eax |
||
1657 | mov dword [edi+28], eax ; zero size |
||
1658 | xchg ax, word [edi+26] ; start cluster |
||
1659 | test eax, eax |
||
1660 | jz .done1 |
||
1661 | @@: |
||
1662 | cmp eax, 0xFF8 |
||
1663 | jae .done1 |
||
321 | diamond | 1664 | lea edi, [FLOPPY_FAT + eax*2] ; position in FAT |
83 | diamond | 1665 | xor eax, eax |
1666 | xchg ax, [edi] |
||
1667 | jmp @b |
||
1668 | .done1: |
||
1669 | pop edi |
||
1670 | call get_time_for_file |
||
1671 | mov [edi+22], ax |
||
1672 | call get_date_for_file |
||
1673 | mov [edi+24], ax |
||
1674 | mov [edi+18], ax |
||
1675 | or byte [edi+11], 20h ; set 'archive' attribute |
||
1676 | jmp .doit |
||
1677 | .notfound: |
||
1678 | ; file is not found; generate short name |
||
1679 | call fat_name_is_legal |
||
1680 | jc @f |
||
1681 | add esp, 28 |
||
1682 | popad |
||
1683 | mov eax, ERROR_FILE_NOT_FOUND |
||
1684 | xor ebx, ebx |
||
1685 | ret |
||
1686 | @@: |
||
1687 | sub esp, 12 |
||
1688 | mov edi, esp |
||
1689 | call fat_gen_short_name |
||
1690 | .test_short_name_loop: |
||
1691 | push esi edi ecx |
||
1692 | mov esi, edi |
||
1693 | lea eax, [esp+12+12+8] |
||
1694 | mov [eax], ebp |
||
1695 | call dword [eax-4] |
||
1696 | jc .found |
||
1697 | .test_short_name_entry: |
||
1698 | cmp byte [edi+11], 0xF |
||
1699 | jz .test_short_name_cont |
||
1700 | mov ecx, 11 |
||
1701 | push esi edi |
||
1702 | repz cmpsb |
||
1703 | pop edi esi |
||
1704 | jz .short_name_found |
||
1705 | .test_short_name_cont: |
||
1706 | lea eax, [esp+12+12+8] |
||
1707 | call dword [eax-8] |
||
1708 | jnc .test_short_name_entry |
||
1709 | jmp .found |
||
1710 | .short_name_found: |
||
1711 | pop ecx edi esi |
||
1712 | call fat_next_short_name |
||
1713 | jnc .test_short_name_loop |
||
1714 | .disk_full: |
||
1715 | add esp, 12+28 |
||
1716 | popa |
||
1717 | mov eax, ERROR_DISK_FULL |
||
1718 | xor ebx, ebx |
||
1719 | ret |
||
1720 | .found: |
||
1721 | pop ecx edi esi |
||
1722 | ; now find space in directory |
||
1723 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
||
1724 | mov al, '~' |
||
1725 | push ecx edi |
||
1726 | mov ecx, 8 |
||
1727 | repnz scasb |
||
1728 | push 1 |
||
1729 | pop eax ; 1 entry |
||
1730 | jnz .notilde |
||
1731 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
||
1732 | xor eax, eax |
||
1733 | @@: |
||
1734 | cmp byte [esi], 0 |
||
1735 | jz @f |
||
1736 | inc esi |
||
1737 | inc eax |
||
1738 | jmp @b |
||
1739 | @@: |
||
1740 | sub esi, eax |
||
1741 | add eax, 12+13 |
||
1742 | mov ecx, 13 |
||
1743 | push edx |
||
1744 | cdq |
||
1745 | div ecx |
||
1746 | pop edx |
||
1747 | .notilde: |
||
1748 | push -1 |
||
1749 | push -1 |
||
1750 | ; find |
||
1751 | xor ecx, ecx |
||
1752 | push eax |
||
1753 | lea eax, [esp+12+8+12+8] |
||
1754 | mov [eax], ebp |
||
1755 | call dword [eax-4] |
||
1756 | pop eax |
||
1757 | jnc .scan_dir |
||
1758 | .fsfrfe3: |
||
1759 | add esp, 8+8+12+28 |
||
1760 | popad |
||
1761 | mov eax, 11 |
||
1762 | xor ebx, ebx |
||
1763 | ret |
||
1764 | .scan_dir: |
||
1765 | cmp byte [edi], 0 |
||
1766 | jz .free |
||
1767 | cmp byte [edi], 0xE5 |
||
1768 | jz .free |
||
1769 | xor ecx, ecx |
||
1770 | .scan_cont: |
||
1771 | push eax |
||
1772 | lea eax, [esp+12+8+12+8] |
||
1773 | call dword [eax-8] |
||
1774 | pop eax |
||
1775 | jnc .scan_dir |
||
1776 | cmp [FDC_Status], 0 |
||
1777 | jnz .fsfrfe3 |
||
1778 | push eax |
||
1779 | lea eax, [esp+12+8+12+8] |
||
1780 | call dword [eax+16] ; extend directory |
||
1781 | pop eax |
||
1782 | jnc .scan_dir |
||
1783 | add esp, 8+8+12+28 |
||
1784 | popad |
||
1785 | mov eax, ERROR_DISK_FULL |
||
1786 | xor ebx, ebx |
||
1787 | ret |
||
1788 | .free: |
||
1789 | test ecx, ecx |
||
1790 | jnz @f |
||
1791 | mov [esp], edi |
||
1792 | mov ecx, [esp+8+8+12+8] |
||
1793 | mov [esp+4], ecx |
||
1794 | xor ecx, ecx |
||
1795 | @@: |
||
1796 | inc ecx |
||
1797 | cmp ecx, eax |
||
1798 | jb .scan_cont |
||
1799 | ; found! |
||
1800 | ; calculate name checksum |
||
1801 | push esi ecx |
||
1802 | mov esi, [esp+8+8] |
||
1803 | mov ecx, 11 |
||
1804 | xor eax, eax |
||
1805 | @@: |
||
1806 | ror al, 1 |
||
1807 | add al, [esi] |
||
