WebSVN – Kolibri OS – Diff – /kernel/trunk/fs/fat12.inc



    cmp    [FDC_Status],0
    jne    fdc_status_error_1
    mov    edi,edx
    dec    ebx
    shl    ebx,9
    mov    esi,FLOPPY_BUFF
    add    esi,ebx
    shl    ecx,9
    cld
    rep    movsb
    mov    eax,0 ; ok read

l.20_1:
    call    ReadSectWithRetr
    cmp    [FDC_Status],0
    jne    fdc_status_error_3_1
    mov     dl,16
    mov     edi,FDD_BUFF
    inc     [FDD_Sector]
l.21_1:
    mov    esi,eax            ;Name of file we want
    mov    ecx,11
    cld

    cmp   [root_read],1
    je    unnecessary_root_read
    mov    [FDD_Track],0      ; Öèëèíäð
    mov    [FDD_Head],1      ; Ñòîðîíà
    mov    [FDD_Sector],2      ; Ñåêòîð
    mov    edi,FLOPPY_BUFF
    call   SeekTrack
read_flp_root_1:
    call   ReadSectWithRetr
    cmp    [FDC_Status],0
    jne    unnecessary_root_read

    cmp   [flp_fat],1
    je    unnecessary_flp_fat
    mov    [FDD_Track],0      ; Öèëèíäð
    mov    [FDD_Head],0      ; Ñòîðîíà
    mov    [FDD_Sector],2      ; Ñåêòîð
    mov    edi,FLOPPY_BUFF
    call   SeekTrack
read_flp_fat_1:
    call   ReadSectWithRetr
    cmp    [FDC_Status],0
    jne    unnecessary_flp_fat

    ret

 
calculatefatchain_flp:

   pushad
 

   mov  esi,FLOPPY_BUFF
   mov  edi,0x282000
 

    jne    fdc_status_error
    call   ReadSectWithRetr
    cmp    [FDC_Status],0
    jne    fdc_status_error
    mov    esi,flp_label
    mov    edi,FDD_BUFF+39
    mov    ecx,15
    cld
    rep    cmpsb
    je     same_label
    mov    [root_read],0
    mov    [flp_fat],0
same_label:
    mov    esi,FDD_BUFF+39
    mov    edi,flp_label
    mov    ecx,15
    cld
    rep    movsb
    popad

    cmp   [root_read],0
    je    unnecessary_root_save
    mov    [FDD_Track],0      ; Öèëèíäð
    mov    [FDD_Head],1      ; Ñòîðîíà
    mov    [FDD_Sector],2      ; Ñåêòîð
    mov    esi,FLOPPY_BUFF
    call   SeekTrack
save_flp_root_1:
    push   esi
    call   take_data_from_application_1
    pop    esi

    je    unnecessary_flp_fat_save
    call   restorefatchain_flp
    mov    [FDD_Track],0      ; Öèëèíäð
    mov    [FDD_Head],0      ; Ñòîðîíà
    mov    [FDD_Sector],2      ; Ñåêòîð
    mov    esi,FLOPPY_BUFF
    call   SeekTrack
save_flp_fat_1:
    push   esi
    call   take_data_from_application_1
    pop    esi

 
restorefatchain_flp:   ; restore fat chain

   pushad
 

   mov  esi,0x282000
   mov  edi,FLOPPY_BUFF
 
  fcnew2_1:

   add  edi,4
   mov word [edi],bx
   add  edi,2
   add  esi,8

 
   cmp  edi,FLOPPY_BUFF+0x1200     ;4274 bytes - all used FAT

   jb   fcnew2_1
 
   mov  esi,FLOPPY_BUFF           ; duplicate fat chain
   mov  edi,FLOPPY_BUFF+0x1200
   mov  ecx,0x1200/4

   cld

l.20_2:
    call    ReadSectWithRetr
    cmp    [FDC_Status],0
    jne    fdc_status_error_4
    mov     dl,16
    mov     edi,FDD_BUFF
    inc     [FDD_Sector]
l.21_2:
    mov    esi,eax            ;Name of file we want
    mov    ecx,11
    cld

    pop    eax
    mov    [save_root_flag],1
    call   read_flp_root
    cmp    [FDC_Status],0
    jne    fdc_status_error_7
    mov    edi,FLOPPY_BUFF   ;Point at directory
    mov    edx,224 +1
    ; find an empty spot for filename in the root dir
l20ds_1:
    sub    edx,1
    jz     frnoreadds_1

