Subversion Repositories Kolibri OS

Rev

Rev 133 | Rev 247 | Go to most recent revision | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 133 Rev 171
Line 916... Line 916...
916 
 
 916 
 
917 
ramdisk_root_extend_dir:
 917 
ramdisk_root_extend_dir:
918 
        stc
 918 
        stc
Line -... Line 919...
- 
 
 919 
        ret
- 
 
 920 
 
- 
 
 921 
uglobal
- 
 
 922 
; this is for delete support
- 
 
 923 
rd_prev_sector          dd      ?
- 
 
 924 
rd_prev_prev_sector     dd      ?
919 
        ret
 925 
endg
920 
 
 926 
 
921 
ramdisk_notroot_next:
 927 
ramdisk_notroot_next:
922 
        add     edi, 0x20
 928 
        add     edi, 0x20
923 
        test    edi, 0x1FF
 929 
        test    edi, 0x1FF
924 
        jz      ramdisk_notroot_next_sector
 930 
        jz      ramdisk_notroot_next_sector
925 
        ret     ; CF=0
 931 
        ret     ; CF=0
926 
ramdisk_notroot_next_sector:
 932 
ramdisk_notroot_next_sector:
- 
 
 933 
        push    ecx
- 
 
 934 
        mov     ecx, [eax]
- 
 
 935 
        push    [rd_prev_sector]
927 
        push    ecx
 936 
        pop     [rd_prev_prev_sector]
928 
        mov     ecx, [eax]
 937 
        mov     [rd_prev_sector], ecx
929 
        mov     ecx, [ecx*2+0x280000]
 938 
        mov     ecx, [ecx*2+0x280000]
930 
        and     ecx, 0xFFF
 939 
        and     ecx, 0xFFF
931 
        cmp     ecx, 2849
 940 
        cmp     ecx, 2849
Line 2287... Line 2296...
2287 
.eof:
 2296 
.eof:
2288 
        popad
 2297 
        popad
2289 
        mov     eax, 6
 2298 
        mov     eax, 6
2290 
        ret
 2299 
        ret
Line -... Line 2300...
- 
 
 2300 
 
- 
 
 2301 
;----------------------------------------------------------------
- 
 
 2302 
;
- 
 
 2303 
;  fs_RamdiskDelete - delete file or empty folder from ramdisk
- 
 
 2304 
;
- 
 
 2305 
;  esi  points to filename
- 
 
 2306 
;
- 
 
 2307 
;  ret  eax = 0 ok or other = errormsg
- 
 
 2308 
;
- 
 
 2309 
;--------------------------------------------------------------
- 
 
 2310 
fs_RamdiskDelete:
- 
 
 2311 
        cmp     byte [esi], 0
- 
 
 2312 
        jnz     @f
- 
 
 2313 
; cannot delete root!
- 
 
 2314 
.access_denied:
- 
 
 2315 
        push    ERROR_ACCESS_DENIED
- 
 
 2316 
.pop_ret:
- 
 
 2317 
        pop     eax
- 
 
 2318 
        ret
- 
 
 2319 
@@:
- 
 
 2320 
        and     [rd_prev_sector], 0
- 
 
 2321 
        and     [rd_prev_prev_sector], 0
- 
 
 2322 
        push    edi
- 
 
 2323 
        call    rd_find_lfn
- 
 
 2324 
        jnc     .found
- 
 
 2325 
        pop     edi
- 
 
 2326 
        push    ERROR_FILE_NOT_FOUND
- 
 
 2327 
        jmp     .pop_ret
- 
 
 2328 
.found:
- 
 
 2329 
        cmp     dword [edi], '.   '
- 
 
 2330 
        jz      .access_denied2
- 
 
 2331 
        cmp     dword [edi], '..  '
- 
 
 2332 
        jz      .access_denied2
- 
 
 2333 
        test    byte [edi+11], 10h
- 
 
 2334 
        jz      .dodel
- 
 
 2335 
; we can delete only empty folders!
- 
 
 2336 
        movzx   eax, word [edi+26]
- 
 
 2337 
        push    ebx
- 
 
 2338 
        mov     ebx, eax
- 
 
 2339 
        shl     ebx, 9
- 
 
 2340 
        add     ebx, RAMDISK + 31*0x200 + 2*0x20
- 
 
 2341 
.checkempty:
- 
 
 2342 
        cmp     byte [ebx], 0
- 
 
 2343 
        jz      .empty
- 
 
 2344 
        cmp     byte [ebx], 0xE5
- 
 
 2345 
        jnz     .notempty
- 
 
 2346 
        add     ebx, 0x20
- 
 
 2347 
        test    ebx, 0x1FF
- 
 
 2348 
        jnz     .checkempty
- 
 
 2349 
        movzx   eax, word [RAMDISK_FAT + eax*2]
- 
 
 2350 
        test    eax, eax
- 
 
 2351 
        jz      .empty
- 
 
 2352 
        mov     ebx, eax
- 
 
 2353 
        shl     ebx, 9
- 
 
 2354 
        add     ebx, RAMDISK + 31*0x200
- 
 
 2355 
        jmp     .checkempty
- 
 
 2356 
.notempty:
- 
 
 2357 
        pop     ebx
- 
 
 2358 
.access_denied2:
- 
 
 2359 
        pop     edi
- 
 
 2360 
        jmp     .access_denied
- 
 
 2361 
.empty:
- 
 
 2362 
        pop     ebx
- 
 
 2363 
.dodel:
- 
 
 2364 
        movzx   eax, word [edi+26]
- 
 
 2365 
; delete folder entry
- 
 
 2366 
        mov     byte [edi], 0xE5
- 
 
 2367 
; delete LFN (if present)
- 
 
 2368 
.lfndel:
- 
 
 2369 
        test    edi, 0x1FF
- 
 
 2370 
        jnz     @f
- 
 
 2371 
        cmp     [rd_prev_sector], 0
- 
 
 2372 
        jz      @f
- 
 
 2373 
        cmp     [rd_prev_sector], -1
- 
 
 2374 
        jz      .lfndone
- 
 
 2375 
        mov     edi, [rd_prev_sector]
- 
 
 2376 
        push    [rd_prev_prev_sector]
- 
 
 2377 
        pop     [rd_prev_sector]
- 
 
 2378 
        or      [rd_prev_prev_sector], -1
- 
 
 2379 
        shl     edi, 9
- 
 
 2380 
        add     edi, RAMDISK + 31*0x200 + 0x200
- 
 
 2381 
@@:
- 
 
 2382 
        sub     edi, 0x20
- 
 
 2383 
        cmp     byte [edi], 0xE5
- 
 
 2384 
        jz      .lfndone
- 
 
 2385 
        cmp     byte [edi+11], 0xF
- 
 
 2386 
        jnz     .lfndone
- 
 
 2387 
        mov     byte [edi], 0xE5
- 
 
 2388 
        jmp     .lfndel
- 
 
 2389 
.lfndone:
- 
 
 2390 
; delete FAT chain
- 
 
 2391 
        test    eax, eax
- 
 
 2392 
        jz      .done
- 
 
 2393 
        lea     eax, [RAMDISK_FAT + eax*2]
- 
 
 2394 
        push    dword [eax]
- 
 
 2395 
        and     word [eax], 0
- 
 
 2396 
        pop     eax
- 
 
 2397 
        and     eax, 0xFFF
- 
 
 2398 
        jmp     .lfndone
- 
 
 2399 
.done:
- 
 
 2400 
        pop     edi
- 
 
 2401 
        xor     eax, eax
- 
 
 2402 
        ret
2291 
 
 2403