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Rev | Author | Line No. | Line |
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431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
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4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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7 | |||
593 | mikedld | 8 | $Revision: 864 $ |
9 | |||
10 | |||
864 | serge | 11 | ntfs_test_bootsec: |
256 | diamond | 12 | ; in: ebx->buffer, edx=size of partition |
13 | ; out: CF set <=> invalid |
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14 | ; 1. Name=='NTFS ' |
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15 | cmp dword [ebx+3], 'NTFS' |
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16 | jnz .no |
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17 | cmp dword [ebx+7], ' ' |
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18 | jnz .no |
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19 | ; 2. Number of bytes per sector is the same as for physical device |
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20 | ; (that is, 0x200 for hard disk) |
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21 | cmp word [ebx+11], 0x200 |
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22 | jnz .no |
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23 | ; 3. Number of sectors per cluster must be power of 2 |
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24 | movzx eax, byte [ebx+13] |
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25 | dec eax |
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26 | js .no |
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27 | test al, [ebx+13] |
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28 | jnz .no |
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29 | ; 4. FAT parameters must be zero |
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30 | cmp word [ebx+14], 0 |
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31 | jnz .no |
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32 | cmp dword [ebx+16], 0 |
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33 | jnz .no |
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34 | cmp byte [ebx+20], 0 |
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35 | jnz .no |
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36 | cmp word [ebx+22], 0 |
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37 | jnz .no |
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38 | cmp dword [ebx+32], 0 |
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39 | jnz .no |
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40 | ; 5. Number of sectors <= partition size |
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41 | cmp dword [ebx+0x2C], 0 |
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42 | ja .no |
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43 | cmp [ebx+0x28], edx |
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44 | ja .no |
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45 | ; 6. $MFT and $MFTMirr clusters must be within partition |
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46 | cmp dword [ebx+0x34], 0 |
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47 | ja .no |
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48 | push edx |
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49 | movzx eax, byte [ebx+13] |
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50 | mul dword [ebx+0x30] |
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51 | test edx, edx |
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52 | pop edx |
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53 | jnz .no |
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54 | cmp eax, edx |
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55 | ja .no |
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56 | cmp dword [ebx+0x3C], 0 |
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57 | ja .no |
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58 | push edx |
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59 | movzx eax, byte [ebx+13] |
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60 | mul dword [ebx+0x38] |
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61 | test edx, edx |
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62 | pop edx |
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63 | jnz .no |
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64 | cmp eax, edx |
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65 | ja .no |
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66 | ; 7. Clusters per FRS must be either negative and in [-31,-9] or positive and power of 2 |
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67 | movsx eax, byte [ebx+0x40] |
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68 | cmp al, -31 |
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69 | jl .no |
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70 | cmp al, -9 |
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71 | jle @f |
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72 | dec eax |
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73 | js .no |
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74 | test [ebx+0x40], al |
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75 | jnz .no |
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76 | @@: |
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77 | ; 8. Same for clusters per IndexAllocationBuffer |
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78 | movsx eax, byte [ebx+0x44] |
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79 | cmp al, -31 |
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80 | jl .no |
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81 | cmp al, -9 |
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82 | jle @f |
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83 | dec eax |
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84 | js .no |
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85 | test [ebx+0x44], al |
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86 | jnz .no |
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87 | @@: |
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88 | ; OK, this is correct NTFS bootsector |
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89 | clc |
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90 | ret |
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91 | .no: |
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92 | ; No, this bootsector isn't NTFS |
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93 | stc |
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94 | ret |
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95 | |||
96 | ntfs_setup: ; CODE XREF: part_set.inc |
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97 | ; By given bootsector, initialize some NTFS variables |
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98 | call ntfs_test_bootsec |
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99 | jc problem_fat_dec_count |
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100 | movzx eax, byte [ebx+13] |
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101 | mov [ntfs_data.sectors_per_cluster], eax |
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102 | mov eax, [ebx+0x28] |
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103 | add eax, [PARTITION_START] |
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104 | dec eax |
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105 | mov [PARTITION_END], eax |
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106 | mov [fs_type], 1 |
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107 | mov eax, [ebx+0x30] |
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108 | mov [ntfs_data.mft_cluster], eax |
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109 | mov eax, [ebx+0x38] |
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110 | mov [ntfs_data.mftmirr_cluster], eax |
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111 | movsx eax, byte [ebx+0x40] |
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112 | test eax, eax |
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113 | js .1 |
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114 | mul [ntfs_data.sectors_per_cluster] |
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115 | shl eax, 9 |
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116 | jmp .2 |
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117 | .1: |
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118 | neg eax |
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119 | mov ecx, eax |
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120 | mov eax, 1 |
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121 | shl eax, cl |
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122 | .2: |
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123 | mov [ntfs_data.frs_size], eax |
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124 | movsx eax, byte [ebx+0x44] |
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125 | test eax, eax |
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126 | js .3 |
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127 | mul [ntfs_data.sectors_per_cluster] |
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128 | shl eax, 9 |
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129 | jmp .4 |
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130 | .3: |
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131 | neg eax |
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132 | mov ecx, eax |
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133 | mov eax, 1 |
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134 | shl eax, cl |
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135 | .4: |
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864 | serge | 136 | mov ecx, [ntfs_data.frs_size] |
256 | diamond | 137 | mov [ntfs_data.iab_size], eax |
138 | ; allocate space for buffers |
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864 | serge | 139 | add ecx, eax |
140 | mov edx, PG_SW |
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141 | call @mem_alloc@8 |
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256 | diamond | 142 | test eax, eax |
864 | serge | 143 | mov [ntfs_data.frs_buffer], eax |
256 | diamond | 144 | jz problem_fat_dec_count |
145 | add eax, [ntfs_data.frs_size] |
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146 | mov [ntfs_data.iab_buffer], eax |
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147 | ; read $MFT disposition |
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148 | mov eax, [ntfs_data.mft_cluster] |
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149 | mul [ntfs_data.sectors_per_cluster] |
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150 | call ntfs_read_frs_sector |
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151 | cmp [hd_error], 0 |
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152 | jnz .usemirr |
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153 | cmp dword [ebx], 'FILE' |
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154 | jnz .usemirr |
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155 | call ntfs_restore_usa_frs |
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156 | jnc .mftok |
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157 | .usemirr: |
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158 | and [hd_error], 0 |
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159 | mov eax, [ntfs_data.mftmirr_cluster] |
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160 | mul [ntfs_data.sectors_per_cluster] |
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161 | call ntfs_read_frs_sector |
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162 | cmp [hd_error], 0 |
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163 | jnz @f |
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164 | cmp dword [ebx], 'FILE' |
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165 | jnz @f |
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166 | call ntfs_restore_usa_frs |
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167 | jnc .mftok |
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168 | @@: |
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169 | ; $MFT and $MFTMirr invalid! |
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170 | .fail_free_frs: |
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171 | push [ntfs_data.frs_buffer] |
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172 | call kernel_free |
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173 | jmp problem_fat_dec_count |
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174 | .fail_free_mft: |
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175 | push [ntfs_data.mft_retrieval] |
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176 | call kernel_free |
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177 | jmp .fail_free_frs |
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178 | .mftok: |
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179 | ; read $MFT table retrieval information |
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180 | ; start with one page, increase if not enough (when MFT too fragmented) |
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864 | serge | 181 | mov ecx, 0x1000 |
182 | mov edx, PG_SW |
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183 | call @mem_alloc@8 |
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256 | diamond | 184 | test eax, eax |
185 | jz .fail_free_frs |
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186 | mov [ntfs_data.mft_retrieval], eax |
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187 | and [ntfs_data.mft_retrieval_size], 0 |
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188 | mov [ntfs_data.mft_retrieval_alloc], 0x1000/8 |
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189 | ; $MFT base record must contain unnamed non-resident $DATA attribute |
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190 | movzx eax, word [ebx+14h] |
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191 | add eax, ebx |
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192 | .scandata: |
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193 | cmp dword [eax], -1 |
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194 | jz .fail_free_mft |
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195 | cmp dword [eax], 0x80 |
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196 | jnz @f |
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197 | cmp byte [eax+9], 0 |
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198 | jz .founddata |
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199 | @@: |
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200 | add eax, [eax+4] |
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201 | jmp .scandata |
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202 | .founddata: |
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203 | cmp byte [eax+8], 0 |
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204 | jz .fail_free_mft |
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205 | ; load first portion of $DATA attribute retrieval information |
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206 | mov edx, [eax+0x18] |
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207 | mov [ntfs_data.mft_retrieval_end], edx |
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208 | mov esi, eax |
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209 | movzx eax, word [eax+0x20] |
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210 | add esi, eax |
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211 | sub esp, 10h |
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212 | .scanmcb: |
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213 | call ntfs_decode_mcb_entry |
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214 | jnc .scanmcbend |
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215 | call .get_mft_retrieval_ptr |
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216 | mov edx, [esp] ; block length |
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217 | mov [eax], edx |
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218 | mov edx, [esp+8] ; block addr (relative) |
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219 | mov [eax+4], edx |
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220 | inc [ntfs_data.mft_retrieval_size] |
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221 | jmp .scanmcb |
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222 | .scanmcbend: |
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223 | add esp, 10h |
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224 | ; there may be other portions of $DATA attribute in auxiliary records; |
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225 | ; if they will be needed, they will be loaded later |
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226 | |||
227 | mov [ntfs_data.cur_index_size], 0x1000/0x200 |
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864 | serge | 228 | mov ecx, 0x1000 |
229 | mov edx, PG_SW |
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230 | call @mem_alloc@8 |
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256 | diamond | 231 | test eax, eax |
864 | serge | 232 | mov [ntfs_data.cur_index_buf], eax |
256 | diamond | 233 | jz .fail_free_mft |
234 | |||
235 | popad |
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321 | diamond | 236 | call free_hd_channel |
256 | diamond | 237 | and [hd1_status], 0 |
238 | ret |
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239 | |||
240 | .get_mft_retrieval_ptr: |
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241 | pushad |
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242 | mov eax, [ntfs_data.mft_retrieval_size] |
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243 | cmp eax, [ntfs_data.mft_retrieval_alloc] |
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244 | jnz .ok |
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864 | serge | 245 | |
246 | lea ecx, [eax+0x1000/8] |
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247 | mov [ntfs_data.mft_retrieval_alloc], ecx |
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248 | shl ecx, 3 |
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249 | mov edx, PG_SW |
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250 | call @mem_alloc@8 |
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256 | diamond | 251 | test eax, eax |
252 | jnz @f |
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253 | popad |
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254 | add esp, 14h |
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255 | jmp .fail_free_mft |
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256 | @@: |
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257 | mov esi, [ntfs_data.mft_retrieval] |
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258 | mov edi, eax |
