Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* opncls.c -- open and close a BFD. |
7898deda | 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, |
f075ee0c | 3 | 2001, 2002, 2003, 2004, 2005 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | ||
6 | Written by Cygnus Support. | |
7 | ||
c4f3d130 | 8 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 9 | |
c4f3d130 NC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
252b5132 | 14 | |
c4f3d130 NC |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
252b5132 | 19 | |
c4f3d130 NC |
20 | You should have received a copy of the GNU General Public License |
21 | along with this program; if not, write to the Free Software | |
3e110533 | 22 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
252b5132 RH |
23 | |
24 | #include "bfd.h" | |
25 | #include "sysdep.h" | |
26 | #include "objalloc.h" | |
27 | #include "libbfd.h" | |
31f7ba04 | 28 | #include "libiberty.h" |
252b5132 RH |
29 | |
30 | #ifndef S_IXUSR | |
31 | #define S_IXUSR 0100 /* Execute by owner. */ | |
32 | #endif | |
33 | #ifndef S_IXGRP | |
34 | #define S_IXGRP 0010 /* Execute by group. */ | |
35 | #endif | |
36 | #ifndef S_IXOTH | |
37 | #define S_IXOTH 0001 /* Execute by others. */ | |
38 | #endif | |
39 | ||
52b69c9e AO |
40 | /* Counter used to initialize the bfd identifier. */ |
41 | ||
42 | static unsigned int _bfd_id_counter = 0; | |
43 | ||
252b5132 RH |
44 | /* fdopen is a loser -- we should use stdio exclusively. Unfortunately |
45 | if we do that we can't use fcntl. */ | |
46 | ||
252b5132 RH |
47 | /* Return a new BFD. All BFD's are allocated through this routine. */ |
48 | ||
49 | bfd * | |
c58b9523 | 50 | _bfd_new_bfd (void) |
252b5132 RH |
51 | { |
52 | bfd *nbfd; | |
53 | ||
c58b9523 | 54 | nbfd = bfd_zmalloc (sizeof (bfd)); |
252b5132 RH |
55 | if (nbfd == NULL) |
56 | return NULL; | |
57 | ||
52b69c9e AO |
58 | nbfd->id = _bfd_id_counter++; |
59 | ||
c58b9523 | 60 | nbfd->memory = objalloc_create (); |
252b5132 RH |
61 | if (nbfd->memory == NULL) |
62 | { | |
63 | bfd_set_error (bfd_error_no_memory); | |
73e87d70 | 64 | free (nbfd); |
252b5132 RH |
65 | return NULL; |
66 | } | |
67 | ||
68 | nbfd->arch_info = &bfd_default_arch_struct; | |
69 | ||
70 | nbfd->direction = no_direction; | |
71 | nbfd->iostream = NULL; | |
72 | nbfd->where = 0; | |
28d39d1a | 73 | if (!bfd_hash_table_init_n (& nbfd->section_htab, bfd_section_hash_newfunc, |
7c4a37eb | 74 | 251)) |
73e87d70 AM |
75 | { |
76 | free (nbfd); | |
77 | return NULL; | |
78 | } | |
c58b9523 | 79 | nbfd->sections = NULL; |
5daa8fe7 | 80 | nbfd->section_last = NULL; |
252b5132 | 81 | nbfd->format = bfd_unknown; |
c58b9523 | 82 | nbfd->my_archive = NULL; |
dc810e39 | 83 | nbfd->origin = 0; |
b34976b6 AM |
84 | nbfd->opened_once = FALSE; |
85 | nbfd->output_has_begun = FALSE; | |
252b5132 | 86 | nbfd->section_count = 0; |
c58b9523 | 87 | nbfd->usrdata = NULL; |
b34976b6 | 88 | nbfd->cacheable = FALSE; |
252b5132 | 89 | nbfd->flags = BFD_NO_FLAGS; |
b34976b6 | 90 | nbfd->mtime_set = FALSE; |
252b5132 RH |
91 | |
92 | return nbfd; | |
93 | } | |
94 | ||
95 | /* Allocate a new BFD as a member of archive OBFD. */ | |
96 | ||
97 | bfd * | |
c58b9523 | 98 | _bfd_new_bfd_contained_in (bfd *obfd) |
252b5132 RH |
99 | { |
100 | bfd *nbfd; | |
101 | ||
102 | nbfd = _bfd_new_bfd (); | |
301e3139 AM |
103 | if (nbfd == NULL) |
104 | return NULL; | |
252b5132 | 105 | nbfd->xvec = obfd->xvec; |
40838a72 | 106 | nbfd->iovec = obfd->iovec; |
252b5132 RH |
107 | nbfd->my_archive = obfd; |
108 | nbfd->direction = read_direction; | |
109 | nbfd->target_defaulted = obfd->target_defaulted; | |
110 | return nbfd; | |
111 | } | |
112 | ||
73e87d70 AM |
113 | /* Delete a BFD. */ |
114 | ||
115 | void | |
c58b9523 | 116 | _bfd_delete_bfd (bfd *abfd) |
73e87d70 AM |
117 | { |
118 | bfd_hash_table_free (&abfd->section_htab); | |
119 | objalloc_free ((struct objalloc *) abfd->memory); | |
120 | free (abfd); | |
121 | } | |
122 | ||
252b5132 RH |
123 | /* |
124 | SECTION | |
125 | Opening and closing BFDs | |
126 | ||
127 | */ | |
128 | ||
129 | /* | |
130 | FUNCTION | |
2d0123b7 | 131 | bfd_fopen |
252b5132 RH |
132 | |
133 | SYNOPSIS | |
2d0123b7 MM |
134 | bfd *bfd_fopen (const char *filename, const char *target, |
135 | const char *mode, int fd); | |
252b5132 RH |
136 | |
137 | DESCRIPTION | |
2d0123b7 MM |
138 | Open the file @var{filename} with the target @var{target}. |
139 | Return a pointer to the created BFD. If @var{fd} is not -1, | |
140 | then <<fdopen>> is used to open the file; otherwise, <<fopen>> | |
141 | is used. @var{mode} is passed directly to <<fopen>> or | |
142 | <<fdopen>>. | |
252b5132 RH |
143 | |
144 | Calls <<bfd_find_target>>, so @var{target} is interpreted as by | |
145 | that function. | |
146 | ||
147 | If <<NULL>> is returned then an error has occured. Possible errors | |
7c4a37eb AM |
148 | are <<bfd_error_no_memory>>, <<bfd_error_invalid_target>> or |
149 | <<system_call>> error. | |
252b5132 RH |
150 | */ |
151 | ||
152 | bfd * | |
2d0123b7 | 153 | bfd_fopen (const char *filename, const char *target, const char *mode, int fd) |
252b5132 RH |
154 | { |
155 | bfd *nbfd; | |
156 | const bfd_target *target_vec; | |
157 | ||
2d0123b7 MM |
158 | bfd_set_error (bfd_error_system_call); |
159 | ||
252b5132 RH |
160 | nbfd = _bfd_new_bfd (); |
161 | if (nbfd == NULL) | |
162 | return NULL; | |
163 | ||
164 | target_vec = bfd_find_target (target, nbfd); | |
165 | if (target_vec == NULL) | |
166 | { | |
73e87d70 | 167 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
168 | return NULL; |
169 | } | |
2d0123b7 MM |
170 | |
171 | #ifdef HAVE_FDOPEN | |
172 | if (fd != -1) | |
173 | nbfd->iostream = fdopen (fd, mode); | |
174 | else | |
175 | #endif | |
176 | nbfd->iostream = fopen (filename, mode); | |
177 | if (nbfd->iostream == NULL) | |
178 | { | |
179 | _bfd_delete_bfd (nbfd); | |
180 | return NULL; | |
181 | } | |
252b5132 | 182 | |
2d0123b7 | 183 | /* OK, put everything where it belongs. */ |
