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

Rev	Author	Line No.	Line
2288	clevermous	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		2	;; ;;
2455	mario79	3	;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;;
2288	clevermous	4	;; Distributed under terms of the GNU General Public License ;;
		5	;; ;;
		6	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		7
		8	$Revision: 2643 $
		9
		10
1410	turbanoff	11	;*************************************************************
2288	clevermous	12	;* 13.02.2010 Find all partition and check supported FS
		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
		18	;*************************************************************
		19
		20	uglobal
		21	align 4
		22
		23	;******************************************************
		24	; Please do not change this place - variables in text
		25	; Mario79
		26	; START place
		27	;******************************************************
		28	PARTITION_START dd 0x3f
		29	PARTITION_END dd 0
		30	fs_type db 0 ; 1=NTFS, 2=EXT2/3, 16=FAT16, 32=FAT32
		31	align 4
		32
		33	fs_dependent_data_start:
		34	; FATxx data
		35
2643	clevermous	36	.partition dd ?
		37	rb 80
2288	clevermous	38
		39	fs_dependent_data_end:
		40	file_system_data_size = $ - PARTITION_START
		41	if file_system_data_size > 96
		42	ERROR:
		43	sizeof(file system data) too big!
		44	end if
		45
		46	virtual at fs_dependent_data_start
		47	; NTFS data
		48	ntfs_data:
		49	.sectors_per_cluster dd ?
		50	.mft_cluster dd ?
		51	.mftmirr_cluster dd ?
		52	.frs_size dd ? ; FRS size in bytes
		53	.iab_size dd ? ; IndexAllocationBuffer size in bytes
		54	.frs_buffer dd ?
		55	.iab_buffer dd ?
		56	.mft_retrieval dd ?
		57	.mft_retrieval_size dd ?
		58	.mft_retrieval_alloc dd ?
		59	.mft_retrieval_end dd ?
		60	.cur_index_size dd ?
		61	.cur_index_buf dd ?
		62	if $ > fs_dependent_data_end
		63	ERROR:
		64	increase sizeof(fs_dependent_data)!
		65	end if
		66	end virtual
		67
		68	virtual at fs_dependent_data_start
		69	; EXT2 data
		70	ext2_data:
		71	.log_block_size dd ?
		72	.block_size dd ?
		73	.count_block_in_block dd ?
		74	.blocks_per_group dd ?
		75	.inodes_per_group dd ?
		76	.global_desc_table dd ?
		77	.root_inode dd ? ; pointer to root inode in memory
		78	.inode_size dd ?
		79	.count_pointer_in_block dd ? ; block_size / 4
		80	.count_pointer_in_block_square dd ? ; (block_size / 4)**2
		81	.ext2_save_block dd ? ; �� 1 ��楤��
		82	.ext2_temp_block dd ? ; �� 楤��
		83	.ext2_save_inode dd ? ; inode �� 楤��
1419	turbanoff	84	.ext2_temp_inode dd ? ; inode �� 楤��
		85	.sb dd ? ; superblock
2288	clevermous	86	.groups_count dd ?
		87	if $ > fs_dependent_data_end
		88	ERROR:
		89	increase sizeof(fs_dependent_data)!
