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Rev | Author | Line No. | Line |
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5578 | Pathoswith | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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6468 | pathoswith | 3 | ;; Copyright (C) KolibriOS team 2004-2016. All rights reserved. ;; |
4 | ;; Distributed under terms of the GNU General Public License. ;; |
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5578 | Pathoswith | 5 | ;; ;; |
6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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2288 | clevermous | 7 | |
8 | $Revision: 7136 $ |
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9 | |||
6468 | pathoswith | 10 | ; FAT external functions |
11 | ; in: |
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12 | ; ebx -> parameter structure of sysfunc 70 |
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13 | ; ebp -> FAT structure |
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6471 | pathoswith | 14 | ; esi -> path string in UTF-8 |
6468 | pathoswith | 15 | ; out: |
16 | ; eax, ebx = return values for sysfunc 70 |
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17 | iglobal |
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18 | align 4 |
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19 | fat_user_functions: |
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20 | dd fat_free |
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21 | dd (fat_user_functions_end - fat_user_functions - 4) / 4 |
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22 | dd fat_Read |
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23 | dd fat_ReadFolder |
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24 | dd fat_CreateFile |
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25 | dd fat_Write |
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26 | dd fat_SetFileEnd |
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27 | dd fat_GetFileInfo |
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28 | dd fat_SetFileInfo |
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29 | dd 0 |
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30 | dd fat_Delete |
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31 | dd fat_CreateFolder |
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6917 | pathoswith | 32 | dd fat_Rename |
6468 | pathoswith | 33 | fat_user_functions_end: |
34 | endg |
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35 | |||
7136 | dunkaist | 36 | cache_max = 1919 ; max. is 1919*512+0x610000=0x6ffe00 |
2288 | clevermous | 37 | |
38 | PUSHAD_EAX equ [esp+28] |
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39 | PUSHAD_ECX equ [esp+24] |
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40 | PUSHAD_EDX equ [esp+20] |
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41 | PUSHAD_EBX equ [esp+16] |
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42 | PUSHAD_EBP equ [esp+8] |
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43 | PUSHAD_ESI equ [esp+4] |
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44 | PUSHAD_EDI equ [esp+0] |
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45 | |||
2643 | clevermous | 46 | ; Internal data for every FAT partition. |
3742 | clevermous | 47 | struct FAT PARTITION |
6468 | pathoswith | 48 | fs_type db ? |
49 | fat_change db ? ; 1=fat has changed |
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6917 | pathoswith | 50 | createOption db ? |
51 | rb 1 |
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6468 | pathoswith | 52 | Lock MUTEX ; currently operations with one partition |
5578 | Pathoswith | 53 | ; can not be executed in parallel since the legacy code is not ready |
6468 | pathoswith | 54 | SECTORS_PER_FAT dd ? |
55 | NUMBER_OF_FATS dd ? |
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56 | SECTORS_PER_CLUSTER dd ? |
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57 | BYTES_PER_SECTOR dd ? ; Note: if BPS <> 512 need lots of changes |
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58 | ROOT_CLUSTER dd ? ; first rootdir cluster |
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59 | FAT_START dd ? ; start of fat table |
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60 | ROOT_START dd ? ; start of rootdir (only fat16) |
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61 | ROOT_SECTORS dd ? ; count of rootdir sectors (only fat16) |
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62 | DATA_START dd ? ; start of data area (=first cluster 2) |
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63 | LAST_CLUSTER dd ? ; last availabe cluster |
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64 | ADR_FSINFO dd ? ; used only by fat32 |
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65 | fatRESERVED dd ? |
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66 | fatBAD dd ? |
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67 | fatEND dd ? |
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68 | fatMASK dd ? |
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69 | fatStartScan dd ? |
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70 | cluster_tmp dd ? ; used by analyze_directory and analyze_directory_to_write |
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71 | longname_sec1 dd ? ; used by analyze_directory to save 2 previous |
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72 | longname_sec2 dd ? ; directory sectors for delete long filename |
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73 | fat_in_cache dd ? |
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4273 | clevermous | 74 | ; For FAT16/FAT32, this points to 512-byte buffer for the current sector of FAT. |
75 | ; For FAT12, the entire FAT structure is read |
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76 | ; and unpacked from 12bit per cluster to word per cluster. |
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77 | ; Note: work with unpacked copy of FAT12 means |
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78 | ; additional memory and additional code for packing/unpacking. |
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79 | ; I'm not sure that the economy justifies the cost, but anyway, |
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80 | ; there is how work was done before my edits, and I'm just keeping the principle. |
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6468 | pathoswith | 81 | fat_cache_ptr dd ? |
82 | fat12_unpacked_ptr dd ? |
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6868 | pathoswith | 83 | volumeLabel rb 12 |
6468 | pathoswith | 84 | buffer rb 512 |
85 | fsinfo_buffer rb 512 |
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2643 | clevermous | 86 | ends |
87 | |||
2288 | clevermous | 88 | uglobal |
89 | align 4 |
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6468 | pathoswith | 90 | partition_count dd ? ; partitions found by set_FAT32_variables |
91 | hd_error dd ? |
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92 | hd_setup dd ? |
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93 | hd_wait_timeout dd ? |
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94 | cache_search_start dd ? ; used by find_empty_slot |
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5578 | Pathoswith | 95 | Sector512: ; label for dev_hdcd.inc |
96 | buffer: |
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97 | rb 512 |
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2288 | clevermous | 98 | endg |
99 | |||
2643 | clevermous | 100 | ; these labels are located before the main function to make |
101 | ; most of jumps to these be short |
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102 | fat_create_partition.free_return0: |
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103 | mov eax, ebp |
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104 | call free |
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105 | pop ebp |
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106 | fat_create_partition.return0: |
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107 | xor eax, eax |
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108 | ret |
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6867 | pathoswith | 109 | |
2643 | clevermous | 110 | fat_create_partition: |
5089 | clevermous | 111 | cmp dword [esi+DISK.MediaInfo.SectorSize], 512 |
112 | jnz .return0 |
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2643 | clevermous | 113 | ; bootsector must have been successfully read |
3742 | clevermous | 114 | cmp dword [esp+4], 0 |
2643 | clevermous | 115 | jnz .return0 |
116 | ; bootsector signature must be correct |
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117 | cmp word [ebx+0x1fe], 0xaa55 |
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118 | jnz .return0 |
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119 | ; sectors per cluster must be nonzero |
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120 | cmp byte [ebx+0xd], 0 |
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121 | jz .return0 |
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122 | ; bytes per sector must be 0x200 |
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123 | cmp word [ebx+0xb], 0x200 |
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124 | jnz .return0 |
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125 | ; number of fats must be nonzero |
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126 | cmp byte [ebx+0x10], 0 |
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127 | jz .return0 |
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128 | ; The only reason to be invalid partition now is FAT12. Since the test for |
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129 | ; FAT size requires knowledge of some calculated values, which are also used |
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130 | ; in the normal operation, let's hope for the best and allocate data now; if |
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131 | ; it will prove wrong, just deallocate it. |
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3598 | clevermous | 132 | movi eax, sizeof.FAT |
2643 | clevermous | 133 | call malloc |
134 | test eax, eax |
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135 | jz .return0 |
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3742 | clevermous | 136 | mov ecx, dword [ebp+PARTITION.FirstSector] |
137 | mov dword [eax+FAT.FirstSector], ecx |
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138 | mov ecx, dword [ebp+PARTITION.FirstSector+4] |
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139 | mov dword [eax+FAT.FirstSector+4], ecx |
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140 | mov ecx, dword [ebp+PARTITION.Length] |
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141 | mov dword [eax+FAT.Length], ecx |
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142 | mov ecx, dword [ebp+PARTITION.Length+4] |
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143 | mov dword [eax+FAT.Length+4], ecx |
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144 | mov ecx, [ebp+PARTITION.Disk] |
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145 | mov [eax+FAT.Disk], ecx |
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146 | mov [eax+FAT.FSUserFunctions], fat_user_functions |
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2643 | clevermous | 147 | or [eax+FAT.fat_in_cache], -1 |
148 | mov [eax+FAT.fat_change], 0 |
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149 | push ebp |
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150 | mov ebp, eax |
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151 | lea ecx, [ebp+FAT.Lock] |
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152 | call mutex_init |
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153 | movzx eax, word [ebx+0xe] ; sectors reserved |
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154 | mov [ebp+FAT.FAT_START], eax |
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155 | movzx eax, byte [ebx+0xd] ; sectors per cluster |
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156 | mov [ebp+FAT.SECTORS_PER_CLUSTER], eax |
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157 | movzx ecx, word [ebx+0xb] ; bytes per sector |
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158 | mov [ebp+FAT.BYTES_PER_SECTOR], ecx |
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159 | movzx eax, word [ebx+0x11] ; count of rootdir entries (=0 fat32) |
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160 | shl eax, 5 ; mul 32 |
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161 | dec ecx |
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162 | add eax, ecx ; round up if not equal count |
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163 | inc ecx ; bytes per sector |
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164 | xor edx, edx |
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165 | div ecx |
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166 | mov [ebp+FAT.ROOT_SECTORS], eax ; count of rootdir sectors |
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167 | movzx eax, word [ebx+0x16] ; sectors per fat <65536 |
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168 | test eax, eax |
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169 | jnz @f |
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170 | mov eax, [ebx+0x24] ; sectors per fat |
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2288 | clevermous | 171 | @@: |
2643 | clevermous | 172 | mov [ebp+FAT.SECTORS_PER_FAT], eax |
173 | movzx eax, byte [ebx+0x10] ; number of fats |
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174 | mov [ebp+FAT.NUMBER_OF_FATS], eax |
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4273 | clevermous | 175 | mul [ebp+FAT.SECTORS_PER_FAT] |
176 | test edx, edx |
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177 | jnz .free_return0 |
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2643 | clevermous | 178 | add eax, [ebp+FAT.FAT_START] |
4273 | clevermous | 179 | jc .free_return0 |
2643 | clevermous | 180 | mov [ebp+FAT.ROOT_START], eax ; rootdir = fat_start + fat_size * fat_count |
181 | add eax, [ebp+FAT.ROOT_SECTORS] ; rootdir sectors should be 0 on fat32 |
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4273 | clevermous | 182 | jc .free_return0 |
2643 | clevermous | 183 | mov [ebp+FAT.DATA_START], eax ; data area = rootdir + rootdir_size |
184 | movzx eax, word [ebx+0x13] ; total sector count <65536 |
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185 | test eax, eax |
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186 | jnz @f |
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187 | mov eax, [ebx+0x20] ; total sector count |
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188 | @@: |
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4273 | clevermous | 189 | cmp dword [ebp+FAT.Length+4], 0 |
190 | jnz @f |
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191 | cmp eax, dword [ebp+FAT.Length] |
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192 | ja .free_return0 |
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193 | @@: |
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3742 | clevermous | 194 | mov dword [ebp+FAT.Length], eax |
195 | and dword [ebp+FAT.Length+4], 0 |
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2643 | clevermous | 196 | sub eax, [ebp+FAT.DATA_START] ; eax = count of data sectors |
4273 | clevermous | 197 | jc .free_return0 |
2643 | clevermous | 198 | xor edx, edx |
199 | div [ebp+FAT.SECTORS_PER_CLUSTER] |
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200 | inc eax |
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201 | mov [ebp+FAT.LAST_CLUSTER], eax |
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202 | dec eax ; cluster count |
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4273 | clevermous | 203 | jz .free_return0 |
2643 | clevermous | 204 | mov [ebp+FAT.fatStartScan], 2 |
6867 | pathoswith | 205 | cmp eax, 0xfff5 |
2643 | clevermous | 206 | jb .fat16 |
207 | .fat32: |
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6868 | pathoswith | 208 | pusha |
209 | lea esi, [ebx+71] |
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210 | lea edi, [ebp+FAT.volumeLabel] |
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211 | movsd |
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212 | movsd |
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213 | movsd |
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214 | popa |
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2643 | clevermous | 215 | mov eax, [ebx+0x2c] ; rootdir cluster |
216 | mov [ebp+FAT.ROOT_CLUSTER], eax |
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217 | movzx eax, word [ebx+0x30] |
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218 | mov [ebp+FAT.ADR_FSINFO], eax |
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219 | push ebx |
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220 | add ebx, 512 |
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221 | call fs_read32_sys |
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222 | test eax, eax |
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223 | jnz @f |
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224 | mov eax, [ebx+0x1ec] |
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225 | cmp eax, -1 |
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2288 | clevermous | 226 | jz @f |
2643 | clevermous | 227 | mov [ebp+FAT.fatStartScan], eax |
2288 | clevermous | 228 | @@: |
2643 | clevermous | 229 | pop ebx |
230 | mov [ebp+FAT.fatRESERVED], 0x0FFFFFF6 |
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231 | mov [ebp+FAT.fatBAD], 0x0FFFFFF7 |
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232 | mov [ebp+FAT.fatEND], 0x0FFFFFF8 |
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233 | mov [ebp+FAT.fatMASK], 0x0FFFFFFF |
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234 | mov al, 32 |
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4273 | clevermous | 235 | .fat_not_12_finalize: |
2643 | clevermous | 236 | mov [ebp+FAT.fs_type], al |
4273 | clevermous | 237 | ; For FAT16 and FAT32, allocate 512 bytes for FAT cache. |
238 | mov eax, 512 |
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239 | call malloc |
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240 | test eax, eax |
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241 | jz .free_return0 |
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242 | mov [ebp+FAT.fat_cache_ptr], eax |
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2643 | clevermous | 243 | mov eax, ebp |
244 | pop ebp |
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2288 | clevermous | 245 | ret |
6867 | pathoswith | 246 | |
2643 | clevermous | 247 | .fat16: |
6868 | pathoswith | 248 | pusha |
249 | lea esi, [ebx+43] |
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250 | lea edi, [ebp+FAT.volumeLabel] |
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251 | movsd |
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252 | movsd |
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253 | movsd |
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254 | popa |
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255 | cmp eax, 0xff5 |
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256 | jb .fat12 |
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2643 | clevermous | 257 | and [ebp+FAT.ROOT_CLUSTER], 0 |
258 | mov [ebp+FAT.fatRESERVED], 0x0000FFF6 |
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259 | mov [ebp+FAT.fatBAD], 0x0000FFF7 |
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260 | mov [ebp+FAT.fatEND], 0x0000FFF8 |
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261 | mov [ebp+FAT.fatMASK], 0x0000FFFF |
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262 | mov al, 16 |
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4273 | clevermous | 263 | jmp .fat_not_12_finalize |
6867 | pathoswith | 264 | |
4273 | clevermous | 265 | .fat12: |
266 | and [ebp+FAT.ROOT_CLUSTER], 0 |
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267 | mov [ebp+FAT.fatRESERVED], 0xFF6 |
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268 | mov [ebp+FAT.fatBAD], 0xFF7 |
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269 | mov [ebp+FAT.fatEND], 0xFFF |
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270 | mov [ebp+FAT.fatMASK], 0xFFF |
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271 | mov al, 12 |
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2643 | clevermous | 272 | mov [ebp+FAT.fs_type], al |
4273 | clevermous | 273 | ; For FAT12, allocate&read data for entire table: |
274 | ; calculate A = ALIGN_UP(NUM_CLUSTERS, 8), |
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275 | ; allocate ALIGN_UP(A*3/2, 512) bytes for FAT table plus A*2 bytes for unpacked data. |
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276 | mov eax, [ebp+FAT.LAST_CLUSTER] |
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277 | and eax, not 7 |
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278 | add eax, 8 |
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279 | mov edx, eax |
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280 | lea eax, [eax*3] |
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281 | add eax, 512*2-1 |
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282 | shr eax, 10 |
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283 | shl eax, 9 |
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284 | lea eax, [eax+edx*2] |
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285 | call malloc |
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286 | test eax, eax |
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287 | jz .free_return0 |
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288 | ; Read ALIGN_UP(NUM_CLUSTERS*3/2, 512) bytes. |
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289 | push ebx |
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290 | mov [ebp+FAT.fat_cache_ptr], eax |
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291 | mov edx, [ebp+FAT.LAST_CLUSTER] |
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292 | lea edx, [(edx+1)*3 + 512*2-1] |
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293 | shr edx, 10 |
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294 | xchg eax, ebx |
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295 | xor eax, eax |
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296 | .read_fat: |
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297 | push eax |
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298 | add eax, [ebp+FAT.FAT_START] |
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299 | call fs_read32_sys |
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300 | test eax, eax |
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301 | pop eax |
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302 | jz @f |
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303 | mov eax, [ebp+FAT.fat_cache_ptr] |
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304 | call free |
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305 | pop ebx |
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306 | jmp .free_return0 |
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6867 | pathoswith | 307 | |
4273 | clevermous | 308 | @@: |
309 | add ebx, 512 |
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310 | inc eax |
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311 | cmp eax, edx |
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312 | jb .read_fat |
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313 | mov [ebp+FAT.fat12_unpacked_ptr], ebx |
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314 | pushad |
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315 | mov esi, [ebp+FAT.fat_cache_ptr] |
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316 | mov edi, [ebp+FAT.fat12_unpacked_ptr] |
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317 | mov edx, [ebp+FAT.LAST_CLUSTER] |
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318 | and edx, not 7 |
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319 | lea edx, [edi+(edx+8)*2] |
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320 | push edx |
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6867 | pathoswith | 321 | @@: |
4273 | clevermous | 322 | mov eax, dword [esi] |
323 | mov ebx, dword [esi+4] |
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324 | mov ecx, dword [esi+8] |
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325 | mov edx, ecx |
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6867 | pathoswith | 326 | shr edx, 4 |
327 | shr dx, 4 |
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4273 | clevermous | 328 | xor ch, ch |
6867 | pathoswith | 329 | shld ecx, ebx, 20 |
330 | shr cx, 4 |
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4273 | clevermous | 331 | shld ebx, eax, 12 |
6867 | pathoswith | 332 | and ebx, 0x0fffffff |
333 | shr bx, 4 |
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4273 | clevermous | 334 | shl eax, 4 |
6867 | pathoswith | 335 | and eax, 0x0fffffff |
336 | shr ax, 4 |
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4273 | clevermous | 337 | mov dword [edi], eax |
338 | mov dword [edi+4], ebx |
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339 | mov dword [edi+8], ecx |
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340 | mov dword [edi+12], edx |
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341 | add edi, 16 |
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342 | add esi, 12 |
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343 | cmp edi, [esp] |
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6867 | pathoswith | 344 | jnz @b |
4273 | clevermous | 345 | pop eax |
346 | popad |
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6867 | pathoswith | 347 | mov eax, ebp |
348 | pop ebx ebp |
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4273 | clevermous | 349 | ret |
350 | |||
6867 | pathoswith | 351 | fat_free: |
4273 | clevermous | 352 | push eax |
6867 | pathoswith | 353 | mov eax, [eax+FAT.fat_cache_ptr] |
354 | call free |
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4273 | clevermous | 355 | pop eax |
6867 | pathoswith | 356 | jmp free |
4273 | clevermous | 357 | |
358 | iglobal |
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359 | label fat_legal_chars byte |
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360 | ; 0 = not allowed |
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361 | ; 1 = allowed only in long names |
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362 | ; 3 = allowed |
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363 | times 32 db 0 |
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364 | ; ! " # $ % & ' ( ) * + , - . / |
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365 | db 1,3,0,3,3,3,3,3,3,3,0,1,1,3,3,0 |
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366 | ; 0 1 2 3 4 5 6 7 8 9 : ; < = > ? |
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367 | db 3,3,3,3,3,3,3,3,3,3,0,1,0,1,0,0 |
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368 | ; @ A B C D E F G H I J K L M N O |
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369 | db 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3 |
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370 | ; P Q R S T U V W X Y Z [ \ ] ^ _ |
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371 | db 3,3,3,3,3,3,3,3,3,3,3,1,0,1,3,3 |
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372 | ; ` a b c d e f g h i j k l m n o |
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373 | db 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3 |
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374 | ; p q r s t u v w x y z { | } ~ |
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375 | db 3,3,3,3,3,3,3,3,3,3,3,3,0,3,3,0 |
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376 | endg |
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377 | |||
378 | fat_name_is_legal: |
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6471 | pathoswith | 379 | ; in: esi -> UTF-8 name |
380 | ; out: CF=1 -> legal |
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4273 | clevermous | 381 | push esi |
382 | xor eax, eax |
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383 | @@: |
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384 | lodsb |
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385 | test al, al |
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6471 | pathoswith | 386 | js @b |
4273 | clevermous | 387 | test [fat_legal_chars+eax], 1 |
388 | jnz @b |
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6471 | pathoswith | 389 | test al, al |
390 | jnz @f |
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391 | stc |
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392 | @@: |
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4273 | clevermous | 393 | pop esi |
394 | ret |
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395 | |||
396 | fat_next_short_name: |
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397 | ; in: edi->8+3 name |
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6867 | pathoswith | 398 | ; out: name corrected, CF=1 -> error |
4273 | clevermous | 399 | pushad |
400 | mov ecx, 8 |
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401 | mov al, '~' |
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402 | std |
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403 | push edi |
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404 | add edi, 7 |
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405 | repnz scasb |
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406 | pop edi |
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407 | cld |
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408 | jz .tilde |
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409 | ; tilde is not found, insert "~1" at end |
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410 | add edi, 6 |
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411 | cmp word [edi], ' ' |
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412 | jnz .insert_tilde |
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413 | @@: |
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414 | dec edi |