252b5132 | 184 | nbfd->filename = filename; |
252b5132 | 185 | |
2d0123b7 MM |
186 | /* Figure out whether the user is opening the file for reading, |
187 | writing, or both, by looking at the MODE argument. */ | |
188 | if ((mode[0] == 'r' || mode[0] == 'w' || mode[0] == 'a') | |
189 | && mode[1] == '+') | |
190 | nbfd->direction = both_direction; | |
191 | else if (mode[0] == 'r') | |
192 | nbfd->direction = read_direction; | |
193 | else | |
194 | nbfd->direction = write_direction; | |
195 | ||
196 | if (! bfd_cache_init (nbfd)) | |
252b5132 | 197 | { |
73e87d70 | 198 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
199 | return NULL; |
200 | } | |
2d0123b7 | 201 | nbfd->opened_once = TRUE; |
252b5132 RH |
202 | |
203 | return nbfd; | |
204 | } | |
205 | ||
2d0123b7 MM |
206 | /* |
207 | FUNCTION | |
208 | bfd_openr | |
209 | ||
210 | SYNOPSIS | |
211 | bfd *bfd_openr (const char *filename, const char *target); | |
212 | ||
213 | DESCRIPTION | |
214 | Open the file @var{filename} (using <<fopen>>) with the target | |
215 | @var{target}. Return a pointer to the created BFD. | |
216 | ||
217 | Calls <<bfd_find_target>>, so @var{target} is interpreted as by | |
218 | that function. | |
219 | ||
220 | If <<NULL>> is returned then an error has occured. Possible errors | |
221 | are <<bfd_error_no_memory>>, <<bfd_error_invalid_target>> or | |
222 | <<system_call>> error. | |
223 | */ | |
224 | ||
225 | bfd * | |
226 | bfd_openr (const char *filename, const char *target) | |
227 | { | |
228 | return bfd_fopen (filename, target, FOPEN_RB, -1); | |
229 | } | |
230 | ||
252b5132 RH |
231 | /* Don't try to `optimize' this function: |
232 | ||
233 | o - We lock using stack space so that interrupting the locking | |
234 | won't cause a storage leak. | |
235 | o - We open the file stream last, since we don't want to have to | |
236 | close it if anything goes wrong. Closing the stream means closing | |
c4f3d130 | 237 | the file descriptor too, even though we didn't open it. */ |
252b5132 RH |
238 | /* |
239 | FUNCTION | |
7c4a37eb | 240 | bfd_fdopenr |
252b5132 RH |
241 | |
242 | SYNOPSIS | |
c58b9523 | 243 | bfd *bfd_fdopenr (const char *filename, const char *target, int fd); |
252b5132 RH |
244 | |
245 | DESCRIPTION | |
7c4a37eb AM |
246 | <<bfd_fdopenr>> is to <<bfd_fopenr>> much like <<fdopen>> is to |
247 | <<fopen>>. It opens a BFD on a file already described by the | |
248 | @var{fd} supplied. | |
249 | ||
250 | When the file is later <<bfd_close>>d, the file descriptor will | |
251 | be closed. If the caller desires that this file descriptor be | |
252 | cached by BFD (opened as needed, closed as needed to free | |
253 | descriptors for other opens), with the supplied @var{fd} used as | |
254 | an initial file descriptor (but subject to closure at any time), | |
255 | call bfd_set_cacheable(bfd, 1) on the returned BFD. The default | |
7dee875e | 256 | is to assume no caching; the file descriptor will remain open |
7c4a37eb AM |
257 | until <<bfd_close>>, and will not be affected by BFD operations |
258 | on other files. | |
259 | ||
260 | Possible errors are <<bfd_error_no_memory>>, | |
261 | <<bfd_error_invalid_target>> and <<bfd_error_system_call>>. | |
252b5132 RH |
262 | */ |
263 | ||
264 | bfd * | |
c58b9523 | 265 | bfd_fdopenr (const char *filename, const char *target, int fd) |
252b5132 | 266 | { |
2d0123b7 MM |
267 | const char *mode; |
268 | #if defined(HAVE_FCNTL) && defined(F_GETFL) | |
252b5132 | 269 | int fdflags; |
2d0123b7 | 270 | #endif |
252b5132 RH |
271 | |
272 | bfd_set_error (bfd_error_system_call); | |
273 | #if ! defined(HAVE_FCNTL) || ! defined(F_GETFL) | |
2d0123b7 | 274 | mode = FOPEN_RUB; /* Assume full access. */ |
252b5132 RH |
275 | #else |
276 | fdflags = fcntl (fd, F_GETFL, NULL); | |
767e34d1 AM |
277 | if (fdflags == -1) |
278 | return NULL; | |
252b5132 | 279 | |
c4f3d130 | 280 | /* (O_ACCMODE) parens are to avoid Ultrix header file bug. */ |
252b5132 RH |
281 | switch (fdflags & (O_ACCMODE)) |
282 | { | |
2d0123b7 MM |
283 | case O_RDONLY: mode = FOPEN_RB; |
284 | case O_WRONLY: mode = FOPEN_RUB; | |
285 | case O_RDWR: mode = FOPEN_RUB; | |
252b5132 RH |
286 | default: abort (); |
287 | } | |
288 | #endif | |
289 | ||
2d0123b7 | 290 | return bfd_fopen (filename, target, mode, fd); |
252b5132 RH |
291 | } |
292 | ||
293 | /* | |
294 | FUNCTION | |
295 | bfd_openstreamr | |
296 | ||
297 | SYNOPSIS | |
c58b9523 | 298 | bfd *bfd_openstreamr (const char *, const char *, void *); |
252b5132 RH |
299 | |
300 | DESCRIPTION | |
301 | ||
302 | Open a BFD for read access on an existing stdio stream. When | |
303 | the BFD is passed to <<bfd_close>>, the stream will be closed. | |
304 | */ | |
305 | ||
306 | bfd * | |
c58b9523 | 307 | bfd_openstreamr (const char *filename, const char *target, void *streamarg) |
252b5132 | 308 | { |
c58b9523 | 309 | FILE *stream = streamarg; |
252b5132 RH |
310 | bfd *nbfd; |
311 | const bfd_target *target_vec; | |
312 | ||
313 | nbfd = _bfd_new_bfd (); | |
314 | if (nbfd == NULL) | |
315 | return NULL; | |
316 | ||
317 | target_vec = bfd_find_target (target, nbfd); | |
318 | if (target_vec == NULL) | |
319 | { | |
73e87d70 | 320 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
321 | return NULL; |
322 | } | |
323 | ||
c58b9523 | 324 | nbfd->iostream = stream; |
252b5132 RH |
325 | nbfd->filename = filename; |
326 | nbfd->direction = read_direction; | |
dc810e39 | 327 | |
252b5132 RH |
328 | if (! bfd_cache_init (nbfd)) |
329 | { | |
73e87d70 | 330 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
331 | return NULL; |
332 | } | |
333 | ||
334 | return nbfd; | |
335 | } | |
40838a72 AC |
336 | |
337 | /* | |
338 | FUNCTION | |
339 | bfd_openr_iovec | |
340 | ||
341 | SYNOPSIS | |
342 | bfd *bfd_openr_iovec (const char *filename, const char *target, | |
343 | void *(*open) (struct bfd *nbfd, | |
344 | void *open_closure), | |
345 | void *open_closure, | |
346 | file_ptr (*pread) (struct bfd *nbfd, | |
347 | void *stream, | |
348 | void *buf, | |
349 | file_ptr nbytes, | |