		90	end if
		91	end virtual
1410	turbanoff	92
2288	clevermous	93	;***************************************************************************
		94	; End place
		95	; Mario79
		96	;***************************************************************************
		97	endg
		98	iglobal
		99
		100	partition_types: ; list of fat16/32 partitions
		101	db 0x04 ; DOS: fat16 <32M
		102	db 0x06 ; DOS: fat16 >32M
		103	db 0x0b ; WIN95: fat32
		104	db 0x0c ; WIN95: fat32, LBA-mapped
		105	db 0x0e ; WIN95: fat16, LBA-mapped
		106	db 0x14 ; Hidden DOS: fat16 <32M
		107	db 0x16 ; Hidden DOS: fat16 >32M
		108	db 0x1b ; Hidden WIN95: fat32
		109	db 0x1c ; Hidden WIN95: fat32, LBA-mapped
		110	db 0x1e ; Hidden WIN95: fat16, LBA-mapped
		111	db 0xc4 ; DRDOS/secured: fat16 <32M
		112	db 0xc6 ; DRDOS/secured: fat16 >32M
		113	db 0xcb ; DRDOS/secured: fat32
		114	db 0xcc ; DRDOS/secured: fat32, LBA-mapped
		115	db 0xce ; DRDOS/secured: fat16, LBA-mapped
		116	db 0xd4 ; Old Multiuser DOS secured: fat16 <32M
		117	db 0xd6 ; Old Multiuser DOS secured: fat16 >32M
		118	db 0x07 ; NTFS
		119	db 0x27 ; NTFS, hidden
		120	db 0x83 ; Linux native file system (ext2fs)
		121	partition_types_end:
		122
		123
		124	extended_types: ; list of extended partitions
		125	db 0x05 ; DOS: extended partition
		126	db 0x0f ; WIN95: extended partition, LBA-mapped
		127	db 0xc5 ; DRDOS/secured: extended partition
		128	db 0xd5 ; Old Multiuser DOS secured: extended partition
		129	extended_types_end:
		130
		131	endg
		132
		133	; Partition chain used:
		134	; MBR <---------------------
		135	; \| \|
		136	; \|-> PARTITION1 \|
		137	; \|-> EXTENDED PARTITION - ;not need be second partition
		138	; \|-> PARTITION3
		139	; \|-> PARTITION4
		140
		141	set_PARTITION_variables:
		142	set_FAT32_variables: ;deprecated
		143	and [problem_partition], 0
		144	call reserve_hd1
		145	call reserve_hd_channel
		146
		147	pushad
		148
		149	cmp dword [hdpos], 0
		150	je problem_hd
		151
		152	xor ecx, ecx ; partition count
		153	;or edx,-1 ; flag for partition
		154	xor eax, eax ; address MBR
		155	xor ebp, ebp ; extended partition start
		156
		157	new_mbr:
		158	test ebp, ebp ; is there extended partition? (MBR or EMBR)
		159	jnz extended_already_set; yes
		160	xchg ebp, eax ; no. set it now
		161
		162	extended_already_set:
		163	add eax, ebp ; mbr=mbr+0, ext_part=ext_start+relat_start
		164	mov ebx, buffer
		165	call hd_read
		166	cmp [hd_error], 0
		167	jne problem_hd
		168
		169	cmp word [ebx+0x1fe], 0xaa55; is it valid boot sector?
		170	jnz end_partition_chain
		171	push eax ; push only one time
		172	cmp dword [ebx+0x1be+0xc], 0; skip over empty partition
		173	jnz test_primary_partition_0
		174	cmp dword [ebx+0x1be+0xc+16], 0
		175	jnz test_primary_partition_1
		176	cmp dword [ebx+0x1be+0xc+16+16], 0
		177	jnz test_primary_partition_2
		178	cmp dword [ebx+0x1be+0xc+16+16+16], 0
		179	jnz test_primary_partition_3
		180	pop eax
		181	jmp end_partition_chain
		182
		183	test_primary_partition_0:
		184	mov al, [ebx+0x1be+4]; get primary partition type
		185	call scan_partition_types
		186	jnz test_primary_partition_1; no. skip over
		187
		188	inc ecx
		189	cmp ecx, [known_part]; is it wanted partition?
		190	jnz test_primary_partition_1; no
		191
		192	pop eax
		193	;mov edx, eax ; start sector
1410	turbanoff	194	add eax, [ebx+0x1be+8] ; add relative start
2288	clevermous	195	;mov [PARTITON_START],edx
1410	turbanoff	196	;push edx
2288	clevermous	197	mov edx, [ebx+0x1be+12] ; length
		198	;add edx, eax ; add length
		199	;dec edx ; PARTITION_END is inclusive
		200	;mov [PARTITION_END], edx ; note that this can be changed
		201	; when file system data will be available
		202	mov cl, [ebx+0x1be+4] ; fs_type
		203	;mov [fs_type], dl ; save for FS recognizer (separate FAT vs NTFS)
1410	turbanoff	204	;pop edx
2288	clevermous	205	jmp hd_and_partition_ok
1410	turbanoff	206
2288	clevermous	207	test_primary_partition_1:
		208	mov al, [ebx+0x1be+4+16]; get primary partition type
		209	call scan_partition_types
		210	jnz test_primary_partition_2 ; no. skip over
		211
		212	inc ecx
		213	cmp ecx, [known_part]; is it wanted partition?
