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Rev 848 | Rev 2971 | ||
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1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
2 | ;; ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2007. 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 | ;; RAMDISK functions ;; |
6 | ;; RAMDISK functions ;; |
7 | ;; (C) 2004 Ville Turjanmaa, License: GPL ;; |
7 | ;; (C) 2004 Ville Turjanmaa, License: GPL ;; |
8 | ;; Addings by M.Lisovin ;; |
8 | ;; Addings by M.Lisovin ;; |
9 | ;; LFN support by diamond ;; |
9 | ;; LFN support by diamond ;; |
10 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
10 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
11 | 11 | ||
12 | $Revision: 848 $ |
12 | $Revision: 2971 $ |
13 | 13 | ||
14 | 14 | ||
15 | ; calculate fat chain |
15 | ; calculate fat chain |
16 | 16 | ||
17 | calculatefatchain: |
17 | calculatefatchain: |
18 | 18 | ||
19 | pushad |
19 | pushad |
20 | 20 | ||
21 | mov esi, [_rd_fat] |
21 | mov esi, [_rd_fat] |
22 | mov edi,RAMDISK_FAT |
22 | mov edi,RAMDISK_FAT |
23 | 23 | ||
24 | fcnew: |
24 | fcnew: |
25 | mov eax,dword [esi] |
25 | mov eax,dword [esi] |
26 | mov ebx,dword [esi+4] |
26 | mov ebx,dword [esi+4] |
27 | mov ecx,dword [esi+8] |
27 | mov ecx,dword [esi+8] |
28 | mov edx,ecx |
28 | mov edx,ecx |
29 | shr edx,4 ;8 ok |
29 | shr edx,4 ;8 ok |
30 | shr dx,4 ;7 ok |
30 | shr dx,4 ;7 ok |
31 | xor ch,ch |
31 | xor ch,ch |
32 | shld ecx,ebx,20 ;6 ok |
32 | shld ecx,ebx,20 ;6 ok |
33 | shr cx,4 ;5 ok |
33 | shr cx,4 ;5 ok |
34 | shld ebx,eax,12 |
34 | shld ebx,eax,12 |
35 | and ebx,0x0fffffff ;4 ok |
35 | and ebx,0x0fffffff ;4 ok |
36 | shr bx,4 ;3 ok |
36 | shr bx,4 ;3 ok |
37 | shl eax,4 |
37 | shl eax,4 |
38 | and eax,0x0fffffff ;2 ok |
38 | and eax,0x0fffffff ;2 ok |
39 | shr ax,4 ;1 ok |
39 | shr ax,4 ;1 ok |
40 | mov dword [edi],eax |
40 | mov dword [edi],eax |
41 | mov dword [edi+4],ebx |
41 | mov dword [edi+4],ebx |
42 | mov dword [edi+8],ecx |
42 | mov dword [edi+8],ecx |
43 | mov dword [edi+12],edx |
43 | mov dword [edi+12],edx |
44 | add edi,16 |
44 | add edi,16 |
45 | add esi,12 |
45 | add esi,12 |
46 | 46 | ||
47 | cmp edi,RAMDISK_FAT+2856*2 ;2849 clusters |
47 | cmp edi,RAMDISK_FAT+2856*2 ;2849 clusters |
48 | jnz fcnew |
48 | jnz fcnew |
49 | 49 | ||
50 | popad |
50 | popad |
51 | ret |
51 | ret |
52 | 52 | ||
53 | 53 | ||
54 | restorefatchain: ; restore fat chain |
54 | restorefatchain: ; restore fat chain |
55 | 55 | ||
56 | pushad |
56 | pushad |
57 | 57 | ||
58 | mov esi,RAMDISK_FAT |
58 | mov esi,RAMDISK_FAT |
59 | mov edi, [_rd_fat] |
59 | mov edi, [_rd_fat] |
60 | 60 | ||
61 | fcnew2: |
61 | fcnew2: |
62 | mov eax,dword [esi] |
62 | mov eax,dword [esi] |
63 | mov ebx,dword [esi+4] |
63 | mov ebx,dword [esi+4] |
64 | shl ax,4 |
64 | shl ax,4 |
65 | shl eax,4 |
65 | shl eax,4 |
66 | shl bx,4 |
66 | shl bx,4 |
67 | shr ebx,4 |
67 | shr ebx,4 |
68 | shrd eax,ebx,8 |
68 | shrd eax,ebx,8 |
69 | shr ebx,8 |
69 | shr ebx,8 |
70 | mov dword [edi],eax |
70 | mov dword [edi],eax |
71 | mov word [edi+4],bx |
71 | mov word [edi+4],bx |
72 | add edi,6 |
72 | add edi,6 |
73 | add esi,8 |
73 | add esi,8 |
74 | 74 | ||
75 | cmp edi, [_rd_fat_end] ;4274 bytes - all used FAT |
75 | cmp edi, [_rd_fat_end] ;4274 bytes - all used FAT |
76 | jb fcnew2 |
76 | jb fcnew2 |
77 | 77 | ||
78 | mov esi,[_rd_fat] ; duplicate fat chain |
78 | mov esi,[_rd_fat] ; duplicate fat chain |
79 | lea edi,[esi+0x1200] |
79 | lea edi,[esi+0x1200] |
80 | mov ecx,1069 ;4274/4 |
80 | mov ecx,1069 ;4274/4 |
81 | cld |
81 | cld |
82 | rep movsd |
82 | rep movsd |
83 | 83 | ||
84 | popad |
84 | popad |
85 | ret |
85 | ret |
86 | 86 | ||
87 | 87 | ||
88 | ramdisk_free_space: |
88 | ramdisk_free_space: |
89 | ;--------------------------------------------- |
89 | ;--------------------------------------------- |
90 | ; |
90 | ; |
91 | ; returns free space in edi |
91 | ; returns free space in edi |
92 | ; rewr.by Mihasik |
92 | ; rewr.by Mihasik |
93 | ;--------------------------------------------- |
93 | ;--------------------------------------------- |
94 | 94 | ||
95 | push eax ebx ecx |
95 | push eax ebx ecx |
96 | 96 | ||
97 | mov edi,RAMDISK_FAT ;start of FAT |
97 | mov edi,RAMDISK_FAT ;start of FAT |
98 | xor ax,ax ;Free cluster=0x0000 in FAT |
98 | xor ax,ax ;Free cluster=0x0000 in FAT |
99 | xor ebx,ebx ;counter |
99 | xor ebx,ebx ;counter |
100 | mov ecx,2849 ;2849 clusters |
100 | mov ecx,2849 ;2849 clusters |
101 | cld |
101 | cld |
102 | rdfs1: |
102 | rdfs1: |
103 | repne scasw |
103 | repne scasw |
104 | jnz rdfs2 ;if last cluster not 0 |
104 | jnz rdfs2 ;if last cluster not 0 |
105 | inc ebx |
105 | inc ebx |
106 | test ecx, ecx |
106 | test ecx, ecx |
107 | jnz rdfs1 |
107 | jnz rdfs1 |
108 | rdfs2: |
108 | rdfs2: |
109 | shl ebx,9 ;free clusters*512 |
109 | shl ebx,9 ;free clusters*512 |
110 | mov edi,ebx |
110 | mov edi,ebx |
111 | 111 | ||
112 | pop ecx ebx eax |
112 | pop ecx ebx eax |
113 | ret |
113 | ret |
114 | 114 | ||
115 | 115 | ||
116 | expand_filename: |
116 | expand_filename: |
117 | ;--------------------------------------------- |
117 | ;--------------------------------------------- |
118 | ; |
118 | ; |
119 | ; exapand filename with '.' to 11 character |
119 | ; exapand filename with '.' to 11 character |
120 | ; eax - pointer to filename |
120 | ; eax - pointer to filename |
121 | ;--------------------------------------------- |
121 | ;--------------------------------------------- |
122 | 122 | ||
123 | push esi edi ebx |
123 | push esi edi ebx |
124 | 124 | ||
125 | mov edi,esp ; check for '.' in the name |
125 | mov edi,esp ; check for '.' in the name |
126 | add edi,12+8 |
126 | add edi,12+8 |
127 | 127 | ||
128 | mov esi,eax |
128 | mov esi,eax |
129 | 129 | ||
130 | mov eax,edi |
130 | mov eax,edi |
131 | mov [eax+0],dword ' ' |
131 | mov [eax+0],dword ' ' |
132 | mov [eax+4],dword ' ' |
132 | mov [eax+4],dword ' ' |
133 | mov [eax+8],dword ' ' |
133 | mov [eax+8],dword ' ' |
134 | 134 | ||
135 | flr1: |
135 | flr1: |
136 | 136 | ||
137 | cmp [esi],byte '.' |
137 | cmp [esi],byte '.' |
138 | jne flr2 |
138 | jne flr2 |
139 | mov edi,eax |
139 | mov edi,eax |
140 | add edi,7 |
140 | add edi,7 |
141 | jmp flr3 |
141 | jmp flr3 |
142 | 142 | ||
143 | flr2: |
143 | flr2: |
144 | 144 | ||
145 | mov bl,[esi] |
145 | mov bl,[esi] |
146 | mov [edi],bl |
146 | mov [edi],bl |
147 | 147 | ||
148 | flr3: |
148 | flr3: |
149 | 149 | ||
150 | inc esi |
150 | inc esi |
151 | inc edi |
151 | inc edi |
152 | 152 | ||
153 | mov ebx,eax |
153 | mov ebx,eax |
154 | add ebx,11 |
154 | add ebx,11 |
155 | 155 | ||
156 | cmp edi,ebx |
156 | cmp edi,ebx |
157 | jbe flr1 |
157 | jbe flr1 |
158 | 158 | ||
159 | pop ebx edi esi |
159 | pop ebx edi esi |
160 | ret |
160 | ret |
161 | 161 | ||
162 | fileread: |
162 | fileread: |
163 | ;---------------------------------------------------------------- |
163 | ;---------------------------------------------------------------- |
164 | ; |
164 | ; |
165 | ; fileread - sys floppy |
165 | ; fileread - sys floppy |
166 | ; |
166 | ; |
167 | ; eax points to filename 11 chars |
167 | ; eax points to filename 11 chars |
168 | ; ebx first wanted block ; 1+ ; if 0 then set to 1 |
168 | ; ebx first wanted block ; 1+ ; if 0 then set to 1 |
169 | ; ecx number of blocks to read ; 1+ ; if 0 then set to 1 |
169 | ; ecx number of blocks to read ; 1+ ; if 0 then set to 1 |
170 | ; edx mem location to return data |
170 | ; edx mem location to return data |
171 | ; esi length of filename 12*X 0=root |
171 | ; esi length of filename 12*X 0=root |
172 | ; |
172 | ; |
173 | ; ret ebx = size or 0xffffffff file not found |
173 | ; ret ebx = size or 0xffffffff file not found |
174 | ; eax = 0 ok read or other = errormsg |
174 | ; eax = 0 ok read or other = errormsg |
175 | ; |
175 | ; |
176 | ;-------------------------------------------------------------- |
176 | ;-------------------------------------------------------------- |
177 | test ebx,ebx ;if ebx=0 - set to 1 |
177 | test ebx,ebx ;if ebx=0 - set to 1 |
178 | jnz frfl5 |
178 | jnz frfl5 |
179 | inc ebx |
179 | inc ebx |
180 | frfl5: |
180 | frfl5: |
181 | test ecx,ecx ;if ecx=0 - set to 1 |
181 | test ecx,ecx ;if ecx=0 - set to 1 |
182 | jnz frfl6 |
182 | jnz frfl6 |
183 | inc ecx |
183 | inc ecx |
184 | frfl6: |
184 | frfl6: |
185 | test esi,esi ; return ramdisk root |
185 | test esi,esi ; return ramdisk root |
186 | jnz fr_noroot ;if not root |
186 | jnz fr_noroot ;if not root |
187 | cmp ebx,14 ;14 clusters=root dir |
187 | cmp ebx,14 ;14 clusters=root dir |
188 | ja oorr |
188 | ja oorr |
189 | cmp ecx,14 |
189 | cmp ecx,14 |
190 | ja oorr |
190 | ja oorr |
191 | jmp fr_do |
191 | jmp fr_do |
192 | oorr: |
192 | oorr: |
193 | mov eax,5 ;out of root range (fnf) |
193 | mov eax,5 ;out of root range (fnf) |
194 | xor ebx,ebx |
194 | xor ebx,ebx |
195 | dec ebx ;0xffffffff |
195 | dec ebx ;0xffffffff |
196 | ret |
196 | ret |
197 | 197 | ||
198 | fr_do: ;reading rootdir |
198 | fr_do: ;reading rootdir |
199 | mov edi,edx |
199 | mov edi,edx |
200 | dec ebx |
200 | dec ebx |
201 | push edx |
201 | push edx |
202 | mov edx,ecx |
202 | mov edx,ecx |
203 | add edx,ebx |
203 | add edx,ebx |
204 | cmp edx,15 ;ebx+ecx=14+1 |
204 | cmp edx,15 ;ebx+ecx=14+1 |
205 | pushf |
205 | pushf |
206 | jbe fr_do1 |
206 | jbe fr_do1 |
207 | sub edx,14 |
207 | sub edx,14 |
208 | sub ecx,edx |
208 | sub ecx,edx |
209 | fr_do1: |
209 | fr_do1: |
210 | shl ebx,9 |
210 | shl ebx,9 |
211 | mov esi, [_rd_root] |
211 | mov esi, [_rd_root] |
212 | add esi,ebx |
212 | add esi,ebx |
213 | shl ecx,7 |
213 | shl ecx,7 |
214 | cld |
214 | cld |
215 | rep movsd |
215 | rep movsd |
216 | popf |
216 | popf |
217 | pop edx |
217 | pop edx |
218 | jae fr_do2 |
218 | jae fr_do2 |
219 | xor eax,eax ; ok read |
219 | xor eax,eax ; ok read |
220 | xor ebx,ebx |
220 | xor ebx,ebx |
221 | ret |
221 | ret |
222 | fr_do2: ;if last cluster |
222 | fr_do2: ;if last cluster |
223 | mov eax,6 ;end of file |
223 | mov eax,6 ;end of file |
224 | xor ebx,ebx |
224 | xor ebx,ebx |
225 | ret |
225 | ret |
226 | 226 | ||
227 | fr_noroot: |
227 | fr_noroot: |
228 | 228 | ||
229 | sub esp,32 |
229 | sub esp,32 |
230 | call expand_filename |
230 | call expand_filename |
231 | 231 | ||
232 | dec ebx |
232 | dec ebx |
233 | 233 | ||
234 | push eax |
234 | push eax |
235 | 235 | ||
236 | push eax ebx ecx edx esi edi |
236 | push eax ebx ecx edx esi edi |
237 | call rd_findfile |
237 | call rd_findfile |
238 | je fifound |
238 | je fifound |
239 | add esp,32+28 ;if file not found |
239 | add esp,32+28 ;if file not found |
240 | ret |
240 | ret |
241 | 241 | ||
242 | fifound: |
242 | fifound: |
243 | 243 | ||
244 | mov ebx,[edi-11+28] ;file size |
244 | mov ebx,[edi-11+28] ;file size |
245 | mov [esp+20],ebx |
245 | mov [esp+20],ebx |
246 | mov [esp+24],ebx |
246 | mov [esp+24],ebx |
247 | add edi,0xf |
247 | add edi,0xf |
248 | movzx eax,word [edi] |
248 | movzx eax,word [edi] |
249 | mov edi,eax ;edi=cluster |
249 | mov edi,eax ;edi=cluster |
250 | 250 | ||
251 | frnew: |
251 | frnew: |
252 | 252 | ||
253 | add eax,31 ;bootsector+2*fat+filenames |
253 | add eax,31 ;bootsector+2*fat+filenames |
254 | shl eax,9 ;*512 |
254 | shl eax,9 ;*512 |
255 | add eax, [_rd_base] ;image base |
255 | add eax, [_rd_base] ;image base |
256 | mov ebx,[esp+8] |
256 | mov ebx,[esp+8] |
257 | mov ecx,512 ;[esp+4] |
257 | mov ecx,512 ;[esp+4] |
258 | 258 | ||
259 | cmp [esp+16],dword 0 ; wanted cluster ? |
259 | cmp [esp+16],dword 0 ; wanted cluster ? |
260 | jne frfl7 |
260 | jne frfl7 |
261 | call memmove |
261 | call memmove |
262 | add [esp+8],dword 512 |
262 | add [esp+8],dword 512 |
263 | dec dword [esp+12] ; last wanted cluster ? |
263 | dec dword [esp+12] ; last wanted cluster ? |
264 | je frnoread |
264 | je frnoread |
265 | jmp frfl8 |
265 | jmp frfl8 |
266 | frfl7: |
266 | frfl7: |
267 | dec dword [esp+16] |
267 | dec dword [esp+16] |
268 | frfl8: |
268 | frfl8: |
269 | movzx eax,word [edi*2+RAMDISK_FAT] ; find next cluster from FAT |
269 | movzx eax,word [edi*2+RAMDISK_FAT] ; find next cluster from FAT |
270 | mov edi,eax |
270 | mov edi,eax |
271 | cmp edi,4095 ;eof - cluster |
271 | cmp edi,4095 ;eof - cluster |
272 | jz frnoread2 |
272 | jz frnoread2 |
273 | 273 | ||
274 | cmp [esp+24],dword 512 ;eof - size |
274 | cmp [esp+24],dword 512 ;eof - size |
275 | jb frnoread |
275 | jb frnoread |
276 | sub [esp+24],dword 512 |
276 | sub [esp+24],dword 512 |
277 | 277 | ||
278 | jmp frnew |
278 | jmp frnew |
279 | 279 | ||
280 | frnoread2: |
280 | frnoread2: |
281 | 281 | ||
282 | cmp [esp+16],dword 0 ; eof without read ? |
282 | cmp [esp+16],dword 0 ; eof without read ? |
283 | je frnoread |
283 | je frnoread |
284 | 284 | ||
285 | pop edi esi edx ecx |
285 | pop edi esi edx ecx |
286 | add esp,4 |
286 | add esp,4 |
287 | pop ebx ; ebx <- eax : size of file |
287 | pop ebx ; ebx <- eax : size of file |
288 | add esp,36 |
288 | add esp,36 |
289 | mov eax,6 ; end of file |
289 | mov eax,6 ; end of file |
290 | ret |
290 | ret |
291 | 291 | ||
292 | frnoread: |
292 | frnoread: |
293 | 293 | ||
294 | pop edi esi edx ecx |
294 | pop edi esi edx ecx |
295 | add esp,4 |
295 | add esp,4 |
296 | pop ebx ; ebx <- eax : size of file |
296 | pop ebx ; ebx <- eax : size of file |
297 | add esp,36 |
297 | add esp,36 |
298 | xor eax,eax ;read ok |
298 | xor eax,eax ;read ok |
299 | ret |
299 | ret |
300 | 300 | ||
301 | 301 | ||
302 | 302 | ||
303 | rd_findfile: |
303 | rd_findfile: |
304 | ;by Mihasik |
304 | ;by Mihasik |
305 | ;IN: eax - pointer to filename OUT: filestring+11 in edi or notZero in flags and fnf in eax,ebx |
305 | ;IN: eax - pointer to filename OUT: filestring+11 in edi or notZero in flags and fnf in eax,ebx |
306 | 306 | ||
307 | mov edi, [_rd_root] ;Point at directory |
307 | mov edi, [_rd_root] ;Point at directory |
308 | cld |
308 | cld |
309 | rd_newsearch: |
309 | rd_newsearch: |
310 | mov esi,eax |
310 | mov esi,eax |
311 | mov ecx,11 |
311 | mov ecx,11 |
312 | rep cmpsb |
312 | rep cmpsb |
313 | je rd_ff |
313 | je rd_ff |
314 | add cl,21 |
314 | add cl,21 |
315 | add edi,ecx |
315 | add edi,ecx |
316 | cmp edi, [_rd_root_end] |
316 | cmp edi, [_rd_root_end] |
317 | jb rd_newsearch |
317 | jb rd_newsearch |
318 | mov eax,5 ;if file not found - eax=5 |
318 | mov eax,5 ;if file not found - eax=5 |
319 | xor ebx,ebx |
319 | xor ebx,ebx |
320 | dec ebx ;ebx=0xffffffff and zf=0 |
320 | dec ebx ;ebx=0xffffffff and zf=0 |
321 | rd_ff: |
321 | rd_ff: |
322 | ret |
322 | ret |
323 | 323 | ||
324 | ; \begin{diamond} |
324 | ; \begin{diamond} |
325 | 325 | ||
326 | uni2ansi_str: |
326 | uni2ansi_str: |
327 | ; convert UNICODE zero-terminated string to ASCII-string (codepage 866) |
327 | ; convert UNICODE zero-terminated string to ASCII-string (codepage 866) |
328 | ; in: esi->source, edi->buffer (may be esi=edi) |
328 | ; in: esi->source, edi->buffer (may be esi=edi) |
329 | ; destroys: eax,esi,edi |
329 | ; destroys: eax,esi,edi |
330 | lodsw |
330 | lodsw |
331 | test ax, ax |
331 | test ax, ax |
332 | jz .done |
332 | jz .done |
333 | cmp ax, 0x80 |
333 | cmp ax, 0x80 |
334 | jb .ascii |
334 | jb .ascii |
335 | cmp ax, 0x401 |
335 | cmp ax, 0x401 |
336 | jz .yo1 |
336 | jz .yo1 |
337 | cmp ax, 0x451 |
337 | cmp ax, 0x451 |
338 | jz .yo2 |
338 | jz .yo2 |
339 | cmp ax, 0x410 |
339 | cmp ax, 0x410 |
340 | jb .unk |
340 | jb .unk |
341 | cmp ax, 0x440 |
341 | cmp ax, 0x440 |
342 | jb .rus1 |
342 | jb .rus1 |
343 | cmp ax, 0x450 |
343 | cmp ax, 0x450 |
344 | jb .rus2 |
344 | jb .rus2 |
345 | .unk: |
345 | .unk: |
346 | mov al, '_' |
346 | mov al, '_' |
347 | jmp .doit |
347 | jmp .doit |
348 | .yo1: |
348 | .yo1: |
349 | mov al, 'ð' |
349 | mov al, 'ð' |
350 | jmp .doit |
350 | jmp .doit |
351 | .yo2: |
351 | .yo2: |
352 | mov al, 'ñ' |
352 | mov al, 'ñ' |
353 | jmp .doit |
353 | jmp .doit |
354 | .rus1: |
354 | .rus1: |
355 | ; 0x410-0x43F -> 0x80-0xAF |
355 | ; 0x410-0x43F -> 0x80-0xAF |
356 | add al, 0x70 |
356 | add al, 0x70 |
357 | jmp .doit |
357 | jmp .doit |
358 | .rus2: |
358 | .rus2: |
359 | ; 0x440-0x44F -> 0xE0-0xEF |
359 | ; 0x440-0x44F -> 0xE0-0xEF |
360 | add al, 0xA0 |
360 | add al, 0xA0 |
361 | .ascii: |
361 | .ascii: |
362 | .doit: |
362 | .doit: |
363 | stosb |
363 | stosb |
364 | jmp uni2ansi_str |
364 | jmp uni2ansi_str |
365 | .done: |
365 | .done: |
366 | mov byte [edi], 0 |
366 | mov byte [edi], 0 |
367 | ret |
367 | ret |
368 | 368 | ||
369 | ansi2uni_char: |
369 | ansi2uni_char: |
370 | ; convert ANSI character in al to UNICODE character in ax, using cp866 encoding |
370 | ; convert ANSI character in al to UNICODE character in ax, using cp866 encoding |
371 | mov ah, 0 |
371 | mov ah, 0 |
372 | ; 0x00-0x7F - trivial map |
372 | ; 0x00-0x7F - trivial map |
373 | cmp al, 0x80 |
373 | cmp al, 0x80 |
374 | jb .ret |
374 | jb .ret |
375 | ; 0x80-0xAF -> 0x410-0x43F |
375 | ; 0x80-0xAF -> 0x410-0x43F |
376 | cmp al, 0xB0 |
376 | cmp al, 0xB0 |
377 | jae @f |
377 | jae @f |
378 | add ax, 0x410-0x80 |
378 | add ax, 0x410-0x80 |
379 | .ret: |
379 | .ret: |
380 | ret |
380 | ret |
381 | @@: |
381 | @@: |
382 | ; 0xE0-0xEF -> 0x440-0x44F |
382 | ; 0xE0-0xEF -> 0x440-0x44F |
383 | cmp al, 0xE0 |
383 | cmp al, 0xE0 |
384 | jb .unk |
384 | jb .unk |
385 | cmp al, 0xF0 |
385 | cmp al, 0xF0 |
386 | jae @f |
386 | jae @f |
387 | add ax, 0x440-0xE0 |
387 | add ax, 0x440-0xE0 |
388 | ret |
388 | ret |
389 | ; 0xF0 -> 0x401 |
389 | ; 0xF0 -> 0x401 |
390 | ; 0xF1 -> 0x451 |
390 | ; 0xF1 -> 0x451 |
391 | @@: |
391 | @@: |
392 | cmp al, 'ð' |
392 | cmp al, 'ð' |
393 | jz .yo1 |
393 | jz .yo1 |
394 | cmp al, 'ñ' |
394 | cmp al, 'ñ' |
395 | jz .yo2 |
395 | jz .yo2 |
396 | .unk: |
396 | .unk: |
397 | mov al, '_' ; ah=0 |
397 | mov al, '_' ; ah=0 |
398 | ret |
398 | ret |
399 | .yo1: |
399 | .yo1: |
400 | mov ax, 0x401 |
400 | mov ax, 0x401 |
401 | ret |
401 | ret |
402 | .yo2: |
402 | .yo2: |
403 | mov ax, 0x451 |
403 | mov ax, 0x451 |
404 | ret |
404 | ret |
405 | 405 | ||
406 | char_toupper: |
406 | char_toupper: |
407 | ; convert character to uppercase, using cp866 encoding |
407 | ; convert character to uppercase, using cp866 encoding |
408 | ; in: al=symbol |
408 | ; in: al=symbol |
409 | ; out: al=converted symbol |
409 | ; out: al=converted symbol |
410 | cmp al, 'a' |
410 | cmp al, 'a' |
411 | jb .ret |
411 | jb .ret |
412 | cmp al, 'z' |
412 | cmp al, 'z' |
413 | jbe .az |
413 | jbe .az |
414 | cmp al, ' ' |
414 | cmp al, ' ' |
415 | jb .ret |
415 | jb .ret |
416 | cmp al, 'à' |
416 | cmp al, 'à' |
417 | jb .rus1 |
417 | jb .rus1 |
418 | cmp al, 'ï' |
418 | cmp al, 'ï' |
419 | ja .ret |
419 | ja .ret |
420 | ; 0xE0-0xEF -> 0x90-0x9F |
420 | ; 0xE0-0xEF -> 0x90-0x9F |
421 | sub al, 'à'-'' |
421 | sub al, 'à'-'' |
422 | .ret: |
422 | .ret: |
423 | ret |
423 | ret |
424 | .rus1: |
424 | .rus1: |
425 | ; 0xA0-0xAF -> 0x80-0x8F |
425 | ; 0xA0-0xAF -> 0x80-0x8F |
426 | .az: |
426 | .az: |
427 | and al, not 0x20 |
427 | and al, not 0x20 |
428 | ret |
428 | ret |
429 | 429 | ||
430 | fat_get_name: |
430 | fat_get_name: |
431 | ; in: edi->FAT entry |
431 | ; in: edi->FAT entry |
432 | ; out: CF=1 - no valid entry |
432 | ; out: CF=1 - no valid entry |
433 | ; else CF=0 and ebp->ASCIIZ-name |
433 | ; else CF=0 and ebp->ASCIIZ-name |
434 | ; (maximum length of filename is 255 (wide) symbols without trailing 0, |
434 | ; (maximum length of filename is 255 (wide) symbols without trailing 0, |
435 | ; but implementation requires buffer 261 words) |
435 | ; but implementation requires buffer 261 words) |
436 | ; destroys eax |
436 | ; destroys eax |
437 | cmp byte [edi], 0 |
437 | cmp byte [edi], 0 |
438 | jz .no |
438 | jz .no |
439 | cmp byte [edi], 0xE5 |
439 | cmp byte [edi], 0xE5 |
440 | jnz @f |
440 | jnz @f |
441 | .no: |
441 | .no: |
442 | stc |
442 | stc |
443 | ret |
443 | ret |
444 | @@: |
444 | @@: |
445 | cmp byte [edi+11], 0xF |
445 | cmp byte [edi+11], 0xF |
446 | jz .longname |
446 | jz .longname |
447 | test byte [edi+11], 8 |
447 | test byte [edi+11], 8 |
448 | jnz .no |
448 | jnz .no |
449 | push ecx |
449 | push ecx |
450 | push edi ebp |
450 | push edi ebp |
451 | test byte [ebp-4], 1 |
451 | test byte [ebp-4], 1 |
452 | jnz .unicode_short |
452 | jnz .unicode_short |
453 | 453 | ||
454 | mov eax, [edi] |
454 | mov eax, [edi] |
455 | mov ecx, [edi+4] |
455 | mov ecx, [edi+4] |
456 | mov [ebp], eax |
456 | mov [ebp], eax |
457 | mov [ebp+4], ecx |
457 | mov [ebp+4], ecx |
458 | 458 | ||
459 | mov ecx, 8 |
459 | mov ecx, 8 |
460 | @@: |
460 | @@: |
461 | cmp byte [ebp+ecx-1], ' ' |
461 | cmp byte [ebp+ecx-1], ' ' |
462 | loope @b |
462 | loope @b |
463 | 463 | ||
464 | mov eax, [edi+8] |
464 | mov eax, [edi+8] |
465 | cmp al, ' ' |
465 | cmp al, ' ' |
466 | je .done |
466 | je .done |
467 | shl eax, 8 |
467 | shl eax, 8 |
468 | mov al, '.' |
468 | mov al, '.' |
469 | 469 | ||
470 | lea ebp, [ebp+ecx+1] |
470 | lea ebp, [ebp+ecx+1] |
471 | mov [ebp], eax |
471 | mov [ebp], eax |
472 | mov ecx, 3 |
472 | mov ecx, 3 |
473 | @@: |
473 | @@: |
474 | rol eax, 8 |
474 | rol eax, 8 |
475 | cmp al, ' ' |
475 | cmp al, ' ' |
476 | jne .done |
476 | jne .done |
477 | loop @b |
477 | loop @b |
478 | dec ebp |
478 | dec ebp |
479 | .done: |
479 | .done: |
480 | and byte [ebp+ecx+1], 0 ; CF=0 |
480 | and byte [ebp+ecx+1], 0 ; CF=0 |
481 | pop ebp edi ecx |
481 | pop ebp edi ecx |
482 | ret |
482 | ret |
483 | .unicode_short: |
483 | .unicode_short: |
484 | mov ecx, 8 |
484 | mov ecx, 8 |
485 | push ecx |
485 | push ecx |
486 | @@: |
486 | @@: |
487 | mov al, [edi] |
487 | mov al, [edi] |
488 | inc edi |
488 | inc edi |
489 | call ansi2uni_char |
489 | call ansi2uni_char |
490 | mov [ebp], ax |
490 | mov [ebp], ax |
491 | inc ebp |
491 | inc ebp |
492 | inc ebp |
492 | inc ebp |
493 | loop @b |
493 | loop @b |
494 | pop ecx |
494 | pop ecx |
495 | @@: |
495 | @@: |
496 | cmp word [ebp-2], ' ' |
496 | cmp word [ebp-2], ' ' |
497 | jnz @f |
497 | jnz @f |
498 | dec ebp |
498 | dec ebp |
499 | dec ebp |
499 | dec ebp |
500 | loop @b |
500 | loop @b |
501 | @@: |
501 | @@: |
502 | mov word [ebp], '.' |
502 | mov word [ebp], '.' |
503 | inc ebp |
503 | inc ebp |
504 | inc ebp |
504 | inc ebp |
505 | mov ecx, 3 |
505 | mov ecx, 3 |
506 | push ecx |
506 | push ecx |
507 | @@: |
507 | @@: |
508 | mov al, [edi] |
508 | mov al, [edi] |
509 | inc edi |
509 | inc edi |
510 | call ansi2uni_char |
510 | call ansi2uni_char |
511 | mov [ebp], ax |
511 | mov [ebp], ax |
512 | inc ebp |
512 | inc ebp |
513 | inc ebp |
513 | inc ebp |
514 | loop @b |
514 | loop @b |
515 | pop ecx |
515 | pop ecx |
516 | @@: |
516 | @@: |
517 | cmp word [ebp-2], ' ' |
517 | cmp word [ebp-2], ' ' |
518 | jnz @f |
518 | jnz @f |
519 | dec ebp |
519 | dec ebp |
520 | dec ebp |
520 | dec ebp |
521 | loop @b |
521 | loop @b |
522 | dec ebp |
522 | dec ebp |
523 | dec ebp |
523 | dec ebp |
524 | @@: |
524 | @@: |
525 | and word [ebp], 0 ; CF=0 |
525 | and word [ebp], 0 ; CF=0 |
526 | pop ebp edi ecx |
526 | pop ebp edi ecx |
527 | ret |
527 | ret |
528 | .longname: |
528 | .longname: |
529 | ; LFN |
529 | ; LFN |
530 | mov al, byte [edi] |
530 | mov al, byte [edi] |
531 | and eax, 0x3F |
531 | and eax, 0x3F |
532 | dec eax |
532 | dec eax |
533 | cmp al, 20 |
533 | cmp al, 20 |
534 | jae .no ; ignore invalid entries |
534 | jae .no ; ignore invalid entries |
535 | mov word [ebp+260*2], 0 ; force null-terminating for orphans |
535 | mov word [ebp+260*2], 0 ; force null-terminating for orphans |
536 | imul eax, 13*2 |
536 | imul eax, 13*2 |
537 | add ebp, eax |
537 | add ebp, eax |
538 | test byte [edi], 0x40 |
538 | test byte [edi], 0x40 |
539 | jz @f |
539 | jz @f |
540 | mov word [ebp+13*2], 0 |
540 | mov word [ebp+13*2], 0 |
541 | @@: |
541 | @@: |
542 | push eax |
542 | push eax |
543 | ; now copy name from edi to ebp ... |
543 | ; now copy name from edi to ebp ... |
544 | mov eax, [edi+1] |
544 | mov eax, [edi+1] |
545 | mov [ebp], eax ; symbols 1,2 |
545 | mov [ebp], eax ; symbols 1,2 |
546 | mov eax, [edi+5] |
546 | mov eax, [edi+5] |
547 | mov [ebp+4], eax ; 3,4 |
547 | mov [ebp+4], eax ; 3,4 |
548 | mov eax, [edi+9] |
548 | mov eax, [edi+9] |
549 | mov [ebp+8], ax ; 5 |
549 | mov [ebp+8], ax ; 5 |
550 | mov eax, [edi+14] |
550 | mov eax, [edi+14] |
551 | mov [ebp+10], eax ; 6,7 |
551 | mov [ebp+10], eax ; 6,7 |
552 | mov eax, [edi+18] |
552 | mov eax, [edi+18] |
553 | mov [ebp+14], eax ; 8,9 |
553 | mov [ebp+14], eax ; 8,9 |
554 | mov eax, [edi+22] |
554 | mov eax, [edi+22] |
555 | mov [ebp+18], eax ; 10,11 |
555 | mov [ebp+18], eax ; 10,11 |
556 | mov eax, [edi+28] |
556 | mov eax, [edi+28] |
557 | mov [ebp+22], eax ; 12,13 |
557 | mov [ebp+22], eax ; 12,13 |
558 | ; ... done |
558 | ; ... done |
559 | pop eax |
559 | pop eax |
560 | sub ebp, eax |
560 | sub ebp, eax |
561 | test eax, eax |
561 | test eax, eax |
562 | jz @f |
562 | jz @f |
563 | ; if this is not first entry, more processing required |
563 | ; if this is not first entry, more processing required |
564 | stc |
564 | stc |
565 | ret |
565 | ret |
566 | @@: |
566 | @@: |
567 | ; if this is first entry: |
567 | ; if this is first entry: |
568 | test byte [ebp-4], 1 |
568 | test byte [ebp-4], 1 |
569 | jnz .ret |
569 | jnz .ret |
570 | ; buffer at ebp contains UNICODE name, convert it to ANSI |
570 | ; buffer at ebp contains UNICODE name, convert it to ANSI |
571 | push esi edi |
571 | push esi edi |
572 | mov esi, ebp |
572 | mov esi, ebp |
573 | mov edi, ebp |
573 | mov edi, ebp |
574 | call uni2ansi_str |
574 | call uni2ansi_str |
575 | pop edi esi |
575 | pop edi esi |
576 | .ret: |
576 | .ret: |
577 | clc |
577 | clc |
578 | ret |
578 | ret |
579 | 579 | ||
580 | fat_compare_name: |
580 | fat_compare_name: |
581 | ; compares ASCIIZ-names, case-insensitive (cp866 encoding) |
581 | ; compares ASCIIZ-names, case-insensitive (cp866 encoding) |
582 | ; in: esi->name, ebp->name |
582 | ; in: esi->name, ebp->name |
583 | ; out: if names match: ZF=1 and esi->next component of name |
583 | ; out: if names match: ZF=1 and esi->next component of name |
584 | ; else: ZF=0, esi is not changed |
584 | ; else: ZF=0, esi is not changed |
585 | ; destroys eax |
585 | ; destroys eax |
586 | push ebp esi |
586 | push ebp esi |
587 | .loop: |
587 | .loop: |
588 | mov al, [ebp] |
588 | mov al, [ebp] |
589 | inc ebp |
589 | inc ebp |
590 | call char_toupper |
590 | call char_toupper |
591 | push eax |
591 | push eax |
592 | lodsb |
592 | lodsb |
593 | call char_toupper |
593 | call char_toupper |
594 | cmp al, [esp] |
594 | cmp al, [esp] |
595 | jnz .done |
595 | jnz .done |
596 | pop eax |
596 | pop eax |
597 | test al, al |
597 | test al, al |
598 | jnz .loop |
598 | jnz .loop |
599 | dec esi |
599 | dec esi |
600 | pop eax |
600 | pop eax |
601 | pop ebp |
601 | pop ebp |
602 | xor eax, eax ; set ZF flag |
602 | xor eax, eax ; set ZF flag |
603 | ret |
603 | ret |
604 | .done: |
604 | .done: |
605 | cmp al, '/' |
605 | cmp al, '/' |
606 | jnz @f |
606 | jnz @f |
607 | cmp byte [esp], 0 |
607 | cmp byte [esp], 0 |
608 | jnz @f |
608 | jnz @f |
609 | mov [esp+4], esi |
609 | mov [esp+4], esi |
610 | @@: |
610 | @@: |
611 | pop eax |
611 | pop eax |
612 | pop esi ebp |
612 | pop esi ebp |
613 | ret |
613 | ret |
614 | 614 | ||
615 | fat_time_to_bdfe: |
615 | fat_time_to_bdfe: |
616 | ; in: eax=FAT time |