1808 | inc esi |
||
1809 | loop @b |
||
1810 | pop ecx esi |
||
1811 | pop edi |
||
1812 | pop dword [esp+8+12+8] |
||
1813 | ; edi points to first entry in free chunk |
||
1814 | dec ecx |
||
1815 | jz .nolfn |
||
1816 | push esi |
||
1817 | push eax |
||
1818 | lea eax, [esp+8+8+12+8] |
||
1819 | call dword [eax+4] ; begin write |
||
1820 | mov al, 40h |
||
1821 | .writelfn: |
||
1822 | or al, cl |
||
1823 | mov esi, [esp+4] |
||
1824 | push ecx |
||
1825 | dec ecx |
||
1826 | imul ecx, 13 |
||
1827 | add esi, ecx |
||
1828 | stosb |
||
1829 | mov cl, 5 |
||
1830 | call fs_RamdiskRewrite.read_symbols |
||
1831 | mov ax, 0xF |
||
1832 | stosw |
||
1833 | mov al, [esp+4] |
||
1834 | stosb |
||
1835 | mov cl, 6 |
||
1836 | call fs_RamdiskRewrite.read_symbols |
||
1837 | xor eax, eax |
||
1838 | stosw |
||
1839 | mov cl, 2 |
||
1840 | call fs_RamdiskRewrite.read_symbols |
||
1841 | pop ecx |
||
1842 | lea eax, [esp+8+8+12+8] |
||
1843 | call dword [eax+8] ; next write |
||
1844 | xor eax, eax |
||
1845 | loop .writelfn |
||
1846 | pop eax |
||
1847 | pop esi |
||
1848 | ; lea eax, [esp+8+12+8] |
||
1849 | ; call dword [eax+12] ; end write |
||
1850 | .nolfn: |
||
1851 | xchg esi, [esp] |
||
1852 | mov ecx, 11 |
||
1853 | rep movsb |
||
1854 | mov word [edi], 20h ; attributes |
||
1855 | sub edi, 11 |
||
1856 | pop esi ecx |
||
1857 | add esp, 12 |
||
1858 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
||
1859 | call get_time_for_file |
||
1860 | mov [edi+14], ax ; creation time |
||
1861 | mov [edi+22], ax ; last write time |
||
1862 | call get_date_for_file |
||
1863 | mov [edi+16], ax ; creation date |
||
1864 | mov [edi+24], ax ; last write date |
||
1865 | mov [edi+18], ax ; last access date |
||
1866 | and word [edi+20], 0 ; high word of cluster |
||
1867 | and word [edi+26], 0 ; low word of cluster - to be filled |
||
1868 | and dword [edi+28], 0 ; file size - to be filled |
||
321 | diamond | 1869 | cmp byte [esp+28+28], 0 |
1870 | jz .doit |
||
1871 | ; create directory |
||
1872 | mov byte [edi+11], 10h ; attributes: folder |
||
1873 | mov ecx, 32*2 |
||
1874 | mov edx, edi |
||
83 | diamond | 1875 | .doit: |
1876 | lea eax, [esp+8] |
||
1877 | call dword [eax+12] ; flush directory |
||
1878 | push ecx |
||
1879 | push edi |
||
133 | diamond | 1880 | push 0 |
83 | diamond | 1881 | mov esi, edx |
321 | diamond | 1882 | test ecx, ecx |
1883 | jz .done |
||
83 | diamond | 1884 | mov ecx, 2849 |
321 | diamond | 1885 | mov edi, FLOPPY_FAT |
83 | diamond | 1886 | push 0 ; first cluster |
1887 | .write_loop: |
||
1888 | ; allocate new cluster |
||
1889 | xor eax, eax |
||
1890 | repnz scasw |
||
1891 | mov al, ERROR_DISK_FULL |
||
1892 | jnz .ret |
||
1893 | dec edi |
||
1894 | dec edi |
||
321 | diamond | 1895 | lea eax, [edi-(FLOPPY_FAT)] |
83 | diamond | 1896 | shr eax, 1 ; eax = cluster |
1897 | mov word [edi], 0xFFF ; mark as last cluster |
||
133 | diamond | 1898 | xchg edi, [esp+4] |
83 | diamond | 1899 | cmp dword [esp], 0 |
1900 | jz .first |
||
1901 | stosw |
||
1902 | jmp @f |
||
1903 | .first: |
||
1904 | mov [esp], eax |
||
1905 | @@: |
||
133 | diamond | 1906 | mov edi, [esp+4] |
83 | diamond | 1907 | inc ecx |
1908 | ; write data |
||
1909 | push ecx edi |
||
1910 | mov ecx, 512 |
||
1911 | cmp dword [esp+20], ecx |
||
1912 | jae @f |
||
1913 | mov ecx, [esp+20] |
||
1914 | @@: |
||
380 | serge | 1915 | mov edi, FDD_BUFF |
321 | diamond | 1916 | cmp byte [esp+24+28+28], 0 |
1917 | jnz .writedir |
||
83 | diamond | 1918 | push ecx |
1919 | rep movsb |
||
1920 | pop ecx |
||
321 | diamond | 1921 | .writedircont: |
83 | diamond | 1922 | push ecx |
1923 | sub ecx, 512 |
||
1924 | neg ecx |
||
1925 | push eax |
||
1926 | xor eax, eax |
||
1927 | rep stosb |
||
1928 | pop eax |
||
1929 | add eax, 31 |
||
1930 | pusha |
||
1931 | call save_chs_sector |
||
1932 | popa |
||
1933 | pop ecx |
||
1934 | cmp [FDC_Status], 0 |
||
1935 | jnz .diskerr |
||
1936 | sub [esp+20], ecx |
||
1937 | pop edi ecx |
||
1938 | jnz .write_loop |
||
1939 | .done: |
||
1940 | xor eax, eax |
||
1941 | .ret: |
||
1942 | pop ebx edi edi ecx |
||
1943 | mov [esp+28+28], eax |
||
