/src/libvshadow/libcfile/libcfile_file.c
Line | Count | Source |
1 | | /* |
2 | | * File functions |
3 | | * |
4 | | * Copyright (C) 2008-2026, Joachim Metz <joachim.metz@gmail.com> |
5 | | * |
6 | | * Refer to AUTHORS for acknowledgements. |
7 | | * |
8 | | * This program is free software: you can redistribute it and/or modify |
9 | | * it under the terms of the GNU Lesser General Public License as published by |
10 | | * the Free Software Foundation, either version 3 of the License, or |
11 | | * (at your option) any later version. |
12 | | * |
13 | | * This program is distributed in the hope that it will be useful, |
14 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | | * GNU General Public License for more details. |
17 | | * |
18 | | * You should have received a copy of the GNU Lesser General Public License |
19 | | * along with this program. If not, see <https://www.gnu.org/licenses/>. |
20 | | */ |
21 | | |
22 | | #include <common.h> |
23 | | #include <memory.h> |
24 | | #include <narrow_string.h> |
25 | | #include <system_string.h> |
26 | | #include <types.h> |
27 | | #include <wide_string.h> |
28 | | |
29 | | #if defined( HAVE_SYS_STAT_H ) |
30 | | #include <sys/stat.h> |
31 | | #endif |
32 | | |
33 | | #if defined( HAVE_ERRNO_H ) |
34 | | #include <errno.h> |
35 | | #endif |
36 | | |
37 | | #if defined( HAVE_FCNTL_H ) |
38 | | #include <fcntl.h> |
39 | | #endif |
40 | | |
41 | | #if defined( WINAPI ) |
42 | | #include <io.h> |
43 | | #endif |
44 | | |
45 | | #if defined( WINAPI ) && !defined( __CYGWIN__ ) |
46 | | #include <share.h> |
47 | | #endif |
48 | | |
49 | | #if defined( HAVE_SYS_IOCTL_H ) |
50 | | #include <sys/ioctl.h> |
51 | | #endif |
52 | | |
53 | | #if defined( WINAPI ) |
54 | | #include <winioctl.h> |
55 | | |
56 | | #elif defined( HAVE_CYGWIN_FS_H ) |
57 | | #include <cygwin/fs.h> |
58 | | |
59 | | #elif defined( HAVE_LINUX_FS_H ) |
60 | | /* Required for Linux platforms that use a sizeof( u64 ) |
61 | | * in linux/fs.h but have no typedef of it |
62 | | */ |
63 | | #if !defined( HAVE_U64 ) |
64 | | typedef size_t u64; |
65 | | #endif |
66 | | |
67 | | #include <linux/fs.h> |
68 | | |
69 | | #else |
70 | | |
71 | | #if defined( HAVE_SYS_DISK_H ) |
72 | | #include <sys/disk.h> |
73 | | #endif |
74 | | |
75 | | #if defined( HAVE_SYS_DISKLABEL_H ) |
76 | | #include <sys/disklabel.h> |
77 | | #endif |
78 | | |
79 | | #endif |
80 | | |
81 | | #if defined( HAVE_UNISTD_H ) |
82 | | #include <unistd.h> |
83 | | #endif |
84 | | |
85 | | #if defined( HAVE_GLIB_H ) |
86 | | #include <glib.h> |
87 | | #include <glib/gstdio.h> |
88 | | #endif |
89 | | |
90 | | #include "libcfile_definitions.h" |
91 | | #include "libcfile_file.h" |
92 | | #include "libcfile_libcerror.h" |
93 | | #include "libcfile_libcnotify.h" |
94 | | #include "libcfile_system_string.h" |
95 | | #include "libcfile_types.h" |
96 | | #include "libcfile_winapi.h" |
97 | | |
98 | | /* Creates a file |
99 | | * Make sure the value file is referencing, is set to NULL |
100 | | * Returns 1 if successful or -1 on error |
101 | | */ |
102 | | int libcfile_file_initialize( |
103 | | libcfile_file_t **file, |
104 | | libcerror_error_t **error ) |
105 | 0 | { |
106 | 0 | libcfile_internal_file_t *internal_file = NULL; |
107 | 0 | static char *function = "libcfile_file_initialize"; |
108 | |
|
109 | 0 | if( file == NULL ) |
110 | 0 | { |
111 | 0 | libcerror_error_set( |
112 | 0 | error, |
113 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
114 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
115 | 0 | "%s: invalid file.", |
116 | 0 | function ); |
117 | |
|
118 | 0 | return( -1 ); |
119 | 0 | } |
120 | 0 | if( *file != NULL ) |
121 | 0 | { |
122 | 0 | libcerror_error_set( |
123 | 0 | error, |
124 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
125 | 0 | LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET, |
126 | 0 | "%s: invalid file value already set.", |
127 | 0 | function ); |
128 | |
|
129 | 0 | return( -1 ); |
130 | 0 | } |
131 | 0 | internal_file = memory_allocate_structure( |
132 | 0 | libcfile_internal_file_t ); |
133 | |
|
134 | 0 | if( internal_file == NULL ) |
135 | 0 | { |
136 | 0 | libcerror_error_set( |
137 | 0 | error, |
138 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
139 | 0 | LIBCERROR_MEMORY_ERROR_INSUFFICIENT, |
140 | 0 | "%s: unable to create file.", |
141 | 0 | function ); |
142 | |
|
143 | 0 | goto on_error; |
144 | 0 | } |
145 | 0 | if( memory_set( |
146 | 0 | internal_file, |
147 | 0 | 0, |
148 | 0 | sizeof( libcfile_internal_file_t ) ) == NULL ) |
149 | 0 | { |
150 | 0 | libcerror_error_set( |
151 | 0 | error, |
152 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
153 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
154 | 0 | "%s: unable to clear file.", |
155 | 0 | function ); |
156 | |
|
157 | 0 | goto on_error; |
158 | 0 | } |
159 | | #if defined( WINAPI ) |
160 | | internal_file->handle = INVALID_HANDLE_VALUE; |
161 | | #else |
162 | 0 | internal_file->descriptor = -1; |
163 | 0 | #endif |
164 | 0 | *file = (libcfile_file_t *) internal_file; |
165 | |
|
166 | 0 | return( 1 ); |
167 | | |
168 | 0 | on_error: |
169 | 0 | if( internal_file != NULL ) |
170 | 0 | { |
171 | 0 | memory_free( |
172 | 0 | internal_file ); |
173 | 0 | } |
174 | 0 | return( -1 ); |
175 | 0 | } |
176 | | |
177 | | /* Frees a file |
178 | | * Returns 1 if successful or -1 on error |
179 | | */ |
180 | | int libcfile_file_free( |
181 | | libcfile_file_t **file, |
182 | | libcerror_error_t **error ) |
183 | 0 | { |
184 | 0 | libcfile_internal_file_t *internal_file = NULL; |
185 | 0 | static char *function = "libcfile_file_free"; |
186 | 0 | int result = 1; |
187 | |
|
188 | 0 | if( file == NULL ) |
189 | 0 | { |
190 | 0 | libcerror_error_set( |
191 | 0 | error, |
192 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
193 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
194 | 0 | "%s: invalid file.", |
195 | 0 | function ); |
196 | |
|
197 | 0 | return( -1 ); |
198 | 0 | } |
199 | 0 | if( *file != NULL ) |
200 | 0 | { |
201 | 0 | internal_file = (libcfile_internal_file_t *) *file; |
202 | |
|
203 | | #if defined( WINAPI ) |
204 | | if( internal_file->handle != INVALID_HANDLE_VALUE ) |
205 | | #else |
206 | 0 | if( internal_file->descriptor != -1 ) |
207 | 0 | #endif |
208 | 0 | { |
209 | 0 | if( libcfile_file_close( |
210 | 0 | *file, |
211 | 0 | error ) != 0 ) |
212 | 0 | { |
213 | 0 | libcerror_error_set( |
214 | 0 | error, |
215 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
216 | 0 | LIBCERROR_IO_ERROR_CLOSE_FAILED, |
217 | 0 | "%s: unable to close file.", |
218 | 0 | function ); |
219 | |
|
220 | 0 | result = -1; |
221 | 0 | } |
222 | 0 | } |
223 | 0 | *file = NULL; |
224 | |
|
225 | 0 | memory_free( |
226 | 0 | internal_file ); |
227 | 0 | } |
228 | 0 | return( result ); |
229 | 0 | } |
230 | | |
231 | | /* Opens a file |
232 | | * Returns 1 if successful or -1 on error |
233 | | */ |
234 | | int libcfile_file_open( |
235 | | libcfile_file_t *file, |
236 | | const char *filename, |
237 | | int access_flags, |
238 | | libcerror_error_t **error ) |
239 | 0 | { |
240 | 0 | static char *function = "libcfile_file_open"; |
241 | 0 | uint32_t error_code = 0; |
242 | |
|
243 | 0 | if( libcfile_file_open_with_error_code( |
244 | 0 | file, |
245 | 0 | filename, |
246 | 0 | access_flags, |
247 | 0 | &error_code, |
248 | 0 | error ) != 1 ) |
249 | 0 | { |
250 | 0 | libcerror_error_set( |
251 | 0 | error, |
252 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
253 | 0 | LIBCERROR_IO_ERROR_OPEN_FAILED, |
254 | 0 | "%s: unable to open file.", |
255 | 0 | function ); |
256 | |
|
257 | 0 | return( -1 ); |
258 | 0 | } |
259 | 0 | return( 1 ); |
260 | 0 | } |
261 | | |
262 | | #if defined( WINAPI ) |
263 | | |
264 | | #if ( WINVER >= 0x0600 ) && ( WINVER < 0x0602 ) |
265 | | |
266 | | #define FileAlignmentInfo 0x11 |
267 | | |
268 | | typedef struct _FILE_ALIGNMENT_INFO FILE_ALIGNMENT_INFO; |
269 | | |
270 | | struct _FILE_ALIGNMENT_INFO { |
271 | | ULONG AlignmentRequirement; |
272 | | }; |
273 | | |
274 | | #endif /* ( WINVER >= 0x0600 ) && ( WINVER < 0x0602 ) */ |
275 | | |
276 | | /* Opens a file |
277 | | * This function uses the WINAPI function for Windows XP (0x0501) or later, |
278 | | * or tries to dynamically call the function for Windows 2000 (0x0500) or earlier |
279 | | * Returns 1 if successful or -1 on error |
280 | | */ |
281 | | int libcfile_file_open_with_error_code( |
282 | | libcfile_file_t *file, |
283 | | const char *filename, |
284 | | int access_flags, |
285 | | uint32_t *error_code, |
286 | | libcerror_error_t **error ) |
287 | | { |
288 | | #if ( WINVER >= 0x0600 ) |
289 | | FILE_ALIGNMENT_INFO file_alignment_information; |
290 | | #else |
291 | | DISK_GEOMETRY_EX disk_geometry; |
292 | | |
293 | | DWORD response_count = 0; |
294 | | #endif |
295 | | |
296 | | libcfile_internal_file_t *internal_file = NULL; |
297 | | static char *function = "libcfile_file_open_with_error_code"; |
298 | | BOOL result = 0; |
299 | | DWORD file_io_access_flags = 0; |
300 | | DWORD file_io_creation_flags = 0; |
301 | | DWORD file_io_shared_flags = 0; |
302 | | DWORD flags_and_attributes = 0; |
303 | | size_t filename_length = 0; |
304 | | size_t sector_size = 0; |
305 | | ssize_t read_count = 0; |
306 | | |
307 | | if( file == NULL ) |
308 | | { |
309 | | libcerror_error_set( |
310 | | error, |
311 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
312 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
313 | | "%s: invalid file.", |
314 | | function ); |
315 | | |
316 | | return( -1 ); |
317 | | } |
318 | | internal_file = (libcfile_internal_file_t *) file; |
319 | | |
320 | | if( internal_file->handle != INVALID_HANDLE_VALUE ) |
321 | | { |
322 | | libcerror_error_set( |
323 | | error, |
324 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
325 | | LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET, |
326 | | "%s: invalid file - handle value already set.", |
327 | | function ); |
328 | | |
329 | | return( -1 ); |
330 | | } |
331 | | if( filename == NULL ) |
332 | | { |
333 | | libcerror_error_set( |
334 | | error, |
335 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
336 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
337 | | "%s: invalid filename.", |
338 | | function ); |
339 | | |
340 | | return( -1 ); |
341 | | } |
342 | | if( ( ( access_flags & LIBCFILE_ACCESS_FLAG_READ ) != 0 ) |
343 | | && ( ( access_flags & LIBCFILE_ACCESS_FLAG_WRITE ) != 0 ) ) |
344 | | { |
345 | | file_io_access_flags = GENERIC_WRITE | GENERIC_READ; |
346 | | file_io_creation_flags = OPEN_ALWAYS; |
347 | | file_io_shared_flags = FILE_SHARE_READ; |
348 | | } |
349 | | else if( ( access_flags & LIBCFILE_ACCESS_FLAG_READ ) != 0 ) |
350 | | { |
351 | | file_io_access_flags = GENERIC_READ; |
352 | | file_io_creation_flags = OPEN_EXISTING; |
353 | | |
354 | | /* FILE_SHARE_WRITE is set to allow reading files that are |
355 | | * currently being written FILE_SHARE_READ alone does not suffice |
356 | | */ |
357 | | file_io_shared_flags = FILE_SHARE_READ | FILE_SHARE_WRITE; |
358 | | } |
359 | | else if( ( access_flags & LIBCFILE_ACCESS_FLAG_WRITE ) != 0 ) |
360 | | { |
361 | | file_io_access_flags = GENERIC_WRITE; |
362 | | file_io_creation_flags = OPEN_ALWAYS; |
363 | | file_io_shared_flags = FILE_SHARE_READ; |
364 | | } |
365 | | else |
366 | | { |
367 | | libcerror_error_set( |
368 | | error, |
369 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
370 | | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
371 | | "%s: unsupported access flags: 0x%02x.", |
372 | | function, |
373 | | access_flags ); |
374 | | |
375 | | return( -1 ); |
376 | | } |
377 | | if( ( ( access_flags & LIBCFILE_ACCESS_FLAG_WRITE ) != 0 ) |
378 | | && ( ( access_flags & LIBCFILE_ACCESS_FLAG_TRUNCATE ) != 0 ) ) |
379 | | { |
380 | | file_io_creation_flags = CREATE_ALWAYS; |
381 | | } |
382 | | if( error_code == NULL ) |
383 | | { |
384 | | libcerror_error_set( |
385 | | error, |
386 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
387 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
388 | | "%s: invalid error code.", |
389 | | function ); |
390 | | |
391 | | return( -1 ); |
392 | | } |
393 | | filename_length = narrow_string_length( |
394 | | filename ); |
395 | | |
396 | | if( filename_length > 4 ) |
397 | | { |
398 | | if( ( filename[ 0 ] == '\\' ) |
399 | | && ( filename[ 1 ] == '\\' ) |
400 | | && ( filename[ 2 ] == '.' ) |
401 | | && ( filename[ 3 ] == '\\' ) ) |
402 | | { |
403 | | /* Ignore \\.\F:\ which is an alternative notation for F: |
404 | | */ |
405 | | if( ( filename_length < 7 ) |
406 | | || ( filename[ 5 ] != ':' ) |
407 | | || ( filename[ 6 ] != '\\' ) ) |
408 | | { |
409 | | internal_file->is_device_filename = 1; |
410 | | internal_file->use_asynchronous_io = 1; |
411 | | } |
412 | | } |
413 | | } |
414 | | flags_and_attributes = FILE_ATTRIBUTE_NORMAL; |
415 | | |
416 | | if( internal_file->use_asynchronous_io != 0 ) |
417 | | { |
418 | | flags_and_attributes |= FILE_FLAG_OVERLAPPED; |
419 | | } |
420 | | #if ( WINVER <= 0x0500 ) |
421 | | internal_file->handle = libcfile_CreateFileA( |
422 | | (LPCSTR) filename, |
423 | | file_io_access_flags, |
424 | | file_io_shared_flags, |
425 | | NULL, |
426 | | file_io_creation_flags, |
427 | | flags_and_attributes, |
428 | | NULL ); |
429 | | #else |
430 | | internal_file->handle = CreateFileA( |
431 | | (LPCSTR) filename, |
432 | | file_io_access_flags, |
433 | | file_io_shared_flags, |
434 | | NULL, |
435 | | file_io_creation_flags, |
436 | | flags_and_attributes, |
437 | | NULL ); |
438 | | #endif |
439 | | if( internal_file->handle == INVALID_HANDLE_VALUE ) |
440 | | { |
441 | | *error_code = (uint32_t) GetLastError(); |
442 | | |
443 | | switch( *error_code ) |
444 | | { |
445 | | case ERROR_ACCESS_DENIED: |
446 | | libcerror_error_set( |
447 | | error, |
448 | | LIBCERROR_ERROR_DOMAIN_IO, |
449 | | LIBCERROR_IO_ERROR_ACCESS_DENIED, |
450 | | "%s: access denied to file: %" PRIs_SYSTEM ".", |
451 | | function, |
452 | | filename ); |
453 | | |
454 | | break; |
455 | | |
456 | | case ERROR_FILE_NOT_FOUND: |
457 | | case ERROR_PATH_NOT_FOUND: |
458 | | libcerror_error_set( |
459 | | error, |
460 | | LIBCERROR_ERROR_DOMAIN_IO, |
461 | | LIBCERROR_IO_ERROR_INVALID_RESOURCE, |
462 | | "%s: no such file: %" PRIs_SYSTEM ".", |
463 | | function, |
464 | | filename ); |
465 | | |
466 | | break; |
467 | | |
468 | | default: |
469 | | libcerror_system_set_error( |
470 | | error, |
471 | | LIBCERROR_ERROR_DOMAIN_IO, |
472 | | LIBCERROR_IO_ERROR_OPEN_FAILED, |
473 | | *error_code, |
474 | | "%s: unable to open file: %" PRIs_SYSTEM ".", |
475 | | function, |
476 | | filename ); |
477 | | |
478 | | break; |
479 | | } |
480 | | return( -1 ); |
481 | | } |
482 | | if( internal_file->is_device_filename != 0 ) |
483 | | { |
484 | | read_count = libcfile_internal_file_io_control_read_with_error_code( |
485 | | internal_file, |
486 | | FSCTL_ALLOW_EXTENDED_DASD_IO, |
487 | | NULL, |
488 | | 0, |
489 | | NULL, |
490 | | 0, |
491 | | error_code, |
492 | | error ); |
493 | | |
494 | | if( read_count == -1 ) |
495 | | { |
496 | | libcerror_error_set( |
497 | | error, |
498 | | LIBCERROR_ERROR_DOMAIN_IO, |
499 | | LIBCERROR_IO_ERROR_IOCTL_FAILED, |
500 | | "%s: unable to query device for: FSCTL_ALLOW_EXTENDED_DASD_IO.", |
501 | | function ); |
502 | | |
503 | | #if defined( HAVE_DEBUG_OUTPUT ) |
504 | | if( libcnotify_verbose != 0 ) |
505 | | { |
506 | | if( ( error != NULL ) |
507 | | && ( *error != NULL ) ) |
508 | | { |
509 | | libcnotify_print_error_backtrace( |
510 | | *error ); |
511 | | } |
512 | | } |
513 | | #endif |
514 | | libcerror_error_free( |
515 | | error ); |
516 | | } |
517 | | #if ( WINVER >= 0x0600 ) |
518 | | result = GetFileInformationByHandleEx( |
519 | | internal_file->handle, |
520 | | FileAlignmentInfo, |
521 | | (void *) &file_alignment_information, |
522 | | (DWORD) sizeof( FILE_ALIGNMENT_INFO ) ); |
523 | | |
524 | | if( result == FALSE ) |
525 | | { |
526 | | *error_code = (uint32_t) GetLastError(); |
527 | | |
528 | | libcerror_system_set_error( |
529 | | error, |
530 | | LIBCERROR_ERROR_DOMAIN_IO, |
531 | | LIBCERROR_IO_ERROR_IOCTL_FAILED, |
532 | | *error_code, |
533 | | "%s: unable to retrieve file alignment information.", |
534 | | function ); |
535 | | |
536 | | #if defined( HAVE_DEBUG_OUTPUT ) |
537 | | if( libcnotify_verbose != 0 ) |
538 | | { |
539 | | if( ( error != NULL ) |
540 | | && ( *error != NULL ) ) |
541 | | { |
542 | | libcnotify_print_error_backtrace( |
543 | | *error ); |
544 | | } |
545 | | } |
546 | | #endif |
547 | | libcerror_error_free( |
548 | | error ); |
549 | | } |
550 | | else |
551 | | { |
552 | | if( (size_t) file_alignment_information.AlignmentRequirement >= (size_t) SSIZE_MAX ) |
553 | | { |
554 | | libcerror_error_set( |
555 | | error, |
556 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
557 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
558 | | "%s: invalid file alignment requirement value out of bounds.", |
559 | | function ); |
560 | | |
561 | | return( -1 ); |
562 | | } |
563 | | sector_size = (size_t) file_alignment_information.AlignmentRequirement; |
564 | | } |
565 | | #else |
566 | | result = DeviceIoControl( |
567 | | internal_file->handle, |
568 | | IOCTL_DISK_GET_DRIVE_GEOMETRY_EX, |
569 | | NULL, |
570 | | 0, |
571 | | &disk_geometry, |
572 | | (DWORD) sizeof( DISK_GEOMETRY_EX ), |
573 | | &response_count, |
574 | | NULL ); |
575 | | |
576 | | if( result == FALSE ) |
577 | | { |
578 | | *error_code = (uint32_t) GetLastError(); |
579 | | |
580 | | if( *error_code != ERROR_MORE_DATA ) |
581 | | { |
582 | | libcerror_system_set_error( |
583 | | error, |
584 | | LIBCERROR_ERROR_DOMAIN_IO, |
585 | | LIBCERROR_IO_ERROR_IOCTL_FAILED, |
586 | | *error_code, |
587 | | "%s: unable to retrieve disk geometry.", |
588 | | function ); |
589 | | |
590 | | #if defined( HAVE_DEBUG_OUTPUT ) |
591 | | if( libcnotify_verbose != 0 ) |
592 | | { |
593 | | if( ( error != NULL ) |
594 | | && ( *error != NULL ) ) |
595 | | { |
596 | | libcnotify_print_error_backtrace( |
597 | | *error ); |
598 | | } |
599 | | } |
600 | | #endif |
601 | | libcerror_error_free( |
602 | | error ); |
603 | | } |
604 | | else if( response_count < sizeof( DISK_GEOMETRY_EX ) ) |
605 | | { |
606 | | libcerror_error_set( |
607 | | error, |
608 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
609 | | LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS, |
610 | | "%s: invalid response count value out of bounds.", |
611 | | function ); |
612 | | |
613 | | #if defined( HAVE_DEBUG_OUTPUT ) |
614 | | if( libcnotify_verbose != 0 ) |
615 | | { |
616 | | if( ( error != NULL ) |
617 | | && ( *error != NULL ) ) |
618 | | { |
619 | | libcnotify_print_error_backtrace( |
620 | | *error ); |
621 | | } |
622 | | } |
623 | | #endif |
624 | | libcerror_error_free( |
625 | | error ); |
626 | | } |
627 | | else |
628 | | { |
629 | | result = TRUE; |
630 | | } |
631 | | } |
632 | | if( result == TRUE ) |
633 | | { |
634 | | #if ( SSIZE_MAX < UINT32_MAX ) |
635 | | if( (size_t) disk_geometry.Geometry.BytesPerSector >= (size_t) SSIZE_MAX ) |
636 | | { |
637 | | libcerror_error_set( |
638 | | error, |
639 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
640 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
641 | | "%s: invalid geometry bytes per sector value out of bounds.", |
642 | | function ); |
643 | | |
644 | | return( -1 ); |
645 | | } |
646 | | #endif |
647 | | sector_size = (size_t) disk_geometry.Geometry.BytesPerSector; |
648 | | } |
649 | | #endif /* ( WINVER >= 0x0600 ) */ |
650 | | |
651 | | if( sector_size != 0 ) |
652 | | { |
653 | | if( libcfile_internal_file_set_block_size( |
654 | | internal_file, |
655 | | (size_t) sector_size, |
656 | | error ) != 1 ) |
657 | | { |
658 | | libcerror_error_set( |
659 | | error, |
660 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
661 | | LIBCERROR_RUNTIME_ERROR_SET_FAILED, |
662 | | "%s: unable to set block size.", |
663 | | function ); |
664 | | |
665 | | return( -1 ); |
666 | | } |
667 | | } |
668 | | } |
669 | | if( libcfile_internal_file_get_size( |
670 | | internal_file, |
671 | | &( internal_file->size ), |
672 | | error ) != 1 ) |
673 | | { |
674 | | libcerror_error_set( |
675 | | error, |
676 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
677 | | LIBCERROR_RUNTIME_ERROR_GET_FAILED, |
678 | | "%s: unable to retrieve size.", |
679 | | function ); |
680 | | |
681 | | return( -1 ); |
682 | | } |
683 | | internal_file->access_flags = access_flags; |
684 | | internal_file->current_offset = 0; |
685 | | |
686 | | return( 1 ); |
687 | | } |
688 | | |
689 | | #elif defined( HAVE_OPEN ) |
690 | | |
691 | | /* Opens a file |
692 | | * This function uses the POSIX open function or equivalent |
693 | | * Returns 1 if successful or -1 on error |
694 | | */ |
695 | | int libcfile_file_open_with_error_code( |
696 | | libcfile_file_t *file, |
697 | | const char *filename, |
698 | | int access_flags, |
699 | | uint32_t *error_code, |
700 | | libcerror_error_t **error ) |
701 | 0 | { |
702 | 0 | libcfile_internal_file_t *internal_file = NULL; |
703 | 0 | static char *function = "libcfile_file_open_with_error_code"; |
704 | 0 | int file_io_flags = 0; |
705 | |
|
706 | 0 | if( file == NULL ) |
707 | 0 | { |
708 | 0 | libcerror_error_set( |
709 | 0 | error, |
710 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
711 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
712 | 0 | "%s: invalid file.", |
713 | 0 | function ); |
714 | |
|
715 | 0 | return( -1 ); |
716 | 0 | } |
717 | 0 | internal_file = (libcfile_internal_file_t *) file; |
718 | |
|
719 | 0 | if( internal_file->descriptor != -1 ) |
720 | 0 | { |
721 | 0 | libcerror_error_set( |
722 | 0 | error, |
723 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
724 | 0 | LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET, |
725 | 0 | "%s: invalid file - descriptor value already set.", |
726 | 0 | function ); |
727 | |
|
728 | 0 | return( -1 ); |
729 | 0 | } |
730 | 0 | if( filename == NULL ) |
731 | 0 | { |
732 | 0 | libcerror_error_set( |
733 | 0 | error, |
734 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
735 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
736 | 0 | "%s: invalid filename.", |
737 | 0 | function ); |
738 | |
|
739 | 0 | return( -1 ); |
740 | 0 | } |
741 | 0 | if( ( ( access_flags & LIBCFILE_ACCESS_FLAG_READ ) != 0 ) |
742 | 0 | && ( ( access_flags & LIBCFILE_ACCESS_FLAG_WRITE ) != 0 ) ) |
743 | 0 | { |
744 | 0 | file_io_flags = O_RDWR | O_CREAT; |
745 | 0 | } |
746 | 0 | else if( ( access_flags & LIBCFILE_ACCESS_FLAG_READ ) != 0 ) |
747 | 0 | { |
748 | 0 | file_io_flags = O_RDONLY; |
749 | 0 | } |
750 | 0 | else if( ( access_flags & LIBCFILE_ACCESS_FLAG_WRITE ) != 0 ) |
751 | 0 | { |
752 | 0 | file_io_flags = O_WRONLY | O_CREAT; |
753 | 0 | } |
754 | 0 | else |
755 | 0 | { |
756 | 0 | libcerror_error_set( |
757 | 0 | error, |
758 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
759 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
760 | 0 | "%s: unsupported access flags: 0x%02x.", |
761 | 0 | function, |
762 | 0 | access_flags ); |
763 | |
|
764 | 0 | return( -1 ); |
765 | 0 | } |
766 | 0 | if( ( ( access_flags & LIBCFILE_ACCESS_FLAG_WRITE ) != 0 ) |
767 | 0 | && ( ( access_flags & LIBCFILE_ACCESS_FLAG_TRUNCATE ) != 0 ) ) |
768 | 0 | { |
769 | 0 | file_io_flags |= O_TRUNC; |
770 | 0 | } |
771 | 0 | if( error_code == NULL ) |
772 | 0 | { |
773 | 0 | libcerror_error_set( |
774 | 0 | error, |
775 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
776 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
777 | 0 | "%s: invalid error code.", |
778 | 0 | function ); |
779 | |
|
780 | 0 | return( -1 ); |
781 | 0 | } |
782 | 0 | #if defined( O_CLOEXEC ) |
783 | | /* Prevent the file descriptor to remain open across an execve |
784 | | */ |
785 | 0 | file_io_flags |= O_CLOEXEC; |
786 | 0 | #endif |
787 | | #if defined( HAVE_GLIB_H ) |
788 | | internal_file->descriptor = g_open( |
789 | | filename, |
790 | | file_io_flags, |
791 | | 0644 ); |
792 | | #else |
793 | 0 | internal_file->descriptor = open( |
794 | 0 | filename, |
795 | 0 | file_io_flags, |
796 | 0 | 0644 ); |
797 | 0 | #endif |
798 | 0 | if( internal_file->descriptor == -1 ) |
799 | 0 | { |
800 | 0 | *error_code = (uint32_t) errno; |
801 | |
|
802 | 0 | switch( *error_code ) |
803 | 0 | { |
804 | 0 | case EACCES: |
805 | 0 | libcerror_error_set( |
806 | 0 | error, |
807 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
808 | 0 | LIBCERROR_IO_ERROR_ACCESS_DENIED, |
809 | 0 | "%s: access denied to file: %" PRIs_SYSTEM ".", |
810 | 0 | function, |
811 | 0 | filename ); |
812 | |
|
813 | 0 | break; |
814 | | |
815 | 0 | case ENOENT: |
816 | 0 | libcerror_error_set( |
817 | 0 | error, |
818 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
819 | 0 | LIBCERROR_IO_ERROR_INVALID_RESOURCE, |
820 | 0 | "%s: no such file: %" PRIs_SYSTEM ".", |
821 | 0 | function, |
822 | 0 | filename ); |
823 | |
|
824 | 0 | break; |
825 | | |
826 | 0 | default: |
827 | 0 | libcerror_system_set_error( |
828 | 0 | error, |
829 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
830 | 0 | LIBCERROR_IO_ERROR_OPEN_FAILED, |
831 | 0 | *error_code, |
832 | 0 | "%s: unable to open file: %" PRIs_SYSTEM ".", |
833 | 0 | function, |
834 | 0 | filename ); |
835 | |
|
836 | 0 | break; |
837 | 0 | } |
838 | 0 | return( -1 ); |
839 | 0 | } |
840 | 0 | if( libcfile_internal_file_get_size( |
841 | 0 | internal_file, |
842 | 0 | &( internal_file->size ), |
843 | 0 | error ) != 1 ) |
844 | 0 | { |
845 | 0 | libcerror_error_set( |
846 | 0 | error, |
847 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
848 | 0 | LIBCERROR_RUNTIME_ERROR_GET_FAILED, |
849 | 0 | "%s: unable to retrieve size.", |
850 | 0 | function ); |
851 | |
|
852 | 0 | return( -1 ); |
853 | 0 | } |
854 | 0 | internal_file->access_flags = access_flags; |
855 | 0 | internal_file->current_offset = 0; |
856 | |
|
857 | 0 | return( 1 ); |
858 | 0 | } |
859 | | |
860 | | #else |
861 | | #error Missing file open function |
862 | | #endif |
863 | | |
864 | | #if defined( HAVE_WIDE_CHARACTER_TYPE ) |
865 | | |
866 | | /* Opens a file |
867 | | * Returns 1 if successful or -1 on error |
868 | | */ |
869 | | int libcfile_file_open_wide( |
870 | | libcfile_file_t *file, |
871 | | const wchar_t *filename, |
872 | | int access_flags, |
873 | | libcerror_error_t **error ) |
874 | | { |
875 | | static char *function = "libcfile_file_open_wide"; |
876 | | uint32_t error_code = 0; |
877 | | |
878 | | if( libcfile_file_open_wide_with_error_code( |
879 | | file, |
880 | | filename, |
881 | | access_flags, |
882 | | &error_code, |
883 | | error ) != 1 ) |
884 | | { |
885 | | libcerror_error_set( |
886 | | error, |
887 | | LIBCERROR_ERROR_DOMAIN_IO, |
888 | | LIBCERROR_IO_ERROR_OPEN_FAILED, |
889 | | "%s: unable to open file.", |
890 | | function ); |
891 | | |
892 | | return( -1 ); |
893 | | } |
894 | | return( 1 ); |
895 | | } |
896 | | |
897 | | #if defined( WINAPI ) |
898 | | |
899 | | /* Opens a file |
900 | | * This function uses the WINAPI function for Windows XP (0x0501) or later |
901 | | * or tries to dynamically call the function for Windows 2000 (0x0500) or earlier |
902 | | * Returns 1 if successful or -1 on error |
903 | | */ |
904 | | int libcfile_file_open_wide_with_error_code( |
905 | | libcfile_file_t *file, |
906 | | const wchar_t *filename, |
907 | | int access_flags, |
908 | | uint32_t *error_code, |
909 | | libcerror_error_t **error ) |
910 | | { |
911 | | #if ( WINVER >= 0x0600 ) |
912 | | FILE_ALIGNMENT_INFO file_alignment_information; |
913 | | #else |
914 | | DISK_GEOMETRY_EX disk_geometry; |
915 | | |
916 | | DWORD response_count = 0; |
917 | | #endif |
918 | | |
919 | | libcfile_internal_file_t *internal_file = NULL; |
920 | | static char *function = "libcfile_file_open_wide_with_error_code"; |
921 | | BOOL result = 0; |
922 | | DWORD file_io_access_flags = 0; |
923 | | DWORD file_io_creation_flags = 0; |
924 | | DWORD file_io_shared_flags = 0; |
925 | | DWORD flags_and_attributes = 0; |
926 | | size_t filename_length = 0; |
927 | | size_t sector_size = 0; |
928 | | ssize_t read_count = 0; |
929 | | |
930 | | if( file == NULL ) |
931 | | { |
932 | | libcerror_error_set( |
933 | | error, |
934 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
935 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
936 | | "%s: invalid file.", |
937 | | function ); |
938 | | |
939 | | return( -1 ); |
940 | | } |
941 | | internal_file = (libcfile_internal_file_t *) file; |
942 | | |
943 | | if( internal_file->handle != INVALID_HANDLE_VALUE ) |
944 | | { |
945 | | libcerror_error_set( |
946 | | error, |
947 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
948 | | LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET, |
949 | | "%s: invalid file - handle value already set.", |
950 | | function ); |
951 | | |
952 | | return( -1 ); |
953 | | } |
954 | | if( filename == NULL ) |
955 | | { |
956 | | libcerror_error_set( |
957 | | error, |
958 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
959 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
960 | | "%s: invalid filename.", |
961 | | function ); |
962 | | |
963 | | return( -1 ); |
964 | | } |
965 | | if( ( ( access_flags & LIBCFILE_ACCESS_FLAG_READ ) != 0 ) |
966 | | && ( ( access_flags & LIBCFILE_ACCESS_FLAG_WRITE ) != 0 ) ) |
967 | | { |
968 | | file_io_access_flags = GENERIC_WRITE | GENERIC_READ; |
969 | | file_io_creation_flags = OPEN_ALWAYS; |
970 | | file_io_shared_flags = FILE_SHARE_READ; |
971 | | } |
972 | | else if( ( access_flags & LIBCFILE_ACCESS_FLAG_READ ) != 0 ) |
973 | | { |
974 | | file_io_access_flags = GENERIC_READ; |
975 | | file_io_creation_flags = OPEN_EXISTING; |
976 | | |
977 | | /* FILE_SHARE_WRITE is set to allow reading files that are |
978 | | * currently being written FILE_SHARE_READ alone does not suffice |
979 | | */ |
980 | | file_io_shared_flags = FILE_SHARE_READ | FILE_SHARE_WRITE; |
981 | | } |
982 | | else if( ( access_flags & LIBCFILE_ACCESS_FLAG_WRITE ) != 0 ) |
983 | | { |
984 | | file_io_access_flags = GENERIC_WRITE; |
985 | | file_io_creation_flags = OPEN_ALWAYS; |
986 | | file_io_shared_flags = FILE_SHARE_READ; |
987 | | } |
988 | | else |
989 | | { |
990 | | libcerror_error_set( |
991 | | error, |
992 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
993 | | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
994 | | "%s: unsupported access flags: 0x%02x.", |
995 | | function, |
996 | | access_flags ); |
997 | | |
998 | | return( -1 ); |
999 | | } |
1000 | | if( ( ( access_flags & LIBCFILE_ACCESS_FLAG_WRITE ) != 0 ) |
1001 | | && ( ( access_flags & LIBCFILE_ACCESS_FLAG_TRUNCATE ) != 0 ) ) |
1002 | | { |
1003 | | file_io_creation_flags = CREATE_ALWAYS; |
1004 | | } |
1005 | | if( error_code == NULL ) |
1006 | | { |
1007 | | libcerror_error_set( |
1008 | | error, |
1009 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1010 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1011 | | "%s: invalid error code.", |
1012 | | function ); |
1013 | | |
1014 | | return( -1 ); |
1015 | | } |
1016 | | filename_length = wide_string_length( |
1017 | | filename ); |
1018 | | |
1019 | | if( filename_length > 4 ) |
1020 | | { |
1021 | | if( ( filename[ 0 ] == (wchar_t) '\\' ) |
1022 | | && ( filename[ 1 ] == (wchar_t) '\\' ) |
1023 | | && ( filename[ 2 ] == (wchar_t) '.' ) |
1024 | | && ( filename[ 3 ] == (wchar_t) '\\' ) ) |
1025 | | { |
1026 | | /* Ignore \\.\F:\ which is an alternative notation for F: |
1027 | | */ |
1028 | | if( ( filename_length < 7 ) |
1029 | | || ( filename[ 5 ] != (wchar_t) ':' ) |
1030 | | || ( filename[ 6 ] != (wchar_t) '\\' ) ) |
1031 | | { |
1032 | | internal_file->is_device_filename = 1; |
1033 | | internal_file->use_asynchronous_io = 1; |
1034 | | } |
1035 | | } |
1036 | | } |
1037 | | flags_and_attributes = FILE_ATTRIBUTE_NORMAL; |
1038 | | |
1039 | | if( internal_file->use_asynchronous_io != 0 ) |
1040 | | { |
1041 | | flags_and_attributes |= FILE_FLAG_OVERLAPPED; |
1042 | | } |
1043 | | #if ( WINVER <= 0x0500 ) |
1044 | | internal_file->handle = libcfile_CreateFileW( |
1045 | | (LPCWSTR) filename, |
1046 | | file_io_access_flags, |
1047 | | file_io_shared_flags, |
1048 | | NULL, |
1049 | | file_io_creation_flags, |
1050 | | flags_and_attributes, |
1051 | | NULL ); |
1052 | | #else |
1053 | | internal_file->handle = CreateFileW( |
1054 | | (LPCWSTR) filename, |
1055 | | file_io_access_flags, |
1056 | | file_io_shared_flags, |
1057 | | NULL, |
1058 | | file_io_creation_flags, |
1059 | | flags_and_attributes, |
1060 | | NULL ); |
1061 | | #endif |
1062 | | if( internal_file->handle == INVALID_HANDLE_VALUE ) |
1063 | | { |
1064 | | *error_code = (uint32_t) GetLastError(); |
1065 | | |
1066 | | switch( *error_code ) |
1067 | | { |
1068 | | case ERROR_ACCESS_DENIED: |
1069 | | libcerror_error_set( |
1070 | | error, |
1071 | | LIBCERROR_ERROR_DOMAIN_IO, |
1072 | | LIBCERROR_IO_ERROR_ACCESS_DENIED, |
1073 | | "%s: access denied to file: %" PRIs_SYSTEM ".", |
1074 | | function, |
1075 | | filename ); |
1076 | | |
1077 | | break; |
1078 | | |
1079 | | case ERROR_FILE_NOT_FOUND: |
1080 | | case ERROR_PATH_NOT_FOUND: |
1081 | | libcerror_error_set( |
1082 | | error, |
1083 | | LIBCERROR_ERROR_DOMAIN_IO, |
1084 | | LIBCERROR_IO_ERROR_INVALID_RESOURCE, |
1085 | | "%s: no such file: %" PRIs_SYSTEM ".", |
1086 | | function, |
1087 | | filename ); |
1088 | | |
1089 | | break; |
1090 | | |
1091 | | default: |
1092 | | libcerror_system_set_error( |
1093 | | error, |
1094 | | LIBCERROR_ERROR_DOMAIN_IO, |
1095 | | LIBCERROR_IO_ERROR_OPEN_FAILED, |
1096 | | *error_code, |
1097 | | "%s: unable to open file: %" PRIs_SYSTEM ".", |
1098 | | function, |
1099 | | filename ); |
1100 | | |
1101 | | break; |
1102 | | } |
1103 | | return( -1 ); |
1104 | | } |
1105 | | if( internal_file->is_device_filename != 0 ) |
1106 | | { |
1107 | | read_count = libcfile_internal_file_io_control_read_with_error_code( |
1108 | | internal_file, |
1109 | | FSCTL_ALLOW_EXTENDED_DASD_IO, |
1110 | | NULL, |
1111 | | 0, |
1112 | | NULL, |
1113 | | 0, |
1114 | | error_code, |
1115 | | error ); |
1116 | | |
1117 | | if( read_count == -1 ) |
1118 | | { |
1119 | | libcerror_error_set( |
1120 | | error, |
1121 | | LIBCERROR_ERROR_DOMAIN_IO, |
1122 | | LIBCERROR_IO_ERROR_IOCTL_FAILED, |
1123 | | "%s: unable to query device for: FSCTL_ALLOW_EXTENDED_DASD_IO.", |
1124 | | function ); |
1125 | | |
1126 | | #if defined( HAVE_DEBUG_OUTPUT ) |
1127 | | if( libcnotify_verbose != 0 ) |
1128 | | { |
1129 | | if( ( error != NULL ) |
1130 | | && ( *error != NULL ) ) |
1131 | | { |
1132 | | libcnotify_print_error_backtrace( |
1133 | | *error ); |
1134 | | } |
1135 | | } |
1136 | | #endif |
1137 | | libcerror_error_free( |
1138 | | error ); |
1139 | | } |
1140 | | #if ( WINVER >= 0x0600 ) |
1141 | | result = GetFileInformationByHandleEx( |
1142 | | internal_file->handle, |
1143 | | FileAlignmentInfo, |
1144 | | (void *) &file_alignment_information, |
1145 | | (DWORD) sizeof( FILE_ALIGNMENT_INFO ) ); |
1146 | | |
1147 | | if( result == FALSE ) |
1148 | | { |
1149 | | *error_code = (uint32_t) GetLastError(); |
1150 | | |
1151 | | libcerror_system_set_error( |
1152 | | error, |
1153 | | LIBCERROR_ERROR_DOMAIN_IO, |
1154 | | LIBCERROR_IO_ERROR_IOCTL_FAILED, |
1155 | | *error_code, |
1156 | | "%s: unable to retrieve file alignment information.", |
1157 | | function ); |
1158 | | |
1159 | | #if defined( HAVE_DEBUG_OUTPUT ) |
1160 | | if( libcnotify_verbose != 0 ) |
1161 | | { |
1162 | | if( ( error != NULL ) |
1163 | | && ( *error != NULL ) ) |
1164 | | { |
1165 | | libcnotify_print_error_backtrace( |
1166 | | *error ); |
1167 | | } |
1168 | | } |
1169 | | #endif |
1170 | | libcerror_error_free( |
1171 | | error ); |
1172 | | } |
1173 | | else |
1174 | | { |
1175 | | if( (size_t) file_alignment_information.AlignmentRequirement >= (size_t) SSIZE_MAX ) |
1176 | | { |
1177 | | libcerror_error_set( |
1178 | | error, |
1179 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1180 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1181 | | "%s: invalid file alignment requirement value out of bounds.", |
1182 | | function ); |
1183 | | |
1184 | | return( -1 ); |
1185 | | } |
1186 | | sector_size = (size_t) file_alignment_information.AlignmentRequirement; |
1187 | | } |
1188 | | #else |
1189 | | result = DeviceIoControl( |
1190 | | internal_file->handle, |
1191 | | IOCTL_DISK_GET_DRIVE_GEOMETRY_EX, |
1192 | | NULL, |
1193 | | 0, |
1194 | | &disk_geometry, |
1195 | | (DWORD) sizeof( DISK_GEOMETRY_EX ), |
1196 | | &response_count, |
1197 | | NULL ); |
1198 | | |
1199 | | if( result == FALSE ) |
1200 | | { |
1201 | | *error_code = (uint32_t) GetLastError(); |
1202 | | |
1203 | | if( *error_code != ERROR_MORE_DATA ) |
1204 | | { |
1205 | | libcerror_system_set_error( |
1206 | | error, |
1207 | | LIBCERROR_ERROR_DOMAIN_IO, |
1208 | | LIBCERROR_IO_ERROR_IOCTL_FAILED, |
1209 | | *error_code, |
1210 | | "%s: unable to retrieve disk geometry.", |
1211 | | function ); |
1212 | | |
1213 | | #if defined( HAVE_DEBUG_OUTPUT ) |
1214 | | if( libcnotify_verbose != 0 ) |
1215 | | { |
1216 | | if( ( error != NULL ) |
1217 | | && ( *error != NULL ) ) |
1218 | | { |
1219 | | libcnotify_print_error_backtrace( |
1220 | | *error ); |
1221 | | } |
1222 | | } |
1223 | | #endif |
1224 | | libcerror_error_free( |
1225 | | error ); |
1226 | | } |
1227 | | else if( response_count < sizeof( DISK_GEOMETRY_EX ) ) |
1228 | | { |
1229 | | libcerror_error_set( |
1230 | | error, |
1231 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1232 | | LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS, |
1233 | | "%s: invalid response count value out of bounds.", |
1234 | | function ); |
1235 | | |
1236 | | #if defined( HAVE_DEBUG_OUTPUT ) |
1237 | | if( libcnotify_verbose != 0 ) |
1238 | | { |
1239 | | if( ( error != NULL ) |
1240 | | && ( *error != NULL ) ) |
1241 | | { |
1242 | | libcnotify_print_error_backtrace( |
1243 | | *error ); |
1244 | | } |
1245 | | } |
1246 | | #endif |
1247 | | libcerror_error_free( |
1248 | | error ); |
1249 | | } |
1250 | | else |
1251 | | { |
1252 | | result = TRUE; |
1253 | | } |
1254 | | } |
1255 | | if( result == TRUE ) |
1256 | | { |
1257 | | #if ( SSIZE_MAX < UINT32_MAX ) |
1258 | | if( (size_t) disk_geometry.Geometry.BytesPerSector >= (size_t) SSIZE_MAX ) |
1259 | | { |
1260 | | libcerror_error_set( |
1261 | | error, |
1262 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1263 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1264 | | "%s: invalid geometry bytes per sector value out of bounds.", |
1265 | | function ); |
1266 | | |
1267 | | return( -1 ); |
1268 | | } |
1269 | | #endif |
1270 | | sector_size = (size_t) disk_geometry.Geometry.BytesPerSector; |
1271 | | } |
1272 | | #endif /* ( WINVER >= 0x0600 ) */ |
1273 | | |
1274 | | if( sector_size != 0 ) |
1275 | | { |
1276 | | if( libcfile_internal_file_set_block_size( |
1277 | | internal_file, |
1278 | | (size_t) sector_size, |
1279 | | error ) != 1 ) |
1280 | | { |
1281 | | libcerror_error_set( |
1282 | | error, |
1283 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1284 | | LIBCERROR_RUNTIME_ERROR_SET_FAILED, |
1285 | | "%s: unable to set block size.", |
1286 | | function ); |
1287 | | |
1288 | | return( -1 ); |
1289 | | } |
1290 | | } |
1291 | | } |
1292 | | if( libcfile_internal_file_get_size( |
1293 | | internal_file, |
1294 | | &( internal_file->size ), |
1295 | | error ) != 1 ) |
1296 | | { |
1297 | | libcerror_error_set( |
1298 | | error, |
1299 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1300 | | LIBCERROR_RUNTIME_ERROR_GET_FAILED, |
1301 | | "%s: unable to retrieve size.", |
1302 | | function ); |
1303 | | |
1304 | | return( -1 ); |
1305 | | } |
1306 | | internal_file->access_flags = access_flags; |
1307 | | internal_file->current_offset = 0; |
1308 | | |
1309 | | return( 1 ); |
1310 | | } |
1311 | | |
1312 | | #elif defined( HAVE_OPEN ) |
1313 | | |
1314 | | /* Opens a file |
1315 | | * This function uses the POSIX open function or equivalent |
1316 | | * Returns 1 if successful or -1 on error |
1317 | | */ |
1318 | | int libcfile_file_open_wide_with_error_code( |
1319 | | libcfile_file_t *file, |
1320 | | const wchar_t *filename, |
1321 | | int access_flags, |
1322 | | uint32_t *error_code, |
1323 | | libcerror_error_t **error ) |
1324 | | { |
1325 | | libcfile_internal_file_t *internal_file = NULL; |
1326 | | static char *function = "libcfile_file_open_wide_with_error_code"; |
1327 | | char *narrow_filename = NULL; |
1328 | | size_t filename_size = 0; |
1329 | | size_t narrow_filename_size = 0; |
1330 | | int file_io_flags = 0; |
1331 | | |
1332 | | if( file == NULL ) |
1333 | | { |
1334 | | libcerror_error_set( |
1335 | | error, |
1336 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1337 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1338 | | "%s: invalid file.", |
1339 | | function ); |
1340 | | |
1341 | | return( -1 ); |
1342 | | } |
1343 | | internal_file = (libcfile_internal_file_t *) file; |
1344 | | |
1345 | | if( internal_file->descriptor != -1 ) |
1346 | | { |
1347 | | libcerror_error_set( |
1348 | | error, |
1349 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1350 | | LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET, |
1351 | | "%s: invalid file - descriptor value already set.", |
1352 | | function ); |
1353 | | |
1354 | | return( -1 ); |
1355 | | } |
1356 | | if( filename == NULL ) |
1357 | | { |
1358 | | libcerror_error_set( |
1359 | | error, |
1360 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1361 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1362 | | "%s: invalid filename.", |
1363 | | function ); |
1364 | | |
1365 | | return( -1 ); |
1366 | | } |
1367 | | if( ( ( access_flags & LIBCFILE_ACCESS_FLAG_READ ) != 0 ) |
1368 | | && ( ( access_flags & LIBCFILE_ACCESS_FLAG_WRITE ) != 0 ) ) |
1369 | | { |
1370 | | file_io_flags = O_RDWR | O_CREAT; |
1371 | | } |
1372 | | else if( ( access_flags & LIBCFILE_ACCESS_FLAG_READ ) != 0 ) |
1373 | | { |
1374 | | file_io_flags = O_RDONLY; |
1375 | | } |
1376 | | else if( ( access_flags & LIBCFILE_ACCESS_FLAG_WRITE ) != 0 ) |
1377 | | { |
1378 | | file_io_flags = O_WRONLY | O_CREAT; |
1379 | | } |
1380 | | else |
1381 | | { |
1382 | | libcerror_error_set( |
1383 | | error, |
1384 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1385 | | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1386 | | "%s: unsupported access flags: 0x%02x.", |
1387 | | function, |
1388 | | access_flags ); |
1389 | | |
1390 | | return( -1 ); |
1391 | | } |
1392 | | if( ( ( access_flags & LIBCFILE_ACCESS_FLAG_WRITE ) != 0 ) |
1393 | | && ( ( access_flags & LIBCFILE_ACCESS_FLAG_TRUNCATE ) != 0 ) ) |
1394 | | { |
1395 | | file_io_flags |= O_TRUNC; |
1396 | | } |
1397 | | if( error_code == NULL ) |
1398 | | { |
1399 | | libcerror_error_set( |
1400 | | error, |
1401 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1402 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1403 | | "%s: invalid error code.", |
1404 | | function ); |
1405 | | |
1406 | | return( -1 ); |
1407 | | } |
1408 | | filename_size = 1 + wide_string_length( |
1409 | | filename ); |
1410 | | |
1411 | | if( libcfile_system_string_size_from_wide_string( |
1412 | | filename, |
1413 | | filename_size, |
1414 | | &narrow_filename_size, |
1415 | | error ) != 1 ) |
1416 | | { |
1417 | | libcerror_error_set( |
1418 | | error, |
1419 | | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
1420 | | LIBCERROR_CONVERSION_ERROR_GENERIC, |
1421 | | "%s: unable to determine narrow character filename size.", |
1422 | | function ); |
1423 | | |
1424 | | goto on_error; |
1425 | | } |
1426 | | narrow_filename = narrow_string_allocate( |
1427 | | narrow_filename_size ); |
1428 | | |
1429 | | if( narrow_filename == NULL ) |
1430 | | { |
1431 | | libcerror_error_set( |
1432 | | error, |
1433 | | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1434 | | LIBCERROR_MEMORY_ERROR_INSUFFICIENT, |
1435 | | "%s: unable to create narrow character filename.", |
1436 | | function ); |
1437 | | |
1438 | | goto on_error; |
1439 | | } |
1440 | | if( libcfile_system_string_copy_from_wide_string( |
1441 | | narrow_filename, |
1442 | | narrow_filename_size, |
1443 | | filename, |
1444 | | filename_size, |
1445 | | error ) != 1 ) |
1446 | | { |
1447 | | libcerror_error_set( |
1448 | | error, |
1449 | | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
1450 | | LIBCERROR_CONVERSION_ERROR_GENERIC, |
1451 | | "%s: unable to set narrow character filename.", |
1452 | | function ); |
1453 | | |
1454 | | goto on_error; |
1455 | | } |
1456 | | #if defined( O_CLOEXEC ) |
1457 | | /* Prevent the file descriptor to remain open across an execve |
1458 | | */ |
1459 | | file_io_flags |= O_CLOEXEC; |
1460 | | #endif |
1461 | | #if defined( HAVE_GLIB_H ) |
1462 | | internal_file->descriptor = g_open( |
1463 | | narrow_filename, |
1464 | | file_io_flags, |
1465 | | 0644 ); |
1466 | | #else |
1467 | | internal_file->descriptor = open( |
1468 | | narrow_filename, |
1469 | | file_io_flags, |
1470 | | 0644 ); |
1471 | | #endif |
1472 | | |
1473 | | memory_free( |
1474 | | narrow_filename ); |
1475 | | |
1476 | | narrow_filename = NULL; |
1477 | | |
1478 | | if( internal_file->descriptor == -1 ) |
1479 | | { |
1480 | | *error_code = (uint32_t) errno; |
1481 | | |
1482 | | switch( *error_code ) |
1483 | | { |
1484 | | case EACCES: |
1485 | | libcerror_error_set( |
1486 | | error, |
1487 | | LIBCERROR_ERROR_DOMAIN_IO, |
1488 | | LIBCERROR_IO_ERROR_ACCESS_DENIED, |
1489 | | "%s: access denied to file: %" PRIs_SYSTEM ".", |
1490 | | function, |
1491 | | filename ); |
1492 | | |
1493 | | break; |
1494 | | |
1495 | | case ENOENT: |
1496 | | libcerror_error_set( |
1497 | | error, |
1498 | | LIBCERROR_ERROR_DOMAIN_IO, |
1499 | | LIBCERROR_IO_ERROR_INVALID_RESOURCE, |
1500 | | "%s: no such file: %" PRIs_SYSTEM ".", |
1501 | | function, |
1502 | | filename ); |
1503 | | |
1504 | | break; |
1505 | | |
1506 | | default: |
1507 | | libcerror_system_set_error( |
1508 | | error, |
1509 | | LIBCERROR_ERROR_DOMAIN_IO, |
1510 | | LIBCERROR_IO_ERROR_OPEN_FAILED, |
1511 | | *error_code, |
1512 | | "%s: unable to open file: %" PRIs_SYSTEM ".", |
1513 | | function, |
1514 | | filename ); |
1515 | | |
1516 | | break; |
1517 | | } |
1518 | | goto on_error; |
1519 | | } |
1520 | | if( libcfile_internal_file_get_size( |
1521 | | internal_file, |
1522 | | &( internal_file->size ), |
1523 | | error ) != 1 ) |
1524 | | { |
1525 | | libcerror_error_set( |
1526 | | error, |
1527 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1528 | | LIBCERROR_RUNTIME_ERROR_GET_FAILED, |
1529 | | "%s: unable to retrieve size.", |
1530 | | function ); |
1531 | | |
1532 | | goto on_error; |
1533 | | } |
1534 | | return( 1 ); |
1535 | | |
1536 | | on_error: |
1537 | | if( narrow_filename != NULL ) |
1538 | | { |
1539 | | memory_free( |
1540 | | narrow_filename ); |
1541 | | } |
1542 | | return( -1 ); |
1543 | | } |
1544 | | |
1545 | | #else |
1546 | | #error Missing file open wide function |
1547 | | #endif |
1548 | | |
1549 | | #endif /* defined( HAVE_WIDE_CHARACTER_TYPE ) */ |
1550 | | |
1551 | | #if defined( WINAPI ) |
1552 | | |
1553 | | /* Closes the file |
1554 | | * This function uses the WINAPI function for Windows 2000 (0x0500) or later |
1555 | | * or tries to dynamically call the function for Windows 2000 (0x0500) or earlier |
1556 | | * Returns 0 if successful or -1 on error |
1557 | | */ |
1558 | | int libcfile_file_close( |
1559 | | libcfile_file_t *file, |
1560 | | libcerror_error_t **error ) |
1561 | | { |
1562 | | libcfile_internal_file_t *internal_file = NULL; |
1563 | | static char *function = "libcfile_file_close"; |
1564 | | DWORD error_code = 0; |
1565 | | BOOL result = FALSE; |
1566 | | |
1567 | | if( file == NULL ) |
1568 | | { |
1569 | | libcerror_error_set( |
1570 | | error, |
1571 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1572 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1573 | | "%s: invalid file.", |
1574 | | function ); |
1575 | | |
1576 | | return( -1 ); |
1577 | | } |
1578 | | internal_file = (libcfile_internal_file_t *) file; |
1579 | | |
1580 | | if( internal_file->handle != INVALID_HANDLE_VALUE ) |
1581 | | { |
1582 | | #if ( WINVER <= 0x0500 ) |
1583 | | result = libcfile_CloseHandle( |
1584 | | internal_file->handle ); |
1585 | | #else |
1586 | | result = CloseHandle( |
1587 | | internal_file->handle ); |
1588 | | #endif |
1589 | | if( result == 0 ) |
1590 | | { |
1591 | | error_code = GetLastError(); |
1592 | | |
1593 | | libcerror_system_set_error( |
1594 | | error, |
1595 | | LIBCERROR_ERROR_DOMAIN_IO, |
1596 | | LIBCERROR_IO_ERROR_CLOSE_FAILED, |
1597 | | error_code, |
1598 | | "%s: unable to close file.", |
1599 | | function ); |
1600 | | |
1601 | | return( -1 ); |
1602 | | } |
1603 | | internal_file->handle = INVALID_HANDLE_VALUE; |
1604 | | internal_file->is_device_filename = 0; |
1605 | | internal_file->use_asynchronous_io = 0; |
1606 | | internal_file->access_flags = 0; |
1607 | | internal_file->size = 0; |
1608 | | internal_file->current_offset = 0; |
1609 | | } |
1610 | | if( internal_file->block_data != NULL ) |
1611 | | { |
1612 | | if( memory_set( |
1613 | | internal_file->block_data, |
1614 | | 0, |
1615 | | internal_file->block_size ) == NULL ) |
1616 | | { |
1617 | | libcerror_error_set( |
1618 | | error, |
1619 | | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1620 | | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
1621 | | "%s: unable to clear block data.", |
1622 | | function ); |
1623 | | |
1624 | | return( -1 ); |
1625 | | } |
1626 | | } |
1627 | | return( 0 ); |
1628 | | } |
1629 | | |
1630 | | #elif defined( HAVE_CLOSE ) |
1631 | | |
1632 | | /* Closes the file |
1633 | | * This function uses the POSIX close function or equivalent |
1634 | | * Returns 0 if successful or -1 on error |
1635 | | */ |
1636 | | int libcfile_file_close( |
1637 | | libcfile_file_t *file, |
1638 | | libcerror_error_t **error ) |
1639 | 0 | { |
1640 | 0 | libcfile_internal_file_t *internal_file = NULL; |
1641 | 0 | static char *function = "libcfile_file_close"; |
1642 | |
|
1643 | 0 | if( file == NULL ) |
1644 | 0 | { |
1645 | 0 | libcerror_error_set( |
1646 | 0 | error, |
1647 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1648 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1649 | 0 | "%s: invalid file.", |
1650 | 0 | function ); |
1651 | |
|
1652 | 0 | return( -1 ); |
1653 | 0 | } |
1654 | 0 | internal_file = (libcfile_internal_file_t *) file; |
1655 | |
|
1656 | 0 | if( internal_file->descriptor != -1 ) |
1657 | 0 | { |
1658 | 0 | if( close( |
1659 | 0 | internal_file->descriptor ) != 0 ) |
1660 | 0 | { |
1661 | 0 | libcerror_system_set_error( |
1662 | 0 | error, |
1663 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
1664 | 0 | LIBCERROR_IO_ERROR_CLOSE_FAILED, |
1665 | 0 | errno, |
1666 | 0 | "%s: unable to close file.", |
1667 | 0 | function ); |
1668 | |
|
1669 | 0 | return( -1 ); |
1670 | 0 | } |
1671 | 0 | internal_file->descriptor = -1; |
1672 | 0 | internal_file->access_flags = 0; |
1673 | 0 | internal_file->size = 0; |
1674 | 0 | internal_file->current_offset = 0; |
1675 | 0 | } |
1676 | 0 | if( internal_file->block_data != NULL ) |
1677 | 0 | { |
1678 | 0 | if( memory_set( |
1679 | 0 | internal_file->block_data, |
1680 | 0 | 0, |
1681 | 0 | internal_file->block_size ) == NULL ) |
1682 | 0 | { |
1683 | 0 | libcerror_error_set( |
1684 | 0 | error, |
1685 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1686 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
1687 | 0 | "%s: unable to clear block data.", |
1688 | 0 | function ); |
1689 | |
|
1690 | 0 | return( -1 ); |
1691 | 0 | } |
1692 | 0 | } |
1693 | 0 | return( 0 ); |
1694 | 0 | } |
1695 | | |
1696 | | #else |
1697 | | #error Missing file close function |
1698 | | #endif |
1699 | | |
1700 | | /* Reads a buffer from the file |
1701 | | * Returns the number of bytes read if successful, or -1 on error |
1702 | | */ |
1703 | | ssize_t libcfile_file_read_buffer( |
1704 | | libcfile_file_t *file, |
1705 | | uint8_t *buffer, |
1706 | | size_t size, |
1707 | | libcerror_error_t **error ) |
1708 | 0 | { |
1709 | 0 | static char *function = "libcfile_file_read_buffer"; |
1710 | 0 | ssize_t read_count = 0; |
1711 | 0 | uint32_t error_code = 0; |
1712 | |
|
1713 | 0 | read_count = libcfile_file_read_buffer_with_error_code( |
1714 | 0 | file, |
1715 | 0 | buffer, |
1716 | 0 | size, |
1717 | 0 | &error_code, |
1718 | 0 | error ); |
1719 | |
|
1720 | 0 | if( read_count == -1 ) |
1721 | 0 | { |
1722 | 0 | libcerror_error_set( |
1723 | 0 | error, |
1724 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
1725 | 0 | LIBCERROR_IO_ERROR_READ_FAILED, |
1726 | 0 | "%s: unable to read from file.", |
1727 | 0 | function ); |
1728 | |
|
1729 | 0 | return( -1 ); |
1730 | 0 | } |
1731 | 0 | return( read_count ); |
1732 | 0 | } |
1733 | | |
1734 | | #if defined( WINAPI ) |
1735 | | |
1736 | | /* Reads a buffer from the file |
1737 | | * This is an internal function to wrap ReadFile in synchronous and asynchronous mode |
1738 | | * the current_offset is only used in asynchronous mode. |
1739 | | * Returns the number of bytes read if successful, or -1 on error |
1740 | | */ |
1741 | | ssize_t libcfile_internal_file_read_buffer_at_offset_with_error_code( |
1742 | | libcfile_internal_file_t *internal_file, |
1743 | | off64_t current_offset, |
1744 | | uint8_t *buffer, |
1745 | | size_t size, |
1746 | | uint32_t *error_code, |
1747 | | libcerror_error_t **error ) |
1748 | | { |
1749 | | OVERLAPPED overlapped_data; |
1750 | | |
1751 | | static char *function = "libcfile_internal_file_read_buffer_at_offset_with_error_code"; |
1752 | | OVERLAPPED *overlapped = NULL; |
1753 | | DWORD read_count = 0; |
1754 | | BOOL io_pending = FALSE; |
1755 | | BOOL result = FALSE; |
1756 | | |
1757 | | if( internal_file == NULL ) |
1758 | | { |
1759 | | libcerror_error_set( |
1760 | | error, |
1761 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1762 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1763 | | "%s: invalid file.", |
1764 | | function ); |
1765 | | |
1766 | | return( -1 ); |
1767 | | } |
1768 | | if( current_offset < 0 ) |
1769 | | { |
1770 | | libcerror_error_set( |
1771 | | error, |
1772 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1773 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1774 | | "%s: invalid current offset value out of bounds.", |
1775 | | function ); |
1776 | | |
1777 | | return( -1 ); |
1778 | | } |
1779 | | if( buffer == NULL ) |
1780 | | { |
1781 | | libcerror_error_set( |
1782 | | error, |
1783 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1784 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1785 | | "%s: invalid buffer.", |
1786 | | function ); |
1787 | | |
1788 | | return( -1 ); |
1789 | | } |
1790 | | #if ( UINT32_MAX < SSIZE_MAX ) |
1791 | | if( size > (size_t) UINT32_MAX ) |
1792 | | #else |
1793 | | if( size > (size_t) SSIZE_MAX ) |
1794 | | #endif |
1795 | | { |
1796 | | libcerror_error_set( |
1797 | | error, |
1798 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1799 | | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
1800 | | "%s: invalid size value exceeds maximum.", |
1801 | | function ); |
1802 | | |
1803 | | return( -1 ); |
1804 | | } |
1805 | | if( error_code == NULL ) |
1806 | | { |
1807 | | libcerror_error_set( |
1808 | | error, |
1809 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1810 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1811 | | "%s: invalid error code.", |
1812 | | function ); |
1813 | | |
1814 | | return( -1 ); |
1815 | | } |
1816 | | /* For Windows devices we need to use asynchronous IO here |
1817 | | * otherwise the ReadFile function can return ERROR_INVALID_PARAMETER |
1818 | | * if the device is read concurrently and the the block is too large |
1819 | | * to fill. Using smaller block sizes decreases the likelyhood but |
1820 | | * also impacts the performance. |
1821 | | */ |
1822 | | if( internal_file->use_asynchronous_io != 0 ) |
1823 | | { |
1824 | | if( memory_set( |
1825 | | &overlapped_data, |
1826 | | 0, |
1827 | | sizeof( OVERLAPPED ) ) == NULL ) |
1828 | | { |
1829 | | libcerror_error_set( |
1830 | | error, |
1831 | | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1832 | | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
1833 | | "%s: unable to clear overlapped data.", |
1834 | | function ); |
1835 | | |
1836 | | return( -1 ); |
1837 | | } |
1838 | | overlapped = &overlapped_data; |
1839 | | |
1840 | | overlapped->Offset = (DWORD) ( 0x0ffffffffUL & current_offset ); |
1841 | | overlapped->OffsetHigh = (DWORD) ( current_offset >> 32 ); |
1842 | | } |
1843 | | #if ( WINVER <= 0x0500 ) |
1844 | | result = libcfile_ReadFile( |
1845 | | internal_file->handle, |
1846 | | buffer, |
1847 | | (DWORD) size, |
1848 | | &read_count, |
1849 | | overlapped ); |
1850 | | #else |
1851 | | result = ReadFile( |
1852 | | internal_file->handle, |
1853 | | (VOID *) buffer, |
1854 | | (DWORD) size, |
1855 | | &read_count, |
1856 | | overlapped ); |
1857 | | #endif |
1858 | | if( result == 0 ) |
1859 | | { |
1860 | | *error_code = (uint32_t) GetLastError(); |
1861 | | |
1862 | | switch( *error_code ) |
1863 | | { |
1864 | | case ERROR_HANDLE_EOF: |
1865 | | break; |
1866 | | |
1867 | | case ERROR_IO_PENDING: |
1868 | | io_pending = TRUE; |
1869 | | break; |
1870 | | |
1871 | | default: |
1872 | | libcerror_system_set_error( |
1873 | | error, |
1874 | | LIBCERROR_ERROR_DOMAIN_IO, |
1875 | | LIBCERROR_IO_ERROR_READ_FAILED, |
1876 | | *error_code, |
1877 | | "%s: unable to read from file.", |
1878 | | function ); |
1879 | | |
1880 | | return( -1 ); |
1881 | | } |
1882 | | } |
1883 | | if( io_pending == TRUE ) |
1884 | | { |
1885 | | #if ( WINVER <= 0x0500 ) |
1886 | | result = libcfile_GetOverlappedResult( |
1887 | | internal_file->handle, |
1888 | | overlapped, |
1889 | | &read_count, |
1890 | | TRUE ); |
1891 | | #else |
1892 | | result = GetOverlappedResult( |
1893 | | internal_file->handle, |
1894 | | overlapped, |
1895 | | &read_count, |
1896 | | TRUE ); |
1897 | | #endif |
1898 | | if( result == 0 ) |
1899 | | { |
1900 | | *error_code = (uint32_t) GetLastError(); |
1901 | | |
1902 | | switch( *error_code ) |
1903 | | { |
1904 | | case ERROR_HANDLE_EOF: |
1905 | | break; |
1906 | | |
1907 | | default: |
1908 | | libcerror_system_set_error( |
1909 | | error, |
1910 | | LIBCERROR_ERROR_DOMAIN_IO, |
1911 | | LIBCERROR_IO_ERROR_READ_FAILED, |
1912 | | *error_code, |
1913 | | "%s: unable to read from file - overlapped result.", |
1914 | | function ); |
1915 | | |
1916 | | return( -1 ); |
1917 | | } |
1918 | | } |
1919 | | } |
1920 | | return( (ssize_t) read_count ); |
1921 | | } |
1922 | | |
1923 | | /* Reads a buffer from the file |
1924 | | * This function uses the WINAPI function for Windows XP (0x0501) or later |
1925 | | * or tries to dynamically call the function for Windows 2000 (0x0500) or earlier |
1926 | | * Returns the number of bytes read if successful, or -1 on error |
1927 | | */ |
1928 | | ssize_t libcfile_file_read_buffer_with_error_code( |
1929 | | libcfile_file_t *file, |
1930 | | uint8_t *buffer, |
1931 | | size_t size, |
1932 | | uint32_t *error_code, |
1933 | | libcerror_error_t **error ) |
1934 | | { |
1935 | | libcfile_internal_file_t *internal_file = NULL; |
1936 | | static char *function = "libcfile_file_read_buffer_with_error_code"; |
1937 | | size_t buffer_offset = 0; |
1938 | | size_t read_size = 0; |
1939 | | size_t read_size_remainder = 0; |
1940 | | ssize_t read_count = 0; |
1941 | | BOOL result = FALSE; |
1942 | | |
1943 | | if( file == NULL ) |
1944 | | { |
1945 | | libcerror_error_set( |
1946 | | error, |
1947 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1948 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1949 | | "%s: invalid file.", |
1950 | | function ); |
1951 | | |
1952 | | return( -1 ); |
1953 | | } |
1954 | | internal_file = (libcfile_internal_file_t *) file; |
1955 | | |
1956 | | if( internal_file->handle == INVALID_HANDLE_VALUE ) |
1957 | | { |
1958 | | libcerror_error_set( |
1959 | | error, |
1960 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1961 | | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
1962 | | "%s: invalid file - missing handle.", |
1963 | | function ); |
1964 | | |
1965 | | return( -1 ); |
1966 | | } |
1967 | | if( buffer == NULL ) |
1968 | | { |
1969 | | libcerror_error_set( |
1970 | | error, |
1971 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1972 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1973 | | "%s: invalid buffer.", |
1974 | | function ); |
1975 | | |
1976 | | return( -1 ); |
1977 | | } |
1978 | | #if ( UINT32_MAX < SSIZE_MAX ) |
1979 | | if( size > (size_t) UINT32_MAX ) |
1980 | | #else |
1981 | | if( size > (size_t) SSIZE_MAX ) |
1982 | | #endif |
1983 | | { |
1984 | | libcerror_error_set( |
1985 | | error, |
1986 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1987 | | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
1988 | | "%s: invalid size value exceeds maximum.", |
1989 | | function ); |
1990 | | |
1991 | | return( -1 ); |
1992 | | } |
1993 | | if( error_code == NULL ) |
1994 | | { |
1995 | | libcerror_error_set( |
1996 | | error, |
1997 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1998 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1999 | | "%s: invalid error code.", |
2000 | | function ); |
2001 | | |
2002 | | return( -1 ); |
2003 | | } |
2004 | | if( internal_file->block_size != 0 ) |
2005 | | { |
2006 | | if( internal_file->block_data == NULL ) |
2007 | | { |
2008 | | libcerror_error_set( |
2009 | | error, |
2010 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
2011 | | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
2012 | | "%s: invalid file - missing block data.", |
2013 | | function ); |
2014 | | |
2015 | | return( -1 ); |
2016 | | } |
2017 | | } |
2018 | | if( internal_file->current_offset < 0 ) |
2019 | | { |
2020 | | libcerror_error_set( |
2021 | | error, |
2022 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
2023 | | LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS, |
2024 | | "%s: invalid file - current offset value out of bounds.", |
2025 | | function ); |
2026 | | |
2027 | | return( -1 ); |
2028 | | } |
2029 | | if( ( size == 0 ) |
2030 | | || ( (size64_t) internal_file->current_offset > internal_file->size ) ) |
2031 | | { |
2032 | | return( 0 ); |
2033 | | } |
2034 | | if( ( (size64_t) internal_file->current_offset + size ) > internal_file->size ) |
2035 | | { |
2036 | | size = (size_t) ( internal_file->size - internal_file->current_offset ); |
2037 | | } |
2038 | | if( internal_file->block_size != 0 ) |
2039 | | { |
2040 | | /* Read a block of data to align with the next block |
2041 | | */ |
2042 | | if( ( internal_file->block_data_offset > 0 ) |
2043 | | && ( internal_file->block_data_size == 0 ) ) |
2044 | | { |
2045 | | if( memory_set( |
2046 | | internal_file->block_data, |
2047 | | 0, |
2048 | | internal_file->block_size ) == NULL ) |
2049 | | { |
2050 | | libcerror_error_set( |
2051 | | error, |
2052 | | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2053 | | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
2054 | | "%s: unable to clear block data.", |
2055 | | function ); |
2056 | | |
2057 | | return( -1 ); |
2058 | | } |
2059 | | read_count = libcfile_internal_file_read_buffer_at_offset_with_error_code( |
2060 | | internal_file, |
2061 | | internal_file->current_offset - internal_file->block_data_offset, |
2062 | | internal_file->block_data, |
2063 | | internal_file->block_size, |
2064 | | error_code, |
2065 | | error ); |
2066 | | |
2067 | | if( read_count != (ssize_t) internal_file->block_size ) |
2068 | | { |
2069 | | libcerror_error_set( |
2070 | | error, |
2071 | | LIBCERROR_ERROR_DOMAIN_IO, |
2072 | | LIBCERROR_IO_ERROR_READ_FAILED, |
2073 | | "%s: invalid read count: %" PRIzd " returned.", |
2074 | | function, |
2075 | | read_count ); |
2076 | | |
2077 | | return( -1 ); |
2078 | | } |
2079 | | internal_file->block_data_size = (size_t) read_count; |
2080 | | } |
2081 | | if( ( internal_file->block_data_offset > 0 ) |
2082 | | && ( internal_file->block_data_offset < internal_file->block_data_size ) ) |
2083 | | { |
2084 | | read_size = internal_file->block_data_size - internal_file->block_data_offset; |
2085 | | |
2086 | | if( read_size > size ) |
2087 | | { |
2088 | | read_size = size; |
2089 | | } |
2090 | | if( memory_copy( |
2091 | | buffer, |
2092 | | &( internal_file->block_data[ internal_file->block_data_offset ] ), |
2093 | | read_size ) == NULL ) |
2094 | | { |
2095 | | libcerror_error_set( |
2096 | | error, |
2097 | | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2098 | | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
2099 | | "%s: unable to copy block data.", |
2100 | | function ); |
2101 | | |
2102 | | return( -1 ); |
2103 | | } |
2104 | | buffer_offset += read_size; |
2105 | | size -= read_size; |
2106 | | internal_file->current_offset += read_size; |
2107 | | internal_file->block_data_offset += read_size; |
2108 | | } |
2109 | | if( size == 0 ) |
2110 | | { |
2111 | | return( (ssize_t) buffer_offset ); |
2112 | | } |
2113 | | } |
2114 | | read_size = size; |
2115 | | |
2116 | | if( internal_file->block_size != 0 ) |
2117 | | { |
2118 | | /* Read block aligned |
2119 | | */ |
2120 | | read_size_remainder = read_size % internal_file->block_size; |
2121 | | read_size -= read_size_remainder; |
2122 | | } |
2123 | | if( read_size > 0 ) |
2124 | | { |
2125 | | read_count = libcfile_internal_file_read_buffer_at_offset_with_error_code( |
2126 | | internal_file, |
2127 | | internal_file->current_offset, |
2128 | | &( buffer[ buffer_offset ] ), |
2129 | | read_size, |
2130 | | error_code, |
2131 | | error ); |
2132 | | |
2133 | | if( ( internal_file->block_size == 0 ) |
2134 | | && ( read_count < 0 ) ) |
2135 | | { |
2136 | | result = 0; |
2137 | | } |
2138 | | else if( ( internal_file->block_size != 0 ) |
2139 | | && ( read_count != (ssize_t) read_size ) ) |
2140 | | { |
2141 | | result = 0; |
2142 | | } |
2143 | | else |
2144 | | { |
2145 | | result = 1; |
2146 | | } |
2147 | | if( result == 0 ) |
2148 | | { |
2149 | | libcerror_system_set_error( |
2150 | | error, |
2151 | | LIBCERROR_ERROR_DOMAIN_IO, |
2152 | | LIBCERROR_IO_ERROR_READ_FAILED, |
2153 | | *error_code, |
2154 | | "%s: unable to read from file.", |
2155 | | function ); |
2156 | | |
2157 | | return( -1 ); |
2158 | | } |
2159 | | buffer_offset += (size_t) read_count; |
2160 | | internal_file->current_offset += read_count; |
2161 | | } |
2162 | | /* Read the non-aligned remainder |
2163 | | */ |
2164 | | if( read_size_remainder > 0 ) |
2165 | | { |
2166 | | if( memory_set( |
2167 | | internal_file->block_data, |
2168 | | 0, |
2169 | | internal_file->block_size ) == NULL ) |
2170 | | { |
2171 | | libcerror_error_set( |
2172 | | error, |
2173 | | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2174 | | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
2175 | | "%s: unable to clear block data.", |
2176 | | function ); |
2177 | | |
2178 | | return( -1 ); |
2179 | | } |
2180 | | read_count = libcfile_internal_file_read_buffer_at_offset_with_error_code( |
2181 | | internal_file, |
2182 | | internal_file->current_offset, |
2183 | | internal_file->block_data, |
2184 | | internal_file->block_size, |
2185 | | error_code, |
2186 | | error ); |
2187 | | |
2188 | | if( read_count != (ssize_t) internal_file->block_size ) |
2189 | | { |
2190 | | libcerror_error_set( |
2191 | | error, |
2192 | | LIBCERROR_ERROR_DOMAIN_IO, |
2193 | | LIBCERROR_IO_ERROR_READ_FAILED, |
2194 | | "%s: invalid read count: %" PRIzd " returned.", |
2195 | | function, |
2196 | | read_count ); |
2197 | | |
2198 | | return( -1 ); |
2199 | | } |
2200 | | internal_file->block_data_offset = 0; |
2201 | | internal_file->block_data_size = (size_t) read_count; |
2202 | | |
2203 | | if( memory_copy( |
2204 | | &( buffer[ buffer_offset ] ), |
2205 | | internal_file->block_data, |
2206 | | read_size_remainder ) == NULL ) |
2207 | | { |
2208 | | libcerror_error_set( |
2209 | | error, |
2210 | | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2211 | | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
2212 | | "%s: unable to copy block data.", |
2213 | | function ); |
2214 | | |
2215 | | return( -1 ); |
2216 | | } |
2217 | | buffer_offset += read_size_remainder; |
2218 | | internal_file->current_offset += read_size_remainder; |
2219 | | internal_file->block_data_offset += read_size_remainder; |
2220 | | } |
2221 | | return( (ssize_t) buffer_offset ); |
2222 | | } |
2223 | | |
2224 | | #elif defined( HAVE_READ ) |
2225 | | |
2226 | | /* Reads a buffer from the file |
2227 | | * This function uses the POSIX read function or equivalent |
2228 | | * Returns the number of bytes read if successful, or -1 on error |
2229 | | */ |
2230 | | ssize_t libcfile_file_read_buffer_with_error_code( |
2231 | | libcfile_file_t *file, |
2232 | | uint8_t *buffer, |
2233 | | size_t size, |
2234 | | uint32_t *error_code, |
2235 | | libcerror_error_t **error ) |
2236 | 0 | { |
2237 | 0 | libcfile_internal_file_t *internal_file = NULL; |
2238 | 0 | static char *function = "libcfile_file_read_buffer_with_error_code"; |
2239 | 0 | size_t buffer_offset = 0; |
2240 | 0 | size_t read_size = 0; |
2241 | 0 | size_t read_size_remainder = 0; |
2242 | 0 | ssize_t read_count = 0; |
2243 | 0 | int result = 0; |
2244 | |
|
2245 | 0 | if( file == NULL ) |
2246 | 0 | { |
2247 | 0 | libcerror_error_set( |
2248 | 0 | error, |
2249 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2250 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2251 | 0 | "%s: invalid file.", |
2252 | 0 | function ); |
2253 | |
|
2254 | 0 | return( -1 ); |
2255 | 0 | } |
2256 | 0 | internal_file = (libcfile_internal_file_t *) file; |
2257 | |
|
2258 | 0 | if( internal_file->descriptor == -1 ) |
2259 | 0 | { |
2260 | 0 | libcerror_error_set( |
2261 | 0 | error, |
2262 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
2263 | 0 | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
2264 | 0 | "%s: invalid file - missing descriptor.", |
2265 | 0 | function ); |
2266 | |
|
2267 | 0 | return( -1 ); |
2268 | 0 | } |
2269 | 0 | if( buffer == NULL ) |
2270 | 0 | { |
2271 | 0 | libcerror_error_set( |
2272 | 0 | error, |
2273 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2274 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2275 | 0 | "%s: invalid buffer.", |
2276 | 0 | function ); |
2277 | |
|
2278 | 0 | return( -1 ); |
2279 | 0 | } |
2280 | 0 | if( size > (size_t) SSIZE_MAX ) |
2281 | 0 | { |
2282 | 0 | libcerror_error_set( |
2283 | 0 | error, |
2284 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2285 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
2286 | 0 | "%s: invalid size value exceeds maximum.", |
2287 | 0 | function ); |
2288 | |
|
2289 | 0 | return( -1 ); |
2290 | 0 | } |
2291 | 0 | if( error_code == NULL ) |
2292 | 0 | { |
2293 | 0 | libcerror_error_set( |
2294 | 0 | error, |
2295 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2296 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2297 | 0 | "%s: invalid error code.", |
2298 | 0 | function ); |
2299 | |
|
2300 | 0 | return( -1 ); |
2301 | 0 | } |
2302 | 0 | if( internal_file->block_size != 0 ) |
2303 | 0 | { |
2304 | 0 | if( internal_file->block_data == NULL ) |
2305 | 0 | { |
2306 | 0 | libcerror_error_set( |
2307 | 0 | error, |
2308 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
2309 | 0 | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
2310 | 0 | "%s: invalid file - missing block data.", |
2311 | 0 | function ); |
2312 | |
|
2313 | 0 | return( -1 ); |
2314 | 0 | } |
2315 | 0 | } |
2316 | 0 | if( internal_file->current_offset < 0 ) |
2317 | 0 | { |
2318 | 0 | libcerror_error_set( |
2319 | 0 | error, |
2320 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
2321 | 0 | LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS, |
2322 | 0 | "%s: invalid file - current offset value out of bounds.", |
2323 | 0 | function ); |
2324 | |
|
2325 | 0 | return( -1 ); |
2326 | 0 | } |
2327 | 0 | if( ( size == 0 ) |
2328 | 0 | || ( (size64_t) internal_file->current_offset > internal_file->size ) ) |
2329 | 0 | { |
2330 | 0 | return( 0 ); |
2331 | 0 | } |
2332 | 0 | if( ( (size64_t) internal_file->current_offset + size ) > internal_file->size ) |
2333 | 0 | { |
2334 | 0 | size = (size_t) ( internal_file->size - internal_file->current_offset ); |
2335 | 0 | } |
2336 | 0 | if( internal_file->block_size != 0 ) |
2337 | 0 | { |
2338 | | /* Read a block of data to align with the next block |
2339 | | */ |
2340 | 0 | if( ( internal_file->block_data_offset > 0 ) |
2341 | 0 | && ( internal_file->block_data_size == 0 ) ) |
2342 | 0 | { |
2343 | 0 | if( memory_set( |
2344 | 0 | internal_file->block_data, |
2345 | 0 | 0, |
2346 | 0 | internal_file->block_size ) == NULL ) |
2347 | 0 | { |
2348 | 0 | libcerror_error_set( |
2349 | 0 | error, |
2350 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2351 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
2352 | 0 | "%s: unable to clear block data.", |
2353 | 0 | function ); |
2354 | |
|
2355 | 0 | return( -1 ); |
2356 | 0 | } |
2357 | 0 | read_count = read( |
2358 | 0 | internal_file->descriptor, |
2359 | 0 | internal_file->block_data, |
2360 | 0 | internal_file->block_size ); |
2361 | |
|
2362 | 0 | if( read_count != (ssize_t) internal_file->block_size ) |
2363 | 0 | { |
2364 | 0 | *error_code = (uint32_t) errno; |
2365 | |
|
2366 | 0 | libcerror_system_set_error( |
2367 | 0 | error, |
2368 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
2369 | 0 | LIBCERROR_IO_ERROR_READ_FAILED, |
2370 | 0 | *error_code, |
2371 | 0 | "%s: unable to read from file.", |
2372 | 0 | function ); |
2373 | |
|
2374 | 0 | return( -1 ); |
2375 | 0 | } |
2376 | 0 | internal_file->block_data_size = (size_t) read_count; |
2377 | 0 | } |
2378 | 0 | if( ( internal_file->block_data_offset > 0 ) |
2379 | 0 | && ( internal_file->block_data_offset < internal_file->block_data_size ) ) |
2380 | 0 | { |
2381 | 0 | read_size = internal_file->block_data_size - internal_file->block_data_offset; |
2382 | |
|
2383 | 0 | if( read_size > size ) |
2384 | 0 | { |
2385 | 0 | read_size = size; |
2386 | 0 | } |
2387 | 0 | if( memory_copy( |
2388 | 0 | buffer, |
2389 | 0 | &( internal_file->block_data[ internal_file->block_data_offset ] ), |
2390 | 0 | read_size ) == NULL ) |
2391 | 0 | { |
2392 | 0 | libcerror_error_set( |
2393 | 0 | error, |
2394 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2395 | 0 | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
2396 | 0 | "%s: unable to copy block data.", |
2397 | 0 | function ); |
2398 | |
|
2399 | 0 | return( -1 ); |
2400 | 0 | } |
2401 | 0 | buffer_offset += read_size; |
2402 | 0 | size -= read_size; |
2403 | 0 | internal_file->block_data_offset += read_size; |
2404 | 0 | internal_file->current_offset += read_size; |
2405 | 0 | } |
2406 | 0 | if( size == 0 ) |
2407 | 0 | { |
2408 | 0 | return( (ssize_t) buffer_offset ); |
2409 | 0 | } |
2410 | 0 | } |
2411 | 0 | read_size = size; |
2412 | |
|
2413 | 0 | if( internal_file->block_size != 0 ) |
2414 | 0 | { |
2415 | | /* Read block aligned |
2416 | | */ |
2417 | 0 | read_size_remainder = read_size % internal_file->block_size; |
2418 | 0 | read_size -= read_size_remainder; |
2419 | 0 | } |
2420 | 0 | if( read_size > 0 ) |
2421 | 0 | { |
2422 | 0 | read_count = read( |
2423 | 0 | internal_file->descriptor, |
2424 | 0 | (void *) &( buffer[ buffer_offset ] ), |
2425 | 0 | read_size ); |
2426 | |
|
2427 | 0 | if( ( internal_file->block_size == 0 ) |
2428 | 0 | && ( read_count < 0 ) ) |
2429 | 0 | { |
2430 | 0 | result = 0; |
2431 | 0 | } |
2432 | 0 | else if( ( internal_file->block_size != 0 ) |
2433 | 0 | && ( read_count != (ssize_t) read_size ) ) |
2434 | 0 | { |
2435 | 0 | result = 0; |
2436 | 0 | } |
2437 | 0 | else |
2438 | 0 | { |
2439 | 0 | result = 1; |
2440 | 0 | } |
2441 | 0 | if( result == 0 ) |
2442 | 0 | { |
2443 | 0 | *error_code = (uint32_t) errno; |
2444 | |
|
2445 | 0 | libcerror_system_set_error( |
2446 | 0 | error, |
2447 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
2448 | 0 | LIBCERROR_IO_ERROR_READ_FAILED, |
2449 | 0 | *error_code, |
2450 | 0 | "%s: unable to read from file.", |
2451 | 0 | function ); |
2452 | |
|
2453 | 0 | return( -1 ); |
2454 | 0 | } |
2455 | 0 | buffer_offset += (size_t) read_count; |
2456 | 0 | internal_file->current_offset += read_count; |
2457 | 0 | } |
2458 | | /* Read the non-aligned remainder |
2459 | | */ |
2460 | 0 | if( read_size_remainder > 0 ) |
2461 | 0 | { |
2462 | 0 | if( memory_set( |
2463 | 0 | internal_file->block_data, |
2464 | 0 | 0, |
2465 | 0 | internal_file->block_size ) == NULL ) |
2466 | 0 | { |
2467 | 0 | libcerror_error_set( |
2468 | 0 | error, |
2469 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2470 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
2471 | 0 | "%s: unable to clear block data.", |
2472 | 0 | function ); |
2473 | |
|
2474 | 0 | return( -1 ); |
2475 | 0 | } |
2476 | 0 | read_count = read( |
2477 | 0 | internal_file->descriptor, |
2478 | 0 | internal_file->block_data, |
2479 | 0 | internal_file->block_size ); |
2480 | |
|
2481 | 0 | if( read_count != (ssize_t) internal_file->block_size ) |
2482 | 0 | { |
2483 | 0 | *error_code = (uint32_t) errno; |
2484 | |
|
2485 | 0 | libcerror_system_set_error( |
2486 | 0 | error, |
2487 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
2488 | 0 | LIBCERROR_IO_ERROR_READ_FAILED, |
2489 | 0 | *error_code, |
2490 | 0 | "%s: unable to read from file.", |
2491 | 0 | function ); |
2492 | |
|
2493 | 0 | return( -1 ); |
2494 | 0 | } |
2495 | 0 | internal_file->block_data_offset = 0; |
2496 | 0 | internal_file->block_data_size = (size_t) read_count; |
2497 | |
|
2498 | 0 | if( memory_copy( |
2499 | 0 | &( buffer[ buffer_offset ] ), |
2500 | 0 | internal_file->block_data, |
2501 | 0 | read_size_remainder ) == NULL ) |
2502 | 0 | { |
2503 | 0 | libcerror_error_set( |
2504 | 0 | error, |
2505 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2506 | 0 | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
2507 | 0 | "%s: unable to copy block data.", |
2508 | 0 | function ); |
2509 | |
|
2510 | 0 | return( -1 ); |
2511 | 0 | } |
2512 | 0 | buffer_offset += read_size_remainder; |
2513 | 0 | internal_file->block_data_offset += read_size_remainder; |
2514 | 0 | internal_file->current_offset += read_size_remainder; |
2515 | 0 | } |
2516 | 0 | return( (ssize_t) buffer_offset ); |
2517 | 0 | } |
2518 | | |
2519 | | #else |
2520 | | #error Missing file read function |
2521 | | #endif |
2522 | | |
2523 | | /* Writes a buffer to the file |
2524 | | * Returns the number of bytes written if successful, or -1 on error |
2525 | | */ |
2526 | | ssize_t libcfile_file_write_buffer( |
2527 | | libcfile_file_t *file, |
2528 | | const uint8_t *buffer, |
2529 | | size_t size, |
2530 | | libcerror_error_t **error ) |
2531 | 0 | { |
2532 | 0 | static char *function = "libcfile_file_write_buffer"; |
2533 | 0 | ssize_t write_count = 0; |
2534 | 0 | uint32_t error_code = 0; |
2535 | |
|
2536 | 0 | write_count = libcfile_file_write_buffer_with_error_code( |
2537 | 0 | file, |
2538 | 0 | buffer, |
2539 | 0 | size, |
2540 | 0 | &error_code, |
2541 | 0 | error ); |
2542 | |
|
2543 | 0 | if( write_count == -1 ) |
2544 | 0 | { |
2545 | 0 | libcerror_error_set( |
2546 | 0 | error, |
2547 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
2548 | 0 | LIBCERROR_IO_ERROR_WRITE_FAILED, |
2549 | 0 | "%s: unable to write to file.", |
2550 | 0 | function ); |
2551 | |
|
2552 | 0 | return( -1 ); |
2553 | 0 | } |
2554 | 0 | return( write_count ); |
2555 | 0 | } |
2556 | | |
2557 | | #if defined( WINAPI ) |
2558 | | |
2559 | | /* Writes a buffer to the file |
2560 | | * This function uses the WINAPI function for Windows XP (0x0501) or later |
2561 | | * or tries to dynamically call the function for Windows 2000 (0x0500) or earlier |
2562 | | * Returns the number of bytes written if successful, or -1 on error |
2563 | | */ |
2564 | | ssize_t libcfile_file_write_buffer_with_error_code( |
2565 | | libcfile_file_t *file, |
2566 | | const uint8_t *buffer, |
2567 | | size_t size, |
2568 | | uint32_t *error_code, |
2569 | | libcerror_error_t **error ) |
2570 | | { |
2571 | | libcfile_internal_file_t *internal_file = NULL; |
2572 | | static char *function = "libcfile_file_write_buffer_with_error_code"; |
2573 | | ssize_t write_count = 0; |
2574 | | BOOL result = FALSE; |
2575 | | |
2576 | | if( file == NULL ) |
2577 | | { |
2578 | | libcerror_error_set( |
2579 | | error, |
2580 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2581 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2582 | | "%s: invalid file.", |
2583 | | function ); |
2584 | | |
2585 | | return( -1 ); |
2586 | | } |
2587 | | internal_file = (libcfile_internal_file_t *) file; |
2588 | | |
2589 | | if( internal_file->handle == INVALID_HANDLE_VALUE ) |
2590 | | { |
2591 | | libcerror_error_set( |
2592 | | error, |
2593 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
2594 | | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
2595 | | "%s: invalid file - missing handle.", |
2596 | | function ); |
2597 | | |
2598 | | return( -1 ); |
2599 | | } |
2600 | | if( buffer == NULL ) |
2601 | | { |
2602 | | libcerror_error_set( |
2603 | | error, |
2604 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2605 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2606 | | "%s: invalid buffer.", |
2607 | | function ); |
2608 | | |
2609 | | return( -1 ); |
2610 | | } |
2611 | | #if ( UINT32_MAX < SSIZE_MAX ) |
2612 | | if( size > (size_t) UINT32_MAX ) |
2613 | | #else |
2614 | | if( size > (size_t) SSIZE_MAX ) |
2615 | | #endif |
2616 | | { |
2617 | | libcerror_error_set( |
2618 | | error, |
2619 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2620 | | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
2621 | | "%s: invalid size value exceeds maximum.", |
2622 | | function ); |
2623 | | |
2624 | | return( -1 ); |
2625 | | } |
2626 | | if( error_code == NULL ) |
2627 | | { |
2628 | | libcerror_error_set( |
2629 | | error, |
2630 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2631 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2632 | | "%s: invalid error code.", |
2633 | | function ); |
2634 | | |
2635 | | return( -1 ); |
2636 | | } |
2637 | | #if ( WINVER <= 0x0500 ) |
2638 | | result = libcfile_WriteFile( |
2639 | | internal_file->handle, |
2640 | | (VOID *) buffer, |
2641 | | (DWORD) size, |
2642 | | (DWORD *) &write_count, |
2643 | | NULL ); |
2644 | | #else |
2645 | | result = WriteFile( |
2646 | | internal_file->handle, |
2647 | | (VOID *) buffer, |
2648 | | (DWORD) size, |
2649 | | (DWORD *) &write_count, |
2650 | | NULL ); |
2651 | | #endif |
2652 | | if( result == 0 ) |
2653 | | { |
2654 | | *error_code = (uint32_t) GetLastError(); |
2655 | | |
2656 | | libcerror_system_set_error( |
2657 | | error, |
2658 | | LIBCERROR_ERROR_DOMAIN_IO, |
2659 | | LIBCERROR_IO_ERROR_WRITE_FAILED, |
2660 | | *error_code, |
2661 | | "%s: unable to write to file.", |
2662 | | function ); |
2663 | | |
2664 | | return( -1 ); |
2665 | | } |
2666 | | if( write_count < 0 ) |
2667 | | { |
2668 | | libcerror_error_set( |
2669 | | error, |
2670 | | LIBCERROR_ERROR_DOMAIN_IO, |
2671 | | LIBCERROR_IO_ERROR_WRITE_FAILED, |
2672 | | "%s: invalid write count: %" PRIzd " returned.", |
2673 | | function, |
2674 | | write_count ); |
2675 | | |
2676 | | return( -1 ); |
2677 | | } |
2678 | | internal_file->current_offset += write_count; |
2679 | | |
2680 | | if( (size64_t) internal_file->current_offset > internal_file->size ) |
2681 | | { |
2682 | | internal_file->size = (size64_t) internal_file->current_offset; |
2683 | | } |
2684 | | return( write_count ); |
2685 | | } |
2686 | | |
2687 | | #elif defined( HAVE_WRITE ) |
2688 | | |
2689 | | /* Writes a buffer to the file |
2690 | | * This function uses the POSIX write function or equivalent |
2691 | | * Returns the number of bytes written if successful, or -1 on error |
2692 | | */ |
2693 | | ssize_t libcfile_file_write_buffer_with_error_code( |
2694 | | libcfile_file_t *file, |
2695 | | const uint8_t *buffer, |
2696 | | size_t size, |
2697 | | uint32_t *error_code, |
2698 | | libcerror_error_t **error ) |
2699 | 0 | { |
2700 | 0 | libcfile_internal_file_t *internal_file = NULL; |
2701 | 0 | static char *function = "libcfile_file_write_buffer_with_error_code"; |
2702 | 0 | ssize_t write_count = 0; |
2703 | |
|
2704 | 0 | if( file == NULL ) |
2705 | 0 | { |
2706 | 0 | libcerror_error_set( |
2707 | 0 | error, |
2708 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2709 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2710 | 0 | "%s: invalid file.", |
2711 | 0 | function ); |
2712 | |
|
2713 | 0 | return( -1 ); |
2714 | 0 | } |
2715 | 0 | internal_file = (libcfile_internal_file_t *) file; |
2716 | |
|
2717 | 0 | if( internal_file->descriptor == -1 ) |
2718 | 0 | { |
2719 | 0 | libcerror_error_set( |
2720 | 0 | error, |
2721 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
2722 | 0 | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
2723 | 0 | "%s: invalid file - missing descriptor.", |
2724 | 0 | function ); |
2725 | |
|
2726 | 0 | return( -1 ); |
2727 | 0 | } |
2728 | 0 | if( buffer == NULL ) |
2729 | 0 | { |
2730 | 0 | libcerror_error_set( |
2731 | 0 | error, |
2732 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2733 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2734 | 0 | "%s: invalid buffer.", |
2735 | 0 | function ); |
2736 | |
|
2737 | 0 | return( -1 ); |
2738 | 0 | } |
2739 | 0 | if( size > (size_t) SSIZE_MAX ) |
2740 | 0 | { |
2741 | 0 | libcerror_error_set( |
2742 | 0 | error, |
2743 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2744 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
2745 | 0 | "%s: invalid size value exceeds maximum.", |
2746 | 0 | function ); |
2747 | |
|
2748 | 0 | return( -1 ); |
2749 | 0 | } |
2750 | 0 | if( error_code == NULL ) |
2751 | 0 | { |
2752 | 0 | libcerror_error_set( |
2753 | 0 | error, |
2754 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2755 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2756 | 0 | "%s: invalid error code.", |
2757 | 0 | function ); |
2758 | |
|
2759 | 0 | return( -1 ); |
2760 | 0 | } |
2761 | 0 | write_count = write( |
2762 | 0 | internal_file->descriptor, |
2763 | 0 | (void *) buffer, |
2764 | 0 | size ); |
2765 | |
|
2766 | 0 | if( write_count < 0 ) |
2767 | 0 | { |
2768 | 0 | *error_code = (uint32_t) errno; |
2769 | |
|
2770 | 0 | libcerror_system_set_error( |
2771 | 0 | error, |
2772 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
2773 | 0 | LIBCERROR_IO_ERROR_WRITE_FAILED, |
2774 | 0 | *error_code, |
2775 | 0 | "%s: unable to write to file.", |
2776 | 0 | function ); |
2777 | |
|
2778 | 0 | return( -1 ); |
2779 | 0 | } |
2780 | 0 | internal_file->current_offset += write_count; |
2781 | |
|
2782 | 0 | if( (size64_t) internal_file->current_offset > internal_file->size ) |
2783 | 0 | { |
2784 | 0 | internal_file->size = (size64_t) internal_file->current_offset; |
2785 | 0 | } |
2786 | 0 | return( write_count ); |
2787 | 0 | } |
2788 | | |
2789 | | #else |
2790 | | #error Missing file write function |
2791 | | #endif |
2792 | | |
2793 | | #if defined( WINAPI ) |
2794 | | |
2795 | | /* Seeks a certain offset within the file |
2796 | | * This function uses the WINAPI function for Windows XP (0x0501) or later |
2797 | | * or tries to dynamically call the function for Windows 2000 (0x0500) or earlier |
2798 | | * Returns the offset if the seek is successful or -1 on error |
2799 | | */ |
2800 | | off64_t libcfile_file_seek_offset( |
2801 | | libcfile_file_t *file, |
2802 | | off64_t offset, |
2803 | | int whence, |
2804 | | libcerror_error_t **error ) |
2805 | | { |
2806 | | libcfile_internal_file_t *internal_file = NULL; |
2807 | | static char *function = "libcfile_file_seek_offset"; |
2808 | | off64_t offset_remainder = 0; |
2809 | | LARGE_INTEGER large_integer_offset = LIBCFILE_LARGE_INTEGER_ZERO; |
2810 | | DWORD error_code = 0; |
2811 | | DWORD move_method = 0; |
2812 | | |
2813 | | if( file == NULL ) |
2814 | | { |
2815 | | libcerror_error_set( |
2816 | | error, |
2817 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2818 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2819 | | "%s: invalid file.", |
2820 | | function ); |
2821 | | |
2822 | | return( -1 ); |
2823 | | } |
2824 | | internal_file = (libcfile_internal_file_t *) file; |
2825 | | |
2826 | | if( internal_file->handle == INVALID_HANDLE_VALUE ) |
2827 | | { |
2828 | | libcerror_error_set( |
2829 | | error, |
2830 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
2831 | | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
2832 | | "%s: invalid file - missing handle.", |
2833 | | function ); |
2834 | | |
2835 | | return( -1 ); |
2836 | | } |
2837 | | if( offset > (off64_t) INT64_MAX ) |
2838 | | { |
2839 | | libcerror_error_set( |
2840 | | error, |
2841 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2842 | | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
2843 | | "%s: invalid offset value exceeds maximum.", |
2844 | | function ); |
2845 | | |
2846 | | return( -1 ); |
2847 | | } |
2848 | | if( ( whence != SEEK_CUR ) |
2849 | | && ( whence != SEEK_END ) |
2850 | | && ( whence != SEEK_SET ) ) |
2851 | | { |
2852 | | libcerror_error_set( |
2853 | | error, |
2854 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2855 | | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2856 | | "%s: unsupported whence.", |
2857 | | function ); |
2858 | | |
2859 | | return( -1 ); |
2860 | | } |
2861 | | if( internal_file->block_size != 0 ) |
2862 | | { |
2863 | | if( whence == SEEK_CUR ) |
2864 | | { |
2865 | | offset += internal_file->current_offset; |
2866 | | } |
2867 | | else if( whence == SEEK_END ) |
2868 | | { |
2869 | | offset += internal_file->size; |
2870 | | } |
2871 | | whence = SEEK_SET; |
2872 | | offset_remainder = offset % internal_file->block_size; |
2873 | | offset -= offset_remainder; |
2874 | | } |
2875 | | if( whence == SEEK_SET ) |
2876 | | { |
2877 | | move_method = FILE_BEGIN; |
2878 | | } |
2879 | | else if( whence == SEEK_CUR ) |
2880 | | { |
2881 | | move_method = FILE_CURRENT; |
2882 | | } |
2883 | | else if( whence == SEEK_END ) |
2884 | | { |
2885 | | move_method = FILE_END; |
2886 | | } |
2887 | | /* SetFilePointerEx cannot be used in combination with FILE_FLAG_OVERLAPPED. |
2888 | | */ |
2889 | | if( internal_file->use_asynchronous_io == 0 ) |
2890 | | { |
2891 | | #if defined( __BORLANDC__ ) && __BORLANDC__ <= 0x0520 |
2892 | | large_integer_offset.QuadPart = (LONGLONG) offset; |
2893 | | #else |
2894 | | large_integer_offset.LowPart = (DWORD) ( 0x0ffffffffUL & offset ); |
2895 | | large_integer_offset.HighPart = (LONG) ( offset >> 32 ); |
2896 | | #endif |
2897 | | |
2898 | | #if ( WINVER <= 0x0500 ) |
2899 | | if( libcfile_SetFilePointerEx( |
2900 | | internal_file->handle, |
2901 | | large_integer_offset, |
2902 | | &large_integer_offset, |
2903 | | move_method ) == 0 ) |
2904 | | #else |
2905 | | if( SetFilePointerEx( |
2906 | | internal_file->handle, |
2907 | | large_integer_offset, |
2908 | | &large_integer_offset, |
2909 | | move_method ) == 0 ) |
2910 | | #endif |
2911 | | { |
2912 | | error_code = GetLastError(); |
2913 | | |
2914 | | libcerror_system_set_error( |
2915 | | error, |
2916 | | LIBCERROR_ERROR_DOMAIN_IO, |
2917 | | LIBCERROR_IO_ERROR_SEEK_FAILED, |
2918 | | error_code, |
2919 | | "%s: unable to seek offset in file.", |
2920 | | function ); |
2921 | | |
2922 | | return( -1 ); |
2923 | | } |
2924 | | #if defined( __BORLANDC__ ) && __BORLANDC__ <= 0x0520 |
2925 | | offset = (off64_t) large_integer_offset.QuadPart; |
2926 | | #else |
2927 | | offset = ( (off64_t) large_integer_offset.HighPart << 32 ) + large_integer_offset.LowPart; |
2928 | | #endif |
2929 | | |
2930 | | if( offset < 0 ) |
2931 | | { |
2932 | | libcerror_error_set( |
2933 | | error, |
2934 | | LIBCERROR_ERROR_DOMAIN_IO, |
2935 | | LIBCERROR_IO_ERROR_SEEK_FAILED, |
2936 | | "%s: invalid offset: %" PRIi64 " returned.", |
2937 | | function, |
2938 | | offset ); |
2939 | | |
2940 | | return( -1 ); |
2941 | | } |
2942 | | } |
2943 | | internal_file->current_offset = offset; |
2944 | | |
2945 | | if( internal_file->block_size != 0 ) |
2946 | | { |
2947 | | internal_file->current_offset += offset_remainder; |
2948 | | internal_file->block_data_offset = (size_t) offset_remainder; |
2949 | | internal_file->block_data_size = 0; |
2950 | | } |
2951 | | return( internal_file->current_offset ); |
2952 | | } |
2953 | | |
2954 | | #elif defined( HAVE_LSEEK ) |
2955 | | |
2956 | | /* Seeks a certain offset within the file |
2957 | | * This function uses the POSIX lseek function or equivalent |
2958 | | * Returns the offset if the seek is successful or -1 on error |
2959 | | */ |
2960 | | off64_t libcfile_file_seek_offset( |
2961 | | libcfile_file_t *file, |
2962 | | off64_t offset, |
2963 | | int whence, |
2964 | | libcerror_error_t **error ) |
2965 | 0 | { |
2966 | 0 | libcfile_internal_file_t *internal_file = NULL; |
2967 | 0 | static char *function = "libcfile_file_seek_offset"; |
2968 | 0 | off64_t offset_remainder = 0; |
2969 | |
|
2970 | 0 | if( file == NULL ) |
2971 | 0 | { |
2972 | 0 | libcerror_error_set( |
2973 | 0 | error, |
2974 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2975 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2976 | 0 | "%s: invalid file.", |
2977 | 0 | function ); |
2978 | |
|
2979 | 0 | return( -1 ); |
2980 | 0 | } |
2981 | 0 | internal_file = (libcfile_internal_file_t *) file; |
2982 | |
|
2983 | 0 | if( internal_file->descriptor == -1 ) |
2984 | 0 | { |
2985 | 0 | libcerror_error_set( |
2986 | 0 | error, |
2987 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
2988 | 0 | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
2989 | 0 | "%s: invalid file - missing descriptor.", |
2990 | 0 | function ); |
2991 | |
|
2992 | 0 | return( -1 ); |
2993 | 0 | } |
2994 | 0 | if( offset > (off64_t) INT64_MAX ) |
2995 | 0 | { |
2996 | 0 | libcerror_error_set( |
2997 | 0 | error, |
2998 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2999 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
3000 | 0 | "%s: invalid offset value exceeds maximum.", |
3001 | 0 | function ); |
3002 | |
|
3003 | 0 | return( -1 ); |
3004 | 0 | } |
3005 | 0 | if( ( whence != SEEK_CUR ) |
3006 | 0 | && ( whence != SEEK_END ) |
3007 | 0 | && ( whence != SEEK_SET ) ) |
3008 | 0 | { |
3009 | 0 | libcerror_error_set( |
3010 | 0 | error, |
3011 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3012 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
3013 | 0 | "%s: unsupported whence.", |
3014 | 0 | function ); |
3015 | |
|
3016 | 0 | return( -1 ); |
3017 | 0 | } |
3018 | 0 | if( internal_file->block_size != 0 ) |
3019 | 0 | { |
3020 | 0 | if( whence == SEEK_CUR ) |
3021 | 0 | { |
3022 | 0 | offset += internal_file->current_offset; |
3023 | 0 | } |
3024 | 0 | else if( whence == SEEK_END ) |
3025 | 0 | { |
3026 | 0 | offset += internal_file->size; |
3027 | 0 | } |
3028 | 0 | whence = SEEK_SET; |
3029 | 0 | offset_remainder = offset % internal_file->block_size; |
3030 | 0 | offset -= offset_remainder; |
3031 | 0 | } |
3032 | 0 | offset = lseek( |
3033 | 0 | internal_file->descriptor, |
3034 | 0 | (off_t) offset, |
3035 | 0 | whence ); |
3036 | |
|
3037 | 0 | if( offset < 0 ) |
3038 | 0 | { |
3039 | 0 | libcerror_system_set_error( |
3040 | 0 | error, |
3041 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
3042 | 0 | LIBCERROR_IO_ERROR_SEEK_FAILED, |
3043 | 0 | errno, |
3044 | 0 | "%s: unable to seek offset in file.", |
3045 | 0 | function ); |
3046 | |
|
3047 | 0 | return( -1 ); |
3048 | 0 | } |
3049 | 0 | internal_file->current_offset = offset; |
3050 | |
|
3051 | 0 | if( internal_file->block_size != 0 ) |
3052 | 0 | { |
3053 | 0 | internal_file->current_offset += offset_remainder; |
3054 | 0 | internal_file->block_data_offset = (size_t) offset_remainder; |
3055 | 0 | internal_file->block_data_size = 0; |
3056 | 0 | } |
3057 | 0 | return( internal_file->current_offset ); |
3058 | 0 | } |
3059 | | |
3060 | | #else |
3061 | | #error Missing file lseek function |
3062 | | #endif |
3063 | | |
3064 | | #if defined( WINAPI ) |
3065 | | |
3066 | | /* Resizes the file |
3067 | | * This function uses the WINAPI function for Windows XP (0x0501) or later |
3068 | | * or tries to dynamically call the function for Windows 2000 (0x0500) or earlier |
3069 | | * Returns 1 if successful or -1 on error |
3070 | | */ |
3071 | | int libcfile_file_resize( |
3072 | | libcfile_file_t *file, |
3073 | | size64_t size, |
3074 | | libcerror_error_t **error ) |
3075 | | { |
3076 | | libcfile_internal_file_t *internal_file = NULL; |
3077 | | static char *function = "libcfile_file_resize"; |
3078 | | off64_t offset = 0; |
3079 | | LARGE_INTEGER large_integer_offset = LIBCFILE_LARGE_INTEGER_ZERO; |
3080 | | DWORD error_code = 0; |
3081 | | |
3082 | | if( file == NULL ) |
3083 | | { |
3084 | | libcerror_error_set( |
3085 | | error, |
3086 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3087 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
3088 | | "%s: invalid file.", |
3089 | | function ); |
3090 | | |
3091 | | return( -1 ); |
3092 | | } |
3093 | | internal_file = (libcfile_internal_file_t *) file; |
3094 | | |
3095 | | if( internal_file->handle == INVALID_HANDLE_VALUE ) |
3096 | | { |
3097 | | libcerror_error_set( |
3098 | | error, |
3099 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
3100 | | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
3101 | | "%s: invalid file - missing handle.", |
3102 | | function ); |
3103 | | |
3104 | | return( -1 ); |
3105 | | } |
3106 | | if( size > (size64_t) INT64_MAX ) |
3107 | | { |
3108 | | libcerror_error_set( |
3109 | | error, |
3110 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3111 | | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
3112 | | "%s: invalid size value exceeds maximum.", |
3113 | | function ); |
3114 | | |
3115 | | return( -1 ); |
3116 | | } |
3117 | | #if defined( __BORLANDC__ ) && __BORLANDC__ <= 0x0520 |
3118 | | large_integer_offset.QuadPart = (LONGLONG) size; |
3119 | | #else |
3120 | | large_integer_offset.LowPart = (DWORD) ( 0x0ffffffffUL & size ); |
3121 | | large_integer_offset.HighPart = (LONG) ( size >> 32 ); |
3122 | | #endif |
3123 | | |
3124 | | #if ( WINVER <= 0x0500 ) |
3125 | | if( libcfile_SetFilePointerEx( |
3126 | | internal_file->handle, |
3127 | | large_integer_offset, |
3128 | | &large_integer_offset, |
3129 | | FILE_BEGIN ) == 0 ) |
3130 | | #else |
3131 | | if( SetFilePointerEx( |
3132 | | internal_file->handle, |
3133 | | large_integer_offset, |
3134 | | &large_integer_offset, |
3135 | | FILE_BEGIN ) == 0 ) |
3136 | | #endif |
3137 | | { |
3138 | | error_code = GetLastError(); |
3139 | | |
3140 | | libcerror_system_set_error( |
3141 | | error, |
3142 | | LIBCERROR_ERROR_DOMAIN_IO, |
3143 | | LIBCERROR_IO_ERROR_SEEK_FAILED, |
3144 | | error_code, |
3145 | | "%s: unable to seek offset in file.", |
3146 | | function ); |
3147 | | |
3148 | | return( -1 ); |
3149 | | } |
3150 | | #if defined( __BORLANDC__ ) && __BORLANDC__ <= 0x0520 |
3151 | | offset = (off64_t) large_integer_offset.QuadPart; |
3152 | | #else |
3153 | | offset = ( (off64_t) large_integer_offset.HighPart << 32 ) + large_integer_offset.LowPart; |
3154 | | #endif |
3155 | | |
3156 | | if( offset < 0 ) |
3157 | | { |
3158 | | libcerror_error_set( |
3159 | | error, |
3160 | | LIBCERROR_ERROR_DOMAIN_IO, |
3161 | | LIBCERROR_IO_ERROR_SEEK_FAILED, |
3162 | | "%s: invalid offset: %" PRIi64 " returned.", |
3163 | | function, |
3164 | | offset ); |
3165 | | |
3166 | | return( -1 ); |
3167 | | } |
3168 | | internal_file->current_offset = offset; |
3169 | | |
3170 | | #if ( WINVER <= 0x0500 ) |
3171 | | if( libcfile_SetEndOfFile( |
3172 | | internal_file->handle ) == 0 ) |
3173 | | #else |
3174 | | if( SetEndOfFile( |
3175 | | internal_file->handle ) == 0 ) |
3176 | | #endif |
3177 | | { |
3178 | | error_code = GetLastError(); |
3179 | | |
3180 | | libcerror_system_set_error( |
3181 | | error, |
3182 | | LIBCERROR_ERROR_DOMAIN_IO, |
3183 | | LIBCERROR_IO_ERROR_SEEK_FAILED, |
3184 | | error_code, |
3185 | | "%s: unable to resize file.", |
3186 | | function ); |
3187 | | |
3188 | | return( -1 ); |
3189 | | } |
3190 | | return( 1 ); |
3191 | | } |
3192 | | |
3193 | | #elif defined( HAVE_FTRUNCATE ) |
3194 | | |
3195 | | /* Resizes the file |
3196 | | * This function uses the POSIX truncate function or equivalent |
3197 | | * Returns 1 if successful or -1 on error |
3198 | | */ |
3199 | | int libcfile_file_resize( |
3200 | | libcfile_file_t *file, |
3201 | | size64_t size, |
3202 | | libcerror_error_t **error ) |
3203 | 0 | { |
3204 | 0 | libcfile_internal_file_t *internal_file = NULL; |
3205 | 0 | static char *function = "libcfile_file_resize"; |
3206 | 0 | off_t offset = 0; |
3207 | |
|
3208 | 0 | if( file == NULL ) |
3209 | 0 | { |
3210 | 0 | libcerror_error_set( |
3211 | 0 | error, |
3212 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3213 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
3214 | 0 | "%s: invalid file.", |
3215 | 0 | function ); |
3216 | |
|
3217 | 0 | return( -1 ); |
3218 | 0 | } |
3219 | 0 | internal_file = (libcfile_internal_file_t *) file; |
3220 | |
|
3221 | 0 | if( internal_file->descriptor == -1 ) |
3222 | 0 | { |
3223 | 0 | libcerror_error_set( |
3224 | 0 | error, |
3225 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
3226 | 0 | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
3227 | 0 | "%s: invalid file - missing descriptor.", |
3228 | 0 | function ); |
3229 | |
|
3230 | 0 | return( -1 ); |
3231 | 0 | } |
3232 | 0 | #if SIZEOF_OFF_T >= 8 |
3233 | 0 | if( size > (size64_t) INT64_MAX ) |
3234 | | #else |
3235 | | if( size > (size64_t) INT32_MAX ) |
3236 | | #endif |
3237 | 0 | { |
3238 | 0 | libcerror_error_set( |
3239 | 0 | error, |
3240 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3241 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
3242 | 0 | "%s: invalid size value exceeds maximum.", |
3243 | 0 | function ); |
3244 | |
|
3245 | 0 | return( -1 ); |
3246 | 0 | } |
3247 | 0 | if( ftruncate( |
3248 | 0 | internal_file->descriptor, |
3249 | 0 | (off_t) size ) != 0 ) |
3250 | 0 | { |
3251 | 0 | libcerror_system_set_error( |
3252 | 0 | error, |
3253 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
3254 | 0 | LIBCERROR_IO_ERROR_GENERIC, |
3255 | 0 | errno, |
3256 | 0 | "%s: unable to resize file.", |
3257 | 0 | function ); |
3258 | |
|
3259 | 0 | return( -1 ); |
3260 | 0 | } |
3261 | 0 | offset = lseek( |
3262 | 0 | internal_file->descriptor, |
3263 | 0 | 0, |
3264 | 0 | SEEK_CUR ); |
3265 | |
|
3266 | 0 | if( offset < 0 ) |
3267 | 0 | { |
3268 | 0 | libcerror_system_set_error( |
3269 | 0 | error, |
3270 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
3271 | 0 | LIBCERROR_IO_ERROR_SEEK_FAILED, |
3272 | 0 | errno, |
3273 | 0 | "%s: unable to seek offset in file.", |
3274 | 0 | function ); |
3275 | |
|
3276 | 0 | return( -1 ); |
3277 | 0 | } |
3278 | 0 | internal_file->current_offset = (off64_t) offset; |
3279 | |
|
3280 | 0 | return( 1 ); |
3281 | 0 | } |
3282 | | |
3283 | | #else |
3284 | | #error Missing file truncate function |
3285 | | #endif |
3286 | | |
3287 | | /* Checks if the file is open |
3288 | | * Returns 1 if open, 0 if not or -1 on error |
3289 | | */ |
3290 | | int libcfile_file_is_open( |
3291 | | libcfile_file_t *file, |
3292 | | libcerror_error_t **error ) |
3293 | 0 | { |
3294 | 0 | libcfile_internal_file_t *internal_file = NULL; |
3295 | 0 | static char *function = "libcfile_file_is_open"; |
3296 | |
|
3297 | 0 | if( file == NULL ) |
3298 | 0 | { |
3299 | 0 | libcerror_error_set( |
3300 | 0 | error, |
3301 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3302 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
3303 | 0 | "%s: invalid file.", |
3304 | 0 | function ); |
3305 | |
|
3306 | 0 | return( -1 ); |
3307 | 0 | } |
3308 | 0 | internal_file = (libcfile_internal_file_t *) file; |
3309 | |
|
3310 | | #if defined( WINAPI ) |
3311 | | if( internal_file->handle == INVALID_HANDLE_VALUE ) |
3312 | | #else |
3313 | 0 | if( internal_file->descriptor == -1 ) |
3314 | 0 | #endif |
3315 | 0 | { |
3316 | 0 | return( 0 ); |
3317 | 0 | } |
3318 | 0 | return( 1 ); |
3319 | 0 | } |
3320 | | |
3321 | | /* Retrieves the current offset in the file |
3322 | | * Returns 1 if successful or -1 on error |
3323 | | */ |
3324 | | int libcfile_file_get_offset( |
3325 | | libcfile_file_t *file, |
3326 | | off64_t *offset, |
3327 | | libcerror_error_t **error ) |
3328 | 0 | { |
3329 | 0 | libcfile_internal_file_t *internal_file = NULL; |
3330 | 0 | static char *function = "libcfile_file_get_offset"; |
3331 | |
|
3332 | 0 | if( file == NULL ) |
3333 | 0 | { |
3334 | 0 | libcerror_error_set( |
3335 | 0 | error, |
3336 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3337 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
3338 | 0 | "%s: invalid file.", |
3339 | 0 | function ); |
3340 | |
|
3341 | 0 | return( -1 ); |
3342 | 0 | } |
3343 | 0 | internal_file = (libcfile_internal_file_t *) file; |
3344 | |
|
3345 | | #if defined( WINAPI ) |
3346 | | if( internal_file->handle == INVALID_HANDLE_VALUE ) |
3347 | | { |
3348 | | libcerror_error_set( |
3349 | | error, |
3350 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
3351 | | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
3352 | | "%s: invalid file - missing handle.", |
3353 | | function ); |
3354 | | |
3355 | | return( -1 ); |
3356 | | } |
3357 | | #else |
3358 | 0 | if( internal_file->descriptor == -1 ) |
3359 | 0 | { |
3360 | 0 | libcerror_error_set( |
3361 | 0 | error, |
3362 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
3363 | 0 | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
3364 | 0 | "%s: invalid file - missing descriptor.", |
3365 | 0 | function ); |
3366 | |
|
3367 | 0 | return( -1 ); |
3368 | 0 | } |
3369 | 0 | #endif |
3370 | 0 | if( offset == NULL ) |
3371 | 0 | { |
3372 | 0 | libcerror_error_set( |
3373 | 0 | error, |
3374 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3375 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
3376 | 0 | "%s: invalid offset.", |
3377 | 0 | function ); |
3378 | |
|
3379 | 0 | return( -1 ); |
3380 | 0 | } |
3381 | 0 | *offset = internal_file->current_offset; |
3382 | |
|
3383 | 0 | return( 1 ); |
3384 | 0 | } |
3385 | | |
3386 | | #if defined( WINAPI ) |
3387 | | |
3388 | | #if !defined( IOCTL_DISK_GET_LENGTH_INFO ) |
3389 | | #define IOCTL_DISK_GET_LENGTH_INFO \ |
3390 | | CTL_CODE( IOCTL_DISK_BASE, 0x0017, METHOD_BUFFERED, FILE_READ_ACCESS ) |
3391 | | |
3392 | | typedef struct |
3393 | | { |
3394 | | LARGE_INTEGER Length; |
3395 | | } |
3396 | | GET_LENGTH_INFORMATION; |
3397 | | |
3398 | | #endif /* !defined( IOCTL_DISK_GET_LENGTH_INFO ) */ |
3399 | | |
3400 | | /* Retrieves the size of the file |
3401 | | * This function uses the WINAPI function for Windows XP (0x0501) or later |
3402 | | * or tries to dynamically call the function for Windows 2000 (0x0500) or earlier |
3403 | | * Returns 1 if successful or -1 on error |
3404 | | */ |
3405 | | int libcfile_internal_file_get_size( |
3406 | | libcfile_internal_file_t *internal_file, |
3407 | | size64_t *size, |
3408 | | libcerror_error_t **error ) |
3409 | | { |
3410 | | DISK_GEOMETRY disk_geometry; |
3411 | | GET_LENGTH_INFORMATION length_information; |
3412 | | |
3413 | | static char *function = "libcfile_internal_file_get_size"; |
3414 | | LARGE_INTEGER large_integer_size = LIBCFILE_LARGE_INTEGER_ZERO; |
3415 | | size_t read_count = 0; |
3416 | | uint32_t error_code = 0; |
3417 | | int result = 0; |
3418 | | |
3419 | | if( internal_file == NULL ) |
3420 | | { |
3421 | | libcerror_error_set( |
3422 | | error, |
3423 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3424 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
3425 | | "%s: invalid file.", |
3426 | | function ); |
3427 | | |
3428 | | return( -1 ); |
3429 | | } |
3430 | | if( internal_file->handle == INVALID_HANDLE_VALUE ) |
3431 | | { |
3432 | | libcerror_error_set( |
3433 | | error, |
3434 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
3435 | | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
3436 | | "%s: invalid file - missing handle.", |
3437 | | function ); |
3438 | | |
3439 | | return( -1 ); |
3440 | | } |
3441 | | if( size == NULL ) |
3442 | | { |
3443 | | libcerror_error_set( |
3444 | | error, |
3445 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3446 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
3447 | | "%s: invalid size.", |
3448 | | function ); |
3449 | | |
3450 | | return( -1 ); |
3451 | | } |
3452 | | result = libcfile_file_is_device( |
3453 | | (libcfile_file_t *) internal_file, |
3454 | | error ); |
3455 | | |
3456 | | if( result == -1 ) |
3457 | | { |
3458 | | libcerror_error_set( |
3459 | | error, |
3460 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
3461 | | LIBCERROR_RUNTIME_ERROR_GET_FAILED, |
3462 | | "%s: unable to determine if file is a device.", |
3463 | | function ); |
3464 | | |
3465 | | return( -1 ); |
3466 | | } |
3467 | | else if( result != 0 ) |
3468 | | { |
3469 | | read_count = libcfile_internal_file_io_control_read_with_error_code( |
3470 | | internal_file, |
3471 | | IOCTL_DISK_GET_LENGTH_INFO, |
3472 | | NULL, |
3473 | | 0, |
3474 | | (uint8_t *) &length_information, |
3475 | | sizeof( GET_LENGTH_INFORMATION ), |
3476 | | &error_code, |
3477 | | error ); |
3478 | | |
3479 | | if( read_count == -1 ) |
3480 | | { |
3481 | | libcerror_error_set( |
3482 | | error, |
3483 | | LIBCERROR_ERROR_DOMAIN_IO, |
3484 | | LIBCERROR_IO_ERROR_IOCTL_FAILED, |
3485 | | "%s: unable to query device for: IOCTL_DISK_GET_LENGTH_INFO.", |
3486 | | function ); |
3487 | | |
3488 | | #if defined( HAVE_DEBUG_OUTPUT ) |
3489 | | if( libcnotify_verbose != 0 ) |
3490 | | { |
3491 | | if( ( error != NULL ) |
3492 | | && ( *error != NULL ) ) |
3493 | | { |
3494 | | libcnotify_print_error_backtrace( |
3495 | | *error ); |
3496 | | } |
3497 | | } |
3498 | | #endif |
3499 | | libcerror_error_free( |
3500 | | error ); |
3501 | | |
3502 | | if( error_code == ERROR_NOT_SUPPORTED ) |
3503 | | { |
3504 | | /* A floppy device does not support IOCTL_DISK_GET_LENGTH_INFO |
3505 | | */ |
3506 | | read_count = libcfile_internal_file_io_control_read_with_error_code( |
3507 | | internal_file, |
3508 | | IOCTL_DISK_GET_DRIVE_GEOMETRY, |
3509 | | NULL, |
3510 | | 0, |
3511 | | (uint8_t *) &disk_geometry, |
3512 | | sizeof( DISK_GEOMETRY ), |
3513 | | &error_code, |
3514 | | error ); |
3515 | | |
3516 | | if( read_count == -1 ) |
3517 | | { |
3518 | | libcerror_error_set( |
3519 | | error, |
3520 | | LIBCERROR_ERROR_DOMAIN_IO, |
3521 | | LIBCERROR_IO_ERROR_IOCTL_FAILED, |
3522 | | "%s: unable to query device for: IOCTL_DISK_GET_DRIVE_GEOMETRY.", |
3523 | | function ); |
3524 | | |
3525 | | #if defined( HAVE_DEBUG_OUTPUT ) |
3526 | | if( libcnotify_verbose != 0 ) |
3527 | | { |
3528 | | if( ( error != NULL ) |
3529 | | && ( *error != NULL ) ) |
3530 | | { |
3531 | | libcnotify_print_error_backtrace( |
3532 | | *error ); |
3533 | | } |
3534 | | } |
3535 | | #endif |
3536 | | libcerror_error_free( |
3537 | | error ); |
3538 | | } |
3539 | | else |
3540 | | { |
3541 | | *size = disk_geometry.Cylinders.QuadPart; |
3542 | | *size *= disk_geometry.TracksPerCylinder; |
3543 | | *size *= disk_geometry.SectorsPerTrack; |
3544 | | *size *= disk_geometry.BytesPerSector; |
3545 | | } |
3546 | | } |
3547 | | } |
3548 | | else |
3549 | | { |
3550 | | *size = (size64_t) length_information.Length.HighPart << 32; |
3551 | | *size += (uint32_t) length_information.Length.LowPart; |
3552 | | } |
3553 | | } |
3554 | | else |
3555 | | { |
3556 | | #if ( WINVER <= 0x0500 ) |
3557 | | if( libcfile_GetFileSizeEx( |
3558 | | internal_file->handle, |
3559 | | &large_integer_size ) == 0 ) |
3560 | | #else |
3561 | | if( GetFileSizeEx( |
3562 | | internal_file->handle, |
3563 | | &large_integer_size ) == 0 ) |
3564 | | #endif |
3565 | | { |
3566 | | libcerror_error_set( |
3567 | | error, |
3568 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
3569 | | LIBCERROR_RUNTIME_ERROR_GET_FAILED, |
3570 | | "%s: unable to retrieve file size.", |
3571 | | function ); |
3572 | | |
3573 | | return( -1 ); |
3574 | | } |
3575 | | #if defined( __BORLANDC__ ) && __BORLANDC__ <= 0x520 |
3576 | | *size = (size64_t) large_integer_size.QuadPart; |
3577 | | #else |
3578 | | *size = (size64_t) large_integer_size.HighPart << 32; |
3579 | | *size += (uint32_t) large_integer_size.LowPart; |
3580 | | #endif |
3581 | | } |
3582 | | return( 1 ); |
3583 | | } |
3584 | | |
3585 | | #elif defined( HAVE_FSTAT ) |
3586 | | |
3587 | | /* Retrieves the size of the file |
3588 | | * This function uses the POSIX fstat function or equivalent |
3589 | | * Returns 1 if successful or -1 on error |
3590 | | */ |
3591 | | int libcfile_internal_file_get_size( |
3592 | | libcfile_internal_file_t *internal_file, |
3593 | | size64_t *size, |
3594 | | libcerror_error_t **error ) |
3595 | 0 | { |
3596 | 0 | struct stat file_statistics; |
3597 | |
|
3598 | 0 | static char *function = "libcfile_internal_file_get_size"; |
3599 | 0 | size64_t safe_size = 0; |
3600 | 0 | ssize_t read_count = 0; |
3601 | 0 | off64_t current_offset = 0; |
3602 | 0 | off64_t offset = 0; |
3603 | |
|
3604 | 0 | #if defined( BLKGETSIZE64 ) || defined( DIOCGMEDIASIZE ) || defined( DIOCGDINFO ) || ( defined( DKIOCGETBLOCKCOUNT ) && defined( DKIOCGETBLOCKSIZE ) ) |
3605 | 0 | uint32_t error_code = 0; |
3606 | 0 | #endif |
3607 | |
|
3608 | | #if !defined( DIOCGMEDIASIZE ) && defined( DIOCGDINFO ) |
3609 | | struct disklabel disk_label; |
3610 | | #endif |
3611 | | #if defined( DKIOCGETBLOCKCOUNT ) && defined( DKIOCGETBLOCKSIZE ) |
3612 | | uint64_t block_count = 0; |
3613 | | uint32_t bytes_per_sector = 0; |
3614 | | #endif |
3615 | |
|
3616 | 0 | if( internal_file == NULL ) |
3617 | 0 | { |
3618 | 0 | libcerror_error_set( |
3619 | 0 | error, |
3620 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3621 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
3622 | 0 | "%s: invalid file.", |
3623 | 0 | function ); |
3624 | |
|
3625 | 0 | return( -1 ); |
3626 | 0 | } |
3627 | 0 | if( internal_file->descriptor == -1 ) |
3628 | 0 | { |
3629 | 0 | libcerror_error_set( |
3630 | 0 | error, |
3631 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
3632 | 0 | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
3633 | 0 | "%s: invalid file - missing descriptor.", |
3634 | 0 | function ); |
3635 | |
|
3636 | 0 | return( -1 ); |
3637 | 0 | } |
3638 | 0 | if( size == NULL ) |
3639 | 0 | { |
3640 | 0 | libcerror_error_set( |
3641 | 0 | error, |
3642 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3643 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
3644 | 0 | "%s: invalid size.", |
3645 | 0 | function ); |
3646 | |
|
3647 | 0 | return( -1 ); |
3648 | 0 | } |
3649 | 0 | if( memory_set( |
3650 | 0 | &file_statistics, |
3651 | 0 | 0, |
3652 | 0 | sizeof( struct stat ) ) == NULL ) |
3653 | 0 | { |
3654 | 0 | libcerror_error_set( |
3655 | 0 | error, |
3656 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
3657 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
3658 | 0 | "%s: unable to clear file statistics.", |
3659 | 0 | function ); |
3660 | |
|
3661 | 0 | return( -1 ); |
3662 | 0 | } |
3663 | 0 | if( fstat( |
3664 | 0 | internal_file->descriptor, |
3665 | 0 | &file_statistics ) != 0 ) |
3666 | 0 | { |
3667 | 0 | libcerror_error_set( |
3668 | 0 | error, |
3669 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
3670 | 0 | LIBCERROR_RUNTIME_ERROR_GET_FAILED, |
3671 | 0 | "%s: unable to retrieve file statistics.", |
3672 | 0 | function ); |
3673 | |
|
3674 | 0 | return( -1 ); |
3675 | 0 | } |
3676 | 0 | if( S_ISBLK( file_statistics.st_mode ) |
3677 | 0 | || S_ISCHR( file_statistics.st_mode ) ) |
3678 | 0 | { |
3679 | 0 | #if defined( BLKGETSIZE64 ) |
3680 | 0 | read_count = libcfile_internal_file_io_control_read_with_error_code( |
3681 | 0 | internal_file, |
3682 | 0 | (uint32_t) BLKGETSIZE64, |
3683 | 0 | NULL, |
3684 | 0 | 0, |
3685 | 0 | (uint8_t *) &safe_size, |
3686 | 0 | 8, |
3687 | 0 | &error_code, |
3688 | 0 | error ); |
3689 | |
|
3690 | 0 | if( read_count == -1 ) |
3691 | 0 | { |
3692 | 0 | libcerror_error_set( |
3693 | 0 | error, |
3694 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
3695 | 0 | LIBCERROR_IO_ERROR_IOCTL_FAILED, |
3696 | 0 | "%s: unable to query device for: BLKGETSIZE64.", |
3697 | 0 | function ); |
3698 | |
|
3699 | | #if defined( HAVE_DEBUG_OUTPUT ) |
3700 | | if( libcnotify_verbose != 0 ) |
3701 | | { |
3702 | | if( ( error != NULL ) |
3703 | | && ( *error != NULL ) ) |
3704 | | { |
3705 | | libcnotify_print_error_backtrace( |
3706 | | *error ); |
3707 | | } |
3708 | | } |
3709 | | #endif |
3710 | 0 | libcerror_error_free( |
3711 | 0 | error ); |
3712 | 0 | } |
3713 | | #elif defined( DIOCGMEDIASIZE ) |
3714 | | read_count = libcfile_internal_file_io_control_read_with_error_code( |
3715 | | internal_file, |
3716 | | (uint32_t) DIOCGMEDIASIZE, |
3717 | | NULL, |
3718 | | 0, |
3719 | | (uint8_t *) &safe_size, |
3720 | | 8, |
3721 | | &error_code, |
3722 | | error ); |
3723 | | |
3724 | | if( read_count == -1 ) |
3725 | | { |
3726 | | libcerror_error_set( |
3727 | | error, |
3728 | | LIBCERROR_ERROR_DOMAIN_IO, |
3729 | | LIBCERROR_IO_ERROR_IOCTL_FAILED, |
3730 | | "%s: unable to query device for: DIOCGMEDIASIZE.", |
3731 | | function ); |
3732 | | |
3733 | | #if defined( HAVE_DEBUG_OUTPUT ) |
3734 | | if( libcnotify_verbose != 0 ) |
3735 | | { |
3736 | | if( ( error != NULL ) |
3737 | | && ( *error != NULL ) ) |
3738 | | { |
3739 | | libcnotify_print_error_backtrace( |
3740 | | *error ); |
3741 | | } |
3742 | | } |
3743 | | #endif |
3744 | | libcerror_error_free( |
3745 | | error ); |
3746 | | } |
3747 | | #elif defined( DIOCGDINFO ) |
3748 | | read_count = libcfile_internal_file_io_control_read_with_error_code( |
3749 | | internal_file, |
3750 | | (uint32_t) DIOCGDINFO, |
3751 | | NULL, |
3752 | | 0, |
3753 | | (uint8_t *) &disk_label, |
3754 | | sizeof( struct disklabel ), |
3755 | | &error_code, |
3756 | | error ); |
3757 | | |
3758 | | if( read_count == -1 ) |
3759 | | { |
3760 | | libcerror_error_set( |
3761 | | error, |
3762 | | LIBCERROR_ERROR_DOMAIN_IO, |
3763 | | LIBCERROR_IO_ERROR_IOCTL_FAILED, |
3764 | | "%s: unable to query device for: DIOCGDINFO.", |
3765 | | function ); |
3766 | | |
3767 | | #if defined( HAVE_DEBUG_OUTPUT ) |
3768 | | if( libcnotify_verbose != 0 ) |
3769 | | { |
3770 | | if( ( error != NULL ) |
3771 | | && ( *error != NULL ) ) |
3772 | | { |
3773 | | libcnotify_print_error_backtrace( |
3774 | | *error ); |
3775 | | } |
3776 | | } |
3777 | | #endif |
3778 | | libcerror_error_free( |
3779 | | error ); |
3780 | | } |
3781 | | else |
3782 | | { |
3783 | | safe_size = disk_label.d_secperunit * disk_label.d_secsize; |
3784 | | } |
3785 | | #elif defined( DKIOCGETBLOCKCOUNT ) && defined( DKIOCGETBLOCKSIZE ) |
3786 | | read_count = libcfile_internal_file_io_control_read_with_error_code( |
3787 | | internal_file, |
3788 | | (uint32_t) DKIOCGETBLOCKSIZE, |
3789 | | NULL, |
3790 | | 0, |
3791 | | (uint8_t *) &bytes_per_sector, |
3792 | | 4, |
3793 | | &error_code, |
3794 | | error ); |
3795 | | |
3796 | | if( read_count == -1 ) |
3797 | | { |
3798 | | libcerror_error_set( |
3799 | | error, |
3800 | | LIBCERROR_ERROR_DOMAIN_IO, |
3801 | | LIBCERROR_IO_ERROR_IOCTL_FAILED, |
3802 | | "%s: unable to query device for: DKIOCGETBLOCKSIZE.", |
3803 | | function ); |
3804 | | |
3805 | | #if defined( HAVE_DEBUG_OUTPUT ) |
3806 | | if( libcnotify_verbose != 0 ) |
3807 | | { |
3808 | | if( ( error != NULL ) |
3809 | | && ( *error != NULL ) ) |
3810 | | { |
3811 | | libcnotify_print_error_backtrace( |
3812 | | *error ); |
3813 | | } |
3814 | | } |
3815 | | #endif |
3816 | | libcerror_error_free( |
3817 | | error ); |
3818 | | } |
3819 | | else |
3820 | | { |
3821 | | read_count = libcfile_internal_file_io_control_read_with_error_code( |
3822 | | internal_file, |
3823 | | (uint32_t) DKIOCGETBLOCKCOUNT, |
3824 | | NULL, |
3825 | | 0, |
3826 | | (uint8_t *) &block_count, |
3827 | | 4, |
3828 | | &error_code, |
3829 | | error ); |
3830 | | |
3831 | | if( read_count == -1 ) |
3832 | | { |
3833 | | libcerror_error_set( |
3834 | | error, |
3835 | | LIBCERROR_ERROR_DOMAIN_IO, |
3836 | | LIBCERROR_IO_ERROR_IOCTL_FAILED, |
3837 | | "%s: unable to query device for: DKIOCGETBLOCKCOUNT.", |
3838 | | function ); |
3839 | | |
3840 | | #if defined( HAVE_DEBUG_OUTPUT ) |
3841 | | if( libcnotify_verbose != 0 ) |
3842 | | { |
3843 | | if( ( error != NULL ) |
3844 | | && ( *error != NULL ) ) |
3845 | | { |
3846 | | libcnotify_print_error_backtrace( |
3847 | | *error ); |
3848 | | } |
3849 | | } |
3850 | | #endif |
3851 | | libcerror_error_free( |
3852 | | error ); |
3853 | | } |
3854 | | else |
3855 | | { |
3856 | | #if defined( HAVE_DEBUG_OUTPUT ) |
3857 | | if( libcnotify_verbose != 0 ) |
3858 | | { |
3859 | | libcnotify_printf( |
3860 | | "%s: block size: %" PRIu32 " block count: %" PRIu64 " ", |
3861 | | function, |
3862 | | bytes_per_sector, |
3863 | | block_count ); |
3864 | | } |
3865 | | #endif |
3866 | | safe_size = (size64_t) ( block_count * bytes_per_sector ); |
3867 | | } |
3868 | | } |
3869 | | #endif /* defined( BLKGETSIZE64 ) || defined( DIOCGMEDIASIZE ) || defined( DIOCGDINFO ) || ( defined( DKIOCGETBLOCKCOUNT ) && defined( DKIOCGETBLOCKSIZE ) ) */ |
3870 | |
|
3871 | 0 | if( read_count <= 0 ) |
3872 | 0 | { |
3873 | | /* Try to seek the end of the file and determine the size based on the offset |
3874 | | */ |
3875 | 0 | if( libcfile_file_get_offset( |
3876 | 0 | (libcfile_file_t *) internal_file, |
3877 | 0 | ¤t_offset, |
3878 | 0 | error ) != 1 ) |
3879 | 0 | { |
3880 | 0 | libcerror_error_set( |
3881 | 0 | error, |
3882 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
3883 | 0 | LIBCERROR_RUNTIME_ERROR_GET_FAILED, |
3884 | 0 | "%s: unable to retrieve current offset.", |
3885 | 0 | function ); |
3886 | |
|
3887 | 0 | return( -1 ); |
3888 | 0 | } |
3889 | 0 | offset = libcfile_file_seek_offset( |
3890 | 0 | (libcfile_file_t *) internal_file, |
3891 | 0 | 0, |
3892 | 0 | SEEK_END, |
3893 | 0 | error ); |
3894 | |
|
3895 | 0 | if( offset == -1 ) |
3896 | 0 | { |
3897 | 0 | libcerror_error_set( |
3898 | 0 | error, |
3899 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
3900 | 0 | LIBCERROR_IO_ERROR_SEEK_FAILED, |
3901 | 0 | "%s: unable to seek end of file.", |
3902 | 0 | function ); |
3903 | |
|
3904 | 0 | return( -1 ); |
3905 | 0 | } |
3906 | 0 | safe_size = (size64_t) offset; |
3907 | |
|
3908 | 0 | offset = libcfile_file_seek_offset( |
3909 | 0 | (libcfile_file_t *) internal_file, |
3910 | 0 | current_offset, |
3911 | 0 | SEEK_SET, |
3912 | 0 | error ); |
3913 | |
|
3914 | 0 | if( offset == -1 ) |
3915 | 0 | { |
3916 | 0 | libcerror_error_set( |
3917 | 0 | error, |
3918 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
3919 | 0 | LIBCERROR_IO_ERROR_SEEK_FAILED, |
3920 | 0 | "%s: unable to seek offset: %" PRIi64 ".", |
3921 | 0 | function, |
3922 | 0 | current_offset ); |
3923 | |
|
3924 | 0 | return( -1 ); |
3925 | 0 | } |
3926 | 0 | } |
3927 | | #if defined( HAVE_DEBUG_OUTPUT ) |
3928 | | if( libcnotify_verbose != 0 ) |
3929 | | { |
3930 | | libcnotify_printf( |
3931 | | "%s: device media size: %" PRIu64 "\n", |
3932 | | function, |
3933 | | safe_size ); |
3934 | | } |
3935 | | #endif |
3936 | 0 | } |
3937 | 0 | else |
3938 | 0 | { |
3939 | 0 | safe_size = (size64_t) file_statistics.st_size; |
3940 | 0 | } |
3941 | 0 | *size = safe_size; |
3942 | |
|
3943 | 0 | return( 1 ); |
3944 | 0 | } |
3945 | | |
3946 | | #else |
3947 | | #error Missing file get size function |
3948 | | #endif |
3949 | | |
3950 | | /* Retrieves the size of the file |
3951 | | * Returns 1 if successful or -1 on error |
3952 | | */ |
3953 | | int libcfile_file_get_size( |
3954 | | libcfile_file_t *file, |
3955 | | size64_t *size, |
3956 | | libcerror_error_t **error ) |
3957 | 0 | { |
3958 | 0 | libcfile_internal_file_t *internal_file = NULL; |
3959 | 0 | static char *function = "libcfile_file_get_size"; |
3960 | |
|
3961 | 0 | if( file == NULL ) |
3962 | 0 | { |
3963 | 0 | libcerror_error_set( |
3964 | 0 | error, |
3965 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3966 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
3967 | 0 | "%s: invalid file.", |
3968 | 0 | function ); |
3969 | |
|
3970 | 0 | return( -1 ); |
3971 | 0 | } |
3972 | 0 | internal_file = (libcfile_internal_file_t *) file; |
3973 | |
|
3974 | 0 | if( size == NULL ) |
3975 | 0 | { |
3976 | 0 | libcerror_error_set( |
3977 | 0 | error, |
3978 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3979 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
3980 | 0 | "%s: invalid size.", |
3981 | 0 | function ); |
3982 | |
|
3983 | 0 | return( -1 ); |
3984 | 0 | } |
3985 | 0 | *size = internal_file->size; |
3986 | |
|
3987 | 0 | return( 1 ); |
3988 | 0 | } |
3989 | | |
3990 | | #if defined( WINAPI ) |
3991 | | |
3992 | | /* Determines if a file is a device |
3993 | | * This function uses the WINAPI function for Windows XP (0x0501) or later |
3994 | | * or tries to dynamically call the function for Windows 2000 (0x0500) or earlier |
3995 | | * Returns 1 if true, 0 if not or -1 on error |
3996 | | */ |
3997 | | int libcfile_file_is_device( |
3998 | | libcfile_file_t *file, |
3999 | | libcerror_error_t **error ) |
4000 | | { |
4001 | | libcfile_internal_file_t *internal_file = NULL; |
4002 | | static char *function = "libcfile_file_is_device"; |
4003 | | DWORD file_type = 0; |
4004 | | int result = 0; |
4005 | | |
4006 | | if( file == NULL ) |
4007 | | { |
4008 | | libcerror_error_set( |
4009 | | error, |
4010 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
4011 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
4012 | | "%s: invalid file.", |
4013 | | function ); |
4014 | | |
4015 | | return( -1 ); |
4016 | | } |
4017 | | internal_file = (libcfile_internal_file_t *) file; |
4018 | | |
4019 | | if( internal_file->handle == INVALID_HANDLE_VALUE ) |
4020 | | { |
4021 | | libcerror_error_set( |
4022 | | error, |
4023 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
4024 | | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
4025 | | "%s: invalid file - missing handle.", |
4026 | | function ); |
4027 | | |
4028 | | return( -1 ); |
4029 | | } |
4030 | | /* TODO what about FILE_ATTRIBUTE_DEVICE using GetFileAttributes() */ |
4031 | | |
4032 | | /* Use the GetFileType function to rule out certain file types |
4033 | | * like pipes, sockets, etc. |
4034 | | */ |
4035 | | #if ( WINVER <= 0x0500 ) |
4036 | | file_type = libcfile_GetFileType( |
4037 | | internal_file->handle ); |
4038 | | #else |
4039 | | file_type = GetFileType( |
4040 | | internal_file->handle ); |
4041 | | #endif |
4042 | | |
4043 | | if( file_type == FILE_TYPE_UNKNOWN ) |
4044 | | { |
4045 | | libcerror_error_set( |
4046 | | error, |
4047 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
4048 | | LIBCERROR_RUNTIME_ERROR_GET_FAILED, |
4049 | | "%s: unable to determine file type.", |
4050 | | function ); |
4051 | | |
4052 | | return( -1 ); |
4053 | | } |
4054 | | else if( file_type == FILE_TYPE_DISK ) |
4055 | | { |
4056 | | if( internal_file->is_device_filename ) |
4057 | | { |
4058 | | result = 1; |
4059 | | } |
4060 | | } |
4061 | | return( result ); |
4062 | | } |
4063 | | |
4064 | | #elif defined( HAVE_FSTAT ) |
4065 | | |
4066 | | /* Determines if a file is a device |
4067 | | * This function uses the POSIX fstat function or equivalent |
4068 | | * Returns 1 if true, 0 if not or -1 on error |
4069 | | */ |
4070 | | int libcfile_file_is_device( |
4071 | | libcfile_file_t *file, |
4072 | | libcerror_error_t **error ) |
4073 | 0 | { |
4074 | 0 | struct stat file_statistics; |
4075 | |
|
4076 | 0 | libcfile_internal_file_t *internal_file = NULL; |
4077 | 0 | static char *function = "libcfile_file_is_device"; |
4078 | 0 | int result = 0; |
4079 | |
|
4080 | 0 | if( file == NULL ) |
4081 | 0 | { |
4082 | 0 | libcerror_error_set( |
4083 | 0 | error, |
4084 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
4085 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
4086 | 0 | "%s: invalid file.", |
4087 | 0 | function ); |
4088 | |
|
4089 | 0 | return( -1 ); |
4090 | 0 | } |
4091 | 0 | internal_file = (libcfile_internal_file_t *) file; |
4092 | |
|
4093 | 0 | if( internal_file->descriptor == -1 ) |
4094 | 0 | { |
4095 | 0 | libcerror_error_set( |
4096 | 0 | error, |
4097 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
4098 | 0 | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
4099 | 0 | "%s: invalid file - missing descriptor.", |
4100 | 0 | function ); |
4101 | |
|
4102 | 0 | return( -1 ); |
4103 | 0 | } |
4104 | 0 | if( memory_set( |
4105 | 0 | &file_statistics, |
4106 | 0 | 0, |
4107 | 0 | sizeof( struct stat ) ) == NULL ) |
4108 | 0 | { |
4109 | 0 | libcerror_error_set( |
4110 | 0 | error, |
4111 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
4112 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
4113 | 0 | "%s: unable to clear file statistics.", |
4114 | 0 | function ); |
4115 | |
|
4116 | 0 | return( -1 ); |
4117 | 0 | } |
4118 | 0 | if( fstat( |
4119 | 0 | internal_file->descriptor, |
4120 | 0 | &file_statistics ) != 0 ) |
4121 | 0 | { |
4122 | 0 | libcerror_error_set( |
4123 | 0 | error, |
4124 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
4125 | 0 | LIBCERROR_RUNTIME_ERROR_GET_FAILED, |
4126 | 0 | "%s: unable to retrieve file statistics.", |
4127 | 0 | function ); |
4128 | |
|
4129 | 0 | return( -1 ); |
4130 | 0 | } |
4131 | 0 | if( S_ISBLK( file_statistics.st_mode ) |
4132 | 0 | || S_ISCHR( file_statistics.st_mode ) ) |
4133 | 0 | { |
4134 | 0 | result = 1; |
4135 | 0 | } |
4136 | 0 | return( result ); |
4137 | 0 | } |
4138 | | |
4139 | | #else |
4140 | | #error Missing file is device function |
4141 | | #endif |
4142 | | |
4143 | | #if defined( HAVE_IOCTL ) || defined( WINAPI ) |
4144 | | |
4145 | | /* Read data from a device file using IO control |
4146 | | * This function uses the POSIX ioctl function or WINAPI DeviceIoControl |
4147 | | * Returns the number of bytes read if successful or -1 on error |
4148 | | */ |
4149 | | ssize_t libcfile_internal_file_io_control_read_with_error_code( |
4150 | | libcfile_internal_file_t *internal_file, |
4151 | | uint32_t control_code, |
4152 | | uint8_t *control_data, |
4153 | | size_t control_data_size, |
4154 | | uint8_t *data, |
4155 | | size_t data_size, |
4156 | | uint32_t *error_code, |
4157 | | libcerror_error_t **error ) |
4158 | 0 | { |
4159 | 0 | static char *function = "libcfile_internal_file_io_control_read_with_error_code"; |
4160 | |
|
4161 | | #if defined( WINAPI ) |
4162 | | BOOL result = 0; |
4163 | | DWORD response_count = 0; |
4164 | | #endif |
4165 | |
|
4166 | 0 | if( internal_file == NULL ) |
4167 | 0 | { |
4168 | 0 | libcerror_error_set( |
4169 | 0 | error, |
4170 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
4171 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
4172 | 0 | "%s: invalid file.", |
4173 | 0 | function ); |
4174 | |
|
4175 | 0 | return( -1 ); |
4176 | 0 | } |
4177 | | #if defined( WINAPI ) |
4178 | | if( internal_file->handle == INVALID_HANDLE_VALUE ) |
4179 | | { |
4180 | | libcerror_error_set( |
4181 | | error, |
4182 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
4183 | | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
4184 | | "%s: invalid file - missing handle.", |
4185 | | function ); |
4186 | | |
4187 | | return( -1 ); |
4188 | | } |
4189 | | #else |
4190 | 0 | if( internal_file->descriptor == -1 ) |
4191 | 0 | { |
4192 | 0 | libcerror_error_set( |
4193 | 0 | error, |
4194 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
4195 | 0 | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
4196 | 0 | "%s: invalid file - missing descriptor.", |
4197 | 0 | function ); |
4198 | |
|
4199 | 0 | return( -1 ); |
4200 | 0 | } |
4201 | 0 | #endif |
4202 | 0 | if( control_data == NULL ) |
4203 | 0 | { |
4204 | 0 | if( control_data_size != 0 ) |
4205 | 0 | { |
4206 | 0 | libcerror_error_set( |
4207 | 0 | error, |
4208 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
4209 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
4210 | 0 | "%s: invalid control data size value exceeds maximum.", |
4211 | 0 | function ); |
4212 | |
|
4213 | 0 | return( -1 ); |
4214 | 0 | } |
4215 | 0 | } |
4216 | 0 | else |
4217 | 0 | { |
4218 | 0 | #if ( UINT32_MAX < SSIZE_MAX ) |
4219 | 0 | if( control_data_size > (size_t) UINT32_MAX ) |
4220 | | #else |
4221 | | if( control_data_size > (size_t) SSIZE_MAX ) |
4222 | | #endif |
4223 | 0 | { |
4224 | 0 | libcerror_error_set( |
4225 | 0 | error, |
4226 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
4227 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
4228 | 0 | "%s: invalid control data size value exceeds maximum.", |
4229 | 0 | function ); |
4230 | |
|
4231 | 0 | return( -1 ); |
4232 | 0 | } |
4233 | 0 | } |
4234 | 0 | if( data == NULL ) |
4235 | 0 | { |
4236 | 0 | if( data_size != 0 ) |
4237 | 0 | { |
4238 | 0 | libcerror_error_set( |
4239 | 0 | error, |
4240 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
4241 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
4242 | 0 | "%s: invalid data size value exceeds maximum.", |
4243 | 0 | function ); |
4244 | |
|
4245 | 0 | return( -1 ); |
4246 | 0 | } |
4247 | 0 | } |
4248 | 0 | else |
4249 | 0 | { |
4250 | 0 | #if ( UINT32_MAX < SSIZE_MAX ) |
4251 | 0 | if( data_size > (size_t) UINT32_MAX ) |
4252 | | #else |
4253 | | if( data_size > (size_t) SSIZE_MAX ) |
4254 | | #endif |
4255 | 0 | { |
4256 | 0 | libcerror_error_set( |
4257 | 0 | error, |
4258 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
4259 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
4260 | 0 | "%s: invalid data size value exceeds maximum.", |
4261 | 0 | function ); |
4262 | |
|
4263 | 0 | return( -1 ); |
4264 | 0 | } |
4265 | 0 | } |
4266 | 0 | if( error_code == NULL ) |
4267 | 0 | { |
4268 | 0 | libcerror_error_set( |
4269 | 0 | error, |
4270 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
4271 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
4272 | 0 | "%s: invalid error code.", |
4273 | 0 | function ); |
4274 | |
|
4275 | 0 | return( -1 ); |
4276 | 0 | } |
4277 | | #if defined( WINAPI ) |
4278 | | result = DeviceIoControl( |
4279 | | internal_file->handle, |
4280 | | (DWORD) control_code, |
4281 | | control_data, |
4282 | | (DWORD) control_data_size, |
4283 | | data, |
4284 | | (DWORD) data_size, |
4285 | | &response_count, |
4286 | | NULL ); |
4287 | | |
4288 | | if( result == FALSE ) |
4289 | | { |
4290 | | *error_code = (uint32_t) GetLastError(); |
4291 | | |
4292 | | /* TODO: handle if( *error_code == ERROR_MORE_DATA ) */ |
4293 | | |
4294 | | libcerror_system_set_error( |
4295 | | error, |
4296 | | LIBCERROR_ERROR_DOMAIN_IO, |
4297 | | LIBCERROR_IO_ERROR_IOCTL_FAILED, |
4298 | | *error_code, |
4299 | | "%s: unable to IO control device.", |
4300 | | function ); |
4301 | | |
4302 | | return( -1 ); |
4303 | | } |
4304 | | #if ( SSIZE_MAX < UINT32_MAX ) |
4305 | | if( response_count > (size_t) SSIZE_MAX ) |
4306 | | { |
4307 | | libcerror_error_set( |
4308 | | error, |
4309 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
4310 | | LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS, |
4311 | | "%s: invalid response count value out of bounds.", |
4312 | | function ); |
4313 | | |
4314 | | return( -1 ); |
4315 | | } |
4316 | | #endif |
4317 | | return( (ssize_t) response_count ); |
4318 | | |
4319 | | #elif defined( HAVE_IOCTL ) |
4320 | 0 | if( control_data != NULL ) |
4321 | 0 | { |
4322 | 0 | libcerror_error_set( |
4323 | 0 | error, |
4324 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
4325 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
4326 | 0 | "%s: unsupported control data.", |
4327 | 0 | function ); |
4328 | |
|
4329 | 0 | return( -1 ); |
4330 | 0 | } |
4331 | 0 | if( ioctl( |
4332 | 0 | internal_file->descriptor, |
4333 | 0 | (int) control_code, |
4334 | 0 | data ) == -1 ) |
4335 | 0 | { |
4336 | 0 | *error_code = (uint32_t) errno; |
4337 | |
|
4338 | 0 | libcerror_system_set_error( |
4339 | 0 | error, |
4340 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
4341 | 0 | LIBCERROR_IO_ERROR_IOCTL_FAILED, |
4342 | 0 | *error_code, |
4343 | 0 | "%s: unable to IO control device.", |
4344 | 0 | function ); |
4345 | |
|
4346 | 0 | return( -1 ); |
4347 | 0 | } |
4348 | 0 | return( (size_t) data_size ); |
4349 | 0 | #endif |
4350 | 0 | } |
4351 | | |
4352 | | #else |
4353 | | #error Missing file IO control with data function |
4354 | | #endif |
4355 | | |
4356 | | /* Read data from a device file using IO control |
4357 | | * Returns the number of bytes read if successful or -1 on error |
4358 | | */ |
4359 | | ssize_t libcfile_file_io_control_read( |
4360 | | libcfile_file_t *file, |
4361 | | uint32_t control_code, |
4362 | | uint8_t *control_data, |
4363 | | size_t control_data_size, |
4364 | | uint8_t *data, |
4365 | | size_t data_size, |
4366 | | libcerror_error_t **error ) |
4367 | 0 | { |
4368 | 0 | libcfile_internal_file_t *internal_file = NULL; |
4369 | 0 | static char *function = "libcfile_file_io_control_read"; |
4370 | 0 | ssize_t read_count = 0; |
4371 | 0 | uint32_t error_code = 0; |
4372 | |
|
4373 | 0 | if( file == NULL ) |
4374 | 0 | { |
4375 | 0 | libcerror_error_set( |
4376 | 0 | error, |
4377 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
4378 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
4379 | 0 | "%s: invalid file.", |
4380 | 0 | function ); |
4381 | |
|
4382 | 0 | return( -1 ); |
4383 | 0 | } |
4384 | 0 | internal_file = (libcfile_internal_file_t *) file; |
4385 | |
|
4386 | 0 | read_count = libcfile_internal_file_io_control_read_with_error_code( |
4387 | 0 | internal_file, |
4388 | 0 | control_code, |
4389 | 0 | control_data, |
4390 | 0 | control_data_size, |
4391 | 0 | data, |
4392 | 0 | data_size, |
4393 | 0 | &error_code, |
4394 | 0 | error ); |
4395 | |
|
4396 | 0 | if( read_count == -1 ) |
4397 | 0 | { |
4398 | 0 | libcerror_error_set( |
4399 | 0 | error, |
4400 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
4401 | 0 | LIBCERROR_IO_ERROR_IOCTL_FAILED, |
4402 | 0 | "%s: unable to to IO control device.", |
4403 | 0 | function ); |
4404 | |
|
4405 | 0 | return( -1 ); |
4406 | 0 | } |
4407 | 0 | return( read_count ); |
4408 | 0 | } |
4409 | | |
4410 | | /* Read data from a device file using IO control |
4411 | | * Returns the number of bytes read if successful or -1 on error |
4412 | | */ |
4413 | | ssize_t libcfile_file_io_control_read_with_error_code( |
4414 | | libcfile_file_t *file, |
4415 | | uint32_t control_code, |
4416 | | uint8_t *control_data, |
4417 | | size_t control_data_size, |
4418 | | uint8_t *data, |
4419 | | size_t data_size, |
4420 | | uint32_t *error_code, |
4421 | | libcerror_error_t **error ) |
4422 | 0 | { |
4423 | 0 | libcfile_internal_file_t *internal_file = NULL; |
4424 | 0 | static char *function = "libcfile_file_io_control_read_with_error_code"; |
4425 | 0 | ssize_t read_count = 0; |
4426 | |
|
4427 | 0 | if( file == NULL ) |
4428 | 0 | { |
4429 | 0 | libcerror_error_set( |
4430 | 0 | error, |
4431 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
4432 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
4433 | 0 | "%s: invalid file.", |
4434 | 0 | function ); |
4435 | |
|
4436 | 0 | return( -1 ); |
4437 | 0 | } |
4438 | 0 | internal_file = (libcfile_internal_file_t *) file; |
4439 | |
|
4440 | 0 | read_count = libcfile_internal_file_io_control_read_with_error_code( |
4441 | 0 | internal_file, |
4442 | 0 | control_code, |
4443 | 0 | control_data, |
4444 | 0 | control_data_size, |
4445 | 0 | data, |
4446 | 0 | data_size, |
4447 | 0 | error_code, |
4448 | 0 | error ); |
4449 | |
|
4450 | 0 | if( read_count == -1 ) |
4451 | 0 | { |
4452 | 0 | libcerror_error_set( |
4453 | 0 | error, |
4454 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
4455 | 0 | LIBCERROR_IO_ERROR_IOCTL_FAILED, |
4456 | 0 | "%s: unable to to IO control device.", |
4457 | 0 | function ); |
4458 | |
|
4459 | 0 | return( -1 ); |
4460 | 0 | } |
4461 | 0 | return( read_count ); |
4462 | 0 | } |
4463 | | |
4464 | | /* On some versions of Linux the FADVISE definions seem to be missing from fcntl.h |
4465 | | */ |
4466 | | #if defined( HAVE_POSIX_FADVISE ) && !defined( WINAPI ) |
4467 | | |
4468 | | #if !defined( POSIX_FADV_NORMAL ) |
4469 | | #define POSIX_FADV_NORMAL 0 |
4470 | | #endif |
4471 | | |
4472 | | #if !defined( POSIX_FADV_RANDOM ) |
4473 | | #define POSIX_FADV_RANDOM 1 |
4474 | | #endif |
4475 | | |
4476 | | #if !defined( POSIX_FADV_SEQUENTIAL ) |
4477 | | #define POSIX_FADV_SEQUENTIAL 2 |
4478 | | #endif |
4479 | | |
4480 | | #endif /* #if defined( HAVE_POSIX_FADVISE ) && !defined( WINAPI ) */ |
4481 | | |
4482 | | /* Sets the expected access behavior so the system can optimize the access |
4483 | | * Returns 1 if successful or -1 on error |
4484 | | */ |
4485 | | int libcfile_file_set_access_behavior( |
4486 | | libcfile_file_t *file, |
4487 | | int access_behavior, |
4488 | | libcerror_error_t **error ) |
4489 | 0 | { |
4490 | 0 | libcfile_internal_file_t *internal_file = NULL; |
4491 | 0 | static char *function = "libcfile_file_set_access_behavior"; |
4492 | |
|
4493 | 0 | #if defined( HAVE_POSIX_FADVISE ) && !defined( WINAPI ) |
4494 | 0 | int advice = POSIX_FADV_NORMAL; |
4495 | 0 | int result = 0; |
4496 | 0 | #endif |
4497 | |
|
4498 | 0 | if( file == NULL ) |
4499 | 0 | { |
4500 | 0 | libcerror_error_set( |
4501 | 0 | error, |
4502 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
4503 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
4504 | 0 | "%s: invalid file.", |
4505 | 0 | function ); |
4506 | |
|
4507 | 0 | return( -1 ); |
4508 | 0 | } |
4509 | 0 | internal_file = (libcfile_internal_file_t *) file; |
4510 | |
|
4511 | | #if defined( WINAPI ) |
4512 | | if( internal_file->handle == INVALID_HANDLE_VALUE ) |
4513 | | { |
4514 | | libcerror_error_set( |
4515 | | error, |
4516 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
4517 | | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
4518 | | "%s: invalid file - missing handle.", |
4519 | | function ); |
4520 | | |
4521 | | return( -1 ); |
4522 | | } |
4523 | | #else |
4524 | 0 | if( internal_file->descriptor == -1 ) |
4525 | 0 | { |
4526 | 0 | libcerror_error_set( |
4527 | 0 | error, |
4528 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
4529 | 0 | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
4530 | 0 | "%s: invalid file - missing descriptor.", |
4531 | 0 | function ); |
4532 | |
|
4533 | 0 | return( -1 ); |
4534 | 0 | } |
4535 | 0 | #endif |
4536 | 0 | if( ( access_behavior != LIBCFILE_ACCESS_BEHAVIOR_NORMAL ) |
4537 | 0 | && ( access_behavior != LIBCFILE_ACCESS_BEHAVIOR_RANDOM ) |
4538 | 0 | && ( access_behavior != LIBCFILE_ACCESS_BEHAVIOR_SEQUENTIAL ) ) |
4539 | 0 | { |
4540 | 0 | libcerror_error_set( |
4541 | 0 | error, |
4542 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
4543 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
4544 | 0 | "%s: unsupported access behavior: %d.", |
4545 | 0 | function, |
4546 | 0 | access_behavior ); |
4547 | |
|
4548 | 0 | return( -1 ); |
4549 | 0 | } |
4550 | 0 | #if defined( HAVE_POSIX_FADVISE ) && !defined( WINAPI ) |
4551 | 0 | if( access_behavior == LIBCFILE_ACCESS_BEHAVIOR_NORMAL ) |
4552 | 0 | { |
4553 | 0 | advice = POSIX_FADV_NORMAL; |
4554 | 0 | } |
4555 | 0 | else if( access_behavior == LIBCFILE_ACCESS_BEHAVIOR_RANDOM ) |
4556 | 0 | { |
4557 | 0 | advice = POSIX_FADV_RANDOM; |
4558 | 0 | } |
4559 | 0 | else if( access_behavior == LIBCFILE_ACCESS_BEHAVIOR_SEQUENTIAL ) |
4560 | 0 | { |
4561 | 0 | advice = POSIX_FADV_SEQUENTIAL; |
4562 | 0 | } |
4563 | 0 | result = posix_fadvise( |
4564 | 0 | internal_file->descriptor, |
4565 | 0 | 0, |
4566 | 0 | 0, |
4567 | 0 | advice ); |
4568 | | |
4569 | | /* Safely ignore if the device does not support fadvise. |
4570 | | * Note that FreeBSD 10.0 had a bug and was returning -1 |
4571 | | * and setting errno. |
4572 | | */ |
4573 | 0 | if( ( result != 0 ) |
4574 | 0 | && ( result != ENODEV ) ) |
4575 | 0 | { |
4576 | 0 | libcerror_system_set_error( |
4577 | 0 | error, |
4578 | 0 | LIBCERROR_ERROR_DOMAIN_IO, |
4579 | 0 | LIBCERROR_IO_ERROR_GENERIC, |
4580 | 0 | errno, |
4581 | 0 | "%s: unable to advice file descriptor on access behavior.", |
4582 | 0 | function ); |
4583 | |
|
4584 | 0 | return( -1 ); |
4585 | 0 | } |
4586 | 0 | #endif /* defined( HAVE_POSIX_FADVISE ) && !defined( WINAPI ) */ |
4587 | | |
4588 | 0 | return( 1 ); |
4589 | 0 | } |
4590 | | |
4591 | | /* Sets the block size for the read and seek operations |
4592 | | * A block size of 0 represents no block-based operations |
4593 | | * The total size must be a multitude of block size |
4594 | | * Returns 1 if successful or -1 on error |
4595 | | */ |
4596 | | int libcfile_internal_file_set_block_size( |
4597 | | libcfile_internal_file_t *internal_file, |
4598 | | size_t block_size, |
4599 | | libcerror_error_t **error ) |
4600 | 0 | { |
4601 | 0 | static char *function = "libcfile_internal_file_set_block_size"; |
4602 | |
|
4603 | 0 | if( internal_file == NULL ) |
4604 | 0 | { |
4605 | 0 | libcerror_error_set( |
4606 | 0 | error, |
4607 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
4608 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
4609 | 0 | "%s: invalid file.", |
4610 | 0 | function ); |
4611 | |
|
4612 | 0 | return( -1 ); |
4613 | 0 | } |
4614 | | #if defined( WINAPI ) && ( UINT32_MAX < SSIZE_MAX ) |
4615 | | if( block_size > (size_t) UINT32_MAX ) |
4616 | | #else |
4617 | 0 | if( block_size > (size_t) SSIZE_MAX ) |
4618 | 0 | #endif |
4619 | 0 | { |
4620 | 0 | libcerror_error_set( |
4621 | 0 | error, |
4622 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
4623 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
4624 | 0 | "%s: invalid block size value exceeds maximum.", |
4625 | 0 | function ); |
4626 | |
|
4627 | 0 | return( -1 ); |
4628 | 0 | } |
4629 | 0 | if( internal_file->block_data != NULL ) |
4630 | 0 | { |
4631 | 0 | if( block_size != internal_file->block_size ) |
4632 | 0 | { |
4633 | 0 | memory_free( |
4634 | 0 | internal_file->block_data ); |
4635 | |
|
4636 | 0 | internal_file->block_data = NULL; |
4637 | 0 | internal_file->block_data_size = 0; |
4638 | 0 | } |
4639 | 0 | } |
4640 | 0 | if( internal_file->block_data == NULL ) |
4641 | 0 | { |
4642 | 0 | if( block_size > 0 ) |
4643 | 0 | { |
4644 | 0 | internal_file->block_data = (uint8_t *) memory_allocate( |
4645 | 0 | sizeof( uint8_t ) * block_size ); |
4646 | |
|
4647 | 0 | if( internal_file->block_data == NULL ) |
4648 | 0 | { |
4649 | 0 | libcerror_error_set( |
4650 | 0 | error, |
4651 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
4652 | 0 | LIBCERROR_MEMORY_ERROR_INSUFFICIENT, |
4653 | 0 | "%s: unable to create block data.", |
4654 | 0 | function ); |
4655 | |
|
4656 | 0 | return( -1 ); |
4657 | 0 | } |
4658 | 0 | if( memory_set( |
4659 | 0 | internal_file->block_data, |
4660 | 0 | 0, |
4661 | 0 | block_size ) == NULL ) |
4662 | 0 | { |
4663 | 0 | libcerror_error_set( |
4664 | 0 | error, |
4665 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
4666 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
4667 | 0 | "%s: unable to clear block data.", |
4668 | 0 | function ); |
4669 | |
|
4670 | 0 | return( -1 ); |
4671 | 0 | } |
4672 | 0 | } |
4673 | 0 | internal_file->block_size = block_size; |
4674 | 0 | } |
4675 | 0 | return( 1 ); |
4676 | 0 | } |
4677 | | |
4678 | | /* Sets the block size for the read and seek operations |
4679 | | * A block size of 0 represents no block-based operations |
4680 | | * The total size must be a multitude of block size |
4681 | | * Returns 1 if successful or -1 on error |
4682 | | */ |
4683 | | int libcfile_file_set_block_size( |
4684 | | libcfile_file_t *file, |
4685 | | size_t block_size, |
4686 | | libcerror_error_t **error ) |
4687 | 0 | { |
4688 | 0 | libcfile_internal_file_t *internal_file = NULL; |
4689 | 0 | static char *function = "libcfile_file_set_block_size"; |
4690 | |
|
4691 | 0 | if( file == NULL ) |
4692 | 0 | { |
4693 | 0 | libcerror_error_set( |
4694 | 0 | error, |
4695 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
4696 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
4697 | 0 | "%s: invalid file.", |
4698 | 0 | function ); |
4699 | |
|
4700 | 0 | return( -1 ); |
4701 | 0 | } |
4702 | 0 | internal_file = (libcfile_internal_file_t *) file; |
4703 | |
|
4704 | 0 | if( ( internal_file->access_flags & LIBCFILE_ACCESS_FLAG_WRITE ) != 0 ) |
4705 | 0 | { |
4706 | 0 | libcerror_error_set( |
4707 | 0 | error, |
4708 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
4709 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
4710 | 0 | "%s: setting block size not supported with write access.", |
4711 | 0 | function ); |
4712 | |
|
4713 | 0 | return( -1 ); |
4714 | 0 | } |
4715 | | #if defined( WINAPI ) |
4716 | | if( internal_file->handle == INVALID_HANDLE_VALUE ) |
4717 | | { |
4718 | | libcerror_error_set( |
4719 | | error, |
4720 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
4721 | | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
4722 | | "%s: invalid file - missing handle.", |
4723 | | function ); |
4724 | | |
4725 | | return( -1 ); |
4726 | | } |
4727 | | #else |
4728 | 0 | if( internal_file->descriptor == -1 ) |
4729 | 0 | { |
4730 | 0 | libcerror_error_set( |
4731 | 0 | error, |
4732 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
4733 | 0 | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
4734 | 0 | "%s: invalid file - missing descriptor.", |
4735 | 0 | function ); |
4736 | |
|
4737 | 0 | return( -1 ); |
4738 | 0 | } |
4739 | 0 | #endif |
4740 | | #if defined( WINAPI ) && ( UINT32_MAX < SSIZE_MAX ) |
4741 | | if( block_size > (size_t) UINT32_MAX ) |
4742 | | #else |
4743 | 0 | if( block_size > (size_t) SSIZE_MAX ) |
4744 | 0 | #endif |
4745 | 0 | { |
4746 | 0 | libcerror_error_set( |
4747 | 0 | error, |
4748 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
4749 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
4750 | 0 | "%s: invalid block size value exceeds maximum.", |
4751 | 0 | function ); |
4752 | |
|
4753 | 0 | return( -1 ); |
4754 | 0 | } |
4755 | 0 | if( ( block_size != 0 ) |
4756 | 0 | && ( ( internal_file->size % block_size ) != 0 ) ) |
4757 | 0 | { |
4758 | 0 | libcerror_error_set( |
4759 | 0 | error, |
4760 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
4761 | 0 | LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS, |
4762 | 0 | "%s: invalid block size value out of bounds.", |
4763 | 0 | function ); |
4764 | |
|
4765 | 0 | return( -1 ); |
4766 | 0 | } |
4767 | 0 | if( libcfile_internal_file_set_block_size( |
4768 | 0 | internal_file, |
4769 | 0 | block_size, |
4770 | 0 | error ) != 1 ) |
4771 | 0 | { |
4772 | 0 | libcerror_error_set( |
4773 | 0 | error, |
4774 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
4775 | 0 | LIBCERROR_RUNTIME_ERROR_SET_FAILED, |
4776 | 0 | "%s: unable to set block size.", |
4777 | 0 | function ); |
4778 | |
|
4779 | 0 | return( -1 ); |
4780 | 0 | } |
4781 | 0 | return( 1 ); |
4782 | 0 | } |
4783 | | |