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NTFS: even more files in folders

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git-svn-id: svn://kolibrios.org@6411 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
pathoswithin 2016-04-30 06:52:50 +00:00
parent 845d2f0618
commit 2b5de6aa60
1 changed files with 56 additions and 10 deletions
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66
kernel/trunk/fs/ntfs.inc
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@ -1175,12 +1175,14 @@ ntfs_find_lfn:
; in: [esi]+[esp+4] = name
; out:
; [ebp+NTFS.cur_iRecord] = target fileRecord
; eax -> index in the target node
; eax -> target index in the node
; [ebp+NTFS.LastRead] = target node location
; [ebp+NTFS.indexPointer] -> index, that points the target subnode
; [ebp+NTFS.nodeLastRead] = branch node location
; [ebp+NTFS.indexRoot] -> attribute
; [ebp+NTFS.rootLastRead] = directory fileRecord location
; [ebp+NTFS.cur_size] = index record size in sectors
; [ebp+NTFS.cur_subnode_size] = index record size in clusters or sectors
; [ebp+NTFS.rootLastRead] = directory fileRecord sector
; CF=1 -> file not found, eax=0 -> error
mov [ebp+NTFS.cur_iRecord], 5 ; start from root directory
.doit2:
@ -1281,6 +1283,9 @@ ntfs_find_lfn:
.subnode:
test byte [esi+indexFlags], 1
jz .notfound
mov eax, [ebp+NTFS.LastRead]
mov [ebp+NTFS.nodeLastRead], eax
mov [ebp+NTFS.indexPointer], esi
movzx eax, word [esi+indexAllocatedSize]
mov eax, [esi+eax-8]
mov edx, [ebp+NTFS.cur_size]
@ -1289,7 +1294,6 @@ ntfs_find_lfn:
jz @f
mul [ebp+NTFS.sectors_per_cluster]
@@:
mov [ebp+NTFS.indexPointer], esi
mov esi, [ebp+NTFS.cur_index_buf]
xchg [ebp+NTFS.secondIndexBuffer], esi
mov [ebp+NTFS.cur_index_buf], esi
@ -1992,10 +1996,8 @@ ntfs_CreateFile:
mov edi, [ebp+NTFS.cur_index_buf]
jmp .common
.growTree:
xchg [ebp+NTFS.secondIndexBuffer], edi
mov [ebp+NTFS.cur_index_buf], edi
; create indexRecord
.growTree: ; create indexRecord
mov edi, [ebp+NTFS.cur_index_buf]
mov ecx, 10
xor eax, eax
rep stosd
@ -2027,6 +2029,8 @@ ntfs_CreateFile:
sub ecx, [esi+indexOffset]
add eax, ecx
mov [edi+nodeRealSize], eax
mov eax, [esi+nonLeafFlag]
mov [edi+nonLeafFlag], eax
shr ecx, 2
add esi, [esi+indexOffset]
add edi, [edi+indexOffset]
@ -2220,14 +2224,14 @@ ntfs_CreateFile:
add eax, 8
mov esi, [ebp+NTFS.secondIndexBuffer]
cmp dword [esi], 'INDX'
jz .errorPop3 ; move index to the branch node
jz @f
; move index to the root node
mov esi, [ebp+NTFS.frs_buffer]
mov ecx, eax
add ecx, 8
add ecx, [esi+recordRealSize]
cmp [esi+recordAllocatedSize], ecx
jc .errorPop3 ; tree grow required
jc .growTree
push edi eax
call .ntfsNodeAlloc
pop ecx edi
@ -2269,7 +2273,49 @@ ntfs_CreateFile:
rep movsd ; insert index
mov eax, [ebp+NTFS.newRecord]
stosd
; split node
jmp .splitNode
@@: ; move index to the branch node
add esi, recordNode
mov ecx, [esi+nodeRealSize]
add eax, ecx
cmp [esi+nodeAllocatedSize], eax
jc .errorPop3 ; tree grow required
mov [esi+nodeRealSize], eax
push edi
lea edi, [esi+eax-4]
add esi, ecx
sub eax, ecx
mov ecx, esi
sub ecx, [ebp+NTFS.indexPointer]
shr ecx, 2
sub esi, 4
std
rep movsd ; make space
mov [edi], ecx
mov edi, esi
add edi, 4
mov esi, [esp]
add word [esi+indexAllocatedSize], 8
mov byte [esi+indexFlags], 1
mov ecx, eax
sub ecx, 8
shr ecx, 2
cld
rep movsd ; insert index
push esi edi
call .ntfsNodeAlloc
pop edi esi ecx
jc ntfsErrorPop3
push ecx
mov eax, [ebp+NTFS.newRecord]
stosd
mov ebx, [ebp+NTFS.secondIndexBuffer]
mov edx, [ebp+NTFS.nodeLastRead]
push esi
call writeRecord
pop esi
.splitNode:
mov edi, [ebp+NTFS.cur_index_buf]
mov eax, edi
add eax, recordNode