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Rev | Author | Line No. | Line |
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431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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2465 | Serge | 3 | ;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;; |
431 | serge | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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7 | |||
593 | mikedld | 8 | $Revision: 3725 $ |
9 | |||
10 | |||
2434 | Serge | 11 | ;************************************************************* |
1410 | turbanoff | 12 | ;* 13.02.2010 Find all partition and check supported FS |
578 | mario79 | 13 | ;* 12.07.2007 Check all 4 entry of MBR and EMBR |
14 | ;* 29.04.2006 Elimination of hangup after the |
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15 | ;* expiration hd_wait_timeout - Mario79 |
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16 | ;* 28.01.2006 find all Fat16/32 partition in all input point |
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17 | ;* to MBR - Mario79 |
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65 | mario79 | 18 | ;************************************************************* |
19 | |||
277 | diamond | 20 | uglobal |
65 | mario79 | 21 | align 4 |
256 | diamond | 22 | |
65 | mario79 | 23 | ;****************************************************** |
431 | serge | 24 | ; Please do not change this place - variables in text |
65 | mario79 | 25 | ; Mario79 |
26 | ; START place |
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27 | ;****************************************************** |
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28 | PARTITION_START dd 0x3f |
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29 | PARTITION_END dd 0 |
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1410 | turbanoff | 30 | fs_type db 0 ; 1=NTFS, 2=EXT2/3, 16=FAT16, 32=FAT32 |
277 | diamond | 31 | align 4 |
256 | diamond | 32 | |
33 | fs_dependent_data_start: |
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34 | ; FATxx data |
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35 | |||
2987 | Serge | 36 | .partition dd ? |
37 | rb 80 |
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65 | mario79 | 38 | |
256 | diamond | 39 | fs_dependent_data_end: |
321 | diamond | 40 | file_system_data_size = $ - PARTITION_START |
41 | if file_system_data_size > 96 |
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2434 | Serge | 42 | ERROR: |
43 | sizeof(file system data) too big! |
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1379 | turbanoff | 44 | end if |
256 | diamond | 45 | |
46 | virtual at fs_dependent_data_start |
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47 | ; NTFS data |
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48 | ntfs_data: |
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49 | .sectors_per_cluster dd ? |
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50 | .mft_cluster dd ? |
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51 | .mftmirr_cluster dd ? |
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52 | .frs_size dd ? ; FRS size in bytes |
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53 | .iab_size dd ? ; IndexAllocationBuffer size in bytes |
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54 | .frs_buffer dd ? |
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55 | .iab_buffer dd ? |
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56 | .mft_retrieval dd ? |
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57 | .mft_retrieval_size dd ? |
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58 | .mft_retrieval_alloc dd ? |
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59 | .mft_retrieval_end dd ? |
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60 | .cur_index_size dd ? |
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61 | .cur_index_buf dd ? |
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62 | if $ > fs_dependent_data_end |
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2434 | Serge | 63 | ERROR: |
64 | increase sizeof(fs_dependent_data)! |
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256 | diamond | 65 | end if |
1379 | turbanoff | 66 | end virtual |
67 | |||
1378 | turbanoff | 68 | virtual at fs_dependent_data_start |
69 | ; EXT2 data |
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70 | ext2_data: |
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1379 | turbanoff | 71 | .log_block_size dd ? |
72 | .block_size dd ? |
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73 | .count_block_in_block dd ? |
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74 | .blocks_per_group dd ? |
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75 | .global_desc_table dd ? |
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2434 | Serge | 76 | .root_inode dd ? ; pointer to root inode in memory |
1379 | turbanoff | 77 | .inode_size dd ? |
2434 | Serge | 78 | .count_pointer_in_block dd ? ; block_size / 4 |
79 | .count_pointer_in_block_square dd ? ; (block_size / 4)**2 |
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3725 | Serge | 80 | .ext2_save_block dd ? ;RUS: блок на глобальную 1 процедуру ;ENG: block for 1 global procedure |
81 | .ext2_temp_block dd ? ;RUS: блок для мелких процедур ;ENG: block for small procedures |
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82 | .ext2_save_inode dd ? ;RUS: inode на глобальную процедуру ;ENG: inode for global procedure |
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83 | .ext2_temp_inode dd ? ;RUS: inode для мелких процедур ;ENG: inode for small procedures |
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2434 | Serge | 84 | .sb dd ? ; superblock |
1419 | turbanoff | 85 | .groups_count dd ? |
1378 | turbanoff | 86 | if $ > fs_dependent_data_end |
2434 | Serge | 87 | ERROR: |
88 | increase sizeof(fs_dependent_data)! |
