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Rev 2455 | Rev 2643 | ||
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Line 42... | Line 42... | ||
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 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
Line 46... | Line 46... | ||
46 | 46 | ||
Line 47... | Line 47... | ||
47 | $Revision: 2455 $ |
47 | $Revision: 2643 $ |
Line 48... | Line 48... | ||
48 | 48 | ||
Line 68... | Line 68... | ||
68 | PUSHAD_EBX equ [esp+16] |
68 | PUSHAD_EBX equ [esp+16] |
69 | PUSHAD_EBP equ [esp+8] |
69 | PUSHAD_EBP equ [esp+8] |
70 | PUSHAD_ESI equ [esp+4] |
70 | PUSHAD_ESI equ [esp+4] |
71 | PUSHAD_EDI equ [esp+0] |
71 | PUSHAD_EDI equ [esp+0] |
Line -... | Line 72... | ||
- | 72 | ||
- | 73 | ; Internal data for every FAT partition. |
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- | 74 | struct FAT |
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- | 75 | p PARTITION ; must be the first item |
|
- | 76 | fs_type db ? |
|
- | 77 | fat16_root db 0 ; flag for fat16 rootdir |
|
- | 78 | fat_change db 0 ; 1=fat has changed |
|
- | 79 | db ? ; alignment |
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- | 80 | Lock MUTEX ? ; currently operations with one partition |
|
- | 81 | ; can not be executed in parallel since the |
|
- | 82 | ; legacy code is not ready; this mutex guards |
|
- | 83 | ; all operations |
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- | 84 | SECTORS_PER_FAT dd 0x1f3a |
|
- | 85 | NUMBER_OF_FATS dd 0x2 |
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- | 86 | SECTORS_PER_CLUSTER dd 0x8 |
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- | 87 | BYTES_PER_SECTOR dd 0x200 ; Note: if BPS <> 512 need lots of changes |
|
- | 88 | ROOT_CLUSTER dd 2 ; first rootdir cluster |
|
- | 89 | FAT_START dd 0 ; start of fat table |
|
- | 90 | ROOT_START dd 0 ; start of rootdir (only fat16) |
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- | 91 | ROOT_SECTORS dd 0 ; count of rootdir sectors (only fat16) |
|
- | 92 | DATA_START dd 0 ; start of data area (=first cluster 2) |
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- | 93 | LAST_CLUSTER dd 0 ; last availabe cluster |
|
- | 94 | ADR_FSINFO dd 0 ; used only by fat32 |
|
- | 95 | ||
- | 96 | fatRESERVED dd 0x0FFFFFF6 |
|
- | 97 | fatBAD dd 0x0FFFFFF7 |
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- | 98 | fatEND dd 0x0FFFFFF8 |
|
- | 99 | fatMASK dd 0x0FFFFFFF |
|
- | 100 | ||
- | 101 | fatStartScan dd 2 |
|
- | 102 | ||
- | 103 | cluster_tmp dd 0 ; used by analyze_directory |
|
- | 104 | ; and analyze_directory_to_write |
|
- | 105 | ||
- | 106 | longname_sec1 dd 0 ; used by analyze_directory to save 2 previous |
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- | 107 | longname_sec2 dd 0 ; directory sectors for delete long filename |
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- | 108 | ||
- | 109 | fat_in_cache dd -1 |
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- | 110 | ||
- | 111 | fat_cache rb 512 |
|
- | 112 | buffer rb 512 |
|
- | 113 | fsinfo_buffer rb 512 |
|
- | 114 | ends |
|
72 | 115 | ||
73 | uglobal |
116 | uglobal |
74 | align 4 |
117 | align 4 |
75 | partition_count dd 0 ; partitions found by set_FAT32_variables |
- | |
76 | longname_sec1 dd 0 ; used by analyze_directory to save 2 previous |
- | |
Line 77... | Line 118... | ||
77 | longname_sec2 dd 0 ; directory sectors for delete long filename |
118 | partition_count dd 0 ; partitions found by set_FAT32_variables |
78 | 119 | ||
79 | hd_error dd 0 ; set by wait_for_sector_buffer |
120 | hd_error dd 0 ; set by wait_for_sector_buffer |
Line 80... | Line -... | ||
80 | hd_setup dd 0 |
- | |
81 | hd_wait_timeout dd 0 |
- | |
82 | - | ||
83 | cluster_tmp dd 0 ; used by analyze_directory |
- | |
84 | ; and analyze_directory_to_write |
- | |
85 | 121 | hd_setup dd 0 |
|
86 | file_size dd 0 ; used by file_read |
122 | hd_wait_timeout dd 0 |
Line 87... | Line -... | ||
87 | - | ||
88 | cache_search_start dd 0 ; used by find_empty_slot |
- | |
89 | endg |
- | |
90 | - | ||
91 | iglobal |
123 | |
92 | fat_in_cache dd -1 |
124 | cache_search_start dd 0 ; used by find_empty_slot |
93 | endg |
- | |
94 | - | ||
95 | uglobal |
125 | endg |
96 | align 4 |
126 | |
97 | fat_cache: |
127 | uglobal |
98 | times 512 db 0 |
- | |
99 | Sector512: ; label for dev_hdcd.inc |
- | |
100 | buffer: |
128 | align 4 |
Line 101... | Line 129... | ||
101 | times 512 db 0 |
129 | Sector512: ; label for dev_hdcd.inc |
- | 130 | buffer: |
|
- | 131 | times 512 db 0 |
|
- | 132 | endg |
|
- | 133 | ||
102 | fsinfo_buffer: |
134 | iglobal |
- | 135 | align 4 |
|
- | 136 | fat_user_functions: |
|
103 | times 512 db 0 |
137 | dd (fat_user_functions_end - fat_user_functions - 4) / 4 |
- | 138 | dd fat_Read |
|
- | 139 | dd fat_ReadFolder |
|
- | 140 | dd fat_Rewrite |
|
- | 141 | dd fat_Write |
|
- | 142 | dd fat_SetFileEnd |
|
- | 143 | dd fat_GetFileInfo |
|
104 | endg |
144 | dd fat_SetFileInfo |
Line -... | Line 145... | ||
- | 145 | dd 0 |
|
- | 146 | dd fat_Delete |
|
- | 147 | dd fat_CreateFolder |
|
- | 148 | fat_user_functions_end: |
|
- | 149 | endg |
|
- | 150 | ||
- | 151 | ; these labels are located before the main function to make |
|
- | 152 | ; most of jumps to these be short |
|
- | 153 | fat_create_partition.free_return0: |
|
- | 154 | push ebx |
|
- | 155 | mov eax, ebp |
|
105 | 156 | call free |
|
- | 157 | pop ebx |
|
- | 158 | pop ebp |
|
- | 159 | fat_create_partition.return0: |
|
- | 160 | xor eax, eax |
|
- | 161 | ret |
|
- | 162 | fat_create_partition: |
|
- | 163 | ; bootsector must have been successfully read |
|
- | 164 | cmp dword [esp+4], 1 |
|
- | 165 | jnz .return0 |
|
- | 166 | ; bootsector signature must be correct |
|
- | 167 | cmp word [ebx+0x1fe], 0xaa55 |
|
- | 168 | jnz .return0 |
|
- | 169 | ; sectors per cluster must be nonzero |
|
- | 170 | cmp byte [ebx+0xd], 0 |
|
- | 171 | jz .return0 |
|
- | 172 | ; bytes per sector must be 0x200 |
|
- | 173 | cmp word [ebx+0xb], 0x200 |
|
- | 174 | jnz .return0 |
|
- | 175 | ; number of fats must be nonzero |
|
- | 176 | cmp byte [ebx+0x10], 0 |
|
- | 177 | jz .return0 |
|
- | 178 | ; The only reason to be invalid partition now is FAT12. Since the test for |
|
- | 179 | ; FAT size requires knowledge of some calculated values, which are also used |
|
- | 180 | ; in the normal operation, let's hope for the best and allocate data now; if |
|
- | 181 | ; it will prove wrong, just deallocate it. |
|
- | 182 | push ebx |
|
- | 183 | push sizeof.FAT |
|
- | 184 | pop eax |
|
- | 185 | call malloc |
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- | 186 | pop ebx |
|
- | 187 | test eax, eax |
|
- | 188 | jz .return0 |
|
- | 189 | mov ecx, [ebp+8] |
|
- | 190 | mov dword [eax+FAT.p.FirstSector], ecx |
|
- | 191 | mov ecx, [ebp+12] |
|
- | 192 | mov dword [eax+FAT.p.FirstSector+4], ecx |
|
- | 193 | mov ecx, [ebp+16] |
|
- | 194 | mov dword [eax+FAT.p.Length], ecx |
|
- | 195 | mov ecx, [ebp+20] |
|
- | 196 | mov dword [eax+FAT.p.Length+4], ecx |
|
- | 197 | mov [eax+FAT.p.Disk], esi |
|
- | 198 | mov [eax+FAT.p.FSUserFunctions], fat_user_functions |
|
- | 199 | or [eax+FAT.fat_in_cache], -1 |
|
Line 106... | Line -... | ||
106 | uglobal |
- | |
107 | fat16_root db 0 ; flag for fat16 rootdir |
200 | mov [eax+FAT.fat_change], 0 |
108 | fat_change db 0 ; 1=fat has changed |
201 | push ebp |
Line 109... | Line -... | ||
109 | endg |
- | |
110 | 202 | mov ebp, eax |
|
111 | reserve_hd1: |
203 | |
Line -... | Line 204... | ||
- | 204 | lea ecx, [ebp+FAT.Lock] |
|
112 | 205 | call mutex_init |
|
Line 113... | Line 206... | ||
113 | cli |
206 | |
114 | cmp [hd1_status], 0 |
207 | movzx eax, word [ebx+0xe] ; sectors reserved |
115 | je reserve_ok1 |
208 | mov [ebp+FAT.FAT_START], eax |
116 | 209 | ||
117 | sti |
210 | movzx eax, byte [ebx+0xd] ; sectors per cluster |
118 | call change_task |
211 | mov [ebp+FAT.SECTORS_PER_CLUSTER], eax |
119 | jmp reserve_hd1 |
- | |
120 | 212 | ||
121 | reserve_ok1: |
213 | movzx ecx, word [ebx+0xb] ; bytes per sector |
Line -... | Line 214... | ||
- | 214 | mov [ebp+FAT.BYTES_PER_SECTOR], ecx |
|
122 | 215 | ||
123 | push eax |
216 | movzx eax, word [ebx+0x11] ; count of rootdir entries (=0 fat32) |
- | 217 | shl eax, 5 ; mul 32 |
|
124 | mov eax, [CURRENT_TASK] |
218 | dec ecx |
- | 219 | add eax, ecx ; round up if not equal count |
|
Line 125... | Line -... | ||
125 | shl eax, 5 |
- | |
126 | mov eax, [eax+CURRENT_TASK+TASKDATA.pid] |
220 | inc ecx ; bytes per sector |
127 | mov [hd1_status], eax |
- | |
128 | pop eax |
221 | xor edx, edx |
129 | sti |
- | |
130 | ret |
222 | div ecx |
131 | ;******************************************** |
- | |
132 | - | ||
133 | uglobal |
- | |
134 | hd_in_cache db ? |
223 | mov [ebp+FAT.ROOT_SECTORS], eax ; count of rootdir sectors |
135 | endg |
224 | |
136 | - | ||
137 | reserve_hd_channel: |
- | |
138 | ; BIOS disk accesses are protected with common mutex hd1_status |
- | |
139 | ; This must be modified when hd1_status will not be valid! |
- | |
140 | cmp [hdpos], 0x80 |
- | |
141 | jae .ret |
225 | movzx eax, word [ebx+0x16] ; sectors per fat <65536 |
142 | cmp [hdbase], 0x1F0 |
226 | test eax, eax |
143 | jne .IDE_Channel_2 |
227 | jnz @f |
144 | .IDE_Channel_1: |
- | |
145 | cli |
- | |
146 | cmp [IDE_Channel_1], 0 |
- | |
147 | je .reserve_ok_1 |
228 | mov eax, [ebx+0x24] ; sectors per fat |
148 | sti |
229 | @@: |
149 | call change_task |
- | |
150 | jmp .IDE_Channel_1 |
230 | mov [ebp+FAT.SECTORS_PER_FAT], eax |
151 | .IDE_Channel_2: |
- | |
152 | cli |
231 | |
153 | cmp [IDE_Channel_2], 0 |
- | |
154 | je .reserve_ok_2 |
- | |
155 | sti |
232 | movzx eax, byte [ebx+0x10] ; number of fats |
- | 233 | mov [ebp+FAT.NUMBER_OF_FATS], eax |
|
- | 234 | imul eax, [ebp+FAT.SECTORS_PER_FAT] |
|
- | 235 | add eax, [ebp+FAT.FAT_START] |
|
156 | call change_task |
236 | mov [ebp+FAT.ROOT_START], eax ; rootdir = fat_start + fat_size * fat_count |
- | 237 | add eax, [ebp+FAT.ROOT_SECTORS] ; rootdir sectors should be 0 on fat32 |
|
- | 238 | mov [ebp+FAT.DATA_START], eax ; data area = rootdir + rootdir_size |
|
- | 239 | ||
- | 240 | movzx eax, word [ebx+0x13] ; total sector count <65536 |
|
- | 241 | test eax, eax |
|
- | 242 | jnz @f |
|
- | 243 | mov eax, [ebx+0x20] ; total sector count |
|
- | 244 | @@: |
|
- | 245 | mov dword [ebp+FAT.p.Length], eax |
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- | 246 | and dword [ebp+FAT.p.Length+4], 0 |
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- | 247 | sub eax, [ebp+FAT.DATA_START] ; eax = count of data sectors |
|
- | 248 | xor edx, edx |
|
- | 249 | div [ebp+FAT.SECTORS_PER_CLUSTER] |
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- | 250 | inc eax |
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- | 251 | mov [ebp+FAT.LAST_CLUSTER], eax |
|
- | 252 | dec eax ; cluster count |
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- | 253 | mov [ebp+FAT.fatStartScan], 2 |
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157 | jmp .IDE_Channel_2 |
254 | |
- | 255 | ; limits by Microsoft Hardware White Paper v1.03 |
|
- | 256 | cmp eax, 4085 ; 0xff5 |
|
- | 257 | jb .free_return0 ; fat12 not supported |
|
158 | .reserve_ok_1: |
258 | cmp eax, 65525 ; 0xfff5 |
- | 259 | jb .fat16 |
|
159 | mov [IDE_Channel_1], 1 |
260 | .fat32: |
160 | push eax |
261 | mov eax, [ebx+0x2c] ; rootdir cluster |
161 | mov al, 1 |
- | |
162 | jmp @f |
262 | mov [ebp+FAT.ROOT_CLUSTER], eax |
163 | .reserve_ok_2: |
263 | movzx eax, word [ebx+0x30] |
164 | mov [IDE_Channel_2], 1 |
264 | mov [ebp+FAT.ADR_FSINFO], eax |
165 | push eax |
- | |
166 | mov al, 3 |
265 | push ebx |
167 | @@: |
- | |
168 | cmp [hdid], 1 |
- | |
169 | sbb al, -1 |
266 | add ebx, 512 |
170 | cmp al, [hd_in_cache] |
267 | call fs_read32_sys |
171 | jz @f |
268 | test eax, eax |
172 | mov [hd_in_cache], al |
269 | jnz @f |
173 | call clear_hd_cache |
270 | mov eax, [ebx+0x1ec] |
174 | @@: |
271 | cmp eax, -1 |
175 | pop eax |
272 | jz @f |
176 | sti |
- | |
177 | .ret: |
273 | mov [ebp+FAT.fatStartScan], eax |
178 | ret |
274 | @@: |
- | 275 | pop ebx |
|
- | 276 | mov [ebp+FAT.fatRESERVED], 0x0FFFFFF6 |
|
- | 277 | mov [ebp+FAT.fatBAD], 0x0FFFFFF7 |
|
- | 278 | mov [ebp+FAT.fatEND], 0x0FFFFFF8 |
|
- | 279 | mov [ebp+FAT.fatMASK], 0x0FFFFFFF |
|
- | 280 | mov al, 32 |
|
179 | 281 | mov [fs_type], al |
|
- | 282 | mov [ebp+FAT.fs_type], al |
|
- | 283 | mov eax, ebp |
|
- | 284 | pop ebp |
|
180 | free_hd_channel: |
285 | ret |
181 | ; see comment at reserve_hd_channel |
- | |
182 | cmp [hdpos], 0x80 |
- | |
183 | jae .ret |
- | |
184 | cmp [hdbase], 0x1F0 |
- | |
Line 185... | Line 286... | ||
185 | jne .IDE_Channel_2 |
286 | .fat16: |
186 | .IDE_Channel_1: |
287 | and [ebp+FAT.ROOT_CLUSTER], 0 |
187 | mov [IDE_Channel_1], 0 |
288 | mov [ebp+FAT.fatRESERVED], 0x0000FFF6 |
188 | .ret: |
289 | mov [ebp+FAT.fatBAD], 0x0000FFF7 |
- | 290 | mov [ebp+FAT.fatEND], 0x0000FFF8 |
|
189 | ret |
291 | mov [ebp+FAT.fatMASK], 0x0000FFFF |
190 | .IDE_Channel_2: |
292 | mov al, 16 |
- | 293 | mov [fs_type], al |
|
191 | mov [IDE_Channel_2], 0 |
294 | mov [ebp+FAT.fs_type], al |
Line 192... | Line 295... | ||
192 | ret |
295 | mov eax, ebp |
193 | ;******************************************** |
296 | pop ebp |
194 | problem_partition db 0 ; used for partitions search |
297 | ret |
195 | 298 | ||
196 | include 'part_set.inc' |
299 | set_FAT: |
197 | 300 | ;-------------------------------- |
|
198 | set_FAT: |
301 | ; input : EAX = cluster |
199 | ;-------------------------------- |
302 | ; EDX = value to save |
200 | ; input : EAX = cluster |
303 | ; EBP = pointer to FAT structure |
201 | ; EDX = value to save |
304 | ; output : EDX = old value |
202 | ; output : EDX = old value |
305 | ;-------------------------------- |
203 | ;-------------------------------- |
306 | ; out: CF set <=> error |
204 | push eax ebx esi |
307 | push eax ebx esi |
205 | 308 | ||
Line 206... | Line 309... | ||
206 | cmp eax, 2 |
309 | cmp eax, 2 |
207 | jb sfc_error |
310 | jb sfc_error |
Line 208... | Line 311... | ||
208 | cmp eax, [LAST_CLUSTER] |
311 | cmp eax, [ebp+FAT.LAST_CLUSTER] |
209 | ja sfc_error |
312 | ja sfc_error |
210 | cmp [fs_type], 16 |
313 | cmp [ebp+FAT.fs_type], 16 |
211 | je sfc_1 |
- | |
212 | add eax, eax |
314 | je sfc_1 |
Line 213... | Line 315... | ||
213 | sfc_1: |
315 | add eax, eax |
214 | add eax, eax |
316 | sfc_1: |
215 | mov esi, 511 |
317 | add eax, eax |
216 | and esi, eax ; esi = position in fat sector |
318 | mov esi, 511 |
217 | shr eax, 9 ; eax = fat sector |
319 | and esi, eax ; esi = position in fat sector |
Line 218... | Line 320... | ||
218 | add eax, [FAT_START] |
320 | shr eax, 9 ; eax = fat sector |
219 | mov ebx, fat_cache |
321 | add eax, [ebp+FAT.FAT_START] |
220 | 322 | lea ebx, [ebp+FAT.fat_cache] |
|
Line 221... | Line 323... | ||
221 | cmp eax, [fat_in_cache]; is fat sector already in memory? |
323 | |
222 | je sfc_in_cache ; yes |
324 | cmp eax, [ebp+FAT.fat_in_cache]; is fat sector already in memory? |
223 | 325 | je sfc_in_cache ; yes |
|
Line 224... | Line 326... | ||
224 | cmp [fat_change], 0 ; is fat changed? |
326 | |
225 | je sfc_no_change ; no |
327 | cmp [ebp+FAT.fat_change], 0; is fat changed? |
Line 226... | Line 328... | ||
226 | call write_fat_sector; yes. write it into disk |
328 | je sfc_no_change ; no |
227 | cmp [hd_error], 0 |
329 | call write_fat_sector; yes. write it into disk |
228 | jne sfc_error |
330 | jc sfc_error |
229 | 331 | ||
230 | sfc_no_change: |
332 | sfc_no_change: |
231 | mov [fat_in_cache], eax; save fat sector |
333 | mov [ebp+FAT.fat_in_cache], eax; save fat sector |
232 | call hd_read |
334 | call fs_read32_sys |
Line 233... | Line 335... | ||
233 | cmp [hd_error], 0 |
335 | test eax, eax |
234 | jne sfc_error |
336 | jne sfc_error |
Line 235... | Line 337... | ||
235 | 337 | ||
236 | 338 | ||
Line 237... | Line 339... | ||
237 | sfc_in_cache: |
339 | sfc_in_cache: |
238 | cmp [fs_type], 16 |
340 | cmp [ebp+FAT.fs_type], 16 |
239 | jne sfc_test32 |
341 | jne sfc_test32 |
- | 342 | ||
- | 343 | sfc_set16: |
|
- | 344 | xchg [ebx+esi], dx ; save new value and get old value |
|
Line 240... | Line 345... | ||
240 | 345 | jmp sfc_write |
|
241 | sfc_set16: |
346 | |
242 | xchg [ebx+esi], dx ; save new value and get old value |
347 | sfc_test32: |
- | 348 | mov eax, [ebp+FAT.fatMASK] |
|
243 | jmp sfc_write |
349 | |
244 | 350 | sfc_set32: |
|
- | 351 | and edx, eax |
|
245 | sfc_test32: |
352 | xor eax, -1 ; mask for high bits |
Line 246... | Line 353... | ||
246 | mov eax, [fatMASK] |
353 | and eax, [ebx+esi] ; get high 4 bits |
247 | 354 | or eax, edx |
|
248 | sfc_set32: |
355 | mov edx, [ebx+esi] ; get old value |
249 | and edx, eax |
356 | mov [ebx+esi], eax ; save new value |
250 | xor eax, -1 ; mask for high bits |
357 | |
251 | and eax, [ebx+esi] ; get high 4 bits |
358 | sfc_write: |
252 | or eax, edx |
359 | mov [ebp+FAT.fat_change], 1; fat has changed |
253 | mov edx, [ebx+esi] ; get old value |
360 | |
254 | mov [ebx+esi], eax ; save new value |
361 | sfc_nonzero: |
255 | 362 | and edx, [ebp+FAT.fatMASK] |
|
Line 256... | Line 363... | ||
256 | sfc_write: |
363 | |
257 | mov [fat_change], 1 ; fat has changed |
364 | sfc_return: |
Line 258... | Line 365... | ||
258 | 365 | pop esi ebx eax |
|
259 | sfc_nonzero: |
366 | ret |
260 | and edx, [fatMASK] |
367 | sfc_error: |
261 | - | ||
262 | sfc_error: |
368 | stc |
Line 263... | Line 369... | ||
263 | pop esi ebx eax |
