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Rev | Author | Line No. | Line |
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431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
593 | mikedld | 2 | ;; ;; |
2465 | Serge | 3 | ;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;; |
431 | serge | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
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593 | mikedld | 6 | ;; FAT12.INC ;; |
7 | ;; (C) 2005 Mario79, License: GPL ;; |
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8 | ;; ;; |
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431 | serge | 9 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ha | 10 | |
593 | mikedld | 11 | $Revision: 2987 $ |
12 | |||
13 | |||
1 | ha | 14 | n_sector dd 0 ; temporary save for sector value |
15 | flp_status dd 0 |
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16 | clust_tmp_flp dd 0 ; used by analyze_directory and analyze_directory_to_write |
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17 | path_pointer_flp dd 0 |
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18 | pointer_file_name_flp dd 0 |
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19 | save_root_flag db 0 |
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20 | save_flag db 0 |
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21 | root_read db 0 ; 0-necessary to load root, 1-not to load root |
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22 | flp_fat db 0 ; 0-necessary to load fat, 1-not to load fat |
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23 | flp_number db 0 ; 1- Floppy A, 2-Floppy B |
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24 | old_track db 0 ; old value track |
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25 | flp_label rb 15 ; Label and ID of inserted floppy disk |
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26 | |||
27 | reserve_flp: |
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28 | |||
2434 | Serge | 29 | cli |
30 | cmp [flp_status], 0 |
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31 | je reserve_flp_ok |
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1 | ha | 32 | |
2434 | Serge | 33 | sti |
34 | call change_task |
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35 | jmp reserve_flp |
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1 | ha | 36 | |
37 | reserve_flp_ok: |
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38 | |||
2434 | Serge | 39 | push eax |
40 | mov eax, [CURRENT_TASK] |
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41 | shl eax, 5 |
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42 | mov eax, [eax+CURRENT_TASK+TASKDATA.pid] |
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43 | mov [flp_status], eax |
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44 | pop eax |
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45 | sti |
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46 | ret |
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1 | ha | 47 | |
48 | |||
49 | floppy_fileread: |
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50 | ;---------------------------------------------------------------- |
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51 | ; |
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52 | ; fileread - sys floppy |
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53 | ; |
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54 | ; eax points to filename 11 chars - for root directory |
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55 | ; ebx first wanted block ; 1+ ; if 0 then set to 1 |
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56 | ; ecx number of blocks to read ; 1+ ; if 0 then set to 1 |
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57 | ; edx mem location to return data |
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58 | ; esi length of filename 12*X |
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59 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
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60 | ; |
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61 | ; ret ebx = size or 0xffffffff file not found |
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62 | ; eax = 0 ok read or other = errormsg |
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63 | ; 10 = access denied |
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64 | ;-------------------------------------------------------------- |
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65 | |||
2434 | Serge | 66 | mov [save_flag], 0 |
67 | mov [path_pointer_flp], edi |
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68 | test esi, esi ; return ramdisk root |
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69 | jnz fr_noroot_1 |
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70 | cmp ebx, 224/16 |
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71 | jbe fr_do_1 |
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72 | mov eax, 5 |
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73 | xor ebx, ebx |
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74 | mov [flp_status], ebx |
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75 | ret |
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1 | ha | 76 | |
77 | fr_do_1: |
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2434 | Serge | 78 | push ebx ecx edx |
79 | call read_flp_root |
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80 | pop edx ecx ebx |
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81 | cmp [FDC_Status], 0 |
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82 | jne fdc_status_error_1 |
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83 | mov edi, edx |
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84 | dec ebx |
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85 | shl ebx, 9 |
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86 | mov esi, FLOPPY_BUFF |
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87 | add esi, ebx |
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88 | shl ecx, 9 |
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89 | cld |
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90 | rep movsb |
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91 | xor eax, eax |
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92 | xor ebx, ebx |
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1229 | Lrz | 93 | ; mov eax,0 ; ok read |
94 | ; mov ebx,0 |
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2434 | Serge | 95 | mov [flp_status], eax |
96 | ret |
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1 | ha | 97 | fdc_status_error_1: |
2434 | Serge | 98 | xor eax, eax |
99 | mov [flp_status], eax |
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100 | mov eax, 10 |
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101 | or ebx, -1 |
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102 | ret |
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1 | ha | 103 | |
104 | fr_noroot_1: |
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2434 | Serge | 105 | sub esp, 32 |
106 | call expand_filename |
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1 | ha | 107 | frfloppy_1: |
2434 | Serge | 108 | test ebx, ebx |
109 | jnz frfl5_1 |
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110 | mov ebx, 1 |
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1 | ha | 111 | frfl5_1: |
2434 | Serge | 112 | test ecx, ecx |
113 | jnz frfl6_1 |
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114 | mov ecx, 1 |
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1 | ha | 115 | frfl6_1: |
2434 | Serge | 116 | dec ebx |
117 | push eax |
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118 | push eax ebx ecx edx esi edi |
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119 | call read_flp_fat |
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120 | cmp [FDC_Status], 0 |
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121 | jne fdc_status_error_3_1 |
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122 | mov [FDD_Track], 0; Цилиндр |
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123 | mov [FDD_Head], 1; Сторона |
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124 | mov [FDD_Sector], 2; Сектор |
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125 | call SeekTrack |
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126 | mov dh, 14 |
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1 | ha | 127 | l.20_1: |
2434 | Serge | 128 | call ReadSectWithRetr |
129 | cmp [FDC_Status], 0 |
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130 | jne fdc_status_error_3_1 |
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131 | mov dl, 16 |
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132 | mov edi, FDD_BUFF |
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133 | inc [FDD_Sector] |
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1 | ha | 134 | l.21_1: |
2434 | Serge | 135 | mov esi, eax ;Name of file we want |
136 | mov ecx, 11 |
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137 | cld |
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138 | rep cmpsb ;Found the file? |
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139 | je fifound_1 ;Yes |
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140 | add ecx, 21 |
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141 | add edi, ecx ;Advance to next entry |
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142 | dec dl |
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143 | test dl, dl |
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144 | jnz l.21_1 |
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145 | dec dh |
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146 | test dh, dh |
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147 | jnz l.20_1 |
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1 | ha | 148 | fdc_status_error_3: |
2434 | Serge | 149 | mov eax, 5 ; file not found ? |
150 | or ebx, -1 |
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151 | add esp, 32+28 |
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152 | mov [flp_status], 0 |
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153 | ret |
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1 | ha | 154 | fdc_status_error_3_2: |
2434 | Serge | 155 | cmp [FDC_Status], 0 |
156 | je fdc_status_error_3 |
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1 | ha | 157 | fdc_status_error_3_1: |
2434 | Serge | 158 | add esp, 32+28 |
159 | jmp fdc_status_error_1 |
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1 | ha | 160 | |
161 | fifound_1: |
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2434 | Serge | 162 | mov eax, [path_pointer_flp] |
163 | cmp [eax+36], byte 0 |
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164 | je fifound_2 |
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165 | add edi, 0xf |
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166 | mov eax, [edi] |
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167 | and eax, 65535 |
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168 | mov ebx, [path_pointer_flp] |
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169 | add ebx, 36 |
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170 | call get_cluster_of_a_path_flp |
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171 | jc fdc_status_error_3_2 |
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172 | mov ebx, [ebx-11+28] ;file size |
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173 | mov [esp+20], ebx |
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174 | mov [esp+24], ebx |
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175 | jmp fifound_3 |
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1 | ha | 176 | fifound_2: |
2434 | Serge | 177 | mov ebx, [edi-11+28] ;file size |
178 | mov [esp+20], ebx |
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179 | mov [esp+24], ebx |
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180 | add edi, 0xf |
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181 | mov eax, [edi] |
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1 | ha | 182 | fifound_3: |
2434 | Serge | 183 | and eax, 65535 |
184 | mov [n_sector], eax ;eax=cluster |
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1 | ha | 185 | frnew_1: |
2434 | Serge | 186 | add eax, 31 ;bootsector+2*fat+filenames |
187 | cmp [esp+16], dword 0; wanted cluster ? |
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188 | jne frfl7_1 |
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189 | call read_chs_sector |
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190 | cmp [FDC_Status], 0 |
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191 | jne fdc_status_error_5 |
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192 | mov edi, [esp+8] |
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193 | call give_back_application_data_1 |
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194 | add [esp+8], dword 512 |
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195 | dec dword [esp+12] ; last wanted cluster ? |
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196 | cmp [esp+12], dword 0 |
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197 | je frnoread_1 |
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198 | jmp frfl8_1 |
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1 | ha | 199 | frfl7_1: |
2434 | Serge | 200 | dec dword [esp+16] |
1 | ha | 201 | frfl8_1: |
2434 | Serge | 202 | mov edi, [n_sector] |
203 | shl edi, 1 ;find next cluster from FAT |
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204 | add edi, FLOPPY_FAT |
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205 | mov eax, [edi] |
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206 | and eax, 4095 |
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207 | mov edi, eax |
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208 | mov [n_sector], edi |
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209 | cmp edi, 4095 ;eof - cluster |
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210 | jz frnoread2_1 |
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211 | cmp [esp+24], dword 512;eof - size |
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212 | jb frnoread_1 |
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213 | sub [esp+24], dword 512 |
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214 | jmp frnew_1 |
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1 | ha | 215 | |
131 | diamond | 216 | read_chs_sector: |
2434 | Serge | 217 | call calculate_chs |
218 | call ReadSectWithRetr |
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219 | ret |
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1 | ha | 220 | |
221 | frnoread2_1: |
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2434 | Serge | 222 | cmp [esp+16], dword 0; eof without read ? |
223 | je frnoread_1 |
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224 | mov [fdc_irq_func], fdc_null |
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225 | pop edi esi edx ecx |
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226 | add esp, 4 |
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227 | pop ebx; ebx <- eax : size of file |
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228 | add esp, 36 |
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229 | mov eax, 6; end of file |
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230 | mov [flp_status], 0 |
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231 | ret |
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1 | ha | 232 | |
233 | frnoread_1: |
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2434 | Serge | 234 | pop edi esi edx ecx |
235 | add esp, 4 |
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236 | pop ebx; ebx <- eax : size of file |
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237 | add esp, 36 |
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238 | xor eax, eax |
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239 | mov [flp_status], eax |
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240 | ret |
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1 | ha | 241 | |
242 | fdc_status_error_5: |
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2434 | Serge | 243 | pop edi esi edx ecx |
244 | add esp, 4 |
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245 | pop ebx; ebx <- eax : size of file |
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246 | add esp, 36 |
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247 | jmp fdc_status_error_1 |
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1 | ha | 248 | |
249 | read_flp_root: |
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2434 | Serge | 250 | pusha |
251 | call check_label |
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252 | cmp [FDC_Status], 0 |
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253 | jne unnecessary_root_read |
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254 | cmp [root_read], 1 |
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255 | je unnecessary_root_read |
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256 | mov [FDD_Track], 0; Цилиндр |
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257 | mov [FDD_Head], 1; Сторона |
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258 | mov [FDD_Sector], 2; Сектор |
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259 | mov edi, FLOPPY_BUFF |
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260 | call SeekTrack |
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1 | ha | 261 | read_flp_root_1: |
2434 | Serge | 262 | call ReadSectWithRetr |
263 | cmp [FDC_Status], 0 |
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264 | jne unnecessary_root_read |
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265 | push edi |
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266 | call give_back_application_data_1 |
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267 | pop edi |
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268 | add edi, 512 |
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269 | inc [FDD_Sector] |
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270 | cmp [FDD_Sector], 16 |
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271 | jne read_flp_root_1 |
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272 | mov [root_read], 1 |
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1 | ha | 273 | unnecessary_root_read: |
2434 | Serge | 274 | popa |
275 | ret |
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1 | ha | 276 | |
277 | |||
278 | read_flp_fat: |
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2434 | Serge | 279 | pusha |
280 | call check_label |
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281 | cmp [FDC_Status], 0 |
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282 | jne unnecessary_flp_fat |
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283 | cmp [flp_fat], 1 |
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284 | je unnecessary_flp_fat |
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285 | mov [FDD_Track], 0; Цилиндр |
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286 | mov [FDD_Head], 0; Сторона |
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287 | mov [FDD_Sector], 2; Сектор |
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288 | mov edi, FLOPPY_BUFF |
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289 | call SeekTrack |
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1 | ha | 290 | read_flp_fat_1: |
2434 | Serge | 291 | call ReadSectWithRetr |
292 | cmp [FDC_Status], 0 |
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293 | jne unnecessary_flp_fat |
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294 | push edi |
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295 | call give_back_application_data_1 |
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296 | pop edi |
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297 | add edi, 512 |
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298 | inc [FDD_Sector] |
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299 | cmp [FDD_Sector], 19 |
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300 | jne read_flp_fat_1 |
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301 | mov [FDD_Sector], 1 |
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302 | mov [FDD_Head], 1 |
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303 | call ReadSectWithRetr |
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304 | cmp [FDC_Status], 0 |
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305 | jne unnecessary_flp_fat |
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306 | call give_back_application_data_1 |
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307 | call calculatefatchain_flp |
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308 | mov [root_read], 0 |
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309 | mov [flp_fat], 1 |
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1 | ha | 310 | unnecessary_flp_fat: |
2434 | Serge | 311 | popa |
312 | ret |
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1 | ha | 313 | |
314 | calculatefatchain_flp: |
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2434 | Serge | 315 | pushad |
1 | ha | 316 | |
2434 | Serge | 317 | mov esi, FLOPPY_BUFF |
318 | mov edi, FLOPPY_FAT |
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1 | ha | 319 | |
320 | fcnew_1: |
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2434 | Serge | 321 | mov eax, dword [esi] |
322 | mov ebx, dword [esi+4] |
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323 | mov ecx, dword [esi+8] |