l.20_3:
    call    ReadSectWithRetr
    cmp    [FDC_Status],0
    jne    fdc_status_error_7
    mov    dl,16
    mov    edi,FDD_BUFF
    inc     [FDD_Sector]
l.21_3:
    mov    esi,eax            ;Name of file we want
    mov    ecx,11
    cld

   popa
   cmp    [FDC_Status],0
   jne    not_found_file_analyze_flp

 
   mov ecx,512/32

   mov ebx,FDD_BUFF
 
adr1_analyze_flp:
   mov esi,edx   ;[esp+16]

   popa
   cmp    [FDC_Status],0
   jne    error_found_file_analyze1

 
   mov ecx,512/32

   mov ebx,FDD_BUFF
 
adr1_analyze1:
   cmp byte [ebx],0x00

   mov    [eax],di

 
   pusha
   mov ecx,512/4
   xor eax,eax
   mov edi,FDD_BUFF
   cld
   rep stosd

   popa

   pusha
   call   save_chs_sector
   popa
   cmp    [FDC_Status],0
   jne    error_found_file_analyze1
   mov    ebx,FDD_BUFF

 

found_file_analyze1:
 

        add     eax, 19
        call    read_chs_sector
        popa
        cmp     [FDC_Status], 0
        jnz     .readerr
        mov     edi, FDD_BUFF
        ret     ; CF=0
.readerr:
        stc
        ret

 
flp_rootmem_first:
        mov     edi, FLOPPY_BUFF
        clc
        ret
flp_rootmem_next:
        add     edi, 0x20
        cmp     edi, FLOPPY_BUFF+14*0x200
        cmc
flp_rootmem_next_write:
flp_rootmem_begin_write:
flp_rootmem_end_write:

        jae     .err
        pusha
        add     eax, 31
        call    read_chs_sector
        popa
        mov     edi, FDD_BUFF
        cmp     [FDC_Status], 0
        jnz     .err
        ret     ; CF=0
.err2:
        pop     ecx

        mov     eax, [esp+28]
        mov     ecx, [eax]
        mov     [0x282000+ecx*2], di
        mov     [eax], edi
        xor     eax, eax
        mov     edi, FDD_BUFF
        mov     ecx, 128
        rep     stosd
        popa
        call    flp_notroot_end_write
        mov     edi, FDD_BUFF
        clc
        ret
.notfound:
        popa
        stc

        pusha
        call    read_chs_sector
        popa
        cmp     [FDC_Status], 0
        jnz     .err
        lea     eax, [FDD_BUFF+ebx+512]
        neg     ebx
        push    ecx
        cmp     ecx, ebx
        jbe     @f
        mov     ecx, ebx

        pusha
        call    read_chs_sector
        popa
        cmp     [FDC_Status], 0
        jnz     .error
        mov     edi, FDD_BUFF
        push    eax
.l1:
        call    fat_get_name
        jc      .l2
        cmp     byte [edi+11], 0xF

        pusha
        call    read_chs_sector
        popa
        cmp     [FDC_Status], 0
        jnz     .error
        mov     edi, FDD_BUFF
        push    eax
.do_bdfe:
        inc     dword [edx+8]   ; new file found
        dec     ebx
        jns     .l2

        mov     ecx, 512
        cmp     dword [esp+20], ecx
        jae     @f
        mov     ecx, [esp+20]
@@:
        mov     edi, FDD_BUFF
        cmp     byte [esp+24+28+28], 0
        jnz     .writedir
        push    ecx
        rep     movsb
        pop     ecx

        push    eax ecx edi
        xor     eax, eax
        mov     ecx, 0x200
        sub     ecx, [esp+4+12]
        jbe     @f
        mov     edi, FDD_BUFF
        add     edi, [esp+4+12]
        rep     stosb
@@:
; zero uninitialized data in the last sector
        mov     ecx, 0x200
        sub     ecx, esi
        jbe     @f
        mov     edi, FDD_BUFF
        add     edi, esi
        rep     stosb
@@:
        pop     edi ecx eax
; copy new data
        push    eax
        mov     eax, edx
        neg     ebx
        jecxz   @f
        add     ebx, FDD_BUFF+0x200
        call    memmove
        xor     ebx, ebx
@@:
        pop     eax
; save sector

        jnz     .err_next
.noread:
        mov     ecx, [esp+4]
        neg     ecx
        push    edi
        mov     edi, FDD_BUFF+0x200
        add     edi, [esp+8]
        xor     eax, eax
        mov     [esp+8], eax
        rep     stosb
        pop     edi

        jz      .truncate_done
        call    SetUserInterrupts
        pusha
        call    read_chs_sector
        popa
        add     edi, FDD_BUFF
        mov     ecx, FDD_BUFF+0x200
        sub     ecx, edi
        push    eax
        xor     eax, eax
        rep     stosb
        pop     eax

        add     eax, 31
        call    read_chs_sector
        cmp     [FDC_Status], 0
        jnz     .err
        pop     edi
        mov     esi, FDD_BUFF
        push    edi
        mov     ecx, 512/4
        rep     movsd
        mov     eax, [esp+28]
        mov     ecx, [eax]

        push    ebx
        pusha
        add     eax, 31
        call    read_chs_sector
        popa
        mov     ebx, FDD_BUFF + 2*0x20
.checkempty:
        cmp     byte [ebx], 0
        jz      .empty
        cmp     byte [ebx], 0xE5
        jnz     .notempty
        add     ebx, 0x20
        cmp     ebx, FDD_BUFF + 0x200
        jb      .checkempty
        movzx   eax, word [FLOPPY_FAT + eax*2]
        pusha
        add     eax, 31
        call    read_chs_sector
        popa
        mov     ebx, FDD_BUFF
        jmp     .checkempty
.notempty:
        pop     ebx
        pop     eax
.access_denied2:

        xchg    eax, [esp]
; delete folder entry
        mov     byte [edi], 0xE5
; delete LFN (if present)
.lfndel:
        cmp     edi, FDD_BUFF
        ja      @f
        cmp     [fd_prev_sector], 0
        jz      .lfndone
        push    [fd_prev_sector]
        push    [fd_prev_prev_sector]

        popa
        pop     eax
        pusha
        call    read_chs_sector
        popa
        mov     edi, FDD_BUFF+0x200
@@:
        sub     edi, 0x20
        cmp     byte [edi], 0xE5
        jz      .lfndone
        cmp     byte [edi+11], 0xF