350 | file_ptr offset), | |
351 | int (*close) (struct bfd *nbfd, | |
352 | void *stream)); | |
353 | ||
354 | DESCRIPTION | |
355 | ||
356 | Create and return a BFD backed by a read-only @var{stream}. | |
357 | The @var{stream} is created using @var{open}, accessed using | |
358 | @var{pread} and destroyed using @var{close}. | |
359 | ||
360 | Calls <<bfd_find_target>>, so @var{target} is interpreted as by | |
361 | that function. | |
362 | ||
363 | Calls @var{open} (which can call <<bfd_zalloc>> and | |
364 | <<bfd_get_filename>>) to obtain the read-only stream backing | |
365 | the BFD. @var{open} either succeeds returning the | |
366 | non-<<NULL>> @var{stream}, or fails returning <<NULL>> | |
367 | (setting <<bfd_error>>). | |
368 | ||
369 | Calls @var{pread} to request @var{nbytes} of data from | |
370 | @var{stream} starting at @var{offset} (e.g., via a call to | |
371 | <<bfd_read>>). @var{pread} either succeeds returning the | |
372 | number of bytes read (which can be less than @var{nbytes} when | |
373 | end-of-file), or fails returning -1 (setting <<bfd_error>>). | |
374 | ||
375 | Calls @var{close} when the BFD is later closed using | |
376 | <<bfd_close>>. @var{close} either succeeds returning 0, or | |
377 | fails returning -1 (setting <<bfd_error>>). | |
378 | ||
379 | If <<bfd_openr_iovec>> returns <<NULL>> then an error has | |
380 | occurred. Possible errors are <<bfd_error_no_memory>>, | |
381 | <<bfd_error_invalid_target>> and <<bfd_error_system_call>>. | |
382 | ||
383 | */ | |
384 | ||
385 | struct opncls | |
386 | { | |
387 | void *stream; | |
388 | file_ptr (*pread) (struct bfd *abfd, void *stream, void *buf, | |
389 | file_ptr nbytes, file_ptr offset); | |
390 | int (*close) (struct bfd *abfd, void *stream); | |
391 | file_ptr where; | |
392 | }; | |
393 | ||
394 | static file_ptr | |
395 | opncls_btell (struct bfd *abfd) | |
396 | { | |
397 | struct opncls *vec = abfd->iostream; | |
398 | return vec->where; | |
399 | } | |
400 | ||
401 | static int | |
402 | opncls_bseek (struct bfd *abfd, file_ptr offset, int whence) | |
403 | { | |
404 | struct opncls *vec = abfd->iostream; | |
405 | switch (whence) | |
406 | { | |
407 | case SEEK_SET: vec->where = offset; break; | |
408 | case SEEK_CUR: vec->where += offset; break; | |
409 | case SEEK_END: return -1; | |
410 | } | |
411 | return 0; | |
412 | } | |
413 | ||
414 | static file_ptr | |
415 | opncls_bread (struct bfd *abfd, void *buf, file_ptr nbytes) | |
416 | { | |
417 | struct opncls *vec = abfd->iostream; | |
0709bb22 | 418 | file_ptr nread = (vec->pread) (abfd, vec->stream, buf, nbytes, vec->where); |
40838a72 AC |
419 | if (nread < 0) |
420 | return nread; | |
421 | vec->where += nread; | |
422 | return nread; | |
423 | } | |
424 | ||
425 | static file_ptr | |
426 | opncls_bwrite (struct bfd *abfd ATTRIBUTE_UNUSED, | |
427 | const void *where ATTRIBUTE_UNUSED, | |
428 | file_ptr nbytes ATTRIBUTE_UNUSED) | |
429 | { | |
430 | return -1; | |
431 | } | |
432 | ||
433 | static int | |
434 | opncls_bclose (struct bfd *abfd) | |
435 | { | |
436 | struct opncls *vec = abfd->iostream; | |
437 | /* Since the VEC's memory is bound to the bfd deleting the bfd will | |
438 | free it. */ | |
439 | int status = 0; | |
440 | if (vec->close != NULL) | |
0709bb22 | 441 | status = (vec->close) (abfd, vec->stream); |
40838a72 AC |
442 | abfd->iostream = NULL; |
443 | return status; | |
444 | } | |
445 | ||
446 | static int | |
447 | opncls_bflush (struct bfd *abfd ATTRIBUTE_UNUSED) | |
448 | { | |
449 | return 0; | |
450 | } | |
451 | ||
452 | static int | |
453 | opncls_bstat (struct bfd *abfd ATTRIBUTE_UNUSED, struct stat *sb) | |
454 | { | |
455 | memset (sb, 0, sizeof (*sb)); | |
456 | return 0; | |
457 | } | |
458 | ||
459 | static const struct bfd_iovec opncls_iovec = { | |
460 | &opncls_bread, &opncls_bwrite, &opncls_btell, &opncls_bseek, | |
461 | &opncls_bclose, &opncls_bflush, &opncls_bstat | |
462 | }; | |
463 | ||
464 | bfd * | |
465 | bfd_openr_iovec (const char *filename, const char *target, | |
466 | void *(*open) (struct bfd *nbfd, | |
467 | void *open_closure), | |
468 | void *open_closure, | |
469 | file_ptr (*pread) (struct bfd *abfd, | |
470 | void *stream, | |
471 | void *buf, | |
472 | file_ptr nbytes, | |
473 | file_ptr offset), | |
474 | int (*close) (struct bfd *nbfd, | |
475 | void *stream)) | |
476 | { | |
477 | bfd *nbfd; | |
478 | const bfd_target *target_vec; | |
479 | struct opncls *vec; | |
480 | void *stream; | |
481 | ||
482 | nbfd = _bfd_new_bfd (); | |
483 | if (nbfd == NULL) | |
484 | return NULL; | |
485 | ||
486 | target_vec = bfd_find_target (target, nbfd); | |
487 | if (target_vec == NULL) | |
488 | { | |
489 | _bfd_delete_bfd (nbfd); | |
490 | return NULL; | |
491 | } | |
492 | ||
493 | nbfd->filename = filename; | |
494 | nbfd->direction = read_direction; | |
495 | ||
496 | stream = open (nbfd, open_closure); | |
497 | if (stream == NULL) | |
498 | { | |
499 | _bfd_delete_bfd (nbfd); | |
500 | return NULL; | |
501 | } | |
502 | ||
503 | vec = bfd_zalloc (nbfd, sizeof (struct opncls)); | |
504 | vec->stream = stream; | |
505 | vec->pread = pread; | |
506 | vec->close = close; | |
507 | ||
508 | nbfd->iovec = &opncls_iovec; | |
509 | nbfd->iostream = vec; | |
510 | ||
511 | return nbfd; | |
512 | } | |
252b5132 | 513 | \f |
c4f3d130 NC |
514 | /* bfd_openw -- open for writing. |
515 | Returns a pointer to a freshly-allocated BFD on success, or NULL. | |
252b5132 | 516 | |
c4f3d130 | 517 | See comment by bfd_fdopenr before you try to modify this function. */ |
252b5132 RH |
518 | |
519 | /* | |
520 | FUNCTION | |
521 | bfd_openw | |
522 | ||
523 | SYNOPSIS | |
c58b9523 | 524 | bfd *bfd_openw (const char *filename, const char *target); |
252b5132 RH |
525 | |
526 | DESCRIPTION | |
527 | Create a BFD, associated with file @var{filename}, using the | |
528 | file format @var{target}, and return a pointer to it. | |
529 | ||
530 | Possible errors are <<bfd_error_system_call>>, <<bfd_error_no_memory>>, | |
