WebSVN – Kolibri OS – Blame – /kernel/branches/Kolibri-A/trunk/fs/part_set.inc

Rev	Author	Line No.	Line
431	serge	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		2	;; ;;
		3	;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
		4	;; Distributed under terms of the GNU General Public License ;;
		5	;; ;;
		6	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		7
593	mikedld	8	$Revision: 1419 $
		9
		10
1410	turbanoff	11	;*************************************************************
		12	;* 13.02.2010 Find all partition and check supported FS
578	mario79	13	;* 12.07.2007 Check all 4 entry of MBR and EMBR
		14	;* 29.04.2006 Elimination of hangup after the
		15	;* expiration hd_wait_timeout - Mario79
		16	;* 28.01.2006 find all Fat16/32 partition in all input point
		17	;* to MBR - Mario79
65	mario79	18	;*************************************************************
		19
277	diamond	20	uglobal
65	mario79	21	align 4
256	diamond	22
65	mario79	23	;******************************************************
431	serge	24	; Please do not change this place - variables in text
65	mario79	25	; Mario79
		26	; START place
		27	;******************************************************
		28	PARTITION_START dd 0x3f
		29	PARTITION_END dd 0
1410	turbanoff	30	fs_type db 0 ; 1=NTFS, 2=EXT2/3, 16=FAT16, 32=FAT32
277	diamond	31	align 4
256	diamond	32
		33	fs_dependent_data_start:
		34	; FATxx data
		35
65	mario79	36	SECTORS_PER_FAT dd 0x1f3a
		37	NUMBER_OF_FATS dd 0x2
		38	SECTORS_PER_CLUSTER dd 0x8
		39	BYTES_PER_SECTOR dd 0x200 ; Note: if BPS <> 512 need lots of changes
		40	ROOT_CLUSTER dd 2 ; first rootdir cluster
		41	FAT_START dd 0 ; start of fat table
		42	ROOT_START dd 0 ; start of rootdir (only fat16)
		43	ROOT_SECTORS dd 0 ; count of rootdir sectors (only fat16)
		44	DATA_START dd 0 ; start of data area (=first cluster 2)
		45	LAST_CLUSTER dd 0 ; last availabe cluster
		46	ADR_FSINFO dd 0 ; used only by fat32
		47
		48	fatRESERVED dd 0x0FFFFFF6
		49	fatBAD dd 0x0FFFFFF7
		50	fatEND dd 0x0FFFFFF8
		51	fatMASK dd 0x0FFFFFFF
		52
649	diamond	53	fatStartScan dd 2
		54
256	diamond	55	fs_dependent_data_end:
321	diamond	56	file_system_data_size = $ - PARTITION_START
		57	if file_system_data_size > 96
		58	ERROR: sizeof(file system data) too big!
1379	turbanoff	59	end if
256	diamond	60
		61	virtual at fs_dependent_data_start
		62	; NTFS data
		63	ntfs_data:
		64	.sectors_per_cluster dd ?
		65	.mft_cluster dd ?
		66	.mftmirr_cluster dd ?
		67	.frs_size dd ? ; FRS size in bytes
		68	.iab_size dd ? ; IndexAllocationBuffer size in bytes
		69	.frs_buffer dd ?
		70	.iab_buffer dd ?
		71	.mft_retrieval dd ?
		72	.mft_retrieval_size dd ?
		73	.mft_retrieval_alloc dd ?
		74	.mft_retrieval_end dd ?
		75	.cur_index_size dd ?
		76	.cur_index_buf dd ?
		77	if $ > fs_dependent_data_end
		78	ERROR: increase sizeof(fs_dependent_data)!
		79	end if
1379	turbanoff	80	end virtual
		81
1378	turbanoff	82	virtual at fs_dependent_data_start
		83	; EXT2 data
		84	ext2_data:
1379	turbanoff	85	.log_block_size dd ?
		86	.block_size dd ?
		87	.count_block_in_block dd ?
		88	.blocks_per_group dd ?
		89	.inodes_per_group dd ?
		90	.global_desc_table dd ?
		91	.root_inode dd ? ; pointer to root inode in memory
		92	.inode_size dd ?
		93	.count_pointer_in_block dd ? ; block_size / 4
		94	.count_pointer_in_block_square dd ? ; (block_size / 4)**2
		95	.ext2_save_block dd ? ; �� 1 ��楤��
		96	.ext2_temp_block dd ? ; �� 楤��
		97	.ext2_save_inode dd ? ; inode �� 楤��
1419	turbanoff	98	.ext2_temp_inode dd ? ; inode �� 楤��
		99	.sb dd ? ; superblock
		100	.groups_count dd ?
1378	turbanoff	101	if $ > fs_dependent_data_end
		102	ERROR: increase sizeof(fs_dependent_data)!
		103	end if
256	diamond	104	end virtual
1379	turbanoff	105
65	mario79	106	;***************************************************************************
		107	; End place
		108	; Mario79
		109	;***************************************************************************
277	diamond	110	endg
		111	iglobal
65	mario79	112
		113	partition_types: ; list of fat16/32 partitions
		114	db 0x04 ; DOS: fat16 <32M
		115	db 0x06 ; DOS: fat16 >32M
		116	db 0x0b ; WIN95: fat32
		117	db 0x0c ; WIN95: fat32, LBA-mapped
		118	db 0x0e ; WIN95: fat16, LBA-mapped
		119	db 0x14 ; Hidden DOS: fat16 <32M
		120	db 0x16 ; Hidden DOS: fat16 >32M
		121	db 0x1b ; Hidden WIN95: fat32
		122	db 0x1c ; Hidden WIN95: fat32, LBA-mapped
		123	db 0x1e ; Hidden WIN95: fat16, LBA-mapped
		124	db 0xc4 ; DRDOS/secured: fat16 <32M
		125	db 0xc6 ; DRDOS/secured: fat16 >32M
		126	db 0xcb ; DRDOS/secured: fat32
		127	db 0xcc ; DRDOS/secured: fat32, LBA-mapped
		128	db 0xce ; DRDOS/secured: fat16, LBA-mapped
		129	db 0xd4 ; Old Multiuser DOS secured: fat16 <32M
		130	db 0xd6 ; Old Multiuser DOS secured: fat16 >32M
256	diamond	131	db 0x07 ; NTFS
1379	turbanoff	132	db 0x27 ; NTFS, hidden
1378	turbanoff	133	db 0x83 ; Linux native file system (ext2fs)
65	mario79	134	partition_types_end:
		135
		136
		137	extended_types: ; list of extended partitions
		138	db 0x05 ; DOS: extended partition
		139	db 0x0f ; WIN95: extended partition, LBA-mapped
		140	db 0xc5 ; DRDOS/secured: extended partition
		141	db 0xd5 ; Old Multiuser DOS secured: extended partition
		142	extended_types_end:
		143
		144	endg
		145
		146	; Partition chain used:
1379	turbanoff	147	; MBR <---------------------
		148	; \| \|
		149	; \|-> PARTITION1 \|
		150	; \|-> EXTENDED PARTITION - ;not need be second partition
		151	; \|-> PARTITION3
		152	; \|-> PARTITION4
		153
1378	turbanoff	154	set_PARTITION_variables:
		155	set_FAT32_variables: ;deprecated
1410	turbanoff	156	and [problem_partition], 0
65	mario79	157	call reserve_hd1
321	diamond	158	call reserve_hd_channel
65	mario79	159
709	diamond	160	pushad
		161
65	mario79	162	cmp dword [hdpos],0
		163	je problem_hd
		164
		165	xor ecx,ecx ; partition count
1410	turbanoff	166	;or edx,-1 ; flag for partition
1378	turbanoff	167	xor eax,eax ; address MBR
65	mario79	168	xor ebp,ebp ; extended partition start
		169
1378	turbanoff	170	new_mbr:
		171	test ebp,ebp ; is there extended partition? (MBR or EMBR)
65	mario79	172	jnz extended_already_set ; yes
		173	xchg ebp,eax ; no. set it now
		174
		175	extended_already_set:
		176	add eax,ebp ; mbr=mbr+0, ext_part=ext_start+relat_start
		177	mov ebx,buffer
		178	call hd_read
74	mario79	179	cmp [hd_error],0
		180	jne problem_hd
65	mario79	181
		182	cmp word [ebx+0x1fe],0xaa55 ; is it valid boot sector?
