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ext fs optimizing

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git-svn-id: svn://kolibrios.org@6726 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
pathoswithin 2016-11-18 14:43:26 +00:00
parent e9b1c1bac6
commit ba50660e2b
1 changed files with 321 additions and 406 deletions
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727
kernel/trunk/fs/ext.inc
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@ -625,89 +625,70 @@ extfsExtentAlloc:
xor ecx, ecx
jmp .ret
extfsGetFileBlock:
; in: esi -> inode, ecx = file block number
; out: ecx = block number
extfsGetExtent:
; in: ecx = starting file block
; out: eax = first block number, ecx = extent size
push ebx edx esi
lea esi, [ebp+EXTFS.inodeBuffer]
test [esi+INODE.featureFlags], EXTENTS_USED
jz .listTreeSearch
pushad
add esi, INODE.blockNumbers
.extentTreeSearch:
cmp word [esi+NODEHEADER.magic], 0xF30A
jne .fail
movzx ebx, [esi+NODEHEADER.entriesFolow]
add esi, sizeof.NODEHEADER
test ebx, ebx
jz .noBlock
cmp word [esi-sizeof.NODEHEADER+NODEHEADER.currentDepth], 0
je .leaf_block
test ebx, ebx
jz .fail ; empty
dec ebx
jz .end_search_index
@@:
cmp ebx, 1
je .end_search_index
cmp ecx, [esi+INDEX.fileBlock]
jb .fail
cmp ecx, [esi+sizeof.INDEX+INDEX.fileBlock]
jb .end_search_index
add esi, sizeof.INDEX
dec ebx
jmp @b
jnz @b
.end_search_index:
mov ebx, [ebp+EXTFS.tempBlockBuffer]
mov eax, [esi+INDEX.nodeBlock]
call extfsReadBlock
jc .fail
jc .fail2
mov esi, ebx
jmp .extentTreeSearch
.fail:
movi eax, ERROR_FS_FAIL
jmp .fail2
.leaf_block:
test ebx, ebx
jz .fail
mov edx, [esi+EXTENT.fileBlock]
cmp ecx, edx
jb .fail
movzx edi, [esi+EXTENT.blocksCount]
add edx, edi
cmp ecx, edx
jb .end_search_extent
movzx edx, [esi+EXTENT.blocksCount]
add edx, [esi+EXTENT.fileBlock]
sub edx, ecx
ja .end_search_extent
add esi, sizeof.EXTENT
dec ebx
jmp .leaf_block
.end_search_extent:
sub ecx, [esi+EXTENT.fileBlock]
add ecx, [esi+EXTENT.fsBlock]
mov PUSHAD_ECX, ecx
popad
xor eax, eax
ret
.fail:
popad
movi eax, ERROR_FS_FAIL
jnz .leaf_block
.noBlock:
movi eax, ERROR_END_OF_FILE
.fail2:
pop esi edx ebx
stc
ret
.get_indirect_block:
mov eax, [esi+INODE.addressBlock]
test eax, eax
jz .noBlock
mov ebx, [ebp+EXTFS.tempBlockBuffer]
call extfsReadBlock
jc .fail2
mov ecx, [ebx+ecx*4]
pop ebx edx
ret
.get_direct_block:
mov ecx, [esi+INODE.blockNumbers+ecx*4]
xor eax, eax
.end_search_extent:
sub ecx, [esi+EXTENT.fileBlock]
jc .fail
add ecx, [esi+EXTENT.fsBlock]
mov eax, ecx
mov ecx, edx
pop esi edx ebx
ret
.listTreeSearch:
cmp ecx, 12
jb .get_direct_block
push edx ebx
sub ecx, 12
cmp ecx, [ebp+EXTFS.dwordsPerBlock]
jb .get_indirect_block
@ -734,11 +715,22 @@ extfsGetFileBlock:
mov eax, edx
jmp @f
.noBlock:
xor ecx, ecx
.fail2:
pop ebx edx
ret
.get_direct_block:
