| 168,21 → 168,22 |
|---|
| pop ecx ebx eax |
| ret |
| ;=================================================================== |
| ; in: ecx = номер блока |
| ; in: ecx = номер блока в inode (0..) |
| ; ebp = адрес inode |
| ; out: ecx = адрес очередного блока |
| ext2_get_inode_block: |
| cmp ecx, 12 |
| jbe .get_direct_block |
| cmp ecx, 12 ; 0..11 - direct block address |
| jb .get_direct_block |
| |
| sub ecx, 12 |
| cmp ecx, [ext2_data.count_pointer_in_block] |
| jbe .get_indirect_block |
| cmp ecx, [ext2_data.count_pointer_in_block] ; 12.. - indirect block |
| jb .get_indirect_block |
| |
| sub ecx, [ext2_data.count_pointer_in_block] |
| cmp ecx, [ext2_data.count_pointer_in_block_square] |
| jbe .get_double_indirect_block |
| jb .get_double_indirect_block |
| |
| sub ecx, [ext2_data.count_pointer_in_block_square] |
| ;.get_triple_indirect_block: |
| push eax edx ebx |
| |
| 367,54 → 368,36 |
|---|
| endg |
| |
| ext2_HdReadFolder: |
| mov ebp, [ext2_data.root_inode] |
| mov [EXT2_read_in_folder], ebx |
| mov [EXT2_files_in_folder], ecx ;сохраним регистры |
| |
| .next_folder: |
| cmp byte [esi], 0 |
| jz .get_folder |
| jz .doit |
| |
| or [EXT2_counter_blocks], -1 ;счетчик блоков папки cur block of inode |
| mov eax, [ebp + EXT2_INODE_STRUC.i_blocks] ;убывающий счетчик блоков |
| add eax, [ext2_data.count_block_in_block] |
| mov [EXT2_end_block], eax |
| .next_block_folder: |
| mov eax, [ext2_data.count_block_in_block] |
| sub [EXT2_end_block], eax |
| jz .not_found |
| inc [EXT2_counter_blocks] |
| mov ecx, [EXT2_counter_blocks] |
| call ext2_get_inode_block |
| |
| mov eax, ecx |
| mov ebx, [ext2_data.ext2_save_block] ;ebx = cur dir record |
| call ext2_get_block |
| |
| mov eax, esi |
| call ext2_test_block_by_name |
| cmp eax, esi ;нашли имя? |
| je .next_block_folder |
| |
| cmp [ebx + EXT2_DIR_STRUC.file_type], EXT2_FT_DIR |
| jne .not_found ;нашли, но это не папка |
| mov eax, [ebx + EXT2_DIR_STRUC.inode] |
| mov ebx, [ext2_data.ext2_save_inode] ;все же папка. |
| call ext2_get_inode |
| mov ebp, ebx |
| jmp .next_folder |
| |
| push ecx ebx |
| call ext2_find_lfn |
| jnc .doit2 |
| pop ebx |
| .not_found: |
| pop ecx |
| or ebx, -1 |
| mov eax, ERROR_FILE_NOT_FOUND |
| ret |
| |
| .doit: |
| mov ebp, [ext2_data.root_inode] |
| push ecx |
| jmp @F |
| .doit2: |
| pop ebx |
| test [ebp + EXT2_INODE_STRUC.i_mode], EXT2_S_IFDIR |
| jz .not_found |
| @@: |
| xor eax, eax |
| mov edi, edx |
| mov ecx, 32/4 |
| rep stosd ; fill header zero |
| pop edi ; edi = число блоков для чтения |
| push edx ebx |
| |
| ;--------------------------------------------- final step |
| ; in ebp - pointer to final inode (folder). |
| .get_folder: |
| push edx ;заголовок будем заполнять в конце (адрес - в стеке) edx |
| push [EXT2_read_in_folder] ;сохраненный регистр тоже в стек |
| |
| mov edi, [EXT2_files_in_folder] ;edi = число блоков для чтения |
| and [EXT2_read_in_folder], 0 |
| and [EXT2_files_in_folder], 0 |
| |