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Rev 527 | Rev 593 | ||
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1 | $Revision: 527 $ |
- | |
2 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
3 | ;; ;; |
2 | ;; ;; |
4 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
5 | ;; Distributed under terms of the GNU General Public License ;; |
4 | ;; Distributed under terms of the GNU General Public License ;; |
6 | ;; ;; |
5 | ;; ;; |
7 | ;; RAMDISK functions ;; |
6 | ;; RAMDISK functions ;; |
8 | ;; (C) 2004 Ville Turjanmaa, License: GPL ;; |
7 | ;; (C) 2004 Ville Turjanmaa, License: GPL ;; |
9 | ;; Addings by M.Lisovin ;; |
8 | ;; Addings by M.Lisovin ;; |
10 | ;; LFN support by diamond ;; |
9 | ;; LFN support by diamond ;; |
11 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
10 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
- | 11 | ||
- | 12 | $Revision: 593 $ |
|
- | 13 | ||
12 | 14 | ||
13 | ; calculate fat chain |
15 | ; calculate fat chain |
14 | 16 | ||
15 | calculatefatchain: |
17 | calculatefatchain: |
16 | 18 | ||
17 | pushad |
19 | pushad |
18 | 20 | ||
19 | mov esi,RAMDISK+512 |
21 | mov esi,RAMDISK+512 |
20 | mov edi,RAMDISK_FAT |
22 | mov edi,RAMDISK_FAT |
21 | 23 | ||
22 | fcnew: |
24 | fcnew: |
23 | mov eax,dword [esi] |
25 | mov eax,dword [esi] |
24 | mov ebx,dword [esi+4] |
26 | mov ebx,dword [esi+4] |
25 | mov ecx,dword [esi+8] |
27 | mov ecx,dword [esi+8] |
26 | mov edx,ecx |
28 | mov edx,ecx |
27 | shr edx,4 ;8 ok |
29 | shr edx,4 ;8 ok |
28 | shr dx,4 ;7 ok |
30 | shr dx,4 ;7 ok |
29 | xor ch,ch |
31 | xor ch,ch |
30 | shld ecx,ebx,20 ;6 ok |
32 | shld ecx,ebx,20 ;6 ok |
31 | shr cx,4 ;5 ok |
33 | shr cx,4 ;5 ok |
32 | shld ebx,eax,12 |
34 | shld ebx,eax,12 |
33 | and ebx,0x0fffffff ;4 ok |
35 | and ebx,0x0fffffff ;4 ok |
34 | shr bx,4 ;3 ok |
36 | shr bx,4 ;3 ok |
35 | shl eax,4 |
37 | shl eax,4 |
36 | and eax,0x0fffffff ;2 ok |
38 | and eax,0x0fffffff ;2 ok |
37 | shr ax,4 ;1 ok |
39 | shr ax,4 ;1 ok |
38 | mov dword [edi],eax |
40 | mov dword [edi],eax |
39 | mov dword [edi+4],ebx |
41 | mov dword [edi+4],ebx |
40 | mov dword [edi+8],ecx |
42 | mov dword [edi+8],ecx |
41 | mov dword [edi+12],edx |
43 | mov dword [edi+12],edx |
42 | add edi,16 |
44 | add edi,16 |
43 | add esi,12 |
45 | add esi,12 |
44 | 46 | ||
45 | cmp edi,RAMDISK_FAT+2856*2 ;2849 clusters |
47 | cmp edi,RAMDISK_FAT+2856*2 ;2849 clusters |
46 | jnz fcnew |
48 | jnz fcnew |
47 | 49 | ||
48 | popad |
50 | popad |
49 | ret |
51 | ret |
50 | 52 | ||
51 | 53 | ||
52 | restorefatchain: ; restore fat chain |
54 | restorefatchain: ; restore fat chain |
53 | 55 | ||
54 | pushad |
56 | pushad |
55 | 57 | ||
56 | mov esi,RAMDISK_FAT |
58 | mov esi,RAMDISK_FAT |
57 | mov edi,RAMDISK+512 |
59 | mov edi,RAMDISK+512 |
58 | 60 | ||
59 | fcnew2: |
61 | fcnew2: |
60 | mov eax,dword [esi] |
62 | mov eax,dword [esi] |
61 | mov ebx,dword [esi+4] |
63 | mov ebx,dword [esi+4] |
62 | shl ax,4 |
64 | shl ax,4 |
63 | shl eax,4 |
65 | shl eax,4 |
64 | shl bx,4 |
66 | shl bx,4 |
65 | shr ebx,4 |
67 | shr ebx,4 |
66 | shrd eax,ebx,8 |
68 | shrd eax,ebx,8 |
67 | shr ebx,8 |
69 | shr ebx,8 |
68 | mov dword [edi],eax |
70 | mov dword [edi],eax |
69 | mov word [edi+4],bx |
71 | mov word [edi+4],bx |
70 | add edi,6 |
72 | add edi,6 |
71 | add esi,8 |
73 | add esi,8 |
72 | 74 | ||
73 | cmp edi,RAMDISK+512+4278 ;4274 bytes - all used FAT |
75 | cmp edi,RAMDISK+512+4278 ;4274 bytes - all used FAT |
74 | jb fcnew2 |
76 | jb fcnew2 |
75 | 77 | ||
76 | mov esi,RAMDISK+512 ; duplicate fat chain |
78 | mov esi,RAMDISK+512 ; duplicate fat chain |
77 | mov edi,RAMDISK+512+0x1200 |
79 | mov edi,RAMDISK+512+0x1200 |
78 | mov ecx,1069 ;4274/4 |
80 | mov ecx,1069 ;4274/4 |
79 | cld |
81 | cld |
80 | rep movsd |
82 | rep movsd |
81 | 83 | ||
82 | popad |
84 | popad |
83 | ret |
85 | ret |
84 | 86 | ||
85 | 87 | ||
86 | ramdisk_free_space: |
88 | ramdisk_free_space: |
87 | ;--------------------------------------------- |
89 | ;--------------------------------------------- |
88 | ; |
90 | ; |
89 | ; returns free space in edi |
91 | ; returns free space in edi |
90 | ; rewr.by Mihasik |
92 | ; rewr.by Mihasik |
91 | ;--------------------------------------------- |
93 | ;--------------------------------------------- |
92 | 94 | ||
93 | push eax ebx ecx |
95 | push eax ebx ecx |
94 | 96 | ||
95 | mov edi,RAMDISK_FAT ;start of FAT |
97 | mov edi,RAMDISK_FAT ;start of FAT |
96 | xor ax,ax ;Free cluster=0x0000 in FAT |
98 | xor ax,ax ;Free cluster=0x0000 in FAT |
97 | xor ebx,ebx ;counter |
99 | xor ebx,ebx ;counter |
98 | mov ecx,2849 ;2849 clusters |
100 | mov ecx,2849 ;2849 clusters |
99 | cld |
101 | cld |
100 | rdfs1: |
102 | rdfs1: |
101 | repne scasw |
103 | repne scasw |
102 | jnz rdfs2 ;if last cluster not 0 |
104 | jnz rdfs2 ;if last cluster not 0 |
103 | inc ebx |
105 | inc ebx |
104 | test ecx, ecx |
106 | test ecx, ecx |
105 | jnz rdfs1 |
107 | jnz rdfs1 |
106 | rdfs2: |
108 | rdfs2: |
107 | shl ebx,9 ;free clusters*512 |
109 | shl ebx,9 ;free clusters*512 |
108 | mov edi,ebx |
110 | mov edi,ebx |
109 | 111 | ||
110 | pop ecx ebx eax |
112 | pop ecx ebx eax |
111 | ret |
113 | ret |
112 | 114 | ||
113 | 115 | ||
114 | expand_filename: |
116 | expand_filename: |
115 | ;--------------------------------------------- |
117 | ;--------------------------------------------- |
116 | ; |
118 | ; |
117 | ; exapand filename with '.' to 11 character |
119 | ; exapand filename with '.' to 11 character |
118 | ; eax - pointer to filename |
120 | ; eax - pointer to filename |
119 | ;--------------------------------------------- |
121 | ;--------------------------------------------- |
120 | 122 | ||
121 | push esi edi ebx |
123 | push esi edi ebx |
122 | 124 | ||
123 | mov edi,esp ; check for '.' in the name |
125 | mov edi,esp ; check for '.' in the name |
124 | add edi,12+8 |
126 | add edi,12+8 |
125 | 127 | ||
126 | mov esi,eax |
128 | mov esi,eax |
127 | 129 | ||
128 | mov eax,edi |
130 | mov eax,edi |
129 | mov [eax+0],dword ' ' |
131 | mov [eax+0],dword ' ' |
130 | mov [eax+4],dword ' ' |
132 | mov [eax+4],dword ' ' |
131 | mov [eax+8],dword ' ' |
133 | mov [eax+8],dword ' ' |
132 | 134 | ||
133 | flr1: |
135 | flr1: |
134 | 136 | ||
135 | cmp [esi],byte '.' |
137 | cmp [esi],byte '.' |
136 | jne flr2 |
138 | jne flr2 |
137 | mov edi,eax |
139 | mov edi,eax |
138 | add edi,7 |
140 | add edi,7 |
139 | jmp flr3 |
141 | jmp flr3 |
140 | 142 | ||
141 | flr2: |
143 | flr2: |
142 | 144 | ||
143 | mov bl,[esi] |
145 | mov bl,[esi] |
144 | mov [edi],bl |
146 | mov [edi],bl |
145 | 147 | ||
146 | flr3: |
148 | flr3: |
147 | 149 | ||
148 | inc esi |
150 | inc esi |
149 | inc edi |
151 | inc edi |
150 | 152 | ||
151 | mov ebx,eax |
153 | mov ebx,eax |
152 | add ebx,11 |
154 | add ebx,11 |
153 | 155 | ||
154 | cmp edi,ebx |
156 | cmp edi,ebx |
155 | jbe flr1 |
157 | jbe flr1 |
156 | 158 | ||
157 | pop ebx edi esi |
159 | pop ebx edi esi |
158 | ret |
160 | ret |
159 | 161 | ||
160 | fileread: |
162 | fileread: |
161 | ;---------------------------------------------------------------- |
163 | ;---------------------------------------------------------------- |
162 | ; |
164 | ; |
163 | ; fileread - sys floppy |
165 | ; fileread - sys floppy |
164 | ; |
166 | ; |
165 | ; eax points to filename 11 chars |
167 | ; eax points to filename 11 chars |
166 | ; ebx first wanted block ; 1+ ; if 0 then set to 1 |
168 | ; ebx first wanted block ; 1+ ; if 0 then set to 1 |
167 | ; 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 |
168 | ; edx mem location to return data |
170 | ; edx mem location to return data |
169 | ; esi length of filename 12*X 0=root |
171 | ; esi length of filename 12*X 0=root |
170 | ; |
172 | ; |
171 | ; ret ebx = size or 0xffffffff file not found |
173 | ; ret ebx = size or 0xffffffff file not found |
172 | ; eax = 0 ok read or other = errormsg |
174 | ; eax = 0 ok read or other = errormsg |
173 | ; |
175 | ; |
174 | ;-------------------------------------------------------------- |
176 | ;-------------------------------------------------------------- |
175 | test ebx,ebx ;if ebx=0 - set to 1 |
177 | test ebx,ebx ;if ebx=0 - set to 1 |
176 | jnz frfl5 |
178 | jnz frfl5 |
177 | inc ebx |
179 | inc ebx |
178 | frfl5: |
180 | frfl5: |
179 | test ecx,ecx ;if ecx=0 - set to 1 |
181 | test ecx,ecx ;if ecx=0 - set to 1 |
180 | jnz frfl6 |
182 | jnz frfl6 |
181 | inc ecx |
183 | inc ecx |
182 | frfl6: |
184 | frfl6: |
183 | test esi,esi ; return ramdisk root |
185 | test esi,esi ; return ramdisk root |
184 | jnz fr_noroot ;if not root |
186 | jnz fr_noroot ;if not root |
185 | cmp ebx,14 ;14 clusters=root dir |
187 | cmp ebx,14 ;14 clusters=root dir |
186 | ja oorr |
188 | ja oorr |
187 | cmp ecx,14 |
189 | cmp ecx,14 |
188 | ja oorr |
190 | ja oorr |
189 | jmp fr_do |
191 | jmp fr_do |
190 | oorr: |
192 | oorr: |
191 | mov eax,5 ;out of root range (fnf) |
193 | mov eax,5 ;out of root range (fnf) |
192 | xor ebx,ebx |
194 | xor ebx,ebx |
193 | dec ebx ;0xffffffff |
195 | dec ebx ;0xffffffff |
194 | ret |
196 | ret |
195 | 197 | ||
196 | fr_do: ;reading rootdir |
198 | fr_do: ;reading rootdir |
197 | mov edi,edx |
199 | mov edi,edx |
198 | dec ebx |
200 | dec ebx |
199 | push edx |
201 | push edx |
200 | mov edx,ecx |
202 | mov edx,ecx |
201 | add edx,ebx |
203 | add edx,ebx |
202 | cmp edx,15 ;ebx+ecx=14+1 |
204 | cmp edx,15 ;ebx+ecx=14+1 |
203 | pushf |
205 | pushf |
204 | jbe fr_do1 |
206 | jbe fr_do1 |
205 | sub edx,14 |
207 | sub edx,14 |
206 | sub ecx,edx |
208 | sub ecx,edx |
207 | fr_do1: |
209 | fr_do1: |
208 | shl ebx,9 |
210 | shl ebx,9 |
209 | mov esi,RAMDISK+512*19 |
211 | mov esi,RAMDISK+512*19 |
210 | add esi,ebx |
212 | add esi,ebx |
211 | shl ecx,7 |
213 | shl ecx,7 |
212 | cld |
214 | cld |
213 | rep movsd |
215 | rep movsd |
214 | popf |
216 | popf |
215 | pop edx |
217 | pop edx |
216 | jae fr_do2 |
218 | jae fr_do2 |
217 | xor eax,eax ; ok read |
219 | xor eax,eax ; ok read |
218 | xor ebx,ebx |
220 | xor ebx,ebx |
219 | ret |
221 | ret |
220 | fr_do2: ;if last cluster |
222 | fr_do2: ;if last cluster |
221 | mov eax,6 ;end of file |
223 | mov eax,6 ;end of file |
222 | xor ebx,ebx |
224 | xor ebx,ebx |
223 | ret |
225 | ret |
224 | 226 | ||
225 | fr_noroot: |
227 | fr_noroot: |
226 | 228 | ||
227 | sub esp,32 |
229 | sub esp,32 |
228 | call expand_filename |
230 | call expand_filename |
229 | 231 | ||
230 | dec ebx |
232 | dec ebx |
231 | 233 | ||
232 | push eax |
234 | push eax |
233 | 235 | ||
234 | push eax ebx ecx edx esi edi |
236 | push eax ebx ecx edx esi edi |
235 | call rd_findfile |
237 | call rd_findfile |
236 | je fifound |
238 | je fifound |
237 | add esp,32+28 ;if file not found |
239 | add esp,32+28 ;if file not found |
238 | ret |
240 | ret |
239 | 241 | ||
240 | fifound: |
242 | fifound: |
241 | 243 | ||
242 | mov ebx,[edi-11+28] ;file size |
244 | mov ebx,[edi-11+28] ;file size |
243 | mov [esp+20],ebx |
245 | mov [esp+20],ebx |
244 | mov [esp+24],ebx |
246 | mov [esp+24],ebx |
245 | add edi,0xf |
247 | add edi,0xf |
246 | movzx eax,word [edi] |
248 | movzx eax,word [edi] |
247 | mov edi,eax ;edi=cluster |
249 | mov edi,eax ;edi=cluster |
248 | 250 | ||
249 | frnew: |
251 | frnew: |
250 | 252 | ||
251 | add eax,31 ;bootsector+2*fat+filenames |
253 | add eax,31 ;bootsector+2*fat+filenames |
252 | shl eax,9 ;*512 |
254 | shl eax,9 ;*512 |
253 | add eax,RAMDISK ;image base |
255 | add eax,RAMDISK ;image base |
254 | mov ebx,[esp+8] |
256 | mov ebx,[esp+8] |
255 | mov ecx,512 ;[esp+4] |
257 | mov ecx,512 ;[esp+4] |
256 | 258 | ||
257 | cmp [esp+16],dword 0 ; wanted cluster ? |
259 | cmp [esp+16],dword 0 ; wanted cluster ? |
258 | jne frfl7 |
260 | jne frfl7 |
259 | call memmove |
261 | call memmove |
260 | add [esp+8],dword 512 |
262 | add [esp+8],dword 512 |
261 | dec dword [esp+12] ; last wanted cluster ? |
263 | dec dword [esp+12] ; last wanted cluster ? |
262 | je frnoread |
264 | je frnoread |
263 | jmp frfl8 |
265 | jmp frfl8 |
264 | frfl7: |
266 | frfl7: |
265 | dec dword [esp+16] |
267 | dec dword [esp+16] |
266 | frfl8: |
268 | frfl8: |
267 | 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 |
268 | mov edi,eax |
270 | mov edi,eax |
269 | cmp edi,4095 ;eof - cluster |
271 | cmp edi,4095 ;eof - cluster |
270 | jz frnoread2 |
272 | jz frnoread2 |
271 | 273 | ||
272 | cmp [esp+24],dword 512 ;eof - size |
274 | cmp [esp+24],dword 512 ;eof - size |
273 | jb frnoread |
275 | jb frnoread |
274 | sub [esp+24],dword 512 |
276 | sub [esp+24],dword 512 |
275 | 277 | ||
276 | jmp frnew |
278 | jmp frnew |
277 | 279 | ||
278 | frnoread2: |
280 | frnoread2: |
279 | 281 | ||
280 | cmp [esp+16],dword 0 ; eof without read ? |
282 | cmp [esp+16],dword 0 ; eof without read ? |
281 | je frnoread |
283 | je frnoread |
282 | 284 | ||
283 | pop edi esi edx ecx |
285 | pop edi esi edx ecx |
284 | add esp,4 |
286 | add esp,4 |
285 | pop ebx ; ebx <- eax : size of file |
287 | pop ebx ; ebx <- eax : size of file |
286 | add esp,36 |
288 | add esp,36 |
287 | mov eax,6 ; end of file |
289 | mov eax,6 ; end of file |
288 | ret |
290 | ret |
289 | 291 | ||
290 | frnoread: |
292 | frnoread: |
291 | 293 | ||
292 | pop edi esi edx ecx |
294 | pop edi esi edx ecx |
293 | add esp,4 |
295 | add esp,4 |
294 | pop ebx ; ebx <- eax : size of file |
296 | pop ebx ; ebx <- eax : size of file |
295 | add esp,36 |
297 | add esp,36 |
296 | xor eax,eax ;read ok |
298 | xor eax,eax ;read ok |
297 | ret |
299 | ret |
298 | 300 | ||
299 | filedelete: |
301 | filedelete: |
300 | ;-------------------------------------------- |
302 | ;-------------------------------------------- |
301 | ; |
303 | ; |
302 | ; filedelete - sys floppy |
304 | ; filedelete - sys floppy |
303 | ; in: |
305 | ; in: |
304 | ; eax - pointer to filename 11 chars |
306 | ; eax - pointer to filename 11 chars |
305 | ; |
307 | ; |
306 | ; out: |
308 | ; out: |
307 | ; eax - 0 = successful, 5 = file not found |
309 | ; eax - 0 = successful, 5 = file not found |
308 | ; |
310 | ; |
309 | ;-------------------------------------------- |
311 | ;-------------------------------------------- |
310 | 312 | ||
311 | sub esp,32 |
313 | sub esp,32 |
312 | call expand_filename |
314 | call expand_filename |
313 | 315 | ||
314 | push eax ebx ecx edx esi edi |
316 | push eax ebx ecx edx esi edi |
315 | 317 | ||
316 | call rd_findfile |
318 | call rd_findfile |
317 | je fifoundd |
319 | je fifoundd |
318 | pop edi esi edx ecx ebx eax ;file not found |
320 | pop edi esi edx ecx ebx eax ;file not found |
319 | add esp,32 |
321 | add esp,32 |
320 | mov eax,5 |
322 | mov eax,5 |
321 | ret |
323 | ret |
322 | 324 | ||
323 | fifoundd: |
325 | fifoundd: |
324 | 326 | ||
325 | mov [edi-11],byte 0xE5 ;mark filename deleted |
327 | mov [edi-11],byte 0xE5 ;mark filename deleted |
326 | add edi,0xf |
328 | add edi,0xf |
327 | movzx eax,word [edi] |
329 | movzx eax,word [edi] |
328 | mov edi,eax ;edi = cluster |
330 | mov edi,eax ;edi = cluster |
329 | 331 | ||
330 | frnewd: |
332 | frnewd: |
331 | 333 | ||
332 | shl edi,1 ;find next cluster from FAT |
334 | shl edi,1 ;find next cluster from FAT |
333 | add edi,RAMDISK_FAT |
335 | add edi,RAMDISK_FAT |
334 | movzx eax,word [edi] |
336 | movzx eax,word [edi] |
335 | mov [edi],word 0x0 ;clear fat chain cluster |
337 | mov [edi],word 0x0 ;clear fat chain cluster |
336 | mov edi,eax |
338 | mov edi,eax |
337 | cmp edi,dword 0xff8 ;last cluster ? |
339 | cmp edi,dword 0xff8 ;last cluster ? |
338 | jb frnewd |
340 | jb frnewd |
339 | 341 | ||
340 | pop edi esi edx ecx ebx eax |
342 | pop edi esi edx ecx ebx eax |
341 | add esp,32 |
343 | add esp,32 |
342 | xor eax,eax ; file found |
344 | xor eax,eax ; file found |
343 | ret |
345 | ret |
344 | 346 | ||
345 | 347 | ||
346 | 348 | ||
347 | filesave: |
349 | filesave: |
348 | ;---------------------------------------------------------- |
350 | ;---------------------------------------------------------- |
349 | ; |
351 | ; |
350 | ; filesave - sys floppy |
352 | ; filesave - sys floppy |
351 | ; |
353 | ; |
352 | ; eax points to filename 11 chars |
354 | ; eax points to filename 11 chars |
353 | ; |
355 | ; |
354 | ; eax ; pointer to file name |
356 | ; eax ; pointer to file name |
355 | ; ebx ; buffer |
357 | ; ebx ; buffer |
356 | ; ecx ; count to write in bytes |
358 | ; ecx ; count to write in bytes |
357 | ; edx ; 0 create new , 1 append |
359 | ; edx ; 0 create new , 1 append |
358 | ; |
360 | ; |
359 | ;----------------------------------------------------------- |
361 | ;----------------------------------------------------------- |
360 | 362 | ||
361 | sub esp,32 |
363 | sub esp,32 |
362 | call expand_filename |
364 | call expand_filename |
363 | test edx,edx |
365 | test edx,edx |
364 | jnz fsdel |
366 | jnz fsdel |
365 | pusha |
367 | pusha |
366 | call filedelete |
368 | call filedelete |
367 | popa |
369 | popa |
368 | 370 | ||
369 | fsdel: |
371 | fsdel: |
370 | 372 | ||
371 | call ramdisk_free_space |
373 | call ramdisk_free_space |
372 | cmp ecx,edi |
374 | cmp ecx,edi |
373 | jbe rd_do_save |
375 | jbe rd_do_save |
374 | add esp,32 |
376 | add esp,32 |
375 | mov eax,8 ;disk full |
377 | mov eax,8 ;disk full |
376 | ret |
378 | ret |
377 | 379 | ||
378 | rd_do_save: |
380 | rd_do_save: |
379 | 381 | ||
380 | push eax ebx ecx edx esi edi |
382 | push eax ebx ecx edx esi edi |
381 | 383 | ||
382 | mov edi,RAMDISK+512*18+512 ;Point at directory |
384 | mov edi,RAMDISK+512*18+512 ;Point at directory |
383 | mov edx,224 +1 |
385 | mov edx,224 +1 |
384 | ; find an empty spot for filename in the root dir |
386 | ; find an empty spot for filename in the root dir |
385 | l20ds: |
387 | l20ds: |
386 | dec edx |
388 | dec edx |
387 | jz frnoreadds |
389 | jz frnoreadds |
388 | l21ds: |
390 | l21ds: |
389 | cmp [edi],byte 0xE5 |
391 | cmp [edi],byte 0xE5 |
390 | jz fifoundds |
392 | jz fifoundds |
391 | cmp [edi],byte 0x0 |
393 | cmp [edi],byte 0x0 |
392 | jz fifoundds |
394 | jz fifoundds |
393 | add edi,32 ; Advance to next entry |
395 | add edi,32 ; Advance to next entry |
394 | jmp l20ds |
396 | jmp l20ds |
395 | fifoundds: |
397 | fifoundds: |
396 | 398 | ||
397 | push edi ; move the filename to root dir |
399 | push edi ; move the filename to root dir |
398 | mov esi,[esp+4+20] |
400 | mov esi,[esp+4+20] |
399 | mov ecx,11 |
401 | mov ecx,11 |
400 | cld |
402 | cld |
401 | rep movsb |
403 | rep movsb |
402 | pop edi |
404 | pop edi |
403 | mov edx,edi |
405 | mov edx,edi |
404 | add edx,11+0xf ; edx <- cluster save position |
406 | add edx,11+0xf ; edx <- cluster save position |
405 | mov ebx,[esp+12] ; save file size |
407 | mov ebx,[esp+12] ; save file size |
406 | mov [edi+28],ebx |
408 | mov [edi+28],ebx |
407 | mov [edi+11],byte 0x20 ; attribute |
409 | mov [edi+11],byte 0x20 ; attribute |
408 | ; Ivan Poddubny 11/12/2003: |
410 | ; Ivan Poddubny 11/12/2003: |
409 | call get_date_for_file ; from FAT32.INC |
411 | call get_date_for_file ; from FAT32.INC |
410 | mov [edi+24],ax ; date |
412 | mov [edi+24],ax ; date |
411 | call get_time_for_file ; from FAT32.INC |
413 | call get_time_for_file ; from FAT32.INC |
412 | mov [edi+22],ax ; time |
414 | mov [edi+22],ax ; time |
413 | ; End |
415 | ; End |
414 | mov edi,RAMDISK_FAT ;pointer to first cluster |
416 | mov edi,RAMDISK_FAT ;pointer to first cluster |
415 | mov ecx,2849 |
417 | mov ecx,2849 |
416 | cld |
418 | cld |
417 | frnewds: |
419 | frnewds: |
418 | xor ax,ax |
420 | xor ax,ax |
419 | repne scasw |
421 | repne scasw |
420 | mov ebx,2848 |
422 | mov ebx,2848 |
421 | sub ebx,ecx |
423 | sub ebx,ecx |
422 | mov [edx],bx ; save next cluster pos. to prev cl. |
424 | mov [edx],bx ; save next cluster pos. to prev cl. |
423 | mov edx,edi ; next save pos abs mem add |
425 | mov edx,edi ; next save pos abs mem add |
424 | dec edx |
426 | dec edx |
425 | dec edx |
427 | dec edx |
426 | call fdc_filesave |
428 | call fdc_filesave |
427 | pusha ; move save to floppy cluster |
429 | pusha ; move save to floppy cluster |
428 | add ebx,31 |
430 | add ebx,31 |
429 | shl ebx,9 |
431 | shl ebx,9 |
430 | add ebx,RAMDISK |
432 | add ebx,RAMDISK |
431 | mov eax,[esp+32+16] |
433 | mov eax,[esp+32+16] |
432 | mov ecx,512 |
434 | mov ecx,512 |
433 | call memmove |
435 | call memmove |
434 | popa |
436 | popa |
435 | 437 | ||
436 | mov eax,[esp+12] |
438 | mov eax,[esp+12] |
437 | cmp eax,512 |
439 | cmp eax,512 |
438 | jbe flnsa |
440 | jbe flnsa |
439 | sub eax,512 |
441 | sub eax,512 |
440 | mov [esp+12],eax |
442 | mov [esp+12],eax |
441 | add dword [esp+16], 512 |
443 | add dword [esp+16], 512 |
442 | jmp frnewds |
444 | jmp frnewds |
443 | 445 | ||
444 | flnsa: |
446 | flnsa: |
445 | mov [edi-2],word 4095 ; mark end of file - last cluster |
447 | mov [edi-2],word 4095 ; mark end of file - last cluster |
446 | 448 | ||
447 | frnoreadds: |
449 | frnoreadds: |
448 | 450 | ||
449 | pop edi esi edx ecx ebx eax |
451 | pop edi esi edx ecx ebx eax |
450 | add esp,32 |
452 | add esp,32 |
451 | 453 | ||
452 | ; pusha |
454 | ; pusha |
453 | ; cli |
455 | ; cli |
454 | ; call fdc_commitfile |
456 | ; call fdc_commitfile |
455 | ; sti |
457 | ; sti |
456 | ; popa |
458 | ; popa |
457 | 459 | ||
458 | xor eax,eax ;ok write |
460 | xor eax,eax ;ok write |
459 | ret |
461 | ret |
460 | 462 | ||
461 | rd_findfile: |
463 | rd_findfile: |
462 | ;by Mihasik |
464 | ;by Mihasik |
463 | ;IN: eax - pointer to filename OUT: filestring+11 in edi or notZero in flags and fnf in eax,ebx |
465 | ;IN: eax - pointer to filename OUT: filestring+11 in edi or notZero in flags and fnf in eax,ebx |
464 | 466 | ||
465 | mov edi,RAMDISK+512*18+512 ;Point at directory |
467 | mov edi,RAMDISK+512*18+512 ;Point at directory |
466 | cld |
468 | cld |
467 | rd_newsearch: |
469 | rd_newsearch: |
468 | mov esi,eax |
470 | mov esi,eax |
469 | mov ecx,11 |
471 | mov ecx,11 |
470 | rep cmpsb |
472 | rep cmpsb |
471 | je rd_ff |
473 | je rd_ff |
472 | add cl,21 |
474 | add cl,21 |
473 | add edi,ecx |
475 | add edi,ecx |
474 | cmp edi,RAMDISK+512*33 |
476 | cmp edi,RAMDISK+512*33 |
475 | jb rd_newsearch |
477 | jb rd_newsearch |
476 | mov eax,5 ;if file not found - eax=5 |
478 | mov eax,5 ;if file not found - eax=5 |
477 | xor ebx,ebx |
479 | xor ebx,ebx |
478 | dec ebx ;ebx=0xffffffff and zf=0 |
480 | dec ebx ;ebx=0xffffffff and zf=0 |
479 | rd_ff: |
481 | rd_ff: |
480 | ret |
482 | ret |
481 | 483 | ||
482 | ; \begin{diamond} |
484 | ; \begin{diamond} |
483 | 485 | ||
484 | uni2ansi_str: |
486 | uni2ansi_str: |
485 | ; convert UNICODE zero-terminated string to ASCII-string (codepage 866) |
487 | ; convert UNICODE zero-terminated string to ASCII-string (codepage 866) |
486 | ; in: esi->source, edi->buffer (may be esi=edi) |
488 | ; in: esi->source, edi->buffer (may be esi=edi) |
487 | ; destroys: eax,esi,edi |
489 | ; destroys: eax,esi,edi |
488 | lodsw |
490 | lodsw |
489 | test ax, ax |
491 | test ax, ax |
490 | jz .done |
492 | jz .done |
491 | cmp ax, 0x80 |
493 | cmp ax, 0x80 |
492 | jb .ascii |
494 | jb .ascii |
493 | cmp ax, 0x401 |
495 | cmp ax, 0x401 |
494 | jz .yo1 |
496 | jz .yo1 |
495 | cmp ax, 0x451 |
497 | cmp ax, 0x451 |
496 | jz .yo2 |
498 | jz .yo2 |
497 | cmp ax, 0x410 |
499 | cmp ax, 0x410 |
498 | jb .unk |
500 | jb .unk |
499 | cmp ax, 0x440 |
501 | cmp ax, 0x440 |
500 | jb .rus1 |
502 | jb .rus1 |
501 | cmp ax, 0x450 |
503 | cmp ax, 0x450 |
502 | jb .rus2 |
504 | jb .rus2 |
503 | .unk: |
505 | .unk: |
504 | mov al, '_' |
506 | mov al, '_' |
505 | jmp .doit |
507 | jmp .doit |
506 | .yo1: |
508 | .yo1: |
507 | mov al, 'ð' |
509 | mov al, 'ð' |
508 | jmp .doit |
510 | jmp .doit |
509 | .yo2: |
511 | .yo2: |
510 | mov al, 'ñ' |
512 | mov al, 'ñ' |
511 | jmp .doit |
513 | jmp .doit |
512 | .rus1: |
514 | .rus1: |
513 | ; 0x410-0x43F -> 0x80-0xAF |
515 | ; 0x410-0x43F -> 0x80-0xAF |
514 | add al, 0x70 |
516 | add al, 0x70 |
515 | jmp .doit |
517 | jmp .doit |
516 | .rus2: |
518 | .rus2: |
517 | ; 0x440-0x44F -> 0xE0-0xEF |
519 | ; 0x440-0x44F -> 0xE0-0xEF |
518 | add al, 0xA0 |
520 | add al, 0xA0 |
519 | .ascii: |
521 | .ascii: |
520 | .doit: |
522 | .doit: |
521 | stosb |
523 | stosb |
522 | jmp uni2ansi_str |
524 | jmp uni2ansi_str |
523 | .done: |
525 | .done: |
524 | mov byte [edi], 0 |
526 | mov byte [edi], 0 |
525 | ret |
527 | ret |
526 | 528 | ||
527 | ansi2uni_char: |
529 | ansi2uni_char: |
528 | ; convert ANSI character in al to UNICODE character in ax, using cp866 encoding |
530 | ; convert ANSI character in al to UNICODE character in ax, using cp866 encoding |
529 | mov ah, 0 |
531 | mov ah, 0 |
530 | ; 0x00-0x7F - trivial map |
532 | ; 0x00-0x7F - trivial map |
531 | cmp al, 0x80 |
533 | cmp al, 0x80 |
532 | jb .ret |
534 | jb .ret |
533 | ; 0x80-0xAF -> 0x410-0x43F |
535 | ; 0x80-0xAF -> 0x410-0x43F |
534 | cmp al, 0xB0 |
536 | cmp al, 0xB0 |
535 | jae @f |
537 | jae @f |
536 | add ax, 0x410-0x80 |
538 | add ax, 0x410-0x80 |
537 | .ret: |
539 | .ret: |
538 | ret |
540 | ret |
539 | @@: |
541 | @@: |
540 | ; 0xE0-0xEF -> 0x440-0x44F |
542 | ; 0xE0-0xEF -> 0x440-0x44F |
541 | cmp al, 0xE0 |
543 | cmp al, 0xE0 |
542 | jb .unk |
544 | jb .unk |
543 | cmp al, 0xF0 |
545 | cmp al, 0xF0 |
544 | jae @f |
546 | jae @f |
545 | add ax, 0x440-0xE0 |
547 | add ax, 0x440-0xE0 |
546 | ret |
548 | ret |
547 | ; 0xF0 -> 0x401 |
549 | ; 0xF0 -> 0x401 |
548 | ; 0xF1 -> 0x451 |
550 | ; 0xF1 -> 0x451 |
549 | @@: |
551 | @@: |
550 | cmp al, 'ð' |
552 | cmp al, 'ð' |
551 | jz .yo1 |
553 | jz .yo1 |
552 | cmp al, 'ñ' |
554 | cmp al, 'ñ' |
553 | jz .yo2 |
555 | jz .yo2 |
554 | .unk: |
556 | .unk: |
555 | mov al, '_' ; ah=0 |
557 | mov al, '_' ; ah=0 |
556 | ret |
558 | ret |
557 | .yo1: |
559 | .yo1: |
558 | mov ax, 0x401 |
560 | mov ax, 0x401 |
559 | ret |
561 | ret |
560 | .yo2: |
562 | .yo2: |
561 | mov ax, 0x451 |
563 | mov ax, 0x451 |
562 | ret |
564 | ret |
563 | 565 | ||
564 | char_toupper: |
566 | char_toupper: |
565 | ; convert character to uppercase, using cp866 encoding |
567 | ; convert character to uppercase, using cp866 encoding |
566 | ; in: al=symbol |
568 | ; in: al=symbol |
567 | ; out: al=converted symbol |
569 | ; out: al=converted symbol |
568 | cmp al, 'a' |
570 | cmp al, 'a' |
569 | jb .ret |
571 | jb .ret |
570 | cmp al, 'z' |
572 | cmp al, 'z' |
571 | jbe .az |
573 | jbe .az |
572 | cmp al, ' ' |
574 | cmp al, ' ' |
573 | jb .ret |
575 | jb .ret |
574 | cmp al, 'à' |
576 | cmp al, 'à' |
575 | jb .rus1 |
577 | jb .rus1 |
576 | cmp al, 'ï' |
578 | cmp al, 'ï' |
577 | ja .ret |
579 | ja .ret |
578 | ; 0xE0-0xEF -> 0x90-0x9F |
580 | ; 0xE0-0xEF -> 0x90-0x9F |
579 | sub al, 'à'-'' |
581 | sub al, 'à'-'' |
580 | .ret: |
582 | .ret: |
581 | ret |
583 | ret |
582 | .rus1: |
584 | .rus1: |
583 | ; 0xA0-0xAF -> 0x80-0x8F |
585 | ; 0xA0-0xAF -> 0x80-0x8F |
584 | .az: |
586 | .az: |
585 | and al, not 0x20 |
587 | and al, not 0x20 |
586 | ret |
588 | ret |
587 | 589 | ||
588 | fat_get_name: |
590 | fat_get_name: |
589 | ; in: edi->FAT entry |
591 | ; in: edi->FAT entry |
590 | ; out: CF=1 - no valid entry |
592 | ; out: CF=1 - no valid entry |
591 | ; else CF=0 and ebp->ASCIIZ-name |
593 | ; else CF=0 and ebp->ASCIIZ-name |
592 | ; (maximum length of filename is 255 (wide) symbols without trailing 0, |
594 | ; (maximum length of filename is 255 (wide) symbols without trailing 0, |
593 | ; but implementation requires buffer 261 words) |
595 | ; but implementation requires buffer 261 words) |
594 | ; destroys eax |
596 | ; destroys eax |
595 | cmp byte [edi], 0 |
597 | cmp byte [edi], 0 |
596 | jz .no |
598 | jz .no |
597 | cmp byte [edi], 0xE5 |
599 | cmp byte [edi], 0xE5 |
598 | jnz @f |
600 | jnz @f |
599 | .no: |
601 | .no: |
600 | stc |
602 | stc |
601 | ret |
603 | ret |
602 | @@: |
604 | @@: |
603 | cmp byte [edi+11], 0xF |
605 | cmp byte [edi+11], 0xF |
604 | jz .longname |
606 | jz .longname |
605 | test byte [edi+11], 8 |
607 | test byte [edi+11], 8 |
606 | jnz .no |
608 | jnz .no |
607 | push ecx |
609 | push ecx |
608 | push edi ebp |
610 | push edi ebp |
609 | test byte [ebp-4], 1 |
611 | test byte [ebp-4], 1 |
610 | jnz .unicode_short |
612 | jnz .unicode_short |
611 | 613 | ||
612 | mov eax, [edi] |
614 | mov eax, [edi] |
613 | mov ecx, [edi+4] |
615 | mov ecx, [edi+4] |
614 | mov [ebp], eax |
616 | mov [ebp], eax |
615 | mov [ebp+4], ecx |
617 | mov [ebp+4], ecx |
616 | 618 | ||
617 | mov ecx, 8 |
619 | mov ecx, 8 |
618 | @@: |
620 | @@: |
619 | cmp byte [ebp+ecx-1], ' ' |
621 | cmp byte [ebp+ecx-1], ' ' |
620 | loope @b |
622 | loope @b |
621 | 623 | ||
622 | mov eax, [edi+8] |
624 | mov eax, [edi+8] |
623 | cmp al, ' ' |
625 | cmp al, ' ' |
624 | je .done |
626 | je .done |
625 | shl eax, 8 |
627 | shl eax, 8 |
626 | mov al, '.' |
628 | mov al, '.' |
627 | 629 | ||
628 | lea ebp, [ebp+ecx+1] |
630 | lea ebp, [ebp+ecx+1] |
629 | mov [ebp], eax |
631 | mov [ebp], eax |
630 | mov ecx, 3 |
632 | mov ecx, 3 |
631 | @@: |
633 | @@: |
632 | rol eax, 8 |
634 | rol eax, 8 |
633 | cmp al, ' ' |
635 | cmp al, ' ' |
634 | jne .done |
636 | jne .done |
635 | loop @b |
637 | loop @b |
636 | dec ebp |
638 | dec ebp |
637 | .done: |
639 | .done: |
638 | and byte [ebp+ecx+1], 0 ; CF=0 |
640 | and byte [ebp+ecx+1], 0 ; CF=0 |
639 | pop ebp edi ecx |
641 | pop ebp edi ecx |
640 | ret |
642 | ret |
641 | .unicode_short: |
643 | .unicode_short: |
642 | mov ecx, 8 |
644 | mov ecx, 8 |
643 | push ecx |
645 | push ecx |
644 | @@: |
646 | @@: |
645 | mov al, [edi] |
647 | mov al, [edi] |
646 | inc edi |
648 | inc edi |
647 | call ansi2uni_char |
649 | call ansi2uni_char |
648 | mov [ebp], ax |
650 | mov [ebp], ax |
649 | inc ebp |
651 | inc ebp |
650 | inc ebp |
652 | inc ebp |
651 | loop @b |
653 | loop @b |
652 | pop ecx |
654 | pop ecx |
653 | @@: |
655 | @@: |
654 | cmp word [ebp-2], ' ' |
656 | cmp word [ebp-2], ' ' |
655 | jnz @f |
657 | jnz @f |
656 | dec ebp |
658 | dec ebp |
657 | dec ebp |
659 | dec ebp |
658 | loop @b |
660 | loop @b |
659 | @@: |
661 | @@: |
660 | mov word [ebp], '.' |
662 | mov word [ebp], '.' |
661 | inc ebp |
663 | inc ebp |
662 | inc ebp |
664 | inc ebp |
663 | mov ecx, 3 |
665 | mov ecx, 3 |
664 | push ecx |
666 | push ecx |
665 | @@: |
667 | @@: |
666 | mov al, [edi] |
668 | mov al, [edi] |
667 | inc edi |
669 | inc edi |
668 | call ansi2uni_char |
670 | call ansi2uni_char |
669 | mov [ebp], ax |
671 | mov [ebp], ax |
670 | inc ebp |
672 | inc ebp |
671 | inc ebp |
673 | inc ebp |
672 | loop @b |
674 | loop @b |
673 | pop ecx |
675 | pop ecx |
674 | @@: |
676 | @@: |
675 | cmp word [ebp-2], ' ' |
677 | cmp word [ebp-2], ' ' |
676 | jnz @f |
678 | jnz @f |
677 | dec ebp |
679 | dec ebp |
678 | dec ebp |
680 | dec ebp |
679 | loop @b |
681 | loop @b |
680 | dec ebp |
682 | dec ebp |
681 | dec ebp |
683 | dec ebp |
682 | @@: |
684 | @@: |
683 | and word [ebp], 0 ; CF=0 |
685 | and word [ebp], 0 ; CF=0 |
684 | pop ebp edi ecx |
686 | pop ebp edi ecx |
685 | ret |
687 | ret |
686 | .longname: |
688 | .longname: |
687 | ; LFN |
689 | ; LFN |
688 | mov al, byte [edi] |
690 | mov al, byte [edi] |
689 | and eax, 0x3F |
691 | and eax, 0x3F |
690 | dec eax |
692 | dec eax |
691 | cmp al, 20 |
693 | cmp al, 20 |
692 | jae .no ; ignore invalid entries |
694 | jae .no ; ignore invalid entries |
693 | mov word [ebp+260*2], 0 ; force null-terminating for orphans |
695 | mov word [ebp+260*2], 0 ; force null-terminating for orphans |
694 | imul eax, 13*2 |
696 | imul eax, 13*2 |
695 | add ebp, eax |
697 | add ebp, eax |
696 | test byte [edi], 0x40 |
698 | test byte [edi], 0x40 |
697 | jz @f |
699 | jz @f |
698 | mov word [ebp+13*2], 0 |
700 | mov word [ebp+13*2], 0 |
699 | @@: |
701 | @@: |
700 | push eax |
702 | push eax |
701 | ; now copy name from edi to ebp ... |
703 | ; now copy name from edi to ebp ... |
702 | mov eax, [edi+1] |
704 | mov eax, [edi+1] |
703 | mov [ebp], eax ; symbols 1,2 |
705 | mov [ebp], eax ; symbols 1,2 |
704 | mov eax, [edi+5] |
706 | mov eax, [edi+5] |
705 | mov [ebp+4], eax ; 3,4 |
707 | mov [ebp+4], eax ; 3,4 |
706 | mov eax, [edi+9] |
708 | mov eax, [edi+9] |
707 | mov [ebp+8], ax ; 5 |
709 | mov [ebp+8], ax ; 5 |
708 | mov eax, [edi+14] |
710 | mov eax, [edi+14] |
709 | mov [ebp+10], eax ; 6,7 |
711 | mov [ebp+10], eax ; 6,7 |
710 | mov eax, [edi+18] |
712 | mov eax, [edi+18] |
711 | mov [ebp+14], eax ; 8,9 |
713 | mov [ebp+14], eax ; 8,9 |
712 | mov eax, [edi+22] |
714 | mov eax, [edi+22] |
713 | mov [ebp+18], eax ; 10,11 |
715 | mov [ebp+18], eax ; 10,11 |
714 | mov eax, [edi+28] |
716 | mov eax, [edi+28] |
715 | mov [ebp+22], eax ; 12,13 |
717 | mov [ebp+22], eax ; 12,13 |
716 | ; ... done |
718 | ; ... done |
717 | pop eax |
719 | pop eax |
718 | sub ebp, eax |
720 | sub ebp, eax |
719 | test eax, eax |
721 | test eax, eax |
720 | jz @f |
722 | jz @f |
721 | ; if this is not first entry, more processing required |
723 | ; if this is not first entry, more processing required |
722 | stc |
724 | stc |
723 | ret |
725 | ret |
724 | @@: |
726 | @@: |
725 | ; if this is first entry: |
727 | ; if this is first entry: |
726 | test byte [ebp-4], 1 |
728 | test byte [ebp-4], 1 |
727 | jnz .ret |
729 | jnz .ret |
728 | ; buffer at ebp contains UNICODE name, convert it to ANSI |
730 | ; buffer at ebp contains UNICODE name, convert it to ANSI |
729 | push esi edi |
731 | push esi edi |
730 | mov esi, ebp |
732 | mov esi, ebp |
731 | mov edi, ebp |
733 | mov edi, ebp |
732 | call uni2ansi_str |
734 | call uni2ansi_str |
733 | pop edi esi |
735 | pop edi esi |
734 | .ret: |
736 | .ret: |
735 | clc |
737 | clc |
736 | ret |
738 | ret |
737 | 739 | ||
738 | fat_compare_name: |
740 | fat_compare_name: |
739 | ; compares ASCIIZ-names, case-insensitive (cp866 encoding) |
741 | ; compares ASCIIZ-names, case-insensitive (cp866 encoding) |
740 | ; in: esi->name, ebp->name |
742 | ; in: esi->name, ebp->name |
741 | ; out: if names match: ZF=1 and esi->next component of name |
743 | ; out: if names match: ZF=1 and esi->next component of name |
742 | ; else: ZF=0, esi is not changed |
744 | ; else: ZF=0, esi is not changed |
743 | ; destroys eax |
745 | ; destroys eax |
744 | push ebp esi |
746 | push ebp esi |
745 | .loop: |
747 | .loop: |
746 | mov al, [ebp] |
748 | mov al, [ebp] |
747 | inc ebp |
749 | inc ebp |
748 | call char_toupper |
750 | call char_toupper |
749 | push eax |
751 | push eax |
750 | lodsb |
752 | lodsb |
751 | call char_toupper |
753 | call char_toupper |
752 | cmp al, [esp] |
754 | cmp al, [esp] |
753 | jnz .done |
755 | jnz .done |
754 | pop eax |
756 | pop eax |
755 | test al, al |
757 | test al, al |
756 | jnz .loop |
758 | jnz .loop |
757 | dec esi |
759 | dec esi |
758 | pop eax |
760 | pop eax |
759 | pop ebp |
761 | pop ebp |
760 | xor eax, eax ; set ZF flag |
762 | xor eax, eax ; set ZF flag |
761 | ret |
763 | ret |
762 | .done: |
764 | .done: |
763 | cmp al, '/' |
765 | cmp al, '/' |
764 | jnz @f |
766 | jnz @f |
765 | cmp byte [esp], 0 |
767 | cmp byte [esp], 0 |
766 | jnz @f |
768 | jnz @f |
767 | mov [esp+4], esi |
769 | mov [esp+4], esi |
768 | @@: |
770 | @@: |
769 | pop eax |
771 | pop eax |
770 | pop esi ebp |
772 | pop esi ebp |
771 | ret |
773 | ret |
772 | 774 | ||
773 | fat_time_to_bdfe: |
775 | fat_time_to_bdfe: |
774 | ; in: eax=FAT time |
776 | ; in: eax=FAT time |
775 | ; out: eax=BDFE time |
777 | ; out: eax=BDFE time |
776 | push ecx edx |
778 | push ecx edx |
777 | mov ecx, eax |
779 | mov ecx, eax |
778 | mov edx, eax |
780 | mov edx, eax |
779 | shr eax, 11 |
781 | shr eax, 11 |
780 | shl eax, 16 ; hours |
782 | shl eax, 16 ; hours |
781 | and edx, 0x1F |
783 | and edx, 0x1F |
782 | add edx, edx |
784 | add edx, edx |
783 | mov al, dl ; seconds |
785 | mov al, dl ; seconds |
784 | shr ecx, 5 |
786 | shr ecx, 5 |
785 | and ecx, 0x3F |
787 | and ecx, 0x3F |
786 | mov ah, cl ; minutes |
788 | mov ah, cl ; minutes |
787 | pop edx ecx |
789 | pop edx ecx |
788 | ret |
790 | ret |
789 | 791 | ||
790 | fat_date_to_bdfe: |
792 | fat_date_to_bdfe: |
791 | push ecx edx |
793 | push ecx edx |
792 | mov ecx, eax |
794 | mov ecx, eax |
793 | mov edx, eax |
795 | mov edx, eax |
794 | shr eax, 9 |
796 | shr eax, 9 |
795 | add ax, 1980 |
797 | add ax, 1980 |
796 | shl eax, 16 ; year |
798 | shl eax, 16 ; year |
797 | and edx, 0x1F |
799 | and edx, 0x1F |
798 | mov al, dl ; day |
800 | mov al, dl ; day |
799 | shr ecx, 5 |
801 | shr ecx, 5 |
800 | and ecx, 0xF |
802 | and ecx, 0xF |
801 | mov ah, cl ; month |
803 | mov ah, cl ; month |
802 | pop edx ecx |
804 | pop edx ecx |
803 | ret |
805 | ret |
804 | 806 | ||
805 | bdfe_to_fat_time: |
807 | bdfe_to_fat_time: |
806 | push edx |
808 | push edx |
807 | mov edx, eax |
809 | mov edx, eax |
808 | shr eax, 16 |
810 | shr eax, 16 |
809 | and dh, 0x3F |
811 | and dh, 0x3F |
810 | shl eax, 6 |
812 | shl eax, 6 |
811 | or al, dh |
813 | or al, dh |
812 | shr dl, 1 |
814 | shr dl, 1 |
813 | and dl, 0x1F |
815 | and dl, 0x1F |
814 | shl eax, 5 |
816 | shl eax, 5 |
815 | or al, dl |
817 | or al, dl |
816 | pop edx |
818 | pop edx |
817 | ret |
819 | ret |
818 | 820 | ||
819 | bdfe_to_fat_date: |
821 | bdfe_to_fat_date: |
820 | push edx |
822 | push edx |
821 | mov edx, eax |
823 | mov edx, eax |
822 | shr eax, 16 |
824 | shr eax, 16 |
823 | sub ax, 1980 |
825 | sub ax, 1980 |
824 | and dh, 0xF |
826 | and dh, 0xF |
825 | shl eax, 4 |
827 | shl eax, 4 |
826 | or al, dh |
828 | or al, dh |
827 | and dl, 0x1F |
829 | and dl, 0x1F |
828 | shl eax, 5 |
830 | shl eax, 5 |
829 | or al, dl |
831 | or al, dl |
830 | pop edx |
832 | pop edx |
831 | ret |
833 | ret |
832 | 834 | ||
833 | fat_entry_to_bdfe: |
835 | fat_entry_to_bdfe: |
834 | ; convert FAT entry at edi to BDFE (block of data of folder entry) at esi, advance esi |
836 | ; convert FAT entry at edi to BDFE (block of data of folder entry) at esi, advance esi |
835 | ; destroys eax |
837 | ; destroys eax |
836 | mov eax, [ebp-4] |
838 | mov eax, [ebp-4] |
837 | mov [esi+4], eax ; ASCII/UNICODE name |
839 | mov [esi+4], eax ; ASCII/UNICODE name |
838 | fat_entry_to_bdfe2: |
840 | fat_entry_to_bdfe2: |
839 | movzx eax, byte [edi+11] |
841 | movzx eax, byte [edi+11] |
840 | mov [esi], eax ; attributes |
842 | mov [esi], eax ; attributes |
841 | movzx eax, word [edi+14] |
843 | movzx eax, word [edi+14] |
842 | call fat_time_to_bdfe |
844 | call fat_time_to_bdfe |
843 | mov [esi+8], eax ; creation time |
845 | mov [esi+8], eax ; creation time |
844 | movzx eax, word [edi+16] |
846 | movzx eax, word [edi+16] |
845 | call fat_date_to_bdfe |
847 | call fat_date_to_bdfe |
846 | mov [esi+12], eax ; creation date |
848 | mov [esi+12], eax ; creation date |
847 | and dword [esi+16], 0 ; last access time is not supported on FAT |
849 | and dword [esi+16], 0 ; last access time is not supported on FAT |
848 | movzx eax, word [edi+18] |
850 | movzx eax, word [edi+18] |
849 | call fat_date_to_bdfe |
851 | call fat_date_to_bdfe |
850 | mov [esi+20], eax ; last access date |
852 | mov [esi+20], eax ; last access date |
851 | movzx eax, word [edi+22] |
853 | movzx eax, word [edi+22] |
852 | call fat_time_to_bdfe |
854 | call fat_time_to_bdfe |
853 | mov [esi+24], eax ; last write time |
855 | mov [esi+24], eax ; last write time |
854 | movzx eax, word [edi+24] |
856 | movzx eax, word [edi+24] |
855 | call fat_date_to_bdfe |
857 | call fat_date_to_bdfe |
856 | mov [esi+28], eax ; last write date |
858 | mov [esi+28], eax ; last write date |
857 | mov eax, [edi+28] |
859 | mov eax, [edi+28] |
858 | mov [esi+32], eax ; file size (low dword) |
860 | mov [esi+32], eax ; file size (low dword) |
859 | xor eax, eax |
861 | xor eax, eax |
860 | mov [esi+36], eax ; file size (high dword) |
862 | mov [esi+36], eax ; file size (high dword) |
861 | test ebp, ebp |
863 | test ebp, ebp |
862 | jz .ret |
864 | jz .ret |
863 | push ecx edi |
865 | push ecx edi |
864 | lea edi, [esi+40] |
866 | lea edi, [esi+40] |
865 | mov esi, ebp |
867 | mov esi, ebp |
866 | test byte [esi-4], 1 |
868 | test byte [esi-4], 1 |
867 | jz .ansi |
869 | jz .ansi |
868 | mov ecx, 260/2 |
870 | mov ecx, 260/2 |
869 | rep movsd |
871 | rep movsd |
870 | mov [edi-2], ax |
872 | mov [edi-2], ax |
871 | @@: |
873 | @@: |
872 | mov esi, edi |
874 | mov esi, edi |
873 | pop edi ecx |
875 | pop edi ecx |
874 | .ret: |
876 | .ret: |
875 | ret |
877 | ret |
876 | .ansi: |
878 | .ansi: |
877 | mov ecx, 264/4 |
879 | mov ecx, 264/4 |
878 | rep movsd |
880 | rep movsd |
879 | mov [edi-1], al |
881 | mov [edi-1], al |
880 | jmp @b |
882 | jmp @b |
881 | 883 | ||
882 | bdfe_to_fat_entry: |
884 | bdfe_to_fat_entry: |
883 | ; convert BDFE at edx to FAT entry at edi |
885 | ; convert BDFE at edx to FAT entry at edi |
884 | ; destroys eax |
886 | ; destroys eax |
885 | ; attributes byte |
887 | ; attributes byte |
886 | test byte [edi+11], 8 ; volume label? |
888 | test byte [edi+11], 8 ; volume label? |
887 | jnz @f |
889 | jnz @f |
888 | mov al, [edx] |
890 | mov al, [edx] |
889 | and al, 0x27 |
891 | and al, 0x27 |
890 | and byte [edi+11], 0x10 |
892 | and byte [edi+11], 0x10 |
891 | or byte [edi+11], al |
893 | or byte [edi+11], al |
892 | @@: |
894 | @@: |
893 | mov eax, [edx+8] |
895 | mov eax, [edx+8] |
894 | call bdfe_to_fat_time |
896 | call bdfe_to_fat_time |
895 | mov [edi+14], ax ; creation time |
897 | mov [edi+14], ax ; creation time |
896 | mov eax, [edx+12] |
898 | mov eax, [edx+12] |
897 | call bdfe_to_fat_date |
899 | call bdfe_to_fat_date |
898 | mov [edi+16], ax ; creation date |
900 | mov [edi+16], ax ; creation date |
899 | mov eax, [edx+20] |
901 | mov eax, [edx+20] |
900 | call bdfe_to_fat_date |
902 | call bdfe_to_fat_date |
901 | mov [edi+18], ax ; last access date |
903 | mov [edi+18], ax ; last access date |
902 | mov eax, [edx+24] |
904 | mov eax, [edx+24] |
903 | call bdfe_to_fat_time |
905 | call bdfe_to_fat_time |
904 | mov [edi+22], ax ; last write time |
906 | mov [edi+22], ax ; last write time |
905 | mov eax, [edx+28] |
907 | mov eax, [edx+28] |
906 | call bdfe_to_fat_date |
908 | call bdfe_to_fat_date |
907 | mov [edi+24], ax ; last write date |
909 | mov [edi+24], ax ; last write date |
908 | ret |
910 | ret |
909 | 911 | ||
910 | ramdisk_root_first: |
912 | ramdisk_root_first: |
911 | mov edi, RAMDISK+512*19 |
913 | mov edi, RAMDISK+512*19 |
912 | clc |
914 | clc |
913 | ret |
915 | ret |
914 | ramdisk_root_next: |
916 | ramdisk_root_next: |
915 | add edi, 0x20 |
917 | add edi, 0x20 |
916 | cmp edi, RAMDISK+512*33 |
918 | cmp edi, RAMDISK+512*33 |
917 | cmc |
919 | cmc |
918 | ret |
920 | ret |
919 | 921 | ||
920 | ramdisk_root_extend_dir: |
922 | ramdisk_root_extend_dir: |
921 | stc |
923 | stc |
922 | ret |
924 | ret |
923 | 925 | ||
924 | uglobal |
926 | uglobal |
925 | ; this is for delete support |
927 | ; this is for delete support |
926 | rd_prev_sector dd ? |
928 | rd_prev_sector dd ? |
927 | rd_prev_prev_sector dd ? |
929 | rd_prev_prev_sector dd ? |
928 | endg |
930 | endg |
929 | 931 | ||
930 | ramdisk_notroot_next: |
932 | ramdisk_notroot_next: |
931 | add edi, 0x20 |
933 | add edi, 0x20 |
932 | test edi, 0x1FF |
934 | test edi, 0x1FF |
933 | jz ramdisk_notroot_next_sector |
935 | jz ramdisk_notroot_next_sector |
934 | ret ; CF=0 |
936 | ret ; CF=0 |
935 | ramdisk_notroot_next_sector: |
937 | ramdisk_notroot_next_sector: |
936 | push ecx |
938 | push ecx |
937 | mov ecx, [eax] |
939 | mov ecx, [eax] |
938 | push [rd_prev_sector] |
940 | push [rd_prev_sector] |
939 | pop [rd_prev_prev_sector] |
941 | pop [rd_prev_prev_sector] |
940 | mov [rd_prev_sector], ecx |
942 | mov [rd_prev_sector], ecx |
941 | mov ecx, [ecx*2+RAMDISK_FAT] |
943 | mov ecx, [ecx*2+RAMDISK_FAT] |
942 | and ecx, 0xFFF |
944 | and ecx, 0xFFF |
943 | cmp ecx, 2849 |
945 | cmp ecx, 2849 |
944 | jae ramdisk_notroot_first.err2 |
946 | jae ramdisk_notroot_first.err2 |
945 | mov [eax], ecx |
947 | mov [eax], ecx |
946 | pop ecx |
948 | pop ecx |
947 | ramdisk_notroot_first: |
949 | ramdisk_notroot_first: |
948 | mov eax, [eax] |
950 | mov eax, [eax] |
949 | cmp eax, 2 |
951 | cmp eax, 2 |
950 | jb .err |
952 | jb .err |
951 | cmp eax, 2849 |
953 | cmp eax, 2849 |
952 | jae .err |
954 | jae .err |
953 | shl eax, 9 |
955 | shl eax, 9 |
954 | lea edi, [eax+(31 shl 9)+RAMDISK] |
956 | lea edi, [eax+(31 shl 9)+RAMDISK] |
955 | clc |
957 | clc |
956 | ret |
958 | ret |
957 | .err2: |
959 | .err2: |
958 | pop ecx |
960 | pop ecx |
959 | .err: |
961 | .err: |
960 | stc |
962 | stc |
961 | ret |
963 | ret |
962 | ramdisk_notroot_next_write: |
964 | ramdisk_notroot_next_write: |
963 | test edi, 0x1FF |
965 | test edi, 0x1FF |
964 | jz ramdisk_notroot_next_sector |
966 | jz ramdisk_notroot_next_sector |
965 | ramdisk_root_next_write: |
967 | ramdisk_root_next_write: |
966 | ret |
968 | ret |
967 | 969 | ||
968 | ramdisk_notroot_extend_dir: |
970 | ramdisk_notroot_extend_dir: |
969 | pusha |
971 | pusha |
970 | xor eax, eax |
972 | xor eax, eax |
971 | mov edi, RAMDISK_FAT |
973 | mov edi, RAMDISK_FAT |
972 | mov ecx, 2849 |
974 | mov ecx, 2849 |
973 | repnz scasw |
975 | repnz scasw |
974 | jnz .notfound |
976 | jnz .notfound |
975 | mov word [edi-2], 0xFFF |
977 | mov word [edi-2], 0xFFF |
976 | sub edi, RAMDISK_FAT |
978 | sub edi, RAMDISK_FAT |
977 | shr edi, 1 |
979 | shr edi, 1 |
978 | dec edi |
980 | dec edi |
979 | mov eax, [esp+28] |
981 | mov eax, [esp+28] |
980 | mov ecx, [eax] |
982 | mov ecx, [eax] |
981 | mov [RAMDISK_FAT+ecx*2], di |
983 | mov [RAMDISK_FAT+ecx*2], di |
982 | mov [eax], edi |
984 | mov [eax], edi |
983 | shl edi, 9 |
985 | shl edi, 9 |
984 | add edi, (31 shl 9)+RAMDISK |
986 | add edi, (31 shl 9)+RAMDISK |
985 | mov [esp], edi |
987 | mov [esp], edi |
986 | xor eax, eax |
988 | xor eax, eax |
987 | mov ecx, 128 |
989 | mov ecx, 128 |
988 | rep stosd |
990 | rep stosd |
989 | popa |
991 | popa |
990 | clc |
992 | clc |
991 | ret |
993 | ret |
992 | .notfound: |
994 | .notfound: |
993 | popa |
995 | popa |
994 | stc |
996 | stc |
995 | ret |
997 | ret |
996 | 998 | ||
997 | rd_find_lfn: |
999 | rd_find_lfn: |
998 | ; in: esi+ebp -> name |
1000 | ; in: esi+ebp -> name |
999 | ; out: CF=1 - file not found |
1001 | ; out: CF=1 - file not found |
1000 | ; else CF=0 and edi->direntry |
1002 | ; else CF=0 and edi->direntry |
1001 | push esi edi |
1003 | push esi edi |
1002 | push 0 |
1004 | push 0 |
1003 | push ramdisk_root_first |
1005 | push ramdisk_root_first |
1004 | push ramdisk_root_next |
1006 | push ramdisk_root_next |
1005 | .loop: |
1007 | .loop: |
1006 | call fat_find_lfn |
1008 | call fat_find_lfn |
1007 | jc .notfound |
1009 | jc .notfound |
1008 | cmp byte [esi], 0 |
1010 | cmp byte [esi], 0 |
1009 | jz .found |
1011 | jz .found |
1010 | .continue: |
1012 | .continue: |
1011 | test byte [edi+11], 10h |
1013 | test byte [edi+11], 10h |
1012 | jz .notfound |
1014 | jz .notfound |
1013 | movzx eax, word [edi+26] |
1015 | movzx eax, word [edi+26] |
1014 | mov [esp+8], eax |
1016 | mov [esp+8], eax |
1015 | mov dword [esp+4], ramdisk_notroot_first |
1017 | mov dword [esp+4], ramdisk_notroot_first |
1016 | mov dword [esp], ramdisk_notroot_next |
1018 | mov dword [esp], ramdisk_notroot_next |
1017 | jmp .loop |
1019 | jmp .loop |
1018 | .notfound: |
1020 | .notfound: |
1019 | add esp, 12 |
1021 | add esp, 12 |
1020 | pop edi esi |
1022 | pop edi esi |
1021 | stc |
1023 | stc |
1022 | ret |
1024 | ret |
1023 | .found: |
1025 | .found: |
1024 | test ebp, ebp |
1026 | test ebp, ebp |
1025 | jz @f |
1027 | jz @f |
1026 | mov esi, ebp |
1028 | mov esi, ebp |
1027 | xor ebp, ebp |
1029 | xor ebp, ebp |
1028 | jmp .continue |
1030 | jmp .continue |
1029 | @@: |
1031 | @@: |
1030 | mov eax, [esp+8] |
1032 | mov eax, [esp+8] |
1031 | add esp, 16 ; CF=0 |
1033 | add esp, 16 ; CF=0 |
1032 | pop esi |
1034 | pop esi |
1033 | ret |
1035 | ret |
1034 | 1036 | ||
1035 | ;---------------------------------------------------------------- |
1037 | ;---------------------------------------------------------------- |
1036 | ; |
1038 | ; |
1037 | ; fs_RamdiskRead - LFN variant for reading sys floppy |
1039 | ; fs_RamdiskRead - LFN variant for reading sys floppy |
1038 | ; |
1040 | ; |
1039 | ; esi points to filename |
1041 | ; esi points to filename |
1040 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1042 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1041 | ; may be ebx=0 - start from first byte |
1043 | ; may be ebx=0 - start from first byte |
1042 | ; ecx number of bytes to read, 0+ |
1044 | ; ecx number of bytes to read, 0+ |
1043 | ; edx mem location to return data |
1045 | ; edx mem location to return data |
1044 | ; |
1046 | ; |
1045 | ; ret ebx = bytes read or 0xffffffff file not found |
1047 | ; ret ebx = bytes read or 0xffffffff file not found |
1046 | ; eax = 0 ok read or other = errormsg |
1048 | ; eax = 0 ok read or other = errormsg |
1047 | ; |
1049 | ; |
1048 | ;-------------------------------------------------------------- |
1050 | ;-------------------------------------------------------------- |
1049 | fs_RamdiskRead: |
1051 | fs_RamdiskRead: |
1050 | cmp byte [esi], 0 |
1052 | cmp byte [esi], 0 |
1051 | jnz @f |
1053 | jnz @f |
1052 | or ebx, -1 |
1054 | or ebx, -1 |
1053 | mov eax, 10 ; access denied |
1055 | mov eax, 10 ; access denied |
1054 | ret |
1056 | ret |
1055 | @@: |
1057 | @@: |
1056 | push edi |
1058 | push edi |
1057 | call rd_find_lfn |
1059 | call rd_find_lfn |
1058 | jnc .found |
1060 | jnc .found |
1059 | pop edi |
1061 | pop edi |
1060 | or ebx, -1 |
1062 | or ebx, -1 |
1061 | mov eax, 5 ; file not found |
1063 | mov eax, 5 ; file not found |
1062 | ret |
1064 | ret |
1063 | .found: |
1065 | .found: |
1064 | test ebx, ebx |
1066 | test ebx, ebx |
1065 | jz .l1 |
1067 | jz .l1 |
1066 | cmp dword [ebx+4], 0 |
1068 | cmp dword [ebx+4], 0 |
1067 | jz @f |
1069 | jz @f |
1068 | xor ebx, ebx |
1070 | xor ebx, ebx |
1069 | .reteof: |
1071 | .reteof: |
1070 | mov eax, 6 ; EOF |
1072 | mov eax, 6 ; EOF |
1071 | pop edi |
1073 | pop edi |
1072 | ret |
1074 | ret |
1073 | @@: |
1075 | @@: |
1074 | mov ebx, [ebx] |
1076 | mov ebx, [ebx] |
1075 | .l1: |
1077 | .l1: |
1076 | push ecx edx |
1078 | push ecx edx |
1077 | push 0 |
1079 | push 0 |
1078 | mov eax, [edi+28] |
1080 | mov eax, [edi+28] |
1079 | sub eax, ebx |
1081 | sub eax, ebx |
1080 | jb .eof |
1082 | jb .eof |
1081 | cmp eax, ecx |
1083 | cmp eax, ecx |
1082 | jae @f |
1084 | jae @f |
1083 | mov ecx, eax |
1085 | mov ecx, eax |
1084 | mov byte [esp], 6 ; EOF |
1086 | mov byte [esp], 6 ; EOF |
1085 | @@: |
1087 | @@: |
1086 | movzx edi, word [edi+26] ; cluster |
1088 | movzx edi, word [edi+26] ; cluster |
1087 | .new: |
1089 | .new: |
1088 | jecxz .done |
1090 | jecxz .done |
1089 | test edi, edi |
1091 | test edi, edi |
1090 | jz .eof |
1092 | jz .eof |
1091 | cmp edi, 0xFF8 |
1093 | cmp edi, 0xFF8 |
1092 | jae .eof |
1094 | jae .eof |
1093 | lea eax, [edi+31] ; bootsector+2*fat+filenames |
1095 | lea eax, [edi+31] ; bootsector+2*fat+filenames |
1094 | shl eax, 9 ; *512 |
1096 | shl eax, 9 ; *512 |
1095 | add eax, RAMDISK ; image base |
1097 | add eax, RAMDISK ; image base |
1096 | ; now eax points to data of cluster |
1098 | ; now eax points to data of cluster |
1097 | sub ebx, 512 |
1099 | sub ebx, 512 |
1098 | jae .skip |
1100 | jae .skip |
1099 | lea eax, [eax+ebx+512] |
1101 | lea eax, [eax+ebx+512] |
1100 | neg ebx |
1102 | neg ebx |
1101 | push ecx |
1103 | push ecx |
1102 | cmp ecx, ebx |
1104 | cmp ecx, ebx |
1103 | jbe @f |
1105 | jbe @f |
1104 | mov ecx, ebx |
1106 | mov ecx, ebx |
1105 | @@: |
1107 | @@: |
1106 | mov ebx, edx |
1108 | mov ebx, edx |
1107 | call memmove |
1109 | call memmove |
1108 | add edx, ecx |
1110 | add edx, ecx |
1109 | sub [esp], ecx |
1111 | sub [esp], ecx |
1110 | pop ecx |
1112 | pop ecx |
1111 | xor ebx, ebx |
1113 | xor ebx, ebx |
1112 | .skip: |
1114 | .skip: |
1113 | movzx edi, word [edi*2+RAMDISK_FAT] ; find next cluster from FAT |
1115 | movzx edi, word [edi*2+RAMDISK_FAT] ; find next cluster from FAT |
1114 | jmp .new |
1116 | jmp .new |
1115 | .eof: |
1117 | .eof: |
1116 | mov ebx, edx |
1118 | mov ebx, edx |
1117 | pop eax edx ecx |
1119 | pop eax edx ecx |
1118 | sub ebx, edx |
1120 | sub ebx, edx |
1119 | jmp .reteof |
1121 | jmp .reteof |
1120 | .done: |
1122 | .done: |
1121 | mov ebx, edx |
1123 | mov ebx, edx |
1122 | pop eax edx ecx edi |
1124 | pop eax edx ecx edi |
1123 | sub ebx, edx |
1125 | sub ebx, edx |
1124 | ret |
1126 | ret |
1125 | 1127 | ||
1126 | ;---------------------------------------------------------------- |
1128 | ;---------------------------------------------------------------- |
1127 | ; |
1129 | ; |
1128 | ; fs_RamdiskReadFolder - LFN variant for reading sys floppy folder |
1130 | ; fs_RamdiskReadFolder - LFN variant for reading sys floppy folder |
1129 | ; |
1131 | ; |
1130 | ; esi points to filename; only root is folder on ramdisk |
1132 | ; esi points to filename; only root is folder on ramdisk |
1131 | ; ebx pointer to structure 32-bit number = first wanted block |
1133 | ; ebx pointer to structure 32-bit number = first wanted block |
1132 | ; & flags (bitfields) |
1134 | ; & flags (bitfields) |
1133 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
1135 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
1134 | ; ecx number of blocks to read, 0+ |
1136 | ; ecx number of blocks to read, 0+ |
1135 | ; edx mem location to return data |
1137 | ; edx mem location to return data |
1136 | ; |
1138 | ; |
1137 | ; ret ebx = size or 0xffffffff file not found |
1139 | ; ret ebx = size or 0xffffffff file not found |
1138 | ; eax = 0 ok read or other = errormsg |
1140 | ; eax = 0 ok read or other = errormsg |
1139 | ; |
1141 | ; |
1140 | ;-------------------------------------------------------------- |
1142 | ;-------------------------------------------------------------- |
1141 | fs_RamdiskReadFolder: |
1143 | fs_RamdiskReadFolder: |
1142 | push edi |
1144 | push edi |
1143 | cmp byte [esi], 0 |
1145 | cmp byte [esi], 0 |
1144 | jz .root |
1146 | jz .root |
1145 | call rd_find_lfn |
1147 | call rd_find_lfn |
1146 | jnc .found |
1148 | jnc .found |
1147 | pop edi |
1149 | pop edi |
1148 | or ebx, -1 |
1150 | or ebx, -1 |
1149 | mov eax, ERROR_FILE_NOT_FOUND |
1151 | mov eax, ERROR_FILE_NOT_FOUND |
1150 | ret |
1152 | ret |
1151 | .found: |
1153 | .found: |
1152 | test byte [edi+11], 0x10 |
1154 | test byte [edi+11], 0x10 |
1153 | jnz .found_dir |
1155 | jnz .found_dir |
1154 | pop edi |
1156 | pop edi |
1155 | or ebx, -1 |
1157 | or ebx, -1 |
1156 | mov eax, ERROR_ACCESS_DENIED |
1158 | mov eax, ERROR_ACCESS_DENIED |
1157 | ret |
1159 | ret |
1158 | .found_dir: |
1160 | .found_dir: |
1159 | movzx eax, word [edi+26] |
1161 | movzx eax, word [edi+26] |
1160 | add eax, 31 |
1162 | add eax, 31 |
1161 | push 0 |
1163 | push 0 |
1162 | jmp .doit |
1164 | jmp .doit |
1163 | .root: |
1165 | .root: |
1164 | mov eax, 19 |
1166 | mov eax, 19 |
1165 | push 14 |
1167 | push 14 |
1166 | .doit: |
1168 | .doit: |
1167 | push esi ecx ebp |
1169 | push esi ecx ebp |
1168 | sub esp, 262*2 ; reserve space for LFN |
1170 | sub esp, 262*2 ; reserve space for LFN |
1169 | mov ebp, esp |
1171 | mov ebp, esp |
1170 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE names |
1172 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE names |
1171 | mov ebx, [ebx] |
1173 | mov ebx, [ebx] |
1172 | ; init header |
1174 | ; init header |
1173 | push eax ecx |
1175 | push eax ecx |
1174 | mov edi, edx |
1176 | mov edi, edx |
1175 | mov ecx, 32/4 |
1177 | mov ecx, 32/4 |
1176 | xor eax, eax |
1178 | xor eax, eax |
1177 | rep stosd |
1179 | rep stosd |
1178 | mov byte [edx], 1 ; version |
1180 | mov byte [edx], 1 ; version |
1179 | pop ecx eax |
1181 | pop ecx eax |
1180 | mov esi, edi ; esi points to block of data of folder entry (BDFE) |
1182 | mov esi, edi ; esi points to block of data of folder entry (BDFE) |
1181 | .main_loop: |
1183 | .main_loop: |
1182 | mov edi, eax |
1184 | mov edi, eax |
1183 | shl edi, 9 |
1185 | shl edi, 9 |
1184 | add edi, RAMDISK |
1186 | add edi, RAMDISK |
1185 | push eax |
1187 | push eax |
1186 | .l1: |
1188 | .l1: |
1187 | call fat_get_name |
1189 | call fat_get_name |
1188 | jc .l2 |
1190 | jc .l2 |
1189 | cmp byte [edi+11], 0xF |
1191 | cmp byte [edi+11], 0xF |
1190 | jnz .do_bdfe |
1192 | jnz .do_bdfe |
1191 | add edi, 0x20 |
1193 | add edi, 0x20 |
1192 | test edi, 0x1FF |
1194 | test edi, 0x1FF |
1193 | jnz .do_bdfe |
1195 | jnz .do_bdfe |
1194 | pop eax |
1196 | pop eax |
1195 | inc eax |
1197 | inc eax |
1196 | dec byte [esp+262*2+16] |
1198 | dec byte [esp+262*2+16] |
1197 | jz .done |
1199 | jz .done |
1198 | jns @f |
1200 | jns @f |
1199 | ; read next sector from FAT |
1201 | ; read next sector from FAT |
1200 | mov eax, [(eax-31-1)*2+RAMDISK_FAT] |
1202 | mov eax, [(eax-31-1)*2+RAMDISK_FAT] |
1201 | and eax, 0xFFF |
1203 | and eax, 0xFFF |
1202 | cmp eax, 0xFF8 |
1204 | cmp eax, 0xFF8 |
1203 | jae .done |
1205 | jae .done |
1204 | add eax, 31 |
1206 | add eax, 31 |
1205 | mov byte [esp+262*2+16], 0 |
1207 | mov byte [esp+262*2+16], 0 |
1206 | @@: |
1208 | @@: |
1207 | mov edi, eax |
1209 | mov edi, eax |
1208 | shl edi, 9 |
1210 | shl edi, 9 |
1209 | add edi, RAMDISK |
1211 | add edi, RAMDISK |
1210 | push eax |
1212 | push eax |
1211 | .do_bdfe: |
1213 | .do_bdfe: |
1212 | inc dword [edx+8] ; new file found |
1214 | inc dword [edx+8] ; new file found |
1213 | dec ebx |
1215 | dec ebx |
1214 | jns .l2 |
1216 | jns .l2 |
1215 | dec ecx |
1217 | dec ecx |
1216 | js .l2 |
1218 | js .l2 |
1217 | inc dword [edx+4] ; new file block copied |
1219 | inc dword [edx+4] ; new file block copied |
1218 | call fat_entry_to_bdfe |
1220 | call fat_entry_to_bdfe |
1219 | .l2: |
1221 | .l2: |
1220 | add edi, 0x20 |
1222 | add edi, 0x20 |
1221 | test edi, 0x1FF |
1223 | test edi, 0x1FF |
1222 | jnz .l1 |
1224 | jnz .l1 |
1223 | pop eax |
1225 | pop eax |
1224 | inc eax |
1226 | inc eax |
1225 | dec byte [esp+262*2+16] |
1227 | dec byte [esp+262*2+16] |
1226 | jz .done |
1228 | jz .done |
1227 | jns @f |
1229 | jns @f |
1228 | ; read next sector from FAT |
1230 | ; read next sector from FAT |
1229 | mov eax, [(eax-31-1)*2+RAMDISK_FAT] |
1231 | mov eax, [(eax-31-1)*2+RAMDISK_FAT] |
1230 | and eax, 0xFFF |
1232 | and eax, 0xFFF |
1231 | cmp eax, 0xFF8 |
1233 | cmp eax, 0xFF8 |
1232 | jae .done |
1234 | jae .done |
1233 | add eax, 31 |
1235 | add eax, 31 |
1234 | mov byte [esp+262*2+16], 0 |
1236 | mov byte [esp+262*2+16], 0 |
1235 | @@: |
1237 | @@: |
1236 | jmp .main_loop |
1238 | jmp .main_loop |
1237 | .done: |
1239 | .done: |
1238 | add esp, 262*2+4 |
1240 | add esp, 262*2+4 |
1239 | pop ebp |
1241 | pop ebp |
1240 | mov ebx, [edx+4] |
1242 | mov ebx, [edx+4] |
1241 | xor eax, eax |
1243 | xor eax, eax |
1242 | dec ecx |
1244 | dec ecx |
1243 | js @f |
1245 | js @f |
1244 | mov al, ERROR_END_OF_FILE |
1246 | mov al, ERROR_END_OF_FILE |
1245 | @@: |
1247 | @@: |
1246 | pop ecx esi edi edi |
1248 | pop ecx esi edi edi |
1247 | ret |
1249 | ret |
1248 | 1250 | ||
1249 | iglobal |
1251 | iglobal |
1250 | label fat_legal_chars byte |
1252 | label fat_legal_chars byte |
1251 | ; 0 = not allowed |
1253 | ; 0 = not allowed |
1252 | ; 1 = allowed only in long names |
1254 | ; 1 = allowed only in long names |
1253 | ; 3 = allowed |
1255 | ; 3 = allowed |
1254 | times 32 db 0 |
1256 | times 32 db 0 |
1255 | ; ! " # $ % & ' ( ) * + , - . / |
1257 | ; ! " # $ % & ' ( ) * + , - . / |
1256 | db 1,3,0,3,3,3,3,3,3,3,0,1,1,3,3,0 |
1258 | db 1,3,0,3,3,3,3,3,3,3,0,1,1,3,3,0 |
1257 | ; 0 1 2 3 4 5 6 7 8 9 : ; < = > ? |
1259 | ; 0 1 2 3 4 5 6 7 8 9 : ; < = > ? |
1258 | db 3,3,3,3,3,3,3,3,3,3,0,1,0,1,0,0 |
1260 | db 3,3,3,3,3,3,3,3,3,3,0,1,0,1,0,0 |
1259 | ; @ A B C D E F G H I J K L M N O |
1261 | ; @ A B C D E F G H I J K L M N O |
1260 | db 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3 |
1262 | db 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3 |
1261 | ; P Q R S T U V W X Y Z [ \ ] ^ _ |
1263 | ; P Q R S T U V W X Y Z [ \ ] ^ _ |
1262 | db 3,3,3,3,3,3,3,3,3,3,3,1,0,1,3,3 |
1264 | db 3,3,3,3,3,3,3,3,3,3,3,1,0,1,3,3 |
1263 | ; ` a b c d e f g h i j k l m n o |
1265 | ; ` a b c d e f g h i j k l m n o |
1264 | db 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3 |
1266 | db 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3 |
1265 | ; p q r s t u v w x y z { | } ~ |
1267 | ; p q r s t u v w x y z { | } ~ |
1266 | db 3,3,3,3,3,3,3,3,3,3,3,3,0,3,3,0 |
1268 | db 3,3,3,3,3,3,3,3,3,3,3,3,0,3,3,0 |
1267 | endg |
1269 | endg |
1268 | 1270 | ||
1269 | fat_name_is_legal: |
1271 | fat_name_is_legal: |
1270 | ; in: esi->(long) name |
1272 | ; in: esi->(long) name |
1271 | ; out: CF set <=> legal |
1273 | ; out: CF set <=> legal |
1272 | ; destroys eax |
1274 | ; destroys eax |
1273 | push esi |
1275 | push esi |
1274 | xor eax, eax |
1276 | xor eax, eax |
1275 | @@: |
1277 | @@: |
1276 | lodsb |
1278 | lodsb |
1277 | test al, al |
1279 | test al, al |
1278 | jz .done |
1280 | jz .done |
1279 | cmp al, 80h |
1281 | cmp al, 80h |
1280 | jae .big |
1282 | jae .big |
1281 | test [fat_legal_chars+eax], 1 |
1283 | test [fat_legal_chars+eax], 1 |
1282 | jnz @b |
1284 | jnz @b |
1283 | .err: |
1285 | .err: |
1284 | pop esi |
1286 | pop esi |
1285 | clc |
1287 | clc |
1286 | ret |
1288 | ret |
1287 | .big: |
1289 | .big: |
1288 | ; 0x80-0xAF, 0xE0-0xEF |
1290 | ; 0x80-0xAF, 0xE0-0xEF |
1289 | cmp al, 0xB0 |
1291 | cmp al, 0xB0 |
1290 | jb @b |
1292 | jb @b |
1291 | cmp al, 0xE0 |
1293 | cmp al, 0xE0 |
1292 | jb .err |
1294 | jb .err |
1293 | cmp al, 0xF0 |
1295 | cmp al, 0xF0 |
1294 | jb @b |
1296 | jb @b |
1295 | jmp .err |
1297 | jmp .err |
1296 | .done: |
1298 | .done: |
1297 | sub esi, [esp] |
1299 | sub esi, [esp] |
1298 | cmp esi, 257 |
1300 | cmp esi, 257 |
1299 | pop esi |
1301 | pop esi |
1300 | ret |
1302 | ret |
1301 | 1303 | ||
1302 | fat_next_short_name: |
1304 | fat_next_short_name: |
1303 | ; in: edi->8+3 name |
1305 | ; in: edi->8+3 name |
1304 | ; out: name corrected |
1306 | ; out: name corrected |
1305 | ; CF=1 <=> error |
1307 | ; CF=1 <=> error |
1306 | pushad |
1308 | pushad |
1307 | mov ecx, 8 |
1309 | mov ecx, 8 |
1308 | mov al, '~' |
1310 | mov al, '~' |
1309 | std |
1311 | std |
1310 | push edi |
1312 | push edi |
1311 | add edi, 7 |
1313 | add edi, 7 |
1312 | repnz scasb |
1314 | repnz scasb |
1313 | pop edi |
1315 | pop edi |
1314 | cld |
1316 | cld |
1315 | jz .tilde |
1317 | jz .tilde |
1316 | ; tilde is not found, insert "~1" at end |
1318 | ; tilde is not found, insert "~1" at end |
1317 | add edi, 6 |
1319 | add edi, 6 |
1318 | cmp word [edi], ' ' |
1320 | cmp word [edi], ' ' |
1319 | jnz .insert_tilde |
1321 | jnz .insert_tilde |
1320 | @@: dec edi |
1322 | @@: dec edi |
1321 | cmp byte [edi], ' ' |
1323 | cmp byte [edi], ' ' |
1322 | jz @b |
1324 | jz @b |
1323 | inc edi |
1325 | inc edi |
1324 | .insert_tilde: |
1326 | .insert_tilde: |
1325 | mov word [edi], '~1' |
1327 | mov word [edi], '~1' |
1326 | popad |
1328 | popad |
1327 | clc |
1329 | clc |
1328 | ret |
1330 | ret |
1329 | .tilde: |
1331 | .tilde: |
1330 | push edi |
1332 | push edi |
1331 | add edi, 7 |
1333 | add edi, 7 |
1332 | xor ecx, ecx |
1334 | xor ecx, ecx |
1333 | @@: |
1335 | @@: |
1334 | ; after tilde may be only digits and trailing spaces |
1336 | ; after tilde may be only digits and trailing spaces |
1335 | cmp byte [edi], '~' |
1337 | cmp byte [edi], '~' |
1336 | jz .break |
1338 | jz .break |
1337 | cmp byte [edi], ' ' |
1339 | cmp byte [edi], ' ' |
1338 | jz .space |
1340 | jz .space |
1339 | cmp byte [edi], '9' |
1341 | cmp byte [edi], '9' |
1340 | jnz .found |
1342 | jnz .found |
1341 | dec edi |
1343 | dec edi |
1342 | jmp @b |
1344 | jmp @b |
1343 | .space: |
1345 | .space: |
1344 | dec edi |
1346 | dec edi |
1345 | inc ecx |
1347 | inc ecx |
1346 | jmp @b |
1348 | jmp @b |
1347 | .found: |
1349 | .found: |
1348 | inc byte [edi] |
1350 | inc byte [edi] |
1349 | add dword [esp], 8 |
1351 | add dword [esp], 8 |
1350 | jmp .zerorest |
1352 | jmp .zerorest |
1351 | .break: |
1353 | .break: |
1352 | jecxz .noplace |
1354 | jecxz .noplace |
1353 | inc edi |
1355 | inc edi |
1354 | mov al, '1' |
1356 | mov al, '1' |
1355 | @@: |
1357 | @@: |
1356 | xchg al, [edi] |
1358 | xchg al, [edi] |
1357 | inc edi |
1359 | inc edi |
1358 | cmp al, ' ' |
1360 | cmp al, ' ' |
1359 | mov al, '0' |
1361 | mov al, '0' |
1360 | jnz @b |
1362 | jnz @b |
1361 | .succ: |
1363 | .succ: |
1362 | pop edi |
1364 | pop edi |
1363 | popad |
1365 | popad |
1364 | clc |
1366 | clc |
1365 | ret |
1367 | ret |
1366 | .noplace: |
1368 | .noplace: |
1367 | dec edi |
1369 | dec edi |
1368 | cmp edi, [esp] |
1370 | cmp edi, [esp] |
1369 | jz .err |
1371 | jz .err |
1370 | add dword [esp], 8 |
1372 | add dword [esp], 8 |
1371 | mov word [edi], '~1' |
1373 | mov word [edi], '~1' |
1372 | inc edi |
1374 | inc edi |
1373 | inc edi |
1375 | inc edi |
1374 | @@: |
1376 | @@: |
1375 | mov byte [edi], '0' |
1377 | mov byte [edi], '0' |
1376 | .zerorest: |
1378 | .zerorest: |
1377 | inc edi |
1379 | inc edi |
1378 | cmp edi, [esp] |
1380 | cmp edi, [esp] |
1379 | jb @b |
1381 | jb @b |
1380 | pop edi |
1382 | pop edi |
1381 | popad |
1383 | popad |
1382 | ;clc ; automatically |
1384 | ;clc ; automatically |
1383 | ret |
1385 | ret |
1384 | .err: |
1386 | .err: |
1385 | pop edi |
1387 | pop edi |
1386 | popad |
1388 | popad |
1387 | stc |
1389 | stc |
1388 | ret |
1390 | ret |
1389 | 1391 | ||
1390 | fat_gen_short_name: |
1392 | fat_gen_short_name: |
1391 | ; in: esi->long name |
1393 | ; in: esi->long name |
1392 | ; edi->buffer (8+3=11 chars) |
1394 | ; edi->buffer (8+3=11 chars) |
1393 | ; out: buffer filled |
1395 | ; out: buffer filled |
1394 | pushad |
1396 | pushad |
1395 | mov eax, ' ' |
1397 | mov eax, ' ' |
1396 | push edi |
1398 | push edi |
1397 | stosd |
1399 | stosd |
1398 | stosd |
1400 | stosd |
1399 | stosd |
1401 | stosd |
1400 | pop edi |
1402 | pop edi |
1401 | xor eax, eax |
1403 | xor eax, eax |
1402 | push 8 |
1404 | push 8 |
1403 | pop ebx |
1405 | pop ebx |
1404 | lea ecx, [edi+8] |
1406 | lea ecx, [edi+8] |
1405 | .loop: |
1407 | .loop: |
1406 | lodsb |
1408 | lodsb |
1407 | test al, al |
1409 | test al, al |
1408 | jz .done |
1410 | jz .done |
1409 | call char_toupper |
1411 | call char_toupper |
1410 | cmp al, ' ' |
1412 | cmp al, ' ' |
1411 | jz .space |
1413 | jz .space |
1412 | cmp al, 80h |
1414 | cmp al, 80h |
1413 | ja .big |
1415 | ja .big |
1414 | test [fat_legal_chars+eax], 2 |
1416 | test [fat_legal_chars+eax], 2 |
1415 | jnz .symbol |
1417 | jnz .symbol |
1416 | .inv_symbol: |
1418 | .inv_symbol: |
1417 | mov al, '_' |
1419 | mov al, '_' |
1418 | or bh, 1 |
1420 | or bh, 1 |
1419 | .symbol: |
1421 | .symbol: |
1420 | cmp al, '.' |
1422 | cmp al, '.' |
1421 | jz .dot |
1423 | jz .dot |
1422 | .normal_symbol: |
1424 | .normal_symbol: |
1423 | dec bl |
1425 | dec bl |
1424 | jns .store |
1426 | jns .store |
1425 | mov bl, 0 |
1427 | mov bl, 0 |
1426 | .space: |
1428 | .space: |
1427 | or bh, 1 |
1429 | or bh, 1 |
1428 | jmp .loop |
1430 | jmp .loop |
1429 | .store: |
1431 | .store: |
1430 | stosb |
1432 | stosb |
1431 | jmp .loop |
1433 | jmp .loop |
1432 | .big: |
1434 | .big: |
1433 | cmp al, 0xB0 |
1435 | cmp al, 0xB0 |
1434 | jb .normal_symbol |
1436 | jb .normal_symbol |
1435 | cmp al, 0xE0 |
1437 | cmp al, 0xE0 |
1436 | jb .inv_symbol |
1438 | jb .inv_symbol |
1437 | cmp al, 0xF0 |
1439 | cmp al, 0xF0 |
1438 | jb .normal_symbol |
1440 | jb .normal_symbol |
1439 | jmp .inv_symbol |
1441 | jmp .inv_symbol |
1440 | .dot: |
1442 | .dot: |
1441 | test bh, 2 |
1443 | test bh, 2 |
1442 | jz .firstdot |
1444 | jz .firstdot |
1443 | pop ebx |
1445 | pop ebx |
1444 | add ebx, edi |
1446 | add ebx, edi |
1445 | sub ebx, ecx |
1447 | sub ebx, ecx |
1446 | push ebx |
1448 | push ebx |
1447 | cmp ebx, ecx |
1449 | cmp ebx, ecx |
1448 | jb @f |
1450 | jb @f |
1449 | pop ebx |
1451 | pop ebx |
1450 | push ecx |
1452 | push ecx |
1451 | @@: |
1453 | @@: |
1452 | cmp edi, ecx |
1454 | cmp edi, ecx |
1453 | jbe .skip |
1455 | jbe .skip |
1454 | @@: |
1456 | @@: |
1455 | dec edi |
1457 | dec edi |
1456 | mov al, [edi] |
1458 | mov al, [edi] |
1457 | dec ebx |
1459 | dec ebx |
1458 | mov [ebx], al |
1460 | mov [ebx], al |
1459 | mov byte [edi], ' ' |
1461 | mov byte [edi], ' ' |
1460 | cmp edi, ecx |
1462 | cmp edi, ecx |
1461 | ja @b |
1463 | ja @b |
1462 | .skip: |
1464 | .skip: |
1463 | mov bh, 3 |
1465 | mov bh, 3 |
1464 | jmp @f |
1466 | jmp @f |
1465 | .firstdot: |
1467 | .firstdot: |
1466 | cmp bl, 8 |
1468 | cmp bl, 8 |
1467 | jz .space |
1469 | jz .space |
1468 | push edi |
1470 | push edi |
1469 | or bh, 2 |
1471 | or bh, 2 |
1470 | @@: |
1472 | @@: |
1471 | mov edi, ecx |
1473 | mov edi, ecx |
1472 | mov bl, 3 |
1474 | mov bl, 3 |
1473 | jmp .loop |
1475 | jmp .loop |
1474 | .done: |
1476 | .done: |
1475 | test bh, 2 |
1477 | test bh, 2 |
1476 | jz @f |
1478 | jz @f |
1477 | pop edi |
1479 | pop edi |
1478 | @@: |
1480 | @@: |
1479 | lea edi, [ecx-8] |
1481 | lea edi, [ecx-8] |
1480 | test bh, 1 |
1482 | test bh, 1 |
1481 | jz @f |
1483 | jz @f |
1482 | call fat_next_short_name |
1484 | call fat_next_short_name |
1483 | @@: |
1485 | @@: |
1484 | popad |
1486 | popad |
1485 | ret |
1487 | ret |
1486 | 1488 | ||
1487 | ;---------------------------------------------------------------- |
1489 | ;---------------------------------------------------------------- |
1488 | ; |
1490 | ; |
1489 | ; fs_RamdiskRewrite - LFN variant for writing ramdisk |
1491 | ; fs_RamdiskRewrite - LFN variant for writing ramdisk |
1490 | ; fs_RamdiskCreateFolder - create folder on ramdisk |
1492 | ; fs_RamdiskCreateFolder - create folder on ramdisk |
1491 | ; |
1493 | ; |
1492 | ; esi points to file/folder name |
1494 | ; esi points to file/folder name |
1493 | ; ebx ignored (reserved) |
1495 | ; ebx ignored (reserved) |
1494 | ; ecx number of bytes to write, 0+ (ignored for folders) |
1496 | ; ecx number of bytes to write, 0+ (ignored for folders) |
1495 | ; edx mem location to data (ignored for folders) |
1497 | ; edx mem location to data (ignored for folders) |
1496 | ; |
1498 | ; |
1497 | ; ret ebx = number of written bytes |
1499 | ; ret ebx = number of written bytes |
1498 | ; eax = 0 ok read or other = errormsg |
1500 | ; eax = 0 ok read or other = errormsg |
1499 | ; |
1501 | ; |
1500 | ;-------------------------------------------------------------- |
1502 | ;-------------------------------------------------------------- |
1501 | @@: |
1503 | @@: |
1502 | mov eax, ERROR_ACCESS_DENIED |
1504 | mov eax, ERROR_ACCESS_DENIED |
1503 | xor ebx, ebx |
1505 | xor ebx, ebx |
1504 | ret |
1506 | ret |
1505 | 1507 | ||
1506 | fs_RamdiskCreateFolder: |
1508 | fs_RamdiskCreateFolder: |
1507 | mov al, 1 ; create folder |
1509 | mov al, 1 ; create folder |
1508 | jmp fs_RamdiskRewrite.common |
1510 | jmp fs_RamdiskRewrite.common |
1509 | 1511 | ||
1510 | fs_RamdiskRewrite: |
1512 | fs_RamdiskRewrite: |
1511 | xor eax, eax ; create file |
1513 | xor eax, eax ; create file |
1512 | .common: |
1514 | .common: |
1513 | cmp byte [esi], 0 |
1515 | cmp byte [esi], 0 |
1514 | jz @b |
1516 | jz @b |
1515 | pushad |
1517 | pushad |
1516 | xor edi, edi |
1518 | xor edi, edi |
1517 | push esi |
1519 | push esi |
1518 | test ebp, ebp |
1520 | test ebp, ebp |
1519 | jz @f |
1521 | jz @f |
1520 | mov esi, ebp |
1522 | mov esi, ebp |
1521 | @@: |
1523 | @@: |
1522 | lodsb |
1524 | lodsb |
1523 | test al, al |
1525 | test al, al |
1524 | jz @f |
1526 | jz @f |
1525 | cmp al, '/' |
1527 | cmp al, '/' |
1526 | jnz @b |
1528 | jnz @b |
1527 | lea edi, [esi-1] |
1529 | lea edi, [esi-1] |
1528 | jmp @b |
1530 | jmp @b |
1529 | @@: |
1531 | @@: |
1530 | pop esi |
1532 | pop esi |
1531 | test edi, edi |
1533 | test edi, edi |
1532 | jnz .noroot |
1534 | jnz .noroot |
1533 | test ebp, ebp |
1535 | test ebp, ebp |
1534 | jnz .hasebp |
1536 | jnz .hasebp |
1535 | push ramdisk_root_extend_dir |
1537 | push ramdisk_root_extend_dir |
1536 | push ramdisk_root_next_write |
1538 | push ramdisk_root_next_write |
1537 | push edi |
1539 | push edi |
1538 | push ramdisk_root_first |
1540 | push ramdisk_root_first |
1539 | push ramdisk_root_next |
1541 | push ramdisk_root_next |
1540 | jmp .common1 |
1542 | jmp .common1 |
1541 | .hasebp: |
1543 | .hasebp: |
1542 | mov eax, ERROR_ACCESS_DENIED |
1544 | mov eax, ERROR_ACCESS_DENIED |
1543 | cmp byte [ebp], 0 |
1545 | cmp byte [ebp], 0 |
1544 | jz .ret1 |
1546 | jz .ret1 |
1545 | push ebp |
1547 | push ebp |
1546 | xor ebp, ebp |
1548 | xor ebp, ebp |
1547 | call rd_find_lfn |
1549 | call rd_find_lfn |
1548 | pop esi |
1550 | pop esi |
1549 | jc .notfound0 |
1551 | jc .notfound0 |
1550 | jmp .common0 |
1552 | jmp .common0 |
1551 | .noroot: |
1553 | .noroot: |
1552 | mov eax, ERROR_ACCESS_DENIED |
1554 | mov eax, ERROR_ACCESS_DENIED |
1553 | cmp byte [edi+1], 0 |
1555 | cmp byte [edi+1], 0 |
1554 | jz .ret1 |
1556 | jz .ret1 |
1555 | ; check existence |
1557 | ; check existence |
1556 | mov byte [edi], 0 |
1558 | mov byte [edi], 0 |
1557 | push edi |
1559 | push edi |
1558 | call rd_find_lfn |
1560 | call rd_find_lfn |
1559 | pop esi |
1561 | pop esi |
1560 | mov byte [esi], '/' |
1562 | mov byte [esi], '/' |
1561 | jnc @f |
1563 | jnc @f |
1562 | .notfound0: |
1564 | .notfound0: |
1563 | mov eax, ERROR_FILE_NOT_FOUND |
1565 | mov eax, ERROR_FILE_NOT_FOUND |
1564 | .ret1: |
1566 | .ret1: |
1565 | mov [esp+28], eax |
1567 | mov [esp+28], eax |
1566 | popad |
1568 | popad |
1567 | xor ebx, ebx |
1569 | xor ebx, ebx |
1568 | ret |
1570 | ret |
1569 | @@: |
1571 | @@: |
1570 | inc esi |
1572 | inc esi |
1571 | .common0: |
1573 | .common0: |
1572 | test byte [edi+11], 0x10 ; must be directory |
1574 | test byte [edi+11], 0x10 ; must be directory |
1573 | mov eax, ERROR_ACCESS_DENIED |
1575 | mov eax, ERROR_ACCESS_DENIED |
1574 | jz .ret1 |
1576 | jz .ret1 |
1575 | movzx ebp, word [edi+26] ; ebp=cluster |
1577 | movzx ebp, word [edi+26] ; ebp=cluster |
1576 | mov eax, ERROR_FAT_TABLE |
1578 | mov eax, ERROR_FAT_TABLE |
1577 | cmp ebp, 2 |
1579 | cmp ebp, 2 |
1578 | jb .ret1 |
1580 | jb .ret1 |
1579 | cmp ebp, 2849 |
1581 | cmp ebp, 2849 |
1580 | jae .ret1 |
1582 | jae .ret1 |
1581 | push ramdisk_notroot_extend_dir |
1583 | push ramdisk_notroot_extend_dir |
1582 | push ramdisk_notroot_next_write |
1584 | push ramdisk_notroot_next_write |
1583 | push ebp |
1585 | push ebp |
1584 | push ramdisk_notroot_first |
1586 | push ramdisk_notroot_first |
1585 | push ramdisk_notroot_next |
1587 | push ramdisk_notroot_next |
1586 | .common1: |
1588 | .common1: |
1587 | call fat_find_lfn |
1589 | call fat_find_lfn |
1588 | jc .notfound |
1590 | jc .notfound |
1589 | ; found |
1591 | ; found |
1590 | test byte [edi+11], 10h |
1592 | test byte [edi+11], 10h |
1591 | jz .exists_file |
1593 | jz .exists_file |
1592 | ; found directory; if we are creating directory, return OK, |
1594 | ; found directory; if we are creating directory, return OK, |
1593 | ; if we are creating file, say "access denied" |
1595 | ; if we are creating file, say "access denied" |
1594 | add esp, 20 |
1596 | add esp, 20 |
1595 | popad |
1597 | popad |
1596 | test al, al |
1598 | test al, al |
1597 | mov eax, ERROR_ACCESS_DENIED |
1599 | mov eax, ERROR_ACCESS_DENIED |
1598 | jz @f |
1600 | jz @f |
1599 | mov al, 0 |
1601 | mov al, 0 |
1600 | @@: |
1602 | @@: |
1601 | xor ebx, ebx |
1603 | xor ebx, ebx |
1602 | ret |
1604 | ret |
1603 | .exists_file: |
1605 | .exists_file: |
1604 | ; found file; if we are creating directory, return "access denied", |
1606 | ; found file; if we are creating directory, return "access denied", |
1605 | ; if we are creating file, delete existing file and continue |
1607 | ; if we are creating file, delete existing file and continue |
1606 | cmp byte [esp+20+28], 0 |
1608 | cmp byte [esp+20+28], 0 |
1607 | jz @f |
1609 | jz @f |
1608 | add esp, 20 |
1610 | add esp, 20 |
1609 | popad |
1611 | popad |
1610 | mov eax, ERROR_ACCESS_DENIED |
1612 | mov eax, ERROR_ACCESS_DENIED |
1611 | xor ebx, ebx |
1613 | xor ebx, ebx |
1612 | ret |
1614 | ret |
1613 | @@: |
1615 | @@: |
1614 | ; delete FAT chain |
1616 | ; delete FAT chain |
1615 | push edi |
1617 | push edi |
1616 | xor eax, eax |
1618 | xor eax, eax |
1617 | mov dword [edi+28], eax ; zero size |
1619 | mov dword [edi+28], eax ; zero size |
1618 | xchg ax, word [edi+26] ; start cluster |
1620 | xchg ax, word [edi+26] ; start cluster |
1619 | test eax, eax |
1621 | test eax, eax |
1620 | jz .done1 |
1622 | jz .done1 |
1621 | @@: |
1623 | @@: |
1622 | cmp eax, 0xFF8 |
1624 | cmp eax, 0xFF8 |
1623 | jae .done1 |
1625 | jae .done1 |
1624 | lea edi, [RAMDISK_FAT + eax*2] ; position in FAT |
1626 | lea edi, [RAMDISK_FAT + eax*2] ; position in FAT |
1625 | xor eax, eax |
1627 | xor eax, eax |
1626 | xchg ax, [edi] |
1628 | xchg ax, [edi] |
1627 | jmp @b |
1629 | jmp @b |
1628 | .done1: |
1630 | .done1: |
1629 | pop edi |
1631 | pop edi |
1630 | call get_time_for_file |
1632 | call get_time_for_file |
1631 | mov [edi+22], ax |
1633 | mov [edi+22], ax |
1632 | call get_date_for_file |
1634 | call get_date_for_file |
1633 | mov [edi+24], ax |
1635 | mov [edi+24], ax |
1634 | mov [edi+18], ax |
1636 | mov [edi+18], ax |
1635 | or byte [edi+11], 20h ; set 'archive' attribute |
1637 | or byte [edi+11], 20h ; set 'archive' attribute |
1636 | jmp .doit |
1638 | jmp .doit |
1637 | .notfound: |
1639 | .notfound: |
1638 | ; file is not found; generate short name |
1640 | ; file is not found; generate short name |
1639 | call fat_name_is_legal |
1641 | call fat_name_is_legal |
1640 | jc @f |
1642 | jc @f |
1641 | add esp, 20 |
1643 | add esp, 20 |
1642 | popad |
1644 | popad |
1643 | mov eax, ERROR_FILE_NOT_FOUND |
1645 | mov eax, ERROR_FILE_NOT_FOUND |
1644 | xor ebx, ebx |
1646 | xor ebx, ebx |
1645 | ret |
1647 | ret |
1646 | @@: |
1648 | @@: |
1647 | sub esp, 12 |
1649 | sub esp, 12 |
1648 | mov edi, esp |
1650 | mov edi, esp |
1649 | call fat_gen_short_name |
1651 | call fat_gen_short_name |
1650 | .test_short_name_loop: |
1652 | .test_short_name_loop: |
1651 | push esi edi ecx |
1653 | push esi edi ecx |
1652 | mov esi, edi |
1654 | mov esi, edi |
1653 | lea eax, [esp+12+12+8] |
1655 | lea eax, [esp+12+12+8] |
1654 | mov [eax], ebp |
1656 | mov [eax], ebp |
1655 | call dword [eax-4] |
1657 | call dword [eax-4] |
1656 | jc .found |
1658 | jc .found |
1657 | .test_short_name_entry: |
1659 | .test_short_name_entry: |
1658 | cmp byte [edi+11], 0xF |
1660 | cmp byte [edi+11], 0xF |
1659 | jz .test_short_name_cont |
1661 | jz .test_short_name_cont |
1660 | mov ecx, 11 |
1662 | mov ecx, 11 |
1661 | push esi edi |
1663 | push esi edi |
1662 | repz cmpsb |
1664 | repz cmpsb |
1663 | pop edi esi |
1665 | pop edi esi |
1664 | jz .short_name_found |
1666 | jz .short_name_found |
1665 | .test_short_name_cont: |
1667 | .test_short_name_cont: |
1666 | lea eax, [esp+12+12+8] |
1668 | lea eax, [esp+12+12+8] |
1667 | call dword [eax-8] |
1669 | call dword [eax-8] |
1668 | jnc .test_short_name_entry |
1670 | jnc .test_short_name_entry |
1669 | jmp .found |
1671 | jmp .found |
1670 | .short_name_found: |
1672 | .short_name_found: |
1671 | pop ecx edi esi |
1673 | pop ecx edi esi |
1672 | call fat_next_short_name |
1674 | call fat_next_short_name |
1673 | jnc .test_short_name_loop |
1675 | jnc .test_short_name_loop |
1674 | .disk_full: |
1676 | .disk_full: |
1675 | add esp, 12+20 |
1677 | add esp, 12+20 |
1676 | popad |
1678 | popad |
1677 | mov eax, ERROR_DISK_FULL |
1679 | mov eax, ERROR_DISK_FULL |
1678 | xor ebx, ebx |
1680 | xor ebx, ebx |
1679 | ret |
1681 | ret |
1680 | .found: |
1682 | .found: |
1681 | pop ecx edi esi |
1683 | pop ecx edi esi |
1682 | ; now find space in directory |
1684 | ; now find space in directory |
1683 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
1685 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
1684 | mov al, '~' |
1686 | mov al, '~' |
1685 | push ecx edi |
1687 | push ecx edi |
1686 | mov ecx, 8 |
1688 | mov ecx, 8 |
1687 | repnz scasb |
1689 | repnz scasb |
1688 | push 1 |
1690 | push 1 |
1689 | pop eax ; 1 entry |
1691 | pop eax ; 1 entry |
1690 | jnz .notilde |
1692 | jnz .notilde |
1691 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
1693 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
1692 | xor eax, eax |
1694 | xor eax, eax |
1693 | @@: |
1695 | @@: |
1694 | cmp byte [esi], 0 |
1696 | cmp byte [esi], 0 |
1695 | jz @f |
1697 | jz @f |
1696 | inc esi |
1698 | inc esi |
1697 | inc eax |
1699 | inc eax |
1698 | jmp @b |
1700 | jmp @b |
1699 | @@: |
1701 | @@: |
1700 | sub esi, eax |
1702 | sub esi, eax |
1701 | add eax, 12+13 |
1703 | add eax, 12+13 |
1702 | mov ecx, 13 |
1704 | mov ecx, 13 |
1703 | push edx |
1705 | push edx |
1704 | cdq |
1706 | cdq |
1705 | div ecx |
1707 | div ecx |
1706 | pop edx |
1708 | pop edx |
1707 | .notilde: |
1709 | .notilde: |
1708 | push -1 |
1710 | push -1 |
1709 | push -1 |
1711 | push -1 |
1710 | ; find |
1712 | ; find |
1711 | xor ecx, ecx |
1713 | xor ecx, ecx |
1712 | push eax |
1714 | push eax |
1713 | lea eax, [esp+12+8+12+8] |
1715 | lea eax, [esp+12+8+12+8] |
1714 | mov [eax], ebp |
1716 | mov [eax], ebp |
1715 | call dword [eax-4] |
1717 | call dword [eax-4] |
1716 | pop eax |
1718 | pop eax |
1717 | .scan_dir: |
1719 | .scan_dir: |
1718 | cmp byte [edi], 0 |
1720 | cmp byte [edi], 0 |
1719 | jz .free |
1721 | jz .free |
1720 | cmp byte [edi], 0xE5 |
1722 | cmp byte [edi], 0xE5 |
1721 | jz .free |
1723 | jz .free |
1722 | xor ecx, ecx |
1724 | xor ecx, ecx |
1723 | .scan_cont: |
1725 | .scan_cont: |
1724 | push eax |
1726 | push eax |
1725 | lea eax, [esp+12+8+12+8] |
1727 | lea eax, [esp+12+8+12+8] |
1726 | call dword [eax-8] |
1728 | call dword [eax-8] |
1727 | pop eax |
1729 | pop eax |
1728 | jnc .scan_dir |
1730 | jnc .scan_dir |
1729 | push eax |
1731 | push eax |
1730 | lea eax, [esp+12+8+12+8] |
1732 | lea eax, [esp+12+8+12+8] |
1731 | call dword [eax+8] ; extend directory |
1733 | call dword [eax+8] ; extend directory |
1732 | pop eax |
1734 | pop eax |
1733 | jnc .scan_dir |
1735 | jnc .scan_dir |
1734 | add esp, 8+8+12+20 |
1736 | add esp, 8+8+12+20 |
1735 | popad |
1737 | popad |
1736 | mov eax, ERROR_DISK_FULL |
1738 | mov eax, ERROR_DISK_FULL |
1737 | xor ebx, ebx |
1739 | xor ebx, ebx |
1738 | ret |
1740 | ret |
1739 | .free: |
1741 | .free: |
1740 | test ecx, ecx |
1742 | test ecx, ecx |
1741 | jnz @f |
1743 | jnz @f |
1742 | mov [esp], edi |
1744 | mov [esp], edi |
1743 | mov ecx, [esp+8+8+12+8] |
1745 | mov ecx, [esp+8+8+12+8] |
1744 | mov [esp+4], ecx |
1746 | mov [esp+4], ecx |
1745 | xor ecx, ecx |
1747 | xor ecx, ecx |
1746 | @@: |
1748 | @@: |
1747 | inc ecx |
1749 | inc ecx |
1748 | cmp ecx, eax |
1750 | cmp ecx, eax |
1749 | jb .scan_cont |
1751 | jb .scan_cont |
1750 | ; found! |
1752 | ; found! |
1751 | ; calculate name checksum |
1753 | ; calculate name checksum |
1752 | push esi ecx |
1754 | push esi ecx |
1753 | mov esi, [esp+8+8] |
1755 | mov esi, [esp+8+8] |
1754 | mov ecx, 11 |
1756 | mov ecx, 11 |
1755 | xor eax, eax |
1757 | xor eax, eax |
1756 | @@: |
1758 | @@: |
1757 | ror al, 1 |
1759 | ror al, 1 |
1758 | add al, [esi] |
1760 | add al, [esi] |
1759 | inc esi |
1761 | inc esi |
1760 | loop @b |
1762 | loop @b |
1761 | pop ecx esi |
1763 | pop ecx esi |
1762 | pop edi |
1764 | pop edi |
1763 | pop dword [esp+8+12+8] |
1765 | pop dword [esp+8+12+8] |
1764 | ; edi points to last entry in free chunk |
1766 | ; edi points to last entry in free chunk |
1765 | dec ecx |
1767 | dec ecx |
1766 | jz .nolfn |
1768 | jz .nolfn |
1767 | push esi |
1769 | push esi |
1768 | push eax |
1770 | push eax |
1769 | mov al, 40h |
1771 | mov al, 40h |
1770 | .writelfn: |
1772 | .writelfn: |
1771 | or al, cl |
1773 | or al, cl |
1772 | mov esi, [esp+4] |
1774 | mov esi, [esp+4] |
1773 | push ecx |
1775 | push ecx |
1774 | dec ecx |
1776 | dec ecx |
1775 | imul ecx, 13 |
1777 | imul ecx, 13 |
1776 | add esi, ecx |
1778 | add esi, ecx |
1777 | stosb |
1779 | stosb |
1778 | mov cl, 5 |
1780 | mov cl, 5 |
1779 | call .read_symbols |
1781 | call .read_symbols |
1780 | mov ax, 0xF |
1782 | mov ax, 0xF |
1781 | stosw |
1783 | stosw |
1782 | mov al, [esp+4] |
1784 | mov al, [esp+4] |
1783 | stosb |
1785 | stosb |
1784 | mov cl, 6 |
1786 | mov cl, 6 |
1785 | call .read_symbols |
1787 | call .read_symbols |
1786 | xor eax, eax |
1788 | xor eax, eax |
1787 | stosw |
1789 | stosw |
1788 | mov cl, 2 |
1790 | mov cl, 2 |
1789 | call .read_symbols |
1791 | call .read_symbols |
1790 | pop ecx |
1792 | pop ecx |
1791 | lea eax, [esp+8+8+12+8] |
1793 | lea eax, [esp+8+8+12+8] |
1792 | call dword [eax+4] ; next write |
1794 | call dword [eax+4] ; next write |
1793 | xor eax, eax |
1795 | xor eax, eax |
1794 | loop .writelfn |
1796 | loop .writelfn |
1795 | pop eax |
1797 | pop eax |
1796 | pop esi |
1798 | pop esi |
1797 | .nolfn: |
1799 | .nolfn: |
1798 | xchg esi, [esp] |
1800 | xchg esi, [esp] |
1799 | mov ecx, 11 |
1801 | mov ecx, 11 |
1800 | rep movsb |
1802 | rep movsb |
1801 | mov word [edi], 20h ; attributes |
1803 | mov word [edi], 20h ; attributes |
1802 | sub edi, 11 |
1804 | sub edi, 11 |
1803 | pop esi ecx |
1805 | pop esi ecx |
1804 | add esp, 12 |
1806 | add esp, 12 |
1805 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
1807 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
1806 | call get_time_for_file |
1808 | call get_time_for_file |
1807 | mov [edi+14], ax ; creation time |
1809 | mov [edi+14], ax ; creation time |
1808 | mov [edi+22], ax ; last write time |
1810 | mov [edi+22], ax ; last write time |
1809 | call get_date_for_file |
1811 | call get_date_for_file |
1810 | mov [edi+16], ax ; creation date |
1812 | mov [edi+16], ax ; creation date |
1811 | mov [edi+24], ax ; last write date |
1813 | mov [edi+24], ax ; last write date |
1812 | mov [edi+18], ax ; last access date |
1814 | mov [edi+18], ax ; last access date |
1813 | and word [edi+20], 0 ; high word of cluster |
1815 | and word [edi+20], 0 ; high word of cluster |
1814 | and word [edi+26], 0 ; low word of cluster - to be filled |
1816 | and word [edi+26], 0 ; low word of cluster - to be filled |
1815 | and dword [edi+28], 0 ; file size - to be filled |
1817 | and dword [edi+28], 0 ; file size - to be filled |
1816 | cmp byte [esp+20+28], 0 |
1818 | cmp byte [esp+20+28], 0 |
1817 | jz .doit |
1819 | jz .doit |
1818 | ; create directory |
1820 | ; create directory |
1819 | mov byte [edi+11], 10h ; attributes: folder |
1821 | mov byte [edi+11], 10h ; attributes: folder |
1820 | mov ecx, 32*2 |
1822 | mov ecx, 32*2 |
1821 | mov edx, edi |
1823 | mov edx, edi |
1822 | .doit: |
1824 | .doit: |
1823 | push edx |
1825 | push edx |
1824 | push ecx |
1826 | push ecx |
1825 | push edi |
1827 | push edi |
1826 | add edi, 26 ; edi points to low word of cluster |
1828 | add edi, 26 ; edi points to low word of cluster |
1827 | push edi |
1829 | push edi |
1828 | jecxz .done |
1830 | jecxz .done |
1829 | mov ecx, 2849 |
1831 | mov ecx, 2849 |
1830 | mov edi, RAMDISK_FAT |
1832 | mov edi, RAMDISK_FAT |
1831 | .write_loop: |
1833 | .write_loop: |
1832 | ; allocate new cluster |
1834 | ; allocate new cluster |
1833 | xor eax, eax |
1835 | xor eax, eax |
1834 | repnz scasw |
1836 | repnz scasw |
1835 | jnz .disk_full2 |
1837 | jnz .disk_full2 |
1836 | dec edi |
1838 | dec edi |
1837 | dec edi |
1839 | dec edi |
1838 | 1840 | ||
1839 | ; lea eax, [edi-(RAMDISK_FAT)] |
1841 | ; lea eax, [edi-(RAMDISK_FAT)] |
1840 | 1842 | ||
1841 | mov eax, edi |
1843 | mov eax, edi |
1842 | sub eax, RAMDISK_FAT |
1844 | sub eax, RAMDISK_FAT |
1843 | 1845 | ||
1844 | shr eax, 1 ; eax = cluster |
1846 | shr eax, 1 ; eax = cluster |
1845 | mov word [edi], 0xFFF ; mark as last cluster |
1847 | mov word [edi], 0xFFF ; mark as last cluster |
1846 | xchg edi, [esp] |
1848 | xchg edi, [esp] |
1847 | stosw |
1849 | stosw |
1848 | pop edi |
1850 | pop edi |
1849 | push edi |
1851 | push edi |
1850 | inc ecx |
1852 | inc ecx |
1851 | ; write data |
1853 | ; write data |
1852 | cmp byte [esp+16+20+28], 0 |
1854 | cmp byte [esp+16+20+28], 0 |
1853 | jnz .writedir |
1855 | jnz .writedir |
1854 | shl eax, 9 |
1856 | shl eax, 9 |
1855 | add eax, RAMDISK+31*512 |
1857 | add eax, RAMDISK+31*512 |
1856 | .writefile: |
1858 | .writefile: |
1857 | mov ebx, edx |
1859 | mov ebx, edx |
1858 | xchg eax, ebx |
1860 | xchg eax, ebx |
1859 | push ecx |
1861 | push ecx |
1860 | mov ecx, 512 |
1862 | mov ecx, 512 |
1861 | cmp dword [esp+12], ecx |
1863 | cmp dword [esp+12], ecx |
1862 | jae @f |
1864 | jae @f |
1863 | mov ecx, [esp+12] |
1865 | mov ecx, [esp+12] |
1864 | @@: |
1866 | @@: |
1865 | call memmove |
1867 | call memmove |
1866 | add edx, ecx |
1868 | add edx, ecx |
1867 | sub [esp+12], ecx |
1869 | sub [esp+12], ecx |
1868 | pop ecx |
1870 | pop ecx |
1869 | jnz .write_loop |
1871 | jnz .write_loop |
1870 | .done: |
1872 | .done: |
1871 | mov ebx, edx |
1873 | mov ebx, edx |
1872 | pop edi edi ecx edx |
1874 | pop edi edi ecx edx |
1873 | sub ebx, edx |
1875 | sub ebx, edx |
1874 | mov [edi+28], ebx |
1876 | mov [edi+28], ebx |
1875 | add esp, 20 |
1877 | add esp, 20 |
1876 | mov [esp+16], ebx |
1878 | mov [esp+16], ebx |
1877 | popad |
1879 | popad |
1878 | xor eax, eax |
1880 | xor eax, eax |
1879 | ret |
1881 | ret |
1880 | .disk_full2: |
1882 | .disk_full2: |
1881 | mov ebx, edx |
1883 | mov ebx, edx |
1882 | pop edi edi ecx edx |
1884 | pop edi edi ecx edx |
1883 | sub ebx, edx |
1885 | sub ebx, edx |
1884 | mov [edi+28], ebx |
1886 | mov [edi+28], ebx |
1885 | add esp, 20 |
1887 | add esp, 20 |
1886 | mov [esp+16], ebx |
1888 | mov [esp+16], ebx |
1887 | popad |
1889 | popad |
1888 | push ERROR_DISK_FULL |
1890 | push ERROR_DISK_FULL |
1889 | pop eax |
1891 | pop eax |
1890 | ret |
1892 | ret |
1891 | .writedir: |
1893 | .writedir: |
1892 | mov edi, eax |
1894 | mov edi, eax |
1893 | shl edi, 9 |
1895 | shl edi, 9 |
1894 | add edi, RAMDISK+31*512 |
1896 | add edi, RAMDISK+31*512 |
1895 | mov esi, edx |
1897 | mov esi, edx |
1896 | mov ecx, 32/4 |
1898 | mov ecx, 32/4 |
1897 | push ecx |
1899 | push ecx |
1898 | rep movsd |
1900 | rep movsd |
1899 | mov dword [edi-32], '. ' |
1901 | mov dword [edi-32], '. ' |
1900 | mov dword [edi-32+4], ' ' |
1902 | mov dword [edi-32+4], ' ' |
1901 | mov dword [edi-32+8], ' ' |
1903 | mov dword [edi-32+8], ' ' |
1902 | mov byte [edi-32+11], 10h |
1904 | mov byte [edi-32+11], 10h |
1903 | mov word [edi-32+26], ax |
1905 | mov word [edi-32+26], ax |
1904 | mov esi, edx |
1906 | mov esi, edx |
1905 | pop ecx |
1907 | pop ecx |
1906 | rep movsd |
1908 | rep movsd |
1907 | mov dword [edi-32], '.. ' |
1909 | mov dword [edi-32], '.. ' |
1908 | mov dword [edi-32+4], ' ' |
1910 | mov dword [edi-32+4], ' ' |
1909 | mov dword [edi-32+8], ' ' |
1911 | mov dword [edi-32+8], ' ' |
1910 | mov byte [edi-32+11], 10h |
1912 | mov byte [edi-32+11], 10h |
1911 | mov eax, [esp+16+8] |
1913 | mov eax, [esp+16+8] |
1912 | mov word [edi-32+26], ax |
1914 | mov word [edi-32+26], ax |
1913 | xor eax, eax |
1915 | xor eax, eax |
1914 | mov ecx, (512-32*2)/4 |
1916 | mov ecx, (512-32*2)/4 |
1915 | rep stosd |
1917 | rep stosd |
1916 | pop edi edi ecx edx |
1918 | pop edi edi ecx edx |
1917 | add esp, 20 |
1919 | add esp, 20 |
1918 | popad |
1920 | popad |
1919 | xor eax, eax |
1921 | xor eax, eax |
1920 | xor ebx, ebx |
1922 | xor ebx, ebx |
1921 | ret |
1923 | ret |
1922 | 1924 | ||
1923 | .read_symbol: |
1925 | .read_symbol: |
1924 | or ax, -1 |
1926 | or ax, -1 |
1925 | test esi, esi |
1927 | test esi, esi |
1926 | jz .retFFFF |
1928 | jz .retFFFF |
1927 | lodsb |
1929 | lodsb |
1928 | test al, al |
1930 | test al, al |
1929 | jnz ansi2uni_char |
1931 | jnz ansi2uni_char |
1930 | xor eax, eax |
1932 | xor eax, eax |
1931 | xor esi, esi |
1933 | xor esi, esi |
1932 | .retFFFF: |
1934 | .retFFFF: |
1933 | ret |
1935 | ret |
1934 | 1936 | ||
1935 | .read_symbols: |
1937 | .read_symbols: |
1936 | call .read_symbol |
1938 | call .read_symbol |
1937 | stosw |
1939 | stosw |
1938 | loop .read_symbols |
1940 | loop .read_symbols |
1939 | ret |
1941 | ret |
1940 | 1942 | ||
1941 | ;---------------------------------------------------------------- |
1943 | ;---------------------------------------------------------------- |
1942 | ; |
1944 | ; |
1943 | ; fs_RamdiskWrite - LFN variant for writing to sys floppy |
1945 | ; fs_RamdiskWrite - LFN variant for writing to sys floppy |
1944 | ; |
1946 | ; |
1945 | ; esi points to filename |
1947 | ; esi points to filename |
1946 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1948 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1947 | ; may be ebx=0 - start from first byte |
1949 | ; may be ebx=0 - start from first byte |
1948 | ; ecx number of bytes to write, 0+ |
1950 | ; ecx number of bytes to write, 0+ |
1949 | ; edx mem location to data |
1951 | ; edx mem location to data |
1950 | ; |
1952 | ; |
1951 | ; ret ebx = bytes written (maybe 0) |
1953 | ; ret ebx = bytes written (maybe 0) |
1952 | ; eax = 0 ok write or other = errormsg |
1954 | ; eax = 0 ok write or other = errormsg |
1953 | ; |
1955 | ; |
1954 | ;-------------------------------------------------------------- |
1956 | ;-------------------------------------------------------------- |
1955 | @@: |
1957 | @@: |
1956 | push ERROR_ACCESS_DENIED |
1958 | push ERROR_ACCESS_DENIED |
1957 | fs_RamdiskWrite.ret0: |
1959 | fs_RamdiskWrite.ret0: |
1958 | pop eax |
1960 | pop eax |
1959 | xor ebx, ebx |
1961 | xor ebx, ebx |
1960 | ret |
1962 | ret |
1961 | 1963 | ||
1962 | fs_RamdiskWrite: |
1964 | fs_RamdiskWrite: |
1963 | cmp byte [esi], 0 |
1965 | cmp byte [esi], 0 |
1964 | jz @b |
1966 | jz @b |
1965 | pushad |
1967 | pushad |
1966 | call rd_find_lfn |
1968 | call rd_find_lfn |
1967 | jnc .found |
1969 | jnc .found |
1968 | popad |
1970 | popad |
1969 | push ERROR_FILE_NOT_FOUND |
1971 | push ERROR_FILE_NOT_FOUND |
1970 | jmp .ret0 |
1972 | jmp .ret0 |
1971 | .found: |
1973 | .found: |
1972 | ; must not be directory |
1974 | ; must not be directory |
1973 | test byte [edi+11], 10h |
1975 | test byte [edi+11], 10h |
1974 | jz @f |
1976 | jz @f |
1975 | popad |
1977 | popad |
1976 | push ERROR_ACCESS_DENIED |
1978 | push ERROR_ACCESS_DENIED |
1977 | jmp .ret0 |
1979 | jmp .ret0 |
1978 | @@: |
1980 | @@: |
1979 | ; FAT does not support files larger than 4GB |
1981 | ; FAT does not support files larger than 4GB |
1980 | test ebx, ebx |
1982 | test ebx, ebx |
1981 | jz .l1 |
1983 | jz .l1 |
1982 | cmp dword [ebx+4], 0 |
1984 | cmp dword [ebx+4], 0 |
1983 | jz @f |
1985 | jz @f |
1984 | .eof: |
1986 | .eof: |
1985 | popad |
1987 | popad |
1986 | push ERROR_END_OF_FILE |
1988 | push ERROR_END_OF_FILE |
1987 | jmp .ret0 |
1989 | jmp .ret0 |
1988 | @@: |
1990 | @@: |
1989 | mov ebx, [ebx] |
1991 | mov ebx, [ebx] |
1990 | .l1: |
1992 | .l1: |
1991 | ; now edi points to direntry, ebx=start byte to write, |
1993 | ; now edi points to direntry, ebx=start byte to write, |
1992 | ; ecx=number of bytes to write, edx=data pointer |
1994 | ; ecx=number of bytes to write, edx=data pointer |
1993 | call fat_update_datetime |
1995 | call fat_update_datetime |
1994 | 1996 | ||
1995 | ; extend file if needed |
1997 | ; extend file if needed |
1996 | add ecx, ebx |
1998 | add ecx, ebx |
1997 | jc .eof ; FAT does not support files larger than 4GB |
1999 | jc .eof ; FAT does not support files larger than 4GB |
1998 | push 0 ; return value=0 |
2000 | push 0 ; return value=0 |
1999 | cmp ecx, [edi+28] |
2001 | cmp ecx, [edi+28] |
2000 | jbe .length_ok |
2002 | jbe .length_ok |
2001 | cmp ecx, ebx |
2003 | cmp ecx, ebx |
2002 | jz .length_ok |
2004 | jz .length_ok |
2003 | call ramdisk_extend_file |
2005 | call ramdisk_extend_file |
2004 | jnc .length_ok |
2006 | jnc .length_ok |
2005 | ; ramdisk_extend_file can return two error codes: FAT table error or disk full. |
2007 | ; ramdisk_extend_file can return two error codes: FAT table error or disk full. |
2006 | ; First case is fatal error, in second case we may write some data |
2008 | ; First case is fatal error, in second case we may write some data |
2007 | mov [esp], eax |
2009 | mov [esp], eax |
2008 | cmp al, ERROR_DISK_FULL |
2010 | cmp al, ERROR_DISK_FULL |
2009 | jz .disk_full |
2011 | jz .disk_full |
2010 | pop eax |
2012 | pop eax |
2011 | mov [esp+28], eax |
2013 | mov [esp+28], eax |
2012 | popad |
2014 | popad |
2013 | xor ebx, ebx |
2015 | xor ebx, ebx |
2014 | ret |
2016 | ret |
2015 | .disk_full: |
2017 | .disk_full: |
2016 | ; correct number of bytes to write |
2018 | ; correct number of bytes to write |
2017 | mov ecx, [edi+28] |
2019 | mov ecx, [edi+28] |
2018 | cmp ecx, ebx |
2020 | cmp ecx, ebx |
2019 | ja .length_ok |
2021 | ja .length_ok |
2020 | .ret: |
2022 | .ret: |
2021 | pop eax |
2023 | pop eax |
2022 | mov [esp+28], eax ; eax=return value |
2024 | mov [esp+28], eax ; eax=return value |
2023 | sub edx, [esp+20] |
2025 | sub edx, [esp+20] |
2024 | mov [esp+16], edx ; ebx=number of written bytes |
2026 | mov [esp+16], edx ; ebx=number of written bytes |
2025 | popad |
2027 | popad |
2026 | ret |
2028 | ret |
2027 | .length_ok: |
2029 | .length_ok: |
2028 | ; now ebx=start pos, ecx=end pos, both lie inside file |
2030 | ; now ebx=start pos, ecx=end pos, both lie inside file |
2029 | sub ecx, ebx |
2031 | sub ecx, ebx |
2030 | jz .ret |
2032 | jz .ret |
2031 | movzx edi, word [edi+26] ; starting cluster |
2033 | movzx edi, word [edi+26] ; starting cluster |
2032 | .write_loop: |
2034 | .write_loop: |
2033 | sub ebx, 0x200 |
2035 | sub ebx, 0x200 |
2034 | jae .next_cluster |
2036 | jae .next_cluster |
2035 | push ecx |
2037 | push ecx |
2036 | neg ebx |
2038 | neg ebx |
2037 | cmp ecx, ebx |
2039 | cmp ecx, ebx |
2038 | jbe @f |
2040 | jbe @f |
2039 | mov ecx, ebx |
2041 | mov ecx, ebx |
2040 | @@: |
2042 | @@: |
2041 | mov eax, edi |
2043 | mov eax, edi |
2042 | shl eax, 9 |
2044 | shl eax, 9 |
2043 | add eax, RAMDISK+31*512+0x200 |
2045 | add eax, RAMDISK+31*512+0x200 |
2044 | sub eax, ebx |
2046 | sub eax, ebx |
2045 | mov ebx, eax |
2047 | mov ebx, eax |
2046 | mov eax, edx |
2048 | mov eax, edx |
2047 | call memmove |
2049 | call memmove |
2048 | xor ebx, ebx |
2050 | xor ebx, ebx |
2049 | add edx, ecx |
2051 | add edx, ecx |
2050 | sub [esp], ecx |
2052 | sub [esp], ecx |
2051 | pop ecx |
2053 | pop ecx |
2052 | jz .ret |
2054 | jz .ret |
2053 | .next_cluster: |
2055 | .next_cluster: |
2054 | movzx edi, word [edi*2+RAMDISK_FAT] |
2056 | movzx edi, word [edi*2+RAMDISK_FAT] |
2055 | jmp .write_loop |
2057 | jmp .write_loop |
2056 | 2058 | ||
2057 | ramdisk_extend_file.zero_size: |
2059 | ramdisk_extend_file.zero_size: |
2058 | xor eax, eax |
2060 | xor eax, eax |
2059 | jmp ramdisk_extend_file.start_extend |
2061 | jmp ramdisk_extend_file.start_extend |
2060 | 2062 | ||
2061 | ; extends file on ramdisk to given size, new data area is filled by 0 |
2063 | ; extends file on ramdisk to given size, new data area is filled by 0 |
2062 | ; in: edi->direntry, ecx=new size |
2064 | ; in: edi->direntry, ecx=new size |
2063 | ; out: CF=0 => OK, eax=0 |
2065 | ; out: CF=0 => OK, eax=0 |
2064 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL) |
2066 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL) |
2065 | ramdisk_extend_file: |
2067 | ramdisk_extend_file: |
2066 | push ecx |
2068 | push ecx |
2067 | ; find the last cluster of file |
2069 | ; find the last cluster of file |
2068 | movzx eax, word [edi+26] ; first cluster |
2070 | movzx eax, word [edi+26] ; first cluster |
2069 | mov ecx, [edi+28] |
2071 | mov ecx, [edi+28] |
2070 | jecxz .zero_size |
2072 | jecxz .zero_size |
2071 | @@: |
2073 | @@: |
2072 | sub ecx, 0x200 |
2074 | sub ecx, 0x200 |
2073 | jbe @f |
2075 | jbe @f |
2074 | mov eax, [eax*2+RAMDISK_FAT] |
2076 | mov eax, [eax*2+RAMDISK_FAT] |
2075 | and eax, 0xFFF |
2077 | and eax, 0xFFF |
2076 | jz .fat_err |
2078 | jz .fat_err |
2077 | cmp eax, 0xFF8 |
2079 | cmp eax, 0xFF8 |
2078 | jb @b |
2080 | jb @b |
2079 | .fat_err: |
2081 | .fat_err: |
2080 | pop ecx |
2082 | pop ecx |
2081 | push ERROR_FAT_TABLE |
2083 | push ERROR_FAT_TABLE |
2082 | pop eax |
2084 | pop eax |
2083 | stc |
2085 | stc |
2084 | ret |
2086 | ret |
2085 | @@: |
2087 | @@: |
2086 | push eax |
2088 | push eax |
2087 | mov eax, [eax*2+RAMDISK_FAT] |
2089 | mov eax, [eax*2+RAMDISK_FAT] |
2088 | and eax, 0xFFF |
2090 | and eax, 0xFFF |
2089 | cmp eax, 0xFF8 |
2091 | cmp eax, 0xFF8 |
2090 | pop eax |
2092 | pop eax |
2091 | jb .fat_err |
2093 | jb .fat_err |
2092 | ; set length to full number of sectors and make sure that last sector is zero-padded |
2094 | ; set length to full number of sectors and make sure that last sector is zero-padded |
2093 | sub [edi+28], ecx |
2095 | sub [edi+28], ecx |
2094 | push eax edi |
2096 | push eax edi |
2095 | mov edi, eax |
2097 | mov edi, eax |
2096 | shl edi, 9 |
2098 | shl edi, 9 |
2097 | lea edi, [edi+RAMDISK+31*512+0x200+ecx] |
2099 | lea edi, [edi+RAMDISK+31*512+0x200+ecx] |
2098 | neg ecx |
2100 | neg ecx |
2099 | xor eax, eax |
2101 | xor eax, eax |
2100 | rep stosb |
2102 | rep stosb |
2101 | pop edi eax |
2103 | pop edi eax |
2102 | .start_extend: |
2104 | .start_extend: |
2103 | pop ecx |
2105 | pop ecx |
2104 | ; now do extend |
2106 | ; now do extend |
2105 | push edx esi |
2107 | push edx esi |
2106 | mov esi, RAMDISK_FAT+2*2 ; start scan from cluster 2 |
2108 | mov esi, RAMDISK_FAT+2*2 ; start scan from cluster 2 |
2107 | mov edx, 2847 ; number of clusters to scan |
2109 | mov edx, 2847 ; number of clusters to scan |
2108 | .extend_loop: |
2110 | .extend_loop: |
2109 | cmp [edi+28], ecx |
2111 | cmp [edi+28], ecx |
2110 | jae .extend_done |
2112 | jae .extend_done |
2111 | ; add new sector |
2113 | ; add new sector |
2112 | push ecx |
2114 | push ecx |
2113 | mov ecx, edx |
2115 | mov ecx, edx |
2114 | push edi |
2116 | push edi |
2115 | mov edi, esi |
2117 | mov edi, esi |
2116 | jecxz .disk_full |
2118 | jecxz .disk_full |
2117 | push eax |
2119 | push eax |
2118 | xor eax, eax |
2120 | xor eax, eax |
2119 | repnz scasw |
2121 | repnz scasw |
2120 | pop eax |
2122 | pop eax |
2121 | jnz .disk_full |
2123 | jnz .disk_full |
2122 | mov word [edi-2], 0xFFF |
2124 | mov word [edi-2], 0xFFF |
2123 | mov esi, edi |
2125 | mov esi, edi |
2124 | mov edx, ecx |
2126 | mov edx, ecx |
2125 | sub edi, RAMDISK_FAT |
2127 | sub edi, RAMDISK_FAT |
2126 | shr edi, 1 |
2128 | shr edi, 1 |
2127 | dec edi ; now edi=new cluster |
2129 | dec edi ; now edi=new cluster |
2128 | test eax, eax |
2130 | test eax, eax |
2129 | jz .first_cluster |
2131 | jz .first_cluster |
2130 | mov [RAMDISK_FAT+eax*2], di |
2132 | mov [RAMDISK_FAT+eax*2], di |
2131 | jmp @f |
2133 | jmp @f |
2132 | .first_cluster: |
2134 | .first_cluster: |
2133 | pop eax ; eax->direntry |
2135 | pop eax ; eax->direntry |
2134 | push eax |
2136 | push eax |
2135 | mov [eax+26], di |
2137 | mov [eax+26], di |
2136 | @@: |
2138 | @@: |
2137 | push edi |
2139 | push edi |
2138 | shl edi, 9 |
2140 | shl edi, 9 |
2139 | add edi, RAMDISK+31*512 |
2141 | add edi, RAMDISK+31*512 |
2140 | xor eax, eax |
2142 | xor eax, eax |
2141 | mov ecx, 512/4 |
2143 | mov ecx, 512/4 |
2142 | rep stosd |
2144 | rep stosd |
2143 | pop eax ; eax=new cluster |
2145 | pop eax ; eax=new cluster |
2144 | pop edi ; edi->direntry |
2146 | pop edi ; edi->direntry |
2145 | pop ecx ; ecx=required size |
2147 | pop ecx ; ecx=required size |
2146 | add dword [edi+28], 0x200 |
2148 | add dword [edi+28], 0x200 |
2147 | jmp .extend_loop |
2149 | jmp .extend_loop |
2148 | .extend_done: |
2150 | .extend_done: |
2149 | mov [edi+28], ecx |
2151 | mov [edi+28], ecx |
2150 | pop esi edx |
2152 | pop esi edx |
2151 | xor eax, eax ; CF=0 |
2153 | xor eax, eax ; CF=0 |
2152 | ret |
2154 | ret |
2153 | .disk_full: |
2155 | .disk_full: |
2154 | pop edi ecx |
2156 | pop edi ecx |
2155 | pop esi edx |
2157 | pop esi edx |
2156 | stc |
2158 | stc |
2157 | push ERROR_DISK_FULL |
2159 | push ERROR_DISK_FULL |
2158 | pop eax |
2160 | pop eax |
2159 | ret |
2161 | ret |
2160 | 2162 | ||
2161 | fat_update_datetime: |
2163 | fat_update_datetime: |
2162 | call get_time_for_file |
2164 | call get_time_for_file |
2163 | mov [edi+22], ax ; last write time |
2165 | mov [edi+22], ax ; last write time |
2164 | call get_date_for_file |
2166 | call get_date_for_file |
2165 | mov [edi+24], ax ; last write date |
2167 | mov [edi+24], ax ; last write date |
2166 | mov [edi+18], ax ; last access date |
2168 | mov [edi+18], ax ; last access date |
2167 | ret |
2169 | ret |
2168 | 2170 | ||
2169 | ;---------------------------------------------------------------- |
2171 | ;---------------------------------------------------------------- |
2170 | ; |
2172 | ; |
2171 | ; fs_RamdiskSetFileEnd - set end of file on ramdisk |
2173 | ; fs_RamdiskSetFileEnd - set end of file on ramdisk |
2172 | ; |
2174 | ; |
2173 | ; esi points to filename |
2175 | ; esi points to filename |
2174 | ; ebx points to 64-bit number = new file size |
2176 | ; ebx points to 64-bit number = new file size |
2175 | ; ecx ignored (reserved) |
2177 | ; ecx ignored (reserved) |
2176 | ; edx ignored (reserved) |
2178 | ; edx ignored (reserved) |
2177 | ; |
2179 | ; |
2178 | ; ret eax = 0 ok or other = errormsg |
2180 | ; ret eax = 0 ok or other = errormsg |
2179 | ; |
2181 | ; |
2180 | ;-------------------------------------------------------------- |
2182 | ;-------------------------------------------------------------- |
2181 | fs_RamdiskSetFileEnd: |
2183 | fs_RamdiskSetFileEnd: |
2182 | cmp byte [esi], 0 |
2184 | cmp byte [esi], 0 |
2183 | jnz @f |
2185 | jnz @f |
2184 | .access_denied: |
2186 | .access_denied: |
2185 | push ERROR_ACCESS_DENIED |
2187 | push ERROR_ACCESS_DENIED |
2186 | jmp .ret |
2188 | jmp .ret |
2187 | @@: |
2189 | @@: |
2188 | push edi |
2190 | push edi |
2189 | call rd_find_lfn |
2191 | call rd_find_lfn |
2190 | jnc @f |
2192 | jnc @f |
2191 | pop edi |
2193 | pop edi |
2192 | push ERROR_FILE_NOT_FOUND |
2194 | push ERROR_FILE_NOT_FOUND |
2193 | .ret: |
2195 | .ret: |
2194 | pop eax |
2196 | pop eax |
2195 | ret |
2197 | ret |
2196 | @@: |
2198 | @@: |
2197 | ; must not be directory |
2199 | ; must not be directory |
2198 | test byte [edi+11], 10h |
2200 | test byte [edi+11], 10h |
2199 | jz @f |
2201 | jz @f |
2200 | pop edi |
2202 | pop edi |
2201 | jmp .access_denied |
2203 | jmp .access_denied |
2202 | @@: |
2204 | @@: |
2203 | ; file size must not exceed 4Gb |
2205 | ; file size must not exceed 4Gb |
2204 | cmp dword [ebx+4], 0 |
2206 | cmp dword [ebx+4], 0 |
2205 | jz @f |
2207 | jz @f |
2206 | pop edi |
2208 | pop edi |
2207 | push ERROR_END_OF_FILE |
2209 | push ERROR_END_OF_FILE |
2208 | jmp .ret |
2210 | jmp .ret |
2209 | @@: |
2211 | @@: |
2210 | ; set file modification date/time to current |
2212 | ; set file modification date/time to current |
2211 | call fat_update_datetime |
2213 | call fat_update_datetime |
2212 | mov eax, [ebx] |
2214 | mov eax, [ebx] |
2213 | cmp eax, [edi+28] |
2215 | cmp eax, [edi+28] |
2214 | jb .truncate |
2216 | jb .truncate |
2215 | ja .expand |
2217 | ja .expand |
2216 | pop edi |
2218 | pop edi |
2217 | xor eax, eax |
2219 | xor eax, eax |
2218 | ret |
2220 | ret |
2219 | .expand: |
2221 | .expand: |
2220 | push ecx |
2222 | push ecx |
2221 | mov ecx, eax |
2223 | mov ecx, eax |
2222 | call ramdisk_extend_file |
2224 | call ramdisk_extend_file |
2223 | pop ecx |
2225 | pop ecx |
2224 | pop edi |
2226 | pop edi |
2225 | ret |
2227 | ret |
2226 | .truncate: |
2228 | .truncate: |
2227 | mov [edi+28], eax |
2229 | mov [edi+28], eax |
2228 | push ecx |
2230 | push ecx |
2229 | movzx ecx, word [edi+26] |
2231 | movzx ecx, word [edi+26] |
2230 | test eax, eax |
2232 | test eax, eax |
2231 | jz .zero_size |
2233 | jz .zero_size |
2232 | ; find new last sector |
2234 | ; find new last sector |
2233 | @@: |
2235 | @@: |
2234 | sub eax, 0x200 |
2236 | sub eax, 0x200 |
2235 | jbe @f |
2237 | jbe @f |
2236 | movzx ecx, word [RAMDISK_FAT+ecx*2] |
2238 | movzx ecx, word [RAMDISK_FAT+ecx*2] |
2237 | jmp @b |
2239 | jmp @b |
2238 | @@: |
2240 | @@: |
2239 | ; zero data at the end of last sector |
2241 | ; zero data at the end of last sector |
2240 | push ecx |
2242 | push ecx |
2241 | mov edi, ecx |
2243 | mov edi, ecx |
2242 | shl edi, 9 |
2244 | shl edi, 9 |
2243 | lea edi, [edi+RAMDISK+31*512+eax+0x200] |
2245 | lea edi, [edi+RAMDISK+31*512+eax+0x200] |
2244 | mov ecx, eax |
2246 | mov ecx, eax |
2245 | neg ecx |
2247 | neg ecx |
2246 | xor eax, eax |
2248 | xor eax, eax |
2247 | rep stosb |
2249 | rep stosb |
2248 | pop ecx |
2250 | pop ecx |
2249 | ; terminate FAT chain |
2251 | ; terminate FAT chain |
2250 | lea ecx, [RAMDISK_FAT+ecx+ecx] |
2252 | lea ecx, [RAMDISK_FAT+ecx+ecx] |
2251 | push dword [ecx] |
2253 | push dword [ecx] |
2252 | mov word [ecx], 0xFFF |
2254 | mov word [ecx], 0xFFF |
2253 | pop ecx |
2255 | pop ecx |
2254 | and ecx, 0xFFF |
2256 | and ecx, 0xFFF |
2255 | jmp .delete |
2257 | jmp .delete |
2256 | .zero_size: |
2258 | .zero_size: |
2257 | and word [edi+26], 0 |
2259 | and word [edi+26], 0 |
2258 | .delete: |
2260 | .delete: |
2259 | ; delete FAT chain starting with ecx |
2261 | ; delete FAT chain starting with ecx |
2260 | ; mark all clusters as free |
2262 | ; mark all clusters as free |
2261 | cmp ecx, 0xFF8 |
2263 | cmp ecx, 0xFF8 |
2262 | jae .deleted |
2264 | jae .deleted |
2263 | lea ecx, [RAMDISK_FAT+ecx+ecx] |
2265 | lea ecx, [RAMDISK_FAT+ecx+ecx] |
2264 | push dword [ecx] |
2266 | push dword [ecx] |
2265 | and word [ecx], 0 |
2267 | and word [ecx], 0 |
2266 | pop ecx |
2268 | pop ecx |
2267 | and ecx, 0xFFF |
2269 | and ecx, 0xFFF |
2268 | jmp .delete |
2270 | jmp .delete |
2269 | .deleted: |
2271 | .deleted: |
2270 | pop ecx |
2272 | pop ecx |
2271 | pop edi |
2273 | pop edi |
2272 | xor eax, eax |
2274 | xor eax, eax |
2273 | ret |
2275 | ret |
2274 | 2276 | ||
2275 | fs_RamdiskGetFileInfo: |
2277 | fs_RamdiskGetFileInfo: |
2276 | cmp byte [esi], 0 |
2278 | cmp byte [esi], 0 |
2277 | jnz @f |
2279 | jnz @f |
2278 | mov eax, 2 ; unsupported |
2280 | mov eax, 2 ; unsupported |
2279 | ret |
2281 | ret |
2280 | @@: |
2282 | @@: |
2281 | push edi |
2283 | push edi |
2282 | call rd_find_lfn |
2284 | call rd_find_lfn |
2283 | fs_GetFileInfo_finish: |
2285 | fs_GetFileInfo_finish: |
2284 | jnc @f |
2286 | jnc @f |
2285 | pop edi |
2287 | pop edi |
2286 | mov eax, ERROR_FILE_NOT_FOUND |
2288 | mov eax, ERROR_FILE_NOT_FOUND |
2287 | ret |
2289 | ret |
2288 | @@: |
2290 | @@: |
2289 | push esi ebp |
2291 | push esi ebp |
2290 | xor ebp, ebp |
2292 | xor ebp, ebp |
2291 | mov esi, edx |
2293 | mov esi, edx |
2292 | and dword [esi+4], 0 |
2294 | and dword [esi+4], 0 |
2293 | call fat_entry_to_bdfe2 |
2295 | call fat_entry_to_bdfe2 |
2294 | pop ebp esi |
2296 | pop ebp esi |
2295 | pop edi |
2297 | pop edi |
2296 | xor eax, eax |
2298 | xor eax, eax |
2297 | ret |
2299 | ret |
2298 | 2300 | ||
2299 | fs_RamdiskSetFileInfo: |
2301 | fs_RamdiskSetFileInfo: |
2300 | cmp byte [esi], 0 |
2302 | cmp byte [esi], 0 |
2301 | jnz @f |
2303 | jnz @f |
2302 | mov eax, 2 ; unsupported |
2304 | mov eax, 2 ; unsupported |
2303 | ret |
2305 | ret |
2304 | @@: |
2306 | @@: |
2305 | push edi |
2307 | push edi |
2306 | call rd_find_lfn |
2308 | call rd_find_lfn |
2307 | jnc @f |
2309 | jnc @f |
2308 | pop edi |
2310 | pop edi |
2309 | mov eax, ERROR_FILE_NOT_FOUND |
2311 | mov eax, ERROR_FILE_NOT_FOUND |
2310 | ret |
2312 | ret |
2311 | @@: |
2313 | @@: |
2312 | call bdfe_to_fat_entry |
2314 | call bdfe_to_fat_entry |
2313 | pop edi |
2315 | pop edi |
2314 | xor eax, eax |
2316 | xor eax, eax |
2315 | ret |
2317 | ret |
2316 | 2318 | ||
2317 | ;---------------------------------------------------------------- |
2319 | ;---------------------------------------------------------------- |
2318 | ; |
2320 | ; |
2319 | ; fs_RamdiskDelete - delete file or empty folder from ramdisk |
2321 | ; fs_RamdiskDelete - delete file or empty folder from ramdisk |
2320 | ; |
2322 | ; |
2321 | ; esi points to filename |
2323 | ; esi points to filename |
2322 | ; |
2324 | ; |
2323 | ; ret eax = 0 ok or other = errormsg |
2325 | ; ret eax = 0 ok or other = errormsg |
2324 | ; |
2326 | ; |
2325 | ;-------------------------------------------------------------- |
2327 | ;-------------------------------------------------------------- |
2326 | fs_RamdiskDelete: |
2328 | fs_RamdiskDelete: |
2327 | cmp byte [esi], 0 |
2329 | cmp byte [esi], 0 |
2328 | jnz @f |
2330 | jnz @f |
2329 | ; cannot delete root! |
2331 | ; cannot delete root! |
2330 | .access_denied: |
2332 | .access_denied: |
2331 | push ERROR_ACCESS_DENIED |
2333 | push ERROR_ACCESS_DENIED |
2332 | .pop_ret: |
2334 | .pop_ret: |
2333 | pop eax |
2335 | pop eax |
2334 | ret |
2336 | ret |
2335 | @@: |
2337 | @@: |
2336 | and [rd_prev_sector], 0 |
2338 | and [rd_prev_sector], 0 |
2337 | and [rd_prev_prev_sector], 0 |
2339 | and [rd_prev_prev_sector], 0 |
2338 | push edi |
2340 | push edi |
2339 | call rd_find_lfn |
2341 | call rd_find_lfn |
2340 | jnc .found |
2342 | jnc .found |
2341 | pop edi |
2343 | pop edi |
2342 | push ERROR_FILE_NOT_FOUND |
2344 | push ERROR_FILE_NOT_FOUND |
2343 | jmp .pop_ret |
2345 | jmp .pop_ret |
2344 | .found: |
2346 | .found: |
2345 | cmp dword [edi], '. ' |
2347 | cmp dword [edi], '. ' |
2346 | jz .access_denied2 |
2348 | jz .access_denied2 |
2347 | cmp dword [edi], '.. ' |
2349 | cmp dword [edi], '.. ' |
2348 | jz .access_denied2 |
2350 | jz .access_denied2 |
2349 | test byte [edi+11], 10h |
2351 | test byte [edi+11], 10h |
2350 | jz .dodel |
2352 | jz .dodel |
2351 | ; we can delete only empty folders! |
2353 | ; we can delete only empty folders! |
2352 | movzx eax, word [edi+26] |
2354 | movzx eax, word [edi+26] |
2353 | push ebx |
2355 | push ebx |
2354 | mov ebx, eax |
2356 | mov ebx, eax |
2355 | shl ebx, 9 |
2357 | shl ebx, 9 |
2356 | add ebx, RAMDISK + 31*0x200 + 2*0x20 |
2358 | add ebx, RAMDISK + 31*0x200 + 2*0x20 |
2357 | .checkempty: |
2359 | .checkempty: |
2358 | cmp byte [ebx], 0 |
2360 | cmp byte [ebx], 0 |
2359 | jz .empty |
2361 | jz .empty |
2360 | cmp byte [ebx], 0xE5 |
2362 | cmp byte [ebx], 0xE5 |
2361 | jnz .notempty |
2363 | jnz .notempty |
2362 | add ebx, 0x20 |
2364 | add ebx, 0x20 |
2363 | test ebx, 0x1FF |
2365 | test ebx, 0x1FF |
2364 | jnz .checkempty |
2366 | jnz .checkempty |
2365 | movzx eax, word [RAMDISK_FAT + eax*2] |
2367 | movzx eax, word [RAMDISK_FAT + eax*2] |
2366 | test eax, eax |
2368 | test eax, eax |
2367 | jz .empty |
2369 | jz .empty |
2368 | mov ebx, eax |
2370 | mov ebx, eax |
2369 | shl ebx, 9 |
2371 | shl ebx, 9 |
2370 | add ebx, RAMDISK + 31*0x200 |
2372 | add ebx, RAMDISK + 31*0x200 |
2371 | jmp .checkempty |
2373 | jmp .checkempty |
2372 | .notempty: |
2374 | .notempty: |
2373 | pop ebx |
2375 | pop ebx |
2374 | .access_denied2: |
2376 | .access_denied2: |
2375 | pop edi |
2377 | pop edi |
2376 | jmp .access_denied |
2378 | jmp .access_denied |
2377 | .empty: |
2379 | .empty: |
2378 | pop ebx |
2380 | pop ebx |
2379 | .dodel: |
2381 | .dodel: |
2380 | movzx eax, word [edi+26] |
2382 | movzx eax, word [edi+26] |
2381 | ; delete folder entry |
2383 | ; delete folder entry |
2382 | mov byte [edi], 0xE5 |
2384 | mov byte [edi], 0xE5 |
2383 | ; delete LFN (if present) |
2385 | ; delete LFN (if present) |
2384 | .lfndel: |
2386 | .lfndel: |
2385 | test edi, 0x1FF |
2387 | test edi, 0x1FF |
2386 | jnz @f |
2388 | jnz @f |
2387 | cmp [rd_prev_sector], 0 |
2389 | cmp [rd_prev_sector], 0 |
2388 | jz @f |
2390 | jz @f |
2389 | cmp [rd_prev_sector], -1 |
2391 | cmp [rd_prev_sector], -1 |
2390 | jz .lfndone |
2392 | jz .lfndone |
2391 | mov edi, [rd_prev_sector] |
2393 | mov edi, [rd_prev_sector] |
2392 | push [rd_prev_prev_sector] |
2394 | push [rd_prev_prev_sector] |
2393 | pop [rd_prev_sector] |
2395 | pop [rd_prev_sector] |
2394 | or [rd_prev_prev_sector], -1 |
2396 | or [rd_prev_prev_sector], -1 |
2395 | shl edi, 9 |
2397 | shl edi, 9 |
2396 | add edi, RAMDISK + 31*0x200 + 0x200 |
2398 | add edi, RAMDISK + 31*0x200 + 0x200 |
2397 | @@: |
2399 | @@: |
2398 | sub edi, 0x20 |
2400 | sub edi, 0x20 |
2399 | cmp byte [edi], 0xE5 |
2401 | cmp byte [edi], 0xE5 |
2400 | jz .lfndone |
2402 | jz .lfndone |
2401 | cmp byte [edi+11], 0xF |
2403 | cmp byte [edi+11], 0xF |
2402 | jnz .lfndone |
2404 | jnz .lfndone |
2403 | mov byte [edi], 0xE5 |
2405 | mov byte [edi], 0xE5 |
2404 | jmp .lfndel |
2406 | jmp .lfndel |
2405 | .lfndone: |
2407 | .lfndone: |
2406 | ; delete FAT chain |
2408 | ; delete FAT chain |
2407 | test eax, eax |
2409 | test eax, eax |
2408 | jz .done |
2410 | jz .done |
2409 | lea eax, [RAMDISK_FAT + eax*2] |
2411 | lea eax, [RAMDISK_FAT + eax*2] |
2410 | push dword [eax] |
2412 | push dword [eax] |
2411 | and word [eax], 0 |
2413 | and word [eax], 0 |
2412 | pop eax |
2414 | pop eax |
2413 | and eax, 0xFFF |
2415 | and eax, 0xFFF |
2414 | jmp .lfndone |
2416 | jmp .lfndone |
2415 | .done: |
2417 | .done: |
2416 | pop edi |
2418 | pop edi |
2417 | xor eax, eax |
2419 | xor eax, eax |
2418 | ret |
2420 | ret |
2419 | 2421 | ||
2420 | ; \end{diamond}=>=>=>=>>->->-> |
2422 | ; \end{diamond}=>=>=>=>>->->-> |