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Rev | Author | Line No. | Line |
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2288 | clevermous | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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2455 | mario79 | 3 | ;; Copyright (C) KolibriOS team 2004-2011. 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: 3598 $ |
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9 | |||
10 | |||
11 | ntfs_test_bootsec: |
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12 | ; in: ebx->buffer, edx=size of partition |
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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 ; checking boot sector was already |
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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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136 | mov [ntfs_data.iab_size], eax |
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137 | ; allocate space for buffers |
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138 | add eax, [ntfs_data.frs_size] |
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139 | push eax |
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140 | call kernel_alloc |
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141 | test eax, eax |
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142 | jz problem_fat_dec_count |
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143 | mov [ntfs_data.frs_buffer], eax |
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144 | add eax, [ntfs_data.frs_size] |
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145 | mov [ntfs_data.iab_buffer], eax |
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146 | ; read $MFT disposition |
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147 | mov eax, [ntfs_data.mft_cluster] |
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148 | mul [ntfs_data.sectors_per_cluster] |
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149 | call ntfs_read_frs_sector |
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150 | cmp [hd_error], 0 |
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151 | jnz .usemirr |
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152 | cmp dword [ebx], 'FILE' |
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153 | jnz .usemirr |
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154 | call ntfs_restore_usa_frs |
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155 | jnc .mftok |
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156 | .usemirr: |
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157 | and [hd_error], 0 |
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158 | mov eax, [ntfs_data.mftmirr_cluster] |
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159 | mul [ntfs_data.sectors_per_cluster] |
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160 | call ntfs_read_frs_sector |
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161 | cmp [hd_error], 0 |
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162 | jnz @f |
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163 | cmp dword [ebx], 'FILE' |
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164 | jnz @f |
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165 | call ntfs_restore_usa_frs |
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166 | jnc .mftok |
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167 | @@: |
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168 | ; $MFT and $MFTMirr invalid! |
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169 | .fail_free_frs: |
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170 | push [ntfs_data.frs_buffer] |
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171 | call kernel_free |
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172 | jmp problem_fat_dec_count |
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173 | .fail_free_mft: |
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174 | push [ntfs_data.mft_retrieval] |
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175 | call kernel_free |
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176 | jmp .fail_free_frs |
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177 | .mftok: |
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178 | ; read $MFT table retrieval information |
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179 | ; start with one page, increase if not enough (when MFT too fragmented) |
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180 | push ebx |
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181 | push 0x1000 |
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182 | call kernel_alloc |
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183 | pop ebx |
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184 | test eax, eax |
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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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228 | push 0x1000 |
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229 | call kernel_alloc |
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230 | test eax, eax |
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231 | jz .fail_free_mft |
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232 | mov [ntfs_data.cur_index_buf], eax |
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233 | |||
234 | popad |
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235 | call free_hd_channel |
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236 | and [hd1_status], 0 |
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237 | ret |
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238 | |||
239 | .get_mft_retrieval_ptr: |
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240 | pushad |
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241 | mov eax, [ntfs_data.mft_retrieval_size] |
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242 | cmp eax, [ntfs_data.mft_retrieval_alloc] |
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243 | jnz .ok |
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244 | add eax, 0x1000/8 |
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245 | mov [ntfs_data.mft_retrieval_alloc], eax |
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246 | shl eax, 3 |
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247 | push eax |
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248 | call kernel_alloc |
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249 | test eax, eax |
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250 | jnz @f |
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251 | popad |
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252 | add esp, 14h |
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253 | jmp .fail_free_mft |
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254 | @@: |
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255 | mov esi, [ntfs_data.mft_retrieval] |
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256 | mov edi, eax |
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257 | mov ecx, [ntfs_data.mft_retrieval_size] |
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258 | add ecx, ecx |
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259 | rep movsd |
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260 | push [ntfs_data.mft_retrieval] |
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261 | mov [ntfs_data.mft_retrieval], eax |
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262 | call kernel_free |
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263 | mov eax, [ntfs_data.mft_retrieval_size] |
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264 | .ok: |
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265 | shl eax, 3 |
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266 | add eax, [ntfs_data.mft_retrieval] |