1944 | lea eax, [esp+8] |
||
1945 | call dword [eax+4] |
||
1946 | mov [edi+26], bx |
||
1947 | mov ebx, esi |
||
1948 | sub ebx, edx |
||
1949 | mov [edi+28], ebx |
||
1950 | call dword [eax+12] |
||
1951 | mov [esp+28+16], ebx |
||
1952 | test ebp, ebp |
||
1953 | jnz @f |
||
1954 | call save_flp_root |
||
1955 | @@: |
||
1956 | add esp, 28 |
||
1957 | cmp [FDC_Status], 0 |
||
1958 | jnz .err3 |
||
1959 | call save_flp_fat |
||
1960 | cmp [FDC_Status], 0 |
||
1961 | jnz .err3 |
||
1962 | popa |
||
1963 | ret |
||
1964 | .err3: |
||
1965 | popa |
||
1966 | mov al, 11 |
||
1967 | xor ebx, ebx |
||
1968 | ret |
||
1969 | .diskerr: |
||
1970 | sub esi, ecx |
||
1971 | mov eax, 11 |
||
1972 | pop edi ecx |
||
1973 | jmp .ret |
||
321 | diamond | 1974 | .writedir: |
1975 | push ecx |
||
1976 | mov ecx, 32/4 |
||
1977 | push ecx esi |
||
1978 | rep movsd |
||
1979 | pop esi ecx |
||
1980 | mov dword [edi-32], '. ' |
||
1981 | mov dword [edi-32+4], ' ' |
||
1982 | mov dword [edi-32+8], ' ' |
||
1983 | mov byte [edi-32+11], 10h |
||
1984 | mov word [edi-32+26], ax |
||
1985 | push esi |
||
1986 | rep movsd |
||
1987 | pop esi |
||
1988 | mov dword [edi-32], '.. ' |
||
1989 | mov dword [edi-32+4], ' ' |
||
1990 | mov dword [edi-32+8], ' ' |
||
1991 | mov byte [edi-32+11], 10h |
||
1992 | mov ecx, [esp+28+8] |
||
1993 | mov word [edi-32+26], cx |
||
1994 | pop ecx |
||
1995 | jmp .writedircont |
||
83 | diamond | 1996 | |
131 | diamond | 1997 | ;---------------------------------------------------------------- |
1998 | ; |
||
1999 | ; fs_FloppyWrite - LFN variant for writing to floppy |
||
2000 | ; |
||
2001 | ; esi points to filename |
||
2002 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
||
2003 | ; may be ebx=0 - start from first byte |
||
2004 | ; ecx number of bytes to write, 0+ |
||
2005 | ; edx mem location to data |
||
2006 | ; |
||
2007 | ; ret ebx = bytes written (maybe 0) |
||
2008 | ; eax = 0 ok write or other = errormsg |
||
2009 | ; |
||
2010 | ;-------------------------------------------------------------- |
||
2011 | |||
2012 | @@: |
||
2013 | push ERROR_ACCESS_DENIED |
||
2014 | fs_FloppyWrite.ret0: |
||
2015 | pop eax |
||
2016 | xor ebx, ebx |
||
2017 | ret |
||
2018 | |||
2019 | fs_FloppyWrite.ret11: |
||
2020 | push 11 |
||
2021 | jmp fs_FloppyWrite.ret0 |
||
2022 | |||
2023 | fs_FloppyWrite: |
||
2024 | cmp byte [esi], 0 |
||
2025 | jz @b |
||
2026 | call read_flp_fat |
||
2027 | cmp [FDC_Status], 0 |
||
2028 | jnz .ret11 |
||
2029 | pushad |
||
2030 | call fd_find_lfn |
||
2031 | jnc .found |
||
2032 | popad |
||
2033 | push ERROR_FILE_NOT_FOUND |
||
2034 | jmp .ret0 |
||
2035 | .found: |
||
2036 | ; FAT does not support files larger than 4GB |
||
2037 | test ebx, ebx |
||
2038 | jz .l1 |
||
2039 | cmp dword [ebx+4], 0 |
||
2040 | jz @f |
||
2041 | .eof: |
||
2042 | popad |
||
2043 | push ERROR_END_OF_FILE |
||
2044 | jmp .ret0 |
||
2045 | @@: |
||
2046 | mov ebx, [ebx] |
||
2047 | .l1: |
||
2048 | ; now edi points to direntry, ebx=start byte to write, |
||
2049 | ; ecx=number of bytes to write, edx=data pointer |
||
2050 | |||
2051 | ; extend file if needed |
||
2052 | add ecx, ebx |
||
2053 | jc .eof ; FAT does not support files larger than 4GB |
||
2054 | push eax ; save directory cluster |
||
2055 | push 0 ; return value=0 |
||
2056 | |||
2057 | call get_time_for_file |
||
2058 | mov [edi+22], ax ; last write time |
||
2059 | call get_date_for_file |
||
2060 | mov [edi+24], ax ; last write date |
||
2061 | mov [edi+18], ax ; last access date |
||
2062 | |||
2063 | push dword [edi+28] ; save current file size |
||
2064 | cmp ecx, [edi+28] |
||
2065 | jbe .length_ok |
||
2066 | cmp ecx, ebx |
||
2067 | jz .length_ok |
||
2068 | call floppy_extend_file |
||
2069 | jnc .length_ok |
||
2070 | mov [esp+4], eax |
||
2071 | ; floppy_extend_file can return two error codes: FAT table error or disk full. |
||
2072 | ; First case is fatal error, in second case we may write some data |
||
2073 | cmp al, ERROR_DISK_FULL |
||
2074 | jz .disk_full |
||
2075 | pop eax |
||
2076 | pop eax |
||
2077 | mov [esp+4+28], eax |
||
2078 | pop eax |
||
2079 | popad |
||
