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Line 5... Line 5...
5 
;;  FAT16/32 functions for MenuetOS                                ;;
 5 
;;  FAT16/32 functions for MenuetOS                                ;;
6 
;;                                                                 ;;
 6 
;;                                                                 ;;
7 
;;  Copyright 2002 Paolo Minazzi, paolo.minazzi@inwind.it          ;;
 7 
;;  Copyright 2002 Paolo Minazzi, paolo.minazzi@inwind.it          ;;
8 
;;                                                                 ;;
 8 
;;                                                                 ;;
9 
;;  See file COPYING for details                                   ;;
 9 
;;  See file COPYING for details                                   ;;
- 
 
 10 
;;  04.05.2006 LFN read folder - diamond                           ;;
10 
;;  29.04.2006 Elimination of hangup after the                     ;;
 11 
;;  29.04.2006 Elimination of hangup after the                     ;;
11 
;;             expiration hd_wait_timeout -  Mario79               ;;
12 
;;             expiration hd_wait_timeout -  Mario79               ;;
12 
;;  23.04.2006 LFN read - diamond                                  ;;
 13 
;;  23.04.2006 LFN read file - diamond                             ;;
13 
;;  28.01.2006 find all Fat16/32 partition in all input point      ;;
 14 
;;  28.01.2006 find all Fat16/32 partition in all input point      ;;
14 
;;             to MBR, see file part_set.inc - Mario79             ;;
 15 
;;             to MBR, see file part_set.inc - Mario79             ;;
15 
;;  15.01.2005 get file size/attr/date, file_append - ATV          ;;
 16 
;;  15.01.2005 get file size/attr/date, file_append - ATV          ;;
16 
;;  04.12.2004 skip volume label, file delete bug fixed - ATV      ;;
 17 
;;  04.12.2004 skip volume label, file delete bug fixed - ATV      ;;
17 
;;  29.11.2004 get_free_FAT changed, append dir bug fixed - ATV    ;;
 18 
;;  29.11.2004 get_free_FAT changed, append dir bug fixed - ATV    ;;
Line 2934... Line 2935...
2934 
; out: CF=1 - file not found
 2935 
; out: CF=1 - file not found
2935 
;      else CF=0 and edi->direntry
 2936 
;      else CF=0 and edi->direntry
2936 
    pusha
 2937 
        pusha
2937 
    sub    esp, 262*2    ; allocate space for LFN
 2938 
        sub     esp, 262*2      ; allocate space for LFN
2938 
    mov    ebp, esp
 2939 
        mov     ebp, esp
- 
 
 2940 
        push    0               ; for fat_get_name: read ASCII name
2939 
    mov    eax, [ROOT_CLUSTER]    ; start from root
 2941 
    mov    eax, [ROOT_CLUSTER]    ; start from root
2940 
.mainloop:
 2942 
.mainloop:
2941 
.new_cluster:
 2943 
.new_cluster:
2942 
    mov    [cluster_tmp], eax
 2944 
    mov    [cluster_tmp], eax
2943 
    mov    [fat16_root], 0
 2945 
    mov    [fat16_root], 0
Line 2988... Line 2990...
2988 
    cmp    eax, 2
 2990 
    cmp    eax, 2
2989 
    jb    .notfound
 2991 
    jb    .notfound
2990 
    cmp    eax, [fatRESERVED]
 2992 
    cmp    eax, [fatRESERVED]
2991 
    jb    .new_cluster
 2993 
    jb    .new_cluster
2992 
.notfound:
 2994 
.notfound:
2993 
    add    esp, 262*2
 2995 
    add    esp, 262*2+4
2994 
    popa
 2996 
    popa
2995 
    stc
 2997 
    stc
2996 
    ret
 2998 
    ret
2997 
.found:
 2999 
.found:
2998 
    pop    eax
 3000 
    pop    eax
Line 3034... Line 3036...
3034 
    jz    .notfound
 3036 
    jz    .notfound
3035 
    mov    eax, [edi+20-2]
 3037 
    mov    eax, [edi+20-2]
3036 
    mov    ax, [edi+26]
 3038 
    mov    ax, [edi+26]
3037 
    jmp    .mainloop
 3039 
    jmp    .mainloop
3038 
.done:
 3040 
.done:
3039 
    add    esp, 262*2+4    ; CF=0
 3041 
    add    esp, 262*2+4+4    ; CF=0
3040 
    push    edi
 3042 
    push    edi
3041 
    popad
 3043 
    popad
3042 
    ret
 3044 
    ret
Line 3043... Line 3045...
3043 
 
