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NTFS: thousands files in folders

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git-svn-id: svn://kolibrios.org@6414 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
pathoswithin 2016-05-02 06:02:41 +00:00
parent 6c4e2f8033
commit b18c400feb
1 changed files with 76 additions and 20 deletions
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96
kernel/trunk/fs/ntfs.inc
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@ -2181,13 +2181,40 @@ ntfs_CreateFile:
add esi, [esi+sizeWithHeader]
cmp byte [esi], 0xB0
jnz .ret
movzx eax, byte [esi+attributeOffset]
add esi, eax
mov eax, [esi]
movzx ecx, word [esi+sizeWithoutHeader]
shr ecx, 2
movzx edi, byte [esi+attributeOffset]
add edi, esi
mov edx, edi
or eax, -1
repz scasd
jnz @f
cmp [edi], eax
jnz .ret
; extend folder $Bitmap
add word [esi+sizeWithHeader], 8
add word [esi+sizeWithoutHeader], 8
mov esi, [ebp+NTFS.frs_buffer]
mov eax, [esi+recordRealSize]
add eax, 8
cmp [esi+recordAllocatedSize], eax
jc .ret
mov [esi+recordRealSize], eax
xor eax, eax
stosd
mov [edi], eax
mov [edi+8], eax
dec eax
mov [edi+4], eax
@@:
sub edi, 4
mov eax, [edi]
not eax
bsf eax, eax
jz .ret
bts [esi], eax
bts [edi], eax
sub edi, edx
shl edi, 3
add eax, edi
mul [ebp+NTFS.cur_subnode_size]
mov [ebp+NTFS.newRecord], eax
mov ecx, [ebp+NTFS.cur_size]
@ -2234,11 +2261,9 @@ ntfs_CreateFile:
jc .growTree
push edi eax
call .ntfsNodeAlloc
pop ecx edi
jc ntfsErrorPop3
push edi
jc ntfsErrorPop5
pop eax
mov edi, [ebp+NTFS.indexRoot]
mov eax, ecx
add [ebp+NTFS.attr_offs], eax
add [edi+sizeWithHeader], eax
add [edi+sizeWithoutHeader], eax
@ -2275,17 +2300,50 @@ ntfs_CreateFile:
stosd
jmp .splitNode
.growBranch: ; move node and replace it with empty one
mov esi, [ebp+NTFS.cur_index_buf]
mov edi, [ebp+NTFS.secondIndexBuffer]
mov eax, [esi+recordVCN]
mov [edi+recordVCN], eax
add edi, recordNode
mov eax, [edi+indexOffset]
add eax, 18h
mov [edi+nodeRealSize], eax
add edi, [edi+indexOffset]
mov ecx, 6
xor eax, eax
mov [ebp+NTFS.indexPointer], edi
push edi
rep stosd
pop edi
mov eax, [ebp+NTFS.newRecord]
mov byte [edi+indexAllocatedSize], 18h
mov byte [edi+indexFlags], 3
mov [edi+16], eax
mov [esi+recordVCN], eax
mov eax, [ebp+NTFS.LastRead]
mov [ebp+NTFS.nodeLastRead], eax
push [ebp+NTFS.cur_size]
mov [ebp+NTFS.cur_size], 0
call ntfs_read_attr.continue
pop [ebp+NTFS.cur_size]
movi eax, ERROR_FS_FAIL
jc ntfsErrorPop5
pop eax edi
@@: ; move index to the branch node
push edi eax
call .ntfsNodeAlloc
jc ntfsErrorPop5
mov eax, [esp]
mov esi, [ebp+NTFS.secondIndexBuffer]
add esi, recordNode
mov ecx, [esi+nodeRealSize]
add eax, ecx
cmp [esi+nodeAllocatedSize], eax
jc .errorPop3 ; tree grow required
jc .growBranch
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
@ -2293,21 +2351,16 @@ ntfs_CreateFile:
std
rep movsd ; make space
mov [edi], ecx
pop ecx
sub ecx, 8
shr ecx, 2
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]
@ -3996,6 +4049,9 @@ ntfsFail:
ntfsDiskFull:
push ERROR_DISK_FULL
jmp ntfsOut
ntfsErrorPop5:
pop ebx
pop ebx
ntfsErrorPop3:
pop ebx
ntfsErrorPop2: