forked from KolibriOS/kolibrios
1ace68286b
* Deleted obsolete 58.4 (create folder 8.3 on hd) * Updated docs * Bugfixes (file system; core; direct screen access), improvements (sysfn 70.3) * KFar 0.21, full error handling, folder creation (with new kernel) git-svn-id: svn://kolibrios.org@321 a494cfbc-eb01-0410-851d-a64ba20cac60
679 lines
17 KiB
PHP
679 lines
17 KiB
PHP
; System function 70 - files with long names (LFN)
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; diamond, 2006
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iglobal
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; in this table names must be in lowercase
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rootdirs:
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db 2,'rd'
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dd fs_OnRamdisk
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dd fs_NextRamdisk
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db 7,'ramdisk'
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dd fs_OnRamdisk
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dd fs_NextRamdisk
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db 2,'fd'
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dd fs_OnFloppy
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dd fs_NextFloppy
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db 10,'floppydisk'
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dd fs_OnFloppy
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dd fs_NextFloppy
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db 3,'hd0'
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dd fs_OnHd0
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dd fs_NextHd0
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db 3,'hd1'
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dd fs_OnHd1
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dd fs_NextHd1
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db 3,'hd2'
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dd fs_OnHd2
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dd fs_NextHd2
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db 3,'hd3'
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dd fs_OnHd3
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dd fs_NextHd3
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;**********************************************
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db 3,'cd0'
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dd fs_OnCd0
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dd fs_NextCd
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db 3,'cd1'
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dd fs_OnCd1
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dd fs_NextCd
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db 3,'cd2'
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dd fs_OnCd2
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dd fs_NextCd
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db 3,'cd3'
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dd fs_OnCd3
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dd fs_NextCd
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;***********************************************
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db 0
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virtual_root_query:
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dd fs_HasRamdisk
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db 'rd',0
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dd fs_HasFloppy
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db 'fd',0
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dd fs_HasHd0
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db 'hd0',0
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dd fs_HasHd1
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db 'hd1',0
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dd fs_HasHd2
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db 'hd2',0
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dd fs_HasHd3
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db 'hd3',0
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;**********************************************
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dd fs_HasCd0
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db 'cd0',0
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dd fs_HasCd1
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db 'cd1',0
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dd fs_HasCd2
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db 'cd2',0
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dd fs_HasCd3
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db 'cd3',0
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;**********************************************
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dd 0
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endg
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file_system_lfn:
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; in: eax->fileinfo block
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; operation codes:
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; 0 : read file
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; 1 : read folder
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; 2 : create/rewrite file
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; 3 : write/append to file
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; 4 : set end of file
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; 5 : get file/directory attributes structure
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; 6 : set file/directory attributes structure
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; 7 : start application
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; 8 : delete file
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; 9 : create directory
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add eax, std_application_base_address
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; parse file name
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xchg ebx, eax
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lea esi, [ebx+20]
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mov ebp, esi ; for 'start app' function full path must be known
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lodsb
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test al, al
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jnz @f
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mov esi, [esi]
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add esi, std_application_base_address
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mov ebp, esi
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lodsb
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@@:
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cmp dword [ebx], 7
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jne @F
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mov edx, [ebx+4]
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mov ebx, [ebx+8]
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test ebx, ebx
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jz .l1
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add ebx, new_app_base
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.l1:
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call fs_execute ; ebp, ebx, edx
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mov [esp+36], eax
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ret
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@@:
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cmp al, '/'
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jz @f
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.notfound:
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mov dword [esp+36], 5 ; file not found
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ret
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@@:
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cmp byte [esi], 0
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jz .rootdir
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mov edi, rootdirs-8
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xor ecx, ecx
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push esi
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.scan1:
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pop esi
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add edi, ecx
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scasd
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scasd
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mov cl, byte [edi]
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jecxz .notfound
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inc edi
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push esi
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@@:
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lodsb
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or al, 20h
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scasb
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loopz @b
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jnz .scan1
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lodsb
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cmp al, '/'
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jz .found1
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test al, al
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jnz .scan1
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pop eax
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; directory /xxx
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.maindir:
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cmp dword [ebx], 1
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jnz .access_denied
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xor eax, eax
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mov ebp, [ebx+12]
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mov edx, [ebx+16]
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add edx, std_application_base_address
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push dword [ebx+4] ; first block
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mov ebx, [ebx+8] ; flags
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mov esi, [edi+4]
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; ebx=flags, [esp]=first block, ebp=number of blocks, edx=return area, esi='Next' handler
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mov edi, edx
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mov ecx, 32/4
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rep stosd
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mov byte [edx], 1 ; version
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.maindir_loop:
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call esi
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jc .maindir_done
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inc dword [edx+8]
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dec dword [esp]
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jns .maindir_loop
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dec ebp
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js .maindir_loop
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inc dword [edx+4]
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mov dword [edi], 0x10 ; attributes: folder
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mov dword [edi+4], 1 ; name type: UNICODE
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push eax
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xor eax, eax
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add edi, 8
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mov ecx, 40/4-2
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rep stosd
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pop eax
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push eax edx
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; convert number in eax to decimal UNICODE string
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push edi
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push -'0'
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mov cl, 10
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@@:
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xor edx, edx
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div ecx
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push edx
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test eax, eax
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jnz @b
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@@:
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pop eax
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add al, '0'
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stosb
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test bl, 1 ; UNICODE name?
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jz .ansi2
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mov byte [edi], 0
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inc edi
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.ansi2:
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test al, al
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jnz @b
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mov byte [edi-1], 0
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pop edi
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; UNICODE name length is 520 bytes, ANSI - 264
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add edi, 520
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test bl, 1
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jnz @f
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sub edi, 520-264
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@@:
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pop edx eax
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jmp .maindir_loop
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.maindir_done:
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pop eax
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mov ebx, [edx+4]
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xor eax, eax
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dec ebp
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js @f
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mov al, ERROR_END_OF_FILE
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@@:
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mov [esp+36], eax
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mov [esp+24], ebx
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ret
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; directory /
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.rootdir:
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cmp dword [ebx], 1 ; read folder?
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jz .readroot
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.access_denied:
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mov dword [esp+36], 10 ; access denied
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ret
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.readroot:
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; virtual root folder - special handler
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mov esi, virtual_root_query
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mov ebp, [ebx+12]
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mov edx, [ebx+16]
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add edx, std_application_base_address
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push dword [ebx+4] ; first block
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mov ebx, [ebx+8] ; flags
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xor eax, eax
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; eax=0, [esp]=first block, ebx=flags, ebp=number of blocks, edx=return area
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mov edi, edx
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mov ecx, 32/4
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rep stosd
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mov byte [edx], 1 ; version
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.readroot_loop:
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cmp dword [esi], eax
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jz .readroot_done
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call dword [esi]
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add esi, 4
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test eax, eax
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jnz @f
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.readroot_next:
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or ecx, -1
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xchg esi, edi
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repnz scasb
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xchg esi, edi
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jmp .readroot_loop
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@@:
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xor eax, eax
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inc dword [edx+8]
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dec dword [esp]
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jns .readroot_next
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dec ebp
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js .readroot_next
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inc dword [edx+4]
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mov dword [edi], 0x10 ; attributes: folder
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mov dword [edi+4], 1 ; name type: UNICODE
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add edi, 8
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mov ecx, 40/4-2
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rep stosd
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push edi
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@@:
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lodsb
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stosb
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test bl, 1
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jz .ansi
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mov byte [edi], 0
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inc edi
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.ansi:
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test eax, eax
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jnz @b
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pop edi
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add edi, 520
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test bl, 1
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jnz .readroot_loop
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sub edi, 520-264
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jmp .readroot_loop
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.readroot_done:
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pop eax
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mov ebx, [edx+4]
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xor eax, eax
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dec ebp
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js @f
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mov al, ERROR_END_OF_FILE
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@@:
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mov [esp+36], eax
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mov [esp+24], ebx
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ret
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.found1:
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pop eax
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cmp byte [esi], 0
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jz .maindir
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; read partition number
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xor ecx, ecx
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xor eax, eax
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@@:
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lodsb
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cmp al, '/'
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jz .done1
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test al, al
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jz .done1
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sub al, '0'
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cmp al, 9
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ja .notfound
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imul ecx, 10
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add ecx, eax
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jmp @b
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.done1:
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test ecx, ecx
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jz .notfound
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test al, al
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jnz @f
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dec esi
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@@:
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; now [edi] contains handler address, ecx - partition number,
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; esi points to ASCIIZ string - rest of name
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jmp dword [edi]
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; handlers for devices
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; in: ecx = 0 => query virtual directory /xxx
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; in: ecx = partition number
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; esi -> relative (for device) name
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; ebx -> fileinfo
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; out: [esp+36]=image of eax, [esp+24]=image of ebx
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fs_OnRamdisk:
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cmp ecx, 1
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jnz file_system_lfn.notfound
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mov eax, [ebx]
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cmp eax, fs_NumRamdiskServices
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jae .not_impl
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mov ecx, [ebx+12]
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mov edx, [ebx+16]
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add edx, std_application_base_address
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add ebx, 4
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call dword [fs_RamdiskServices + eax*4]
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mov [esp+36], eax
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mov [esp+24], ebx
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ret
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.not_impl:
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mov dword [esp+36], 2 ; not implemented
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ret
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fs_NotImplemented:
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mov eax, 2
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ret
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fs_RamdiskServices:
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dd fs_RamdiskRead
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dd fs_RamdiskReadFolder
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dd fs_RamdiskRewrite
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dd fs_RamdiskWrite
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dd fs_RamdiskSetFileEnd
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dd fs_RamdiskGetFileInfo
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dd fs_RamdiskSetFileInfo
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dd 0 ;fs_RamdiskExecute
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dd fs_RamdiskDelete
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dd fs_RamdiskCreateFolder
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fs_NumRamdiskServices = ($ - fs_RamdiskServices)/4
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fs_OnFloppy:
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cmp ecx, 2
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ja file_system_lfn.notfound
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mov eax, [ebx]
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cmp eax, fs_NumFloppyServices
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jae fs_OnRamdisk.not_impl
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call reserve_flp
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mov [flp_number], cl
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mov ecx, [ebx+12]
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mov edx, [ebx+16]
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add edx, std_application_base_address
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add ebx, 4
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call dword [fs_FloppyServices + eax*4]
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and [flp_status], 0
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mov [esp+36], eax
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mov [esp+24], ebx
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ret
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fs_FloppyServices:
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dd fs_FloppyRead
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dd fs_FloppyReadFolder
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dd fs_FloppyRewrite
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dd fs_FloppyWrite
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dd fs_FloppySetFileEnd
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dd fs_FloppyGetFileInfo
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dd fs_FloppySetFileInfo
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dd 0 ;fs_FloppyExecute
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dd fs_FloppyDelete
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dd fs_FloppyCreateFolder
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fs_NumFloppyServices = ($ - fs_FloppyServices)/4
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fs_OnHd0:
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call reserve_hd1
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mov [hdbase], 0x1F0
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mov [hdid], 0
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push 1
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jmp fs_OnHd
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fs_OnHd1:
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call reserve_hd1
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mov [hdbase], 0x1F0
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mov [hdid], 0x10
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push 2
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jmp fs_OnHd
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fs_OnHd2:
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call reserve_hd1
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mov [hdbase], 0x170
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mov [hdid], 0
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push 3
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jmp fs_OnHd
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fs_OnHd3:
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call reserve_hd1
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mov [hdbase], 0x170
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mov [hdid], 0x10
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push 4
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fs_OnHd:
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call reserve_hd_channel
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pop eax
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mov [hdpos], eax
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cmp ecx, 0x100
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jae .nf
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cmp cl, [0x40001+eax]
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jbe @f
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.nf:
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call free_hd_channel
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and [hd1_status], 0
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mov dword [esp+36], 5 ; not found
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ret
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@@:
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mov [fat32part], ecx
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push ebx esi
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call choice_necessity_partition_1
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pop esi ebx
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mov ecx, [ebx+12]
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mov edx, [ebx+16]
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add edx, std_application_base_address
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mov eax, [ebx]
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cmp eax, fs_NumHdServices
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jae .not_impl
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add ebx, 4
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call dword [fs_HdServices + eax*4]
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call free_hd_channel
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and [hd1_status], 0
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mov [esp+36], eax
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mov [esp+24], ebx
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ret
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.not_impl:
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call free_hd_channel
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and [hd1_status], 0
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mov dword [esp+36], 2 ; not implemented
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ret
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fs_HdServices:
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dd fs_HdRead
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dd fs_HdReadFolder
