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 | ||
a366f4ff MM |
147 | The new BFD is marked as cacheable iff @var{fd} is -1. |
148 | ||
252b5132 | 149 | If <<NULL>> is returned then an error has occured. Possible errors |
7c4a37eb AM |
150 | are <<bfd_error_no_memory>>, <<bfd_error_invalid_target>> or |
151 | <<system_call>> error. | |
252b5132 RH |
152 | */ |
153 | ||
154 | bfd * | |
2d0123b7 | 155 | bfd_fopen (const char *filename, const char *target, const char *mode, int fd) |
252b5132 RH |
156 | { |
157 | bfd *nbfd; | |
158 | const bfd_target *target_vec; | |
159 | ||
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 | { | |
92a7c1b8 | 179 | bfd_set_error (bfd_error_system_call); |
2d0123b7 MM |
180 | _bfd_delete_bfd (nbfd); |
181 | return NULL; | |
182 | } | |
252b5132 | 183 | |
2d0123b7 | 184 | /* OK, put everything where it belongs. */ |
252b5132 | 185 | nbfd->filename = filename; |
252b5132 | 186 | |
2d0123b7 MM |
187 | /* Figure out whether the user is opening the file for reading, |
188 | writing, or both, by looking at the MODE argument. */ | |
189 | if ((mode[0] == 'r' || mode[0] == 'w' || mode[0] == 'a') | |
190 | && mode[1] == '+') | |
191 | nbfd->direction = both_direction; | |
192 | else if (mode[0] == 'r') | |
193 | nbfd->direction = read_direction; | |
194 | else | |
195 | nbfd->direction = write_direction; | |
196 | ||
197 | if (! bfd_cache_init (nbfd)) | |
252b5132 | 198 | { |
73e87d70 | 199 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
200 | return NULL; |
201 | } | |
2d0123b7 | 202 | nbfd->opened_once = TRUE; |
a366f4ff MM |
203 | /* If we opened the file by name, mark it cacheable; we can close it |
204 | and reopen it later. However, if a file descriptor was provided, | |
205 | then it may have been opened with special flags that make it | |
206 | unsafe to close and reopen the file. */ | |
207 | if (fd == -1) | |
208 | bfd_set_cacheable (nbfd, TRUE); | |
252b5132 RH |
209 | |
210 | return nbfd; | |
211 | } | |
212 | ||
2d0123b7 MM |
213 | /* |
214 | FUNCTION | |
215 | bfd_openr | |
216 | ||
217 | SYNOPSIS | |
218 | bfd *bfd_openr (const char *filename, const char *target); | |
219 | ||
220 | DESCRIPTION | |
221 | Open the file @var{filename} (using <<fopen>>) with the target | |
222 | @var{target}. Return a pointer to the created BFD. | |
223 | ||
224 | Calls <<bfd_find_target>>, so @var{target} is interpreted as by | |
225 | that function. | |
226 | ||
227 | If <<NULL>> is returned then an error has occured. Possible errors | |
228 | are <<bfd_error_no_memory>>, <<bfd_error_invalid_target>> or | |
229 | <<system_call>> error. | |
230 | */ | |
231 | ||
232 | bfd * | |
233 | bfd_openr (const char *filename, const char *target) | |
234 | { | |
235 | return bfd_fopen (filename, target, FOPEN_RB, -1); | |
236 | } | |
237 | ||
252b5132 RH |
238 | /* Don't try to `optimize' this function: |
239 | ||
240 | o - We lock using stack space so that interrupting the locking | |
241 | won't cause a storage leak. | |
242 | o - We open the file stream last, since we don't want to have to | |
243 | close it if anything goes wrong. Closing the stream means closing | |
c4f3d130 | 244 | the file descriptor too, even though we didn't open it. */ |
252b5132 RH |
245 | /* |
246 | FUNCTION | |
7c4a37eb | 247 | bfd_fdopenr |
252b5132 RH |
248 | |
249 | SYNOPSIS | |
c58b9523 | 250 | bfd *bfd_fdopenr (const char *filename, const char *target, int fd); |
252b5132 RH |
251 | |
252 | DESCRIPTION | |
7c4a37eb AM |
253 | <<bfd_fdopenr>> is to <<bfd_fopenr>> much like <<fdopen>> is to |
254 | <<fopen>>. It opens a BFD on a file already described by the | |
255 | @var{fd} supplied. | |
256 | ||
257 | When the file is later <<bfd_close>>d, the file descriptor will | |
258 | be closed. If the caller desires that this file descriptor be | |
259 | cached by BFD (opened as needed, closed as needed to free | |
260 | descriptors for other opens), with the supplied @var{fd} used as | |
261 | an initial file descriptor (but subject to closure at any time), | |
262 | call bfd_set_cacheable(bfd, 1) on the returned BFD. The default | |
7dee875e | 263 | is to assume no caching; the file descriptor will remain open |
7c4a37eb AM |
264 | until <<bfd_close>>, and will not be affected by BFD operations |
265 | on other files. | |
266 | ||
267 | Possible errors are <<bfd_error_no_memory>>, | |
268 | <<bfd_error_invalid_target>> and <<bfd_error_system_call>>. | |
252b5132 RH |
269 | */ |
270 | ||
271 | bfd * | |
c58b9523 | 272 | bfd_fdopenr (const char *filename, const char *target, int fd) |
252b5132 | 273 | { |
2d0123b7 MM |
274 | const char *mode; |
275 | #if defined(HAVE_FCNTL) && defined(F_GETFL) | |
252b5132 | 276 | int fdflags; |
2d0123b7 | 277 | #endif |
252b5132 | 278 | |
252b5132 | 279 | #if ! defined(HAVE_FCNTL) || ! defined(F_GETFL) |
2d0123b7 | 280 | mode = FOPEN_RUB; /* Assume full access. */ |
252b5132 RH |
281 | #else |
282 | fdflags = fcntl (fd, F_GETFL, NULL); | |
767e34d1 | 283 | if (fdflags == -1) |
d83747fa AM |
284 | { |
285 | bfd_set_error (bfd_error_system_call); | |
286 | return NULL; | |
287 | } | |
252b5132 | 288 | |
c4f3d130 | 289 | /* (O_ACCMODE) parens are to avoid Ultrix header file bug. */ |
252b5132 RH |
290 | switch (fdflags & (O_ACCMODE)) |
291 | { | |
dfab97d6 MM |
292 | case O_RDONLY: mode = FOPEN_RB; break; |
293 | case O_WRONLY: mode = FOPEN_RUB; break; | |
294 | case O_RDWR: mode = FOPEN_RUB; break; | |