Rev 379	Rev 380
Line 102...	Line 102...
102	cmp [FDC_Status],0	102	cmp [FDC_Status],0
103	jne fdc_status_error_1	103	jne fdc_status_error_1
104	mov edi,edx	104	mov edi,edx
105	dec ebx	105	dec ebx
106	shl ebx,9	106	shl ebx,9
107	mov esi,0x8000	107	mov esi,FLOPPY_BUFF
108	add esi,ebx	108	add esi,ebx
109	shl ecx,9	109	shl ecx,9
110	cld	110	cld
111	rep movsb	111	rep movsb
112	mov eax,0 ; ok read	112	mov eax,0 ; ok read
Line 145...	Line 145...
145	l.20_1:	145	l.20_1:
146	call ReadSectWithRetr	146	call ReadSectWithRetr
147	cmp [FDC_Status],0	147	cmp [FDC_Status],0
148	jne fdc_status_error_3_1	148	jne fdc_status_error_3_1
149	mov dl,16	149	mov dl,16
150	mov edi,0xD000	150	mov edi,FDD_BUFF
151	inc [FDD_Sector]	151	inc [FDD_Sector]
152	l.21_1:	152	l.21_1:
153	mov esi,eax ;Name of file we want	153	mov esi,eax ;Name of file we want
154	mov ecx,11	154	mov ecx,11
155	cld	155	cld
Line 272...	Line 272...
272	cmp [root_read],1	272	cmp [root_read],1
273	je unnecessary_root_read	273	je unnecessary_root_read
274	mov [FDD_Track],0 ; Öèëèíäð	274	mov [FDD_Track],0 ; Öèëèíäð
275	mov [FDD_Head],1 ; Ñòîðîíà	275	mov [FDD_Head],1 ; Ñòîðîíà
276	mov [FDD_Sector],2 ; Ñåêòîð	276	mov [FDD_Sector],2 ; Ñåêòîð
277	mov edi,0x8000	277	mov edi,FLOPPY_BUFF
278	call SeekTrack	278	call SeekTrack
279	read_flp_root_1:	279	read_flp_root_1:
280	call ReadSectWithRetr	280	call ReadSectWithRetr
281	cmp [FDC_Status],0	281	cmp [FDC_Status],0
282	jne unnecessary_root_read	282	jne unnecessary_root_read
Line 301...	Line 301...
301	cmp [flp_fat],1	301	cmp [flp_fat],1
302	je unnecessary_flp_fat	302	je unnecessary_flp_fat
303	mov [FDD_Track],0 ; Öèëèíäð	303	mov [FDD_Track],0 ; Öèëèíäð
304	mov [FDD_Head],0 ; Ñòîðîíà	304	mov [FDD_Head],0 ; Ñòîðîíà
305	mov [FDD_Sector],2 ; Ñåêòîð	305	mov [FDD_Sector],2 ; Ñåêòîð
306	mov edi,0x8000	306	mov edi,FLOPPY_BUFF
307	call SeekTrack	307	call SeekTrack
308	read_flp_fat_1:	308	read_flp_fat_1:
309	call ReadSectWithRetr	309	call ReadSectWithRetr
310	cmp [FDC_Status],0	310	cmp [FDC_Status],0
311	jne unnecessary_flp_fat	311	jne unnecessary_flp_fat
Line 330...	Line 330...
330	ret	330	ret
Line 331...	Line 331...
331		331
332	calculatefatchain_flp:	332	calculatefatchain_flp:
Line 333...	Line 333...
333	pushad	333	pushad
334		334
Line 335...	Line 335...
335	mov esi,0x8000	335	mov esi,FLOPPY_BUFF
336	mov edi,0x282000	336	mov edi,0x282000
337		337
Line 382...	Line 382...
382	jne fdc_status_error	382	jne fdc_status_error
383	call ReadSectWithRetr	383	call ReadSectWithRetr
384	cmp [FDC_Status],0	384	cmp [FDC_Status],0
385	jne fdc_status_error	385	jne fdc_status_error
386	mov esi,flp_label	386	mov esi,flp_label
387	mov edi,0xD000+39	387	mov edi,FDD_BUFF+39
388	mov ecx,15	388	mov ecx,15
389	cld	389	cld
390	rep cmpsb	390	rep cmpsb
391	je same_label	391	je same_label
392	mov [root_read],0	392	mov [root_read],0
393	mov [flp_fat],0	393	mov [flp_fat],0
394	same_label:	394	same_label:
395	mov esi,0xD000+39	395	mov esi,FDD_BUFF+39
396	mov edi,flp_label	396	mov edi,flp_label
397	mov ecx,15	397	mov ecx,15
398	cld	398	cld
399	rep movsb	399	rep movsb
400	popad	400	popad
Line 411...	Line 411...
411	cmp [root_read],0	411	cmp [root_read],0
412	je unnecessary_root_save	412	je unnecessary_root_save
413	mov [FDD_Track],0 ; Öèëèíäð	413	mov [FDD_Track],0 ; Öèëèíäð
414	mov [FDD_Head],1 ; Ñòîðîíà	414	mov [FDD_Head],1 ; Ñòîðîíà
415	mov [FDD_Sector],2 ; Ñåêòîð	415	mov [FDD_Sector],2 ; Ñåêòîð
416	mov esi,0x8000	416	mov esi,FLOPPY_BUFF
417	call SeekTrack	417	call SeekTrack
418	save_flp_root_1:	418	save_flp_root_1:
419	push esi	419	push esi
420	call take_data_from_application_1	420	call take_data_from_application_1
421	pop esi	421	pop esi
Line 440...	Line 440...
440	je unnecessary_flp_fat_save	440	je unnecessary_flp_fat_save
441	call restorefatchain_flp	441	call restorefatchain_flp
442	mov [FDD_Track],0 ; Öèëèíäð	442	mov [FDD_Track],0 ; Öèëèíäð
443	mov [FDD_Head],0 ; Ñòîðîíà	443	mov [FDD_Head],0 ; Ñòîðîíà
444	mov [FDD_Sector],2 ; Ñåêòîð	444	mov [FDD_Sector],2 ; Ñåêòîð
445	mov esi,0x8000	445	mov esi,FLOPPY_BUFF
446	call SeekTrack	446	call SeekTrack
447	save_flp_fat_1:	447	save_flp_fat_1:
448	push esi	448	push esi
449	call take_data_from_application_1	449	call take_data_from_application_1
450	pop esi	450	pop esi
Line 470...	Line 470...
470		470
471	restorefatchain_flp: ; restore fat chain	471	restorefatchain_flp: ; restore fat chain
Line 472...	Line 472...
472	pushad	472	pushad
473		473
Line 474...	Line 474...
474	mov esi,0x282000	474	mov esi,0x282000
475	mov edi,0x8000	475	mov edi,FLOPPY_BUFF
476		476
477	fcnew2_1:	477	fcnew2_1:
Line 487...	Line 487...
487	add edi,4	487	add edi,4
488	mov word [edi],bx	488	mov word [edi],bx
489	add edi,2	489	add edi,2
490	add esi,8	490	add esi,8
Line 491...	Line 491...
491		491
492	cmp edi,0x8000+0x1200 ;4274 bytes - all used FAT	492	cmp edi,FLOPPY_BUFF+0x1200 ;4274 bytes - all used FAT
Line 493...	Line 493...
493	jb fcnew2_1	493	jb fcnew2_1
494		494
495	mov esi,0x8000 ; duplicate fat chain	495	mov esi,FLOPPY_BUFF ; duplicate fat chain
496	mov edi,0x8000+0x1200	496	mov edi,FLOPPY_BUFF+0x1200
497	mov ecx,0x1200/4	497	mov ecx,0x1200/4
Line 498...	Line 498...
498	cld	498	cld
Line 532...	Line 532...
532	l.20_2:	532	l.20_2:
533	call ReadSectWithRetr	533	call ReadSectWithRetr
534	cmp [FDC_Status],0	534	cmp [FDC_Status],0
535	jne fdc_status_error_4	535	jne fdc_status_error_4
536	mov dl,16	536	mov dl,16
537	mov edi,0xD000	537	mov edi,FDD_BUFF
538	inc [FDD_Sector]	538	inc [FDD_Sector]
539	l.21_2:	539	l.21_2:
540	mov esi,eax ;Name of file we want	540	mov esi,eax ;Name of file we want
541	mov ecx,11	541	mov ecx,11
542	cld	542	cld
Line 660...	Line 660...
660	pop eax	660	pop eax
661	mov [save_root_flag],1	661	mov [save_root_flag],1
662	call read_flp_root	662	call read_flp_root
663	cmp [FDC_Status],0	663	cmp [FDC_Status],0
664	jne fdc_status_error_7	664	jne fdc_status_error_7
665	mov edi,0x8000 ;Point at directory	665	mov edi,FLOPPY_BUFF ;Point at directory
666	mov edx,224 +1	666	mov edx,224 +1
667	; find an empty spot for filename in the root dir	667	; find an empty spot for filename in the root dir
668	l20ds_1:	668	l20ds_1:
669	sub edx,1	669	sub edx,1
670	jz frnoreadds_1	670	jz frnoreadds_1
Line 687...	Line 687...
687	l.20_3:	687	l.20_3:
688	call ReadSectWithRetr	688	call ReadSectWithRetr
689	cmp [FDC_Status],0	689	cmp [FDC_Status],0
690	jne fdc_status_error_7	690	jne fdc_status_error_7
691	mov dl,16	691	mov dl,16
692	mov edi,0xD000	692	mov edi,FDD_BUFF
693	inc [FDD_Sector]	693	inc [FDD_Sector]
694	l.21_3:	694	l.21_3:
695	mov esi,eax ;Name of file we want	695	mov esi,eax ;Name of file we want
696	mov ecx,11	696	mov ecx,11
697	cld	697	cld
Line 918...	Line 918...
918	popa	918	popa
919	cmp [FDC_Status],0	919	cmp [FDC_Status],0
920	jne not_found_file_analyze_flp	920	jne not_found_file_analyze_flp
Line 921...	Line 921...
921		921
922	mov ecx,512/32	922	mov ecx,512/32
Line 923...	Line 923...
923	mov ebx,0xD000	923	mov ebx,FDD_BUFF
924		924
925	adr1_analyze_flp:	925	adr1_analyze_flp:
926	mov esi,edx ;[esp+16]	926	mov esi,edx ;[esp+16]
Line 983...	Line 983...
983	popa	983	popa
984	cmp [FDC_Status],0	984	cmp [FDC_Status],0
985	jne error_found_file_analyze1	985	jne error_found_file_analyze1
Line 986...	Line 986...
986		986
987	mov ecx,512/32	987	mov ecx,512/32
Line 988...	Line 988...
988	mov ebx,0xD000	988	mov ebx,FDD_BUFF
989		989
990	adr1_analyze1:	990	adr1_analyze1:
991	cmp byte [ebx],0x00	991	cmp byte [ebx],0x00
Line 1018...	Line 1018...
1018	mov [eax],di	1018	mov [eax],di
Line 1019...	Line 1019...
1019		1019
1020	pusha	1020	pusha
1021	mov ecx,512/4	1021	mov ecx,512/4
1022	xor eax,eax	1022	xor eax,eax
1023	mov edi,0xD000	1023	mov edi,FDD_BUFF
1024	cld	1024	cld
1025	rep stosd	1025	rep stosd
Line 1026...	Line 1026...
1026	popa	1026	popa
Line 1030...	Line 1030...
1030	pusha	1030	pusha
1031	call save_chs_sector	1031	call save_chs_sector
1032	popa	1032	popa
1033	cmp [FDC_Status],0	1033	cmp [FDC_Status],0
1034	jne error_found_file_analyze1	1034	jne error_found_file_analyze1
1035	mov ebx,0xD000	1035	mov ebx,FDD_BUFF
Line 1036...	Line 1036...
1036		1036
Line 1037...	Line 1037...
1037	found_file_analyze1:	1037	found_file_analyze1:
1038		1038
Line 1143...	Line 1143...
1143	add eax, 19	1143	add eax, 19
1144	call read_chs_sector	1144	call read_chs_sector
1145	popa	1145	popa
1146	cmp [FDC_Status], 0	1146	cmp [FDC_Status], 0
1147	jnz .readerr	1147	jnz .readerr
1148	mov edi, 0xD000	1148	mov edi, FDD_BUFF
1149	ret ; CF=0	1149	ret ; CF=0
1150	.readerr:	1150	.readerr:
1151	stc	1151	stc
1152	ret	1152	ret
Line 1153...	Line 1153...
1153		1153
1154	flp_rootmem_first:	1154	flp_rootmem_first:
1155	mov edi, 0x8000	1155	mov edi, FLOPPY_BUFF
1156	clc	1156	clc
1157	ret	1157	ret
1158	flp_rootmem_next:	1158	flp_rootmem_next:
1159	add edi, 0x20	1159	add edi, 0x20
1160	cmp edi, 0x8000+14*0x200	1160	cmp edi, FLOPPY_BUFF+14*0x200
1161	cmc	1161	cmc
1162	flp_rootmem_next_write:	1162	flp_rootmem_next_write:
1163	flp_rootmem_begin_write:	1163	flp_rootmem_begin_write:
1164	flp_rootmem_end_write:	1164	flp_rootmem_end_write:
Line 1193...	Line 1193...
1193	jae .err	1193	jae .err
1194	pusha	1194	pusha
1195	add eax, 31	1195	add eax, 31
1196	call read_chs_sector	1196	call read_chs_sector
1197	popa	1197	popa
1198	mov edi, 0xD000	1198	mov edi, FDD_BUFF
1199	cmp [FDC_Status], 0	1199	cmp [FDC_Status], 0
1200	jnz .err	1200	jnz .err
1201	ret ; CF=0	1201	ret ; CF=0
1202	.err2:	1202	.err2:
1203	pop ecx	1203	pop ecx
Line 1240...	Line 1240...
1240	mov eax, [esp+28]	1240	mov eax, [esp+28]
1241	mov ecx, [eax]	1241	mov ecx, [eax]
1242	mov [0x282000+ecx*2], di	1242	mov [0x282000+ecx*2], di
1243	mov [eax], edi	1243	mov [eax], edi
1244	xor eax, eax	1244	xor eax, eax
1245	mov edi, 0xD000	1245	mov edi, FDD_BUFF
1246	mov ecx, 128	1246	mov ecx, 128