531 | <<bfd_error_invalid_target>>. | |
532 | */ | |
533 | ||
534 | bfd * | |
c58b9523 | 535 | bfd_openw (const char *filename, const char *target) |
252b5132 RH |
536 | { |
537 | bfd *nbfd; | |
538 | const bfd_target *target_vec; | |
539 | ||
252b5132 | 540 | /* nbfd has to point to head of malloc'ed block so that bfd_close may |
c4f3d130 | 541 | reclaim it correctly. */ |
252b5132 RH |
542 | nbfd = _bfd_new_bfd (); |
543 | if (nbfd == NULL) | |
544 | return NULL; | |
545 | ||
546 | target_vec = bfd_find_target (target, nbfd); | |
547 | if (target_vec == NULL) | |
548 | { | |
73e87d70 | 549 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
550 | return NULL; |
551 | } | |
552 | ||
553 | nbfd->filename = filename; | |
554 | nbfd->direction = write_direction; | |
555 | ||
556 | if (bfd_open_file (nbfd) == NULL) | |
557 | { | |
c4f3d130 NC |
558 | /* File not writeable, etc. */ |
559 | bfd_set_error (bfd_error_system_call); | |
73e87d70 | 560 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
561 | return NULL; |
562 | } | |
563 | ||
564 | return nbfd; | |
565 | } | |
566 | ||
567 | /* | |
568 | ||
569 | FUNCTION | |
570 | bfd_close | |
571 | ||
572 | SYNOPSIS | |
b34976b6 | 573 | bfd_boolean bfd_close (bfd *abfd); |
252b5132 RH |
574 | |
575 | DESCRIPTION | |
576 | ||
7c4a37eb AM |
577 | Close a BFD. If the BFD was open for writing, then pending |
578 | operations are completed and the file written out and closed. | |
579 | If the created file is executable, then <<chmod>> is called | |
580 | to mark it as such. | |
252b5132 RH |
581 | |
582 | All memory attached to the BFD is released. | |
583 | ||
584 | The file descriptor associated with the BFD is closed (even | |
585 | if it was passed in to BFD by <<bfd_fdopenr>>). | |
586 | ||
587 | RETURNS | |
b34976b6 | 588 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. |
252b5132 RH |
589 | */ |
590 | ||
591 | ||
b34976b6 | 592 | bfd_boolean |
c58b9523 | 593 | bfd_close (bfd *abfd) |
252b5132 | 594 | { |
b34976b6 | 595 | bfd_boolean ret; |
252b5132 | 596 | |
c4f3d130 | 597 | if (bfd_write_p (abfd)) |
252b5132 RH |
598 | { |
599 | if (! BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd))) | |
b34976b6 | 600 | return FALSE; |
252b5132 RH |
601 | } |
602 | ||
603 | if (! BFD_SEND (abfd, _close_and_cleanup, (abfd))) | |
b34976b6 | 604 | return FALSE; |
252b5132 | 605 | |
40838a72 AC |
606 | /* FIXME: cagney/2004-02-15: Need to implement a BFD_IN_MEMORY io |
607 | vector. */ | |
608 | if (!(abfd->flags & BFD_IN_MEMORY)) | |
609 | ret = abfd->iovec->bclose (abfd); | |
610 | else | |
ed040321 | 611 | ret = TRUE; |
252b5132 RH |
612 | |
613 | /* If the file was open for writing and is now executable, | |
c4f3d130 | 614 | make it so. */ |
252b5132 RH |
615 | if (ret |
616 | && abfd->direction == write_direction | |
617 | && abfd->flags & EXEC_P) | |
618 | { | |
619 | struct stat buf; | |
620 | ||
621 | if (stat (abfd->filename, &buf) == 0) | |
622 | { | |
7c4a37eb | 623 | unsigned int mask = umask (0); |
c4f3d130 | 624 | |
252b5132 RH |
625 | umask (mask); |
626 | chmod (abfd->filename, | |
627 | (0777 | |
628 | & (buf.st_mode | ((S_IXUSR | S_IXGRP | S_IXOTH) &~ mask)))); | |
629 | } | |
630 | } | |
631 | ||
73e87d70 | 632 | _bfd_delete_bfd (abfd); |
252b5132 RH |
633 | |
634 | return ret; | |
635 | } | |
636 | ||
637 | /* | |
638 | FUNCTION | |
639 | bfd_close_all_done | |
640 | ||
641 | SYNOPSIS | |
b34976b6 | 642 | bfd_boolean bfd_close_all_done (bfd *); |
252b5132 RH |
643 | |
644 | DESCRIPTION | |
7c4a37eb AM |
645 | Close a BFD. Differs from <<bfd_close>> since it does not |
646 | complete any pending operations. This routine would be used | |
647 | if the application had just used BFD for swapping and didn't | |
648 | want to use any of the writing code. | |
252b5132 RH |
649 | |
650 | If the created file is executable, then <<chmod>> is called | |
651 | to mark it as such. | |
652 | ||
653 | All memory attached to the BFD is released. | |
654 | ||
655 | RETURNS | |
b34976b6 | 656 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. |
252b5132 RH |
657 | */ |
658 | ||
b34976b6 | 659 | bfd_boolean |
c58b9523 | 660 | bfd_close_all_done (bfd *abfd) |
252b5132 | 661 | { |
b34976b6 | 662 | bfd_boolean ret; |
252b5132 RH |
663 | |
664 | ret = bfd_cache_close (abfd); | |
665 | ||
666 | /* If the file was open for writing and is now executable, | |
c4f3d130 | 667 | make it so. */ |
252b5132 RH |
668 | if (ret |
669 | && abfd->direction == write_direction | |
670 | && abfd->flags & EXEC_P) | |
671 | { | |
672 | struct stat buf; | |
673 | ||
674 | if (stat (abfd->filename, &buf) == 0) | |
675 | { | |
dc810e39 | 676 | unsigned int mask = umask (0); |
c4f3d130 | 677 | |
252b5132 RH |
678 | umask (mask); |
679 | chmod (abfd->filename, | |
b6cdd0fd | 680 | (0777 |
252b5132 RH |
681 | & (buf.st_mode | ((S_IXUSR | S_IXGRP | S_IXOTH) &~ mask)))); |
682 | } | |
683 | } | |
684 | ||
73e87d70 | 685 | _bfd_delete_bfd (abfd); |
252b5132 RH |
686 | |
687 | return ret; | |
688 | } | |
689 | ||
690 | /* | |
691 | FUNCTION | |
692 | bfd_create | |
693 | ||
694 | SYNOPSIS | |
c58b9523 | 695 | bfd *bfd_create (const char *filename, bfd *templ); |
252b5132 RH |
696 | |
697 | DESCRIPTION | |
7c4a37eb AM |
698 | Create a new BFD in the manner of <<bfd_openw>>, but without |
699 | opening a file. The new BFD takes the target from the target | |
700 | used by @var{template}. The format is always set to <<bfd_object>>. | |
252b5132 RH |
701 | */ |
702 | ||
703 | bfd * | |
c58b9523 | 704 | bfd_create (const char *filename, bfd *templ) |
252b5132 RH |
705 | { |
706 | bfd *nbfd; | |
707 | ||
708 | nbfd = _bfd_new_bfd (); | |
709 | if (nbfd == NULL) | |
710 | return NULL; | |
711 | nbfd->filename = filename; | |
712 | if (templ) | |
713 | nbfd->xvec = templ->xvec; | |
714 | nbfd->direction = no_direction; | |
715 | bfd_set_format (nbfd, bfd_object); | |
c4f3d130 | 716 | |
252b5132 RH |
717 | return nbfd; |
718 | } | |
719 | ||
720 | /* | |
721 | FUNCTION | |
722 | bfd_make_writable | |
723 | ||
