1 |
|
|
/**************************************************************************/ |
2 |
|
|
/* */ |
3 |
|
|
/* Copyright (c) Microsoft Corporation. All rights reserved. */ |
4 |
|
|
/* */ |
5 |
|
|
/* This software is licensed under the Microsoft Software License */ |
6 |
|
|
/* Terms for Microsoft Azure RTOS. Full text of the license can be */ |
7 |
|
|
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */ |
8 |
|
|
/* and in the root directory of this software. */ |
9 |
|
|
/* */ |
10 |
|
|
/**************************************************************************/ |
11 |
|
|
|
12 |
|
|
|
13 |
|
|
/**************************************************************************/ |
14 |
|
|
/**************************************************************************/ |
15 |
|
|
/** */ |
16 |
|
|
/** FileX Component */ |
17 |
|
|
/** */ |
18 |
|
|
/** File */ |
19 |
|
|
/** */ |
20 |
|
|
/**************************************************************************/ |
21 |
|
|
/**************************************************************************/ |
22 |
|
|
|
23 |
|
|
#define FX_SOURCE_CODE |
24 |
|
|
|
25 |
|
|
/* Include necessary system files. */ |
26 |
|
|
|
27 |
|
|
#include "fx_api.h" |
28 |
|
|
#include "fx_system.h" |
29 |
|
|
#include "fx_file.h" |
30 |
|
|
#include "fx_directory.h" |
31 |
|
|
#include "fx_utility.h" |
32 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
33 |
|
|
#include "fx_fault_tolerant.h" |
34 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
35 |
|
|
|
36 |
|
|
|
37 |
|
|
/**************************************************************************/ |
38 |
|
|
/* */ |
39 |
|
|
/* FUNCTION RELEASE */ |
40 |
|
|
/* */ |
41 |
|
|
/* _fx_file_write PORTABLE C */ |
42 |
|
|
/* 6.1 */ |
43 |
|
|
/* AUTHOR */ |
44 |
|
|
/* */ |
45 |
|
|
/* William E. Lamie, Microsoft Corporation */ |
46 |
|
|
/* */ |
47 |
|
|
/* DESCRIPTION */ |
48 |
|
|
/* */ |
49 |
|
|
/* This function writes the specified number of bytes into the file's */ |
50 |
|
|
/* data area. The status of the write operation is returned to the */ |
51 |
|
|
/* caller. In addition, various internal file pointers in the file */ |
52 |
|
|
/* control block are also updated. */ |
53 |
|
|
/* */ |
54 |
|
|
/* INPUT */ |
55 |
|
|
/* */ |
56 |
|
|
/* file_ptr File control block pointer */ |
57 |
|
|
/* buffer_ptr Buffer pointer */ |
58 |
|
|
/* size Number of bytes to write */ |
59 |
|
|
/* */ |
60 |
|
|
/* OUTPUT */ |
61 |
|
|
/* */ |
62 |
|
|
/* return status */ |
63 |
|
|
/* */ |
64 |
|
|
/* CALLS */ |
65 |
|
|
/* */ |
66 |
|
|
/* _fx_directory_entry_write Update the file's size */ |
67 |
|
|
/* _fx_utility_exFAT_bitmap_flush Flush exFAT allocation bitmap */ |
68 |
|
|
/* _fx_utility_exFAT_bitmap_free_cluster_find */ |
69 |
|
|
/* Find exFAT free cluster */ |
70 |
|
|
/* _fx_utility_exFAT_cluster_state_get Get cluster state */ |
71 |
|
|
/* _fx_utility_exFAT_cluster_state_set Set cluster state */ |
72 |
|
|
/* _fx_utility_FAT_entry_read Read a FAT entry */ |
73 |
|
|
/* _fx_utility_FAT_entry_write Write a FAT entry */ |
74 |
|
|
/* _fx_utility_FAT_flush Flush written FAT entries */ |
75 |
|
|
/* _fx_utility_logical_sector_flush Flush written logical sectors */ |
76 |
|
|
/* _fx_utility_logical_sector_read Read a logical sector */ |
77 |
|
|
/* _fx_utility_logical_sector_write Write a logical sector */ |
78 |
|
|
/* _fx_utility_memory_copy Fast memory copy routine */ |
79 |
|
|
/* _fx_fault_tolerant_transaction_start Start fault tolerant */ |
80 |
|
|
/* transaction */ |
81 |
|
|
/* _fx_fault_tolerant_transaction_end End fault tolerant transaction*/ |
82 |
|
|
/* _fx_fault_tolerant_recover Recover FAT chain */ |
83 |
|
|
/* _fx_fault_tolerant_reset_log_file Reset the log file */ |
84 |
|
|
/* _fx_fault_tolerant_set_FAT_chain Set data of FAT chain */ |
85 |
|
|
/* */ |
86 |
|
|
/* CALLED BY */ |
87 |
|
|
/* */ |
88 |
|
|
/* Application Code */ |
89 |
|
|
/* */ |
90 |
|
|
/* RELEASE HISTORY */ |
91 |
|
|
/* */ |
92 |
|
|
/* DATE NAME DESCRIPTION */ |
93 |
|
|
/* */ |
94 |
|
|
/* 05-19-2020 William E. Lamie Initial Version 6.0 */ |
95 |
|
|
/* 09-30-2020 William E. Lamie Modified comment(s), verified */ |
96 |
|
|
/* memcpy usage, */ |
97 |
|
|
/* resulting in version 6.1 */ |
98 |
|
|
/* */ |
99 |
|
|
/**************************************************************************/ |
100 |
|
599766 |
UINT _fx_file_write(FX_FILE *file_ptr, VOID *buffer_ptr, ULONG size) |
101 |
|
|
{ |
102 |
|
|
|
103 |
|
|
UINT status; |
104 |
|
|
ULONG64 bytes_remaining; |
105 |
|
|
ULONG i; |
106 |
|
|
ULONG copy_bytes; |
107 |
|
|
ULONG bytes_per_cluster; |
108 |
|
|
UCHAR *source_ptr; |
109 |
|
|
ULONG first_new_cluster; |
110 |
|
|
ULONG last_cluster; |
111 |
|
|
ULONG cluster, next_cluster; |
112 |
|
|
ULONG FAT_index; |
113 |
|
|
ULONG FAT_value; |
114 |
|
|
ULONG clusters; |
115 |
|
|
ULONG total_clusters; |
116 |
|
|
UINT sectors; |
117 |
|
|
FX_MEDIA *media_ptr; |
118 |
|
|
|
119 |
|
|
#ifdef FX_ENABLE_EXFAT |
120 |
|
|
UCHAR cluster_state; |
121 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
122 |
|
|
|
123 |
|
|
#ifdef FX_FAULT_TOLERANT_DATA |
124 |
|
|
FX_INT_SAVE_AREA |
125 |
|
|
#endif |
126 |
|
|
|
127 |
|
|
#ifndef FX_DONT_UPDATE_OPEN_FILES |
128 |
|
|
ULONG open_count; |
129 |
|
|
FX_FILE *search_ptr; |
130 |
|
|
#endif |
131 |
|
|
|
132 |
|
|
#ifdef TX_ENABLE_EVENT_TRACE |
133 |
|
|
TX_TRACE_BUFFER_ENTRY *trace_event; |
134 |
|
|
ULONG trace_timestamp; |
135 |
|
|
#endif |
136 |
|
|
|
137 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
138 |
|
|
UCHAR data_append = FX_FALSE; /* Whether or not new data would extend beyond the size of the original file. |
139 |
|
|
Operations such as append or overwrite could cause the new file to exceed its |
140 |
|
|
original size, resulting in data-appending operation. */ |
141 |
|
|
ULONG copy_head_cluster = 0; /* The first cluster of the original chain that needs to be replaced. */ |
142 |
|
|
ULONG copy_tail_cluster = 0; /* The last cluster of the original chain that needs to be replaced. */ |
143 |
|
|
ULONG insertion_back; /* The insertion point (back) */ |
144 |
|
|
ULONG insertion_front = 0; /* The insertion point (front) */ |
145 |
|
|
ULONG replace_clusters = 0; /* The number of clusters to be replaced. */ |
146 |
|
|
UCHAR dont_use_fat_old = FX_FALSE; /* Used by exFAT logic to indicate whether or not the FAT table should be used. */ |
147 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
148 |
|
|
|
149 |
|
|
|
150 |
|
|
/* First, determine if the file is still open. */ |
151 |
✓✓ |
599766 |
if (file_ptr -> fx_file_id != FX_FILE_ID) |
152 |
|
|
{ |
153 |
|
|
|
154 |
|
|
/* Return the file not open error status. */ |
155 |
|
1 |
return(FX_NOT_OPEN); |
156 |
|
|
} |
157 |
|
|
|
158 |
|
|
/* Setup pointer to media structure. */ |
159 |
|
599765 |
media_ptr = file_ptr -> fx_file_media_ptr; |
160 |
|
|
|
161 |
|
|
#ifndef FX_MEDIA_STATISTICS_DISABLE |
162 |
|
|
|
163 |
|
|
/* Increment the number of times this service has been called. */ |
164 |
|
599765 |
media_ptr -> fx_media_file_writes++; |
165 |
|
|
#endif |
166 |
|
|
|
167 |
|
|
|
168 |
|
|
#ifdef FX_ENABLE_EXFAT |
169 |
|
|
if ((media_ptr -> fx_media_FAT_type != FX_exFAT) && |
170 |
|
|
(file_ptr -> fx_file_current_file_offset + size > 0xFFFFFFFFULL)) |
171 |
|
|
#else |
172 |
✓✓ |
599765 |
if (file_ptr -> fx_file_current_file_offset + size > 0xFFFFFFFFULL) |
173 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
174 |
|
|
{ |
175 |
|
|
|
176 |
|
|
/* Return the no more space error, since the new file size would be larger than |
177 |
|
|
the 32-bit field to represent it in the file's directory entry. */ |
178 |
|
1 |
return(FX_NO_MORE_SPACE); |
179 |
|
|
} |
180 |
|
|
|
181 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
182 |
|
|
/* Initialize next cluster of tail. */ |
183 |
|
|
insertion_back = media_ptr -> fx_media_fat_last; |
184 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
185 |
|
|
|
186 |
|
|
/* If trace is enabled, insert this event into the trace buffer. */ |
187 |
|
|
FX_TRACE_IN_LINE_INSERT(FX_TRACE_FILE_WRITE, file_ptr, buffer_ptr, size, 0, FX_TRACE_FILE_EVENTS, &trace_event, &trace_timestamp) |
188 |
|
|
|
189 |
|
|
/* Protect against other threads accessing the media. */ |
190 |
|
599764 |
FX_PROTECT |
191 |
|
|
|
192 |
|
|
/* Check for write protect at the media level (set by driver). */ |
193 |
✓✓ |
599764 |
if (media_ptr -> fx_media_driver_write_protect) |
194 |
|
|
{ |
195 |
|
|
|
196 |
|
|
/* Release media protection. */ |
197 |
|
1 |
FX_UNPROTECT |
198 |
|
|
|
199 |
|
|
/* Return write protect error. */ |
200 |
|
1 |
return(FX_WRITE_PROTECT); |
201 |
|
|
} |
202 |
|
|
|
203 |
|
|
/* Make sure this file is open for writing. */ |
204 |
✓✓ |
599763 |
if (file_ptr -> fx_file_open_mode != FX_OPEN_FOR_WRITE) |
205 |
|
|
{ |
206 |
|
|
|
207 |
|
|
/* Release media protection. */ |
208 |
|
1 |
FX_UNPROTECT |
209 |
|
|
|
210 |
|
|
/* Return the access error exception - a write was attempted from |
211 |
|
|
a file opened for reading! */ |
212 |
|
1 |
return(FX_ACCESS_ERROR); |
213 |
|
|
} |
214 |
|
|
|
215 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
216 |
|
|
|
217 |
|
|
/* Start transaction. */ |
218 |
|
|
_fx_fault_tolerant_transaction_start(media_ptr); |
219 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
220 |
|
|
|
221 |
|
|
/* Calculate the number of bytes per cluster. */ |
222 |
|
599762 |
bytes_per_cluster = ((ULONG)media_ptr -> fx_media_bytes_per_sector) * |
223 |
|
599762 |
((ULONG)media_ptr -> fx_media_sectors_per_cluster); |
224 |
|
|
|
225 |
|
|
/* Check for invalid value. */ |
226 |
✓✓ |
599762 |
if (bytes_per_cluster == 0) |
227 |
|
|
{ |
228 |
|
|
|
229 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
230 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
231 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
232 |
|
|
|
233 |
|
|
/* Release media protection. */ |
234 |
|
1 |
FX_UNPROTECT |
235 |
|
|
|
236 |
|
|
/* Invalid media, return error. */ |
237 |
|
1 |
return(FX_MEDIA_INVALID); |
238 |
|
|
} |
239 |
|
|
|
240 |
|
|
/* Initialized first new cluster. */ |
241 |
|
599761 |
first_new_cluster = 0; |
242 |
|
|
|
243 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
244 |
|
|
/* Calculate clusters need to be replaced when fault tolerant is enabled. */ |
245 |
|
|
if (media_ptr -> fx_media_fault_tolerant_enabled) |
246 |
|
|
{ |
247 |
|
|
|
248 |
|
|
if (file_ptr -> fx_file_current_file_offset == file_ptr -> fx_file_current_file_size) |
249 |
|
|
{ |
250 |
|
|
|
251 |
|
|
/* Appending data. No need to replace existing clusters. */ |
252 |
|
|
replace_clusters = 0; |
253 |
|
|
} |
254 |
|
|
else if (file_ptr -> fx_file_current_file_offset == file_ptr -> fx_file_maximum_size_used) |
255 |
|
|
{ |
256 |
|
|
|
257 |
|
|
/* Similar to append data. No actual data after fx_file_maximum_size_used. |
258 |
|
|
* No need to replace existing clusters. */ |
259 |
|
|
replace_clusters = 0; |
260 |
|
|
} |
261 |
|
|
else if (((file_ptr -> fx_file_current_file_offset / media_ptr -> fx_media_bytes_per_sector) == |
262 |
|
|
((file_ptr -> fx_file_current_file_offset + size - 1) / media_ptr -> fx_media_bytes_per_sector)) && |
263 |
|
|
((file_ptr -> fx_file_current_file_offset + size) <= file_ptr -> fx_file_current_file_size)) |
264 |
|
|
{ |
265 |
|
|
|
266 |
|
|
/* Overwriting data in one sector. No need to replace existing clusters. */ |
267 |
|
|
replace_clusters = 0; |
268 |
|
|
} |
269 |
|
|
else if ((file_ptr -> fx_file_current_available_size - file_ptr -> fx_file_current_file_offset) < size) |
270 |
|
|
{ |
271 |
|
|
|
272 |
|
|
/* Replace all clusters from current_cluster. */ |
273 |
|
|
replace_clusters = (UINT)(file_ptr -> fx_file_total_clusters - file_ptr -> fx_file_current_relative_cluster); |
274 |
|
|
copy_head_cluster = file_ptr -> fx_file_current_physical_cluster; |
275 |
|
|
|
276 |
|
|
data_append = FX_TRUE; |
277 |
|
|
} |
278 |
|
|
else |
279 |
|
|
{ |
280 |
|
|
|
281 |
|
|
/* Replace clusters from current_cluster to the end of written cluster. */ |
282 |
|
|
replace_clusters = (UINT)((file_ptr -> fx_file_current_file_offset + size + bytes_per_cluster - 1) / bytes_per_cluster - |
283 |
|
|
file_ptr -> fx_file_current_relative_cluster); |
284 |
|
|
copy_head_cluster = file_ptr -> fx_file_current_physical_cluster; |
285 |
|
|
data_append = FX_FALSE; |
286 |
|
|
} |
287 |
|
|
} |
288 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
289 |
|
|
|
290 |
|
|
/* Next, determine if there is enough room to write the specified number of |
291 |
|
|
bytes to the clusters already allocated to this file. */ |
292 |
✓✓ |
599761 |
if (((file_ptr -> fx_file_current_available_size - file_ptr -> fx_file_current_file_offset) < size) |
293 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
294 |
|
|
|| (replace_clusters) |
295 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
296 |
|
|
) |
297 |
|
|
{ |
298 |
|
|
|
299 |
|
|
/* The new request will not fit within the currently allocated clusters. */ |
300 |
|
|
|
301 |
|
|
/* Calculate the number of additional clusters that must be allocated for this |
302 |
|
|
write request. */ |
303 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
304 |
|
|
/* Find the number of clusters that need to be replaced. */ |
305 |
|
|
if (media_ptr -> fx_media_fault_tolerant_enabled) |
306 |
|
|
{ |
307 |
|
|
|
308 |
|
|
/* Mark the recovery phase. */ |
309 |
|
|
media_ptr -> fx_media_fault_tolerant_state |= FX_FAULT_TOLERANT_STATE_SET_FAT_CHAIN; |
310 |
|
|
|
311 |
|
|
bytes_remaining = file_ptr -> fx_file_current_file_offset + size; |
312 |
|
|
|
313 |
|
|
if (replace_clusters > 0) |
314 |
|
|
{ |
315 |
|
|
|
316 |
|
|
#ifdef FX_ENABLE_EXFAT |
317 |
|
|
if ((media_ptr -> fx_media_FAT_type == FX_exFAT) && (file_ptr -> fx_file_dir_entry.fx_dir_entry_dont_use_fat & 1)) |
318 |
|
|
{ |
319 |
|
|
/* Find the insertion points in the exFAT with bitmap case.. this is a simple case.. */ |
320 |
|
|
/* The previous cluster is not initialized. Find it. */ |
321 |
|
|
if (copy_head_cluster != file_ptr -> fx_file_first_physical_cluster) |
322 |
|
|
{ |
323 |
|
|
insertion_front = copy_head_cluster - 1; |
324 |
|
|
} |
325 |
|
|
|
326 |
|
|
/* Find copy tail cluster. */ |
327 |
|
|
if (data_append == FX_FALSE) |
328 |
|
|
{ |
329 |
|
|
copy_tail_cluster = file_ptr -> fx_file_first_physical_cluster + (ULONG)((bytes_remaining - 1) / bytes_per_cluster); |
330 |
|
|
if (copy_tail_cluster != file_ptr -> fx_file_last_physical_cluster) |
331 |
|
|
{ |
332 |
|
|
insertion_back = copy_tail_cluster + 1; |
333 |
|
|
} |
334 |
|
|
} |
335 |
|
|
} |
336 |
|
|
else |
337 |
|
|
{ |
338 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
339 |
|
|
|
340 |
|
|
/* Find previous cluster of copy head cluster. */ |
341 |
|
|
/* The previous cluster is not initialized. Find it. */ |
342 |
|
|
if (copy_head_cluster != file_ptr -> fx_file_first_physical_cluster) |
343 |
|
|
{ |
344 |
|
|
|
345 |
|
|
/* The copy head cluster is not the first cluster of file. */ |
346 |
|
|
/* Copy head is not the first cluster of file. */ |
347 |
|
|
if (file_ptr -> fx_file_current_relative_cluster < file_ptr -> fx_file_consecutive_cluster) |
348 |
|
|
{ |
349 |
|
|
|
350 |
|
|
/* Clusters before current cluster are consecutive. */ |
351 |
|
|
insertion_front = copy_head_cluster - 1; |
352 |
|
|
bytes_remaining -= file_ptr -> fx_file_current_relative_cluster * bytes_per_cluster; |
353 |
|
|
} |
354 |
|
|
else |
355 |
|
|
{ |
356 |
|
|
|
357 |
|
|
/* Skip consecutive clusters first. */ |
358 |
|
|
cluster = file_ptr -> fx_file_first_physical_cluster; |
359 |
|
|
|
360 |
|
|
/* Loop the link of FAT to find the previous cluster. */ |
361 |
|
|
while ((cluster >= FX_FAT_ENTRY_START) && (cluster < media_ptr -> fx_media_fat_reserved)) |
362 |
|
|
{ |
363 |
|
|
|
364 |
|
|
/* Reduce remaining bytes. */ |
365 |
|
|
bytes_remaining -= bytes_per_cluster; |
366 |
|
|
|
367 |
|
|
/* Read the current cluster entry from the FAT. */ |
368 |
|
|
status = _fx_utility_FAT_entry_read(media_ptr, cluster, &FAT_value); |
369 |
|
|
|
370 |
|
|
/* Check the return value. */ |
371 |
|
|
if (status != FX_SUCCESS) |
372 |
|
|
{ |
373 |
|
|
|
374 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
375 |
|
|
|
376 |
|
|
/* Release media protection. */ |
377 |
|
|
FX_UNPROTECT |
378 |
|
|
|
379 |
|
|
/* Return the error status. */ |
380 |
|
|
return(status); |
381 |
|
|
} |
382 |
|
|
|
383 |
|
|
if (FAT_value == copy_head_cluster) |
384 |
|
|
{ |
385 |
|
|
break; |
386 |
|
|
} |
387 |
|
|
|
388 |
|
|
/* Move to next cluster. */ |
389 |
|
|
cluster = FAT_value; |
390 |
|
|
} |
391 |
|
|
|
392 |
|
|
if ((cluster >= FX_FAT_ENTRY_START) && (cluster < media_ptr -> fx_media_fat_reserved)) |
393 |
|
|
{ |
394 |
|
|
|
395 |
|
|
/* Find the previous cluster. */ |
396 |
|
|
insertion_front = cluster; |
397 |
|
|
} |
398 |
|
|
else |
399 |
|
|
{ |
400 |
|
|
|
401 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
402 |
|
|
|
403 |
|
|
/* Release media protection. */ |
404 |
|
|
FX_UNPROTECT |
405 |
|
|
|
406 |
|
|
/* Return the error status. */ |
407 |
|
|
return(FX_NOT_FOUND); |
408 |
|
|
} |
409 |
|
|
} |
410 |
|
|
} |
411 |
|
|
|
412 |
|
|
/* Find copy tail cluster. */ |
413 |
|
|
if (bytes_remaining <= bytes_per_cluster) |
414 |
|
|
{ |
415 |
|
|
|
416 |
|
|
/* Only one cluster is modified. */ |
417 |
|
|
copy_tail_cluster = copy_head_cluster; |
418 |
|
|
} |
419 |
|
|
else if (data_append == FX_FALSE) |
420 |
|
|
{ |
421 |
|
|
|
422 |
|
|
/* Search from copy head cluster. */ |
423 |
|
|
cluster = copy_head_cluster; |
424 |
|
|
FAT_value = FX_FAT_ENTRY_START; |
425 |
|
|
|
426 |
|
|
/* Loop the link of FAT to find the previous cluster. */ |
427 |
|
|
while ((cluster >= FX_FAT_ENTRY_START) && (cluster < media_ptr -> fx_media_fat_reserved)) |
428 |
|
|
{ |
429 |
|
|
|
430 |
|
|
if (bytes_remaining <= bytes_per_cluster) |
431 |
|
|
{ |
432 |
|
|
break; |
433 |
|
|
} |
434 |
|
|
|
435 |
|
|
/* Reduce remaining bytes. */ |
436 |
|
|
bytes_remaining -= bytes_per_cluster; |
437 |
|
|
|
438 |
|
|
/* Read the current cluster entry from the FAT. */ |
439 |
|
|
status = _fx_utility_FAT_entry_read(media_ptr, cluster, &FAT_value); |