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1378 | turbanoff | 89 | end if |
256 | diamond | 90 | end virtual |
1379 | turbanoff | 91 | |
65 | mario79 | 92 | ;*************************************************************************** |
93 | ; End place |
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94 | ; Mario79 |
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95 | ;*************************************************************************** |
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277 | diamond | 96 | endg |
97 | iglobal |
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65 | mario79 | 98 | |
99 | partition_types: ; list of fat16/32 partitions |
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100 | db 0x04 ; DOS: fat16 <32M |
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101 | db 0x06 ; DOS: fat16 >32M |
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102 | db 0x0b ; WIN95: fat32 |
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103 | db 0x0c ; WIN95: fat32, LBA-mapped |
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104 | db 0x0e ; WIN95: fat16, LBA-mapped |
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105 | db 0x14 ; Hidden DOS: fat16 <32M |
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106 | db 0x16 ; Hidden DOS: fat16 >32M |
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107 | db 0x1b ; Hidden WIN95: fat32 |
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108 | db 0x1c ; Hidden WIN95: fat32, LBA-mapped |
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109 | db 0x1e ; Hidden WIN95: fat16, LBA-mapped |
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110 | db 0xc4 ; DRDOS/secured: fat16 <32M |
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111 | db 0xc6 ; DRDOS/secured: fat16 >32M |
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112 | db 0xcb ; DRDOS/secured: fat32 |
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113 | db 0xcc ; DRDOS/secured: fat32, LBA-mapped |
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114 | db 0xce ; DRDOS/secured: fat16, LBA-mapped |
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115 | db 0xd4 ; Old Multiuser DOS secured: fat16 <32M |
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116 | db 0xd6 ; Old Multiuser DOS secured: fat16 >32M |
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256 | diamond | 117 | db 0x07 ; NTFS |
1379 | turbanoff | 118 | db 0x27 ; NTFS, hidden |
1378 | turbanoff | 119 | db 0x83 ; Linux native file system (ext2fs) |
65 | mario79 | 120 | partition_types_end: |
121 | |||
122 | |||
123 | extended_types: ; list of extended partitions |
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124 | db 0x05 ; DOS: extended partition |
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125 | db 0x0f ; WIN95: extended partition, LBA-mapped |
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126 | db 0xc5 ; DRDOS/secured: extended partition |
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127 | db 0xd5 ; Old Multiuser DOS secured: extended partition |
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128 | extended_types_end: |
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129 | |||
130 | endg |
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131 | |||
132 | ; Partition chain used: |
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1379 | turbanoff | 133 | ; MBR <--------------------- |
134 | ; | | |
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135 | ; |-> PARTITION1 | |
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136 | ; |-> EXTENDED PARTITION - ;not need be second partition |
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137 | ; |-> PARTITION3 |
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138 | ; |-> PARTITION4 |
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139 | |||
1378 | turbanoff | 140 | set_PARTITION_variables: |
141 | set_FAT32_variables: ;deprecated |
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2434 | Serge | 142 | and [problem_partition], 0 |
143 | call reserve_hd1 |
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144 | call reserve_hd_channel |
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65 | mario79 | 145 | |
2434 | Serge | 146 | pushad |
709 | diamond | 147 | |
2434 | Serge | 148 | cmp dword [hdpos], 0 |
149 | je problem_hd |
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65 | mario79 | 150 | |
2434 | Serge | 151 | xor ecx, ecx ; partition count |
1410 | turbanoff | 152 | ;or edx,-1 ; flag for partition |
2434 | Serge | 153 | xor eax, eax ; address MBR |
154 | xor ebp, ebp ; extended partition start |
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65 | mario79 | 155 | |
1378 | turbanoff | 156 | new_mbr: |
2434 | Serge | 157 | test ebp, ebp ; is there extended partition? (MBR or EMBR) |
158 | jnz extended_already_set; yes |
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159 | xchg ebp, eax ; no. set it now |
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65 | mario79 | 160 | |
161 | extended_already_set: |
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2434 | Serge | 162 | add eax, ebp ; mbr=mbr+0, ext_part=ext_start+relat_start |
163 | mov ebx, buffer |
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164 | call hd_read |
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165 | cmp [hd_error], 0 |
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166 | jne problem_hd |
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65 | mario79 | 167 | |
2434 | Serge | 168 | cmp word [ebx+0x1fe], 0xaa55; is it valid boot sector? |
169 | jnz end_partition_chain |
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170 | push eax ; push only one time |
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171 | cmp dword [ebx+0x1be+0xc], 0; skip over empty partition |
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172 | jnz test_primary_partition_0 |