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324 | mov edx, ecx |
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325 | shr edx, 4;8 ok |
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326 | shr dx, 4;7 ok |
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327 | xor ch, ch |
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328 | shld ecx, ebx, 20;6 ok |
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329 | shr cx, 4;5 ok |
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330 | shld ebx, eax, 12 |
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331 | and ebx, 0x0fffffff;4 ok |
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332 | shr bx, 4;3 ok |
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333 | shl eax, 4 |
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334 | and eax, 0x0fffffff;2 ok |
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335 | shr ax, 4;1 ok |
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336 | mov dword [edi], eax |
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337 | add edi, 4 |
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338 | mov dword [edi], ebx |
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339 | add edi, 4 |
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340 | mov dword [edi], ecx |
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341 | add edi, 4 |
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342 | mov dword [edi], edx |
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343 | add edi, 4 |
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344 | add esi, 12 |
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1 | ha | 345 | |
2434 | Serge | 346 | cmp edi, FLOPPY_FAT+2856*2;2849 clusters |
347 | jnz fcnew_1 |
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1 | ha | 348 | |
2434 | Serge | 349 | popad |
350 | ret |
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131 | diamond | 351 | |
1 | ha | 352 | check_label: |
2434 | Serge | 353 | pushad |
354 | mov [FDD_Track], 0; Цилиндр |
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355 | mov [FDD_Head], 0; Сторона |
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356 | mov [FDD_Sector], 1; Сектор |
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357 | call SetUserInterrupts |
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358 | call FDDMotorON |
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359 | call RecalibrateFDD |
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360 | cmp [FDC_Status], 0 |
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361 | jne fdc_status_error |
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362 | call SeekTrack |
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363 | cmp [FDC_Status], 0 |
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364 | jne fdc_status_error |
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365 | call ReadSectWithRetr |
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366 | cmp [FDC_Status], 0 |
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367 | jne fdc_status_error |
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368 | mov esi, flp_label |
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369 | mov edi, FDD_BUFF+39 |
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370 | mov ecx, 15 |
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371 | cld |
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372 | rep cmpsb |
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373 | je same_label |
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374 | mov [root_read], 0 |
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375 | mov [flp_fat], 0 |
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1 | ha | 376 | same_label: |
2434 | Serge | 377 | mov esi, FDD_BUFF+39 |
378 | mov edi, flp_label |
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379 | mov ecx, 15 |
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380 | cld |
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381 | rep movsb |
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382 | popad |
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383 | ret |
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1 | ha | 384 | fdc_status_error: |
2434 | Serge | 385 | popad |
386 | ret |
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1 | ha | 387 | |
388 | save_flp_root: |
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2434 | Serge | 389 | pusha |
390 | call check_label |
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391 | cmp [FDC_Status], 0 |
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392 | jne unnecessary_root_save |
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393 | cmp [root_read], 0 |
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394 | je unnecessary_root_save |
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395 | mov [FDD_Track], 0; Цилиндр |
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396 | mov [FDD_Head], 1; Сторона |
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397 | mov [FDD_Sector], 2; Сектор |
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398 | mov esi, FLOPPY_BUFF |
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399 | call SeekTrack |
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1 | ha | 400 | save_flp_root_1: |
2434 | Serge | 401 | push esi |
402 | call take_data_from_application_1 |
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403 | pop esi |
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404 | add esi, 512 |
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405 | call WriteSectWithRetr |
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406 | cmp [FDC_Status], 0 |
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407 | jne unnecessary_root_save |
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408 | inc [FDD_Sector] |
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409 | cmp [FDD_Sector], 16 |
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410 | jne save_flp_root_1 |
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1 | ha | 411 | unnecessary_root_save: |
2434 | Serge | 412 | mov [fdc_irq_func], fdc_null |
413 | popa |
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414 | ret |
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131 | diamond | 415 | |
1 | ha | 416 | save_flp_fat: |
2434 | Serge | 417 | pusha |
418 | call check_label |
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419 | cmp [FDC_Status], 0 |
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420 | jne unnecessary_flp_fat_save |
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421 | cmp [flp_fat], 0 |
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422 | je unnecessary_flp_fat_save |
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423 | call restorefatchain_flp |
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424 | mov [FDD_Track], 0; Цилиндр |
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425 | mov [FDD_Head], 0; Сторона |
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426 | mov [FDD_Sector], 2; Сектор |
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427 | mov esi, FLOPPY_BUFF |
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428 | call SeekTrack |
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1 | ha | 429 | save_flp_fat_1: |
2434 | Serge | 430 | push esi |
431 | call take_data_from_application_1 |
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432 | pop esi |
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433 | add esi, 512 |
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434 | call WriteSectWithRetr |
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435 | cmp [FDC_Status], 0 |
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436 | jne unnecessary_flp_fat_save |
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437 | inc [FDD_Sector] |
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438 | cmp [FDD_Sector], 19 |
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439 | jne save_flp_fat_1 |
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440 | mov [FDD_Sector], 1 |
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441 | mov [FDD_Head], 1 |
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442 | call take_data_from_application_1 |
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443 | call WriteSectWithRetr |
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444 | cmp [FDC_Status], 0 |
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445 | jne unnecessary_flp_fat_save |
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446 | mov [root_read], 0 |
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1 | ha | 447 | unnecessary_flp_fat_save: |
2434 | Serge | 448 | mov [fdc_irq_func], fdc_null |
449 | popa |
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450 | ret |
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1 | ha | 451 | |
131 | diamond | 452 | |
1 | ha | 453 | restorefatchain_flp: ; restore fat chain |
2434 | Serge | 454 | pushad |
1 | ha | 455 | |
2434 | Serge | 456 | mov esi, FLOPPY_FAT |
457 | mov edi, FLOPPY_BUFF |
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1 | ha | 458 | |
459 | fcnew2_1: |
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2434 | Serge | 460 | mov eax, dword [esi] |
461 | mov ebx, dword [esi+4] |
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462 | shl ax, 4 |
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463 | shl eax, 4 |
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464 | shl bx, 4 |
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465 | shr ebx, 4 |
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466 | shrd eax, ebx, 8 |
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467 | shr ebx, 8 |
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468 | mov dword [edi], eax |
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469 | add edi, 4 |
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470 | mov word [edi], bx |
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471 | add edi, 2 |
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472 | add esi, 8 |
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1 | ha | 473 | |
2434 | Serge | 474 | cmp edi, FLOPPY_BUFF+0x1200;4274 bytes - all used FAT |
475 | jb fcnew2_1 |
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1 | ha | 476 | |
2434 | Serge | 477 | mov esi, FLOPPY_BUFF ; duplicate fat chain |
478 | mov edi, FLOPPY_BUFF+0x1200 |
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479 | mov ecx, 0x1200/4 |
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480 | cld |
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481 | rep movsd |
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1 | ha | 482 | |
2434 | Serge | 483 | popad |
484 | ret |
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1 | ha | 485 | |
486 | |||
487 | save_chs_sector: |
||
2434 | Serge | 488 | call calculate_chs |
489 | call WriteSectWithRetr |
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490 | ret |
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131 | diamond | 491 | |
1 | ha | 492 | calculate_chs: |
2434 | Serge | 493 | mov bl, [FDD_Track] |
494 | mov [old_track], bl |
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495 | mov ebx, 18 |
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496 | xor edx, edx |
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497 | div ebx |
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498 | inc edx |
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499 | mov [FDD_Sector], dl |
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500 | xor edx, edx |
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501 | mov ebx, 2 |
||
502 | div ebx |
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503 | mov [FDD_Track], al |
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504 | mov [FDD_Head], 0 |
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505 | test edx, edx |
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506 | jz no_head_2 |
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507 | inc [FDD_Head] |
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1 | ha | 508 | no_head_2: |
2434 | Serge | 509 | mov dl, [old_track] |
510 | cmp dl, [FDD_Track] |
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511 | je no_seek_track_1 |
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512 | call SeekTrack |
||
1 | ha | 513 | no_seek_track_1: |
2434 | Serge | 514 | ret |
1 | ha | 515 | |
131 | diamond | 516 | |
1 | ha | 517 | get_cluster_of_a_path_flp: |
518 | ;--------------------------------------------------------- |
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519 | ; input : EBX = pointer to a path string |
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520 | ; (example: the path "/files/data/document" become |
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521 | ; "files......data.......document...0" |
||
522 | ; '.' = space char |
||
523 | ; '0' = char(0) (ASCII=0) !!! ) |
||
524 | ; output : if (CARRY=1) -> ERROR in the PATH |
||
525 | ; if (CARRY=0) -> EAX=cluster |
||
526 | ;--------------------------------------------------------- |
||
527 | |||
2434 | Serge | 528 | push edx |
529 | mov edx, ebx |
||
1 | ha | 530 | |
531 | search_end_of_path_flp: |
||
2434 | Serge | 532 | cmp [save_flag], 0 |
533 | jne search_end_of_path_flp_1 |
||
534 | cmp byte [edx], 0 |
||
535 | je found_end_of_path_flp |
||
536 | jmp search_end_of_path_flp_2 |
||
1 | ha | 537 | search_end_of_path_flp_1: |
2434 | Serge | 538 | cmp byte [edx+12], 0 |
539 | je found_end_of_path_flp |
||
1 | ha | 540 | search_end_of_path_flp_2: |
2434 | Serge | 541 | inc edx; '/' |
542 | call analyze_directory_flp |
||
543 | jc directory_not_found_flp |
||
1 | ha | 544 | |
2434 | Serge | 545 | mov eax, [ebx+20-2] ; read the HIGH 16bit cluster field |
546 | mov ax, [ebx+26] ; read the LOW 16bit cluster field |
||
547 | and eax, 0xfff ;[fatMASK] |
||
548 | add edx, 11 ; 8+3 (name+extension) |
||
549 | jmp search_end_of_path_flp |
||
1 | ha | 550 | |
551 | found_end_of_path_flp: |
||
2434 | Serge | 552 | inc edx |
553 | mov [pointer_file_name_flp], edx |
||
554 | pop edx |
||
555 | clc ; no errors |
||
556 | ret |
||
1 | ha | 557 | |
558 | directory_not_found_flp: |
||
2434 | Serge | 559 | pop edx |
560 | stc ; errors occour |
||
561 | ret |
||
131 | diamond | 562 | |
1 | ha | 563 | analyze_directory_flp: |
564 | ;-------------------------------- |
||
565 | ; input : EAX = first cluster of the directory |
||
566 | ; EBX = pointer to filename |
||
567 | ; output : IF CARRY=0 EAX = sector where th file is found |
||
568 | ; EBX = pointer in buffer |
||
569 | ; [buffer .. buffer+511] |
||
570 | ; ECX,EDX,EDI,EDI not changed |
||
571 | ; IF CARRY=1 |
||
572 | ;-------------------------------- |
||
2434 | Serge | 573 | push ebx;[esp+16] |
574 | push ecx |
||
575 | push edx |
||
576 | push esi |
||
577 | push edi |
||
131 | diamond | 578 | |
579 | |||
1 | ha | 580 | adr56_flp: |
2434 | Serge | 581 | mov [clust_tmp_flp], eax |
582 | add eax, 31 |
||
583 | pusha |
||
584 | call read_chs_sector |
||
585 | popa |
||
586 | cmp [FDC_Status], 0 |
||
587 | jne not_found_file_analyze_flp |
||
1 | ha | 588 | |
2434 | Serge | 589 | mov ecx, 512/32 |
590 | mov ebx, FDD_BUFF |
||
131 | diamond | 591 | |
1 | ha | 592 | adr1_analyze_flp: |
2434 | Serge | 593 | mov esi, edx;[esp+16] |
594 | mov edi, ebx |
||
595 | cld |
||
596 | push ecx |
||
597 | mov ecx, 11 |
||
598 | rep cmpsb |
||
599 | pop ecx |
||
600 | je found_file_analyze_flp |
||
131 | diamond | 601 | |
2434 | Serge | 602 | add ebx, 32 |
603 | loop adr1_analyze_flp |
||
131 | diamond | 604 | |
2434 | Serge | 605 | mov eax, [clust_tmp_flp] |
606 | shl eax, 1 ;find next cluster from FAT |
||
607 | add eax, FLOPPY_FAT |
||
608 | mov eax, [eax] |
||
609 | and eax, 4095 |
||
610 | cmp eax, 0x0ff8 |
||
611 | jb adr56_flp |
||
131 | diamond | 612 | not_found_file_analyze_flp: |
2434 | Serge | 613 | pop edi |
614 | pop esi |
||
615 | pop edx |
||
616 | pop ecx |
||
617 | add esp, 4 |
||
618 | stc ;file not found |
||
619 | ret |
||
131 | diamond | 620 | |
1 | ha | 621 | found_file_analyze_flp: |
2434 | Serge | 622 | pop edi |
623 | pop esi |
||
624 | pop edx |
||
625 | pop ecx |
||
626 | add esp, 4 |
||
627 | clc ;file found |
||
628 | ret |
||
131 | diamond | 629 | |
630 | |||
71 | diamond | 631 | ; \begin{diamond} |
83 | diamond | 632 | fat_find_lfn: |
71 | diamond | 633 | ; in: esi->name |
83 | diamond | 634 | ; [esp+4] = next |
635 | ; [esp+8] = first |
||
636 | ; [esp+C]... - possibly parameters for first and next |
||
2987 | Serge | 637 | ; out: CF=1 - file not found, eax=error code |
83 | diamond | 638 | ; else CF=0, esi->next name component, edi->direntry |
75 | diamond | 639 | pusha |
83 | diamond | 640 | lea eax, [esp+0Ch+20h] |
641 | call dword [eax-4] |
||
642 | jc .reterr |
||
75 | diamond | 643 | sub esp, 262*2 ; reserve place for LFN |
644 | push 0 ; for fat_get_name: read ASCII name |
||
83 | diamond | 645 | .l1: |
2987 | Serge | 646 | lea ebp, [esp+4] |
75 | diamond | 647 | call fat_get_name |
83 | diamond | 648 | jc .l2 |
75 | diamond | 649 | call fat_compare_name |
650 | jz .found |
||
83 | diamond | 651 | .l2: |
2987 | Serge | 652 | mov ebp, [esp+8+262*2+4] |
83 | diamond | 653 | lea eax, [esp+0Ch+20h+262*2+4] |
654 | call dword [eax-8] |
||
655 | jnc .l1 |
||
75 | diamond | 656 | add esp, 262*2+4 |
83 | diamond | 657 | .reterr: |
2987 | Serge | 658 | mov [esp+28], eax |
83 | diamond | 659 | stc |
75 | diamond | 660 | popa |
661 | ret |
||
71 | diamond | 662 | .found: |
83 | diamond | 663 | add esp, 262*2+4 |
2987 | Serge | 664 | mov ebp, [esp+8] |
83 | diamond | 665 | ; if this is LFN entry, advance to true entry |
75 | diamond | 666 | cmp byte [edi+11], 0xF |
83 | diamond | 667 | jnz @f |
668 | lea eax, [esp+0Ch+20h] |
||
669 | call dword [eax-8] |
||
670 | jc .reterr |
||
671 | @@: |
||
672 | add esp, 8 ; CF=0 |
||
673 | push esi |
||
674 | push edi |
||
675 | popa |
||
676 | ret |
||
677 | |||
171 | diamond | 678 | uglobal |
679 | ; this is for delete support |
||
680 | fd_prev_sector dd ? |
||
681 | fd_prev_prev_sector dd ? |
||
682 | endg |
||
683 | |||
83 | diamond | 684 | flp_root_next: |
465 | serge | 685 | cmp edi, OS_BASE+0xD200-0x20 |
83 | diamond | 686 | jae @f |
75 | diamond | 687 | add edi, 0x20 |
83 | diamond | 688 | ret ; CF=0 |
689 | @@: |
||
690 | ; read next sector |
||
691 | inc dword [eax] |
||
692 | cmp dword [eax], 14 |
||
693 | jae flp_root_first.readerr |
||
171 | diamond | 694 | push [fd_prev_sector] |
695 | pop [fd_prev_prev_sector] |
||
696 | push eax |
||
697 | mov eax, [eax] |
||
698 | add eax, 19-1 |
||
699 | mov [fd_prev_sector], eax |
||
700 | pop eax |
||
83 | diamond | 701 | flp_root_first: |
702 | mov eax, [eax] |
||
703 | pusha |
||
704 | add eax, 19 |
||
75 | diamond | 705 | call read_chs_sector |
83 | diamond | 706 | popa |
75 | diamond | 707 | cmp [FDC_Status], 0 |
83 | diamond | 708 | jnz .readerr |
380 | serge | 709 | mov edi, FDD_BUFF |
83 | diamond | 710 | ret ; CF=0 |
711 | .readerr: |
||
712 | stc |
||
713 | ret |
||
714 | |||
715 | flp_rootmem_first: |
||
380 | serge | 716 | mov edi, FLOPPY_BUFF |
83 | diamond | 717 | clc |
718 | ret |
||
719 | flp_rootmem_next: |
||
720 | add edi, 0x20 |
||
380 | serge | 721 | cmp edi, FLOPPY_BUFF+14*0x200 |
83 | diamond | 722 | cmc |
723 | flp_rootmem_next_write: |
||
724 | flp_rootmem_begin_write: |
||
725 | flp_rootmem_end_write: |
||
726 | ret |
||
727 | flp_rootmem_extend_dir: |
||
728 | stc |
||
729 | ret |
||
730 | |||
731 | flp_notroot_next: |
||
465 | serge | 732 | cmp edi, OS_BASE+0xD200-0x20 |
83 | diamond | 733 | jae flp_notroot_next_sector |
734 | add edi, 0x20 |
||
735 | ret ; CF=0 |
||
736 | flp_notroot_next_sector: |
||
737 | push ecx |
||
738 | mov ecx, [eax] |
||
171 | diamond | 739 | push [fd_prev_sector] |
740 | pop [fd_prev_prev_sector] |
||
741 | add ecx, 31 |
||
742 | mov [fd_prev_sector], ecx |
||
381 | serge | 743 | mov ecx, [(ecx-31)*2+FLOPPY_FAT] |
83 | diamond | 744 | and ecx, 0xFFF |
745 | cmp ecx, 2849 |
||
746 | jae flp_notroot_first.err2 |
||
747 | mov [eax], ecx |
||
748 | pop ecx |
||
749 | flp_notroot_first: |
||
750 | mov eax, [eax] |
||
751 | cmp eax, 2 |
||
752 | jb .err |
||
753 | cmp eax, 2849 |
||
754 | jae .err |
||
755 | pusha |
||
75 | diamond | 756 | add eax, 31 |
83 | diamond | 757 | call read_chs_sector |
758 | popa |
||
380 | serge | 759 | mov edi, FDD_BUFF |
83 | diamond | 760 | cmp [FDC_Status], 0 |
761 | jnz .err |
||
762 | ret ; CF=0 |
||
763 | .err2: |
||
764 | pop ecx |
||
765 | .err: |
||
766 | stc |
||
75 | diamond | 767 | ret |
83 | diamond | 768 | flp_notroot_begin_write: |
769 | pusha |
||
770 | mov eax, [eax] |
||
771 | add eax, 31 |
||
772 | call read_chs_sector |
||
773 | popa |
||
774 | ret |
||
775 | flp_notroot_end_write: |
||
776 | pusha |
||
777 | mov eax, [eax] |
||
778 | add eax, 31 |
||
779 | call save_chs_sector |
||
780 | popa |
||
781 | ret |
||
782 | flp_notroot_next_write: |
||
465 | serge | 783 | cmp edi, OS_BASE+0xD200 |
83 | diamond | 784 | jae @f |
785 | ret |
||
786 | @@: |
||
787 | call flp_notroot_end_write |
||
788 | jmp flp_notroot_next_sector |
||
789 | flp_notroot_extend_dir: |
||
790 | ; find free cluster in FAT |
||
791 | pusha |
||
792 | xor eax, eax |
||
381 | serge | 793 | mov edi, FLOPPY_FAT |
83 | diamond | 794 | mov ecx, 2849 |
2434 | Serge | 795 | repnz scasw |
83 | diamond | 796 | jnz .notfound |
797 | mov word [edi-2], 0xFFF ; mark as last cluster |
||
381 | serge | 798 | sub edi, FLOPPY_FAT |
83 | diamond | 799 | shr edi, 1 |
800 | dec edi |
||
801 | mov eax, [esp+28] |
||
802 | mov ecx, [eax] |
||
381 | serge | 803 | mov [FLOPPY_FAT+ecx*2], di |
83 | diamond | 804 | mov [eax], edi |
