1 |
|
|
/*************************************************************************** |
2 |
|
|
* Copyright (c) 2024 Microsoft Corporation |
3 |
|
|
* |
4 |
|
|
* This program and the accompanying materials are made available under the |
5 |
|
|
* terms of the MIT License which is available at |
6 |
|
|
* https://opensource.org/licenses/MIT. |
7 |
|
|
* |
8 |
|
|
* SPDX-License-Identifier: MIT |
9 |
|
|
**************************************************************************/ |
10 |
|
|
|
11 |
|
|
|
12 |
|
|
/**************************************************************************/ |
13 |
|
|
/**************************************************************************/ |
14 |
|
|
/** */ |
15 |
|
|
/** FileX Component */ |
16 |
|
|
/** */ |
17 |
|
|
/** Unicode */ |
18 |
|
|
/** */ |
19 |
|
|
/**************************************************************************/ |
20 |
|
|
/**************************************************************************/ |
21 |
|
|
|
22 |
|
|
#define FX_SOURCE_CODE |
23 |
|
|
|
24 |
|
|
|
25 |
|
|
/* Include necessary system files. */ |
26 |
|
|
|
27 |
|
|
#include "fx_api.h" |
28 |
|
|
#include "fx_unicode.h" |
29 |
|
|
#include "fx_utility.h" |
30 |
|
|
|
31 |
|
|
#ifndef FX_NO_LOCAL_PATH |
32 |
|
|
FX_LOCAL_PATH_SETUP |
33 |
|
|
#endif |
34 |
|
|
|
35 |
|
|
|
36 |
|
|
/* Define several Unicode working arrays... This keeps the data structures |
37 |
|
|
off the local stack. */ |
38 |
|
|
|
39 |
|
|
UCHAR _fx_unicode_temp_long_file_name[FX_MAX_LONG_NAME_LEN]; |
40 |
|
|
UCHAR _fx_unicode_search_name[FX_MAX_LONG_NAME_LEN * 2]; |
41 |
|
|
|
42 |
|
|
|
43 |
|
|
/**************************************************************************/ |
44 |
|
|
/* */ |
45 |
|
|
/* FUNCTION RELEASE */ |
46 |
|
|
/* */ |
47 |
|
|
/* _fx_unicode_directory_search PORTABLE C */ |
48 |
|
|
/* 6.1 */ |
49 |
|
|
/* AUTHOR */ |
50 |
|
|
/* */ |
51 |
|
|
/* William E. Lamie, Microsoft Corporation */ |
52 |
|
|
/* */ |
53 |
|
|
/* DESCRIPTION */ |
54 |
|
|
/* */ |
55 |
|
|
/* This function searches for the specified unicode or short name. */ |
56 |
|
|
/* */ |
57 |
|
|
/* Note: The buffer of short_name and unicode_name must be valid to */ |
58 |
|
|
/* fill search result. When short_name is a zero length string, search */ |
59 |
|
|
/* is based on unicode string (terminated with NULL). If it's found */ |
60 |
|
|
/* the short name is written back to buffer of short_name. In this case*/ |
61 |
|
|
/* unicode_name_buffer_length is ignored and short_name_buffer_length */ |
62 |
|
|
/* must not be zero to specify the buffer length. If buffer is too */ |
63 |
|
|
/* smallfor the result, overflow characters and NULL-terminator are cut*/ |
64 |
|
|
/* off. When short_name is a valid string, search is based on */ |
65 |
|
|
/* short_name (terminated with NULL). If it's found the unicode name is*/ |
66 |
|
|
/* written back to buffer of unicode_name. In this case */ |
67 |
|
|
/* short_name_buffer_length is ignored and unicode_name_buffer_length */ |
68 |
|
|
/* must not be zero to specify the unicode buffer length. If buffer is */ |
69 |
|
|
/* too small for the result, overflow characters are cut off but */ |
70 |
|
|
/* NULL-terminator is kept. */ |
71 |
|
|
/* */ |
72 |
|
|
/* INPUT */ |
73 |
|
|
/* */ |
74 |
|
|
/* media_ptr Pointer to media */ |
75 |
|
|
/* short_name Pointer to short name */ |
76 |
|
|
/* short_name_buffer_length Buffer length for short name */ |
77 |
|
|
/* unicode_name Pointer to Unicode name */ |
78 |
|
|
/* unicode_name_length Unicode name length */ |
79 |
|
|
/* unicode_name_buffer_length Buffer length for Unicode name*/ |
80 |
|
|
/* */ |
81 |
|
|
/* OUTPUT */ |
82 |
|
|
/* */ |
83 |
|
|
/* Completion Status */ |
84 |
|
|
/* */ |
85 |
|
|
/* CALLS */ |
86 |
|
|
/* */ |
87 |
|
|
/* _fx_unicode_directory_entry_read Read a full unicode directory */ |
88 |
|
|
/* entry */ |
89 |
|
|
/* _fx_utility_FAT_entry_read Read a FAT entry */ |
90 |
|
|
/* */ |
91 |
|
|
/* CALLED BY */ |
92 |
|
|
/* */ |
93 |
|
|
/* Unicode Utilities */ |
94 |
|
|
/* */ |
95 |
|
|
/* RELEASE HISTORY */ |
96 |
|
|
/* */ |
97 |
|
|
/* DATE NAME DESCRIPTION */ |
98 |
|
|
/* */ |
99 |
|
|
/* 05-19-2020 William E. Lamie Initial Version 6.0 */ |
100 |
|
|
/* 09-30-2020 William E. Lamie Modified comment(s), */ |
101 |
|
|
/* resulting in version 6.1 */ |
102 |
|
|
/* */ |
103 |
|
|
/**************************************************************************/ |
104 |
|
644 |
UINT _fx_unicode_directory_search(FX_MEDIA *media_ptr, FX_DIR_ENTRY *entry_ptr, |
105 |
|
|
UCHAR *short_name, ULONG short_name_buffer_length, |
106 |
|
|
UCHAR *unicode_name, ULONG *unicode_name_length, ULONG unicode_name_buffer_length) |
107 |
|
|
{ |
108 |
|
|
|
109 |
|
|
ULONG i, j; |
110 |
|
|
UINT status, found; |
111 |
|
644 |
ULONG cluster, next_cluster = 0; |
112 |
|
|
ULONG directory_size; |
113 |
|
|
FX_DIR_ENTRY search_dir; |
114 |
|
|
FX_DIR_ENTRY *search_dir_ptr; |
115 |
|
|
ULONG unicode_search_length; |
116 |
|
|
ULONG local_unicode_name_length; |
117 |
|
|
CHAR unicode_to_short_name[13]; |
118 |
|
|
CHAR *short_name_ptr; |
119 |
|
|
|
120 |
|
|
|
121 |
|
|
/* Setup temp unicode name length. */ |
122 |
|
644 |
local_unicode_name_length = *unicode_name_length; |
123 |
|
|
|
124 |
|
|
#ifndef FX_MEDIA_STATISTICS_DISABLE |
125 |
|
|
|
126 |
|
|
