Rev 1664 | Only display areas with differences | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 1664 | Rev 3487 | ||
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1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
2 | ;; ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
4 | ;; Distributed under terms of the GNU General Public License ;; |
4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
5 | ;; ;; |
6 | ;; FAT32.INC ;; |
6 | ;; FAT32.INC ;; |
7 | ;; ;; |
7 | ;; ;; |
8 | ;; FAT16/32 functions for KolibriOS ;; |
8 | ;; FAT16/32 functions for KolibriOS ;; |
9 | ;; ;; |
9 | ;; ;; |
10 | ;; Copyright 2002 Paolo Minazzi, paolo.minazzi@inwind.it ;; |
10 | ;; Copyright 2002 Paolo Minazzi, paolo.minazzi@inwind.it ;; |
11 | ;; ;; |
11 | ;; ;; |
12 | ;; See file COPYING for details ;; |
12 | ;; See file COPYING for details ;; |
13 | ;; 04.02.2007 LFN create folder - diamond ;; |
13 | ;; 04.02.2007 LFN create folder - diamond ;; |
14 | ;; 08.10.2006 LFN delete file/folder - diamond ;; |
14 | ;; 08.10.2006 LFN delete file/folder - diamond ;; |
15 | ;; 20.08.2006 LFN set file size (truncate/extend) - diamond ;; |
15 | ;; 20.08.2006 LFN set file size (truncate/extend) - diamond ;; |
16 | ;; 17.08.2006 LFN write/append to file - diamond ;; |
16 | ;; 17.08.2006 LFN write/append to file - diamond ;; |
17 | ;; 23.06.2006 LFN start application - diamond ;; |
17 | ;; 23.06.2006 LFN start application - diamond ;; |
18 | ;; 15.06.2006 LFN get/set file/folder info - diamond ;; |
18 | ;; 15.06.2006 LFN get/set file/folder info - diamond ;; |
19 | ;; 27.05.2006 LFN create/rewrite file - diamond ;; |
19 | ;; 27.05.2006 LFN create/rewrite file - diamond ;; |
20 | ;; 04.05.2006 LFN read folder - diamond ;; |
20 | ;; 04.05.2006 LFN read folder - diamond ;; |
21 | ;; 29.04.2006 Elimination of hangup after the ;; |
21 | ;; 29.04.2006 Elimination of hangup after the ;; |
22 | ;; expiration hd_wait_timeout - Mario79 ;; |
22 | ;; expiration hd_wait_timeout - Mario79 ;; |
23 | ;; 23.04.2006 LFN read file - diamond ;; |
23 | ;; 23.04.2006 LFN read file - diamond ;; |
24 | ;; 28.01.2006 find all Fat16/32 partition in all input point ;; |
24 | ;; 28.01.2006 find all Fat16/32 partition in all input point ;; |
25 | ;; to MBR, see file part_set.inc - Mario79 ;; |
25 | ;; to MBR, see file part_set.inc - Mario79 ;; |
26 | ;; 15.01.2005 get file size/attr/date, file_append - ATV ;; |
26 | ;; 15.01.2005 get file size/attr/date, file_append - ATV ;; |
27 | ;; 04.12.2004 skip volume label, file delete bug fixed - ATV ;; |
27 | ;; 04.12.2004 skip volume label, file delete bug fixed - ATV ;; |
28 | ;; 29.11.2004 get_free_FAT changed, append dir bug fixed - ATV ;; |
28 | ;; 29.11.2004 get_free_FAT changed, append dir bug fixed - ATV ;; |
29 | ;; 23.11.2004 don't allow overwrite dir with file - ATV ;; |
29 | ;; 23.11.2004 don't allow overwrite dir with file - ATV ;; |
30 | ;; 18.11.2004 get_disk_info and more error codes - ATV ;; |
30 | ;; 18.11.2004 get_disk_info and more error codes - ATV ;; |
31 | ;; 17.11.2004 set_FAT/get_FAT and disk cache rewritten - ATV ;; |
31 | ;; 17.11.2004 set_FAT/get_FAT and disk cache rewritten - ATV ;; |
32 | ;; 10.11.2004 removedir clear whole directory structure - ATV ;; |
32 | ;; 10.11.2004 removedir clear whole directory structure - ATV ;; |
33 | ;; 08.11.2004 rename - ATV ;; |
33 | ;; 08.11.2004 rename - ATV ;; |
34 | ;; 30.10.2004 file_read return also dirsize in bytes - ATV ;; |
34 | ;; 30.10.2004 file_read return also dirsize in bytes - ATV ;; |
35 | ;; 20.10.2004 Makedir/Removedir - ATV ;; |
35 | ;; 20.10.2004 Makedir/Removedir - ATV ;; |
36 | ;; 14.10.2004 Partition chain/Fat16 - ATV (thanks drh3xx) ;; |
36 | ;; 14.10.2004 Partition chain/Fat16 - ATV (thanks drh3xx) ;; |
37 | ;; 06.9.2004 Fix free space by Mario79 added - MH ;; |
37 | ;; 06.9.2004 Fix free space by Mario79 added - MH ;; |
38 | ;; 24.5.2004 Write back buffer for File_write -VT ;; |
38 | ;; 24.5.2004 Write back buffer for File_write -VT ;; |
39 | ;; 20.5.2004 File_read function to work with syscall 58 - VT ;; |
39 | ;; 20.5.2004 File_read function to work with syscall 58 - VT ;; |
40 | ;; 30.3.2004 Error parameters at function return - VT ;; |
40 | ;; 30.3.2004 Error parameters at function return - VT ;; |
41 | ;; 01.5.2002 Bugfix in device write - VT ;; |
41 | ;; 01.5.2002 Bugfix in device write - VT ;; |
42 | ;; 20.5.2002 Hd status check - VT ;; |
42 | ;; 20.5.2002 Hd status check - VT ;; |
43 | ;; 29.6.2002 Improved fat32 verification - VT ;; |
43 | ;; 29.6.2002 Improved fat32 verification - VT ;; |
44 | ;; ;; |
44 | ;; ;; |
45 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
45 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
46 | 46 | ||
47 | $Revision: 1664 $ |
47 | $Revision: 3487 $ |
48 | 48 | ||
49 | 49 | ||
50 | cache_max equ 1919 ; max. is 1919*512+0x610000=0x6ffe00 |
50 | cache_max equ 1919 ; max. is 1919*512+0x610000=0x6ffe00 |
51 | 51 | ||
52 | ERROR_SUCCESS = 0 |
52 | ERROR_SUCCESS = 0 |
53 | ERROR_DISK_BASE = 1 |
53 | ERROR_DISK_BASE = 1 |
54 | ERROR_UNSUPPORTED_FS = 2 |
54 | ERROR_UNSUPPORTED_FS = 2 |
55 | ERROR_UNKNOWN_FS = 3 |
55 | ERROR_UNKNOWN_FS = 3 |
56 | ERROR_PARTITION = 4 |
56 | ERROR_PARTITION = 4 |
57 | ERROR_FILE_NOT_FOUND = 5 |
57 | ERROR_FILE_NOT_FOUND = 5 |
58 | ERROR_END_OF_FILE = 6 |
58 | ERROR_END_OF_FILE = 6 |
59 | ERROR_MEMORY_POINTER = 7 |
59 | ERROR_MEMORY_POINTER = 7 |
60 | ERROR_DISK_FULL = 8 |
60 | ERROR_DISK_FULL = 8 |
61 | ERROR_FAT_TABLE = 9 |
61 | ERROR_FAT_TABLE = 9 |
62 | ERROR_ACCESS_DENIED = 10 |
62 | ERROR_ACCESS_DENIED = 10 |
63 | 63 | ||
64 | PUSHAD_EAX equ [esp+28] |
64 | PUSHAD_EAX equ [esp+28] |
65 | PUSHAD_ECX equ [esp+24] |
65 | PUSHAD_ECX equ [esp+24] |
66 | PUSHAD_EDX equ [esp+20] |
66 | PUSHAD_EDX equ [esp+20] |
67 | PUSHAD_EBX equ [esp+16] |
67 | PUSHAD_EBX equ [esp+16] |
68 | PUSHAD_EBP equ [esp+8] |
68 | PUSHAD_EBP equ [esp+8] |
69 | PUSHAD_ESI equ [esp+4] |
69 | PUSHAD_ESI equ [esp+4] |
70 | PUSHAD_EDI equ [esp+0] |
70 | PUSHAD_EDI equ [esp+0] |
71 | 71 | ||
72 | uglobal |
72 | uglobal |
73 | align 4 |
73 | align 4 |
74 | partition_count dd 0 ; partitions found by set_FAT32_variables |
74 | partition_count dd 0 ; partitions found by set_FAT32_variables |
75 | longname_sec1 dd 0 ; used by analyze_directory to save 2 previous |
75 | longname_sec1 dd 0 ; used by analyze_directory to save 2 previous |
76 | longname_sec2 dd 0 ; directory sectors for delete long filename |
76 | longname_sec2 dd 0 ; directory sectors for delete long filename |
77 | 77 | ||
78 | hd_error dd 0 ; set by wait_for_sector_buffer |
78 | hd_error dd 0 ; set by wait_for_sector_buffer |
79 | hd_setup dd 0 |
79 | hd_setup dd 0 |
80 | hd_wait_timeout dd 0 |
80 | hd_wait_timeout dd 0 |
81 | 81 | ||
82 | cluster_tmp dd 0 ; used by analyze_directory |
82 | cluster_tmp dd 0 ; used by analyze_directory |
83 | ; and analyze_directory_to_write |
83 | ; and analyze_directory_to_write |
84 | 84 | ||
85 | file_size dd 0 ; used by file_read |
85 | file_size dd 0 ; used by file_read |
86 | 86 | ||
87 | cache_search_start dd 0 ; used by find_empty_slot |
87 | cache_search_start dd 0 ; used by find_empty_slot |
88 | endg |
88 | endg |
89 | 89 | ||
90 | iglobal |
90 | iglobal |
91 | fat_in_cache dd -1 |
91 | fat_in_cache dd -1 |
92 | endg |
92 | endg |
93 | 93 | ||
94 | uglobal |
94 | uglobal |
95 | align 4 |
95 | align 4 |
96 | fat_cache: times 512 db 0 |
96 | fat_cache: times 512 db 0 |
97 | Sector512: ; label for dev_hdcd.inc |
97 | Sector512: ; label for dev_hdcd.inc |
98 | buffer: times 512 db 0 |
98 | buffer: times 512 db 0 |
99 | fsinfo_buffer: times 512 db 0 |
99 | fsinfo_buffer: times 512 db 0 |
100 | endg |
100 | endg |
101 | 101 | ||
102 | uglobal |
102 | uglobal |
103 | fat16_root db 0 ; flag for fat16 rootdir |
103 | fat16_root db 0 ; flag for fat16 rootdir |
104 | fat_change db 0 ; 1=fat has changed |
104 | fat_change db 0 ; 1=fat has changed |
105 | endg |
105 | endg |
106 | 106 | ||
107 | reserve_hd1: |
107 | reserve_hd1: |
108 | 108 | ||
109 | cli |
109 | cli |
110 | cmp [hd1_status],0 |
110 | cmp [hd1_status],0 |
111 | je reserve_ok1 |
111 | je reserve_ok1 |
112 | 112 | ||
113 | sti |
113 | sti |
114 | call change_task |
114 | call change_task |
115 | jmp reserve_hd1 |
115 | jmp reserve_hd1 |
116 | 116 | ||
117 | reserve_ok1: |
117 | reserve_ok1: |
118 | 118 | ||
119 | push eax |
119 | push eax |
120 | mov eax,[CURRENT_TASK] |
120 | mov eax,[CURRENT_TASK] |
121 | shl eax,5 |
121 | shl eax,5 |
122 | mov eax,[eax+CURRENT_TASK+TASKDATA.pid] |
122 | mov eax,[eax+CURRENT_TASK+TASKDATA.pid] |
123 | mov [hd1_status],eax |
123 | mov [hd1_status],eax |
124 | pop eax |
124 | pop eax |
125 | sti |
125 | sti |
126 | ret |
126 | ret |
127 | ;******************************************** |
127 | ;******************************************** |
128 | 128 | ||
129 | uglobal |
129 | uglobal |
130 | hd_in_cache db ? |
130 | hd_in_cache db ? |
131 | IDE_Channel_1 db 0 ; moved from fs/iso9660.inc |
131 | IDE_Channel_1 db 0 ; moved from fs/iso9660.inc |
132 | IDE_Channel_2 db 0 |
132 | IDE_Channel_2 db 0 |
133 | endg |
133 | endg |
134 | 134 | ||
135 | reserve_hd_channel: |
135 | reserve_hd_channel: |
136 | ; BIOS disk accesses are protected with common mutex hd1_status |
136 | ; BIOS disk accesses are protected with common mutex hd1_status |
137 | ; This must be modified when hd1_status will not be valid! |
137 | ; This must be modified when hd1_status will not be valid! |
138 | cmp [hdpos], 0x80 |
138 | cmp [hdpos], 0x80 |
139 | jae .ret |
139 | jae .ret |
140 | cmp [hdbase], 0x1F0 |
140 | cmp [hdbase], 0x1F0 |
141 | jne .IDE_Channel_2 |
141 | jne .IDE_Channel_2 |
142 | .IDE_Channel_1: |
142 | .IDE_Channel_1: |
143 | cli |
143 | cli |
144 | cmp [IDE_Channel_1],0 |
144 | cmp [IDE_Channel_1],0 |
145 | je .reserve_ok_1 |
145 | je .reserve_ok_1 |
146 | sti |
146 | sti |
147 | call change_task |
147 | call change_task |
148 | jmp .IDE_Channel_1 |
148 | jmp .IDE_Channel_1 |
149 | .IDE_Channel_2: |
149 | .IDE_Channel_2: |
150 | cli |
150 | cli |
151 | cmp [IDE_Channel_2],0 |
151 | cmp [IDE_Channel_2],0 |
152 | je .reserve_ok_2 |
152 | je .reserve_ok_2 |
153 | sti |
153 | sti |
154 | call change_task |
154 | call change_task |
155 | jmp .IDE_Channel_2 |
155 | jmp .IDE_Channel_2 |
156 | .reserve_ok_1: |
156 | .reserve_ok_1: |
157 | mov [IDE_Channel_1], 1 |
157 | mov [IDE_Channel_1], 1 |
158 | push eax |
158 | push eax |
159 | mov al, 1 |
159 | mov al, 1 |
160 | jmp @f |
160 | jmp @f |
161 | .reserve_ok_2: |
161 | .reserve_ok_2: |
162 | mov [IDE_Channel_2], 1 |
162 | mov [IDE_Channel_2], 1 |
163 | push eax |
163 | push eax |
164 | mov al, 3 |
164 | mov al, 3 |
165 | @@: |
165 | @@: |
166 | cmp [hdid], 1 |
166 | cmp [hdid], 1 |
167 | sbb al, -1 |
167 | sbb al, -1 |
168 | cmp al, [hd_in_cache] |
168 | cmp al, [hd_in_cache] |
169 | jz @f |
169 | jz @f |
170 | mov [hd_in_cache], al |
170 | mov [hd_in_cache], al |
171 | call clear_hd_cache |
171 | call clear_hd_cache |
172 | @@: |
172 | @@: |
173 | pop eax |
173 | pop eax |
174 | sti |
174 | sti |
175 | .ret: |
175 | .ret: |
176 | ret |
176 | ret |
177 | 177 | ||
178 | free_hd_channel: |
178 | free_hd_channel: |
179 | ; see comment at reserve_hd_channel |
179 | ; see comment at reserve_hd_channel |
180 | cmp [hdpos], 0x80 |
180 | cmp [hdpos], 0x80 |
181 | jae .ret |
181 | jae .ret |
182 | cmp [hdbase], 0x1F0 |
182 | cmp [hdbase], 0x1F0 |
183 | jne .IDE_Channel_2 |
183 | jne .IDE_Channel_2 |
184 | .IDE_Channel_1: |
184 | .IDE_Channel_1: |
185 | mov [IDE_Channel_1],0 |
185 | mov [IDE_Channel_1],0 |
186 | .ret: |
186 | .ret: |
187 | ret |
187 | ret |
188 | .IDE_Channel_2: |
188 | .IDE_Channel_2: |
189 | mov [IDE_Channel_2],0 |
189 | mov [IDE_Channel_2],0 |
190 | ret |
190 | ret |
191 | ;******************************************** |
191 | ;******************************************** |
192 | problem_partition db 0 ; used for partitions search |
192 | problem_partition db 0 ; used for partitions search |
193 | 193 | ||
194 | include 'part_set.inc' |
194 | include 'part_set.inc' |
195 | 195 | ||
196 | set_FAT: |
196 | set_FAT: |
197 | ;-------------------------------- |
197 | ;-------------------------------- |
198 | ; input : EAX = cluster |
198 | ; input : EAX = cluster |
199 | ; EDX = value to save |
199 | ; EDX = value to save |
200 | ; output : EDX = old value |
200 | ; output : EDX = old value |
201 | ;-------------------------------- |
201 | ;-------------------------------- |
202 | push eax ebx esi |
202 | push eax ebx esi |
203 | 203 | ||
204 | cmp eax,2 |
204 | cmp eax,2 |
205 | jb sfc_error |
205 | jb sfc_error |
206 | cmp eax,[LAST_CLUSTER] |
206 | cmp eax,[LAST_CLUSTER] |
207 | ja sfc_error |
207 | ja sfc_error |
208 | cmp [fs_type],16 |
208 | cmp [fs_type],16 |
209 | je sfc_1 |
209 | je sfc_1 |
210 | add eax,eax |
210 | add eax,eax |
211 | sfc_1: |
211 | sfc_1: |
212 | add eax,eax |
212 | add eax,eax |
213 | mov esi,511 |
213 | mov esi,511 |
214 | and esi,eax ; esi = position in fat sector |
214 | and esi,eax ; esi = position in fat sector |
215 | shr eax,9 ; eax = fat sector |
215 | shr eax,9 ; eax = fat sector |
216 | add eax,[FAT_START] |
216 | add eax,[FAT_START] |
217 | mov ebx,fat_cache |
217 | mov ebx,fat_cache |
218 | 218 | ||
219 | cmp eax,[fat_in_cache] ; is fat sector already in memory? |
219 | cmp eax,[fat_in_cache] ; is fat sector already in memory? |
220 | je sfc_in_cache ; yes |
220 | je sfc_in_cache ; yes |
221 | 221 | ||
222 | cmp [fat_change],0 ; is fat changed? |
222 | cmp [fat_change],0 ; is fat changed? |
223 | je sfc_no_change ; no |
223 | je sfc_no_change ; no |
224 | call write_fat_sector ; yes. write it into disk |
224 | call write_fat_sector ; yes. write it into disk |
225 | cmp [hd_error],0 |
225 | cmp [hd_error],0 |
226 | jne sfc_error |
226 | jne sfc_error |
227 | 227 | ||
228 | sfc_no_change: |
228 | sfc_no_change: |
229 | mov [fat_in_cache],eax ; save fat sector |
229 | mov [fat_in_cache],eax ; save fat sector |
230 | call hd_read |
230 | call hd_read |
231 | cmp [hd_error],0 |
231 | cmp [hd_error],0 |
232 | jne sfc_error |
232 | jne sfc_error |
233 | 233 | ||
234 | 234 | ||
235 | sfc_in_cache: |
235 | sfc_in_cache: |
236 | cmp [fs_type],16 |
236 | cmp [fs_type],16 |
237 | jne sfc_test32 |
237 | jne sfc_test32 |
238 | 238 | ||
239 | sfc_set16: |
239 | sfc_set16: |
240 | xchg [ebx+esi],dx ; save new value and get old value |
240 | xchg [ebx+esi],dx ; save new value and get old value |
241 | jmp sfc_write |
241 | jmp sfc_write |
242 | 242 | ||
243 | sfc_test32: |
243 | sfc_test32: |
244 | mov eax,[fatMASK] |
244 | mov eax,[fatMASK] |
245 | 245 | ||
246 | sfc_set32: |
246 | sfc_set32: |
247 | and edx,eax |
247 | and edx,eax |
248 | xor eax,-1 ; mask for high bits |
248 | xor eax,-1 ; mask for high bits |
249 | and eax,[ebx+esi] ; get high 4 bits |
249 | and eax,[ebx+esi] ; get high 4 bits |
250 | or eax,edx |
250 | or eax,edx |
251 | mov edx,[ebx+esi] ; get old value |
251 | mov edx,[ebx+esi] ; get old value |
252 | mov [ebx+esi],eax ; save new value |
252 | mov [ebx+esi],eax ; save new value |
253 | 253 | ||
254 | sfc_write: |
254 | sfc_write: |
255 | mov [fat_change],1 ; fat has changed |
255 | mov [fat_change],1 ; fat has changed |
256 | 256 | ||
257 | sfc_nonzero: |
257 | sfc_nonzero: |
258 | and edx,[fatMASK] |
258 | and edx,[fatMASK] |
259 | 259 | ||
260 | sfc_error: |
260 | sfc_error: |
261 | pop esi ebx eax |
261 | pop esi ebx eax |
262 | ret |
262 | ret |
263 | 263 | ||
264 | 264 | ||
265 | get_FAT: |
265 | get_FAT: |
266 | ;-------------------------------- |
266 | ;-------------------------------- |
267 | ; input : EAX = cluster |
267 | ; input : EAX = cluster |
268 | ; output : EAX = next cluster |
268 | ; output : EAX = next cluster |
269 | ;-------------------------------- |
269 | ;-------------------------------- |
270 | push ebx esi |
270 | push ebx esi |
271 | 271 | ||
272 | cmp [fs_type],16 |
272 | cmp [fs_type],16 |
273 | je gfc_1 |
273 | je gfc_1 |
274 | add eax,eax |
274 | add eax,eax |
275 | gfc_1: |
275 | gfc_1: |
276 | add eax,eax |
276 | add eax,eax |
277 | mov esi,511 |
277 | mov esi,511 |
278 | and esi,eax ; esi = position in fat sector |
278 | and esi,eax ; esi = position in fat sector |
279 | shr eax,9 ; eax = fat sector |
279 | shr eax,9 ; eax = fat sector |
280 | add eax,[FAT_START] |
280 | add eax,[FAT_START] |
281 | mov ebx,fat_cache |
281 | mov ebx,fat_cache |
282 | 282 | ||
283 | cmp eax,[fat_in_cache] ; is fat sector already in memory? |
283 | cmp eax,[fat_in_cache] ; is fat sector already in memory? |
284 | je gfc_in_cache |
284 | je gfc_in_cache |
285 | 285 | ||
286 | cmp [fat_change],0 ; is fat changed? |
286 | cmp [fat_change],0 ; is fat changed? |
287 | je gfc_no_change ; no |
287 | je gfc_no_change ; no |
288 | call write_fat_sector ; yes. write it into disk |
288 | call write_fat_sector ; yes. write it into disk |
289 | cmp [hd_error],0 |
289 | cmp [hd_error],0 |
290 | jne hd_error_01 |
290 | jne hd_error_01 |
291 | 291 | ||
292 | gfc_no_change: |
292 | gfc_no_change: |
293 | mov [fat_in_cache],eax |
293 | mov [fat_in_cache],eax |
294 | call hd_read |
294 | call hd_read |
295 | cmp [hd_error],0 |
295 | cmp [hd_error],0 |
296 | jne hd_error_01 |
296 | jne hd_error_01 |
297 | 297 | ||
298 | gfc_in_cache: |
298 | gfc_in_cache: |
299 | mov eax,[ebx+esi] |
299 | mov eax,[ebx+esi] |
300 | and eax,[fatMASK] |
300 | and eax,[fatMASK] |
301 | hd_error_01: |
301 | hd_error_01: |
302 | pop esi ebx |
302 | pop esi ebx |
303 | ret |
303 | ret |
304 | 304 | ||
305 | 305 | ||
306 | get_free_FAT: |
306 | get_free_FAT: |
307 | ;----------------------------------------------------------- |
307 | ;----------------------------------------------------------- |
308 | ; output : if CARRY=0 EAX = # first cluster found free |
308 | ; output : if CARRY=0 EAX = # first cluster found free |
309 | ; if CARRY=1 disk full |
309 | ; if CARRY=1 disk full |
310 | ; Note : for more speed need to use fat_cache directly |
310 | ; Note : for more speed need to use fat_cache directly |
311 | ;----------------------------------------------------------- |
311 | ;----------------------------------------------------------- |
312 | push ecx |
312 | push ecx |
313 | mov ecx,[LAST_CLUSTER] ; counter for full disk |
313 | mov ecx,[LAST_CLUSTER] ; counter for full disk |
314 | sub ecx,2 |
314 | sub ecx,2 |
315 | mov eax,[fatStartScan] |
315 | mov eax,[fatStartScan] |
316 | cmp eax,2 |
316 | cmp eax,2 |
317 | jb gff_reset |
317 | jb gff_reset |
318 | 318 | ||
319 | gff_test: |
319 | gff_test: |
320 | cmp eax,[LAST_CLUSTER] ; if above last cluster start at cluster 2 |
320 | cmp eax,[LAST_CLUSTER] ; if above last cluster start at cluster 2 |
321 | jbe gff_in_range |
321 | jbe gff_in_range |
322 | gff_reset: |
322 | gff_reset: |
323 | mov eax,2 |
323 | mov eax,2 |
324 | 324 | ||
325 | gff_in_range: |
325 | gff_in_range: |
326 | push eax |
326 | push eax |
327 | call get_FAT ; get cluster state |
327 | call get_FAT ; get cluster state |
328 | cmp [hd_error],0 |
328 | cmp [hd_error],0 |
329 | jne gff_not_found_1 |
329 | jne gff_not_found_1 |
330 | 330 | ||
331 | test eax,eax ; is it free? |
331 | test eax,eax ; is it free? |
332 | pop eax |
332 | pop eax |
333 | je gff_found ; yes |
333 | je gff_found ; yes |
334 | inc eax ; next cluster |
334 | inc eax ; next cluster |
335 | dec ecx ; is all checked? |
335 | dec ecx ; is all checked? |
336 | jns gff_test ; no |
336 | jns gff_test ; no |
337 | 337 | ||
338 | gff_not_found_1: |
338 | gff_not_found_1: |
339 | add esp,4 |
339 | add esp,4 |
340 | gff_not_found: |
340 | gff_not_found: |
341 | pop ecx ; yes. disk is full |
341 | pop ecx ; yes. disk is full |
342 | stc |
342 | stc |
343 | ret |
343 | ret |
344 | 344 | ||
345 | gff_found: |
345 | gff_found: |
346 | lea ecx,[eax+1] |
346 | lea ecx,[eax+1] |
347 | mov [fatStartScan],ecx |
347 | mov [fatStartScan],ecx |
348 | pop ecx |
348 | pop ecx |
349 | clc |
349 | clc |
350 | ret |
350 | ret |
351 | 351 | ||
352 | 352 | ||
353 | write_fat_sector: |
353 | write_fat_sector: |
354 | ;----------------------------------------------------------- |
354 | ;----------------------------------------------------------- |
355 | ; write changed fat to disk |
355 | ; write changed fat to disk |
356 | ;----------------------------------------------------------- |
356 | ;----------------------------------------------------------- |
357 | push eax ebx ecx |
357 | push eax ebx ecx |
358 | 358 | ||
359 | mov [fat_change],0 |
359 | mov [fat_change],0 |
360 | mov eax,[fat_in_cache] |
360 | mov eax,[fat_in_cache] |
361 | cmp eax,-1 |
361 | cmp eax,-1 |
362 | jz write_fat_not_used |
362 | jz write_fat_not_used |
363 | mov ebx,fat_cache |
363 | mov ebx,fat_cache |
364 | mov ecx,[NUMBER_OF_FATS] |
364 | mov ecx,[NUMBER_OF_FATS] |
365 | 365 | ||
366 | write_next_fat: |
366 | write_next_fat: |
367 | call hd_write |
367 | call hd_write |
368 | cmp [hd_error],0 |
368 | cmp [hd_error],0 |
369 | jne write_fat_not_used |
369 | jne write_fat_not_used |
370 | 370 | ||
371 | add eax,[SECTORS_PER_FAT] |
371 | add eax,[SECTORS_PER_FAT] |
372 | dec ecx |
372 | dec ecx |
373 | jnz write_next_fat |
373 | jnz write_next_fat |
374 | 374 | ||
375 | write_fat_not_used: |
375 | write_fat_not_used: |
376 | pop ecx ebx eax |
376 | pop ecx ebx eax |
377 | ret |
377 | ret |
378 | 378 | ||
379 | 379 | ||
380 | analyze_directory: |
380 | analyze_directory: |
381 | ;----------------------------------------------------------- |
381 | ;----------------------------------------------------------- |
382 | ; input : EAX = first cluster of the directory |
382 | ; input : EAX = first cluster of the directory |
383 | ; EBX = pointer to filename |
383 | ; EBX = pointer to filename |
384 | ; output : IF CARRY=0 EAX = sector where th file is found |
384 | ; output : IF CARRY=0 EAX = sector where th file is found |
385 | ; EBX = pointer in buffer |
385 | ; EBX = pointer in buffer |
386 | ; [buffer .. buffer+511] |
386 | ; [buffer .. buffer+511] |
387 | ; ECX,EDX,ESI,EDI not changed |
387 | ; ECX,EDX,ESI,EDI not changed |
388 | ; IF CARRY=1 filename not found |
388 | ; IF CARRY=1 filename not found |
389 | ; Note : if cluster=0 it's changed to read rootdir |
389 | ; Note : if cluster=0 it's changed to read rootdir |
390 | ; save 2 previous directory sectors in longname_sec |
390 | ; save 2 previous directory sectors in longname_sec |
391 | ;----------------------------------------------------------- |
391 | ;----------------------------------------------------------- |
392 | push ecx edx esi edi ebx ; ebx = [esp+0] |
392 | push ecx edx esi edi ebx ; ebx = [esp+0] |
393 | mov [longname_sec1],0 |
393 | mov [longname_sec1],0 |
394 | mov [longname_sec2],0 |
394 | mov [longname_sec2],0 |
395 | 395 | ||
396 | adr_new_cluster: |
396 | adr_new_cluster: |
397 | mov [cluster_tmp],eax |
397 | mov [cluster_tmp],eax |
398 | mov [fat16_root],0 |
398 | mov [fat16_root],0 |
399 | cmp eax,[LAST_CLUSTER] |
399 | cmp eax,[LAST_CLUSTER] |
400 | ja adr_not_found ; too big cluster number, something is wrong |
400 | ja adr_not_found ; too big cluster number, something is wrong |
401 | cmp eax,2 |
401 | cmp eax,2 |
402 | jnb adr_data_cluster |
402 | jnb adr_data_cluster |
403 | 403 | ||
404 | mov eax,[ROOT_CLUSTER] ; if cluster < 2 then read rootdir |
404 | mov eax,[ROOT_CLUSTER] ; if cluster < 2 then read rootdir |
405 | cmp [fs_type],16 |
405 | cmp [fs_type],16 |
406 | jne adr_data_cluster |
406 | jne adr_data_cluster |
407 | mov eax,[ROOT_START] |
407 | mov eax,[ROOT_START] |
408 | mov edx,[ROOT_SECTORS] |
408 | mov edx,[ROOT_SECTORS] |
409 | mov [fat16_root],1 ; flag for fat16 rootdir |
409 | mov [fat16_root],1 ; flag for fat16 rootdir |
410 | jmp adr_new_sector |
410 | jmp adr_new_sector |
411 | 411 | ||
412 | adr_data_cluster: |
412 | adr_data_cluster: |
413 | sub eax,2 |
413 | sub eax,2 |
414 | mov edx,[SECTORS_PER_CLUSTER] |
414 | mov edx,[SECTORS_PER_CLUSTER] |
415 | imul eax,edx |
415 | imul eax,edx |
416 | add eax,[DATA_START] |
416 | add eax,[DATA_START] |
417 | 417 | ||
418 | adr_new_sector: |
418 | adr_new_sector: |
419 | mov ebx,buffer |
419 | mov ebx,buffer |
420 | call hd_read |
420 | call hd_read |
421 | cmp [hd_error],0 |
421 | cmp [hd_error],0 |
422 | jne adr_not_found |
422 | jne adr_not_found |
423 | 423 | ||
424 | mov ecx,512/32 ; count of dir entrys per sector = 16 |
424 | mov ecx,512/32 ; count of dir entrys per sector = 16 |
425 | 425 | ||
426 | adr_analyze: |
426 | adr_analyze: |
427 | mov edi,[ebx+11] ; file attribute |
427 | mov edi,[ebx+11] ; file attribute |
428 | and edi,0xf |
428 | and edi,0xf |
429 | cmp edi,0xf |
429 | cmp edi,0xf |
430 | je adr_long_filename |
430 | je adr_long_filename |
431 | test edi,0x8 ; skip over volume label |
431 | test edi,0x8 ; skip over volume label |
432 | jne adr_long_filename ; Note: label can be same name as file/dir |
432 | jne adr_long_filename ; Note: label can be same name as file/dir |
433 | 433 | ||
434 | mov esi,[esp+0] ; filename need to be uppercase |
434 | mov esi,[esp+0] ; filename need to be uppercase |
435 | mov edi,ebx |
435 | mov edi,ebx |
436 | push ecx |
436 | push ecx |
437 | mov ecx,11 |
437 | mov ecx,11 |
438 | cld |
438 | cld |
439 | rep cmpsb ; compare 8+3 filename |
439 | rep cmpsb ; compare 8+3 filename |
440 | pop ecx |
440 | pop ecx |
441 | je adr_found |
441 | je adr_found |
442 | 442 | ||
443 | adr_long_filename: |
443 | adr_long_filename: |
444 | add ebx,32 ; position of next dir entry |
444 | add ebx,32 ; position of next dir entry |
445 | dec ecx |
445 | dec ecx |
446 | jnz adr_analyze |
446 | jnz adr_analyze |
447 | 447 | ||
448 | mov ecx,[longname_sec1] ; save 2 previous directory sectors |
448 | mov ecx,[longname_sec1] ; save 2 previous directory sectors |
449 | mov [longname_sec1],eax ; for delete long filename |
449 | mov [longname_sec1],eax ; for delete long filename |
450 | mov [longname_sec2],ecx |
450 | mov [longname_sec2],ecx |
451 | inc eax ; next sector |
451 | inc eax ; next sector |
452 | dec edx |
452 | dec edx |
453 | jne adr_new_sector |
453 | jne adr_new_sector |
454 | cmp [fat16_root],1 ; end of fat16 rootdir |
454 | cmp [fat16_root],1 ; end of fat16 rootdir |
455 | je adr_not_found |
455 | je adr_not_found |
456 | 456 | ||
457 | adr_next_cluster: |
457 | adr_next_cluster: |
458 | mov eax,[cluster_tmp] |
458 | mov eax,[cluster_tmp] |
459 | call get_FAT ; get next cluster |
459 | call get_FAT ; get next cluster |
460 | cmp [hd_error],0 |
460 | cmp [hd_error],0 |
461 | jne adr_not_found |
461 | jne adr_not_found |
462 | 462 | ||
463 | cmp eax,2 ; incorrect fat chain? |
463 | cmp eax,2 ; incorrect fat chain? |
464 | jb adr_not_found ; yes |
464 | jb adr_not_found ; yes |
465 | cmp eax,[fatRESERVED] ; is it end of directory? |
465 | cmp eax,[fatRESERVED] ; is it end of directory? |
466 | jb adr_new_cluster ; no. analyse it |
466 | jb adr_new_cluster ; no. analyse it |
467 | 467 | ||
468 | adr_not_found: |
468 | adr_not_found: |
469 | pop edi edi esi edx ecx ; first edi will remove ebx |
469 | pop edi edi esi edx ecx ; first edi will remove ebx |
470 | stc ; file not found |
470 | stc ; file not found |
471 | ret |
471 | ret |
472 | 472 | ||
473 | adr_found: |
473 | adr_found: |
474 | pop edi edi esi edx ecx ; first edi will remove ebx |
474 | pop edi edi esi edx ecx ; first edi will remove ebx |
475 | clc ; file found |
475 | clc ; file found |
476 | ret |
476 | ret |
477 | 477 | ||
478 | 478 | ||
479 | get_data_cluster: |
479 | get_data_cluster: |
480 | ;----------------------------------------------------------- |
480 | ;----------------------------------------------------------- |
481 | ; input : EAX = cluster |
481 | ; input : EAX = cluster |
482 | ; EBX = pointer to buffer |
482 | ; EBX = pointer to buffer |
483 | ; EDX = # blocks to read in buffer |
483 | ; EDX = # blocks to read in buffer |
484 | ; ESI = # blocks to skip over |
484 | ; ESI = # blocks to skip over |
485 | ; output : if CARRY=0 ok EBX/EDX/ESI updated |
485 | ; output : if CARRY=0 ok EBX/EDX/ESI updated |
486 | ; if CARRY=1 cluster out of range |
486 | ; if CARRY=1 cluster out of range |
487 | ; Note : if cluster=0 it's changed to read rootdir |
487 | ; Note : if cluster=0 it's changed to read rootdir |
488 | ;----------------------------------------------------------- |
488 | ;----------------------------------------------------------- |
489 | push eax ecx |
489 | push eax ecx |
490 | 490 | ||
491 | mov [fat16_root],0 |
491 | mov [fat16_root],0 |
492 | cmp eax,[LAST_CLUSTER] |
492 | cmp eax,[LAST_CLUSTER] |
493 | ja gdc_error ; too big cluster number, something is wrong |
493 | ja gdc_error ; too big cluster number, something is wrong |
494 | cmp eax,2 |
494 | cmp eax,2 |
495 | jnb gdc_cluster |
495 | jnb gdc_cluster |
496 | 496 | ||
497 | mov eax,[ROOT_CLUSTER] ; if cluster < 2 then read rootdir |
497 | mov eax,[ROOT_CLUSTER] ; if cluster < 2 then read rootdir |
498 | cmp [fs_type],16 |
498 | cmp [fs_type],16 |
499 | jne gdc_cluster |
499 | jne gdc_cluster |
500 | mov eax,[ROOT_START] |
500 | mov eax,[ROOT_START] |
501 | mov ecx,[ROOT_SECTORS] ; Note: not cluster size |
501 | mov ecx,[ROOT_SECTORS] ; Note: not cluster size |
502 | mov [fat16_root],1 ; flag for fat16 rootdir |
502 | mov [fat16_root],1 ; flag for fat16 rootdir |
503 | jmp gdc_read |
503 | jmp gdc_read |
504 | 504 | ||
505 | gdc_cluster: |
505 | gdc_cluster: |
506 | sub eax,2 |
506 | sub eax,2 |
507 | mov ecx,[SECTORS_PER_CLUSTER] |
507 | mov ecx,[SECTORS_PER_CLUSTER] |
508 | imul eax,ecx |
508 | imul eax,ecx |
509 | add eax,[DATA_START] |
509 | add eax,[DATA_START] |
510 | 510 | ||
511 | gdc_read: |
511 | gdc_read: |
512 | test esi,esi ; first wanted block |
512 | test esi,esi ; first wanted block |
513 | je gdcl1 ; yes, skip count is 0 |
513 | je gdcl1 ; yes, skip count is 0 |
514 | dec esi |
514 | dec esi |
515 | jmp gdcl2 |
515 | jmp gdcl2 |
516 | 516 | ||
517 | gdcl1: |
517 | gdcl1: |
518 | call hd_read |
518 | call hd_read |
519 | cmp [hd_error],0 |
519 | cmp [hd_error],0 |
520 | jne gdc_error |
520 | jne gdc_error |
521 | 521 | ||
522 | add ebx,512 ; update pointer |
522 | add ebx,512 ; update pointer |
523 | dec edx |
523 | dec edx |
524 | 524 | ||
525 | gdcl2: |
525 | gdcl2: |
526 | test edx,edx ; is all read? |
526 | test edx,edx ; is all read? |
527 | je out_of_read |
527 | je out_of_read |
528 | 528 | ||
529 | inc eax ; next sector |
529 | inc eax ; next sector |
530 | dec ecx |
530 | dec ecx |
531 | jnz gdc_read |
531 | jnz gdc_read |
532 | 532 | ||
533 | out_of_read: |
533 | out_of_read: |
534 | pop ecx eax |
534 | pop ecx eax |
535 | clc |
535 | clc |
536 | ret |
536 | ret |
537 | 537 | ||
538 | gdc_error: |
538 | gdc_error: |
539 | pop ecx eax |
539 | pop ecx eax |
540 | stc |
540 | stc |
541 | ret |
541 | ret |
542 | 542 | ||
543 | 543 | ||
544 | get_cluster_of_a_path: |
544 | get_cluster_of_a_path: |
545 | ;--------------------------------------------------------- |
545 | ;--------------------------------------------------------- |
546 | ; input : EBX = pointer to a path string |
546 | ; input : EBX = pointer to a path string |
547 | ; (example: the path "/files/data/document" become |
547 | ; (example: the path "/files/data/document" become |
548 | ; "files......data.......document...0" |
548 | ; "files......data.......document...0" |
549 | ; '.' = space char |
549 | ; '.' = space char |
550 | ; '0' = char(0) (ASCII=0) !!! ) |
550 | ; '0' = char(0) (ASCII=0) !!! ) |
551 | ; output : if (CARRY=1) -> ERROR in the PATH |
551 | ; output : if (CARRY=1) -> ERROR in the PATH |
552 | ; if (CARRY=0) -> EAX=cluster |
552 | ; if (CARRY=0) -> EAX=cluster |
553 | ;--------------------------------------------------------- |
553 | ;--------------------------------------------------------- |
554 | push ebx edx |
554 | push ebx edx |
555 | 555 | ||
556 | mov eax,[ROOT_CLUSTER] |
556 | mov eax,[ROOT_CLUSTER] |
557 | mov edx,ebx |
557 | mov edx,ebx |
558 | 558 | ||
559 | search_end_of_path: |
559 | search_end_of_path: |
560 | cmp byte [edx],0 |
560 | cmp byte [edx],0 |
561 | je found_end_of_path |
561 | je found_end_of_path |
562 | 562 | ||
563 | inc edx ; '/' |
563 | inc edx ; '/' |
564 | mov ebx,edx |
564 | mov ebx,edx |
565 | call analyze_directory |
565 | call analyze_directory |
566 | jc directory_not_found |
566 | jc directory_not_found |
567 | 567 | ||
568 | mov eax,[ebx+20-2] ; read the HIGH 16bit cluster field |
568 | mov eax,[ebx+20-2] ; read the HIGH 16bit cluster field |
569 | mov ax,[ebx+26] ; read the LOW 16bit cluster field |
569 | mov ax,[ebx+26] ; read the LOW 16bit cluster field |
570 | and eax,[fatMASK] |
570 | and eax,[fatMASK] |
571 | add edx,11 ; 8+3 (name+extension) |
571 | add edx,11 ; 8+3 (name+extension) |
572 | jmp search_end_of_path |
572 | jmp search_end_of_path |
573 | 573 | ||
574 | found_end_of_path: |
574 | found_end_of_path: |
575 | pop edx ebx |
575 | pop edx ebx |
576 | clc ; no errors |
576 | clc ; no errors |
577 | ret |
577 | ret |
578 | 578 | ||
579 | directory_not_found: |
579 | directory_not_found: |
580 | pop edx ebx |
580 | pop edx ebx |
581 | stc ; errors occour |
581 | stc ; errors occour |
582 | ret |
582 | ret |
583 | 583 | ||
584 | 584 | ||
585 | bcd2bin: |
585 | bcd2bin: |
586 | ;---------------------------------- |
586 | ;---------------------------------- |
587 | ; input : AL=BCD number (eg. 0x11) |
587 | ; input : AL=BCD number (eg. 0x11) |
588 | ; output : AH=0 |
588 | ; output : AH=0 |
589 | ; AL=decimal number (eg. 11) |
589 | ; AL=decimal number (eg. 11) |
590 | ;---------------------------------- |
590 | ;---------------------------------- |
591 | xor ah,ah |
591 | xor ah,ah |
592 | shl ax,4 |
592 | shl ax,4 |
593 | shr al,4 |
593 | shr al,4 |
594 | aad |
594 | aad |
595 | ret |
595 | ret |
596 | 596 | ||
597 | 597 | ||
598 | get_date_for_file: |
598 | get_date_for_file: |
599 | ;----------------------------------------------------- |
599 | ;----------------------------------------------------- |
600 | ; Get date from CMOS and pack day,month,year in AX |
600 | ; Get date from CMOS and pack day,month,year in AX |
601 | ; DATE bits 0..4 : day of month 0..31 |
601 | ; DATE bits 0..4 : day of month 0..31 |
602 | ; 5..8 : month of year 1..12 |
602 | ; 5..8 : month of year 1..12 |
603 | ; 9..15 : count of years from 1980 |
603 | ; 9..15 : count of years from 1980 |
604 | ;----------------------------------------------------- |
604 | ;----------------------------------------------------- |
605 | mov al,0x7 ;day |
605 | mov al,0x7 ;day |
606 | out 0x70,al |
606 | out 0x70,al |
607 | in al,0x71 |
607 | in al,0x71 |
608 | call bcd2bin |
608 | call bcd2bin |
609 | ror eax,5 |
609 | ror eax,5 |
610 | 610 | ||
611 | mov al,0x8 ;month |
611 | mov al,0x8 ;month |
612 | out 0x70,al |
612 | out 0x70,al |
613 | in al,0x71 |
613 | in al,0x71 |
614 | call bcd2bin |
614 | call bcd2bin |
615 | ror eax,4 |
615 | ror eax,4 |
616 | 616 | ||
617 | mov al,0x9 ;year |
617 | mov al,0x9 ;year |
618 | out 0x70,al |
618 | out 0x70,al |
619 | in al,0x71 |
619 | in al,0x71 |
620 | call bcd2bin |
620 | call bcd2bin |
621 | add ax,20 ;because CMOS return only the two last |
621 | add ax,20 ;because CMOS return only the two last |
622 | ;digit (eg. 2000 -> 00 , 2001 -> 01) and we |
622 | ;digit (eg. 2000 -> 00 , 2001 -> 01) and we |
623 | rol eax,9 ;need the difference with 1980 (eg. 2001-1980) |
623 | rol eax,9 ;need the difference with 1980 (eg. 2001-1980) |
624 | ret |
624 | ret |
625 | 625 | ||
626 | 626 | ||
627 | get_time_for_file: |
627 | get_time_for_file: |
628 | ;----------------------------------------------------- |
628 | ;----------------------------------------------------- |
629 | ; Get time from CMOS and pack hour,minute,second in AX |
629 | ; Get time from CMOS and pack hour,minute,second in AX |
630 | ; TIME bits 0..4 : second (the low bit is lost) |
630 | ; TIME bits 0..4 : second (the low bit is lost) |
631 | ; 5..10 : minute 0..59 |
631 | ; 5..10 : minute 0..59 |
632 | ; 11..15 : hour 0..23 |
632 | ; 11..15 : hour 0..23 |
633 | ;----------------------------------------------------- |
633 | ;----------------------------------------------------- |
634 | mov al,0x0 ;second |
634 | mov al,0x0 ;second |
635 | out 0x70,al |
635 | out 0x70,al |
636 | in al,0x71 |
636 | in al,0x71 |
637 | call bcd2bin |
637 | call bcd2bin |
638 | ror eax,6 |
638 | ror eax,6 |
639 | 639 | ||
640 | mov al,0x2 ;minute |
640 | mov al,0x2 ;minute |
641 | out 0x70,al |
641 | out 0x70,al |
642 | in al,0x71 |
642 | in al,0x71 |
643 | call bcd2bin |
643 | call bcd2bin |
644 | ror eax,6 |
644 | ror eax,6 |
645 | 645 | ||
646 | mov al,0x4 ;hour |
646 | mov al,0x4 ;hour |
647 | out 0x70,al |
647 | out 0x70,al |
648 | in al,0x71 |
648 | in al,0x71 |
649 | call bcd2bin |
649 | call bcd2bin |
650 | rol eax,11 |
650 | rol eax,11 |
651 | ret |
651 | ret |
652 | 652 | ||
653 | 653 | ||
654 | set_current_time_for_entry: |
654 | set_current_time_for_entry: |
655 | ;----------------------------------------------------- |
655 | ;----------------------------------------------------- |
656 | ; Set current time/date for file entry |
656 | ; Set current time/date for file entry |
657 | ; input : ebx = file entry pointer |
657 | ; input : ebx = file entry pointer |
658 | ;----------------------------------------------------- |
658 | ;----------------------------------------------------- |
659 | push eax |
659 | push eax |
660 | call get_time_for_file ; update files date/time |
660 | call get_time_for_file ; update files date/time |
661 | mov [ebx+22],ax |
661 | mov [ebx+22],ax |
662 | call get_date_for_file |
662 | call get_date_for_file |
663 | mov [ebx+24],ax |
663 | mov [ebx+24],ax |
664 | pop eax |
664 | pop eax |
665 | ret |
665 | ret |
666 | 666 | ||
667 | 667 | ||
668 | 668 | ||
669 | add_disk_free_space: |
669 | add_disk_free_space: |
670 | ;----------------------------------------------------- |
670 | ;----------------------------------------------------- |
671 | ; input : ecx = cluster count |
671 | ; input : ecx = cluster count |
672 | ; Note : negative = remove clusters from free space |
672 | ; Note : negative = remove clusters from free space |
673 | ; positive = add clusters to free space |
673 | ; positive = add clusters to free space |
674 | ;----------------------------------------------------- |
674 | ;----------------------------------------------------- |
675 | test ecx,ecx ; no change |
675 | test ecx,ecx ; no change |
676 | je add_dfs_no |
676 | je add_dfs_no |
677 | cmp [fs_type],32 ; free disk space only used by fat32 |
677 | cmp [fs_type],32 ; free disk space only used by fat32 |
678 | jne add_dfs_no |
678 | jne add_dfs_no |
679 | 679 | ||
680 | push eax ebx |
680 | push eax ebx |
681 | mov eax,[ADR_FSINFO] |
681 | mov eax,[ADR_FSINFO] |
682 | mov ebx,fsinfo_buffer |
682 | mov ebx,fsinfo_buffer |
683 | call hd_read |
683 | call hd_read |
684 | cmp [hd_error],0 |
684 | cmp [hd_error],0 |
685 | jne add_not_fs |
685 | jne add_not_fs |
686 | 686 | ||
687 | cmp dword [ebx+0x1fc],0xaa550000 ; check sector id |
687 | cmp dword [ebx+0x1fc],0xaa550000 ; check sector id |
688 | jne add_not_fs |
688 | jne add_not_fs |
689 | 689 | ||
690 | add [ebx+0x1e8],ecx |
690 | add [ebx+0x1e8],ecx |
691 | push [fatStartScan] |
691 | push [fatStartScan] |
692 | pop dword [ebx+0x1ec] |
692 | pop dword [ebx+0x1ec] |
693 | call hd_write |
693 | call hd_write |
694 | ; cmp [hd_error],0 |
694 | ; cmp [hd_error],0 |
695 | ; jne add_not_fs |
695 | ; jne add_not_fs |
696 | 696 | ||
697 | add_not_fs: |
697 | add_not_fs: |
698 | pop ebx eax |
698 | pop ebx eax |
699 | 699 | ||
700 | add_dfs_no: |
700 | add_dfs_no: |
701 | ret |
701 | ret |
702 | 702 | ||
703 | 703 | ||
704 | file_read: |
704 | file_read: |
705 | ;-------------------------------------------------------------------------- |
705 | ;-------------------------------------------------------------------------- |
706 | ; INPUT : user-register register-in-this meaning symbol-in-this |
706 | ; INPUT : user-register register-in-this meaning symbol-in-this |
707 | ; |
707 | ; |
708 | ; EAX EDI system call to write / |
708 | ; EAX EDI system call to write / |
709 | ; EBX EAX (PAR0) pointer to file-name PAR0 |
709 | ; EBX EAX (PAR0) pointer to file-name PAR0 |
710 | ; EDX ECX (PAR1) pointer to buffer PAR1 |
710 | ; EDX ECX (PAR1) pointer to buffer PAR1 |
711 | ; ECX EBX (PAR2) vt file blocks to read PAR2 |
711 | ; ECX EBX (PAR2) vt file blocks to read PAR2 |
712 | ; ESI EDX (PAR3) pointer to path PAR3 |
712 | ; ESI EDX (PAR3) pointer to path PAR3 |
713 | ; EDI ESI vt first 512 block to read |
713 | ; EDI ESI vt first 512 block to read |
714 | ; EDI if 0 - read root |
714 | ; EDI if 0 - read root |
715 | ; |
715 | ; |
716 | ; output : eax = 0 - ok |
716 | ; output : eax = 0 - ok |
717 | ; 3 - unknown FS |
717 | ; 3 - unknown FS |
718 | ; 5 - file not found |
718 | ; 5 - file not found |
719 | ; 6 - end of file |
719 | ; 6 - end of file |
720 | ; 9 - fat table corrupted |
720 | ; 9 - fat table corrupted |
721 | ; 10 - access denied |
721 | ; 10 - access denied |
722 | ; ebx = size of file/directory |
722 | ; ebx = size of file/directory |
723 | ;-------------------------------------------------------------------------- |
723 | ;-------------------------------------------------------------------------- |
724 | cmp [fs_type], 16 |
724 | cmp [fs_type], 16 |
725 | jz fat_ok_for_reading |
725 | jz fat_ok_for_reading |
726 | cmp [fs_type], 32 |
726 | cmp [fs_type], 32 |
727 | jz fat_ok_for_reading |
727 | jz fat_ok_for_reading |
728 | xor ebx,ebx |
728 | xor ebx,ebx |
729 | mov eax,ERROR_UNKNOWN_FS |
729 | mov eax,ERROR_UNKNOWN_FS |
730 | mov [hd1_status], ebx |
730 | mov [hd1_status], ebx |
731 | ret |
731 | ret |
732 | 732 | ||
733 | fat_ok_for_reading: |
733 | fat_ok_for_reading: |
734 | ; call reserve_hd1 |
734 | ; call reserve_hd1 |
735 | 735 | ||
736 | pushad |
736 | pushad |
737 | 737 | ||
738 | mov ebx,edx |
738 | mov ebx,edx |
739 | call get_cluster_of_a_path |
739 | call get_cluster_of_a_path |
740 | jc file_to_read_not_found |
740 | jc file_to_read_not_found |
741 | 741 | ||
742 | test edi,edi ; read rootdir |
742 | test edi,edi ; read rootdir |
743 | jne no_read_root |
743 | jne no_read_root |
744 | 744 | ||
745 | xor eax,eax |
745 | xor eax,eax |
746 | call get_dir_size ; return rootdir size |
746 | call get_dir_size ; return rootdir size |
747 | cmp [hd_error],0 |
747 | cmp [hd_error],0 |
748 | jne file_access_denied |
748 | jne file_access_denied |
749 | 749 | ||
750 | mov [file_size],eax |
750 | mov [file_size],eax |
751 | mov eax,[ROOT_CLUSTER] |
751 | mov eax,[ROOT_CLUSTER] |
752 | jmp file_read_start |
752 | jmp file_read_start |
753 | 753 | ||
754 | no_read_root: |
754 | no_read_root: |
755 | mov ebx,PUSHAD_EAX ; file name |
755 | mov ebx,PUSHAD_EAX ; file name |
756 | call analyze_directory |
756 | call analyze_directory |
757 | jc file_to_read_not_found |
757 | jc file_to_read_not_found |
758 | 758 | ||
759 | mov eax,[ebx+28] ; file size |
759 | mov eax,[ebx+28] ; file size |
760 | test byte [ebx+11],0x10 ; is it directory? |
760 | test byte [ebx+11],0x10 ; is it directory? |
761 | jz read_set_size ; no |
761 | jz read_set_size ; no |
762 | 762 | ||
763 | mov eax,[ebx+20-2] ; FAT entry |
763 | mov eax,[ebx+20-2] ; FAT entry |
764 | mov ax,[ebx+26] |
764 | mov ax,[ebx+26] |
765 | and eax,[fatMASK] |
765 | and eax,[fatMASK] |
766 | call get_dir_size |
766 | call get_dir_size |
767 | cmp [hd_error],0 |
767 | cmp [hd_error],0 |
768 | jne file_access_denied |
768 | jne file_access_denied |
769 | 769 | ||
770 | read_set_size: |
770 | read_set_size: |
771 | mov [file_size],eax |
771 | mov [file_size],eax |
772 | 772 | ||
773 | mov eax,[ebx+20-2] ; FAT entry |
773 | mov eax,[ebx+20-2] ; FAT entry |
774 | mov ax,[ebx+26] |
774 | mov ax,[ebx+26] |
775 | and eax,[fatMASK] |
775 | and eax,[fatMASK] |
776 | 776 | ||
777 | file_read_start: |
777 | file_read_start: |
778 | mov ebx,PUSHAD_ECX ; pointer to buffer |
778 | mov ebx,PUSHAD_ECX ; pointer to buffer |
779 | mov edx,PUSHAD_EBX ; file blocks to read |
779 | mov edx,PUSHAD_EBX ; file blocks to read |
780 | mov esi,PUSHAD_ESI ; first 512 block to read |
780 | mov esi,PUSHAD_ESI ; first 512 block to read |
781 | 781 | ||
782 | file_read_new_cluster: |
782 | file_read_new_cluster: |
783 | call get_data_cluster |
783 | call get_data_cluster |
784 | jc file_read_eof ; end of file or cluster out of range |
784 | jc file_read_eof ; end of file or cluster out of range |
785 | 785 | ||
786 | test edx,edx ; is all read? |
786 | test edx,edx ; is all read? |
787 | je file_read_OK ; yes |
787 | je file_read_OK ; yes |
788 | 788 | ||
789 | call get_FAT ; get next cluster |
789 | call get_FAT ; get next cluster |
790 | cmp [hd_error],0 |
790 | cmp [hd_error],0 |
791 | jne file_access_denied |
791 | jne file_access_denied |
792 | 792 | ||
793 | cmp eax,[fatRESERVED] ; end of file |
793 | cmp eax,[fatRESERVED] ; end of file |
794 | jnb file_read_eof |
794 | jnb file_read_eof |
795 | cmp eax,2 ; incorrect fat chain |
795 | cmp eax,2 ; incorrect fat chain |
796 | jnb file_read_new_cluster |
796 | jnb file_read_new_cluster |
797 | 797 | ||
798 | popad |
798 | popad |
799 | mov [hd1_status],0 |
799 | mov [hd1_status],0 |
800 | mov ebx,[file_size] |
800 | mov ebx,[file_size] |
801 | mov eax,ERROR_FAT_TABLE |
801 | mov eax,ERROR_FAT_TABLE |
802 | ret |
802 | ret |
803 | 803 | ||
804 | file_read_eof: |
804 | file_read_eof: |
805 | cmp [hd_error],0 |
805 | cmp [hd_error],0 |
806 | jne file_access_denied |
806 | jne file_access_denied |
807 | popad |
807 | popad |
808 | mov [hd1_status],0 |
808 | mov [hd1_status],0 |
809 | mov ebx,[file_size] |
809 | mov ebx,[file_size] |
810 | mov eax,ERROR_END_OF_FILE |
810 | mov eax,ERROR_END_OF_FILE |
811 | ret |
811 | ret |
812 | 812 | ||
813 | file_read_OK: |
813 | file_read_OK: |
814 | popad |
814 | popad |
815 | mov [hd1_status],0 |
815 | mov [hd1_status],0 |
816 | mov ebx,[file_size] |
816 | mov ebx,[file_size] |
817 | xor eax,eax |
817 | xor eax,eax |
818 | ret |
818 | ret |
819 | 819 | ||
820 | file_to_read_not_found: |
820 | file_to_read_not_found: |
821 | cmp [hd_error],0 |
821 | cmp [hd_error],0 |
822 | jne file_access_denied |
822 | jne file_access_denied |
823 | popad |
823 | popad |
824 | mov [hd1_status],0 |
824 | mov [hd1_status],0 |
825 | xor ebx,ebx |
825 | xor ebx,ebx |
826 | mov eax,ERROR_FILE_NOT_FOUND |
826 | mov eax,ERROR_FILE_NOT_FOUND |
827 | ret |
827 | ret |
828 | 828 | ||
829 | file_access_denied: |
829 | file_access_denied: |
830 | popad |
830 | popad |
831 | mov [hd1_status],0 |
831 | mov [hd1_status],0 |
832 | xor ebx,ebx |
832 | xor ebx,ebx |
833 | mov eax,ERROR_ACCESS_DENIED |
833 | mov eax,ERROR_ACCESS_DENIED |
834 | ret |
834 | ret |
835 | 835 | ||
836 | get_dir_size: |
836 | get_dir_size: |
837 | ;----------------------------------------------------- |
837 | ;----------------------------------------------------- |
838 | ; input : eax = first cluster (0=rootdir) |
838 | ; input : eax = first cluster (0=rootdir) |
839 | ; output : eax = directory size in bytes |
839 | ; output : eax = directory size in bytes |
840 | ;----------------------------------------------------- |
840 | ;----------------------------------------------------- |
841 | push edx |
841 | push edx |
842 | xor edx,edx ; count of directory clusters |
842 | xor edx,edx ; count of directory clusters |
843 | test eax,eax |
843 | test eax,eax |
844 | jnz dir_size_next |
844 | jnz dir_size_next |
845 | 845 | ||
846 | mov eax,[ROOT_SECTORS] |
846 | mov eax,[ROOT_SECTORS] |
847 | shl eax,9 ; fat16 rootdir size in bytes |
847 | shl eax,9 ; fat16 rootdir size in bytes |
848 | cmp [fs_type],16 |
848 | cmp [fs_type],16 |
849 | je dir_size_ret |
849 | je dir_size_ret |
850 | mov eax,[ROOT_CLUSTER] |
850 | mov eax,[ROOT_CLUSTER] |
851 | 851 | ||
852 | dir_size_next: |
852 | dir_size_next: |
853 | cmp eax,2 ; incorrect fat chain |
853 | cmp eax,2 ; incorrect fat chain |
854 | jb dir_size_end |
854 | jb dir_size_end |
855 | cmp eax,[fatRESERVED] ; end of directory |
855 | cmp eax,[fatRESERVED] ; end of directory |
856 | ja dir_size_end |
856 | ja dir_size_end |
857 | call get_FAT ; get next cluster |
857 | call get_FAT ; get next cluster |
858 | cmp [hd_error],0 |
858 | cmp [hd_error],0 |
859 | jne dir_size_ret |
859 | jne dir_size_ret |
860 | 860 | ||
861 | inc edx |
861 | inc edx |
862 | jmp dir_size_next |
862 | jmp dir_size_next |
863 | 863 | ||
864 | dir_size_end: |
864 | dir_size_end: |
865 | imul eax,[SECTORS_PER_CLUSTER],512 ; cluster size in bytes |
865 | imul eax,[SECTORS_PER_CLUSTER],512 ; cluster size in bytes |
866 | imul eax,edx |
866 | imul eax,edx |
867 | 867 | ||
868 | dir_size_ret: |
868 | dir_size_ret: |
869 | pop edx |
869 | pop edx |
870 | ret |
870 | ret |
871 | 871 | ||
872 | 872 | ||
873 | clear_cluster_chain: |
873 | clear_cluster_chain: |
874 | ;----------------------------------------------------- |
874 | ;----------------------------------------------------- |
875 | ; input : eax = first cluster |
875 | ; input : eax = first cluster |
876 | ;----------------------------------------------------- |
876 | ;----------------------------------------------------- |
877 | push eax ecx edx |
877 | push eax ecx edx |
878 | xor ecx,ecx ; cluster count |
878 | xor ecx,ecx ; cluster count |
879 | 879 | ||
880 | clean_new_chain: |
880 | clean_new_chain: |
881 | cmp eax,[LAST_CLUSTER] ; end of file |
881 | cmp eax,[LAST_CLUSTER] ; end of file |
882 | ja delete_OK |
882 | ja delete_OK |
883 | cmp eax,2 ; unfinished fat chain or zero length file |
883 | cmp eax,2 ; unfinished fat chain or zero length file |
884 | jb delete_OK |
884 | jb delete_OK |
885 | cmp eax,[ROOT_CLUSTER] ; don't remove root cluster |
885 | cmp eax,[ROOT_CLUSTER] ; don't remove root cluster |
886 | jz delete_OK |
886 | jz delete_OK |
887 | 887 | ||
888 | xor edx,edx |
888 | xor edx,edx |
889 | call set_FAT ; clear fat entry |
889 | call set_FAT ; clear fat entry |
890 | cmp [hd_error],0 |
890 | cmp [hd_error],0 |
891 | jne access_denied_01 |
891 | jne access_denied_01 |
892 | 892 | ||
893 | inc ecx ; update cluster count |
893 | inc ecx ; update cluster count |
894 | mov eax,edx ; old cluster |
894 | mov eax,edx ; old cluster |
895 | jmp clean_new_chain |
895 | jmp clean_new_chain |
896 | 896 | ||
897 | delete_OK: |
897 | delete_OK: |
898 | call add_disk_free_space ; add clusters to free disk space |
898 | call add_disk_free_space ; add clusters to free disk space |
899 | access_denied_01: |
899 | access_denied_01: |
900 | pop edx ecx eax |
900 | pop edx ecx eax |
901 | ret |
901 | ret |
902 | 902 | ||
903 | 903 | ||
904 | get_hd_info: |
904 | get_hd_info: |
905 | ;----------------------------------------------------------- |
905 | ;----------------------------------------------------------- |
906 | ; output : eax = 0 - ok |
906 | ; output : eax = 0 - ok |
907 | ; 3 - unknown FS |
907 | ; 3 - unknown FS |
908 | ; 10 - access denied |
908 | ; 10 - access denied |
909 | ; edx = cluster size in bytes |
909 | ; edx = cluster size in bytes |
910 | ; ebx = total clusters on disk |
910 | ; ebx = total clusters on disk |
911 | ; ecx = free clusters on disk |
911 | ; ecx = free clusters on disk |
912 | ;----------------------------------------------------------- |
912 | ;----------------------------------------------------------- |
913 | cmp [fs_type], 16 |
913 | cmp [fs_type], 16 |
914 | jz info_fat_ok |
914 | jz info_fat_ok |
915 | cmp [fs_type], 32 |
915 | cmp [fs_type], 32 |
916 | jz info_fat_ok |
916 | jz info_fat_ok |
917 | xor edx,edx |
917 | xor edx,edx |
918 | xor ebx,ebx |
918 | xor ebx,ebx |
919 | xor ecx,ecx |
919 | xor ecx,ecx |
920 | mov eax,ERROR_UNKNOWN_FS |
920 | mov eax,ERROR_UNKNOWN_FS |
921 | ret |
921 | ret |
922 | 922 | ||
923 | info_fat_ok: |
923 | info_fat_ok: |
924 | ; call reserve_hd1 |
924 | ; call reserve_hd1 |
925 | 925 | ||
926 | xor ecx,ecx ; count of free clusters |
926 | xor ecx,ecx ; count of free clusters |
927 | mov eax,2 |
927 | mov eax,2 |
928 | mov ebx,[LAST_CLUSTER] |
928 | mov ebx,[LAST_CLUSTER] |
929 | 929 | ||
930 | info_cluster: |
930 | info_cluster: |
931 | push eax |
931 | push eax |
932 | call get_FAT ; get cluster info |
932 | call get_FAT ; get cluster info |
933 | cmp [hd_error],0 |
933 | cmp [hd_error],0 |
934 | jne info_access_denied |
934 | jne info_access_denied |
935 | 935 | ||
936 | test eax,eax ; is it free? |
936 | test eax,eax ; is it free? |
937 | jnz info_used ; no |
937 | jnz info_used ; no |
938 | inc ecx |
938 | inc ecx |
939 | 939 | ||
940 | info_used: |
940 | info_used: |
941 | pop eax |
941 | pop eax |
942 | inc eax |
942 | inc eax |
943 | cmp eax,ebx ; is above last cluster? |
943 | cmp eax,ebx ; is above last cluster? |
944 | jbe info_cluster ; no. test next cluster |
944 | jbe info_cluster ; no. test next cluster |
945 | 945 | ||
946 | dec ebx ; cluster count |
946 | dec ebx ; cluster count |
947 | imul edx,[SECTORS_PER_CLUSTER],512 ; cluster size in bytes |
947 | imul edx,[SECTORS_PER_CLUSTER],512 ; cluster size in bytes |
948 | mov [hd1_status],0 |
948 | mov [hd1_status],0 |
949 | xor eax,eax |
949 | xor eax,eax |
950 | ret |
950 | ret |
951 | 951 | ||
952 | info_access_denied: |
952 | info_access_denied: |
953 | add esp,4 |
953 | add esp,4 |
954 | xor edx,edx |
954 | xor edx,edx |
955 | xor ebx,ebx |
955 | xor ebx,ebx |
956 | xor ecx,ecx |
956 | xor ecx,ecx |
957 | mov eax,ERROR_ACCESS_DENIED |
957 | mov eax,ERROR_ACCESS_DENIED |
958 | ret |
958 | ret |
959 | 959 | ||
960 | update_disk: |
960 | update_disk: |
961 | ;----------------------------------------------------------- |
961 | ;----------------------------------------------------------- |
962 | ; write changed fat and cache to disk |
962 | ; write changed fat and cache to disk |
963 | ;----------------------------------------------------------- |
963 | ;----------------------------------------------------------- |
964 | cmp [fat_change],0 ; is fat changed? |
964 | cmp [fat_change],0 ; is fat changed? |
965 | je upd_no_change |
965 | je upd_no_change |
966 | 966 | ||
967 | call write_fat_sector |
967 | call write_fat_sector |
968 | cmp [hd_error],0 |
968 | cmp [hd_error],0 |
969 | jne update_disk_acces_denied |
969 | jne update_disk_acces_denied |
970 | 970 | ||
971 | upd_no_change: |
971 | upd_no_change: |
972 | 972 | ||
973 | call write_cache |
973 | call write_cache |
974 | update_disk_acces_denied: |
974 | update_disk_acces_denied: |
975 | ret |
975 | ret |
976 | 976 | ||
977 | 977 | ||
978 | ; \begin{diamond} |
978 | ; \begin{diamond} |
979 | hd_find_lfn: |
979 | hd_find_lfn: |
980 | ; in: esi+ebp -> name |
980 | ; in: esi+ebp -> name |
981 | ; out: CF=1 - file not found |
981 | ; out: CF=1 - file not found |
982 | ; else CF=0 and edi->direntry, eax=sector |
982 | ; else CF=0 and edi->direntry, eax=sector |
983 | ; destroys eax |
983 | ; destroys eax |
984 | push esi edi |
984 | push esi edi |
985 | push 0 |
985 | push 0 |
986 | push 0 |
986 | push 0 |
987 | push fat16_root_first |
987 | push fat16_root_first |
988 | push fat16_root_next |
988 | push fat16_root_next |
989 | mov eax, [ROOT_CLUSTER] |
989 | mov eax, [ROOT_CLUSTER] |
990 | cmp [fs_type], 32 |
990 | cmp [fs_type], 32 |
991 | jz .fat32 |
991 | jz .fat32 |
992 | .loop: |
992 | .loop: |
993 | call fat_find_lfn |
993 | call fat_find_lfn |
994 | jc .notfound |
994 | jc .notfound |
995 | cmp byte [esi], 0 |
995 | cmp byte [esi], 0 |
996 | jz .found |
996 | jz .found |
997 | .continue: |
997 | .continue: |
998 | test byte [edi+11], 10h |
998 | test byte [edi+11], 10h |
999 | jz .notfound |
999 | jz .notfound |
1000 | and dword [esp+12], 0 |
1000 | and dword [esp+12], 0 |
1001 | mov eax, [edi+20-2] |
1001 | mov eax, [edi+20-2] |
1002 | mov ax, [edi+26] ; cluster |
1002 | mov ax, [edi+26] ; cluster |
1003 | .fat32: |
1003 | .fat32: |
1004 | mov [esp+8], eax |
1004 | mov [esp+8], eax |
1005 | mov dword [esp+4], fat_notroot_first |
1005 | mov dword [esp+4], fat_notroot_first |
1006 | mov dword [esp], fat_notroot_next |
1006 | mov dword [esp], fat_notroot_next |
1007 | jmp .loop |
1007 | jmp .loop |
1008 | .notfound: |
1008 | .notfound: |
1009 | add esp, 16 |
1009 | add esp, 16 |
1010 | pop edi esi |
1010 | pop edi esi |
1011 | stc |
1011 | stc |
1012 | ret |
1012 | ret |
1013 | .found: |
1013 | .found: |
1014 | test ebp, ebp |
1014 | test ebp, ebp |
1015 | jz @f |
1015 | jz @f |
1016 | mov esi, ebp |
1016 | mov esi, ebp |
1017 | xor ebp, ebp |
1017 | xor ebp, ebp |
1018 | jmp .continue |
1018 | jmp .continue |
1019 | @@: |
1019 | @@: |
1020 | lea eax, [esp+8] |
1020 | lea eax, [esp+8] |
1021 | cmp dword [eax], 0 |
1021 | cmp dword [eax], 0 |
1022 | jz .root |
1022 | jz .root |
1023 | call fat_get_sector |
1023 | call fat_get_sector |
1024 | jmp .cmn |
1024 | jmp .cmn |
1025 | .root: |
1025 | .root: |
1026 | mov eax, [eax+4] |
1026 | mov eax, [eax+4] |
1027 | add eax, [ROOT_START] |
1027 | add eax, [ROOT_START] |
1028 | .cmn: |
1028 | .cmn: |
1029 | add esp, 20 ; CF=0 |
1029 | add esp, 20 ; CF=0 |
1030 | pop esi |
1030 | pop esi |
1031 | ret |
1031 | ret |
1032 | 1032 | ||
1033 | ;---------------------------------------------------------------- |
1033 | ;---------------------------------------------------------------- |
1034 | ; |
1034 | ; |
1035 | ; fs_HdRead - LFN variant for reading hard disk |
1035 | ; fs_HdRead - LFN variant for reading hard disk |
1036 | ; |
1036 | ; |
1037 | ; esi points to filename |
1037 | ; esi points to filename |
1038 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1038 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1039 | ; may be ebx=0 - start from first byte |
1039 | ; may be ebx=0 - start from first byte |
1040 | ; ecx number of bytes to read, 0+ |
1040 | ; ecx number of bytes to read, 0+ |
1041 | ; edx mem location to return data |
1041 | ; edx mem location to return data |
1042 | ; |
1042 | ; |
1043 | ; ret ebx = bytes read or 0xffffffff file not found |
1043 | ; ret ebx = bytes read or 0xffffffff file not found |
1044 | ; eax = 0 ok read or other = errormsg |
1044 | ; eax = 0 ok read or other = errormsg |
1045 | ; |
1045 | ; |
1046 | ;-------------------------------------------------------------- |
1046 | ;-------------------------------------------------------------- |
1047 | fs_HdRead: |
1047 | fs_HdRead: |
1048 | cmp [fs_type], 16 |
1048 | cmp [fs_type], 16 |
1049 | jz @f |
1049 | jz @f |
1050 | cmp [fs_type], 32 |
1050 | cmp [fs_type], 32 |
1051 | jz @f |
1051 | jz @f |
1052 | cmp [fs_type], 1 |
1052 | cmp [fs_type], 1 |
1053 | jz ntfs_HdRead |
1053 | jz ntfs_HdRead |
1054 | cmp [fs_type], 2 |
1054 | cmp [fs_type], 2 |
1055 | jz ext2_HdRead |
1055 | jz ext2_HdRead |
1056 | or ebx, -1 |
1056 | or ebx, -1 |
1057 | mov eax, ERROR_UNKNOWN_FS |
1057 | mov eax, ERROR_UNKNOWN_FS |
1058 | ret |
1058 | ret |
1059 | @@: |
1059 | @@: |
1060 | push edi |
1060 | push edi |
1061 | cmp byte [esi], 0 |
1061 | cmp byte [esi], 0 |
1062 | jnz @f |
1062 | jnz @f |
1063 | .noaccess: |
1063 | .noaccess: |
1064 | pop edi |
1064 | pop edi |
1065 | .noaccess_2: |
1065 | .noaccess_2: |
1066 | or ebx, -1 |
1066 | or ebx, -1 |
1067 | mov eax, ERROR_ACCESS_DENIED |
1067 | mov eax, ERROR_ACCESS_DENIED |
1068 | ret |
1068 | ret |
1069 | 1069 | ||
1070 | @@: |
1070 | @@: |
1071 | call hd_find_lfn |
1071 | call hd_find_lfn |
1072 | jnc .found |
1072 | jnc .found |
1073 | pop edi |
1073 | pop edi |
1074 | cmp [hd_error],0 |
1074 | cmp [hd_error],0 |
1075 | jne .noaccess_2 |
1075 | jne .noaccess_2 |
1076 | or ebx, -1 |
1076 | or ebx, -1 |
1077 | mov eax, ERROR_FILE_NOT_FOUND |
1077 | mov eax, ERROR_FILE_NOT_FOUND |
1078 | ret |
1078 | ret |
1079 | 1079 | ||
1080 | .found: |
1080 | .found: |
1081 | test byte [edi+11], 0x10 ; do not allow read directories |
1081 | test byte [edi+11], 0x10 ; do not allow read directories |
1082 | jnz .noaccess |
1082 | jnz .noaccess |
1083 | test ebx, ebx |
1083 | test ebx, ebx |
1084 | jz .l1 |
1084 | jz .l1 |
1085 | cmp dword [ebx+4], 0 |
1085 | cmp dword [ebx+4], 0 |
1086 | jz @f |
1086 | jz @f |
1087 | xor ebx, ebx |
1087 | xor ebx, ebx |
1088 | .reteof: |
1088 | .reteof: |
1089 | mov eax, 6 |
1089 | mov eax, 6 |
1090 | pop edi |
1090 | pop edi |
1091 | ret |
1091 | ret |
1092 | @@: |
1092 | @@: |
1093 | mov ebx, [ebx] |
1093 | mov ebx, [ebx] |
1094 | .l1: |
1094 | .l1: |
1095 | push ecx edx |
1095 | push ecx edx |
1096 | push 0 |
1096 | push 0 |
1097 | mov eax, [edi+28] |
1097 | mov eax, [edi+28] |
1098 | sub eax, ebx |
1098 | sub eax, ebx |
1099 | jb .eof |
1099 | jb .eof |
1100 | cmp eax, ecx |
1100 | cmp eax, ecx |
1101 | jae @f |
1101 | jae @f |
1102 | mov ecx, eax |
1102 | mov ecx, eax |
1103 | mov byte [esp], 6 |
1103 | mov byte [esp], 6 |
1104 | @@: |
1104 | @@: |
1105 | mov eax, [edi+20-2] |
1105 | mov eax, [edi+20-2] |
1106 | mov ax, [edi+26] |
1106 | mov ax, [edi+26] |
1107 | ; now eax=cluster, ebx=position, ecx=count, edx=buffer for data |
1107 | ; now eax=cluster, ebx=position, ecx=count, edx=buffer for data |
1108 | .new_cluster: |
1108 | .new_cluster: |
1109 | jecxz .new_sector |
1109 | jecxz .new_sector |
1110 | test eax, eax |
1110 | test eax, eax |
1111 | jz .eof |
1111 | jz .eof |
1112 | cmp eax, [fatRESERVED] |
1112 | cmp eax, [fatRESERVED] |
1113 | jae .eof |
1113 | jae .eof |
1114 | mov [cluster_tmp], eax |
1114 | mov [cluster_tmp], eax |
1115 | dec eax |
1115 | dec eax |
1116 | dec eax |
1116 | dec eax |
1117 | mov edi, [SECTORS_PER_CLUSTER] |
1117 | mov edi, [SECTORS_PER_CLUSTER] |
1118 | imul eax, edi |
1118 | imul eax, edi |
1119 | add eax, [DATA_START] |
1119 | add eax, [DATA_START] |
1120 | .new_sector: |
1120 | .new_sector: |
1121 | test ecx, ecx |
1121 | test ecx, ecx |
1122 | jz .done |
1122 | jz .done |
1123 | sub ebx, 512 |
1123 | sub ebx, 512 |
1124 | jae .skip |
1124 | jae .skip |
1125 | add ebx, 512 |
1125 | add ebx, 512 |
1126 | jnz .force_buf |
1126 | jnz .force_buf |
1127 | cmp ecx, 512 |
1127 | cmp ecx, 512 |
1128 | jb .force_buf |
1128 | jb .force_buf |
1129 | ; we may read directly to given buffer |
1129 | ; we may read directly to given buffer |
1130 | push ebx |
1130 | push ebx |
1131 | mov ebx, edx |
1131 | mov ebx, edx |
1132 | call hd_read |
1132 | call hd_read |
1133 | pop ebx |
1133 | pop ebx |
1134 | cmp [hd_error],0 |
1134 | cmp [hd_error],0 |
1135 | jne .noaccess_1 |
1135 | jne .noaccess_1 |
1136 | add edx, 512 |
1136 | add edx, 512 |
1137 | sub ecx, 512 |
1137 | sub ecx, 512 |
1138 | jmp .skip |
1138 | jmp .skip |
1139 | .force_buf: |
1139 | .force_buf: |
1140 | ; we must read sector to temporary buffer and then copy it to destination |
1140 | ; we must read sector to temporary buffer and then copy it to destination |
1141 | push eax ebx |
1141 | push eax ebx |
1142 | mov ebx, buffer |
1142 | mov ebx, buffer |
1143 | call hd_read |
1143 | call hd_read |
1144 | mov eax, ebx |
1144 | mov eax, ebx |
1145 | pop ebx |
1145 | pop ebx |
1146 | cmp [hd_error],0 |
1146 | cmp [hd_error],0 |
1147 | jne .noaccess_3 |
1147 | jne .noaccess_3 |
1148 | add eax, ebx |
1148 | add eax, ebx |
1149 | push ecx |
1149 | push ecx |
1150 | add ecx, ebx |
1150 | add ecx, ebx |
1151 | cmp ecx, 512 |
1151 | cmp ecx, 512 |
1152 | jbe @f |
1152 | jbe @f |
1153 | mov ecx, 512 |
1153 | mov ecx, 512 |
1154 | @@: |
1154 | @@: |
1155 | sub ecx, ebx |
1155 | sub ecx, ebx |
1156 | mov ebx, edx |
1156 | mov ebx, edx |
1157 | call memmove |
1157 | call memmove |
1158 | add edx, ecx |
1158 | add edx, ecx |
1159 | sub [esp], ecx |
1159 | sub [esp], ecx |
1160 | pop ecx |
1160 | pop ecx |
1161 | pop eax |
1161 | pop eax |
1162 | xor ebx, ebx |
1162 | xor ebx, ebx |
1163 | .skip: |
1163 | .skip: |
1164 | inc eax |
1164 | inc eax |
1165 | dec edi |
1165 | dec edi |
1166 | jnz .new_sector |
1166 | jnz .new_sector |
1167 | mov eax, [cluster_tmp] |
1167 | mov eax, [cluster_tmp] |
1168 | call get_FAT |
1168 | call get_FAT |
1169 | cmp [hd_error],0 |
1169 | cmp [hd_error],0 |
1170 | jne .noaccess_1 |
1170 | jne .noaccess_1 |
1171 | 1171 | ||
1172 | jmp .new_cluster |
1172 | jmp .new_cluster |
1173 | .noaccess_3: |
1173 | .noaccess_3: |
1174 | pop eax |
1174 | pop eax |
1175 | .noaccess_1: |
1175 | .noaccess_1: |
1176 | pop eax |
1176 | pop eax |
1177 | push 11 |
1177 | push 11 |
1178 | .done: |
1178 | .done: |
1179 | mov ebx, edx |
1179 | mov ebx, edx |
1180 | pop eax edx ecx edi |
1180 | pop eax edx ecx edi |
1181 | sub ebx, edx |
1181 | sub ebx, edx |
1182 | ret |
1182 | ret |
1183 | .eof: |
1183 | .eof: |
1184 | mov ebx, edx |
1184 | mov ebx, edx |
1185 | pop eax edx ecx |
1185 | pop eax edx ecx |
1186 | sub ebx, edx |
1186 | sub ebx, edx |
1187 | jmp .reteof |
1187 | jmp .reteof |
1188 | 1188 | ||
1189 | ;---------------------------------------------------------------- |
1189 | ;---------------------------------------------------------------- |
1190 | ; |
1190 | ; |
1191 | ; fs_HdReadFolder - LFN variant for reading hard disk folder |
1191 | ; fs_HdReadFolder - LFN variant for reading hard disk folder |
1192 | ; |
1192 | ; |
1193 | ; esi points to filename |
1193 | ; esi points to filename |
1194 | ; ebx pointer to structure 32-bit number = first wanted block, 0+ |
1194 | ; ebx pointer to structure 32-bit number = first wanted block, 0+ |
1195 | ; & flags (bitfields) |
1195 | ; & flags (bitfields) |
1196 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
1196 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
1197 | ; ecx number of blocks to read, 0+ |
1197 | ; ecx number of blocks to read, 0+ |
1198 | ; edx mem location to return data |
1198 | ; edx mem location to return data |
1199 | ; |
1199 | ; |
1200 | ; ret ebx = blocks read or 0xffffffff folder not found |
1200 | ; ret ebx = blocks read or 0xffffffff folder not found |
1201 | ; eax = 0 ok read or other = errormsg |
1201 | ; eax = 0 ok read or other = errormsg |
1202 | ; |
1202 | ; |
1203 | ;-------------------------------------------------------------- |
1203 | ;-------------------------------------------------------------- |
1204 | fs_HdReadFolder: |
1204 | fs_HdReadFolder: |
1205 | cmp [fs_type], 1 |
1205 | cmp [fs_type], 1 |
1206 | jz ntfs_HdReadFolder |
1206 | jz ntfs_HdReadFolder |
1207 | cmp [fs_type], 2 |
1207 | cmp [fs_type], 2 |
1208 | jz ext2_HdReadFolder |
1208 | jz ext2_HdReadFolder |
1209 | cmp [fs_type], 16 |
1209 | cmp [fs_type], 16 |
1210 | jz @f |
1210 | jz @f |
1211 | cmp [fs_type], 32 |
1211 | cmp [fs_type], 32 |
1212 | jz @f |
1212 | jz @f |
1213 | push ERROR_UNSUPPORTED_FS |
1213 | push ERROR_UNSUPPORTED_FS |
1214 | pop eax |
1214 | pop eax |
1215 | or ebx, -1 |
1215 | or ebx, -1 |
1216 | ret |
1216 | ret |
1217 | @@: |
1217 | @@: |
1218 | mov eax, [ROOT_CLUSTER] |
1218 | mov eax, [ROOT_CLUSTER] |
1219 | push edi |
1219 | push edi |
1220 | cmp byte [esi], 0 |
1220 | cmp byte [esi], 0 |
1221 | jz .doit |
1221 | jz .doit |
1222 | call hd_find_lfn |
1222 | call hd_find_lfn |
1223 | jnc .found |
1223 | jnc .found |
1224 | pop edi |
1224 | pop edi |
1225 | or ebx, -1 |
1225 | or ebx, -1 |
1226 | mov eax, ERROR_FILE_NOT_FOUND |
1226 | mov eax, ERROR_FILE_NOT_FOUND |
1227 | ret |
1227 | ret |
1228 | .found: |
1228 | .found: |
1229 | test byte [edi+11], 0x10 ; do not allow read files |
1229 | test byte [edi+11], 0x10 ; do not allow read files |
1230 | jnz .found_dir |
1230 | jnz .found_dir |
1231 | pop edi |
1231 | pop edi |
1232 | or ebx, -1 |
1232 | or ebx, -1 |
1233 | mov eax, ERROR_ACCESS_DENIED |
1233 | mov eax, ERROR_ACCESS_DENIED |
1234 | ret |
1234 | ret |
1235 | .found_dir: |
1235 | .found_dir: |
1236 | mov eax, [edi+20-2] |
1236 | mov eax, [edi+20-2] |
1237 | mov ax, [edi+26] ; eax=cluster |
1237 | mov ax, [edi+26] ; eax=cluster |
1238 | .doit: |
1238 | .doit: |
1239 | push esi ecx |
1239 | push esi ecx |
1240 | push ebp |
1240 | push ebp |
1241 | sub esp, 262*2 ; reserve space for LFN |
1241 | sub esp, 262*2 ; reserve space for LFN |
1242 | mov ebp, esp |
1242 | mov ebp, esp |
1243 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE name |
1243 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE name |
1244 | mov ebx, [ebx] |
1244 | mov ebx, [ebx] |
1245 | ; init header |
1245 | ; init header |
1246 | push eax ecx |
1246 | push eax ecx |
1247 | mov edi, edx |
1247 | mov edi, edx |
1248 | mov ecx, 32/4 |
1248 | mov ecx, 32/4 |
1249 | xor eax, eax |
1249 | xor eax, eax |
1250 | rep stosd |
1250 | rep stosd |
1251 | pop ecx eax |
1251 | pop ecx eax |
1252 | mov byte [edx], 1 ; version |
1252 | mov byte [edx], 1 ; version |
1253 | mov esi, edi ; esi points to BDFE |
1253 | mov esi, edi ; esi points to BDFE |
1254 | .new_cluster: |
1254 | .new_cluster: |
1255 | mov [cluster_tmp], eax |
1255 | mov [cluster_tmp], eax |
1256 | test eax, eax |
1256 | test eax, eax |
1257 | jnz @f |
1257 | jnz @f |
1258 | cmp [fs_type], 32 |
1258 | cmp [fs_type], 32 |
1259 | jz .notfound |
1259 | jz .notfound |
1260 | mov eax, [ROOT_START] |
1260 | mov eax, [ROOT_START] |
1261 | push [ROOT_SECTORS] |
1261 | push [ROOT_SECTORS] |
1262 | push ebx |
1262 | push ebx |
1263 | jmp .new_sector |
1263 | jmp .new_sector |
1264 | @@: |
1264 | @@: |
1265 | dec eax |
1265 | dec eax |
1266 | dec eax |
1266 | dec eax |
1267 | imul eax, [SECTORS_PER_CLUSTER] |
1267 | imul eax, [SECTORS_PER_CLUSTER] |
1268 | push [SECTORS_PER_CLUSTER] |
1268 | push [SECTORS_PER_CLUSTER] |
1269 | add eax, [DATA_START] |
1269 | add eax, [DATA_START] |
1270 | push ebx |
1270 | push ebx |
1271 | .new_sector: |
1271 | .new_sector: |
1272 | mov ebx, buffer |
1272 | mov ebx, buffer |
1273 | mov edi, ebx |
1273 | mov edi, ebx |
1274 | call hd_read |
1274 | call hd_read |
1275 | cmp [hd_error], 0 |
1275 | cmp [hd_error], 0 |
1276 | jnz .notfound2 |
1276 | jnz .notfound2 |
1277 | add ebx, 512 |
1277 | add ebx, 512 |
1278 | push eax |
1278 | push eax |
1279 | .l1: |
1279 | .l1: |
1280 | call fat_get_name |
1280 | call fat_get_name |
1281 | jc .l2 |
1281 | jc .l2 |
1282 | cmp byte [edi+11], 0xF |
1282 | cmp byte [edi+11], 0xF |
1283 | jnz .do_bdfe |
1283 | jnz .do_bdfe |
1284 | add edi, 0x20 |
1284 | add edi, 0x20 |
1285 | cmp edi, ebx |
1285 | cmp edi, ebx |
1286 | jb .do_bdfe |
1286 | jb .do_bdfe |
1287 | pop eax |
1287 | pop eax |
1288 | inc eax |
1288 | inc eax |
1289 | dec dword [esp+4] |
1289 | dec dword [esp+4] |
1290 | jnz @f |
1290 | jnz @f |
1291 | mov eax, [cluster_tmp] |
1291 | mov eax, [cluster_tmp] |
1292 | test eax, eax |
1292 | test eax, eax |
1293 | jz .done |
1293 | jz .done |
1294 | call get_FAT |
1294 | call get_FAT |
1295 | cmp [hd_error], 0 |
1295 | cmp [hd_error], 0 |
1296 | jnz .notfound2 |
1296 | jnz .notfound2 |
1297 | cmp eax, 2 |
1297 | cmp eax, 2 |
1298 | jb .done |
1298 | jb .done |
1299 | cmp eax, [fatRESERVED] |
1299 | cmp eax, [fatRESERVED] |
1300 | jae .done |
1300 | jae .done |
1301 | push eax |
1301 | push eax |
1302 | mov eax, [SECTORS_PER_CLUSTER] |
1302 | mov eax, [SECTORS_PER_CLUSTER] |
1303 | mov [esp+8], eax |
1303 | mov [esp+8], eax |
1304 | pop eax |
1304 | pop eax |
1305 | mov [cluster_tmp], eax |
1305 | mov [cluster_tmp], eax |
1306 | dec eax |
1306 | dec eax |
1307 | dec eax |
1307 | dec eax |
1308 | imul eax, [SECTORS_PER_CLUSTER] |
1308 | imul eax, [SECTORS_PER_CLUSTER] |
1309 | add eax, [DATA_START] |
1309 | add eax, [DATA_START] |
1310 | @@: |
1310 | @@: |
1311 | mov ebx, buffer |
1311 | mov ebx, buffer |
1312 | mov edi, ebx |
1312 | mov edi, ebx |
1313 | call hd_read |
1313 | call hd_read |
1314 | cmp [hd_error], 0 |
1314 | cmp [hd_error], 0 |
1315 | jnz .notfound2 |
1315 | jnz .notfound2 |
1316 | add ebx, 512 |
1316 | add ebx, 512 |
1317 | push eax |
1317 | push eax |
1318 | .do_bdfe: |
1318 | .do_bdfe: |
1319 | inc dword [edx+8] ; new file found |
1319 | inc dword [edx+8] ; new file found |
1320 | dec dword [esp+4] |
1320 | dec dword [esp+4] |
1321 | jns .l2 |
1321 | jns .l2 |
1322 | dec ecx |
1322 | dec ecx |
1323 | js .l2 |
1323 | js .l2 |
1324 | inc dword [edx+4] ; new file block copied |
1324 | inc dword [edx+4] ; new file block copied |
1325 | call fat_entry_to_bdfe |
1325 | call fat_entry_to_bdfe |
1326 | .l2: |
1326 | .l2: |
1327 | add edi, 0x20 |
1327 | add edi, 0x20 |
1328 | cmp edi, ebx |
1328 | cmp edi, ebx |
1329 | jb .l1 |
1329 | jb .l1 |
1330 | pop eax |
1330 | pop eax |
1331 | inc eax |
1331 | inc eax |
1332 | dec dword [esp+4] |
1332 | dec dword [esp+4] |
1333 | jnz .new_sector |
1333 | jnz .new_sector |
1334 | mov eax, [cluster_tmp] |
1334 | mov eax, [cluster_tmp] |
1335 | test eax, eax |
1335 | test eax, eax |
1336 | jz .done |
1336 | jz .done |
1337 | call get_FAT |
1337 | call get_FAT |
1338 | cmp [hd_error], 0 |
1338 | cmp [hd_error], 0 |
1339 | jnz .notfound2 |
1339 | jnz .notfound2 |
1340 | cmp eax, 2 |
1340 | cmp eax, 2 |
1341 | jb .done |
1341 | jb .done |
1342 | cmp eax, [fatRESERVED] |
1342 | cmp eax, [fatRESERVED] |
1343 | jae .done |
1343 | jae .done |
1344 | push eax |
1344 | push eax |
1345 | mov eax, [SECTORS_PER_CLUSTER] |
1345 | mov eax, [SECTORS_PER_CLUSTER] |
1346 | mov [esp+8], eax |
1346 | mov [esp+8], eax |
1347 | pop eax |
1347 | pop eax |
1348 | pop ebx |
1348 | pop ebx |
1349 | add esp, 4 |
1349 | add esp, 4 |
1350 | jmp .new_cluster |
1350 | jmp .new_cluster |
1351 | .notfound2: |
1351 | .notfound2: |
1352 | add esp, 8 |
1352 | add esp, 8 |
1353 | .notfound: |
1353 | .notfound: |
1354 | add esp, 262*2+4 |
1354 | add esp, 262*2+4 |
1355 | pop ebp ecx esi edi |
1355 | pop ebp ecx esi edi |
1356 | mov eax, ERROR_FILE_NOT_FOUND |
1356 | mov eax, ERROR_FILE_NOT_FOUND |
1357 | or ebx, -1 |
1357 | or ebx, -1 |
1358 | ret |
1358 | ret |
1359 | .done: |
1359 | .done: |
1360 | add esp, 262*2+4+8 |
1360 | add esp, 262*2+4+8 |
1361 | pop ebp |
1361 | pop ebp |
1362 | mov ebx, [edx+4] |
1362 | mov ebx, [edx+4] |
1363 | xor eax, eax |
1363 | xor eax, eax |
1364 | dec ecx |
1364 | dec ecx |
1365 | js @f |
1365 | js @f |
1366 | mov al, ERROR_END_OF_FILE |
1366 | mov al, ERROR_END_OF_FILE |
1367 | @@: |
1367 | @@: |
1368 | pop ecx esi edi |
1368 | pop ecx esi edi |
1369 | ret |
1369 | ret |
1370 | 1370 | ||
1371 | fat16_root_next: |
1371 | fat16_root_next: |
1372 | cmp edi, buffer+0x200-0x20 |
1372 | cmp edi, buffer+0x200-0x20 |
1373 | jae fat16_root_next_sector |
1373 | jae fat16_root_next_sector |
1374 | add edi, 0x20 |
1374 | add edi, 0x20 |
1375 | ret ; CF=0 |
1375 | ret ; CF=0 |
1376 | fat16_root_next_sector: |
1376 | fat16_root_next_sector: |
1377 | ; read next sector |
1377 | ; read next sector |
1378 | push [longname_sec2] |
1378 | push [longname_sec2] |
1379 | pop [longname_sec1] |
1379 | pop [longname_sec1] |
1380 | push ecx |
1380 | push ecx |
1381 | mov ecx, [eax+4] |
1381 | mov ecx, [eax+4] |
1382 | push ecx |
1382 | push ecx |
1383 | add ecx, [ROOT_START] |
1383 | add ecx, [ROOT_START] |
1384 | mov [longname_sec2], ecx |
1384 | mov [longname_sec2], ecx |
1385 | pop ecx |
1385 | pop ecx |
1386 | inc ecx |
1386 | inc ecx |
1387 | mov [eax+4], ecx |
1387 | mov [eax+4], ecx |
1388 | cmp ecx, [ROOT_SECTORS] |
1388 | cmp ecx, [ROOT_SECTORS] |
1389 | pop ecx |
1389 | pop ecx |
1390 | jae fat16_root_first.readerr |
1390 | jae fat16_root_first.readerr |
1391 | fat16_root_first: |
1391 | fat16_root_first: |
1392 | mov eax, [eax+4] |
1392 | mov eax, [eax+4] |
1393 | add eax, [ROOT_START] |
1393 | add eax, [ROOT_START] |
1394 | push ebx |
1394 | push ebx |
1395 | mov edi, buffer |
1395 | mov edi, buffer |
1396 | mov ebx, edi |
1396 | mov ebx, edi |
1397 | call hd_read |
1397 | call hd_read |
1398 | pop ebx |
1398 | pop ebx |
1399 | cmp [hd_error], 0 |
1399 | cmp [hd_error], 0 |
1400 | jnz .readerr |
1400 | jnz .readerr |
1401 | ret ; CF=0 |
1401 | ret ; CF=0 |
1402 | .readerr: |
1402 | .readerr: |
1403 | stc |
1403 | stc |
1404 | ret |
1404 | ret |
1405 | fat16_root_begin_write: |
1405 | fat16_root_begin_write: |
1406 | push edi eax |
1406 | push edi eax |
1407 | call fat16_root_first |
1407 | call fat16_root_first |
1408 | pop eax edi |
1408 | pop eax edi |
1409 | ret |
1409 | ret |
1410 | fat16_root_end_write: |
1410 | fat16_root_end_write: |
1411 | pusha |
1411 | pusha |
1412 | mov eax, [eax+4] |
1412 | mov eax, [eax+4] |
1413 | add eax, [ROOT_START] |
1413 | add eax, [ROOT_START] |
1414 | mov ebx, buffer |
1414 | mov ebx, buffer |
1415 | call hd_write |
1415 | call hd_write |
1416 | popa |
1416 | popa |
1417 | ret |
1417 | ret |
1418 | fat16_root_next_write: |
1418 | fat16_root_next_write: |
1419 | cmp edi, buffer+0x200 |
1419 | cmp edi, buffer+0x200 |
1420 | jae @f |
1420 | jae @f |
1421 | ret |
1421 | ret |
1422 | @@: |
1422 | @@: |
1423 | call fat16_root_end_write |
1423 | call fat16_root_end_write |
1424 | jmp fat16_root_next_sector |
1424 | jmp fat16_root_next_sector |
1425 | fat16_root_extend_dir: |
1425 | fat16_root_extend_dir: |
1426 | stc |
1426 | stc |
1427 | ret |
1427 | ret |
1428 | 1428 | ||
1429 | fat_notroot_next: |
1429 | fat_notroot_next: |
1430 | cmp edi, buffer+0x200-0x20 |
1430 | cmp edi, buffer+0x200-0x20 |
1431 | jae fat_notroot_next_sector |
1431 | jae fat_notroot_next_sector |
1432 | add edi, 0x20 |
1432 | add edi, 0x20 |
1433 | ret ; CF=0 |
1433 | ret ; CF=0 |
1434 | fat_notroot_next_sector: |
1434 | fat_notroot_next_sector: |
1435 | push [longname_sec2] |
1435 | push [longname_sec2] |
1436 | pop [longname_sec1] |
1436 | pop [longname_sec1] |
1437 | push eax |
1437 | push eax |
1438 | call fat_get_sector |
1438 | call fat_get_sector |
1439 | mov [longname_sec2], eax |
1439 | mov [longname_sec2], eax |
1440 | pop eax |
1440 | pop eax |
1441 | push ecx |
1441 | push ecx |
1442 | mov ecx, [eax+4] |
1442 | mov ecx, [eax+4] |
1443 | inc ecx |
1443 | inc ecx |
1444 | cmp ecx, [SECTORS_PER_CLUSTER] |
1444 | cmp ecx, [SECTORS_PER_CLUSTER] |
1445 | jae fat_notroot_next_cluster |
1445 | jae fat_notroot_next_cluster |
1446 | mov [eax+4], ecx |
1446 | mov [eax+4], ecx |
1447 | jmp @f |
1447 | jmp @f |
1448 | fat_notroot_next_cluster: |
1448 | fat_notroot_next_cluster: |
1449 | push eax |
1449 | push eax |
1450 | mov eax, [eax] |
1450 | mov eax, [eax] |
1451 | call get_FAT |
1451 | call get_FAT |
1452 | mov ecx, eax |
1452 | mov ecx, eax |
1453 | pop eax |
1453 | pop eax |
1454 | cmp [hd_error], 0 |
1454 | cmp [hd_error], 0 |
1455 | jnz fat_notroot_next_err |
1455 | jnz fat_notroot_next_err |
1456 | cmp ecx, [fatRESERVED] |
1456 | cmp ecx, [fatRESERVED] |
1457 | jae fat_notroot_next_err |
1457 | jae fat_notroot_next_err |
1458 | mov [eax], ecx |
1458 | mov [eax], ecx |
1459 | and dword [eax+4], 0 |
1459 | and dword [eax+4], 0 |
1460 | @@: |
1460 | @@: |
1461 | pop ecx |
1461 | pop ecx |
1462 | fat_notroot_first: |
1462 | fat_notroot_first: |
1463 | call fat_get_sector |
1463 | call fat_get_sector |
1464 | push ebx |
1464 | push ebx |
1465 | mov edi, buffer |
1465 | mov edi, buffer |
1466 | mov ebx, edi |
1466 | mov ebx, edi |
1467 | call hd_read |
1467 | call hd_read |
1468 | pop ebx |
1468 | pop ebx |
1469 | cmp [hd_error], 0 |
1469 | cmp [hd_error], 0 |
1470 | jnz @f |
1470 | jnz @f |
1471 | ret ; CF=0 |
1471 | ret ; CF=0 |
1472 | fat_notroot_next_err: |
1472 | fat_notroot_next_err: |
1473 | pop ecx |
1473 | pop ecx |
1474 | @@: |
1474 | @@: |
1475 | stc |
1475 | stc |
1476 | ret |
1476 | ret |
1477 | fat_notroot_begin_write: |
1477 | fat_notroot_begin_write: |
1478 | push eax edi |
1478 | push eax edi |
1479 | call fat_notroot_first |
1479 | call fat_notroot_first |
1480 | pop edi eax |
1480 | pop edi eax |
1481 | ret |
1481 | ret |
1482 | fat_notroot_end_write: |
1482 | fat_notroot_end_write: |
1483 | call fat_get_sector |
1483 | call fat_get_sector |
1484 | push ebx |
1484 | push ebx |
1485 | mov ebx, buffer |
1485 | mov ebx, buffer |
1486 | call hd_write |
1486 | call hd_write |
1487 | pop ebx |
1487 | pop ebx |
1488 | ret |
1488 | ret |
1489 | fat_notroot_next_write: |
1489 | fat_notroot_next_write: |
1490 | cmp edi, buffer+0x200 |
1490 | cmp edi, buffer+0x200 |
1491 | jae @f |
1491 | jae @f |
1492 | ret |
1492 | ret |
1493 | @@: |
1493 | @@: |
1494 | push eax |
1494 | push eax |
1495 | call fat_notroot_end_write |
1495 | call fat_notroot_end_write |
1496 | pop eax |
1496 | pop eax |
1497 | jmp fat_notroot_next_sector |
1497 | jmp fat_notroot_next_sector |
1498 | fat_notroot_extend_dir: |
1498 | fat_notroot_extend_dir: |
1499 | push eax |
1499 | push eax |
1500 | call get_free_FAT |
1500 | call get_free_FAT |
1501 | jnc .found |
1501 | jnc .found |
1502 | pop eax |
1502 | pop eax |
1503 | ret ; CF=1 |
1503 | ret ; CF=1 |
1504 | .found: |
1504 | .found: |
1505 | push edx |
1505 | push edx |
1506 | mov edx, [fatEND] |
1506 | mov edx, [fatEND] |
1507 | call set_FAT |
1507 | call set_FAT |
1508 | mov edx, eax |
1508 | mov edx, eax |
1509 | mov eax, [esp+4] |
1509 | mov eax, [esp+4] |
1510 | mov eax, [eax] |
1510 | mov eax, [eax] |
1511 | push edx |
1511 | push edx |
1512 | call set_FAT |
1512 | call set_FAT |
1513 | pop edx |
1513 | pop edx |
1514 | cmp [hd_error], 0 |
1514 | cmp [hd_error], 0 |
1515 | jz @f |
1515 | jz @f |
1516 | pop edx |
1516 | pop edx |
1517 | pop eax |
1517 | pop eax |
1518 | stc |
1518 | stc |
1519 | ret |
1519 | ret |
1520 | @@: |
1520 | @@: |
1521 | push ecx |
1521 | push ecx |
1522 | or ecx, -1 |
1522 | or ecx, -1 |
1523 | call add_disk_free_space |
1523 | call add_disk_free_space |
1524 | ; zero new cluster |
1524 | ; zero new cluster |
1525 | mov ecx, 512/4 |
1525 | mov ecx, 512/4 |
1526 | mov edi, buffer |
1526 | mov edi, buffer |
1527 | push edi |
1527 | push edi |
1528 | xor eax, eax |
1528 | xor eax, eax |
1529 | rep stosd |
1529 | rep stosd |
1530 | pop edi |
1530 | pop edi |
1531 | pop ecx |
1531 | pop ecx |
1532 | mov eax, [esp+4] |
1532 | mov eax, [esp+4] |
1533 | mov [eax], edx |
1533 | mov [eax], edx |
1534 | and dword [eax+4], 0 |
1534 | and dword [eax+4], 0 |
1535 | pop edx |
1535 | pop edx |
1536 | mov eax, [eax] |
1536 | mov eax, [eax] |
1537 | dec eax |
1537 | dec eax |
1538 | dec eax |
1538 | dec eax |
1539 | push ebx ecx |
1539 | push ebx ecx |
1540 | mov ecx, [SECTORS_PER_CLUSTER] |
1540 | mov ecx, [SECTORS_PER_CLUSTER] |
1541 | imul eax, ecx |
1541 | imul eax, ecx |
1542 | add eax, [DATA_START] |
1542 | add eax, [DATA_START] |
1543 | mov ebx, edi |
1543 | mov ebx, edi |
1544 | @@: |
1544 | @@: |
1545 | call hd_write |
1545 | call hd_write |
1546 | inc eax |
1546 | inc eax |
1547 | loop @b |
1547 | loop @b |
1548 | pop ecx ebx eax |
1548 | pop ecx ebx eax |
1549 | clc |
1549 | clc |
1550 | ret |
1550 | ret |
1551 | 1551 | ||
1552 | fat_get_sector: |
1552 | fat_get_sector: |
1553 | push ecx |
1553 | push ecx |
1554 | mov ecx, [eax] |
1554 | mov ecx, [eax] |
1555 | dec ecx |
1555 | dec ecx |
1556 | dec ecx |
1556 | dec ecx |
1557 | imul ecx, [SECTORS_PER_CLUSTER] |
1557 | imul ecx, [SECTORS_PER_CLUSTER] |
1558 | add ecx, [DATA_START] |
1558 | add ecx, [DATA_START] |
1559 | add ecx, [eax+4] |
1559 | add ecx, [eax+4] |
1560 | mov eax, ecx |
1560 | mov eax, ecx |
1561 | pop ecx |
1561 | pop ecx |
1562 | ret |
1562 | ret |
1563 | 1563 | ||
1564 | ;---------------------------------------------------------------- |
1564 | ;---------------------------------------------------------------- |
1565 | ; |
1565 | ; |
1566 | ; fs_HdRewrite - LFN variant for writing hard disk |
1566 | ; fs_HdRewrite - LFN variant for writing hard disk |
1567 | ; |
1567 | ; |
1568 | ; esi points to filename |
1568 | ; esi points to filename |
1569 | ; ebx ignored (reserved) |
1569 | ; ebx ignored (reserved) |
1570 | ; ecx number of bytes to write, 0+ |
1570 | ; ecx number of bytes to write, 0+ |
1571 | ; edx mem location to data |
1571 | ; edx mem location to data |
1572 | ; |
1572 | ; |
1573 | ; ret ebx = number of written bytes |
1573 | ; ret ebx = number of written bytes |
1574 | ; eax = 0 ok read or other = errormsg |
1574 | ; eax = 0 ok read or other = errormsg |
1575 | ; |
1575 | ; |
1576 | ;-------------------------------------------------------------- |
1576 | ;-------------------------------------------------------------- |
1577 | fshrad: |
1577 | fshrad: |
1578 | mov eax, ERROR_ACCESS_DENIED |
1578 | mov eax, ERROR_ACCESS_DENIED |
1579 | xor ebx, ebx |
1579 | xor ebx, ebx |
1580 | ret |
1580 | ret |
1581 | fshrfs: |
1581 | fshrfs: |
1582 | mov eax, ERROR_UNKNOWN_FS |
1582 | mov eax, ERROR_UNKNOWN_FS |
1583 | xor ebx, ebx |
1583 | xor ebx, ebx |
1584 | ret |
1584 | ret |
1585 | 1585 | ||
1586 | fs_HdCreateFolder: |
1586 | fs_HdCreateFolder: |
1587 | mov al, 1 |
1587 | mov al, 1 |
1588 | jmp fs_HdRewrite.common |
1588 | jmp fs_HdRewrite.common |
1589 | 1589 | ||
1590 | fs_HdRewrite: |
1590 | fs_HdRewrite: |
1591 | xor eax, eax |
1591 | xor eax, eax |
1592 | .common: |
1592 | .common: |
1593 | cmp [fs_type], 1 |
1593 | cmp [fs_type], 1 |
1594 | jz ntfs_HdRewrite |
1594 | jz ntfs_HdRewrite |
1595 | cmp [fs_type], 2 |
1595 | cmp [fs_type], 2 |
1596 | jz ext2_HdRewrite |
1596 | jz ext2_HdRewrite |
1597 | cmp [fs_type], 16 |
1597 | cmp [fs_type], 16 |
1598 | jz @f |
1598 | jz @f |
1599 | cmp [fs_type], 32 |
1599 | cmp [fs_type], 32 |
1600 | jnz fshrfs |
1600 | jnz fshrfs |
1601 | @@: |
1601 | @@: |
1602 | cmp byte [esi], 0 |
1602 | cmp byte [esi], 0 |
1603 | jz fshrad |
1603 | jz fshrad |
1604 | pushad |
1604 | pushad |
1605 | xor edi, edi |
1605 | xor edi, edi |
1606 | push esi |
1606 | push esi |
1607 | test ebp, ebp |
1607 | test ebp, ebp |
1608 | jz @f |
1608 | jz @f |
1609 | mov esi, ebp |
1609 | mov esi, ebp |
1610 | @@: |
1610 | @@: |
1611 | lodsb |
1611 | lodsb |
1612 | test al, al |
1612 | test al, al |
1613 | jz @f |
1613 | jz @f |
1614 | cmp al, '/' |
1614 | cmp al, '/' |
1615 | jnz @b |
1615 | jnz @b |
1616 | lea edi, [esi-1] |
1616 | lea edi, [esi-1] |
1617 | jmp @b |
1617 | jmp @b |
1618 | @@: |
1618 | @@: |
1619 | pop esi |
1619 | pop esi |
1620 | test edi, edi |
1620 | test edi, edi |
1621 | jnz .noroot |
1621 | jnz .noroot |
1622 | test ebp, ebp |
1622 | test ebp, ebp |
1623 | jnz .hasebp |
1623 | jnz .hasebp |
1624 | mov ebp, [ROOT_CLUSTER] |
1624 | mov ebp, [ROOT_CLUSTER] |
1625 | cmp [fs_type], 32 |
1625 | cmp [fs_type], 32 |
1626 | jz .pushnotroot |
1626 | jz .pushnotroot |
1627 | push fat16_root_extend_dir |
1627 | push fat16_root_extend_dir |
1628 | push fat16_root_end_write |
1628 | push fat16_root_end_write |
1629 | push fat16_root_next_write |
1629 | push fat16_root_next_write |
1630 | push fat16_root_begin_write |
1630 | push fat16_root_begin_write |
1631 | xor ebp, ebp |
1631 | xor ebp, ebp |
1632 | push ebp |
1632 | push ebp |
1633 | push ebp |
1633 | push ebp |
1634 | push fat16_root_first |
1634 | push fat16_root_first |
1635 | push fat16_root_next |
1635 | push fat16_root_next |
1636 | jmp .common1 |
1636 | jmp .common1 |
1637 | .hasebp: |
1637 | .hasebp: |
1638 | mov eax, ERROR_ACCESS_DENIED |
1638 | mov eax, ERROR_ACCESS_DENIED |
1639 | cmp byte [ebp], 0 |
1639 | cmp byte [ebp], 0 |
1640 | jz .ret1 |
1640 | jz .ret1 |
1641 | push ebp |
1641 | push ebp |
1642 | xor ebp, ebp |
1642 | xor ebp, ebp |
1643 | call hd_find_lfn |
1643 | call hd_find_lfn |
1644 | pop esi |
1644 | pop esi |
1645 | jc .notfound0 |
1645 | jc .notfound0 |
1646 | jmp .common0 |
1646 | jmp .common0 |
1647 | .noroot: |
1647 | .noroot: |
1648 | mov eax, ERROR_ACCESS_DENIED |
1648 | mov eax, ERROR_ACCESS_DENIED |
1649 | cmp byte [edi+1], 0 |
1649 | cmp byte [edi+1], 0 |
1650 | jz .ret1 |
1650 | jz .ret1 |
1651 | ; check existence |
1651 | ; check existence |
1652 | mov byte [edi], 0 |
1652 | mov byte [edi], 0 |
1653 | push edi |
1653 | push edi |
1654 | call hd_find_lfn |
1654 | call hd_find_lfn |
1655 | pop esi |
1655 | pop esi |
1656 | mov byte [esi], '/' |
1656 | mov byte [esi], '/' |
1657 | jnc @f |
1657 | jnc @f |
1658 | .notfound0: |
1658 | .notfound0: |
1659 | mov eax, ERROR_FILE_NOT_FOUND |
1659 | mov eax, ERROR_FILE_NOT_FOUND |
1660 | .ret1: |
1660 | .ret1: |
1661 | mov [esp+28], eax |
1661 | mov [esp+28], eax |
1662 | popad |
1662 | popad |
1663 | xor ebx, ebx |
1663 | xor ebx, ebx |
1664 | ret |
1664 | ret |
1665 | @@: |
1665 | @@: |
1666 | inc esi |
1666 | inc esi |
1667 | .common0: |
1667 | .common0: |
1668 | test byte [edi+11], 0x10 ; must be directory |
1668 | test byte [edi+11], 0x10 ; must be directory |
1669 | mov eax, ERROR_ACCESS_DENIED |
1669 | mov eax, ERROR_ACCESS_DENIED |
1670 | jz .ret1 |
1670 | jz .ret1 |
1671 | mov ebp, [edi+20-2] |
1671 | mov ebp, [edi+20-2] |
1672 | mov bp, [edi+26] ; ebp=cluster |
1672 | mov bp, [edi+26] ; ebp=cluster |
1673 | mov eax, ERROR_FAT_TABLE |
1673 | mov eax, ERROR_FAT_TABLE |
1674 | cmp ebp, 2 |
1674 | cmp ebp, 2 |
1675 | jb .ret1 |
1675 | jb .ret1 |
1676 | .pushnotroot: |
1676 | .pushnotroot: |
1677 | push fat_notroot_extend_dir |
1677 | push fat_notroot_extend_dir |
1678 | push fat_notroot_end_write |
1678 | push fat_notroot_end_write |
1679 | push fat_notroot_next_write |
1679 | push fat_notroot_next_write |
1680 | push fat_notroot_begin_write |
1680 | push fat_notroot_begin_write |
1681 | push 0 |
1681 | push 0 |
1682 | push ebp |
1682 | push ebp |
1683 | push fat_notroot_first |
1683 | push fat_notroot_first |
1684 | push fat_notroot_next |
1684 | push fat_notroot_next |
1685 | .common1: |
1685 | .common1: |
1686 | call fat_find_lfn |
1686 | call fat_find_lfn |
1687 | jc .notfound |
1687 | jc .notfound |
1688 | ; found |
1688 | ; found |
1689 | test byte [edi+11], 10h |
1689 | test byte [edi+11], 10h |
1690 | jz .exists_file |
1690 | jz .exists_file |
1691 | ; found directory; if we are creating directory, return OK, |
1691 | ; found directory; if we are creating directory, return OK, |
1692 | ; if we are creating file, say "access denied" |
1692 | ; if we are creating file, say "access denied" |
1693 | add esp, 32 |
1693 | add esp, 32 |
1694 | popad |
1694 | popad |
1695 | test al, al |
1695 | test al, al |
1696 | mov eax, ERROR_ACCESS_DENIED |
1696 | mov eax, ERROR_ACCESS_DENIED |
1697 | jz @f |
1697 | jz @f |
1698 | mov al, 0 |
1698 | mov al, 0 |
1699 | @@: |
1699 | @@: |
1700 | xor ebx, ebx |
1700 | xor ebx, ebx |
1701 | ret |
1701 | ret |
1702 | .exists_file: |
1702 | .exists_file: |
1703 | ; found file; if we are creating directory, return "access denied", |
1703 | ; found file; if we are creating directory, return "access denied", |
1704 | ; if we are creating file, delete existing file and continue |
1704 | ; if we are creating file, delete existing file and continue |
1705 | cmp byte [esp+32+28], 0 |
1705 | cmp byte [esp+32+28], 0 |
1706 | jz @f |
1706 | jz @f |
1707 | add esp, 32 |
1707 | add esp, 32 |
1708 | popad |
1708 | popad |
1709 | mov eax, ERROR_ACCESS_DENIED |
1709 | mov eax, ERROR_ACCESS_DENIED |
1710 | xor ebx, ebx |
1710 | xor ebx, ebx |
1711 | ret |
1711 | ret |
1712 | @@: |
1712 | @@: |
1713 | ; delete FAT chain |
1713 | ; delete FAT chain |
1714 | push edi |
1714 | push edi |
1715 | xor eax, eax |
1715 | xor eax, eax |
1716 | mov dword [edi+28], eax ; zero size |
1716 | mov dword [edi+28], eax ; zero size |
1717 | xor ecx, ecx |
1717 | xor ecx, ecx |
1718 | mov eax, [edi+20-2] |
1718 | mov eax, [edi+20-2] |
1719 | mov ax, [edi+26] |
1719 | mov ax, [edi+26] |
1720 | mov word [edi+20], cx |
1720 | mov word [edi+20], cx |
1721 | mov word [edi+26], cx |
1721 | mov word [edi+26], cx |
1722 | test eax, eax |
1722 | test eax, eax |
1723 | jz .done1 |
1723 | jz .done1 |
1724 | @@: |
1724 | @@: |
1725 | cmp eax, [fatRESERVED] |
1725 | cmp eax, [fatRESERVED] |
1726 | jae .done1 |
1726 | jae .done1 |
1727 | push edx |
1727 | push edx |
1728 | xor edx, edx |
1728 | xor edx, edx |
1729 | call set_FAT |
1729 | call set_FAT |
1730 | mov eax, edx |
1730 | mov eax, edx |
1731 | pop edx |
1731 | pop edx |
1732 | inc ecx |
1732 | inc ecx |
1733 | jmp @b |
1733 | jmp @b |
1734 | .done1: |
1734 | .done1: |
1735 | pop edi |
1735 | pop edi |
1736 | call get_time_for_file |
1736 | call get_time_for_file |
1737 | mov [edi+22], ax |
1737 | mov [edi+22], ax |
1738 | call get_date_for_file |
1738 | call get_date_for_file |
1739 | mov [edi+24], ax |
1739 | mov [edi+24], ax |
1740 | mov [edi+18], ax |
1740 | mov [edi+18], ax |
1741 | or byte [edi+11], 20h ; set 'archive' attribute |
1741 | or byte [edi+11], 20h ; set 'archive' attribute |
1742 | jmp .doit |
1742 | jmp .doit |
1743 | .notfound: |
1743 | .notfound: |
1744 | ; file is not found; generate short name |
1744 | ; file is not found; generate short name |
1745 | call fat_name_is_legal |
1745 | call fat_name_is_legal |
1746 | jc @f |
1746 | jc @f |
1747 | add esp, 32 |
1747 | add esp, 32 |
1748 | popad |
1748 | popad |
1749 | mov eax, ERROR_FILE_NOT_FOUND |
1749 | mov eax, ERROR_FILE_NOT_FOUND |
1750 | xor ebx, ebx |
1750 | xor ebx, ebx |
1751 | ret |
1751 | ret |
1752 | @@: |
1752 | @@: |
1753 | sub esp, 12 |
1753 | sub esp, 12 |
1754 | mov edi, esp |
1754 | mov edi, esp |
1755 | call fat_gen_short_name |
1755 | call fat_gen_short_name |
1756 | .test_short_name_loop: |
1756 | .test_short_name_loop: |
1757 | push esi edi ecx |
1757 | push esi edi ecx |
1758 | mov esi, edi |
1758 | mov esi, edi |
1759 | lea eax, [esp+12+12+8] |
1759 | lea eax, [esp+12+12+8] |
1760 | mov [eax], ebp |
1760 | mov [eax], ebp |
1761 | and dword [eax+4], 0 |
1761 | and dword [eax+4], 0 |
1762 | call dword [eax-4] |
1762 | call dword [eax-4] |
1763 | jc .found |
1763 | jc .found |
1764 | .test_short_name_entry: |
1764 | .test_short_name_entry: |
1765 | cmp byte [edi+11], 0xF |
1765 | cmp byte [edi+11], 0xF |
1766 | jz .test_short_name_cont |
1766 | jz .test_short_name_cont |
1767 | mov ecx, 11 |
1767 | mov ecx, 11 |
1768 | push esi edi |
1768 | push esi edi |
1769 | repz cmpsb |
1769 | repz cmpsb |
1770 | pop edi esi |
1770 | pop edi esi |
1771 | jz .short_name_found |
1771 | jz .short_name_found |
1772 | .test_short_name_cont: |
1772 | .test_short_name_cont: |
1773 | lea eax, [esp+12+12+8] |
1773 | lea eax, [esp+12+12+8] |
1774 | call dword [eax-8] |
1774 | call dword [eax-8] |
1775 | jnc .test_short_name_entry |
1775 | jnc .test_short_name_entry |
1776 | jmp .found |
1776 | jmp .found |
1777 | .short_name_found: |
1777 | .short_name_found: |
1778 | pop ecx edi esi |
1778 | pop ecx edi esi |
1779 | call fat_next_short_name |
1779 | call fat_next_short_name |
1780 | jnc .test_short_name_loop |
1780 | jnc .test_short_name_loop |
1781 | .disk_full: |
1781 | .disk_full: |
1782 | add esp, 12+32 |
1782 | add esp, 12+32 |
1783 | popa |
1783 | popa |
1784 | mov eax, ERROR_DISK_FULL |
1784 | mov eax, ERROR_DISK_FULL |
1785 | xor ebx, ebx |
1785 | xor ebx, ebx |
1786 | ret |
1786 | ret |
1787 | .found: |
1787 | .found: |
1788 | pop ecx edi esi |
1788 | pop ecx edi esi |
1789 | ; now find space in directory |
1789 | ; now find space in directory |
1790 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
1790 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
1791 | mov al, '~' |
1791 | mov al, '~' |
1792 | push ecx edi |
1792 | push ecx edi |
1793 | mov ecx, 8 |
1793 | mov ecx, 8 |
1794 | repnz scasb |
1794 | repnz scasb |
1795 | push 1 |
1795 | push 1 |
1796 | pop eax ; 1 entry |
1796 | pop eax ; 1 entry |
1797 | jnz .notilde |
1797 | jnz .notilde |
1798 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
1798 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
1799 | xor eax, eax |
1799 | xor eax, eax |
1800 | @@: |
1800 | @@: |
1801 | cmp byte [esi], 0 |
1801 | cmp byte [esi], 0 |
1802 | jz @f |
1802 | jz @f |
1803 | inc esi |
1803 | inc esi |
1804 | inc eax |
1804 | inc eax |
1805 | jmp @b |
1805 | jmp @b |
1806 | @@: |
1806 | @@: |
1807 | sub esi, eax |
1807 | sub esi, eax |
1808 | add eax, 12+13 |
1808 | add eax, 12+13 |
1809 | mov ecx, 13 |
1809 | mov ecx, 13 |
1810 | push edx |
1810 | push edx |
1811 | cdq |
1811 | cdq |
1812 | div ecx |
1812 | div ecx |
1813 | pop edx |
1813 | pop edx |
1814 | .notilde: |
1814 | .notilde: |
1815 | push -1 |
1815 | push -1 |
1816 | push -1 |
1816 | push -1 |
1817 | push -1 |
1817 | push -1 |
1818 | ; find |
1818 | ; find |
1819 | xor ecx, ecx |
1819 | xor ecx, ecx |
1820 | push eax |
1820 | push eax |
1821 | lea eax, [esp+16+8+12+8] |
1821 | lea eax, [esp+16+8+12+8] |
1822 | mov [eax], ebp |
1822 | mov [eax], ebp |
1823 | and dword [eax+4], 0 |
1823 | and dword [eax+4], 0 |
1824 | call dword [eax-4] |
1824 | call dword [eax-4] |
1825 | pop eax |
1825 | pop eax |
1826 | jnc .scan_dir |
1826 | jnc .scan_dir |
1827 | .fsfrfe3: |
1827 | .fsfrfe3: |
1828 | add esp, 12+8+12+32 |
1828 | add esp, 12+8+12+32 |
1829 | popad |
1829 | popad |
1830 | mov eax, 11 |
1830 | mov eax, 11 |
1831 | xor ebx, ebx |
1831 | xor ebx, ebx |
1832 | ret |
1832 | ret |
1833 | .scan_dir: |
1833 | .scan_dir: |
1834 | cmp byte [edi], 0 |
1834 | cmp byte [edi], 0 |
1835 | jz .free |
1835 | jz .free |
1836 | cmp byte [edi], 0xE5 |
1836 | cmp byte [edi], 0xE5 |
1837 | jz .free |
1837 | jz .free |
1838 | xor ecx, ecx |
1838 | xor ecx, ecx |
1839 | .scan_cont: |
1839 | .scan_cont: |
1840 | push eax |
1840 | push eax |
1841 | lea eax, [esp+16+8+12+8] |
1841 | lea eax, [esp+16+8+12+8] |
1842 | call dword [eax-8] |
1842 | call dword [eax-8] |
1843 | pop eax |
1843 | pop eax |
1844 | jnc .scan_dir |
1844 | jnc .scan_dir |
1845 | cmp [hd_error], 0 |
1845 | cmp [hd_error], 0 |
1846 | jnz .fsfrfe3 |
1846 | jnz .fsfrfe3 |
1847 | push eax |
1847 | push eax |
1848 | lea eax, [esp+16+8+12+8] |
1848 | lea eax, [esp+16+8+12+8] |
1849 | call dword [eax+20] ; extend directory |
1849 | call dword [eax+20] ; extend directory |
1850 | pop eax |
1850 | pop eax |
1851 | jnc .scan_dir |
1851 | jnc .scan_dir |
1852 | add esp, 12+8+12+32 |
1852 | add esp, 12+8+12+32 |
1853 | popad |
1853 | popad |
1854 | mov eax, ERROR_DISK_FULL |
1854 | mov eax, ERROR_DISK_FULL |
1855 | xor ebx, ebx |
1855 | xor ebx, ebx |
1856 | ret |
1856 | ret |
1857 | .free: |
1857 | .free: |
1858 | test ecx, ecx |
1858 | test ecx, ecx |
1859 | jnz @f |
1859 | jnz @f |
1860 | mov [esp], edi |
1860 | mov [esp], edi |
1861 | mov ecx, [esp+12+8+12+8] |
1861 | mov ecx, [esp+12+8+12+8] |
1862 | mov [esp+4], ecx |
1862 | mov [esp+4], ecx |
1863 | mov ecx, [esp+12+8+12+12] |
1863 | mov ecx, [esp+12+8+12+12] |
1864 | mov [esp+8], ecx |
1864 | mov [esp+8], ecx |
1865 | xor ecx, ecx |
1865 | xor ecx, ecx |
1866 | @@: |
1866 | @@: |
1867 | inc ecx |
1867 | inc ecx |
1868 | cmp ecx, eax |
1868 | cmp ecx, eax |
1869 | jb .scan_cont |
1869 | jb .scan_cont |
1870 | ; found! |
1870 | ; found! |
1871 | ; calculate name checksum |
1871 | ; calculate name checksum |
1872 | push esi ecx |
1872 | push esi ecx |
1873 | mov esi, [esp+8+12] |
1873 | mov esi, [esp+8+12] |
1874 | mov ecx, 11 |
1874 | mov ecx, 11 |
1875 | xor eax, eax |
1875 | xor eax, eax |
1876 | @@: |
1876 | @@: |
1877 | ror al, 1 |
1877 | ror al, 1 |
1878 | add al, [esi] |
1878 | add al, [esi] |
1879 | inc esi |
1879 | inc esi |
1880 | loop @b |
1880 | loop @b |
1881 | pop ecx esi |
1881 | pop ecx esi |
1882 | pop edi |
1882 | pop edi |
1883 | pop dword [esp+8+12+12] |
1883 | pop dword [esp+8+12+12] |
1884 | pop dword [esp+8+12+12] |
1884 | pop dword [esp+8+12+12] |
1885 | ; edi points to first entry in free chunk |
1885 | ; edi points to first entry in free chunk |
1886 | dec ecx |
1886 | dec ecx |
1887 | jz .nolfn |
1887 | jz .nolfn |
1888 | push esi |
1888 | push esi |
1889 | push eax |
1889 | push eax |
1890 | lea eax, [esp+8+8+12+8] |
1890 | lea eax, [esp+8+8+12+8] |
1891 | call dword [eax+8] ; begin write |
1891 | call dword [eax+8] ; begin write |
1892 | mov al, 40h |
1892 | mov al, 40h |
1893 | .writelfn: |
1893 | .writelfn: |
1894 | or al, cl |
1894 | or al, cl |
1895 | mov esi, [esp+4] |
1895 | mov esi, [esp+4] |
1896 | push ecx |
1896 | push ecx |
1897 | dec ecx |
1897 | dec ecx |
1898 | imul ecx, 13 |
1898 | imul ecx, 13 |
1899 | add esi, ecx |
1899 | add esi, ecx |
1900 | stosb |
1900 | stosb |
1901 | mov cl, 5 |
1901 | mov cl, 5 |
1902 | call fs_RamdiskRewrite.read_symbols |
1902 | call fs_RamdiskRewrite.read_symbols |
1903 | mov ax, 0xF |
1903 | mov ax, 0xF |
1904 | stosw |
1904 | stosw |
1905 | mov al, [esp+4] |
1905 | mov al, [esp+4] |
1906 | stosb |
1906 | stosb |
1907 | mov cl, 6 |
1907 | mov cl, 6 |
1908 | call fs_RamdiskRewrite.read_symbols |
1908 | call fs_RamdiskRewrite.read_symbols |
1909 | xor eax, eax |
1909 | xor eax, eax |
1910 | stosw |
1910 | stosw |
1911 | mov cl, 2 |
1911 | mov cl, 2 |
1912 | call fs_RamdiskRewrite.read_symbols |
1912 | call fs_RamdiskRewrite.read_symbols |
1913 | pop ecx |
1913 | pop ecx |
1914 | lea eax, [esp+8+8+12+8] |
1914 | lea eax, [esp+8+8+12+8] |
1915 | call dword [eax+12] ; next write |
1915 | call dword [eax+12] ; next write |
1916 | xor eax, eax |
1916 | xor eax, eax |
1917 | loop .writelfn |
1917 | loop .writelfn |
1918 | pop eax |
1918 | pop eax |
1919 | pop esi |
1919 | pop esi |
1920 | ; lea eax, [esp+8+12+8] |
1920 | ; lea eax, [esp+8+12+8] |
1921 | ; call dword [eax+16] ; end write |
1921 | ; call dword [eax+16] ; end write |
1922 | .nolfn: |
1922 | .nolfn: |
1923 | xchg esi, [esp] |
1923 | xchg esi, [esp] |
1924 | mov ecx, 11 |
1924 | mov ecx, 11 |
1925 | rep movsb |
1925 | rep movsb |
1926 | mov word [edi], 20h ; attributes |
1926 | mov word [edi], 20h ; attributes |
1927 | sub edi, 11 |
1927 | sub edi, 11 |
1928 | pop esi ecx |
1928 | pop esi ecx |
1929 | add esp, 12 |
1929 | add esp, 12 |
1930 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
1930 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
1931 | call get_time_for_file |
1931 | call get_time_for_file |
1932 | mov [edi+14], ax ; creation time |
1932 | mov [edi+14], ax ; creation time |
1933 | mov [edi+22], ax ; last write time |
1933 | mov [edi+22], ax ; last write time |
1934 | call get_date_for_file |
1934 | call get_date_for_file |
1935 | mov [edi+16], ax ; creation date |
1935 | mov [edi+16], ax ; creation date |
1936 | mov [edi+24], ax ; last write date |
1936 | mov [edi+24], ax ; last write date |
1937 | mov [edi+18], ax ; last access date |
1937 | mov [edi+18], ax ; last access date |
1938 | xor ecx, ecx |
1938 | xor ecx, ecx |
1939 | mov word [edi+20], cx ; high word of cluster |
1939 | mov word [edi+20], cx ; high word of cluster |
1940 | mov word [edi+26], cx ; low word of cluster - to be filled |
1940 | mov word [edi+26], cx ; low word of cluster - to be filled |
1941 | mov dword [edi+28], ecx ; file size - to be filled |
1941 | mov dword [edi+28], ecx ; file size - to be filled |
1942 | cmp byte [esp+32+28], cl |
1942 | cmp byte [esp+32+28], cl |
1943 | jz .doit |
1943 | jz .doit |
1944 | ; create directory |
1944 | ; create directory |
1945 | mov byte [edi+11], 10h ; attributes: folder |
1945 | mov byte [edi+11], 10h ; attributes: folder |
1946 | mov edx, edi |
1946 | mov edx, edi |
1947 | lea eax, [esp+8] |
1947 | lea eax, [esp+8] |
1948 | call dword [eax+16] ; flush directory |
1948 | call dword [eax+16] ; flush directory |
1949 | push ecx |
1949 | push ecx |
1950 | mov ecx, [SECTORS_PER_CLUSTER] |
1950 | mov ecx, [SECTORS_PER_CLUSTER] |
1951 | shl ecx, 9 |
1951 | shl ecx, 9 |
1952 | jmp .doit2 |
1952 | jmp .doit2 |
1953 | .doit: |
1953 | .doit: |
1954 | lea eax, [esp+8] |
1954 | lea eax, [esp+8] |
1955 | call dword [eax+16] ; flush directory |
1955 | call dword [eax+16] ; flush directory |
1956 | push ecx |
1956 | push ecx |
1957 | mov ecx, [esp+4+32+24] |
1957 | mov ecx, [esp+4+32+24] |
1958 | .doit2: |
1958 | .doit2: |
1959 | push ecx |
1959 | push ecx |
1960 | push edi |
1960 | push edi |
1961 | mov esi, edx |
1961 | mov esi, edx |
1962 | test ecx, ecx |
1962 | test ecx, ecx |
1963 | jz .done |
1963 | jz .done |
1964 | call get_free_FAT |
1964 | call get_free_FAT |
1965 | jc .diskfull |
1965 | jc .diskfull |
1966 | push eax |
1966 | push eax |
1967 | mov [edi+26], ax |
1967 | mov [edi+26], ax |
1968 | shr eax, 16 |
1968 | shr eax, 16 |
1969 | mov [edi+20], ax |
1969 | mov [edi+20], ax |
1970 | lea eax, [esp+16+8] |
1970 | lea eax, [esp+16+8] |
1971 | call dword [eax+16] ; flush directory |
1971 | call dword [eax+16] ; flush directory |
1972 | pop eax |
1972 | pop eax |
1973 | push edx |
1973 | push edx |
1974 | mov edx, [fatEND] |
1974 | mov edx, [fatEND] |
1975 | call set_FAT |
1975 | call set_FAT |
1976 | pop edx |
1976 | pop edx |
1977 | .write_cluster: |
1977 | .write_cluster: |
1978 | push eax |
1978 | push eax |
1979 | dec eax |
1979 | dec eax |
1980 | dec eax |
1980 | dec eax |
1981 | mov ebp, [SECTORS_PER_CLUSTER] |
1981 | mov ebp, [SECTORS_PER_CLUSTER] |
1982 | imul eax, ebp |
1982 | imul eax, ebp |
1983 | add eax, [DATA_START] |
1983 | add eax, [DATA_START] |
1984 | ; write data |
1984 | ; write data |
1985 | .write_sector: |
1985 | .write_sector: |
1986 | cmp byte [esp+16+32+28], 0 |
1986 | cmp byte [esp+16+32+28], 0 |
1987 | jnz .writedir |
1987 | jnz .writedir |
1988 | mov ecx, 512 |
1988 | mov ecx, 512 |
1989 | cmp dword [esp+8], ecx |
1989 | cmp dword [esp+8], ecx |
1990 | jb .writeshort |
1990 | jb .writeshort |
1991 | ; we can write directly from given buffer |
1991 | ; we can write directly from given buffer |
1992 | mov ebx, esi |
1992 | mov ebx, esi |
1993 | add esi, ecx |
1993 | add esi, ecx |
1994 | jmp .writecommon |
1994 | jmp .writecommon |
1995 | .writeshort: |
1995 | .writeshort: |
1996 | mov ecx, [esp+8] |
1996 | mov ecx, [esp+8] |
1997 | push ecx |
1997 | push ecx |
1998 | mov edi, buffer |
1998 | mov edi, buffer |
1999 | mov ebx, edi |
1999 | mov ebx, edi |
2000 | rep movsb |
2000 | rep movsb |
2001 | .writedircont: |
2001 | .writedircont: |
2002 | mov ecx, buffer+0x200 |
2002 | mov ecx, buffer+0x200 |
2003 | sub ecx, edi |
2003 | sub ecx, edi |
2004 | push eax |
2004 | push eax |
2005 | xor eax, eax |
2005 | xor eax, eax |
2006 | rep stosb |
2006 | rep stosb |
2007 | pop eax |
2007 | pop eax |
2008 | pop ecx |
2008 | pop ecx |
2009 | .writecommon: |
2009 | .writecommon: |
2010 | call hd_write |
2010 | call hd_write |
2011 | cmp [hd_error], 0 |
2011 | cmp [hd_error], 0 |
2012 | jnz .writeerr |
2012 | jnz .writeerr |
2013 | inc eax |
2013 | inc eax |
2014 | sub dword [esp+8], ecx |
2014 | sub dword [esp+8], ecx |
2015 | jz .writedone |
2015 | jz .writedone |
2016 | dec ebp |
2016 | dec ebp |
2017 | jnz .write_sector |
2017 | jnz .write_sector |
2018 | ; allocate new cluster |
2018 | ; allocate new cluster |
2019 | pop eax |
2019 | pop eax |
2020 | mov ecx, eax |
2020 | mov ecx, eax |
2021 | call get_free_FAT |
2021 | call get_free_FAT |
2022 | jc .diskfull |
2022 | jc .diskfull |
2023 | push edx |
2023 | push edx |
2024 | mov edx, [fatEND] |
2024 | mov edx, [fatEND] |
2025 | call set_FAT |
2025 | call set_FAT |
2026 | xchg eax, ecx |
2026 | xchg eax, ecx |
2027 | mov edx, ecx |
2027 | mov edx, ecx |
2028 | call set_FAT |
2028 | call set_FAT |
2029 | pop edx |
2029 | pop edx |
2030 | xchg eax, ecx |
2030 | xchg eax, ecx |
2031 | jmp .write_cluster |
2031 | jmp .write_cluster |
2032 | .diskfull: |
2032 | .diskfull: |
2033 | mov eax, ERROR_DISK_FULL |
2033 | mov eax, ERROR_DISK_FULL |
2034 | jmp .ret |
2034 | jmp .ret |
2035 | .writeerr: |
2035 | .writeerr: |
2036 | pop eax |
2036 | pop eax |
2037 | sub esi, ecx |
2037 | sub esi, ecx |
2038 | mov eax, 11 |
2038 | mov eax, 11 |
2039 | jmp .ret |
2039 | jmp .ret |
2040 | .writedone: |
2040 | .writedone: |
2041 | pop eax |
2041 | pop eax |
2042 | .done: |
2042 | .done: |
2043 | xor eax, eax |
2043 | xor eax, eax |
2044 | .ret: |
2044 | .ret: |
2045 | pop edi ecx |
2045 | pop edi ecx |
2046 | mov ebx, esi |
2046 | mov ebx, esi |
2047 | sub ebx, edx |
2047 | sub ebx, edx |
2048 | pop ebp |
2048 | pop ebp |
2049 | mov [esp+32+28], eax |
2049 | mov [esp+32+28], eax |
2050 | lea eax, [esp+8] |
2050 | lea eax, [esp+8] |
2051 | call dword [eax+8] |
2051 | call dword [eax+8] |
2052 | mov [edi+28], ebx |
2052 | mov [edi+28], ebx |
2053 | call dword [eax+16] |
2053 | call dword [eax+16] |
2054 | mov [esp+32+16], ebx |
2054 | mov [esp+32+16], ebx |
2055 | lea eax, [ebx+511] |
2055 | lea eax, [ebx+511] |
2056 | shr eax, 9 |
2056 | shr eax, 9 |
2057 | mov ecx, [SECTORS_PER_CLUSTER] |
2057 | mov ecx, [SECTORS_PER_CLUSTER] |
2058 | lea eax, [eax+ecx-1] |
2058 | lea eax, [eax+ecx-1] |
2059 | xor edx, edx |
2059 | xor edx, edx |
2060 | div ecx |
2060 | div ecx |
2061 | mov ecx, ebp |
2061 | mov ecx, ebp |
2062 | sub ecx, eax |
2062 | sub ecx, eax |
2063 | call add_disk_free_space |
2063 | call add_disk_free_space |
2064 | add esp, 32 |
2064 | add esp, 32 |
2065 | call update_disk |
2065 | call update_disk |
2066 | popad |
2066 | popad |
2067 | ret |
2067 | ret |
2068 | .writedir: |
2068 | .writedir: |
2069 | push 512 |
2069 | push 512 |
2070 | mov edi, buffer |
2070 | mov edi, buffer |
2071 | mov ebx, edi |
2071 | mov ebx, edi |
2072 | mov ecx, [SECTORS_PER_CLUSTER] |
2072 | mov ecx, [SECTORS_PER_CLUSTER] |
2073 | shl ecx, 9 |
2073 | shl ecx, 9 |
2074 | cmp ecx, [esp+12] |
2074 | cmp ecx, [esp+12] |
2075 | jnz .writedircont |
2075 | jnz .writedircont |
2076 | dec dword [esp+16] |
2076 | dec dword [esp+16] |
2077 | push esi |
2077 | push esi |
2078 | mov ecx, 32/4 |
2078 | mov ecx, 32/4 |
2079 | rep movsd |
2079 | rep movsd |
2080 | pop esi |
2080 | pop esi |
2081 | mov dword [edi-32], '. ' |
2081 | mov dword [edi-32], '. ' |
2082 | mov dword [edi-32+4], ' ' |
2082 | mov dword [edi-32+4], ' ' |
2083 | mov dword [edi-32+8], ' ' |
2083 | mov dword [edi-32+8], ' ' |
2084 | mov byte [edi-32+11], 10h |
2084 | mov byte [edi-32+11], 10h |
2085 | push esi |
2085 | push esi |
2086 | mov ecx, 32/4 |
2086 | mov ecx, 32/4 |
2087 | rep movsd |
2087 | rep movsd |
2088 | pop esi |
2088 | pop esi |
2089 | mov dword [edi-32], '.. ' |
2089 | mov dword [edi-32], '.. ' |
2090 | mov dword [edi-32+4], ' ' |
2090 | mov dword [edi-32+4], ' ' |
2091 | mov dword [edi-32+8], ' ' |
2091 | mov dword [edi-32+8], ' ' |
2092 | mov byte [edi-32+11], 10h |
2092 | mov byte [edi-32+11], 10h |
2093 | mov ecx, [esp+20+8] |
2093 | mov ecx, [esp+20+8] |
2094 | cmp ecx, [ROOT_CLUSTER] |
2094 | cmp ecx, [ROOT_CLUSTER] |
2095 | jnz @f |
2095 | jnz @f |
2096 | xor ecx, ecx |
2096 | xor ecx, ecx |
2097 | @@: |
2097 | @@: |
2098 | mov word [edi-32+26], cx |
2098 | mov word [edi-32+26], cx |
2099 | shr ecx, 16 |
2099 | shr ecx, 16 |
2100 | mov [edi-32+20], cx |
2100 | mov [edi-32+20], cx |
2101 | jmp .writedircont |
2101 | jmp .writedircont |
2102 | 2102 | ||
2103 | ;---------------------------------------------------------------- |
2103 | ;---------------------------------------------------------------- |
2104 | ; |
2104 | ; |
2105 | ; fs_HdWrite - LFN variant for writing to hard disk |
2105 | ; fs_HdWrite - LFN variant for writing to hard disk |
2106 | ; |
2106 | ; |
2107 | ; esi points to filename |
2107 | ; esi points to filename |
2108 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
2108 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
2109 | ; may be ebx=0 - start from first byte |
2109 | ; may be ebx=0 - start from first byte |
2110 | ; ecx number of bytes to write, 0+ |
2110 | ; ecx number of bytes to write, 0+ |
2111 | ; edx mem location to data |
2111 | ; edx mem location to data |
2112 | ; |
2112 | ; |
2113 | ; ret ebx = bytes written (maybe 0) |
2113 | ; ret ebx = bytes written (maybe 0) |
2114 | ; eax = 0 ok write or other = errormsg |
2114 | ; eax = 0 ok write or other = errormsg |
2115 | ; |
2115 | ; |
2116 | ;-------------------------------------------------------------- |
2116 | ;-------------------------------------------------------------- |
2117 | fs_HdWrite.access_denied: |
2117 | fs_HdWrite.access_denied: |
2118 | push ERROR_ACCESS_DENIED |
2118 | push ERROR_ACCESS_DENIED |
2119 | fs_HdWrite.ret0: |
2119 | fs_HdWrite.ret0: |
2120 | pop eax |
2120 | pop eax |
2121 | xor ebx, ebx |
2121 | xor ebx, ebx |
2122 | ret |
2122 | ret |
2123 | 2123 | ||
2124 | fs_HdWrite.ret11: |
2124 | fs_HdWrite.ret11: |
2125 | push 11 |
2125 | push 11 |
2126 | jmp fs_HdWrite.ret0 |
2126 | jmp fs_HdWrite.ret0 |
2127 | 2127 | ||
2128 | fs_HdWrite: |
2128 | fs_HdWrite: |
2129 | cmp [fs_type], 1 |
2129 | cmp [fs_type], 1 |
2130 | jz ntfs_HdWrite |
2130 | jz ntfs_HdWrite |
2131 | cmp [fs_type], 2 |
2131 | cmp [fs_type], 2 |
2132 | jz ext2_HdWrite |
2132 | jz ext2_HdWrite |
2133 | cmp [fs_type], 16 |
2133 | cmp [fs_type], 16 |
2134 | jz @f |
2134 | jz @f |
2135 | cmp [fs_type], 32 |
2135 | cmp [fs_type], 32 |
2136 | jz @f |
2136 | jz @f |
2137 | push ERROR_UNKNOWN_FS |
2137 | push ERROR_UNKNOWN_FS |
2138 | jmp .ret0 |
2138 | jmp .ret0 |
2139 | @@: |
2139 | @@: |
2140 | cmp byte [esi], 0 |
2140 | cmp byte [esi], 0 |
2141 | jz .access_denied |
2141 | jz .access_denied |
2142 | pushad |
2142 | pushad |
2143 | call hd_find_lfn |
2143 | call hd_find_lfn |
2144 | pushfd |
2144 | pushfd |
2145 | cmp [hd_error], 0 |
2145 | cmp [hd_error], 0 |
2146 | jz @f |
2146 | jz @f |
2147 | popfd |
2147 | popfd |
2148 | popad |
2148 | popad |
2149 | push 11 |
2149 | push 11 |
2150 | jmp .ret0 |
2150 | jmp .ret0 |
2151 | @@: |
2151 | @@: |
2152 | popfd |
2152 | popfd |
2153 | jnc .found |
2153 | jnc .found |
2154 | popad |
2154 | popad |
2155 | push ERROR_FILE_NOT_FOUND |
2155 | push ERROR_FILE_NOT_FOUND |
2156 | jmp .ret0 |
2156 | jmp .ret0 |
2157 | .found: |
2157 | .found: |
2158 | ; FAT does not support files larger than 4GB |
2158 | ; FAT does not support files larger than 4GB |
2159 | test ebx, ebx |
2159 | test ebx, ebx |
2160 | jz .l1 |
2160 | jz .l1 |
2161 | cmp dword [ebx+4], 0 |
2161 | cmp dword [ebx+4], 0 |
2162 | jz @f |
2162 | jz @f |
2163 | .eof: |
2163 | .eof: |
2164 | popad |
2164 | popad |
2165 | push ERROR_END_OF_FILE |
2165 | push ERROR_END_OF_FILE |
2166 | jmp .ret0 |
2166 | jmp .ret0 |
2167 | @@: |
2167 | @@: |
2168 | mov ebx, [ebx] |
2168 | mov ebx, [ebx] |
2169 | .l1: |
2169 | .l1: |
2170 | ; now edi points to direntry, ebx=start byte to write, |
2170 | ; now edi points to direntry, ebx=start byte to write, |
2171 | ; ecx=number of bytes to write, edx=data pointer |
2171 | ; ecx=number of bytes to write, edx=data pointer |
2172 | 2172 | ||
2173 | ; extend file if needed |
2173 | ; extend file if needed |
2174 | add ecx, ebx |
2174 | add ecx, ebx |
2175 | jc .eof ; FAT does not support files larger than 4GB |
2175 | jc .eof ; FAT does not support files larger than 4GB |
2176 | push eax ; save directory sector |
2176 | push eax ; save directory sector |
2177 | push 0 ; return value=0 |
2177 | push 0 ; return value=0 |
2178 | 2178 | ||
2179 | call get_time_for_file |
2179 | call get_time_for_file |
2180 | mov [edi+22], ax ; last write time |
2180 | mov [edi+22], ax ; last write time |
2181 | call get_date_for_file |
2181 | call get_date_for_file |
2182 | mov [edi+24], ax ; last write date |
2182 | mov [edi+24], ax ; last write date |
2183 | mov [edi+18], ax ; last access date |
2183 | mov [edi+18], ax ; last access date |
2184 | 2184 | ||
2185 | push dword [edi+28] ; save current file size |
2185 | push dword [edi+28] ; save current file size |
2186 | cmp ecx, [edi+28] |
2186 | cmp ecx, [edi+28] |
2187 | jbe .length_ok |
2187 | jbe .length_ok |
2188 | cmp ecx, ebx |
2188 | cmp ecx, ebx |
2189 | jz .length_ok |
2189 | jz .length_ok |
2190 | call hd_extend_file |
2190 | call hd_extend_file |
2191 | jnc .length_ok |
2191 | jnc .length_ok |
2192 | mov [esp+4], eax |
2192 | mov [esp+4], eax |
2193 | ; hd_extend_file can return three error codes: FAT table error, device error or disk full. |
2193 | ; hd_extend_file can return three error codes: FAT table error, device error or disk full. |
2194 | ; First two cases are fatal errors, in third case we may write some data |
2194 | ; First two cases are fatal errors, in third case we may write some data |
2195 | cmp al, ERROR_DISK_FULL |
2195 | cmp al, ERROR_DISK_FULL |
2196 | jz .disk_full |
2196 | jz .disk_full |
2197 | pop eax |
2197 | pop eax |
2198 | pop eax |
2198 | pop eax |
2199 | mov [esp+4+28], eax |
2199 | mov [esp+4+28], eax |
2200 | pop eax |
2200 | pop eax |
2201 | popad |
2201 | popad |
2202 | xor ebx, ebx |
2202 | xor ebx, ebx |
2203 | ret |
2203 | ret |
2204 | .disk_full: |
2204 | .disk_full: |
2205 | ; correct number of bytes to write |
2205 | ; correct number of bytes to write |
2206 | mov ecx, [edi+28] |
2206 | mov ecx, [edi+28] |
2207 | cmp ecx, ebx |
2207 | cmp ecx, ebx |
2208 | ja .length_ok |
2208 | ja .length_ok |
2209 | .ret: |
2209 | .ret: |
2210 | call update_disk |
2210 | call update_disk |
2211 | cmp [hd_error], 0 |
2211 | cmp [hd_error], 0 |
2212 | jz @f |
2212 | jz @f |
2213 | mov byte [esp+4], 11 |
2213 | mov byte [esp+4], 11 |
2214 | @@: |
2214 | @@: |
2215 | pop eax |
2215 | pop eax |
2216 | pop eax |
2216 | pop eax |
2217 | mov [esp+4+28], eax ; eax=return value |
2217 | mov [esp+4+28], eax ; eax=return value |
2218 | pop eax |
2218 | pop eax |
2219 | sub edx, [esp+20] |
2219 | sub edx, [esp+20] |
2220 | mov [esp+16], edx ; ebx=number of written bytes |
2220 | mov [esp+16], edx ; ebx=number of written bytes |
2221 | popad |
2221 | popad |
2222 | ret |
2222 | ret |
2223 | .length_ok: |
2223 | .length_ok: |
2224 | mov esi, [edi+28] |
2224 | mov esi, [edi+28] |
2225 | mov eax, [edi+20-2] |
2225 | mov eax, [edi+20-2] |
2226 | mov ax, [edi+26] |
2226 | mov ax, [edi+26] |
2227 | mov edi, eax ; edi=current cluster |
2227 | mov edi, eax ; edi=current cluster |
2228 | xor ebp, ebp ; ebp=current sector in cluster |
2228 | xor ebp, ebp ; ebp=current sector in cluster |
2229 | ; save directory |
2229 | ; save directory |
2230 | mov eax, [esp+8] |
2230 | mov eax, [esp+8] |
2231 | push ebx |
2231 | push ebx |
2232 | mov ebx, buffer |
2232 | mov ebx, buffer |
2233 | call hd_write |
2233 | call hd_write |
2234 | pop ebx |
2234 | pop ebx |
2235 | cmp [hd_error], 0 |
2235 | cmp [hd_error], 0 |
2236 | jz @f |
2236 | jz @f |
2237 | .device_err: |
2237 | .device_err: |
2238 | mov byte [esp+4], 11 |
2238 | mov byte [esp+4], 11 |
2239 | jmp .ret |
2239 | jmp .ret |
2240 | @@: |
2240 | @@: |
2241 | 2241 | ||
2242 | ; now ebx=start pos, ecx=end pos, both lie inside file |
2242 | ; now ebx=start pos, ecx=end pos, both lie inside file |
2243 | sub ecx, ebx |
2243 | sub ecx, ebx |
2244 | jz .ret |
2244 | jz .ret |
2245 | .write_loop: |
2245 | .write_loop: |
2246 | ; skip unmodified sectors |
2246 | ; skip unmodified sectors |
2247 | cmp dword [esp], 0x200 |
2247 | cmp dword [esp], 0x200 |
2248 | jb .modify |
2248 | jb .modify |
2249 | sub ebx, 0x200 |
2249 | sub ebx, 0x200 |
2250 | jae .skip |
2250 | jae .skip |
2251 | add ebx, 0x200 |
2251 | add ebx, 0x200 |
2252 | .modify: |
2252 | .modify: |
2253 | ; get length of data in current sector |
2253 | ; get length of data in current sector |
2254 | push ecx |
2254 | push ecx |
2255 | sub ebx, 0x200 |
2255 | sub ebx, 0x200 |
2256 | jb .hasdata |
2256 | jb .hasdata |
2257 | neg ebx |
2257 | neg ebx |
2258 | xor ecx, ecx |
2258 | xor ecx, ecx |
2259 | jmp @f |
2259 | jmp @f |
2260 | .hasdata: |
2260 | .hasdata: |
2261 | neg ebx |
2261 | neg ebx |
2262 | cmp ecx, ebx |
2262 | cmp ecx, ebx |
2263 | jbe @f |
2263 | jbe @f |
2264 | mov ecx, ebx |
2264 | mov ecx, ebx |
2265 | @@: |
2265 | @@: |
2266 | ; get current sector number |
2266 | ; get current sector number |
2267 | mov eax, edi |
2267 | mov eax, edi |
2268 | dec eax |
2268 | dec eax |
2269 | dec eax |
2269 | dec eax |
2270 | imul eax, [SECTORS_PER_CLUSTER] |
2270 | imul eax, [SECTORS_PER_CLUSTER] |
2271 | add eax, [DATA_START] |
2271 | add eax, [DATA_START] |
2272 | add eax, ebp |
2272 | add eax, ebp |
2273 | ; load sector if needed |
2273 | ; load sector if needed |
2274 | cmp dword [esp+4], 0 ; we don't need to read uninitialized data |
2274 | cmp dword [esp+4], 0 ; we don't need to read uninitialized data |
2275 | jz .noread |
2275 | jz .noread |
2276 | cmp ecx, 0x200 ; we don't need to read sector if it is fully rewritten |
2276 | cmp ecx, 0x200 ; we don't need to read sector if it is fully rewritten |
2277 | jz .noread |
2277 | jz .noread |
2278 | cmp ecx, esi ; (same for the last sector) |
2278 | cmp ecx, esi ; (same for the last sector) |
2279 | jz .noread |
2279 | jz .noread |
2280 | push ebx |
2280 | push ebx |
2281 | mov ebx, buffer |
2281 | mov ebx, buffer |
2282 | call hd_read |
2282 | call hd_read |
2283 | pop ebx |
2283 | pop ebx |
2284 | cmp [hd_error], 0 |
2284 | cmp [hd_error], 0 |
2285 | jz @f |
2285 | jz @f |
2286 | .device_err2: |
2286 | .device_err2: |
2287 | pop ecx |
2287 | pop ecx |
2288 | jmp .device_err |
2288 | jmp .device_err |
2289 | @@: |
2289 | @@: |
2290 | .noread: |
2290 | .noread: |
2291 | ; zero uninitialized data if file was extended (because hd_extend_file does not this) |
2291 | ; zero uninitialized data if file was extended (because hd_extend_file does not this) |
2292 | push eax ecx edi |
2292 | push eax ecx edi |
2293 | xor eax, eax |
2293 | xor eax, eax |
2294 | mov ecx, 0x200 |
2294 | mov ecx, 0x200 |
2295 | sub ecx, [esp+4+12] |
2295 | sub ecx, [esp+4+12] |
2296 | jbe @f |
2296 | jbe @f |
2297 | mov edi, buffer |
2297 | mov edi, buffer |
2298 | add edi, [esp+4+12] |
2298 | add edi, [esp+4+12] |
2299 | rep stosb |
2299 | rep stosb |
2300 | @@: |
2300 | @@: |
2301 | ; zero uninitialized data in the last sector |
2301 | ; zero uninitialized data in the last sector |
2302 | mov ecx, 0x200 |
2302 | mov ecx, 0x200 |
2303 | sub ecx, esi |
2303 | sub ecx, esi |
2304 | jbe @f |
2304 | jbe @f |
2305 | mov edi, buffer |
2305 | mov edi, buffer |
2306 | add edi, esi |
2306 | add edi, esi |
2307 | rep stosb |
2307 | rep stosb |
2308 | @@: |
2308 | @@: |
2309 | pop edi ecx |
2309 | pop edi ecx |
2310 | ; copy new data |
2310 | ; copy new data |
2311 | mov eax, edx |
2311 | mov eax, edx |
2312 | neg ebx |
2312 | neg ebx |
2313 | jecxz @f |
2313 | jecxz @f |
2314 | add ebx, buffer+0x200 |
2314 | add ebx, buffer+0x200 |
2315 | call memmove |
2315 | call memmove |
2316 | xor ebx, ebx |
2316 | xor ebx, ebx |
2317 | @@: |
2317 | @@: |
2318 | pop eax |
2318 | pop eax |
2319 | ; save sector |
2319 | ; save sector |
2320 | push ebx |
2320 | push ebx |
2321 | mov ebx, buffer |
2321 | mov ebx, buffer |
2322 | call hd_write |
2322 | call hd_write |
2323 | pop ebx |
2323 | pop ebx |
2324 | cmp [hd_error], 0 |
2324 | cmp [hd_error], 0 |
2325 | jnz .device_err2 |
2325 | jnz .device_err2 |
2326 | add edx, ecx |
2326 | add edx, ecx |
2327 | sub [esp], ecx |
2327 | sub [esp], ecx |
2328 | pop ecx |
2328 | pop ecx |
2329 | jz .ret |
2329 | jz .ret |
2330 | .skip: |
2330 | .skip: |
2331 | ; next sector |
2331 | ; next sector |
2332 | inc ebp |
2332 | inc ebp |
2333 | cmp ebp, [SECTORS_PER_CLUSTER] |
2333 | cmp ebp, [SECTORS_PER_CLUSTER] |
2334 | jb @f |
2334 | jb @f |
2335 | xor ebp, ebp |
2335 | xor ebp, ebp |
2336 | mov eax, edi |
2336 | mov eax, edi |
2337 | call get_FAT |
2337 | call get_FAT |
2338 | mov edi, eax |
2338 | mov edi, eax |
2339 | cmp [hd_error], 0 |
2339 | cmp [hd_error], 0 |
2340 | jnz .device_err |
2340 | jnz .device_err |
2341 | @@: |
2341 | @@: |
2342 | sub esi, 0x200 |
2342 | sub esi, 0x200 |
2343 | jae @f |
2343 | jae @f |
2344 | xor esi, esi |
2344 | xor esi, esi |
2345 | @@: |
2345 | @@: |
2346 | sub dword [esp], 0x200 |
2346 | sub dword [esp], 0x200 |
2347 | jae @f |
2347 | jae @f |
2348 | and dword [esp], 0 |
2348 | and dword [esp], 0 |
2349 | @@: jmp .write_loop |
2349 | @@: jmp .write_loop |
2350 | 2350 | ||
2351 | hd_extend_file.zero_size: |
2351 | hd_extend_file.zero_size: |
2352 | xor eax, eax |
2352 | xor eax, eax |
2353 | jmp hd_extend_file.start_extend |
2353 | jmp hd_extend_file.start_extend |
2354 | 2354 | ||
2355 | ; extends file on hd to given size (new data area is undefined) |
2355 | ; extends file on hd to given size (new data area is undefined) |
2356 | ; in: edi->direntry, ecx=new size |
2356 | ; in: edi->direntry, ecx=new size |
2357 | ; out: CF=0 => OK, eax=0 |
2357 | ; out: CF=0 => OK, eax=0 |
2358 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL or 11) |
2358 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL or 11) |
2359 | hd_extend_file: |
2359 | hd_extend_file: |
2360 | push ebp |
2360 | push ebp |
2361 | mov ebp, [SECTORS_PER_CLUSTER] |
2361 | mov ebp, [SECTORS_PER_CLUSTER] |
2362 | imul ebp, [BYTES_PER_SECTOR] |
2362 | imul ebp, [BYTES_PER_SECTOR] |
2363 | push ecx |
2363 | push ecx |
2364 | ; find the last cluster of file |
2364 | ; find the last cluster of file |
2365 | mov eax, [edi+20-2] |
2365 | mov eax, [edi+20-2] |
2366 | mov ax, [edi+26] |
2366 | mov ax, [edi+26] |
2367 | mov ecx, [edi+28] |
2367 | mov ecx, [edi+28] |
2368 | jecxz .zero_size |
2368 | jecxz .zero_size |
2369 | .last_loop: |
2369 | .last_loop: |
2370 | sub ecx, ebp |
2370 | sub ecx, ebp |
2371 | jbe .last_found |
2371 | jbe .last_found |
2372 | call get_FAT |
2372 | call get_FAT |
2373 | cmp [hd_error], 0 |
2373 | cmp [hd_error], 0 |
2374 | jz @f |
2374 | jz @f |
2375 | .device_err: |
2375 | .device_err: |
2376 | pop ecx |
2376 | pop ecx |
2377 | .device_err2: |
2377 | .device_err2: |
2378 | pop ebp |
2378 | pop ebp |
2379 | push 11 |
2379 | push 11 |
2380 | .ret_err: |
2380 | .ret_err: |
2381 | pop eax |
2381 | pop eax |
2382 | stc |
2382 | stc |
2383 | ret |
2383 | ret |
2384 | @@: |
2384 | @@: |
2385 | cmp eax, 2 |
2385 | cmp eax, 2 |
2386 | jb .fat_err |
2386 | jb .fat_err |
2387 | cmp eax, [fatRESERVED] |
2387 | cmp eax, [fatRESERVED] |
2388 | jb .last_loop |
2388 | jb .last_loop |
2389 | .fat_err: |
2389 | .fat_err: |
2390 | pop ecx ebp |
2390 | pop ecx ebp |
2391 | push ERROR_FAT_TABLE |
2391 | push ERROR_FAT_TABLE |
2392 | jmp .ret_err |
2392 | jmp .ret_err |
2393 | .last_found: |
2393 | .last_found: |
2394 | push eax |
2394 | push eax |
2395 | call get_FAT |
2395 | call get_FAT |
2396 | cmp [hd_error], 0 |
2396 | cmp [hd_error], 0 |
2397 | jz @f |
2397 | jz @f |
2398 | pop eax |
2398 | pop eax |
2399 | jmp .device_err |
2399 | jmp .device_err |
2400 | @@: |
2400 | @@: |
2401 | cmp eax, [fatRESERVED] |
2401 | cmp eax, [fatRESERVED] |
2402 | pop eax |
2402 | pop eax |
2403 | jb .fat_err |
2403 | jb .fat_err |
2404 | ; set length to full number of clusters |
2404 | ; set length to full number of clusters |
2405 | sub [edi+28], ecx |
2405 | sub [edi+28], ecx |
2406 | .start_extend: |
2406 | .start_extend: |
2407 | pop ecx |
2407 | pop ecx |
2408 | ; now do extend |
2408 | ; now do extend |
2409 | push edx |
2409 | push edx |
2410 | mov edx, 2 ; start scan from cluster 2 |
2410 | mov edx, 2 ; start scan from cluster 2 |
2411 | .extend_loop: |
2411 | .extend_loop: |
2412 | cmp [edi+28], ecx |
2412 | cmp [edi+28], ecx |
2413 | jae .extend_done |
2413 | jae .extend_done |
2414 | ; add new cluster |
2414 | ; add new cluster |
2415 | push eax |
2415 | push eax |
2416 | call get_free_FAT |
2416 | call get_free_FAT |
2417 | jc .disk_full |
2417 | jc .disk_full |
2418 | mov edx, [fatEND] |
2418 | mov edx, [fatEND] |
2419 | call set_FAT |
2419 | call set_FAT |
2420 | mov edx, eax |
2420 | mov edx, eax |
2421 | pop eax |
2421 | pop eax |
2422 | test eax, eax |
2422 | test eax, eax |
2423 | jz .first_cluster |
2423 | jz .first_cluster |
2424 | push edx |
2424 | push edx |
2425 | call set_FAT |
2425 | call set_FAT |
2426 | pop edx |
2426 | pop edx |
2427 | jmp @f |
2427 | jmp @f |
2428 | .first_cluster: |
2428 | .first_cluster: |
2429 | ror edx, 16 |
2429 | ror edx, 16 |
2430 | mov [edi+20], dx |
2430 | mov [edi+20], dx |
2431 | ror edx, 16 |
2431 | ror edx, 16 |
2432 | mov [edi+26], dx |
2432 | mov [edi+26], dx |
2433 | @@: |
2433 | @@: |
2434 | push ecx |
2434 | push ecx |
2435 | mov ecx, -1 |
2435 | mov ecx, -1 |
2436 | call add_disk_free_space |
2436 | call add_disk_free_space |
2437 | pop ecx |
2437 | pop ecx |
2438 | mov eax, edx |
2438 | mov eax, edx |
2439 | cmp [hd_error], 0 |
2439 | cmp [hd_error], 0 |
2440 | jnz .device_err3 |
2440 | jnz .device_err3 |
2441 | add [edi+28], ebp |
2441 | add [edi+28], ebp |
2442 | jmp .extend_loop |
2442 | jmp .extend_loop |
2443 | .extend_done: |
2443 | .extend_done: |
2444 | mov [edi+28], ecx |
2444 | mov [edi+28], ecx |
2445 | pop edx ebp |
2445 | pop edx ebp |
2446 | xor eax, eax ; CF=0 |
2446 | xor eax, eax ; CF=0 |
2447 | ret |
2447 | ret |
2448 | .device_err3: |
2448 | .device_err3: |
2449 | pop edx |
2449 | pop edx |
2450 | jmp .device_err2 |
2450 | jmp .device_err2 |
2451 | .disk_full: |
2451 | .disk_full: |
2452 | pop eax edx ebp |
2452 | pop eax edx ebp |
2453 | push ERROR_DISK_FULL |
2453 | push ERROR_DISK_FULL |
2454 | pop eax |
2454 | pop eax |
2455 | cmp [hd_error], 0 |
2455 | cmp [hd_error], 0 |
2456 | jz @f |
2456 | jz @f |
2457 | mov al, 11 |
2457 | mov al, 11 |
2458 | @@: stc |
2458 | @@: stc |
2459 | ret |
2459 | ret |
2460 | 2460 | ||
2461 | ;---------------------------------------------------------------- |
2461 | ;---------------------------------------------------------------- |
2462 | ; |
2462 | ; |
2463 | ; fs_HdSetFileEnd - set end of file on hard disk |
2463 | ; fs_HdSetFileEnd - set end of file on hard disk |
2464 | ; |
2464 | ; |
2465 | ; esi points to filename |
2465 | ; esi points to filename |
2466 | ; ebx points to 64-bit number = new file size |
2466 | ; ebx points to 64-bit number = new file size |
2467 | ; ecx ignored (reserved) |
2467 | ; ecx ignored (reserved) |
2468 | ; edx ignored (reserved) |
2468 | ; edx ignored (reserved) |
2469 | ; |
2469 | ; |
2470 | ; ret eax = 0 ok or other = errormsg |
2470 | ; ret eax = 0 ok or other = errormsg |
2471 | ; |
2471 | ; |
2472 | ;-------------------------------------------------------------- |
2472 | ;-------------------------------------------------------------- |
2473 | fs_HdSetFileEnd: |
2473 | fs_HdSetFileEnd: |
2474 | cmp [fs_type], 1 |
2474 | cmp [fs_type], 1 |
2475 | jz ntfs_HdSetFileEnd |
2475 | jz ntfs_HdSetFileEnd |
2476 | cmp [fs_type], 2 |
2476 | cmp [fs_type], 2 |
2477 | jz ext2_HdSetFileEnd |
2477 | jz ext2_HdSetFileEnd |
2478 | cmp [fs_type], 16 |
2478 | cmp [fs_type], 16 |
2479 | jz @f |
2479 | jz @f |
2480 | cmp [fs_type], 32 |
2480 | cmp [fs_type], 32 |
2481 | jz @f |
2481 | jz @f |
2482 | push ERROR_UNKNOWN_FS |
2482 | push ERROR_UNKNOWN_FS |
2483 | .ret: |
2483 | .ret: |
2484 | pop eax |
2484 | pop eax |
2485 | ret |
2485 | ret |
2486 | @@: |
2486 | @@: |
2487 | cmp byte [esi], 0 |
2487 | cmp byte [esi], 0 |
2488 | jnz @f |
2488 | jnz @f |
2489 | .access_denied: |
2489 | .access_denied: |
2490 | push ERROR_ACCESS_DENIED |
2490 | push ERROR_ACCESS_DENIED |
2491 | jmp .ret |
2491 | jmp .ret |
2492 | @@: |
2492 | @@: |
2493 | push edi |
2493 | push edi |
2494 | call hd_find_lfn |
2494 | call hd_find_lfn |
2495 | pushfd |
2495 | pushfd |
2496 | cmp [hd_error], 0 |
2496 | cmp [hd_error], 0 |
2497 | jz @f |
2497 | jz @f |
2498 | popfd |
2498 | popfd |
2499 | push 11 |
2499 | push 11 |
2500 | jmp .ret |
2500 | jmp .ret |
2501 | @@: |
2501 | @@: |
2502 | popfd |
2502 | popfd |
2503 | jnc @f |
2503 | jnc @f |
2504 | pop edi |
2504 | pop edi |
2505 | push ERROR_FILE_NOT_FOUND |
2505 | push ERROR_FILE_NOT_FOUND |
2506 | jmp .ret |
2506 | jmp .ret |
2507 | @@: |
2507 | @@: |
2508 | ; must not be directory |
2508 | ; must not be directory |
2509 | test byte [edi+11], 10h |
2509 | test byte [edi+11], 10h |
2510 | jz @f |
2510 | jz @f |
2511 | pop edi |
2511 | pop edi |
2512 | jmp .access_denied |
2512 | jmp .access_denied |
2513 | @@: |
2513 | @@: |
2514 | ; file size must not exceed 4 Gb |
2514 | ; file size must not exceed 4 Gb |
2515 | cmp dword [ebx+4], 0 |
2515 | cmp dword [ebx+4], 0 |
2516 | jz @f |
2516 | jz @f |
2517 | pop edi |
2517 | pop edi |
2518 | push ERROR_END_OF_FILE |
2518 | push ERROR_END_OF_FILE |
2519 | jmp .ret |
2519 | jmp .ret |
2520 | @@: |
2520 | @@: |
2521 | push eax ; save directory sector |
2521 | push eax ; save directory sector |
2522 | ; set file modification date/time to current |
2522 | ; set file modification date/time to current |
2523 | call fat_update_datetime |
2523 | call fat_update_datetime |
2524 | mov eax, [ebx] |
2524 | mov eax, [ebx] |
2525 | cmp eax, [edi+28] |
2525 | cmp eax, [edi+28] |
2526 | jb .truncate |
2526 | jb .truncate |
2527 | ja .expand |
2527 | ja .expand |
2528 | pop eax |
2528 | pop eax |
2529 | mov ebx, buffer |
2529 | mov ebx, buffer |
2530 | call hd_write |
2530 | call hd_write |
2531 | pop edi |
2531 | pop edi |
2532 | xor eax, eax |
2532 | xor eax, eax |
2533 | cmp [hd_error], 0 |
2533 | cmp [hd_error], 0 |
2534 | jz @f |
2534 | jz @f |
2535 | mov al, 11 |
2535 | mov al, 11 |
2536 | @@: |
2536 | @@: |
2537 | ret |
2537 | ret |
2538 | .expand: |
2538 | .expand: |
2539 | push ebx ebp ecx |
2539 | push ebx ebp ecx |
2540 | push dword [edi+28] ; save old size |
2540 | push dword [edi+28] ; save old size |
2541 | mov ecx, eax |
2541 | mov ecx, eax |
2542 | call hd_extend_file |
2542 | call hd_extend_file |
2543 | push eax ; return code |
2543 | push eax ; return code |
2544 | jnc .expand_ok |
2544 | jnc .expand_ok |
2545 | cmp al, ERROR_DISK_FULL |
2545 | cmp al, ERROR_DISK_FULL |
2546 | jz .disk_full |
2546 | jz .disk_full |
2547 | .pop_ret: |
2547 | .pop_ret: |
2548 | call update_disk |
2548 | call update_disk |
2549 | pop eax ecx ebp ebx ecx edi edi |
2549 | pop eax ecx ebp ebx ecx edi edi |
2550 | ret |
2550 | ret |
2551 | .expand_ok: |
2551 | .expand_ok: |
2552 | .disk_full: |
2552 | .disk_full: |
2553 | ; save directory |
2553 | ; save directory |
2554 | mov eax, [edi+28] |
2554 | mov eax, [edi+28] |
2555 | xchg eax, [esp+20] |
2555 | xchg eax, [esp+20] |
2556 | mov ebx, buffer |
2556 | mov ebx, buffer |
2557 | call hd_write |
2557 | call hd_write |
2558 | mov eax, [edi+20-2] |
2558 | mov eax, [edi+20-2] |
2559 | mov ax, [edi+26] |
2559 | mov ax, [edi+26] |
2560 | mov edi, eax |
2560 | mov edi, eax |
2561 | cmp [hd_error], 0 |
2561 | cmp [hd_error], 0 |
2562 | jz @f |
2562 | jz @f |
2563 | .pop_ret11: |
2563 | .pop_ret11: |
2564 | mov byte [esp], 11 |
2564 | mov byte [esp], 11 |
2565 | jmp .pop_ret |
2565 | jmp .pop_ret |
2566 | @@: |
2566 | @@: |
2567 | ; now zero new data |
2567 | ; now zero new data |
2568 | xor ebp, ebp |
2568 | xor ebp, ebp |
2569 | ; edi=current cluster, ebp=sector in cluster |
2569 | ; edi=current cluster, ebp=sector in cluster |
2570 | ; [esp+20]=new size, [esp+4]=old size, [esp]=return code |
2570 | ; [esp+20]=new size, [esp+4]=old size, [esp]=return code |
2571 | .zero_loop: |
2571 | .zero_loop: |
2572 | sub dword [esp+4], 0x200 |
2572 | sub dword [esp+4], 0x200 |
2573 | jae .next_cluster |
2573 | jae .next_cluster |
2574 | lea eax, [edi-2] |
2574 | lea eax, [edi-2] |
2575 | imul eax, [SECTORS_PER_CLUSTER] |
2575 | imul eax, [SECTORS_PER_CLUSTER] |
2576 | add eax, [DATA_START] |
2576 | add eax, [DATA_START] |
2577 | add eax, ebp |
2577 | add eax, ebp |
2578 | cmp dword [esp+4], -0x200 |
2578 | cmp dword [esp+4], -0x200 |
2579 | jz .noread |
2579 | jz .noread |
2580 | mov ebx, buffer |
2580 | mov ebx, buffer |
2581 | call hd_read |
2581 | call hd_read |
2582 | cmp [hd_error], 0 |
2582 | cmp [hd_error], 0 |
2583 | jnz .err_next |
2583 | jnz .err_next |
2584 | .noread: |
2584 | .noread: |
2585 | mov ecx, [esp+4] |
2585 | mov ecx, [esp+4] |
2586 | neg ecx |
2586 | neg ecx |
2587 | push edi |
2587 | push edi |
2588 | mov edi, buffer+0x200 |
2588 | mov edi, buffer+0x200 |
2589 | add edi, [esp+8] |
2589 | add edi, [esp+8] |
2590 | push eax |
2590 | push eax |
2591 | xor eax, eax |
2591 | xor eax, eax |
2592 | mov [esp+12], eax |
2592 | mov [esp+12], eax |
2593 | rep stosb |
2593 | rep stosb |
2594 | pop eax |
2594 | pop eax |
2595 | pop edi |
2595 | pop edi |
2596 | call hd_write |
2596 | call hd_write |
2597 | cmp [hd_error], 0 |
2597 | cmp [hd_error], 0 |
2598 | jz .next_cluster |
2598 | jz .next_cluster |
2599 | .err_next: |
2599 | .err_next: |
2600 | mov byte [esp], 11 |
2600 | mov byte [esp], 11 |
2601 | .next_cluster: |
2601 | .next_cluster: |
2602 | sub dword [esp+20], 0x200 |
2602 | sub dword [esp+20], 0x200 |
2603 | jbe .pop_ret |
2603 | jbe .pop_ret |
2604 | inc ebp |
2604 | inc ebp |
2605 | cmp ebp, [SECTORS_PER_CLUSTER] |
2605 | cmp ebp, [SECTORS_PER_CLUSTER] |
2606 | jb .zero_loop |
2606 | jb .zero_loop |
2607 | xor ebp, ebp |
2607 | xor ebp, ebp |
2608 | mov eax, edi |
2608 | mov eax, edi |
2609 | call get_FAT |
2609 | call get_FAT |
2610 | mov edi, eax |
2610 | mov edi, eax |
2611 | cmp [hd_error], 0 |
2611 | cmp [hd_error], 0 |
2612 | jnz .pop_ret11 |
2612 | jnz .pop_ret11 |
2613 | jmp .zero_loop |
2613 | jmp .zero_loop |
2614 | .truncate: |
2614 | .truncate: |
2615 | mov [edi+28], eax |
2615 | mov [edi+28], eax |
2616 | push ecx |
2616 | push ecx |
2617 | mov ecx, [edi+20-2] |
2617 | mov ecx, [edi+20-2] |
2618 | mov cx, [edi+26] |
2618 | mov cx, [edi+26] |
2619 | push eax |
2619 | push eax |
2620 | test eax, eax |
2620 | test eax, eax |
2621 | jz .zero_size |
2621 | jz .zero_size |
2622 | ; find new last cluster |
2622 | ; find new last cluster |
2623 | @@: |
2623 | @@: |
2624 | mov eax, [SECTORS_PER_CLUSTER] |
2624 | mov eax, [SECTORS_PER_CLUSTER] |
2625 | shl eax, 9 |
2625 | shl eax, 9 |
2626 | sub [esp], eax |
2626 | sub [esp], eax |
2627 | jbe @f |
2627 | jbe @f |
2628 | mov eax, ecx |
2628 | mov eax, ecx |
2629 | call get_FAT |
2629 | call get_FAT |
2630 | mov ecx, eax |
2630 | mov ecx, eax |
2631 | cmp [hd_error], 0 |
2631 | cmp [hd_error], 0 |
2632 | jz @b |
2632 | jz @b |
2633 | .device_err3: |
2633 | .device_err3: |
2634 | pop eax ecx eax edi |
2634 | pop eax ecx eax edi |
2635 | push 11 |
2635 | push 11 |
2636 | pop eax |
2636 | pop eax |
2637 | ret |
2637 | ret |
2638 | @@: |
2638 | @@: |
2639 | ; we will zero data at the end of last sector - remember it |
2639 | ; we will zero data at the end of last sector - remember it |
2640 | push ecx |
2640 | push ecx |
2641 | ; terminate FAT chain |
2641 | ; terminate FAT chain |
2642 | push edx |
2642 | push edx |
2643 | mov eax, ecx |
2643 | mov eax, ecx |
2644 | mov edx, [fatEND] |
2644 | mov edx, [fatEND] |
2645 | call set_FAT |
2645 | call set_FAT |
2646 | mov eax, edx |
2646 | mov eax, edx |
2647 | pop edx |
2647 | pop edx |
2648 | cmp [hd_error], 0 |
2648 | cmp [hd_error], 0 |
2649 | jz @f |
2649 | jz @f |
2650 | .device_err4: |
2650 | .device_err4: |
2651 | pop ecx |
2651 | pop ecx |
2652 | jmp .device_err3 |
2652 | jmp .device_err3 |
2653 | .zero_size: |
2653 | .zero_size: |
2654 | and word [edi+20], 0 |
2654 | and word [edi+20], 0 |
2655 | and word [edi+26], 0 |
2655 | and word [edi+26], 0 |
2656 | push 0 |
2656 | push 0 |
2657 | mov eax, ecx |
2657 | mov eax, ecx |
2658 | @@: |
2658 | @@: |
2659 | ; delete FAT chain |
2659 | ; delete FAT chain |
2660 | call clear_cluster_chain |
2660 | call clear_cluster_chain |
2661 | cmp [hd_error], 0 |
2661 | cmp [hd_error], 0 |
2662 | jnz .device_err4 |
2662 | jnz .device_err4 |
2663 | ; save directory |
2663 | ; save directory |
2664 | mov eax, [esp+12] |
2664 | mov eax, [esp+12] |
2665 | push ebx |
2665 | push ebx |
2666 | mov ebx, buffer |
2666 | mov ebx, buffer |
2667 | call hd_write |
2667 | call hd_write |
2668 | pop ebx |
2668 | pop ebx |
2669 | cmp [hd_error], 0 |
2669 | cmp [hd_error], 0 |
2670 | jnz .device_err4 |
2670 | jnz .device_err4 |
2671 | ; zero last sector, ignore errors |
2671 | ; zero last sector, ignore errors |
2672 | pop ecx |
2672 | pop ecx |
2673 | pop eax |
2673 | pop eax |
2674 | dec ecx |
2674 | dec ecx |
2675 | imul ecx, [SECTORS_PER_CLUSTER] |
2675 | imul ecx, [SECTORS_PER_CLUSTER] |
2676 | add ecx, [DATA_START] |
2676 | add ecx, [DATA_START] |
2677 | push eax |
2677 | push eax |
2678 | sar eax, 9 |
2678 | sar eax, 9 |
2679 | add ecx, eax |
2679 | add ecx, eax |
2680 | pop eax |
2680 | pop eax |
2681 | and eax, 0x1FF |
2681 | and eax, 0x1FF |
2682 | jz .truncate_done |
2682 | jz .truncate_done |
2683 | push ebx eax |
2683 | push ebx eax |
2684 | mov eax, ecx |
2684 | mov eax, ecx |
2685 | mov ebx, buffer |
2685 | mov ebx, buffer |
2686 | call hd_read |
2686 | call hd_read |
2687 | pop eax |
2687 | pop eax |
2688 | lea edi, [buffer+eax] |
2688 | lea edi, [buffer+eax] |
2689 | push ecx |
2689 | push ecx |
2690 | mov ecx, 0x200 |
2690 | mov ecx, 0x200 |
2691 | sub ecx, eax |
2691 | sub ecx, eax |
2692 | xor eax, eax |
2692 | xor eax, eax |
2693 | rep stosb |
2693 | rep stosb |
2694 | pop eax |
2694 | pop eax |
2695 | call hd_write |
2695 | call hd_write |
2696 | pop ebx |
2696 | pop ebx |
2697 | .truncate_done: |
2697 | .truncate_done: |
2698 | pop ecx eax edi |
2698 | pop ecx eax edi |
2699 | call update_disk |
2699 | call update_disk |
2700 | xor eax, eax |
2700 | xor eax, eax |
2701 | cmp [hd_error], 0 |
2701 | cmp [hd_error], 0 |
2702 | jz @f |
2702 | jz @f |
2703 | mov al, 11 |
2703 | mov al, 11 |
2704 | @@: |
2704 | @@: |
2705 | ret |
2705 | ret |
2706 | 2706 | ||
2707 | fs_HdGetFileInfo: |
2707 | fs_HdGetFileInfo: |
2708 | cmp [fs_type], 1 |
2708 | cmp [fs_type], 1 |
2709 | jz ntfs_HdGetFileInfo |
2709 | jz ntfs_HdGetFileInfo |
2710 | cmp [fs_type], 2 |
2710 | cmp [fs_type], 2 |
2711 | jz ext2_HdGetFileInfo |
2711 | jz ext2_HdGetFileInfo |
2712 | cmp [fs_type], 16 |
2712 | cmp [fs_type], 16 |
2713 | jz @f |
2713 | jz @f |
2714 | cmp [fs_type], 32 |
2714 | cmp [fs_type], 32 |
2715 | jz @f |
2715 | jz @f |
2716 | mov eax, ERROR_UNKNOWN_FS |
2716 | mov eax, ERROR_UNKNOWN_FS |
2717 | ret |
2717 | ret |
2718 | @@: |
2718 | @@: |
2719 | cmp byte [esi], 0 |
2719 | cmp byte [esi], 0 |
2720 | jnz @f |
2720 | jnz @f |
2721 | mov eax, 2 |
2721 | mov eax, 2 |
2722 | ret |
2722 | ret |
2723 | @@: |
2723 | @@: |
2724 | push edi |
2724 | push edi |
2725 | call hd_find_lfn |
2725 | call hd_find_lfn |
2726 | pushfd |
2726 | pushfd |
2727 | cmp [hd_error], 0 |
2727 | cmp [hd_error], 0 |
2728 | jz @f |
2728 | jz @f |
2729 | popfd |
2729 | popfd |
2730 | pop edi |
2730 | pop edi |
2731 | mov eax, 11 |
2731 | mov eax, 11 |
2732 | ret |
2732 | ret |
2733 | @@: |
2733 | @@: |
2734 | popfd |
2734 | popfd |
2735 | jmp fs_GetFileInfo_finish |
2735 | jmp fs_GetFileInfo_finish |
2736 | 2736 | ||
2737 | fs_HdSetFileInfo: |
2737 | fs_HdSetFileInfo: |
2738 | cmp [fs_type], 1 |
2738 | cmp [fs_type], 1 |
2739 | jz ntfs_HdSetFileInfo |
2739 | jz ntfs_HdSetFileInfo |
2740 | cmp [fs_type], 2 |
2740 | cmp [fs_type], 2 |
2741 | jz ext2_HdSetFileInfo |
2741 | jz ext2_HdSetFileInfo |
2742 | cmp [fs_type], 16 |
2742 | cmp [fs_type], 16 |
2743 | jz @f |
2743 | jz @f |
2744 | cmp [fs_type], 32 |
2744 | cmp [fs_type], 32 |
2745 | jz @f |
2745 | jz @f |
2746 | mov eax, ERROR_UNKNOWN_FS |
2746 | mov eax, ERROR_UNKNOWN_FS |
2747 | ret |
2747 | ret |
2748 | @@: |
2748 | @@: |
2749 | cmp byte [esi], 0 |
2749 | cmp byte [esi], 0 |
2750 | jnz @f |
2750 | jnz @f |
2751 | mov eax, 2 |
2751 | mov eax, 2 |
2752 | ret |
2752 | ret |
2753 | @@: |
2753 | @@: |
2754 | push edi |
2754 | push edi |
2755 | call hd_find_lfn |
2755 | call hd_find_lfn |
2756 | pushfd |
2756 | pushfd |
2757 | cmp [hd_error], 0 |
2757 | cmp [hd_error], 0 |
2758 | jz @f |
2758 | jz @f |
2759 | popfd |
2759 | popfd |
2760 | pop edi |
2760 | pop edi |
2761 | mov eax, 11 |
2761 | mov eax, 11 |
2762 | ret |
2762 | ret |
2763 | @@: |
2763 | @@: |
2764 | popfd |
2764 | popfd |
2765 | jnc @f |
2765 | jnc @f |
2766 | pop edi |
2766 | pop edi |
2767 | mov eax, ERROR_FILE_NOT_FOUND |
2767 | mov eax, ERROR_FILE_NOT_FOUND |
2768 | ret |
2768 | ret |
2769 | @@: |
2769 | @@: |
2770 | push eax |
2770 | push eax |
2771 | call bdfe_to_fat_entry |
2771 | call bdfe_to_fat_entry |
2772 | pop eax |
2772 | pop eax |
2773 | mov ebx, buffer |
2773 | mov ebx, buffer |
2774 | call hd_write |
2774 | call hd_write |
2775 | call update_disk |
2775 | call update_disk |
2776 | pop edi |
2776 | pop edi |
2777 | xor eax, eax |
2777 | xor eax, eax |
2778 | ret |
2778 | ret |
2779 | 2779 | ||
2780 | ;---------------------------------------------------------------- |
2780 | ;---------------------------------------------------------------- |
2781 | ; |
2781 | ; |
2782 | ; fs_HdDelete - delete file or empty folder from hard disk |
2782 | ; fs_HdDelete - delete file or empty folder from hard disk |
2783 | ; |
2783 | ; |
2784 | ; esi points to filename |
2784 | ; esi points to filename |
2785 | ; |
2785 | ; |
2786 | ; ret eax = 0 ok or other = errormsg |
2786 | ; ret eax = 0 ok or other = errormsg |
2787 | ; |
2787 | ; |
2788 | ;-------------------------------------------------------------- |
2788 | ;-------------------------------------------------------------- |
2789 | fs_HdDelete: |
2789 | fs_HdDelete: |
2790 | cmp [fs_type], 1 |
2790 | cmp [fs_type], 1 |
2791 | jz ntfs_HdDelete |
2791 | jz ntfs_HdDelete |
2792 | cmp [fs_type], 1 |
2792 | cmp [fs_type], 1 |
2793 | jz ext2_HdDelete |
2793 | jz ext2_HdDelete |
2794 | cmp [fs_type], 16 |
2794 | cmp [fs_type], 16 |
2795 | jz @f |
2795 | jz @f |
2796 | cmp [fs_type], 32 |
2796 | cmp [fs_type], 32 |
2797 | jz @f |
2797 | jz @f |
2798 | push ERROR_UNKNOWN_FS |
2798 | push ERROR_UNKNOWN_FS |
2799 | .pop_ret: |
2799 | .pop_ret: |
2800 | pop eax |
2800 | pop eax |
2801 | ret |
2801 | ret |
2802 | @@: |
2802 | @@: |
2803 | cmp byte [esi], 0 |
2803 | cmp byte [esi], 0 |
2804 | jnz @f |
2804 | jnz @f |
2805 | ; cannot delete root! |
2805 | ; cannot delete root! |
2806 | .access_denied: |
2806 | .access_denied: |
2807 | push ERROR_ACCESS_DENIED |
2807 | push ERROR_ACCESS_DENIED |
2808 | jmp .pop_ret |
2808 | jmp .pop_ret |
2809 | @@: |
2809 | @@: |
2810 | and [longname_sec1], 0 |
2810 | and [longname_sec1], 0 |
2811 | and [longname_sec2], 0 |
2811 | and [longname_sec2], 0 |
2812 | push edi |
2812 | push edi |
2813 | call hd_find_lfn |
2813 | call hd_find_lfn |
2814 | jnc .found |
2814 | jnc .found |
2815 | pop edi |
2815 | pop edi |
2816 | push ERROR_FILE_NOT_FOUND |
2816 | push ERROR_FILE_NOT_FOUND |
2817 | jmp .pop_ret |
2817 | jmp .pop_ret |
2818 | .found: |
2818 | .found: |
2819 | cmp dword [edi], '. ' |
2819 | cmp dword [edi], '. ' |
2820 | jz .access_denied2 |
2820 | jz .access_denied2 |
2821 | cmp dword [edi], '.. ' |
2821 | cmp dword [edi], '.. ' |
2822 | jz .access_denied2 |
2822 | jz .access_denied2 |
2823 | test byte [edi+11], 10h |
2823 | test byte [edi+11], 10h |
2824 | jz .dodel |
2824 | jz .dodel |
2825 | ; we can delete only empty folders! |
2825 | ; we can delete only empty folders! |
2826 | pushad |
2826 | pushad |
2827 | mov ebp, [edi+20-2] |
2827 | mov ebp, [edi+20-2] |
2828 | mov bp, [edi+26] |
2828 | mov bp, [edi+26] |
2829 | xor ecx, ecx |
2829 | xor ecx, ecx |
2830 | lea eax, [ebp-2] |
2830 | lea eax, [ebp-2] |
2831 | imul eax, [SECTORS_PER_CLUSTER] |
2831 | imul eax, [SECTORS_PER_CLUSTER] |
2832 | add eax, [DATA_START] |
2832 | add eax, [DATA_START] |
2833 | mov ebx, buffer |
2833 | mov ebx, buffer |
2834 | call hd_read |
2834 | call hd_read |
2835 | cmp [hd_error], 0 |
2835 | cmp [hd_error], 0 |
2836 | jnz .err1 |
2836 | jnz .err1 |
2837 | add ebx, 2*0x20 |
2837 | add ebx, 2*0x20 |
2838 | .checkempty: |
2838 | .checkempty: |
2839 | cmp byte [ebx], 0 |
2839 | cmp byte [ebx], 0 |
2840 | jz .empty |
2840 | jz .empty |
2841 | cmp byte [ebx], 0xE5 |
2841 | cmp byte [ebx], 0xE5 |
2842 | jnz .notempty |
2842 | jnz .notempty |
2843 | add ebx, 0x20 |
2843 | add ebx, 0x20 |
2844 | cmp ebx, buffer+0x200 |
2844 | cmp ebx, buffer+0x200 |
2845 | jb .checkempty |
2845 | jb .checkempty |
2846 | inc ecx |
2846 | inc ecx |
2847 | cmp ecx, [SECTORS_PER_CLUSTER] |
2847 | cmp ecx, [SECTORS_PER_CLUSTER] |
2848 | jb @f |
2848 | jb @f |
2849 | mov eax, ebp |
2849 | mov eax, ebp |
2850 | call get_FAT |
2850 | call get_FAT |
2851 | cmp [hd_error], 0 |
2851 | cmp [hd_error], 0 |
2852 | jnz .err1 |
2852 | jnz .err1 |
2853 | mov ebp, eax |
2853 | mov ebp, eax |
2854 | xor ecx, ecx |
2854 | xor ecx, ecx |
2855 | @@: |
2855 | @@: |
2856 | lea eax, [ebp-2] |
2856 | lea eax, [ebp-2] |
2857 | imul eax, [SECTORS_PER_CLUSTER] |
2857 | imul eax, [SECTORS_PER_CLUSTER] |
2858 | add eax, [DATA_START] |
2858 | add eax, [DATA_START] |
2859 | add eax, ecx |
2859 | add eax, ecx |
2860 | mov ebx, buffer |
2860 | mov ebx, buffer |
2861 | call hd_read |
2861 | call hd_read |
2862 | cmp [hd_error], 0 |
2862 | cmp [hd_error], 0 |
2863 | jz .checkempty |
2863 | jz .checkempty |
2864 | .err1: |
2864 | .err1: |
2865 | popad |
2865 | popad |
2866 | .err2: |
2866 | .err2: |
2867 | pop edi |
2867 | pop edi |
2868 | push 11 |
2868 | push 11 |
2869 | pop eax |
2869 | pop eax |
2870 | ret |
2870 | ret |
2871 | .notempty: |
2871 | .notempty: |
2872 | popad |
2872 | popad |
2873 | .access_denied2: |
2873 | .access_denied2: |
2874 | pop edi |
2874 | pop edi |
2875 | push ERROR_ACCESS_DENIED |
2875 | push ERROR_ACCESS_DENIED |
2876 | pop eax |
2876 | pop eax |
2877 | ret |
2877 | ret |
2878 | .empty: |
2878 | .empty: |
2879 | popad |
2879 | popad |
2880 | push ebx |
2880 | push ebx |
2881 | mov ebx, buffer |
2881 | mov ebx, buffer |
2882 | call hd_read |
2882 | call hd_read |
2883 | pop ebx |
2883 | pop ebx |
2884 | cmp [hd_error], 0 |
2884 | cmp [hd_error], 0 |
2885 | jnz .err2 |
2885 | jnz .err2 |
2886 | .dodel: |
2886 | .dodel: |
2887 | push eax |
2887 | push eax |
2888 | mov eax, [edi+20-2] |
2888 | mov eax, [edi+20-2] |
2889 | mov ax, [edi+26] |
2889 | mov ax, [edi+26] |
2890 | xchg eax, [esp] |
2890 | xchg eax, [esp] |
2891 | ; delete folder entry |
2891 | ; delete folder entry |
2892 | mov byte [edi], 0xE5 |
2892 | mov byte [edi], 0xE5 |
2893 | ; delete LFN (if present) |
2893 | ; delete LFN (if present) |
2894 | .lfndel: |
2894 | .lfndel: |
2895 | cmp edi, buffer |
2895 | cmp edi, buffer |
2896 | ja @f |
2896 | ja @f |
2897 | cmp [longname_sec2], 0 |
2897 | cmp [longname_sec2], 0 |
2898 | jz .lfndone |
2898 | jz .lfndone |
2899 | push [longname_sec2] |
2899 | push [longname_sec2] |
2900 | push [longname_sec1] |
2900 | push [longname_sec1] |
2901 | pop [longname_sec2] |
2901 | pop [longname_sec2] |
2902 | and [longname_sec1], 0 |
2902 | and [longname_sec1], 0 |
2903 | push ebx |
2903 | push ebx |
2904 | mov ebx, buffer |
2904 | mov ebx, buffer |
2905 | call hd_write |
2905 | call hd_write |
2906 | mov eax, [esp+4] |
2906 | mov eax, [esp+4] |
2907 | call hd_read |
2907 | call hd_read |
2908 | pop ebx |
2908 | pop ebx |
2909 | pop eax |
2909 | pop eax |
2910 | mov edi, buffer+0x200 |
2910 | mov edi, buffer+0x200 |
2911 | @@: |
2911 | @@: |
2912 | sub edi, 0x20 |
2912 | sub edi, 0x20 |
2913 | cmp byte [edi], 0xE5 |
2913 | cmp byte [edi], 0xE5 |
2914 | jz .lfndone |
2914 | jz .lfndone |
2915 | cmp byte [edi+11], 0xF |
2915 | cmp byte [edi+11], 0xF |
2916 | jnz .lfndone |
2916 | jnz .lfndone |
2917 | mov byte [edi], 0xE5 |
2917 | mov byte [edi], 0xE5 |
2918 | jmp .lfndel |
2918 | jmp .lfndel |
2919 | .lfndone: |
2919 | .lfndone: |
2920 | push ebx |
2920 | push ebx |
2921 | mov ebx, buffer |
2921 | mov ebx, buffer |
2922 | call hd_write |
2922 | call hd_write |
2923 | pop ebx |
2923 | pop ebx |
2924 | ; delete FAT chain |
2924 | ; delete FAT chain |
2925 | pop eax |
2925 | pop eax |
2926 | call clear_cluster_chain |
2926 | call clear_cluster_chain |
2927 | call update_disk |
2927 | call update_disk |
2928 | pop edi |
2928 | pop edi |
2929 | xor eax, eax |
2929 | xor eax, eax |
2930 | cmp [hd_error], 0 |
2930 | cmp [hd_error], 0 |
2931 | jz @f |
2931 | jz @f |
2932 | mov al, 11 |
2932 | mov al, 11 |
2933 | @@: |
2933 | @@: |
2934 | ret |
2934 | ret |
2935 | 2935 | ||
2936 | ; \end{diamond}=>=>>> |
2936 | ; \end{diamond} |
- | 2937 | ||
- | 2938 | ||
- | 2939 | ; \begin{diamond} |
|
- | 2940 | fat_find_lfn: |
|
- | 2941 | ; in: esi->name |
|
- | 2942 | ; [esp+4] = next |
|
- | 2943 | ; [esp+8] = first |
|
- | 2944 | ; [esp+C]... - possibly parameters for first and next |
|
- | 2945 | ; out: CF=1 - file not found |
|
- | 2946 | ; else CF=0, esi->next name component, edi->direntry |
|
- | 2947 | pusha |
|
- | 2948 | lea eax, [esp+0Ch+20h] |
|
- | 2949 | call dword [eax-4] |
|
- | 2950 | jc .reterr |
|
- | 2951 | sub esp, 262*2 ; reserve place for LFN |
|
- | 2952 | mov ebp, esp |
|
- | 2953 | push 0 ; for fat_get_name: read ASCII name |
|
- | 2954 | .l1: |
|
- | 2955 | call fat_get_name |
|
- | 2956 | jc .l2 |
|
- | 2957 | call fat_compare_name |
|
- | 2958 | jz .found |
|
- | 2959 | .l2: |
|
- | 2960 | lea eax, [esp+0Ch+20h+262*2+4] |
|
- | 2961 | call dword [eax-8] |
|
- | 2962 | jnc .l1 |
|
- | 2963 | add esp, 262*2+4 |
|
- | 2964 | .reterr: |
|
- | 2965 | stc |
|
- | 2966 | popa |
|
- | 2967 | ret |
|
- | 2968 | .found: |
|
- | 2969 | add esp, 262*2+4 |
|
- | 2970 | ; if this is LFN entry, advance to true entry |
|
- | 2971 | cmp byte [edi+11], 0xF |
|
- | 2972 | jnz @f |
|
- | 2973 | lea eax, [esp+0Ch+20h] |
|
- | 2974 | call dword [eax-8] |
|
- | 2975 | jc .reterr |
|
- | 2976 | @@: |
|
- | 2977 | add esp, 8 ; CF=0 |
|
- | 2978 | push esi |
|
- | 2979 | push edi |
|
- | 2980 | popa |
|
- | 2981 | ret=>=>>> |
|
- | 2982 | ||
- | 2983 |