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Rev | Author | Line No. | Line |
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2288 | clevermous | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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5363 | yogev_ezra | 3 | ;; Copyright (C) KolibriOS team 2004-2015. 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: 5363 $ |
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9 | |||
3742 | clevermous | 10 | struct NTFS PARTITION |
11 | Lock MUTEX ? ; currently operations with one partition |
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12 | ; can not be executed in parallel since the |
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13 | ; legacy code is not ready; this mutex guards |
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14 | ; all operations |
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15 | sectors_per_cluster dd ? |
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16 | mft_cluster dd ? |
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17 | mftmirr_cluster dd ? |
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18 | frs_size dd ? ; FRS size in bytes |
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19 | iab_size dd ? ; IndexAllocationBuffer size in bytes |
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20 | frs_buffer dd ? |
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21 | iab_buffer dd ? |
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22 | mft_retrieval dd ? |
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23 | mft_retrieval_size dd ? |
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24 | mft_retrieval_alloc dd ? |
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25 | mft_retrieval_end dd ? |
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26 | cur_index_size dd ? |
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27 | cur_index_buf dd ? |
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2288 | clevermous | 28 | |
3742 | clevermous | 29 | ntfs_cur_attr dd ? |
30 | ntfs_cur_iRecord dd ? |
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31 | ntfs_cur_offs dd ? ; in sectors |
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32 | ntfs_cur_size dd ? ; in sectors |
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33 | ntfs_cur_buf dd ? |
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34 | ntfs_cur_read dd ? ; [output] |
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35 | ntfs_bCanContinue db ? |
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36 | rb 3 |
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37 | |||
38 | cur_subnode_size dd ? |
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39 | ntfs_attr_iRecord dd ? |
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40 | ntfs_attr_iBaseRecord dd ? |
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41 | ntfs_attr_offs dd ? |
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42 | ntfs_attr_list dd ? |
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43 | ntfs_attr_size dq ? |
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44 | ntfs_cur_tail dd ? |
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45 | |||
46 | ntfs_attrlist_buf rb 0x400 |
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47 | ntfs_attrlist_mft_buf rb 0x400 |
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48 | ntfs_bitmap_buf rb 0x400 |
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49 | ends |
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50 | |||
51 | iglobal |
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52 | align 4 |
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53 | ntfs_user_functions: |
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54 | dd ntfs_free |
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55 | dd (ntfs_user_functions_end - ntfs_user_functions - 4) / 4 |
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56 | dd ntfs_Read |
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57 | dd ntfs_ReadFolder |
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58 | dd ntfs_Rewrite |
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59 | dd ntfs_Write |
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60 | dd ntfs_SetFileEnd |
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61 | dd ntfs_GetFileInfo |
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62 | dd ntfs_SetFileInfo |
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63 | dd 0 |
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64 | dd ntfs_Delete |
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65 | dd ntfs_CreateFolder |
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66 | ntfs_user_functions_end: |
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67 | endg |
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68 | |||
2288 | clevermous | 69 | ntfs_test_bootsec: |
70 | ; in: ebx->buffer, edx=size of partition |
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71 | ; out: CF set <=> invalid |
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72 | ; 1. Name=='NTFS ' |
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73 | cmp dword [ebx+3], 'NTFS' |
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74 | jnz .no |
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75 | cmp dword [ebx+7], ' ' |
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76 | jnz .no |
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77 | ; 2. Number of bytes per sector is the same as for physical device |
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78 | ; (that is, 0x200 for hard disk) |
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79 | cmp word [ebx+11], 0x200 |
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80 | jnz .no |
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81 | ; 3. Number of sectors per cluster must be power of 2 |
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82 | movzx eax, byte [ebx+13] |
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83 | dec eax |
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84 | js .no |
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85 | test al, [ebx+13] |
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86 | jnz .no |
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87 | ; 4. FAT parameters must be zero |
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88 | cmp word [ebx+14], 0 |
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89 | jnz .no |
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90 | cmp dword [ebx+16], 0 |
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91 | jnz .no |
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92 | cmp byte [ebx+20], 0 |
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93 | jnz .no |
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94 | cmp word [ebx+22], 0 |
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95 | jnz .no |
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96 | cmp dword [ebx+32], 0 |
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97 | jnz .no |
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98 | ; 5. Number of sectors <= partition size |
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99 | cmp dword [ebx+0x2C], 0 |
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100 | ja .no |
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101 | cmp [ebx+0x28], edx |
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102 | ja .no |
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103 | ; 6. $MFT and $MFTMirr clusters must be within partition |
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104 | cmp dword [ebx+0x34], 0 |
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105 | ja .no |
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106 | push edx |
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107 | movzx eax, byte [ebx+13] |
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108 | mul dword [ebx+0x30] |
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109 | test edx, edx |
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110 | pop edx |
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111 | jnz .no |
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112 | cmp eax, edx |
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113 | ja .no |
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114 | cmp dword [ebx+0x3C], 0 |
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115 | ja .no |
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116 | push edx |
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117 | movzx eax, byte [ebx+13] |
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118 | mul dword [ebx+0x38] |
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119 | test edx, edx |
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120 | pop edx |
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121 | jnz .no |
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122 | cmp eax, edx |
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123 | ja .no |
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124 | ; 7. Clusters per FRS must be either negative and in [-31,-9] or positive and power of 2 |
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125 | movsx eax, byte [ebx+0x40] |
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126 | cmp al, -31 |
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127 | jl .no |
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128 | cmp al, -9 |
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129 | jle @f |
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130 | dec eax |
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131 | js .no |
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132 | test [ebx+0x40], al |
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133 | jnz .no |
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134 | @@: |
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135 | ; 8. Same for clusters per IndexAllocationBuffer |
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136 | movsx eax, byte [ebx+0x44] |
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137 | cmp al, -31 |
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138 | jl .no |
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139 | cmp al, -9 |
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140 | jle @f |
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141 | dec eax |
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142 | js .no |