2080 | xor ebx, ebx |
||
2081 | ret |
||
2082 | .disk_full: |
||
2083 | ; correct number of bytes to write |
||
2084 | mov ecx, [edi+28] |
||
2085 | cmp ecx, ebx |
||
2086 | ja .length_ok |
||
2087 | .ret: |
||
2088 | pop eax |
||
2089 | pop eax |
||
2090 | mov [esp+4+28], eax ; eax=return value |
||
2091 | pop eax |
||
2092 | sub edx, [esp+20] |
||
2093 | mov [esp+16], edx ; ebx=number of written bytes |
||
2094 | popad |
||
2095 | ret |
||
2096 | .length_ok: |
||
2097 | ; save FAT & directory |
||
2098 | ; note that directory must be saved first because save_flp_fat uses buffer at 0xD000 |
||
2099 | mov esi, [edi+28] |
||
2100 | movzx edi, word [edi+26] ; starting cluster |
||
2101 | mov eax, [esp+8] |
||
2102 | pusha |
||
2103 | call save_chs_sector |
||
2104 | popa |
||
2105 | cmp [FDC_Status], 0 |
||
2106 | jnz .device_err |
||
2107 | call save_flp_fat |
||
2108 | cmp [FDC_Status], 0 |
||
2109 | jz @f |
||
2110 | .device_err: |
||
2111 | mov byte [esp+4], 11 |
||
2112 | jmp .ret |
||
2113 | @@: |
||
2114 | |||
2115 | ; now ebx=start pos, ecx=end pos, both lie inside file |
||
2116 | sub ecx, ebx |
||
2117 | jz .ret |
||
2118 | call SetUserInterrupts |
||
2119 | .write_loop: |
||
321 | diamond | 2120 | ; skip unmodified sectors |
2121 | cmp dword [esp], 0x200 |
||
2122 | jb .modify |
||
2123 | sub ebx, 0x200 |
||
2124 | jae .skip |
||
2125 | add ebx, 0x200 |
||
2126 | .modify: |
||
131 | diamond | 2127 | lea eax, [edi+31] ; current sector |
2128 | ; get length of data in current sector |
||
2129 | push ecx |
||
2130 | sub ebx, 0x200 |
||
2131 | jb .hasdata |
||
2132 | neg ebx |
||
2133 | xor ecx, ecx |
||
2134 | jmp @f |
||
2135 | .hasdata: |
||
2136 | neg ebx |
||
2137 | cmp ecx, ebx |
||
2138 | jbe @f |
||
2139 | mov ecx, ebx |
||
2140 | @@: |
||
2141 | ; load sector if needed |
||
2142 | cmp dword [esp+4], 0 ; we don't need to read uninitialized data |
||
2143 | jz .noread |
||
2144 | cmp ecx, 0x200 ; we don't need to read sector if it is fully rewritten |
||
2145 | jz .noread |
||
2146 | cmp ecx, esi ; (same for the last sector) |
||
2147 | jz .noread |
||
2148 | pusha |
||
2149 | call read_chs_sector |
||
2150 | popa |
||
2151 | cmp [FDC_Status], 0 |
||
2152 | jz @f |
||
2153 | .device_err2: |
||
2154 | pop ecx |
||
2155 | jmp .device_err |
||
2156 | @@: |
||
2157 | .noread: |
||
2158 | ; zero uninitialized data if file was extended (because floppy_extend_file does not this) |
||
2159 | push eax ecx edi |
||
2160 | xor eax, eax |
||
2161 | mov ecx, 0x200 |
||
2162 | sub ecx, [esp+4+12] |
||
2163 | jbe @f |
||
380 | serge | 2164 | mov edi, FDD_BUFF |
131 | diamond | 2165 | add edi, [esp+4+12] |
2166 | rep stosb |
||
2167 | @@: |
||
2168 | ; zero uninitialized data in the last sector |
||
2169 | mov ecx, 0x200 |
||
2170 | sub ecx, esi |
||
2171 | jbe @f |
||
380 | serge | 2172 | mov edi, FDD_BUFF |
131 | diamond | 2173 | add edi, esi |
2174 | rep stosb |
||
2175 | @@: |
||
2176 | pop edi ecx eax |
||
2177 | ; copy new data |
||
2178 | push eax |
||
2179 | mov eax, edx |
||
2180 | neg ebx |
||
2181 | jecxz @f |
||
380 | serge | 2182 | add ebx, FDD_BUFF+0x200 |
131 | diamond | 2183 | call memmove |
2184 | xor ebx, ebx |
||
2185 | @@: |
||
2186 | pop eax |
||
2187 | ; save sector |
||
2188 | pusha |
||
2189 | call save_chs_sector |
||
2190 | popa |
||
2191 | cmp [FDC_Status], 0 |
||
2192 | jnz .device_err2 |
||
2193 | add edx, ecx |
||
2194 | sub [esp], ecx |
||
2195 | pop ecx |
||
2196 | jz .done |
||
321 | diamond | 2197 | .skip: |
131 | diamond | 2198 | .next_cluster: |
381 | serge | 2199 | movzx edi, word [edi*2+FLOPPY_FAT] |
131 | diamond | 2200 | sub esi, 0x200 |
2201 | jae @f |
||
2202 | xor esi, esi |
||
2203 | @@: |
||
2204 | sub dword [esp], 0x200 |
||
2205 | jae .write_loop |
||
2206 | and dword [esp], 0 |
||
2207 | jmp .write_loop |
||
2208 | .done: |
||
2209 | mov [fdc_irq_func], fdc_null |
||
2210 | jmp .ret |
||
2211 | |||
2212 | floppy_extend_file.zero_size: |
||
2213 | xor eax, eax |
||
2214 | jmp floppy_extend_file.start_extend |
||
2215 | |||
2216 | ; extends file on floppy to given size (new data area is undefined) |
||
2217 | ; in: edi->direntry, ecx=new size |