1410	turbanoff	183	jnz end_partition_chain
		184	push eax ; push only one time
65	mario79	185	cmp dword [ebx+0x1be+0xc],0 ; skip over empty partition
1378	turbanoff	186	jnz test_primary_partition_0
578	mario79	187	cmp dword [ebx+0x1be+0xc+16],0
1378	turbanoff	188	jnz test_primary_partition_1
578	mario79	189	cmp dword [ebx+0x1be+0xc+16+16],0
1378	turbanoff	190	jnz test_primary_partition_2
578	mario79	191	cmp dword [ebx+0x1be+0xc+16+16+16],0
1410	turbanoff	192	jnz test_primary_partition_3
		193	pop eax
1378	turbanoff	194	jmp end_partition_chain
		195
		196	test_primary_partition_0:
65	mario79	197	mov al,[ebx+0x1be+4] ; get primary partition type
		198	call scan_partition_types
1378	turbanoff	199	jnz test_primary_partition_1 ; no. skip over
65	mario79	200
		201	inc ecx
1378	turbanoff	202	cmp ecx,[known_part] ; is it wanted partition?
		203	jnz test_primary_partition_1 ; no
1410	turbanoff	204
		205	pop eax
		206	;mov edx, eax ; start sector
		207	add eax, [ebx+0x1be+8] ; add relative start
		208	;mov [PARTITON_START],edx
		209	;push edx
		210	mov edx, [ebx+0x1be+12] ; length
		211	;add edx, eax ; add length
		212	;dec edx ; PARTITION_END is inclusive
		213	;mov [PARTITION_END], edx ; note that this can be changed
256	diamond	214	; when file system data will be available
1410	turbanoff	215	mov cl, [ebx+0x1be+4] ; fs_type
		216	;mov [fs_type], dl ; save for FS recognizer (separate FAT vs NTFS)
		217	;pop edx
		218	jmp hd_and_partition_ok
256	diamond	219
1378	turbanoff	220	test_primary_partition_1:
65	mario79	221	mov al,[ebx+0x1be+4+16] ; get primary partition type
		222	call scan_partition_types
1378	turbanoff	223	jnz test_primary_partition_2 ; no. skip over
65	mario79	224
		225	inc ecx
1378	turbanoff	226	cmp ecx,[known_part] ; is it wanted partition?
		227	jnz test_primary_partition_2 ; no
1410	turbanoff	228
		229	pop eax
		230	add eax, [ebx+0x1be+8+16]
		231	mov edx, [ebx+0x1be+12+16]
		232	mov cl, [ebx+0x1be+4+16]
		233	jmp hd_and_partition_ok
65	mario79	234
1410	turbanoff	235	;mov edx, eax
		236	;add edx, [ebx+0x1be+8+16]
		237	;push edx
		238	;add edx, [ebx+0x1be+12+16]
		239	;dec edx
		240	;mov [PARTITION_END], edx
		241	;mov al, [ebx+0x1be+4+16]
		242	;mov [fs_type], dl
		243	;pop edx
65	mario79	244
1378	turbanoff	245	test_primary_partition_2:
65	mario79	246	mov al,[ebx+0x1be+4+16+16] ; get primary partition type
		247	call scan_partition_types
1378	turbanoff	248	jnz test_primary_partition_3 ; no. skip over
65	mario79	249
		250	inc ecx
1378	turbanoff	251	cmp ecx,[known_part] ; is it wanted partition?