369 | jmp sfc_return |
264 | ret |
370 | |
265 | 371 | ||
266 | 372 | get_FAT: |
|
267 | get_FAT: |
373 | ;-------------------------------- |
Line 268... | Line 374... | ||
268 | ;-------------------------------- |
374 | ; input : EAX = cluster |
269 | ; input : EAX = cluster |
375 | ; EBP = pointer to FAT structure |
270 | ; output : EAX = next cluster |
376 | ; output : EAX = next cluster |
271 | ;-------------------------------- |
377 | ;-------------------------------- |
272 | push ebx esi |
378 | ; out: CF set <=> error |
273 | 379 | push ebx esi |
|
- | 380 | ||
- | 381 | cmp [ebp+FAT.fs_type], 16 |
|
- | 382 | je gfc_1 |
|
Line 274... | Line 383... | ||
274 | cmp [fs_type], 16 |
383 | add eax, eax |
275 | je gfc_1 |
384 | gfc_1: |
276 | add eax, eax |
385 | add eax, eax |
277 | gfc_1: |
386 | mov esi, 511 |
278 | add eax, eax |
387 | and esi, eax ; esi = position in fat sector |
279 | mov esi, 511 |
388 | shr eax, 9 ; eax = fat sector |
280 | and esi, eax ; esi = position in fat sector |
389 | add eax, [ebp+FAT.FAT_START] |
281 | shr eax, 9 ; eax = fat sector |
390 | lea ebx, [ebp+FAT.fat_cache] |
282 | add eax, [FAT_START] |
391 | |
283 | mov ebx, fat_cache |
392 | cmp eax, [ebp+FAT.fat_in_cache]; is fat sector already in memory? |
284 | 393 | je gfc_in_cache |
|
285 | cmp eax, [fat_in_cache]; is fat sector already in memory? |
394 | |
Line 286... | Line 395... | ||
286 | je gfc_in_cache |
395 | cmp [ebp+FAT.fat_change], 0; is fat changed? |
287 | 396 | je gfc_no_change ; no |
|
288 | cmp [fat_change], 0 ; is fat changed? |
397 | call write_fat_sector; yes. write it into disk |
289 | je gfc_no_change ; no |
398 | jc hd_error_01 |
290 | call write_fat_sector; yes. write it into disk |
399 | |
Line 291... | Line 400... | ||
291 | cmp [hd_error], 0 |
400 | gfc_no_change: |
292 | jne hd_error_01 |
401 | mov [ebp+FAT.fat_in_cache], eax |
293 | 402 | call fs_read32_sys |
|
294 | gfc_no_change: |
- | |
295 | mov [fat_in_cache], eax |
403 | test eax, eax |
Line 296... | Line 404... | ||
296 | call hd_read |
404 | jne hd_error_01 |
297 | cmp [hd_error], 0 |
405 | |
298 | jne hd_error_01 |
406 | gfc_in_cache: |
299 | 407 | mov eax, [ebx+esi] |
|
300 | gfc_in_cache: |
408 | and eax, [ebp+FAT.fatMASK] |
301 | mov eax, [ebx+esi] |
409 | gfc_return: |
Line 302... | Line -... | ||
302 | and eax, [fatMASK] |
- | |
303 | hd_error_01: |
- | |
304 | pop esi ebx |
410 | pop esi ebx |
305 | ret |
411 | ret |
306 | 412 | hd_error_01: |
|
307 | 413 | stc |
|
Line -... | Line 414... | ||
- | 414 | jmp gfc_return |
|
- | 415 | ||
- | 416 | ||
- | 417 | get_free_FAT: |
|
308 | get_free_FAT: |
418 | ;----------------------------------------------------------- |
309 | ;----------------------------------------------------------- |
419 | ; output : if CARRY=0 EAX = # first cluster found free |
310 | ; output : if CARRY=0 EAX = # first cluster found free |
420 | ; if CARRY=1 disk full |
311 | ; if CARRY=1 disk full |
421 | ; Note : for more speed need to use fat_cache directly |
312 | ; Note : for more speed need to use fat_cache directly |
422 | ;----------------------------------------------------------- |
313 | ;----------------------------------------------------------- |
423 | push ecx |
Line 356... | Line 466... | ||
356 | ;----------------------------------------------------------- |
466 | ;----------------------------------------------------------- |
357 | ; write changed fat to disk |
467 | ; write changed fat to disk |
358 | ;----------------------------------------------------------- |
468 | ;----------------------------------------------------------- |
359 | push eax ebx ecx |
469 | push eax ebx ecx |
Line 360... | Line 470... | ||
360 | 470 | ||
361 | mov [fat_change], 0 |
471 | mov [ebp+FAT.fat_change], 0 |
362 | mov eax, [fat_in_cache] |
472 | mov eax, [ebp+FAT.fat_in_cache] |
363 | cmp eax, -1 |
473 | cmp eax, -1 |
364 | jz write_fat_not_used |
474 | jz write_fat_not_used |
365 | mov ebx, fat_cache |
475 | lea ebx, [ebp+FAT.fat_cache] |
Line 366... | Line 476... | ||
366 | mov ecx, [NUMBER_OF_FATS] |
476 | mov ecx, [ebp+FAT.NUMBER_OF_FATS] |
- | 477 | ||
367 | 478 | write_next_fat: |
|
- | 479 | push eax |
|
368 | write_next_fat: |
480 | call fs_write32_sys |
369 | call hd_write |
481 | test eax, eax |
Line 370... | Line 482... | ||
370 | cmp [hd_error], 0 |
482 | pop eax |
371 | jne write_fat_not_used |
483 | jnz write_fat_not_used |
372 | 484 | ||
Line 373... | Line 485... | ||
373 | add eax, [SECTORS_PER_FAT] |
485 | add eax, [ebp+FAT.SECTORS_PER_FAT] |
374 | dec ecx |
486 | dec ecx |
375 | jnz write_next_fat |
487 | jnz write_next_fat |
Line 376... | Line -... | ||
376 | - | ||
377 | write_fat_not_used: |
- | |
378 | pop ecx ebx eax |
- | |
379 | ret |
- | |
380 | - | ||
381 | - | ||
382 | analyze_directory: |
- | |
383 | ;----------------------------------------------------------- |
- | |
384 | ; input : EAX = first cluster of the directory |
- | |
385 | ; EBX = pointer to filename |
- | |
386 | ; output : IF CARRY=0 EAX = sector where th file is found |
- | |
387 | ; EBX = pointer in buffer |
- | |
388 | ; [buffer .. buffer+511] |
- | |
389 | ; ECX,EDX,ESI,EDI not changed |
- | |
390 | ; IF CARRY=1 filename not found |
- | |
391 | ; Note : if cluster=0 it's changed to read rootdir |
- | |
392 | ; save 2 previous directory sectors in longname_sec |
- | |
393 | ;----------------------------------------------------------- |
- | |
394 | push ecx edx esi edi ebx; ebx = [esp+0] |
- | |
395 | mov [longname_sec1], 0 |
- | |
396 | mov [longname_sec2], 0 |
- | |
397 | - | ||
398 | adr_new_cluster: |
- | |
399 | mov [cluster_tmp], eax |
- | |
400 | mov [fat16_root], 0 |
- | |
401 | cmp eax, [LAST_CLUSTER] |
- | |
402 | ja adr_not_found ; too big cluster number, something is wrong |
- | |
403 | cmp eax, 2 |
- | |
404 | jnb adr_data_cluster |
- | |
405 | - | ||
406 | mov eax, [ROOT_CLUSTER]; if cluster < 2 then read rootdir |
- | |
407 | cmp [fs_type], 16 |
- | |
408 | jne adr_data_cluster |
- | |
409 | mov eax, [ROOT_START] |
- | |
410 | mov edx, [ROOT_SECTORS] |
- | |
411 | mov [fat16_root], 1 ; flag for fat16 rootdir |
- | |
412 | jmp adr_new_sector |
- | |
413 | - | ||
414 | adr_data_cluster: |
- | |
415 | sub eax, 2 |
- | |
416 | mov edx, [SECTORS_PER_CLUSTER] |
- | |
417 | imul eax, edx |
- | |
418 | add eax, [DATA_START] |
- | |
419 | - | ||
420 | adr_new_sector: |
- | |
421 | mov ebx, buffer |
- | |
422 | call hd_read |
- | |
423 | cmp [hd_error], 0 |
- | |
424 | jne adr_not_found |
- | |
425 | - | ||
426 | mov ecx, 512/32 ; count of dir entrys per sector = 16 |
- | |
427 | - | ||
428 | adr_analyze: |
- | |
429 | mov edi, [ebx+11] ; file attribute |
- | |
430 | and edi, 0xf |
- | |
431 | cmp edi, 0xf |
- | |
432 | je adr_long_filename |
- | |
433 | test edi, 0x8 ; skip over volume label |
- | |
434 | jne adr_long_filename; Note: label can be same name as file/dir |
- | |
435 | - | ||
436 | mov esi, [esp+0] ; filename need to be uppercase |
- | |
437 | mov edi, ebx |
- | |
438 | push ecx |
- | |
439 | mov ecx, 11 |
- | |
440 | cld |
- | |
441 | rep cmpsb ; compare 8+3 filename |
- | |
442 | pop ecx |
- | |
443 | je adr_found |
- | |
444 | - | ||
445 | adr_long_filename: |
- | |
446 | add ebx, 32 ; position of next dir entry |
- | |
447 | dec ecx |
- | |
448 | jnz adr_analyze |
- | |
449 | - | ||
450 | mov ecx, [longname_sec1]; save 2 previous directory sectors |
- | |
451 | mov [longname_sec1], eax; for delete long filename |
- | |
452 | mov [longname_sec2], ecx |
- | |
453 | inc eax ; next sector |
- | |
454 | dec edx |
- | |
455 | jne adr_new_sector |
- | |
456 | cmp [fat16_root], 1 ; end of fat16 rootdir |
- | |
457 | je adr_not_found |
- | |
458 | - | ||
459 | adr_next_cluster: |
- | |
460 | mov eax, [cluster_tmp] |
- | |
461 | call get_FAT ; get next cluster |
- | |
462 | cmp [hd_error], 0 |
- | |
463 | jne adr_not_found |
- | |
464 | - | ||
465 | cmp eax, 2 ; incorrect fat chain? |
- | |
466 | jb adr_not_found ; yes |
- | |
467 | cmp eax, [fatRESERVED]; is it end of directory? |
- | |
468 | jb adr_new_cluster ; no. analyse it |
- | |
469 | - | ||
470 | adr_not_found: |
- | |
471 | pop edi edi esi edx ecx; first edi will remove ebx |
- | |
472 | stc ; file not found |
- | |
473 | ret |
- | |
474 | - | ||
475 | adr_found: |
- | |
476 | pop edi edi esi edx ecx; first edi will remove ebx |
- | |
477 | clc ; file found |
- | |
478 | ret |
- | |
479 | - | ||
480 | - | ||
481 | get_data_cluster: |
- | |
482 | ;----------------------------------------------------------- |
- | |
483 | ; input : EAX = cluster |
- | |
484 | ; EBX = pointer to buffer |
- | |
485 | ; EDX = # blocks to read in buffer |
- | |
486 | ; ESI = # blocks to skip over |
- | |
487 | ; output : if CARRY=0 ok EBX/EDX/ESI updated |
- | |
488 | ; if CARRY=1 cluster out of range |
- | |
489 | ; Note : if cluster=0 it's changed to read rootdir |
- | |
490 | ;----------------------------------------------------------- |
- | |
491 | push eax ecx |
- | |
492 | - | ||
493 | mov [fat16_root], 0 |
- | |
494 | cmp eax, [LAST_CLUSTER] |
- | |
495 | ja gdc_error ; too big cluster number, something is wrong |
- | |
496 | cmp eax, 2 |
- | |
497 | jnb gdc_cluster |
- | |
498 | - | ||
499 | mov eax, [ROOT_CLUSTER]; if cluster < 2 then read rootdir |
- | |
500 | cmp [fs_type], 16 |
- | |
501 | jne gdc_cluster |
- | |
502 | mov eax, [ROOT_START] |
- | |
503 | mov ecx, [ROOT_SECTORS]; Note: not cluster size |
- | |
504 | mov [fat16_root], 1 ; flag for fat16 rootdir |
- | |
505 | jmp gdc_read |
- | |
506 | - | ||
507 | gdc_cluster: |
- | |
508 | sub eax, 2 |
- | |
509 | mov ecx, [SECTORS_PER_CLUSTER] |
- | |
510 | imul eax, ecx |
- | |
511 | add eax, [DATA_START] |
- | |
512 | - | ||
513 | gdc_read: |
- | |
514 | test esi, esi ; first wanted block |
- | |
515 | je gdcl1 ; yes, skip count is 0 |
- | |
516 | dec esi |
- | |
517 | jmp gdcl2 |
- | |
518 | - | ||
519 | gdcl1: |
- | |
520 | call hd_read |
- | |
521 | cmp [hd_error], 0 |
- | |
522 | jne gdc_error |
- | |
523 | - | ||
524 | add ebx, 512 ; update pointer |
- | |
525 | dec edx |
- | |
526 | - | ||
527 | gdcl2: |
- | |
Line 528... | Line -... | ||
528 | test edx, edx ; is all read? |
- | |
529 | je out_of_read |
- | |
530 | - | ||
531 | inc eax ; next sector |
- | |
532 | dec ecx |
- | |
533 | jnz gdc_read |
- | |
534 | - | ||
535 | out_of_read: |
- | |
536 | pop ecx eax |
- | |
537 | clc |
- | |
538 | ret |
- | |
539 | - | ||
540 | gdc_error: |
- | |
541 | pop ecx eax |
- | |
542 | stc |
- | |
543 | ret |
- | |
544 | - | ||
545 | - | ||
546 | get_cluster_of_a_path: |
- | |
547 | ;--------------------------------------------------------- |
- | |
548 | ; input : EBX = pointer to a path string |
- | |
549 | ; (example: the path "/files/data/document" become |
- | |
550 | ; "files......data.......document...0" |
- | |
551 | ; '.' = space char |
- | |
552 | ; '0' = char(0) (ASCII=0) !!! ) |
- | |
553 | ; output : if (CARRY=1) -> ERROR in the PATH |
- | |
554 | ; if (CARRY=0) -> EAX=cluster |
- | |
555 | ;--------------------------------------------------------- |
- | |
556 | push ebx edx |
- | |
557 | - | ||
558 | mov eax, [ROOT_CLUSTER] |
- | |
559 | mov edx, ebx |
- | |
560 | - | ||
561 | search_end_of_path: |
- | |
562 | cmp byte [edx], 0 |
- | |
563 | je found_end_of_path |
- | |
564 | - | ||
565 | inc edx; '/' |
- | |
566 | mov ebx, edx |
- | |
567 | call analyze_directory |
- | |
568 | jc directory_not_found |
- | |
569 | - | ||
570 | mov eax, [ebx+20-2] ; read the HIGH 16bit cluster field |
- | |
571 | mov ax, [ebx+26] ; read the LOW 16bit cluster field |
- | |
572 | and eax, [fatMASK] |
- | |
573 | add edx, 11 ; 8+3 (name+extension) |
- | |
574 | jmp search_end_of_path |
- | |
575 | - | ||
576 | found_end_of_path: |
- | |
577 | pop edx ebx |
- | |
Line 578... | Line 488... | ||
578 | clc ; no errors |
488 | |
579 | ret |
489 | write_fat_not_used: |
580 | 490 | pop ecx ebx eax |
|
Line 674... | Line 584... | ||
674 | ; Note : negative = remove clusters from free space |
584 | ; Note : negative = remove clusters from free space |
675 | ; positive = add clusters to free space |
585 | ; positive = add clusters to free space |
676 | ;----------------------------------------------------- |
586 | ;----------------------------------------------------- |
677 | test ecx, ecx ; no change |
587 | test ecx, ecx ; no change |
678 | je add_dfs_no |
588 | je add_dfs_no |
679 | cmp [fs_type], 32 ; free disk space only used by fat32 |
589 | cmp [ebp+FAT.fs_type], 32 ; free disk space only used by fat32 |
680 | jne add_dfs_no |
590 | jne add_dfs_no |
Line 681... | Line 591... | ||
681 | 591 | ||
682 | push eax ebx |
592 | push eax ebx |
683 | mov eax, [ADR_FSINFO] |
593 | mov eax, [ebp+FAT.ADR_FSINFO] |
684 | mov ebx, fsinfo_buffer |
594 | lea ebx, [ebp+FAT.fsinfo_buffer] |
685 | call hd_read |
595 | call fs_read32_sys |
686 | cmp [hd_error], 0 |
596 | test eax, eax |
Line 687... | Line 597... | ||
687 | jne add_not_fs |
597 | jnz add_not_fs |
688 | 598 | ||
Line 689... | Line 599... | ||
689 | cmp dword [ebx+0x1fc], 0xaa550000; check sector id |
599 | cmp dword [ebx+0x1fc], 0xaa550000; check sector id |
690 | jne add_not_fs |
600 | jne add_not_fs |
691 | 601 | ||
692 | add [ebx+0x1e8], ecx |
602 | add [ebx+0x1e8], ecx |
693 | push [fatStartScan] |
603 | push [ebp+FAT.fatStartScan] |
694 | pop dword [ebx+0x1ec] |
604 | pop dword [ebx+0x1ec] |
Line 695... | Line 605... | ||
695 | call hd_write |
605 | mov eax, [ebp+FAT.ADR_FSINFO] |
696 | ; cmp [hd_error],0 |
606 | call fs_write32_sys |
Line 697... | Line 607... | ||
697 | ; jne add_not_fs |
607 | ; jc add_not_fs |
698 | 608 | ||
Line 699... | Line -... | ||
699 | add_not_fs: |
- | |
700 | pop ebx eax |
- | |
701 | - | ||
702 | add_dfs_no: |
- | |
703 | ret |
- | |
704 | - | ||
705 | - | ||
706 | file_read: |
- | |
707 | ;-------------------------------------------------------------------------- |
- | |
708 | ; INPUT : user-register register-in-this meaning symbol-in-this |
- | |
709 | ; |
- | |
710 | ; EAX EDI system call to write / |
- | |
711 | ; EBX EAX (PAR0) pointer to file-name PAR0 |
- | |
712 | ; EDX ECX (PAR1) pointer to buffer PAR1 |
- | |
713 | ; ECX EBX (PAR2) vt file blocks to read PAR2 |
- | |
714 | ; ESI EDX (PAR3) pointer to path PAR3 |
- | |
715 | ; EDI ESI vt first 512 block to read |
- | |
716 | ; EDI if 0 - read root |
- | |
717 | ; |
- | |
718 | ; output : eax = 0 - ok |
- | |
719 | ; 3 - unknown FS |
- | |
720 | ; 5 - file not found |
- | |
721 | ; 6 - end of file |
- | |
722 | ; 9 - fat table corrupted |
- | |
723 | ; 10 - access denied |
- | |
724 | ; ebx = size of file/directory |
- | |
725 | ;-------------------------------------------------------------------------- |
- | |
726 | cmp [fs_type], 16 |
- | |
727 | jz fat_ok_for_reading |
- | |
728 | cmp [fs_type], 32 |
- | |
729 | jz fat_ok_for_reading |
- | |
730 | xor ebx, ebx |
- | |
731 | mov eax, ERROR_UNKNOWN_FS |
- | |
732 | mov [hd1_status], ebx |
- | |
733 | ret |
- | |
734 | - | ||
735 | fat_ok_for_reading: |
- | |
736 | ; call reserve_hd1 |
- | |
737 | - | ||
738 | pushad |
- | |
739 | - | ||
740 | mov ebx, edx |
- | |
741 | call get_cluster_of_a_path |
- | |
742 | jc file_to_read_not_found |
- | |
743 | - | ||
744 | test edi, edi ; read rootdir |
- | |
745 | jne no_read_root |
- | |
746 | - | ||
747 | xor eax, eax |
- | |
748 | call get_dir_size ; return rootdir size |
- | |
749 | cmp [hd_error], 0 |
- | |
750 | jne file_access_denied |
- | |
751 | - | ||
752 | mov [file_size], eax |
- | |
753 | mov eax, [ROOT_CLUSTER] |
- | |
754 | jmp file_read_start |
- | |
755 | - | ||
756 | no_read_root: |
- | |
757 | mov ebx, PUSHAD_EAX ; file name |
- | |
758 | call analyze_directory |
- | |
759 | jc file_to_read_not_found |
- | |
760 | - | ||
761 | mov eax, [ebx+28] ; file size |
- | |
762 | test byte [ebx+11], 0x10; is it directory? |
- | |
763 | jz read_set_size ; no |
- | |
764 | - | ||
765 | mov eax, [ebx+20-2] ; FAT entry |
- | |
766 | mov ax, [ebx+26] |
- | |
767 | and eax, [fatMASK] |
- | |
768 | call get_dir_size |
- | |
769 | cmp [hd_error], 0 |
- | |
770 | jne file_access_denied |
- | |
771 | - | ||
772 | read_set_size: |
- | |
773 | mov [file_size], eax |
- | |
774 | - | ||
775 | mov eax, [ebx+20-2] ; FAT entry |
- | |
776 | mov ax, [ebx+26] |
- | |
777 | and eax, [fatMASK] |
- | |
778 | - | ||
779 | file_read_start: |
- | |
780 | mov ebx, PUSHAD_ECX ; pointer to buffer |
- | |
781 | mov edx, PUSHAD_EBX ; file blocks to read |
- | |
782 | mov esi, PUSHAD_ESI ; first 512 block to read |
- | |
783 | - | ||
784 | file_read_new_cluster: |
- | |
785 | call get_data_cluster |
- | |
786 | jc file_read_eof ; end of file or cluster out of range |
- | |
787 | - | ||
788 | test edx, edx ; is all read? |
- | |
789 | je file_read_OK ; yes |
- | |
790 | - | ||
791 | call get_FAT ; get next cluster |
- | |
792 | cmp [hd_error], 0 |
- | |
793 | jne file_access_denied |
- | |
794 | - | ||
795 | cmp eax, [fatRESERVED]; end of file |
- | |
796 | jnb file_read_eof |
- | |
797 | cmp eax, 2 ; incorrect fat chain |
- | |
798 | jnb file_read_new_cluster |
- | |
799 | - | ||
800 | popad |
- | |
801 | mov [hd1_status], 0 |
- | |
802 | mov ebx, [file_size] |
- | |
803 | mov eax, ERROR_FAT_TABLE |
- | |
804 | ret |
- | |
805 | - | ||
806 | file_read_eof: |
- | |
807 | cmp [hd_error], 0 |
- | |
808 | jne file_access_denied |
- | |
809 | popad |
- | |
810 | mov [hd1_status], 0 |
- | |
811 | mov ebx, [file_size] |
- | |
812 | mov eax, ERROR_END_OF_FILE |
- | |
813 | ret |
- | |
814 | - | ||