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143 | test [ebx+0x44], al |
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144 | jnz .no |
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145 | @@: |
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146 | ; OK, this is correct NTFS bootsector |
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147 | clc |
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148 | ret |
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149 | .no: |
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150 | ; No, this bootsector isn't NTFS |
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151 | stc |
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152 | ret |
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153 | |||
3742 | clevermous | 154 | proc ntfs_create_partition |
5089 | clevermous | 155 | cmp dword [esi+DISK.MediaInfo.SectorSize], 512 |
156 | jnz .nope |
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3742 | clevermous | 157 | mov edx, dword [ebp+PARTITION.Length] |
158 | cmp dword [esp+4], 0 |
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159 | jz .boot_read_ok |
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160 | add ebx, 512 |
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161 | lea eax, [edx-1] |
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162 | call fs_read32_sys |
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163 | test eax, eax |
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164 | jnz @f |
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165 | call ntfs_test_bootsec |
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166 | jnc .ntfs_setup |
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167 | @@: |
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168 | mov eax, edx |
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169 | shr eax, 1 |
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170 | call fs_read32_sys |
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171 | test eax, eax |
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172 | jnz .nope ; no chance... |
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173 | .boot_read_ok: |
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174 | call ntfs_test_bootsec |
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175 | jnc .ntfs_setup |
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176 | .nope: |
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177 | xor eax, eax |
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178 | jmp .exit |
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179 | |||
180 | .ntfs_setup: |
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2288 | clevermous | 181 | ; By given bootsector, initialize some NTFS variables |
3742 | clevermous | 182 | movi eax, sizeof.NTFS |
183 | call malloc |
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184 | test eax, eax |
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185 | jz .exit |
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186 | mov ecx, dword [ebp+PARTITION.FirstSector] |
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187 | mov dword [eax+NTFS.FirstSector], ecx |
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188 | mov ecx, dword [ebp+PARTITION.FirstSector+4] |
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189 | mov dword [eax+NTFS.FirstSector+4], ecx |
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190 | mov ecx, dword [ebp+PARTITION.Length] |
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191 | mov dword [eax+NTFS.Length], ecx |
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192 | mov ecx, dword [ebp+PARTITION.Length+4] |
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193 | mov dword [eax+NTFS.Length+4], ecx |
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194 | mov ecx, [ebp+PARTITION.Disk] |
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195 | mov [eax+NTFS.Disk], ecx |
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196 | mov [eax+NTFS.FSUserFunctions], ntfs_user_functions |
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197 | push ebx ebp esi |
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198 | mov ebp, eax |
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199 | |||
200 | lea ecx, [ebp+NTFS.Lock] |
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201 | call mutex_init |
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202 | |||
2288 | clevermous | 203 | movzx eax, byte [ebx+13] |
3742 | clevermous | 204 | mov [ebp+NTFS.sectors_per_cluster], eax |
2288 | clevermous | 205 | mov eax, [ebx+0x28] |
3742 | clevermous | 206 | mov dword [ebp+NTFS.Length], eax |
207 | and dword [ebp+NTFS.Length+4], 0 |
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2288 | clevermous | 208 | mov eax, [ebx+0x30] |
3742 | clevermous | 209 | mov [ebp+NTFS.mft_cluster], eax |
2288 | clevermous | 210 | mov eax, [ebx+0x38] |
3742 | clevermous | 211 | mov [ebp+NTFS.mftmirr_cluster], eax |
2288 | clevermous | 212 | movsx eax, byte [ebx+0x40] |
213 | test eax, eax |
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214 | js .1 |
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3742 | clevermous | 215 | mul [ebp+NTFS.sectors_per_cluster] |
2288 | clevermous | 216 | shl eax, 9 |
217 | jmp .2 |
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218 | .1: |
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219 | neg eax |
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220 | mov ecx, eax |
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221 | mov eax, 1 |
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222 | shl eax, cl |
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223 | .2: |
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3742 | clevermous | 224 | mov [ebp+NTFS.frs_size], eax |
2288 | clevermous | 225 | movsx eax, byte [ebx+0x44] |
226 | test eax, eax |
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227 | js .3 |
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3742 | clevermous | 228 | mul [ebp+NTFS.sectors_per_cluster] |
2288 | clevermous | 229 | shl eax, 9 |
230 | jmp .4 |
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231 | .3: |
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232 | neg eax |
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233 | mov ecx, eax |
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234 | mov eax, 1 |
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235 | shl eax, cl |
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236 | .4: |
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3742 | clevermous | 237 | mov [ebp+NTFS.iab_size], eax |
2288 | clevermous | 238 | ; allocate space for buffers |
3742 | clevermous | 239 | add eax, [ebp+NTFS.frs_size] |
2288 | clevermous | 240 | push eax |
241 | call kernel_alloc |
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242 | test eax, eax |
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3742 | clevermous | 243 | jz .fail_free |
244 | mov [ebp+NTFS.frs_buffer], eax |
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245 | add eax, [ebp+NTFS.frs_size] |
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246 | mov [ebp+NTFS.iab_buffer], eax |
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2288 | clevermous | 247 | ; read $MFT disposition |
3742 | clevermous | 248 | mov eax, [ebp+NTFS.mft_cluster] |
249 | mul [ebp+NTFS.sectors_per_cluster] |
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2288 | clevermous | 250 | call ntfs_read_frs_sector |
3742 | clevermous | 251 | test eax, eax |
2288 | clevermous | 252 | jnz .usemirr |
253 | cmp dword [ebx], 'FILE' |
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254 | jnz .usemirr |
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255 | call ntfs_restore_usa_frs |
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256 | jnc .mftok |
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257 | .usemirr: |
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3742 | clevermous | 258 | mov eax, [ebp+NTFS.mftmirr_cluster] |
259 | mul [ebp+NTFS.sectors_per_cluster] |
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2288 | clevermous | 260 | call ntfs_read_frs_sector |
3742 | clevermous | 261 | test eax, eax |
2288 | clevermous | 262 | jnz @f |
263 | cmp dword [ebx], 'FILE' |
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264 | jnz @f |
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265 | call ntfs_restore_usa_frs |
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266 | jnc .mftok |
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267 | @@: |
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268 | ; $MFT and $MFTMirr invalid! |
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269 | .fail_free_frs: |
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3742 | clevermous | 270 | push [ebp+NTFS.frs_buffer] |
2288 | clevermous | 271 | call kernel_free |
3742 | clevermous | 272 | .fail_free: |
273 | mov eax, ebp |
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274 | call free |
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275 | xor eax, eax |
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276 | .pop_exit: |
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277 | pop esi ebp ebx |
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278 | .exit: |
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279 | cmp dword [esp+4], 0 |
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280 | jz @f |
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281 | sub ebx, 512 |
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282 | @@: |
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283 | ret |
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2288 | clevermous | 284 | .fail_free_mft: |
3742 | clevermous | 285 | push [ebp+NTFS.mft_retrieval] |
2288 | clevermous | 286 | call kernel_free |
287 | jmp .fail_free_frs |
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288 | .mftok: |
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289 | ; read $MFT table retrieval information |
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290 | ; start with one page, increase if not enough (when MFT too fragmented) |
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291 | push ebx |
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292 | push 0x1000 |
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293 | call kernel_alloc |
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294 | pop ebx |
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295 | test eax, eax |