616 | ; in: eax=FAT time |
617 | ; out: eax=BDFE time |
617 | ; out: eax=BDFE time |
618 | push ecx edx |
618 | push ecx edx |
619 | mov ecx, eax |
619 | mov ecx, eax |
620 | mov edx, eax |
620 | mov edx, eax |
621 | shr eax, 11 |
621 | shr eax, 11 |
622 | shl eax, 16 ; hours |
622 | shl eax, 16 ; hours |
623 | and edx, 0x1F |
623 | and edx, 0x1F |
624 | add edx, edx |
624 | add edx, edx |
625 | mov al, dl ; seconds |
625 | mov al, dl ; seconds |
626 | shr ecx, 5 |
626 | shr ecx, 5 |
627 | and ecx, 0x3F |
627 | and ecx, 0x3F |
628 | mov ah, cl ; minutes |
628 | mov ah, cl ; minutes |
629 | pop edx ecx |
629 | pop edx ecx |
630 | ret |
630 | ret |
631 | 631 | ||
632 | fat_date_to_bdfe: |
632 | fat_date_to_bdfe: |
633 | push ecx edx |
633 | push ecx edx |
634 | mov ecx, eax |
634 | mov ecx, eax |
635 | mov edx, eax |
635 | mov edx, eax |
636 | shr eax, 9 |
636 | shr eax, 9 |
637 | add ax, 1980 |
637 | add ax, 1980 |
638 | shl eax, 16 ; year |
638 | shl eax, 16 ; year |
639 | and edx, 0x1F |
639 | and edx, 0x1F |
640 | mov al, dl ; day |
640 | mov al, dl ; day |
641 | shr ecx, 5 |
641 | shr ecx, 5 |
642 | and ecx, 0xF |
642 | and ecx, 0xF |
643 | mov ah, cl ; month |
643 | mov ah, cl ; month |
644 | pop edx ecx |
644 | pop edx ecx |
645 | ret |
645 | ret |
646 | 646 | ||
647 | bdfe_to_fat_time: |
647 | bdfe_to_fat_time: |
648 | push edx |
648 | push edx |
649 | mov edx, eax |
649 | mov edx, eax |
650 | shr eax, 16 |
650 | shr eax, 16 |
651 | and dh, 0x3F |
651 | and dh, 0x3F |
652 | shl eax, 6 |
652 | shl eax, 6 |
653 | or al, dh |
653 | or al, dh |
654 | shr dl, 1 |
654 | shr dl, 1 |
655 | and dl, 0x1F |
655 | and dl, 0x1F |
656 | shl eax, 5 |
656 | shl eax, 5 |
657 | or al, dl |
657 | or al, dl |
658 | pop edx |
658 | pop edx |
659 | ret |
659 | ret |
660 | 660 | ||
661 | bdfe_to_fat_date: |
661 | bdfe_to_fat_date: |
662 | push edx |
662 | push edx |
663 | mov edx, eax |
663 | mov edx, eax |
664 | shr eax, 16 |
664 | shr eax, 16 |
665 | sub ax, 1980 |
665 | sub ax, 1980 |
666 | and dh, 0xF |
666 | and dh, 0xF |
667 | shl eax, 4 |
667 | shl eax, 4 |
668 | or al, dh |
668 | or al, dh |
669 | and dl, 0x1F |
669 | and dl, 0x1F |
670 | shl eax, 5 |
670 | shl eax, 5 |
671 | or al, dl |
671 | or al, dl |
672 | pop edx |
672 | pop edx |
673 | ret |
673 | ret |
674 | 674 | ||
675 | fat_entry_to_bdfe: |
675 | fat_entry_to_bdfe: |
676 | ; convert FAT entry at edi to BDFE (block of data of folder entry) at esi, advance esi |
676 | ; convert FAT entry at edi to BDFE (block of data of folder entry) at esi, advance esi |
677 | ; destroys eax |
677 | ; destroys eax |
678 | mov eax, [ebp-4] |
678 | mov eax, [ebp-4] |
679 | mov [esi+4], eax ; ASCII/UNICODE name |
679 | mov [esi+4], eax ; ASCII/UNICODE name |
680 | fat_entry_to_bdfe2: |
680 | fat_entry_to_bdfe2: |
681 | movzx eax, byte [edi+11] |
681 | movzx eax, byte [edi+11] |
682 | mov [esi], eax ; attributes |
682 | mov [esi], eax ; attributes |
683 | movzx eax, word [edi+14] |
683 | movzx eax, word [edi+14] |
684 | call fat_time_to_bdfe |
684 | call fat_time_to_bdfe |
685 | mov [esi+8], eax ; creation time |
685 | mov [esi+8], eax ; creation time |
686 | movzx eax, word [edi+16] |
686 | movzx eax, word [edi+16] |
687 | call fat_date_to_bdfe |
687 | call fat_date_to_bdfe |
688 | mov [esi+12], eax ; creation date |
688 | mov [esi+12], eax ; creation date |
689 | and dword [esi+16], 0 ; last access time is not supported on FAT |
689 | and dword [esi+16], 0 ; last access time is not supported on FAT |
690 | movzx eax, word [edi+18] |
690 | movzx eax, word [edi+18] |
691 | call fat_date_to_bdfe |
691 | call fat_date_to_bdfe |
692 | mov [esi+20], eax ; last access date |
692 | mov [esi+20], eax ; last access date |
693 | movzx eax, word [edi+22] |
693 | movzx eax, word [edi+22] |
694 | call fat_time_to_bdfe |
694 | call fat_time_to_bdfe |
695 | mov [esi+24], eax ; last write time |
695 | mov [esi+24], eax ; last write time |
696 | movzx eax, word [edi+24] |
696 | movzx eax, word [edi+24] |
697 | call fat_date_to_bdfe |
697 | call fat_date_to_bdfe |
698 | mov [esi+28], eax ; last write date |
698 | mov [esi+28], eax ; last write date |
699 | mov eax, [edi+28] |
699 | mov eax, [edi+28] |
700 | mov [esi+32], eax ; file size (low dword) |
700 | mov [esi+32], eax ; file size (low dword) |
701 | xor eax, eax |
701 | xor eax, eax |
702 | mov [esi+36], eax ; file size (high dword) |
702 | mov [esi+36], eax ; file size (high dword) |
703 | test ebp, ebp |
703 | test ebp, ebp |
704 | jz .ret |
704 | jz .ret |
705 | push ecx edi |
705 | push ecx edi |
706 | lea edi, [esi+40] |
706 | lea edi, [esi+40] |
707 | mov esi, ebp |
707 | mov esi, ebp |
708 | test byte [esi-4], 1 |
708 | test byte [esi-4], 1 |
709 | jz .ansi |
709 | jz .ansi |
710 | mov ecx, 260/2 |
710 | mov ecx, 260/2 |
711 | rep movsd |
711 | rep movsd |
712 | mov [edi-2], ax |
712 | mov [edi-2], ax |
713 | @@: |
713 | @@: |
714 | mov esi, edi |
714 | mov esi, edi |
715 | pop edi ecx |
715 | pop edi ecx |
716 | .ret: |
716 | .ret: |
717 | ret |
717 | ret |
718 | .ansi: |
718 | .ansi: |
719 | mov ecx, 264/4 |
719 | mov ecx, 264/4 |
720 | rep movsd |
720 | rep movsd |
721 | mov [edi-1], al |
721 | mov [edi-1], al |
722 | jmp @b |
722 | jmp @b |
723 | 723 | ||
724 | bdfe_to_fat_entry: |
724 | bdfe_to_fat_entry: |
725 | ; convert BDFE at edx to FAT entry at edi |
725 | ; convert BDFE at edx to FAT entry at edi |
726 | ; destroys eax |
726 | ; destroys eax |
727 | ; attributes byte |
727 | ; attributes byte |
728 | test byte [edi+11], 8 ; volume label? |
728 | test byte [edi+11], 8 ; volume label? |
729 | jnz @f |
729 | jnz @f |
730 | mov al, [edx] |
730 | mov al, [edx] |
731 | and al, 0x27 |
731 | and al, 0x27 |
732 | and byte [edi+11], 0x10 |
732 | and byte [edi+11], 0x10 |
733 | or byte [edi+11], al |
733 | or byte [edi+11], al |
734 | @@: |
734 | @@: |
735 | mov eax, [edx+8] |
735 | mov eax, [edx+8] |
736 | call bdfe_to_fat_time |
736 | call bdfe_to_fat_time |
737 | mov [edi+14], ax ; creation time |
737 | mov [edi+14], ax ; creation time |
738 | mov eax, [edx+12] |
738 | mov eax, [edx+12] |
739 | call bdfe_to_fat_date |
739 | call bdfe_to_fat_date |
740 | mov [edi+16], ax ; creation date |
740 | mov [edi+16], ax ; creation date |
741 | mov eax, [edx+20] |
741 | mov eax, [edx+20] |
742 | call bdfe_to_fat_date |
742 | call bdfe_to_fat_date |
743 | mov [edi+18], ax ; last access date |
743 | mov [edi+18], ax ; last access date |
744 | mov eax, [edx+24] |
744 | mov eax, [edx+24] |
745 | call bdfe_to_fat_time |
745 | call bdfe_to_fat_time |
746 | mov [edi+22], ax ; last write time |
746 | mov [edi+22], ax ; last write time |
747 | mov eax, [edx+28] |
747 | mov eax, [edx+28] |
748 | call bdfe_to_fat_date |
748 | call bdfe_to_fat_date |
749 | mov [edi+24], ax ; last write date |
749 | mov [edi+24], ax ; last write date |
750 | ret |
750 | ret |
751 | 751 | ||
752 | ramdisk_root_first: |
752 | ramdisk_root_first: |
753 | mov edi, [_rd_root] |
753 | mov edi, [_rd_root] |
754 | clc |
754 | clc |
755 | ret |
755 | ret |
756 | ramdisk_root_next: |
756 | ramdisk_root_next: |
757 | add edi, 0x20 |
757 | add edi, 0x20 |
758 | cmp edi, [_rd_root_end] |
758 | cmp edi, [_rd_root_end] |
759 | cmc |
759 | cmc |
760 | ret |
760 | ret |
761 | 761 | ||
762 | ramdisk_root_extend_dir: |
762 | ramdisk_root_extend_dir: |
763 | stc |
763 | stc |
764 | ret |
764 | ret |
765 | 765 | ||
766 | uglobal |
766 | uglobal |
767 | ; this is for delete support |
767 | ; this is for delete support |
768 | rd_prev_sector dd ? |
768 | rd_prev_sector dd ? |
769 | rd_prev_prev_sector dd ? |
769 | rd_prev_prev_sector dd ? |
770 | endg |
770 | endg |
771 | 771 | ||
772 | ramdisk_notroot_next: |
772 | ramdisk_notroot_next: |
773 | add edi, 0x20 |
773 | add edi, 0x20 |
774 | test edi, 0x1FF |
774 | test edi, 0x1FF |
775 | jz ramdisk_notroot_next_sector |
775 | jz ramdisk_notroot_next_sector |
776 | ret ; CF=0 |
776 | ret ; CF=0 |
777 | ramdisk_notroot_next_sector: |
777 | ramdisk_notroot_next_sector: |
778 | push ecx |
778 | push ecx |
779 | mov ecx, [eax] |
779 | mov ecx, [eax] |
780 | push [rd_prev_sector] |
780 | push [rd_prev_sector] |
781 | pop [rd_prev_prev_sector] |
781 | pop [rd_prev_prev_sector] |
782 | mov [rd_prev_sector], ecx |
782 | mov [rd_prev_sector], ecx |
783 | mov ecx, [ecx*2+RAMDISK_FAT] |
783 | mov ecx, [ecx*2+RAMDISK_FAT] |
784 | and ecx, 0xFFF |
784 | and ecx, 0xFFF |
785 | cmp ecx, 2849 |
785 | cmp ecx, 2849 |
786 | jae ramdisk_notroot_first.err2 |
786 | jae ramdisk_notroot_first.err2 |
787 | mov [eax], ecx |
787 | mov [eax], ecx |
788 | pop ecx |
788 | pop ecx |
789 | ramdisk_notroot_first: |
789 | ramdisk_notroot_first: |
790 | mov eax, [eax] |
790 | mov eax, [eax] |
791 | cmp eax, 2 |
791 | cmp eax, 2 |
792 | jb .err |
792 | jb .err |
793 | cmp eax, 2849 |
793 | cmp eax, 2849 |
794 | jae .err |
794 | jae .err |
795 | shl eax, 9 |
795 | shl eax, 9 |
796 | lea edi, [eax+(31 shl 9)] |
796 | lea edi, [eax+(31 shl 9)] |
797 | add edi, [_rd_base] |
797 | add edi, [_rd_base] |
798 | clc |
798 | clc |
799 | ret |
799 | ret |
800 | .err2: |
800 | .err2: |
801 | pop ecx |
801 | pop ecx |
802 | .err: |
802 | .err: |
803 | stc |
803 | stc |
804 | ret |
804 | ret |
805 | ramdisk_notroot_next_write: |
805 | ramdisk_notroot_next_write: |
806 | test edi, 0x1FF |
806 | test edi, 0x1FF |
807 | jz ramdisk_notroot_next_sector |
807 | jz ramdisk_notroot_next_sector |
808 | ramdisk_root_next_write: |
808 | ramdisk_root_next_write: |
809 | ret |
809 | ret |
810 | 810 | ||
811 | ramdisk_notroot_extend_dir: |
811 | ramdisk_notroot_extend_dir: |
812 | pusha |
812 | pusha |
813 | xor eax, eax |
813 | xor eax, eax |
814 | mov edi, RAMDISK_FAT |
814 | mov edi, RAMDISK_FAT |
815 | mov ecx, 2849 |
815 | mov ecx, 2849 |
816 | repnz scasw |
816 | repnz scasw |
817 | jnz .notfound |
817 | jnz .notfound |
818 | mov word [edi-2], 0xFFF |
818 | mov word [edi-2], 0xFFF |
819 | sub edi, RAMDISK_FAT |
819 | sub edi, RAMDISK_FAT |
820 | shr edi, 1 |
820 | shr edi, 1 |
821 | dec edi |
821 | dec edi |
822 | mov eax, [esp+28] |
822 | mov eax, [esp+28] |
823 | mov ecx, [eax] |
823 | mov ecx, [eax] |
824 | mov [RAMDISK_FAT+ecx*2], di |
824 | mov [RAMDISK_FAT+ecx*2], di |
825 | mov [eax], edi |
825 | mov [eax], edi |
826 | shl edi, 9 |
826 | shl edi, 9 |
827 | add edi, (31 shl 9) |
827 | add edi, (31 shl 9) |
828 | add edi, [_rd_base] |
828 | add edi, [_rd_base] |
829 | mov [esp], edi |
829 | mov [esp], edi |
830 | xor eax, eax |
830 | xor eax, eax |
831 | mov ecx, 128 |
831 | mov ecx, 128 |
832 | rep stosd |
832 | rep stosd |
833 | popa |
833 | popa |
834 | clc |
834 | clc |
835 | ret |
835 | ret |
836 | .notfound: |
836 | .notfound: |
837 | popa |
837 | popa |
838 | stc |
838 | stc |
839 | ret |
839 | ret |
840 | 840 | ||
841 | rd_find_lfn: |
841 | rd_find_lfn: |
842 | ; in: esi+ebp -> name |
842 | ; in: esi+ebp -> name |
843 | ; out: CF=1 - file not found |
843 | ; out: CF=1 - file not found |
844 | ; else CF=0 and edi->direntry |
844 | ; else CF=0 and edi->direntry |
845 | push esi edi |
845 | push esi edi |
846 | push 0 |
846 | push 0 |
847 | push ramdisk_root_first |
847 | push ramdisk_root_first |
848 | push ramdisk_root_next |
848 | push ramdisk_root_next |
849 | .loop: |
849 | .loop: |
850 | call fat_find_lfn |
850 | call fat_find_lfn |
851 | jc .notfound |
851 | jc .notfound |
852 | cmp byte [esi], 0 |
852 | cmp byte [esi], 0 |
853 | jz .found |
853 | jz .found |
854 | .continue: |
854 | .continue: |
855 | test byte [edi+11], 10h |
855 | test byte [edi+11], 10h |
856 | jz .notfound |
856 | jz .notfound |
857 | movzx eax, word [edi+26] |
857 | movzx eax, word [edi+26] |
858 | mov [esp+8], eax |
858 | mov [esp+8], eax |
859 | mov dword [esp+4], ramdisk_notroot_first |
859 | mov dword [esp+4], ramdisk_notroot_first |
860 | mov dword [esp], ramdisk_notroot_next |
860 | mov dword [esp], ramdisk_notroot_next |
- | 861 | test eax, eax |
|
- | 862 | jnz .loop |
|
- | 863 | mov dword [esp+4], ramdisk_root_first |
|
- | 864 | mov dword [esp], ramdisk_notroot_next |
|
861 | jmp .loop |
865 | jmp .loop |
862 | .notfound: |
866 | .notfound: |
863 | add esp, 12 |
867 | add esp, 12 |
864 | pop edi esi |
868 | pop edi esi |
865 | stc |
869 | stc |
866 | ret |
870 | ret |
867 | .found: |
871 | .found: |
868 | test ebp, ebp |
872 | test ebp, ebp |
869 | jz @f |
873 | jz @f |
870 | mov esi, ebp |
874 | mov esi, ebp |
871 | xor ebp, ebp |
875 | xor ebp, ebp |
872 | jmp .continue |
876 | jmp .continue |
873 | @@: |
877 | @@: |
874 | mov eax, [esp+8] |
878 | mov eax, [esp+8] |
875 | add esp, 16 ; CF=0 |
879 | add esp, 16 ; CF=0 |
876 | pop esi |
880 | pop esi |
877 | ret |
881 | ret |
878 | 882 | ||
879 | ;---------------------------------------------------------------- |
883 | ;---------------------------------------------------------------- |
880 | ; |
884 | ; |
881 | ; fs_RamdiskRead - LFN variant for reading sys floppy |
885 | ; fs_RamdiskRead - LFN variant for reading sys floppy |
882 | ; |
886 | ; |
883 | ; esi points to filename |
887 | ; esi points to filename |
884 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
888 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
885 | ; may be ebx=0 - start from first byte |
889 | ; may be ebx=0 - start from first byte |
886 | ; ecx number of bytes to read, 0+ |
890 | ; ecx number of bytes to read, 0+ |
887 | ; edx mem location to return data |
891 | ; edx mem location to return data |
888 | ; |
892 | ; |
889 | ; ret ebx = bytes read or 0xffffffff file not found |
893 | ; ret ebx = bytes read or 0xffffffff file not found |
890 | ; eax = 0 ok read or other = errormsg |
894 | ; eax = 0 ok read or other = errormsg |
891 | ; |
895 | ; |
892 | ;-------------------------------------------------------------- |
896 | ;-------------------------------------------------------------- |
893 | fs_RamdiskRead: |
897 | fs_RamdiskRead: |
894 | - | ||
895 | cmp byte [esi], 0 |
898 | cmp byte [esi], 0 |
896 | jnz @f |
899 | jnz @f |
897 | or ebx, -1 |
900 | or ebx, -1 |
898 | mov eax, 10 ; access denied |
901 | mov eax, 10 ; access denied |
899 | ret |
902 | ret |
900 | @@: |
903 | @@: |
901 | push edi |
904 | push edi |
902 | call rd_find_lfn |
905 | call rd_find_lfn |
903 | jnc .found |
906 | jnc .found |
904 | pop edi |
907 | pop edi |
905 | or ebx, -1 |
908 | or ebx, -1 |
906 | mov eax, 5 ; file not found |
909 | mov eax, 5 ; file not found |
907 | ret |
910 | ret |
908 | .found: |
911 | .found: |
909 | test ebx, ebx |
912 | test ebx, ebx |
910 | jz .l1 |
913 | jz .l1 |
911 | cmp dword [ebx+4], 0 |
914 | cmp dword [ebx+4], 0 |
912 | jz @f |
915 | jz @f |
913 | xor ebx, ebx |
916 | xor ebx, ebx |
914 | .reteof: |
917 | .reteof: |
915 | mov eax, 6 ; EOF |
918 | mov eax, 6 ; EOF |
916 | pop edi |
919 | pop edi |
917 | ret |
920 | ret |
918 | @@: |
921 | @@: |
919 | mov ebx, [ebx] |
922 | mov ebx, [ebx] |
920 | .l1: |
923 | .l1: |
921 | push ecx edx |
924 | push ecx edx |
922 | push 0 |
925 | push 0 |
923 | mov eax, [edi+28] |
926 | mov eax, [edi+28] |
924 | sub eax, ebx |
927 | sub eax, ebx |
925 | jb .eof |
928 | jb .eof |
926 | cmp eax, ecx |
929 | cmp eax, ecx |
927 | jae @f |
930 | jae @f |
928 | mov ecx, eax |
931 | mov ecx, eax |
929 | mov byte [esp], 6 ; EOF |
932 | mov byte [esp], 6 ; EOF |
930 | @@: |
933 | @@: |
931 | movzx edi, word [edi+26] ; cluster |
934 | movzx edi, word [edi+26] ; cluster |
932 | .new: |
935 | .new: |
933 | jecxz .done |
936 | jecxz .done |
934 | test edi, edi |
937 | test edi, edi |
935 | jz .eof |
938 | jz .eof |
936 | cmp edi, 0xFF8 |
939 | cmp edi, 0xFF8 |
937 | jae .eof |
940 | jae .eof |
938 | lea eax, [edi+31] ; bootsector+2*fat+filenames |
941 | lea eax, [edi+31] ; bootsector+2*fat+filenames |
939 | shl eax, 9 ; *512 |
942 | shl eax, 9 ; *512 |
940 | add eax, [_rd_base] ; image base |
943 | add eax, [_rd_base] ; image base |
941 | ; now eax points to data of cluster |
944 | ; now eax points to data of cluster |
942 | sub ebx, 512 |
945 | sub ebx, 512 |
943 | jae .skip |
946 | jae .skip |
944 | lea eax, [eax+ebx+512] |
947 | lea eax, [eax+ebx+512] |
945 | neg ebx |
948 | neg ebx |
946 | push ecx |
949 | push ecx |
947 | cmp ecx, ebx |
950 | cmp ecx, ebx |
948 | jbe @f |
951 | jbe @f |
949 | mov ecx, ebx |
952 | mov ecx, ebx |
950 | @@: |
953 | @@: |
951 | mov ebx, edx |
954 | mov ebx, edx |
952 | call memmove |
955 | call memmove |
953 | add edx, ecx |
956 | add edx, ecx |
954 | sub [esp], ecx |
957 | sub [esp], ecx |
955 | pop ecx |
958 | pop ecx |
956 | xor ebx, ebx |
959 | xor ebx, ebx |
957 | .skip: |
960 | .skip: |
958 | movzx edi, word [edi*2+RAMDISK_FAT] ; find next cluster from FAT |
961 | movzx edi, word [edi*2+RAMDISK_FAT] ; find next cluster from FAT |
959 | jmp .new |
962 | jmp .new |
960 | .eof: |
963 | .eof: |
961 | mov ebx, edx |
964 | mov ebx, edx |
962 | pop eax edx ecx |
965 | pop eax edx ecx |
963 | sub ebx, edx |
966 | sub ebx, edx |
964 | jmp .reteof |
967 | jmp .reteof |
965 | .done: |
968 | .done: |
966 | mov ebx, edx |
969 | mov ebx, edx |
967 | pop eax edx ecx edi |
970 | pop eax edx ecx edi |
968 | sub ebx, edx |
971 | sub ebx, edx |
969 | ret |
972 | ret |
970 | 973 | ||
971 | ;---------------------------------------------------------------- |
974 | ;---------------------------------------------------------------- |
972 | ; |
975 | ; |
973 | ; fs_RamdiskReadFolder - LFN variant for reading sys floppy folder |
976 | ; fs_RamdiskReadFolder - LFN variant for reading sys floppy folder |
974 | ; |
977 | ; |
975 | ; esi points to filename; only root is folder on ramdisk |
978 | ; esi points to filename; only root is folder on ramdisk |
976 | ; ebx pointer to structure 32-bit number = first wanted block |
979 | ; ebx pointer to structure 32-bit number = first wanted block |
977 | ; & flags (bitfields) |
980 | ; & flags (bitfields) |
978 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
981 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
979 | ; ecx number of blocks to read, 0+ |
982 | ; ecx number of blocks to read, 0+ |
980 | ; edx mem location to return data |
983 | ; edx mem location to return data |
981 | ; |
984 | ; |
982 | ; ret ebx = size or 0xffffffff file not found |
985 | ; ret ebx = size or 0xffffffff file not found |
983 | ; eax = 0 ok read or other = errormsg |
986 | ; eax = 0 ok read or other = errormsg |
984 | ; |
987 | ; |
985 | ;-------------------------------------------------------------- |
988 | ;-------------------------------------------------------------- |
986 | fs_RamdiskReadFolder: |
989 | fs_RamdiskReadFolder: |
987 | push edi |
990 | push edi |
988 | cmp byte [esi], 0 |
991 | cmp byte [esi], 0 |
989 | jz .root |
992 | jz .root |
990 | call rd_find_lfn |
993 | call rd_find_lfn |
991 | jnc .found |
994 | jnc .found |
992 | pop edi |
995 | pop edi |
993 | or ebx, -1 |
996 | or ebx, -1 |
994 | mov eax, ERROR_FILE_NOT_FOUND |
997 | mov eax, ERROR_FILE_NOT_FOUND |
995 | ret |
998 | ret |
996 | .found: |
999 | .found: |
997 | test byte [edi+11], 0x10 |
1000 | test byte [edi+11], 0x10 |
998 | jnz .found_dir |
1001 | jnz .found_dir |
999 | pop edi |
1002 | pop edi |
1000 | or ebx, -1 |
1003 | or ebx, -1 |
1001 | mov eax, ERROR_ACCESS_DENIED |
1004 | mov eax, ERROR_ACCESS_DENIED |
1002 | ret |
1005 | ret |
1003 | .found_dir: |
1006 | .found_dir: |
1004 | movzx eax, word [edi+26] |
1007 | movzx eax, word [edi+26] |
1005 | add eax, 31 |
1008 | add eax, 31 |
1006 | push 0 |
1009 | push 0 |
1007 | jmp .doit |
1010 | jmp .doit |
1008 | .root: |
1011 | .root: |
1009 | mov eax, 19 |
1012 | mov eax, 19 |
1010 | push 14 |
1013 | push 14 |
1011 | .doit: |
1014 | .doit: |
1012 | push esi ecx ebp |
1015 | push esi ecx ebp |
1013 | sub esp, 262*2 ; reserve space for LFN |
1016 | sub esp, 262*2 ; reserve space for LFN |
1014 | mov ebp, esp |
1017 | mov ebp, esp |
1015 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE names |
1018 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE names |
1016 | mov ebx, [ebx] |
1019 | mov ebx, [ebx] |
1017 | ; init header |
1020 | ; init header |
1018 | push eax ecx |
1021 | push eax ecx |
1019 | mov edi, edx |
1022 | mov edi, edx |
1020 | mov ecx, 32/4 |
1023 | mov ecx, 32/4 |
1021 | xor eax, eax |
1024 | xor eax, eax |
1022 | rep stosd |
1025 | rep stosd |
1023 | mov byte [edx], 1 ; version |
1026 | mov byte [edx], 1 ; version |
1024 | pop ecx eax |
1027 | pop ecx eax |
1025 | mov esi, edi ; esi points to block of data of folder entry (BDFE) |
1028 | mov esi, edi ; esi points to block of data of folder entry (BDFE) |
1026 | .main_loop: |
1029 | .main_loop: |
1027 | mov edi, eax |
1030 | mov edi, eax |
1028 | shl edi, 9 |
1031 | shl edi, 9 |
1029 | add edi, [_rd_base] |
1032 | add edi, [_rd_base] |
1030 | push eax |
1033 | push eax |
1031 | .l1: |
1034 | .l1: |
1032 | call fat_get_name |
1035 | call fat_get_name |
1033 | jc .l2 |
1036 | jc .l2 |
1034 | cmp byte [edi+11], 0xF |
1037 | cmp byte [edi+11], 0xF |
1035 | jnz .do_bdfe |
1038 | jnz .do_bdfe |
1036 | add edi, 0x20 |
1039 | add edi, 0x20 |
1037 | test edi, 0x1FF |
1040 | test edi, 0x1FF |
1038 | jnz .do_bdfe |
1041 | jnz .do_bdfe |
1039 | pop eax |
1042 | pop eax |
1040 | inc eax |
1043 | inc eax |
1041 | dec byte [esp+262*2+16] |
1044 | dec byte [esp+262*2+16] |
1042 | jz .done |
1045 | jz .done |
1043 | jns @f |
1046 | jns @f |
1044 | ; read next sector from FAT |
1047 | ; read next sector from FAT |
1045 | mov eax, [(eax-31-1)*2+RAMDISK_FAT] |
1048 | mov eax, [(eax-31-1)*2+RAMDISK_FAT] |
1046 | and eax, 0xFFF |
1049 | and eax, 0xFFF |
1047 | cmp eax, 0xFF8 |
1050 | cmp eax, 0xFF8 |
1048 | jae .done |
1051 | jae .done |
1049 | add eax, 31 |
1052 | add eax, 31 |
1050 | mov byte [esp+262*2+16], 0 |
1053 | mov byte [esp+262*2+16], 0 |
1051 | @@: |
1054 | @@: |
1052 | mov edi, eax |
1055 | mov edi, eax |
1053 | shl edi, 9 |
1056 | shl edi, 9 |
1054 | add edi, [_rd_base] |
1057 | add edi, [_rd_base] |
1055 | push eax |
1058 | push eax |
1056 | .do_bdfe: |
1059 | .do_bdfe: |
1057 | inc dword [edx+8] ; new file found |
1060 | inc dword [edx+8] ; new file found |
1058 | dec ebx |
1061 | dec ebx |
1059 | jns .l2 |
1062 | jns .l2 |
1060 | dec ecx |
1063 | dec ecx |
1061 | js .l2 |
1064 | js .l2 |
1062 | inc dword [edx+4] ; new file block copied |
1065 | inc dword [edx+4] ; new file block copied |
1063 | call fat_entry_to_bdfe |
1066 | call fat_entry_to_bdfe |
1064 | .l2: |
1067 | .l2: |
1065 | add edi, 0x20 |
1068 | add edi, 0x20 |
1066 | test edi, 0x1FF |
1069 | test edi, 0x1FF |
1067 | jnz .l1 |
1070 | jnz .l1 |
1068 | pop eax |
1071 | pop eax |
1069 | inc eax |
1072 | inc eax |
1070 | dec byte [esp+262*2+16] |
1073 | dec byte [esp+262*2+16] |
1071 | jz .done |
1074 | jz .done |
1072 | jns @f |
1075 | jns @f |
1073 | ; read next sector from FAT |
1076 | ; read next sector from FAT |
1074 | mov eax, [(eax-31-1)*2+RAMDISK_FAT] |
1077 | mov eax, [(eax-31-1)*2+RAMDISK_FAT] |
1075 | and eax, 0xFFF |
1078 | and eax, 0xFFF |
1076 | cmp eax, 0xFF8 |
1079 | cmp eax, 0xFF8 |
1077 | jae .done |
1080 | jae .done |
1078 | add eax, 31 |
1081 | add eax, 31 |
1079 | mov byte [esp+262*2+16], 0 |
1082 | mov byte [esp+262*2+16], 0 |
1080 | @@: |
1083 | @@: |
1081 | jmp .main_loop |
1084 | jmp .main_loop |
1082 | .done: |
1085 | .done: |
1083 | add esp, 262*2+4 |
1086 | add esp, 262*2+4 |
1084 | pop ebp |
1087 | pop ebp |
1085 | mov ebx, [edx+4] |
1088 | mov ebx, [edx+4] |
1086 | xor eax, eax |
1089 | xor eax, eax |
1087 | dec ecx |
1090 | dec ecx |
1088 | js @f |
1091 | js @f |
1089 | mov al, ERROR_END_OF_FILE |
1092 | mov al, ERROR_END_OF_FILE |
1090 | @@: |
1093 | @@: |
1091 | pop ecx esi edi edi |
1094 | pop ecx esi edi edi |
1092 | ret |
1095 | ret |
1093 | 1096 | ||
1094 | iglobal |
1097 | iglobal |
1095 | label fat_legal_chars byte |
1098 | label fat_legal_chars byte |
1096 | ; 0 = not allowed |
1099 | ; 0 = not allowed |
1097 | ; 1 = allowed only in long names |
1100 | ; 1 = allowed only in long names |
1098 | ; 3 = allowed |
1101 | ; 3 = allowed |
1099 | times 32 db 0 |
1102 | times 32 db 0 |
1100 | ; ! " # $ % & ' ( ) * + , - . / |
1103 | ; ! " # $ % & ' ( ) * + , - . / |
1101 | db 1,3,0,3,3,3,3,3,3,3,0,1,1,3,3,0 |
1104 | db 1,3,0,3,3,3,3,3,3,3,0,1,1,3,3,0 |
1102 | ; 0 1 2 3 4 5 6 7 8 9 : ; < = > ? |
1105 | ; 0 1 2 3 4 5 6 7 8 9 : ; < = > ? |
1103 | db 3,3,3,3,3,3,3,3,3,3,0,1,0,1,0,0 |
1106 | db 3,3,3,3,3,3,3,3,3,3,0,1,0,1,0,0 |
1104 | ; @ A B C D E F G H I J K L M N O |
1107 | ; @ A B C D E F G H I J K L M N O |
1105 | db 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3 |
1108 | db 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3 |
1106 | ; P Q R S T U V W X Y Z [ \ ] ^ _ |
1109 | ; P Q R S T U V W X Y Z [ \ ] ^ _ |
1107 | db 3,3,3,3,3,3,3,3,3,3,3,1,0,1,3,3 |
1110 | db 3,3,3,3,3,3,3,3,3,3,3,1,0,1,3,3 |
1108 | ; ` a b c d e f g h i j k l m n o |
1111 | ; ` a b c d e f g h i j k l m n o |
1109 | db 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3 |
1112 | db 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3 |
1110 | ; p q r s t u v w x y z { | } ~ |
1113 | ; p q r s t u v w x y z { | } ~ |
1111 | db 3,3,3,3,3,3,3,3,3,3,3,3,0,3,3,0 |
1114 | db 3,3,3,3,3,3,3,3,3,3,3,3,0,3,3,0 |
1112 | endg |
1115 | endg |
1113 | 1116 | ||
1114 | fat_name_is_legal: |
1117 | fat_name_is_legal: |
1115 | ; in: esi->(long) name |
1118 | ; in: esi->(long) name |
1116 | ; out: CF set <=> legal |
1119 | ; out: CF set <=> legal |
1117 | ; destroys eax |
1120 | ; destroys eax |
1118 | push esi |
1121 | push esi |
1119 | xor eax, eax |
1122 | xor eax, eax |
1120 | @@: |
1123 | @@: |
1121 | lodsb |
1124 | lodsb |
1122 | test al, al |
1125 | test al, al |
1123 | jz .done |
1126 | jz .done |
1124 | cmp al, 80h |
1127 | cmp al, 80h |
1125 | jae .big |
1128 | jae .big |
1126 | test [fat_legal_chars+eax], 1 |
1129 | test [fat_legal_chars+eax], 1 |
1127 | jnz @b |
1130 | jnz @b |
1128 | .err: |
1131 | .err: |
1129 | pop esi |
1132 | pop esi |
1130 | clc |
1133 | clc |
1131 | ret |
1134 | ret |
1132 | .big: |
1135 | .big: |
1133 | ; 0x80-0xAF, 0xE0-0xEF |
1136 | ; 0x80-0xAF, 0xE0-0xEF |
1134 | cmp al, 0xB0 |
1137 | cmp al, 0xB0 |
1135 | jb @b |
1138 | jb @b |
1136 | cmp al, 0xE0 |
1139 | cmp al, 0xE0 |
1137 | jb .err |
1140 | jb .err |
1138 | cmp al, 0xF0 |
1141 | cmp al, 0xF0 |
1139 | jb @b |
1142 | jb @b |
1140 | jmp .err |
1143 | jmp .err |
1141 | .done: |
1144 | .done: |
1142 | sub esi, [esp] |
1145 | sub esi, [esp] |
1143 | cmp esi, 257 |
1146 | cmp esi, 257 |
1144 | pop esi |
1147 | pop esi |
1145 | ret |
1148 | ret |
1146 | 1149 | ||
1147 | fat_next_short_name: |
1150 | fat_next_short_name: |
1148 | ; in: edi->8+3 name |
1151 | ; in: edi->8+3 name |
1149 | ; out: name corrected |
1152 | ; out: name corrected |
1150 | ; CF=1 <=> error |
1153 | ; CF=1 <=> error |
1151 | pushad |
1154 | pushad |
1152 | mov ecx, 8 |
1155 | mov ecx, 8 |
1153 | mov al, '~' |
1156 | mov al, '~' |
1154 | std |
1157 | std |
1155 | push edi |
1158 | push edi |
1156 | add edi, 7 |
1159 | add edi, 7 |
1157 | repnz scasb |
1160 | repnz scasb |
1158 | pop edi |
1161 | pop edi |
1159 | cld |
1162 | cld |
1160 | jz .tilde |
1163 | jz .tilde |
1161 | ; tilde is not found, insert "~1" at end |
1164 | ; tilde is not found, insert "~1" at end |
1162 | add edi, 6 |
1165 | add edi, 6 |
1163 | cmp word [edi], ' ' |
1166 | cmp word [edi], ' ' |
1164 | jnz .insert_tilde |
1167 | jnz .insert_tilde |
1165 | @@: dec edi |
1168 | @@: dec edi |
1166 | cmp byte [edi], ' ' |