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267 | mov [esp+28], eax |
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268 | popad |
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269 | ret |
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270 | |||
271 | ntfs_read_frs_sector: |
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272 | push eax ecx |
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273 | add eax, [PARTITION_START] |
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274 | mov ecx, [ntfs_data.frs_size] |
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275 | shr ecx, 9 |
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276 | mov ebx, [ntfs_data.frs_buffer] |
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277 | push ebx |
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278 | @@: |
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279 | call hd_read |
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280 | cmp [hd_error], 0 |
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281 | jnz .fail |
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282 | add ebx, 0x200 |
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283 | inc eax |
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284 | loop @b |
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285 | .fail: |
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286 | pop ebx |
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287 | pop ecx eax |
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288 | ret |
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289 | |||
290 | uglobal |
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291 | align 4 |
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292 | ntfs_cur_attr dd ? |
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293 | ntfs_cur_iRecord dd ? |
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294 | ntfs_cur_offs dd ? ; in sectors |
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295 | ntfs_cur_size dd ? ; in sectors |
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296 | ntfs_cur_buf dd ? |
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297 | ntfs_cur_read dd ? ; [output] |
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298 | ntfs_bCanContinue db ? |
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299 | rb 3 |
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300 | |||
301 | ntfs_attrlist_buf rb 0x400 |
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302 | ntfs_attrlist_mft_buf rb 0x400 |
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303 | ntfs_bitmap_buf rb 0x400 |
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304 | |||
305 | ntfs_attr_iRecord dd ? |
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306 | ntfs_attr_iBaseRecord dd ? |
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307 | ntfs_attr_offs dd ? |
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308 | ntfs_attr_list dd ? |
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309 | ntfs_attr_size dq ? |
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310 | ntfs_cur_tail dd ? |
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311 | endg |
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312 | |||
313 | ntfs_read_attr: |
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314 | ; in: global variables |
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315 | ; out: [ntfs_cur_read] |
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316 | pushad |
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317 | and [ntfs_cur_read], 0 |
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318 | cmp [ntfs_cur_iRecord], 0 |
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319 | jnz .nomft |
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320 | cmp [ntfs_cur_attr], 0x80 |
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321 | jnz .nomft |
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322 | mov eax, [ntfs_data.mft_retrieval_end] |
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323 | inc eax |
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324 | mul [ntfs_data.sectors_per_cluster] |
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325 | cmp eax, [ntfs_cur_offs] |
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326 | jbe .nomft |
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327 | ; precalculated part of $Mft $DATA |
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328 | mov esi, [ntfs_data.mft_retrieval] |
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329 | mov eax, [ntfs_cur_offs] |
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330 | xor edx, edx |
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331 | div [ntfs_data.sectors_per_cluster] |
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332 | ; eax = VCN, edx = offset in sectors from beginning of cluster |
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333 | xor ecx, ecx ; ecx will contain LCN |
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334 | .mftscan: |
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335 | add ecx, [esi+4] |
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336 | sub eax, [esi] |
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337 | jb @f |
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338 | add esi, 8 |
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339 | push eax |
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340 | mov eax, [ntfs_data.mft_retrieval_end] |
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341 | shl eax, 3 |
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342 | add eax, [ntfs_data.mft_retrieval] |
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343 | cmp eax, esi |
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344 | pop eax |
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345 | jnz .mftscan |
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346 | jmp .nomft |
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347 | @@: |
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348 | push ecx |
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349 | add ecx, eax |
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350 | add ecx, [esi] |
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351 | push eax |
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352 | push edx |
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353 | mov eax, [ntfs_data.sectors_per_cluster] |
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354 | mul ecx |
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355 | ; eax = sector on partition |
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356 | add eax, [PARTITION_START] |
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357 | pop edx |
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358 | add eax, edx |
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359 | mov ebx, [ntfs_cur_buf] |
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360 | pop ecx |
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361 | neg ecx |
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362 | imul ecx, [ntfs_data.sectors_per_cluster] |
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363 | sub ecx, edx |
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364 | cmp ecx, [ntfs_cur_size] |
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365 | jb @f |
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366 | mov ecx, [ntfs_cur_size] |
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367 | @@: |
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368 | ; ecx = number of sequential sectors to read |
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369 | call hd_read |
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370 | cmp [hd_error], 0 |