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296 | jz .fail_free_frs |
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3742 | clevermous | 297 | mov [ebp+NTFS.mft_retrieval], eax |
298 | and [ebp+NTFS.mft_retrieval_size], 0 |
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299 | mov [ebp+NTFS.mft_retrieval_alloc], 0x1000/8 |
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2288 | clevermous | 300 | ; $MFT base record must contain unnamed non-resident $DATA attribute |
301 | movzx eax, word [ebx+14h] |
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302 | add eax, ebx |
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303 | .scandata: |
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304 | cmp dword [eax], -1 |
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305 | jz .fail_free_mft |
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306 | cmp dword [eax], 0x80 |
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307 | jnz @f |
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308 | cmp byte [eax+9], 0 |
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309 | jz .founddata |
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310 | @@: |
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311 | add eax, [eax+4] |
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312 | jmp .scandata |
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313 | .founddata: |
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314 | cmp byte [eax+8], 0 |
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315 | jz .fail_free_mft |
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316 | ; load first portion of $DATA attribute retrieval information |
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317 | mov edx, [eax+0x18] |
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3742 | clevermous | 318 | mov [ebp+NTFS.mft_retrieval_end], edx |
2288 | clevermous | 319 | mov esi, eax |
320 | movzx eax, word [eax+0x20] |
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321 | add esi, eax |
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322 | sub esp, 10h |
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323 | .scanmcb: |
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324 | call ntfs_decode_mcb_entry |
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325 | jnc .scanmcbend |
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326 | call .get_mft_retrieval_ptr |
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327 | mov edx, [esp] ; block length |
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328 | mov [eax], edx |
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329 | mov edx, [esp+8] ; block addr (relative) |
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330 | mov [eax+4], edx |
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3742 | clevermous | 331 | inc [ebp+NTFS.mft_retrieval_size] |
2288 | clevermous | 332 | jmp .scanmcb |
333 | .scanmcbend: |
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334 | add esp, 10h |
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335 | ; there may be other portions of $DATA attribute in auxiliary records; |
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336 | ; if they will be needed, they will be loaded later |
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337 | |||
3742 | clevermous | 338 | mov [ebp+NTFS.cur_index_size], 0x1000/0x200 |
2288 | clevermous | 339 | push 0x1000 |
340 | call kernel_alloc |
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341 | test eax, eax |
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342 | jz .fail_free_mft |
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3742 | clevermous | 343 | mov [ebp+NTFS.cur_index_buf], eax |
2288 | clevermous | 344 | |
3742 | clevermous | 345 | mov eax, ebp |
346 | jmp .pop_exit |
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347 | endp |
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2288 | clevermous | 348 | |
349 | .get_mft_retrieval_ptr: |
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350 | pushad |
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3742 | clevermous | 351 | mov eax, [ebp+NTFS.mft_retrieval_size] |
352 | cmp eax, [ebp+NTFS.mft_retrieval_alloc] |
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2288 | clevermous | 353 | jnz .ok |
354 | add eax, 0x1000/8 |
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3742 | clevermous | 355 | mov [ebp+NTFS.mft_retrieval_alloc], eax |
2288 | clevermous | 356 | shl eax, 3 |
357 | push eax |
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358 | call kernel_alloc |
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359 | test eax, eax |
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360 | jnz @f |
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361 | popad |
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362 | add esp, 14h |
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363 | jmp .fail_free_mft |
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364 | @@: |
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3742 | clevermous | 365 | mov esi, [ebp+NTFS.mft_retrieval] |
2288 | clevermous | 366 | mov edi, eax |
3742 | clevermous | 367 | mov ecx, [ebp+NTFS.mft_retrieval_size] |
2288 | clevermous | 368 | add ecx, ecx |
369 | rep movsd |
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3742 | clevermous | 370 | push [ebp+NTFS.mft_retrieval] |
371 | mov [ebp+NTFS.mft_retrieval], eax |
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2288 | clevermous | 372 | call kernel_free |
3742 | clevermous | 373 | mov eax, [ebp+NTFS.mft_retrieval_size] |
2288 | clevermous | 374 | .ok: |
375 | shl eax, 3 |
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3742 | clevermous | 376 | add eax, [ebp+NTFS.mft_retrieval] |
2288 | clevermous | 377 | mov [esp+28], eax |
378 | popad |
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379 | ret |
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380 | |||
3742 | clevermous | 381 | proc ntfs_free |
382 | push ebx |
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383 | xchg ebx, eax |
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384 | stdcall kernel_free, [ebx+NTFS.frs_buffer] |
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385 | stdcall kernel_free, [ebx+NTFS.mft_retrieval] |
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386 | stdcall kernel_free, [ebx+NTFS.cur_index_buf] |
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387 | xchg ebx, eax |
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388 | call free |
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389 | pop ebx |
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390 | ret |
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391 | endp |
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392 | |||
393 | proc ntfs_lock |
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394 | lea ecx, [ebp+NTFS.Lock] |
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395 | jmp mutex_lock |
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396 | endp |
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397 | |||
398 | proc ntfs_unlock |
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399 | lea ecx, [ebp+NTFS.Lock] |
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400 | jmp mutex_unlock |
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401 | endp |
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402 | |||
2288 | clevermous | 403 | ntfs_read_frs_sector: |
3742 | clevermous | 404 | push ecx |
405 | mov ebx, [ebp+NTFS.frs_buffer] |
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406 | push ebx |
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407 | mov ecx, [ebp+NTFS.frs_size] |
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2288 | clevermous | 408 | shr ecx, 9 |
3742 | clevermous | 409 | push ecx |
410 | mov ecx, eax |
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2288 | clevermous | 411 | @@: |
3742 | clevermous | 412 | mov eax, ecx |
413 | call fs_read32_sys |
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414 | test eax, eax |
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2288 | clevermous | 415 | jnz .fail |
416 | add ebx, 0x200 |
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3742 | clevermous | 417 | inc ecx |
418 | dec dword [esp] |
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419 | jnz @b |
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420 | pop eax |
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2288 | clevermous | 421 | .fail: |
422 | pop ebx |
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3742 | clevermous | 423 | pop ecx |
2288 | clevermous | 424 | ret |
425 | |||
426 | ntfs_read_attr: |
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3742 | clevermous | 427 | ; in: variables in ebp+NTFS.* |
428 | ; out: [ebp+NTFS.ntfs_cur_read] |
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429 | ; out: CF=1 => notfound, in this case eax=0 => disk ok, otherwise eax=disk error code |
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430 | xor eax, eax |
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2288 | clevermous | 431 | pushad |
3742 | clevermous | 432 | and [ebp+NTFS.ntfs_cur_read], 0 |
433 | cmp [ebp+NTFS.ntfs_cur_iRecord], 0 |
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2288 | clevermous | 434 | jnz .nomft |
3742 | clevermous | 435 | cmp [ebp+NTFS.ntfs_cur_attr], 0x80 |
2288 | clevermous | 436 | jnz .nomft |
3742 | clevermous | 437 | mov eax, [ebp+NTFS.mft_retrieval_end] |
2288 | clevermous | 438 | inc eax |
3742 | clevermous | 439 | mul [ebp+NTFS.sectors_per_cluster] |
440 | cmp eax, [ebp+NTFS.ntfs_cur_offs] |
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2288 | clevermous | 441 | jbe .nomft |
442 | ; precalculated part of $Mft $DATA |
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3742 | clevermous | 443 | mov esi, [ebp+NTFS.mft_retrieval] |
444 | mov eax, [ebp+NTFS.ntfs_cur_offs] |
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2288 | clevermous | 445 | xor edx, edx |
3742 | clevermous | 446 | div [ebp+NTFS.sectors_per_cluster] |
2288 | clevermous | 447 | ; eax = VCN, edx = offset in sectors from beginning of cluster |
448 | xor ecx, ecx ; ecx will contain LCN |
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449 | .mftscan: |
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450 | add ecx, [esi+4] |
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451 | sub eax, [esi] |
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452 | jb @f |
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453 | add esi, 8 |
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454 | push eax |
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3742 | clevermous | 455 | mov eax, [ebp+NTFS.mft_retrieval_end] |
2288 | clevermous | 456 | shl eax, 3 |
3742 | clevermous | 457 | add eax, [ebp+NTFS.mft_retrieval] |
2288 | clevermous | 458 | cmp eax, esi |
459 | pop eax |
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460 | jnz .mftscan |
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461 | jmp .nomft |
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462 | @@: |
||
463 | push ecx |
||
464 | add ecx, eax |
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465 | add ecx, [esi] |
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466 | push eax |
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467 | push edx |
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3742 | clevermous | 468 | mov eax, [ebp+NTFS.sectors_per_cluster] |
2288 | clevermous | 469 | mul ecx |
470 | ; eax = sector on partition |
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471 | pop edx |
||
472 | add eax, edx |
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3742 | clevermous | 473 | mov ebx, [ebp+NTFS.ntfs_cur_buf] |
2288 | clevermous | 474 | pop ecx |
475 | neg ecx |
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3742 | clevermous | 476 | imul ecx, [ebp+NTFS.sectors_per_cluster] |
2288 | clevermous | 477 | sub ecx, edx |
3742 | clevermous | 478 | cmp ecx, [ebp+NTFS.ntfs_cur_size] |
2288 | clevermous | 479 | jb @f |
3742 | clevermous | 480 | mov ecx, [ebp+NTFS.ntfs_cur_size] |
2288 | clevermous | 481 | @@: |
482 | ; ecx = number of sequential sectors to read |
||
3742 | clevermous | 483 | push eax |
484 | call fs_read32_sys |
||
485 | pop edx |
||
486 | test eax, eax |
||
2288 | clevermous | 487 | jnz .errread |
3742 | clevermous | 488 | add [ebp+NTFS.ntfs_cur_read], 0x200 |
489 | dec [ebp+NTFS.ntfs_cur_size] |
||
490 | inc [ebp+NTFS.ntfs_cur_offs] |
||
2288 | clevermous | 491 | add ebx, 0x200 |
3742 | clevermous | 492 | mov [ebp+NTFS.ntfs_cur_buf], ebx |
493 | lea eax, [edx+1] |
||
2288 | clevermous | 494 | loop @b |
495 | pop ecx |
||
496 | xor eax, eax |
||
497 | xor edx, edx |
||
3742 | clevermous | 498 | cmp [ebp+NTFS.ntfs_cur_size], eax |
2288 | clevermous | 499 | jz @f |
500 | add esi, 8 |
||
501 | push eax |
||
3742 | clevermous | 502 | mov eax, [ebp+NTFS.mft_retrieval_end] |
2288 | clevermous | 503 | shl eax, 3 |
3742 | clevermous | 504 | add eax, [ebp+NTFS.mft_retrieval] |
2288 | clevermous | 505 | cmp eax, esi |
506 | pop eax |
||
507 | jz .nomft |
||
508 | jmp .mftscan |
||
509 | @@: |
||
510 | popad |
||
511 | ret |
||
512 | .errread: |
||
513 | pop ecx |
||
514 | .errret: |
||
3742 | clevermous | 515 | mov [esp+28], eax |
2288 | clevermous | 516 | stc |
517 | popad |
||
518 | ret |
||
519 | .nomft: |
||
520 | ; 1. Read file record. |
||
521 | ; N.B. This will do recursive call of read_attr for $MFT::$Data. |
||
3742 | clevermous | 522 | mov eax, [ebp+NTFS.ntfs_cur_iRecord] |
523 | mov [ebp+NTFS.ntfs_attr_iRecord], eax |
||
524 | and [ebp+NTFS.ntfs_attr_list], 0 |
||
525 | or dword [ebp+NTFS.ntfs_attr_size], -1 |
||
526 | or dword [ebp+NTFS.ntfs_attr_size+4], -1 |
||
527 | or [ebp+NTFS.ntfs_attr_iBaseRecord], -1 |
||
2288 | clevermous | 528 | call ntfs_read_file_record |
3742 | clevermous | 529 | jc .errret |
2288 | clevermous | 530 | ; 2. Find required attribute. |
3742 | clevermous | 531 | mov eax, [ebp+NTFS.frs_buffer] |
2288 | clevermous | 532 | ; a) For auxiliary records, read base record |
533 | ; N.B. If base record is present, |
||
534 | ; base iRecord may be 0 (for $Mft), but SequenceNumber is nonzero |
||
535 | cmp dword [eax+24h], 0 |
||
536 | jz @f |
||
537 | mov eax, [eax+20h] |
||
538 | ; test eax, eax |
||
539 | ; jz @f |
||
540 | .beginfindattr: |
||
3742 | clevermous | 541 | mov [ebp+NTFS.ntfs_attr_iRecord], eax |
2288 | clevermous | 542 | call ntfs_read_file_record |
3742 | clevermous | 543 | jc .errret |
2288 | clevermous | 544 | @@: |
545 | ; b) Scan for required attribute and for $ATTR_LIST |
||
3742 | clevermous | 546 | mov eax, [ebp+NTFS.frs_buffer] |
2288 | clevermous | 547 | movzx ecx, word [eax+14h] |
548 | add eax, ecx |
||
3742 | clevermous | 549 | mov ecx, [ebp+NTFS.ntfs_cur_attr] |
550 | and [ebp+NTFS.ntfs_attr_offs], 0 |
||
2288 | clevermous | 551 | .scanattr: |
552 | cmp dword [eax], -1 |
||
553 | jz .scandone |
||
554 | cmp dword [eax], ecx |
||
555 | jz .okattr |
||
3742 | clevermous | 556 | cmp [ebp+NTFS.ntfs_attr_iBaseRecord], -1 |
2288 | clevermous | 557 | jnz .scancont |
558 | cmp dword [eax], 0x20 ; $ATTR_LIST |
||
559 | jnz .scancont |
||
3742 | clevermous | 560 | mov [ebp+NTFS.ntfs_attr_list], eax |
2288 | clevermous | 561 | jmp .scancont |
562 | .okattr: |
||
563 | ; ignore named $DATA attributes (aka NTFS streams) |
||
564 | cmp ecx, 0x80 |
||
565 | jnz @f |
||
566 | cmp byte [eax+9], 0 |
||
567 | jnz .scancont |
||
568 | @@: |
||
3742 | clevermous | 569 | mov [ebp+NTFS.ntfs_attr_offs], eax |
2288 | clevermous | 570 | .scancont: |
571 | add eax, [eax+4] |
||
572 | jmp .scanattr |
||
573 | .continue: |
||
574 | pushad |
||
3742 | clevermous | 575 | and [ebp+NTFS.ntfs_cur_read], 0 |
2288 | clevermous | 576 | .scandone: |
577 | ; c) Check for required offset and length |
||
3742 | clevermous | 578 | mov ecx, [ebp+NTFS.ntfs_attr_offs] |
2288 | clevermous | 579 | jecxz .noattr |
3742 | clevermous | 580 | push [ebp+NTFS.ntfs_cur_size] |
581 | push [ebp+NTFS.ntfs_cur_read] |
||
2288 | clevermous | 582 | call .doreadattr |
583 | pop edx |
||
3742 | clevermous | 584 | pop ecx |
2288 | clevermous | 585 | jc @f |
3742 | clevermous | 586 | cmp [ebp+NTFS.ntfs_bCanContinue], 0 |
2288 | clevermous | 587 | jz @f |
3742 | clevermous | 588 | sub edx, [ebp+NTFS.ntfs_cur_read] |
2288 | clevermous | 589 | neg edx |
590 | shr edx, 9 |
||
3742 | clevermous | 591 | sub ecx, edx |
592 | mov [ebp+NTFS.ntfs_cur_size], ecx |
||
2288 | clevermous | 593 | jnz .not_in_cur |
594 | @@: |
||
595 | popad |
||
596 | ret |
||
597 | .noattr: |
||
598 | .not_in_cur: |
||
3742 | clevermous | 599 | cmp [ebp+NTFS.ntfs_cur_attr], 0x20 |
2288 | clevermous | 600 | jz @f |
3742 | clevermous | 601 | mov ecx, [ebp+NTFS.ntfs_attr_list] |
2288 | clevermous | 602 | test ecx, ecx |
603 | jnz .lookattr |
||
604 | .ret_is_attr: |
||
3742 | clevermous | 605 | and dword [esp+28], 0 |
606 | cmp [ebp+NTFS.ntfs_attr_offs], 1 ; CF set <=> ntfs_attr_offs == 0 |
||
2288 | clevermous | 607 | popad |
608 | ret |
||
609 | .lookattr: |
||
610 | ; required attribute or required offset was not found in base record; |
||
611 | ; it may be present in auxiliary records; |
||
612 | ; scan $ATTR_LIST |
||
3742 | clevermous | 613 | mov eax, [ebp+NTFS.ntfs_attr_iBaseRecord] |
2288 | clevermous | 614 | cmp eax, -1 |
615 | jz @f |
||
616 | call ntfs_read_file_record |
||
3742 | clevermous | 617 | jc .errret |
618 | or [ebp+NTFS.ntfs_attr_iBaseRecord], -1 |
||
2288 | clevermous | 619 | @@: |
3742 | clevermous | 620 | push [ebp+NTFS.ntfs_cur_offs] |
621 | push [ebp+NTFS.ntfs_cur_size] |
||
622 | push [ebp+NTFS.ntfs_cur_read] |
||
623 | push [ebp+NTFS.ntfs_cur_buf] |
||
624 | push dword [ebp+NTFS.ntfs_attr_size] |
||
625 | push dword [ebp+NTFS.ntfs_attr_size+4] |
||
626 | or dword [ebp+NTFS.ntfs_attr_size], -1 |
||
627 | or dword [ebp+NTFS.ntfs_attr_size+4], -1 |
||
628 | and [ebp+NTFS.ntfs_cur_offs], 0 |
||
629 | mov [ebp+NTFS.ntfs_cur_size], 2 |
||
630 | and [ebp+NTFS.ntfs_cur_read], 0 |
||
631 | lea eax, [ebp+NTFS.ntfs_attrlist_buf] |
||
632 | cmp [ebp+NTFS.ntfs_cur_iRecord], 0 |
||
2288 | clevermous | 633 | jnz @f |
3742 | clevermous | 634 | lea eax, [ebp+NTFS.ntfs_attrlist_mft_buf] |
2288 | clevermous | 635 | @@: |
3742 | clevermous | 636 | mov [ebp+NTFS.ntfs_cur_buf], eax |
2288 | clevermous | 637 | push eax |
638 | call .doreadattr |
||
639 | pop esi |
||
640 | mov edx, 1 |
||
3742 | clevermous | 641 | pop dword [ebp+NTFS.ntfs_attr_size+4] |
642 | pop dword [ebp+NTFS.ntfs_attr_size] |
||
643 | mov ecx, [ebp+NTFS.ntfs_cur_read] |
||
644 | pop [ebp+NTFS.ntfs_cur_buf] |
||
645 | pop [ebp+NTFS.ntfs_cur_read] |
||
646 | pop [ebp+NTFS.ntfs_cur_size] |
||
647 | pop [ebp+NTFS.ntfs_cur_offs] |
||
2288 | clevermous | 648 | jc .errret |
649 | or edi, -1 |
||
3742 | clevermous | 650 | lea ecx, [ecx+esi-1Ah] |
2288 | clevermous | 651 | .scanliststart: |
3742 | clevermous | 652 | push ecx |
653 | mov eax, [ebp+NTFS.ntfs_cur_attr] |
||
2288 | clevermous | 654 | .scanlist: |
3742 | clevermous | 655 | cmp esi, [esp] |
2288 | clevermous | 656 | jae .scanlistdone |
657 | cmp eax, [esi] |
||
658 | jz @f |
||
659 | .scanlistcont: |
||
660 | movzx ecx, word [esi+4] |
||
661 | add esi, ecx |
||
662 | jmp .scanlist |
||
663 | @@: |
||
664 | ; ignore named $DATA attributes (aka NTFS streams) |
||
665 | cmp eax, 0x80 |
||
666 | jnz @f |
||
667 | cmp byte [esi+6], 0 |
||
668 | jnz .scanlistcont |
||
669 | @@: |
||
670 | push eax |
||
671 | mov eax, [esi+8] |
||
672 | test eax, eax |
||
673 | jnz .testf |
||
3742 | clevermous | 674 | mov eax, dword [ebp+NTFS.ntfs_attr_size] |
675 | and eax, dword [ebp+NTFS.ntfs_attr_size+4] |
||
2288 | clevermous | 676 | cmp eax, -1 |
677 | jnz .testfz |
||
678 | ; if attribute is in auxiliary records, its size is defined only in first |
||
679 | mov eax, [esi+10h] |
||
680 | call ntfs_read_file_record |
||
3742 | clevermous | 681 | jnc @f |
2288 | clevermous | 682 | .errret_pop: |
3742 | clevermous | 683 | pop ecx ecx |
2288 | clevermous | 684 | jmp .errret |
3742 | clevermous | 685 | .errret2_pop: |
686 | xor eax, eax |
||
687 | jmp .errret_pop |
||
2288 | clevermous | 688 | @@: |
3742 | clevermous | 689 | mov eax, [ebp+NTFS.frs_buffer] |
2288 | clevermous | 690 | movzx ecx, word [eax+14h] |
691 | add eax, ecx |
||
3742 | clevermous | 692 | mov ecx, [ebp+NTFS.ntfs_cur_attr] |
2288 | clevermous | 693 | @@: |
694 | cmp dword [eax], -1 |
||
3742 | clevermous | 695 | jz .errret2_pop |
2288 | clevermous | 696 | cmp dword [eax], ecx |
697 | jz @f |
||
698 | .l1: |
||
699 | add eax, [eax+4] |
||
700 | jmp @b |
||
701 | @@: |
||
702 | cmp eax, 0x80 |
||
703 | jnz @f |
||
704 | cmp byte [eax+9], 0 |
||
705 | jnz .l1 |
||
706 | @@: |
||
707 | cmp byte [eax+8], 0 |
||
708 | jnz .sdnores |
||
709 | mov eax, [eax+10h] |
||
3742 | clevermous | 710 | mov dword [ebp+NTFS.ntfs_attr_size], eax |
711 | and dword [ebp+NTFS.ntfs_attr_size+4], 0 |
||
2288 | clevermous | 712 | jmp .testfz |
713 | .sdnores: |
||
714 | mov ecx, [eax+30h] |
||
3742 | clevermous | 715 | mov dword [ebp+NTFS.ntfs_attr_size], ecx |
2288 | clevermous | 716 | mov ecx, [eax+34h] |
3742 | clevermous | 717 | mov dword [ebp+NTFS.ntfs_attr_size+4], ecx |