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415 | cmp byte [edi], ' ' |
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416 | jz @b |
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417 | inc edi |
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418 | .insert_tilde: |
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419 | mov word [edi], '~1' |
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420 | popad |
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421 | clc |
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422 | ret |
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6867 | pathoswith | 423 | |
4273 | clevermous | 424 | .tilde: |
425 | push edi |
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426 | add edi, 7 |
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427 | xor ecx, ecx |
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6867 | pathoswith | 428 | @@: ; after tilde may be only digits and trailing spaces |
4273 | clevermous | 429 | cmp byte [edi], '~' |
430 | jz .break |
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431 | cmp byte [edi], ' ' |
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432 | jz .space |
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433 | cmp byte [edi], '9' |
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434 | jnz .found |
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435 | dec edi |
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436 | jmp @b |
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6867 | pathoswith | 437 | |
4273 | clevermous | 438 | .space: |
439 | dec edi |
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440 | inc ecx |
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441 | jmp @b |
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6867 | pathoswith | 442 | |
4273 | clevermous | 443 | .found: |
444 | inc byte [edi] |
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445 | add dword [esp], 8 |
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446 | jmp .zerorest |
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6867 | pathoswith | 447 | |
4273 | clevermous | 448 | .break: |
449 | jecxz .noplace |
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450 | inc edi |
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451 | mov al, '1' |
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452 | @@: |
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453 | xchg al, [edi] |
||
454 | inc edi |
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455 | cmp al, ' ' |
||
456 | mov al, '0' |
||
457 | jnz @b |
||
458 | .succ: |
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459 | pop edi |
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460 | popad |
||
461 | clc |
||
462 | ret |
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6867 | pathoswith | 463 | |
4273 | clevermous | 464 | .noplace: |
465 | dec edi |
||
466 | cmp edi, [esp] |
||
467 | jz .err |
||
468 | add dword [esp], 8 |
||
469 | mov word [edi], '~1' |
||
470 | inc edi |
||
471 | inc edi |
||
472 | @@: |
||
473 | mov byte [edi], '0' |
||
474 | .zerorest: |
||
475 | inc edi |
||
476 | cmp edi, [esp] |
||
477 | jb @b |
||
478 | pop edi |
||
479 | popad |
||
480 | ret |
||
6867 | pathoswith | 481 | |
4273 | clevermous | 482 | .err: |
483 | pop edi |
||
484 | popad |
||
485 | stc |
||
486 | ret |
||
487 | |||
488 | fat_gen_short_name: |
||
6471 | pathoswith | 489 | ; in: |
490 | ; esi -> UTF-8 name |
||
491 | ; edi -> buffer (8+3=11 chars) |
||
4273 | clevermous | 492 | pushad |
493 | mov eax, ' ' |
||
494 | push edi |
||
495 | stosd |
||
496 | stosd |
||
497 | stosd |
||
498 | pop edi |
||
499 | xor eax, eax |
||
500 | movi ebx, 8 |
||
501 | lea ecx, [edi+8] |
||
502 | .loop: |
||
503 | lodsb |
||
504 | test al, al |
||
6471 | pathoswith | 505 | js .space |
4273 | clevermous | 506 | jz .done |
6471 | pathoswith | 507 | test [fat_legal_chars+eax], 2 |
4273 | clevermous | 508 | jz .space |
509 | cmp al, '.' |
||
510 | jz .dot |
||
511 | dec bl |
||
512 | jns .store |
||
6471 | pathoswith | 513 | inc bl |
4273 | clevermous | 514 | .space: |
515 | or bh, 1 |
||
516 | jmp .loop |
||
6471 | pathoswith | 517 | |
4273 | clevermous | 518 | .store: |
6471 | pathoswith | 519 | call cp866toUpper |
4273 | clevermous | 520 | stosb |
521 | jmp .loop |
||
6471 | pathoswith | 522 | |
4273 | clevermous | 523 | .dot: |
524 | test bh, 2 |
||
525 | jz .firstdot |
||
526 | pop ebx |
||
527 | add ebx, edi |
||
528 | sub ebx, ecx |
||
529 | push ebx |
||
530 | cmp ebx, ecx |
||
531 | jb @f |
||
532 | pop ebx |
||
533 | push ecx |
||
534 | @@: |
||
535 | cmp edi, ecx |
||
536 | jbe .skip |
||
537 | @@: |
||
538 | dec edi |
||
539 | mov al, [edi] |
||
540 | dec ebx |
||
541 | mov [ebx], al |
||
542 | mov byte [edi], ' ' |
||
543 | cmp edi, ecx |
||
544 | ja @b |
||
545 | .skip: |
||
546 | mov bh, 3 |
||
547 | jmp @f |
||
6867 | pathoswith | 548 | |
4273 | clevermous | 549 | .firstdot: |
550 | cmp bl, 8 |
||
551 | jz .space |
||
552 | push edi |
||
553 | or bh, 2 |
||
554 | @@: |
||
555 | mov edi, ecx |
||
556 | mov bl, 3 |
||
557 | jmp .loop |
||
6867 | pathoswith | 558 | |
4273 | clevermous | 559 | .done: |
560 | test bh, 2 |
||
561 | jz @f |
||
562 | pop edi |
||
563 | @@: |
||
564 | lea edi, [ecx-8] |
||
565 | test bh, 1 |
||
566 | jz @f |
||
567 | call fat_next_short_name |
||
568 | @@: |
||
569 | popad |
||
570 | ret |
||
571 | |||
2288 | clevermous | 572 | set_FAT: |
6867 | pathoswith | 573 | ; in: eax = cluster, edx = value to save |
574 | ; out: edx = old value, CF=1 -> error |
||
2288 | clevermous | 575 | push eax ebx esi |
576 | cmp eax, 2 |
||
6867 | pathoswith | 577 | jc .ret |
578 | cmp [ebp+FAT.LAST_CLUSTER], eax |
||
579 | jc .ret |
||
4273 | clevermous | 580 | cmp [ebp+FAT.fs_type], 12 |
6867 | pathoswith | 581 | je .FAT12 |
2643 | clevermous | 582 | cmp [ebp+FAT.fs_type], 16 |
6867 | pathoswith | 583 | je @f |
2288 | clevermous | 584 | add eax, eax |
6867 | pathoswith | 585 | @@: |
2288 | clevermous | 586 | add eax, eax |
587 | mov esi, 511 |
||
6867 | pathoswith | 588 | and esi, eax |
589 | shr eax, 9 |
||
2643 | clevermous | 590 | add eax, [ebp+FAT.FAT_START] |
4273 | clevermous | 591 | mov ebx, [ebp+FAT.fat_cache_ptr] |
6867 | pathoswith | 592 | cmp eax, [ebp+FAT.fat_in_cache] |
593 | je .inCache |
||
594 | cmp [ebp+FAT.fat_change], 0 |
||
595 | je @f |
||
596 | call write_fat_sector |
||
597 | @@: |
||
598 | mov [ebp+FAT.fat_in_cache], eax |
||
2643 | clevermous | 599 | call fs_read32_sys |
600 | test eax, eax |
||
6867 | pathoswith | 601 | jne .error |
602 | .inCache: |
||
2643 | clevermous | 603 | cmp [ebp+FAT.fs_type], 16 |
6867 | pathoswith | 604 | jne .test32 |
2288 | clevermous | 605 | xchg [ebx+esi], dx ; save new value and get old value |
6867 | pathoswith | 606 | jmp .write |
2288 | clevermous | 607 | |
6867 | pathoswith | 608 | .test32: |
2643 | clevermous | 609 | mov eax, [ebp+FAT.fatMASK] |
2288 | clevermous | 610 | and edx, eax |
611 | xor eax, -1 ; mask for high bits |
||
612 | and eax, [ebx+esi] ; get high 4 bits |
||
613 | or eax, edx |
||
614 | mov edx, [ebx+esi] ; get old value |
||
615 | mov [ebx+esi], eax ; save new value |
||
6867 | pathoswith | 616 | .write: |
617 | mov [ebp+FAT.fat_change], 1 |
||
2643 | clevermous | 618 | and edx, [ebp+FAT.fatMASK] |
6867 | pathoswith | 619 | .ret: |
2288 | clevermous | 620 | pop esi ebx eax |
621 | ret |
||
6867 | pathoswith | 622 | |
623 | .error: |
||
2643 | clevermous | 624 | stc |
6867 | pathoswith | 625 | jmp .ret |
2288 | clevermous | 626 | |
6867 | pathoswith | 627 | .FAT12: |
4273 | clevermous | 628 | test edx, 0xF000 |
6867 | pathoswith | 629 | jnz .error |
4273 | clevermous | 630 | mov ebx, [ebp+FAT.fat12_unpacked_ptr] |
631 | xchg [ebx+eax*2], dx |
||
632 | mov [ebp+FAT.fat_change], 1 |
||
6867 | pathoswith | 633 | jmp .ret |
2288 | clevermous | 634 | |
635 | get_FAT: |
||
6867 | pathoswith | 636 | ; in: eax = cluster |
637 | ; out: eax = next cluster, CF=1 -> error |
||
2288 | clevermous | 638 | push ebx esi |
4273 | clevermous | 639 | cmp [ebp+FAT.fs_type], 12 |
6867 | pathoswith | 640 | je .FAT12 |
2643 | clevermous | 641 | cmp [ebp+FAT.fs_type], 16 |
6867 | pathoswith | 642 | je @f |
2288 | clevermous | 643 | add eax, eax |
6867 | pathoswith | 644 | @@: |
2288 | clevermous | 645 | add eax, eax |
646 | mov esi, 511 |
||
6867 | pathoswith | 647 | and esi, eax |
648 | shr eax, 9 |
||
2643 | clevermous | 649 | add eax, [ebp+FAT.FAT_START] |
4273 | clevermous | 650 | mov ebx, [ebp+FAT.fat_cache_ptr] |
6867 | pathoswith | 651 | cmp eax, [ebp+FAT.fat_in_cache] |
652 | je .inCache |
||
653 | cmp [ebp+FAT.fat_change], 0 |
||
654 | je @f |
||
655 | call write_fat_sector |
||
656 | @@: |
||
2643 | clevermous | 657 | mov [ebp+FAT.fat_in_cache], eax |
658 | call fs_read32_sys |
||
659 | test eax, eax |
||
6867 | pathoswith | 660 | jnz .error |
661 | .inCache: |
||
2288 | clevermous | 662 | mov eax, [ebx+esi] |
2643 | clevermous | 663 | and eax, [ebp+FAT.fatMASK] |
6867 | pathoswith | 664 | .ret: |
2288 | clevermous | 665 | pop esi ebx |
666 | ret |
||
6867 | pathoswith | 667 | |
668 | .error: |
||
2643 | clevermous | 669 | stc |
6867 | pathoswith | 670 | jmp .ret |
2288 | clevermous | 671 | |
6867 | pathoswith | 672 | .FAT12: |
4273 | clevermous | 673 | mov ebx, [ebp+FAT.fat12_unpacked_ptr] |
674 | movzx eax, word [ebx+eax*2] |
||
6867 | pathoswith | 675 | jmp .ret |
2288 | clevermous | 676 | |
677 | get_free_FAT: |
||
6867 | pathoswith | 678 | ; out: eax = number of first free cluster, CF=1 -> disk full |
2288 | clevermous | 679 | push ecx |
6867 | pathoswith | 680 | mov ecx, [ebp+FAT.LAST_CLUSTER] |
2643 | clevermous | 681 | mov eax, [ebp+FAT.fatStartScan] |
4273 | clevermous | 682 | cmp [ebp+FAT.fs_type], 12 |
683 | jz get_free_FAT12 |
||
684 | dec ecx |
||
2288 | clevermous | 685 | cmp eax, 2 |
6867 | pathoswith | 686 | jb .reset |
687 | .test: |
||
688 | cmp eax, [ebp+FAT.LAST_CLUSTER] |
||
689 | jbe .inRange |
||
690 | .reset: |
||
2288 | clevermous | 691 | mov eax, 2 |
6867 | pathoswith | 692 | .inRange: |
2288 | clevermous | 693 | push eax |
6867 | pathoswith | 694 | call get_FAT |
695 | jc @f |
||
696 | test eax, eax |
||
2288 | clevermous | 697 | pop eax |
6867 | pathoswith | 698 | je .found |
699 | inc eax |
||
700 | dec ecx |
||
701 | jnz .test |
||
702 | .notFound: |
||
703 | pop ecx |
||
2288 | clevermous | 704 | stc |
705 | ret |
||
706 | |||
6867 | pathoswith | 707 | @@: |
2643 | clevermous | 708 | pop eax |
6867 | pathoswith | 709 | jmp .notFound |
2643 | clevermous | 710 | |
6867 | pathoswith | 711 | .found: |
2288 | clevermous | 712 | lea ecx, [eax+1] |
2643 | clevermous | 713 | mov [ebp+FAT.fatStartScan], ecx |
2288 | clevermous | 714 | pop ecx |
715 | clc |
||
716 | ret |
||
717 | |||
4273 | clevermous | 718 | get_free_FAT12: |
719 | push edx edi |
||
720 | mov edi, [ebp+FAT.fat12_unpacked_ptr] |
||
721 | cmp eax, 2 |
||
722 | jb .reset |
||
723 | cmp eax, ecx |
||
724 | jbe @f |
||
725 | .reset: |
||
726 | mov eax, 2 |
||
727 | @@: |
||
728 | mov edx, eax |
||
729 | lea edi, [edi+eax*2] |
||
730 | sub ecx, eax |
||
731 | inc ecx |
||
732 | xor eax, eax |
||
733 | repnz scasw |
||
734 | jz .found |
||
735 | cmp edx, 2 |
||
736 | jz .notfound |
||
737 | mov edi, [ebp+FAT.fat12_unpacked_ptr] |
||
738 | lea ecx, [edx-2] |
||
739 | repnz scasw |
||
740 | jnz .notfound |
||
741 | .found: |
||
742 | sub edi, [ebp+FAT.fat12_unpacked_ptr] |
||
743 | shr edi, 1 |
||
744 | mov [ebp+FAT.fatStartScan], edi |
||
745 | lea eax, [edi-1] |
||
6867 | pathoswith | 746 | @@: |
4273 | clevermous | 747 | pop edi edx ecx |
748 | ret |
||
6867 | pathoswith | 749 | |
4273 | clevermous | 750 | .notfound: |
751 | stc |
||
6867 | pathoswith | 752 | jmp @b |
2288 | clevermous | 753 | |
754 | write_fat_sector: |
||
755 | push eax ebx ecx |
||
2643 | clevermous | 756 | mov [ebp+FAT.fat_change], 0 |
757 | mov eax, [ebp+FAT.fat_in_cache] |
||
2288 | clevermous | 758 | cmp eax, -1 |
6867 | pathoswith | 759 | jz @f |
4273 | clevermous | 760 | mov ebx, [ebp+FAT.fat_cache_ptr] |
2643 | clevermous | 761 | mov ecx, [ebp+FAT.NUMBER_OF_FATS] |
6867 | pathoswith | 762 | .write_next_fat: |
2643 | clevermous | 763 | push eax |
764 | call fs_write32_sys |
||
765 | pop eax |
||
766 | add eax, [ebp+FAT.SECTORS_PER_FAT] |
||
2288 | clevermous | 767 | dec ecx |
6867 | pathoswith | 768 | jnz .write_next_fat |
769 | @@: |
||
2288 | clevermous | 770 | pop ecx ebx eax |
771 | ret |
||
772 | |||
773 | get_date_for_file: |
||
6867 | pathoswith | 774 | ; out in ax: |
775 | ; bits 0-4 = day |
||
776 | ; bits 5-8 = month |
||
777 | ; bits 9-15 = count of years from 1980 |
||
778 | mov al, 7 |
||
779 | call fsReadCMOS |
||
2288 | clevermous | 780 | ror eax, 5 |
6867 | pathoswith | 781 | mov al, 8 |
782 | call fsReadCMOS |
||
2288 | clevermous | 783 | ror eax, 4 |
6867 | pathoswith | 784 | mov al, 9 |
785 | call fsReadCMOS |
||
786 | add ax, 20 |
||
787 | rol eax, 9 |
||
2288 | clevermous | 788 | ret |
789 | |||
790 | get_time_for_file: |
||
6867 | pathoswith | 791 | ; out in ax: |
792 | ; bits 0-4 = second (the low bit is lost) |
||
793 | ; bits 5-10 = minute |
||
794 | ; bits 11-15 = hour |
||
795 | mov al, 0 |
||
796 | call fsReadCMOS |
||
2288 | clevermous | 797 | ror eax, 6 |
6867 | pathoswith | 798 | mov al, 2 |
799 | call fsReadCMOS |
||
2288 | clevermous | 800 | ror eax, 6 |
6867 | pathoswith | 801 | mov al, 4 |
802 | call fsReadCMOS |
||
2288 | clevermous | 803 | rol eax, 11 |
804 | ret |
||
805 | |||
806 | add_disk_free_space: |
||
6867 | pathoswith | 807 | ; in: ecx = cluster count (signed) |
808 | test ecx, ecx |
||
809 | je .ret |
||
810 | cmp [ebp+FAT.fs_type], 32 |
||
811 | jne .ret |
||
2288 | clevermous | 812 | push eax ebx |
2643 | clevermous | 813 | mov eax, [ebp+FAT.ADR_FSINFO] |
814 | lea ebx, [ebp+FAT.fsinfo_buffer] |
||
815 | call fs_read32_sys |
||
816 | test eax, eax |
||
6867 | pathoswith | 817 | jnz @f |
818 | cmp dword [ebx+0x1fc], 0xaa550000 ; check sector id |
||
819 | jne @f |
||
2288 | clevermous | 820 | add [ebx+0x1e8], ecx |
2643 | clevermous | 821 | push [ebp+FAT.fatStartScan] |
2288 | clevermous | 822 | pop dword [ebx+0x1ec] |
2643 | clevermous | 823 | mov eax, [ebp+FAT.ADR_FSINFO] |
824 | call fs_write32_sys |
||
6867 | pathoswith | 825 | @@: |
2288 | clevermous | 826 | pop ebx eax |
6867 | pathoswith | 827 | .ret: |
2288 | clevermous | 828 | ret |
829 | |||
830 | clear_cluster_chain: |
||
6867 | pathoswith | 831 | ; in: eax = first cluster |
2288 | clevermous | 832 | push eax ecx edx |
833 | xor ecx, ecx ; cluster count |
||
6867 | pathoswith | 834 | @@: |
835 | cmp eax, [ebp+FAT.LAST_CLUSTER] |
||
836 | ja @f |
||
837 | cmp eax, 2 |
||
838 | jb @f |
||
839 | cmp eax, [ebp+FAT.ROOT_CLUSTER] |
||
840 | jz @f |
||
2288 | clevermous | 841 | xor edx, edx |
6867 | pathoswith | 842 | call set_FAT |
843 | jc .ret |
||
844 | inc ecx |
||
845 | mov eax, edx |
||
846 | jmp @b |
||
2288 | clevermous | 847 | |
6867 | pathoswith | 848 | @@: |
849 | call add_disk_free_space |
||
2643 | clevermous | 850 | clc |
6867 | pathoswith | 851 | .ret: |
2288 | clevermous | 852 | pop edx ecx eax |
853 | ret |
||
854 | |||
855 | update_disk: |
||
6867 | pathoswith | 856 | cmp [ebp+FAT.fat_change], 0 |
857 | jz .noChange |
||
4273 | clevermous | 858 | cmp [ebp+FAT.fs_type], 12 |
859 | jz .fat12 |
||
2288 | clevermous | 860 | call write_fat_sector |
6867 | pathoswith | 861 | .noChange: |
2643 | clevermous | 862 | mov esi, [ebp+PARTITION.Disk] |
