forked from KolibriOS/kolibrios
NTFS: more files in folders
git-svn-id: svn://kolibrios.org@6292 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
pathoswithin
parent
2a32370a8a
commit
ac3100f5b1
@ -121,6 +121,7 @@ LastRead dd ? ; last readen block of sectors
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newMftRecord dd ? ; number of fileRecord in MFT
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newMftRecord dd ? ; number of fileRecord in MFT
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fileDataStart dd ? ; starting cluster
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fileDataStart dd ? ; starting cluster
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fileDataSize dd ? ; in clusters
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fileDataSize dd ? ; in clusters
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fileDataBuffer dd ?
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fileRealSize dd ? ; in bytes
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fileRealSize dd ? ; in bytes
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indexOffset dd ?
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indexOffset dd ?
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nodeLastRead dd ?
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nodeLastRead dd ?
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@ -2093,18 +2094,19 @@ ntfs_CreateFile:
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mov edi, [ebp+NTFS.cur_index_buf]
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mov edi, [ebp+NTFS.cur_index_buf]
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push esi
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push esi
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push ecx
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push ecx
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mov edx, [ebx+12]
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mov [ebp+NTFS.fileRealSize], edx
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mov edx, [ebx+16]
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mov [ebp+NTFS.fileDataBuffer], edx
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mov edx, ecx
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cmp dword [edi], 'INDX'
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cmp dword [edi], 'INDX'
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jz .indexRecord
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jz .indexRecord
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mov esi, [ebp+NTFS.frs_buffer] ; indexRoot
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mov esi, [ebp+NTFS.frs_buffer] ; indexRoot
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mov edx, [esi+recordRealSize]
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mov ecx, [esi+recordRealSize]
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add edx, ecx
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add edx, ecx
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cmp [esi+recordAllocatedSize], edx
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cmp [esi+recordAllocatedSize], edx
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jnc @f
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jc .growTree
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add esp, 12
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jmp ntfsUnsupported ; indexAllocation required
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@@: ; index fits in the indexRoot
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mov [esi+recordRealSize], edx
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mov [esi+recordRealSize], edx
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mov ecx, edx
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shr ecx, 2
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shr ecx, 2
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rep movsd
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rep movsd
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mov edi, [ebp+NTFS.attr_offs]
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mov edi, [ebp+NTFS.attr_offs]
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@ -2120,27 +2122,167 @@ ntfs_CreateFile:
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sub eax, [ebp+NTFS.cur_index_buf]
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sub eax, [ebp+NTFS.cur_index_buf]
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add eax, edi
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add eax, edi
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mov edi, [ebp+NTFS.cur_index_buf]
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mov edi, [ebp+NTFS.cur_index_buf]
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add edi, edx
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sub edi, 4
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jmp .common
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jmp .common
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@@:
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add esp, 16
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jmp ntfsUnsupported
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.growTree:
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sub eax, rootNode
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sub eax, [edi+rootNode+indexOffset]
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push eax
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; create indexRecord
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mov ecx, 10
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xor eax, eax
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rep stosd
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rdtsc
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stosw
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mov esi, [ebp+NTFS.attr_offs]
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mov cl, [esi+attributeOffset]
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add esi, ecx
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mov eax, [esi+indexRecordSizeClus]
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cmp eax, 128
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jnc @b
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mov [ebp+NTFS.fileDataSize], eax
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mov eax, [esi+indexRecordSize]
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cmp eax, [ebp+NTFS.frs_size]
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jc @b
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shr eax, 9
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inc eax
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mov edi, [ebp+NTFS.cur_index_buf]
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mov dword[edi], 'INDX'
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mov byte [edi+updateSequenceOffset], 28h
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mov [edi+updateSequenceSize], al
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add edi, recordNode
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shl eax, 1
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add eax, 28h-recordNode+7
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and eax, not 7
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mov [edi+indexOffset], eax
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mov ecx, [esi+indexRecordSize]
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sub ecx, recordNode
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mov [edi+nodeAllocatedSize], ecx
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add esi, rootNode
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push esi
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mov ecx, [esi+nodeRealSize]
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sub ecx, [esi+indexOffset]
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add eax, ecx
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mov [edi+nodeRealSize], eax
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shr ecx, 2
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add esi, [esi+indexOffset]
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add edi, [edi+indexOffset]
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rep movsd ; copy root indexes
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; clear root node
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mov cl, 10
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mov edi, [esp]
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xor eax, eax
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rep stosd
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pop edi
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mov byte [edi+indexOffset], 16
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mov byte [edi+nodeRealSize], 28h
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mov byte [edi+nodeAllocatedSize], 28h
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mov byte [edi+nonLeafFlag], 1
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mov byte [edi+16+indexAllocatedSize], 18h
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mov byte [edi+16+indexFlags], 3
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mov esi, [ebp+NTFS.attr_offs]
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add edi, 28h
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mov eax, edi
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sub eax, esi
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mov word [esi+sizeWithoutHeader], 38h
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xchg [esi+sizeWithHeader], eax
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cmp byte [esi+eax], -1
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jnz @b
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mov cl, 32
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xor eax, eax
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push edi
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rep stosd
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mov edi, [ebp+NTFS.BitmapStart]
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call ntfsSpaceAlloc
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jnc @f
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add esp, 20
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jmp ntfsDiskFull
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@@: ; create $IndexAllocation
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pop edi
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mov byte [edi+attributeType], 0xA0
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mov byte [edi+nonResidentFlag], 1
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mov byte [edi+nameLength], 4
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mov byte [edi+nameOffset], 40h
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mov byte [edi+dataRunsOffset], 48h
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mov byte [edi+sizeWithHeader], 50h
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mov eax, [ebp+NTFS.fileDataSize]
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dec eax
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mov [edi+lastVCN], eax
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inc eax
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mul [ebp+NTFS.sectors_per_cluster]
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shl eax, 9
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mov [edi+attributeAllocatedSize], eax
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mov [edi+attributeRealSize], eax
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mov [edi+initialDataSize], eax
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mov dword[edi+40h], 490024h ; unicode $I30
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mov dword[edi+40h+4], 300033h
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push edi
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mov esi, edi
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add edi, 48h
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call createMcbEntry
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mov esi, [ebp+NTFS.frs_buffer]
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pop edi
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mov al, [esi+newAttributeID]
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mov [edi+attributeID], al
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add edi, 50h
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inc eax
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; create $Bitmap
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mov [edi+attributeID], al
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inc eax
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mov [esi+newAttributeID], al
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mov byte [edi+attributeType], 0xB0
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mov byte [edi+nameLength], 4
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mov byte [edi+nameOffset], 18h
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mov byte [edi+attributeOffset], 20h
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mov byte [edi+sizeWithoutHeader], 8
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mov byte [edi+sizeWithHeader], 28h
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mov dword[edi+18h], 490024h ; unicode $I30
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mov dword[edi+18h+4], 300033h
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mov byte [edi+20h], 1
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mov dword[edi+28h], -1
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add edi, 30h
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sub edi, esi
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mov [esi+recordRealSize], edi
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mov [ebp+NTFS.cur_buf], esi
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call writeRecord ; fileRecord
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mov eax, [ebp+NTFS.fileDataStart]
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mul [ebp+NTFS.sectors_per_cluster]
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mov [ebp+NTFS.LastRead], eax
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mov eax, [ebp+NTFS.cur_index_buf]
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mov [ebp+NTFS.cur_buf], eax
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call writeRecord ; indexRecord
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mov ebx, [ebp+NTFS.cur_index_buf]
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mov ax, [ebx+6]
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dec eax
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shl eax, 9
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call ntfs_restore_usa
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mov edi, [ebp+NTFS.cur_index_buf]
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pop eax
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add eax, recordNode
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add eax, [edi+recordNode+indexOffset]
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mov edx, [esp]
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.indexRecord:
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.indexRecord:
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add edi, recordNode
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add edi, recordNode
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mov edx, [edi+nodeRealSize]
