From db4288650cf47cb2431dda6b08842fcc1ea9870a Mon Sep 17 00:00:00 2001 From: turbanoff Date: Mon, 1 Feb 2010 18:47:19 +0000 Subject: [PATCH] ext2fs 70.5 support. fix bugs git-svn-id: svn://kolibrios.org@1384 a494cfbc-eb01-0410-851d-a64ba20cac60 --- kernel/trunk/fs/ext2.inc | 129 ++++++++++++++++++++++++++++++++------- 1 file changed, 107 insertions(+), 22 deletions(-) diff --git a/kernel/trunk/fs/ext2.inc b/kernel/trunk/fs/ext2.inc index aa7e38a4ba..fb31baeebf 100644 --- a/kernel/trunk/fs/ext2.inc +++ b/kernel/trunk/fs/ext2.inc @@ -2,8 +2,8 @@ ;; ;; ;; Copyright (C) KolibriOS team 2004-2010. All rights reserved. ;; ;; Distributed under terms of the GNU General Public License ;; -;; ;; -;; 23.01.2010 turbanoff - read from ext2fs ;; +;; 02.02.2010 turbanoff - support 70.5 ;; +;; 23.01.2010 turbanoff - support 70.0 70.1 ;; ;; ;; ;; ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; @@ -18,8 +18,8 @@ EXT2_BOOT_LOADER_INO= 5 EXT2_UNDEL_DIR_INO = 6 ;type inode -EXT2_S_IFREG = 0x8000 -EXT2_S_IFDIR = 0x4000 +EXT2_S_IFREG = 0x8000 +EXT2_S_IFDIR = 0x4000 ;user inode right's EXT2_S_IRUSR = 0x0100 EXT2_S_IWUSR = 0x0080 @@ -122,7 +122,7 @@ ext2_setup: call kernel_alloc mov [ext2_data.ext2_temp_block], eax ; and for get_inode proc - mov ebp, [ebx+88] + movzx ebp, word [ebx+88] mov ecx, [ebx+32] mov edx, [ebx+40] mov eax, [ebx+20] ; first_data_block @@ -328,7 +328,7 @@ ext2_test_block_by_name: movzx eax, [ebx + EXT2_DIR_STRUC.rec_len] add ebx, eax ;к след. записи cmp ebx, edx ;проверим конец ли - jne .start_rec + jb .start_rec jmp .ret .test_find: @@ -418,8 +418,8 @@ ext2_HdReadFolder: and [EXT2_read_in_folder], 0 and [EXT2_files_in_folder], 0 - mov esi, [ebp + EXT2_INODE_STRUC.i_blocks] - mov [EXT2_counter_blocks], esi + mov eax, [ebp + EXT2_INODE_STRUC.i_blocks] + mov [EXT2_counter_blocks], eax add edx, 32 ;заголовок будем заполнять в конце (адрес - в стеке) edx = current mem for return xor esi, esi ;esi = номер блока по порядку @@ -449,7 +449,7 @@ ext2_HdReadFolder: movzx ebx, [eax+EXT2_DIR_STRUC.rec_len] add eax, ebx ; к следующей записи cmp eax, [EXT2_end_block] ; проверяем "конец" - je .end_block_find_wanted + jae .end_block_find_wanted loop .find_wanted_cycle .find_wanted_end: @@ -462,8 +462,15 @@ ext2_HdReadFolder: inc [EXT2_files_in_folder] inc [EXT2_read_in_folder] - test [eax + EXT2_DIR_STRUC.file_type], EXT2_FT_DIR ;папка или нет - jnz @F + mov edi, edx + push eax ecx + xor eax, eax + mov ecx, 40 / 4 + rep stosd + pop ecx eax + + cmp [eax + EXT2_DIR_STRUC.file_type], EXT2_FT_DIR ;папка или нет + jz @F push eax ;получим размер, если это файл mov eax, [eax + EXT2_DIR_STRUC.inode] @@ -477,7 +484,7 @@ ext2_HdReadFolder: pop eax @@: xor dword [edx], FS_FT_DIR - mov dword [edx+4], FS_FT_ASCII ; symbol type in name + or dword [edx+4], FS_FT_ASCII ; symbol type in name push ecx esi ;copy name movzx ecx, [eax + EXT2_DIR_STRUC.name_len] @@ -493,7 +500,7 @@ ext2_HdReadFolder: movzx ebx, [eax + EXT2_DIR_STRUC.rec_len] add eax, ebx cmp eax, [EXT2_end_block] - je .end_block_wanted + jae .end_block_wanted ;по хорошему должно быть =, но ччнш loop .wanted_cycle .wanted_end: ;теперь дойдем до конца чтобы узнать сколько файлов в папке @@ -570,7 +577,7 @@ ext2_HdReadFolder: ext2_HdRead: mov ebp, [ext2_data.root_inode] - push ecx edx ebx + push ecx edx ebx .next_folder: push esi @@: @@ -617,10 +624,11 @@ ext2_HdRead: cmp [ebx + EXT2_DIR_STRUC.file_type], EXT2_FT_REG_FILE je .test_file cmp [ebx + EXT2_DIR_STRUC.file_type], EXT2_FT_DIR - jne .not_found - .test_dir: + jne .this_is_nofile + + ;.test_dir: cmp edi, 0 - jne .this_is_folder + jne .this_is_nofile mov eax, [ebx + EXT2_DIR_STRUC.inode] mov ebx, [ext2_data.ext2_save_inode] ;все же папка. @@ -642,7 +650,7 @@ ext2_HdRead: or ebx, -1 mov eax, ERROR_FILE_NOT_FOUND ret - .this_is_folder: + .this_is_nofile: pop edx ecx ebx or ebx, -1 mov eax, ERROR_ACCESS_DENIED @@ -651,7 +659,6 @@ ext2_HdRead: ;-----------------------------------------------------------------------------final step .get_file: - xchg bx, bx mov ebp ,ebx ;pop eax edi ecx ; первый_блок память кол-во_байт @@ -781,7 +788,58 @@ ext2_HdRead: xor eax, eax ret ;======================== +;in : esi -> name not save register +;out: ebp -> inode cf=0 +; ebp -> trash cf=1 +ext2_find_lfn: + mov ebp, [ext2_data.root_inode] + .next_folder: + 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? + jz .next_block_folder + + cmp byte [esi],0 + jz .get_inode_ret + + 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 + + .not_found: + stc + ret + .get_inode_ret: + mov eax, [ebx + EXT2_DIR_STRUC.inode] + mov ebx, [ext2_data.ext2_save_inode] + call ext2_get_inode + mov ebp, ebx + .ret: + clc + ret + + +;======================== ext2_HdRewrite: ; xchg bx, bx xor ebx, ebx @@ -798,11 +856,38 @@ ext2_HdSetFileEnd: xor ebx, ebx mov eax, ERROR_UNSUPPORTED_FS ret + ext2_HdGetFileInfo: -; xchg bx, bx - xor ebx, ebx - mov eax, ERROR_UNSUPPORTED_FS + cmp byte [esi], 0 + jz .doit + + call ext2_find_lfn + jnc .doit2 + ;.not_found: + mov eax, ERROR_FILE_NOT_FOUND ret + + .doit: + mov ebp, [ext2_data.root_inode] + .doit2: + xor eax, eax + mov edi, edx + mov ecx, 40/4 + rep stosd ; fill zero + + test [ebp + EXT2_INODE_STRUC.i_mode], EXT2_S_IFDIR + jz @F + or dword [edx], FS_FT_DIR + @@: + mov byte [edx+1], FS_FT_ASCII + mov eax, [ebp + EXT2_INODE_STRUC.i_size] ;low size + mov ebx, [ebp + EXT2_INODE_STRUC.i_dir_acl] ;high size + mov dword [edx+32], eax + mov dword [edx+36], ebx + + xor eax, eax + ret + ext2_HdSetFileInfo: ; xchg bx, bx xor ebx, ebx