WebSVN – Kolibri OS – Diff – /kernel/trunk/fs/ext.inc



;; Copyright (C) KolibriOS team 2013-2016. All rights reserved. ;;
;;  Distributed under terms of the GNU General Public License.  ;;
;;                                                              ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

 

$Revision: 6468 $
 
; EXT external functions
;   in:
; ebx -> parameter structure of sysfunc 70
; ebp -> EXTFS structure
; esi -> path string
;   out:
; eax, ebx = return values for sysfunc 70
iglobal

        mov     byte [edi], 0
        inc     edi
        pop     esi
.get_inode:
        push    ebx edx
        call    findInode
        pop     edx ebx
        ret

 
findInode:
; in: esi -> path string
;   out:
; [ebp+EXTFS.mainInodeBuffer] = inode
; esi = inode number
;  dl = first byte of file/folder name

        rep movsb
        pop     ecx edi
        xor     eax, eax
        xor     dl, dl
        mov     esi, ROOT_INODE
        ret

 
.next_path_part:
        push    [edx+INODE.sectorsUsed]
        xor     ecx, ecx

        pop     edx edi ecx
; ebx -> matched directory entry, esi -> name without parent, or not changed
        cmp     edi, esi
        je      .next_folder_block
        cmp     byte [esi], 0
 
 
        je      .get_inode_ret
 
 
 
        mov     eax, [ebx+DIRENTRY.inodeNumber]
        lea     ebx, [ebp+EXTFS.mainInodeBuffer]
        call    readInode
        jc      .error_get_inode
        movzx   eax, [ebx+INODE.accessMode]

        mov     dl, [ebx+DIRENTRY.name]
        mov     eax, [ebx+DIRENTRY.inodeNumber]
        lea     ebx, [ebp+EXTFS.mainInodeBuffer]
        mov     esi, eax
        call    readInode
        ret

 
.not_found:
        movi    eax, ERROR_FILE_NOT_FOUND
        stc

        ret
 
.error_get_block:
        pop     ebx
.error_get_inode:

        pop     ebx
        ret
 
writeSuperblock:

ext_ReadFolder:
        call    ext_lock
        cmp     byte [esi], 0
        jz      .root_folder
        push    ebx
        call    findInode
        pop     ebx
        jc      .error_ret
        lea     esi, [ebp+EXTFS.mainInodeBuffer]
        test    [esi+INODE.accessMode], DIRECTORY
        jz      .error_not_found

        call    ext_lock
        push    ERROR_ACCESS_DENIED
        cmp     byte [esi], 0
        jz      .error  ; root
        mov     [esp], ebx
        call    findInode
        pop     ebx
        jc      .error_eax
        push    ERROR_ACCESS_DENIED
        lea     esi, [ebp+EXTFS.mainInodeBuffer]
        mov     ax, [esi+INODE.accessMode]

        call    ext_lock
        mov     edx, [ebx+16]
        cmp     byte [esi], 0
        jz      .is_root
        push    edx
        call    findInode
        mov     ebx, edx
        pop     edx
        lea     esi, [ebp+EXTFS.mainInodeBuffer]
        jnc     @f
        push    eax

 
;----------------------------------------------------------------
ext_SetFileInfo:
        call    extfsWritingInit
        pushd   [ebx+16]
        call    findInode
        pop     edx
        jc      @f
        push    esi     ; inode number
        lea     esi, [edx+16]

 
;----------------------------------------------------------------
ext_Delete:
        call    extfsWritingInit
        push    esi
        call    findInode
        mov     ebx, esi
        pop     esi
        push    eax
        jc      .ret

 
;----------------------------------------------------------------
ext_CreateFolder:
        call    extfsWritingInit
        push    esi
        call    findInode
        pop     esi
        jnc     .success    ; exist
        call    findInode_parent
        jc      .error

 
;----------------------------------------------------------------
ext_CreateFile:
        call    extfsWritingInit
        push    ebx esi
        call    findInode
        mov     esi, [esp]
        jc      @f
        call    ext_unlock
        call    ext_Delete
        push    eax
        call    ext_lock
        pop     eax
        test    eax, eax
        jnz     .error

 
;----------------------------------------------------------------
ext_WriteFile:
        call    extfsWritingInit
        push    0 ebx
        call    findInode
        jc      .error
        lea     edx, [ebp+EXTFS.mainInodeBuffer]
        movi    eax, ERROR_ACCESS_DENIED
        test    [edx+INODE.accessMode], FLAG_FILE

 
;----------------------------------------------------------------
ext_SetFileEnd:
        call    extfsWritingInit
        pushd   [ebx+4]
        call    findInode
        pop     ecx
        jc      @f
        lea     edx, [ebp+EXTFS.mainInodeBuffer]
        movi    eax, ERROR_ACCESS_DENIED

Rev 6462	Rev 6468
Line 3...	Line 3...
3	;; Copyright (C) KolibriOS team 2013-2016. All rights reserved. ;;	3	;; Copyright (C) KolibriOS team 2013-2016. All rights reserved. ;;
4	;; Distributed under terms of the GNU General Public License. ;;	4	;; Distributed under terms of the GNU General Public License. ;;
5	;; ;;	5	;; ;;
6	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	6	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
Line 7...	Line 7...
7		7
Line 8...	Line 8...
8	$Revision: 6462 $	8	$Revision: 6468 $
9		9
10	; EXT external functions	10	; EXT external functions
11	; in:	11	; in:
12	; ebx -> parameter structure of sysfunc 70	12	; ebx -> parameter structure of sysfunc 70
13	; ebp -> EXTFS structure	13	; ebp -> EXTFS structure
14	; [esi]+[[esp+4]] = name	14	; esi -> path string
15	; out:	15	; out:
16	; eax, ebx = return values for sysfunc 70	16	; eax, ebx = return values for sysfunc 70
17	iglobal	17	iglobal
Line 1442...	Line 1442...
1442	mov byte [edi], 0	1442	mov byte [edi], 0
1443	inc edi	1443	inc edi
1444	pop esi	1444	pop esi
1445	.get_inode:	1445	.get_inode:
1446	push ebx edx	1446	push ebx edx
1447	stdcall findInode, 0	1447	call findInode
1448	pop edx ebx	1448	pop edx ebx
1449	ret	1449	ret
Line 1450...	Line 1450...
1450		1450
1451	findInode:	1451	findInode:
1452	; in: [esi]+[[esp+4]] = name	1452	; in: esi -> path string
1453	; out:	1453	; out:
1454	; [ebp+EXTFS.mainInodeBuffer] = inode	1454	; [ebp+EXTFS.mainInodeBuffer] = inode
1455	; esi = inode number	1455	; esi = inode number
1456	; dl = first byte of file/folder name	1456	; dl = first byte of file/folder name
Line 1467...	Line 1467...
1467	rep movsb	1467	rep movsb
1468	pop ecx edi	1468	pop ecx edi
1469	xor eax, eax	1469	xor eax, eax
1470	xor dl, dl	1470	xor dl, dl
1471	mov esi, ROOT_INODE	1471	mov esi, ROOT_INODE
1472	ret 4	1472	ret
Line 1473...	Line 1473...
1473		1473
1474	.next_path_part:	1474	.next_path_part:
1475	push [edx+INODE.sectorsUsed]	1475	push [edx+INODE.sectorsUsed]
1476	xor ecx, ecx	1476	xor ecx, ecx
Line 1532...	Line 1532...
1532	pop edx edi ecx	1532	pop edx edi ecx
1533	; ebx -> matched directory entry, esi -> name without parent, or not changed	1533	; ebx -> matched directory entry, esi -> name without parent, or not changed
1534	cmp edi, esi	1534	cmp edi, esi
1535	je .next_folder_block	1535	je .next_folder_block
1536	cmp byte [esi], 0	1536	cmp byte [esi], 0
1537	jnz @f	-
1538	cmp dword[esp+8], 0	-
1539	je .get_inode_ret	1537	je .get_inode_ret
1540	mov esi, [esp+8]	-
1541	mov dword[esp+8], 0	-
1542	@@:	-
1543	mov eax, [ebx+DIRENTRY.inodeNumber]	1538	mov eax, [ebx+DIRENTRY.inodeNumber]
1544	lea ebx, [ebp+EXTFS.mainInodeBuffer]	1539	lea ebx, [ebp+EXTFS.mainInodeBuffer]
1545	call readInode	1540	call readInode
1546	jc .error_get_inode	1541	jc .error_get_inode
1547	movzx eax, [ebx+INODE.accessMode]	1542	movzx eax, [ebx+INODE.accessMode]
Line 1565...	Line 1560...
1565	mov dl, [ebx+DIRENTRY.name]	1560	mov dl, [ebx+DIRENTRY.name]
1566	mov eax, [ebx+DIRENTRY.inodeNumber]	1561	mov eax, [ebx+DIRENTRY.inodeNumber]
1567	lea ebx, [ebp+EXTFS.mainInodeBuffer]	1562	lea ebx, [ebp+EXTFS.mainInodeBuffer]
1568	mov esi, eax	1563	mov esi, eax
1569	call readInode	1564	call readInode
1570	ret 4	1565	ret
Line 1571...	Line 1566...
1571		1566
1572	.not_found:	1567	.not_found:
1573	movi eax, ERROR_FILE_NOT_FOUND	1568	movi eax, ERROR_FILE_NOT_FOUND
1574	stc	1569	stc
Line 1575...	Line 1570...
1575	ret 4	1570	ret
1576		1571
1577	.error_get_block:	1572	.error_get_block:
1578	pop ebx	1573	pop ebx
1579	.error_get_inode:	1574	.error_get_inode:
Line 1580...	Line 1575...
1580	pop ebx	1575	pop ebx
1581	ret 4	1576	ret
1582		1577
1583	writeSuperblock:	1578	writeSuperblock:
Line 1612...	Line 1607...
1612	ext_ReadFolder:	1607	ext_ReadFolder:
1613	call ext_lock	1608	call ext_lock
1614	cmp byte [esi], 0	1609	cmp byte [esi], 0
1615	jz .root_folder	1610	jz .root_folder
1616	push ebx	1611	push ebx
1617	stdcall findInode, [esp+4+4]	1612	call findInode
1618	pop ebx	1613	pop ebx
1619	jc .error_ret	1614	jc .error_ret
1620	lea esi, [ebp+EXTFS.mainInodeBuffer]	1615	lea esi, [ebp+EXTFS.mainInodeBuffer]
1621	test [esi+INODE.accessMode], DIRECTORY	1616	test [esi+INODE.accessMode], DIRECTORY
1622	jz .error_not_found	1617	jz .error_not_found
Line 1799...	Line 1794...
1799	call ext_lock	1794	call ext_lock
1800	push ERROR_ACCESS_DENIED	1795	push ERROR_ACCESS_DENIED
1801	cmp byte [esi], 0	1796	cmp byte [esi], 0
1802	jz .error ; root	1797	jz .error ; root
1803	mov [esp], ebx	1798	mov [esp], ebx
1804	stdcall findInode, [esp+4+4]	1799	call findInode
1805	pop ebx	1800	pop ebx
1806	jc .error_eax	1801	jc .error_eax
1807	push ERROR_ACCESS_DENIED	1802	push ERROR_ACCESS_DENIED
1808	lea esi, [ebp+EXTFS.mainInodeBuffer]	1803	lea esi, [ebp+EXTFS.mainInodeBuffer]
1809	mov ax, [esi+INODE.accessMode]	1804	mov ax, [esi+INODE.accessMode]
Line 1929...	Line 1924...
1929	call ext_lock	1924	call ext_lock
1930	mov edx, [ebx+16]	1925	mov edx, [ebx+16]
1931	cmp byte [esi], 0	1926	cmp byte [esi], 0
1932	jz .is_root	1927	jz .is_root
1933	push edx	1928	push edx
1934	stdcall findInode, [esp+4+4]	1929	call findInode
1935	mov ebx, edx	1930	mov ebx, edx
1936	pop edx	1931	pop edx
1937	lea esi, [ebp+EXTFS.mainInodeBuffer]	1932	lea esi, [ebp+EXTFS.mainInodeBuffer]
1938	jnc @f	1933	jnc @f
1939	push eax	1934	push eax
Line 1980...	Line 1975...
1980		1975
1981	;----------------------------------------------------------------	1976	;----------------------------------------------------------------
1982	ext_SetFileInfo:	1977	ext_SetFileInfo:
1983	call extfsWritingInit	1978	call extfsWritingInit
1984	pushd [ebx+16]	1979	pushd [ebx+16]
1985	stdcall findInode, [esp+4+4]	1980	call findInode
1986	pop edx	1981	pop edx
1987	jc @f	1982	jc @f
1988	push esi ; inode number	1983	push esi ; inode number
1989	lea esi, [edx+16]	1984	lea esi, [edx+16]
Line 2012...	Line 2007...
2012		2007
2013	;----------------------------------------------------------------	2008	;----------------------------------------------------------------
2014	ext_Delete:	2009	ext_Delete:
2015	call extfsWritingInit	2010	call extfsWritingInit
2016	push esi	2011	push esi
2017	stdcall findInode, [esp+4+4]	2012	call findInode
2018	mov ebx, esi	2013	mov ebx, esi
2019	pop esi	2014	pop esi
2020	push eax	2015	push eax
2021	jc .ret	2016	jc .ret
Line 2214...	Line 2209...
2214		2209
2215	;----------------------------------------------------------------	2210	;----------------------------------------------------------------
2216	ext_CreateFolder:	2211	ext_CreateFolder:
2217	call extfsWritingInit	2212	call extfsWritingInit
2218	push esi	2213	push esi
2219	stdcall findInode, [esp+4+4]	2214	call findInode
2220	pop esi	2215	pop esi
2221	jnc .success ; exist	2216	jnc .success ; exist
2222	call findInode_parent	2217	call findInode_parent
2223	jc .error	2218	jc .error
Line 2298...	Line 2293...
2298		2293
2299	;----------------------------------------------------------------	2294	;----------------------------------------------------------------
2300	ext_CreateFile:	2295	ext_CreateFile:
2301	call extfsWritingInit	2296	call extfsWritingInit
2302	push ebx esi	2297	push ebx esi
2303	stdcall findInode, [esp+8+4]	2298	call findInode
2304	mov esi, [esp]	2299	mov esi, [esp]
2305	jc @f	2300	jc @f
2306	call ext_unlock	2301	call ext_unlock
2307	stdcall ext_Delete, [esp+8+4]	2302	call ext_Delete
2308	mov [esp], eax	2303	push eax
2309	call ext_lock	2304	call ext_lock
2310	pop eax	2305	pop eax
2311	test eax, eax	2306	test eax, eax
2312	jnz .error	2307	jnz .error
Line 2357...	Line 2352...
2357		2352
2358	;----------------------------------------------------------------	2353	;----------------------------------------------------------------
2359	ext_WriteFile:	2354	ext_WriteFile:
2360	call extfsWritingInit	2355	call extfsWritingInit
2361	push 0 ebx	2356	push 0 ebx
2362	stdcall findInode, [esp+8+4]	2357	call findInode
2363	jc .error	2358	jc .error
2364	lea edx, [ebp+EXTFS.mainInodeBuffer]	2359	lea edx, [ebp+EXTFS.mainInodeBuffer]
2365	movi eax, ERROR_ACCESS_DENIED	2360	movi eax, ERROR_ACCESS_DENIED
2366	test [edx+INODE.accessMode], FLAG_FILE	2361	test [edx+INODE.accessMode], FLAG_FILE
Line 2480...	Line 2475...
2480		2475
2481	;----------------------------------------------------------------	2476	;----------------------------------------------------------------
2482	ext_SetFileEnd:	2477	ext_SetFileEnd:
2483	call extfsWritingInit	2478	call extfsWritingInit
2484	pushd [ebx+4]	2479	pushd [ebx+4]
2485	stdcall findInode, [esp+4+4]	2480	call findInode
2486	pop ecx	2481	pop ecx
2487	jc @f	2482	jc @f
2488	lea edx, [ebp+EXTFS.mainInodeBuffer]	2483	lea edx, [ebp+EXTFS.mainInodeBuffer]
2489	movi eax, ERROR_ACCESS_DENIED	2484	movi eax, ERROR_ACCESS_DENIED

Subversion Repositories Kolibri OS

(root)/kernel/trunk/fs/ext.inc – Rev 6462 → 6468