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Rev | Author | Line No. | Line |
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425 | victor | 1 | $Revision: 465 $ |
431 | serge | 2 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
465 | serge | 3 | ;; ;; |
431 | serge | 4 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
5 | ;; Distributed under terms of the GNU General Public License ;; |
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6 | ;; ;; |
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465 | serge | 7 | ;; FAT12.INC ;; |
8 | ;; (C) 2005 Mario79, License: GPL ;; |
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9 | ;; ;; |
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431 | serge | 10 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ha | 11 | |
12 | n_sector dd 0 ; temporary save for sector value |
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13 | flp_status dd 0 |
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14 | clust_tmp_flp dd 0 ; used by analyze_directory and analyze_directory_to_write |
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15 | path_pointer_flp dd 0 |
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16 | pointer_file_name_flp dd 0 |
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17 | save_root_flag db 0 |
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18 | save_flag db 0 |
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19 | root_read db 0 ; 0-necessary to load root, 1-not to load root |
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20 | flp_fat db 0 ; 0-necessary to load fat, 1-not to load fat |
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21 | flp_number db 0 ; 1- Floppy A, 2-Floppy B |
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22 | old_track db 0 ; old value track |
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23 | flp_label rb 15 ; Label and ID of inserted floppy disk |
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24 | |||
25 | reserve_flp: |
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26 | |||
27 | cli |
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28 | cmp [flp_status],0 |
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29 | je reserve_flp_ok |
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30 | |||
31 | sti |
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32 | call change_task |
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33 | jmp reserve_flp |
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34 | |||
35 | reserve_flp_ok: |
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36 | |||
37 | push eax |
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379 | serge | 38 | mov eax,[CURRENT_TASK] |
1 | ha | 39 | shl eax,5 |
379 | serge | 40 | mov eax,[eax+CURRENT_TASK+TASKDATA.pid] |
1 | ha | 41 | mov [flp_status],eax |
42 | pop eax |
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43 | sti |
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44 | ret |
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45 | |||
46 | floppy_free_space: |
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47 | ;--------------------------------------------- |
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48 | ; |
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49 | ; returns free space in edi |
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50 | ; |
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51 | ;--------------------------------------------- |
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52 | push eax ebx ecx |
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53 | call read_flp_fat |
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54 | cmp [FDC_Status],0 |
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55 | jne fdc_status_error_2 |
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133 | diamond | 56 | mov eax,0x282004 |
1 | ha | 57 | xor edi,edi |
58 | mov ecx,2847 ;1448000/512 |
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59 | rdfs1_1: |
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60 | mov ebx,[eax] |
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61 | and ebx,4095 |
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62 | jne rdfs2_1 |
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63 | add edi,512 |
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64 | rdfs2_1: |
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65 | add eax,2 |
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66 | loop rdfs1_1 |
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67 | fdc_status_error_2: |
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68 | pop ecx ebx eax |
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69 | ret |
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70 | |||
71 | |||
131 | diamond | 72 | |
73 | |||
1 | ha | 74 | floppy_fileread: |
75 | ;---------------------------------------------------------------- |
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76 | ; |
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77 | ; fileread - sys floppy |
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78 | ; |
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79 | ; eax points to filename 11 chars - for root directory |
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80 | ; ebx first wanted block ; 1+ ; if 0 then set to 1 |
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81 | ; ecx number of blocks to read ; 1+ ; if 0 then set to 1 |
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82 | ; edx mem location to return data |
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83 | ; esi length of filename 12*X |
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84 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
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85 | ; |
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86 | ; ret ebx = size or 0xffffffff file not found |
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87 | ; eax = 0 ok read or other = errormsg |
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88 | ; 10 = access denied |
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89 | ;-------------------------------------------------------------- |
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90 | |||
91 | mov [save_flag],0 |
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92 | mov [path_pointer_flp],edi |
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93 | cmp esi,0 ; return ramdisk root |
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94 | jne fr_noroot_1 |
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95 | cmp ebx,224/16 |
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96 | jbe fr_do_1 |
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97 | mov eax,5 |
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98 | mov ebx,0 |
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99 | mov [flp_status],0 |
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100 | ret |
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101 | |||
102 | fr_do_1: |
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103 | push ebx ecx edx |
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104 | call read_flp_root |
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105 | pop edx ecx ebx |
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106 | cmp [FDC_Status],0 |
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107 | jne fdc_status_error_1 |
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108 | mov edi,edx |
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109 | dec ebx |
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110 | shl ebx,9 |
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380 | serge | 111 | mov esi,FLOPPY_BUFF |
1 | ha | 112 | add esi,ebx |
113 | shl ecx,9 |
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114 | cld |
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115 | rep movsb |
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116 | mov eax,0 ; ok read |
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117 | mov ebx,0 |
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118 | mov [flp_status],0 |
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119 | ret |
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120 | fdc_status_error_1: |
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121 | mov [flp_status],0 |
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131 | diamond | 122 | mov eax,10 |
1 | ha | 123 | mov ebx,-1 |
124 | ret |
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125 | |||
126 | fr_noroot_1: |
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127 | sub esp,32 |
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128 | call expand_filename |
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129 | frfloppy_1: |
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130 | cmp ebx,0 |
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131 | jne frfl5_1 |
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132 | mov ebx,1 |
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133 | frfl5_1: |
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134 | cmp ecx,0 |
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135 | jne frfl6_1 |
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136 | mov ecx,1 |
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137 | frfl6_1: |
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138 | dec ebx |
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139 | push eax |
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140 | push eax ebx ecx edx esi edi |
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141 | call read_flp_fat |
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142 | cmp [FDC_Status],0 |
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143 | jne fdc_status_error_3_1 |
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144 | mov [FDD_Track],0 ; Цилиндр |
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145 | mov [FDD_Head],1 ; Сторона |
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146 | mov [FDD_Sector],2 ; Сектор |
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147 | call SeekTrack |
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148 | mov dh,14 |
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149 | l.20_1: |
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150 | call ReadSectWithRetr |
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151 | cmp [FDC_Status],0 |
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152 | jne fdc_status_error_3_1 |
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153 | mov dl,16 |
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380 | serge | 154 | mov edi,FDD_BUFF |
1 | ha | 155 | inc [FDD_Sector] |
156 | l.21_1: |
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157 | mov esi,eax ;Name of file we want |
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158 | mov ecx,11 |
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159 | cld |
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160 | rep cmpsb ;Found the file? |
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161 | je fifound_1 ;Yes |
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162 | add ecx,21 |
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163 | add edi, ecx ;Advance to next entry |
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164 | dec dl |
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165 | cmp dl,0 |
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166 | jne l.21_1 |
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167 | dec dh |
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168 | cmp dh,0 |
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169 | jne l.20_1 |
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170 | fdc_status_error_3: |
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171 | mov eax,5 ; file not found ? |
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172 | mov ebx,-1 |
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173 | add esp,32+28 |
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174 | mov [flp_status],0 |
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175 | ret |
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176 | fdc_status_error_3_2: |
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177 | cmp [FDC_Status],0 |
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178 | je fdc_status_error_3 |
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179 | fdc_status_error_3_1: |
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180 | add esp,32+28 |
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181 | jmp fdc_status_error_1 |
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182 | |||
183 | fifound_1: |
