Commit | Line | Data |
---|---|---|
93509525 | 1 | /* Low-level I/O routines for BFDs. |
7c192733 AC |
2 | |
3 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, | |
b5dee4ea | 4 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2011 |
9553c638 | 5 | Free Software Foundation, Inc. |
7c192733 | 6 | |
93509525 KD |
7 | Written by Cygnus Support. |
8 | ||
cd123cb7 | 9 | This file is part of BFD, the Binary File Descriptor library. |
93509525 | 10 | |
cd123cb7 NC |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 3 of the License, or | |
14 | (at your option) any later version. | |
93509525 | 15 | |
cd123cb7 NC |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
93509525 | 20 | |
cd123cb7 NC |
21 | You should have received a copy of the GNU General Public License |
22 | along with this program; if not, write to the Free Software | |
23 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
24 | MA 02110-1301, USA. */ | |
93509525 KD |
25 | |
26 | #include "sysdep.h" | |
3db64b00 | 27 | #include <limits.h> |
93509525 KD |
28 | #include "bfd.h" |
29 | #include "libbfd.h" | |
30 | ||
93509525 KD |
31 | #ifndef S_IXUSR |
32 | #define S_IXUSR 0100 /* Execute by owner. */ | |
33 | #endif | |
34 | #ifndef S_IXGRP | |
35 | #define S_IXGRP 0010 /* Execute by group. */ | |
36 | #endif | |
37 | #ifndef S_IXOTH | |
38 | #define S_IXOTH 0001 /* Execute by others. */ | |
39 | #endif | |
40 | ||
428b207a TT |
41 | #ifndef FD_CLOEXEC |
42 | #define FD_CLOEXEC 1 | |
43 | #endif | |
44 | ||
7c192733 AC |
45 | file_ptr |
46 | real_ftell (FILE *file) | |
47 | { | |
48 | #if defined (HAVE_FTELLO64) | |
49 | return ftello64 (file); | |
50 | #elif defined (HAVE_FTELLO) | |
51 | return ftello (file); | |
52 | #else | |
53 | return ftell (file); | |
54 | #endif | |
55 | } | |
56 | ||
57 | int | |
58 | real_fseek (FILE *file, file_ptr offset, int whence) | |
59 | { | |
60 | #if defined (HAVE_FSEEKO64) | |
61 | return fseeko64 (file, offset, whence); | |
62 | #elif defined (HAVE_FSEEKO) | |
63 | return fseeko (file, offset, whence); | |
64 | #else | |
65 | return fseek (file, offset, whence); | |
66 | #endif | |
67 | } | |
68 | ||
428b207a TT |
69 | /* Mark FILE as close-on-exec. Return FILE. FILE may be NULL, in |
70 | which case nothing is done. */ | |
71 | static FILE * | |
72 | close_on_exec (FILE *file) | |
73 | { | |
74 | #if defined (HAVE_FILENO) && defined (F_GETFD) | |
75 | if (file) | |
76 | { | |
77 | int fd = fileno (file); | |
78 | int old = fcntl (fd, F_GETFD, 0); | |
79 | if (old >= 0) | |
80 | fcntl (fd, F_SETFD, old | FD_CLOEXEC); | |
81 | } | |
82 | #endif | |
83 | return file; | |
84 | } | |
85 | ||
2e6f4fae DJ |
86 | FILE * |
87 | real_fopen (const char *filename, const char *modes) | |
88 | { | |
d387240a TG |
89 | #ifdef VMS |
90 | char vms_modes[4]; | |
91 | char *vms_attr; | |
92 | ||
93 | /* On VMS, fopen allows file attributes as optionnal arguments. | |
94 | We need to use them but we'd better to use the common prototype. | |
95 | In fopen-vms.h, they are separated from the mode with a comma. | |
96 | Split here. */ | |
97 | vms_attr = strchr (modes, ','); | |
98 | if (vms_attr == NULL) | |
99 | { | |
100 | /* No attributes. */ | |
101 | return close_on_exec (fopen (filename, modes)); | |
102 | } | |
103 | else | |
104 | { | |
0c376465 TG |
105 | /* Attributes found. Split. */ |
106 | size_t modes_len = strlen (modes) + 1; | |
107 | char attrs[modes_len + 1]; | |
108 | char *at[3]; | |
109 | int i; | |
110 | ||
111 | memcpy (attrs, modes, modes_len); | |