		214	jnz test_primary_partition_2 ; no
		215
1410	turbanoff	216	pop eax
		217	add eax, [ebx+0x1be+8+16]
		218	mov edx, [ebx+0x1be+12+16]
		219	mov cl, [ebx+0x1be+4+16]
		220	jmp hd_and_partition_ok
		221
2288	clevermous	222	;mov edx, eax
		223	;add edx, [ebx+0x1be+8+16]
		224	;push edx
		225	;add edx, [ebx+0x1be+12+16]
		226	;dec edx
		227	;mov [PARTITION_END], edx
		228	;mov al, [ebx+0x1be+4+16]
		229	;mov [fs_type], dl
		230	;pop edx
		231
		232	test_primary_partition_2:
		233	mov al, [ebx+0x1be+4+16+16]; get primary partition type
		234	call scan_partition_types
		235	jnz test_primary_partition_3 ; no. skip over
		236
		237	inc ecx
		238	cmp ecx, [known_part]; is it wanted partition?
		239	jnz test_primary_partition_3 ; no
		240
1410	turbanoff	241	pop eax
		242	add eax, [ebx+0x1be+8+16+16]
		243	mov edx, [ebx+0x1be+12+16+16]
		244	mov cl, [ebx+0x1be+4+16+16]
2288	clevermous	245	jmp hd_and_partition_ok
		246	;mov edx, eax
		247	;add edx, [ebx+0x1be+8+16+16]
		248	;push edx
		249	;add edx, [ebx+0x1be+12+16+16]
		250	;dec edx
		251	;mov [PARTITION_END], edx
		252	;mov al, [ebx+0x1be+4+16+16]
		253	;mov [fs_type], dl
		254	;pop edx
1410	turbanoff	255
2288	clevermous	256	test_primary_partition_3:
		257	mov al, [ebx+0x1be+4+16+16+16]; get primary partition type
		258	call scan_partition_types
		259	jnz test_ext_partition_0 ; no. skip over
		260
		261	inc ecx
		262	cmp ecx, [known_part]; is it wanted partition?
		263	jnz test_ext_partition_0; no
		264
1410	turbanoff	265	pop eax
		266	add eax, [ebx+0x1be+8+16+16+16]
		267	mov edx, [ebx+0x1be+12+16+16+16]
		268	mov cl, [ebx+0x1be+4+16+16+16]
		269	jmp hd_and_partition_ok
2288	clevermous	270
		271	;mov edx, eax
		272	;add edx, [ebx+0x1be+8+16+16+16]
		273	;push edx
		274	;add edx, [ebx+0x1be+12+16+16+16]
		275	;dec edx
		276	;mov [PARTITION_END], edx
		277	;mov al, [ebx+0x1be+4+16+16+16]
		278	;mov [fs_type], dl
		279	;pop edx
		280
1410	turbanoff	281	test_ext_partition_0:
2288	clevermous	282	pop eax ; �� 모�뢠�� ⥪�
		283	mov al, [ebx+0x1be+4]; get extended partition type
		284	call scan_extended_types
		285	jnz test_ext_partition_1
		286
		287	mov eax, [ebx+0x1be+8]; add relative start
		288	test eax, eax ; is there extended partition?
		289	jnz new_mbr ; yes. read it
		290
		291	test_ext_partition_1:
		292	mov al, [ebx+0x1be+4+16]; get extended partition type
		293	call scan_extended_types
		294	jnz test_ext_partition_2
		295
		296	mov eax, [ebx+0x1be+8+16]; add relative start
		297	test eax, eax ; is there extended partition?
		298	jnz new_mbr ; yes. read it
		299
		300	test_ext_partition_2:
		301	mov al, [ebx+0x1be+4+16+16]; get extended partition type
		302	call scan_extended_types
		303	jnz test_ext_partition_3
		304
		305	mov eax, [ebx+0x1be+8+16+16]; add relative start
		306	test eax, eax ; is there extended partition?
		307	jnz new_mbr ; yes. read it
		308
		309	test_ext_partition_3:
		310	mov al, [ebx+0x1be+4+16+16+16]; get extended partition type
		311	call scan_extended_types
		312	jnz end_partition_chain; no. end chain
		313
		314	mov eax, [ebx+0x1be+8+16+16+16]; get start of extended partition
		315	test eax, eax ; is there extended partition?