1247	rep stosd	1247	rep stosd
1248	popa	1248	popa
1249	call flp_notroot_end_write	1249	call flp_notroot_end_write
1250	mov edi, 0xD000	1250	mov edi, FDD_BUFF
1251	clc	1251	clc
1252	ret	1252	ret
1253	.notfound:	1253	.notfound:
1254	popa	1254	popa
1255	stc	1255	stc
Line 1356...	Line 1356...
1356	pusha	1356	pusha
1357	call read_chs_sector	1357	call read_chs_sector
1358	popa	1358	popa
1359	cmp [FDC_Status], 0	1359	cmp [FDC_Status], 0
1360	jnz .err	1360	jnz .err
1361	lea eax, [0xD000+ebx+512]	1361	lea eax, [FDD_BUFF+ebx+512]
1362	neg ebx	1362	neg ebx
1363	push ecx	1363	push ecx
1364	cmp ecx, ebx	1364	cmp ecx, ebx
1365	jbe @f	1365	jbe @f
1366	mov ecx, ebx	1366	mov ecx, ebx
Line 1450...	Line 1450...
1450	pusha	1450	pusha
1451	call read_chs_sector	1451	call read_chs_sector
1452	popa	1452	popa
1453	cmp [FDC_Status], 0	1453	cmp [FDC_Status], 0
1454	jnz .error	1454	jnz .error
1455	mov edi, 0xD000	1455	mov edi, FDD_BUFF
1456	push eax	1456	push eax
1457	.l1:	1457	.l1:
1458	call fat_get_name	1458	call fat_get_name
1459	jc .l2	1459	jc .l2
1460	cmp byte [edi+11], 0xF	1460	cmp byte [edi+11], 0xF
Line 1478...	Line 1478...
1478	pusha	1478	pusha
1479	call read_chs_sector	1479	call read_chs_sector
1480	popa	1480	popa
1481	cmp [FDC_Status], 0	1481	cmp [FDC_Status], 0
1482	jnz .error	1482	jnz .error
1483	mov edi, 0xD000	1483	mov edi, FDD_BUFF
1484	push eax	1484	push eax
1485	.do_bdfe:	1485	.do_bdfe:
1486	inc dword [edx+8] ; new file found	1486	inc dword [edx+8] ; new file found
1487	dec ebx	1487	dec ebx
1488	jns .l2	1488	jns .l2
Line 1909...	Line 1909...
1909	mov ecx, 512	1909	mov ecx, 512
1910	cmp dword [esp+20], ecx	1910	cmp dword [esp+20], ecx
1911	jae @f	1911	jae @f
1912	mov ecx, [esp+20]	1912	mov ecx, [esp+20]
1913	@@:	1913	@@:
1914	mov edi, 0xD000	1914	mov edi, FDD_BUFF
1915	cmp byte [esp+24+28+28], 0	1915	cmp byte [esp+24+28+28], 0
1916	jnz .writedir	1916	jnz .writedir
1917	push ecx	1917	push ecx
1918	rep movsb	1918	rep movsb
1919	pop ecx	1919	pop ecx
Line 2158...	Line 2158...
2158	push eax ecx edi	2158	push eax ecx edi
2159	xor eax, eax	2159	xor eax, eax
2160	mov ecx, 0x200	2160	mov ecx, 0x200
2161	sub ecx, [esp+4+12]	2161	sub ecx, [esp+4+12]
2162	jbe @f	2162	jbe @f
2163	mov edi, 0xD000	2163	mov edi, FDD_BUFF
2164	add edi, [esp+4+12]	2164	add edi, [esp+4+12]
2165	rep stosb	2165	rep stosb
2166	@@:	2166	@@:
2167	; zero uninitialized data in the last sector	2167	; zero uninitialized data in the last sector
2168	mov ecx, 0x200	2168	mov ecx, 0x200
2169	sub ecx, esi	2169	sub ecx, esi
2170	jbe @f	2170	jbe @f
2171	mov edi, 0xD000	2171	mov edi, FDD_BUFF
2172	add edi, esi	2172	add edi, esi
2173	rep stosb	2173	rep stosb
2174	@@:	2174	@@:
2175	pop edi ecx eax	2175	pop edi ecx eax
2176	; copy new data	2176	; copy new data
2177	push eax	2177	push eax
2178	mov eax, edx	2178	mov eax, edx
2179	neg ebx	2179	neg ebx
2180	jecxz @f	2180	jecxz @f
2181	add ebx, 0xD000+0x200	2181	add ebx, FDD_BUFF+0x200
2182	call memmove	2182	call memmove
2183	xor ebx, ebx	2183	xor ebx, ebx
2184	@@:	2184	@@:
2185	pop eax	2185	pop eax
2186	; save sector	2186	; save sector
Line 2410...	Line 2410...
2410	jnz .err_next	2410	jnz .err_next
2411	.noread:	2411	.noread:
2412	mov ecx, [esp+4]	2412	mov ecx, [esp+4]
2413	neg ecx	2413	neg ecx