440 |
|
|
|
441 |
|
|
/* Check the return value. */ |
442 |
|
|
if (status != FX_SUCCESS) |
443 |
|
|
{ |
444 |
|
|
|
445 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
446 |
|
|
|
447 |
|
|
/* Release media protection. */ |
448 |
|
|
FX_UNPROTECT |
449 |
|
|
|
450 |
|
|
/* Return the error status. */ |
451 |
|
|
return(status); |
452 |
|
|
} |
453 |
|
|
|
454 |
|
|
/* Move to next cluster. */ |
455 |
|
|
cluster = FAT_value; |
456 |
|
|
} |
457 |
|
|
|
458 |
|
|
/* Find the previous cluster. */ |
459 |
|
|
copy_tail_cluster = FAT_value; |
460 |
|
|
} |
461 |
|
|
|
462 |
|
|
/* Get the cluster next to copy tail. */ |
463 |
|
|
if (data_append == FX_FALSE) |
464 |
|
|
{ |
465 |
|
|
|
466 |
|
|
/* Read FAT entry. */ |
467 |
|
|
status = _fx_utility_FAT_entry_read(media_ptr, copy_tail_cluster, &insertion_back); |
468 |
|
|
|
469 |
|
|
/* Check for a bad status. */ |
470 |
|
|
if (status != FX_SUCCESS) |
471 |
|
|
{ |
472 |
|
|
|
473 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
474 |
|
|
|
475 |
|
|
/* Release media protection. */ |
476 |
|
|
FX_UNPROTECT |
477 |
|
|
|
478 |
|
|
/* Return the bad status. */ |
479 |
|
|
return(status); |
480 |
|
|
} |
481 |
|
|
} |
482 |
|
|
else |
483 |
|
|
{ |
484 |
|
|
insertion_back = media_ptr -> fx_media_fat_last; |
485 |
|
|
} |
486 |
|
|
#ifdef FX_ENABLE_EXFAT |
487 |
|
|
} |
488 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
489 |
|
|
} |
490 |
|
|
else |
491 |
|
|
{ |
492 |
|
|
insertion_back = media_ptr -> fx_media_fat_last; |
493 |
|
|
} |
494 |
|
|
} |
495 |
|
|
|
496 |
|
|
if (file_ptr -> fx_file_current_available_size - file_ptr -> fx_file_current_file_offset < size) |
497 |
|
|
{ |
498 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
499 |
|
|
/* Calculate clusters that are needed for data append except ones overwritten. */ |
500 |
|
59282 |
clusters = (UINT)((size + (bytes_per_cluster - 1) - |
501 |
|
59282 |
(file_ptr -> fx_file_current_available_size - file_ptr -> fx_file_current_file_offset)) / |
502 |
|
|
bytes_per_cluster); |
503 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
504 |
|
|
} |
505 |
|
|
else |
506 |
|
|
{ |
507 |
|
|
clusters = 0; |
508 |
|
|
} |
509 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
510 |
|
|
|
511 |
|
|
/* Determine if we have enough space left. */ |
512 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
513 |
|
|
if (clusters + replace_clusters > media_ptr -> fx_media_available_clusters) |
514 |
|
|
#else |
515 |
✓✓ |
59282 |
if (clusters > media_ptr -> fx_media_available_clusters) |
516 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
517 |
|
|
{ |
518 |
|
|
|
519 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
520 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
521 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
522 |
|
|
|
523 |
|
|
/* Release media protection. */ |
524 |
|
2 |
FX_UNPROTECT |
525 |
|
|
|
526 |
|
|
/* Out of disk space. */ |
527 |
|
2 |
return(FX_NO_MORE_SPACE); |
528 |
|
|
} |
529 |
|
|
|
530 |
|
|
/* Update the file total cluster count. */ |
531 |
|
59280 |
file_ptr -> fx_file_total_clusters = file_ptr -> fx_file_total_clusters + clusters; |
532 |
|
|
|
533 |
|
|
/* Check for wrap-around when updating the available size. */ |
534 |
|
|
#ifdef FX_ENABLE_EXFAT |
535 |
|
|
if ((media_ptr -> fx_media_FAT_type != FX_exFAT) && |
536 |
|
|
(file_ptr -> fx_file_current_available_size + (ULONG64)bytes_per_cluster * (ULONG64)clusters > 0xFFFFFFFFULL)) |
537 |
|
|
#else |
538 |
✓✓ |
59280 |
if (file_ptr -> fx_file_current_available_size + (ULONG64)bytes_per_cluster * (ULONG64)clusters > 0xFFFFFFFFULL) |
539 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
540 |
|
|
{ |
541 |
|
|
|
542 |
|
|
/* 32-bit wrap around condition is present. Just set the available file size to all ones, which is |
543 |
|
|
the maximum file size. */ |
544 |
|
1 |
file_ptr -> fx_file_current_available_size = 0xFFFFFFFFULL; |
545 |
|
|
} |
546 |
|
|
else |
547 |
|
|
{ |
548 |
|
|
|
549 |
|
|
/* Normal condition, update the available size. */ |
550 |
|
59279 |
file_ptr -> fx_file_current_available_size = |
551 |
|
59279 |
file_ptr -> fx_file_current_available_size + (ULONG64)bytes_per_cluster * (ULONG64)clusters; |
552 |
|
|
} |
553 |
|
|
|
554 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
555 |
|
|
/* Account for newly allocated clusters. */ |
556 |
|
|
clusters += replace_clusters; |
557 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
558 |
|
|
|
559 |
|
|
/* Decrease the available clusters in the media control block. */ |
560 |
|
59280 |
media_ptr -> fx_media_available_clusters = media_ptr -> fx_media_available_clusters - clusters; |
561 |
|
|
|
562 |
|
|
#if defined(FX_ENABLE_EXFAT) && defined(FX_ENABLE_FAULT_TOLERANT) |
563 |
|
|
/* Get dont_use_fat value. */ |
564 |
|
|
if (media_ptr -> fx_media_FAT_type == FX_exFAT) |
565 |
|
|
{ |
566 |
|
|
dont_use_fat_old = (UCHAR)file_ptr -> fx_file_dir_entry.fx_dir_entry_dont_use_fat; |
567 |
|
|
} |
568 |
|
|
#endif /* FX_ENABLE_EXFAT && FX_ENABLE_FAULT_TOLERANT */ |
569 |
|
|
|
570 |
|
|
/* Search for the additional clusters we need. */ |
571 |
|
59280 |
total_clusters = media_ptr -> fx_media_total_clusters; |
572 |
|
|
|
573 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
574 |
|
|
if (replace_clusters > 0) |
575 |
|
|
{ |
576 |
|
|
|
577 |
|
|
/* Reset consecutive cluster. */ |
578 |
|
|
file_ptr -> fx_file_consecutive_cluster = 1; |
579 |
|
|
|
580 |
|
|
last_cluster = insertion_front; |
581 |
|
|
|
582 |
|
|
#ifdef FX_ENABLE_EXFAT |
583 |
|
|
if ((file_ptr -> fx_file_dir_entry.fx_dir_entry_dont_use_fat & 1) && |
584 |
|
|
(file_ptr -> fx_file_total_clusters > replace_clusters)) |
585 |
|
|
{ |
586 |
|
|
|
587 |
|
|
/* Now we should use FAT. */ |
588 |
|
|
file_ptr -> fx_file_dir_entry.fx_dir_entry_dont_use_fat &= (CHAR)0xfe; /* Clear bit 0. */ |
589 |
|
|
|
590 |
|
|
/* Build FAT chain. */ |
591 |
|
|
for (i = file_ptr -> fx_file_dir_entry.fx_dir_entry_cluster; i < file_ptr -> fx_file_last_physical_cluster; ++i) |
592 |
|
|
{ |
593 |
|
|
|
594 |
|
|
status = _fx_utility_FAT_entry_write(media_ptr, i, i + 1); |
595 |
|
|
|
596 |
|
|
if (status != FX_SUCCESS) |
597 |
|
|
{ |
598 |
|
|
|
599 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
600 |
|
|
|
601 |
|
|
/* Release media protection. */ |
602 |
|
|
FX_UNPROTECT |
603 |
|
|
|
604 |
|
|
/* Return the bad status. */ |
605 |
|
|
return(status); |
606 |
|
|
} |
607 |
|
|
} |
608 |
|
|
|
609 |
|
|
/* Write the last cluster FAT entry. */ |
610 |
|
|
status = _fx_utility_FAT_entry_write(media_ptr, i, FX_LAST_CLUSTER_exFAT); |
611 |
|
|
if (status != FX_SUCCESS) |
612 |
|
|
{ |
613 |
|
|
|
614 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
615 |
|
|
|
616 |
|
|
/* Release media protection. */ |
617 |
|
|
FX_UNPROTECT |
618 |
|
|
|
619 |
|
|
/* Return the bad status. */ |
620 |
|
|
return(status); |
621 |
|
|
} |
622 |
|
|
} |
623 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
624 |
|
|
} |
625 |
|
|
else |
626 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
627 |
|
|
{ |
628 |
|
59280 |
last_cluster = file_ptr -> fx_file_last_physical_cluster; |
629 |
|
|
} |
630 |
|
|
|
631 |
|
59280 |
FAT_index = media_ptr -> fx_media_cluster_search_start; |
632 |
|
|
|
633 |
|
|
/* Loop to find the needed clusters. */ |
634 |
✓✓ |
122137 |
while (clusters) |
635 |
|
|
{ |
636 |
|
|
|
637 |
|
|
/* Decrease the cluster count. */ |
638 |
|
65756 |
clusters--; |
639 |
|
|
#ifdef FX_ENABLE_EXFAT |
640 |
|
|
if (media_ptr -> fx_media_FAT_type == FX_exFAT) |
641 |
|
|
{ |
642 |
|
|
|
643 |
|
|
/* Find a free cluster. */ |
644 |
|
|
if (file_ptr -> fx_file_dir_entry.fx_dir_entry_dont_use_fat & 1) |
645 |
|
|
{ |
646 |
|
|
|
647 |
|
|
if (last_cluster) |
648 |
|
|
{ |
649 |
|
|
|
650 |
|
|
cluster_state = FX_EXFAT_BITMAP_CLUSTER_OCCUPIED; |
651 |
|
|
FAT_index = last_cluster + 1; |
652 |
|
|
|
653 |
|
|
if (FAT_index < media_ptr -> fx_media_total_clusters + FX_FAT_ENTRY_START) |
654 |
|
|
{ |
655 |
|
|
|
656 |
|
|
/* Get the state of the cluster. */ |
657 |
|
|
status = _fx_utility_exFAT_cluster_state_get(media_ptr, FAT_index, &cluster_state); |
658 |
|
|
|
659 |
|
|
if (status != FX_SUCCESS) |
660 |
|
|
{ |
661 |
|
|
|
662 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
663 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
664 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
665 |
|
|
|
666 |
|
|
/* Release media protection. */ |
667 |
|
|
FX_UNPROTECT |
668 |
|
|
|
669 |
|
|
/* Return the bad status. */ |
670 |
|
|
return(status); |
671 |
|
|
} |
672 |
|
|
} |
673 |
|
|
|
674 |
|
|
/* Check if we still can do not use FAT. */ |
675 |
|
|
if (cluster_state == FX_EXFAT_BITMAP_CLUSTER_FREE) |
676 |
|
|
{ |
677 |
|
|
|
678 |
|
|
/* Clusters are still consecutive. */ |
679 |
|
|
file_ptr -> fx_file_consecutive_cluster++; |
680 |
|
|
} |
681 |
|
|
else |
682 |
|
|
{ |
683 |
|
|
|
684 |
|
|
/* Now we should use FAT. */ |
685 |
|
|
file_ptr -> fx_file_dir_entry.fx_dir_entry_dont_use_fat &= (CHAR)0xfe; /* Clear bit 0. */ |