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184 | mov eax,[path_pointer_flp] |
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185 | cmp [eax+36],byte 0 |
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186 | je fifound_2 |
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187 | add edi,0xf |
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188 | mov eax,[edi] |
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189 | and eax,65535 |
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190 | mov ebx,[path_pointer_flp] |
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191 | add ebx,36 |
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192 | call get_cluster_of_a_path_flp |
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193 | jc fdc_status_error_3_2 |
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194 | mov ebx,[ebx-11+28] ;file size |
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195 | mov [esp+20],ebx |
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196 | mov [esp+24],ebx |
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197 | jmp fifound_3 |
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198 | fifound_2: |
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199 | mov ebx,[edi-11+28] ;file size |
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200 | mov [esp+20],ebx |
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201 | mov [esp+24],ebx |
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202 | add edi,0xf |
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203 | mov eax,[edi] |
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204 | fifound_3: |
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205 | and eax,65535 |
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206 | mov [n_sector],eax ;eax=cluster |
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207 | frnew_1: |
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208 | add eax,31 ;bootsector+2*fat+filenames |
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209 | cmp [esp+16],dword 0 ; wanted cluster ? |
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210 | jne frfl7_1 |
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211 | call read_chs_sector |
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212 | cmp [FDC_Status],0 |
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213 | jne fdc_status_error_5 |
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214 | mov edi,[esp+8] |
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215 | call give_back_application_data_1 |
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216 | add [esp+8],dword 512 |
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217 | dec dword [esp+12] ; last wanted cluster ? |
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218 | cmp [esp+12],dword 0 |
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219 | je frnoread_1 |
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220 | jmp frfl8_1 |
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221 | frfl7_1: |
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222 | dec dword [esp+16] |
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223 | frfl8_1: |
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224 | mov edi,[n_sector] |
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225 | shl edi,1 ;find next cluster from FAT |
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381 | serge | 226 | add edi,FLOPPY_FAT |
1 | ha | 227 | mov eax,[edi] |
228 | and eax,4095 |
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229 | mov edi,eax |
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230 | mov [n_sector],edi |
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231 | cmp edi,4095 ;eof - cluster |
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232 | jz frnoread2_1 |
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233 | cmp [esp+24],dword 512 ;eof - size |
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234 | jb frnoread_1 |
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235 | sub [esp+24],dword 512 |
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236 | jmp frnew_1 |
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237 | |||
131 | diamond | 238 | read_chs_sector: |
1 | ha | 239 | call calculate_chs |
240 | call ReadSectWithRetr |
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241 | ret |
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242 | |||
243 | frnoread2_1: |
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244 | cmp [esp+16],dword 0 ; eof without read ? |
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245 | je frnoread_1 |
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246 | mov [fdc_irq_func],fdc_null |
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247 | pop edi esi edx ecx |
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248 | add esp,4 |
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249 | pop ebx ; ebx <- eax : size of file |
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250 | add esp,36 |
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251 | mov eax,6 ; end of file |
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252 | mov [flp_status],0 |
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253 | ret |
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254 | |||
255 | frnoread_1: |
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256 | pop edi esi edx ecx |
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257 | add esp,4 |
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258 | pop ebx ; ebx <- eax : size of file |
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259 | add esp,36 |
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260 | mov eax,0 |
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261 | mov [flp_status],0 |
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262 | ret |
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263 | |||
264 | fdc_status_error_5: |
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265 | pop edi esi edx ecx |
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266 | add esp,4 |
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267 | pop ebx ; ebx <- eax : size of file |
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268 | add esp,36 |
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269 | jmp fdc_status_error_1 |
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270 | |||
271 | read_flp_root: |
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272 | pusha |
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273 | call check_label |
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274 | cmp [FDC_Status],0 |
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275 | jne unnecessary_root_read |
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276 | cmp [root_read],1 |
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277 | je unnecessary_root_read |
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278 | mov [FDD_Track],0 ; Цилиндр |
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279 | mov [FDD_Head],1 ; Сторона |
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131 | diamond | 280 | mov [FDD_Sector],2 ; Сектор |
380 | serge | 281 | mov edi,FLOPPY_BUFF |
1 | ha | 282 | call SeekTrack |
283 | read_flp_root_1: |
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284 | call ReadSectWithRetr |
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285 | cmp [FDC_Status],0 |
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286 | jne unnecessary_root_read |
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287 | push edi |
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288 | call give_back_application_data_1 |
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289 | pop edi |
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290 | add edi,512 |
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291 | inc [FDD_Sector] |
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292 | cmp [FDD_Sector],16 |
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293 | jne read_flp_root_1 |
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294 | mov [root_read],1 |
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295 | unnecessary_root_read: |
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296 | popa |
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297 | ret |
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298 | |||
299 | |||
300 | read_flp_fat: |
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301 | pusha |
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302 | call check_label |
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303 | cmp [FDC_Status],0 |
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304 | jne unnecessary_flp_fat |
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305 | cmp [flp_fat],1 |
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306 | je unnecessary_flp_fat |
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307 | mov [FDD_Track],0 ; Цилиндр |
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308 | mov [FDD_Head],0 ; Сторона |
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131 | diamond | 309 | mov [FDD_Sector],2 ; Сектор |
380 | serge | 310 | mov edi,FLOPPY_BUFF |
1 | ha | 311 | call SeekTrack |
312 | read_flp_fat_1: |
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313 | call ReadSectWithRetr |
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314 | cmp [FDC_Status],0 |
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315 | jne unnecessary_flp_fat |
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316 | push edi |
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317 | call give_back_application_data_1 |
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318 | pop edi |
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319 | add edi,512 |
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320 | inc [FDD_Sector] |
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321 | cmp [FDD_Sector],19 |
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322 | jne read_flp_fat_1 |
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323 | mov [FDD_Sector],1 |
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324 | mov [FDD_Head],1 |
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325 | call ReadSectWithRetr |
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326 | cmp [FDC_Status],0 |
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327 | jne unnecessary_flp_fat |
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328 | call give_back_application_data_1 |
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329 | call calculatefatchain_flp |
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330 | mov [root_read],0 |
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331 | mov [flp_fat],1 |
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332 | unnecessary_flp_fat: |
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333 | popa |
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334 | ret |
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335 | |||
336 | calculatefatchain_flp: |
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337 | pushad |
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338 | |||
380 | serge | 339 | mov esi,FLOPPY_BUFF |
381 | serge | 340 | mov edi,FLOPPY_FAT |
1 | ha | 341 | |
342 | fcnew_1: |
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343 | mov eax,dword [esi] |
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344 | mov ebx,dword [esi+4] |
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345 | mov ecx,dword [esi+8] |
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346 | mov edx,ecx |
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347 | shr edx,4 ;8 ok |
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348 | shr dx,4 ;7 ok |
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349 | xor ch,ch |
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350 | shld ecx,ebx,20 ;6 ok |
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351 | shr cx,4 ;5 ok |
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352 | shld ebx,eax,12 |
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353 | and ebx,0x0fffffff ;4 ok |
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354 | shr bx,4 ;3 ok |
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355 | shl eax,4 |
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356 | and eax,0x0fffffff ;2 ok |
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357 | shr ax,4 ;1 ok |
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358 | mov dword [edi],eax |
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359 | add edi,4 |
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360 | mov dword [edi],ebx |
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361 | add edi,4 |
