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1 | $Revision: 425 $ |
1 | $Revision: 431 $ |
2 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
- | 3 | ;; ;; |
|
- | 4 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
|
- | 5 | ;; Distributed under terms of the GNU General Public License ;; |
|
3 | ;; ;; |
6 | ;; ;; |
4 | ;; FAT32.INC ;; |
7 | ;; FAT32.INC ;; |
5 | ;; ;; |
8 | ;; ;; |
6 | ;; FAT16/32 functions for KolibriOS ;; |
9 | ;; FAT16/32 functions for KolibriOS ;; |
7 | ;; ;; |
10 | ;; ;; |
8 | ;; Copyright 2002 Paolo Minazzi, paolo.minazzi@inwind.it ;; |
11 | ;; Copyright 2002 Paolo Minazzi, paolo.minazzi@inwind.it ;; |
9 | ;; ;; |
12 | ;; ;; |
10 | ;; See file COPYING for details ;; |
13 | ;; See file COPYING for details ;; |
11 | ;; 04.02.2007 LFN create folder - diamond ;; |
14 | ;; 04.02.2007 LFN create folder - diamond ;; |
12 | ;; 08.10.2006 LFN delete file/folder - diamond ;; |
15 | ;; 08.10.2006 LFN delete file/folder - diamond ;; |
13 | ;; 20.08.2006 LFN set file size (truncate/extend) - diamond ;; |
16 | ;; 20.08.2006 LFN set file size (truncate/extend) - diamond ;; |
14 | ;; 17.08.2006 LFN write/append to file - diamond ;; |
17 | ;; 17.08.2006 LFN write/append to file - diamond ;; |
15 | ;; 23.06.2006 LFN start application - diamond ;; |
18 | ;; 23.06.2006 LFN start application - diamond ;; |
16 | ;; 15.06.2006 LFN get/set file/folder info - diamond ;; |
19 | ;; 15.06.2006 LFN get/set file/folder info - diamond ;; |
17 | ;; 27.05.2006 LFN create/rewrite file - diamond ;; |
20 | ;; 27.05.2006 LFN create/rewrite file - diamond ;; |
18 | ;; 04.05.2006 LFN read folder - diamond ;; |
21 | ;; 04.05.2006 LFN read folder - diamond ;; |
19 | ;; 29.04.2006 Elimination of hangup after the ;; |
22 | ;; 29.04.2006 Elimination of hangup after the ;; |
20 | ;; expiration hd_wait_timeout - Mario79 ;; |
23 | ;; expiration hd_wait_timeout - Mario79 ;; |
21 | ;; 23.04.2006 LFN read file - diamond ;; |
24 | ;; 23.04.2006 LFN read file - diamond ;; |
22 | ;; 28.01.2006 find all Fat16/32 partition in all input point ;; |
25 | ;; 28.01.2006 find all Fat16/32 partition in all input point ;; |
23 | ;; to MBR, see file part_set.inc - Mario79 ;; |
26 | ;; to MBR, see file part_set.inc - Mario79 ;; |
24 | ;; 15.01.2005 get file size/attr/date, file_append - ATV ;; |
27 | ;; 15.01.2005 get file size/attr/date, file_append - ATV ;; |
25 | ;; 04.12.2004 skip volume label, file delete bug fixed - ATV ;; |
28 | ;; 04.12.2004 skip volume label, file delete bug fixed - ATV ;; |
26 | ;; 29.11.2004 get_free_FAT changed, append dir bug fixed - ATV ;; |
29 | ;; 29.11.2004 get_free_FAT changed, append dir bug fixed - ATV ;; |
27 | ;; 23.11.2004 don't allow overwrite dir with file - ATV ;; |
30 | ;; 23.11.2004 don't allow overwrite dir with file - ATV ;; |
28 | ;; 18.11.2004 get_disk_info and more error codes - ATV ;; |
31 | ;; 18.11.2004 get_disk_info and more error codes - ATV ;; |
29 | ;; 17.11.2004 set_FAT/get_FAT and disk cache rewritten - ATV ;; |
32 | ;; 17.11.2004 set_FAT/get_FAT and disk cache rewritten - ATV ;; |
30 | ;; 10.11.2004 removedir clear whole directory structure - ATV ;; |
33 | ;; 10.11.2004 removedir clear whole directory structure - ATV ;; |
31 | ;; 08.11.2004 rename - ATV ;; |
34 | ;; 08.11.2004 rename - ATV ;; |
32 | ;; 30.10.2004 file_read return also dirsize in bytes - ATV ;; |
35 | ;; 30.10.2004 file_read return also dirsize in bytes - ATV ;; |
33 | ;; 20.10.2004 Makedir/Removedir - ATV ;; |
36 | ;; 20.10.2004 Makedir/Removedir - ATV ;; |
34 | ;; 14.10.2004 Partition chain/Fat16 - ATV (thanks drh3xx) ;; |
37 | ;; 14.10.2004 Partition chain/Fat16 - ATV (thanks drh3xx) ;; |
35 | ;; 06.9.2004 Fix free space by Mario79 added - MH ;; |
38 | ;; 06.9.2004 Fix free space by Mario79 added - MH ;; |
36 | ;; 24.5.2004 Write back buffer for File_write -VT ;; |
39 | ;; 24.5.2004 Write back buffer for File_write -VT ;; |
37 | ;; 20.5.2004 File_read function to work with syscall 58 - VT ;; |
40 | ;; 20.5.2004 File_read function to work with syscall 58 - VT ;; |
38 | ;; 30.3.2004 Error parameters at function return - VT ;; |
41 | ;; 30.3.2004 Error parameters at function return - VT ;; |
39 | ;; 01.5.2002 Bugfix in device write - VT ;; |
42 | ;; 01.5.2002 Bugfix in device write - VT ;; |
40 | ;; 20.5.2002 Hd status check - VT ;; |
43 | ;; 20.5.2002 Hd status check - VT ;; |
41 | ;; 29.6.2002 Improved fat32 verification - VT ;; |
44 | ;; 29.6.2002 Improved fat32 verification - VT ;; |
42 | ;; ;; |
45 | ;; ;; |
43 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
46 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
44 | 47 | ||
45 | cache_max equ 1919 ; max. is 1919*512+0x610000=0x6ffe00 |
48 | cache_max equ 1919 ; max. is 1919*512+0x610000=0x6ffe00 |
46 | 49 | ||
47 | ERROR_SUCCESS = 0 |
50 | ERROR_SUCCESS = 0 |
48 | ERROR_DISK_BASE = 1 |
51 | ERROR_DISK_BASE = 1 |
49 | ERROR_UNSUPPORTED_FS = 2 |
52 | ERROR_UNSUPPORTED_FS = 2 |
50 | ERROR_UNKNOWN_FS = 3 |
53 | ERROR_UNKNOWN_FS = 3 |
51 | ERROR_PARTITION = 4 |
54 | ERROR_PARTITION = 4 |
52 | ERROR_FILE_NOT_FOUND = 5 |
55 | ERROR_FILE_NOT_FOUND = 5 |
53 | ERROR_END_OF_FILE = 6 |
56 | ERROR_END_OF_FILE = 6 |
54 | ERROR_MEMORY_POINTER = 7 |
57 | ERROR_MEMORY_POINTER = 7 |
55 | ERROR_DISK_FULL = 8 |
58 | ERROR_DISK_FULL = 8 |
56 | ERROR_FAT_TABLE = 9 |
59 | ERROR_FAT_TABLE = 9 |
57 | ERROR_ACCESS_DENIED = 10 |
60 | ERROR_ACCESS_DENIED = 10 |
58 | 61 | ||
59 | PUSHAD_EAX equ [esp+28] |
62 | PUSHAD_EAX equ [esp+28] |
60 | PUSHAD_ECX equ [esp+24] |
63 | PUSHAD_ECX equ [esp+24] |
61 | PUSHAD_EDX equ [esp+20] |
64 | PUSHAD_EDX equ [esp+20] |
62 | PUSHAD_EBX equ [esp+16] |
65 | PUSHAD_EBX equ [esp+16] |
63 | PUSHAD_EBP equ [esp+8] |
66 | PUSHAD_EBP equ [esp+8] |
64 | PUSHAD_ESI equ [esp+4] |
67 | PUSHAD_ESI equ [esp+4] |
65 | PUSHAD_EDI equ [esp+0] |
68 | PUSHAD_EDI equ [esp+0] |
66 | 69 | ||
67 | uglobal |
70 | uglobal |
68 | align 4 |
71 | align 4 |
69 | cluster dd 0 ; used by file_write,makedir,append |
72 | cluster dd 0 ; used by file_write,makedir,append |
70 | partition_count dd 0 ; partitions found by set_FAT32_variables |
73 | partition_count dd 0 ; partitions found by set_FAT32_variables |
71 | longname_sec1 dd 0 ; used by analyze_directory to save 2 previous |
74 | longname_sec1 dd 0 ; used by analyze_directory to save 2 previous |
72 | longname_sec2 dd 0 ; directory sectors for delete long filename |
75 | longname_sec2 dd 0 ; directory sectors for delete long filename |
73 | 76 | ||
74 | hd_error dd 0 ; set by wait_for_sector_buffer |
77 | hd_error dd 0 ; set by wait_for_sector_buffer |
75 | hd_setup dd 0 |
78 | hd_setup dd 0 |
76 | hd_wait_timeout dd 0 |
79 | hd_wait_timeout dd 0 |
77 | 80 | ||
78 | cluster_tmp dd 0 ; used by analyze_directory |
81 | cluster_tmp dd 0 ; used by analyze_directory |
79 | ; and analyze_directory_to_write |
82 | ; and analyze_directory_to_write |
80 | 83 | ||
81 | file_size dd 0 ; used by file_read |
84 | file_size dd 0 ; used by file_read |
82 | 85 | ||
83 | sector_tmp dd 0 ; used by rename,append,file_write |
86 | sector_tmp dd 0 ; used by rename,append,file_write |
84 | entry_pos dd 0 ; used by rename,append,file_write |
87 | entry_pos dd 0 ; used by rename,append,file_write |
85 | 88 | ||
86 | old_filesize dd 0 ; used by append |
89 | old_filesize dd 0 ; used by append |
87 | new_filepos dd 0 ; used by append |
90 | new_filepos dd 0 ; used by append |
88 | bytes2write dd 0 ; used by append |
91 | bytes2write dd 0 ; used by append |
89 | 92 | ||
90 | cache_search_start dd 0 ; used by find_empty_slot |
93 | cache_search_start dd 0 ; used by find_empty_slot |
91 | endg |
94 | endg |
92 | 95 | ||
93 | iglobal |
96 | iglobal |
94 | fat_in_cache dd -1 |
97 | fat_in_cache dd -1 |
95 | endg |
98 | endg |
96 | 99 | ||
97 | uglobal |
100 | uglobal |
98 | align 4 |
101 | align 4 |
99 | fat_cache: times 512 db 0 |
102 | fat_cache: times 512 db 0 |
100 | Sector512: ; label for dev_hdcd.inc |
103 | Sector512: ; label for dev_hdcd.inc |
101 | buffer: times 512 db 0 |
104 | buffer: times 512 db 0 |
102 | fsinfo_buffer: times 512 db 0 |
105 | fsinfo_buffer: times 512 db 0 |
103 | endg |
106 | endg |
104 | 107 | ||
105 | uglobal |
108 | uglobal |
106 | dir_entry: times 32 db 0 |
109 | dir_entry: times 32 db 0 |
107 | 110 | ||
108 | startpath: times 255 db 0 |
111 | startpath: times 255 db 0 |
109 | 112 | ||
110 | fat16_root db 0 ; flag for fat16 rootdir |
113 | fat16_root db 0 ; flag for fat16 rootdir |
111 | fat_change db 0 ; 1=fat has changed |
114 | fat_change db 0 ; 1=fat has changed |
112 | 115 | ||
113 | endg |
116 | endg |
114 | 117 | ||
115 | reserve_hd1: |
118 | reserve_hd1: |
116 | 119 | ||
117 | cli |
120 | cli |
118 | cmp [hd1_status],0 |
121 | cmp [hd1_status],0 |
119 | je reserve_ok1 |
122 | je reserve_ok1 |
120 | 123 | ||
121 | sti |
124 | sti |
122 | call change_task |
125 | call change_task |
123 | jmp reserve_hd1 |
126 | jmp reserve_hd1 |
124 | 127 | ||
125 | reserve_ok1: |
128 | reserve_ok1: |
126 | 129 | ||
127 | push eax |
130 | push eax |
128 | mov eax,[CURRENT_TASK] |
131 | mov eax,[CURRENT_TASK] |
129 | shl eax,5 |
132 | shl eax,5 |
130 | mov eax,[eax+CURRENT_TASK+TASKDATA.pid] |
133 | mov eax,[eax+CURRENT_TASK+TASKDATA.pid] |
131 | mov [hd1_status],eax |
134 | mov [hd1_status],eax |
132 | pop eax |
135 | pop eax |
133 | sti |
136 | sti |
134 | ret |
137 | ret |
135 | ;******************************************** |
138 | ;******************************************** |
136 | 139 | ||
137 | uglobal |
140 | uglobal |
138 | hd_in_cache db ? |
141 | hd_in_cache db ? |
139 | endg |
142 | endg |
140 | 143 | ||
141 | reserve_hd_channel: |
144 | reserve_hd_channel: |
142 | cmp [hdbase], 0x1F0 |
145 | cmp [hdbase], 0x1F0 |
143 | jne .IDE_Channel_2 |
146 | jne .IDE_Channel_2 |
144 | .IDE_Channel_1: |
147 | .IDE_Channel_1: |
145 | cli |
148 | cli |
146 | cmp [IDE_Channel_1],0 |
149 | cmp [IDE_Channel_1],0 |
147 | je .reserve_ok_1 |
150 | je .reserve_ok_1 |
148 | sti |
151 | sti |
149 | call change_task |
152 | call change_task |
150 | jmp .IDE_Channel_1 |
153 | jmp .IDE_Channel_1 |
151 | .IDE_Channel_2: |
154 | .IDE_Channel_2: |
152 | cli |
155 | cli |
153 | cmp [IDE_Channel_2],0 |
156 | cmp [IDE_Channel_2],0 |
154 | je .reserve_ok_2 |
157 | je .reserve_ok_2 |
155 | sti |
158 | sti |
156 | call change_task |
159 | call change_task |
157 | jmp .IDE_Channel_2 |
160 | jmp .IDE_Channel_2 |
158 | .reserve_ok_1: |
161 | .reserve_ok_1: |
159 | mov [IDE_Channel_1], 1 |
162 | mov [IDE_Channel_1], 1 |
160 | push eax |
163 | push eax |
161 | mov al, 1 |
164 | mov al, 1 |
162 | jmp @f |
165 | jmp @f |
163 | .reserve_ok_2: |
166 | .reserve_ok_2: |
164 | mov [IDE_Channel_2], 1 |
167 | mov [IDE_Channel_2], 1 |
165 | push eax |
168 | push eax |
166 | mov al, 3 |
169 | mov al, 3 |
167 | @@: |
170 | @@: |
168 | cmp [hdid], 1 |
171 | cmp [hdid], 1 |
169 | sbb al, -1 |
172 | sbb al, -1 |
170 | cmp al, [hd_in_cache] |
173 | cmp al, [hd_in_cache] |
171 | jz @f |
174 | jz @f |
172 | mov [hd_in_cache], al |
175 | mov [hd_in_cache], al |
173 | call clear_hd_cache |
176 | call clear_hd_cache |
174 | @@: |
177 | @@: |
175 | pop eax |
178 | pop eax |
176 | ret |
179 | ret |
177 | 180 | ||
178 | free_hd_channel: |
181 | free_hd_channel: |
179 | cmp [hdbase], 0x1F0 |
182 | cmp [hdbase], 0x1F0 |
180 | jne .IDE_Channel_2 |
183 | jne .IDE_Channel_2 |
181 | .IDE_Channel_1: |
184 | .IDE_Channel_1: |
182 | mov [IDE_Channel_1],0 |
185 | mov [IDE_Channel_1],0 |
183 | ret |
186 | ret |
184 | .IDE_Channel_2: |
187 | .IDE_Channel_2: |
185 | mov [IDE_Channel_2],0 |
188 | mov [IDE_Channel_2],0 |
186 | ret |
189 | ret |
187 | ;******************************************** |
190 | ;******************************************** |
188 | problem_partition db 0 ; used for partitions search |
191 | problem_partition db 0 ; used for partitions search |
189 | 192 | ||
190 | include 'part_set.inc' |
193 | include 'part_set.inc' |
191 | 194 | ||
192 | set_FAT: |
195 | set_FAT: |
193 | ;-------------------------------- |
196 | ;-------------------------------- |
194 | ; input : EAX = cluster |
197 | ; input : EAX = cluster |
195 | ; EDX = value to save |
198 | ; EDX = value to save |
196 | ; output : EDX = old value |
199 | ; output : EDX = old value |
197 | ;-------------------------------- |
200 | ;-------------------------------- |
198 | push eax ebx esi |
201 | push eax ebx esi |
199 | 202 | ||
200 | cmp eax,2 |
203 | cmp eax,2 |
201 | jb sfc_error |
204 | jb sfc_error |
202 | cmp eax,[LAST_CLUSTER] |
205 | cmp eax,[LAST_CLUSTER] |
203 | ja sfc_error |
206 | ja sfc_error |
204 | cmp [fs_type],16 |
207 | cmp [fs_type],16 |
205 | je sfc_1 |
208 | je sfc_1 |
206 | add eax,eax |
209 | add eax,eax |
207 | sfc_1: |
210 | sfc_1: |
208 | add eax,eax |
211 | add eax,eax |
209 | mov esi,511 |
212 | mov esi,511 |
210 | and esi,eax ; esi = position in fat sector |
213 | and esi,eax ; esi = position in fat sector |
211 | shr eax,9 ; eax = fat sector |
214 | shr eax,9 ; eax = fat sector |
212 | add eax,[FAT_START] |
215 | add eax,[FAT_START] |
213 | mov ebx,fat_cache |
216 | mov ebx,fat_cache |
214 | 217 | ||
215 | cmp eax,[fat_in_cache] ; is fat sector already in memory? |
218 | cmp eax,[fat_in_cache] ; is fat sector already in memory? |
216 | je sfc_in_cache ; yes |
219 | je sfc_in_cache ; yes |
217 | 220 | ||
218 | cmp [fat_change],0 ; is fat changed? |
221 | cmp [fat_change],0 ; is fat changed? |
219 | je sfc_no_change ; no |
222 | je sfc_no_change ; no |
220 | call write_fat_sector ; yes. write it into disk |
223 | call write_fat_sector ; yes. write it into disk |
221 | cmp [hd_error],0 |
224 | cmp [hd_error],0 |
222 | jne sfc_error |
225 | jne sfc_error |
223 | 226 | ||
224 | sfc_no_change: |
227 | sfc_no_change: |
225 | mov [fat_in_cache],eax ; save fat sector |
228 | mov [fat_in_cache],eax ; save fat sector |
226 | call hd_read |
229 | call hd_read |
227 | cmp [hd_error],0 |
230 | cmp [hd_error],0 |
228 | jne sfc_error |
231 | jne sfc_error |
229 | 232 | ||
230 | 233 | ||
231 | sfc_in_cache: |
234 | sfc_in_cache: |
232 | cmp [fs_type],16 |
235 | cmp [fs_type],16 |
233 | jne sfc_test32 |
236 | jne sfc_test32 |
234 | 237 | ||
235 | sfc_set16: |
238 | sfc_set16: |
236 | xchg [ebx+esi],dx ; save new value and get old value |
239 | xchg [ebx+esi],dx ; save new value and get old value |
237 | jmp sfc_write |
240 | jmp sfc_write |
238 | 241 | ||
239 | sfc_test32: |
242 | sfc_test32: |
240 | mov eax,[fatMASK] |
243 | mov eax,[fatMASK] |
241 | 244 | ||
242 | sfc_set32: |
245 | sfc_set32: |
243 | and edx,eax |
246 | and edx,eax |
244 | xor eax,-1 ; mask for high bits |
247 | xor eax,-1 ; mask for high bits |
245 | and eax,[ebx+esi] ; get high 4 bits |
248 | and eax,[ebx+esi] ; get high 4 bits |
246 | or eax,edx |
249 | or eax,edx |
247 | mov edx,[ebx+esi] ; get old value |
250 | mov edx,[ebx+esi] ; get old value |
248 | mov [ebx+esi],eax ; save new value |
251 | mov [ebx+esi],eax ; save new value |
249 | 252 | ||
250 | sfc_write: |
253 | sfc_write: |
251 | mov [fat_change],1 ; fat has changed |
254 | mov [fat_change],1 ; fat has changed |
252 | 255 | ||
253 | sfc_nonzero: |
256 | sfc_nonzero: |
254 | and edx,[fatMASK] |
257 | and edx,[fatMASK] |
255 | 258 | ||
256 | sfc_error: |
259 | sfc_error: |
257 | pop esi ebx eax |
260 | pop esi ebx eax |
258 | ret |
261 | ret |
259 | 262 | ||
260 | 263 | ||
261 | get_FAT: |
264 | get_FAT: |
262 | ;-------------------------------- |
265 | ;-------------------------------- |
263 | ; input : EAX = cluster |
266 | ; input : EAX = cluster |
264 | ; output : EAX = next cluster |
267 | ; output : EAX = next cluster |
265 | ;-------------------------------- |
268 | ;-------------------------------- |
266 | push ebx esi |
269 | push ebx esi |
267 | 270 | ||
268 | cmp [fs_type],16 |
271 | cmp [fs_type],16 |
269 | je gfc_1 |
272 | je gfc_1 |
270 | add eax,eax |
273 | add eax,eax |
271 | gfc_1: |
274 | gfc_1: |
272 | add eax,eax |
275 | add eax,eax |
273 | mov esi,511 |
276 | mov esi,511 |
274 | and esi,eax ; esi = position in fat sector |
277 | and esi,eax ; esi = position in fat sector |
275 | shr eax,9 ; eax = fat sector |
278 | shr eax,9 ; eax = fat sector |
276 | add eax,[FAT_START] |
279 | add eax,[FAT_START] |
277 | mov ebx,fat_cache |
280 | mov ebx,fat_cache |
278 | 281 | ||
279 | cmp eax,[fat_in_cache] ; is fat sector already in memory? |
282 | cmp eax,[fat_in_cache] ; is fat sector already in memory? |
280 | je gfc_in_cache |
283 | je gfc_in_cache |
281 | 284 | ||
282 | cmp [fat_change],0 ; is fat changed? |
285 | cmp [fat_change],0 ; is fat changed? |
283 | je gfc_no_change ; no |
286 | je gfc_no_change ; no |
284 | call write_fat_sector ; yes. write it into disk |
287 | call write_fat_sector ; yes. write it into disk |
285 | cmp [hd_error],0 |
288 | cmp [hd_error],0 |
286 | jne hd_error_01 |
289 | jne hd_error_01 |
287 | 290 | ||
288 | gfc_no_change: |
291 | gfc_no_change: |
289 | mov [fat_in_cache],eax |
292 | mov [fat_in_cache],eax |
290 | call hd_read |
293 | call hd_read |
291 | cmp [hd_error],0 |
294 | cmp [hd_error],0 |
292 | jne hd_error_01 |
295 | jne hd_error_01 |
293 | 296 | ||
294 | gfc_in_cache: |
297 | gfc_in_cache: |
295 | mov eax,[ebx+esi] |
298 | mov eax,[ebx+esi] |
296 | and eax,[fatMASK] |
299 | and eax,[fatMASK] |
297 | hd_error_01: |
300 | hd_error_01: |
298 | pop esi ebx |
301 | pop esi ebx |
299 | ret |
302 | ret |
300 | 303 | ||
301 | 304 | ||
302 | get_free_FAT: |
305 | get_free_FAT: |
303 | ;----------------------------------------------------------- |
306 | ;----------------------------------------------------------- |
304 | ; input : EAX = # cluster for start the searching |
307 | ; input : EAX = # cluster for start the searching |
305 | ; output : if CARRY=0 EAX = # first cluster found free |
308 | ; output : if CARRY=0 EAX = # first cluster found free |
306 | ; if CARRY=1 disk full |
309 | ; if CARRY=1 disk full |
307 | ; Note : for more speed need to use fat_cache directly |
310 | ; Note : for more speed need to use fat_cache directly |
308 | ;----------------------------------------------------------- |
311 | ;----------------------------------------------------------- |
309 | push ecx |
312 | push ecx |
310 | mov ecx,[LAST_CLUSTER] ; counter for full disk |
313 | mov ecx,[LAST_CLUSTER] ; counter for full disk |
311 | sub ecx,2 |
314 | sub ecx,2 |
312 | 315 | ||
313 | gff_test: |
316 | gff_test: |
314 | cmp eax,[LAST_CLUSTER] ; if above last cluster start at cluster 2 |
317 | cmp eax,[LAST_CLUSTER] ; if above last cluster start at cluster 2 |
315 | jbe gff_in_range |
318 | jbe gff_in_range |
316 | mov eax,2 |
319 | mov eax,2 |
317 | 320 | ||
318 | gff_in_range: |
321 | gff_in_range: |
319 | push eax |
322 | push eax |
320 | call get_FAT ; get cluster state |
323 | call get_FAT ; get cluster state |
321 | cmp [hd_error],0 |
324 | cmp [hd_error],0 |
322 | jne gff_not_found_1 |
325 | jne gff_not_found_1 |
323 | 326 | ||
324 | test eax,eax ; is it free? |
327 | test eax,eax ; is it free? |
325 | pop eax |
328 | pop eax |
326 | je gff_found ; yes |
329 | je gff_found ; yes |
327 | inc eax ; next cluster |
330 | inc eax ; next cluster |
328 | dec ecx ; is all checked? |
331 | dec ecx ; is all checked? |
329 | jns gff_test ; no |
332 | jns gff_test ; no |
330 | 333 | ||
331 | gff_not_found_1: |
334 | gff_not_found_1: |
332 | add esp,4 |
335 | add esp,4 |
333 | gff_not_found: |
336 | gff_not_found: |
334 | pop ecx ; yes. disk is full |
337 | pop ecx ; yes. disk is full |
335 | stc |
338 | stc |
336 | ret |
339 | ret |
337 | 340 | ||
338 | gff_found: |
341 | gff_found: |
339 | pop ecx |
342 | pop ecx |
340 | clc |
343 | clc |
341 | ret |
344 | ret |
342 | 345 | ||
343 | 346 | ||
344 | write_fat_sector: |
347 | write_fat_sector: |
345 | ;----------------------------------------------------------- |
348 | ;----------------------------------------------------------- |
346 | ; write changed fat to disk |
349 | ; write changed fat to disk |
347 | ;----------------------------------------------------------- |
350 | ;----------------------------------------------------------- |
348 | push eax ebx ecx |
351 | push eax ebx ecx |
349 | 352 | ||
350 | mov [fat_change],0 |
353 | mov [fat_change],0 |
351 | mov eax,[fat_in_cache] |
354 | mov eax,[fat_in_cache] |
352 | cmp eax,-1 |
355 | cmp eax,-1 |
353 | jz write_fat_not_used |
356 | jz write_fat_not_used |
354 | mov ebx,fat_cache |
357 | mov ebx,fat_cache |
355 | mov ecx,[NUMBER_OF_FATS] |
358 | mov ecx,[NUMBER_OF_FATS] |
356 | 359 | ||
357 | write_next_fat: |
360 | write_next_fat: |
358 | call hd_write |
361 | call hd_write |
359 | cmp [hd_error],0 |
362 | cmp [hd_error],0 |
360 | jne write_fat_not_used |
363 | jne write_fat_not_used |
361 | 364 | ||
362 | add eax,[SECTORS_PER_FAT] |
365 | add eax,[SECTORS_PER_FAT] |
363 | dec ecx |
366 | dec ecx |
364 | jnz write_next_fat |
367 | jnz write_next_fat |
365 | 368 | ||
366 | write_fat_not_used: |
369 | write_fat_not_used: |
367 | pop ecx ebx eax |
370 | pop ecx ebx eax |
368 | ret |
371 | ret |
369 | 372 | ||
370 | 373 | ||
371 | analyze_directory: |
374 | analyze_directory: |
372 | ;----------------------------------------------------------- |
375 | ;----------------------------------------------------------- |
373 | ; input : EAX = first cluster of the directory |
376 | ; input : EAX = first cluster of the directory |
374 | ; EBX = pointer to filename |
377 | ; EBX = pointer to filename |
375 | ; output : IF CARRY=0 EAX = sector where th file is found |
378 | ; output : IF CARRY=0 EAX = sector where th file is found |
376 | ; EBX = pointer in buffer |
379 | ; EBX = pointer in buffer |
377 | ; [buffer .. buffer+511] |
380 | ; [buffer .. buffer+511] |
378 | ; ECX,EDX,ESI,EDI not changed |
381 | ; ECX,EDX,ESI,EDI not changed |
379 | ; IF CARRY=1 filename not found |
382 | ; IF CARRY=1 filename not found |
380 | ; Note : if cluster=0 it's changed to read rootdir |
383 | ; Note : if cluster=0 it's changed to read rootdir |
381 | ; save 2 previous directory sectors in longname_sec |
384 | ; save 2 previous directory sectors in longname_sec |
382 | ;----------------------------------------------------------- |
385 | ;----------------------------------------------------------- |
383 | push ecx edx esi edi ebx ; ebx = [esp+0] |
386 | push ecx edx esi edi ebx ; ebx = [esp+0] |
384 | mov [longname_sec1],0 |
387 | mov [longname_sec1],0 |
385 | mov [longname_sec2],0 |
388 | mov [longname_sec2],0 |
386 | 389 | ||
387 | adr_new_cluster: |
390 | adr_new_cluster: |
388 | mov [cluster_tmp],eax |
391 | mov [cluster_tmp],eax |
389 | mov [fat16_root],0 |
392 | mov [fat16_root],0 |
390 | cmp eax,[LAST_CLUSTER] |
393 | cmp eax,[LAST_CLUSTER] |
391 | ja adr_not_found ; too big cluster number, something is wrong |
394 | ja adr_not_found ; too big cluster number, something is wrong |
392 | cmp eax,2 |
395 | cmp eax,2 |
393 | jnb adr_data_cluster |
396 | jnb adr_data_cluster |
394 | 397 | ||
395 | mov eax,[ROOT_CLUSTER] ; if cluster < 2 then read rootdir |
398 | mov eax,[ROOT_CLUSTER] ; if cluster < 2 then read rootdir |
396 | cmp [fs_type],16 |
399 | cmp [fs_type],16 |
397 | jne adr_data_cluster |
400 | jne adr_data_cluster |
398 | mov eax,[ROOT_START] |
401 | mov eax,[ROOT_START] |
399 | mov edx,[ROOT_SECTORS] |
402 | mov edx,[ROOT_SECTORS] |
400 | mov [fat16_root],1 ; flag for fat16 rootdir |
403 | mov [fat16_root],1 ; flag for fat16 rootdir |
401 | jmp adr_new_sector |
404 | jmp adr_new_sector |
402 | 405 | ||
403 | adr_data_cluster: |
406 | adr_data_cluster: |
404 | sub eax,2 |
407 | sub eax,2 |
405 | mov edx,[SECTORS_PER_CLUSTER] |
408 | mov edx,[SECTORS_PER_CLUSTER] |
406 | imul eax,edx |
409 | imul eax,edx |
407 | add eax,[DATA_START] |
410 | add eax,[DATA_START] |
408 | 411 | ||
409 | adr_new_sector: |
412 | adr_new_sector: |
410 | mov ebx,buffer |
413 | mov ebx,buffer |
411 | call hd_read |
414 | call hd_read |
412 | cmp [hd_error],0 |
415 | cmp [hd_error],0 |
413 | jne adr_not_found |
416 | jne adr_not_found |
414 | 417 | ||
415 | mov ecx,512/32 ; count of dir entrys per sector = 16 |
418 | mov ecx,512/32 ; count of dir entrys per sector = 16 |
416 | 419 | ||
417 | adr_analyze: |
420 | adr_analyze: |
418 | mov edi,[ebx+11] ; file attribute |
421 | mov edi,[ebx+11] ; file attribute |
419 | and edi,0xf |
422 | and edi,0xf |
420 | cmp edi,0xf |
423 | cmp edi,0xf |
421 | je adr_long_filename |
424 | je adr_long_filename |
422 | test edi,0x8 ; skip over volume label |
425 | test edi,0x8 ; skip over volume label |
423 | jne adr_long_filename ; Note: label can be same name as file/dir |
426 | jne adr_long_filename ; Note: label can be same name as file/dir |
424 | 427 | ||
425 | mov esi,[esp+0] ; filename need to be uppercase |
428 | mov esi,[esp+0] ; filename need to be uppercase |
426 | mov edi,ebx |
429 | mov edi,ebx |
427 | push ecx |
430 | push ecx |
428 | mov ecx,11 |
431 | mov ecx,11 |
429 | cld |
432 | cld |
430 | rep cmpsb ; compare 8+3 filename |
433 | rep cmpsb ; compare 8+3 filename |
431 | pop ecx |
434 | pop ecx |
432 | je adr_found |
435 | je adr_found |
433 | 436 | ||
434 | adr_long_filename: |
437 | adr_long_filename: |
435 | add ebx,32 ; position of next dir entry |
438 | add ebx,32 ; position of next dir entry |
436 | dec ecx |
439 | dec ecx |
437 | jnz adr_analyze |
440 | jnz adr_analyze |
438 | 441 | ||
439 | mov ecx,[longname_sec1] ; save 2 previous directory sectors |
442 | mov ecx,[longname_sec1] ; save 2 previous directory sectors |
440 | mov [longname_sec1],eax ; for delete long filename |
443 | mov [longname_sec1],eax ; for delete long filename |
441 | mov [longname_sec2],ecx |
444 | mov [longname_sec2],ecx |
442 | inc eax ; next sector |
445 | inc eax ; next sector |
443 | dec edx |
446 | dec edx |
444 | jne adr_new_sector |
447 | jne adr_new_sector |
445 | cmp [fat16_root],1 ; end of fat16 rootdir |
448 | cmp [fat16_root],1 ; end of fat16 rootdir |
446 | je adr_not_found |
449 | je adr_not_found |
447 | 450 | ||
448 | adr_next_cluster: |
451 | adr_next_cluster: |
449 | mov eax,[cluster_tmp] |
452 | mov eax,[cluster_tmp] |
450 | call get_FAT ; get next cluster |
453 | call get_FAT ; get next cluster |
451 | cmp [hd_error],0 |
454 | cmp [hd_error],0 |
452 | jne adr_not_found |
455 | jne adr_not_found |
453 | 456 | ||
454 | cmp eax,2 ; incorrect fat chain? |
457 | cmp eax,2 ; incorrect fat chain? |
455 | jb adr_not_found ; yes |
458 | jb adr_not_found ; yes |
456 | cmp eax,[fatRESERVED] ; is it end of directory? |
459 | cmp eax,[fatRESERVED] ; is it end of directory? |
457 | jb adr_new_cluster ; no. analyse it |
460 | jb adr_new_cluster ; no. analyse it |
458 | 461 | ||
459 | adr_not_found: |
462 | adr_not_found: |
460 | pop edi edi esi edx ecx ; first edi will remove ebx |
463 | pop edi edi esi edx ecx ; first edi will remove ebx |
461 | stc ; file not found |
464 | stc ; file not found |
462 | ret |
465 | ret |
463 | 466 | ||
464 | adr_found: |
467 | adr_found: |
465 | pop edi edi esi edx ecx ; first edi will remove ebx |
468 | pop edi edi esi edx ecx ; first edi will remove ebx |
466 | clc ; file found |
469 | clc ; file found |
467 | ret |
470 | ret |
468 | 471 | ||
469 | 472 | ||
470 | analyze_directory_to_write: |
473 | analyze_directory_to_write: |
471 | ;----------------------------------------------------------- |
474 | ;----------------------------------------------------------- |
472 | ; input : EAX = first cluster of the directory |
475 | ; input : EAX = first cluster of the directory |
473 | ; output : IF CARRY=0 EAX = sector where the empty pos is found |
476 | ; output : IF CARRY=0 EAX = sector where the empty pos is found |
474 | ; EBX = pointer in buffer |
477 | ; EBX = pointer in buffer |
475 | ; [buffer .. buffer+511] |
478 | ; [buffer .. buffer+511] |
476 | ; ECX,EDX,ESI,EDI not changed |
479 | ; ECX,EDX,ESI,EDI not changed |
477 | ; IF CARRY=1 disk full or fat corrupted |
480 | ; IF CARRY=1 disk full or fat corrupted |
478 | ; Note : if cluster=0 it's changed to read rootdir |
481 | ; Note : if cluster=0 it's changed to read rootdir |
479 | ;----------------------------------------------------------- |
482 | ;----------------------------------------------------------- |
480 | push ecx edx edi |
483 | push ecx edx edi |
481 | 484 | ||
482 | adw_new_cluster: |
485 | adw_new_cluster: |
483 | mov [cluster_tmp],eax |
486 | mov [cluster_tmp],eax |
484 | mov [fat16_root],0 |
487 | mov [fat16_root],0 |
485 | cmp eax,[LAST_CLUSTER] |
488 | cmp eax,[LAST_CLUSTER] |
486 | ja adw_not_found ; too big cluster number, something is wrong |
489 | ja adw_not_found ; too big cluster number, something is wrong |
487 | cmp eax,2 |
490 | cmp eax,2 |
488 | jnb adw_data_cluster |
491 | jnb adw_data_cluster |
489 | 492 | ||
490 | mov eax,[ROOT_CLUSTER] ; if cluster < 2 then read rootdir |
493 | mov eax,[ROOT_CLUSTER] ; if cluster < 2 then read rootdir |
491 | cmp [fs_type],16 |
494 | cmp [fs_type],16 |
492 | jne adw_data_cluster |
495 | jne adw_data_cluster |
493 | mov eax,[ROOT_START] |
496 | mov eax,[ROOT_START] |
494 | mov edx,[ROOT_SECTORS] |
497 | mov edx,[ROOT_SECTORS] |
495 | mov [fat16_root],1 ; flag for fat16 rootdir |
498 | mov [fat16_root],1 ; flag for fat16 rootdir |
496 | jmp adw_new_sector |
499 | jmp adw_new_sector |
497 | 500 | ||
498 | adw_data_cluster: |
501 | adw_data_cluster: |
499 | sub eax,2 |
502 | sub eax,2 |
500 | mov edx,[SECTORS_PER_CLUSTER] |
503 | mov edx,[SECTORS_PER_CLUSTER] |
501 | imul eax,edx |
504 | imul eax,edx |
502 | add eax,[DATA_START] |
505 | add eax,[DATA_START] |
503 | 506 | ||
504 | adw_new_sector: |
507 | adw_new_sector: |
505 | mov ebx,buffer |
508 | mov ebx,buffer |
506 | call hd_read |
509 | call hd_read |
507 | cmp [hd_error],0 |
510 | cmp [hd_error],0 |
508 | jne adw_not_found |
511 | jne adw_not_found |
509 | 512 | ||
510 | mov ecx,512/32 ; count of dir entrys per sector = 16 |
513 | mov ecx,512/32 ; count of dir entrys per sector = 16 |
511 | 514 | ||
512 | adw_analyze: |
515 | adw_analyze: |
513 | cmp byte [ebx],0x00 ; is free entry? |
516 | cmp byte [ebx],0x00 ; is free entry? |
514 | je adw_found ; yes |
517 | je adw_found ; yes |
515 | cmp byte [ebx],0xe5 ; is deleted entry? |
518 | cmp byte [ebx],0xe5 ; is deleted entry? |
516 | je adw_found ; yes |
519 | je adw_found ; yes |
517 | add ebx,32 ; position of next dir entry |
520 | add ebx,32 ; position of next dir entry |
518 | dec ecx |
521 | dec ecx |
519 | jnz adw_analyze |
522 | jnz adw_analyze |
520 | 523 | ||
521 | inc eax ; next sector |
524 | inc eax ; next sector |
522 | dec edx |
525 | dec edx |
523 | jne adw_new_sector |
526 | jne adw_new_sector |
524 | cmp [fat16_root],1 ; end of fat16 rootdir |
527 | cmp [fat16_root],1 ; end of fat16 rootdir |
525 | je adw_not_found |
528 | je adw_not_found |
526 | 529 | ||
527 | mov eax,[cluster_tmp] |
530 | mov eax,[cluster_tmp] |
528 | call get_FAT ; get next cluster |
531 | call get_FAT ; get next cluster |
529 | cmp [hd_error],0 |
532 | cmp [hd_error],0 |
530 | jne adw_not_found |
533 | jne adw_not_found |
531 | 534 | ||
532 | cmp eax,2 ; incorrect fat chain? |
535 | cmp eax,2 ; incorrect fat chain? |
533 | jb adw_not_found ; yes |
536 | jb adw_not_found ; yes |
534 | cmp eax,[fatRESERVED] ; is it end of directory? |
537 | cmp eax,[fatRESERVED] ; is it end of directory? |
535 | jb adw_new_cluster ; no. analyse it |
538 | jb adw_new_cluster ; no. analyse it |
536 | 539 | ||
537 | mov eax,2 ; this block of code add a new cluster |
540 | mov eax,2 ; this block of code add a new cluster |
538 | call get_free_FAT ; for the directory because the directory |
541 | call get_free_FAT ; for the directory because the directory |
539 | jc adw_not_found ; is full |
542 | jc adw_not_found ; is full |
540 | 543 | ||
541 | mov edx,[fatEND] ; new end for directory |
544 | mov edx,[fatEND] ; new end for directory |
542 | call set_FAT |
545 | call set_FAT |
543 | cmp [hd_error],0 |
546 | cmp [hd_error],0 |
544 | jne adw_not_found |
547 | jne adw_not_found |
545 | 548 | ||
546 | push eax ; save new cluster |
549 | push eax ; save new cluster |
547 | mov edx,eax |
550 | mov edx,eax |
548 | mov eax,[cluster_tmp] ; change last cluster to point new cluster |
551 | mov eax,[cluster_tmp] ; change last cluster to point new cluster |
549 | call set_FAT |
552 | call set_FAT |
550 | cmp [hd_error],0 |
553 | cmp [hd_error],0 |
551 | jne adw_not_found_1 |
554 | jne adw_not_found_1 |
552 | 555 | ||
553 | mov ecx,-1 ; remove 1 cluster from free disk space |
556 | mov ecx,-1 ; remove 1 cluster from free disk space |
554 | call add_disk_free_space |
557 | call add_disk_free_space |
555 | cmp [hd_error],0 |
558 | cmp [hd_error],0 |
556 | jne adw_not_found_1 |
559 | jne adw_not_found_1 |
557 | 560 | ||
558 | mov ecx,512/4 |
561 | mov ecx,512/4 |
559 | xor eax,eax |
562 | xor eax,eax |
560 | mov edi,buffer |
563 | mov edi,buffer |
561 | cld |
564 | cld |
562 | rep stosd ; clear new directory cluster |
565 | rep stosd ; clear new directory cluster |
563 | pop eax |
566 | pop eax |
564 | 567 | ||
565 | sub eax,2 |
568 | sub eax,2 |
566 | mov ecx,[SECTORS_PER_CLUSTER] |
569 | mov ecx,[SECTORS_PER_CLUSTER] |
567 | imul eax,ecx |
570 | imul eax,ecx |
568 | add eax,[DATA_START] |
571 | add eax,[DATA_START] |
569 | mov ebx,buffer |
572 | mov ebx,buffer |
570 | push eax ; save sector number |
573 | push eax ; save sector number |
571 | 574 | ||
572 | adw_set_empty_directory: |
575 | adw_set_empty_directory: |
573 | call hd_write |
576 | call hd_write |
574 | cmp [hd_error],0 |
577 | cmp [hd_error],0 |
575 | jne adw_not_found_1 |
578 | jne adw_not_found_1 |
576 | 579 | ||
577 | inc eax ; next sector |
580 | inc eax ; next sector |
578 | dec ecx |
581 | dec ecx |
579 | jnz adw_set_empty_directory |
582 | jnz adw_set_empty_directory |
580 | 583 | ||
581 | pop eax |
584 | pop eax |
582 | 585 | ||
583 | adw_found: |
586 | adw_found: |
584 | pop edi edx ecx |
587 | pop edi edx ecx |
585 | clc ; free space found |
588 | clc ; free space found |
586 | ret |
589 | ret |
587 | adw_not_found_1: |
590 | adw_not_found_1: |
588 | add esp,4 |
591 | add esp,4 |
589 | adw_not_found: |
592 | adw_not_found: |
590 | pop edi edx ecx |
593 | pop edi edx ecx |
591 | stc ; free space not found |
594 | stc ; free space not found |
592 | ret |
595 | ret |
593 | 596 | ||
594 | 597 | ||
595 | get_data_cluster: |
598 | get_data_cluster: |
596 | ;----------------------------------------------------------- |
599 | ;----------------------------------------------------------- |
597 | ; input : EAX = cluster |
600 | ; input : EAX = cluster |
598 | ; EBX = pointer to buffer |
601 | ; EBX = pointer to buffer |
599 | ; EDX = # blocks to read in buffer |
602 | ; EDX = # blocks to read in buffer |
600 | ; ESI = # blocks to skip over |
603 | ; ESI = # blocks to skip over |
601 | ; output : if CARRY=0 ok EBX/EDX/ESI updated |
604 | ; output : if CARRY=0 ok EBX/EDX/ESI updated |
602 | ; if CARRY=1 cluster out of range |
605 | ; if CARRY=1 cluster out of range |
603 | ; Note : if cluster=0 it's changed to read rootdir |
606 | ; Note : if cluster=0 it's changed to read rootdir |
604 | ;----------------------------------------------------------- |
607 | ;----------------------------------------------------------- |
605 | push eax ecx |
608 | push eax ecx |
606 | 609 | ||
607 | mov [fat16_root],0 |
610 | mov [fat16_root],0 |
608 | cmp eax,[LAST_CLUSTER] |
611 | cmp eax,[LAST_CLUSTER] |
609 | ja gdc_error ; too big cluster number, something is wrong |
612 | ja gdc_error ; too big cluster number, something is wrong |
610 | cmp eax,2 |
613 | cmp eax,2 |
611 | jnb gdc_cluster |
614 | jnb gdc_cluster |
612 | 615 | ||
613 | mov eax,[ROOT_CLUSTER] ; if cluster < 2 then read rootdir |
616 | mov eax,[ROOT_CLUSTER] ; if cluster < 2 then read rootdir |
614 | cmp [fs_type],16 |
617 | cmp [fs_type],16 |
615 | jne gdc_cluster |
618 | jne gdc_cluster |
616 | mov eax,[ROOT_START] |
619 | mov eax,[ROOT_START] |
617 | mov ecx,[ROOT_SECTORS] ; Note: not cluster size |
620 | mov ecx,[ROOT_SECTORS] ; Note: not cluster size |
618 | mov [fat16_root],1 ; flag for fat16 rootdir |
621 | mov [fat16_root],1 ; flag for fat16 rootdir |
619 | jmp gdc_read |
622 | jmp gdc_read |
620 | 623 | ||
621 | gdc_cluster: |
624 | gdc_cluster: |
622 | sub eax,2 |
625 | sub eax,2 |
623 | mov ecx,[SECTORS_PER_CLUSTER] |
626 | mov ecx,[SECTORS_PER_CLUSTER] |
624 | imul eax,ecx |
627 | imul eax,ecx |
625 | add eax,[DATA_START] |
628 | add eax,[DATA_START] |
626 | 629 | ||
627 | gdc_read: |
630 | gdc_read: |
628 | test esi,esi ; first wanted block |
631 | test esi,esi ; first wanted block |
629 | je gdcl1 ; yes, skip count is 0 |
632 | je gdcl1 ; yes, skip count is 0 |
630 | dec esi |
633 | dec esi |
631 | jmp gdcl2 |
634 | jmp gdcl2 |
632 | 635 | ||
633 | gdcl1: |
636 | gdcl1: |
634 | call hd_read |
637 | call hd_read |
635 | cmp [hd_error],0 |
638 | cmp [hd_error],0 |
636 | jne gdc_error |
639 | jne gdc_error |
637 | 640 | ||
638 | add ebx,512 ; update pointer |
641 | add ebx,512 ; update pointer |
639 | dec edx |
642 | dec edx |
640 | 643 | ||
641 | gdcl2: |
644 | gdcl2: |
642 | test edx,edx ; is all read? |
645 | test edx,edx ; is all read? |
643 | je out_of_read |
646 | je out_of_read |
644 | 647 | ||
645 | inc eax ; next sector |
648 | inc eax ; next sector |
646 | dec ecx |
649 | dec ecx |
647 | jnz gdc_read |
650 | jnz gdc_read |
648 | 651 | ||
649 | out_of_read: |
652 | out_of_read: |
650 | pop ecx eax |
653 | pop ecx eax |
651 | clc |
654 | clc |
652 | ret |
655 | ret |
653 | 656 | ||
654 | gdc_error: |
657 | gdc_error: |
655 | pop ecx eax |
658 | pop ecx eax |
656 | stc |
659 | stc |
657 | ret |
660 | ret |
658 | 661 | ||
659 | 662 | ||
660 | set_data_cluster: |
663 | set_data_cluster: |
661 | ;----------------------------------------------------------- |
664 | ;----------------------------------------------------------- |
662 | ; input : EAX = cluster |
665 | ; input : EAX = cluster |
663 | ; EBX = pointer to buffer |
666 | ; EBX = pointer to buffer |
664 | ; output : if CARRY=0 ok |
667 | ; output : if CARRY=0 ok |
665 | ; if CARRY=1 cluster out of range |
668 | ; if CARRY=1 cluster out of range |
666 | ;----------------------------------------------------------- |
669 | ;----------------------------------------------------------- |
667 | push eax ebx edx |
670 | push eax ebx edx |
668 | 671 | ||
669 | cmp eax,[LAST_CLUSTER] |
672 | cmp eax,[LAST_CLUSTER] |
670 | ja sdc_error ; too big cluster number, something is wrong |
673 | ja sdc_error ; too big cluster number, something is wrong |
671 | sub eax,2 |
674 | sub eax,2 |
672 | jb sdc_error ; don't allow rootdir write |
675 | jb sdc_error ; don't allow rootdir write |
673 | 676 | ||
674 | mov edx,[SECTORS_PER_CLUSTER] |
677 | mov edx,[SECTORS_PER_CLUSTER] |
675 | imul eax,edx |
678 | imul eax,edx |
676 | add eax,[DATA_START] |
679 | add eax,[DATA_START] |
677 | 680 | ||
678 | sdc_write: |
681 | sdc_write: |
679 | call hd_write |
682 | call hd_write |
680 | cmp [hd_error],0 |
683 | cmp [hd_error],0 |
681 | jne sdc_error |
684 | jne sdc_error |
682 | 685 | ||
683 | add ebx,512 ; update pointer |
686 | add ebx,512 ; update pointer |
684 | inc eax |
687 | inc eax |
685 | dec edx |
688 | dec edx |
686 | jnz sdc_write |
689 | jnz sdc_write |
687 | pop edx ebx eax |
690 | pop edx ebx eax |
688 | clc |
691 | clc |
689 | ret |
692 | ret |
690 | 693 | ||
691 | sdc_error: |
694 | sdc_error: |
692 | pop edx ebx eax |
695 | pop edx ebx eax |
693 | stc |
696 | stc |
694 | ret |
697 | ret |
695 | 698 | ||
696 | 699 | ||
697 | get_cluster_of_a_path: |
700 | get_cluster_of_a_path: |
698 | ;--------------------------------------------------------- |
701 | ;--------------------------------------------------------- |
699 | ; input : EBX = pointer to a path string |
702 | ; input : EBX = pointer to a path string |
700 | ; (example: the path "/files/data/document" become |
703 | ; (example: the path "/files/data/document" become |
701 | ; "files......data.......document...0" |
704 | ; "files......data.......document...0" |
702 | ; '.' = space char |
705 | ; '.' = space char |
703 | ; '0' = char(0) (ASCII=0) !!! ) |
706 | ; '0' = char(0) (ASCII=0) !!! ) |
704 | ; output : if (CARRY=1) -> ERROR in the PATH |
707 | ; output : if (CARRY=1) -> ERROR in the PATH |
705 | ; if (CARRY=0) -> EAX=cluster |
708 | ; if (CARRY=0) -> EAX=cluster |
706 | ;--------------------------------------------------------- |
709 | ;--------------------------------------------------------- |
707 | push ebx edx |
710 | push ebx edx |
708 | 711 | ||
709 | mov eax,[ROOT_CLUSTER] |
712 | mov eax,[ROOT_CLUSTER] |
710 | mov edx,ebx |
713 | mov edx,ebx |
711 | 714 | ||
712 | search_end_of_path: |
715 | search_end_of_path: |
713 | cmp byte [edx],0 |
716 | cmp byte [edx],0 |
714 | je found_end_of_path |
717 | je found_end_of_path |
715 | 718 | ||
716 | inc edx ; '/' |
719 | inc edx ; '/' |
717 | mov ebx,edx |
720 | mov ebx,edx |
718 | call analyze_directory |
721 | call analyze_directory |
719 | jc directory_not_found |
722 | jc directory_not_found |
720 | 723 | ||
721 | mov eax,[ebx+20-2] ; read the HIGH 16bit cluster field |
724 | mov eax,[ebx+20-2] ; read the HIGH 16bit cluster field |
722 | mov ax,[ebx+26] ; read the LOW 16bit cluster field |
725 | mov ax,[ebx+26] ; read the LOW 16bit cluster field |
723 | and eax,[fatMASK] |
726 | and eax,[fatMASK] |
724 | add edx,11 ; 8+3 (name+extension) |
727 | add edx,11 ; 8+3 (name+extension) |
725 | jmp search_end_of_path |
728 | jmp search_end_of_path |
726 | 729 | ||
727 | found_end_of_path: |
730 | found_end_of_path: |
728 | pop edx ebx |
731 | pop edx ebx |
729 | clc ; no errors |
732 | clc ; no errors |
730 | ret |
733 | ret |
731 | 734 | ||
732 | directory_not_found: |
735 | directory_not_found: |
733 | pop edx ebx |
736 | pop edx ebx |
734 | stc ; errors occour |
737 | stc ; errors occour |
735 | ret |
738 | ret |
736 | 739 | ||
737 | 740 | ||
738 | bcd2bin: |
741 | bcd2bin: |
739 | ;---------------------------------- |
742 | ;---------------------------------- |
740 | ; input : AL=BCD number (eg. 0x11) |
743 | ; input : AL=BCD number (eg. 0x11) |
741 | ; output : AH=0 |
744 | ; output : AH=0 |
742 | ; AL=decimal number (eg. 11) |
745 | ; AL=decimal number (eg. 11) |
743 | ;---------------------------------- |
746 | ;---------------------------------- |
744 | xor ah,ah |
747 | xor ah,ah |
745 | shl ax,4 |
748 | shl ax,4 |
746 | shr al,4 |
749 | shr al,4 |
747 | aad |
750 | aad |
748 | ret |
751 | ret |
749 | 752 | ||
750 | 753 | ||
751 | get_date_for_file: |
754 | get_date_for_file: |
752 | ;----------------------------------------------------- |
755 | ;----------------------------------------------------- |
753 | ; Get date from CMOS and pack day,month,year in AX |
756 | ; Get date from CMOS and pack day,month,year in AX |
754 | ; DATE bits 0..4 : day of month 0..31 |
757 | ; DATE bits 0..4 : day of month 0..31 |
755 | ; 5..8 : month of year 1..12 |
758 | ; 5..8 : month of year 1..12 |
756 | ; 9..15 : count of years from 1980 |
759 | ; 9..15 : count of years from 1980 |
757 | ;----------------------------------------------------- |
760 | ;----------------------------------------------------- |
758 | mov al,0x7 ;day |
761 | mov al,0x7 ;day |
759 | out 0x70,al |
762 | out 0x70,al |
760 | in al,0x71 |
763 | in al,0x71 |
761 | call bcd2bin |
764 | call bcd2bin |
762 | ror eax,5 |
765 | ror eax,5 |
763 | 766 | ||
764 | mov al,0x8 ;month |
767 | mov al,0x8 ;month |
765 | out 0x70,al |
768 | out 0x70,al |
766 | in al,0x71 |
769 | in al,0x71 |
767 | call bcd2bin |
770 | call bcd2bin |
768 | ror eax,4 |
771 | ror eax,4 |
769 | 772 | ||
770 | mov al,0x9 ;year |
773 | mov al,0x9 ;year |
771 | out 0x70,al |
774 | out 0x70,al |
772 | in al,0x71 |
775 | in al,0x71 |
773 | call bcd2bin |
776 | call bcd2bin |
774 | add ax,20 ;because CMOS return only the two last |
777 | add ax,20 ;because CMOS return only the two last |
775 | ;digit (eg. 2000 -> 00 , 2001 -> 01) and we |
778 | ;digit (eg. 2000 -> 00 , 2001 -> 01) and we |
776 | rol eax,9 ;need the difference with 1980 (eg. 2001-1980) |
779 | rol eax,9 ;need the difference with 1980 (eg. 2001-1980) |
777 | ret |
780 | ret |
778 | 781 | ||
779 | 782 | ||
780 | get_time_for_file: |
783 | get_time_for_file: |
781 | ;----------------------------------------------------- |
784 | ;----------------------------------------------------- |
782 | ; Get time from CMOS and pack hour,minute,second in AX |
785 | ; Get time from CMOS and pack hour,minute,second in AX |
783 | ; TIME bits 0..4 : second (the low bit is lost) |
786 | ; TIME bits 0..4 : second (the low bit is lost) |
784 | ; 5..10 : minute 0..59 |
787 | ; 5..10 : minute 0..59 |
785 | ; 11..15 : hour 0..23 |
788 | ; 11..15 : hour 0..23 |
786 | ;----------------------------------------------------- |
789 | ;----------------------------------------------------- |
787 | mov al,0x0 ;second |
790 | mov al,0x0 ;second |
788 | out 0x70,al |
791 | out 0x70,al |
789 | in al,0x71 |
792 | in al,0x71 |
790 | call bcd2bin |
793 | call bcd2bin |
791 | ror eax,6 |
794 | ror eax,6 |
792 | 795 | ||
793 | mov al,0x2 ;minute |
796 | mov al,0x2 ;minute |
794 | out 0x70,al |
797 | out 0x70,al |
795 | in al,0x71 |
798 | in al,0x71 |
796 | call bcd2bin |
799 | call bcd2bin |
797 | ror eax,6 |
800 | ror eax,6 |
798 | 801 | ||
799 | mov al,0x4 ;hour |
802 | mov al,0x4 ;hour |
800 | out 0x70,al |
803 | out 0x70,al |
801 | in al,0x71 |
804 | in al,0x71 |
802 | call bcd2bin |
805 | call bcd2bin |
803 | rol eax,11 |
806 | rol eax,11 |
804 | ret |
807 | ret |
805 | 808 | ||
806 | 809 | ||
807 | set_current_time_for_entry: |
810 | set_current_time_for_entry: |
808 | ;----------------------------------------------------- |
811 | ;----------------------------------------------------- |
809 | ; Set current time/date for file entry |
812 | ; Set current time/date for file entry |
810 | ; input : ebx = file entry pointer |
813 | ; input : ebx = file entry pointer |
811 | ;----------------------------------------------------- |
814 | ;----------------------------------------------------- |
812 | push eax |
815 | push eax |
813 | call get_time_for_file ; update files date/time |
816 | call get_time_for_file ; update files date/time |
814 | mov [ebx+22],ax |
817 | mov [ebx+22],ax |
815 | call get_date_for_file |
818 | call get_date_for_file |
816 | mov [ebx+24],ax |
819 | mov [ebx+24],ax |
817 | pop eax |
820 | pop eax |
818 | ret |
821 | ret |
819 | 822 | ||
820 | 823 | ||
821 | 824 | ||
822 | add_disk_free_space: |
825 | add_disk_free_space: |
823 | ;----------------------------------------------------- |
826 | ;----------------------------------------------------- |
824 | ; input : ecx = cluster count |
827 | ; input : ecx = cluster count |
825 | ; Note : negative = remove clusters from free space |
828 | ; Note : negative = remove clusters from free space |
826 | ; positive = add clusters to free space |
829 | ; positive = add clusters to free space |
827 | ;----------------------------------------------------- |
830 | ;----------------------------------------------------- |
828 | test ecx,ecx ; no change |
831 | test ecx,ecx ; no change |
829 | je add_dfs_no |
832 | je add_dfs_no |
830 | cmp [fs_type],32 ; free disk space only used by fat32 |
833 | cmp [fs_type],32 ; free disk space only used by fat32 |
831 | jne add_dfs_no |
834 | jne add_dfs_no |
832 | 835 | ||
833 | push eax ebx |
836 | push eax ebx |
834 | mov eax,[ADR_FSINFO] |
837 | mov eax,[ADR_FSINFO] |
835 | mov ebx,fsinfo_buffer |
838 | mov ebx,fsinfo_buffer |
836 | call hd_read |
839 | call hd_read |
837 | cmp [hd_error],0 |
840 | cmp [hd_error],0 |
838 | jne add_not_fs |
841 | jne add_not_fs |
839 | 842 | ||
840 | cmp dword [ebx+0x1fc],0xaa550000 ; check sector id |
843 | cmp dword [ebx+0x1fc],0xaa550000 ; check sector id |
841 | jne add_not_fs |
844 | jne add_not_fs |
842 | 845 | ||
843 | add [ebx+0x1e8],ecx |
846 | add [ebx+0x1e8],ecx |
844 | call hd_write |
847 | call hd_write |
845 | ; cmp [hd_error],0 |
848 | ; cmp [hd_error],0 |
846 | ; jne add_not_fs |
849 | ; jne add_not_fs |
847 | 850 | ||
848 | add_not_fs: |
851 | add_not_fs: |
849 | pop ebx eax |
852 | pop ebx eax |
850 | 853 | ||
851 | add_dfs_no: |
854 | add_dfs_no: |
852 | ret |
855 | ret |
853 | 856 | ||
854 | 857 | ||
855 | file_write: |
858 | file_write: |
856 | ;-------------------------------------------------------------------------- |
859 | ;-------------------------------------------------------------------------- |
857 | ; INPUT : user-reg register-in-this meaning symbol-in-this-routine |
860 | ; INPUT : user-reg register-in-this meaning symbol-in-this-routine |
858 | ; |
861 | ; |
859 | ; EAX EDI system call to write / |
862 | ; EAX EDI system call to write / |
860 | ; EBX EAX (PAR0) pointer to file-name PAR0 |
863 | ; EBX EAX (PAR0) pointer to file-name PAR0 |
861 | ; EDX ECX (PAR1) pointer to buffer PAR1 |
864 | ; EDX ECX (PAR1) pointer to buffer PAR1 |
862 | ; ECX EBX (PAR2) file size PAR2 |
865 | ; ECX EBX (PAR2) file size PAR2 |
863 | ; ESI EDX (PAR3) pointer to path PAR3 |
866 | ; ESI EDX (PAR3) pointer to path PAR3 |
864 | ; |
867 | ; |
865 | ; output : eax = 0 - ok |
868 | ; output : eax = 0 - ok |
866 | ; 3 - unknown FS |
869 | ; 3 - unknown FS |
867 | ; 5 - file not found |
870 | ; 5 - file not found |
868 | ; 8 - disk full |
871 | ; 8 - disk full |
869 | ; 10 - access denied |
872 | ; 10 - access denied |
870 | ;-------------------------------------------------------------------------- |
873 | ;-------------------------------------------------------------------------- |
871 | cmp [fs_type], 16 |
874 | cmp [fs_type], 16 |
872 | jz fat_ok_for_writing |
875 | jz fat_ok_for_writing |
873 | cmp [fs_type], 32 |
876 | cmp [fs_type], 32 |
874 | jz fat_ok_for_writing |
877 | jz fat_ok_for_writing |
875 | push ERROR_UNKNOWN_FS |
878 | push ERROR_UNKNOWN_FS |
876 | pop eax |
879 | pop eax |
877 | ret |
880 | ret |
878 | 881 | ||
879 | fat_ok_for_writing: |
882 | fat_ok_for_writing: |
880 | ; call reserve_hd1 |
883 | ; call reserve_hd1 |
881 | 884 | ||
882 | pushad |
885 | pushad |
883 | 886 | ||
884 | xor edi,edi ; don't allow directory remove |
887 | xor edi,edi ; don't allow directory remove |
885 | call file_delete ; try to delete the file first |
888 | call file_delete ; try to delete the file first |
886 | cmp [hd_error],0 |
889 | cmp [hd_error],0 |
887 | jne exit_write_access_1 |
890 | jne exit_write_access_1 |
888 | 891 | ||
889 | test eax,eax |
892 | test eax,eax |
890 | jz old_deleted ; deleted ok |
893 | jz old_deleted ; deleted ok |
891 | cmp eax,ERROR_FILE_NOT_FOUND |
894 | cmp eax,ERROR_FILE_NOT_FOUND |
892 | jnz exit_write_access ; it exist but can't delete |
895 | jnz exit_write_access ; it exist but can't delete |
893 | 896 | ||
894 | old_deleted: |
897 | old_deleted: |
895 | mov ebx,PUSHAD_EDX |
898 | mov ebx,PUSHAD_EDX |
896 | call get_cluster_of_a_path |
899 | call get_cluster_of_a_path |
897 | jnc found_directory_for_writing |
900 | jnc found_directory_for_writing |
898 | cmp [hd_error],0 |
901 | cmp [hd_error],0 |
899 | jne exit_write_access |
902 | jne exit_write_access |
900 | 903 | ||
901 | exit_writing_with_error: |
904 | exit_writing_with_error: |
902 | popad |
905 | popad |
903 | call update_disk ; write all of cache and fat to hd |
906 | call update_disk ; write all of cache and fat to hd |
904 | cmp [hd_error],0 |
907 | cmp [hd_error],0 |
905 | jne exit_write_access_2 |
908 | jne exit_write_access_2 |
906 | 909 | ||
907 | mov [hd1_status],0 |
910 | mov [hd1_status],0 |
908 | mov eax,ERROR_FILE_NOT_FOUND |
911 | mov eax,ERROR_FILE_NOT_FOUND |
909 | ret |
912 | ret |
910 | 913 | ||
911 | exit_writing_disk_full_clear: |
914 | exit_writing_disk_full_clear: |
912 | cmp [hd_error],0 |
915 | cmp [hd_error],0 |
913 | jne exit_write_access_1 |
916 | jne exit_write_access_1 |
914 | mov eax,[sector_tmp] |
917 | mov eax,[sector_tmp] |
915 | mov ebx,buffer |
918 | mov ebx,buffer |
916 | call hd_read ; read directory sector |
919 | call hd_read ; read directory sector |
917 | cmp [hd_error],0 |
920 | cmp [hd_error],0 |
918 | jne exit_write_access_1 |
921 | jne exit_write_access_1 |
919 | 922 | ||
920 | mov edx,[entry_pos] |
923 | mov edx,[entry_pos] |
921 | mov byte [edx],0xe5 ; mark as deleted |
924 | mov byte [edx],0xe5 ; mark as deleted |
922 | call hd_write |
925 | call hd_write |
923 | cmp [hd_error],0 |
926 | cmp [hd_error],0 |
924 | jne exit_write_access_1 |
927 | jne exit_write_access_1 |
925 | 928 | ||
926 | mov eax,[edx+20-2] ; FAT entry |
929 | mov eax,[edx+20-2] ; FAT entry |
927 | mov ax,[edx+26] |
930 | mov ax,[edx+26] |
928 | and eax,[fatMASK] |
931 | and eax,[fatMASK] |
929 | call clear_cluster_chain |
932 | call clear_cluster_chain |
930 | 933 | ||
931 | exit_writing_disk_full: |
934 | exit_writing_disk_full: |
932 | cmp [hd_error],0 |
935 | cmp [hd_error],0 |
933 | jne exit_write_access_1 |
936 | jne exit_write_access_1 |
934 | popad |
937 | popad |
935 | call update_disk ; write all of cache and fat to hd |
938 | call update_disk ; write all of cache and fat to hd |
936 | cmp [hd_error],0 |
939 | cmp [hd_error],0 |
937 | jne exit_write_access_2 |
940 | jne exit_write_access_2 |
938 | mov [hd1_status],0 |
941 | mov [hd1_status],0 |
939 | mov eax,ERROR_DISK_FULL |
942 | mov eax,ERROR_DISK_FULL |
940 | ret |
943 | ret |
941 | 944 | ||
942 | exit_write_access: |
945 | exit_write_access: |
943 | popad |
946 | popad |
944 | call update_disk ; write all of cache and fat to hd |
947 | call update_disk ; write all of cache and fat to hd |
945 | mov [hd1_status],0 |
948 | mov [hd1_status],0 |
946 | mov eax,ERROR_ACCESS_DENIED |
949 | mov eax,ERROR_ACCESS_DENIED |
947 | ret |
950 | ret |
948 | 951 | ||
949 | exit_write_access_1: |
952 | exit_write_access_1: |
950 | popad |
953 | popad |
951 | exit_write_access_2: |
954 | exit_write_access_2: |
952 | mov [hd1_status],0 |
955 | mov [hd1_status],0 |
953 | mov eax,ERROR_ACCESS_DENIED |
956 | mov eax,ERROR_ACCESS_DENIED |
954 | ret |
957 | ret |
955 | 958 | ||
956 | found_directory_for_writing: |
959 | found_directory_for_writing: |
957 | call analyze_directory_to_write |
960 | call analyze_directory_to_write |
958 | jc exit_writing_disk_full |
961 | jc exit_writing_disk_full |
959 | 962 | ||
960 | mov [sector_tmp],eax |
963 | mov [sector_tmp],eax |
961 | mov [entry_pos],ebx |
964 | mov [entry_pos],ebx |
962 | push eax ; save directory sector |
965 | push eax ; save directory sector |
963 | mov eax,2 |
966 | mov eax,2 |
964 | call get_free_FAT |
967 | call get_free_FAT |
965 | mov [cluster],eax ; first free cluster |
968 | mov [cluster],eax ; first free cluster |
966 | pop eax |
969 | pop eax |
967 | jc exit_writing_disk_full |
970 | jc exit_writing_disk_full |
968 | 971 | ||
969 | mov esi,PUSHAD_EAX ; file name |
972 | mov esi,PUSHAD_EAX ; file name |
970 | mov edi,ebx ; pointer in buffer |
973 | mov edi,ebx ; pointer in buffer |
971 | mov ecx,11 |
974 | mov ecx,11 |
972 | cld |
975 | cld |
973 | rep movsb |
976 | rep movsb |
974 | 977 | ||
975 | mov esi,PUSHAD_EBX ; file size (bytes left) |
978 | mov esi,PUSHAD_EBX ; file size (bytes left) |
976 | mov [ebx+28],esi ; file size |
979 | mov [ebx+28],esi ; file size |
977 | mov ecx,[cluster] |
980 | mov ecx,[cluster] |
978 | mov [ebx+26],cx ; 16 bits low of cluster |
981 | mov [ebx+26],cx ; 16 bits low of cluster |
979 | shr ecx,16 |
982 | shr ecx,16 |
980 | mov [ebx+20],cx ; 16 bits high of cluster (=0 fat16) |
983 | mov [ebx+20],cx ; 16 bits high of cluster (=0 fat16) |
981 | mov byte [ebx+11],0x20 ; attribute = archive |
984 | mov byte [ebx+11],0x20 ; attribute = archive |
982 | 985 | ||
983 | call set_current_time_for_entry |
986 | call set_current_time_for_entry |
984 | 987 | ||
985 | mov ebx,buffer ; save the directory name,length,cluster |
988 | mov ebx,buffer ; save the directory name,length,cluster |
986 | call hd_write |
989 | call hd_write |
987 | cmp [hd_error],0 |
990 | cmp [hd_error],0 |
988 | jne exit_write_access_1 |
991 | jne exit_write_access_1 |
989 | 992 | ||
990 | imul edi,[SECTORS_PER_CLUSTER],512 ; edi = cluster size in bytes |
993 | imul edi,[SECTORS_PER_CLUSTER],512 ; edi = cluster size in bytes |
991 | xor ecx,ecx ; cluster count |
994 | xor ecx,ecx ; cluster count |
992 | mov ebx,PUSHAD_ECX ; ebx = buffer |
995 | mov ebx,PUSHAD_ECX ; ebx = buffer |
993 | 996 | ||
994 | hd_new_block_write: |
997 | hd_new_block_write: |
995 | 998 | ||
996 | mov eax,[cluster] ; eax = block |
999 | mov eax,[cluster] ; eax = block |
997 | call set_data_cluster |
1000 | call set_data_cluster |
998 | cmp [hd_error],0 |
1001 | cmp [hd_error],0 |
999 | jne exit_write_access_1 |
1002 | jne exit_write_access_1 |
1000 | 1003 | ||
1001 | sub esi,edi ; sub wrote bytes |
1004 | sub esi,edi ; sub wrote bytes |
1002 | jbe file_saved_OK ; end if all done |
1005 | jbe file_saved_OK ; end if all done |
1003 | add ebx,edi ; update buffer position |
1006 | add ebx,edi ; update buffer position |
1004 | 1007 | ||
1005 | inc eax |
1008 | inc eax |
1006 | call get_free_FAT ; next free in FAT |
1009 | call get_free_FAT ; next free in FAT |
1007 | jc exit_writing_disk_full_clear |
1010 | jc exit_writing_disk_full_clear |
1008 | 1011 | ||
1009 | mov edx,eax |
1012 | mov edx,eax |
1010 | xchg eax,[cluster] ; get old cluster and save new cluster |
1013 | xchg eax,[cluster] ; get old cluster and save new cluster |
1011 | call set_FAT ; add it in cluster chain |
1014 | call set_FAT ; add it in cluster chain |
1012 | cmp [hd_error],0 |
1015 | cmp [hd_error],0 |
1013 | jne exit_write_access_1 |
1016 | jne exit_write_access_1 |
1014 | 1017 | ||
1015 | dec ecx ; update cluster count |
1018 | dec ecx ; update cluster count |
1016 | jmp hd_new_block_write |
1019 | jmp hd_new_block_write |
1017 | 1020 | ||
1018 | file_saved_OK: |
1021 | file_saved_OK: |
1019 | 1022 | ||
1020 | mov edx,[fatEND] ; new end for cluster chain |
1023 | mov edx,[fatEND] ; new end for cluster chain |
1021 | call set_FAT |
1024 | call set_FAT |
1022 | cmp [hd_error],0 |
1025 | cmp [hd_error],0 |
1023 | jne exit_write_access_1 |
1026 | jne exit_write_access_1 |
1024 | 1027 | ||
1025 | dec ecx ; update cluster count |
1028 | dec ecx ; update cluster count |
1026 | 1029 | ||
1027 | call add_disk_free_space ; remove clusters from free disk space |
1030 | call add_disk_free_space ; remove clusters from free disk space |
1028 | cmp [hd_error],0 |
1031 | cmp [hd_error],0 |
1029 | jne exit_write_access_1 |
1032 | jne exit_write_access_1 |
1030 | 1033 | ||
1031 | popad |
1034 | popad |
1032 | call update_disk ; write all of cache and fat to hd |
1035 | call update_disk ; write all of cache and fat to hd |
1033 | cmp [hd_error],0 |
1036 | cmp [hd_error],0 |
1034 | jne exit_write_access_2 |
1037 | jne exit_write_access_2 |
1035 | mov [hd1_status],0 |
1038 | mov [hd1_status],0 |
1036 | xor eax,eax |
1039 | xor eax,eax |
1037 | ret |
1040 | ret |
1038 | 1041 | ||
1039 | 1042 | ||
1040 | file_read: |
1043 | file_read: |
1041 | ;-------------------------------------------------------------------------- |
1044 | ;-------------------------------------------------------------------------- |
1042 | ; INPUT : user-register register-in-this meaning symbol-in-this |
1045 | ; INPUT : user-register register-in-this meaning symbol-in-this |
1043 | ; |
1046 | ; |
1044 | ; EAX EDI system call to write / |
1047 | ; EAX EDI system call to write / |
1045 | ; EBX EAX (PAR0) pointer to file-name PAR0 |
1048 | ; EBX EAX (PAR0) pointer to file-name PAR0 |
1046 | ; EDX ECX (PAR1) pointer to buffer PAR1 |
1049 | ; EDX ECX (PAR1) pointer to buffer PAR1 |
1047 | ; ECX EBX (PAR2) vt file blocks to read PAR2 |
1050 | ; ECX EBX (PAR2) vt file blocks to read PAR2 |
1048 | ; ESI EDX (PAR3) pointer to path PAR3 |
1051 | ; ESI EDX (PAR3) pointer to path PAR3 |
1049 | ; EDI ESI vt first 512 block to read |
1052 | ; EDI ESI vt first 512 block to read |
1050 | ; EDI if 0 - read root |
1053 | ; EDI if 0 - read root |
1051 | ; |
1054 | ; |
1052 | ; output : eax = 0 - ok |
1055 | ; output : eax = 0 - ok |
1053 | ; 3 - unknown FS |
1056 | ; 3 - unknown FS |
1054 | ; 5 - file not found |
1057 | ; 5 - file not found |
1055 | ; 6 - end of file |
1058 | ; 6 - end of file |
1056 | ; 9 - fat table corrupted |
1059 | ; 9 - fat table corrupted |
1057 | ; 10 - access denied |
1060 | ; 10 - access denied |
1058 | ; ebx = size of file/directory |
1061 | ; ebx = size of file/directory |
1059 | ;-------------------------------------------------------------------------- |
1062 | ;-------------------------------------------------------------------------- |
1060 | cmp [fs_type], 16 |
1063 | cmp [fs_type], 16 |
1061 | jz fat_ok_for_reading |
1064 | jz fat_ok_for_reading |
1062 | cmp [fs_type], 32 |
1065 | cmp [fs_type], 32 |
1063 | jz fat_ok_for_reading |
1066 | jz fat_ok_for_reading |
1064 | xor ebx,ebx |
1067 | xor ebx,ebx |
1065 | mov eax,ERROR_UNKNOWN_FS |
1068 | mov eax,ERROR_UNKNOWN_FS |
1066 | mov [hd1_status], ebx |
1069 | mov [hd1_status], ebx |
1067 | ret |
1070 | ret |
1068 | 1071 | ||
1069 | fat_ok_for_reading: |
1072 | fat_ok_for_reading: |
1070 | ; call reserve_hd1 |
1073 | ; call reserve_hd1 |
1071 | 1074 | ||
1072 | pushad |
1075 | pushad |
1073 | 1076 | ||
1074 | mov ebx,edx |
1077 | mov ebx,edx |
1075 | call get_cluster_of_a_path |
1078 | call get_cluster_of_a_path |
1076 | jc file_to_read_not_found |
1079 | jc file_to_read_not_found |
1077 | 1080 | ||
1078 | test edi,edi ; read rootdir |
1081 | test edi,edi ; read rootdir |
1079 | jne no_read_root |
1082 | jne no_read_root |
1080 | 1083 | ||
1081 | xor eax,eax |
1084 | xor eax,eax |
1082 | call get_dir_size ; return rootdir size |
1085 | call get_dir_size ; return rootdir size |
1083 | cmp [hd_error],0 |
1086 | cmp [hd_error],0 |
1084 | jne file_access_denied |
1087 | jne file_access_denied |
1085 | 1088 | ||
1086 | mov [file_size],eax |
1089 | mov [file_size],eax |
1087 | mov eax,[ROOT_CLUSTER] |
1090 | mov eax,[ROOT_CLUSTER] |
1088 | jmp file_read_start |
1091 | jmp file_read_start |
1089 | 1092 | ||
1090 | no_read_root: |
1093 | no_read_root: |
1091 | mov ebx,PUSHAD_EAX ; file name |
1094 | mov ebx,PUSHAD_EAX ; file name |
1092 | call analyze_directory |
1095 | call analyze_directory |
1093 | jc file_to_read_not_found |
1096 | jc file_to_read_not_found |
1094 | 1097 | ||
1095 | mov eax,[ebx+28] ; file size |
1098 | mov eax,[ebx+28] ; file size |
1096 | test byte [ebx+11],0x10 ; is it directory? |
1099 | test byte [ebx+11],0x10 ; is it directory? |
1097 | jz read_set_size ; no |
1100 | jz read_set_size ; no |
1098 | 1101 | ||
1099 | mov eax,[ebx+20-2] ; FAT entry |
1102 | mov eax,[ebx+20-2] ; FAT entry |
1100 | mov ax,[ebx+26] |
1103 | mov ax,[ebx+26] |
1101 | and eax,[fatMASK] |
1104 | and eax,[fatMASK] |
1102 | call get_dir_size |
1105 | call get_dir_size |
1103 | cmp [hd_error],0 |
1106 | cmp [hd_error],0 |
1104 | jne file_access_denied |
1107 | jne file_access_denied |
1105 | 1108 | ||
1106 | read_set_size: |
1109 | read_set_size: |
1107 | mov [file_size],eax |
1110 | mov [file_size],eax |
1108 | 1111 | ||
1109 | mov eax,[ebx+20-2] ; FAT entry |
1112 | mov eax,[ebx+20-2] ; FAT entry |
1110 | mov ax,[ebx+26] |
1113 | mov ax,[ebx+26] |
1111 | and eax,[fatMASK] |
1114 | and eax,[fatMASK] |
1112 | 1115 | ||
1113 | file_read_start: |
1116 | file_read_start: |
1114 | mov ebx,PUSHAD_ECX ; pointer to buffer |
1117 | mov ebx,PUSHAD_ECX ; pointer to buffer |
1115 | mov edx,PUSHAD_EBX ; file blocks to read |
1118 | mov edx,PUSHAD_EBX ; file blocks to read |
1116 | mov esi,PUSHAD_ESI ; first 512 block to read |
1119 | mov esi,PUSHAD_ESI ; first 512 block to read |
1117 | 1120 | ||
1118 | file_read_new_cluster: |
1121 | file_read_new_cluster: |
1119 | call get_data_cluster |
1122 | call get_data_cluster |
1120 | jc file_read_eof ; end of file or cluster out of range |
1123 | jc file_read_eof ; end of file or cluster out of range |
1121 | 1124 | ||
1122 | test edx,edx ; is all read? |
1125 | test edx,edx ; is all read? |
1123 | je file_read_OK ; yes |
1126 | je file_read_OK ; yes |
1124 | 1127 | ||
1125 | call get_FAT ; get next cluster |
1128 | call get_FAT ; get next cluster |
1126 | cmp [hd_error],0 |
1129 | cmp [hd_error],0 |
1127 | jne file_access_denied |
1130 | jne file_access_denied |
1128 | 1131 | ||
1129 | cmp eax,[fatRESERVED] ; end of file |
1132 | cmp eax,[fatRESERVED] ; end of file |
1130 | jnb file_read_eof |
1133 | jnb file_read_eof |
1131 | cmp eax,2 ; incorrect fat chain |
1134 | cmp eax,2 ; incorrect fat chain |
1132 | jnb file_read_new_cluster |
1135 | jnb file_read_new_cluster |
1133 | 1136 | ||
1134 | popad |
1137 | popad |
1135 | mov [hd1_status],0 |
1138 | mov [hd1_status],0 |
1136 | mov ebx,[file_size] |
1139 | mov ebx,[file_size] |
1137 | mov eax,ERROR_FAT_TABLE |
1140 | mov eax,ERROR_FAT_TABLE |
1138 | ret |
1141 | ret |
1139 | 1142 | ||
1140 | file_read_eof: |
1143 | file_read_eof: |
1141 | cmp [hd_error],0 |
1144 | cmp [hd_error],0 |
1142 | jne file_access_denied |
1145 | jne file_access_denied |
1143 | popad |
1146 | popad |
1144 | mov [hd1_status],0 |
1147 | mov [hd1_status],0 |
1145 | mov ebx,[file_size] |
1148 | mov ebx,[file_size] |
1146 | mov eax,ERROR_END_OF_FILE |
1149 | mov eax,ERROR_END_OF_FILE |
1147 | ret |
1150 | ret |
1148 | 1151 | ||
1149 | file_read_OK: |
1152 | file_read_OK: |
1150 | popad |
1153 | popad |
1151 | mov [hd1_status],0 |
1154 | mov [hd1_status],0 |
1152 | mov ebx,[file_size] |
1155 | mov ebx,[file_size] |
1153 | xor eax,eax |
1156 | xor eax,eax |
1154 | ret |
1157 | ret |
1155 | 1158 | ||
1156 | file_to_read_not_found: |
1159 | file_to_read_not_found: |
1157 | cmp [hd_error],0 |
1160 | cmp [hd_error],0 |
1158 | jne file_access_denied |
1161 | jne file_access_denied |
1159 | popad |
1162 | popad |
1160 | mov [hd1_status],0 |
1163 | mov [hd1_status],0 |
1161 | xor ebx,ebx |
1164 | xor ebx,ebx |
1162 | mov eax,ERROR_FILE_NOT_FOUND |
1165 | mov eax,ERROR_FILE_NOT_FOUND |
1163 | ret |
1166 | ret |
1164 | 1167 | ||
1165 | file_access_denied: |
1168 | file_access_denied: |
1166 | popad |
1169 | popad |
1167 | mov [hd1_status],0 |
1170 | mov [hd1_status],0 |
1168 | xor ebx,ebx |
1171 | xor ebx,ebx |
1169 | mov eax,ERROR_ACCESS_DENIED |
1172 | mov eax,ERROR_ACCESS_DENIED |
1170 | ret |
1173 | ret |
1171 | 1174 | ||
1172 | get_dir_size: |
1175 | get_dir_size: |
1173 | ;----------------------------------------------------- |
1176 | ;----------------------------------------------------- |
1174 | ; input : eax = first cluster (0=rootdir) |
1177 | ; input : eax = first cluster (0=rootdir) |
1175 | ; output : eax = directory size in bytes |
1178 | ; output : eax = directory size in bytes |
1176 | ;----------------------------------------------------- |
1179 | ;----------------------------------------------------- |
1177 | push edx |
1180 | push edx |
1178 | xor edx,edx ; count of directory clusters |
1181 | xor edx,edx ; count of directory clusters |
1179 | test eax,eax |
1182 | test eax,eax |
1180 | jnz dir_size_next |
1183 | jnz dir_size_next |
1181 | 1184 | ||
1182 | mov eax,[ROOT_SECTORS] |
1185 | mov eax,[ROOT_SECTORS] |
1183 | shl eax,9 ; fat16 rootdir size in bytes |
1186 | shl eax,9 ; fat16 rootdir size in bytes |
1184 | cmp [fs_type],16 |
1187 | cmp [fs_type],16 |
1185 | je dir_size_ret |
1188 | je dir_size_ret |
1186 | mov eax,[ROOT_CLUSTER] |
1189 | mov eax,[ROOT_CLUSTER] |
1187 | 1190 | ||
1188 | dir_size_next: |
1191 | dir_size_next: |
1189 | cmp eax,2 ; incorrect fat chain |
1192 | cmp eax,2 ; incorrect fat chain |
1190 | jb dir_size_end |
1193 | jb dir_size_end |
1191 | cmp eax,[fatRESERVED] ; end of directory |
1194 | cmp eax,[fatRESERVED] ; end of directory |
1192 | ja dir_size_end |
1195 | ja dir_size_end |
1193 | call get_FAT ; get next cluster |
1196 | call get_FAT ; get next cluster |
1194 | cmp [hd_error],0 |
1197 | cmp [hd_error],0 |
1195 | jne dir_size_ret |
1198 | jne dir_size_ret |
1196 | 1199 | ||
1197 | inc edx |
1200 | inc edx |
1198 | jmp dir_size_next |
1201 | jmp dir_size_next |
1199 | 1202 | ||
1200 | dir_size_end: |
1203 | dir_size_end: |
1201 | imul eax,[SECTORS_PER_CLUSTER],512 ; cluster size in bytes |
1204 | imul eax,[SECTORS_PER_CLUSTER],512 ; cluster size in bytes |
1202 | imul eax,edx |
1205 | imul eax,edx |
1203 | 1206 | ||
1204 | dir_size_ret: |
1207 | dir_size_ret: |
1205 | pop edx |
1208 | pop edx |
1206 | ret |
1209 | ret |
1207 | 1210 | ||
1208 | 1211 | ||
1209 | file_delete: |
1212 | file_delete: |
1210 | ;----------------------------------------------------- |
1213 | ;----------------------------------------------------- |
1211 | ; input : eax = file/directory name |
1214 | ; input : eax = file/directory name |
1212 | ; edx = path |
1215 | ; edx = path |
1213 | ; edi = 1 - allow directory remove else don't remove directory |
1216 | ; edi = 1 - allow directory remove else don't remove directory |
1214 | ; output : eax = 0 - ok |
1217 | ; output : eax = 0 - ok |
1215 | ; 3 - unknown FS |
1218 | ; 3 - unknown FS |
1216 | ; 5 - file not found |
1219 | ; 5 - file not found |
1217 | ; 10 - access denied |
1220 | ; 10 - access denied |
1218 | ;----------------------------------------------------- |
1221 | ;----------------------------------------------------- |
1219 | cmp [fs_type], 16 |
1222 | cmp [fs_type], 16 |
1220 | jz file_del_fat_ok |
1223 | jz file_del_fat_ok |
1221 | cmp [fs_type], 32 |
1224 | cmp [fs_type], 32 |
1222 | jz file_del_fat_ok |
1225 | jz file_del_fat_ok |
1223 | push ERROR_UNKNOWN_FS |
1226 | push ERROR_UNKNOWN_FS |
1224 | pop eax |
1227 | pop eax |
1225 | ret |
1228 | ret |
1226 | 1229 | ||
1227 | file_del_fat_ok: |
1230 | file_del_fat_ok: |
1228 | pushad |
1231 | pushad |
1229 | 1232 | ||
1230 | mov ebx,edx |
1233 | mov ebx,edx |
1231 | call get_cluster_of_a_path |
1234 | call get_cluster_of_a_path |
1232 | jc file_to_delete_not_found |
1235 | jc file_to_delete_not_found |
1233 | 1236 | ||
1234 | mov ebx,PUSHAD_EAX ; file/directory name |
1237 | mov ebx,PUSHAD_EAX ; file/directory name |
1235 | call analyze_directory |
1238 | call analyze_directory |
1236 | jc file_to_delete_not_found |
1239 | jc file_to_delete_not_found |
1237 | 1240 | ||
1238 | test byte [ebx+11],0x10 ; is it directory? |
1241 | test byte [ebx+11],0x10 ; is it directory? |
1239 | jnz delete_no_access |
1242 | jnz delete_no_access |
1240 | 1243 | ||
1241 | delete_notdir: |
1244 | delete_notdir: |
1242 | call delete_entry_name |
1245 | call delete_entry_name |
1243 | cmp [hd_error],0 |
1246 | cmp [hd_error],0 |
1244 | jne delete_no_access |
1247 | jne delete_no_access |
1245 | 1248 | ||
1246 | mov eax,ecx ; first cluster of file |
1249 | mov eax,ecx ; first cluster of file |
1247 | call clear_cluster_chain |
1250 | call clear_cluster_chain |
1248 | cmp [hd_error],0 |
1251 | cmp [hd_error],0 |
1249 | jne delete_no_access |
1252 | jne delete_no_access |
1250 | 1253 | ||
1251 | popad |
1254 | popad |
1252 | xor eax,eax |
1255 | xor eax,eax |
1253 | ret |
1256 | ret |
1254 | 1257 | ||
1255 | delete_no_access_1: |
1258 | delete_no_access_1: |
1256 | add esp,4 |
1259 | add esp,4 |
1257 | delete_no_access: |
1260 | delete_no_access: |
1258 | popad |
1261 | popad |
1259 | mov eax,ERROR_ACCESS_DENIED |
1262 | mov eax,ERROR_ACCESS_DENIED |
1260 | ret |
1263 | ret |
1261 | 1264 | ||
1262 | file_to_delete_not_found: |
1265 | file_to_delete_not_found: |
1263 | cmp [hd_error],0 |
1266 | cmp [hd_error],0 |
1264 | jne delete_no_access |
1267 | jne delete_no_access |
1265 | popad |
1268 | popad |
1266 | mov eax,ERROR_FILE_NOT_FOUND |
1269 | mov eax,ERROR_FILE_NOT_FOUND |
1267 | ret |
1270 | ret |
1268 | 1271 | ||
1269 | 1272 | ||
1270 | clear_cluster_chain: |
1273 | clear_cluster_chain: |
1271 | ;----------------------------------------------------- |
1274 | ;----------------------------------------------------- |
1272 | ; input : eax = first cluster |
1275 | ; input : eax = first cluster |
1273 | ;----------------------------------------------------- |
1276 | ;----------------------------------------------------- |
1274 | push eax ecx edx |
1277 | push eax ecx edx |
1275 | xor ecx,ecx ; cluster count |
1278 | xor ecx,ecx ; cluster count |
1276 | 1279 | ||
1277 | clean_new_chain: |
1280 | clean_new_chain: |
1278 | cmp eax,[LAST_CLUSTER] ; end of file |
1281 | cmp eax,[LAST_CLUSTER] ; end of file |
1279 | ja delete_OK |
1282 | ja delete_OK |
1280 | cmp eax,2 ; unfinished fat chain or zero length file |
1283 | cmp eax,2 ; unfinished fat chain or zero length file |
1281 | jb delete_OK |
1284 | jb delete_OK |
1282 | cmp eax,[ROOT_CLUSTER] ; don't remove root cluster |
1285 | cmp eax,[ROOT_CLUSTER] ; don't remove root cluster |
1283 | jz delete_OK |
1286 | jz delete_OK |
1284 | 1287 | ||
1285 | xor edx,edx |
1288 | xor edx,edx |
1286 | call set_FAT ; clear fat entry |
1289 | call set_FAT ; clear fat entry |
1287 | cmp [hd_error],0 |
1290 | cmp [hd_error],0 |
1288 | jne access_denied_01 |
1291 | jne access_denied_01 |
1289 | 1292 | ||
1290 | inc ecx ; update cluster count |
1293 | inc ecx ; update cluster count |
1291 | mov eax,edx ; old cluster |
1294 | mov eax,edx ; old cluster |
1292 | jmp clean_new_chain |
1295 | jmp clean_new_chain |
1293 | 1296 | ||
1294 | delete_OK: |
1297 | delete_OK: |
1295 | call add_disk_free_space ; add clusters to free disk space |
1298 | call add_disk_free_space ; add clusters to free disk space |
1296 | access_denied_01: |
1299 | access_denied_01: |
1297 | pop edx ecx eax |
1300 | pop edx ecx eax |
1298 | ret |
1301 | ret |
1299 | 1302 | ||
1300 | 1303 | ||
1301 | delete_entry_name: |
1304 | delete_entry_name: |
1302 | ;----------------------------------------------------- |
1305 | ;----------------------------------------------------- |
1303 | ; input : eax = directory sector |
1306 | ; input : eax = directory sector |
1304 | ; ebx = directory pointer in buffer |
1307 | ; ebx = directory pointer in buffer |
1305 | ; longname_sec = 2 previous directory sectors |
1308 | ; longname_sec = 2 previous directory sectors |
1306 | ; output : ecx = first cluster |
1309 | ; output : ecx = first cluster |
1307 | ; change : eax,ebx,edx |
1310 | ; change : eax,ebx,edx |
1308 | ;----------------------------------------------------- |
1311 | ;----------------------------------------------------- |
1309 | mov byte [ebx],0xe5 |
1312 | mov byte [ebx],0xe5 |
1310 | mov ecx,[ebx+20-2] ; first cluster of file |
1313 | mov ecx,[ebx+20-2] ; first cluster of file |
1311 | mov cx,[ebx+26] ; 0 length files start cluster = 0 |
1314 | mov cx,[ebx+26] ; 0 length files start cluster = 0 |
1312 | and ecx,[fatMASK] |
1315 | and ecx,[fatMASK] |
1313 | 1316 | ||
1314 | delete_empty: |
1317 | delete_empty: |
1315 | sub ebx,32 |
1318 | sub ebx,32 |
1316 | cmp ebx,buffer |
1319 | cmp ebx,buffer |
1317 | jnb delete_test_long |
1320 | jnb delete_test_long |
1318 | 1321 | ||
1319 | mov ebx,buffer |
1322 | mov ebx,buffer |
1320 | call hd_write ; write directory sector back |
1323 | call hd_write ; write directory sector back |
1321 | cmp [hd_error],0 |
1324 | cmp [hd_error],0 |
1322 | jne delete_name_end |
1325 | jne delete_name_end |
1323 | 1326 | ||
1324 | xor eax,eax |
1327 | xor eax,eax |
1325 | xchg eax,[longname_sec2] |
1328 | xchg eax,[longname_sec2] |
1326 | xchg eax,[longname_sec1] |
1329 | xchg eax,[longname_sec1] |
1327 | test eax,eax ; is there previous directory sector? |
1330 | test eax,eax ; is there previous directory sector? |
1328 | jz delete_name_end ; no |
1331 | jz delete_name_end ; no |
1329 | 1332 | ||
1330 | mov ebx,buffer |
1333 | mov ebx,buffer |
1331 | call hd_read ; read previous sector |
1334 | call hd_read ; read previous sector |
1332 | cmp [hd_error],0 |
1335 | cmp [hd_error],0 |
1333 | jne delete_name_end |
1336 | jne delete_name_end |
1334 | 1337 | ||
1335 | mov ebx,buffer+0x1e0 ; start from last entry |
1338 | mov ebx,buffer+0x1e0 ; start from last entry |
1336 | 1339 | ||
1337 | delete_test_long: |
1340 | delete_test_long: |
1338 | mov dh,[ebx+11] ; file attribute |
1341 | mov dh,[ebx+11] ; file attribute |
1339 | and dh,0xf |
1342 | and dh,0xf |
1340 | cmp dh,0xf |
1343 | cmp dh,0xf |
1341 | jne delete_write_buffer |
1344 | jne delete_write_buffer |
1342 | 1345 | ||
1343 | cmp byte [ebx],0x40 ; end of long dir entry? |
1346 | cmp byte [ebx],0x40 ; end of long dir entry? |
1344 | mov byte [ebx],0xe5 |
1347 | mov byte [ebx],0xe5 |
1345 | jb delete_empty |
1348 | jb delete_empty |
1346 | 1349 | ||
1347 | delete_write_buffer: |
1350 | delete_write_buffer: |
1348 | mov ebx,buffer |
1351 | mov ebx,buffer |
1349 | call hd_write ; write directory sector back |
1352 | call hd_write ; write directory sector back |
1350 | 1353 | ||
1351 | delete_name_end: |
1354 | delete_name_end: |
1352 | ret |
1355 | ret |
1353 | 1356 | ||
1354 | 1357 | ||
1355 | get_hd_info: |
1358 | get_hd_info: |
1356 | ;----------------------------------------------------------- |
1359 | ;----------------------------------------------------------- |
1357 | ; output : eax = 0 - ok |
1360 | ; output : eax = 0 - ok |
1358 | ; 3 - unknown FS |
1361 | ; 3 - unknown FS |
1359 | ; 10 - access denied |
1362 | ; 10 - access denied |
1360 | ; edx = cluster size in bytes |
1363 | ; edx = cluster size in bytes |
1361 | ; ebx = total clusters on disk |
1364 | ; ebx = total clusters on disk |
1362 | ; ecx = free clusters on disk |
1365 | ; ecx = free clusters on disk |
1363 | ;----------------------------------------------------------- |
1366 | ;----------------------------------------------------------- |
1364 | cmp [fs_type], 16 |
1367 | cmp [fs_type], 16 |
1365 | jz info_fat_ok |
1368 | jz info_fat_ok |
1366 | cmp [fs_type], 32 |
1369 | cmp [fs_type], 32 |
1367 | jz info_fat_ok |
1370 | jz info_fat_ok |
1368 | xor edx,edx |
1371 | xor edx,edx |
1369 | xor ebx,ebx |
1372 | xor ebx,ebx |
1370 | xor ecx,ecx |
1373 | xor ecx,ecx |
1371 | mov eax,ERROR_UNKNOWN_FS |
1374 | mov eax,ERROR_UNKNOWN_FS |
1372 | ret |
1375 | ret |
1373 | 1376 | ||
1374 | info_fat_ok: |
1377 | info_fat_ok: |
1375 | ; call reserve_hd1 |
1378 | ; call reserve_hd1 |
1376 | 1379 | ||
1377 | xor ecx,ecx ; count of free clusters |
1380 | xor ecx,ecx ; count of free clusters |
1378 | mov eax,2 |
1381 | mov eax,2 |
1379 | mov ebx,[LAST_CLUSTER] |
1382 | mov ebx,[LAST_CLUSTER] |
1380 | 1383 | ||
1381 | info_cluster: |
1384 | info_cluster: |
1382 | push eax |
1385 | push eax |
1383 | call get_FAT ; get cluster info |
1386 | call get_FAT ; get cluster info |
1384 | cmp [hd_error],0 |
1387 | cmp [hd_error],0 |
1385 | jne info_access_denied |
1388 | jne info_access_denied |
1386 | 1389 | ||
1387 | test eax,eax ; is it free? |
1390 | test eax,eax ; is it free? |
1388 | jnz info_used ; no |
1391 | jnz info_used ; no |
1389 | inc ecx |
1392 | inc ecx |
1390 | 1393 | ||
1391 | info_used: |
1394 | info_used: |
1392 | pop eax |
1395 | pop eax |
1393 | inc eax |
1396 | inc eax |
1394 | cmp eax,ebx ; is above last cluster? |
1397 | cmp eax,ebx ; is above last cluster? |
1395 | jbe info_cluster ; no. test next cluster |
1398 | jbe info_cluster ; no. test next cluster |
1396 | 1399 | ||
1397 | dec ebx ; cluster count |
1400 | dec ebx ; cluster count |
1398 | imul edx,[SECTORS_PER_CLUSTER],512 ; cluster size in bytes |
1401 | imul edx,[SECTORS_PER_CLUSTER],512 ; cluster size in bytes |
1399 | mov [hd1_status],0 |
1402 | mov [hd1_status],0 |
1400 | xor eax,eax |
1403 | xor eax,eax |
1401 | ret |
1404 | ret |
1402 | 1405 | ||
1403 | info_access_denied: |
1406 | info_access_denied: |
1404 | add esp,4 |
1407 | add esp,4 |
1405 | xor edx,edx |
1408 | xor edx,edx |
1406 | xor ebx,ebx |
1409 | xor ebx,ebx |
1407 | xor ecx,ecx |
1410 | xor ecx,ecx |
1408 | mov eax,ERROR_ACCESS_DENIED |
1411 | mov eax,ERROR_ACCESS_DENIED |
1409 | ret |
1412 | ret |
1410 | 1413 | ||
1411 | update_disk: |
1414 | update_disk: |
1412 | ;----------------------------------------------------------- |
1415 | ;----------------------------------------------------------- |
1413 | ; write changed fat and cache to disk |
1416 | ; write changed fat and cache to disk |
1414 | ;----------------------------------------------------------- |
1417 | ;----------------------------------------------------------- |
1415 | cmp [fat_change],0 ; is fat changed? |
1418 | cmp [fat_change],0 ; is fat changed? |
1416 | je upd_no_change |
1419 | je upd_no_change |
1417 | 1420 | ||
1418 | call write_fat_sector |
1421 | call write_fat_sector |
1419 | cmp [hd_error],0 |
1422 | cmp [hd_error],0 |
1420 | jne update_disk_acces_denied |
1423 | jne update_disk_acces_denied |
1421 | 1424 | ||
1422 | upd_no_change: |
1425 | upd_no_change: |
1423 | 1426 | ||
1424 | call write_cache |
1427 | call write_cache |
1425 | update_disk_acces_denied: |
1428 | update_disk_acces_denied: |
1426 | ret |
1429 | ret |
1427 | 1430 | ||
1428 | read_hd_file: |
1431 | read_hd_file: |
1429 | ;----------------------------------------------------------------- |
1432 | ;----------------------------------------------------------------- |
1430 | ; |
1433 | ; |
1431 | ; Converting old reading function for hd-application start. |
1434 | ; Converting old reading function for hd-application start. |
1432 | ; |
1435 | ; |
1433 | ; IN: |
1436 | ; IN: |
1434 | ; |
1437 | ; |
1435 | ; eax - pointer to file (0 = read only first sector of drive: eg 'label') |
1438 | ; eax - pointer to file (0 = read only first sector of drive: eg 'label') |
1436 | ; ebx - file lenght |
1439 | ; ebx - file lenght |
1437 | ; ecx - start 512 byte block number |
1440 | ; ecx - start 512 byte block number |
1438 | ; edx - number of blocks to read |
1441 | ; edx - number of blocks to read |
1439 | ; esi - pointer to return/work area (atleast 20 000 bytes) |
1442 | ; esi - pointer to return/work area (atleast 20 000 bytes) |
1440 | ; |
1443 | ; |
1441 | ; For new read function |
1444 | ; For new read function |
1442 | ; |
1445 | ; |
1443 | ; EAX (PAR0) pointer to file-name |
1446 | ; EAX (PAR0) pointer to file-name |
1444 | ; ECX (PAR1) pointer to buffer |
1447 | ; ECX (PAR1) pointer to buffer |
1445 | ; EBX (PAR2) vt file blocks to read |
1448 | ; EBX (PAR2) vt file blocks to read |
1446 | ; EDX (PAR3) pointer to path |
1449 | ; EDX (PAR3) pointer to path |
1447 | ; ESI vt first 512 block to read |
1450 | ; ESI vt first 512 block to read |
1448 | ; EDI if 0 - return root |
1451 | ; EDI if 0 - return root |
1449 | ;-------------------------------------------------------------------------- |
1452 | ;-------------------------------------------------------------------------- |
1450 | 1453 | ||
1451 | push ecx esi edi |
1454 | push ecx esi edi |
1452 | mov esi,eax |
1455 | mov esi,eax |
1453 | mov edi,startpath |
1456 | mov edi,startpath |
1454 | mov ecx,250 |
1457 | mov ecx,250 |
1455 | cld |
1458 | cld |
1456 | rep movsb |
1459 | rep movsb |
1457 | pop edi esi ecx |
1460 | pop edi esi ecx |
1458 | 1461 | ||
1459 | mov eax,startpath |
1462 | mov eax,startpath |
1460 | mov [eax+ebx-12],byte 0 |
1463 | mov [eax+ebx-12],byte 0 |
1461 | 1464 | ||
1462 | push eax ebx ecx edx esi |
1465 | push eax ebx ecx edx esi |
1463 | 1466 | ||
1464 | pop ecx ; pointer to buffer |
1467 | pop ecx ; pointer to buffer |
1465 | add ecx,1024 |
1468 | add ecx,1024 |
1466 | pop ebx ; number of blocks to read |
1469 | pop ebx ; number of blocks to read |
1467 | pop esi ; first block to read |
1470 | pop esi ; first block to read |
1468 | dec esi |
1471 | dec esi |
1469 | pop eax ; file length |
1472 | pop eax ; file length |
1470 | pop edx ; pointer to path |
1473 | pop edx ; pointer to path |
1471 | 1474 | ||
1472 | mov edi,12 |
1475 | mov edi,12 |
1473 | lea eax,[eax+edx-12+1] |
1476 | lea eax,[eax+edx-12+1] |
1474 | call file_read |
1477 | call file_read |
1475 | 1478 | ||
1476 | ret |
1479 | ret |
1477 | 1480 | ||
1478 | ; \begin{diamond} |
1481 | ; \begin{diamond} |
1479 | hd_find_lfn: |
1482 | hd_find_lfn: |
1480 | ; in: esi->name |
1483 | ; in: esi->name |
1481 | ; out: CF=1 - file not found |
1484 | ; out: CF=1 - file not found |
1482 | ; else CF=0 and edi->direntry, eax=sector |
1485 | ; else CF=0 and edi->direntry, eax=sector |
1483 | ; destroys eax |
1486 | ; destroys eax |
1484 | push esi edi |
1487 | push esi edi |
1485 | push 0 |
1488 | push 0 |
1486 | push 0 |
1489 | push 0 |
1487 | push fat16_root_first |
1490 | push fat16_root_first |
1488 | push fat16_root_next |
1491 | push fat16_root_next |
1489 | mov eax, [ROOT_CLUSTER] |
1492 | mov eax, [ROOT_CLUSTER] |
1490 | cmp [fs_type], 32 |
1493 | cmp [fs_type], 32 |
1491 | jz .fat32 |
1494 | jz .fat32 |
1492 | .loop: |
1495 | .loop: |
1493 | call fat_find_lfn |
1496 | call fat_find_lfn |
1494 | jc .notfound |
1497 | jc .notfound |
1495 | cmp byte [esi], 0 |
1498 | cmp byte [esi], 0 |
1496 | jz .found |
1499 | jz .found |
1497 | test byte [edi+11], 10h |
1500 | test byte [edi+11], 10h |
1498 | jz .notfound |
1501 | jz .notfound |
1499 | and dword [esp+12], 0 |
1502 | and dword [esp+12], 0 |
1500 | mov eax, [edi+20-2] |
1503 | mov eax, [edi+20-2] |
1501 | mov ax, [edi+26] ; cluster |
1504 | mov ax, [edi+26] ; cluster |
1502 | .fat32: |
1505 | .fat32: |
1503 | mov [esp+8], eax |
1506 | mov [esp+8], eax |
1504 | mov dword [esp+4], fat_notroot_first |
1507 | mov dword [esp+4], fat_notroot_first |
1505 | mov dword [esp], fat_notroot_next |
1508 | mov dword [esp], fat_notroot_next |
1506 | jmp .loop |
1509 | jmp .loop |
1507 | .notfound: |
1510 | .notfound: |
1508 | add esp, 16 |
1511 | add esp, 16 |
1509 | pop edi esi |
1512 | pop edi esi |
1510 | stc |
1513 | stc |
1511 | ret |
1514 | ret |
1512 | .found: |
1515 | .found: |
1513 | lea eax, [esp+8] |
1516 | lea eax, [esp+8] |
1514 | cmp dword [eax], 0 |
1517 | cmp dword [eax], 0 |
1515 | jz .root |
1518 | jz .root |
1516 | call fat_get_sector |
1519 | call fat_get_sector |
1517 | jmp .cmn |
1520 | jmp .cmn |
1518 | .root: |
1521 | .root: |
1519 | mov eax, [eax+4] |
1522 | mov eax, [eax+4] |
1520 | add eax, [ROOT_START] |
1523 | add eax, [ROOT_START] |
1521 | .cmn: |
1524 | .cmn: |
1522 | add esp, 20 ; CF=0 |
1525 | add esp, 20 ; CF=0 |
1523 | pop esi |
1526 | pop esi |
1524 | ret |
1527 | ret |
1525 | 1528 | ||
1526 | ;---------------------------------------------------------------- |
1529 | ;---------------------------------------------------------------- |
1527 | ; |
1530 | ; |
1528 | ; fs_HdRead - LFN variant for reading hard disk |
1531 | ; fs_HdRead - LFN variant for reading hard disk |
1529 | ; |
1532 | ; |
1530 | ; esi points to filename |
1533 | ; esi points to filename |
1531 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1534 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1532 | ; may be ebx=0 - start from first byte |
1535 | ; may be ebx=0 - start from first byte |
1533 | ; ecx number of bytes to read, 0+ |
1536 | ; ecx number of bytes to read, 0+ |
1534 | ; edx mem location to return data |
1537 | ; edx mem location to return data |
1535 | ; |
1538 | ; |
1536 | ; ret ebx = bytes read or 0xffffffff file not found |
1539 | ; ret ebx = bytes read or 0xffffffff file not found |
1537 | ; eax = 0 ok read or other = errormsg |
1540 | ; eax = 0 ok read or other = errormsg |
1538 | ; |
1541 | ; |
1539 | ;-------------------------------------------------------------- |
1542 | ;-------------------------------------------------------------- |
1540 | fs_HdRead: |
1543 | fs_HdRead: |
1541 | cmp [fs_type], 16 |
1544 | cmp [fs_type], 16 |
1542 | jz @f |
1545 | jz @f |
1543 | cmp [fs_type], 32 |
1546 | cmp [fs_type], 32 |
1544 | jz @f |
1547 | jz @f |
1545 | cmp [fs_type], 1 |
1548 | cmp [fs_type], 1 |
1546 | jz ntfs_HdRead |
1549 | jz ntfs_HdRead |
1547 | or ebx, -1 |
1550 | or ebx, -1 |
1548 | mov eax, ERROR_UNKNOWN_FS |
1551 | mov eax, ERROR_UNKNOWN_FS |
1549 | ret |
1552 | ret |
1550 | @@: |
1553 | @@: |
1551 | push edi |
1554 | push edi |
1552 | cmp byte [esi], 0 |
1555 | cmp byte [esi], 0 |
1553 | jnz @f |
1556 | jnz @f |
1554 | .noaccess: |
1557 | .noaccess: |
1555 | pop edi |
1558 | pop edi |
1556 | .noaccess_2: |
1559 | .noaccess_2: |
1557 | or ebx, -1 |
1560 | or ebx, -1 |
1558 | mov eax, ERROR_ACCESS_DENIED |
1561 | mov eax, ERROR_ACCESS_DENIED |
1559 | ret |
1562 | ret |
1560 | 1563 | ||
1561 | .noaccess_3: |
1564 | .noaccess_3: |
1562 | add esp,4 |
1565 | add esp,4 |
1563 | .noaccess_1: |
1566 | .noaccess_1: |
1564 | add esp,4 |
1567 | add esp,4 |
1565 | .noaccess_4: |
1568 | .noaccess_4: |
1566 | add esp,4*5 |
1569 | add esp,4*5 |
1567 | jmp .noaccess_2 |
1570 | jmp .noaccess_2 |
1568 | 1571 | ||
1569 | @@: |
1572 | @@: |
1570 | call hd_find_lfn |
1573 | call hd_find_lfn |
1571 | jnc .found |
1574 | jnc .found |
1572 | pop edi |
1575 | pop edi |
1573 | cmp [hd_error],0 |
1576 | cmp [hd_error],0 |
1574 | jne .noaccess_2 |
1577 | jne .noaccess_2 |
1575 | or ebx, -1 |
1578 | or ebx, -1 |
1576 | mov eax, ERROR_FILE_NOT_FOUND |
1579 | mov eax, ERROR_FILE_NOT_FOUND |
1577 | ret |
1580 | ret |
1578 | 1581 | ||
1579 | .found: |
1582 | .found: |
1580 | test byte [edi+11], 0x10 ; do not allow read directories |
1583 | test byte [edi+11], 0x10 ; do not allow read directories |
1581 | jnz .noaccess |
1584 | jnz .noaccess |
1582 | test ebx, ebx |
1585 | test ebx, ebx |
1583 | jz .l1 |
1586 | jz .l1 |
1584 | cmp dword [ebx+4], 0 |
1587 | cmp dword [ebx+4], 0 |
1585 | jz @f |
1588 | jz @f |
1586 | xor ebx, ebx |
1589 | xor ebx, ebx |
1587 | .reteof: |
1590 | .reteof: |
1588 | mov eax, 6 |
1591 | mov eax, 6 |
1589 | pop edi |
1592 | pop edi |
1590 | ret |
1593 | ret |
1591 | @@: |
1594 | @@: |
1592 | mov ebx, [ebx] |
1595 | mov ebx, [ebx] |
1593 | .l1: |
1596 | .l1: |
1594 | push ecx edx |
1597 | push ecx edx |
1595 | push 0 |
1598 | push 0 |
1596 | mov eax, [edi+28] |
1599 | mov eax, [edi+28] |
1597 | sub eax, ebx |
1600 | sub eax, ebx |
1598 | jb .eof |
1601 | jb .eof |
1599 | cmp eax, ecx |
1602 | cmp eax, ecx |
1600 | jae @f |
1603 | jae @f |
1601 | mov ecx, eax |
1604 | mov ecx, eax |
1602 | mov byte [esp], 6 |
1605 | mov byte [esp], 6 |
1603 | @@: |
1606 | @@: |
1604 | mov eax, [edi+20-2] |
1607 | mov eax, [edi+20-2] |
1605 | mov ax, [edi+26] |
1608 | mov ax, [edi+26] |
1606 | ; now eax=cluster, ebx=position, ecx=count, edx=buffer for data |
1609 | ; now eax=cluster, ebx=position, ecx=count, edx=buffer for data |
1607 | .new_cluster: |
1610 | .new_cluster: |
1608 | jecxz .new_sector |
1611 | jecxz .new_sector |
1609 | test eax, eax |
1612 | test eax, eax |
1610 | jz .eof |
1613 | jz .eof |
1611 | cmp eax, [fatRESERVED] |
1614 | cmp eax, [fatRESERVED] |
1612 | jae .eof |
1615 | jae .eof |
1613 | mov [cluster_tmp], eax |
1616 | mov [cluster_tmp], eax |
1614 | dec eax |
1617 | dec eax |
1615 | dec eax |
1618 | dec eax |
1616 | mov edi, [SECTORS_PER_CLUSTER] |
1619 | mov edi, [SECTORS_PER_CLUSTER] |
1617 | imul eax, edi |
1620 | imul eax, edi |
1618 | add eax, [DATA_START] |
1621 | add eax, [DATA_START] |
1619 | .new_sector: |
1622 | .new_sector: |
1620 | test ecx, ecx |
1623 | test ecx, ecx |
1621 | jz .done |
1624 | jz .done |
1622 | sub ebx, 512 |
1625 | sub ebx, 512 |
1623 | jae .skip |
1626 | jae .skip |
1624 | add ebx, 512 |
1627 | add ebx, 512 |
1625 | jnz .force_buf |
1628 | jnz .force_buf |
1626 | cmp ecx, 512 |
1629 | cmp ecx, 512 |
1627 | jb .force_buf |
1630 | jb .force_buf |
1628 | ; we may read directly to given buffer |
1631 | ; we may read directly to given buffer |
1629 | push ebx |
1632 | push ebx |
1630 | mov ebx, edx |
1633 | mov ebx, edx |
1631 | call hd_read |
1634 | call hd_read |
1632 | cmp [hd_error],0 |
1635 | cmp [hd_error],0 |
1633 | jne .noaccess_1 |
1636 | jne .noaccess_1 |
1634 | pop ebx |
1637 | pop ebx |
1635 | add edx, 512 |
1638 | add edx, 512 |
1636 | sub ecx, 512 |
1639 | sub ecx, 512 |
1637 | jmp .skip |
1640 | jmp .skip |
1638 | .force_buf: |
1641 | .force_buf: |
1639 | ; we must read sector to temporary buffer and then copy it to destination |
1642 | ; we must read sector to temporary buffer and then copy it to destination |
1640 | push eax ebx |
1643 | push eax ebx |
1641 | mov ebx, buffer |
1644 | mov ebx, buffer |
1642 | call hd_read |
1645 | call hd_read |
1643 | cmp [hd_error],0 |
1646 | cmp [hd_error],0 |
1644 | jne .noaccess_3 |
1647 | jne .noaccess_3 |
1645 | 1648 | ||
1646 | mov eax, ebx |
1649 | mov eax, ebx |
1647 | pop ebx |
1650 | pop ebx |
1648 | add eax, ebx |
1651 | add eax, ebx |
1649 | push ecx |
1652 | push ecx |
1650 | add ecx, ebx |
1653 | add ecx, ebx |
1651 | cmp ecx, 512 |
1654 | cmp ecx, 512 |
1652 | jbe @f |
1655 | jbe @f |
1653 | mov ecx, 512 |
1656 | mov ecx, 512 |
1654 | @@: |
1657 | @@: |
1655 | sub ecx, ebx |
1658 | sub ecx, ebx |
1656 | mov ebx, edx |
1659 | mov ebx, edx |
1657 | call memmove |
1660 | call memmove |
1658 | add edx, ecx |
1661 | add edx, ecx |
1659 | sub [esp], ecx |
1662 | sub [esp], ecx |
1660 | pop ecx |
1663 | pop ecx |
1661 | pop eax |
1664 | pop eax |
1662 | xor ebx, ebx |
1665 | xor ebx, ebx |
1663 | .skip: |
1666 | .skip: |
1664 | inc eax |
1667 | inc eax |
1665 | dec edi |
1668 | dec edi |
1666 | jnz .new_sector |
1669 | jnz .new_sector |
1667 | mov eax, [cluster_tmp] |
1670 | mov eax, [cluster_tmp] |
1668 | call get_FAT |
1671 | call get_FAT |
1669 | cmp [hd_error],0 |
1672 | cmp [hd_error],0 |
1670 | jne .noaccess_4 |
1673 | jne .noaccess_4 |
1671 | 1674 | ||
1672 | jmp .new_cluster |
1675 | jmp .new_cluster |
1673 | .done: |
1676 | .done: |
1674 | mov ebx, edx |
1677 | mov ebx, edx |
1675 | pop eax edx ecx edi |
1678 | pop eax edx ecx edi |
1676 | sub ebx, edx |
1679 | sub ebx, edx |
1677 | ret |
1680 | ret |
1678 | .eof: |
1681 | .eof: |
1679 | mov ebx, edx |
1682 | mov ebx, edx |
1680 | pop eax edx ecx |
1683 | pop eax edx ecx |
1681 | sub ebx, edx |
1684 | sub ebx, edx |
1682 | jmp .reteof |
1685 | jmp .reteof |
1683 | 1686 | ||
1684 | ;---------------------------------------------------------------- |
1687 | ;---------------------------------------------------------------- |
1685 | ; |
1688 | ; |
1686 | ; fs_HdReadFolder - LFN variant for reading hard disk folder |
1689 | ; fs_HdReadFolder - LFN variant for reading hard disk folder |
1687 | ; |
1690 | ; |
1688 | ; esi points to filename |
1691 | ; esi points to filename |
1689 | ; ebx pointer to structure 32-bit number = first wanted block, 0+ |
1692 | ; ebx pointer to structure 32-bit number = first wanted block, 0+ |
1690 | ; & flags (bitfields) |
1693 | ; & flags (bitfields) |
1691 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
1694 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
1692 | ; ecx number of blocks to read, 0+ |
1695 | ; ecx number of blocks to read, 0+ |
1693 | ; edx mem location to return data |
1696 | ; edx mem location to return data |
1694 | ; |
1697 | ; |
1695 | ; ret ebx = blocks read or 0xffffffff folder not found |
1698 | ; ret ebx = blocks read or 0xffffffff folder not found |
1696 | ; eax = 0 ok read or other = errormsg |
1699 | ; eax = 0 ok read or other = errormsg |
1697 | ; |
1700 | ; |
1698 | ;-------------------------------------------------------------- |
1701 | ;-------------------------------------------------------------- |
1699 | fs_HdReadFolder: |
1702 | fs_HdReadFolder: |
1700 | cmp [fs_type], 1 |
1703 | cmp [fs_type], 1 |
1701 | jz ntfs_HdReadFolder |
1704 | jz ntfs_HdReadFolder |
1702 | cmp [fs_type], 16 |
1705 | cmp [fs_type], 16 |
1703 | jz @f |
1706 | jz @f |
1704 | cmp [fs_type], 32 |
1707 | cmp [fs_type], 32 |
1705 | jz @f |
1708 | jz @f |
1706 | push ERROR_UNSUPPORTED_FS |
1709 | push ERROR_UNSUPPORTED_FS |
1707 | pop eax |
1710 | pop eax |
1708 | or ebx, -1 |
1711 | or ebx, -1 |
1709 | ret |
1712 | ret |
1710 | @@: |
1713 | @@: |
1711 | mov eax, [ROOT_CLUSTER] |
1714 | mov eax, [ROOT_CLUSTER] |
1712 | push edi |
1715 | push edi |
1713 | cmp byte [esi], 0 |
1716 | cmp byte [esi], 0 |
1714 | jz .doit |
1717 | jz .doit |
1715 | call hd_find_lfn |
1718 | call hd_find_lfn |
1716 | jnc .found |
1719 | jnc .found |
1717 | pop edi |
1720 | pop edi |
1718 | or ebx, -1 |
1721 | or ebx, -1 |
1719 | mov eax, ERROR_FILE_NOT_FOUND |
1722 | mov eax, ERROR_FILE_NOT_FOUND |
1720 | ret |
1723 | ret |
1721 | .found: |
1724 | .found: |
1722 | test byte [edi+11], 0x10 ; do not allow read files |
1725 | test byte [edi+11], 0x10 ; do not allow read files |
1723 | jnz .found_dir |
1726 | jnz .found_dir |
1724 | pop edi |
1727 | pop edi |
1725 | or ebx, -1 |
1728 | or ebx, -1 |
1726 | mov eax, ERROR_ACCESS_DENIED |
1729 | mov eax, ERROR_ACCESS_DENIED |
1727 | ret |
1730 | ret |
1728 | .found_dir: |
1731 | .found_dir: |
1729 | mov eax, [edi+20-2] |
1732 | mov eax, [edi+20-2] |
1730 | mov ax, [edi+26] ; eax=cluster |
1733 | mov ax, [edi+26] ; eax=cluster |
1731 | .doit: |
1734 | .doit: |
1732 | push esi ecx |
1735 | push esi ecx |
1733 | push ebp |
1736 | push ebp |
1734 | sub esp, 262*2 ; reserve space for LFN |
1737 | sub esp, 262*2 ; reserve space for LFN |
1735 | mov ebp, esp |
1738 | mov ebp, esp |
1736 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE name |
1739 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE name |
1737 | mov ebx, [ebx] |
1740 | mov ebx, [ebx] |
1738 | ; init header |
1741 | ; init header |
1739 | push eax ecx |
1742 | push eax ecx |
1740 | mov edi, edx |
1743 | mov edi, edx |
1741 | mov ecx, 32/4 |
1744 | mov ecx, 32/4 |
1742 | xor eax, eax |
1745 | xor eax, eax |
1743 | rep stosd |
1746 | rep stosd |
1744 | pop ecx eax |
1747 | pop ecx eax |
1745 | mov byte [edx], 1 ; version |
1748 | mov byte [edx], 1 ; version |
1746 | mov esi, edi ; esi points to BDFE |
1749 | mov esi, edi ; esi points to BDFE |
1747 | .new_cluster: |
1750 | .new_cluster: |
1748 | mov [cluster_tmp], eax |
1751 | mov [cluster_tmp], eax |
1749 | test eax, eax |
1752 | test eax, eax |
1750 | jnz @f |
1753 | jnz @f |
1751 | cmp [fs_type], 32 |
1754 | cmp [fs_type], 32 |
1752 | jz .notfound |
1755 | jz .notfound |
1753 | mov eax, [ROOT_START] |
1756 | mov eax, [ROOT_START] |
1754 | push [ROOT_SECTORS] |
1757 | push [ROOT_SECTORS] |
1755 | push ebx |
1758 | push ebx |
1756 | jmp .new_sector |
1759 | jmp .new_sector |
1757 | @@: |
1760 | @@: |
1758 | dec eax |
1761 | dec eax |
1759 | dec eax |
1762 | dec eax |
1760 | imul eax, [SECTORS_PER_CLUSTER] |
1763 | imul eax, [SECTORS_PER_CLUSTER] |
1761 | push [SECTORS_PER_CLUSTER] |
1764 | push [SECTORS_PER_CLUSTER] |
1762 | add eax, [DATA_START] |
1765 | add eax, [DATA_START] |
1763 | push ebx |
1766 | push ebx |
1764 | .new_sector: |
1767 | .new_sector: |
1765 | mov ebx, buffer |
1768 | mov ebx, buffer |
1766 | mov edi, ebx |
1769 | mov edi, ebx |
1767 | call hd_read |
1770 | call hd_read |
1768 | cmp [hd_error], 0 |
1771 | cmp [hd_error], 0 |
1769 | jnz .notfound2 |
1772 | jnz .notfound2 |
1770 | add ebx, 512 |
1773 | add ebx, 512 |
1771 | push eax |
1774 | push eax |
1772 | .l1: |
1775 | .l1: |
1773 | call fat_get_name |
1776 | call fat_get_name |
1774 | jc .l2 |
1777 | jc .l2 |
1775 | cmp byte [edi+11], 0xF |
1778 | cmp byte [edi+11], 0xF |
1776 | jnz .do_bdfe |
1779 | jnz .do_bdfe |
1777 | add edi, 0x20 |
1780 | add edi, 0x20 |
1778 | cmp edi, ebx |
1781 | cmp edi, ebx |
1779 | jb .do_bdfe |
1782 | jb .do_bdfe |
1780 | pop eax |
1783 | pop eax |
1781 | inc eax |
1784 | inc eax |
1782 | dec dword [esp+4] |
1785 | dec dword [esp+4] |
1783 | jnz @f |
1786 | jnz @f |
1784 | mov eax, [cluster_tmp] |
1787 | mov eax, [cluster_tmp] |
1785 | test eax, eax |
1788 | test eax, eax |
1786 | jz .done |
1789 | jz .done |
1787 | call get_FAT |
1790 | call get_FAT |
1788 | cmp [hd_error], 0 |
1791 | cmp [hd_error], 0 |
1789 | jnz .notfound2 |
1792 | jnz .notfound2 |
1790 | cmp eax, 2 |
1793 | cmp eax, 2 |
1791 | jb .done |
1794 | jb .done |
1792 | cmp eax, [fatRESERVED] |
1795 | cmp eax, [fatRESERVED] |
1793 | jae .done |
1796 | jae .done |
1794 | push eax |
1797 | push eax |
1795 | mov eax, [SECTORS_PER_CLUSTER] |
1798 | mov eax, [SECTORS_PER_CLUSTER] |
1796 | mov [esp+8], eax |
1799 | mov [esp+8], eax |
1797 | pop eax |
1800 | pop eax |
1798 | mov [cluster_tmp], eax |
1801 | mov [cluster_tmp], eax |
1799 | dec eax |
1802 | dec eax |
1800 | dec eax |
1803 | dec eax |
1801 | imul eax, [SECTORS_PER_CLUSTER] |
1804 | imul eax, [SECTORS_PER_CLUSTER] |
1802 | add eax, [DATA_START] |
1805 | add eax, [DATA_START] |
1803 | @@: |
1806 | @@: |
1804 | mov ebx, buffer |
1807 | mov ebx, buffer |
1805 | mov edi, ebx |
1808 | mov edi, ebx |
1806 | call hd_read |
1809 | call hd_read |
1807 | cmp [hd_error], 0 |
1810 | cmp [hd_error], 0 |
1808 | jnz .notfound2 |
1811 | jnz .notfound2 |
1809 | add ebx, 512 |
1812 | add ebx, 512 |
1810 | push eax |
1813 | push eax |
1811 | .do_bdfe: |
1814 | .do_bdfe: |
1812 | inc dword [edx+8] ; new file found |
1815 | inc dword [edx+8] ; new file found |
1813 | dec dword [esp+4] |
1816 | dec dword [esp+4] |
1814 | jns .l2 |
1817 | jns .l2 |
1815 | dec ecx |
1818 | dec ecx |
1816 | js .l2 |
1819 | js .l2 |
1817 | inc dword [edx+4] ; new file block copied |
1820 | inc dword [edx+4] ; new file block copied |
1818 | call fat_entry_to_bdfe |
1821 | call fat_entry_to_bdfe |
1819 | .l2: |
1822 | .l2: |
1820 | add edi, 0x20 |
1823 | add edi, 0x20 |
1821 | cmp edi, ebx |
1824 | cmp edi, ebx |
1822 | jb .l1 |
1825 | jb .l1 |
1823 | pop eax |
1826 | pop eax |
1824 | inc eax |
1827 | inc eax |
1825 | dec dword [esp+4] |
1828 | dec dword [esp+4] |
1826 | jnz .new_sector |
1829 | jnz .new_sector |
1827 | mov eax, [cluster_tmp] |
1830 | mov eax, [cluster_tmp] |
1828 | test eax, eax |
1831 | test eax, eax |
1829 | jz .done |
1832 | jz .done |
1830 | call get_FAT |
1833 | call get_FAT |
1831 | cmp [hd_error], 0 |
1834 | cmp [hd_error], 0 |
1832 | jnz .notfound2 |
1835 | jnz .notfound2 |
1833 | cmp eax, 2 |
1836 | cmp eax, 2 |
1834 | jb .done |
1837 | jb .done |
1835 | cmp eax, [fatRESERVED] |
1838 | cmp eax, [fatRESERVED] |
1836 | jae .done |
1839 | jae .done |
1837 | push eax |
1840 | push eax |
1838 | mov eax, [SECTORS_PER_CLUSTER] |
1841 | mov eax, [SECTORS_PER_CLUSTER] |
1839 | mov [esp+8], eax |
1842 | mov [esp+8], eax |
1840 | pop eax |
1843 | pop eax |
1841 | pop ebx |
1844 | pop ebx |
1842 | add esp, 4 |
1845 | add esp, 4 |
1843 | jmp .new_cluster |
1846 | jmp .new_cluster |
1844 | .notfound2: |
1847 | .notfound2: |
1845 | add esp, 8 |
1848 | add esp, 8 |
1846 | .notfound: |
1849 | .notfound: |
1847 | add esp, 262*2+4 |
1850 | add esp, 262*2+4 |
1848 | pop ebp ecx esi edi |
1851 | pop ebp ecx esi edi |
1849 | mov eax, ERROR_FILE_NOT_FOUND |
1852 | mov eax, ERROR_FILE_NOT_FOUND |
1850 | or ebx, -1 |
1853 | or ebx, -1 |
1851 | ret |
1854 | ret |
1852 | .done: |
1855 | .done: |
1853 | add esp, 262*2+4+8 |
1856 | add esp, 262*2+4+8 |
1854 | pop ebp |
1857 | pop ebp |
1855 | mov ebx, [edx+4] |
1858 | mov ebx, [edx+4] |
1856 | xor eax, eax |
1859 | xor eax, eax |
1857 | dec ecx |
1860 | dec ecx |
1858 | js @f |
1861 | js @f |
1859 | mov al, ERROR_END_OF_FILE |
1862 | mov al, ERROR_END_OF_FILE |
1860 | @@: |
1863 | @@: |
1861 | pop ecx esi edi |
1864 | pop ecx esi edi |
1862 | ret |
1865 | ret |
1863 | 1866 | ||
1864 | fat16_root_next: |
1867 | fat16_root_next: |
1865 | cmp edi, buffer+0x200-0x20 |
1868 | cmp edi, buffer+0x200-0x20 |
1866 | jae fat16_root_next_sector |
1869 | jae fat16_root_next_sector |
1867 | add edi, 0x20 |
1870 | add edi, 0x20 |
1868 | ret ; CF=0 |
1871 | ret ; CF=0 |
1869 | fat16_root_next_sector: |
1872 | fat16_root_next_sector: |
1870 | ; read next sector |
1873 | ; read next sector |
1871 | push [longname_sec2] |
1874 | push [longname_sec2] |
1872 | pop [longname_sec1] |
1875 | pop [longname_sec1] |
1873 | push ecx |
1876 | push ecx |
1874 | mov ecx, [eax+4] |
1877 | mov ecx, [eax+4] |
1875 | push ecx |
1878 | push ecx |
1876 | add ecx, [ROOT_START] |
1879 | add ecx, [ROOT_START] |
1877 | mov [longname_sec2], ecx |
1880 | mov [longname_sec2], ecx |
1878 | pop ecx |
1881 | pop ecx |
1879 | inc ecx |
1882 | inc ecx |
1880 | mov [eax+4], ecx |
1883 | mov [eax+4], ecx |
1881 | cmp ecx, [ROOT_SECTORS] |
1884 | cmp ecx, [ROOT_SECTORS] |
1882 | pop ecx |
1885 | pop ecx |
1883 | jae fat16_root_first.readerr |
1886 | jae fat16_root_first.readerr |
1884 | fat16_root_first: |
1887 | fat16_root_first: |
1885 | mov eax, [eax+4] |
1888 | mov eax, [eax+4] |
1886 | add eax, [ROOT_START] |
1889 | add eax, [ROOT_START] |
1887 | push ebx |
1890 | push ebx |
1888 | mov edi, buffer |
1891 | mov edi, buffer |
1889 | mov ebx, edi |
1892 | mov ebx, edi |
1890 | call hd_read |
1893 | call hd_read |
1891 | pop ebx |
1894 | pop ebx |
1892 | cmp [hd_error], 0 |
1895 | cmp [hd_error], 0 |
1893 | jnz .readerr |
1896 | jnz .readerr |
1894 | ret ; CF=0 |
1897 | ret ; CF=0 |
1895 | .readerr: |
1898 | .readerr: |
1896 | stc |
1899 | stc |
1897 | ret |
1900 | ret |
1898 | fat16_root_begin_write: |
1901 | fat16_root_begin_write: |
1899 | push edi eax |
1902 | push edi eax |
1900 | call fat16_root_first |
1903 | call fat16_root_first |
1901 | pop eax edi |
1904 | pop eax edi |
1902 | ret |
1905 | ret |
1903 | fat16_root_end_write: |
1906 | fat16_root_end_write: |
1904 | pusha |
1907 | pusha |
1905 | mov eax, [eax+4] |
1908 | mov eax, [eax+4] |
1906 | add eax, [ROOT_START] |
1909 | add eax, [ROOT_START] |
1907 | mov ebx, buffer |
1910 | mov ebx, buffer |
1908 | call hd_write |
1911 | call hd_write |
1909 | popa |
1912 | popa |
1910 | ret |
1913 | ret |
1911 | fat16_root_next_write: |
1914 | fat16_root_next_write: |
1912 | cmp edi, buffer+0x200 |
1915 | cmp edi, buffer+0x200 |
1913 | jae @f |
1916 | jae @f |
1914 | ret |
1917 | ret |
1915 | @@: |
1918 | @@: |
1916 | call fat16_root_end_write |
1919 | call fat16_root_end_write |
1917 | jmp fat16_root_next_sector |
1920 | jmp fat16_root_next_sector |
1918 | fat16_root_extend_dir: |
1921 | fat16_root_extend_dir: |
1919 | stc |
1922 | stc |
1920 | ret |
1923 | ret |
1921 | 1924 | ||
1922 | fat_notroot_next: |
1925 | fat_notroot_next: |
1923 | cmp edi, buffer+0x200-0x20 |
1926 | cmp edi, buffer+0x200-0x20 |
1924 | jae fat_notroot_next_sector |
1927 | jae fat_notroot_next_sector |
1925 | add edi, 0x20 |
1928 | add edi, 0x20 |
1926 | ret ; CF=0 |
1929 | ret ; CF=0 |
1927 | fat_notroot_next_sector: |
1930 | fat_notroot_next_sector: |
1928 | push [longname_sec2] |
1931 | push [longname_sec2] |
1929 | pop [longname_sec1] |
1932 | pop [longname_sec1] |
1930 | push eax |
1933 | push eax |
1931 | call fat_get_sector |
1934 | call fat_get_sector |
1932 | mov [longname_sec2], eax |
1935 | mov [longname_sec2], eax |
1933 | pop eax |
1936 | pop eax |
1934 | push ecx |
1937 | push ecx |
1935 | mov ecx, [eax+4] |
1938 | mov ecx, [eax+4] |
1936 | inc ecx |
1939 | inc ecx |
1937 | cmp ecx, [SECTORS_PER_CLUSTER] |
1940 | cmp ecx, [SECTORS_PER_CLUSTER] |
1938 | jae fat_notroot_next_cluster |
1941 | jae fat_notroot_next_cluster |
1939 | mov [eax+4], ecx |
1942 | mov [eax+4], ecx |
1940 | jmp @f |
1943 | jmp @f |
1941 | fat_notroot_next_cluster: |
1944 | fat_notroot_next_cluster: |
1942 | push eax |
1945 | push eax |
1943 | mov eax, [eax] |
1946 | mov eax, [eax] |
1944 | call get_FAT |
1947 | call get_FAT |
1945 | mov ecx, eax |
1948 | mov ecx, eax |
1946 | pop eax |
1949 | pop eax |
1947 | cmp [hd_error], 0 |
1950 | cmp [hd_error], 0 |
1948 | jnz fat_notroot_next_err |
1951 | jnz fat_notroot_next_err |
1949 | cmp ecx, [fatRESERVED] |
1952 | cmp ecx, [fatRESERVED] |
1950 | jae fat_notroot_next_err |
1953 | jae fat_notroot_next_err |
1951 | mov [eax], ecx |
1954 | mov [eax], ecx |
1952 | and dword [eax+4], 0 |
1955 | and dword [eax+4], 0 |
1953 | @@: |
1956 | @@: |
1954 | pop ecx |
1957 | pop ecx |
1955 | fat_notroot_first: |
1958 | fat_notroot_first: |
1956 | call fat_get_sector |
1959 | call fat_get_sector |
1957 | push ebx |
1960 | push ebx |
1958 | mov edi, buffer |
1961 | mov edi, buffer |
1959 | mov ebx, edi |
1962 | mov ebx, edi |
1960 | call hd_read |
1963 | call hd_read |
1961 | pop ebx |
1964 | pop ebx |
1962 | cmp [hd_error], 0 |
1965 | cmp [hd_error], 0 |
1963 | jnz @f |
1966 | jnz @f |
1964 | ret ; CF=0 |
1967 | ret ; CF=0 |
1965 | fat_notroot_next_err: |
1968 | fat_notroot_next_err: |
1966 | pop ecx |
1969 | pop ecx |
1967 | @@: |
1970 | @@: |
1968 | stc |
1971 | stc |
1969 | ret |
1972 | ret |
1970 | fat_notroot_begin_write: |
1973 | fat_notroot_begin_write: |
1971 | push eax edi |
1974 | push eax edi |
1972 | call fat_notroot_first |
1975 | call fat_notroot_first |
1973 | pop edi eax |
1976 | pop edi eax |
1974 | ret |
1977 | ret |
1975 | fat_notroot_end_write: |
1978 | fat_notroot_end_write: |
1976 | call fat_get_sector |
1979 | call fat_get_sector |
1977 | push ebx |
1980 | push ebx |
1978 | mov ebx, buffer |
1981 | mov ebx, buffer |
1979 | call hd_write |
1982 | call hd_write |
1980 | pop ebx |
1983 | pop ebx |
1981 | ret |
1984 | ret |
1982 | fat_notroot_next_write: |
1985 | fat_notroot_next_write: |
1983 | cmp edi, buffer+0x200 |
1986 | cmp edi, buffer+0x200 |
1984 | jae @f |
1987 | jae @f |
1985 | ret |
1988 | ret |
1986 | @@: |
1989 | @@: |
1987 | push eax |
1990 | push eax |
1988 | call fat_notroot_end_write |
1991 | call fat_notroot_end_write |
1989 | pop eax |
1992 | pop eax |
1990 | jmp fat_notroot_next_sector |
1993 | jmp fat_notroot_next_sector |
1991 | fat_notroot_extend_dir: |
1994 | fat_notroot_extend_dir: |
1992 | push eax |
1995 | push eax |
1993 | mov eax, [eax] |
1996 | mov eax, [eax] |
1994 | call get_free_FAT |
1997 | call get_free_FAT |
1995 | jnc .found |
1998 | jnc .found |
1996 | pop eax |
1999 | pop eax |
1997 | ret ; CF=1 |
2000 | ret ; CF=1 |
1998 | .found: |
2001 | .found: |
1999 | push edx |
2002 | push edx |
2000 | mov edx, [fatEND] |
2003 | mov edx, [fatEND] |
2001 | call set_FAT |
2004 | call set_FAT |
2002 | mov edx, eax |
2005 | mov edx, eax |
2003 | mov eax, [esp+4] |
2006 | mov eax, [esp+4] |
2004 | mov eax, [eax] |
2007 | mov eax, [eax] |
2005 | push edx |
2008 | push edx |
2006 | call set_FAT |
2009 | call set_FAT |
2007 | pop edx |
2010 | pop edx |
2008 | cmp [hd_error], 0 |
2011 | cmp [hd_error], 0 |
2009 | jz @f |
2012 | jz @f |
2010 | pop edx |
2013 | pop edx |
2011 | pop eax |
2014 | pop eax |
2012 | stc |
2015 | stc |
2013 | ret |
2016 | ret |
2014 | @@: |
2017 | @@: |
2015 | push ecx |
2018 | push ecx |
2016 | or ecx, -1 |
2019 | or ecx, -1 |
2017 | call add_disk_free_space |
2020 | call add_disk_free_space |
2018 | ; zero new cluster |
2021 | ; zero new cluster |
2019 | mov ecx, 512/4 |
2022 | mov ecx, 512/4 |
2020 | mov edi, buffer |
2023 | mov edi, buffer |
2021 | push edi |
2024 | push edi |
2022 | xor eax, eax |
2025 | xor eax, eax |
2023 | rep stosd |
2026 | rep stosd |
2024 | pop edi |
2027 | pop edi |
2025 | pop ecx |
2028 | pop ecx |
2026 | mov eax, [esp+4] |
2029 | mov eax, [esp+4] |
2027 | mov [eax], edx |
2030 | mov [eax], edx |
2028 | and dword [eax+4], 0 |
2031 | and dword [eax+4], 0 |
2029 | pop edx |
2032 | pop edx |
2030 | mov eax, [eax] |
2033 | mov eax, [eax] |
2031 | dec eax |
2034 | dec eax |
2032 | dec eax |
2035 | dec eax |
2033 | push ebx ecx |
2036 | push ebx ecx |
2034 | mov ecx, [SECTORS_PER_CLUSTER] |
2037 | mov ecx, [SECTORS_PER_CLUSTER] |
2035 | imul eax, ecx |
2038 | imul eax, ecx |
2036 | add eax, [DATA_START] |
2039 | add eax, [DATA_START] |
2037 | mov ebx, edi |
2040 | mov ebx, edi |
2038 | @@: |
2041 | @@: |
2039 | call hd_write |
2042 | call hd_write |
2040 | inc eax |
2043 | inc eax |
2041 | loop @b |
2044 | loop @b |
2042 | pop ecx ebx eax |
2045 | pop ecx ebx eax |
2043 | clc |
2046 | clc |
2044 | ret |
2047 | ret |
2045 | 2048 | ||
2046 | fat_get_sector: |
2049 | fat_get_sector: |
2047 | push ecx |
2050 | push ecx |
2048 | mov ecx, [eax] |
2051 | mov ecx, [eax] |
2049 | dec ecx |
2052 | dec ecx |
2050 | dec ecx |
2053 | dec ecx |
2051 | imul ecx, [SECTORS_PER_CLUSTER] |
2054 | imul ecx, [SECTORS_PER_CLUSTER] |
2052 | add ecx, [DATA_START] |
2055 | add ecx, [DATA_START] |
2053 | add ecx, [eax+4] |
2056 | add ecx, [eax+4] |
2054 | mov eax, ecx |
2057 | mov eax, ecx |
2055 | pop ecx |
2058 | pop ecx |
2056 | ret |
2059 | ret |
2057 | 2060 | ||
2058 | ;---------------------------------------------------------------- |
2061 | ;---------------------------------------------------------------- |
2059 | ; |
2062 | ; |
2060 | ; fs_HdRewrite - LFN variant for writing hard disk |
2063 | ; fs_HdRewrite - LFN variant for writing hard disk |
2061 | ; |
2064 | ; |
2062 | ; esi points to filename |
2065 | ; esi points to filename |
2063 | ; ebx ignored (reserved) |
2066 | ; ebx ignored (reserved) |
2064 | ; ecx number of bytes to write, 0+ |
2067 | ; ecx number of bytes to write, 0+ |
2065 | ; edx mem location to data |
2068 | ; edx mem location to data |
2066 | ; |
2069 | ; |
2067 | ; ret ebx = number of written bytes |
2070 | ; ret ebx = number of written bytes |
2068 | ; eax = 0 ok read or other = errormsg |
2071 | ; eax = 0 ok read or other = errormsg |
2069 | ; |
2072 | ; |
2070 | ;-------------------------------------------------------------- |
2073 | ;-------------------------------------------------------------- |
2071 | fshrad: |
2074 | fshrad: |
2072 | mov eax, ERROR_ACCESS_DENIED |
2075 | mov eax, ERROR_ACCESS_DENIED |
2073 | xor ebx, ebx |
2076 | xor ebx, ebx |
2074 | ret |
2077 | ret |
2075 | fshrfs: |
2078 | fshrfs: |
2076 | mov eax, ERROR_UNKNOWN_FS |
2079 | mov eax, ERROR_UNKNOWN_FS |
2077 | xor ebx, ebx |
2080 | xor ebx, ebx |
2078 | ret |
2081 | ret |
2079 | 2082 | ||
2080 | fs_HdCreateFolder: |
2083 | fs_HdCreateFolder: |
2081 | mov al, 1 |
2084 | mov al, 1 |
2082 | jmp fs_HdRewrite.common |
2085 | jmp fs_HdRewrite.common |
2083 | 2086 | ||
2084 | fs_HdRewrite: |
2087 | fs_HdRewrite: |
2085 | xor eax, eax |
2088 | xor eax, eax |
2086 | .common: |
2089 | .common: |
2087 | cmp [fs_type], 1 |
2090 | cmp [fs_type], 1 |
2088 | jz ntfs_HdRewrite |
2091 | jz ntfs_HdRewrite |
2089 | cmp [fs_type], 16 |
2092 | cmp [fs_type], 16 |
2090 | jz @f |
2093 | jz @f |
2091 | cmp [fs_type], 32 |
2094 | cmp [fs_type], 32 |
2092 | jnz fshrfs |
2095 | jnz fshrfs |
2093 | @@: |
2096 | @@: |
2094 | cmp byte [esi], 0 |
2097 | cmp byte [esi], 0 |
2095 | jz fshrad |
2098 | jz fshrad |
2096 | pushad |
2099 | pushad |
2097 | xor ebp, ebp |
2100 | xor ebp, ebp |
2098 | push esi |
2101 | push esi |
2099 | @@: |
2102 | @@: |
2100 | lodsb |
2103 | lodsb |
2101 | test al, al |
2104 | test al, al |
2102 | jz @f |
2105 | jz @f |
2103 | cmp al, '/' |
2106 | cmp al, '/' |
2104 | jnz @b |
2107 | jnz @b |
2105 | lea ebp, [esi-1] |
2108 | lea ebp, [esi-1] |
2106 | jmp @b |
2109 | jmp @b |
2107 | @@: |
2110 | @@: |
2108 | pop esi |
2111 | pop esi |
2109 | test ebp, ebp |
2112 | test ebp, ebp |
2110 | jnz .noroot |
2113 | jnz .noroot |
2111 | mov ebp, [ROOT_CLUSTER] |
2114 | mov ebp, [ROOT_CLUSTER] |
2112 | cmp [fs_type], 32 |
2115 | cmp [fs_type], 32 |
2113 | jz .pushnotroot |
2116 | jz .pushnotroot |
2114 | push fat16_root_extend_dir |
2117 | push fat16_root_extend_dir |
2115 | push fat16_root_end_write |
2118 | push fat16_root_end_write |
2116 | push fat16_root_next_write |
2119 | push fat16_root_next_write |
2117 | push fat16_root_begin_write |
2120 | push fat16_root_begin_write |
2118 | xor ebp, ebp |
2121 | xor ebp, ebp |
2119 | push ebp |
2122 | push ebp |
2120 | push ebp |
2123 | push ebp |
2121 | push fat16_root_first |
2124 | push fat16_root_first |
2122 | push fat16_root_next |
2125 | push fat16_root_next |
2123 | jmp .common1 |
2126 | jmp .common1 |
2124 | .noroot: |
2127 | .noroot: |
2125 | mov eax, ERROR_ACCESS_DENIED |
2128 | mov eax, ERROR_ACCESS_DENIED |
2126 | cmp byte [ebp+1], 0 |
2129 | cmp byte [ebp+1], 0 |
2127 | jz .ret1 |
2130 | jz .ret1 |
2128 | ; check existence |
2131 | ; check existence |
2129 | mov byte [ebp], 0 |
2132 | mov byte [ebp], 0 |
2130 | call hd_find_lfn |
2133 | call hd_find_lfn |
2131 | mov byte [ebp], '/' |
2134 | mov byte [ebp], '/' |
2132 | lea esi, [ebp+1] |
2135 | lea esi, [ebp+1] |
2133 | jnc @f |
2136 | jnc @f |
2134 | mov eax, ERROR_FILE_NOT_FOUND |
2137 | mov eax, ERROR_FILE_NOT_FOUND |
2135 | .ret1: |
2138 | .ret1: |
2136 | mov [esp+28], eax |
2139 | mov [esp+28], eax |
2137 | popad |
2140 | popad |
2138 | xor ebx, ebx |
2141 | xor ebx, ebx |
2139 | ret |
2142 | ret |
2140 | @@: |
2143 | @@: |
2141 | test byte [edi+11], 0x10 ; must be directory |
2144 | test byte [edi+11], 0x10 ; must be directory |
2142 | mov eax, ERROR_ACCESS_DENIED |
2145 | mov eax, ERROR_ACCESS_DENIED |
2143 | jz .ret1 |
2146 | jz .ret1 |
2144 | mov ebp, [edi+20-2] |
2147 | mov ebp, [edi+20-2] |
2145 | mov bp, [edi+26] ; ebp=cluster |
2148 | mov bp, [edi+26] ; ebp=cluster |
2146 | mov eax, ERROR_FAT_TABLE |
2149 | mov eax, ERROR_FAT_TABLE |
2147 | cmp ebp, 2 |
2150 | cmp ebp, 2 |
2148 | jb .ret1 |
2151 | jb .ret1 |
2149 | .pushnotroot: |
2152 | .pushnotroot: |
2150 | push fat_notroot_extend_dir |
2153 | push fat_notroot_extend_dir |
2151 | push fat_notroot_end_write |
2154 | push fat_notroot_end_write |
2152 | push fat_notroot_next_write |
2155 | push fat_notroot_next_write |
2153 | push fat_notroot_begin_write |
2156 | push fat_notroot_begin_write |
2154 | push 0 |
2157 | push 0 |
2155 | push ebp |
2158 | push ebp |
2156 | push fat_notroot_first |
2159 | push fat_notroot_first |
2157 | push fat_notroot_next |
2160 | push fat_notroot_next |
2158 | .common1: |
2161 | .common1: |
2159 | call fat_find_lfn |
2162 | call fat_find_lfn |
2160 | jc .notfound |
2163 | jc .notfound |
2161 | ; found |
2164 | ; found |
2162 | test byte [edi+11], 10h |
2165 | test byte [edi+11], 10h |
2163 | jz .exists_file |
2166 | jz .exists_file |
2164 | ; found directory; if we are creating directory, return OK, |
2167 | ; found directory; if we are creating directory, return OK, |
2165 | ; if we are creating file, say "access denied" |
2168 | ; if we are creating file, say "access denied" |
2166 | add esp, 32 |
2169 | add esp, 32 |
2167 | popad |
2170 | popad |
2168 | test al, al |
2171 | test al, al |
2169 | mov eax, ERROR_ACCESS_DENIED |
2172 | mov eax, ERROR_ACCESS_DENIED |
2170 | jz @f |
2173 | jz @f |
2171 | mov al, 0 |
2174 | mov al, 0 |
2172 | @@: |
2175 | @@: |
2173 | xor ebx, ebx |
2176 | xor ebx, ebx |
2174 | ret |
2177 | ret |
2175 | .exists_file: |
2178 | .exists_file: |
2176 | ; found file; if we are creating directory, return "access denied", |
2179 | ; found file; if we are creating directory, return "access denied", |
2177 | ; if we are creating file, delete existing file and continue |
2180 | ; if we are creating file, delete existing file and continue |
2178 | cmp byte [esp+32+28], 0 |
2181 | cmp byte [esp+32+28], 0 |
2179 | jz @f |
2182 | jz @f |
2180 | add esp, 32 |
2183 | add esp, 32 |
2181 | popad |
2184 | popad |
2182 | mov eax, ERROR_ACCESS_DENIED |
2185 | mov eax, ERROR_ACCESS_DENIED |
2183 | xor ebx, ebx |
2186 | xor ebx, ebx |
2184 | ret |
2187 | ret |
2185 | @@: |
2188 | @@: |
2186 | ; delete FAT chain |
2189 | ; delete FAT chain |
2187 | push edi |
2190 | push edi |
2188 | xor eax, eax |
2191 | xor eax, eax |
2189 | mov dword [edi+28], eax ; zero size |
2192 | mov dword [edi+28], eax ; zero size |
2190 | xor ecx, ecx |
2193 | xor ecx, ecx |
2191 | mov eax, [edi+20-2] |
2194 | mov eax, [edi+20-2] |
2192 | mov ax, [edi+26] |
2195 | mov ax, [edi+26] |
2193 | mov word [edi+20], cx |
2196 | mov word [edi+20], cx |
2194 | mov word [edi+26], cx |
2197 | mov word [edi+26], cx |
2195 | test eax, eax |
2198 | test eax, eax |
2196 | jz .done1 |
2199 | jz .done1 |
2197 | @@: |
2200 | @@: |
2198 | cmp eax, [fatRESERVED] |
2201 | cmp eax, [fatRESERVED] |
2199 | jae .done1 |
2202 | jae .done1 |
2200 | push edx |
2203 | push edx |
2201 | xor edx, edx |
2204 | xor edx, edx |
2202 | call set_FAT |
2205 | call set_FAT |
2203 | mov eax, edx |
2206 | mov eax, edx |
2204 | pop edx |
2207 | pop edx |
2205 | inc ecx |
2208 | inc ecx |
2206 | jmp @b |
2209 | jmp @b |
2207 | .done1: |
2210 | .done1: |
2208 | pop edi |
2211 | pop edi |
2209 | call get_time_for_file |
2212 | call get_time_for_file |
2210 | mov [edi+22], ax |
2213 | mov [edi+22], ax |
2211 | call get_date_for_file |
2214 | call get_date_for_file |
2212 | mov [edi+24], ax |
2215 | mov [edi+24], ax |
2213 | mov [edi+18], ax |
2216 | mov [edi+18], ax |
2214 | or byte [edi+11], 20h ; set 'archive' attribute |
2217 | or byte [edi+11], 20h ; set 'archive' attribute |
2215 | jmp .doit |
2218 | jmp .doit |
2216 | .notfound: |
2219 | .notfound: |
2217 | ; file is not found; generate short name |
2220 | ; file is not found; generate short name |
2218 | call fat_name_is_legal |
2221 | call fat_name_is_legal |
2219 | jc @f |
2222 | jc @f |
2220 | add esp, 32 |
2223 | add esp, 32 |
2221 | popad |
2224 | popad |
2222 | mov eax, ERROR_FILE_NOT_FOUND |
2225 | mov eax, ERROR_FILE_NOT_FOUND |
2223 | xor ebx, ebx |
2226 | xor ebx, ebx |
2224 | ret |
2227 | ret |
2225 | @@: |
2228 | @@: |
2226 | sub esp, 12 |
2229 | sub esp, 12 |
2227 | mov edi, esp |
2230 | mov edi, esp |
2228 | call fat_gen_short_name |
2231 | call fat_gen_short_name |
2229 | .test_short_name_loop: |
2232 | .test_short_name_loop: |
2230 | push esi edi ecx |
2233 | push esi edi ecx |
2231 | mov esi, edi |
2234 | mov esi, edi |
2232 | lea eax, [esp+12+12+8] |
2235 | lea eax, [esp+12+12+8] |
2233 | mov [eax], ebp |
2236 | mov [eax], ebp |
2234 | and dword [eax+4], 0 |
2237 | and dword [eax+4], 0 |
2235 | call dword [eax-4] |
2238 | call dword [eax-4] |
2236 | jc .found |
2239 | jc .found |
2237 | .test_short_name_entry: |
2240 | .test_short_name_entry: |
2238 | cmp byte [edi+11], 0xF |
2241 | cmp byte [edi+11], 0xF |
2239 | jz .test_short_name_cont |
2242 | jz .test_short_name_cont |
2240 | mov ecx, 11 |
2243 | mov ecx, 11 |
2241 | push esi edi |
2244 | push esi edi |
2242 | repz cmpsb |
2245 | repz cmpsb |
2243 | pop edi esi |
2246 | pop edi esi |
2244 | jz .short_name_found |
2247 | jz .short_name_found |
2245 | .test_short_name_cont: |
2248 | .test_short_name_cont: |
2246 | lea eax, [esp+12+12+8] |
2249 | lea eax, [esp+12+12+8] |
2247 | call dword [eax-8] |
2250 | call dword [eax-8] |
2248 | jnc .test_short_name_entry |
2251 | jnc .test_short_name_entry |
2249 | jmp .found |
2252 | jmp .found |
2250 | .short_name_found: |
2253 | .short_name_found: |
2251 | pop ecx edi esi |
2254 | pop ecx edi esi |
2252 | call fat_next_short_name |
2255 | call fat_next_short_name |
2253 | jnc .test_short_name_loop |
2256 | jnc .test_short_name_loop |
2254 | .disk_full: |
2257 | .disk_full: |
2255 | add esp, 12+32 |
2258 | add esp, 12+32 |
2256 | popa |
2259 | popa |
2257 | mov eax, ERROR_DISK_FULL |
2260 | mov eax, ERROR_DISK_FULL |
2258 | xor ebx, ebx |
2261 | xor ebx, ebx |
2259 | ret |
2262 | ret |
2260 | .found: |
2263 | .found: |
2261 | pop ecx edi esi |
2264 | pop ecx edi esi |
2262 | ; now find space in directory |
2265 | ; now find space in directory |
2263 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
2266 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
2264 | mov al, '~' |
2267 | mov al, '~' |
2265 | push ecx edi |
2268 | push ecx edi |
2266 | mov ecx, 8 |
2269 | mov ecx, 8 |
2267 | repnz scasb |
2270 | repnz scasb |
2268 | push 1 |
2271 | push 1 |
2269 | pop eax ; 1 entry |
2272 | pop eax ; 1 entry |
2270 | jnz .notilde |
2273 | jnz .notilde |
2271 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
2274 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
2272 | xor eax, eax |
2275 | xor eax, eax |
2273 | @@: |
2276 | @@: |
2274 | cmp byte [esi], 0 |
2277 | cmp byte [esi], 0 |
2275 | jz @f |
2278 | jz @f |
2276 | inc esi |
2279 | inc esi |
2277 | inc eax |
2280 | inc eax |
2278 | jmp @b |
2281 | jmp @b |
2279 | @@: |
2282 | @@: |
2280 | sub esi, eax |
2283 | sub esi, eax |
2281 | add eax, 12+13 |
2284 | add eax, 12+13 |
2282 | mov ecx, 13 |
2285 | mov ecx, 13 |
2283 | push edx |
2286 | push edx |
2284 | cdq |
2287 | cdq |
2285 | div ecx |
2288 | div ecx |
2286 | pop edx |
2289 | pop edx |
2287 | .notilde: |
2290 | .notilde: |
2288 | push -1 |
2291 | push -1 |
2289 | push -1 |
2292 | push -1 |
2290 | push -1 |
2293 | push -1 |
2291 | ; find |
2294 | ; find |
2292 | xor ecx, ecx |
2295 | xor ecx, ecx |
2293 | push eax |
2296 | push eax |
2294 | lea eax, [esp+16+8+12+8] |
2297 | lea eax, [esp+16+8+12+8] |
2295 | mov [eax], ebp |
2298 | mov [eax], ebp |
2296 | and dword [eax+4], 0 |
2299 | and dword [eax+4], 0 |
2297 | call dword [eax-4] |
2300 | call dword [eax-4] |
2298 | pop eax |
2301 | pop eax |
2299 | jnc .scan_dir |
2302 | jnc .scan_dir |
2300 | .fsfrfe3: |
2303 | .fsfrfe3: |
2301 | add esp, 12+8+12+32 |
2304 | add esp, 12+8+12+32 |
2302 | popad |
2305 | popad |
2303 | mov eax, 11 |
2306 | mov eax, 11 |
2304 | xor ebx, ebx |
2307 | xor ebx, ebx |
2305 | ret |
2308 | ret |
2306 | .scan_dir: |
2309 | .scan_dir: |
2307 | cmp byte [edi], 0 |
2310 | cmp byte [edi], 0 |
2308 | jz .free |
2311 | jz .free |
2309 | cmp byte [edi], 0xE5 |
2312 | cmp byte [edi], 0xE5 |
2310 | jz .free |
2313 | jz .free |
2311 | xor ecx, ecx |
2314 | xor ecx, ecx |
2312 | .scan_cont: |
2315 | .scan_cont: |
2313 | push eax |
2316 | push eax |
2314 | lea eax, [esp+16+8+12+8] |
2317 | lea eax, [esp+16+8+12+8] |
2315 | call dword [eax-8] |
2318 | call dword [eax-8] |
2316 | pop eax |
2319 | pop eax |
2317 | jnc .scan_dir |
2320 | jnc .scan_dir |
2318 | cmp [hd_error], 0 |
2321 | cmp [hd_error], 0 |
2319 | jnz .fsfrfe3 |
2322 | jnz .fsfrfe3 |
2320 | push eax |
2323 | push eax |
2321 | lea eax, [esp+16+8+12+8] |
2324 | lea eax, [esp+16+8+12+8] |
2322 | call dword [eax+20] ; extend directory |
2325 | call dword [eax+20] ; extend directory |
2323 | pop eax |
2326 | pop eax |
2324 | jnc .scan_dir |
2327 | jnc .scan_dir |
2325 | add esp, 12+8+12+32 |
2328 | add esp, 12+8+12+32 |
2326 | popad |
2329 | popad |
2327 | mov eax, ERROR_DISK_FULL |
2330 | mov eax, ERROR_DISK_FULL |
2328 | xor ebx, ebx |
2331 | xor ebx, ebx |
2329 | ret |
2332 | ret |
2330 | .free: |
2333 | .free: |
2331 | test ecx, ecx |
2334 | test ecx, ecx |
2332 | jnz @f |
2335 | jnz @f |
2333 | mov [esp], edi |
2336 | mov [esp], edi |
2334 | mov ecx, [esp+12+8+12+8] |
2337 | mov ecx, [esp+12+8+12+8] |
2335 | mov [esp+4], ecx |
2338 | mov [esp+4], ecx |
2336 | mov ecx, [esp+12+8+12+12] |
2339 | mov ecx, [esp+12+8+12+12] |
2337 | mov [esp+8], ecx |
2340 | mov [esp+8], ecx |
2338 | xor ecx, ecx |
2341 | xor ecx, ecx |
2339 | @@: |
2342 | @@: |
2340 | inc ecx |
2343 | inc ecx |
2341 | cmp ecx, eax |
2344 | cmp ecx, eax |
2342 | jb .scan_cont |
2345 | jb .scan_cont |
2343 | ; found! |
2346 | ; found! |
2344 | ; calculate name checksum |
2347 | ; calculate name checksum |
2345 | push esi ecx |
2348 | push esi ecx |
2346 | mov esi, [esp+8+12] |
2349 | mov esi, [esp+8+12] |
2347 | mov ecx, 11 |
2350 | mov ecx, 11 |
2348 | xor eax, eax |
2351 | xor eax, eax |
2349 | @@: |
2352 | @@: |
2350 | ror al, 1 |
2353 | ror al, 1 |
2351 | add al, [esi] |
2354 | add al, [esi] |
2352 | inc esi |
2355 | inc esi |
2353 | loop @b |
2356 | loop @b |
2354 | pop ecx esi |
2357 | pop ecx esi |
2355 | pop edi |
2358 | pop edi |
2356 | pop dword [esp+8+12+12] |
2359 | pop dword [esp+8+12+12] |
2357 | pop dword [esp+8+12+12] |
2360 | pop dword [esp+8+12+12] |
2358 | ; edi points to first entry in free chunk |
2361 | ; edi points to first entry in free chunk |
2359 | dec ecx |
2362 | dec ecx |
2360 | jz .nolfn |
2363 | jz .nolfn |
2361 | push esi |
2364 | push esi |
2362 | push eax |
2365 | push eax |
2363 | lea eax, [esp+8+8+12+8] |
2366 | lea eax, [esp+8+8+12+8] |
2364 | call dword [eax+8] ; begin write |
2367 | call dword [eax+8] ; begin write |
2365 | mov al, 40h |
2368 | mov al, 40h |
2366 | .writelfn: |
2369 | .writelfn: |
2367 | or al, cl |
2370 | or al, cl |
2368 | mov esi, [esp+4] |
2371 | mov esi, [esp+4] |
2369 | push ecx |
2372 | push ecx |
2370 | dec ecx |
2373 | dec ecx |
2371 | imul ecx, 13 |
2374 | imul ecx, 13 |
2372 | add esi, ecx |
2375 | add esi, ecx |
2373 | stosb |
2376 | stosb |
2374 | mov cl, 5 |
2377 | mov cl, 5 |
2375 | call fs_RamdiskRewrite.read_symbols |
2378 | call fs_RamdiskRewrite.read_symbols |
2376 | mov ax, 0xF |
2379 | mov ax, 0xF |
2377 | stosw |
2380 | stosw |
2378 | mov al, [esp+4] |
2381 | mov al, [esp+4] |
2379 | stosb |
2382 | stosb |
2380 | mov cl, 6 |
2383 | mov cl, 6 |
2381 | call fs_RamdiskRewrite.read_symbols |
2384 | call fs_RamdiskRewrite.read_symbols |
2382 | xor eax, eax |
2385 | xor eax, eax |
2383 | stosw |
2386 | stosw |
2384 | mov cl, 2 |
2387 | mov cl, 2 |
2385 | call fs_RamdiskRewrite.read_symbols |
2388 | call fs_RamdiskRewrite.read_symbols |
2386 | pop ecx |
2389 | pop ecx |
2387 | lea eax, [esp+8+8+12+8] |
2390 | lea eax, [esp+8+8+12+8] |
2388 | call dword [eax+12] ; next write |
2391 | call dword [eax+12] ; next write |
2389 | xor eax, eax |
2392 | xor eax, eax |
2390 | loop .writelfn |
2393 | loop .writelfn |
2391 | pop eax |
2394 | pop eax |
2392 | pop esi |
2395 | pop esi |
2393 | ; lea eax, [esp+8+12+8] |
2396 | ; lea eax, [esp+8+12+8] |
2394 | ; call dword [eax+16] ; end write |
2397 | ; call dword [eax+16] ; end write |
2395 | .nolfn: |
2398 | .nolfn: |
2396 | xchg esi, [esp] |
2399 | xchg esi, [esp] |
2397 | mov ecx, 11 |
2400 | mov ecx, 11 |
2398 | rep movsb |
2401 | rep movsb |
2399 | mov word [edi], 20h ; attributes |
2402 | mov word [edi], 20h ; attributes |
2400 | sub edi, 11 |
2403 | sub edi, 11 |
2401 | pop esi ecx |
2404 | pop esi ecx |
2402 | add esp, 12 |
2405 | add esp, 12 |
2403 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
2406 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
2404 | call get_time_for_file |
2407 | call get_time_for_file |
2405 | mov [edi+14], ax ; creation time |
2408 | mov [edi+14], ax ; creation time |
2406 | mov [edi+22], ax ; last write time |
2409 | mov [edi+22], ax ; last write time |
2407 | call get_date_for_file |
2410 | call get_date_for_file |
2408 | mov [edi+16], ax ; creation date |
2411 | mov [edi+16], ax ; creation date |
2409 | mov [edi+24], ax ; last write date |
2412 | mov [edi+24], ax ; last write date |
2410 | mov [edi+18], ax ; last access date |
2413 | mov [edi+18], ax ; last access date |
2411 | xor ecx, ecx |
2414 | xor ecx, ecx |
2412 | mov word [edi+20], cx ; high word of cluster |
2415 | mov word [edi+20], cx ; high word of cluster |
2413 | mov word [edi+26], cx ; low word of cluster - to be filled |
2416 | mov word [edi+26], cx ; low word of cluster - to be filled |
2414 | mov dword [edi+28], ecx ; file size - to be filled |
2417 | mov dword [edi+28], ecx ; file size - to be filled |
2415 | cmp byte [esp+32+28], cl |
2418 | cmp byte [esp+32+28], cl |
2416 | jz .doit |
2419 | jz .doit |
2417 | ; create directory |
2420 | ; create directory |
2418 | mov byte [edi+11], 10h ; attributes: folder |
2421 | mov byte [edi+11], 10h ; attributes: folder |
2419 | mov edx, edi |
2422 | mov edx, edi |
2420 | lea eax, [esp+8] |
2423 | lea eax, [esp+8] |
2421 | call dword [eax+16] ; flush directory |
2424 | call dword [eax+16] ; flush directory |
2422 | push ecx |
2425 | push ecx |
2423 | mov ecx, [SECTORS_PER_CLUSTER] |
2426 | mov ecx, [SECTORS_PER_CLUSTER] |
2424 | shl ecx, 9 |
2427 | shl ecx, 9 |
2425 | jmp .doit2 |
2428 | jmp .doit2 |
2426 | .doit: |
2429 | .doit: |
2427 | lea eax, [esp+8] |
2430 | lea eax, [esp+8] |
2428 | call dword [eax+16] ; flush directory |
2431 | call dword [eax+16] ; flush directory |
2429 | push ecx |
2432 | push ecx |
2430 | mov ecx, [esp+4+32+24] |
2433 | mov ecx, [esp+4+32+24] |
2431 | .doit2: |
2434 | .doit2: |
2432 | push ecx |
2435 | push ecx |
2433 | push edi |
2436 | push edi |
2434 | mov esi, edx |
2437 | mov esi, edx |
2435 | test ecx, ecx |
2438 | test ecx, ecx |
2436 | jz .done |
2439 | jz .done |
2437 | mov eax, 2 |
2440 | mov eax, 2 |
2438 | call get_free_FAT |
2441 | call get_free_FAT |
2439 | jc .diskfull |
2442 | jc .diskfull |
2440 | push eax |
2443 | push eax |
2441 | mov [edi+26], ax |
2444 | mov [edi+26], ax |
2442 | shr eax, 16 |
2445 | shr eax, 16 |
2443 | mov [edi+20], ax |
2446 | mov [edi+20], ax |
2444 | lea eax, [esp+16+8] |
2447 | lea eax, [esp+16+8] |
2445 | call dword [eax+16] ; flush directory |
2448 | call dword [eax+16] ; flush directory |
2446 | pop eax |
2449 | pop eax |
2447 | push edx |
2450 | push edx |
2448 | mov edx, [fatEND] |
2451 | mov edx, [fatEND] |
2449 | call set_FAT |
2452 | call set_FAT |
2450 | pop edx |
2453 | pop edx |
2451 | .write_cluster: |
2454 | .write_cluster: |
2452 | push eax |
2455 | push eax |
2453 | dec eax |
2456 | dec eax |
2454 | dec eax |
2457 | dec eax |
2455 | mov ebp, [SECTORS_PER_CLUSTER] |
2458 | mov ebp, [SECTORS_PER_CLUSTER] |
2456 | imul eax, ebp |
2459 | imul eax, ebp |
2457 | add eax, [DATA_START] |
2460 | add eax, [DATA_START] |
2458 | ; write data |
2461 | ; write data |
2459 | .write_sector: |
2462 | .write_sector: |
2460 | cmp byte [esp+16+32+28], 0 |
2463 | cmp byte [esp+16+32+28], 0 |
2461 | jnz .writedir |
2464 | jnz .writedir |
2462 | mov ecx, 512 |
2465 | mov ecx, 512 |
2463 | cmp dword [esp+8], ecx |
2466 | cmp dword [esp+8], ecx |
2464 | jb .writeshort |
2467 | jb .writeshort |
2465 | ; we can write directly from given buffer |
2468 | ; we can write directly from given buffer |
2466 | mov ebx, esi |
2469 | mov ebx, esi |
2467 | add esi, ecx |
2470 | add esi, ecx |
2468 | jmp .writecommon |
2471 | jmp .writecommon |
2469 | .writeshort: |
2472 | .writeshort: |
2470 | mov ecx, [esp+8] |
2473 | mov ecx, [esp+8] |
2471 | push ecx |
2474 | push ecx |
2472 | mov edi, buffer |
2475 | mov edi, buffer |
2473 | mov ebx, edi |
2476 | mov ebx, edi |
2474 | rep movsb |
2477 | rep movsb |
2475 | .writedircont: |
2478 | .writedircont: |
2476 | mov ecx, buffer+0x200 |
2479 | mov ecx, buffer+0x200 |
2477 | sub ecx, edi |
2480 | sub ecx, edi |
2478 | push eax |
2481 | push eax |
2479 | xor eax, eax |
2482 | xor eax, eax |
2480 | rep stosb |
2483 | rep stosb |
2481 | pop eax |
2484 | pop eax |
2482 | pop ecx |
2485 | pop ecx |
2483 | .writecommon: |
2486 | .writecommon: |
2484 | call hd_write |
2487 | call hd_write |
2485 | cmp [hd_error], 0 |
2488 | cmp [hd_error], 0 |
2486 | jnz .writeerr |
2489 | jnz .writeerr |
2487 | inc eax |
2490 | inc eax |
2488 | sub dword [esp+8], ecx |
2491 | sub dword [esp+8], ecx |
2489 | jz .writedone |
2492 | jz .writedone |
2490 | dec ebp |
2493 | dec ebp |
2491 | jnz .write_sector |
2494 | jnz .write_sector |
2492 | ; allocate new cluster |
2495 | ; allocate new cluster |
2493 | pop eax |
2496 | pop eax |
2494 | mov ecx, eax |
2497 | mov ecx, eax |
2495 | call get_free_FAT |
2498 | call get_free_FAT |
2496 | jc .diskfull |
2499 | jc .diskfull |
2497 | push edx |
2500 | push edx |
2498 | mov edx, [fatEND] |
2501 | mov edx, [fatEND] |
2499 | call set_FAT |
2502 | call set_FAT |
2500 | xchg eax, ecx |
2503 | xchg eax, ecx |
2501 | mov edx, ecx |
2504 | mov edx, ecx |
2502 | call set_FAT |
2505 | call set_FAT |
2503 | pop edx |
2506 | pop edx |
2504 | xchg eax, ecx |
2507 | xchg eax, ecx |
2505 | jmp .write_cluster |
2508 | jmp .write_cluster |
2506 | .diskfull: |
2509 | .diskfull: |
2507 | mov eax, ERROR_DISK_FULL |
2510 | mov eax, ERROR_DISK_FULL |
2508 | jmp .ret |
2511 | jmp .ret |
2509 | .writeerr: |
2512 | .writeerr: |
2510 | pop eax |
2513 | pop eax |
2511 | sub esi, ecx |
2514 | sub esi, ecx |
2512 | mov eax, 11 |
2515 | mov eax, 11 |
2513 | jmp .ret |
2516 | jmp .ret |
2514 | .writedone: |
2517 | .writedone: |
2515 | pop eax |
2518 | pop eax |
2516 | .done: |
2519 | .done: |
2517 | xor eax, eax |
2520 | xor eax, eax |
2518 | .ret: |
2521 | .ret: |
2519 | pop edi ecx |
2522 | pop edi ecx |
2520 | mov ebx, esi |
2523 | mov ebx, esi |
2521 | sub ebx, edx |
2524 | sub ebx, edx |
2522 | pop ebp |
2525 | pop ebp |
2523 | mov [esp+32+28], eax |
2526 | mov [esp+32+28], eax |
2524 | lea eax, [esp+8] |
2527 | lea eax, [esp+8] |
2525 | call dword [eax+8] |
2528 | call dword [eax+8] |
2526 | mov [edi+28], ebx |
2529 | mov [edi+28], ebx |
2527 | call dword [eax+16] |
2530 | call dword [eax+16] |
2528 | mov [esp+32+16], ebx |
2531 | mov [esp+32+16], ebx |
2529 | lea eax, [ebx+511] |
2532 | lea eax, [ebx+511] |
2530 | shr eax, 9 |
2533 | shr eax, 9 |
2531 | mov ecx, [SECTORS_PER_CLUSTER] |
2534 | mov ecx, [SECTORS_PER_CLUSTER] |
2532 | lea eax, [eax+ecx-1] |
2535 | lea eax, [eax+ecx-1] |
2533 | xor edx, edx |
2536 | xor edx, edx |
2534 | div ecx |
2537 | div ecx |
2535 | mov ecx, ebp |
2538 | mov ecx, ebp |
2536 | sub ecx, eax |
2539 | sub ecx, eax |
2537 | call add_disk_free_space |
2540 | call add_disk_free_space |
2538 | add esp, 32 |
2541 | add esp, 32 |
2539 | call update_disk |
2542 | call update_disk |
2540 | popad |
2543 | popad |
2541 | ret |
2544 | ret |
2542 | .writedir: |
2545 | .writedir: |
2543 | push 512 |
2546 | push 512 |
2544 | mov edi, buffer |
2547 | mov edi, buffer |
2545 | mov ebx, edi |
2548 | mov ebx, edi |
2546 | mov ecx, [SECTORS_PER_CLUSTER] |
2549 | mov ecx, [SECTORS_PER_CLUSTER] |
2547 | shl ecx, 9 |
2550 | shl ecx, 9 |
2548 | cmp ecx, [esp+12] |
2551 | cmp ecx, [esp+12] |
2549 | jnz .writedircont |
2552 | jnz .writedircont |
2550 | dec dword [esp+16] |
2553 | dec dword [esp+16] |
2551 | push esi |
2554 | push esi |
2552 | mov ecx, 32/4 |
2555 | mov ecx, 32/4 |
2553 | rep movsd |
2556 | rep movsd |
2554 | pop esi |
2557 | pop esi |
2555 | mov dword [edi-32], '. ' |
2558 | mov dword [edi-32], '. ' |
2556 | mov dword [edi-32+4], ' ' |
2559 | mov dword [edi-32+4], ' ' |
2557 | mov dword [edi-32+8], ' ' |
2560 | mov dword [edi-32+8], ' ' |
2558 | mov byte [edi-32+11], 10h |
2561 | mov byte [edi-32+11], 10h |
2559 | push esi |
2562 | push esi |
2560 | mov ecx, 32/4 |
2563 | mov ecx, 32/4 |
2561 | rep movsd |
2564 | rep movsd |
2562 | pop esi |
2565 | pop esi |
2563 | mov dword [edi-32], '.. ' |
2566 | mov dword [edi-32], '.. ' |
2564 | mov dword [edi-32+4], ' ' |
2567 | mov dword [edi-32+4], ' ' |
2565 | mov dword [edi-32+8], ' ' |
2568 | mov dword [edi-32+8], ' ' |
2566 | mov byte [edi-32+11], 10h |
2569 | mov byte [edi-32+11], 10h |
2567 | mov ecx, [esp+20+8] |
2570 | mov ecx, [esp+20+8] |
2568 | cmp ecx, [ROOT_CLUSTER] |
2571 | cmp ecx, [ROOT_CLUSTER] |
2569 | jnz @f |
2572 | jnz @f |
2570 | xor ecx, ecx |
2573 | xor ecx, ecx |
2571 | @@: |
2574 | @@: |
2572 | mov word [edi-32+26], cx |
2575 | mov word [edi-32+26], cx |
2573 | shr ecx, 16 |
2576 | shr ecx, 16 |
2574 | mov [edi-32+20], cx |
2577 | mov [edi-32+20], cx |
2575 | jmp .writedircont |
2578 | jmp .writedircont |
2576 | 2579 | ||
2577 | ;---------------------------------------------------------------- |
2580 | ;---------------------------------------------------------------- |
2578 | ; |
2581 | ; |
2579 | ; fs_HdWrite - LFN variant for writing to hard disk |
2582 | ; fs_HdWrite - LFN variant for writing to hard disk |
2580 | ; |
2583 | ; |
2581 | ; esi points to filename |
2584 | ; esi points to filename |
2582 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
2585 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
2583 | ; may be ebx=0 - start from first byte |
2586 | ; may be ebx=0 - start from first byte |
2584 | ; ecx number of bytes to write, 0+ |
2587 | ; ecx number of bytes to write, 0+ |
2585 | ; edx mem location to data |
2588 | ; edx mem location to data |
2586 | ; |
2589 | ; |
2587 | ; ret ebx = bytes written (maybe 0) |
2590 | ; ret ebx = bytes written (maybe 0) |
2588 | ; eax = 0 ok write or other = errormsg |
2591 | ; eax = 0 ok write or other = errormsg |
2589 | ; |
2592 | ; |
2590 | ;-------------------------------------------------------------- |
2593 | ;-------------------------------------------------------------- |
2591 | fs_HdWrite.access_denied: |
2594 | fs_HdWrite.access_denied: |
2592 | push ERROR_ACCESS_DENIED |
2595 | push ERROR_ACCESS_DENIED |
2593 | fs_HdWrite.ret0: |
2596 | fs_HdWrite.ret0: |
2594 | pop eax |
2597 | pop eax |
2595 | xor ebx, ebx |
2598 | xor ebx, ebx |
2596 | ret |
2599 | ret |
2597 | 2600 | ||
2598 | fs_HdWrite.ret11: |
2601 | fs_HdWrite.ret11: |
2599 | push 11 |
2602 | push 11 |
2600 | jmp fs_HdWrite.ret0 |
2603 | jmp fs_HdWrite.ret0 |
2601 | 2604 | ||
2602 | fs_HdWrite: |
2605 | fs_HdWrite: |
2603 | cmp [fs_type], 1 |
2606 | cmp [fs_type], 1 |
2604 | jz ntfs_HdWrite |
2607 | jz ntfs_HdWrite |
2605 | cmp [fs_type], 16 |
2608 | cmp [fs_type], 16 |
2606 | jz @f |
2609 | jz @f |
2607 | cmp [fs_type], 32 |
2610 | cmp [fs_type], 32 |
2608 | jz @f |
2611 | jz @f |
2609 | push ERROR_UNKNOWN_FS |
2612 | push ERROR_UNKNOWN_FS |
2610 | jmp .ret0 |
2613 | jmp .ret0 |
2611 | @@: |
2614 | @@: |
2612 | cmp byte [esi], 0 |
2615 | cmp byte [esi], 0 |
2613 | jz .access_denied |
2616 | jz .access_denied |
2614 | pushad |
2617 | pushad |
2615 | call hd_find_lfn |
2618 | call hd_find_lfn |
2616 | pushfd |
2619 | pushfd |
2617 | cmp [hd_error], 0 |
2620 | cmp [hd_error], 0 |
2618 | jz @f |
2621 | jz @f |
2619 | popfd |
2622 | popfd |
2620 | popad |
2623 | popad |
2621 | push 11 |
2624 | push 11 |
2622 | jmp .ret0 |
2625 | jmp .ret0 |
2623 | @@: |
2626 | @@: |
2624 | popfd |
2627 | popfd |
2625 | jnc .found |
2628 | jnc .found |
2626 | popad |
2629 | popad |
2627 | push ERROR_FILE_NOT_FOUND |
2630 | push ERROR_FILE_NOT_FOUND |
2628 | jmp .ret0 |
2631 | jmp .ret0 |
2629 | .found: |
2632 | .found: |
2630 | ; FAT does not support files larger than 4GB |
2633 | ; FAT does not support files larger than 4GB |
2631 | test ebx, ebx |
2634 | test ebx, ebx |
2632 | jz .l1 |
2635 | jz .l1 |
2633 | cmp dword [ebx+4], 0 |
2636 | cmp dword [ebx+4], 0 |
2634 | jz @f |
2637 | jz @f |
2635 | .eof: |
2638 | .eof: |
2636 | popad |
2639 | popad |
2637 | push ERROR_END_OF_FILE |
2640 | push ERROR_END_OF_FILE |
2638 | jmp .ret0 |
2641 | jmp .ret0 |
2639 | @@: |
2642 | @@: |
2640 | mov ebx, [ebx] |
2643 | mov ebx, [ebx] |
2641 | .l1: |
2644 | .l1: |
2642 | ; now edi points to direntry, ebx=start byte to write, |
2645 | ; now edi points to direntry, ebx=start byte to write, |
2643 | ; ecx=number of bytes to write, edx=data pointer |
2646 | ; ecx=number of bytes to write, edx=data pointer |
2644 | 2647 | ||
2645 | ; extend file if needed |
2648 | ; extend file if needed |
2646 | add ecx, ebx |
2649 | add ecx, ebx |
2647 | jc .eof ; FAT does not support files larger than 4GB |
2650 | jc .eof ; FAT does not support files larger than 4GB |
2648 | push eax ; save directory sector |
2651 | push eax ; save directory sector |
2649 | push 0 ; return value=0 |
2652 | push 0 ; return value=0 |
2650 | 2653 | ||
2651 | call get_time_for_file |
2654 | call get_time_for_file |
2652 | mov [edi+22], ax ; last write time |
2655 | mov [edi+22], ax ; last write time |
2653 | call get_date_for_file |
2656 | call get_date_for_file |
2654 | mov [edi+24], ax ; last write date |
2657 | mov [edi+24], ax ; last write date |
2655 | mov [edi+18], ax ; last access date |
2658 | mov [edi+18], ax ; last access date |
2656 | 2659 | ||
2657 | push dword [edi+28] ; save current file size |
2660 | push dword [edi+28] ; save current file size |
2658 | cmp ecx, [edi+28] |
2661 | cmp ecx, [edi+28] |
2659 | jbe .length_ok |
2662 | jbe .length_ok |
2660 | cmp ecx, ebx |
2663 | cmp ecx, ebx |
2661 | jz .length_ok |
2664 | jz .length_ok |
2662 | call hd_extend_file |
2665 | call hd_extend_file |
2663 | jnc .length_ok |
2666 | jnc .length_ok |
2664 | mov [esp+4], eax |
2667 | mov [esp+4], eax |
2665 | ; hd_extend_file can return three error codes: FAT table error, device error or disk full. |
2668 | ; hd_extend_file can return three error codes: FAT table error, device error or disk full. |
2666 | ; First two cases are fatal errors, in third case we may write some data |
2669 | ; First two cases are fatal errors, in third case we may write some data |
2667 | cmp al, ERROR_DISK_FULL |
2670 | cmp al, ERROR_DISK_FULL |
2668 | jz .disk_full |
2671 | jz .disk_full |
2669 | pop eax |
2672 | pop eax |
2670 | pop eax |
2673 | pop eax |
2671 | mov [esp+4+28], eax |
2674 | mov [esp+4+28], eax |
2672 | pop eax |
2675 | pop eax |
2673 | popad |
2676 | popad |
2674 | xor ebx, ebx |
2677 | xor ebx, ebx |
2675 | ret |
2678 | ret |
2676 | .disk_full: |
2679 | .disk_full: |
2677 | ; correct number of bytes to write |
2680 | ; correct number of bytes to write |
2678 | mov ecx, [edi+28] |
2681 | mov ecx, [edi+28] |
2679 | cmp ecx, ebx |
2682 | cmp ecx, ebx |
2680 | ja .length_ok |
2683 | ja .length_ok |
2681 | .ret: |
2684 | .ret: |
2682 | call update_disk |
2685 | call update_disk |
2683 | cmp [hd_error], 0 |
2686 | cmp [hd_error], 0 |
2684 | jz @f |
2687 | jz @f |
2685 | mov byte [esp+4], 11 |
2688 | mov byte [esp+4], 11 |
2686 | @@: |
2689 | @@: |
2687 | pop eax |
2690 | pop eax |
2688 | pop eax |
2691 | pop eax |
2689 | mov [esp+4+28], eax ; eax=return value |
2692 | mov [esp+4+28], eax ; eax=return value |
2690 | pop eax |
2693 | pop eax |
2691 | sub edx, [esp+20] |
2694 | sub edx, [esp+20] |
2692 | mov [esp+16], edx ; ebx=number of written bytes |
2695 | mov [esp+16], edx ; ebx=number of written bytes |
2693 | popad |
2696 | popad |
2694 | ret |
2697 | ret |
2695 | .length_ok: |
2698 | .length_ok: |
2696 | mov esi, [edi+28] |
2699 | mov esi, [edi+28] |
2697 | mov eax, [edi+20-2] |
2700 | mov eax, [edi+20-2] |
2698 | mov ax, [edi+26] |
2701 | mov ax, [edi+26] |
2699 | mov edi, eax ; edi=current cluster |
2702 | mov edi, eax ; edi=current cluster |
2700 | xor ebp, ebp ; ebp=current sector in cluster |
2703 | xor ebp, ebp ; ebp=current sector in cluster |
2701 | ; save directory |
2704 | ; save directory |
2702 | mov eax, [esp+8] |
2705 | mov eax, [esp+8] |
2703 | push ebx |
2706 | push ebx |
2704 | mov ebx, buffer |
2707 | mov ebx, buffer |
2705 | call hd_write |
2708 | call hd_write |
2706 | pop ebx |
2709 | pop ebx |
2707 | cmp [hd_error], 0 |
2710 | cmp [hd_error], 0 |
2708 | jz @f |
2711 | jz @f |
2709 | .device_err: |
2712 | .device_err: |
2710 | mov byte [esp+4], 11 |
2713 | mov byte [esp+4], 11 |
2711 | jmp .ret |
2714 | jmp .ret |
2712 | @@: |
2715 | @@: |
2713 | 2716 | ||
2714 | ; now ebx=start pos, ecx=end pos, both lie inside file |
2717 | ; now ebx=start pos, ecx=end pos, both lie inside file |
2715 | sub ecx, ebx |
2718 | sub ecx, ebx |
2716 | jz .ret |
2719 | jz .ret |
2717 | .write_loop: |
2720 | .write_loop: |
2718 | ; skip unmodified sectors |
2721 | ; skip unmodified sectors |
2719 | cmp dword [esp], 0x200 |
2722 | cmp dword [esp], 0x200 |
2720 | jb .modify |
2723 | jb .modify |
2721 | sub ebx, 0x200 |
2724 | sub ebx, 0x200 |
2722 | jae .skip |
2725 | jae .skip |
2723 | add ebx, 0x200 |
2726 | add ebx, 0x200 |
2724 | .modify: |
2727 | .modify: |
2725 | ; get length of data in current sector |
2728 | ; get length of data in current sector |
2726 | push ecx |
2729 | push ecx |
2727 | sub ebx, 0x200 |
2730 | sub ebx, 0x200 |
2728 | jb .hasdata |
2731 | jb .hasdata |
2729 | neg ebx |
2732 | neg ebx |
2730 | xor ecx, ecx |
2733 | xor ecx, ecx |
2731 | jmp @f |
2734 | jmp @f |
2732 | .hasdata: |
2735 | .hasdata: |
2733 | neg ebx |
2736 | neg ebx |
2734 | cmp ecx, ebx |
2737 | cmp ecx, ebx |
2735 | jbe @f |
2738 | jbe @f |
2736 | mov ecx, ebx |
2739 | mov ecx, ebx |
2737 | @@: |
2740 | @@: |
2738 | ; get current sector number |
2741 | ; get current sector number |
2739 | mov eax, edi |
2742 | mov eax, edi |
2740 | dec eax |
2743 | dec eax |
2741 | dec eax |
2744 | dec eax |
2742 | imul eax, [SECTORS_PER_CLUSTER] |
2745 | imul eax, [SECTORS_PER_CLUSTER] |
2743 | add eax, [DATA_START] |
2746 | add eax, [DATA_START] |
2744 | add eax, ebp |
2747 | add eax, ebp |
2745 | ; load sector if needed |
2748 | ; load sector if needed |
2746 | cmp dword [esp+4], 0 ; we don't need to read uninitialized data |
2749 | cmp dword [esp+4], 0 ; we don't need to read uninitialized data |
2747 | jz .noread |
2750 | jz .noread |
2748 | cmp ecx, 0x200 ; we don't need to read sector if it is fully rewritten |
2751 | cmp ecx, 0x200 ; we don't need to read sector if it is fully rewritten |
2749 | jz .noread |
2752 | jz .noread |
2750 | cmp ecx, esi ; (same for the last sector) |
2753 | cmp ecx, esi ; (same for the last sector) |
2751 | jz .noread |
2754 | jz .noread |
2752 | push ebx |
2755 | push ebx |
2753 | mov ebx, buffer |
2756 | mov ebx, buffer |
2754 | call hd_read |
2757 | call hd_read |
2755 | pop ebx |
2758 | pop ebx |
2756 | cmp [hd_error], 0 |
2759 | cmp [hd_error], 0 |
2757 | jz @f |
2760 | jz @f |
2758 | .device_err2: |
2761 | .device_err2: |
2759 | pop ecx |
2762 | pop ecx |
2760 | jmp .device_err |
2763 | jmp .device_err |
2761 | @@: |
2764 | @@: |
2762 | .noread: |
2765 | .noread: |
2763 | ; zero uninitialized data if file was extended (because hd_extend_file does not this) |
2766 | ; zero uninitialized data if file was extended (because hd_extend_file does not this) |
2764 | push eax ecx edi |
2767 | push eax ecx edi |
2765 | xor eax, eax |
2768 | xor eax, eax |
2766 | mov ecx, 0x200 |
2769 | mov ecx, 0x200 |
2767 | sub ecx, [esp+4+12] |
2770 | sub ecx, [esp+4+12] |
2768 | jbe @f |
2771 | jbe @f |
2769 | mov edi, buffer |
2772 | mov edi, buffer |
2770 | add edi, [esp+4+12] |
2773 | add edi, [esp+4+12] |
2771 | rep stosb |
2774 | rep stosb |
2772 | @@: |
2775 | @@: |
2773 | ; zero uninitialized data in the last sector |
2776 | ; zero uninitialized data in the last sector |
2774 | mov ecx, 0x200 |
2777 | mov ecx, 0x200 |
2775 | sub ecx, esi |
2778 | sub ecx, esi |
2776 | jbe @f |
2779 | jbe @f |
2777 | mov edi, buffer |
2780 | mov edi, buffer |
2778 | add edi, esi |
2781 | add edi, esi |
2779 | rep stosb |
2782 | rep stosb |
2780 | @@: |
2783 | @@: |
2781 | pop edi ecx |
2784 | pop edi ecx |
2782 | ; copy new data |
2785 | ; copy new data |
2783 | mov eax, edx |
2786 | mov eax, edx |
2784 | neg ebx |
2787 | neg ebx |
2785 | jecxz @f |
2788 | jecxz @f |
2786 | add ebx, buffer+0x200 |
2789 | add ebx, buffer+0x200 |
2787 | call memmove |
2790 | call memmove |
2788 | xor ebx, ebx |
2791 | xor ebx, ebx |
2789 | @@: |
2792 | @@: |
2790 | pop eax |
2793 | pop eax |
2791 | ; save sector |
2794 | ; save sector |
2792 | push ebx |
2795 | push ebx |
2793 | mov ebx, buffer |
2796 | mov ebx, buffer |
2794 | call hd_write |
2797 | call hd_write |
2795 | pop ebx |
2798 | pop ebx |
2796 | cmp [hd_error], 0 |
2799 | cmp [hd_error], 0 |
2797 | jnz .device_err2 |
2800 | jnz .device_err2 |
2798 | add edx, ecx |
2801 | add edx, ecx |
2799 | sub [esp], ecx |
2802 | sub [esp], ecx |
2800 | pop ecx |
2803 | pop ecx |
2801 | jz .ret |
2804 | jz .ret |
2802 | .skip: |
2805 | .skip: |
2803 | ; next sector |
2806 | ; next sector |
2804 | inc ebp |
2807 | inc ebp |
2805 | cmp ebp, [SECTORS_PER_CLUSTER] |
2808 | cmp ebp, [SECTORS_PER_CLUSTER] |
2806 | jb @f |
2809 | jb @f |
2807 | xor ebp, ebp |
2810 | xor ebp, ebp |
2808 | mov eax, edi |
2811 | mov eax, edi |
2809 | call get_FAT |
2812 | call get_FAT |
2810 | mov edi, eax |
2813 | mov edi, eax |
2811 | cmp [hd_error], 0 |
2814 | cmp [hd_error], 0 |
2812 | jnz .device_err |
2815 | jnz .device_err |
2813 | @@: |
2816 | @@: |
2814 | sub esi, 0x200 |
2817 | sub esi, 0x200 |
2815 | jae @f |
2818 | jae @f |
2816 | xor esi, esi |
2819 | xor esi, esi |
2817 | @@: |
2820 | @@: |
2818 | sub dword [esp], 0x200 |
2821 | sub dword [esp], 0x200 |
2819 | jae @f |
2822 | jae @f |
2820 | and dword [esp], 0 |
2823 | and dword [esp], 0 |
2821 | @@: jmp .write_loop |
2824 | @@: jmp .write_loop |
2822 | 2825 | ||
2823 | hd_extend_file.zero_size: |
2826 | hd_extend_file.zero_size: |
2824 | xor eax, eax |
2827 | xor eax, eax |
2825 | jmp hd_extend_file.start_extend |
2828 | jmp hd_extend_file.start_extend |
2826 | 2829 | ||
2827 | ; extends file on hd to given size (new data area is undefined) |
2830 | ; extends file on hd to given size (new data area is undefined) |
2828 | ; in: edi->direntry, ecx=new size |
2831 | ; in: edi->direntry, ecx=new size |
2829 | ; out: CF=0 => OK, eax=0 |
2832 | ; out: CF=0 => OK, eax=0 |
2830 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL or 11) |
2833 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL or 11) |
2831 | hd_extend_file: |
2834 | hd_extend_file: |
2832 | push ebp |
2835 | push ebp |
2833 | mov ebp, [SECTORS_PER_CLUSTER] |
2836 | mov ebp, [SECTORS_PER_CLUSTER] |
2834 | imul ebp, [BYTES_PER_SECTOR] |
2837 | imul ebp, [BYTES_PER_SECTOR] |
2835 | push ecx |
2838 | push ecx |
2836 | ; find the last cluster of file |
2839 | ; find the last cluster of file |
2837 | mov eax, [edi+20-2] |
2840 | mov eax, [edi+20-2] |
2838 | mov ax, [edi+26] |
2841 | mov ax, [edi+26] |
2839 | mov ecx, [edi+28] |
2842 | mov ecx, [edi+28] |
2840 | jecxz .zero_size |
2843 | jecxz .zero_size |
2841 | .last_loop: |
2844 | .last_loop: |
2842 | sub ecx, ebp |
2845 | sub ecx, ebp |
2843 | jbe .last_found |
2846 | jbe .last_found |
2844 | call get_FAT |
2847 | call get_FAT |
2845 | cmp [hd_error], 0 |
2848 | cmp [hd_error], 0 |
2846 | jz @f |
2849 | jz @f |
2847 | .device_err: |
2850 | .device_err: |
2848 | pop ecx |
2851 | pop ecx |
2849 | .device_err2: |
2852 | .device_err2: |
2850 | pop ebp |
2853 | pop ebp |
2851 | push 11 |
2854 | push 11 |
2852 | .ret_err: |
2855 | .ret_err: |
2853 | pop eax |
2856 | pop eax |
2854 | stc |
2857 | stc |
2855 | ret |
2858 | ret |
2856 | @@: |
2859 | @@: |
2857 | cmp eax, 2 |
2860 | cmp eax, 2 |
2858 | jb .fat_err |
2861 | jb .fat_err |
2859 | cmp eax, [fatRESERVED] |
2862 | cmp eax, [fatRESERVED] |
2860 | jb .last_loop |
2863 | jb .last_loop |
2861 | .fat_err: |
2864 | .fat_err: |
2862 | pop ecx ebp |
2865 | pop ecx ebp |
2863 | push ERROR_FAT_TABLE |
2866 | push ERROR_FAT_TABLE |
2864 | jmp .ret_err |
2867 | jmp .ret_err |
2865 | .last_found: |
2868 | .last_found: |
2866 | push eax |
2869 | push eax |
2867 | call get_FAT |
2870 | call get_FAT |
2868 | cmp [hd_error], 0 |
2871 | cmp [hd_error], 0 |
2869 | jz @f |
2872 | jz @f |
2870 | pop eax |
2873 | pop eax |
2871 | jmp .device_err |
2874 | jmp .device_err |
2872 | @@: |
2875 | @@: |
2873 | cmp eax, [fatRESERVED] |
2876 | cmp eax, [fatRESERVED] |
2874 | pop eax |
2877 | pop eax |
2875 | jb .fat_err |
2878 | jb .fat_err |
2876 | ; set length to full number of clusters |
2879 | ; set length to full number of clusters |
2877 | sub [edi+28], ecx |
2880 | sub [edi+28], ecx |
2878 | .start_extend: |
2881 | .start_extend: |
2879 | pop ecx |
2882 | pop ecx |
2880 | ; now do extend |
2883 | ; now do extend |
2881 | push edx |
2884 | push edx |
2882 | mov edx, 2 ; start scan from cluster 2 |
2885 | mov edx, 2 ; start scan from cluster 2 |
2883 | .extend_loop: |
2886 | .extend_loop: |
2884 | cmp [edi+28], ecx |
2887 | cmp [edi+28], ecx |
2885 | jae .extend_done |
2888 | jae .extend_done |
2886 | ; add new cluster |
2889 | ; add new cluster |
2887 | push eax |
2890 | push eax |
2888 | mov eax, edx |
2891 | mov eax, edx |
2889 | call get_free_FAT |
2892 | call get_free_FAT |
2890 | jc .disk_full |
2893 | jc .disk_full |
2891 | mov edx, [fatEND] |
2894 | mov edx, [fatEND] |
2892 | call set_FAT |
2895 | call set_FAT |
2893 | mov edx, eax |
2896 | mov edx, eax |
2894 | pop eax |
2897 | pop eax |
2895 | test eax, eax |
2898 | test eax, eax |
2896 | jz .first_cluster |
2899 | jz .first_cluster |
2897 | push edx |
2900 | push edx |
2898 | call set_FAT |
2901 | call set_FAT |
2899 | pop edx |
2902 | pop edx |
2900 | jmp @f |
2903 | jmp @f |
2901 | .first_cluster: |
2904 | .first_cluster: |
2902 | ror edx, 16 |
2905 | ror edx, 16 |
2903 | mov [edi+20], dx |
2906 | mov [edi+20], dx |
2904 | ror edx, 16 |
2907 | ror edx, 16 |
2905 | mov [edi+26], dx |
2908 | mov [edi+26], dx |
2906 | @@: |
2909 | @@: |
2907 | push ecx |
2910 | push ecx |
2908 | mov ecx, -1 |
2911 | mov ecx, -1 |
2909 | call add_disk_free_space |
2912 | call add_disk_free_space |
2910 | pop ecx |
2913 | pop ecx |
2911 | mov eax, edx |
2914 | mov eax, edx |
2912 | cmp [hd_error], 0 |
2915 | cmp [hd_error], 0 |
2913 | jnz .device_err3 |
2916 | jnz .device_err3 |
2914 | add [edi+28], ebp |
2917 | add [edi+28], ebp |
2915 | jmp .extend_loop |
2918 | jmp .extend_loop |
2916 | .extend_done: |
2919 | .extend_done: |
2917 | mov [edi+28], ecx |
2920 | mov [edi+28], ecx |
2918 | pop edx ebp |
2921 | pop edx ebp |
2919 | xor eax, eax ; CF=0 |
2922 | xor eax, eax ; CF=0 |
2920 | ret |
2923 | ret |
2921 | .device_err3: |
2924 | .device_err3: |
2922 | pop edx |
2925 | pop edx |
2923 | jmp .device_err2 |
2926 | jmp .device_err2 |
2924 | .disk_full: |
2927 | .disk_full: |
2925 | pop eax edx ebp |
2928 | pop eax edx ebp |
2926 | push ERROR_DISK_FULL |
2929 | push ERROR_DISK_FULL |
2927 | pop eax |
2930 | pop eax |
2928 | cmp [hd_error], 0 |
2931 | cmp [hd_error], 0 |
2929 | jz @f |
2932 | jz @f |
2930 | mov al, 11 |
2933 | mov al, 11 |
2931 | @@: stc |
2934 | @@: stc |
2932 | ret |
2935 | ret |
2933 | 2936 | ||
2934 | ;---------------------------------------------------------------- |
2937 | ;---------------------------------------------------------------- |
2935 | ; |
2938 | ; |
2936 | ; fs_HdSetFileEnd - set end of file on hard disk |
2939 | ; fs_HdSetFileEnd - set end of file on hard disk |
2937 | ; |
2940 | ; |
2938 | ; esi points to filename |
2941 | ; esi points to filename |
2939 | ; ebx points to 64-bit number = new file size |
2942 | ; ebx points to 64-bit number = new file size |
2940 | ; ecx ignored (reserved) |
2943 | ; ecx ignored (reserved) |
2941 | ; edx ignored (reserved) |
2944 | ; edx ignored (reserved) |
2942 | ; |
2945 | ; |
2943 | ; ret eax = 0 ok or other = errormsg |
2946 | ; ret eax = 0 ok or other = errormsg |
2944 | ; |
2947 | ; |
2945 | ;-------------------------------------------------------------- |
2948 | ;-------------------------------------------------------------- |
2946 | fs_HdSetFileEnd: |
2949 | fs_HdSetFileEnd: |
2947 | cmp [fs_type], 1 |
2950 | cmp [fs_type], 1 |
2948 | jz ntfs_HdSetFileEnd |
2951 | jz ntfs_HdSetFileEnd |
2949 | cmp [fs_type], 16 |
2952 | cmp [fs_type], 16 |
2950 | jz @f |
2953 | jz @f |
2951 | cmp [fs_type], 32 |
2954 | cmp [fs_type], 32 |
2952 | jz @f |
2955 | jz @f |
2953 | push ERROR_UNKNOWN_FS |
2956 | push ERROR_UNKNOWN_FS |
2954 | .ret: |
2957 | .ret: |
2955 | pop eax |
2958 | pop eax |
2956 | ret |
2959 | ret |
2957 | @@: |
2960 | @@: |
2958 | cmp byte [esi], 0 |
2961 | cmp byte [esi], 0 |
2959 | jnz @f |
2962 | jnz @f |
2960 | .access_denied: |
2963 | .access_denied: |
2961 | push ERROR_ACCESS_DENIED |
2964 | push ERROR_ACCESS_DENIED |
2962 | jmp .ret |
2965 | jmp .ret |
2963 | @@: |
2966 | @@: |
2964 | push edi |
2967 | push edi |
2965 | call hd_find_lfn |
2968 | call hd_find_lfn |
2966 | pushfd |
2969 | pushfd |
2967 | cmp [hd_error], 0 |
2970 | cmp [hd_error], 0 |
2968 | jz @f |
2971 | jz @f |
2969 | popfd |
2972 | popfd |
2970 | push 11 |
2973 | push 11 |
2971 | jmp .ret |
2974 | jmp .ret |
2972 | @@: |
2975 | @@: |
2973 | popfd |
2976 | popfd |
2974 | jnc @f |
2977 | jnc @f |
2975 | pop edi |
2978 | pop edi |
2976 | push ERROR_FILE_NOT_FOUND |
2979 | push ERROR_FILE_NOT_FOUND |
2977 | jmp .ret |
2980 | jmp .ret |
2978 | @@: |
2981 | @@: |
2979 | ; must not be directory |
2982 | ; must not be directory |
2980 | test byte [edi+11], 10h |
2983 | test byte [edi+11], 10h |
2981 | jz @f |
2984 | jz @f |
2982 | pop edi |
2985 | pop edi |
2983 | jmp .access_denied |
2986 | jmp .access_denied |
2984 | @@: |
2987 | @@: |
2985 | ; file size must not exceed 4 Gb |
2988 | ; file size must not exceed 4 Gb |
2986 | cmp dword [ebx+4], 0 |
2989 | cmp dword [ebx+4], 0 |
2987 | jz @f |
2990 | jz @f |
2988 | pop edi |
2991 | pop edi |
2989 | push ERROR_END_OF_FILE |
2992 | push ERROR_END_OF_FILE |
2990 | jmp .ret |
2993 | jmp .ret |
2991 | @@: |
2994 | @@: |
2992 | push eax ; save directory sector |
2995 | push eax ; save directory sector |
2993 | ; set file modification date/time to current |
2996 | ; set file modification date/time to current |
2994 | call fat_update_datetime |
2997 | call fat_update_datetime |
2995 | mov eax, [ebx] |
2998 | mov eax, [ebx] |
2996 | cmp eax, [edi+28] |
2999 | cmp eax, [edi+28] |
2997 | jb .truncate |
3000 | jb .truncate |
2998 | ja .expand |
3001 | ja .expand |
2999 | pop eax |
3002 | pop eax |
3000 | mov ebx, buffer |
3003 | mov ebx, buffer |
3001 | call hd_write |
3004 | call hd_write |
3002 | pop edi |
3005 | pop edi |
3003 | xor eax, eax |
3006 | xor eax, eax |
3004 | cmp [hd_error], 0 |
3007 | cmp [hd_error], 0 |
3005 | jz @f |
3008 | jz @f |
3006 | mov al, 11 |
3009 | mov al, 11 |
3007 | @@: |
3010 | @@: |
3008 | ret |
3011 | ret |
3009 | .expand: |
3012 | .expand: |
3010 | push ebx ebp ecx |
3013 | push ebx ebp ecx |
3011 | push dword [edi+28] ; save old size |
3014 | push dword [edi+28] ; save old size |
3012 | mov ecx, eax |
3015 | mov ecx, eax |
3013 | call hd_extend_file |
3016 | call hd_extend_file |
3014 | push eax ; return code |
3017 | push eax ; return code |
3015 | jnc .expand_ok |
3018 | jnc .expand_ok |
3016 | cmp al, ERROR_DISK_FULL |
3019 | cmp al, ERROR_DISK_FULL |
3017 | jz .disk_full |
3020 | jz .disk_full |
3018 | .pop_ret: |
3021 | .pop_ret: |
3019 | call update_disk |
3022 | call update_disk |
3020 | pop eax ecx ebp ebx ecx edi edi |
3023 | pop eax ecx ebp ebx ecx edi edi |
3021 | ret |
3024 | ret |
3022 | .expand_ok: |
3025 | .expand_ok: |
3023 | .disk_full: |
3026 | .disk_full: |
3024 | ; save directory |
3027 | ; save directory |
3025 | mov eax, [edi+28] |
3028 | mov eax, [edi+28] |
3026 | xchg eax, [esp+20] |
3029 | xchg eax, [esp+20] |
3027 | mov ebx, buffer |
3030 | mov ebx, buffer |
3028 | call hd_write |
3031 | call hd_write |
3029 | mov eax, [edi+20-2] |
3032 | mov eax, [edi+20-2] |
3030 | mov ax, [edi+26] |
3033 | mov ax, [edi+26] |
3031 | mov edi, eax |
3034 | mov edi, eax |
3032 | cmp [hd_error], 0 |
3035 | cmp [hd_error], 0 |
3033 | jz @f |
3036 | jz @f |
3034 | .pop_ret11: |
3037 | .pop_ret11: |
3035 | mov byte [esp], 11 |
3038 | mov byte [esp], 11 |
3036 | jmp .pop_ret |
3039 | jmp .pop_ret |
3037 | @@: |
3040 | @@: |
3038 | ; now zero new data |
3041 | ; now zero new data |
3039 | xor ebp, ebp |
3042 | xor ebp, ebp |
3040 | ; edi=current cluster, ebp=sector in cluster |
3043 | ; edi=current cluster, ebp=sector in cluster |
3041 | ; [esp+20]=new size, [esp+4]=old size, [esp]=return code |
3044 | ; [esp+20]=new size, [esp+4]=old size, [esp]=return code |
3042 | .zero_loop: |
3045 | .zero_loop: |
3043 | sub dword [esp+4], 0x200 |
3046 | sub dword [esp+4], 0x200 |
3044 | jae .next_cluster |
3047 | jae .next_cluster |
3045 | lea eax, [edi-2] |
3048 | lea eax, [edi-2] |
3046 | imul eax, [SECTORS_PER_CLUSTER] |
3049 | imul eax, [SECTORS_PER_CLUSTER] |
3047 | add eax, [DATA_START] |
3050 | add eax, [DATA_START] |
3048 | add eax, ebp |
3051 | add eax, ebp |
3049 | cmp dword [esp+4], -0x200 |
3052 | cmp dword [esp+4], -0x200 |
3050 | jz .noread |
3053 | jz .noread |
3051 | mov ebx, buffer |
3054 | mov ebx, buffer |
3052 | call hd_read |
3055 | call hd_read |
3053 | cmp [hd_error], 0 |
3056 | cmp [hd_error], 0 |
3054 | jnz .err_next |
3057 | jnz .err_next |
3055 | .noread: |
3058 | .noread: |
3056 | mov ecx, [esp+4] |
3059 | mov ecx, [esp+4] |
3057 | neg ecx |
3060 | neg ecx |
3058 | push edi |
3061 | push edi |
3059 | mov edi, buffer+0x200 |
3062 | mov edi, buffer+0x200 |
3060 | add edi, [esp+8] |
3063 | add edi, [esp+8] |
3061 | push eax |
3064 | push eax |
3062 | xor eax, eax |
3065 | xor eax, eax |
3063 | mov [esp+12], eax |
3066 | mov [esp+12], eax |
3064 | rep stosb |
3067 | rep stosb |
3065 | pop eax |
3068 | pop eax |
3066 | pop edi |
3069 | pop edi |
3067 | call hd_write |
3070 | call hd_write |
3068 | cmp [hd_error], 0 |
3071 | cmp [hd_error], 0 |
3069 | jz .next_cluster |
3072 | jz .next_cluster |
3070 | .err_next: |
3073 | .err_next: |
3071 | mov byte [esp], 11 |
3074 | mov byte [esp], 11 |
3072 | .next_cluster: |
3075 | .next_cluster: |
3073 | sub dword [esp+20], 0x200 |
3076 | sub dword [esp+20], 0x200 |
3074 | jbe .pop_ret |
3077 | jbe .pop_ret |
3075 | inc ebp |
3078 | inc ebp |
3076 | cmp ebp, [SECTORS_PER_CLUSTER] |
3079 | cmp ebp, [SECTORS_PER_CLUSTER] |
3077 | jb .zero_loop |
3080 | jb .zero_loop |
3078 | xor ebp, ebp |
3081 | xor ebp, ebp |
3079 | mov eax, edi |
3082 | mov eax, edi |
3080 | call get_FAT |
3083 | call get_FAT |
3081 | mov edi, eax |
3084 | mov edi, eax |
3082 | cmp [hd_error], 0 |
3085 | cmp [hd_error], 0 |
3083 | jnz .pop_ret11 |
3086 | jnz .pop_ret11 |
3084 | jmp .zero_loop |
3087 | jmp .zero_loop |
3085 | .truncate: |
3088 | .truncate: |
3086 | mov [edi+28], eax |
3089 | mov [edi+28], eax |
3087 | push ecx |
3090 | push ecx |
3088 | mov ecx, [edi+20-2] |
3091 | mov ecx, [edi+20-2] |
3089 | mov cx, [edi+26] |
3092 | mov cx, [edi+26] |
3090 | push eax |
3093 | push eax |
3091 | test eax, eax |
3094 | test eax, eax |
3092 | jz .zero_size |
3095 | jz .zero_size |
3093 | ; find new last cluster |
3096 | ; find new last cluster |
3094 | @@: |
3097 | @@: |
3095 | mov eax, [SECTORS_PER_CLUSTER] |
3098 | mov eax, [SECTORS_PER_CLUSTER] |
3096 | shl eax, 9 |
3099 | shl eax, 9 |
3097 | sub [esp], eax |
3100 | sub [esp], eax |
3098 | jbe @f |
3101 | jbe @f |
3099 | mov eax, ecx |
3102 | mov eax, ecx |
3100 | call get_FAT |
3103 | call get_FAT |
3101 | mov ecx, eax |
3104 | mov ecx, eax |
3102 | cmp [hd_error], 0 |
3105 | cmp [hd_error], 0 |
3103 | jz @b |
3106 | jz @b |
3104 | .device_err3: |
3107 | .device_err3: |
3105 | pop eax ecx eax edi |
3108 | pop eax ecx eax edi |
3106 | push 11 |
3109 | push 11 |
3107 | pop eax |
3110 | pop eax |
3108 | ret |
3111 | ret |
3109 | @@: |
3112 | @@: |
3110 | ; we will zero data at the end of last sector - remember it |
3113 | ; we will zero data at the end of last sector - remember it |
3111 | push ecx |
3114 | push ecx |
3112 | ; terminate FAT chain |
3115 | ; terminate FAT chain |
3113 | push edx |
3116 | push edx |
3114 | mov eax, ecx |
3117 | mov eax, ecx |
3115 | mov edx, [fatEND] |
3118 | mov edx, [fatEND] |
3116 | call set_FAT |
3119 | call set_FAT |
3117 | mov eax, edx |
3120 | mov eax, edx |
3118 | pop edx |
3121 | pop edx |
3119 | cmp [hd_error], 0 |
3122 | cmp [hd_error], 0 |
3120 | jz @f |
3123 | jz @f |
3121 | .device_err4: |
3124 | .device_err4: |
3122 | pop ecx |
3125 | pop ecx |
3123 | jmp .device_err3 |
3126 | jmp .device_err3 |
3124 | .zero_size: |
3127 | .zero_size: |
3125 | and word [edi+20], 0 |
3128 | and word [edi+20], 0 |
3126 | and word [edi+26], 0 |
3129 | and word [edi+26], 0 |
3127 | push 0 |
3130 | push 0 |
3128 | mov eax, ecx |
3131 | mov eax, ecx |
3129 | @@: |
3132 | @@: |
3130 | ; delete FAT chain |
3133 | ; delete FAT chain |
3131 | call clear_cluster_chain |
3134 | call clear_cluster_chain |
3132 | cmp [hd_error], 0 |
3135 | cmp [hd_error], 0 |
3133 | jnz .device_err4 |
3136 | jnz .device_err4 |
3134 | ; save directory |
3137 | ; save directory |
3135 | mov eax, [esp+12] |
3138 | mov eax, [esp+12] |
3136 | push ebx |
3139 | push ebx |
3137 | mov ebx, buffer |
3140 | mov ebx, buffer |
3138 | call hd_write |
3141 | call hd_write |
3139 | pop ebx |
3142 | pop ebx |
3140 | cmp [hd_error], 0 |
3143 | cmp [hd_error], 0 |
3141 | jnz .device_err4 |
3144 | jnz .device_err4 |
3142 | ; zero last sector, ignore errors |
3145 | ; zero last sector, ignore errors |
3143 | pop ecx |
3146 | pop ecx |
3144 | pop eax |
3147 | pop eax |
3145 | dec ecx |
3148 | dec ecx |
3146 | imul ecx, [SECTORS_PER_CLUSTER] |
3149 | imul ecx, [SECTORS_PER_CLUSTER] |
3147 | add ecx, [DATA_START] |
3150 | add ecx, [DATA_START] |
3148 | push eax |
3151 | push eax |
3149 | sar eax, 9 |
3152 | sar eax, 9 |
3150 | add ecx, eax |
3153 | add ecx, eax |
3151 | pop eax |
3154 | pop eax |
3152 | and eax, 0x1FF |
3155 | and eax, 0x1FF |
3153 | jz .truncate_done |
3156 | jz .truncate_done |
3154 | push ebx eax |
3157 | push ebx eax |
3155 | mov eax, ecx |
3158 | mov eax, ecx |
3156 | mov ebx, buffer |
3159 | mov ebx, buffer |
3157 | call hd_read |
3160 | call hd_read |
3158 | pop eax |
3161 | pop eax |
3159 | lea edi, [buffer+eax] |
3162 | lea edi, [buffer+eax] |
3160 | push ecx |
3163 | push ecx |
3161 | mov ecx, 0x200 |
3164 | mov ecx, 0x200 |
3162 | sub ecx, eax |
3165 | sub ecx, eax |
3163 | xor eax, eax |
3166 | xor eax, eax |
3164 | rep stosb |
3167 | rep stosb |
3165 | pop eax |
3168 | pop eax |
3166 | call hd_write |
3169 | call hd_write |
3167 | pop ebx |
3170 | pop ebx |
3168 | .truncate_done: |
3171 | .truncate_done: |
3169 | pop ecx eax edi |
3172 | pop ecx eax edi |
3170 | call update_disk |
3173 | call update_disk |
3171 | xor eax, eax |
3174 | xor eax, eax |
3172 | cmp [hd_error], 0 |
3175 | cmp [hd_error], 0 |
3173 | jz @f |
3176 | jz @f |
3174 | mov al, 11 |
3177 | mov al, 11 |
3175 | @@: |
3178 | @@: |
3176 | ret |
3179 | ret |
3177 | 3180 | ||
3178 | fs_HdGetFileInfo: |
3181 | fs_HdGetFileInfo: |
3179 | cmp [fs_type], 1 |
3182 | cmp [fs_type], 1 |
3180 | jz ntfs_HdGetFileInfo |
3183 | jz ntfs_HdGetFileInfo |
3181 | cmp [fs_type], 16 |
3184 | cmp [fs_type], 16 |
3182 | jz @f |
3185 | jz @f |
3183 | cmp [fs_type], 32 |
3186 | cmp [fs_type], 32 |
3184 | jz @f |
3187 | jz @f |
3185 | mov eax, ERROR_UNKNOWN_FS |
3188 | mov eax, ERROR_UNKNOWN_FS |
3186 | ret |
3189 | ret |
3187 | @@: |
3190 | @@: |
3188 | cmp byte [esi], 0 |
3191 | cmp byte [esi], 0 |
3189 | jnz @f |
3192 | jnz @f |
3190 | mov eax, 2 |
3193 | mov eax, 2 |
3191 | ret |
3194 | ret |
3192 | @@: |
3195 | @@: |
3193 | push edi |
3196 | push edi |
3194 | call hd_find_lfn |
3197 | call hd_find_lfn |
3195 | pushfd |
3198 | pushfd |
3196 | cmp [hd_error], 0 |
3199 | cmp [hd_error], 0 |
3197 | jz @f |
3200 | jz @f |
3198 | popfd |
3201 | popfd |
3199 | pop edi |
3202 | pop edi |
3200 | mov eax, 11 |
3203 | mov eax, 11 |
3201 | ret |
3204 | ret |
3202 | @@: |
3205 | @@: |
3203 | popfd |
3206 | popfd |
3204 | jmp fs_GetFileInfo_finish |
3207 | jmp fs_GetFileInfo_finish |
3205 | 3208 | ||
3206 | fs_HdSetFileInfo: |
3209 | fs_HdSetFileInfo: |
3207 | cmp [fs_type], 1 |
3210 | cmp [fs_type], 1 |
3208 | jz ntfs_HdSetFileInfo |
3211 | jz ntfs_HdSetFileInfo |
3209 | cmp [fs_type], 16 |
3212 | cmp [fs_type], 16 |
3210 | jz @f |
3213 | jz @f |
3211 | cmp [fs_type], 32 |
3214 | cmp [fs_type], 32 |
3212 | jz @f |
3215 | jz @f |
3213 | mov eax, ERROR_UNKNOWN_FS |
3216 | mov eax, ERROR_UNKNOWN_FS |
3214 | ret |
3217 | ret |
3215 | @@: |
3218 | @@: |
3216 | cmp byte [esi], 0 |
3219 | cmp byte [esi], 0 |
3217 | jnz @f |
3220 | jnz @f |
3218 | mov eax, 2 |
3221 | mov eax, 2 |
3219 | ret |
3222 | ret |
3220 | @@: |
3223 | @@: |
3221 | push edi |
3224 | push edi |
3222 | call hd_find_lfn |
3225 | call hd_find_lfn |
3223 | pushfd |
3226 | pushfd |
3224 | cmp [hd_error], 0 |
3227 | cmp [hd_error], 0 |
3225 | jz @f |
3228 | jz @f |
3226 | popfd |
3229 | popfd |
3227 | pop edi |
3230 | pop edi |
3228 | mov eax, 11 |
3231 | mov eax, 11 |
3229 | ret |
3232 | ret |
3230 | @@: |
3233 | @@: |
3231 | popfd |
3234 | popfd |
3232 | jnc @f |
3235 | jnc @f |
3233 | pop edi |
3236 | pop edi |
3234 | mov eax, ERROR_FILE_NOT_FOUND |
3237 | mov eax, ERROR_FILE_NOT_FOUND |
3235 | ret |
3238 | ret |
3236 | @@: |
3239 | @@: |
3237 | push eax |
3240 | push eax |
3238 | call bdfe_to_fat_entry |
3241 | call bdfe_to_fat_entry |
3239 | pop eax |
3242 | pop eax |
3240 | mov ebx, buffer |
3243 | mov ebx, buffer |
3241 | call hd_write |
3244 | call hd_write |
3242 | call update_disk |
3245 | call update_disk |
3243 | pop edi |
3246 | pop edi |
3244 | xor eax, eax |
3247 | xor eax, eax |
3245 | ret |
3248 | ret |
3246 | 3249 | ||
3247 | if 0 ; starting from revision 237 execute is implemented in taskman.inc |
3250 | if 0 ; starting from revision 237 execute is implemented in taskman.inc |
3248 | ; through fs_XxxGetFileInfo and fs_XxxRead |
3251 | ; through fs_XxxGetFileInfo and fs_XxxRead |
3249 | ;---------------------------------------------------------------- |
3252 | ;---------------------------------------------------------------- |
3250 | ; |
3253 | ; |
3251 | ; fs_HdExecute - LFN variant for executing from harddisk |
3254 | ; fs_HdExecute - LFN variant for executing from harddisk |
3252 | ; |
3255 | ; |
3253 | ; esi points to hd filename (e.g. 'dir1/name') |
3256 | ; esi points to hd filename (e.g. 'dir1/name') |
3254 | ; ebp points to full filename (e.g. '/hd0/1/dir1/name') |
3257 | ; ebp points to full filename (e.g. '/hd0/1/dir1/name') |
3255 | ; dword [ebx] = flags |
3258 | ; dword [ebx] = flags |
3256 | ; dword [ebx+4] = cmdline |
3259 | ; dword [ebx+4] = cmdline |
3257 | ; |
3260 | ; |
3258 | ; ret ebx,edx destroyed |
3261 | ; ret ebx,edx destroyed |
3259 | ; eax > 0 - PID, < 0 - error |
3262 | ; eax > 0 - PID, < 0 - error |
3260 | ; |
3263 | ; |
3261 | ;-------------------------------------------------------------- |
3264 | ;-------------------------------------------------------------- |
3262 | fs_HdExecute: |
3265 | fs_HdExecute: |
3263 | mov edx, [ebx] |
3266 | mov edx, [ebx] |
3264 | mov ebx, [ebx+4] |
3267 | mov ebx, [ebx+4] |
3265 | test ebx, ebx |
3268 | test ebx, ebx |
3266 | jz @f |
3269 | jz @f |
3267 | add ebx, std_application_base_address |
3270 | add ebx, std_application_base_address |
3268 | @@: |
3271 | @@: |
3269 | 3272 | ||
3270 | ;---------------------------------------------------------------- |
3273 | ;---------------------------------------------------------------- |
3271 | ; |
3274 | ; |
3272 | ; fs_HdExecute.flags - second entry |
3275 | ; fs_HdExecute.flags - second entry |
3273 | ; |
3276 | ; |
3274 | ; esi points to floppy filename (kernel address) |
3277 | ; esi points to floppy filename (kernel address) |
3275 | ; ebp points to full filename |
3278 | ; ebp points to full filename |
3276 | ; edx flags |
3279 | ; edx flags |
3277 | ; ebx cmdline (kernel address) |
3280 | ; ebx cmdline (kernel address) |
3278 | ; |
3281 | ; |
3279 | ; ret eax > 0 - PID, < 0 - error |
3282 | ; ret eax > 0 - PID, < 0 - error |
3280 | ; |
3283 | ; |
3281 | ;-------------------------------------------------------------- |
3284 | ;-------------------------------------------------------------- |
3282 | 3285 | ||
3283 | .flags: |
3286 | .flags: |
3284 | cmp [fat_type], 0 |
3287 | cmp [fat_type], 0 |
3285 | jnz @f |
3288 | jnz @f |
3286 | mov eax, -ERROR_UNKNOWN_FS |
3289 | mov eax, -ERROR_UNKNOWN_FS |
3287 | ret |
3290 | ret |
3288 | @@: |
3291 | @@: |
3289 | cmp byte [esi], 0 |
3292 | cmp byte [esi], 0 |
3290 | jnz @f |
3293 | jnz @f |
3291 | ; cannot execute root! |
3294 | ; cannot execute root! |
3292 | mov eax, -ERROR_ACCESS_DENIED |
3295 | mov eax, -ERROR_ACCESS_DENIED |
3293 | ret |
3296 | ret |
3294 | @@: |
3297 | @@: |
3295 | push edi |
3298 | push edi |
3296 | call hd_find_lfn |
3299 | call hd_find_lfn |
3297 | jnc .found |
3300 | jnc .found |
3298 | pop edi |
3301 | pop edi |
3299 | mov eax, -ERROR_FILE_NOT_FOUND |
3302 | mov eax, -ERROR_FILE_NOT_FOUND |
3300 | cmp [hd_error], 0 |
3303 | cmp [hd_error], 0 |
3301 | jz @f |
3304 | jz @f |
3302 | mov al, -11 |
3305 | mov al, -11 |
3303 | @@: |
3306 | @@: |
3304 | ret |
3307 | ret |
3305 | .found: |
3308 | .found: |
3306 | mov eax, [edi+20-2] |
3309 | mov eax, [edi+20-2] |
3307 | mov ax, [edi+26] |
3310 | mov ax, [edi+26] |
3308 | push 0 |
3311 | push 0 |
3309 | push eax |
3312 | push eax |
3310 | push dword [edi+28] ; size |
3313 | push dword [edi+28] ; size |
3311 | push .DoRead |
3314 | push .DoRead |
3312 | call fs_execute |
3315 | call fs_execute |
3313 | add esp, 16 |
3316 | add esp, 16 |
3314 | pop edi |
3317 | pop edi |
3315 | ret |
3318 | ret |
3316 | 3319 | ||
3317 | .DoRead: |
3320 | .DoRead: |
3318 | ; read next block |
3321 | ; read next block |
3319 | ; in: eax->parameters, edi->buffer |
3322 | ; in: eax->parameters, edi->buffer |
3320 | ; out: eax = error code |
3323 | ; out: eax = error code |
3321 | pushad |
3324 | pushad |
3322 | cmp dword [eax], 0 ; file size |
3325 | cmp dword [eax], 0 ; file size |
3323 | jz .eof |
3326 | jz .eof |
3324 | add eax, 4 |
3327 | add eax, 4 |
3325 | call fat_get_sector |
3328 | call fat_get_sector |
3326 | mov ebx, edi |
3329 | mov ebx, edi |
3327 | call hd_read |
3330 | call hd_read |
3328 | cmp [hd_error], 0 |
3331 | cmp [hd_error], 0 |
3329 | jnz .err |
3332 | jnz .err |
3330 | mov eax, [esp+28] |
3333 | mov eax, [esp+28] |
3331 | mov ecx, [eax] |
3334 | mov ecx, [eax] |
3332 | sub ecx, 512 |
3335 | sub ecx, 512 |
3333 | jae @f |
3336 | jae @f |
3334 | lea edi, [edi+ecx+512] |
3337 | lea edi, [edi+ecx+512] |
3335 | neg ecx |
3338 | neg ecx |
3336 | push eax |
3339 | push eax |
3337 | xor eax, eax |
3340 | xor eax, eax |
3338 | rep stosb |
3341 | rep stosb |
3339 | pop eax |
3342 | pop eax |
3340 | @@: |
3343 | @@: |
3341 | mov [eax], ecx |
3344 | mov [eax], ecx |
3342 | mov edx, [eax+8] |
3345 | mov edx, [eax+8] |
3343 | inc edx |
3346 | inc edx |
3344 | cmp edx, [SECTORS_PER_CLUSTER] |
3347 | cmp edx, [SECTORS_PER_CLUSTER] |
3345 | jb @f |
3348 | jb @f |
3346 | push eax |
3349 | push eax |
3347 | mov eax, [eax+4] |
3350 | mov eax, [eax+4] |
3348 | call get_FAT |
3351 | call get_FAT |
3349 | cmp [hd_error], 0 |
3352 | cmp [hd_error], 0 |
3350 | jnz .err |
3353 | jnz .err |
3351 | mov ecx, eax |
3354 | mov ecx, eax |
3352 | pop eax |
3355 | pop eax |
3353 | mov [eax+4], ecx |
3356 | mov [eax+4], ecx |
3354 | xor edx, edx |
3357 | xor edx, edx |
3355 | @@: |
3358 | @@: |
3356 | mov [eax+8], edx |
3359 | mov [eax+8], edx |
3357 | popad |
3360 | popad |
3358 | xor eax, eax |
3361 | xor eax, eax |
3359 | ret |
3362 | ret |
3360 | .eof: |
3363 | .eof: |
3361 | popad |
3364 | popad |
3362 | mov eax, 6 |
3365 | mov eax, 6 |
3363 | ret |
3366 | ret |
3364 | .err: |
3367 | .err: |
3365 | popad |
3368 | popad |
3366 | mov eax, 11 |
3369 | mov eax, 11 |
3367 | ret |
3370 | ret |
3368 | end if |
3371 | end if |
3369 | 3372 | ||
3370 | ;---------------------------------------------------------------- |
3373 | ;---------------------------------------------------------------- |
3371 | ; |
3374 | ; |
3372 | ; fs_HdDelete - delete file or empty folder from hard disk |
3375 | ; fs_HdDelete - delete file or empty folder from hard disk |
3373 | ; |
3376 | ; |
3374 | ; esi points to filename |
3377 | ; esi points to filename |
3375 | ; |
3378 | ; |
3376 | ; ret eax = 0 ok or other = errormsg |
3379 | ; ret eax = 0 ok or other = errormsg |
3377 | ; |
3380 | ; |
3378 | ;-------------------------------------------------------------- |
3381 | ;-------------------------------------------------------------- |
3379 | fs_HdDelete: |
3382 | fs_HdDelete: |
3380 | cmp [fs_type], 1 |
3383 | cmp [fs_type], 1 |
3381 | jz ntfs_HdDelete |
3384 | jz ntfs_HdDelete |
3382 | cmp [fs_type], 16 |
3385 | cmp [fs_type], 16 |
3383 | jz @f |
3386 | jz @f |
3384 | cmp [fs_type], 32 |
3387 | cmp [fs_type], 32 |
3385 | jz @f |
3388 | jz @f |
3386 | push ERROR_UNKNOWN_FS |
3389 | push ERROR_UNKNOWN_FS |
3387 | .pop_ret: |
3390 | .pop_ret: |
3388 | pop eax |
3391 | pop eax |
3389 | ret |
3392 | ret |
3390 | @@: |
3393 | @@: |
3391 | cmp byte [esi], 0 |
3394 | cmp byte [esi], 0 |
3392 | jnz @f |
3395 | jnz @f |
3393 | ; cannot delete root! |
3396 | ; cannot delete root! |
3394 | .access_denied: |
3397 | .access_denied: |
3395 | push ERROR_ACCESS_DENIED |
3398 | push ERROR_ACCESS_DENIED |
3396 | jmp .pop_ret |
3399 | jmp .pop_ret |
3397 | @@: |
3400 | @@: |
3398 | and [longname_sec1], 0 |
3401 | and [longname_sec1], 0 |
3399 | and [longname_sec2], 0 |
3402 | and [longname_sec2], 0 |
3400 | push edi |
3403 | push edi |
3401 | call hd_find_lfn |
3404 | call hd_find_lfn |
3402 | jnc .found |
3405 | jnc .found |
3403 | pop edi |
3406 | pop edi |
3404 | push ERROR_FILE_NOT_FOUND |
3407 | push ERROR_FILE_NOT_FOUND |
3405 | jmp .pop_ret |
3408 | jmp .pop_ret |
3406 | .found: |
3409 | .found: |
3407 | cmp dword [edi], '. ' |
3410 | cmp dword [edi], '. ' |
3408 | jz .access_denied2 |
3411 | jz .access_denied2 |
3409 | cmp dword [edi], '.. ' |
3412 | cmp dword [edi], '.. ' |
3410 | jz .access_denied2 |
3413 | jz .access_denied2 |
3411 | test byte [edi+11], 10h |
3414 | test byte [edi+11], 10h |
3412 | jz .dodel |
3415 | jz .dodel |
3413 | ; we can delete only empty folders! |
3416 | ; we can delete only empty folders! |
3414 | pushad |
3417 | pushad |
3415 | mov ebp, [edi+20-2] |
3418 | mov ebp, [edi+20-2] |
3416 | mov bp, [edi+26] |
3419 | mov bp, [edi+26] |
3417 | xor ecx, ecx |
3420 | xor ecx, ecx |
3418 | lea eax, [ebp-2] |
3421 | lea eax, [ebp-2] |
3419 | imul eax, [SECTORS_PER_CLUSTER] |
3422 | imul eax, [SECTORS_PER_CLUSTER] |
3420 | add eax, [DATA_START] |
3423 | add eax, [DATA_START] |
3421 | mov ebx, buffer |
3424 | mov ebx, buffer |
3422 | call hd_read |
3425 | call hd_read |
3423 | cmp [hd_error], 0 |
3426 | cmp [hd_error], 0 |
3424 | jnz .err1 |
3427 | jnz .err1 |
3425 | add ebx, 2*0x20 |
3428 | add ebx, 2*0x20 |
3426 | .checkempty: |
3429 | .checkempty: |
3427 | cmp byte [ebx], 0 |
3430 | cmp byte [ebx], 0 |
3428 | jz .empty |
3431 | jz .empty |
3429 | cmp byte [ebx], 0xE5 |
3432 | cmp byte [ebx], 0xE5 |
3430 | jnz .notempty |
3433 | jnz .notempty |
3431 | add ebx, 0x20 |
3434 | add ebx, 0x20 |
3432 | cmp ebx, buffer+0x200 |
3435 | cmp ebx, buffer+0x200 |
3433 | jb .checkempty |
3436 | jb .checkempty |
3434 | inc ecx |
3437 | inc ecx |
3435 | cmp ecx, [SECTORS_PER_CLUSTER] |
3438 | cmp ecx, [SECTORS_PER_CLUSTER] |
3436 | jb @f |
3439 | jb @f |
3437 | mov eax, ebp |
3440 | mov eax, ebp |
3438 | call get_FAT |
3441 | call get_FAT |
3439 | cmp [hd_error], 0 |
3442 | cmp [hd_error], 0 |
3440 | jnz .err1 |
3443 | jnz .err1 |
3441 | mov ebp, eax |
3444 | mov ebp, eax |
3442 | xor ecx, ecx |
3445 | xor ecx, ecx |
3443 | @@: |
3446 | @@: |
3444 | lea eax, [ebp-2] |
3447 | lea eax, [ebp-2] |
3445 | imul eax, [SECTORS_PER_CLUSTER] |
3448 | imul eax, [SECTORS_PER_CLUSTER] |
3446 | add eax, [DATA_START] |
3449 | add eax, [DATA_START] |
3447 | add eax, ecx |
3450 | add eax, ecx |
3448 | mov ebx, buffer |
3451 | mov ebx, buffer |
3449 | call hd_read |
3452 | call hd_read |
3450 | cmp [hd_error], 0 |
3453 | cmp [hd_error], 0 |
3451 | jz .checkempty |
3454 | jz .checkempty |
3452 | .err1: |
3455 | .err1: |
3453 | popad |
3456 | popad |
3454 | .err2: |
3457 | .err2: |
3455 | pop edi |
3458 | pop edi |
3456 | push 11 |
3459 | push 11 |
3457 | pop eax |
3460 | pop eax |
3458 | ret |
3461 | ret |
3459 | .notempty: |
3462 | .notempty: |
3460 | popad |
3463 | popad |
3461 | .access_denied2: |
3464 | .access_denied2: |
3462 | pop edi |
3465 | pop edi |
3463 | push ERROR_ACCESS_DENIED |
3466 | push ERROR_ACCESS_DENIED |
3464 | pop eax |
3467 | pop eax |
3465 | ret |
3468 | ret |
3466 | .empty: |
3469 | .empty: |
3467 | popad |
3470 | popad |
3468 | push ebx |
3471 | push ebx |
3469 | mov ebx, buffer |
3472 | mov ebx, buffer |
3470 | call hd_read |
3473 | call hd_read |
3471 | pop ebx |
3474 | pop ebx |
3472 | cmp [hd_error], 0 |
3475 | cmp [hd_error], 0 |
3473 | jnz .err2 |
3476 | jnz .err2 |
3474 | .dodel: |
3477 | .dodel: |
3475 | push eax |
3478 | push eax |
3476 | mov eax, [edi+20-2] |
3479 | mov eax, [edi+20-2] |
3477 | mov ax, [edi+26] |
3480 | mov ax, [edi+26] |
3478 | xchg eax, [esp] |
3481 | xchg eax, [esp] |
3479 | ; delete folder entry |
3482 | ; delete folder entry |
3480 | mov byte [edi], 0xE5 |
3483 | mov byte [edi], 0xE5 |
3481 | ; delete LFN (if present) |
3484 | ; delete LFN (if present) |
3482 | .lfndel: |
3485 | .lfndel: |
3483 | cmp edi, buffer |
3486 | cmp edi, buffer |
3484 | ja @f |
3487 | ja @f |
3485 | cmp [longname_sec2], 0 |
3488 | cmp [longname_sec2], 0 |
3486 | jz .lfndone |
3489 | jz .lfndone |
3487 | push [longname_sec2] |
3490 | push [longname_sec2] |
3488 | push [longname_sec1] |
3491 | push [longname_sec1] |
3489 | pop [longname_sec2] |
3492 | pop [longname_sec2] |
3490 | and [longname_sec1], 0 |
3493 | and [longname_sec1], 0 |
3491 | push ebx |
3494 | push ebx |
3492 | mov ebx, buffer |
3495 | mov ebx, buffer |
3493 | call hd_write |
3496 | call hd_write |
3494 | mov eax, [esp+4] |
3497 | mov eax, [esp+4] |
3495 | call hd_read |
3498 | call hd_read |
3496 | pop ebx |
3499 | pop ebx |
3497 | pop eax |
3500 | pop eax |
3498 | mov edi, buffer+0x200 |
3501 | mov edi, buffer+0x200 |
3499 | @@: |
3502 | @@: |
3500 | sub edi, 0x20 |
3503 | sub edi, 0x20 |
3501 | cmp byte [edi], 0xE5 |
3504 | cmp byte [edi], 0xE5 |
3502 | jz .lfndone |
3505 | jz .lfndone |
3503 | cmp byte [edi+11], 0xF |
3506 | cmp byte [edi+11], 0xF |
3504 | jnz .lfndone |
3507 | jnz .lfndone |
3505 | mov byte [edi], 0xE5 |
3508 | mov byte [edi], 0xE5 |
3506 | jmp .lfndel |
3509 | jmp .lfndel |
3507 | .lfndone: |
3510 | .lfndone: |
3508 | push ebx |
3511 | push ebx |
3509 | mov ebx, buffer |
3512 | mov ebx, buffer |
3510 | call hd_write |
3513 | call hd_write |
3511 | pop ebx |
3514 | pop ebx |
3512 | ; delete FAT chain |
3515 | ; delete FAT chain |
3513 | pop eax |
3516 | pop eax |
3514 | call clear_cluster_chain |
3517 | call clear_cluster_chain |
3515 | call update_disk |
3518 | call update_disk |
3516 | pop edi |
3519 | pop edi |
3517 | xor eax, eax |
3520 | xor eax, eax |
3518 | cmp [hd_error], 0 |
3521 | cmp [hd_error], 0 |
3519 | jz @f |
3522 | jz @f |
3520 | mov al, 11 |
3523 | mov al, 11 |
3521 | @@: |
3524 | @@: |
3522 | ret |
3525 | ret |
3523 | 3526 | ||
3524 | ; \end{diamond}>>=>=>>>> |
3527 | ; \end{diamond}>>=>=>>>> |