1169 | cmp byte [edi], ' ' |
1167 | jz @b |
1170 | jz @b |
1168 | inc edi |
1171 | inc edi |
1169 | .insert_tilde: |
1172 | .insert_tilde: |
1170 | mov word [edi], '~1' |
1173 | mov word [edi], '~1' |
1171 | popad |
1174 | popad |
1172 | clc |
1175 | clc |
1173 | ret |
1176 | ret |
1174 | .tilde: |
1177 | .tilde: |
1175 | push edi |
1178 | push edi |
1176 | add edi, 7 |
1179 | add edi, 7 |
1177 | xor ecx, ecx |
1180 | xor ecx, ecx |
1178 | @@: |
1181 | @@: |
1179 | ; after tilde may be only digits and trailing spaces |
1182 | ; after tilde may be only digits and trailing spaces |
1180 | cmp byte [edi], '~' |
1183 | cmp byte [edi], '~' |
1181 | jz .break |
1184 | jz .break |
1182 | cmp byte [edi], ' ' |
1185 | cmp byte [edi], ' ' |
1183 | jz .space |
1186 | jz .space |
1184 | cmp byte [edi], '9' |
1187 | cmp byte [edi], '9' |
1185 | jnz .found |
1188 | jnz .found |
1186 | dec edi |
1189 | dec edi |
1187 | jmp @b |
1190 | jmp @b |
1188 | .space: |
1191 | .space: |
1189 | dec edi |
1192 | dec edi |
1190 | inc ecx |
1193 | inc ecx |
1191 | jmp @b |
1194 | jmp @b |
1192 | .found: |
1195 | .found: |
1193 | inc byte [edi] |
1196 | inc byte [edi] |
1194 | add dword [esp], 8 |
1197 | add dword [esp], 8 |
1195 | jmp .zerorest |
1198 | jmp .zerorest |
1196 | .break: |
1199 | .break: |
1197 | jecxz .noplace |
1200 | jecxz .noplace |
1198 | inc edi |
1201 | inc edi |
1199 | mov al, '1' |
1202 | mov al, '1' |
1200 | @@: |
1203 | @@: |
1201 | xchg al, [edi] |
1204 | xchg al, [edi] |
1202 | inc edi |
1205 | inc edi |
1203 | cmp al, ' ' |
1206 | cmp al, ' ' |
1204 | mov al, '0' |
1207 | mov al, '0' |
1205 | jnz @b |
1208 | jnz @b |
1206 | .succ: |
1209 | .succ: |
1207 | pop edi |
1210 | pop edi |
1208 | popad |
1211 | popad |
1209 | clc |
1212 | clc |
1210 | ret |
1213 | ret |
1211 | .noplace: |
1214 | .noplace: |
1212 | dec edi |
1215 | dec edi |
1213 | cmp edi, [esp] |
1216 | cmp edi, [esp] |
1214 | jz .err |
1217 | jz .err |
1215 | add dword [esp], 8 |
1218 | add dword [esp], 8 |
1216 | mov word [edi], '~1' |
1219 | mov word [edi], '~1' |
1217 | inc edi |
1220 | inc edi |
1218 | inc edi |
1221 | inc edi |
1219 | @@: |
1222 | @@: |
1220 | mov byte [edi], '0' |
1223 | mov byte [edi], '0' |
1221 | .zerorest: |
1224 | .zerorest: |
1222 | inc edi |
1225 | inc edi |
1223 | cmp edi, [esp] |
1226 | cmp edi, [esp] |
1224 | jb @b |
1227 | jb @b |
1225 | pop edi |
1228 | pop edi |
1226 | popad |
1229 | popad |
1227 | ;clc ; automatically |
1230 | ;clc ; automatically |
1228 | ret |
1231 | ret |
1229 | .err: |
1232 | .err: |
1230 | pop edi |
1233 | pop edi |
1231 | popad |
1234 | popad |
1232 | stc |
1235 | stc |
1233 | ret |
1236 | ret |
1234 | 1237 | ||
1235 | fat_gen_short_name: |
1238 | fat_gen_short_name: |
1236 | ; in: esi->long name |
1239 | ; in: esi->long name |
1237 | ; edi->buffer (8+3=11 chars) |
1240 | ; edi->buffer (8+3=11 chars) |
1238 | ; out: buffer filled |
1241 | ; out: buffer filled |
1239 | pushad |
1242 | pushad |
1240 | mov eax, ' ' |
1243 | mov eax, ' ' |
1241 | push edi |
1244 | push edi |
1242 | stosd |
1245 | stosd |
1243 | stosd |
1246 | stosd |
1244 | stosd |
1247 | stosd |
1245 | pop edi |
1248 | pop edi |
1246 | xor eax, eax |
1249 | xor eax, eax |
1247 | push 8 |
1250 | push 8 |
1248 | pop ebx |
1251 | pop ebx |
1249 | lea ecx, [edi+8] |
1252 | lea ecx, [edi+8] |
1250 | .loop: |
1253 | .loop: |
1251 | lodsb |
1254 | lodsb |
1252 | test al, al |
1255 | test al, al |
1253 | jz .done |
1256 | jz .done |
1254 | call char_toupper |
1257 | call char_toupper |
1255 | cmp al, ' ' |
1258 | cmp al, ' ' |
1256 | jz .space |
1259 | jz .space |
1257 | cmp al, 80h |
1260 | cmp al, 80h |
1258 | ja .big |
1261 | ja .big |
1259 | test [fat_legal_chars+eax], 2 |
1262 | test [fat_legal_chars+eax], 2 |
1260 | jnz .symbol |
1263 | jnz .symbol |
1261 | .inv_symbol: |
1264 | .inv_symbol: |
1262 | mov al, '_' |
1265 | mov al, '_' |
1263 | or bh, 1 |
1266 | or bh, 1 |
1264 | .symbol: |
1267 | .symbol: |
1265 | cmp al, '.' |
1268 | cmp al, '.' |
1266 | jz .dot |
1269 | jz .dot |
1267 | .normal_symbol: |
1270 | .normal_symbol: |
1268 | dec bl |
1271 | dec bl |
1269 | jns .store |
1272 | jns .store |
1270 | mov bl, 0 |
1273 | mov bl, 0 |
1271 | .space: |
1274 | .space: |
1272 | or bh, 1 |
1275 | or bh, 1 |
1273 | jmp .loop |
1276 | jmp .loop |
1274 | .store: |
1277 | .store: |
1275 | stosb |
1278 | stosb |
1276 | jmp .loop |
1279 | jmp .loop |
1277 | .big: |
1280 | .big: |
1278 | cmp al, 0xB0 |
1281 | cmp al, 0xB0 |
1279 | jb .normal_symbol |
1282 | jb .normal_symbol |
1280 | cmp al, 0xE0 |
1283 | cmp al, 0xE0 |
1281 | jb .inv_symbol |
1284 | jb .inv_symbol |
1282 | cmp al, 0xF0 |
1285 | cmp al, 0xF0 |
1283 | jb .normal_symbol |
1286 | jb .normal_symbol |
1284 | jmp .inv_symbol |
1287 | jmp .inv_symbol |
1285 | .dot: |
1288 | .dot: |
1286 | test bh, 2 |
1289 | test bh, 2 |
1287 | jz .firstdot |
1290 | jz .firstdot |
1288 | pop ebx |
1291 | pop ebx |
1289 | add ebx, edi |
1292 | add ebx, edi |
1290 | sub ebx, ecx |
1293 | sub ebx, ecx |
1291 | push ebx |
1294 | push ebx |
1292 | cmp ebx, ecx |
1295 | cmp ebx, ecx |
1293 | jb @f |
1296 | jb @f |
1294 | pop ebx |
1297 | pop ebx |
1295 | push ecx |
1298 | push ecx |
1296 | @@: |
1299 | @@: |
1297 | cmp edi, ecx |
1300 | cmp edi, ecx |
1298 | jbe .skip |
1301 | jbe .skip |
1299 | @@: |
1302 | @@: |
1300 | dec edi |
1303 | dec edi |
1301 | mov al, [edi] |
1304 | mov al, [edi] |
1302 | dec ebx |
1305 | dec ebx |
1303 | mov [ebx], al |
1306 | mov [ebx], al |
1304 | mov byte [edi], ' ' |
1307 | mov byte [edi], ' ' |
1305 | cmp edi, ecx |
1308 | cmp edi, ecx |
1306 | ja @b |
1309 | ja @b |
1307 | .skip: |
1310 | .skip: |
1308 | mov bh, 3 |
1311 | mov bh, 3 |
1309 | jmp @f |
1312 | jmp @f |
1310 | .firstdot: |
1313 | .firstdot: |
1311 | cmp bl, 8 |
1314 | cmp bl, 8 |
1312 | jz .space |
1315 | jz .space |
1313 | push edi |
1316 | push edi |
1314 | or bh, 2 |
1317 | or bh, 2 |
1315 | @@: |
1318 | @@: |
1316 | mov edi, ecx |
1319 | mov edi, ecx |
1317 | mov bl, 3 |
1320 | mov bl, 3 |
1318 | jmp .loop |
1321 | jmp .loop |
1319 | .done: |
1322 | .done: |
1320 | test bh, 2 |
1323 | test bh, 2 |
1321 | jz @f |
1324 | jz @f |
1322 | pop edi |
1325 | pop edi |
1323 | @@: |
1326 | @@: |
1324 | lea edi, [ecx-8] |
1327 | lea edi, [ecx-8] |
1325 | test bh, 1 |
1328 | test bh, 1 |
1326 | jz @f |
1329 | jz @f |
1327 | call fat_next_short_name |
1330 | call fat_next_short_name |
1328 | @@: |
1331 | @@: |
1329 | popad |
1332 | popad |
1330 | ret |
1333 | ret |
1331 | 1334 | ||
1332 | ;---------------------------------------------------------------- |
1335 | ;---------------------------------------------------------------- |
1333 | ; |
1336 | ; |
1334 | ; fs_RamdiskRewrite - LFN variant for writing ramdisk |
1337 | ; fs_RamdiskRewrite - LFN variant for writing ramdisk |
1335 | ; fs_RamdiskCreateFolder - create folder on ramdisk |
1338 | ; fs_RamdiskCreateFolder - create folder on ramdisk |
1336 | ; |
1339 | ; |
1337 | ; esi points to file/folder name |
1340 | ; esi points to file/folder name |
1338 | ; ebx ignored (reserved) |
1341 | ; ebx ignored (reserved) |
1339 | ; ecx number of bytes to write, 0+ (ignored for folders) |
1342 | ; ecx number of bytes to write, 0+ (ignored for folders) |
1340 | ; edx mem location to data (ignored for folders) |
1343 | ; edx mem location to data (ignored for folders) |
1341 | ; |
1344 | ; |
1342 | ; ret ebx = number of written bytes |
1345 | ; ret ebx = number of written bytes |
1343 | ; eax = 0 ok read or other = errormsg |
1346 | ; eax = 0 ok read or other = errormsg |
1344 | ; |
1347 | ; |
1345 | ;-------------------------------------------------------------- |
1348 | ;-------------------------------------------------------------- |
1346 | @@: |
1349 | @@: |
1347 | mov eax, ERROR_ACCESS_DENIED |
1350 | mov eax, ERROR_ACCESS_DENIED |
1348 | xor ebx, ebx |
1351 | xor ebx, ebx |
1349 | ret |
1352 | ret |
1350 | 1353 | ||
1351 | fs_RamdiskCreateFolder: |
1354 | fs_RamdiskCreateFolder: |
1352 | mov al, 1 ; create folder |
1355 | mov al, 1 ; create folder |
1353 | jmp fs_RamdiskRewrite.common |
1356 | jmp fs_RamdiskRewrite.common |
1354 | 1357 | ||
1355 | fs_RamdiskRewrite: |
1358 | fs_RamdiskRewrite: |
1356 | xor eax, eax ; create file |
1359 | xor eax, eax ; create file |
1357 | .common: |
1360 | .common: |
1358 | cmp byte [esi], 0 |
1361 | cmp byte [esi], 0 |
1359 | jz @b |
1362 | jz @b |
1360 | pushad |
1363 | pushad |
1361 | xor edi, edi |
1364 | xor edi, edi |
1362 | push esi |
1365 | push esi |
1363 | test ebp, ebp |
1366 | test ebp, ebp |
1364 | jz @f |
1367 | jz @f |
1365 | mov esi, ebp |
1368 | mov esi, ebp |
1366 | @@: |
1369 | @@: |
1367 | lodsb |
1370 | lodsb |
1368 | test al, al |
1371 | test al, al |
1369 | jz @f |
1372 | jz @f |
1370 | cmp al, '/' |
1373 | cmp al, '/' |
1371 | jnz @b |
1374 | jnz @b |
1372 | lea edi, [esi-1] |
1375 | lea edi, [esi-1] |
1373 | jmp @b |
1376 | jmp @b |
1374 | @@: |
1377 | @@: |
1375 | pop esi |
1378 | pop esi |
1376 | test edi, edi |
1379 | test edi, edi |
1377 | jnz .noroot |
1380 | jnz .noroot |
1378 | test ebp, ebp |
1381 | test ebp, ebp |
1379 | jnz .hasebp |
1382 | jnz .hasebp |
1380 | push ramdisk_root_extend_dir |
1383 | push ramdisk_root_extend_dir |
1381 | push ramdisk_root_next_write |
1384 | push ramdisk_root_next_write |
1382 | push edi |
1385 | push edi |
1383 | push ramdisk_root_first |
1386 | push ramdisk_root_first |
1384 | push ramdisk_root_next |
1387 | push ramdisk_root_next |
1385 | jmp .common1 |
1388 | jmp .common1 |
1386 | .hasebp: |
1389 | .hasebp: |
1387 | mov eax, ERROR_ACCESS_DENIED |
1390 | mov eax, ERROR_ACCESS_DENIED |
1388 | cmp byte [ebp], 0 |
1391 | cmp byte [ebp], 0 |
1389 | jz .ret1 |
1392 | jz .ret1 |
1390 | push ebp |
1393 | push ebp |
1391 | xor ebp, ebp |
1394 | xor ebp, ebp |
1392 | call rd_find_lfn |
1395 | call rd_find_lfn |
1393 | pop esi |
1396 | pop esi |
1394 | jc .notfound0 |
1397 | jc .notfound0 |
1395 | jmp .common0 |
1398 | jmp .common0 |
1396 | .noroot: |
1399 | .noroot: |
1397 | mov eax, ERROR_ACCESS_DENIED |
1400 | mov eax, ERROR_ACCESS_DENIED |
1398 | cmp byte [edi+1], 0 |
1401 | cmp byte [edi+1], 0 |
1399 | jz .ret1 |
1402 | jz .ret1 |
1400 | ; check existence |
1403 | ; check existence |
1401 | mov byte [edi], 0 |
1404 | mov byte [edi], 0 |
1402 | push edi |
1405 | push edi |
1403 | call rd_find_lfn |
1406 | call rd_find_lfn |
1404 | pop esi |
1407 | pop esi |
1405 | mov byte [esi], '/' |
1408 | mov byte [esi], '/' |
1406 | jnc @f |
1409 | jnc @f |
1407 | .notfound0: |
1410 | .notfound0: |
1408 | mov eax, ERROR_FILE_NOT_FOUND |
1411 | mov eax, ERROR_FILE_NOT_FOUND |
1409 | .ret1: |
1412 | .ret1: |
1410 | mov [esp+28], eax |
1413 | mov [esp+28], eax |
1411 | popad |
1414 | popad |
1412 | xor ebx, ebx |
1415 | xor ebx, ebx |
1413 | ret |
1416 | ret |
1414 | @@: |
1417 | @@: |
1415 | inc esi |
1418 | inc esi |
1416 | .common0: |
1419 | .common0: |
1417 | test byte [edi+11], 0x10 ; must be directory |
1420 | test byte [edi+11], 0x10 ; must be directory |
1418 | mov eax, ERROR_ACCESS_DENIED |
1421 | mov eax, ERROR_ACCESS_DENIED |
1419 | jz .ret1 |
1422 | jz .ret1 |
1420 | movzx ebp, word [edi+26] ; ebp=cluster |
1423 | movzx ebp, word [edi+26] ; ebp=cluster |
1421 | mov eax, ERROR_FAT_TABLE |
1424 | mov eax, ERROR_FAT_TABLE |
1422 | cmp ebp, 2 |
1425 | cmp ebp, 2 |
1423 | jb .ret1 |
1426 | jb .ret1 |
1424 | cmp ebp, 2849 |
1427 | cmp ebp, 2849 |
1425 | jae .ret1 |
1428 | jae .ret1 |
1426 | push ramdisk_notroot_extend_dir |
1429 | push ramdisk_notroot_extend_dir |
1427 | push ramdisk_notroot_next_write |
1430 | push ramdisk_notroot_next_write |
1428 | push ebp |
1431 | push ebp |
1429 | push ramdisk_notroot_first |
1432 | push ramdisk_notroot_first |
1430 | push ramdisk_notroot_next |
1433 | push ramdisk_notroot_next |
1431 | .common1: |
1434 | .common1: |
1432 | call fat_find_lfn |
1435 | call fat_find_lfn |
1433 | jc .notfound |
1436 | jc .notfound |
1434 | ; found |
1437 | ; found |
1435 | test byte [edi+11], 10h |
1438 | test byte [edi+11], 10h |
1436 | jz .exists_file |
1439 | jz .exists_file |
1437 | ; found directory; if we are creating directory, return OK, |
1440 | ; found directory; if we are creating directory, return OK, |
1438 | ; if we are creating file, say "access denied" |
1441 | ; if we are creating file, say "access denied" |
1439 | add esp, 20 |
1442 | add esp, 20 |
1440 | popad |
1443 | popad |
1441 | test al, al |
1444 | test al, al |
1442 | mov eax, ERROR_ACCESS_DENIED |
1445 | mov eax, ERROR_ACCESS_DENIED |
1443 | jz @f |
1446 | jz @f |
1444 | mov al, 0 |
1447 | mov al, 0 |
1445 | @@: |
1448 | @@: |
1446 | xor ebx, ebx |
1449 | xor ebx, ebx |
1447 | ret |
1450 | ret |
1448 | .exists_file: |
1451 | .exists_file: |
1449 | ; found file; if we are creating directory, return "access denied", |
1452 | ; found file; if we are creating directory, return "access denied", |
1450 | ; if we are creating file, delete existing file and continue |
1453 | ; if we are creating file, delete existing file and continue |
1451 | cmp byte [esp+20+28], 0 |
1454 | cmp byte [esp+20+28], 0 |
1452 | jz @f |
1455 | jz @f |
1453 | add esp, 20 |
1456 | add esp, 20 |
1454 | popad |
1457 | popad |
1455 | mov eax, ERROR_ACCESS_DENIED |
1458 | mov eax, ERROR_ACCESS_DENIED |
1456 | xor ebx, ebx |
1459 | xor ebx, ebx |
1457 | ret |
1460 | ret |
1458 | @@: |
1461 | @@: |
1459 | ; delete FAT chain |
1462 | ; delete FAT chain |
1460 | push edi |
1463 | push edi |
1461 | xor eax, eax |
1464 | xor eax, eax |
1462 | mov dword [edi+28], eax ; zero size |
1465 | mov dword [edi+28], eax ; zero size |
1463 | xchg ax, word [edi+26] ; start cluster |
1466 | xchg ax, word [edi+26] ; start cluster |
1464 | test eax, eax |
1467 | test eax, eax |
1465 | jz .done1 |
1468 | jz .done1 |
1466 | @@: |
1469 | @@: |
1467 | cmp eax, 0xFF8 |
1470 | cmp eax, 0xFF8 |
1468 | jae .done1 |
1471 | jae .done1 |
1469 | lea edi, [RAMDISK_FAT + eax*2] ; position in FAT |
1472 | lea edi, [RAMDISK_FAT + eax*2] ; position in FAT |
1470 | xor eax, eax |
1473 | xor eax, eax |
1471 | xchg ax, [edi] |
1474 | xchg ax, [edi] |
1472 | jmp @b |
1475 | jmp @b |
1473 | .done1: |
1476 | .done1: |
1474 | pop edi |
1477 | pop edi |
1475 | call get_time_for_file |
1478 | call get_time_for_file |
1476 | mov [edi+22], ax |
1479 | mov [edi+22], ax |
1477 | call get_date_for_file |
1480 | call get_date_for_file |
1478 | mov [edi+24], ax |
1481 | mov [edi+24], ax |
1479 | mov [edi+18], ax |
1482 | mov [edi+18], ax |
1480 | or byte [edi+11], 20h ; set 'archive' attribute |
1483 | or byte [edi+11], 20h ; set 'archive' attribute |
1481 | jmp .doit |
1484 | jmp .doit |
1482 | .notfound: |
1485 | .notfound: |
1483 | ; file is not found; generate short name |
1486 | ; file is not found; generate short name |
1484 | call fat_name_is_legal |
1487 | call fat_name_is_legal |
1485 | jc @f |
1488 | jc @f |
1486 | add esp, 20 |
1489 | add esp, 20 |
1487 | popad |
1490 | popad |
1488 | mov eax, ERROR_FILE_NOT_FOUND |
1491 | mov eax, ERROR_FILE_NOT_FOUND |
1489 | xor ebx, ebx |
1492 | xor ebx, ebx |
1490 | ret |
1493 | ret |
1491 | @@: |
1494 | @@: |
1492 | sub esp, 12 |
1495 | sub esp, 12 |
1493 | mov edi, esp |
1496 | mov edi, esp |
1494 | call fat_gen_short_name |
1497 | call fat_gen_short_name |
1495 | .test_short_name_loop: |
1498 | .test_short_name_loop: |
1496 | push esi edi ecx |
1499 | push esi edi ecx |
1497 | mov esi, edi |
1500 | mov esi, edi |
1498 | lea eax, [esp+12+12+8] |
1501 | lea eax, [esp+12+12+8] |
1499 | mov [eax], ebp |
1502 | mov [eax], ebp |
1500 | call dword [eax-4] |
1503 | call dword [eax-4] |
1501 | jc .found |
1504 | jc .found |
1502 | .test_short_name_entry: |
1505 | .test_short_name_entry: |
1503 | cmp byte [edi+11], 0xF |
1506 | cmp byte [edi+11], 0xF |
1504 | jz .test_short_name_cont |
1507 | jz .test_short_name_cont |
1505 | mov ecx, 11 |
1508 | mov ecx, 11 |
1506 | push esi edi |
1509 | push esi edi |
1507 | repz cmpsb |
1510 | repz cmpsb |
1508 | pop edi esi |
1511 | pop edi esi |
1509 | jz .short_name_found |
1512 | jz .short_name_found |
1510 | .test_short_name_cont: |
1513 | .test_short_name_cont: |
1511 | lea eax, [esp+12+12+8] |
1514 | lea eax, [esp+12+12+8] |
1512 | call dword [eax-8] |
1515 | call dword [eax-8] |
1513 | jnc .test_short_name_entry |
1516 | jnc .test_short_name_entry |
1514 | jmp .found |
1517 | jmp .found |
1515 | .short_name_found: |
1518 | .short_name_found: |
1516 | pop ecx edi esi |
1519 | pop ecx edi esi |
1517 | call fat_next_short_name |
1520 | call fat_next_short_name |
1518 | jnc .test_short_name_loop |
1521 | jnc .test_short_name_loop |
1519 | .disk_full: |
1522 | .disk_full: |
1520 | add esp, 12+20 |
1523 | add esp, 12+20 |
1521 | popad |
1524 | popad |
1522 | mov eax, ERROR_DISK_FULL |
1525 | mov eax, ERROR_DISK_FULL |
1523 | xor ebx, ebx |
1526 | xor ebx, ebx |
1524 | ret |
1527 | ret |
1525 | .found: |
1528 | .found: |
1526 | pop ecx edi esi |
1529 | pop ecx edi esi |
1527 | ; now find space in directory |
1530 | ; now find space in directory |
1528 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
1531 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
1529 | mov al, '~' |
1532 | mov al, '~' |
1530 | push ecx edi |
1533 | push ecx edi |
1531 | mov ecx, 8 |
1534 | mov ecx, 8 |
1532 | repnz scasb |
1535 | repnz scasb |
1533 | push 1 |
1536 | push 1 |
1534 | pop eax ; 1 entry |
1537 | pop eax ; 1 entry |
1535 | jnz .notilde |
1538 | jnz .notilde |
1536 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
1539 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
1537 | xor eax, eax |
1540 | xor eax, eax |
1538 | @@: |
1541 | @@: |
1539 | cmp byte [esi], 0 |
1542 | cmp byte [esi], 0 |
1540 | jz @f |
1543 | jz @f |
1541 | inc esi |
1544 | inc esi |
1542 | inc eax |
1545 | inc eax |
1543 | jmp @b |
1546 | jmp @b |
1544 | @@: |
1547 | @@: |
1545 | sub esi, eax |
1548 | sub esi, eax |
1546 | add eax, 12+13 |
1549 | add eax, 12+13 |
1547 | mov ecx, 13 |
1550 | mov ecx, 13 |
1548 | push edx |
1551 | push edx |
1549 | cdq |
1552 | cdq |
1550 | div ecx |
1553 | div ecx |
1551 | pop edx |
1554 | pop edx |
1552 | .notilde: |
1555 | .notilde: |
1553 | push -1 |
1556 | push -1 |
1554 | push -1 |
1557 | push -1 |
1555 | ; find |
1558 | ; find |
1556 | xor ecx, ecx |
1559 | xor ecx, ecx |
1557 | push eax |
1560 | push eax |
1558 | lea eax, [esp+12+8+12+8] |
1561 | lea eax, [esp+12+8+12+8] |
1559 | mov [eax], ebp |
1562 | mov [eax], ebp |
1560 | call dword [eax-4] |
1563 | call dword [eax-4] |
1561 | pop eax |
1564 | pop eax |
1562 | .scan_dir: |
1565 | .scan_dir: |
1563 | cmp byte [edi], 0 |
1566 | cmp byte [edi], 0 |
1564 | jz .free |
1567 | jz .free |
1565 | cmp byte [edi], 0xE5 |
1568 | cmp byte [edi], 0xE5 |
1566 | jz .free |
1569 | jz .free |
1567 | xor ecx, ecx |
1570 | xor ecx, ecx |
1568 | .scan_cont: |
1571 | .scan_cont: |
1569 | push eax |
1572 | push eax |
1570 | lea eax, [esp+12+8+12+8] |
1573 | lea eax, [esp+12+8+12+8] |
1571 | call dword [eax-8] |
1574 | call dword [eax-8] |
1572 | pop eax |
1575 | pop eax |
1573 | jnc .scan_dir |
1576 | jnc .scan_dir |
1574 | push eax |
1577 | push eax |
1575 | lea eax, [esp+12+8+12+8] |
1578 | lea eax, [esp+12+8+12+8] |
1576 | call dword [eax+8] ; extend directory |
1579 | call dword [eax+8] ; extend directory |
1577 | pop eax |
1580 | pop eax |
1578 | jnc .scan_dir |
1581 | jnc .scan_dir |
1579 | add esp, 8+8+12+20 |
1582 | add esp, 8+8+12+20 |
1580 | popad |
1583 | popad |
1581 | mov eax, ERROR_DISK_FULL |
1584 | mov eax, ERROR_DISK_FULL |
1582 | xor ebx, ebx |
1585 | xor ebx, ebx |
1583 | ret |
1586 | ret |
1584 | .free: |
1587 | .free: |
1585 | test ecx, ecx |
1588 | test ecx, ecx |
1586 | jnz @f |
1589 | jnz @f |
1587 | mov [esp], edi |
1590 | mov [esp], edi |
1588 | mov ecx, [esp+8+8+12+8] |
1591 | mov ecx, [esp+8+8+12+8] |
1589 | mov [esp+4], ecx |
1592 | mov [esp+4], ecx |
1590 | xor ecx, ecx |
1593 | xor ecx, ecx |
1591 | @@: |
1594 | @@: |
1592 | inc ecx |
1595 | inc ecx |
1593 | cmp ecx, eax |
1596 | cmp ecx, eax |
1594 | jb .scan_cont |
1597 | jb .scan_cont |
1595 | ; found! |
1598 | ; found! |
1596 | ; calculate name checksum |
1599 | ; calculate name checksum |
1597 | push esi ecx |
1600 | push esi ecx |
1598 | mov esi, [esp+8+8] |
1601 | mov esi, [esp+8+8] |
1599 | mov ecx, 11 |
1602 | mov ecx, 11 |
1600 | xor eax, eax |
1603 | xor eax, eax |
1601 | @@: |
1604 | @@: |
1602 | ror al, 1 |
1605 | ror al, 1 |
1603 | add al, [esi] |
1606 | add al, [esi] |
1604 | inc esi |
1607 | inc esi |
1605 | loop @b |
1608 | loop @b |
1606 | pop ecx esi |
1609 | pop ecx esi |
1607 | pop edi |
1610 | pop edi |
1608 | pop dword [esp+8+12+8] |
1611 | pop dword [esp+8+12+8] |
1609 | ; edi points to last entry in free chunk |
1612 | ; edi points to last entry in free chunk |
1610 | dec ecx |
1613 | dec ecx |
1611 | jz .nolfn |
1614 | jz .nolfn |
1612 | push esi |
1615 | push esi |
1613 | push eax |
1616 | push eax |
1614 | mov al, 40h |
1617 | mov al, 40h |
1615 | .writelfn: |
1618 | .writelfn: |
1616 | or al, cl |
1619 | or al, cl |
1617 | mov esi, [esp+4] |
1620 | mov esi, [esp+4] |
1618 | push ecx |
1621 | push ecx |
1619 | dec ecx |
1622 | dec ecx |
1620 | imul ecx, 13 |
1623 | imul ecx, 13 |
1621 | add esi, ecx |
1624 | add esi, ecx |
1622 | stosb |
1625 | stosb |
1623 | mov cl, 5 |
1626 | mov cl, 5 |
1624 | call .read_symbols |
1627 | call .read_symbols |
1625 | mov ax, 0xF |
1628 | mov ax, 0xF |
1626 | stosw |
1629 | stosw |
1627 | mov al, [esp+4] |
1630 | mov al, [esp+4] |
1628 | stosb |
1631 | stosb |
1629 | mov cl, 6 |
1632 | mov cl, 6 |
1630 | call .read_symbols |
1633 | call .read_symbols |
1631 | xor eax, eax |
1634 | xor eax, eax |
1632 | stosw |
1635 | stosw |
1633 | mov cl, 2 |
1636 | mov cl, 2 |
1634 | call .read_symbols |
1637 | call .read_symbols |
1635 | pop ecx |
1638 | pop ecx |
1636 | lea eax, [esp+8+8+12+8] |
1639 | lea eax, [esp+8+8+12+8] |
1637 | call dword [eax+4] ; next write |
1640 | call dword [eax+4] ; next write |
1638 | xor eax, eax |
1641 | xor eax, eax |
1639 | loop .writelfn |
1642 | loop .writelfn |
1640 | pop eax |
1643 | pop eax |
1641 | pop esi |
1644 | pop esi |
1642 | .nolfn: |
1645 | .nolfn: |
1643 | xchg esi, [esp] |
1646 | xchg esi, [esp] |
1644 | mov ecx, 11 |
1647 | mov ecx, 11 |
1645 | rep movsb |
1648 | rep movsb |
1646 | mov word [edi], 20h ; attributes |
1649 | mov word [edi], 20h ; attributes |
1647 | sub edi, 11 |
1650 | sub edi, 11 |
1648 | pop esi ecx |
1651 | pop esi ecx |
1649 | add esp, 12 |
1652 | add esp, 12 |
1650 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
1653 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
1651 | call get_time_for_file |
1654 | call get_time_for_file |
1652 | mov [edi+14], ax ; creation time |
1655 | mov [edi+14], ax ; creation time |
1653 | mov [edi+22], ax ; last write time |
1656 | mov [edi+22], ax ; last write time |
1654 | call get_date_for_file |
1657 | call get_date_for_file |
1655 | mov [edi+16], ax ; creation date |
1658 | mov [edi+16], ax ; creation date |
1656 | mov [edi+24], ax ; last write date |
1659 | mov [edi+24], ax ; last write date |
1657 | mov [edi+18], ax ; last access date |
1660 | mov [edi+18], ax ; last access date |
1658 | and word [edi+20], 0 ; high word of cluster |
1661 | and word [edi+20], 0 ; high word of cluster |
1659 | and word [edi+26], 0 ; low word of cluster - to be filled |
1662 | and word [edi+26], 0 ; low word of cluster - to be filled |
1660 | and dword [edi+28], 0 ; file size - to be filled |
1663 | and dword [edi+28], 0 ; file size - to be filled |
1661 | cmp byte [esp+20+28], 0 |
1664 | cmp byte [esp+20+28], 0 |
1662 | jz .doit |
1665 | jz .doit |
1663 | ; create directory |
1666 | ; create directory |
1664 | mov byte [edi+11], 10h ; attributes: folder |
1667 | mov byte [edi+11], 10h ; attributes: folder |
1665 | mov ecx, 32*2 |
1668 | mov ecx, 32*2 |
1666 | mov edx, edi |
1669 | mov edx, edi |
1667 | .doit: |
1670 | .doit: |
1668 | push edx |
1671 | push edx |
1669 | push ecx |
1672 | push ecx |
1670 | push edi |
1673 | push edi |
1671 | add edi, 26 ; edi points to low word of cluster |
1674 | add edi, 26 ; edi points to low word of cluster |
1672 | push edi |
1675 | push edi |
1673 | jecxz .done |
1676 | jecxz .done |
1674 | mov ecx, 2849 |
1677 | mov ecx, 2849 |
1675 | mov edi, RAMDISK_FAT |
1678 | mov edi, RAMDISK_FAT |
1676 | .write_loop: |
1679 | .write_loop: |
1677 | ; allocate new cluster |
1680 | ; allocate new cluster |
1678 | xor eax, eax |
1681 | xor eax, eax |
1679 | repnz scasw |
1682 | repnz scasw |
1680 | jnz .disk_full2 |
1683 | jnz .disk_full2 |
1681 | dec edi |
1684 | dec edi |
1682 | dec edi |
1685 | dec edi |
1683 | 1686 | ||
1684 | ; lea eax, [edi-(RAMDISK_FAT)] |
1687 | ; lea eax, [edi-(RAMDISK_FAT)] |
1685 | 1688 | ||
1686 | mov eax, edi |
1689 | mov eax, edi |
1687 | sub eax, RAMDISK_FAT |
1690 | sub eax, RAMDISK_FAT |
1688 | 1691 | ||
1689 | shr eax, 1 ; eax = cluster |
1692 | shr eax, 1 ; eax = cluster |
1690 | mov word [edi], 0xFFF ; mark as last cluster |
1693 | mov word [edi], 0xFFF ; mark as last cluster |
1691 | xchg edi, [esp] |
1694 | xchg edi, [esp] |
1692 | stosw |
1695 | stosw |
1693 | pop edi |
1696 | pop edi |
1694 | push edi |
1697 | push edi |
1695 | inc ecx |
1698 | inc ecx |
1696 | ; write data |
1699 | ; write data |
1697 | cmp byte [esp+16+20+28], 0 |
1700 | cmp byte [esp+16+20+28], 0 |
1698 | jnz .writedir |
1701 | jnz .writedir |
1699 | shl eax, 9 |
1702 | shl eax, 9 |
1700 | add eax, 31*512 |
1703 | add eax, 31*512 |
1701 | add eax, [_rd_base] |
1704 | add eax, [_rd_base] |
1702 | .writefile: |
1705 | .writefile: |
1703 | mov ebx, edx |
1706 | mov ebx, edx |
1704 | xchg eax, ebx |
1707 | xchg eax, ebx |
1705 | push ecx |
1708 | push ecx |
1706 | mov ecx, 512 |
1709 | mov ecx, 512 |
1707 | cmp dword [esp+12], ecx |
1710 | cmp dword [esp+12], ecx |
1708 | jae @f |
1711 | jae @f |
1709 | mov ecx, [esp+12] |
1712 | mov ecx, [esp+12] |
1710 | @@: |
1713 | @@: |
1711 | call memmove |
1714 | call memmove |
1712 | add edx, ecx |
1715 | add edx, ecx |
1713 | sub [esp+12], ecx |
1716 | sub [esp+12], ecx |
1714 | pop ecx |
1717 | pop ecx |
1715 | jnz .write_loop |
1718 | jnz .write_loop |
1716 | .done: |
1719 | .done: |
1717 | mov ebx, edx |
1720 | mov ebx, edx |
1718 | pop edi edi ecx edx |
1721 | pop edi edi ecx edx |
1719 | sub ebx, edx |
1722 | sub ebx, edx |
1720 | mov [edi+28], ebx |
1723 | mov [edi+28], ebx |
1721 | add esp, 20 |
1724 | add esp, 20 |
1722 | mov [esp+16], ebx |
1725 | mov [esp+16], ebx |
1723 | popad |
1726 | popad |
1724 | xor eax, eax |
1727 | xor eax, eax |
1725 | ret |
1728 | ret |
1726 | .disk_full2: |
1729 | .disk_full2: |
1727 | mov ebx, edx |
1730 | mov ebx, edx |
1728 | pop edi edi ecx edx |
1731 | pop edi edi ecx edx |
1729 | sub ebx, edx |
1732 | sub ebx, edx |
1730 | mov [edi+28], ebx |
1733 | mov [edi+28], ebx |
1731 | add esp, 20 |
1734 | add esp, 20 |
1732 | mov [esp+16], ebx |
1735 | mov [esp+16], ebx |
1733 | popad |
1736 | popad |
1734 | push ERROR_DISK_FULL |
1737 | push ERROR_DISK_FULL |
1735 | pop eax |
1738 | pop eax |
1736 | ret |
1739 | ret |
1737 | .writedir: |
1740 | .writedir: |
1738 | mov edi, eax |
1741 | mov edi, eax |
1739 | shl edi, 9 |
1742 | shl edi, 9 |
1740 | add edi, [_rd_base] |
1743 | add edi, [_rd_base] |
1741 | add edi, 31*512 |
1744 | add edi, 31*512 |
1742 | mov esi, edx |
1745 | mov esi, edx |
1743 | mov ecx, 32/4 |