686 |
|
|
|
687 |
|
|
/* Build FAT chain. */ |
688 |
|
|
for (i = file_ptr -> fx_file_dir_entry.fx_dir_entry_cluster; i < last_cluster; ++i) |
689 |
|
|
{ |
690 |
|
|
|
691 |
|
|
status = _fx_utility_FAT_entry_write(media_ptr, i, i + 1); |
692 |
|
|
|
693 |
|
|
if (status != FX_SUCCESS) |
694 |
|
|
{ |
695 |
|
|
|
696 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
697 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
698 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
699 |
|
|
|
700 |
|
|
/* Release media protection. */ |
701 |
|
|
FX_UNPROTECT |
702 |
|
|
|
703 |
|
|
/* Return the bad status. */ |
704 |
|
|
return(status); |
705 |
|
|
} |
706 |
|
|
} |
707 |
|
|
|
708 |
|
|
/* Write the last cluster FAT entry. */ |
709 |
|
|
status = _fx_utility_FAT_entry_write(media_ptr, last_cluster, FX_LAST_CLUSTER_exFAT); |
710 |
|
|
if (status != FX_SUCCESS) |
711 |
|
|
{ |
712 |
|
|
|
713 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
714 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
715 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
716 |
|
|
|
717 |
|
|
/* Release media protection. */ |
718 |
|
|
FX_UNPROTECT |
719 |
|
|
|
720 |
|
|
/* Return the bad status. */ |
721 |
|
|
return(status); |
722 |
|
|
} |
723 |
|
|
|
724 |
|
|
/* Find free cluster from exFAT media. */ |
725 |
|
|
status = _fx_utility_exFAT_bitmap_free_cluster_find(media_ptr, |
726 |
|
|
media_ptr -> fx_media_cluster_search_start, |
727 |
|
|
&FAT_index); |
728 |
|
|
} |
729 |
|
|
} |
730 |
|
|
else |
731 |
|
|
{ |
732 |
|
|
|
733 |
|
|
/* Find the first cluster for file. */ |
734 |
|
|
status = _fx_utility_exFAT_bitmap_free_cluster_find(media_ptr, |
735 |
|
|
media_ptr -> fx_media_cluster_search_start, |
736 |
|
|
&FAT_index); |
737 |
|
|
} |
738 |
|
|
} |
739 |
|
|
else |
740 |
|
|
{ |
741 |
|
|
|
742 |
|
|
/* Find free cluster from exFAT media. */ |
743 |
|
|
status = _fx_utility_exFAT_bitmap_free_cluster_find(media_ptr, |
744 |
|
|
media_ptr -> fx_media_cluster_search_start, |
745 |
|
|
&FAT_index); |
746 |
|
|
} |
747 |
|
|
|
748 |
|
|
if (status != FX_SUCCESS) |
749 |
|
|
{ |
750 |
|
|
|
751 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
752 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
753 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
754 |
|
|
|
755 |
|
|
/* Release media protection. */ |
756 |
|
|
FX_UNPROTECT |
757 |
|
|
|
758 |
|
|
/* Return the bad status. */ |
759 |
|
|
return(status); |
760 |
|
|
} |
761 |
|
|
} |
762 |
|
|
else |
763 |
|
|
{ |
764 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
765 |
|
|
|
766 |
|
|
/* Loop to find the first available cluster. */ |
767 |
|
|
do |
768 |
|
|
{ |
769 |
|
|
|
770 |
|
|
/* Make sure we stop looking after one pass through the FAT table. */ |
771 |
✓✓ |
68736 |
if (!total_clusters) |
772 |
|
|
{ |
773 |
|
|
|
774 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
775 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
776 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
777 |
|
|
|
778 |
|
|
/* Release media protection. */ |
779 |
|
1 |
FX_UNPROTECT |
780 |
|
|
|
781 |
|
|
/* Something is wrong with the media - the desired clusters were |
782 |
|
|
not found in the FAT table. */ |
783 |
|
1 |
return(FX_NO_MORE_SPACE); |
784 |
|
|
} |
785 |
|
|
|
786 |
|
|
/* Read FAT entry. */ |
787 |
|
68735 |
status = _fx_utility_FAT_entry_read(media_ptr, FAT_index, &FAT_value); |
788 |
|
|
|
789 |
|
|
/* Check for a bad status. */ |
790 |
✓✓ |
68735 |
if (status != FX_SUCCESS) |
791 |
|
|
{ |
792 |
|
|
|
793 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
794 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
795 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
796 |
|
|
|
797 |
|
|
/* Release media protection. */ |
798 |
|
2897 |
FX_UNPROTECT |
799 |
|
|
|
800 |
|
|
/* Return the bad status. */ |
801 |
|
2897 |
return(status); |
802 |
|
|
} |
803 |
|
|
|
804 |
|
|
/* Decrement the total cluster count. */ |
805 |
|
65838 |
total_clusters--; |
806 |
|
|
|
807 |
|
|
/* Determine if the FAT entry is free. */ |
808 |
✓✓ |
65838 |
if (FAT_value == FX_FREE_CLUSTER) |
809 |
|
|
{ |
810 |
|
|
|
811 |
|
|
/* Move cluster search pointer forward. */ |
812 |
|
62858 |
media_ptr -> fx_media_cluster_search_start = FAT_index + 1; |
813 |
|
|
|
814 |
|
|
/* Determine if this needs to be wrapped. */ |
815 |
✓✓ |
62858 |
if (media_ptr -> fx_media_cluster_search_start >= (media_ptr -> fx_media_total_clusters + FX_FAT_ENTRY_START)) |
816 |
|
|
{ |
817 |
|
|
|
818 |
|
|
/* Wrap the search to the beginning FAT entry. */ |
819 |
|
17 |
media_ptr -> fx_media_cluster_search_start = FX_FAT_ENTRY_START; |
820 |
|
|
} |
821 |
|
|
|
822 |
|
|
/* Break this loop. */ |
823 |
|
62858 |
break; |
824 |
|
|
} |
825 |
|
|
else |
826 |
|
|
{ |
827 |
|
|
|
828 |
|
|
/* FAT entry is not free... Advance the FAT index. */ |
829 |
|
2980 |
FAT_index++; |
830 |
|
|
|
831 |
|
|
/* Determine if we need to wrap the FAT index around. */ |
832 |
✓✓ |
2980 |
if (FAT_index >= (media_ptr -> fx_media_total_clusters + FX_FAT_ENTRY_START)) |
833 |
|
|
{ |
834 |
|
|
|
835 |
|
|
/* Wrap the search to the beginning FAT entry. */ |
836 |
|
1 |
FAT_index = FX_FAT_ENTRY_START; |
837 |
|
|
} |
838 |
|
|
} |
839 |
|
|
} while (FX_TRUE); |
840 |
|
|
#ifdef FX_ENABLE_EXFAT |
841 |
|
|
} |
842 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
843 |
|
|
|
844 |
|
|
/* Determine if we have found the first new cluster yet. */ |
845 |
✓✓ |
62858 |
if (first_new_cluster == 0) |
846 |
|
|
{ |
847 |
|
|
|
848 |
|
|
/* Remember the first new cluster. */ |
849 |
|
56382 |
first_new_cluster = FAT_index; |
850 |
|
|
|
851 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
852 |
|
|
if (media_ptr -> fx_media_fault_tolerant_enabled) |
853 |
|
|
{ |
854 |
|
|
|
855 |
|
|
/* Set the undo log now. */ |
856 |
|
|
if (copy_head_cluster == 0) |
857 |
|
|
{ |
858 |
|
|
status = _fx_fault_tolerant_set_FAT_chain(media_ptr, dont_use_fat_old, file_ptr -> fx_file_current_physical_cluster, |
859 |
|
|
first_new_cluster, media_ptr -> fx_media_fat_last, media_ptr -> fx_media_fat_last); |
860 |
|
|
} |
861 |
|
|
#ifdef FX_ENABLE_EXFAT |
862 |
|
|
else if (dont_use_fat_old && (insertion_back == media_ptr -> fx_media_fat_last)) |
863 |
|
|
{ |
864 |
|
|
status = _fx_fault_tolerant_set_FAT_chain(media_ptr, dont_use_fat_old, insertion_front, first_new_cluster, |
865 |
|
|
copy_head_cluster, file_ptr -> fx_file_last_physical_cluster + 1); |
866 |
|
|
} |
867 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
868 |
|
|
else |
869 |
|
|
{ |
870 |
|
|
|
871 |
|
|
status = _fx_fault_tolerant_set_FAT_chain(media_ptr, dont_use_fat_old, insertion_front, first_new_cluster, |
872 |
|
|
copy_head_cluster, insertion_back); |
873 |
|
|
} |
874 |
|
|
|
875 |
|
|
/* Check for good completion status. */ |
876 |
|
|
if (status != FX_SUCCESS) |
877 |
|
|
{ |
878 |
|
|
|
879 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
880 |
|
|
|
881 |
|
|
/* Release media protection. */ |
882 |
|
|
FX_UNPROTECT |
883 |
|
|
|
884 |
|
|
/* Return the error status. */ |
885 |
|
|
return(status); |
886 |
|
|
} |
887 |
|
|
} |
888 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
889 |
|
|
} |
890 |
|
|
|
891 |
|
|
/* Make a quick check to see if an empty, cluster-less file |
892 |
|
|
is being written to for the first time. */ |
893 |
✓✓ |
62858 |
if (last_cluster) |
894 |
|
|
{ |
895 |
|
|
|
896 |
|
|
/* Check for the file's cluster. We won't perform this link until the |
897 |
|
|
entire FAT chain is built. */ |
898 |
✓✓ |
56680 |
if (last_cluster != file_ptr -> fx_file_last_physical_cluster) |
899 |
|
|
{ |
900 |
|
|
#ifdef FX_ENABLE_EXFAT |
901 |
|
|
if (!(file_ptr -> fx_file_dir_entry.fx_dir_entry_dont_use_fat & 1) |
902 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
903 |
|
|
|| (media_ptr -> fx_media_fault_tolerant_enabled == FX_TRUE) |
904 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
905 |
|
|
) |
906 |
|
|
{ |
907 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
908 |
|
|
|
909 |
|
|
/* Normal condition - link the last cluster with the new |
910 |
|
|
found cluster. */ |
911 |
|
6476 |
status = _fx_utility_FAT_entry_write(media_ptr, last_cluster, FAT_index); |
912 |
|
|
#ifdef FX_ENABLE_EXFAT |
913 |
|
|
} |
914 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
915 |
|
|
} |
916 |
|
|
|
917 |
|
|
/* Check for a bad FAT write status. */ |
918 |
✓✓ |
56680 |
if (status != FX_SUCCESS) |
919 |
|
|
{ |
920 |
|
|
|
921 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
922 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
923 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
924 |
|
|
|
925 |
|
|
/* Release media protection. */ |
926 |
|
1 |
FX_UNPROTECT |
927 |
|
|
|
928 |
|
|
/* Return the bad status. */ |
929 |
|
1 |
return(status); |
930 |
|
|
} |
931 |
|
|
|
932 |
|
|
/* Determine if we are adding a sector after a write filled the previously |
933 |
|
|
allocated cluster exactly. */ |
934 |
|
56679 |
if ((file_ptr -> fx_file_current_relative_sector >= |
935 |
✓✓ |
56679 |
