Rev 335 | Go to most recent revision | Only display areas with differences | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 335 | Rev 379 | ||
---|---|---|---|
1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
2 | ;; ;; |
3 | ;; FAT32.INC ;; |
3 | ;; FAT32.INC ;; |
4 | ;; ;; |
4 | ;; ;; |
5 | ;; FAT16/32 functions for KolibriOS ;; |
5 | ;; FAT16/32 functions for KolibriOS ;; |
6 | ;; ;; |
6 | ;; ;; |
7 | ;; Copyright 2002 Paolo Minazzi, paolo.minazzi@inwind.it ;; |
7 | ;; Copyright 2002 Paolo Minazzi, paolo.minazzi@inwind.it ;; |
8 | ;; ;; |
8 | ;; ;; |
9 | ;; See file COPYING for details ;; |
9 | ;; See file COPYING for details ;; |
10 | ;; 04.02.2007 LFN create folder - diamond ;; |
10 | ;; 04.02.2007 LFN create folder - diamond ;; |
11 | ;; 08.10.2006 LFN delete file/folder - diamond ;; |
11 | ;; 08.10.2006 LFN delete file/folder - diamond ;; |
12 | ;; 20.08.2006 LFN set file size (truncate/extend) - diamond ;; |
12 | ;; 20.08.2006 LFN set file size (truncate/extend) - diamond ;; |
13 | ;; 17.08.2006 LFN write/append to file - diamond ;; |
13 | ;; 17.08.2006 LFN write/append to file - diamond ;; |
14 | ;; 23.06.2006 LFN start application - diamond ;; |
14 | ;; 23.06.2006 LFN start application - diamond ;; |
15 | ;; 15.06.2006 LFN get/set file/folder info - diamond ;; |
15 | ;; 15.06.2006 LFN get/set file/folder info - diamond ;; |
16 | ;; 27.05.2006 LFN create/rewrite file - diamond ;; |
16 | ;; 27.05.2006 LFN create/rewrite file - diamond ;; |
17 | ;; 04.05.2006 LFN read folder - diamond ;; |
17 | ;; 04.05.2006 LFN read folder - diamond ;; |
18 | ;; 29.04.2006 Elimination of hangup after the ;; |
18 | ;; 29.04.2006 Elimination of hangup after the ;; |
19 | ;; expiration hd_wait_timeout - Mario79 ;; |
19 | ;; expiration hd_wait_timeout - Mario79 ;; |
20 | ;; 23.04.2006 LFN read file - diamond ;; |
20 | ;; 23.04.2006 LFN read file - diamond ;; |
21 | ;; 28.01.2006 find all Fat16/32 partition in all input point ;; |
21 | ;; 28.01.2006 find all Fat16/32 partition in all input point ;; |
22 | ;; to MBR, see file part_set.inc - Mario79 ;; |
22 | ;; to MBR, see file part_set.inc - Mario79 ;; |
23 | ;; 15.01.2005 get file size/attr/date, file_append - ATV ;; |
23 | ;; 15.01.2005 get file size/attr/date, file_append - ATV ;; |
24 | ;; 04.12.2004 skip volume label, file delete bug fixed - ATV ;; |
24 | ;; 04.12.2004 skip volume label, file delete bug fixed - ATV ;; |
25 | ;; 29.11.2004 get_free_FAT changed, append dir bug fixed - ATV ;; |
25 | ;; 29.11.2004 get_free_FAT changed, append dir bug fixed - ATV ;; |
26 | ;; 23.11.2004 don't allow overwrite dir with file - ATV ;; |
26 | ;; 23.11.2004 don't allow overwrite dir with file - ATV ;; |
27 | ;; 18.11.2004 get_disk_info and more error codes - ATV ;; |
27 | ;; 18.11.2004 get_disk_info and more error codes - ATV ;; |
28 | ;; 17.11.2004 set_FAT/get_FAT and disk cache rewritten - ATV ;; |
28 | ;; 17.11.2004 set_FAT/get_FAT and disk cache rewritten - ATV ;; |
29 | ;; 10.11.2004 removedir clear whole directory structure - ATV ;; |
29 | ;; 10.11.2004 removedir clear whole directory structure - ATV ;; |
30 | ;; 08.11.2004 rename - ATV ;; |
30 | ;; 08.11.2004 rename - ATV ;; |
31 | ;; 30.10.2004 file_read return also dirsize in bytes - ATV ;; |
31 | ;; 30.10.2004 file_read return also dirsize in bytes - ATV ;; |
32 | ;; 20.10.2004 Makedir/Removedir - ATV ;; |
32 | ;; 20.10.2004 Makedir/Removedir - ATV ;; |
33 | ;; 14.10.2004 Partition chain/Fat16 - ATV (thanks drh3xx) ;; |
33 | ;; 14.10.2004 Partition chain/Fat16 - ATV (thanks drh3xx) ;; |
34 | ;; 06.9.2004 Fix free space by Mario79 added - MH ;; |
34 | ;; 06.9.2004 Fix free space by Mario79 added - MH ;; |
35 | ;; 24.5.2004 Write back buffer for File_write -VT ;; |
35 | ;; 24.5.2004 Write back buffer for File_write -VT ;; |
36 | ;; 20.5.2004 File_read function to work with syscall 58 - VT ;; |
36 | ;; 20.5.2004 File_read function to work with syscall 58 - VT ;; |
37 | ;; 30.3.2004 Error parameters at function return - VT ;; |
37 | ;; 30.3.2004 Error parameters at function return - VT ;; |
38 | ;; 01.5.2002 Bugfix in device write - VT ;; |
38 | ;; 01.5.2002 Bugfix in device write - VT ;; |
39 | ;; 20.5.2002 Hd status check - VT ;; |
39 | ;; 20.5.2002 Hd status check - VT ;; |
40 | ;; 29.6.2002 Improved fat32 verification - VT ;; |
40 | ;; 29.6.2002 Improved fat32 verification - VT ;; |
41 | ;; ;; |
41 | ;; ;; |
42 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
42 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
43 | 43 | ||
44 | cache_max equ 1919 ; max. is 1919*512+0x610000=0x6ffe00 |
44 | cache_max equ 1919 ; max. is 1919*512+0x610000=0x6ffe00 |
45 | 45 | ||
46 | ERROR_SUCCESS = 0 |
46 | ERROR_SUCCESS = 0 |
47 | ERROR_DISK_BASE = 1 |
47 | ERROR_DISK_BASE = 1 |
48 | ERROR_UNSUPPORTED_FS = 2 |
48 | ERROR_UNSUPPORTED_FS = 2 |
49 | ERROR_UNKNOWN_FS = 3 |
49 | ERROR_UNKNOWN_FS = 3 |
50 | ERROR_PARTITION = 4 |
50 | ERROR_PARTITION = 4 |
51 | ERROR_FILE_NOT_FOUND = 5 |
51 | ERROR_FILE_NOT_FOUND = 5 |
52 | ERROR_END_OF_FILE = 6 |
52 | ERROR_END_OF_FILE = 6 |
53 | ERROR_MEMORY_POINTER = 7 |
53 | ERROR_MEMORY_POINTER = 7 |
54 | ERROR_DISK_FULL = 8 |
54 | ERROR_DISK_FULL = 8 |
55 | ERROR_FAT_TABLE = 9 |
55 | ERROR_FAT_TABLE = 9 |
56 | ERROR_ACCESS_DENIED = 10 |
56 | ERROR_ACCESS_DENIED = 10 |
57 | 57 | ||
58 | PUSHAD_EAX equ [esp+28] |
58 | PUSHAD_EAX equ [esp+28] |
59 | PUSHAD_ECX equ [esp+24] |
59 | PUSHAD_ECX equ [esp+24] |
60 | PUSHAD_EDX equ [esp+20] |
60 | PUSHAD_EDX equ [esp+20] |
61 | PUSHAD_EBX equ [esp+16] |
61 | PUSHAD_EBX equ [esp+16] |
62 | PUSHAD_EBP equ [esp+8] |
62 | PUSHAD_EBP equ [esp+8] |
63 | PUSHAD_ESI equ [esp+4] |
63 | PUSHAD_ESI equ [esp+4] |
64 | PUSHAD_EDI equ [esp+0] |
64 | PUSHAD_EDI equ [esp+0] |
65 | 65 | ||
66 | uglobal |
66 | uglobal |
67 | align 4 |
67 | align 4 |
68 | cluster dd 0 ; used by file_write,makedir,append |
68 | cluster dd 0 ; used by file_write,makedir,append |
69 | partition_count dd 0 ; partitions found by set_FAT32_variables |
69 | partition_count dd 0 ; partitions found by set_FAT32_variables |
70 | longname_sec1 dd 0 ; used by analyze_directory to save 2 previous |
70 | longname_sec1 dd 0 ; used by analyze_directory to save 2 previous |
71 | longname_sec2 dd 0 ; directory sectors for delete long filename |
71 | longname_sec2 dd 0 ; directory sectors for delete long filename |
72 | 72 | ||
73 | hd_error dd 0 ; set by wait_for_sector_buffer |
73 | hd_error dd 0 ; set by wait_for_sector_buffer |
74 | hd_setup dd 0 |
74 | hd_setup dd 0 |
75 | hd_wait_timeout dd 0 |
75 | hd_wait_timeout dd 0 |
76 | 76 | ||
77 | cluster_tmp dd 0 ; used by analyze_directory |
77 | cluster_tmp dd 0 ; used by analyze_directory |
78 | ; and analyze_directory_to_write |
78 | ; and analyze_directory_to_write |
79 | 79 | ||
80 | file_size dd 0 ; used by file_read |
80 | file_size dd 0 ; used by file_read |
81 | 81 | ||
82 | sector_tmp dd 0 ; used by rename,append,file_write |
82 | sector_tmp dd 0 ; used by rename,append,file_write |
83 | entry_pos dd 0 ; used by rename,append,file_write |
83 | entry_pos dd 0 ; used by rename,append,file_write |
84 | 84 | ||
85 | old_filesize dd 0 ; used by append |
85 | old_filesize dd 0 ; used by append |
86 | new_filepos dd 0 ; used by append |
86 | new_filepos dd 0 ; used by append |
87 | bytes2write dd 0 ; used by append |
87 | bytes2write dd 0 ; used by append |
88 | 88 | ||
89 | cache_search_start dd 0 ; used by find_empty_slot |
89 | cache_search_start dd 0 ; used by find_empty_slot |
90 | endg |
90 | endg |
91 | 91 | ||
92 | iglobal |
92 | iglobal |
93 | fat_in_cache dd -1 |
93 | fat_in_cache dd -1 |
94 | endg |
94 | endg |
95 | 95 | ||
96 | uglobal |
96 | uglobal |
97 | align 4 |
97 | align 4 |
98 | fat_cache: times 512 db 0 |
98 | fat_cache: times 512 db 0 |
99 | Sector512: ; label for dev_hdcd.inc |
99 | Sector512: ; label for dev_hdcd.inc |
100 | buffer: times 512 db 0 |
100 | buffer: times 512 db 0 |
101 | fsinfo_buffer: times 512 db 0 |
101 | fsinfo_buffer: times 512 db 0 |
102 | endg |
102 | endg |
103 | 103 | ||
104 | uglobal |
104 | uglobal |
105 | dir_entry: times 32 db 0 |
105 | dir_entry: times 32 db 0 |
106 | 106 | ||
107 | startpath: times 255 db 0 |
107 | startpath: times 255 db 0 |
108 | 108 | ||
109 | fat16_root db 0 ; flag for fat16 rootdir |
109 | fat16_root db 0 ; flag for fat16 rootdir |
110 | fat_change db 0 ; 1=fat has changed |
110 | fat_change db 0 ; 1=fat has changed |
111 | 111 | ||
112 | endg |
112 | endg |
113 | 113 | ||
114 | reserve_hd1: |
114 | reserve_hd1: |
115 | 115 | ||
116 | cli |
116 | cli |
117 | cmp [hd1_status],0 |
117 | cmp [hd1_status],0 |
118 | je reserve_ok1 |
118 | je reserve_ok1 |
119 | 119 | ||
120 | sti |
120 | sti |
121 | call change_task |
121 | call change_task |
122 | jmp reserve_hd1 |
122 | jmp reserve_hd1 |
123 | 123 | ||
124 | reserve_ok1: |
124 | reserve_ok1: |
125 | 125 | ||
126 | push eax |
126 | push eax |
127 | mov eax,[0x3000] |
127 | mov eax,[CURRENT_TASK] |
128 | shl eax,5 |
128 | shl eax,5 |
129 | mov eax,[eax+0x3000+TASKDATA.pid] |
129 | mov eax,[eax+CURRENT_TASK+TASKDATA.pid] |
130 | mov [hd1_status],eax |
130 | mov [hd1_status],eax |
131 | pop eax |
131 | pop eax |
132 | sti |
132 | sti |
133 | ret |
133 | ret |
134 | ;******************************************** |
134 | ;******************************************** |
135 | 135 | ||
136 | uglobal |
136 | uglobal |
137 | hd_in_cache db ? |
137 | hd_in_cache db ? |
138 | endg |
138 | endg |
139 | 139 | ||
140 | reserve_hd_channel: |
140 | reserve_hd_channel: |
141 | cmp [hdbase], 0x1F0 |
141 | cmp [hdbase], 0x1F0 |
142 | jne .IDE_Channel_2 |
142 | jne .IDE_Channel_2 |
143 | .IDE_Channel_1: |
143 | .IDE_Channel_1: |
144 | cli |
144 | cli |
145 | cmp [IDE_Channel_1],0 |
145 | cmp [IDE_Channel_1],0 |
146 | je .reserve_ok_1 |
146 | je .reserve_ok_1 |
147 | sti |
147 | sti |
148 | call change_task |
148 | call change_task |
149 | jmp .IDE_Channel_1 |
149 | jmp .IDE_Channel_1 |
150 | .IDE_Channel_2: |
150 | .IDE_Channel_2: |
151 | cli |
151 | cli |
152 | cmp [IDE_Channel_2],0 |
152 | cmp [IDE_Channel_2],0 |
153 | je .reserve_ok_2 |
153 | je .reserve_ok_2 |
154 | sti |
154 | sti |
155 | call change_task |
155 | call change_task |
156 | jmp .IDE_Channel_2 |
156 | jmp .IDE_Channel_2 |
157 | .reserve_ok_1: |
157 | .reserve_ok_1: |
158 | mov [IDE_Channel_1], 1 |
158 | mov [IDE_Channel_1], 1 |
159 | push eax |
159 | push eax |
160 | mov al, 1 |
160 | mov al, 1 |
161 | jmp @f |
161 | jmp @f |
162 | .reserve_ok_2: |
162 | .reserve_ok_2: |
163 | mov [IDE_Channel_2], 1 |
163 | mov [IDE_Channel_2], 1 |
164 | push eax |
164 | push eax |
165 | mov al, 3 |
165 | mov al, 3 |
166 | @@: |
166 | @@: |
167 | cmp [hdid], 1 |
167 | cmp [hdid], 1 |
168 | sbb al, -1 |
168 | sbb al, -1 |
169 | cmp al, [hd_in_cache] |
169 | cmp al, [hd_in_cache] |
170 | jz @f |
170 | jz @f |
171 | mov [hd_in_cache], al |
171 | mov [hd_in_cache], al |
172 | call clear_hd_cache |
172 | call clear_hd_cache |
173 | @@: |
173 | @@: |
174 | pop eax |
174 | pop eax |
175 | ret |
175 | ret |
176 | 176 | ||
177 | free_hd_channel: |
177 | free_hd_channel: |
178 | cmp [hdbase], 0x1F0 |
178 | cmp [hdbase], 0x1F0 |
179 | jne .IDE_Channel_2 |
179 | jne .IDE_Channel_2 |
180 | .IDE_Channel_1: |
180 | .IDE_Channel_1: |
181 | mov [IDE_Channel_1],0 |
181 | mov [IDE_Channel_1],0 |
182 | ret |
182 | ret |
183 | .IDE_Channel_2: |
183 | .IDE_Channel_2: |
184 | mov [IDE_Channel_2],0 |
184 | mov [IDE_Channel_2],0 |
185 | ret |
185 | ret |
186 | ;******************************************** |
186 | ;******************************************** |
187 | problem_partition db 0 ; used for partitions search |
187 | problem_partition db 0 ; used for partitions search |
188 | 188 | ||
189 | include 'part_set.inc' |
189 | include 'part_set.inc' |
190 | 190 | ||
191 | set_FAT: |
191 | set_FAT: |
192 | ;-------------------------------- |
192 | ;-------------------------------- |
193 | ; input : EAX = cluster |
193 | ; input : EAX = cluster |
194 | ; EDX = value to save |
194 | ; EDX = value to save |
195 | ; output : EDX = old value |
195 | ; output : EDX = old value |
196 | ;-------------------------------- |
196 | ;-------------------------------- |
197 | push eax ebx esi |
197 | push eax ebx esi |
198 | 198 | ||
199 | cmp eax,2 |
199 | cmp eax,2 |
200 | jb sfc_error |
200 | jb sfc_error |
201 | cmp eax,[LAST_CLUSTER] |
201 | cmp eax,[LAST_CLUSTER] |
202 | ja sfc_error |
202 | ja sfc_error |
203 | cmp [fs_type],16 |
203 | cmp [fs_type],16 |
204 | je sfc_1 |
204 | je sfc_1 |
205 | add eax,eax |
205 | add eax,eax |
206 | sfc_1: |
206 | sfc_1: |
207 | add eax,eax |
207 | add eax,eax |
208 | mov esi,511 |
208 | mov esi,511 |
209 | and esi,eax ; esi = position in fat sector |
209 | and esi,eax ; esi = position in fat sector |
210 | shr eax,9 ; eax = fat sector |
210 | shr eax,9 ; eax = fat sector |
211 | add eax,[FAT_START] |
211 | add eax,[FAT_START] |
212 | mov ebx,fat_cache |
212 | mov ebx,fat_cache |
213 | 213 | ||
214 | cmp eax,[fat_in_cache] ; is fat sector already in memory? |
214 | cmp eax,[fat_in_cache] ; is fat sector already in memory? |
215 | je sfc_in_cache ; yes |
215 | je sfc_in_cache ; yes |
216 | 216 | ||
217 | cmp [fat_change],0 ; is fat changed? |
217 | cmp [fat_change],0 ; is fat changed? |
218 | je sfc_no_change ; no |
218 | je sfc_no_change ; no |
219 | call write_fat_sector ; yes. write it into disk |
219 | call write_fat_sector ; yes. write it into disk |
220 | cmp [hd_error],0 |
220 | cmp [hd_error],0 |
221 | jne sfc_error |
221 | jne sfc_error |
222 | 222 | ||
223 | sfc_no_change: |
223 | sfc_no_change: |
224 | mov [fat_in_cache],eax ; save fat sector |
224 | mov [fat_in_cache],eax ; save fat sector |
225 | call hd_read |
225 | call hd_read |
226 | cmp [hd_error],0 |
226 | cmp [hd_error],0 |
227 | jne sfc_error |
227 | jne sfc_error |
228 | 228 | ||
229 | 229 | ||
230 | sfc_in_cache: |
230 | sfc_in_cache: |
231 | cmp [fs_type],16 |
231 | cmp [fs_type],16 |
232 | jne sfc_test32 |
232 | jne sfc_test32 |
233 | 233 | ||
234 | sfc_set16: |
234 | sfc_set16: |
235 | xchg [ebx+esi],dx ; save new value and get old value |
235 | xchg [ebx+esi],dx ; save new value and get old value |
236 | jmp sfc_write |
236 | jmp sfc_write |
237 | 237 | ||
238 | sfc_test32: |
238 | sfc_test32: |
239 | mov eax,[fatMASK] |
239 | mov eax,[fatMASK] |
240 | 240 | ||
241 | sfc_set32: |
241 | sfc_set32: |
242 | and edx,eax |
242 | and edx,eax |
243 | xor eax,-1 ; mask for high bits |
243 | xor eax,-1 ; mask for high bits |
244 | and eax,[ebx+esi] ; get high 4 bits |
244 | and eax,[ebx+esi] ; get high 4 bits |
245 | or eax,edx |
245 | or eax,edx |
246 | mov edx,[ebx+esi] ; get old value |
246 | mov edx,[ebx+esi] ; get old value |
247 | mov [ebx+esi],eax ; save new value |
247 | mov [ebx+esi],eax ; save new value |
248 | 248 | ||
249 | sfc_write: |
249 | sfc_write: |
250 | mov [fat_change],1 ; fat has changed |
250 | mov [fat_change],1 ; fat has changed |
251 | 251 | ||
252 | sfc_nonzero: |
252 | sfc_nonzero: |
253 | and edx,[fatMASK] |
253 | and edx,[fatMASK] |
254 | 254 | ||
255 | sfc_error: |
255 | sfc_error: |
256 | pop esi ebx eax |
256 | pop esi ebx eax |
257 | ret |
257 | ret |
258 | 258 | ||
259 | 259 | ||
260 | get_FAT: |
260 | get_FAT: |
261 | ;-------------------------------- |
261 | ;-------------------------------- |
262 | ; input : EAX = cluster |
262 | ; input : EAX = cluster |
263 | ; output : EAX = next cluster |
263 | ; output : EAX = next cluster |
264 | ;-------------------------------- |
264 | ;-------------------------------- |
265 | push ebx esi |
265 | push ebx esi |
266 | 266 | ||
267 | cmp [fs_type],16 |
267 | cmp [fs_type],16 |
268 | je gfc_1 |
268 | je gfc_1 |
269 | add eax,eax |
269 | add eax,eax |
270 | gfc_1: |
270 | gfc_1: |
271 | add eax,eax |
271 | add eax,eax |
272 | mov esi,511 |
272 | mov esi,511 |
273 | and esi,eax ; esi = position in fat sector |
273 | and esi,eax ; esi = position in fat sector |
274 | shr eax,9 ; eax = fat sector |
274 | shr eax,9 ; eax = fat sector |
275 | add eax,[FAT_START] |
275 | add eax,[FAT_START] |
276 | mov ebx,fat_cache |
276 | mov ebx,fat_cache |
277 | 277 | ||
278 | cmp eax,[fat_in_cache] ; is fat sector already in memory? |
278 | cmp eax,[fat_in_cache] ; is fat sector already in memory? |
279 | je gfc_in_cache |
279 | je gfc_in_cache |
280 | 280 | ||
281 | cmp [fat_change],0 ; is fat changed? |
281 | cmp [fat_change],0 ; is fat changed? |
282 | je gfc_no_change ; no |
282 | je gfc_no_change ; no |
283 | call write_fat_sector ; yes. write it into disk |
283 | call write_fat_sector ; yes. write it into disk |
284 | cmp [hd_error],0 |
284 | cmp [hd_error],0 |
285 | jne hd_error_01 |
285 | jne hd_error_01 |
286 | 286 | ||
287 | gfc_no_change: |
287 | gfc_no_change: |
288 | mov [fat_in_cache],eax |
288 | mov [fat_in_cache],eax |
289 | call hd_read |
289 | call hd_read |
290 | cmp [hd_error],0 |
290 | cmp [hd_error],0 |
291 | jne hd_error_01 |
291 | jne hd_error_01 |
292 | 292 | ||
293 | gfc_in_cache: |
293 | gfc_in_cache: |
294 | mov eax,[ebx+esi] |
294 | mov eax,[ebx+esi] |
295 | and eax,[fatMASK] |
295 | and eax,[fatMASK] |
296 | hd_error_01: |
296 | hd_error_01: |
297 | pop esi ebx |
297 | pop esi ebx |
298 | ret |
298 | ret |
299 | 299 | ||
300 | 300 | ||
301 | get_free_FAT: |
301 | get_free_FAT: |
302 | ;----------------------------------------------------------- |
302 | ;----------------------------------------------------------- |
303 | ; input : EAX = # cluster for start the searching |
303 | ; input : EAX = # cluster for start the searching |
304 | ; output : if CARRY=0 EAX = # first cluster found free |
304 | ; output : if CARRY=0 EAX = # first cluster found free |
305 | ; if CARRY=1 disk full |
305 | ; if CARRY=1 disk full |
306 | ; Note : for more speed need to use fat_cache directly |
306 | ; Note : for more speed need to use fat_cache directly |
307 | ;----------------------------------------------------------- |
307 | ;----------------------------------------------------------- |
308 | push ecx |
308 | push ecx |
309 | mov ecx,[LAST_CLUSTER] ; counter for full disk |
309 | mov ecx,[LAST_CLUSTER] ; counter for full disk |
310 | sub ecx,2 |
310 | sub ecx,2 |
311 | 311 | ||
312 | gff_test: |
312 | gff_test: |
313 | cmp eax,[LAST_CLUSTER] ; if above last cluster start at cluster 2 |
313 | cmp eax,[LAST_CLUSTER] ; if above last cluster start at cluster 2 |
314 | jbe gff_in_range |
314 | jbe gff_in_range |
315 | mov eax,2 |
315 | mov eax,2 |
316 | 316 | ||
317 | gff_in_range: |
317 | gff_in_range: |
318 | push eax |
318 | push eax |
319 | call get_FAT ; get cluster state |
319 | call get_FAT ; get cluster state |
320 | cmp [hd_error],0 |
320 | cmp [hd_error],0 |
321 | jne gff_not_found_1 |
321 | jne gff_not_found_1 |
322 | 322 | ||
323 | test eax,eax ; is it free? |
323 | test eax,eax ; is it free? |
324 | pop eax |
324 | pop eax |
325 | je gff_found ; yes |
325 | je gff_found ; yes |
326 | inc eax ; next cluster |
326 | inc eax ; next cluster |
327 | dec ecx ; is all checked? |
327 | dec ecx ; is all checked? |
328 | jns gff_test ; no |
328 | jns gff_test ; no |
329 | 329 | ||
330 | gff_not_found_1: |
330 | gff_not_found_1: |
331 | add esp,4 |
331 | add esp,4 |
332 | gff_not_found: |
332 | gff_not_found: |
333 | pop ecx ; yes. disk is full |
333 | pop ecx ; yes. disk is full |
334 | stc |
334 | stc |
335 | ret |
335 | ret |
336 | 336 | ||
337 | gff_found: |
337 | gff_found: |
338 | pop ecx |
338 | pop ecx |
339 | clc |
339 | clc |
340 | ret |
340 | ret |
341 | 341 | ||
342 | 342 | ||
343 | write_fat_sector: |
343 | write_fat_sector: |
344 | ;----------------------------------------------------------- |
344 | ;----------------------------------------------------------- |
345 | ; write changed fat to disk |
345 | ; write changed fat to disk |
346 | ;----------------------------------------------------------- |
346 | ;----------------------------------------------------------- |
347 | push eax ebx ecx |
347 | push eax ebx ecx |
348 | 348 | ||
349 | mov [fat_change],0 |
349 | mov [fat_change],0 |
350 | mov eax,[fat_in_cache] |
350 | mov eax,[fat_in_cache] |
351 | cmp eax,-1 |
351 | cmp eax,-1 |
352 | jz write_fat_not_used |
352 | jz write_fat_not_used |
353 | mov ebx,fat_cache |
353 | mov ebx,fat_cache |
354 | mov ecx,[NUMBER_OF_FATS] |
354 | mov ecx,[NUMBER_OF_FATS] |
355 | 355 | ||
356 | write_next_fat: |
356 | write_next_fat: |
357 | call hd_write |
357 | call hd_write |
358 | cmp [hd_error],0 |
358 | cmp [hd_error],0 |
359 | jne write_fat_not_used |
359 | jne write_fat_not_used |
360 | 360 | ||
361 | add eax,[SECTORS_PER_FAT] |
361 | add eax,[SECTORS_PER_FAT] |
362 | dec ecx |
362 | dec ecx |
363 | jnz write_next_fat |
363 | jnz write_next_fat |
364 | 364 | ||
365 | write_fat_not_used: |
365 | write_fat_not_used: |
366 | pop ecx ebx eax |
366 | pop ecx ebx eax |
367 | ret |
367 | ret |
368 | 368 | ||
369 | 369 | ||
370 | analyze_directory: |
370 | analyze_directory: |
371 | ;----------------------------------------------------------- |
371 | ;----------------------------------------------------------- |
372 | ; input : EAX = first cluster of the directory |
372 | ; input : EAX = first cluster of the directory |
373 | ; EBX = pointer to filename |
373 | ; EBX = pointer to filename |
374 | ; output : IF CARRY=0 EAX = sector where th file is found |
374 | ; output : IF CARRY=0 EAX = sector where th file is found |
375 | ; EBX = pointer in buffer |
375 | ; EBX = pointer in buffer |
376 | ; [buffer .. buffer+511] |
376 | ; [buffer .. buffer+511] |
377 | ; ECX,EDX,ESI,EDI not changed |
377 | ; ECX,EDX,ESI,EDI not changed |
378 | ; IF CARRY=1 filename not found |
378 | ; IF CARRY=1 filename not found |
379 | ; Note : if cluster=0 it's changed to read rootdir |
379 | ; Note : if cluster=0 it's changed to read rootdir |
380 | ; save 2 previous directory sectors in longname_sec |
380 | ; save 2 previous directory sectors in longname_sec |
381 | ;----------------------------------------------------------- |
381 | ;----------------------------------------------------------- |
382 | push ecx edx esi edi ebx ; ebx = [esp+0] |
382 | push ecx edx esi edi ebx ; ebx = [esp+0] |
383 | mov [longname_sec1],0 |
383 | mov [longname_sec1],0 |
384 | mov [longname_sec2],0 |
384 | mov [longname_sec2],0 |
385 | 385 | ||
386 | adr_new_cluster: |
386 | adr_new_cluster: |
387 | mov [cluster_tmp],eax |
387 | mov [cluster_tmp],eax |
388 | mov [fat16_root],0 |
388 | mov [fat16_root],0 |
389 | cmp eax,[LAST_CLUSTER] |
389 | cmp eax,[LAST_CLUSTER] |
390 | ja adr_not_found ; too big cluster number, something is wrong |
390 | ja adr_not_found ; too big cluster number, something is wrong |
391 | cmp eax,2 |
391 | cmp eax,2 |
392 | jnb adr_data_cluster |
392 | jnb adr_data_cluster |
393 | 393 | ||
394 | mov eax,[ROOT_CLUSTER] ; if cluster < 2 then read rootdir |
394 | mov eax,[ROOT_CLUSTER] ; if cluster < 2 then read rootdir |
395 | cmp [fs_type],16 |
395 | cmp [fs_type],16 |
396 | jne adr_data_cluster |
396 | jne adr_data_cluster |
397 | mov eax,[ROOT_START] |
397 | mov eax,[ROOT_START] |
398 | mov edx,[ROOT_SECTORS] |
398 | mov edx,[ROOT_SECTORS] |
399 | mov [fat16_root],1 ; flag for fat16 rootdir |
399 | mov [fat16_root],1 ; flag for fat16 rootdir |
400 | jmp adr_new_sector |
400 | jmp adr_new_sector |
401 | 401 | ||
402 | adr_data_cluster: |
402 | adr_data_cluster: |
403 | sub eax,2 |
403 | sub eax,2 |
404 | mov edx,[SECTORS_PER_CLUSTER] |
404 | mov edx,[SECTORS_PER_CLUSTER] |
405 | imul eax,edx |
405 | imul eax,edx |
406 | add eax,[DATA_START] |
406 | add eax,[DATA_START] |
407 | 407 | ||
408 | adr_new_sector: |
408 | adr_new_sector: |
409 | mov ebx,buffer |
409 | mov ebx,buffer |
410 | call hd_read |
410 | call hd_read |
411 | cmp [hd_error],0 |
411 | cmp [hd_error],0 |
412 | jne adr_not_found |
412 | jne adr_not_found |
413 | 413 | ||
414 | mov ecx,512/32 ; count of dir entrys per sector = 16 |
414 | mov ecx,512/32 ; count of dir entrys per sector = 16 |
415 | 415 | ||
416 | adr_analyze: |
416 | adr_analyze: |
417 | mov edi,[ebx+11] ; file attribute |
417 | mov edi,[ebx+11] ; file attribute |
418 | and edi,0xf |
418 | and edi,0xf |
419 | cmp edi,0xf |
419 | cmp edi,0xf |
420 | je adr_long_filename |
420 | je adr_long_filename |
421 | test edi,0x8 ; skip over volume label |
421 | test edi,0x8 ; skip over volume label |
422 | jne adr_long_filename ; Note: label can be same name as file/dir |
422 | jne adr_long_filename ; Note: label can be same name as file/dir |
423 | 423 | ||
424 | mov esi,[esp+0] ; filename need to be uppercase |
424 | mov esi,[esp+0] ; filename need to be uppercase |
425 | mov edi,ebx |
425 | mov edi,ebx |
426 | push ecx |
426 | push ecx |
427 | mov ecx,11 |
427 | mov ecx,11 |
428 | cld |
428 | cld |
429 | rep cmpsb ; compare 8+3 filename |
429 | rep cmpsb ; compare 8+3 filename |
430 | pop ecx |
430 | pop ecx |
431 | je adr_found |
431 | je adr_found |
432 | 432 | ||
433 | adr_long_filename: |
433 | adr_long_filename: |
434 | add ebx,32 ; position of next dir entry |
434 | add ebx,32 ; position of next dir entry |
435 | dec ecx |
435 | dec ecx |
436 | jnz adr_analyze |
436 | jnz adr_analyze |
437 | 437 | ||
438 | mov ecx,[longname_sec1] ; save 2 previous directory sectors |
438 | mov ecx,[longname_sec1] ; save 2 previous directory sectors |
439 | mov [longname_sec1],eax ; for delete long filename |
439 | mov [longname_sec1],eax ; for delete long filename |
440 | mov [longname_sec2],ecx |
440 | mov [longname_sec2],ecx |
441 | inc eax ; next sector |
441 | inc eax ; next sector |
442 | dec edx |
442 | dec edx |
443 | jne adr_new_sector |
443 | jne adr_new_sector |
444 | cmp [fat16_root],1 ; end of fat16 rootdir |
444 | cmp [fat16_root],1 ; end of fat16 rootdir |
445 | je adr_not_found |
445 | je adr_not_found |
446 | 446 | ||
447 | adr_next_cluster: |
447 | adr_next_cluster: |
448 | mov eax,[cluster_tmp] |
448 | mov eax,[cluster_tmp] |
449 | call get_FAT ; get next cluster |
449 | call get_FAT ; get next cluster |
450 | cmp [hd_error],0 |
450 | cmp [hd_error],0 |
451 | jne adr_not_found |
451 | jne adr_not_found |
452 | 452 | ||
453 | cmp eax,2 ; incorrect fat chain? |
453 | cmp eax,2 ; incorrect fat chain? |
454 | jb adr_not_found ; yes |
454 | jb adr_not_found ; yes |
455 | cmp eax,[fatRESERVED] ; is it end of directory? |
455 | cmp eax,[fatRESERVED] ; is it end of directory? |
456 | jb adr_new_cluster ; no. analyse it |
456 | jb adr_new_cluster ; no. analyse it |
457 | 457 | ||
458 | adr_not_found: |
458 | adr_not_found: |
459 | pop edi edi esi edx ecx ; first edi will remove ebx |
459 | pop edi edi esi edx ecx ; first edi will remove ebx |
460 | stc ; file not found |
460 | stc ; file not found |
461 | ret |
461 | ret |
462 | 462 | ||
463 | adr_found: |
463 | adr_found: |
464 | pop edi edi esi edx ecx ; first edi will remove ebx |
464 | pop edi edi esi edx ecx ; first edi will remove ebx |
465 | clc ; file found |
465 | clc ; file found |
466 | ret |
466 | ret |
467 | 467 | ||
468 | 468 | ||
469 | analyze_directory_to_write: |
469 | analyze_directory_to_write: |
470 | ;----------------------------------------------------------- |
470 | ;----------------------------------------------------------- |
471 | ; input : EAX = first cluster of the directory |
471 | ; input : EAX = first cluster of the directory |
472 | ; output : IF CARRY=0 EAX = sector where the empty pos is found |
472 | ; output : IF CARRY=0 EAX = sector where the empty pos is found |
473 | ; EBX = pointer in buffer |
473 | ; EBX = pointer in buffer |
474 | ; [buffer .. buffer+511] |
474 | ; [buffer .. buffer+511] |
475 | ; ECX,EDX,ESI,EDI not changed |
475 | ; ECX,EDX,ESI,EDI not changed |
476 | ; IF CARRY=1 disk full or fat corrupted |
476 | ; IF CARRY=1 disk full or fat corrupted |
477 | ; Note : if cluster=0 it's changed to read rootdir |
477 | ; Note : if cluster=0 it's changed to read rootdir |
478 | ;----------------------------------------------------------- |
478 | ;----------------------------------------------------------- |
479 | push ecx edx edi |
479 | push ecx edx edi |
480 | 480 | ||
481 | adw_new_cluster: |
481 | adw_new_cluster: |
482 | mov [cluster_tmp],eax |
482 | mov [cluster_tmp],eax |
483 | mov [fat16_root],0 |
483 | mov [fat16_root],0 |
484 | cmp eax,[LAST_CLUSTER] |
484 | cmp eax,[LAST_CLUSTER] |
485 | ja adw_not_found ; too big cluster number, something is wrong |
485 | ja adw_not_found ; too big cluster number, something is wrong |
486 | cmp eax,2 |
486 | cmp eax,2 |
487 | jnb adw_data_cluster |
487 | jnb adw_data_cluster |
488 | 488 | ||
489 | mov eax,[ROOT_CLUSTER] ; if cluster < 2 then read rootdir |
489 | mov eax,[ROOT_CLUSTER] ; if cluster < 2 then read rootdir |
490 | cmp [fs_type],16 |
490 | cmp [fs_type],16 |
491 | jne adw_data_cluster |
491 | jne adw_data_cluster |
492 | mov eax,[ROOT_START] |
492 | mov eax,[ROOT_START] |
493 | mov edx,[ROOT_SECTORS] |
493 | mov edx,[ROOT_SECTORS] |
494 | mov [fat16_root],1 ; flag for fat16 rootdir |
494 | mov [fat16_root],1 ; flag for fat16 rootdir |
495 | jmp adw_new_sector |
495 | jmp adw_new_sector |
496 | 496 | ||
497 | adw_data_cluster: |
497 | adw_data_cluster: |
498 | sub eax,2 |
498 | sub eax,2 |
499 | mov edx,[SECTORS_PER_CLUSTER] |
499 | mov edx,[SECTORS_PER_CLUSTER] |
500 | imul eax,edx |
500 | imul eax,edx |
501 | add eax,[DATA_START] |
501 | add eax,[DATA_START] |
502 | 502 | ||
503 | adw_new_sector: |
503 | adw_new_sector: |
504 | mov ebx,buffer |
504 | mov ebx,buffer |
505 | call hd_read |
505 | call hd_read |
506 | cmp [hd_error],0 |
506 | cmp [hd_error],0 |
507 | jne adw_not_found |
507 | jne adw_not_found |
508 | 508 | ||
509 | mov ecx,512/32 ; count of dir entrys per sector = 16 |
509 | mov ecx,512/32 ; count of dir entrys per sector = 16 |
510 | 510 | ||
511 | adw_analyze: |
511 | adw_analyze: |
512 | cmp byte [ebx],0x00 ; is free entry? |
512 | cmp byte [ebx],0x00 ; is free entry? |
513 | je adw_found ; yes |
513 | je adw_found ; yes |
514 | cmp byte [ebx],0xe5 ; is deleted entry? |
514 | cmp byte [ebx],0xe5 ; is deleted entry? |
515 | je adw_found ; yes |
515 | je adw_found ; yes |
516 | add ebx,32 ; position of next dir entry |
516 | add ebx,32 ; position of next dir entry |
517 | dec ecx |
517 | dec ecx |
518 | jnz adw_analyze |
518 | jnz adw_analyze |
519 | 519 | ||
520 | inc eax ; next sector |
520 | inc eax ; next sector |
521 | dec edx |
521 | dec edx |
522 | jne adw_new_sector |
522 | jne adw_new_sector |
523 | cmp [fat16_root],1 ; end of fat16 rootdir |
523 | cmp [fat16_root],1 ; end of fat16 rootdir |
524 | je adw_not_found |
524 | je adw_not_found |
525 | 525 | ||
526 | mov eax,[cluster_tmp] |
526 | mov eax,[cluster_tmp] |
527 | call get_FAT ; get next cluster |
527 | call get_FAT ; get next cluster |
528 | cmp [hd_error],0 |
528 | cmp [hd_error],0 |
529 | jne adw_not_found |
529 | jne adw_not_found |
530 | 530 | ||
531 | cmp eax,2 ; incorrect fat chain? |
531 | cmp eax,2 ; incorrect fat chain? |
532 | jb adw_not_found ; yes |
532 | jb adw_not_found ; yes |
533 | cmp eax,[fatRESERVED] ; is it end of directory? |
533 | cmp eax,[fatRESERVED] ; is it end of directory? |
534 | jb adw_new_cluster ; no. analyse it |
534 | jb adw_new_cluster ; no. analyse it |
535 | 535 | ||
536 | mov eax,2 ; this block of code add a new cluster |
536 | mov eax,2 ; this block of code add a new cluster |
537 | call get_free_FAT ; for the directory because the directory |
537 | call get_free_FAT ; for the directory because the directory |
538 | jc adw_not_found ; is full |
538 | jc adw_not_found ; is full |
539 | 539 | ||
540 | mov edx,[fatEND] ; new end for directory |
540 | mov edx,[fatEND] ; new end for directory |
541 | call set_FAT |
541 | call set_FAT |
542 | cmp [hd_error],0 |
542 | cmp [hd_error],0 |
543 | jne adw_not_found |
543 | jne adw_not_found |
544 | 544 | ||
545 | push eax ; save new cluster |
545 | push eax ; save new cluster |
546 | mov edx,eax |
546 | mov edx,eax |
547 | mov eax,[cluster_tmp] ; change last cluster to point new cluster |
547 | mov eax,[cluster_tmp] ; change last cluster to point new cluster |
548 | call set_FAT |
548 | call set_FAT |
549 | cmp [hd_error],0 |
549 | cmp [hd_error],0 |
550 | jne adw_not_found_1 |
550 | jne adw_not_found_1 |
551 | 551 | ||
552 | mov ecx,-1 ; remove 1 cluster from free disk space |
552 | mov ecx,-1 ; remove 1 cluster from free disk space |
553 | call add_disk_free_space |
553 | call add_disk_free_space |
554 | cmp [hd_error],0 |
554 | cmp [hd_error],0 |
555 | jne adw_not_found_1 |
555 | jne adw_not_found_1 |
556 | 556 | ||
557 | mov ecx,512/4 |
557 | mov ecx,512/4 |
558 | xor eax,eax |
558 | xor eax,eax |
559 | mov edi,buffer |
559 | mov edi,buffer |
560 | cld |
560 | cld |
561 | rep stosd ; clear new directory cluster |
561 | rep stosd ; clear new directory cluster |
562 | pop eax |
562 | pop eax |
563 | 563 | ||
564 | sub eax,2 |
564 | sub eax,2 |
565 | mov ecx,[SECTORS_PER_CLUSTER] |
565 | mov ecx,[SECTORS_PER_CLUSTER] |
566 | imul eax,ecx |
566 | imul eax,ecx |
567 | add eax,[DATA_START] |
567 | add eax,[DATA_START] |
568 | mov ebx,buffer |
568 | mov ebx,buffer |
569 | push eax ; save sector number |
569 | push eax ; save sector number |
570 | 570 | ||
571 | adw_set_empty_directory: |
571 | adw_set_empty_directory: |
572 | call hd_write |
572 | call hd_write |
573 | cmp [hd_error],0 |
573 | cmp [hd_error],0 |
574 | jne adw_not_found_1 |
574 | jne adw_not_found_1 |
575 | 575 | ||
576 | inc eax ; next sector |
576 | inc eax ; next sector |
577 | dec ecx |
577 | dec ecx |
578 | jnz adw_set_empty_directory |
578 | jnz adw_set_empty_directory |
579 | 579 | ||
580 | pop eax |
580 | pop eax |
581 | 581 | ||
582 | adw_found: |
582 | adw_found: |
583 | pop edi edx ecx |
583 | pop edi edx ecx |
584 | clc ; free space found |
584 | clc ; free space found |
585 | ret |
585 | ret |
586 | adw_not_found_1: |
586 | adw_not_found_1: |
587 | add esp,4 |
587 | add esp,4 |
588 | adw_not_found: |
588 | adw_not_found: |
589 | pop edi edx ecx |
589 | pop edi edx ecx |
590 | stc ; free space not found |
590 | stc ; free space not found |
591 | ret |
591 | ret |
592 | 592 | ||
593 | 593 | ||
594 | get_data_cluster: |
594 | get_data_cluster: |
595 | ;----------------------------------------------------------- |
595 | ;----------------------------------------------------------- |
596 | ; input : EAX = cluster |
596 | ; input : EAX = cluster |
597 | ; EBX = pointer to buffer |
597 | ; EBX = pointer to buffer |
598 | ; EDX = # blocks to read in buffer |
598 | ; EDX = # blocks to read in buffer |
599 | ; ESI = # blocks to skip over |
599 | ; ESI = # blocks to skip over |
600 | ; output : if CARRY=0 ok EBX/EDX/ESI updated |
600 | ; output : if CARRY=0 ok EBX/EDX/ESI updated |
601 | ; if CARRY=1 cluster out of range |
601 | ; if CARRY=1 cluster out of range |
602 | ; Note : if cluster=0 it's changed to read rootdir |
602 | ; Note : if cluster=0 it's changed to read rootdir |
603 | ;----------------------------------------------------------- |
603 | ;----------------------------------------------------------- |
604 | push eax ecx |
604 | push eax ecx |
605 | 605 | ||
606 | mov [fat16_root],0 |
606 | mov [fat16_root],0 |
607 | cmp eax,[LAST_CLUSTER] |
607 | cmp eax,[LAST_CLUSTER] |
608 | ja gdc_error ; too big cluster number, something is wrong |
608 | ja gdc_error ; too big cluster number, something is wrong |
609 | cmp eax,2 |
609 | cmp eax,2 |
610 | jnb gdc_cluster |
610 | jnb gdc_cluster |
611 | 611 | ||
612 | mov eax,[ROOT_CLUSTER] ; if cluster < 2 then read rootdir |
612 | mov eax,[ROOT_CLUSTER] ; if cluster < 2 then read rootdir |
613 | cmp [fs_type],16 |
613 | cmp [fs_type],16 |
614 | jne gdc_cluster |
614 | jne gdc_cluster |
615 | mov eax,[ROOT_START] |
615 | mov eax,[ROOT_START] |
616 | mov ecx,[ROOT_SECTORS] ; Note: not cluster size |
616 | mov ecx,[ROOT_SECTORS] ; Note: not cluster size |
617 | mov [fat16_root],1 ; flag for fat16 rootdir |
617 | mov [fat16_root],1 ; flag for fat16 rootdir |
618 | jmp gdc_read |
618 | jmp gdc_read |
619 | 619 | ||
620 | gdc_cluster: |
620 | gdc_cluster: |
621 | sub eax,2 |
621 | sub eax,2 |
622 | mov ecx,[SECTORS_PER_CLUSTER] |
622 | mov ecx,[SECTORS_PER_CLUSTER] |
623 | imul eax,ecx |
623 | imul eax,ecx |
624 | add eax,[DATA_START] |
624 | add eax,[DATA_START] |
625 | 625 | ||
626 | gdc_read: |
626 | gdc_read: |
627 | test esi,esi ; first wanted block |
627 | test esi,esi ; first wanted block |
628 | je gdcl1 ; yes, skip count is 0 |
628 | je gdcl1 ; yes, skip count is 0 |
629 | dec esi |
629 | dec esi |
630 | jmp gdcl2 |
630 | jmp gdcl2 |
631 | 631 | ||
632 | gdcl1: |
632 | gdcl1: |
633 | call hd_read |
633 | call hd_read |
634 | cmp [hd_error],0 |
634 | cmp [hd_error],0 |
635 | jne gdc_error |
635 | jne gdc_error |
636 | 636 | ||
637 | add ebx,512 ; update pointer |
637 | add ebx,512 ; update pointer |
638 | dec edx |
638 | dec edx |
639 | 639 | ||
640 | gdcl2: |
640 | gdcl2: |
641 | test edx,edx ; is all read? |
641 | test edx,edx ; is all read? |
642 | je out_of_read |
642 | je out_of_read |
643 | 643 | ||
644 | inc eax ; next sector |
644 | inc eax ; next sector |
645 | dec ecx |
645 | dec ecx |
646 | jnz gdc_read |
646 | jnz gdc_read |
647 | 647 | ||
648 | out_of_read: |
648 | out_of_read: |
649 | pop ecx eax |
649 | pop ecx eax |
650 | clc |
650 | clc |
651 | ret |
651 | ret |
652 | 652 | ||
653 | gdc_error: |
653 | gdc_error: |
654 | pop ecx eax |
654 | pop ecx eax |
655 | stc |
655 | stc |
656 | ret |
656 | ret |
657 | 657 | ||
658 | 658 | ||
659 | set_data_cluster: |
659 | set_data_cluster: |
660 | ;----------------------------------------------------------- |
660 | ;----------------------------------------------------------- |
661 | ; input : EAX = cluster |
661 | ; input : EAX = cluster |
662 | ; EBX = pointer to buffer |
662 | ; EBX = pointer to buffer |
663 | ; output : if CARRY=0 ok |
663 | ; output : if CARRY=0 ok |
664 | ; if CARRY=1 cluster out of range |
664 | ; if CARRY=1 cluster out of range |
665 | ;----------------------------------------------------------- |
665 | ;----------------------------------------------------------- |
666 | push eax ebx edx |
666 | push eax ebx edx |
667 | 667 | ||
668 | cmp eax,[LAST_CLUSTER] |
668 | cmp eax,[LAST_CLUSTER] |
669 | ja sdc_error ; too big cluster number, something is wrong |
669 | ja sdc_error ; too big cluster number, something is wrong |
670 | sub eax,2 |
670 | sub eax,2 |
671 | jb sdc_error ; don't allow rootdir write |
671 | jb sdc_error ; don't allow rootdir write |
672 | 672 | ||
673 | mov edx,[SECTORS_PER_CLUSTER] |
673 | mov edx,[SECTORS_PER_CLUSTER] |
674 | imul eax,edx |
674 | imul eax,edx |
675 | add eax,[DATA_START] |
675 | add eax,[DATA_START] |
676 | 676 | ||
677 | sdc_write: |
677 | sdc_write: |
678 | call hd_write |
678 | call hd_write |
679 | cmp [hd_error],0 |
679 | cmp [hd_error],0 |
680 | jne sdc_error |
680 | jne sdc_error |
681 | 681 | ||
682 | add ebx,512 ; update pointer |
682 | add ebx,512 ; update pointer |
683 | inc eax |
683 | inc eax |
684 | dec edx |
684 | dec edx |
685 | jnz sdc_write |
685 | jnz sdc_write |
686 | pop edx ebx eax |
686 | pop edx ebx eax |
687 | clc |
687 | clc |
688 | ret |
688 | ret |
689 | 689 | ||
690 | sdc_error: |
690 | sdc_error: |
691 | pop edx ebx eax |
691 | pop edx ebx eax |
692 | stc |
692 | stc |
693 | ret |
693 | ret |
694 | 694 | ||
695 | 695 | ||
696 | get_cluster_of_a_path: |
696 | get_cluster_of_a_path: |
697 | ;--------------------------------------------------------- |
697 | ;--------------------------------------------------------- |
698 | ; input : EBX = pointer to a path string |
698 | ; input : EBX = pointer to a path string |
699 | ; (example: the path "/files/data/document" become |
699 | ; (example: the path "/files/data/document" become |
700 | ; "files......data.......document...0" |
700 | ; "files......data.......document...0" |
701 | ; '.' = space char |
701 | ; '.' = space char |
702 | ; '0' = char(0) (ASCII=0) !!! ) |
702 | ; '0' = char(0) (ASCII=0) !!! ) |
703 | ; output : if (CARRY=1) -> ERROR in the PATH |
703 | ; output : if (CARRY=1) -> ERROR in the PATH |
704 | ; if (CARRY=0) -> EAX=cluster |
704 | ; if (CARRY=0) -> EAX=cluster |
705 | ;--------------------------------------------------------- |
705 | ;--------------------------------------------------------- |
706 | push ebx edx |
706 | push ebx edx |
707 | 707 | ||
708 | mov eax,[ROOT_CLUSTER] |
708 | mov eax,[ROOT_CLUSTER] |
709 | mov edx,ebx |
709 | mov edx,ebx |
710 | 710 | ||
711 | search_end_of_path: |
711 | search_end_of_path: |
712 | cmp byte [edx],0 |
712 | cmp byte [edx],0 |
713 | je found_end_of_path |
713 | je found_end_of_path |
714 | 714 | ||
715 | inc edx ; '/' |
715 | inc edx ; '/' |
716 | mov ebx,edx |
716 | mov ebx,edx |
717 | call analyze_directory |
717 | call analyze_directory |
718 | jc directory_not_found |
718 | jc directory_not_found |
719 | 719 | ||
720 | mov eax,[ebx+20-2] ; read the HIGH 16bit cluster field |
720 | mov eax,[ebx+20-2] ; read the HIGH 16bit cluster field |
721 | mov ax,[ebx+26] ; read the LOW 16bit cluster field |
721 | mov ax,[ebx+26] ; read the LOW 16bit cluster field |
722 | and eax,[fatMASK] |
722 | and eax,[fatMASK] |
723 | add edx,11 ; 8+3 (name+extension) |
723 | add edx,11 ; 8+3 (name+extension) |
724 | jmp search_end_of_path |
724 | jmp search_end_of_path |
725 | 725 | ||
726 | found_end_of_path: |
726 | found_end_of_path: |
727 | pop edx ebx |
727 | pop edx ebx |
728 | clc ; no errors |
728 | clc ; no errors |
729 | ret |
729 | ret |
730 | 730 | ||
731 | directory_not_found: |
731 | directory_not_found: |
732 | pop edx ebx |
732 | pop edx ebx |
733 | stc ; errors occour |
733 | stc ; errors occour |
734 | ret |
734 | ret |
735 | 735 | ||
736 | 736 | ||
737 | bcd2bin: |
737 | bcd2bin: |
738 | ;---------------------------------- |
738 | ;---------------------------------- |
739 | ; input : AL=BCD number (eg. 0x11) |
739 | ; input : AL=BCD number (eg. 0x11) |
740 | ; output : AH=0 |
740 | ; output : AH=0 |
741 | ; AL=decimal number (eg. 11) |
741 | ; AL=decimal number (eg. 11) |
742 | ;---------------------------------- |
742 | ;---------------------------------- |
743 | xor ah,ah |
743 | xor ah,ah |
744 | shl ax,4 |
744 | shl ax,4 |
745 | shr al,4 |
745 | shr al,4 |
746 | aad |
746 | aad |
747 | ret |
747 | ret |
748 | 748 | ||
749 | 749 | ||
750 | get_date_for_file: |
750 | get_date_for_file: |
751 | ;----------------------------------------------------- |
751 | ;----------------------------------------------------- |
752 | ; Get date from CMOS and pack day,month,year in AX |
752 | ; Get date from CMOS and pack day,month,year in AX |
753 | ; DATE bits 0..4 : day of month 0..31 |
753 | ; DATE bits 0..4 : day of month 0..31 |
754 | ; 5..8 : month of year 1..12 |
754 | ; 5..8 : month of year 1..12 |
755 | ; 9..15 : count of years from 1980 |
755 | ; 9..15 : count of years from 1980 |
756 | ;----------------------------------------------------- |
756 | ;----------------------------------------------------- |
757 | mov al,0x7 ;day |
757 | mov al,0x7 ;day |
758 | out 0x70,al |
758 | out 0x70,al |
759 | in al,0x71 |
759 | in al,0x71 |
760 | call bcd2bin |
760 | call bcd2bin |
761 | ror eax,5 |
761 | ror eax,5 |
762 | 762 | ||
763 | mov al,0x8 ;month |
763 | mov al,0x8 ;month |
764 | out 0x70,al |
764 | out 0x70,al |
765 | in al,0x71 |
765 | in al,0x71 |
766 | call bcd2bin |
766 | call bcd2bin |
767 | ror eax,4 |
767 | ror eax,4 |
768 | 768 | ||
769 | mov al,0x9 ;year |
769 | mov al,0x9 ;year |
770 | out 0x70,al |
770 | out 0x70,al |
771 | in al,0x71 |
771 | in al,0x71 |
772 | call bcd2bin |
772 | call bcd2bin |
773 | add ax,20 ;because CMOS return only the two last |
773 | add ax,20 ;because CMOS return only the two last |
774 | ;digit (eg. 2000 -> 00 , 2001 -> 01) and we |
774 | ;digit (eg. 2000 -> 00 , 2001 -> 01) and we |
775 | rol eax,9 ;need the difference with 1980 (eg. 2001-1980) |
775 | rol eax,9 ;need the difference with 1980 (eg. 2001-1980) |
776 | ret |
776 | ret |
777 | 777 | ||
778 | 778 | ||
779 | get_time_for_file: |
779 | get_time_for_file: |
780 | ;----------------------------------------------------- |
780 | ;----------------------------------------------------- |
781 | ; Get time from CMOS and pack hour,minute,second in AX |
781 | ; Get time from CMOS and pack hour,minute,second in AX |
782 | ; TIME bits 0..4 : second (the low bit is lost) |
782 | ; TIME bits 0..4 : second (the low bit is lost) |
783 | ; 5..10 : minute 0..59 |
783 | ; 5..10 : minute 0..59 |
784 | ; 11..15 : hour 0..23 |
784 | ; 11..15 : hour 0..23 |
785 | ;----------------------------------------------------- |
785 | ;----------------------------------------------------- |
786 | mov al,0x0 ;second |
786 | mov al,0x0 ;second |
787 | out 0x70,al |
787 | out 0x70,al |
788 | in al,0x71 |
788 | in al,0x71 |
789 | call bcd2bin |
789 | call bcd2bin |
790 | ror eax,6 |
790 | ror eax,6 |
791 | 791 | ||
792 | mov al,0x2 ;minute |
792 | mov al,0x2 ;minute |
793 | out 0x70,al |
793 | out 0x70,al |
794 | in al,0x71 |
794 | in al,0x71 |
795 | call bcd2bin |
795 | call bcd2bin |
796 | ror eax,6 |
796 | ror eax,6 |
797 | 797 | ||
798 | mov al,0x4 ;hour |
798 | mov al,0x4 ;hour |
799 | out 0x70,al |
799 | out 0x70,al |
800 | in al,0x71 |
800 | in al,0x71 |
801 | call bcd2bin |
801 | call bcd2bin |
802 | rol eax,11 |
802 | rol eax,11 |
803 | ret |
803 | ret |
804 | 804 | ||
805 | 805 | ||
806 | set_current_time_for_entry: |
806 | set_current_time_for_entry: |
807 | ;----------------------------------------------------- |
807 | ;----------------------------------------------------- |
808 | ; Set current time/date for file entry |
808 | ; Set current time/date for file entry |
809 | ; input : ebx = file entry pointer |
809 | ; input : ebx = file entry pointer |
810 | ;----------------------------------------------------- |
810 | ;----------------------------------------------------- |
811 | push eax |
811 | push eax |
812 | call get_time_for_file ; update files date/time |
812 | call get_time_for_file ; update files date/time |
813 | mov [ebx+22],ax |
