forked from KolibriOS/kolibrios
720 lines
19 KiB
PHP
720 lines
19 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2016. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License. ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision$
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; CD external functions
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; in:
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; esi -> path string in UTF-8
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; ebx -> offset in file (qword)
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; ecx = bytes to read
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; edx -> buffer
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; out:
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; eax, ebx = return values for sysfunc 70
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iglobal
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align 4
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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 0
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dd fs_NotImplemented
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dd fs_NotImplemented
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fs_NumCdServices = ($ - fs_CdServices)/4
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endg
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uglobal
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align 4
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cd_current_pointer_of_input dd 0
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cd_current_pointer_of_input_2 dd 0
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cd_mem_location dd 0
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cd_counter_block dd 0
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cd_status dd 0
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endg
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;-----------------------------------------------------------------------------
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fs_NotImplemented:
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movi eax, ERROR_UNSUPPORTED_FS
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ret
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;-----------------------------------------------------------------------------
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reserve_cd:
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cli
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cmp [cd_status], 0
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je reserve_ok2
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sti
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call change_task
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jmp reserve_cd
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;-----------------------------------------------------------------------------
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reserve_ok2:
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push eax
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mov eax, [CURRENT_TASK]
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shl eax, 5
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mov eax, [eax+CURRENT_TASK+TASKDATA.pid]
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mov [cd_status], eax
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pop eax
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sti
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ret
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;-----------------------------------------------------------------------------
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reserve_cd_channel:
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pushad
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mov eax, [cdpos]
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dec eax
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shr eax, 2
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test eax, eax
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jnz .1
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cmp [ChannelNumber], 1
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jne @f
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mov ecx, ide_channel1_mutex
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jmp .mutex_lock
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;--------------------------------------
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@@:
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mov ecx, ide_channel2_mutex
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jmp .mutex_lock
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;--------------------------------------
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.1:
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dec eax
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jnz .2
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cmp [ChannelNumber], 1
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jne @f
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mov ecx, ide_channel3_mutex
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jmp .mutex_lock
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;--------------------------------------
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@@:
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mov ecx, ide_channel4_mutex
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jmp .mutex_lock
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;--------------------------------------
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.2:
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cmp [ChannelNumber], 1
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jne @f
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mov ecx, ide_channel5_mutex
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jmp .mutex_lock
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;--------------------------------------
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@@:
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mov ecx, ide_channel6_mutex
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.mutex_lock:
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call mutex_lock
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popad
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ret
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;-----------------------------------------------------------------------------
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free_cd_channel:
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pushad
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mov eax, [cdpos]
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dec eax
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shr eax, 2
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test eax, eax
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jnz .1
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cmp [ChannelNumber], 1
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jne @f
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mov ecx, ide_channel1_mutex
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jmp .mutex_unlock
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;--------------------------------------
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@@:
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mov ecx, ide_channel2_mutex
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jmp .mutex_unlock
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;--------------------------------------
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.1:
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dec eax
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jnz .2
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cmp [ChannelNumber], 1
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jne @f
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mov ecx, ide_channel3_mutex
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jmp .mutex_unlock
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;--------------------------------------
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@@:
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mov ecx, ide_channel4_mutex
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jmp .mutex_unlock
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;--------------------------------------
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.2:
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cmp [ChannelNumber], 1
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jne @f
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mov ecx, ide_channel5_mutex
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jmp .mutex_unlock
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;--------------------------------------
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@@:
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mov ecx, ide_channel6_mutex
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.mutex_unlock:
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call mutex_unlock
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popad
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ret
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;-----------------------------------------------------------------------------
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fs_CdRead:
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call cd_find_lfn
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jc .notFound
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mov edi, [cd_current_pointer_of_input]
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test byte [edi+25], 10b ; do not allow read directories
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jnz .noaccess
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test ebx, ebx
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jz .l1
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cmp dword [ebx+4], 0
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jz @f
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xor ebx, ebx
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movi eax, ERROR_END_OF_FILE
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ret
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.notFound:
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cmp [DevErrorCode], 0
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jne .noaccess
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xor ebx, ebx
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movi eax, ERROR_FILE_NOT_FOUND
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ret
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.noaccess_3:
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pop eax edx ecx
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.noaccess:
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xor ebx, ebx
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movi eax, ERROR_ACCESS_DENIED
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ret
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@@:
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mov ebx, [ebx]
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.l1:
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push ecx edx 0
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mov eax, [edi+10] ; real size of the file section
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sub eax, ebx
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jb .eof
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cmp eax, ecx
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jae @f
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mov ecx, eax
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pop eax
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push ERROR_END_OF_FILE
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@@:
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mov eax, [edi+2]
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mov [CDSectorAddress], eax
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; now eax=cluster, ebx=position, ecx=count, edx=buffer for data
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.new_sector:
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test ecx, ecx
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jz .done
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sub ebx, 2048
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jae .next
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add ebx, 2048
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jnz .incomplete_sector
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cmp ecx, 2048
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jb .incomplete_sector
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; we may read and memmove complete sector
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mov [CDDataBuf_pointer], edx
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call ReadCDWRetr
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cmp [DevErrorCode], 0
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jne .noaccess_3
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add edx, 2048
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sub ecx, 2048
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.next:
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inc dword [CDSectorAddress]
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jmp .new_sector
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.eof:
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pop eax
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push ERROR_END_OF_FILE
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.done:
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mov ebx, edx
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pop eax edx ecx
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sub ebx, edx
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ret
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.incomplete_sector: ; we must read and memmove incomplete sector
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mov [CDDataBuf_pointer], CDDataBuf
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call ReadCDWRetr
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cmp [DevErrorCode], 0
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jne .noaccess_3
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push ecx
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add ecx, ebx
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cmp ecx, 2048
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jbe @f
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mov ecx, 2048
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@@:
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sub ecx, ebx
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push edi esi ecx
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mov edi, edx
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lea esi, [CDDataBuf + ebx]
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cld
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rep movsb
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pop ecx esi edi
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add edx, ecx
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sub [esp], ecx
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pop ecx
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xor ebx, ebx
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jmp .next
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;-----------------------------------------------------------------------------
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fs_CdReadFolder:
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push edi
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call cd_find_lfn
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jnc .found
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pop edi
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cmp [DevErrorCode], 0
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jne .noaccess_1
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or ebx, -1
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mov eax, ERROR_FILE_NOT_FOUND
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ret
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.found:
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mov edi, [cd_current_pointer_of_input]
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test byte [edi+25], 10b ; do not allow read directories
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jnz .found_dir
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pop edi
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.noaccess_1:
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or ebx, -1
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mov eax, ERROR_ACCESS_DENIED
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ret
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.end_buffer:
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pop edx eax
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sub eax, 2048 ; directory is over?
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ja .read_to_buffer
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mov eax, [cd_counter_block]
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mov [edx+8], eax
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mov eax, [ebx]
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sub [edx+4], eax
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xor eax, eax
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dec ecx
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js @f
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mov al, ERROR_END_OF_FILE
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@@:
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pop ecx edi
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mov ebx, [edx+4]
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ret
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.found_dir:
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mov eax, [edi+2] ; eax=cluster
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mov [CDSectorAddress], eax
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mov eax, [edi+10] ; directory size
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push eax ecx
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mov edi, edx
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mov ecx, 32/4
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xor eax, eax
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rep stosd
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pop ecx eax
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mov byte [edx], 1 ; version
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mov [cd_mem_location], edx
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add [cd_mem_location], 32
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mov [cd_counter_block], dword 0
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dec dword [CDSectorAddress]
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push ecx
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.read_to_buffer:
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inc dword [CDSectorAddress]
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mov [CDDataBuf_pointer], CDDataBuf
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call ReadCDWRetr ; read sector of directory
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cmp [DevErrorCode], 0
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jne .noaccess_1
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mov [cd_current_pointer_of_input_2], CDDataBuf
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push eax edx
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.get_names_from_buffer:
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call cd_get_name
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jc .end_buffer
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inc dword [cd_counter_block]
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mov eax, [cd_counter_block]
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cmp [ebx], eax
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jae .get_names_from_buffer
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test ecx, ecx
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jz .get_names_from_buffer
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mov edi, [cd_counter_block]
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mov [edx+4], edi
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dec ecx
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mov esi, ebp
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call cd_get_parameters_of_file
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add edi, 40
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mov ax, '.'
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cmp dword[ebx+4], 2
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jz .utf16
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cmp dword[ebx+4], 3
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jz .utf8
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cmp [cd_counter_block], 2
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jbe .parentDirectory
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@@:
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lodsw
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xchg ah, al
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call uni2ansi_char
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stosb
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call .checkForEnd
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jc @b
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@@:
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mov [edi], byte 0
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add [cd_mem_location], 304
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jmp .get_names_from_buffer
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.parentDirectory:
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stosb
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cmp [cd_counter_block], 2
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jnz @b
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stosb
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jmp @b
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.utf8:
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add [cd_mem_location], 256
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cmp [cd_counter_block], 2
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jbe .parentDirectory
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push ecx
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mov ecx, 519
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@@:
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lodsw
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xchg ah, al
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call UTF16to8
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js @f
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call .checkForEnd
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jc @b
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@@:
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pop ecx
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mov [edi], byte 0
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add [cd_mem_location], 304
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jmp .get_names_from_buffer
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.checkForEnd:
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mov ax, [esi]
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cmp ax, 3B00h ; ';'
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jz @f
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; check for files not ending with separator
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movzx eax, byte [ebp-33]
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add eax, ebp
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sub eax, 34
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cmp esi, eax
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jz @f
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; check the end of the directory
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movzx eax, byte [ebp-1]
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add eax, ebp
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cmp esi, eax
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@@:
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ret
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.utf16:
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cmp [cd_counter_block], 2
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jbe .utf16ParentDirectory
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@@:
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lodsw
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xchg ah, al
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stosw
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call .checkForEnd
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jc @b
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@@:
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mov [edi], word 0
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add [cd_mem_location], 560
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jmp .get_names_from_buffer
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.utf16ParentDirectory:
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stosw
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cmp [cd_counter_block], 2
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jnz @b
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stosw
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jmp @b
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cd_get_parameters_of_file:
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mov edi, [cd_mem_location]
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cd_get_parameters_of_file_1:
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; get file attributes
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xor eax, eax
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; file is not archived
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inc eax
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shl eax, 1
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; is a directory?
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test [ebp-8], byte 2
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jz .file
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inc eax
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.file:
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; not as a volume label in the FAT, in this form not available
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; file is not a system
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shl eax, 3
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; file is hidden? (attribute of existence)
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test [ebp-8], byte 1
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jz .hidden
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inc eax
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.hidden:
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shl eax, 1
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; file is always read-only, as this CD
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inc eax
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mov [edi], eax
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mov eax, [ebx+4]
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mov [edi+4], eax
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; get the time to file
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; hour
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movzx eax, byte [ebp-12]
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shl eax, 8
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; minute
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mov al, [ebp-11]
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shl eax, 8
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; second
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mov al, [ebp-10]
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; file creation time
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mov [edi+8], eax
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; last access time
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mov [edi+16], eax
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; last write time
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mov [edi+24], eax
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; get date for file
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; year
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movzx eax, byte [ebp-15]
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add eax, 1900
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shl eax, 8
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; month
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mov al, [ebp-14]
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shl eax, 8
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; day
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mov al, [ebp-13]
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; file creation date
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mov [edi+12], eax
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; last access date
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mov [edi+20], eax
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; last write date
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mov [edi+28], eax
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; get the file size in bytes
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xor eax, eax
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mov [edi+32+4], eax
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mov eax, [ebp-23]
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mov [edi+32], eax
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ret
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;-----------------------------------------------------------------------------
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fs_CdGetFileInfo:
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cmp byte [esi], 0
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jnz @f
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mov eax, 2
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ret
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;--------------------------------------
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@@:
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push edi
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call cd_find_lfn
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pushfd
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cmp [DevErrorCode], 0
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jz @f
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popfd
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pop edi
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mov eax, 11
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ret
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;--------------------------------------
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@@:
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popfd
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jnc @f
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pop edi
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mov eax, ERROR_FILE_NOT_FOUND
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ret
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;--------------------------------------
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@@:
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mov edi, edx
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push ebp
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mov ebp, [cd_current_pointer_of_input]
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add ebp, 33
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call cd_get_parameters_of_file_1
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pop ebp
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and dword [edi+4], 0
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pop edi
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xor eax, eax
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ret
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;-----------------------------------------------------------------------------
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cd_find_lfn:
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mov [cd_appl_data], 0
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; in: esi -> path string in UTF-8
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; out: [cd_current_pointer_of_input] -> direntry, CF=1 -> file not found
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push eax esi
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; Sector 16 - start set of volume descriptors
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call WaitUnitReady
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cmp [DevErrorCode], 0
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jne .access_denied
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call prevent_medium_removal
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; testing of reading
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mov [CDSectorAddress], dword 16
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mov [CDDataBuf_pointer], CDDataBuf
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call ReadCDWRetr;_1
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cmp [DevErrorCode], 0
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jne .access_denied
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; calculation of the last session
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call WaitUnitReady
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cmp [DevErrorCode], 0
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jne .access_denied
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call Read_TOC
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mov ah, [CDDataBuf+4+4]
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mov al, [CDDataBuf+4+5]
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shl eax, 16
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mov ah, [CDDataBuf+4+6]
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mov al, [CDDataBuf+4+7]
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add eax, 15
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mov [CDSectorAddress], eax
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; mov [CDSectorAddress],dword 15
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mov [CDDataBuf_pointer], CDDataBuf
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;--------------------------------------
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.start:
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inc dword [CDSectorAddress]
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call ReadCDWRetr;_1
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cmp [DevErrorCode], 0
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jne .access_denied
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.start_check:
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; checking for "lice"
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cmp [CDDataBuf+1], dword 'CD00'
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jne .access_denied
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cmp [CDDataBuf+5], byte '1'
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jne .access_denied
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; sector is the terminator of set of descriptors volumes?
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cmp [CDDataBuf], byte 0xff
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je .access_denied
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; sector is an additional and improved descriptor of volume?
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cmp [CDDataBuf], byte 0x2
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jne .start
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; sector is an additional descriptor of volume?
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cmp [CDDataBuf+6], byte 0x1
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jne .start
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; parameters of root directory
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mov eax, [CDDataBuf+0x9c+2]; start of root directory
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mov [CDSectorAddress], eax
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mov eax, [CDDataBuf+0x9c+10]; size of root directory
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cmp byte [esi], 0
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jnz @f
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mov [cd_current_pointer_of_input], CDDataBuf+0x9c
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jmp .done
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;--------------------------------------
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@@:
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; start the search
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.mainloop:
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dec dword [CDSectorAddress]
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;--------------------------------------
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.read_to_buffer:
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inc dword [CDSectorAddress]
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mov [CDDataBuf_pointer], CDDataBuf
|
|
call ReadCDWRetr ; read sector of directory
|
|
cmp [DevErrorCode], 0
|
|
jne .access_denied
|
|
call cd_find_name_in_buffer
|
|
jnc .found
|
|
sub eax, 2048
|
|
; directory is over?