(media_ptr -> fx_media_sectors_per_cluster - 1)) && |
936 |
|
56586 |
(file_ptr -> fx_file_current_logical_offset >= |
937 |
✓✓ |
56586 |
media_ptr -> fx_media_bytes_per_sector)) |
938 |
|
|
{ |
939 |
|
|
|
940 |
|
|
/* Yes, we need to adjust all of the pertinent file parameters for |
941 |
|
|
writing into this newly allocated cluster. */ |
942 |
|
36865 |
file_ptr -> fx_file_current_physical_cluster = FAT_index; |
943 |
|
36865 |
file_ptr -> fx_file_current_relative_cluster++; |
944 |
|
36865 |
file_ptr -> fx_file_current_relative_sector = 0; |
945 |
|
36865 |
file_ptr -> fx_file_current_logical_sector = ((ULONG)media_ptr -> fx_media_data_sector_start) + |
946 |
|
36865 |
(((ULONG64)(FAT_index - FX_FAT_ENTRY_START)) * |
947 |
|
36865 |
((ULONG)media_ptr -> fx_media_sectors_per_cluster)); |
948 |
|
36865 |
file_ptr -> fx_file_current_logical_offset = 0; |
949 |
|
|
} |
950 |
|
|
} |
951 |
|
|
else |
952 |
|
|
{ |
953 |
|
|
|
954 |
|
|
/* This is the first cluster allocated for the file. Just |
955 |
|
|
remember it as being the first and setup the other file |
956 |
|
|
pointers accordingly. */ |
957 |
|
6178 |
file_ptr -> fx_file_first_physical_cluster = FAT_index; |
958 |
|
6178 |
file_ptr -> fx_file_current_physical_cluster = FAT_index; |
959 |
|
6178 |
file_ptr -> fx_file_current_relative_cluster = 0; |
960 |
|
6178 |
file_ptr -> fx_file_current_logical_sector = ((ULONG)media_ptr -> fx_media_data_sector_start) + |
961 |
|
6178 |
(((ULONG64)(FAT_index - FX_FAT_ENTRY_START)) * |
962 |
|
6178 |
((ULONG)media_ptr -> fx_media_sectors_per_cluster)); |
963 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
964 |
|
|
if (file_ptr -> fx_file_last_physical_cluster == 0) |
965 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
966 |
|
|
{ |
967 |
|
6178 |
file_ptr -> fx_file_current_logical_offset = 0; |
968 |
|
6178 |
file_ptr -> fx_file_current_file_offset = 0; |
969 |
|
|
} |
970 |
|
|
|
971 |
|
|
/* Also remember this as the first cluster in the directory |
972 |
|
|
entry. */ |
973 |
|
6178 |
file_ptr -> fx_file_dir_entry.fx_dir_entry_cluster = FAT_index; |
974 |
|
|
} |
975 |
|
|
#ifdef FX_ENABLE_EXFAT |
976 |
|
|
if (media_ptr -> fx_media_FAT_type == FX_exFAT) |
977 |
|
|
{ |
978 |
|
|
|
979 |
|
|
/* Update Bitmap */ |
980 |
|
|
status = _fx_utility_exFAT_cluster_state_set(media_ptr, FAT_index, FX_EXFAT_BITMAP_CLUSTER_OCCUPIED); |
981 |
|
|
|
982 |
|
|
if (status != FX_SUCCESS) |
983 |
|
|
{ |
984 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
985 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
986 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
987 |
|
|
|
988 |
|
|
/* Release media protection. */ |
989 |
|
|
FX_UNPROTECT |
990 |
|
|
|
991 |
|
|
/* Return the bad status. */ |
992 |
|
|
return(status); |
993 |
|
|
} |
994 |
|
|
|
995 |
|
|
/* Move cluster search pointer forward. */ |
996 |
|
|
media_ptr -> fx_media_cluster_search_start = FAT_index + 1; |
997 |
|
|
|
998 |
|
|
/* Determine if this needs to be wrapped. */ |
999 |
|
|
if (media_ptr -> fx_media_cluster_search_start >= media_ptr -> fx_media_total_clusters + FX_FAT_ENTRY_START) |
1000 |
|
|
{ |
1001 |
|
|
|
1002 |
|
|
/* Wrap the search to the beginning FAT entry. */ |
1003 |
|
|
media_ptr -> fx_media_cluster_search_start = FX_FAT_ENTRY_START; |
1004 |
|
|
} |
1005 |
|
|
} |
1006 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
1007 |
|
|
|
1008 |
|
|
/* Otherwise, remember the new FAT index as the last. */ |
1009 |
|
62857 |
last_cluster = FAT_index; |
1010 |
|
|
|
1011 |
|
|
/* Move to the next FAT entry. */ |
1012 |
|
62857 |
FAT_index = media_ptr -> fx_media_cluster_search_start; |
1013 |
|
|
} |
1014 |
|
|
#ifdef FX_ENABLE_EXFAT |
1015 |
|
|
if (!(file_ptr -> fx_file_dir_entry.fx_dir_entry_dont_use_fat & 1) |
1016 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
1017 |
|
|
|| (media_ptr -> fx_media_fault_tolerant_enabled == FX_TRUE) |
1018 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
1019 |
|
|
) |
1020 |
|
|
{ |
1021 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
1022 |
|
|
|
1023 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
1024 |
|
|
if (media_ptr -> fx_media_fault_tolerant_enabled) |
1025 |
|
|
{ |
1026 |
|
|
|
1027 |
|
|
/* Link the last cluster back to original FAT. */ |
1028 |
|
|
status = _fx_utility_FAT_entry_write(media_ptr, last_cluster, insertion_back); |
1029 |
|
|
} |
1030 |
|
|
else |
1031 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
1032 |
|
|
{ |
1033 |
|
|
|
1034 |
|
|
/* Place an end-of-file marker on the last cluster. */ |
1035 |
|
56381 |
status = _fx_utility_FAT_entry_write(media_ptr, last_cluster, media_ptr -> fx_media_fat_last); |
1036 |
|
|
} |
1037 |
|
|
|
1038 |
|
|
/* Check for a bad FAT write status. */ |
1039 |
✓✓ |
56381 |
if (status != FX_SUCCESS) |
1040 |
|
|
{ |
1041 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
1042 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
1043 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
1044 |
|
|
|
1045 |
|
|
/* Release media protection. */ |
1046 |
|
1 |
FX_UNPROTECT |
1047 |
|
|
|
1048 |
|
|
/* Return the bad status. */ |
1049 |
|
1 |
return(status); |
1050 |
|
|
} |
1051 |
|
|
|
1052 |
|
|
#ifdef FX_ENABLE_EXFAT |
1053 |
|
|
} |
1054 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
1055 |
|
|
|
1056 |
|
|
/* Determine if the file already had clusters. */ |
1057 |
✓✓ |
56380 |
if (file_ptr -> fx_file_last_physical_cluster) |
1058 |
|
|
{ |
1059 |
|
|
#ifdef FX_ENABLE_EXFAT |
1060 |
|
|
if (!(file_ptr -> fx_file_dir_entry.fx_dir_entry_dont_use_fat & 1)) |
1061 |
|
|
{ |
1062 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
1063 |
|
|
|
1064 |
|
|
/* Now, link the file's old last cluster to the first cluster of the new chain. */ |
1065 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
1066 |
|
|
if (insertion_front) |
1067 |
|
|
{ |
1068 |
|
|
status = _fx_utility_FAT_entry_write(media_ptr, insertion_front, first_new_cluster); |
1069 |
|
|
} |
1070 |
|
|
else if ((media_ptr -> fx_media_fault_tolerant_enabled == FX_FALSE) || |
1071 |
|
|
((replace_clusters == 0) && (first_new_cluster))) |
1072 |
|
|
{ |
1073 |
|
|
status = _fx_utility_FAT_entry_write(media_ptr, file_ptr -> fx_file_last_physical_cluster, first_new_cluster); |
1074 |
|
|
} |
1075 |
|
|
#else |
1076 |
|
50204 |
status = _fx_utility_FAT_entry_write(media_ptr, file_ptr -> fx_file_last_physical_cluster, first_new_cluster); |
1077 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
1078 |
|
|
|
1079 |
|
|
/* Check for a bad FAT write status. */ |
1080 |
✓✓ |
50204 |
if (status != FX_SUCCESS) |
1081 |
|
|
{ |
1082 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
1083 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
1084 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
1085 |
|
|
|
1086 |
|
|
/* Release media protection. */ |
1087 |
|
1 |
FX_UNPROTECT |
1088 |
|
|
|
1089 |
|
|
/* Return the bad status. */ |
1090 |
|
1 |
return(status); |
1091 |
|
|
} |
1092 |
|
|
#ifdef FX_ENABLE_EXFAT |
1093 |
|
|
} |
1094 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
1095 |
|
|
} |
1096 |
|
|
|
1097 |
|
|
#ifdef FX_FAULT_TOLERANT |
1098 |
|
|
|
1099 |
|
|
#ifdef FX_ENABLE_EXFAT |
1100 |
|
|
if (media_ptr -> fx_media_FAT_type == FX_exFAT) |
1101 |
|
|
{ |
1102 |
|
|
|
1103 |
|
|
/* Flush exFAT bitmap. */ |
1104 |
|
|
_fx_utility_exFAT_bitmap_flush(media_ptr); |
1105 |
|
|
} |
1106 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
1107 |
|
|
|
1108 |
|
|
/* Ensure the new FAT chain is properly written to the media. */ |
1109 |
|
|
|
1110 |
|
|
/* Flush the cached individual FAT entries */ |
1111 |
|
|
_fx_utility_FAT_flush(media_ptr); |
1112 |
|
|
#endif |
1113 |
|
|
|
1114 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
1115 |
|
|
if (media_ptr -> fx_media_fault_tolerant_enabled) |
1116 |
|
|
{ |
1117 |
|
|
|
1118 |
|
|
/* Clear undo phase. */ |
1119 |
|
|
media_ptr -> fx_media_fault_tolerant_state &= (UCHAR)(~FX_FAULT_TOLERANT_STATE_SET_FAT_CHAIN & 0xff); |
1120 |
|
|
|
1121 |
|
|
/* Update the last cluster? */ |
1122 |
|
|
if (insertion_back == media_ptr -> fx_media_fat_last) |
1123 |
|
|
{ |
1124 |
|
|
|
1125 |
|
|
/* Yes. Update the file control block with the last physical cluster. */ |
1126 |
|
|
file_ptr -> fx_file_last_physical_cluster = last_cluster; |
1127 |
|
|
} |
1128 |
|
|
} |
1129 |
|
|
else |
1130 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
1131 |
|
|
{ |
1132 |
|
|
|
1133 |
|
|
/* Update the file control block with the last physical cluster. */ |
1134 |
|
56379 |
file_ptr -> fx_file_last_physical_cluster = last_cluster; |
1135 |
|
|
} |
1136 |
|
|
} |
1137 |
|
|
|
1138 |
|
|
/* Check for a need to increment to the next sector within a previously |
1139 |
|
|
allocated cluster. */ |
1140 |
|
596858 |
if (file_ptr -> fx_file_current_logical_offset >= |
1141 |
✓✓ |
596858 |
media_ptr -> fx_media_bytes_per_sector) |
1142 |
|
|
{ |
1143 |
|
|
|
1144 |
|
|
/* Update the sector specific file parameters to start at the |
1145 |
|
|
next logical sector. */ |
1146 |
|
4675 |
file_ptr -> fx_file_current_logical_sector++; |
1147 |
|
4675 |
file_ptr -> fx_file_current_relative_sector++; |
1148 |
|
4675 |
file_ptr -> fx_file_current_logical_offset = 0; |
1149 |
|
|
} |
1150 |
|
|
|
1151 |
|
|
/* At this point there is enough room to perform the file write operation. */ |
1152 |
|
|
|
1153 |
|
|
/* Setup local buffer pointer. */ |
1154 |
|
596858 |
source_ptr = (UCHAR *)buffer_ptr; |
1155 |
|
|
|
1156 |
|
|
/* Setup the remaining number of bytes to write. */ |
1157 |
|
596858 |
bytes_remaining = size; |
1158 |
|
|
|
1159 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
1160 |
|
|
if (replace_clusters > 0) |
1161 |
|
|
{ |
1162 |
|
|
|
1163 |
|
|
/* Force update current cluster and sector. */ |
1164 |
|
|
file_ptr -> fx_file_current_physical_cluster = first_new_cluster; |
1165 |
|
|
file_ptr -> fx_file_current_logical_sector = ((ULONG)media_ptr -> fx_media_data_sector_start) + |
1166 |
|
|
(((ULONG64)(first_new_cluster - FX_FAT_ENTRY_START)) * |
1167 |
|
|
((ULONG)media_ptr -> fx_media_sectors_per_cluster)) + |
1168 |
|
|
file_ptr -> fx_file_current_relative_sector; |
1169 |
|
|
|
1170 |
|
|
/* Copy sectors in replaced cluster but not overwritten at the front. */ |
1171 |
|
|
for (i = 0; i < file_ptr -> fx_file_current_relative_sector; i++) |
1172 |
|
|
{ |
1173 |
|
|
status = _fx_utility_logical_sector_read(media_ptr, |
1174 |
|
|
((ULONG)media_ptr -> fx_media_data_sector_start) + |
1175 |
|
|
(((ULONG)(copy_head_cluster - FX_FAT_ENTRY_START)) * |
1176 |
|
|
((ULONG)media_ptr -> fx_media_sectors_per_cluster)) + i, |
1177 |
|
|
media_ptr -> fx_media_memory_buffer, ((ULONG) 1), FX_DATA_SECTOR); |
1178 |
|
|
|
1179 |
|
|
/* Check for good completion status. */ |
1180 |
|
|
if (status != FX_SUCCESS) |
1181 |
|
|
{ |
1182 |
|
|
|
1183 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
1184 |
|
|
|
1185 |
|
|
/* Release media protection. */ |
1186 |
|
|
FX_UNPROTECT |
1187 |
|
|
|
1188 |
|
|
/* Return the error status. */ |
1189 |
|
|
return(status); |
1190 |
|
|
} |
1191 |
|
|
|
1192 |
|
|
/* Write back the current logical sector. */ |
1193 |
|
|
status = _fx_utility_logical_sector_write(media_ptr, |
1194 |
|
|
((ULONG)media_ptr -> fx_media_data_sector_start) + |
1195 |
|
|
(((ULONG)(file_ptr -> fx_file_current_physical_cluster - FX_FAT_ENTRY_START)) * |
1196 |
|
|
((ULONG)media_ptr -> fx_media_sectors_per_cluster)) + i, |
1197 |
|
|
media_ptr -> fx_media_memory_buffer, ((ULONG) 1), FX_DATA_SECTOR); |
1198 |
|
|
|
1199 |
|
|
/* Check for good completion status. */ |
1200 |
|
|
if (status != FX_SUCCESS) |
1201 |
|
|
{ |
1202 |
|
|
|
1203 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
1204 |
|
|
|
1205 |
|
|
/* Release media protection. */ |
1206 |
|
|
FX_UNPROTECT |
1207 |
|
|
|
1208 |
|
|
/* Return the error status. */ |
1209 |
|
|
return(status); |
1210 |
|
|
} |
1211 |
|
|
} |
1212 |
|
|
} |
1213 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
1214 |
|
|
|
1215 |
|
|
/* Loop to write all of the bytes. */ |
1216 |
✓✓ |
1152964 |
while (bytes_remaining) |
1217 |
|
|
{ |
1218 |
|
|
|
1219 |
|
|
/* Determine if a beginning or ending partial write is required. */ |
1220 |
✓✓ |
615983 |
if ((file_ptr -> fx_file_current_logical_offset) || |
1221 |
✓✓ |
88327 |
(bytes_remaining < media_ptr -> fx_media_bytes_per_sector)) |
1222 |
|
|
{ |
1223 |
|
|
|
1224 |
|
|
/* A partial sector write is required. */ |
1225 |
|
|
|
1226 |
|
|
/* Read the current logical sector. */ |
1227 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
1228 |
|
|
if (replace_clusters > 0) |
1229 |
|
|
{ |
1230 |
|
|
if (file_ptr -> fx_file_current_physical_cluster == first_new_cluster) |
1231 |
|
|
{ |
1232 |
|
|
|
1233 |
|
|
/* It's at beginning. */ |
1234 |
|
|
status = _fx_utility_logical_sector_read(media_ptr, |
1235 |
|
|
((ULONG)media_ptr -> fx_media_data_sector_start) + |
1236 |
|
|
(((ULONG)(copy_head_cluster - FX_FAT_ENTRY_START)) * |
1237 |
|
|
((ULONG)media_ptr -> fx_media_sectors_per_cluster)) + |
1238 |
|
|
file_ptr -> fx_file_current_relative_sector, |
1239 |
|
|
media_ptr -> fx_media_memory_buffer, (ULONG)1, FX_DATA_SECTOR); |
1240 |
|
|
} |
1241 |
|
|
else if (data_append == FX_FALSE) |
1242 |
|
|
{ |
1243 |
|
|
|
1244 |
|
|
/* It's at ending. */ |
1245 |
|
|
status = _fx_utility_logical_sector_read(media_ptr, |
1246 |
|
|
((ULONG)media_ptr -> fx_media_data_sector_start) + |
1247 |
|
|
(((ULONG)(copy_tail_cluster - FX_FAT_ENTRY_START)) * |
1248 |
|
|
((ULONG)media_ptr -> fx_media_sectors_per_cluster)) + |
1249 |
|
|
file_ptr -> fx_file_current_relative_sector, |
1250 |
|
|
media_ptr -> fx_media_memory_buffer, (ULONG)1, FX_DATA_SECTOR); |
1251 |
|
|
} |
1252 |
|
|
else |
1253 |
|
|
{ |
1254 |
|
|
|
1255 |
|
|
/* It's at ending. */ |
1256 |
|
|
status = _fx_utility_logical_sector_read(media_ptr, |
1257 |
|
|
file_ptr -> fx_file_current_logical_sector, |
1258 |
|
|
media_ptr -> fx_media_memory_buffer, ((ULONG) 1), FX_DATA_SECTOR); |
1259 |
|
|
} |
1260 |
|
|
} |
1261 |
|
|
else |
1262 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
1263 |
|
|
{ |
1264 |
|
582290 |
status = _fx_utility_logical_sector_read(media_ptr, |
1265 |
|
|
file_ptr -> fx_file_current_logical_sector, |
1266 |
|
582290 |
media_ptr -> fx_media_memory_buffer, ((ULONG) 1), FX_DATA_SECTOR); |
1267 |
|
|
} |
1268 |
|
|
|
1269 |
|
|
/* Check for good completion status. */ |
1270 |
✓✓ |
582290 |
if (status != FX_SUCCESS) |
1271 |
|
|
{ |
1272 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
1273 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
1274 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
1275 |
|
|
|
1276 |
|
|
/* Release media protection. */ |
1277 |
|
13365 |
FX_UNPROTECT |
1278 |
|
|
|
1279 |
|
|
/* Return the error status. */ |
1280 |
|
13365 |
return(status); |
1281 |
|
|
} |
1282 |
|
|
|
1283 |
|
|
/* Copy the appropriate number of bytes into the destination buffer. */ |
1284 |
|
568925 |
copy_bytes = media_ptr -> fx_media_bytes_per_sector - |
1285 |
|
568925 |
file_ptr -> fx_file_current_logical_offset; |
1286 |
|
|
|
1287 |
|
|
/* Check to see if only a portion of the sector needs to be |
1288 |
|
|
copied. */ |
1289 |
✓✓ |
568925 |
if (copy_bytes > bytes_remaining) |
1290 |
|
|
{ |
1291 |
|
|
|
1292 |
|
|
/* Adjust the number of bytes to copy. */ |
1293 |
|
524833 |
copy_bytes = (ULONG)bytes_remaining; |
1294 |
|
|
} |
1295 |
|
|
|
1296 |
|
|
/* Actually perform the memory copy. */ |
1297 |
|
568925 |
_fx_utility_memory_copy(source_ptr, ((UCHAR *)media_ptr -> fx_media_memory_buffer) + /* Use case of memcpy is verified. */ |
1298 |
|
568925 |
file_ptr -> fx_file_current_logical_offset, |
1299 |
|
|
copy_bytes); |
1300 |
|
|
|
1301 |
|
|
/* Write back the current logical sector. */ |
1302 |
|
568925 |
status = _fx_utility_logical_sector_write(media_ptr, file_ptr -> fx_file_current_logical_sector, |
1303 |
|
568925 |
media_ptr -> fx_media_memory_buffer, ((ULONG) 1), FX_DATA_SECTOR); |
1304 |
|
|
|
1305 |
|
|
/* Check for good completion status. */ |
1306 |
✓✓ |
568925 |
if (status != FX_SUCCESS) |
1307 |
|
|
{ |
1308 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
1309 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
1310 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
1311 |
|
|
|
1312 |
|
|
/* Release media protection. */ |
1313 |
|
4153 |
FX_UNPROTECT |
1314 |
|
|
|
1315 |
|
|
/* Return the error status. */ |
1316 |
|
4153 |
return(status); |
1317 |
|
|
} |
1318 |
|
|
|
1319 |
|
|
|
1320 |
|
|
/* Increment the logical sector byte offset. */ |
1321 |
|
564772 |
file_ptr -> fx_file_current_logical_offset = |
1322 |
|
564772 |
file_ptr -> fx_file_current_logical_offset + copy_bytes; |
1323 |
|
|
|
1324 |
|
|
/* Adjust the remaining bytes to read. */ |
1325 |
|
564772 |
bytes_remaining = bytes_remaining - copy_bytes; |
1326 |
|
|
|
1327 |
|
|
/* Adjust the pointer to the source buffer. */ |
1328 |
|
564772 |
source_ptr = source_ptr + copy_bytes; |
1329 |
|
|
} |
1330 |
|
|
else |
1331 |
|
|
{ |
1332 |
|
|
|
1333 |
|
|
/* Attempt to write multiple sectors directly to the media. */ |
1334 |
|
|
|
1335 |
|
|
/* Calculate the number of whole sectors to write. */ |
1336 |
|
33693 |
sectors = (UINT)(bytes_remaining / media_ptr -> fx_media_bytes_per_sector); |
1337 |
|
|
|
1338 |
|
33693 |
next_cluster = cluster = file_ptr -> fx_file_current_physical_cluster; |
1339 |
|
|
|
1340 |
|
33693 |
for (i = (media_ptr -> fx_media_sectors_per_cluster - |
1341 |
✓✓ |
34204 |
file_ptr -> fx_file_current_relative_sector); i < sectors; i += media_ptr -> fx_media_sectors_per_cluster) |
1342 |
|
|
{ |
1343 |
|
|
#ifdef FX_ENABLE_EXFAT |
1344 |
|
|
if (file_ptr -> fx_file_dir_entry.fx_dir_entry_dont_use_fat & 1) |
1345 |
|
|
{ |
1346 |
|
|
cluster++; |
1347 |
|
|
} |
1348 |
|
|
else |
1349 |
|
|
{ |
1350 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
1351 |
|
848 |
status = _fx_utility_FAT_entry_read(media_ptr, cluster, &next_cluster); |
1352 |
|
|
|
1353 |
|
|
/* Determine if an error is present. */ |
1354 |
✓✓✓✓
|
848 |
if ((status != FX_SUCCESS) || (next_cluster < FX_FAT_ENTRY_START) || |
1355 |
✓✓ |
673 |
(next_cluster > media_ptr -> fx_media_fat_reserved)) |
1356 |
|
|
{ |
1357 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
1358 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
1359 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
1360 |
|
|
|
1361 |
|
|
/* Release media protection. */ |
1362 |
|
335 |
FX_UNPROTECT |
1363 |
|
|
|
1364 |
|
|
/* Send error message back to caller. */ |
1365 |
✓✓ |
335 |
if (status != FX_SUCCESS) |
1366 |
|
|
{ |
1367 |
|
174 |
return(status); |
1368 |
|
|
} |
1369 |
|
|
else |
1370 |
|
|
{ |
1371 |
|
161 |
return(FX_FILE_CORRUPT); |
1372 |
|
|
} |
1373 |
|
|
} |
1374 |
|
|
|
1375 |
✓✓ |
513 |
if (next_cluster != cluster + 1) |
1376 |
|
|
{ |
1377 |
|
2 |
break; |
1378 |
|
|
} |
1379 |
|
|
else |
1380 |
|
|
{ |
1381 |
|
511 |
cluster = next_cluster; |
1382 |
|
|
} |
1383 |
|
|
#ifdef FX_ENABLE_EXFAT |
1384 |
|
|
} |
1385 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
1386 |
|
|
} |
1387 |
|
|
|
1388 |
✓✓ |
33358 |
if (i < sectors) |
1389 |
|
|
{ |
1390 |
|
2 |
sectors = i; |
1391 |
|
|
} |
1392 |
|
|
|
1393 |
|
|
/* Perform the data write directly from the user's buffer of |
1394 |
|
|
the appropriate number of sectors. */ |
1395 |
|
33358 |
status = _fx_utility_logical_sector_write(media_ptr, file_ptr -> fx_file_current_logical_sector, |
1396 |
|
|
source_ptr, (ULONG) sectors, FX_DATA_SECTOR); |
1397 |
|
|
|
1398 |
|
|
/* Check for good completion status. */ |
1399 |
✓✓ |
33358 |
if (status != FX_SUCCESS) |
1400 |
|
|
{ |
1401 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
1402 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
1403 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
1404 |
|
|
|
1405 |
|
|
/* Release media protection. */ |
1406 |
|
435 |
FX_UNPROTECT |
1407 |
|
|
|
1408 |
|
|
/* Return the error status. */ |
1409 |
|
435 |
return(status); |
1410 |
|
|
} |
1411 |
|
|
|
1412 |
|
|
/* Now adjust the various file pointers. */ |
1413 |
|
|
|
1414 |
|
|
/* Increment the current logical sector. Subtract one from |
1415 |
|
|
the sector count because we are going to use the logical |
1416 |
|
|
offset to do additional sector/cluster arithmetic below. */ |
1417 |
|
32923 |
file_ptr -> fx_file_current_logical_sector = |
1418 |
|
32923 |
file_ptr -> fx_file_current_logical_sector + |
1419 |
|
32923 |
(sectors - 1); |
1420 |
|
|
|
1421 |
|
|
/* Move the relative cluster and sector as well. */ |
1422 |
|
32923 |
file_ptr -> fx_file_current_relative_cluster = file_ptr -> fx_file_current_relative_cluster + |
1423 |
|
32923 |
(file_ptr -> fx_file_current_relative_sector + (sectors - 1)) / |
1424 |
|
32923 |
media_ptr -> fx_media_sectors_per_cluster; |
1425 |
|
|
|
1426 |
|
32923 |
file_ptr -> fx_file_current_relative_sector = |
1427 |
|
32923 |
(file_ptr -> fx_file_current_relative_sector + (sectors - 1)) % |
1428 |
|
32923 |
media_ptr -> fx_media_sectors_per_cluster; |
1429 |
|
|
|
1430 |
|
|
/* Increment the logical sector byte offset. */ |
1431 |
|
32923 |
file_ptr -> fx_file_current_logical_offset = |
1432 |
|
32923 |
media_ptr -> fx_media_bytes_per_sector; |
1433 |
|
|
|
1434 |
|
32923 |
file_ptr -> fx_file_current_physical_cluster = cluster; |
1435 |
|
|
|
1436 |
|
|
/* Adjust the remaining bytes. */ |
1437 |
|
32923 |
bytes_remaining = bytes_remaining - |
1438 |
|
32923 |
(((ULONG)media_ptr -> fx_media_bytes_per_sector) * sectors); |
1439 |
|
|
|
1440 |
|
|
/* Adjust the pointer to the source buffer. */ |
1441 |
|
32923 |
source_ptr = source_ptr + |
1442 |
|
32923 |
(((ULONG)media_ptr -> fx_media_bytes_per_sector) * sectors); |
1443 |
|
|
} |
1444 |
|
|
|
1445 |
|
|
/* At this point, we have either written a partial sector or have successfully |
1446 |
|
|
written one or more whole sectors. Determine if we are at the end of |
1447 |
|
|
the current logical sector. */ |
1448 |
|
597695 |
if (file_ptr -> fx_file_current_logical_offset >= |
1449 |
✓✓ |
597695 |
media_ptr -> fx_media_bytes_per_sector) |
1450 |
|
|
{ |
1451 |
|
|
|
1452 |
|
|
/* Determine if we are at the exact physical end of the file. */ |
1453 |
✓✓ |
76022 |
if ((bytes_remaining == 0) && |
1454 |
|
55700 |
((file_ptr -> fx_file_current_file_offset + size) >= |
1455 |
✓✓ |
55700 |
file_ptr -> fx_file_current_available_size)) |
1456 |
|
|
{ |
1457 |
|
|
|
1458 |
|
|
/* Skip the following file parameter adjustments. The next write will |
1459 |
|
|
detect the logical offset out of the range of the sector and reset |
1460 |
|
|
all of the pertinent information. */ |
1461 |
|
37229 |
break; |
1462 |
|
|
} |
1463 |
|
|
|
1464 |
|
|
/* We need to move to the next logical sector, but first |
1465 |
|
|
determine if the next logical sector is within the same |
1466 |
|
|
cluster. */ |
1467 |
|
|
|
1468 |
|
|
/* Increment the current relative sector in the cluster. */ |
1469 |
|
38793 |
file_ptr -> fx_file_current_relative_sector++; |
1470 |
|
|
|
1471 |
|
|
/* Determine if this is in a new cluster. */ |
1472 |
|
38793 |
if (file_ptr -> fx_file_current_relative_sector >= |
1473 |
✓✓ |
38793 |
media_ptr -> fx_media_sectors_per_cluster) |
1474 |
|
|
{ |
1475 |
|
|
|
1476 |
|
|
/* Yes, we need to move to the next cluster. */ |
1477 |
|
|
#ifdef FX_ENABLE_EXFAT |
1478 |
|
|
if (file_ptr -> fx_file_dir_entry.fx_dir_entry_dont_use_fat & 1) |
1479 |
|
|
{ |
1480 |
|
|
|
1481 |
|
|
next_cluster = file_ptr -> fx_file_current_physical_cluster + 1; |
1482 |
|
|
} |
1483 |
|
|
else |
1484 |
|
|
{ |
1485 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
1486 |
|
|
|
1487 |
|
|
/* Read the FAT entry of the current cluster to find |
1488 |
|
|
the next cluster. */ |
1489 |
|
24692 |
status = _fx_utility_FAT_entry_read(media_ptr, |
1490 |
|
|
file_ptr -> fx_file_current_physical_cluster, &next_cluster); |
1491 |
|
|
|
1492 |
|
|
/* Determine if an error is present. */ |
1493 |
✓✓✓✓
|
24692 |
if ((status != FX_SUCCESS) || (next_cluster < FX_FAT_ENTRY_START) || |
1494 |
✓✓ |
23907 |
(next_cluster > media_ptr -> fx_media_fat_reserved)) |
1495 |
|
|
{ |
1496 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
1497 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
1498 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
1499 |
|
|
|
1500 |
|
|
/* Release media protection. */ |
1501 |
|
4360 |
FX_UNPROTECT |
1502 |
|
|
|
1503 |
|
|
/* Send error message back to caller. */ |
1504 |
✓✓ |
4360 |
if (status != FX_SUCCESS) |
1505 |
|
|
{ |
1506 |
|
784 |
return(status); |
1507 |
|
|
} |
1508 |
|
|
else |
1509 |
|
|
{ |
1510 |
|
3576 |
return(FX_FILE_CORRUPT); |
1511 |
|
|
} |
1512 |
|
|
} |
1513 |
|
|
#ifdef FX_ENABLE_EXFAT |
1514 |
|
|
} |
1515 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
1516 |
|
|
|
1517 |
|
|
/* Otherwise, we have a new cluster. Save it in the file |
1518 |
|
|
control block and calculate a new logical sector value. */ |
1519 |
|
20332 |
file_ptr -> fx_file_current_physical_cluster = next_cluster; |
1520 |
|
20332 |
file_ptr -> fx_file_current_relative_cluster++; |
1521 |
|
20332 |
file_ptr -> fx_file_current_logical_sector = ((ULONG)media_ptr -> fx_media_data_sector_start) + |
1522 |
|
20332 |
((((ULONG64)next_cluster) - FX_FAT_ENTRY_START) * |
1523 |
|
20332 |
((ULONG)media_ptr -> fx_media_sectors_per_cluster)); |
1524 |
|
20332 |
file_ptr -> fx_file_current_relative_sector = 0; |
1525 |
|
|
} |
1526 |
|
|
else |
1527 |
|
|
{ |
1528 |
|
|
|
1529 |
|
|
/* Still within the same cluster so just increment the |
1530 |
|
|
logical sector. */ |
1531 |
|
14101 |
file_ptr -> fx_file_current_logical_sector++; |
1532 |
|
|
} |
1533 |
|
|
|
1534 |
|
|
/* In either case, we are now positioned at a new sector so |
1535 |
|
|
clear the logical sector offset. */ |
1536 |
|
34433 |
file_ptr -> fx_file_current_logical_offset = 0; |
1537 |
|
|
} |
1538 |
|
|
} |
1539 |
|
|
|
1540 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
1541 |
|
|
if (((replace_clusters > 0) && (data_append == FX_FALSE)) && |
1542 |
|
|
(file_ptr -> fx_file_current_logical_offset || file_ptr -> fx_file_current_relative_sector)) |
1543 |
|
|
{ |
1544 |
|
|
|
1545 |
|
|
/* Copy sectors in replaced cluster but not overwritten at the end. */ |
1546 |
|
|
if (file_ptr -> fx_file_current_logical_offset == 0) |
1547 |
|
|
{ |
1548 |
|
|
i = file_ptr -> fx_file_current_relative_sector; |
1549 |
|
|
} |
1550 |
|
|
else |
1551 |
|
|
{ |
1552 |
|
|
i = file_ptr -> fx_file_current_relative_sector + 1; |
1553 |
|
|
} |
1554 |
|
|
for (; i < media_ptr -> fx_media_sectors_per_cluster; i++) |
1555 |
|
|
{ |
1556 |
|
|
status = _fx_utility_logical_sector_read(media_ptr, |
1557 |
|
|
((ULONG)media_ptr -> fx_media_data_sector_start) + |
1558 |
|
|
(((ULONG)(copy_tail_cluster - FX_FAT_ENTRY_START)) * |
1559 |
|
|
((ULONG)media_ptr -> fx_media_sectors_per_cluster)) + i, |
1560 |
|
|
media_ptr -> fx_media_memory_buffer, ((ULONG) 1), FX_DATA_SECTOR); |
1561 |
|
|
|
1562 |
|
|
/* Check for good completion status. */ |
1563 |
|
|
if (status != FX_SUCCESS) |
1564 |
|
|
{ |
1565 |
|
|
|
1566 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
1567 |
|
|
|
1568 |
|
|
/* Release media protection. */ |