252b5132 RH |
295 | default: abort (); |
296 | } | |
297 | #endif | |
298 | ||
2d0123b7 | 299 | return bfd_fopen (filename, target, mode, fd); |
252b5132 RH |
300 | } |
301 | ||
302 | /* | |
303 | FUNCTION | |
304 | bfd_openstreamr | |
305 | ||
306 | SYNOPSIS | |
c58b9523 | 307 | bfd *bfd_openstreamr (const char *, const char *, void *); |
252b5132 RH |
308 | |
309 | DESCRIPTION | |
310 | ||
311 | Open a BFD for read access on an existing stdio stream. When | |
312 | the BFD is passed to <<bfd_close>>, the stream will be closed. | |
313 | */ | |
314 | ||
315 | bfd * | |
c58b9523 | 316 | bfd_openstreamr (const char *filename, const char *target, void *streamarg) |
252b5132 | 317 | { |
c58b9523 | 318 | FILE *stream = streamarg; |
252b5132 RH |
319 | bfd *nbfd; |
320 | const bfd_target *target_vec; | |
321 | ||
322 | nbfd = _bfd_new_bfd (); | |
323 | if (nbfd == NULL) | |
324 | return NULL; | |
325 | ||
326 | target_vec = bfd_find_target (target, nbfd); | |
327 | if (target_vec == NULL) | |
328 | { | |
73e87d70 | 329 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
330 | return NULL; |
331 | } | |
332 | ||
c58b9523 | 333 | nbfd->iostream = stream; |
252b5132 RH |
334 | nbfd->filename = filename; |
335 | nbfd->direction = read_direction; | |
dc810e39 | 336 | |
252b5132 RH |
337 | if (! bfd_cache_init (nbfd)) |
338 | { | |
73e87d70 | 339 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
340 | return NULL; |
341 | } | |
342 | ||
343 | return nbfd; | |
344 | } | |
40838a72 AC |
345 | |
346 | /* | |
347 | FUNCTION | |
348 | bfd_openr_iovec | |
349 | ||
350 | SYNOPSIS | |
351 | bfd *bfd_openr_iovec (const char *filename, const char *target, | |
352 | void *(*open) (struct bfd *nbfd, | |
353 | void *open_closure), | |
354 | void *open_closure, | |
355 | file_ptr (*pread) (struct bfd *nbfd, | |
356 | void *stream, | |
357 | void *buf, | |
358 | file_ptr nbytes, | |
359 | file_ptr offset), | |
360 | int (*close) (struct bfd *nbfd, | |
361 | void *stream)); | |
362 | ||
363 | DESCRIPTION | |
364 | ||
365 | Create and return a BFD backed by a read-only @var{stream}. | |
366 | The @var{stream} is created using @var{open}, accessed using | |
367 | @var{pread} and destroyed using @var{close}. | |
368 | ||
369 | Calls <<bfd_find_target>>, so @var{target} is interpreted as by | |
370 | that function. | |
371 | ||
372 | Calls @var{open} (which can call <<bfd_zalloc>> and | |
373 | <<bfd_get_filename>>) to obtain the read-only stream backing | |
374 | the BFD. @var{open} either succeeds returning the | |
375 | non-<<NULL>> @var{stream}, or fails returning <<NULL>> | |
376 | (setting <<bfd_error>>). | |
377 | ||
378 | Calls @var{pread} to request @var{nbytes} of data from | |
379 | @var{stream} starting at @var{offset} (e.g., via a call to | |
380 | <<bfd_read>>). @var{pread} either succeeds returning the | |
381 | number of bytes read (which can be less than @var{nbytes} when | |
382 | end-of-file), or fails returning -1 (setting <<bfd_error>>). | |
383 | ||
384 | Calls @var{close} when the BFD is later closed using | |
385 | <<bfd_close>>. @var{close} either succeeds returning 0, or | |
386 | fails returning -1 (setting <<bfd_error>>). | |
387 | ||
388 | If <<bfd_openr_iovec>> returns <<NULL>> then an error has | |
389 | occurred. Possible errors are <<bfd_error_no_memory>>, | |
390 | <<bfd_error_invalid_target>> and <<bfd_error_system_call>>. | |
391 | ||
392 | */ | |
393 | ||
394 | struct opncls | |
395 | { | |
396 | void *stream; | |
397 | file_ptr (*pread) (struct bfd *abfd, void *stream, void *buf, | |
398 | file_ptr nbytes, file_ptr offset); | |
399 | int (*close) (struct bfd *abfd, void *stream); | |
400 | file_ptr where; | |
401 | }; | |
402 | ||
403 | static file_ptr | |
404 | opncls_btell (struct bfd *abfd) | |
405 | { | |
406 | struct opncls *vec = abfd->iostream; | |
407 | return vec->where; | |
408 | } | |
409 | ||
410 | static int | |
411 | opncls_bseek (struct bfd *abfd, file_ptr offset, int whence) | |
412 | { | |
413 | struct opncls *vec = abfd->iostream; | |
414 | switch (whence) | |
415 | { | |
416 | case SEEK_SET: vec->where = offset; break; | |
417 | case SEEK_CUR: vec->where += offset; break; | |
418 | case SEEK_END: return -1; | |
419 | } | |
420 | return 0; | |
421 | } | |
422 | ||
423 | static file_ptr | |
424 | opncls_bread (struct bfd *abfd, void *buf, file_ptr nbytes) | |
425 | { | |
426 | struct opncls *vec = abfd->iostream; | |
0709bb22 | 427 | file_ptr nread = (vec->pread) (abfd, vec->stream, buf, nbytes, vec->where); |
40838a72 AC |
428 | if (nread < 0) |
429 | return nread; | |
430 | vec->where += nread; | |
431 | return nread; | |
432 | } | |
433 | ||
434 | static file_ptr | |
435 | opncls_bwrite (struct bfd *abfd ATTRIBUTE_UNUSED, | |
436 | const void *where ATTRIBUTE_UNUSED, | |
437 | file_ptr nbytes ATTRIBUTE_UNUSED) | |
438 | { | |
439 | return -1; | |
440 | } | |
441 | ||
442 | static int | |
443 | opncls_bclose (struct bfd *abfd) | |
444 | { | |
445 | struct opncls *vec = abfd->iostream; | |
446 | /* Since the VEC's memory is bound to the bfd deleting the bfd will | |
447 | free it. */ | |
448 | int status = 0; | |
449 | if (vec->close != NULL) | |
0709bb22 | 450 | status = (vec->close) (abfd, vec->stream); |
40838a72 AC |
451 | abfd->iostream = NULL; |
452 | return status; | |
453 | } | |
454 | ||
455 | static int | |
456 | opncls_bflush (struct bfd *abfd ATTRIBUTE_UNUSED) | |
457 | { | |
458 | return 0; | |