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259 | mov ecx, [ntfs_data.mft_retrieval_size] |
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260 | add ecx, ecx |
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261 | rep movsd |
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262 | push [ntfs_data.mft_retrieval] |
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263 | mov [ntfs_data.mft_retrieval], eax |
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264 | call kernel_free |
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265 | mov eax, [ntfs_data.mft_retrieval_size] |
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266 | .ok: |
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267 | shl eax, 3 |
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268 | add eax, [ntfs_data.mft_retrieval] |
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269 | mov [esp+28], eax |
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270 | popad |
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271 | ret |
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272 | |||
273 | ntfs_read_frs_sector: |
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274 | push eax ecx |
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275 | add eax, [PARTITION_START] |
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276 | mov ecx, [ntfs_data.frs_size] |
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277 | shr ecx, 9 |
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278 | mov ebx, [ntfs_data.frs_buffer] |
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279 | push ebx |
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280 | @@: |
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281 | call hd_read |
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282 | cmp [hd_error], 0 |
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283 | jnz .fail |
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284 | add ebx, 0x200 |
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285 | inc eax |
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286 | loop @b |
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287 | .fail: |
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288 | pop ebx |
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289 | pop ecx eax |
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290 | ret |
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291 | |||
292 | uglobal |
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293 | align 4 |
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294 | ntfs_cur_attr dd ? |
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295 | ntfs_cur_iRecord dd ? |
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296 | ntfs_cur_offs dd ? ; in sectors |
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297 | ntfs_cur_size dd ? ; in sectors |
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298 | ntfs_cur_buf dd ? |
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299 | ntfs_cur_read dd ? ; [output] |
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265 | diamond | 300 | ntfs_bCanContinue db ? |
301 | rb 3 |
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256 | diamond | 302 | |
303 | ntfs_attrlist_buf rb 0x400 |
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273 | diamond | 304 | ntfs_attrlist_mft_buf rb 0x400 |
256 | diamond | 305 | ntfs_bitmap_buf rb 0x400 |
306 | |||
307 | ntfs_attr_iRecord dd ? |
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308 | ntfs_attr_iBaseRecord dd ? |
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309 | ntfs_attr_offs dd ? |
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310 | ntfs_attr_list dd ? |
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257 | diamond | 311 | ntfs_attr_size dq ? |
262 | diamond | 312 | ntfs_cur_tail dd ? |
256 | diamond | 313 | endg |
314 | |||
315 | ntfs_read_attr: |
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316 | ; in: global variables |
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317 | ; out: [ntfs_cur_read] |
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318 | pushad |
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319 | and [ntfs_cur_read], 0 |
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320 | cmp [ntfs_cur_iRecord], 0 |
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321 | jnz .nomft |
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322 | cmp [ntfs_cur_attr], 0x80 |
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323 | jnz .nomft |
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324 | mov eax, [ntfs_data.mft_retrieval_end] |
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325 | inc eax |
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326 | mul [ntfs_data.sectors_per_cluster] |
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327 | cmp eax, [ntfs_cur_offs] |
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328 | jbe .nomft |
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329 | ; precalculated part of $Mft $DATA |
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330 | mov esi, [ntfs_data.mft_retrieval] |
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331 | mov eax, [ntfs_cur_offs] |
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332 | xor edx, edx |
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333 | div [ntfs_data.sectors_per_cluster] |
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334 | ; eax = VCN, edx = offset in sectors from beginning of cluster |
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335 | xor ecx, ecx ; ecx will contain LCN |
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336 | .mftscan: |
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337 | add ecx, [esi+4] |
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338 | sub eax, [esi] |
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339 | jb @f |
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340 | add esi, 8 |
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341 | push eax |
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342 | mov eax, [ntfs_data.mft_retrieval_end] |
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343 | shl eax, 3 |
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344 | add eax, [ntfs_data.mft_retrieval] |
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345 | cmp eax, esi |
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346 | pop eax |
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347 | jnz .mftscan |
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348 | jmp .nomft |
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349 | @@: |
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350 | push ecx |
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351 | add ecx, eax |
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352 | add ecx, [esi] |
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353 | push eax |
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354 | push edx |
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355 | mov eax, [ntfs_data.sectors_per_cluster] |
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356 | mul ecx |
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357 | ; eax = sector on partition |
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358 | add eax, [PARTITION_START] |
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359 | pop edx |
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360 | add eax, edx |
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361 | mov ebx, [ntfs_cur_buf] |
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362 | pop ecx |
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363 | neg ecx |
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364 | imul ecx, [ntfs_data.sectors_per_cluster] |
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365 | sub ecx, edx |
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366 | cmp ecx, [ntfs_cur_size] |
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367 | jb @f |
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368 | mov ecx, [ntfs_cur_size] |
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369 | @@: |
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370 | ; ecx = number of sequential sectors to read |
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371 | call hd_read |
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372 | cmp [hd_error], 0 |
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373 | jnz .errread |
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374 | add [ntfs_cur_read], 0x200 |
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375 | dec [ntfs_cur_size] |
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376 | inc [ntfs_cur_offs] |
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377 | add ebx, 0x200 |
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378 | mov [ntfs_cur_buf], ebx |
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379 | inc eax |
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380 | loop @b |
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381 | pop ecx |
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382 | xor eax, eax |
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383 | xor edx, edx |
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384 | cmp [ntfs_cur_size], eax |
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385 | jz @f |
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386 | add esi, 8 |
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387 | push eax |
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388 | mov eax, [ntfs_data.mft_retrieval_end] |
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389 | shl eax, 3 |
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390 | add eax, [ntfs_data.mft_retrieval] |
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391 | cmp eax, esi |
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392 | pop eax |
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393 | jz .nomft |
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394 | jmp .mftscan |
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395 | @@: |
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396 | popad |
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397 | ret |
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398 | .errread: |
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399 | pop ecx |
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400 | .errret: |
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401 | stc |
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402 | popad |
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403 | ret |
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404 | .nomft: |
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405 | ; 1. Read file record. |
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406 | ; N.B. This will do recursive call of read_attr for $MFT::$Data. |
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407 | mov eax, [ntfs_cur_iRecord] |
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408 | mov [ntfs_attr_iRecord], eax |
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409 | and [ntfs_attr_list], 0 |
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257 | diamond | 410 | or dword [ntfs_attr_size], -1 |
411 | or dword [ntfs_attr_size+4], -1 |
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256 | diamond | 412 | or [ntfs_attr_iBaseRecord], -1 |
413 | call ntfs_read_file_record |
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414 | test eax, eax |
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415 | jz .errret |
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416 | ; 2. Find required attribute. |
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417 | mov eax, [ntfs_data.frs_buffer] |
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418 | ; a) For auxiliary records, read base record |
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419 | ; N.B. If base record is present, |
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420 | ; base iRecord may be 0 (for $Mft), but SequenceNumber is nonzero |
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421 | cmp dword [eax+24h], 0 |
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422 | jz @f |
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423 | mov eax, [eax+20h] |
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424 | ; test eax, eax |
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425 | ; jz @f |
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426 | .beginfindattr: |
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427 | mov [ntfs_attr_iRecord], eax |
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428 | call ntfs_read_file_record |
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429 | test eax, eax |
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430 | jz .errret |
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431 | @@: |
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432 | ; b) Scan for required attribute and for $ATTR_LIST |
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433 | mov eax, [ntfs_data.frs_buffer] |
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434 | movzx ecx, word [eax+14h] |
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435 | add eax, ecx |
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436 | mov ecx, [ntfs_cur_attr] |
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437 | and [ntfs_attr_offs], 0 |
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438 | .scanattr: |
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439 | cmp dword [eax], -1 |
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440 | jz .scandone |
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441 | cmp dword [eax], ecx |
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442 | jz .okattr |
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443 | cmp [ntfs_attr_iBaseRecord], -1 |
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444 | jnz .scancont |
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445 | cmp dword [eax], 0x20 ; $ATTR_LIST |
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446 | jnz .scancont |
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447 | mov [ntfs_attr_list], eax |
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448 | jmp .scancont |
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449 | .okattr: |
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273 | diamond | 450 | ; ignore named $DATA attributes (aka NTFS streams) |
451 | cmp ecx, 0x80 |
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452 | jnz @f |
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453 | cmp byte [eax+9], 0 |
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454 | jnz .scancont |
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455 | @@: |
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256 | diamond | 456 | mov [ntfs_attr_offs], eax |
457 | .scancont: |
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458 | add eax, [eax+4] |
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459 | jmp .scanattr |
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262 | diamond | 460 | .continue: |
461 | pushad |
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462 | and [ntfs_cur_read], 0 |
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256 | diamond | 463 | .scandone: |
464 | ; c) Check for required offset and length |
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465 | mov ecx, [ntfs_attr_offs] |
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466 | jecxz .noattr |
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265 | diamond | 467 | push [ntfs_cur_size] |
468 | push [ntfs_cur_read] |
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256 | diamond | 469 | call .doreadattr |
265 | diamond | 470 | pop edx |
471 | pop eax |
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256 | diamond | 472 | jc @f |
265 | diamond | 473 | cmp [ntfs_bCanContinue], 0 |
474 | jz @f |
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475 | sub edx, [ntfs_cur_read] |
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476 | neg edx |
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477 | shr edx, 9 |
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478 | sub eax, edx |
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479 | mov [ntfs_cur_size], eax |
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256 | diamond | 480 | jnz .not_in_cur |
481 | @@: |
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482 | popad |
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483 | ret |
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484 | .noattr: |
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485 | .not_in_cur: |
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486 | cmp [ntfs_cur_attr], 0x20 |
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487 | jz @f |
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488 | mov ecx, [ntfs_attr_list] |
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489 | test ecx, ecx |
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490 | jnz .lookattr |
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491 | .ret_is_attr: |
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492 | cmp [ntfs_attr_offs], 1 ; CF set <=> ntfs_attr_offs == 0 |
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493 | popad |
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494 | ret |
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495 | .lookattr: |
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496 | ; required attribute or required offset was not found in base record; |
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497 | ; it may be present in auxiliary records; |
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498 | ; scan $ATTR_LIST |
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499 | mov eax, [ntfs_attr_iBaseRecord] |
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500 | cmp eax, -1 |
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501 | jz @f |
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502 | call ntfs_read_file_record |
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503 | test eax, eax |
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504 | jz .errret |
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505 | or [ntfs_attr_iBaseRecord], -1 |
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506 | @@: |
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507 | push [ntfs_cur_offs] |
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508 | push [ntfs_cur_size] |
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509 | push [ntfs_cur_read] |
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510 | push [ntfs_cur_buf] |
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257 | diamond | 511 | push dword [ntfs_attr_size] |
512 | push dword [ntfs_attr_size+4] |
||
513 | or dword [ntfs_attr_size], -1 |
||
514 | or dword [ntfs_attr_size+4], -1 |
||
273 | diamond | 515 | and [ntfs_cur_offs], 0 |
256 | diamond | 516 | mov [ntfs_cur_size], 2 |
517 | and [ntfs_cur_read], 0 |
||
