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Rev | Author | Line No. | Line |
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2288 | clevermous | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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6080 | pathoswith | 3 | ;; Copyright (C) KolibriOS team 2004-2016. All rights reserved. ;; |
2288 | clevermous | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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7 | |||
8 | $Revision: 6080 $ |
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9 | |||
5954 | pathoswith | 10 | ; NTFS driver |
11 | |||
12 | ; Basic concepts: |
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13 | ; File is a FileRecord in the $MFT. |
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14 | ; $MFT is a file, that consists of FileRecords and starts with FileRecord of itself. |
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15 | ; FileRecord (FILE) consists of a header and attributes. |
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16 | ; Attribute consists of a header and a body. |
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17 | ; Attribute's body can be inside (resident) or outside of FileRecord. |
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18 | ; File's data is a body of $Data (80h) attribute. |
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19 | ; FileRecords is a data of the $MFT file. |
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20 | ; Directory is a file, that consists of index nodes. |
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21 | ; Resident index node is always located in a body of $IndexRoot (90h) attribute. |
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22 | ; Body of $IndexAllocation (A0h) attribute is always non resident |
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23 | ; and consists of IndexRecords. |
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24 | ; IndexRecord (INDX) consists of a header and an index node. |
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25 | ; Index node consists of a header and indexes. |
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26 | ; Index consists of a header and a copy of indexed attribute's body. |
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27 | ; Directories index $Filename (30h) attribute of all existing files. |
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28 | ; $IndexRoot and $IndexAllocation attributes of a directory has a name — $I30. |
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29 | |||
30 | ; Offsets: |
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31 | ; record header |
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32 | updateSequenceOffset = 4 |
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33 | updateSequenceSize = 6 |
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34 | reuseCounter = 16 |
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35 | hardLinkCounter = 12h |
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36 | attributeOffset = 14h |
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37 | recordFlags = 16h |
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38 | recordRealSize = 18h |
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39 | recordAllocatedSize = 1ch |
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5994 | pathoswith | 40 | baseRecordReference = 20h ; for auxiliary records |
41 | baseRecordReuse = 26h |
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5954 | pathoswith | 42 | newAttributeID = 28h |
43 | ; attribute header |
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44 | attributeType = 0 |
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45 | sizeWithHeader = 4 |
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46 | nonResidentFlag = 8 |
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47 | nameLength = 9 |
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48 | nameOffset = 10 |
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6019 | pathoswith | 49 | attributeFlags = 12 |
5954 | pathoswith | 50 | attributeID = 14 |
6080 | pathoswith | 51 | ; resident attribute header |
52 | sizeWithoutHeader = 10h |
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53 | ; attributeOffset = 14h |
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6019 | pathoswith | 54 | indexedFlag = 16h |
5954 | pathoswith | 55 | ; non resident attribute header |
6080 | pathoswith | 56 | firstVCN = 10h |
5954 | pathoswith | 57 | lastVCN = 18h |
58 | dataRunsOffset = 20h |
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59 | attributeAllocatedSize = 28h |
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60 | attributeRealSize = 30h |
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61 | initialDataSize = 38h |
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62 | ; $IndexRoot |
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63 | collationRule = 4 |
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64 | indexRecordSize = 8 |
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65 | indexRecordSizeClus = 12 |
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66 | ; node header |
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67 | indexOffset = 0 |
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68 | nodeRealSize = 4 |
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69 | nodeAllocatedSize = 8 |
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70 | ; $Filename index |
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71 | fileRecordReference = 0 |
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72 | fileReferenceReuse = 6 |
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73 | indexAllocatedSize = 8 |
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74 | indexRawSize = 10 |
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75 | indexFlags = 12 |
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76 | directoryRecordReference = 16 |
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77 | directoryReferenceReuse = 16h |
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78 | fileAllocatedSize = 38h |
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79 | fileRealSize = 40h |
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80 | fileFlags = 48h |
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81 | fileNameLength = 50h |
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82 | |||
3742 | clevermous | 83 | struct NTFS PARTITION |
5954 | pathoswith | 84 | Lock MUTEX ? ; Currently operations with one partition |
85 | ; can not be executed in parallel since the legacy code is not ready. |
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86 | sectors_per_cluster dd ? |
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87 | mft_cluster dd ? ; location |
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88 | mftmirr_cluster dd ? ; location |
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89 | frs_size dd ? ; in bytes |
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90 | frs_buffer dd ? ; MFT fileRecord buffer |
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91 | mft_retrieval dd ? |
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92 | mft_retrieval_size dd ? |
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93 | mft_retrieval_alloc dd ? |
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94 | mft_retrieval_end dd ? |
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95 | cur_index_size dd ? ; in sectors |
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96 | cur_index_buf dd ? ; index node buffer |
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97 | BitmapBuffer dd ? |
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98 | BitmapTotalSize dd ? ; bytes reserved |
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99 | BitmapSize dd ? ; bytes readen |
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100 | BitmapLocation dd ? ; starting sector |
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101 | BitmapStart dd ? ; first byte after area, reserved for MFT |
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102 | mftBitmapBuffer dd ? ; one cluster |
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103 | mftBitmapSize dd ? ; bytes readen |
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104 | mftBitmapLocation dd ? ; starting sector |
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2288 | clevermous | 105 | |
5954 | pathoswith | 106 | ntfs_cur_attr dd ? ; attribute type |
107 | ntfs_cur_iRecord dd ? ; number of fileRecord in MFT |
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108 | ntfs_cur_offs dd ? ; attribute VCN in sectors |
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109 | ntfs_cur_size dd ? ; max sectors to read |
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110 | ntfs_cur_buf dd ? |
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111 | ntfs_cur_read dd ? ; bytes readen |
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112 | ntfsLastRead dd ? ; last readen block of sectors |
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113 | newMftRecord dd ? ; number of fileRecord in MFT |
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114 | fileDataStart dd ? ; starting cluster |
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115 | fileDataSize dd ? ; in clusters |
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116 | fileRealSize dd ? ; in bytes |
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117 | indexOffset dd ? |
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118 | nodeLastRead dd ? |
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119 | ntfs_bCanContinue db ? |
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120 | ntfsFolder db ? |
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5994 | pathoswith | 121 | ntfsWriteAttr db ? ; Warning: Don't forget to turn off!!! |
5954 | pathoswith | 122 | ntfsFragmentCount db ? |
3742 | clevermous | 123 | |
5954 | pathoswith | 124 | cur_subnode_size dd ? |
125 | ntfs_attr_iRecord dd ? |
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126 | ntfs_attr_iBaseRecord dd ? |
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127 | ntfs_attr_offs dd ? |
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128 | ntfs_attr_list dd ? |
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129 | ntfs_attr_size dq ? |
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130 | ntfs_cur_tail dd ? |
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3742 | clevermous | 131 | |
5954 | pathoswith | 132 | ntfs_attrlist_buf rb 0x400 |
133 | ntfs_attrlist_mft_buf rb 0x400 |
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134 | ntfs_bitmap_buf rb 0x400 |
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3742 | clevermous | 135 | ends |
136 | |||
5954 | pathoswith | 137 | ; NTFS external functions |
138 | ; in: |
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139 | ; ebx -> parameter structure of sysfunc 70 |
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140 | ; ebp -> NTFS structure |
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141 | ; [esi]+[esp+4] = name |
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142 | ; out: |
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143 | ; eax, ebx = return values for sysfunc 70 |
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3742 | clevermous | 144 | iglobal |
145 | align 4 |
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146 | ntfs_user_functions: |
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147 | dd ntfs_free |
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148 | dd (ntfs_user_functions_end - ntfs_user_functions - 4) / 4 |
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5954 | pathoswith | 149 | dd ntfs_ReadFile |
3742 | clevermous | 150 | dd ntfs_ReadFolder |
5954 | pathoswith | 151 | dd ntfs_CreateFile |
5994 | pathoswith | 152 | dd ntfs_WriteFile |
3742 | clevermous | 153 | dd ntfs_SetFileEnd |
154 | dd ntfs_GetFileInfo |
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155 | dd ntfs_SetFileInfo |
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156 | dd 0 |
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157 | dd ntfs_Delete |
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158 | dd ntfs_CreateFolder |
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159 | ntfs_user_functions_end: |
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160 | endg |
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161 | |||
2288 | clevermous | 162 | ntfs_test_bootsec: |
5954 | pathoswith | 163 | ; in: ebx -> buffer, edx = size of partition |
164 | ; out: CF=1 -> invalid |
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2288 | clevermous | 165 | ; 1. Name=='NTFS ' |
166 | cmp dword [ebx+3], 'NTFS' |
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167 | jnz .no |
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168 | cmp dword [ebx+7], ' ' |
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169 | jnz .no |
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170 | ; 2. Number of bytes per sector is the same as for physical device |
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171 | ; (that is, 0x200 for hard disk) |
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172 | cmp word [ebx+11], 0x200 |
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173 | jnz .no |
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174 | ; 3. Number of sectors per cluster must be power of 2 |
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175 | movzx eax, byte [ebx+13] |
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176 | dec eax |
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177 | js .no |
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178 | test al, [ebx+13] |
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179 | jnz .no |
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180 | ; 4. FAT parameters must be zero |
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181 | cmp word [ebx+14], 0 |
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182 | jnz .no |
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183 | cmp dword [ebx+16], 0 |
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184 | jnz .no |
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185 | cmp byte [ebx+20], 0 |
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186 | jnz .no |
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187 | cmp word [ebx+22], 0 |
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188 | jnz .no |
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189 | cmp dword [ebx+32], 0 |
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190 | jnz .no |
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191 | ; 5. Number of sectors <= partition size |
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192 | cmp dword [ebx+0x2C], 0 |
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193 | ja .no |
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194 | cmp [ebx+0x28], edx |
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195 | ja .no |
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196 | ; 6. $MFT and $MFTMirr clusters must be within partition |
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197 | cmp dword [ebx+0x34], 0 |
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198 | ja .no |
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199 | push edx |
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200 | movzx eax, byte [ebx+13] |
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201 | mul dword [ebx+0x30] |
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202 | test edx, edx |
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203 | pop edx |
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204 | jnz .no |
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205 | cmp eax, edx |
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206 | ja .no |
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207 | cmp dword [ebx+0x3C], 0 |
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208 | ja .no |
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209 | push edx |
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210 | movzx eax, byte [ebx+13] |
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211 | mul dword [ebx+0x38] |
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212 | test edx, edx |
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213 | pop edx |
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214 | jnz .no |
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215 | cmp eax, edx |
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216 | ja .no |
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5954 | pathoswith | 217 | ; 7. Clusters per FRS must be either power of 2 or between -31 and -9 |
2288 | clevermous | 218 | movsx eax, byte [ebx+0x40] |