724 | SYNOPSIS | |
b34976b6 | 725 | bfd_boolean bfd_make_writable (bfd *abfd); |
252b5132 RH |
726 | |
727 | DESCRIPTION | |
728 | Takes a BFD as created by <<bfd_create>> and converts it | |
729 | into one like as returned by <<bfd_openw>>. It does this | |
730 | by converting the BFD to BFD_IN_MEMORY. It's assumed that | |
731 | you will call <<bfd_make_readable>> on this bfd later. | |
732 | ||
733 | RETURNS | |
b34976b6 | 734 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. |
252b5132 RH |
735 | */ |
736 | ||
b34976b6 | 737 | bfd_boolean |
c58b9523 | 738 | bfd_make_writable (bfd *abfd) |
252b5132 RH |
739 | { |
740 | struct bfd_in_memory *bim; | |
741 | ||
742 | if (abfd->direction != no_direction) | |
743 | { | |
744 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 745 | return FALSE; |
252b5132 RH |
746 | } |
747 | ||
c58b9523 AM |
748 | bim = bfd_malloc (sizeof (struct bfd_in_memory)); |
749 | abfd->iostream = bim; | |
c4f3d130 | 750 | /* bfd_bwrite will grow these as needed. */ |
252b5132 RH |
751 | bim->size = 0; |
752 | bim->buffer = 0; | |
753 | ||
754 | abfd->flags |= BFD_IN_MEMORY; | |
755 | abfd->direction = write_direction; | |
756 | abfd->where = 0; | |
757 | ||
b34976b6 | 758 | return TRUE; |
252b5132 RH |
759 | } |
760 | ||
761 | /* | |
762 | FUNCTION | |
763 | bfd_make_readable | |
764 | ||
765 | SYNOPSIS | |
b34976b6 | 766 | bfd_boolean bfd_make_readable (bfd *abfd); |
252b5132 RH |
767 | |
768 | DESCRIPTION | |
769 | Takes a BFD as created by <<bfd_create>> and | |
770 | <<bfd_make_writable>> and converts it into one like as | |
771 | returned by <<bfd_openr>>. It does this by writing the | |
772 | contents out to the memory buffer, then reversing the | |
773 | direction. | |
774 | ||
775 | RETURNS | |
b34976b6 | 776 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. */ |
252b5132 | 777 | |
b34976b6 | 778 | bfd_boolean |
c58b9523 | 779 | bfd_make_readable (bfd *abfd) |
252b5132 RH |
780 | { |
781 | if (abfd->direction != write_direction || !(abfd->flags & BFD_IN_MEMORY)) | |
782 | { | |
783 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 784 | return FALSE; |
252b5132 RH |
785 | } |
786 | ||
787 | if (! BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd))) | |
b34976b6 | 788 | return FALSE; |
252b5132 RH |
789 | |
790 | if (! BFD_SEND (abfd, _close_and_cleanup, (abfd))) | |
b34976b6 | 791 | return FALSE; |
252b5132 RH |
792 | |
793 | ||
794 | abfd->arch_info = &bfd_default_arch_struct; | |
795 | ||
796 | abfd->where = 0; | |
252b5132 | 797 | abfd->format = bfd_unknown; |
c58b9523 | 798 | abfd->my_archive = NULL; |
dc810e39 | 799 | abfd->origin = 0; |
b34976b6 AM |
800 | abfd->opened_once = FALSE; |
801 | abfd->output_has_begun = FALSE; | |
252b5132 | 802 | abfd->section_count = 0; |
c58b9523 | 803 | abfd->usrdata = NULL; |
b34976b6 | 804 | abfd->cacheable = FALSE; |
252b5132 | 805 | abfd->flags = BFD_IN_MEMORY; |
b34976b6 | 806 | abfd->mtime_set = FALSE; |
252b5132 | 807 | |
b34976b6 | 808 | abfd->target_defaulted = TRUE; |
252b5132 RH |
809 | abfd->direction = read_direction; |
810 | abfd->sections = 0; | |
811 | abfd->symcount = 0; | |
812 | abfd->outsymbols = 0; | |
813 | abfd->tdata.any = 0; | |
814 | ||
e54fdaa5 AM |
815 | bfd_section_list_clear (abfd); |
816 | bfd_check_format (abfd, bfd_object); | |
252b5132 | 817 | |
b34976b6 | 818 | return TRUE; |
252b5132 RH |
819 | } |
820 | ||
821 | /* | |
822 | INTERNAL_FUNCTION | |
823 | bfd_alloc | |
824 | ||
825 | SYNOPSIS | |
0fdea5ce | 826 | void *bfd_alloc (bfd *abfd, bfd_size_type wanted); |
252b5132 RH |
827 | |
828 | DESCRIPTION | |
829 | Allocate a block of @var{wanted} bytes of memory attached to | |
830 | <<abfd>> and return a pointer to it. | |
831 | */ | |
832 | ||
c58b9523 AM |
833 | void * |
834 | bfd_alloc (bfd *abfd, bfd_size_type size) | |
252b5132 | 835 | { |
c58b9523 | 836 | void *ret; |
252b5132 | 837 | |
dc810e39 AM |
838 | if (size != (unsigned long) size) |
839 | { | |
840 | bfd_set_error (bfd_error_no_memory); | |
841 | return NULL; | |
842 | } | |
843 | ||
252b5132 RH |
844 | ret = objalloc_alloc (abfd->memory, (unsigned long) size); |
845 | if (ret == NULL) | |
846 | bfd_set_error (bfd_error_no_memory); | |
847 | return ret; | |
848 | } | |
849 | ||
c3e8c140 BE |
850 | /* |
851 | INTERNAL_FUNCTION | |
852 | bfd_zalloc | |
853 | ||
854 | SYNOPSIS | |
855 | void *bfd_zalloc (bfd *abfd, bfd_size_type wanted); | |
856 | ||
857 | DESCRIPTION | |
858 | Allocate a block of @var{wanted} bytes of zeroed memory | |
859 | attached to <<abfd>> and return a pointer to it. | |
860 | */ | |
861 | ||
c58b9523 AM |
862 | void * |
863 | bfd_zalloc (bfd *abfd, bfd_size_type size) | |
252b5132 | 864 | { |
c58b9523 | 865 | void *res; |
252b5132 RH |
866 | |
867 | res = bfd_alloc (abfd, size); | |
868 | if (res) | |
dc810e39 | 869 | memset (res, 0, (size_t) size); |
252b5132 RH |
870 | return res; |
871 | } | |
872 | ||
73e87d70 AM |
873 | /* Free a block allocated for a BFD. |
874 | Note: Also frees all more recently allocated blocks! */ | |
252b5132 RH |
875 | |
876 | void | |
c58b9523 | 877 | bfd_release (bfd *abfd, void *block) |
252b5132 RH |
878 | { |
879 | objalloc_free_block ((struct objalloc *) abfd->memory, block); | |
880 | } | |
31f7ba04 NC |
881 | |
882 | ||
f12123c0 AM |
883 | /* |
884 | GNU Extension: separate debug-info files | |
885 | ||
31f7ba04 NC |
886 | The idea here is that a special section called .gnu_debuglink might be |
887 | embedded in a binary file, which indicates that some *other* file | |
888 | contains the real debugging information. This special section contains a | |
889 | filename and CRC32 checksum, which we read and resolve to another file, | |
890 | if it exists. | |
891 | ||
892 | This facilitates "optional" provision of debugging information, without | |
893 | having to provide two complete copies of every binary object (with and | |
894 | without debug symbols). | |
895 | */ | |
896 | ||
2593f09a | 897 | #define GNU_DEBUGLINK ".gnu_debuglink" |
31f7ba04 | 898 | /* |
2593f09a NC |