		316	jnz new_mbr ; yes. read it
		317
		318	end_partition_chain:
		319	;mov [partition_count],ecx
		320
		321	;cmp edx,-1 ; found wanted partition?
		322	;jnz hd_and_partition_ok ; yes. install it
1410	turbanoff	323	;jmp problem_partition_or_fat
		324	problem_hd:
2288	clevermous	325	or [problem_partition], 2
		326	jmp return_from_part_set
1410	turbanoff	327
2288	clevermous	328
		329	scan_partition_types:
		330	push ecx
		331	mov edi, partition_types
		332	mov ecx, partition_types_end-partition_types
		333	cld
		334	repne scasb ; is partition type ok?
		335	pop ecx
		336	ret
		337
		338	scan_extended_types:
		339	push ecx
		340	mov edi, extended_types
		341	mov ecx, extended_types_end-extended_types
		342	cld
		343	repne scasb ; is it extended partition?
		344	pop ecx
		345	ret
		346
		347	problem_fat_dec_count: ; bootsector is missing or another problem
		348	; dec [partition_count] ; remove it from partition_count
		349
		350	problem_partition_or_fat:
		351	or [problem_partition], 1
		352
		353	return_from_part_set:
		354	popad
		355	;mov [fs_type],0
		356	call free_hd_channel
		357	mov [hd1_status], 0 ; free
		358	ret
		359
1410	turbanoff	360	hd_and_partition_ok:
		361
		362	;eax = PARTITION_START edx=PARTITION_LENGTH cl=fs_type
2288	clevermous	363	mov [fs_type], cl
		364	;mov eax,edx
		365	mov [PARTITION_START], eax
		366	add edx, eax
		367	dec edx
		368	mov [PARTITION_END], edx
1410	turbanoff	369
2288	clevermous	370	; mov edx, [PARTITION_END]
		371	; sub edx, eax
		372	; inc edx ; edx = length of partition ��祬 �� ??
		373
		374	; mov [hd_setup],1
		375	mov ebx, buffer
		376	call hd_read ; read boot sector of partition
		377	cmp [hd_error], 0
		378	jz boot_read_ok
		379	cmp [fs_type], 7
		380	jnz problem_fat_dec_count
		381	; NTFS duplicates bootsector:
		382	; NT4/2k/XP+ saves bootsector copy in the end of disk
		383	; NT 3.51 saves bootsector copy in the middle of disk
		384	and [hd_error], 0
		385	mov eax, [PARTITION_END]
		386	call hd_read
		387	cmp [hd_error], 0
		388	jnz @f
		389	call ntfs_test_bootsec
		390	jnc boot_read_ok
		391	@@:
		392	and [hd_error], 0
		393	mov eax, edx
		394	shr eax, 1
		395	add eax, [PARTITION_START]
		396	call hd_read
		397	cmp [hd_error], 0
		398	jnz problem_fat_dec_count ; no chance...
		399	boot_read_ok:
		400
		401	; if we are running on NTFS, check bootsector
		402
		403	call ntfs_test_bootsec ; test ntfs
		404	jnc ntfs_setup
		405
		406	call ext2_test_superblock ; test ext2fs
		407	jnc ext2_setup
		408
		409	mov eax, [PARTITION_START] ;ext2 test changes [buffer]
		410	call hd_read
		411	cmp [hd_error], 0
		412	jnz problem_fat_dec_count
		413
2643	clevermous	414	push 0
		415	mov eax, [PARTITION_END]
		416	sub eax, [PARTITION_START]
		417	inc eax
		418	push eax
		419	push 0
		420	push [PARTITION_START]
		421	push ebp
		422	push ebp
		423	mov ebp, esp
		424	mov esi, 'old' ; special value: there is no DISK structure
		425	push 1 ; bootsector read successfully
		426	call fat_create_partition
		427	add esp, 4*7
2288	clevermous	428	test eax, eax
		429	jz problem_fat_dec_count
2643	clevermous	430	mov [fs_dependent_data_start.partition], eax
		431	mov al, [eax+FAT.fs_type]
		432	mov [fs_type], al
2288	clevermous	433
		434	popad
		435	call free_hd_channel
		436	mov [hd1_status], 0 ; free
		437	ret

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(root)/kernel/trunk/fs/part_set.inc – Rev 2643