219 | cmp al, -31 |
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220 | jl .no |
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221 | cmp al, -9 |
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222 | jle @f |
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223 | dec eax |
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224 | js .no |
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225 | test [ebx+0x40], al |
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226 | jnz .no |
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5954 | pathoswith | 227 | @@: ; 8. Same for clusters per IndexAllocationBuffer |
2288 | clevermous | 228 | movsx eax, byte [ebx+0x44] |
229 | cmp al, -31 |
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230 | jl .no |
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231 | cmp al, -9 |
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232 | jle @f |
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233 | dec eax |
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234 | js .no |
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235 | test [ebx+0x44], al |
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236 | jnz .no |
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5954 | pathoswith | 237 | @@: ; OK, this is correct NTFS bootsector |
2288 | clevermous | 238 | clc |
239 | ret |
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5954 | pathoswith | 240 | .no: ; No, this bootsector isn't NTFS |
2288 | clevermous | 241 | stc |
242 | ret |
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243 | |||
5954 | pathoswith | 244 | ntfs_create_partition: |
5089 | clevermous | 245 | cmp dword [esi+DISK.MediaInfo.SectorSize], 512 |
246 | jnz .nope |
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3742 | clevermous | 247 | mov edx, dword [ebp+PARTITION.Length] |
248 | cmp dword [esp+4], 0 |
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249 | jz .boot_read_ok |
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250 | add ebx, 512 |
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251 | lea eax, [edx-1] |
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252 | call fs_read32_sys |
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253 | test eax, eax |
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254 | jnz @f |
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255 | call ntfs_test_bootsec |
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256 | jnc .ntfs_setup |
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257 | @@: |
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258 | mov eax, edx |
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259 | shr eax, 1 |
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260 | call fs_read32_sys |
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261 | test eax, eax |
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5954 | pathoswith | 262 | jnz .nope |
3742 | clevermous | 263 | .boot_read_ok: |
264 | call ntfs_test_bootsec |
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265 | jnc .ntfs_setup |
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266 | .nope: |
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267 | xor eax, eax |
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268 | jmp .exit |
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5954 | pathoswith | 269 | ; By given bootsector, initialize some NTFS variables |
3742 | clevermous | 270 | .ntfs_setup: |
271 | movi eax, sizeof.NTFS |
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272 | call malloc |
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273 | test eax, eax |
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274 | jz .exit |
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275 | mov ecx, dword [ebp+PARTITION.FirstSector] |
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276 | mov dword [eax+NTFS.FirstSector], ecx |
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277 | mov ecx, dword [ebp+PARTITION.FirstSector+4] |
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278 | mov dword [eax+NTFS.FirstSector+4], ecx |
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279 | mov ecx, [ebp+PARTITION.Disk] |
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280 | mov [eax+NTFS.Disk], ecx |
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281 | mov [eax+NTFS.FSUserFunctions], ntfs_user_functions |
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5994 | pathoswith | 282 | mov [eax+NTFS.ntfsWriteAttr], 0 |
5954 | pathoswith | 283 | |
3742 | clevermous | 284 | push ebx ebp esi |
285 | mov ebp, eax |
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286 | lea ecx, [ebp+NTFS.Lock] |
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287 | call mutex_init |
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2288 | clevermous | 288 | movzx eax, byte [ebx+13] |
3742 | clevermous | 289 | mov [ebp+NTFS.sectors_per_cluster], eax |
2288 | clevermous | 290 | mov eax, [ebx+0x28] |
3742 | clevermous | 291 | mov dword [ebp+NTFS.Length], eax |
292 | and dword [ebp+NTFS.Length+4], 0 |
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2288 | clevermous | 293 | mov eax, [ebx+0x30] |
3742 | clevermous | 294 | mov [ebp+NTFS.mft_cluster], eax |
2288 | clevermous | 295 | mov eax, [ebx+0x38] |
3742 | clevermous | 296 | mov [ebp+NTFS.mftmirr_cluster], eax |
2288 | clevermous | 297 | movsx eax, byte [ebx+0x40] |
298 | test eax, eax |
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5954 | pathoswith | 299 | js @f |
3742 | clevermous | 300 | mul [ebp+NTFS.sectors_per_cluster] |
2288 | clevermous | 301 | shl eax, 9 |
5954 | pathoswith | 302 | jmp .1 |
303 | @@: |
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2288 | clevermous | 304 | neg eax |
305 | mov ecx, eax |
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306 | mov eax, 1 |
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307 | shl eax, cl |
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5954 | pathoswith | 308 | .1: |
3742 | clevermous | 309 | mov [ebp+NTFS.frs_size], eax |
5954 | pathoswith | 310 | stdcall kernel_alloc, eax |
2288 | clevermous | 311 | test eax, eax |
3742 | clevermous | 312 | jz .fail_free |
313 | mov [ebp+NTFS.frs_buffer], eax |
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2288 | clevermous | 314 | ; read $MFT disposition |
3742 | clevermous | 315 | mov eax, [ebp+NTFS.mft_cluster] |
316 | mul [ebp+NTFS.sectors_per_cluster] |
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2288 | clevermous | 317 | call ntfs_read_frs_sector |
3742 | clevermous | 318 | test eax, eax |
2288 | clevermous | 319 | jnz .usemirr |
320 | cmp dword [ebx], 'FILE' |
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321 | jnz .usemirr |
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322 | call ntfs_restore_usa_frs |
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323 | jnc .mftok |
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324 | .usemirr: |
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3742 | clevermous | 325 | mov eax, [ebp+NTFS.mftmirr_cluster] |
326 | mul [ebp+NTFS.sectors_per_cluster] |
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2288 | clevermous | 327 | call ntfs_read_frs_sector |
3742 | clevermous | 328 | test eax, eax |
5954 | pathoswith | 329 | jnz .fail_free_frs |
2288 | clevermous | 330 | cmp dword [ebx], 'FILE' |
5954 | pathoswith | 331 | jnz .fail_free_frs |
2288 | clevermous | 332 | call ntfs_restore_usa_frs |
5954 | pathoswith | 333 | jc .fail_free_frs |
2288 | clevermous | 334 | .mftok: |
335 | ; read $MFT table retrieval information |
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336 | ; start with one page, increase if not enough (when MFT too fragmented) |
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337 | push ebx |
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5954 | pathoswith | 338 | stdcall kernel_alloc, 0x1000 |
2288 | clevermous | 339 | pop ebx |
340 | test eax, eax |
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341 | jz .fail_free_frs |
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3742 | clevermous | 342 | mov [ebp+NTFS.mft_retrieval], eax |
343 | and [ebp+NTFS.mft_retrieval_size], 0 |
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344 | mov [ebp+NTFS.mft_retrieval_alloc], 0x1000/8 |
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2288 | clevermous | 345 | ; $MFT base record must contain unnamed non-resident $DATA attribute |
346 | movzx eax, word [ebx+14h] |
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347 | add eax, ebx |
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348 | .scandata: |
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349 | cmp dword [eax], -1 |
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350 | jz .fail_free_mft |
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351 | cmp dword [eax], 0x80 |
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352 | jnz @f |
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353 | cmp byte [eax+9], 0 |
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354 | jz .founddata |
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355 | @@: |
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356 | add eax, [eax+4] |
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357 | jmp .scandata |
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358 | .founddata: |
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359 | cmp byte [eax+8], 0 |
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360 | jz .fail_free_mft |
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361 | ; load first portion of $DATA attribute retrieval information |
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362 | mov edx, [eax+0x18] |
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3742 | clevermous | 363 | mov [ebp+NTFS.mft_retrieval_end], edx |
2288 | clevermous | 364 | mov esi, eax |
365 | movzx eax, word [eax+0x20] |
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366 | add esi, eax |
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367 | sub esp, 10h |
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368 | .scanmcb: |
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369 | call ntfs_decode_mcb_entry |
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370 | jnc .scanmcbend |
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371 | call .get_mft_retrieval_ptr |
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372 | mov edx, [esp] ; block length |
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373 | mov [eax], edx |
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374 | mov edx, [esp+8] ; block addr (relative) |
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375 | mov [eax+4], edx |
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3742 | clevermous | 376 | inc [ebp+NTFS.mft_retrieval_size] |
2288 | clevermous | 377 | jmp .scanmcb |
378 | .scanmcbend: |
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379 | add esp, 10h |
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380 | ; there may be other portions of $DATA attribute in auxiliary records; |
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381 | ; if they will be needed, they will be loaded later |
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3742 | clevermous | 382 | mov [ebp+NTFS.cur_index_size], 0x1000/0x200 |
5954 | pathoswith | 383 | stdcall kernel_alloc, 0x1000 |
2288 | clevermous | 384 | test eax, eax |
385 | jz .fail_free_mft |
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3742 | clevermous | 386 | mov [ebp+NTFS.cur_index_buf], eax |
5954 | pathoswith | 387 | ; reserve adress space for bitmap buffer and load some part of bitmap |
388 | mov eax, dword [ebp+NTFS.Length] |
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389 | xor edx, edx |
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390 | div [ebp+NTFS.sectors_per_cluster] |
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391 | shr eax, 3 |
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392 | mov [ebp+NTFS.BitmapTotalSize], eax |
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393 | add eax, 7FFFh |
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394 | and eax, not 7FFFh |
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395 | push eax |
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396 | call alloc_kernel_space |
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397 | test eax, eax |
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398 | jz .failFreeIndex |
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399 | mov [ebp+NTFS.BitmapBuffer], eax |
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400 | mov [ebp+NTFS.ntfs_cur_buf], eax |
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401 | mov eax, [ebp+NTFS.BitmapTotalSize] |
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402 | add eax, [ebp+NTFS.mft_cluster] |
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403 | shr eax, 3+2 ; reserve 1/8 of partition for $MFT |
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404 | shl eax, 2 |
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405 | mov [ebp+NTFS.BitmapStart], eax |
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406 | shr eax, 15 |
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407 | inc eax |
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408 | shl eax, 3 |
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409 | push eax |
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410 | push eax |
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411 | shl eax, 3 |
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412 | mov [ebp+NTFS.ntfs_cur_size], eax |
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413 | call alloc_pages |
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414 | test eax, eax |
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415 | pop ecx |
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416 | jz .failFreeBitmap |
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417 | add eax, 3 |
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418 | mov ebx, [ebp+NTFS.BitmapBuffer] |
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419 | call commit_pages |
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420 | mov [ebp+NTFS.ntfs_cur_iRecord], 6 |
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421 | mov [ebp+NTFS.ntfs_cur_attr], 0x80 |
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422 | mov [ebp+NTFS.ntfs_cur_offs], 0 |
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423 | call ntfs_read_attr |
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424 | jc .failFreeBitmap |
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425 | mov eax, [ebp+NTFS.ntfs_cur_read] |
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426 | mov [ebp+NTFS.BitmapSize], eax |
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427 | mov eax, [ebp+NTFS.ntfsLastRead] |
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428 | mov [ebp+NTFS.BitmapLocation], eax |
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429 | ; read MFT $BITMAP attribute |
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430 | mov eax, [ebp+NTFS.sectors_per_cluster] |
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431 | mov [ebp+NTFS.ntfs_cur_size], eax |
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432 | shl eax, 9 |
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433 | stdcall kernel_alloc, eax |
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434 | test eax, eax |
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435 | jz .failFreeBitmap |
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436 | mov [ebp+NTFS.mftBitmapBuffer], eax |
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437 | mov [ebp+NTFS.ntfs_cur_buf], eax |
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438 | mov [ebp+NTFS.ntfs_cur_iRecord], 0 |
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439 | mov [ebp+NTFS.ntfs_cur_attr], 0xB0 |
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440 | mov [ebp+NTFS.ntfs_cur_offs], 0 |
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441 | call ntfs_read_attr |
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442 | mov eax, [ebp+NTFS.ntfs_cur_read] |
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443 | cmp eax, 4 |
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444 | jc .failFreeBitmapMFT |
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445 | mov [ebp+NTFS.mftBitmapSize], eax |
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446 | mov eax, [ebp+NTFS.ntfsLastRead] |
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447 | mov [ebp+NTFS.mftBitmapLocation], eax |
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2288 | clevermous | 448 | |
3742 | clevermous | 449 | mov eax, ebp |
5954 | pathoswith | 450 | .pop_exit: |
451 | pop esi ebp ebx |