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371 | jnz .errread |
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372 | add [ntfs_cur_read], 0x200 |
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373 | dec [ntfs_cur_size] |
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374 | inc [ntfs_cur_offs] |
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375 | add ebx, 0x200 |
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376 | mov [ntfs_cur_buf], ebx |
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377 | inc eax |
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378 | loop @b |
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379 | pop ecx |
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380 | xor eax, eax |
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381 | xor edx, edx |
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382 | cmp [ntfs_cur_size], eax |
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383 | jz @f |
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384 | add esi, 8 |
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385 | push eax |
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386 | mov eax, [ntfs_data.mft_retrieval_end] |
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387 | shl eax, 3 |
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388 | add eax, [ntfs_data.mft_retrieval] |
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389 | cmp eax, esi |
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390 | pop eax |
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391 | jz .nomft |
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392 | jmp .mftscan |
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393 | @@: |
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394 | popad |
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395 | ret |
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396 | .errread: |
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397 | pop ecx |
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398 | .errret: |
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399 | stc |
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400 | popad |
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401 | ret |
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402 | .nomft: |
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403 | ; 1. Read file record. |
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404 | ; N.B. This will do recursive call of read_attr for $MFT::$Data. |
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405 | mov eax, [ntfs_cur_iRecord] |
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406 | mov [ntfs_attr_iRecord], eax |
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407 | and [ntfs_attr_list], 0 |
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408 | or dword [ntfs_attr_size], -1 |
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409 | or dword [ntfs_attr_size+4], -1 |
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410 | or [ntfs_attr_iBaseRecord], -1 |
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411 | call ntfs_read_file_record |
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412 | test eax, eax |
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413 | jz .errret |
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414 | ; 2. Find required attribute. |
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415 | mov eax, [ntfs_data.frs_buffer] |
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416 | ; a) For auxiliary records, read base record |
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417 | ; N.B. If base record is present, |
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418 | ; base iRecord may be 0 (for $Mft), but SequenceNumber is nonzero |
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419 | cmp dword [eax+24h], 0 |
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420 | jz @f |
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421 | mov eax, [eax+20h] |
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422 | ; test eax, eax |
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423 | ; jz @f |
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424 | .beginfindattr: |
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425 | mov [ntfs_attr_iRecord], eax |
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426 | call ntfs_read_file_record |
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427 | test eax, eax |
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428 | jz .errret |
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429 | @@: |
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430 | ; b) Scan for required attribute and for $ATTR_LIST |
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431 | mov eax, [ntfs_data.frs_buffer] |
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432 | movzx ecx, word [eax+14h] |
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433 | add eax, ecx |
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434 | mov ecx, [ntfs_cur_attr] |
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435 | and [ntfs_attr_offs], 0 |
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436 | .scanattr: |
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437 | cmp dword [eax], -1 |
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438 | jz .scandone |
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439 | cmp dword [eax], ecx |
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440 | jz .okattr |
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441 | cmp [ntfs_attr_iBaseRecord], -1 |
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442 | jnz .scancont |
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443 | cmp dword [eax], 0x20 ; $ATTR_LIST |
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444 | jnz .scancont |
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445 | mov [ntfs_attr_list], eax |
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446 | jmp .scancont |
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447 | .okattr: |
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448 | ; ignore named $DATA attributes (aka NTFS streams) |
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449 | cmp ecx, 0x80 |
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450 | jnz @f |
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451 | cmp byte [eax+9], 0 |
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452 | jnz .scancont |
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453 | @@: |
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454 | mov [ntfs_attr_offs], eax |
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455 | .scancont: |
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456 | add eax, [eax+4] |
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457 | jmp .scanattr |
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458 | .continue: |
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459 | pushad |
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460 | and [ntfs_cur_read], 0 |
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461 | .scandone: |
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462 | ; c) Check for required offset and length |
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463 | mov ecx, [ntfs_attr_offs] |
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464 | jecxz .noattr |
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465 | push [ntfs_cur_size] |
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466 | push [ntfs_cur_read] |
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467 | call .doreadattr |
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468 | pop edx |
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469 | pop eax |
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470 | jc @f |
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471 | cmp [ntfs_bCanContinue], 0 |
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472 | jz @f |
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473 | sub edx, [ntfs_cur_read] |
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474 | neg edx |
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475 | shr edx, 9 |
||
476 | sub eax, edx |
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477 | mov [ntfs_cur_size], eax |
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478 | jnz .not_in_cur |
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479 | @@: |
||
480 | popad |
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481 | ret |
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482 | .noattr: |
||
483 | .not_in_cur: |
||
484 | cmp [ntfs_cur_attr], 0x20 |
||
485 | jz @f |
||
486 | mov ecx, [ntfs_attr_list] |
||
487 | test ecx, ecx |
||
488 | jnz .lookattr |
||
489 | .ret_is_attr: |
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490 | cmp [ntfs_attr_offs], 1 ; CF set <=> ntfs_attr_offs == 0 |
||
491 | popad |
||
492 | ret |
||
493 | .lookattr: |
||
494 | ; required attribute or required offset was not found in base record; |
||
495 | ; it may be present in auxiliary records; |
||
496 | ; scan $ATTR_LIST |
||
497 | mov eax, [ntfs_attr_iBaseRecord] |
||
498 | cmp eax, -1 |
||
499 | jz @f |
||
500 | call ntfs_read_file_record |
||
501 | test eax, eax |
||
502 | jz .errret |
||
503 | or [ntfs_attr_iBaseRecord], -1 |
||
504 | @@: |
||
505 | push [ntfs_cur_offs] |
||
506 | push [ntfs_cur_size] |
||
507 | push [ntfs_cur_read] |
||
508 | push [ntfs_cur_buf] |
||
509 | push dword [ntfs_attr_size] |
||
510 | push dword [ntfs_attr_size+4] |
||
511 | or dword [ntfs_attr_size], -1 |
||
512 | or dword [ntfs_attr_size+4], -1 |
||
513 | and [ntfs_cur_offs], 0 |
||
514 | mov [ntfs_cur_size], 2 |
||
515 | and [ntfs_cur_read], 0 |
||
516 | mov eax, ntfs_attrlist_buf |
||
517 | cmp [ntfs_cur_iRecord], 0 |
||
518 | jnz @f |
||
519 | mov eax, ntfs_attrlist_mft_buf |
||
520 | @@: |
||
521 | mov [ntfs_cur_buf], eax |
||
522 | push eax |
||
523 | call .doreadattr |
||
524 | pop esi |
||
525 | mov edx, 1 |
||
526 | pop dword [ntfs_attr_size+4] |
||
527 | pop dword [ntfs_attr_size] |
||
528 | mov ebp, [ntfs_cur_read] |
||
529 | pop [ntfs_cur_buf] |
||
530 | pop [ntfs_cur_read] |
||
531 | pop [ntfs_cur_size] |
||
532 | pop [ntfs_cur_offs] |
||
533 | jc .errret |
||
534 | or edi, -1 |
||
535 | lea ebp, [ebp+esi-1Ah] |
||
536 | .scanliststart: |
||
537 | mov eax, [ntfs_cur_attr] |
||
538 | .scanlist: |
||
539 | cmp esi, ebp |
||
540 | jae .scanlistdone |
||
541 | cmp eax, [esi] |
||
542 | jz @f |
||
543 | .scanlistcont: |
||
544 | movzx ecx, word [esi+4] |
||
545 | add esi, ecx |
||
546 | jmp .scanlist |
||
547 | @@: |
||
548 | ; ignore named $DATA attributes (aka NTFS streams) |
||
549 | cmp eax, 0x80 |
||
550 | jnz @f |
||
551 | cmp byte [esi+6], 0 |
||
552 | jnz .scanlistcont |
||
553 | @@: |
||
554 | push eax |
||
555 | mov eax, [esi+8] |
||
556 | test eax, eax |
||
557 | jnz .testf |
||
558 | mov eax, dword [ntfs_attr_size] |
||
559 | and eax, dword [ntfs_attr_size+4] |
||
560 | cmp eax, -1 |
||
561 | jnz .testfz |
||
562 | ; if attribute is in auxiliary records, its size is defined only in first |
||
563 | mov eax, [esi+10h] |
||
564 | call ntfs_read_file_record |
||
565 | test eax, eax |
||
566 | jnz @f |
||
567 | .errret_pop: |
||
568 | pop eax |
||
569 | jmp .errret |
||
570 | @@: |
||
571 | mov eax, [ntfs_data.frs_buffer] |
||
572 | movzx ecx, word [eax+14h] |
||
573 | add eax, ecx |
||
574 | mov ecx, [ntfs_cur_attr] |
||
575 | @@: |
||
576 | cmp dword [eax], -1 |
||
577 | jz .errret_pop |
||
578 | cmp dword [eax], ecx |
||
579 | jz @f |
||
580 | .l1: |
||
581 | add eax, [eax+4] |
||
582 | jmp @b |
||
583 | @@: |
||
584 | cmp eax, 0x80 |
||
585 | jnz @f |
||
586 | cmp byte [eax+9], 0 |
||
587 | jnz .l1 |
||
588 | @@: |
||
589 | cmp byte [eax+8], 0 |
||
590 | jnz .sdnores |
||
591 | mov eax, [eax+10h] |
||
592 | mov dword [ntfs_attr_size], eax |
||
593 | and dword [ntfs_attr_size+4], 0 |
||
594 | jmp .testfz |
||
595 | .sdnores: |
||
596 | mov ecx, [eax+30h] |
||
597 | mov dword [ntfs_attr_size], ecx |
||
598 | mov ecx, [eax+34h] |
||
599 | mov dword [ntfs_attr_size+4], ecx |
||
600 | .testfz: |
||
601 | xor eax, eax |
||
602 | .testf: |
||
603 | imul eax, [ntfs_data.sectors_per_cluster] |
||
604 | cmp eax, [ntfs_cur_offs] |
||
605 | pop eax |
||
606 | ja @f |
||
607 | mov edi, [esi+10h] ; keep previous iRecord |
||
608 | jmp .scanlistcont |
||
609 | @@: |
||
610 | .scanlistfound: |
||
611 | cmp edi, -1 |
||
612 | jnz @f |
||
613 | popad |
||
614 | ret |
||
615 | @@: |
||
616 | mov eax, [ntfs_cur_iRecord] |
||
617 | mov [ntfs_attr_iBaseRecord], eax |
||
618 | mov eax, edi |
||
619 | jmp .beginfindattr |
||
620 | .sde: |
||
621 | popad |
||
622 | stc |
||
623 | ret |
||
624 | .scanlistdone: |
||
625 | sub ebp, ntfs_attrlist_buf-1Ah |
||
626 | cmp [ntfs_cur_iRecord], 0 |
||
627 | jnz @f |
||
628 | sub ebp, ntfs_attrlist_mft_buf-ntfs_attrlist_buf |
||
629 | @@: |
||
630 | cmp ebp, 0x400 |
||
631 | jnz .scanlistfound |
||
632 | inc edx |
||
633 | push esi edi |
||
634 | mov esi, ntfs_attrlist_buf+0x200 |
||
635 | mov edi, ntfs_attrlist_buf |
||
636 | cmp [ntfs_cur_iRecord], 0 |
||
637 | jnz @f |
||
638 | mov esi, ntfs_attrlist_mft_buf+0x200 |
||
639 | mov edi, ntfs_attrlist_mft_buf |
||
640 | @@: |
||
641 | mov ecx, 0x200/4 |
||
642 | rep movsd |
||
643 | mov eax, edi |
||
644 | pop edi esi |
||
645 | sub esi, 0x200 |
||
646 | push [ntfs_cur_offs] |
||
647 | push [ntfs_cur_size] |
||
648 | push [ntfs_cur_read] |
||
649 | push [ntfs_cur_buf] |
||
650 | push dword [ntfs_attr_size] |
||
651 | push dword [ntfs_attr_size+4] |
||
652 | or dword [ntfs_attr_size], -1 |
||
653 | or dword [ntfs_attr_size+4], -1 |
||
654 | mov [ntfs_cur_offs], edx |
||
655 | mov [ntfs_cur_size], 1 |
||
656 | and [ntfs_cur_read], 0 |
||
657 | mov [ntfs_cur_buf], eax |
||
658 | mov ecx, [ntfs_attr_list] |
||
659 | push esi edx |
||
660 | call .doreadattr |
||
661 | pop edx esi |
||
662 | mov ebp, [ntfs_cur_read] |
||
663 | pop dword [ntfs_attr_size+4] |
||
664 | pop dword [ntfs_attr_size] |
||
665 | pop [ntfs_cur_buf] |
||
666 | pop [ntfs_cur_read] |
||
667 | pop [ntfs_cur_size] |
||
668 | pop [ntfs_cur_offs] |
||
669 | jc .errret |
||
670 | add ebp, ntfs_attrlist_buf+0x200-0x1A |
||
671 | cmp [ntfs_cur_iRecord], 0 |
||
672 | jnz .scanliststart |
||
673 | add ebp, ntfs_attrlist_mft_buf-ntfs_attrlist_buf |
||
674 | jmp .scanliststart |
||
675 | |||
676 | .doreadattr: |
||
677 | mov [ntfs_bCanContinue], 0 |
||
678 | cmp byte [ecx+8], 0 |
||
679 | jnz .nonresident |
||
680 | mov eax, [ecx+10h] ; length |
||
681 | mov esi, eax |
||
682 | mov edx, [ntfs_cur_offs] |
||
683 | shr eax, 9 |
||
684 | cmp eax, edx |
||
685 | jb .okret |
||
686 | shl edx, 9 |
||
687 | sub esi, edx |
||
688 | movzx eax, word [ecx+14h] |
||
689 | add edx, eax |
||
690 | add edx, ecx ; edx -> data |
||
691 | mov eax, [ntfs_cur_size] |
||
692 | cmp eax, (0xFFFFFFFF shr 9)+1 |
||
693 | jbe @f |
||
694 | mov eax, (0xFFFFFFFF shr 9)+1 |
||
695 | @@: |
||
696 | shl eax, 9 |
||
697 | cmp eax, esi |
||
698 | jbe @f |
||
699 | mov eax, esi |
||
700 | @@: |
||
701 | ; eax = length, edx -> data |
||
702 | mov [ntfs_cur_read], eax |
||
703 | mov ecx, eax |
||
704 | mov eax, edx |
||
705 | mov ebx, [ntfs_cur_buf] |
||
706 | call memmove |
||
707 | and [ntfs_cur_size], 0 ; CF=0 |
||
708 | ret |
||
709 | .nonresident: |
||
710 | ; Not all auxiliary records contain correct FileSize info |
||
711 | mov eax, dword [ntfs_attr_size] |
||
712 | mov edx, dword [ntfs_attr_size+4] |
||
713 | push eax |
||
714 | and eax, edx |
||
715 | cmp eax, -1 |
||
716 | pop eax |
||
717 | jnz @f |
||
718 | mov eax, [ecx+30h] ; FileSize |
||
719 | mov edx, [ecx+34h] |
||
720 | mov dword [ntfs_attr_size], eax |
||
721 | mov dword [ntfs_attr_size+4], edx |
||
722 | @@: |
||
