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ext2fs 70.5 support. fix bugs

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git-svn-id: svn://kolibrios.org@1384 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
turbanoff 2010-02-01 18:47:19 +00:00
parent 87d9dd91ac
commit db4288650c
1 changed files with 107 additions and 22 deletions
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129
kernel/trunk/fs/ext2.inc
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@ -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