mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-03 13:51:58 +03:00
207 lines
3.7 KiB
PHP
207 lines
3.7 KiB
PHP
; System function 70 - files with long names (LFN)
|
|
; diamond, 2006
|
|
|
|
iglobal
|
|
; in this table names must be in lowercase
|
|
rootdirs:
|
|
db 2,'rd'
|
|
dd fs_OnRamdisk
|
|
db 7,'ramdisk'
|
|
dd fs_OnRamdisk
|
|
db 2,'fd'
|
|
dd fs_OnFloppy
|
|
db 10,'floppydisk'
|
|
dd fs_OnFloppy
|
|
db 3,'hd0'
|
|
dd fs_OnHd0
|
|
db 3,'hd1'
|
|
dd fs_OnHd1
|
|
db 3,'hd2'
|
|
dd fs_OnHd2
|
|
db 3,'hd3'
|
|
dd fs_OnHd3
|
|
db 0
|
|
endg
|
|
|
|
file_system_lfn:
|
|
; in: eax->fileinfo block
|
|
; operation codes:
|
|
; 0 : read file
|
|
; 1 : rewrite file - not implemented yet
|
|
; 2 : delete file - not implemented yet
|
|
; 3 : write/append to file - not implemented yet
|
|
; 4 : create directory - not implemented yet
|
|
; 5 : rename file/directory - not implemented yet
|
|
; 6 : get file attributes structure - not implemented yet
|
|
; 7 : start application - not implemented yet
|
|
; 8 : find file with mask - not implemented yet
|
|
|
|
; parse file name
|
|
xchg ebx, eax
|
|
lea esi, [ebx+20]
|
|
lodsb
|
|
cmp al, '/'
|
|
jz @f
|
|
.notfound:
|
|
mov dword [esp+36], 5 ; file not found
|
|
ret
|
|
@@:
|
|
cmp byte [esi], 0
|
|
jz .rootdir
|
|
mov edi, rootdirs-4
|
|
xor ecx, ecx
|
|
push esi
|
|
.scan1:
|
|
pop esi
|
|
add edi, ecx
|
|
scasd
|
|
mov cl, byte [edi]
|
|
jecxz .notfound
|
|
inc edi
|
|
push esi
|
|
@@:
|
|
lodsb
|
|
or al, 20h
|
|
scasb
|
|
loopz @b
|
|
jnz .scan1
|
|
pop eax
|
|
lodsb
|
|
cmp al, '/'
|
|
jz .found1
|
|
test al, al
|
|
jnz .scan1
|
|
; directory /xxx
|
|
.maindir:
|
|
; directory /
|
|
.rootdir:
|
|
mov dword [esp+36], 10 ; access denied
|
|
ret
|
|
|
|
.found1:
|
|
cmp byte [esi], 0
|
|
jz .maindir
|
|
mov ebp, dword [edi] ; handler for this device
|
|
; read partition number
|
|
xor ecx, ecx
|
|
xor eax, eax
|
|
@@:
|
|
lodsb
|
|
cmp al, '/'
|
|
jz .done1
|
|
test al, al
|
|
jz .done1
|
|
sub al, '0'
|
|
cmp al, 9
|
|
ja .notfound
|
|
imul ecx, 10
|
|
add ecx, eax
|
|
jmp @b
|
|
.done1:
|
|
test ecx, ecx
|
|
jz .notfound
|
|
test al, al
|
|
jnz @f
|
|
dec esi
|
|
@@:
|
|
; now ebp contains handler address, ecx - partition number, esi points to ASCIIZ string - rest of name
|
|
jmp ebp
|
|
|
|
; handlers for devices
|
|
; in: ecx = partition number
|
|
; esi -> relative (for device) name
|
|
; ebx -> fileinfo
|
|
; out: [esp+36]=image of eax, [esp+24]=image of ebx
|
|
|
|
fs_OnRamdisk:
|
|
cmp ecx, 1
|
|
jnz file_system_lfn.notfound
|
|
movzx eax, byte [ebx]
|
|
test eax, eax
|
|
jnz .not_impl
|
|
mov ecx, [ebx+12]
|
|
mov edx, [ebx+16]
|
|
add edx, std_application_base_address
|
|
add ebx, 4
|
|
call dword [fs_RamdiskServices + eax*4]
|
|
mov [esp+36], eax
|
|
mov [esp+24], ebx
|
|
ret
|
|
.not_impl:
|
|
mov dword [esp+36], 2 ; not implemented
|
|
ret
|
|
|
|
fs_RamdiskServices:
|
|
dd fs_RamdiskRead
|
|
|
|
fs_OnFloppy:
|
|
cmp ecx, 2
|
|
ja file_system_lfn.notfound
|
|
movzx eax, byte [ebx]
|
|
test eax, eax
|
|
jnz fs_OnRamdisk.not_impl
|
|
call reserve_flp
|
|
mov [flp_number], cl
|
|
mov ecx, [ebx+12]
|
|
mov edx, [ebx+16]
|
|
add edx, std_application_base_address
|
|
add ebx, 4
|
|
call dword [fs_FloppyServices + eax*4]
|
|
and [flp_status], 0
|
|
mov [esp+36], eax
|
|
mov [esp+24], ebx
|
|
ret
|
|
|
|
fs_FloppyServices:
|
|
dd fs_FloppyRead
|
|
|
|
fs_OnHd0:
|
|
call reserve_hd1
|
|
mov [hdbase], 0x1F0
|
|
mov [hdid], 0
|
|
push 1
|
|
jmp fs_OnHd
|
|
fs_OnHd1:
|
|
call reserve_hd1
|
|
mov [hdbase], 0x1F0
|
|
mov [hdid], 0x10
|
|
push 2
|
|
jmp fs_OnHd
|
|
fs_OnHd2:
|
|
call reserve_hd1
|
|
mov [hdbase], 0x170
|
|
mov [hdid], 0
|
|
push 3
|
|
jmp fs_OnHd
|
|
fs_OnHd3:
|
|
call reserve_hd1
|
|
mov [hdbase], 0x170
|
|
mov [hdid], 0x10
|
|
push 4
|
|
fs_OnHd:
|
|
pop eax
|
|
mov [hdpos], eax
|
|
cmp ecx, [0x40001+eax]
|
|
jbe @f
|
|
and [hd1_status], 0
|
|
mov dword [esp+36], 5 ; not found
|
|
ret
|
|
@@:
|
|
mov [fat32part], ecx
|
|
push ebx esi
|
|
call choice_necessity_partition_1
|
|
pop esi ebx
|
|
mov ecx, [ebx+12]
|
|
mov edx, [ebx+16]
|
|
add edx, std_application_base_address
|
|
movzx eax, byte [ebx]
|
|
add ebx, 4
|
|
call dword [fs_HdServices + eax*4]
|
|
and [hd1_status], 0
|
|
mov [esp+36], eax
|
|
mov [esp+24], ebx
|
|
ret
|
|
|
|
fs_HdServices:
|
|
dd fs_HdRead
|