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add edx, [edi+nodeRealSize]
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add edx, ecx
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cmp [edi+nodeAllocatedSize], edx
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cmp [edi+nodeAllocatedSize], edx
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jnc @f
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jnc @f
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add esp, 12
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add esp, 12
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jmp ntfsUnsupported ; new node required
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jmp ntfsUnsupported ; new node required
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@@: ; index fits in the node
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@@: ; index fits in the node
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mov [edi+nodeRealSize], edx
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mov [edi+nodeRealSize], edx
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.common:
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add edi, edx
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add edi, edx
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sub edi, 4
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sub edi, 4
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.common:
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mov esi, edi
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mov esi, edi
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sub esi, [esp]
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sub esi, [esp]
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mov ecx, esi
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mov ecx, esi
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sub ecx, eax ; eax = pointer in the node
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sub ecx, eax ; eax = pointer in the record
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shr ecx, 2
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shr ecx, 2
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inc ecx
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inc ecx
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std
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std
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@ -2163,15 +2305,15 @@ ntfs_CreateFile:
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mov eax, [ebp+NTFS.frs_buffer]
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mov eax, [ebp+NTFS.frs_buffer]
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mov eax, [eax+reuseCounter]
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mov eax, [eax+reuseCounter]
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mov [edi+directoryReferenceReuse], ax
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mov [edi+directoryReferenceReuse], ax
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mov eax, [ebx+12]
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mov eax, [ebp+NTFS.frs_size]
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shr eax, 8
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add ecx, 30h+48h+8+18h+8
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add ecx, 30h+48h+8+18h+8
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add ecx, eax
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add ecx, eax
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mov [ebp+NTFS.fileRealSize], eax
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mov eax, [ebp+NTFS.fileRealSize]
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add ecx, eax
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mov [edi+fileRealSize], eax
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mov [edi+fileRealSize], eax
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cmp [ebp+NTFS.frs_size], ecx
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cmp [ebp+NTFS.frs_size], ecx
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jc @f
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jc @f
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mov eax, [ebx+16]
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mov [ebp+NTFS.fileDataStart], eax
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xor eax, eax
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xor eax, eax
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@@:
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@@:
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mov ecx, [ebp+NTFS.sectors_per_cluster]
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mov ecx, [ebp+NTFS.sectors_per_cluster]
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@ -2207,12 +2349,12 @@ ntfs_CreateFile:
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mov edi, [ebp+NTFS.BitmapStart]
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mov edi, [ebp+NTFS.BitmapStart]
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call ntfsSpaceAlloc
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call ntfsSpaceAlloc
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jc ntfsDiskFull