 3045 
 
Line 3195... Line 3197...
3195 
    xor    eax, eax
 3197 
    xor    eax, eax
3196 
    ret
 3198 
    ret
3197 
.eof:
 3199 
.eof:
3198 
    pop    ebx edx ecx ebx
 3200 
    pop    ebx edx ecx ebx
3199 
    jmp    .reteof
 3201 
    jmp    .reteof
- 
 
 3202 
 
- 
 
 3203 
;----------------------------------------------------------------
- 
 
 3204 
;
- 
 
 3205 
;  fs_HdReadFolder - LFN variant for reading hard disk folder
- 
 
 3206 
;
- 
 
 3207 
;  esi  points to filename
- 
 
 3208 
;  ebx  pointer to 32-bit number = first wanted block, 0+
- 
 
 3209 
;  ecx  number of blocks to read, 0+
- 
 
 3210 
;  edx  mem location to return data
- 
 
 3211 
;
- 
 
 3212 
;  ret ebx = size or 0xffffffff folder not found
- 
 
 3213 
;      eax = 0 ok read or other = errormsg
- 
 
 3214 
;
- 
 
 3215 
;--------------------------------------------------------------
- 
 
 3216 
fs_HdReadFolder:
- 
 
 3217 
        mov     ebx, [ebx]
- 
 
 3218 
        mov     eax, [ROOT_CLUSTER]
- 
 
 3219 
        push    edi
- 
 
 3220 
        cmp     byte [esi], 0
- 
 
 3221 
        jz      .doit
- 
 
 3222 
        call    hd_find_lfn
- 
 
 3223 
        jnc     .found
- 
 
 3224 
        pop     edi
- 
 
 3225 
        or      ebx, -1
- 
 
 3226 
        mov     eax, ERROR_FILE_NOT_FOUND
- 
 
 3227 
        ret
- 
 
 3228 
.found:
- 
 
 3229 
        test    byte [edi+11], 0x10     ; do not allow read files
- 
 
 3230 
        jnz     .found_dir
- 
 
 3231 
        pop     edi
- 
 
 3232 
        or      ebx, -1
- 
 
 3233 
        mov     eax, ERROR_ACCESS_DENIED
- 
 
 3234 
        ret
- 
 
 3235 
.found_dir:
- 
 
 3236 
        mov     eax, [edi+20-2]
- 
 
 3237 
        mov     ax, [edi+26]    ; eax=cluster
- 
 
 3238 
.doit:
- 
 
 3239 
        push    esi ecx
- 
 
 3240 
        push    ebp
- 
 
 3241 
        sub     esp, 262*2      ; reserve space for LFN
- 
 
 3242 
        mov     ebp, esp
- 
 
 3243 
        push    1               ; for fat_get_name: read UNICODE name
- 
 
 3244 
; init header
- 
 
 3245 
        push    eax ecx
- 
 
 3246 
        mov     edi, edx
- 
 
 3247 
        mov     ecx, 32/4
- 
 
 3248 
        xor     eax, eax
- 
 
 3249 
        rep     stosd
- 
 
 3250 
        pop     ecx eax
- 
 
 3251 
        mov     byte [edx], 1   ; version
- 
 
 3252 
        mov     esi, edi        ; esi points to BDFE
- 
 
 3253 
.new_cluster:
- 
 
 3254 
        mov     [cluster_tmp], eax
- 
 
 3255 
        test    eax, eax
- 
 
 3256 
        jnz     @f
- 
 
 3257 
        cmp     [fat_type], 32
- 
 
 3258 
        jz      .notfound
- 
 
 3259 
        mov     eax, [ROOT_START]
- 
 
 3260 
        push    [ROOT_SECTORS]
- 
 
 3261 
        push    ebx
- 
 
 3262 
        jmp     .new_sector
- 
 
 3263 
@@:
- 
 
 3264 
        dec     eax
- 
 
 3265 
        dec     eax
- 
 
 3266 
        imul    eax, [SECTORS_PER_CLUSTER]
- 
 
 3267 
        push    [SECTORS_PER_CLUSTER]
- 
 
 3268 
        add     eax, [DATA_START]
- 
 
 3269 
        push    ebx
- 
 
 3270 
.new_sector:
- 
 
 3271 
        mov     ebx, buffer
- 
 
 3272 
        mov     edi, ebx
- 
 
 3273 
        call    hd_read
- 
 
 3274 
        cmp     [hd_error], 0
- 
 
 3275 
        jnz     .notfound2
- 
 
 3276 
        add     ebx, 512
- 
 
 3277 
        push    eax
- 
 
 3278 
.l1:
- 
 
 3279 
        call    fat_get_name