459 | } | |
460 | ||
461 | static int | |
462 | opncls_bstat (struct bfd *abfd ATTRIBUTE_UNUSED, struct stat *sb) | |
463 | { | |
464 | memset (sb, 0, sizeof (*sb)); | |
465 | return 0; | |
466 | } | |
467 | ||
468 | static const struct bfd_iovec opncls_iovec = { | |
469 | &opncls_bread, &opncls_bwrite, &opncls_btell, &opncls_bseek, | |
470 | &opncls_bclose, &opncls_bflush, &opncls_bstat | |
471 | }; | |
472 | ||
473 | bfd * | |
474 | bfd_openr_iovec (const char *filename, const char *target, | |
475 | void *(*open) (struct bfd *nbfd, | |
476 | void *open_closure), | |
477 | void *open_closure, | |
478 | file_ptr (*pread) (struct bfd *abfd, | |
479 | void *stream, | |
480 | void *buf, | |
481 | file_ptr nbytes, | |
482 | file_ptr offset), | |
483 | int (*close) (struct bfd *nbfd, | |
484 | void *stream)) | |
485 | { | |
486 | bfd *nbfd; | |
487 | const bfd_target *target_vec; | |
488 | struct opncls *vec; | |
489 | void *stream; | |
490 | ||
491 | nbfd = _bfd_new_bfd (); | |
492 | if (nbfd == NULL) | |
493 | return NULL; | |
494 | ||
495 | target_vec = bfd_find_target (target, nbfd); | |
496 | if (target_vec == NULL) | |
497 | { | |
498 | _bfd_delete_bfd (nbfd); | |
499 | return NULL; | |
500 | } | |
501 | ||
502 | nbfd->filename = filename; | |
503 | nbfd->direction = read_direction; | |
504 | ||
505 | stream = open (nbfd, open_closure); | |
506 | if (stream == NULL) | |
507 | { | |
508 | _bfd_delete_bfd (nbfd); | |
509 | return NULL; | |
510 | } | |
511 | ||
512 | vec = bfd_zalloc (nbfd, sizeof (struct opncls)); | |
513 | vec->stream = stream; | |
514 | vec->pread = pread; | |
515 | vec->close = close; | |
516 | ||
517 | nbfd->iovec = &opncls_iovec; | |
518 | nbfd->iostream = vec; | |
519 | ||
520 | return nbfd; | |
521 | } | |
252b5132 | 522 | \f |
c4f3d130 NC |
523 | /* bfd_openw -- open for writing. |
524 | Returns a pointer to a freshly-allocated BFD on success, or NULL. | |
252b5132 | 525 | |
c4f3d130 | 526 | See comment by bfd_fdopenr before you try to modify this function. */ |
252b5132 RH |
527 | |
528 | /* | |
529 | FUNCTION | |
530 | bfd_openw | |
531 | ||
532 | SYNOPSIS | |
c58b9523 | 533 | bfd *bfd_openw (const char *filename, const char *target); |
252b5132 RH |
534 | |
535 | DESCRIPTION | |
536 | Create a BFD, associated with file @var{filename}, using the | |
537 | file format @var{target}, and return a pointer to it. | |
538 | ||
539 | Possible errors are <<bfd_error_system_call>>, <<bfd_error_no_memory>>, | |
540 | <<bfd_error_invalid_target>>. | |
541 | */ | |
542 | ||
543 | bfd * | |
c58b9523 | 544 | bfd_openw (const char *filename, const char *target) |
252b5132 RH |
545 | { |
546 | bfd *nbfd; | |
547 | const bfd_target *target_vec; | |
548 | ||
252b5132 | 549 | /* nbfd has to point to head of malloc'ed block so that bfd_close may |
c4f3d130 | 550 | reclaim it correctly. */ |
252b5132 RH |
551 | nbfd = _bfd_new_bfd (); |
552 | if (nbfd == NULL) | |
553 | return NULL; | |
554 | ||
555 | target_vec = bfd_find_target (target, nbfd); | |
556 | if (target_vec == NULL) | |
557 | { | |
73e87d70 | 558 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
559 | return NULL; |
560 | } | |
561 | ||
562 | nbfd->filename = filename; | |
563 | nbfd->direction = write_direction; | |
564 | ||
565 | if (bfd_open_file (nbfd) == NULL) | |
566 | { | |
c4f3d130 NC |
567 | /* File not writeable, etc. */ |
568 | bfd_set_error (bfd_error_system_call); | |
73e87d70 | 569 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
570 | return NULL; |
571 | } | |
572 | ||
573 | return nbfd; | |
574 | } | |
575 | ||
576 | /* | |
577 | ||
578 | FUNCTION | |
579 | bfd_close | |
580 | ||
581 | SYNOPSIS | |
b34976b6 | 582 | bfd_boolean bfd_close (bfd *abfd); |
252b5132 RH |
583 | |
584 | DESCRIPTION | |
585 | ||
7c4a37eb AM |
586 | Close a BFD. If the BFD was open for writing, then pending |
587 | operations are completed and the file written out and closed. | |
588 | If the created file is executable, then <<chmod>> is called | |
589 | to mark it as such. | |
252b5132 RH |
590 | |
591 | All memory attached to the BFD is released. | |
592 | ||
593 | The file descriptor associated with the BFD is closed (even | |
594 | if it was passed in to BFD by <<bfd_fdopenr>>). | |
595 | ||
596 | RETURNS | |
b34976b6 | 597 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. |
252b5132 RH |
598 | */ |
599 | ||
600 | ||
b34976b6 | 601 | bfd_boolean |
c58b9523 | 602 | bfd_close (bfd *abfd) |
252b5132 | 603 | { |
b34976b6 | 604 | bfd_boolean ret; |
252b5132 | 605 | |
c4f3d130 | 606 | if (bfd_write_p (abfd)) |
252b5132 RH |
607 | { |
608 | if (! BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd))) | |
b34976b6 | 609 | return FALSE; |
252b5132 RH |
610 | } |
611 | ||
612 | if (! BFD_SEND (abfd, _close_and_cleanup, (abfd))) | |
b34976b6 | 613 | return FALSE; |
252b5132 | 614 | |
40838a72 AC |
615 | /* FIXME: cagney/2004-02-15: Need to implement a BFD_IN_MEMORY io |
616 | vector. */ | |
617 | if (!(abfd->flags & BFD_IN_MEMORY)) | |
618 | ret = abfd->iovec->bclose (abfd); | |
619 | else | |
ed040321 | 620 | ret = TRUE; |
252b5132 RH |
621 | |
622 | /* If the file was open for writing and is now executable, | |
c4f3d130 | 623 | make it so. */ |
252b5132 RH |
624 | if (ret |
625 | && abfd->direction == write_direction | |
626 | && abfd->flags & EXEC_P) | |
627 | { | |
628 | struct stat buf; | |
629 | ||
630 | if (stat (abfd->filename, &buf) == 0) | |
631 | { | |
7c4a37eb | 632 | unsigned int mask = umask (0); |
c4f3d130 | 633 | |
252b5132 RH |
634 | umask (mask); |
635 | chmod (abfd->filename, | |
636 | (0777 | |
637 | & (buf.st_mode | ((S_IXUSR | S_IXGRP | S_IXOTH) &~ mask)))); | |
638 | } | |
639 | } | |
640 | ||
73e87d70 | 641 | _bfd_delete_bfd (abfd); |
252b5132 RH |
642 | |
643 | return ret; | |
644 | } | |
645 | ||
646 | /* | |
647 | FUNCTION | |
648 | bfd_close_all_done | |
649 | ||
650 | SYNOPSIS | |
b34976b6 | 651 | bfd_boolean bfd_close_all_done (bfd *); |
252b5132 RH |
652 | |
653 | DESCRIPTION | |
7c4a37eb AM |
654 | Close a BFD. Differs from <<bfd_close>> since it does not |
655 | complete any pending operations. This routine would be used | |
656 | if the application had just used BFD for swapping and didn't | |
657 | want to use any of the writing code. | |
252b5132 RH |
658 | |
659 | If the created file is executable, then <<chmod>> is called | |
660 | to mark it as such. | |
661 | ||
662 | All memory attached to the BFD is released. | |
663 | ||
664 | RETURNS | |
b34976b6 | 665 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. |
252b5132 RH |
666 | */ |
667 | ||
b34976b6 | 668 | bfd_boolean |
c58b9523 | 669 | bfd_close_all_done (bfd *abfd) |
252b5132 | 670 | { |
b34976b6 | 671 | bfd_boolean ret; |
252b5132 RH |
672 | |
673 | ret = bfd_cache_close (abfd); | |
674 | ||
675 | /* If the file was open for writing and is now executable, | |
c4f3d130 | 676 | make it so. */ |
252b5132 RH |
677 | if (ret |
678 | && abfd->direction == write_direction | |
679 | && abfd->flags & EXEC_P) | |
680 | { | |
681 | struct stat buf; | |
682 | ||
683 | if (stat (abfd->filename, &buf) == 0) | |
684 | { | |
dc810e39 | 685 | unsigned int mask = umask (0); |
c4f3d130 | 686 | |
252b5132 RH |
687 | umask (mask); |
688 | chmod (abfd->filename, | |
b6cdd0fd | 689 | (0777 |
252b5132 RH |
690 | & (buf.st_mode | ((S_IXUSR | S_IXGRP | S_IXOTH) &~ mask)))); |
691 | } | |
692 | } | |
693 | ||
73e87d70 | 694 | _bfd_delete_bfd (abfd); |
252b5132 RH |
695 | |
696 | return ret; | |
697 | } | |
698 | ||
699 | /* | |
700 | FUNCTION | |
701 | bfd_create | |
702 | ||
703 | SYNOPSIS | |
c58b9523 | 704 | bfd *bfd_create (const char *filename, bfd *templ); |
252b5132 RH |
705 | |
706 | DESCRIPTION | |
7c4a37eb AM |
707 | Create a new BFD in the manner of <<bfd_openw>>, but without |
708 | opening a file. The new BFD takes the target from the target | |
709 | used by @var{template}. The format is always set to <<bfd_object>>. | |
252b5132 RH |
710 | */ |
711 | ||
712 | bfd * | |
c58b9523 | 713 | bfd_create (const char *filename, bfd *templ) |
252b5132 RH |
714 | { |
715 | bfd *nbfd; | |
716 | ||
717 | nbfd = _bfd_new_bfd (); | |
718 | if (nbfd == NULL) | |
719 | return NULL; | |
720 | nbfd->filename = filename; | |
721 | if (templ) | |
722 | nbfd->xvec = templ->xvec; | |
723 | nbfd->direction = no_direction; | |
724 | bfd_set_format (nbfd, bfd_object); | |
c4f3d130 | 725 | |
252b5132 RH |
726 | return nbfd; |
727 | } | |
728 | ||
729 | /* | |
730 | FUNCTION | |
731 | bfd_make_writable | |
732 | ||
733 | SYNOPSIS | |
b34976b6 | 734 | bfd_boolean bfd_make_writable (bfd *abfd); |
252b5132 RH |
735 | |
736 | DESCRIPTION | |
737 | Takes a BFD as created by <<bfd_create>> and converts it | |
738 | into one like as returned by <<bfd_openw>>. It does this | |
739 | by converting the BFD to BFD_IN_MEMORY. It's assumed that | |
740 | you will call <<bfd_make_readable>> on this bfd later. | |
741 | ||
742 | RETURNS | |
b34976b6 | 743 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. |
252b5132 RH |
744 | */ |
745 | ||
b34976b6 | 746 | bfd_boolean |
c58b9523 | 747 | bfd_make_writable (bfd *abfd) |
252b5132 RH |
748 | { |
749 | struct bfd_in_memory *bim; | |
750 | ||
751 | if (abfd->direction != no_direction) | |
752 | { | |
753 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 754 | return FALSE; |
252b5132 RH |
755 | } |
756 | ||
c58b9523 AM |
757 | bim = bfd_malloc (sizeof (struct bfd_in_memory)); |
758 | abfd->iostream = bim; | |
c4f3d130 | 759 | /* bfd_bwrite will grow these as needed. */ |
252b5132 RH |
760 | bim->size = 0; |
761 | bim->buffer = 0; | |
762 | ||
763 | abfd->flags |= BFD_IN_MEMORY; | |
764 | abfd->direction = write_direction; | |
765 | abfd->where = 0; | |
766 | ||
b34976b6 | 767 | return TRUE; |
252b5132 RH |
768 | } |
769 | ||
770 | /* | |
771 | FUNCTION | |
772 | bfd_make_readable | |
773 | ||
774 | SYNOPSIS | |
b34976b6 | 775 | bfd_boolean bfd_make_readable (bfd *abfd); |
252b5132 RH |
776 | |
777 | DESCRIPTION | |
778 | Takes a BFD as created by <<bfd_create>> and | |
779 | <<bfd_make_writable>> and converts it into one like as | |
780 | returned by <<bfd_openr>>. It does this by writing the | |
781 | contents out to the memory buffer, then reversing the | |
782 | direction. | |
783 | ||
784 | RETURNS | |
b34976b6 | 785 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. */ |
252b5132 | 786 | |
b34976b6 | 787 | bfd_boolean |
c58b9523 | 788 | bfd_make_readable (bfd *abfd) |
252b5132 RH |
789 | { |
790 | if (abfd->direction != write_direction || !(abfd->flags & BFD_IN_MEMORY)) | |
791 | { | |
792 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 793 | return FALSE; |
252b5132 RH |
794 | } |
795 | ||
796 | if (! BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd))) | |
b34976b6 | 797 | return FALSE; |
252b5132 RH |
798 | |
799 | if (! BFD_SEND (abfd, _close_and_cleanup, (abfd))) | |
b34976b6 | 800 | return FALSE; |
252b5132 RH |
801 | |
802 | ||
803 | abfd->arch_info = &bfd_default_arch_struct; | |
804 | ||
805 | abfd->where = 0; | |
252b5132 | 806 | abfd->format = bfd_unknown; |
c58b9523 | 807 | abfd->my_archive = NULL; |
dc810e39 | 808 | abfd->origin = 0; |
b34976b6 AM |
809 | abfd->opened_once = FALSE; |
810 | abfd->output_has_begun = FALSE; | |
252b5132 | 811 | abfd->section_count = 0; |
c58b9523 | 812 | abfd->usrdata = NULL; |
b34976b6 | 813 | abfd->cacheable = FALSE; |
252b5132 | 814 | abfd->flags = BFD_IN_MEMORY; |
b34976b6 | 815 | abfd->mtime_set = FALSE; |
252b5132 | 816 | |
b34976b6 | 817 | abfd->target_defaulted = TRUE; |
252b5132 RH |
818 | abfd->direction = read_direction; |
819 | abfd->sections = 0; | |
820 | abfd->symcount = 0; | |
821 | abfd->outsymbols = 0; | |
822 | abfd->tdata.any = 0; | |
823 | ||
e54fdaa5 AM |
824 | bfd_section_list_clear (abfd); |
825 | bfd_check_format (abfd, bfd_object); | |
252b5132 | 826 | |
b34976b6 | 827 | return TRUE; |
252b5132 RH |
828 | } |
829 | ||
830 | /* | |
831 | INTERNAL_FUNCTION | |
832 | bfd_alloc | |
833 | ||
834 | SYNOPSIS | |
0fdea5ce | 835 | void *bfd_alloc (bfd *abfd, bfd_size_type wanted); |
252b5132 RH |
836 | |
837 | DESCRIPTION | |
838 | Allocate a block of @var{wanted} bytes of memory attached to | |
839 | <<abfd>> and return a pointer to it. | |
840 | */ | |
841 | ||
c58b9523 AM |
842 | void * |
843 | bfd_alloc (bfd *abfd, bfd_size_type size) | |
252b5132 | 844 | { |
c58b9523 | 845 | void *ret; |
252b5132 | 846 | |
dc810e39 AM |
847 | if (size != (unsigned long) size) |
848 | { | |
849 | bfd_set_error (bfd_error_no_memory); | |
850 | return NULL; | |
851 | } | |
852 | ||
252b5132 RH |
853 | ret = objalloc_alloc (abfd->memory, (unsigned long) size); |
854 | if (ret == NULL) | |
855 | bfd_set_error (bfd_error_no_memory); | |
856 | return ret; | |
857 | } | |
858 | ||
c3e8c140 BE |
859 | /* |
860 | INTERNAL_FUNCTION | |
861 | bfd_zalloc | |
862 | ||
863 | SYNOPSIS | |
864 | void *bfd_zalloc (bfd *abfd, bfd_size_type wanted); | |
865 | ||
866 | DESCRIPTION | |
867 | Allocate a block of @var{wanted} bytes of zeroed memory | |
868 | attached to <<abfd>> and return a pointer to it. | |
869 | */ | |
870 | ||
c58b9523 AM |
871 | void * |
872 | bfd_zalloc (bfd *abfd, bfd_size_type size) | |
252b5132 | 873 | { |
c58b9523 | 874 | void *res; |
252b5132 RH |
875 | |
876 | res = bfd_alloc (abfd, size); | |
877 | if (res) | |
dc810e39 | 878 | memset (res, 0, (size_t) size); |
252b5132 RH |
879 | return res; |
880 | } | |
881 | ||
73e87d70 AM |
882 | /* Free a block allocated for a BFD. |
883 | Note: Also frees all more recently allocated blocks! */ | |
252b5132 RH |
884 | |
885 | void | |
c58b9523 | 886 | bfd_release (bfd *abfd, void *block) |
252b5132 RH |
887 | { |
888 | objalloc_free_block ((struct objalloc *) abfd->memory, block); | |
889 | } | |
31f7ba04 NC |
890 | |
891 | ||
f12123c0 AM |
892 | /* |
893 | GNU Extension: separate debug-info files | |
894 | ||
31f7ba04 NC |
895 | The idea here is that a special section called .gnu_debuglink might be |
896 | embedded in a binary file, which indicates that some *other* file | |
897 | contains the real debugging information. This special section contains a | |
898 | filename and CRC32 checksum, which we read and resolve to another file, | |
899 | if it exists. | |
900 | ||
901 | This facilitates "optional" provision of debugging information, without | |
902 | having to provide two complete copies of every binary object (with and | |
903 | without debug symbols). | |
904 | */ | |
905 | ||
2593f09a | 906 | #define GNU_DEBUGLINK ".gnu_debuglink" |
31f7ba04 | 907 | /* |
2593f09a NC |
908 | FUNCTION |
909 | bfd_calc_gnu_debuglink_crc32 | |
31f7ba04 NC |
910 | |
911 | SYNOPSIS | |
c58b9523 AM |
912 | unsigned long bfd_calc_gnu_debuglink_crc32 |
913 | (unsigned long crc, const unsigned char *buf, bfd_size_type len); | |
31f7ba04 NC |
914 | |
915 | DESCRIPTION | |
2593f09a NC |
916 | Computes a CRC value as used in the .gnu_debuglink section. |
917 | Advances the previously computed @var{crc} value by computing | |
918 | and adding in the crc32 for @var{len} bytes of @var{buf}. | |
919 | ||
920 | RETURNS | |
921 | Return the updated CRC32 value. | |
f12123c0 | 922 | */ |
31f7ba04 | 923 | |
2593f09a | 924 | unsigned long |
c58b9523 AM |
925 | bfd_calc_gnu_debuglink_crc32 (unsigned long crc, |
926 | const unsigned char *buf, | |
927 | bfd_size_type len) | |
31f7ba04 NC |
928 | { |
929 | static const unsigned long crc32_table[256] = | |
930 | { | |
931 | 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, | |
932 | 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, | |
933 | 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, | |
934 | 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, | |
935 | 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, | |
936 | 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, | |
937 | 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, | |
938 | 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, | |
939 | 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, | |
940 | 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, | |
941 | 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, | |
942 | 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, | |
943 | 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, | |
944 | 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, | |