112 | at[0] = attrs; | |
113 | for (i = 0; i < 2; i++) | |
114 | { | |
115 | at[i + 1] = strchr (at[i], ','); | |
116 | BFD_ASSERT (at[i + 1] != NULL); | |
117 | *(at[i + 1]++) = 0; /* Replace ',' with a nul, and skip it. */ | |
118 | } | |
119 | return close_on_exec (fopen (filename, at[0], at[1], at[2])); | |
d387240a TG |
120 | } |
121 | #else /* !VMS */ | |
2e6f4fae | 122 | #if defined (HAVE_FOPEN64) |
428b207a | 123 | return close_on_exec (fopen64 (filename, modes)); |
2e6f4fae | 124 | #else |
428b207a | 125 | return close_on_exec (fopen (filename, modes)); |
2e6f4fae | 126 | #endif |
d387240a | 127 | #endif /* !VMS */ |
2e6f4fae DJ |
128 | } |
129 | ||
40838a72 AC |
130 | /* |
131 | INTERNAL_DEFINITION | |
132 | struct bfd_iovec | |
93509525 | 133 | |
40838a72 | 134 | DESCRIPTION |
93509525 | 135 | |
40838a72 AC |
136 | The <<struct bfd_iovec>> contains the internal file I/O class. |
137 | Each <<BFD>> has an instance of this class and all file I/O is | |
138 | routed through it (it is assumed that the instance implements | |
139 | all methods listed below). | |
140 | ||
141 | .struct bfd_iovec | |
142 | .{ | |
143 | . {* To avoid problems with macros, a "b" rather than "f" | |
144 | . prefix is prepended to each method name. *} | |
145 | . {* Attempt to read/write NBYTES on ABFD's IOSTREAM storing/fetching | |
146 | . bytes starting at PTR. Return the number of bytes actually | |
147 | . transfered (a read past end-of-file returns less than NBYTES), | |
148 | . or -1 (setting <<bfd_error>>) if an error occurs. *} | |
149 | . file_ptr (*bread) (struct bfd *abfd, void *ptr, file_ptr nbytes); | |
150 | . file_ptr (*bwrite) (struct bfd *abfd, const void *ptr, | |
151 | . file_ptr nbytes); | |
152 | . {* Return the current IOSTREAM file offset, or -1 (setting <<bfd_error>> | |
153 | . if an error occurs. *} | |
154 | . file_ptr (*btell) (struct bfd *abfd); | |
155 | . {* For the following, on successful completion a value of 0 is returned. | |
156 | . Otherwise, a value of -1 is returned (and <<bfd_error>> is set). *} | |
157 | . int (*bseek) (struct bfd *abfd, file_ptr offset, int whence); | |
158 | . int (*bclose) (struct bfd *abfd); | |
159 | . int (*bflush) (struct bfd *abfd); | |
160 | . int (*bstat) (struct bfd *abfd, struct stat *sb); | |
4c95ab76 TG |
161 | . {* Mmap a part of the files. ADDR, LEN, PROT, FLAGS and OFFSET are the usual |
162 | . mmap parameter, except that LEN and OFFSET do not need to be page | |
163 | . aligned. Returns (void *)-1 on failure, mmapped address on success. | |
164 | . Also write in MAP_ADDR the address of the page aligned buffer and in | |
165 | . MAP_LEN the size mapped (a page multiple). Use unmap with MAP_ADDR and | |
166 | . MAP_LEN to unmap. *} | |
f07749bb | 167 | . void *(*bmmap) (struct bfd *abfd, void *addr, bfd_size_type len, |
4c95ab76 TG |
168 | . int prot, int flags, file_ptr offset, |
169 | . void **map_addr, bfd_size_type *map_len); | |
40838a72 | 170 | .}; |
93509525 | 171 | |
65077aa8 TG |
172 | .extern const struct bfd_iovec _bfd_memory_iovec; |
173 | ||
40838a72 | 174 | */ |
93509525 | 175 | |
93509525 KD |
176 | |
177 | /* Return value is amount read. */ | |
178 | ||
179 | bfd_size_type | |
c58b9523 | 180 | bfd_bread (void *ptr, bfd_size_type size, bfd *abfd) |
93509525 KD |
181 | { |
182 | size_t nread; | |
183 | ||
1fb41da4 AM |
184 | /* If this is an archive element, don't read past the end of |
185 | this element. */ | |
186 | if (abfd->arelt_data != NULL) | |
187 | { | |
f1bb16f8 NC |
188 | bfd_size_type maxbytes = arelt_size (abfd); |
189 | ||
f0b3dbfc TG |
190 | if (abfd->where + size > maxbytes) |
191 | { | |
192 | if (abfd->where >= maxbytes) | |
193 | return 0; | |
194 | size = maxbytes - abfd->where; | |
195 | } | |
1fb41da4 AM |
196 | } |
197 | ||
69fd4758 NC |
198 | if (abfd->iovec) |
199 | nread = abfd->iovec->bread (abfd, ptr, size); | |
200 | else | |
201 | nread = 0; | |
93509525 KD |
202 | if (nread != (size_t) -1) |
203 | abfd->where += nread; | |
204 | ||
93509525 KD |
205 | return nread; |
206 | } | |
207 | ||
208 | bfd_size_type | |
c58b9523 | 209 | bfd_bwrite (const void *ptr, bfd_size_type size, bfd *abfd) |
93509525 KD |
210 | { |
211 | size_t nwrote; | |
212 | ||
69fd4758 NC |
213 | if (abfd->iovec) |
214 | nwrote = abfd->iovec->bwrite (abfd, ptr, size); | |
215 | else | |
216 | nwrote = 0; | |
217 | ||
93509525 KD |
218 | if (nwrote != (size_t) -1) |
219 | abfd->where += nwrote; | |
220 | if (nwrote != size) | |
221 | { | |
222 | #ifdef ENOSPC | |
223 | errno = ENOSPC; | |
224 | #endif | |
225 | bfd_set_error (bfd_error_system_call); | |
226 | } | |
227 | return nwrote; | |
228 | } | |
229 | ||
7c192733 | 230 | file_ptr |
c58b9523 | 231 | bfd_tell (bfd *abfd) |
93509525 KD |
232 | { |
233 | file_ptr ptr; | |
234 | ||
69fd4758 NC |
235 | if (abfd->iovec) |
236 | { | |
660722b0 | 237 | bfd *parent_bfd = abfd; |
69fd4758 NC |
238 | ptr = abfd->iovec->btell (abfd); |
239 | ||
660722b0 TG |
240 | while (parent_bfd->my_archive != NULL) |
241 | { | |
242 | ptr -= parent_bfd->origin; | |
243 | parent_bfd = parent_bfd->my_archive; | |
244 | } | |
69fd4758 NC |
245 | } |
246 | else | |
247 | ptr = 0; | |
93509525 | 248 | |
93509525 KD |
249 | abfd->where = ptr; |
250 | return ptr; | |
251 | } | |
252 | ||
253 | int | |
c58b9523 | 254 | bfd_flush (bfd *abfd) |
93509525 | 255 | { |
69fd4758 NC |
256 | if (abfd->iovec) |
257 | return abfd->iovec->bflush (abfd); | |
258 | return 0; | |
93509525 KD |
259 | } |
260 | ||
261 | /* Returns 0 for success, negative value for failure (in which case | |
262 | bfd_get_error can retrieve the error code). */ | |
263 | int | |
c58b9523 | 264 | bfd_stat (bfd *abfd, struct stat *statbuf) |
93509525 | 265 | { |
93509525 KD |
266 | int result; |
267 | ||
69fd4758 NC |
268 | if (abfd->iovec) |
269 | result = abfd->iovec->bstat (abfd, statbuf); | |
270 | else | |
271 | result = -1; | |
272 | ||
93509525 KD |
273 | if (result < 0) |
274 | bfd_set_error (bfd_error_system_call); | |
275 | return result; | |
276 | } | |
277 | ||
278 | /* Returns 0 for success, nonzero for failure (in which case bfd_get_error | |
279 | can retrieve the error code). */ | |
280 | ||
281 | int | |
c58b9523 | 282 | bfd_seek (bfd *abfd, file_ptr position, int direction) |
93509525 KD |
283 | { |
284 | int result; | |
7c192733 | 285 | file_ptr file_position; |
93509525 KD |
286 | /* For the time being, a BFD may not seek to it's end. The problem |
287 | is that we don't easily have a way to recognize the end of an | |
288 | element in an archive. */ | |
289 | ||
290 | BFD_ASSERT (direction == SEEK_SET || direction == SEEK_CUR); | |
291 | ||
292 | if (direction == SEEK_CUR && position == 0) | |
293 | return 0; | |
294 | ||
93509525 KD |
295 | if (abfd->format != bfd_archive && abfd->my_archive == 0) |
296 | { | |
93509525 KD |
297 | if (direction == SEEK_SET && (bfd_vma) position == abfd->where) |
298 | return 0; | |
299 | } | |
300 | else | |
301 | { | |
302 | /* We need something smarter to optimize access to archives. | |