723 | add eax, 0x1FF |
||
724 | adc edx, 0 |
||
725 | shrd eax, edx, 9 |
||
726 | sub eax, [ntfs_cur_offs] |
||
727 | ja @f |
||
728 | ; return with nothing read |
||
729 | and [ntfs_cur_size], 0 |
||
730 | .okret: |
||
731 | clc |
||
732 | ret |
||
733 | @@: |
||
734 | ; reduce read length |
||
735 | and [ntfs_cur_tail], 0 |
||
736 | cmp [ntfs_cur_size], eax |
||
737 | jb @f |
||
738 | mov [ntfs_cur_size], eax |
||
739 | mov eax, dword [ntfs_attr_size] |
||
740 | and eax, 0x1FF |
||
741 | mov [ntfs_cur_tail], eax |
||
742 | @@: |
||
743 | cmp [ntfs_cur_size], 0 |
||
744 | jz .okret |
||
745 | mov eax, [ntfs_cur_offs] |
||
746 | xor edx, edx |
||
747 | div [ntfs_data.sectors_per_cluster] |
||
748 | sub eax, [ecx+10h] ; first_vbo |
||
749 | jb .okret |
||
750 | ; eax = cluster, edx = starting sector |
||
751 | sub esp, 10h |
||
752 | movzx esi, word [ecx+20h] ; mcb_info_ofs |
||
753 | add esi, ecx |
||
754 | xor ebp, ebp |
||
755 | .readloop: |
||
756 | call ntfs_decode_mcb_entry |
||
757 | jnc .break |
||
758 | add ebp, [esp+8] |
||
759 | sub eax, [esp] |
||
760 | jae .readloop |
||
761 | push ecx |
||
762 | push eax |
||
763 | add eax, [esp+8] |
||
764 | add eax, ebp |
||
765 | imul eax, [ntfs_data.sectors_per_cluster] |
||
766 | add eax, edx |
||
767 | add eax, [PARTITION_START] |
||
768 | pop ecx |
||
769 | neg ecx |
||
770 | imul ecx, [ntfs_data.sectors_per_cluster] |
||
771 | sub ecx, edx |
||
772 | cmp ecx, [ntfs_cur_size] |
||
773 | jb @f |
||
774 | mov ecx, [ntfs_cur_size] |
||
775 | @@: |
||
776 | mov ebx, [ntfs_cur_buf] |
||
777 | @@: |
||
778 | call hd_read |
||
779 | cmp [hd_error], 0 |
||
780 | jnz .errread2 |
||
781 | add ebx, 0x200 |
||
782 | mov [ntfs_cur_buf], ebx |
||
783 | inc eax |
||
784 | add [ntfs_cur_read], 0x200 |
||
785 | dec [ntfs_cur_size] |
||
786 | inc [ntfs_cur_offs] |
||
787 | loop @b |
||
788 | pop ecx |
||
789 | xor eax, eax |
||
790 | xor edx, edx |
||
791 | cmp [ntfs_cur_size], 0 |
||
792 | jnz .readloop |
||
793 | add esp, 10h |
||
794 | mov eax, [ntfs_cur_tail] |
||
795 | test eax, eax |
||
796 | jz @f |
||
797 | sub eax, 0x200 |
||
798 | add [ntfs_cur_read], eax |
||
799 | @@: |
||
800 | clc |
||
801 | ret |
||
802 | .errread2: |
||
803 | pop ecx |
||
804 | add esp, 10h |
||
805 | stc |
||
806 | ret |
||
807 | .break: |
||
808 | add esp, 10h ; CF=0 |
||
809 | mov [ntfs_bCanContinue], 1 |
||
810 | ret |
||
811 | |||
812 | ntfs_read_file_record: |
||
813 | ; in: eax=iRecord |
||
814 | ; out: [ntfs_data.frs_buffer] contains information |
||
815 | ; eax=0 - failed, eax=1 - success |
||
816 | ; Read attr $DATA of $Mft, starting from eax*[ntfs_data.frs_size] |
||
817 | push ecx edx |
||
818 | mov ecx, [ntfs_data.frs_size] |
||
819 | mul ecx |
||
820 | shrd eax, edx, 9 |
||
821 | shr edx, 9 |
||
822 | jnz .err |
||
823 | push [ntfs_attr_iRecord] |
||
824 | push [ntfs_attr_iBaseRecord] |
||
825 | push [ntfs_attr_offs] |
||
826 | push [ntfs_attr_list] |
||
827 | push dword [ntfs_attr_size+4] |
||
828 | push dword [ntfs_attr_size] |
||
829 | push [ntfs_cur_iRecord] |
||
830 | push [ntfs_cur_attr] |
||
831 | push [ntfs_cur_offs] |
||
832 | push [ntfs_cur_size] |
||
833 | push [ntfs_cur_buf] |
||
834 | push [ntfs_cur_read] |
||
835 | mov [ntfs_cur_attr], 0x80 ; $DATA |
||
836 | and [ntfs_cur_iRecord], 0 ; $Mft |
||
837 | mov [ntfs_cur_offs], eax |
||
838 | shr ecx, 9 |
||
839 | mov [ntfs_cur_size], ecx |
||
840 | mov eax, [ntfs_data.frs_buffer] |
||
841 | mov [ntfs_cur_buf], eax |
||
842 | call ntfs_read_attr |
||
843 | mov eax, [ntfs_cur_read] |
||
844 | pop [ntfs_cur_read] |
||
845 | pop [ntfs_cur_buf] |
||
846 | pop [ntfs_cur_size] |
||
847 | pop [ntfs_cur_offs] |
||
848 | pop [ntfs_cur_attr] |
||
849 | pop [ntfs_cur_iRecord] |
||
850 | pop dword [ntfs_attr_size] |
||
851 | pop dword [ntfs_attr_size+4] |
||
852 | pop [ntfs_attr_list] |
||
853 | pop [ntfs_attr_offs] |
||
854 | pop [ntfs_attr_iBaseRecord] |
||
855 | pop [ntfs_attr_iRecord] |
||
856 | pop edx ecx |
||
857 | jc .errret |
||
858 | cmp eax, [ntfs_data.frs_size] |
||
859 | jnz .errret |
||
860 | mov eax, [ntfs_data.frs_buffer] |
||
861 | cmp dword [eax], 'FILE' |
||
862 | jnz .errret |
||
863 | push ebx |
||
864 | mov ebx, eax |
||
865 | call ntfs_restore_usa_frs |
||
866 | pop ebx |
||
867 | setnc al |
||
868 | movzx eax, al |
||
869 | .ret: |
||
870 | ret |
||
871 | .err: |
||
872 | pop edx ecx |
||
873 | .errret: |
||
874 | xor eax, eax |
||
875 | ret |
||
876 | |||
877 | ntfs_restore_usa_frs: |
||
878 | mov eax, [ntfs_data.frs_size] |
||
879 | ntfs_restore_usa: |
||
880 | pushad |
||
881 | shr eax, 9 |
||
882 | mov ecx, eax |
||
883 | inc eax |
||
884 | cmp [ebx+6], ax |
||
885 | jnz .err |
||
886 | movzx eax, word [ebx+4] |
||
887 | lea esi, [eax+ebx] |
||
888 | lodsw |
||
889 | mov edx, eax |
||
890 | lea edi, [ebx+0x1FE] |
||
891 | @@: |
||
892 | cmp [edi], dx |
||
893 | jnz .err |
||
894 | lodsw |
||
895 | stosw |
||
896 | add edi, 0x1FE |
||
897 | loop @b |
||
898 | popad |
||
899 | clc |
||
900 | ret |
||
901 | .err: |
||
902 | popad |
||
903 | stc |
||
904 | ret |
||
905 | |||
906 | ntfs_decode_mcb_entry: |
||
907 | push eax ecx edi |
||
908 | lea edi, [esp+16] |
||
909 | xor eax, eax |
||
910 | lodsb |
||
911 | test al, al |
||
912 | jz .end |
||
913 | mov ecx, eax |
||
914 | and ecx, 0xF |
||
915 | cmp ecx, 8 |
||
916 | ja .end |
||
917 | push ecx |
||
918 | rep movsb |
||
919 | pop ecx |
||
920 | sub ecx, 8 |
||
921 | neg ecx |
||
922 | cmp byte [esi-1], 80h |
||
923 | jae .end |
||
924 | push eax |
||
925 | xor eax, eax |
||
926 | rep stosb |
||
927 | pop ecx |
||
928 | shr ecx, 4 |
||
929 | cmp ecx, 8 |
||
930 | ja .end |
||
931 | push ecx |
||
932 | rep movsb |
||
933 | pop ecx |
||
934 | sub ecx, 8 |
||
935 | neg ecx |
||
936 | cmp byte [esi-1], 80h |
||
937 | cmc |
||
938 | sbb eax, eax |
||
939 | rep stosb |
||
940 | stc |
||
941 | .end: |
||
942 | pop edi ecx eax |
||
943 | ret |
||
944 | |||
945 | unichar_toupper: |
||
946 | push eax |
||
947 | call uni2ansi_char |
||
948 | cmp al, '_' |
||
949 | jz .unk |
||
950 | add esp, 4 |
||
1504 | diamond | 951 | call char_toupper |
952 | jmp ansi2uni_char |
||
953 | .unk: |
||
954 | pop eax |
||
955 | ret |
||
2288 | clevermous | 956 | |
957 | ntfs_find_lfn: |
||
958 | ; in: esi+ebp -> name |
||
959 | ; out: CF=1 - file not found |
||
960 | ; else CF=0, [ntfs_cur_iRecord] valid, eax->record in parent directory |
||
961 | mov [ntfs_cur_iRecord], 5 ; start parse from root cluster |
||
962 | .doit2: |
||
963 | mov [ntfs_cur_attr], 0x90 ; $INDEX_ROOT |
||
964 | and [ntfs_cur_offs], 0 |
||
965 | mov eax, [ntfs_data.cur_index_size] |
||
966 | mov [ntfs_cur_size], eax |
||
967 | mov eax, [ntfs_data.cur_index_buf] |
||
968 | mov [ntfs_cur_buf], eax |
||
969 | call ntfs_read_attr |
||
970 | jnc @f |
||
971 | .ret: |
||
972 | ret |
||
973 | @@: |
||
974 | cmp [ntfs_cur_read], 0x20 |
||
975 | jc .ret |
||
976 | pushad |
||
977 | mov esi, [ntfs_data.cur_index_buf] |
||
978 | mov eax, [esi+14h] |
||
979 | add eax, 10h |
||
980 | cmp [ntfs_cur_read], eax |
||
981 | jae .readok1 |
||
982 | add eax, 1FFh |
||
983 | shr eax, 9 |
||
984 | cmp eax, [ntfs_data.cur_index_size] |
||
985 | ja @f |
||
986 | .stc_ret: |
||
987 | popad |
||
988 | stc |
||
989 | ret |
||
990 | @@: |
||
991 | ; reallocate |
||
992 | push eax |
||
993 | push [ntfs_data.cur_index_buf] |
||
994 | call kernel_free |
||
995 | pop eax |
||
996 | mov [ntfs_data.cur_index_size], eax |
||
997 | push eax |
||
998 | call kernel_alloc |
||
999 | test eax, eax |
||
1000 | jnz @f |
||
1001 | and [ntfs_data.cur_index_size], 0 |
||
1002 | and [ntfs_data.cur_index_buf], 0 |
||
1003 | jmp .stc_ret |
||
1004 | @@: |
||
1005 | mov [ntfs_data.cur_index_buf], eax |
||
1006 | popad |
||
1007 | jmp .doit2 |
||
1008 | .readok1: |
||
1009 | mov ebp, [esi+8] ; subnode_size |
||
1010 | shr ebp, 9 |
||
1011 | cmp ebp, [ntfs_data.cur_index_size] |
||
1012 | jbe .ok2 |
||
1013 | push esi ebp |
||
1014 | push ebp |
||
1015 | call kernel_alloc |
||