|
|
cmp eax, 0
|
|
ja .read_to_buffer
|
|
; desired element of chain is not found
|
|
.access_denied:
|
|
pop esi eax
|
|
mov [cd_appl_data], 1
|
|
stc
|
|
ret
|
|
;--------------------------------------
|
|
; desired element of chain found
|
|
.found:
|
|
; the end of the file path
|
|
cmp byte [esi-1], 0
|
|
jz .done
|
|
mov eax, [cd_current_pointer_of_input]
|
|
push dword [eax+2]
|
|
pop dword [CDSectorAddress] ; beginning of the directory
|
|
mov eax, [eax+2+8] ; size of directory
|
|
jmp .mainloop
|
|
;--------------------------------------
|
|
; file pointer found
|
|
.done:
|
|
pop esi eax
|
|
mov [cd_appl_data], 1
|
|
clc
|
|
ret
|
|
;-----------------------------------------------------------------------------
|
|
cd_find_name_in_buffer:
|
|
mov [cd_current_pointer_of_input_2], CDDataBuf
|
|
;--------------------------------------
|
|
.start:
|
|
call cd_get_name
|
|
jc .not_found
|
|
|
|
call cd_compare_name
|
|
jc .start
|
|
;--------------------------------------
|
|
.found:
|
|
clc
|
|
ret
|
|
;--------------------------------------
|
|
.not_found:
|
|
stc
|
|
ret
|
|
;-----------------------------------------------------------------------------
|
|
cd_get_name:
|
|
push eax
|
|
mov ebp, [cd_current_pointer_of_input_2]
|
|
mov [cd_current_pointer_of_input], ebp
|
|
mov eax, [ebp]
|
|
test eax, eax ; entry's is over?
|
|
jz .next_sector
|
|
|
|
cmp ebp, CDDataBuf+2048 ; buffer is over?
|
|
jae .next_sector
|
|
|
|
movzx eax, byte [ebp]
|
|
add [cd_current_pointer_of_input_2], eax ; next entry of directory
|
|
add ebp, 33; pointer is set to the beginning of the name
|
|
pop eax
|
|
clc
|
|
ret
|
|
;--------------------------------------
|
|
.next_sector:
|
|
pop eax
|
|
stc
|
|
ret
|
|
;-----------------------------------------------------------------------------
|
|
cd_compare_name:
|
|
; in: esi -> UTF-8 name, ebp -> UTF-16BE name
|
|
; out: CF=0 -> names match, esi -> next component of name
|
|
; CF=1 -> esi is not changed
|
|
push edx edi eax esi
|
|
mov edi, ebp
|
|
.loop:
|
|
call utf8to16
|
|
call utf16toUpper
|
|
mov edx, eax
|
|
mov ax, [edi]
|
|
xchg al, ah
|
|
call utf16toUpper
|
|
cmp ax, dx
|
|
jne .name_not_coincide
|
|
add edi, 2
|
|
cmp [esi], byte '/' ; path separator is end of current element
|
|
je .done
|
|
cmp [esi], byte 0 ; path separator end of name
|
|
jne .loop
|
|
.done:
|
|
; check end of file
|
|
cmp [edi], word 3B00h; separator end of file ';'
|
|
je .done_1
|
|
; check for files not ending with separator
|
|
movzx eax, byte [ebp-33]
|
|
add eax, ebp
|
|
sub eax, 34
|
|
cmp edi, eax
|
|
je .done_1
|
|
; check the end of directory
|
|
movzx eax, byte [ebp-1]
|
|
add eax, ebp
|
|
cmp edi, eax
|
|
jne .name_not_coincide
|
|
.done_1:
|
|
pop eax eax edi edx
|
|
inc esi
|
|
ret
|
|
|
|
.name_not_coincide:
|
|
pop esi eax edi edx
|
|
stc
|
|
ret
|