863 | call disk_sync |
||
2288 | clevermous | 864 | ret |
865 | |||
6867 | pathoswith | 866 | .fat12: |
867 | mov esi, [ebp+FAT.fat12_unpacked_ptr] |
||
868 | mov edi, [ebp+FAT.fat_cache_ptr] |
||
869 | mov edx, [ebp+FAT.LAST_CLUSTER] |
||
870 | and edx, not 7 |
||
871 | lea edx, [esi+(edx+8)*2] |
||
872 | @@: |
||
873 | mov eax, dword [esi] |
||
874 | mov ebx, dword [esi+4] |
||
875 | shl ax, 4 |
||
876 | shl eax, 4 |
||
877 | shl bx, 4 |
||
878 | shr ebx, 4 |
||
879 | shrd eax, ebx, 8 |
||
880 | shr ebx, 8 |
||
881 | mov dword [edi], eax |
||
882 | mov word [edi+4], bx |
||
883 | add edi, 6 |
||
884 | add esi, 8 |
||
885 | cmp esi, edx |
||
886 | jb @b |
||
887 | mov esi, [ebp+FAT.NUMBER_OF_FATS] |
||
888 | mov edx, [ebp+FAT.LAST_CLUSTER] |
||
889 | lea edx, [(edx+1)*3 + 512*2-1] |
||
890 | shr edx, 10 |
||
891 | push [ebp+FAT.FAT_START] |
||
892 | .write_fats: |
||
893 | xor eax, eax |
||
894 | mov ebx, [ebp+FAT.fat_cache_ptr] |
||
895 | .loop1: |
||
896 | push eax |
||
897 | add eax, [esp+4] |
||
898 | call fs_write32_sys |
||
899 | test eax, eax |
||
900 | pop eax |
||
901 | jnz @f |
||
902 | add ebx, 512 |
||
903 | inc eax |
||
904 | cmp eax, edx |
||
905 | jb .loop1 |
||
906 | pop eax |
||
907 | add eax, [ebp+FAT.SECTORS_PER_FAT] |
||
908 | push eax |
||
909 | dec esi |
||
910 | jnz .write_fats |
||
911 | @@: |
||
912 | pop eax |
||
913 | mov [ebp+FAT.fat_change], 0 |
||
914 | jmp .noChange |
||
915 | |||
2643 | clevermous | 916 | fat_lock: |
917 | lea ecx, [ebp+FAT.Lock] |
||
918 | jmp mutex_lock |
||
6867 | pathoswith | 919 | |
2643 | clevermous | 920 | fat_unlock: |
921 | lea ecx, [ebp+FAT.Lock] |
||
922 | jmp mutex_unlock |
||
2288 | clevermous | 923 | |
4273 | clevermous | 924 | fat_get_name: |
6868 | pathoswith | 925 | ; in: edi -> FAT entry, esi -> buffer for UTF-16 name |
926 | ; out: CF=1 -> no valid entry |
||
4273 | clevermous | 927 | cmp byte [edi], 0 |
928 | jz .no |
||
929 | cmp byte [edi], 0xE5 |
||
6471 | pathoswith | 930 | jz .no |
4273 | clevermous | 931 | cmp byte [edi+11], 0xF |
932 | jz .longname |
||
6868 | pathoswith | 933 | push edi |
934 | xchg esi, edi |
||
935 | test byte [esi+11], 8 |
||
936 | jnz .label |
||
937 | pushd ecx 8 |
||
938 | pop ecx |
||
4273 | clevermous | 939 | @@: |
6471 | pathoswith | 940 | lodsb |
7003 | pathoswith | 941 | call ansi2uni_char |
6471 | pathoswith | 942 | stosw |
4273 | clevermous | 943 | loop @b |
6471 | pathoswith | 944 | mov cl, 8 |
4273 | clevermous | 945 | @@: |
6471 | pathoswith | 946 | cmp word [edi-2], ' ' |
4273 | clevermous | 947 | jnz @f |
6471 | pathoswith | 948 | sub edi, 2 |
4273 | clevermous | 949 | loop @b |
950 | @@: |
||
6471 | pathoswith | 951 | mov word [edi], '.' |
952 | add edi, 2 |
||
953 | mov cl, 3 |
||
4273 | clevermous | 954 | @@: |
6471 | pathoswith | 955 | lodsb |
7003 | pathoswith | 956 | call ansi2uni_char |
6471 | pathoswith | 957 | stosw |
4273 | clevermous | 958 | loop @b |
6471 | pathoswith | 959 | mov cl, 3 |
4273 | clevermous | 960 | @@: |
6471 | pathoswith | 961 | cmp word [edi-2], ' ' |
4273 | clevermous | 962 | jnz @f |
6471 | pathoswith | 963 | sub edi, 2 |
4273 | clevermous | 964 | loop @b |
6471 | pathoswith | 965 | sub edi, 2 |
4273 | clevermous | 966 | @@: |
6471 | pathoswith | 967 | and word [edi], 0 ; CF=0 |
6868 | pathoswith | 968 | pop ecx edi |
4273 | clevermous | 969 | ret |
6471 | pathoswith | 970 | |
6868 | pathoswith | 971 | .label: |
972 | lea edi, [ebp+FAT.volumeLabel] |
||
973 | movsd |
||
974 | movsd |
||
975 | movsd |
||
976 | pop edi |
||
6471 | pathoswith | 977 | .no: |
978 | stc |
||
979 | ret |
||
980 | |||
4273 | clevermous | 981 | .longname: |
982 | mov al, byte [edi] |
||
983 | and eax, 0x3F |
||
984 | dec eax |
||
985 | cmp al, 20 |
||
986 | jae .no ; ignore invalid entries |
||
6868 | pathoswith | 987 | mov word [esi+260*2], 0 ; force null-terminating for orphans |
4273 | clevermous | 988 | imul eax, 13*2 |
989 | test byte [edi], 0x40 |
||
990 | jz @f |
||
6868 | pathoswith | 991 | mov word [esi+eax+13*2], 0 |
6471 | pathoswith | 992 | @@: ; copy name (13 chars in UTF-16) |
6868 | pathoswith | 993 | push edi |
994 | inc edi |
||
995 | add esi, eax |
||
996 | xchg esi, edi |
||
6471 | pathoswith | 997 | movsd |
998 | movsd |
||
6868 | pathoswith | 999 | movsw |
1000 | add esi, 3 |
||
6471 | pathoswith | 1001 | movsd |
1002 | movsd |
||
1003 | movsd |
||
1004 | add esi, 2 |
||
1005 | movsd |
||
6868 | pathoswith | 1006 | pop edi |
6471 | pathoswith | 1007 | test eax, eax |
1008 | jnz .no ; if this is not first entry, more processing required |
||
4273 | clevermous | 1009 | ret |
1010 | |||
6868 | pathoswith | 1011 | fat_find_lfn: |
1012 | ; in: |
||
1013 | ; esi -> path in UTF-8 |
||
1014 | ; parameters in the stack |
||
6471 | pathoswith | 1015 | ; out: |
6868 | pathoswith | 1016 | ; esi -> next name in the path |
1017 | ; edi -> direntry |
||
1018 | ; CF=1 -> file not found, eax = error code |
||
1019 | lea eax, [esp+12] |
||
1020 | call dword [eax-4] |
||
1021 | jc .reterr |
||
1022 | sub esp, 262*2 ; reserve place for LFN |
||
1023 | .l1: |
||
1024 | push esi |
||
1025 | lea esi, [esp+4] |
||
1026 | call fat_get_name |
||
1027 | pop esi |
||
1028 | jc .no |
||
1029 | push edi esi |
||
1030 | lea edi, [esp+8] |
||
6471 | pathoswith | 1031 | @@: |
1032 | call utf8to16 |
||
1033 | call utf16toUpper |
||
1034 | mov edx, eax |
||
6868 | pathoswith | 1035 | mov ax, [edi] |
6471 | pathoswith | 1036 | call utf16toUpper |
1037 | cmp ax, dx |
||
4273 | clevermous | 1038 | jnz .done |
6868 | pathoswith | 1039 | add edi, 2 |
6471 | pathoswith | 1040 | test ax, ax |
1041 | jnz @b |
||
4273 | clevermous | 1042 | dec esi |
6868 | pathoswith | 1043 | pop eax edi |
1044 | .found: |
||
1045 | add esp, 262*2 |
||
1046 | ; if this is LFN entry, advance to true entry |
||
1047 | cmp byte [edi+11], 0xF |
||
1048 | jnz @f |
||
1049 | lea eax, [esp+12] |
||
1050 | call dword[eax-8] |
||
1051 | jc .reterr |
||
1052 | @@: |
||
1053 | xor eax, eax |
||
4273 | clevermous | 1054 | ret |
6471 | pathoswith | 1055 | |
4273 | clevermous | 1056 | .done: |
6471 | pathoswith | 1057 | cmp dx, '/' |
4273 | clevermous | 1058 | jnz @f |
6471 | pathoswith | 1059 | test ax, ax |
4273 | clevermous | 1060 | jnz @f |
6471 | pathoswith | 1061 | mov [esp], esi |
4273 | clevermous | 1062 | @@: |
6868 | pathoswith | 1063 | pop esi edi |
4273 | clevermous | 1064 | jz .found |
6868 | pathoswith | 1065 | .no: |
1066 | lea eax, [esp+262*2+12] |
||
1067 | call dword[eax-8] |
||
4273 | clevermous | 1068 | jnc .l1 |
6471 | pathoswith | 1069 | add esp, 262*2 |
4273 | clevermous | 1070 | .reterr: |
1071 | stc |
||
1072 | ret |
||
6471 | pathoswith | 1073 | |
4273 | clevermous | 1074 | fat_time_to_bdfe: |
1075 | ; in: eax=FAT time |
||
1076 | ; out: eax=BDFE time |
||
1077 | push ecx edx |
||
1078 | mov ecx, eax |
||
1079 | mov edx, eax |
||
1080 | shr eax, 11 |
||
1081 | shl eax, 16 ; hours |
||
1082 | and edx, 0x1F |
||
1083 | add edx, edx |
||
1084 | mov al, dl ; seconds |
||
1085 | shr ecx, 5 |
||
1086 | and ecx, 0x3F |
||
1087 | mov ah, cl ; minutes |
||
1088 | pop edx ecx |
||
1089 | ret |
||
1090 | |||
1091 | fat_date_to_bdfe: |
||
1092 | push ecx edx |
||
1093 | mov ecx, eax |
||
1094 | mov edx, eax |
||
1095 | shr eax, 9 |
||
1096 | add ax, 1980 |
||
1097 | shl eax, 16 ; year |
||
1098 | and edx, 0x1F |
||
1099 | mov al, dl ; day |
||
1100 | shr ecx, 5 |
||
1101 | and ecx, 0xF |
||
1102 | mov ah, cl ; month |
||
1103 | pop edx ecx |
||
1104 | ret |
||
1105 | |||
1106 | bdfe_to_fat_time: |
||
1107 | push edx |
||
1108 | mov edx, eax |
||
1109 | shr eax, 16 |
||
1110 | and dh, 0x3F |
||
1111 | shl eax, 6 |
||
1112 | or al, dh |
||
1113 | shr dl, 1 |
||
1114 | and dl, 0x1F |
||
1115 | shl eax, 5 |
||
1116 | or al, dl |
||
1117 | pop edx |
||
1118 | ret |
||
1119 | |||
1120 | bdfe_to_fat_date: |
||
1121 | push edx |
||
1122 | mov edx, eax |
||
1123 | shr eax, 16 |
||
1124 | sub ax, 1980 |
||
1125 | and dh, 0xF |
||
1126 | shl eax, 4 |
||
1127 | or al, dh |
||
1128 | and dl, 0x1F |
||
1129 | shl eax, 5 |
||
1130 | or al, dl |
||
1131 | pop edx |
||
1132 | ret |
||
1133 | |||
1134 | fat_entry_to_bdfe: |
||
1135 | ; convert FAT entry at edi to BDFE (block of data of folder entry) at esi, advance esi |
||
1136 | mov eax, [ebp-4] |
||
6471 | pathoswith | 1137 | mov [esi+4], eax ; cp866/UNICODE name |
4273 | clevermous | 1138 | fat_entry_to_bdfe2: |
1139 | movzx eax, byte [edi+11] |
||
1140 | mov [esi], eax ; attributes |
||
1141 | movzx eax, word [edi+14] |
||
1142 | call fat_time_to_bdfe |
||
1143 | mov [esi+8], eax ; creation time |
||
1144 | movzx eax, word [edi+16] |
||
1145 | call fat_date_to_bdfe |
||
1146 | mov [esi+12], eax ; creation date |
||
1147 | and dword [esi+16], 0 ; last access time is not supported on FAT |
||
1148 | movzx eax, word [edi+18] |
||
1149 | call fat_date_to_bdfe |
||
1150 | mov [esi+20], eax ; last access date |
||
1151 | movzx eax, word [edi+22] |
||
1152 | call fat_time_to_bdfe |
||
1153 | mov [esi+24], eax ; last write time |
||
1154 | movzx eax, word [edi+24] |
||
1155 | call fat_date_to_bdfe |
||
1156 | mov [esi+28], eax ; last write date |
||
1157 | mov eax, [edi+28] |
||
1158 | mov [esi+32], eax ; file size (low dword) |
||
1159 | xor eax, eax |
||
1160 | mov [esi+36], eax ; file size (high dword) |
||
1161 | test ebp, ebp |
||
1162 | jz .ret |
||
6576 | pathoswith | 1163 | add esi, 40 |
1164 | push edi esi |
||
1165 | mov edi, esi |
||
4273 | clevermous | 1166 | mov esi, ebp |
6798 | pathoswith | 1167 | cmp byte [ebp-4], 2 |
1168 | jz .utf16 |
||
1169 | cmp byte [ebp-4], 3 |
||
1170 | jz .utf8 |
||
1171 | @@: |
||
6576 | pathoswith | 1172 | lodsw |
6798 | pathoswith | 1173 | call uni2ansi_char |
1174 | stosb |
||
1175 | test al, al |
||
1176 | jnz @b |
||
6576 | pathoswith | 1177 | pop esi edi |
6798 | pathoswith | 1178 | add esi, 264 |
4273 | clevermous | 1179 | .ret: |
1180 | ret |
||
6471 | pathoswith | 1181 | |
6798 | pathoswith | 1182 | .utf8: |
1183 | push ecx |
||
1184 | mov ecx, 519 |
||
1185 | call UTF16to8_string |
||
1186 | pop ecx |
||
1187 | jmp @f |
||
1188 | |||
1189 | .utf16: |
||
6471 | pathoswith | 1190 | lodsw |
6798 | pathoswith | 1191 | stosw |
1192 | test eax, eax |
||
1193 | jnz .utf16 |
||
1194 | @@: |
||
6576 | pathoswith | 1195 | pop esi edi |
6798 | pathoswith | 1196 | add esi, 520 |
6576 | pathoswith | 1197 | ret |
4273 | clevermous | 1198 | |
1199 | bdfe_to_fat_entry: |
||
1200 | ; convert BDFE at edx to FAT entry at edi |
||
1201 | ; destroys eax |
||
1202 | ; attributes byte |
||
1203 | test byte [edi+11], 8 ; volume label? |
||
1204 | jnz @f |
||
1205 | mov al, [edx] |
||
1206 | and al, 0x27 |
||
1207 | and byte [edi+11], 0x10 |
||
1208 | or byte [edi+11], al |
||
1209 | @@: |
||
1210 | mov eax, [edx+8] |
||
1211 | call bdfe_to_fat_time |
||
1212 | mov [edi+14], ax ; creation time |
||
1213 | mov eax, [edx+12] |
||
1214 | call bdfe_to_fat_date |
||
1215 | mov [edi+16], ax ; creation date |
||
1216 | mov eax, [edx+20] |
||
1217 | call bdfe_to_fat_date |
||
1218 | mov [edi+18], ax ; last access date |
||
1219 | mov eax, [edx+24] |
||
1220 | call bdfe_to_fat_time |
||
1221 | mov [edi+22], ax ; last write time |
||
1222 | mov eax, [edx+28] |
||
1223 | call bdfe_to_fat_date |
||
1224 | mov [edi+24], ax ; last write date |
||
1225 | ret |
||
1226 | |||
2288 | clevermous | 1227 | hd_find_lfn: |
6471 | pathoswith | 1228 | ; in: esi -> path string in UTF-8 |
2643 | clevermous | 1229 | ; out: CF=1 - file not found, eax=error code |
2288 | clevermous | 1230 | ; else CF=0 and edi->direntry, eax=sector |
1231 | push esi edi |
||
1232 | push 0 |
||
1233 | push 0 |
||
4273 | clevermous | 1234 | push fat1x_root_first |
1235 | push fat1x_root_next |
||
2643 | clevermous | 1236 | mov eax, [ebp+FAT.ROOT_CLUSTER] |
1237 | cmp [ebp+FAT.fs_type], 32 |
||
2288 | clevermous | 1238 | jz .fat32 |
1239 | .loop: |
||
4273 | clevermous | 1240 | and [ebp+FAT.longname_sec1], 0 |
1241 | and [ebp+FAT.longname_sec2], 0 |
||
2288 | clevermous | 1242 | call fat_find_lfn |
1243 | jc .notfound |
||
1244 | cmp byte [esi], 0 |
||
1245 | jz .found |
||
1246 | test byte [edi+11], 10h |
||
1247 | jz .notfound |
||
1248 | and dword [esp+12], 0 |
||
1249 | mov eax, [edi+20-2] |
||
1250 | mov ax, [edi+26] ; cluster |
||
1251 | .fat32: |
||
1252 | mov [esp+8], eax |
||
1253 | mov dword [esp+4], fat_notroot_first |
||
1254 | mov dword [esp], fat_notroot_next |
||
1255 | jmp .loop |
||
6468 | pathoswith | 1256 | |
2288 | clevermous | 1257 | .notfound: |
1258 | add esp, 16 |
||
1259 | pop edi esi |
||
1260 | stc |
||
6468 | pathoswith | 1261 | ret |
1262 | |||
2288 | clevermous | 1263 | .found: |
1264 | lea eax, [esp+8] |
||
1265 | cmp dword [eax], 0 |
||
1266 | jz .root |
||
1267 | call fat_get_sector |
||
1268 | jmp .cmn |
||
6468 | pathoswith | 1269 | |
2288 | clevermous | 1270 | .root: |
1271 | mov eax, [eax+4] |
||
2643 | clevermous | 1272 | add eax, [ebp+FAT.ROOT_START] |
2288 | clevermous | 1273 | .cmn: |
1274 | add esp, 20 ; CF=0 |
||
1275 | pop esi |
||
6468 | pathoswith | 1276 | ret |
2288 | clevermous | 1277 | |
1278 | ;---------------------------------------------------------------- |
||
2643 | clevermous | 1279 | fat_Read: |
1280 | call fat_lock |
||
6468 | pathoswith | 1281 | call hd_find_lfn |
6845 | pathoswith | 1282 | jc .notFound |
5578 | Pathoswith | 1283 | test byte [edi+11], 0x10 ; do not allow read directories |
2288 | clevermous | 1284 | jnz .noaccess |
2643 | clevermous | 1285 | cmp dword [ebx+8], 0 |
6845 | pathoswith | 1286 | jnz .endOfFile |
5578 | Pathoswith | 1287 | mov edx, [ebx+4] ; file offset |
2643 | clevermous | 1288 | mov ecx, [ebx+12] ; size |
5578 | Pathoswith | 1289 | mov ebx, [ebx+16] ; buffer |
1290 | push ebx |
||
2288 | clevermous | 1291 | push 0 |
6037 | pathoswith | 1292 | test ecx, ecx |
1293 | jz .done |
||
2288 | clevermous | 1294 | mov eax, [edi+28] |
5578 | Pathoswith | 1295 | sub eax, edx |
1296 | jb .fileEnd |
||
2288 | clevermous | 1297 | cmp eax, ecx |
1298 | jae @f |
||
1299 | mov ecx, eax |
||
1300 | mov byte [esp], 6 |
||
1301 | @@: |
||
1302 | mov eax, [edi+20-2] |
||
1303 | mov ax, [edi+26] |
||
5578 | Pathoswith | 1304 | ; now eax=cluster, ebx=buffer for data, ecx=count, edx=position |
1305 | mov edi, [ebp+FAT.SECTORS_PER_CLUSTER] |
||
1306 | shl edi, 9 |
||
1307 | @@: |
||
2643 | clevermous | 1308 | cmp eax, 2 |
5578 | Pathoswith | 1309 | jb .fileEnd |
2643 | clevermous | 1310 | cmp eax, [ebp+FAT.fatRESERVED] |
5578 | Pathoswith | 1311 | jae .fileEnd |
1312 | sub edx, edi |
||
1313 | jc @f |
||
1314 | call get_FAT |
||
1315 | jc .noaccess2 |
||
1316 | jmp @b |
||
6845 | pathoswith | 1317 | |
1318 | .notFound: |
||
1319 | push eax |
||
1320 | jmp .ret |
||
1321 | |||
1322 | .noaccess: |
||
1323 | push ERROR_ACCESS_DENIED |
||
1324 | jmp .ret |
||
1325 | |||
1326 | .endOfFile: |
||
1327 | push ERROR_END_OF_FILE |
||
1328 | .ret: |
||
1329 | call fat_unlock |
||
6867 | pathoswith | 1330 | pop eax |
6845 | pathoswith | 1331 | xor ebx, ebx |
1332 | ret |
||
1333 | |||
5578 | Pathoswith | 1334 | @@: |
1335 | mov esi, eax |
||
2288 | clevermous | 1336 | dec eax |
1337 | dec eax |
||
5578 | Pathoswith | 1338 | imul eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
2643 | clevermous | 1339 | add eax, [ebp+FAT.DATA_START] |
5578 | Pathoswith | 1340 | add edx, edi |
1341 | jz .alignedCluster |
||
1342 | mov edi, edx |
||
1343 | shr edi, 9 |
||
1344 | add eax, edi |
||
1345 | and edx, 511 |
||
5840 | pathoswith | 1346 | cmp ecx, 512 |
1347 | jc .sectorPiece |
||
1348 | test edx, edx |
||
5578 | Pathoswith | 1349 | jz .alignedSector |
1350 | .sectorPiece: |
||
2643 | clevermous | 1351 | push eax ebx |
1352 | lea ebx, [ebp+FAT.buffer] |
||
1353 | call fs_read32_app |
||
1354 | test eax, eax |
||
2288 | clevermous | 1355 | mov eax, ebx |
1356 | pop ebx |
||
5578 | Pathoswith | 1357 | jne .noaccess3 |
1358 | add eax, edx |
||
2288 | clevermous | 1359 | push ecx |
5578 | Pathoswith | 1360 | add ecx, edx |
2288 | clevermous | 1361 | cmp ecx, 512 |
1362 | jbe @f |
||
1363 | mov ecx, 512 |
||
1364 | @@: |
||
5578 | Pathoswith | 1365 | sub ecx, edx |
2288 | clevermous | 1366 | call memmove |
1367 | sub [esp], ecx |
||
5578 | Pathoswith | 1368 | add ebx, ecx |
1369 | pop ecx eax |
||
1370 | xor edx, edx |
||
1371 | inc edi |
||
2288 | clevermous | 1372 | inc eax |
5578 | Pathoswith | 1373 | test ecx, ecx |
1374 | jz .done |
||
1375 | .alignedSector: |
||
1376 | shl edi, 9 |
||
1377 | add ecx, edi |
||
1378 | mov edi, [ebp+FAT.SECTORS_PER_CLUSTER] |
||
1379 | shl edi, 9 |
||
1380 | .alignedCluster: |
||
1381 | cmp ecx, 512 |
||
1382 | jc .sectorPiece |
||
1383 | mov edx, eax |
||
1384 | mov eax, esi |
||
1385 | @@: |
||
1386 | sub ecx, edi |
||
1387 | jbe .readEnd |
||
2288 | clevermous | 1388 | call get_FAT |
5578 | Pathoswith | 1389 | jc .noaccess4 |
1390 | cmp eax, 2 |
||
1391 | jb .fileEnd2 |
||
1392 | cmp eax, [ebp+FAT.fatRESERVED] |
||
1393 | jae .fileEnd2 |
||
1394 | inc esi |
||
1395 | cmp eax, esi |
||
1396 | jz @b |
||
1397 | .fragmentEnd: |
||
1398 | xchg eax, esi |
||
1399 | dec eax |
||
1400 | dec eax |
||
1401 | imul eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
||
1402 | add eax, [ebp+FAT.DATA_START] |
||
1403 | push ecx |
||
1404 | mov ecx, eax |
||
5840 | pathoswith | 1405 | mov eax, esi |
1406 | dec eax |
||
1407 | dec eax |
||
1408 | imul eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
||
1409 | add eax, [ebp+FAT.DATA_START] |
||
1410 | push eax |
||
1411 | .readFragment: |
||
1412 | sub ecx, edx |
||
5578 | Pathoswith | 1413 | mov eax, edx |
1414 | xor edx, edx |
||
1415 | call fs_read64_app |
||
1416 | shl ecx, 9 |
||
1417 | add ebx, ecx |
||
1418 | test eax, eax |
||
2288 | clevermous | 1419 | pop eax |
5578 | Pathoswith | 1420 | jnz .noaccess3 |
1421 | pop ecx |
||
1422 | xor edx, edx |
||
6036 | pathoswith | 1423 | jecxz .done |
5578 | Pathoswith | 1424 | jmp .alignedCluster |
6845 | pathoswith | 1425 | |
5578 | Pathoswith | 1426 | .readEnd: |
1427 | add ecx, edi |
||
1428 | mov edi, ecx |
||
1429 | and ecx, 511 |
||
1430 | shr edi, 9 |
||
1431 | dec eax |
||
1432 | dec eax |
||
1433 | imul eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
||
1434 | add eax, [ebp+FAT.DATA_START] |
||
1435 | add eax, edi |
||
5840 | pathoswith | 1436 | push ecx |
1437 | push eax |
||
1438 | mov ecx, eax |
||
5578 | Pathoswith | 1439 | jmp .readFragment |
6845 | pathoswith | 1440 | |
5578 | Pathoswith | 1441 | .noaccess3: |
2288 | clevermous | 1442 | pop eax |
5578 | Pathoswith | 1443 | .noaccess2: |
1444 | mov byte [esp], ERROR_DEVICE |
||
2288 | clevermous | 1445 | .done: |
2643 | clevermous | 1446 | call fat_unlock |
6867 | pathoswith | 1447 | pop eax edx |
2288 | clevermous | 1448 | sub ebx, edx |
1449 | ret |
||
6845 | pathoswith | 1450 | |
5578 | Pathoswith | 1451 | .fileEnd: |
1452 | mov byte [esp], ERROR_END_OF_FILE |
||
1453 | jmp .done |
||
6845 | pathoswith | 1454 | |
5578 | Pathoswith | 1455 | .noaccess4: |
1456 | mov byte [esp], ERROR_DEVICE |
||
1457 | jmp @f |
||
6845 | pathoswith | 1458 | |
5578 | Pathoswith | 1459 | .fileEnd2: |
1460 | mov byte [esp], ERROR_END_OF_FILE |
||
1461 | @@: |
||
1462 | inc esi |
||
1463 | xor ecx, ecx |
||
1464 | jmp .fragmentEnd |
||
2288 | clevermous | 1465 | |
1466 | ;---------------------------------------------------------------- |
||
2643 | clevermous | 1467 | fat_ReadFolder: |
1468 | call fat_lock |
||
1469 | mov eax, [ebp+FAT.ROOT_CLUSTER] |
||
2288 | clevermous | 1470 | cmp byte [esi], 0 |
1471 | jz .doit |
||
6468 | pathoswith | 1472 | call hd_find_lfn |
6867 | pathoswith | 1473 | jc .error |
2288 | clevermous | 1474 | test byte [edi+11], 0x10 ; do not allow read files |
6867 | pathoswith | 1475 | jz .accessDenied |
2288 | clevermous | 1476 | mov eax, [edi+20-2] |
1477 | mov ax, [edi+26] ; eax=cluster |
||
1478 | .doit: |
||
1479 | sub esp, 262*2 ; reserve space for LFN |
||
6471 | pathoswith | 1480 | push dword [ebx+8] ; cp866/UNICODE name |
2643 | clevermous | 1481 | mov edx, [ebx+16] ; pointer to buffer |
2288 | clevermous | 1482 | ; init header |
2643 | clevermous | 1483 | push eax |
2288 | clevermous | 1484 | mov edi, edx |
1485 | mov ecx, 32/4 |
||
1486 | xor eax, eax |
||
1487 | rep stosd |
||
2643 | clevermous | 1488 | pop eax |
2288 | clevermous | 1489 | mov byte [edx], 1 ; version |
1490 | mov esi, edi ; esi points to BDFE |
||
2643 | clevermous | 1491 | mov ecx, [ebx+12] ; number of blocks to read |
1492 | mov ebx, [ebx+4] ; index of the first block |
||
2288 | clevermous | 1493 | .new_cluster: |
2643 | clevermous | 1494 | mov [ebp+FAT.cluster_tmp], eax |
2288 | clevermous | 1495 | test eax, eax |
1496 | jnz @f |
||
2643 | clevermous | 1497 | cmp [ebp+FAT.fs_type], 32 |
2288 | clevermous | 1498 | jz .notfound |
2643 | clevermous | 1499 | mov eax, [ebp+FAT.ROOT_START] |
1500 | push [ebp+FAT.ROOT_SECTORS] |
||
2288 | clevermous | 1501 | push ebx |
1502 | jmp .new_sector |
||
6867 | pathoswith | 1503 | |
2288 | clevermous | 1504 | @@: |
1505 | dec eax |
||
1506 | dec eax |
||
2643 | clevermous | 1507 | imul eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
1508 | push [ebp+FAT.SECTORS_PER_CLUSTER] |
||
1509 | add eax, [ebp+FAT.DATA_START] |
||
2288 | clevermous | 1510 | push ebx |
1511 | .new_sector: |
||
2643 | clevermous | 1512 | lea ebx, [ebp+FAT.buffer] |
2288 | clevermous | 1513 | mov edi, ebx |
2643 | clevermous | 1514 | push eax |
1515 | call fs_read32_sys |
||
1516 | test eax, eax |
||
1517 | pop eax |
||
2288 | clevermous | 1518 | jnz .notfound2 |
1519 | add ebx, 512 |
||
1520 | push eax |
||
1521 | .l1: |
||
6868 | pathoswith | 1522 | push esi |
1523 | lea esi, [esp+20] |
||
2288 | clevermous | 1524 | call fat_get_name |
6868 | pathoswith | 1525 | pop esi |
2288 | clevermous | 1526 | jc .l2 |
1527 | cmp byte [edi+11], 0xF |
||
1528 | jnz .do_bdfe |
||
1529 | add edi, 0x20 |
||
1530 | cmp edi, ebx |
||
1531 | jb .do_bdfe |
||
1532 | pop eax |
||
1533 | inc eax |
||
1534 | dec dword [esp+4] |
||
1535 | jnz @f |
||
2643 | clevermous | 1536 | mov eax, [ebp+FAT.cluster_tmp] |
2288 | clevermous | 1537 | test eax, eax |
1538 | jz .done |
||
1539 | call get_FAT |
||
2643 | clevermous | 1540 | jc .notfound2 |
2288 | clevermous | 1541 | cmp eax, 2 |
1542 | jb .done |
||
2643 | clevermous | 1543 | cmp eax, [ebp+FAT.fatRESERVED] |
2288 | clevermous | 1544 | jae .done |
1545 | push eax |
||
2643 | clevermous | 1546 | mov eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
2288 | clevermous | 1547 | mov [esp+8], eax |
1548 | pop eax |
||
2643 | clevermous | 1549 | mov [ebp+FAT.cluster_tmp], eax |
2288 | clevermous | 1550 | dec eax |
1551 | dec eax |
||
2643 | clevermous | 1552 | imul eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
1553 | add eax, [ebp+FAT.DATA_START] |
||
2288 | clevermous | 1554 | @@: |
2643 | clevermous | 1555 | lea ebx, [ebp+FAT.buffer] |
2288 | clevermous | 1556 | mov edi, ebx |
2643 | clevermous | 1557 | push eax |
1558 | call fs_read32_sys |
||
1559 | test eax, eax |
||
1560 | pop eax |
||
2288 | clevermous | 1561 | jnz .notfound2 |
1562 | add ebx, 512 |
||
1563 | push eax |
||
1564 | .do_bdfe: |
||
1565 | inc dword [edx+8] ; new file found |
||
1566 | dec dword [esp+4] |
||
1567 | jns .l2 |
||
1568 | dec ecx |
||
1569 | js .l2 |
||
1570 | inc dword [edx+4] ; new file block copied |
||
2643 | clevermous | 1571 | push ebp |
1572 | lea ebp, [esp+20] |
||
2288 | clevermous | 1573 | call fat_entry_to_bdfe |
2643 | clevermous | 1574 | pop ebp |
2288 | clevermous | 1575 | .l2: |
1576 | add edi, 0x20 |
||
1577 | cmp edi, ebx |
||
1578 | jb .l1 |
||
1579 | pop eax |
||
1580 | inc eax |
||
1581 | dec dword [esp+4] |
||
1582 | jnz .new_sector |
||
2643 | clevermous | 1583 | mov eax, [ebp+FAT.cluster_tmp] |
2288 | clevermous | 1584 | test eax, eax |
1585 | jz .done |
||
1586 | call get_FAT |
||
2643 | clevermous | 1587 | jc .notfound2 |
2288 | clevermous | 1588 | cmp eax, 2 |
1589 | jb .done |
||
2643 | clevermous | 1590 | cmp eax, [ebp+FAT.fatRESERVED] |
2288 | clevermous | 1591 | jae .done |
1592 | push eax |
||
2643 | clevermous | 1593 | mov eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
2288 | clevermous | 1594 | mov [esp+8], eax |
1595 | pop eax |
||
1596 | pop ebx |
||
1597 | add esp, 4 |
||
1598 | jmp .new_cluster |
||
6867 | pathoswith | 1599 | |
2288 | clevermous | 1600 | .notfound2: |
1601 | add esp, 8 |
||
1602 | .notfound: |
||
6868 | pathoswith | 1603 | add esp, 262*2+4 |
6867 | pathoswith | 1604 | push ERROR_DEVICE |
1605 | jmp @f |
||
1606 | |||
2288 | clevermous | 1607 | .done: |
6868 | pathoswith | 1608 | add esp, 262*2+12 |
6867 | pathoswith | 1609 | pushd 0 |
2288 | clevermous | 1610 | dec ecx |
1611 | js @f |
||
6867 | pathoswith | 1612 | mov byte [esp], ERROR_END_OF_FILE |
2288 | clevermous | 1613 | @@: |
6867 | pathoswith | 1614 | mov ebx, [edx+4] |
1615 | .ret: |
||
2643 | clevermous | 1616 | call fat_unlock |
1617 | pop eax |
||
2288 | clevermous | 1618 | ret |
1619 | |||
6867 | pathoswith | 1620 | .error: |
1621 | push eax |
||
1622 | xor ebx, ebx |
||
1623 | jmp .ret |
||
1624 | |||
1625 | .accessDenied: |
||
1626 | push ERROR_ACCESS_DENIED |
||
1627 | xor ebx, ebx |
||
1628 | jmp .ret |
||
1629 | |||
4273 | clevermous | 1630 | fat1x_root_next: |
2643 | clevermous | 1631 | push ecx |
1632 | lea ecx, [ebp+FAT.buffer+0x200-0x20] |
||
1633 | cmp edi, ecx |
||
4273 | clevermous | 1634 | jae fat1x_root_next_sector |
6867 | pathoswith | 1635 | add edi, 0x20 |
1636 | @@: |
||
2643 | clevermous | 1637 | pop ecx |
6867 | pathoswith | 1638 | ret |
1639 | |||
1640 | fat1x_root_next_write: |
||
1641 | push ecx |
||
1642 | lea ecx, [ebp+FAT.buffer+0x200] |
||
1643 | cmp edi, ecx |
||
1644 | jc @b |
||
1645 | call fat1x_root_end_write |
||
4273 | clevermous | 1646 | fat1x_root_next_sector: |
2643 | clevermous | 1647 | push [ebp+FAT.longname_sec2] |
1648 | pop [ebp+FAT.longname_sec1] |
||
2288 | clevermous | 1649 | mov ecx, [eax+4] |
1650 | push ecx |
||
2643 | clevermous | 1651 | add ecx, [ebp+FAT.ROOT_START] |
1652 | mov [ebp+FAT.longname_sec2], ecx |
||
2288 | clevermous | 1653 | pop ecx |
1654 | inc ecx |
||
1655 | mov [eax+4], ecx |
||
2643 | clevermous | 1656 | cmp ecx, [ebp+FAT.ROOT_SECTORS] |
6867 | pathoswith | 1657 | jnc fat_notroot_next_err |
2288 | clevermous | 1658 | pop ecx |
4273 | clevermous | 1659 | fat1x_root_first: |
2288 | clevermous | 1660 | mov eax, [eax+4] |
2643 | clevermous | 1661 | add eax, [ebp+FAT.ROOT_START] |
2288 | clevermous | 1662 | push ebx |
2643 | clevermous | 1663 | lea edi, [ebp+FAT.buffer] |
2288 | clevermous | 1664 | mov ebx, edi |
2643 | clevermous | 1665 | call fs_read32_sys |
2288 | clevermous | 1666 | pop ebx |
2643 | clevermous | 1667 | test eax, eax |
6867 | pathoswith | 1668 | jz @f |
1669 | movi eax, ERROR_DEVICE |
||
2288 | clevermous | 1670 | stc |
6867 | pathoswith | 1671 | @@: |
2288 | clevermous | 1672 | ret |
6867 | pathoswith | 1673 | |
4273 | clevermous | 1674 | fat1x_root_begin_write: |
2288 | clevermous | 1675 | push edi eax |
4273 | clevermous | 1676 | call fat1x_root_first |
2288 | clevermous | 1677 | pop eax edi |
1678 | ret |
||
6867 | pathoswith | 1679 | |
4273 | clevermous | 1680 | fat1x_root_end_write: |
2288 | clevermous | 1681 | pusha |
1682 | mov eax, [eax+4] |
||
2643 | clevermous | 1683 | add eax, [ebp+FAT.ROOT_START] |
1684 | lea ebx, [ebp+FAT.buffer] |
||
1685 | call fs_write32_sys |
||
2288 | clevermous | 1686 | popa |
1687 | ret |
||
6867 | pathoswith | 1688 | |
1689 | fat_notroot_next: |
||
2643 | clevermous | 1690 | push ecx |
6867 | pathoswith | 1691 | lea ecx, [ebp+FAT.buffer+0x200-0x20] |
2643 | clevermous | 1692 | cmp edi, ecx |
6867 | pathoswith | 1693 | jae fat_notroot_next_sector |
1694 | add edi, 0x20 |
||
1695 | @@: |
||
2643 | clevermous | 1696 | pop ecx |
2288 | clevermous | 1697 | ret |
1698 | |||
6867 | pathoswith | 1699 | fat_notroot_next_write: |
2643 | clevermous | 1700 | push ecx |
6867 | pathoswith | 1701 | lea ecx, [ebp+FAT.buffer+0x200] |
2643 | clevermous | 1702 | cmp edi, ecx |
6867 | pathoswith | 1703 | jc @b |
1704 | push eax |
||
1705 | call fat_notroot_end_write |
||
1706 | pop eax |
||
2288 | clevermous | 1707 | fat_notroot_next_sector: |
2643 | clevermous | 1708 | push [ebp+FAT.longname_sec2] |
1709 | pop [ebp+FAT.longname_sec1] |
||
2288 | clevermous | 1710 | push eax |
1711 | call fat_get_sector |
||
2643 | clevermous | 1712 | mov [ebp+FAT.longname_sec2], eax |
2288 | clevermous | 1713 | pop eax |
1714 | mov ecx, [eax+4] |
||
1715 | inc ecx |
||
2643 | clevermous | 1716 | cmp ecx, [ebp+FAT.SECTORS_PER_CLUSTER] |
2288 | clevermous | 1717 | jae fat_notroot_next_cluster |
1718 | mov [eax+4], ecx |
||
1719 | jmp @f |
||
6867 | pathoswith | 1720 | |
1721 | fat_notroot_next_err: |
||
1722 | pop ecx |
||
1723 | movi eax, ERROR_FILE_NOT_FOUND |
||
1724 | fat1x_root_extend_dir: |
||
1725 | stc |
||
1726 | ret |
||
1727 | |||
2288 | clevermous | 1728 | fat_notroot_next_cluster: |
1729 | push eax |
||
1730 | mov eax, [eax] |
||
1731 | call get_FAT |
||
1732 | mov ecx, eax |
||
1733 | pop eax |
||
2643 | clevermous | 1734 | jc fat_notroot_first.deverr |
1735 | cmp ecx, 2 |
||
1736 | jb fat_notroot_next_err |
||
1737 | cmp ecx, [ebp+FAT.fatRESERVED] |
||
2288 | clevermous | 1738 | jae fat_notroot_next_err |
1739 | mov [eax], ecx |
||
1740 | and dword [eax+4], 0 |
||
1741 | @@: |
||
1742 | pop ecx |
||
1743 | fat_notroot_first: |
||
1744 | call fat_get_sector |
||
1745 | push ebx |
||
2643 | clevermous | 1746 | lea edi, [ebp+FAT.buffer] |
2288 | clevermous | 1747 | mov ebx, edi |
2643 | clevermous | 1748 | call fs_read32_sys |
2288 | clevermous | 1749 | pop ebx |
2643 | clevermous | 1750 | test eax, eax |
1751 | jz .ret ; CF=0 |
||
1752 | push ecx |
||
1753 | .deverr: |
||
1754 | pop ecx |
||
1755 | mov eax, ERROR_DEVICE |
||
1756 | stc |
||
1757 | .ret: |
||
1758 | ret |
||
6867 | pathoswith | 1759 | |
2288 | clevermous | 1760 | fat_notroot_begin_write: |
1761 | push eax edi |
||
1762 | call fat_notroot_first |
||
1763 | pop edi eax |
||
1764 | ret |
||
6867 | pathoswith | 1765 | |
2288 | clevermous | 1766 | fat_notroot_end_write: |
1767 | call fat_get_sector |
||
1768 | push ebx |
||
2643 | clevermous | 1769 | lea ebx, [ebp+FAT.buffer] |
1770 | call fs_write32_sys |
||
2288 | clevermous | 1771 | pop ebx |
1772 | ret |
||
6867 | pathoswith | 1773 | |
1774 | fat_notroot_extend_dir.writeerr: |
||
1775 | pop edx |
||
2288 | clevermous | 1776 | @@: |
1777 | pop eax |
||
6867 | pathoswith | 1778 | ret |
1779 | |||
2288 | clevermous | 1780 | fat_notroot_extend_dir: |
1781 | push eax |
||
1782 | call get_free_FAT |
||
6867 | pathoswith | 1783 | jc @b |
2288 | clevermous | 1784 | push edx |
2643 | clevermous | 1785 | mov edx, [ebp+FAT.fatEND] |
2288 | clevermous | 1786 | call set_FAT |
2643 | clevermous | 1787 | jc .writeerr |
2288 | clevermous | 1788 | mov edx, eax |
1789 | mov eax, [esp+4] |
||
1790 | mov eax, [eax] |
||
1791 | push edx |
||
1792 | call set_FAT |
||
1793 | pop edx |
||
6867 | pathoswith | 1794 | jc .writeerr |
2288 | clevermous | 1795 | push ecx |
1796 | or ecx, -1 |
||
1797 | call add_disk_free_space |
||
1798 | mov ecx, 512/4 |
||
2643 | clevermous | 1799 | lea edi, [ebp+FAT.buffer] |
2288 | clevermous | 1800 | push edi |
1801 | xor eax, eax |
||
1802 | rep stosd |
||
1803 | pop edi |
||
1804 | pop ecx |
||
1805 | mov eax, [esp+4] |
||
1806 | mov [eax], edx |
||
1807 | and dword [eax+4], 0 |
||
1808 | pop edx |
||
1809 | mov eax, [eax] |
||
1810 | dec eax |
||
1811 | dec eax |
||
1812 | push ebx ecx |
||
2643 | clevermous | 1813 | mov ecx, [ebp+FAT.SECTORS_PER_CLUSTER] |
2288 | clevermous | 1814 | imul eax, ecx |
2643 | clevermous | 1815 | add eax, [ebp+FAT.DATA_START] |
2288 | clevermous | 1816 | mov ebx, edi |
1817 | @@: |
||
2643 | clevermous | 1818 | push eax |
1819 | call fs_write32_sys |
||
1820 | pop eax |
||
2288 | clevermous | 1821 | inc eax |
1822 | loop @b |
||
1823 | pop ecx ebx eax |
||
1824 | clc |
||
1825 | ret |
||
1826 | |||
1827 | fat_get_sector: |
||
1828 | push ecx |
||
1829 | mov ecx, [eax] |
||
1830 | dec ecx |
||
1831 | dec ecx |
||
2643 | clevermous | 1832 | imul ecx, [ebp+FAT.SECTORS_PER_CLUSTER] |
1833 | add ecx, [ebp+FAT.DATA_START] |
||
2288 | clevermous | 1834 | add ecx, [eax+4] |
1835 | mov eax, ecx |
||
1836 | pop ecx |
||
1837 | ret |
||
1838 | |||
2643 | clevermous | 1839 | ;---------------------------------------------------------------- |
1840 | fat_CreateFolder: |
||
6917 | pathoswith | 1841 | mov [ebp+FAT.createOption], 0 |
6468 | pathoswith | 1842 | jmp @f |
2643 | clevermous | 1843 | |
6468 | pathoswith | 1844 | fat_CreateFile: |
6917 | pathoswith | 1845 | mov [ebp+FAT.createOption], 1 |
6468 | pathoswith | 1846 | @@: |
2643 | clevermous | 1847 | call fat_lock |
1848 | mov ecx, [ebx+12] |
||
1849 | mov edx, [ebx+16] |
||
6917 | pathoswith | 1850 | .rename: |
2288 | clevermous | 1851 | pushad |
1852 | xor edi, edi |
||
1853 | push esi |
||
1854 | @@: |
||
1855 | lodsb |
||
1856 | test al, al |
||
1857 | jz @f |
||
1858 | cmp al, '/' |
||
1859 | jnz @b |
||
1860 | lea edi, [esi-1] |
||
1861 | jmp @b |
||
6468 | pathoswith | 1862 | |
2288 | clevermous | 1863 | @@: |
1864 | pop esi |
||
1865 | test edi, edi |
||
1866 | jnz .noroot |
||
2643 | clevermous | 1867 | mov edx, [ebp+FAT.ROOT_CLUSTER] |
1868 | cmp [ebp+FAT.fs_type], 32 |
||
2288 | clevermous | 1869 | jz .pushnotroot |
2643 | clevermous | 1870 | xor edx, edx |
1871 | push edx |
||
4273 | clevermous | 1872 | push fat1x_root_extend_dir |
1873 | push fat1x_root_end_write |
||
1874 | push fat1x_root_next_write |
||
1875 | push fat1x_root_begin_write |
||
2643 | clevermous | 1876 | push edx |
1877 | push edx |
||
4273 | clevermous | 1878 | push fat1x_root_first |
1879 | push fat1x_root_next |
||
2288 | clevermous | 1880 | jmp .common1 |
6468 | pathoswith | 1881 | |
6867 | pathoswith | 1882 | .retNotFound: |
1883 | movi eax, ERROR_FILE_NOT_FOUND |
||
1884 | jmp .ret1 |
||
1885 | |||
1886 | .noAccess: |
||
1887 | movi eax, ERROR_ACCESS_DENIED |
||
1888 | .ret1: |
||
1889 | mov [esp+28], eax |
||
1890 | call fat_unlock |
||
1891 | popad |
||
1892 | xor ebx, ebx |
||
1893 | ret |
||
1894 | |||
1895 | .full: |
||
1896 | movi eax, ERROR_DISK_FULL |
||
1897 | jmp .ret1 |
||
1898 | |||
2288 | clevermous | 1899 | .noroot: |
1900 | cmp byte [edi+1], 0 |
||
6867 | pathoswith | 1901 | jz .noAccess |
2288 | clevermous | 1902 | ; check existence |
1903 | mov byte [edi], 0 |
||
1904 | push edi |
||
6468 | pathoswith | 1905 | call hd_find_lfn |
2288 | clevermous | 1906 | pop esi |
1907 | mov byte [esi], '/' |
||
6867 | pathoswith | 1908 | jc .retNotFound |
2288 | clevermous | 1909 | inc esi |
6867 | pathoswith | 1910 | test byte [edi+11], 0x10 |
1911 | jz .noAccess ; file |
||
2643 | clevermous | 1912 | mov edx, [edi+20-2] |
6867 | pathoswith | 1913 | mov dx, [edi+26] |
1914 | movi eax, ERROR_FS_FAIL |
||
2643 | clevermous | 1915 | cmp edx, 2 |
2288 | clevermous | 1916 | jb .ret1 |
1917 | .pushnotroot: |
||
2643 | clevermous | 1918 | push edx |
2288 | clevermous | 1919 | push fat_notroot_extend_dir |
1920 | push fat_notroot_end_write |
||
1921 | push fat_notroot_next_write |
||
1922 | push fat_notroot_begin_write |
||
1923 | push 0 |
||
2643 | clevermous | 1924 | push edx |
2288 | clevermous | 1925 | push fat_notroot_first |
1926 | push fat_notroot_next |
||
1927 | .common1: |
||
1928 | call fat_find_lfn |
||
1929 | jc .notfound |
||
1930 | test byte [edi+11], 10h |
||
1931 | jz .exists_file |
||
6468 | pathoswith | 1932 | ; found directory |
2643 | clevermous | 1933 | add esp, 36 |
1934 | call fat_unlock |
||
2288 | clevermous | 1935 | popad |
6917 | pathoswith | 1936 | xor eax, eax |
1937 | cmp [ebp+FAT.createOption], 0 |
||
2288 | clevermous | 1938 | jz @f |
6917 | pathoswith | 1939 | mov al, ERROR_ACCESS_DENIED |
2288 | clevermous | 1940 | @@: |
1941 | xor ebx, ebx |
||
1942 | ret |
||
6468 | pathoswith | 1943 | |
2288 | clevermous | 1944 | .exists_file: |
6917 | pathoswith | 1945 | cmp [ebp+FAT.createOption], 1 |
2288 | clevermous | 1946 | jz @f |
2643 | clevermous | 1947 | add esp, 36 |
6867 | pathoswith | 1948 | jmp .noAccess |
6468 | pathoswith | 1949 | |
1950 | @@: ; delete FAT chain |
||
2288 | clevermous | 1951 | push edi |
1952 | xor eax, eax |
||
1953 | mov dword [edi+28], eax ; zero size |
||
1954 | xor ecx, ecx |
||
1955 | mov eax, [edi+20-2] |
||
1956 | mov ax, [edi+26] |
||
1957 | mov word [edi+20], cx |
||
1958 | mov word [edi+26], cx |
||
1959 | test eax, eax |
||
1960 | jz .done1 |
||
1961 | @@: |
||
2643 | clevermous | 1962 | cmp eax, [ebp+FAT.fatRESERVED] |
2288 | clevermous | 1963 | jae .done1 |
1964 | xor edx, edx |
||
1965 | call set_FAT |
||
1966 | mov eax, edx |
||
2643 | clevermous | 1967 | jc .done1 |
2288 | clevermous | 1968 | inc ecx |
1969 | jmp @b |
||
6468 | pathoswith | 1970 | |
1971 | .short_name_found: |
||
1972 | pop ecx edi esi |
||
1973 | call fat_next_short_name |
||
1974 | jnc .test_short_name_loop |
||
1975 | .disk_full: |
||
1976 | add esp, 12+36 |
||
6867 | pathoswith | 1977 | jmp .full |
6468 | pathoswith | 1978 | |
1979 | .notfound: ; generate short name |
||
2288 | clevermous | 1980 | call fat_name_is_legal |
1981 | jc @f |
||
2643 | clevermous | 1982 | add esp, 36 |
6867 | pathoswith | 1983 | jmp .retNotFound |
6468 | pathoswith | 1984 | |
2288 | clevermous | 1985 | @@: |
1986 | sub esp, 12 |
||
1987 | mov edi, esp |
||
1988 | call fat_gen_short_name |
||
1989 | .test_short_name_loop: |
||
1990 | push esi edi ecx |
||
1991 | mov esi, edi |
||
1992 | lea eax, [esp+12+12+8] |
||
2643 | clevermous | 1993 | mov edx, [eax+24] |
1994 | mov [eax], edx |
||
2288 | clevermous | 1995 | and dword [eax+4], 0 |
1996 | call dword [eax-4] |
||
1997 | jc .found |
||
1998 | .test_short_name_entry: |
||
1999 | cmp byte [edi+11], 0xF |
||
2000 | jz .test_short_name_cont |
||
2001 | mov ecx, 11 |
||
2002 | push esi edi |
||
2003 | repz cmpsb |
||
2004 | pop edi esi |
||
2005 | jz .short_name_found |
||
2006 | .test_short_name_cont: |
||
2007 | lea eax, [esp+12+12+8] |
||
2008 | call dword [eax-8] |
||
2009 | jnc .test_short_name_entry |
||
2010 | .found: |
||
2011 | pop ecx edi esi |
||
2012 | ; now find space in directory |
||
2013 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
||
2014 | mov al, '~' |
||
2015 | push ecx edi |
||
2016 | mov ecx, 8 |
||
2017 | repnz scasb |
||
3598 | clevermous | 2018 | movi eax, 1 ; 1 entry |
2288 | clevermous | 2019 | jnz .notilde |
2020 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
||
6471 | pathoswith | 2021 | xor ecx, ecx |
2022 | push esi |
||
2288 | clevermous | 2023 | @@: |
6471 | pathoswith | 2024 | call utf8to16 |
2025 | inc ecx |
||
2026 | test ax, ax |
||
2027 | jnz @b |
||
2028 | pop esi |
||
2029 | mov eax, ecx |
||
2030 | add eax, 12+13-1 |
||
2288 | clevermous | 2031 | mov ecx, 13 |
2032 | cdq |
||
2033 | div ecx |
||
2034 | .notilde: |
||
2035 | push -1 |
||
2036 | push -1 |
||
2037 | push -1 |
||
2038 | ; find |
||
2039 | xor ecx, ecx |
||
2040 | push eax |
||
2041 | lea eax, [esp+16+8+12+8] |
||
2643 | clevermous | 2042 | mov edx, [eax+24] |
2043 | mov [eax], edx |
||
2288 | clevermous | 2044 | and dword [eax+4], 0 |
2045 | call dword [eax-4] |
||
2046 | pop eax |
||
2047 | jnc .scan_dir |
||
2048 | .fsfrfe3: |
||
2643 | clevermous | 2049 | add esp, 12+8+12+36 |
6867 | pathoswith | 2050 | movi eax, ERROR_DEVICE |
2051 | jmp .ret1 |
||
6468 | pathoswith | 2052 | |
2288 | clevermous | 2053 | .scan_dir: |
2054 | cmp byte [edi], 0 |
||
2055 | jz .free |
||
2056 | cmp byte [edi], 0xE5 |
||
2057 | jz .free |
||
2058 | xor ecx, ecx |
||
2059 | .scan_cont: |
||
2060 | push eax |
||
2061 | lea eax, [esp+16+8+12+8] |
||
2062 | call dword [eax-8] |
||
2643 | clevermous | 2063 | mov edx, eax |
2288 | clevermous | 2064 | pop eax |
2065 | jnc .scan_dir |
||
2643 | clevermous | 2066 | cmp edx, ERROR_DEVICE |
2067 | jz .fsfrfe3 |
||
2288 | clevermous | 2068 | push eax |
2069 | lea eax, [esp+16+8+12+8] |
||
2070 | call dword [eax+20] ; extend directory |
||
2071 | pop eax |
||
2072 | jnc .scan_dir |
||
2643 | clevermous | 2073 | add esp, 12+8+12+36 |
6867 | pathoswith | 2074 | jmp .full |
6468 | pathoswith | 2075 | |
2288 | clevermous | 2076 | .free: |
2077 | test ecx, ecx |
||
2078 | jnz @f |
||
2079 | mov [esp], edi |
||
2080 | mov ecx, [esp+12+8+12+8] |
||
2081 | mov [esp+4], ecx |
||
2082 | mov ecx, [esp+12+8+12+12] |
||
2083 | mov [esp+8], ecx |
||
2084 | xor ecx, ecx |
||
2085 | @@: |
||
2086 | inc ecx |
||
2087 | cmp ecx, eax |
||
2088 | jb .scan_cont |
||
2089 | ; found! |
||
2643 | clevermous | 2090 | push esi ecx |
6917 | pathoswith | 2091 | ; If creating a directory, allocate one data cluster or fail immediately if this is impossible. |
2092 | ; This prevents from creating an invalid directory entry on a full disk. |
||
2093 | cmp [ebp+FAT.createOption], 0 |
||
2094 | jnz .notFolder |
||
2643 | clevermous | 2095 | call get_free_FAT |
2096 | jnc @f |
||
2097 | add esp, 8+12+8 |
||
2098 | jmp .disk_full |
||
6468 | pathoswith | 2099 | |
2643 | clevermous | 2100 | @@: |
6471 | pathoswith | 2101 | mov [esp+8+12+8+12+36+20], eax ; store the cluster somewhere |
6917 | pathoswith | 2102 | .notFolder: ; calculate name checksum |
2288 | clevermous | 2103 | mov esi, [esp+8+12] |
2104 | mov ecx, 11 |
||
2105 | xor eax, eax |
||
2106 | @@: |
||
2107 | ror al, 1 |
||
2108 | add al, [esi] |
||
2109 | inc esi |
||
2110 | loop @b |
||
6471 | pathoswith | 2111 | pop ecx esi edi |
2288 | clevermous | 2112 | pop dword [esp+8+12+12] |
2113 | pop dword [esp+8+12+12] |
||
2114 | ; edi points to first entry in free chunk |
||
2115 | dec ecx |
||
2116 | jz .nolfn |
||
6471 | pathoswith | 2117 | push esi eax |
2288 | clevermous | 2118 | lea eax, [esp+8+8+12+8] |
6471 | pathoswith | 2119 | call dword [eax+8] ; begin write |
2288 | clevermous | 2120 | mov al, 40h |
2121 | .writelfn: |
||
2122 | or al, cl |
||
6471 | pathoswith | 2123 | stosb |
2288 | clevermous | 2124 | mov esi, [esp+4] |
2125 | push ecx |
||
2126 | dec ecx |
||
6471 | pathoswith | 2127 | jz @f |
2288 | clevermous | 2128 | imul ecx, 13 |
6471 | pathoswith | 2129 | .scroll: |
2130 | call utf8to16 |
||
2131 | loop .scroll |
||
2132 | @@: |
||
2288 | clevermous | 2133 | mov cl, 5 |
4273 | clevermous | 2134 | call fat_read_symbols |
2288 | clevermous | 2135 | mov ax, 0xF |
2136 | stosw |
||
2137 | mov al, [esp+4] |
||
2138 | stosb |
||
2139 | mov cl, 6 |
||
4273 | clevermous | 2140 | call fat_read_symbols |
2288 | clevermous | 2141 | xor eax, eax |
2142 | stosw |
||
2143 | mov cl, 2 |
||
4273 | clevermous | 2144 | call fat_read_symbols |
2288 | clevermous | 2145 | pop ecx |
2146 | lea eax, [esp+8+8+12+8] |
||
6471 | pathoswith | 2147 | call dword [eax+12] ; next write |
2288 | clevermous | 2148 | xor eax, eax |
2149 | loop .writelfn |
||
6471 | pathoswith | 2150 | pop eax esi |
2288 | clevermous | 2151 | .nolfn: |
6917 | pathoswith | 2152 | pop esi |
2153 | add esp, 16 |
||
2288 | clevermous | 2154 | mov ecx, 11 |
2155 | rep movsb |
||
6917 | pathoswith | 2156 | cmp [ebp+FAT.createOption], 2 |
2157 | jz .copy |
||
2288 | clevermous | 2158 | mov word [edi], 20h ; attributes |
2159 | sub edi, 11 |
||
2160 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
||
2161 | call get_time_for_file |
||
2162 | mov [edi+14], ax ; creation time |
||
2163 | mov [edi+22], ax ; last write time |
||
2164 | call get_date_for_file |
||
2165 | mov [edi+16], ax ; creation date |
||
2166 | mov [edi+24], ax ; last write date |
||
2167 | mov [edi+18], ax ; last access date |
||
2168 | mov word [edi+20], cx ; high word of cluster |
||
2169 | mov word [edi+26], cx ; low word of cluster - to be filled |
||
2170 | mov dword [edi+28], ecx ; file size - to be filled |
||
6917 | pathoswith | 2171 | cmp [ebp+FAT.createOption], 0 |
2172 | jnz .doit |
||
2288 | clevermous | 2173 | ; create directory |
2174 | mov byte [edi+11], 10h ; attributes: folder |
||
2643 | clevermous | 2175 | mov esi, edi |
2176 | mov eax, [esp+36+20] ; extract saved cluster |
||
2177 | mov [esp+36+20], edi ; this is needed for calculating arg of add_disk_free_space! |
||
2288 | clevermous | 2178 | push ecx |
2643 | clevermous | 2179 | mov ecx, [ebp+FAT.SECTORS_PER_CLUSTER] |
2288 | clevermous | 2180 | shl ecx, 9 |
2643 | clevermous | 2181 | push ecx |
2182 | push edi |
||
2288 | clevermous | 2183 | jmp .doit2 |
6468 | pathoswith | 2184 | |
6917 | pathoswith | 2185 | .copy: |
2186 | lea esi, [esp+72+11] |
||
2187 | mov cl, 21 |
||
2188 | rep movsb |
||
2189 | sub edi, 32 |
||
2190 | jmp .doit |
||
2191 | |||
6468 | pathoswith | 2192 | .done1: |
2193 | pop edi |
||
2194 | call get_time_for_file |
||
2195 | mov [edi+22], ax |
||
2196 | call get_date_for_file |
||
2197 | mov [edi+24], ax |
||
2198 | mov [edi+18], ax |
||
2199 | or byte [edi+11], 20h ; set 'archive' attribute |
||
2288 | clevermous | 2200 | .doit: |
2643 | clevermous | 2201 | mov esi, [esp+36+20] |
2288 | clevermous | 2202 | lea eax, [esp+8] |
2203 | call dword [eax+16] ; flush directory |
||
2204 | push ecx |
||
2643 | clevermous | 2205 | mov ecx, [esp+4+36+24] |
6917 | pathoswith | 2206 | xor eax, eax |
2288 | clevermous | 2207 | test ecx, ecx |
2208 | jz .done |
||
6917 | pathoswith | 2209 | push ecx edi |
2288 | clevermous | 2210 | call get_free_FAT |
2211 | jc .diskfull |
||
2643 | clevermous | 2212 | .doit2: |
2288 | clevermous | 2213 | push eax |
2214 | mov [edi+26], ax |
||
2215 | shr eax, 16 |
||
2216 | mov [edi+20], ax |
||
2217 | lea eax, [esp+16+8] |
||
2218 | call dword [eax+16] ; flush directory |
||
2219 | pop eax |
||
2643 | clevermous | 2220 | mov edx, [ebp+FAT.fatEND] |
2288 | clevermous | 2221 | call set_FAT |
2222 | .write_cluster: |
||
2223 | push eax |
||
2224 | dec eax |
||
2225 | dec eax |
||
2643 | clevermous | 2226 | imul eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
2227 | add eax, [ebp+FAT.DATA_START] |
||
2228 | push [ebp+FAT.SECTORS_PER_CLUSTER] |
||
2288 | clevermous | 2229 | .write_sector: |
6917 | pathoswith | 2230 | cmp [ebp+FAT.createOption], 0 |
2231 | jz .writedir |
||
2288 | clevermous | 2232 | mov ecx, 512 |
2643 | clevermous | 2233 | cmp dword [esp+12], ecx |
2288 | clevermous | 2234 | jb .writeshort |
2235 | ; we can write directly from given buffer |
||
2236 | mov ebx, esi |
||
2237 | add esi, ecx |
||
2238 | jmp .writecommon |
||
6468 | pathoswith | 2239 | |
6867 | pathoswith | 2240 | .writedir: |
2241 | push 512 |
||
2242 | lea edi, [ebp+FAT.buffer] |
||
2243 | mov ebx, edi |
||