805 | xor eax, eax |
||
380 | serge | 806 | mov edi, FDD_BUFF |
83 | diamond | 807 | mov ecx, 128 |
2434 | Serge | 808 | rep stosd |
83 | diamond | 809 | popa |
810 | call flp_notroot_end_write |
||
380 | serge | 811 | mov edi, FDD_BUFF |
83 | diamond | 812 | clc |
813 | ret |
||
814 | .notfound: |
||
815 | popa |
||
816 | stc |
||
817 | ret |
||
71 | diamond | 818 | |
83 | diamond | 819 | fd_find_lfn: |
521 | diamond | 820 | ; in: esi+ebp -> name |
83 | diamond | 821 | ; out: CF=1 - file not found |
86 | diamond | 822 | ; else CF=0 and edi->direntry, eax=directory cluster (0 for root) |
83 | diamond | 823 | push esi edi |
824 | push 0 |
||
825 | push flp_root_first |
||
826 | push flp_root_next |
||
827 | .loop: |
||
828 | call fat_find_lfn |
||
829 | jc .notfound |
||
830 | cmp byte [esi], 0 |
||
831 | jz .found |
||
521 | diamond | 832 | .continue: |
83 | diamond | 833 | test byte [edi+11], 10h |
834 | jz .notfound |
||
835 | movzx eax, word [edi+26] ; cluster |
||
836 | mov [esp+8], eax |
||
837 | mov dword [esp+4], flp_notroot_first |
||
838 | mov dword [esp], flp_notroot_next |
||
839 | jmp .loop |
||
840 | .notfound: |
||
841 | add esp, 12 |
||
842 | pop edi esi |
||
843 | stc |
||
844 | ret |
||
845 | .found: |
||
521 | diamond | 846 | test ebp, ebp |
847 | jz @f |
||
848 | mov esi, ebp |
||
849 | xor ebp, ebp |
||
850 | jmp .continue |
||
851 | @@: |
||
86 | diamond | 852 | mov eax, [esp+8] |
131 | diamond | 853 | add eax, 31 |
854 | cmp dword [esp], flp_root_next |
||
855 | jnz @f |
||
856 | add eax, -31+19 |
||
857 | @@: |
||
83 | diamond | 858 | add esp, 16 ; CF=0 |
859 | pop esi |
||
860 | ret |
||
861 | |||
71 | diamond | 862 | ;---------------------------------------------------------------- |
863 | ; |
||
864 | ; fs_FloppyRead - LFN variant for reading floppy |
||
865 | ; |
||
866 | ; esi points to filename |
||
867 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
||
868 | ; may be ebx=0 - start from first byte |
||
869 | ; ecx number of bytes to read, 0+ |
||
870 | ; edx mem location to return data |
||
871 | ; |
||
77 | diamond | 872 | ; ret ebx = bytes read or 0xffffffff file not found |
71 | diamond | 873 | ; eax = 0 ok read or other = errormsg |
874 | ; |
||
875 | ;-------------------------------------------------------------- |
||
876 | fs_FloppyRead: |
||
75 | diamond | 877 | call read_flp_fat |
878 | cmp byte [esi], 0 |
||
879 | jnz @f |
||
880 | or ebx, -1 |
||
881 | mov eax, 10 ; access denied |
||
882 | ret |
||
71 | diamond | 883 | @@: |
75 | diamond | 884 | push edi |
885 | call fd_find_lfn |
||
886 | jnc .found |
||
887 | pop edi |
||
888 | or ebx, -1 |
||
889 | mov eax, 5 ; file not found |
||
890 | ret |
||
71 | diamond | 891 | .found: |
75 | diamond | 892 | test ebx, ebx |
893 | jz .l1 |
||
894 | cmp dword [ebx+4], 0 |
||
895 | jz @f |
||
77 | diamond | 896 | xor ebx, ebx |
71 | diamond | 897 | .reteof: |
75 | diamond | 898 | mov eax, 6 ; EOF |
899 | pop edi |
||
900 | ret |
||
71 | diamond | 901 | @@: |
75 | diamond | 902 | mov ebx, [ebx] |
71 | diamond | 903 | .l1: |
77 | diamond | 904 | push ecx edx |
905 | push 0 |
||
906 | mov eax, [edi+28] |
||
907 | sub eax, ebx |
||
908 | jb .eof |
||
909 | cmp eax, ecx |
||
910 | jae @f |
||
911 | mov ecx, eax |
||
912 | mov byte [esp], 6 ; EOF |
||
913 | @@: |
||
75 | diamond | 914 | movzx edi, word [edi+26] |
71 | diamond | 915 | .new: |
75 | diamond | 916 | jecxz .done |
917 | test edi, edi |
||
918 | jz .eof |
||
919 | cmp edi, 0xFF8 |
||
920 | jae .eof |
||
113 | diamond | 921 | sub ebx, 512 |
922 | jae .skip |
||
77 | diamond | 923 | lea eax, [edi+31] |
75 | diamond | 924 | pusha |
925 | call read_chs_sector |
||
926 | popa |
||
927 | cmp [FDC_Status], 0 |
||
928 | jnz .err |
||
380 | serge | 929 | lea eax, [FDD_BUFF+ebx+512] |
75 | diamond | 930 | neg ebx |
931 | push ecx |
||
932 | cmp ecx, ebx |
||
933 | jbe @f |
||
934 | mov ecx, ebx |
||
71 | diamond | 935 | @@: |
75 | diamond | 936 | mov ebx, edx |
937 | call memmove |
||
938 | add edx, ecx |
||
939 | sub [esp], ecx |
||
940 | pop ecx |
||
941 | xor ebx, ebx |
||
71 | diamond | 942 | .skip: |
381 | serge | 943 | movzx edi, word [edi*2+FLOPPY_FAT] |
75 | diamond | 944 | jmp .new |
71 | diamond | 945 | .done: |
77 | diamond | 946 | mov ebx, edx |
947 | pop eax edx ecx edi |
||
948 | sub ebx, edx |
||
75 | diamond | 949 | ret |
71 | diamond | 950 | .eof: |
77 | diamond | 951 | mov ebx, edx |
952 | pop eax edx ecx |
||
75 | diamond | 953 | jmp .reteof |
71 | diamond | 954 | .err: |
77 | diamond | 955 | mov ebx, edx |
956 | pop eax edx ecx edi |
||
957 | sub ebx, edx |
||
83 | diamond | 958 | mov al, 11 |
75 | diamond | 959 | ret |
960 | |||
961 | ;---------------------------------------------------------------- |
||
962 | ; |
||
963 | ; fs_FloppyReadFolder - LFN variant for reading floppy folders |
||
964 | ; |
||
965 | ; esi points to filename |
||
78 | diamond | 966 | ; ebx pointer to structure: 32-bit number = first wanted block, 0+ |
967 | ; & flags (bitfields) |
||
968 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
||
75 | diamond | 969 | ; ecx number of blocks to read, 0+ |
970 | ; edx mem location to return data |
||
971 | ; |
||
77 | diamond | 972 | ; ret ebx = blocks read or 0xffffffff folder not found |
75 | diamond | 973 | ; eax = 0 ok read or other = errormsg |
974 | ; |
||
975 | ;-------------------------------------------------------------- |
||
976 | fs_FloppyReadFolder: |
||
977 | call read_flp_fat |
||
978 | push edi |
||
979 | cmp byte [esi], 0 |
||
980 | jz .root |
||
981 | call fd_find_lfn |
||
982 | jnc .found |
||
983 | pop edi |
||
984 | or ebx, -1 |
||
985 | mov eax, ERROR_FILE_NOT_FOUND |
||
986 | ret |
||
987 | .found: |
||
988 | test byte [edi+11], 0x10 ; do not allow read files |
||
989 | jnz .found_dir |
||
990 | pop edi |
||
991 | or ebx, -1 |
||
992 | mov eax, ERROR_ACCESS_DENIED |
||
993 | ret |
||
994 | .found_dir: |
||
995 | movzx eax, word [edi+26] |
||
996 | add eax, 31 |
||
997 | push 0 |
||
998 | jmp .doit |
||
999 | .root: |
||
1000 | mov eax, 19 |
||
1001 | push 14 |
||
1002 | .doit: |
||
1003 | push ecx ebp |
||
1004 | sub esp, 262*2 ; reserve space for LFN |
||
1005 | mov ebp, esp |
||
78 | diamond | 1006 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE names |
1007 | mov ebx, [ebx] |
||
75 | diamond | 1008 | ; init header |
1009 | push eax ecx |
||
1010 | mov edi, edx |
||
1011 | mov ecx, 32/4 |
||
1012 | xor eax, eax |
||
2434 | Serge | 1013 | rep stosd |
75 | diamond | 1014 | pop ecx eax |
1015 | mov byte [edx], 1 ; version |
||
1016 | mov esi, edi ; esi points to BDFE |
||
1017 | .main_loop: |
||
1018 | pusha |
||
1019 | call read_chs_sector |
||
1020 | popa |
||
1021 | cmp [FDC_Status], 0 |
||
1022 | jnz .error |
||
380 | serge | 1023 | mov edi, FDD_BUFF |
75 | diamond | 1024 | push eax |
1025 | .l1: |
||
1026 | call fat_get_name |
||
1027 | jc .l2 |
||
1028 | cmp byte [edi+11], 0xF |
||
1029 | jnz .do_bdfe |
||
1030 | add edi, 0x20 |
||
465 | serge | 1031 | cmp edi, OS_BASE+0xD200 |
75 | diamond | 1032 | jb .do_bdfe |
1033 | pop eax |
||
1034 | inc eax |
||
1035 | dec byte [esp+262*2+12] |
||
1036 | jz .done |
||
1037 | jns @f |
||
1038 | ; read next sector from FAT |
||
381 | serge | 1039 | mov eax, [(eax-31-1)*2+FLOPPY_FAT] |
75 | diamond | 1040 | and eax, 0xFFF |
1041 | cmp eax, 0xFF8 |
||
1042 | jae .done |
||
1043 | add eax, 31 |
||
1044 | mov byte [esp+262*2+12], 0 |
||
1045 | @@: |
||
1046 | pusha |
||
1047 | call read_chs_sector |
||
1048 | popa |
||
1049 | cmp [FDC_Status], 0 |
||
1050 | jnz .error |
||
380 | serge | 1051 | mov edi, FDD_BUFF |
75 | diamond | 1052 | push eax |
1053 | .do_bdfe: |
||
1054 | inc dword [edx+8] ; new file found |
||
1055 | dec ebx |
||
1056 | jns .l2 |
||
1057 | dec ecx |
||
1058 | js .l2 |
||
1059 | inc dword [edx+4] ; new file block copied |
||
1060 | call fat_entry_to_bdfe |
||
1061 | .l2: |
||
1062 | add edi, 0x20 |
||
465 | serge | 1063 | cmp edi, OS_BASE+0xD200 |
75 | diamond | 1064 | jb .l1 |
1065 | pop eax |
||
1066 | inc eax |
||
1067 | dec byte [esp+262*2+12] |
||
1068 | jz .done |
||
1069 | jns @f |
||
1070 | ; read next sector from FAT |
||
381 | serge | 1071 | mov eax, [(eax-31-1)*2+FLOPPY_FAT] |
75 | diamond | 1072 | and eax, 0xFFF |
1073 | cmp eax, 0xFF8 |
||
1074 | jae .done |
||
1075 | add eax, 31 |
||
1076 | mov byte [esp+262*2+12], 0 |
||
1077 | @@: |
||
1078 | jmp .main_loop |
||
1079 | .error: |
||
1080 | add esp, 262*2+4 |
||
1081 | pop ebp ecx edi edi |
||
1082 | or ebx, -1 |
||
1083 | mov eax, ERROR_FILE_NOT_FOUND |
||
1084 | ret |
||
1085 | .done: |
||
1086 | add esp, 262*2+4 |
||
1087 | pop ebp |
||
77 | diamond | 1088 | mov ebx, [edx+4] |
75 | diamond | 1089 | xor eax, eax |
1090 | dec ecx |
||
1091 | js @f |
||
1092 | mov al, ERROR_END_OF_FILE |
||
1093 | @@: |
||
1094 | pop ecx edi edi |
||
1095 | ret |
||
1096 | |||
83 | diamond | 1097 | ;---------------------------------------------------------------- |
1098 | ; |
||
1099 | ; fs_FloppyRewrite - LFN variant for writing sys floppy |
||
1100 | ; |
||
1101 | ; esi points to filename |
||
1102 | ; ebx ignored (reserved) |
||
1103 | ; ecx number of bytes to write, 0+ |
||
1104 | ; edx mem location to data |
||
1105 | ; |
||
1106 | ; ret ebx = number of written bytes |
||
1107 | ; eax = 0 ok read or other = errormsg |
||
1108 | ; |
||
1109 | ;-------------------------------------------------------------- |
||
1110 | @@: |
||
1111 | mov eax, ERROR_ACCESS_DENIED |
||
1112 | xor ebx, ebx |
||
1113 | ret |
||
1114 | fsfrfe2: |
||
1115 | popad |
||
1116 | fsfrfe: |
||
1117 | mov eax, 11 |
||
1118 | xor ebx, ebx |
||
1119 | ret |
||
1120 | |||
321 | diamond | 1121 | fs_FloppyCreateFolder: |
1122 | mov al, 1 |
||
1123 | jmp fs_FloppyRewrite.common |
||
1124 | |||
83 | diamond | 1125 | fs_FloppyRewrite: |
321 | diamond | 1126 | xor eax, eax |
1127 | .common: |
||
83 | diamond | 1128 | cmp byte [esi], 0 |
1129 | jz @b |
||
1130 | call read_flp_fat |
||
1131 | cmp [FDC_Status], 0 |
||
1132 | jnz fsfrfe |
||
1133 | pushad |
||
521 | diamond | 1134 | xor edi, edi |
83 | diamond | 1135 | push esi |
521 | diamond | 1136 | test ebp, ebp |
1137 | jz @f |
||
1138 | mov esi, ebp |
||
83 | diamond | 1139 | @@: |
1140 | lodsb |
||
1141 | test al, al |
||
1142 | jz @f |
||
1143 | cmp al, '/' |
||
1144 | jnz @b |
||
521 | diamond | 1145 | lea edi, [esi-1] |
83 | diamond | 1146 | jmp @b |
1147 | @@: |
||
1148 | pop esi |
||
521 | diamond | 1149 | test edi, edi |
1150 | jnz .noroot |
||
83 | diamond | 1151 | test ebp, ebp |
521 | diamond | 1152 | jnz .hasebp |
83 | diamond | 1153 | call read_flp_root |
1154 | cmp [FDC_Status], 0 |
||
1155 | jnz fsfrfe2 |
||
1156 | push flp_rootmem_extend_dir |
||
1157 | push flp_rootmem_end_write |
||
1158 | push flp_rootmem_next_write |
||
1159 | push flp_rootmem_begin_write |
||
1160 | xor ebp, ebp |
||
1161 | push ebp |
||
1162 | push flp_rootmem_first |
||
1163 | push flp_rootmem_next |
||
1164 | jmp .common1 |
||
521 | diamond | 1165 | .hasebp: |