- 
 
 3280 
        jc      .l2
- 
 
 3281 
        cmp     byte [edi+11], 0xF
- 
 
 3282 
        jnz     .do_bdfe
- 
 
 3283 
        add     edi, 0x20
- 
 
 3284 
        cmp     edi, ebx
- 
 
 3285 
        jb      .do_bdfe
- 
 
 3286 
        pop     eax
- 
 
 3287 
        inc     eax
- 
 
 3288 
        dec     dword [esp+4]
- 
 
 3289 
        jnz     @f
- 
 
 3290 
        mov     eax, [cluster_tmp]
- 
 
 3291 
        test    eax, eax
- 
 
 3292 
        jz      .done
- 
 
 3293 
        call    get_FAT
- 
 
 3294 
        cmp     [hd_error], 0
- 
 
 3295 
        jnz     .notfound2
- 
 
 3296 
        cmp     eax, 2
- 
 
 3297 
        jb      .done
- 
 
 3298 
        cmp     eax, [fatRESERVED]
- 
 
 3299 
        jae     .done
- 
 
 3300 
        push    eax
- 
 
 3301 
        mov     eax, [SECTORS_PER_CLUSTER]
- 
 
 3302 
        mov     [esp+8], eax
- 
 
 3303 
        pop     eax
- 
 
 3304 
        mov     [cluster_tmp], eax
- 
 
 3305 
        dec     eax
- 
 
 3306 
        dec     eax
- 
 
 3307 
        imul    eax, [SECTORS_PER_CLUSTER]
- 
 
 3308 
        add     eax, [DATA_START]
- 
 
 3309 
@@:
- 
 
 3310 
        mov     ebx, buffer
- 
 
 3311 
        mov     edi, ebx
- 
 
 3312 
        call    hd_read
- 
 
 3313 
        cmp     [hd_error], 0
- 
 
 3314 
        jnz     .notfound2
- 
 
 3315 
        add     ebx, 512
- 
 
 3316 
        push    eax
- 
 
 3317 
.do_bdfe:
- 
 
 3318 
        inc     dword [edx+8]   ; new file found
- 
 
 3319 
        dec     dword [esp+4]
- 
 
 3320 
        jns     .l2
- 
 
 3321 
        dec     ecx
- 
 
 3322 
        js      .l2
- 
 
 3323 
        inc     dword [edx+4]   ; new file block copied
- 
 
 3324 
        call    fat_entry_to_bdfe
- 
 
 3325 
.l2:
- 
 
 3326 
        add     edi, 0x20
- 
 
 3327 
        cmp     edi, ebx
- 
 
 3328 
        jb      .l1
- 
 
 3329 
        pop     eax
- 
 
 3330 
        inc     eax
- 
 
 3331 
        dec     dword [esp+4]
- 
 
 3332 
        jnz     .new_sector
- 
 
 3333 
        mov     eax, [cluster_tmp]
- 
 
 3334 
        test    eax, eax
- 
 
 3335 
        jz      .done
- 
 
 3336 
        call    get_FAT
- 
 
 3337 
        cmp     [hd_error], 0
- 
 
 3338 
        jnz     .notfound2
- 
 
 3339 
        cmp     eax, 2
- 
 
 3340 
        jb      .done
- 
 
 3341 
        cmp     eax, [fatRESERVED]
- 
 
 3342 
        jae     .done
- 
 
 3343 
        push    eax
- 
 
 3344 
        mov     eax, [SECTORS_PER_CLUSTER]
- 
 
 3345 
        mov     [esp+8], eax
- 
 
 3346 
        pop     eax
- 
 
 3347 
        pop     ebx
- 
 
 3348 
        add     esp, 4
- 
 
 3349 
        jmp     .new_cluster
- 
 
 3350 
.notfound2:
- 
 
 3351 
        add     esp, 8
- 
 
 3352 
.notfound:
- 
 
 3353 
        add     esp, 262*2+4
- 
 
 3354 
        pop     ebp ecx esi edi
- 
 
 3355 
        mov     eax, ERROR_FILE_NOT_FOUND
- 
 
 3356 
        or      ebx, -1
- 
 
 3357 
        ret
- 
 
 3358 
.done:
- 
 
 3359 
        add     esp, 262*2+4+8
- 
 
 3360 
        pop     ebp
- 
 
 3361 
        mov     ebx, [edx+8]
- 
 
 3362 
        xor     eax, eax
- 
 
 3363 
        dec     ecx
- 
 
 3364 
        js      @f
- 
 
 3365 
        mov     al, ERROR_END_OF_FILE
- 
 
 3366 
@@:
- 
 
 3367 
        pop     ecx esi edi
- 
 
 3368 
        ret
- 
 
 3369 
 
3200 
; \end{diamond}
 3370 
; \end{diamond}