2244 | mov ecx, [ebp+FAT.SECTORS_PER_CLUSTER] |
||
2245 | shl ecx, 9 |
||
2246 | cmp ecx, [esp+16] |
||
2247 | jnz .writedircont |
||
2248 | dec dword [esp+20] |
||
2249 | push esi |
||
2250 | mov ecx, 32/4 |
||
2251 | rep movsd |
||
2252 | pop esi |
||
2253 | mov dword [edi-32], '. ' |
||
2254 | mov dword [edi-32+4], ' ' |
||
2255 | mov dword [edi-32+8], ' ' |
||
2256 | mov byte [edi-32+11], 10h |
||
2257 | push esi |
||
2258 | mov ecx, 32/4 |
||
2259 | rep movsd |
||
2260 | pop esi |
||
2261 | mov dword [edi-32], '.. ' |
||
2262 | mov dword [edi-32+4], ' ' |
||
2263 | mov dword [edi-32+8], ' ' |
||
2264 | mov byte [edi-32+11], 10h |
||
2265 | mov ecx, [esp+20+36] |
||
2266 | cmp ecx, [ebp+FAT.ROOT_CLUSTER] |
||
2267 | jnz @f |
||
2268 | xor ecx, ecx |
||
2269 | @@: |
||
2270 | mov word [edi-32+26], cx |
||
2271 | shr ecx, 16 |
||
2272 | mov [edi-32+20], cx |
||
2273 | jmp .writedircont |
||
2274 | |||
2288 | clevermous | 2275 | .writeshort: |
2643 | clevermous | 2276 | mov ecx, [esp+12] |
2288 | clevermous | 2277 | push ecx |
2643 | clevermous | 2278 | lea edi, [ebp+FAT.buffer] |
2288 | clevermous | 2279 | mov ebx, edi |
2280 | rep movsb |
||
2281 | .writedircont: |
||
2643 | clevermous | 2282 | lea ecx, [ebp+FAT.buffer+0x200] |
2288 | clevermous | 2283 | sub ecx, edi |
2284 | push eax |
||
2285 | xor eax, eax |
||
2286 | rep stosb |
||
2287 | pop eax |
||
2288 | pop ecx |
||
2289 | .writecommon: |
||
2643 | clevermous | 2290 | push eax |
2291 | call fs_write32_app |
||
2292 | test eax, eax |
||
2293 | pop eax |
||
2288 | clevermous | 2294 | jnz .writeerr |
2295 | inc eax |
||
2643 | clevermous | 2296 | sub dword [esp+12], ecx |
2288 | clevermous | 2297 | jz .writedone |
2643 | clevermous | 2298 | dec dword [esp] |
2288 | clevermous | 2299 | jnz .write_sector |
2643 | clevermous | 2300 | pop eax |
2288 | clevermous | 2301 | ; allocate new cluster |
2302 | pop eax |
||
2303 | mov ecx, eax |
||
2304 | call get_free_FAT |
||
2305 | jc .diskfull |
||
2643 | clevermous | 2306 | mov edx, [ebp+FAT.fatEND] |
2288 | clevermous | 2307 | call set_FAT |
2308 | xchg eax, ecx |
||
2309 | mov edx, ecx |
||
2310 | call set_FAT |
||
2311 | xchg eax, ecx |
||
2312 | jmp .write_cluster |
||
6468 | pathoswith | 2313 | |
2288 | clevermous | 2314 | .diskfull: |
2315 | mov eax, ERROR_DISK_FULL |
||
2316 | jmp .ret |
||
6468 | pathoswith | 2317 | |
2288 | clevermous | 2318 | .writeerr: |
2643 | clevermous | 2319 | pop eax eax |
2288 | clevermous | 2320 | sub esi, ecx |
2643 | clevermous | 2321 | mov eax, ERROR_DEVICE |
2288 | clevermous | 2322 | jmp .ret |
6468 | pathoswith | 2323 | |
2288 | clevermous | 2324 | .writedone: |
2643 | clevermous | 2325 | pop eax eax |
2288 | clevermous | 2326 | xor eax, eax |
2327 | .ret: |
||
2328 | pop edi ecx |
||
6917 | pathoswith | 2329 | inc ecx |
2330 | .done: |
||
2643 | clevermous | 2331 | sub esi, [esp+4+36+20] |
2332 | mov [esp+4+36+28], eax |
||
2333 | mov [esp+4+36+16], esi |
||
6917 | pathoswith | 2334 | jecxz @f |
2643 | clevermous | 2335 | lea eax, [esp+12] |
2288 | clevermous | 2336 | call dword [eax+8] |
2643 | clevermous | 2337 | mov [edi+28], esi |
2288 | clevermous | 2338 | call dword [eax+16] |
6917 | pathoswith | 2339 | @@: |
2643 | clevermous | 2340 | lea eax, [esi+511] |
2288 | clevermous | 2341 | shr eax, 9 |
2643 | clevermous | 2342 | mov ecx, [ebp+FAT.SECTORS_PER_CLUSTER] |
2288 | clevermous | 2343 | lea eax, [eax+ecx-1] |
2344 | xor edx, edx |
||
2345 | div ecx |
||
2643 | clevermous | 2346 | pop ecx |
2288 | clevermous | 2347 | sub ecx, eax |
2348 | call add_disk_free_space |
||
2643 | clevermous | 2349 | add esp, 36 |
6917 | pathoswith | 2350 | cmp [ebp+FAT.createOption], 2 |
2351 | jz @f |
||
2288 | clevermous | 2352 | call update_disk |
2643 | clevermous | 2353 | call fat_unlock |
6917 | pathoswith | 2354 | @@: |
2288 | clevermous | 2355 | popad |
2356 | ret |
||
6468 | pathoswith | 2357 | |
2288 | clevermous | 2358 | @@: |
6471 | pathoswith | 2359 | or eax, -1 |
2360 | rep stosw |
||
4273 | clevermous | 2361 | ret |
2362 | |||
2363 | fat_read_symbols: |
||
6471 | pathoswith | 2364 | test esi, esi |
2365 | jz @b |
||
2366 | call utf8to16 |
||
4273 | clevermous | 2367 | stosw |
6471 | pathoswith | 2368 | test ax, ax |
2369 | jnz @f |
||
2370 | xor esi, esi |
||
2371 | @@: |
||
4273 | clevermous | 2372 | loop fat_read_symbols |
2373 | ret |
||
2374 | |||
2643 | clevermous | 2375 | ;---------------------------------------------------------------- |
2376 | fat_Write: |
||
2377 | call fat_lock |
||
6468 | pathoswith | 2378 | call hd_find_lfn |
6845 | pathoswith | 2379 | jc .error |
2643 | clevermous | 2380 | cmp dword [ebx+8], 0 |
6845 | pathoswith | 2381 | jnz .eof ; FAT does not support files larger than 4GB |
2643 | clevermous | 2382 | mov ecx, [ebx+12] |
2383 | mov edx, [ebx+16] |
||
2384 | mov ebx, [ebx+4] |
||
2288 | clevermous | 2385 | ; now edi points to direntry, ebx=start byte to write, |
2386 | ; ecx=number of bytes to write, edx=data pointer |
||
2387 | ; extend file if needed |
||
2388 | add ecx, ebx |
||
2389 | jc .eof ; FAT does not support files larger than 4GB |
||
2643 | clevermous | 2390 | push edx |
2288 | clevermous | 2391 | push eax ; save directory sector |
2392 | push 0 ; return value=0 |
||
2393 | call get_time_for_file |
||
2394 | mov [edi+22], ax ; last write time |
||
2395 | call get_date_for_file |
||
2396 | mov [edi+24], ax ; last write date |
||
2397 | mov [edi+18], ax ; last access date |
||
2398 | push dword [edi+28] ; save current file size |
||
2399 | cmp ecx, [edi+28] |
||
2400 | jbe .length_ok |
||
2401 | cmp ecx, ebx |
||
2402 | jz .length_ok |
||
2403 | call hd_extend_file |
||
2404 | jnc .length_ok |
||
2405 | mov [esp+4], eax |
||
2406 | ; hd_extend_file can return three error codes: FAT table error, device error or disk full. |
||
2407 | ; First two cases are fatal errors, in third case we may write some data |
||
2408 | cmp al, ERROR_DISK_FULL |
||
6845 | pathoswith | 2409 | jnz @f |
2288 | clevermous | 2410 | ; correct number of bytes to write |
2411 | mov ecx, [edi+28] |
||
2412 | cmp ecx, ebx |
||
2413 | ja .length_ok |
||
2643 | clevermous | 2414 | push 0 |
2288 | clevermous | 2415 | .ret: |
6939 | pathoswith | 2416 | pop eax eax eax ecx ecx |
2417 | sub edx, ecx |
||
2418 | push eax edx |
||
2288 | clevermous | 2419 | call update_disk |
6939 | pathoswith | 2420 | pop ebx |
2288 | clevermous | 2421 | @@: |
2643 | clevermous | 2422 | call fat_unlock |
6867 | pathoswith | 2423 | pop eax |
6845 | pathoswith | 2424 | ret |
2425 | |||
6939 | pathoswith | 2426 | .error: |
2427 | push eax |
||
2428 | jmp @b |
||
2429 | |||
6845 | pathoswith | 2430 | .eof: |
2431 | push ERROR_END_OF_FILE |
||
6846 | pathoswith | 2432 | xor ebx, ebx |
6845 | pathoswith | 2433 | jmp @b |
2434 | |||
2435 | .device_err2: |
||
2643 | clevermous | 2436 | pop ecx |
6845 | pathoswith | 2437 | .device_err: |
2438 | mov byte [esp+8], ERROR_DEVICE |
||
2439 | jmp .ret |
||
2440 | |||
2441 | .fat_err: |
||
2442 | mov byte [esp+8], ERROR_FS_FAIL |
||
2443 | jmp .ret |
||
2444 | |||
2288 | clevermous | 2445 | .length_ok: |
2446 | mov esi, [edi+28] |
||
2447 | mov eax, [edi+20-2] |
||
2448 | mov ax, [edi+26] |
||
2449 | mov edi, eax ; edi=current cluster |
||
2643 | clevermous | 2450 | push 0 ; current sector in cluster |
2288 | clevermous | 2451 | ; save directory |
2643 | clevermous | 2452 | mov eax, [esp+12] |
2288 | clevermous | 2453 | push ebx |
2643 | clevermous | 2454 | lea ebx, [ebp+FAT.buffer] |
2455 | call fs_write32_sys |
||
2288 | clevermous | 2456 | pop ebx |
2643 | clevermous | 2457 | test eax, eax |
6845 | pathoswith | 2458 | jnz .device_err |
2288 | clevermous | 2459 | ; now ebx=start pos, ecx=end pos, both lie inside file |
2460 | sub ecx, ebx |
||
2461 | jz .ret |
||
2462 | .write_loop: |
||
2463 | ; skip unmodified sectors |
||
2643 | clevermous | 2464 | cmp dword [esp+4], 0x200 |
2288 | clevermous | 2465 | jb .modify |
2466 | sub ebx, 0x200 |
||
2467 | jae .skip |
||
2468 | add ebx, 0x200 |
||
2469 | .modify: |
||
2470 | ; get length of data in current sector |
||
2471 | push ecx |
||
2472 | sub ebx, 0x200 |
||
2473 | jb .hasdata |
||
2474 | neg ebx |
||
2475 | xor ecx, ecx |
||
2476 | jmp @f |
||
2477 | .hasdata: |
||
2478 | neg ebx |
||
2479 | cmp ecx, ebx |
||
2480 | jbe @f |
||
2481 | mov ecx, ebx |
||
2482 | @@: |
||
2483 | ; get current sector number |
||
2484 | mov eax, edi |
||
2485 | dec eax |
||
2486 | dec eax |
||
2643 | clevermous | 2487 | imul eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
2488 | add eax, [ebp+FAT.DATA_START] |
||
2489 | add eax, [esp+4] |
||
2288 | clevermous | 2490 | ; load sector if needed |
2643 | clevermous | 2491 | cmp dword [esp+8], 0 ; we don't need to read uninitialized data |
2288 | clevermous | 2492 | jz .noread |
2493 | cmp ecx, 0x200 ; we don't need to read sector if it is fully rewritten |
||
2494 | jz .noread |
||
2495 | cmp ecx, esi ; (same for the last sector) |
||
2496 | jz .noread |
||
2643 | clevermous | 2497 | push eax ebx |
2498 | lea ebx, [ebp+FAT.buffer] |
||
2499 | call fs_read32_app |
||
2500 | test eax, eax |
||
2501 | pop ebx eax |
||
6845 | pathoswith | 2502 | jnz .device_err2 |
2288 | clevermous | 2503 | .noread: |
2504 | ; zero uninitialized data if file was extended (because hd_extend_file does not this) |
||
2505 | push eax ecx edi |
||
2506 | xor eax, eax |
||
2507 | mov ecx, 0x200 |
||
2643 | clevermous | 2508 | sub ecx, [esp+8+12] |
2288 | clevermous | 2509 | jbe @f |
2643 | clevermous | 2510 | lea edi, [ebp+FAT.buffer] |
2511 | add edi, [esp+8+12] |
||
2288 | clevermous | 2512 | rep stosb |
2513 | @@: |
||
2514 | ; zero uninitialized data in the last sector |
||
2515 | mov ecx, 0x200 |
||
2516 | sub ecx, esi |
||
2517 | jbe @f |
||
2643 | clevermous | 2518 | lea edi, [ebp+FAT.buffer+esi] |
2288 | clevermous | 2519 | rep stosb |
2520 | @@: |
||
2521 | pop edi ecx |
||
2522 | ; copy new data |
||
2523 | mov eax, edx |
||
2524 | neg ebx |
||
2525 | jecxz @f |
||
2643 | clevermous | 2526 | lea ebx, [ebp+FAT.buffer+0x200+ebx] |
2288 | clevermous | 2527 | call memmove |
2528 | xor ebx, ebx |
||
2529 | @@: |
||
2530 | pop eax |
||
2531 | ; save sector |
||
2532 | push ebx |
||
2643 | clevermous | 2533 | lea ebx, [ebp+FAT.buffer] |
2534 | call fs_write32_app |
||
2288 | clevermous | 2535 | pop ebx |
2643 | clevermous | 2536 | test eax, eax |
2288 | clevermous | 2537 | jnz .device_err2 |
2538 | add edx, ecx |
||
2539 | sub [esp], ecx |
||
2540 | pop ecx |
||
2541 | jz .ret |
||
2542 | .skip: |
||
2543 | ; next sector |
||
2643 | clevermous | 2544 | pop eax |
2545 | inc eax |
||
2546 | push eax |
||
2547 | cmp eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
||
2288 | clevermous | 2548 | jb @f |
2643 | clevermous | 2549 | and dword [esp], 0 |
2288 | clevermous | 2550 | mov eax, edi |
2551 | call get_FAT |
||
2552 | mov edi, eax |
||
2643 | clevermous | 2553 | jc .device_err |
2554 | cmp edi, 2 |
||
2555 | jb .fat_err |
||
2556 | cmp edi, [ebp+FAT.fatRESERVED] |
||
2557 | jae .fat_err |
||
2288 | clevermous | 2558 | @@: |
2559 | sub esi, 0x200 |
||
2560 | jae @f |
||
2561 | xor esi, esi |
||
2562 | @@: |
||
2643 | clevermous | 2563 | sub dword [esp+4], 0x200 |
2288 | clevermous | 2564 | jae @f |
2643 | clevermous | 2565 | and dword [esp+4], 0 |
2288 | clevermous | 2566 | @@: |
2567 | jmp .write_loop |
||
2568 | |||
2569 | hd_extend_file.zero_size: |
||
2570 | xor eax, eax |
||
2571 | jmp hd_extend_file.start_extend |
||
2572 | |||
2573 | ; extends file on hd to given size (new data area is undefined) |
||
2574 | ; in: edi->direntry, ecx=new size |
||
2575 | ; out: CF=0 => OK, eax=0 |
||
6468 | pathoswith | 2576 | ; CF=1 => error, eax=code (ERROR_FS_FAIL or ERROR_DISK_FULL or ERROR_DEVICE) |
2288 | clevermous | 2577 | hd_extend_file: |
2643 | clevermous | 2578 | push esi |
2579 | mov esi, [ebp+FAT.SECTORS_PER_CLUSTER] |
||
2580 | imul esi, [ebp+FAT.BYTES_PER_SECTOR] |
||
2288 | clevermous | 2581 | push ecx |
2582 | ; find the last cluster of file |
||
2583 | mov eax, [edi+20-2] |
||
2584 | mov ax, [edi+26] |
||
2585 | mov ecx, [edi+28] |
||
2586 | jecxz .zero_size |
||
2587 | .last_loop: |
||
2643 | clevermous | 2588 | sub ecx, esi |
2288 | clevermous | 2589 | jbe .last_found |
2590 | call get_FAT |
||
2643 | clevermous | 2591 | jnc @f |
2288 | clevermous | 2592 | .device_err: |
2593 | pop ecx |
||
2594 | .device_err2: |
||
2643 | clevermous | 2595 | pop esi |
2596 | push ERROR_DEVICE |
||
2288 | clevermous | 2597 | .ret_err: |
2598 | pop eax |
||
2599 | stc |
||
2600 | ret |
||
2601 | @@: |
||
2602 | cmp eax, 2 |
||
2603 | jb .fat_err |
||
2643 | clevermous | 2604 | cmp eax, [ebp+FAT.fatRESERVED] |
2288 | clevermous | 2605 | jb .last_loop |
2606 | .fat_err: |
||
2643 | clevermous | 2607 | pop ecx esi |
6468 | pathoswith | 2608 | push ERROR_FS_FAIL |
2288 | clevermous | 2609 | jmp .ret_err |
2610 | .last_found: |
||
2611 | push eax |
||
2612 | call get_FAT |
||
2643 | clevermous | 2613 | jnc @f |
2288 | clevermous | 2614 | pop eax |
2615 | jmp .device_err |
||
2616 | @@: |
||
2643 | clevermous | 2617 | cmp eax, [ebp+FAT.fatRESERVED] |
2288 | clevermous | 2618 | pop eax |
2619 | jb .fat_err |
||
2620 | ; set length to full number of clusters |
||
2621 | sub [edi+28], ecx |
||
2622 | .start_extend: |
||
2623 | pop ecx |
||
2624 | ; now do extend |
||
2625 | push edx |
||
2626 | mov edx, 2 ; start scan from cluster 2 |
||
2627 | .extend_loop: |
||
2628 | cmp [edi+28], ecx |
||
2629 | jae .extend_done |
||
2630 | ; add new cluster |
||
2631 | push eax |
||
2632 | call get_free_FAT |
||
2633 | jc .disk_full |
||
2643 | clevermous | 2634 | mov edx, [ebp+FAT.fatEND] |
2288 | clevermous | 2635 | call set_FAT |
2636 | mov edx, eax |
||
2637 | pop eax |
||
2638 | test eax, eax |
||
2639 | jz .first_cluster |
||
2640 | push edx |
||
2641 | call set_FAT |
||
2642 | pop edx |
||
2643 | jmp @f |
||
2644 | .first_cluster: |
||
2645 | ror edx, 16 |
||
2646 | mov [edi+20], dx |
||
2647 | ror edx, 16 |
||
2648 | mov [edi+26], dx |
||
2649 | @@: |
||
2650 | push ecx |
||
2651 | mov ecx, -1 |
||
2652 | call add_disk_free_space |
||
2653 | pop ecx |
||
2654 | mov eax, edx |
||
2643 | clevermous | 2655 | add [edi+28], esi |
2288 | clevermous | 2656 | jmp .extend_loop |
2657 | .extend_done: |
||
2658 | mov [edi+28], ecx |
||
2643 | clevermous | 2659 | pop edx esi |
2288 | clevermous | 2660 | xor eax, eax ; CF=0 |
2661 | ret |
||
2662 | .device_err3: |
||
2663 | pop edx |
||
2664 | jmp .device_err2 |
||
2665 | .disk_full: |
||
2643 | clevermous | 2666 | pop eax edx esi |
3598 | clevermous | 2667 | movi eax, ERROR_DISK_FULL |
2288 | clevermous | 2668 | stc |
2669 | ret |
||
2670 | |||
2671 | ;---------------------------------------------------------------- |
||
2643 | clevermous | 2672 | fat_SetFileEnd: |
2673 | call fat_lock |
||
6468 | pathoswith | 2674 | call hd_find_lfn |
6845 | pathoswith | 2675 | jc .reteax |
2288 | clevermous | 2676 | ; must not be directory |
2677 | test byte [edi+11], 10h |
||
2643 | clevermous | 2678 | jnz .access_denied |
2288 | clevermous | 2679 | ; file size must not exceed 4 Gb |
2643 | clevermous | 2680 | cmp dword [ebx+8], 0 |
6845 | pathoswith | 2681 | jnz .endOfFile |
2288 | clevermous | 2682 | push eax ; save directory sector |
2683 | ; set file modification date/time to current |
||
6867 | pathoswith | 2684 | call get_time_for_file |
2685 | mov [edi+22], ax ; last write |
||
2686 | call get_date_for_file |
||
2687 | mov [edi+24], ax ; last write |
||