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jc ntfsDiskFull
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mov [ebp+NTFS.fileDataStart], eax
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mov eax, [ebp+NTFS.fileDataStart]
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mul [ebp+NTFS.sectors_per_cluster]
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mul [ebp+NTFS.sectors_per_cluster]
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mov ecx, [ebp+NTFS.fileRealSize]
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mov ecx, [ebp+NTFS.fileRealSize]
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add ecx, 511
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add ecx, 511
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shr ecx, 9
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shr ecx, 9
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mov ebx, [ebx+16]
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mov ebx, [ebp+NTFS.fileDataBuffer]
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call fs_write64_app
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call fs_write64_app
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test eax, eax
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test eax, eax
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jnz ntfsDevice
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jnz ntfsDevice
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@ -2315,19 +2457,22 @@ ntfs_CreateFile:
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rep stosd
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rep stosd
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mov edi, [ebp+NTFS.frs_buffer]
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mov edi, [ebp+NTFS.frs_buffer]
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; record header
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; record header
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rdtsc
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mov [edi+2ah], ax
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mov eax, [ebp+NTFS.frs_size]
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mov eax, [ebp+NTFS.frs_size]
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mov [edi+recordAllocatedSize], eax
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mov [edi+recordAllocatedSize], eax
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shr eax, 9
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shr eax, 9
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inc eax
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inc eax
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mov [edi+updateSequenceSize], al
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mov [edi+updateSequenceSize], al
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shl eax, 1
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add eax, 2ah+7
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and eax, not 7
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mov dword[edi], 'FILE'
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mov dword[edi], 'FILE'
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mov byte [edi+updateSequenceOffset], 2ah
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mov byte [edi+updateSequenceOffset], 2ah
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mov byte [edi+hardLinkCounter], 1
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mov byte [edi+hardLinkCounter], 1
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mov byte [edi+attributeOffset], 30h
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mov byte [edi+newAttributeID], 3
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mov byte [edi+newAttributeID], 3
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rdtsc
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mov [edi+attributeOffset], al
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mov [edi+2ah], ax
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add edi, eax
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add edi, 30h
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; $StandardInformation
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; $StandardInformation
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mov byte [edi+attributeType], 10h
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mov byte [edi+attributeType], 10h
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mov byte [edi+sizeWithHeader], 48h
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mov byte [edi+sizeWithHeader], 48h
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@ -2381,7 +2526,7 @@ ntfs_CreateFile:
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mov [edi+sizeWithoutHeader], ecx
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mov [edi+sizeWithoutHeader], ecx
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mov byte [edi+attributeOffset], 18h
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mov byte [edi+attributeOffset], 18h
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push edi
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push edi
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mov esi, [ebp+NTFS.fileDataStart]