899 | FUNCTION |
900 | bfd_calc_gnu_debuglink_crc32 | |
31f7ba04 NC |
901 | |
902 | SYNOPSIS | |
c58b9523 AM |
903 | unsigned long bfd_calc_gnu_debuglink_crc32 |
904 | (unsigned long crc, const unsigned char *buf, bfd_size_type len); | |
31f7ba04 NC |
905 | |
906 | DESCRIPTION | |
2593f09a NC |
907 | Computes a CRC value as used in the .gnu_debuglink section. |
908 | Advances the previously computed @var{crc} value by computing | |
909 | and adding in the crc32 for @var{len} bytes of @var{buf}. | |
910 | ||
911 | RETURNS | |
912 | Return the updated CRC32 value. | |
f12123c0 | 913 | */ |
31f7ba04 | 914 | |
2593f09a | 915 | unsigned long |
c58b9523 AM |
916 | bfd_calc_gnu_debuglink_crc32 (unsigned long crc, |
917 | const unsigned char *buf, | |
918 | bfd_size_type len) | |
31f7ba04 NC |
919 | { |
920 | static const unsigned long crc32_table[256] = | |
921 | { | |
922 | 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, | |
923 | 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, | |
924 | 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, | |
925 | 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, | |
926 | 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, | |
927 | 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, | |
928 | 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, | |
929 | 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, | |
930 | 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, | |
931 | 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, | |
932 | 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, | |
933 | 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, | |
934 | 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, | |
935 | 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, | |
936 | 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, | |
937 | 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, | |
938 | 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, | |
939 | 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, | |
940 | 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, | |
941 | 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, | |
942 | 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, | |
943 | 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, | |
944 | 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, | |
945 | 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, | |
946 | 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, | |
947 | 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, | |
948 | 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, | |
949 | 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, | |
950 | 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, | |
951 | 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, | |
952 | 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, | |
953 | 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, | |
954 | 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, | |
955 | 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, | |
956 | 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, | |
957 | 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, | |
958 | 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, | |
959 | 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, | |
960 | 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, | |
961 | 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, | |
962 | 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, | |
963 | 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, | |
964 | 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, | |
965 | 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, | |
966 | 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, | |
967 | 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, | |
968 | 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, | |
969 | 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, | |
970 | 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, | |
971 | 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, | |
972 | 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, | |
973 | 0x2d02ef8d | |
974 | }; | |
975 | const unsigned char *end; | |
976 | ||
977 | crc = ~crc & 0xffffffff; | |
978 | for (end = buf + len; buf < end; ++ buf) | |
979 | crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8); | |
980 | return ~crc & 0xffffffff;; | |
981 | } | |
982 | ||
983 | ||
984 | /* | |
985 | INTERNAL_FUNCTION | |
986 | get_debug_link_info | |
987 | ||
988 | SYNOPSIS | |
c58b9523 | 989 | char *get_debug_link_info (bfd *abfd, unsigned long *crc32_out); |
31f7ba04 NC |
990 | |
991 | DESCRIPTION | |
992 | fetch the filename and CRC32 value for any separate debuginfo | |
993 | associated with @var{abfd}. Return NULL if no such info found, | |
994 | otherwise return filename and update @var{crc32_out}. | |
995 | */ | |
996 | ||
997 | static char * | |
c58b9523 | 998 | get_debug_link_info (bfd *abfd, unsigned long *crc32_out) |
31f7ba04 | 999 | { |
eea6121a | 1000 | asection *sect; |
31f7ba04 | 1001 | unsigned long crc32; |
eea6121a | 1002 | bfd_byte *contents; |
31f7ba04 | 1003 | int crc_offset; |
f075ee0c | 1004 | char *name; |
31f7ba04 NC |
1005 | |
1006 | BFD_ASSERT (abfd); | |
1007 | BFD_ASSERT (crc32_out); | |
1008 | ||
2593f09a | 1009 | sect = bfd_get_section_by_name (abfd, GNU_DEBUGLINK); |
31f7ba04 NC |
1010 | |
1011 | if (sect == NULL) | |
1012 | return NULL; | |
1013 | ||
eea6121a | 1014 | if (!bfd_malloc_and_get_section (abfd, sect, &contents)) |
31f7ba04 | 1015 | { |
eea6121a AM |
1016 | if (contents != NULL) |
1017 | free (contents); | |
31f7ba04 NC |
1018 | return NULL; |
1019 | } | |
1020 | ||
1021 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |
f075ee0c AM |
1022 | name = (char *) contents; |
1023 | crc_offset = strlen (name) + 1; | |
31f7ba04 NC |
1024 | crc_offset = (crc_offset + 3) & ~3; |
1025 | ||
c58b9523 | 1026 | crc32 = bfd_get_32 (abfd, contents + crc_offset); |
31f7ba04 NC |
1027 | |
1028 | *crc32_out = crc32; | |
f075ee0c | 1029 | return name; |
31f7ba04 NC |
1030 | } |
1031 | ||
1032 | /* | |
1033 | INTERNAL_FUNCTION | |
1034 | separate_debug_file_exists | |
1035 | ||
1036 | SYNOPSIS | |
c58b9523 AM |
1037 | bfd_boolean separate_debug_file_exists |
1038 | (char *name, unsigned long crc32); | |
31f7ba04 NC |
1039 | |
1040 | DESCRIPTION | |
1041 | Checks to see if @var{name} is a file and if its contents | |
1042 | match @var{crc32}. | |
1043 | */ | |
1044 | ||
1045 | static bfd_boolean | |
c58b9523 | 1046 | separate_debug_file_exists (const char *name, const unsigned long crc) |
31f7ba04 | 1047 | { |
f075ee0c | 1048 | static unsigned char buffer [8 * 1024]; |
31f7ba04 NC |
1049 | unsigned long file_crc = 0; |
1050 | int fd; | |
2593f09a | 1051 | bfd_size_type count; |
31f7ba04 NC |
1052 | |
1053 | BFD_ASSERT (name); | |
1054 | ||
1055 | fd = open (name, O_RDONLY); | |
1056 | if (fd < 0) | |
1057 | return FALSE; | |
1058 | ||
1059 | while ((count = read (fd, buffer, sizeof (buffer))) > 0) | |
2593f09a | 1060 | file_crc = bfd_calc_gnu_debuglink_crc32 (file_crc, buffer, count); |
31f7ba04 NC |
1061 | |
1062 | close (fd); | |
1063 | ||
1064 | return crc == file_crc; | |
1065 | } | |
1066 | ||
1067 | ||
1068 | /* | |
1069 | INTERNAL_FUNCTION | |
1070 | find_separate_debug_file | |
1071 | ||
1072 | SYNOPSIS | |
c58b9523 | 1073 | char *find_separate_debug_file (bfd *abfd); |
31f7ba04 NC |
1074 | |
1075 | DESCRIPTION | |
1076 | Searches @var{abfd} for a reference to separate debugging | |
1077 | information, scans various locations in the filesystem, including | |
1078 | the file tree rooted at @var{debug_file_directory}, and returns a | |
1079 | filename of such debugging information if the file is found and has | |
1080 | matching CRC32. Returns NULL if no reference to debugging file | |
1081 | exists, or file cannot be found. | |
1082 | */ | |
1083 | ||
1084 | static char * | |
c58b9523 | 1085 | find_separate_debug_file (bfd *abfd, const char *debug_file_directory) |
31f7ba04 NC |
1086 | { |
1087 | char *basename; | |
1088 | char *dir; | |
1089 | char *debugfile; | |
1090 | unsigned long crc32; | |
1091 | int i; | |
1092 | ||
1093 | BFD_ASSERT (abfd); | |
1094 | if (debug_file_directory == NULL) | |
1095 | debug_file_directory = "."; | |
1096 | ||
1097 | /* BFD may have been opened from a stream. */ | |
1098 | if (! abfd->filename) | |
1099 | return NULL; | |
1100 | ||
1101 | basename = get_debug_link_info (abfd, & crc32); | |
5ed6aba4 | 1102 | if (basename == NULL) |
31f7ba04 | 1103 | return NULL; |
2593f09a | 1104 | |
5ed6aba4 NC |
1105 | if (strlen (basename) < 1) |
1106 | { | |
1107 | free (basename); | |
1108 | return NULL; | |
1109 | } | |
31f7ba04 | 1110 | |
2593f09a NC |
1111 | dir = strdup (abfd->filename); |
1112 | if (dir == NULL) | |
1113 | { | |
1114 | free (basename); | |
1115 | return NULL; | |
1116 | } | |
31f7ba04 | 1117 | BFD_ASSERT (strlen (dir) != 0); |
f12123c0 | 1118 | |
31f7ba04 NC |
1119 | /* Strip off filename part. */ |
1120 | for (i = strlen (dir) - 1; i >= 0; i--) | |
1121 | if (IS_DIR_SEPARATOR (dir[i])) | |
1122 | break; | |
28d39d1a | 1123 | |
31f7ba04 | 1124 | dir[i + 1] = '\0'; |
f12123c0 | 1125 | BFD_ASSERT (dir[i] == '/' || dir[0] == '\0'); |
31f7ba04 | 1126 | |
2593f09a NC |
1127 | debugfile = malloc (strlen (debug_file_directory) + 1 |
1128 | + strlen (dir) | |
1129 | + strlen (".debug/") | |
f12123c0 | 1130 | + strlen (basename) |
2593f09a NC |
1131 | + 1); |
1132 | if (debugfile == NULL) | |
1133 | { | |
1134 | free (basename); | |
1135 | free (dir); | |
1136 | return NULL; | |
1137 | } | |
31f7ba04 NC |
1138 | |
1139 | /* First try in the same directory as the original file: */ | |
1140 | strcpy (debugfile, dir); | |
1141 | strcat (debugfile, basename); | |
1142 | ||
1143 | if (separate_debug_file_exists (debugfile, crc32)) | |
1144 | { | |
1145 | free (basename); | |
1146 | free (dir); | |
1147 | return debugfile; | |
1148 | } | |
1149 | ||
1150 | /* Then try in a subdirectory called .debug. */ | |
1151 | strcpy (debugfile, dir); | |
1152 | strcat (debugfile, ".debug/"); | |
1153 | strcat (debugfile, basename); | |
1154 | ||
1155 | if (separate_debug_file_exists (debugfile, crc32)) | |
1156 | { | |
1157 | free (basename); | |
1158 | free (dir); | |
1159 | return debugfile; | |
1160 | } | |
1161 | ||
1162 | /* Then try in the global debugfile directory. */ | |
1163 | strcpy (debugfile, debug_file_directory); | |
1164 | i = strlen (debug_file_directory) - 1; | |
1165 | if (i > 0 | |
1166 | && debug_file_directory[i] != '/' | |
1167 | && dir[0] != '/') | |
1168 | strcat (debugfile, "/"); | |
1169 | strcat (debugfile, dir); | |
1170 | strcat (debugfile, basename); | |
1171 | ||
1172 | if (separate_debug_file_exists (debugfile, crc32)) | |
1173 | { | |
1174 | free (basename); | |
1175 | free (dir); | |
1176 | return debugfile; | |
1177 | } | |
1178 | ||
1179 | free (debugfile); | |
1180 | free (basename); | |
1181 | free (dir); | |
1182 | return NULL; | |
1183 | } | |
1184 | ||
1185 | ||
1186 | /* | |
1187 | FUNCTION | |
1188 | bfd_follow_gnu_debuglink | |
1189 | ||
1190 | SYNOPSIS | |
c58b9523 | 1191 | char *bfd_follow_gnu_debuglink (bfd *abfd, const char *dir); |
31f7ba04 NC |
1192 | |
1193 | DESCRIPTION | |
1194 | ||
1195 | Takes a BFD and searches it for a .gnu_debuglink section. If this | |
28d39d1a NC |
1196 | section is found, it examines the section for the name and checksum |
1197 | of a '.debug' file containing auxiliary debugging information. It | |
1198 | then searches the filesystem for this .debug file in some standard | |
31f7ba04 | 1199 | locations, including the directory tree rooted at @var{dir}, and if |
28d39d1a NC |
1200 | found returns the full filename. |
1201 | ||
1202 | If @var{dir} is NULL, it will search a default path configured into | |
1203 | libbfd at build time. [XXX this feature is not currently | |
1204 | implemented]. | |
31f7ba04 NC |
1205 | |
1206 | RETURNS | |
1207 | <<NULL>> on any errors or failure to locate the .debug file, | |
1208 | otherwise a pointer to a heap-allocated string containing the | |
28d39d1a | 1209 | filename. The caller is responsible for freeing this string. |
31f7ba04 NC |
1210 | */ |
1211 | ||
1212 | char * | |
c58b9523 | 1213 | bfd_follow_gnu_debuglink (bfd *abfd, const char *dir) |
31f7ba04 | 1214 | { |
31f7ba04 NC |
1215 | return find_separate_debug_file (abfd, dir); |
1216 | } | |
2593f09a NC |
1217 | |
1218 | /* | |
1219 | FUNCTION | |
e7c81c25 | 1220 | bfd_create_gnu_debuglink_section |
2593f09a NC |
1221 | |
1222 | SYNOPSIS | |
198beae2 | 1223 | struct bfd_section *bfd_create_gnu_debuglink_section |
c58b9523 | 1224 | (bfd *abfd, const char *filename); |
2593f09a NC |
1225 | |
1226 | DESCRIPTION | |
1227 | ||
e7c81c25 NC |
1228 | Takes a @var{BFD} and adds a .gnu_debuglink section to it. The section is sized |
1229 | to be big enough to contain a link to the specified @var{filename}. | |
1230 | ||
1231 | RETURNS | |
1232 | A pointer to the new section is returned if all is ok. Otherwise <<NULL>> is | |
f12123c0 | 1233 | returned and bfd_error is set. |
e7c81c25 NC |
1234 | */ |
1235 | ||
1236 | asection * | |
c58b9523 | 1237 | bfd_create_gnu_debuglink_section (bfd *abfd, const char *filename) |
e7c81c25 | 1238 | { |
c58b9523 AM |
1239 | asection *sect; |
1240 | bfd_size_type debuglink_size; | |
e7c81c25 NC |
1241 | |
1242 | if (abfd == NULL || filename == NULL) | |
1243 | { | |
1244 | bfd_set_error (bfd_error_invalid_operation); | |
1245 | return NULL; | |
1246 | } | |
1247 | ||
1248 | /* Strip off any path components in filename. */ | |
1249 | filename = lbasename (filename); | |
f12123c0 | 1250 | |
e7c81c25 NC |
1251 | sect = bfd_get_section_by_name (abfd, GNU_DEBUGLINK); |
1252 | if (sect) | |
1253 | { | |
1254 | /* Section already exists. */ | |
1255 | bfd_set_error (bfd_error_invalid_operation); | |
1256 | return NULL; | |
1257 | } | |
1258 | ||
1259 | sect = bfd_make_section (abfd, GNU_DEBUGLINK); | |
1260 | if (sect == NULL) | |
1261 | return NULL; | |
1262 | ||
1263 | if (! bfd_set_section_flags (abfd, sect, | |
1264 | SEC_HAS_CONTENTS | SEC_READONLY | SEC_DEBUGGING)) | |
1265 | /* XXX Should we delete the section from the bfd ? */ | |
1266 | return NULL; | |
1267 | ||
f12123c0 | 1268 | |
e7c81c25 NC |
1269 | debuglink_size = strlen (filename) + 1; |
1270 | debuglink_size += 3; | |
1271 | debuglink_size &= ~3; | |
1272 | debuglink_size += 4; | |
1273 | ||
1274 | if (! bfd_set_section_size (abfd, sect, debuglink_size)) | |
1275 | /* XXX Should we delete the section from the bfd ? */ | |
1276 | return NULL; | |
f12123c0 | 1277 | |
e7c81c25 NC |
1278 | return sect; |
1279 | } | |
1280 | ||
1281 | ||
1282 | /* | |
1283 | FUNCTION | |
1284 | bfd_fill_in_gnu_debuglink_section | |
1285 | ||
1286 | SYNOPSIS | |
c58b9523 | 1287 | bfd_boolean bfd_fill_in_gnu_debuglink_section |
198beae2 | 1288 | (bfd *abfd, struct bfd_section *sect, const char *filename); |
e7c81c25 NC |
1289 | |
1290 | DESCRIPTION | |
1291 | ||
1292 | Takes a @var{BFD} and containing a .gnu_debuglink section @var{SECT} | |
1293 | and fills in the contents of the section to contain a link to the | |
1294 | specified @var{filename}. The filename should be relative to the | |
1295 | current directory. | |
2593f09a NC |
1296 | |
1297 | RETURNS | |
1298 | <<TRUE>> is returned if all is ok. Otherwise <<FALSE>> is returned | |
f12123c0 | 1299 | and bfd_error is set. |
2593f09a NC |
1300 | */ |
1301 | ||
1302 | bfd_boolean | |
c58b9523 | 1303 | bfd_fill_in_gnu_debuglink_section (bfd *abfd, |
198beae2 | 1304 | struct bfd_section *sect, |
c58b9523 | 1305 | const char *filename) |
2593f09a | 1306 | { |
2593f09a NC |
1307 | bfd_size_type debuglink_size; |
1308 | unsigned long crc32; | |
1309 | char * contents; | |
1310 | bfd_size_type crc_offset; | |
1311 | FILE * handle; | |
f075ee0c | 1312 | static unsigned char buffer[8 * 1024]; |
2593f09a NC |
1313 | size_t count; |
1314 | ||
e7c81c25 | 1315 | if (abfd == NULL || sect == NULL || filename == NULL) |
2593f09a NC |
1316 | { |
1317 | bfd_set_error (bfd_error_invalid_operation); | |
1318 | return FALSE; | |
1319 | } | |
1320 | ||
1321 | /* Make sure that we can read the file. | |
1322 | XXX - Should we attempt to locate the debug info file using the same | |
1323 | algorithm as gdb ? At the moment, since we are creating the | |
1324 | .gnu_debuglink section, we insist upon the user providing us with a | |
1325 | correct-for-section-creation-time path, but this need not conform to | |
1326 | the gdb location algorithm. */ | |
1327 | handle = fopen (filename, FOPEN_RB); | |
1328 | if (handle == NULL) | |
1329 | { | |
1330 | bfd_set_error (bfd_error_system_call); | |
1331 | return FALSE; | |
1332 | } | |
1333 | ||
1334 | crc32 = 0; | |
1335 | while ((count = fread (buffer, 1, sizeof buffer, handle)) > 0) | |
1336 | crc32 = bfd_calc_gnu_debuglink_crc32 (crc32, buffer, count); | |
1337 | fclose (handle); | |
1338 | ||
1339 | /* Strip off any path components in filename, | |
1340 | now that we no longer need them. */ | |
1341 | filename = lbasename (filename); | |
f12123c0 | 1342 | |
2593f09a NC |
1343 | debuglink_size = strlen (filename) + 1; |
1344 | debuglink_size += 3; | |
1345 | debuglink_size &= ~3; | |
1346 | debuglink_size += 4; | |
1347 | ||
2593f09a NC |
1348 | contents = malloc (debuglink_size); |
1349 | if (contents == NULL) | |
1350 | { | |
1351 | /* XXX Should we delete the section from the bfd ? */ | |
1352 | bfd_set_error (bfd_error_no_memory); | |
1353 | return FALSE; | |
1354 | } | |
1355 | ||
1356 | strcpy (contents, filename); | |
1357 | crc_offset = debuglink_size - 4; | |
1358 | ||
c58b9523 | 1359 | bfd_put_32 (abfd, crc32, contents + crc_offset); |
2593f09a | 1360 | |
c58b9523 | 1361 | if (! bfd_set_section_contents (abfd, sect, contents, 0, debuglink_size)) |
2593f09a NC |
1362 | { |
1363 | /* XXX Should we delete the section from the bfd ? */ | |
1364 | free (contents); | |
1365 | return FALSE; | |
1366 | } | |
1367 | ||
1368 | return TRUE; | |
1369 | } |