		252	jnz test_primary_partition_3 ; no
1410	turbanoff	253
		254	pop eax
		255	add eax, [ebx+0x1be+8+16+16]
		256	mov edx, [ebx+0x1be+12+16+16]
		257	mov cl, [ebx+0x1be+4+16+16]
		258	jmp hd_and_partition_ok
		259	;mov edx, eax
		260	;add edx, [ebx+0x1be+8+16+16]
		261	;push edx
		262	;add edx, [ebx+0x1be+12+16+16]
		263	;dec edx
		264	;mov [PARTITION_END], edx
		265	;mov al, [ebx+0x1be+4+16+16]
		266	;mov [fs_type], dl
		267	;pop edx
65	mario79	268
1378	turbanoff	269	test_primary_partition_3:
65	mario79	270	mov al,[ebx+0x1be+4+16+16+16] ; get primary partition type
		271	call scan_partition_types
1378	turbanoff	272	jnz test_ext_partition_0 ; no. skip over
65	mario79	273
		274	inc ecx
1378	turbanoff	275	cmp ecx,[known_part] ; is it wanted partition?
		276	jnz test_ext_partition_0 ; no
1410	turbanoff	277
		278	pop eax
		279	add eax, [ebx+0x1be+8+16+16+16]
		280	mov edx, [ebx+0x1be+12+16+16+16]
		281	mov cl, [ebx+0x1be+4+16+16+16]
		282	jmp hd_and_partition_ok
65	mario79	283
1410	turbanoff	284	;mov edx, eax
		285	;add edx, [ebx+0x1be+8+16+16+16]
		286	;push edx
		287	;add edx, [ebx+0x1be+12+16+16+16]
		288	;dec edx
		289	;mov [PARTITION_END], edx
		290	;mov al, [ebx+0x1be+4+16+16+16]
		291	;mov [fs_type], dl
		292	;pop edx
65	mario79	293
1410	turbanoff	294	test_ext_partition_0:
		295	pop eax ; �� 모�뢠�� ⥪�
65	mario79	296	mov al,[ebx+0x1be+4] ; get extended partition type
		297	call scan_extended_types
1378	turbanoff	298	jnz test_ext_partition_1
65	mario79	299
		300	mov eax,[ebx+0x1be+8] ; add relative start
		301	test eax,eax ; is there extended partition?
1378	turbanoff	302	jnz new_mbr ; yes. read it
65	mario79	303
1378	turbanoff	304	test_ext_partition_1:
65	mario79	305	mov al,[ebx+0x1be+4+16] ; get extended partition type
		306	call scan_extended_types
1378	turbanoff	307	jnz test_ext_partition_2
65	mario79	308
1378	turbanoff	309	mov eax,[ebx+0x1be+8+16] ; add relative start
65	mario79	310	test eax,eax ; is there extended partition?
1378	turbanoff	311	jnz new_mbr ; yes. read it
65	mario79	312
1378	turbanoff	313	test_ext_partition_2:
65	mario79	314	mov al,[ebx+0x1be+4+16+16] ; get extended partition type
		315	call scan_extended_types
1378	turbanoff	316	jnz test_ext_partition_3
65	mario79	317
		318	mov eax,[ebx+0x1be+8+16+16] ; add relative start
		319	test eax,eax ; is there extended partition?
1378	turbanoff	320	jnz new_mbr ; yes. read it
		321
		322	test_ext_partition_3:
65	mario79	323	mov al,[ebx+0x1be+4+16+16+16] ; get extended partition type
		324	call scan_extended_types
		325	jnz end_partition_chain ; no. end chain
		326
		327	mov eax,[ebx+0x1be+8+16+16+16] ; get start of extended partition
		328	test eax,eax ; is there extended partition?
1378	turbanoff	329	jnz new_mbr ; yes. read it
		330
65	mario79	331	end_partition_chain:
1410	turbanoff	332	;mov [partition_count],ecx
65	mario79	333
1410	turbanoff	334	;cmp edx,-1 ; found wanted partition?