1016 | pop ebp esi |
||
1017 | test eax, eax |
||
1018 | jz .stc_ret |
||
1019 | mov edi, eax |
||
1020 | mov ecx, [ntfs_data.cur_index_size] |
||
1021 | shl ecx, 9-2 |
||
1022 | rep movsd |
||
1023 | mov esi, eax |
||
1024 | mov [ntfs_data.cur_index_size], ebp |
||
1025 | push esi ebp |
||
1026 | push [ntfs_data.cur_index_buf] |
||
1027 | call kernel_free |
||
1028 | pop ebp esi |
||
1029 | mov [ntfs_data.cur_index_buf], esi |
||
1030 | .ok2: |
||
1031 | add esi, 10h |
||
1032 | mov edi, [esp+4] |
||
1033 | ; edi -> name, esi -> current index data, ebp = subnode size |
||
1034 | .scanloop: |
||
1035 | add esi, [esi] |
||
1036 | .scanloopint: |
||
1037 | test byte [esi+0Ch], 2 |
||
1038 | jnz .subnode |
||
1039 | push esi |
||
1040 | add esi, 0x52 |
||
1041 | movzx ecx, byte [esi-2] |
||
1042 | push edi |
||
1043 | @@: |
||
1044 | lodsw |
||
1045 | call unichar_toupper |
||
1046 | push eax |
||
1047 | mov al, [edi] |
||
1048 | inc edi |
||
1049 | cmp al, '/' |
||
1050 | jz .slash |
||
1051 | call char_toupper |
||
1052 | call ansi2uni_char |
||
1053 | cmp ax, [esp] |
||
1054 | pop eax |
||
1055 | loopz @b |
||
1056 | jz .found |
||
1057 | pop edi |
||
1058 | pop esi |
||
1059 | jb .subnode |
||
1060 | .scanloopcont: |
||
1061 | movzx eax, word [esi+8] |
||
1062 | add esi, eax |
||
1063 | jmp .scanloopint |
||
1064 | .slash: |
||
1065 | pop eax |
||
1066 | pop edi |
||
1067 | pop esi |
||
1068 | .subnode: |
||
1069 | test byte [esi+0Ch], 1 |
||
1070 | jz .notfound |
||
1071 | movzx eax, word [esi+8] |
||
1072 | mov eax, [esi+eax-8] |
||
1073 | mul [ntfs_data.sectors_per_cluster] |
||
1074 | mov [ntfs_cur_offs], eax |
||
1075 | mov [ntfs_cur_attr], 0xA0 ; $INDEX_ALLOCATION |
||
1076 | mov [ntfs_cur_size], ebp |
||
1077 | mov eax, [ntfs_data.cur_index_buf] |
||
1078 | mov esi, eax |
||
1079 | mov [ntfs_cur_buf], eax |
||
1080 | call ntfs_read_attr |
||
1081 | mov eax, ebp |
||
1082 | shl eax, 9 |
||
1083 | cmp [ntfs_cur_read], eax |
||
1084 | jnz .notfound |
||
1085 | cmp dword [esi], 'INDX' |
||
1086 | jnz .notfound |
||
1087 | mov ebx, esi |
||
1088 | call ntfs_restore_usa |
||
1089 | jc .notfound |
||
1090 | add esi, 0x18 |
||
1091 | jmp .scanloop |
||
1092 | .notfound: |
||
1093 | popad |
||
1094 | stc |
||
1095 | ret |
||
1096 | .found: |
||
1097 | cmp byte [edi], 0 |
||
1098 | jz .done |
||
1099 | cmp byte [edi], '/' |
||
1100 | jz .next |
||
1101 | pop edi |
||
1102 | pop esi |
||
1103 | jmp .scanloopcont |
||
1104 | .done: |
||
1105 | .next: |
||
1106 | pop esi |
||
1107 | pop esi |
||
1108 | mov eax, [esi] |
||
1109 | mov [ntfs_cur_iRecord], eax |
||
1110 | mov [esp+1Ch], esi |
||
1111 | mov [esp+4], edi |
||
1112 | popad |
||
1113 | inc esi |
||
1114 | cmp byte [esi-1], 0 |
||
1115 | jnz .doit2 |
||
1116 | test ebp, ebp |
||
1117 | jz @f |
||
1118 | mov esi, ebp |
||
1119 | xor ebp, ebp |
||
1120 | jmp .doit2 |
||
1121 | @@: |
||
1122 | ret |
||
1123 | |||
1124 | ;---------------------------------------------------------------- |
||
1125 | ; |
||
1126 | ; ntfs_HdRead - read NTFS hard disk |
||
1127 | ; |
||
1128 | ; esi points to filename |
||
1129 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
||
1130 | ; may be ebx=0 - start from first byte |
||
1131 | ; ecx number of bytes to read, 0+ |
||
1132 | ; edx mem location to return data |
||
1133 | ; |
||
1134 | ; ret ebx = bytes read or 0xffffffff file not found |
||
1135 | ; eax = 0 ok read or other = errormsg |
||
1136 | ; |
||
1137 | ;-------------------------------------------------------------- |
||
1138 | ntfs_HdRead: |
||
1139 | cmp byte [esi], 0 |
||
1140 | jnz @f |
||
1141 | or ebx, -1 |
||
3598 | clevermous | 1142 | movi eax, ERROR_ACCESS_DENIED |
2288 | clevermous | 1143 | ret |
1144 | @@: |
||
1145 | call ntfs_find_lfn |
||
1146 | jnc .found |
||
1147 | or ebx, -1 |
||
3598 | clevermous | 1148 | movi eax, ERROR_FILE_NOT_FOUND |
2288 | clevermous | 1149 | ret |
1150 | .found: |
||
1151 | mov [ntfs_cur_attr], 0x80 ; $DATA |
||
1152 | and [ntfs_cur_offs], 0 |
||
1153 | and [ntfs_cur_size], 0 |
||
1154 | call ntfs_read_attr |
||
1155 | jnc @f |
||
1156 | or ebx, -1 |
||
3598 | clevermous | 1157 | movi eax, ERROR_ACCESS_DENIED |
2288 | clevermous | 1158 | ret |
1159 | @@: |
||
1160 | pushad |
||
1161 | and dword [esp+10h], 0 |
||
1162 | xor eax, eax |
||
1163 | test ebx, ebx |
||
1164 | jz .zero1 |
||
1165 | cmp dword [ebx+4], 0x200 |
||
1166 | jb @f |
||
1167 | .eof0: |
||
1168 | popad |
||
1169 | xor ebx, ebx |
||
1170 | .eof: |
||
3598 | clevermous | 1171 | movi eax, ERROR_END_OF_FILE |
2288 | clevermous | 1172 | ret |
1173 | @@: |
||
1174 | mov eax, [ebx] |
||
1175 | test eax, 0x1FF |
||
1176 | jz .alignedstart |
||
1177 | push edx |
||
1178 | mov edx, [ebx+4] |
||
1179 | shrd eax, edx, 9 |
||
1400 | turbanoff | 1180 | pop edx |
2288 | clevermous | 1181 | mov [ntfs_cur_offs], eax |
1182 | mov [ntfs_cur_size], 1 |
||
1183 | mov [ntfs_cur_buf], ntfs_bitmap_buf |
||
1184 | call ntfs_read_attr.continue |
||
1185 | mov eax, [ebx] |
||
1186 | and eax, 0x1FF |
||
1187 | lea esi, [ntfs_bitmap_buf+eax] |
||
1188 | sub eax, [ntfs_cur_read] |
||
1189 | jae .eof0 |
||
1190 | neg eax |
||
1191 | push ecx |
||
1192 | cmp ecx, eax |
||
1193 | jb @f |
||
1194 | mov ecx, eax |
||
1195 | @@: |
||
1196 | mov [esp+10h+4], ecx |
||
1197 | mov edi, edx |
||
1198 | rep movsb |
||
1199 | mov edx, edi |
||
1200 | pop ecx |
||
1201 | sub ecx, [esp+10h] |
||
1202 | jnz @f |
||
1203 | .retok: |
||
1204 | popad |
||
1205 | xor eax, eax |
||
1400 | turbanoff | 1206 | ret |
2288 | clevermous | 1207 | @@: |
1208 | cmp [ntfs_cur_read], 0x200 |
||
1209 | jz .alignedstart |
||
1210 | .eof_ebx: |
||
1211 | popad |
||
1212 | jmp .eof |
||
1213 | .alignedstart: |
||
1214 | mov eax, [ebx] |
||
1215 | push edx |
||
1216 | mov edx, [ebx+4] |
||
1217 | add eax, 511 |
||
1218 | adc edx, 0 |
||
1219 | shrd eax, edx, 9 |
||
1220 | pop edx |
||
1221 | .zero1: |
||
1222 | mov [ntfs_cur_offs], eax |
||
1223 | mov [ntfs_cur_buf], edx |
||
1224 | mov eax, ecx |
||
1225 | shr eax, 9 |
||
1226 | mov [ntfs_cur_size], eax |
||
1227 | add eax, [ntfs_cur_offs] |
||
1228 | push eax |
||
1229 | call ntfs_read_attr.continue |
||
1230 | pop [ntfs_cur_offs] |
||
1231 | mov eax, [ntfs_cur_read] |
||
1232 | add [esp+10h], eax |
||
1233 | mov eax, ecx |
||
1234 | and eax, not 0x1FF |
||
1235 | cmp [ntfs_cur_read], eax |
||
1236 | jnz .eof_ebx |
||
1237 | and ecx, 0x1FF |
||
1238 | jz .retok |
||
1239 | add edx, [ntfs_cur_read] |
||
1240 | mov [ntfs_cur_size], 1 |
||
1241 | mov [ntfs_cur_buf], ntfs_bitmap_buf |
||
1242 | call ntfs_read_attr.continue |
||
1243 | cmp [ntfs_cur_read], ecx |
||
1244 | jb @f |
||
1245 | mov [ntfs_cur_read], ecx |
||
1246 | @@: |
||
1247 | xchg ecx, [ntfs_cur_read] |
||
1248 | push ecx |
||
1249 | mov edi, edx |
||
1250 | mov esi, ntfs_bitmap_buf |
||
1251 | add [esp+10h+4], ecx |
||
1252 | rep movsb |
||
1253 | pop ecx |
||
1254 | xor eax, eax |
||
1255 | cmp ecx, [ntfs_cur_read] |
||
1256 | jz @f |
||
1257 | mov al, ERROR_END_OF_FILE |
||
1258 | @@: |
||
1259 | mov [esp+1Ch], eax |
||
1260 | popad |
||
1261 | ret |
||
1400 | turbanoff | 1262 | |
2288 | clevermous | 1263 | ;---------------------------------------------------------------- |
1264 | ; |
||
1265 | ; ntfs_HdReadFolder - read NTFS hard disk folder |
||
1266 | ; |
||
1267 | ; esi points to filename |
||
1268 | ; ebx pointer to structure 32-bit number = first wanted block, 0+ |
||
1269 | ; & flags (bitfields) |
||
1270 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
||
1271 | ; ecx number of blocks to read, 0+ |
||
1272 | ; edx mem location to return data |
||
1273 | ; |
||
1274 | ; ret ebx = blocks read or 0xffffffff folder not found |
||
1275 | ; eax = 0 ok read or other = errormsg |
||
1276 | ; |
||
1277 | ;-------------------------------------------------------------- |
||
1278 | ntfs_HdReadFolder: |
||
1279 | mov eax, 5 ; root cluster |
||
1280 | cmp byte [esi], 0 |
||
1281 | jz .doit |
||
1282 | call ntfs_find_lfn |
||