/* Increment the number of directory search requests. */ |
127 |
|
644 |
media_ptr -> fx_media_directory_searches++; |
128 |
|
|
#endif |
129 |
|
|
|
130 |
|
|
/* Set the initial search directory to the current working |
131 |
|
|
directory - if there is one. */ |
132 |
|
|
|
133 |
|
|
/* First check for a local path pointer stored in the thread control block. This |
134 |
|
|
is only available in ThreadX Version 4 and above. */ |
135 |
|
|
#ifndef FX_NO_LOCAL_PATH |
136 |
✓✓ |
644 |
if (_tx_thread_current_ptr -> tx_thread_filex_ptr) |
137 |
|
|
{ |
138 |
|
|
|
139 |
|
|
/* Determine if the local directory is not the root directory. */ |
140 |
✓✓ |
116 |
if (((FX_PATH *)_tx_thread_current_ptr -> tx_thread_filex_ptr) -> fx_path_directory.fx_dir_entry_name[0]) |
141 |
|
|
{ |
142 |
|
|
|
143 |
|
|
/* Start at the current working directory of the media. */ |
144 |
|
96 |
search_dir = ((FX_PATH *)_tx_thread_current_ptr -> tx_thread_filex_ptr) -> fx_path_directory; |
145 |
|
|
|
146 |
|
|
/* Set the internal pointer to the search directory as well. */ |
147 |
|
96 |
search_dir_ptr = &search_dir; |
148 |
|
|
} |
149 |
|
|
else |
150 |
|
|
{ |
151 |
|
|
|
152 |
|
|
/* We are searching in the root directory. */ |
153 |
|
20 |
search_dir_ptr = FX_NULL; |
154 |
|
|
} |
155 |
|
|
} |
156 |
|
|
else |
157 |
|
|
#endif |
158 |
✓✓ |
528 |
if (media_ptr -> fx_media_default_path.fx_path_directory.fx_dir_entry_name[0]) |
159 |
|
|
{ |
160 |
|
|
|
161 |
|
|
/* Start at the current working directory of the media. */ |
162 |
|
12 |
search_dir = media_ptr -> fx_media_default_path.fx_path_directory; |
163 |
|
|
|
164 |
|
|
/* Set the internal pointer to the search directory as well. */ |
165 |
|
12 |
search_dir_ptr = &search_dir; |
166 |
|
|
} |
167 |
|
|
else |
168 |
|
|
{ |
169 |
|
|
|
170 |
|
|
/* The current default directory is the root so just set the |
171 |
|
|
search directory pointer to NULL. */ |
172 |
|
516 |
search_dir_ptr = FX_NULL; |
173 |
|
|
} |
174 |
|
|
|
175 |
|
|
/* Calculate the directory size. */ |
176 |
✓✓ |
644 |
if (search_dir_ptr) |
177 |
|
|
{ |
178 |
|
|
|
179 |
|
|
/* Ensure that the search directory's last search cluster is cleared. */ |
180 |
|
108 |
search_dir_ptr -> fx_dir_entry_last_search_cluster = 0; |
181 |
|
|
|
182 |
|
|
/* Calculate the directory size by counting the allocated |
183 |
|
|
clusters for it. */ |
184 |
|
108 |
i = 0; |
185 |
|
108 |
cluster = search_dir_ptr -> fx_dir_entry_cluster; |
186 |
✓✓✓✓
|
9327 |
while ((cluster >= FX_FAT_ENTRY_START) && (cluster < media_ptr -> fx_media_fat_reserved)) |
187 |
|
|
{ |
188 |
|
|
|
189 |
|
|
/* Increment the cluster count. */ |
190 |
|
9222 |
i++; |
191 |
|
|
|
192 |
|
|
/* Read the next FAT entry. */ |
193 |
|
9222 |
status = _fx_utility_FAT_entry_read(media_ptr, cluster, &next_cluster); |
194 |
|
|
|
195 |
|
|
/* Check the return status. */ |
196 |
✓✓ |
9222 |
if (status != FX_SUCCESS) |
197 |
|
|
{ |
198 |
|
|
|
199 |
|
|
/* Return the bad status. */ |
200 |
|
1 |
return(status); |
201 |
|
|
} |
202 |
|
|
|
203 |
|
|
/* Check for error situation. */ |
204 |
✓✓✓✓
|
9221 |
if ((cluster == next_cluster) || (i > media_ptr -> fx_media_total_clusters)) |
205 |
|
|
{ |
206 |
|
|
|
207 |
|
|
/* Return the bad status. */ |
208 |
|
2 |
return(FX_FAT_READ_ERROR); |
209 |
|
|
} |
210 |
|
|
|
211 |
|
9219 |
cluster = next_cluster; |
212 |
|
|
} |
213 |
|
|
|
214 |
|
|
/* Now we can calculate the directory size. */ |
215 |
|
105 |
directory_size = (((ULONG)media_ptr -> fx_media_bytes_per_sector) * |
216 |
|
105 |
((ULONG)media_ptr -> fx_media_sectors_per_cluster) * i) / |
217 |
|
|
(ULONG)FX_DIR_ENTRY_SIZE; |
218 |
|
|
|
219 |
|
|
/* Also save this in the directory entry so we don't have to |
220 |
|
|
calculate it later. */ |
221 |
|
105 |
search_dir_ptr -> fx_dir_entry_file_size = directory_size; |
222 |
|
|
} |
223 |
|
|
else |
224 |
|
|
{ |
225 |
|
|
|
226 |
|
|
/* Directory size is the number of entries in the root directory. */ |
227 |
|
536 |
directory_size = (ULONG)media_ptr -> fx_media_root_directory_entries; |
228 |
|
|
} |
229 |
|
|
|
230 |
|
|
/* Determine if we are searching for a short file name or a unicode file name. */ |
231 |
✓✓ |
641 |
if (short_name[0] == 0) |
232 |
|
|
{ |
233 |
|
|
|
234 |
|
|
/* If the unicode name fit into short name length, covert the Unicode to ASCII if possible. */ |
235 |
✓✓ |
629 |
if (local_unicode_name_length <= 13) |
236 |
|
|
{ |
237 |
✓✓ |
1621 |
for (j = 0; j < local_unicode_name_length; j++) |
238 |
|
|
{ |
239 |
✓✓✓✓
|
1312 |
if ((unicode_name[j * 2] <= 0x7F) && (unicode_name[j * 2 + 1] == 0)) |
240 |
|
|
{ |
241 |
|
|
|
242 |
|
1139 |
unicode_to_short_name[j] = (CHAR)unicode_name[j * 2]; |
243 |
✓✓✓✓
|
1139 |
if ((unicode_to_short_name[j] >= 'a') && (unicode_to_short_name[j] <= 'z')) |
244 |
|
|
{ |
245 |
|
|
|
246 |
|
|
/* Lower case, convert to upper case! */ |
247 |
|
601 |
unicode_to_short_name[j] = (CHAR)((INT)unicode_to_short_name[j] - 0x20); |
248 |
|
|
} |
249 |
|
|
} |
250 |
|
|
else |
251 |
|
|
{ |
252 |
|
173 |
unicode_to_short_name[0] = 0; |
253 |
|
173 |
break; |
254 |
|
|
} |
255 |
|
|
} |
256 |
|
|
} |
257 |
|
|
else |
258 |
|
|
{ |
259 |
|
147 |
unicode_to_short_name[0] = 0; |
260 |
|
|
} |
261 |
|
|
} |
262 |
|
|
else |
263 |
|
|
{ |
264 |
|
12 |
unicode_to_short_name[0] = 0; |
265 |
|
|
} |
266 |
|
|
|
267 |
|
|
/* Loop through entries in the directory. Yes, this is a |
268 |
|
|
linear search! */ |
269 |
|
641 |
i = 0; |
270 |
|
|
do |
271 |
|
|
{ |
272 |
|
|
|
273 |
|
|
/* Read an entry from the directory. */ |
274 |
|
8551 |
status = _fx_unicode_directory_entry_read(media_ptr, search_dir_ptr, &i, entry_ptr, &_fx_unicode_search_name[0], &unicode_search_length); |
275 |
|
8551 |
i++; |
276 |
|
|
|
277 |
|
|
/* Check for error status. */ |
278 |
✓✓ |
8551 |
if (status != FX_SUCCESS) |
279 |
|
|
{ |
280 |
|
14 |
return(status); |
281 |
|
|
} |
282 |
|
|
|
283 |
|
|
/* Determine if this is an empty entry. */ |
284 |
✓✓✓✓
|
8537 |
if (((UCHAR)entry_ptr -> fx_dir_entry_name[0] == (UCHAR)FX_DIR_ENTRY_FREE) && (entry_ptr -> fx_dir_entry_short_name[0] == 0)) |
285 |
|
|
{ |
286 |
|
277 |
continue; |
287 |
|
|
} |
288 |
|
|
|
289 |
|
|
/* Determine if this is the last directory entry. */ |
290 |
✓✓ |
8260 |
if ((UCHAR)entry_ptr -> fx_dir_entry_name[0] == (UCHAR)FX_DIR_ENTRY_DONE) |
291 |
|
|
{ |
292 |
|
356 |
break; |
293 |
|
|
} |
294 |
|
|
|
295 |
|
|
/* Determine if there is a short name to match. */ |
296 |
✓✓ |
7904 |
if (unicode_to_short_name[0]) |
297 |
|
|
{ |
298 |
|
|
|
299 |
|
|
/* Get the short name pointer. */ |
300 |
✓✓ |
2483 |
if (entry_ptr -> fx_dir_entry_short_name[0]) |
301 |
|
|
{ |
302 |
|
2280 |
short_name_ptr = entry_ptr -> fx_dir_entry_short_name; |
303 |
|
|
} |
304 |
|
|
else |
305 |
|
|
{ |
306 |
|
203 |
short_name_ptr = entry_ptr -> fx_dir_entry_name; |
307 |
|
|
} |
308 |
|
|
|
309 |
✓✓ |
2596 |
for (j = 0; j < local_unicode_name_length; j++) |
310 |
|
|
{ |
311 |
|
|
|
312 |
|
|
/* Compare characters. */ |
313 |
✓✓ |
2593 |
if (short_name_ptr[j] != unicode_to_short_name[j]) |
314 |
|
|
{ |
315 |
|
2480 |
break; |
316 |
|
|
} |
317 |
|
|
} |
318 |
✓✓ |
2483 |
if (j == local_unicode_name_length) |
319 |
|
|
{ |
320 |
|
|
|
321 |
|
|
/* Only the 1st 13 bytes or the buffer length is copied, whichever is smaller. */ |
322 |
✓✓ |
3 |
if (short_name_buffer_length > 13) |
323 |
|
|
{ |
324 |
|
1 |
short_name_buffer_length = 13; |
325 |
|
|
} |
326 |
|
|
|
327 |
|
|
/* The names match, copy the short name into the destination. */ |
328 |
✓✓ |
42 |
for (j = 0; j < short_name_buffer_length; j++) |
329 |
|
|
{ |
330 |
|
39 |
short_name[j] = (UCHAR)short_name_ptr[j]; |
331 |
|
|
} |
332 |
|
|
|
333 |
|
|
/* Return success to caller. */ |
334 |
|
3 |
return(FX_SUCCESS); |
335 |
|
|
} |
336 |
|
|
} |
337 |
|
|
|
338 |
|
|
/* Determine if this is not a unicode name. */ |
339 |
✓✓ |
7901 |
if (unicode_search_length == 0) |
340 |
|
|
{ |
341 |
|
250 |
continue; |
342 |
|
|
} |
343 |
|
|
|
344 |
|
|
/* Determine if we are searching for a short file name or a unicode file name. */ |
345 |
✓✓ |
7651 |
if (short_name[0]) |
346 |
|
|
{ |
347 |
|
|
|
348 |
|
|
/* We have a short name and need a unicode name. Compare the short name against the short name in |
349 |
|
|
the directory entry for a match. */ |
350 |
|
36 |
found = FX_TRUE; |
351 |
✓✓ |
121 |
for (j = 0; j < 12; j++) |
352 |
|
|
{ |
353 |
|
|
|
354 |
|
|
/* Compare characters... */ |
355 |
✓✓ |
119 |
if (entry_ptr -> fx_dir_entry_short_name[0]) |
356 |
|
|
{ |
357 |
|
|
|
358 |
|
|
/* Yes, the return name is in the short name field... compare against it! */ |
359 |
✓✓ |
107 |
if (short_name[j] != (UCHAR)entry_ptr -> fx_dir_entry_short_name[j]) |
360 |
|
|
{ |
361 |
|
|
|
362 |
|
20 |
found = FX_FALSE; |
363 |
|
20 |
break; |
364 |
|
|
} |
365 |
|
|
} |
366 |
|
|
else |
367 |
|
|
{ |
368 |
|
|
|
369 |
|
|
/* No, the return name is in the name field... compare against it! */ |
370 |
✓✓ |
12 |
if (short_name[j] != (UCHAR)entry_ptr -> fx_dir_entry_name[j]) |
371 |
|
|
{ |
372 |
|
|
|
373 |
|
6 |
found = FX_FALSE; |
374 |
|
6 |
break; |
375 |
|
|
} |
376 |
|
|
} |
377 |
|
|
|
378 |
|
|
/* Are we done? */ |
379 |
✓✓ |
93 |
if (short_name[j] == (UCHAR)FX_NULL) |
380 |
|
|
{ |
381 |
|
8 |
break; |
382 |
|
|
} |
383 |
|
|
} |
384 |
|
|
|
385 |
|
|
/* One final compare to see if we have a match. */ |
386 |
✓✓✓✓
✓✓ |
36 |
if ((found == FX_FALSE) || ((j == 12) && (short_name[12] != 0))) |
387 |
|
|
{ |
388 |
|
27 |
continue; |
389 |
|
|
} |
390 |
|
|
|
391 |
|
|
/* A match was found so copy the unicode name and length and return. */ |
392 |
|
|
/* Copy the length. */ |
393 |
|
9 |
*unicode_name_length = unicode_search_length; |
394 |
|
|
|
395 |
|
|
/* Check if the name fit in the buffer. */ |
396 |
✓✓ |
9 |
if (unicode_name_buffer_length < (unicode_search_length + 1) * 2) |
397 |
|
|
{ |
398 |
|
1 |
unicode_search_length = (unicode_name_buffer_length - 2) / 2; |
399 |
|
|
} |
400 |
|
|
|
401 |
|
|
/* Copy the unicode name. */ |
402 |
✓✓ |
107 |
for (j = 0; j < unicode_search_length * 2; j++) |
403 |
|
|
{ |
404 |
|
|
|
405 |
|
|
/* Copy one unicode character to the destination... */ |
406 |
|
98 |
unicode_name[j] = _fx_unicode_search_name[j]; |
407 |
|
|
} |
408 |
|
|
|
409 |
|
|
/* Make sure there is a NULL in the destination. */ |
410 |
|
9 |
unicode_name[j] = (UCHAR)0; |
411 |
|
9 |
unicode_name[j + 1] = (UCHAR)0; |
412 |
|
|
|
413 |
|
|
|
414 |
|
|
|
415 |
|
|
/* Return successful completion. */ |
416 |
|
9 |
return(FX_SUCCESS); |
417 |
|
|
} |
418 |
|
|
else |
419 |
|
|
{ |
420 |
|
|
|
421 |
|
|
/* Determine if this is the correct unicode name. */ |
422 |
✓✓ |
7615 |
if (unicode_search_length != local_unicode_name_length) |
423 |
|
|
{ |
424 |
|
1551 |
continue; |
425 |
|
|
} |
426 |
|
|
|
427 |
|
|
/* Compare the unicode search name with the requested unicode name. */ |
428 |
✓✓ |
6837 |
for (j = 0; j < (local_unicode_name_length * 2); j = j + 2) |
429 |
|
|
{ |
430 |
|
|
|
431 |
|
|
/* Compare bytes of each unicode name. */ |
432 |
✓✓ |
6682 |
if (unicode_name[j] != _fx_unicode_search_name[j]) |
433 |
|
|
{ |
434 |
|
|
|
435 |
|
|
/* Not match, Check if the character is in ASCII range. */ |
436 |
✓✓✓✓
|
5873 |
if ((_fx_unicode_search_name[j + 1] == 0) && (unicode_name[j + 1] == 0)) |
437 |
|
|
{ |
438 |
|
|
|
439 |
|
|
/* Check if it is case mismatch. */ |
440 |
✓✓✓✓
|
5644 |
if ((unicode_name[j]) >= 'a' && (unicode_name[j] <= 'z')) |
441 |
|
|
{ |
442 |
✓✓ |
1152 |
if ((unicode_name[j] - 0x20) == _fx_unicode_search_name[j]) |
443 |
|
|
{ |
444 |
|
1 |
continue; |
445 |
|
|
} |
446 |
|
|
} |
447 |
✓✓✓✓
|
5643 |
if ((_fx_unicode_search_name[j]) >= 'a' && (_fx_unicode_search_name[j] <= 'z')) |
448 |
|
|
{ |
449 |
✓✓ |
1311 |
if ((_fx_unicode_search_name[j] - 0x20) == unicode_name[j]) |
450 |
|
|
{ |
451 |
|
1 |
continue; |
452 |
|
|
} |
453 |
|
|
} |
454 |
|
|
} |
455 |
|
|
|
456 |
|
5871 |
break; |
457 |
|
|
} |
458 |
|
|
|
459 |
|
|
/* Compare the next byte. */ |
460 |
✓✓ |
809 |
if (unicode_name[j + 1] != _fx_unicode_search_name[j + 1]) |
461 |
|
|
{ |
462 |
|
38 |
break; |
463 |
|
|
} |
464 |
|
|
} |
465 |
|
|
|
466 |
|
|
/* Determine if the names do not match. */ |
467 |
✓✓ |
6064 |
if (j != (local_unicode_name_length * 2)) |
468 |
|
|
{ |
469 |
|
5909 |
continue; |
470 |
|
|
} |
471 |
|
|
|
472 |
|
|
/* Otherwise, the names match, copy the short name into the destination. */ |
473 |
|
|
/* Only the 1st 13 bytes or the buffer length is copied, whichever is smaller. */ |
474 |
✓✓ |
155 |
if (short_name_buffer_length > 13) |
475 |
|
|
{ |
476 |
|
1 |
short_name_buffer_length = 13; |
477 |
|
|
} |
478 |
✓✓ |
2170 |
for (j = 0; j < short_name_buffer_length; j++) |
479 |
|
|
{ |
480 |
|
|
|
481 |
|
|
/* Copy a character. */ |
482 |
✓✓ |
2015 |
if (entry_ptr -> fx_dir_entry_short_name[0]) |
483 |
|
|
{ |
484 |
|
1521 |
short_name[j] = (UCHAR)entry_ptr -> fx_dir_entry_short_name[j]; |
485 |
|
|
} |
486 |
|
|
else |
487 |
|
|
{ |
488 |
|
494 |
short_name[j] = (UCHAR)entry_ptr -> fx_dir_entry_name[j]; |
489 |
|
|
} |
490 |
|
|
} |
491 |
|
|
|
492 |
|
|
/* Return success to caller. */ |
493 |
|
155 |
return(FX_SUCCESS); |
494 |
|
|
} |
495 |
✓✓ |
8014 |
} while (i < directory_size); |
496 |
|
|
|
497 |
|
|
/* Return not found. */ |
498 |
|
460 |
return(FX_NOT_FOUND); |
499 |
|
|
} |
500 |
|
|
|