273 | diamond | 518 | mov eax, ntfs_attrlist_buf |
519 | cmp [ntfs_cur_iRecord], 0 |
||
520 | jnz @f |
||
521 | mov eax, ntfs_attrlist_mft_buf |
||
522 | @@: |
||
523 | mov [ntfs_cur_buf], eax |
||
524 | push eax |
||
256 | diamond | 525 | call .doreadattr |
273 | diamond | 526 | pop esi |
527 | mov edx, 1 |
||
257 | diamond | 528 | pop dword [ntfs_attr_size+4] |
529 | pop dword [ntfs_attr_size] |
||
256 | diamond | 530 | mov ebp, [ntfs_cur_read] |
531 | pop [ntfs_cur_buf] |
||
532 | pop [ntfs_cur_read] |
||
533 | pop [ntfs_cur_size] |
||
534 | pop [ntfs_cur_offs] |
||
535 | jc .errret |
||
536 | or edi, -1 |
||
273 | diamond | 537 | lea ebp, [ebp+esi-1Ah] |
256 | diamond | 538 | .scanliststart: |
539 | mov eax, [ntfs_cur_attr] |
||
540 | .scanlist: |
||
541 | cmp esi, ebp |
||
542 | jae .scanlistdone |
||
543 | cmp eax, [esi] |
||
544 | jz @f |
||
545 | .scanlistcont: |
||
546 | movzx ecx, word [esi+4] |
||
547 | add esi, ecx |
||
548 | jmp .scanlist |
||
549 | @@: |
||
273 | diamond | 550 | ; ignore named $DATA attributes (aka NTFS streams) |
551 | cmp eax, 0x80 |
||
552 | jnz @f |
||
553 | cmp byte [esi+6], 0 |
||
554 | jnz .scanlistcont |
||
555 | @@: |
||
256 | diamond | 556 | push eax |
557 | mov eax, [esi+8] |
||
257 | diamond | 558 | test eax, eax |
559 | jnz .testf |
||
560 | mov eax, dword [ntfs_attr_size] |
||
561 | and eax, dword [ntfs_attr_size+4] |
||
562 | cmp eax, -1 |
||
563 | jnz .testfz |
||
564 | ; if attribute is in auxiliary records, its size is defined only in first |
||
565 | mov eax, [esi+10h] |
||
566 | call ntfs_read_file_record |
||
567 | test eax, eax |
||
568 | jnz @f |
||
569 | .errret_pop: |
||
570 | pop eax |
||
571 | jmp .errret |
||
572 | @@: |
||
573 | mov eax, [ntfs_data.frs_buffer] |
||
574 | movzx ecx, word [eax+14h] |
||
575 | add eax, ecx |
||
576 | mov ecx, [ntfs_cur_attr] |
||
577 | @@: |
||
578 | cmp dword [eax], -1 |
||
579 | jz .errret_pop |
||
580 | cmp dword [eax], ecx |
||
581 | jz @f |
||
273 | diamond | 582 | .l1: |
257 | diamond | 583 | add eax, [eax+4] |
584 | jmp @b |
||
585 | @@: |
||
273 | diamond | 586 | cmp eax, 0x80 |
587 | jnz @f |
||
588 | cmp byte [eax+9], 0 |
||
589 | jnz .l1 |
||
590 | @@: |
||
257 | diamond | 591 | cmp byte [eax+8], 0 |
592 | jnz .sdnores |
||
593 | mov eax, [eax+10h] |
||
594 | mov dword [ntfs_attr_size], eax |
||
595 | and dword [ntfs_attr_size+4], 0 |
||
596 | jmp .testfz |
||
597 | .sdnores: |
||
598 | mov ecx, [eax+30h] |
||
599 | mov dword [ntfs_attr_size], ecx |
||
600 | mov ecx, [eax+34h] |
||
601 | mov dword [ntfs_attr_size+4], ecx |
||
602 | .testfz: |
||
603 | xor eax, eax |
||
604 | .testf: |
||
256 | diamond | 605 | imul eax, [ntfs_data.sectors_per_cluster] |
606 | cmp eax, [ntfs_cur_offs] |
||
607 | pop eax |
||
608 | ja @f |
||
609 | mov edi, [esi+10h] ; keep previous iRecord |
||
610 | jmp .scanlistcont |
||
611 | @@: |
||
257 | diamond | 612 | .scanlistfound: |
256 | diamond | 613 | cmp edi, -1 |
614 | jnz @f |
||
615 | popad |
||
616 | ret |
||
617 | @@: |
||
618 | mov eax, [ntfs_cur_iRecord] |
||
619 | mov [ntfs_attr_iBaseRecord], eax |
||
620 | mov eax, edi |
||
621 | jmp .beginfindattr |
||
257 | diamond | 622 | .sde: |
623 | popad |
||
624 | stc |
||
625 | ret |
||
256 | diamond | 626 | .scanlistdone: |
627 | sub ebp, ntfs_attrlist_buf-1Ah |
||
273 | diamond | 628 | cmp [ntfs_cur_iRecord], 0 |
256 | diamond | 629 | jnz @f |
273 | diamond | 630 | sub ebp, ntfs_attrlist_mft_buf-ntfs_attrlist_buf |
631 | @@: |
||
256 | diamond | 632 | cmp ebp, 0x400 |
257 | diamond | 633 | jnz .scanlistfound |
256 | diamond | 634 | inc edx |
635 | push esi edi |
||
636 | mov esi, ntfs_attrlist_buf+0x200 |
||
637 | mov edi, ntfs_attrlist_buf |
||
273 | diamond | 638 | cmp [ntfs_cur_iRecord], 0 |
639 | jnz @f |
||
640 | mov esi, ntfs_attrlist_mft_buf+0x200 |
||
641 | mov edi, ntfs_attrlist_mft_buf |
||
642 | @@: |
||
256 | diamond | 643 | mov ecx, 0x200/4 |
644 | rep movsd |
||
273 | diamond | 645 | mov eax, edi |
256 | diamond | 646 | pop edi esi |
647 | sub esi, 0x200 |
||
648 | push [ntfs_cur_offs] |
||
649 | push [ntfs_cur_size] |
||
650 | push [ntfs_cur_read] |
||
651 | push [ntfs_cur_buf] |
||
273 | diamond | 652 | push dword [ntfs_attr_size] |
653 | push dword [ntfs_attr_size+4] |
||
654 | or dword [ntfs_attr_size], -1 |
||
655 | or dword [ntfs_attr_size+4], -1 |
||
256 | diamond | 656 | mov [ntfs_cur_offs], edx |
657 | mov [ntfs_cur_size], 1 |
||
658 | and [ntfs_cur_read], 0 |
||
273 | diamond | 659 | mov [ntfs_cur_buf], eax |
660 | mov ecx, [ntfs_attr_list] |
||
256 | diamond | 661 | push esi edx |
662 | call .doreadattr |
||
663 | pop edx esi |
||
664 | mov ebp, [ntfs_cur_read] |
||
273 | diamond | 665 | pop dword [ntfs_attr_size+4] |
666 | pop dword [ntfs_attr_size] |
||
256 | diamond | 667 | pop [ntfs_cur_buf] |
668 | pop [ntfs_cur_read] |
||
669 | pop [ntfs_cur_size] |
||
670 | pop [ntfs_cur_offs] |
||
671 | jc .errret |
||
273 | diamond | 672 | add ebp, ntfs_attrlist_buf+0x200-0x1A |
673 | cmp [ntfs_cur_iRecord], 0 |
||
674 | jnz .scanliststart |
||
675 | add ebp, ntfs_attrlist_mft_buf-ntfs_attrlist_buf |
||
256 | diamond | 676 | jmp .scanliststart |
677 | |||
678 | .doreadattr: |
||
265 | diamond | 679 | mov [ntfs_bCanContinue], 0 |
256 | diamond | 680 | cmp byte [ecx+8], 0 |
681 | jnz .nonresident |
||
682 | mov eax, [ecx+10h] ; length |
||
683 | mov esi, eax |
||
684 | mov edx, [ntfs_cur_offs] |
||
685 | shr eax, 9 |
||
686 | cmp eax, edx |
||
687 | jb .okret |
||
688 | shl edx, 9 |
||
689 | sub esi, edx |
||
690 | movzx eax, word [ecx+14h] |
||
691 | add edx, eax |
||
692 | add edx, ecx ; edx -> data |
||
693 | mov eax, [ntfs_cur_size] |
||
694 | cmp eax, (0xFFFFFFFF shr 9)+1 |
||
695 | jbe @f |
||
696 | mov eax, (0xFFFFFFFF shr 9)+1 |
||
697 | @@: |
||
698 | shl eax, 9 |
||
699 | cmp eax, esi |
||
700 | jbe @f |
||
701 | mov eax, esi |
||
702 | @@: |
||
703 | ; eax = length, edx -> data |
||
704 | mov [ntfs_cur_read], eax |
||
705 | mov ecx, eax |
||
706 | mov eax, edx |
||
707 | mov ebx, [ntfs_cur_buf] |
||
708 | call memmove |
||
257 | diamond | 709 | and [ntfs_cur_size], 0 ; CF=0 |
256 | diamond | 710 | ret |
711 | .nonresident: |
||
257 | diamond | 712 | ; Not all auxiliary records contain correct FileSize info |
713 | mov eax, dword [ntfs_attr_size] |
||
714 | mov edx, dword [ntfs_attr_size+4] |
||
715 | push eax |
||
716 | and eax, edx |
||
717 | cmp eax, -1 |
||
718 | pop eax |
||
719 | jnz @f |
||
256 | diamond | 720 | mov eax, [ecx+30h] ; FileSize |
721 | mov edx, [ecx+34h] |
||
257 | diamond | 722 | mov dword [ntfs_attr_size], eax |
723 | mov dword [ntfs_attr_size+4], edx |
||
724 | @@: |
||
256 | diamond | 725 | add eax, 0x1FF |
726 | adc edx, 0 |
||
727 | shrd eax, edx, 9 |
||
728 | sub eax, [ntfs_cur_offs] |
||
729 | ja @f |
||
730 | ; return with nothing read |
||
257 | diamond | 731 | and [ntfs_cur_size], 0 |
256 | diamond | 732 | .okret: |
733 | clc |
||
734 | ret |
||
735 | @@: |
||
736 | ; reduce read length |
||
262 | diamond | 737 | and [ntfs_cur_tail], 0 |
256 | diamond | 738 | cmp [ntfs_cur_size], eax |
739 | jb @f |
||
740 | mov [ntfs_cur_size], eax |
||
262 | diamond | 741 | mov eax, dword [ntfs_attr_size] |
742 | and eax, 0x1FF |
||
743 | mov [ntfs_cur_tail], eax |
||
256 | diamond | 744 | @@: |
745 | cmp [ntfs_cur_size], 0 |
||
746 | jz .okret |
||
747 | mov eax, [ntfs_cur_offs] |
||
748 | xor edx, edx |
||
749 | div [ntfs_data.sectors_per_cluster] |
||
750 | sub eax, [ecx+10h] ; first_vbo |
||
751 | jb .okret |
||
752 | ; eax = cluster, edx = starting sector |
||
753 | sub esp, 10h |
||
754 | movzx esi, word [ecx+20h] ; mcb_info_ofs |
||
755 | add esi, ecx |
||
756 | xor ebp, ebp |
||
757 | .readloop: |
||
758 | call ntfs_decode_mcb_entry |
||
759 | jnc .break |
||
760 | add ebp, [esp+8] |
||
761 | sub eax, [esp] |
||
762 | jae .readloop |
||
763 | push ecx |
||
764 | push eax |
||
765 | add eax, [esp+8] |
||
766 | add eax, ebp |
||
767 | imul eax, [ntfs_data.sectors_per_cluster] |
||
768 | add eax, edx |
||
769 | add eax, [PARTITION_START] |
||
770 | pop ecx |
||
771 | neg ecx |
||
772 | imul ecx, [ntfs_data.sectors_per_cluster] |
||
773 | sub ecx, edx |
||
774 | cmp ecx, [ntfs_cur_size] |
||
775 | jb @f |
||
776 | mov ecx, [ntfs_cur_size] |
||
777 | @@: |
||
778 | mov ebx, [ntfs_cur_buf] |
||
779 | @@: |
||
780 | call hd_read |
||
781 | cmp [hd_error], 0 |
||
782 | jnz .errread2 |
||
783 | add ebx, 0x200 |
||
784 | mov [ntfs_cur_buf], ebx |
||
785 | inc eax |
||
786 | add [ntfs_cur_read], 0x200 |
||
787 | dec [ntfs_cur_size] |
||
788 | inc [ntfs_cur_offs] |
||
789 | loop @b |
||
790 | pop ecx |
||
265 | diamond | 791 | xor eax, eax |
792 | xor edx, edx |
||
256 | diamond | 793 | cmp [ntfs_cur_size], 0 |
794 | jnz .readloop |
||
795 | add esp, 10h |
||
262 | diamond | 796 | mov eax, [ntfs_cur_tail] |
797 | test eax, eax |
||
820 | diamond | 798 | jz @f |
262 | diamond | 799 | sub eax, 0x200 |
800 | add [ntfs_cur_read], eax |
||
820 | diamond | 801 | @@: |
802 | clc |
||
803 | ret |
||
256 | diamond | 804 | .errread2: |
805 | pop ecx |
||
806 | add esp, 10h |
||
820 | diamond | 807 | stc |
808 | ret |
||
256 | diamond | 809 | .break: |
810 | add esp, 10h ; CF=0 |
||
265 | diamond | 811 | mov [ntfs_bCanContinue], 1 |
256 | diamond | 812 | ret |
813 | |||
814 | ntfs_read_file_record: |
||
815 | ; in: eax=iRecord |
||
816 | ; out: [ntfs_data.frs_buffer] contains information |
||
817 | ; eax=0 - failed, eax=1 - success |
||
818 | ; Read attr $DATA of $Mft, starting from eax*[ntfs_data.frs_size] |
||
819 | push ecx edx |
||
820 | mov ecx, [ntfs_data.frs_size] |
||
821 | mul ecx |
||
822 | shrd eax, edx, 9 |
||
823 | shr edx, 9 |
||
824 | jnz .err |
||
265 | diamond | 825 | push [ntfs_attr_iRecord] |
826 | push [ntfs_attr_iBaseRecord] |
||
