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ext2: support for files bigger than 4 GB

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git-svn-id: svn://kolibrios.org@6849 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
pathoswithin 2017-01-30 01:03:59 +00:00
parent 1ab6d8bc4e
commit 861e7b4ea9
1 changed files with 85 additions and 68 deletions
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153
kernel/trunk/fs/ext.inc
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@ -1018,28 +1018,34 @@ doublyIndirectBlockAlloc:
extfsExtendFile: extfsExtendFile:
; in: ; in:
; [ebp+EXTFS.inodeBuffer] = inode ; [ebp+EXTFS.inodeBuffer] = inode
; eax = inode number ; ecx = inode number
; ecx = new size ; edx:eax = new size
push ebx ecx edx esi edi eax push ebx esi edi ecx
lea esi, [ebp+EXTFS.inodeBuffer] lea esi, [ebp+EXTFS.inodeBuffer]
mov eax, ecx mov ebx, [esi+INODE.fileSize]
mov edx, [esi+INODE.fileSize] mov ecx, [esi+INODE.fileSizeHigh]
cmp edx, eax cmp ebx, eax
sbb ecx, edx
jnc .ret jnc .ret
mov ecx, [esi+INODE.fileSizeHigh]
mov [esi+INODE.fileSize], eax mov [esi+INODE.fileSize], eax
mov ecx, [ebp+EXTFS.sectorsPerBlockLog] mov [esi+INODE.fileSizeHigh], edx
add ecx, 9 sub eax, 1
dec eax sbb edx, 0
shr eax, cl div [ebp+EXTFS.bytesPerBlock]
inc eax inc eax
sub edx, 1 xchg eax, ebx
mov edx, ecx
sub eax, 1
sbb edx, 0
jc @f jc @f
shr edx, cl div [ebp+EXTFS.bytesPerBlock]
@@: @@:
inc edx inc eax
sub eax, edx sub ebx, eax
jz .ret jz .ret
push eax push ebx
mov edx, eax
@@: @@:
mov ecx, [esp] mov ecx, [esp]
mov eax, [esp+4] mov eax, [esp+4]
@ -1184,7 +1190,7 @@ extfsExtendFile:
xor eax, eax xor eax, eax
pop edi pop edi
.ret: .ret:
pop edi edi esi edx ecx ebx pop edi edi esi ebx
ret ret
.errSave: .errSave:
@ -1308,19 +1314,21 @@ freeDoublyIndirectBlock:
ret ret
extfsTruncateFile: extfsTruncateFile:
; in: ecx = new size, [ebp+EXTFS.inodeBuffer] = inode ; in: edx:eax = new size, [ebp+EXTFS.inodeBuffer] = inode
push ebx ecx edx esi edi
lea esi, [ebp+EXTFS.inodeBuffer] lea esi, [ebp+EXTFS.inodeBuffer]
cmp ecx, [esi+INODE.fileSize] mov ecx, edx
cmp eax, [esi+INODE.fileSize]
sbb ecx, [esi+INODE.fileSizeHigh]
jnc .ret jnc .ret
mov [esi+INODE.fileSize], ecx mov [esi+INODE.fileSize], eax
mov edx, ecx mov [esi+INODE.fileSizeHigh], edx
jecxz .directBlocks sub eax, 1
dec edx sbb edx, 0
mov ecx, [ebp+EXTFS.sectorsPerBlockLog] jc @f
add ecx, 9 div [ebp+EXTFS.bytesPerBlock]
shr edx, cl @@:
inc edx inc eax
mov edx, eax
cmp edx, 12 cmp edx, 12
jc .directBlocks jc .directBlocks
sub edx, 12 sub edx, 12
@ -1399,7 +1407,6 @@ extfsTruncateFile:
.done: .done:
call kernel_free call kernel_free
.ret: .ret:
pop edi esi edx ecx ebx
ret ret
linkInode: linkInode:
@ -1485,9 +1492,10 @@ linkInode:
push ecx push ecx
jnz @f jnz @f
.alloc_block: .alloc_block:
mov ecx, [esi+INODE.fileSize] mov eax, [esi+INODE.fileSize]
add ecx, [ebp+EXTFS.bytesPerBlock] add eax, [ebp+EXTFS.bytesPerBlock]
mov eax, [esp+24] xor edx, edx
mov ecx, [esp+24]
call extfsExtendFile call extfsExtendFile
jc .error_get_inode_block jc .error_get_inode_block
mov eax, [esp+24] mov eax, [esp+24]
@ -1633,20 +1641,20 @@ findInode:
mov edx, esi mov edx, esi
rep movsb rep movsb
pop esi pop esi
pushd 0 ROOT_INODE pushd ebx 0 ROOT_INODE
mov edi, esi mov edi, esi
cmp [edx+INODE.fileSize], 0 cmp [edx+INODE.fileSize], 0