815 | file_read_OK: |
- | |
816 | popad |
- | |
817 | mov [hd1_status], 0 |
- | |
818 | mov ebx, [file_size] |
- | |
819 | xor eax, eax |
- | |
820 | ret |
- | |
821 | - | ||
822 | file_to_read_not_found: |
- | |
823 | cmp [hd_error], 0 |
- | |
824 | jne file_access_denied |
- | |
825 | popad |
- | |
826 | mov [hd1_status], 0 |
- | |
827 | xor ebx, ebx |
- | |
828 | mov eax, ERROR_FILE_NOT_FOUND |
- | |
829 | ret |
- | |
830 | - | ||
831 | file_access_denied: |
- | |
832 | popad |
- | |
833 | mov [hd1_status], 0 |
- | |
834 | xor ebx, ebx |
- | |
835 | mov eax, ERROR_ACCESS_DENIED |
- | |
836 | ret |
- | |
837 | - | ||
838 | get_dir_size: |
- | |
839 | ;----------------------------------------------------- |
- | |
840 | ; input : eax = first cluster (0=rootdir) |
- | |
841 | ; output : eax = directory size in bytes |
- | |
842 | ;----------------------------------------------------- |
- | |
843 | push edx |
- | |
844 | xor edx, edx ; count of directory clusters |
- | |
845 | test eax, eax |
- | |
846 | jnz dir_size_next |
- | |
847 | - | ||
848 | mov eax, [ROOT_SECTORS] |
- | |
849 | shl eax, 9 ; fat16 rootdir size in bytes |
- | |
850 | cmp [fs_type], 16 |
- | |
851 | je dir_size_ret |
- | |
852 | mov eax, [ROOT_CLUSTER] |
- | |
853 | - | ||
854 | dir_size_next: |
- | |
855 | cmp eax, 2 ; incorrect fat chain |
- | |
856 | jb dir_size_end |
- | |
857 | cmp eax, [fatRESERVED]; end of directory |
- | |
858 | ja dir_size_end |
- | |
859 | call get_FAT ; get next cluster |
- | |
860 | cmp [hd_error], 0 |
- | |
861 | jne dir_size_ret |
- | |
862 | - | ||
863 | inc edx |
- | |
864 | jmp dir_size_next |
- | |
865 | - | ||
866 | dir_size_end: |
- | |
Line 867... | Line 609... | ||
867 | imul eax, [SECTORS_PER_CLUSTER], 512; cluster size in bytes |
609 | add_not_fs: |
868 | imul eax, edx |
610 | pop ebx eax |
869 | 611 | ||
870 | dir_size_ret: |
612 | add_dfs_no: |
871 | pop edx |
613 | ret |
872 | ret |
614 | |
Line 873... | Line 615... | ||
873 | 615 | ||
874 | 616 | ||
875 | clear_cluster_chain: |
617 | clear_cluster_chain: |
876 | ;----------------------------------------------------- |
618 | ;----------------------------------------------------- |
877 | ; input : eax = first cluster |
619 | ; input : eax = first cluster |
878 | ;----------------------------------------------------- |
620 | ;----------------------------------------------------- |
879 | push eax ecx edx |
621 | push eax ecx edx |
Line 880... | Line 622... | ||
880 | xor ecx, ecx ; cluster count |
622 | xor ecx, ecx ; cluster count |
881 | 623 | ||
882 | clean_new_chain: |
- | |
883 | cmp eax, [LAST_CLUSTER]; end of file |
624 | clean_new_chain: |
Line 884... | Line 625... | ||
884 | ja delete_OK |
625 | cmp eax, [ebp+FAT.LAST_CLUSTER]; end of file |
885 | cmp eax, 2 ; unfinished fat chain or zero length file |
626 | ja delete_OK |
886 | jb delete_OK |
627 | cmp eax, 2 ; unfinished fat chain or zero length file |
Line 887... | Line 628... | ||
887 | cmp eax, [ROOT_CLUSTER]; don't remove root cluster |
628 | jb delete_OK |
888 | jz delete_OK |
629 | cmp eax, [ebp+FAT.ROOT_CLUSTER]; don't remove root cluster |
- | 630 | jz delete_OK |
|
889 | 631 | ||
890 | xor edx, edx |
632 | xor edx, edx |
891 | call set_FAT ; clear fat entry |
633 | call set_FAT ; clear fat entry |
Line -... | Line 634... | ||
- | 634 | jc access_denied_01 |
|
892 | cmp [hd_error], 0 |
635 | |
893 | jne access_denied_01 |
636 | inc ecx ; update cluster count |
894 | 637 | mov eax, edx ; old cluster |
|
895 | inc ecx ; update cluster count |
638 | jmp clean_new_chain |
896 | mov eax, edx ; old cluster |
639 | |
897 | jmp clean_new_chain |
640 | delete_OK: |
898 | 641 | call add_disk_free_space; add clusters to free disk space |
|
899 | delete_OK: |
642 | clc |
900 | call add_disk_free_space; add clusters to free disk space |
643 | access_denied_01: |
901 | access_denied_01: |
644 | pop edx ecx eax |
902 | pop edx ecx eax |
645 | ret |
903 | ret |
646 | |
904 | 647 | ||
905 | 648 | if 0 |
|
906 | get_hd_info: |
649 | get_hd_info: |
907 | ;----------------------------------------------------------- |
650 | ;----------------------------------------------------------- |
908 | ; output : eax = 0 - ok |
651 | ; output : eax = 0 - ok |
Line 925... | Line 668... | ||
925 | info_fat_ok: |
668 | info_fat_ok: |
926 | ; call reserve_hd1 |
669 | ; call reserve_hd1 |
Line 927... | Line 670... | ||
927 | 670 | ||
928 | xor ecx, ecx ; count of free clusters |
671 | xor ecx, ecx ; count of free clusters |
929 | mov eax, 2 |
672 | mov eax, 2 |
Line 930... | Line 673... | ||
930 | mov ebx, [LAST_CLUSTER] |
673 | mov ebx, [ebp+FAT.LAST_CLUSTER] |
931 | 674 | ||
932 | info_cluster: |
675 | info_cluster: |
933 | push eax |
- | |
934 | call get_FAT ; get cluster info |
676 | push eax |
Line 935... | Line 677... | ||
935 | cmp [hd_error], 0 |
677 | call get_FAT ; get cluster info |
936 | jne info_access_denied |
678 | jc info_access_denied |
937 | 679 | ||
Line 944... | Line 686... | ||
944 | inc eax |
686 | inc eax |
945 | cmp eax, ebx ; is above last cluster? |
687 | cmp eax, ebx ; is above last cluster? |
946 | jbe info_cluster ; no. test next cluster |
688 | jbe info_cluster ; no. test next cluster |
Line 947... | Line 689... | ||
947 | 689 | ||
948 | dec ebx ; cluster count |
690 | dec ebx ; cluster count |
949 | imul edx, [SECTORS_PER_CLUSTER], 512; cluster size in bytes |
- | |
950 | mov [hd1_status], 0 |
691 | imul edx, [ebp+FAT.SECTORS_PER_CLUSTER], 512; cluster size in bytes |
951 | xor eax, eax |
692 | xor eax, eax |
Line 952... | Line 693... | ||
952 | ret |
693 | ret |
953 | 694 | ||
954 | info_access_denied: |
695 | info_access_denied: |
955 | add esp, 4 |
696 | add esp, 4 |
956 | xor edx, edx |
697 | xor edx, edx |
957 | xor ebx, ebx |
698 | xor ebx, ebx |
958 | xor ecx, ecx |
699 | xor ecx, ecx |
- | 700 | mov eax, ERROR_ACCESS_DENIED |
|
Line 959... | Line 701... | ||
959 | mov eax, ERROR_ACCESS_DENIED |
701 | ret |
960 | ret |
702 | end if |
961 | 703 | ||
962 | update_disk: |
704 | update_disk: |
963 | ;----------------------------------------------------------- |
705 | ;----------------------------------------------------------- |
964 | ; write changed fat and cache to disk |
706 | ; write changed fat and cache to disk |
Line 965... | Line 707... | ||
965 | ;----------------------------------------------------------- |
707 | ;----------------------------------------------------------- |
966 | cmp [fat_change], 0 ; is fat changed? |
- | |
967 | je upd_no_change |
708 | cmp [ebp+FAT.fat_change], 0 ; is fat changed? |
Line 968... | Line 709... | ||
968 | 709 | je upd_no_change |
|
Line -... | Line 710... | ||
- | 710 | ||
- | 711 | call write_fat_sector |
|
969 | call write_fat_sector |
712 | jc update_disk_acces_denied |
- | 713 | ||
970 | cmp [hd_error], 0 |
714 | upd_no_change: |
971 | jne update_disk_acces_denied |
715 | |
Line -... | Line 716... | ||
- | 716 | push esi |
|
- | 717 | mov esi, [ebp+PARTITION.Disk] |
|
- | 718 | call disk_sync |
|
- | 719 | pop esi |
|
- | 720 | update_disk_acces_denied: |
|
- | 721 | ret |
|
Line 972... | Line 722... | ||
972 | 722 | ||
973 | upd_no_change: |
723 | fat_lock: |
- | 724 | lea ecx, [ebp+FAT.Lock] |
|
974 | 725 | jmp mutex_lock |
|
975 | call write_cache |
726 | fat_unlock: |
976 | update_disk_acces_denied: |
727 | lea ecx, [ebp+FAT.Lock] |
977 | ret |
728 | jmp mutex_unlock |
978 | 729 | ||
979 | 730 | ; \begin{diamond} |
|
980 | ; \begin{diamond} |
731 | hd_find_lfn: |
981 | hd_find_lfn: |
732 | ; in: ebp -> FAT structure |
982 | ; in: esi+ebp -> name |
733 | ; in: esi+[esp+4] -> name |
983 | ; out: CF=1 - file not found |
734 | ; out: CF=1 - file not found, eax=error code |
984 | ; else CF=0 and edi->direntry, eax=sector |
735 | ; else CF=0 and edi->direntry, eax=sector |
985 | ; destroys eax |
736 | ; destroys eax |
986 | push esi edi |
737 | push esi edi |
987 | push 0 |
738 | push 0 |
988 | push 0 |
739 | push 0 |
989 | push fat16_root_first |
740 | push fat16_root_first |
Line 1009... | Line 760... | ||
1009 | jmp .loop |
760 | jmp .loop |
1010 | .notfound: |
761 | .notfound: |
1011 | add esp, 16 |
762 | add esp, 16 |
1012 | pop edi esi |
763 | pop edi esi |
1013 | stc |
764 | stc |
1014 | ret |
765 | ret 4 |
1015 | .found: |
766 | .found: |
1016 | test ebp, ebp |
767 | lea eax, [esp+4+24] |
- | 768 | cmp dword [eax], 0 |
|
1017 | jz @f |
769 | jz @f |
1018 | mov esi, ebp |
770 | mov esi, [eax] |
1019 | xor ebp, ebp |
771 | and dword [eax], 0 |
1020 | jmp .continue |
772 | jmp .continue |
1021 | @@: |
773 | @@: |
1022 | lea eax, [esp+8] |
774 | lea eax, [esp+8] |
1023 | cmp dword [eax], 0 |
775 | cmp dword [eax], 0 |
1024 | jz .root |
776 | jz .root |
1025 | call fat_get_sector |
777 | call fat_get_sector |
1026 | jmp .cmn |
778 | jmp .cmn |
1027 | .root: |
779 | .root: |
1028 | mov eax, [eax+4] |
780 | mov eax, [eax+4] |
1029 | add eax, [ROOT_START] |
781 | add eax, [ebp+FAT.ROOT_START] |
1030 | .cmn: |
782 | .cmn: |
1031 | add esp, 20 ; CF=0 |
783 | add esp, 20 ; CF=0 |
1032 | pop esi |
784 | pop esi |
1033 | ret |
785 | ret 4 |
Line 1034... | Line 786... | ||
1034 | 786 | ||
1035 | ;---------------------------------------------------------------- |
787 | ;---------------------------------------------------------------- |
1036 | ; |
788 | ; |
1037 | ; fs_HdRead - LFN variant for reading hard disk |
789 | ; fs_HdRead - LFN variant for reading hard disk |
- | 790 | ; |
|
- | 791 | ; Obsolete, will be replaced with filesystem-specific functions. |
|
1038 | ; |
792 | ; |
1039 | ; esi points to filename |
793 | ; esi points to filename |
1040 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
794 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1041 | ; may be ebx=0 - start from first byte |
795 | ; may be ebx=0 - start from first byte |
1042 | ; ecx number of bytes to read, 0+ |
796 | ; ecx number of bytes to read, 0+ |
Line 1057... | Line 811... | ||
1057 | jz ext2_HdRead |
811 | jz ext2_HdRead |
1058 | or ebx, -1 |
812 | or ebx, -1 |
1059 | mov eax, ERROR_UNKNOWN_FS |
813 | mov eax, ERROR_UNKNOWN_FS |
1060 | ret |
814 | ret |
1061 | @@: |
815 | @@: |
- | 816 | sub ebx, 4 |
|
- | 817 | push ebp |
|
- | 818 | mov ebp, [fs_dependent_data_start.partition] |
|
- | 819 | call fat_Read |
|
- | 820 | pop ebp |
|
- | 821 | ret |
|
- | 822 | ||
- | 823 | ;---------------------------------------------------------------- |
|
- | 824 | ; fat_Read - FAT16/32 implementation of reading a file |
|
- | 825 | ; in: ebp = pointer to FAT structure |
|
- | 826 | ; in: esi+[esp+4] = name |
|
- | 827 | ; in: ebx = pointer to parameters from sysfunc 70 |
|
- | 828 | ; out: eax, ebx = return values for sysfunc 70 |
|
- | 829 | ;---------------------------------------------------------------- |
|
- | 830 | fat_Read: |
|
- | 831 | call fat_lock |
|
1062 | push edi |
832 | push edi |
1063 | cmp byte [esi], 0 |
833 | cmp byte [esi], 0 |
1064 | jnz @f |
834 | jnz @f |
1065 | .noaccess: |
835 | .noaccess: |
1066 | pop edi |
836 | pop edi |
1067 | .noaccess_2: |
837 | .noaccess_2: |
- | 838 | call fat_unlock |
|
1068 | or ebx, -1 |
839 | or ebx, -1 |
1069 | mov eax, ERROR_ACCESS_DENIED |
840 | mov eax, ERROR_ACCESS_DENIED |
1070 | ret |
841 | ret |
Line 1071... | Line 842... | ||
1071 | 842 | ||
1072 | @@: |
843 | @@: |
1073 | call hd_find_lfn |
844 | stdcall hd_find_lfn, [esp+4+4] |
1074 | jnc .found |
845 | jnc .found |
- | 846 | pop edi |
|
1075 | pop edi |
847 | push eax |
1076 | cmp [hd_error], 0 |
848 | call fat_unlock |
1077 | jne .noaccess_2 |
849 | pop eax |
1078 | or ebx, -1 |
- | |
1079 | mov eax, ERROR_FILE_NOT_FOUND |
850 | or ebx, -1 |
Line 1080... | Line 851... | ||
1080 | ret |
851 | ret |
1081 | 852 | ||
1082 | .found: |
853 | .found: |
1083 | test byte [edi+11], 0x10; do not allow read directories |
- | |
1084 | jnz .noaccess |
- | |
1085 | test ebx, ebx |
854 | test byte [edi+11], 0x10; do not allow read directories |
1086 | jz .l1 |
855 | jnz .noaccess |
1087 | cmp dword [ebx+4], 0 |
856 | cmp dword [ebx+8], 0 |
1088 | jz @f |
857 | jz @f |
1089 | xor ebx, ebx |
858 | xor ebx, ebx |
- | 859 | .reteof: |
|
1090 | .reteof: |
860 | call fat_unlock |
1091 | mov eax, 6 |
861 | mov eax, ERROR_END_OF_FILE |
1092 | pop edi |
862 | pop edi |
1093 | ret |
863 | ret |
1094 | @@: |
- | |
- | 864 | @@: |
|
- | 865 | mov ecx, [ebx+12] ; size |
|
1095 | mov ebx, [ebx] |
866 | mov edx, [ebx+16] ; pointer |
1096 | .l1: |
867 | mov ebx, [ebx+4] ; file offset |
1097 | push ecx edx |
868 | push edx |
1098 | push 0 |
869 | push 0 |
1099 | mov eax, [edi+28] |
870 | mov eax, [edi+28] |
1100 | sub eax, ebx |
871 | sub eax, ebx |
Line 1107... | Line 878... | ||
1107 | mov eax, [edi+20-2] |
878 | mov eax, [edi+20-2] |
1108 | mov ax, [edi+26] |
879 | mov ax, [edi+26] |
1109 | ; now eax=cluster, ebx=position, ecx=count, edx=buffer for data |
880 | ; now eax=cluster, ebx=position, ecx=count, edx=buffer for data |
1110 | .new_cluster: |
881 | .new_cluster: |
1111 | jecxz .new_sector |
882 | jecxz .new_sector |
1112 | test eax, eax |
883 | cmp eax, 2 |
1113 | jz .eof |
884 | jb .eof |
1114 | cmp eax, [fatRESERVED] |
885 | cmp eax, [ebp+FAT.fatRESERVED] |
1115 | jae .eof |
886 | jae .eof |
1116 | mov [cluster_tmp], eax |
887 | mov [ebp+FAT.cluster_tmp], eax |
1117 | dec eax |
888 | dec eax |
1118 | dec eax |
889 | dec eax |
1119 | mov edi, [SECTORS_PER_CLUSTER] |
890 | mov edi, [ebp+FAT.SECTORS_PER_CLUSTER] |
1120 | imul eax, edi |
891 | imul eax, edi |
1121 | add eax, [DATA_START] |
892 | add eax, [ebp+FAT.DATA_START] |
1122 | .new_sector: |
893 | .new_sector: |
1123 | test ecx, ecx |
894 | test ecx, ecx |
1124 | jz .done |
895 | jz .done |
1125 | sub ebx, 512 |
896 | sub ebx, 512 |
1126 | jae .skip |
897 | jae .skip |
1127 | add ebx, 512 |
898 | add ebx, 512 |
1128 | jnz .force_buf |
899 | jnz .force_buf |
1129 | cmp ecx, 512 |
900 | cmp ecx, 512 |
1130 | jb .force_buf |
901 | jb .force_buf |
1131 | ; we may read directly to given buffer |
902 | ; we may read directly to given buffer |
1132 | push ebx |
903 | push eax ebx |
1133 | mov ebx, edx |
904 | mov ebx, edx |
1134 | call hd_read |
905 | call fs_read32_app |
1135 | pop ebx |
906 | test eax, eax |
1136 | cmp [hd_error], 0 |
907 | pop ebx eax |
1137 | jne .noaccess_1 |
908 | jne .noaccess_1 |
1138 | add edx, 512 |
909 | add edx, 512 |
1139 | sub ecx, 512 |
910 | sub ecx, 512 |
1140 | jmp .skip |
911 | jmp .skip |
1141 | .force_buf: |
912 | .force_buf: |
1142 | ; we must read sector to temporary buffer and then copy it to destination |
913 | ; we must read sector to temporary buffer and then copy it to destination |
1143 | push eax ebx |
914 | push eax ebx |
1144 | mov ebx, buffer |
915 | lea ebx, [ebp+FAT.buffer] |
1145 | call hd_read |
916 | call fs_read32_app |
- | 917 | test eax, eax |
|
1146 | mov eax, ebx |
918 | mov eax, ebx |
1147 | pop ebx |
919 | pop ebx |
1148 | cmp [hd_error], 0 |
- | |
1149 | jne .noaccess_3 |
920 | jne .noaccess_3 |
1150 | add eax, ebx |
921 | add eax, ebx |
1151 | push ecx |
922 | push ecx |
1152 | add ecx, ebx |
923 | add ecx, ebx |
1153 | cmp ecx, 512 |
924 | cmp ecx, 512 |
Line 1164... | Line 935... | ||
1164 | xor ebx, ebx |
935 | xor ebx, ebx |
1165 | .skip: |
936 | .skip: |
1166 | inc eax |
937 | inc eax |
1167 | dec edi |
938 | dec edi |
1168 | jnz .new_sector |
939 | jnz .new_sector |
1169 | mov eax, [cluster_tmp] |
940 | mov eax, [ebp+FAT.cluster_tmp] |
1170 | call get_FAT |
941 | call get_FAT |
1171 | cmp [hd_error], 0 |
- | |
1172 | jne .noaccess_1 |
942 | jc .noaccess_1 |
Line 1173... | Line 943... | ||
1173 | 943 | ||
1174 | jmp .new_cluster |
944 | jmp .new_cluster |
1175 | .noaccess_3: |
945 | .noaccess_3: |
1176 | pop eax |
946 | pop eax |
1177 | .noaccess_1: |
947 | .noaccess_1: |
1178 | pop eax |
948 | pop eax |
1179 | push 11 |
949 | push ERROR_DEVICE |
1180 | .done: |
950 | .done: |
- | 951 | mov ebx, edx |
|
1181 | mov ebx, edx |
952 | call fat_unlock |
1182 | pop eax edx ecx edi |
953 | pop eax edx edi |
1183 | sub ebx, edx |
954 | sub ebx, edx |
1184 | ret |
955 | ret |
1185 | .eof: |
956 | .eof: |
1186 | mov ebx, edx |
957 | mov ebx, edx |
1187 | pop eax edx ecx |
958 | pop eax edx |
1188 | sub ebx, edx |
959 | sub ebx, edx |
Line 1189... | Line 960... | ||
1189 | jmp .reteof |
960 | jmp .reteof |
1190 | 961 | ||
1191 | ;---------------------------------------------------------------- |
962 | ;---------------------------------------------------------------- |
1192 | ; |
963 | ; |
- | 964 | ; fs_HdReadFolder - LFN variant for reading hard disk folder |
|
- | 965 | ; |
|
1193 | ; fs_HdReadFolder - LFN variant for reading hard disk folder |
966 | ; Obsolete, will be replaced with filesystem-specific functions. |
1194 | ; |
967 | ; |
1195 | ; esi points to filename |
968 | ; esi points to filename |
1196 | ; ebx pointer to structure 32-bit number = first wanted block, 0+ |
969 | ; ebx pointer to structure 32-bit number = first wanted block, 0+ |
1197 | ; & flags (bitfields) |
970 | ; & flags (bitfields) |
Line 1202... | Line 975... | ||
1202 | ; ret ebx = blocks read or 0xffffffff folder not found |
975 | ; ret ebx = blocks read or 0xffffffff folder not found |
1203 | ; eax = 0 ok read or other = errormsg |
976 | ; eax = 0 ok read or other = errormsg |
1204 | ; |
977 | ; |
1205 | ;-------------------------------------------------------------- |
978 | ;-------------------------------------------------------------- |
1206 | fs_HdReadFolder: |
979 | fs_HdReadFolder: |
1207 | cmp [fs_type], 1 |
- | |
1208 | jz ntfs_HdReadFolder |
- | |
1209 | cmp [fs_type], 2 |
- | |
1210 | jz ext2_HdReadFolder |
- | |
1211 | cmp [fs_type], 16 |
980 | cmp [fs_type], 16 |
1212 | jz @f |
981 | jz @f |
1213 | cmp [fs_type], 32 |
982 | cmp [fs_type], 32 |
1214 | jz @f |
983 | jz @f |
- | 984 | cmp [fs_type], 1 |
|
- | 985 | jz ntfs_HdReadFolder |
|
- | 986 | cmp [fs_type], 2 |
|
- | 987 | jz ext2_HdReadFolder |
|
1215 | push ERROR_UNSUPPORTED_FS |
988 | push ERROR_UNSUPPORTED_FS |
1216 | pop eax |
989 | pop eax |
1217 | or ebx, -1 |
990 | or ebx, -1 |
1218 | ret |
991 | ret |
1219 | @@: |
992 | @@: |
- | 993 | sub ebx, 4 |
|
- | 994 | push ebp |
|
- | 995 | mov ebp, [fs_dependent_data_start.partition] |
|
- | 996 | call fat_ReadFolder |
|
- | 997 | pop ebp |
|
- | 998 | ret |
|
- | 999 | ||
- | 1000 | ;---------------------------------------------------------------- |
|
- | 1001 | ; fat_ReadFolder - FAT16/32 implementation of reading a folder |
|
- | 1002 | ; in: ebp = pointer to FAT structure |
|
- | 1003 | ; in: esi+[esp+4] = name |
|
- | 1004 | ; in: ebx = pointer to parameters from sysfunc 70 |
|
- | 1005 | ; out: eax, ebx = return values for sysfunc 70 |
|
- | 1006 | ;---------------------------------------------------------------- |
|
- | 1007 | fat_ReadFolder: |
|
- | 1008 | call fat_lock |
|
1220 | mov eax, [ROOT_CLUSTER] |
1009 | mov eax, [ebp+FAT.ROOT_CLUSTER] |
1221 | push edi |
1010 | push edi |
1222 | cmp byte [esi], 0 |
1011 | cmp byte [esi], 0 |
1223 | jz .doit |
1012 | jz .doit |
1224 | call hd_find_lfn |
1013 | stdcall hd_find_lfn, [esp+4+4] |
1225 | jnc .found |
1014 | jnc .found |
1226 | pop edi |
1015 | pop edi |
- | 1016 | push eax |
|
- | 1017 | call fat_unlock |
|
- | 1018 | pop eax |
|
1227 | or ebx, -1 |
1019 | or ebx, -1 |
1228 | mov eax, ERROR_FILE_NOT_FOUND |
- | |
1229 | ret |
1020 | ret |
1230 | .found: |
1021 | .found: |
1231 | test byte [edi+11], 0x10 ; do not allow read files |
1022 | test byte [edi+11], 0x10 ; do not allow read files |
1232 | jnz .found_dir |
1023 | jnz .found_dir |
1233 | pop edi |
1024 | pop edi |
- | 1025 | call fat_unlock |
|
1234 | or ebx, -1 |
1026 | or ebx, -1 |
1235 | mov eax, ERROR_ACCESS_DENIED |
1027 | mov eax, ERROR_ACCESS_DENIED |
1236 | ret |
1028 | ret |
1237 | .found_dir: |
1029 | .found_dir: |
1238 | mov eax, [edi+20-2] |
1030 | mov eax, [edi+20-2] |
1239 | mov ax, [edi+26] ; eax=cluster |
1031 | mov ax, [edi+26] ; eax=cluster |
1240 | .doit: |
1032 | .doit: |
1241 | push esi ecx |
- | |
1242 | push ebp |
1033 | push esi |
1243 | sub esp, 262*2 ; reserve space for LFN |
1034 | sub esp, 262*2 ; reserve space for LFN |
1244 | mov ebp, esp |
- | |
1245 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE name |
1035 | push dword [ebx+8] ; for fat_get_name: read ANSI/UNICODE name |
1246 | mov ebx, [ebx] |
1036 | mov edx, [ebx+16] ; pointer to buffer |
1247 | ; init header |
1037 | ; init header |
1248 | push eax ecx |
1038 | push eax |
1249 | mov edi, edx |
1039 | mov edi, edx |
1250 | mov ecx, 32/4 |
1040 | mov ecx, 32/4 |
1251 | xor eax, eax |
1041 | xor eax, eax |
1252 | rep stosd |
1042 | rep stosd |
1253 | pop ecx eax |
1043 | pop eax |
1254 | mov byte [edx], 1 ; version |
1044 | mov byte [edx], 1 ; version |
1255 | mov esi, edi ; esi points to BDFE |
1045 | mov esi, edi ; esi points to BDFE |
- | 1046 | mov ecx, [ebx+12] ; number of blocks to read |
|
- | 1047 | mov ebx, [ebx+4] ; index of the first block |
|
1256 | .new_cluster: |
1048 | .new_cluster: |
1257 | mov [cluster_tmp], eax |
1049 | mov [ebp+FAT.cluster_tmp], eax |
1258 | test eax, eax |
1050 | test eax, eax |
1259 | jnz @f |
1051 | jnz @f |
1260 | cmp [fs_type], 32 |
1052 | cmp [ebp+FAT.fs_type], 32 |
1261 | jz .notfound |
1053 | jz .notfound |
1262 | mov eax, [ROOT_START] |
1054 | mov eax, [ebp+FAT.ROOT_START] |
1263 | push [ROOT_SECTORS] |
1055 | push [ebp+FAT.ROOT_SECTORS] |
1264 | push ebx |
1056 | push ebx |
1265 | jmp .new_sector |
1057 | jmp .new_sector |
1266 | @@: |
1058 | @@: |
1267 | dec eax |
1059 | dec eax |
1268 | dec eax |
1060 | dec eax |
1269 | imul eax, [SECTORS_PER_CLUSTER] |
1061 | imul eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
1270 | push [SECTORS_PER_CLUSTER] |
1062 | push [ebp+FAT.SECTORS_PER_CLUSTER] |
1271 | add eax, [DATA_START] |
1063 | add eax, [ebp+FAT.DATA_START] |
1272 | push ebx |
1064 | push ebx |
1273 | .new_sector: |
1065 | .new_sector: |
1274 | mov ebx, buffer |
1066 | lea ebx, [ebp+FAT.buffer] |
1275 | mov edi, ebx |
1067 | mov edi, ebx |
- | 1068 | push eax |
|
1276 | call hd_read |
1069 | call fs_read32_sys |
- | 1070 | test eax, eax |
|
1277 | cmp [hd_error], 0 |
1071 | pop eax |
1278 | jnz .notfound2 |
1072 | jnz .notfound2 |
1279 | add ebx, 512 |
1073 | add ebx, 512 |
1280 | push eax |
1074 | push eax |
1281 | .l1: |
1075 | .l1: |
- | 1076 | push ebp |
|
- | 1077 | lea ebp, [esp+20] |
|
1282 | call fat_get_name |
1078 | call fat_get_name |
- | 1079 | pop ebp |
|
1283 | jc .l2 |
1080 | jc .l2 |
1284 | cmp byte [edi+11], 0xF |
1081 | cmp byte [edi+11], 0xF |
1285 | jnz .do_bdfe |
1082 | jnz .do_bdfe |
1286 | add edi, 0x20 |
1083 | add edi, 0x20 |
1287 | cmp edi, ebx |
1084 | cmp edi, ebx |
1288 | jb .do_bdfe |
1085 | jb .do_bdfe |
1289 | pop eax |
1086 | pop eax |
1290 | inc eax |
1087 | inc eax |
1291 | dec dword [esp+4] |
1088 | dec dword [esp+4] |
1292 | jnz @f |
1089 | jnz @f |
1293 | mov eax, [cluster_tmp] |
1090 | mov eax, [ebp+FAT.cluster_tmp] |
1294 | test eax, eax |
1091 | test eax, eax |
1295 | jz .done |
1092 | jz .done |
1296 | call get_FAT |
1093 | call get_FAT |
1297 | cmp [hd_error], 0 |
- | |
1298 | jnz .notfound2 |
1094 | jc .notfound2 |
1299 | cmp eax, 2 |
1095 | cmp eax, 2 |
1300 | jb .done |
1096 | jb .done |
1301 | cmp eax, [fatRESERVED] |
1097 | cmp eax, [ebp+FAT.fatRESERVED] |
1302 | jae .done |
1098 | jae .done |
1303 | push eax |
1099 | push eax |
1304 | mov eax, [SECTORS_PER_CLUSTER] |
1100 | mov eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
1305 | mov [esp+8], eax |
1101 | mov [esp+8], eax |
1306 | pop eax |
1102 | pop eax |
1307 | mov [cluster_tmp], eax |
1103 | mov [ebp+FAT.cluster_tmp], eax |
1308 | dec eax |
1104 | dec eax |
1309 | dec eax |
1105 | dec eax |
1310 | imul eax, [SECTORS_PER_CLUSTER] |
1106 | imul eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
1311 | add eax, [DATA_START] |
1107 | add eax, [ebp+FAT.DATA_START] |
1312 | @@: |
1108 | @@: |
1313 | mov ebx, buffer |
1109 | lea ebx, [ebp+FAT.buffer] |
1314 | mov edi, ebx |
1110 | mov edi, ebx |
- | 1111 | push eax |
|
1315 | call hd_read |
1112 | call fs_read32_sys |
- | 1113 | test eax, eax |
|
1316 | cmp [hd_error], 0 |
1114 | pop eax |
1317 | jnz .notfound2 |
1115 | jnz .notfound2 |
1318 | add ebx, 512 |
1116 | add ebx, 512 |
1319 | push eax |
1117 | push eax |
1320 | .do_bdfe: |
1118 | .do_bdfe: |
1321 | inc dword [edx+8] ; new file found |
1119 | inc dword [edx+8] ; new file found |
1322 | dec dword [esp+4] |
1120 | dec dword [esp+4] |
1323 | jns .l2 |
1121 | jns .l2 |
1324 | dec ecx |
1122 | dec ecx |
1325 | js .l2 |
1123 | js .l2 |
1326 | inc dword [edx+4] ; new file block copied |
1124 | inc dword [edx+4] ; new file block copied |
- | 1125 | push ebp |
|
- | 1126 | lea ebp, [esp+20] |
|
1327 | call fat_entry_to_bdfe |
1127 | call fat_entry_to_bdfe |
- | 1128 | pop ebp |
|
1328 | .l2: |
1129 | .l2: |
1329 | add edi, 0x20 |
1130 | add edi, 0x20 |
1330 | cmp edi, ebx |
1131 | cmp edi, ebx |
1331 | jb .l1 |
1132 | jb .l1 |
1332 | pop eax |
1133 | pop eax |
1333 | inc eax |
1134 | inc eax |
1334 | dec dword [esp+4] |
1135 | dec dword [esp+4] |
1335 | jnz .new_sector |
1136 | jnz .new_sector |
1336 | mov eax, [cluster_tmp] |
1137 | mov eax, [ebp+FAT.cluster_tmp] |
1337 | test eax, eax |
1138 | test eax, eax |
1338 | jz .done |
1139 | jz .done |
1339 | call get_FAT |
1140 | call get_FAT |
1340 | cmp [hd_error], 0 |
- | |
1341 | jnz .notfound2 |
1141 | jc .notfound2 |
1342 | cmp eax, 2 |
1142 | cmp eax, 2 |
1343 | jb .done |
1143 | jb .done |
1344 | cmp eax, [fatRESERVED] |
1144 | cmp eax, [ebp+FAT.fatRESERVED] |
1345 | jae .done |
1145 | jae .done |
1346 | push eax |
1146 | push eax |
1347 | mov eax, [SECTORS_PER_CLUSTER] |
1147 | mov eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
1348 | mov [esp+8], eax |
1148 | mov [esp+8], eax |
1349 | pop eax |
1149 | pop eax |
1350 | pop ebx |
1150 | pop ebx |
1351 | add esp, 4 |
1151 | add esp, 4 |
1352 | jmp .new_cluster |
1152 | jmp .new_cluster |
1353 | .notfound2: |
1153 | .notfound2: |
1354 | add esp, 8 |
1154 | add esp, 8 |
1355 | .notfound: |
1155 | .notfound: |
1356 | add esp, 262*2+4 |
1156 | add esp, 262*2+4 |
1357 | pop ebp ecx esi edi |
1157 | pop esi edi |
1358 | mov eax, ERROR_FILE_NOT_FOUND |
1158 | mov ebx, [edx+4] |
1359 | or ebx, -1 |
1159 | call fat_unlock |
- | 1160 | mov eax, ERROR_DEVICE |
|
1360 | ret |
1161 | ret |
1361 | .done: |
1162 | .done: |
1362 | add esp, 262*2+4+8 |
1163 | add esp, 262*2+4+8 |
1363 | pop ebp |
- | |
1364 | mov ebx, [edx+4] |
1164 | mov ebx, [edx+4] |
1365 | xor eax, eax |
1165 | xor eax, eax |
1366 | dec ecx |
1166 | dec ecx |
1367 | js @f |
1167 | js @f |
1368 | mov al, ERROR_END_OF_FILE |
1168 | mov al, ERROR_END_OF_FILE |
1369 | @@: |
1169 | @@: |
- | 1170 | push eax |
|
- | 1171 | call fat_unlock |
|
- | 1172 | pop eax |
|
1370 | pop ecx esi edi |
1173 | pop esi edi |
1371 | ret |
1174 | ret |
Line 1372... | Line 1175... | ||
1372 | 1175 | ||
- | 1176 | fat16_root_next: |
|
1373 | fat16_root_next: |
1177 | push ecx |
- | 1178 | lea ecx, [ebp+FAT.buffer+0x200-0x20] |
|
1374 | cmp edi, buffer+0x200-0x20 |
1179 | cmp edi, ecx |
- | 1180 | jae fat16_root_next_sector |
|
1375 | jae fat16_root_next_sector |
1181 | pop ecx |
1376 | add edi, 0x20 |
1182 | add edi, 0x20 |
1377 | ret ; CF=0 |
1183 | ret ; CF=0 |
1378 | fat16_root_next_sector: |
1184 | fat16_root_next_sector: |
1379 | ; read next sector |
1185 | ; read next sector |
1380 | push [longname_sec2] |
1186 | push [ebp+FAT.longname_sec2] |
1381 | pop [longname_sec1] |
- | |
1382 | push ecx |
1187 | pop [ebp+FAT.longname_sec1] |
1383 | mov ecx, [eax+4] |
1188 | mov ecx, [eax+4] |
1384 | push ecx |
1189 | push ecx |
1385 | add ecx, [ROOT_START] |
1190 | add ecx, [ebp+FAT.ROOT_START] |
1386 | mov [longname_sec2], ecx |
1191 | mov [ebp+FAT.longname_sec2], ecx |
1387 | pop ecx |
1192 | pop ecx |
1388 | inc ecx |
1193 | inc ecx |
1389 | mov [eax+4], ecx |
1194 | mov [eax+4], ecx |
1390 | cmp ecx, [ROOT_SECTORS] |
1195 | cmp ecx, [ebp+FAT.ROOT_SECTORS] |
1391 | pop ecx |
1196 | pop ecx |
- | 1197 | jb fat16_root_first |
|
- | 1198 | mov eax, ERROR_FILE_NOT_FOUND |
|
- | 1199 | stc |
|
1392 | jae fat16_root_first.readerr |
1200 | ret |
1393 | fat16_root_first: |
1201 | fat16_root_first: |
1394 | mov eax, [eax+4] |
1202 | mov eax, [eax+4] |
1395 | add eax, [ROOT_START] |
1203 | add eax, [ebp+FAT.ROOT_START] |
1396 | push ebx |
1204 | push ebx |
1397 | mov edi, buffer |
1205 | lea edi, [ebp+FAT.buffer] |
1398 | mov ebx, edi |
1206 | mov ebx, edi |
1399 | call hd_read |
1207 | call fs_read32_sys |
1400 | pop ebx |
1208 | pop ebx |
1401 | cmp [hd_error], 0 |
1209 | test eax, eax |
1402 | jnz .readerr |
1210 | jnz .readerr |
1403 | ret ; CF=0 |
1211 | ret ; CF=0 |
- | 1212 | .readerr: |
|
- | 1213 | mov eax, ERROR_DEVICE |
|
- | 1214 | stc |
|
- | 1215 | ret |
|
- | 1216 | .notfound: |
|
1404 | .readerr: |
1217 | mov eax, ERROR_FILE_NOT_FOUND |
1405 | stc |
1218 | stc |
1406 | ret |
1219 | ret |
1407 | fat16_root_begin_write: |
1220 | fat16_root_begin_write: |
1408 | push edi eax |
1221 | push edi eax |
1409 | call fat16_root_first |
1222 | call fat16_root_first |
1410 | pop eax edi |
1223 | pop eax edi |
1411 | ret |
1224 | ret |
1412 | fat16_root_end_write: |
1225 | fat16_root_end_write: |
1413 | pusha |
1226 | pusha |
1414 | mov eax, [eax+4] |
1227 | mov eax, [eax+4] |
1415 | add eax, [ROOT_START] |
1228 | add eax, [ebp+FAT.ROOT_START] |
1416 | mov ebx, buffer |
1229 | lea ebx, [ebp+FAT.buffer] |
1417 | call hd_write |
1230 | call fs_write32_sys |
1418 | popa |
1231 | popa |
1419 | ret |
1232 | ret |
- | 1233 | fat16_root_next_write: |
|
- | 1234 | push ecx |
|
1420 | fat16_root_next_write: |
1235 | lea ecx, [ebp+FAT.buffer+0x200] |
1421 | cmp edi, buffer+0x200 |
1236 | cmp edi, ecx |
- | 1237 | jae @f |
|
1422 | jae @f |
1238 | pop ecx |
1423 | ret |
1239 | ret |
1424 | @@: |
1240 | @@: |
1425 | call fat16_root_end_write |
1241 | call fat16_root_end_write |
1426 | jmp fat16_root_next_sector |
1242 | jmp fat16_root_next_sector |
1427 | fat16_root_extend_dir: |
1243 | fat16_root_extend_dir: |
1428 | stc |
1244 | stc |
Line 1429... | Line 1245... | ||
1429 | ret |
1245 | ret |
- | 1246 | ||
1430 | 1247 | fat_notroot_next: |
|
- | 1248 | push ecx |
|
1431 | fat_notroot_next: |
1249 | lea ecx, [ebp+FAT.buffer+0x200-0x20] |
- | 1250 | cmp edi, ecx |
|
1432 | cmp edi, buffer+0x200-0x20 |
1251 | jae fat_notroot_next_sector |
1433 | jae fat_notroot_next_sector |
1252 | pop ecx |
1434 | add edi, 0x20 |
1253 | add edi, 0x20 |
1435 | ret ; CF=0 |
1254 | ret ; CF=0 |
1436 | fat_notroot_next_sector: |
1255 | fat_notroot_next_sector: |
1437 | push [longname_sec2] |
1256 | push [ebp+FAT.longname_sec2] |
1438 | pop [longname_sec1] |
1257 | pop [ebp+FAT.longname_sec1] |
1439 | push eax |
1258 | push eax |
1440 | call fat_get_sector |
1259 | call fat_get_sector |
1441 | mov [longname_sec2], eax |
- | |
1442 | pop eax |
1260 | mov [ebp+FAT.longname_sec2], eax |
1443 | push ecx |
1261 | pop eax |
1444 | mov ecx, [eax+4] |
1262 | mov ecx, [eax+4] |
1445 | inc ecx |
1263 | inc ecx |
1446 | cmp ecx, [SECTORS_PER_CLUSTER] |
1264 | cmp ecx, [ebp+FAT.SECTORS_PER_CLUSTER] |
1447 | jae fat_notroot_next_cluster |
1265 | jae fat_notroot_next_cluster |
1448 | mov [eax+4], ecx |
1266 | mov [eax+4], ecx |
1449 | jmp @f |
1267 | jmp @f |
1450 | fat_notroot_next_cluster: |
1268 | fat_notroot_next_cluster: |
1451 | push eax |
1269 | push eax |
1452 | mov eax, [eax] |
1270 | mov eax, [eax] |
1453 | call get_FAT |
1271 | call get_FAT |
- | 1272 | mov ecx, eax |
|
1454 | mov ecx, eax |
1273 | pop eax |
1455 | pop eax |
1274 | jc fat_notroot_first.deverr |
1456 | cmp [hd_error], 0 |
1275 | cmp ecx, 2 |
1457 | jnz fat_notroot_next_err |
1276 | jb fat_notroot_next_err |
1458 | cmp ecx, [fatRESERVED] |
1277 | cmp ecx, [ebp+FAT.fatRESERVED] |
1459 | jae fat_notroot_next_err |
1278 | jae fat_notroot_next_err |
1460 | mov [eax], ecx |
1279 | mov [eax], ecx |
1461 | and dword [eax+4], 0 |
1280 | and dword [eax+4], 0 |
1462 | @@: |
1281 | @@: |
1463 | pop ecx |
1282 | pop ecx |
1464 | fat_notroot_first: |
1283 | fat_notroot_first: |
1465 | call fat_get_sector |
1284 | call fat_get_sector |
1466 | push ebx |
1285 | push ebx |
1467 | mov edi, buffer |
1286 | lea edi, [ebp+FAT.buffer] |
1468 | mov ebx, edi |
1287 | mov ebx, edi |
- | 1288 | call fs_read32_sys |
|
1469 | call hd_read |
1289 | pop ebx |
1470 | pop ebx |
1290 | test eax, eax |
- | 1291 | jz .ret ; CF=0 |
|
1471 | cmp [hd_error], 0 |
1292 | push ecx |
- | 1293 | .deverr: |
|
- | 1294 | pop ecx |
|
- | 1295 | mov eax, ERROR_DEVICE |
|
- | 1296 | stc |
|
1472 | jnz @f |
1297 | .ret: |
1473 | ret ; CF=0 |
1298 | ret |
1474 | fat_notroot_next_err: |
- | |
- | 1299 | fat_notroot_next_err: |
|
1475 | pop ecx |
1300 | pop ecx |
1476 | @@: |
1301 | mov eax, ERROR_FILE_NOT_FOUND |
1477 | stc |
1302 | stc |
1478 | ret |
1303 | ret |
1479 | fat_notroot_begin_write: |
1304 | fat_notroot_begin_write: |
1480 | push eax edi |
1305 | push eax edi |
1481 | call fat_notroot_first |
1306 | call fat_notroot_first |
1482 | pop edi eax |
1307 | pop edi eax |
1483 | ret |
1308 | ret |
1484 | fat_notroot_end_write: |
1309 | fat_notroot_end_write: |
1485 | call fat_get_sector |
1310 | call fat_get_sector |
1486 | push ebx |
1311 | push ebx |
1487 | mov ebx, buffer |
1312 | lea ebx, [ebp+FAT.buffer] |
1488 | call hd_write |
1313 | call fs_write32_sys |
1489 | pop ebx |
1314 | pop ebx |
- | 1315 | ret |
|
- | 1316 | fat_notroot_next_write: |
|
1490 | ret |
1317 | push ecx |
1491 | fat_notroot_next_write: |
1318 | lea ecx, [ebp+FAT.buffer+0x200] |
- | 1319 | cmp edi, ecx |
|
1492 | cmp edi, buffer+0x200 |
1320 | jae @f |
1493 | jae @f |
1321 | pop ecx |
1494 | ret |
1322 | ret |
1495 | @@: |
1323 | @@: |
1496 | push eax |
1324 | push eax |
Line 1503... | Line 1331... | ||
1503 | jnc .found |
1331 | jnc .found |
1504 | pop eax |
1332 | pop eax |
1505 | ret ; CF=1 |
1333 | ret ; CF=1 |
1506 | .found: |
1334 | .found: |
1507 | push edx |
1335 | push edx |
1508 | mov edx, [fatEND] |
1336 | mov edx, [ebp+FAT.fatEND] |
1509 | call set_FAT |
1337 | call set_FAT |
- | 1338 | jc .writeerr |
|
1510 | mov edx, eax |
1339 | mov edx, eax |
1511 | mov eax, [esp+4] |
1340 | mov eax, [esp+4] |
1512 | mov eax, [eax] |
1341 | mov eax, [eax] |
1513 | push edx |
1342 | push edx |
1514 | call set_FAT |
1343 | call set_FAT |
1515 | pop edx |
1344 | pop edx |
1516 | cmp [hd_error], 0 |
- | |
1517 | jz @f |
1345 | jnc @f |
- | 1346 | .writeerr: |
|
1518 | pop edx |
1347 | pop edx |
1519 | pop eax |
1348 | pop eax |
1520 | stc |
1349 | stc |
1521 | ret |
1350 | ret |
1522 | @@: |
1351 | @@: |
1523 | push ecx |
1352 | push ecx |
1524 | or ecx, -1 |
1353 | or ecx, -1 |
1525 | call add_disk_free_space |
1354 | call add_disk_free_space |
1526 | ; zero new cluster |
1355 | ; zero new cluster |
1527 | mov ecx, 512/4 |
1356 | mov ecx, 512/4 |
1528 | mov edi, buffer |
1357 | lea edi, [ebp+FAT.buffer] |
1529 | push edi |
1358 | push edi |
1530 | xor eax, eax |
1359 | xor eax, eax |
1531 | rep stosd |
1360 | rep stosd |
1532 | pop edi |
1361 | pop edi |
1533 | pop ecx |
1362 | pop ecx |