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mov esi, [ebp+NTFS.fileDataBuffer]
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add edi, 18h
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add edi, 18h
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rep movsb
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rep movsb
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@@:
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@@:
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@ -2393,7 +2538,7 @@ ntfs_CreateFile:
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mov [edi+sizeWithHeader], eax
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mov [edi+sizeWithHeader], eax
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add edi, eax
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add edi, eax
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mov al, 1
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mov al, 1
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jmp @f
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jmp .end
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.indexRoot:
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.indexRoot:
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mov byte [edi+attributeType], 90h
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mov byte [edi+attributeType], 90h
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@ -2406,9 +2551,16 @@ ntfs_CreateFile:
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mov byte [edi+20h+indexedAttributesType], 30h
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mov byte [edi+20h+indexedAttributesType], 30h
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mov byte [edi+20h+collationRule], 1
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mov byte [edi+20h+collationRule], 1
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mov eax, [ebp+NTFS.sectors_per_cluster]
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mov eax, [ebp+NTFS.sectors_per_cluster]
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shl eax, 9
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mov dl, 1
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shl eax, 8
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@@:
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shl eax, 1
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shl edx, 1
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cmp eax, [ebp+NTFS.frs_size]
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jc @b
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shr edx, 1
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mov [edi+20h+indexRecordSize], eax
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mov [edi+20h+indexRecordSize], eax
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mov byte [edi+20h+indexRecordSizeClus], 1
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mov [edi+20h+indexRecordSizeClus], dl
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mov byte [edi+30h+indexOffset], 16
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mov byte [edi+30h+indexOffset], 16
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mov byte [edi+30h+nodeRealSize], 32
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mov byte [edi+30h+nodeRealSize], 32
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mov byte [edi+30h+nodeAllocatedSize], 32
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mov byte [edi+30h+nodeAllocatedSize], 32
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@ -2416,7 +2568,7 @@ ntfs_CreateFile:
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mov byte [edi+40h+indexFlags], 2
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mov byte [edi+40h+indexFlags], 2
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add edi, 50h
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add edi, 50h
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mov al, 3
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mov al, 3
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@@:
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.end:
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mov esi, [ebp+NTFS.frs_buffer]
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mov esi, [ebp+NTFS.frs_buffer]
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mov dword [edi], -1
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mov dword [edi], -1
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mov dword [edi+4], 0
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mov dword [edi+4], 0
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@ -2426,8 +2578,6 @@ ntfs_CreateFile:
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mov [esi+recordFlags], al
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mov [esi+recordFlags], al
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mov [esi+recordRealSize], edi
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mov [esi+recordRealSize], edi
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call writeRecord
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call writeRecord
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test eax, eax
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jnz ntfsDevice
