mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-11-28 19:53:12 +03:00
760 lines
21 KiB
PHP
760 lines
21 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2011. 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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uglobal
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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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IDE_Channel_1 db 0
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IDE_Channel_2 db 0
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endg
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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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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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reserve_cd_channel:
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cmp [ChannelNumber], 1
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jne .IDE_Channel_2
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.IDE_Channel_1:
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pushad
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mov ecx, ide_channel1_mutex
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call mutex_lock
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mov [IDE_Channel_1], 1
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popad
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ret
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.IDE_Channel_2:
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pushad
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mov ecx, ide_channel2_mutex
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call mutex_lock
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mov [IDE_Channel_2], 1
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popad
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ret
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free_cd_channel:
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cmp [ChannelNumber], 1
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jne .IDE_Channel_2
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.IDE_Channel_1:
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mov [IDE_Channel_1], 0
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pushad
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mov ecx, ide_channel1_mutex
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call mutex_unlock
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popad
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ret
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.IDE_Channel_2:
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mov [IDE_Channel_2], 0
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pushad
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mov ecx, ide_channel2_mutex
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call mutex_unlock
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popad
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ret
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uglobal
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cd_status dd 0
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endg
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;----------------------------------------------------------------
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;
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; fs_CdRead - LFN variant for reading CD disk
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;
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; esi points to filename /dir1/dir2/.../dirn/file,0
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; ebx pointer to 64-bit number = first wanted byte, 0+
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; may be ebx=0 - start from first byte
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; ecx number of bytes to read, 0+
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; edx mem location to return data
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;
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; ret ebx = bytes read or 0xffffffff file not found
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; eax = 0 ok read or other = errormsg
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;
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;--------------------------------------------------------------
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fs_CdRead:
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push edi
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cmp byte [esi], 0
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jnz @f
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.noaccess:
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pop edi
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.noaccess_2:
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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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.noaccess_3:
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pop eax edx ecx edi
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jmp .noaccess_2
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@@:
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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_2
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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 .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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.reteof:
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mov eax, 6; end of file
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pop edi
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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
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push 0
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mov eax, [edi+10] ; реальный размер файловой секции
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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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mov byte [esp], 6
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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; читаем сектор файла
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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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.incomplete_sector:
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; we must read and memmove incomplete sector
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mov [CDDataBuf_pointer], CDDataBuf
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call ReadCDWRetr; читаем сектор файла
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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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.done:
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mov ebx, edx
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pop eax edx ecx edi
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sub ebx, edx
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ret
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.eof:
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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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jmp .reteof
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;----------------------------------------------------------------
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;
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; fs_CdReadFolder - LFN variant for reading CD disk folder
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;
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; esi points to filename /dir1/dir2/.../dirn/file,0
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; ebx pointer to structure 32-bit number = first wanted block, 0+
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; & flags (bitfields)
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; flags: bit 0: 0=ANSI names, 1=UNICODE names
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; ecx number of blocks to read, 0+
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; edx mem location to return data
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;
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; ret ebx = blocks read or 0xffffffff folder not found
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; eax = 0 ok read or other = errormsg
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;
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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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.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] ; размер директрории
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.doit:
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; init header
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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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; начинаем переброску БДВК в УСВК
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;.mainloop:
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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 ; читаем сектор директории
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cmp [DevErrorCode], 0
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jne .noaccess_1
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call .get_names_from_buffer
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sub eax, 2048
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; директория закончилась?
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ja .read_to_buffer
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mov edi, [cd_counter_block]
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mov [edx+8], edi
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mov edi, [ebx]
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sub [edx+4], edi
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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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.get_names_from_buffer:
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mov [cd_current_pointer_of_input_2], CDDataBuf
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push eax esi edi edx
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.get_names_from_buffer_1:
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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_1
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test ecx, ecx
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jz .get_names_from_buffer_1
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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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mov edi, [cd_mem_location]
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add edi, 40
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test dword [ebx+4], 1; 0=ANSI, 1=UNICODE
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jnz .unicode
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; jmp .unicode
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.ansi:
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cmp [cd_counter_block], 2
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jbe .ansi_parent_directory
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cld
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lodsw
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xchg ah, al
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call uni2ansi_char
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cld
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stosb
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; проверка конца файла
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mov ax, [esi]
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cmp ax, word 3B00h; сепаратор конца файла ';'
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je .cd_get_parameters_of_file_1
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; проверка для файлов не заканчивающихся сепаратором
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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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je .cd_get_parameters_of_file_1
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; проверка конца папки
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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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jb .ansi
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.cd_get_parameters_of_file_1:
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mov [edi], byte 0
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call cd_get_parameters_of_file
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add [cd_mem_location], 304
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jmp .get_names_from_buffer_1
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.ansi_parent_directory:
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cmp [cd_counter_block], 2
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je @f
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mov [edi], byte '.'
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inc edi
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jmp .cd_get_parameters_of_file_1
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@@:
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mov [edi], word '..'