Line 1537... | Line 1366... | ||
1537 | pop edx |
1366 | pop edx |
1538 | mov eax, [eax] |
1367 | mov eax, [eax] |
1539 | dec eax |
1368 | dec eax |
1540 | dec eax |
1369 | dec eax |
1541 | push ebx ecx |
1370 | push ebx ecx |
1542 | mov ecx, [SECTORS_PER_CLUSTER] |
1371 | mov ecx, [ebp+FAT.SECTORS_PER_CLUSTER] |
1543 | imul eax, ecx |
1372 | imul eax, ecx |
1544 | add eax, [DATA_START] |
1373 | add eax, [ebp+FAT.DATA_START] |
1545 | mov ebx, edi |
1374 | mov ebx, edi |
1546 | @@: |
1375 | @@: |
- | 1376 | push eax |
|
1547 | call hd_write |
1377 | call fs_write32_sys |
- | 1378 | pop eax |
|
1548 | inc eax |
1379 | inc eax |
1549 | loop @b |
1380 | loop @b |
1550 | pop ecx ebx eax |
1381 | pop ecx ebx eax |
1551 | clc |
1382 | clc |
1552 | ret |
1383 | ret |
Line 1554... | Line 1385... | ||
1554 | fat_get_sector: |
1385 | fat_get_sector: |
1555 | push ecx |
1386 | push ecx |
1556 | mov ecx, [eax] |
1387 | mov ecx, [eax] |
1557 | dec ecx |
1388 | dec ecx |
1558 | dec ecx |
1389 | dec ecx |
1559 | imul ecx, [SECTORS_PER_CLUSTER] |
1390 | imul ecx, [ebp+FAT.SECTORS_PER_CLUSTER] |
1560 | add ecx, [DATA_START] |
1391 | add ecx, [ebp+FAT.DATA_START] |
1561 | add ecx, [eax+4] |
1392 | add ecx, [eax+4] |
1562 | mov eax, ecx |
1393 | mov eax, ecx |
1563 | pop ecx |
1394 | pop ecx |
1564 | ret |
1395 | ret |
Line 1565... | Line 1396... | ||
1565 | 1396 | ||
1566 | ;---------------------------------------------------------------- |
1397 | ;---------------------------------------------------------------- |
1567 | ; |
1398 | ; |
1568 | ; fs_HdRewrite - LFN variant for writing hard disk |
1399 | ; fs_HdRewrite - LFN variant for writing hard disk |
- | 1400 | ; |
|
- | 1401 | ; Obsolete, will be replaced with filesystem-specific functions. |
|
1569 | ; |
1402 | ; |
1570 | ; esi points to filename |
1403 | ; esi points to filename |
1571 | ; ebx ignored (reserved) |
1404 | ; ebx ignored (reserved) |
1572 | ; ecx number of bytes to write, 0+ |
1405 | ; ecx number of bytes to write, 0+ |
1573 | ; edx mem location to data |
1406 | ; edx mem location to data |
1574 | ; |
1407 | ; |
1575 | ; ret ebx = number of written bytes |
1408 | ; ret ebx = number of written bytes |
1576 | ; eax = 0 ok read or other = errormsg |
1409 | ; eax = 0 ok read or other = errormsg |
1577 | ; |
1410 | ; |
1578 | ;-------------------------------------------------------------- |
- | |
1579 | fshrad: |
- | |
1580 | mov eax, ERROR_ACCESS_DENIED |
- | |
1581 | xor ebx, ebx |
- | |
1582 | ret |
- | |
1583 | fshrfs: |
- | |
1584 | mov eax, ERROR_UNKNOWN_FS |
- | |
1585 | xor ebx, ebx |
- | |
1586 | ret |
- | |
1587 | 1411 | ;-------------------------------------------------------------- |
|
1588 | fs_HdCreateFolder: |
1412 | fs_HdCreateFolder: |
1589 | mov al, 1 |
1413 | mov al, 1 |
Line 1590... | Line 1414... | ||
1590 | jmp fs_HdRewrite.common |
1414 | jmp fs_HdRewrite.common |
1591 | 1415 | ||
1592 | fs_HdRewrite: |
1416 | fs_HdRewrite: |
- | 1417 | xor eax, eax |
|
- | 1418 | .common: |
|
- | 1419 | cmp [fs_type], 16 |
|
- | 1420 | jz @f |
|
1593 | xor eax, eax |
1421 | cmp [fs_type], 32 |
1594 | .common: |
1422 | jz @f |
1595 | cmp [fs_type], 1 |
1423 | cmp [fs_type], 1 |
1596 | jz ntfs_HdRewrite |
1424 | jz ntfs_HdRewrite |
1597 | cmp [fs_type], 2 |
1425 | cmp [fs_type], 2 |
1598 | jz ext2_HdRewrite |
1426 | jz ext2_HdRewrite |
1599 | cmp [fs_type], 16 |
- | |
1600 | jz @f |
1427 | mov eax, ERROR_UNKNOWN_FS |
1601 | cmp [fs_type], 32 |
1428 | xor ebx, ebx |
- | 1429 | ret |
|
- | 1430 | @@: |
|
- | 1431 | sub ebx, 4 |
|
- | 1432 | push ebp |
|
- | 1433 | mov ebp, [fs_dependent_data_start.partition] |
|
- | 1434 | test eax, eax |
|
- | 1435 | mov eax, fat_CreateFolder |
|
- | 1436 | jnz @f |
|
- | 1437 | mov eax, fat_Rewrite |
|
- | 1438 | @@: |
|
- | 1439 | call eax |
|
- | 1440 | pop ebp |
|
- | 1441 | ret |
|
- | 1442 | ||
- | 1443 | fshrad: |
|
- | 1444 | call fat_unlock |
|
- | 1445 | mov eax, ERROR_ACCESS_DENIED |
|
- | 1446 | xor ebx, ebx |
|
- | 1447 | ret |
|
- | 1448 | ||
- | 1449 | ;---------------------------------------------------------------- |
|
- | 1450 | ; fat_CreateFolder - FAT16/32 implementation of creating a folder |
|
- | 1451 | ; in: ebp = pointer to FAT structure |
|
- | 1452 | ; in: esi+[esp+4] = name |
|
- | 1453 | ; in: ebx = pointer to parameters from sysfunc 70 |
|
- | 1454 | ; out: eax, ebx = return values for sysfunc 70 |
|
- | 1455 | ;---------------------------------------------------------------- |
|
- | 1456 | fat_CreateFolder: |
|
- | 1457 | push 1 |
|
- | 1458 | jmp fat_Rewrite.common |
|
- | 1459 | ||
- | 1460 | ;---------------------------------------------------------------- |
|
- | 1461 | ; fat_HdRewrite - FAT16/32 implementation of creating a new file |
|
- | 1462 | ; in: ebp = pointer to FAT structure |
|
- | 1463 | ; in: esi+[esp+4] = name |
|
- | 1464 | ; in: ebx = pointer to parameters from sysfunc 70 |
|
- | 1465 | ; out: eax, ebx = return values for sysfunc 70 |
|
- | 1466 | ;---------------------------------------------------------------- |
|
- | 1467 | fat_Rewrite: |
|
- | 1468 | push 0 |
|
- | 1469 | .common: |
|
1602 | jnz fshrfs |
1470 | call fat_lock |
1603 | @@: |
1471 | pop eax |
- | 1472 | cmp byte [esi], 0 |
|
- | 1473 | jz fshrad |
|
1604 | cmp byte [esi], 0 |
1474 | mov ecx, [ebx+12] |
1605 | jz fshrad |
1475 | mov edx, [ebx+16] |
- | 1476 | pushad |
|
1606 | pushad |
1477 | xor edi, edi |
1607 | xor edi, edi |
1478 | mov edx, [esp+4+20h] |
1608 | push esi |
1479 | push esi |
1609 | test ebp, ebp |
1480 | test edx, edx |
1610 | jz @f |
1481 | jz @f |
1611 | mov esi, ebp |
1482 | mov esi, edx |
1612 | @@: |
1483 | @@: |
1613 | lodsb |
1484 | lodsb |
1614 | test al, al |
1485 | test al, al |
Line 1619... | Line 1490... | ||
1619 | jmp @b |
1490 | jmp @b |
1620 | @@: |
1491 | @@: |
1621 | pop esi |
1492 | pop esi |
1622 | test edi, edi |
1493 | test edi, edi |
1623 | jnz .noroot |
1494 | jnz .noroot |
1624 | test ebp, ebp |
1495 | test edx, edx |
1625 | jnz .hasebp |
1496 | jnz .hasebp |
1626 | mov ebp, [ROOT_CLUSTER] |
1497 | mov edx, [ebp+FAT.ROOT_CLUSTER] |
1627 | cmp [fs_type], 32 |
1498 | cmp [ebp+FAT.fs_type], 32 |
1628 | jz .pushnotroot |
1499 | jz .pushnotroot |
- | 1500 | xor edx, edx |
|
- | 1501 | push edx |
|
1629 | push fat16_root_extend_dir |
1502 | push fat16_root_extend_dir |
1630 | push fat16_root_end_write |
1503 | push fat16_root_end_write |
1631 | push fat16_root_next_write |
1504 | push fat16_root_next_write |
1632 | push fat16_root_begin_write |
1505 | push fat16_root_begin_write |
1633 | xor ebp, ebp |
- | |
1634 | push ebp |
1506 | push edx |
1635 | push ebp |
1507 | push edx |
1636 | push fat16_root_first |
1508 | push fat16_root_first |
1637 | push fat16_root_next |
1509 | push fat16_root_next |
1638 | jmp .common1 |
1510 | jmp .common1 |
1639 | .hasebp: |
1511 | .hasebp: |
1640 | mov eax, ERROR_ACCESS_DENIED |
1512 | mov eax, ERROR_ACCESS_DENIED |
1641 | cmp byte [ebp], 0 |
1513 | cmp byte [edx], 0 |
1642 | jz .ret1 |
1514 | jz .ret1 |
1643 | push ebp |
- | |
1644 | xor ebp, ebp |
- | |
1645 | call hd_find_lfn |
1515 | stdcall hd_find_lfn, 0 |
1646 | pop esi |
1516 | mov esi, [esp+4+20h] |
1647 | jc .notfound0 |
1517 | jc .ret1 |
1648 | jmp .common0 |
1518 | jmp .common0 |
1649 | .noroot: |
1519 | .noroot: |
1650 | mov eax, ERROR_ACCESS_DENIED |
1520 | mov eax, ERROR_ACCESS_DENIED |
1651 | cmp byte [edi+1], 0 |
1521 | cmp byte [edi+1], 0 |
1652 | jz .ret1 |
1522 | jz .ret1 |
1653 | ; check existence |
1523 | ; check existence |
1654 | mov byte [edi], 0 |
1524 | mov byte [edi], 0 |
1655 | push edi |
1525 | push edi |
1656 | call hd_find_lfn |
1526 | stdcall hd_find_lfn, [esp+4+24h] |
1657 | pop esi |
1527 | pop esi |
1658 | mov byte [esi], '/' |
1528 | mov byte [esi], '/' |
1659 | jnc @f |
1529 | jnc @f |
1660 | .notfound0: |
1530 | .notfound0: |
1661 | mov eax, ERROR_FILE_NOT_FOUND |
1531 | mov eax, ERROR_FILE_NOT_FOUND |
1662 | .ret1: |
1532 | .ret1: |
1663 | mov [esp+28], eax |
1533 | mov [esp+28], eax |
- | 1534 | call fat_unlock |
|
1664 | popad |
1535 | popad |
1665 | xor ebx, ebx |
1536 | xor ebx, ebx |
1666 | ret |
1537 | ret |
1667 | @@: |
1538 | @@: |
1668 | inc esi |
1539 | inc esi |
1669 | .common0: |
1540 | .common0: |
1670 | test byte [edi+11], 0x10 ; must be directory |
1541 | test byte [edi+11], 0x10 ; must be directory |
1671 | mov eax, ERROR_ACCESS_DENIED |
1542 | mov eax, ERROR_ACCESS_DENIED |
1672 | jz .ret1 |
1543 | jz .ret1 |
1673 | mov ebp, [edi+20-2] |
1544 | mov edx, [edi+20-2] |
1674 | mov bp, [edi+26] ; ebp=cluster |
1545 | mov dx, [edi+26] ; ebp=cluster |
1675 | mov eax, ERROR_FAT_TABLE |
1546 | mov eax, ERROR_FAT_TABLE |
1676 | cmp ebp, 2 |
1547 | cmp edx, 2 |
1677 | jb .ret1 |
1548 | jb .ret1 |
1678 | .pushnotroot: |
1549 | .pushnotroot: |
- | 1550 | push edx |
|
1679 | push fat_notroot_extend_dir |
1551 | push fat_notroot_extend_dir |
1680 | push fat_notroot_end_write |
1552 | push fat_notroot_end_write |
1681 | push fat_notroot_next_write |
1553 | push fat_notroot_next_write |
1682 | push fat_notroot_begin_write |
1554 | push fat_notroot_begin_write |
1683 | push 0 |
1555 | push 0 |
1684 | push ebp |
1556 | push edx |
1685 | push fat_notroot_first |
1557 | push fat_notroot_first |
1686 | push fat_notroot_next |
1558 | push fat_notroot_next |
1687 | .common1: |
1559 | .common1: |
1688 | call fat_find_lfn |
1560 | call fat_find_lfn |
1689 | jc .notfound |
1561 | jc .notfound |
1690 | ; found |
1562 | ; found |
1691 | test byte [edi+11], 10h |
1563 | test byte [edi+11], 10h |
1692 | jz .exists_file |
1564 | jz .exists_file |
1693 | ; found directory; if we are creating directory, return OK, |
1565 | ; found directory; if we are creating directory, return OK, |
1694 | ; if we are creating file, say "access denied" |
1566 | ; if we are creating file, say "access denied" |
1695 | add esp, 32 |
1567 | add esp, 36 |
- | 1568 | call fat_unlock |
|
1696 | popad |
1569 | popad |
1697 | test al, al |
1570 | test al, al |
1698 | mov eax, ERROR_ACCESS_DENIED |
1571 | mov eax, ERROR_ACCESS_DENIED |
1699 | jz @f |
1572 | jz @f |
1700 | mov al, 0 |
1573 | mov al, 0 |
Line 1702... | Line 1575... | ||
1702 | xor ebx, ebx |
1575 | xor ebx, ebx |
1703 | ret |
1576 | ret |
1704 | .exists_file: |
1577 | .exists_file: |
1705 | ; found file; if we are creating directory, return "access denied", |
1578 | ; found file; if we are creating directory, return "access denied", |
1706 | ; if we are creating file, delete existing file and continue |
1579 | ; if we are creating file, delete existing file and continue |
1707 | cmp byte [esp+32+28], 0 |
1580 | cmp byte [esp+36+28], 0 |
1708 | jz @f |
1581 | jz @f |
1709 | add esp, 32 |
1582 | add esp, 36 |
- | 1583 | call fat_unlock |
|
1710 | popad |
1584 | popad |
1711 | mov eax, ERROR_ACCESS_DENIED |
1585 | mov eax, ERROR_ACCESS_DENIED |
1712 | xor ebx, ebx |
1586 | xor ebx, ebx |
1713 | ret |
1587 | ret |
1714 | @@: |
1588 | @@: |
Line 1722... | Line 1596... | ||
1722 | mov word [edi+20], cx |
1596 | mov word [edi+20], cx |
1723 | mov word [edi+26], cx |
1597 | mov word [edi+26], cx |
1724 | test eax, eax |
1598 | test eax, eax |
1725 | jz .done1 |
1599 | jz .done1 |
1726 | @@: |
1600 | @@: |
1727 | cmp eax, [fatRESERVED] |
1601 | cmp eax, [ebp+FAT.fatRESERVED] |
1728 | jae .done1 |
1602 | jae .done1 |
1729 | push edx |
1603 | push edx |
1730 | xor edx, edx |
1604 | xor edx, edx |
1731 | call set_FAT |
1605 | call set_FAT |
1732 | mov eax, edx |
1606 | mov eax, edx |
1733 | pop edx |
1607 | pop edx |
- | 1608 | jc .done1 |
|
1734 | inc ecx |
1609 | inc ecx |
1735 | jmp @b |
1610 | jmp @b |
1736 | .done1: |
1611 | .done1: |
1737 | pop edi |
1612 | pop edi |
1738 | call get_time_for_file |
1613 | call get_time_for_file |
Line 1744... | Line 1619... | ||
1744 | jmp .doit |
1619 | jmp .doit |
1745 | .notfound: |
1620 | .notfound: |
1746 | ; file is not found; generate short name |
1621 | ; file is not found; generate short name |
1747 | call fat_name_is_legal |
1622 | call fat_name_is_legal |
1748 | jc @f |
1623 | jc @f |
1749 | add esp, 32 |
1624 | add esp, 36 |
- | 1625 | call fat_unlock |
|
1750 | popad |
1626 | popad |
1751 | mov eax, ERROR_FILE_NOT_FOUND |
1627 | mov eax, ERROR_FILE_NOT_FOUND |
1752 | xor ebx, ebx |
1628 | xor ebx, ebx |
1753 | ret |
1629 | ret |
1754 | @@: |
1630 | @@: |
Line 1757... | Line 1633... | ||
1757 | call fat_gen_short_name |
1633 | call fat_gen_short_name |
1758 | .test_short_name_loop: |
1634 | .test_short_name_loop: |
1759 | push esi edi ecx |
1635 | push esi edi ecx |
1760 | mov esi, edi |
1636 | mov esi, edi |
1761 | lea eax, [esp+12+12+8] |
1637 | lea eax, [esp+12+12+8] |
- | 1638 | mov edx, [eax+24] |
|
1762 | mov [eax], ebp |
1639 | mov [eax], edx |
1763 | and dword [eax+4], 0 |
1640 | and dword [eax+4], 0 |
1764 | call dword [eax-4] |
1641 | call dword [eax-4] |
1765 | jc .found |
1642 | jc .found |
1766 | .test_short_name_entry: |
1643 | .test_short_name_entry: |
1767 | cmp byte [edi+11], 0xF |
1644 | cmp byte [edi+11], 0xF |
Line 1779... | Line 1656... | ||
1779 | .short_name_found: |
1656 | .short_name_found: |
1780 | pop ecx edi esi |
1657 | pop ecx edi esi |
1781 | call fat_next_short_name |
1658 | call fat_next_short_name |
1782 | jnc .test_short_name_loop |
1659 | jnc .test_short_name_loop |
1783 | .disk_full: |
1660 | .disk_full: |
1784 | add esp, 12+32 |
1661 | add esp, 12+36 |
- | 1662 | call fat_unlock |
|
1785 | popa |
1663 | popa |
1786 | mov eax, ERROR_DISK_FULL |
1664 | mov eax, ERROR_DISK_FULL |
1787 | xor ebx, ebx |
1665 | xor ebx, ebx |
1788 | ret |
1666 | ret |
1789 | .found: |
1667 | .found: |
Line 1819... | Line 1697... | ||
1819 | push -1 |
1697 | push -1 |
1820 | ; find |
1698 | ; find |
1821 | xor ecx, ecx |
1699 | xor ecx, ecx |
1822 | push eax |
1700 | push eax |
1823 | lea eax, [esp+16+8+12+8] |
1701 | lea eax, [esp+16+8+12+8] |
- | 1702 | mov edx, [eax+24] |
|
1824 | mov [eax], ebp |
1703 | mov [eax], edx |
1825 | and dword [eax+4], 0 |
1704 | and dword [eax+4], 0 |
1826 | call dword [eax-4] |
1705 | call dword [eax-4] |
1827 | pop eax |
1706 | pop eax |
1828 | jnc .scan_dir |
1707 | jnc .scan_dir |
1829 | .fsfrfe3: |
1708 | .fsfrfe3: |
1830 | add esp, 12+8+12+32 |
1709 | add esp, 12+8+12+36 |
- | 1710 | call fat_unlock |
|
1831 | popad |
1711 | popad |
1832 | mov eax, 11 |
1712 | mov eax, ERROR_DEVICE |
1833 | xor ebx, ebx |
1713 | xor ebx, ebx |
1834 | ret |
1714 | ret |
1835 | .scan_dir: |
1715 | .scan_dir: |
1836 | cmp byte [edi], 0 |
1716 | cmp byte [edi], 0 |
1837 | jz .free |
1717 | jz .free |
Line 1840... | Line 1720... | ||
1840 | xor ecx, ecx |
1720 | xor ecx, ecx |
1841 | .scan_cont: |
1721 | .scan_cont: |
1842 | push eax |
1722 | push eax |
1843 | lea eax, [esp+16+8+12+8] |
1723 | lea eax, [esp+16+8+12+8] |
1844 | call dword [eax-8] |
1724 | call dword [eax-8] |
- | 1725 | mov edx, eax |
|
1845 | pop eax |
1726 | pop eax |
1846 | jnc .scan_dir |
1727 | jnc .scan_dir |
1847 | cmp [hd_error], 0 |
1728 | cmp edx, ERROR_DEVICE |
1848 | jnz .fsfrfe3 |
1729 | jz .fsfrfe3 |
1849 | push eax |
1730 | push eax |
1850 | lea eax, [esp+16+8+12+8] |
1731 | lea eax, [esp+16+8+12+8] |
1851 | call dword [eax+20] ; extend directory |
1732 | call dword [eax+20] ; extend directory |
1852 | pop eax |
1733 | pop eax |
1853 | jnc .scan_dir |
1734 | jnc .scan_dir |
1854 | add esp, 12+8+12+32 |
1735 | add esp, 12+8+12+36 |
- | 1736 | call fat_unlock |
|
1855 | popad |
1737 | popad |
1856 | mov eax, ERROR_DISK_FULL |
1738 | mov eax, ERROR_DISK_FULL |
1857 | xor ebx, ebx |
1739 | xor ebx, ebx |
1858 | ret |
1740 | ret |
1859 | .free: |
1741 | .free: |
Line 1868... | Line 1750... | ||
1868 | @@: |
1750 | @@: |
1869 | inc ecx |
1751 | inc ecx |
1870 | cmp ecx, eax |
1752 | cmp ecx, eax |
1871 | jb .scan_cont |
1753 | jb .scan_cont |
1872 | ; found! |
1754 | ; found! |
1873 | ; calculate name checksum |
- | |
1874 | push esi ecx |
1755 | push esi ecx |
- | 1756 | ; If creating a directory, allocate one data cluster now and fail immediately |
|
- | 1757 | ; if this is impossible. This prevents from creating an invalid directory entry |
|
- | 1758 | ; on a full disk. |
|
- | 1759 | ; yup, the argument is quite non-intuitive... but what should I do if |
|
- | 1760 | ; the entire function uses such arguments? BTW, it refers to al from pushad, |
|
- | 1761 | ; which in turn is filled with 0 in fat_Rewrite and 1 in fat_CreateFolder. |
|
- | 1762 | cmp byte [esp+8+12+8+12+36+28], 0 |
|
- | 1763 | jz .no.preallocate.folder.data |
|
- | 1764 | call get_free_FAT |
|
- | 1765 | jnc @f |
|
- | 1766 | add esp, 8+12+8 |
|
- | 1767 | jmp .disk_full |
|
- | 1768 | @@: |
|
- | 1769 | mov [esp+8+12+8+12+36+20], eax ; store the cluster somewhere |
|
- | 1770 | .no.preallocate.folder.data: |
|
- | 1771 | ; calculate name checksum |
|
1875 | mov esi, [esp+8+12] |
1772 | mov esi, [esp+8+12] |
1876 | mov ecx, 11 |
1773 | mov ecx, 11 |
1877 | xor eax, eax |
1774 | xor eax, eax |
1878 | @@: |
1775 | @@: |
1879 | ror al, 1 |
1776 | ror al, 1 |
Line 1939... | Line 1836... | ||
1939 | mov [edi+18], ax ; last access date |
1836 | mov [edi+18], ax ; last access date |
1940 | xor ecx, ecx |
1837 | xor ecx, ecx |
1941 | mov word [edi+20], cx ; high word of cluster |
1838 | mov word [edi+20], cx ; high word of cluster |
1942 | mov word [edi+26], cx ; low word of cluster - to be filled |
1839 | mov word [edi+26], cx ; low word of cluster - to be filled |
1943 | mov dword [edi+28], ecx ; file size - to be filled |
1840 | mov dword [edi+28], ecx ; file size - to be filled |
1944 | cmp byte [esp+32+28], cl |
1841 | cmp byte [esp+36+28], cl |
1945 | jz .doit |
1842 | jz .doit |
1946 | ; create directory |
1843 | ; create directory |
1947 | mov byte [edi+11], 10h ; attributes: folder |
1844 | mov byte [edi+11], 10h ; attributes: folder |
1948 | mov edx, edi |
1845 | mov esi, edi |
1949 | lea eax, [esp+8] |
1846 | lea eax, [esp+8] |
1950 | call dword [eax+16] ; flush directory |
1847 | call dword [eax+16] ; flush directory |
- | 1848 | mov eax, [esp+36+20] ; extract saved cluster |
|
- | 1849 | mov [esp+36+20], edi ; this is needed for calculating arg of add_disk_free_space! |
|
1951 | push ecx |
1850 | push ecx |
1952 | mov ecx, [SECTORS_PER_CLUSTER] |
1851 | mov ecx, [ebp+FAT.SECTORS_PER_CLUSTER] |
1953 | shl ecx, 9 |
1852 | shl ecx, 9 |
- | 1853 | push ecx |
|
- | 1854 | push edi |
|
1954 | jmp .doit2 |
1855 | jmp .doit2 |
1955 | .doit: |
1856 | .doit: |
- | 1857 | mov esi, [esp+36+20] |
|
1956 | lea eax, [esp+8] |
1858 | lea eax, [esp+8] |
1957 | call dword [eax+16] ; flush directory |
1859 | call dword [eax+16] ; flush directory |
1958 | push ecx |
1860 | push ecx |
1959 | mov ecx, [esp+4+32+24] |
1861 | mov ecx, [esp+4+36+24] |
1960 | .doit2: |
- | |
1961 | push ecx |
1862 | push ecx |
1962 | push edi |
1863 | push edi |
1963 | mov esi, edx |
- | |
1964 | test ecx, ecx |
1864 | test ecx, ecx |
1965 | jz .done |
1865 | jz .done |
1966 | call get_free_FAT |
1866 | call get_free_FAT |
1967 | jc .diskfull |
1867 | jc .diskfull |
- | 1868 | .doit2: |
|
1968 | push eax |
1869 | push eax |
1969 | mov [edi+26], ax |
1870 | mov [edi+26], ax |
1970 | shr eax, 16 |
1871 | shr eax, 16 |
1971 | mov [edi+20], ax |
1872 | mov [edi+20], ax |
1972 | lea eax, [esp+16+8] |
1873 | lea eax, [esp+16+8] |
1973 | call dword [eax+16] ; flush directory |
1874 | call dword [eax+16] ; flush directory |
1974 | pop eax |
1875 | pop eax |
1975 | push edx |
1876 | push edx |
1976 | mov edx, [fatEND] |
1877 | mov edx, [ebp+FAT.fatEND] |
1977 | call set_FAT |
1878 | call set_FAT |
1978 | pop edx |
1879 | pop edx |
1979 | .write_cluster: |
1880 | .write_cluster: |
1980 | push eax |
1881 | push eax |
1981 | dec eax |
1882 | dec eax |
1982 | dec eax |
1883 | dec eax |
1983 | mov ebp, [SECTORS_PER_CLUSTER] |
1884 | imul eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
1984 | imul eax, ebp |
1885 | add eax, [ebp+FAT.DATA_START] |
1985 | add eax, [DATA_START] |
1886 | push [ebp+FAT.SECTORS_PER_CLUSTER] |
1986 | ; write data |
1887 | ; write data |
1987 | .write_sector: |
1888 | .write_sector: |
1988 | cmp byte [esp+16+32+28], 0 |
1889 | cmp byte [esp+20+36+28], 0 |
1989 | jnz .writedir |
1890 | jnz .writedir |
1990 | mov ecx, 512 |
1891 | mov ecx, 512 |
1991 | cmp dword [esp+8], ecx |
1892 | cmp dword [esp+12], ecx |
1992 | jb .writeshort |
1893 | jb .writeshort |
1993 | ; we can write directly from given buffer |
1894 | ; we can write directly from given buffer |
1994 | mov ebx, esi |
1895 | mov ebx, esi |
1995 | add esi, ecx |
1896 | add esi, ecx |
1996 | jmp .writecommon |
1897 | jmp .writecommon |
1997 | .writeshort: |
1898 | .writeshort: |
1998 | mov ecx, [esp+8] |
1899 | mov ecx, [esp+12] |
1999 | push ecx |
1900 | push ecx |
2000 | mov edi, buffer |
1901 | lea edi, [ebp+FAT.buffer] |
2001 | mov ebx, edi |
1902 | mov ebx, edi |
2002 | rep movsb |
1903 | rep movsb |
2003 | .writedircont: |
1904 | .writedircont: |
2004 | mov ecx, buffer+0x200 |
1905 | lea ecx, [ebp+FAT.buffer+0x200] |
2005 | sub ecx, edi |
1906 | sub ecx, edi |
2006 | push eax |
1907 | push eax |
2007 | xor eax, eax |
1908 | xor eax, eax |
2008 | rep stosb |
1909 | rep stosb |
2009 | pop eax |
1910 | pop eax |
2010 | pop ecx |
1911 | pop ecx |
2011 | .writecommon: |
1912 | .writecommon: |
- | 1913 | push eax |
|
2012 | call hd_write |
1914 | call fs_write32_app |
- | 1915 | test eax, eax |
|
2013 | cmp [hd_error], 0 |
1916 | pop eax |
2014 | jnz .writeerr |
1917 | jnz .writeerr |
2015 | inc eax |
1918 | inc eax |
2016 | sub dword [esp+8], ecx |
1919 | sub dword [esp+12], ecx |
2017 | jz .writedone |
1920 | jz .writedone |
2018 | dec ebp |
1921 | dec dword [esp] |
2019 | jnz .write_sector |
1922 | jnz .write_sector |
- | 1923 | pop eax |
|
2020 | ; allocate new cluster |
1924 | ; allocate new cluster |
2021 | pop eax |
1925 | pop eax |
2022 | mov ecx, eax |
1926 | mov ecx, eax |
2023 | call get_free_FAT |
1927 | call get_free_FAT |
2024 | jc .diskfull |
1928 | jc .diskfull |
2025 | push edx |
1929 | push edx |
2026 | mov edx, [fatEND] |
1930 | mov edx, [ebp+FAT.fatEND] |
2027 | call set_FAT |
1931 | call set_FAT |
2028 | xchg eax, ecx |
1932 | xchg eax, ecx |
2029 | mov edx, ecx |
1933 | mov edx, ecx |
2030 | call set_FAT |
1934 | call set_FAT |
2031 | pop edx |
1935 | pop edx |
Line 2033... | Line 1937... | ||
2033 | jmp .write_cluster |
1937 | jmp .write_cluster |
2034 | .diskfull: |
1938 | .diskfull: |
2035 | mov eax, ERROR_DISK_FULL |
1939 | mov eax, ERROR_DISK_FULL |
2036 | jmp .ret |
1940 | jmp .ret |
2037 | .writeerr: |
1941 | .writeerr: |
2038 | pop eax |
1942 | pop eax eax |
2039 | sub esi, ecx |
1943 | sub esi, ecx |
2040 | mov eax, 11 |
1944 | mov eax, ERROR_DEVICE |
2041 | jmp .ret |
1945 | jmp .ret |
2042 | .writedone: |
1946 | .writedone: |
2043 | pop eax |
1947 | pop eax eax |
2044 | .done: |
1948 | .done: |
2045 | xor eax, eax |
1949 | xor eax, eax |
2046 | .ret: |
1950 | .ret: |
2047 | pop edi ecx |
1951 | pop edi ecx |
2048 | mov ebx, esi |
1952 | sub esi, [esp+4+36+20] |
2049 | sub ebx, edx |
1953 | mov [esp+4+36+28], eax |
2050 | pop ebp |
- | |
2051 | mov [esp+32+28], eax |
1954 | mov [esp+4+36+16], esi |
2052 | lea eax, [esp+8] |
1955 | lea eax, [esp+12] |
2053 | call dword [eax+8] |
1956 | call dword [eax+8] |
2054 | mov [edi+28], ebx |
1957 | mov [edi+28], esi |
2055 | call dword [eax+16] |
1958 | call dword [eax+16] |
2056 | mov [esp+32+16], ebx |
1959 | mov [esp+36+16], ebx |
2057 | lea eax, [ebx+511] |
1960 | lea eax, [esi+511] |
2058 | shr eax, 9 |
1961 | shr eax, 9 |
2059 | mov ecx, [SECTORS_PER_CLUSTER] |
1962 | mov ecx, [ebp+FAT.SECTORS_PER_CLUSTER] |
2060 | lea eax, [eax+ecx-1] |
1963 | lea eax, [eax+ecx-1] |
2061 | xor edx, edx |
1964 | xor edx, edx |
2062 | div ecx |
1965 | div ecx |
2063 | mov ecx, ebp |
1966 | pop ecx |
2064 | sub ecx, eax |
1967 | sub ecx, eax |
2065 | call add_disk_free_space |
1968 | call add_disk_free_space |
2066 | add esp, 32 |
1969 | add esp, 36 |
2067 | call update_disk |
1970 | call update_disk |
- | 1971 | call fat_unlock |
|
2068 | popad |
1972 | popad |
2069 | ret |
1973 | ret |
2070 | .writedir: |
1974 | .writedir: |
2071 | push 512 |
1975 | push 512 |
2072 | mov edi, buffer |
1976 | lea edi, [ebp+FAT.buffer] |
2073 | mov ebx, edi |
1977 | mov ebx, edi |
2074 | mov ecx, [SECTORS_PER_CLUSTER] |
1978 | mov ecx, [ebp+FAT.SECTORS_PER_CLUSTER] |
2075 | shl ecx, 9 |
1979 | shl ecx, 9 |
2076 | cmp ecx, [esp+12] |
1980 | cmp ecx, [esp+16] |
2077 | jnz .writedircont |
1981 | jnz .writedircont |
2078 | dec dword [esp+16] |
1982 | dec dword [esp+20] |
2079 | push esi |
1983 | push esi |
2080 | mov ecx, 32/4 |
1984 | mov ecx, 32/4 |
2081 | rep movsd |
1985 | rep movsd |
2082 | pop esi |
1986 | pop esi |
2083 | mov dword [edi-32], '. ' |
1987 | mov dword [edi-32], '. ' |
Line 2090... | Line 1994... | ||
2090 | pop esi |
1994 | pop esi |
2091 | mov dword [edi-32], '.. ' |
1995 | mov dword [edi-32], '.. ' |
2092 | mov dword [edi-32+4], ' ' |
1996 | mov dword [edi-32+4], ' ' |
2093 | mov dword [edi-32+8], ' ' |
1997 | mov dword [edi-32+8], ' ' |
2094 | mov byte [edi-32+11], 10h |
1998 | mov byte [edi-32+11], 10h |
2095 | mov ecx, [esp+20+8] |
1999 | mov ecx, [esp+20+36] |
2096 | cmp ecx, [ROOT_CLUSTER] |
2000 | cmp ecx, [ebp+FAT.ROOT_CLUSTER] |
2097 | jnz @f |
2001 | jnz @f |
2098 | xor ecx, ecx |
2002 | xor ecx, ecx |
2099 | @@: |
2003 | @@: |
2100 | mov word [edi-32+26], cx |
2004 | mov word [edi-32+26], cx |
2101 | shr ecx, 16 |
2005 | shr ecx, 16 |
Line 2104... | Line 2008... | ||
2104 | 2008 | ||
2105 | ;---------------------------------------------------------------- |
2009 | ;---------------------------------------------------------------- |
2106 | ; |
2010 | ; |
2107 | ; fs_HdWrite - LFN variant for writing to hard disk |
2011 | ; fs_HdWrite - LFN variant for writing to hard disk |
- | 2012 | ; |
|
- | 2013 | ; Obsolete, will be replaced with filesystem-specific functions. |
|
2108 | ; |
2014 | ; |
2109 | ; esi points to filename |
2015 | ; esi points to filename |
2110 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
2016 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
2111 | ; may be ebx=0 - start from first byte |
2017 | ; may be ebx=0 - start from first byte |
2112 | ; ecx number of bytes to write, 0+ |
2018 | ; ecx number of bytes to write, 0+ |
2113 | ; edx mem location to data |
2019 | ; edx mem location to data |
2114 | ; |
2020 | ; |
2115 | ; ret ebx = bytes written (maybe 0) |
2021 | ; ret ebx = bytes written (maybe 0) |
2116 | ; eax = 0 ok write or other = errormsg |
2022 | ; eax = 0 ok write or other = errormsg |
2117 | ; |
2023 | ; |
2118 | ;-------------------------------------------------------------- |
2024 | ;-------------------------------------------------------------- |
2119 | fs_HdWrite.access_denied: |
2025 | fat_Write.access_denied: |
2120 | push ERROR_ACCESS_DENIED |
2026 | push ERROR_ACCESS_DENIED |
2121 | fs_HdWrite.ret0: |
2027 | fs_HdWrite.ret0: |
2122 | pop eax |
2028 | pop eax |
2123 | xor ebx, ebx |
2029 | xor ebx, ebx |
Line 2124... | Line 2030... | ||
2124 | ret |
2030 | ret |
2125 | 2031 | ||
2126 | fs_HdWrite.ret11: |
2032 | fs_HdWrite.ret11: |
Line 2127... | Line 2033... | ||
2127 | push 11 |
2033 | push ERROR_DEVICE |
2128 | jmp fs_HdWrite.ret0 |
- | |
2129 | - | ||
2130 | fs_HdWrite: |
- | |
2131 | cmp [fs_type], 1 |
- | |
2132 | jz ntfs_HdWrite |
2034 | jmp fs_HdWrite.ret0 |
2133 | cmp [fs_type], 2 |
2035 | |
2134 | jz ext2_HdWrite |
2036 | fs_HdWrite: |
2135 | cmp [fs_type], 16 |
2037 | cmp [fs_type], 16 |
- | 2038 | jz @f |
|
- | 2039 | cmp [fs_type], 32 |
|
- | 2040 | jz @f |
|
- | 2041 | cmp [fs_type], 1 |
|
2136 | jz @f |
2042 | jz ntfs_HdWrite |
2137 | cmp [fs_type], 32 |
2043 | cmp [fs_type], 2 |
2138 | jz @f |
2044 | jz ext2_HdWrite |
- | 2045 | push ERROR_UNKNOWN_FS |
|
- | 2046 | jmp .ret0 |
|
- | 2047 | @@: |
|
- | 2048 | sub ebx, 4 |
|
- | 2049 | push ebp |
|
- | 2050 | mov ebp, [fs_dependent_data_start.partition] |
|
- | 2051 | call fat_Write |
|
- | 2052 | pop ebp |
|
- | 2053 | ret |
|
- | 2054 | ||
- | 2055 | ;---------------------------------------------------------------- |
|
- | 2056 | ; fat_Write - FAT16/32 implementation of writing to file |
|
- | 2057 | ; in: ebp = pointer to FAT structure |
|
- | 2058 | ; in: esi+[esp+4] = name |
|
- | 2059 | ; in: ebx = pointer to parameters from sysfunc 70 |
|
2139 | push ERROR_UNKNOWN_FS |
2060 | ; out: eax, ebx = return values for sysfunc 70 |
2140 | jmp .ret0 |
2061 | ;---------------------------------------------------------------- |
2141 | @@: |
- | |
2142 | cmp byte [esi], 0 |
2062 | fat_Write: |
2143 | jz .access_denied |
2063 | cmp byte [esi], 0 |
2144 | pushad |
2064 | jz .access_denied |
2145 | call hd_find_lfn |
- | |
2146 | pushfd |
- | |
2147 | cmp [hd_error], 0 |
- | |
2148 | jz @f |
- | |
2149 | popfd |
- | |
2150 | popad |
- | |
2151 | push 11 |
- | |
2152 | jmp .ret0 |
2065 | call fat_lock |
2153 | @@: |
2066 | push edi |
2154 | popfd |
2067 | stdcall hd_find_lfn, [esp+4+4] |
- | 2068 | jnc .found |
|
2155 | jnc .found |
2069 | pop edi |
2156 | popad |
2070 | push eax |
2157 | push ERROR_FILE_NOT_FOUND |
2071 | call fat_unlock |
2158 | jmp .ret0 |
- | |
2159 | .found: |
- | |
2160 | ; FAT does not support files larger than 4GB |
2072 | jmp fs_HdWrite.ret0 |
2161 | test ebx, ebx |
2073 | .found: |
2162 | jz .l1 |
2074 | ; FAT does not support files larger than 4GB |
2163 | cmp dword [ebx+4], 0 |
2075 | cmp dword [ebx+8], 0 |
2164 | jz @f |
2076 | jz @f |
- | 2077 | .eof: |
|
2165 | .eof: |
2078 | pop edi |
2166 | popad |
2079 | push ERROR_END_OF_FILE |
2167 | push ERROR_END_OF_FILE |
2080 | call fat_unlock |
2168 | jmp .ret0 |
2081 | jmp fs_HdWrite.ret0 |
- | 2082 | @@: |
|
2169 | @@: |
2083 | mov ecx, [ebx+12] |
2170 | mov ebx, [ebx] |
2084 | mov edx, [ebx+16] |
Line 2171... | Line 2085... | ||
2171 | .l1: |
2085 | mov ebx, [ebx+4] |
2172 | ; now edi points to direntry, ebx=start byte to write, |
2086 | ; now edi points to direntry, ebx=start byte to write, |
2173 | ; ecx=number of bytes to write, edx=data pointer |
2087 | ; ecx=number of bytes to write, edx=data pointer |
- | 2088 | ||
2174 | 2089 | ; extend file if needed |
|
2175 | ; extend file if needed |
2090 | add ecx, ebx |
Line 2176... | Line 2091... | ||
2176 | add ecx, ebx |
2091 | jc .eof ; FAT does not support files larger than 4GB |
2177 | jc .eof ; FAT does not support files larger than 4GB |
2092 | push edx |
Line 2194... | Line 2109... | ||
2194 | mov [esp+4], eax |
2109 | mov [esp+4], eax |
2195 | ; hd_extend_file can return three error codes: FAT table error, device error or disk full. |
2110 | ; hd_extend_file can return three error codes: FAT table error, device error or disk full. |
2196 | ; First two cases are fatal errors, in third case we may write some data |
2111 | ; First two cases are fatal errors, in third case we may write some data |
2197 | cmp al, ERROR_DISK_FULL |
2112 | cmp al, ERROR_DISK_FULL |
2198 | jz .disk_full |
2113 | jz .disk_full |
- | 2114 | call fat_unlock |
|
2199 | pop eax |
2115 | pop eax |
2200 | pop eax |
2116 | pop eax |
2201 | mov [esp+4+28], eax |
2117 | pop ecx |
2202 | pop eax |
2118 | pop edx |
2203 | popad |
2119 | pop edi |
2204 | xor ebx, ebx |
2120 | xor ebx, ebx |
2205 | ret |
2121 | ret |
2206 | .disk_full: |
2122 | .disk_full: |
2207 | ; correct number of bytes to write |
2123 | ; correct number of bytes to write |
2208 | mov ecx, [edi+28] |
2124 | mov ecx, [edi+28] |
2209 | cmp ecx, ebx |
2125 | cmp ecx, ebx |
2210 | ja .length_ok |
2126 | ja .length_ok |
- | 2127 | push 0 |
|
2211 | .ret: |
2128 | .ret: |
- | 2129 | pop eax |
|
- | 2130 | sub edx, [esp+12] |
|
- | 2131 | mov ebx, edx ; ebx=number of written bytes |
|
2212 | call update_disk |
2132 | call update_disk |
2213 | cmp [hd_error], 0 |
2133 | test eax, eax |
2214 | jz @f |
2134 | jz @f |
2215 | mov byte [esp+4], 11 |
2135 | mov byte [esp+4], ERROR_DEVICE |
2216 | @@: |
2136 | @@: |
- | 2137 | call fat_unlock |
|
2217 | pop eax |
2138 | pop eax |
2218 | pop eax |
2139 | pop eax |
2219 | mov [esp+4+28], eax ; eax=return value |
- | |
2220 | pop eax |
2140 | pop ecx |
2221 | sub edx, [esp+20] |
2141 | pop edx |
2222 | mov [esp+16], edx ; ebx=number of written bytes |
- | |
2223 | popad |
2142 | pop edi |
2224 | ret |
2143 | ret |
2225 | .length_ok: |
2144 | .length_ok: |
2226 | mov esi, [edi+28] |
2145 | mov esi, [edi+28] |
2227 | mov eax, [edi+20-2] |
2146 | mov eax, [edi+20-2] |
2228 | mov ax, [edi+26] |
2147 | mov ax, [edi+26] |
2229 | mov edi, eax ; edi=current cluster |
2148 | mov edi, eax ; edi=current cluster |
2230 | xor ebp, ebp ; ebp=current sector in cluster |
2149 | push 0 ; current sector in cluster |
2231 | ; save directory |
2150 | ; save directory |
2232 | mov eax, [esp+8] |
2151 | mov eax, [esp+12] |
2233 | push ebx |
2152 | push ebx |
2234 | mov ebx, buffer |
2153 | lea ebx, [ebp+FAT.buffer] |
2235 | call hd_write |
2154 | call fs_write32_sys |
2236 | pop ebx |
2155 | pop ebx |
2237 | cmp [hd_error], 0 |
2156 | test eax, eax |
2238 | jz @f |
2157 | jz @f |
2239 | .device_err: |
2158 | .device_err: |
2240 | mov byte [esp+4], 11 |
2159 | mov byte [esp+8], ERROR_DEVICE |
- | 2160 | jmp .ret |
|
- | 2161 | .fat_err: |
|
- | 2162 | mov byte [esp+8], ERROR_FAT_TABLE |
|
2241 | jmp .ret |
2163 | jmp .ret |
2242 | @@: |
2164 | @@: |
Line 2243... | Line 2165... | ||
2243 | 2165 | ||
2244 | ; now ebx=start pos, ecx=end pos, both lie inside file |
2166 | ; now ebx=start pos, ecx=end pos, both lie inside file |
2245 | sub ecx, ebx |
2167 | sub ecx, ebx |
2246 | jz .ret |
2168 | jz .ret |
2247 | .write_loop: |
2169 | .write_loop: |
2248 | ; skip unmodified sectors |
2170 | ; skip unmodified sectors |
2249 | cmp dword [esp], 0x200 |
2171 | cmp dword [esp+4], 0x200 |
2250 | jb .modify |
2172 | jb .modify |
2251 | sub ebx, 0x200 |
2173 | sub ebx, 0x200 |
2252 | jae .skip |
2174 | jae .skip |
2253 | add ebx, 0x200 |
2175 | add ebx, 0x200 |
Line 2267... | Line 2189... | ||
2267 | @@: |
2189 | @@: |
2268 | ; get current sector number |
2190 | ; get current sector number |
2269 | mov eax, edi |
2191 | mov eax, edi |
2270 | dec eax |
2192 | dec eax |
2271 | dec eax |
2193 | dec eax |
2272 | imul eax, [SECTORS_PER_CLUSTER] |
2194 | imul eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
2273 | add eax, [DATA_START] |
2195 | add eax, [ebp+FAT.DATA_START] |
2274 | add eax, ebp |
2196 | add eax, [esp+4] |
2275 | ; load sector if needed |
2197 | ; load sector if needed |
2276 | cmp dword [esp+4], 0 ; we don't need to read uninitialized data |
2198 | cmp dword [esp+8], 0 ; we don't need to read uninitialized data |
2277 | jz .noread |
2199 | jz .noread |
2278 | cmp ecx, 0x200 ; we don't need to read sector if it is fully rewritten |
2200 | cmp ecx, 0x200 ; we don't need to read sector if it is fully rewritten |
2279 | jz .noread |
2201 | jz .noread |
2280 | cmp ecx, esi ; (same for the last sector) |
2202 | cmp ecx, esi ; (same for the last sector) |
2281 | jz .noread |
2203 | jz .noread |
2282 | push ebx |
2204 | push eax ebx |
2283 | mov ebx, buffer |
2205 | lea ebx, [ebp+FAT.buffer] |