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362 | mov dword [edi],ecx |
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363 | add edi,4 |
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364 | mov dword [edi],edx |
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131 | diamond | 365 | add edi,4 |
1 | ha | 366 | add esi,12 |
367 | |||
381 | serge | 368 | cmp edi,FLOPPY_FAT+2856*2 ;2849 clusters |
1 | ha | 369 | jnz fcnew_1 |
370 | |||
371 | popad |
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372 | ret |
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131 | diamond | 373 | |
1 | ha | 374 | check_label: |
375 | pushad |
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376 | mov [FDD_Track],0 ; Цилиндр |
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377 | mov [FDD_Head],0 ; Сторона |
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131 | diamond | 378 | mov [FDD_Sector],1 ; Сектор |
1 | ha | 379 | call SetUserInterrupts |
380 | call FDDMotorON |
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381 | call RecalibrateFDD |
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382 | cmp [FDC_Status],0 |
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383 | jne fdc_status_error |
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384 | call SeekTrack |
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385 | cmp [FDC_Status],0 |
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386 | jne fdc_status_error |
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387 | call ReadSectWithRetr |
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388 | cmp [FDC_Status],0 |
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131 | diamond | 389 | jne fdc_status_error |
1 | ha | 390 | mov esi,flp_label |
380 | serge | 391 | mov edi,FDD_BUFF+39 |
1 | ha | 392 | mov ecx,15 |
393 | cld |
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131 | diamond | 394 | rep cmpsb |
1 | ha | 395 | je same_label |
396 | mov [root_read],0 |
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397 | mov [flp_fat],0 |
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398 | same_label: |
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380 | serge | 399 | mov esi,FDD_BUFF+39 |
1 | ha | 400 | mov edi,flp_label |
401 | mov ecx,15 |
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402 | cld |
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403 | rep movsb |
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404 | popad |
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405 | ret |
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406 | fdc_status_error: |
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407 | popad |
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408 | ret |
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409 | |||
410 | save_flp_root: |
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411 | pusha |
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412 | call check_label |
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413 | cmp [FDC_Status],0 |
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414 | jne unnecessary_root_save |
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415 | cmp [root_read],0 |
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416 | je unnecessary_root_save |
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417 | mov [FDD_Track],0 ; Цилиндр |
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418 | mov [FDD_Head],1 ; Сторона |
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131 | diamond | 419 | mov [FDD_Sector],2 ; Сектор |
380 | serge | 420 | mov esi,FLOPPY_BUFF |
1 | ha | 421 | call SeekTrack |
422 | save_flp_root_1: |
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423 | push esi |
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424 | call take_data_from_application_1 |
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425 | pop esi |
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426 | add esi,512 |
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427 | call WriteSectWithRetr |
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428 | cmp [FDC_Status],0 |
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429 | jne unnecessary_root_save |
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430 | inc [FDD_Sector] |
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431 | cmp [FDD_Sector],16 |
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432 | jne save_flp_root_1 |
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433 | unnecessary_root_save: |
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434 | mov [fdc_irq_func],fdc_null |
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435 | popa |
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436 | ret |
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131 | diamond | 437 | |
1 | ha | 438 | save_flp_fat: |
439 | pusha |
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440 | call check_label |
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441 | cmp [FDC_Status],0 |
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442 | jne unnecessary_flp_fat_save |
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443 | cmp [flp_fat],0 |
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444 | je unnecessary_flp_fat_save |
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445 | call restorefatchain_flp |
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446 | mov [FDD_Track],0 ; Цилиндр |
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447 | mov [FDD_Head],0 ; Сторона |
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131 | diamond | 448 | mov [FDD_Sector],2 ; Сектор |
380 | serge | 449 | mov esi,FLOPPY_BUFF |
1 | ha | 450 | call SeekTrack |
451 | save_flp_fat_1: |
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452 | push esi |
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453 | call take_data_from_application_1 |
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454 | pop esi |
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455 | add esi,512 |
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456 | call WriteSectWithRetr |
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457 | cmp [FDC_Status],0 |
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458 | jne unnecessary_flp_fat_save |
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459 | inc [FDD_Sector] |
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460 | cmp [FDD_Sector],19 |
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461 | jne save_flp_fat_1 |
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462 | mov [FDD_Sector],1 |
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463 | mov [FDD_Head],1 |
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464 | call take_data_from_application_1 |
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465 | call WriteSectWithRetr |
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466 | cmp [FDC_Status],0 |
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467 | jne unnecessary_flp_fat_save |
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468 | mov [root_read],0 |
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469 | unnecessary_flp_fat_save: |
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470 | mov [fdc_irq_func],fdc_null |
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471 | popa |
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472 | ret |
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473 | |||
131 | diamond | 474 | |
1 | ha | 475 | restorefatchain_flp: ; restore fat chain |
476 | pushad |
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477 | |||
381 | serge | 478 | mov esi,FLOPPY_FAT |
380 | serge | 479 | mov edi,FLOPPY_BUFF |
1 | ha | 480 | |
481 | fcnew2_1: |
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482 | mov eax,dword [esi] |
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483 | mov ebx,dword [esi+4] |
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484 | shl ax,4 |
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485 | shl eax,4 |
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486 | shl bx,4 |
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487 | shr ebx,4 |
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488 | shrd eax,ebx,8 |
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489 | shr ebx,8 |
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490 | mov dword [edi],eax |
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491 | add edi,4 |
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492 | mov word [edi],bx |
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493 | add edi,2 |
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494 | add esi,8 |
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495 | |||
380 | serge | 496 | cmp edi,FLOPPY_BUFF+0x1200 ;4274 bytes - all used FAT |
1 | ha | 497 | jb fcnew2_1 |
498 | |||
380 | serge | 499 | mov esi,FLOPPY_BUFF ; duplicate fat chain |
500 | mov edi,FLOPPY_BUFF+0x1200 |
||
1 | ha | 501 | mov ecx,0x1200/4 |
502 | cld |
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503 | rep movsd |
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504 | |||
505 | popad |
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506 | ret |
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507 | |||
508 | |||
509 | floppy_filedelete: |
||
510 | ;-------------------------------------------- |
||
511 | ; |
||
512 | ; filedelete - sys floppy |
||
513 | ; in: |
||
514 | ; eax - filename 11 chars - for root directory |
||
515 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
||
516 | ; |
||
517 | ; out: |
||
518 | ; eax - 0 = successful, 1 = file not found, 10 = access denied |
||
519 | ; |
||
520 | ;-------------------------------------------- |
||
521 | mov [path_pointer_flp],edi |
||
522 | mov [save_flag],0 |
||
523 | mov ebp,1 ; file not found as default |
||
524 | filedelete_newtry_1: |
||
525 | sub esp,32 |
||
526 | call expand_filename |
||
527 | push eax ebx ecx edx esi edi |
||
528 | call read_flp_fat |
||
529 | cmp [FDC_Status],0 |
||
530 | jne frnoreadd_1 |
||
531 | mov [FDD_Track],0 ; Цилиндр |
||
532 | mov [FDD_Head],1 ; Сторона |
||
533 | mov [FDD_Sector],2 ; Сектор |
||
534 | call SeekTrack |
||
535 | mov dh,14 |
||
536 | l.20_2: |
||
537 | call ReadSectWithRetr |
||
538 | cmp [FDC_Status],0 |
||
539 | jne fdc_status_error_4 |
||
540 | mov dl,16 |
||
380 | serge | 541 | mov edi,FDD_BUFF |
1 | ha | 542 | inc [FDD_Sector] |
543 | l.21_2: |
||
544 | mov esi,eax ;Name of file we want |
||
545 | mov ecx,11 |
||
546 | cld |
||
547 | rep cmpsb ;Found the file? |
||
548 | je fifoundd_1 ;Yes |
||
549 | add ecx,21 |
||
550 | add edi, ecx ;Advance to next entry |
||
551 | dec dl |
||
552 | jne l.21_2 |
||
553 | dec dh |
||
554 | jne l.20_2 |
||
555 | jmp frnoreadd_1 |
||
556 | |||
557 | fdc_status_error_4: |
||
558 | pop edi esi edx ecx ebx eax |
||
559 | add esp,32 |
||
560 | jmp fdc_status_error_1 |
||
561 | |||
562 | fifoundd_1: |
||
563 | mov eax,[path_pointer_flp] |
||
564 | cmp [eax+36],byte 0 |
||
565 | je fifoundd_2 |
||
83 | diamond | 566 | movzx eax, word [edi+0xf] |
1 | ha | 567 | mov ebx,[path_pointer_flp] |
568 | add ebx,36 |
||
569 | call get_cluster_of_a_path_flp |
||
131 | diamond | 570 | jc frnoreadd_1_1 |
1 | ha | 571 | mov edi,ebx |
572 | add edi,11 |
||
573 | jmp fifoundd_2_1 |
||
574 | fifoundd_2: |
||
575 | dec [FDD_Sector] |
||
576 | fifoundd_2_1: |
||
577 | mov [edi-11],byte 0xE5 ;mark filename deleted |
||
83 | diamond | 578 | movzx edi, word [edi+0xf] ;edi = cluster |
1 | ha | 579 | frnewd_1: |
580 | shl edi,1 ;find next cluster from FAT |
||
381 | serge | 581 | add edi,FLOPPY_FAT |
1 | ha | 582 | mov eax,[edi] |
583 | mov [edi],word 0x0 ;clear fat chain cluster |
||
584 | and eax,4095 |
||
585 | mov edi,eax |
||
586 | cmp edi,dword 4095 ;last cluster ? |
||
587 | jz frnoreadd2_1 |
||
588 | jmp frnewd_1 |
||
589 | |||
590 | frnoreadd2_1: |
||
591 | call WriteSectWithRetr |
||
592 | cmp [FDC_Status],0 |
||
593 | jne fdc_status_error_4 |
||
594 | call save_flp_fat |
||
595 | cmp [FDC_Status],0 |
||
596 | jne fdc_status_error_4 |
||
597 | ; pop edi esi edx ecx ebx eax |
||
598 | ; add esp,32 |
||
599 | mov ebp,0 ; file found |
||
600 | ; jmp filedelete_newtry_1 |
||
601 | jmp frnoreadd_1 |
||
602 | |||
603 | frnoreadd_1_1: |
||
604 | cmp [FDC_Status],0 |
||
605 | jne fdc_status_error_4 |
||
606 | frnoreadd_1: |
||
607 | pop edi esi edx ecx ebx eax |
||
608 | add esp,32 |
||
609 | mov eax,ebp |
||
610 | ret |
||
611 | |||
612 | floppy_filesave: |
||
613 | ;---------------------------------------------------------- |
||
614 | ; |
||
615 | ; filesave - sys floppy |
||
616 | ; |
||
617 | ; eax ; pointer to file name 11 chars - for root directory |
||
618 | ; ebx ; buffer |
||
619 | ; ecx ; count to write in bytes |
||
620 | ; edx ; 0 create new , 1 append |
||
621 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
||
622 | ; |
||
623 | ; output : eax = 0 - ok |
||
131 | diamond | 624 | ; 5 - file not found / directory not found |
1 | ha | 625 | ; 8 - disk full |
626 | ; 10 - access denied |
||
627 | ;----------------------------------------------------------- |
||
628 | mov [path_pointer_flp],edi |
||
629 | sub esp,32 |
||
630 | call expand_filename |
||
631 | cmp edx,0 |
||
632 | jnz fsdel_1 |
||
633 | pusha |
||
634 | call floppy_filedelete |
||
635 | cmp [FDC_Status],0 |
||
636 | jne fdc_status_error_6 |
||
637 | popa |
||
638 | mov [save_flag],1 |
||
639 | fsdel_1: |
||
640 | call floppy_free_space |
||
641 | cmp [FDC_Status],0 |
||
642 | jne fdc_status_error_6 |
||
643 | cmp ecx,edi |
||
644 | jb rd_do_save_1 |
||
645 | add esp,32 |
||
646 | mov eax,8 ; not enough free space |
||
647 | mov [flp_status],0 |
||
648 | ret |
||
649 | |||
650 | fdc_status_error_6: |
||
131 | diamond | 651 | popa |
1 | ha | 652 | add esp,32 |
653 | jmp fdc_status_error_1 |
||
131 | diamond | 654 | |
1 | ha | 655 | rd_do_save_1: |
656 | push eax ebx ecx edx esi edi |
||
657 | call read_flp_fat |
||
658 | cmp [FDC_Status],0 |
||
659 | jne fdc_status_error_7 |
||
660 | push eax |
||
661 | mov eax,[path_pointer_flp] |
||
662 | cmp [eax+36],byte 0 |
||
663 | jne fifoundds_2 |
||
664 | pop eax |
||
665 | mov [save_root_flag],1 |
||
666 | call read_flp_root |
||
667 | cmp [FDC_Status],0 |
||
668 | jne fdc_status_error_7 |
||
380 | serge | 669 | mov edi,FLOPPY_BUFF ;Point at directory |
1 | ha | 670 | mov edx,224 +1 |
671 | ; find an empty spot for filename in the root dir |
||
672 | l20ds_1: |
||
673 | sub edx,1 |
||
83 | diamond | 674 | jz frnoreadds_1 |
1 | ha | 675 | l21ds_1: |
676 | cmp [edi],byte 0xE5 |
||
677 | jz fifoundds_1 |
||
678 | cmp [edi],byte 0x0 |
||
679 | jz fifoundds_1 |
||
680 | add edi,32 ; Advance to next entry |
||
681 | jmp l20ds_1 |
||
682 | |||
683 | fifoundds_2: |
||
684 | pop eax |
||
685 | mov [save_root_flag],0 |
||
686 | mov [FDD_Track],0 ; Цилиндр |
||
687 | mov [FDD_Head],1 ; Сторона |
||
688 | mov [FDD_Sector],2 ; Сектор |
||
689 | call SeekTrack |
||
690 | mov dh,14 |
||
691 | l.20_3: |
||
692 | call ReadSectWithRetr |
||
693 | cmp [FDC_Status],0 |
||
694 | jne fdc_status_error_7 |
||
695 | mov dl,16 |
||
380 | serge | 696 | mov edi,FDD_BUFF |
1 | ha | 697 | inc [FDD_Sector] |
698 | l.21_3: |
||
699 | mov esi,eax ;Name of file we want |
||
700 | mov ecx,11 |
||
701 | cld |
||
702 | rep cmpsb ;Found the file? |
||
703 | je fifoundds_3 ;Yes |
||
704 | add ecx,21 |
||
705 | add edi, ecx ;Advance to next entry |
||
706 | dec dl |
||
707 | jne l.21_3 |
||
708 | dec dh |
||
709 | jne l.20_3 |
||
710 | fdc_status_error_8: |
||
711 | pop edi esi edx ecx ebx eax |
||
712 | mov eax,5 ; file not found ? |
||
713 | mov ebx,-1 |
||
714 | add esp,32 |
||
715 | mov [flp_status],0 |
||
716 | ret |
||
717 | |||
718 | fifoundds_3: |
||
719 | add edi,0xf |
||
720 | mov eax,[edi] |
||
721 | and eax,65535 |
||
722 | mov ebx,[path_pointer_flp] |
||
723 | add ebx,36 |
||
724 | call get_cluster_of_a_path_flp |
||
725 | jc fdc_status_error_7_1 |
||
726 | found_directory_for_writing_flp: |
||
727 | call analyze_directory_to_write_flp |
||
728 | jc fdc_status_error_7_1 |
||
729 | mov edi,ebx |
||
730 | fifoundds_1: |
||
731 | push edi ; move the filename to root dir |
||
732 | mov esi,[esp+4+20] |
||
733 | cmp [save_root_flag],0 |
||
734 | jne fifoundds_4 |
||
735 | mov esi,[pointer_file_name_flp] |
||
736 | fifoundds_4: |
||
737 | mov ecx,11 |
||
738 | cld |
||
739 | rep movsb |
||
740 | pop edi |
||
741 | mov edx,edi |
||
742 | add edx,11+0xf ; edx <- cluster save position |
||
743 | mov ebx,[esp+12] ; save file size |
||
744 | mov [edi+28],ebx |
||
745 | mov [edi+11],byte 0x20 ; attribute |
||
746 | call get_date_for_file ; from FAT32.INC |
||
747 | mov [edi+24],ax ; date |
||
748 | mov [edi+18],ax ; date |
||
749 | call get_time_for_file ; from FAT32.INC |
||
750 | mov [edi+22],ax ; time |
||
751 | xor ax,ax |
||
752 | mov [edi+20],ax |
||
753 | mov ebx,1 ; first cluster |
||
754 | cmp [save_root_flag],0 |
||
755 | jne frnewds_1 |
||
131 | diamond | 756 | call frnewds_2 |
1 | ha | 757 | pusha |
758 | call WriteSectWithRetr |
||
759 | popa |
||
760 | cmp [FDC_Status],0 |
||
761 | jne fdc_status_error_7 |
||
762 | jmp frnewds_3 |
||
763 | |||
764 | frnewds_1: |
||
765 | call frnewds_2 |
||
766 | frnewds_3: |
||
767 | pusha ; move save to floppy cluster |
||
768 | add ebx,31 |
||
769 | mov eax,ebx |
||
770 | mov esi,[esp+32+16] |
||
771 | call take_data_from_application_1 |
||
772 | call save_chs_sector |
||
773 | cmp [FDC_Status],0 |
||
774 | jne fdc_status_error_7 |
||
775 | popa |
||
776 | mov eax,[esp+12] |
||
777 | cmp eax,512 |
||
778 | jb flnsa_1 |
||
779 | sub eax,512 |
||
780 | mov [esp+12],eax |
||
781 | mov eax,[esp+16] |
||
782 | add eax,512 |
||
783 | mov [esp+16],eax |
||
784 | jmp frnewds_1 |
||
785 | |||
786 | frnewds_2: |
||
787 | add ebx,1 |
||
788 | mov edi,ebx ; find free cluster in FAT |
||
789 | shl edi,1 |
||
381 | serge | 790 | add edi,FLOPPY_FAT |
1 | ha | 791 | mov eax,[edi] |
792 | and eax,4095 |
||
793 | jnz frnewds_2 |
||
794 | mov [edx],bx ; save next cluster pos. to prev cl. |
||
795 | mov edx,edi ; next save pos abs mem add |
||
796 | ret |
||
797 | |||
798 | flnsa_1: |
||
799 | mov [edi],word 4095 ; mark end of file - last cluster |
||
800 | cmp [save_root_flag],1 |
||
801 | jne flnsa_2 |
||
802 | call save_flp_root |
||
803 | cmp [FDC_Status],0 |
||
804 | jne fdc_status_error_7 |
||
805 | flnsa_2: |
||
806 | call save_flp_fat |
||
807 | cmp [FDC_Status],0 |
||
808 | jne fdc_status_error_7 |
||
809 | frnoreadds_1: |
||
810 | pop edi esi edx ecx ebx eax |
||
811 | add esp,32 |
||
812 | mov eax,0 |
||
813 | mov [flp_status],0 |
||
814 | ret |
||
815 | |||
816 | fdc_status_error_7_1: |
||
817 | cmp [FDC_Status],0 |
||
131 | diamond | 818 | je fdc_status_error_8 |
1 | ha | 819 | fdc_status_error_7: |
820 | pop edi esi edx ecx ebx eax |
||
821 | add esp,32 |
||
822 | jmp fdc_status_error_1 |
||
823 | |||
824 | save_chs_sector: |
||
825 | call calculate_chs |
||
826 | call WriteSectWithRetr |
||
827 | ret |
||
131 | diamond | 828 | |
1 | ha | 829 | calculate_chs: |
830 | mov bl,[FDD_Track] |
||
131 | diamond | 831 | mov [old_track],bl |
1 | ha | 832 | mov ebx,18 |
833 | xor edx,edx |
||
834 | div ebx |
||
835 | inc edx |
||
836 | mov [FDD_Sector],dl |
||
837 | xor edx,edx |
||
838 | mov ebx,2 |
||
839 | div ebx |
||
840 | mov [FDD_Track],al |
||
841 | mov [FDD_Head],0 |
||
842 | cmp edx,0 |
||
843 | je no_head_2 |
||
844 | inc [FDD_Head] |
||
845 | no_head_2: |
||
846 | mov dl,[old_track] |
||
847 | cmp dl,[FDD_Track] |
||
848 | je no_seek_track_1 |
||
849 | call SeekTrack |
||
850 | no_seek_track_1: |
||
851 | ret |
||
852 | |||
131 | diamond | 853 | |
1 | ha | 854 | get_cluster_of_a_path_flp: |
855 | ;--------------------------------------------------------- |
||
856 | ; input : EBX = pointer to a path string |
||
857 | ; (example: the path "/files/data/document" become |
||
858 | ; "files......data.......document...0" |
||
859 | ; '.' = space char |
||
860 | ; '0' = char(0) (ASCII=0) !!! ) |
||
861 | ; output : if (CARRY=1) -> ERROR in the PATH |
||
862 | ; if (CARRY=0) -> EAX=cluster |
||
863 | ;--------------------------------------------------------- |
||
864 | |||
865 | push edx |
||
866 | mov edx,ebx |
||
867 | |||
868 | search_end_of_path_flp: |
||
869 | cmp [save_flag],0 |
||
870 | jne search_end_of_path_flp_1 |
||
871 | cmp byte [edx],0 |
||
872 | je found_end_of_path_flp |
||
873 | jmp search_end_of_path_flp_2 |
||
874 | search_end_of_path_flp_1: |
||
875 | cmp byte [edx+12],0 |
||
876 | je found_end_of_path_flp |
||
877 | search_end_of_path_flp_2: |
||
878 | inc edx ; '/' |
||
879 | call analyze_directory_flp |
||
880 | jc directory_not_found_flp |
||
881 | |||
882 | mov eax,[ebx+20-2] ; read the HIGH 16bit cluster field |
||
883 | mov ax,[ebx+26] ; read the LOW 16bit cluster field |
||
884 | and eax,0xfff ;[fatMASK] |
||
885 | add edx,11 ; 8+3 (name+extension) |
||
886 | jmp search_end_of_path_flp |
||
887 | |||
888 | found_end_of_path_flp: |
||
889 | inc edx |
||
890 | mov [pointer_file_name_flp],edx |
||
891 | pop edx |
||
892 | clc ; no errors |
||
893 | ret |
||
894 | |||
895 | directory_not_found_flp: |
||
896 | pop edx |
||
897 | stc ; errors occour |
||
898 | ret |
||
131 | diamond | 899 | |
1 | ha | 900 | analyze_directory_flp: |
901 | ;-------------------------------- |
||
902 | ; input : EAX = first cluster of the directory |
||
903 | ; EBX = pointer to filename |
||
904 | ; output : IF CARRY=0 EAX = sector where th file is found |
||
905 | ; EBX = pointer in buffer |
||
906 | ; [buffer .. buffer+511] |
||
907 | ; ECX,EDX,EDI,EDI not changed |
||
908 | ; IF CARRY=1 |
||
909 | ;-------------------------------- |
||
910 | push ebx ;[esp+16] |
||
911 | push ecx |
||
912 | push edx |
||
913 | push esi |
||
914 | push edi |
||
131 | diamond | 915 | |
916 | |||
1 | ha | 917 | adr56_flp: |
918 | mov [clust_tmp_flp],eax |
||
919 | add eax,31 |
||
920 | pusha |
||
921 | call read_chs_sector |
||
922 | popa |
||
923 | cmp [FDC_Status],0 |
||
924 | jne not_found_file_analyze_flp |
||
925 | |||
926 | mov ecx,512/32 |
||
380 | serge | 927 | mov ebx,FDD_BUFF |
131 | diamond | 928 | |
1 | ha | 929 | adr1_analyze_flp: |
930 | mov esi,edx ;[esp+16] |
||
931 | mov edi,ebx |
||
932 | cld |
||
933 | push ecx |
||
934 | mov ecx,11 |
||
935 | rep cmpsb |
||
936 | pop ecx |
||
937 | je found_file_analyze_flp |
||
131 | diamond | 938 | |
1 | ha | 939 | add ebx,32 |
940 | loop adr1_analyze_flp |
||
131 | diamond | 941 | |
1 | ha | 942 | mov eax,[clust_tmp_flp] |
943 | shl eax,1 ;find next cluster from FAT |
||
381 | serge | 944 | add eax,FLOPPY_FAT |
1 | ha | 945 | mov eax,[eax] |
946 | and eax,4095 |
||
947 | cmp eax,0x0ff8 |
||
948 | jb adr56_flp |
||
131 | diamond | 949 | not_found_file_analyze_flp: |
1 | ha | 950 | pop edi |
951 | pop esi |
||
952 | pop edx |
||
953 | pop ecx |
||
954 | add esp,4 |
||
955 | stc ;file not found |
||
956 | ret |
||
131 | diamond | 957 | |
1 | ha | 958 | found_file_analyze_flp: |
959 | pop edi |
||
960 | pop esi |
||
961 | pop edx |
||
962 | pop ecx |
||
963 | add esp,4 |
||
964 | clc ;file found |
||
965 | ret |
||
131 | diamond | 966 | |
967 | |||
1 | ha | 968 | analyze_directory_to_write_flp: |
969 | ;-------------------------------- |
||
970 | ; input : EAX = first cluster of the directory |
||
971 | ; output : IF CARRY=0 EAX = sector where the file is found |
||
972 | ; EBX = pointer in buffer |
||
973 | ; [buffer .. buffer+511] |
||
974 | ; ECX,EDX,EDI,EDI not changed |
||
975 | ; IF CARRY=1 |
||
976 | ;-------------------------------- |
||
131 | diamond | 977 | |
1 | ha | 978 | push ecx |
979 | push edx |
||
980 | push esi |
||
131 | diamond | 981 | |
1 | ha | 982 | adr561: |
983 | mov [clust_tmp_flp],eax |
||
984 | add eax,31 |
||
985 | pusha |
||
131 | diamond | 986 | call read_chs_sector |
1 | ha | 987 | popa |
988 | cmp [FDC_Status],0 |
||
989 | jne error_found_file_analyze1 |
||
990 | |||
991 | mov ecx,512/32 |
||
380 | serge | 992 | mov ebx,FDD_BUFF |
131 | diamond | 993 | |
1 | ha | 994 | adr1_analyze1: |
995 | cmp byte [ebx],0x00 |
||
996 | je found_file_analyze1 |
||
997 | cmp byte [ebx],0xe5 |
||
998 | je found_file_analyze1 |
||
131 | diamond | 999 | |
1 | ha | 1000 | avanti: |
1001 | add ebx,32 |
||
1002 | loop adr1_analyze1 |
||
131 | diamond | 1003 | |
1 | ha | 1004 | mov eax,[clust_tmp_flp] |
1005 | shl eax,1 ;find next cluster from FAT |
||
381 | serge | 1006 | add eax,FLOPPY_FAT |
1 | ha | 1007 | mov eax,[eax] |
1008 | and eax,4095 |
||
1009 | cmp eax,0x0ff8 |
||
1010 | jb adr561 |
||
131 | diamond | 1011 | |
1 | ha | 1012 | call get_free_FAT ;this block of code add a new cluster |
1013 | ;for the directory because the directory |
||
1014 | ;is full |
||
1015 | |||
1016 | mov [edi],word 0x0fff |
||
131 | diamond | 1017 | |
1 | ha | 1018 | mov eax,[clust_tmp_flp] |
1019 | shl eax,1 ;find next cluster from FAT |
||
381 | serge | 1020 | add eax,FLOPPY_FAT |
1021 | sub edi,FLOPPY_FAT |
||
1 | ha | 1022 | mov [eax],di |
1023 | |||
1024 | pusha |
||
1025 | mov ecx,512/4 |
||
1026 | xor eax,eax |
||
380 | serge | 1027 | mov edi,FDD_BUFF |
1 | ha | 1028 | cld |
1029 | rep stosd |
||
1030 | popa |
||
1031 | |||
1032 | mov eax,edi |
||
1033 | add eax,31 |
||
1034 | pusha |
||
131 | diamond | 1035 | call save_chs_sector |
1 | ha | 1036 | popa |
1037 | cmp [FDC_Status],0 |
||
1038 | jne error_found_file_analyze1 |
||
380 | serge | 1039 | mov ebx,FDD_BUFF |
1 | ha | 1040 | |
1041 | found_file_analyze1: |
||
131 | diamond | 1042 | |
1 | ha | 1043 | pop esi |
1044 | pop edx |
||
1045 | pop ecx |
||
1046 | clc ;file found |
||
1047 | ret |
||
1048 | |||
1049 | error_found_file_analyze1: |
||
1050 | pop esi |
||
1051 | pop edx |
||
1052 | pop ecx |
||
1053 | stc |
||
131 | diamond | 1054 | ret |
1055 | |||
1 | ha | 1056 | get_free_FAT_flp: |
1057 | ;------------------------------------------ |
||
1058 | ; input : EAX = # cluster for start the searching |
||
1059 | ; output : EAX = # first cluster found free |
||
1060 | ;------------------------------------------- |
||
1061 | push ebx |
||
131 | diamond | 1062 | |
1 | ha | 1063 | mov ebx,1 |
1064 | check_new_flp: |
||
1065 | add ebx,1 |
||
1066 | mov edi,ebx ; find free cluster in FAT |
||
1067 | shl edi,1 |
||
381 | serge | 1068 | add edi,FLOPPY_FAT |
1 | ha | 1069 | mov eax,[edi] |
1070 | and eax,4095 |
||
1071 | cmp eax,0x0 |
||
1072 | jnz check_new_flp |
||
1073 | |||
1074 | pop ebx |
||
1075 | ret |
||
71 | diamond | 1076 | |
1077 | ; \begin{diamond} |
||
83 | diamond | 1078 | fat_find_lfn: |
71 | diamond | 1079 | ; in: esi->name |
83 | diamond | 1080 | ; [esp+4] = next |
1081 | ; [esp+8] = first |
||
1082 | ; [esp+C]... - possibly parameters for first and next |
||
71 | diamond | 1083 | ; out: CF=1 - file not found |
83 | diamond | 1084 | ; else CF=0, esi->next name component, edi->direntry |
75 | diamond | 1085 | pusha |
83 | diamond | 1086 | lea eax, [esp+0Ch+20h] |
1087 | call dword [eax-4] |
||
1088 | jc .reterr |
||
75 | diamond | 1089 | sub esp, 262*2 ; reserve place for LFN |
1090 | mov ebp, esp |
||
1091 | push 0 ; for fat_get_name: read ASCII name |
||
83 | diamond | 1092 | .l1: |
75 | diamond | 1093 | call fat_get_name |
83 | diamond | 1094 | jc .l2 |
75 | diamond | 1095 | call fat_compare_name |
1096 | jz .found |
||
83 | diamond | 1097 | .l2: |
1098 | lea eax, [esp+0Ch+20h+262*2+4] |
||
1099 | call dword [eax-8] |
||
1100 | jnc .l1 |
||
75 | diamond | 1101 | add esp, 262*2+4 |
83 | diamond | 1102 | .reterr: |
1103 | stc |
||
75 | diamond | 1104 | popa |
1105 | ret |
||
71 | diamond | 1106 | .found: |
83 | diamond | 1107 | add esp, 262*2+4 |
1108 | ; if this is LFN entry, advance to true entry |
||
75 | diamond | 1109 | cmp byte [edi+11], 0xF |
83 | diamond | 1110 | jnz @f |
1111 | lea eax, [esp+0Ch+20h] |
||
1112 | call dword [eax-8] |
||
1113 | jc .reterr |
||
1114 | @@: |
||
1115 | add esp, 8 ; CF=0 |
||
1116 | push esi |
||
1117 | push edi |
||
1118 | popa |
||
1119 | ret |
||
1120 | |||
171 | diamond | 1121 | uglobal |
1122 | ; this is for delete support |
||
1123 | fd_prev_sector dd ? |
||
1124 | fd_prev_prev_sector dd ? |
||
1125 | endg |
||
1126 | |||
83 | diamond | 1127 | flp_root_next: |
465 | serge | 1128 | cmp edi, OS_BASE+0xD200-0x20 |
83 | diamond | 1129 | jae @f |
75 | diamond | 1130 | add edi, 0x20 |
83 | diamond | 1131 | ret ; CF=0 |
1132 | @@: |
||
1133 | ; read next sector |
||
1134 | inc dword [eax] |
||
1135 | cmp dword [eax], 14 |
||
1136 | jae flp_root_first.readerr |
||
171 | diamond | 1137 | push [fd_prev_sector] |
1138 | pop [fd_prev_prev_sector] |
||
1139 | push eax |
||
1140 | mov eax, [eax] |
||
1141 | add eax, 19-1 |
||
1142 | mov [fd_prev_sector], eax |
||
1143 | pop eax |
||
83 | diamond | 1144 | flp_root_first: |
1145 | mov eax, [eax] |
||
1146 | pusha |
||
1147 | add eax, 19 |
||
75 | diamond | 1148 | call read_chs_sector |
83 | diamond | 1149 | popa |
75 | diamond | 1150 | cmp [FDC_Status], 0 |
83 | diamond | 1151 | jnz .readerr |
380 | serge | 1152 | mov edi, FDD_BUFF |
83 | diamond | 1153 | ret ; CF=0 |
1154 | .readerr: |
||
1155 | stc |
||
1156 | ret |
||
1157 | |||
1158 | flp_rootmem_first: |
||
380 | serge | 1159 | mov edi, FLOPPY_BUFF |
83 | diamond | 1160 | clc |
1161 | ret |
||
1162 | flp_rootmem_next: |
||
1163 | add edi, 0x20 |
||
380 | serge | 1164 | cmp edi, FLOPPY_BUFF+14*0x200 |
83 | diamond | 1165 | cmc |
1166 | flp_rootmem_next_write: |
||
1167 | flp_rootmem_begin_write: |
||
1168 | flp_rootmem_end_write: |
||
1169 | ret |
||
1170 | flp_rootmem_extend_dir: |
||
1171 | stc |
||
1172 | ret |
||
1173 | |||
1174 | flp_notroot_next: |
||
465 | serge | 1175 | cmp edi, OS_BASE+0xD200-0x20 |
83 | diamond | 1176 | jae flp_notroot_next_sector |
1177 | add edi, 0x20 |
||
1178 | ret ; CF=0 |
||
1179 | flp_notroot_next_sector: |
||
1180 | push ecx |
||
1181 | mov ecx, [eax] |
||
171 | diamond | 1182 | push [fd_prev_sector] |
1183 | pop [fd_prev_prev_sector] |
||
1184 | add ecx, 31 |
||
1185 | mov [fd_prev_sector], ecx |
||
381 | serge | 1186 | mov ecx, [(ecx-31)*2+FLOPPY_FAT] |
83 | diamond | 1187 | and ecx, 0xFFF |
1188 | cmp ecx, 2849 |
||
1189 | jae flp_notroot_first.err2 |
||
1190 | mov [eax], ecx |
||
1191 | pop ecx |
||
1192 | flp_notroot_first: |
||
1193 | mov eax, [eax] |
||
1194 | cmp eax, 2 |
||
1195 | jb .err |
||
1196 | cmp eax, 2849 |
||
1197 | jae .err |
||
1198 | pusha |
||
75 | diamond | 1199 | add eax, 31 |
83 | diamond | 1200 | call read_chs_sector |
1201 | popa |
||
380 | serge | 1202 | mov edi, FDD_BUFF |
83 | diamond | 1203 | cmp [FDC_Status], 0 |
1204 | jnz .err |
||
1205 | ret ; CF=0 |
||
1206 | .err2: |
||
1207 | pop ecx |
||
1208 | .err: |
||
1209 | stc |
||
75 | diamond | 1210 | ret |
83 | diamond | 1211 | flp_notroot_begin_write: |
1212 | pusha |
||
1213 | mov eax, [eax] |
||
1214 | add eax, 31 |
||
1215 | call read_chs_sector |
||
1216 | popa |
||
1217 | ret |
||
1218 | flp_notroot_end_write: |
||
1219 | pusha |
||
1220 | mov eax, [eax] |
||
1221 | add eax, 31 |
||
1222 | call save_chs_sector |
||
1223 | popa |
||
1224 | ret |
||
1225 | flp_notroot_next_write: |
||
465 | serge | 1226 | cmp edi, OS_BASE+0xD200 |
83 | diamond | 1227 | jae @f |
1228 | ret |
||
1229 | @@: |
||
1230 | call flp_notroot_end_write |
||
1231 | jmp flp_notroot_next_sector |
||
1232 | flp_notroot_extend_dir: |
||
1233 | ; find free cluster in FAT |
||
1234 | pusha |
||
1235 | xor eax, eax |
||
381 | serge | 1236 | mov edi, FLOPPY_FAT |
83 | diamond | 1237 | mov ecx, 2849 |
1238 | repnz scasw |
||
1239 | jnz .notfound |
||
1240 | mov word [edi-2], 0xFFF ; mark as last cluster |
||
381 | serge | 1241 | sub edi, FLOPPY_FAT |
83 | diamond | 1242 | shr edi, 1 |
1243 | dec edi |
||
1244 | mov eax, [esp+28] |
||
1245 | mov ecx, [eax] |
||
381 | serge | 1246 | mov [FLOPPY_FAT+ecx*2], di |
83 | diamond | 1247 | mov [eax], edi |
1248 | xor eax, eax |
||
380 | serge | 1249 | mov edi, FDD_BUFF |
83 | diamond | 1250 | mov ecx, 128 |
1251 | rep stosd |
||
1252 | popa |
||
1253 | call flp_notroot_end_write |
||
380 | serge | 1254 | mov edi, FDD_BUFF |
83 | diamond | 1255 | clc |
1256 | ret |
||
1257 | .notfound: |
||
1258 | popa |
||
1259 | stc |
||
1260 | ret |
||
71 | diamond | 1261 | |
83 | diamond | 1262 | fd_find_lfn: |
1263 | ; in: esi->name |
||
1264 | ; out: CF=1 - file not found |
||
86 | diamond | 1265 | ; else CF=0 and edi->direntry, eax=directory cluster (0 for root) |
83 | diamond | 1266 | push esi edi |
1267 | push 0 |
||
1268 | push flp_root_first |
||
1269 | push flp_root_next |
||
1270 | .loop: |
||
1271 | call fat_find_lfn |
||
1272 | jc .notfound |
||
1273 | cmp byte [esi], 0 |
||
1274 | jz .found |
||
1275 | test byte [edi+11], 10h |
||
1276 | jz .notfound |
||
1277 | movzx eax, word [edi+26] ; cluster |
||
1278 | mov [esp+8], eax |
||
1279 | mov dword [esp+4], flp_notroot_first |
||
1280 | mov dword [esp], flp_notroot_next |
||
1281 | jmp .loop |
||
1282 | .notfound: |
||
1283 | add esp, 12 |
||
1284 | pop edi esi |
||
1285 | stc |
||
1286 | ret |
||
1287 | .found: |
||
86 | diamond | 1288 | mov eax, [esp+8] |
131 | diamond | 1289 | add eax, 31 |
1290 | cmp dword [esp], flp_root_next |
||
1291 | jnz @f |
||
1292 | add eax, -31+19 |
||
1293 | @@: |
||
83 | diamond | 1294 | add esp, 16 ; CF=0 |
1295 | pop esi |
||
1296 | ret |
||
1297 | |||
71 | diamond | 1298 | ;---------------------------------------------------------------- |
1299 | ; |
||
1300 | ; fs_FloppyRead - LFN variant for reading floppy |
||
1301 | ; |
||
1302 | ; esi points to filename |
||
1303 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
||
1304 | ; may be ebx=0 - start from first byte |
||
1305 | ; ecx number of bytes to read, 0+ |
||
1306 | ; edx mem location to return data |
||
1307 | ; |
||
77 | diamond | 1308 | ; ret ebx = bytes read or 0xffffffff file not found |
71 | diamond | 1309 | ; eax = 0 ok read or other = errormsg |
1310 | ; |
||
1311 | ;-------------------------------------------------------------- |
||
1312 | fs_FloppyRead: |
||
75 | diamond | 1313 | call read_flp_fat |
1314 | cmp byte [esi], 0 |
||
1315 | jnz @f |
||
1316 | or ebx, -1 |
||
1317 | mov eax, 10 ; access denied |
||
1318 | ret |
||
71 | diamond | 1319 | @@: |
75 | diamond | 1320 | push edi |
1321 | call fd_find_lfn |
||
1322 | jnc .found |
||
1323 | pop edi |
||
1324 | or ebx, -1 |
||
1325 | mov eax, 5 ; file not found |
||
1326 | ret |
||
71 | diamond | 1327 | .found: |
75 | diamond | 1328 | test ebx, ebx |
1329 | jz .l1 |
||
1330 | cmp dword [ebx+4], 0 |
||
1331 | jz @f |
||
77 | diamond | 1332 | xor ebx, ebx |
71 | diamond | 1333 | .reteof: |
75 | diamond | 1334 | mov eax, 6 ; EOF |
1335 | pop edi |
||
1336 | ret |
||
71 | diamond | 1337 | @@: |
75 | diamond | 1338 | mov ebx, [ebx] |
71 | diamond | 1339 | .l1: |
77 | diamond | 1340 | push ecx edx |
1341 | push 0 |
||
1342 | mov eax, [edi+28] |
||
1343 | sub eax, ebx |
||
1344 | jb .eof |
||
1345 | cmp eax, ecx |
||
1346 | jae @f |
||
1347 | mov ecx, eax |
||
1348 | mov byte [esp], 6 ; EOF |
||
1349 | @@: |
||
75 | diamond | 1350 | movzx edi, word [edi+26] |
71 | diamond | 1351 | .new: |
75 | diamond | 1352 | jecxz .done |
1353 | test edi, edi |
||
1354 | jz .eof |
||
1355 | cmp edi, 0xFF8 |
||
1356 | jae .eof |
||
113 | diamond | 1357 | sub ebx, 512 |
1358 | jae .skip |
||
77 | diamond | 1359 | lea eax, [edi+31] |
75 | diamond | 1360 | pusha |
1361 | call read_chs_sector |
||
1362 | popa |
||
1363 | cmp [FDC_Status], 0 |
||
1364 | jnz .err |
||
380 | serge | 1365 | lea eax, [FDD_BUFF+ebx+512] |
75 | diamond | 1366 | neg ebx |
1367 | push ecx |
||
1368 | cmp ecx, ebx |
||
1369 | jbe @f |
||
1370 | mov ecx, ebx |
||
71 | diamond | 1371 | @@: |
75 | diamond | 1372 | mov ebx, edx |
1373 | call memmove |
||
1374 | add edx, ecx |
||
1375 | sub [esp], ecx |
||
1376 | pop ecx |
||
1377 | xor ebx, ebx |
||
71 | diamond | 1378 | .skip: |
381 | serge | 1379 | movzx edi, word [edi*2+FLOPPY_FAT] |
75 | diamond | 1380 | jmp .new |
71 | diamond | 1381 | .done: |
77 | diamond | 1382 | mov ebx, edx |
1383 | pop eax edx ecx edi |
||
1384 | sub ebx, edx |
||
75 | diamond | 1385 | ret |
71 | diamond | 1386 | .eof: |
77 | diamond | 1387 | mov ebx, edx |
1388 | pop eax edx ecx |
||
75 | diamond | 1389 | jmp .reteof |
71 | diamond | 1390 | .err: |
77 | diamond | 1391 | mov ebx, edx |
1392 | pop eax edx ecx edi |
||
1393 | sub ebx, edx |
||
83 | diamond | 1394 | mov al, 11 |
75 | diamond | 1395 | ret |
1396 | |||
1397 | ;---------------------------------------------------------------- |
||
1398 | ; |
||
1399 | ; fs_FloppyReadFolder - LFN variant for reading floppy folders |
||
1400 | ; |
||
1401 | ; esi points to filename |
||
78 | diamond | 1402 | ; ebx pointer to structure: 32-bit number = first wanted block, 0+ |
1403 | ; & flags (bitfields) |
||
1404 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
||
75 | diamond | 1405 | ; ecx number of blocks to read, 0+ |
1406 | ; edx mem location to return data |
||
1407 | ; |
||
77 | diamond | 1408 | ; ret ebx = blocks read or 0xffffffff folder not found |
75 | diamond | 1409 | ; eax = 0 ok read or other = errormsg |
1410 | ; |
||
1411 | ;-------------------------------------------------------------- |
||
1412 | fs_FloppyReadFolder: |
||
1413 | call read_flp_fat |
||
1414 | push edi |
||
1415 | cmp byte [esi], 0 |
||
1416 | jz .root |
||
1417 | call fd_find_lfn |
||
1418 | jnc .found |
||
1419 | pop edi |
||
1420 | or ebx, -1 |
||
1421 | mov eax, ERROR_FILE_NOT_FOUND |
||
1422 | ret |
||
1423 | .found: |
||
1424 | test byte [edi+11], 0x10 ; do not allow read files |
||
1425 | jnz .found_dir |
||
1426 | pop edi |
||
1427 | or ebx, -1 |
||
1428 | mov eax, ERROR_ACCESS_DENIED |
||
1429 | ret |
||
1430 | .found_dir: |
||
1431 | movzx eax, word [edi+26] |
||
1432 | add eax, 31 |
||
1433 | push 0 |
||
1434 | jmp .doit |
||
1435 | .root: |
||
1436 | mov eax, 19 |
||
1437 | push 14 |
||
1438 | .doit: |
||
1439 | push ecx ebp |
||
1440 | sub esp, 262*2 ; reserve space for LFN |
||
1441 | mov ebp, esp |
||
78 | diamond | 1442 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE names |
1443 | mov ebx, [ebx] |
||
75 | diamond | 1444 | ; init header |
1445 | push eax ecx |
||
1446 | mov edi, edx |
||
1447 | mov ecx, 32/4 |
||
1448 | xor eax, eax |
||
1449 | rep stosd |
||
1450 | pop ecx eax |
||
1451 | mov byte [edx], 1 ; version |
||
1452 | mov esi, edi ; esi points to BDFE |
||
1453 | .main_loop: |
||
1454 | pusha |
||
1455 | call read_chs_sector |
||
1456 | popa |
||
1457 | cmp [FDC_Status], 0 |
||
1458 | jnz .error |
||
380 | serge | 1459 | mov edi, FDD_BUFF |
75 | diamond | 1460 | push eax |
1461 | .l1: |
||
1462 | call fat_get_name |
||
1463 | jc .l2 |
||
1464 | cmp byte [edi+11], 0xF |
||
1465 | jnz .do_bdfe |
||
1466 | add edi, 0x20 |
||
465 | serge | 1467 | cmp edi, OS_BASE+0xD200 |
75 | diamond | 1468 | jb .do_bdfe |