2288 | clevermous | 718 | .testfz: |
719 | xor eax, eax |
||
720 | .testf: |
||
3742 | clevermous | 721 | imul eax, [ebp+NTFS.sectors_per_cluster] |
722 | cmp eax, [ebp+NTFS.ntfs_cur_offs] |
||
2288 | clevermous | 723 | pop eax |
724 | ja @f |
||
725 | mov edi, [esi+10h] ; keep previous iRecord |
||
726 | jmp .scanlistcont |
||
727 | @@: |
||
3742 | clevermous | 728 | pop ecx |
2288 | clevermous | 729 | .scanlistfound: |
730 | cmp edi, -1 |
||
731 | jnz @f |
||
732 | popad |
||
733 | ret |
||
734 | @@: |
||
3742 | clevermous | 735 | mov eax, [ebp+NTFS.ntfs_cur_iRecord] |
736 | mov [ebp+NTFS.ntfs_attr_iBaseRecord], eax |
||
2288 | clevermous | 737 | mov eax, edi |
738 | jmp .beginfindattr |
||
739 | .scanlistdone: |
||
3742 | clevermous | 740 | pop ecx |
741 | sub ecx, ebp |
||
742 | sub ecx, NTFS.ntfs_attrlist_buf-1Ah |
||
743 | cmp [ebp+NTFS.ntfs_cur_iRecord], 0 |
||
2288 | clevermous | 744 | jnz @f |
3742 | clevermous | 745 | sub ecx, NTFS.ntfs_attrlist_mft_buf-NTFS.ntfs_attrlist_buf |
2288 | clevermous | 746 | @@: |
3742 | clevermous | 747 | cmp ecx, 0x400 |
2288 | clevermous | 748 | jnz .scanlistfound |
749 | inc edx |
||
750 | push esi edi |
||
3742 | clevermous | 751 | lea esi, [ebp+NTFS.ntfs_attrlist_buf+0x200] |
752 | lea edi, [ebp+NTFS.ntfs_attrlist_buf] |
||
753 | cmp [ebp+NTFS.ntfs_cur_iRecord], 0 |
||
2288 | clevermous | 754 | jnz @f |
3742 | clevermous | 755 | lea esi, [ebp+NTFS.ntfs_attrlist_mft_buf+0x200] |
756 | lea edi, [ebp+NTFS.ntfs_attrlist_mft_buf] |
||
2288 | clevermous | 757 | @@: |
758 | mov ecx, 0x200/4 |
||
759 | rep movsd |
||
760 | mov eax, edi |
||
761 | pop edi esi |
||
762 | sub esi, 0x200 |
||
3742 | clevermous | 763 | push [ebp+NTFS.ntfs_cur_offs] |
764 | push [ebp+NTFS.ntfs_cur_size] |
||
765 | push [ebp+NTFS.ntfs_cur_read] |
||
766 | push [ebp+NTFS.ntfs_cur_buf] |
||
767 | push dword [ebp+NTFS.ntfs_attr_size] |
||
768 | push dword [ebp+NTFS.ntfs_attr_size+4] |
||
769 | or dword [ebp+NTFS.ntfs_attr_size], -1 |
||
770 | or dword [ebp+NTFS.ntfs_attr_size+4], -1 |
||
771 | mov [ebp+NTFS.ntfs_cur_offs], edx |
||
772 | mov [ebp+NTFS.ntfs_cur_size], 1 |
||
773 | and [ebp+NTFS.ntfs_cur_read], 0 |
||
774 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
775 | mov ecx, [ebp+NTFS.ntfs_attr_list] |
||
776 | push esi edx edi |
||
2288 | clevermous | 777 | call .doreadattr |
3742 | clevermous | 778 | pop edi edx esi |
779 | mov ecx, [ebp+NTFS.ntfs_cur_read] |
||
780 | pop dword [ebp+NTFS.ntfs_attr_size+4] |
||
781 | pop dword [ebp+NTFS.ntfs_attr_size] |
||
782 | pop [ebp+NTFS.ntfs_cur_buf] |
||
783 | pop [ebp+NTFS.ntfs_cur_read] |
||
784 | pop [ebp+NTFS.ntfs_cur_size] |
||
785 | pop [ebp+NTFS.ntfs_cur_offs] |
||
2288 | clevermous | 786 | jc .errret |
3742 | clevermous | 787 | lea ecx, [ecx+ebp+NTFS.ntfs_attrlist_buf+0x200-0x1A] |
788 | cmp [ebp+NTFS.ntfs_cur_iRecord], 0 |
||
2288 | clevermous | 789 | jnz .scanliststart |
3742 | clevermous | 790 | add ecx, NTFS.ntfs_attrlist_mft_buf-NTFS.ntfs_attrlist_buf |
2288 | clevermous | 791 | jmp .scanliststart |
792 | |||
793 | .doreadattr: |
||
3742 | clevermous | 794 | mov [ebp+NTFS.ntfs_bCanContinue], 0 |
2288 | clevermous | 795 | cmp byte [ecx+8], 0 |
796 | jnz .nonresident |
||
797 | mov eax, [ecx+10h] ; length |
||
798 | mov esi, eax |
||
3742 | clevermous | 799 | mov edx, [ebp+NTFS.ntfs_cur_offs] |
2288 | clevermous | 800 | shr eax, 9 |
801 | cmp eax, edx |
||
802 | jb .okret |
||
803 | shl edx, 9 |
||
804 | sub esi, edx |
||
805 | movzx eax, word [ecx+14h] |
||
806 | add edx, eax |
||
807 | add edx, ecx ; edx -> data |
||
3742 | clevermous | 808 | mov eax, [ebp+NTFS.ntfs_cur_size] |
2288 | clevermous | 809 | cmp eax, (0xFFFFFFFF shr 9)+1 |
810 | jbe @f |
||
811 | mov eax, (0xFFFFFFFF shr 9)+1 |
||
812 | @@: |
||
813 | shl eax, 9 |
||
814 | cmp eax, esi |
||
815 | jbe @f |
||
816 | mov eax, esi |
||
817 | @@: |
||
818 | ; eax = length, edx -> data |
||
3742 | clevermous | 819 | mov [ebp+NTFS.ntfs_cur_read], eax |
2288 | clevermous | 820 | mov ecx, eax |
821 | mov eax, edx |
||
3742 | clevermous | 822 | mov ebx, [ebp+NTFS.ntfs_cur_buf] |
2288 | clevermous | 823 | call memmove |
3742 | clevermous | 824 | and [ebp+NTFS.ntfs_cur_size], 0 ; CF=0 |
2288 | clevermous | 825 | ret |
826 | .nonresident: |
||
827 | ; Not all auxiliary records contain correct FileSize info |
||
3742 | clevermous | 828 | mov eax, dword [ebp+NTFS.ntfs_attr_size] |
829 | mov edx, dword [ebp+NTFS.ntfs_attr_size+4] |
||
2288 | clevermous | 830 | push eax |
831 | and eax, edx |
||
832 | cmp eax, -1 |
||
833 | pop eax |
||
834 | jnz @f |
||
835 | mov eax, [ecx+30h] ; FileSize |
||
836 | mov edx, [ecx+34h] |
||
3742 | clevermous | 837 | mov dword [ebp+NTFS.ntfs_attr_size], eax |
838 | mov dword [ebp+NTFS.ntfs_attr_size+4], edx |
||
2288 | clevermous | 839 | @@: |
840 | add eax, 0x1FF |
||
841 | adc edx, 0 |
||
842 | shrd eax, edx, 9 |
||
3742 | clevermous | 843 | sub eax, [ebp+NTFS.ntfs_cur_offs] |
2288 | clevermous | 844 | ja @f |
845 | ; return with nothing read |
||
3742 | clevermous | 846 | and [ebp+NTFS.ntfs_cur_size], 0 |
2288 | clevermous | 847 | .okret: |
848 | clc |
||
849 | ret |
||
850 | @@: |
||
851 | ; reduce read length |
||
3742 | clevermous | 852 | and [ebp+NTFS.ntfs_cur_tail], 0 |
853 | cmp [ebp+NTFS.ntfs_cur_size], eax |
||
2288 | clevermous | 854 | jb @f |
3742 | clevermous | 855 | mov [ebp+NTFS.ntfs_cur_size], eax |
856 | mov eax, dword [ebp+NTFS.ntfs_attr_size] |
||
2288 | clevermous | 857 | and eax, 0x1FF |
3742 | clevermous | 858 | mov [ebp+NTFS.ntfs_cur_tail], eax |
2288 | clevermous | 859 | @@: |
3742 | clevermous | 860 | cmp [ebp+NTFS.ntfs_cur_size], 0 |
2288 | clevermous | 861 | jz .okret |
3742 | clevermous | 862 | mov eax, [ebp+NTFS.ntfs_cur_offs] |
2288 | clevermous | 863 | xor edx, edx |
3742 | clevermous | 864 | div [ebp+NTFS.sectors_per_cluster] |
2288 | clevermous | 865 | sub eax, [ecx+10h] ; first_vbo |
866 | jb .okret |
||
867 | ; eax = cluster, edx = starting sector |
||
868 | sub esp, 10h |
||
869 | movzx esi, word [ecx+20h] ; mcb_info_ofs |
||
870 | add esi, ecx |
||
3742 | clevermous | 871 | xor edi, edi |
2288 | clevermous | 872 | .readloop: |
873 | call ntfs_decode_mcb_entry |
||
874 | jnc .break |
||
3742 | clevermous | 875 | add edi, [esp+8] |
2288 | clevermous | 876 | sub eax, [esp] |
877 | jae .readloop |
||
878 | push ecx |
||
879 | push eax |
||
880 | add eax, [esp+8] |
||
3742 | clevermous | 881 | add eax, edi |
882 | imul eax, [ebp+NTFS.sectors_per_cluster] |
||
2288 | clevermous | 883 | add eax, edx |
884 | pop ecx |
||
885 | neg ecx |
||
3742 | clevermous | 886 | imul ecx, [ebp+NTFS.sectors_per_cluster] |
2288 | clevermous | 887 | sub ecx, edx |
3742 | clevermous | 888 | cmp ecx, [ebp+NTFS.ntfs_cur_size] |
2288 | clevermous | 889 | jb @f |
3742 | clevermous | 890 | mov ecx, [ebp+NTFS.ntfs_cur_size] |
2288 | clevermous | 891 | @@: |
3742 | clevermous | 892 | mov ebx, [ebp+NTFS.ntfs_cur_buf] |
2288 | clevermous | 893 | @@: |
3742 | clevermous | 894 | push eax |
895 | cmp [ebp+NTFS.ntfs_cur_attr], 0x80 |
||
896 | jnz .sys |
||
897 | cmp [ebp+NTFS.ntfs_cur_iRecord], 0 |
||
898 | jz .sys |
||
899 | call fs_read32_app |
||
900 | jmp .appsys |
||
901 | .sys: |
||
902 | call fs_read32_sys |
||
903 | .appsys: |
||
904 | pop edx |
||
905 | test eax, eax |
||
2288 | clevermous | 906 | jnz .errread2 |
907 | add ebx, 0x200 |
||
3742 | clevermous | 908 | mov [ebp+NTFS.ntfs_cur_buf], ebx |
909 | lea eax, [edx+1] |
||
910 | add [ebp+NTFS.ntfs_cur_read], 0x200 |
||
911 | dec [ebp+NTFS.ntfs_cur_size] |
||
912 | inc [ebp+NTFS.ntfs_cur_offs] |
||
2288 | clevermous | 913 | loop @b |
914 | pop ecx |
||
915 | xor eax, eax |
||
916 | xor edx, edx |
||
3742 | clevermous | 917 | cmp [ebp+NTFS.ntfs_cur_size], 0 |
2288 | clevermous | 918 | jnz .readloop |
919 | add esp, 10h |
||
3742 | clevermous | 920 | mov eax, [ebp+NTFS.ntfs_cur_tail] |
2288 | clevermous | 921 | test eax, eax |
922 | jz @f |
||
923 | sub eax, 0x200 |
||
3742 | clevermous | 924 | add [ebp+NTFS.ntfs_cur_read], eax |
2288 | clevermous | 925 | @@: |
926 | clc |
||
927 | ret |
||
928 | .errread2: |
||
929 | pop ecx |
||
930 | add esp, 10h |
||
931 | stc |
||
932 | ret |
||
933 | .break: |
||
934 | add esp, 10h ; CF=0 |
||
3742 | clevermous | 935 | mov [ebp+NTFS.ntfs_bCanContinue], 1 |
2288 | clevermous | 936 | ret |
937 | |||
938 | ntfs_read_file_record: |
||
939 | ; in: eax=iRecord |
||
3742 | clevermous | 940 | ; out: [ebp+NTFS.frs_buffer] contains information |
941 | ; CF=1 - failed, in this case eax=0 => something with FS, eax nonzero => disk error |
||
942 | ; Read attr $DATA of $Mft, starting from eax*[ebp+NTFS.frs_size] |
||
2288 | clevermous | 943 | push ecx edx |
3742 | clevermous | 944 | mov ecx, [ebp+NTFS.frs_size] |
2288 | clevermous | 945 | mul ecx |
946 | shrd eax, edx, 9 |
||
947 | shr edx, 9 |
||
3742 | clevermous | 948 | jnz .errret |
949 | push [ebp+NTFS.ntfs_attr_iRecord] |
||
950 | push [ebp+NTFS.ntfs_attr_iBaseRecord] |
||
951 | push [ebp+NTFS.ntfs_attr_offs] |
||
952 | push [ebp+NTFS.ntfs_attr_list] |
||
953 | push dword [ebp+NTFS.ntfs_attr_size+4] |
||
954 | push dword [ebp+NTFS.ntfs_attr_size] |
||
955 | push [ebp+NTFS.ntfs_cur_iRecord] |
||
956 | push [ebp+NTFS.ntfs_cur_attr] |
||
957 | push [ebp+NTFS.ntfs_cur_offs] |
||
958 | push [ebp+NTFS.ntfs_cur_size] |
||
959 | push [ebp+NTFS.ntfs_cur_buf] |
||
960 | push [ebp+NTFS.ntfs_cur_read] |
||
961 | mov [ebp+NTFS.ntfs_cur_attr], 0x80 ; $DATA |
||
962 | and [ebp+NTFS.ntfs_cur_iRecord], 0 ; $Mft |
||
963 | mov [ebp+NTFS.ntfs_cur_offs], eax |
||
2288 | clevermous | 964 | shr ecx, 9 |
3742 | clevermous | 965 | mov [ebp+NTFS.ntfs_cur_size], ecx |
966 | mov eax, [ebp+NTFS.frs_buffer] |
||
967 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
2288 | clevermous | 968 | call ntfs_read_attr |
3742 | clevermous | 969 | mov edx, [ebp+NTFS.ntfs_cur_read] |
970 | pop [ebp+NTFS.ntfs_cur_read] |
||
971 | pop [ebp+NTFS.ntfs_cur_buf] |
||
972 | pop [ebp+NTFS.ntfs_cur_size] |
||
973 | pop [ebp+NTFS.ntfs_cur_offs] |
||
974 | pop [ebp+NTFS.ntfs_cur_attr] |
||
975 | pop [ebp+NTFS.ntfs_cur_iRecord] |
||
976 | pop dword [ebp+NTFS.ntfs_attr_size] |
||
977 | pop dword [ebp+NTFS.ntfs_attr_size+4] |
||
978 | pop [ebp+NTFS.ntfs_attr_list] |
||
979 | pop [ebp+NTFS.ntfs_attr_offs] |
||
980 | pop [ebp+NTFS.ntfs_attr_iBaseRecord] |
||
981 | pop [ebp+NTFS.ntfs_attr_iRecord] |
||
982 | jc .ret |
||
983 | cmp edx, [ebp+NTFS.frs_size] |
||
2288 | clevermous | 984 | jnz .errret |
3742 | clevermous | 985 | mov eax, [ebp+NTFS.frs_buffer] |
2288 | clevermous | 986 | cmp dword [eax], 'FILE' |
987 | jnz .errret |
||
988 | push ebx |
||
989 | mov ebx, eax |
||
990 | call ntfs_restore_usa_frs |
||