2284 | call hd_read |
2206 | call fs_read32_app |
2285 | pop ebx |
2207 | test eax, eax |
2286 | cmp [hd_error], 0 |
2208 | pop ebx eax |
2287 | jz @f |
2209 | jz @f |
2288 | .device_err2: |
2210 | .device_err2: |
2289 | pop ecx |
2211 | pop ecx |
2290 | jmp .device_err |
2212 | jmp .device_err |
2291 | @@: |
2213 | @@: |
2292 | .noread: |
2214 | .noread: |
2293 | ; zero uninitialized data if file was extended (because hd_extend_file does not this) |
2215 | ; zero uninitialized data if file was extended (because hd_extend_file does not this) |
2294 | push eax ecx edi |
2216 | push eax ecx edi |
2295 | xor eax, eax |
2217 | xor eax, eax |
2296 | mov ecx, 0x200 |
2218 | mov ecx, 0x200 |
2297 | sub ecx, [esp+4+12] |
2219 | sub ecx, [esp+8+12] |
2298 | jbe @f |
2220 | jbe @f |
2299 | mov edi, buffer |
2221 | lea edi, [ebp+FAT.buffer] |
2300 | add edi, [esp+4+12] |
2222 | add edi, [esp+8+12] |
2301 | rep stosb |
2223 | rep stosb |
2302 | @@: |
2224 | @@: |
2303 | ; zero uninitialized data in the last sector |
2225 | ; zero uninitialized data in the last sector |
2304 | mov ecx, 0x200 |
2226 | mov ecx, 0x200 |
2305 | sub ecx, esi |
2227 | sub ecx, esi |
2306 | jbe @f |
2228 | jbe @f |
2307 | mov edi, buffer |
2229 | lea edi, [ebp+FAT.buffer+esi] |
2308 | add edi, esi |
- | |
2309 | rep stosb |
2230 | rep stosb |
2310 | @@: |
2231 | @@: |
2311 | pop edi ecx |
2232 | pop edi ecx |
2312 | ; copy new data |
2233 | ; copy new data |
2313 | mov eax, edx |
2234 | mov eax, edx |
2314 | neg ebx |
2235 | neg ebx |
2315 | jecxz @f |
2236 | jecxz @f |
2316 | add ebx, buffer+0x200 |
2237 | lea ebx, [ebp+FAT.buffer+0x200+ebx] |
2317 | call memmove |
2238 | call memmove |
2318 | xor ebx, ebx |
2239 | xor ebx, ebx |
2319 | @@: |
2240 | @@: |
2320 | pop eax |
2241 | pop eax |
2321 | ; save sector |
2242 | ; save sector |
2322 | push ebx |
2243 | push ebx |
2323 | mov ebx, buffer |
2244 | lea ebx, [ebp+FAT.buffer] |
2324 | call hd_write |
2245 | call fs_write32_app |
2325 | pop ebx |
2246 | pop ebx |
2326 | cmp [hd_error], 0 |
2247 | test eax, eax |
2327 | jnz .device_err2 |
2248 | jnz .device_err2 |
2328 | add edx, ecx |
2249 | add edx, ecx |
2329 | sub [esp], ecx |
2250 | sub [esp], ecx |
2330 | pop ecx |
2251 | pop ecx |
2331 | jz .ret |
2252 | jz .ret |
2332 | .skip: |
2253 | .skip: |
2333 | ; next sector |
2254 | ; next sector |
- | 2255 | pop eax |
|
2334 | inc ebp |
2256 | inc eax |
- | 2257 | push eax |
|
2335 | cmp ebp, [SECTORS_PER_CLUSTER] |
2258 | cmp eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
2336 | jb @f |
2259 | jb @f |
2337 | xor ebp, ebp |
2260 | and dword [esp], 0 |
2338 | mov eax, edi |
2261 | mov eax, edi |
2339 | call get_FAT |
2262 | call get_FAT |
2340 | mov edi, eax |
2263 | mov edi, eax |
- | 2264 | jc .device_err |
|
2341 | cmp [hd_error], 0 |
2265 | cmp edi, 2 |
- | 2266 | jb .fat_err |
|
- | 2267 | cmp edi, [ebp+FAT.fatRESERVED] |
|
2342 | jnz .device_err |
2268 | jae .fat_err |
2343 | @@: |
2269 | @@: |
2344 | sub esi, 0x200 |
2270 | sub esi, 0x200 |
2345 | jae @f |
2271 | jae @f |
2346 | xor esi, esi |
2272 | xor esi, esi |
2347 | @@: |
2273 | @@: |
2348 | sub dword [esp], 0x200 |
2274 | sub dword [esp+4], 0x200 |
2349 | jae @f |
2275 | jae @f |
2350 | and dword [esp], 0 |
2276 | and dword [esp+4], 0 |
2351 | @@: |
2277 | @@: |
2352 | jmp .write_loop |
2278 | jmp .write_loop |
Line 2353... | Line 2279... | ||
2353 | 2279 | ||
2354 | hd_extend_file.zero_size: |
2280 | hd_extend_file.zero_size: |
2355 | xor eax, eax |
2281 | xor eax, eax |
Line 2356... | Line 2282... | ||
2356 | jmp hd_extend_file.start_extend |
2282 | jmp hd_extend_file.start_extend |
2357 | 2283 | ||
2358 | ; extends file on hd to given size (new data area is undefined) |
2284 | ; extends file on hd to given size (new data area is undefined) |
2359 | ; in: edi->direntry, ecx=new size |
2285 | ; in: edi->direntry, ecx=new size |
2360 | ; out: CF=0 => OK, eax=0 |
2286 | ; out: CF=0 => OK, eax=0 |
2361 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL or 11) |
2287 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL or ERROR_DEVICE) |
2362 | hd_extend_file: |
2288 | hd_extend_file: |
2363 | push ebp |
2289 | push esi |
2364 | mov ebp, [SECTORS_PER_CLUSTER] |
2290 | mov esi, [ebp+FAT.SECTORS_PER_CLUSTER] |
2365 | imul ebp, [BYTES_PER_SECTOR] |
2291 | imul esi, [ebp+FAT.BYTES_PER_SECTOR] |
2366 | push ecx |
2292 | push ecx |
2367 | ; find the last cluster of file |
2293 | ; find the last cluster of file |
2368 | mov eax, [edi+20-2] |
2294 | mov eax, [edi+20-2] |
2369 | mov ax, [edi+26] |
2295 | mov ax, [edi+26] |
2370 | mov ecx, [edi+28] |
2296 | mov ecx, [edi+28] |
2371 | jecxz .zero_size |
2297 | jecxz .zero_size |
2372 | .last_loop: |
2298 | .last_loop: |
2373 | sub ecx, ebp |
2299 | sub ecx, esi |
2374 | jbe .last_found |
- | |
2375 | call get_FAT |
2300 | jbe .last_found |
2376 | cmp [hd_error], 0 |
2301 | call get_FAT |
2377 | jz @f |
2302 | jnc @f |
2378 | .device_err: |
2303 | .device_err: |
2379 | pop ecx |
2304 | pop ecx |
2380 | .device_err2: |
2305 | .device_err2: |
2381 | pop ebp |
2306 | pop esi |
2382 | push 11 |
2307 | push ERROR_DEVICE |
2383 | .ret_err: |
2308 | .ret_err: |
2384 | pop eax |
2309 | pop eax |
2385 | stc |
2310 | stc |
2386 | ret |
2311 | ret |
2387 | @@: |
2312 | @@: |
2388 | cmp eax, 2 |
2313 | cmp eax, 2 |
2389 | jb .fat_err |
2314 | jb .fat_err |
2390 | cmp eax, [fatRESERVED] |
2315 | cmp eax, [ebp+FAT.fatRESERVED] |
2391 | jb .last_loop |
2316 | jb .last_loop |
2392 | .fat_err: |
2317 | .fat_err: |
2393 | pop ecx ebp |
2318 | pop ecx esi |
2394 | push ERROR_FAT_TABLE |
2319 | push ERROR_FAT_TABLE |
2395 | jmp .ret_err |
2320 | jmp .ret_err |
2396 | .last_found: |
2321 | .last_found: |
2397 | push eax |
- | |
2398 | call get_FAT |
2322 | push eax |
2399 | cmp [hd_error], 0 |
2323 | call get_FAT |
2400 | jz @f |
2324 | jnc @f |
2401 | pop eax |
2325 | pop eax |
2402 | jmp .device_err |
2326 | jmp .device_err |
2403 | @@: |
2327 | @@: |
2404 | cmp eax, [fatRESERVED] |
2328 | cmp eax, [ebp+FAT.fatRESERVED] |
2405 | pop eax |
2329 | pop eax |
2406 | jb .fat_err |
2330 | jb .fat_err |
2407 | ; set length to full number of clusters |
2331 | ; set length to full number of clusters |
Line 2416... | Line 2340... | ||
2416 | jae .extend_done |
2340 | jae .extend_done |
2417 | ; add new cluster |
2341 | ; add new cluster |
2418 | push eax |
2342 | push eax |
2419 | call get_free_FAT |
2343 | call get_free_FAT |
2420 | jc .disk_full |
2344 | jc .disk_full |
2421 | mov edx, [fatEND] |
2345 | mov edx, [ebp+FAT.fatEND] |
2422 | call set_FAT |
2346 | call set_FAT |
2423 | mov edx, eax |
2347 | mov edx, eax |
2424 | pop eax |
2348 | pop eax |
2425 | test eax, eax |
2349 | test eax, eax |
2426 | jz .first_cluster |
2350 | jz .first_cluster |
Line 2437... | Line 2361... | ||
2437 | push ecx |
2361 | push ecx |
2438 | mov ecx, -1 |
2362 | mov ecx, -1 |
2439 | call add_disk_free_space |
2363 | call add_disk_free_space |
2440 | pop ecx |
2364 | pop ecx |
2441 | mov eax, edx |
2365 | mov eax, edx |
2442 | cmp [hd_error], 0 |
- | |
2443 | jnz .device_err3 |
- | |
2444 | add [edi+28], ebp |
2366 | add [edi+28], esi |
2445 | jmp .extend_loop |
2367 | jmp .extend_loop |
2446 | .extend_done: |
2368 | .extend_done: |
2447 | mov [edi+28], ecx |
2369 | mov [edi+28], ecx |
2448 | pop edx ebp |
2370 | pop edx esi |
2449 | xor eax, eax ; CF=0 |
2371 | xor eax, eax ; CF=0 |
2450 | ret |
2372 | ret |
2451 | .device_err3: |
2373 | .device_err3: |
2452 | pop edx |
2374 | pop edx |
2453 | jmp .device_err2 |
2375 | jmp .device_err2 |
2454 | .disk_full: |
2376 | .disk_full: |
2455 | pop eax edx ebp |
2377 | pop eax edx esi |
2456 | push ERROR_DISK_FULL |
2378 | push ERROR_DISK_FULL |
2457 | pop eax |
2379 | pop eax |
2458 | cmp [hd_error], 0 |
- | |
2459 | jz @f |
- | |
2460 | mov al, 11 |
- | |
2461 | @@: |
- | |
2462 | stc |
2380 | stc |
2463 | ret |
2381 | ret |
Line 2464... | Line 2382... | ||
2464 | 2382 | ||
2465 | ;---------------------------------------------------------------- |
2383 | ;---------------------------------------------------------------- |
2466 | ; |
2384 | ; |
2467 | ; fs_HdSetFileEnd - set end of file on hard disk |
2385 | ; fs_HdSetFileEnd - set end of file on hard disk |
- | 2386 | ; |
|
- | 2387 | ; Obsolete, will be replaced with filesystem-specific functions. |
|
2468 | ; |
2388 | ; |
2469 | ; esi points to filename |
2389 | ; esi points to filename |
2470 | ; ebx points to 64-bit number = new file size |
2390 | ; ebx points to 64-bit number = new file size |
2471 | ; ecx ignored (reserved) |
2391 | ; ecx ignored (reserved) |
2472 | ; edx ignored (reserved) |
2392 | ; edx ignored (reserved) |
2473 | ; |
2393 | ; |
2474 | ; ret eax = 0 ok or other = errormsg |
2394 | ; ret eax = 0 ok or other = errormsg |
2475 | ; |
2395 | ; |
2476 | ;-------------------------------------------------------------- |
2396 | ;-------------------------------------------------------------- |
2477 | fs_HdSetFileEnd: |
- | |
2478 | cmp [fs_type], 1 |
- | |
2479 | jz ntfs_HdSetFileEnd |
- | |
2480 | cmp [fs_type], 2 |
- | |
2481 | jz ext2_HdSetFileEnd |
2397 | fs_HdSetFileEnd: |
2482 | cmp [fs_type], 16 |
2398 | cmp [fs_type], 16 |
2483 | jz @f |
2399 | jz @f |
2484 | cmp [fs_type], 32 |
2400 | cmp [fs_type], 32 |
- | 2401 | jz @f |
|
- | 2402 | cmp [fs_type], 1 |
|
- | 2403 | jz ntfs_HdSetFileEnd |
|
- | 2404 | cmp [fs_type], 2 |
|
2485 | jz @f |
2405 | jz ext2_HdSetFileEnd |
2486 | push ERROR_UNKNOWN_FS |
- | |
2487 | .ret: |
2406 | push ERROR_UNKNOWN_FS |
2488 | pop eax |
2407 | pop eax |
2489 | ret |
2408 | ret |
- | 2409 | @@: |
|
- | 2410 | sub ebx, 4 |
|
- | 2411 | push ebp |
|
- | 2412 | mov ebp, [fs_dependent_data_start.partition] |
|
- | 2413 | call fat_SetFileEnd |
|
- | 2414 | pop ebp |
|
- | 2415 | ret |
|
- | 2416 | ||
- | 2417 | ;---------------------------------------------------------------- |
|
- | 2418 | ; fat_SetFileEnd - FAT16/32 implementation of setting end-of-file |
|
- | 2419 | ; in: ebp = pointer to FAT structure |
|
- | 2420 | ; in: esi+[esp+4] = name |
|
- | 2421 | ; in: ebx = pointer to parameters from sysfunc 70 |
|
- | 2422 | ; out: eax, ebx = return values for sysfunc 70 |
|
- | 2423 | ;---------------------------------------------------------------- |
|
- | 2424 | fat_SetFileEnd: |
|
- | 2425 | call fat_lock |
|
2490 | @@: |
2426 | push edi |
2491 | cmp byte [esi], 0 |
2427 | cmp byte [esi], 0 |
2492 | jnz @f |
2428 | jnz @f |
2493 | .access_denied: |
2429 | .access_denied: |
2494 | push ERROR_ACCESS_DENIED |
- | |
2495 | jmp .ret |
2430 | push ERROR_ACCESS_DENIED |
2496 | @@: |
- | |
2497 | push edi |
2431 | .ret: |
2498 | call hd_find_lfn |
- | |
2499 | pushfd |
- | |
2500 | cmp [hd_error], 0 |
2432 | call fat_unlock |
2501 | jz @f |
- | |
2502 | popfd |
2433 | pop eax |
2503 | push 11 |
2434 | pop edi |
2504 | jmp .ret |
2435 | ret |
2505 | @@: |
2436 | @@: |
2506 | popfd |
2437 | stdcall hd_find_lfn, [esp+4+4] |
- | 2438 | jnc @f |
|
2507 | jnc @f |
2439 | .reteax: |
2508 | pop edi |
- | |
2509 | push ERROR_FILE_NOT_FOUND |
2440 | push eax |
2510 | jmp .ret |
2441 | jmp .ret |
2511 | @@: |
2442 | @@: |
2512 | ; must not be directory |
2443 | ; must not be directory |
2513 | test byte [edi+11], 10h |
- | |
2514 | jz @f |
- | |
2515 | pop edi |
2444 | test byte [edi+11], 10h |
2516 | jmp .access_denied |
- | |
2517 | @@: |
2445 | jnz .access_denied |
2518 | ; file size must not exceed 4 Gb |
2446 | ; file size must not exceed 4 Gb |
2519 | cmp dword [ebx+4], 0 |
2447 | cmp dword [ebx+8], 0 |
2520 | jz @f |
- | |
2521 | pop edi |
2448 | jz @f |
2522 | push ERROR_END_OF_FILE |
2449 | push ERROR_END_OF_FILE |
2523 | jmp .ret |
2450 | jmp .ret |
2524 | @@: |
2451 | @@: |
2525 | push eax ; save directory sector |
2452 | push eax ; save directory sector |
2526 | ; set file modification date/time to current |
2453 | ; set file modification date/time to current |
2527 | call fat_update_datetime |
2454 | call fat_update_datetime |
2528 | mov eax, [ebx] |
2455 | mov eax, [ebx+4] |
2529 | cmp eax, [edi+28] |
2456 | cmp eax, [edi+28] |
2530 | jb .truncate |
2457 | jb .truncate |
2531 | ja .expand |
2458 | ja .expand |
2532 | pop eax |
2459 | pop eax |
2533 | mov ebx, buffer |
2460 | lea ebx, [ebp+FAT.buffer] |
2534 | call hd_write |
2461 | call fs_write32_sys |
2535 | pop edi |
2462 | pop edi |
2536 | xor eax, eax |
- | |
2537 | cmp [hd_error], 0 |
2463 | test eax, eax |
- | 2464 | jz @f |
|
2538 | jz @f |
2465 | push ERROR_DEVICE |
2539 | mov al, 11 |
2466 | jmp .ret |
- | 2467 | @@: |
|
2540 | @@: |
2468 | push 0 |
2541 | ret |
2469 | jmp .ret |
2542 | .expand: |
2470 | .expand: |
2543 | push ebx ebp ecx |
2471 | push ebx ebp ecx |
2544 | push dword [edi+28] ; save old size |
2472 | push dword [edi+28] ; save old size |
2545 | mov ecx, eax |
2473 | mov ecx, eax |
Line 2548... | Line 2476... | ||
2548 | jnc .expand_ok |
2476 | jnc .expand_ok |
2549 | cmp al, ERROR_DISK_FULL |
2477 | cmp al, ERROR_DISK_FULL |
2550 | jz .disk_full |
2478 | jz .disk_full |
2551 | .pop_ret: |
2479 | .pop_ret: |
2552 | call update_disk |
2480 | call update_disk |
2553 | pop eax ecx ebp ebx ecx edi edi |
2481 | pop eax ecx ecx ebp ebx ecx |
2554 | ret |
2482 | jmp .reteax |
2555 | .expand_ok: |
2483 | .expand_ok: |
2556 | .disk_full: |
2484 | .disk_full: |
2557 | ; save directory |
2485 | ; save directory |
2558 | mov eax, [edi+28] |
2486 | mov eax, [edi+28] |
2559 | xchg eax, [esp+20] |
2487 | xchg eax, [esp+20] |
2560 | mov ebx, buffer |
2488 | lea ebx, [ebp+FAT.buffer] |
2561 | call hd_write |
2489 | call fs_write32_sys |
- | 2490 | test eax, eax |
|
2562 | mov eax, [edi+20-2] |
2491 | mov eax, [edi+20-2] |
2563 | mov ax, [edi+26] |
2492 | mov ax, [edi+26] |
2564 | mov edi, eax |
2493 | mov edi, eax |
2565 | cmp [hd_error], 0 |
- | |
2566 | jz @f |
2494 | jz @f |
2567 | .pop_ret11: |
2495 | .pop_ret11: |
2568 | mov byte [esp], 11 |
2496 | mov byte [esp], ERROR_DEVICE |
2569 | jmp .pop_ret |
2497 | jmp .pop_ret |
2570 | @@: |
2498 | @@: |
- | 2499 | test edi, edi |
|
- | 2500 | jz .pop_ret |
|
2571 | ; now zero new data |
2501 | ; now zero new data |
2572 | xor ebp, ebp |
2502 | push 0 |
2573 | ; edi=current cluster, ebp=sector in cluster |
2503 | ; edi=current cluster, [esp]=sector in cluster |
2574 | ; [esp+20]=new size, [esp+4]=old size, [esp]=return code |
2504 | ; [esp+24]=new size, [esp+8]=old size, [esp+4]=return code |
2575 | .zero_loop: |
2505 | .zero_loop: |
- | 2506 | cmp edi, 2 |
|
- | 2507 | jb .error_fat |
|
- | 2508 | cmp edi, [ebp+FAT.fatRESERVED] |
|
- | 2509 | jae .error_fat |
|
2576 | sub dword [esp+4], 0x200 |
2510 | sub dword [esp+8], 0x200 |
2577 | jae .next_cluster |
2511 | jae .next_cluster |
2578 | lea eax, [edi-2] |
2512 | lea eax, [edi-2] |
2579 | imul eax, [SECTORS_PER_CLUSTER] |
2513 | imul eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
2580 | add eax, [DATA_START] |
2514 | add eax, [ebp+FAT.DATA_START] |
2581 | add eax, ebp |
2515 | add eax, [esp] |
2582 | cmp dword [esp+4], -0x200 |
2516 | cmp dword [esp+8], -0x200 |
2583 | jz .noread |
2517 | jz .noread |
- | 2518 | push eax |
|
2584 | mov ebx, buffer |
2519 | lea ebx, [ebp+FAT.buffer] |
2585 | call hd_read |
2520 | call fs_read32_app |
- | 2521 | test eax, eax |
|
2586 | cmp [hd_error], 0 |
2522 | pop eax |
2587 | jnz .err_next |
2523 | jnz .err_next |
2588 | .noread: |
2524 | .noread: |
2589 | mov ecx, [esp+4] |
2525 | mov ecx, [esp+8] |
2590 | neg ecx |
2526 | neg ecx |
2591 | push edi |
2527 | push edi |
2592 | mov edi, buffer+0x200 |
2528 | lea edi, [ebp+FAT.buffer+0x200] |
2593 | add edi, [esp+8] |
2529 | add edi, [esp+12] |
2594 | push eax |
2530 | push eax |
2595 | xor eax, eax |
2531 | xor eax, eax |
2596 | mov [esp+12], eax |
2532 | mov [esp+16], eax |
2597 | rep stosb |
2533 | rep stosb |
2598 | pop eax |
2534 | pop eax |
2599 | pop edi |
2535 | pop edi |
2600 | call hd_write |
2536 | call fs_write32_app |
2601 | cmp [hd_error], 0 |
2537 | test eax, eax |
2602 | jz .next_cluster |
2538 | jz .next_cluster |
2603 | .err_next: |
2539 | .err_next: |
2604 | mov byte [esp], 11 |
2540 | mov byte [esp+4], ERROR_DEVICE |
2605 | .next_cluster: |
2541 | .next_cluster: |
- | 2542 | pop eax |
|
2606 | sub dword [esp+20], 0x200 |
2543 | sub dword [esp+20], 0x200 |
2607 | jbe .pop_ret |
2544 | jbe .pop_ret |
2608 | inc ebp |
2545 | inc eax |
- | 2546 | push eax |
|
2609 | cmp ebp, [SECTORS_PER_CLUSTER] |
2547 | cmp eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
2610 | jb .zero_loop |
2548 | jb .zero_loop |
2611 | xor ebp, ebp |
2549 | and dword [esp], 0 |
2612 | mov eax, edi |
2550 | mov eax, edi |
2613 | call get_FAT |
2551 | call get_FAT |
2614 | mov edi, eax |
2552 | mov edi, eax |
2615 | cmp [hd_error], 0 |
2553 | jnc .zero_loop |
2616 | jnz .pop_ret11 |
2554 | pop eax |
2617 | jmp .zero_loop |
2555 | jmp .pop_ret11 |
2618 | .truncate: |
2556 | .truncate: |
2619 | mov [edi+28], eax |
2557 | mov [edi+28], eax |
2620 | push ecx |
2558 | push ecx |
2621 | mov ecx, [edi+20-2] |
2559 | mov ecx, [edi+20-2] |
2622 | mov cx, [edi+26] |
2560 | mov cx, [edi+26] |
2623 | push eax |
2561 | push eax |
2624 | test eax, eax |
2562 | test eax, eax |
2625 | jz .zero_size |
2563 | jz .zero_size |
2626 | ; find new last cluster |
2564 | ; find new last cluster |
2627 | @@: |
2565 | @@: |
- | 2566 | cmp ecx, 2 |
|
- | 2567 | jb .error_fat2 |
|
- | 2568 | cmp ecx, [ebp+FAT.fatRESERVED] |
|
- | 2569 | jae .error_fat2 |
|
2628 | mov eax, [SECTORS_PER_CLUSTER] |
2570 | mov eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