945 | 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, | |
946 | 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, | |
947 | 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, | |
948 | 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, | |
949 | 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, | |
950 | 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, | |
951 | 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, | |
952 | 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, | |
953 | 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, | |
954 | 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, | |
955 | 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, | |
956 | 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, | |
957 | 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, | |
958 | 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, | |
959 | 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, | |
960 | 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, | |
961 | 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, | |
962 | 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, | |
963 | 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, | |
964 | 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, | |
965 | 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, | |
966 | 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, | |
967 | 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, | |
968 | 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, | |
969 | 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, | |
970 | 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, | |
971 | 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, | |
972 | 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, | |
973 | 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, | |
974 | 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, | |
975 | 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, | |
976 | 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, | |
977 | 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, | |
978 | 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, | |
979 | 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, | |
980 | 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, | |
981 | 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, | |
982 | 0x2d02ef8d | |
983 | }; | |
984 | const unsigned char *end; | |
985 | ||
986 | crc = ~crc & 0xffffffff; | |
987 | for (end = buf + len; buf < end; ++ buf) | |
988 | crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8); | |
989 | return ~crc & 0xffffffff;; | |
990 | } | |
991 | ||
992 | ||
993 | /* | |
994 | INTERNAL_FUNCTION | |
995 | get_debug_link_info | |
996 | ||
997 | SYNOPSIS | |
c58b9523 | 998 | char *get_debug_link_info (bfd *abfd, unsigned long *crc32_out); |
31f7ba04 NC |
999 | |
1000 | DESCRIPTION | |
1001 | fetch the filename and CRC32 value for any separate debuginfo | |
1002 | associated with @var{abfd}. Return NULL if no such info found, | |
1003 | otherwise return filename and update @var{crc32_out}. | |
1004 | */ | |
1005 | ||
1006 | static char * | |
c58b9523 | 1007 | get_debug_link_info (bfd *abfd, unsigned long *crc32_out) |
31f7ba04 | 1008 | { |
eea6121a | 1009 | asection *sect; |
31f7ba04 | 1010 | unsigned long crc32; |
eea6121a | 1011 | bfd_byte *contents; |
31f7ba04 | 1012 | int crc_offset; |
f075ee0c | 1013 | char *name; |
31f7ba04 NC |
1014 | |
1015 | BFD_ASSERT (abfd); | |
1016 | BFD_ASSERT (crc32_out); | |
1017 | ||
2593f09a | 1018 | sect = bfd_get_section_by_name (abfd, GNU_DEBUGLINK); |
31f7ba04 NC |
1019 | |
1020 | if (sect == NULL) | |
1021 | return NULL; | |
1022 | ||
eea6121a | 1023 | if (!bfd_malloc_and_get_section (abfd, sect, &contents)) |
31f7ba04 | 1024 | { |
eea6121a AM |
1025 | if (contents != NULL) |
1026 | free (contents); | |
31f7ba04 NC |
1027 | return NULL; |
1028 | } | |
1029 | ||
1030 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |
f075ee0c AM |
1031 | name = (char *) contents; |
1032 | crc_offset = strlen (name) + 1; | |
31f7ba04 NC |
1033 | crc_offset = (crc_offset + 3) & ~3; |
1034 | ||
c58b9523 | 1035 | crc32 = bfd_get_32 (abfd, contents + crc_offset); |
31f7ba04 NC |
1036 | |
1037 | *crc32_out = crc32; | |
f075ee0c | 1038 | return name; |
31f7ba04 NC |
1039 | } |
1040 | ||
1041 | /* | |
1042 | INTERNAL_FUNCTION | |
1043 | separate_debug_file_exists | |
1044 | ||
1045 | SYNOPSIS | |
c58b9523 AM |
1046 | bfd_boolean separate_debug_file_exists |
1047 | (char *name, unsigned long crc32); | |
31f7ba04 NC |
1048 | |
1049 | DESCRIPTION | |
1050 | Checks to see if @var{name} is a file and if its contents | |
1051 | match @var{crc32}. | |
1052 | */ | |
1053 | ||
1054 | static bfd_boolean | |
c58b9523 | 1055 | separate_debug_file_exists (const char *name, const unsigned long crc) |
31f7ba04 | 1056 | { |
f075ee0c | 1057 | static unsigned char buffer [8 * 1024]; |
31f7ba04 NC |
1058 | unsigned long file_crc = 0; |
1059 | int fd; | |
2593f09a | 1060 | bfd_size_type count; |
31f7ba04 NC |
1061 | |
1062 | BFD_ASSERT (name); | |
1063 | ||
1064 | fd = open (name, O_RDONLY); | |
1065 | if (fd < 0) | |
1066 | return FALSE; | |
1067 | ||
1068 | while ((count = read (fd, buffer, sizeof (buffer))) > 0) | |
2593f09a | 1069 | file_crc = bfd_calc_gnu_debuglink_crc32 (file_crc, buffer, count); |
31f7ba04 NC |
1070 | |