1469 | pop eax |
||
1470 | inc eax |
||
1471 | dec byte [esp+262*2+12] |
||
1472 | jz .done |
||
1473 | jns @f |
||
1474 | ; read next sector from FAT |
||
381 | serge | 1475 | mov eax, [(eax-31-1)*2+FLOPPY_FAT] |
75 | diamond | 1476 | and eax, 0xFFF |
1477 | cmp eax, 0xFF8 |
||
1478 | jae .done |
||
1479 | add eax, 31 |
||
1480 | mov byte [esp+262*2+12], 0 |
||
1481 | @@: |
||
1482 | pusha |
||
1483 | call read_chs_sector |
||
1484 | popa |
||
1485 | cmp [FDC_Status], 0 |
||
1486 | jnz .error |
||
380 | serge | 1487 | mov edi, FDD_BUFF |
75 | diamond | 1488 | push eax |
1489 | .do_bdfe: |
||
1490 | inc dword [edx+8] ; new file found |
||
1491 | dec ebx |
||
1492 | jns .l2 |
||
1493 | dec ecx |
||
1494 | js .l2 |
||
1495 | inc dword [edx+4] ; new file block copied |
||
1496 | call fat_entry_to_bdfe |
||
1497 | .l2: |
||
1498 | add edi, 0x20 |
||
465 | serge | 1499 | cmp edi, OS_BASE+0xD200 |
75 | diamond | 1500 | jb .l1 |
1501 | pop eax |
||
1502 | inc eax |
||
1503 | dec byte [esp+262*2+12] |
||
1504 | jz .done |
||
1505 | jns @f |
||
1506 | ; read next sector from FAT |
||
381 | serge | 1507 | mov eax, [(eax-31-1)*2+FLOPPY_FAT] |
75 | diamond | 1508 | and eax, 0xFFF |
1509 | cmp eax, 0xFF8 |
||
1510 | jae .done |
||
1511 | add eax, 31 |
||
1512 | mov byte [esp+262*2+12], 0 |
||
1513 | @@: |
||
1514 | jmp .main_loop |
||
1515 | .error: |
||
1516 | add esp, 262*2+4 |
||
1517 | pop ebp ecx edi edi |
||
1518 | or ebx, -1 |
||
1519 | mov eax, ERROR_FILE_NOT_FOUND |
||
1520 | ret |
||
1521 | .done: |
||
1522 | add esp, 262*2+4 |
||
1523 | pop ebp |
||
77 | diamond | 1524 | mov ebx, [edx+4] |
75 | diamond | 1525 | xor eax, eax |
1526 | dec ecx |
||
1527 | js @f |
||
1528 | mov al, ERROR_END_OF_FILE |
||
1529 | @@: |
||
1530 | pop ecx edi edi |
||
1531 | ret |
||
1532 | |||
83 | diamond | 1533 | ;---------------------------------------------------------------- |
1534 | ; |
||
1535 | ; fs_FloppyRewrite - LFN variant for writing sys floppy |
||
1536 | ; |
||
1537 | ; esi points to filename |
||
1538 | ; ebx ignored (reserved) |
||
1539 | ; ecx number of bytes to write, 0+ |
||
1540 | ; edx mem location to data |
||
1541 | ; |
||
1542 | ; ret ebx = number of written bytes |
||
1543 | ; eax = 0 ok read or other = errormsg |
||
1544 | ; |
||
1545 | ;-------------------------------------------------------------- |
||
1546 | @@: |
||
1547 | mov eax, ERROR_ACCESS_DENIED |
||
1548 | xor ebx, ebx |
||
1549 | ret |
||
1550 | fsfrfe2: |
||
1551 | popad |
||
1552 | fsfrfe: |
||
1553 | mov eax, 11 |
||
1554 | xor ebx, ebx |
||
1555 | ret |
||
1556 | |||
321 | diamond | 1557 | fs_FloppyCreateFolder: |
1558 | mov al, 1 |
||
1559 | jmp fs_FloppyRewrite.common |
||
1560 | |||
83 | diamond | 1561 | fs_FloppyRewrite: |
321 | diamond | 1562 | xor eax, eax |
1563 | .common: |
||
83 | diamond | 1564 | cmp byte [esi], 0 |
1565 | jz @b |
||
1566 | call read_flp_fat |
||
1567 | cmp [FDC_Status], 0 |
||
1568 | jnz fsfrfe |
||
1569 | pushad |
||
1570 | xor ebp, ebp |
||
1571 | push esi |
||
1572 | @@: |
||
1573 | lodsb |
||
1574 | test al, al |
||
1575 | jz @f |
||
1576 | cmp al, '/' |
||
1577 | jnz @b |
||
1578 | lea ebp, [esi-1] |
||
1579 | jmp @b |
||
1580 | @@: |
||
1581 | pop esi |
||
1582 | test ebp, ebp |
||
1583 | jnz .noroot |
||
1584 | call read_flp_root |
||
1585 | cmp [FDC_Status], 0 |
||
1586 | jnz fsfrfe2 |
||
1587 | push flp_rootmem_extend_dir |
||
1588 | push flp_rootmem_end_write |
||
1589 | push flp_rootmem_next_write |
||
1590 | push flp_rootmem_begin_write |
||
1591 | xor ebp, ebp |
||
1592 | push ebp |
||
1593 | push flp_rootmem_first |
||
1594 | push flp_rootmem_next |
||
1595 | jmp .common1 |
||
1596 | .noroot: |
||
335 | diamond | 1597 | mov eax, ERROR_ACCESS_DENIED |
1598 | cmp byte [ebp+1], 0 |
||
1599 | jz .ret1 |
||
83 | diamond | 1600 | ; check existence |
1601 | mov byte [ebp], 0 |
||
1602 | call fd_find_lfn |
||
1603 | mov byte [ebp], '/' |
||
1604 | lea esi, [ebp+1] |
||
1605 | jnc @f |
||
1606 | mov eax, ERROR_FILE_NOT_FOUND |
||
1607 | .ret1: |
||
1608 | mov [esp+28], eax |
||
1609 | popad |
||
1610 | xor ebx, ebx |
||
1611 | ret |
||
1612 | @@: |
||
1613 | test byte [edi+11], 0x10 ; must be directory |
||
1614 | mov eax, ERROR_ACCESS_DENIED |
||
1615 | jz .ret1 |
||
1616 | movzx ebp, word [edi+26] ; ebp=cluster |
||
1617 | mov eax, ERROR_FAT_TABLE |
||
1618 | cmp ebp, 2 |
||
1619 | jb .ret1 |
||
1620 | cmp ebp, 2849 |
||
1621 | jae .ret1 |
||
1622 | push flp_notroot_extend_dir |
||
1623 | push flp_notroot_end_write |
||
1624 | push flp_notroot_next_write |
||
1625 | push flp_notroot_begin_write |
||
1626 | push ebp |
||
1627 | push flp_notroot_first |
||
1628 | push flp_notroot_next |
||
1629 | .common1: |
||
1630 | call fat_find_lfn |
||
1631 | jc .notfound |
||
321 | diamond | 1632 | ; found |
91 | diamond | 1633 | test byte [edi+11], 10h |
321 | diamond | 1634 | jz .exists_file |
1635 | ; found directory; if we are creating directory, return OK, |
||
1636 | ; if we are creating file, say "access denied" |
||
1637 | add esp, 28 |
||
1638 | popad |
||
1639 | test al, al |
||
1640 | mov eax, ERROR_ACCESS_DENIED |
||
91 | diamond | 1641 | jz @f |
321 | diamond | 1642 | mov al, 0 |
1643 | @@: |
||
1644 | xor ebx, ebx |
||
1645 | ret |
||
1646 | .exists_file: |
||
1647 | ; found file; if we are creating directory, return "access denied", |
||
1648 | ; if we are creating file, delete existing file and continue |
||
1649 | cmp byte [esp+28+28], 0 |
||
1650 | jz @f |
||
91 | diamond | 1651 | add esp, 28 |
1652 | popad |
||
1653 | mov eax, ERROR_ACCESS_DENIED |
||
1654 | xor ebx, ebx |
||
1655 | ret |
||
1656 | @@: |
||
1657 | ; delete FAT chain |
||
83 | diamond | 1658 | push edi |
1659 | xor eax, eax |
||
1660 | mov dword [edi+28], eax ; zero size |
||
1661 | xchg ax, word [edi+26] ; start cluster |
||
1662 | test eax, eax |
||
1663 | jz .done1 |
||
1664 | @@: |
||
1665 | cmp eax, 0xFF8 |
||
1666 | jae .done1 |
||
321 | diamond | 1667 | lea edi, [FLOPPY_FAT + eax*2] ; position in FAT |
83 | diamond | 1668 | xor eax, eax |
1669 | xchg ax, [edi] |
||
1670 | jmp @b |
||
1671 | .done1: |
||
1672 | pop edi |
||
1673 | call get_time_for_file |
||
1674 | mov [edi+22], ax |
||
1675 | call get_date_for_file |
||
1676 | mov [edi+24], ax |
||
1677 | mov [edi+18], ax |
||
1678 | or byte [edi+11], 20h ; set 'archive' attribute |
||
1679 | jmp .doit |
||
1680 | .notfound: |
||
1681 | ; file is not found; generate short name |
||
1682 | call fat_name_is_legal |
||
1683 | jc @f |
||
1684 | add esp, 28 |
||
1685 | popad |
||
1686 | mov eax, ERROR_FILE_NOT_FOUND |
||
1687 | xor ebx, ebx |
||
1688 | ret |
||
1689 | @@: |
||
1690 | sub esp, 12 |
||
1691 | mov edi, esp |
||
1692 | call fat_gen_short_name |
||
1693 | .test_short_name_loop: |
||
1694 | push esi edi ecx |
||
1695 | mov esi, edi |
||
1696 | lea eax, [esp+12+12+8] |
||
1697 | mov [eax], ebp |
||
1698 | call dword [eax-4] |
||
1699 | jc .found |
||
1700 | .test_short_name_entry: |
||
1701 | cmp byte [edi+11], 0xF |
||
1702 | jz .test_short_name_cont |
||
1703 | mov ecx, 11 |
||
1704 | push esi edi |
||
1705 | repz cmpsb |
||
1706 | pop edi esi |
||
1707 | jz .short_name_found |
||
1708 | .test_short_name_cont: |
||
1709 | lea eax, [esp+12+12+8] |
||
1710 | call dword [eax-8] |
||
1711 | jnc .test_short_name_entry |
||
1712 | jmp .found |
||
1713 | .short_name_found: |
||
1714 | pop ecx edi esi |
||
1715 | call fat_next_short_name |
||
1716 | jnc .test_short_name_loop |
||
1717 | .disk_full: |
||
1718 | add esp, 12+28 |
||
1719 | popa |
||
1720 | mov eax, ERROR_DISK_FULL |
||
1721 | xor ebx, ebx |
||
1722 | ret |
||
1723 | .found: |
||
1724 | pop ecx edi esi |
||
1725 | ; now find space in directory |
||
1726 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
||
1727 | mov al, '~' |
||
1728 | push ecx edi |
||
1729 | mov ecx, 8 |
||
1730 | repnz scasb |
||
1731 | push 1 |
||
1732 | pop eax ; 1 entry |
||
1733 | jnz .notilde |
||
1734 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
||
1735 | xor eax, eax |
||
1736 | @@: |
||
1737 | cmp byte [esi], 0 |
||
1738 | jz @f |
||
1739 | inc esi |
||
1740 | inc eax |
||
1741 | jmp @b |
||
1742 | @@: |
||
1743 | sub esi, eax |
||
1744 | add eax, 12+13 |
||
1745 | mov ecx, 13 |
||
1746 | push edx |
||
1747 | cdq |
||
1748 | div ecx |
||
1749 | pop edx |
||
1750 | .notilde: |
||
1751 | push -1 |
||
1752 | push -1 |
||
1753 | ; find |
||
1754 | xor ecx, ecx |
||
1755 | push eax |
||
1756 | lea eax, [esp+12+8+12+8] |
||
1757 | mov [eax], ebp |
||
1758 | call dword [eax-4] |
||
1759 | pop eax |
||
1760 | jnc .scan_dir |
||
1761 | .fsfrfe3: |
||
1762 | add esp, 8+8+12+28 |
||
1763 | popad |
||
1764 | mov eax, 11 |
||
1765 | xor ebx, ebx |
||
1766 | ret |
||
1767 | .scan_dir: |
||
1768 | cmp byte [edi], 0 |
||
1769 | jz .free |
||
1770 | cmp byte [edi], 0xE5 |
||
1771 | jz .free |
||
1772 | xor ecx, ecx |
||
1773 | .scan_cont: |
||
1774 | push eax |
||
1775 | lea eax, [esp+12+8+12+8] |
||
1776 | call dword [eax-8] |
||
1777 | pop eax |
||
1778 | jnc .scan_dir |
||
1779 | cmp [FDC_Status], 0 |
||
1780 | jnz .fsfrfe3 |
||
1781 | push eax |
||
1782 | lea eax, [esp+12+8+12+8] |
||
1783 | call dword [eax+16] ; extend directory |
||
1784 | pop eax |
||
1785 | jnc .scan_dir |
||
1786 | add esp, 8+8+12+28 |
||
1787 | popad |
||
1788 | mov eax, ERROR_DISK_FULL |
||
1789 | xor ebx, ebx |
||
1790 | ret |
||
1791 | .free: |
||
1792 | test ecx, ecx |
||
1793 | jnz @f |
||
1794 | mov [esp], edi |
||
1795 | mov ecx, [esp+8+8+12+8] |
||
1796 | mov [esp+4], ecx |
||
1797 | xor ecx, ecx |
||
1798 | @@: |
||
1799 | inc ecx |
||
1800 | cmp ecx, eax |
||
1801 | jb .scan_cont |
||
1802 | ; found! |
||
1803 | ; calculate name checksum |
||
1804 | push esi ecx |
||
1805 | mov esi, [esp+8+8] |
||
1806 | mov ecx, 11 |
||
1807 | xor eax, eax |
||
1808 | @@: |
||
1809 | ror al, 1 |
||
1810 | add al, [esi] |
||
1811 | inc esi |
||
1812 | loop @b |
||
1813 | pop ecx esi |
||
1814 | pop edi |
||
1815 | pop dword [esp+8+12+8] |
||
1816 | ; edi points to first entry in free chunk |
||
1817 | dec ecx |
||
1818 | jz .nolfn |
||
1819 | push esi |
||
1820 | push eax |
||
1821 | lea eax, [esp+8+8+12+8] |
||
1822 | call dword [eax+4] ; begin write |
||
1823 | mov al, 40h |
||
1824 | .writelfn: |
||
1825 | or al, cl |
||
1826 | mov esi, [esp+4] |
||
1827 | push ecx |
||
1828 | dec ecx |
||
1829 | imul ecx, 13 |
||
1830 | add esi, ecx |
||
1831 | stosb |
||
1832 | mov cl, 5 |
||
1833 | call fs_RamdiskRewrite.read_symbols |
||
1834 | mov ax, 0xF |
||
1835 | stosw |
||
1836 | mov al, [esp+4] |
||
1837 | stosb |
||
1838 | mov cl, 6 |
||
1839 | call fs_RamdiskRewrite.read_symbols |
||
1840 | xor eax, eax |
||
1841 | stosw |
||
1842 | mov cl, 2 |
||
1843 | call fs_RamdiskRewrite.read_symbols |
||
1844 | pop ecx |
||
1845 | lea eax, [esp+8+8+12+8] |
||
1846 | call dword [eax+8] ; next write |
||
1847 | xor eax, eax |
||
1848 | loop .writelfn |
||
1849 | pop eax |
||
1850 | pop esi |
||
1851 | ; lea eax, [esp+8+12+8] |
||
1852 | ; call dword [eax+12] ; end write |
||
1853 | .nolfn: |
||
1854 | xchg esi, [esp] |
||
1855 | mov ecx, 11 |
||
1856 | rep movsb |
||
1857 | mov word [edi], 20h ; attributes |
||
1858 | sub edi, 11 |
||
1859 | pop esi ecx |
||
1860 | add esp, 12 |
||
1861 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
||
1862 | call get_time_for_file |
||
1863 | mov [edi+14], ax ; creation time |
||
1864 | mov [edi+22], ax ; last write time |
||
1865 | call get_date_for_file |
||
1866 | mov [edi+16], ax ; creation date |
||
1867 | mov [edi+24], ax ; last write date |
||
1868 | mov [edi+18], ax ; last access date |
||
1869 | and word [edi+20], 0 ; high word of cluster |
||
1870 | and word [edi+26], 0 ; low word of cluster - to be filled |
||
1871 | and dword [edi+28], 0 ; file size - to be filled |
||
321 | diamond | 1872 | cmp byte [esp+28+28], 0 |
1873 | jz .doit |
||
1874 | ; create directory |
||
1875 | mov byte [edi+11], 10h ; attributes: folder |
||
1876 | mov ecx, 32*2 |
||
1877 | mov edx, edi |
||
83 | diamond | 1878 | .doit: |
1879 | lea eax, [esp+8] |
||
1880 | call dword [eax+12] ; flush directory |
||
1881 | push ecx |
||
1882 | push edi |
||
133 | diamond | 1883 | push 0 |
83 | diamond | 1884 | mov esi, edx |
321 | diamond | 1885 | test ecx, ecx |
1886 | jz .done |
||
83 | diamond | 1887 | mov ecx, 2849 |
321 | diamond | 1888 | mov edi, FLOPPY_FAT |
83 | diamond | 1889 | push 0 ; first cluster |
1890 | .write_loop: |
||
1891 | ; allocate new cluster |
||
1892 | xor eax, eax |
||
1893 | repnz scasw |
||
1894 | mov al, ERROR_DISK_FULL |
||
1895 | jnz .ret |
||
1896 | dec edi |
||
1897 | dec edi |
||
465 | serge | 1898 | |
1899 | mov eax, edi |
||
1900 | sub eax, FLOPPY_FAT |
||
1901 | |||
83 | diamond | 1902 | shr eax, 1 ; eax = cluster |
1903 | mov word [edi], 0xFFF ; mark as last cluster |
||
133 | diamond | 1904 | xchg edi, [esp+4] |
83 | diamond | 1905 | cmp dword [esp], 0 |
1906 | jz .first |
||
1907 | stosw |
||
1908 | jmp @f |
||
1909 | .first: |
||
1910 | mov [esp], eax |