mov edx, ecx
mov cl, 12
lea ebx, [esi+INODE.blockNumbers]
jmp .calculateExtent
.get_indirect_block:
mov eax, [esi+INODE.addressBlock]
test eax, eax
jz .noBlock
mov ebx, [ebp+EXTFS.tempBlockBuffer]
call extfsReadBlock
jc .fail2
mov edx, ecx
mov ecx, [ebp+EXTFS.dwordsPerBlock]
jmp .calculateExtent
.get_double_indirect_block:
mov eax, [esi+INODE.doubleAddress]
@ -750,58 +742,33 @@ extfsGetFileBlock:
mov eax, ecx
@@:
xor edx, edx
div [ebp+EXTFS.dwordsPerBlock]
mov ecx, [ebp+EXTFS.dwordsPerBlock]
div ecx
; eax = number in doubly-indirect block, edx = number in indirect block
mov eax, [ebx+eax*4]
test eax, eax
jz .noBlock
call extfsReadBlock
jc .fail2
mov ecx, [ebx+edx*4]
pop ebx edx
ret
extfsReadFileBlock:
; in:
; eax = file block number
; [ebp+EXTFS.inodeBuffer] = inode
; out:
; [ebp+EXTFS.mainBlockBuffer] -> block
push ebx ecx edx esi
mov ecx, eax
lea esi, [ebp+EXTFS.inodeBuffer]
call extfsGetFileBlock
jc .ret
test ecx, ecx
.calculateExtent:
lea esi, [ebx+edx*4]
lodsd
mov ebx, eax
sub ecx, edx
xor edx, edx
@@:
inc edx
dec ecx
jz @f
mov eax, ecx
mov ebx, [ebp+EXTFS.mainBlockBuffer]
call extfsReadBlock
.ret:
pop esi edx ecx ebx
ret
@@:
movi eax, ERROR_FS_FAIL
stc
jmp .ret
extfsWriteFileBlock:
; in:
; eax = file block number
; ebx -> data
; [ebp+EXTFS.inodeBuffer] = inode
push ecx edx esi
mov ecx, eax
lea esi, [ebp+EXTFS.inodeBuffer]
call extfsGetFileBlock
jc @f
test ecx, ecx
lodsd
sub eax, ebx
sub eax, edx
jz @b
mov eax, ecx
call extfsWriteBlock
@@:
pop esi edx ecx
mov eax, ebx
mov ecx, edx
pop esi edx ebx
clc
ret
getInodeLocation:
@ -1443,12 +1410,9 @@ linkInode:
push ecx ; current file block number
cmp eax, ecx
jz .alloc_block
call extfsGetFileBlock
call extfsGetExtent
jc .error_get_inode_block
test ecx, ecx
jz .alloc_block
push ecx
mov eax, ecx
push eax
mov ebx, [ebp+EXTFS.tempBlockBuffer]
call extfsReadBlock
jc .error_block_read
@ -1486,18 +1450,6 @@ linkInode:
inc ecx
jmp .searchBlock
.alloc_block:
mov ecx, [esi+INODE.fileSize]
add ecx, [ebp+EXTFS.bytesPerBlock]
mov eax, [esp+24]
call extfsExtendFile
jc .error_get_inode_block
mov eax, [esp+24]
mov ebx, esi
call writeInode
jc .error_get_inode_block
jmp @f
.zeroLength:
mov [edi+DIRENTRY.entryLength], cx
mov eax, edx
@ -1511,14 +1463,26 @@ linkInode:
mov ebx, [ebp+EXTFS.tempBlockBuffer]
call extfsWriteBlock
jc .error_get_inode_block
inc dword[esp]
@@:
mov ecx, [esp]
call extfsGetFileBlock
jc .error_get_inode_block
test ecx, ecx
jz .alloc_block
pop ecx
inc ecx
cmp ecx, [esp]
push ecx
jnz @f
.alloc_block:
mov ecx, [esi+INODE.fileSize]
add ecx, [ebp+EXTFS.bytesPerBlock]
mov eax, [esp+24]
call extfsExtendFile
jc .error_get_inode_block
mov eax, [esp+24]
mov ebx, esi
call writeInode
jc .error_get_inode_block
mov ecx, [esp]
@@:
call extfsGetExtent
jc .error_get_inode_block
push eax
mov edi, [ebp+EXTFS.tempBlockBuffer]
mov eax, [ebp+EXTFS.bytesPerBlock]
mov [edi+DIRENTRY.entryLength], ax
@ -1573,15 +1537,11 @@ unlinkInode:
call readInode
jc .fail
push eax
lea esi, [ebp+EXTFS.inodeBuffer]
.loop:
mov ecx, [esp]
call extfsGetFileBlock
call extfsGetExtent
jc .fail_loop
test ecx, ecx
jz .fail_loop
mov eax, ecx
mov edi, ecx
mov edi, eax
mov ebx, [ebp+EXTFS.tempBlockBuffer]
call extfsReadBlock
jc .fail_loop
@ -1685,11 +1645,8 @@ findInode:
xor ecx, ecx
.folder_block_cycle:
push ecx
xchg esi, edx
call extfsGetFileBlock
call extfsGetExtent
jc @b
xchg esi, edx
mov eax, ecx
mov ebx, [ebp+EXTFS.mainBlockBuffer]
call extfsReadBlock
jc @b
@ -1829,9 +1786,8 @@ ext_ReadFolder:
mov edi, esp ; edi -> local variables
add edx, 32
xor ecx, ecx
call extfsGetFileBlock
call extfsGetExtent
jc .error_get_block
mov eax, ecx
mov ebx, [ebp+EXTFS.mainBlockBuffer]
call extfsReadBlock
jc .error_get_block
@ -1863,9 +1819,8 @@ ext_ReadFolder:
inc dword [edi]
push ecx
mov ecx, [edi]
call extfsGetFileBlock
call extfsGetExtent
jc .error_get_block
mov eax, ecx
mov ebx, [ebp+EXTFS.mainBlockBuffer]
call extfsReadBlock
jc .error_get_block
@ -2001,131 +1956,111 @@ ext_ReadFolder:
;----------------------------------------------------------------
ext_ReadFile:
call ext_lock
push ERROR_ACCESS_DENIED
pushd 0 ERROR_ACCESS_DENIED
cmp byte [esi], 0
jz .error ; root
jz .ret ; root
mov [esp], ebx
call findInode
pop ebx
jc .error_eax
push ERROR_ACCESS_DENIED
push eax
jc .ret
lea esi, [ebp+EXTFS.inodeBuffer]
mov ax, [esi+INODE.accessMode]
and ax, TYPE_MASK
cmp ax, FLAG_FILE
jnz .error ; not a file
pop eax
mov edi, [ebx+16]
mov byte [esp], ERROR_ACCESS_DENIED
test [esi+INODE.accessMode], FLAG_FILE
jz .ret ; not a file
mov byte [esp], ERROR_END_OF_FILE
mov eax, [esi+INODE.fileSize]
mov edx, [esi+INODE.fileSizeHigh]
sub eax, [ebx+4]
sbb edx, [ebx+8]
jc .ret
mov ecx, [ebx+12]
sub eax, ecx
sbb edx, 0
jc @f
xor eax, eax
mov [esp], eax
@@:
add ecx, eax
mov eax, [ebx+4]
mov edx, [ebx+8]
push ERROR_END_OF_FILE
cmp [esi+INODE.fileSizeHigh], edx
ja @f
jb .error
cmp [esi+INODE.fileSize], eax
jna .error
@@:
add esp, 4
add eax, ecx
adc edx, 0
cmp [esi+INODE.fileSizeHigh], edx
ja .read_till_requested
jb .read_whole_file
cmp [esi+INODE.fileSize], eax
jae .read_till_requested
.read_whole_file:
push 1 ; read till the end of file
mov ecx, [esi+INODE.fileSize]
sub ecx, [ebx+4]
jmp @f
.read_till_requested:
push 0 ; read as much as requested
@@: ; ecx = bytes to read, edi -> buffer
push ecx
; read part of the first block
mov edx, [ebx+8]
mov eax, [ebx+4]
mov edi, [ebx+16]
div [ebp+EXTFS.bytesPerBlock]
push eax
push ecx
mov ecx, eax
call extfsGetFileBlock
jc .error_at_first_block
mov ebx, [ebp+EXTFS.mainBlockBuffer]
mov eax, ecx
call extfsReadBlock
jc .error_at_first_block
pop ecx
add ebx, edx
neg edx
add edx, [ebp+EXTFS.bytesPerBlock]