991 | pop ebx |
||
3742 | clevermous | 992 | jc .errret |
2288 | clevermous | 993 | .ret: |
3742 | clevermous | 994 | pop edx ecx |
2288 | clevermous | 995 | ret |
3742 | clevermous | 996 | .errret: |
2288 | clevermous | 997 | pop edx ecx |
998 | xor eax, eax |
||
3742 | clevermous | 999 | stc |
2288 | clevermous | 1000 | ret |
1001 | |||
1002 | ntfs_restore_usa_frs: |
||
3742 | clevermous | 1003 | mov eax, [ebp+NTFS.frs_size] |
2288 | clevermous | 1004 | ntfs_restore_usa: |
1005 | pushad |
||
1006 | shr eax, 9 |
||
1007 | mov ecx, eax |
||
1008 | inc eax |
||
1009 | cmp [ebx+6], ax |
||
1010 | jnz .err |
||
1011 | movzx eax, word [ebx+4] |
||
1012 | lea esi, [eax+ebx] |
||
1013 | lodsw |
||
1014 | mov edx, eax |
||
1015 | lea edi, [ebx+0x1FE] |
||
1016 | @@: |
||
1017 | cmp [edi], dx |
||
1018 | jnz .err |
||
1019 | lodsw |
||
1020 | stosw |
||
1021 | add edi, 0x1FE |
||
1022 | loop @b |
||
1023 | popad |
||
1024 | clc |
||
1025 | ret |
||
1026 | .err: |
||
1027 | popad |
||
1028 | stc |
||
1029 | ret |
||
1030 | |||
1031 | ntfs_decode_mcb_entry: |
||
1032 | push eax ecx edi |
||
1033 | lea edi, [esp+16] |
||
1034 | xor eax, eax |
||
1035 | lodsb |
||
1036 | test al, al |
||
1037 | jz .end |
||
1038 | mov ecx, eax |
||
1039 | and ecx, 0xF |
||
1040 | cmp ecx, 8 |
||
1041 | ja .end |
||
1042 | push ecx |
||
1043 | rep movsb |
||
1044 | pop ecx |
||
1045 | sub ecx, 8 |
||
1046 | neg ecx |
||
1047 | cmp byte [esi-1], 80h |
||
1048 | jae .end |
||
1049 | push eax |
||
1050 | xor eax, eax |
||
1051 | rep stosb |
||
1052 | pop ecx |
||
1053 | shr ecx, 4 |
||
1054 | cmp ecx, 8 |
||
1055 | ja .end |
||
1056 | push ecx |
||
1057 | rep movsb |
||
1058 | pop ecx |
||
1059 | sub ecx, 8 |
||
1060 | neg ecx |
||
1061 | cmp byte [esi-1], 80h |
||
1062 | cmc |
||
1063 | sbb eax, eax |
||
1064 | rep stosb |
||
1065 | stc |
||
1066 | .end: |
||
1067 | pop edi ecx eax |
||
1068 | ret |
||
1069 | |||
1070 | unichar_toupper: |
||
1071 | push eax |
||
1072 | call uni2ansi_char |
||
1073 | cmp al, '_' |
||
1074 | jz .unk |
||
1075 | add esp, 4 |
||
1504 | diamond | 1076 | call char_toupper |
1077 | jmp ansi2uni_char |
||
1078 | .unk: |
||
1079 | pop eax |
||
1080 | ret |
||
2288 | clevermous | 1081 | |
1082 | ntfs_find_lfn: |
||
3742 | clevermous | 1083 | ; in: esi+[esp+4] -> name |
2288 | clevermous | 1084 | ; out: CF=1 - file not found |
3742 | clevermous | 1085 | ; else CF=0, [ebp+NTFS.ntfs_cur_iRecord] valid, eax->record in parent directory |
1086 | mov [ebp+NTFS.ntfs_cur_iRecord], 5 ; start parse from root cluster |
||
2288 | clevermous | 1087 | .doit2: |
3742 | clevermous | 1088 | mov [ebp+NTFS.ntfs_cur_attr], 0x90 ; $INDEX_ROOT |
1089 | and [ebp+NTFS.ntfs_cur_offs], 0 |
||
1090 | mov eax, [ebp+NTFS.cur_index_size] |
||
1091 | mov [ebp+NTFS.ntfs_cur_size], eax |
||
1092 | mov eax, [ebp+NTFS.cur_index_buf] |
||
1093 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
2288 | clevermous | 1094 | call ntfs_read_attr |
1095 | jnc @f |
||
1096 | .ret: |
||
3742 | clevermous | 1097 | ret 4 |
2288 | clevermous | 1098 | @@: |
3742 | clevermous | 1099 | xor eax, eax |
1100 | cmp [ebp+NTFS.ntfs_cur_read], 0x20 |
||
2288 | clevermous | 1101 | jc .ret |
1102 | pushad |
||
3742 | clevermous | 1103 | mov esi, [ebp+NTFS.cur_index_buf] |
2288 | clevermous | 1104 | mov eax, [esi+14h] |
1105 | add eax, 10h |
||
3742 | clevermous | 1106 | cmp [ebp+NTFS.ntfs_cur_read], eax |
2288 | clevermous | 1107 | jae .readok1 |
1108 | add eax, 1FFh |
||
1109 | shr eax, 9 |
||
3742 | clevermous | 1110 | cmp eax, [ebp+NTFS.cur_index_size] |
2288 | clevermous | 1111 | ja @f |
1112 | .stc_ret: |
||
1113 | popad |
||
1114 | stc |
||
3742 | clevermous | 1115 | ret 4 |
2288 | clevermous | 1116 | @@: |
1117 | ; reallocate |
||
1118 | push eax |
||
3742 | clevermous | 1119 | push [ebp+NTFS.cur_index_buf] |
2288 | clevermous | 1120 | call kernel_free |
1121 | pop eax |
||
3742 | clevermous | 1122 | mov [ebp+NTFS.cur_index_size], eax |
2288 | clevermous | 1123 | push eax |
1124 | call kernel_alloc |
||
1125 | test eax, eax |
||
1126 | jnz @f |
||
3742 | clevermous | 1127 | and [ebp+NTFS.cur_index_size], 0 |
1128 | and [ebp+NTFS.cur_index_buf], 0 |
||
2288 | clevermous | 1129 | jmp .stc_ret |
1130 | @@: |
||
3742 | clevermous | 1131 | mov [ebp+NTFS.cur_index_buf], eax |
2288 | clevermous | 1132 | popad |
1133 | jmp .doit2 |
||
1134 | .readok1: |
||
3742 | clevermous | 1135 | mov edx, [esi+8] ; subnode_size |
1136 | shr edx, 9 |
||
1137 | cmp edx, [ebp+NTFS.cur_index_size] |
||
2288 | clevermous | 1138 | jbe .ok2 |
3742 | clevermous | 1139 | push esi edx |
1140 | push edx |
||
2288 | clevermous | 1141 | call kernel_alloc |
3742 | clevermous | 1142 | pop edx esi |
2288 | clevermous | 1143 | test eax, eax |
1144 | jz .stc_ret |
||
1145 | mov edi, eax |
||
3742 | clevermous | 1146 | mov ecx, [ebp+NTFS.cur_index_size] |
2288 | clevermous | 1147 | shl ecx, 9-2 |
1148 | rep movsd |
||
1149 | mov esi, eax |
||
3742 | clevermous | 1150 | mov [ebp+NTFS.cur_index_size], edx |
1151 | push esi edx |
||
1152 | push [ebp+NTFS.cur_index_buf] |
||
2288 | clevermous | 1153 | call kernel_free |
3742 | clevermous | 1154 | pop edx esi |
1155 | mov [ebp+NTFS.cur_index_buf], esi |
||
2288 | clevermous | 1156 | .ok2: |
1157 | add esi, 10h |
||
1158 | mov edi, [esp+4] |
||
3742 | clevermous | 1159 | ; edi -> name, esi -> current index data, edx = subnode size |
2288 | clevermous | 1160 | .scanloop: |
1161 | add esi, [esi] |
||
1162 | .scanloopint: |
||
1163 | test byte [esi+0Ch], 2 |
||
1164 | jnz .subnode |
||
1165 | push esi |
||
1166 | add esi, 0x52 |
||
1167 | movzx ecx, byte [esi-2] |
||
1168 | push edi |
||
1169 | @@: |
||
1170 | lodsw |
||
1171 | call unichar_toupper |
||
1172 | push eax |
||
1173 | mov al, [edi] |
||
1174 | inc edi |
||
1175 | cmp al, '/' |
||
1176 | jz .slash |
||
1177 | call char_toupper |
||
1178 | call ansi2uni_char |
||
1179 | cmp ax, [esp] |
||
1180 | pop eax |
||
1181 | loopz @b |
||
1182 | jz .found |
||
1183 | pop edi |
||
1184 | pop esi |
||
1185 | jb .subnode |
||
1186 | .scanloopcont: |
||
1187 | movzx eax, word [esi+8] |
||
1188 | add esi, eax |
||
1189 | jmp .scanloopint |
||
1190 | .slash: |
||
1191 | pop eax |
||
1192 | pop edi |
||
1193 | pop esi |
||
1194 | .subnode: |
||
1195 | test byte [esi+0Ch], 1 |
||
1196 | jz .notfound |
||
1197 | movzx eax, word [esi+8] |
||
1198 | mov eax, [esi+eax-8] |
||
3742 | clevermous | 1199 | imul eax, [ebp+NTFS.sectors_per_cluster] |
1200 | mov [ebp+NTFS.ntfs_cur_offs], eax |
||
1201 | mov [ebp+NTFS.ntfs_cur_attr], 0xA0 ; $INDEX_ALLOCATION |
||
1202 | mov [ebp+NTFS.ntfs_cur_size], edx |
||
1203 | mov eax, [ebp+NTFS.cur_index_buf] |
||
2288 | clevermous | 1204 | mov esi, eax |
3742 | clevermous | 1205 | mov [ebp+NTFS.ntfs_cur_buf], eax |
1206 | push edx |
||
2288 | clevermous | 1207 | call ntfs_read_attr |
3742 | clevermous | 1208 | pop edx |
1209 | mov eax, edx |
||
2288 | clevermous | 1210 | shl eax, 9 |
3742 | clevermous | 1211 | cmp [ebp+NTFS.ntfs_cur_read], eax |
2288 | clevermous | 1212 | jnz .notfound |
1213 | cmp dword [esi], 'INDX' |
||
1214 | jnz .notfound |
||
1215 | mov ebx, esi |
||
1216 | call ntfs_restore_usa |
||
1217 | jc .notfound |
||
1218 | add esi, 0x18 |
||
1219 | jmp .scanloop |
||
1220 | .notfound: |
||
1221 | popad |
||
1222 | stc |
||
3742 | clevermous | 1223 | ret 4 |
2288 | clevermous | 1224 | .found: |
1225 | cmp byte [edi], 0 |
||
1226 | jz .done |
||
1227 | cmp byte [edi], '/' |
||
1228 | jz .next |
||
1229 | pop edi |
||
1230 | pop esi |
||
1231 | jmp .scanloopcont |
||
1232 | .done: |
||
1233 | .next: |
||
1234 | pop esi |
||
1235 | pop esi |
||
1236 | mov eax, [esi] |
||
3742 | clevermous | 1237 | mov [ebp+NTFS.ntfs_cur_iRecord], eax |
2288 | clevermous | 1238 | mov [esp+1Ch], esi |
1239 | mov [esp+4], edi |
||
1240 | popad |
||
1241 | inc esi |
||
1242 | cmp byte [esi-1], 0 |
||
1243 | jnz .doit2 |
||
3742 | clevermous | 1244 | cmp dword [esp+4], 0 |
2288 | clevermous | 1245 | jz @f |
3742 | clevermous | 1246 | mov esi, [esp+4] |
1247 | mov dword [esp+4], 0 |
||
2288 | clevermous | 1248 | jmp .doit2 |
1249 | @@: |
||
3742 | clevermous | 1250 | ret 4 |
2288 | clevermous | 1251 | |
1252 | ;---------------------------------------------------------------- |
||
3742 | clevermous | 1253 | ; ntfs_Read - NTFS implementation of reading a file |
1254 | ; in: ebp = pointer to NTFS structure |
||
1255 | ; in: esi+[esp+4] = name |
||
1256 | ; in: ebx = pointer to parameters from sysfunc 70 |
||
1257 | ; out: eax, ebx = return values for sysfunc 70 |
||
1258 | ;---------------------------------------------------------------- |
||
1259 | ntfs_Read: |
||
2288 | clevermous | 1260 | cmp byte [esi], 0 |
1261 | jnz @f |
||
1262 | or ebx, -1 |
||
3598 | clevermous | 1263 | movi eax, ERROR_ACCESS_DENIED |
2288 | clevermous | 1264 | ret |
1265 | @@: |
||
3742 | clevermous | 1266 | call ntfs_lock |
1267 | stdcall ntfs_find_lfn, [esp+4] |
||
2288 | clevermous | 1268 | jnc .found |
3742 | clevermous | 1269 | call ntfs_unlock |
2288 | clevermous | 1270 | or ebx, -1 |
3598 | clevermous | 1271 | movi eax, ERROR_FILE_NOT_FOUND |
2288 | clevermous | 1272 | ret |
1273 | .found: |
||
3742 | clevermous | 1274 | mov [ebp+NTFS.ntfs_cur_attr], 0x80 ; $DATA |
1275 | and [ebp+NTFS.ntfs_cur_offs], 0 |
||
1276 | and [ebp+NTFS.ntfs_cur_size], 0 |
||
2288 | clevermous | 1277 | call ntfs_read_attr |
1278 | jnc @f |
||
3742 | clevermous | 1279 | call ntfs_unlock |
2288 | clevermous | 1280 | or ebx, -1 |
3598 | clevermous | 1281 | movi eax, ERROR_ACCESS_DENIED |
2288 | clevermous | 1282 | ret |
1283 | @@: |
||
1284 | pushad |
||
1285 | and dword [esp+10h], 0 |
||
1286 | xor eax, eax |
||
3742 | clevermous | 1287 | cmp dword [ebx+8], 0x200 |
2288 | clevermous | 1288 | jb @f |
1289 | .eof0: |
||
1290 | popad |
||
1291 | xor ebx, ebx |
||
1292 | .eof: |
||
3598 | clevermous | 1293 | movi eax, ERROR_END_OF_FILE |
3742 | clevermous | 1294 | push eax |
1295 | call ntfs_unlock |
||
1296 | pop eax |
||
2288 | clevermous | 1297 | ret |
1298 | @@: |
||
3742 | clevermous | 1299 | mov ecx, [ebx+12] |
1300 | mov edx, [ebx+16] |
||
1301 | mov eax, [ebx+4] |
||
2288 | clevermous | 1302 | test eax, 0x1FF |
1303 | jz .alignedstart |
||
1304 | push edx |
||
3742 | clevermous | 1305 | mov edx, [ebx+8] |
2288 | clevermous | 1306 | shrd eax, edx, 9 |
1400 | turbanoff | 1307 | pop edx |
3742 | clevermous | 1308 | mov [ebp+NTFS.ntfs_cur_offs], eax |
1309 | mov [ebp+NTFS.ntfs_cur_size], 1 |
||
1310 | lea eax, [ebp+NTFS.ntfs_bitmap_buf] |
||
1311 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
2288 | clevermous | 1312 | call ntfs_read_attr.continue |
3742 | clevermous | 1313 | mov eax, [ebx+4] |
2288 | clevermous | 1314 | and eax, 0x1FF |