||
1911 | @@: |
||
133 | diamond | 1912 | mov edi, [esp+4] |
83 | diamond | 1913 | inc ecx |
1914 | ; write data |
||
1915 | push ecx edi |
||
1916 | mov ecx, 512 |
||
1917 | cmp dword [esp+20], ecx |
||
1918 | jae @f |
||
1919 | mov ecx, [esp+20] |
||
1920 | @@: |
||
380 | serge | 1921 | mov edi, FDD_BUFF |
321 | diamond | 1922 | cmp byte [esp+24+28+28], 0 |
1923 | jnz .writedir |
||
83 | diamond | 1924 | push ecx |
1925 | rep movsb |
||
1926 | pop ecx |
||
321 | diamond | 1927 | .writedircont: |
83 | diamond | 1928 | push ecx |
1929 | sub ecx, 512 |
||
1930 | neg ecx |
||
1931 | push eax |
||
1932 | xor eax, eax |
||
1933 | rep stosb |
||
1934 | pop eax |
||
1935 | add eax, 31 |
||
1936 | pusha |
||
1937 | call save_chs_sector |
||
1938 | popa |
||
1939 | pop ecx |
||
1940 | cmp [FDC_Status], 0 |
||
1941 | jnz .diskerr |
||
1942 | sub [esp+20], ecx |
||
1943 | pop edi ecx |
||
1944 | jnz .write_loop |
||
1945 | .done: |
||
1946 | xor eax, eax |
||
1947 | .ret: |
||
1948 | pop ebx edi edi ecx |
||
1949 | mov [esp+28+28], eax |
||
1950 | lea eax, [esp+8] |
||
1951 | call dword [eax+4] |
||
1952 | mov [edi+26], bx |
||
1953 | mov ebx, esi |
||
1954 | sub ebx, edx |
||
1955 | mov [edi+28], ebx |
||
1956 | call dword [eax+12] |
||
1957 | mov [esp+28+16], ebx |
||
1958 | test ebp, ebp |
||
1959 | jnz @f |
||
1960 | call save_flp_root |
||
1961 | @@: |
||
1962 | add esp, 28 |
||
1963 | cmp [FDC_Status], 0 |
||
1964 | jnz .err3 |
||
1965 | call save_flp_fat |
||
1966 | cmp [FDC_Status], 0 |
||
1967 | jnz .err3 |
||
1968 | popa |
||
1969 | ret |
||
1970 | .err3: |
||
1971 | popa |
||
1972 | mov al, 11 |
||
1973 | xor ebx, ebx |
||
1974 | ret |
||
1975 | .diskerr: |
||
1976 | sub esi, ecx |
||
1977 | mov eax, 11 |
||
1978 | pop edi ecx |
||
1979 | jmp .ret |
||
321 | diamond | 1980 | .writedir: |
1981 | push ecx |
||
1982 | mov ecx, 32/4 |
||
1983 | push ecx esi |
||
1984 | rep movsd |
||
1985 | pop esi ecx |
||
1986 | mov dword [edi-32], '. ' |
||
1987 | mov dword [edi-32+4], ' ' |
||
1988 | mov dword [edi-32+8], ' ' |
||
1989 | mov byte [edi-32+11], 10h |
||
1990 | mov word [edi-32+26], ax |
||
1991 | push esi |
||
1992 | rep movsd |
||
1993 | pop esi |
||
1994 | mov dword [edi-32], '.. ' |
||
1995 | mov dword [edi-32+4], ' ' |
||
1996 | mov dword [edi-32+8], ' ' |
||
1997 | mov byte [edi-32+11], 10h |
||
1998 | mov ecx, [esp+28+8] |
||
1999 | mov word [edi-32+26], cx |
||
2000 | pop ecx |
||
2001 | jmp .writedircont |
||
83 | diamond | 2002 | |
131 | diamond | 2003 | ;---------------------------------------------------------------- |
2004 | ; |
||
2005 | ; fs_FloppyWrite - LFN variant for writing to floppy |
||
2006 | ; |
||
2007 | ; esi points to filename |
||
2008 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
||
2009 | ; may be ebx=0 - start from first byte |
||
2010 | ; ecx number of bytes to write, 0+ |
||
2011 | ; edx mem location to data |
||
2012 | ; |
||
2013 | ; ret ebx = bytes written (maybe 0) |
||
2014 | ; eax = 0 ok write or other = errormsg |
||
2015 | ; |
||
2016 | ;-------------------------------------------------------------- |
||
2017 | |||
2018 | @@: |
||
2019 | push ERROR_ACCESS_DENIED |
||
2020 | fs_FloppyWrite.ret0: |
||
2021 | pop eax |
||
2022 | xor ebx, ebx |
||
2023 | ret |
||
2024 | |||
2025 | fs_FloppyWrite.ret11: |
||
2026 | push 11 |
||
2027 | jmp fs_FloppyWrite.ret0 |
||
2028 | |||
2029 | fs_FloppyWrite: |
||
2030 | cmp byte [esi], 0 |
||
2031 | jz @b |
||
2032 | call read_flp_fat |
||
2033 | cmp [FDC_Status], 0 |
||
2034 | jnz .ret11 |
||
2035 | pushad |
||
2036 | call fd_find_lfn |
||
2037 | jnc .found |
||
2038 | popad |
||
2039 | push ERROR_FILE_NOT_FOUND |
||
2040 | jmp .ret0 |
||
2041 | .found: |
||
2042 | ; FAT does not support files larger than 4GB |
||
2043 | test ebx, ebx |
||
2044 | jz .l1 |
||
2045 | cmp dword [ebx+4], 0 |
||
2046 | jz @f |
||
2047 | .eof: |
||
2048 | popad |
||
2049 | push ERROR_END_OF_FILE |
||
2050 | jmp .ret0 |
||
2051 | @@: |
||
2052 | mov ebx, [ebx] |
||
2053 | .l1: |
||
2054 | ; now edi points to direntry, ebx=start byte to write, |
||
2055 | ; ecx=number of bytes to write, edx=data pointer |
||
2056 | |||
2057 | ; extend file if needed |
||
2058 | add ecx, ebx |
||
2059 | jc .eof ; FAT does not support files larger than 4GB |
||
2060 | push eax ; save directory cluster |
||
2061 | push 0 ; return value=0 |
||
2062 | |||
2063 | call get_time_for_file |
||
2064 | mov [edi+22], ax ; last write time |
||
2065 | call get_date_for_file |
||
2066 | mov [edi+24], ax ; last write date |
||
2067 | mov [edi+18], ax ; last access date |
||
2068 | |||
2069 | push dword [edi+28] ; save current file size |
||
2070 | cmp ecx, [edi+28] |
||
2071 | jbe .length_ok |
||
2072 | cmp ecx, ebx |
||
2073 | jz .length_ok |
||
2074 | call floppy_extend_file |
||
2075 | jnc .length_ok |
||
2076 | mov [esp+4], eax |
||
2077 | ; floppy_extend_file can return two error codes: FAT table error or disk full. |
||
2078 | ; First case is fatal error, in second case we may write some data |
||
2079 | cmp al, ERROR_DISK_FULL |
||
2080 | jz .disk_full |
||
2081 | pop eax |
||
2082 | pop eax |
||
2083 | mov [esp+4+28], eax |
||
2084 | pop eax |
||
2085 | popad |
||
2086 | xor ebx, ebx |
||
2087 | ret |
||
2088 | .disk_full: |
||
2089 | ; correct number of bytes to write |
||
2090 | mov ecx, [edi+28] |
||
2091 | cmp ecx, ebx |
||
2092 | ja .length_ok |
||
2093 | .ret: |
||
2094 | pop eax |
||
2095 | pop eax |
||
2096 | mov [esp+4+28], eax ; eax=return value |
||
2097 | pop eax |
||
2098 | sub edx, [esp+20] |
||
2099 | mov [esp+16], edx ; ebx=number of written bytes |
||
2100 | popad |
||
2101 | ret |
||
2102 | .length_ok: |
||
2103 | ; save FAT & directory |
||
2104 | ; note that directory must be saved first because save_flp_fat uses buffer at 0xD000 |
||
2105 | mov esi, [edi+28] |
||
2106 | movzx edi, word [edi+26] ; starting cluster |
||
2107 | mov eax, [esp+8] |
||
2108 | pusha |
||
2109 | call save_chs_sector |
||
2110 | popa |
||
2111 | cmp [FDC_Status], 0 |
||
2112 | jnz .device_err |
||
2113 | call save_flp_fat |
||
2114 | cmp [FDC_Status], 0 |
||
2115 | jz @f |
||
2116 | .device_err: |
||
2117 | mov byte [esp+4], 11 |
||
2118 | jmp .ret |
||
2119 | @@: |
||
2120 | |||
2121 | ; now ebx=start pos, ecx=end pos, both lie inside file |
||
2122 | sub ecx, ebx |
||
2123 | jz .ret |
||
2124 | call SetUserInterrupts |
||
2125 | .write_loop: |
||
321 | diamond | 2126 | ; skip unmodified sectors |
2127 | cmp dword [esp], 0x200 |
||
2128 | jb .modify |
||
2129 | sub ebx, 0x200 |
||
2130 | jae .skip |
||
2131 | add ebx, 0x200 |
||
2132 | .modify: |
||
131 | diamond | 2133 | lea eax, [edi+31] ; current sector |
2134 | ; get length of data in current sector |
||
2135 | push ecx |
||
2136 | sub ebx, 0x200 |
||
2137 | jb .hasdata |
||
2138 | neg ebx |
||
2139 | xor ecx, ecx |
||
2140 | jmp @f |
||
2141 | .hasdata: |
||
2142 | neg ebx |
||
2143 | cmp ecx, ebx |
||
2144 | jbe @f |
||
2145 | mov ecx, ebx |
||
2146 | @@: |
||
2147 | ; load sector if needed |
||
2148 | cmp dword [esp+4], 0 ; we don't need to read uninitialized data |
||
2149 | jz .noread |
||
2150 | cmp ecx, 0x200 ; we don't need to read sector if it is fully rewritten |
||
2151 | jz .noread |
||
2152 | cmp ecx, esi ; (same for the last sector) |
||
2153 | jz .noread |
||
2154 | pusha |
||
2155 | call read_chs_sector |
||
2156 | popa |
||
2157 | cmp [FDC_Status], 0 |
||
2158 | jz @f |
||
2159 | .device_err2: |
||
2160 | pop ecx |
||
2161 | jmp .device_err |
||
2162 | @@: |
||
2163 | .noread: |
||
2164 | ; zero uninitialized data if file was extended (because floppy_extend_file does not this) |
||
2165 | push eax ecx edi |
||
2166 | xor eax, eax |
||
2167 | mov ecx, 0x200 |
||
2168 | sub ecx, [esp+4+12] |
||
2169 | jbe @f |
||
380 | serge | 2170 | mov edi, FDD_BUFF |
131 | diamond | 2171 | add edi, [esp+4+12] |
2172 | rep stosb |
||
2173 | @@: |
||
2174 | ; zero uninitialized data in the last sector |
||
2175 | mov ecx, 0x200 |
||
2176 | sub ecx, esi |
||
2177 | jbe @f |
||
380 | serge | 2178 | mov edi, FDD_BUFF |
131 | diamond | 2179 | add edi, esi |
2180 | rep stosb |
||
2181 | @@: |
||
2182 | pop edi ecx eax |
||
2183 | ; copy new data |
||
2184 | push eax |
||
2185 | mov eax, edx |
||
2186 | neg ebx |
||
2187 | jecxz @f |
||
380 | serge | 2188 | add ebx, FDD_BUFF+0x200 |
131 | diamond | 2189 | call memmove |
2190 | xor ebx, ebx |
||
2191 | @@: |
||
2192 | pop eax |
||
2193 | ; save sector |
||
2194 | pusha |
||
2195 | call save_chs_sector |
||
2196 | popa |
||
2197 | cmp [FDC_Status], 0 |
||
2198 | jnz .device_err2 |
||
2199 | add edx, ecx |
||
2200 | sub [esp], ecx |
||
2201 | pop ecx |
||
2202 | jz .done |
||
321 | diamond | 2203 | .skip: |
131 | diamond | 2204 | .next_cluster: |
381 | serge | 2205 | movzx edi, word [edi*2+FLOPPY_FAT] |
131 | diamond | 2206 | sub esi, 0x200 |
2207 | jae @f |
||
2208 | xor esi, esi |
||
2209 | @@: |
||
2210 | sub dword [esp], 0x200 |
||
2211 | jae .write_loop |
||
2212 | and dword [esp], 0 |
||
2213 | jmp .write_loop |
||
2214 | .done: |
||
2215 | mov [fdc_irq_func], fdc_null |
||
2216 | jmp .ret |
||
2217 | |||
2218 | floppy_extend_file.zero_size: |
||
2219 | xor eax, eax |
||
2220 | jmp floppy_extend_file.start_extend |
||
2221 | |||
2222 | ; extends file on floppy to given size (new data area is undefined) |
||
2223 | ; in: edi->direntry, ecx=new size |
||
133 | diamond | 2224 | ; out: CF=0 => OK, eax=0 |
131 | diamond | 2225 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL) |
2226 | floppy_extend_file: |
||
2227 | push ecx |
||
2228 | ; find the last cluster of file |
||
2229 | movzx eax, word [edi+26] ; first cluster |
||
2230 | mov ecx, [edi+28] |
||
2231 | jecxz .zero_size |
||
2232 | @@: |
||
2233 | sub ecx, 0x200 |
||
2234 | jbe @f |
||
381 | serge | 2235 | mov eax, [eax*2+FLOPPY_FAT] |
131 | diamond | 2236 | and eax, 0xFFF |
2237 | jz .fat_err |
||
2238 | cmp eax, 0xFF8 |
||
2239 | jb @b |
||
2240 | .fat_err: |
||
2241 | pop ecx |
||
2242 | push ERROR_FAT_TABLE |
||
2243 | pop eax |
||
2244 | stc |
||
2245 | ret |
||
2246 | @@: |
||
2247 | push eax |
||
381 | serge | 2248 | mov eax, [eax*2+FLOPPY_FAT] |
131 | diamond | 2249 | and eax, 0xFFF |
2250 | cmp eax, 0xFF8 |
||
2251 | pop eax |
||
2252 | jb .fat_err |
||
2253 | ; set length to full number of sectors |
||
2254 | sub [edi+28], ecx |
||
2255 | .start_extend: |
||
2256 | pop ecx |
||
2257 | ; now do extend |
||
2258 | push edx esi |
||
381 | serge | 2259 | mov esi, FLOPPY_FAT+2*2 ; start scan from cluster 2 |
131 | diamond | 2260 | mov edx, 2847 ; number of clusters to scan |
2261 | .extend_loop: |
||
2262 | cmp [edi+28], ecx |
||
2263 | jae .extend_done |
||
2264 | ; add new sector |
||
2265 | push ecx |
||
2266 | push edi |
||
2267 | .scan: |
||
2268 | mov ecx, edx |
||
2269 | mov edi, esi |
||
2270 | jecxz .disk_full |
||
2271 | push eax |
||
2272 | xor eax, eax |
||
2273 | repnz scasw |
||
2274 | pop eax |
||
2275 | jnz .disk_full |
||
2276 | mov word [edi-2], 0xFFF |
||
2277 | mov esi, edi |
||
2278 | mov edx, ecx |
||
381 | serge | 2279 | sub edi, FLOPPY_FAT |
131 | diamond | 2280 | shr edi, 1 |
2281 | dec edi ; now edi=new cluster |
||
2282 | test eax, eax |
||
2283 | jz .first_cluster |
||
381 | serge | 2284 | mov [FLOPPY_FAT+eax*2], di |
131 | diamond | 2285 | jmp @f |
2286 | .first_cluster: |
||
2287 | pop eax ; eax->direntry |
||
2288 | push eax |
||
2289 | mov [eax+26], di |
||
2290 | @@: |
||
2291 | mov eax, edi ; eax=new cluster |
||
2292 | pop edi ; edi->direntry |
||
2293 | pop ecx ; ecx=required size |
||
2294 | add dword [edi+28], 0x200 |
||
2295 | jmp .extend_loop |
||
2296 | .extend_done: |
||
2297 | mov [edi+28], ecx |
||
2298 | pop esi edx |
||
133 | diamond | 2299 | xor eax, eax ; CF=0 |
131 | diamond | 2300 | ret |
2301 | .disk_full: |
||
2302 | pop edi ecx |
||
2303 | pop esi edx |
||
2304 | stc |
||
2305 | push ERROR_DISK_FULL |
||
2306 | pop eax |
||
2307 | ret |
||
2308 | |||
133 | diamond | 2309 | ;---------------------------------------------------------------- |
2310 | ; |
||
2311 | ; fs_FloppySetFileEnd - set end of file on floppy |
||
2312 | ; |
||
2313 | ; esi points to filename |
||
2314 | ; ebx points to 64-bit number = new file size |
||
2315 | ; ecx ignored (reserved) |
||
2316 | ; edx ignored (reserved) |
||
2317 | ; |
||
2318 | ; ret eax = 0 ok or other = errormsg |
||
2319 | ; |
||
2320 | ;-------------------------------------------------------------- |
||
2321 | fs_FloppySetFileEnd: |
||
2322 | call read_flp_fat |
||
2323 | cmp [FDC_Status], 0 |
||
2324 | jnz ret11 |
||
2325 | cmp byte [esi], 0 |
||
2326 | jnz @f |
||
2327 | .access_denied: |
||
2328 | push ERROR_ACCESS_DENIED |
||
2329 | jmp .ret |
||
2330 | @@: |
||
2331 | push edi |
||
2332 | call fd_find_lfn |
||
2333 | jnc @f |
||
2334 | pop edi |
||
2335 | push ERROR_FILE_NOT_FOUND |
||
2336 | .ret: |
||
2337 | pop eax |
||
2338 | jmp .doret |
||
2339 | @@: |
||
2340 | ; must not be directory |
||
2341 | test byte [edi+11], 10h |
||