||
133 | diamond | 2218 | ; out: CF=0 => OK, eax=0 |
131 | diamond | 2219 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL) |
2220 | floppy_extend_file: |
||
2221 | push ecx |
||
2222 | ; find the last cluster of file |
||
2223 | movzx eax, word [edi+26] ; first cluster |
||
2224 | mov ecx, [edi+28] |
||
2225 | jecxz .zero_size |
||
2226 | @@: |
||
2227 | sub ecx, 0x200 |
||
2228 | jbe @f |
||
381 | serge | 2229 | mov eax, [eax*2+FLOPPY_FAT] |
131 | diamond | 2230 | and eax, 0xFFF |
2231 | jz .fat_err |
||
2232 | cmp eax, 0xFF8 |
||
2233 | jb @b |
||
2234 | .fat_err: |
||
2235 | pop ecx |
||
2236 | push ERROR_FAT_TABLE |
||
2237 | pop eax |
||
2238 | stc |
||
2239 | ret |
||
2240 | @@: |
||
2241 | push eax |
||
381 | serge | 2242 | mov eax, [eax*2+FLOPPY_FAT] |
131 | diamond | 2243 | and eax, 0xFFF |
2244 | cmp eax, 0xFF8 |
||
2245 | pop eax |
||
2246 | jb .fat_err |
||
2247 | ; set length to full number of sectors |
||
2248 | sub [edi+28], ecx |
||
2249 | .start_extend: |
||
2250 | pop ecx |
||
2251 | ; now do extend |
||
2252 | push edx esi |
||
381 | serge | 2253 | mov esi, FLOPPY_FAT+2*2 ; start scan from cluster 2 |
131 | diamond | 2254 | mov edx, 2847 ; number of clusters to scan |
2255 | .extend_loop: |
||
2256 | cmp [edi+28], ecx |
||
2257 | jae .extend_done |
||
2258 | ; add new sector |
||
2259 | push ecx |
||
2260 | push edi |
||
2261 | .scan: |
||
2262 | mov ecx, edx |
||
2263 | mov edi, esi |
||
2264 | jecxz .disk_full |
||
2265 | push eax |
||
2266 | xor eax, eax |
||
2267 | repnz scasw |
||
2268 | pop eax |
||
2269 | jnz .disk_full |
||
2270 | mov word [edi-2], 0xFFF |
||
2271 | mov esi, edi |
||
2272 | mov edx, ecx |
||
381 | serge | 2273 | sub edi, FLOPPY_FAT |
131 | diamond | 2274 | shr edi, 1 |
2275 | dec edi ; now edi=new cluster |
||
2276 | test eax, eax |
||
2277 | jz .first_cluster |
||
381 | serge | 2278 | mov [FLOPPY_FAT+eax*2], di |
131 | diamond | 2279 | jmp @f |
2280 | .first_cluster: |
||
2281 | pop eax ; eax->direntry |
||
2282 | push eax |
||
2283 | mov [eax+26], di |
||
2284 | @@: |
||
2285 | mov eax, edi ; eax=new cluster |
||
2286 | pop edi ; edi->direntry |
||
2287 | pop ecx ; ecx=required size |
||
2288 | add dword [edi+28], 0x200 |
||
2289 | jmp .extend_loop |
||
2290 | .extend_done: |
||
2291 | mov [edi+28], ecx |
||
2292 | pop esi edx |
||
133 | diamond | 2293 | xor eax, eax ; CF=0 |
131 | diamond | 2294 | ret |
2295 | .disk_full: |
||
2296 | pop edi ecx |
||
2297 | pop esi edx |
||
2298 | stc |
||
2299 | push ERROR_DISK_FULL |
||
2300 | pop eax |
||
2301 | ret |
||
2302 | |||
133 | diamond | 2303 | ;---------------------------------------------------------------- |
2304 | ; |
||
2305 | ; fs_FloppySetFileEnd - set end of file on floppy |
||
2306 | ; |
||
2307 | ; esi points to filename |
||
2308 | ; ebx points to 64-bit number = new file size |
||
2309 | ; ecx ignored (reserved) |
||
2310 | ; edx ignored (reserved) |
||
2311 | ; |
||
2312 | ; ret eax = 0 ok or other = errormsg |
||
2313 | ; |
||
2314 | ;-------------------------------------------------------------- |
||
2315 | fs_FloppySetFileEnd: |
||
2316 | call read_flp_fat |
||
2317 | cmp [FDC_Status], 0 |
||
2318 | jnz ret11 |
||
2319 | cmp byte [esi], 0 |
||
2320 | jnz @f |
||
2321 | .access_denied: |
||
2322 | push ERROR_ACCESS_DENIED |
||
2323 | jmp .ret |
||
2324 | @@: |
||
2325 | push edi |
||
2326 | call fd_find_lfn |
||
2327 | jnc @f |
||
2328 | pop edi |
||
2329 | push ERROR_FILE_NOT_FOUND |
||
2330 | .ret: |
||
2331 | pop eax |
||
2332 | jmp .doret |
||
2333 | @@: |
||
2334 | ; must not be directory |
||
2335 | test byte [edi+11], 10h |
||
2336 | jz @f |
||
2337 | pop edi |
||
2338 | jmp .access_denied |
||
2339 | @@: |
||
2340 | ; file size must not exceed 4 Gb |
||
2341 | cmp dword [ebx+4], 0 |
||
2342 | jz @f |
||
2343 | pop edi |
||
2344 | push ERROR_END_OF_FILE |
||
2345 | jmp .ret |
||
2346 | @@: |
||
2347 | push eax |
||
2348 | ; set file modification date/time to current |
||
2349 | call fat_update_datetime |
||
2350 | mov eax, [ebx] |
||
2351 | cmp eax, [edi+28] |
||
2352 | jb .truncate |
||
2353 | ja .expand |
||
2354 | pop eax |
||