827 | push [ntfs_attr_offs] |
||
828 | push [ntfs_attr_list] |
||
829 | push dword [ntfs_attr_size+4] |
||
830 | push dword [ntfs_attr_size] |
||
256 | diamond | 831 | push [ntfs_cur_iRecord] |
832 | push [ntfs_cur_attr] |
||
833 | push [ntfs_cur_offs] |
||
834 | push [ntfs_cur_size] |
||
835 | push [ntfs_cur_buf] |
||
836 | push [ntfs_cur_read] |
||
837 | mov [ntfs_cur_attr], 0x80 ; $DATA |
||
838 | and [ntfs_cur_iRecord], 0 ; $Mft |
||
839 | mov [ntfs_cur_offs], eax |
||
840 | shr ecx, 9 |
||
841 | mov [ntfs_cur_size], ecx |
||
842 | mov eax, [ntfs_data.frs_buffer] |
||
843 | mov [ntfs_cur_buf], eax |
||
844 | call ntfs_read_attr |
||
845 | mov eax, [ntfs_cur_read] |
||
846 | pop [ntfs_cur_read] |
||
847 | pop [ntfs_cur_buf] |
||
848 | pop [ntfs_cur_size] |
||
849 | pop [ntfs_cur_offs] |
||
850 | pop [ntfs_cur_attr] |
||
851 | pop [ntfs_cur_iRecord] |
||
265 | diamond | 852 | pop dword [ntfs_attr_size] |
853 | pop dword [ntfs_attr_size+4] |
||
854 | pop [ntfs_attr_list] |
||
855 | pop [ntfs_attr_offs] |
||
856 | pop [ntfs_attr_iBaseRecord] |
||
857 | pop [ntfs_attr_iRecord] |
||
256 | diamond | 858 | pop edx ecx |
859 | jc .errret |
||
860 | cmp eax, [ntfs_data.frs_size] |
||
861 | jnz .errret |
||
862 | mov eax, [ntfs_data.frs_buffer] |
||
863 | cmp dword [eax], 'FILE' |
||
864 | jnz .errret |
||
865 | push ebx |
||
866 | mov ebx, eax |
||
867 | call ntfs_restore_usa_frs |
||
868 | pop ebx |
||
869 | setnc al |
||
870 | movzx eax, al |
||
871 | .ret: |
||
872 | ret |
||
873 | .err: |
||
874 | pop edx ecx |
||
875 | .errret: |
||
876 | xor eax, eax |
||
877 | ret |
||
878 | |||
879 | ntfs_restore_usa_frs: |
||
880 | mov eax, [ntfs_data.frs_size] |
||
881 | ntfs_restore_usa: |
||
882 | pushad |
||
883 | shr eax, 9 |
||
884 | mov ecx, eax |
||
885 | inc eax |
||
886 | cmp [ebx+6], ax |
||
887 | jnz .err |
||
888 | movzx eax, word [ebx+4] |
||
889 | lea esi, [eax+ebx] |
||
890 | lodsw |
||
891 | mov edx, eax |
||
892 | lea edi, [ebx+0x1FE] |
||
893 | @@: |
||
894 | cmp [edi], dx |
||
895 | jnz .err |
||
896 | lodsw |
||
897 | stosw |
||
898 | add edi, 0x1FE |
||
899 | loop @b |
||
900 | popad |
||
901 | clc |
||
902 | ret |
||
903 | .err: |
||
904 | popad |
||
905 | stc |
||
906 | ret |
||
907 | |||
908 | ntfs_decode_mcb_entry: |
||
909 | push eax ecx edi |
||
910 | lea edi, [esp+16] |
||
911 | xor eax, eax |
||
912 | lodsb |
||
913 | test al, al |
||
914 | jz .end |
||
915 | mov ecx, eax |
||
916 | and ecx, 0xF |
||
917 | cmp ecx, 8 |
||
918 | ja .end |
||
919 | push ecx |
||
920 | rep movsb |
||
921 | pop ecx |
||
922 | sub ecx, 8 |
||
923 | neg ecx |
||
924 | cmp byte [esi-1], 80h |
||
925 | jae .end |
||
926 | push eax |
||
927 | xor eax, eax |
||
928 | rep stosb |
||
929 | pop ecx |
||
930 | shr ecx, 4 |
||
931 | cmp ecx, 8 |
||
932 | ja .end |
||
933 | push ecx |
||
934 | rep movsb |
||
935 | pop ecx |
||
936 | sub ecx, 8 |
||
937 | neg ecx |
||
938 | cmp byte [esi-1], 80h |
||
257 | diamond | 939 | cmc |
256 | diamond | 940 | sbb eax, eax |
941 | rep stosb |
||
942 | stc |
||
943 | .end: |
||
944 | pop edi ecx eax |
||
945 | ret |
||
946 | |||
257 | diamond | 947 | ntfs_find_lfn: |
521 | diamond | 948 | ; in: esi+ebp -> name |
257 | diamond | 949 | ; out: CF=1 - file not found |
262 | diamond | 950 | ; else CF=0, [ntfs_cur_iRecord] valid, eax->record in parent directory |
257 | diamond | 951 | mov [ntfs_cur_iRecord], 5 ; start parse from root cluster |
952 | .doit2: |
||
953 | mov [ntfs_cur_attr], 0x90 ; $INDEX_ROOT |
||
954 | and [ntfs_cur_offs], 0 |
||
955 | mov eax, [ntfs_data.cur_index_size] |
||
956 | mov [ntfs_cur_size], eax |
||
957 | mov eax, [ntfs_data.cur_index_buf] |
||
958 | mov [ntfs_cur_buf], eax |
||
959 | call ntfs_read_attr |
||
960 | jnc @f |
||
961 | .ret: |
||
962 | ret |
||
963 | @@: |
||
964 | cmp [ntfs_cur_read], 0x20 |
||
965 | jc .ret |
||
966 | pushad |
||
967 | mov esi, [ntfs_data.cur_index_buf] |
||
968 | mov eax, [esi+14h] |
||
969 | add eax, 10h |
||
970 | cmp [ntfs_cur_read], eax |
||
971 | jae .readok1 |
||
972 | add eax, 1FFh |
||
973 | shr eax, 9 |
||
974 | cmp eax, [ntfs_data.cur_index_size] |
||
975 | ja @f |
||
976 | .stc_ret: |
||
977 | popad |
||
978 | stc |
||
979 | ret |
||
980 | @@: |
||
981 | ; reallocate |
||
982 | push eax |
||
983 | push [ntfs_data.cur_index_buf] |
||
984 | call kernel_free |
||
864 | serge | 985 | pop ecx |
986 | mov [ntfs_data.cur_index_size], ecx |
||
987 | mov edx, PG_SW |
||
988 | call @mem_alloc@8 |
||
257 | diamond | 989 | test eax, eax |
990 | jnz @f |
||
991 | and [ntfs_data.cur_index_size], 0 |
||
992 | and [ntfs_data.cur_index_buf], 0 |
||
993 | jmp .stc_ret |
||
994 | @@: |
||
995 | mov [ntfs_data.cur_index_buf], eax |
||
996 | popad |
||
997 | jmp .doit2 |
||
998 | .readok1: |
||
999 | mov ebp, [esi+8] ; subnode_size |
||
1000 | shr ebp, 9 |
||
1001 | cmp ebp, [ntfs_data.cur_index_size] |
||
1002 | jbe .ok2 |
||
864 | serge | 1003 | |
1004 | mov ecx, ebp |
||
1005 | mov edx, PG_SW |
||
1006 | call @mem_alloc@8 |
||
257 | diamond | 1007 | test eax, eax |
1008 | jz .stc_ret |
||
864 | serge | 1009 | |
257 | diamond | 1010 | mov edi, eax |
1011 | mov ecx, [ntfs_data.cur_index_size] |
||
1012 | shl ecx, 9-2 |
||
1013 | rep movsd |
||
1014 | mov esi, eax |
||
1015 | mov [ntfs_data.cur_index_size], ebp |
||
1016 | push esi ebp |
||
1017 | push [ntfs_data.cur_index_buf] |
||
1018 | call kernel_free |
||
1019 | pop ebp esi |
||
1020 | mov [ntfs_data.cur_index_buf], esi |
||
1021 | .ok2: |
||
1022 | add esi, 10h |
||
1023 | mov edi, [esp+4] |
||
1024 | ; edi -> name, esi -> current index data, ebp = subnode size |
||
1025 | .scanloop: |
||
1026 | add esi, [esi] |
||
1027 | .scanloopint: |
||
1028 | test byte [esi+0Ch], 2 |
||
1029 | jnz .subnode |
||
1030 | push esi |
||
1031 | add esi, 0x52 |
||
1032 | movzx ecx, byte [esi-2] |
||
1033 | push edi |
||
1034 | @@: |
||
1035 | lodsw |
||
1036 | call uni2ansi_char |
||
1037 | call char_toupper |
||
1038 | push eax |
||
1039 | mov al, [edi] |
||
1040 | inc edi |
||
820 | diamond | 1041 | cmp al, '/' |
1042 | jz .slash |
||
257 | diamond | 1043 | call char_toupper |
1044 | cmp al, [esp] |
||
1045 | pop eax |
||
1046 | loopz @b |
||
1047 | jz .found |
||
1048 | pop edi |
||
1049 | pop esi |
||
1050 | jb .subnode |
||
1051 | .scanloopcont: |
||
1052 | movzx eax, word [esi+8] |
||
1053 | add esi, eax |
||
1054 | jmp .scanloopint |
||
820 | diamond | 1055 | .slash: |
1056 | pop eax |
||
1057 | pop edi |
||
1058 | pop esi |
||
257 | diamond | 1059 | .subnode: |
1060 | test byte [esi+0Ch], 1 |
||
1061 | jz .notfound |
||
1062 | movzx eax, word [esi+8] |
||
1063 | mov eax, [esi+eax-8] |
||
1064 | mul [ntfs_data.sectors_per_cluster] |
||
1065 | mov [ntfs_cur_offs], eax |
||
1066 | mov [ntfs_cur_attr], 0xA0 ; $INDEX_ALLOCATION |
||
1067 | mov [ntfs_cur_size], ebp |
||
1068 | mov eax, [ntfs_data.cur_index_buf] |
||
1069 | mov esi, eax |
||
1070 | mov [ntfs_cur_buf], eax |
||
1071 | call ntfs_read_attr |
||
1072 | mov eax, ebp |
||
1073 | shl eax, 9 |
||
1074 | cmp [ntfs_cur_read], eax |
||
1075 | jnz .notfound |
||
1076 | cmp dword [esi], 'INDX' |
||
1077 | jnz .notfound |
||
1078 | mov ebx, esi |
||
1079 | call ntfs_restore_usa |
||
1080 | jc .notfound |
||
1081 | add esi, 0x18 |
||
1082 | jmp .scanloop |
||
1083 | .notfound: |
||
1084 | popad |
||
1085 | stc |
||
1086 | ret |
||
1087 | .found: |
||
1088 | cmp byte [edi], 0 |
||
1089 | jz .done |
||
1090 | cmp byte [edi], '/' |
||
1091 | jz .next |
||
1092 | pop edi |
||
1093 | pop esi |
||
1094 | jmp .scanloopcont |
||
1095 | .done: |
||
1096 | .next: |
||
1097 | pop esi |
||
1098 | pop esi |
||
1099 | mov eax, [esi] |
||
1100 | mov [ntfs_cur_iRecord], eax |
||
262 | diamond | 1101 | mov [esp+1Ch], esi |
257 | diamond | 1102 | mov [esp+4], edi |
1103 | popad |
||
1104 | inc esi |
||
1105 | cmp byte [esi-1], 0 |
||
1106 | jnz .doit2 |
||
521 | diamond | 1107 | test ebp, ebp |
1108 | jz @f |
||
1109 | mov esi, ebp |
||
1110 | xor ebp, ebp |
||
1111 | jmp .doit2 |
||
1112 | @@: |
||
257 | diamond | 1113 | ret |
1114 | |||
256 | diamond | 1115 | ;---------------------------------------------------------------- |
1116 | ; |
||
1117 | ; ntfs_HdRead - read NTFS hard disk |
||
1118 | ; |
||
1119 | ; esi points to filename |
||
1120 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
||
1121 | ; may be ebx=0 - start from first byte |
||
1122 | ; ecx number of bytes to read, 0+ |
||
1123 | ; edx mem location to return data |
||
1124 | ; |
||
1125 | ; ret ebx = bytes read or 0xffffffff file not found |
||
1126 | ; eax = 0 ok read or other = errormsg |
||
1127 | ; |
||
1128 | ;-------------------------------------------------------------- |
||
1129 | ntfs_HdRead: |
||
262 | diamond | 1130 | cmp byte [esi], 0 |
1131 | jnz @f |
||
256 | diamond | 1132 | or ebx, -1 |
262 | diamond | 1133 | push ERROR_ACCESS_DENIED |
1134 | pop eax |
||
256 | diamond | 1135 | ret |
262 | diamond | 1136 | @@: |
1137 | call ntfs_find_lfn |
||
1138 | jnc .found |
||
1139 | or ebx, -1 |
||
1140 | push ERROR_FILE_NOT_FOUND |
||
1141 | pop eax |
||
1142 | ret |
||
1143 | .found: |
||
1144 | mov [ntfs_cur_attr], 0x80 ; $DATA |
||
1145 | and [ntfs_cur_offs], 0 |
||
1146 | and [ntfs_cur_size], 0 |
||
1147 | call ntfs_read_attr |
||
1148 | jnc @f |
||
1149 | or ebx, -1 |
||
1150 | push ERROR_ACCESS_DENIED |
||
1151 | pop eax |
||
1152 | ret |
||
1153 | @@: |
||
1154 | pushad |
||
1155 | and dword [esp+10h], 0 |
||
1156 | xor eax, eax |
||
1157 | test ebx, ebx |
||
1158 | jz .zero1 |
||
1159 | cmp dword [ebx+4], 0x200 |
||
1160 | jb @f |
||
1161 | .eof0: |
||
1162 | popad |
||
1163 | xor ebx, ebx |
||
1164 | .eof: |
||
1165 | push ERROR_END_OF_FILE |
||
1166 | pop eax |
||
1167 | ret |
||
1168 | @@: |
||
1169 | mov eax, [ebx] |
||
1170 | test eax, 0x1FF |
||
1171 | jz .alignedstart |
||
1172 | push edx |
||
1173 | mov edx, [ebx+4] |
||
1174 | shrd eax, edx, 9 |
||
1175 | pop edx |
||
1176 | mov [ntfs_cur_offs], eax |
||
1177 | mov [ntfs_cur_size], 1 |
||
1178 | mov [ntfs_cur_buf], ntfs_bitmap_buf |
||
1179 | call ntfs_read_attr.continue |
||
1180 | mov eax, [ebx] |
||
1181 | and eax, 0x1FF |
||
1182 | lea esi, [ntfs_bitmap_buf+eax] |
||
1183 | sub eax, [ntfs_cur_read] |
||
1184 | jae .eof0 |
||
1185 | neg eax |
||
1186 | push ecx |
||
1187 | cmp ecx, eax |
||
1188 | jb @f |
||
1189 | mov ecx, eax |
||
1190 | @@: |
||
1191 | mov [esp+10h+4], ecx |
||
1192 | mov edi, edx |
||
1193 | rep movsb |
||
1194 | mov edx, edi |
||
1195 | pop ecx |
||
1196 | sub ecx, [esp+10h] |
||
1197 | jnz @f |
||
1198 | .retok: |
||
1199 | popad |
||
1200 | xor eax, eax |
||
1201 | ret |
||
1202 | @@: |
||
1203 | cmp [ntfs_cur_read], 0x200 |
||
1204 | jz .alignedstart |
||
1205 | .eof_ebx: |
||
1206 | popad |
||
1207 | jmp .eof |
||
1208 | .alignedstart: |
||
1209 | mov eax, [ebx] |
||
1210 | push edx |
||
1211 | mov edx, [ebx+4] |
||
1212 | add eax, 511 |
||
1213 | adc edx, 0 |
||
1214 | shrd eax, edx, 9 |
||
1215 | pop edx |
||
1216 | .zero1: |
||
1217 | mov [ntfs_cur_offs], eax |
||
1218 | mov [ntfs_cur_buf], edx |
||
1219 | mov eax, ecx |
||
1220 | shr eax, 9 |
||
1221 | mov [ntfs_cur_size], eax |
||
1222 | add eax, [ntfs_cur_offs] |
||
1223 | push eax |
||
1224 | call ntfs_read_attr.continue |
||
1225 | pop [ntfs_cur_offs] |
||
1226 | mov eax, [ntfs_cur_read] |
||
1227 | add [esp+10h], eax |
||
1228 | mov eax, ecx |
||
1229 | and eax, not 0x1FF |
||
1230 | cmp [ntfs_cur_read], eax |
||
1231 | jnz .eof_ebx |
||
1232 | and ecx, 0x1FF |
||
1233 | jz .retok |
||
1234 | add edx, [ntfs_cur_read] |
||
1235 | mov [ntfs_cur_size], 1 |
||
1236 | mov [ntfs_cur_buf], ntfs_bitmap_buf |
||
1237 | call ntfs_read_attr.continue |
||
1238 | cmp [ntfs_cur_read], ecx |
||
1239 | jb @f |
||
1240 | mov [ntfs_cur_read], ecx |
||
1241 | @@: |
||
1242 | xchg ecx, [ntfs_cur_read] |
||
1243 | push ecx |
||
1244 | mov edi, edx |
||
1245 | mov esi, ntfs_bitmap_buf |
||
1246 | add [esp+10h+4], ecx |
||
1247 | rep movsb |
||
1248 | pop ecx |
||
1249 | xor eax, eax |
||
1250 | cmp ecx, [ntfs_cur_read] |
||
1251 | jz @f |
||
1252 | mov al, ERROR_END_OF_FILE |
||
1253 | @@: |
||
1254 | mov [esp+1Ch], eax |
||
1255 | popad |
||
1256 | ret |
||
256 | diamond | 1257 | |
1258 | ;---------------------------------------------------------------- |
||
1259 | ; |
||
1260 | ; ntfs_HdReadFolder - read NTFS hard disk folder |
||
1261 | ; |
||
1262 | ; esi points to filename |
||
1263 | ; ebx pointer to structure 32-bit number = first wanted block, 0+ |
||
1264 | ; & flags (bitfields) |
||
1265 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
||
1266 | ; ecx number of blocks to read, 0+ |
||
1267 | ; edx mem location to return data |
||
1268 | ; |
||
1269 | ; ret ebx = blocks read or 0xffffffff folder not found |
||
1270 | ; eax = 0 ok read or other = errormsg |
||
1271 | ; |
||
1272 | ;-------------------------------------------------------------- |
||
1273 | ntfs_HdReadFolder: |
||
1274 | mov eax, 5 ; root cluster |
||
1275 | cmp byte [esi], 0 |
||
1276 | jz .doit |
||
257 | diamond | 1277 | call ntfs_find_lfn |
1278 | jnc .doit2 |
||
256 | diamond | 1279 | .notfound: |
1280 | or ebx, -1 |
||
1281 | push ERROR_FILE_NOT_FOUND |
||
1282 | .pop_ret: |
||
1283 | pop eax |
||
1284 | ret |
||
1285 | .doit: |
||
1286 | mov [ntfs_cur_iRecord], eax |
||
1287 | .doit2: |
||
257 | diamond | 1288 | mov [ntfs_cur_attr], 0x10 ; $STANDARD_INFORMATION |
1289 | and [ntfs_cur_offs], 0 |
||
1290 | mov [ntfs_cur_size], 1 |
||
1291 | mov [ntfs_cur_buf], ntfs_bitmap_buf |
||
1292 | call ntfs_read_attr |
||
1293 | jc .notfound |
||
256 | diamond | 1294 | mov [ntfs_cur_attr], 0x90 ; $INDEX_ROOT |
1295 | and [ntfs_cur_offs], 0 |
||
1296 | mov eax, [ntfs_data.cur_index_size] |
||
1297 | mov [ntfs_cur_size], eax |
||
1298 | mov eax, [ntfs_data.cur_index_buf] |
||
1299 | mov [ntfs_cur_buf], eax |
||
1300 | call ntfs_read_attr |
||
1301 | jnc .ok |
||
1302 | cmp [hd_error], 0 |
||
1303 | jz .notfound |
||
1304 | or ebx, -1 |
||
1305 | push 11 |
||
1306 | jmp .pop_ret |
||
1307 | .ok: |
||
1308 | cmp [ntfs_cur_read], 0x20 |
||
1309 | jae @f |
||
1310 | or ebx, -1 |
||
1311 | .fserr: |
||
1312 | push ERROR_FAT_TABLE |
||
1313 | jmp .pop_ret |
||
1314 | @@: |
||
1315 | pushad |
||
1316 | mov esi, [ntfs_data.cur_index_buf] |
||
1317 | mov eax, [esi+14h] |
||
1318 | add eax, 10h |
||
1319 | cmp [ntfs_cur_read], eax |
||
1320 | jae .readok1 |
||
1321 | add eax, 1FFh |
||
1322 | shr eax, 9 |
||
1323 | cmp eax, [ntfs_data.cur_index_size] |
||
1324 | ja @f |
||
1325 | popad |
||
1326 | jmp .fserr |
||
1327 | @@: |
||
1328 | ; reallocate |
||
1329 | push eax |
||
1330 | push [ntfs_data.cur_index_buf] |
||
1331 | call kernel_free |
||
864 | serge | 1332 | pop ecx |
1333 | mov [ntfs_data.cur_index_size], ecx |
||
1334 | mov edx, PG_SW |
||
1335 | call @mem_alloc@8 |
||
256 | diamond | 1336 | test eax, eax |
1337 | jnz @f |
||
1338 | and [ntfs_data.cur_index_size], 0 |
||
1339 | and [ntfs_data.cur_index_buf], 0 |
||
1340 | .nomem: |
||
1341 | popad |
||
1342 | or ebx, -1 |
||
1343 | push 12 |
||
1344 | pop eax |
||
1345 | ret |
||
1346 | @@: |
||
1347 | mov [ntfs_data.cur_index_buf], eax |
||
1348 | popad |
||
1349 | jmp .doit2 |
||
1350 | .readok1: |
||
1351 | mov ebp, [esi+8] ; subnode_size |
||
1352 | shr ebp, 9 |
||
1353 | cmp ebp, [ntfs_data.cur_index_size] |
||
1354 | jbe .ok2 |
||
864 | serge | 1355 | |
1356 | mov ecx, ebp |
||
1357 | mov edx, PG_SW |
||
1358 | call @mem_alloc@8 |
||
256 | diamond | 1359 | test eax, eax |
1360 | jz .nomem |
||
864 | serge | 1361 | |
256 | diamond | 1362 | mov edi, eax |
1363 | mov ecx, [ntfs_data.cur_index_size] |
||
1364 | shl ecx, 9-2 |
||
1365 | rep movsd |
||
1366 | mov esi, eax |
||
1367 | mov [ntfs_data.cur_index_size], ebp |
||
1368 | push esi ebp |
||
1369 | push [ntfs_data.cur_index_buf] |
||
1370 | call kernel_free |
||
1371 | pop ebp esi |
||
1372 | mov [ntfs_data.cur_index_buf], esi |
||
1373 | .ok2: |
||
1374 | add esi, 10h |
||
1375 | mov ebx, [esp+10h] |
||
1376 | mov edx, [esp+14h] |
||
1377 | push dword [ebx+4] ; read ANSI/UNICODE name |
||
1378 | mov ebx, [ebx] |
||
1379 | ; init header |
||
1380 | mov edi, edx |
||
1381 | mov ecx, 32/4 |
||
1382 | xor eax, eax |
||
1383 | rep stosd |
||
1384 | mov byte [edx], 1 ; version |
||
1385 | mov ecx, [esp+4+18h] |
||
1386 | push edx |
||
1387 | mov edx, esp |
||
1388 | ; edi -> BDFE, esi -> current index data, ebp = subnode size, ebx = first wanted block, |
||
1389 | ; ecx = number of blocks to read |
||
1390 | ; edx -> parameters block: dd |
||
257 | diamond | 1391 | cmp [ntfs_cur_iRecord], 5 |
1392 | jz .skip_specials |
||
1393 | ; dot and dotdot entries |
||
1394 | push esi |
||
1395 | xor esi, esi |
||
1396 | call .add_special_entry |
||
1397 | inc esi |
||
1398 | call .add_special_entry |
||
1399 | pop esi |
||
1400 | .skip_specials: |
||
256 | diamond | 1401 | ; at first, dump index root |
1402 | add esi, [esi] |
||
1403 | .dump_root: |
||
1404 | test byte [esi+0Ch], 2 |
||
1405 | jnz .dump_root_done |
||
1406 | call .add_entry |
||
1407 | movzx eax, word [esi+8] |
||
1408 | add esi, eax |
||
1409 | jmp .dump_root |
||
1410 | .dump_root_done: |
||
1411 | ; now dump all subnodes |
||
1412 | push ecx edi |
||
1413 | mov edi, ntfs_bitmap_buf |
||
1414 | mov [ntfs_cur_buf], edi |
||
1415 | mov ecx, 0x400/4 |
||
1416 | xor eax, eax |
||
1417 | rep stosd |
||
1418 | mov [ntfs_cur_attr], 0xB0 ; $BITMAP |
||
1419 | and [ntfs_cur_offs], 0 |
||
1420 | mov [ntfs_cur_size], 2 |
||
1421 | call ntfs_read_attr |
||
1422 | pop edi ecx |
||
1423 | push 0 ; save offset in $BITMAP attribute |
||
1424 | and [ntfs_cur_offs], 0 |
||
1425 | .dumploop: |
||
1426 | mov [ntfs_cur_attr], 0xA0 |
||
1427 | mov [ntfs_cur_size], ebp |
||
1428 | mov eax, [ntfs_data.cur_index_buf] |
||
1429 | mov esi, eax |
||
1430 | mov [ntfs_cur_buf], eax |
||
1431 | push [ntfs_cur_offs] |
||
257 | diamond | 1432 | mov eax, [ntfs_cur_offs] |
1433 | imul eax, ebp |
||
1434 | mov [ntfs_cur_offs], eax |
||
256 | diamond | 1435 | call ntfs_read_attr |
1436 | pop [ntfs_cur_offs] |
||
1437 | mov eax, ebp |
||
1438 | shl eax, 9 |
||
1439 | cmp [ntfs_cur_read], eax |
||
1440 | jnz .done |
||
1441 | push eax |
||
1442 | mov eax, [ntfs_cur_offs] |
||
1443 | and eax, 0x400*8-1 |
||
1444 | bt dword [ntfs_bitmap_buf], eax |
||
1445 | pop eax |
||
1446 | jnc .dump_subnode_done |
||
1447 | cmp dword [esi], 'INDX' |
||
1448 | jnz .dump_subnode_done |
||
1449 | push ebx |
||
1450 | mov ebx, esi |
||
1451 | call ntfs_restore_usa |
||
1452 | pop ebx |
||
1453 | jc .dump_subnode_done |
||
1454 | add esi, 0x18 |
||
1455 | add esi, [esi] |
||
1456 | .dump_subnode: |
||
1457 | test byte [esi+0Ch], 2 |
||
1458 | jnz .dump_subnode_done |
||
1459 | call .add_entry |
||
1460 | movzx eax, word [esi+8] |
||
1461 | add esi, eax |
||
1462 | jmp .dump_subnode |
||
1463 | .dump_subnode_done: |
||
1464 | inc [ntfs_cur_offs] |
||
1465 | test [ntfs_cur_offs], 0x400*8-1 |
||
1466 | jnz .dumploop |
||
1467 | mov [ntfs_cur_attr], 0xB0 |
||
1468 | push ecx edi |
||
1469 | mov edi, ntfs_bitmap_buf |
||
1470 | mov [ntfs_cur_buf], edi |
||
1471 | mov ecx, 0x400/4 |
||
1472 | xor eax, eax |
||
1473 | rep stosd |
||
1474 | pop edi ecx |
||
1475 | pop eax |
||
1476 | push [ntfs_cur_offs] |
||
1477 | inc eax |
||
1478 | mov [ntfs_cur_offs], eax |
||
1479 | mov [ntfs_cur_size], 2 |
||
1480 | push eax |
||
1481 | call ntfs_read_attr |
||
1482 | pop eax |
||
1483 | pop [ntfs_cur_offs] |
||
1484 | push eax |
||
1485 | jmp .dumploop |
||
1486 | .done: |
||
1487 | pop eax |
||
1488 | pop edx |
||
1489 | mov ebx, [edx+4] |
||
1490 | pop edx |
||
1491 | xor eax, eax |
||
1492 | dec ecx |
||
1493 | js @f |
||
1494 | mov al, ERROR_END_OF_FILE |
||
1495 | @@: |
||
1496 | mov [esp+1Ch], eax |
||
1497 | mov [esp+10h], ebx |
||
1498 | popad |
||
1499 | ret |
||
1500 | |||
257 | diamond | 1501 | .add_special_entry: |
1502 | mov eax, [edx] |
||
1503 | inc dword [eax+8] ; new file found |
||
1504 | dec ebx |
||
1505 | jns .ret |
||
1506 | dec ecx |
||
1507 | js .ret |
||
1508 | inc dword [eax+4] ; new file block copied |
||
1509 | mov eax, [edx+4] |
||
1510 | mov [edi+4], eax |
||
1511 | ; mov eax, dword [ntfs_bitmap_buf+0x20] |
||
1512 | ; or al, 0x10 |
||
1513 | mov eax, 0x10 |
||
1514 | stosd |
||
1515 | scasd |
||
1516 | push edx |
||
1517 | mov eax, dword [ntfs_bitmap_buf] |
||
1518 | mov edx, dword [ntfs_bitmap_buf+4] |
||
1519 | call ntfs_datetime_to_bdfe |
||
1520 | mov eax, dword [ntfs_bitmap_buf+0x18] |
||
1521 | mov edx, dword [ntfs_bitmap_buf+0x1C] |
||
1522 | call ntfs_datetime_to_bdfe |
||
1523 | mov eax, dword [ntfs_bitmap_buf+8] |
||
1524 | mov edx, dword [ntfs_bitmap_buf+0xC] |
||
1525 | call ntfs_datetime_to_bdfe |
||
1526 | pop edx |
||
1527 | xor eax, eax |
||
1528 | stosd |
||
1529 | stosd |
||
1530 | mov al, '.' |
||
1531 | push edi ecx |
||
1532 | lea ecx, [esi+1] |
||
1533 | test byte [edi-0x24], 1 |
||
1534 | jz @f |
||
1535 | rep stosw |
||
1536 | pop ecx |
||
1537 | xor eax, eax |
||
1538 | stosw |
||
1539 | pop edi |
||
1540 | add edi, 520 |
||
1541 | ret |
||
1542 | @@: |
||
1543 | rep stosb |
||
1544 | pop ecx |
||
1545 | xor eax, eax |
||
1546 | stosb |
||
1547 | pop edi |
||
1548 | add edi, 264 |
||
1549 | .ret: |
||
1550 | ret |
||
1551 | |||
256 | diamond | 1552 | .add_entry: |
1553 | ; do not return DOS 8.3 names |
||
1554 | cmp byte [esi+0x51], 2 |
||
1555 | jz .ret |
||
1556 | ; do not return system files |
||
1557 | ; ... note that there will be no bad effects if system files also were reported ... |
||
1558 | cmp dword [esi], 0x10 |
||
1559 | jb .ret |
||
1560 | mov eax, [edx] |
||
1561 | inc dword [eax+8] ; new file found |
||
1562 | dec ebx |
||
1563 | jns .ret |
||
1564 | dec ecx |
||
1565 | js .ret |
||
1566 | inc dword [eax+4] ; new file block copied |
||
1567 | mov eax, [edx+4] ; flags |
||
262 | diamond | 1568 | call ntfs_direntry_to_bdfe |
256 | diamond | 1569 | push ecx esi edi |
1570 | movzx ecx, byte [esi+0x50] |
||
1571 | add esi, 0x52 |
||
1572 | test byte [edi-0x24], 1 |
||
1573 | jz .ansi |
||
1574 | shr ecx, 1 |
||
1575 | rep movsd |
||
1576 | adc ecx, ecx |
||
1577 | rep movsw |
||
1578 | and word [edi], 0 |
||
1579 | pop edi |
||
1580 | add edi, 520 |
||
1581 | pop esi ecx |
||
1582 | ret |
||
1583 | .ansi: |
||
1584 | jecxz .skip |
||
1585 | @@: |
||
1586 | lodsw |
||
1587 | call uni2ansi_char |
||
1588 | stosb |
||
1589 | loop @b |
||
1590 | .skip: |
||
1591 | xor al, al |
||
1592 | stosb |
||
1593 | pop edi |
||
1594 | add edi, 264 |
||
1595 | pop esi ecx |
||
1596 | ret |
||
1597 | |||
262 | diamond | 1598 | ntfs_direntry_to_bdfe: |
1599 | mov [edi+4], eax ; ANSI/UNICODE name |
||
1600 | mov eax, [esi+48h] |
||
1601 | test eax, 0x10000000 |
||
1602 | jz @f |
||
1603 | and eax, not 0x10000000 |
||
1604 | or al, 0x10 |
||
1605 | @@: |
||
1606 | stosd |
||
1607 | scasd |
||
1608 | push edx |
||
1609 | mov eax, [esi+0x18] |
||
1610 | mov edx, [esi+0x1C] |
||
1611 | call ntfs_datetime_to_bdfe |
||
1612 | mov eax, [esi+0x30] |
||
1613 | mov edx, [esi+0x34] |
||
1614 | call ntfs_datetime_to_bdfe |
||
1615 | mov eax, [esi+0x20] |
||
1616 | mov edx, [esi+0x24] |
||
1617 | call ntfs_datetime_to_bdfe |
||
1618 | pop edx |
||
1619 | mov eax, [esi+0x40] |
||
1620 | stosd |
||
1621 | mov eax, [esi+0x44] |
||
1622 | stosd |
||
1623 | ret |
||
1624 | |||
256 | diamond | 1625 | iglobal |
1626 | _24 dd 24 |
||
1627 | _60 dd 60 |
||
1628 | _10000000 dd 10000000 |
||
1629 | days400year dd 365*400+100-4+1 |
||
1630 | days100year dd 365*100+25-1 |
||
1631 | days4year dd 365*4+1 |
||
1632 | days1year dd 365 |
||
1633 | months dd 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 |
||
1634 | months2 dd 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 |
||
1635 | _400 dd 400 |
||
1636 | _100 dd 100 |
||
1637 | endg |
||
1638 | |||
1639 | ntfs_datetime_to_bdfe: |
||
1640 | ; edx:eax = number of 100-nanosecond intervals since January 1, 1601, in UTC |
||
1641 | push eax |
||
1642 | mov eax, edx |
||
1643 | xor edx, edx |
||
1644 | div [_10000000] |
||
1645 | xchg eax, [esp] |
||
1646 | div [_10000000] |
||
1647 | pop edx |
||
1648 | ; edx:eax = number of seconds since January 1, 1601 |
||
1649 | push eax |
||
1650 | mov eax, edx |
||
1651 | xor edx, edx |
||
1652 | div [_60] |
||
1653 | xchg eax, [esp] |
||
1654 | div [_60] |
||
1655 | mov [edi], dl |
||
1656 | pop edx |
||
1657 | ; edx:eax = number of minutes |
||
1658 | div [_60] |
||
1659 | mov [edi+1], dl |
||
1660 | ; eax = number of hours (note that 2^64/(10^7*60*60) < 2^32) |
||
1661 | xor edx, edx |
||
1662 | div [_24] |
||
1663 | mov [edi+2], dl |
||
1664 | mov [edi+3], byte 0 |
||
1665 | ; eax = number of days since January 1, 1601 |
||
1666 | xor edx, edx |
||
1667 | div [days400year] |
||
1668 | imul eax, 400 |
||
1669 | add eax, 1601 |
||
1670 | mov [edi+6], ax |
||
1671 | mov eax, edx |
||
1672 | xor edx, edx |
||
1673 | div [days100year] |
||
1674 | cmp al, 4 |
||
1675 | jnz @f |
||
1676 | dec eax |
||
1677 | add edx, [days100year] |
||
1678 | @@: |
||
1679 | imul eax, 100 |
||
1680 | add [edi+6], ax |
||
1681 | mov eax, edx |
||
1682 | xor edx, edx |
||
1683 | div [days4year] |
||
1684 | shl eax, 2 |
||
1685 | add [edi+6], ax |
||
1686 | mov eax, edx |
||
1687 | xor edx, edx |
||
1688 | div [days1year] |
||
1689 | cmp al, 4 |
||
1690 | jnz @f |
||
1691 | dec eax |
||
1692 | add edx, [days1year] |
||
1693 | @@: |
||
1694 | add [edi+6], ax |
||
1695 | push esi edx |
||
1696 | mov esi, months |
||
1697 | movzx eax, word [edi+6] |
||
1698 | test al, 3 |
||
1699 | jnz .noleap |
||
1700 | xor edx, edx |
||
1701 | push eax |
||
1702 | div [_400] |
||
1703 | pop eax |
||
1704 | test edx, edx |
||
1705 | jz .leap |
||
1706 | xor edx, edx |
||
1707 | div [_100] |
||
1708 | test edx, edx |
||
1709 | jz .noleap |
||
1710 | .leap: |
||
1711 | mov esi, months2 |
||
1712 | .noleap: |
||
1713 | pop edx |
||
1714 | xor eax, eax |
||
1715 | inc eax |
||
1716 | @@: |
||
1717 | sub edx, [esi] |
||
1718 | jb @f |
||
1719 | add esi, 4 |
||
1720 | inc eax |
||
1721 | jmp @b |
||
1722 | @@: |
||
1723 | add edx, [esi] |
||
1724 | pop esi |
||
1725 | inc edx |
||
1726 | mov [edi+4], dl |
||
1727 | mov [edi+5], al |
||
1728 | add edi, 8 |
||
1729 | ret |
||
1730 | |||
1731 | ;---------------------------------------------------------------- |
||
1732 | ; |
||
1733 | ; ntfs_HdRewrite - write to NTFS hard disk |
||
1734 | ; |
||
1735 | ; esi points to filename |
||
1736 | ; ebx ignored (reserved) |
||
1737 | ; ecx number of bytes to write, 0+ |
||
1738 | ; edx mem location to data |
||
1739 | ; |
||
1740 | ; ret ebx = number of written bytes |
||
1741 | ; eax = 0 ok read or other = errormsg |
||
1742 | ; |
||
1743 | ;-------------------------------------------------------------- |
||
1744 | ntfs_HdRewrite: |
||
1745 | xor ebx, ebx |
||
1746 | mov eax, ERROR_UNSUPPORTED_FS |
||
1747 | ret |
||
1748 | |||
1749 | ;---------------------------------------------------------------- |
||
1750 | ; |
||
1751 | ; ntfs_HdWrite - write to NTFS hard disk |
||
1752 | ; |
||
1753 | ; esi points to filename |
||
1754 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
||
1755 | ; may be ebx=0 - start from first byte |
||
1756 | ; ecx number of bytes to write, 0+ |
||
1757 | ; edx mem location to data |
||
1758 | ; |
||
1759 | ; ret ebx = bytes written (maybe 0) |
||
1760 | ; eax = 0 ok write or other = errormsg |
||
1761 | ; |
||
1762 | ;-------------------------------------------------------------- |
||
1763 | ntfs_HdWrite: |
||
1764 | xor ebx, ebx |
||
1765 | mov eax, ERROR_UNSUPPORTED_FS |
||
1766 | ret |
||
1767 | |||
1768 | ;---------------------------------------------------------------- |
||
1769 | ; |
||
1770 | ; ntfs_HdSetFileEnd - set end of file on NTFS hard disk |
||
1771 | ; |
||
1772 | ; esi points to filename |
||
1773 | ; ebx points to 64-bit number = new file size |
||
1774 | ; ecx ignored (reserved) |
||
1775 | ; edx ignored (reserved) |
||
1776 | ; |
||
1777 | ; ret eax = 0 ok or other = errormsg |
||
1778 | ; |
||
1779 | ;-------------------------------------------------------------- |
||
1780 | ntfs_HdSetFileEnd: |
||
1781 | ntfs_HdSetFileInfo: |
||
1782 | ;---------------------------------------------------------------- |
||
1783 | ; |
||
1784 | ; ntfs_HdDelete - delete file or empty folder from NTFS hard disk |
||
1785 | ; |
||
1786 | ; esi points to filename |
||
1787 | ; |
||
1788 | ; ret eax = 0 ok or other = errormsg |
||
1789 | ; |
||
1790 | ;-------------------------------------------------------------- |
||
1791 | ntfs_HdDelete: |
||
1792 | mov eax, ERROR_UNSUPPORTED_FS |
||
1793 | ret |
||
1794 | |||
1795 | ntfs_HdGetFileInfo: |
||
262 | diamond | 1796 | cmp byte [esi], 0 |
1797 | jnz @f |
||
1798 | push 2 |
||
1799 | pop eax |
||
256 | diamond | 1800 | ret |
262 | diamond | 1801 | @@: |
1802 | call ntfs_find_lfn |
||
1803 | jnc .doit |
||
1804 | push ERROR_FILE_NOT_FOUND |
||
1805 | pop eax |
||
1806 | cmp [hd_error], 0 |
||
1807 | jz @f |
||
1808 | mov al, 11 |
||
1809 | @@: |
||
1810 | ret |
||
1811 | .doit: |
||
1812 | push esi edi |
||
1813 | mov esi, eax |
||
1814 | mov edi, edx |
||
1815 | xor eax, eax |
||
1816 | call ntfs_direntry_to_bdfe |
||
1817 | pop edi esi |
||
1818 | xor eax, eax |
||
1819 | ret>=>=>=> |