1746 | mov ecx, 32/4 |
1744 | push ecx |
1747 | push ecx |
1745 | rep movsd |
1748 | rep movsd |
1746 | mov dword [edi-32], '. ' |
1749 | mov dword [edi-32], '. ' |
1747 | mov dword [edi-32+4], ' ' |
1750 | mov dword [edi-32+4], ' ' |
1748 | mov dword [edi-32+8], ' ' |
1751 | mov dword [edi-32+8], ' ' |
1749 | mov byte [edi-32+11], 10h |
1752 | mov byte [edi-32+11], 10h |
1750 | mov word [edi-32+26], ax |
1753 | mov word [edi-32+26], ax |
1751 | mov esi, edx |
1754 | mov esi, edx |
1752 | pop ecx |
1755 | pop ecx |
1753 | rep movsd |
1756 | rep movsd |
1754 | mov dword [edi-32], '.. ' |
1757 | mov dword [edi-32], '.. ' |
1755 | mov dword [edi-32+4], ' ' |
1758 | mov dword [edi-32+4], ' ' |
1756 | mov dword [edi-32+8], ' ' |
1759 | mov dword [edi-32+8], ' ' |
1757 | mov byte [edi-32+11], 10h |
1760 | mov byte [edi-32+11], 10h |
1758 | mov eax, [esp+16+8] |
1761 | mov eax, [esp+16+8] |
1759 | mov word [edi-32+26], ax |
1762 | mov word [edi-32+26], ax |
1760 | xor eax, eax |
1763 | xor eax, eax |
1761 | mov ecx, (512-32*2)/4 |
1764 | mov ecx, (512-32*2)/4 |
1762 | rep stosd |
1765 | rep stosd |
1763 | pop edi edi ecx edx |
1766 | pop edi edi ecx edx |
1764 | add esp, 20 |
1767 | add esp, 20 |
1765 | popad |
1768 | popad |
1766 | xor eax, eax |
1769 | xor eax, eax |
1767 | xor ebx, ebx |
1770 | xor ebx, ebx |
1768 | ret |
1771 | ret |
1769 | 1772 | ||
1770 | .read_symbol: |
1773 | .read_symbol: |
1771 | or ax, -1 |
1774 | or ax, -1 |
1772 | test esi, esi |
1775 | test esi, esi |
1773 | jz .retFFFF |
1776 | jz .retFFFF |
1774 | lodsb |
1777 | lodsb |
1775 | test al, al |
1778 | test al, al |
1776 | jnz ansi2uni_char |
1779 | jnz ansi2uni_char |
1777 | xor eax, eax |
1780 | xor eax, eax |
1778 | xor esi, esi |
1781 | xor esi, esi |
1779 | .retFFFF: |
1782 | .retFFFF: |
1780 | ret |
1783 | ret |
1781 | 1784 | ||
1782 | .read_symbols: |
1785 | .read_symbols: |
1783 | call .read_symbol |
1786 | call .read_symbol |
1784 | stosw |
1787 | stosw |
1785 | loop .read_symbols |
1788 | loop .read_symbols |
1786 | ret |
1789 | ret |
1787 | 1790 | ||
1788 | ;---------------------------------------------------------------- |
1791 | ;---------------------------------------------------------------- |
1789 | ; |
1792 | ; |
1790 | ; fs_RamdiskWrite - LFN variant for writing to sys floppy |
1793 | ; fs_RamdiskWrite - LFN variant for writing to sys floppy |
1791 | ; |
1794 | ; |
1792 | ; esi points to filename |
1795 | ; esi points to filename |
1793 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1796 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1794 | ; may be ebx=0 - start from first byte |
1797 | ; may be ebx=0 - start from first byte |
1795 | ; ecx number of bytes to write, 0+ |
1798 | ; ecx number of bytes to write, 0+ |
1796 | ; edx mem location to data |
1799 | ; edx mem location to data |
1797 | ; |
1800 | ; |
1798 | ; ret ebx = bytes written (maybe 0) |
1801 | ; ret ebx = bytes written (maybe 0) |
1799 | ; eax = 0 ok write or other = errormsg |
1802 | ; eax = 0 ok write or other = errormsg |
1800 | ; |
1803 | ; |
1801 | ;-------------------------------------------------------------- |
1804 | ;-------------------------------------------------------------- |
1802 | @@: |
1805 | @@: |
1803 | push ERROR_ACCESS_DENIED |
1806 | push ERROR_ACCESS_DENIED |
1804 | fs_RamdiskWrite.ret0: |
1807 | fs_RamdiskWrite.ret0: |
1805 | pop eax |
1808 | pop eax |
1806 | xor ebx, ebx |
1809 | xor ebx, ebx |
1807 | ret |
1810 | ret |
1808 | 1811 | ||
1809 | fs_RamdiskWrite: |
1812 | fs_RamdiskWrite: |
1810 | cmp byte [esi], 0 |
1813 | cmp byte [esi], 0 |
1811 | jz @b |
1814 | jz @b |
1812 | pushad |
1815 | pushad |
1813 | call rd_find_lfn |
1816 | call rd_find_lfn |
1814 | jnc .found |
1817 | jnc .found |
1815 | popad |
1818 | popad |
1816 | push ERROR_FILE_NOT_FOUND |
1819 | push ERROR_FILE_NOT_FOUND |
1817 | jmp .ret0 |
1820 | jmp .ret0 |
1818 | .found: |
1821 | .found: |
1819 | ; must not be directory |
1822 | ; must not be directory |
1820 | test byte [edi+11], 10h |
1823 | test byte [edi+11], 10h |
1821 | jz @f |
1824 | jz @f |
1822 | popad |
1825 | popad |
1823 | push ERROR_ACCESS_DENIED |
1826 | push ERROR_ACCESS_DENIED |
1824 | jmp .ret0 |
1827 | jmp .ret0 |
1825 | @@: |
1828 | @@: |
1826 | ; FAT does not support files larger than 4GB |
1829 | ; FAT does not support files larger than 4GB |
1827 | test ebx, ebx |
1830 | test ebx, ebx |
1828 | jz .l1 |
1831 | jz .l1 |
1829 | cmp dword [ebx+4], 0 |
1832 | cmp dword [ebx+4], 0 |
1830 | jz @f |
1833 | jz @f |
1831 | .eof: |
1834 | .eof: |
1832 | popad |
1835 | popad |
1833 | push ERROR_END_OF_FILE |
1836 | push ERROR_END_OF_FILE |
1834 | jmp .ret0 |
1837 | jmp .ret0 |
1835 | @@: |
1838 | @@: |
1836 | mov ebx, [ebx] |
1839 | mov ebx, [ebx] |
1837 | .l1: |
1840 | .l1: |
1838 | ; now edi points to direntry, ebx=start byte to write, |
1841 | ; now edi points to direntry, ebx=start byte to write, |
1839 | ; ecx=number of bytes to write, edx=data pointer |
1842 | ; ecx=number of bytes to write, edx=data pointer |
1840 | call fat_update_datetime |
1843 | call fat_update_datetime |
1841 | 1844 | ||
1842 | ; extend file if needed |
1845 | ; extend file if needed |
1843 | add ecx, ebx |
1846 | add ecx, ebx |
1844 | jc .eof ; FAT does not support files larger than 4GB |
1847 | jc .eof ; FAT does not support files larger than 4GB |
1845 | push 0 ; return value=0 |
1848 | push 0 ; return value=0 |
1846 | cmp ecx, [edi+28] |
1849 | cmp ecx, [edi+28] |
1847 | jbe .length_ok |
1850 | jbe .length_ok |
1848 | cmp ecx, ebx |
1851 | cmp ecx, ebx |
1849 | jz .length_ok |
1852 | jz .length_ok |
1850 | call ramdisk_extend_file |
1853 | call ramdisk_extend_file |
1851 | jnc .length_ok |
1854 | jnc .length_ok |
1852 | ; ramdisk_extend_file can return two error codes: FAT table error or disk full. |
1855 | ; ramdisk_extend_file can return two error codes: FAT table error or disk full. |
1853 | ; First case is fatal error, in second case we may write some data |
1856 | ; First case is fatal error, in second case we may write some data |
1854 | mov [esp], eax |
1857 | mov [esp], eax |
1855 | cmp al, ERROR_DISK_FULL |
1858 | cmp al, ERROR_DISK_FULL |
1856 | jz .disk_full |
1859 | jz .disk_full |
1857 | pop eax |
1860 | pop eax |
1858 | mov [esp+28], eax |
1861 | mov [esp+28], eax |
1859 | popad |
1862 | popad |
1860 | xor ebx, ebx |
1863 | xor ebx, ebx |
1861 | ret |
1864 | ret |
1862 | .disk_full: |
1865 | .disk_full: |
1863 | ; correct number of bytes to write |
1866 | ; correct number of bytes to write |
1864 | mov ecx, [edi+28] |
1867 | mov ecx, [edi+28] |
1865 | cmp ecx, ebx |
1868 | cmp ecx, ebx |
1866 | ja .length_ok |
1869 | ja .length_ok |
1867 | .ret: |
1870 | .ret: |
1868 | pop eax |
1871 | pop eax |
1869 | mov [esp+28], eax ; eax=return value |
1872 | mov [esp+28], eax ; eax=return value |
1870 | sub edx, [esp+20] |
1873 | sub edx, [esp+20] |
1871 | mov [esp+16], edx ; ebx=number of written bytes |
1874 | mov [esp+16], edx ; ebx=number of written bytes |
1872 | popad |
1875 | popad |
1873 | ret |
1876 | ret |
1874 | .length_ok: |
1877 | .length_ok: |
1875 | ; now ebx=start pos, ecx=end pos, both lie inside file |
1878 | ; now ebx=start pos, ecx=end pos, both lie inside file |
1876 | sub ecx, ebx |
1879 | sub ecx, ebx |
1877 | jz .ret |
1880 | jz .ret |
1878 | movzx edi, word [edi+26] ; starting cluster |
1881 | movzx edi, word [edi+26] ; starting cluster |
1879 | .write_loop: |
1882 | .write_loop: |
1880 | sub ebx, 0x200 |
1883 | sub ebx, 0x200 |
1881 | jae .next_cluster |
1884 | jae .next_cluster |
1882 | push ecx |
1885 | push ecx |
1883 | neg ebx |
1886 | neg ebx |
1884 | cmp ecx, ebx |
1887 | cmp ecx, ebx |
1885 | jbe @f |
1888 | jbe @f |
1886 | mov ecx, ebx |
1889 | mov ecx, ebx |
1887 | @@: |
1890 | @@: |
1888 | mov eax, edi |
1891 | mov eax, edi |
1889 | shl eax, 9 |
1892 | shl eax, 9 |
1890 | add eax, [_rd_base] |
1893 | add eax, [_rd_base] |
1891 | add eax, 31*512+0x200 |
1894 | add eax, 31*512+0x200 |
1892 | sub eax, ebx |
1895 | sub eax, ebx |
1893 | mov ebx, eax |
1896 | mov ebx, eax |
1894 | mov eax, edx |
1897 | mov eax, edx |
1895 | call memmove |
1898 | call memmove |
1896 | xor ebx, ebx |
1899 | xor ebx, ebx |
1897 | add edx, ecx |
1900 | add edx, ecx |
1898 | sub [esp], ecx |
1901 | sub [esp], ecx |
1899 | pop ecx |
1902 | pop ecx |
1900 | jz .ret |
1903 | jz .ret |
1901 | .next_cluster: |
1904 | .next_cluster: |
1902 | movzx edi, word [edi*2+RAMDISK_FAT] |
1905 | movzx edi, word [edi*2+RAMDISK_FAT] |
1903 | jmp .write_loop |
1906 | jmp .write_loop |
1904 | 1907 | ||
1905 | ramdisk_extend_file.zero_size: |
1908 | ramdisk_extend_file.zero_size: |
1906 | xor eax, eax |
1909 | xor eax, eax |
1907 | jmp ramdisk_extend_file.start_extend |
1910 | jmp ramdisk_extend_file.start_extend |
1908 | 1911 | ||
1909 | ; extends file on ramdisk to given size, new data area is filled by 0 |
1912 | ; extends file on ramdisk to given size, new data area is filled by 0 |
1910 | ; in: edi->direntry, ecx=new size |
1913 | ; in: edi->direntry, ecx=new size |
1911 | ; out: CF=0 => OK, eax=0 |
1914 | ; out: CF=0 => OK, eax=0 |
1912 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL) |
1915 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL) |
1913 | ramdisk_extend_file: |
1916 | ramdisk_extend_file: |
1914 | push ecx |
1917 | push ecx |
1915 | ; find the last cluster of file |
1918 | ; find the last cluster of file |
1916 | movzx eax, word [edi+26] ; first cluster |
1919 | movzx eax, word [edi+26] ; first cluster |
1917 | mov ecx, [edi+28] |
1920 | mov ecx, [edi+28] |
1918 | jecxz .zero_size |
1921 | jecxz .zero_size |
1919 | @@: |
1922 | @@: |
1920 | sub ecx, 0x200 |
1923 | sub ecx, 0x200 |
1921 | jbe @f |
1924 | jbe @f |
1922 | mov eax, [eax*2+RAMDISK_FAT] |
1925 | mov eax, [eax*2+RAMDISK_FAT] |
1923 | and eax, 0xFFF |
1926 | and eax, 0xFFF |
1924 | jz .fat_err |
1927 | jz .fat_err |
1925 | cmp eax, 0xFF8 |
1928 | cmp eax, 0xFF8 |
1926 | jb @b |
1929 | jb @b |
1927 | .fat_err: |
1930 | .fat_err: |
1928 | pop ecx |
1931 | pop ecx |
1929 | push ERROR_FAT_TABLE |
1932 | push ERROR_FAT_TABLE |
1930 | pop eax |
1933 | pop eax |
1931 | stc |
1934 | stc |
1932 | ret |
1935 | ret |
1933 | @@: |
1936 | @@: |
1934 | push eax |
1937 | push eax |
1935 | mov eax, [eax*2+RAMDISK_FAT] |
1938 | mov eax, [eax*2+RAMDISK_FAT] |
1936 | and eax, 0xFFF |
1939 | and eax, 0xFFF |
1937 | cmp eax, 0xFF8 |
1940 | cmp eax, 0xFF8 |
1938 | pop eax |
1941 | pop eax |
1939 | jb .fat_err |
1942 | jb .fat_err |
1940 | ; set length to full number of sectors and make sure that last sector is zero-padded |
1943 | ; set length to full number of sectors and make sure that last sector is zero-padded |
1941 | sub [edi+28], ecx |
1944 | sub [edi+28], ecx |
1942 | push eax edi |
1945 | push eax edi |
1943 | mov edi, eax |
1946 | mov edi, eax |
1944 | shl edi, 9 |
1947 | shl edi, 9 |
1945 | add edi, [_rd_base] |
1948 | add edi, [_rd_base] |
1946 | lea edi, [edi+31*512+0x200+ecx] |
1949 | lea edi, [edi+31*512+0x200+ecx] |
1947 | neg ecx |
1950 | neg ecx |
1948 | xor eax, eax |
1951 | xor eax, eax |
1949 | rep stosb |
1952 | rep stosb |
1950 | pop edi eax |
1953 | pop edi eax |
1951 | .start_extend: |
1954 | .start_extend: |
1952 | pop ecx |
1955 | pop ecx |
1953 | ; now do extend |
1956 | ; now do extend |
1954 | push edx esi |
1957 | push edx esi |
1955 | mov esi, RAMDISK_FAT+2*2 ; start scan from cluster 2 |
1958 | mov esi, RAMDISK_FAT+2*2 ; start scan from cluster 2 |
1956 | mov edx, 2847 ; number of clusters to scan |
1959 | mov edx, 2847 ; number of clusters to scan |
1957 | .extend_loop: |
1960 | .extend_loop: |
1958 | cmp [edi+28], ecx |
1961 | cmp [edi+28], ecx |
1959 | jae .extend_done |
1962 | jae .extend_done |
1960 | ; add new sector |
1963 | ; add new sector |
1961 | push ecx |
1964 | push ecx |
1962 | mov ecx, edx |
1965 | mov ecx, edx |
1963 | push edi |
1966 | push edi |
1964 | mov edi, esi |
1967 | mov edi, esi |
1965 | jecxz .disk_full |
1968 | jecxz .disk_full |
1966 | push eax |
1969 | push eax |
1967 | xor eax, eax |
1970 | xor eax, eax |
1968 | repnz scasw |
1971 | repnz scasw |
1969 | pop eax |
1972 | pop eax |
1970 | jnz .disk_full |
1973 | jnz .disk_full |
1971 | mov word [edi-2], 0xFFF |
1974 | mov word [edi-2], 0xFFF |
1972 | mov esi, edi |
1975 | mov esi, edi |
1973 | mov edx, ecx |
1976 | mov edx, ecx |
1974 | sub edi, RAMDISK_FAT |
1977 | sub edi, RAMDISK_FAT |
1975 | shr edi, 1 |
1978 | shr edi, 1 |
1976 | dec edi ; now edi=new cluster |
1979 | dec edi ; now edi=new cluster |
1977 | test eax, eax |
1980 | test eax, eax |
1978 | jz .first_cluster |
1981 | jz .first_cluster |
1979 | mov [RAMDISK_FAT+eax*2], di |
1982 | mov [RAMDISK_FAT+eax*2], di |
1980 | jmp @f |
1983 | jmp @f |
1981 | .first_cluster: |
1984 | .first_cluster: |
1982 | pop eax ; eax->direntry |
1985 | pop eax ; eax->direntry |
1983 | push eax |
1986 | push eax |
1984 | mov [eax+26], di |
1987 | mov [eax+26], di |
1985 | @@: |
1988 | @@: |
1986 | push edi |
1989 | push edi |
1987 | shl edi, 9 |
1990 | shl edi, 9 |
1988 | add edi, [_rd_base] |
1991 | add edi, [_rd_base] |
1989 | add edi, 31*512 |
1992 | add edi, 31*512 |
1990 | xor eax, eax |
1993 | xor eax, eax |
1991 | mov ecx, 512/4 |
1994 | mov ecx, 512/4 |
1992 | rep stosd |
1995 | rep stosd |
1993 | pop eax ; eax=new cluster |
1996 | pop eax ; eax=new cluster |
1994 | pop edi ; edi->direntry |
1997 | pop edi ; edi->direntry |
1995 | pop ecx ; ecx=required size |
1998 | pop ecx ; ecx=required size |
1996 | add dword [edi+28], 0x200 |
1999 | add dword [edi+28], 0x200 |
1997 | jmp .extend_loop |
2000 | jmp .extend_loop |
1998 | .extend_done: |
2001 | .extend_done: |
1999 | mov [edi+28], ecx |