1071 | close (fd); | |
1072 | ||
1073 | return crc == file_crc; | |
1074 | } | |
1075 | ||
1076 | ||
1077 | /* | |
1078 | INTERNAL_FUNCTION | |
1079 | find_separate_debug_file | |
1080 | ||
1081 | SYNOPSIS | |
c58b9523 | 1082 | char *find_separate_debug_file (bfd *abfd); |
31f7ba04 NC |
1083 | |
1084 | DESCRIPTION | |
1085 | Searches @var{abfd} for a reference to separate debugging | |
1086 | information, scans various locations in the filesystem, including | |
1087 | the file tree rooted at @var{debug_file_directory}, and returns a | |
1088 | filename of such debugging information if the file is found and has | |
1089 | matching CRC32. Returns NULL if no reference to debugging file | |
1090 | exists, or file cannot be found. | |
1091 | */ | |
1092 | ||
1093 | static char * | |
c58b9523 | 1094 | find_separate_debug_file (bfd *abfd, const char *debug_file_directory) |
31f7ba04 NC |
1095 | { |
1096 | char *basename; | |
1097 | char *dir; | |
1098 | char *debugfile; | |
1099 | unsigned long crc32; | |
1100 | int i; | |
1101 | ||
1102 | BFD_ASSERT (abfd); | |
1103 | if (debug_file_directory == NULL) | |
1104 | debug_file_directory = "."; | |
1105 | ||
1106 | /* BFD may have been opened from a stream. */ | |
1107 | if (! abfd->filename) | |
1108 | return NULL; | |
1109 | ||
1110 | basename = get_debug_link_info (abfd, & crc32); | |
5ed6aba4 | 1111 | if (basename == NULL) |
31f7ba04 | 1112 | return NULL; |
2593f09a | 1113 | |
5ed6aba4 NC |
1114 | if (strlen (basename) < 1) |
1115 | { | |
1116 | free (basename); | |
1117 | return NULL; | |
1118 | } | |
31f7ba04 | 1119 | |
2593f09a NC |
1120 | dir = strdup (abfd->filename); |
1121 | if (dir == NULL) | |
1122 | { | |
1123 | free (basename); | |
1124 | return NULL; | |
1125 | } | |
31f7ba04 | 1126 | BFD_ASSERT (strlen (dir) != 0); |
f12123c0 | 1127 | |
31f7ba04 NC |
1128 | /* Strip off filename part. */ |
1129 | for (i = strlen (dir) - 1; i >= 0; i--) | |
1130 | if (IS_DIR_SEPARATOR (dir[i])) | |
1131 | break; | |
28d39d1a | 1132 | |
31f7ba04 | 1133 | dir[i + 1] = '\0'; |
f12123c0 | 1134 | BFD_ASSERT (dir[i] == '/' || dir[0] == '\0'); |
31f7ba04 | 1135 | |
2593f09a NC |
1136 | debugfile = malloc (strlen (debug_file_directory) + 1 |
1137 | + strlen (dir) | |
1138 | + strlen (".debug/") | |
f12123c0 | 1139 | + strlen (basename) |
2593f09a NC |
1140 | + 1); |
1141 | if (debugfile == NULL) | |
1142 | { | |
1143 | free (basename); | |
1144 | free (dir); | |
1145 | return NULL; | |
1146 | } | |
31f7ba04 NC |
1147 | |
1148 | /* First try in the same directory as the original file: */ | |
1149 | strcpy (debugfile, dir); | |
1150 | strcat (debugfile, basename); | |
1151 | ||
1152 | if (separate_debug_file_exists (debugfile, crc32)) | |
1153 | { | |
1154 | free (basename); | |
1155 | free (dir); | |
1156 | return debugfile; | |
1157 | } | |
1158 | ||
1159 | /* Then try in a subdirectory called .debug. */ | |
1160 | strcpy (debugfile, dir); | |
1161 | strcat (debugfile, ".debug/"); | |
1162 | strcat (debugfile, basename); | |
1163 | ||
1164 | if (separate_debug_file_exists (debugfile, crc32)) | |
1165 | { | |
1166 | free (basename); | |
1167 | free (dir); | |
1168 | return debugfile; | |
1169 | } | |
1170 | ||
1171 | /* Then try in the global debugfile directory. */ | |
1172 | strcpy (debugfile, debug_file_directory); | |
1173 | i = strlen (debug_file_directory) - 1; | |
1174 | if (i > 0 | |
1175 | && debug_file_directory[i] != '/' | |
1176 | && dir[0] != '/') | |
1177 | strcat (debugfile, "/"); | |
1178 | strcat (debugfile, dir); | |
1179 | strcat (debugfile, basename); | |
1180 | ||
1181 | if (separate_debug_file_exists (debugfile, crc32)) | |
1182 | { | |
1183 | free (basename); | |
1184 | free (dir); | |
1185 | return debugfile; | |
1186 | } | |
1187 | ||
1188 | free (debugfile); | |
1189 | free (basename); | |
1190 | free (dir); | |
1191 | return NULL; | |
1192 | } | |
1193 | ||
1194 | ||
1195 | /* | |
1196 | FUNCTION | |
1197 | bfd_follow_gnu_debuglink | |
1198 | ||
1199 | SYNOPSIS | |
c58b9523 | 1200 | char *bfd_follow_gnu_debuglink (bfd *abfd, const char *dir); |
31f7ba04 NC |
1201 | |
1202 | DESCRIPTION | |
1203 | ||
1204 | Takes a BFD and searches it for a .gnu_debuglink section. If this | |
28d39d1a NC |
1205 | section is found, it examines the section for the name and checksum |
1206 | of a '.debug' file containing auxiliary debugging information. It | |
1207 | then searches the filesystem for this .debug file in some standard | |
31f7ba04 | 1208 | locations, including the directory tree rooted at @var{dir}, and if |
28d39d1a NC |
1209 | found returns the full filename. |
1210 | ||
1211 | If @var{dir} is NULL, it will search a default path configured into | |
1212 | libbfd at build time. [XXX this feature is not currently | |
1213 | implemented]. | |
31f7ba04 NC |
1214 | |
1215 | RETURNS | |
1216 | <<NULL>> on any errors or failure to locate the .debug file, | |
1217 | otherwise a pointer to a heap-allocated string containing the | |
28d39d1a | 1218 | filename. The caller is responsible for freeing this string. |
31f7ba04 NC |
1219 | */ |
1220 | ||
1221 | char * | |
c58b9523 | 1222 | bfd_follow_gnu_debuglink (bfd *abfd, const char *dir) |
31f7ba04 | 1223 | { |
31f7ba04 NC |
1224 | return find_separate_debug_file (abfd, dir); |
1225 | } | |
2593f09a NC |
1226 | |
1227 | /* | |
1228 | FUNCTION | |
e7c81c25 | 1229 | bfd_create_gnu_debuglink_section |
2593f09a NC |
1230 | |
1231 | SYNOPSIS | |