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452 | .exit: |
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453 | cmp dword [esp+4], 0 |
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454 | jz @f |
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455 | sub ebx, 512 |
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456 | @@: |
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457 | ret |
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458 | |||
459 | .failFreeBitmapMFT: |
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460 | stdcall kernel_free, [ebx+NTFS.mftBitmapBuffer] |
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461 | .failFreeBitmap: |
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462 | stdcall kernel_free, [ebx+NTFS.BitmapBuffer] |
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463 | .failFreeIndex: |
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464 | stdcall kernel_free, [ebp+NTFS.cur_index_buf] |
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465 | .fail_free_mft: |
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466 | stdcall kernel_free, [ebp+NTFS.mft_retrieval] |
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467 | .fail_free_frs: |
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468 | stdcall kernel_free, [ebp+NTFS.frs_buffer] |
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469 | .fail_free: |
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470 | mov eax, ebp |
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471 | call free |
||
472 | xor eax, eax |
||
3742 | clevermous | 473 | jmp .pop_exit |
2288 | clevermous | 474 | |
475 | .get_mft_retrieval_ptr: |
||
476 | pushad |
||
3742 | clevermous | 477 | mov eax, [ebp+NTFS.mft_retrieval_size] |
478 | cmp eax, [ebp+NTFS.mft_retrieval_alloc] |
||
2288 | clevermous | 479 | jnz .ok |
480 | add eax, 0x1000/8 |
||
3742 | clevermous | 481 | mov [ebp+NTFS.mft_retrieval_alloc], eax |
2288 | clevermous | 482 | shl eax, 3 |
5954 | pathoswith | 483 | stdcall kernel_alloc, eax |
2288 | clevermous | 484 | test eax, eax |
485 | jnz @f |
||
486 | popad |
||
487 | add esp, 14h |
||
488 | jmp .fail_free_mft |
||
489 | @@: |
||
3742 | clevermous | 490 | mov esi, [ebp+NTFS.mft_retrieval] |
2288 | clevermous | 491 | mov edi, eax |
3742 | clevermous | 492 | mov ecx, [ebp+NTFS.mft_retrieval_size] |
2288 | clevermous | 493 | add ecx, ecx |
494 | rep movsd |
||
3742 | clevermous | 495 | push [ebp+NTFS.mft_retrieval] |
496 | mov [ebp+NTFS.mft_retrieval], eax |
||
2288 | clevermous | 497 | call kernel_free |
3742 | clevermous | 498 | mov eax, [ebp+NTFS.mft_retrieval_size] |
2288 | clevermous | 499 | .ok: |
500 | shl eax, 3 |
||
3742 | clevermous | 501 | add eax, [ebp+NTFS.mft_retrieval] |
2288 | clevermous | 502 | mov [esp+28], eax |
503 | popad |
||
504 | ret |
||
505 | |||
5954 | pathoswith | 506 | ntfs_free: |
3742 | clevermous | 507 | push ebx |
5954 | pathoswith | 508 | mov ebx, eax |
3742 | clevermous | 509 | stdcall kernel_free, [ebx+NTFS.frs_buffer] |
510 | stdcall kernel_free, [ebx+NTFS.mft_retrieval] |
||
511 | stdcall kernel_free, [ebx+NTFS.cur_index_buf] |
||
5954 | pathoswith | 512 | stdcall kernel_free, [ebx+NTFS.mftBitmapBuffer] |
513 | stdcall kernel_free, [ebx+NTFS.BitmapBuffer] |
||
514 | mov eax, ebx |
||
3742 | clevermous | 515 | pop ebx |
5954 | pathoswith | 516 | jmp free |
3742 | clevermous | 517 | |
5954 | pathoswith | 518 | ntfs_lock: |
3742 | clevermous | 519 | lea ecx, [ebp+NTFS.Lock] |
520 | jmp mutex_lock |
||
521 | |||
5954 | pathoswith | 522 | ntfs_unlock: |
3742 | clevermous | 523 | lea ecx, [ebp+NTFS.Lock] |
524 | jmp mutex_unlock |
||
525 | |||
2288 | clevermous | 526 | ntfs_read_frs_sector: |
3742 | clevermous | 527 | push ecx |
528 | mov ebx, [ebp+NTFS.frs_buffer] |
||
529 | push ebx |
||
530 | mov ecx, [ebp+NTFS.frs_size] |
||
2288 | clevermous | 531 | shr ecx, 9 |
3742 | clevermous | 532 | push ecx |
533 | mov ecx, eax |
||
2288 | clevermous | 534 | @@: |
3742 | clevermous | 535 | mov eax, ecx |
536 | call fs_read32_sys |
||
537 | test eax, eax |
||
2288 | clevermous | 538 | jnz .fail |
539 | add ebx, 0x200 |
||
3742 | clevermous | 540 | inc ecx |
541 | dec dword [esp] |
||
542 | jnz @b |
||
543 | pop eax |
||
2288 | clevermous | 544 | .fail: |
545 | pop ebx |
||
3742 | clevermous | 546 | pop ecx |
2288 | clevermous | 547 | ret |
548 | |||
549 | ntfs_read_attr: |
||
5994 | pathoswith | 550 | ; [ebp+NTFS.ntfsWriteAttr]=1 -> write attribute |
5954 | pathoswith | 551 | ; in: |
552 | ; [ebp+NTFS.ntfs_cur_iRecord] = number of fileRecord |
||
553 | ; [ebp+NTFS.ntfs_cur_attr] = attribute type |
||
554 | ; [ebp+NTFS.ntfs_cur_offs] = attribute VCN in sectors |
||
555 | ; [ebp+NTFS.ntfs_cur_buf] -> buffer for data |
||
556 | ; [ebp+NTFS.ntfs_cur_size] = max sectors to read |
||
557 | ; out: |
||
558 | ; [ebp+NTFS.ntfs_cur_read] = bytes readen |
||
559 | ; CF=1 -> failed, eax = disk error code, eax=0 -> something with FS |
||
3742 | clevermous | 560 | xor eax, eax |
2288 | clevermous | 561 | pushad |
3742 | clevermous | 562 | and [ebp+NTFS.ntfs_cur_read], 0 |
563 | cmp [ebp+NTFS.ntfs_cur_iRecord], 0 |
||
2288 | clevermous | 564 | jnz .nomft |
3742 | clevermous | 565 | cmp [ebp+NTFS.ntfs_cur_attr], 0x80 |
2288 | clevermous | 566 | jnz .nomft |
3742 | clevermous | 567 | mov eax, [ebp+NTFS.mft_retrieval_end] |
2288 | clevermous | 568 | inc eax |
3742 | clevermous | 569 | mul [ebp+NTFS.sectors_per_cluster] |
570 | cmp eax, [ebp+NTFS.ntfs_cur_offs] |
||
2288 | clevermous | 571 | jbe .nomft |
572 | ; precalculated part of $Mft $DATA |
||
3742 | clevermous | 573 | mov esi, [ebp+NTFS.mft_retrieval] |
574 | mov eax, [ebp+NTFS.ntfs_cur_offs] |
||
2288 | clevermous | 575 | xor edx, edx |
3742 | clevermous | 576 | div [ebp+NTFS.sectors_per_cluster] |
2288 | clevermous | 577 | ; eax = VCN, edx = offset in sectors from beginning of cluster |
578 | xor ecx, ecx ; ecx will contain LCN |
||
579 | .mftscan: |
||
580 | add ecx, [esi+4] |
||
581 | sub eax, [esi] |
||
582 | jb @f |
||
583 | add esi, 8 |
||
584 | push eax |
||
3742 | clevermous | 585 | mov eax, [ebp+NTFS.mft_retrieval_end] |
2288 | clevermous | 586 | shl eax, 3 |
3742 | clevermous | 587 | add eax, [ebp+NTFS.mft_retrieval] |
2288 | clevermous | 588 | cmp eax, esi |
589 | pop eax |
||
590 | jnz .mftscan |
||
591 | jmp .nomft |
||
592 | @@: |
||
593 | push ecx |
||
594 | add ecx, eax |
||
595 | add ecx, [esi] |
||
596 | push eax |
||
597 | push edx |
||
3742 | clevermous | 598 | mov eax, [ebp+NTFS.sectors_per_cluster] |
2288 | clevermous | 599 | mul ecx |
600 | ; eax = sector on partition |
||
601 | pop edx |
||
602 | add eax, edx |
||
3742 | clevermous | 603 | mov ebx, [ebp+NTFS.ntfs_cur_buf] |
2288 | clevermous | 604 | pop ecx |
605 | neg ecx |
||
3742 | clevermous | 606 | imul ecx, [ebp+NTFS.sectors_per_cluster] |
2288 | clevermous | 607 | sub ecx, edx |
5954 | pathoswith | 608 | mov [ebp+NTFS.ntfsLastRead], eax |
3742 | clevermous | 609 | cmp ecx, [ebp+NTFS.ntfs_cur_size] |
2288 | clevermous | 610 | jb @f |
3742 | clevermous | 611 | mov ecx, [ebp+NTFS.ntfs_cur_size] |
2288 | clevermous | 612 | @@: |
613 | ; ecx = number of sequential sectors to read |
||
3742 | clevermous | 614 | push eax |
615 | call fs_read32_sys |
||
616 | pop edx |
||
617 | test eax, eax |
||
2288 | clevermous | 618 | jnz .errread |
3742 | clevermous | 619 | add [ebp+NTFS.ntfs_cur_read], 0x200 |
620 | dec [ebp+NTFS.ntfs_cur_size] |
||
621 | inc [ebp+NTFS.ntfs_cur_offs] |
||
2288 | clevermous | 622 | add ebx, 0x200 |
3742 | clevermous | 623 | mov [ebp+NTFS.ntfs_cur_buf], ebx |
624 | lea eax, [edx+1] |
||
2288 | clevermous | 625 | loop @b |
626 | pop ecx |
||
627 | xor eax, eax |
||
628 | xor edx, edx |
||
3742 | clevermous | 629 | cmp [ebp+NTFS.ntfs_cur_size], eax |
2288 | clevermous | 630 | jz @f |
631 | add esi, 8 |
||
632 | push eax |
||
3742 | clevermous | 633 | mov eax, [ebp+NTFS.mft_retrieval_end] |
2288 | clevermous | 634 | shl eax, 3 |
3742 | clevermous | 635 | add eax, [ebp+NTFS.mft_retrieval] |
2288 | clevermous | 636 | cmp eax, esi |
637 | pop eax |
||
638 | jz .nomft |
||
639 | jmp .mftscan |
||
640 | @@: |
||
641 | popad |
||
642 | ret |
||
643 | .errread: |
||
644 | pop ecx |
||
645 | .errret: |
||
3742 | clevermous | 646 | mov [esp+28], eax |
2288 | clevermous | 647 | stc |
648 | popad |
||
649 | ret |
||
650 | .nomft: |
||
651 | ; 1. Read file record. |
||
652 | ; N.B. This will do recursive call of read_attr for $MFT::$Data. |
||
3742 | clevermous | 653 | mov eax, [ebp+NTFS.ntfs_cur_iRecord] |
654 | mov [ebp+NTFS.ntfs_attr_iRecord], eax |
||
655 | and [ebp+NTFS.ntfs_attr_list], 0 |
||
656 | or dword [ebp+NTFS.ntfs_attr_size], -1 |
||
657 | or dword [ebp+NTFS.ntfs_attr_size+4], -1 |
||
658 | or [ebp+NTFS.ntfs_attr_iBaseRecord], -1 |
||
2288 | clevermous | 659 | call ntfs_read_file_record |
3742 | clevermous | 660 | jc .errret |
2288 | clevermous | 661 | ; 2. Find required attribute. |
3742 | clevermous | 662 | mov eax, [ebp+NTFS.frs_buffer] |
2288 | clevermous | 663 | ; a) For auxiliary records, read base record |
664 | ; N.B. If base record is present, |
||
665 | ; base iRecord may be 0 (for $Mft), but SequenceNumber is nonzero |
||
666 | cmp dword [eax+24h], 0 |
||
667 | jz @f |
||
668 | mov eax, [eax+20h] |
||
669 | ; test eax, eax |
||
670 | ; jz @f |
||
671 | .beginfindattr: |
||
3742 | clevermous | 672 | mov [ebp+NTFS.ntfs_attr_iRecord], eax |
2288 | clevermous | 673 | call ntfs_read_file_record |
3742 | clevermous | 674 | jc .errret |
2288 | clevermous | 675 | @@: |
676 | ; b) Scan for required attribute and for $ATTR_LIST |
||
3742 | clevermous | 677 | mov eax, [ebp+NTFS.frs_buffer] |
2288 | clevermous | 678 | movzx ecx, word [eax+14h] |
679 | add eax, ecx |
||
3742 | clevermous | 680 | mov ecx, [ebp+NTFS.ntfs_cur_attr] |
681 | and [ebp+NTFS.ntfs_attr_offs], 0 |
||
2288 | clevermous | 682 | .scanattr: |
683 | cmp dword [eax], -1 |
||
684 | jz .scandone |
||
685 | cmp dword [eax], ecx |
||
686 | jz .okattr |
||
3742 | clevermous | 687 | cmp [ebp+NTFS.ntfs_attr_iBaseRecord], -1 |
2288 | clevermous | 688 | jnz .scancont |
689 | cmp dword [eax], 0x20 ; $ATTR_LIST |
||
690 | jnz .scancont |
||
3742 | clevermous | 691 | mov [ebp+NTFS.ntfs_attr_list], eax |
2288 | clevermous | 692 | jmp .scancont |
693 | .okattr: |
||
694 | ; ignore named $DATA attributes (aka NTFS streams) |
||
695 | cmp ecx, 0x80 |
||
696 | jnz @f |
||
697 | cmp byte [eax+9], 0 |
||
698 | jnz .scancont |
||
699 | @@: |
||
3742 | clevermous | 700 | mov [ebp+NTFS.ntfs_attr_offs], eax |
2288 | clevermous | 701 | .scancont: |
702 | add eax, [eax+4] |
||
703 | jmp .scanattr |
||
704 | .continue: |
||
705 | pushad |
||
3742 | clevermous | 706 | and [ebp+NTFS.ntfs_cur_read], 0 |
2288 | clevermous | 707 | .scandone: |
708 | ; c) Check for required offset and length |
||
3742 | clevermous | 709 | mov ecx, [ebp+NTFS.ntfs_attr_offs] |
2288 | clevermous | 710 | jecxz .noattr |
3742 | clevermous | 711 | push [ebp+NTFS.ntfs_cur_size] |
712 | push [ebp+NTFS.ntfs_cur_read] |
||
2288 | clevermous | 713 | call .doreadattr |
714 | pop edx |
||
3742 | clevermous | 715 | pop ecx |
2288 | clevermous | 716 | jc @f |
3742 | clevermous | 717 | cmp [ebp+NTFS.ntfs_bCanContinue], 0 |
2288 | clevermous | 718 | jz @f |
3742 | clevermous | 719 | sub edx, [ebp+NTFS.ntfs_cur_read] |
2288 | clevermous | 720 | neg edx |
721 | shr edx, 9 |
||
3742 | clevermous | 722 | sub ecx, edx |
723 | mov [ebp+NTFS.ntfs_cur_size], ecx |
||
2288 | clevermous | 724 | jnz .not_in_cur |
725 | @@: |
||
726 | popad |
||
727 | ret |
||
728 | .noattr: |
||
729 | .not_in_cur: |
||
3742 | clevermous | 730 | cmp [ebp+NTFS.ntfs_cur_attr], 0x20 |
2288 | clevermous | 731 | jz @f |
3742 | clevermous | 732 | mov ecx, [ebp+NTFS.ntfs_attr_list] |
2288 | clevermous | 733 | test ecx, ecx |
734 | jnz .lookattr |
||
735 | .ret_is_attr: |
||
3742 | clevermous | 736 | and dword [esp+28], 0 |
737 | cmp [ebp+NTFS.ntfs_attr_offs], 1 ; CF set <=> ntfs_attr_offs == 0 |
||
2288 | clevermous | 738 | popad |
739 | ret |
||
740 | .lookattr: |
||
741 | ; required attribute or required offset was not found in base record; |
||
742 | ; it may be present in auxiliary records; |
||
743 | ; scan $ATTR_LIST |
||
3742 | clevermous | 744 | mov eax, [ebp+NTFS.ntfs_attr_iBaseRecord] |
2288 | clevermous | 745 | cmp eax, -1 |
746 | jz @f |
||
747 | call ntfs_read_file_record |
||
3742 | clevermous | 748 | jc .errret |
749 | or [ebp+NTFS.ntfs_attr_iBaseRecord], -1 |
||
2288 | clevermous | 750 | @@: |
3742 | clevermous | 751 | push [ebp+NTFS.ntfs_cur_offs] |
752 | push [ebp+NTFS.ntfs_cur_size] |
||
753 | push [ebp+NTFS.ntfs_cur_read] |
||
754 | push [ebp+NTFS.ntfs_cur_buf] |
||
755 | push dword [ebp+NTFS.ntfs_attr_size] |
||
756 | push dword [ebp+NTFS.ntfs_attr_size+4] |
||
757 | or dword [ebp+NTFS.ntfs_attr_size], -1 |
||
758 | or dword [ebp+NTFS.ntfs_attr_size+4], -1 |
||
759 | and [ebp+NTFS.ntfs_cur_offs], 0 |
||
760 | mov [ebp+NTFS.ntfs_cur_size], 2 |
||
761 | and [ebp+NTFS.ntfs_cur_read], 0 |
||
762 | lea eax, [ebp+NTFS.ntfs_attrlist_buf] |
||
763 | cmp [ebp+NTFS.ntfs_cur_iRecord], 0 |
||
2288 | clevermous | 764 | jnz @f |
3742 | clevermous | 765 | lea eax, [ebp+NTFS.ntfs_attrlist_mft_buf] |
2288 | clevermous | 766 | @@: |
3742 | clevermous | 767 | mov [ebp+NTFS.ntfs_cur_buf], eax |
2288 | clevermous | 768 | push eax |
769 | call .doreadattr |
||
770 | pop esi |
||
771 | mov edx, 1 |
||
3742 | clevermous | 772 | pop dword [ebp+NTFS.ntfs_attr_size+4] |
773 | pop dword [ebp+NTFS.ntfs_attr_size] |
||
774 | mov ecx, [ebp+NTFS.ntfs_cur_read] |
||
775 | pop [ebp+NTFS.ntfs_cur_buf] |
||
776 | pop [ebp+NTFS.ntfs_cur_read] |
||
777 | pop [ebp+NTFS.ntfs_cur_size] |
||
778 | pop [ebp+NTFS.ntfs_cur_offs] |
||
2288 | clevermous | 779 | jc .errret |
780 | or edi, -1 |
||
3742 | clevermous | 781 | lea ecx, [ecx+esi-1Ah] |
2288 | clevermous | 782 | .scanliststart: |
3742 | clevermous | 783 | push ecx |
784 | mov eax, [ebp+NTFS.ntfs_cur_attr] |
||
2288 | clevermous | 785 | .scanlist: |
3742 | clevermous | 786 | cmp esi, [esp] |
2288 | clevermous | 787 | jae .scanlistdone |
788 | cmp eax, [esi] |
||
789 | jz @f |
||
790 | .scanlistcont: |
||
791 | movzx ecx, word [esi+4] |
||
792 | add esi, ecx |
||
793 | jmp .scanlist |
||
794 | @@: |
||
795 | ; ignore named $DATA attributes (aka NTFS streams) |
||
796 | cmp eax, 0x80 |
||
797 | jnz @f |
||
798 | cmp byte [esi+6], 0 |
||
799 | jnz .scanlistcont |
||
800 | @@: |
||
801 | push eax |
||
802 | mov eax, [esi+8] |
||
803 | test eax, eax |
||
804 | jnz .testf |
||
3742 | clevermous | 805 | mov eax, dword [ebp+NTFS.ntfs_attr_size] |
806 | and eax, dword [ebp+NTFS.ntfs_attr_size+4] |
||
2288 | clevermous | 807 | cmp eax, -1 |
808 | jnz .testfz |
||
809 | ; if attribute is in auxiliary records, its size is defined only in first |
||
810 | mov eax, [esi+10h] |
||
811 | call ntfs_read_file_record |
||
3742 | clevermous | 812 | jnc @f |
2288 | clevermous | 813 | .errret_pop: |
3742 | clevermous | 814 | pop ecx ecx |
2288 | clevermous | 815 | jmp .errret |
3742 | clevermous | 816 | .errret2_pop: |
817 | xor eax, eax |
||
818 | jmp .errret_pop |
||
2288 | clevermous | 819 | @@: |
3742 | clevermous | 820 | mov eax, [ebp+NTFS.frs_buffer] |
2288 | clevermous | 821 | movzx ecx, word [eax+14h] |
822 | add eax, ecx |
||
3742 | clevermous | 823 | mov ecx, [ebp+NTFS.ntfs_cur_attr] |
2288 | clevermous | 824 | @@: |
825 | cmp dword [eax], -1 |
||
3742 | clevermous | 826 | jz .errret2_pop |
2288 | clevermous | 827 | cmp dword [eax], ecx |
828 | jz @f |
||
829 | .l1: |
||
830 | add eax, [eax+4] |
||
831 | jmp @b |
||
832 | @@: |
||
833 | cmp eax, 0x80 |
||
834 | jnz @f |
||
835 | cmp byte [eax+9], 0 |
||
836 | jnz .l1 |
||
837 | @@: |
||
838 | cmp byte [eax+8], 0 |
||
839 | jnz .sdnores |
||
840 | mov eax, [eax+10h] |
||
3742 | clevermous | 841 | mov dword [ebp+NTFS.ntfs_attr_size], eax |
842 | and dword [ebp+NTFS.ntfs_attr_size+4], 0 |
||
2288 | clevermous | 843 | jmp .testfz |
844 | .sdnores: |
||
845 | mov ecx, [eax+30h] |
||
3742 | clevermous | 846 | mov dword [ebp+NTFS.ntfs_attr_size], ecx |
2288 | clevermous | 847 | mov ecx, [eax+34h] |
3742 | clevermous | 848 | mov dword [ebp+NTFS.ntfs_attr_size+4], ecx |
2288 | clevermous | 849 | .testfz: |
850 | xor eax, eax |
||
851 | .testf: |
||
3742 | clevermous | 852 | imul eax, [ebp+NTFS.sectors_per_cluster] |
853 | cmp eax, [ebp+NTFS.ntfs_cur_offs] |
||
2288 | clevermous | 854 | pop eax |
855 | ja @f |
||
856 | mov edi, [esi+10h] ; keep previous iRecord |
||
857 | jmp .scanlistcont |
||
858 | @@: |
||
3742 | clevermous | 859 | pop ecx |
2288 | clevermous | 860 | .scanlistfound: |
861 | cmp edi, -1 |
||
862 | jnz @f |
||
863 | popad |
||
864 | ret |
||
865 | @@: |
||
3742 | clevermous | 866 | mov eax, [ebp+NTFS.ntfs_cur_iRecord] |
867 | mov [ebp+NTFS.ntfs_attr_iBaseRecord], eax |
||
2288 | clevermous | 868 | mov eax, edi |
869 | jmp .beginfindattr |
||
870 | .scanlistdone: |
||
3742 | clevermous | 871 | pop ecx |
872 | sub ecx, ebp |
||
873 | sub ecx, NTFS.ntfs_attrlist_buf-1Ah |
||
874 | cmp [ebp+NTFS.ntfs_cur_iRecord], 0 |
||
2288 | clevermous | 875 | jnz @f |
3742 | clevermous | 876 | sub ecx, NTFS.ntfs_attrlist_mft_buf-NTFS.ntfs_attrlist_buf |
2288 | clevermous | 877 | @@: |
3742 | clevermous | 878 | cmp ecx, 0x400 |
2288 | clevermous | 879 | jnz .scanlistfound |
880 | inc edx |
||
881 | push esi edi |
||
3742 | clevermous | 882 | lea esi, [ebp+NTFS.ntfs_attrlist_buf+0x200] |
883 | lea edi, [ebp+NTFS.ntfs_attrlist_buf] |
||
884 | cmp [ebp+NTFS.ntfs_cur_iRecord], 0 |
||
2288 | clevermous | 885 | jnz @f |
3742 | clevermous | 886 | lea esi, [ebp+NTFS.ntfs_attrlist_mft_buf+0x200] |
887 | lea edi, [ebp+NTFS.ntfs_attrlist_mft_buf] |
||
2288 | clevermous | 888 | @@: |
889 | mov ecx, 0x200/4 |
||
890 | rep movsd |
||
891 | mov eax, edi |
||
892 | pop edi esi |
||
893 | sub esi, 0x200 |
||
3742 | clevermous | 894 | push [ebp+NTFS.ntfs_cur_offs] |
895 | push [ebp+NTFS.ntfs_cur_size] |
||
896 | push [ebp+NTFS.ntfs_cur_read] |
||
897 | push [ebp+NTFS.ntfs_cur_buf] |
||
898 | push dword [ebp+NTFS.ntfs_attr_size] |
||
899 | push dword [ebp+NTFS.ntfs_attr_size+4] |
||
900 | or dword [ebp+NTFS.ntfs_attr_size], -1 |
||
901 | or dword [ebp+NTFS.ntfs_attr_size+4], -1 |
||
902 | mov [ebp+NTFS.ntfs_cur_offs], edx |
||
903 | mov [ebp+NTFS.ntfs_cur_size], 1 |
||
904 | and [ebp+NTFS.ntfs_cur_read], 0 |
||
905 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
906 | mov ecx, [ebp+NTFS.ntfs_attr_list] |
||
907 | push esi edx edi |
||
2288 | clevermous | 908 | call .doreadattr |
3742 | clevermous | 909 | pop edi edx esi |
910 | mov ecx, [ebp+NTFS.ntfs_cur_read] |
||
911 | pop dword [ebp+NTFS.ntfs_attr_size+4] |
||
912 | pop dword [ebp+NTFS.ntfs_attr_size] |
||
913 | pop [ebp+NTFS.ntfs_cur_buf] |
||
914 | pop [ebp+NTFS.ntfs_cur_read] |
||
915 | pop [ebp+NTFS.ntfs_cur_size] |
||
916 | pop [ebp+NTFS.ntfs_cur_offs] |
||
2288 | clevermous | 917 | jc .errret |
3742 | clevermous | 918 | lea ecx, [ecx+ebp+NTFS.ntfs_attrlist_buf+0x200-0x1A] |
919 | cmp [ebp+NTFS.ntfs_cur_iRecord], 0 |
||
2288 | clevermous | 920 | jnz .scanliststart |
3742 | clevermous | 921 | add ecx, NTFS.ntfs_attrlist_mft_buf-NTFS.ntfs_attrlist_buf |
2288 | clevermous | 922 | jmp .scanliststart |
923 | |||
924 | .doreadattr: |
||
3742 | clevermous | 925 | mov [ebp+NTFS.ntfs_bCanContinue], 0 |
2288 | clevermous | 926 | cmp byte [ecx+8], 0 |
927 | jnz .nonresident |
||
928 | mov eax, [ecx+10h] ; length |
||
929 | mov esi, eax |
||
3742 | clevermous | 930 | mov edx, [ebp+NTFS.ntfs_cur_offs] |
2288 | clevermous | 931 | shr eax, 9 |
932 | cmp eax, edx |
||
933 | jb .okret |
||
934 | shl edx, 9 |
||
935 | sub esi, edx |
||
936 | movzx eax, word [ecx+14h] |
||
937 | add edx, eax |
||
938 | add edx, ecx ; edx -> data |
||
3742 | clevermous | 939 | mov eax, [ebp+NTFS.ntfs_cur_size] |
2288 | clevermous | 940 | cmp eax, (0xFFFFFFFF shr 9)+1 |
941 | jbe @f |
||
942 | mov eax, (0xFFFFFFFF shr 9)+1 |
||
943 | @@: |
||
944 | shl eax, 9 |
||
945 | cmp eax, esi |
||
946 | jbe @f |
||
947 | mov eax, esi |
||
948 | @@: |
||
949 | ; eax = length, edx -> data |
||
3742 | clevermous | 950 | mov [ebp+NTFS.ntfs_cur_read], eax |
2288 | clevermous | 951 | mov ecx, eax |
952 | mov eax, edx |
||
3742 | clevermous | 953 | mov ebx, [ebp+NTFS.ntfs_cur_buf] |
2288 | clevermous | 954 | call memmove |
3742 | clevermous | 955 | and [ebp+NTFS.ntfs_cur_size], 0 ; CF=0 |
2288 | clevermous | 956 | ret |
957 | .nonresident: |
||
958 | ; Not all auxiliary records contain correct FileSize info |
||
3742 | clevermous | 959 | mov eax, dword [ebp+NTFS.ntfs_attr_size] |
960 | mov edx, dword [ebp+NTFS.ntfs_attr_size+4] |
||
2288 | clevermous | 961 | push eax |
962 | and eax, edx |
||
963 | cmp eax, -1 |
||
964 | pop eax |
||
965 | jnz @f |
||
966 | mov eax, [ecx+30h] ; FileSize |
||
967 | mov edx, [ecx+34h] |
||
3742 | clevermous | 968 | mov dword [ebp+NTFS.ntfs_attr_size], eax |
969 | mov dword [ebp+NTFS.ntfs_attr_size+4], edx |
||
2288 | clevermous | 970 | @@: |
971 | add eax, 0x1FF |
||
972 | adc edx, 0 |
||
973 | shrd eax, edx, 9 |
||
3742 | clevermous | 974 | sub eax, [ebp+NTFS.ntfs_cur_offs] |
2288 | clevermous | 975 | ja @f |
976 | ; return with nothing read |
||
3742 | clevermous | 977 | and [ebp+NTFS.ntfs_cur_size], 0 |
2288 | clevermous | 978 | .okret: |
979 | clc |
||
980 | ret |
||
981 | @@: |
||
982 | ; reduce read length |
||
3742 | clevermous | 983 | and [ebp+NTFS.ntfs_cur_tail], 0 |
984 | cmp [ebp+NTFS.ntfs_cur_size], eax |
||
2288 | clevermous | 985 | jb @f |
3742 | clevermous | 986 | mov [ebp+NTFS.ntfs_cur_size], eax |
987 | mov eax, dword [ebp+NTFS.ntfs_attr_size] |
||
2288 | clevermous | 988 | and eax, 0x1FF |
3742 | clevermous | 989 | mov [ebp+NTFS.ntfs_cur_tail], eax |
2288 | clevermous | 990 | @@: |
3742 | clevermous | 991 | cmp [ebp+NTFS.ntfs_cur_size], 0 |
2288 | clevermous | 992 | jz .okret |
3742 | clevermous | 993 | mov eax, [ebp+NTFS.ntfs_cur_offs] |
2288 | clevermous | 994 | xor edx, edx |
3742 | clevermous | 995 | div [ebp+NTFS.sectors_per_cluster] |
2288 | clevermous | 996 | sub eax, [ecx+10h] ; first_vbo |
997 | jb .okret |
||
998 | ; eax = cluster, edx = starting sector |
||
5994 | pathoswith | 999 | cmp [ebp+NTFS.ntfs_cur_attr], 0x80 |
1000 | jnz .sys |
||
1001 | cmp [ebp+NTFS.ntfs_cur_iRecord], 0 |
||
1002 | jz .sys |
||
1003 | push fs_read64_app |
||
1004 | cmp [ebp+NTFS.ntfsWriteAttr], 1 |
||
1005 | jnz @f |
||
1006 | mov dword[esp], fs_write64_app |
||
1007 | jmp @f |
||
1008 | .sys: |
||
1009 | push fs_read64_sys |
||
1010 | @@: |
||
2288 | clevermous | 1011 | sub esp, 10h |
1012 | movzx esi, word [ecx+20h] ; mcb_info_ofs |
||
1013 | add esi, ecx |
||
3742 | clevermous | 1014 | xor edi, edi |
5954 | pathoswith | 1015 | mov [ebp+NTFS.ntfsFragmentCount], 0 |
2288 | clevermous | 1016 | .readloop: |
1017 | call ntfs_decode_mcb_entry |
||
1018 | jnc .break |
||
3742 | clevermous | 1019 | add edi, [esp+8] |
2288 | clevermous | 1020 | sub eax, [esp] |
1021 | jae .readloop |
||
1022 | push ecx |
||
1023 | push eax |
||
1024 | add eax, [esp+8] |
||
3742 | clevermous | 1025 | add eax, edi |
1026 | imul eax, [ebp+NTFS.sectors_per_cluster] |
||
2288 | clevermous | 1027 | add eax, edx |
1028 | pop ecx |
||
1029 | neg ecx |
||
3742 | clevermous | 1030 | imul ecx, [ebp+NTFS.sectors_per_cluster] |
2288 | clevermous | 1031 | sub ecx, edx |
3742 | clevermous | 1032 | cmp ecx, [ebp+NTFS.ntfs_cur_size] |
2288 | clevermous | 1033 | jb @f |
3742 | clevermous | 1034 | mov ecx, [ebp+NTFS.ntfs_cur_size] |
2288 | clevermous | 1035 | @@: |
3742 | clevermous | 1036 | mov ebx, [ebp+NTFS.ntfs_cur_buf] |
5954 | pathoswith | 1037 | mov [ebp+NTFS.ntfsLastRead], eax |
1038 | push ecx |
||
1039 | xor edx, edx |
||
5994 | pathoswith | 1040 | call dword[esp+18h] |
5954 | pathoswith | 1041 | pop ecx |
3742 | clevermous | 1042 | test eax, eax |
2288 | clevermous | 1043 | jnz .errread2 |
5954 | pathoswith | 1044 | sub [ebp+NTFS.ntfs_cur_size], ecx |
1045 | add [ebp+NTFS.ntfs_cur_offs], ecx |
||
1046 | shl ecx, 9 |
||
1047 | add [ebp+NTFS.ntfs_cur_read], ecx |
||
1048 | add [ebp+NTFS.ntfs_cur_buf], ecx |
||
1049 | inc [ebp+NTFS.ntfsFragmentCount] |
||
2288 | clevermous | 1050 | pop ecx |
1051 | xor eax, eax |
||
1052 | xor edx, edx |
||
3742 | clevermous | 1053 | cmp [ebp+NTFS.ntfs_cur_size], 0 |
2288 | clevermous | 1054 | jnz .readloop |
5994 | pathoswith | 1055 | add esp, 14h |
3742 | clevermous | 1056 | mov eax, [ebp+NTFS.ntfs_cur_tail] |
2288 | clevermous | 1057 | test eax, eax |
1058 | jz @f |
||
1059 | sub eax, 0x200 |
||
3742 | clevermous | 1060 | add [ebp+NTFS.ntfs_cur_read], eax |
2288 | clevermous | 1061 | @@: |
1062 | clc |
||
1063 | ret |
||
1064 | .errread2: |
||
1065 | pop ecx |
||
5994 | pathoswith | 1066 | add esp, 14h |
2288 | clevermous | 1067 | stc |
1068 | ret |
||
1069 | .break: |
||
5994 | pathoswith | 1070 | add esp, 14h ; CF=0 |
3742 | clevermous | 1071 | mov [ebp+NTFS.ntfs_bCanContinue], 1 |
2288 | clevermous | 1072 | ret |
1073 | |||
1074 | ntfs_read_file_record: |
||
5954 | pathoswith | 1075 | ; in: eax = iRecord |
6080 | pathoswith | 1076 | ; out: [ebp+NTFS.frs_buffer] -> file record |
5954 | pathoswith | 1077 | ; CF=1 -> failed, eax = disk error code, eax=0 -> something with FS |
1078 | ; Read attr $DATA of $Mft, starting from eax*[ebp+NTFS.frs_size] |
||
2288 | clevermous | 1079 | push ecx edx |
3742 | clevermous | 1080 | mov ecx, [ebp+NTFS.frs_size] |
2288 | clevermous | 1081 | mul ecx |
1082 | shrd eax, edx, 9 |
||
1083 | shr edx, 9 |
||
3742 | clevermous | 1084 | jnz .errret |
1085 | push [ebp+NTFS.ntfs_attr_iRecord] |
||
1086 | push [ebp+NTFS.ntfs_attr_iBaseRecord] |
||
1087 | push [ebp+NTFS.ntfs_attr_offs] |
||
1088 | push [ebp+NTFS.ntfs_attr_list] |
||
1089 | push dword [ebp+NTFS.ntfs_attr_size+4] |
||
1090 | push dword [ebp+NTFS.ntfs_attr_size] |
||
1091 | push [ebp+NTFS.ntfs_cur_iRecord] |
||
1092 | push [ebp+NTFS.ntfs_cur_attr] |
||
1093 | push [ebp+NTFS.ntfs_cur_offs] |
||
1094 | push [ebp+NTFS.ntfs_cur_size] |
||
1095 | push [ebp+NTFS.ntfs_cur_buf] |
||
1096 | push [ebp+NTFS.ntfs_cur_read] |
||
1097 | mov [ebp+NTFS.ntfs_cur_attr], 0x80 ; $DATA |
||
1098 | and [ebp+NTFS.ntfs_cur_iRecord], 0 ; $Mft |
||
1099 | mov [ebp+NTFS.ntfs_cur_offs], eax |
||
2288 | clevermous | 1100 | shr ecx, 9 |
3742 | clevermous | 1101 | mov [ebp+NTFS.ntfs_cur_size], ecx |
1102 | mov eax, [ebp+NTFS.frs_buffer] |
||
1103 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
2288 | clevermous | 1104 | call ntfs_read_attr |
3742 | clevermous | 1105 | mov edx, [ebp+NTFS.ntfs_cur_read] |
1106 | pop [ebp+NTFS.ntfs_cur_read] |
||
1107 | pop [ebp+NTFS.ntfs_cur_buf] |
||
1108 | pop [ebp+NTFS.ntfs_cur_size] |
||
1109 | pop [ebp+NTFS.ntfs_cur_offs] |
||
1110 | pop [ebp+NTFS.ntfs_cur_attr] |
||
1111 | pop [ebp+NTFS.ntfs_cur_iRecord] |
||
1112 | pop dword [ebp+NTFS.ntfs_attr_size] |
||
1113 | pop dword [ebp+NTFS.ntfs_attr_size+4] |
||
1114 | pop [ebp+NTFS.ntfs_attr_list] |
||
1115 | pop [ebp+NTFS.ntfs_attr_offs] |
||
1116 | pop [ebp+NTFS.ntfs_attr_iBaseRecord] |
||
1117 | pop [ebp+NTFS.ntfs_attr_iRecord] |
||
1118 | jc .ret |
||
1119 | cmp edx, [ebp+NTFS.frs_size] |
||
2288 | clevermous | 1120 | jnz .errret |
3742 | clevermous | 1121 | mov eax, [ebp+NTFS.frs_buffer] |
2288 | clevermous | 1122 | cmp dword [eax], 'FILE' |
1123 | jnz .errret |
||
1124 | push ebx |
||
1125 | mov ebx, eax |
||
1126 | call ntfs_restore_usa_frs |
||
1127 | pop ebx |
||
3742 | clevermous | 1128 | jc .errret |
2288 | clevermous | 1129 | .ret: |
3742 | clevermous | 1130 | pop edx ecx |
2288 | clevermous | 1131 | ret |
3742 | clevermous | 1132 | .errret: |
2288 | clevermous | 1133 | pop edx ecx |
1134 | xor eax, eax |
||
3742 | clevermous | 1135 | stc |
2288 | clevermous | 1136 | ret |
1137 | |||
1138 | ntfs_restore_usa_frs: |
||
3742 | clevermous | 1139 | mov eax, [ebp+NTFS.frs_size] |
2288 | clevermous | 1140 | ntfs_restore_usa: |
6080 | pathoswith | 1141 | ; in: |
1142 | ; ebx -> record |
||
1143 | ; eax = size in bytes |
||
2288 | clevermous | 1144 | pushad |
1145 | shr eax, 9 |
||
1146 | mov ecx, eax |
||
1147 | inc eax |
||
1148 | cmp [ebx+6], ax |
||
1149 | jnz .err |
||
1150 | movzx eax, word [ebx+4] |
||
1151 | lea esi, [eax+ebx] |
||
1152 | lodsw |
||
1153 | mov edx, eax |
||
1154 | lea edi, [ebx+0x1FE] |
||
1155 | @@: |
||
1156 | cmp [edi], dx |
||
1157 | jnz .err |
||
1158 | lodsw |
||
1159 | stosw |
||
1160 | add edi, 0x1FE |
||
1161 | loop @b |
||
1162 | popad |
||
1163 | clc |
||
1164 | ret |
||
1165 | .err: |
||
1166 | popad |
||
1167 | stc |
||
1168 | ret |
||
1169 | |||
1170 | ntfs_decode_mcb_entry: |
||
6019 | pathoswith | 1171 | ; in: |
6080 | pathoswith | 1172 | ; esi -> MCB entry |
6019 | pathoswith | 1173 | ; esp -> buffer (16 bytes) |
1174 | ; out: |
||
6080 | pathoswith | 1175 | ; esi -> next MCB entry |
6019 | pathoswith | 1176 | ; esp -> data run size |
1177 | ; esp+8 -> cluster (delta) |
||
6080 | pathoswith | 1178 | ; CF=0 -> MCB end |
2288 | clevermous | 1179 | push eax ecx edi |
1180 | lea edi, [esp+16] |
||
1181 | xor eax, eax |
||
1182 | lodsb |
||
1183 | test al, al |
||
1184 | jz .end |
||
1185 | mov ecx, eax |
||
1186 | and ecx, 0xF |
||
1187 | cmp ecx, 8 |
||
1188 | ja .end |
||
1189 | push ecx |
||
1190 | rep movsb |
||
1191 | pop ecx |
||
1192 | sub ecx, 8 |
||
1193 | neg ecx |
||
1194 | cmp byte [esi-1], 80h |
||
1195 | jae .end |
||
1196 | push eax |
||
1197 | xor eax, eax |
||
1198 | rep stosb |
||
1199 | pop ecx |
||
1200 | shr ecx, 4 |
||
1201 | cmp ecx, 8 |
||
1202 | ja .end |
||
1203 | push ecx |
||
1204 | rep movsb |
||
1205 | pop ecx |
||
1206 | sub ecx, 8 |
||
1207 | neg ecx |
||
1208 | cmp byte [esi-1], 80h |
||
1209 | cmc |
||
1210 | sbb eax, eax |
||
1211 | rep stosb |
||
1212 | stc |
||
1213 | .end: |
||
1214 | pop edi ecx eax |
||
1215 | ret |
||
1216 | |||
1217 | unichar_toupper: |
||
1218 | push eax |
||
1219 | call uni2ansi_char |
||
1220 | cmp al, '_' |
||
1221 | jz .unk |
||
1222 | add esp, 4 |
||
1504 | diamond | 1223 | call char_toupper |
1224 | jmp ansi2uni_char |
||
1225 | .unk: |
||
1226 | pop eax |
||
1227 | ret |
||
2288 | clevermous | 1228 | |
1229 | ntfs_find_lfn: |
||
5954 | pathoswith | 1230 | ; in: [esi]+[esp+4] = name |
1231 | ; out: |
||
1232 | ; [ebp+NTFS.ntfs_cur_iRecord] = number of MFT fileRecord |
||
5994 | pathoswith | 1233 | ; eax -> index in the parent index node |
1234 | ; CF=1 -> file not found, eax=0 -> error |
||
3742 | clevermous | 1235 | mov [ebp+NTFS.ntfs_cur_iRecord], 5 ; start parse from root cluster |
2288 | clevermous | 1236 | .doit2: |
3742 | clevermous | 1237 | mov [ebp+NTFS.ntfs_cur_attr], 0x90 ; $INDEX_ROOT |
1238 | and [ebp+NTFS.ntfs_cur_offs], 0 |
||
1239 | mov eax, [ebp+NTFS.cur_index_size] |
||
1240 | mov [ebp+NTFS.ntfs_cur_size], eax |
||
1241 | mov eax, [ebp+NTFS.cur_index_buf] |
||
1242 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
2288 | clevermous | 1243 | call ntfs_read_attr |
5994 | pathoswith | 1244 | mov eax, 0 |
2288 | clevermous | 1245 | jnc @f |
1246 | .ret: |
||
3742 | clevermous | 1247 | ret 4 |
2288 | clevermous | 1248 | @@: |
3742 | clevermous | 1249 | cmp [ebp+NTFS.ntfs_cur_read], 0x20 |
2288 | clevermous | 1250 | jc .ret |
1251 | pushad |
||
3742 | clevermous | 1252 | mov esi, [ebp+NTFS.cur_index_buf] |
2288 | clevermous | 1253 | mov eax, [esi+14h] |
1254 | add eax, 10h |
||
3742 | clevermous | 1255 | cmp [ebp+NTFS.ntfs_cur_read], eax |
2288 | clevermous | 1256 | jae .readok1 |
1257 | add eax, 1FFh |
||
1258 | shr eax, 9 |
||
3742 | clevermous | 1259 | cmp eax, [ebp+NTFS.cur_index_size] |
2288 | clevermous | 1260 | ja @f |
1261 | .stc_ret: |
||
1262 | popad |
||
1263 | stc |
||
3742 | clevermous | 1264 | ret 4 |
2288 | clevermous | 1265 | @@: |
1266 | ; reallocate |
||
1267 | push eax |
||
5954 | pathoswith | 1268 | stdcall kernel_free, [ebp+NTFS.cur_index_buf] |
2288 | clevermous | 1269 | pop eax |
3742 | clevermous | 1270 | mov [ebp+NTFS.cur_index_size], eax |
5954 | pathoswith | 1271 | stdcall kernel_alloc, eax |
2288 | clevermous | 1272 | test eax, eax |
1273 | jnz @f |
||
3742 | clevermous | 1274 | and [ebp+NTFS.cur_index_size], 0 |
1275 | and [ebp+NTFS.cur_index_buf], 0 |
||
2288 | clevermous | 1276 | jmp .stc_ret |
1277 | @@: |
||
3742 | clevermous | 1278 | mov [ebp+NTFS.cur_index_buf], eax |
2288 | clevermous | 1279 | popad |
1280 | jmp .doit2 |
||
1281 | .readok1: |
||
3742 | clevermous | 1282 | mov edx, [esi+8] ; subnode_size |
1283 | shr edx, 9 |
||
1284 | cmp edx, [ebp+NTFS.cur_index_size] |
||
2288 | clevermous | 1285 | jbe .ok2 |
3742 | clevermous | 1286 | push esi edx |
5954 | pathoswith | 1287 | stdcall kernel_alloc, edx |
3742 | clevermous | 1288 | pop edx esi |
2288 | clevermous | 1289 | test eax, eax |
1290 | jz .stc_ret |
||
1291 | mov edi, eax |
||
3742 | clevermous | 1292 | mov ecx, [ebp+NTFS.cur_index_size] |
2288 | clevermous | 1293 | shl ecx, 9-2 |
1294 | rep movsd |
||
1295 | mov esi, eax |
||
3742 | clevermous | 1296 | mov [ebp+NTFS.cur_index_size], edx |
1297 | push esi edx |
||
5954 | pathoswith | 1298 | stdcall kernel_free, [ebp+NTFS.cur_index_buf] |
3742 | clevermous | 1299 | pop edx esi |
1300 | mov [ebp+NTFS.cur_index_buf], esi |
||
2288 | clevermous | 1301 | .ok2: |
1302 | add esi, 10h |
||
1303 | mov edi, [esp+4] |
||
3742 | clevermous | 1304 | ; edi -> name, esi -> current index data, edx = subnode size |
2288 | clevermous | 1305 | .scanloop: |
1306 | add esi, [esi] |
||
1307 | .scanloopint: |
||
1308 | test byte [esi+0Ch], 2 |
||
1309 | jnz .subnode |
||
1310 | push esi |
||
1311 | add esi, 0x52 |
||
1312 | movzx ecx, byte [esi-2] |
||
1313 | push edi |
||
1314 | @@: |
||
1315 | lodsw |
||
1316 | call unichar_toupper |
||
1317 | push eax |
||
1318 | mov al, [edi] |
||
1319 | inc edi |
||
1320 | cmp al, '/' |
||
1321 | jz .slash |
||
1322 | call char_toupper |
||
1323 | call ansi2uni_char |
||
1324 | cmp ax, [esp] |
||
1325 | pop eax |
||
1326 | loopz @b |
||
1327 | jz .found |
||
1328 | pop edi |
||
1329 | pop esi |
||
1330 | jb .subnode |
||
1331 | .scanloopcont: |
||
1332 | movzx eax, word [esi+8] |
||
1333 | add esi, eax |
||
1334 | jmp .scanloopint |
||
1335 | .slash: |
||
1336 | pop eax |
||
1337 | pop edi |
||
1338 | pop esi |
||
1339 | .subnode: |
||
1340 | test byte [esi+0Ch], 1 |
||
1341 | jz .notfound |
||
1342 | movzx eax, word [esi+8] |
||
1343 | mov eax, [esi+eax-8] |
||
3742 | clevermous | 1344 | imul eax, [ebp+NTFS.sectors_per_cluster] |
1345 | mov [ebp+NTFS.ntfs_cur_offs], eax |
||
1346 | mov [ebp+NTFS.ntfs_cur_attr], 0xA0 ; $INDEX_ALLOCATION |
||
1347 | mov [ebp+NTFS.ntfs_cur_size], edx |
||
1348 | mov eax, [ebp+NTFS.cur_index_buf] |
||
2288 | clevermous | 1349 | mov esi, eax |
3742 | clevermous | 1350 | mov [ebp+NTFS.ntfs_cur_buf], eax |
1351 | push edx |
||
2288 | clevermous | 1352 | call ntfs_read_attr |
3742 | clevermous | 1353 | pop edx |
1354 | mov eax, edx |
||
2288 | clevermous | 1355 | shl eax, 9 |
3742 | clevermous | 1356 | cmp [ebp+NTFS.ntfs_cur_read], eax |
5954 | pathoswith | 1357 | jnz .err |
2288 | clevermous | 1358 | cmp dword [esi], 'INDX' |
5954 | pathoswith | 1359 | jnz .err |
1360 | mov [ebp+NTFS.ntfs_cur_buf], esi |
||
2288 | clevermous | 1361 | mov ebx, esi |
1362 | call ntfs_restore_usa |
||
5954 | pathoswith | 1363 | jc .err |
2288 | clevermous | 1364 | add esi, 0x18 |
1365 | jmp .scanloop |
||
1366 | .notfound: |
||
5954 | pathoswith | 1367 | mov [esp+1Ch], esi |
1368 | .err: |
||
2288 | clevermous | 1369 | popad |
1370 | stc |
||
3742 | clevermous | 1371 | ret 4 |
2288 | clevermous | 1372 | .found: |
1373 | cmp byte [edi], 0 |
||
1374 | jz .done |
||
1375 | cmp byte [edi], '/' |
||
1376 | jz .next |
||
1377 | pop edi |
||
1378 | pop esi |
||
1379 | jmp .scanloopcont |
||
1380 | .done: |
||
1381 | .next: |
||
1382 | pop esi |
||
1383 | pop esi |
||
1384 | mov eax, [esi] |
||
3742 | clevermous | 1385 | mov [ebp+NTFS.ntfs_cur_iRecord], eax |
2288 | clevermous | 1386 | mov [esp+1Ch], esi |
1387 | mov [esp+4], edi |
||
1388 | popad |
||
1389 | inc esi |
||
1390 | cmp byte [esi-1], 0 |
||
1391 | jnz .doit2 |
||
3742 | clevermous | 1392 | cmp dword [esp+4], 0 |
2288 | clevermous | 1393 | jz @f |
3742 | clevermous | 1394 | mov esi, [esp+4] |
1395 | mov dword [esp+4], 0 |
||
2288 | clevermous | 1396 | jmp .doit2 |
1397 | @@: |
||
3742 | clevermous | 1398 | ret 4 |
2288 | clevermous | 1399 | |
1400 | ;---------------------------------------------------------------- |
||
5954 | pathoswith | 1401 | ntfs_ReadFile: |
2288 | clevermous | 1402 | cmp byte [esi], 0 |
1403 | jnz @f |
||
1404 | or ebx, -1 |
||
3598 | clevermous | 1405 | movi eax, ERROR_ACCESS_DENIED |
2288 | clevermous | 1406 | ret |
1407 | @@: |
||
3742 | clevermous | 1408 | call ntfs_lock |
1409 | stdcall ntfs_find_lfn, [esp+4] |
||
2288 | clevermous | 1410 | jnc .found |
3742 | clevermous | 1411 | call ntfs_unlock |
2288 | clevermous | 1412 | or ebx, -1 |
3598 | clevermous | 1413 | movi eax, ERROR_FILE_NOT_FOUND |
2288 | clevermous | 1414 | ret |
1415 | .found: |
||
3742 | clevermous | 1416 | mov [ebp+NTFS.ntfs_cur_attr], 0x80 ; $DATA |
1417 | and [ebp+NTFS.ntfs_cur_offs], 0 |
||
1418 | and [ebp+NTFS.ntfs_cur_size], 0 |
||
2288 | clevermous | 1419 | call ntfs_read_attr |
1420 | jnc @f |
||
3742 | clevermous | 1421 | call ntfs_unlock |
2288 | clevermous | 1422 | or ebx, -1 |
3598 | clevermous | 1423 | movi eax, ERROR_ACCESS_DENIED |
2288 | clevermous | 1424 | ret |
1425 | @@: |
||
1426 | pushad |
||
1427 | and dword [esp+10h], 0 |
||
1428 | xor eax, eax |
||
3742 | clevermous | 1429 | cmp dword [ebx+8], 0x200 |
2288 | clevermous | 1430 | jb @f |
1431 | .eof0: |
||
1432 | popad |
||
1433 | xor ebx, ebx |
||
1434 | .eof: |
||
5954 | pathoswith | 1435 | push ERROR_END_OF_FILE |
3742 | clevermous | 1436 | call ntfs_unlock |
1437 | pop eax |
||
2288 | clevermous | 1438 | ret |
1439 | @@: |
||
3742 | clevermous | 1440 | mov ecx, [ebx+12] |
1441 | mov edx, [ebx+16] |
||
1442 | mov eax, [ebx+4] |
||
2288 | clevermous | 1443 | test eax, 0x1FF |
1444 | jz .alignedstart |
||
1445 | push edx |
||
3742 | clevermous | 1446 | mov edx, [ebx+8] |
2288 | clevermous | 1447 | shrd eax, edx, 9 |
1400 | turbanoff | 1448 | pop edx |
3742 | clevermous | 1449 | mov [ebp+NTFS.ntfs_cur_offs], eax |
1450 | mov [ebp+NTFS.ntfs_cur_size], 1 |
||
1451 | lea eax, [ebp+NTFS.ntfs_bitmap_buf] |
||
1452 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
2288 | clevermous | 1453 | call ntfs_read_attr.continue |
3742 | clevermous | 1454 | mov eax, [ebx+4] |
2288 | clevermous | 1455 | and eax, 0x1FF |
3742 | clevermous | 1456 | lea esi, [ebp+NTFS.ntfs_bitmap_buf+eax] |
1457 | sub eax, [ebp+NTFS.ntfs_cur_read] |
||
2288 | clevermous | 1458 | jae .eof0 |
1459 | neg eax |
||
1460 | push ecx |
||
1461 | cmp ecx, eax |
||
1462 | jb @f |
||
1463 | mov ecx, eax |
||
1464 | @@: |
||
1465 | mov [esp+10h+4], ecx |
||
1466 | mov edi, edx |
||
1467 | rep movsb |
||
1468 | mov edx, edi |
||
1469 | pop ecx |
||
1470 | sub ecx, [esp+10h] |
||
1471 | jnz @f |
||
1472 | .retok: |
||
1473 | popad |
||
3742 | clevermous | 1474 | call ntfs_unlock |
2288 | clevermous | 1475 | xor eax, eax |
1400 | turbanoff | 1476 | ret |
2288 | clevermous | 1477 | @@: |
3742 | clevermous | 1478 | cmp [ebp+NTFS.ntfs_cur_read], 0x200 |
2288 | clevermous | 1479 | jz .alignedstart |
1480 | .eof_ebx: |
||
1481 | popad |
||
1482 | jmp .eof |
||
1483 | .alignedstart: |
||
3742 | clevermous | 1484 | mov eax, [ebx+4] |
2288 | clevermous | 1485 | push edx |
3742 | clevermous | 1486 | mov edx, [ebx+8] |
2288 | clevermous | 1487 | add eax, 511 |
1488 | adc edx, 0 |
||
1489 | shrd eax, edx, 9 |
||
1490 | pop edx |
||
3742 | clevermous | 1491 | mov [ebp+NTFS.ntfs_cur_offs], eax |
1492 | mov [ebp+NTFS.ntfs_cur_buf], edx |
||
2288 | clevermous | 1493 | mov eax, ecx |
1494 | shr eax, 9 |
||
3742 | clevermous | 1495 | mov [ebp+NTFS.ntfs_cur_size], eax |
1496 | add eax, [ebp+NTFS.ntfs_cur_offs] |
||
2288 | clevermous | 1497 | push eax |
1498 | call ntfs_read_attr.continue |
||
3742 | clevermous | 1499 | pop [ebp+NTFS.ntfs_cur_offs] |
1500 | mov eax, [ebp+NTFS.ntfs_cur_read] |
||
2288 | clevermous | 1501 | add [esp+10h], eax |
1502 | mov eax, ecx |
||
1503 | and eax, not 0x1FF |
||
3742 | clevermous | 1504 | cmp [ebp+NTFS.ntfs_cur_read], eax |
2288 | clevermous | 1505 | jnz .eof_ebx |
1506 | and ecx, 0x1FF |
||
1507 | jz .retok |
||
3742 | clevermous | 1508 | add edx, [ebp+NTFS.ntfs_cur_read] |
1509 | mov [ebp+NTFS.ntfs_cur_size], 1 |
||
1510 | lea eax, [ebp+NTFS.ntfs_bitmap_buf] |
||
1511 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
2288 | clevermous | 1512 | call ntfs_read_attr.continue |
3742 | clevermous | 1513 | cmp [ebp+NTFS.ntfs_cur_read], ecx |
2288 | clevermous | 1514 | jb @f |
3742 | clevermous | 1515 | mov [ebp+NTFS.ntfs_cur_read], ecx |
2288 | clevermous | 1516 | @@: |
3742 | clevermous | 1517 | xchg ecx, [ebp+NTFS.ntfs_cur_read] |
2288 | clevermous | 1518 | push ecx |
1519 | mov edi, edx |
||
3742 | clevermous | 1520 | lea esi, [ebp+NTFS.ntfs_bitmap_buf] |
2288 | clevermous | 1521 | add [esp+10h+4], ecx |
1522 | rep movsb |
||
1523 | pop ecx |
||
1524 | xor eax, eax |
||
3742 | clevermous | 1525 | cmp ecx, [ebp+NTFS.ntfs_cur_read] |
2288 | clevermous | 1526 | jz @f |
1527 | mov al, ERROR_END_OF_FILE |
||
1528 | @@: |
||
1529 | mov [esp+1Ch], eax |
||
3742 | clevermous | 1530 | call ntfs_unlock |
2288 | clevermous | 1531 | popad |
1532 | ret |
||
1400 | turbanoff | 1533 | |
2288 | clevermous | 1534 | ;---------------------------------------------------------------- |
3742 | clevermous | 1535 | ntfs_ReadFolder: |
1536 | call ntfs_lock |
||
2288 | clevermous | 1537 | mov eax, 5 ; root cluster |
1538 | cmp byte [esi], 0 |
||
1539 | jz .doit |
||
3742 | clevermous | 1540 | stdcall ntfs_find_lfn, [esp+4] |
2288 | clevermous | 1541 | jnc .doit2 |
1542 | .notfound: |
||
1543 | or ebx, -1 |
||
1544 | push ERROR_FILE_NOT_FOUND |
||
1545 | .pop_ret: |
||
3742 | clevermous | 1546 | call ntfs_unlock |
2288 | clevermous | 1547 | pop eax |
1548 | ret |
||
1549 | .doit: |
||
3742 | clevermous | 1550 | mov [ebp+NTFS.ntfs_cur_iRecord], eax |
2288 | clevermous | 1551 | .doit2: |
3742 | clevermous | 1552 | mov [ebp+NTFS.ntfs_cur_attr], 0x10 ; $STANDARD_INFORMATION |
1553 | and [ebp+NTFS.ntfs_cur_offs], 0 |
||
1554 | mov [ebp+NTFS.ntfs_cur_size], 1 |
||
1555 | lea eax, [ebp+NTFS.ntfs_bitmap_buf] |
||
1556 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
2288 | clevermous | 1557 | call ntfs_read_attr |
1558 | jc .notfound |
||
3742 | clevermous | 1559 | mov [ebp+NTFS.ntfs_cur_attr], 0x90 ; $INDEX_ROOT |
1560 | and [ebp+NTFS.ntfs_cur_offs], 0 |
||
1561 | mov eax, [ebp+NTFS.cur_index_size] |
||
1562 | mov [ebp+NTFS.ntfs_cur_size], eax |
||
1563 | mov eax, [ebp+NTFS.cur_index_buf] |
||
1564 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
2288 | clevermous | 1565 | call ntfs_read_attr |
1566 | jnc .ok |
||
3742 | clevermous | 1567 | test eax, eax |
2288 | clevermous | 1568 | jz .notfound |
1569 | or ebx, -1 |
||
5994 | pathoswith | 1570 | push ERROR_DEVICE |
2288 | clevermous | 1571 | jmp .pop_ret |
1572 | .ok: |
||
3742 | clevermous | 1573 | cmp [ebp+NTFS.ntfs_cur_read], 0x20 |
2288 | clevermous | 1574 | jae @f |
1575 | or ebx, -1 |
||
1576 | .fserr: |
||
1577 | push ERROR_FAT_TABLE |
||
1578 | jmp .pop_ret |
||
1579 | @@: |
||
1580 | pushad |
||
3742 | clevermous | 1581 | mov esi, [ebp+NTFS.cur_index_buf] |
2288 | clevermous | 1582 | mov eax, [esi+14h] |
1583 | add eax, 10h |
||
3742 | clevermous | 1584 | cmp [ebp+NTFS.ntfs_cur_read], eax |
2288 | clevermous | 1585 | jae .readok1 |
1586 | add eax, 1FFh |
||
1587 | shr eax, 9 |
||
3742 | clevermous | 1588 | cmp eax, [ebp+NTFS.cur_index_size] |
2288 | clevermous | 1589 | ja @f |
1590 | popad |
||
1591 | jmp .fserr |
||
1592 | @@: |
||
1593 | ; reallocate |
||
1594 | push eax |
||
5954 | pathoswith | 1595 | stdcall kernel_free, [ebp+NTFS.cur_index_buf] |
2288 | clevermous | 1596 | pop eax |
3742 | clevermous | 1597 | mov [ebp+NTFS.cur_index_size], eax |
5954 | pathoswith | 1598 | stdcall kernel_alloc, eax |
2288 | clevermous | 1599 | test eax, eax |
1600 | jnz @f |
||
3742 | clevermous | 1601 | and [ebp+NTFS.cur_index_size], 0 |
1602 | and [ebp+NTFS.cur_index_buf], 0 |
||
2288 | clevermous | 1603 | .nomem: |
3742 | clevermous | 1604 | call ntfs_unlock |
2288 | clevermous | 1605 | popad |
1606 | or ebx, -1 |
||
5994 | pathoswith | 1607 | movi eax, ERROR_OUT_OF_MEMORY |
2288 | clevermous | 1608 | ret |
1609 | @@: |
||
3742 | clevermous | 1610 | mov [ebp+NTFS.cur_index_buf], eax |
2288 | clevermous | 1611 | popad |
1612 | jmp .doit2 |
||
1613 | .readok1: |
||
3742 | clevermous | 1614 | mov edx, [esi+8] ; subnode_size |
1615 | shr edx, 9 |
||
1616 | mov [ebp+NTFS.cur_subnode_size], edx |
||
1617 | cmp edx, [ebp+NTFS.cur_index_size] |
||
2288 | clevermous | 1618 | jbe .ok2 |
3742 | clevermous | 1619 | push esi edx |
5954 | pathoswith | 1620 | stdcall kernel_alloc, edx |
3742 | clevermous | 1621 | pop edx esi |
2288 | clevermous | 1622 | test eax, eax |
1623 | jz .nomem |
||
1624 | mov edi, eax |
||
3742 | clevermous | 1625 | mov ecx, [ebp+NTFS.cur_index_size] |
2288 | clevermous | 1626 | shl ecx, 9-2 |
1627 | rep movsd |
||
1628 | mov esi, eax |
||
3742 | clevermous | 1629 | mov [ebp+NTFS.cur_index_size], edx |
5954 | pathoswith | 1630 | stdcall kernel_free, [ebp+NTFS.cur_index_buf] |
3742 | clevermous | 1631 | mov [ebp+NTFS.cur_index_buf], esi |
2288 | clevermous | 1632 | .ok2: |
1633 | add esi, 10h |
||
3742 | clevermous | 1634 | mov edx, [ebx+16] |
1635 | push dword [ebx+8] ; read ANSI/UNICODE name |
||
2288 | clevermous | 1636 | ; init header |
1637 | mov edi, edx |
||
1638 | mov ecx, 32/4 |
||
1639 | xor eax, eax |
||
1640 | rep stosd |
||
1641 | mov byte [edx], 1 ; version |
||
3742 | clevermous | 1642 | mov ecx, [ebx+12] |
1643 | mov ebx, [ebx+4] |
||
2288 | clevermous | 1644 | push edx |
1645 | mov edx, esp |
||
3742 | clevermous | 1646 | ; edi -> BDFE, esi -> current index data, ebx = first wanted block, |
2288 | clevermous | 1647 | ; ecx = number of blocks to read |
1648 | ; edx -> parameters block: dd |
||
3742 | clevermous | 1649 | cmp [ebp+NTFS.ntfs_cur_iRecord], 5 |
2288 | clevermous | 1650 | jz .skip_specials |
1651 | ; dot and dotdot entries |
||
1652 | push esi |
||
1653 | xor esi, esi |
||
1654 | call .add_special_entry |
||
1655 | inc esi |
||
1656 | call .add_special_entry |
||
1657 | pop esi |
||
1658 | .skip_specials: |
||
1659 | ; at first, dump index root |
||
1660 | add esi, [esi] |
||
1661 | .dump_root: |
||
1662 | test byte [esi+0Ch], 2 |
||
1663 | jnz .dump_root_done |
||
1664 | call .add_entry |
||
1665 | movzx eax, word [esi+8] |
||
1666 | add esi, eax |
||
1667 | jmp .dump_root |
||
1668 | .dump_root_done: |
||
1669 | ; now dump all subnodes |
||
1670 | push ecx edi |
||
3742 | clevermous | 1671 | lea edi, [ebp+NTFS.ntfs_bitmap_buf] |
1672 | mov [ebp+NTFS.ntfs_cur_buf], edi |
||
2288 | clevermous | 1673 | mov ecx, 0x400/4 |
1674 | xor eax, eax |
||
1675 | rep stosd |
||
3742 | clevermous | 1676 | mov [ebp+NTFS.ntfs_cur_attr], 0xB0 ; $BITMAP |
1677 | and [ebp+NTFS.ntfs_cur_offs], 0 |
||
1678 | mov [ebp+NTFS.ntfs_cur_size], 2 |
||
2288 | clevermous | 1679 | call ntfs_read_attr |
1680 | pop edi ecx |
||
1681 | push 0 ; save offset in $BITMAP attribute |
||
3742 | clevermous | 1682 | and [ebp+NTFS.ntfs_cur_offs], 0 |
2288 | clevermous | 1683 | .dumploop: |
3742 | clevermous | 1684 | mov [ebp+NTFS.ntfs_cur_attr], 0xA0 |
1685 | mov eax, [ebp+NTFS.cur_subnode_size] |
||
1686 | mov [ebp+NTFS.ntfs_cur_size], eax |
||
1687 | mov eax, [ebp+NTFS.cur_index_buf] |
||
2288 | clevermous | 1688 | mov esi, eax |
3742 | clevermous | 1689 | mov [ebp+NTFS.ntfs_cur_buf], eax |
1690 | push [ebp+NTFS.ntfs_cur_offs] |
||
1691 | mov eax, [ebp+NTFS.ntfs_cur_offs] |
||
1692 | imul eax, [ebp+NTFS.cur_subnode_size] |
||
1693 | mov [ebp+NTFS.ntfs_cur_offs], eax |
||
2288 | clevermous | 1694 | call ntfs_read_attr |
3742 | clevermous | 1695 | pop [ebp+NTFS.ntfs_cur_offs] |
1696 | mov eax, [ebp+NTFS.cur_subnode_size] |
||
2288 | clevermous | 1697 | shl eax, 9 |
3742 | clevermous | 1698 | cmp [ebp+NTFS.ntfs_cur_read], eax |
2288 | clevermous | 1699 | jnz .done |
1700 | push eax |
||
3742 | clevermous | 1701 | mov eax, [ebp+NTFS.ntfs_cur_offs] |
2288 | clevermous | 1702 | and eax, 0x400*8-1 |
3742 | clevermous | 1703 | bt dword [ebp+NTFS.ntfs_bitmap_buf], eax |
2288 | clevermous | 1704 | pop eax |
1705 | jnc .dump_subnode_done |
||
1706 | cmp dword [esi], 'INDX' |
||
1707 | jnz .dump_subnode_done |
||
1708 | push ebx |
||
1709 | mov ebx, esi |
||
1710 | call ntfs_restore_usa |
||
1711 | pop ebx |
||
1712 | jc .dump_subnode_done |
||
1713 | add esi, 0x18 |
||
1714 | add esi, [esi] |
||
1715 | .dump_subnode: |
||
1716 | test byte [esi+0Ch], 2 |
||
1717 | jnz .dump_subnode_done |
||
1718 | call .add_entry |
||
1719 | movzx eax, word [esi+8] |
||
1720 | add esi, eax |
||
1721 | jmp .dump_subnode |
||
1722 | .dump_subnode_done: |
||
3742 | clevermous | 1723 | inc [ebp+NTFS.ntfs_cur_offs] |
1724 | test [ebp+NTFS.ntfs_cur_offs], 0x400*8-1 |
||
2288 | clevermous | 1725 | jnz .dumploop |
3742 | clevermous | 1726 | mov [ebp+NTFS.ntfs_cur_attr], 0xB0 |
2288 | clevermous | 1727 | push ecx edi |
3742 | clevermous | 1728 | lea edi, [ebp+NTFS.ntfs_bitmap_buf] |
1729 | mov [ebp+NTFS.ntfs_cur_buf], edi |
||
2288 | clevermous | 1730 | mov ecx, 0x400/4 |
1731 | xor eax, eax |
||
1732 | rep stosd |
||
1733 | pop edi ecx |
||
1734 | pop eax |
||
3742 | clevermous | 1735 | push [ebp+NTFS.ntfs_cur_offs] |
2288 | clevermous | 1736 | inc eax |
3742 | clevermous | 1737 | mov [ebp+NTFS.ntfs_cur_offs], eax |
1738 | mov [ebp+NTFS.ntfs_cur_size], 2 |
||
2288 | clevermous | 1739 | push eax |
1740 | call ntfs_read_attr |
||
1741 | pop eax |
||
3742 | clevermous | 1742 | pop [ebp+NTFS.ntfs_cur_offs] |
2288 | clevermous | 1743 | push eax |
1744 | jmp .dumploop |
||
1745 | .done: |
||
1746 | pop eax |
||
1747 | pop edx |
||
1748 | mov ebx, [edx+4] |
||
1749 | pop edx |
||
1750 | xor eax, eax |
||
1751 | dec ecx |
||
1752 | js @f |
||
1753 | mov al, ERROR_END_OF_FILE |
||
1754 | @@: |
||
1755 | mov [esp+1Ch], eax |
||
1756 | mov [esp+10h], ebx |
||
3742 | clevermous | 1757 | call ntfs_unlock |
2288 | clevermous | 1758 | popad |
1759 | ret |
||
1760 | |||
1761 | .add_special_entry: |
||
1762 | mov eax, [edx] |
||
1763 | inc dword [eax+8] ; new file found |
||
1764 | dec ebx |
||
1765 | jns .ret |
||
1766 | dec ecx |
||
1767 | js .ret |
||
1768 | inc dword [eax+4] ; new file block copied |
||
1769 | mov eax, [edx+4] |
||
1770 | mov [edi+4], eax |
||
1771 | ; mov eax, dword [ntfs_bitmap_buf+0x20] |
||
1772 | ; or al, 0x10 |
||
1773 | mov eax, 0x10 |
||
1774 | stosd |
||
1775 | scasd |
||
1776 | push edx |
||
3742 | clevermous | 1777 | mov eax, dword [ebp+NTFS.ntfs_bitmap_buf] |
1778 | mov edx, dword [ebp+NTFS.ntfs_bitmap_buf+4] |
||
2288 | clevermous | 1779 | call ntfs_datetime_to_bdfe |
3742 | clevermous | 1780 | mov eax, dword [ebp+NTFS.ntfs_bitmap_buf+0x18] |
1781 | mov edx, dword [ebp+NTFS.ntfs_bitmap_buf+0x1C] |
||
2288 | clevermous | 1782 | call ntfs_datetime_to_bdfe |
3742 | clevermous | 1783 | mov eax, dword [ebp+NTFS.ntfs_bitmap_buf+8] |
1784 | mov edx, dword [ebp+NTFS.ntfs_bitmap_buf+0xC] |
||
2288 | clevermous | 1785 | call ntfs_datetime_to_bdfe |
1786 | pop edx |
||
1787 | xor eax, eax |
||
1788 | stosd |
||
1789 | stosd |
||
1790 | mov al, '.' |
||
1791 | push edi ecx |
||
1792 | lea ecx, [esi+1] |
||
1793 | test byte [edi-0x24], 1 |
||
1794 | jz @f |
||
1795 | rep stosw |
||
1796 | pop ecx |
||
1797 | xor eax, eax |
||
1798 | stosw |
||
1799 | pop edi |
||
1800 | add edi, 520 |
||
1801 | ret |
||
1802 | @@: |
||
1803 | rep stosb |
||
1804 | pop ecx |
||
1805 | xor eax, eax |
||
1806 | stosb |
||
1807 | pop edi |
||
1808 | add edi, 264 |
||
1809 | .ret: |
||
1810 | ret |
||
1811 | |||
1812 | .add_entry: |
||
1813 | ; do not return DOS 8.3 names |
||
1814 | cmp byte [esi+0x51], 2 |
||
1815 | jz .ret |
||
1816 | ; do not return system files |
||
1817 | ; ... note that there will be no bad effects if system files also were reported ... |
||
1818 | cmp dword [esi], 0x10 |
||
1819 | jb .ret |
||
1820 | mov eax, [edx] |
||
1821 | inc dword [eax+8] ; new file found |
||
1822 | dec ebx |
||
1823 | jns .ret |
||
1824 | dec ecx |
||
1825 | js .ret |
||
1826 | inc dword [eax+4] ; new file block copied |
||
1827 | mov eax, [edx+4] ; flags |
||
1828 | call ntfs_direntry_to_bdfe |
||
1829 | push ecx esi edi |
||
1830 | movzx ecx, byte [esi+0x50] |
||
1831 | add esi, 0x52 |
||
1832 | test byte [edi-0x24], 1 |
||
1833 | jz .ansi |
||
1834 | shr ecx, 1 |
||
1835 | rep movsd |
||
1836 | adc ecx, ecx |
||
1837 | rep movsw |
||
1838 | and word [edi], 0 |
||
1839 | pop edi |
||
1840 | add edi, 520 |
||
1841 | pop esi ecx |
||
1842 | ret |
||
1843 | .ansi: |
||
1844 | jecxz .skip |
||
1845 | @@: |
||
1846 | lodsw |
||
1847 | call uni2ansi_char |
||
1848 | stosb |
||
1849 | loop @b |
||
1850 | .skip: |
||
1851 | xor al, al |
||
1852 | stosb |
||
1853 | pop edi |
||
1854 | add edi, 264 |
||
1855 | pop esi ecx |
||
1856 | ret |
||
1857 | |||
1858 | ntfs_direntry_to_bdfe: |
||
1859 | mov [edi+4], eax ; ANSI/UNICODE name |
||
1860 | mov eax, [esi+48h] |
||
1861 | test eax, 0x10000000 |
||
1862 | jz @f |
||
1863 | and eax, not 0x10000000 |
||
1864 | or al, 0x10 |
||
1865 | @@: |
||
1866 | stosd |
||
1867 | scasd |
||
1868 | push edx |
||
1869 | mov eax, [esi+0x18] |
||
1870 | mov edx, [esi+0x1C] |
||
1871 | call ntfs_datetime_to_bdfe |
||
1872 | mov eax, [esi+0x30] |
||
1873 | mov edx, [esi+0x34] |
||
1874 | call ntfs_datetime_to_bdfe |
||
1875 | mov eax, [esi+0x20] |
||
1876 | mov edx, [esi+0x24] |
||
1877 | call ntfs_datetime_to_bdfe |
||
1878 | pop edx |
||
1879 | mov eax, [esi+0x40] |
||
1880 | stosd |
||
1881 | mov eax, [esi+0x44] |
||
1882 | stosd |
||
1883 | ret |
||
1884 | |||
1885 | iglobal |
||
1886 | _24 dd 24 |
||
1887 | _60 dd 60 |
||
1888 | _10000000 dd 10000000 |
||
1889 | days400year dd 365*400+100-4+1 |
||
1890 | days100year dd 365*100+25-1 |
||
1891 | days4year dd 365*4+1 |
||
1892 | days1year dd 365 |
||
5954 | pathoswith | 1893 | months dd 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 |
1894 | months2 dd 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 |
||
2288 | clevermous | 1895 | _400 dd 400 |
1896 | _100 dd 100 |
||
1897 | endg |
||
1898 | |||
1899 | ntfs_datetime_to_bdfe: |
||
1900 | ; edx:eax = number of 100-nanosecond intervals since January 1, 1601, in UTC |
||
1901 | push eax |
||
1902 | mov eax, edx |
||
1903 | xor edx, edx |
||
1904 | div [_10000000] |
||
1905 | xchg eax, [esp] |
||
1906 | div [_10000000] |
||
1907 | pop edx |
||
1908 | .sec: |
||
1909 | ; edx:eax = number of seconds since January 1, 1601 |
||
1910 | push eax |
||
1911 | mov eax, edx |
||
1912 | xor edx, edx |
||
1913 | div [_60] |
||
1914 | xchg eax, [esp] |
||
1915 | div [_60] |
||
1916 | mov [edi], dl |
||
1917 | pop edx |
||
1918 | ; edx:eax = number of minutes |
||
1919 | div [_60] |
||
1920 | mov [edi+1], dl |
||
1921 | ; eax = number of hours (note that 2^64/(10^7*60*60) < 2^32) |
||
1922 | xor edx, edx |
||
1923 | div [_24] |
||
1924 | mov [edi+2], dl |
||
1925 | mov [edi+3], byte 0 |
||
1926 | ; eax = number of days since January 1, 1601 |
||
1927 | xor edx, edx |
||
1928 | div [days400year] |
||
1929 | imul eax, 400 |
||
1930 | add eax, 1601 |
||
1931 | mov [edi+6], ax |
||
1932 | mov eax, edx |
||
1933 | xor edx, edx |
||
1934 | div [days100year] |
||
1935 | cmp al, 4 |
||
1936 | jnz @f |
||
1937 | dec eax |
||
1938 | add edx, [days100year] |
||
1939 | @@: |
||
1940 | imul eax, 100 |
||
1941 | add [edi+6], ax |
||
1942 | mov eax, edx |
||
1943 | xor edx, edx |
||
1944 | div [days4year] |
||
1945 | shl eax, 2 |
||
1946 | add [edi+6], ax |
||
1947 | mov eax, edx |
||
1948 | xor edx, edx |
||
1949 | div [days1year] |
||
1950 | cmp al, 4 |
||
1951 | jnz @f |
||
1952 | dec eax |
||
1953 | add edx, [days1year] |
||
1954 | @@: |
||
1955 | add [edi+6], ax |
||
1956 | push esi edx |
||
1957 | mov esi, months |
||
1958 | movzx eax, word [edi+6] |
||
1959 | test al, 3 |
||
1960 | jnz .noleap |
||
1961 | xor edx, edx |
||
1962 | push eax |
||
1963 | div [_400] |
||
1964 | pop eax |
||
1965 | test edx, edx |
||
1966 | jz .leap |
||
1967 | xor edx, edx |
||
1968 | div [_100] |
||
1969 | test edx, edx |
||
1970 | jz .noleap |
||
1971 | .leap: |
||
1972 | mov esi, months2 |
||
1973 | .noleap: |
||
1974 | pop edx |
||
1975 | xor eax, eax |
||
1976 | inc eax |
||
1977 | @@: |
||
1978 | sub edx, [esi] |
||
1979 | jb @f |
||
1980 | add esi, 4 |
||
1981 | inc eax |
||
1982 | jmp @b |
||
1983 | @@: |
||
1984 | add edx, [esi] |
||
1985 | pop esi |
||
1986 | inc edx |
||
1987 | mov [edi+4], dl |
||
1988 | mov [edi+5], al |
||
1989 | add edi, 8 |
||
1990 | ret |
||
1991 | |||
1992 | ;---------------------------------------------------------------- |
||
3742 | clevermous | 1993 | ntfs_CreateFolder: |
5954 | pathoswith | 1994 | mov [ebp+NTFS.ntfsFolder], 1 |
1995 | jmp @f |
||
5994 | pathoswith | 1996 | |
5954 | pathoswith | 1997 | ntfs_CreateFile: |
1998 | mov [ebp+NTFS.ntfsFolder], 0 |
||
1999 | @@: |
||
2000 | cmp byte [esi], 0 |
||
2001 | jnz @f |
||
2288 | clevermous | 2002 | xor ebx, ebx |
6019 | pathoswith | 2003 | movi eax, ERROR_ACCESS_DENIED |
2288 | clevermous | 2004 | ret |
5954 | pathoswith | 2005 | @@: ; 1. Search file |
2006 | call ntfs_lock |
||
2007 | stdcall ntfs_find_lfn, [esp+4] |
||
6080 | pathoswith | 2008 | jc .notFound |
2009 | ; found, rewrite |
||
6019 | pathoswith | 2010 | cmp [ebp+NTFS.ntfs_cur_iRecord], 16 |
2011 | jc ntfsDenied |
||
2012 | cmp [ebp+NTFS.ntfsFolder], 1 |
||
6080 | pathoswith | 2013 | jz .folder |
2014 | xor ecx, ecx |
||
2015 | mov edx, [ebx+12] |
||
2016 | mov [ebp+NTFS.nodeLastRead], ecx |
||
2017 | cmp [eax+fileRealSize+4], ecx |
||
2018 | jnz @f |
||
2019 | cmp [eax+fileRealSize], edx |
||
2020 | jz .readAttribute |
||
2021 | @@: ; set file size in the directory |
||
2022 | cmp [ebp+NTFS.ntfsFragmentCount], 1 |
||
2023 | jnz ntfsUnsupported ; record fragmented |
||
2024 | mov edi, [ebp+NTFS.cur_index_buf] |
||
2025 | cmp dword [edi], 'INDX' |
||
2026 | jz @f |
||
2027 | mov esi, [ebp+NTFS.frs_buffer] |
||
2028 | mov ecx, [esi+recordRealSize] |
||
2029 | shr ecx, 2 |
||
2030 | rep movsd |
||
2031 | mov esi, [ebp+NTFS.ntfs_attr_offs] |
||
2032 | mov cl, [esi+attributeOffset] |
||
2033 | sub esi, [ebp+NTFS.frs_buffer] |
||
2034 | add eax, ecx |
||
2035 | add eax, esi |
||
2036 | xor ecx, ecx |
||
2037 | @@: |
||
2038 | mov [eax+fileRealSize], edx |
||
2039 | mov [eax+fileRealSize+4], ecx |
||
2040 | mov eax, [ebp+NTFS.ntfsLastRead] |
||
2041 | mov [ebp+NTFS.nodeLastRead], eax |
||
2042 | .readAttribute: |
||
5994 | pathoswith | 2043 | mov [ebp+NTFS.ntfs_cur_attr], 0x80 |
2044 | mov [ebp+NTFS.ntfs_cur_offs], 0 |
||
2045 | mov [ebp+NTFS.ntfs_cur_size], 0 |
||
2046 | call ntfs_read_attr |
||
6080 | pathoswith | 2047 | jc ntfsFail |
2048 | mov ecx, [ebp+NTFS.frs_buffer] |
||
2049 | mov eax, edx |
||
2050 | xor edx, edx |
||
2051 | cmp word [ecx+baseRecordReuse], 0 |
||
6019 | pathoswith | 2052 | jnz ntfsUnsupported ; auxiliary record |
6080 | pathoswith | 2053 | cmp byte [ecx+hardLinkCounter], 1 |
6019 | pathoswith | 2054 | jnz ntfsUnsupported ; file copying required |
5994 | pathoswith | 2055 | mov ecx, [ebp+NTFS.ntfs_attr_offs] |
2056 | cmp byte [ecx+nonResidentFlag], 1 |
||
6019 | pathoswith | 2057 | jnz ntfsUnsupported ; resident $DATA |
6080 | pathoswith | 2058 | test eax, eax |
2059 | jz ntfsUnsupported |
||
2060 | cmp [ecx+attributeRealSize+4], edx |
||
2061 | jnz @f |
||
5994 | pathoswith | 2062 | cmp [ecx+attributeRealSize], eax |
6080 | pathoswith | 2063 | jz ntfs_WriteFile.writeNode |
2064 | @@: |
||
2065 | jmp ntfs_WriteFile.resizeAttribute |
||
5994 | pathoswith | 2066 | |
6080 | pathoswith | 2067 | .folder: |
2068 | bt dword [eax+fileFlags], 28 |
||
2069 | jnc ntfsDenied |
||
2070 | push 0 |
||
2071 | jmp ntfsOut |
||
2072 | |||
2073 | .notFound: ; create |
||
2074 | test eax, eax |
||
2075 | jz ntfsFail |
||
2076 | cmp [ebp+NTFS.ntfsFragmentCount], 1 |
||
2077 | jnz ntfsUnsupported ; record fragmented |
||
6019 | pathoswith | 2078 | ; 2. Prepare directory record |
5954 | pathoswith | 2079 | mov ecx, esi |
2080 | @@: ; count characters |
||
2081 | inc ecx |
||
2082 | cmp byte [ecx], '/' |
||
6080 | pathoswith | 2083 | jz ntfsNotFound ; path folder not found |
5954 | pathoswith | 2084 | cmp byte [ecx], 0 |
2085 | jnz @b |
||
2086 | sub ecx, esi |
||
2087 | push ecx |
||
6080 | pathoswith | 2088 | lea ecx, [ecx*2+52h+7] ; precalculate index length |
2089 | and ecx, not 7 ; align 8 |
||
5954 | pathoswith | 2090 | mov edi, [ebp+NTFS.cur_index_buf] |
2091 | push esi |
||
2092 | push ecx |
||
6019 | pathoswith | 2093 | cmp dword [edi], 'INDX' |
5954 | pathoswith | 2094 | jz .indexRecord |
6019 | pathoswith | 2095 | mov esi, [ebp+NTFS.frs_buffer] ; indexRoot |
5954 | pathoswith | 2096 | mov edx, [esi+recordRealSize] |
2097 | add edx, ecx |
||
2098 | cmp [esi+recordAllocatedSize], edx |
||
2099 | jnc @f |
||
2100 | add esp, 12 |
||
6019 | pathoswith | 2101 | jmp ntfsUnsupported ; indexAllocation required |
5954 | pathoswith | 2102 | @@: ; index fits in the indexRoot |
2103 | mov [esi+recordRealSize], edx |
||
2104 | mov ecx, edx |
||
2105 | shr ecx, 2 |
||
2106 | rep movsd |
||
2107 | mov edi, [ebp+NTFS.ntfs_attr_offs] |
||
2108 | sub edi, [ebp+NTFS.frs_buffer] |
||
2109 | add edi, [ebp+NTFS.cur_index_buf] |
||
2110 | mov esi, [esp] |
||
2111 | add [edi+sizeWithHeader], esi |
||
2112 | add [edi+sizeWithoutHeader], esi |
||
6019 | pathoswith | 2113 | mov cl, [edi+attributeOffset] |
5954 | pathoswith | 2114 | add edi, ecx |
2115 | add [edi+16+nodeRealSize], esi |
||
2116 | add [edi+16+nodeAllocatedSize], esi |
||
2117 | sub eax, [ebp+NTFS.cur_index_buf] |
||
2118 | add eax, edi |
||
2119 | mov edi, [ebp+NTFS.cur_index_buf] |
||
2120 | add edi, edx |
||
2121 | sub edi, 4 |
||
2122 | jmp .common |
||
2288 | clevermous | 2123 | |
5954 | pathoswith | 2124 | .indexRecord: |
6019 | pathoswith | 2125 | mov edx, [edi+28] |
5954 | pathoswith | 2126 | add edx, ecx |
6019 | pathoswith | 2127 | cmp [edi+32], edx |
5954 | pathoswith | 2128 | jnc @f |
2129 | add esp, 12 |
||
6019 | pathoswith | 2130 | jmp ntfsUnsupported ; new node required |
5954 | pathoswith | 2131 | @@: ; index fits in the node |
6019 | pathoswith | 2132 | mov [edi+28], edx |
2133 | lea edi, [edi+edx+24-4] |
||
5954 | pathoswith | 2134 | .common: |
2135 | mov esi, edi |
||
2136 | sub esi, [esp] |
||
2137 | mov ecx, esi |
||
2138 | sub ecx, eax ; eax = pointer in the node |
||
2139 | shr ecx, 2 |
||
2140 | inc ecx |
||
2141 | std |
||
2142 | rep movsd ; move forward, make space |
||
2143 | mov ecx, [esp] |
||
2144 | shr ecx, 2 |
||
2145 | xor eax, eax |
||
2146 | rep stosd |
||
2147 | cld |
||
2148 | add edi, 4 |
||
2149 | pop eax |
||
2150 | pop esi |
||
2151 | mov [edi+indexAllocatedSize], ax ; fill index with data |
||
2152 | mov eax, [esp] |
||
6080 | pathoswith | 2153 | shl eax, 1 |
2154 | add eax, 42h |
||
5954 | pathoswith | 2155 | mov [edi+indexRawSize], ax |
2156 | mov eax, [ebp+NTFS.ntfs_attr_iRecord] |
||
2157 | mov [edi+directoryRecordReference], eax |
||
2158 | mov eax, [ebp+NTFS.frs_buffer] |
||
2159 | mov eax, [eax+reuseCounter] |
||
2160 | mov [edi+directoryReferenceReuse], ax |
||
2161 | mov eax, [ebx+12] |
||
2162 | mov [ebp+NTFS.fileRealSize], eax |
||
2163 | mov [edi+fileRealSize], eax |
||
2164 | mov ecx, [ebp+NTFS.sectors_per_cluster] |
||
2165 | shl ecx, 9 |
||
2166 | add eax, ecx |
||
2167 | dec eax |
||
2168 | xor edx, edx |
||
2169 | div ecx |
||
2170 | mov [ebp+NTFS.fileDataSize], eax |
||
2171 | mul ecx |
||
2172 | mov [edi+fileAllocatedSize], eax |
||
2173 | pop ecx |
||
2174 | mov [ebp+NTFS.indexOffset], edi |
||
2175 | mov [edi+fileNameLength], cl |
||
2176 | add edi, 52h |
||
2177 | @@: ; record filename |
||
2178 | lodsb |
||
2179 | call ansi2uni_char |
||
2180 | stosw |
||
2181 | dec ecx |
||
2182 | jnz @b |
||
2183 | mov eax, [ebp+NTFS.ntfsLastRead] |
||
2184 | mov [ebp+NTFS.nodeLastRead], eax |
||
2185 | cmp [ebp+NTFS.ntfsFolder], 0 |
||
2186 | jz @f |
||
2187 | mov edi, [ebp+NTFS.indexOffset] |
||
6080 | pathoswith | 2188 | bts dword [edi+fileFlags], 28 |
5954 | pathoswith | 2189 | jmp .mftBitmap |
2190 | |||
2191 | @@: ; 3. File data |
||
2192 | cmp [ebp+NTFS.fileRealSize], 0 |
||
2193 | jz .mftBitmap |
||
6080 | pathoswith | 2194 | mov edi, [ebp+NTFS.BitmapStart] |
2195 | call ntfsSpaceAlloc |
||
2196 | jc ntfsDiskFull |
||
5954 | pathoswith | 2197 | mov [ebp+NTFS.fileDataStart], eax |
2198 | mul [ebp+NTFS.sectors_per_cluster] |
||
2199 | mov ecx, [ebp+NTFS.fileRealSize] |
||
2200 | add ecx, 511 |
||
2201 | shr ecx, 9 |
||
2202 | mov ebx, [ebx+16] |
||
2203 | call fs_write64_app |
||
2204 | test eax, eax |
||
6019 | pathoswith | 2205 | jnz ntfsDevice |
5954 | pathoswith | 2206 | ; 4. MFT record |
2207 | .mftBitmap: ; search for free record |
||
2208 | mov edi, [ebp+NTFS.mftBitmapBuffer] |
||
2209 | mov ecx, [ebp+NTFS.mftBitmapSize] |
||
2210 | mov al, -1 |
||
2211 | add edi, 3 |
||
2212 | sub ecx, 3 |
||
2213 | repz scasb |
||
2214 | dec edi |
||
2215 | movzx eax, byte [edi] |
||
2216 | not al |
||
2217 | bsf ecx, eax |
||
6019 | pathoswith | 2218 | jz ntfsUnsupported ; no free records |
2219 | bts [edi], ecx |
||
2220 | ; get record location |
||
5954 | pathoswith | 2221 | sub edi, [ebp+NTFS.mftBitmapBuffer] |
2222 | shl edi, 3 |
||
2223 | add edi, ecx |
||
2224 | mov [ebp+NTFS.newMftRecord], edi |
||
2225 | mov eax, [ebp+NTFS.frs_size] |
||
2226 | shr eax, 9 |
||
2227 | mul edi |
||
2228 | mov [ebp+NTFS.ntfs_cur_iRecord], 0 |
||
2229 | mov [ebp+NTFS.ntfs_cur_attr], 0x80 |
||
2230 | mov [ebp+NTFS.ntfs_cur_offs], eax |
||
2231 | mov [ebp+NTFS.ntfs_cur_size], 1 |
||
2232 | mov eax, [ebp+NTFS.frs_buffer] |
||
2233 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
2234 | call ntfs_read_attr |
||
2235 | cmp [ebp+NTFS.ntfs_cur_read], 0 |
||
2236 | jnz .mftRecord |
||
6019 | pathoswith | 2237 | ; extend MFT $DATA |
5954 | pathoswith | 2238 | mov eax, [ebp+NTFS.mft_cluster] |
2239 | mul [ebp+NTFS.sectors_per_cluster] |
||
2240 | cmp eax, [ebp+NTFS.ntfsLastRead] |
||
6019 | pathoswith | 2241 | jnz ntfsUnsupported ; auxiliary record |
5954 | pathoswith | 2242 | mov edi, [ebp+NTFS.ntfs_attr_offs] |
2243 | mov ebx, [ebp+NTFS.sectors_per_cluster] |
||
2244 | shl ebx, 9+3 |
||
2245 | add dword [edi+lastVCN], 8 |
||
2246 | add [edi+attributeAllocatedSize], ebx |
||
5994 | pathoswith | 2247 | adc byte [edi+attributeAllocatedSize+4], 0 |
5954 | pathoswith | 2248 | add [edi+attributeRealSize], ebx |
5994 | pathoswith | 2249 | adc byte [edi+attributeRealSize+4], 0 |
5954 | pathoswith | 2250 | add [edi+initialDataSize], ebx |
5994 | pathoswith | 2251 | adc byte [edi+initialDataSize+4], 0 |
6019 | pathoswith | 2252 | movzx eax, byte [edi+dataRunsOffset] |
2253 | add edi, eax |
||
2254 | mov al, [edi] |
||
5954 | pathoswith | 2255 | inc edi |
2256 | shl eax, 4 |
||
2257 | shr al, 4 |
||
2258 | mov cl, 4 |
||
2259 | sub cl, al |
||
2260 | shl cl, 3 |
||
2261 | add ah, al |
||
2262 | shr eax, 8 |
||
2263 | cmp byte [edi+eax], 0 |
||
6019 | pathoswith | 2264 | jnz ntfsUnsupported ; $MFT fragmented |
5954 | pathoswith | 2265 | mov al, 8 |
2266 | mov edx, [edi] |
||
2267 | rol eax, cl |
||
2268 | rol edx, cl |
||
2269 | add eax, edx |
||
6019 | pathoswith | 2270 | jc ntfsUnsupported |
5954 | pathoswith | 2271 | ror eax, cl |
2272 | shr edx, cl |
||
2273 | mov [edi], eax |
||
2274 | add edx, [ebp+NTFS.mft_cluster] |
||
2275 | mov esi, edx |
||
2276 | mov ecx, edx |
||
2277 | and ecx, 7 |
||
2278 | shr edx, 3 |
||
2279 | add edx, [ebp+NTFS.BitmapBuffer] |
||
5994 | pathoswith | 2280 | mov ax, [edx] |
2281 | shr ax, cl |
||
2282 | test al, al |
||
6019 | pathoswith | 2283 | jnz ntfsUnsupported |
5994 | pathoswith | 2284 | dec al |
5954 | pathoswith | 2285 | xchg [edx], al |
2286 | mov [edx+1], al |
||
2287 | stdcall kernel_alloc, ebx |
||
2288 | test eax, eax |
||
6019 | pathoswith | 2289 | jz ntfsNoMemory |
5954 | pathoswith | 2290 | mov ecx, ebx |
2291 | shr ecx, 2 |
||
2292 | mov edi, eax |
||
2293 | push ebx |
||
2294 | mov ebx, eax |
||
2295 | xor eax, eax |
||
2296 | rep stosd |
||
2297 | mov eax, esi |
||
2298 | mul [ebp+NTFS.sectors_per_cluster] |
||
2299 | pop ecx |
||
2300 | shr ecx, 9 |
||
2301 | call fs_write64_sys ; clear new records |
||
2302 | stdcall kernel_free, ebx |
||
2303 | mov eax, esi |
||
2304 | shr eax, 3+9 |
||
2305 | mov ebx, eax |
||
2306 | shl ebx, 9 |
||
2307 | add ebx, [ebp+NTFS.BitmapBuffer] |
||
2308 | add eax, [ebp+NTFS.BitmapLocation] |
||
2309 | mov ecx, 1 |
||
2310 | xor edx, edx |
||
2311 | call fs_write64_app ; partition bitmap |
||
2312 | test eax, eax |
||
6019 | pathoswith | 2313 | jnz ntfsDevice |
5954 | pathoswith | 2314 | mov eax, [ebp+NTFS.frs_buffer] |
2315 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
2316 | call writeRecord ; $MFT |
||
2317 | test eax, eax |
||
6019 | pathoswith | 2318 | jnz ntfsDevice |
5954 | pathoswith | 2319 | mov eax, [ebp+NTFS.mftmirr_cluster] |
2320 | mul [ebp+NTFS.sectors_per_cluster] |
||
2321 | mov ebx, [ebp+NTFS.frs_buffer] |
||
2322 | movzx ecx, word [ebx+updateSequenceSize] |
||
2323 | dec ecx |
||
2324 | call fs_write64_sys ; $MFTMirr |
||
2325 | test eax, eax |
||
6019 | pathoswith | 2326 | jnz ntfsDevice |
5954 | pathoswith | 2327 | mov eax, [ebp+NTFS.ntfs_cur_offs] |
2328 | add [ebp+NTFS.ntfsLastRead], eax |
||
2329 | .mftRecord: |
||
2330 | mov esi, [ebp+NTFS.indexOffset] |
||
2331 | mov edi, [ebp+NTFS.frs_buffer] |
||
2332 | xor eax, eax |
||
2333 | movzx ecx, word [esi+indexAllocatedSize] |
||
2334 | add ecx, 8+30h+48h+50h+8 |
||
2335 | push ecx |
||
2336 | shr ecx, 2 |
||
2337 | rep stosd |
||
2338 | mov edi, [ebp+NTFS.frs_buffer] |
||
6019 | pathoswith | 2339 | ; record header |
5954 | pathoswith | 2340 | mov dword[edi], 'FILE' |
2341 | mov byte [edi+updateSequenceOffset], 2ah |
||
2342 | mov byte [edi+updateSequenceSize], 3 |
||
2343 | mov byte [edi+hardLinkCounter], 1 |
||
2344 | mov byte [edi+attributeOffset], 30h |
||
6080 | pathoswith | 2345 | popd [edi+recordRealSize] |
5954 | pathoswith | 2346 | mov word [edi+recordAllocatedSize], 1024 |
2347 | mov byte [edi+newAttributeID], 3 |
||
2348 | rdtsc |
||
2349 | mov [edi+2ah], ax |
||
2350 | add edi, 30h |
||
6019 | pathoswith | 2351 | ; $StandardInformation |
5954 | pathoswith | 2352 | mov byte [edi+attributeType], 10h |
2353 | mov byte [edi+sizeWithHeader], 48h |
||
2354 | mov byte [edi+sizeWithoutHeader], 30h |
||
2355 | mov byte [edi+attributeOffset], 18h |
||
2356 | add edi, 48h |
||
6019 | pathoswith | 2357 | ; $FileName |
5954 | pathoswith | 2358 | mov byte [edi+attributeType], 30h |
2359 | mov byte [edi+attributeID], 1 |
||
2360 | mov cx, [esi+indexRawSize] |
||
2361 | mov [edi+sizeWithoutHeader], ecx |
||
2362 | mov cx, [esi+indexAllocatedSize] |
||
2363 | add ecx, 8 |
||
2364 | mov [edi+sizeWithHeader], ecx |
||
2365 | mov byte [edi+attributeOffset], 18h |
||
6019 | pathoswith | 2366 | mov byte [edi+indexedFlag], 1 |
5954 | pathoswith | 2367 | add edi, 18h |
2368 | add esi, 16 |
||
2369 | sub ecx, 18h |
||
2370 | shr ecx, 2 |
||
2371 | rep movsd |
||
6080 | pathoswith | 2372 | mov byte [edi+sizeWithHeader], 50h |
2373 | mov byte [edi+attributeID], 2 |
||
2374 | mov dword[edi+50h], -1 ; $End |
||
5954 | pathoswith | 2375 | cmp [ebp+NTFS.ntfsFolder], 0 |
2376 | jnz @f |
||
6019 | pathoswith | 2377 | ; $Data |
5954 | pathoswith | 2378 | mov byte [edi+attributeType], 80h |
2379 | cmp [ebp+NTFS.fileRealSize], 0 |
||
2380 | jz .zeroSize |
||
2381 | mov esi, [ebp+NTFS.indexOffset] |
||
6080 | pathoswith | 2382 | mov eax, [ebp+NTFS.fileDataSize] |
2383 | dec eax |
||
2384 | mov [edi+lastVCN], eax |
||
5954 | pathoswith | 2385 | mov byte [edi+nonResidentFlag], 1 |
2386 | mov byte [edi+dataRunsOffset], 40h |
||
2387 | mov eax, [esi+fileAllocatedSize] |
||
2388 | mov [edi+attributeAllocatedSize], eax |
||
2389 | mov eax, [esi+fileRealSize] |
||
2390 | mov [edi+attributeRealSize], eax |
||
2391 | mov [edi+initialDataSize], eax |
||
6080 | pathoswith | 2392 | mov esi, edi |
2393 | add edi, 40h |
||
2394 | call createMcbEntry |
||
5954 | pathoswith | 2395 | mov al, 1 |
2396 | jmp .writeMftRecord |
||
2397 | |||
2398 | .zeroSize: |
||
2399 | mov byte [edi+attributeOffset], 18h |
||
2400 | mov al, 1 |
||
2401 | jmp .writeMftRecord |
||
2402 | |||
2403 | @@: ; $IndexRoot |
||
2404 | mov byte [edi+attributeType], 90h |
||
2405 | mov byte [edi+nameLength], 4 |
||
2406 | mov byte [edi+nameOffset], 18h |
||
2407 | mov byte [edi+sizeWithoutHeader], 30h |
||
2408 | mov byte [edi+attributeOffset], 20h |
||
2409 | mov dword[edi+18h], 490024h ; unicode $I30 |
||
2410 | mov dword[edi+18h+4], 300033h |
||
6019 | pathoswith | 2411 | mov byte [edi+20h+attributeType], 30h |
2412 | mov byte [edi+20h+collationRule], 1 |
||
5954 | pathoswith | 2413 | mov eax, [ebp+NTFS.sectors_per_cluster] |
2414 | shl eax, 9 |
||
6019 | pathoswith | 2415 | mov [edi+20h+indexRecordSize], eax |
2416 | mov byte [edi+20h+indexRecordSizeClus], 1 |
||
2417 | mov byte [edi+30h+indexOffset], 16 |
||
2418 | mov byte [edi+30h+nodeRealSize], 32 |
||
2419 | mov byte [edi+30h+nodeAllocatedSize], 32 |
||
2420 | mov byte [edi+40h+indexAllocatedSize], 16 |
||
2421 | mov byte [edi+40h+indexFlags], 2 |
||
5954 | pathoswith | 2422 | mov al, 3 |
2423 | .writeMftRecord: |
||
2424 | mov edi, [ebp+NTFS.frs_buffer] |
||
6080 | pathoswith | 2425 | mov [ebp+NTFS.ntfs_cur_buf], edi |
5954 | pathoswith | 2426 | mov [edi+recordFlags], al |
2427 | call writeRecord |
||
2428 | test eax, eax |
||
6019 | pathoswith | 2429 | jnz ntfsDevice |
2430 | ; write MFT bitmap |
||
5954 | pathoswith | 2431 | mov eax, [ebp+NTFS.newMftRecord] |
2432 | shr eax, 3+9 |
||
2433 | mov ebx, eax |
||
2434 | shl ebx, 9 |
||
2435 | add eax, [ebp+NTFS.mftBitmapLocation] |
||
2436 | add ebx, [ebp+NTFS.mftBitmapBuffer] |
||
2437 | mov ecx, 1 |
||
2438 | xor edx, edx |
||
2439 | call fs_write64_sys |
||
2440 | test eax, eax |
||
6019 | pathoswith | 2441 | jnz ntfsDevice |
2442 | ; 5. Write partition bitmap |
||
5954 | pathoswith | 2443 | cmp [ebp+NTFS.ntfsFolder], 0 |
2444 | jnz @f |
||
2445 | cmp [ebp+NTFS.fileRealSize], 0 |
||
2446 | jz @f |
||
6080 | pathoswith | 2447 | mov eax, [ebp+NTFS.fileDataStart] |
2448 | mov ecx, [ebp+NTFS.fileDataSize] |
||
2449 | add ecx, eax |
||
5954 | pathoswith | 2450 | add ecx, 4095 |
2451 | shr ecx, 3+9 |
||
2452 | shr eax, 3+9 |
||
2453 | sub ecx, eax |
||
2454 | mov ebx, eax |
||
2455 | shl ebx, 9 |
||
2456 | add eax, [ebp+NTFS.BitmapLocation] |
||
2457 | add ebx, [ebp+NTFS.BitmapBuffer] |
||
2458 | xor edx, edx |
||
2459 | call fs_write64_app |
||
2460 | test eax, eax |
||
6019 | pathoswith | 2461 | jnz ntfsDevice |
5954 | pathoswith | 2462 | @@: |
2463 | mov edi, [ebp+NTFS.indexOffset] |
||
2464 | mov eax, [ebp+NTFS.newMftRecord] |
||
2465 | mov [edi+fileRecordReference], eax |
||
6019 | pathoswith | 2466 | ; 6. Write directory node |
5954 | pathoswith | 2467 | mov eax, [ebp+NTFS.nodeLastRead] |
2468 | mov [ebp+NTFS.ntfsLastRead], eax |
||
2469 | mov eax, [ebp+NTFS.cur_index_buf] |
||
2470 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
2471 | call writeRecord |
||
6019 | pathoswith | 2472 | mov ebx, [ebp+NTFS.fileRealSize] |
2473 | ntfsDone: |
||
5954 | pathoswith | 2474 | mov esi, [ebp+PARTITION.Disk] |
2475 | call disk_sync |
||
2476 | call ntfs_unlock |
||
6019 | pathoswith | 2477 | xor eax, eax |
5954 | pathoswith | 2478 | ret |
2479 | |||
2480 | writeRecord: |
||
6080 | pathoswith | 2481 | ; make updateSequence and write to disk |
5954 | pathoswith | 2482 | ; in: |
6080 | pathoswith | 2483 | ; [ebp+NTFS.ntfs_cur_buf] -> record |
5954 | pathoswith | 2484 | ; [ebp+NTFS.ntfsLastRead] = partition sector |
2485 | mov esi, [ebp+NTFS.ntfs_cur_buf] |
||
2486 | mov edi, esi |
||
2487 | movzx ecx, word [esi+updateSequenceOffset] |
||
2488 | add edi, ecx |
||
2489 | mov ax, [edi] |
||
6080 | pathoswith | 2490 | inc ax |
2491 | stosw |
||
5954 | pathoswith | 2492 | mov cx, [esi+updateSequenceSize] |
2493 | dec ecx |
||
2494 | push ecx |
||
2495 | @@: |
||
2496 | add esi, 510 |
||
2497 | movsw |
||
2498 | mov [esi-2], ax |
||
2499 | dec ecx |
||
2500 | jnz @b |
||
2501 | mov eax, [ebp+NTFS.ntfsLastRead] |
||
2502 | mov ebx, [ebp+NTFS.ntfs_cur_buf] |
||
2503 | pop ecx |
||
2504 | xor edx, edx |
||
2505 | jmp fs_write64_sys |
||
2506 | |||
6080 | pathoswith | 2507 | createMcbEntry: |
2508 | ; in: |
||
2509 | ; [ebp+NTFS.fileDataStart] = position value |
||
2510 | ; [ebp+NTFS.fileDataSize] = size value |
||
2511 | ; edi -> destination |
||
2512 | ; esi -> attribute header |
||
2513 | mov eax, [ebp+NTFS.fileDataStart] |
||
2514 | xor edx, edx |
||
2515 | shl eax, 1 |
||
2516 | jnc @f |
||
2517 | not eax |
||
2518 | @@: |
||
2519 | inc edx |
||
2520 | shr eax, 8 |
||
2521 | jnz @b |
||
2522 | mov eax, [ebp+NTFS.fileDataSize] |
||
2523 | shl eax, 1 |
||
2524 | xor ecx, ecx |
||
2525 | @@: |
||
2526 | inc ecx |
||
2527 | shr eax, 8 |
||
2528 | jnz @b |
||
2529 | lea eax, [edi+edx+1] |
||
2530 | add eax, ecx |
||
2531 | sub eax, esi |
||
2532 | sub ax, [esi+sizeWithHeader] |
||
2533 | jc @f |
||
2534 | add word [esi+sizeWithHeader], 8 ; extend attribute |
||
2535 | mov esi, [ebp+NTFS.frs_buffer] |
||
2536 | mov eax, [esi+recordRealSize] |
||
2537 | add eax, 8 |
||
2538 | cmp [esi+recordAllocatedSize], eax |
||
2539 | jc .end ; no space in the record |
||
2540 | mov [esi+recordRealSize], eax |
||
2541 | push ecx edi |
||
2542 | add esi, eax |
||
2543 | mov ecx, esi |
||
2544 | sub ecx, edi |
||
2545 | sub ecx, 8 |
||
2546 | shr ecx, 2 |
||
2547 | mov edi, esi |
||
2548 | sub edi, 4 |
||
2549 | sub esi, 12 |
||
2550 | std |
||
2551 | rep movsd |
||
2552 | cld |
||
2553 | pop edi ecx |
||
2554 | @@: |
||
2555 | mov eax, edx |
||
2556 | shl eax, 4 |
||
2557 | add eax, ecx |
||
2558 | stosb |
||
2559 | lea esi, [ebp+NTFS.fileDataSize] |
||
2560 | rep movsb |
||
2561 | lea esi, [ebp+NTFS.fileDataStart] |
||
2562 | mov ecx, edx |
||
2563 | rep movsb |
||
2564 | .end: |
||
2565 | ret |
||
2566 | |||
2567 | resizeAttribute: |
||
2568 | ; in: |
||
2569 | ; [ebp+NTFS.frs_buffer] -> file record |
||
2570 | ; [ebp+NTFS.ntfs_attr_offs] -> attribute |
||
2571 | ; edx:eax = new size |
||
2572 | ; out: |
||
2573 | ; CF=1 -> eax = error code |
||
2574 | mov esi, [ebp+NTFS.ntfs_attr_offs] |
||
2575 | mov ecx, [ebp+NTFS.sectors_per_cluster] |
||
2576 | shl ecx, 9 |
||
2577 | mov dword [ebp+NTFS.ntfs_attr_size], eax |
||
2578 | mov dword [ebp+NTFS.ntfs_attr_size+4], edx |
||
2579 | mov [esi+attributeRealSize], eax |
||
2580 | mov [esi+attributeRealSize+4], edx |
||
2581 | mov [esi+initialDataSize], eax |
||
2582 | mov [esi+initialDataSize+4], edx |
||
2583 | sub eax, 1 |
||
2584 | sbb edx, 0 |
||
2585 | div ecx |
||
2586 | mov edi, eax |
||
2587 | inc eax |
||
2588 | mul ecx |
||
2589 | mov [esi+attributeAllocatedSize], eax |
||
2590 | mov [esi+attributeAllocatedSize+4], edx |
||
2591 | mov ecx, [esi+lastVCN] |
||
2592 | mov [esi+lastVCN], edi |
||
2593 | movzx eax, byte [esi+dataRunsOffset] |
||
2594 | sub edi, ecx |
||
2595 | jz .done |
||
2596 | jc .shrinkAttribute |
||
2597 | ; extend attribute |
||
2598 | mov [ebp+NTFS.fileDataSize], edi |
||
2599 | xor edi, edi |
||
2600 | add esi, eax |
||
2601 | push edi edi edi edi |
||
2602 | @@: |
||
2603 | mov edx, eax |
||
2604 | mov eax, esi |
||
2605 | add edi, [esp+8] |
||
2606 | call ntfs_decode_mcb_entry |
||
2607 | jc @b |
||
2608 | mov [esp+4], edx |
||
2609 | mov [esp+12], edi |
||
2610 | add edi, [esp] |
||
2611 | push edi |
||
2612 | shr edi, 5 |
||
2613 | shl edi, 2 |
||
2614 | push eax |
||
2615 | cmp edi, [ebp+NTFS.BitmapStart] |
||
2616 | jc .err1 |
||
2617 | call ntfsSpaceAlloc |
||
2618 | jc .err1 |
||
2619 | pop edi |
||
2620 | pop edx |
||
2621 | cmp edx, eax |
||
2622 | jnz .newEntry |
||
2623 | pop edx |
||
2624 | pop edi |
||
2625 | pop [ebp+NTFS.fileDataStart] |
||
2626 | mov [esp], eax |
||
2627 | push [ebp+NTFS.fileDataSize] |
||
2628 | add [ebp+NTFS.fileDataSize], edx |
||
2629 | jmp @f |
||
2630 | |||
2631 | .newEntry: |
||
2632 | add esp, 12 |
||
2633 | pop edx |
||
2634 | push eax |
||
2635 | push [ebp+NTFS.fileDataSize] |
||
2636 | sub eax, edx |
||
2637 | mov [ebp+NTFS.fileDataStart], eax |
||
2638 | @@: |
||
2639 | mov esi, [ebp+NTFS.ntfs_attr_offs] |
||
2640 | call createMcbEntry |
||
2641 | pop ecx |
||
2642 | pop eax |
||
2643 | jc .err2 |
||
2644 | mov byte [edi], 0 |
||
2645 | add ecx, eax |
||
2646 | add ecx, 4095 |
||
2647 | shr ecx, 3+9 |
||
2648 | shr eax, 3+9 |
||
2649 | sub ecx, eax |
||
2650 | mov ebx, eax |
||
2651 | shl ebx, 9 |
||
2652 | add eax, [ebp+NTFS.BitmapLocation] |
||
2653 | add ebx, [ebp+NTFS.BitmapBuffer] |
||
2654 | xor edx, edx |
||
2655 | call fs_write64_app |
||
2656 | test eax, eax |
||
2657 | jz .done |
||
2658 | movi eax, ERROR_DEVICE |
||
2659 | stc |
||
2660 | .done: |
||
2661 | ret |
||
2662 | |||
2663 | .err1: |
||
2664 | movi eax, ERROR_DISK_FULL |
||
2665 | add esp, 24 |
||
2666 | stc |
||
2667 | ret |
||
2668 | |||
2669 | .err2: |
||
2670 | movi eax, ERROR_UNSUPPORTED_FS |
||
2671 | ret |
||
2672 | |||
2673 | .shrinkAttribute: |
||
2674 | add ecx, edi |
||
2675 | inc ecx |
||
2676 | add esi, eax |
||
2677 | xor edi, edi |
||
2678 | sub esp, 20 |
||
2679 | @@: |
||
2680 | mov [esp+16], esi |
||
2681 | call ntfs_decode_mcb_entry |
||
2682 | jnc .err3 |
||
2683 | add edi, [esp+8] |
||
2684 | sub ecx, [esp] |
||
2685 | jnc @b |
||
2686 | mov ebx, ecx |
||
2687 | add ecx, [esp] |
||
2688 | mov eax, [esp+8] |
||
2689 | mov [ebp+NTFS.fileDataSize], ecx |
||
2690 | mov [ebp+NTFS.fileDataStart], eax |
||
2691 | push edi |
||
2692 | add edi, ecx |
||
2693 | neg ebx |
||
2694 | call ntfsSpaceFree |
||
2695 | pop edi |
||
2696 | jc .end |
||
2697 | @@: |
||
2698 | call ntfs_decode_mcb_entry |
||
2699 | jnc .end |
||
2700 | cmp dword[esp+8], 0 |
||
2701 | jz @b |
||
2702 | add edi, [esp+8] |
||
2703 | mov ebx, [esp] |
||
2704 | call ntfsSpaceFree |
||
2705 | jnc @b |
||
2706 | .end: |
||
2707 | add esp, 16 |
||
2708 | pop edi |
||
2709 | cmp [ebp+NTFS.fileDataSize], 0 |
||
2710 | jz @f |
||
2711 | mov esi, [ebp+NTFS.ntfs_attr_offs] |
||
2712 | call createMcbEntry |
||
2713 | @@: |
||
2714 | mov byte [edi], 0 |
||
2715 | ret |
||
2716 | |||
2717 | .err3: |
||
2718 | movi eax, ERROR_FS_FAIL |
||
2719 | add esp, 20 |
||
2720 | stc |
||
2721 | ret |
||
2722 | |||
2723 | ntfsSpaceAlloc: |
||
2724 | ; find and mark block of free space in bitmap buffer |
||
2725 | ; in: |
||
2726 | ; edi = offset in bitmap to start search from |
||
2727 | ; [ebp+NTFS.fileDataSize] = block size in clusters |
||
2728 | ; out: |
||
2729 | ; eax = allocated block starting cluster |
||
2730 | ; CF=1 -> disk full |
||
2731 | mov ecx, [ebp+NTFS.BitmapBuffer] |
||
2732 | add edi, ecx |
||
2733 | add ecx, [ebp+NTFS.BitmapSize] |
||
2734 | sub ecx, edi |
||
2735 | jnc @f |
||
2736 | call bitmapBuffering |
||
2737 | shl ecx, 2 |
||
2738 | @@: |
||
2739 | shr ecx, 2 |
||
2740 | mov eax, [ebp+NTFS.fileDataSize] |
||
2741 | shr eax, 5 |
||
2742 | jz .small |
||
2743 | push eax ; bitmap dwords |
||
2744 | .start: |
||
2745 | mov ecx, [ebp+NTFS.BitmapBuffer] |
||
2746 | add ecx, [ebp+NTFS.BitmapSize] |
||
2747 | sub ecx, edi |
||
2748 | shr ecx, 2 |
||
2749 | @@: |
||
2750 | xor eax, eax |
||
2751 | repnz scasd ; search for empty dword |
||
2752 | jz @f |
||
2753 | call bitmapBuffering |
||
2754 | jmp @b |
||
2755 | @@: |
||
2756 | cmp ecx, [esp] |
||
2757 | jnc @f |
||
2758 | call bitmapBuffering |
||
2759 | jmp @b |
||
2760 | @@: |
||
2761 | sub edi, 4 |
||
2762 | mov ecx, [esp] |
||
2763 | mov esi, edi |
||
2764 | xor eax, eax |
||
2765 | repz scasd ; check following dwords |
||
2766 | jnz .start |
||
2767 | sub esi, 4 |
||
2768 | mov eax, [esi] |
||
2769 | xor edx, edx |
||
2770 | bsr edx, eax |
||
2771 | inc edx |
||
2772 | push edx ; starting bit |
||
2773 | push esi ; starting dword |
||
2774 | add esi, 4 |
||
2775 | neg edx |
||
2776 | add edx, 32 |
||
2777 | mov eax, [ebp+NTFS.fileDataSize] |
||
2778 | sub eax, edx |
||
2779 | mov edx, eax |
||
2780 | shr eax, 5 |
||
2781 | shl eax, 2 |
||
2782 | add esi, eax |
||
2783 | mov eax, [esi] |
||
2784 | bsf ecx, eax ; check last dword |
||
2785 | jz .done |
||
2786 | and edx, 31 |
||
2787 | cmp ecx, edx |
||
2788 | jnc .done |
||
2789 | add esp, 8 |
||
2790 | jmp .start |
||
2791 | |||
2792 | .small: ; less than 32 clusters |
||
2793 | mov eax, -1 |
||
2794 | repz scasd ; search for zero bits |
||
2795 | push ecx |
||
2796 | test ecx, ecx |
||
2797 | jnz @f |
||
2798 | call bitmapBuffering |
||
2799 | pop eax |
||
2800 | jmp .small |
||
2801 | @@: |
||
2802 | sub edi, 4 |
||
2803 | mov eax, [edi] |
||
2804 | not eax |
||
2805 | @@: |
||
2806 | bsf ecx, eax ; first 0 |
||
2807 | jz .again |
||
2808 | not eax |
||
2809 | shr eax, cl |
||
2810 | shl eax, cl |
||
2811 | bsf edx, eax ; next 1 |
||
2812 | jz @f |
||
2813 | sub edx, ecx |
||
2814 | cmp edx, [ebp+NTFS.fileDataSize] |
||
2815 | jnc .got ; fits inside |
||
2816 | bsf ecx, eax |
||
2817 | not eax |
||
2818 | shr eax, cl |
||
2819 | shl eax, cl |
||
2820 | jmp @b |
||
2821 | @@: ; next dword |
||
2822 | mov eax, [edi+4] |
||
2823 | bsf edx, eax |
||
2824 | jz .got ; empty |
||
2825 | add edx, 32 |
||
2826 | sub edx, ecx |
||
2827 | cmp edx, [ebp+NTFS.fileDataSize] |
||
2828 | jnc .got ; share between dwords |
||
2829 | .again: |
||
2830 | add edi, 4 |
||
2831 | pop ecx |
||
2832 | jmp .small |
||
2833 | |||
2834 | .got: |
||
2835 | push ecx ; starting bit |
||
2836 | push edi ; starting dword |
||
2837 | .done: ; mark space |
||
2838 | mov ecx, [esp+4] |
||
2839 | cmp ecx, 32 |
||
2840 | jc @f |
||
2841 | xor ecx, ecx |
||