1166 | mov eax, ERROR_ACCESS_DENIED |
||
1167 | cmp byte [ebp], 0 |
||
1168 | jz .ret1 |
||
1169 | push ebp |
||
1170 | xor ebp, ebp |
||
1171 | call fd_find_lfn |
||
1172 | pop esi |
||
1173 | jc .notfound0 |
||
1174 | jmp .common0 |
||
83 | diamond | 1175 | .noroot: |
335 | diamond | 1176 | mov eax, ERROR_ACCESS_DENIED |
521 | diamond | 1177 | cmp byte [edi+1], 0 |
335 | diamond | 1178 | jz .ret1 |
83 | diamond | 1179 | ; check existence |
521 | diamond | 1180 | mov byte [edi], 0 |
1181 | push edi |
||
83 | diamond | 1182 | call fd_find_lfn |
521 | diamond | 1183 | pop esi |
1184 | mov byte [esi], '/' |
||
83 | diamond | 1185 | jnc @f |
521 | diamond | 1186 | .notfound0: |
83 | diamond | 1187 | mov eax, ERROR_FILE_NOT_FOUND |
1188 | .ret1: |
||
1189 | mov [esp+28], eax |
||
1190 | popad |
||
1191 | xor ebx, ebx |
||
1192 | ret |
||
1193 | @@: |
||
521 | diamond | 1194 | inc esi |
1195 | .common0: |
||
83 | diamond | 1196 | test byte [edi+11], 0x10 ; must be directory |
1197 | mov eax, ERROR_ACCESS_DENIED |
||
1198 | jz .ret1 |
||
1199 | movzx ebp, word [edi+26] ; ebp=cluster |
||
1200 | mov eax, ERROR_FAT_TABLE |
||
1201 | cmp ebp, 2 |
||
1202 | jb .ret1 |
||
1203 | cmp ebp, 2849 |
||
1204 | jae .ret1 |
||
1205 | push flp_notroot_extend_dir |
||
1206 | push flp_notroot_end_write |
||
1207 | push flp_notroot_next_write |
||
1208 | push flp_notroot_begin_write |
||
1209 | push ebp |
||
1210 | push flp_notroot_first |
||
1211 | push flp_notroot_next |
||
1212 | .common1: |
||
1213 | call fat_find_lfn |
||
1214 | jc .notfound |
||
321 | diamond | 1215 | ; found |
91 | diamond | 1216 | test byte [edi+11], 10h |
321 | diamond | 1217 | jz .exists_file |
1218 | ; found directory; if we are creating directory, return OK, |
||
1219 | ; if we are creating file, say "access denied" |
||
1220 | add esp, 28 |
||
1221 | popad |
||
1222 | test al, al |
||
1223 | mov eax, ERROR_ACCESS_DENIED |
||
91 | diamond | 1224 | jz @f |
321 | diamond | 1225 | mov al, 0 |
1226 | @@: |
||
1227 | xor ebx, ebx |
||
1228 | ret |
||
1229 | .exists_file: |
||
1230 | ; found file; if we are creating directory, return "access denied", |
||
1231 | ; if we are creating file, delete existing file and continue |
||
1232 | cmp byte [esp+28+28], 0 |
||
1233 | jz @f |
||
91 | diamond | 1234 | add esp, 28 |
1235 | popad |
||
1236 | mov eax, ERROR_ACCESS_DENIED |
||
1237 | xor ebx, ebx |
||
1238 | ret |
||
1239 | @@: |
||
1240 | ; delete FAT chain |
||
83 | diamond | 1241 | push edi |
1242 | xor eax, eax |
||
1243 | mov dword [edi+28], eax ; zero size |
||
1244 | xchg ax, word [edi+26] ; start cluster |
||
1245 | test eax, eax |
||
1246 | jz .done1 |
||
1247 | @@: |
||
1248 | cmp eax, 0xFF8 |
||
1249 | jae .done1 |
||
321 | diamond | 1250 | lea edi, [FLOPPY_FAT + eax*2] ; position in FAT |
83 | diamond | 1251 | xor eax, eax |
1252 | xchg ax, [edi] |
||
1253 | jmp @b |
||
1254 | .done1: |
||
1255 | pop edi |
||
1256 | call get_time_for_file |
||
1257 | mov [edi+22], ax |
||
1258 | call get_date_for_file |
||
1259 | mov [edi+24], ax |
||
1260 | mov [edi+18], ax |
||
1261 | or byte [edi+11], 20h ; set 'archive' attribute |
||
1262 | jmp .doit |
||
1263 | .notfound: |
||
1264 | ; file is not found; generate short name |
||
1265 | call fat_name_is_legal |
||
1266 | jc @f |
||
1267 | add esp, 28 |
||
1268 | popad |
||
1269 | mov eax, ERROR_FILE_NOT_FOUND |
||
1270 | xor ebx, ebx |
||
1271 | ret |
||
1272 | @@: |
||
1273 | sub esp, 12 |
||
1274 | mov edi, esp |
||
1275 | call fat_gen_short_name |
||
1276 | .test_short_name_loop: |
||
1277 | push esi edi ecx |
||
1278 | mov esi, edi |
||
1279 | lea eax, [esp+12+12+8] |
||
1280 | mov [eax], ebp |
||
1281 | call dword [eax-4] |
||
1282 | jc .found |
||
1283 | .test_short_name_entry: |
||
1284 | cmp byte [edi+11], 0xF |
||
1285 | jz .test_short_name_cont |
||
1286 | mov ecx, 11 |
||
1287 | push esi edi |
||
2434 | Serge | 1288 | repz cmpsb |
83 | diamond | 1289 | pop edi esi |
1290 | jz .short_name_found |
||
1291 | .test_short_name_cont: |
||
1292 | lea eax, [esp+12+12+8] |
||
1293 | call dword [eax-8] |
||
1294 | jnc .test_short_name_entry |
||
1295 | jmp .found |
||
1296 | .short_name_found: |
||
1297 | pop ecx edi esi |
||
1298 | call fat_next_short_name |
||
1299 | jnc .test_short_name_loop |
||
1300 | .disk_full: |
||
1301 | add esp, 12+28 |
||
1302 | popa |
||
1303 | mov eax, ERROR_DISK_FULL |
||
1304 | xor ebx, ebx |
||
1305 | ret |
||
1306 | .found: |
||
1307 | pop ecx edi esi |
||
1308 | ; now find space in directory |
||
1309 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
||
1310 | mov al, '~' |
||
1311 | push ecx edi |
||
1312 | mov ecx, 8 |
||
2434 | Serge | 1313 | repnz scasb |
83 | diamond | 1314 | push 1 |
1315 | pop eax ; 1 entry |
||
1316 | jnz .notilde |
||
1317 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
||
1318 | xor eax, eax |
||
1319 | @@: |
||
1320 | cmp byte [esi], 0 |
||
1321 | jz @f |
||
1322 | inc esi |
||
1323 | inc eax |
||
1324 | jmp @b |
||
1325 | @@: |
||
1326 | sub esi, eax |
||
1327 | add eax, 12+13 |
||
1328 | mov ecx, 13 |
||
1329 | push edx |
||
1330 | cdq |
||
1331 | div ecx |
||
1332 | pop edx |
||
1333 | .notilde: |
||
1334 | push -1 |
||
1335 | push -1 |
||
1336 | ; find |
||
1337 | xor ecx, ecx |
||
1338 | push eax |
||
1339 | lea eax, [esp+12+8+12+8] |
||
1340 | mov [eax], ebp |
||
1341 | call dword [eax-4] |
||
1342 | pop eax |
||
1343 | jnc .scan_dir |
||
1344 | .fsfrfe3: |
||
1345 | add esp, 8+8+12+28 |
||
1346 | popad |
||
1347 | mov eax, 11 |
||
1348 | xor ebx, ebx |
||
1349 | ret |
||
1350 | .scan_dir: |
||
1351 | cmp byte [edi], 0 |
||
1352 | jz .free |
||
1353 | cmp byte [edi], 0xE5 |
||
1354 | jz .free |
||
1355 | xor ecx, ecx |
||
1356 | .scan_cont: |
||
1357 | push eax |
||
1358 | lea eax, [esp+12+8+12+8] |
||
1359 | call dword [eax-8] |
||
1360 | pop eax |
||
1361 | jnc .scan_dir |
||
1362 | cmp [FDC_Status], 0 |
||
1363 | jnz .fsfrfe3 |
||
1364 | push eax |
||
1365 | lea eax, [esp+12+8+12+8] |
||
1366 | call dword [eax+16] ; extend directory |
||
1367 | pop eax |
||
1368 | jnc .scan_dir |
||
1369 | add esp, 8+8+12+28 |
||
1370 | popad |
||
1371 | mov eax, ERROR_DISK_FULL |
||
1372 | xor ebx, ebx |
||
1373 | ret |
||
1374 | .free: |
||
1375 | test ecx, ecx |
||
1376 | jnz @f |
||
1377 | mov [esp], edi |
||
1378 | mov ecx, [esp+8+8+12+8] |
||
1379 | mov [esp+4], ecx |
||
1380 | xor ecx, ecx |
||
1381 | @@: |
||
1382 | inc ecx |
||
1383 | cmp ecx, eax |
||
1384 | jb .scan_cont |
||
1385 | ; found! |
||
1386 | ; calculate name checksum |
||
1387 | push esi ecx |
||
1388 | mov esi, [esp+8+8] |
||
1389 | mov ecx, 11 |
||
1390 | xor eax, eax |
||
1391 | @@: |
||
1392 | ror al, 1 |
||
1393 | add al, [esi] |
||
1394 | inc esi |
||
1395 | loop @b |
||
1396 | pop ecx esi |
||
1397 | pop edi |
||
1398 | pop dword [esp+8+12+8] |
||
1399 | ; edi points to first entry in free chunk |
||
1400 | dec ecx |
||
1401 | jz .nolfn |
||
1402 | push esi |
||
1403 | push eax |
||
1404 | lea eax, [esp+8+8+12+8] |
||
1405 | call dword [eax+4] ; begin write |
||
1406 | mov al, 40h |
||
1407 | .writelfn: |
||
1408 | or al, cl |
||
1409 | mov esi, [esp+4] |
||
1410 | push ecx |
||
1411 | dec ecx |
||
1412 | imul ecx, 13 |
||
1413 | add esi, ecx |
||
1414 | stosb |
||
1415 | mov cl, 5 |
||
1416 | call fs_RamdiskRewrite.read_symbols |
||
1417 | mov ax, 0xF |
||
1418 | stosw |
||
1419 | mov al, [esp+4] |
||
1420 | stosb |
||
1421 | mov cl, 6 |
||
1422 | call fs_RamdiskRewrite.read_symbols |
||
1423 | xor eax, eax |
||
1424 | stosw |
||
1425 | mov cl, 2 |
||
1426 | call fs_RamdiskRewrite.read_symbols |
||
1427 | pop ecx |
||
1428 | lea eax, [esp+8+8+12+8] |
||
1429 | call dword [eax+8] ; next write |
||
1430 | xor eax, eax |
||
1431 | loop .writelfn |
||
1432 | pop eax |
||
1433 | pop esi |
||
1434 | ; lea eax, [esp+8+12+8] |
||
1435 | ; call dword [eax+12] ; end write |
||
1436 | .nolfn: |
||
1437 | xchg esi, [esp] |
||
1438 | mov ecx, 11 |
||
2434 | Serge | 1439 | rep movsb |
83 | diamond | 1440 | mov word [edi], 20h ; attributes |
1441 | sub edi, 11 |
||
1442 | pop esi ecx |
||
1443 | add esp, 12 |
||
1444 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
||
1445 | call get_time_for_file |
||
1446 | mov [edi+14], ax ; creation time |
||
1447 | mov [edi+22], ax ; last write time |
||
1448 | call get_date_for_file |
||
1449 | mov [edi+16], ax ; creation date |
||
1450 | mov [edi+24], ax ; last write date |
||
1451 | mov [edi+18], ax ; last access date |
||
1452 | and word [edi+20], 0 ; high word of cluster |
||
1453 | and word [edi+26], 0 ; low word of cluster - to be filled |
||
1454 | and dword [edi+28], 0 ; file size - to be filled |
||
321 | diamond | 1455 | cmp byte [esp+28+28], 0 |
1456 | jz .doit |
||
1457 | ; create directory |
||
1458 | mov byte [edi+11], 10h ; attributes: folder |
||
1459 | mov ecx, 32*2 |
||
1460 | mov edx, edi |
||
83 | diamond | 1461 | .doit: |
1462 | lea eax, [esp+8] |
||
1463 | call dword [eax+12] ; flush directory |
||
1464 | push ecx |
||
1465 | push edi |
||
133 | diamond | 1466 | push 0 |
83 | diamond | 1467 | mov esi, edx |
321 | diamond | 1468 | test ecx, ecx |
1469 | jz .done |
||
83 | diamond | 1470 | mov ecx, 2849 |
321 | diamond | 1471 | mov edi, FLOPPY_FAT |
83 | diamond | 1472 | push 0 ; first cluster |
1473 | .write_loop: |
||
1474 | ; allocate new cluster |
||
1475 | xor eax, eax |
||
2434 | Serge | 1476 | repnz scasw |
83 | diamond | 1477 | mov al, ERROR_DISK_FULL |
1478 | jnz .ret |
||
1479 | dec edi |
||
1480 | dec edi |
||
465 | serge | 1481 | |
2434 | Serge | 1482 | mov eax, edi |
1483 | sub eax, FLOPPY_FAT |
||
465 | serge | 1484 | |
83 | diamond | 1485 | shr eax, 1 ; eax = cluster |
1486 | mov word [edi], 0xFFF ; mark as last cluster |
||
133 | diamond | 1487 | xchg edi, [esp+4] |
83 | diamond | 1488 | cmp dword [esp], 0 |
1489 | jz .first |
||
1490 | stosw |
||
1491 | jmp @f |
||
1492 | .first: |
||
1493 | mov [esp], eax |
||
1494 | @@: |
||
133 | diamond | 1495 | mov edi, [esp+4] |
83 | diamond | 1496 | inc ecx |
1497 | ; write data |
||
1498 | push ecx edi |
||
1499 | mov ecx, 512 |
||
1500 | cmp dword [esp+20], ecx |
||
1501 | jae @f |
||
1502 | mov ecx, [esp+20] |
||
1503 | @@: |
||
380 | serge | 1504 | mov edi, FDD_BUFF |
321 | diamond | 1505 | cmp byte [esp+24+28+28], 0 |
1506 | jnz .writedir |
||
83 | diamond | 1507 | push ecx |
2434 | Serge | 1508 | rep movsb |
83 | diamond | 1509 | pop ecx |
321 | diamond | 1510 | .writedircont: |
83 | diamond | 1511 | push ecx |
1512 | sub ecx, 512 |
||
1513 | neg ecx |
||
1514 | push eax |
||
1515 | xor eax, eax |
||
2434 | Serge | 1516 | rep stosb |
83 | diamond | 1517 | pop eax |
1518 | add eax, 31 |
||
1519 | pusha |
||
1520 | call save_chs_sector |
||
1521 | popa |
||
1522 | pop ecx |
||
1523 | cmp [FDC_Status], 0 |
||
1524 | jnz .diskerr |
||
1525 | sub [esp+20], ecx |
||
1526 | pop edi ecx |
||
1527 | jnz .write_loop |
||
1528 | .done: |
||
1529 | xor eax, eax |
||
1530 | .ret: |
||
1531 | pop ebx edi edi ecx |
||
1532 | mov [esp+28+28], eax |
||