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; write MFT bitmap
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; write MFT bitmap
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mov eax, [ebp+NTFS.newMftRecord]
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mov eax, [ebp+NTFS.newMftRecord]
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shr eax, 3+9
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shr eax, 3+9
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@ -2438,33 +2588,10 @@ ntfs_CreateFile:
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mov ecx, 1
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mov ecx, 1
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xor edx, edx
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xor edx, edx
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call fs_write64_sys
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call fs_write64_sys
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test eax, eax
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jnz ntfsDevice
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|
||||||
; 5. Write partition bitmap
|
|
||||||
cmp [ebp+NTFS.bFolder], 1
|
|
||||||
jz @f
|
|
||||||
mov eax, [ebp+NTFS.fileDataStart]
|
|
||||||
mov ecx, [ebp+NTFS.fileDataSize]
|
|
||||||
test ecx, ecx
|
|
||||||
jz @f
|
|
||||||
add ecx, eax
|
|
||||||
add ecx, 4095
|
|
||||||
shr ecx, 3+9
|
|
||||||
shr eax, 3+9
|
|
||||||
sub ecx, eax
|
|
||||||
mov ebx, eax
|
|
||||||
shl ebx, 9
|
|
||||||
add eax, [ebp+NTFS.BitmapLocation]
|
|
||||||
add ebx, [ebp+NTFS.BitmapBuffer]
|
|
||||||
xor edx, edx
|
|
||||||
call fs_write64_app
|
|
||||||
test eax, eax
|
|
||||||
jnz ntfsDevice
|
|
||||||
@@:
|
|
||||||
mov edi, [ebp+NTFS.indexOffset]
|
mov edi, [ebp+NTFS.indexOffset]
|
||||||
mov eax, [ebp+NTFS.newMftRecord]
|
mov eax, [ebp+NTFS.newMftRecord]
|
||||||
mov [edi+fileRecordReference], eax
|
mov [edi+fileRecordReference], eax
|
||||||
; 6. Write directory node
|
; 5. Write directory node
|
||||||
mov eax, [ebp+NTFS.nodeLastRead]
|
mov eax, [ebp+NTFS.nodeLastRead]
|
||||||
mov [ebp+NTFS.LastRead], eax
|
mov [ebp+NTFS.LastRead], eax
|
||||||
mov eax, [ebp+NTFS.cur_index_buf]
|
mov eax, [ebp+NTFS.cur_index_buf]
|
||||||
@ -2626,6 +2753,7 @@ resizeAttribute:
|
|||||||
@@:
|
@@:
|
||||||
call ntfsSpaceAlloc
|
call ntfsSpaceAlloc
|
||||||
jc .err1
|
jc .err1
|
||||||
|
mov eax, [ebp+NTFS.fileDataStart]
|
||||||
pop edi
|
pop edi
|
||||||
pop edx
|
pop edx
|
||||||
cmp edx, eax
|
cmp edx, eax
|
||||||
@ -2648,44 +2776,23 @@ resizeAttribute:
|
|||||||
@@:
|
@@:
|
||||||
mov esi, [ebp+NTFS.attr_offs]
|
mov esi, [ebp+NTFS.attr_offs]
|
||||||
call createMcbEntry
|
call createMcbEntry
|
||||||
pop ecx
|
pop [ebp+NTFS.fileDataSize]
|
||||||
pop eax
|
pop [ebp+NTFS.fileDataStart]
|
||||||
jc .err2
|
movi eax, ERROR_UNSUPPORTED_FS
|
||||||
mov [ebp+NTFS.fileDataSize], ecx
|
|
||||||
mov [ebp+NTFS.fileDataStart], eax
|
|
||||||
.writeBitmap:
|
|
||||||
add ecx, eax
|
|
||||||
add ecx, 4095
|
|
||||||
shr ecx, 3+9
|
|
||||||
shr eax, 3+9
|
|
||||||
sub ecx, eax
|
|
||||||
mov ebx, eax
|
|
||||||
shl ebx, 9
|
|
||||||
add eax, [ebp+NTFS.BitmapLocation]
|
|
||||||
add ebx, [ebp+NTFS.BitmapBuffer]
|
|
||||||
xor edx, edx
|
|
||||||
call fs_write64_app
|
|
||||||
test eax, eax
|
|
||||||
jnz @f
|
|
||||||
.done:
|
.done:
|
||||||
ret
|
ret
|
||||||
|
|
||||||
.err4:
|
|
||||||
pop eax
|
|
||||||
@@:
|
|
||||||
movi eax, ERROR_DEVICE
|
|
||||||
stc
|
|
||||||
ret
|
|
||||||
|
|
||||||
.err1:
|
.err1:
|
||||||
add esp, 24
|
add esp, 24
|
||||||
stc
|
stc
|
||||||
.err10:
|
.err2:
|
||||||
movi eax, ERROR_DISK_FULL
|
movi eax, ERROR_DISK_FULL
|
||||||
ret
|
ret
|
||||||
|
|
||||||
.err2:
|
.err3:
|
||||||
movi eax, ERROR_UNSUPPORTED_FS
|
movi eax, ERROR_FS_FAIL
|
||||||
|
add esp, 20
|
||||||
|
stc
|
||||||
ret
|
ret
|
||||||
|
|
||||||
.shrinkAttribute:
|
.shrinkAttribute:
|
||||||
@ -2732,12 +2839,6 @@ resizeAttribute:
|
|||||||
@@:
|
@@:
|
||||||
ret
|
ret
|
||||||
|
|
||||||
.err3:
|
|
||||||
movi eax, ERROR_FS_FAIL
|
|
||||||
add esp, 20
|
|
||||||
stc
|
|
||||||
ret
|
|
||||||
|
|
||||||
.resident:
|
.resident:
|
||||||
test edx, edx
|
test edx, edx
|
||||||
jnz .nonResident
|
jnz .nonResident
|
||||||
@ -2791,8 +2892,7 @@ resizeAttribute:
|
|||||||
push ecx
|
push ecx
|
||||||
call ntfsSpaceAlloc
|
call ntfsSpaceAlloc
|
||||||
pop ecx
|
pop ecx
|
||||||
jc .err10
|
jc .err2
|
||||||
mov [ebp+NTFS.fileDataStart], eax
|
|
||||||
mov esi, [ebp+NTFS.attr_offs]
|
mov esi, [ebp+NTFS.attr_offs]
|
||||||
xor eax, eax
|
xor eax, eax
|
||||||
xor edx, edx
|
xor edx, edx
|
||||||
@ -2820,11 +2920,7 @@ resizeAttribute:
|
|||||||
pop ecx
|
pop ecx
|
||||||
shr ecx, 9
|
shr ecx, 9
|
||||||
call fs_write64_app
|
call fs_write64_app
|
||||||
push ebx
|
stdcall kernel_free, ebx
|
||||||
mov ebx, eax
|
|
||||||
call kernel_free
|
|
||||||
test ebx, ebx
|
|
||||||
jnz .err4
|
|
||||||
mov esi, [ebp+NTFS.attr_offs]
|
mov esi, [ebp+NTFS.attr_offs]
|
||||||
add esi, [esi+sizeWithHeader]
|
add esi, [esi+sizeWithHeader]
|
||||||
mov ecx, [ebp+NTFS.frs_buffer]
|
mov ecx, [ebp+NTFS.frs_buffer]
|
||||||
@ -2875,11 +2971,9 @@ resizeAttribute:
|
|||||||
sub edi, esi
|
sub edi, esi
|
||||||
mov [esi+recordRealSize], edi
|
mov [esi+recordRealSize], edi
|
||||||
pop edx
|
pop edx
|
||||||
mov ecx, [ebp+NTFS.fileDataSize]
|
|
||||||
sub [ebp+NTFS.fileDataSize], edx
|
sub [ebp+NTFS.fileDataSize], edx
|
||||||
mov eax, [ebp+NTFS.fileDataStart]
|
|
||||||
add [ebp+NTFS.fileDataStart], edx
|
add [ebp+NTFS.fileDataStart], edx
|
||||||
jmp .writeBitmap
|
ret
|
||||||
|
|
||||||
.makeResident: ; convert non-resident to empty resident
|
.makeResident: ; convert non-resident to empty resident
|
||||||
movzx eax, byte [esi+dataRunsOffset]
|
movzx eax, byte [esi+dataRunsOffset]
|
||||||
@ -2936,13 +3030,14 @@ ntfsSpaceClean:
|
|||||||
ret
|
ret
|
||||||
|
|
||||||
ntfsSpaceAlloc:
|
ntfsSpaceAlloc:
|
||||||
; find and mark block of free space in bitmap buffer
|
; allocate disk space
|
||||||
; in:
|
; in:
|
||||||
; edi = offset in bitmap to start search from
|
; edi = offset in bitmap to start search from
|
||||||
; [ebp+NTFS.fileDataSize] = block size in clusters
|
; [ebp+NTFS.fileDataSize] = block size in clusters
|
||||||
; out:
|
; out:
|
||||||
; eax = allocated block starting cluster
|
; [ebp+NTFS.fileDataStart] = allocated block starting cluster
|
||||||
; CF=1 -> disk full
|
; CF=1 -> disk full
|
||||||
|
push eax
|
||||||
mov ecx, [ebp+NTFS.BitmapBuffer]
|
mov ecx, [ebp+NTFS.BitmapBuffer]
|
||||||
add edi, ecx
|
add edi, ecx
|
||||||
add ecx, [ebp+NTFS.BitmapSize]
|
add ecx, [ebp+NTFS.BitmapSize]
|
||||||
@ -2955,7 +3050,7 @@ ntfsSpaceAlloc:
|
|||||||
mov eax, [ebp+NTFS.fileDataSize]
|
mov eax, [ebp+NTFS.fileDataSize]
|
||||||
shr eax, 5
|
shr eax, 5
|
||||||
jz .small
|
jz .small
|
||||||
push eax ; bitmap dwords
|
mov ebx, eax ; bitmap dwords
|
||||||
.start:
|
.start:
|
||||||
mov ecx, [ebp+NTFS.BitmapBuffer]
|
mov ecx, [ebp+NTFS.BitmapBuffer]
|
||||||
add ecx, [ebp+NTFS.BitmapSize]
|
add ecx, [ebp+NTFS.BitmapSize]
|
||||||
@ -2968,13 +3063,13 @@ ntfsSpaceAlloc:
|
|||||||
call bitmapBuffering
|
call bitmapBuffering
|
||||||
jmp @b
|
jmp @b
|
||||||
@@:
|
@@:
|
||||||
cmp ecx, [esp]
|
cmp ecx, ebx
|
||||||
jnc @f
|
jnc @f
|
||||||
call bitmapBuffering
|
call bitmapBuffering
|
||||||
jmp @b
|
jmp @b
|
||||||
@@:
|
@@:
|
||||||
sub edi, 4
|
sub edi, 4
|
||||||
mov ecx, [esp]
|
mov ecx, ebx
|
||||||
mov esi, edi
|
mov esi, edi
|
||||||
xor eax, eax
|
xor eax, eax
|
||||||
repz scasd ; check following dwords
|
repz scasd ; check following dwords
|
||||||
@ -3007,28 +3102,26 @@ ntfsSpaceAlloc:
|
|||||||
.small: ; less than 32 clusters
|
.small: ; less than 32 clusters
|
||||||
mov eax, -1
|
mov eax, -1
|
||||||
repz scasd ; search for zero bits
|
repz scasd ; search for zero bits
|
||||||
push ecx
|
|
||||||
test ecx, ecx
|
test ecx, ecx
|
||||||
jnz @f
|
jnz @f
|
||||||
call bitmapBuffering
|
call bitmapBuffering
|
||||||
pop eax
|
|
||||||
jmp .small
|
jmp .small
|
||||||
@@:
|
@@:
|
||||||
sub edi, 4
|
sub edi, 4
|
||||||
mov eax, [edi]
|
mov eax, [edi]
|
||||||
not eax
|
not eax
|
||||||
@@:
|
@@:
|
||||||
bsf ecx, eax ; first 0
|
bsf ebx, eax ; first 0
|
||||||
jz .again
|
jz .again
|
||||||
not eax
|
not eax
|
||||||
shr eax, cl
|
shr eax, cl
|
||||||
shl eax, cl
|
shl eax, cl
|
||||||
bsf edx, eax ; next 1
|
bsf edx, eax ; next 1
|
||||||
jz @f
|
jz @f
|
||||||
sub edx, ecx
|
sub edx, ebx
|
||||||
cmp edx, [ebp+NTFS.fileDataSize]
|
cmp edx, [ebp+NTFS.fileDataSize]
|
||||||
jnc .got ; fits inside
|
jnc .got ; fits inside
|
||||||
bsf ecx, eax
|
bsf ebx, eax
|
||||||
not eax
|
not eax
|
||||||
shr eax, cl
|
shr eax, cl
|
||||||
shl eax, cl
|
shl eax, cl
|
||||||
@ -3038,16 +3131,15 @@ ntfsSpaceAlloc:
|
|||||||
bsf edx, eax
|
bsf edx, eax
|
||||||
jz .got ; empty
|
jz .got ; empty
|
||||||
add edx, 32
|
add edx, 32
|
||||||
sub edx, ecx
|
sub edx, ebx
|
||||||
cmp edx, [ebp+NTFS.fileDataSize]
|
cmp edx, [ebp+NTFS.fileDataSize]
|
||||||
jnc .got ; share between dwords
|
jnc .got ; share between dwords
|
||||||
.again:
|
.again:
|
||||||
add edi, 4
|
add edi, 4
|
||||||
pop ecx
|
|
||||||
jmp .small
|
jmp .small
|
||||||
|
|
||||||
.got:
|
.got:
|
||||||
push ecx ; starting bit
|
push ebx ; starting bit
|
||||||
push edi ; starting dword
|
push edi ; starting dword
|
||||||
.done: ; mark space
|
.done: ; mark space
|
||||||
mov ecx, [esp+4]
|
mov ecx, [esp+4]
|
||||||
@ -3088,12 +3180,24 @@ ntfsSpaceAlloc:
|
|||||||
or [edi], eax
|
or [edi], eax
|
||||||
.end:
|
.end:
|
||||||
pop eax
|
pop eax
|
||||||
|
pop ecx
|
||||||
sub eax, [ebp+NTFS.BitmapBuffer]
|
sub eax, [ebp+NTFS.BitmapBuffer]
|
||||||
shl eax, 3
|
shl eax, 3
|
||||||
pop edx
|
add eax, ecx
|
||||||
add eax, edx
|
pop ecx
|
||||||
pop edx
|
mov ecx, [ebp+NTFS.fileDataSize]
|
||||||
ret
|
mov [ebp+NTFS.fileDataStart], eax
|
||||||
|
add ecx, eax
|
||||||
|
add ecx, 4095
|
||||||
|
shr ecx, 3+9
|
||||||
|
shr eax, 3+9
|
||||||
|
sub ecx, eax
|
||||||
|
mov ebx, eax
|
||||||
|
shl ebx, 9
|
||||||
|
add eax, [ebp+NTFS.BitmapLocation]
|
||||||
|
add ebx, [ebp+NTFS.BitmapBuffer]
|
||||||
|
xor edx, edx
|
||||||
|
jmp fs_write64_app
|
||||||
|
|
||||||
ntfsSpaceFree:
|
ntfsSpaceFree:
|
||||||
; free disk space
|
; free disk space
|
||||||
@ -3208,9 +3312,7 @@ bitmapBuffering:
|
|||||||
mov ecx, 8
|
mov ecx, 8
|
||||||
call release_pages
|
call release_pages
|
||||||
.end:
|
.end:
|
||||||
pop ebx
|
add esp, 12 ; ret
|
||||||
pop eax ; ret
|
|
||||||
pop eax
|
|
||||||
stc
|
stc
|
||||||
ret
|
ret
|
||||||
|
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user