2355 | pushad |
||
2356 | call save_chs_sector |
||
2357 | popad |
||
2358 | pop edi |
||
2359 | xor eax, eax |
||
2360 | cmp [FDC_Status], 0 |
||
2361 | jz @f |
||
2362 | mov al, 11 |
||
2363 | @@: |
||
2364 | .doret: |
||
2365 | mov [fdc_irq_func], fdc_null |
||
2366 | ret |
||
2367 | .expand: |
||
2368 | push ecx |
||
2369 | push dword [edi+28] ; save old size |
||
2370 | mov ecx, eax |
||
2371 | call floppy_extend_file |
||
2372 | push eax ; return code |
||
2373 | jnc .expand_ok |
||
2374 | cmp al, ERROR_DISK_FULL |
||
2375 | jz .disk_full |
||
2376 | pop eax ecx ecx edi edi |
||
2377 | jmp .doret |
||
2378 | .device_err: |
||
2379 | pop eax |
||
2380 | .device_err2: |
||
2381 | pop ecx ecx eax edi |
||
2382 | push 11 |
||
2383 | jmp .ret |
||
2384 | .disk_full: |
||
2385 | .expand_ok: |
||
2386 | ; save directory & FAT |
||
2387 | mov eax, [edi+28] |
||
2388 | xchg eax, [esp+12] |
||
2389 | movzx edi, word [edi+26] |
||
2390 | pusha |
||
2391 | call save_chs_sector |
||
2392 | popa |
||
2393 | cmp [FDC_Status], 0 |
||
2394 | jnz .device_err |
||
2395 | call save_flp_fat |
||
2396 | cmp [FDC_Status], 0 |
||
2397 | jnz .device_err |
||
2398 | call SetUserInterrupts |
||
2399 | ; now zero new data |
||
2400 | ; edi = current cluster, [esp+12]=new size, [esp+4]=old size, [esp]=return code |
||
2401 | .zero_loop: |
||
2402 | sub dword [esp+4], 0x200 |
||
2403 | jae .next_cluster |
||
2404 | cmp dword [esp+4], -0x200 |
||
2405 | jz .noread |
||
2406 | lea eax, [edi+31] |
||
2407 | pusha |
||
2408 | call read_chs_sector |
||
2409 | popa |
||
2410 | cmp [FDC_Status], 0 |
||
2411 | jnz .err_next |
||
2412 | .noread: |
||
2413 | mov ecx, [esp+4] |
||
2414 | neg ecx |
||
2415 | push edi |
||
380 | serge | 2416 | mov edi, FDD_BUFF+0x200 |
133 | diamond | 2417 | add edi, [esp+8] |
2418 | xor eax, eax |
||
2419 | mov [esp+8], eax |
||
2420 | rep stosb |
||
2421 | pop edi |
||
2422 | lea eax, [edi+31] |
||
2423 | pusha |
||
2424 | call save_chs_sector |
||
2425 | popa |
||
2426 | cmp [FDC_Status], 0 |
||
2427 | jz .next_cluster |
||
2428 | .err_next: |
||
2429 | mov byte [esp], 11 |
||
2430 | .next_cluster: |
||
2431 | sub dword [esp+12], 0x200 |
||
2432 | jbe .expand_done |
||
381 | serge | 2433 | movzx edi, word [FLOPPY_FAT+edi*2] |
133 | diamond | 2434 | jmp .zero_loop |
2435 | .expand_done: |
||
2436 | pop eax ecx ecx edi edi |
||
2437 | jmp .doret |
||
2438 | .truncate: |
||
2439 | mov [edi+28], eax |
||
2440 | push ecx |
||
2441 | movzx ecx, word [edi+26] |
||
2442 | test eax, eax |
||
2443 | jz .zero_size |
||
2444 | ; find new last sector |
||
2445 | @@: |
||
2446 | sub eax, 0x200 |
||
2447 | jbe @f |
||
381 | serge | 2448 | movzx ecx, word [FLOPPY_FAT+ecx*2] |
133 | diamond | 2449 | jmp @b |
2450 | @@: |
||
2451 | ; we will zero data at the end of last sector - remember it |
||
2452 | push ecx |
||
2453 | ; terminate FAT chain |
||
381 | serge | 2454 | lea ecx, [FLOPPY_FAT+ecx+ecx] |
133 | diamond | 2455 | push dword [ecx] |
2456 | mov word [ecx], 0xFFF |
||
2457 | pop ecx |
||
2458 | and ecx, 0xFFF |
||
2459 | jmp .delete |
||
2460 | .zero_size: |
||
2461 | and word [edi+26], 0 |
||
2462 | push 0 |
||
2463 | .delete: |
||
2464 | ; delete FAT chain starting with ecx |
||
2465 | ; mark all clusters as free |
||
2466 | cmp ecx, 0xFF8 |
||
2467 | jae .deleted |
||
381 | serge | 2468 | lea ecx, [FLOPPY_FAT+ecx+ecx] |
133 | diamond | 2469 | push dword [ecx] |
2470 | and word [ecx], 0 |
||
2471 | pop ecx |
||
2472 | and ecx, 0xFFF |
||
2473 | jmp .delete |
||
2474 | .deleted: |
||
2475 | mov edi, [edi+28] |
||
2476 | ; save directory & FAT |
||
2477 | mov eax, [esp+8] |
||
2478 | pusha |
||
2479 | call save_chs_sector |
||
2480 | popa |
||
2481 | cmp [FDC_Status], 0 |
||
2482 | jnz .device_err2 |
||
2483 | call save_flp_fat |
||
2484 | cmp [FDC_Status], 0 |
||
2485 | jnz .device_err2 |
||
2486 | ; zero last sector, ignore errors |
||
2487 | pop eax |
||
2488 | add eax, 31 |
||
2489 | and edi, 0x1FF |
||
2490 | jz .truncate_done |
||
2491 | call SetUserInterrupts |
||
2492 | pusha |
||
2493 | call read_chs_sector |
||
2494 | popa |
||
380 | serge | 2495 | add edi, FDD_BUFF |