2688 | mov [edi+18], ax ; last access |
||
2643 | clevermous | 2689 | mov eax, [ebx+4] |
2288 | clevermous | 2690 | cmp eax, [edi+28] |
2691 | jb .truncate |
||
2692 | ja .expand |
||
2693 | pop eax |
||
2643 | clevermous | 2694 | lea ebx, [ebp+FAT.buffer] |
2695 | call fs_write32_sys |
||
2696 | test eax, eax |
||
6845 | pathoswith | 2697 | jnz .errorDevice |
2698 | push 0 |
||
2699 | jmp .ret |
||
2700 | |||
2701 | .access_denied: |
||
2702 | push ERROR_ACCESS_DENIED |
||
2703 | jmp .ret |
||
2704 | |||
2705 | .endOfFile: |
||
2706 | push ERROR_END_OF_FILE |
||
2707 | jmp .ret |
||
2708 | |||
2709 | .errorDevice: |
||
2643 | clevermous | 2710 | push ERROR_DEVICE |
2711 | jmp .ret |
||
6845 | pathoswith | 2712 | |
2288 | clevermous | 2713 | .expand: |
2714 | push ebx ebp ecx |
||
2715 | push dword [edi+28] ; save old size |
||
2716 | mov ecx, eax |
||
2717 | call hd_extend_file |
||
2718 | push eax ; return code |
||
2719 | jnc .expand_ok |
||
2720 | cmp al, ERROR_DISK_FULL |
||
6845 | pathoswith | 2721 | jnz .pop_ret |
2722 | .expand_ok: ; save directory |
||
2288 | clevermous | 2723 | mov eax, [edi+28] |
2724 | xchg eax, [esp+20] |
||
2643 | clevermous | 2725 | lea ebx, [ebp+FAT.buffer] |
2726 | call fs_write32_sys |
||
2727 | test eax, eax |
||
6850 | pathoswith | 2728 | jnz .pop_ret11 |
2729 | mov eax, [esp+20] |
||
2730 | sub eax, [esp+4] |
||
2731 | cmp eax, 1000001h |
||
2732 | jnc .pop_ret |
||
2288 | clevermous | 2733 | mov eax, [edi+20-2] |
2734 | mov ax, [edi+26] |
||
2735 | mov edi, eax |
||
2643 | clevermous | 2736 | test edi, edi |
2737 | jz .pop_ret |
||
2288 | clevermous | 2738 | ; now zero new data |
2643 | clevermous | 2739 | push 0 |
2740 | ; edi=current cluster, [esp]=sector in cluster |
||
2741 | ; [esp+24]=new size, [esp+8]=old size, [esp+4]=return code |
||
2288 | clevermous | 2742 | .zero_loop: |
2643 | clevermous | 2743 | cmp edi, 2 |
2744 | jb .error_fat |
||
2745 | cmp edi, [ebp+FAT.fatRESERVED] |
||
2746 | jae .error_fat |
||
2747 | sub dword [esp+8], 0x200 |
||
2288 | clevermous | 2748 | jae .next_cluster |
2749 | lea eax, [edi-2] |
||
2643 | clevermous | 2750 | imul eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
2751 | add eax, [ebp+FAT.DATA_START] |
||
2752 | add eax, [esp] |
||
2753 | cmp dword [esp+8], -0x200 |
||
2288 | clevermous | 2754 | jz .noread |
2643 | clevermous | 2755 | push eax |
2756 | lea ebx, [ebp+FAT.buffer] |
||
2757 | call fs_read32_app |
||
2758 | test eax, eax |
||
2759 | pop eax |
||
2288 | clevermous | 2760 | jnz .err_next |
2761 | .noread: |
||
2643 | clevermous | 2762 | mov ecx, [esp+8] |
2288 | clevermous | 2763 | neg ecx |
2764 | push edi |
||
2643 | clevermous | 2765 | lea edi, [ebp+FAT.buffer+0x200] |
2766 | add edi, [esp+12] |
||
2288 | clevermous | 2767 | push eax |
2768 | xor eax, eax |
||
2643 | clevermous | 2769 | mov [esp+16], eax |
2288 | clevermous | 2770 | rep stosb |
2771 | pop eax |
||
2772 | pop edi |
||
2643 | clevermous | 2773 | call fs_write32_app |
2774 | test eax, eax |
||
2288 | clevermous | 2775 | jz .next_cluster |
2776 | .err_next: |
||
2643 | clevermous | 2777 | mov byte [esp+4], ERROR_DEVICE |
2288 | clevermous | 2778 | .next_cluster: |
2643 | clevermous | 2779 | pop eax |
2288 | clevermous | 2780 | sub dword [esp+20], 0x200 |
2781 | jbe .pop_ret |
||
2643 | clevermous | 2782 | inc eax |
2783 | push eax |
||
2784 | cmp eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
||
2288 | clevermous | 2785 | jb .zero_loop |
2643 | clevermous | 2786 | and dword [esp], 0 |
2288 | clevermous | 2787 | mov eax, edi |
2788 | call get_FAT |
||
2789 | mov edi, eax |
||
2643 | clevermous | 2790 | jnc .zero_loop |
2791 | pop eax |
||
6845 | pathoswith | 2792 | .pop_ret11: |
2793 | mov byte [esp], ERROR_DEVICE |
||
2794 | .pop_ret: |
||
2795 | call update_disk |
||
2796 | pop eax ecx ecx ebp ebx ecx |
||
2797 | .reteax: |
||
2798 | push eax |
||
2799 | .ret: |
||
2800 | call fat_unlock |
||
6867 | pathoswith | 2801 | pop eax |
6845 | pathoswith | 2802 | ret |
2803 | |||
2804 | .error_fat: |
||
2805 | pop eax |
||
2806 | mov byte [esp], ERROR_FS_FAIL |
||
2807 | jmp .pop_ret |
||
2808 | |||
2809 | .error_fat2: |
||
2810 | pop eax ecx eax |
||
2811 | call update_disk |
||
2812 | push ERROR_FS_FAIL |
||
2813 | jmp .ret |
||
2814 | |||
2288 | clevermous | 2815 | .truncate: |
2816 | mov [edi+28], eax |
||
2817 | push ecx |
||
2818 | mov ecx, [edi+20-2] |
||
2819 | mov cx, [edi+26] |
||
2820 | push eax |
||
2821 | test eax, eax |
||
2822 | jz .zero_size |
||
6845 | pathoswith | 2823 | @@: ; find new last cluster |
2643 | clevermous | 2824 | cmp ecx, 2 |
2825 | jb .error_fat2 |
||
2826 | cmp ecx, [ebp+FAT.fatRESERVED] |
||
2827 | jae .error_fat2 |
||
2828 | mov eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
||
2288 | clevermous | 2829 | shl eax, 9 |
2830 | sub [esp], eax |
||
2831 | jbe @f |
||
2832 | mov eax, ecx |
||
2833 | call get_FAT |
||
2834 | mov ecx, eax |
||
2643 | clevermous | 2835 | jnc @b |
2288 | clevermous | 2836 | .device_err3: |
6845 | pathoswith | 2837 | pop eax ecx eax |
2643 | clevermous | 2838 | call update_disk |
6845 | pathoswith | 2839 | push ERROR_DEVICE |
2840 | jmp .ret |
||
2841 | |||
2288 | clevermous | 2842 | @@: |
2843 | ; we will zero data at the end of last sector - remember it |
||
2844 | push ecx |
||
2845 | ; terminate FAT chain |
||
2846 | push edx |
||
2847 | mov eax, ecx |
||
2643 | clevermous | 2848 | mov edx, [ebp+FAT.fatEND] |
2288 | clevermous | 2849 | call set_FAT |
2850 | mov eax, edx |
||
2851 | pop edx |
||
2643 | clevermous | 2852 | jnc @f |
2288 | clevermous | 2853 | .device_err4: |
2854 | pop ecx |
||
2855 | jmp .device_err3 |
||
6845 | pathoswith | 2856 | |
2288 | clevermous | 2857 | .zero_size: |
2858 | and word [edi+20], 0 |
||
2859 | and word [edi+26], 0 |
||
2860 | push 0 |
||
2861 | mov eax, ecx |
||
2862 | @@: |
||
2863 | ; delete FAT chain |
||
2864 | call clear_cluster_chain |
||
2643 | clevermous | 2865 | jc .device_err4 |
2288 | clevermous | 2866 | ; save directory |
2867 | mov eax, [esp+12] |
||
2868 | push ebx |
||
2643 | clevermous | 2869 | lea ebx, [ebp+FAT.buffer] |
2870 | call fs_write32_sys |
||
2288 | clevermous | 2871 | pop ebx |
2643 | clevermous | 2872 | test eax, eax |
2288 | clevermous | 2873 | jnz .device_err4 |
2874 | ; zero last sector, ignore errors |
||
2875 | pop ecx |
||
2876 | pop eax |
||
2877 | dec ecx |
||
2643 | clevermous | 2878 | imul ecx, [ebp+FAT.SECTORS_PER_CLUSTER] |
2879 | add ecx, [ebp+FAT.DATA_START] |
||
2288 | clevermous | 2880 | push eax |
2881 | sar eax, 9 |
||
2882 | add ecx, eax |
||
2883 | pop eax |
||
2884 | and eax, 0x1FF |
||
2885 | jz .truncate_done |
||
2886 | push ebx eax |
||
2887 | mov eax, ecx |
||
2643 | clevermous | 2888 | lea ebx, [ebp+FAT.buffer] |
2889 | call fs_read32_app |
||
2288 | clevermous | 2890 | pop eax |
2643 | clevermous | 2891 | lea edi, [ebp+FAT.buffer+eax] |
2288 | clevermous | 2892 | push ecx |
2893 | mov ecx, 0x200 |
||
2894 | sub ecx, eax |
||
2895 | xor eax, eax |
||
2896 | rep stosb |
||
2897 | pop eax |
||
2643 | clevermous | 2898 | call fs_write32_app |
2288 | clevermous | 2899 | pop ebx |
2900 | .truncate_done: |
||
6867 | pathoswith | 2901 | pop ecx eax |
2288 | clevermous | 2902 | call update_disk |
2643 | clevermous | 2903 | call fat_unlock |
2288 | clevermous | 2904 | xor eax, eax |
2905 | ret |
||
2906 | |||
2643 | clevermous | 2907 | ;---------------------------------------------------------------- |
2908 | fat_GetFileInfo: |
||
2288 | clevermous | 2909 | cmp byte [esi], 0 |
6868 | pathoswith | 2910 | jz .volume |
2643 | clevermous | 2911 | call fat_lock |
6468 | pathoswith | 2912 | call hd_find_lfn |
6867 | pathoswith | 2913 | jc @f |
2643 | clevermous | 2914 | push ebp |
2915 | xor ebp, ebp |
||
2916 | mov esi, [ebx+16] |
||
2917 | mov dword [esi+4], ebp |
||
2918 | call fat_entry_to_bdfe2 |
||
2919 | pop ebp |
||
2920 | xor eax, eax |
||
6867 | pathoswith | 2921 | @@: |
2643 | clevermous | 2922 | push eax |
2923 | call fat_unlock |
||
2924 | pop eax |
||
6876 | pathoswith | 2925 | @@: |
2643 | clevermous | 2926 | ret |
2288 | clevermous | 2927 | |
6868 | pathoswith | 2928 | .volume: |
2929 | mov eax, dword[ebp+FAT.Length] |
||
2930 | mov edx, dword[ebp+FAT.Length+4] |
||
2931 | mov edi, [ebx+16] |
||
2932 | shld edx, eax, 9 |
||
2933 | shl eax, 9 |
||
2934 | mov [edi+36], edx |
||
2935 | mov [edi+32], eax |
||
2936 | mov eax, [ebx+8] |
||
2937 | mov byte [edi], 8 |
||
2938 | mov [edi+4], eax |
||
6876 | pathoswith | 2939 | test eax, eax |
2940 | jz @b |
||
6868 | pathoswith | 2941 | lea esi, [ebp+FAT.volumeLabel] |
2942 | mov ecx, 11 |
||
2943 | @@: |
||
2944 | mov byte [esi+ecx], 0 |
||
2945 | dec ecx |
||
2946 | jz @f |
||
2947 | cmp byte [esi+ecx], ' ' |
||
2948 | jz @b |
||
2949 | @@: |
||
2950 | mov cl, 12 |
||
2951 | add edi, 40 |
||
2952 | cmp eax, 2 |
||
2953 | jz @f |
||
2954 | rep movsb |
||
2955 | xor eax, eax |
||
2956 | ret |
||
2957 | |||
2958 | @@: |
||
2959 | lodsb |
||
2960 | stosw |
||
2961 | loop @b |
||
2962 | ret |
||
2963 | |||
2643 | clevermous | 2964 | ;---------------------------------------------------------------- |
2965 | fat_SetFileInfo: |
||
2966 | call fat_lock |
||
6468 | pathoswith | 2967 | call hd_find_lfn |
6867 | pathoswith | 2968 | jc @f |
2288 | clevermous | 2969 | push eax |
2643 | clevermous | 2970 | mov edx, [ebx+16] |
2288 | clevermous | 2971 | call bdfe_to_fat_entry |
2972 | pop eax |
||
2643 | clevermous | 2973 | lea ebx, [ebp+FAT.buffer] |
2974 | call fs_write32_sys |
||
2288 | clevermous | 2975 | call update_disk |
2976 | xor eax, eax |
||
6867 | pathoswith | 2977 | @@: |
2643 | clevermous | 2978 | push eax |
2979 | call fat_unlock |
||
2980 | pop eax |
||
2981 | ret |
||
2288 | clevermous | 2982 | |
2983 | ;---------------------------------------------------------------- |
||
2643 | clevermous | 2984 | fat_Delete: |
2985 | call fat_lock |
||
2986 | and [ebp+FAT.longname_sec1], 0 |
||
2987 | and [ebp+FAT.longname_sec2], 0 |
||
6468 | pathoswith | 2988 | call hd_find_lfn |
6845 | pathoswith | 2989 | jc .notFound |
2288 | clevermous | 2990 | cmp dword [edi], '. ' |
2991 | jz .access_denied2 |
||
2992 | cmp dword [edi], '.. ' |
||
2993 | jz .access_denied2 |
||
2994 | test byte [edi+11], 10h |
||
2995 | jz .dodel |
||
2996 | ; we can delete only empty folders! |
||
2997 | pushad |
||
2643 | clevermous | 2998 | mov esi, [edi+20-2] |
2999 | mov si, [edi+26] |
||
2288 | clevermous | 3000 | xor ecx, ecx |
2643 | clevermous | 3001 | lea eax, [esi-2] |
3002 | imul eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
||
3003 | add eax, [ebp+FAT.DATA_START] |
||
3004 | lea ebx, [ebp+FAT.buffer] |
||
3005 | call fs_read32_sys |
||
3006 | test eax, eax |
||
2288 | clevermous | 3007 | jnz .err1 |
2643 | clevermous | 3008 | lea eax, [ebx+0x200] |
2288 | clevermous | 3009 | add ebx, 2*0x20 |
3010 | .checkempty: |
||
3011 | cmp byte [ebx], 0 |
||
3012 | jz .empty |
||
3013 | cmp byte [ebx], 0xE5 |
||
3014 | jnz .notempty |
||
3015 | add ebx, 0x20 |
||
2643 | clevermous | 3016 | cmp ebx, eax |
2288 | clevermous | 3017 | jb .checkempty |
3018 | inc ecx |
||
2643 | clevermous | 3019 | cmp ecx, [ebp+FAT.SECTORS_PER_CLUSTER] |
2288 | clevermous | 3020 | jb @f |
2643 | clevermous | 3021 | mov eax, esi |
2288 | clevermous | 3022 | call get_FAT |
2643 | clevermous | 3023 | jc .err1 |
3174 | clevermous | 3024 | cmp eax, 2 |
3025 | jb .error_fat |
||
3026 | cmp eax, [ebp+FAT.fatRESERVED] |
||
3027 | jae .empty |
||
2643 | clevermous | 3028 | mov esi, eax |
2288 | clevermous | 3029 | xor ecx, ecx |
3030 | @@: |
||
2643 | clevermous | 3031 | lea eax, [esi-2] |
3032 | imul eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
||
3033 | add eax, [ebp+FAT.DATA_START] |
||
2288 | clevermous | 3034 | add eax, ecx |
2643 | clevermous | 3035 | lea ebx, [ebp+FAT.buffer] |
3036 | call fs_read32_sys |
||
3037 | test eax, eax |
||
3038 | lea eax, [ebx+0x200] |
||
2288 | clevermous | 3039 | jz .checkempty |
3040 | .err1: |
||
3041 | popad |
||
3042 | .err2: |
||
6845 | pathoswith | 3043 | push ERROR_DEVICE |
3044 | .ret: |
||
2643 | clevermous | 3045 | call fat_unlock |
6867 | pathoswith | 3046 | pop eax |
2288 | clevermous | 3047 | ret |
6845 | pathoswith | 3048 | |
3049 | .notFound: |
||
3050 | push ERROR_FILE_NOT_FOUND |
||
3051 | jmp .ret |
||
3052 | |||
3174 | clevermous | 3053 | .error_fat: |
3054 | popad |
||
6845 | pathoswith | 3055 | push ERROR_FS_FAIL |
3056 | jmp .ret |
||
3057 | |||
2288 | clevermous | 3058 | .notempty: |
3059 | popad |
||
3060 | .access_denied2: |
||
6845 | pathoswith | 3061 | push ERROR_ACCESS_DENIED |
3062 | jmp .ret |
||
3063 | |||
2288 | clevermous | 3064 | .empty: |
3065 | popad |
||
2643 | clevermous | 3066 | push eax ebx |
3067 | lea ebx, [ebp+FAT.buffer] |
||
3068 | call fs_read32_sys |
||
3069 | test eax, eax |
||
3070 | pop ebx eax |
||
2288 | clevermous | 3071 | jnz .err2 |
3072 | .dodel: |
||
3073 | push eax |
||
3074 | mov eax, [edi+20-2] |
||
3075 | mov ax, [edi+26] |
||
3076 | xchg eax, [esp] |
||
3077 | ; delete folder entry |
||
3078 | mov byte [edi], 0xE5 |
||
3079 | ; delete LFN (if present) |
||
3080 | .lfndel: |
||
2643 | clevermous | 3081 | lea edx, [ebp+FAT.buffer] |
3082 | cmp edi, edx |
||
2288 | clevermous | 3083 | ja @f |
2643 | clevermous | 3084 | cmp [ebp+FAT.longname_sec2], 0 |
2288 | clevermous | 3085 | jz .lfndone |
2643 | clevermous | 3086 | push [ebp+FAT.longname_sec2] |
3087 | push [ebp+FAT.longname_sec1] |
||
3088 | pop [ebp+FAT.longname_sec2] |
||
3089 | and [ebp+FAT.longname_sec1], 0 |
||
2288 | clevermous | 3090 | push ebx |
2643 | clevermous | 3091 | mov ebx, edx |
3092 | call fs_write32_sys |
||
2288 | clevermous | 3093 | mov eax, [esp+4] |
2643 | clevermous | 3094 | call fs_read32_sys |
2288 | clevermous | 3095 | pop ebx |
3096 | pop eax |
||
2643 | clevermous | 3097 | lea edi, [ebp+FAT.buffer+0x200] |
2288 | clevermous | 3098 | @@: |
3099 | sub edi, 0x20 |
||
3100 | cmp byte [edi], 0xE5 |
||
3101 | jz .lfndone |
||
3102 | cmp byte [edi+11], 0xF |
||
3103 | jnz .lfndone |
||
3104 | mov byte [edi], 0xE5 |
||
3105 | jmp .lfndel |
||
3106 | .lfndone: |
||
3107 | push ebx |
||
2643 | clevermous | 3108 | lea ebx, [ebp+FAT.buffer] |
3109 | call fs_write32_sys |
||
2288 | clevermous | 3110 | pop ebx |
3111 | ; delete FAT chain |
||
3112 | pop eax |
||
3113 | call clear_cluster_chain |
||
3114 | call update_disk |
||
2643 | clevermous | 3115 | call fat_unlock |
2288 | clevermous | 3116 | xor eax, eax |
3117 | ret |
||
6917 | pathoswith | 3118 | |
3119 | ;---------------------------------------------------------------- |
||
3120 | fat_Rename: |
||
3121 | ; in: edi -> new path string in UTF-8 |
||
3122 | push esi edi |
||
3123 | call fat_lock |
||
3124 | call hd_find_lfn |
||
3125 | pop ebx |
||
3126 | jc .error |
||
3127 | sub esp, 32 |
||
3128 | mov esi, edi |
||
3129 | mov edi, esp |
||
3130 | mov ecx, 8 |
||
3131 | rep movsd |
||
3132 | mov [ebp+FAT.createOption], 2 |
||
3133 | mov esi, ebx |
||
3134 | call fat_CreateFile.rename |
||
3135 | add esp, 32 |
||
3136 | pop esi |
||
3137 | test eax, eax |
||
3138 | jnz .ret |
||
3139 | push eax |
||
3140 | mov [ebp+FAT.longname_sec1], eax |
||
3141 | mov [ebp+FAT.longname_sec2], eax |
||
3142 | call hd_find_lfn |
||
3143 | jc .error |
||
3144 | mov byte [edi], 0xE5 |
||
3145 | jmp fat_Delete.lfndel |
||
3146 | |||
3147 | .error: |
||
3148 | push eax |
||
3149 | call fat_unlock |
||
3150 | pop eax ebx |
||
3151 | .ret: |
||
3152 | ret=>=>>65536 |