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173 | cmp dword [ebx+0x1be+0xc+16], 0 |
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174 | jnz test_primary_partition_1 |
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175 | cmp dword [ebx+0x1be+0xc+16+16], 0 |
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176 | jnz test_primary_partition_2 |
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177 | cmp dword [ebx+0x1be+0xc+16+16+16], 0 |
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178 | jnz test_primary_partition_3 |
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179 | pop eax |
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180 | jmp end_partition_chain |
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1378 | turbanoff | 181 | |
182 | test_primary_partition_0: |
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2434 | Serge | 183 | mov al, [ebx+0x1be+4]; get primary partition type |
184 | call scan_partition_types |
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185 | jnz test_primary_partition_1; no. skip over |
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65 | mario79 | 186 | |
2434 | Serge | 187 | inc ecx |
188 | cmp ecx, [known_part]; is it wanted partition? |
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189 | jnz test_primary_partition_1; no |
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190 | |||
1410 | turbanoff | 191 | pop eax |
192 | ;mov edx, eax ; start sector |
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2434 | Serge | 193 | add eax, [ebx+0x1be+8] ; add relative start |
1410 | turbanoff | 194 | ;mov [PARTITON_START],edx |
2434 | Serge | 195 | ;push edx |
1410 | turbanoff | 196 | mov edx, [ebx+0x1be+12] ; length |
197 | ;add edx, eax ; add length |
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198 | ;dec edx ; PARTITION_END is inclusive |
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199 | ;mov [PARTITION_END], edx ; note that this can be changed |
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256 | diamond | 200 | ; when file system data will be available |
1410 | turbanoff | 201 | mov cl, [ebx+0x1be+4] ; fs_type |
202 | ;mov [fs_type], dl ; save for FS recognizer (separate FAT vs NTFS) |
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2434 | Serge | 203 | ;pop edx |
1410 | turbanoff | 204 | jmp hd_and_partition_ok |
256 | diamond | 205 | |
1378 | turbanoff | 206 | test_primary_partition_1: |
2434 | Serge | 207 | mov al, [ebx+0x1be+4+16]; get primary partition type |
208 | call scan_partition_types |
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209 | jnz test_primary_partition_2 ; no. skip over |
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65 | mario79 | 210 | |
2434 | Serge | 211 | inc ecx |
212 | cmp ecx, [known_part]; is it wanted partition? |
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213 | jnz test_primary_partition_2 ; no |
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65 | mario79 | 214 | |
2434 | Serge | 215 | pop eax |
216 | add eax, [ebx+0x1be+8+16] |
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217 | mov edx, [ebx+0x1be+12+16] |
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218 | mov cl, [ebx+0x1be+4+16] |
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219 | jmp hd_and_partition_ok |
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220 | |||
1410 | turbanoff | 221 | ;mov edx, eax |
222 | ;add edx, [ebx+0x1be+8+16] |
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223 | ;push edx |
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224 | ;add edx, [ebx+0x1be+12+16] |
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225 | ;dec edx |
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226 | ;mov [PARTITION_END], edx |
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227 | ;mov al, [ebx+0x1be+4+16] |
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228 | ;mov [fs_type], dl |
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229 | ;pop edx |
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65 | mario79 | 230 | |
1378 | turbanoff | 231 | test_primary_partition_2: |
2434 | Serge | 232 | mov al, [ebx+0x1be+4+16+16]; get primary partition type |
233 | call scan_partition_types |
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234 | jnz test_primary_partition_3 ; no. skip over |
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65 | mario79 | 235 | |
2434 | Serge | 236 | inc ecx |
237 | cmp ecx, [known_part]; is it wanted partition? |
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238 | jnz test_primary_partition_3 ; no |
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239 | |||
240 | pop eax |
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241 | add eax, [ebx+0x1be+8+16+16] |
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242 | mov edx, [ebx+0x1be+12+16+16] |
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243 | mov cl, [ebx+0x1be+4+16+16] |
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1410 | turbanoff | 244 | jmp hd_and_partition_ok |
245 | ;mov edx, eax |
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246 | ;add edx, [ebx+0x1be+8+16+16] |
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247 | ;push edx |
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248 | ;add edx, [ebx+0x1be+12+16+16] |
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249 | ;dec edx |
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250 | ;mov [PARTITION_END], edx |
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251 | ;mov al, [ebx+0x1be+4+16+16] |
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252 | ;mov [fs_type], dl |
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253 | ;pop edx |
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65 | mario79 | 254 | |
1378 | turbanoff | 255 | test_primary_partition_3: |
2434 | Serge | 256 | mov al, [ebx+0x1be+4+16+16+16]; get primary partition type |
257 | call scan_partition_types |
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258 | jnz test_ext_partition_0 ; no. skip over |
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65 | mario79 | 259 | |
2434 | Serge | 260 | inc ecx |
261 | cmp ecx, [known_part]; is it wanted partition? |
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262 | jnz test_ext_partition_0; no |
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65 | mario79 | 263 | |
2434 | Serge | 264 | pop eax |
265 | add eax, [ebx+0x1be+8+16+16+16] |
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266 | mov edx, [ebx+0x1be+12+16+16+16] |
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267 | mov cl, [ebx+0x1be+4+16+16+16] |
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268 | jmp hd_and_partition_ok |
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269 | |||
1410 | turbanoff | 270 | ;mov edx, eax |
271 | ;add edx, [ebx+0x1be+8+16+16+16] |
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272 | ;push edx |
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273 | ;add edx, [ebx+0x1be+12+16+16+16] |
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274 | ;dec edx |
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275 | ;mov [PARTITION_END], edx |
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276 | ;mov al, [ebx+0x1be+4+16+16+16] |
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277 | ;mov [fs_type], dl |
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278 | ;pop edx |
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65 | mario79 | 279 | |
2434 | Serge | 280 | test_ext_partition_0: |
3555 | Serge | 281 | pop eax ; просто выкидываем из стека |
2434 | Serge | 282 | mov al, [ebx+0x1be+4]; get extended partition type |
283 | call scan_extended_types |
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284 | jnz test_ext_partition_1 |
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65 | mario79 | 285 | |
2434 | Serge | 286 | mov eax, [ebx+0x1be+8]; add relative start |
287 | test eax, eax ; is there extended partition? |
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288 | jnz new_mbr ; yes. read it |
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65 | mario79 | 289 | |
1378 | turbanoff | 290 | test_ext_partition_1: |
2434 | Serge | 291 | mov al, [ebx+0x1be+4+16]; get extended partition type |
292 | call scan_extended_types |
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293 | jnz test_ext_partition_2 |
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65 | mario79 | 294 | |
2434 | Serge | 295 | mov eax, [ebx+0x1be+8+16]; add relative start |
296 | test eax, eax ; is there extended partition? |
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297 | jnz new_mbr ; yes. read it |
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65 | mario79 | 298 | |
1378 | turbanoff | 299 | test_ext_partition_2: |
2434 | Serge | 300 | mov al, [ebx+0x1be+4+16+16]; get extended partition type |
301 | call scan_extended_types |
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302 | jnz test_ext_partition_3 |
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65 | mario79 | 303 | |
2434 | Serge | 304 | mov eax, [ebx+0x1be+8+16+16]; add relative start |
305 | test eax, eax ; is there extended partition? |
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306 | jnz new_mbr ; yes. read it |
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1378 | turbanoff | 307 | |
308 | test_ext_partition_3: |
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2434 | Serge | 309 | mov al, [ebx+0x1be+4+16+16+16]; get extended partition type |
310 | call scan_extended_types |
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311 | jnz end_partition_chain; no. end chain |
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65 | mario79 | 312 | |
2434 | Serge | 313 | mov eax, [ebx+0x1be+8+16+16+16]; get start of extended partition |
314 | test eax, eax ; is there extended partition? |
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315 | jnz new_mbr ; yes. read it |
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1378 | turbanoff | 316 | |
65 | mario79 | 317 | end_partition_chain: |
1410 | turbanoff | 318 | ;mov [partition_count],ecx |
65 | mario79 | 319 | |
1410 | turbanoff | 320 | ;cmp edx,-1 ; found wanted partition? |
321 | ;jnz hd_and_partition_ok ; yes. install it |
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2434 | Serge | 322 | ;jmp problem_partition_or_fat |
323 | problem_hd: |
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324 | or [problem_partition], 2 |
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325 | jmp return_from_part_set |
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65 | mario79 | 326 | |
1410 | turbanoff | 327 | |
65 | mario79 | 328 | scan_partition_types: |
2434 | Serge | 329 | push ecx |
330 | mov edi, partition_types |
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331 | mov ecx, partition_types_end-partition_types |
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332 | cld |
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333 | repne scasb ; is partition type ok? |
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334 | pop ecx |
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335 | ret |
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65 | mario79 | 336 | |
337 | scan_extended_types: |
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2434 | Serge | 338 | push ecx |
339 | mov edi, extended_types |
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340 | mov ecx, extended_types_end-extended_types |
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341 | cld |
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342 | repne scasb ; is it extended partition? |
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343 | pop ecx |
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344 | ret |