1569 |
|
|
FX_UNPROTECT |
1570 |
|
|
|
1571 |
|
|
/* Return the error status. */ |
1572 |
|
|
return(status); |
1573 |
|
|
} |
1574 |
|
|
|
1575 |
|
|
/* Write back the current logical sector. */ |
1576 |
|
|
status = _fx_utility_logical_sector_write(media_ptr, |
1577 |
|
|
((ULONG)media_ptr -> fx_media_data_sector_start) + |
1578 |
|
|
(((ULONG)(file_ptr -> fx_file_current_physical_cluster - FX_FAT_ENTRY_START)) * |
1579 |
|
|
((ULONG)media_ptr -> fx_media_sectors_per_cluster)) + i, |
1580 |
|
|
media_ptr -> fx_media_memory_buffer, ((ULONG) 1), FX_DATA_SECTOR); |
1581 |
|
|
|
1582 |
|
|
/* Check for good completion status. */ |
1583 |
|
|
if (status != FX_SUCCESS) |
1584 |
|
|
{ |
1585 |
|
|
|
1586 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
1587 |
|
|
|
1588 |
|
|
/* Release media protection. */ |
1589 |
|
|
FX_UNPROTECT |
1590 |
|
|
|
1591 |
|
|
/* Return the error status. */ |
1592 |
|
|
return(status); |
1593 |
|
|
} |
1594 |
|
|
} |
1595 |
|
|
} |
1596 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
1597 |
|
|
|
1598 |
|
|
/* Adjust the current file offset accordingly. */ |
1599 |
|
574210 |
file_ptr -> fx_file_current_file_offset = |
1600 |
|
574210 |
file_ptr -> fx_file_current_file_offset + size; |
1601 |
|
|
|
1602 |
|
|
/* Copy the new file size into the directory entry. */ |
1603 |
|
574210 |
file_ptr -> fx_file_dir_entry.fx_dir_entry_file_size = |
1604 |
|
574210 |
file_ptr -> fx_file_current_file_size; |
1605 |
|
|
|
1606 |
|
|
/* Determine if this write was done past the previous file size. */ |
1607 |
|
574210 |
if (file_ptr -> fx_file_current_file_offset > |
1608 |
✓✓ |
574210 |
file_ptr -> fx_file_current_file_size) |
1609 |
|
|
{ |
1610 |
|
|
|
1611 |
|
|
/* Yes, we have written past the previous end of the file. Update |
1612 |
|
|
the file size. */ |
1613 |
|
574153 |
file_ptr -> fx_file_current_file_size = file_ptr -> fx_file_current_file_offset; |
1614 |
|
|
|
1615 |
|
|
#ifndef FX_DONT_UPDATE_OPEN_FILES |
1616 |
|
|
|
1617 |
|
|
/* Search the opened files list to see if the same file is opened for reading. */ |
1618 |
|
574153 |
open_count = media_ptr -> fx_media_opened_file_count; |
1619 |
|
574153 |
search_ptr = media_ptr -> fx_media_opened_file_list; |
1620 |
✓✓ |
1460301 |
while (open_count) |
1621 |
|
|
{ |
1622 |
|
|
|
1623 |
|
|
/* Is this file the same file opened for reading? */ |
1624 |
✓✓ |
886148 |
if ((search_ptr != file_ptr) && |
1625 |
|
311995 |
(search_ptr -> fx_file_dir_entry.fx_dir_entry_log_sector == |
1626 |
✓✓ |
311995 |
file_ptr -> fx_file_dir_entry.fx_dir_entry_log_sector) && |
1627 |
|
301891 |
(search_ptr -> fx_file_dir_entry.fx_dir_entry_byte_offset == |
1628 |
✓✓ |
301891 |
file_ptr -> fx_file_dir_entry.fx_dir_entry_byte_offset)) |
1629 |
|
|
{ |
1630 |
|
|
|
1631 |
|
|
/* Yes, the same file is opened for reading. */ |
1632 |
|
|
|
1633 |
|
|
/* Setup the new size. */ |
1634 |
|
72878 |
search_ptr -> fx_file_current_file_size = file_ptr -> fx_file_current_file_offset; |
1635 |
|
|
|
1636 |
|
|
/* Setup the new directory entry. */ |
1637 |
|
72878 |
search_ptr -> fx_file_dir_entry.fx_dir_entry_cluster = file_ptr -> fx_file_dir_entry.fx_dir_entry_cluster; |
1638 |
|
72878 |
search_ptr -> fx_file_dir_entry.fx_dir_entry_file_size = file_ptr -> fx_file_dir_entry.fx_dir_entry_file_size; |
1639 |
|
72878 |
search_ptr -> fx_file_dir_entry.fx_dir_entry_log_sector = file_ptr -> fx_file_dir_entry.fx_dir_entry_log_sector; |
1640 |
|
72878 |
search_ptr -> fx_file_dir_entry.fx_dir_entry_byte_offset = file_ptr -> fx_file_dir_entry.fx_dir_entry_byte_offset; |
1641 |
|
|
|
1642 |
|
|
/* Setup the last cluster. This really isn't used during reading, but it is nice to keep things |
1643 |
|
|
consistent. */ |
1644 |
|
72878 |
search_ptr -> fx_file_last_physical_cluster = file_ptr -> fx_file_last_physical_cluster; |
1645 |
|
|
|
1646 |
|
|
/* Update the available clusters as well. */ |
1647 |
|
72878 |
search_ptr -> fx_file_current_available_size = file_ptr -> fx_file_current_available_size; |
1648 |
|
|
|
1649 |
|
|
/* Determine if an empty file was previously opened. */ |
1650 |
✓✓ |
72878 |
if (search_ptr -> fx_file_total_clusters == 0) |
1651 |
|
|
{ |
1652 |
|
|
|
1653 |
|
|
/* Setup initial parameters. */ |
1654 |
|
10 |
search_ptr -> fx_file_total_clusters = file_ptr -> fx_file_total_clusters; |
1655 |
|
10 |
search_ptr -> fx_file_current_physical_cluster = file_ptr -> fx_file_first_physical_cluster; |
1656 |
|
10 |
search_ptr -> fx_file_current_relative_cluster = 0; |
1657 |
|
10 |
search_ptr -> fx_file_current_logical_sector = ((ULONG)media_ptr -> fx_media_data_sector_start) + |
1658 |
|
10 |
(((ULONG64)(file_ptr -> fx_file_first_physical_cluster - FX_FAT_ENTRY_START)) * |
1659 |
|
10 |
((ULONG)media_ptr -> fx_media_sectors_per_cluster)); |
1660 |
|
10 |
search_ptr -> fx_file_current_relative_sector = 0; |
1661 |
|
10 |
search_ptr -> fx_file_current_logical_offset = 0; |
1662 |
|
10 |
search_ptr -> fx_file_current_file_offset = 0; |
1663 |
|
|
} |
1664 |
|
|
} |
1665 |
|
|
|
1666 |
|
|
/* Adjust the pointer and decrement the search count. */ |
1667 |
|
886148 |
search_ptr = search_ptr -> fx_file_opened_next; |
1668 |
|
886148 |
open_count--; |
1669 |
|
|
} |
1670 |
|
|
#endif |
1671 |
|
|
} |
1672 |
|
|
|
1673 |
|
|
/* Finally, mark this file as modified. */ |
1674 |
|
574210 |
file_ptr -> fx_file_modified = FX_TRUE; |
1675 |
|
|
|
1676 |
|
|
#ifdef FX_FAULT_TOLERANT_DATA |
1677 |
|
|
|
1678 |
|
|
/* Ensure that all file data is flushed out. */ |
1679 |
|
|
|
1680 |
|
|
/* Flush the internal logical sector cache. */ |
1681 |
|
|
_fx_utility_logical_sector_flush(media_ptr, 1, media_ptr -> fx_media_total_sectors, FX_FALSE); |
1682 |
|
|
|
1683 |
|
|
/* Lockout interrupts for time/date access. */ |
1684 |
|
|
FX_DISABLE_INTS |
1685 |
|
|
|
1686 |
|
|
/* Set the new time and date. */ |
1687 |
|
|
file_ptr -> fx_file_dir_entry.fx_dir_entry_time = _fx_system_time; |
1688 |
|
|
file_ptr -> fx_file_dir_entry.fx_dir_entry_date = _fx_system_date; |
1689 |
|
|
|
1690 |
|
|
/* Restore interrupts. */ |
1691 |
|
|
FX_RESTORE_INTS |
1692 |
|
|
|
1693 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
1694 |
|
|
if (media_ptr -> fx_media_fault_tolerant_enabled) |
1695 |
|
|
{ |
1696 |
|
|
|
1697 |
|
|
/* Copy the new file size into the directory entry. */ |
1698 |
|
|
file_ptr -> fx_file_dir_entry.fx_dir_entry_file_size = file_ptr -> fx_file_current_file_size; |
1699 |
|
|
} |
1700 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
1701 |
|
|
|
1702 |
|
|
/* Write the directory entry to the media. */ |
1703 |
|
|
#ifdef FX_ENABLE_EXFAT |
1704 |
|
|
if (media_ptr -> fx_media_FAT_type == FX_exFAT) |
1705 |
|
|
{ |
1706 |
|
|
|
1707 |
|
|
status = _fx_directory_exFAT_entry_write( |
1708 |
|
|
media_ptr, &(file_ptr -> fx_file_dir_entry), UPDATE_STREAM); |
1709 |
|
|
} |
1710 |
|
|
else |
1711 |
|
|
{ |
1712 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
1713 |
|
|
status = _fx_directory_entry_write(media_ptr, &(file_ptr -> fx_file_dir_entry)); |
1714 |
|
|
#ifdef FX_ENABLE_EXFAT |
1715 |
|
|
} |
1716 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
1717 |
|
|
|
1718 |
|
|
/* Check for a good status. */ |
1719 |
|
|
if (status != FX_SUCCESS) |
1720 |
|
|
{ |
1721 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
1722 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
1723 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
1724 |
|
|
|
1725 |
|
|
/* Release media protection. */ |
1726 |
|
|
FX_UNPROTECT |
1727 |
|
|
|
1728 |
|
|
/* Error writing the directory. */ |
1729 |
|
|
return(status); |
1730 |
|
|
} |
1731 |
|
|
#endif |
1732 |
|
|
|
1733 |
|
|
/* Update the trace event with the bytes written. */ |
1734 |
|
|
FX_TRACE_EVENT_UPDATE(trace_event, trace_timestamp, FX_TRACE_FILE_WRITE, 0, 0, 0, size) |
1735 |
|
|
|
1736 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
1737 |
|
|
/* End transaction. */ |
1738 |
|
|
status = _fx_fault_tolerant_transaction_end(media_ptr); |
1739 |
|
|
|
1740 |
|
|
/* Check for a bad status. */ |
1741 |
|
|
if (status != FX_SUCCESS) |
1742 |
|
|
{ |
1743 |
|
|
|
1744 |
|
|
/* Release media protection. */ |
1745 |
|
|
FX_UNPROTECT |
1746 |
|
|
|
1747 |
|
|
/* Return the bad status. */ |
1748 |
|
|
return(status); |
1749 |
|
|
} |
1750 |
|
|
|
1751 |
|
|
/* Update maximum size used if necessary. */ |
1752 |
|
|
if (file_ptr -> fx_file_current_file_offset > file_ptr -> fx_file_maximum_size_used) |
1753 |
|
|
{ |
1754 |
|
|
file_ptr -> fx_file_maximum_size_used = file_ptr -> fx_file_current_file_offset; |
1755 |
|
|
} |
1756 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
1757 |
|
|
|
1758 |
|
|
/* Invoke file write callback. */ |
1759 |
✓✓ |
574210 |
if (file_ptr -> fx_file_write_notify) |
1760 |
|
|
{ |
1761 |
|
1 |
file_ptr -> fx_file_write_notify(file_ptr); |
1762 |
|
|
} |
1763 |
|
|
|
1764 |
|
|
/* Release media protection. */ |
1765 |
|
574210 |
FX_UNPROTECT |
1766 |
|
|
|
1767 |
|
|
/* Return a successful status to the caller. */ |
1768 |
|
574210 |
return(FX_SUCCESS); |
1769 |
|
|
} |
1770 |
|
|
|