		335	;jnz hd_and_partition_ok ; yes. install it
		336	;jmp problem_partition_or_fat
		337	problem_hd:
		338	or [problem_partition], 2
		339	jmp return_from_part_set
65	mario79	340
1410	turbanoff	341
65	mario79	342	scan_partition_types:
		343	push ecx
		344	mov edi,partition_types
		345	mov ecx,partition_types_end-partition_types
		346	cld
		347	repne scasb ; is partition type ok?
		348	pop ecx
		349	ret
		350
		351	scan_extended_types:
		352	push ecx
		353	mov edi,extended_types
		354	mov ecx,extended_types_end-extended_types
		355	cld
		356	repne scasb ; is it extended partition?
		357	pop ecx
		358	ret
		359
		360	problem_fat_dec_count: ; bootsector is missing or another problem
1410	turbanoff	361	; dec [partition_count] ; remove it from partition_count
65	mario79	362
		363	problem_partition_or_fat:
1410	turbanoff	364	or [problem_partition],1
		365
		366	return_from_part_set:
65	mario79	367	popad
1410	turbanoff	368	;mov [fs_type],0
321	diamond	369	call free_hd_channel
65	mario79	370	mov [hd1_status],0 ; free
		371	ret
		372
1410	turbanoff	373	hd_and_partition_ok:
		374
		375	;eax = PARTITION_START edx=PARTITION_LENGTH cl=fs_type
		376	mov [fs_type], cl
		377	;mov eax,edx
		378	mov [PARTITION_START],eax
		379	add edx, eax
		380	dec edx
		381	mov [PARTITION_END], edx
65	mario79	382
1410	turbanoff	383	; mov edx, [PARTITION_END]
		384	; sub edx, eax
		385	; inc edx ; edx = length of partition ��祬 �� ??
		386
256	diamond	387	; mov [hd_setup],1
65	mario79	388	mov ebx,buffer
		389	call hd_read ; read boot sector of partition
256	diamond	390	cmp [hd_error], 0
		391	jz boot_read_ok
		392	cmp [fs_type], 7
		393	jnz problem_fat_dec_count
		394	; NTFS duplicates bootsector:
		395	; NT4/2k/XP+ saves bootsector copy in the end of disk
		396	; NT 3.51 saves bootsector copy in the middle of disk
		397	and [hd_error], 0
		398	mov eax, [PARTITION_END]
		399	call hd_read
		400	cmp [hd_error], 0
		401	jnz @f
		402	call ntfs_test_bootsec
		403	jnc boot_read_ok
		404	@@:
		405	and [hd_error], 0
		406	mov eax, edx
		407	shr eax, 1
		408	add eax, [PARTITION_START]
		409	call hd_read
		410	cmp [hd_error], 0
1378	turbanoff	411	jnz problem_fat_dec_count ; no chance...
256	diamond	412	boot_read_ok:
1378	turbanoff	413
256	diamond	414	; if we are running on NTFS, check bootsector
74	mario79	415
1378	turbanoff	416	call ntfs_test_bootsec ; test ntfs
1379	turbanoff	417	jnc ntfs_setup
		418
		419	call ext2_test_superblock ; test ext2fs
1410	turbanoff	420	jnc ext2_setup
1379	turbanoff	421
1410	turbanoff	422	mov eax, [PARTITION_START] ;ext2 test changes [buffer]
		423	call hd_read
1379	turbanoff	424	cmp [hd_error], 0
1410	turbanoff	425	jnz problem_fat_dec_count
1378	turbanoff	426
65	mario79	427	cmp word [ebx+0x1fe],0xaa55 ; is it valid boot sector?
		428	jnz problem_fat_dec_count
		429
		430	movzx eax,word [ebx+0xe] ; sectors reserved
		431	add eax,[PARTITION_START]
		432	mov [FAT_START],eax ; fat_start = partition_start + reserved
		433
		434	movzx eax,byte [ebx+0xd] ; sectors per cluster
1190	diamond	435	test eax,eax
		436	jz problem_fat_dec_count
65	mario79	437	mov [SECTORS_PER_CLUSTER],eax
		438
		439	movzx ecx,word [ebx+0xb] ; bytes per sector
1191	diamond	440	cmp ecx,0x200
1190	diamond	441	jnz problem_fat_dec_count
65	mario79	442	mov [BYTES_PER_SECTOR],ecx
		443
		444	movzx eax,word [ebx+0x11] ; count of rootdir entries (=0 fat32)
		445	mov edx,32
		446	mul edx
		447	dec ecx
		448	add eax,ecx ; round up if not equal count
		449	inc ecx ; bytes per sector
		450	div ecx
		451	mov [ROOT_SECTORS],eax ; count of rootdir sectors
		452
		453	movzx eax,word [ebx+0x16] ; sectors per fat <65536
		454	test eax,eax
		455	jnz fat16_fatsize
		456	mov eax,[ebx+0x24] ; sectors per fat
		457	fat16_fatsize:
		458	mov [SECTORS_PER_FAT],eax
		459
		460	movzx eax,byte [ebx+0x10] ; number of fats
		461	test eax,eax ; if 0 it's not fat partition
		462	jz problem_fat_dec_count
		463	mov [NUMBER_OF_FATS],eax
		464	imul eax,[SECTORS_PER_FAT]
		465	add eax,[FAT_START]
		466	mov [ROOT_START],eax ; rootdir = fat_start + fat_size * fat_count
		467	add eax,[ROOT_SECTORS] ; rootdir sectors should be 0 on fat32
		468	mov [DATA_START],eax ; data area = rootdir + rootdir_size
		469
		470	movzx eax,word [ebx+0x13] ; total sector count <65536
		471	test eax,eax
		472	jnz fat16_total
		473	mov eax,[ebx+0x20] ; total sector count
		474	fat16_total:
		475	add eax,[PARTITION_START]
		476	dec eax
		477	mov [PARTITION_END],eax
		478	inc eax
		479	sub eax,[DATA_START] ; eax = count of data sectors
		480	xor edx,edx
		481	div dword [SECTORS_PER_CLUSTER]
		482	inc eax
		483	mov [LAST_CLUSTER],eax
		484	dec eax ; cluster count
649	diamond	485	mov [fatStartScan],2
65	mario79	486
		487	; limits by Microsoft Hardware White Paper v1.03
		488	cmp eax,4085 ; 0xff5
		489	jb problem_fat_dec_count ; fat12 not supported
		490	cmp eax,65525 ; 0xfff5
		491	jb fat16_partition
		492
		493	fat32_partition:
		494	mov eax,[ebx+0x2c] ; rootdir cluster
		495	mov [ROOT_CLUSTER],eax
		496	movzx eax,word [ebx+0x30] ; fs info sector
		497	add eax,[PARTITION_START]
		498	mov [ADR_FSINFO],eax
649	diamond	499	call hd_read
		500	mov eax,[ebx+0x1ec]
		501	cmp eax,-1
		502	jz @f
		503	mov [fatStartScan],eax
		504	@@:
65	mario79	505
		506	popad
		507
		508	mov [fatRESERVED],0x0FFFFFF6
		509	mov [fatBAD],0x0FFFFFF7
		510	mov [fatEND],0x0FFFFFF8
		511	mov [fatMASK],0x0FFFFFFF
256	diamond	512	mov [fs_type],32 ; Fat32
321	diamond	513	call free_hd_channel
65	mario79	514	mov [hd1_status],0 ; free
		515	ret
		516
		517	fat16_partition:
		518	xor eax,eax
		519	mov [ROOT_CLUSTER],eax
		520
		521	popad
		522
		523	mov [fatRESERVED],0x0000FFF6
		524	mov [fatBAD],0x0000FFF7
		525	mov [fatEND],0x0000FFF8
		526	mov [fatMASK],0x0000FFFF
256	diamond	527	mov [fs_type],16 ; Fat16
321	diamond	528	call free_hd_channel
65	mario79	529	mov [hd1_status],0 ; free
1410	turbanoff	530	ret
		531

Subversion Repositories Kolibri OS

(root)/kernel/branches/Kolibri-A/trunk/fs/part_set.inc @ 3487 – Rev 1419