2002 | mov [edi+28], ecx |
2000 | pop esi edx |
2003 | pop esi edx |
2001 | xor eax, eax ; CF=0 |
2004 | xor eax, eax ; CF=0 |
2002 | ret |
2005 | ret |
2003 | .disk_full: |
2006 | .disk_full: |
2004 | pop edi ecx |
2007 | pop edi ecx |
2005 | pop esi edx |
2008 | pop esi edx |
2006 | stc |
2009 | stc |
2007 | push ERROR_DISK_FULL |
2010 | push ERROR_DISK_FULL |
2008 | pop eax |
2011 | pop eax |
2009 | ret |
2012 | ret |
2010 | 2013 | ||
2011 | fat_update_datetime: |
2014 | fat_update_datetime: |
2012 | call get_time_for_file |
2015 | call get_time_for_file |
2013 | mov [edi+22], ax ; last write time |
2016 | mov [edi+22], ax ; last write time |
2014 | call get_date_for_file |
2017 | call get_date_for_file |
2015 | mov [edi+24], ax ; last write date |
2018 | mov [edi+24], ax ; last write date |
2016 | mov [edi+18], ax ; last access date |
2019 | mov [edi+18], ax ; last access date |
2017 | ret |
2020 | ret |
2018 | 2021 | ||
2019 | ;---------------------------------------------------------------- |
2022 | ;---------------------------------------------------------------- |
2020 | ; |
2023 | ; |
2021 | ; fs_RamdiskSetFileEnd - set end of file on ramdisk |
2024 | ; fs_RamdiskSetFileEnd - set end of file on ramdisk |
2022 | ; |
2025 | ; |
2023 | ; esi points to filename |
2026 | ; esi points to filename |
2024 | ; ebx points to 64-bit number = new file size |
2027 | ; ebx points to 64-bit number = new file size |
2025 | ; ecx ignored (reserved) |
2028 | ; ecx ignored (reserved) |
2026 | ; edx ignored (reserved) |
2029 | ; edx ignored (reserved) |
2027 | ; |
2030 | ; |
2028 | ; ret eax = 0 ok or other = errormsg |
2031 | ; ret eax = 0 ok or other = errormsg |
2029 | ; |
2032 | ; |
2030 | ;-------------------------------------------------------------- |
2033 | ;-------------------------------------------------------------- |
2031 | fs_RamdiskSetFileEnd: |
2034 | fs_RamdiskSetFileEnd: |
2032 | cmp byte [esi], 0 |
2035 | cmp byte [esi], 0 |
2033 | jnz @f |
2036 | jnz @f |
2034 | .access_denied: |
2037 | .access_denied: |
2035 | push ERROR_ACCESS_DENIED |
2038 | push ERROR_ACCESS_DENIED |
2036 | jmp .ret |
2039 | jmp .ret |
2037 | @@: |
2040 | @@: |
2038 | push edi |
2041 | push edi |
2039 | call rd_find_lfn |
2042 | call rd_find_lfn |
2040 | jnc @f |
2043 | jnc @f |
2041 | pop edi |
2044 | pop edi |
2042 | push ERROR_FILE_NOT_FOUND |
2045 | push ERROR_FILE_NOT_FOUND |
2043 | .ret: |
2046 | .ret: |
2044 | pop eax |
2047 | pop eax |
2045 | ret |
2048 | ret |
2046 | @@: |
2049 | @@: |
2047 | ; must not be directory |
2050 | ; must not be directory |
2048 | test byte [edi+11], 10h |
2051 | test byte [edi+11], 10h |
2049 | jz @f |
2052 | jz @f |
2050 | pop edi |
2053 | pop edi |
2051 | jmp .access_denied |
2054 | jmp .access_denied |
2052 | @@: |
2055 | @@: |
2053 | ; file size must not exceed 4Gb |
2056 | ; file size must not exceed 4Gb |
2054 | cmp dword [ebx+4], 0 |
2057 | cmp dword [ebx+4], 0 |
2055 | jz @f |
2058 | jz @f |
2056 | pop edi |
2059 | pop edi |
2057 | push ERROR_END_OF_FILE |
2060 | push ERROR_END_OF_FILE |
2058 | jmp .ret |
2061 | jmp .ret |
2059 | @@: |
2062 | @@: |
2060 | ; set file modification date/time to current |
2063 | ; set file modification date/time to current |
2061 | call fat_update_datetime |
2064 | call fat_update_datetime |
2062 | mov eax, [ebx] |
2065 | mov eax, [ebx] |
2063 | cmp eax, [edi+28] |
2066 | cmp eax, [edi+28] |
2064 | jb .truncate |
2067 | jb .truncate |
2065 | ja .expand |
2068 | ja .expand |
2066 | pop edi |
2069 | pop edi |
2067 | xor eax, eax |
2070 | xor eax, eax |
2068 | ret |
2071 | ret |
2069 | .expand: |
2072 | .expand: |
2070 | push ecx |
2073 | push ecx |
2071 | mov ecx, eax |
2074 | mov ecx, eax |
2072 | call ramdisk_extend_file |
2075 | call ramdisk_extend_file |
2073 | pop ecx |
2076 | pop ecx |
2074 | pop edi |
2077 | pop edi |
2075 | ret |
2078 | ret |
2076 | .truncate: |
2079 | .truncate: |
2077 | mov [edi+28], eax |
2080 | mov [edi+28], eax |
2078 | push ecx |
2081 | push ecx |
2079 | movzx ecx, word [edi+26] |
2082 | movzx ecx, word [edi+26] |
2080 | test eax, eax |
2083 | test eax, eax |
2081 | jz .zero_size |
2084 | jz .zero_size |
2082 | ; find new last sector |
2085 | ; find new last sector |
2083 | @@: |
2086 | @@: |
2084 | sub eax, 0x200 |
2087 | sub eax, 0x200 |
2085 | jbe @f |
2088 | jbe @f |
2086 | movzx ecx, word [RAMDISK_FAT+ecx*2] |
2089 | movzx ecx, word [RAMDISK_FAT+ecx*2] |
2087 | jmp @b |
2090 | jmp @b |
2088 | @@: |
2091 | @@: |
2089 | ; zero data at the end of last sector |
2092 | ; zero data at the end of last sector |
2090 | push ecx |
2093 | push ecx |
2091 | mov edi, ecx |
2094 | mov edi, ecx |
2092 | shl edi, 9 |
2095 | shl edi, 9 |
2093 | add edi, [_rd_base] |
2096 | add edi, [_rd_base] |
2094 | lea edi, [edi+31*512+eax+0x200] |
2097 | lea edi, [edi+31*512+eax+0x200] |
2095 | mov ecx, eax |
2098 | mov ecx, eax |
2096 | neg ecx |
2099 | neg ecx |
2097 | xor eax, eax |
2100 | xor eax, eax |
2098 | rep stosb |
2101 | rep stosb |
2099 | pop ecx |
2102 | pop ecx |
2100 | ; terminate FAT chain |
2103 | ; terminate FAT chain |
2101 | lea ecx, [RAMDISK_FAT+ecx+ecx] |
2104 | lea ecx, [RAMDISK_FAT+ecx+ecx] |
2102 | push dword [ecx] |
2105 | push dword [ecx] |
2103 | mov word [ecx], 0xFFF |
2106 | mov word [ecx], 0xFFF |
2104 | pop ecx |
2107 | pop ecx |
2105 | and ecx, 0xFFF |
2108 | and ecx, 0xFFF |
2106 | jmp .delete |
2109 | jmp .delete |
2107 | .zero_size: |
2110 | .zero_size: |
2108 | and word [edi+26], 0 |
2111 | and word [edi+26], 0 |
2109 | .delete: |
2112 | .delete: |
2110 | ; delete FAT chain starting with ecx |
2113 | ; delete FAT chain starting with ecx |
2111 | ; mark all clusters as free |
2114 | ; mark all clusters as free |
2112 | cmp ecx, 0xFF8 |
2115 | cmp ecx, 0xFF8 |
2113 | jae .deleted |
2116 | jae .deleted |
2114 | lea ecx, [RAMDISK_FAT+ecx+ecx] |
2117 | lea ecx, [RAMDISK_FAT+ecx+ecx] |
2115 | push dword [ecx] |
2118 | push dword [ecx] |
2116 | and word [ecx], 0 |
2119 | and word [ecx], 0 |
2117 | pop ecx |
2120 | pop ecx |
2118 | and ecx, 0xFFF |
2121 | and ecx, 0xFFF |
2119 | jmp .delete |
2122 | jmp .delete |
2120 | .deleted: |
2123 | .deleted: |
2121 | pop ecx |
2124 | pop ecx |
2122 | pop edi |
2125 | pop edi |
2123 | xor eax, eax |
2126 | xor eax, eax |
2124 | ret |
2127 | ret |
2125 | 2128 | ||
2126 | fs_RamdiskGetFileInfo: |
2129 | fs_RamdiskGetFileInfo: |
2127 | cmp byte [esi], 0 |
2130 | cmp byte [esi], 0 |
2128 | jnz @f |
2131 | jnz @f |
2129 | mov eax, 2 ; unsupported |
2132 | mov eax, 2 ; unsupported |
2130 | ret |
2133 | ret |
2131 | @@: |
2134 | @@: |
2132 | push edi |
2135 | push edi |
2133 | call rd_find_lfn |
2136 | call rd_find_lfn |
2134 | fs_GetFileInfo_finish: |
2137 | fs_GetFileInfo_finish: |
2135 | jnc @f |
2138 | jnc @f |
2136 | pop edi |
2139 | pop edi |
2137 | mov eax, ERROR_FILE_NOT_FOUND |
2140 | mov eax, ERROR_FILE_NOT_FOUND |
2138 | ret |
2141 | ret |
2139 | @@: |
2142 | @@: |
2140 | push esi ebp |
2143 | push esi ebp |
2141 | xor ebp, ebp |
2144 | xor ebp, ebp |
2142 | mov esi, edx |
2145 | mov esi, edx |
2143 | and dword [esi+4], 0 |
2146 | and dword [esi+4], 0 |
2144 | call fat_entry_to_bdfe2 |
2147 | call fat_entry_to_bdfe2 |
2145 | pop ebp esi |
2148 | pop ebp esi |
2146 | pop edi |
2149 | pop edi |
2147 | xor eax, eax |
2150 | xor eax, eax |
2148 | ret |
2151 | ret |
2149 | 2152 | ||
2150 | fs_RamdiskSetFileInfo: |
2153 | fs_RamdiskSetFileInfo: |
2151 | cmp byte [esi], 0 |
2154 | cmp byte [esi], 0 |
2152 | jnz @f |
2155 | jnz @f |
2153 | mov eax, 2 ; unsupported |
2156 | mov eax, 2 ; unsupported |
2154 | ret |
2157 | ret |
2155 | @@: |
2158 | @@: |
2156 | push edi |
2159 | push edi |
2157 | call rd_find_lfn |
2160 | call rd_find_lfn |
2158 | jnc @f |
2161 | jnc @f |
2159 | pop edi |
2162 | pop edi |
2160 | mov eax, ERROR_FILE_NOT_FOUND |
2163 | mov eax, ERROR_FILE_NOT_FOUND |
2161 | ret |
2164 | ret |
2162 | @@: |
2165 | @@: |
2163 | call bdfe_to_fat_entry |
2166 | call bdfe_to_fat_entry |
2164 | pop edi |
2167 | pop edi |
2165 | xor eax, eax |
2168 | xor eax, eax |
2166 | ret |
2169 | ret |
2167 | 2170 | ||
2168 | ;---------------------------------------------------------------- |
2171 | ;---------------------------------------------------------------- |
2169 | ; |
2172 | ; |
2170 | ; fs_RamdiskDelete - delete file or empty folder from ramdisk |
2173 | ; fs_RamdiskDelete - delete file or empty folder from ramdisk |
2171 | ; |
2174 | ; |
2172 | ; esi points to filename |
2175 | ; esi points to filename |
2173 | ; |
2176 | ; |
2174 | ; ret eax = 0 ok or other = errormsg |
2177 | ; ret eax = 0 ok or other = errormsg |
2175 | ; |
2178 | ; |
2176 | ;-------------------------------------------------------------- |
2179 | ;-------------------------------------------------------------- |
2177 | fs_RamdiskDelete: |
2180 | fs_RamdiskDelete: |
2178 | cmp byte [esi], 0 |
2181 | cmp byte [esi], 0 |
2179 | jnz @f |
2182 | jnz @f |
2180 | ; cannot delete root! |
2183 | ; cannot delete root! |
2181 | .access_denied: |
2184 | .access_denied: |
2182 | push ERROR_ACCESS_DENIED |
2185 | push ERROR_ACCESS_DENIED |
2183 | .pop_ret: |
2186 | .pop_ret: |
2184 | pop eax |
2187 | pop eax |
2185 | ret |
2188 | ret |
2186 | @@: |
2189 | @@: |
2187 | and [rd_prev_sector], 0 |
2190 | and [rd_prev_sector], 0 |
2188 | and [rd_prev_prev_sector], 0 |
2191 | and [rd_prev_prev_sector], 0 |
2189 | push edi |
2192 | push edi |
2190 | call rd_find_lfn |
2193 | call rd_find_lfn |
2191 | jnc .found |
2194 | jnc .found |
2192 | pop edi |
2195 | pop edi |
2193 | push ERROR_FILE_NOT_FOUND |
2196 | push ERROR_FILE_NOT_FOUND |
2194 | jmp .pop_ret |
2197 | jmp .pop_ret |
2195 | .found: |
2198 | .found: |
2196 | cmp dword [edi], '. ' |
2199 | cmp dword [edi], '. ' |
2197 | jz .access_denied2 |
2200 | jz .access_denied2 |
2198 | cmp dword [edi], '.. ' |
2201 | cmp dword [edi], '.. ' |
2199 | jz .access_denied2 |
2202 | jz .access_denied2 |
2200 | test byte [edi+11], 10h |
2203 | test byte [edi+11], 10h |
2201 | jz .dodel |
2204 | jz .dodel |
2202 | ; we can delete only empty folders! |
2205 | ; we can delete only empty folders! |
2203 | movzx eax, word [edi+26] |
2206 | movzx eax, word [edi+26] |
2204 | push ebx |
2207 | push ebx |
2205 | mov ebx, eax |
2208 | mov ebx, eax |
2206 | shl ebx, 9 |
2209 | shl ebx, 9 |
2207 | add ebx, [_rd_base] |
2210 | add ebx, [_rd_base] |
2208 | add ebx, 31*0x200 + 2*0x20 |
2211 | add ebx, 31*0x200 + 2*0x20 |
2209 | .checkempty: |
2212 | .checkempty: |
2210 | cmp byte [ebx], 0 |
2213 | cmp byte [ebx], 0 |
2211 | jz .empty |
2214 | jz .empty |
2212 | cmp byte [ebx], 0xE5 |
2215 | cmp byte [ebx], 0xE5 |
2213 | jnz .notempty |
2216 | jnz .notempty |
2214 | add ebx, 0x20 |
2217 | add ebx, 0x20 |
2215 | test ebx, 0x1FF |
2218 | test ebx, 0x1FF |
2216 | jnz .checkempty |
2219 | jnz .checkempty |
2217 | movzx eax, word [RAMDISK_FAT + eax*2] |
2220 | movzx eax, word [RAMDISK_FAT + eax*2] |
2218 | test eax, eax |
2221 | test eax, eax |
2219 | jz .empty |
2222 | jz .empty |
2220 | mov ebx, eax |
2223 | mov ebx, eax |
2221 | shl ebx, 9 |
2224 | shl ebx, 9 |
2222 | add ebx, [_rd_base] |
2225 | add ebx, [_rd_base] |
2223 | add ebx, 31*0x200 |
2226 | add ebx, 31*0x200 |
2224 | jmp .checkempty |
2227 | jmp .checkempty |
2225 | .notempty: |
2228 | .notempty: |
2226 | pop ebx |
2229 | pop ebx |
2227 | .access_denied2: |
2230 | .access_denied2: |
2228 | pop edi |
2231 | pop edi |
2229 | jmp .access_denied |
2232 | jmp .access_denied |
2230 | .empty: |
2233 | .empty: |
2231 | pop ebx |
2234 | pop ebx |
2232 | .dodel: |
2235 | .dodel: |
2233 | movzx eax, word [edi+26] |
2236 | movzx eax, word [edi+26] |
2234 | ; delete folder entry |
2237 | ; delete folder entry |
2235 | mov byte [edi], 0xE5 |
2238 | mov byte [edi], 0xE5 |
2236 | ; delete LFN (if present) |
2239 | ; delete LFN (if present) |
2237 | .lfndel: |
2240 | .lfndel: |
2238 | test edi, 0x1FF |
2241 | test edi, 0x1FF |
2239 | jnz @f |
2242 | jnz @f |
2240 | cmp [rd_prev_sector], 0 |
2243 | cmp [rd_prev_sector], 0 |
2241 | jz @f |
2244 | jz @f |
2242 | cmp [rd_prev_sector], -1 |
2245 | cmp [rd_prev_sector], -1 |
2243 | jz .lfndone |
2246 | jz .lfndone |
2244 | mov edi, [rd_prev_sector] |
2247 | mov edi, [rd_prev_sector] |
2245 | push [rd_prev_prev_sector] |
2248 | push [rd_prev_prev_sector] |
2246 | pop [rd_prev_sector] |
2249 | pop [rd_prev_sector] |
2247 | or [rd_prev_prev_sector], -1 |
2250 | or [rd_prev_prev_sector], -1 |
2248 | shl edi, 9 |
2251 | shl edi, 9 |
2249 | add edi, [_rd_base] |
2252 | add edi, [_rd_base] |
2250 | add edi, 31*0x200 + 0x200 |
2253 | add edi, 31*0x200 + 0x200 |
2251 | @@: |
2254 | @@: |
2252 | sub edi, 0x20 |
2255 | sub edi, 0x20 |
2253 | cmp byte [edi], 0xE5 |
2256 | cmp byte [edi], 0xE5 |
2254 | jz .lfndone |
2257 | jz .lfndone |
2255 | cmp byte [edi+11], 0xF |
2258 | cmp byte [edi+11], 0xF |
2256 | jnz .lfndone |
2259 | jnz .lfndone |
2257 | mov byte [edi], 0xE5 |
2260 | mov byte [edi], 0xE5 |
2258 | jmp .lfndel |
2261 | jmp .lfndel |
2259 | .lfndone: |
2262 | .lfndone: |
2260 | ; delete FAT chain |
2263 | ; delete FAT chain |
2261 | test eax, eax |
2264 | test eax, eax |
2262 | jz .done |
2265 | jz .done |
2263 | lea eax, [RAMDISK_FAT + eax*2] |
2266 | lea eax, [RAMDISK_FAT + eax*2] |
2264 | push dword [eax] |
2267 | push dword [eax] |
2265 | and word [eax], 0 |
2268 | and word [eax], 0 |
2266 | pop eax |
2269 | pop eax |
2267 | and eax, 0xFFF |
2270 | and eax, 0xFFF |
2268 | jmp .lfndone |
2271 | jmp .lfndone |
2269 | .done: |
2272 | .done: |
2270 | pop edi |
2273 | pop edi |
2271 | xor eax, eax |
2274 | xor eax, eax |
2272 | ret |
2275 | ret |
2273 | 2276 | ||
2274 | ; \end{diamond}=>=>=>=>>->-> |
2277 | ; \end{diamond}=>=>=>=>>->-> |