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add edi, 2
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jmp .cd_get_parameters_of_file_1
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.unicode:
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cmp [cd_counter_block], 2
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jbe .unicode_parent_directory
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cld
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movsw
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; проверка конца файла
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mov ax, [esi]
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cmp ax, word 3B00h; сепаратор конца файла ';'
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je .cd_get_parameters_of_file_2
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; проверка для файлов не заканчивающихся сепаратором
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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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je .cd_get_parameters_of_file_2
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; проверка конца папки
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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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jb .unicode
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.cd_get_parameters_of_file_2:
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mov [edi], word 0
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call cd_get_parameters_of_file
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add [cd_mem_location], 560
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jmp .get_names_from_buffer_1
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.unicode_parent_directory:
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cmp [cd_counter_block], 2
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je @f
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mov [edi], word 2E00h; '.'
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add edi, 2
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jmp .cd_get_parameters_of_file_2
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@@:
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mov [edi], dword 2E002E00h; '..'
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add edi, 4
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jmp .cd_get_parameters_of_file_2
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.end_buffer:
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pop edx edi esi eax
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ret
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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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; получаем атрибуты файла
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xor eax, eax
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; файл не архивировался
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inc eax
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shl eax, 1
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; это каталог?
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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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; метка тома не как в FAT, в этом виде отсутсвует
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; файл не является системным
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shl eax, 3
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; файл является скрытым? (атрибут существование)
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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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; файл всегда только для чтения, так как это CD
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inc eax
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mov [edi], eax
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; получаем время для файла
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;час
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movzx eax, byte [ebp-12]
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shl eax, 8
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;минута
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mov al, [ebp-11]
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shl eax, 8
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;секунда
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mov al, [ebp-10]
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;время создания файла
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mov [edi+8], eax
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;время последнего доступа
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mov [edi+16], eax
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;время последней записи
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mov [edi+24], eax
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; получаем дату для файла
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;год
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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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;месяц
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mov al, [ebp-14]
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shl eax, 8
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;день
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mov al, [ebp-13]
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;дата создания файла
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mov [edi+12], eax
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;время последнего доступа
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mov [edi+20], eax
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;время последней записи
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mov [edi+28], eax
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; получаем тип данных имени
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xor eax, eax
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test dword [ebx+4], 1; 0=ANSI, 1=UNICODE
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jnz .unicode_1
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mov [edi+4], eax
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jmp @f
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.unicode_1:
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inc eax
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mov [edi+4], eax
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@@:
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; получаем размер файла в байтах
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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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;
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; fs_CdGetFileInfo - LFN variant for CD
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; get file/directory attributes structure
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;
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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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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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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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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+ebp -> name
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; out: CF=1 - file not found
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; else CF=0 and [cd_current_pointer_of_input] direntry
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push eax esi
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; 16 сектор начало набора дескрипторов томов
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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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; тестовое чтение
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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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; вычисление последней сессии
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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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.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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; проверка на вшивость
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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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; сектор является терминатором набор дескрипторов томов?
|
||
cmp [CDDataBuf], byte 0xff
|
||
je .access_denied
|
||
; сектор является дополнительным и улучшенным дескриптором тома?
|
||
cmp [CDDataBuf], byte 0x2
|
||
jne .start
|
||
; сектор является дополнительным дескриптором тома?
|
||
cmp [CDDataBuf+6], byte 0x1
|
||
jne .start
|
||
|
||
; параметры root директрории
|
||
mov eax, [CDDataBuf+0x9c+2]; начало root директрории
|
||
mov [CDSectorAddress], eax
|
||
mov eax, [CDDataBuf+0x9c+10]; размер root директрории
|
||
cmp byte [esi], 0
|
||
jnz @f
|
||
mov [cd_current_pointer_of_input], CDDataBuf+0x9c
|
||
jmp .done
|
||
@@:
|
||
; начинаем поиск
|
||
.mainloop:
|
||
dec dword [CDSectorAddress]
|
||
.read_to_buffer:
|
||
inc dword [CDSectorAddress]
|
||
mov [CDDataBuf_pointer], CDDataBuf
|
||
call ReadCDWRetr ; читаем сектор директории
|
||
cmp [DevErrorCode], 0
|
||
jne .access_denied
|
||
push ebp
|
||
call cd_find_name_in_buffer
|
||
pop ebp
|
||
jnc .found
|
||
sub eax, 2048
|
||
; директория закончилась?
|
||
cmp eax, 0
|
||
ja .read_to_buffer
|
||
; нет искомого элемента цепочки
|
||
.access_denied:
|
||
pop esi eax
|
||
mov [cd_appl_data], 1
|
||
stc
|
||
ret
|
||
; искомый элемент цепочки найден
|
||
.found:
|
||
; конец пути файла
|
||
cmp byte [esi-1], 0
|
||
jz .done
|
||
.nested:
|
||
mov eax, [cd_current_pointer_of_input]
|
||
push dword [eax+2]
|
||
pop dword [CDSectorAddress] ; начало директории
|
||
mov eax, [eax+2+8]; размер директории
|
||
jmp .mainloop
|
||
; указатель файла найден
|
||
.done:
|
||
test ebp, ebp
|
||
jz @f
|
||
mov esi, ebp
|
||
xor ebp, ebp
|
||
jmp .nested
|
||
@@:
|
||
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 ; входы закончились?