cmp ecx, edx
jbe .only_one_block
mov eax, ecx
sub eax, edx ; bytes to read
mov ecx, edx
push esi
mov esi, ebx
rep movsb
pop esi
mov ebx, edi
xor edx, edx
div [ebp+EXTFS.bytesPerBlock]
mov edi, eax
@@:
test edi, edi
jz .finish_block
inc dword [esp]
mov ecx, [esp]
call extfsGetFileBlock
jc .error_at_read_cycle
mov eax, ecx
call extfsReadBlock
jc .error_at_read_cycle
add ebx, [ebp+EXTFS.bytesPerBlock]
dec edi
jmp @b
.finish_block: ; edx = number of bytes in the last block
test edx, edx
jz .end_read
pop ecx ; block counter
inc ecx
call extfsGetFileBlock
jc .error_at_finish_block
mov edi, ebx
mov eax, ecx
jz .aligned
.piece:
push eax ecx
mov esi, edx
mov ecx, eax
call extfsGetExtent
jc .errorGet
mov ecx, [ebp+EXTFS.sectorsPerBlock]
mul ecx
mov ebx, [ebp+EXTFS.mainBlockBuffer]
call extfsReadBlock
jc .error_at_finish_block
push eax
mov ecx, edx
.only_one_block:
mov esi, ebx
rep movsb
.end_read:
call ext_unlock
pop eax ebx eax
call fs_read64_sys
test eax, eax
jz @f
movi eax, ERROR_END_OF_FILE
@@:
ret
.error_at_first_block:
pop ebx
.error_at_read_cycle:
pop ebx
.error_at_finish_block:
pop ebx ebx
.error_eax:
push eax
.error:
call ext_unlock
xor ebx, ebx
jnz .errorRead
pop eax
mov ecx, [ebp+EXTFS.bytesPerBlock]
sub ecx, esi
sub eax, ecx
jnc @f
add ecx, eax
xor eax, eax
@@:
add esi, ebx
add [esp+8], ecx
rep movsb
mov ecx, eax
pop eax
inc eax
xor edx, edx
jecxz .ret
.aligned:
xchg eax, ecx
div [ebp+EXTFS.bytesPerBlock]
push edx
mov edx, eax
.writeExtent:
test edx, edx
jz .end
push ecx
call extfsGetExtent
jc .errorGet
sub edx, ecx
jnc @f
add ecx, edx
xor edx, edx
@@:
add [esp], ecx
imul ecx, [ebp+EXTFS.sectorsPerBlock]
mov ebx, edi
push edx ecx
mul [ebp+EXTFS.sectorsPerBlock]
call fs_read64_sys
pop ecx edx
test eax, eax
jnz .errorRead
shl ecx, 9
add edi, ecx
add [esp+12], ecx
pop ecx
jmp .writeExtent
.end:
mov eax, ecx
pop ecx
jecxz .ret
jmp .piece
.errorRead:
movi eax, ERROR_DEVICE
.errorGet:
pop ebx ebx
mov [esp], eax
.ret:
call ext_unlock
pop eax ebx
ret
;----------------------------------------------------------------
@ -2227,15 +2162,12 @@ ext_Delete:
and edx, TYPE_MASK
cmp edx, DIRECTORY
jne .file
push ebx ecx edx 0
lea esi, [ebp+EXTFS.inodeBuffer]
push ebx ecx edx
xor ecx, ecx
.checkDirectory:
mov ecx, [esp]
call extfsGetFileBlock
jc .not_empty_eax
test ecx, ecx
jz .empty
mov eax, ecx
push ecx
call extfsGetExtent
jc .empty
mov ebx, [ebp+EXTFS.tempBlockBuffer]
call extfsReadBlock
jc .not_empty_eax
@ -2257,10 +2189,13 @@ ext_Delete:
add ebx, ecx
cmp ebx, edx
jb .dir_entry
inc dword[esp]
pop ecx
inc ecx
jmp .checkDirectory
.empty:
cmp eax, ERROR_END_OF_FILE
jnz .not_empty_eax
pop edx edx ecx ebx
.file:
mov eax, ecx
@ -2422,7 +2357,7 @@ parent_link db "..", 0
;----------------------------------------------------------------
ext_CreateFile:
call extfsWritingInit
push 0 ebx
pushd 0 0 ebx
call findInode
jnc .exist
test edi, edi
@ -2456,17 +2391,14 @@ ext_CreateFile:
call linkInode
jc .error2
pop esi ebx
push ebx esi
mov ecx, [ebx+12]
jmp ext_WriteFile.start
.exist:
lea edx, [ebp+EXTFS.inodeBuffer]
movi eax, ERROR_ACCESS_DENIED
test [edx+INODE.accessMode], FLAG_FILE
test [ebp+EXTFS.inodeBuffer.accessMode], FLAG_FILE
jz .error ; not a file
pop ebx
push ebx esi
mov ecx, [ebx+12]
call extfsTruncateFile
jmp ext_WriteFile.start
@ -2476,204 +2408,187 @@ ext_CreateFile:
.error:
push eax
call ext_unlock
pop eax ebx ebx
xor ebx, ebx
pop eax ebx ebx ebx
ret
;----------------------------------------------------------------
ext_WriteFile:
call extfsWritingInit
push 0 ebx
push ebx
call findInode
pop ebx
push ebx esi
jc .error
lea edx, [ebp+EXTFS.inodeBuffer]
movi eax, ERROR_ACCESS_DENIED
test [edx+INODE.accessMode], FLAG_FILE
jz .error ; not a file
pushd 0 eax
jc .ret
mov byte [esp], ERROR_ACCESS_DENIED
test [ebp+EXTFS.inodeBuffer.accessMode], FLAG_FILE
jz .ret ; not a file
mov ecx, [ebx+4]
add ecx, [ebx+12]
.start:
push esi
mov eax, esi
call extfsExtendFile
mov ecx, [ebx+12]
push eax
jc .error_inode_size
pop eax
jc .errorExtend
mov eax, [ebx+4]
mov ebx, [ebx+16]
push eax
mov ecx, [ebx+12]
mov esi, [ebx+16]
.write:
xor edx, edx
div [ebp+EXTFS.bytesPerBlock]
test edx, edx
jz .start_aligned
mov esi, [ebp+EXTFS.bytesPerBlock]
sub esi, edx
cmp esi, ecx
jbe @f
mov esi, ecx
@@:
mov edi, eax
call extfsReadFileBlock
jc .error_inode_size
mov eax, edi
push ebx ecx
mov ecx, esi
mov edi, [ebp+EXTFS.mainBlockBuffer]
mov esi, ebx
mov ebx, edi
add edi, edx
mov edx, ecx
rep movsb
call extfsWriteFileBlock
pop ecx ebx
jc .error_inode_size
add [esp], edx
add ebx, edx
sub ecx, edx
jz .write_inode
.start_aligned:
cmp ecx, [ebp+EXTFS.bytesPerBlock]
jb @f
mov eax, [esp]
xor edx, edx
div [ebp+EXTFS.bytesPerBlock]
call extfsWriteFileBlock
jc .error_inode_size
mov eax, [ebp+EXTFS.bytesPerBlock]
sub ecx, eax
add ebx, eax
add [esp], eax
jmp .start_aligned
@@: ; handle the remaining bytes
test ecx, ecx
jz .write_inode
mov eax, [esp]
xor edx, edx
div [ebp+EXTFS.bytesPerBlock]
push ecx
mov esi, ebx
mov edi, [ebp+EXTFS.mainBlockBuffer]
mov ebx, edi
rep movsb
pop ecx
call extfsWriteFileBlock
jc .error_inode_size
xor ecx, ecx
.error_inode_size:
mov [esp+12], eax
.write_inode:
lea ebx, [ebp+EXTFS.inodeBuffer]
pop eax eax
call writeInode
pop ebx
mov ebx, [ebx+12]
sub ebx, ecx
jz .aligned
.piece:
mov ebx, ecx
mov edi, edx
mov ecx, eax
push eax
call extfsGetExtent
jc .errorGet
mov ecx, [ebp+EXTFS.sectorsPerBlock]
mul ecx
push ecx eax ebx
mov ebx, [ebp+EXTFS.mainBlockBuffer]
call fs_read64_sys
test eax, eax
jz @f
mov [esp], eax
jnz .errorDevice
pop eax
mov ecx, [ebp+EXTFS.bytesPerBlock]
sub ecx, edi
sub eax, ecx
jnc @f
add ecx, eax
xor eax, eax
@@:
add edi, ebx
add [esp+20], ecx
rep movsb
mov edi, eax
pop eax ecx
xor edx, edx
call fs_write64_sys
mov ecx, edi
pop eax
inc eax
xor edx, edx
jecxz .done
.aligned:
xchg eax, ecx
div [ebp+EXTFS.bytesPerBlock]
push edx
mov edx, eax
.writeExtent:
test edx, edx
jz .end
push ecx
call extfsGetExtent
jc .errorGet2
sub edx, ecx
jnc @f
add ecx, edx
xor edx, edx
@@:
add [esp], ecx
imul ecx, [ebp+EXTFS.sectorsPerBlock]
mov ebx, esi
push edx ecx
mul [ebp+EXTFS.sectorsPerBlock]
call fs_write64_sys
test eax, eax
jnz .errorDevice
pop ebx edx ecx
shl ebx, 9
add esi, ebx
add [esp+12], ebx
jmp .writeExtent
.end:
mov eax, ecx
pop ecx
jecxz .done
jmp .piece
.errorDevice:
pop eax eax
movi eax, ERROR_DEVICE
.errorGet2:
pop ebx
.errorGet:
pop ebx
.errorExtend:
mov [esp+4], eax
.done:
lea ebx, [ebp+EXTFS.inodeBuffer]
pop eax
call writeInode
add [esp], eax
call writeSuperblock
mov esi, [ebp+PARTITION.Disk]
call disk_sync
@@:
.ret:
call ext_unlock
pop eax
pop eax ebx
ret
.error:
pop ebx ebx ebx
push eax
jmp @b
.erase:
push eax eax edx
mov eax, ebx
jmp .write
;----------------------------------------------------------------
ext_SetFileEnd:
call extfsWritingInit
pushd [ebx+4]
call findInode
pop ecx
jc .error2
lea edi, [ebp+EXTFS.inodeBuffer]
movi eax, ERROR_ACCESS_DENIED
cmp [edi+INODE.accessMode], FLAG_FILE
jnz .error2 ; not a file
pop ecx
test [edi+INODE.accessMode], FLAG_FILE
jz .error2 ; not a file
push esi
mov ebx, [edi+INODE.fileSize]
mov eax, esi
cmp ebx, ecx
jc @f
call extfsTruncateFile
jmp .done
@@:
jnc @f
call extfsExtendFile
jc .error
sub ecx, ebx
mov eax, ebx
xor edx, edx
div [ebp+EXTFS.bytesPerBlock]
cmp ecx, 1000001h
jnc .done
push ecx
stdcall kernel_alloc, ecx
pop ecx
test eax, eax
jz .error
push ecx
add ecx, 3
shr ecx, 2
mov esi, eax
mov edi, eax
test edx, edx
jz .start_aligned
call extfsReadFileBlock
jc .error
mov eax, [ebp+EXTFS.bytesPerBlock]
sub eax, edx
cmp eax, ecx
jbe @f
mov eax, ecx
@@:
mov ebx, [ebp+EXTFS.mainBlockBuffer]
push edi ecx
mov ecx, eax
mov edi, ebx
add edi, edx
xor eax, eax
mov edx, ecx
rep stosb
pop ecx edi
mov eax, edi
call extfsWriteFileBlock
jc .error
sub ecx, edx
jz .done
inc edi
.start_aligned:
mov eax, ecx
mov ecx, [ebp+EXTFS.bytesPerBlock]
dec eax
xor edx, edx
div ecx
inc eax
mov ebx, [ebp+EXTFS.mainBlockBuffer]
push eax edi
mov edi, ebx
rep stosd
pop ecx edx
push esi
call ext_WriteFile.erase
call kernel_free
xor eax, eax
rep stosb
pop edi ecx
ret
@@:
mov eax, edi
call extfsWriteFileBlock
jc .error
inc edi
loop @b
call extfsTruncateFile
.done:
xor eax, eax
.error:
xchg eax, [esp]
lea ebx, [ebp+EXTFS.inodeBuffer]
call writeInode
jnc @f
mov [esp], eax
@@:
add [esp], eax
call writeSuperblock
mov esi, [ebp+PARTITION.Disk]
call disk_sync
mov eax, [esp]
pop eax
.error2:
mov [esp], eax
push eax
call ext_unlock
pop eax
ret