3742 | clevermous | 1315 | lea esi, [ebp+NTFS.ntfs_bitmap_buf+eax] |
1316 | sub eax, [ebp+NTFS.ntfs_cur_read] |
||
2288 | clevermous | 1317 | jae .eof0 |
1318 | neg eax |
||
1319 | push ecx |
||
1320 | cmp ecx, eax |
||
1321 | jb @f |
||
1322 | mov ecx, eax |
||
1323 | @@: |
||
1324 | mov [esp+10h+4], ecx |
||
1325 | mov edi, edx |
||
1326 | rep movsb |
||
1327 | mov edx, edi |
||
1328 | pop ecx |
||
1329 | sub ecx, [esp+10h] |
||
1330 | jnz @f |
||
1331 | .retok: |
||
1332 | popad |
||
3742 | clevermous | 1333 | call ntfs_unlock |
2288 | clevermous | 1334 | xor eax, eax |
1400 | turbanoff | 1335 | ret |
2288 | clevermous | 1336 | @@: |
3742 | clevermous | 1337 | cmp [ebp+NTFS.ntfs_cur_read], 0x200 |
2288 | clevermous | 1338 | jz .alignedstart |
1339 | .eof_ebx: |
||
1340 | popad |
||
1341 | jmp .eof |
||
1342 | .alignedstart: |
||
3742 | clevermous | 1343 | mov eax, [ebx+4] |
2288 | clevermous | 1344 | push edx |
3742 | clevermous | 1345 | mov edx, [ebx+8] |
2288 | clevermous | 1346 | add eax, 511 |
1347 | adc edx, 0 |
||
1348 | shrd eax, edx, 9 |
||
1349 | pop edx |
||
1350 | .zero1: |
||
3742 | clevermous | 1351 | mov [ebp+NTFS.ntfs_cur_offs], eax |
1352 | mov [ebp+NTFS.ntfs_cur_buf], edx |
||
2288 | clevermous | 1353 | mov eax, ecx |
1354 | shr eax, 9 |
||
3742 | clevermous | 1355 | mov [ebp+NTFS.ntfs_cur_size], eax |
1356 | add eax, [ebp+NTFS.ntfs_cur_offs] |
||
2288 | clevermous | 1357 | push eax |
1358 | call ntfs_read_attr.continue |
||
3742 | clevermous | 1359 | pop [ebp+NTFS.ntfs_cur_offs] |
1360 | mov eax, [ebp+NTFS.ntfs_cur_read] |
||
2288 | clevermous | 1361 | add [esp+10h], eax |
1362 | mov eax, ecx |
||
1363 | and eax, not 0x1FF |
||
3742 | clevermous | 1364 | cmp [ebp+NTFS.ntfs_cur_read], eax |
2288 | clevermous | 1365 | jnz .eof_ebx |
1366 | and ecx, 0x1FF |
||
1367 | jz .retok |
||
3742 | clevermous | 1368 | add edx, [ebp+NTFS.ntfs_cur_read] |
1369 | mov [ebp+NTFS.ntfs_cur_size], 1 |
||
1370 | lea eax, [ebp+NTFS.ntfs_bitmap_buf] |
||
1371 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
2288 | clevermous | 1372 | call ntfs_read_attr.continue |
3742 | clevermous | 1373 | cmp [ebp+NTFS.ntfs_cur_read], ecx |
2288 | clevermous | 1374 | jb @f |
3742 | clevermous | 1375 | mov [ebp+NTFS.ntfs_cur_read], ecx |
2288 | clevermous | 1376 | @@: |
3742 | clevermous | 1377 | xchg ecx, [ebp+NTFS.ntfs_cur_read] |
2288 | clevermous | 1378 | push ecx |
1379 | mov edi, edx |
||
3742 | clevermous | 1380 | lea esi, [ebp+NTFS.ntfs_bitmap_buf] |
2288 | clevermous | 1381 | add [esp+10h+4], ecx |
1382 | rep movsb |
||
1383 | pop ecx |
||
1384 | xor eax, eax |
||
3742 | clevermous | 1385 | cmp ecx, [ebp+NTFS.ntfs_cur_read] |
2288 | clevermous | 1386 | jz @f |
1387 | mov al, ERROR_END_OF_FILE |
||
1388 | @@: |
||
1389 | mov [esp+1Ch], eax |
||
3742 | clevermous | 1390 | call ntfs_unlock |
2288 | clevermous | 1391 | popad |
1392 | ret |
||
1400 | turbanoff | 1393 | |
2288 | clevermous | 1394 | ;---------------------------------------------------------------- |
3742 | clevermous | 1395 | ; ntfs_ReadFolder - NTFS implementation of reading a folder |
1396 | ; in: ebp = pointer to NTFS structure |
||
1397 | ; in: esi+[esp+4] = name |
||
1398 | ; in: ebx = pointer to parameters from sysfunc 70 |
||
1399 | ; out: eax, ebx = return values for sysfunc 70 |
||
1400 | ;---------------------------------------------------------------- |
||
1401 | ntfs_ReadFolder: |
||
1402 | call ntfs_lock |
||
2288 | clevermous | 1403 | mov eax, 5 ; root cluster |
1404 | cmp byte [esi], 0 |
||
1405 | jz .doit |
||
3742 | clevermous | 1406 | stdcall ntfs_find_lfn, [esp+4] |
2288 | clevermous | 1407 | jnc .doit2 |
1408 | .notfound: |
||
1409 | or ebx, -1 |
||
1410 | push ERROR_FILE_NOT_FOUND |
||
1411 | .pop_ret: |
||
3742 | clevermous | 1412 | call ntfs_unlock |
2288 | clevermous | 1413 | pop eax |
1414 | ret |
||
1415 | .doit: |
||
3742 | clevermous | 1416 | mov [ebp+NTFS.ntfs_cur_iRecord], eax |
2288 | clevermous | 1417 | .doit2: |
3742 | clevermous | 1418 | mov [ebp+NTFS.ntfs_cur_attr], 0x10 ; $STANDARD_INFORMATION |
1419 | and [ebp+NTFS.ntfs_cur_offs], 0 |
||
1420 | mov [ebp+NTFS.ntfs_cur_size], 1 |
||
1421 | lea eax, [ebp+NTFS.ntfs_bitmap_buf] |
||
1422 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
2288 | clevermous | 1423 | call ntfs_read_attr |
1424 | jc .notfound |
||
3742 | clevermous | 1425 | mov [ebp+NTFS.ntfs_cur_attr], 0x90 ; $INDEX_ROOT |
1426 | and [ebp+NTFS.ntfs_cur_offs], 0 |
||
1427 | mov eax, [ebp+NTFS.cur_index_size] |
||
1428 | mov [ebp+NTFS.ntfs_cur_size], eax |
||
1429 | mov eax, [ebp+NTFS.cur_index_buf] |
||
1430 | mov [ebp+NTFS.ntfs_cur_buf], eax |
||
2288 | clevermous | 1431 | call ntfs_read_attr |
1432 | jnc .ok |
||
3742 | clevermous | 1433 | test eax, eax |
2288 | clevermous | 1434 | jz .notfound |
1435 | or ebx, -1 |
||
1436 | push 11 |
||
1437 | jmp .pop_ret |
||
1438 | .ok: |
||
3742 | clevermous | 1439 | cmp [ebp+NTFS.ntfs_cur_read], 0x20 |
2288 | clevermous | 1440 | jae @f |
1441 | or ebx, -1 |
||
1442 | .fserr: |
||
1443 | push ERROR_FAT_TABLE |
||
1444 | jmp .pop_ret |
||
1445 | @@: |
||
1446 | pushad |
||
3742 | clevermous | 1447 | mov esi, [ebp+NTFS.cur_index_buf] |
2288 | clevermous | 1448 | mov eax, [esi+14h] |
1449 | add eax, 10h |
||
3742 | clevermous | 1450 | cmp [ebp+NTFS.ntfs_cur_read], eax |
2288 | clevermous | 1451 | jae .readok1 |
1452 | add eax, 1FFh |
||
1453 | shr eax, 9 |
||
3742 | clevermous | 1454 | cmp eax, [ebp+NTFS.cur_index_size] |
2288 | clevermous | 1455 | ja @f |
1456 | popad |
||
1457 | jmp .fserr |
||
1458 | @@: |
||
1459 | ; reallocate |
||
1460 | push eax |
||
3742 | clevermous | 1461 | push [ebp+NTFS.cur_index_buf] |
2288 | clevermous | 1462 | call kernel_free |
1463 | pop eax |
||
3742 | clevermous | 1464 | mov [ebp+NTFS.cur_index_size], eax |
2288 | clevermous | 1465 | push eax |
1466 | call kernel_alloc |
||
1467 | test eax, eax |
||
1468 | jnz @f |
||
3742 | clevermous | 1469 | and [ebp+NTFS.cur_index_size], 0 |
1470 | and [ebp+NTFS.cur_index_buf], 0 |
||
2288 | clevermous | 1471 | .nomem: |
3742 | clevermous | 1472 | call ntfs_unlock |
2288 | clevermous | 1473 | popad |
1474 | or ebx, -1 |
||
3598 | clevermous | 1475 | movi eax, 12 |
2288 | clevermous | 1476 | ret |
1477 | @@: |
||
3742 | clevermous | 1478 | mov [ebp+NTFS.cur_index_buf], eax |
2288 | clevermous | 1479 | popad |
1480 | jmp .doit2 |
||
1481 | .readok1: |
||
3742 | clevermous | 1482 | mov edx, [esi+8] ; subnode_size |
1483 | shr edx, 9 |
||
1484 | mov [ebp+NTFS.cur_subnode_size], edx |
||
1485 | cmp edx, [ebp+NTFS.cur_index_size] |
||
2288 | clevermous | 1486 | jbe .ok2 |
3742 | clevermous | 1487 | push esi edx |
1488 | push edx |
||
2288 | clevermous | 1489 | call kernel_alloc |
3742 | clevermous | 1490 | pop edx esi |
2288 | clevermous | 1491 | test eax, eax |
1492 | jz .nomem |
||
1493 | mov edi, eax |
||
3742 | clevermous | 1494 | mov ecx, [ebp+NTFS.cur_index_size] |
2288 | clevermous | 1495 | shl ecx, 9-2 |
1496 | rep movsd |
||
1497 | mov esi, eax |
||
3742 | clevermous | 1498 | mov [ebp+NTFS.cur_index_size], edx |
1499 | push [ebp+NTFS.cur_index_buf] |
||
2288 | clevermous | 1500 | call kernel_free |
3742 | clevermous | 1501 | mov [ebp+NTFS.cur_index_buf], esi |
2288 | clevermous | 1502 | .ok2: |
1503 | add esi, 10h |
||
3742 | clevermous | 1504 | mov edx, [ebx+16] |
1505 | push dword [ebx+8] ; read ANSI/UNICODE name |
||
2288 | clevermous | 1506 | ; init header |
1507 | mov edi, edx |
||
1508 | mov ecx, 32/4 |
||
1509 | xor eax, eax |
||
1510 | rep stosd |
||
1511 | mov byte [edx], 1 ; version |
||
3742 | clevermous | 1512 | mov ecx, [ebx+12] |
1513 | mov ebx, [ebx+4] |
||
2288 | clevermous | 1514 | push edx |
1515 | mov edx, esp |
||
3742 | clevermous | 1516 | ; edi -> BDFE, esi -> current index data, ebx = first wanted block, |
2288 | clevermous | 1517 | ; ecx = number of blocks to read |
1518 | ; edx -> parameters block: dd |
||
3742 | clevermous | 1519 | cmp [ebp+NTFS.ntfs_cur_iRecord], 5 |
2288 | clevermous | 1520 | jz .skip_specials |
1521 | ; dot and dotdot entries |
||
1522 | push esi |
||
1523 | xor esi, esi |
||
1524 | call .add_special_entry |
||
1525 | inc esi |
||
1526 | call .add_special_entry |
||
1527 | pop esi |
||
1528 | .skip_specials: |
||
1529 | ; at first, dump index root |
||
1530 | add esi, [esi] |
||
1531 | .dump_root: |
||
1532 | test byte [esi+0Ch], 2 |
||
1533 | jnz .dump_root_done |
||
1534 | call .add_entry |
||
1535 | movzx eax, word [esi+8] |
||
1536 | add esi, eax |
||
1537 | jmp .dump_root |
||
1538 | .dump_root_done: |
||
1539 | ; now dump all subnodes |
||
1540 | push ecx edi |
||
3742 | clevermous | 1541 | lea edi, [ebp+NTFS.ntfs_bitmap_buf] |
1542 | mov [ebp+NTFS.ntfs_cur_buf], edi |
||
2288 | clevermous | 1543 | mov ecx, 0x400/4 |
1544 | xor eax, eax |
||
1545 | rep stosd |
||
3742 | clevermous | 1546 | mov [ebp+NTFS.ntfs_cur_attr], 0xB0 ; $BITMAP |
1547 | and [ebp+NTFS.ntfs_cur_offs], 0 |
||
1548 | mov [ebp+NTFS.ntfs_cur_size], 2 |
||
2288 | clevermous | 1549 | call ntfs_read_attr |
1550 | pop edi ecx |
||
1551 | push 0 ; save offset in $BITMAP attribute |
||
3742 | clevermous | 1552 | and [ebp+NTFS.ntfs_cur_offs], 0 |
2288 | clevermous | 1553 | .dumploop: |
3742 | clevermous | 1554 | mov [ebp+NTFS.ntfs_cur_attr], 0xA0 |
1555 | mov eax, [ebp+NTFS.cur_subnode_size] |
||
1556 | mov [ebp+NTFS.ntfs_cur_size], eax |
||
1557 | mov eax, [ebp+NTFS.cur_index_buf] |
||
2288 | clevermous | 1558 | mov esi, eax |
3742 | clevermous | 1559 | mov [ebp+NTFS.ntfs_cur_buf], eax |
1560 | push [ebp+NTFS.ntfs_cur_offs] |
||
1561 | mov eax, [ebp+NTFS.ntfs_cur_offs] |
||
1562 | imul eax, [ebp+NTFS.cur_subnode_size] |
||
1563 | mov [ebp+NTFS.ntfs_cur_offs], eax |
||
2288 | clevermous | 1564 | call ntfs_read_attr |
3742 | clevermous | 1565 | pop [ebp+NTFS.ntfs_cur_offs] |
1566 | mov eax, [ebp+NTFS.cur_subnode_size] |
||
2288 | clevermous | 1567 | shl eax, 9 |
3742 | clevermous | 1568 | cmp [ebp+NTFS.ntfs_cur_read], eax |
2288 | clevermous | 1569 | jnz .done |
1570 | push eax |
||
3742 | clevermous | 1571 | mov eax, [ebp+NTFS.ntfs_cur_offs] |
2288 | clevermous | 1572 | and eax, 0x400*8-1 |
3742 | clevermous | 1573 | bt dword [ebp+NTFS.ntfs_bitmap_buf], eax |
2288 | clevermous | 1574 | pop eax |
1575 | jnc .dump_subnode_done |
||
1576 | cmp dword [esi], 'INDX' |
||
1577 | jnz .dump_subnode_done |
||
1578 | push ebx |
||
1579 | mov ebx, esi |
||
1580 | call ntfs_restore_usa |
||
1581 | pop ebx |
||
1582 | jc .dump_subnode_done |
||
1583 | add esi, 0x18 |
||
1584 | add esi, [esi] |
||
1585 | .dump_subnode: |
||
1586 | test byte [esi+0Ch], 2 |
||
1587 | jnz .dump_subnode_done |
||
1588 | call .add_entry |
||
1589 | movzx eax, word [esi+8] |
||
1590 | add esi, eax |
||
1591 | jmp .dump_subnode |
||
1592 | .dump_subnode_done: |
||
3742 | clevermous | 1593 | inc [ebp+NTFS.ntfs_cur_offs] |
1594 | test [ebp+NTFS.ntfs_cur_offs], 0x400*8-1 |
||
2288 | clevermous | 1595 | jnz .dumploop |
3742 | clevermous | 1596 | mov [ebp+NTFS.ntfs_cur_attr], 0xB0 |
2288 | clevermous | 1597 | push ecx edi |
3742 | clevermous | 1598 | lea edi, [ebp+NTFS.ntfs_bitmap_buf] |
1599 | mov [ebp+NTFS.ntfs_cur_buf], edi |
||
2288 | clevermous | 1600 | mov ecx, 0x400/4 |
1601 | xor eax, eax |
||
1602 | rep stosd |
||
1603 | pop edi ecx |
||
1604 | pop eax |
||
3742 | clevermous | 1605 | push [ebp+NTFS.ntfs_cur_offs] |
2288 | clevermous | 1606 | inc eax |
3742 | clevermous | 1607 | mov [ebp+NTFS.ntfs_cur_offs], eax |
1608 | mov [ebp+NTFS.ntfs_cur_size], 2 |
||
2288 | clevermous | 1609 | push eax |
1610 | call ntfs_read_attr |
||
1611 | pop eax |
||
3742 | clevermous | 1612 | pop [ebp+NTFS.ntfs_cur_offs] |
2288 | clevermous | 1613 | push eax |
1614 | jmp .dumploop |
||
1615 | .done: |
||
1616 | pop eax |
||
1617 | pop edx |
||
1618 | mov ebx, [edx+4] |
||
1619 | pop edx |
||
1620 | xor eax, eax |
||
1621 | dec ecx |
||
1622 | js @f |
||
1623 | mov al, ERROR_END_OF_FILE |
||
1624 | @@: |
||
1625 | mov [esp+1Ch], eax |
||
1626 | mov [esp+10h], ebx |
||
3742 | clevermous | 1627 | call ntfs_unlock |
2288 | clevermous | 1628 | popad |
1629 | ret |
||
1630 | |||
1631 | .add_special_entry: |
||
1632 | mov eax, [edx] |
||
1633 | inc dword [eax+8] ; new file found |
||
1634 | dec ebx |
||
1635 | jns .ret |
||
1636 | dec ecx |
||
1637 | js .ret |
||
1638 | inc dword [eax+4] ; new file block copied |
||
1639 | mov eax, [edx+4] |
||
1640 | mov [edi+4], eax |
||
1641 | ; mov eax, dword [ntfs_bitmap_buf+0x20] |
||
1642 | ; or al, 0x10 |
||
1643 | mov eax, 0x10 |
||
1644 | stosd |
||
1645 | scasd |
||
1646 | push edx |
||
3742 | clevermous | 1647 | mov eax, dword [ebp+NTFS.ntfs_bitmap_buf] |
1648 | mov edx, dword [ebp+NTFS.ntfs_bitmap_buf+4] |
||
2288 | clevermous | 1649 | call ntfs_datetime_to_bdfe |
3742 | clevermous | 1650 | mov eax, dword [ebp+NTFS.ntfs_bitmap_buf+0x18] |
1651 | mov edx, dword [ebp+NTFS.ntfs_bitmap_buf+0x1C] |
||
2288 | clevermous | 1652 | call ntfs_datetime_to_bdfe |
3742 | clevermous | 1653 | mov eax, dword [ebp+NTFS.ntfs_bitmap_buf+8] |
1654 | mov edx, dword [ebp+NTFS.ntfs_bitmap_buf+0xC] |
||
2288 | clevermous | 1655 | call ntfs_datetime_to_bdfe |
1656 | pop edx |
||
1657 | xor eax, eax |
||
1658 | stosd |
||
1659 | stosd |
||
1660 | mov al, '.' |
||
1661 | push edi ecx |
||
1662 | lea ecx, [esi+1] |
||
1663 | test byte [edi-0x24], 1 |
||
1664 | jz @f |
||
1665 | rep stosw |
||
1666 | pop ecx |
||
1667 | xor eax, eax |
||
1668 | stosw |
||
1669 | pop edi |
||
1670 | add edi, 520 |
||
1671 | ret |
||
1672 | @@: |
||
1673 | rep stosb |
||
1674 | pop ecx |
||
1675 | xor eax, eax |
||
1676 | stosb |
||
1677 | pop edi |
||
1678 | add edi, 264 |
||
1679 | .ret: |
||
1680 | ret |
||
1681 | |||
1682 | .add_entry: |
||
1683 | ; do not return DOS 8.3 names |
||
1684 | cmp byte [esi+0x51], 2 |
||
1685 | jz .ret |
||
1686 | ; do not return system files |
||
1687 | ; ... note that there will be no bad effects if system files also were reported ... |
||
1688 | cmp dword [esi], 0x10 |
||
1689 | jb .ret |
||
1690 | mov eax, [edx] |
||
1691 | inc dword [eax+8] ; new file found |
||
1692 | dec ebx |
||
1693 | jns .ret |
||
1694 | dec ecx |
||
1695 | js .ret |
||
1696 | inc dword [eax+4] ; new file block copied |
||
1697 | mov eax, [edx+4] ; flags |
||
1698 | call ntfs_direntry_to_bdfe |
||
1699 | push ecx esi edi |
||
1700 | movzx ecx, byte [esi+0x50] |
||
1701 | add esi, 0x52 |
||
1702 | test byte [edi-0x24], 1 |
||
1703 | jz .ansi |
||
1704 | shr ecx, 1 |
||
1705 | rep movsd |
||
1706 | adc ecx, ecx |
||
1707 | rep movsw |
||
1708 | and word [edi], 0 |
||
1709 | pop edi |
||
1710 | add edi, 520 |
||
1711 | pop esi ecx |
||
1712 | ret |
||
1713 | .ansi: |
||
1714 | jecxz .skip |
||
1715 | @@: |
||
1716 | lodsw |
||
1717 | call uni2ansi_char |
||
1718 | stosb |
||
1719 | loop @b |
||
1720 | .skip: |
||
1721 | xor al, al |
||
1722 | stosb |
||
1723 | pop edi |
||
1724 | add edi, 264 |
||
1725 | pop esi ecx |
||
1726 | ret |
||
1727 | |||
1728 | ntfs_direntry_to_bdfe: |
||
1729 | mov [edi+4], eax ; ANSI/UNICODE name |
||
1730 | mov eax, [esi+48h] |
||
1731 | test eax, 0x10000000 |
||
1732 | jz @f |
||
1733 | and eax, not 0x10000000 |
||
1734 | or al, 0x10 |
||
1735 | @@: |
||
1736 | stosd |
||
1737 | scasd |
||
1738 | push edx |
||
1739 | mov eax, [esi+0x18] |
||
1740 | mov edx, [esi+0x1C] |
||
1741 | call ntfs_datetime_to_bdfe |
||
1742 | mov eax, [esi+0x30] |
||
1743 | mov edx, [esi+0x34] |
||
1744 | call ntfs_datetime_to_bdfe |
||
1745 | mov eax, [esi+0x20] |
||
1746 | mov edx, [esi+0x24] |
||
1747 | call ntfs_datetime_to_bdfe |
||
1748 | pop edx |
||
1749 | mov eax, [esi+0x40] |
||
1750 | stosd |
||
1751 | mov eax, [esi+0x44] |
||
1752 | stosd |
||
1753 | ret |
||
1754 | |||
1755 | iglobal |
||
1756 | _24 dd 24 |
||
1757 | _60 dd 60 |
||
1758 | _10000000 dd 10000000 |
||
1759 | days400year dd 365*400+100-4+1 |
||
1760 | days100year dd 365*100+25-1 |
||
1761 | days4year dd 365*4+1 |
||
1762 | days1year dd 365 |
||
1763 | months dd 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 |
||
1764 | months2 dd 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 |
||
1765 | _400 dd 400 |
||
1766 | _100 dd 100 |
||
1767 | endg |
||
1768 | |||
1769 | ntfs_datetime_to_bdfe: |
||
1770 | ; edx:eax = number of 100-nanosecond intervals since January 1, 1601, in UTC |
||
1771 | push eax |
||
1772 | mov eax, edx |
||
1773 | xor edx, edx |
||
1774 | div [_10000000] |
||
1775 | xchg eax, [esp] |
||
1776 | div [_10000000] |
||
1777 | pop edx |
||
1778 | .sec: |
||
1779 | ; edx:eax = number of seconds since January 1, 1601 |
||
1780 | push eax |
||
1781 | mov eax, edx |
||
1782 | xor edx, edx |
||
1783 | div [_60] |
||
1784 | xchg eax, [esp] |
||
1785 | div [_60] |
||
1786 | mov [edi], dl |
||
1787 | pop edx |
||
1788 | ; edx:eax = number of minutes |
||
1789 | div [_60] |
||
1790 | mov [edi+1], dl |
||
1791 | ; eax = number of hours (note that 2^64/(10^7*60*60) < 2^32) |
||
1792 | xor edx, edx |
||
1793 | div [_24] |
||
1794 | mov [edi+2], dl |
||
1795 | mov [edi+3], byte 0 |
||
1796 | ; eax = number of days since January 1, 1601 |
||
1797 | xor edx, edx |
||
1798 | div [days400year] |
||
1799 | imul eax, 400 |
||
1800 | add eax, 1601 |
||
1801 | mov [edi+6], ax |
||
1802 | mov eax, edx |
||
1803 | xor edx, edx |
||
1804 | div [days100year] |
||
1805 | cmp al, 4 |
||
1806 | jnz @f |
||
1807 | dec eax |
||
1808 | add edx, [days100year] |
||
1809 | @@: |
||
1810 | imul eax, 100 |
||
1811 | add [edi+6], ax |
||
1812 | mov eax, edx |
||
1813 | xor edx, edx |
||
1814 | div [days4year] |
||
1815 | shl eax, 2 |
||
1816 | add [edi+6], ax |
||
1817 | mov eax, edx |
||
1818 | xor edx, edx |
||
1819 | div [days1year] |
||
1820 | cmp al, 4 |
||
1821 | jnz @f |
||
1822 | dec eax |
||
1823 | add edx, [days1year] |
||
1824 | @@: |
||
1825 | add [edi+6], ax |
||
1826 | push esi edx |
||
1827 | mov esi, months |
||
1828 | movzx eax, word [edi+6] |
||
1829 | test al, 3 |
||
1830 | jnz .noleap |
||
1831 | xor edx, edx |
||
1832 | push eax |
||
1833 | div [_400] |
||
1834 | pop eax |
||
1835 | test edx, edx |
||
1836 | jz .leap |
||
1837 | xor edx, edx |
||
1838 | div [_100] |
||
1839 | test edx, edx |
||
1840 | jz .noleap |
||
1841 | .leap: |
||
1842 | mov esi, months2 |
||
1843 | .noleap: |
||
1844 | pop edx |
||
1845 | xor eax, eax |
||
1846 | inc eax |
||
1847 | @@: |
||
1848 | sub edx, [esi] |
||
1849 | jb @f |
||
1850 | add esi, 4 |
||
1851 | inc eax |
||
1852 | jmp @b |
||
1853 | @@: |
||
1854 | add edx, [esi] |
||
1855 | pop esi |
||
1856 | inc edx |
||
1857 | mov [edi+4], dl |
||
1858 | mov [edi+5], al |
||
1859 | add edi, 8 |
||
1860 | ret |
||
1861 | |||
1862 | ;---------------------------------------------------------------- |
||
3742 | clevermous | 1863 | ; ntfs_Rewrite - NTFS implementation of creating a new file |
1864 | ; in: ebp = pointer to NTFS structure |
||
1865 | ; in: esi+[esp+4] = name |
||
1866 | ; in: ebx = pointer to parameters from sysfunc 70 |
||
1867 | ; out: eax, ebx = return values for sysfunc 70 |
||
1868 | ;---------------------------------------------------------------- |
||
1869 | ntfs_Rewrite: |
||
1870 | ntfs_CreateFolder: |
||
2288 | clevermous | 1871 | xor ebx, ebx |
1872 | mov eax, ERROR_UNSUPPORTED_FS |
||
1873 | ret |
||
1874 | |||
1875 | ;---------------------------------------------------------------- |
||
3742 | clevermous | 1876 | ; ntfs_Write - NTFS implementation of writing to file |
1877 | ; in: ebp = pointer to NTFS structure |
||
1878 | ; in: esi+[esp+4] = name |
||
1879 | ; in: ebx = pointer to parameters from sysfunc 70 |
||
1880 | ; out: eax, ebx = return values for sysfunc 70 |
||
1881 | ;---------------------------------------------------------------- |
||
1882 | ntfs_Write: |
||
2288 | clevermous | 1883 | xor ebx, ebx |
1884 | mov eax, ERROR_UNSUPPORTED_FS |
||
1885 | ret |
||
1886 | |||
3742 | clevermous | 1887 | ntfs_SetFileEnd: |
1888 | ntfs_SetFileInfo: |
||
1889 | ntfs_Delete: |
||
2288 | clevermous | 1890 | mov eax, ERROR_UNSUPPORTED_FS |
1891 | ret |
||
1892 | |||
3742 | clevermous | 1893 | ;---------------------------------------------------------------- |
1894 | ; ntfs_GetFileInfo - NTFS implementation of getting file info |
||
1895 | ; in: ebp = pointer to NTFS structure |
||
1896 | ; in: esi+[esp+4] = name |
||
1897 | ; in: ebx = pointer to parameters from sysfunc 70 |
||
1898 | ; out: eax, ebx = return values for sysfunc 70 |
||
1899 | ;---------------------------------------------------------------- |
||
1900 | ntfs_GetFileInfo: |
||
2288 | clevermous | 1901 | cmp byte [esi], 0 |
1902 | jnz @f |
||
3598 | clevermous | 1903 | movi eax, 2 |
2288 | clevermous | 1904 | ret |
1905 | @@: |
||
3742 | clevermous | 1906 | call ntfs_lock |
1907 | stdcall ntfs_find_lfn, [esp+4] |
||
2288 | clevermous | 1908 | jnc .doit |
3742 | clevermous | 1909 | test eax, eax |
3598 | clevermous | 1910 | movi eax, ERROR_FILE_NOT_FOUND |
2288 | clevermous | 1911 | jz @f |
1912 | mov al, 11 |
||
1913 | @@: |
||
3742 | clevermous | 1914 | push eax |
1915 | call ntfs_unlock |
||
1916 | pop eax |
||
2288 | clevermous | 1917 | ret |
1918 | .doit: |
||
1919 | push esi edi |
||
1920 | mov esi, eax |
||
3742 | clevermous | 1921 | mov edi, [ebx+16] |
2288 | clevermous | 1922 | xor eax, eax |
1923 | call ntfs_direntry_to_bdfe |
||
1924 | pop edi esi |
||
3742 | clevermous | 1925 | call ntfs_unlock |
2288 | clevermous | 1926 | xor eax, eax |
1927 | ret>=>=>=> |
||
1928 |