jz .not_found jz .not_found
cmp byte [esi], 0 cmp byte [esi], 0
jnz .next_path_part jnz .next_path_part
xor eax, eax xor eax, eax
pop esi ecx pop esi ecx ebx
ret ret
@@: @@:
pop esi esi pop esi esi
.error: .error:
pop esi ecx pop esi ecx ebx
xor edi, edi xor edi, edi
stc stc
ret ret
@ -1729,7 +1737,7 @@ findInode:
movi eax, ERROR_FILE_NOT_FOUND movi eax, ERROR_FILE_NOT_FOUND
stc stc
.ret: .ret:
pop esi ecx pop esi ecx ebx
ret ret
writeSuperblock: writeSuperblock:
@ -1762,9 +1770,7 @@ ext_ReadFolder:
call ext_lock call ext_lock
cmp byte [esi], 0 cmp byte [esi], 0
jz .root_folder jz .root_folder
push ebx
call findInode call findInode
pop ebx
jc .error_ret jc .error_ret
lea esi, [ebp+EXTFS.inodeBuffer] lea esi, [ebp+EXTFS.inodeBuffer]
test [esi+INODE.accessMode], FLAG_FILE test [esi+INODE.accessMode], FLAG_FILE
@ -1972,10 +1978,8 @@ ext_ReadFolder:
;---------------------------------------------------------------- ;----------------------------------------------------------------
ext_ReadFile: ext_ReadFile:
call ext_lock call ext_lock
pushd 0 ebx
call findInode call findInode
pop ebx pushd 0 eax
push eax
jc .ret jc .ret
lea esi, [ebp+EXTFS.inodeBuffer] lea esi, [ebp+EXTFS.inodeBuffer]
mov byte [esp], ERROR_ACCESS_DENIED mov byte [esp], ERROR_ACCESS_DENIED
@ -2079,12 +2083,9 @@ ext_ReadFile:
;---------------------------------------------------------------- ;----------------------------------------------------------------
ext_GetFileInfo: ext_GetFileInfo:
call ext_lock call ext_lock
mov edx, [ebx+16]
cmp byte [esi], 0 cmp byte [esi], 0
jz .is_root jz .is_root
push edx
call findInode call findInode
pop edx
lea esi, [ebp+EXTFS.inodeBuffer] lea esi, [ebp+EXTFS.inodeBuffer]
jnc @f jnc @f
push eax push eax
@ -2096,6 +2097,7 @@ ext_GetFileInfo:
mov edi, esi mov edi, esi
lea esi, [ebp+EXTFS.rootInodeBuffer] lea esi, [ebp+EXTFS.rootInodeBuffer]
@@: @@:
mov edx, [ebx+16]
mov bl, [edi] mov bl, [edi]
xor eax, eax xor eax, eax
mov edi, edx mov edi, edx
@ -2133,12 +2135,11 @@ ext_GetFileInfo:
;---------------------------------------------------------------- ;----------------------------------------------------------------
ext_SetFileInfo: ext_SetFileInfo:
call extfsWritingInit call extfsWritingInit
pushd [ebx+16]
call findInode call findInode
pop edx
jc @f jc @f
push esi ; inode number push esi
lea esi, [edx+16] mov esi, [ebx+16]
add esi, 16
lea edi, [ebp+EXTFS.inodeBuffer] lea edi, [ebp+EXTFS.inodeBuffer]
call fsCalculateTime call fsCalculateTime
add eax, 978307200 ; 01.01.1970-01.01.2001 = (365*31+8)*24*60*60 add eax, 978307200 ; 01.01.1970-01.01.2001 = (365*31+8)*24*60*60
@ -2236,12 +2237,14 @@ ext_Delete:
lea ebx, [ebp+EXTFS.inodeBuffer] lea ebx, [ebp+EXTFS.inodeBuffer]
call readInode call readInode
jc .error_stack4_eax jc .error_stack4_eax
xor ecx, ecx push edx
xor eax, eax
xor edx, edx
call extfsTruncateFile ; free file's data call extfsTruncateFile ; free file's data
movzx ecx, [ebp+EXTFS.superblock.inodeSize] movzx ecx, [ebp+EXTFS.superblock.inodeSize]
lea edi, [ebp+EXTFS.inodeBuffer] lea edi, [ebp+EXTFS.inodeBuffer]
xor eax, eax xor eax, eax
push edx edi push edi
rep stosb rep stosb
call fsGetTime call fsGetTime
pop ebx ecx pop ebx ecx
@ -2408,7 +2411,8 @@ ext_CreateFile:
call linkInode call linkInode
jc .error2 jc .error2
pop esi ebx pop esi ebx