2496 | mov ecx, FDD_BUFF+0x200 |
||
133 | diamond | 2497 | sub ecx, edi |
2498 | push eax |
||
2499 | xor eax, eax |
||
2500 | rep stosb |
||
2501 | pop eax |
||
2502 | pusha |
||
2503 | call save_chs_sector |
||
2504 | popa |
||
2505 | .truncate_done: |
||
2506 | pop ecx eax edi |
||
2507 | xor eax, eax |
||
2508 | jmp .doret |
||
2509 | |||
86 | diamond | 2510 | fs_FloppyGetFileInfo: |
2511 | call read_flp_fat |
||
2512 | cmp [FDC_Status], 0 |
||
2513 | jnz ret11 |
||
2514 | cmp byte [esi], 0 |
||
2515 | jnz @f |
||
2516 | mov eax, 2 ; unsupported |
||
2517 | ret |
||
2518 | @@: |
||
2519 | push edi |
||
2520 | call fd_find_lfn |
||
2521 | jmp fs_GetFileInfo_finish |
||
2522 | |||
2523 | ret11: |
||
2524 | mov eax, 11 |
||
2525 | ret |
||
2526 | |||
2527 | fs_FloppySetFileInfo: |
||
2528 | call read_flp_fat |
||
2529 | cmp [FDC_Status], 0 |
||
2530 | jnz ret11 |
||
2531 | cmp byte [esi], 0 |
||
2532 | jnz @f |
||
2533 | mov eax, 2 ; unsupported |
||
2534 | ret |
||
2535 | @@: |
||
2536 | push edi |
||
2537 | call fd_find_lfn |
||
2538 | jnc @f |
||
2539 | pop edi |
||
2540 | mov eax, ERROR_FILE_NOT_FOUND |
||
2541 | ret |
||
2542 | @@: |
||
2543 | push eax |
||
2544 | call bdfe_to_fat_entry |
||
2545 | pop eax |
||
2546 | pusha |
||
2547 | call save_chs_sector |
||
2548 | popa |
||
2549 | pop edi |
||
2550 | xor eax, eax |
||
2551 | cmp [FDC_Status], 0 |
||
2552 | jz @f |
||
2553 | mov al, 11 |
||
2554 | @@: |
||
2555 | ret |
||
2556 | |||
321 | diamond | 2557 | if 0 |
91 | diamond | 2558 | ;---------------------------------------------------------------- |
2559 | ; |
||
2560 | ; fs_FloppyExecute - LFN variant for executing from floppy |
||
2561 | ; |
||
2562 | ; esi points to floppy filename (e.g. 'dir1/name') |
||
2563 | ; ebp points to full filename (e.g. '/fd/1/dir1/name') |
||
2564 | ; dword [ebx] = flags |
||
2565 | ; dword [ebx+4] = cmdline |
||
2566 | ; |
||
2567 | ; ret ebx,edx destroyed |
||
2568 | ; eax > 0 - PID, < 0 - error |
||
2569 | ; |
||
2570 | ;-------------------------------------------------------------- |
||
2571 | fs_FloppyExecute: |
||
2572 | mov edx, [ebx] |
||
2573 | mov ebx, [ebx+4] |
||
2574 | test ebx, ebx |
||
2575 | jz @f |
||
2576 | add ebx, std_application_base_address |
||
2577 | @@: |
||
2578 | |||
2579 | ;---------------------------------------------------------------- |
||
2580 | ; |
||
2581 | ; fs_FloppyExecute.flags - second entry |
||
2582 | ; |
||
2583 | ; esi points to floppy filename (kernel address) |
||
2584 | ; ebp points to full filename |
||
2585 | ; edx flags |
||
2586 | ; ebx cmdline (kernel address) |
||
2587 | ; |
||
2588 | ; ret eax > 0 - PID, < 0 - error |
||
2589 | ; |
||
2590 | ;-------------------------------------------------------------- |
||
2591 | |||
2592 | .flags: |
||
2593 | call read_flp_fat |
||
2594 | cmp byte [esi], 0 |
||
2595 | jnz @f |
||
2596 | ; cannot execute root! |
||
2597 | mov eax, -ERROR_ACCESS_DENIED |
||
2598 | ret |
||
2599 | @@: |
||
2600 | push edi |
||
2601 | call fd_find_lfn |
||
2602 | jnc .found |
||
2603 | pop edi |
||
2604 | mov eax, -ERROR_FILE_NOT_FOUND |
||
2605 | ret |
||
2606 | .found: |
||
2607 | movzx eax, word [edi+26] ; cluster |
||
2608 | push eax |
||
2609 | push dword [edi+28] ; size |
||
2610 | push .DoRead |
||
2611 | call fs_execute |
||
2612 | add esp, 12 |
||
2613 | pop edi |
||
2614 | ret |
||
2615 | |||
2616 | .DoRead: |
||
2617 | ; read next block |
||
2618 | ; in: eax->parameters, edi->buffer |
||
2619 | ; out: eax = error code |
||
2620 | pushad |
||
2621 | cmp dword [eax], 0 ; file size |
||
2622 | jz .eof |
||
2623 | mov eax, [eax+4] ; cluster |
||
2624 | add eax, 31 |
||
2625 | call read_chs_sector |
||
2626 | cmp [FDC_Status], 0 |
||
2627 | jnz .err |
||
2628 | pop edi |
||
380 | serge | 2629 | mov esi, FDD_BUFF |
91 | diamond | 2630 | push edi |
2631 | mov ecx, 512/4 |
||
2632 | rep movsd |
||
2633 | mov eax, [esp+28] |
||
2634 | mov ecx, [eax] |
||
2635 | sub ecx, 512 |
||
2636 | jae @f |
||
2637 | add edi, ecx |
||
2638 | neg ecx |
||
2639 | push eax |
||
2640 | xor eax, eax |
||
2641 | rep stosb |
||
2642 | pop eax |
||
2643 | @@: |
||
2644 | mov [eax], ecx |
||
2645 | mov edx, [eax+4] |
||
381 | serge | 2646 | mov dx, [edx*2+FLOPPY_FAT] |
91 | diamond | 2647 | mov [eax+4], dx ; high word is already zero |
2648 | popad |
||
2649 | xor eax, eax |
||
2650 | ret |
||
2651 | .eof: |
||
2652 | popad |
||
2653 | mov eax, 6 |
||
2654 | ret |
||
2655 | .err: |
||
2656 | popad |
||
2657 | mov eax, 11 |
||
2658 | ret |
||
321 | diamond | 2659 | end if |
91 | diamond | 2660 | |
171 | diamond | 2661 | ;---------------------------------------------------------------- |
2662 | ; |
||
2663 | ; fs_FloppyDelete - delete file or empty folder from floppy |
||
2664 | ; |
||
2665 | ; esi points to filename |
||
2666 | ; |
||
2667 | ; ret eax = 0 ok or other = errormsg |
||
2668 | ; |
||
2669 | ;-------------------------------------------------------------- |
||
2670 | fs_FloppyDelete: |
||
2671 | call read_flp_fat |
||
2672 | cmp [FDC_Status], 0 |
||
2673 | jz @f |
||
2674 | push 11 |
||
2675 | jmp .pop_ret |
||
2676 | @@: |
||
2677 | cmp byte [esi], 0 |
||
2678 | jnz @f |
||
2679 | ; cannot delete root! |
||
2680 | .access_denied: |
||
2681 | push ERROR_ACCESS_DENIED |
||
2682 | .pop_ret: |
||
2683 | pop eax |
||
2684 | ret |
||
2685 | @@: |
||
2686 | and [fd_prev_sector], 0 |
||
2687 | and [fd_prev_prev_sector], 0 |
||
2688 | push edi |
||
2689 | call fd_find_lfn |
||
2690 | jnc .found |
||
2691 | pop edi |
||
2692 | push ERROR_FILE_NOT_FOUND |
||
2693 | jmp .pop_ret |
||
2694 | .found: |
||
2695 | cmp dword [edi], '. ' |
||
2696 | jz .access_denied2 |
||
2697 | cmp dword [edi], '.. ' |
||
2698 | jz .access_denied2 |
||
2699 | test byte [edi+11], 10h |
||
2700 | jz .dodel |
||
2701 | ; we can delete only empty folders! |
||
2702 | push eax |
||
2703 | movzx eax, word [edi+26] |
||
2704 | push ebx |
||
2705 | pusha |
||
2706 | add eax, 31 |
||
2707 | call read_chs_sector |
||
2708 | popa |
||
380 | serge | 2709 | mov ebx, FDD_BUFF + 2*0x20 |
171 | diamond | 2710 | .checkempty: |
2711 | cmp byte [ebx], 0 |
||
2712 | jz .empty |
||
2713 | cmp byte [ebx], 0xE5 |
||
2714 | jnz .notempty |
||
2715 | add ebx, 0x20 |
||
380 | serge | 2716 | cmp ebx, FDD_BUFF + 0x200 |
171 | diamond | 2717 | jb .checkempty |
2718 | movzx eax, word [FLOPPY_FAT + eax*2] |
||
2719 | pusha |
||
2720 | add eax, 31 |
||
2721 | call read_chs_sector |
||
2722 | popa |
||
380 | serge | 2723 | mov ebx, FDD_BUFF |
171 | diamond | 2724 | jmp .checkempty |
2725 | .notempty: |
||
2726 | pop ebx |
||
2727 | pop eax |
||
2728 | .access_denied2: |
||
2729 | pop edi |
||
2730 | jmp .access_denied |
||
2731 | .empty: |
||
2732 | pop ebx |
||
2733 | pop eax |
||
2734 | pusha |
||
2735 | call read_chs_sector |
||
2736 | popa |
||
2737 | .dodel: |
||
2738 | push eax |
||
2739 | movzx eax, word [edi+26] |
||
2740 | xchg eax, [esp] |
||
2741 | ; delete folder entry |
||
2742 | mov byte [edi], 0xE5 |
||
2743 | ; delete LFN (if present) |
||
2744 | .lfndel: |
||
380 | serge | 2745 | cmp edi, FDD_BUFF |
171 | diamond | 2746 | ja @f |
2747 | cmp [fd_prev_sector], 0 |
||
2748 | jz .lfndone |
||
2749 | push [fd_prev_sector] |
||
2750 | push [fd_prev_prev_sector] |
||
2751 | pop [fd_prev_sector] |
||
2752 | and [fd_prev_prev_sector], 0 |
||
2753 | pusha |
||
2754 | call save_chs_sector |
||
2755 | popa |
||
2756 | pop eax |
||
2757 | pusha |
||
2758 | call read_chs_sector |
||
2759 | popa |
||
380 | serge | 2760 | mov edi, FDD_BUFF+0x200 |
171 | diamond | 2761 | @@: |
2762 | sub edi, 0x20 |
||
2763 | cmp byte [edi], 0xE5 |
||
2764 | jz .lfndone |
||
2765 | cmp byte [edi+11], 0xF |
||
2766 | jnz .lfndone |
||
2767 | mov byte [edi], 0xE5 |
||
2768 | jmp .lfndel |
||
2769 | .lfndone: |
||
2770 | pusha |
||
2771 | call save_chs_sector |
||
2772 | popa |
||
2773 | ; delete FAT chain |
||
2774 | pop eax |
||
2775 | test eax, eax |
||
2776 | jz .done |
||
2777 | @@: |
||
2778 | lea eax, [FLOPPY_FAT + eax*2] |
||
2779 | push dword [eax] |
||
2780 | and word [eax], 0 |
||
2781 | pop eax |
||
2782 | and eax, 0xFFF |
||
2783 | jnz @b |
||
2784 | .done: |
||
2785 | call save_flp_fat |
||
2786 | pop edi |
||
2787 | xor eax, eax |
||
2788 | ret |
||
2789 | |||
78 | diamond | 2790 | ; \end{diamond}>>=>=>->->->-> |