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dd fs_HdRewrite
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dd fs_HdWrite
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dd fs_HdSetFileEnd
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dd fs_HdGetFileInfo
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dd fs_HdSetFileInfo
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dd 0 ;fs_HdExecute
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dd fs_HdDelete
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dd fs_HdCreateFolder
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fs_NumHdServices = ($ - fs_HdServices)/4
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;*******************************************************
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fs_OnCd0:
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call reserve_cd
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mov [ChannelNumber],1
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mov [DiskNumber],0
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push 6
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jmp fs_OnCd
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fs_OnCd1:
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call reserve_cd
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mov [ChannelNumber],1
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mov [DiskNumber],1
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push 4
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jmp fs_OnCd
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fs_OnCd2:
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call reserve_cd
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mov [ChannelNumber],2
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mov [DiskNumber],0
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push 2
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jmp fs_OnCd
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fs_OnCd3:
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call reserve_cd
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mov [ChannelNumber],2
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mov [DiskNumber],1
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push 0
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fs_OnCd:
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call reserve_cd_channel
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pop eax
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mov [hdpos], eax
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cmp ecx, 0x100
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jae .nf
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push ecx ebx
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mov cl,al
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mov bl,[0x40001]
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shr bl,cl
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test bl,2
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pop ebx ecx
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jnz @f
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.nf:
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call free_cd_channel
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and [cd_status], 0
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mov dword [esp+36], 5 ; not found
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ret
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@@:
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mov ecx, [ebx+12]
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mov edx, [ebx+16]
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add edx, std_application_base_address
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mov eax, [ebx]
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cmp eax,fs_NumCdServices
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jae .not_impl
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add ebx, 4
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call dword [fs_CdServices + eax*4]
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call free_cd_channel
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and [cd_status], 0
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mov [esp+36], eax
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mov [esp+24], ebx
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ret
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.not_impl:
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call free_cd_channel
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and [cd_status], 0
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mov dword [esp+36], 2 ; not implemented
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ret
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fs_CdServices:
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dd fs_CdRead
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dd fs_CdReadFolder
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dd fs_NotImplemented
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dd fs_NotImplemented
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dd fs_NotImplemented
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dd fs_CdGetFileInfo
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dd fs_NotImplemented
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dd fs_CdExecute
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fs_NumCdServices = ($ - fs_CdServices)/4
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;*******************************************************
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fs_HasRamdisk:
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mov al, 1 ; we always have ramdisk
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ret
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fs_HasFloppy:
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cmp byte [0x40000], 0
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setnz al
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ret
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fs_HasHd0:
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mov al, [0x40001]
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and al, 11000000b
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cmp al, 01000000b
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setz al
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ret
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fs_HasHd1:
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mov al, [0x40001]
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and al, 00110000b
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cmp al, 00010000b
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setz al
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ret
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fs_HasHd2:
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mov al, [0x40001]
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and al, 00001100b
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cmp al, 00000100b
|
|
setz al
|
|
ret
|
|
fs_HasHd3:
|
|
mov al, [0x40001]
|
|
and al, 00000011b
|
|
cmp al, 00000001b
|
|
setz al
|
|
ret
|
|
|
|
;*******************************************************
|
|
fs_HasCd0:
|
|
mov al, [0x40001]
|
|
and al, 11000000b
|
|
cmp al, 10000000b
|
|
setz al
|
|
ret
|
|
fs_HasCd1:
|
|
mov al, [0x40001]
|
|
and al, 00110000b
|
|
cmp al, 00100000b
|
|
setz al
|
|
ret
|
|
fs_HasCd2:
|
|
mov al, [0x40001]
|
|
and al, 00001100b
|
|
cmp al, 00001000b
|
|
setz al
|
|
ret
|
|
fs_HasCd3:
|
|
mov al, [0x40001]
|
|
and al, 00000011b
|
|
cmp al, 00000010b
|
|
setz al
|
|
ret
|
|
;*******************************************************
|
|
|
|
; fs_NextXXX functions:
|
|
; in: eax = partition number, from which start to scan
|
|
; out: CF=1 => no more partitions
|
|
; CF=0 => eax=next partition number
|
|
|
|
fs_NextRamdisk:
|
|
; we always have /rd/1
|
|
test eax, eax
|
|
stc
|
|
jnz @f
|
|
mov al, 1
|
|
clc
|
|
@@:
|
|
ret
|
|
|
|
fs_NextFloppy:
|
|
; we have /fd/1 iff (([0x40000] and 0xF0) != 0) and /fd/2 iff (([0x40000] and 0x0F) != 0)
|
|
test byte [0x40000], 0xF0
|
|
jz .no1
|
|
test eax, eax
|
|
jnz .no1
|
|
inc eax
|
|
ret ; CF cleared
|
|
.no1:
|
|
test byte [0x40000], 0x0F
|
|
jz .no2
|
|
cmp al, 2
|
|
jae .no2
|
|
mov al, 2
|
|
clc
|
|
ret
|
|
.no2:
|
|
stc
|
|
ret
|
|
|
|
; on hdx, we have partitions from 1 to [0x40002+x]
|
|
fs_NextHd0:
|
|
push 0
|
|
jmp fs_NextHd
|
|
fs_NextHd1:
|
|
push 1
|
|
jmp fs_NextHd
|
|
fs_NextHd2:
|
|
push 2
|
|
jmp fs_NextHd
|
|
fs_NextHd3:
|
|
push 3
|
|
fs_NextHd:
|
|
pop ecx
|
|
movzx ecx, byte [0x40002+ecx]
|
|
cmp eax, ecx
|
|
jae fs_NextFloppy.no2
|
|
inc eax
|
|
clc
|
|
ret
|
|
|
|
;*******************************************************
|
|
fs_NextCd:
|
|
; we always have /cdX/1
|
|
test eax, eax
|
|
stc
|
|
jnz @f
|
|
mov al, 1
|
|
clc
|
|
@@:
|
|
ret
|
|
;*******************************************************
|
|
|