1283 | jnc .doit2 |
||
1284 | .notfound: |
||
1285 | or ebx, -1 |
||
1286 | push ERROR_FILE_NOT_FOUND |
||
1287 | .pop_ret: |
||
1288 | pop eax |
||
1289 | ret |
||
1290 | .doit: |
||
1291 | mov [ntfs_cur_iRecord], eax |
||
1292 | .doit2: |
||
1293 | mov [ntfs_cur_attr], 0x10 ; $STANDARD_INFORMATION |
||
1294 | and [ntfs_cur_offs], 0 |
||
1295 | mov [ntfs_cur_size], 1 |
||
1296 | mov [ntfs_cur_buf], ntfs_bitmap_buf |
||
1297 | call ntfs_read_attr |
||
1298 | jc .notfound |
||
1299 | mov [ntfs_cur_attr], 0x90 ; $INDEX_ROOT |
||
1300 | and [ntfs_cur_offs], 0 |
||
1301 | mov eax, [ntfs_data.cur_index_size] |
||
1302 | mov [ntfs_cur_size], eax |
||
1303 | mov eax, [ntfs_data.cur_index_buf] |
||
1304 | mov [ntfs_cur_buf], eax |
||
1305 | call ntfs_read_attr |
||
1306 | jnc .ok |
||
1307 | cmp [hd_error], 0 |
||
1308 | jz .notfound |
||
1309 | or ebx, -1 |
||
1310 | push 11 |
||
1311 | jmp .pop_ret |
||
1312 | .ok: |
||
1313 | cmp [ntfs_cur_read], 0x20 |
||
1314 | jae @f |
||
1315 | or ebx, -1 |
||
1316 | .fserr: |
||
1317 | push ERROR_FAT_TABLE |
||
1318 | jmp .pop_ret |
||
1319 | @@: |
||
1320 | pushad |
||
1321 | mov esi, [ntfs_data.cur_index_buf] |
||
1322 | mov eax, [esi+14h] |
||
1323 | add eax, 10h |
||
1324 | cmp [ntfs_cur_read], eax |
||
1325 | jae .readok1 |
||
1326 | add eax, 1FFh |
||
1327 | shr eax, 9 |
||
1328 | cmp eax, [ntfs_data.cur_index_size] |
||
1329 | ja @f |
||
1330 | popad |
||
1331 | jmp .fserr |
||
1332 | @@: |
||
1333 | ; reallocate |
||
1334 | push eax |
||
1335 | push [ntfs_data.cur_index_buf] |
||
1336 | call kernel_free |
||
1337 | pop eax |
||
1338 | mov [ntfs_data.cur_index_size], eax |
||
1339 | push eax |
||
1340 | call kernel_alloc |
||
1341 | test eax, eax |
||
1342 | jnz @f |
||
1343 | and [ntfs_data.cur_index_size], 0 |
||
1344 | and [ntfs_data.cur_index_buf], 0 |
||
1345 | .nomem: |
||
1346 | popad |
||
1347 | or ebx, -1 |
||
3598 | clevermous | 1348 | movi eax, 12 |
2288 | clevermous | 1349 | ret |
1350 | @@: |
||
1351 | mov [ntfs_data.cur_index_buf], eax |
||
1352 | popad |
||
1353 | jmp .doit2 |
||
1354 | .readok1: |
||
1355 | mov ebp, [esi+8] ; subnode_size |
||
1356 | shr ebp, 9 |
||
1357 | cmp ebp, [ntfs_data.cur_index_size] |
||
1358 | jbe .ok2 |
||
1359 | push esi ebp |
||
1360 | push ebp |
||
1361 | call kernel_alloc |
||
1362 | pop ebp esi |
||
1363 | test eax, eax |
||
1364 | jz .nomem |
||
1365 | mov edi, eax |
||
1366 | mov ecx, [ntfs_data.cur_index_size] |
||
1367 | shl ecx, 9-2 |
||
1368 | rep movsd |
||
1369 | mov esi, eax |
||
1370 | mov [ntfs_data.cur_index_size], ebp |
||
1371 | push esi ebp |
||
1372 | push [ntfs_data.cur_index_buf] |
||
1373 | call kernel_free |
||
1374 | pop ebp esi |
||
1375 | mov [ntfs_data.cur_index_buf], esi |
||
1376 | .ok2: |
||
1377 | add esi, 10h |
||
1378 | mov ebx, [esp+10h] |
||
1379 | mov edx, [esp+14h] |
||
1380 | push dword [ebx+4] ; read ANSI/UNICODE name |
||
1381 | mov ebx, [ebx] |
||
1382 | ; init header |
||
1383 | mov edi, edx |
||
1384 | mov ecx, 32/4 |
||
1385 | xor eax, eax |
||
1386 | rep stosd |
||
1387 | mov byte [edx], 1 ; version |
||
1388 | mov ecx, [esp+4+18h] |
||
1389 | push edx |
||
1390 | mov edx, esp |
||
1391 | ; edi -> BDFE, esi -> current index data, ebp = subnode size, ebx = first wanted block, |
||
1392 | ; ecx = number of blocks to read |
||
1393 | ; edx -> parameters block: dd |
||
1394 | cmp [ntfs_cur_iRecord], 5 |
||
1395 | jz .skip_specials |
||
1396 | ; dot and dotdot entries |
||
1397 | push esi |
||
1398 | xor esi, esi |
||
1399 | call .add_special_entry |
||
1400 | inc esi |
||
1401 | call .add_special_entry |
||
1402 | pop esi |
||
1403 | .skip_specials: |
||
1404 | ; at first, dump index root |
||
1405 | add esi, [esi] |
||
1406 | .dump_root: |
||
1407 | test byte [esi+0Ch], 2 |
||
1408 | jnz .dump_root_done |
||
1409 | call .add_entry |
||
1410 | movzx eax, word [esi+8] |
||
1411 | add esi, eax |
||
1412 | jmp .dump_root |
||
1413 | .dump_root_done: |
||
1414 | ; now dump all subnodes |
||
1415 | push ecx edi |
||
1416 | mov edi, ntfs_bitmap_buf |
||
1417 | mov [ntfs_cur_buf], edi |
||
1418 | mov ecx, 0x400/4 |
||
1419 | xor eax, eax |
||
1420 | rep stosd |
||
1421 | mov [ntfs_cur_attr], 0xB0 ; $BITMAP |
||
1422 | and [ntfs_cur_offs], 0 |
||
1423 | mov [ntfs_cur_size], 2 |
||
1424 | call ntfs_read_attr |
||
1425 | pop edi ecx |
||
1426 | push 0 ; save offset in $BITMAP attribute |
||
1427 | and [ntfs_cur_offs], 0 |
||
1428 | .dumploop: |
||
1429 | mov [ntfs_cur_attr], 0xA0 |
||
1430 | mov [ntfs_cur_size], ebp |
||
1431 | mov eax, [ntfs_data.cur_index_buf] |
||
1432 | mov esi, eax |
||
1433 | mov [ntfs_cur_buf], eax |
||
1434 | push [ntfs_cur_offs] |
||
1435 | mov eax, [ntfs_cur_offs] |
||
1436 | imul eax, ebp |
||
1437 | mov [ntfs_cur_offs], eax |
||
1438 | call ntfs_read_attr |
||
1439 | pop [ntfs_cur_offs] |
||
1440 | mov eax, ebp |
||
1441 | shl eax, 9 |
||
1442 | cmp [ntfs_cur_read], eax |
||
1443 | jnz .done |
||
1444 | push eax |
||
1445 | mov eax, [ntfs_cur_offs] |
||
1446 | and eax, 0x400*8-1 |
||
1447 | bt dword [ntfs_bitmap_buf], eax |
||
1448 | pop eax |
||
1449 | jnc .dump_subnode_done |
||
1450 | cmp dword [esi], 'INDX' |
||
1451 | jnz .dump_subnode_done |
||
1452 | push ebx |
||
1453 | mov ebx, esi |
||
1454 | call ntfs_restore_usa |
||
1455 | pop ebx |
||
1456 | jc .dump_subnode_done |
||
1457 | add esi, 0x18 |
||
1458 | add esi, [esi] |
||
1459 | .dump_subnode: |
||
1460 | test byte [esi+0Ch], 2 |
||
1461 | jnz .dump_subnode_done |
||
1462 | call .add_entry |
||
1463 | movzx eax, word [esi+8] |
||
1464 | add esi, eax |
||
1465 | jmp .dump_subnode |
||
1466 | .dump_subnode_done: |
||
1467 | inc [ntfs_cur_offs] |
||
1468 | test [ntfs_cur_offs], 0x400*8-1 |
||
1469 | jnz .dumploop |
||
1470 | mov [ntfs_cur_attr], 0xB0 |
||
1471 | push ecx edi |
||
1472 | mov edi, ntfs_bitmap_buf |
||
1473 | mov [ntfs_cur_buf], edi |
||
1474 | mov ecx, 0x400/4 |
||
1475 | xor eax, eax |
||
1476 | rep stosd |
||
1477 | pop edi ecx |
||
1478 | pop eax |
||
1479 | push [ntfs_cur_offs] |
||
1480 | inc eax |
||
1481 | mov [ntfs_cur_offs], eax |
||
1482 | mov [ntfs_cur_size], 2 |
||
1483 | push eax |
||
1484 | call ntfs_read_attr |
||
1485 | pop eax |
||
1486 | pop [ntfs_cur_offs] |
||
1487 | push eax |
||
1488 | jmp .dumploop |
||
1489 | .done: |
||
1490 | pop eax |
||
1491 | pop edx |
||
1492 | mov ebx, [edx+4] |
||
1493 | pop edx |
||
1494 | xor eax, eax |
||
1495 | dec ecx |
||
1496 | js @f |
||
1497 | mov al, ERROR_END_OF_FILE |
||
1498 | @@: |
||
1499 | mov [esp+1Ch], eax |
||
1500 | mov [esp+10h], ebx |
||
1501 | popad |
||
1502 | ret |
||
1503 | |||
1504 | .add_special_entry: |
||
1505 | mov eax, [edx] |
||
1506 | inc dword [eax+8] ; new file found |
||
1507 | dec ebx |
||
1508 | jns .ret |
||
1509 | dec ecx |
||
1510 | js .ret |
||
1511 | inc dword [eax+4] ; new file block copied |
||
1512 | mov eax, [edx+4] |
||
1513 | mov [edi+4], eax |
||
1514 | ; mov eax, dword [ntfs_bitmap_buf+0x20] |
||
1515 | ; or al, 0x10 |
||
1516 | mov eax, 0x10 |
||
1517 | stosd |
||
1518 | scasd |
||
1519 | push edx |
||
1520 | mov eax, dword [ntfs_bitmap_buf] |
||
1521 | mov edx, dword [ntfs_bitmap_buf+4] |
||
1522 | call ntfs_datetime_to_bdfe |
||
1523 | mov eax, dword [ntfs_bitmap_buf+0x18] |
||
1524 | mov edx, dword [ntfs_bitmap_buf+0x1C] |
||
1525 | call ntfs_datetime_to_bdfe |
||
1526 | mov eax, dword [ntfs_bitmap_buf+8] |
||
1527 | mov edx, dword [ntfs_bitmap_buf+0xC] |
||
1528 | call ntfs_datetime_to_bdfe |
||
1529 | pop edx |
||
1530 | xor eax, eax |
||
1531 | stosd |
||
1532 | stosd |
||
1533 | mov al, '.' |
||
1534 | push edi ecx |
||
1535 | lea ecx, [esi+1] |
||
1536 | test byte [edi-0x24], 1 |
||
1537 | jz @f |
||
1538 | rep stosw |
||
1539 | pop ecx |
||
1540 | xor eax, eax |
||
1541 | stosw |
||
1542 | pop edi |
||
1543 | add edi, 520 |
||
1544 | ret |
||
1545 | @@: |
||
1546 | rep stosb |
||
1547 | pop ecx |
||
1548 | xor eax, eax |
||
1549 | stosb |
||
1550 | pop edi |
||
1551 | add edi, 264 |
||
1552 | .ret: |
||
1553 | ret |
||
1554 | |||
1555 | .add_entry: |
||
1556 | ; do not return DOS 8.3 names |
||
1557 | cmp byte [esi+0x51], 2 |
||
1558 | jz .ret |
||
1559 | ; do not return system files |
||
1560 | ; ... note that there will be no bad effects if system files also were reported ... |
||
1561 | cmp dword [esi], 0x10 |
||
1562 | jb .ret |
||
1563 | mov eax, [edx] |
||
1564 | inc dword [eax+8] ; new file found |
||
1565 | dec ebx |
||
1566 | jns .ret |
||
1567 | dec ecx |
||
1568 | js .ret |
||
1569 | inc dword [eax+4] ; new file block copied |
||
1570 | mov eax, [edx+4] ; flags |
||
1571 | call ntfs_direntry_to_bdfe |
||
1572 | push ecx esi edi |
||
1573 | movzx ecx, byte [esi+0x50] |
||
1574 | add esi, 0x52 |
||
1575 | test byte [edi-0x24], 1 |
||
1576 | jz .ansi |
||
1577 | shr ecx, 1 |
||
1578 | rep movsd |
||
1579 | adc ecx, ecx |
||
1580 | rep movsw |
||
1581 | and word [edi], 0 |
||
1582 | pop edi |
||
1583 | add edi, 520 |
||
1584 | pop esi ecx |
||
1585 | ret |
||
1586 | .ansi: |
||
1587 | jecxz .skip |
||
1588 | @@: |
||
1589 | lodsw |
||
1590 | call uni2ansi_char |
||
1591 | stosb |
||
1592 | loop @b |
||
1593 | .skip: |
||
1594 | xor al, al |
||
1595 | stosb |
||
1596 | pop edi |
||
1597 | add edi, 264 |
||
1598 | pop esi ecx |
||
1599 | ret |
||
1600 | |||
1601 | ntfs_direntry_to_bdfe: |
||
1602 | mov [edi+4], eax ; ANSI/UNICODE name |
||
1603 | mov eax, [esi+48h] |
||
1604 | test eax, 0x10000000 |
||
1605 | jz @f |
||
1606 | and eax, not 0x10000000 |
||
1607 | or al, 0x10 |
||
1608 | @@: |
||
1609 | stosd |
||
1610 | scasd |
||
1611 | push edx |
||
1612 | mov eax, [esi+0x18] |
||
1613 | mov edx, [esi+0x1C] |
||
1614 | call ntfs_datetime_to_bdfe |
||
1615 | mov eax, [esi+0x30] |
||
1616 | mov edx, [esi+0x34] |
||
1617 | call ntfs_datetime_to_bdfe |
||
1618 | mov eax, [esi+0x20] |
||
1619 | mov edx, [esi+0x24] |
||
1620 | call ntfs_datetime_to_bdfe |
||
1621 | pop edx |
||
1622 | mov eax, [esi+0x40] |
||
1623 | stosd |
||
1624 | mov eax, [esi+0x44] |
||
1625 | stosd |
||
1626 | ret |
||
1627 | |||
1628 | iglobal |
||
1629 | _24 dd 24 |
||
1630 | _60 dd 60 |
||
1631 | _10000000 dd 10000000 |
||
1632 | days400year dd 365*400+100-4+1 |
||
1633 | days100year dd 365*100+25-1 |
||
1634 | days4year dd 365*4+1 |
||
1635 | days1year dd 365 |
||
1636 | months dd 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 |
||
1637 | months2 dd 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 |
||
1638 | _400 dd 400 |
||
1639 | _100 dd 100 |
||
1640 | endg |
||
1641 | |||
1642 | ntfs_datetime_to_bdfe: |
||
1643 | ; edx:eax = number of 100-nanosecond intervals since January 1, 1601, in UTC |
||
1644 | push eax |
||
1645 | mov eax, edx |
||
1646 | xor edx, edx |
||
1647 | div [_10000000] |
||
1648 | xchg eax, [esp] |
||
1649 | div [_10000000] |
||
1650 | pop edx |
||
1651 | .sec: |
||
1652 | ; edx:eax = number of seconds since January 1, 1601 |
||
1653 | push eax |
||
1654 | mov eax, edx |
||
1655 | xor edx, edx |
||
1656 | div [_60] |
||
1657 | xchg eax, [esp] |
||
1658 | div [_60] |
||
1659 | mov [edi], dl |
||
1660 | pop edx |
||
1661 | ; edx:eax = number of minutes |
||
1662 | div [_60] |
||
1663 | mov [edi+1], dl |
||
1664 | ; eax = number of hours (note that 2^64/(10^7*60*60) < 2^32) |
||
1665 | xor edx, edx |
||
1666 | div [_24] |
||
1667 | mov [edi+2], dl |
||
1668 | mov [edi+3], byte 0 |
||
1669 | ; eax = number of days since January 1, 1601 |
||
1670 | xor edx, edx |
||
1671 | div [days400year] |
||
1672 | imul eax, 400 |
||
1673 | add eax, 1601 |
||
1674 | mov [edi+6], ax |
||
1675 | mov eax, edx |
||
1676 | xor edx, edx |
||
1677 | div [days100year] |
||
1678 | cmp al, 4 |
||
1679 | jnz @f |
||
1680 | dec eax |
||
1681 | add edx, [days100year] |
||
1682 | @@: |
||
1683 | imul eax, 100 |
||
1684 | add [edi+6], ax |
||
1685 | mov eax, edx |
||
1686 | xor edx, edx |
||
1687 | div [days4year] |
||
1688 | shl eax, 2 |
||
1689 | add [edi+6], ax |
||
1690 | mov eax, edx |
||
1691 | xor edx, edx |
||
1692 | div [days1year] |
||
1693 | cmp al, 4 |
||
1694 | jnz @f |
||
1695 | dec eax |
||
1696 | add edx, [days1year] |
||
1697 | @@: |
||
1698 | add [edi+6], ax |
||
1699 | push esi edx |
||
1700 | mov esi, months |
||
1701 | movzx eax, word [edi+6] |
||
1702 | test al, 3 |
||
1703 | jnz .noleap |
||
1704 | xor edx, edx |
||
1705 | push eax |
||
1706 | div [_400] |
||
1707 | pop eax |
||
1708 | test edx, edx |
||
1709 | jz .leap |
||
1710 | xor edx, edx |
||
1711 | div [_100] |
||
1712 | test edx, edx |
||
1713 | jz .noleap |
||
1714 | .leap: |
||
1715 | mov esi, months2 |
||
1716 | .noleap: |
||
1717 | pop edx |
||
1718 | xor eax, eax |
||
1719 | inc eax |
||
1720 | @@: |
||
1721 | sub edx, [esi] |
||
1722 | jb @f |
||
1723 | add esi, 4 |
||
1724 | inc eax |
||
1725 | jmp @b |
||
1726 | @@: |
||
1727 | add edx, [esi] |
||
1728 | pop esi |
||
1729 | inc edx |
||
1730 | mov [edi+4], dl |
||
1731 | mov [edi+5], al |
||
1732 | add edi, 8 |
||
1733 | ret |
||
1734 | |||
1735 | ;---------------------------------------------------------------- |
||
1736 | ; |
||
1737 | ; ntfs_HdRewrite - write to NTFS hard disk |
||
1738 | ; |
||
1739 | ; esi points to filename |
||
1740 | ; ebx ignored (reserved) |
||
1741 | ; ecx number of bytes to write, 0+ |
||
1742 | ; edx mem location to data |
||
1743 | ; |
||
1744 | ; ret ebx = number of written bytes |
||
1745 | ; eax = 0 ok read or other = errormsg |
||
1746 | ; |
||
1747 | ;-------------------------------------------------------------- |
||
1748 | ntfs_HdRewrite: |
||
1749 | xor ebx, ebx |
||
1750 | mov eax, ERROR_UNSUPPORTED_FS |
||
1751 | ret |
||
1752 | |||
1753 | ;---------------------------------------------------------------- |
||
1754 | ; |
||
1755 | ; ntfs_HdWrite - write to NTFS hard disk |
||
1756 | ; |
||
1757 | ; esi points to filename |
||
1758 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
||
1759 | ; may be ebx=0 - start from first byte |
||
1760 | ; ecx number of bytes to write, 0+ |
||
1761 | ; edx mem location to data |
||
1762 | ; |
||
1763 | ; ret ebx = bytes written (maybe 0) |
||
1764 | ; eax = 0 ok write or other = errormsg |
||
1765 | ; |
||
1766 | ;-------------------------------------------------------------- |
||
1767 | ntfs_HdWrite: |
||
1768 | xor ebx, ebx |
||
1769 | mov eax, ERROR_UNSUPPORTED_FS |
||
1770 | ret |
||
1771 | |||
1772 | ;---------------------------------------------------------------- |
||
1773 | ; |
||
1774 | ; ntfs_HdSetFileEnd - set end of file on NTFS hard disk |
||
1775 | ; |
||
1776 | ; esi points to filename |
||
1777 | ; ebx points to 64-bit number = new file size |
||
1778 | ; ecx ignored (reserved) |
||
1779 | ; edx ignored (reserved) |
||
1780 | ; |
||
1781 | ; ret eax = 0 ok or other = errormsg |
||
1782 | ; |
||
1783 | ;-------------------------------------------------------------- |
||
1784 | ntfs_HdSetFileEnd: |
||
1785 | ntfs_HdSetFileInfo: |
||
1786 | ;---------------------------------------------------------------- |
||
1787 | ; |
||
1788 | ; ntfs_HdDelete - delete file or empty folder from NTFS hard disk |
||
1789 | ; |
||
1790 | ; esi points to filename |
||
1791 | ; |
||
1792 | ; ret eax = 0 ok or other = errormsg |
||
1793 | ; |
||
1794 | ;-------------------------------------------------------------- |
||
1795 | ntfs_HdDelete: |
||
1796 | mov eax, ERROR_UNSUPPORTED_FS |
||
1797 | ret |
||
1798 | |||
1799 | ntfs_HdGetFileInfo: |
||
1800 | cmp byte [esi], 0 |
||
1801 | jnz @f |
||
3598 | clevermous | 1802 | movi eax, 2 |
2288 | clevermous | 1803 | ret |
1804 | @@: |
||
1805 | call ntfs_find_lfn |
||
1806 | jnc .doit |
||
3598 | clevermous | 1807 | movi eax, ERROR_FILE_NOT_FOUND |
2288 | clevermous | 1808 | cmp [hd_error], 0 |
1809 | jz @f |
||
1810 | mov al, 11 |
||
1811 | @@: |
||
1812 | ret |
||
1813 | .doit: |
||
1814 | push esi edi |
||
1815 | mov esi, eax |
||
1816 | mov edi, edx |
||
1817 | xor eax, eax |
||
1818 | call ntfs_direntry_to_bdfe |
||
1819 | pop edi esi |
||
1820 | xor eax, eax |
||
1821 | ret>=>=>=> |
||
1822 |