2342 | jz @f |
||
2343 | pop edi |
||
2344 | jmp .access_denied |
||
2345 | @@: |
||
2346 | ; file size must not exceed 4 Gb |
||
2347 | cmp dword [ebx+4], 0 |
||
2348 | jz @f |
||
2349 | pop edi |
||
2350 | push ERROR_END_OF_FILE |
||
2351 | jmp .ret |
||
2352 | @@: |
||
2353 | push eax |
||
2354 | ; set file modification date/time to current |
||
2355 | call fat_update_datetime |
||
2356 | mov eax, [ebx] |
||
2357 | cmp eax, [edi+28] |
||
2358 | jb .truncate |
||
2359 | ja .expand |
||
2360 | pop eax |
||
2361 | pushad |
||
2362 | call save_chs_sector |
||
2363 | popad |
||
2364 | pop edi |
||
2365 | xor eax, eax |
||
2366 | cmp [FDC_Status], 0 |
||
2367 | jz @f |
||
2368 | mov al, 11 |
||
2369 | @@: |
||
2370 | .doret: |
||
2371 | mov [fdc_irq_func], fdc_null |
||
2372 | ret |
||
2373 | .expand: |
||
2374 | push ecx |
||
2375 | push dword [edi+28] ; save old size |
||
2376 | mov ecx, eax |
||
2377 | call floppy_extend_file |
||
2378 | push eax ; return code |
||
2379 | jnc .expand_ok |
||
2380 | cmp al, ERROR_DISK_FULL |
||
2381 | jz .disk_full |
||
2382 | pop eax ecx ecx edi edi |
||
2383 | jmp .doret |
||
2384 | .device_err: |
||
2385 | pop eax |
||
2386 | .device_err2: |
||
2387 | pop ecx ecx eax edi |
||
2388 | push 11 |
||
2389 | jmp .ret |
||
2390 | .disk_full: |
||
2391 | .expand_ok: |
||
2392 | ; save directory & FAT |
||
2393 | mov eax, [edi+28] |
||
2394 | xchg eax, [esp+12] |
||
2395 | movzx edi, word [edi+26] |
||
2396 | pusha |
||
2397 | call save_chs_sector |
||
2398 | popa |
||
2399 | cmp [FDC_Status], 0 |
||
2400 | jnz .device_err |
||
2401 | call save_flp_fat |
||
2402 | cmp [FDC_Status], 0 |
||
2403 | jnz .device_err |
||
2404 | call SetUserInterrupts |
||
2405 | ; now zero new data |
||
2406 | ; edi = current cluster, [esp+12]=new size, [esp+4]=old size, [esp]=return code |
||
2407 | .zero_loop: |
||
2408 | sub dword [esp+4], 0x200 |
||
2409 | jae .next_cluster |
||
2410 | cmp dword [esp+4], -0x200 |
||
2411 | jz .noread |
||
2412 | lea eax, [edi+31] |
||
2413 | pusha |
||
2414 | call read_chs_sector |
||
2415 | popa |
||
2416 | cmp [FDC_Status], 0 |
||
2417 | jnz .err_next |
||
2418 | .noread: |
||
2419 | mov ecx, [esp+4] |
||
2420 | neg ecx |
||
2421 | push edi |
||
380 | serge | 2422 | mov edi, FDD_BUFF+0x200 |
133 | diamond | 2423 | add edi, [esp+8] |
2424 | xor eax, eax |
||
2425 | mov [esp+8], eax |
||
2426 | rep stosb |
||
2427 | pop edi |
||
2428 | lea eax, [edi+31] |
||
2429 | pusha |
||
2430 | call save_chs_sector |
||
2431 | popa |
||
2432 | cmp [FDC_Status], 0 |
||
2433 | jz .next_cluster |
||
2434 | .err_next: |
||
2435 | mov byte [esp], 11 |
||
2436 | .next_cluster: |
||
2437 | sub dword [esp+12], 0x200 |
||
2438 | jbe .expand_done |
||
381 | serge | 2439 | movzx edi, word [FLOPPY_FAT+edi*2] |
133 | diamond | 2440 | jmp .zero_loop |
2441 | .expand_done: |
||
2442 | pop eax ecx ecx edi edi |
||
2443 | jmp .doret |
||
2444 | .truncate: |
||
2445 | mov [edi+28], eax |
||
2446 | push ecx |
||
2447 | movzx ecx, word [edi+26] |
||
2448 | test eax, eax |
||
2449 | jz .zero_size |
||
2450 | ; find new last sector |
||
2451 | @@: |
||
2452 | sub eax, 0x200 |
||
2453 | jbe @f |
||
381 | serge | 2454 | movzx ecx, word [FLOPPY_FAT+ecx*2] |
133 | diamond | 2455 | jmp @b |
2456 | @@: |
||
2457 | ; we will zero data at the end of last sector - remember it |
||
2458 | push ecx |
||
2459 | ; terminate FAT chain |
||
381 | serge | 2460 | lea ecx, [FLOPPY_FAT+ecx+ecx] |
133 | diamond | 2461 | push dword [ecx] |
2462 | mov word [ecx], 0xFFF |
||
2463 | pop ecx |
||
2464 | and ecx, 0xFFF |
||
2465 | jmp .delete |
||
2466 | .zero_size: |
||
2467 | and word [edi+26], 0 |
||
2468 | push 0 |
||
2469 | .delete: |
||
2470 | ; delete FAT chain starting with ecx |
||
2471 | ; mark all clusters as free |
||
2472 | cmp ecx, 0xFF8 |
||
2473 | jae .deleted |
||
381 | serge | 2474 | lea ecx, [FLOPPY_FAT+ecx+ecx] |
133 | diamond | 2475 | push dword [ecx] |
2476 | and word [ecx], 0 |
||
2477 | pop ecx |
||
2478 | and ecx, 0xFFF |
||
2479 | jmp .delete |
||
2480 | .deleted: |
||
2481 | mov edi, [edi+28] |
||
2482 | ; save directory & FAT |
||
2483 | mov eax, [esp+8] |
||
2484 | pusha |
||
2485 | call save_chs_sector |
||
2486 | popa |
||
2487 | cmp [FDC_Status], 0 |
||
2488 | jnz .device_err2 |
||
2489 | call save_flp_fat |
||
2490 | cmp [FDC_Status], 0 |
||
2491 | jnz .device_err2 |
||
2492 | ; zero last sector, ignore errors |
||
2493 | pop eax |
||
2494 | add eax, 31 |
||
2495 | and edi, 0x1FF |
||
2496 | jz .truncate_done |
||
2497 | call SetUserInterrupts |
||
2498 | pusha |
||
2499 | call read_chs_sector |
||
2500 | popa |
||
380 | serge | 2501 | add edi, FDD_BUFF |
2502 | mov ecx, FDD_BUFF+0x200 |
||
133 | diamond | 2503 | sub ecx, edi |
2504 | push eax |
||
2505 | xor eax, eax |
||
2506 | rep stosb |
||
2507 | pop eax |
||
2508 | pusha |
||
2509 | call save_chs_sector |
||
2510 | popa |
||
2511 | .truncate_done: |
||
2512 | pop ecx eax edi |
||
2513 | xor eax, eax |
||
2514 | jmp .doret |
||
2515 | |||
86 | diamond | 2516 | fs_FloppyGetFileInfo: |
2517 | call read_flp_fat |
||
2518 | cmp [FDC_Status], 0 |
||
2519 | jnz ret11 |
||
2520 | cmp byte [esi], 0 |
||
2521 | jnz @f |
||
2522 | mov eax, 2 ; unsupported |
||
2523 | ret |
||
2524 | @@: |
||
2525 | push edi |
||
2526 | call fd_find_lfn |
||
2527 | jmp fs_GetFileInfo_finish |
||
2528 | |||
2529 | ret11: |
||
2530 | mov eax, 11 |
||
2531 | ret |
||
2532 | |||
2533 | fs_FloppySetFileInfo: |
||
2534 | call read_flp_fat |
||
2535 | cmp [FDC_Status], 0 |
||
2536 | jnz ret11 |
||
2537 | cmp byte [esi], 0 |
||
2538 | jnz @f |
||
2539 | mov eax, 2 ; unsupported |
||
2540 | ret |
||
2541 | @@: |
||
2542 | push edi |
||
2543 | call fd_find_lfn |
||
2544 | jnc @f |
||
2545 | pop edi |
||
2546 | mov eax, ERROR_FILE_NOT_FOUND |
||
2547 | ret |
||
2548 | @@: |
||
2549 | push eax |
||
2550 | call bdfe_to_fat_entry |
||
2551 | pop eax |
||
2552 | pusha |
||
2553 | call save_chs_sector |
||
2554 | popa |
||
2555 | pop edi |
||
2556 | xor eax, eax |
||
2557 | cmp [FDC_Status], 0 |
||
2558 | jz @f |
||
2559 | mov al, 11 |
||
2560 | @@: |
||
2561 | ret |
||
2562 | |||
321 | diamond | 2563 | if 0 |
91 | diamond | 2564 | ;---------------------------------------------------------------- |
2565 | ; |
||
2566 | ; fs_FloppyExecute - LFN variant for executing from floppy |
||
2567 | ; |
||
2568 | ; esi points to floppy filename (e.g. 'dir1/name') |
||
2569 | ; ebp points to full filename (e.g. '/fd/1/dir1/name') |
||
2570 | ; dword [ebx] = flags |
||
2571 | ; dword [ebx+4] = cmdline |
||
2572 | ; |
||
2573 | ; ret ebx,edx destroyed |
||
2574 | ; eax > 0 - PID, < 0 - error |
||
2575 | ; |
||
2576 | ;-------------------------------------------------------------- |
||
2577 | fs_FloppyExecute: |
||
2578 | mov edx, [ebx] |
||
2579 | mov ebx, [ebx+4] |
||
2580 | test ebx, ebx |
||
2581 | jz @f |
||
465 | serge | 2582 | ; add ebx, std_application_base_address |
91 | diamond | 2583 | @@: |
2584 | |||
2585 | ;---------------------------------------------------------------- |
||
2586 | ; |
||
2587 | ; fs_FloppyExecute.flags - second entry |
||
2588 | ; |
||
2589 | ; esi points to floppy filename (kernel address) |
||
2590 | ; ebp points to full filename |
||
2591 | ; edx flags |
||
2592 | ; ebx cmdline (kernel address) |
||
2593 | ; |
||
2594 | ; ret eax > 0 - PID, < 0 - error |
||
2595 | ; |
||
2596 | ;-------------------------------------------------------------- |
||
2597 | |||
2598 | .flags: |
||
2599 | call read_flp_fat |
||
2600 | cmp byte [esi], 0 |
||
2601 | jnz @f |
||
2602 | ; cannot execute root! |
||
2603 | mov eax, -ERROR_ACCESS_DENIED |
||
2604 | ret |
||
2605 | @@: |
||
2606 | push edi |
||
2607 | call fd_find_lfn |
||
2608 | jnc .found |
||
2609 | pop edi |
||
2610 | mov eax, -ERROR_FILE_NOT_FOUND |
||
2611 | ret |
||
2612 | .found: |
||
2613 | movzx eax, word [edi+26] ; cluster |
||
2614 | push eax |
||
2615 | push dword [edi+28] ; size |
||
2616 | push .DoRead |
||
2617 | call fs_execute |
||
2618 | add esp, 12 |
||
2619 | pop edi |
||
2620 | ret |
||
2621 | |||
2622 | .DoRead: |
||
2623 | ; read next block |
||
2624 | ; in: eax->parameters, edi->buffer |
||
2625 | ; out: eax = error code |
||
2626 | pushad |
||
2627 | cmp dword [eax], 0 ; file size |
||
2628 | jz .eof |
||
2629 | mov eax, [eax+4] ; cluster |
||
2630 | add eax, 31 |
||
2631 | call read_chs_sector |
||
2632 | cmp [FDC_Status], 0 |
||
2633 | jnz .err |
||
2634 | pop edi |
||
380 | serge | 2635 | mov esi, FDD_BUFF |
91 | diamond | 2636 | push edi |
2637 | mov ecx, 512/4 |
||
2638 | rep movsd |
||
2639 | mov eax, [esp+28] |
||
2640 | mov ecx, [eax] |
||
2641 | sub ecx, 512 |
||
2642 | jae @f |
||
2643 | add edi, ecx |
||
2644 | neg ecx |
||
2645 | push eax |
||
2646 | xor eax, eax |
||
2647 | rep stosb |
||
2648 | pop eax |
||
2649 | @@: |
||
2650 | mov [eax], ecx |
||
2651 | mov edx, [eax+4] |
||
381 | serge | 2652 | mov dx, [edx*2+FLOPPY_FAT] |
91 | diamond | 2653 | mov [eax+4], dx ; high word is already zero |
2654 | popad |
||
2655 | xor eax, eax |
||
2656 | ret |
||
2657 | .eof: |
||
2658 | popad |
||
2659 | mov eax, 6 |
||
2660 | ret |
||
2661 | .err: |
||
2662 | popad |
||
2663 | mov eax, 11 |
||
2664 | ret |
||
321 | diamond | 2665 | end if |
91 | diamond | 2666 | |
171 | diamond | 2667 | ;---------------------------------------------------------------- |
2668 | ; |
||
2669 | ; fs_FloppyDelete - delete file or empty folder from floppy |
||
2670 | ; |
||
2671 | ; esi points to filename |
||
2672 | ; |
||
2673 | ; ret eax = 0 ok or other = errormsg |
||
2674 | ; |
||
2675 | ;-------------------------------------------------------------- |
||
2676 | fs_FloppyDelete: |
||
2677 | call read_flp_fat |
||
2678 | cmp [FDC_Status], 0 |
||
2679 | jz @f |
||
2680 | push 11 |
||
2681 | jmp .pop_ret |
||
2682 | @@: |
||
2683 | cmp byte [esi], 0 |
||
2684 | jnz @f |
||
2685 | ; cannot delete root! |
||
2686 | .access_denied: |
||
2687 | push ERROR_ACCESS_DENIED |
||
2688 | .pop_ret: |
||
2689 | pop eax |
||
2690 | ret |
||
2691 | @@: |
||
2692 | and [fd_prev_sector], 0 |
||
2693 | and [fd_prev_prev_sector], 0 |
||
2694 | push edi |
||
2695 | call fd_find_lfn |
||
2696 | jnc .found |
||
2697 | pop edi |
||
2698 | push ERROR_FILE_NOT_FOUND |
||
2699 | jmp .pop_ret |
||
2700 | .found: |
||
2701 | cmp dword [edi], '. ' |
||
2702 | jz .access_denied2 |
||
2703 | cmp dword [edi], '.. ' |
||
2704 | jz .access_denied2 |
||
2705 | test byte [edi+11], 10h |
||
2706 | jz .dodel |
||
2707 | ; we can delete only empty folders! |
||
2708 | push eax |
||
2709 | movzx eax, word [edi+26] |
||
2710 | push ebx |
||
2711 | pusha |
||
2712 | add eax, 31 |
||
2713 | call read_chs_sector |
||
2714 | popa |
||
380 | serge | 2715 | mov ebx, FDD_BUFF + 2*0x20 |
171 | diamond | 2716 | .checkempty: |
2717 | cmp byte [ebx], 0 |
||
2718 | jz .empty |
||
2719 | cmp byte [ebx], 0xE5 |
||
2720 | jnz .notempty |
||
2721 | add ebx, 0x20 |
||
380 | serge | 2722 | cmp ebx, FDD_BUFF + 0x200 |
171 | diamond | 2723 | jb .checkempty |
2724 | movzx eax, word [FLOPPY_FAT + eax*2] |
||
2725 | pusha |
||
2726 | add eax, 31 |
||
2727 | call read_chs_sector |
||
2728 | popa |
||
380 | serge | 2729 | mov ebx, FDD_BUFF |
171 | diamond | 2730 | jmp .checkempty |
2731 | .notempty: |
||
2732 | pop ebx |
||
2733 | pop eax |
||
2734 | .access_denied2: |
||
2735 | pop edi |
||
2736 | jmp .access_denied |
||
2737 | .empty: |
||
2738 | pop ebx |
||
2739 | pop eax |
||
2740 | pusha |
||
2741 | call read_chs_sector |
||
2742 | popa |
||
2743 | .dodel: |
||
2744 | push eax |
||
2745 | movzx eax, word [edi+26] |
||
2746 | xchg eax, [esp] |
||
2747 | ; delete folder entry |
||
2748 | mov byte [edi], 0xE5 |
||
2749 | ; delete LFN (if present) |
||
2750 | .lfndel: |
||
380 | serge | 2751 | cmp edi, FDD_BUFF |
171 | diamond | 2752 | ja @f |
2753 | cmp [fd_prev_sector], 0 |
||
2754 | jz .lfndone |
||
2755 | push [fd_prev_sector] |
||
2756 | push [fd_prev_prev_sector] |
||
2757 | pop [fd_prev_sector] |
||
2758 | and [fd_prev_prev_sector], 0 |
||
2759 | pusha |
||
2760 | call save_chs_sector |
||
2761 | popa |
||
2762 | pop eax |
||
2763 | pusha |
||
2764 | call read_chs_sector |
||
2765 | popa |
||
380 | serge | 2766 | mov edi, FDD_BUFF+0x200 |
171 | diamond | 2767 | @@: |
2768 | sub edi, 0x20 |
||
2769 | cmp byte [edi], 0xE5 |
||
2770 | jz .lfndone |
||
2771 | cmp byte [edi+11], 0xF |
||
2772 | jnz .lfndone |
||
2773 | mov byte [edi], 0xE5 |
||
2774 | jmp .lfndel |
||
2775 | .lfndone: |
||
2776 | pusha |
||
2777 | call save_chs_sector |
||
2778 | popa |
||
2779 | ; delete FAT chain |
||
2780 | pop eax |
||
2781 | test eax, eax |
||
2782 | jz .done |
||
2783 | @@: |
||
2784 | lea eax, [FLOPPY_FAT + eax*2] |
||
2785 | push dword [eax] |
||
2786 | and word [eax], 0 |
||
2787 | pop eax |
||
2788 | and eax, 0xFFF |
||
2789 | jnz @b |
||
2790 | .done: |
||
2791 | call save_flp_fat |
||
2792 | pop edi |
||
2793 | xor eax, eax |
||
2794 | ret |
||
2795 | |||
78 | diamond | 2796 | ; \end{diamond}>>=>=>->->->-> |