mov ecx, [ebx+12] mov eax, [ebx+12]
xor edx, edx
jmp ext_WriteFile.start jmp ext_WriteFile.start
.exist: .exist:
@ -2416,8 +2420,11 @@ ext_CreateFile:
test [ebp+EXTFS.inodeBuffer.accessMode], FLAG_FILE test [ebp+EXTFS.inodeBuffer.accessMode], FLAG_FILE
jz .error ; not a file jz .error ; not a file
pop ebx pop ebx
mov ecx, [ebx+12] mov eax, [ebx+12]
xor edx, edx
push eax edx ebx esi
call extfsTruncateFile call extfsTruncateFile
pop esi ebx edx eax
jmp ext_WriteFile.start jmp ext_WriteFile.start
.error2: .error2:
@ -2431,26 +2438,27 @@ ext_CreateFile:
;---------------------------------------------------------------- ;----------------------------------------------------------------
ext_WriteFile: ext_WriteFile:
call extfsWritingInit call extfsWritingInit
push ebx
call findInode call findInode
pop ebx
pushd 0 eax pushd 0 eax
jc .ret jc .ret
mov byte [esp], ERROR_ACCESS_DENIED mov byte [esp], ERROR_ACCESS_DENIED
test [ebp+EXTFS.inodeBuffer.accessMode], FLAG_FILE test [ebp+EXTFS.inodeBuffer.accessMode], FLAG_FILE
jz .ret ; not a file jz .ret ; not a file
mov ecx, [ebx+4] mov byte [esp], 0
add ecx, [ebx+12] mov eax, [ebx+4]
mov edx, [ebx+8]
add eax, [ebx+12]
adc edx, 0
.start: .start:
push esi push esi
mov eax, esi mov ecx, esi
call extfsExtendFile call extfsExtendFile
jc .errorExtend jc .errorExtend
mov eax, [ebx+4] mov eax, [ebx+4]
mov edx, [ebx+8]
mov ecx, [ebx+12] mov ecx, [ebx+12]
mov esi, [ebx+16] mov esi, [ebx+16]
.write: .write:
xor edx, edx
div [ebp+EXTFS.bytesPerBlock] div [ebp+EXTFS.bytesPerBlock]
test edx, edx test edx, edx
jz .aligned jz .aligned
@ -2547,44 +2555,52 @@ ext_WriteFile:
ret ret
.erase: .erase:
push eax eax edx push eax eax edi
mov eax, ebx mov eax, ebx
jmp .write jmp .write
;---------------------------------------------------------------- ;----------------------------------------------------------------
ext_SetFileEnd: ext_SetFileEnd:
call extfsWritingInit call extfsWritingInit
pushd [ebx+4]
call findInode call findInode
pop ecx
jc .error2 jc .error2
lea edi, [ebp+EXTFS.inodeBuffer] lea edi, [ebp+EXTFS.inodeBuffer]
movi eax, ERROR_ACCESS_DENIED movi eax, ERROR_ACCESS_DENIED
test [edi+INODE.accessMode], FLAG_FILE test [edi+INODE.accessMode], FLAG_FILE
jz .error2 ; not a file jz .error2 ; not a file
push esi mov eax, [ebx+4]
mov edx, [ebx+8]
mov ebx, [edi+INODE.fileSize] mov ebx, [edi+INODE.fileSize]
mov eax, esi mov ecx, [edi+INODE.fileSizeHigh]
cmp ebx, ecx push esi ecx
cmp ebx, eax
sbb ecx, edx
mov ecx, esi
jnc @f jnc @f
call extfsExtendFile call extfsExtendFile
pop esi
jc .error jc .error
sub ecx, ebx mov eax, [edi+INODE.fileSize]
cmp ecx, 1000001h mov edx, [edi+INODE.fileSizeHigh]
sub eax, ebx
sbb edx, esi
jnz .done
cmp eax, 1000001h
jnc .done jnc .done
push ecx push eax
stdcall kernel_alloc, ecx stdcall kernel_alloc, eax
pop ecx pop ecx
test eax, eax test eax, eax
jz .error jz .error
push ecx push ecx
add ecx, 3 add ecx, 3
shr ecx, 2 shr ecx, 2
mov edx, esi
mov esi, eax mov esi, eax
mov edi, eax mov edi, eax
xor eax, eax xor eax, eax
rep stosd rep stosd
pop ecx edx pop ecx edi
push esi push esi
call ext_WriteFile.erase call ext_WriteFile.erase
call kernel_free call kernel_free
@ -2593,6 +2609,7 @@ ext_SetFileEnd:
@@: @@:
call extfsTruncateFile call extfsTruncateFile
pop eax
.done: .done:
xor eax, eax xor eax, eax
.error: .error: