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: 3539 $
		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	.global_desc_table dd ?
		76	.root_inode dd ? ; pointer to root inode in memory
		77	.inode_size dd ?
		78	.count_pointer_in_block dd ? ; block_size / 4
		79	.count_pointer_in_block_square dd ? ; (block_size / 4)**2
3539	clevermous	80	.ext2_save_block dd ? ; блок на глобальную 1 процедуру
		81	.ext2_temp_block dd ? ; блок для мелких процедур
		82	.ext2_save_inode dd ? ; inode на глобальную процедуру
		83	.ext2_temp_inode dd ? ; inode для мелких процедур
1419	turbanoff	84	.sb dd ? ; superblock
2288	clevermous	85	.groups_count dd ?
		86	if $ > fs_dependent_data_end
		87	ERROR:
		88	increase sizeof(fs_dependent_data)!
		89	end if
		90	end virtual
1410	turbanoff	91
2288	clevermous	92	;***************************************************************************
		93	; End place
		94	; Mario79
		95	;***************************************************************************
		96	endg
		97	iglobal
		98
		99	partition_types: ; list of fat16/32 partitions
		100	db 0x04 ; DOS: fat16 <32M
		101	db 0x06 ; DOS: fat16 >32M
		102	db 0x0b ; WIN95: fat32
		103	db 0x0c ; WIN95: fat32, LBA-mapped
		104	db 0x0e ; WIN95: fat16, LBA-mapped
		105	db 0x14 ; Hidden DOS: fat16 <32M
		106	db 0x16 ; Hidden DOS: fat16 >32M
		107	db 0x1b ; Hidden WIN95: fat32
		108	db 0x1c ; Hidden WIN95: fat32, LBA-mapped
		109	db 0x1e ; Hidden WIN95: fat16, LBA-mapped
		110	db 0xc4 ; DRDOS/secured: fat16 <32M
		111	db 0xc6 ; DRDOS/secured: fat16 >32M
		112	db 0xcb ; DRDOS/secured: fat32
		113	db 0xcc ; DRDOS/secured: fat32, LBA-mapped
		114	db 0xce ; DRDOS/secured: fat16, LBA-mapped
		115	db 0xd4 ; Old Multiuser DOS secured: fat16 <32M
		116	db 0xd6 ; Old Multiuser DOS secured: fat16 >32M
		117	db 0x07 ; NTFS
		118	db 0x27 ; NTFS, hidden
		119	db 0x83 ; Linux native file system (ext2fs)
		120	partition_types_end:
		121
		122
		123	extended_types: ; list of extended partitions
		124	db 0x05 ; DOS: extended partition
		125	db 0x0f ; WIN95: extended partition, LBA-mapped
		126	db 0xc5 ; DRDOS/secured: extended partition
		127	db 0xd5 ; Old Multiuser DOS secured: extended partition
		128	extended_types_end:
		129
		130	endg
		131
		132	; Partition chain used:
		133	; MBR <---------------------
		134	; \| \|
		135	; \|-> PARTITION1 \|
		136	; \|-> EXTENDED PARTITION - ;not need be second partition
		137	; \|-> PARTITION3
		138	; \|-> PARTITION4
		139
		140	set_PARTITION_variables:
		141	set_FAT32_variables: ;deprecated
		142	and [problem_partition], 0
		143	call reserve_hd1
		144	call reserve_hd_channel
		145
		146	pushad
		147
		148	cmp dword [hdpos], 0
		149	je problem_hd
		150
		151	xor ecx, ecx ; partition count
		152	;or edx,-1 ; flag for partition
		153	xor eax, eax ; address MBR
		154	xor ebp, ebp ; extended partition start
		155
		156	new_mbr:
		157	test ebp, ebp ; is there extended partition? (MBR or EMBR)
		158	jnz extended_already_set; yes
		159	xchg ebp, eax ; no. set it now
		160
		161	extended_already_set:
		162	add eax, ebp ; mbr=mbr+0, ext_part=ext_start+relat_start
		163	mov ebx, buffer
		164	call hd_read
		165	cmp [hd_error], 0
		166	jne problem_hd
		167
		168	cmp word [ebx+0x1fe], 0xaa55; is it valid boot sector?
		169	jnz end_partition_chain
		170	push eax ; push only one time
		171	cmp dword [ebx+0x1be+0xc], 0; skip over empty partition
		172	jnz test_primary_partition_0
		173	cmp dword [ebx+0x1be+0xc+16], 0
		174	jnz test_primary_partition_1
		175	cmp dword [ebx+0x1be+0xc+16+16], 0
		176	jnz test_primary_partition_2
		177	cmp dword [ebx+0x1be+0xc+16+16+16], 0
		178	jnz test_primary_partition_3
		179	pop eax
		180	jmp end_partition_chain
		181
		182	test_primary_partition_0:
		183	mov al, [ebx+0x1be+4]; get primary partition type
		184	call scan_partition_types
		185	jnz test_primary_partition_1; no. skip over
		186
		187	inc ecx
		188	cmp ecx, [known_part]; is it wanted partition?