1533 | lea eax, [esp+8] |
||
1534 | call dword [eax+4] |
||
1535 | mov [edi+26], bx |
||
1536 | mov ebx, esi |
||
1537 | sub ebx, edx |
||
1538 | mov [edi+28], ebx |
||
1539 | call dword [eax+12] |
||
1540 | mov [esp+28+16], ebx |
||
1541 | test ebp, ebp |
||
1542 | jnz @f |
||
1543 | call save_flp_root |
||
1544 | @@: |
||
1545 | add esp, 28 |
||
1546 | cmp [FDC_Status], 0 |
||
1547 | jnz .err3 |
||
1548 | call save_flp_fat |
||
1549 | cmp [FDC_Status], 0 |
||
1550 | jnz .err3 |
||
1551 | popa |
||
1552 | ret |
||
1553 | .err3: |
||
1554 | popa |
||
1555 | mov al, 11 |
||
1556 | xor ebx, ebx |
||
1557 | ret |
||
1558 | .diskerr: |
||
1559 | sub esi, ecx |
||
1560 | mov eax, 11 |
||
1561 | pop edi ecx |
||
1562 | jmp .ret |
||
321 | diamond | 1563 | .writedir: |
1564 | push ecx |
||
1565 | mov ecx, 32/4 |
||
1566 | push ecx esi |
||
2434 | Serge | 1567 | rep movsd |
321 | diamond | 1568 | pop esi ecx |
1569 | mov dword [edi-32], '. ' |
||
1570 | mov dword [edi-32+4], ' ' |
||
1571 | mov dword [edi-32+8], ' ' |
||
1572 | mov byte [edi-32+11], 10h |
||
1573 | mov word [edi-32+26], ax |
||
1574 | push esi |
||
2434 | Serge | 1575 | rep movsd |
321 | diamond | 1576 | pop esi |
1577 | mov dword [edi-32], '.. ' |
||
1578 | mov dword [edi-32+4], ' ' |
||
1579 | mov dword [edi-32+8], ' ' |
||
1580 | mov byte [edi-32+11], 10h |
||
1581 | mov ecx, [esp+28+8] |
||
1582 | mov word [edi-32+26], cx |
||
1583 | pop ecx |
||
1584 | jmp .writedircont |
||
83 | diamond | 1585 | |
131 | diamond | 1586 | ;---------------------------------------------------------------- |
1587 | ; |
||
1588 | ; fs_FloppyWrite - LFN variant for writing to floppy |
||
1589 | ; |
||
1590 | ; esi points to filename |
||
1591 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
||
1592 | ; may be ebx=0 - start from first byte |
||
1593 | ; ecx number of bytes to write, 0+ |
||
1594 | ; edx mem location to data |
||
1595 | ; |
||
1596 | ; ret ebx = bytes written (maybe 0) |
||
1597 | ; eax = 0 ok write or other = errormsg |
||
1598 | ; |
||
1599 | ;-------------------------------------------------------------- |
||
1600 | |||
1601 | @@: |
||
1602 | push ERROR_ACCESS_DENIED |
||
1603 | fs_FloppyWrite.ret0: |
||
1604 | pop eax |
||
1605 | xor ebx, ebx |
||
1606 | ret |
||
1607 | |||
1608 | fs_FloppyWrite.ret11: |
||
1609 | push 11 |
||
1610 | jmp fs_FloppyWrite.ret0 |
||
1611 | |||
1612 | fs_FloppyWrite: |
||
1613 | cmp byte [esi], 0 |
||
1614 | jz @b |
||
1615 | call read_flp_fat |
||
1616 | cmp [FDC_Status], 0 |
||
1617 | jnz .ret11 |
||
1618 | pushad |
||
1619 | call fd_find_lfn |
||
1620 | jnc .found |
||
1621 | popad |
||
1622 | push ERROR_FILE_NOT_FOUND |
||
1623 | jmp .ret0 |
||
1624 | .found: |
||
1625 | ; FAT does not support files larger than 4GB |
||
1626 | test ebx, ebx |
||
1627 | jz .l1 |
||
1628 | cmp dword [ebx+4], 0 |
||
1629 | jz @f |
||
1630 | .eof: |
||
1631 | popad |
||
1632 | push ERROR_END_OF_FILE |
||
1633 | jmp .ret0 |
||
1634 | @@: |
||
1635 | mov ebx, [ebx] |
||
1636 | .l1: |
||
1637 | ; now edi points to direntry, ebx=start byte to write, |
||
1638 | ; ecx=number of bytes to write, edx=data pointer |
||
1639 | |||
1640 | ; extend file if needed |
||
1641 | add ecx, ebx |
||
1642 | jc .eof ; FAT does not support files larger than 4GB |
||
1643 | push eax ; save directory cluster |
||
1644 | push 0 ; return value=0 |
||
1645 | |||
1646 | call get_time_for_file |
||
1647 | mov [edi+22], ax ; last write time |
||
1648 | call get_date_for_file |
||
1649 | mov [edi+24], ax ; last write date |
||
1650 | mov [edi+18], ax ; last access date |
||
1651 | |||
1652 | push dword [edi+28] ; save current file size |
||
1653 | cmp ecx, [edi+28] |
||
1654 | jbe .length_ok |
||
1655 | cmp ecx, ebx |
||
1656 | jz .length_ok |
||
1657 | call floppy_extend_file |
||
1658 | jnc .length_ok |
||
1659 | mov [esp+4], eax |
||
1660 | ; floppy_extend_file can return two error codes: FAT table error or disk full. |
||
1661 | ; First case is fatal error, in second case we may write some data |
||
1662 | cmp al, ERROR_DISK_FULL |
||
1663 | jz .disk_full |
||
1664 | pop eax |
||
1665 | pop eax |
||
1666 | mov [esp+4+28], eax |
||
1667 | pop eax |
||
1668 | popad |
||
1669 | xor ebx, ebx |
||
1670 | ret |
||
1671 | .disk_full: |
||
1672 | ; correct number of bytes to write |
||
1673 | mov ecx, [edi+28] |
||
1674 | cmp ecx, ebx |
||
1675 | ja .length_ok |
||
1676 | .ret: |
||
1677 | pop eax |
||
1678 | pop eax |
||
1679 | mov [esp+4+28], eax ; eax=return value |
||
1680 | pop eax |
||
1681 | sub edx, [esp+20] |
||
1682 | mov [esp+16], edx ; ebx=number of written bytes |
||
1683 | popad |
||
1684 | ret |
||
1685 | .length_ok: |
||
1686 | ; save FAT & directory |
||
1687 | ; note that directory must be saved first because save_flp_fat uses buffer at 0xD000 |
||
1688 | mov esi, [edi+28] |
||
1689 | movzx edi, word [edi+26] ; starting cluster |
||
1690 | mov eax, [esp+8] |
||
1691 | pusha |
||
1692 | call save_chs_sector |
||
1693 | popa |
||
1694 | cmp [FDC_Status], 0 |
||
1695 | jnz .device_err |
||
1696 | call save_flp_fat |
||
1697 | cmp [FDC_Status], 0 |
||
1698 | jz @f |
||
1699 | .device_err: |
||
1700 | mov byte [esp+4], 11 |
||
1701 | jmp .ret |
||
1702 | @@: |
||
1703 | |||
1704 | ; now ebx=start pos, ecx=end pos, both lie inside file |
||
1705 | sub ecx, ebx |
||
1706 | jz .ret |
||
1707 | call SetUserInterrupts |
||
1708 | .write_loop: |
||
321 | diamond | 1709 | ; skip unmodified sectors |
1710 | cmp dword [esp], 0x200 |
||
1711 | jb .modify |
||
1712 | sub ebx, 0x200 |
||
1713 | jae .skip |
||
1714 | add ebx, 0x200 |
||
1715 | .modify: |
||
131 | diamond | 1716 | lea eax, [edi+31] ; current sector |
1717 | ; get length of data in current sector |
||
1718 | push ecx |
||
1719 | sub ebx, 0x200 |
||
1720 | jb .hasdata |
||
1721 | neg ebx |
||
1722 | xor ecx, ecx |
||
1723 | jmp @f |
||
1724 | .hasdata: |
||
1725 | neg ebx |
||
1726 | cmp ecx, ebx |
||
1727 | jbe @f |
||
1728 | mov ecx, ebx |
||
1729 | @@: |
||
1730 | ; load sector if needed |
||
1731 | cmp dword [esp+4], 0 ; we don't need to read uninitialized data |
||
1732 | jz .noread |
||
1733 | cmp ecx, 0x200 ; we don't need to read sector if it is fully rewritten |
||
1734 | jz .noread |
||
1735 | cmp ecx, esi ; (same for the last sector) |
||
1736 | jz .noread |
||
1737 | pusha |
||
1738 | call read_chs_sector |
||
1739 | popa |
||
1740 | cmp [FDC_Status], 0 |
||
1741 | jz @f |
||
1742 | .device_err2: |
||
1743 | pop ecx |
||
1744 | jmp .device_err |
||
1745 | @@: |
||
1746 | .noread: |
||
1747 | ; zero uninitialized data if file was extended (because floppy_extend_file does not this) |
||
1748 | push eax ecx edi |
||
1749 | xor eax, eax |
||
1750 | mov ecx, 0x200 |
||
1751 | sub ecx, [esp+4+12] |
||
1752 | jbe @f |
||
380 | serge | 1753 | mov edi, FDD_BUFF |
131 | diamond | 1754 | add edi, [esp+4+12] |
2434 | Serge | 1755 | rep stosb |
131 | diamond | 1756 | @@: |
1757 | ; zero uninitialized data in the last sector |
||
1758 | mov ecx, 0x200 |
||
1759 | sub ecx, esi |
||
1760 | jbe @f |
||
380 | serge | 1761 | mov edi, FDD_BUFF |
131 | diamond | 1762 | add edi, esi |
2434 | Serge | 1763 | rep stosb |
131 | diamond | 1764 | @@: |
1765 | pop edi ecx eax |
||
1766 | ; copy new data |
||
1767 | push eax |
||
1768 | mov eax, edx |
||
1769 | neg ebx |
||
1770 | jecxz @f |
||
380 | serge | 1771 | add ebx, FDD_BUFF+0x200 |
131 | diamond | 1772 | call memmove |
1773 | xor ebx, ebx |
||
1774 | @@: |
||
1775 | pop eax |
||
1776 | ; save sector |
||
1777 | pusha |
||
1778 | call save_chs_sector |
||
1779 | popa |
||
1780 | cmp [FDC_Status], 0 |
||
1781 | jnz .device_err2 |
||
1782 | add edx, ecx |
||
1783 | sub [esp], ecx |
||
1784 | pop ecx |
||
1785 | jz .done |
||
321 | diamond | 1786 | .skip: |
131 | diamond | 1787 | .next_cluster: |
381 | serge | 1788 | movzx edi, word [edi*2+FLOPPY_FAT] |
131 | diamond | 1789 | sub esi, 0x200 |
1790 | jae @f |
||
1791 | xor esi, esi |
||
1792 | @@: |
||
1793 | sub dword [esp], 0x200 |
||
1794 | jae .write_loop |
||
1795 | and dword [esp], 0 |
||
1796 | jmp .write_loop |
||
1797 | .done: |
||
1798 | mov [fdc_irq_func], fdc_null |
||
1799 | jmp .ret |
||
1800 | |||
1801 | floppy_extend_file.zero_size: |
||
1802 | xor eax, eax |
||
1803 | jmp floppy_extend_file.start_extend |
||
1804 | |||
1805 | ; extends file on floppy to given size (new data area is undefined) |
||
1806 | ; in: edi->direntry, ecx=new size |
||
133 | diamond | 1807 | ; out: CF=0 => OK, eax=0 |
131 | diamond | 1808 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL) |
1809 | floppy_extend_file: |
||
1810 | push ecx |
||
1811 | ; find the last cluster of file |
||
1812 | movzx eax, word [edi+26] ; first cluster |
||
1813 | mov ecx, [edi+28] |
||
1814 | jecxz .zero_size |
||
1815 | @@: |
||
1816 | sub ecx, 0x200 |
||
1817 | jbe @f |
||
381 | serge | 1818 | mov eax, [eax*2+FLOPPY_FAT] |
131 | diamond | 1819 | and eax, 0xFFF |
1820 | jz .fat_err |
||
1821 | cmp eax, 0xFF8 |
||
1822 | jb @b |
||
1823 | .fat_err: |
||
1824 | pop ecx |
||
1825 | push ERROR_FAT_TABLE |
||
1826 | pop eax |
||
1827 | stc |
||
1828 | ret |
||
1829 | @@: |
||
1830 | push eax |
||
381 | serge | 1831 | mov eax, [eax*2+FLOPPY_FAT] |
131 | diamond | 1832 | and eax, 0xFFF |
1833 | cmp eax, 0xFF8 |
||
1834 | pop eax |
||
1835 | jb .fat_err |
||
1836 | ; set length to full number of sectors |
||
1837 | sub [edi+28], ecx |
||
1838 | .start_extend: |
||
1839 | pop ecx |
||
1840 | ; now do extend |
||
1841 | push edx esi |
||
381 | serge | 1842 | mov esi, FLOPPY_FAT+2*2 ; start scan from cluster 2 |
131 | diamond | 1843 | mov edx, 2847 ; number of clusters to scan |
1844 | .extend_loop: |
||
1845 | cmp [edi+28], ecx |
||
1846 | jae .extend_done |
||
1847 | ; add new sector |
||
1848 | push ecx |
||
1849 | push edi |
||
1850 | .scan: |
||
1851 | mov ecx, edx |
||
1852 | mov edi, esi |
||
1853 | jecxz .disk_full |
||
1854 | push eax |
||
1855 | xor eax, eax |
||
2434 | Serge | 1856 | repnz scasw |
131 | diamond | 1857 | pop eax |
1858 | jnz .disk_full |
||
1859 | mov word [edi-2], 0xFFF |
||
1860 | mov esi, edi |
||
1861 | mov edx, ecx |
||
381 | serge | 1862 | sub edi, FLOPPY_FAT |
131 | diamond | 1863 | shr edi, 1 |
1864 | dec edi ; now edi=new cluster |
||
1865 | test eax, eax |
||
1866 | jz .first_cluster |
||
381 | serge | 1867 | mov [FLOPPY_FAT+eax*2], di |
131 | diamond | 1868 | jmp @f |
1869 | .first_cluster: |
||
1870 | pop eax ; eax->direntry |
||
1871 | push eax |
||
1872 | mov [eax+26], di |
||
1873 | @@: |
||
1874 | mov eax, edi ; eax=new cluster |
||
1875 | pop edi ; edi->direntry |
||
1876 | pop ecx ; ecx=required size |
||
1877 | add dword [edi+28], 0x200 |
||
1878 | jmp .extend_loop |
||
1879 | .extend_done: |
||
1880 | mov [edi+28], ecx |
||
1881 | pop esi edx |
||
133 | diamond | 1882 | xor eax, eax ; CF=0 |
131 | diamond | 1883 | ret |
1884 | .disk_full: |
||
1885 | pop edi ecx |
||
1886 | pop esi edx |
||
1887 | stc |
||
1888 | push ERROR_DISK_FULL |
||
1889 | pop eax |
||
1890 | ret |
||