303 | Currently, anything inside an archive is read via the file | |
304 | handle for the archive. Which means that a bfd_seek on one | |
305 | component affects the `current position' in the archive, as | |
306 | well as in any other component. | |
307 | ||
308 | It might be sufficient to put a spike through the cache | |
309 | abstraction, and look to the archive for the file position, | |
310 | but I think we should try for something cleaner. | |
311 | ||
312 | In the meantime, no optimization for archives. */ | |
313 | } | |
314 | ||
93509525 | 315 | file_position = position; |
660722b0 TG |
316 | if (direction == SEEK_SET) |
317 | { | |
318 | bfd *parent_bfd = abfd; | |
319 | ||
320 | while (parent_bfd->my_archive != NULL) | |
321 | { | |
322 | file_position += parent_bfd->origin; | |
323 | parent_bfd = parent_bfd->my_archive; | |
324 | } | |
325 | } | |
93509525 | 326 | |
69fd4758 NC |
327 | if (abfd->iovec) |
328 | result = abfd->iovec->bseek (abfd, file_position, direction); | |
329 | else | |
330 | result = -1; | |
331 | ||
93509525 KD |
332 | if (result != 0) |
333 | { | |
334 | int hold_errno = errno; | |
335 | ||
336 | /* Force redetermination of `where' field. */ | |
337 | bfd_tell (abfd); | |
338 | ||
339 | /* An EINVAL error probably means that the file offset was | |
340 | absurd. */ | |
341 | if (hold_errno == EINVAL) | |
342 | bfd_set_error (bfd_error_file_truncated); | |
343 | else | |
344 | { | |
345 | bfd_set_error (bfd_error_system_call); | |
346 | errno = hold_errno; | |
347 | } | |
348 | } | |
349 | else | |
350 | { | |
351 | /* Adjust `where' field. */ | |
352 | if (direction == SEEK_SET) | |
353 | abfd->where = position; | |
354 | else | |
355 | abfd->where += position; | |
356 | } | |
357 | return result; | |
358 | } | |
359 | ||
360 | /* | |
361 | FUNCTION | |
362 | bfd_get_mtime | |
363 | ||
364 | SYNOPSIS | |
c58b9523 | 365 | long bfd_get_mtime (bfd *abfd); |
93509525 KD |
366 | |
367 | DESCRIPTION | |
368 | Return the file modification time (as read from the file system, or | |
369 | from the archive header for archive members). | |
370 | ||
371 | */ | |
372 | ||
373 | long | |
c58b9523 | 374 | bfd_get_mtime (bfd *abfd) |
93509525 | 375 | { |
93509525 KD |
376 | struct stat buf; |
377 | ||
378 | if (abfd->mtime_set) | |
379 | return abfd->mtime; | |
380 | ||
69fd4758 NC |
381 | if (abfd->iovec == NULL) |
382 | return 0; | |
383 | ||
40838a72 | 384 | if (abfd->iovec->bstat (abfd, &buf) != 0) |
93509525 KD |
385 | return 0; |
386 | ||
387 | abfd->mtime = buf.st_mtime; /* Save value in case anyone wants it */ | |
388 | return buf.st_mtime; | |
389 | } | |
390 | ||
391 | /* | |
392 | FUNCTION | |
393 | bfd_get_size | |
394 | ||
395 | SYNOPSIS | |
74633dd0 | 396 | file_ptr bfd_get_size (bfd *abfd); |
93509525 KD |
397 | |
398 | DESCRIPTION | |
399 | Return the file size (as read from file system) for the file | |
400 | associated with BFD @var{abfd}. | |
401 | ||
402 | The initial motivation for, and use of, this routine is not | |
403 | so we can get the exact size of the object the BFD applies to, since | |
404 | that might not be generally possible (archive members for example). | |
405 | It would be ideal if someone could eventually modify | |
406 | it so that such results were guaranteed. | |
407 | ||
408 | Instead, we want to ask questions like "is this NNN byte sized | |
409 | object I'm about to try read from file offset YYY reasonable?" | |
410 | As as example of where we might do this, some object formats | |
411 | use string tables for which the first <<sizeof (long)>> bytes of the | |
412 | table contain the size of the table itself, including the size bytes. | |
413 | If an application tries to read what it thinks is one of these | |
414 | string tables, without some way to validate the size, and for | |
415 | some reason the size is wrong (byte swapping error, wrong location | |
416 | for the string table, etc.), the only clue is likely to be a read | |
417 | error when it tries to read the table, or a "virtual memory | |
418 | exhausted" error when it tries to allocate 15 bazillon bytes | |
419 | of space for the 15 bazillon byte table it is about to read. | |
5c4491d3 | 420 | This function at least allows us to answer the question, "is the |
93509525 KD |
421 | size reasonable?". |
422 | */ | |
423 | ||
74633dd0 | 424 | file_ptr |
c58b9523 | 425 | bfd_get_size (bfd *abfd) |
93509525 | 426 | { |
93509525 KD |
427 | struct stat buf; |
428 | ||
69fd4758 NC |
429 | if (abfd->iovec == NULL) |
430 | return 0; | |
431 | ||
40838a72 | 432 | if (abfd->iovec->bstat (abfd, &buf) != 0) |
93509525 KD |
433 | return 0; |
434 | ||
435 | return buf.st_size; | |
436 | } | |
25b88f33 PP |
437 | |
438 | ||
439 | /* | |
440 | FUNCTION | |
441 | bfd_mmap | |
442 | ||
443 | SYNOPSIS | |
444 | void *bfd_mmap (bfd *abfd, void *addr, bfd_size_type len, | |
4c95ab76 TG |
445 | int prot, int flags, file_ptr offset, |
446 | void **map_addr, bfd_size_type *map_len); | |
25b88f33 PP |
447 | |
448 | DESCRIPTION | |
449 | Return mmap()ed region of the file, if possible and implemented. | |
4c95ab76 TG |
450 | LEN and OFFSET do not need to be page aligned. The page aligned |
451 | address and length are written to MAP_ADDR and MAP_LEN. | |
25b88f33 PP |
452 | |
453 | */ | |
454 | ||
455 | void * | |
456 | bfd_mmap (bfd *abfd, void *addr, bfd_size_type len, | |
4c95ab76 TG |
457 | int prot, int flags, file_ptr offset, |
458 | void **map_addr, bfd_size_type *map_len) | |
25b88f33 PP |
459 | { |
460 | void *ret = (void *)-1; | |
25b88f33 PP |
461 | |
462 | if (abfd->iovec == NULL) | |
463 | return ret; | |
464 | ||
4c95ab76 TG |
465 | return abfd->iovec->bmmap (abfd, addr, len, prot, flags, offset, |
466 | map_addr, map_len); | |
25b88f33 | 467 | } |
65077aa8 TG |
468 | |
469 | /* Memory file I/O operations. */ | |
470 | ||
471 | static file_ptr | |
472 | memory_bread (bfd *abfd, void *ptr, file_ptr size) | |
473 | { | |
474 | struct bfd_in_memory *bim; | |
475 | bfd_size_type get; | |
476 | ||
477 | bim = (struct bfd_in_memory *) abfd->iostream; | |
478 | get = size; | |
479 | if (abfd->where + get > bim->size) | |
480 | { | |
481 | if (bim->size < (bfd_size_type) abfd->where) | |
482 | get = 0; | |
483 | else | |
484 | get = bim->size - abfd->where; | |
485 | bfd_set_error (bfd_error_file_truncated); | |
486 | } | |
487 | memcpy (ptr, bim->buffer + abfd->where, (size_t) get); | |
488 | return get; | |
489 | } | |
490 | ||
491 | static file_ptr | |
492 | memory_bwrite (bfd *abfd, const void *ptr, file_ptr size) | |
493 | { | |
494 | struct bfd_in_memory *bim = (struct bfd_in_memory *) abfd->iostream; | |
495 | ||
496 | if (abfd->where + size > bim->size) | |
497 | { | |
498 | bfd_size_type newsize, oldsize; | |
499 | ||
500 | oldsize = (bim->size + 127) & ~(bfd_size_type) 127; | |
501 | bim->size = abfd->where + size; | |
502 | /* Round up to cut down on memory fragmentation */ | |
503 | newsize = (bim->size + 127) & ~(bfd_size_type) 127; | |
504 | if (newsize > oldsize) | |
505 | { | |
506 | bim->buffer = (bfd_byte *) bfd_realloc_or_free (bim->buffer, newsize); | |
507 | if (bim->buffer == NULL) | |
508 | { | |
509 | bim->size = 0; | |
510 | return 0; | |
511 | } | |
512 | if (newsize > bim->size) | |
513 | memset (bim->buffer + bim->size, 0, newsize - bim->size); | |
514 | } | |
515 | } | |
516 | memcpy (bim->buffer + abfd->where, ptr, (size_t) size); | |
517 | return size; | |
518 | } | |
519 | ||
520 | static file_ptr | |
521 | memory_btell (bfd *abfd) | |
522 | { | |
523 | return abfd->where; | |
524 | } | |
525 | ||
526 | static int | |
527 | memory_bseek (bfd *abfd, file_ptr position, int direction) | |
528 | { | |
529 | file_ptr nwhere; | |
530 | struct bfd_in_memory *bim; | |
531 | ||
532 | bim = (struct bfd_in_memory *) abfd->iostream; | |
533 | ||
534 | if (direction == SEEK_SET) | |
535 | nwhere = position; | |
536 | else | |
537 | nwhere = abfd->where + position; | |
538 | ||
539 | if (nwhere < 0) | |
540 | { | |
541 | abfd->where = 0; | |
542 | errno = EINVAL; | |
543 | return -1; | |
544 | } | |
545 | ||
546 | if ((bfd_size_type)nwhere > bim->size) | |
547 | { | |
548 | if (abfd->direction == write_direction | |
549 | || abfd->direction == both_direction) | |
550 | { | |
551 | bfd_size_type newsize, oldsize; | |
552 | ||
553 | oldsize = (bim->size + 127) & ~(bfd_size_type) 127; | |
554 | bim->size = nwhere; | |
555 | /* Round up to cut down on memory fragmentation */ | |
556 | newsize = (bim->size + 127) & ~(bfd_size_type) 127; | |
557 | if (newsize > oldsize) | |
558 | { | |
559 | bim->buffer = (bfd_byte *) bfd_realloc_or_free (bim->buffer, newsize); | |
560 | if (bim->buffer == NULL) | |
561 | { | |
562 | errno = EINVAL; | |
563 | bim->size = 0; | |
564 | return -1; | |
565 | } | |
566 | memset (bim->buffer + oldsize, 0, newsize - oldsize); | |
567 | } | |
568 | } | |
569 | else | |
570 | { | |
571 | abfd->where = bim->size; | |
572 | errno = EINVAL; | |
573 | bfd_set_error (bfd_error_file_truncated); | |
574 | return -1; | |
575 | } | |
576 | } | |
577 | return 0; | |
578 | } | |
579 | ||
580 | static int | |
581 | memory_bclose (struct bfd *abfd) | |
582 | { | |
583 | struct bfd_in_memory *bim = (struct bfd_in_memory *) abfd->iostream; | |
584 | ||
585 | if (bim->buffer != NULL) | |
586 | free (bim->buffer); | |
587 | free (bim); | |
588 | abfd->iostream = NULL; | |
589 | ||
590 | return TRUE; | |
591 | } | |
592 | ||
593 | static int | |
594 | memory_bflush (bfd *abfd ATTRIBUTE_UNUSED) | |
595 | { | |
596 | return 0; | |
597 | } | |
598 | ||
599 | static int | |
600 | memory_bstat (bfd *abfd, struct stat *statbuf) | |
601 | { | |
602 | struct bfd_in_memory *bim = (struct bfd_in_memory *) abfd->iostream; | |
603 | ||
b5dee4ea | 604 | memset (statbuf, 0, sizeof (*statbuf)); |
65077aa8 TG |
605 | statbuf->st_size = bim->size; |
606 | ||
607 | return 0; | |
608 | } | |
609 | ||
610 | static void * | |
611 | memory_bmmap (bfd *abfd ATTRIBUTE_UNUSED, void *addr ATTRIBUTE_UNUSED, | |
612 | bfd_size_type len ATTRIBUTE_UNUSED, int prot ATTRIBUTE_UNUSED, | |
4c95ab76 TG |
613 | int flags ATTRIBUTE_UNUSED, file_ptr offset ATTRIBUTE_UNUSED, |
614 | void **map_addr ATTRIBUTE_UNUSED, | |
615 | bfd_size_type *map_len ATTRIBUTE_UNUSED) | |
65077aa8 TG |
616 | { |
617 | return (void *)-1; | |
618 | } | |
619 | ||
620 | const struct bfd_iovec _bfd_memory_iovec = | |
621 | { | |
622 | &memory_bread, &memory_bwrite, &memory_btell, &memory_bseek, | |
623 | &memory_bclose, &memory_bflush, &memory_bstat, &memory_bmmap | |
624 | }; |