2414	push edi	2414	push edi
2415	mov edi, 0xD000+0x200	2415	mov edi, FDD_BUFF+0x200
2416	add edi, [esp+8]	2416	add edi, [esp+8]
2417	xor eax, eax	2417	xor eax, eax
2418	mov [esp+8], eax	2418	mov [esp+8], eax
2419	rep stosb	2419	rep stosb
2420	pop edi	2420	pop edi
Line 2489...	Line 2489...
2489	jz .truncate_done	2489	jz .truncate_done
2490	call SetUserInterrupts	2490	call SetUserInterrupts
2491	pusha	2491	pusha
2492	call read_chs_sector	2492	call read_chs_sector
2493	popa	2493	popa
2494	add edi, 0xD000	2494	add edi, FDD_BUFF
2495	mov ecx, 0xD000+0x200	2495	mov ecx, FDD_BUFF+0x200
2496	sub ecx, edi	2496	sub ecx, edi
2497	push eax	2497	push eax
2498	xor eax, eax	2498	xor eax, eax
2499	rep stosb	2499	rep stosb
2500	pop eax	2500	pop eax
Line 2623...	Line 2623...
2623	add eax, 31	2623	add eax, 31
2624	call read_chs_sector	2624	call read_chs_sector
2625	cmp [FDC_Status], 0	2625	cmp [FDC_Status], 0
2626	jnz .err	2626	jnz .err
2627	pop edi	2627	pop edi
2628	mov esi, 0xD000	2628	mov esi, FDD_BUFF
2629	push edi	2629	push edi
2630	mov ecx, 512/4	2630	mov ecx, 512/4
2631	rep movsd	2631	rep movsd
2632	mov eax, [esp+28]	2632	mov eax, [esp+28]
2633	mov ecx, [eax]	2633	mov ecx, [eax]
Line 2703...	Line 2703...
2703	push ebx	2703	push ebx
2704	pusha	2704	pusha
2705	add eax, 31	2705	add eax, 31
2706	call read_chs_sector	2706	call read_chs_sector
2707	popa	2707	popa
2708	mov ebx, FDD_DATA + 2*0x20	2708	mov ebx, FDD_BUFF + 2*0x20
2709	.checkempty:	2709	.checkempty:
2710	cmp byte [ebx], 0	2710	cmp byte [ebx], 0
2711	jz .empty	2711	jz .empty
2712	cmp byte [ebx], 0xE5	2712	cmp byte [ebx], 0xE5
2713	jnz .notempty	2713	jnz .notempty
2714	add ebx, 0x20	2714	add ebx, 0x20
2715	cmp ebx, FDD_DATA + 0x200	2715	cmp ebx, FDD_BUFF + 0x200
2716	jb .checkempty	2716	jb .checkempty
2717	movzx eax, word [FLOPPY_FAT + eax*2]	2717	movzx eax, word [FLOPPY_FAT + eax*2]
2718	pusha	2718	pusha
2719	add eax, 31	2719	add eax, 31
2720	call read_chs_sector	2720	call read_chs_sector
2721	popa	2721	popa
2722	mov ebx, FDD_DATA	2722	mov ebx, FDD_BUFF
2723	jmp .checkempty	2723	jmp .checkempty
2724	.notempty:	2724	.notempty:
2725	pop ebx	2725	pop ebx
2726	pop eax	2726	pop eax
2727	.access_denied2:	2727	.access_denied2:
Line 2739...	Line 2739...
2739	xchg eax, [esp]	2739	xchg eax, [esp]
2740	; delete folder entry	2740	; delete folder entry
2741	mov byte [edi], 0xE5	2741	mov byte [edi], 0xE5
2742	; delete LFN (if present)	2742	; delete LFN (if present)
2743	.lfndel:	2743	.lfndel:
2744	cmp edi, FDD_DATA	2744	cmp edi, FDD_BUFF
2745	ja @f	2745	ja @f
2746	cmp [fd_prev_sector], 0	2746	cmp [fd_prev_sector], 0
2747	jz .lfndone	2747	jz .lfndone
2748	push [fd_prev_sector]	2748	push [fd_prev_sector]
2749	push [fd_prev_prev_sector]	2749	push [fd_prev_prev_sector]
Line 2754...	Line 2754...
2754	popa	2754	popa
2755	pop eax	2755	pop eax
2756	pusha	2756	pusha
2757	call read_chs_sector	2757	call read_chs_sector
2758	popa	2758	popa
2759	mov edi, FDD_DATA+0x200	2759	mov edi, FDD_BUFF+0x200
2760	@@:	2760	@@:
2761	sub edi, 0x20	2761	sub edi, 0x20
2762	cmp byte [edi], 0xE5	2762	cmp byte [edi], 0xE5
2763	jz .lfndone	2763	jz .lfndone
2764	cmp byte [edi+11], 0xF	2764	cmp byte [edi+11], 0xF

Subversion Repositories Kolibri OS

(root)/kernel/trunk/fs/fat12.inc – Rev 379 → 380