198beae2 | 1232 | struct bfd_section *bfd_create_gnu_debuglink_section |
c58b9523 | 1233 | (bfd *abfd, const char *filename); |
2593f09a NC |
1234 | |
1235 | DESCRIPTION | |
1236 | ||
e7c81c25 NC |
1237 | Takes a @var{BFD} and adds a .gnu_debuglink section to it. The section is sized |
1238 | to be big enough to contain a link to the specified @var{filename}. | |
1239 | ||
1240 | RETURNS | |
1241 | A pointer to the new section is returned if all is ok. Otherwise <<NULL>> is | |
f12123c0 | 1242 | returned and bfd_error is set. |
e7c81c25 NC |
1243 | */ |
1244 | ||
1245 | asection * | |
c58b9523 | 1246 | bfd_create_gnu_debuglink_section (bfd *abfd, const char *filename) |
e7c81c25 | 1247 | { |
c58b9523 AM |
1248 | asection *sect; |
1249 | bfd_size_type debuglink_size; | |
e7c81c25 NC |
1250 | |
1251 | if (abfd == NULL || filename == NULL) | |
1252 | { | |
1253 | bfd_set_error (bfd_error_invalid_operation); | |
1254 | return NULL; | |
1255 | } | |
1256 | ||
1257 | /* Strip off any path components in filename. */ | |
1258 | filename = lbasename (filename); | |
f12123c0 | 1259 | |
e7c81c25 NC |
1260 | sect = bfd_get_section_by_name (abfd, GNU_DEBUGLINK); |
1261 | if (sect) | |
1262 | { | |
1263 | /* Section already exists. */ | |
1264 | bfd_set_error (bfd_error_invalid_operation); | |
1265 | return NULL; | |
1266 | } | |
1267 | ||
1268 | sect = bfd_make_section (abfd, GNU_DEBUGLINK); | |
1269 | if (sect == NULL) | |
1270 | return NULL; | |
1271 | ||
1272 | if (! bfd_set_section_flags (abfd, sect, | |
1273 | SEC_HAS_CONTENTS | SEC_READONLY | SEC_DEBUGGING)) | |
1274 | /* XXX Should we delete the section from the bfd ? */ | |
1275 | return NULL; | |
1276 | ||
f12123c0 | 1277 | |
e7c81c25 NC |
1278 | debuglink_size = strlen (filename) + 1; |
1279 | debuglink_size += 3; | |
1280 | debuglink_size &= ~3; | |
1281 | debuglink_size += 4; | |
1282 | ||
1283 | if (! bfd_set_section_size (abfd, sect, debuglink_size)) | |
1284 | /* XXX Should we delete the section from the bfd ? */ | |
1285 | return NULL; | |
f12123c0 | 1286 | |
e7c81c25 NC |
1287 | return sect; |
1288 | } | |
1289 | ||
1290 | ||
1291 | /* | |
1292 | FUNCTION | |
1293 | bfd_fill_in_gnu_debuglink_section | |
1294 | ||
1295 | SYNOPSIS | |
c58b9523 | 1296 | bfd_boolean bfd_fill_in_gnu_debuglink_section |
198beae2 | 1297 | (bfd *abfd, struct bfd_section *sect, const char *filename); |
e7c81c25 NC |
1298 | |
1299 | DESCRIPTION | |
1300 | ||
1301 | Takes a @var{BFD} and containing a .gnu_debuglink section @var{SECT} | |
1302 | and fills in the contents of the section to contain a link to the | |
1303 | specified @var{filename}. The filename should be relative to the | |
1304 | current directory. | |
2593f09a NC |
1305 | |
1306 | RETURNS | |
1307 | <<TRUE>> is returned if all is ok. Otherwise <<FALSE>> is returned | |
f12123c0 | 1308 | and bfd_error is set. |
2593f09a NC |
1309 | */ |
1310 | ||
1311 | bfd_boolean | |
c58b9523 | 1312 | bfd_fill_in_gnu_debuglink_section (bfd *abfd, |
198beae2 | 1313 | struct bfd_section *sect, |
c58b9523 | 1314 | const char *filename) |
2593f09a | 1315 | { |
2593f09a NC |
1316 | bfd_size_type debuglink_size; |
1317 | unsigned long crc32; | |
1318 | char * contents; | |
1319 | bfd_size_type crc_offset; | |
1320 | FILE * handle; | |
f075ee0c | 1321 | static unsigned char buffer[8 * 1024]; |
2593f09a NC |
1322 | size_t count; |
1323 | ||
e7c81c25 | 1324 | if (abfd == NULL || sect == NULL || filename == NULL) |
2593f09a NC |
1325 | { |
1326 | bfd_set_error (bfd_error_invalid_operation); | |
1327 | return FALSE; | |
1328 | } | |
1329 | ||
1330 | /* Make sure that we can read the file. | |
1331 | XXX - Should we attempt to locate the debug info file using the same | |
1332 | algorithm as gdb ? At the moment, since we are creating the | |
1333 | .gnu_debuglink section, we insist upon the user providing us with a | |
1334 | correct-for-section-creation-time path, but this need not conform to | |
1335 | the gdb location algorithm. */ | |
1336 | handle = fopen (filename, FOPEN_RB); | |
1337 | if (handle == NULL) | |
1338 | { | |
1339 | bfd_set_error (bfd_error_system_call); | |
1340 | return FALSE; | |
1341 | } | |
1342 | ||
1343 | crc32 = 0; | |
1344 | while ((count = fread (buffer, 1, sizeof buffer, handle)) > 0) | |
1345 | crc32 = bfd_calc_gnu_debuglink_crc32 (crc32, buffer, count); | |
1346 | fclose (handle); | |
1347 | ||
1348 | /* Strip off any path components in filename, | |
1349 | now that we no longer need them. */ | |
1350 | filename = lbasename (filename); | |
f12123c0 | 1351 | |
2593f09a NC |
1352 | debuglink_size = strlen (filename) + 1; |
1353 | debuglink_size += 3; | |
1354 | debuglink_size &= ~3; | |
1355 | debuglink_size += 4; | |
1356 | ||
2593f09a NC |
1357 | contents = malloc (debuglink_size); |
1358 | if (contents == NULL) | |
1359 | { | |
1360 | /* XXX Should we delete the section from the bfd ? */ | |
1361 | bfd_set_error (bfd_error_no_memory); | |
1362 | return FALSE; | |
1363 | } | |
1364 | ||
1365 | strcpy (contents, filename); | |
1366 | crc_offset = debuglink_size - 4; | |
1367 | ||
c58b9523 | 1368 | bfd_put_32 (abfd, crc32, contents + crc_offset); |
2593f09a | 1369 | |
c58b9523 | 1370 | if (! bfd_set_section_contents (abfd, sect, contents, 0, debuglink_size)) |
2593f09a NC |
1371 | { |
1372 | /* XXX Should we delete the section from the bfd ? */ | |
1373 | free (contents); | |
1374 | return FALSE; | |
1375 | } | |
1376 | ||
1377 | return TRUE; | |
1378 | } |