1891 | |||
133 | diamond | 1892 | ;---------------------------------------------------------------- |
1893 | ; |
||
1894 | ; fs_FloppySetFileEnd - set end of file on floppy |
||
1895 | ; |
||
1896 | ; esi points to filename |
||
1897 | ; ebx points to 64-bit number = new file size |
||
1898 | ; ecx ignored (reserved) |
||
1899 | ; edx ignored (reserved) |
||
1900 | ; |
||
1901 | ; ret eax = 0 ok or other = errormsg |
||
1902 | ; |
||
1903 | ;-------------------------------------------------------------- |
||
1904 | fs_FloppySetFileEnd: |
||
1905 | call read_flp_fat |
||
1906 | cmp [FDC_Status], 0 |
||
1907 | jnz ret11 |
||
1908 | cmp byte [esi], 0 |
||
1909 | jnz @f |
||
1910 | .access_denied: |
||
1911 | push ERROR_ACCESS_DENIED |
||
1912 | jmp .ret |
||
1913 | @@: |
||
1914 | push edi |
||
1915 | call fd_find_lfn |
||
1916 | jnc @f |
||
1917 | pop edi |
||
1918 | push ERROR_FILE_NOT_FOUND |
||
1919 | .ret: |
||
1920 | pop eax |
||
1921 | jmp .doret |
||
1922 | @@: |
||
1923 | ; must not be directory |
||
1924 | test byte [edi+11], 10h |
||
1925 | jz @f |
||
1926 | pop edi |
||
1927 | jmp .access_denied |
||
1928 | @@: |
||
1929 | ; file size must not exceed 4 Gb |
||
1930 | cmp dword [ebx+4], 0 |
||
1931 | jz @f |
||
1932 | pop edi |
||
1933 | push ERROR_END_OF_FILE |
||
1934 | jmp .ret |
||
1935 | @@: |
||
1936 | push eax |
||
1937 | ; set file modification date/time to current |
||
1938 | call fat_update_datetime |
||
1939 | mov eax, [ebx] |
||
1940 | cmp eax, [edi+28] |
||
1941 | jb .truncate |
||
1942 | ja .expand |
||
1943 | pop eax |
||
1944 | pushad |
||
1945 | call save_chs_sector |
||
1946 | popad |
||
1947 | pop edi |
||
1948 | xor eax, eax |
||
1949 | cmp [FDC_Status], 0 |
||
1950 | jz @f |
||
1951 | mov al, 11 |
||
1952 | @@: |
||
1953 | .doret: |
||
1954 | mov [fdc_irq_func], fdc_null |
||
1955 | ret |
||
1956 | .expand: |
||
1957 | push ecx |
||
1958 | push dword [edi+28] ; save old size |
||
1959 | mov ecx, eax |
||
1960 | call floppy_extend_file |
||
1961 | push eax ; return code |
||
1962 | jnc .expand_ok |
||
1963 | cmp al, ERROR_DISK_FULL |
||
1964 | jz .disk_full |
||
1965 | pop eax ecx ecx edi edi |
||
1966 | jmp .doret |
||
1967 | .device_err: |
||
1968 | pop eax |
||
1969 | .device_err2: |
||
1970 | pop ecx ecx eax edi |
||
1971 | push 11 |
||
1972 | jmp .ret |
||
1973 | .disk_full: |
||
1974 | .expand_ok: |
||
1975 | ; save directory & FAT |
||
1976 | mov eax, [edi+28] |
||
1977 | xchg eax, [esp+12] |
||
1978 | movzx edi, word [edi+26] |
||
1979 | pusha |
||
1980 | call save_chs_sector |
||
1981 | popa |
||
1982 | cmp [FDC_Status], 0 |
||
1983 | jnz .device_err |
||
1984 | call save_flp_fat |
||
1985 | cmp [FDC_Status], 0 |
||
1986 | jnz .device_err |
||
1987 | call SetUserInterrupts |
||
1988 | ; now zero new data |
||
1989 | ; edi = current cluster, [esp+12]=new size, [esp+4]=old size, [esp]=return code |
||
1990 | .zero_loop: |
||
1991 | sub dword [esp+4], 0x200 |
||
1992 | jae .next_cluster |
||
1993 | cmp dword [esp+4], -0x200 |
||
1994 | jz .noread |
||
1995 | lea eax, [edi+31] |
||
1996 | pusha |
||
1997 | call read_chs_sector |
||
1998 | popa |
||
1999 | cmp [FDC_Status], 0 |
||
2000 | jnz .err_next |
||
2001 | .noread: |
||
2002 | mov ecx, [esp+4] |
||
2003 | neg ecx |
||
2004 | push edi |
||
380 | serge | 2005 | mov edi, FDD_BUFF+0x200 |
133 | diamond | 2006 | add edi, [esp+8] |
2007 | xor eax, eax |
||
2008 | mov [esp+8], eax |
||
2434 | Serge | 2009 | rep stosb |
133 | diamond | 2010 | pop edi |
2011 | lea eax, [edi+31] |
||
2012 | pusha |
||
2013 | call save_chs_sector |
||
2014 | popa |
||
2015 | cmp [FDC_Status], 0 |
||
2016 | jz .next_cluster |
||
2017 | .err_next: |
||
2018 | mov byte [esp], 11 |
||
2019 | .next_cluster: |
||
2020 | sub dword [esp+12], 0x200 |
||
2021 | jbe .expand_done |
||
381 | serge | 2022 | movzx edi, word [FLOPPY_FAT+edi*2] |
133 | diamond | 2023 | jmp .zero_loop |
2024 | .expand_done: |
||
2025 | pop eax ecx ecx edi edi |
||
2026 | jmp .doret |
||
2027 | .truncate: |
||
2028 | mov [edi+28], eax |
||
2029 | push ecx |
||
2030 | movzx ecx, word [edi+26] |
||
2031 | test eax, eax |
||
2032 | jz .zero_size |
||
2033 | ; find new last sector |
||
2034 | @@: |
||
2035 | sub eax, 0x200 |
||
2036 | jbe @f |
||
381 | serge | 2037 | movzx ecx, word [FLOPPY_FAT+ecx*2] |
133 | diamond | 2038 | jmp @b |
2039 | @@: |
||
2040 | ; we will zero data at the end of last sector - remember it |
||
2041 | push ecx |
||
2042 | ; terminate FAT chain |
||
381 | serge | 2043 | lea ecx, [FLOPPY_FAT+ecx+ecx] |
133 | diamond | 2044 | push dword [ecx] |
2045 | mov word [ecx], 0xFFF |
||
2046 | pop ecx |
||
2047 | and ecx, 0xFFF |
||
2048 | jmp .delete |
||
2049 | .zero_size: |
||
2050 | and word [edi+26], 0 |
||
2051 | push 0 |
||
2052 | .delete: |
||
2053 | ; delete FAT chain starting with ecx |
||
2054 | ; mark all clusters as free |
||
2055 | cmp ecx, 0xFF8 |
||
2056 | jae .deleted |
||
381 | serge | 2057 | lea ecx, [FLOPPY_FAT+ecx+ecx] |
133 | diamond | 2058 | push dword [ecx] |
2059 | and word [ecx], 0 |
||
2060 | pop ecx |
||
2061 | and ecx, 0xFFF |
||
2062 | jmp .delete |
||
2063 | .deleted: |
||
2064 | mov edi, [edi+28] |
||
2065 | ; save directory & FAT |
||
2066 | mov eax, [esp+8] |
||
2067 | pusha |
||
2068 | call save_chs_sector |
||
2069 | popa |
||
2070 | cmp [FDC_Status], 0 |
||
2071 | jnz .device_err2 |
||
2072 | call save_flp_fat |
||
2073 | cmp [FDC_Status], 0 |
||
2074 | jnz .device_err2 |
||
2075 | ; zero last sector, ignore errors |
||
2076 | pop eax |
||
2077 | add eax, 31 |
||
2078 | and edi, 0x1FF |
||
2079 | jz .truncate_done |
||
2080 | call SetUserInterrupts |
||
2081 | pusha |
||
2082 | call read_chs_sector |
||
2083 | popa |
||
380 | serge | 2084 | add edi, FDD_BUFF |
2085 | mov ecx, FDD_BUFF+0x200 |
||
133 | diamond | 2086 | sub ecx, edi |
2087 | push eax |
||
2088 | xor eax, eax |
||
2434 | Serge | 2089 | rep stosb |
133 | diamond | 2090 | pop eax |
2091 | pusha |
||
2092 | call save_chs_sector |
||
2093 | popa |
||
2094 | .truncate_done: |
||
2095 | pop ecx eax edi |
||
2096 | xor eax, eax |
||
2097 | jmp .doret |
||
2098 | |||
86 | diamond | 2099 | fs_FloppyGetFileInfo: |
2100 | call read_flp_fat |
||
2101 | cmp [FDC_Status], 0 |
||
2102 | jnz ret11 |
||
2103 | cmp byte [esi], 0 |
||
2104 | jnz @f |
||
2105 | mov eax, 2 ; unsupported |
||
2106 | ret |
||
2107 | @@: |
||
2108 | push edi |
||
2109 | call fd_find_lfn |
||
2110 | jmp fs_GetFileInfo_finish |
||
2111 | |||
2112 | ret11: |
||
2113 | mov eax, 11 |
||
2114 | ret |
||
2115 | |||
2116 | fs_FloppySetFileInfo: |
||
2117 | call read_flp_fat |
||
2118 | cmp [FDC_Status], 0 |
||
2119 | jnz ret11 |
||
2120 | cmp byte [esi], 0 |
||
2121 | jnz @f |
||
2122 | mov eax, 2 ; unsupported |
||
2123 | ret |
||
2124 | @@: |
||
2125 | push edi |
||
2126 | call fd_find_lfn |
||
2127 | jnc @f |
||
2128 | pop edi |
||
2129 | mov eax, ERROR_FILE_NOT_FOUND |
||
2130 | ret |
||
2131 | @@: |
||
2132 | push eax |
||
2133 | call bdfe_to_fat_entry |
||
2134 | pop eax |
||
2135 | pusha |
||
2136 | call save_chs_sector |
||
2137 | popa |
||
2138 | pop edi |
||
2139 | xor eax, eax |
||
1322 | Lrz | 2140 | cmp [FDC_Status], al |
86 | diamond | 2141 | jz @f |
2142 | mov al, 11 |
||
2143 | @@: |
||
2144 | ret |
||
2145 | |||
91 | diamond | 2146 | ;---------------------------------------------------------------- |
2147 | ; |
||
171 | diamond | 2148 | ; fs_FloppyDelete - delete file or empty folder from floppy |
2149 | ; |
||
2150 | ; esi points to filename |
||
2151 | ; |
||
2152 | ; ret eax = 0 ok or other = errormsg |
||
2153 | ; |
||
2154 | ;-------------------------------------------------------------- |
||
2155 | fs_FloppyDelete: |
||
2156 | call read_flp_fat |
||
2157 | cmp [FDC_Status], 0 |
||
2158 | jz @f |
||
2159 | push 11 |
||
2160 | jmp .pop_ret |
||
2161 | @@: |
||
2162 | cmp byte [esi], 0 |
||
2163 | jnz @f |
||
2164 | ; cannot delete root! |
||
2165 | .access_denied: |
||
2166 | push ERROR_ACCESS_DENIED |
||
2167 | .pop_ret: |
||
2168 | pop eax |
||
2169 | ret |
||
2170 | @@: |
||
2171 | and [fd_prev_sector], 0 |
||
2172 | and [fd_prev_prev_sector], 0 |
||
2173 | push edi |
||
2174 | call fd_find_lfn |
||
2175 | jnc .found |
||
2176 | pop edi |
||
2177 | push ERROR_FILE_NOT_FOUND |
||
2178 | jmp .pop_ret |
||
2179 | .found: |
||
2180 | cmp dword [edi], '. ' |
||
2181 | jz .access_denied2 |
||
2182 | cmp dword [edi], '.. ' |
||
2183 | jz .access_denied2 |
||
2184 | test byte [edi+11], 10h |
||
2185 | jz .dodel |
||
2186 | ; we can delete only empty folders! |
||
2187 | push eax |
||
2188 | movzx eax, word [edi+26] |
||
2189 | push ebx |
||
2190 | pusha |
||
2191 | add eax, 31 |
||
2192 | call read_chs_sector |
||
2193 | popa |
||
380 | serge | 2194 | mov ebx, FDD_BUFF + 2*0x20 |
171 | diamond | 2195 | .checkempty: |
2196 | cmp byte [ebx], 0 |
||
2197 | jz .empty |
||
2198 | cmp byte [ebx], 0xE5 |
||
2199 | jnz .notempty |
||
2200 | add ebx, 0x20 |
||
380 | serge | 2201 | cmp ebx, FDD_BUFF + 0x200 |
171 | diamond | 2202 | jb .checkempty |
2203 | movzx eax, word [FLOPPY_FAT + eax*2] |
||
2204 | pusha |
||
2205 | add eax, 31 |
||
2206 | call read_chs_sector |
||
2207 | popa |
||
380 | serge | 2208 | mov ebx, FDD_BUFF |
171 | diamond | 2209 | jmp .checkempty |
2210 | .notempty: |
||
2211 | pop ebx |
||
2212 | pop eax |
||
2213 | .access_denied2: |
||
2214 | pop edi |
||
2215 | jmp .access_denied |
||
2216 | .empty: |
||
2217 | pop ebx |
||
2218 | pop eax |
||
2219 | pusha |
||
2220 | call read_chs_sector |
||
2221 | popa |
||
2222 | .dodel: |
||
2223 | push eax |
||
2224 | movzx eax, word [edi+26] |
||
2225 | xchg eax, [esp] |
||
2226 | ; delete folder entry |
||
2227 | mov byte [edi], 0xE5 |
||
2228 | ; delete LFN (if present) |
||
2229 | .lfndel: |
||
380 | serge | 2230 | cmp edi, FDD_BUFF |
171 | diamond | 2231 | ja @f |
2232 | cmp [fd_prev_sector], 0 |
||
2233 | jz .lfndone |
||
2234 | push [fd_prev_sector] |
||
2235 | push [fd_prev_prev_sector] |
||
2236 | pop [fd_prev_sector] |
||
2237 | and [fd_prev_prev_sector], 0 |
||
2238 | pusha |
||
2239 | call save_chs_sector |
||
2240 | popa |
||
2241 | pop eax |
||
2242 | pusha |
||
2243 | call read_chs_sector |
||
2244 | popa |
||
380 | serge | 2245 | mov edi, FDD_BUFF+0x200 |
171 | diamond | 2246 | @@: |
2247 | sub edi, 0x20 |
||
2248 | cmp byte [edi], 0xE5 |
||
2249 | jz .lfndone |
||
2250 | cmp byte [edi+11], 0xF |
||
2251 | jnz .lfndone |
||
2252 | mov byte [edi], 0xE5 |
||
2253 | jmp .lfndel |
||
2254 | .lfndone: |
||
2255 | pusha |
||
2256 | call save_chs_sector |
||
2257 | popa |
||
2258 | ; delete FAT chain |
||
2259 | pop eax |
||
2260 | test eax, eax |
||
2261 | jz .done |
||
2262 | @@: |
||
2263 | lea eax, [FLOPPY_FAT + eax*2] |
||
2264 | push dword [eax] |
||
2265 | and word [eax], 0 |
||
2266 | pop eax |
||
2267 | and eax, 0xFFF |
||
2268 | jnz @b |
||
2269 | .done: |
||
2270 | call save_flp_fat |
||
2271 | pop edi |
||
2272 | xor eax, eax |
||
2273 | ret |
||
2274 | |||
78 | diamond | 2275 | ; \end{diamond}=>=>->->-> |