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65 | mario79 | 345 | |
346 | problem_fat_dec_count: ; bootsector is missing or another problem |
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1410 | turbanoff | 347 | ; dec [partition_count] ; remove it from partition_count |
65 | mario79 | 348 | |
349 | problem_partition_or_fat: |
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2434 | Serge | 350 | or [problem_partition], 1 |
351 | |||
1410 | turbanoff | 352 | return_from_part_set: |
2434 | Serge | 353 | popad |
1410 | turbanoff | 354 | ;mov [fs_type],0 |
2434 | Serge | 355 | call free_hd_channel |
356 | mov [hd1_status], 0 ; free |
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357 | ret |
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65 | mario79 | 358 | |
2434 | Serge | 359 | hd_and_partition_ok: |
360 | |||
361 | ;eax = PARTITION_START edx=PARTITION_LENGTH cl=fs_type |
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362 | mov [fs_type], cl |
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1410 | turbanoff | 363 | ;mov eax,edx |
2434 | Serge | 364 | mov [PARTITION_START], eax |
365 | add edx, eax |
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366 | dec edx |
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367 | mov [PARTITION_END], edx |
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65 | mario79 | 368 | |
1410 | turbanoff | 369 | ; mov edx, [PARTITION_END] |
370 | ; sub edx, eax |
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3555 | Serge | 371 | ; inc edx ; edx = length of partition зачем оно нам?? |
1410 | turbanoff | 372 | |
256 | diamond | 373 | ; mov [hd_setup],1 |
2434 | Serge | 374 | mov ebx, buffer |
375 | call hd_read ; read boot sector of partition |
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256 | diamond | 376 | cmp [hd_error], 0 |
377 | jz boot_read_ok |
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378 | cmp [fs_type], 7 |
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379 | jnz problem_fat_dec_count |
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380 | ; NTFS duplicates bootsector: |
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381 | ; NT4/2k/XP+ saves bootsector copy in the end of disk |
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382 | ; NT 3.51 saves bootsector copy in the middle of disk |
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383 | and [hd_error], 0 |
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384 | mov eax, [PARTITION_END] |
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385 | call hd_read |
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386 | cmp [hd_error], 0 |
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387 | jnz @f |
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388 | call ntfs_test_bootsec |
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389 | jnc boot_read_ok |
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390 | @@: |
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391 | and [hd_error], 0 |
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392 | mov eax, edx |
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393 | shr eax, 1 |
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394 | add eax, [PARTITION_START] |
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395 | call hd_read |
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396 | cmp [hd_error], 0 |
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1378 | turbanoff | 397 | jnz problem_fat_dec_count ; no chance... |
256 | diamond | 398 | boot_read_ok: |
1378 | turbanoff | 399 | |
256 | diamond | 400 | ; if we are running on NTFS, check bootsector |
74 | mario79 | 401 | |
1378 | turbanoff | 402 | call ntfs_test_bootsec ; test ntfs |
1379 | turbanoff | 403 | jnc ntfs_setup |
404 | |||
405 | call ext2_test_superblock ; test ext2fs |
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1410 | turbanoff | 406 | jnc ext2_setup |
1379 | turbanoff | 407 | |
2434 | Serge | 408 | mov eax, [PARTITION_START] ;ext2 test changes [buffer] |
1410 | turbanoff | 409 | call hd_read |
1379 | turbanoff | 410 | cmp [hd_error], 0 |
1410 | turbanoff | 411 | jnz problem_fat_dec_count |
1378 | turbanoff | 412 | |
2987 | Serge | 413 | push 0 |
414 | mov eax, [PARTITION_END] |
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415 | sub eax, [PARTITION_START] |
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416 | inc eax |
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417 | push eax |
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418 | push 0 |
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419 | push [PARTITION_START] |
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420 | push ebp |
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421 | push ebp |
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422 | mov ebp, esp |
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423 | mov esi, 'old' ; special value: there is no DISK structure |
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424 | push 1 ; bootsector read successfully |
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425 | call fat_create_partition |
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426 | add esp, 4*7 |
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2434 | Serge | 427 | test eax, eax |
428 | jz problem_fat_dec_count |
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2987 | Serge | 429 | mov [fs_dependent_data_start.partition], eax |
430 | mov al, [eax+FAT.fs_type] |
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431 | mov [fs_type], al |
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65 | mario79 | 432 | |
2434 | Serge | 433 | popad |
434 | call free_hd_channel |
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435 | mov [hd1_status], 0 ; free |
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436 | ret--------------------- |