813 | mov [ebx+22],ax |
814 | call get_date_for_file |
814 | call get_date_for_file |
815 | mov [ebx+24],ax |
815 | mov [ebx+24],ax |
816 | pop eax |
816 | pop eax |
817 | ret |
817 | ret |
818 | 818 | ||
819 | 819 | ||
820 | 820 | ||
821 | add_disk_free_space: |
821 | add_disk_free_space: |
822 | ;----------------------------------------------------- |
822 | ;----------------------------------------------------- |
823 | ; input : ecx = cluster count |
823 | ; input : ecx = cluster count |
824 | ; Note : negative = remove clusters from free space |
824 | ; Note : negative = remove clusters from free space |
825 | ; positive = add clusters to free space |
825 | ; positive = add clusters to free space |
826 | ;----------------------------------------------------- |
826 | ;----------------------------------------------------- |
827 | test ecx,ecx ; no change |
827 | test ecx,ecx ; no change |
828 | je add_dfs_no |
828 | je add_dfs_no |
829 | cmp [fs_type],32 ; free disk space only used by fat32 |
829 | cmp [fs_type],32 ; free disk space only used by fat32 |
830 | jne add_dfs_no |
830 | jne add_dfs_no |
831 | 831 | ||
832 | push eax ebx |
832 | push eax ebx |
833 | mov eax,[ADR_FSINFO] |
833 | mov eax,[ADR_FSINFO] |
834 | mov ebx,fsinfo_buffer |
834 | mov ebx,fsinfo_buffer |
835 | call hd_read |
835 | call hd_read |
836 | cmp [hd_error],0 |
836 | cmp [hd_error],0 |
837 | jne add_not_fs |
837 | jne add_not_fs |
838 | 838 | ||
839 | cmp dword [ebx+0x1fc],0xaa550000 ; check sector id |
839 | cmp dword [ebx+0x1fc],0xaa550000 ; check sector id |
840 | jne add_not_fs |
840 | jne add_not_fs |
841 | 841 | ||
842 | add [ebx+0x1e8],ecx |
842 | add [ebx+0x1e8],ecx |
843 | call hd_write |
843 | call hd_write |
844 | ; cmp [hd_error],0 |
844 | ; cmp [hd_error],0 |
845 | ; jne add_not_fs |
845 | ; jne add_not_fs |
846 | 846 | ||
847 | add_not_fs: |
847 | add_not_fs: |
848 | pop ebx eax |
848 | pop ebx eax |
849 | 849 | ||
850 | add_dfs_no: |
850 | add_dfs_no: |
851 | ret |
851 | ret |
852 | 852 | ||
853 | 853 | ||
854 | file_write: |
854 | file_write: |
855 | ;-------------------------------------------------------------------------- |
855 | ;-------------------------------------------------------------------------- |
856 | ; INPUT : user-reg register-in-this meaning symbol-in-this-routine |
856 | ; INPUT : user-reg register-in-this meaning symbol-in-this-routine |
857 | ; |
857 | ; |
858 | ; EAX EDI system call to write / |
858 | ; EAX EDI system call to write / |
859 | ; EBX EAX (PAR0) pointer to file-name PAR0 |
859 | ; EBX EAX (PAR0) pointer to file-name PAR0 |
860 | ; EDX ECX (PAR1) pointer to buffer PAR1 |
860 | ; EDX ECX (PAR1) pointer to buffer PAR1 |
861 | ; ECX EBX (PAR2) file size PAR2 |
861 | ; ECX EBX (PAR2) file size PAR2 |
862 | ; ESI EDX (PAR3) pointer to path PAR3 |
862 | ; ESI EDX (PAR3) pointer to path PAR3 |
863 | ; |
863 | ; |
864 | ; output : eax = 0 - ok |
864 | ; output : eax = 0 - ok |
865 | ; 3 - unknown FS |
865 | ; 3 - unknown FS |
866 | ; 5 - file not found |
866 | ; 5 - file not found |
867 | ; 8 - disk full |
867 | ; 8 - disk full |
868 | ; 10 - access denied |
868 | ; 10 - access denied |
869 | ;-------------------------------------------------------------------------- |
869 | ;-------------------------------------------------------------------------- |
870 | cmp [fs_type], 16 |
870 | cmp [fs_type], 16 |
871 | jz fat_ok_for_writing |
871 | jz fat_ok_for_writing |
872 | cmp [fs_type], 32 |
872 | cmp [fs_type], 32 |
873 | jz fat_ok_for_writing |
873 | jz fat_ok_for_writing |
874 | push ERROR_UNKNOWN_FS |
874 | push ERROR_UNKNOWN_FS |
875 | pop eax |
875 | pop eax |
876 | ret |
876 | ret |
877 | 877 | ||
878 | fat_ok_for_writing: |
878 | fat_ok_for_writing: |
879 | ; call reserve_hd1 |
879 | ; call reserve_hd1 |
880 | 880 | ||
881 | pushad |
881 | pushad |
882 | 882 | ||
883 | xor edi,edi ; don't allow directory remove |
883 | xor edi,edi ; don't allow directory remove |
884 | call file_delete ; try to delete the file first |
884 | call file_delete ; try to delete the file first |
885 | cmp [hd_error],0 |
885 | cmp [hd_error],0 |
886 | jne exit_write_access_1 |
886 | jne exit_write_access_1 |
887 | 887 | ||
888 | test eax,eax |
888 | test eax,eax |
889 | jz old_deleted ; deleted ok |
889 | jz old_deleted ; deleted ok |
890 | cmp eax,ERROR_FILE_NOT_FOUND |
890 | cmp eax,ERROR_FILE_NOT_FOUND |
891 | jnz exit_write_access ; it exist but can't delete |
891 | jnz exit_write_access ; it exist but can't delete |
892 | 892 | ||
893 | old_deleted: |
893 | old_deleted: |
894 | mov ebx,PUSHAD_EDX |
894 | mov ebx,PUSHAD_EDX |
895 | call get_cluster_of_a_path |
895 | call get_cluster_of_a_path |
896 | jnc found_directory_for_writing |
896 | jnc found_directory_for_writing |
897 | cmp [hd_error],0 |
897 | cmp [hd_error],0 |
898 | jne exit_write_access |
898 | jne exit_write_access |
899 | 899 | ||
900 | exit_writing_with_error: |
900 | exit_writing_with_error: |
901 | popad |
901 | popad |
902 | call update_disk ; write all of cache and fat to hd |
902 | call update_disk ; write all of cache and fat to hd |
903 | cmp [hd_error],0 |
903 | cmp [hd_error],0 |
904 | jne exit_write_access_2 |
904 | jne exit_write_access_2 |
905 | 905 | ||
906 | mov [hd1_status],0 |
906 | mov [hd1_status],0 |
907 | mov eax,ERROR_FILE_NOT_FOUND |
907 | mov eax,ERROR_FILE_NOT_FOUND |
908 | ret |
908 | ret |
909 | 909 | ||
910 | exit_writing_disk_full_clear: |
910 | exit_writing_disk_full_clear: |
911 | cmp [hd_error],0 |
911 | cmp [hd_error],0 |
912 | jne exit_write_access_1 |
912 | jne exit_write_access_1 |
913 | mov eax,[sector_tmp] |
913 | mov eax,[sector_tmp] |
914 | mov ebx,buffer |
914 | mov ebx,buffer |
915 | call hd_read ; read directory sector |
915 | call hd_read ; read directory sector |
916 | cmp [hd_error],0 |
916 | cmp [hd_error],0 |
917 | jne exit_write_access_1 |
917 | jne exit_write_access_1 |
918 | 918 | ||
919 | mov edx,[entry_pos] |
919 | mov edx,[entry_pos] |
920 | mov byte [edx],0xe5 ; mark as deleted |
920 | mov byte [edx],0xe5 ; mark as deleted |
921 | call hd_write |
921 | call hd_write |
922 | cmp [hd_error],0 |
922 | cmp [hd_error],0 |
923 | jne exit_write_access_1 |
923 | jne exit_write_access_1 |
924 | 924 | ||
925 | mov eax,[edx+20-2] ; FAT entry |
925 | mov eax,[edx+20-2] ; FAT entry |
926 | mov ax,[edx+26] |
926 | mov ax,[edx+26] |
927 | and eax,[fatMASK] |
927 | and eax,[fatMASK] |
928 | call clear_cluster_chain |
928 | call clear_cluster_chain |
929 | 929 | ||
930 | exit_writing_disk_full: |
930 | exit_writing_disk_full: |
931 | cmp [hd_error],0 |
931 | cmp [hd_error],0 |
932 | jne exit_write_access_1 |
932 | jne exit_write_access_1 |
933 | popad |
933 | popad |
934 | call update_disk ; write all of cache and fat to hd |
934 | call update_disk ; write all of cache and fat to hd |
935 | cmp [hd_error],0 |
935 | cmp [hd_error],0 |
936 | jne exit_write_access_2 |
936 | jne exit_write_access_2 |
937 | mov [hd1_status],0 |
937 | mov [hd1_status],0 |
938 | mov eax,ERROR_DISK_FULL |
938 | mov eax,ERROR_DISK_FULL |
939 | ret |
939 | ret |
940 | 940 | ||
941 | exit_write_access: |
941 | exit_write_access: |
942 | popad |
942 | popad |
943 | call update_disk ; write all of cache and fat to hd |
943 | call update_disk ; write all of cache and fat to hd |
944 | mov [hd1_status],0 |
944 | mov [hd1_status],0 |
945 | mov eax,ERROR_ACCESS_DENIED |
945 | mov eax,ERROR_ACCESS_DENIED |
946 | ret |
946 | ret |
947 | 947 | ||
948 | exit_write_access_1: |
948 | exit_write_access_1: |
949 | popad |
949 | popad |
950 | exit_write_access_2: |
950 | exit_write_access_2: |
951 | mov [hd1_status],0 |
951 | mov [hd1_status],0 |
952 | mov eax,ERROR_ACCESS_DENIED |
952 | mov eax,ERROR_ACCESS_DENIED |
953 | ret |
953 | ret |
954 | 954 | ||
955 | found_directory_for_writing: |
955 | found_directory_for_writing: |
956 | call analyze_directory_to_write |
956 | call analyze_directory_to_write |
957 | jc exit_writing_disk_full |
957 | jc exit_writing_disk_full |
958 | 958 | ||
959 | mov [sector_tmp],eax |
959 | mov [sector_tmp],eax |
960 | mov [entry_pos],ebx |
960 | mov [entry_pos],ebx |
961 | push eax ; save directory sector |
961 | push eax ; save directory sector |
962 | mov eax,2 |
962 | mov eax,2 |
963 | call get_free_FAT |
963 | call get_free_FAT |
964 | mov [cluster],eax ; first free cluster |
964 | mov [cluster],eax ; first free cluster |
965 | pop eax |
965 | pop eax |
966 | jc exit_writing_disk_full |
966 | jc exit_writing_disk_full |
967 | 967 | ||
968 | mov esi,PUSHAD_EAX ; file name |
968 | mov esi,PUSHAD_EAX ; file name |
969 | mov edi,ebx ; pointer in buffer |
969 | mov edi,ebx ; pointer in buffer |
970 | mov ecx,11 |
970 | mov ecx,11 |
971 | cld |
971 | cld |
972 | rep movsb |
972 | rep movsb |
973 | 973 | ||
974 | mov esi,PUSHAD_EBX ; file size (bytes left) |
974 | mov esi,PUSHAD_EBX ; file size (bytes left) |
975 | mov [ebx+28],esi ; file size |
975 | mov [ebx+28],esi ; file size |
976 | mov ecx,[cluster] |
976 | mov ecx,[cluster] |
977 | mov [ebx+26],cx ; 16 bits low of cluster |
977 | mov [ebx+26],cx ; 16 bits low of cluster |
978 | shr ecx,16 |
978 | shr ecx,16 |
979 | mov [ebx+20],cx ; 16 bits high of cluster (=0 fat16) |
979 | mov [ebx+20],cx ; 16 bits high of cluster (=0 fat16) |
980 | mov byte [ebx+11],0x20 ; attribute = archive |
980 | mov byte [ebx+11],0x20 ; attribute = archive |
981 | 981 | ||
982 | call set_current_time_for_entry |
982 | call set_current_time_for_entry |
983 | 983 | ||
984 | mov ebx,buffer ; save the directory name,length,cluster |
984 | mov ebx,buffer ; save the directory name,length,cluster |
985 | call hd_write |
985 | call hd_write |
986 | cmp [hd_error],0 |
986 | cmp [hd_error],0 |
987 | jne exit_write_access_1 |
987 | jne exit_write_access_1 |
988 | 988 | ||
989 | imul edi,[SECTORS_PER_CLUSTER],512 ; edi = cluster size in bytes |
989 | imul edi,[SECTORS_PER_CLUSTER],512 ; edi = cluster size in bytes |
990 | xor ecx,ecx ; cluster count |
990 | xor ecx,ecx ; cluster count |
991 | mov ebx,PUSHAD_ECX ; ebx = buffer |
991 | mov ebx,PUSHAD_ECX ; ebx = buffer |
992 | 992 | ||
993 | hd_new_block_write: |
993 | hd_new_block_write: |
994 | 994 | ||
995 | mov eax,[cluster] ; eax = block |
995 | mov eax,[cluster] ; eax = block |
996 | call set_data_cluster |
996 | call set_data_cluster |
997 | cmp [hd_error],0 |
997 | cmp [hd_error],0 |
998 | jne exit_write_access_1 |
998 | jne exit_write_access_1 |
999 | 999 | ||
1000 | sub esi,edi ; sub wrote bytes |
1000 | sub esi,edi ; sub wrote bytes |
1001 | jbe file_saved_OK ; end if all done |
1001 | jbe file_saved_OK ; end if all done |
1002 | add ebx,edi ; update buffer position |
1002 | add ebx,edi ; update buffer position |
1003 | 1003 | ||
1004 | inc eax |
1004 | inc eax |
1005 | call get_free_FAT ; next free in FAT |
1005 | call get_free_FAT ; next free in FAT |
1006 | jc exit_writing_disk_full_clear |
1006 | jc exit_writing_disk_full_clear |
1007 | 1007 | ||
1008 | mov edx,eax |
1008 | mov edx,eax |
1009 | xchg eax,[cluster] ; get old cluster and save new cluster |
1009 | xchg eax,[cluster] ; get old cluster and save new cluster |
1010 | call set_FAT ; add it in cluster chain |
1010 | call set_FAT ; add it in cluster chain |
1011 | cmp [hd_error],0 |
1011 | cmp [hd_error],0 |
1012 | jne exit_write_access_1 |
1012 | jne exit_write_access_1 |
1013 | 1013 | ||
1014 | dec ecx ; update cluster count |
1014 | dec ecx ; update cluster count |
1015 | jmp hd_new_block_write |
1015 | jmp hd_new_block_write |
1016 | 1016 | ||
1017 | file_saved_OK: |
1017 | file_saved_OK: |
1018 | 1018 | ||
1019 | mov edx,[fatEND] ; new end for cluster chain |
1019 | mov edx,[fatEND] ; new end for cluster chain |
1020 | call set_FAT |
1020 | call set_FAT |
1021 | cmp [hd_error],0 |
1021 | cmp [hd_error],0 |
1022 | jne exit_write_access_1 |
1022 | jne exit_write_access_1 |
1023 | 1023 | ||
1024 | dec ecx ; update cluster count |
1024 | dec ecx ; update cluster count |
1025 | 1025 | ||
1026 | call add_disk_free_space ; remove clusters from free disk space |
1026 | call add_disk_free_space ; remove clusters from free disk space |
1027 | cmp [hd_error],0 |
1027 | cmp [hd_error],0 |
1028 | jne exit_write_access_1 |
1028 | jne exit_write_access_1 |
1029 | 1029 | ||
1030 | popad |
1030 | popad |
1031 | call update_disk ; write all of cache and fat to hd |
1031 | call update_disk ; write all of cache and fat to hd |
1032 | cmp [hd_error],0 |
1032 | cmp [hd_error],0 |
1033 | jne exit_write_access_2 |
1033 | jne exit_write_access_2 |
1034 | mov [hd1_status],0 |
1034 | mov [hd1_status],0 |
1035 | xor eax,eax |
1035 | xor eax,eax |
1036 | ret |
1036 | ret |
1037 | 1037 | ||
1038 | 1038 | ||
1039 | file_read: |
1039 | file_read: |
1040 | ;-------------------------------------------------------------------------- |
1040 | ;-------------------------------------------------------------------------- |
1041 | ; INPUT : user-register register-in-this meaning symbol-in-this |
1041 | ; INPUT : user-register register-in-this meaning symbol-in-this |
1042 | ; |
1042 | ; |
1043 | ; EAX EDI system call to write / |
1043 | ; EAX EDI system call to write / |
1044 | ; EBX EAX (PAR0) pointer to file-name PAR0 |
1044 | ; EBX EAX (PAR0) pointer to file-name PAR0 |
1045 | ; EDX ECX (PAR1) pointer to buffer PAR1 |
1045 | ; EDX ECX (PAR1) pointer to buffer PAR1 |
1046 | ; ECX EBX (PAR2) vt file blocks to read PAR2 |
1046 | ; ECX EBX (PAR2) vt file blocks to read PAR2 |
1047 | ; ESI EDX (PAR3) pointer to path PAR3 |
1047 | ; ESI EDX (PAR3) pointer to path PAR3 |
1048 | ; EDI ESI vt first 512 block to read |
1048 | ; EDI ESI vt first 512 block to read |
1049 | ; EDI if 0 - read root |
1049 | ; EDI if 0 - read root |
1050 | ; |
1050 | ; |
1051 | ; output : eax = 0 - ok |
1051 | ; output : eax = 0 - ok |
1052 | ; 3 - unknown FS |
1052 | ; 3 - unknown FS |
1053 | ; 5 - file not found |
1053 | ; 5 - file not found |
1054 | ; 6 - end of file |
1054 | ; 6 - end of file |
1055 | ; 9 - fat table corrupted |
1055 | ; 9 - fat table corrupted |
1056 | ; 10 - access denied |
1056 | ; 10 - access denied |
1057 | ; ebx = size of file/directory |
1057 | ; ebx = size of file/directory |
1058 | ;-------------------------------------------------------------------------- |
1058 | ;-------------------------------------------------------------------------- |
1059 | cmp [fs_type], 16 |
1059 | cmp [fs_type], 16 |
1060 | jz fat_ok_for_reading |
1060 | jz fat_ok_for_reading |
1061 | cmp [fs_type], 32 |
1061 | cmp [fs_type], 32 |
1062 | jz fat_ok_for_reading |
1062 | jz fat_ok_for_reading |
1063 | xor ebx,ebx |
1063 | xor ebx,ebx |
1064 | mov eax,ERROR_UNKNOWN_FS |
1064 | mov eax,ERROR_UNKNOWN_FS |
1065 | mov [hd1_status], ebx |
1065 | mov [hd1_status], ebx |
1066 | ret |
1066 | ret |
1067 | 1067 | ||
1068 | fat_ok_for_reading: |
1068 | fat_ok_for_reading: |
1069 | ; call reserve_hd1 |
1069 | ; call reserve_hd1 |
1070 | 1070 | ||
1071 | pushad |
1071 | pushad |
1072 | 1072 | ||
1073 | mov ebx,edx |
1073 | mov ebx,edx |
1074 | call get_cluster_of_a_path |
1074 | call get_cluster_of_a_path |
1075 | jc file_to_read_not_found |
1075 | jc file_to_read_not_found |
1076 | 1076 | ||
1077 | test edi,edi ; read rootdir |
1077 | test edi,edi ; read rootdir |
1078 | jne no_read_root |
1078 | jne no_read_root |
1079 | 1079 | ||
1080 | xor eax,eax |
1080 | xor eax,eax |
1081 | call get_dir_size ; return rootdir size |
1081 | call get_dir_size ; return rootdir size |
1082 | cmp [hd_error],0 |
1082 | cmp [hd_error],0 |
1083 | jne file_access_denied |
1083 | jne file_access_denied |
1084 | 1084 | ||
1085 | mov [file_size],eax |
1085 | mov [file_size],eax |
1086 | mov eax,[ROOT_CLUSTER] |
1086 | mov eax,[ROOT_CLUSTER] |
1087 | jmp file_read_start |
1087 | jmp file_read_start |
1088 | 1088 | ||
1089 | no_read_root: |
1089 | no_read_root: |
1090 | mov ebx,PUSHAD_EAX ; file name |
1090 | mov ebx,PUSHAD_EAX ; file name |
1091 | call analyze_directory |
1091 | call analyze_directory |
1092 | jc file_to_read_not_found |
1092 | jc file_to_read_not_found |
1093 | 1093 | ||
1094 | mov eax,[ebx+28] ; file size |
1094 | mov eax,[ebx+28] ; file size |
1095 | test byte [ebx+11],0x10 ; is it directory? |
1095 | test byte [ebx+11],0x10 ; is it directory? |
1096 | jz read_set_size ; no |
1096 | jz read_set_size ; no |
1097 | 1097 | ||
1098 | mov eax,[ebx+20-2] ; FAT entry |
1098 | mov eax,[ebx+20-2] ; FAT entry |
1099 | mov ax,[ebx+26] |
1099 | mov ax,[ebx+26] |
1100 | and eax,[fatMASK] |
1100 | and eax,[fatMASK] |
1101 | call get_dir_size |
1101 | call get_dir_size |
1102 | cmp [hd_error],0 |
1102 | cmp [hd_error],0 |
1103 | jne file_access_denied |
1103 | jne file_access_denied |
1104 | 1104 | ||
1105 | read_set_size: |
1105 | read_set_size: |
1106 | mov [file_size],eax |
1106 | mov [file_size],eax |
1107 | 1107 | ||
1108 | mov eax,[ebx+20-2] ; FAT entry |
1108 | mov eax,[ebx+20-2] ; FAT entry |
1109 | mov ax,[ebx+26] |
1109 | mov ax,[ebx+26] |
1110 | and eax,[fatMASK] |
1110 | and eax,[fatMASK] |
1111 | 1111 | ||
1112 | file_read_start: |
1112 | file_read_start: |
1113 | mov ebx,PUSHAD_ECX ; pointer to buffer |
1113 | mov ebx,PUSHAD_ECX ; pointer to buffer |
1114 | mov edx,PUSHAD_EBX ; file blocks to read |
1114 | mov edx,PUSHAD_EBX ; file blocks to read |
1115 | mov esi,PUSHAD_ESI ; first 512 block to read |
1115 | mov esi,PUSHAD_ESI ; first 512 block to read |
1116 | 1116 | ||
1117 | file_read_new_cluster: |
1117 | file_read_new_cluster: |
1118 | call get_data_cluster |
1118 | call get_data_cluster |
1119 | jc file_read_eof ; end of file or cluster out of range |
1119 | jc file_read_eof ; end of file or cluster out of range |
1120 | 1120 | ||
1121 | test edx,edx ; is all read? |
1121 | test edx,edx ; is all read? |
1122 | je file_read_OK ; yes |
1122 | je file_read_OK ; yes |
1123 | 1123 | ||
1124 | call get_FAT ; get next cluster |
1124 | call get_FAT ; get next cluster |
1125 | cmp [hd_error],0 |
1125 | cmp [hd_error],0 |
1126 | jne file_access_denied |
1126 | jne file_access_denied |
1127 | 1127 | ||
1128 | cmp eax,[fatRESERVED] ; end of file |
1128 | cmp eax,[fatRESERVED] ; end of file |
1129 | jnb file_read_eof |
1129 | jnb file_read_eof |
1130 | cmp eax,2 ; incorrect fat chain |
1130 | cmp eax,2 ; incorrect fat chain |
1131 | jnb file_read_new_cluster |
1131 | jnb file_read_new_cluster |
1132 | 1132 | ||
1133 | popad |
1133 | popad |
1134 | mov [hd1_status],0 |
1134 | mov [hd1_status],0 |
1135 | mov ebx,[file_size] |
1135 | mov ebx,[file_size] |
1136 | mov eax,ERROR_FAT_TABLE |
1136 | mov eax,ERROR_FAT_TABLE |
1137 | ret |
1137 | ret |
1138 | 1138 | ||
1139 | file_read_eof: |
1139 | file_read_eof: |
1140 | cmp [hd_error],0 |
1140 | cmp [hd_error],0 |
1141 | jne file_access_denied |
1141 | jne file_access_denied |
1142 | popad |
1142 | popad |
1143 | mov [hd1_status],0 |
1143 | mov [hd1_status],0 |
1144 | mov ebx,[file_size] |
1144 | mov ebx,[file_size] |
1145 | mov eax,ERROR_END_OF_FILE |
1145 | mov eax,ERROR_END_OF_FILE |
1146 | ret |
1146 | ret |
1147 | 1147 | ||
1148 | file_read_OK: |
1148 | file_read_OK: |
1149 | popad |
1149 | popad |
1150 | mov [hd1_status],0 |
1150 | mov [hd1_status],0 |
1151 | mov ebx,[file_size] |
1151 | mov ebx,[file_size] |
1152 | xor eax,eax |
1152 | xor eax,eax |
1153 | ret |
1153 | ret |
1154 | 1154 | ||
1155 | file_to_read_not_found: |
1155 | file_to_read_not_found: |
1156 | cmp [hd_error],0 |
1156 | cmp [hd_error],0 |
1157 | jne file_access_denied |
1157 | jne file_access_denied |
1158 | popad |
1158 | popad |
1159 | mov [hd1_status],0 |
1159 | mov [hd1_status],0 |
1160 | xor ebx,ebx |
1160 | xor ebx,ebx |
1161 | mov eax,ERROR_FILE_NOT_FOUND |
1161 | mov eax,ERROR_FILE_NOT_FOUND |
1162 | ret |
1162 | ret |
1163 | 1163 | ||
1164 | file_access_denied: |
1164 | file_access_denied: |
1165 | popad |
1165 | popad |
1166 | mov [hd1_status],0 |
1166 | mov [hd1_status],0 |
1167 | xor ebx,ebx |
1167 | xor ebx,ebx |
1168 | mov eax,ERROR_ACCESS_DENIED |
1168 | mov eax,ERROR_ACCESS_DENIED |
1169 | ret |
1169 | ret |
1170 | 1170 | ||
1171 | get_dir_size: |
1171 | get_dir_size: |
1172 | ;----------------------------------------------------- |
1172 | ;----------------------------------------------------- |
1173 | ; input : eax = first cluster (0=rootdir) |
1173 | ; input : eax = first cluster (0=rootdir) |
1174 | ; output : eax = directory size in bytes |
1174 | ; output : eax = directory size in bytes |
1175 | ;----------------------------------------------------- |
1175 | ;----------------------------------------------------- |
1176 | push edx |
1176 | push edx |
1177 | xor edx,edx ; count of directory clusters |
1177 | xor edx,edx ; count of directory clusters |
1178 | test eax,eax |
1178 | test eax,eax |
1179 | jnz dir_size_next |
1179 | jnz dir_size_next |
1180 | 1180 | ||
1181 | mov eax,[ROOT_SECTORS] |
1181 | mov eax,[ROOT_SECTORS] |
1182 | shl eax,9 ; fat16 rootdir size in bytes |
1182 | shl eax,9 ; fat16 rootdir size in bytes |
1183 | cmp [fs_type],16 |
1183 | cmp [fs_type],16 |
1184 | je dir_size_ret |
1184 | je dir_size_ret |
1185 | mov eax,[ROOT_CLUSTER] |
1185 | mov eax,[ROOT_CLUSTER] |
1186 | 1186 | ||
1187 | dir_size_next: |
1187 | dir_size_next: |
1188 | cmp eax,2 ; incorrect fat chain |
1188 | cmp eax,2 ; incorrect fat chain |
1189 | jb dir_size_end |
1189 | jb dir_size_end |
1190 | cmp eax,[fatRESERVED] ; end of directory |
1190 | cmp eax,[fatRESERVED] ; end of directory |
1191 | ja dir_size_end |
1191 | ja dir_size_end |
1192 | call get_FAT ; get next cluster |
1192 | call get_FAT ; get next cluster |
1193 | cmp [hd_error],0 |
1193 | cmp [hd_error],0 |
1194 | jne dir_size_ret |
1194 | jne dir_size_ret |
1195 | 1195 | ||
1196 | inc edx |
1196 | inc edx |
1197 | jmp dir_size_next |
1197 | jmp dir_size_next |
1198 | 1198 | ||
1199 | dir_size_end: |
1199 | dir_size_end: |
1200 | imul eax,[SECTORS_PER_CLUSTER],512 ; cluster size in bytes |
1200 | imul eax,[SECTORS_PER_CLUSTER],512 ; cluster size in bytes |
1201 | imul eax,edx |
1201 | imul eax,edx |
1202 | 1202 | ||
1203 | dir_size_ret: |
1203 | dir_size_ret: |
1204 | pop edx |
1204 | pop edx |
1205 | ret |
1205 | ret |
1206 | 1206 | ||
1207 | 1207 | ||
1208 | file_delete: |
1208 | file_delete: |
1209 | ;----------------------------------------------------- |
1209 | ;----------------------------------------------------- |
1210 | ; input : eax = file/directory name |
1210 | ; input : eax = file/directory name |
1211 | ; edx = path |
1211 | ; edx = path |
1212 | ; edi = 1 - allow directory remove else don't remove directory |
1212 | ; edi = 1 - allow directory remove else don't remove directory |
1213 | ; output : eax = 0 - ok |
1213 | ; output : eax = 0 - ok |
1214 | ; 3 - unknown FS |
1214 | ; 3 - unknown FS |
1215 | ; 5 - file not found |
1215 | ; 5 - file not found |
1216 | ; 10 - access denied |
1216 | ; 10 - access denied |
1217 | ;----------------------------------------------------- |
1217 | ;----------------------------------------------------- |
1218 | cmp [fs_type], 16 |
1218 | cmp [fs_type], 16 |
1219 | jz file_del_fat_ok |
1219 | jz file_del_fat_ok |
1220 | cmp [fs_type], 32 |
1220 | cmp [fs_type], 32 |
1221 | jz file_del_fat_ok |
1221 | jz file_del_fat_ok |
1222 | push ERROR_UNKNOWN_FS |
1222 | push ERROR_UNKNOWN_FS |
1223 | pop eax |
1223 | pop eax |
1224 | ret |
1224 | ret |
1225 | 1225 | ||
1226 | file_del_fat_ok: |
1226 | file_del_fat_ok: |
1227 | pushad |
1227 | pushad |
1228 | 1228 | ||
1229 | mov ebx,edx |
1229 | mov ebx,edx |
1230 | call get_cluster_of_a_path |
1230 | call get_cluster_of_a_path |
1231 | jc file_to_delete_not_found |
1231 | jc file_to_delete_not_found |
1232 | 1232 | ||
1233 | mov ebx,PUSHAD_EAX ; file/directory name |
1233 | mov ebx,PUSHAD_EAX ; file/directory name |
1234 | call analyze_directory |
1234 | call analyze_directory |
1235 | jc file_to_delete_not_found |
1235 | jc file_to_delete_not_found |
1236 | 1236 | ||
1237 | test byte [ebx+11],0x10 ; is it directory? |
1237 | test byte [ebx+11],0x10 ; is it directory? |
1238 | jnz delete_no_access |
1238 | jnz delete_no_access |
1239 | 1239 | ||
1240 | delete_notdir: |
1240 | delete_notdir: |
1241 | call delete_entry_name |
1241 | call delete_entry_name |
1242 | cmp [hd_error],0 |
1242 | cmp [hd_error],0 |
1243 | jne delete_no_access |
1243 | jne delete_no_access |
1244 | 1244 | ||
1245 | mov eax,ecx ; first cluster of file |
1245 | mov eax,ecx ; first cluster of file |
1246 | call clear_cluster_chain |
1246 | call clear_cluster_chain |
1247 | cmp [hd_error],0 |
1247 | cmp [hd_error],0 |
1248 | jne delete_no_access |
1248 | jne delete_no_access |
1249 | 1249 | ||
1250 | popad |
1250 | popad |
1251 | xor eax,eax |
1251 | xor eax,eax |
1252 | ret |
1252 | ret |
1253 | 1253 | ||
1254 | delete_no_access_1: |
1254 | delete_no_access_1: |
1255 | add esp,4 |
1255 | add esp,4 |
1256 | delete_no_access: |
1256 | delete_no_access: |
1257 | popad |
1257 | popad |
1258 | mov eax,ERROR_ACCESS_DENIED |
1258 | mov eax,ERROR_ACCESS_DENIED |
1259 | ret |
1259 | ret |
1260 | 1260 | ||
1261 | file_to_delete_not_found: |
1261 | file_to_delete_not_found: |
1262 | cmp [hd_error],0 |
1262 | cmp [hd_error],0 |
1263 | jne delete_no_access |
1263 | jne delete_no_access |
1264 | popad |
1264 | popad |
1265 | mov eax,ERROR_FILE_NOT_FOUND |
1265 | mov eax,ERROR_FILE_NOT_FOUND |
1266 | ret |
1266 | ret |
1267 | 1267 | ||
1268 | 1268 | ||
1269 | clear_cluster_chain: |
1269 | clear_cluster_chain: |
1270 | ;----------------------------------------------------- |
1270 | ;----------------------------------------------------- |
1271 | ; input : eax = first cluster |
1271 | ; input : eax = first cluster |
1272 | ;----------------------------------------------------- |
1272 | ;----------------------------------------------------- |
1273 | push eax ecx edx |
1273 | push eax ecx edx |
1274 | xor ecx,ecx ; cluster count |
1274 | xor ecx,ecx ; cluster count |
1275 | 1275 | ||
1276 | clean_new_chain: |
1276 | clean_new_chain: |
1277 | cmp eax,[LAST_CLUSTER] ; end of file |
1277 | cmp eax,[LAST_CLUSTER] ; end of file |
1278 | ja delete_OK |
1278 | ja delete_OK |
1279 | cmp eax,2 ; unfinished fat chain or zero length file |
1279 | cmp eax,2 ; unfinished fat chain or zero length file |
1280 | jb delete_OK |
1280 | jb delete_OK |
1281 | cmp eax,[ROOT_CLUSTER] ; don't remove root cluster |
1281 | cmp eax,[ROOT_CLUSTER] ; don't remove root cluster |
1282 | jz delete_OK |
1282 | jz delete_OK |
1283 | 1283 | ||
1284 | xor edx,edx |
1284 | xor edx,edx |
1285 | call set_FAT ; clear fat entry |
1285 | call set_FAT ; clear fat entry |
1286 | cmp [hd_error],0 |
1286 | cmp [hd_error],0 |
1287 | jne access_denied_01 |
1287 | jne access_denied_01 |
1288 | 1288 | ||
1289 | inc ecx ; update cluster count |
1289 | inc ecx ; update cluster count |
1290 | mov eax,edx ; old cluster |
1290 | mov eax,edx ; old cluster |
1291 | jmp clean_new_chain |
1291 | jmp clean_new_chain |
1292 | 1292 | ||
1293 | delete_OK: |
1293 | delete_OK: |
1294 | call add_disk_free_space ; add clusters to free disk space |
1294 | call add_disk_free_space ; add clusters to free disk space |
1295 | access_denied_01: |
1295 | access_denied_01: |
1296 | pop edx ecx eax |
1296 | pop edx ecx eax |
1297 | ret |
1297 | ret |
1298 | 1298 | ||
1299 | 1299 | ||
1300 | delete_entry_name: |
1300 | delete_entry_name: |
1301 | ;----------------------------------------------------- |
1301 | ;----------------------------------------------------- |
1302 | ; input : eax = directory sector |
1302 | ; input : eax = directory sector |
1303 | ; ebx = directory pointer in buffer |
1303 | ; ebx = directory pointer in buffer |
1304 | ; longname_sec = 2 previous directory sectors |
1304 | ; longname_sec = 2 previous directory sectors |
1305 | ; output : ecx = first cluster |
1305 | ; output : ecx = first cluster |
1306 | ; change : eax,ebx,edx |
1306 | ; change : eax,ebx,edx |
1307 | ;----------------------------------------------------- |
1307 | ;----------------------------------------------------- |
1308 | mov byte [ebx],0xe5 |
1308 | mov byte [ebx],0xe5 |
1309 | mov ecx,[ebx+20-2] ; first cluster of file |
1309 | mov ecx,[ebx+20-2] ; first cluster of file |
1310 | mov cx,[ebx+26] ; 0 length files start cluster = 0 |
1310 | mov cx,[ebx+26] ; 0 length files start cluster = 0 |
1311 | and ecx,[fatMASK] |
1311 | and ecx,[fatMASK] |
1312 | 1312 | ||
1313 | delete_empty: |
1313 | delete_empty: |
1314 | sub ebx,32 |
1314 | sub ebx,32 |
1315 | cmp ebx,buffer |
1315 | cmp ebx,buffer |
1316 | jnb delete_test_long |
1316 | jnb delete_test_long |
1317 | 1317 | ||
1318 | mov ebx,buffer |
1318 | mov ebx,buffer |
1319 | call hd_write ; write directory sector back |
1319 | call hd_write ; write directory sector back |
1320 | cmp [hd_error],0 |
1320 | cmp [hd_error],0 |
1321 | jne delete_name_end |
1321 | jne delete_name_end |
1322 | 1322 | ||
1323 | xor eax,eax |
1323 | xor eax,eax |
1324 | xchg eax,[longname_sec2] |
1324 | xchg eax,[longname_sec2] |
1325 | xchg eax,[longname_sec1] |
1325 | xchg eax,[longname_sec1] |
1326 | test eax,eax ; is there previous directory sector? |
1326 | test eax,eax ; is there previous directory sector? |
1327 | jz delete_name_end ; no |
1327 | jz delete_name_end ; no |
1328 | 1328 | ||
1329 | mov ebx,buffer |
1329 | mov ebx,buffer |
1330 | call hd_read ; read previous sector |
1330 | call hd_read ; read previous sector |
1331 | cmp [hd_error],0 |
1331 | cmp [hd_error],0 |
1332 | jne delete_name_end |
1332 | jne delete_name_end |
1333 | 1333 | ||
1334 | mov ebx,buffer+0x1e0 ; start from last entry |
1334 | mov ebx,buffer+0x1e0 ; start from last entry |
1335 | 1335 | ||
1336 | delete_test_long: |
1336 | delete_test_long: |
1337 | mov dh,[ebx+11] ; file attribute |
1337 | mov dh,[ebx+11] ; file attribute |
1338 | and dh,0xf |
1338 | and dh,0xf |
1339 | cmp dh,0xf |
1339 | cmp dh,0xf |
1340 | jne delete_write_buffer |
1340 | jne delete_write_buffer |
1341 | 1341 | ||
1342 | cmp byte [ebx],0x40 ; end of long dir entry? |
1342 | cmp byte [ebx],0x40 ; end of long dir entry? |
1343 | mov byte [ebx],0xe5 |
1343 | mov byte [ebx],0xe5 |
1344 | jb delete_empty |
1344 | jb delete_empty |
1345 | 1345 | ||
1346 | delete_write_buffer: |
1346 | delete_write_buffer: |
1347 | mov ebx,buffer |
1347 | mov ebx,buffer |
1348 | call hd_write ; write directory sector back |
1348 | call hd_write ; write directory sector back |
1349 | 1349 | ||
1350 | delete_name_end: |
1350 | delete_name_end: |
1351 | ret |
1351 | ret |
1352 | 1352 | ||
1353 | 1353 | ||
1354 | get_hd_info: |
1354 | get_hd_info: |
1355 | ;----------------------------------------------------------- |
1355 | ;----------------------------------------------------------- |
1356 | ; output : eax = 0 - ok |
1356 | ; output : eax = 0 - ok |
1357 | ; 3 - unknown FS |
1357 | ; 3 - unknown FS |
1358 | ; 10 - access denied |
1358 | ; 10 - access denied |
1359 | ; edx = cluster size in bytes |
1359 | ; edx = cluster size in bytes |
1360 | ; ebx = total clusters on disk |
1360 | ; ebx = total clusters on disk |
1361 | ; ecx = free clusters on disk |
1361 | ; ecx = free clusters on disk |
1362 | ;----------------------------------------------------------- |
1362 | ;----------------------------------------------------------- |
1363 | cmp [fs_type], 16 |
1363 | cmp [fs_type], 16 |
1364 | jz info_fat_ok |
1364 | jz info_fat_ok |
1365 | cmp [fs_type], 32 |
1365 | cmp [fs_type], 32 |
1366 | jz info_fat_ok |
1366 | jz info_fat_ok |
1367 | xor edx,edx |
1367 | xor edx,edx |
1368 | xor ebx,ebx |
1368 | xor ebx,ebx |
1369 | xor ecx,ecx |
1369 | xor ecx,ecx |
1370 | mov eax,ERROR_UNKNOWN_FS |
1370 | mov eax,ERROR_UNKNOWN_FS |
1371 | ret |
1371 | ret |
1372 | 1372 | ||
1373 | info_fat_ok: |
1373 | info_fat_ok: |
1374 | ; call reserve_hd1 |
1374 | ; call reserve_hd1 |
1375 | 1375 | ||
1376 | xor ecx,ecx ; count of free clusters |
1376 | xor ecx,ecx ; count of free clusters |
1377 | mov eax,2 |
1377 | mov eax,2 |
1378 | mov ebx,[LAST_CLUSTER] |
1378 | mov ebx,[LAST_CLUSTER] |
1379 | 1379 | ||
1380 | info_cluster: |
1380 | info_cluster: |
1381 | push eax |
1381 | push eax |
1382 | call get_FAT ; get cluster info |
1382 | call get_FAT ; get cluster info |
1383 | cmp [hd_error],0 |
1383 | cmp [hd_error],0 |
1384 | jne info_access_denied |
1384 | jne info_access_denied |
1385 | 1385 | ||
1386 | test eax,eax ; is it free? |
1386 | test eax,eax ; is it free? |
1387 | jnz info_used ; no |
1387 | jnz info_used ; no |
1388 | inc ecx |
1388 | inc ecx |
1389 | 1389 | ||
1390 | info_used: |
1390 | info_used: |
1391 | pop eax |
1391 | pop eax |
1392 | inc eax |
1392 | inc eax |
1393 | cmp eax,ebx ; is above last cluster? |
1393 | cmp eax,ebx ; is above last cluster? |
1394 | jbe info_cluster ; no. test next cluster |
1394 | jbe info_cluster ; no. test next cluster |
1395 | 1395 | ||
1396 | dec ebx ; cluster count |
1396 | dec ebx ; cluster count |
1397 | imul edx,[SECTORS_PER_CLUSTER],512 ; cluster size in bytes |
1397 | imul edx,[SECTORS_PER_CLUSTER],512 ; cluster size in bytes |
1398 | mov [hd1_status],0 |
1398 | mov [hd1_status],0 |
1399 | xor eax,eax |
1399 | xor eax,eax |
1400 | ret |
1400 | ret |
1401 | 1401 | ||
1402 | info_access_denied: |
1402 | info_access_denied: |
1403 | add esp,4 |
1403 | add esp,4 |
1404 | xor edx,edx |
1404 | xor edx,edx |
1405 | xor ebx,ebx |
1405 | xor ebx,ebx |
1406 | xor ecx,ecx |
1406 | xor ecx,ecx |
1407 | mov eax,ERROR_ACCESS_DENIED |
1407 | mov eax,ERROR_ACCESS_DENIED |
1408 | ret |
1408 | ret |
1409 | 1409 | ||
1410 | update_disk: |
1410 | update_disk: |
1411 | ;----------------------------------------------------------- |
1411 | ;----------------------------------------------------------- |
1412 | ; write changed fat and cache to disk |
1412 | ; write changed fat and cache to disk |
1413 | ;----------------------------------------------------------- |
1413 | ;----------------------------------------------------------- |
1414 | cmp [fat_change],0 ; is fat changed? |
1414 | cmp [fat_change],0 ; is fat changed? |
1415 | je upd_no_change |
1415 | je upd_no_change |
1416 | 1416 | ||
1417 | call write_fat_sector |
1417 | call write_fat_sector |
1418 | cmp [hd_error],0 |
1418 | cmp [hd_error],0 |
1419 | jne update_disk_acces_denied |
1419 | jne update_disk_acces_denied |
1420 | 1420 | ||
1421 | upd_no_change: |
1421 | upd_no_change: |
1422 | 1422 | ||
1423 | call write_cache |
1423 | call write_cache |
1424 | update_disk_acces_denied: |
1424 | update_disk_acces_denied: |
1425 | ret |
1425 | ret |
1426 | 1426 | ||
1427 | read_hd_file: |
1427 | read_hd_file: |
1428 | ;----------------------------------------------------------------- |
1428 | ;----------------------------------------------------------------- |
1429 | ; |
1429 | ; |
1430 | ; Converting old reading function for hd-application start. |
1430 | ; Converting old reading function for hd-application start. |
1431 | ; |
1431 | ; |
1432 | ; IN: |
1432 | ; IN: |
1433 | ; |
1433 | ; |
1434 | ; eax - pointer to file (0 = read only first sector of drive: eg 'label') |
1434 | ; eax - pointer to file (0 = read only first sector of drive: eg 'label') |
1435 | ; ebx - file lenght |
1435 | ; ebx - file lenght |
1436 | ; ecx - start 512 byte block number |
1436 | ; ecx - start 512 byte block number |
1437 | ; edx - number of blocks to read |
1437 | ; edx - number of blocks to read |
1438 | ; esi - pointer to return/work area (atleast 20 000 bytes) |
1438 | ; esi - pointer to return/work area (atleast 20 000 bytes) |
1439 | ; |
1439 | ; |
1440 | ; For new read function |
1440 | ; For new read function |
1441 | ; |
1441 | ; |
1442 | ; EAX (PAR0) pointer to file-name |
1442 | ; EAX (PAR0) pointer to file-name |
1443 | ; ECX (PAR1) pointer to buffer |
1443 | ; ECX (PAR1) pointer to buffer |
1444 | ; EBX (PAR2) vt file blocks to read |
1444 | ; EBX (PAR2) vt file blocks to read |
1445 | ; EDX (PAR3) pointer to path |
1445 | ; EDX (PAR3) pointer to path |
1446 | ; ESI vt first 512 block to read |
1446 | ; ESI vt first 512 block to read |
1447 | ; EDI if 0 - return root |
1447 | ; EDI if 0 - return root |
1448 | ;-------------------------------------------------------------------------- |
1448 | ;-------------------------------------------------------------------------- |
1449 | 1449 | ||
1450 | push ecx esi edi |
1450 | push ecx esi edi |
1451 | mov esi,eax |
1451 | mov esi,eax |
1452 | mov edi,startpath |
1452 | mov edi,startpath |
1453 | mov ecx,250 |
1453 | mov ecx,250 |
1454 | cld |
1454 | cld |
1455 | rep movsb |
1455 | rep movsb |
1456 | pop edi esi ecx |
1456 | pop edi esi ecx |
1457 | 1457 | ||
1458 | mov eax,startpath |
1458 | mov eax,startpath |
1459 | mov [eax+ebx-12],byte 0 |
1459 | mov [eax+ebx-12],byte 0 |
1460 | 1460 | ||
1461 | push eax ebx ecx edx esi |
1461 | push eax ebx ecx edx esi |
1462 | 1462 | ||
1463 | pop ecx ; pointer to buffer |
1463 | pop ecx ; pointer to buffer |
1464 | add ecx,1024 |
1464 | add ecx,1024 |
1465 | pop ebx ; number of blocks to read |
1465 | pop ebx ; number of blocks to read |
1466 | pop esi ; first block to read |
1466 | pop esi ; first block to read |
1467 | dec esi |
1467 | dec esi |
1468 | pop eax ; file length |
1468 | pop eax ; file length |
1469 | pop edx ; pointer to path |
1469 | pop edx ; pointer to path |
1470 | 1470 | ||
1471 | mov edi,12 |
1471 | mov edi,12 |
1472 | lea eax,[eax+edx-12+1] |
1472 | lea eax,[eax+edx-12+1] |
1473 | call file_read |
1473 | call file_read |
1474 | 1474 | ||
1475 | ret |
1475 | ret |
1476 | 1476 | ||
1477 | ; \begin{diamond} |
1477 | ; \begin{diamond} |
1478 | hd_find_lfn: |
1478 | hd_find_lfn: |
1479 | ; in: esi->name |
1479 | ; in: esi->name |
1480 | ; out: CF=1 - file not found |
1480 | ; out: CF=1 - file not found |
1481 | ; else CF=0 and edi->direntry, eax=sector |
1481 | ; else CF=0 and edi->direntry, eax=sector |
1482 | ; destroys eax |
1482 | ; destroys eax |
1483 | push esi edi |
1483 | push esi edi |
1484 | push 0 |
1484 | push 0 |
1485 | push 0 |
1485 | push 0 |
1486 | push fat16_root_first |
1486 | push fat16_root_first |
1487 | push fat16_root_next |
1487 | push fat16_root_next |
1488 | mov eax, [ROOT_CLUSTER] |
1488 | mov eax, [ROOT_CLUSTER] |
1489 | cmp [fs_type], 32 |
1489 | cmp [fs_type], 32 |
1490 | jz .fat32 |
1490 | jz .fat32 |
1491 | .loop: |
1491 | .loop: |
1492 | call fat_find_lfn |
1492 | call fat_find_lfn |
1493 | jc .notfound |
1493 | jc .notfound |
1494 | cmp byte [esi], 0 |
1494 | cmp byte [esi], 0 |
1495 | jz .found |
1495 | jz .found |
1496 | test byte [edi+11], 10h |
1496 | test byte [edi+11], 10h |
1497 | jz .notfound |
1497 | jz .notfound |
1498 | and dword [esp+12], 0 |
1498 | and dword [esp+12], 0 |
1499 | mov eax, [edi+20-2] |
1499 | mov eax, [edi+20-2] |
1500 | mov ax, [edi+26] ; cluster |
1500 | mov ax, [edi+26] ; cluster |
1501 | .fat32: |
1501 | .fat32: |
1502 | mov [esp+8], eax |
1502 | mov [esp+8], eax |
1503 | mov dword [esp+4], fat_notroot_first |
1503 | mov dword [esp+4], fat_notroot_first |
1504 | mov dword [esp], fat_notroot_next |
1504 | mov dword [esp], fat_notroot_next |
1505 | jmp .loop |
1505 | jmp .loop |
1506 | .notfound: |
1506 | .notfound: |
1507 | add esp, 16 |
1507 | add esp, 16 |
1508 | pop edi esi |
1508 | pop edi esi |
1509 | stc |
1509 | stc |
1510 | ret |
1510 | ret |
1511 | .found: |
1511 | .found: |
1512 | lea eax, [esp+8] |
1512 | lea eax, [esp+8] |
1513 | cmp dword [eax], 0 |
1513 | cmp dword [eax], 0 |
1514 | jz .root |
1514 | jz .root |
1515 | call fat_get_sector |
1515 | call fat_get_sector |
1516 | jmp .cmn |
1516 | jmp .cmn |
1517 | .root: |
1517 | .root: |
1518 | mov eax, [eax+4] |
1518 | mov eax, [eax+4] |
1519 | add eax, [ROOT_START] |
1519 | add eax, [ROOT_START] |
1520 | .cmn: |
1520 | .cmn: |
1521 | add esp, 20 ; CF=0 |
1521 | add esp, 20 ; CF=0 |
1522 | pop esi |
1522 | pop esi |
1523 | ret |
1523 | ret |
1524 | 1524 | ||
1525 | ;---------------------------------------------------------------- |
1525 | ;---------------------------------------------------------------- |
1526 | ; |
1526 | ; |
1527 | ; fs_HdRead - LFN variant for reading hard disk |
1527 | ; fs_HdRead - LFN variant for reading hard disk |
1528 | ; |
1528 | ; |
1529 | ; esi points to filename |
1529 | ; esi points to filename |
1530 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1530 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1531 | ; may be ebx=0 - start from first byte |
1531 | ; may be ebx=0 - start from first byte |
1532 | ; ecx number of bytes to read, 0+ |
1532 | ; ecx number of bytes to read, 0+ |
1533 | ; edx mem location to return data |
1533 | ; edx mem location to return data |
1534 | ; |
1534 | ; |
1535 | ; ret ebx = bytes read or 0xffffffff file not found |
1535 | ; ret ebx = bytes read or 0xffffffff file not found |
1536 | ; eax = 0 ok read or other = errormsg |
1536 | ; eax = 0 ok read or other = errormsg |
1537 | ; |
1537 | ; |
1538 | ;-------------------------------------------------------------- |
1538 | ;-------------------------------------------------------------- |
1539 | fs_HdRead: |
1539 | fs_HdRead: |
1540 | cmp [fs_type], 16 |
1540 | cmp [fs_type], 16 |
1541 | jz @f |
1541 | jz @f |
1542 | cmp [fs_type], 32 |
1542 | cmp [fs_type], 32 |
1543 | jz @f |
1543 | jz @f |
1544 | cmp [fs_type], 1 |
1544 | cmp [fs_type], 1 |
1545 | jz ntfs_HdRead |
1545 | jz ntfs_HdRead |
1546 | or ebx, -1 |
1546 | or ebx, -1 |
1547 | mov eax, ERROR_UNKNOWN_FS |
1547 | mov eax, ERROR_UNKNOWN_FS |
1548 | ret |
1548 | ret |
1549 | @@: |
1549 | @@: |
1550 | push edi |
1550 | push edi |
1551 | cmp byte [esi], 0 |
1551 | cmp byte [esi], 0 |
1552 | jnz @f |
1552 | jnz @f |
1553 | .noaccess: |
1553 | .noaccess: |
1554 | pop edi |
1554 | pop edi |
1555 | .noaccess_2: |
1555 | .noaccess_2: |
1556 | or ebx, -1 |
1556 | or ebx, -1 |
1557 | mov eax, ERROR_ACCESS_DENIED |
1557 | mov eax, ERROR_ACCESS_DENIED |
1558 | ret |
1558 | ret |
1559 | 1559 | ||
1560 | .noaccess_3: |
1560 | .noaccess_3: |
1561 | add esp,4 |
1561 | add esp,4 |
1562 | .noaccess_1: |
1562 | .noaccess_1: |
1563 | add esp,4 |
1563 | add esp,4 |
1564 | .noaccess_4: |
1564 | .noaccess_4: |
1565 | add esp,4*5 |
1565 | add esp,4*5 |
1566 | jmp .noaccess_2 |
1566 | jmp .noaccess_2 |
1567 | 1567 | ||
1568 | @@: |
1568 | @@: |
1569 | call hd_find_lfn |
1569 | call hd_find_lfn |
1570 | jnc .found |
1570 | jnc .found |
1571 | pop edi |
1571 | pop edi |
1572 | cmp [hd_error],0 |
1572 | cmp [hd_error],0 |
1573 | jne .noaccess_2 |
1573 | jne .noaccess_2 |
1574 | or ebx, -1 |
1574 | or ebx, -1 |
1575 | mov eax, ERROR_FILE_NOT_FOUND |
1575 | mov eax, ERROR_FILE_NOT_FOUND |
1576 | ret |
1576 | ret |
1577 | 1577 | ||
1578 | .found: |
1578 | .found: |
1579 | test byte [edi+11], 0x10 ; do not allow read directories |
1579 | test byte [edi+11], 0x10 ; do not allow read directories |
1580 | jnz .noaccess |
1580 | jnz .noaccess |
1581 | test ebx, ebx |
1581 | test ebx, ebx |
1582 | jz .l1 |
1582 | jz .l1 |
1583 | cmp dword [ebx+4], 0 |
1583 | cmp dword [ebx+4], 0 |
1584 | jz @f |
1584 | jz @f |
1585 | xor ebx, ebx |
1585 | xor ebx, ebx |
1586 | .reteof: |
1586 | .reteof: |
1587 | mov eax, 6 |
1587 | mov eax, 6 |
1588 | pop edi |
1588 | pop edi |
1589 | ret |
1589 | ret |
1590 | @@: |
1590 | @@: |
1591 | mov ebx, [ebx] |
1591 | mov ebx, [ebx] |
1592 | .l1: |
1592 | .l1: |
1593 | push ecx edx |
1593 | push ecx edx |
1594 | push 0 |
1594 | push 0 |
1595 | mov eax, [edi+28] |
1595 | mov eax, [edi+28] |
1596 | sub eax, ebx |
1596 | sub eax, ebx |
1597 | jb .eof |
1597 | jb .eof |
1598 | cmp eax, ecx |
1598 | cmp eax, ecx |
1599 | jae @f |
1599 | jae @f |
1600 | mov ecx, eax |
1600 | mov ecx, eax |
1601 | mov byte [esp], 6 |
1601 | mov byte [esp], 6 |
1602 | @@: |
1602 | @@: |
1603 | mov eax, [edi+20-2] |
1603 | mov eax, [edi+20-2] |
1604 | mov ax, [edi+26] |
1604 | mov ax, [edi+26] |
1605 | ; now eax=cluster, ebx=position, ecx=count, edx=buffer for data |
1605 | ; now eax=cluster, ebx=position, ecx=count, edx=buffer for data |
1606 | .new_cluster: |
1606 | .new_cluster: |
1607 | jecxz .new_sector |
1607 | jecxz .new_sector |
1608 | test eax, eax |
1608 | test eax, eax |
1609 | jz .eof |
1609 | jz .eof |
1610 | cmp eax, [fatRESERVED] |
1610 | cmp eax, [fatRESERVED] |
1611 | jae .eof |
1611 | jae .eof |
1612 | mov [cluster_tmp], eax |
1612 | mov [cluster_tmp], eax |
1613 | dec eax |
1613 | dec eax |
1614 | dec eax |
1614 | dec eax |
1615 | mov edi, [SECTORS_PER_CLUSTER] |
1615 | mov edi, [SECTORS_PER_CLUSTER] |
1616 | imul eax, edi |
1616 | imul eax, edi |
1617 | add eax, [DATA_START] |
1617 | add eax, [DATA_START] |
1618 | .new_sector: |
1618 | .new_sector: |
1619 | test ecx, ecx |
1619 | test ecx, ecx |
1620 | jz .done |
1620 | jz .done |
1621 | sub ebx, 512 |
1621 | sub ebx, 512 |
1622 | jae .skip |
1622 | jae .skip |
1623 | add ebx, 512 |
1623 | add ebx, 512 |
1624 | jnz .force_buf |
1624 | jnz .force_buf |
1625 | cmp ecx, 512 |
1625 | cmp ecx, 512 |
1626 | jb .force_buf |
1626 | jb .force_buf |
1627 | ; we may read directly to given buffer |
1627 | ; we may read directly to given buffer |
1628 | push ebx |
1628 | push ebx |
1629 | mov ebx, edx |
1629 | mov ebx, edx |
1630 | call hd_read |
1630 | call hd_read |
1631 | cmp [hd_error],0 |
1631 | cmp [hd_error],0 |
1632 | jne .noaccess_1 |
1632 | jne .noaccess_1 |
1633 | pop ebx |
1633 | pop ebx |
1634 | add edx, 512 |
1634 | add edx, 512 |
1635 | sub ecx, 512 |
1635 | sub ecx, 512 |
1636 | jmp .skip |
1636 | jmp .skip |
1637 | .force_buf: |
1637 | .force_buf: |
1638 | ; we must read sector to temporary buffer and then copy it to destination |
1638 | ; we must read sector to temporary buffer and then copy it to destination |
1639 | push eax ebx |
1639 | push eax ebx |
1640 | mov ebx, buffer |
1640 | mov ebx, buffer |
1641 | call hd_read |
1641 | call hd_read |
1642 | cmp [hd_error],0 |
1642 | cmp [hd_error],0 |
1643 | jne .noaccess_3 |
1643 | jne .noaccess_3 |
1644 | 1644 | ||
1645 | mov eax, ebx |
1645 | mov eax, ebx |
1646 | pop ebx |
1646 | pop ebx |
1647 | add eax, ebx |
1647 | add eax, ebx |
1648 | push ecx |
1648 | push ecx |
1649 | add ecx, ebx |
1649 | add ecx, ebx |
1650 | cmp ecx, 512 |
1650 | cmp ecx, 512 |
1651 | jbe @f |
1651 | jbe @f |
1652 | mov ecx, 512 |
1652 | mov ecx, 512 |
1653 | @@: |
1653 | @@: |
1654 | sub ecx, ebx |
1654 | sub ecx, ebx |
1655 | mov ebx, edx |
1655 | mov ebx, edx |
1656 | call memmove |
1656 | call memmove |
1657 | add edx, ecx |
1657 | add edx, ecx |
1658 | sub [esp], ecx |
1658 | sub [esp], ecx |
1659 | pop ecx |
1659 | pop ecx |
1660 | pop eax |
1660 | pop eax |
1661 | xor ebx, ebx |
1661 | xor ebx, ebx |
1662 | .skip: |
1662 | .skip: |
1663 | inc eax |
1663 | inc eax |
1664 | dec edi |
1664 | dec edi |
1665 | jnz .new_sector |
1665 | jnz .new_sector |
1666 | mov eax, [cluster_tmp] |
1666 | mov eax, [cluster_tmp] |
1667 | call get_FAT |
1667 | call get_FAT |
1668 | cmp [hd_error],0 |
1668 | cmp [hd_error],0 |
1669 | jne .noaccess_4 |
1669 | jne .noaccess_4 |
1670 | 1670 | ||
1671 | jmp .new_cluster |
1671 | jmp .new_cluster |
1672 | .done: |
1672 | .done: |
1673 | mov ebx, edx |
1673 | mov ebx, edx |
1674 | pop eax edx ecx edi |
1674 | pop eax edx ecx edi |
1675 | sub ebx, edx |
1675 | sub ebx, edx |
1676 | ret |
1676 | ret |
1677 | .eof: |
1677 | .eof: |
1678 | mov ebx, edx |
1678 | mov ebx, edx |
1679 | pop eax edx ecx |
1679 | pop eax edx ecx |
1680 | sub ebx, edx |
1680 | sub ebx, edx |
1681 | jmp .reteof |
1681 | jmp .reteof |
1682 | 1682 | ||
1683 | ;---------------------------------------------------------------- |
1683 | ;---------------------------------------------------------------- |
1684 | ; |
1684 | ; |
1685 | ; fs_HdReadFolder - LFN variant for reading hard disk folder |
1685 | ; fs_HdReadFolder - LFN variant for reading hard disk folder |
1686 | ; |
1686 | ; |
1687 | ; esi points to filename |
1687 | ; esi points to filename |
1688 | ; ebx pointer to structure 32-bit number = first wanted block, 0+ |
1688 | ; ebx pointer to structure 32-bit number = first wanted block, 0+ |
1689 | ; & flags (bitfields) |
1689 | ; & flags (bitfields) |
1690 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
1690 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
1691 | ; ecx number of blocks to read, 0+ |
1691 | ; ecx number of blocks to read, 0+ |
1692 | ; edx mem location to return data |
1692 | ; edx mem location to return data |
1693 | ; |
1693 | ; |
1694 | ; ret ebx = blocks read or 0xffffffff folder not found |
1694 | ; ret ebx = blocks read or 0xffffffff folder not found |
1695 | ; eax = 0 ok read or other = errormsg |
1695 | ; eax = 0 ok read or other = errormsg |
1696 | ; |
1696 | ; |
1697 | ;-------------------------------------------------------------- |
1697 | ;-------------------------------------------------------------- |
1698 | fs_HdReadFolder: |
1698 | fs_HdReadFolder: |
1699 | cmp [fs_type], 1 |
1699 | cmp [fs_type], 1 |
1700 | jz ntfs_HdReadFolder |
1700 | jz ntfs_HdReadFolder |
1701 | cmp [fs_type], 16 |
1701 | cmp [fs_type], 16 |
1702 | jz @f |
1702 | jz @f |
1703 | cmp [fs_type], 32 |
1703 | cmp [fs_type], 32 |
1704 | jz @f |
1704 | jz @f |
1705 | push ERROR_UNSUPPORTED_FS |
1705 | push ERROR_UNSUPPORTED_FS |
1706 | pop eax |
1706 | pop eax |
1707 | or ebx, -1 |
1707 | or ebx, -1 |
1708 | ret |
1708 | ret |
1709 | @@: |
1709 | @@: |
1710 | mov eax, [ROOT_CLUSTER] |
1710 | mov eax, [ROOT_CLUSTER] |
1711 | push edi |
1711 | push edi |
1712 | cmp byte [esi], 0 |
1712 | cmp byte [esi], 0 |
1713 | jz .doit |
1713 | jz .doit |
1714 | call hd_find_lfn |
1714 | call hd_find_lfn |
1715 | jnc .found |
1715 | jnc .found |
1716 | pop edi |
1716 | pop edi |
1717 | or ebx, -1 |
1717 | or ebx, -1 |
1718 | mov eax, ERROR_FILE_NOT_FOUND |
1718 | mov eax, ERROR_FILE_NOT_FOUND |
1719 | ret |
1719 | ret |
1720 | .found: |
1720 | .found: |
1721 | test byte [edi+11], 0x10 ; do not allow read files |
1721 | test byte [edi+11], 0x10 ; do not allow read files |
1722 | jnz .found_dir |
1722 | jnz .found_dir |
1723 | pop edi |
1723 | pop edi |
1724 | or ebx, -1 |
1724 | or ebx, -1 |
1725 | mov eax, ERROR_ACCESS_DENIED |
1725 | mov eax, ERROR_ACCESS_DENIED |
1726 | ret |
1726 | ret |
1727 | .found_dir: |
1727 | .found_dir: |
1728 | mov eax, [edi+20-2] |
1728 | mov eax, [edi+20-2] |
1729 | mov ax, [edi+26] ; eax=cluster |
1729 | mov ax, [edi+26] ; eax=cluster |
1730 | .doit: |
1730 | .doit: |
1731 | push esi ecx |
1731 | push esi ecx |
1732 | push ebp |
1732 | push ebp |
1733 | sub esp, 262*2 ; reserve space for LFN |
1733 | sub esp, 262*2 ; reserve space for LFN |
1734 | mov ebp, esp |
1734 | mov ebp, esp |
1735 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE name |
1735 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE name |
1736 | mov ebx, [ebx] |
1736 | mov ebx, [ebx] |
1737 | ; init header |
1737 | ; init header |
1738 | push eax ecx |
1738 | push eax ecx |
1739 | mov edi, edx |
1739 | mov edi, edx |
1740 | mov ecx, 32/4 |
1740 | mov ecx, 32/4 |
1741 | xor eax, eax |
1741 | xor eax, eax |
1742 | rep stosd |
1742 | rep stosd |
1743 | pop ecx eax |
1743 | pop ecx eax |
1744 | mov byte [edx], 1 ; version |
1744 | mov byte [edx], 1 ; version |
1745 | mov esi, edi ; esi points to BDFE |
1745 | mov esi, edi ; esi points to BDFE |
1746 | .new_cluster: |
1746 | .new_cluster: |
1747 | mov [cluster_tmp], eax |
1747 | mov [cluster_tmp], eax |
1748 | test eax, eax |
1748 | test eax, eax |
1749 | jnz @f |
1749 | jnz @f |
1750 | cmp [fs_type], 32 |
1750 | cmp [fs_type], 32 |
1751 | jz .notfound |
1751 | jz .notfound |
1752 | mov eax, [ROOT_START] |
1752 | mov eax, [ROOT_START] |
1753 | push [ROOT_SECTORS] |
1753 | push [ROOT_SECTORS] |
1754 | push ebx |
1754 | push ebx |
1755 | jmp .new_sector |
1755 | jmp .new_sector |
1756 | @@: |
1756 | @@: |
1757 | dec eax |
1757 | dec eax |
1758 | dec eax |
1758 | dec eax |
1759 | imul eax, [SECTORS_PER_CLUSTER] |
1759 | imul eax, [SECTORS_PER_CLUSTER] |
1760 | push [SECTORS_PER_CLUSTER] |
1760 | push [SECTORS_PER_CLUSTER] |
1761 | add eax, [DATA_START] |
1761 | add eax, [DATA_START] |
1762 | push ebx |
1762 | push ebx |
1763 | .new_sector: |
1763 | .new_sector: |
1764 | mov ebx, buffer |
1764 | mov ebx, buffer |
1765 | mov edi, ebx |
1765 | mov edi, ebx |
1766 | call hd_read |
1766 | call hd_read |
1767 | cmp [hd_error], 0 |
1767 | cmp [hd_error], 0 |
1768 | jnz .notfound2 |
1768 | jnz .notfound2 |
1769 | add ebx, 512 |
1769 | add ebx, 512 |
1770 | push eax |
1770 | push eax |
1771 | .l1: |
1771 | .l1: |
1772 | call fat_get_name |
1772 | call fat_get_name |
1773 | jc .l2 |
1773 | jc .l2 |
1774 | cmp byte [edi+11], 0xF |
1774 | cmp byte [edi+11], 0xF |
1775 | jnz .do_bdfe |
1775 | jnz .do_bdfe |
1776 | add edi, 0x20 |
1776 | add edi, 0x20 |
1777 | cmp edi, ebx |
1777 | cmp edi, ebx |
1778 | jb .do_bdfe |
1778 | jb .do_bdfe |
1779 | pop eax |
1779 | pop eax |
1780 | inc eax |
1780 | inc eax |
1781 | dec dword [esp+4] |
1781 | dec dword [esp+4] |
1782 | jnz @f |
1782 | jnz @f |
1783 | mov eax, [cluster_tmp] |
1783 | mov eax, [cluster_tmp] |
1784 | test eax, eax |
1784 | test eax, eax |
1785 | jz .done |
1785 | jz .done |
1786 | call get_FAT |
1786 | call get_FAT |
1787 | cmp [hd_error], 0 |
1787 | cmp [hd_error], 0 |
1788 | jnz .notfound2 |
1788 | jnz .notfound2 |
1789 | cmp eax, 2 |
1789 | cmp eax, 2 |
1790 | jb .done |
1790 | jb .done |
1791 | cmp eax, [fatRESERVED] |
1791 | cmp eax, [fatRESERVED] |
1792 | jae .done |
1792 | jae .done |
1793 | push eax |
1793 | push eax |
1794 | mov eax, [SECTORS_PER_CLUSTER] |
1794 | mov eax, [SECTORS_PER_CLUSTER] |
1795 | mov [esp+8], eax |
1795 | mov [esp+8], eax |
1796 | pop eax |
1796 | pop eax |
1797 | mov [cluster_tmp], eax |
1797 | mov [cluster_tmp], eax |
1798 | dec eax |
1798 | dec eax |
1799 | dec eax |
1799 | dec eax |
1800 | imul eax, [SECTORS_PER_CLUSTER] |
1800 | imul eax, [SECTORS_PER_CLUSTER] |
1801 | add eax, [DATA_START] |
1801 | add eax, [DATA_START] |
1802 | @@: |
1802 | @@: |
1803 | mov ebx, buffer |
1803 | mov ebx, buffer |
1804 | mov edi, ebx |
1804 | mov edi, ebx |
1805 | call hd_read |
1805 | call hd_read |
1806 | cmp [hd_error], 0 |
1806 | cmp [hd_error], 0 |
1807 | jnz .notfound2 |
1807 | jnz .notfound2 |
1808 | add ebx, 512 |
1808 | add ebx, 512 |
1809 | push eax |
1809 | push eax |
1810 | .do_bdfe: |
1810 | .do_bdfe: |
1811 | inc dword [edx+8] ; new file found |
1811 | inc dword [edx+8] ; new file found |
1812 | dec dword [esp+4] |
1812 | dec dword [esp+4] |
1813 | jns .l2 |
1813 | jns .l2 |
1814 | dec ecx |
1814 | dec ecx |
1815 | js .l2 |
1815 | js .l2 |
1816 | inc dword [edx+4] ; new file block copied |
1816 | inc dword [edx+4] ; new file block copied |
1817 | call fat_entry_to_bdfe |
1817 | call fat_entry_to_bdfe |
1818 | .l2: |
1818 | .l2: |
1819 | add edi, 0x20 |
1819 | add edi, 0x20 |
1820 | cmp edi, ebx |
1820 | cmp edi, ebx |
1821 | jb .l1 |
1821 | jb .l1 |
1822 | pop eax |
1822 | pop eax |
1823 | inc eax |
1823 | inc eax |
1824 | dec dword [esp+4] |
1824 | dec dword [esp+4] |
1825 | jnz .new_sector |
1825 | jnz .new_sector |
1826 | mov eax, [cluster_tmp] |
1826 | mov eax, [cluster_tmp] |
1827 | test eax, eax |
1827 | test eax, eax |
1828 | jz .done |
1828 | jz .done |
1829 | call get_FAT |
1829 | call get_FAT |
1830 | cmp [hd_error], 0 |
1830 | cmp [hd_error], 0 |
1831 | jnz .notfound2 |
1831 | jnz .notfound2 |
1832 | cmp eax, 2 |
1832 | cmp eax, 2 |
1833 | jb .done |
1833 | jb .done |
1834 | cmp eax, [fatRESERVED] |
1834 | cmp eax, [fatRESERVED] |
1835 | jae .done |
1835 | jae .done |
1836 | push eax |
1836 | push eax |
1837 | mov eax, [SECTORS_PER_CLUSTER] |
1837 | mov eax, [SECTORS_PER_CLUSTER] |
1838 | mov [esp+8], eax |
1838 | mov [esp+8], eax |
1839 | pop eax |
1839 | pop eax |
1840 | pop ebx |
1840 | pop ebx |
1841 | add esp, 4 |
1841 | add esp, 4 |
1842 | jmp .new_cluster |
1842 | jmp .new_cluster |
1843 | .notfound2: |
1843 | .notfound2: |
1844 | add esp, 8 |
1844 | add esp, 8 |
1845 | .notfound: |
1845 | .notfound: |
1846 | add esp, 262*2+4 |
1846 | add esp, 262*2+4 |
1847 | pop ebp ecx esi edi |
1847 | pop ebp ecx esi edi |
1848 | mov eax, ERROR_FILE_NOT_FOUND |
1848 | mov eax, ERROR_FILE_NOT_FOUND |
1849 | or ebx, -1 |
1849 | or ebx, -1 |
1850 | ret |
1850 | ret |
1851 | .done: |
1851 | .done: |
1852 | add esp, 262*2+4+8 |
1852 | add esp, 262*2+4+8 |
1853 | pop ebp |
1853 | pop ebp |
1854 | mov ebx, [edx+4] |
1854 | mov ebx, [edx+4] |
1855 | xor eax, eax |
1855 | xor eax, eax |
1856 | dec ecx |
1856 | dec ecx |
1857 | js @f |
1857 | js @f |
1858 | mov al, ERROR_END_OF_FILE |
1858 | mov al, ERROR_END_OF_FILE |
1859 | @@: |
1859 | @@: |
1860 | pop ecx esi edi |
1860 | pop ecx esi edi |
1861 | ret |
1861 | ret |
1862 | 1862 | ||
1863 | fat16_root_next: |
1863 | fat16_root_next: |
1864 | cmp edi, buffer+0x200-0x20 |
1864 | cmp edi, buffer+0x200-0x20 |
1865 | jae fat16_root_next_sector |
1865 | jae fat16_root_next_sector |
1866 | add edi, 0x20 |
1866 | add edi, 0x20 |
1867 | ret ; CF=0 |
1867 | ret ; CF=0 |
1868 | fat16_root_next_sector: |
1868 | fat16_root_next_sector: |
1869 | ; read next sector |
1869 | ; read next sector |
1870 | push [longname_sec2] |
1870 | push [longname_sec2] |
1871 | pop [longname_sec1] |
1871 | pop [longname_sec1] |
1872 | push ecx |
1872 | push ecx |
1873 | mov ecx, [eax+4] |
1873 | mov ecx, [eax+4] |
1874 | push ecx |
1874 | push ecx |
1875 | add ecx, [ROOT_START] |
1875 | add ecx, [ROOT_START] |
1876 | mov [longname_sec2], ecx |
1876 | mov [longname_sec2], ecx |
1877 | pop ecx |
1877 | pop ecx |
1878 | inc ecx |
1878 | inc ecx |
1879 | mov [eax+4], ecx |
1879 | mov [eax+4], ecx |
1880 | cmp ecx, [ROOT_SECTORS] |
1880 | cmp ecx, [ROOT_SECTORS] |
1881 | pop ecx |
1881 | pop ecx |
1882 | jae fat16_root_first.readerr |
1882 | jae fat16_root_first.readerr |
1883 | fat16_root_first: |
1883 | fat16_root_first: |
1884 | mov eax, [eax+4] |
1884 | mov eax, [eax+4] |
1885 | add eax, [ROOT_START] |
1885 | add eax, [ROOT_START] |
1886 | push ebx |
1886 | push ebx |
1887 | mov edi, buffer |
1887 | mov edi, buffer |
1888 | mov ebx, edi |
1888 | mov ebx, edi |
1889 | call hd_read |
1889 | call hd_read |
1890 | pop ebx |
1890 | pop ebx |
1891 | cmp [hd_error], 0 |
1891 | cmp [hd_error], 0 |
1892 | jnz .readerr |
1892 | jnz .readerr |
1893 | ret ; CF=0 |
1893 | ret ; CF=0 |
1894 | .readerr: |
1894 | .readerr: |
1895 | stc |
1895 | stc |
1896 | ret |
1896 | ret |
1897 | fat16_root_begin_write: |
1897 | fat16_root_begin_write: |
1898 | push edi eax |
1898 | push edi eax |
1899 | call fat16_root_first |
1899 | call fat16_root_first |
1900 | pop eax edi |
1900 | pop eax edi |
1901 | ret |
1901 | ret |
1902 | fat16_root_end_write: |
1902 | fat16_root_end_write: |
1903 | pusha |
1903 | pusha |
1904 | mov eax, [eax+4] |
1904 | mov eax, [eax+4] |
1905 | add eax, [ROOT_START] |
1905 | add eax, [ROOT_START] |
1906 | mov ebx, buffer |
1906 | mov ebx, buffer |
1907 | call hd_write |
1907 | call hd_write |
1908 | popa |
1908 | popa |
1909 | ret |
1909 | ret |
1910 | fat16_root_next_write: |
1910 | fat16_root_next_write: |
1911 | cmp edi, buffer+0x200 |
1911 | cmp edi, buffer+0x200 |
1912 | jae @f |
1912 | jae @f |
1913 | ret |
1913 | ret |
1914 | @@: |
1914 | @@: |
1915 | call fat16_root_end_write |
1915 | call fat16_root_end_write |
1916 | jmp fat16_root_next_sector |
1916 | jmp fat16_root_next_sector |
1917 | fat16_root_extend_dir: |
1917 | fat16_root_extend_dir: |
1918 | stc |
1918 | stc |
1919 | ret |
1919 | ret |
1920 | 1920 | ||
1921 | fat_notroot_next: |
1921 | fat_notroot_next: |
1922 | cmp edi, buffer+0x200-0x20 |
1922 | cmp edi, buffer+0x200-0x20 |
1923 | jae fat_notroot_next_sector |
1923 | jae fat_notroot_next_sector |
1924 | add edi, 0x20 |
1924 | add edi, 0x20 |
1925 | ret ; CF=0 |
1925 | ret ; CF=0 |
1926 | fat_notroot_next_sector: |
1926 | fat_notroot_next_sector: |
1927 | push [longname_sec2] |
1927 | push [longname_sec2] |
1928 | pop [longname_sec1] |
1928 | pop [longname_sec1] |
1929 | push eax |
1929 | push eax |
1930 | call fat_get_sector |
1930 | call fat_get_sector |
1931 | mov [longname_sec2], eax |
1931 | mov [longname_sec2], eax |
1932 | pop eax |
1932 | pop eax |
1933 | push ecx |
1933 | push ecx |
1934 | mov ecx, [eax+4] |
1934 | mov ecx, [eax+4] |
1935 | inc ecx |
1935 | inc ecx |
1936 | cmp ecx, [SECTORS_PER_CLUSTER] |
1936 | cmp ecx, [SECTORS_PER_CLUSTER] |
1937 | jae fat_notroot_next_cluster |
1937 | jae fat_notroot_next_cluster |
1938 | mov [eax+4], ecx |
1938 | mov [eax+4], ecx |
1939 | jmp @f |
1939 | jmp @f |
1940 | fat_notroot_next_cluster: |
1940 | fat_notroot_next_cluster: |
1941 | push eax |
1941 | push eax |
1942 | mov eax, [eax] |
1942 | mov eax, [eax] |
1943 | call get_FAT |
1943 | call get_FAT |
1944 | mov ecx, eax |
1944 | mov ecx, eax |
1945 | pop eax |
1945 | pop eax |
1946 | cmp [hd_error], 0 |
1946 | cmp [hd_error], 0 |
1947 | jnz fat_notroot_next_err |
1947 | jnz fat_notroot_next_err |
1948 | cmp ecx, [fatRESERVED] |
1948 | cmp ecx, [fatRESERVED] |
1949 | jae fat_notroot_next_err |
1949 | jae fat_notroot_next_err |
1950 | mov [eax], ecx |
1950 | mov [eax], ecx |
1951 | and dword [eax+4], 0 |
1951 | and dword [eax+4], 0 |
1952 | @@: |
1952 | @@: |
1953 | pop ecx |
1953 | pop ecx |
1954 | fat_notroot_first: |
1954 | fat_notroot_first: |
1955 | call fat_get_sector |
1955 | call fat_get_sector |
1956 | push ebx |
1956 | push ebx |
1957 | mov edi, buffer |
1957 | mov edi, buffer |
1958 | mov ebx, edi |
1958 | mov ebx, edi |
1959 | call hd_read |
1959 | call hd_read |
1960 | pop ebx |
1960 | pop ebx |
1961 | cmp [hd_error], 0 |
1961 | cmp [hd_error], 0 |
1962 | jnz @f |
1962 | jnz @f |
1963 | ret ; CF=0 |
1963 | ret ; CF=0 |
1964 | fat_notroot_next_err: |
1964 | fat_notroot_next_err: |
1965 | pop ecx |
1965 | pop ecx |
1966 | @@: |
1966 | @@: |
1967 | stc |
1967 | stc |
1968 | ret |
1968 | ret |
1969 | fat_notroot_begin_write: |
1969 | fat_notroot_begin_write: |
1970 | push eax edi |
1970 | push eax edi |
1971 | call fat_notroot_first |
1971 | call fat_notroot_first |
1972 | pop edi eax |
1972 | pop edi eax |
1973 | ret |
1973 | ret |
1974 | fat_notroot_end_write: |
1974 | fat_notroot_end_write: |
1975 | call fat_get_sector |
1975 | call fat_get_sector |
1976 | push ebx |
1976 | push ebx |
1977 | mov ebx, buffer |
1977 | mov ebx, buffer |
1978 | call hd_write |
1978 | call hd_write |
1979 | pop ebx |
1979 | pop ebx |
1980 | ret |
1980 | ret |
1981 | fat_notroot_next_write: |
1981 | fat_notroot_next_write: |
1982 | cmp edi, buffer+0x200 |
1982 | cmp edi, buffer+0x200 |
1983 | jae @f |
1983 | jae @f |
1984 | ret |
1984 | ret |
1985 | @@: |
1985 | @@: |
1986 | push eax |
1986 | push eax |
1987 | call fat_notroot_end_write |
1987 | call fat_notroot_end_write |
1988 | pop eax |
1988 | pop eax |
1989 | jmp fat_notroot_next_sector |
1989 | jmp fat_notroot_next_sector |
1990 | fat_notroot_extend_dir: |
1990 | fat_notroot_extend_dir: |
1991 | push eax |
1991 | push eax |
1992 | mov eax, [eax] |
1992 | mov eax, [eax] |
1993 | call get_free_FAT |
1993 | call get_free_FAT |
1994 | jnc .found |
1994 | jnc .found |
1995 | pop eax |
1995 | pop eax |
1996 | ret ; CF=1 |
1996 | ret ; CF=1 |
1997 | .found: |
1997 | .found: |
1998 | push edx |
1998 | push edx |
1999 | mov edx, [fatEND] |
1999 | mov edx, [fatEND] |
2000 | call set_FAT |
2000 | call set_FAT |
2001 | mov edx, eax |
2001 | mov edx, eax |
2002 | mov eax, [esp+4] |
2002 | mov eax, [esp+4] |
2003 | mov eax, [eax] |
2003 | mov eax, [eax] |
2004 | push edx |
2004 | push edx |
2005 | call set_FAT |
2005 | call set_FAT |
2006 | pop edx |
2006 | pop edx |
2007 | cmp [hd_error], 0 |
2007 | cmp [hd_error], 0 |
2008 | jz @f |
2008 | jz @f |
2009 | pop edx |
2009 | pop edx |
2010 | pop eax |
2010 | pop eax |
2011 | stc |
2011 | stc |
2012 | ret |
2012 | ret |
2013 | @@: |
2013 | @@: |
2014 | push ecx |
2014 | push ecx |
2015 | or ecx, -1 |
2015 | or ecx, -1 |
2016 | call add_disk_free_space |
2016 | call add_disk_free_space |
2017 | ; zero new cluster |
2017 | ; zero new cluster |
2018 | mov ecx, 512/4 |
2018 | mov ecx, 512/4 |
2019 | mov edi, buffer |
2019 | mov edi, buffer |
2020 | push edi |
2020 | push edi |
2021 | xor eax, eax |
2021 | xor eax, eax |
2022 | rep stosd |
2022 | rep stosd |
2023 | pop edi |
2023 | pop edi |
2024 | pop ecx |
2024 | pop ecx |
2025 | mov eax, [esp+4] |
2025 | mov eax, [esp+4] |
2026 | mov [eax], edx |
2026 | mov [eax], edx |
2027 | and dword [eax+4], 0 |
2027 | and dword [eax+4], 0 |
2028 | pop edx |
2028 | pop edx |
2029 | mov eax, [eax] |
2029 | mov eax, [eax] |
2030 | dec eax |
2030 | dec eax |
2031 | dec eax |
2031 | dec eax |
2032 | push ebx ecx |
2032 | push ebx ecx |
2033 | mov ecx, [SECTORS_PER_CLUSTER] |
2033 | mov ecx, [SECTORS_PER_CLUSTER] |
2034 | imul eax, ecx |
2034 | imul eax, ecx |
2035 | add eax, [DATA_START] |
2035 | add eax, [DATA_START] |
2036 | mov ebx, edi |
2036 | mov ebx, edi |
2037 | @@: |
2037 | @@: |
2038 | call hd_write |
2038 | call hd_write |
2039 | inc eax |
2039 | inc eax |
2040 | loop @b |
2040 | loop @b |
2041 | pop ecx ebx eax |
2041 | pop ecx ebx eax |
2042 | clc |
2042 | clc |
2043 | ret |
2043 | ret |
2044 | 2044 | ||
2045 | fat_get_sector: |
2045 | fat_get_sector: |
2046 | push ecx |
2046 | push ecx |
2047 | mov ecx, [eax] |
2047 | mov ecx, [eax] |
2048 | dec ecx |
2048 | dec ecx |
2049 | dec ecx |
2049 | dec ecx |
2050 | imul ecx, [SECTORS_PER_CLUSTER] |
2050 | imul ecx, [SECTORS_PER_CLUSTER] |
2051 | add ecx, [DATA_START] |
2051 | add ecx, [DATA_START] |
2052 | add ecx, [eax+4] |
2052 | add ecx, [eax+4] |
2053 | mov eax, ecx |
2053 | mov eax, ecx |
2054 | pop ecx |
2054 | pop ecx |
2055 | ret |
2055 | ret |
2056 | 2056 | ||
2057 | ;---------------------------------------------------------------- |
2057 | ;---------------------------------------------------------------- |
2058 | ; |
2058 | ; |
2059 | ; fs_HdRewrite - LFN variant for writing hard disk |
2059 | ; fs_HdRewrite - LFN variant for writing hard disk |
2060 | ; |
2060 | ; |
2061 | ; esi points to filename |
2061 | ; esi points to filename |
2062 | ; ebx ignored (reserved) |
2062 | ; ebx ignored (reserved) |
2063 | ; ecx number of bytes to write, 0+ |
2063 | ; ecx number of bytes to write, 0+ |
2064 | ; edx mem location to data |
2064 | ; edx mem location to data |
2065 | ; |
2065 | ; |
2066 | ; ret ebx = number of written bytes |
2066 | ; ret ebx = number of written bytes |
2067 | ; eax = 0 ok read or other = errormsg |
2067 | ; eax = 0 ok read or other = errormsg |
2068 | ; |
2068 | ; |
2069 | ;-------------------------------------------------------------- |
2069 | ;-------------------------------------------------------------- |
2070 | fshrad: |
2070 | fshrad: |
2071 | mov eax, ERROR_ACCESS_DENIED |
2071 | mov eax, ERROR_ACCESS_DENIED |
2072 | xor ebx, ebx |
2072 | xor ebx, ebx |
2073 | ret |
2073 | ret |
2074 | fshrfs: |
2074 | fshrfs: |
2075 | mov eax, ERROR_UNKNOWN_FS |
2075 | mov eax, ERROR_UNKNOWN_FS |
2076 | xor ebx, ebx |
2076 | xor ebx, ebx |
2077 | ret |
2077 | ret |
2078 | 2078 | ||
2079 | fs_HdCreateFolder: |
2079 | fs_HdCreateFolder: |
2080 | mov al, 1 |
2080 | mov al, 1 |
2081 | jmp fs_HdRewrite.common |
2081 | jmp fs_HdRewrite.common |
2082 | 2082 | ||
2083 | fs_HdRewrite: |
2083 | fs_HdRewrite: |
2084 | xor eax, eax |
2084 | xor eax, eax |
2085 | .common: |
2085 | .common: |
2086 | cmp [fs_type], 1 |
2086 | cmp [fs_type], 1 |
2087 | jz ntfs_HdRewrite |
2087 | jz ntfs_HdRewrite |
2088 | cmp [fs_type], 16 |
2088 | cmp [fs_type], 16 |
2089 | jz @f |
2089 | jz @f |
2090 | cmp [fs_type], 32 |
2090 | cmp [fs_type], 32 |
2091 | jnz fshrfs |
2091 | jnz fshrfs |
2092 | @@: |
2092 | @@: |
2093 | cmp byte [esi], 0 |
2093 | cmp byte [esi], 0 |
2094 | jz fshrad |
2094 | jz fshrad |
2095 | pushad |
2095 | pushad |
2096 | xor ebp, ebp |
2096 | xor ebp, ebp |
2097 | push esi |
2097 | push esi |
2098 | @@: |
2098 | @@: |
2099 | lodsb |
2099 | lodsb |
2100 | test al, al |
2100 | test al, al |
2101 | jz @f |
2101 | jz @f |
2102 | cmp al, '/' |
2102 | cmp al, '/' |
2103 | jnz @b |
2103 | jnz @b |
2104 | lea ebp, [esi-1] |
2104 | lea ebp, [esi-1] |
2105 | jmp @b |
2105 | jmp @b |
2106 | @@: |
2106 | @@: |
2107 | pop esi |
2107 | pop esi |
2108 | test ebp, ebp |
2108 | test ebp, ebp |
2109 | jnz .noroot |
2109 | jnz .noroot |
2110 | mov ebp, [ROOT_CLUSTER] |
2110 | mov ebp, [ROOT_CLUSTER] |
2111 | cmp [fs_type], 32 |
2111 | cmp [fs_type], 32 |
2112 | jz .pushnotroot |
2112 | jz .pushnotroot |
2113 | push fat16_root_extend_dir |
2113 | push fat16_root_extend_dir |
2114 | push fat16_root_end_write |
2114 | push fat16_root_end_write |
2115 | push fat16_root_next_write |
2115 | push fat16_root_next_write |
2116 | push fat16_root_begin_write |
2116 | push fat16_root_begin_write |
2117 | xor ebp, ebp |
2117 | xor ebp, ebp |
2118 | push ebp |
2118 | push ebp |
2119 | push ebp |
2119 | push ebp |
2120 | push fat16_root_first |
2120 | push fat16_root_first |
2121 | push fat16_root_next |
2121 | push fat16_root_next |
2122 | jmp .common1 |
2122 | jmp .common1 |
2123 | .noroot: |
2123 | .noroot: |
2124 | mov eax, ERROR_ACCESS_DENIED |
2124 | mov eax, ERROR_ACCESS_DENIED |
2125 | cmp byte [ebp+1], 0 |
2125 | cmp byte [ebp+1], 0 |
2126 | jz .ret1 |
2126 | jz .ret1 |
2127 | ; check existence |
2127 | ; check existence |
2128 | mov byte [ebp], 0 |
2128 | mov byte [ebp], 0 |
2129 | call hd_find_lfn |
2129 | call hd_find_lfn |
2130 | mov byte [ebp], '/' |
2130 | mov byte [ebp], '/' |
2131 | lea esi, [ebp+1] |
2131 | lea esi, [ebp+1] |
2132 | jnc @f |
2132 | jnc @f |
2133 | mov eax, ERROR_FILE_NOT_FOUND |
2133 | mov eax, ERROR_FILE_NOT_FOUND |
2134 | .ret1: |
2134 | .ret1: |
2135 | mov [esp+28], eax |
2135 | mov [esp+28], eax |
2136 | popad |
2136 | popad |
2137 | xor ebx, ebx |
2137 | xor ebx, ebx |
2138 | ret |
2138 | ret |
2139 | @@: |
2139 | @@: |
2140 | test byte [edi+11], 0x10 ; must be directory |
2140 | test byte [edi+11], 0x10 ; must be directory |
2141 | mov eax, ERROR_ACCESS_DENIED |
2141 | mov eax, ERROR_ACCESS_DENIED |
2142 | jz .ret1 |
2142 | jz .ret1 |
2143 | mov ebp, [edi+20-2] |
2143 | mov ebp, [edi+20-2] |
2144 | mov bp, [edi+26] ; ebp=cluster |
2144 | mov bp, [edi+26] ; ebp=cluster |
2145 | mov eax, ERROR_FAT_TABLE |
2145 | mov eax, ERROR_FAT_TABLE |
2146 | cmp ebp, 2 |
2146 | cmp ebp, 2 |
2147 | jb .ret1 |
2147 | jb .ret1 |
2148 | .pushnotroot: |
2148 | .pushnotroot: |
2149 | push fat_notroot_extend_dir |
2149 | push fat_notroot_extend_dir |
2150 | push fat_notroot_end_write |
2150 | push fat_notroot_end_write |
2151 | push fat_notroot_next_write |
2151 | push fat_notroot_next_write |
2152 | push fat_notroot_begin_write |
2152 | push fat_notroot_begin_write |
2153 | push 0 |
2153 | push 0 |
2154 | push ebp |
2154 | push ebp |
2155 | push fat_notroot_first |
2155 | push fat_notroot_first |
2156 | push fat_notroot_next |
2156 | push fat_notroot_next |
2157 | .common1: |
2157 | .common1: |
2158 | call fat_find_lfn |
2158 | call fat_find_lfn |
2159 | jc .notfound |
2159 | jc .notfound |
2160 | ; found |
2160 | ; found |
2161 | test byte [edi+11], 10h |
2161 | test byte [edi+11], 10h |
2162 | jz .exists_file |
2162 | jz .exists_file |
2163 | ; found directory; if we are creating directory, return OK, |
2163 | ; found directory; if we are creating directory, return OK, |
2164 | ; if we are creating file, say "access denied" |
2164 | ; if we are creating file, say "access denied" |
2165 | add esp, 32 |
2165 | add esp, 32 |
2166 | popad |
2166 | popad |
2167 | test al, al |
2167 | test al, al |
2168 | mov eax, ERROR_ACCESS_DENIED |
2168 | mov eax, ERROR_ACCESS_DENIED |
2169 | jz @f |
2169 | jz @f |
2170 | mov al, 0 |
2170 | mov al, 0 |
2171 | @@: |
2171 | @@: |
2172 | xor ebx, ebx |
2172 | xor ebx, ebx |
2173 | ret |
2173 | ret |
2174 | .exists_file: |
2174 | .exists_file: |
2175 | ; found file; if we are creating directory, return "access denied", |
2175 | ; found file; if we are creating directory, return "access denied", |
2176 | ; if we are creating file, delete existing file and continue |
2176 | ; if we are creating file, delete existing file and continue |
2177 | cmp byte [esp+32+28], 0 |
2177 | cmp byte [esp+32+28], 0 |
2178 | jz @f |
2178 | jz @f |
2179 | add esp, 32 |
2179 | add esp, 32 |
2180 | popad |
2180 | popad |
2181 | mov eax, ERROR_ACCESS_DENIED |
2181 | mov eax, ERROR_ACCESS_DENIED |
2182 | xor ebx, ebx |
2182 | xor ebx, ebx |
2183 | ret |
2183 | ret |
2184 | @@: |
2184 | @@: |
2185 | ; delete FAT chain |
2185 | ; delete FAT chain |
2186 | push edi |
2186 | push edi |
2187 | xor eax, eax |
2187 | xor eax, eax |
2188 | mov dword [edi+28], eax ; zero size |
2188 | mov dword [edi+28], eax ; zero size |
2189 | xor ecx, ecx |
2189 | xor ecx, ecx |
2190 | mov eax, [edi+20-2] |
2190 | mov eax, [edi+20-2] |
2191 | mov ax, [edi+26] |
2191 | mov ax, [edi+26] |
2192 | mov word [edi+20], cx |
2192 | mov word [edi+20], cx |
2193 | mov word [edi+26], cx |
2193 | mov word [edi+26], cx |
2194 | test eax, eax |
2194 | test eax, eax |
2195 | jz .done1 |
2195 | jz .done1 |
2196 | @@: |
2196 | @@: |
2197 | cmp eax, [fatRESERVED] |
2197 | cmp eax, [fatRESERVED] |
2198 | jae .done1 |
2198 | jae .done1 |
2199 | push edx |
2199 | push edx |
2200 | xor edx, edx |
2200 | xor edx, edx |
2201 | call set_FAT |
2201 | call set_FAT |
2202 | mov eax, edx |
2202 | mov eax, edx |
2203 | pop edx |
2203 | pop edx |
2204 | inc ecx |
2204 | inc ecx |
2205 | jmp @b |
2205 | jmp @b |
2206 | .done1: |
2206 | .done1: |
2207 | pop edi |
2207 | pop edi |
2208 | call get_time_for_file |
2208 | call get_time_for_file |
2209 | mov [edi+22], ax |
2209 | mov [edi+22], ax |
2210 | call get_date_for_file |
2210 | call get_date_for_file |
2211 | mov [edi+24], ax |
2211 | mov [edi+24], ax |
2212 | mov [edi+18], ax |
2212 | mov [edi+18], ax |
2213 | or byte [edi+11], 20h ; set 'archive' attribute |
2213 | or byte [edi+11], 20h ; set 'archive' attribute |
2214 | jmp .doit |
2214 | jmp .doit |
2215 | .notfound: |
2215 | .notfound: |
2216 | ; file is not found; generate short name |
2216 | ; file is not found; generate short name |
2217 | call fat_name_is_legal |
2217 | call fat_name_is_legal |
2218 | jc @f |
2218 | jc @f |
2219 | add esp, 32 |
2219 | add esp, 32 |
2220 | popad |
2220 | popad |
2221 | mov eax, ERROR_FILE_NOT_FOUND |
2221 | mov eax, ERROR_FILE_NOT_FOUND |
2222 | xor ebx, ebx |
2222 | xor ebx, ebx |
2223 | ret |
2223 | ret |
2224 | @@: |
2224 | @@: |
2225 | sub esp, 12 |
2225 | sub esp, 12 |
2226 | mov edi, esp |
2226 | mov edi, esp |
2227 | call fat_gen_short_name |
2227 | call fat_gen_short_name |
2228 | .test_short_name_loop: |
2228 | .test_short_name_loop: |
2229 | push esi edi ecx |
2229 | push esi edi ecx |
2230 | mov esi, edi |
2230 | mov esi, edi |
2231 | lea eax, [esp+12+12+8] |
2231 | lea eax, [esp+12+12+8] |
2232 | mov [eax], ebp |
2232 | mov [eax], ebp |
2233 | and dword [eax+4], 0 |
2233 | and dword [eax+4], 0 |
2234 | call dword [eax-4] |
2234 | call dword [eax-4] |
2235 | jc .found |
2235 | jc .found |
2236 | .test_short_name_entry: |
2236 | .test_short_name_entry: |
2237 | cmp byte [edi+11], 0xF |
2237 | cmp byte [edi+11], 0xF |
2238 | jz .test_short_name_cont |
2238 | jz .test_short_name_cont |
2239 | mov ecx, 11 |
2239 | mov ecx, 11 |
2240 | push esi edi |
2240 | push esi edi |
2241 | repz cmpsb |
2241 | repz cmpsb |
2242 | pop edi esi |
2242 | pop edi esi |
2243 | jz .short_name_found |
2243 | jz .short_name_found |
2244 | .test_short_name_cont: |
2244 | .test_short_name_cont: |
2245 | lea eax, [esp+12+12+8] |
2245 | lea eax, [esp+12+12+8] |
2246 | call dword [eax-8] |
2246 | call dword [eax-8] |
2247 | jnc .test_short_name_entry |
2247 | jnc .test_short_name_entry |
2248 | jmp .found |
2248 | jmp .found |
2249 | .short_name_found: |
2249 | .short_name_found: |
2250 | pop ecx edi esi |
2250 | pop ecx edi esi |
2251 | call fat_next_short_name |
2251 | call fat_next_short_name |
2252 | jnc .test_short_name_loop |
2252 | jnc .test_short_name_loop |
2253 | .disk_full: |
2253 | .disk_full: |
2254 | add esp, 12+32 |
2254 | add esp, 12+32 |
2255 | popa |
2255 | popa |
2256 | mov eax, ERROR_DISK_FULL |
2256 | mov eax, ERROR_DISK_FULL |
2257 | xor ebx, ebx |
2257 | xor ebx, ebx |
2258 | ret |
2258 | ret |
2259 | .found: |
2259 | .found: |
2260 | pop ecx edi esi |
2260 | pop ecx edi esi |
2261 | ; now find space in directory |
2261 | ; now find space in directory |
2262 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
2262 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
2263 | mov al, '~' |
2263 | mov al, '~' |
2264 | push ecx edi |
2264 | push ecx edi |
2265 | mov ecx, 8 |
2265 | mov ecx, 8 |
2266 | repnz scasb |
2266 | repnz scasb |
2267 | push 1 |
2267 | push 1 |
2268 | pop eax ; 1 entry |
2268 | pop eax ; 1 entry |
2269 | jnz .notilde |
2269 | jnz .notilde |
2270 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
2270 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
2271 | xor eax, eax |
2271 | xor eax, eax |
2272 | @@: |
2272 | @@: |
2273 | cmp byte [esi], 0 |
2273 | cmp byte [esi], 0 |
2274 | jz @f |
2274 | jz @f |
2275 | inc esi |
2275 | inc esi |
2276 | inc eax |
2276 | inc eax |
2277 | jmp @b |
2277 | jmp @b |
2278 | @@: |
2278 | @@: |
2279 | sub esi, eax |
2279 | sub esi, eax |
2280 | add eax, 12+13 |
2280 | add eax, 12+13 |
2281 | mov ecx, 13 |
2281 | mov ecx, 13 |
2282 | push edx |
2282 | push edx |
2283 | cdq |
2283 | cdq |
2284 | div ecx |
2284 | div ecx |
2285 | pop edx |
2285 | pop edx |
2286 | .notilde: |
2286 | .notilde: |
2287 | push -1 |
2287 | push -1 |
2288 | push -1 |
2288 | push -1 |
2289 | push -1 |
2289 | push -1 |
2290 | ; find |
2290 | ; find |
2291 | xor ecx, ecx |
2291 | xor ecx, ecx |
2292 | push eax |
2292 | push eax |
2293 | lea eax, [esp+16+8+12+8] |
2293 | lea eax, [esp+16+8+12+8] |
2294 | mov [eax], ebp |
2294 | mov [eax], ebp |
2295 | and dword [eax+4], 0 |
2295 | and dword [eax+4], 0 |
2296 | call dword [eax-4] |
2296 | call dword [eax-4] |
2297 | pop eax |
2297 | pop eax |
2298 | jnc .scan_dir |
2298 | jnc .scan_dir |
2299 | .fsfrfe3: |
2299 | .fsfrfe3: |
2300 | add esp, 12+8+12+32 |
2300 | add esp, 12+8+12+32 |
2301 | popad |
2301 | popad |
2302 | mov eax, 11 |
2302 | mov eax, 11 |
2303 | xor ebx, ebx |
2303 | xor ebx, ebx |
2304 | ret |
2304 | ret |
2305 | .scan_dir: |
2305 | .scan_dir: |
2306 | cmp byte [edi], 0 |
2306 | cmp byte [edi], 0 |
2307 | jz .free |
2307 | jz .free |
2308 | cmp byte [edi], 0xE5 |
2308 | cmp byte [edi], 0xE5 |
2309 | jz .free |
2309 | jz .free |
2310 | xor ecx, ecx |
2310 | xor ecx, ecx |
2311 | .scan_cont: |
2311 | .scan_cont: |
2312 | push eax |
2312 | push eax |
2313 | lea eax, [esp+16+8+12+8] |
2313 | lea eax, [esp+16+8+12+8] |
2314 | call dword [eax-8] |
2314 | call dword [eax-8] |
2315 | pop eax |
2315 | pop eax |
2316 | jnc .scan_dir |
2316 | jnc .scan_dir |
2317 | cmp [hd_error], 0 |
2317 | cmp [hd_error], 0 |
2318 | jnz .fsfrfe3 |
2318 | jnz .fsfrfe3 |
2319 | push eax |
2319 | push eax |
2320 | lea eax, [esp+16+8+12+8] |
2320 | lea eax, [esp+16+8+12+8] |
2321 | call dword [eax+20] ; extend directory |
2321 | call dword [eax+20] ; extend directory |
2322 | pop eax |
2322 | pop eax |
2323 | jnc .scan_dir |
2323 | jnc .scan_dir |
2324 | add esp, 12+8+12+32 |
2324 | add esp, 12+8+12+32 |
2325 | popad |
2325 | popad |
2326 | mov eax, ERROR_DISK_FULL |
2326 | mov eax, ERROR_DISK_FULL |
2327 | xor ebx, ebx |
2327 | xor ebx, ebx |
2328 | ret |
2328 | ret |
2329 | .free: |
2329 | .free: |
2330 | test ecx, ecx |
2330 | test ecx, ecx |
2331 | jnz @f |
2331 | jnz @f |
2332 | mov [esp], edi |
2332 | mov [esp], edi |
2333 | mov ecx, [esp+12+8+12+8] |
2333 | mov ecx, [esp+12+8+12+8] |
2334 | mov [esp+4], ecx |
2334 | mov [esp+4], ecx |
2335 | mov ecx, [esp+12+8+12+12] |
2335 | mov ecx, [esp+12+8+12+12] |
2336 | mov [esp+8], ecx |
2336 | mov [esp+8], ecx |
2337 | xor ecx, ecx |
2337 | xor ecx, ecx |
2338 | @@: |
2338 | @@: |
2339 | inc ecx |
2339 | inc ecx |
2340 | cmp ecx, eax |
2340 | cmp ecx, eax |
2341 | jb .scan_cont |
2341 | jb .scan_cont |
2342 | ; found! |
2342 | ; found! |
2343 | ; calculate name checksum |
2343 | ; calculate name checksum |
2344 | push esi ecx |
2344 | push esi ecx |
2345 | mov esi, [esp+8+12] |
2345 | mov esi, [esp+8+12] |
2346 | mov ecx, 11 |
2346 | mov ecx, 11 |
2347 | xor eax, eax |
2347 | xor eax, eax |
2348 | @@: |
2348 | @@: |
2349 | ror al, 1 |
2349 | ror al, 1 |
2350 | add al, [esi] |
2350 | add al, [esi] |
2351 | inc esi |
2351 | inc esi |
2352 | loop @b |
2352 | loop @b |
2353 | pop ecx esi |
2353 | pop ecx esi |
2354 | pop edi |
2354 | pop edi |
2355 | pop dword [esp+8+12+12] |
2355 | pop dword [esp+8+12+12] |
2356 | pop dword [esp+8+12+12] |
2356 | pop dword [esp+8+12+12] |
2357 | ; edi points to first entry in free chunk |
2357 | ; edi points to first entry in free chunk |
2358 | dec ecx |
2358 | dec ecx |
2359 | jz .nolfn |
2359 | jz .nolfn |
2360 | push esi |
2360 | push esi |
2361 | push eax |
2361 | push eax |
2362 | lea eax, [esp+8+8+12+8] |
2362 | lea eax, [esp+8+8+12+8] |
2363 | call dword [eax+8] ; begin write |
2363 | call dword [eax+8] ; begin write |
2364 | mov al, 40h |
2364 | mov al, 40h |
2365 | .writelfn: |
2365 | .writelfn: |
2366 | or al, cl |
2366 | or al, cl |
2367 | mov esi, [esp+4] |
2367 | mov esi, [esp+4] |
2368 | push ecx |
2368 | push ecx |
2369 | dec ecx |
2369 | dec ecx |
2370 | imul ecx, 13 |
2370 | imul ecx, 13 |
2371 | add esi, ecx |
2371 | add esi, ecx |
2372 | stosb |
2372 | stosb |
2373 | mov cl, 5 |
2373 | mov cl, 5 |
2374 | call fs_RamdiskRewrite.read_symbols |
2374 | call fs_RamdiskRewrite.read_symbols |
2375 | mov ax, 0xF |
2375 | mov ax, 0xF |
2376 | stosw |
2376 | stosw |
2377 | mov al, [esp+4] |
2377 | mov al, [esp+4] |
2378 | stosb |
2378 | stosb |
2379 | mov cl, 6 |
2379 | mov cl, 6 |
2380 | call fs_RamdiskRewrite.read_symbols |
2380 | call fs_RamdiskRewrite.read_symbols |
2381 | xor eax, eax |
2381 | xor eax, eax |
2382 | stosw |
2382 | stosw |
2383 | mov cl, 2 |
2383 | mov cl, 2 |
2384 | call fs_RamdiskRewrite.read_symbols |
2384 | call fs_RamdiskRewrite.read_symbols |
2385 | pop ecx |
2385 | pop ecx |
2386 | lea eax, [esp+8+8+12+8] |
2386 | lea eax, [esp+8+8+12+8] |
2387 | call dword [eax+12] ; next write |
2387 | call dword [eax+12] ; next write |
2388 | xor eax, eax |
2388 | xor eax, eax |
2389 | loop .writelfn |
2389 | loop .writelfn |
2390 | pop eax |
2390 | pop eax |
2391 | pop esi |
2391 | pop esi |
2392 | ; lea eax, [esp+8+12+8] |
2392 | ; lea eax, [esp+8+12+8] |
2393 | ; call dword [eax+16] ; end write |
2393 | ; call dword [eax+16] ; end write |
2394 | .nolfn: |
2394 | .nolfn: |
2395 | xchg esi, [esp] |
2395 | xchg esi, [esp] |
2396 | mov ecx, 11 |
2396 | mov ecx, 11 |
2397 | rep movsb |
2397 | rep movsb |
2398 | mov word [edi], 20h ; attributes |
2398 | mov word [edi], 20h ; attributes |
2399 | sub edi, 11 |
2399 | sub edi, 11 |
2400 | pop esi ecx |
2400 | pop esi ecx |
2401 | add esp, 12 |
2401 | add esp, 12 |
2402 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
2402 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
2403 | call get_time_for_file |
2403 | call get_time_for_file |
2404 | mov [edi+14], ax ; creation time |
2404 | mov [edi+14], ax ; creation time |
2405 | mov [edi+22], ax ; last write time |
2405 | mov [edi+22], ax ; last write time |
2406 | call get_date_for_file |
2406 | call get_date_for_file |
2407 | mov [edi+16], ax ; creation date |
2407 | mov [edi+16], ax ; creation date |
2408 | mov [edi+24], ax ; last write date |
2408 | mov [edi+24], ax ; last write date |
2409 | mov [edi+18], ax ; last access date |
2409 | mov [edi+18], ax ; last access date |
2410 | xor ecx, ecx |
2410 | xor ecx, ecx |
2411 | mov word [edi+20], cx ; high word of cluster |
2411 | mov word [edi+20], cx ; high word of cluster |
2412 | mov word [edi+26], cx ; low word of cluster - to be filled |
2412 | mov word [edi+26], cx ; low word of cluster - to be filled |
2413 | mov dword [edi+28], ecx ; file size - to be filled |
2413 | mov dword [edi+28], ecx ; file size - to be filled |
2414 | cmp byte [esp+32+28], cl |
2414 | cmp byte [esp+32+28], cl |
2415 | jz .doit |
2415 | jz .doit |
2416 | ; create directory |
2416 | ; create directory |
2417 | mov byte [edi+11], 10h ; attributes: folder |
2417 | mov byte [edi+11], 10h ; attributes: folder |
2418 | mov edx, edi |
2418 | mov edx, edi |
2419 | lea eax, [esp+8] |
2419 | lea eax, [esp+8] |
2420 | call dword [eax+16] ; flush directory |
2420 | call dword [eax+16] ; flush directory |
2421 | push ecx |
2421 | push ecx |
2422 | mov ecx, [SECTORS_PER_CLUSTER] |
2422 | mov ecx, [SECTORS_PER_CLUSTER] |
2423 | shl ecx, 9 |
2423 | shl ecx, 9 |
2424 | jmp .doit2 |
2424 | jmp .doit2 |
2425 | .doit: |
2425 | .doit: |
2426 | lea eax, [esp+8] |
2426 | lea eax, [esp+8] |
2427 | call dword [eax+16] ; flush directory |
2427 | call dword [eax+16] ; flush directory |
2428 | push ecx |
2428 | push ecx |
2429 | mov ecx, [esp+4+32+24] |
2429 | mov ecx, [esp+4+32+24] |
2430 | .doit2: |
2430 | .doit2: |
2431 | push ecx |
2431 | push ecx |
2432 | push edi |
2432 | push edi |
2433 | mov esi, edx |
2433 | mov esi, edx |
2434 | test ecx, ecx |
2434 | test ecx, ecx |
2435 | jz .done |
2435 | jz .done |
2436 | mov eax, 2 |
2436 | mov eax, 2 |
2437 | call get_free_FAT |
2437 | call get_free_FAT |
2438 | jc .diskfull |
2438 | jc .diskfull |
2439 | push eax |
2439 | push eax |
2440 | mov [edi+26], ax |
2440 | mov [edi+26], ax |
2441 | shr eax, 16 |
2441 | shr eax, 16 |
2442 | mov [edi+20], ax |
2442 | mov [edi+20], ax |
2443 | lea eax, [esp+16+8] |
2443 | lea eax, [esp+16+8] |
2444 | call dword [eax+16] ; flush directory |
2444 | call dword [eax+16] ; flush directory |
2445 | pop eax |
2445 | pop eax |
2446 | push edx |
2446 | push edx |
2447 | mov edx, [fatEND] |
2447 | mov edx, [fatEND] |
2448 | call set_FAT |
2448 | call set_FAT |
2449 | pop edx |
2449 | pop edx |
2450 | .write_cluster: |
2450 | .write_cluster: |
2451 | push eax |
2451 | push eax |
2452 | dec eax |
2452 | dec eax |
2453 | dec eax |
2453 | dec eax |
2454 | mov ebp, [SECTORS_PER_CLUSTER] |
2454 | mov ebp, [SECTORS_PER_CLUSTER] |
2455 | imul eax, ebp |
2455 | imul eax, ebp |
2456 | add eax, [DATA_START] |
2456 | add eax, [DATA_START] |
2457 | ; write data |
2457 | ; write data |
2458 | .write_sector: |
2458 | .write_sector: |
2459 | cmp byte [esp+16+32+28], 0 |
2459 | cmp byte [esp+16+32+28], 0 |
2460 | jnz .writedir |
2460 | jnz .writedir |
2461 | mov ecx, 512 |
2461 | mov ecx, 512 |
2462 | cmp dword [esp+8], ecx |
2462 | cmp dword [esp+8], ecx |
2463 | jb .writeshort |
2463 | jb .writeshort |
2464 | ; we can write directly from given buffer |
2464 | ; we can write directly from given buffer |
2465 | mov ebx, esi |
2465 | mov ebx, esi |
2466 | add esi, ecx |
2466 | add esi, ecx |
2467 | jmp .writecommon |
2467 | jmp .writecommon |
2468 | .writeshort: |
2468 | .writeshort: |
2469 | mov ecx, [esp+8] |
2469 | mov ecx, [esp+8] |
2470 | push ecx |
2470 | push ecx |
2471 | mov edi, buffer |
2471 | mov edi, buffer |
2472 | mov ebx, edi |
2472 | mov ebx, edi |
2473 | rep movsb |
2473 | rep movsb |
2474 | .writedircont: |
2474 | .writedircont: |
2475 | mov ecx, buffer+0x200 |
2475 | mov ecx, buffer+0x200 |
2476 | sub ecx, edi |
2476 | sub ecx, edi |
2477 | push eax |
2477 | push eax |
2478 | xor eax, eax |
2478 | xor eax, eax |
2479 | rep stosb |
2479 | rep stosb |
2480 | pop eax |
2480 | pop eax |
2481 | pop ecx |
2481 | pop ecx |
2482 | .writecommon: |
2482 | .writecommon: |
2483 | call hd_write |
2483 | call hd_write |
2484 | cmp [hd_error], 0 |
2484 | cmp [hd_error], 0 |
2485 | jnz .writeerr |
2485 | jnz .writeerr |
2486 | inc eax |
2486 | inc eax |
2487 | sub dword [esp+8], ecx |
2487 | sub dword [esp+8], ecx |
2488 | jz .writedone |
2488 | jz .writedone |
2489 | dec ebp |
2489 | dec ebp |
2490 | jnz .write_sector |
2490 | jnz .write_sector |
2491 | ; allocate new cluster |
2491 | ; allocate new cluster |
2492 | pop eax |
2492 | pop eax |
2493 | mov ecx, eax |
2493 | mov ecx, eax |
2494 | call get_free_FAT |
2494 | call get_free_FAT |
2495 | jc .diskfull |
2495 | jc .diskfull |
2496 | push edx |
2496 | push edx |
2497 | mov edx, [fatEND] |
2497 | mov edx, [fatEND] |
2498 | call set_FAT |
2498 | call set_FAT |
2499 | xchg eax, ecx |
2499 | xchg eax, ecx |
2500 | mov edx, ecx |
2500 | mov edx, ecx |
2501 | call set_FAT |
2501 | call set_FAT |
2502 | pop edx |
2502 | pop edx |
2503 | xchg eax, ecx |
2503 | xchg eax, ecx |
2504 | jmp .write_cluster |
2504 | jmp .write_cluster |
2505 | .diskfull: |
2505 | .diskfull: |
2506 | mov eax, ERROR_DISK_FULL |
2506 | mov eax, ERROR_DISK_FULL |
2507 | jmp .ret |
2507 | jmp .ret |
2508 | .writeerr: |
2508 | .writeerr: |
2509 | pop eax |
2509 | pop eax |
2510 | sub esi, ecx |
2510 | sub esi, ecx |
2511 | mov eax, 11 |
2511 | mov eax, 11 |
2512 | jmp .ret |
2512 | jmp .ret |
2513 | .writedone: |
2513 | .writedone: |
2514 | pop eax |
2514 | pop eax |
2515 | .done: |
2515 | .done: |
2516 | xor eax, eax |
2516 | xor eax, eax |
2517 | .ret: |
2517 | .ret: |
2518 | pop edi ecx |
2518 | pop edi ecx |
2519 | mov ebx, esi |
2519 | mov ebx, esi |
2520 | sub ebx, edx |
2520 | sub ebx, edx |
2521 | pop ebp |
2521 | pop ebp |
2522 | mov [esp+32+28], eax |
2522 | mov [esp+32+28], eax |
2523 | lea eax, [esp+8] |
2523 | lea eax, [esp+8] |
2524 | call dword [eax+8] |
2524 | call dword [eax+8] |
2525 | mov [edi+28], ebx |
2525 | mov [edi+28], ebx |
2526 | call dword [eax+16] |
2526 | call dword [eax+16] |
2527 | mov [esp+32+16], ebx |
2527 | mov [esp+32+16], ebx |
2528 | lea eax, [ebx+511] |
2528 | lea eax, [ebx+511] |
2529 | shr eax, 9 |
2529 | shr eax, 9 |
2530 | mov ecx, [SECTORS_PER_CLUSTER] |
2530 | mov ecx, [SECTORS_PER_CLUSTER] |
2531 | lea eax, [eax+ecx-1] |
2531 | lea eax, [eax+ecx-1] |
2532 | xor edx, edx |
2532 | xor edx, edx |
2533 | div ecx |
2533 | div ecx |
2534 | mov ecx, ebp |
2534 | mov ecx, ebp |
2535 | sub ecx, eax |
2535 | sub ecx, eax |
2536 | call add_disk_free_space |
2536 | call add_disk_free_space |
2537 | add esp, 32 |
2537 | add esp, 32 |
2538 | call update_disk |
2538 | call update_disk |
2539 | popad |
2539 | popad |
2540 | ret |
2540 | ret |
2541 | .writedir: |
2541 | .writedir: |
2542 | push 512 |
2542 | push 512 |
2543 | mov edi, buffer |
2543 | mov edi, buffer |
2544 | mov ebx, edi |
2544 | mov ebx, edi |
2545 | mov ecx, [SECTORS_PER_CLUSTER] |
2545 | mov ecx, [SECTORS_PER_CLUSTER] |
2546 | shl ecx, 9 |
2546 | shl ecx, 9 |
2547 | cmp ecx, [esp+12] |
2547 | cmp ecx, [esp+12] |
2548 | jnz .writedircont |
2548 | jnz .writedircont |
2549 | dec dword [esp+16] |
2549 | dec dword [esp+16] |
2550 | push esi |
2550 | push esi |
2551 | mov ecx, 32/4 |
2551 | mov ecx, 32/4 |
2552 | rep movsd |
2552 | rep movsd |
2553 | pop esi |
2553 | pop esi |
2554 | mov dword [edi-32], '. ' |
2554 | mov dword [edi-32], '. ' |
2555 | mov dword [edi-32+4], ' ' |
2555 | mov dword [edi-32+4], ' ' |
2556 | mov dword [edi-32+8], ' ' |
2556 | mov dword [edi-32+8], ' ' |
2557 | mov byte [edi-32+11], 10h |
2557 | mov byte [edi-32+11], 10h |
2558 | push esi |
2558 | push esi |
2559 | mov ecx, 32/4 |
2559 | mov ecx, 32/4 |
2560 | rep movsd |
2560 | rep movsd |
2561 | pop esi |
2561 | pop esi |
2562 | mov dword [edi-32], '.. ' |
2562 | mov dword [edi-32], '.. ' |
2563 | mov dword [edi-32+4], ' ' |
2563 | mov dword [edi-32+4], ' ' |
2564 | mov dword [edi-32+8], ' ' |
2564 | mov dword [edi-32+8], ' ' |
2565 | mov byte [edi-32+11], 10h |
2565 | mov byte [edi-32+11], 10h |
2566 | mov ecx, [esp+20+8] |
2566 | mov ecx, [esp+20+8] |
2567 | cmp ecx, [ROOT_CLUSTER] |
2567 | cmp ecx, [ROOT_CLUSTER] |
2568 | jnz @f |
2568 | jnz @f |
2569 | xor ecx, ecx |
2569 | xor ecx, ecx |
2570 | @@: |
2570 | @@: |
2571 | mov word [edi-32+26], cx |
2571 | mov word [edi-32+26], cx |
2572 | shr ecx, 16 |
2572 | shr ecx, 16 |
2573 | mov [edi-32+20], cx |
2573 | mov [edi-32+20], cx |
2574 | jmp .writedircont |
2574 | jmp .writedircont |
2575 | 2575 | ||
2576 | ;---------------------------------------------------------------- |
2576 | ;---------------------------------------------------------------- |
2577 | ; |
2577 | ; |
2578 | ; fs_HdWrite - LFN variant for writing to hard disk |
2578 | ; fs_HdWrite - LFN variant for writing to hard disk |
2579 | ; |
2579 | ; |
2580 | ; esi points to filename |
2580 | ; esi points to filename |
2581 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
2581 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
2582 | ; may be ebx=0 - start from first byte |
2582 | ; may be ebx=0 - start from first byte |
2583 | ; ecx number of bytes to write, 0+ |
2583 | ; ecx number of bytes to write, 0+ |
2584 | ; edx mem location to data |
2584 | ; edx mem location to data |
2585 | ; |
2585 | ; |
2586 | ; ret ebx = bytes written (maybe 0) |
2586 | ; ret ebx = bytes written (maybe 0) |
2587 | ; eax = 0 ok write or other = errormsg |
2587 | ; eax = 0 ok write or other = errormsg |
2588 | ; |
2588 | ; |
2589 | ;-------------------------------------------------------------- |
2589 | ;-------------------------------------------------------------- |
2590 | fs_HdWrite.access_denied: |
2590 | fs_HdWrite.access_denied: |
2591 | push ERROR_ACCESS_DENIED |
2591 | push ERROR_ACCESS_DENIED |
2592 | fs_HdWrite.ret0: |
2592 | fs_HdWrite.ret0: |
2593 | pop eax |
2593 | pop eax |
2594 | xor ebx, ebx |
2594 | xor ebx, ebx |
2595 | ret |
2595 | ret |
2596 | 2596 | ||
2597 | fs_HdWrite.ret11: |
2597 | fs_HdWrite.ret11: |
2598 | push 11 |
2598 | push 11 |
2599 | jmp fs_HdWrite.ret0 |
2599 | jmp fs_HdWrite.ret0 |
2600 | 2600 | ||
2601 | fs_HdWrite: |
2601 | fs_HdWrite: |
2602 | cmp [fs_type], 1 |
2602 | cmp [fs_type], 1 |
2603 | jz ntfs_HdWrite |
2603 | jz ntfs_HdWrite |
2604 | cmp [fs_type], 16 |
2604 | cmp [fs_type], 16 |
2605 | jz @f |
2605 | jz @f |
2606 | cmp [fs_type], 32 |
2606 | cmp [fs_type], 32 |
2607 | jz @f |
2607 | jz @f |
2608 | push ERROR_UNKNOWN_FS |
2608 | push ERROR_UNKNOWN_FS |
2609 | jmp .ret0 |
2609 | jmp .ret0 |
2610 | @@: |
2610 | @@: |
2611 | cmp byte [esi], 0 |
2611 | cmp byte [esi], 0 |
2612 | jz .access_denied |
2612 | jz .access_denied |
2613 | pushad |
2613 | pushad |
2614 | call hd_find_lfn |
2614 | call hd_find_lfn |
2615 | pushfd |
2615 | pushfd |
2616 | cmp [hd_error], 0 |
2616 | cmp [hd_error], 0 |
2617 | jz @f |
2617 | jz @f |
2618 | popfd |
2618 | popfd |
2619 | popad |
2619 | popad |
2620 | push 11 |
2620 | push 11 |
2621 | jmp .ret0 |
2621 | jmp .ret0 |
2622 | @@: |
2622 | @@: |
2623 | popfd |
2623 | popfd |
2624 | jnc .found |
2624 | jnc .found |
2625 | popad |
2625 | popad |
2626 | push ERROR_FILE_NOT_FOUND |
2626 | push ERROR_FILE_NOT_FOUND |
2627 | jmp .ret0 |
2627 | jmp .ret0 |
2628 | .found: |
2628 | .found: |
2629 | ; FAT does not support files larger than 4GB |
2629 | ; FAT does not support files larger than 4GB |
2630 | test ebx, ebx |
2630 | test ebx, ebx |
2631 | jz .l1 |
2631 | jz .l1 |
2632 | cmp dword [ebx+4], 0 |
2632 | cmp dword [ebx+4], 0 |
2633 | jz @f |
2633 | jz @f |
2634 | .eof: |
2634 | .eof: |
2635 | popad |
2635 | popad |
2636 | push ERROR_END_OF_FILE |
2636 | push ERROR_END_OF_FILE |
2637 | jmp .ret0 |
2637 | jmp .ret0 |
2638 | @@: |
2638 | @@: |
2639 | mov ebx, [ebx] |
2639 | mov ebx, [ebx] |
2640 | .l1: |
2640 | .l1: |
2641 | ; now edi points to direntry, ebx=start byte to write, |
2641 | ; now edi points to direntry, ebx=start byte to write, |
2642 | ; ecx=number of bytes to write, edx=data pointer |
2642 | ; ecx=number of bytes to write, edx=data pointer |
2643 | 2643 | ||
2644 | ; extend file if needed |
2644 | ; extend file if needed |
2645 | add ecx, ebx |
2645 | add ecx, ebx |
2646 | jc .eof ; FAT does not support files larger than 4GB |
2646 | jc .eof ; FAT does not support files larger than 4GB |
2647 | push eax ; save directory sector |
2647 | push eax ; save directory sector |
2648 | push 0 ; return value=0 |
2648 | push 0 ; return value=0 |
2649 | 2649 | ||
2650 | call get_time_for_file |
2650 | call get_time_for_file |
2651 | mov [edi+22], ax ; last write time |
2651 | mov [edi+22], ax ; last write time |
2652 | call get_date_for_file |
2652 | call get_date_for_file |
2653 | mov [edi+24], ax ; last write date |
2653 | mov [edi+24], ax ; last write date |
2654 | mov [edi+18], ax ; last access date |
2654 | mov [edi+18], ax ; last access date |
2655 | 2655 | ||
2656 | push dword [edi+28] ; save current file size |
2656 | push dword [edi+28] ; save current file size |
2657 | cmp ecx, [edi+28] |
2657 | cmp ecx, [edi+28] |
2658 | jbe .length_ok |
2658 | jbe .length_ok |
2659 | cmp ecx, ebx |
2659 | cmp ecx, ebx |
2660 | jz .length_ok |
2660 | jz .length_ok |
2661 | call hd_extend_file |
2661 | call hd_extend_file |
2662 | jnc .length_ok |
2662 | jnc .length_ok |
2663 | mov [esp+4], eax |
2663 | mov [esp+4], eax |
2664 | ; hd_extend_file can return three error codes: FAT table error, device error or disk full. |
2664 | ; hd_extend_file can return three error codes: FAT table error, device error or disk full. |
2665 | ; First two cases are fatal errors, in third case we may write some data |
2665 | ; First two cases are fatal errors, in third case we may write some data |
2666 | cmp al, ERROR_DISK_FULL |
2666 | cmp al, ERROR_DISK_FULL |
2667 | jz .disk_full |
2667 | jz .disk_full |
2668 | pop eax |
2668 | pop eax |
2669 | pop eax |
2669 | pop eax |
2670 | mov [esp+4+28], eax |
2670 | mov [esp+4+28], eax |
2671 | pop eax |
2671 | pop eax |
2672 | popad |
2672 | popad |
2673 | xor ebx, ebx |
2673 | xor ebx, ebx |
2674 | ret |
2674 | ret |
2675 | .disk_full: |
2675 | .disk_full: |
2676 | ; correct number of bytes to write |
2676 | ; correct number of bytes to write |
2677 | mov ecx, [edi+28] |
2677 | mov ecx, [edi+28] |
2678 | cmp ecx, ebx |
2678 | cmp ecx, ebx |
2679 | ja .length_ok |
2679 | ja .length_ok |
2680 | .ret: |
2680 | .ret: |
2681 | call update_disk |
2681 | call update_disk |
2682 | cmp [hd_error], 0 |
2682 | cmp [hd_error], 0 |
2683 | jz @f |
2683 | jz @f |
2684 | mov byte [esp+4], 11 |
2684 | mov byte [esp+4], 11 |
2685 | @@: |
2685 | @@: |
2686 | pop eax |
2686 | pop eax |
2687 | pop eax |
2687 | pop eax |
2688 | mov [esp+4+28], eax ; eax=return value |
2688 | mov [esp+4+28], eax ; eax=return value |
2689 | pop eax |
2689 | pop eax |
2690 | sub edx, [esp+20] |
2690 | sub edx, [esp+20] |
2691 | mov [esp+16], edx ; ebx=number of written bytes |
2691 | mov [esp+16], edx ; ebx=number of written bytes |
2692 | popad |
2692 | popad |
2693 | ret |
2693 | ret |
2694 | .length_ok: |
2694 | .length_ok: |
2695 | mov esi, [edi+28] |
2695 | mov esi, [edi+28] |
2696 | mov eax, [edi+20-2] |
2696 | mov eax, [edi+20-2] |
2697 | mov ax, [edi+26] |
2697 | mov ax, [edi+26] |
2698 | mov edi, eax ; edi=current cluster |
2698 | mov edi, eax ; edi=current cluster |
2699 | xor ebp, ebp ; ebp=current sector in cluster |
2699 | xor ebp, ebp ; ebp=current sector in cluster |
2700 | ; save directory |
2700 | ; save directory |
2701 | mov eax, [esp+8] |
2701 | mov eax, [esp+8] |
2702 | push ebx |
2702 | push ebx |
2703 | mov ebx, buffer |
2703 | mov ebx, buffer |
2704 | call hd_write |
2704 | call hd_write |
2705 | pop ebx |
2705 | pop ebx |
2706 | cmp [hd_error], 0 |
2706 | cmp [hd_error], 0 |
2707 | jz @f |
2707 | jz @f |
2708 | .device_err: |
2708 | .device_err: |
2709 | mov byte [esp+4], 11 |
2709 | mov byte [esp+4], 11 |
2710 | jmp .ret |
2710 | jmp .ret |
2711 | @@: |
2711 | @@: |
2712 | 2712 | ||
2713 | ; now ebx=start pos, ecx=end pos, both lie inside file |
2713 | ; now ebx=start pos, ecx=end pos, both lie inside file |
2714 | sub ecx, ebx |
2714 | sub ecx, ebx |
2715 | jz .ret |
2715 | jz .ret |
2716 | .write_loop: |
2716 | .write_loop: |
2717 | ; skip unmodified sectors |
2717 | ; skip unmodified sectors |
2718 | cmp dword [esp], 0x200 |
2718 | cmp dword [esp], 0x200 |
2719 | jb .modify |
2719 | jb .modify |
2720 | sub ebx, 0x200 |
2720 | sub ebx, 0x200 |
2721 | jae .skip |
2721 | jae .skip |
2722 | add ebx, 0x200 |
2722 | add ebx, 0x200 |
2723 | .modify: |
2723 | .modify: |
2724 | ; get length of data in current sector |
2724 | ; get length of data in current sector |
2725 | push ecx |
2725 | push ecx |
2726 | sub ebx, 0x200 |
2726 | sub ebx, 0x200 |
2727 | jb .hasdata |
2727 | jb .hasdata |
2728 | neg ebx |
2728 | neg ebx |
2729 | xor ecx, ecx |
2729 | xor ecx, ecx |
2730 | jmp @f |
2730 | jmp @f |
2731 | .hasdata: |
2731 | .hasdata: |
2732 | neg ebx |
2732 | neg ebx |
2733 | cmp ecx, ebx |
2733 | cmp ecx, ebx |
2734 | jbe @f |
2734 | jbe @f |
2735 | mov ecx, ebx |
2735 | mov ecx, ebx |
2736 | @@: |
2736 | @@: |
2737 | ; get current sector number |
2737 | ; get current sector number |
2738 | mov eax, edi |
2738 | mov eax, edi |
2739 | dec eax |
2739 | dec eax |
2740 | dec eax |
2740 | dec eax |
2741 | imul eax, [SECTORS_PER_CLUSTER] |
2741 | imul eax, [SECTORS_PER_CLUSTER] |
2742 | add eax, [DATA_START] |
2742 | add eax, [DATA_START] |
2743 | add eax, ebp |
2743 | add eax, ebp |
2744 | ; load sector if needed |
2744 | ; load sector if needed |
2745 | cmp dword [esp+4], 0 ; we don't need to read uninitialized data |
2745 | cmp dword [esp+4], 0 ; we don't need to read uninitialized data |
2746 | jz .noread |
2746 | jz .noread |
2747 | cmp ecx, 0x200 ; we don't need to read sector if it is fully rewritten |
2747 | cmp ecx, 0x200 ; we don't need to read sector if it is fully rewritten |
2748 | jz .noread |
2748 | jz .noread |
2749 | cmp ecx, esi ; (same for the last sector) |
2749 | cmp ecx, esi ; (same for the last sector) |
2750 | jz .noread |
2750 | jz .noread |
2751 | push ebx |
2751 | push ebx |
2752 | mov ebx, buffer |
2752 | mov ebx, buffer |
2753 | call hd_read |
2753 | call hd_read |
2754 | pop ebx |
2754 | pop ebx |
2755 | cmp [hd_error], 0 |
2755 | cmp [hd_error], 0 |
2756 | jz @f |
2756 | jz @f |
2757 | .device_err2: |
2757 | .device_err2: |
2758 | pop ecx |
2758 | pop ecx |
2759 | jmp .device_err |
2759 | jmp .device_err |
2760 | @@: |
2760 | @@: |
2761 | .noread: |
2761 | .noread: |
2762 | ; zero uninitialized data if file was extended (because hd_extend_file does not this) |
2762 | ; zero uninitialized data if file was extended (because hd_extend_file does not this) |
2763 | push eax ecx edi |
2763 | push eax ecx edi |
2764 | xor eax, eax |
2764 | xor eax, eax |
2765 | mov ecx, 0x200 |
2765 | mov ecx, 0x200 |
2766 | sub ecx, [esp+4+12] |
2766 | sub ecx, [esp+4+12] |
2767 | jbe @f |
2767 | jbe @f |
2768 | mov edi, buffer |
2768 | mov edi, buffer |
2769 | add edi, [esp+4+12] |
2769 | add edi, [esp+4+12] |
2770 | rep stosb |
2770 | rep stosb |
2771 | @@: |
2771 | @@: |
2772 | ; zero uninitialized data in the last sector |
2772 | ; zero uninitialized data in the last sector |
2773 | mov ecx, 0x200 |
2773 | mov ecx, 0x200 |
2774 | sub ecx, esi |
2774 | sub ecx, esi |
2775 | jbe @f |
2775 | jbe @f |
2776 | mov edi, buffer |
2776 | mov edi, buffer |
2777 | add edi, esi |
2777 | add edi, esi |
2778 | rep stosb |
2778 | rep stosb |
2779 | @@: |
2779 | @@: |
2780 | pop edi ecx |
2780 | pop edi ecx |
2781 | ; copy new data |
2781 | ; copy new data |
2782 | mov eax, edx |
2782 | mov eax, edx |
2783 | neg ebx |
2783 | neg ebx |
2784 | jecxz @f |
2784 | jecxz @f |
2785 | add ebx, buffer+0x200 |
2785 | add ebx, buffer+0x200 |
2786 | call memmove |
2786 | call memmove |
2787 | xor ebx, ebx |
2787 | xor ebx, ebx |
2788 | @@: |
2788 | @@: |
2789 | pop eax |
2789 | pop eax |
2790 | ; save sector |
2790 | ; save sector |
2791 | push ebx |
2791 | push ebx |
2792 | mov ebx, buffer |
2792 | mov ebx, buffer |
2793 | call hd_write |
2793 | call hd_write |
2794 | pop ebx |
2794 | pop ebx |
2795 | cmp [hd_error], 0 |
2795 | cmp [hd_error], 0 |
2796 | jnz .device_err2 |
2796 | jnz .device_err2 |
2797 | add edx, ecx |
2797 | add edx, ecx |
2798 | sub [esp], ecx |
2798 | sub [esp], ecx |
2799 | pop ecx |
2799 | pop ecx |
2800 | jz .ret |
2800 | jz .ret |
2801 | .skip: |
2801 | .skip: |
2802 | ; next sector |
2802 | ; next sector |
2803 | inc ebp |
2803 | inc ebp |
2804 | cmp ebp, [SECTORS_PER_CLUSTER] |
2804 | cmp ebp, [SECTORS_PER_CLUSTER] |
2805 | jb @f |
2805 | jb @f |
2806 | xor ebp, ebp |
2806 | xor ebp, ebp |
2807 | mov eax, edi |
2807 | mov eax, edi |
2808 | call get_FAT |
2808 | call get_FAT |
2809 | mov edi, eax |
2809 | mov edi, eax |
2810 | cmp [hd_error], 0 |
2810 | cmp [hd_error], 0 |
2811 | jnz .device_err |
2811 | jnz .device_err |
2812 | @@: |
2812 | @@: |
2813 | sub esi, 0x200 |
2813 | sub esi, 0x200 |
2814 | jae @f |
2814 | jae @f |
2815 | xor esi, esi |
2815 | xor esi, esi |
2816 | @@: |
2816 | @@: |
2817 | sub dword [esp], 0x200 |
2817 | sub dword [esp], 0x200 |
2818 | jae @f |
2818 | jae @f |
2819 | and dword [esp], 0 |
2819 | and dword [esp], 0 |
2820 | @@: jmp .write_loop |
2820 | @@: jmp .write_loop |
2821 | 2821 | ||
2822 | hd_extend_file.zero_size: |
2822 | hd_extend_file.zero_size: |
2823 | xor eax, eax |
2823 | xor eax, eax |
2824 | jmp hd_extend_file.start_extend |
2824 | jmp hd_extend_file.start_extend |
2825 | 2825 | ||
2826 | ; extends file on hd to given size (new data area is undefined) |
2826 | ; extends file on hd to given size (new data area is undefined) |
2827 | ; in: edi->direntry, ecx=new size |
2827 | ; in: edi->direntry, ecx=new size |
2828 | ; out: CF=0 => OK, eax=0 |
2828 | ; out: CF=0 => OK, eax=0 |
2829 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL or 11) |
2829 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL or 11) |
2830 | hd_extend_file: |
2830 | hd_extend_file: |
2831 | push ebp |
2831 | push ebp |
2832 | mov ebp, [SECTORS_PER_CLUSTER] |
2832 | mov ebp, [SECTORS_PER_CLUSTER] |
2833 | imul ebp, [BYTES_PER_SECTOR] |
2833 | imul ebp, [BYTES_PER_SECTOR] |
2834 | push ecx |
2834 | push ecx |
2835 | ; find the last cluster of file |
2835 | ; find the last cluster of file |
2836 | mov eax, [edi+20-2] |
2836 | mov eax, [edi+20-2] |
2837 | mov ax, [edi+26] |
2837 | mov ax, [edi+26] |
2838 | mov ecx, [edi+28] |
2838 | mov ecx, [edi+28] |
2839 | jecxz .zero_size |
2839 | jecxz .zero_size |
2840 | .last_loop: |
2840 | .last_loop: |
2841 | sub ecx, ebp |
2841 | sub ecx, ebp |
2842 | jbe .last_found |
2842 | jbe .last_found |
2843 | call get_FAT |
2843 | call get_FAT |
2844 | cmp [hd_error], 0 |
2844 | cmp [hd_error], 0 |
2845 | jz @f |
2845 | jz @f |
2846 | .device_err: |
2846 | .device_err: |
2847 | pop ecx |
2847 | pop ecx |
2848 | .device_err2: |
2848 | .device_err2: |
2849 | pop ebp |
2849 | pop ebp |
2850 | push 11 |
2850 | push 11 |
2851 | .ret_err: |
2851 | .ret_err: |
2852 | pop eax |
2852 | pop eax |
2853 | stc |
2853 | stc |
2854 | ret |
2854 | ret |
2855 | @@: |
2855 | @@: |
2856 | cmp eax, 2 |
2856 | cmp eax, 2 |
2857 | jb .fat_err |
2857 | jb .fat_err |
2858 | cmp eax, [fatRESERVED] |
2858 | cmp eax, [fatRESERVED] |
2859 | jb .last_loop |
2859 | jb .last_loop |
2860 | .fat_err: |
2860 | .fat_err: |
2861 | pop ecx ebp |
2861 | pop ecx ebp |
2862 | push ERROR_FAT_TABLE |
2862 | push ERROR_FAT_TABLE |
2863 | jmp .ret_err |
2863 | jmp .ret_err |
2864 | .last_found: |
2864 | .last_found: |
2865 | push eax |
2865 | push eax |
2866 | call get_FAT |
2866 | call get_FAT |
2867 | cmp [hd_error], 0 |
2867 | cmp [hd_error], 0 |
2868 | jz @f |
2868 | jz @f |
2869 | pop eax |
2869 | pop eax |
2870 | jmp .device_err |
2870 | jmp .device_err |
2871 | @@: |
2871 | @@: |
2872 | cmp eax, [fatRESERVED] |
2872 | cmp eax, [fatRESERVED] |
2873 | pop eax |
2873 | pop eax |
2874 | jb .fat_err |
2874 | jb .fat_err |
2875 | ; set length to full number of clusters |
2875 | ; set length to full number of clusters |
2876 | sub [edi+28], ecx |
2876 | sub [edi+28], ecx |
2877 | .start_extend: |
2877 | .start_extend: |
2878 | pop ecx |
2878 | pop ecx |
2879 | ; now do extend |
2879 | ; now do extend |
2880 | push edx |
2880 | push edx |
2881 | mov edx, 2 ; start scan from cluster 2 |
2881 | mov edx, 2 ; start scan from cluster 2 |
2882 | .extend_loop: |
2882 | .extend_loop: |
2883 | cmp [edi+28], ecx |
2883 | cmp [edi+28], ecx |
2884 | jae .extend_done |
2884 | jae .extend_done |
2885 | ; add new cluster |
2885 | ; add new cluster |
2886 | push eax |
2886 | push eax |
2887 | mov eax, edx |
2887 | mov eax, edx |
2888 | call get_free_FAT |
2888 | call get_free_FAT |
2889 | jc .disk_full |
2889 | jc .disk_full |
2890 | mov edx, [fatEND] |
2890 | mov edx, [fatEND] |
2891 | call set_FAT |
2891 | call set_FAT |
2892 | mov edx, eax |
2892 | mov edx, eax |
2893 | pop eax |
2893 | pop eax |
2894 | test eax, eax |
2894 | test eax, eax |
2895 | jz .first_cluster |
2895 | jz .first_cluster |
2896 | push edx |
2896 | push edx |
2897 | call set_FAT |
2897 | call set_FAT |
2898 | pop edx |
2898 | pop edx |
2899 | jmp @f |
2899 | jmp @f |
2900 | .first_cluster: |
2900 | .first_cluster: |
2901 | ror edx, 16 |
2901 | ror edx, 16 |
2902 | mov [edi+20], dx |
2902 | mov [edi+20], dx |
2903 | ror edx, 16 |
2903 | ror edx, 16 |
2904 | mov [edi+26], dx |
2904 | mov [edi+26], dx |
2905 | @@: |
2905 | @@: |
2906 | push ecx |
2906 | push ecx |
2907 | mov ecx, -1 |
2907 | mov ecx, -1 |
2908 | call add_disk_free_space |
2908 | call add_disk_free_space |
2909 | pop ecx |
2909 | pop ecx |
2910 | mov eax, edx |
2910 | mov eax, edx |
2911 | cmp [hd_error], 0 |
2911 | cmp [hd_error], 0 |
2912 | jnz .device_err3 |
2912 | jnz .device_err3 |
2913 | add [edi+28], ebp |
2913 | add [edi+28], ebp |
2914 | jmp .extend_loop |
2914 | jmp .extend_loop |
2915 | .extend_done: |
2915 | .extend_done: |
2916 | mov [edi+28], ecx |
2916 | mov [edi+28], ecx |
2917 | pop edx ebp |
2917 | pop edx ebp |
2918 | xor eax, eax ; CF=0 |
2918 | xor eax, eax ; CF=0 |
2919 | ret |
2919 | ret |
2920 | .device_err3: |
2920 | .device_err3: |
2921 | pop edx |
2921 | pop edx |
2922 | jmp .device_err2 |
2922 | jmp .device_err2 |
2923 | .disk_full: |
2923 | .disk_full: |
2924 | pop eax edx ebp |
2924 | pop eax edx ebp |
2925 | push ERROR_DISK_FULL |
2925 | push ERROR_DISK_FULL |
2926 | pop eax |
2926 | pop eax |
2927 | cmp [hd_error], 0 |
2927 | cmp [hd_error], 0 |
2928 | jz @f |
2928 | jz @f |
2929 | mov al, 11 |
2929 | mov al, 11 |
2930 | @@: stc |
2930 | @@: stc |
2931 | ret |
2931 | ret |
2932 | 2932 | ||
2933 | ;---------------------------------------------------------------- |
2933 | ;---------------------------------------------------------------- |
2934 | ; |
2934 | ; |
2935 | ; fs_HdSetFileEnd - set end of file on hard disk |
2935 | ; fs_HdSetFileEnd - set end of file on hard disk |
2936 | ; |
2936 | ; |
2937 | ; esi points to filename |
2937 | ; esi points to filename |
2938 | ; ebx points to 64-bit number = new file size |
2938 | ; ebx points to 64-bit number = new file size |
2939 | ; ecx ignored (reserved) |
2939 | ; ecx ignored (reserved) |
2940 | ; edx ignored (reserved) |
2940 | ; edx ignored (reserved) |
2941 | ; |
2941 | ; |
2942 | ; ret eax = 0 ok or other = errormsg |
2942 | ; ret eax = 0 ok or other = errormsg |
2943 | ; |
2943 | ; |
2944 | ;-------------------------------------------------------------- |
2944 | ;-------------------------------------------------------------- |
2945 | fs_HdSetFileEnd: |
2945 | fs_HdSetFileEnd: |
2946 | cmp [fs_type], 1 |
2946 | cmp [fs_type], 1 |
2947 | jz ntfs_HdSetFileEnd |
2947 | jz ntfs_HdSetFileEnd |
2948 | cmp [fs_type], 16 |
2948 | cmp [fs_type], 16 |
2949 | jz @f |
2949 | jz @f |
2950 | cmp [fs_type], 32 |
2950 | cmp [fs_type], 32 |
2951 | jz @f |
2951 | jz @f |
2952 | push ERROR_UNKNOWN_FS |
2952 | push ERROR_UNKNOWN_FS |
2953 | .ret: |
2953 | .ret: |
2954 | pop eax |
2954 | pop eax |
2955 | ret |
2955 | ret |
2956 | @@: |
2956 | @@: |
2957 | cmp byte [esi], 0 |
2957 | cmp byte [esi], 0 |
2958 | jnz @f |
2958 | jnz @f |
2959 | .access_denied: |
2959 | .access_denied: |
2960 | push ERROR_ACCESS_DENIED |
2960 | push ERROR_ACCESS_DENIED |
2961 | jmp .ret |
2961 | jmp .ret |
2962 | @@: |
2962 | @@: |
2963 | push edi |
2963 | push edi |
2964 | call hd_find_lfn |
2964 | call hd_find_lfn |
2965 | pushfd |
2965 | pushfd |
2966 | cmp [hd_error], 0 |
2966 | cmp [hd_error], 0 |
2967 | jz @f |
2967 | jz @f |
2968 | popfd |
2968 | popfd |
2969 | push 11 |
2969 | push 11 |
2970 | jmp .ret |
2970 | jmp .ret |
2971 | @@: |
2971 | @@: |
2972 | popfd |
2972 | popfd |
2973 | jnc @f |
2973 | jnc @f |
2974 | pop edi |
2974 | pop edi |
2975 | push ERROR_FILE_NOT_FOUND |
2975 | push ERROR_FILE_NOT_FOUND |
2976 | jmp .ret |
2976 | jmp .ret |
2977 | @@: |
2977 | @@: |
2978 | ; must not be directory |
2978 | ; must not be directory |
2979 | test byte [edi+11], 10h |
2979 | test byte [edi+11], 10h |
2980 | jz @f |
2980 | jz @f |
2981 | pop edi |
2981 | pop edi |
2982 | jmp .access_denied |
2982 | jmp .access_denied |
2983 | @@: |
2983 | @@: |
2984 | ; file size must not exceed 4 Gb |
2984 | ; file size must not exceed 4 Gb |
2985 | cmp dword [ebx+4], 0 |
2985 | cmp dword [ebx+4], 0 |
2986 | jz @f |
2986 | jz @f |
2987 | pop edi |
2987 | pop edi |
2988 | push ERROR_END_OF_FILE |
2988 | push ERROR_END_OF_FILE |
2989 | jmp .ret |
2989 | jmp .ret |
2990 | @@: |
2990 | @@: |
2991 | push eax ; save directory sector |
2991 | push eax ; save directory sector |
2992 | ; set file modification date/time to current |
2992 | ; set file modification date/time to current |
2993 | call fat_update_datetime |
2993 | call fat_update_datetime |
2994 | mov eax, [ebx] |
2994 | mov eax, [ebx] |
2995 | cmp eax, [edi+28] |
2995 | cmp eax, [edi+28] |
2996 | jb .truncate |
2996 | jb .truncate |
2997 | ja .expand |
2997 | ja .expand |
2998 | pop eax |
2998 | pop eax |
2999 | mov ebx, buffer |
2999 | mov ebx, buffer |
3000 | call hd_write |
3000 | call hd_write |
3001 | pop edi |
3001 | pop edi |
3002 | xor eax, eax |
3002 | xor eax, eax |
3003 | cmp [hd_error], 0 |
3003 | cmp [hd_error], 0 |
3004 | jz @f |
3004 | jz @f |
3005 | mov al, 11 |
3005 | mov al, 11 |
3006 | @@: |
3006 | @@: |
3007 | ret |
3007 | ret |
3008 | .expand: |
3008 | .expand: |
3009 | push ebx ebp ecx |
3009 | push ebx ebp ecx |
3010 | push dword [edi+28] ; save old size |
3010 | push dword [edi+28] ; save old size |
3011 | mov ecx, eax |
3011 | mov ecx, eax |
3012 | call hd_extend_file |
3012 | call hd_extend_file |
3013 | push eax ; return code |
3013 | push eax ; return code |
3014 | jnc .expand_ok |
3014 | jnc .expand_ok |
3015 | cmp al, ERROR_DISK_FULL |
3015 | cmp al, ERROR_DISK_FULL |
3016 | jz .disk_full |
3016 | jz .disk_full |
3017 | .pop_ret: |
3017 | .pop_ret: |
3018 | call update_disk |
3018 | call update_disk |
3019 | pop eax ecx ebp ebx ecx edi edi |
3019 | pop eax ecx ebp ebx ecx edi edi |
3020 | ret |
3020 | ret |
3021 | .expand_ok: |
3021 | .expand_ok: |
3022 | .disk_full: |
3022 | .disk_full: |
3023 | ; save directory |
3023 | ; save directory |
3024 | mov eax, [edi+28] |
3024 | mov eax, [edi+28] |
3025 | xchg eax, [esp+20] |
3025 | xchg eax, [esp+20] |
3026 | mov ebx, buffer |
3026 | mov ebx, buffer |
3027 | call hd_write |
3027 | call hd_write |
3028 | mov eax, [edi+20-2] |
3028 | mov eax, [edi+20-2] |
3029 | mov ax, [edi+26] |
3029 | mov ax, [edi+26] |
3030 | mov edi, eax |
3030 | mov edi, eax |
3031 | cmp [hd_error], 0 |
3031 | cmp [hd_error], 0 |
3032 | jz @f |
3032 | jz @f |
3033 | .pop_ret11: |
3033 | .pop_ret11: |
3034 | mov byte [esp], 11 |
3034 | mov byte [esp], 11 |
3035 | jmp .pop_ret |
3035 | jmp .pop_ret |
3036 | @@: |
3036 | @@: |
3037 | ; now zero new data |
3037 | ; now zero new data |
3038 | xor ebp, ebp |
3038 | xor ebp, ebp |
3039 | ; edi=current cluster, ebp=sector in cluster |
3039 | ; edi=current cluster, ebp=sector in cluster |
3040 | ; [esp+20]=new size, [esp+4]=old size, [esp]=return code |
3040 | ; [esp+20]=new size, [esp+4]=old size, [esp]=return code |
3041 | .zero_loop: |
3041 | .zero_loop: |
3042 | sub dword [esp+4], 0x200 |
3042 | sub dword [esp+4], 0x200 |
3043 | jae .next_cluster |
3043 | jae .next_cluster |
3044 | lea eax, [edi-2] |
3044 | lea eax, [edi-2] |
3045 | imul eax, [SECTORS_PER_CLUSTER] |
3045 | imul eax, [SECTORS_PER_CLUSTER] |
3046 | add eax, [DATA_START] |
3046 | add eax, [DATA_START] |
3047 | add eax, ebp |
3047 | add eax, ebp |
3048 | cmp dword [esp+4], -0x200 |
3048 | cmp dword [esp+4], -0x200 |
3049 | jz .noread |
3049 | jz .noread |
3050 | mov ebx, buffer |
3050 | mov ebx, buffer |
3051 | call hd_read |
3051 | call hd_read |
3052 | cmp [hd_error], 0 |
3052 | cmp [hd_error], 0 |
3053 | jnz .err_next |
3053 | jnz .err_next |
3054 | .noread: |
3054 | .noread: |
3055 | mov ecx, [esp+4] |
3055 | mov ecx, [esp+4] |
3056 | neg ecx |
3056 | neg ecx |
3057 | push edi |
3057 | push edi |
3058 | mov edi, buffer+0x200 |
3058 | mov edi, buffer+0x200 |
3059 | add edi, [esp+8] |
3059 | add edi, [esp+8] |
3060 | push eax |
3060 | push eax |
3061 | xor eax, eax |
3061 | xor eax, eax |
3062 | mov [esp+12], eax |
3062 | mov [esp+12], eax |
3063 | rep stosb |
3063 | rep stosb |
3064 | pop eax |
3064 | pop eax |
3065 | pop edi |
3065 | pop edi |
3066 | call hd_write |
3066 | call hd_write |
3067 | cmp [hd_error], 0 |
3067 | cmp [hd_error], 0 |
3068 | jz .next_cluster |
3068 | jz .next_cluster |
3069 | .err_next: |
3069 | .err_next: |
3070 | mov byte [esp], 11 |
3070 | mov byte [esp], 11 |
3071 | .next_cluster: |
3071 | .next_cluster: |
3072 | sub dword [esp+20], 0x200 |
3072 | sub dword [esp+20], 0x200 |
3073 | jbe .pop_ret |
3073 | jbe .pop_ret |
3074 | inc ebp |
3074 | inc ebp |
3075 | cmp ebp, [SECTORS_PER_CLUSTER] |
3075 | cmp ebp, [SECTORS_PER_CLUSTER] |
3076 | jb .zero_loop |
3076 | jb .zero_loop |
3077 | xor ebp, ebp |
3077 | xor ebp, ebp |
3078 | mov eax, edi |
3078 | mov eax, edi |
3079 | call get_FAT |
3079 | call get_FAT |
3080 | mov edi, eax |
3080 | mov edi, eax |
3081 | cmp [hd_error], 0 |
3081 | cmp [hd_error], 0 |
3082 | jnz .pop_ret11 |
3082 | jnz .pop_ret11 |
3083 | jmp .zero_loop |
3083 | jmp .zero_loop |
3084 | .truncate: |
3084 | .truncate: |
3085 | mov [edi+28], eax |
3085 | mov [edi+28], eax |
3086 | push ecx |
3086 | push ecx |
3087 | mov ecx, [edi+20-2] |
3087 | mov ecx, [edi+20-2] |
3088 | mov cx, [edi+26] |
3088 | mov cx, [edi+26] |
3089 | push eax |
3089 | push eax |
3090 | test eax, eax |
3090 | test eax, eax |
3091 | jz .zero_size |
3091 | jz .zero_size |
3092 | ; find new last cluster |
3092 | ; find new last cluster |
3093 | @@: |
3093 | @@: |
3094 | mov eax, [SECTORS_PER_CLUSTER] |
3094 | mov eax, [SECTORS_PER_CLUSTER] |
3095 | shl eax, 9 |
3095 | shl eax, 9 |
3096 | sub [esp], eax |
3096 | sub [esp], eax |
3097 | jbe @f |
3097 | jbe @f |
3098 | mov eax, ecx |
3098 | mov eax, ecx |
3099 | call get_FAT |
3099 | call get_FAT |
3100 | mov ecx, eax |
3100 | mov ecx, eax |
3101 | cmp [hd_error], 0 |
3101 | cmp [hd_error], 0 |
3102 | jz @b |
3102 | jz @b |
3103 | .device_err3: |
3103 | .device_err3: |
3104 | pop eax ecx eax edi |
3104 | pop eax ecx eax edi |
3105 | push 11 |
3105 | push 11 |
3106 | pop eax |
3106 | pop eax |
3107 | ret |
3107 | ret |
3108 | @@: |
3108 | @@: |
3109 | ; we will zero data at the end of last sector - remember it |
3109 | ; we will zero data at the end of last sector - remember it |
3110 | push ecx |
3110 | push ecx |
3111 | ; terminate FAT chain |
3111 | ; terminate FAT chain |
3112 | push edx |
3112 | push edx |
3113 | mov eax, ecx |
3113 | mov eax, ecx |
3114 | mov edx, [fatEND] |
3114 | mov edx, [fatEND] |
3115 | call set_FAT |
3115 | call set_FAT |
3116 | mov eax, edx |
3116 | mov eax, edx |
3117 | pop edx |
3117 | pop edx |
3118 | cmp [hd_error], 0 |
3118 | cmp [hd_error], 0 |
3119 | jz @f |
3119 | jz @f |
3120 | .device_err4: |
3120 | .device_err4: |
3121 | pop ecx |
3121 | pop ecx |
3122 | jmp .device_err3 |
3122 | jmp .device_err3 |
3123 | .zero_size: |
3123 | .zero_size: |
3124 | and word [edi+20], 0 |
3124 | and word [edi+20], 0 |
3125 | and word [edi+26], 0 |
3125 | and word [edi+26], 0 |
3126 | push 0 |
3126 | push 0 |
3127 | mov eax, ecx |
3127 | mov eax, ecx |
3128 | @@: |
3128 | @@: |
3129 | ; delete FAT chain |
3129 | ; delete FAT chain |
3130 | call clear_cluster_chain |
3130 | call clear_cluster_chain |
3131 | cmp [hd_error], 0 |
3131 | cmp [hd_error], 0 |
3132 | jnz .device_err4 |
3132 | jnz .device_err4 |
3133 | ; save directory |
3133 | ; save directory |
3134 | mov eax, [esp+12] |
3134 | mov eax, [esp+12] |
3135 | push ebx |
3135 | push ebx |
3136 | mov ebx, buffer |
3136 | mov ebx, buffer |
3137 | call hd_write |
3137 | call hd_write |
3138 | pop ebx |
3138 | pop ebx |
3139 | cmp [hd_error], 0 |
3139 | cmp [hd_error], 0 |
3140 | jnz .device_err4 |
3140 | jnz .device_err4 |
3141 | ; zero last sector, ignore errors |
3141 | ; zero last sector, ignore errors |
3142 | pop ecx |
3142 | pop ecx |
3143 | pop eax |
3143 | pop eax |
3144 | dec ecx |
3144 | dec ecx |
3145 | imul ecx, [SECTORS_PER_CLUSTER] |
3145 | imul ecx, [SECTORS_PER_CLUSTER] |
3146 | add ecx, [DATA_START] |
3146 | add ecx, [DATA_START] |
3147 | push eax |
3147 | push eax |
3148 | sar eax, 9 |
3148 | sar eax, 9 |
3149 | add ecx, eax |
3149 | add ecx, eax |
3150 | pop eax |
3150 | pop eax |
3151 | and eax, 0x1FF |
3151 | and eax, 0x1FF |
3152 | jz .truncate_done |
3152 | jz .truncate_done |
3153 | push ebx eax |
3153 | push ebx eax |
3154 | mov eax, ecx |
3154 | mov eax, ecx |
3155 | mov ebx, buffer |
3155 | mov ebx, buffer |
3156 | call hd_read |
3156 | call hd_read |
3157 | pop eax |
3157 | pop eax |
3158 | lea edi, [buffer+eax] |
3158 | lea edi, [buffer+eax] |
3159 | push ecx |
3159 | push ecx |
3160 | mov ecx, 0x200 |
3160 | mov ecx, 0x200 |
3161 | sub ecx, eax |
3161 | sub ecx, eax |
3162 | xor eax, eax |
3162 | xor eax, eax |
3163 | rep stosb |
3163 | rep stosb |
3164 | pop eax |
3164 | pop eax |
3165 | call hd_write |
3165 | call hd_write |
3166 | pop ebx |
3166 | pop ebx |
3167 | .truncate_done: |
3167 | .truncate_done: |
3168 | pop ecx eax edi |
3168 | pop ecx eax edi |
3169 | call update_disk |
3169 | call update_disk |
3170 | xor eax, eax |
3170 | xor eax, eax |
3171 | cmp [hd_error], 0 |
3171 | cmp [hd_error], 0 |
3172 | jz @f |
3172 | jz @f |
3173 | mov al, 11 |
3173 | mov al, 11 |
3174 | @@: |
3174 | @@: |
3175 | ret |
3175 | ret |
3176 | 3176 | ||
3177 | fs_HdGetFileInfo: |
3177 | fs_HdGetFileInfo: |
3178 | cmp [fs_type], 1 |
3178 | cmp [fs_type], 1 |
3179 | jz ntfs_HdGetFileInfo |
3179 | jz ntfs_HdGetFileInfo |
3180 | cmp [fs_type], 16 |
3180 | cmp [fs_type], 16 |
3181 | jz @f |
3181 | jz @f |
3182 | cmp [fs_type], 32 |
3182 | cmp [fs_type], 32 |
3183 | jz @f |
3183 | jz @f |
3184 | mov eax, ERROR_UNKNOWN_FS |
3184 | mov eax, ERROR_UNKNOWN_FS |
3185 | ret |
3185 | ret |
3186 | @@: |
3186 | @@: |
3187 | cmp byte [esi], 0 |
3187 | cmp byte [esi], 0 |
3188 | jnz @f |
3188 | jnz @f |
3189 | mov eax, 2 |
3189 | mov eax, 2 |
3190 | ret |
3190 | ret |
3191 | @@: |
3191 | @@: |
3192 | push edi |
3192 | push edi |
3193 | call hd_find_lfn |
3193 | call hd_find_lfn |
3194 | pushfd |
3194 | pushfd |
3195 | cmp [hd_error], 0 |
3195 | cmp [hd_error], 0 |
3196 | jz @f |
3196 | jz @f |
3197 | popfd |
3197 | popfd |
3198 | pop edi |
3198 | pop edi |
3199 | mov eax, 11 |
3199 | mov eax, 11 |
3200 | ret |
3200 | ret |
3201 | @@: |
3201 | @@: |
3202 | popfd |
3202 | popfd |
3203 | jmp fs_GetFileInfo_finish |
3203 | jmp fs_GetFileInfo_finish |
3204 | 3204 | ||
3205 | fs_HdSetFileInfo: |
3205 | fs_HdSetFileInfo: |
3206 | cmp [fs_type], 1 |
3206 | cmp [fs_type], 1 |
3207 | jz ntfs_HdSetFileInfo |
3207 | jz ntfs_HdSetFileInfo |
3208 | cmp [fs_type], 16 |
3208 | cmp [fs_type], 16 |
3209 | jz @f |
3209 | jz @f |
3210 | cmp [fs_type], 32 |
3210 | cmp [fs_type], 32 |
3211 | jz @f |
3211 | jz @f |
3212 | mov eax, ERROR_UNKNOWN_FS |
3212 | mov eax, ERROR_UNKNOWN_FS |
3213 | ret |
3213 | ret |
3214 | @@: |
3214 | @@: |
3215 | cmp byte [esi], 0 |
3215 | cmp byte [esi], 0 |
3216 | jnz @f |
3216 | jnz @f |
3217 | mov eax, 2 |
3217 | mov eax, 2 |
3218 | ret |
3218 | ret |
3219 | @@: |
3219 | @@: |
3220 | push edi |
3220 | push edi |
3221 | call hd_find_lfn |
3221 | call hd_find_lfn |
3222 | pushfd |
3222 | pushfd |
3223 | cmp [hd_error], 0 |
3223 | cmp [hd_error], 0 |
3224 | jz @f |
3224 | jz @f |
3225 | popfd |
3225 | popfd |
3226 | pop edi |
3226 | pop edi |
3227 | mov eax, 11 |
3227 | mov eax, 11 |
3228 | ret |
3228 | ret |
3229 | @@: |
3229 | @@: |
3230 | popfd |
3230 | popfd |
3231 | jnc @f |
3231 | jnc @f |
3232 | pop edi |
3232 | pop edi |
3233 | mov eax, ERROR_FILE_NOT_FOUND |
3233 | mov eax, ERROR_FILE_NOT_FOUND |
3234 | ret |
3234 | ret |
3235 | @@: |
3235 | @@: |
3236 | push eax |
3236 | push eax |
3237 | call bdfe_to_fat_entry |
3237 | call bdfe_to_fat_entry |
3238 | pop eax |
3238 | pop eax |
3239 | mov ebx, buffer |
3239 | mov ebx, buffer |
3240 | call hd_write |
3240 | call hd_write |
3241 | call update_disk |
3241 | call update_disk |
3242 | pop edi |
3242 | pop edi |
3243 | xor eax, eax |
3243 | xor eax, eax |
3244 | ret |
3244 | ret |
3245 | 3245 | ||
3246 | if 0 ; starting from revision 237 execute is implemented in taskman.inc |
3246 | if 0 ; starting from revision 237 execute is implemented in taskman.inc |
3247 | ; through fs_XxxGetFileInfo and fs_XxxRead |
3247 | ; through fs_XxxGetFileInfo and fs_XxxRead |
3248 | ;---------------------------------------------------------------- |
3248 | ;---------------------------------------------------------------- |
3249 | ; |
3249 | ; |
3250 | ; fs_HdExecute - LFN variant for executing from harddisk |
3250 | ; fs_HdExecute - LFN variant for executing from harddisk |
3251 | ; |
3251 | ; |
3252 | ; esi points to hd filename (e.g. 'dir1/name') |
3252 | ; esi points to hd filename (e.g. 'dir1/name') |
3253 | ; ebp points to full filename (e.g. '/hd0/1/dir1/name') |
3253 | ; ebp points to full filename (e.g. '/hd0/1/dir1/name') |
3254 | ; dword [ebx] = flags |
3254 | ; dword [ebx] = flags |
3255 | ; dword [ebx+4] = cmdline |
3255 | ; dword [ebx+4] = cmdline |
3256 | ; |
3256 | ; |
3257 | ; ret ebx,edx destroyed |
3257 | ; ret ebx,edx destroyed |
3258 | ; eax > 0 - PID, < 0 - error |
3258 | ; eax > 0 - PID, < 0 - error |
3259 | ; |
3259 | ; |
3260 | ;-------------------------------------------------------------- |
3260 | ;-------------------------------------------------------------- |
3261 | fs_HdExecute: |
3261 | fs_HdExecute: |
3262 | mov edx, [ebx] |
3262 | mov edx, [ebx] |
3263 | mov ebx, [ebx+4] |
3263 | mov ebx, [ebx+4] |
3264 | test ebx, ebx |
3264 | test ebx, ebx |
3265 | jz @f |
3265 | jz @f |
3266 | add ebx, std_application_base_address |
3266 | add ebx, std_application_base_address |
3267 | @@: |
3267 | @@: |
3268 | 3268 | ||
3269 | ;---------------------------------------------------------------- |
3269 | ;---------------------------------------------------------------- |
3270 | ; |
3270 | ; |
3271 | ; fs_HdExecute.flags - second entry |
3271 | ; fs_HdExecute.flags - second entry |
3272 | ; |
3272 | ; |
3273 | ; esi points to floppy filename (kernel address) |
3273 | ; esi points to floppy filename (kernel address) |
3274 | ; ebp points to full filename |
3274 | ; ebp points to full filename |
3275 | ; edx flags |
3275 | ; edx flags |
3276 | ; ebx cmdline (kernel address) |
3276 | ; ebx cmdline (kernel address) |
3277 | ; |
3277 | ; |
3278 | ; ret eax > 0 - PID, < 0 - error |
3278 | ; ret eax > 0 - PID, < 0 - error |
3279 | ; |
3279 | ; |
3280 | ;-------------------------------------------------------------- |
3280 | ;-------------------------------------------------------------- |
3281 | 3281 | ||
3282 | .flags: |
3282 | .flags: |
3283 | cmp [fat_type], 0 |
3283 | cmp [fat_type], 0 |
3284 | jnz @f |
3284 | jnz @f |
3285 | mov eax, -ERROR_UNKNOWN_FS |
3285 | mov eax, -ERROR_UNKNOWN_FS |
3286 | ret |
3286 | ret |
3287 | @@: |
3287 | @@: |
3288 | cmp byte [esi], 0 |
3288 | cmp byte [esi], 0 |
3289 | jnz @f |
3289 | jnz @f |
3290 | ; cannot execute root! |
3290 | ; cannot execute root! |
3291 | mov eax, -ERROR_ACCESS_DENIED |
3291 | mov eax, -ERROR_ACCESS_DENIED |
3292 | ret |
3292 | ret |
3293 | @@: |
3293 | @@: |
3294 | push edi |
3294 | push edi |
3295 | call hd_find_lfn |
3295 | call hd_find_lfn |
3296 | jnc .found |
3296 | jnc .found |
3297 | pop edi |
3297 | pop edi |
3298 | mov eax, -ERROR_FILE_NOT_FOUND |
3298 | mov eax, -ERROR_FILE_NOT_FOUND |
3299 | cmp [hd_error], 0 |
3299 | cmp [hd_error], 0 |
3300 | jz @f |
3300 | jz @f |
3301 | mov al, -11 |
3301 | mov al, -11 |
3302 | @@: |
3302 | @@: |
3303 | ret |
3303 | ret |
3304 | .found: |
3304 | .found: |
3305 | mov eax, [edi+20-2] |
3305 | mov eax, [edi+20-2] |
3306 | mov ax, [edi+26] |
3306 | mov ax, [edi+26] |
3307 | push 0 |
3307 | push 0 |
3308 | push eax |
3308 | push eax |
3309 | push dword [edi+28] ; size |
3309 | push dword [edi+28] ; size |
3310 | push .DoRead |
3310 | push .DoRead |
3311 | call fs_execute |
3311 | call fs_execute |
3312 | add esp, 16 |
3312 | add esp, 16 |
3313 | pop edi |
3313 | pop edi |
3314 | ret |
3314 | ret |
3315 | 3315 | ||
3316 | .DoRead: |
3316 | .DoRead: |
3317 | ; read next block |
3317 | ; read next block |
3318 | ; in: eax->parameters, edi->buffer |
3318 | ; in: eax->parameters, edi->buffer |
3319 | ; out: eax = error code |
3319 | ; out: eax = error code |
3320 | pushad |
3320 | pushad |
3321 | cmp dword [eax], 0 ; file size |
3321 | cmp dword [eax], 0 ; file size |
3322 | jz .eof |
3322 | jz .eof |
3323 | add eax, 4 |
3323 | add eax, 4 |
3324 | call fat_get_sector |
3324 | call fat_get_sector |
3325 | mov ebx, edi |
3325 | mov ebx, edi |
3326 | call hd_read |
3326 | call hd_read |
3327 | cmp [hd_error], 0 |
3327 | cmp [hd_error], 0 |
3328 | jnz .err |
3328 | jnz .err |
3329 | mov eax, [esp+28] |
3329 | mov eax, [esp+28] |
3330 | mov ecx, [eax] |
3330 | mov ecx, [eax] |
3331 | sub ecx, 512 |
3331 | sub ecx, 512 |
3332 | jae @f |
3332 | jae @f |
3333 | lea edi, [edi+ecx+512] |
3333 | lea edi, [edi+ecx+512] |
3334 | neg ecx |
3334 | neg ecx |
3335 | push eax |
3335 | push eax |
3336 | xor eax, eax |
3336 | xor eax, eax |
3337 | rep stosb |
3337 | rep stosb |
3338 | pop eax |
3338 | pop eax |
3339 | @@: |
3339 | @@: |
3340 | mov [eax], ecx |
3340 | mov [eax], ecx |
3341 | mov edx, [eax+8] |
3341 | mov edx, [eax+8] |
3342 | inc edx |
3342 | inc edx |
3343 | cmp edx, [SECTORS_PER_CLUSTER] |
3343 | cmp edx, [SECTORS_PER_CLUSTER] |
3344 | jb @f |
3344 | jb @f |
3345 | push eax |
3345 | push eax |
3346 | mov eax, [eax+4] |
3346 | mov eax, [eax+4] |
3347 | call get_FAT |
3347 | call get_FAT |
3348 | cmp [hd_error], 0 |
3348 | cmp [hd_error], 0 |
3349 | jnz .err |
3349 | jnz .err |
3350 | mov ecx, eax |
3350 | mov ecx, eax |
3351 | pop eax |
3351 | pop eax |
3352 | mov [eax+4], ecx |
3352 | mov [eax+4], ecx |
3353 | xor edx, edx |
3353 | xor edx, edx |
3354 | @@: |
3354 | @@: |
3355 | mov [eax+8], edx |
3355 | mov [eax+8], edx |
3356 | popad |
3356 | popad |
3357 | xor eax, eax |
3357 | xor eax, eax |
3358 | ret |
3358 | ret |
3359 | .eof: |
3359 | .eof: |
3360 | popad |
3360 | popad |
3361 | mov eax, 6 |
3361 | mov eax, 6 |
3362 | ret |
3362 | ret |
3363 | .err: |
3363 | .err: |
3364 | popad |
3364 | popad |
3365 | mov eax, 11 |
3365 | mov eax, 11 |
3366 | ret |
3366 | ret |
3367 | end if |
3367 | end if |
3368 | 3368 | ||
3369 | ;---------------------------------------------------------------- |
3369 | ;---------------------------------------------------------------- |
3370 | ; |
3370 | ; |
3371 | ; fs_HdDelete - delete file or empty folder from hard disk |
3371 | ; fs_HdDelete - delete file or empty folder from hard disk |
3372 | ; |
3372 | ; |
3373 | ; esi points to filename |
3373 | ; esi points to filename |
3374 | ; |
3374 | ; |
3375 | ; ret eax = 0 ok or other = errormsg |
3375 | ; ret eax = 0 ok or other = errormsg |
3376 | ; |
3376 | ; |
3377 | ;-------------------------------------------------------------- |
3377 | ;-------------------------------------------------------------- |
3378 | fs_HdDelete: |
3378 | fs_HdDelete: |
3379 | cmp [fs_type], 1 |
3379 | cmp [fs_type], 1 |
3380 | jz ntfs_HdDelete |
3380 | jz ntfs_HdDelete |
3381 | cmp [fs_type], 16 |
3381 | cmp [fs_type], 16 |
3382 | jz @f |
3382 | jz @f |
3383 | cmp [fs_type], 32 |
3383 | cmp [fs_type], 32 |
3384 | jz @f |
3384 | jz @f |
3385 | push ERROR_UNKNOWN_FS |
3385 | push ERROR_UNKNOWN_FS |
3386 | .pop_ret: |
3386 | .pop_ret: |
3387 | pop eax |
3387 | pop eax |
3388 | ret |
3388 | ret |
3389 | @@: |
3389 | @@: |
3390 | cmp byte [esi], 0 |
3390 | cmp byte [esi], 0 |
3391 | jnz @f |
3391 | jnz @f |
3392 | ; cannot delete root! |
3392 | ; cannot delete root! |
3393 | .access_denied: |
3393 | .access_denied: |
3394 | push ERROR_ACCESS_DENIED |
3394 | push ERROR_ACCESS_DENIED |
3395 | jmp .pop_ret |
3395 | jmp .pop_ret |
3396 | @@: |
3396 | @@: |
3397 | and [longname_sec1], 0 |
3397 | and [longname_sec1], 0 |
3398 | and [longname_sec2], 0 |
3398 | and [longname_sec2], 0 |
3399 | push edi |
3399 | push edi |
3400 | call hd_find_lfn |
3400 | call hd_find_lfn |
3401 | jnc .found |
3401 | jnc .found |
3402 | pop edi |
3402 | pop edi |
3403 | push ERROR_FILE_NOT_FOUND |
3403 | push ERROR_FILE_NOT_FOUND |
3404 | jmp .pop_ret |
3404 | jmp .pop_ret |
3405 | .found: |
3405 | .found: |
3406 | cmp dword [edi], '. ' |
3406 | cmp dword [edi], '. ' |
3407 | jz .access_denied2 |
3407 | jz .access_denied2 |
3408 | cmp dword [edi], '.. ' |
3408 | cmp dword [edi], '.. ' |
3409 | jz .access_denied2 |
3409 | jz .access_denied2 |
3410 | test byte [edi+11], 10h |
3410 | test byte [edi+11], 10h |
3411 | jz .dodel |
3411 | jz .dodel |
3412 | ; we can delete only empty folders! |
3412 | ; we can delete only empty folders! |
3413 | pushad |
3413 | pushad |
3414 | mov ebp, [edi+20-2] |
3414 | mov ebp, [edi+20-2] |
3415 | mov bp, [edi+26] |
3415 | mov bp, [edi+26] |
3416 | xor ecx, ecx |
3416 | xor ecx, ecx |
3417 | lea eax, [ebp-2] |
3417 | lea eax, [ebp-2] |
3418 | imul eax, [SECTORS_PER_CLUSTER] |
3418 | imul eax, [SECTORS_PER_CLUSTER] |
3419 | add eax, [DATA_START] |
3419 | add eax, [DATA_START] |
3420 | mov ebx, buffer |
3420 | mov ebx, buffer |
3421 | call hd_read |
3421 | call hd_read |
3422 | cmp [hd_error], 0 |
3422 | cmp [hd_error], 0 |
3423 | jnz .err1 |
3423 | jnz .err1 |
3424 | add ebx, 2*0x20 |
3424 | add ebx, 2*0x20 |
3425 | .checkempty: |
3425 | .checkempty: |
3426 | cmp byte [ebx], 0 |
3426 | cmp byte [ebx], 0 |
3427 | jz .empty |
3427 | jz .empty |
3428 | cmp byte [ebx], 0xE5 |
3428 | cmp byte [ebx], 0xE5 |
3429 | jnz .notempty |
3429 | jnz .notempty |
3430 | add ebx, 0x20 |
3430 | add ebx, 0x20 |
3431 | cmp ebx, buffer+0x200 |
3431 | cmp ebx, buffer+0x200 |
3432 | jb .checkempty |
3432 | jb .checkempty |
3433 | inc ecx |
3433 | inc ecx |
3434 | cmp ecx, [SECTORS_PER_CLUSTER] |
3434 | cmp ecx, [SECTORS_PER_CLUSTER] |
3435 | jb @f |
3435 | jb @f |
3436 | mov eax, ebp |
3436 | mov eax, ebp |
3437 | call get_FAT |
3437 | call get_FAT |
3438 | cmp [hd_error], 0 |
3438 | cmp [hd_error], 0 |
3439 | jnz .err1 |
3439 | jnz .err1 |
3440 | mov ebp, eax |
3440 | mov ebp, eax |
3441 | xor ecx, ecx |
3441 | xor ecx, ecx |
3442 | @@: |
3442 | @@: |
3443 | lea eax, [ebp-2] |
3443 | lea eax, [ebp-2] |
3444 | imul eax, [SECTORS_PER_CLUSTER] |
3444 | imul eax, [SECTORS_PER_CLUSTER] |
3445 | add eax, [DATA_START] |
3445 | add eax, [DATA_START] |
3446 | add eax, ecx |
3446 | add eax, ecx |
3447 | mov ebx, buffer |
3447 | mov ebx, buffer |
3448 | call hd_read |
3448 | call hd_read |
3449 | cmp [hd_error], 0 |
3449 | cmp [hd_error], 0 |
3450 | jz .checkempty |
3450 | jz .checkempty |
3451 | .err1: |
3451 | .err1: |
3452 | popad |
3452 | popad |
3453 | .err2: |
3453 | .err2: |
3454 | pop edi |
3454 | pop edi |
3455 | push 11 |
3455 | push 11 |
3456 | pop eax |
3456 | pop eax |
3457 | ret |
3457 | ret |
3458 | .notempty: |
3458 | .notempty: |
3459 | popad |
3459 | popad |
3460 | .access_denied2: |
3460 | .access_denied2: |
3461 | pop edi |
3461 | pop edi |
3462 | push ERROR_ACCESS_DENIED |
3462 | push ERROR_ACCESS_DENIED |
3463 | pop eax |
3463 | pop eax |
3464 | ret |
3464 | ret |
3465 | .empty: |
3465 | .empty: |
3466 | popad |
3466 | popad |
3467 | push ebx |
3467 | push ebx |
3468 | mov ebx, buffer |
3468 | mov ebx, buffer |
3469 | call hd_read |
3469 | call hd_read |
3470 | pop ebx |
3470 | pop ebx |
3471 | cmp [hd_error], 0 |
3471 | cmp [hd_error], 0 |
3472 | jnz .err2 |
3472 | jnz .err2 |
3473 | .dodel: |
3473 | .dodel: |
3474 | push eax |
3474 | push eax |
3475 | mov eax, [edi+20-2] |
3475 | mov eax, [edi+20-2] |
3476 | mov ax, [edi+26] |
3476 | mov ax, [edi+26] |
3477 | xchg eax, [esp] |
3477 | xchg eax, [esp] |
3478 | ; delete folder entry |
3478 | ; delete folder entry |
3479 | mov byte [edi], 0xE5 |
3479 | mov byte [edi], 0xE5 |
3480 | ; delete LFN (if present) |
3480 | ; delete LFN (if present) |
3481 | .lfndel: |
3481 | .lfndel: |
3482 | cmp edi, buffer |
3482 | cmp edi, buffer |
3483 | ja @f |
3483 | ja @f |
3484 | cmp [longname_sec2], 0 |
3484 | cmp [longname_sec2], 0 |
3485 | jz .lfndone |
3485 | jz .lfndone |
3486 | push [longname_sec2] |
3486 | push [longname_sec2] |
3487 | push [longname_sec1] |
3487 | push [longname_sec1] |
3488 | pop [longname_sec2] |
3488 | pop [longname_sec2] |
3489 | and [longname_sec1], 0 |
3489 | and [longname_sec1], 0 |
3490 | push ebx |
3490 | push ebx |
3491 | mov ebx, buffer |
3491 | mov ebx, buffer |
3492 | call hd_write |
3492 | call hd_write |
3493 | mov eax, [esp+4] |
3493 | mov eax, [esp+4] |
3494 | call hd_read |
3494 | call hd_read |
3495 | pop ebx |
3495 | pop ebx |
3496 | pop eax |
3496 | pop eax |
3497 | mov edi, buffer+0x200 |
3497 | mov edi, buffer+0x200 |
3498 | @@: |
3498 | @@: |
3499 | sub edi, 0x20 |
3499 | sub edi, 0x20 |
3500 | cmp byte [edi], 0xE5 |
3500 | cmp byte [edi], 0xE5 |
3501 | jz .lfndone |
3501 | jz .lfndone |
3502 | cmp byte [edi+11], 0xF |
3502 | cmp byte [edi+11], 0xF |
3503 | jnz .lfndone |
3503 | jnz .lfndone |
3504 | mov byte [edi], 0xE5 |
3504 | mov byte [edi], 0xE5 |
3505 | jmp .lfndel |
3505 | jmp .lfndel |
3506 | .lfndone: |
3506 | .lfndone: |
3507 | push ebx |
3507 | push ebx |
3508 | mov ebx, buffer |
3508 | mov ebx, buffer |
3509 | call hd_write |
3509 | call hd_write |
3510 | pop ebx |
3510 | pop ebx |
3511 | ; delete FAT chain |
3511 | ; delete FAT chain |
3512 | pop eax |
3512 | pop eax |
3513 | call clear_cluster_chain |
3513 | call clear_cluster_chain |
3514 | call update_disk |
3514 | call update_disk |
3515 | pop edi |
3515 | pop edi |
3516 | xor eax, eax |
3516 | xor eax, eax |
3517 | cmp [hd_error], 0 |
3517 | cmp [hd_error], 0 |
3518 | jz @f |
3518 | jz @f |
3519 | mov al, 11 |
3519 | mov al, 11 |
3520 | @@: |
3520 | @@: |
3521 | ret |
3521 | ret |
3522 | 3522 | ||
3523 | ; \end{diamond}>>=>=>>>> |
3523 | ; \end{diamond}>>=>=>>>> |