		189	jnz test_primary_partition_1; no
		190
		191	pop eax
		192	;mov edx, eax ; start sector
1410	turbanoff	193	add eax, [ebx+0x1be+8] ; add relative start
2288	clevermous	194	;mov [PARTITON_START],edx
1410	turbanoff	195	;push edx
2288	clevermous	196	mov edx, [ebx+0x1be+12] ; length
		197	;add edx, eax ; add length
		198	;dec edx ; PARTITION_END is inclusive
		199	;mov [PARTITION_END], edx ; note that this can be changed
		200	; when file system data will be available
		201	mov cl, [ebx+0x1be+4] ; fs_type
		202	;mov [fs_type], dl ; save for FS recognizer (separate FAT vs NTFS)
1410	turbanoff	203	;pop edx
2288	clevermous	204	jmp hd_and_partition_ok
1410	turbanoff	205
2288	clevermous	206	test_primary_partition_1:
		207	mov al, [ebx+0x1be+4+16]; get primary partition type
		208	call scan_partition_types
		209	jnz test_primary_partition_2 ; no. skip over
		210
		211	inc ecx
		212	cmp ecx, [known_part]; is it wanted partition?
		213	jnz test_primary_partition_2 ; no
		214
1410	turbanoff	215	pop eax
		216	add eax, [ebx+0x1be+8+16]
		217	mov edx, [ebx+0x1be+12+16]
		218	mov cl, [ebx+0x1be+4+16]
		219	jmp hd_and_partition_ok
		220
2288	clevermous	221	;mov edx, eax
		222	;add edx, [ebx+0x1be+8+16]
		223	;push edx
		224	;add edx, [ebx+0x1be+12+16]
		225	;dec edx
		226	;mov [PARTITION_END], edx
		227	;mov al, [ebx+0x1be+4+16]
		228	;mov [fs_type], dl
		229	;pop edx
		230
		231	test_primary_partition_2:
		232	mov al, [ebx+0x1be+4+16+16]; get primary partition type
		233	call scan_partition_types
		234	jnz test_primary_partition_3 ; no. skip over
		235
		236	inc ecx
		237	cmp ecx, [known_part]; is it wanted partition?
		238	jnz test_primary_partition_3 ; no
		239
1410	turbanoff	240	pop eax
		241	add eax, [ebx+0x1be+8+16+16]
		242	mov edx, [ebx+0x1be+12+16+16]
		243	mov cl, [ebx+0x1be+4+16+16]
2288	clevermous	244	jmp hd_and_partition_ok
		245	;mov edx, eax
		246	;add edx, [ebx+0x1be+8+16+16]
		247	;push edx
		248	;add edx, [ebx+0x1be+12+16+16]
		249	;dec edx
		250	;mov [PARTITION_END], edx
		251	;mov al, [ebx+0x1be+4+16+16]
		252	;mov [fs_type], dl
		253	;pop edx
1410	turbanoff	254
2288	clevermous	255	test_primary_partition_3:
		256	mov al, [ebx+0x1be+4+16+16+16]; get primary partition type
		257	call scan_partition_types
		258	jnz test_ext_partition_0 ; no. skip over
		259
		260	inc ecx
		261	cmp ecx, [known_part]; is it wanted partition?
		262	jnz test_ext_partition_0; no
		263
1410	turbanoff	264	pop eax
		265	add eax, [ebx+0x1be+8+16+16+16]
		266	mov edx, [ebx+0x1be+12+16+16+16]
		267	mov cl, [ebx+0x1be+4+16+16+16]
		268	jmp hd_and_partition_ok
2288	clevermous	269
		270	;mov edx, eax
		271	;add edx, [ebx+0x1be+8+16+16+16]
		272	;push edx
		273	;add edx, [ebx+0x1be+12+16+16+16]
		274	;dec edx
		275	;mov [PARTITION_END], edx
		276	;mov al, [ebx+0x1be+4+16+16+16]
		277	;mov [fs_type], dl
		278	;pop edx
		279
1410	turbanoff	280	test_ext_partition_0:
3539	clevermous	281	pop eax ; просто выкидываем из стека
2288	clevermous	282	mov al, [ebx+0x1be+4]; get extended partition type
		283	call scan_extended_types
		284	jnz test_ext_partition_1
		285
		286	mov eax, [ebx+0x1be+8]; add relative start
		287	test eax, eax ; is there extended partition?
		288	jnz new_mbr ; yes. read it
		289
		290	test_ext_partition_1:
		291	mov al, [ebx+0x1be+4+16]; get extended partition type
		292	call scan_extended_types
		293	jnz test_ext_partition_2
		294
		295	mov eax, [ebx+0x1be+8+16]; add relative start
		296	test eax, eax ; is there extended partition?
		297	jnz new_mbr ; yes. read it
		298
		299	test_ext_partition_2:
		300	mov al, [ebx+0x1be+4+16+16]; get extended partition type
		301	call scan_extended_types
		302	jnz test_ext_partition_3
		303
		304	mov eax, [ebx+0x1be+8+16+16]; add relative start
		305	test eax, eax ; is there extended partition?
		306	jnz new_mbr ; yes. read it
		307
		308	test_ext_partition_3:
		309	mov al, [ebx+0x1be+4+16+16+16]; get extended partition type
		310	call scan_extended_types
		311	jnz end_partition_chain; no. end chain
		312
		313	mov eax, [ebx+0x1be+8+16+16+16]; get start of extended partition
		314	test eax, eax ; is there extended partition?
		315	jnz new_mbr ; yes. read it
		316
		317	end_partition_chain:
		318	;mov [partition_count],ecx
		319
		320	;cmp edx,-1 ; found wanted partition?
		321	;jnz hd_and_partition_ok ; yes. install it
1410	turbanoff	322	;jmp problem_partition_or_fat
		323	problem_hd:
2288	clevermous	324	or [problem_partition], 2
		325	jmp return_from_part_set
1410	turbanoff	326
2288	clevermous	327
		328	scan_partition_types:
		329	push ecx
		330	mov edi, partition_types
		331	mov ecx, partition_types_end-partition_types
		332	cld
		333	repne scasb ; is partition type ok?
		334	pop ecx
		335	ret
		336
		337	scan_extended_types:
		338	push ecx
		339	mov edi, extended_types
		340	mov ecx, extended_types_end-extended_types
		341	cld
		342	repne scasb ; is it extended partition?
		343	pop ecx
		344	ret
		345
		346	problem_fat_dec_count: ; bootsector is missing or another problem
		347	; dec [partition_count] ; remove it from partition_count
		348
		349	problem_partition_or_fat:
		350	or [problem_partition], 1
		351
		352	return_from_part_set:
		353	popad
		354	;mov [fs_type],0
		355	call free_hd_channel
		356	mov [hd1_status], 0 ; free
		357	ret
		358
1410	turbanoff	359	hd_and_partition_ok:
		360
		361	;eax = PARTITION_START edx=PARTITION_LENGTH cl=fs_type
2288	clevermous	362	mov [fs_type], cl
		363	;mov eax,edx
		364	mov [PARTITION_START], eax
		365	add edx, eax
		366	dec edx
		367	mov [PARTITION_END], edx
1410	turbanoff	368
2288	clevermous	369	; mov edx, [PARTITION_END]
		370	; sub edx, eax
3539	clevermous	371	; inc edx ; edx = length of partition зачем оно нам??
2288	clevermous	372
		373	; mov [hd_setup],1
		374	mov ebx, buffer
		375	call hd_read ; read boot sector of partition
		376	cmp [hd_error], 0
		377	jz boot_read_ok
		378	cmp [fs_type], 7
		379	jnz problem_fat_dec_count
		380	; NTFS duplicates bootsector:
		381	; NT4/2k/XP+ saves bootsector copy in the end of disk
		382	; NT 3.51 saves bootsector copy in the middle of disk
		383	and [hd_error], 0
		384	mov eax, [PARTITION_END]
		385	call hd_read
		386	cmp [hd_error], 0
		387	jnz @f
		388	call ntfs_test_bootsec
		389	jnc boot_read_ok
		390	@@:
		391	and [hd_error], 0
		392	mov eax, edx
		393	shr eax, 1
		394	add eax, [PARTITION_START]
		395	call hd_read
		396	cmp [hd_error], 0
		397	jnz problem_fat_dec_count ; no chance...
		398	boot_read_ok:
		399
		400	; if we are running on NTFS, check bootsector
		401
		402	call ntfs_test_bootsec ; test ntfs
		403	jnc ntfs_setup
		404
		405	call ext2_test_superblock ; test ext2fs
		406	jnc ext2_setup
		407
		408	mov eax, [PARTITION_START] ;ext2 test changes [buffer]
		409	call hd_read
		410	cmp [hd_error], 0
		411	jnz problem_fat_dec_count
		412
2643	clevermous	413	push 0
		414	mov eax, [PARTITION_END]
		415	sub eax, [PARTITION_START]
		416	inc eax
		417	push eax
		418	push 0
		419	push [PARTITION_START]
		420	push ebp
		421	push ebp
		422	mov ebp, esp
		423	mov esi, 'old' ; special value: there is no DISK structure
		424	push 1 ; bootsector read successfully
		425	call fat_create_partition
		426	add esp, 4*7
2288	clevermous	427	test eax, eax
		428	jz problem_fat_dec_count
2643	clevermous	429	mov [fs_dependent_data_start.partition], eax
		430	mov al, [eax+FAT.fs_type]
		431	mov [fs_type], al
2288	clevermous	432
		433	popad
		434	call free_hd_channel
		435	mov [hd1_status], 0 ; free
		436	ret

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(root)/kernel/trunk/fs/part_set.inc – Rev 3539