|
||
jz .next_sector
|
||
cmp ebp, CDDataBuf+2048 ; буфер закончился?
|
||
jae .next_sector
|
||
movzx eax, byte [ebp]
|
||
add [cd_current_pointer_of_input_2], eax; следующий вход каталога
|
||
add ebp, 33; указатель установлен на начало имени
|
||
pop eax
|
||
clc
|
||
ret
|
||
.next_sector:
|
||
pop eax
|
||
stc
|
||
ret
|
||
|
||
cd_compare_name:
|
||
; compares ASCIIZ-names, case-insensitive (cp866 encoding)
|
||
; in: esi->name, ebp->name
|
||
; out: if names match: ZF=1 and esi->next component of name
|
||
; else: ZF=0, esi is not changed
|
||
; destroys eax
|
||
push esi eax edi
|
||
mov edi, ebp
|
||
.loop:
|
||
cld
|
||
lodsb
|
||
push eax
|
||
call char_todown
|
||
call ansi2uni_char
|
||
xchg ah, al
|
||
scasw
|
||
pop eax
|
||
je .coincides
|
||
call char_toupper
|
||
call ansi2uni_char
|
||
xchg ah, al
|
||
sub edi, 2
|
||
scasw
|
||
jne .name_not_coincide
|
||
.coincides:
|
||
cmp [esi], byte '/'; разделитель пути, конец имени текущего элемента
|
||
je .done
|
||
cmp [esi], byte 0; разделитель пути, конец имени текущего элемента
|
||
je .done
|
||
jmp .loop
|
||
.name_not_coincide:
|
||
pop edi eax esi
|
||
stc
|
||
ret
|
||
.done:
|
||
; проверка конца файла
|
||
cmp [edi], word 3B00h; сепаратор конца файла ';'
|
||
je .done_1
|
||
; проверка для файлов не заканчивающихся сепаратором
|
||
movzx eax, byte [ebp-33]
|
||
add eax, ebp
|
||
sub eax, 34
|
||
cmp edi, eax
|
||
je .done_1
|
||
; проверка конца папки
|
||
movzx eax, byte [ebp-1]
|
||
add eax, ebp
|
||
cmp edi, eax
|
||
jne .name_not_coincide
|
||
.done_1:
|
||
pop edi eax
|
||
add esp, 4
|
||
inc esi
|
||
clc
|
||
ret
|
||
|
||
char_todown:
|
||
; convert character to uppercase, using cp866 encoding
|
||
; in: al=symbol
|
||
; out: al=converted symbol
|
||
cmp al, 'A'
|
||
jb .ret
|
||
cmp al, 'Z'
|
||
jbe .az
|
||
cmp al, 0x80 ; 'А'
|
||
jb .ret
|
||
cmp al, 0x90 ; 'Р'
|
||
jb .rus1
|
||
cmp al, 0x9F ; 'Я'
|
||
ja .ret
|
||
; 0x90-0x9F -> 0xE0-0xEF
|
||
add al, 0xE0-0x90
|
||
.ret:
|
||
ret
|
||
.rus1:
|
||
; 0x80-0x8F -> 0xA0-0xAF
|
||
.az:
|
||
add al, 0x20
|
||
ret
|
||
|
||
uni2ansi_char:
|
||
; convert UNICODE character in al to ANSI character in ax, using cp866 encoding
|
||
; in: ax=UNICODE character
|
||
; out: al=converted ANSI character
|
||
cmp ax, 0x80
|
||
jb .ascii
|
||
cmp ax, 0x401
|
||
jz .yo1
|
||
cmp ax, 0x451
|
||
jz .yo2
|
||
cmp ax, 0x410
|
||
jb .unk
|
||
cmp ax, 0x440
|
||
jb .rus1
|
||
cmp ax, 0x450
|
||
jb .rus2
|
||
.unk:
|
||
mov al, '_'
|
||
jmp .doit
|
||
.yo1:
|
||
mov al, 0xF0 ; 'Ё' in cp866
|
||
jmp .doit
|
||
.yo2:
|
||
mov al, 0xF1 ; 'ё' in cp866
|
||
jmp .doit
|
||
.rus1:
|
||
; 0x410-0x43F -> 0x80-0xAF
|
||
add al, 0x70
|
||
jmp .doit
|
||
.rus2:
|
||
; 0x440-0x44F -> 0xE0-0xEF
|
||
add al, 0xA0
|
||
.ascii:
|
||
.doit:
|
||
ret
|