2842 | add dword [esp], 4 |
||
2843 | mov [esp+4], ecx |
||
2844 | @@: |
||
2845 | mov edi, [esp] |
||
2846 | xor eax, eax |
||
2847 | dec eax |
||
2848 | shr eax, cl |
||
2849 | shl eax, cl |
||
2850 | neg ecx |
||
2851 | add ecx, 32 |
||
2852 | sub ecx, [ebp+NTFS.fileDataSize] |
||
2853 | jc @f |
||
2854 | shl eax, cl ; fits inside dword |
||
2855 | shr eax, cl |
||
2856 | or [edi], eax |
||
2857 | jmp .end |
||
2858 | |||
2859 | @@: |
||
2860 | or [edi], eax |
||
2861 | neg ecx |
||
2862 | push ecx |
||
2863 | shr ecx, 5 |
||
2864 | add edi, 4 |
||
2865 | xor eax, eax |
||
2866 | dec eax |
||
2867 | rep stosd |
||
2868 | pop ecx |
||
2869 | and ecx, 31 |
||
2870 | shr eax, cl |
||
2871 | shl eax, cl |
||
2872 | not eax |
||
2873 | or [edi], eax |
||
2874 | .end: |
||
2875 | pop eax |
||
2876 | sub eax, [ebp+NTFS.BitmapBuffer] |
||
2877 | shl eax, 3 |
||
2878 | pop edx |
||
2879 | add eax, edx |
||
2880 | pop edx |
||
2881 | ret |
||
2882 | |||
2883 | ntfsSpaceFree: |
||
2884 | ; free disk space |
||
2885 | ; in: |
||
2886 | ; edi = starting cluster |
||
2887 | ; ebx = size in clusters |
||
2888 | mov eax, edi |
||
2889 | add eax, ebx |
||
2890 | shr eax, 3 |
||
2891 | inc eax |
||
2892 | cmp eax, [ebp+NTFS.BitmapSize] |
||
2893 | jc @f |
||
2894 | add eax, [ebp+NTFS.BitmapBuffer] |
||
2895 | push edi |
||
2896 | mov edi, eax |
||
2897 | call bitmapBuffering |
||
2898 | pop edi |
||
2899 | @@: |
||
2900 | push edi |
||
2901 | mov ecx, edi |
||
2902 | shr edi, 5 |
||
2903 | shl edi, 2 |
||
2904 | add edi, [ebp+NTFS.BitmapBuffer] |
||
2905 | and ecx, 31 |
||
2906 | xor eax, eax |
||
2907 | dec eax |
||
2908 | shr eax, cl |
||
2909 | shl eax, cl |
||
2910 | neg ecx |
||
2911 | add ecx, 32 |
||
2912 | sub ecx, ebx |
||
2913 | jc @f |
||
2914 | shl eax, cl ; fits inside dword |
||
2915 | shr eax, cl |
||
2916 | not eax |
||
2917 | and [edi], eax |
||
2918 | jmp .writeBitmap |
||
2919 | |||
2920 | @@: |
||
2921 | not eax |
||
2922 | and [edi], eax |
||
2923 | neg ecx |
||
2924 | push ecx |
||
2925 | shr ecx, 5 |
||
2926 | add edi, 4 |
||
2927 | xor eax, eax |
||
2928 | rep stosd |
||
2929 | pop ecx |
||
2930 | and ecx, 31 |
||
2931 | dec eax |
||
2932 | shr eax, cl |
||
2933 | shl eax, cl |
||
2934 | and [edi], eax |
||
2935 | .writeBitmap: |
||
2936 | pop eax |
||
2937 | mov edi, eax |
||
2938 | lea ecx, [eax+ebx+4095] |
||
2939 | shr eax, 3+9 |
||
2940 | shr ecx, 3+9 |
||
2941 | sub ecx, eax |
||
2942 | mov ebx, eax |
||
2943 | shl ebx, 9 |
||
2944 | add eax, [ebp+NTFS.BitmapLocation] |
||
2945 | add ebx, [ebp+NTFS.BitmapBuffer] |
||
2946 | xor edx, edx |
||
2947 | jmp fs_write64_app |
||
2948 | |||
5954 | pathoswith | 2949 | bitmapBuffering: |
2950 | ; Extend BitmapBuffer and read next 32kb of bitmap |
||
2951 | ; Warning: $Bitmap fragmentation is not foreseen |
||
6080 | pathoswith | 2952 | ; in: edi -> position in bitmap buffer |
2953 | ; out: ecx = number of buffered dwords left |
||
5954 | pathoswith | 2954 | push ebx |
2955 | mov eax, [ebp+NTFS.BitmapTotalSize] |
||
2956 | cmp eax, [ebp+NTFS.BitmapSize] |
||
2957 | jz .end |
||
2958 | stdcall alloc_pages, 8 |
||
2959 | test eax, eax |
||
2960 | jz .end |
||
2961 | add eax, 3 |
||
2962 | mov ebx, [ebp+NTFS.BitmapBuffer] |
||
2963 | add ebx, [ebp+NTFS.BitmapSize] |
||
2964 | push ebx |
||
2965 | mov ecx, 8 |
||
2966 | call commit_pages |
||
2967 | mov eax, [ebp+NTFS.BitmapSize] |
||
2968 | shr eax, 9 |
||
2969 | add eax, [ebp+NTFS.BitmapLocation] |
||
2970 | pop ebx |
||
2971 | mov ecx, 64 |
||
2972 | xor edx, edx |
||
2973 | call fs_read64_app |
||
2974 | test eax, eax |
||
2975 | jnz .err |
||
2976 | add [ebp+NTFS.BitmapSize], 8000h |
||
2977 | mov eax, [ebp+NTFS.BitmapTotalSize] |
||
2978 | cmp eax, [ebp+NTFS.BitmapSize] |
||
2979 | jnc @f |
||
2980 | mov [ebp+NTFS.BitmapSize], eax |
||
2981 | @@: |
||
6080 | pathoswith | 2982 | pop ebx |
2983 | mov ecx, [ebp+NTFS.BitmapBuffer] |
||
2984 | add ecx, [ebp+NTFS.BitmapSize] |
||
6019 | pathoswith | 2985 | sub ecx, edi |
6080 | pathoswith | 2986 | jc bitmapBuffering |
5954 | pathoswith | 2987 | shr ecx, 2 |
2988 | ret |
||
2989 | |||
2990 | .err: |
||
2991 | mov eax, [ebp+NTFS.BitmapBuffer] |
||
2992 | add eax, [ebp+NTFS.BitmapSize] |
||
2993 | mov ecx, 8 |
||
2994 | call release_pages |
||
2995 | .end: |
||
6080 | pathoswith | 2996 | pop ebx |
2997 | pop eax ; ret |
||
2998 | pop eax |
||
2999 | stc |
||
3000 | ret |
||
5954 | pathoswith | 3001 | |
2288 | clevermous | 3002 | ;---------------------------------------------------------------- |
5994 | pathoswith | 3003 | ntfs_WriteFile: |
3004 | cmp byte [esi], 0 |
||
3005 | jnz @f |
||
2288 | clevermous | 3006 | xor ebx, ebx |
5994 | pathoswith | 3007 | movi eax, ERROR_ACCESS_DENIED |
2288 | clevermous | 3008 | ret |
5994 | pathoswith | 3009 | @@: |
3010 | call ntfs_lock |
||
3011 | stdcall ntfs_find_lfn, [esp+4] |
||
6019 | pathoswith | 3012 | jc ntfsNotFound |
3013 | cmp [ebp+NTFS.ntfs_cur_iRecord], 16 |
||
3014 | jc ntfsDenied |
||
6080 | pathoswith | 3015 | bt dword [eax+fileFlags], 28 |
3016 | jc ntfsDenied |
||
3017 | mov ecx, eax |
||
3018 | mov eax, [ebx+4] |
||
3019 | mov edx, [ebx+8] |
||
3020 | add eax, [ebx+12] |
||
3021 | adc edx, 0 |
||
3022 | mov [ebp+NTFS.nodeLastRead], 0 |
||
3023 | cmp edx, [ecx+fileRealSize+4] |
||
3024 | jc .readAttribute |
||
3025 | jnz @f |
||
3026 | cmp [ecx+fileRealSize], eax |
||
3027 | jnc .readAttribute |
||
3028 | @@: ; set file size in the directory |
||
3029 | cmp [ebp+NTFS.ntfsFragmentCount], 1 |
||
3030 | jnz ntfsUnsupported ; record fragmented |
||
3031 | mov edi, [ebp+NTFS.cur_index_buf] |
||
3032 | cmp dword [edi], 'INDX' |
||
3033 | jz @f |
||
3034 | mov esi, [ebp+NTFS.frs_buffer] |
||
3035 | push ecx |
||
3036 | mov ecx, [esi+recordRealSize] |
||
3037 | shr ecx, 2 |
||
3038 | rep movsd |
||
3039 | mov esi, [ebp+NTFS.ntfs_attr_offs] |
||
3040 | mov cl, [esi+attributeOffset] |
||
3041 | sub esi, [ebp+NTFS.frs_buffer] |
||
3042 | add esi, ecx |
||
3043 | pop ecx |
||
3044 | add ecx, esi |
||
3045 | @@: |
||
3046 | mov [ecx+fileRealSize], eax |
||
3047 | mov [ecx+fileRealSize+4], edx |
||
3048 | mov ecx, [ebp+NTFS.ntfsLastRead] |
||
3049 | mov [ebp+NTFS.nodeLastRead], ecx |
||
3050 | .readAttribute: |
||
5994 | pathoswith | 3051 | mov [ebp+NTFS.ntfs_cur_attr], 0x80 |
3052 | mov [ebp+NTFS.ntfs_cur_offs], 0 |
||
3053 | mov [ebp+NTFS.ntfs_cur_size], 0 |
||
6080 | pathoswith | 3054 | push eax |
5994 | pathoswith | 3055 | call ntfs_read_attr |
6080 | pathoswith | 3056 | pop eax |
3057 | jc ntfsFail |
||
3058 | mov ecx, [ebp+NTFS.frs_buffer] |
||
3059 | cmp word [ecx+baseRecordReuse], 0 |
||
6019 | pathoswith | 3060 | jnz ntfsUnsupported ; auxiliary record |
6080 | pathoswith | 3061 | cmp byte [ecx+hardLinkCounter], 1 |
6019 | pathoswith | 3062 | jnz ntfsUnsupported ; file copying required |
5994 | pathoswith | 3063 | mov ecx, [ebp+NTFS.ntfs_attr_offs] |
3064 | cmp byte [ecx+nonResidentFlag], 1 |
||
6019 | pathoswith | 3065 | jnz ntfsUnsupported ; resident $DATA |
5994 | pathoswith | 3066 | cmp edx, [ecx+attributeRealSize+4] |
6080 | pathoswith | 3067 | jc .writeNode |
3068 | jnz .resizeAttribute |
||
5994 | pathoswith | 3069 | cmp [ecx+attributeRealSize], eax |
6080 | pathoswith | 3070 | jnc .writeNode |
3071 | .resizeAttribute: |
||
3072 | push ebx |
||
3073 | call resizeAttribute |
||
3074 | jc ntfsError |
||
3075 | mov eax, [ebp+NTFS.frs_buffer] |
||
3076 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
3077 | call writeRecord ; file |
||
3078 | mov ebx, [ebp+NTFS.frs_buffer] |
||
3079 | call ntfs_restore_usa_frs |
||
3080 | pop ebx |
||
3081 | .writeNode: |
||
3082 | mov eax, [ebp+NTFS.nodeLastRead] |
||
3083 | test eax, eax |
||
3084 | jz .writeData |
||
3085 | mov [ebp+NTFS.ntfsLastRead], eax |
||
3086 | mov eax, [ebp+NTFS.cur_index_buf] |
||
3087 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
3088 | push ebx |
||
3089 | call writeRecord ; directory |
||
3090 | pop ebx |
||
3091 | .writeData: |
||
5994 | pathoswith | 3092 | mov eax, [ebx+4] |
3093 | mov edx, [ebx+8] |
||
3094 | mov ecx, [ebx+12] |
||
3095 | mov esi, [ebx+16] |
||
3096 | shrd eax, edx, 9 |
||
3097 | test dword[ebx+4], 1FFh |
||
3098 | jz .aligned |
||
3099 | mov [ebp+NTFS.ntfs_cur_offs], eax |
||
3100 | mov [ebp+NTFS.ntfs_cur_size], 1 |
||
3101 | lea edi, [ebp+NTFS.ntfs_bitmap_buf] |
||
3102 | mov [ebp+NTFS.ntfs_cur_buf], edi |
||
3103 | call ntfs_read_attr.continue |
||
6019 | pathoswith | 3104 | jc ntfsDevice |
5994 | pathoswith | 3105 | mov eax, [ebx+4] |
3106 | and eax, 1FFh |
||
3107 | add edi, eax |
||
3108 | sub eax, [ebp+NTFS.ntfs_cur_read] |
||
3109 | neg eax |
||
3110 | push ecx |
||
3111 | cmp ecx, eax |
||
3112 | jb @f |
||
3113 | mov ecx, eax |
||
3114 | @@: |
||
3115 | sub [esp], ecx |
||
3116 | rep movsb |
||
3117 | push ebx |
||
3118 | mov eax, [ebp+NTFS.ntfsLastRead] |
||
3119 | lea ebx, [ebp+NTFS.ntfs_bitmap_buf] |
||
3120 | mov ecx, 1 |
||
3121 | xor edx, edx |
||
3122 | call fs_write64_app |
||
3123 | pop ebx |
||
3124 | pop ecx |
||
3125 | test ecx, ecx |
||
3126 | jz @f |
||
3127 | mov eax, [ebx+4] |
||
3128 | mov edx, [ebx+8] |
||
3129 | shrd eax, edx, 9 |
||
3130 | inc eax |
||
3131 | .aligned: |
||
3132 | push ecx |
||
3133 | shr ecx, 9 |
||
3134 | mov [ebp+NTFS.ntfs_cur_offs], eax |
||
3135 | mov [ebp+NTFS.ntfs_cur_size], ecx |
||
3136 | mov [ebp+NTFS.ntfs_cur_buf], esi |
||
3137 | add eax, ecx |
||
3138 | push eax |
||
3139 | mov [ebp+NTFS.ntfsWriteAttr], 1 |
||
3140 | call ntfs_read_attr.continue |
||
3141 | mov [ebp+NTFS.ntfsWriteAttr], 0 |
||
3142 | pop [ebp+NTFS.ntfs_cur_offs] |
||
3143 | pop ecx |
||
6019 | pathoswith | 3144 | jc ntfsDevice |
5994 | pathoswith | 3145 | and ecx, 1FFh |
3146 | jz @f |
||
3147 | add esi, [ebp+NTFS.ntfs_cur_read] |
||
3148 | mov [ebp+NTFS.ntfs_cur_size], 1 |
||
3149 | lea edi, [ebp+NTFS.ntfs_bitmap_buf] |
||
3150 | mov [ebp+NTFS.ntfs_cur_buf], edi |
||
3151 | call ntfs_read_attr.continue |
||
6019 | pathoswith | 3152 | jc ntfsDevice |
5994 | pathoswith | 3153 | rep movsb |
3154 | push ebx |
||
3155 | mov eax, [ebp+NTFS.ntfsLastRead] |
||
3156 | lea ebx, [ebp+NTFS.ntfs_bitmap_buf] |
||
3157 | mov ecx, 1 |
||
3158 | xor edx, edx |
||
3159 | call fs_write64_app |
||
3160 | pop ebx |
||
3161 | @@: |
||
3162 | mov ebx, [ebx+12] |
||
6019 | pathoswith | 3163 | jmp ntfsDone |
3164 | |||
3165 | ;---------------------------------------------------------------- |
||
3166 | ntfs_Delete: |
||
3167 | cmp byte [esi], 0 |
||
3168 | jnz @f |
||
3169 | xor ebx, ebx |
||
3170 | movi eax, ERROR_ACCESS_DENIED |
||
5994 | pathoswith | 3171 | ret |
6019 | pathoswith | 3172 | @@: |
3173 | call ntfs_lock |
||
3174 | stdcall ntfs_find_lfn, [esp+4] |
||
3175 | jc ntfsNotFound |
||
3176 | cmp [ebp+NTFS.ntfs_cur_iRecord], 16 |
||
3177 | jc ntfsDenied |
||
3178 | cmp [ebp+NTFS.ntfsFragmentCount], 1 |
||
3179 | jnz ntfsUnsupported ; record fragmented |
||
3180 | test byte [eax+indexFlags], 1 |
||
3181 | jnz ntfsUnsupported ; index has a subnode |
||
3182 | mov edx, [ebp+NTFS.ntfs_cur_iRecord] |
||
3183 | shr edx, 3 |
||
3184 | cmp edx, [ebp+NTFS.mftBitmapSize] |
||
3185 | jnc ntfsUnsupported |
||
3186 | ; delete index from the node |
||
3187 | movzx edx, word [eax+indexAllocatedSize] |
||
3188 | mov edi, [ebp+NTFS.cur_index_buf] |
||
3189 | cmp dword [edi], 'INDX' |
||
3190 | jz .indexRecord |
||
3191 | mov esi, [ebp+NTFS.frs_buffer] ; indexRoot |
||
3192 | mov ecx, [esi+recordRealSize] |
||
3193 | shr ecx, 2 |
||
3194 | rep movsd |
||
3195 | mov esi, [ebp+NTFS.cur_index_buf] |
||
3196 | mov edi, [ebp+NTFS.ntfs_attr_offs] |
||
3197 | sub edi, [ebp+NTFS.frs_buffer] |
||
3198 | add edi, esi |
||
3199 | sub [edi+sizeWithHeader], edx |
||
3200 | sub [edi+sizeWithoutHeader], edx |
||
3201 | mov cl, [edi+attributeOffset] |
||
3202 | add edi, ecx |
||
3203 | sub [edi+16+nodeRealSize], edx |
||
3204 | sub [edi+16+nodeAllocatedSize], edx |
||
3205 | sub eax, esi |
||
3206 | add eax, edi |
||
3207 | sub [esi+recordRealSize], edx |
||
3208 | mov ecx, [esi+recordRealSize] |
||
3209 | jmp @f |
||
2288 | clevermous | 3210 | |
6019 | pathoswith | 3211 | .indexRecord: |
3212 | sub [edi+28], edx |
||
3213 | mov ecx, [edi+28] |
||
3214 | add ecx, 24 |
||
3215 | @@: |
||
3216 | add ecx, [ebp+NTFS.cur_index_buf] |
||
3217 | sub ecx, eax |
||
3218 | shr ecx, 2 |
||
3219 | mov esi, eax |
||
3220 | add esi, edx |
||
3221 | mov edi, eax |
||
3222 | rep movsd |
||
3223 | mov eax, [ebp+NTFS.ntfsLastRead] |
||
3224 | mov [ebp+NTFS.nodeLastRead], eax |
||
3225 | ; examine file record |
||
3226 | mov [ebp+NTFS.ntfs_cur_attr], 0x80 |
||
3227 | mov [ebp+NTFS.ntfs_cur_offs], 0 |
||
3228 | mov [ebp+NTFS.ntfs_cur_size], 0 |
||
3229 | call ntfs_read_attr |
||
3230 | jc .folder |
||
3231 | mov esi, [ebp+NTFS.frs_buffer] |
||
3232 | cmp word [esi+baseRecordReuse], 0 |
||
3233 | jnz ntfsUnsupported ; auxiliary record |
||
3234 | cmp byte [esi+hardLinkCounter], 2 |
||
3235 | jnc .writeFileRecord ; delete hard link |
||
3236 | mov esi, [ebp+NTFS.ntfs_attr_offs] |
||
3237 | cmp byte [esi+nonResidentFlag], 0 |
||
3238 | jz .writeBitmapMFT |
||
3239 | movzx eax, byte [esi+dataRunsOffset] |
||
3240 | add esi, eax |
||
3241 | xor edi, edi |
||
3242 | sub esp, 16 |
||
6080 | pathoswith | 3243 | @@: ; "delete" file data |
6019 | pathoswith | 3244 | call ntfs_decode_mcb_entry |
6080 | pathoswith | 3245 | jnc @f |
6019 | pathoswith | 3246 | cmp dword[esp+8], 0 |
6080 | pathoswith | 3247 | jz @b |
6019 | pathoswith | 3248 | add edi, [esp+8] |
3249 | mov ebx, [esp] |
||
6080 | pathoswith | 3250 | call ntfsSpaceFree |
3251 | jnc @b |
||
6019 | pathoswith | 3252 | @@: |
3253 | add esp, 16 |
||
3254 | jmp .writeBitmapMFT |
||
3255 | |||
3256 | .folder: ; empty? |
||
3257 | lea esi, [ebp+NTFS.ntfs_bitmap_buf] |
||
3258 | mov [ebp+NTFS.ntfs_cur_buf], esi |
||
3259 | mov [ebp+NTFS.ntfs_cur_attr], 0x90 |
||
3260 | mov [ebp+NTFS.ntfs_cur_offs], 0 |
||
3261 | mov [ebp+NTFS.ntfs_cur_size], 1 |
||
3262 | call ntfs_read_attr |
||
3263 | cmp [ebp+NTFS.ntfs_cur_read], 48 |
||
3264 | jnz ntfsDenied |
||
3265 | test byte [esi+32+indexFlags], 1 |
||
3266 | jnz ntfsDenied |
||
3267 | .writeBitmapMFT: ; "delete" file record |
||
3268 | mov eax, [ebp+NTFS.ntfs_cur_iRecord] |
||
3269 | mov ecx, eax |
||
3270 | shr eax, 3 |
||
3271 | and ecx, 7 |
||
3272 | mov edi, [ebp+NTFS.mftBitmapBuffer] |
||
3273 | btr [edi+eax], ecx |
||
3274 | shr eax, 9 |
||
3275 | mov ebx, eax |
||
3276 | shl ebx, 9 |
||
3277 | add eax, [ebp+NTFS.mftBitmapLocation] |
||
3278 | add ebx, edi |
||
3279 | mov ecx, 1 |
||
3280 | xor edx, edx |
||
3281 | call fs_write64_sys |
||
3282 | mov esi, [ebp+NTFS.frs_buffer] |
||
3283 | mov byte [esi+recordFlags], 0 |
||
3284 | .writeFileRecord: |
||
3285 | dec byte [esi+hardLinkCounter] |
||
3286 | mov [ebp+NTFS.ntfs_cur_buf], esi |
||
3287 | call writeRecord |
||
3288 | ; write directory node |
||
3289 | mov eax, [ebp+NTFS.nodeLastRead] |
||
3290 | mov [ebp+NTFS.ntfsLastRead], eax |
||
3291 | mov eax, [ebp+NTFS.cur_index_buf] |
||
3292 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
3293 | call writeRecord |
||
6080 | pathoswith | 3294 | jmp ntfsDone |
6019 | pathoswith | 3295 | |
5954 | pathoswith | 3296 | ;---------------------------------------------------------------- |
3742 | clevermous | 3297 | ntfs_SetFileEnd: |
3298 | ntfs_SetFileInfo: |
||
6019 | pathoswith | 3299 | movi eax, ERROR_UNSUPPORTED_FS |
2288 | clevermous | 3300 | ret |
3301 | |||
3742 | clevermous | 3302 | ;---------------------------------------------------------------- |
3303 | ntfs_GetFileInfo: |
||
2288 | clevermous | 3304 | cmp byte [esi], 0 |
3305 | jnz @f |
||
5994 | pathoswith | 3306 | movi eax, ERROR_UNSUPPORTED_FS |
2288 | clevermous | 3307 | ret |
3308 | @@: |
||
3742 | clevermous | 3309 | call ntfs_lock |
3310 | stdcall ntfs_find_lfn, [esp+4] |
||
5994 | pathoswith | 3311 | jnc .found |
3742 | clevermous | 3312 | test eax, eax |
6019 | pathoswith | 3313 | jz ntfsFail |
3314 | jmp ntfsNotFound |
||
5994 | pathoswith | 3315 | .found: |
2288 | clevermous | 3316 | push esi edi |
3317 | mov esi, eax |
||
3742 | clevermous | 3318 | mov edi, [ebx+16] |
2288 | clevermous | 3319 | xor eax, eax |
3320 | call ntfs_direntry_to_bdfe |
||
3321 | pop edi esi |
||
3742 | clevermous | 3322 | call ntfs_unlock |
2288 | clevermous | 3323 | xor eax, eax |
3324 | ret |
||
3325 | |||
6019 | pathoswith | 3326 | ntfsUnsupported: |
3327 | push ERROR_UNSUPPORTED_FS |
||
6080 | pathoswith | 3328 | jmp ntfsOut |
6019 | pathoswith | 3329 | ntfsDevice: |
3330 | push ERROR_DEVICE |
||
3331 | jmp ntfsOut |
||
3332 | ntfsNotFound: |
||
3333 | push ERROR_FILE_NOT_FOUND |
||
3334 | jmp ntfsOut |
||
3335 | ntfsDenied: |
||
3336 | push ERROR_ACCESS_DENIED |
||
3337 | jmp ntfsOut |
||
3338 | ntfsFail: |
||
3339 | push ERROR_FS_FAIL |
||
3340 | jmp ntfsOut |
||
3341 | ntfsNoMemory: |
||
3342 | push ERROR_OUT_OF_MEMORY |
||
3343 | jmp ntfsOut |
||
6080 | pathoswith | 3344 | ntfsDiskFull: |
3345 | push ERROR_DISK_FULL |
||
3346 | jmp ntfsOut |
||
3347 | ntfsError: |
||
3348 | pop ebx |
||
3349 | push eax |
||
3350 | ntfsOut: |
||
3351 | call ntfs_unlock |
||
3352 | xor ebx, ebx |
||
3353 | pop eax |
||
3354 | ret>=>=> |