2629 | shl eax, 9 |
2571 | shl eax, 9 |
2630 | sub [esp], eax |
2572 | sub [esp], eax |
2631 | jbe @f |
2573 | jbe @f |
2632 | mov eax, ecx |
2574 | mov eax, ecx |
2633 | call get_FAT |
2575 | call get_FAT |
2634 | mov ecx, eax |
2576 | mov ecx, eax |
2635 | cmp [hd_error], 0 |
- | |
2636 | jz @b |
2577 | jnc @b |
2637 | .device_err3: |
2578 | .device_err3: |
2638 | pop eax ecx eax edi |
2579 | pop eax ecx eax edi |
- | 2580 | call update_disk |
|
- | 2581 | call fat_unlock |
|
2639 | push 11 |
2582 | push ERROR_DEVICE |
2640 | pop eax |
2583 | pop eax |
2641 | ret |
2584 | ret |
2642 | @@: |
2585 | @@: |
2643 | ; we will zero data at the end of last sector - remember it |
2586 | ; we will zero data at the end of last sector - remember it |
2644 | push ecx |
2587 | push ecx |
2645 | ; terminate FAT chain |
2588 | ; terminate FAT chain |
2646 | push edx |
2589 | push edx |
2647 | mov eax, ecx |
2590 | mov eax, ecx |
2648 | mov edx, [fatEND] |
2591 | mov edx, [ebp+FAT.fatEND] |
2649 | call set_FAT |
2592 | call set_FAT |
2650 | mov eax, edx |
2593 | mov eax, edx |
2651 | pop edx |
2594 | pop edx |
2652 | cmp [hd_error], 0 |
- | |
2653 | jz @f |
2595 | jnc @f |
2654 | .device_err4: |
2596 | .device_err4: |
2655 | pop ecx |
2597 | pop ecx |
2656 | jmp .device_err3 |
2598 | jmp .device_err3 |
2657 | .zero_size: |
2599 | .zero_size: |
2658 | and word [edi+20], 0 |
2600 | and word [edi+20], 0 |
Line 2660... | Line 2602... | ||
2660 | push 0 |
2602 | push 0 |
2661 | mov eax, ecx |
2603 | mov eax, ecx |
2662 | @@: |
2604 | @@: |
2663 | ; delete FAT chain |
2605 | ; delete FAT chain |
2664 | call clear_cluster_chain |
2606 | call clear_cluster_chain |
2665 | cmp [hd_error], 0 |
- | |
2666 | jnz .device_err4 |
2607 | jc .device_err4 |
2667 | ; save directory |
2608 | ; save directory |
2668 | mov eax, [esp+12] |
2609 | mov eax, [esp+12] |
2669 | push ebx |
2610 | push ebx |
2670 | mov ebx, buffer |
2611 | lea ebx, [ebp+FAT.buffer] |
2671 | call hd_write |
2612 | call fs_write32_sys |
2672 | pop ebx |
2613 | pop ebx |
2673 | cmp [hd_error], 0 |
2614 | test eax, eax |
2674 | jnz .device_err4 |
2615 | jnz .device_err4 |
2675 | ; zero last sector, ignore errors |
2616 | ; zero last sector, ignore errors |
2676 | pop ecx |
2617 | pop ecx |
2677 | pop eax |
2618 | pop eax |
2678 | dec ecx |
2619 | dec ecx |
2679 | imul ecx, [SECTORS_PER_CLUSTER] |
2620 | imul ecx, [ebp+FAT.SECTORS_PER_CLUSTER] |
2680 | add ecx, [DATA_START] |
2621 | add ecx, [ebp+FAT.DATA_START] |
2681 | push eax |
2622 | push eax |
2682 | sar eax, 9 |
2623 | sar eax, 9 |
2683 | add ecx, eax |
2624 | add ecx, eax |
2684 | pop eax |
2625 | pop eax |
2685 | and eax, 0x1FF |
2626 | and eax, 0x1FF |
2686 | jz .truncate_done |
2627 | jz .truncate_done |
2687 | push ebx eax |
2628 | push ebx eax |
2688 | mov eax, ecx |
2629 | mov eax, ecx |
2689 | mov ebx, buffer |
2630 | lea ebx, [ebp+FAT.buffer] |
2690 | call hd_read |
2631 | call fs_read32_app |
2691 | pop eax |
2632 | pop eax |
2692 | lea edi, [buffer+eax] |
2633 | lea edi, [ebp+FAT.buffer+eax] |
2693 | push ecx |
2634 | push ecx |
2694 | mov ecx, 0x200 |
2635 | mov ecx, 0x200 |
2695 | sub ecx, eax |
2636 | sub ecx, eax |
2696 | xor eax, eax |
2637 | xor eax, eax |
2697 | rep stosb |
2638 | rep stosb |
2698 | pop eax |
2639 | pop eax |
2699 | call hd_write |
2640 | call fs_write32_app |
2700 | pop ebx |
2641 | pop ebx |
2701 | .truncate_done: |
2642 | .truncate_done: |
2702 | pop ecx eax edi |
2643 | pop ecx eax edi |
2703 | call update_disk |
2644 | call update_disk |
- | 2645 | call fat_unlock |
|
2704 | xor eax, eax |
2646 | xor eax, eax |
2705 | cmp [hd_error], 0 |
2647 | ret |
- | 2648 | .error_fat: |
|
2706 | jz @f |
2649 | pop eax |
- | 2650 | mov byte [esp], ERROR_FAT_TABLE |
|
2707 | mov al, 11 |
2651 | jmp .pop_ret |
2708 | @@: |
2652 | .error_fat2: |
- | 2653 | pop eax ecx eax edi |
|
- | 2654 | call update_disk |
|
- | 2655 | call fat_unlock |
|
- | 2656 | push ERROR_FAT_TABLE |
|
- | 2657 | pop eax |
|
2709 | ret |
2658 | ret |
Line 2710... | Line 2659... | ||
2710 | 2659 | ||
2711 | fs_HdGetFileInfo: |
- | |
2712 | cmp [fs_type], 1 |
- | |
2713 | jz ntfs_HdGetFileInfo |
- | |
2714 | cmp [fs_type], 2 |
- | |
2715 | jz ext2_HdGetFileInfo |
2660 | fs_HdGetFileInfo: |
2716 | cmp [fs_type], 16 |
2661 | cmp [fs_type], 16 |
2717 | jz @f |
2662 | jz @f |
2718 | cmp [fs_type], 32 |
2663 | cmp [fs_type], 32 |
- | 2664 | jz @f |
|
- | 2665 | cmp [fs_type], 1 |
|
- | 2666 | jz ntfs_HdGetFileInfo |
|
- | 2667 | cmp [fs_type], 2 |
|
2719 | jz @f |
2668 | jz ext2_HdGetFileInfo |
2720 | mov eax, ERROR_UNKNOWN_FS |
2669 | mov eax, ERROR_UNKNOWN_FS |
2721 | ret |
2670 | ret |
- | 2671 | @@: |
|
- | 2672 | sub ebx, 4 |
|
- | 2673 | push ebp |
|
- | 2674 | mov ebp, [fs_dependent_data_start.partition] |
|
- | 2675 | call fat_GetFileInfo |
|
- | 2676 | pop ebp |
|
- | 2677 | ret |
|
- | 2678 | ||
- | 2679 | ;---------------------------------------------------------------- |
|
- | 2680 | ; fat_GetFileInfo - FAT16/32 implementation of getting file info |
|
- | 2681 | ; in: ebp = pointer to FAT structure |
|
- | 2682 | ; in: esi+[esp+4] = name |
|
- | 2683 | ; in: ebx = pointer to parameters from sysfunc 70 |
|
- | 2684 | ; out: eax, ebx = return values for sysfunc 70 |
|
- | 2685 | ;---------------------------------------------------------------- |
|
2722 | @@: |
2686 | fat_GetFileInfo: |
2723 | cmp byte [esi], 0 |
2687 | cmp byte [esi], 0 |
2724 | jnz @f |
2688 | jnz @f |
2725 | mov eax, 2 |
2689 | mov eax, 2 |
2726 | ret |
2690 | ret |
2727 | @@: |
2691 | @@: |
2728 | push edi |
2692 | push edi |
- | 2693 | call fat_lock |
|
- | 2694 | stdcall hd_find_lfn, [esp+4+4] |
|
2729 | call hd_find_lfn |
2695 | jc .error |
- | 2696 | push ebp |
|
- | 2697 | xor ebp, ebp |
|
- | 2698 | mov esi, [ebx+16] |
|
- | 2699 | mov dword [esi+4], ebp |
|
- | 2700 | call fat_entry_to_bdfe2 |
|
2730 | pushfd |
2701 | pop ebp |
- | 2702 | call fat_unlock |
|
2731 | cmp [hd_error], 0 |
2703 | xor eax, eax |
2732 | jz @f |
2704 | pop edi |
- | 2705 | ret |
|
- | 2706 | .error: |
|
- | 2707 | push eax |
|
- | 2708 | call fat_unlock |
|
2733 | popfd |
2709 | pop eax |
2734 | pop edi |
- | |
2735 | mov eax, 11 |
2710 | pop edi |
2736 | ret |
- | |
2737 | @@: |
- | |
2738 | popfd |
- | |
Line 2739... | Line 2711... | ||
2739 | jmp fs_GetFileInfo_finish |
2711 | ret |
2740 | - | ||
2741 | fs_HdSetFileInfo: |
- | |
2742 | cmp [fs_type], 1 |
- | |
2743 | jz ntfs_HdSetFileInfo |
- | |
2744 | cmp [fs_type], 2 |
2712 | |
2745 | jz ext2_HdSetFileInfo |
2713 | fs_HdSetFileInfo: |
2746 | cmp [fs_type], 16 |
2714 | cmp [fs_type], 16 |
2747 | jz @f |
2715 | jz @f |
- | 2716 | cmp [fs_type], 32 |
|
- | 2717 | jz @f |
|
- | 2718 | cmp [fs_type], 1 |
|
- | 2719 | jz ntfs_HdSetFileInfo |
|
2748 | cmp [fs_type], 32 |
2720 | cmp [fs_type], 2 |
2749 | jz @f |
2721 | jz ext2_HdSetFileInfo |
2750 | mov eax, ERROR_UNKNOWN_FS |
2722 | mov eax, ERROR_UNKNOWN_FS |
- | 2723 | ret |
|
- | 2724 | @@: |
|
- | 2725 | sub ebx, 4 |
|
- | 2726 | push ebp |
|
- | 2727 | mov ebp, [fs_dependent_data_start.partition] |
|
- | 2728 | call fat_SetFileInfo |
|
- | 2729 | pop ebp |
|
- | 2730 | ret |
|
- | 2731 | ||
- | 2732 | ;---------------------------------------------------------------- |
|
- | 2733 | ; fat_SetFileInfo - FAT16/32 implementation of setting file info |
|
- | 2734 | ; in: ebp = pointer to FAT structure |
|
- | 2735 | ; in: esi+[esp+4] = name |
|
- | 2736 | ; in: ebx = pointer to parameters from sysfunc 70 |
|
- | 2737 | ; out: eax, ebx = return values for sysfunc 70 |
|
2751 | ret |
2738 | ;---------------------------------------------------------------- |
2752 | @@: |
2739 | fat_SetFileInfo: |
2753 | cmp byte [esi], 0 |
2740 | cmp byte [esi], 0 |
2754 | jnz @f |
2741 | jnz @f |
2755 | mov eax, 2 |
2742 | mov eax, 2 |
2756 | ret |
2743 | ret |
2757 | @@: |
2744 | @@: |
2758 | push edi |
- | |
2759 | call hd_find_lfn |
2745 | push edi |
2760 | pushfd |
2746 | call fat_lock |
2761 | cmp [hd_error], 0 |
- | |
2762 | jz @f |
- | |
2763 | popfd |
- | |
2764 | pop edi |
- | |
2765 | mov eax, 11 |
- | |
2766 | ret |
- | |
2767 | @@: |
- | |
2768 | popfd |
- | |
2769 | jnc @f |
- | |
2770 | pop edi |
- | |
2771 | mov eax, ERROR_FILE_NOT_FOUND |
- | |
2772 | ret |
2747 | stdcall hd_find_lfn, [esp+4+4] |
- | 2748 | jc .error |
|
2773 | @@: |
2749 | push eax |
2774 | push eax |
2750 | mov edx, [ebx+16] |
2775 | call bdfe_to_fat_entry |
2751 | call bdfe_to_fat_entry |
2776 | pop eax |
2752 | pop eax |
2777 | mov ebx, buffer |
2753 | lea ebx, [ebp+FAT.buffer] |
- | 2754 | call fs_write32_sys |
|
2778 | call hd_write |
2755 | call update_disk |
2779 | call update_disk |
2756 | call fat_unlock |
2780 | pop edi |
2757 | pop edi |
- | 2758 | xor eax, eax |
|
- | 2759 | ret |
|
- | 2760 | .error: |
|
- | 2761 | push eax |
|
- | 2762 | call fat_unlock |
|
- | 2763 | pop eax |
|
Line 2781... | Line 2764... | ||
2781 | xor eax, eax |
2764 | pop edi |
2782 | ret |
2765 | ret |
2783 | 2766 | ||
2784 | ;---------------------------------------------------------------- |
2767 | ;---------------------------------------------------------------- |
- | 2768 | ; |
|
- | 2769 | ; fs_HdDelete - delete file or empty folder from hard disk |
|
2785 | ; |
2770 | ; |
2786 | ; fs_HdDelete - delete file or empty folder from hard disk |
2771 | ; Obsolete, will be replaced with filesystem-specific functions. |
2787 | ; |
2772 | ; |
2788 | ; esi points to filename |
2773 | ; esi points to filename |
2789 | ; |
2774 | ; |
2790 | ; ret eax = 0 ok or other = errormsg |
2775 | ; ret eax = 0 ok or other = errormsg |
2791 | ; |
- | |
2792 | ;-------------------------------------------------------------- |
- | |
2793 | fs_HdDelete: |
- | |
2794 | cmp [fs_type], 1 |
- | |
2795 | jz ntfs_HdDelete |
2776 | ; |
2796 | cmp [fs_type], 2 |
2777 | ;-------------------------------------------------------------- |
2797 | jz ext2_HdDelete |
2778 | fs_HdDelete: |
2798 | cmp [fs_type], 16 |
2779 | cmp [fs_type], 16 |
- | 2780 | jz @f |
|
- | 2781 | cmp [fs_type], 32 |
|
- | 2782 | jz @f |
|
- | 2783 | cmp [fs_type], 1 |
|
2799 | jz @f |
2784 | jz ntfs_HdDelete |
2800 | cmp [fs_type], 32 |
- | |
2801 | jz @f |
2785 | cmp [fs_type], 2 |
2802 | push ERROR_UNKNOWN_FS |
2786 | jz ext2_HdDelete |
2803 | .pop_ret: |
2787 | push ERROR_UNKNOWN_FS |
- | 2788 | pop eax |
|
- | 2789 | ret |
|
- | 2790 | @@: |
|
- | 2791 | sub ebx, 4 |
|
- | 2792 | push ebp |
|
- | 2793 | mov ebp, [fs_dependent_data_start.partition] |
|
- | 2794 | call fat_Delete |
|
- | 2795 | pop ebp |
|
- | 2796 | ret |
|
- | 2797 | ||
- | 2798 | ;---------------------------------------------------------------- |
|
- | 2799 | ; fat_Delete - FAT16/32 implementation of deleting a file/folder |
|
- | 2800 | ; in: ebp = pointer to FAT structure |
|
- | 2801 | ; in: esi+[esp+4] = name |
|
- | 2802 | ; in: ebx = pointer to parameters from sysfunc 70 |
|
- | 2803 | ; out: eax, ebx = return values for sysfunc 70 |
|
2804 | pop eax |
2804 | ;---------------------------------------------------------------- |
2805 | ret |
2805 | fat_Delete: |
2806 | @@: |
2806 | call fat_lock |
2807 | cmp byte [esi], 0 |
2807 | cmp byte [esi], 0 |
2808 | jnz @f |
2808 | jnz @f |
- | 2809 | ; cannot delete root! |
|
- | 2810 | .access_denied: |
|
- | 2811 | push ERROR_ACCESS_DENIED |
|
2809 | ; cannot delete root! |
2812 | .pop_ret: |
- | 2813 | call fat_unlock |
|
2810 | .access_denied: |
2814 | pop eax |
2811 | push ERROR_ACCESS_DENIED |
2815 | xor ebx, ebx |
2812 | jmp .pop_ret |
2816 | ret |
2813 | @@: |
2817 | @@: |
2814 | and [longname_sec1], 0 |
2818 | and [ebp+FAT.longname_sec1], 0 |
2815 | and [longname_sec2], 0 |
2819 | and [ebp+FAT.longname_sec2], 0 |
2816 | push edi |
2820 | push edi |
2817 | call hd_find_lfn |
2821 | stdcall hd_find_lfn, [esp+4+4] |
2818 | jnc .found |
2822 | jnc .found |
2819 | pop edi |
2823 | pop edi |
Line 2826... | Line 2830... | ||
2826 | jz .access_denied2 |
2830 | jz .access_denied2 |
2827 | test byte [edi+11], 10h |
2831 | test byte [edi+11], 10h |
2828 | jz .dodel |
2832 | jz .dodel |
2829 | ; we can delete only empty folders! |
2833 | ; we can delete only empty folders! |
2830 | pushad |
2834 | pushad |
2831 | mov ebp, [edi+20-2] |
2835 | mov esi, [edi+20-2] |
2832 | mov bp, [edi+26] |
2836 | mov si, [edi+26] |
2833 | xor ecx, ecx |
2837 | xor ecx, ecx |
2834 | lea eax, [ebp-2] |
2838 | lea eax, [esi-2] |
2835 | imul eax, [SECTORS_PER_CLUSTER] |
2839 | imul eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
2836 | add eax, [DATA_START] |
2840 | add eax, [ebp+FAT.DATA_START] |
2837 | mov ebx, buffer |
2841 | lea ebx, [ebp+FAT.buffer] |
2838 | call hd_read |
2842 | call fs_read32_sys |
2839 | cmp [hd_error], 0 |
2843 | test eax, eax |
2840 | jnz .err1 |
2844 | jnz .err1 |
- | 2845 | lea eax, [ebx+0x200] |
|
2841 | add ebx, 2*0x20 |
2846 | add ebx, 2*0x20 |
2842 | .checkempty: |
2847 | .checkempty: |
2843 | cmp byte [ebx], 0 |
2848 | cmp byte [ebx], 0 |
2844 | jz .empty |
2849 | jz .empty |
2845 | cmp byte [ebx], 0xE5 |
2850 | cmp byte [ebx], 0xE5 |
2846 | jnz .notempty |
2851 | jnz .notempty |
2847 | add ebx, 0x20 |
2852 | add ebx, 0x20 |
2848 | cmp ebx, buffer+0x200 |
2853 | cmp ebx, eax |
2849 | jb .checkempty |
2854 | jb .checkempty |
2850 | inc ecx |
2855 | inc ecx |
2851 | cmp ecx, [SECTORS_PER_CLUSTER] |
2856 | cmp ecx, [ebp+FAT.SECTORS_PER_CLUSTER] |
2852 | jb @f |
2857 | jb @f |
2853 | mov eax, ebp |
2858 | mov eax, esi |
2854 | call get_FAT |
2859 | call get_FAT |
2855 | cmp [hd_error], 0 |
- | |
2856 | jnz .err1 |
2860 | jc .err1 |
2857 | mov ebp, eax |
2861 | mov esi, eax |
2858 | xor ecx, ecx |
2862 | xor ecx, ecx |
2859 | @@: |
2863 | @@: |
2860 | lea eax, [ebp-2] |
2864 | lea eax, [esi-2] |
2861 | imul eax, [SECTORS_PER_CLUSTER] |
2865 | imul eax, [ebp+FAT.SECTORS_PER_CLUSTER] |
2862 | add eax, [DATA_START] |
2866 | add eax, [ebp+FAT.DATA_START] |
2863 | add eax, ecx |
2867 | add eax, ecx |
2864 | mov ebx, buffer |
2868 | lea ebx, [ebp+FAT.buffer] |
2865 | call hd_read |
2869 | call fs_read32_sys |
- | 2870 | test eax, eax |
|
2866 | cmp [hd_error], 0 |
2871 | lea eax, [ebx+0x200] |
2867 | jz .checkempty |
2872 | jz .checkempty |
2868 | .err1: |
2873 | .err1: |
2869 | popad |
2874 | popad |
2870 | .err2: |
2875 | .err2: |
2871 | pop edi |
2876 | pop edi |
- | 2877 | call fat_unlock |
|
2872 | push 11 |
2878 | push ERROR_DEVICE |
2873 | pop eax |
2879 | pop eax |
2874 | ret |
2880 | ret |
2875 | .notempty: |
2881 | .notempty: |
2876 | popad |
2882 | popad |
2877 | .access_denied2: |
2883 | .access_denied2: |
2878 | pop edi |
2884 | pop edi |
- | 2885 | call fat_unlock |
|
2879 | push ERROR_ACCESS_DENIED |
2886 | push ERROR_ACCESS_DENIED |
2880 | pop eax |
2887 | pop eax |
2881 | ret |
2888 | ret |
2882 | .empty: |
2889 | .empty: |
2883 | popad |
2890 | popad |
2884 | push ebx |
2891 | push eax ebx |
2885 | mov ebx, buffer |
2892 | lea ebx, [ebp+FAT.buffer] |
2886 | call hd_read |
2893 | call fs_read32_sys |
2887 | pop ebx |
2894 | test eax, eax |
2888 | cmp [hd_error], 0 |
2895 | pop ebx eax |
2889 | jnz .err2 |
2896 | jnz .err2 |
2890 | .dodel: |
2897 | .dodel: |
2891 | push eax |
2898 | push eax |
2892 | mov eax, [edi+20-2] |
2899 | mov eax, [edi+20-2] |
2893 | mov ax, [edi+26] |
2900 | mov ax, [edi+26] |
2894 | xchg eax, [esp] |
2901 | xchg eax, [esp] |
2895 | ; delete folder entry |
2902 | ; delete folder entry |
2896 | mov byte [edi], 0xE5 |
2903 | mov byte [edi], 0xE5 |
2897 | ; delete LFN (if present) |
2904 | ; delete LFN (if present) |
2898 | .lfndel: |
2905 | .lfndel: |
- | 2906 | lea edx, [ebp+FAT.buffer] |
|
2899 | cmp edi, buffer |
2907 | cmp edi, edx |
2900 | ja @f |
2908 | ja @f |
2901 | cmp [longname_sec2], 0 |
2909 | cmp [ebp+FAT.longname_sec2], 0 |
2902 | jz .lfndone |
2910 | jz .lfndone |
2903 | push [longname_sec2] |
2911 | push [ebp+FAT.longname_sec2] |
2904 | push [longname_sec1] |
2912 | push [ebp+FAT.longname_sec1] |
2905 | pop [longname_sec2] |
2913 | pop [ebp+FAT.longname_sec2] |
2906 | and [longname_sec1], 0 |
2914 | and [ebp+FAT.longname_sec1], 0 |
2907 | push ebx |
2915 | push ebx |
2908 | mov ebx, buffer |
2916 | mov ebx, edx |
2909 | call hd_write |
2917 | call fs_write32_sys |
2910 | mov eax, [esp+4] |
2918 | mov eax, [esp+4] |
2911 | call hd_read |
2919 | call fs_read32_sys |
2912 | pop ebx |
2920 | pop ebx |
2913 | pop eax |
2921 | pop eax |
2914 | mov edi, buffer+0x200 |
2922 | lea edi, [ebp+FAT.buffer+0x200] |
2915 | @@: |
2923 | @@: |
2916 | sub edi, 0x20 |
2924 | sub edi, 0x20 |
2917 | cmp byte [edi], 0xE5 |
2925 | cmp byte [edi], 0xE5 |
2918 | jz .lfndone |
2926 | jz .lfndone |
2919 | cmp byte [edi+11], 0xF |
2927 | cmp byte [edi+11], 0xF |
2920 | jnz .lfndone |
2928 | jnz .lfndone |
2921 | mov byte [edi], 0xE5 |
2929 | mov byte [edi], 0xE5 |
2922 | jmp .lfndel |
2930 | jmp .lfndel |
2923 | .lfndone: |
2931 | .lfndone: |
2924 | push ebx |
2932 | push ebx |
2925 | mov ebx, buffer |
2933 | lea ebx, [ebp+FAT.buffer] |
2926 | call hd_write |
2934 | call fs_write32_sys |
2927 | pop ebx |
2935 | pop ebx |
2928 | ; delete FAT chain |
2936 | ; delete FAT chain |
2929 | pop eax |
2937 | pop eax |
2930 | call clear_cluster_chain |
2938 | call clear_cluster_chain |
2931 | call update_disk |
2939 | call update_disk |
- | 2940 | call fat_unlock |
|
2932 | pop edi |
2941 | pop edi |
2933 | xor eax, eax |
2942 | xor eax, eax |
2934 | cmp [hd_error], 0 |
- | |
2935 | jz @f |
- | |
2936 | mov al, 11 |
- | |
2937 | @@: |
- | |
2938 | ret |
2943 | ret |
Line 2939... | Line 2944... | ||
2939 | 2944 |