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  → /kernel/trunk/fs/iso9660.inc @ 6844

  → /kernel/trunk/fs/iso9660.inc @ 6845

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Regard whitespace Rev 6844 → Rev 6845

/kernel/trunk/fs/iso9660.inc
160,112 → 160,88
;-----------------------------------------------------------------------------
fs_CdRead:
push edi
cmp byte [esi], 0
jnz @f
;--------------------------------------
.noaccess:
pop edi
;--------------------------------------
.noaccess_2:
or ebx, -1
mov eax, ERROR_ACCESS_DENIED
ret
;--------------------------------------
.noaccess_3:
pop eax edx ecx edi
jmp .noaccess_2
;--------------------------------------
@@:
call cd_find_lfn
jnc .found
pop edi
cmp [DevErrorCode], 0
jne .noaccess_2
or ebx, -1
mov eax, ERROR_FILE_NOT_FOUND
ret
;--------------------------------------
.found:
jc .notFound
mov edi, [cd_current_pointer_of_input]
test byte [edi+25], 10b; do not allow read directories
jnz .noaccess
test ebx, ebx
jz .l1
cmp dword [ebx+4], 0
jz @f
xor ebx, ebx
movi eax, ERROR_END_OF_FILE
ret
.notFound:
cmp [DevErrorCode], 0
jne .noaccess
xor ebx, ebx
;--------------------------------------
.reteof:
mov eax, 6; end of file
pop edi
movi eax, ERROR_FILE_NOT_FOUND
ret
;--------------------------------------
.noaccess_3:
pop eax edx ecx
.noaccess:
xor ebx, ebx
movi eax, ERROR_ACCESS_DENIED
ret
@@:
mov ebx, [ebx]
;--------------------------------------
.l1:
push ecx edx
push 0
push ecx edx 0
mov eax, [edi+10] ; real size of the file section
sub eax, ebx
jb .eof
cmp eax, ecx
jae @f
mov ecx, eax
mov byte [esp], 6
;--------------------------------------
pop eax
push ERROR_END_OF_FILE
@@:
mov eax, [edi+2]
mov [CDSectorAddress], eax
;--------------------------------------
; now eax=cluster, ebx=position, ecx=count, edx=buffer for data
.new_sector:
test ecx, ecx
jz .done
sub ebx, 2048
jae .next
add ebx, 2048
jnz .incomplete_sector
cmp ecx, 2048
jb .incomplete_sector
; we may read and memmove complete sector
mov [CDDataBuf_pointer], edx
call ReadCDWRetr ; read sector of file
call ReadCDWRetr
cmp [DevErrorCode], 0
jne .noaccess_3
add edx, 2048
sub ecx, 2048
;--------------------------------------
.next:
inc dword [CDSectorAddress]
jmp .new_sector
;--------------------------------------
.incomplete_sector:
; we must read and memmove incomplete sector
.eof:
pop eax
push ERROR_END_OF_FILE
.done:
mov ebx, edx
pop eax edx ecx
sub ebx, edx
ret
.incomplete_sector: ; we must read and memmove incomplete sector
mov [CDDataBuf_pointer], CDDataBuf
call ReadCDWRetr ; read sector of file
call ReadCDWRetr
cmp [DevErrorCode], 0
jne .noaccess_3
push ecx
add ecx, ebx
cmp ecx, 2048
jbe @f
mov ecx, 2048
;--------------------------------------
@@:
sub ecx, ebx
push edi esi ecx
279,18 → 255,6
pop ecx
xor ebx, ebx
jmp .next
;--------------------------------------
.done:
mov ebx, edx
pop eax edx ecx edi
sub ebx, edx
ret
;--------------------------------------
.eof:
mov ebx, edx
pop eax edx ecx
sub ebx, edx
jmp .reteof
;-----------------------------------------------------------------------------
fs_CdReadFolder: