From be199bc49c6a6c03fa7c466b668232a9e019f286 Mon Sep 17 00:00:00 2001 From: pathoswithin Date: Sat, 4 Feb 2017 13:17:52 +0000 Subject: [PATCH] ext fs optimizing git-svn-id: svn://kolibrios.org@6853 a494cfbc-eb01-0410-851d-a64ba20cac60 --- kernel/trunk/fs/ext.inc | 186 ++++++++++++++++++---------------------- 1 file changed, 84 insertions(+), 102 deletions(-) diff --git a/kernel/trunk/fs/ext.inc b/kernel/trunk/fs/ext.inc index a6affc062..2c21cf074 100644 --- a/kernel/trunk/fs/ext.inc +++ b/kernel/trunk/fs/ext.inc @@ -1544,15 +1544,14 @@ linkInode: jmp @b unlinkInode: -; in: eax = inode from which to unlink, ebx = inode to unlink -; out: eax = current number of links to inode, -1 = error - push edx ebx +; in: eax = directory inode number, esi = inode to unlink + push edi lea ebx, [ebp+EXTFS.inodeBuffer] call readInode - jc .fail - push eax + jc .ret + xor ecx, ecx .loop: - mov ecx, [esp] + push ecx call extfsGetExtent jc .fail_loop mov edi, eax @@ -1560,64 +1559,48 @@ unlinkInode: call extfsReadBlock jc .fail_loop .first_dir_entry: ; edi -> block - mov eax, [esp+4] - cmp [ebx+DIRENTRY.inodeNumber], eax + cmp [ebx+DIRENTRY.inodeNumber], esi jne @f mov [ebx+DIRENTRY.inodeNumber], 0 mov word [ebx+DIRENTRY.nameLength], 0 ; fileType = 0 jmp .write_block +.fail: + pop edi + movi eax, ERROR_FS_FAIL + stc +.fail_loop: + pop edi + jmp .ret + +.next: + pop ecx ecx + inc ecx + jmp .loop + @@: mov edx, ebx add edx, [ebp+EXTFS.bytesPerBlock] push edx - mov edx, ebx +@@: movzx ecx, [ebx+DIRENTRY.entryLength] + jecxz .fail + mov edx, ebx add ebx, ecx -.dir_entry: - cmp [ebx+DIRENTRY.inodeNumber], eax - jne @f + cmp ebx, [esp] + jnc .next + cmp [ebx+DIRENTRY.inodeNumber], esi + jnz @b mov cx, [ebx+DIRENTRY.entryLength] add [edx+DIRENTRY.entryLength], cx pop eax - jmp .write_block - -@@: - mov edx, ebx - movzx ecx, [ebx+DIRENTRY.entryLength] - test ecx, ecx - jz .fail_inode - add ebx, ecx - cmp ebx, [esp] - jb .dir_entry - pop ecx - inc dword[esp] - jmp .loop - -.fail_inode: - pop eax -.fail_loop: - pop eax -.fail: - or eax, -1 - jmp @f - .write_block: pop eax mov eax, edi mov ebx, [ebp+EXTFS.tempBlockBuffer] call extfsWriteBlock - mov eax, [esp] - lea ebx, [ebp+EXTFS.inodeBuffer] - call readInode - jc .fail - dec word [ebx+INODE.linksCount] - mov eax, [esp] - call writeInode - jc .fail - movzx eax, word [ebx+INODE.linksCount] -@@: - pop ebx edx +.ret: + pop edi ret findInode: @@ -2161,16 +2144,12 @@ ext_SetFileInfo: ext_Delete: call extfsWritingInit call findInode - mov ebx, esi - push eax - jc .ret - pop eax - lea edx, [ebp+EXTFS.inodeBuffer] - movzx edx, [edx+INODE.accessMode] - and edx, TYPE_MASK - cmp edx, DIRECTORY + jc .error + push ecx + movzx edi, [ebp+EXTFS.inodeBuffer.accessMode] + and edi, TYPE_MASK + cmp edi, DIRECTORY jne .file - push ebx ecx edx xor ecx, ecx .checkDirectory: push ecx @@ -2178,60 +2157,70 @@ ext_Delete: jc .empty mov ebx, [ebp+EXTFS.tempBlockBuffer] call extfsReadBlock - jc .not_empty_eax + jc .error8 mov edx, ebx add edx, [ebp+EXTFS.bytesPerBlock] - movzx ecx, [ebx+DIRENTRY.entryLength] - add ebx, ecx .dir_entry: - cmp byte [ebx+DIRENTRY.nameLength], 1 - jne @f - cmp byte [ebx+DIRENTRY.name], '.' - jne .not_empty + movzx ecx, [ebx+DIRENTRY.nameLength] + mov ax, word [ebx+DIRENTRY.name] + jecxz @f + cmp al, '.' + jnz .not_empty + dec ecx + jz @f + cmp al, ah + jnz .not_empty + dec ecx + jnz .not_empty @@: - cmp byte [ebx+DIRENTRY.nameLength], 2 - jne .not_empty - cmp word [ebx+DIRENTRY.name], '..' - jne .not_empty - movzx ecx, [ebx+DIRENTRY.entryLength] + mov cx, [ebx+DIRENTRY.entryLength] + jecxz @f add ebx, ecx cmp ebx, edx jb .dir_entry +@@: pop ecx inc ecx jmp .checkDirectory .not_empty: pop eax eax -.error_stack8: - pop eax eax push ERROR_ACCESS_DENIED jmp .ret +.error8: + pop ebx +.error4: + pop ebx +.error: + push eax + jmp .ret + .empty: + pop ecx ecx cmp eax, ERROR_END_OF_FILE - jnz .not_empty_eax - pop edx edx ecx ebx + jnz .error + push ecx .file: mov eax, ecx - push ebx ecx call unlinkInode - cmp eax, -1 - je .error_stack8 - pop ebx - test eax, eax - jz @f - xor eax, eax - cmp edx, DIRECTORY - jnz .error_stack4_eax ; hardlinks - mov eax, [esp] - call unlinkInode -@@: - mov eax, [esp] + jc .error4 + pop eax lea ebx, [ebp+EXTFS.inodeBuffer] + cmp edi, DIRECTORY + jnz @f + dec [ebx+INODE.linksCount] + call writeInode +@@: + mov eax, esi call readInode - jc .error_stack4_eax - push edx + jc .error + dec [ebx+INODE.linksCount] + jz @f + cmp edi, DIRECTORY + jnz .hardlinks +@@: + push esi edi xor eax, eax xor edx, edx call extfsTruncateFile ; free file's data @@ -2241,13 +2230,10 @@ ext_Delete: push edi rep stosb call fsGetTime - pop ebx ecx + pop ebx edi esi add eax, 978307200 mov [ebx+INODE.deletedTime], eax - mov eax, [esp] - call writeInode - jc .error_stack4_eax - pop eax + mov eax, esi dec eax xor edx, edx div [ebp+EXTFS.superblock.inodesPerGroup] @@ -2255,7 +2241,7 @@ ext_Delete: mov ebx, [ebp+EXTFS.descriptorTable] shl eax, 5 add ebx, eax - cmp ecx, DIRECTORY + cmp edi, DIRECTORY jnz @f dec [ebx+BGDESCR.directoriesCount] @@: @@ -2266,9 +2252,9 @@ ext_Delete: mov ebx, [ebp+EXTFS.tempBlockBuffer] mov ecx, eax call extfsReadBlock - jc .error_stack4_eax - pop eax - mov edx, eax + pop edx + jc .error + mov eax, edx and edx, 31 shr eax, 5 shl eax, 2 @@ -2277,8 +2263,11 @@ ext_Delete: mov eax, ecx call extfsWriteBlock inc [ebp+EXTFS.superblock.inodesFree] +.hardlinks: + mov eax, esi + lea ebx, [ebp+EXTFS.inodeBuffer] + call writeInode push eax -.disk_sync: call writeSuperblock mov esi, [ebp+PARTITION.Disk] call disk_sync @@ -2288,13 +2277,6 @@ ext_Delete: pop eax ret -.not_empty_eax: - add esp, 12 -.error_stack4_eax: - pop ebx - push eax - jmp .disk_sync - ;---------------------------------------------------------------- ext_CreateFolder: call extfsWritingInit